openadk/target/arm/bcm28xx/patches/3.18.12/0000-raspberry-pi.patch

diff -Nur linux-3.18.10/arch/arm/boot/dts/ads7846-overlay.dts linux-rpi/arch/arm/boot/dts/ads7846-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/ads7846-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/ads7846-overlay.dts	2015-03-26 11:46:41.692226515 +0100
@@ -0,0 +1,83 @@
+/*
+ * Generic Device Tree overlay for the ADS7846 touch controller
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			ads7846_pins: ads7846_pins {
+				brcm,pins = <255>; /* illegal default value */
+				brcm,function = <0>; /* in */
+				brcm,pull = <0>; /* none */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			ads7846: ads7846@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&ads7846_pins>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <255 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 255 0>;
+
+				/* driver defaults */
+				ti,x-min = /bits/ 16 <0>;
+				ti,y-min = /bits/ 16 <0>;
+				ti,x-max = /bits/ 16 <0x0FFF>;
+				ti,y-max = /bits/ 16 <0x0FFF>;
+				ti,pressure-min = /bits/ 16 <0>;
+				ti,pressure-max = /bits/ 16 <0xFFFF>;
+				ti,x-plate-ohms = /bits/ 16 <400>;
+			};
+		};
+	};
+	__overrides__ {
+		cs =     <&ads7846>,"reg:0";
+		speed =  <&ads7846>,"spi-max-frequency:0";
+		penirq = <&ads7846_pins>,"brcm,pins:0", /* REQUIRED */
+			 <&ads7846>,"interrupts:0",
+			 <&ads7846>,"pendown-gpio:4";
+		penirq_pull = <&ads7846_pins>,"brcm,pull:0";
+		swapxy = <&ads7846>,"ti,swap-xy?";
+		xmin =   <&ads7846>,"ti,x-min;0";
+		ymin =   <&ads7846>,"ti,y-min;0";
+		xmax =   <&ads7846>,"ti,x-max;0";
+		ymax =   <&ads7846>,"ti,y-max;0";
+		pmin =   <&ads7846>,"ti,pressure-min;0";
+		pmax =   <&ads7846>,"ti,pressure-max;0";
+		xohms =  <&ads7846>,"ti,x-plate-ohms;0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/bcm2708.dtsi linux-rpi/arch/arm/boot/dts/bcm2708.dtsi
--- linux-3.18.10/arch/arm/boot/dts/bcm2708.dtsi	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/bcm2708.dtsi	2015-03-26 11:46:41.696226518 +0100
@@ -0,0 +1,109 @@
+/include/ "skeleton.dtsi"
+
+/ {
+	compatible = "brcm,bcm2708";
+	model = "BCM2708";
+
+	interrupt-parent = <&intc>;
+
+	chosen {
+		/* No padding required - the boot loader can do that. */
+		bootargs = "";
+	};
+
+	soc: soc {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x7e000000 0x20000000 0x01000000>;
+
+		intc: interrupt-controller {
+			compatible = "brcm,bcm2708-armctrl-ic";
+			reg = <0x7e00b200 0x200>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		gpio: gpio {
+			compatible = "brcm,bcm2835-gpio";
+			reg = <0x7e200000 0xb4>;
+			interrupts = <2 17>, <2 18>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		i2s: i2s@7e203000 {
+			compatible = "brcm,bcm2708-i2s";
+			reg = <0x7e203000 0x20>,
+			      <0x7e101098 0x02>;
+
+			//dmas = <&dma 2>,
+			//       <&dma 3>;
+			dma-names = "tx", "rx";
+			status = "disabled";
+		};
+
+		spi0: spi@7e204000 {
+			compatible = "brcm,bcm2708-spi";
+			reg = <0x7e204000 0x1000>;
+			interrupts = <2 22>;
+			clocks = <&clk_spi>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c0: i2c@7e205000 {
+			compatible = "brcm,bcm2708-i2c";
+			reg = <0x7e205000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clk_i2c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@7e804000 {
+			compatible = "brcm,bcm2708-i2c";
+			reg = <0x7e804000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clk_i2c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		leds: leds {
+			compatible = "gpio-leds";
+		};
+
+		arm-pmu {
+			compatible = "arm,arm1176-pmu";
+		};
+	};
+
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk_i2c: i2c {
+			compatible = "fixed-clock";
+			reg = <1>;
+			#clock-cells = <0>;
+			clock-frequency = <250000000>;
+		};
+
+		clk_spi: clock@2 {
+			compatible = "fixed-clock";
+			reg = <2>;
+			#clock-cells = <0>;
+			clock-output-names = "spi";
+			clock-frequency = <250000000>;
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/bcm2708-rpi-b.dts linux-rpi/arch/arm/boot/dts/bcm2708-rpi-b.dts
--- linux-3.18.10/arch/arm/boot/dts/bcm2708-rpi-b.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/bcm2708-rpi-b.dts	2015-03-26 11:46:41.696226518 +0100
@@ -0,0 +1,107 @@
+/dts-v1/;
+
+/include/ "bcm2708.dtsi"
+
+/ {
+	compatible = "brcm,bcm2708";
+	model = "Raspberry Pi Model B";
+
+	aliases {
+		soc = &soc;
+		spi0 = &spi0;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2s  = &i2s;
+		gpio = &gpio;
+		intc = &intc;
+		leds = &leds;
+		sound = &sound;
+	};
+
+	sound: sound {
+	};
+};
+
+&gpio {
+	spi0_pins: spi0_pins {
+		brcm,pins = <7 8 9 10 11>;
+		brcm,function = <4>; /* alt0 */
+	};
+
+	i2c0_pins: i2c0 {
+		brcm,pins = <0 1>;
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+
+	i2s_pins: i2s {
+		brcm,pins = <28 29 30 31>;
+		brcm,function = <4>; /* alt0 */
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+	act_led: act {
+		label = "led0";
+		linux,default-trigger = "mmc0";
+		gpios = <&gpio 16 1>;
+	};
+};
+
+/ {
+	__overrides__ {
+		i2s = <&i2s>,"status";
+		spi = <&spi0>,"status";
+		i2c0 = <&i2c0>,"status";
+		i2c1 = <&i2c1>,"status";
+		i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+		i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+
+		act_led_gpio = <&act_led>,"gpios:4";
+		act_led_activelow = <&act_led>,"gpios:8";
+		act_led_trigger = <&act_led>,"linux,default-trigger";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts linux-rpi/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
--- linux-3.18.10/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts	2015-03-26 11:46:41.696226518 +0100
@@ -0,0 +1,117 @@
+/dts-v1/;
+
+/include/ "bcm2708.dtsi"
+
+/ {
+	compatible = "brcm,bcm2708";
+	model = "Raspberry Pi Model B+";
+
+	aliases {
+		soc = &soc;
+		spi0 = &spi0;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2s  = &i2s;
+		gpio = &gpio;
+		intc = &intc;
+		leds = &leds;
+		sound = &sound;
+	};
+
+	sound: sound {
+	};
+};
+
+&gpio {
+	spi0_pins: spi0_pins {
+		brcm,pins = <7 8 9 10 11>;
+		brcm,function = <4>; /* alt0 */
+	};
+
+	i2c0_pins: i2c0 {
+		brcm,pins = <0 1>;
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+
+	i2s_pins: i2s {
+		brcm,pins = <18 19 20 21>;
+		brcm,function = <4>; /* alt0 */
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+	act_led: act {
+		label = "led0";
+		linux,default-trigger = "mmc0";
+		gpios = <&gpio 47 0>;
+	};
+
+	pwr_led: pwr {
+		label = "led1";
+		linux,default-trigger = "input";
+		gpios = <&gpio 35 0>;
+	};
+};
+
+/ {
+	__overrides__ {
+		i2s = <&i2s>,"status";
+		spi = <&spi0>,"status";
+		i2c0 = <&i2c0>,"status";
+		i2c1 = <&i2c1>,"status";
+		i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+		i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+
+		act_led_gpio = <&act_led>,"gpios:4";
+		act_led_activelow = <&act_led>,"gpios:8";
+		act_led_trigger = <&act_led>,"linux,default-trigger";
+
+		pwr_led_gpio = <&pwr_led>,"gpios:4";
+		pwr_led_activelow = <&pwr_led>,"gpios:8";
+		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/bcm2709.dtsi linux-rpi/arch/arm/boot/dts/bcm2709.dtsi
--- linux-3.18.10/arch/arm/boot/dts/bcm2709.dtsi	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/bcm2709.dtsi	2015-03-26 11:46:41.696226518 +0100
@@ -0,0 +1,160 @@
+/include/ "skeleton.dtsi"
+
+/ {
+	compatible = "brcm,bcm2709";
+	model = "BCM2709";
+
+	interrupt-parent = <&intc>;
+
+	chosen {
+		/* No padding required - the boot loader can do that. */
+		bootargs = "";
+	};
+
+	soc: soc {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x7e000000 0x3f000000 0x01000000>;
+
+		intc: interrupt-controller {
+			compatible = "brcm,bcm2708-armctrl-ic";
+			reg = <0x7e00b200 0x200>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		gpio: gpio {
+			compatible = "brcm,bcm2835-gpio";
+			reg = <0x7e200000 0xb4>;
+			interrupts = <2 17>, <2 18>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		i2s: i2s@7e203000 {
+			compatible = "brcm,bcm2708-i2s";
+			reg = <0x7e203000 0x20>,
+			      <0x7e101098 0x02>;
+
+			//dmas = <&dma 2>,
+			//       <&dma 3>;
+			dma-names = "tx", "rx";
+			status = "disabled";
+		};
+
+		spi0: spi@7e204000 {
+			compatible = "brcm,bcm2708-spi";
+			reg = <0x7e204000 0x1000>;
+			interrupts = <2 22>;
+			clocks = <&clk_spi>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c0: i2c@7e205000 {
+			compatible = "brcm,bcm2708-i2c";
+			reg = <0x7e205000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clk_i2c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@7e804000 {
+			compatible = "brcm,bcm2708-i2c";
+			reg = <0x7e804000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clk_i2c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		leds: leds {
+			compatible = "gpio-leds";
+		};
+
+		arm-pmu {
+			compatible = "arm,cortex-a7-pmu";
+			interrupts = <3 9>;
+		};
+	};
+
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk_i2c: i2c {
+			compatible = "fixed-clock";
+			reg = <1>;
+			#clock-cells = <0>;
+			clock-frequency = <250000000>;
+		};
+
+		clk_spi: clock@2 {
+			compatible = "fixed-clock";
+			reg = <2>;
+			#clock-cells = <0>;
+			clock-output-names = "spi";
+			clock-frequency = <250000000>;
+		};
+	};
+
+	timer {
+		compatible = "arm,armv7-timer";
+		clock-frequency = <19200000>;
+		interrupts = <3 0>, // PHYS_SECURE_PPI
+			     <3 1>, // PHYS_NONSECURE_PPI
+			     <3 3>, // VIRT_PPI
+			     <3 2>; // HYP_PPI
+		always-on;
+	};
+
+	cpus: cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		v7_cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf00>;
+			clock-frequency = <800000000>;
+		};
+
+		v7_cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf01>;
+			clock-frequency = <800000000>;
+		};
+
+		v7_cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf02>;
+			clock-frequency = <800000000>;
+		};
+
+		v7_cpu3: cpu@3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf03>;
+			clock-frequency = <800000000>;
+		};
+	};
+
+	__overrides__ {
+		arm_freq = <&v7_cpu0>, "clock-frequency:0",
+		       <&v7_cpu1>, "clock-frequency:0",
+		       <&v7_cpu2>, "clock-frequency:0",
+		       <&v7_cpu3>, "clock-frequency:0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/bcm2709-rpi-2-b.dts linux-rpi/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
--- linux-3.18.10/arch/arm/boot/dts/bcm2709-rpi-2-b.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/bcm2709-rpi-2-b.dts	2015-03-26 11:46:41.696226518 +0100
@@ -0,0 +1,117 @@
+/dts-v1/;
+
+/include/ "bcm2709.dtsi"
+
+/ {
+	compatible = "brcm,bcm2709";
+	model = "Raspberry Pi 2 Model B";
+
+	aliases {
+		soc = &soc;
+		spi0 = &spi0;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2s  = &i2s;
+		gpio = &gpio;
+		intc = &intc;
+		leds = &leds;
+		sound = &sound;
+	};
+
+	sound: sound {
+	};
+};
+
+&gpio {
+	spi0_pins: spi0_pins {
+		brcm,pins = <7 8 9 10 11>;
+		brcm,function = <4>; /* alt0 */
+	};
+
+	i2c0_pins: i2c0 {
+		brcm,pins = <0 1>;
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+
+	i2s_pins: i2s {
+		brcm,pins = <18 19 20 21>;
+		brcm,function = <4>; /* alt0 */
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+	act_led: act {
+		label = "led0";
+		linux,default-trigger = "mmc0";
+		gpios = <&gpio 47 0>;
+	};
+
+	pwr_led: pwr {
+		label = "led1";
+		linux,default-trigger = "input";
+		gpios = <&gpio 35 0>;
+	};
+};
+
+/ {
+	__overrides__ {
+		i2s = <&i2s>,"status";
+		spi = <&spi0>,"status";
+		i2c0 = <&i2c0>,"status";
+		i2c1 = <&i2c1>,"status";
+		i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+		i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+
+		act_led_gpio = <&act_led>,"gpios:4";
+		act_led_activelow = <&act_led>,"gpios:8";
+		act_led_trigger = <&act_led>,"linux,default-trigger";
+
+		pwr_led_gpio = <&pwr_led>,"gpios:4";
+		pwr_led_activelow = <&pwr_led>,"gpios:8";
+		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/bmp085_i2c-sensor-overlay.dts linux-rpi/arch/arm/boot/dts/bmp085_i2c-sensor-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/bmp085_i2c-sensor-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/bmp085_i2c-sensor-overlay.dts	2015-03-26 11:46:41.696226518 +0100
@@ -0,0 +1,23 @@
+// Definitions for BMP085/BMP180 digital barometric pressure and temperature sensors from Bosch Sensortec
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2708";
+
+        fragment@0 {
+                target = <&i2c1>;
+                __overlay__ {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        status = "okay";
+
+                        bmp085@77 {
+                                compatible = "bosch,bmp085";
+                                reg = <0x77>;
+                                default-oversampling = <3>;
+                                status = "okay";
+                        };
+                };
+        };
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/ds1307-rtc-overlay.dts linux-rpi/arch/arm/boot/dts/ds1307-rtc-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/ds1307-rtc-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/ds1307-rtc-overlay.dts	2015-03-26 11:46:41.700226520 +0100
@@ -0,0 +1,22 @@
+// Definitions for DS1307 Real Time Clock
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			ds1307@68 {
+				compatible = "maxim,ds1307";
+				reg = <0x68>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/enc28j60-overlay.dts linux-rpi/arch/arm/boot/dts/enc28j60-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/enc28j60-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/enc28j60-overlay.dts	2015-03-26 11:46:41.700226520 +0100
@@ -0,0 +1,29 @@
+// Overlay for the Microchip ENC28J60 Ethernet Controller
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			enc28j60@0{
+				compatible = "microchip,enc28j60";
+				reg = <0>; /* CE0 */
+				spi-max-frequency = <12000000>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/hifiberry-amp-overlay.dts linux-rpi/arch/arm/boot/dts/hifiberry-amp-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/hifiberry-amp-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/hifiberry-amp-overlay.dts	2015-03-26 11:46:41.700226520 +0100
@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry Amp/Amp+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-amp";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			tas5713@1b {
+				#sound-dai-cells = <0>;
+				compatible = "ti,tas5713";
+				reg = <0x1b>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/hifiberry-dac-overlay.dts linux-rpi/arch/arm/boot/dts/hifiberry-dac-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/hifiberry-dac-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/hifiberry-dac-overlay.dts	2015-03-26 11:46:41.700226520 +0100
@@ -0,0 +1,34 @@
+// Definitions for HiFiBerry DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target-path = "/";
+		__overlay__ {
+			pcm5102a-codec {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5102a";
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/hifiberry-dacplus-overlay.dts linux-rpi/arch/arm/boot/dts/hifiberry-dacplus-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/hifiberry-dacplus-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/hifiberry-dacplus-overlay.dts	2015-03-26 11:46:41.700226520 +0100
@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-dacplus";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4d {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4d>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/hifiberry-digi-overlay.dts linux-rpi/arch/arm/boot/dts/hifiberry-digi-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/hifiberry-digi-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/hifiberry-digi-overlay.dts	2015-03-26 11:46:41.700226520 +0100
@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry Digi
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-digi";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			wm8804@3b {
+				#sound-dai-cells = <0>;
+				compatible = "wlf,wm8804";
+				reg = <0x3b>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/hy28a-overlay.dts linux-rpi/arch/arm/boot/dts/hy28a-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/hy28a-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/hy28a-overlay.dts	2015-03-26 11:46:41.700226520 +0100
@@ -0,0 +1,87 @@
+/*
+ * Device Tree overlay for HY28A display
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			hy28a_pins: hy28a_pins {
+				brcm,pins = <17 25 18>;
+				brcm,function = <0 1 1>; /* in out out */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hy28a: hy28a@0{
+				compatible = "ilitek,ili9320";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&hy28a_pins>;
+
+				spi-max-frequency = <32000000>;
+				spi-cpol;
+				spi-cpha;
+				rotate = <270>;
+				bgr;
+				fps = <50>;
+				buswidth = <8>;
+				startbyte = <0x70>;
+				reset-gpios = <&gpio 25 0>;
+				led-gpios = <&gpio 18 1>;
+				debug = <0>;
+			};
+
+			hy28a_ts: hy28a-ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <17 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 17 0>;
+				ti,x-plate-ohms = /bits/ 16 <100>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed =		<&hy28a>,"spi-max-frequency:0";
+		rotate =	<&hy28a>,"rotate:0";
+		fps =		<&hy28a>,"fps:0";
+		debug =		<&hy28a>,"debug:0";
+		xohms =		<&hy28a_ts>,"ti,x-plate-ohms;0";
+		resetgpio =	<&hy28a>,"reset-gpios:4",
+				<&hy28a_pins>, "brcm,pins:1";
+		ledgpio =	<&hy28a>,"led-gpios:4",
+				<&hy28a_pins>, "brcm,pins:2";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/hy28b-overlay.dts linux-rpi/arch/arm/boot/dts/hy28b-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/hy28b-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/hy28b-overlay.dts	2015-03-26 11:46:41.700226520 +0100
@@ -0,0 +1,142 @@
+/*
+ * Device Tree overlay for HY28b display shield by Texy
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			hy28b_pins: hy28b_pins {
+				brcm,pins = <17 25 18>;
+				brcm,function = <0 1 1>; /* in out out */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hy28b: hy28b@0{
+				compatible = "ilitek,ili9325";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&hy28b_pins>;
+
+				spi-max-frequency = <48000000>;
+				spi-cpol;
+				spi-cpha;
+				rotate = <270>;
+				bgr;
+				fps = <50>;
+				buswidth = <8>;
+				startbyte = <0x70>;
+				reset-gpios = <&gpio 25 0>;
+				led-gpios = <&gpio 18 1>;
+
+				gamma = "04 1F 4 7 7 0 7 7 6 0\n0F 00 1 7 4 0 0 0 6 7";
+
+				init = <0x10000e7 0x0010
+					0x1000000 0x0001
+					0x1000001 0x0100
+					0x1000002 0x0700
+				        0x1000003 0x1030
+					0x1000004 0x0000
+					0x1000008 0x0207
+					0x1000009 0x0000
+				        0x100000a 0x0000
+					0x100000c 0x0001
+					0x100000d 0x0000
+					0x100000f 0x0000
+				        0x1000010 0x0000
+					0x1000011 0x0007
+					0x1000012 0x0000
+					0x1000013 0x0000
+				        0x2000032
+					0x1000010 0x1590
+					0x1000011 0x0227
+				        0x2000032
+					0x1000012 0x009c
+				        0x2000032
+				        0x1000013 0x1900
+					0x1000029 0x0023
+					0x100002b 0x000e
+				        0x2000032
+				        0x1000020 0x0000
+					0x1000021 0x0000
+				        0x2000032
+					0x1000050 0x0000
+				        0x1000051 0x00ef
+					0x1000052 0x0000
+					0x1000053 0x013f
+					0x1000060 0xa700
+				        0x1000061 0x0001
+					0x100006a 0x0000
+					0x1000080 0x0000
+					0x1000081 0x0000
+				        0x1000082 0x0000
+					0x1000083 0x0000
+					0x1000084 0x0000
+					0x1000085 0x0000
+				        0x1000090 0x0010
+					0x1000092 0x0000
+					0x1000093 0x0003
+					0x1000095 0x0110
+				        0x1000097 0x0000
+					0x1000098 0x0000
+					0x1000007 0x0133
+					0x1000020 0x0000
+				        0x1000021 0x0000
+				        0x2000064>;
+				debug = <0>;
+			};
+
+			hy28b_ts: hy28b-ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <17 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 17 0>;
+				ti,x-plate-ohms = /bits/ 16 <100>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed = 	<&hy28b>,"spi-max-frequency:0";
+		rotate = 	<&hy28b>,"rotate:0";
+		fps = 		<&hy28b>,"fps:0";
+		debug = 	<&hy28b>,"debug:0";
+		xohms =		<&hy28b_ts>,"ti,x-plate-ohms;0";
+		resetgpio =	<&hy28b>,"reset-gpios:4",
+				<&hy28b_pins>, "brcm,pins:1";
+		ledgpio =	<&hy28b>,"led-gpios:4",
+				<&hy28b_pins>, "brcm,pins:2";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/i2c-rtc-overlay.dts linux-rpi/arch/arm/boot/dts/i2c-rtc-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/i2c-rtc-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/i2c-rtc-overlay.dts	2015-03-26 11:46:41.700226520 +0100
@@ -0,0 +1,49 @@
+// Definitions for several I2C based Real Time Clocks
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			ds1307: ds1307@68 {
+				compatible = "maxim,ds1307";
+				reg = <0x68>;
+				status = "disable";
+			};
+			ds3231: ds3231@68 {
+				compatible = "maxim,ds3231";
+				reg = <0x68>;
+				status = "disable";
+			};
+			pcf2127: pcf2127@51 {
+				compatible = "nxp,pcf2127";
+				reg = <0x51>;
+				status = "disable";
+			};
+			pcf8523: pcf8523@68 {
+				compatible = "nxp,pcf8523";
+				reg = <0x68>;
+				status = "disable";
+			};
+			pcf8563: pcf8563@51 {
+				compatible = "nxp,pcf8563";
+				reg = <0x51>;
+				status = "disable";
+			};
+		};
+	};
+	__overrides__ {
+		ds1307 = <&ds1307>,"status";
+		ds3231 = <&ds3231>,"status";
+		pcf2127 = <&pcf2127>,"status";
+		pcf8523 = <&pcf8523>,"status";
+		pcf8563 = <&pcf8563>,"status";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/iqaudio-dac-overlay.dts linux-rpi/arch/arm/boot/dts/iqaudio-dac-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/iqaudio-dac-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/iqaudio-dac-overlay.dts	2015-03-26 11:46:41.712226533 +0100
@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "iqaudio,iqaudio-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4c {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4c>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/iqaudio-dacplus-overlay.dts linux-rpi/arch/arm/boot/dts/iqaudio-dacplus-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/iqaudio-dacplus-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/iqaudio-dacplus-overlay.dts	2015-03-26 11:46:41.712226533 +0100
@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "iqaudio,iqaudio-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4c {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4c>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/lirc-rpi-overlay.dts linux-rpi/arch/arm/boot/dts/lirc-rpi-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/lirc-rpi-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/lirc-rpi-overlay.dts	2015-03-26 11:46:41.712226533 +0100
@@ -0,0 +1,57 @@
+// Definitions for lirc-rpi module
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			lirc_rpi: lirc_rpi {
+				compatible = "rpi,lirc-rpi";
+				pinctrl-names = "default";
+				pinctrl-0 = <&lirc_pins>;
+				status = "okay";
+
+				// Override autodetection of IR receiver circuit
+				// (0 = active high, 1 = active low, -1 = no override )
+				rpi,sense = <0xffffffff>;
+
+				// Software carrier
+				// (0 = off, 1 = on)
+				rpi,softcarrier = <1>;
+
+				// Invert output
+				// (0 = off, 1 = on)
+				rpi,invert = <0>;
+
+				// Enable debugging messages
+				// (0 = off, 1 = on)
+				rpi,debug = <0>;
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			lirc_pins: lirc_pins {
+				brcm,pins = <17 18>;
+				brcm,function = <1 0>; // out in
+				brcm,pull = <0 1>; // off down
+			};
+		};
+	};
+
+	__overrides__ {
+		gpio_out_pin =  <&lirc_pins>,"brcm,pins:0";
+		gpio_in_pin =   <&lirc_pins>,"brcm,pins:4";
+		gpio_in_pull =  <&lirc_pins>,"brcm,pull:4";
+
+		sense =         <&lirc_rpi>,"rpi,sense:0";
+		softcarrier =   <&lirc_rpi>,"rpi,softcarrier:0";
+		invert =        <&lirc_rpi>,"rpi,invert:0";
+		debug =         <&lirc_rpi>,"rpi,debug:0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/Makefile linux-rpi/arch/arm/boot/dts/Makefile
--- linux-3.18.10/arch/arm/boot/dts/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/Makefile	2015-03-26 11:46:41.692226515 +0100
@@ -53,7 +53,46 @@
 
 dtb-$(CONFIG_ARCH_ATLAS6) += atlas6-evb.dtb
 dtb-$(CONFIG_ARCH_AXXIA) += axm5516-amarillo.dtb
+
+# Raspberry Pi
+ifeq ($(CONFIG_BCM2708_DT),y)
+   RPI_DT_OVERLAYS=y
+endif
+ifeq ($(CONFIG_BCM2709_DT),y)
+   RPI_DT_OVERLAYS=y
+endif
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b.dtb
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b-plus.dtb
+dtb-$(CONFIG_BCM2709_DT) += bcm2709-rpi-2-b.dtb
+dtb-$(RPI_DT_OVERLAYS) += ads7846-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += ds1307-rtc-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += i2c-rtc-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-dacplus-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-digi-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hy28a-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hy28b-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += iqaudio-dac-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += iqaudio-dacplus-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-proto-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += lirc-rpi-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += mz61581-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += pcf2127-rtc-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += pcf8523-rtc-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += piscreen-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += pitft28-resistive-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += pps-gpio-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-display-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += tinylcd35-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += w1-gpio-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += w1-gpio-pullup-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += spi-bcm2835-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += mcp2515-can0-overlay.dtb
 dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb
+
 dtb-$(CONFIG_ARCH_BCM_5301X) += bcm4708-netgear-r6250.dtb
 dtb-$(CONFIG_ARCH_BCM_63XX) += bcm963138dvt.dtb
 dtb-$(CONFIG_ARCH_BCM_MOBILE) += bcm28155-ap.dtb \
@@ -519,6 +558,12 @@
 
 targets += dtbs dtbs_install
 targets += $(dtb-y)
+
+endif
+
+# Enable fixups to support overlays on BCM2708 platforms
+ifeq ($(RPI_DT_OVERLAYS),y)
+	DTC_FLAGS ?= -@
 endif
 
 # *.dtb used to be generated in the directory above. Clean out the
diff -Nur linux-3.18.10/arch/arm/boot/dts/mcp2515-can0-overlay.dts linux-rpi/arch/arm/boot/dts/mcp2515-can0-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/mcp2515-can0-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/mcp2515-can0-overlay.dts	2015-03-26 11:46:41.716226537 +0100
@@ -0,0 +1,69 @@
+/*
+ * Device tree overlay for mcp251x/can0 on spi0.0
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+    /* disable spi-dev for spi0.0 */
+    fragment@0 {
+        target = <&spi0>;
+        __overlay__ {
+            status = "okay";
+            spidev@0{
+                status = "disabled";
+            };
+        };
+    };
+
+    /* the interrupt pin of the can-controller */
+    fragment@1 {
+        target = <&gpio>;
+        __overlay__ {
+            can0_pins: can0_pins {
+                brcm,pins = <25>;
+                brcm,function = <0>; /* input */
+            };
+        };
+    };
+
+    /* the clock/oscillator of the can-controller */
+    fragment@2 {
+        target-path = "/clocks";
+        __overlay__ {
+            /* external oscillator of mcp2515 on SPI0.0 */
+            can0_osc: can0_osc {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency  = <16000000>;
+            };
+        };
+    };
+
+    /* the spi config of the can-controller itself binding everything together */
+    fragment@3 {
+        target = <&spi0>;
+        __overlay__ {
+            /* needed to avoid dtc warning */
+            #address-cells = <1>;
+            #size-cells = <0>;
+            can0: mcp2515@0 {
+                reg = <0>;
+                compatible = "microchip,mcp2515";
+                pinctrl-names = "default";
+                pinctrl-0 = <&can0_pins>;
+                spi-max-frequency = <10000000>;
+                interrupt-parent = <&gpio>;
+                interrupts = <25 0x2>;
+                clocks = <&can0_osc>;
+            };
+        };
+    };
+    __overrides__ {
+        oscillator = <&can0_osc>,"oscillator-frequency";
+        spimaxfrequency = <&can0>,"spi-max-frequency:0";
+        interrupt = <&can0_pins>,"brcm,pins:0",<&can0>,"interrupts:0";
+    };
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/mz61581-overlay.dts linux-rpi/arch/arm/boot/dts/mz61581-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/mz61581-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/mz61581-overlay.dts	2015-03-26 11:46:41.716226537 +0100
@@ -0,0 +1,109 @@
+/*
+ * Device Tree overlay for MZ61581-PI-EXT 2014.12.28 by Tontec
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			mz61581_pins: mz61581_pins {
+				brcm,pins = <4 15 18 25>;
+				brcm,function = <0 1 1 1>; /* in out out out */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			mz61581: mz61581@0{
+				compatible = "samsung,s6d02a1";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&mz61581_pins>;
+
+				spi-max-frequency = <128000000>;
+				spi-cpol;
+				spi-cpha;
+
+				width = <320>;
+				height = <480>;
+				rotate = <270>;
+				bgr;
+				fps = <30>;
+				buswidth = <8>;
+
+				reset-gpios = <&gpio 15 0>;
+				dc-gpios = <&gpio 25 0>;
+				led-gpios = <&gpio 18 0>;
+
+				init = <0x10000b0 00
+					0x1000011
+					0x20000ff
+					0x10000b3 0x02 0x00 0x00 0x00
+					0x10000c0 0x13 0x3b 0x00 0x02 0x00 0x01 0x00 0x43
+					0x10000c1 0x08 0x16 0x08 0x08
+					0x10000c4 0x11 0x07 0x03 0x03
+					0x10000c6 0x00
+					0x10000c8 0x03 0x03 0x13 0x5c 0x03 0x07 0x14 0x08 0x00 0x21 0x08 0x14 0x07 0x53 0x0c 0x13 0x03 0x03 0x21 0x00
+					0x1000035 0x00
+					0x1000036 0xa0
+					0x100003a 0x55
+					0x1000044 0x00 0x01
+					0x10000d0 0x07 0x07 0x1d 0x03
+					0x10000d1 0x03 0x30 0x10
+					0x10000d2 0x03 0x14 0x04
+					0x1000029
+					0x100002c>;
+
+				/* This is a workaround to make sure the init sequence slows down and doesn't fail */
+				debug = <3>;
+			};
+
+			mz61581_ts: mz61581_ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <4 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 4 0>;
+
+				ti,x-plate-ohms = /bits/ 16 <60>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed =   <&mz61581>, "spi-max-frequency:0";
+		rotate =  <&mz61581>, "rotate:0";
+		fps =     <&mz61581>, "fps:0";
+		debug =   <&mz61581>, "debug:0";
+		xohms =   <&mz61581_ts>,"ti,x-plate-ohms;0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/pcf2127-rtc-overlay.dts linux-rpi/arch/arm/boot/dts/pcf2127-rtc-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/pcf2127-rtc-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/pcf2127-rtc-overlay.dts	2015-03-26 11:46:41.720226540 +0100
@@ -0,0 +1,22 @@
+// Definitions for PCF2127 Real Time Clock
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcf2127@51 {
+				compatible = "nxp,pcf2127";
+				reg = <0x51>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/pcf8523-rtc-overlay.dts linux-rpi/arch/arm/boot/dts/pcf8523-rtc-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/pcf8523-rtc-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/pcf8523-rtc-overlay.dts	2015-03-26 11:46:41.720226540 +0100
@@ -0,0 +1,22 @@
+// Definitions for PCF8523 Real Time Clock
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcf8523@68 {
+				compatible = "nxp,pcf8523";
+				reg = <0x68>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/piscreen-overlay.dts linux-rpi/arch/arm/boot/dts/piscreen-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/piscreen-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/piscreen-overlay.dts	2015-03-26 11:46:41.720226540 +0100
@@ -0,0 +1,94 @@
+/*
+ * Device Tree overlay for PiScreen 3.5" display shield by Ozzmaker
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			piscreen_pins: piscreen_pins {
+				brcm,pins = <17 25 24 22>;
+				brcm,function = <0 1 1 1>; /* in out out out */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			piscreen: piscreen@0{
+				compatible = "ilitek,ili9486";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&piscreen_pins>;
+
+				spi-max-frequency = <24000000>;
+				rotate = <270>;
+				bgr;
+				fps = <30>;
+				buswidth = <8>;
+				regwidth = <16>;
+				reset-gpios = <&gpio 25 0>;
+				dc-gpios = <&gpio 24 0>;
+				led-gpios = <&gpio 22 1>;
+				debug = <0>;
+
+				init = <0x10000b0 0x00
+				        0x1000011
+					0x20000ff
+					0x100003a 0x55
+					0x1000036 0x28
+					0x10000c2 0x44
+					0x10000c5 0x00 0x00 0x00 0x00
+					0x10000e0 0x0f 0x1f 0x1c 0x0c 0x0f 0x08 0x48 0x98 0x37 0x0a 0x13 0x04 0x11 0x0d 0x00
+					0x10000e1 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
+					0x10000e2 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
+					0x1000011
+					0x1000029>;
+			};
+
+			piscreen-ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <17 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 17 0>;
+				ti,x-plate-ohms = /bits/ 16 <100>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed =		<&piscreen>,"spi-max-frequency:0";
+		rotate =	<&piscreen>,"rotate:0";
+		fps =		<&piscreen>,"fps:0";
+		debug =		<&piscreen>,"debug:0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/pitft28-resistive-overlay.dts linux-rpi/arch/arm/boot/dts/pitft28-resistive-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/pitft28-resistive-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/pitft28-resistive-overlay.dts	2015-03-26 11:46:41.720226540 +0100
@@ -0,0 +1,115 @@
+/*
+ * Device Tree overlay for Adafruit PiTFT 2.8" resistive touch screen
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			pitft_pins: pitft_pins {
+				brcm,pins = <24 25>;
+				brcm,function = <0 1>; /* in out */
+				brcm,pull = <2 0>; /* pullup none */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pitft: pitft@0{
+				compatible = "ilitek,ili9340";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&pitft_pins>;
+
+				spi-max-frequency = <32000000>;
+				rotate = <90>;
+				fps = <25>;
+				bgr;
+				buswidth = <8>;
+				dc-gpios = <&gpio 25 0>;
+				debug = <0>;
+			};
+
+			pitft_ts@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "st,stmpe610";
+				reg = <1>;
+
+				spi-max-frequency = <500000>;
+				irq-gpio = <&gpio 24 0x2>; /* IRQF_TRIGGER_FALLING */
+				interrupts = <24 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				interrupt-controller;
+
+				stmpe_touchscreen {
+					compatible = "st,stmpe-ts";
+					st,sample-time = <4>;
+					st,mod-12b = <1>;
+					st,ref-sel = <0>;
+					st,adc-freq = <2>;
+					st,ave-ctrl = <3>;
+					st,touch-det-delay = <4>;
+					st,settling = <2>;
+					st,fraction-z = <7>;
+					st,i-drive = <0>;
+				};
+
+				stmpe_gpio: stmpe_gpio {
+					#gpio-cells = <2>;
+					compatible = "st,stmpe-gpio";
+					/*
+					 * only GPIO2 is wired/available
+					 * and it is wired to the backlight
+					 */
+					st,norequest-mask = <0x7b>;
+				};
+			};
+		};
+	};
+
+	fragment@3 {
+		target-path = "/soc";
+		__overlay__ {
+			backlight {
+				compatible = "gpio-backlight";
+				gpios = <&stmpe_gpio 2 0>;
+				default-on;
+			};
+		};
+	};
+
+	__overrides__ {
+		speed =   <&pitft>,"spi-max-frequency:0";
+		rotate =  <&pitft>,"rotate:0";
+		fps =     <&pitft>,"fps:0";
+		debug =   <&pitft>,"debug:0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/pps-gpio-overlay.dts linux-rpi/arch/arm/boot/dts/pps-gpio-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/pps-gpio-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/pps-gpio-overlay.dts	2015-03-26 11:46:41.720226540 +0100
@@ -0,0 +1,34 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			pps: pps {
+				compatible = "pps-gpio";
+				pinctrl-names = "default";
+				pinctrl-0 = <&pps_pins>;
+				gpios = <&gpio 18 0>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			pps_pins: pps_pins {
+				brcm,pins =     <18>;
+				brcm,function = <0>;    // in
+				brcm,pull =     <0>;    // off
+			};
+		};
+	};
+
+	__overrides__ {
+		gpiopin = <&pps>,"gpios:4",
+			  <&pps_pins>,"brcm,pins:0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/rpi-display-overlay.dts linux-rpi/arch/arm/boot/dts/rpi-display-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/rpi-display-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/rpi-display-overlay.dts	2015-03-26 11:46:41.724226543 +0100
@@ -0,0 +1,82 @@
+/*
+ * Device Tree overlay for rpi-display by Watterott
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			rpi_display_pins: rpi_display_pins {
+				brcm,pins = <18 23 24 25>;
+				brcm,function = <1 1 1 0>; /* out out out in */
+				brcm,pull = <0 0 0 2>; /* - - - up */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			rpidisplay: rpi-display@0{
+				compatible = "ilitek,ili9341";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&rpi_display_pins>;
+
+				spi-max-frequency = <32000000>;
+				rotate = <270>;
+				bgr;
+				fps = <30>;
+				buswidth = <8>;
+				reset-gpios = <&gpio 23 0>;
+				dc-gpios = <&gpio 24 0>;
+				led-gpios = <&gpio 18 1>;
+				debug = <0>;
+			};
+
+			rpidisplay_ts: rpi-display-ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <25 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 25 0>;
+				ti,x-plate-ohms = /bits/ 16 <60>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed =   <&rpidisplay>,"spi-max-frequency:0";
+		rotate =  <&rpidisplay>,"rotate:0";
+		fps =     <&rpidisplay>,"fps:0";
+		debug =   <&rpidisplay>,"debug:0";
+		xohms =   <&rpidisplay_ts>,"ti,x-plate-ohms;0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/rpi-proto-overlay.dts linux-rpi/arch/arm/boot/dts/rpi-proto-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/rpi-proto-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/rpi-proto-overlay.dts	2015-03-26 11:46:41.724226543 +0100
@@ -0,0 +1,39 @@
+// Definitions for Rpi-Proto
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "rpi,rpi-proto";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			wm8731@1a {
+				#sound-dai-cells = <0>;
+				compatible = "wlf,wm8731";
+				reg = <0x1a>;
+				status = "okay";
+			};
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/spi-bcm2835-overlay.dts linux-rpi/arch/arm/boot/dts/spi-bcm2835-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/spi-bcm2835-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/spi-bcm2835-overlay.dts	2015-03-26 11:46:41.724226543 +0100
@@ -0,0 +1,18 @@
+/*
+ * Device tree overlay for spi-bcm2835
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+	/* setting up compatiblity to allow loading the spi-bcm2835 driver */
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+			compatible = "brcm,bcm2835-spi";
+		};
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/tinylcd35-overlay.dts linux-rpi/arch/arm/boot/dts/tinylcd35-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/tinylcd35-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/tinylcd35-overlay.dts	2015-03-26 11:46:41.732226551 +0100
@@ -0,0 +1,216 @@
+/*
+ * tinylcd35-overlay.dts
+ *
+ * -------------------------------------------------
+ * www.tinlylcd.com
+ * -------------------------------------------------
+ * Device---Driver-----BUS       GPIO's
+ * display  tinylcd35  spi0.0    25 24 18
+ * touch    ads7846    spi0.1    5
+ * rtc      ds1307     i2c1-0068
+ * rtc      pcf8563    i2c1-0051
+ * keypad   gpio-keys  --------- 17 22 27 23 28
+ *
+ *
+ * TinyLCD.com 3.5 inch TFT
+ *
+ *  Version 001
+ *  5/3/2015  -- Noralf Trønnes     Initial Device tree framework
+ *  10/3/2015 -- tinylcd@gmail.com  added ds1307 support.
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			tinylcd35_pins: tinylcd35_pins {
+				brcm,pins = <25 24 18>;
+				brcm,function = <1>; /* out */
+			};
+			tinylcd35_ts_pins: tinylcd35_ts_pins {
+				brcm,pins = <5>;
+				brcm,function = <0>; /* in */
+			};
+			keypad_pins: keypad_pins {
+				brcm,pins = <4 17 22 23 27>;
+				brcm,function = <0>; /* in */
+				brcm,pull = <1>; /* down */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			tinylcd35: tinylcd35@0{
+				compatible = "neosec,tinylcd";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&tinylcd35_pins>,
+					    <&tinylcd35_ts_pins>;
+
+				spi-max-frequency = <48000000>;
+				rotate = <270>;
+				fps = <20>;
+				bgr;
+				buswidth = <8>;
+				reset-gpios = <&gpio 25 0>;
+				dc-gpios = <&gpio 24 0>;
+				led-gpios = <&gpio 18 1>;
+				debug = <0>;
+
+				init = <0x10000B0 0x80
+					0x10000C0 0x0A 0x0A
+					0x10000C1 0x01 0x01
+					0x10000C2 0x33
+					0x10000C5 0x00 0x42 0x80
+					0x10000B1 0xD0 0x11
+					0x10000B4 0x02
+					0x10000B6 0x00 0x22 0x3B
+					0x10000B7 0x07
+					0x1000036 0x58
+					0x10000F0 0x36 0xA5 0xD3
+					0x10000E5 0x80
+					0x10000E5 0x01
+					0x10000B3 0x00
+					0x10000E5 0x00
+					0x10000F0 0x36 0xA5 0x53
+					0x10000E0 0x00 0x35 0x33 0x00 0x00 0x00 0x00 0x35 0x33 0x00 0x00 0x00
+					0x100003A 0x55
+					0x1000011
+					0x2000001
+					0x1000029>;
+			};
+
+			tinylcd35_ts: tinylcd35_ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+				status = "disabled";
+
+				spi-max-frequency = <2000000>;
+				interrupts = <5 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 5 0>;
+				ti,x-plate-ohms = /bits/ 16 <100>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+
+	/*  RTC    */
+
+	fragment@3 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pcf8563: pcf8563@51 {
+				compatible = "nxp,pcf8563";
+				reg = <0x51>;
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@4 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			ds1307: ds1307@68 {
+				compatible = "maxim,ds1307";
+				reg = <0x68>;
+				status = "disabled";
+			};
+		};
+	};
+
+	/*
+	 * Values for input event code is found under the
+	 * 'Keys and buttons' heading in include/uapi/linux/input.h
+	 */
+	fragment@5 {
+		target-path = "/soc";
+		__overlay__ {
+			keypad: keypad {
+				compatible = "gpio-keys";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&keypad_pins>;
+				status = "disabled";
+				autorepeat;
+
+				button@17 {
+					label = "GPIO KEY_UP";
+					linux,code = <103>;
+					gpios = <&gpio 17 0>;
+				};
+				button@22 {
+					label = "GPIO KEY_DOWN";
+					linux,code = <108>;
+					gpios = <&gpio 22 0>;
+				};
+				button@27 {
+					label = "GPIO KEY_LEFT";
+					linux,code = <105>;
+					gpios = <&gpio 27 0>;
+				};
+				button@23 {
+					label = "GPIO KEY_RIGHT";
+					linux,code = <106>;
+					gpios = <&gpio 23 0>;
+				};
+				button@4 {
+					label = "GPIO KEY_ENTER";
+					linux,code = <28>;
+					gpios = <&gpio 4 0>;
+				};
+			};
+		};
+	};
+
+	__overrides__ {
+		speed =      <&tinylcd35>,"spi-max-frequency:0";
+		rotate =     <&tinylcd35>,"rotate:0";
+		fps =        <&tinylcd35>,"fps:0";
+		debug =      <&tinylcd35>,"debug:0";
+		touch =      <&tinylcd35_ts>,"status";
+		touchgpio =  <&tinylcd35_ts_pins>,"brcm,pins:0",
+			     <&tinylcd35_ts>,"interrupts:0",
+			     <&tinylcd35_ts>,"pendown-gpio:4";
+		xohms =      <&tinylcd35_ts>,"ti,x-plate-ohms;0";
+		rtc-pcf =    <&i2c1>,"status",
+			     <&pcf8563>,"status";
+		rtc-ds =     <&i2c1>,"status",
+			     <&ds1307>,"status";
+		keypad =     <&keypad>,"status";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/w1-gpio-overlay.dts linux-rpi/arch/arm/boot/dts/w1-gpio-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/w1-gpio-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/w1-gpio-overlay.dts	2015-03-26 11:46:41.732226551 +0100
@@ -0,0 +1,39 @@
+// Definitions for w1-gpio module (without external pullup)
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+
+			w1: onewire@0 {
+				compatible = "w1-gpio";
+				pinctrl-names = "default";
+				pinctrl-0 = <&w1_pins>;
+				gpios = <&gpio 4 0>;
+				rpi,parasitic-power = <0>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			w1_pins: w1_pins {
+				brcm,pins = <4>;
+				brcm,function = <0>; // in (initially)
+				brcm,pull = <0>; // off
+			};
+		};
+	};
+
+	__overrides__ {
+		gpiopin =       <&w1>,"gpios:4",
+				<&w1_pins>,"brcm,pins:0";
+		pullup =        <&w1>,"rpi,parasitic-power:0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/boot/dts/w1-gpio-pullup-overlay.dts linux-rpi/arch/arm/boot/dts/w1-gpio-pullup-overlay.dts
--- linux-3.18.10/arch/arm/boot/dts/w1-gpio-pullup-overlay.dts	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/boot/dts/w1-gpio-pullup-overlay.dts	2015-03-26 11:46:41.732226551 +0100
@@ -0,0 +1,41 @@
+// Definitions for w1-gpio module (with external pullup)
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+
+			w1: onewire@0 {
+				compatible = "w1-gpio";
+				pinctrl-names = "default";
+				pinctrl-0 = <&w1_pins>;
+				gpios = <&gpio 4 0>, <&gpio 5 1>;
+				rpi,parasitic-power = <0>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			w1_pins: w1_pins {
+				brcm,pins = <4 5>;
+				brcm,function = <0 1>; // in out
+				brcm,pull = <0 0>; // off off
+			};
+		};
+	};
+
+	__overrides__ {
+		gpiopin =       <&w1>,"gpios:4",
+				<&w1_pins>,"brcm,pins:0";
+		extpullup =     <&w1>,"gpios:16",
+				<&w1_pins>,"brcm,pins:4";
+		pullup =        <&w1>,"rpi,parasitic-power:0";
+	};
+};
diff -Nur linux-3.18.10/arch/arm/configs/bcm2709_defconfig linux-rpi/arch/arm/configs/bcm2709_defconfig
--- linux-3.18.10/arch/arm/configs/bcm2709_defconfig	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/configs/bcm2709_defconfig	2015-03-26 11:46:41.736226555 +0100
@@ -0,0 +1,1204 @@
+# CONFIG_ARM_PATCH_PHYS_VIRT is not set
+CONFIG_PHYS_OFFSET=0
+CONFIG_LOCALVERSION="-v7"
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_FHANDLE=y
+CONFIG_AUDIT=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_XACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_RESOURCE_COUNTERS=y
+CONFIG_MEMCG=y
+CONFIG_BLK_CGROUP=y
+CONFIG_NAMESPACES=y
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_EMBEDDED=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_PROFILING=y
+CONFIG_OPROFILE=m
+CONFIG_KPROBES=y
+CONFIG_JUMP_LABEL=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODVERSIONS=y
+CONFIG_MODULE_SRCVERSION_ALL=y
+CONFIG_BLK_DEV_THROTTLING=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_MAC_PARTITION=y
+CONFIG_CFQ_GROUP_IOSCHED=y
+CONFIG_ARCH_BCM2709=y
+CONFIG_BCM2709_DT=y
+# CONFIG_CACHE_L2X0 is not set
+CONFIG_SMP=y
+CONFIG_HAVE_ARM_ARCH_TIMER=y
+CONFIG_VMSPLIT_2G=y
+CONFIG_PREEMPT=y
+CONFIG_AEABI=y
+CONFIG_CLEANCACHE=y
+CONFIG_FRONTSWAP=y
+CONFIG_CMA=y
+CONFIG_ZSMALLOC=m
+CONFIG_PGTABLE_MAPPING=y
+CONFIG_UACCESS_WITH_MEMCPY=y
+CONFIG_SECCOMP=y
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_CMDLINE="console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait"
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_STAT=m
+CONFIG_CPU_FREQ_STAT_DETAILS=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_VFP=y
+CONFIG_NEON=y
+CONFIG_KERNEL_MODE_NEON=y
+CONFIG_BINFMT_MISC=m
+# CONFIG_SUSPEND is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_XFRM_USER=y
+CONFIG_NET_KEY=m
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_VERBOSE=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_RARP=y
+CONFIG_NET_IPIP=m
+CONFIG_NET_IPGRE_DEMUX=m
+CONFIG_NET_IPGRE=m
+CONFIG_IP_MROUTE=y
+CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IP_PIMSM_V1=y
+CONFIG_IP_PIMSM_V2=y
+CONFIG_SYN_COOKIES=y
+CONFIG_INET_AH=m
+CONFIG_INET_ESP=m
+CONFIG_INET_IPCOMP=m
+CONFIG_INET_XFRM_MODE_TRANSPORT=m
+CONFIG_INET_XFRM_MODE_TUNNEL=m
+CONFIG_INET_XFRM_MODE_BEET=m
+CONFIG_INET_LRO=m
+CONFIG_INET_DIAG=m
+CONFIG_INET6_AH=m
+CONFIG_INET6_ESP=m
+CONFIG_INET6_IPCOMP=m
+CONFIG_IPV6_TUNNEL=m
+CONFIG_IPV6_MULTIPLE_TABLES=y
+CONFIG_IPV6_MROUTE=y
+CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IPV6_PIMSM_V2=y
+CONFIG_NETFILTER=y
+CONFIG_NF_CONNTRACK=m
+CONFIG_NF_CONNTRACK_ZONES=y
+CONFIG_NF_CONNTRACK_EVENTS=y
+CONFIG_NF_CONNTRACK_TIMESTAMP=y
+CONFIG_NF_CT_PROTO_DCCP=m
+CONFIG_NF_CT_PROTO_UDPLITE=m
+CONFIG_NF_CONNTRACK_AMANDA=m
+CONFIG_NF_CONNTRACK_FTP=m
+CONFIG_NF_CONNTRACK_H323=m
+CONFIG_NF_CONNTRACK_IRC=m
+CONFIG_NF_CONNTRACK_NETBIOS_NS=m
+CONFIG_NF_CONNTRACK_SNMP=m
+CONFIG_NF_CONNTRACK_PPTP=m
+CONFIG_NF_CONNTRACK_SANE=m
+CONFIG_NF_CONNTRACK_SIP=m
+CONFIG_NF_CONNTRACK_TFTP=m
+CONFIG_NF_CT_NETLINK=m
+CONFIG_NETFILTER_XT_SET=m
+CONFIG_NETFILTER_XT_TARGET_AUDIT=m
+CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
+CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
+CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
+CONFIG_NETFILTER_XT_TARGET_DSCP=m
+CONFIG_NETFILTER_XT_TARGET_HMARK=m
+CONFIG_NETFILTER_XT_TARGET_IDLETIMER=m
+CONFIG_NETFILTER_XT_TARGET_LED=m
+CONFIG_NETFILTER_XT_TARGET_LOG=m
+CONFIG_NETFILTER_XT_TARGET_MARK=m
+CONFIG_NETFILTER_XT_TARGET_NFLOG=m
+CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
+CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
+CONFIG_NETFILTER_XT_TARGET_TEE=m
+CONFIG_NETFILTER_XT_TARGET_TPROXY=m
+CONFIG_NETFILTER_XT_TARGET_TRACE=m
+CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
+CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m
+CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
+CONFIG_NETFILTER_XT_MATCH_BPF=m
+CONFIG_NETFILTER_XT_MATCH_CLUSTER=m
+CONFIG_NETFILTER_XT_MATCH_COMMENT=m
+CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
+CONFIG_NETFILTER_XT_MATCH_CONNLABEL=m
+CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
+CONFIG_NETFILTER_XT_MATCH_CPU=m
+CONFIG_NETFILTER_XT_MATCH_DCCP=m
+CONFIG_NETFILTER_XT_MATCH_DEVGROUP=m
+CONFIG_NETFILTER_XT_MATCH_DSCP=m
+CONFIG_NETFILTER_XT_MATCH_ESP=m
+CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_HELPER=m
+CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
+CONFIG_NETFILTER_XT_MATCH_IPVS=m
+CONFIG_NETFILTER_XT_MATCH_LENGTH=m
+CONFIG_NETFILTER_XT_MATCH_LIMIT=m
+CONFIG_NETFILTER_XT_MATCH_MAC=m
+CONFIG_NETFILTER_XT_MATCH_MARK=m
+CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
+CONFIG_NETFILTER_XT_MATCH_NFACCT=m
+CONFIG_NETFILTER_XT_MATCH_OSF=m
+CONFIG_NETFILTER_XT_MATCH_OWNER=m
+CONFIG_NETFILTER_XT_MATCH_POLICY=m
+CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
+CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
+CONFIG_NETFILTER_XT_MATCH_QUOTA=m
+CONFIG_NETFILTER_XT_MATCH_RATEEST=m
+CONFIG_NETFILTER_XT_MATCH_REALM=m
+CONFIG_NETFILTER_XT_MATCH_RECENT=m
+CONFIG_NETFILTER_XT_MATCH_SOCKET=m
+CONFIG_NETFILTER_XT_MATCH_STATE=m
+CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
+CONFIG_NETFILTER_XT_MATCH_STRING=m
+CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
+CONFIG_NETFILTER_XT_MATCH_TIME=m
+CONFIG_NETFILTER_XT_MATCH_U32=m
+CONFIG_IP_SET=m
+CONFIG_IP_SET_BITMAP_IP=m
+CONFIG_IP_SET_BITMAP_IPMAC=m
+CONFIG_IP_SET_BITMAP_PORT=m
+CONFIG_IP_SET_HASH_IP=m
+CONFIG_IP_SET_HASH_IPPORT=m
+CONFIG_IP_SET_HASH_IPPORTIP=m
+CONFIG_IP_SET_HASH_IPPORTNET=m
+CONFIG_IP_SET_HASH_NET=m
+CONFIG_IP_SET_HASH_NETPORT=m
+CONFIG_IP_SET_HASH_NETIFACE=m
+CONFIG_IP_SET_LIST_SET=m
+CONFIG_IP_VS=m
+CONFIG_IP_VS_PROTO_TCP=y
+CONFIG_IP_VS_PROTO_UDP=y
+CONFIG_IP_VS_PROTO_ESP=y
+CONFIG_IP_VS_PROTO_AH=y
+CONFIG_IP_VS_PROTO_SCTP=y
+CONFIG_IP_VS_RR=m
+CONFIG_IP_VS_WRR=m
+CONFIG_IP_VS_LC=m
+CONFIG_IP_VS_WLC=m
+CONFIG_IP_VS_LBLC=m
+CONFIG_IP_VS_LBLCR=m
+CONFIG_IP_VS_DH=m
+CONFIG_IP_VS_SH=m
+CONFIG_IP_VS_SED=m
+CONFIG_IP_VS_NQ=m
+CONFIG_IP_VS_FTP=m
+CONFIG_IP_VS_PE_SIP=m
+CONFIG_NF_CONNTRACK_IPV4=m
+CONFIG_IP_NF_IPTABLES=m
+CONFIG_IP_NF_MATCH_AH=m
+CONFIG_IP_NF_MATCH_ECN=m
+CONFIG_IP_NF_MATCH_TTL=m
+CONFIG_IP_NF_FILTER=m
+CONFIG_IP_NF_TARGET_REJECT=m
+CONFIG_IP_NF_NAT=m
+CONFIG_IP_NF_TARGET_MASQUERADE=m
+CONFIG_IP_NF_TARGET_NETMAP=m
+CONFIG_IP_NF_TARGET_REDIRECT=m
+CONFIG_IP_NF_MANGLE=m
+CONFIG_IP_NF_TARGET_CLUSTERIP=m
+CONFIG_IP_NF_TARGET_ECN=m
+CONFIG_IP_NF_TARGET_TTL=m
+CONFIG_IP_NF_RAW=m
+CONFIG_IP_NF_ARPTABLES=m
+CONFIG_IP_NF_ARPFILTER=m
+CONFIG_IP_NF_ARP_MANGLE=m
+CONFIG_NF_CONNTRACK_IPV6=m
+CONFIG_IP6_NF_IPTABLES=m
+CONFIG_IP6_NF_MATCH_AH=m
+CONFIG_IP6_NF_MATCH_EUI64=m
+CONFIG_IP6_NF_MATCH_FRAG=m
+CONFIG_IP6_NF_MATCH_OPTS=m
+CONFIG_IP6_NF_MATCH_HL=m
+CONFIG_IP6_NF_MATCH_IPV6HEADER=m
+CONFIG_IP6_NF_MATCH_MH=m
+CONFIG_IP6_NF_MATCH_RT=m
+CONFIG_IP6_NF_TARGET_HL=m
+CONFIG_IP6_NF_FILTER=m
+CONFIG_IP6_NF_TARGET_REJECT=m
+CONFIG_IP6_NF_MANGLE=m
+CONFIG_IP6_NF_RAW=m
+CONFIG_IP6_NF_NAT=m
+CONFIG_IP6_NF_TARGET_MASQUERADE=m
+CONFIG_IP6_NF_TARGET_NPT=m
+CONFIG_BRIDGE_NF_EBTABLES=m
+CONFIG_BRIDGE_EBT_BROUTE=m
+CONFIG_BRIDGE_EBT_T_FILTER=m
+CONFIG_BRIDGE_EBT_T_NAT=m
+CONFIG_BRIDGE_EBT_802_3=m
+CONFIG_BRIDGE_EBT_AMONG=m
+CONFIG_BRIDGE_EBT_ARP=m
+CONFIG_BRIDGE_EBT_IP=m
+CONFIG_BRIDGE_EBT_IP6=m
+CONFIG_BRIDGE_EBT_LIMIT=m
+CONFIG_BRIDGE_EBT_MARK=m
+CONFIG_BRIDGE_EBT_PKTTYPE=m
+CONFIG_BRIDGE_EBT_STP=m
+CONFIG_BRIDGE_EBT_VLAN=m
+CONFIG_BRIDGE_EBT_ARPREPLY=m
+CONFIG_BRIDGE_EBT_DNAT=m
+CONFIG_BRIDGE_EBT_MARK_T=m
+CONFIG_BRIDGE_EBT_REDIRECT=m
+CONFIG_BRIDGE_EBT_SNAT=m
+CONFIG_BRIDGE_EBT_LOG=m
+CONFIG_BRIDGE_EBT_NFLOG=m
+CONFIG_SCTP_COOKIE_HMAC_SHA1=y
+CONFIG_ATM=m
+CONFIG_L2TP=m
+CONFIG_L2TP_V3=y
+CONFIG_L2TP_IP=m
+CONFIG_L2TP_ETH=m
+CONFIG_BRIDGE=m
+CONFIG_VLAN_8021Q=m
+CONFIG_VLAN_8021Q_GVRP=y
+CONFIG_ATALK=m
+CONFIG_6LOWPAN=m
+CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_CBQ=m
+CONFIG_NET_SCH_HTB=m
+CONFIG_NET_SCH_HFSC=m
+CONFIG_NET_SCH_PRIO=m
+CONFIG_NET_SCH_MULTIQ=m
+CONFIG_NET_SCH_RED=m
+CONFIG_NET_SCH_SFB=m
+CONFIG_NET_SCH_SFQ=m
+CONFIG_NET_SCH_TEQL=m
+CONFIG_NET_SCH_TBF=m
+CONFIG_NET_SCH_GRED=m
+CONFIG_NET_SCH_DSMARK=m
+CONFIG_NET_SCH_NETEM=m
+CONFIG_NET_SCH_DRR=m
+CONFIG_NET_SCH_MQPRIO=m
+CONFIG_NET_SCH_CHOKE=m
+CONFIG_NET_SCH_QFQ=m
+CONFIG_NET_SCH_CODEL=m
+CONFIG_NET_SCH_FQ_CODEL=m
+CONFIG_NET_SCH_INGRESS=m
+CONFIG_NET_SCH_PLUG=m
+CONFIG_NET_CLS_BASIC=m
+CONFIG_NET_CLS_TCINDEX=m
+CONFIG_NET_CLS_ROUTE4=m
+CONFIG_NET_CLS_FW=m
+CONFIG_NET_CLS_U32=m
+CONFIG_CLS_U32_MARK=y
+CONFIG_NET_CLS_RSVP=m
+CONFIG_NET_CLS_RSVP6=m
+CONFIG_NET_CLS_FLOW=m
+CONFIG_NET_CLS_CGROUP=m
+CONFIG_NET_EMATCH=y
+CONFIG_NET_EMATCH_CMP=m
+CONFIG_NET_EMATCH_NBYTE=m
+CONFIG_NET_EMATCH_U32=m
+CONFIG_NET_EMATCH_META=m
+CONFIG_NET_EMATCH_TEXT=m
+CONFIG_NET_EMATCH_IPSET=m
+CONFIG_NET_CLS_ACT=y
+CONFIG_NET_ACT_POLICE=m
+CONFIG_NET_ACT_GACT=m
+CONFIG_GACT_PROB=y
+CONFIG_NET_ACT_MIRRED=m
+CONFIG_NET_ACT_IPT=m
+CONFIG_NET_ACT_NAT=m
+CONFIG_NET_ACT_PEDIT=m
+CONFIG_NET_ACT_SIMP=m
+CONFIG_NET_ACT_SKBEDIT=m
+CONFIG_NET_ACT_CSUM=m
+CONFIG_BATMAN_ADV=m
+CONFIG_OPENVSWITCH=m
+CONFIG_NET_PKTGEN=m
+CONFIG_HAMRADIO=y
+CONFIG_AX25=m
+CONFIG_NETROM=m
+CONFIG_ROSE=m
+CONFIG_MKISS=m
+CONFIG_6PACK=m
+CONFIG_BPQETHER=m
+CONFIG_BAYCOM_SER_FDX=m
+CONFIG_BAYCOM_SER_HDX=m
+CONFIG_YAM=m
+CONFIG_CAN=m
+CONFIG_CAN_VCAN=m
+CONFIG_CAN_MCP251X=m
+CONFIG_IRDA=m
+CONFIG_IRLAN=m
+CONFIG_IRNET=m
+CONFIG_IRCOMM=m
+CONFIG_IRDA_ULTRA=y
+CONFIG_IRDA_CACHE_LAST_LSAP=y
+CONFIG_IRDA_FAST_RR=y
+CONFIG_IRTTY_SIR=m
+CONFIG_KINGSUN_DONGLE=m
+CONFIG_KSDAZZLE_DONGLE=m
+CONFIG_KS959_DONGLE=m
+CONFIG_USB_IRDA=m
+CONFIG_SIGMATEL_FIR=m
+CONFIG_MCS_FIR=m
+CONFIG_BT=m
+CONFIG_BT_6LOWPAN=m
+CONFIG_BT_RFCOMM=m
+CONFIG_BT_RFCOMM_TTY=y
+CONFIG_BT_BNEP=m
+CONFIG_BT_BNEP_MC_FILTER=y
+CONFIG_BT_BNEP_PROTO_FILTER=y
+CONFIG_BT_HIDP=m
+CONFIG_BT_HCIBTUSB=m
+CONFIG_BT_HCIBCM203X=m
+CONFIG_BT_HCIBPA10X=m
+CONFIG_BT_HCIBFUSB=m
+CONFIG_BT_HCIVHCI=m
+CONFIG_BT_MRVL=m
+CONFIG_BT_MRVL_SDIO=m
+CONFIG_BT_ATH3K=m
+CONFIG_BT_WILINK=m
+CONFIG_CFG80211_WEXT=y
+CONFIG_MAC80211=m
+CONFIG_MAC80211_MESH=y
+CONFIG_WIMAX=m
+CONFIG_RFKILL=m
+CONFIG_RFKILL_INPUT=y
+CONFIG_NET_9P=m
+CONFIG_NFC=m
+CONFIG_NFC_PN533=m
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_DMA_CMA=y
+CONFIG_CMA_SIZE_MBYTES=5
+CONFIG_ZRAM=m
+CONFIG_ZRAM_LZ4_COMPRESS=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_CRYPTOLOOP=m
+CONFIG_BLK_DEV_DRBD=m
+CONFIG_BLK_DEV_NBD=m
+CONFIG_BLK_DEV_RAM=y
+CONFIG_CDROM_PKTCDVD=m
+CONFIG_ATA_OVER_ETH=m
+CONFIG_EEPROM_AT24=m
+CONFIG_SCSI=y
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_ST=m
+CONFIG_CHR_DEV_OSST=m
+CONFIG_BLK_DEV_SR=m
+CONFIG_CHR_DEV_SG=m
+CONFIG_SCSI_ISCSI_ATTRS=y
+CONFIG_ISCSI_TCP=m
+CONFIG_ISCSI_BOOT_SYSFS=m
+CONFIG_MD=y
+CONFIG_MD_LINEAR=m
+CONFIG_MD_RAID0=m
+CONFIG_BLK_DEV_DM=m
+CONFIG_DM_CRYPT=m
+CONFIG_DM_SNAPSHOT=m
+CONFIG_DM_MIRROR=m
+CONFIG_DM_LOG_USERSPACE=m
+CONFIG_DM_RAID=m
+CONFIG_DM_ZERO=m
+CONFIG_DM_DELAY=m
+CONFIG_NETDEVICES=y
+CONFIG_BONDING=m
+CONFIG_DUMMY=m
+CONFIG_IFB=m
+CONFIG_MACVLAN=m
+CONFIG_NETCONSOLE=m
+CONFIG_TUN=m
+CONFIG_VETH=m
+CONFIG_ENC28J60=m
+CONFIG_MDIO_BITBANG=m
+CONFIG_PPP=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPP_FILTER=y
+CONFIG_PPP_MPPE=m
+CONFIG_PPP_MULTILINK=y
+CONFIG_PPPOATM=m
+CONFIG_PPPOE=m
+CONFIG_PPPOL2TP=m
+CONFIG_PPP_ASYNC=m
+CONFIG_PPP_SYNC_TTY=m
+CONFIG_SLIP=m
+CONFIG_SLIP_COMPRESSED=y
+CONFIG_SLIP_SMART=y
+CONFIG_USB_CATC=m
+CONFIG_USB_KAWETH=m
+CONFIG_USB_PEGASUS=m
+CONFIG_USB_RTL8150=m
+CONFIG_USB_RTL8152=m
+CONFIG_USB_USBNET=y
+CONFIG_USB_NET_AX8817X=m
+CONFIG_USB_NET_AX88179_178A=m
+CONFIG_USB_NET_CDCETHER=m
+CONFIG_USB_NET_CDC_EEM=m
+CONFIG_USB_NET_CDC_NCM=m
+CONFIG_USB_NET_HUAWEI_CDC_NCM=m
+CONFIG_USB_NET_CDC_MBIM=m
+CONFIG_USB_NET_DM9601=m
+CONFIG_USB_NET_SR9700=m
+CONFIG_USB_NET_SR9800=m
+CONFIG_USB_NET_SMSC75XX=m
+CONFIG_USB_NET_SMSC95XX=y
+CONFIG_USB_NET_GL620A=m
+CONFIG_USB_NET_NET1080=m
+CONFIG_USB_NET_PLUSB=m
+CONFIG_USB_NET_MCS7830=m
+CONFIG_USB_NET_CDC_SUBSET=m
+CONFIG_USB_ALI_M5632=y
+CONFIG_USB_AN2720=y
+CONFIG_USB_EPSON2888=y
+CONFIG_USB_KC2190=y
+CONFIG_USB_NET_ZAURUS=m
+CONFIG_USB_NET_CX82310_ETH=m
+CONFIG_USB_NET_KALMIA=m
+CONFIG_USB_NET_QMI_WWAN=m
+CONFIG_USB_HSO=m
+CONFIG_USB_NET_INT51X1=m
+CONFIG_USB_IPHETH=m
+CONFIG_USB_SIERRA_NET=m
+CONFIG_USB_VL600=m
+CONFIG_LIBERTAS_THINFIRM=m
+CONFIG_LIBERTAS_THINFIRM_USB=m
+CONFIG_AT76C50X_USB=m
+CONFIG_USB_ZD1201=m
+CONFIG_USB_NET_RNDIS_WLAN=m
+CONFIG_RTL8187=m
+CONFIG_MAC80211_HWSIM=m
+CONFIG_ATH_CARDS=m
+CONFIG_ATH9K=m
+CONFIG_ATH9K_HTC=m
+CONFIG_CARL9170=m
+CONFIG_ATH6KL=m
+CONFIG_ATH6KL_USB=m
+CONFIG_AR5523=m
+CONFIG_B43=m
+# CONFIG_B43_PHY_N is not set
+CONFIG_B43LEGACY=m
+CONFIG_BRCMFMAC=m
+CONFIG_BRCMFMAC_USB=y
+CONFIG_HOSTAP=m
+CONFIG_LIBERTAS=m
+CONFIG_LIBERTAS_USB=m
+CONFIG_LIBERTAS_SDIO=m
+CONFIG_P54_COMMON=m
+CONFIG_P54_USB=m
+CONFIG_RT2X00=m
+CONFIG_RT2500USB=m
+CONFIG_RT73USB=m
+CONFIG_RT2800USB=m
+CONFIG_RT2800USB_RT3573=y
+CONFIG_RT2800USB_RT53XX=y
+CONFIG_RT2800USB_RT55XX=y
+CONFIG_RT2800USB_UNKNOWN=y
+CONFIG_RTL8192CU=m
+CONFIG_ZD1211RW=m
+CONFIG_MWIFIEX=m
+CONFIG_MWIFIEX_SDIO=m
+CONFIG_WIMAX_I2400M_USB=m
+CONFIG_INPUT_POLLDEV=m
+# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
+CONFIG_INPUT_JOYDEV=m
+CONFIG_INPUT_EVDEV=m
+# CONFIG_KEYBOARD_ATKBD is not set
+CONFIG_KEYBOARD_GPIO=m
+# CONFIG_INPUT_MOUSE is not set
+CONFIG_INPUT_JOYSTICK=y
+CONFIG_JOYSTICK_IFORCE=m
+CONFIG_JOYSTICK_IFORCE_USB=y
+CONFIG_JOYSTICK_XPAD=m
+CONFIG_JOYSTICK_XPAD_FF=y
+CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_TOUCHSCREEN_ADS7846=m
+CONFIG_TOUCHSCREEN_EGALAX=m
+CONFIG_TOUCHSCREEN_USB_COMPOSITE=m
+CONFIG_TOUCHSCREEN_STMPE=m
+CONFIG_INPUT_MISC=y
+CONFIG_INPUT_AD714X=m
+CONFIG_INPUT_ATI_REMOTE2=m
+CONFIG_INPUT_KEYSPAN_REMOTE=m
+CONFIG_INPUT_POWERMATE=m
+CONFIG_INPUT_YEALINK=m
+CONFIG_INPUT_CM109=m
+CONFIG_INPUT_UINPUT=m
+CONFIG_INPUT_GPIO_ROTARY_ENCODER=m
+CONFIG_INPUT_ADXL34X=m
+CONFIG_INPUT_CMA3000=m
+CONFIG_SERIO=m
+CONFIG_SERIO_RAW=m
+CONFIG_GAMEPORT=m
+CONFIG_GAMEPORT_NS558=m
+CONFIG_GAMEPORT_L4=m
+CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVKMEM is not set
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_TTY_PRINTK=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_BCM2708=m
+CONFIG_RAW_DRIVER=y
+CONFIG_BRCM_CHAR_DRIVERS=y
+CONFIG_BCM_VC_CMA=y
+CONFIG_BCM_VC_SM=y
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=m
+CONFIG_I2C_MUX=m
+CONFIG_I2C_BCM2708=m
+CONFIG_SPI=y
+CONFIG_SPI_BCM2835=m
+CONFIG_SPI_BCM2708=m
+CONFIG_SPI_SPIDEV=y
+CONFIG_PPS=m
+CONFIG_PPS_CLIENT_LDISC=m
+CONFIG_PPS_CLIENT_GPIO=m
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_ARIZONA=m
+CONFIG_GPIO_STMPE=y
+CONFIG_W1=m
+CONFIG_W1_MASTER_DS2490=m
+CONFIG_W1_MASTER_DS2482=m
+CONFIG_W1_MASTER_DS1WM=m
+CONFIG_W1_MASTER_GPIO=m
+CONFIG_W1_SLAVE_THERM=m
+CONFIG_W1_SLAVE_SMEM=m
+CONFIG_W1_SLAVE_DS2408=m
+CONFIG_W1_SLAVE_DS2413=m
+CONFIG_W1_SLAVE_DS2406=m
+CONFIG_W1_SLAVE_DS2423=m
+CONFIG_W1_SLAVE_DS2431=m
+CONFIG_W1_SLAVE_DS2433=m
+CONFIG_W1_SLAVE_DS2760=m
+CONFIG_W1_SLAVE_DS2780=m
+CONFIG_W1_SLAVE_DS2781=m
+CONFIG_W1_SLAVE_DS28E04=m
+CONFIG_W1_SLAVE_BQ27000=m
+CONFIG_BATTERY_DS2760=m
+# CONFIG_HWMON is not set
+CONFIG_THERMAL=y
+CONFIG_THERMAL_BCM2835=y
+CONFIG_WATCHDOG=y
+CONFIG_BCM2708_WDT=m
+CONFIG_UCB1400_CORE=m
+CONFIG_MFD_STMPE=y
+CONFIG_STMPE_SPI=y
+CONFIG_MFD_ARIZONA_I2C=m
+CONFIG_MFD_ARIZONA_SPI=m
+CONFIG_MFD_WM5102=y
+CONFIG_MEDIA_SUPPORT=m
+CONFIG_MEDIA_CAMERA_SUPPORT=y
+CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
+CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
+CONFIG_MEDIA_RADIO_SUPPORT=y
+CONFIG_MEDIA_RC_SUPPORT=y
+CONFIG_MEDIA_CONTROLLER=y
+CONFIG_LIRC=m
+CONFIG_RC_DEVICES=y
+CONFIG_RC_ATI_REMOTE=m
+CONFIG_IR_IMON=m
+CONFIG_IR_MCEUSB=m
+CONFIG_IR_REDRAT3=m
+CONFIG_IR_STREAMZAP=m
+CONFIG_IR_IGUANA=m
+CONFIG_IR_TTUSBIR=m
+CONFIG_RC_LOOPBACK=m
+CONFIG_IR_GPIO_CIR=m
+CONFIG_MEDIA_USB_SUPPORT=y
+CONFIG_USB_VIDEO_CLASS=m
+CONFIG_USB_M5602=m
+CONFIG_USB_STV06XX=m
+CONFIG_USB_GL860=m
+CONFIG_USB_GSPCA_BENQ=m
+CONFIG_USB_GSPCA_CONEX=m
+CONFIG_USB_GSPCA_CPIA1=m
+CONFIG_USB_GSPCA_DTCS033=m
+CONFIG_USB_GSPCA_ETOMS=m
+CONFIG_USB_GSPCA_FINEPIX=m
+CONFIG_USB_GSPCA_JEILINJ=m
+CONFIG_USB_GSPCA_JL2005BCD=m
+CONFIG_USB_GSPCA_KINECT=m
+CONFIG_USB_GSPCA_KONICA=m
+CONFIG_USB_GSPCA_MARS=m
+CONFIG_USB_GSPCA_MR97310A=m
+CONFIG_USB_GSPCA_NW80X=m
+CONFIG_USB_GSPCA_OV519=m
+CONFIG_USB_GSPCA_OV534=m
+CONFIG_USB_GSPCA_OV534_9=m
+CONFIG_USB_GSPCA_PAC207=m
+CONFIG_USB_GSPCA_PAC7302=m
+CONFIG_USB_GSPCA_PAC7311=m
+CONFIG_USB_GSPCA_SE401=m
+CONFIG_USB_GSPCA_SN9C2028=m
+CONFIG_USB_GSPCA_SN9C20X=m
+CONFIG_USB_GSPCA_SONIXB=m
+CONFIG_USB_GSPCA_SONIXJ=m
+CONFIG_USB_GSPCA_SPCA500=m
+CONFIG_USB_GSPCA_SPCA501=m
+CONFIG_USB_GSPCA_SPCA505=m
+CONFIG_USB_GSPCA_SPCA506=m
+CONFIG_USB_GSPCA_SPCA508=m
+CONFIG_USB_GSPCA_SPCA561=m
+CONFIG_USB_GSPCA_SPCA1528=m
+CONFIG_USB_GSPCA_SQ905=m
+CONFIG_USB_GSPCA_SQ905C=m
+CONFIG_USB_GSPCA_SQ930X=m
+CONFIG_USB_GSPCA_STK014=m
+CONFIG_USB_GSPCA_STK1135=m
+CONFIG_USB_GSPCA_STV0680=m
+CONFIG_USB_GSPCA_SUNPLUS=m
+CONFIG_USB_GSPCA_T613=m
+CONFIG_USB_GSPCA_TOPRO=m
+CONFIG_USB_GSPCA_TV8532=m
+CONFIG_USB_GSPCA_VC032X=m
+CONFIG_USB_GSPCA_VICAM=m
+CONFIG_USB_GSPCA_XIRLINK_CIT=m
+CONFIG_USB_GSPCA_ZC3XX=m
+CONFIG_USB_PWC=m
+CONFIG_VIDEO_CPIA2=m
+CONFIG_USB_ZR364XX=m
+CONFIG_USB_STKWEBCAM=m
+CONFIG_USB_S2255=m
+CONFIG_VIDEO_USBTV=m
+CONFIG_VIDEO_PVRUSB2=m
+CONFIG_VIDEO_HDPVR=m
+CONFIG_VIDEO_TLG2300=m
+CONFIG_VIDEO_USBVISION=m
+CONFIG_VIDEO_STK1160_COMMON=m
+CONFIG_VIDEO_STK1160_AC97=y
+CONFIG_VIDEO_GO7007=m
+CONFIG_VIDEO_GO7007_USB=m
+CONFIG_VIDEO_GO7007_USB_S2250_BOARD=m
+CONFIG_VIDEO_AU0828=m
+CONFIG_VIDEO_AU0828_RC=y
+CONFIG_VIDEO_CX231XX=m
+CONFIG_VIDEO_CX231XX_ALSA=m
+CONFIG_VIDEO_CX231XX_DVB=m
+CONFIG_VIDEO_TM6000=m
+CONFIG_VIDEO_TM6000_ALSA=m
+CONFIG_VIDEO_TM6000_DVB=m
+CONFIG_DVB_USB=m
+CONFIG_DVB_USB_A800=m
+CONFIG_DVB_USB_DIBUSB_MB=m
+CONFIG_DVB_USB_DIBUSB_MB_FAULTY=y
+CONFIG_DVB_USB_DIBUSB_MC=m
+CONFIG_DVB_USB_DIB0700=m
+CONFIG_DVB_USB_UMT_010=m
+CONFIG_DVB_USB_CXUSB=m
+CONFIG_DVB_USB_M920X=m
+CONFIG_DVB_USB_DIGITV=m
+CONFIG_DVB_USB_VP7045=m
+CONFIG_DVB_USB_VP702X=m
+CONFIG_DVB_USB_GP8PSK=m
+CONFIG_DVB_USB_NOVA_T_USB2=m
+CONFIG_DVB_USB_TTUSB2=m
+CONFIG_DVB_USB_DTT200U=m
+CONFIG_DVB_USB_OPERA1=m
+CONFIG_DVB_USB_AF9005=m
+CONFIG_DVB_USB_AF9005_REMOTE=m
+CONFIG_DVB_USB_PCTV452E=m
+CONFIG_DVB_USB_DW2102=m
+CONFIG_DVB_USB_CINERGY_T2=m
+CONFIG_DVB_USB_DTV5100=m
+CONFIG_DVB_USB_FRIIO=m
+CONFIG_DVB_USB_AZ6027=m
+CONFIG_DVB_USB_TECHNISAT_USB2=m
+CONFIG_DVB_USB_V2=m
+CONFIG_DVB_USB_AF9015=m
+CONFIG_DVB_USB_AF9035=m
+CONFIG_DVB_USB_ANYSEE=m
+CONFIG_DVB_USB_AU6610=m
+CONFIG_DVB_USB_AZ6007=m
+CONFIG_DVB_USB_CE6230=m
+CONFIG_DVB_USB_EC168=m
+CONFIG_DVB_USB_GL861=m
+CONFIG_DVB_USB_LME2510=m
+CONFIG_DVB_USB_MXL111SF=m
+CONFIG_DVB_USB_RTL28XXU=m
+CONFIG_DVB_USB_DVBSKY=m
+CONFIG_SMS_USB_DRV=m
+CONFIG_DVB_B2C2_FLEXCOP_USB=m
+CONFIG_DVB_AS102=m
+CONFIG_VIDEO_EM28XX=m
+CONFIG_VIDEO_EM28XX_V4L2=m
+CONFIG_VIDEO_EM28XX_ALSA=m
+CONFIG_VIDEO_EM28XX_DVB=m
+CONFIG_V4L_PLATFORM_DRIVERS=y
+CONFIG_VIDEO_BCM2835=y
+CONFIG_VIDEO_BCM2835_MMAL=m
+CONFIG_RADIO_SI470X=y
+CONFIG_USB_SI470X=m
+CONFIG_I2C_SI470X=m
+CONFIG_RADIO_SI4713=m
+CONFIG_I2C_SI4713=m
+CONFIG_USB_MR800=m
+CONFIG_USB_DSBR=m
+CONFIG_RADIO_SHARK=m
+CONFIG_RADIO_SHARK2=m
+CONFIG_USB_KEENE=m
+CONFIG_USB_MA901=m
+CONFIG_RADIO_TEA5764=m
+CONFIG_RADIO_SAA7706H=m
+CONFIG_RADIO_TEF6862=m
+CONFIG_RADIO_WL1273=m
+CONFIG_RADIO_WL128X=m
+# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set
+CONFIG_VIDEO_UDA1342=m
+CONFIG_VIDEO_SONY_BTF_MPX=m
+CONFIG_VIDEO_TVP5150=m
+CONFIG_VIDEO_TW2804=m
+CONFIG_VIDEO_TW9903=m
+CONFIG_VIDEO_TW9906=m
+CONFIG_VIDEO_OV7640=m
+CONFIG_VIDEO_MT9V011=m
+CONFIG_FB=y
+CONFIG_FB_BCM2708=y
+CONFIG_FB_UDL=m
+# CONFIG_BACKLIGHT_GENERIC is not set
+CONFIG_BACKLIGHT_GPIO=m
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_LOGO=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+CONFIG_SOUND=y
+CONFIG_SND=m
+CONFIG_SND_SEQUENCER=m
+CONFIG_SND_SEQ_DUMMY=m
+CONFIG_SND_MIXER_OSS=m
+CONFIG_SND_PCM_OSS=m
+CONFIG_SND_SEQUENCER_OSS=y
+CONFIG_SND_HRTIMER=m
+CONFIG_SND_DUMMY=m
+CONFIG_SND_ALOOP=m
+CONFIG_SND_VIRMIDI=m
+CONFIG_SND_MTPAV=m
+CONFIG_SND_SERIAL_U16550=m
+CONFIG_SND_MPU401=m
+CONFIG_SND_BCM2835=m
+CONFIG_SND_USB_AUDIO=m
+CONFIG_SND_USB_UA101=m
+CONFIG_SND_USB_CAIAQ=m
+CONFIG_SND_USB_CAIAQ_INPUT=y
+CONFIG_SND_USB_6FIRE=m
+CONFIG_SND_SOC=m
+CONFIG_SND_BCM2708_SOC_I2S=m
+CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
+CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
+CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
+CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
+CONFIG_SND_BCM2708_SOC_RPI_DAC=m
+CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
+CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
+CONFIG_SND_SIMPLE_CARD=m
+CONFIG_SOUND_PRIME=m
+CONFIG_HIDRAW=y
+CONFIG_HID_A4TECH=m
+CONFIG_HID_ACRUX=m
+CONFIG_HID_APPLE=m
+CONFIG_HID_BELKIN=m
+CONFIG_HID_CHERRY=m
+CONFIG_HID_CHICONY=m
+CONFIG_HID_CYPRESS=m
+CONFIG_HID_DRAGONRISE=m
+CONFIG_HID_EMS_FF=m
+CONFIG_HID_ELECOM=m
+CONFIG_HID_ELO=m
+CONFIG_HID_EZKEY=m
+CONFIG_HID_HOLTEK=m
+CONFIG_HID_KEYTOUCH=m
+CONFIG_HID_KYE=m
+CONFIG_HID_UCLOGIC=m
+CONFIG_HID_WALTOP=m
+CONFIG_HID_GYRATION=m
+CONFIG_HID_TWINHAN=m
+CONFIG_HID_KENSINGTON=m
+CONFIG_HID_LCPOWER=m
+CONFIG_HID_LOGITECH=m
+CONFIG_HID_MAGICMOUSE=m
+CONFIG_HID_MICROSOFT=m
+CONFIG_HID_MONTEREY=m
+CONFIG_HID_MULTITOUCH=m
+CONFIG_HID_NTRIG=m
+CONFIG_HID_ORTEK=m
+CONFIG_HID_PANTHERLORD=m
+CONFIG_HID_PETALYNX=m
+CONFIG_HID_PICOLCD=m
+CONFIG_HID_ROCCAT=m
+CONFIG_HID_SAMSUNG=m
+CONFIG_HID_SONY=m
+CONFIG_HID_SPEEDLINK=m
+CONFIG_HID_SUNPLUS=m
+CONFIG_HID_GREENASIA=m
+CONFIG_HID_SMARTJOYPLUS=m
+CONFIG_HID_TOPSEED=m
+CONFIG_HID_THINGM=m
+CONFIG_HID_THRUSTMASTER=m
+CONFIG_HID_WACOM=m
+CONFIG_HID_WIIMOTE=m
+CONFIG_HID_XINMO=m
+CONFIG_HID_ZEROPLUS=m
+CONFIG_HID_ZYDACRON=m
+CONFIG_HID_PID=y
+CONFIG_USB_HIDDEV=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_MON=m
+CONFIG_USB_DWCOTG=y
+CONFIG_USB_PRINTER=m
+CONFIG_USB_STORAGE=y
+CONFIG_USB_STORAGE_REALTEK=m
+CONFIG_USB_STORAGE_DATAFAB=m
+CONFIG_USB_STORAGE_FREECOM=m
+CONFIG_USB_STORAGE_ISD200=m
+CONFIG_USB_STORAGE_USBAT=m
+CONFIG_USB_STORAGE_SDDR09=m
+CONFIG_USB_STORAGE_SDDR55=m
+CONFIG_USB_STORAGE_JUMPSHOT=m
+CONFIG_USB_STORAGE_ALAUDA=m
+CONFIG_USB_STORAGE_ONETOUCH=m
+CONFIG_USB_STORAGE_KARMA=m
+CONFIG_USB_STORAGE_CYPRESS_ATACB=m
+CONFIG_USB_STORAGE_ENE_UB6250=m
+CONFIG_USB_MDC800=m
+CONFIG_USB_MICROTEK=m
+CONFIG_USBIP_CORE=m
+CONFIG_USBIP_VHCI_HCD=m
+CONFIG_USBIP_HOST=m
+CONFIG_USB_SERIAL=m
+CONFIG_USB_SERIAL_GENERIC=y
+CONFIG_USB_SERIAL_AIRCABLE=m
+CONFIG_USB_SERIAL_ARK3116=m
+CONFIG_USB_SERIAL_BELKIN=m
+CONFIG_USB_SERIAL_CH341=m
+CONFIG_USB_SERIAL_WHITEHEAT=m
+CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
+CONFIG_USB_SERIAL_CP210X=m
+CONFIG_USB_SERIAL_CYPRESS_M8=m
+CONFIG_USB_SERIAL_EMPEG=m
+CONFIG_USB_SERIAL_FTDI_SIO=m
+CONFIG_USB_SERIAL_VISOR=m
+CONFIG_USB_SERIAL_IPAQ=m
+CONFIG_USB_SERIAL_IR=m
+CONFIG_USB_SERIAL_EDGEPORT=m
+CONFIG_USB_SERIAL_EDGEPORT_TI=m
+CONFIG_USB_SERIAL_F81232=m
+CONFIG_USB_SERIAL_GARMIN=m
+CONFIG_USB_SERIAL_IPW=m
+CONFIG_USB_SERIAL_IUU=m
+CONFIG_USB_SERIAL_KEYSPAN_PDA=m
+CONFIG_USB_SERIAL_KEYSPAN=m
+CONFIG_USB_SERIAL_KLSI=m
+CONFIG_USB_SERIAL_KOBIL_SCT=m
+CONFIG_USB_SERIAL_MCT_U232=m
+CONFIG_USB_SERIAL_METRO=m
+CONFIG_USB_SERIAL_MOS7720=m
+CONFIG_USB_SERIAL_MOS7840=m
+CONFIG_USB_SERIAL_NAVMAN=m
+CONFIG_USB_SERIAL_PL2303=m
+CONFIG_USB_SERIAL_OTI6858=m
+CONFIG_USB_SERIAL_QCAUX=m
+CONFIG_USB_SERIAL_QUALCOMM=m
+CONFIG_USB_SERIAL_SPCP8X5=m
+CONFIG_USB_SERIAL_SAFE=m
+CONFIG_USB_SERIAL_SIERRAWIRELESS=m
+CONFIG_USB_SERIAL_SYMBOL=m
+CONFIG_USB_SERIAL_TI=m
+CONFIG_USB_SERIAL_CYBERJACK=m
+CONFIG_USB_SERIAL_XIRCOM=m
+CONFIG_USB_SERIAL_OPTION=m
+CONFIG_USB_SERIAL_OMNINET=m
+CONFIG_USB_SERIAL_OPTICON=m
+CONFIG_USB_SERIAL_XSENS_MT=m
+CONFIG_USB_SERIAL_WISHBONE=m
+CONFIG_USB_SERIAL_SSU100=m
+CONFIG_USB_SERIAL_QT2=m
+CONFIG_USB_SERIAL_DEBUG=m
+CONFIG_USB_EMI62=m
+CONFIG_USB_EMI26=m
+CONFIG_USB_ADUTUX=m
+CONFIG_USB_SEVSEG=m
+CONFIG_USB_RIO500=m
+CONFIG_USB_LEGOTOWER=m
+CONFIG_USB_LCD=m
+CONFIG_USB_LED=m
+CONFIG_USB_CYPRESS_CY7C63=m
+CONFIG_USB_CYTHERM=m
+CONFIG_USB_IDMOUSE=m
+CONFIG_USB_FTDI_ELAN=m
+CONFIG_USB_APPLEDISPLAY=m
+CONFIG_USB_LD=m
+CONFIG_USB_TRANCEVIBRATOR=m
+CONFIG_USB_IOWARRIOR=m
+CONFIG_USB_TEST=m
+CONFIG_USB_ISIGHTFW=m
+CONFIG_USB_YUREX=m
+CONFIG_USB_ATM=m
+CONFIG_USB_SPEEDTOUCH=m
+CONFIG_USB_CXACRU=m
+CONFIG_USB_UEAGLEATM=m
+CONFIG_USB_XUSBATM=m
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK_MINORS=32
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MMC_BCM2835=y
+CONFIG_MMC_BCM2835_DMA=y
+CONFIG_MMC_SPI=m
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGER_TIMER=y
+CONFIG_LEDS_TRIGGER_ONESHOT=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_BACKLIGHT=y
+CONFIG_LEDS_TRIGGER_CPU=y
+CONFIG_LEDS_TRIGGER_GPIO=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
+CONFIG_LEDS_TRIGGER_TRANSIENT=m
+CONFIG_LEDS_TRIGGER_CAMERA=m
+CONFIG_LEDS_TRIGGER_INPUT=y
+CONFIG_RTC_CLASS=y
+# CONFIG_RTC_HCTOSYS is not set
+CONFIG_RTC_DRV_DS1307=m
+CONFIG_RTC_DRV_DS1374=m
+CONFIG_RTC_DRV_DS1672=m
+CONFIG_RTC_DRV_DS3232=m
+CONFIG_RTC_DRV_MAX6900=m
+CONFIG_RTC_DRV_RS5C372=m
+CONFIG_RTC_DRV_ISL1208=m
+CONFIG_RTC_DRV_ISL12022=m
+CONFIG_RTC_DRV_ISL12057=m
+CONFIG_RTC_DRV_X1205=m
+CONFIG_RTC_DRV_PCF2127=m
+CONFIG_RTC_DRV_PCF8523=m
+CONFIG_RTC_DRV_PCF8563=m
+CONFIG_RTC_DRV_PCF8583=m
+CONFIG_RTC_DRV_M41T80=m
+CONFIG_RTC_DRV_BQ32K=m
+CONFIG_RTC_DRV_S35390A=m
+CONFIG_RTC_DRV_FM3130=m
+CONFIG_RTC_DRV_RX8581=m
+CONFIG_RTC_DRV_RX8025=m
+CONFIG_RTC_DRV_EM3027=m
+CONFIG_RTC_DRV_RV3029C2=m
+CONFIG_RTC_DRV_M41T93=m
+CONFIG_RTC_DRV_M41T94=m
+CONFIG_RTC_DRV_DS1305=m
+CONFIG_RTC_DRV_DS1390=m
+CONFIG_RTC_DRV_MAX6902=m
+CONFIG_RTC_DRV_R9701=m
+CONFIG_RTC_DRV_RS5C348=m
+CONFIG_RTC_DRV_DS3234=m
+CONFIG_RTC_DRV_PCF2123=m
+CONFIG_RTC_DRV_RX4581=m
+CONFIG_DMADEVICES=y
+CONFIG_DMA_BCM2708=y
+CONFIG_UIO=m
+CONFIG_UIO_PDRV_GENIRQ=m
+CONFIG_STAGING=y
+CONFIG_PRISM2_USB=m
+CONFIG_R8712U=m
+CONFIG_R8188EU=m
+CONFIG_R8723AU=m
+CONFIG_VT6656=m
+CONFIG_SPEAKUP=m
+CONFIG_SPEAKUP_SYNTH_SOFT=m
+CONFIG_STAGING_MEDIA=y
+CONFIG_LIRC_STAGING=y
+CONFIG_LIRC_IGORPLUGUSB=m
+CONFIG_LIRC_IMON=m
+CONFIG_LIRC_RPI=m
+CONFIG_LIRC_SASEM=m
+CONFIG_LIRC_SERIAL=m
+CONFIG_FB_TFT=m
+CONFIG_FB_TFT_AGM1264K_FL=m
+CONFIG_FB_TFT_BD663474=m
+CONFIG_FB_TFT_HX8340BN=m
+CONFIG_FB_TFT_HX8347D=m
+CONFIG_FB_TFT_HX8353D=m
+CONFIG_FB_TFT_ILI9320=m
+CONFIG_FB_TFT_ILI9325=m
+CONFIG_FB_TFT_ILI9340=m
+CONFIG_FB_TFT_ILI9341=m
+CONFIG_FB_TFT_ILI9481=m
+CONFIG_FB_TFT_ILI9486=m
+CONFIG_FB_TFT_PCD8544=m
+CONFIG_FB_TFT_RA8875=m
+CONFIG_FB_TFT_S6D02A1=m
+CONFIG_FB_TFT_S6D1121=m
+CONFIG_FB_TFT_SSD1289=m
+CONFIG_FB_TFT_SSD1306=m
+CONFIG_FB_TFT_SSD1331=m
+CONFIG_FB_TFT_SSD1351=m
+CONFIG_FB_TFT_ST7735R=m
+CONFIG_FB_TFT_TINYLCD=m
+CONFIG_FB_TFT_TLS8204=m
+CONFIG_FB_TFT_UC1701=m
+CONFIG_FB_TFT_UPD161704=m
+CONFIG_FB_TFT_WATTEROTT=m
+CONFIG_FB_FLEX=m
+CONFIG_FB_TFT_FBTFT_DEVICE=m
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_EXTCON=m
+CONFIG_EXTCON_ARIZONA=m
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_REISERFS_FS=m
+CONFIG_REISERFS_FS_XATTR=y
+CONFIG_REISERFS_FS_POSIX_ACL=y
+CONFIG_REISERFS_FS_SECURITY=y
+CONFIG_JFS_FS=m
+CONFIG_JFS_POSIX_ACL=y
+CONFIG_JFS_SECURITY=y
+CONFIG_JFS_STATISTICS=y
+CONFIG_XFS_FS=m
+CONFIG_XFS_QUOTA=y
+CONFIG_XFS_POSIX_ACL=y
+CONFIG_XFS_RT=y
+CONFIG_GFS2_FS=m
+CONFIG_OCFS2_FS=m
+CONFIG_BTRFS_FS=m
+CONFIG_BTRFS_FS_POSIX_ACL=y
+CONFIG_NILFS2_FS=m
+CONFIG_FANOTIFY=y
+CONFIG_QFMT_V1=m
+CONFIG_QFMT_V2=m
+CONFIG_AUTOFS4_FS=y
+CONFIG_FUSE_FS=m
+CONFIG_CUSE=m
+CONFIG_FSCACHE=y
+CONFIG_FSCACHE_STATS=y
+CONFIG_FSCACHE_HISTOGRAM=y
+CONFIG_CACHEFILES=y
+CONFIG_ISO9660_FS=m
+CONFIG_JOLIET=y
+CONFIG_ZISOFS=y
+CONFIG_UDF_FS=m
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
+CONFIG_NTFS_FS=m
+CONFIG_NTFS_RW=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_CONFIGFS_FS=y
+CONFIG_ECRYPT_FS=m
+CONFIG_HFS_FS=m
+CONFIG_HFSPLUS_FS=m
+CONFIG_SQUASHFS=m
+CONFIG_SQUASHFS_XATTR=y
+CONFIG_SQUASHFS_LZO=y
+CONFIG_SQUASHFS_XZ=y
+CONFIG_F2FS_FS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_NFS_SWAP=y
+CONFIG_ROOT_NFS=y
+CONFIG_NFS_FSCACHE=y
+CONFIG_NFSD=m
+CONFIG_NFSD_V3_ACL=y
+CONFIG_NFSD_V4=y
+CONFIG_CIFS=m
+CONFIG_CIFS_WEAK_PW_HASH=y
+CONFIG_CIFS_XATTR=y
+CONFIG_CIFS_POSIX=y
+CONFIG_9P_FS=m
+CONFIG_9P_FS_POSIX_ACL=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_CODEPAGE_737=m
+CONFIG_NLS_CODEPAGE_775=m
+CONFIG_NLS_CODEPAGE_850=m
+CONFIG_NLS_CODEPAGE_852=m
+CONFIG_NLS_CODEPAGE_855=m
+CONFIG_NLS_CODEPAGE_857=m
+CONFIG_NLS_CODEPAGE_860=m
+CONFIG_NLS_CODEPAGE_861=m
+CONFIG_NLS_CODEPAGE_862=m
+CONFIG_NLS_CODEPAGE_863=m
+CONFIG_NLS_CODEPAGE_864=m
+CONFIG_NLS_CODEPAGE_865=m
+CONFIG_NLS_CODEPAGE_866=m
+CONFIG_NLS_CODEPAGE_869=m
+CONFIG_NLS_CODEPAGE_936=m
+CONFIG_NLS_CODEPAGE_950=m
+CONFIG_NLS_CODEPAGE_932=m
+CONFIG_NLS_CODEPAGE_949=m
+CONFIG_NLS_CODEPAGE_874=m
+CONFIG_NLS_ISO8859_8=m
+CONFIG_NLS_CODEPAGE_1250=m
+CONFIG_NLS_CODEPAGE_1251=m
+CONFIG_NLS_ASCII=y
+CONFIG_NLS_ISO8859_1=m
+CONFIG_NLS_ISO8859_2=m
+CONFIG_NLS_ISO8859_3=m
+CONFIG_NLS_ISO8859_4=m
+CONFIG_NLS_ISO8859_5=m
+CONFIG_NLS_ISO8859_6=m
+CONFIG_NLS_ISO8859_7=m
+CONFIG_NLS_ISO8859_9=m
+CONFIG_NLS_ISO8859_13=m
+CONFIG_NLS_ISO8859_14=m
+CONFIG_NLS_ISO8859_15=m
+CONFIG_NLS_KOI8_R=m
+CONFIG_NLS_KOI8_U=m
+CONFIG_DLM=m
+CONFIG_PRINTK_TIME=y
+CONFIG_BOOT_PRINTK_DELAY=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_TIMER_STATS=y
+# CONFIG_DEBUG_PREEMPT is not set
+CONFIG_IRQSOFF_TRACER=y
+CONFIG_SCHED_TRACER=y
+CONFIG_STACK_TRACER=y
+CONFIG_BLK_DEV_IO_TRACE=y
+# CONFIG_KPROBE_EVENT is not set
+CONFIG_FUNCTION_PROFILER=y
+CONFIG_KGDB=y
+CONFIG_KGDB_KDB=y
+CONFIG_KDB_KEYBOARD=y
+CONFIG_CRYPTO_USER=m
+CONFIG_CRYPTO_NULL=m
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_CTS=m
+CONFIG_CRYPTO_XTS=m
+CONFIG_CRYPTO_XCBC=m
+CONFIG_CRYPTO_SHA1_ARM_NEON=m
+CONFIG_CRYPTO_SHA512_ARM_NEON=m
+CONFIG_CRYPTO_TGR192=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_AES_ARM_BS=m
+CONFIG_CRYPTO_CAST5=m
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_HW is not set
+CONFIG_CRC_ITU_T=y
+CONFIG_LIBCRC32C=y
diff -Nur linux-3.18.10/arch/arm/configs/bcmrpi_defconfig linux-rpi/arch/arm/configs/bcmrpi_defconfig
--- linux-3.18.10/arch/arm/configs/bcmrpi_defconfig	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/configs/bcmrpi_defconfig	2015-03-26 11:46:41.736226555 +0100
@@ -0,0 +1,1200 @@
+# CONFIG_ARM_PATCH_PHYS_VIRT is not set
+CONFIG_PHYS_OFFSET=0
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_FHANDLE=y
+CONFIG_AUDIT=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_XACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_RESOURCE_COUNTERS=y
+CONFIG_MEMCG=y
+CONFIG_BLK_CGROUP=y
+CONFIG_NAMESPACES=y
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_EMBEDDED=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_PROFILING=y
+CONFIG_OPROFILE=m
+CONFIG_KPROBES=y
+CONFIG_JUMP_LABEL=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODVERSIONS=y
+CONFIG_MODULE_SRCVERSION_ALL=y
+CONFIG_BLK_DEV_THROTTLING=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_MAC_PARTITION=y
+CONFIG_CFQ_GROUP_IOSCHED=y
+CONFIG_ARCH_BCM2708=y
+CONFIG_BCM2708_DT=y
+CONFIG_PREEMPT=y
+CONFIG_AEABI=y
+CONFIG_CLEANCACHE=y
+CONFIG_FRONTSWAP=y
+CONFIG_CMA=y
+CONFIG_ZSMALLOC=m
+CONFIG_PGTABLE_MAPPING=y
+CONFIG_UACCESS_WITH_MEMCPY=y
+CONFIG_SECCOMP=y
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_CMDLINE="console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait"
+CONFIG_KEXEC=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_STAT=m
+CONFIG_CPU_FREQ_STAT_DETAILS=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_VFP=y
+CONFIG_BINFMT_MISC=m
+# CONFIG_SUSPEND is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_XFRM_USER=y
+CONFIG_NET_KEY=m
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_VERBOSE=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_RARP=y
+CONFIG_NET_IPIP=m
+CONFIG_NET_IPGRE_DEMUX=m
+CONFIG_NET_IPGRE=m
+CONFIG_IP_MROUTE=y
+CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IP_PIMSM_V1=y
+CONFIG_IP_PIMSM_V2=y
+CONFIG_SYN_COOKIES=y
+CONFIG_INET_AH=m
+CONFIG_INET_ESP=m
+CONFIG_INET_IPCOMP=m
+CONFIG_INET_XFRM_MODE_TRANSPORT=m
+CONFIG_INET_XFRM_MODE_TUNNEL=m
+CONFIG_INET_XFRM_MODE_BEET=m
+CONFIG_INET_LRO=m
+CONFIG_INET_DIAG=m
+CONFIG_INET6_AH=m
+CONFIG_INET6_ESP=m
+CONFIG_INET6_IPCOMP=m
+CONFIG_IPV6_TUNNEL=m
+CONFIG_IPV6_MULTIPLE_TABLES=y
+CONFIG_IPV6_MROUTE=y
+CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IPV6_PIMSM_V2=y
+CONFIG_NETFILTER=y
+CONFIG_NF_CONNTRACK=m
+CONFIG_NF_CONNTRACK_ZONES=y
+CONFIG_NF_CONNTRACK_EVENTS=y
+CONFIG_NF_CONNTRACK_TIMESTAMP=y
+CONFIG_NF_CT_PROTO_DCCP=m
+CONFIG_NF_CT_PROTO_UDPLITE=m
+CONFIG_NF_CONNTRACK_AMANDA=m
+CONFIG_NF_CONNTRACK_FTP=m
+CONFIG_NF_CONNTRACK_H323=m
+CONFIG_NF_CONNTRACK_IRC=m
+CONFIG_NF_CONNTRACK_NETBIOS_NS=m
+CONFIG_NF_CONNTRACK_SNMP=m
+CONFIG_NF_CONNTRACK_PPTP=m
+CONFIG_NF_CONNTRACK_SANE=m
+CONFIG_NF_CONNTRACK_SIP=m
+CONFIG_NF_CONNTRACK_TFTP=m
+CONFIG_NF_CT_NETLINK=m
+CONFIG_NETFILTER_XT_SET=m
+CONFIG_NETFILTER_XT_TARGET_AUDIT=m
+CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
+CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
+CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
+CONFIG_NETFILTER_XT_TARGET_DSCP=m
+CONFIG_NETFILTER_XT_TARGET_HMARK=m
+CONFIG_NETFILTER_XT_TARGET_IDLETIMER=m
+CONFIG_NETFILTER_XT_TARGET_LED=m
+CONFIG_NETFILTER_XT_TARGET_LOG=m
+CONFIG_NETFILTER_XT_TARGET_MARK=m
+CONFIG_NETFILTER_XT_TARGET_NFLOG=m
+CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
+CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
+CONFIG_NETFILTER_XT_TARGET_TEE=m
+CONFIG_NETFILTER_XT_TARGET_TPROXY=m
+CONFIG_NETFILTER_XT_TARGET_TRACE=m
+CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
+CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m
+CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
+CONFIG_NETFILTER_XT_MATCH_BPF=m
+CONFIG_NETFILTER_XT_MATCH_CLUSTER=m
+CONFIG_NETFILTER_XT_MATCH_COMMENT=m
+CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
+CONFIG_NETFILTER_XT_MATCH_CONNLABEL=m
+CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
+CONFIG_NETFILTER_XT_MATCH_CPU=m
+CONFIG_NETFILTER_XT_MATCH_DCCP=m
+CONFIG_NETFILTER_XT_MATCH_DEVGROUP=m
+CONFIG_NETFILTER_XT_MATCH_DSCP=m
+CONFIG_NETFILTER_XT_MATCH_ESP=m
+CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_HELPER=m
+CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
+CONFIG_NETFILTER_XT_MATCH_IPVS=m
+CONFIG_NETFILTER_XT_MATCH_LENGTH=m
+CONFIG_NETFILTER_XT_MATCH_LIMIT=m
+CONFIG_NETFILTER_XT_MATCH_MAC=m
+CONFIG_NETFILTER_XT_MATCH_MARK=m
+CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
+CONFIG_NETFILTER_XT_MATCH_NFACCT=m
+CONFIG_NETFILTER_XT_MATCH_OSF=m
+CONFIG_NETFILTER_XT_MATCH_OWNER=m
+CONFIG_NETFILTER_XT_MATCH_POLICY=m
+CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
+CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
+CONFIG_NETFILTER_XT_MATCH_QUOTA=m
+CONFIG_NETFILTER_XT_MATCH_RATEEST=m
+CONFIG_NETFILTER_XT_MATCH_REALM=m
+CONFIG_NETFILTER_XT_MATCH_RECENT=m
+CONFIG_NETFILTER_XT_MATCH_SOCKET=m
+CONFIG_NETFILTER_XT_MATCH_STATE=m
+CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
+CONFIG_NETFILTER_XT_MATCH_STRING=m
+CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
+CONFIG_NETFILTER_XT_MATCH_TIME=m
+CONFIG_NETFILTER_XT_MATCH_U32=m
+CONFIG_IP_SET=m
+CONFIG_IP_SET_BITMAP_IP=m
+CONFIG_IP_SET_BITMAP_IPMAC=m
+CONFIG_IP_SET_BITMAP_PORT=m
+CONFIG_IP_SET_HASH_IP=m
+CONFIG_IP_SET_HASH_IPPORT=m
+CONFIG_IP_SET_HASH_IPPORTIP=m
+CONFIG_IP_SET_HASH_IPPORTNET=m
+CONFIG_IP_SET_HASH_NET=m
+CONFIG_IP_SET_HASH_NETPORT=m
+CONFIG_IP_SET_HASH_NETIFACE=m
+CONFIG_IP_SET_LIST_SET=m
+CONFIG_IP_VS=m
+CONFIG_IP_VS_PROTO_TCP=y
+CONFIG_IP_VS_PROTO_UDP=y
+CONFIG_IP_VS_PROTO_ESP=y
+CONFIG_IP_VS_PROTO_AH=y
+CONFIG_IP_VS_PROTO_SCTP=y
+CONFIG_IP_VS_RR=m
+CONFIG_IP_VS_WRR=m
+CONFIG_IP_VS_LC=m
+CONFIG_IP_VS_WLC=m
+CONFIG_IP_VS_LBLC=m
+CONFIG_IP_VS_LBLCR=m
+CONFIG_IP_VS_DH=m
+CONFIG_IP_VS_SH=m
+CONFIG_IP_VS_SED=m
+CONFIG_IP_VS_NQ=m
+CONFIG_IP_VS_FTP=m
+CONFIG_IP_VS_PE_SIP=m
+CONFIG_NF_CONNTRACK_IPV4=m
+CONFIG_IP_NF_IPTABLES=m
+CONFIG_IP_NF_MATCH_AH=m
+CONFIG_IP_NF_MATCH_ECN=m
+CONFIG_IP_NF_MATCH_TTL=m
+CONFIG_IP_NF_FILTER=m
+CONFIG_IP_NF_TARGET_REJECT=m
+CONFIG_IP_NF_NAT=m
+CONFIG_IP_NF_TARGET_MASQUERADE=m
+CONFIG_IP_NF_TARGET_NETMAP=m
+CONFIG_IP_NF_TARGET_REDIRECT=m
+CONFIG_IP_NF_MANGLE=m
+CONFIG_IP_NF_TARGET_CLUSTERIP=m
+CONFIG_IP_NF_TARGET_ECN=m
+CONFIG_IP_NF_TARGET_TTL=m
+CONFIG_IP_NF_RAW=m
+CONFIG_IP_NF_ARPTABLES=m
+CONFIG_IP_NF_ARPFILTER=m
+CONFIG_IP_NF_ARP_MANGLE=m
+CONFIG_NF_CONNTRACK_IPV6=m
+CONFIG_IP6_NF_IPTABLES=m
+CONFIG_IP6_NF_MATCH_AH=m
+CONFIG_IP6_NF_MATCH_EUI64=m
+CONFIG_IP6_NF_MATCH_FRAG=m
+CONFIG_IP6_NF_MATCH_OPTS=m
+CONFIG_IP6_NF_MATCH_HL=m
+CONFIG_IP6_NF_MATCH_IPV6HEADER=m
+CONFIG_IP6_NF_MATCH_MH=m
+CONFIG_IP6_NF_MATCH_RT=m
+CONFIG_IP6_NF_TARGET_HL=m
+CONFIG_IP6_NF_FILTER=m
+CONFIG_IP6_NF_TARGET_REJECT=m
+CONFIG_IP6_NF_MANGLE=m
+CONFIG_IP6_NF_RAW=m
+CONFIG_IP6_NF_NAT=m
+CONFIG_IP6_NF_TARGET_MASQUERADE=m
+CONFIG_IP6_NF_TARGET_NPT=m
+CONFIG_BRIDGE_NF_EBTABLES=m
+CONFIG_BRIDGE_EBT_BROUTE=m
+CONFIG_BRIDGE_EBT_T_FILTER=m
+CONFIG_BRIDGE_EBT_T_NAT=m
+CONFIG_BRIDGE_EBT_802_3=m
+CONFIG_BRIDGE_EBT_AMONG=m
+CONFIG_BRIDGE_EBT_ARP=m
+CONFIG_BRIDGE_EBT_IP=m
+CONFIG_BRIDGE_EBT_IP6=m
+CONFIG_BRIDGE_EBT_LIMIT=m
+CONFIG_BRIDGE_EBT_MARK=m
+CONFIG_BRIDGE_EBT_PKTTYPE=m
+CONFIG_BRIDGE_EBT_STP=m
+CONFIG_BRIDGE_EBT_VLAN=m
+CONFIG_BRIDGE_EBT_ARPREPLY=m
+CONFIG_BRIDGE_EBT_DNAT=m
+CONFIG_BRIDGE_EBT_MARK_T=m
+CONFIG_BRIDGE_EBT_REDIRECT=m
+CONFIG_BRIDGE_EBT_SNAT=m
+CONFIG_BRIDGE_EBT_LOG=m
+CONFIG_BRIDGE_EBT_NFLOG=m
+CONFIG_SCTP_COOKIE_HMAC_SHA1=y
+CONFIG_ATM=m
+CONFIG_L2TP=m
+CONFIG_L2TP_V3=y
+CONFIG_L2TP_IP=m
+CONFIG_L2TP_ETH=m
+CONFIG_BRIDGE=m
+CONFIG_VLAN_8021Q=m
+CONFIG_VLAN_8021Q_GVRP=y
+CONFIG_ATALK=m
+CONFIG_6LOWPAN=m
+CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_CBQ=m
+CONFIG_NET_SCH_HTB=m
+CONFIG_NET_SCH_HFSC=m
+CONFIG_NET_SCH_PRIO=m
+CONFIG_NET_SCH_MULTIQ=m
+CONFIG_NET_SCH_RED=m
+CONFIG_NET_SCH_SFB=m
+CONFIG_NET_SCH_SFQ=m
+CONFIG_NET_SCH_TEQL=m
+CONFIG_NET_SCH_TBF=m
+CONFIG_NET_SCH_GRED=m
+CONFIG_NET_SCH_DSMARK=m
+CONFIG_NET_SCH_NETEM=m
+CONFIG_NET_SCH_DRR=m
+CONFIG_NET_SCH_MQPRIO=m
+CONFIG_NET_SCH_CHOKE=m
+CONFIG_NET_SCH_QFQ=m
+CONFIG_NET_SCH_CODEL=m
+CONFIG_NET_SCH_FQ_CODEL=m
+CONFIG_NET_SCH_INGRESS=m
+CONFIG_NET_SCH_PLUG=m
+CONFIG_NET_CLS_BASIC=m
+CONFIG_NET_CLS_TCINDEX=m
+CONFIG_NET_CLS_ROUTE4=m
+CONFIG_NET_CLS_FW=m
+CONFIG_NET_CLS_U32=m
+CONFIG_CLS_U32_MARK=y
+CONFIG_NET_CLS_RSVP=m
+CONFIG_NET_CLS_RSVP6=m
+CONFIG_NET_CLS_FLOW=m
+CONFIG_NET_CLS_CGROUP=m
+CONFIG_NET_EMATCH=y
+CONFIG_NET_EMATCH_CMP=m
+CONFIG_NET_EMATCH_NBYTE=m
+CONFIG_NET_EMATCH_U32=m
+CONFIG_NET_EMATCH_META=m
+CONFIG_NET_EMATCH_TEXT=m
+CONFIG_NET_EMATCH_IPSET=m
+CONFIG_NET_CLS_ACT=y
+CONFIG_NET_ACT_POLICE=m
+CONFIG_NET_ACT_GACT=m
+CONFIG_GACT_PROB=y
+CONFIG_NET_ACT_MIRRED=m
+CONFIG_NET_ACT_IPT=m
+CONFIG_NET_ACT_NAT=m
+CONFIG_NET_ACT_PEDIT=m
+CONFIG_NET_ACT_SIMP=m
+CONFIG_NET_ACT_SKBEDIT=m
+CONFIG_NET_ACT_CSUM=m
+CONFIG_BATMAN_ADV=m
+CONFIG_OPENVSWITCH=m
+CONFIG_NET_PKTGEN=m
+CONFIG_HAMRADIO=y
+CONFIG_AX25=m
+CONFIG_NETROM=m
+CONFIG_ROSE=m
+CONFIG_MKISS=m
+CONFIG_6PACK=m
+CONFIG_BPQETHER=m
+CONFIG_BAYCOM_SER_FDX=m
+CONFIG_BAYCOM_SER_HDX=m
+CONFIG_YAM=m
+CONFIG_CAN=m
+CONFIG_CAN_VCAN=m
+CONFIG_CAN_MCP251X=m
+CONFIG_IRDA=m
+CONFIG_IRLAN=m
+CONFIG_IRNET=m
+CONFIG_IRCOMM=m
+CONFIG_IRDA_ULTRA=y
+CONFIG_IRDA_CACHE_LAST_LSAP=y
+CONFIG_IRDA_FAST_RR=y
+CONFIG_IRTTY_SIR=m
+CONFIG_KINGSUN_DONGLE=m
+CONFIG_KSDAZZLE_DONGLE=m
+CONFIG_KS959_DONGLE=m
+CONFIG_USB_IRDA=m
+CONFIG_SIGMATEL_FIR=m
+CONFIG_MCS_FIR=m
+CONFIG_BT=m
+CONFIG_BT_6LOWPAN=m
+CONFIG_BT_RFCOMM=m
+CONFIG_BT_RFCOMM_TTY=y
+CONFIG_BT_BNEP=m
+CONFIG_BT_BNEP_MC_FILTER=y
+CONFIG_BT_BNEP_PROTO_FILTER=y
+CONFIG_BT_HIDP=m
+CONFIG_BT_HCIBTUSB=m
+CONFIG_BT_HCIBCM203X=m
+CONFIG_BT_HCIBPA10X=m
+CONFIG_BT_HCIBFUSB=m
+CONFIG_BT_HCIVHCI=m
+CONFIG_BT_MRVL=m
+CONFIG_BT_MRVL_SDIO=m
+CONFIG_BT_ATH3K=m
+CONFIG_BT_WILINK=m
+CONFIG_CFG80211_WEXT=y
+CONFIG_MAC80211=m
+CONFIG_MAC80211_MESH=y
+CONFIG_WIMAX=m
+CONFIG_RFKILL=m
+CONFIG_RFKILL_INPUT=y
+CONFIG_NET_9P=m
+CONFIG_NFC=m
+CONFIG_NFC_PN533=m
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_DMA_CMA=y
+CONFIG_CMA_SIZE_MBYTES=5
+CONFIG_ZRAM=m
+CONFIG_ZRAM_LZ4_COMPRESS=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_CRYPTOLOOP=m
+CONFIG_BLK_DEV_DRBD=m
+CONFIG_BLK_DEV_NBD=m
+CONFIG_BLK_DEV_RAM=y
+CONFIG_CDROM_PKTCDVD=m
+CONFIG_ATA_OVER_ETH=m
+CONFIG_EEPROM_AT24=m
+CONFIG_SCSI=y
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_ST=m
+CONFIG_CHR_DEV_OSST=m
+CONFIG_BLK_DEV_SR=m
+CONFIG_CHR_DEV_SG=m
+CONFIG_SCSI_ISCSI_ATTRS=y
+CONFIG_ISCSI_TCP=m
+CONFIG_ISCSI_BOOT_SYSFS=m
+CONFIG_MD=y
+CONFIG_MD_LINEAR=m
+CONFIG_MD_RAID0=m
+CONFIG_BLK_DEV_DM=m
+CONFIG_DM_CRYPT=m
+CONFIG_DM_SNAPSHOT=m
+CONFIG_DM_MIRROR=m
+CONFIG_DM_LOG_USERSPACE=m
+CONFIG_DM_RAID=m
+CONFIG_DM_ZERO=m
+CONFIG_DM_DELAY=m
+CONFIG_NETDEVICES=y
+CONFIG_BONDING=m
+CONFIG_DUMMY=m
+CONFIG_IFB=m
+CONFIG_MACVLAN=m
+CONFIG_NETCONSOLE=m
+CONFIG_TUN=m
+CONFIG_VETH=m
+CONFIG_ENC28J60=m
+CONFIG_MDIO_BITBANG=m
+CONFIG_PPP=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPP_FILTER=y
+CONFIG_PPP_MPPE=m
+CONFIG_PPP_MULTILINK=y
+CONFIG_PPPOATM=m
+CONFIG_PPPOE=m
+CONFIG_PPPOL2TP=m
+CONFIG_PPP_ASYNC=m
+CONFIG_PPP_SYNC_TTY=m
+CONFIG_SLIP=m
+CONFIG_SLIP_COMPRESSED=y
+CONFIG_SLIP_SMART=y
+CONFIG_USB_CATC=m
+CONFIG_USB_KAWETH=m
+CONFIG_USB_PEGASUS=m
+CONFIG_USB_RTL8150=m
+CONFIG_USB_RTL8152=m
+CONFIG_USB_USBNET=y
+CONFIG_USB_NET_AX8817X=m
+CONFIG_USB_NET_AX88179_178A=m
+CONFIG_USB_NET_CDCETHER=m
+CONFIG_USB_NET_CDC_EEM=m
+CONFIG_USB_NET_CDC_NCM=m
+CONFIG_USB_NET_HUAWEI_CDC_NCM=m
+CONFIG_USB_NET_CDC_MBIM=m
+CONFIG_USB_NET_DM9601=m
+CONFIG_USB_NET_SR9700=m
+CONFIG_USB_NET_SR9800=m
+CONFIG_USB_NET_SMSC75XX=m
+CONFIG_USB_NET_SMSC95XX=y
+CONFIG_USB_NET_GL620A=m
+CONFIG_USB_NET_NET1080=m
+CONFIG_USB_NET_PLUSB=m
+CONFIG_USB_NET_MCS7830=m
+CONFIG_USB_NET_CDC_SUBSET=m
+CONFIG_USB_ALI_M5632=y
+CONFIG_USB_AN2720=y
+CONFIG_USB_EPSON2888=y
+CONFIG_USB_KC2190=y
+CONFIG_USB_NET_ZAURUS=m
+CONFIG_USB_NET_CX82310_ETH=m
+CONFIG_USB_NET_KALMIA=m
+CONFIG_USB_NET_QMI_WWAN=m
+CONFIG_USB_HSO=m
+CONFIG_USB_NET_INT51X1=m
+CONFIG_USB_IPHETH=m
+CONFIG_USB_SIERRA_NET=m
+CONFIG_USB_VL600=m
+CONFIG_LIBERTAS_THINFIRM=m
+CONFIG_LIBERTAS_THINFIRM_USB=m
+CONFIG_AT76C50X_USB=m
+CONFIG_USB_ZD1201=m
+CONFIG_USB_NET_RNDIS_WLAN=m
+CONFIG_RTL8187=m
+CONFIG_MAC80211_HWSIM=m
+CONFIG_ATH_CARDS=m
+CONFIG_ATH9K=m
+CONFIG_ATH9K_HTC=m
+CONFIG_CARL9170=m
+CONFIG_ATH6KL=m
+CONFIG_ATH6KL_USB=m
+CONFIG_AR5523=m
+CONFIG_B43=m
+# CONFIG_B43_PHY_N is not set
+CONFIG_B43LEGACY=m
+CONFIG_BRCMFMAC=m
+CONFIG_BRCMFMAC_USB=y
+CONFIG_HOSTAP=m
+CONFIG_LIBERTAS=m
+CONFIG_LIBERTAS_USB=m
+CONFIG_LIBERTAS_SDIO=m
+CONFIG_P54_COMMON=m
+CONFIG_P54_USB=m
+CONFIG_RT2X00=m
+CONFIG_RT2500USB=m
+CONFIG_RT73USB=m
+CONFIG_RT2800USB=m
+CONFIG_RT2800USB_RT3573=y
+CONFIG_RT2800USB_RT53XX=y
+CONFIG_RT2800USB_RT55XX=y
+CONFIG_RT2800USB_UNKNOWN=y
+CONFIG_RTL8192CU=m
+CONFIG_ZD1211RW=m
+CONFIG_MWIFIEX=m
+CONFIG_MWIFIEX_SDIO=m
+CONFIG_WIMAX_I2400M_USB=m
+CONFIG_INPUT_POLLDEV=m
+# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
+CONFIG_INPUT_JOYDEV=m
+CONFIG_INPUT_EVDEV=m
+# CONFIG_KEYBOARD_ATKBD is not set
+CONFIG_KEYBOARD_GPIO=m
+# CONFIG_INPUT_MOUSE is not set
+CONFIG_INPUT_JOYSTICK=y
+CONFIG_JOYSTICK_IFORCE=m
+CONFIG_JOYSTICK_IFORCE_USB=y
+CONFIG_JOYSTICK_XPAD=m
+CONFIG_JOYSTICK_XPAD_FF=y
+CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_TOUCHSCREEN_ADS7846=m
+CONFIG_TOUCHSCREEN_EGALAX=m
+CONFIG_TOUCHSCREEN_USB_COMPOSITE=m
+CONFIG_TOUCHSCREEN_STMPE=m
+CONFIG_INPUT_MISC=y
+CONFIG_INPUT_AD714X=m
+CONFIG_INPUT_ATI_REMOTE2=m
+CONFIG_INPUT_KEYSPAN_REMOTE=m
+CONFIG_INPUT_POWERMATE=m
+CONFIG_INPUT_YEALINK=m
+CONFIG_INPUT_CM109=m
+CONFIG_INPUT_UINPUT=m
+CONFIG_INPUT_GPIO_ROTARY_ENCODER=m
+CONFIG_INPUT_ADXL34X=m
+CONFIG_INPUT_CMA3000=m
+CONFIG_SERIO=m
+CONFIG_SERIO_RAW=m
+CONFIG_GAMEPORT=m
+CONFIG_GAMEPORT_NS558=m
+CONFIG_GAMEPORT_L4=m
+CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVKMEM is not set
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_TTY_PRINTK=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_BCM2708=m
+CONFIG_RAW_DRIVER=y
+CONFIG_BRCM_CHAR_DRIVERS=y
+CONFIG_BCM_VC_CMA=y
+CONFIG_BCM_VC_SM=y
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=m
+CONFIG_I2C_MUX=m
+CONFIG_I2C_BCM2708=m
+CONFIG_SPI=y
+CONFIG_SPI_BCM2835=m
+CONFIG_SPI_BCM2708=m
+CONFIG_SPI_SPIDEV=y
+CONFIG_PPS=m
+CONFIG_PPS_CLIENT_LDISC=m
+CONFIG_PPS_CLIENT_GPIO=m
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_ARIZONA=m
+CONFIG_GPIO_STMPE=y
+CONFIG_W1=m
+CONFIG_W1_MASTER_DS2490=m
+CONFIG_W1_MASTER_DS2482=m
+CONFIG_W1_MASTER_DS1WM=m
+CONFIG_W1_MASTER_GPIO=m
+CONFIG_W1_SLAVE_THERM=m
+CONFIG_W1_SLAVE_SMEM=m
+CONFIG_W1_SLAVE_DS2408=m
+CONFIG_W1_SLAVE_DS2413=m
+CONFIG_W1_SLAVE_DS2406=m
+CONFIG_W1_SLAVE_DS2423=m
+CONFIG_W1_SLAVE_DS2431=m
+CONFIG_W1_SLAVE_DS2433=m
+CONFIG_W1_SLAVE_DS2760=m
+CONFIG_W1_SLAVE_DS2780=m
+CONFIG_W1_SLAVE_DS2781=m
+CONFIG_W1_SLAVE_DS28E04=m
+CONFIG_W1_SLAVE_BQ27000=m
+CONFIG_BATTERY_DS2760=m
+# CONFIG_HWMON is not set
+CONFIG_THERMAL=y
+CONFIG_THERMAL_BCM2835=y
+CONFIG_WATCHDOG=y
+CONFIG_BCM2708_WDT=m
+CONFIG_UCB1400_CORE=m
+CONFIG_MFD_STMPE=y
+CONFIG_STMPE_SPI=y
+CONFIG_MFD_ARIZONA_I2C=m
+CONFIG_MFD_ARIZONA_SPI=m
+CONFIG_MFD_WM5102=y
+CONFIG_MEDIA_SUPPORT=m
+CONFIG_MEDIA_CAMERA_SUPPORT=y
+CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
+CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
+CONFIG_MEDIA_RADIO_SUPPORT=y
+CONFIG_MEDIA_RC_SUPPORT=y
+CONFIG_MEDIA_CONTROLLER=y
+CONFIG_LIRC=m
+CONFIG_RC_DEVICES=y
+CONFIG_RC_ATI_REMOTE=m
+CONFIG_IR_IMON=m
+CONFIG_IR_MCEUSB=m
+CONFIG_IR_REDRAT3=m
+CONFIG_IR_STREAMZAP=m
+CONFIG_IR_IGUANA=m
+CONFIG_IR_TTUSBIR=m
+CONFIG_RC_LOOPBACK=m
+CONFIG_IR_GPIO_CIR=m
+CONFIG_MEDIA_USB_SUPPORT=y
+CONFIG_USB_VIDEO_CLASS=m
+CONFIG_USB_M5602=m
+CONFIG_USB_STV06XX=m
+CONFIG_USB_GL860=m
+CONFIG_USB_GSPCA_BENQ=m
+CONFIG_USB_GSPCA_CONEX=m
+CONFIG_USB_GSPCA_CPIA1=m
+CONFIG_USB_GSPCA_DTCS033=m
+CONFIG_USB_GSPCA_ETOMS=m
+CONFIG_USB_GSPCA_FINEPIX=m
+CONFIG_USB_GSPCA_JEILINJ=m
+CONFIG_USB_GSPCA_JL2005BCD=m
+CONFIG_USB_GSPCA_KINECT=m
+CONFIG_USB_GSPCA_KONICA=m
+CONFIG_USB_GSPCA_MARS=m
+CONFIG_USB_GSPCA_MR97310A=m
+CONFIG_USB_GSPCA_NW80X=m
+CONFIG_USB_GSPCA_OV519=m
+CONFIG_USB_GSPCA_OV534=m
+CONFIG_USB_GSPCA_OV534_9=m
+CONFIG_USB_GSPCA_PAC207=m
+CONFIG_USB_GSPCA_PAC7302=m
+CONFIG_USB_GSPCA_PAC7311=m
+CONFIG_USB_GSPCA_SE401=m
+CONFIG_USB_GSPCA_SN9C2028=m
+CONFIG_USB_GSPCA_SN9C20X=m
+CONFIG_USB_GSPCA_SONIXB=m
+CONFIG_USB_GSPCA_SONIXJ=m
+CONFIG_USB_GSPCA_SPCA500=m
+CONFIG_USB_GSPCA_SPCA501=m
+CONFIG_USB_GSPCA_SPCA505=m
+CONFIG_USB_GSPCA_SPCA506=m
+CONFIG_USB_GSPCA_SPCA508=m
+CONFIG_USB_GSPCA_SPCA561=m
+CONFIG_USB_GSPCA_SPCA1528=m
+CONFIG_USB_GSPCA_SQ905=m
+CONFIG_USB_GSPCA_SQ905C=m
+CONFIG_USB_GSPCA_SQ930X=m
+CONFIG_USB_GSPCA_STK014=m
+CONFIG_USB_GSPCA_STK1135=m
+CONFIG_USB_GSPCA_STV0680=m
+CONFIG_USB_GSPCA_SUNPLUS=m
+CONFIG_USB_GSPCA_T613=m
+CONFIG_USB_GSPCA_TOPRO=m
+CONFIG_USB_GSPCA_TV8532=m
+CONFIG_USB_GSPCA_VC032X=m
+CONFIG_USB_GSPCA_VICAM=m
+CONFIG_USB_GSPCA_XIRLINK_CIT=m
+CONFIG_USB_GSPCA_ZC3XX=m
+CONFIG_USB_PWC=m
+CONFIG_VIDEO_CPIA2=m
+CONFIG_USB_ZR364XX=m
+CONFIG_USB_STKWEBCAM=m
+CONFIG_USB_S2255=m
+CONFIG_VIDEO_USBTV=m
+CONFIG_VIDEO_PVRUSB2=m
+CONFIG_VIDEO_HDPVR=m
+CONFIG_VIDEO_TLG2300=m
+CONFIG_VIDEO_USBVISION=m
+CONFIG_VIDEO_STK1160_COMMON=m
+CONFIG_VIDEO_STK1160_AC97=y
+CONFIG_VIDEO_GO7007=m
+CONFIG_VIDEO_GO7007_USB=m
+CONFIG_VIDEO_GO7007_USB_S2250_BOARD=m
+CONFIG_VIDEO_AU0828=m
+CONFIG_VIDEO_AU0828_RC=y
+CONFIG_VIDEO_CX231XX=m
+CONFIG_VIDEO_CX231XX_ALSA=m
+CONFIG_VIDEO_CX231XX_DVB=m
+CONFIG_VIDEO_TM6000=m
+CONFIG_VIDEO_TM6000_ALSA=m
+CONFIG_VIDEO_TM6000_DVB=m
+CONFIG_DVB_USB=m
+CONFIG_DVB_USB_A800=m
+CONFIG_DVB_USB_DIBUSB_MB=m
+CONFIG_DVB_USB_DIBUSB_MB_FAULTY=y
+CONFIG_DVB_USB_DIBUSB_MC=m
+CONFIG_DVB_USB_DIB0700=m
+CONFIG_DVB_USB_UMT_010=m
+CONFIG_DVB_USB_CXUSB=m
+CONFIG_DVB_USB_M920X=m
+CONFIG_DVB_USB_DIGITV=m
+CONFIG_DVB_USB_VP7045=m
+CONFIG_DVB_USB_VP702X=m
+CONFIG_DVB_USB_GP8PSK=m
+CONFIG_DVB_USB_NOVA_T_USB2=m
+CONFIG_DVB_USB_TTUSB2=m
+CONFIG_DVB_USB_DTT200U=m
+CONFIG_DVB_USB_OPERA1=m
+CONFIG_DVB_USB_AF9005=m
+CONFIG_DVB_USB_AF9005_REMOTE=m
+CONFIG_DVB_USB_PCTV452E=m
+CONFIG_DVB_USB_DW2102=m
+CONFIG_DVB_USB_CINERGY_T2=m
+CONFIG_DVB_USB_DTV5100=m
+CONFIG_DVB_USB_FRIIO=m
+CONFIG_DVB_USB_AZ6027=m
+CONFIG_DVB_USB_TECHNISAT_USB2=m
+CONFIG_DVB_USB_V2=m
+CONFIG_DVB_USB_AF9015=m
+CONFIG_DVB_USB_AF9035=m
+CONFIG_DVB_USB_ANYSEE=m
+CONFIG_DVB_USB_AU6610=m
+CONFIG_DVB_USB_AZ6007=m
+CONFIG_DVB_USB_CE6230=m
+CONFIG_DVB_USB_EC168=m
+CONFIG_DVB_USB_GL861=m
+CONFIG_DVB_USB_LME2510=m
+CONFIG_DVB_USB_MXL111SF=m
+CONFIG_DVB_USB_RTL28XXU=m
+CONFIG_DVB_USB_DVBSKY=m
+CONFIG_SMS_USB_DRV=m
+CONFIG_DVB_B2C2_FLEXCOP_USB=m
+CONFIG_DVB_AS102=m
+CONFIG_VIDEO_EM28XX=m
+CONFIG_VIDEO_EM28XX_V4L2=m
+CONFIG_VIDEO_EM28XX_ALSA=m
+CONFIG_VIDEO_EM28XX_DVB=m
+CONFIG_V4L_PLATFORM_DRIVERS=y
+CONFIG_VIDEO_BCM2835=y
+CONFIG_VIDEO_BCM2835_MMAL=m
+CONFIG_RADIO_SI470X=y
+CONFIG_USB_SI470X=m
+CONFIG_I2C_SI470X=m
+CONFIG_RADIO_SI4713=m
+CONFIG_I2C_SI4713=m
+CONFIG_USB_MR800=m
+CONFIG_USB_DSBR=m
+CONFIG_RADIO_SHARK=m
+CONFIG_RADIO_SHARK2=m
+CONFIG_USB_KEENE=m
+CONFIG_USB_MA901=m
+CONFIG_RADIO_TEA5764=m
+CONFIG_RADIO_SAA7706H=m
+CONFIG_RADIO_TEF6862=m
+CONFIG_RADIO_WL1273=m
+CONFIG_RADIO_WL128X=m
+# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set
+CONFIG_VIDEO_UDA1342=m
+CONFIG_VIDEO_SONY_BTF_MPX=m
+CONFIG_VIDEO_TVP5150=m
+CONFIG_VIDEO_TW2804=m
+CONFIG_VIDEO_TW9903=m
+CONFIG_VIDEO_TW9906=m
+CONFIG_VIDEO_OV7640=m
+CONFIG_VIDEO_MT9V011=m
+CONFIG_FB=y
+CONFIG_FB_BCM2708=y
+CONFIG_FB_UDL=m
+# CONFIG_BACKLIGHT_GENERIC is not set
+CONFIG_BACKLIGHT_GPIO=m
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_LOGO=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+CONFIG_SOUND=y
+CONFIG_SND=m
+CONFIG_SND_SEQUENCER=m
+CONFIG_SND_SEQ_DUMMY=m
+CONFIG_SND_MIXER_OSS=m
+CONFIG_SND_PCM_OSS=m
+CONFIG_SND_SEQUENCER_OSS=y
+CONFIG_SND_HRTIMER=m
+CONFIG_SND_DUMMY=m
+CONFIG_SND_ALOOP=m
+CONFIG_SND_VIRMIDI=m
+CONFIG_SND_MTPAV=m
+CONFIG_SND_SERIAL_U16550=m
+CONFIG_SND_MPU401=m
+CONFIG_SND_BCM2835=m
+CONFIG_SND_USB_AUDIO=m
+CONFIG_SND_USB_UA101=m
+CONFIG_SND_USB_CAIAQ=m
+CONFIG_SND_USB_CAIAQ_INPUT=y
+CONFIG_SND_USB_6FIRE=m
+CONFIG_SND_SOC=m
+CONFIG_SND_BCM2708_SOC_I2S=m
+CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
+CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
+CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
+CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
+CONFIG_SND_BCM2708_SOC_RPI_DAC=m
+CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
+CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
+CONFIG_SND_SIMPLE_CARD=m
+CONFIG_SOUND_PRIME=m
+CONFIG_HIDRAW=y
+CONFIG_HID_A4TECH=m
+CONFIG_HID_ACRUX=m
+CONFIG_HID_APPLE=m
+CONFIG_HID_BELKIN=m
+CONFIG_HID_CHERRY=m
+CONFIG_HID_CHICONY=m
+CONFIG_HID_CYPRESS=m
+CONFIG_HID_DRAGONRISE=m
+CONFIG_HID_EMS_FF=m
+CONFIG_HID_ELECOM=m
+CONFIG_HID_ELO=m
+CONFIG_HID_EZKEY=m
+CONFIG_HID_HOLTEK=m
+CONFIG_HID_KEYTOUCH=m
+CONFIG_HID_KYE=m
+CONFIG_HID_UCLOGIC=m
+CONFIG_HID_WALTOP=m
+CONFIG_HID_GYRATION=m
+CONFIG_HID_TWINHAN=m
+CONFIG_HID_KENSINGTON=m
+CONFIG_HID_LCPOWER=m
+CONFIG_HID_LOGITECH=m
+CONFIG_HID_MAGICMOUSE=m
+CONFIG_HID_MICROSOFT=m
+CONFIG_HID_MONTEREY=m
+CONFIG_HID_MULTITOUCH=m
+CONFIG_HID_NTRIG=m
+CONFIG_HID_ORTEK=m
+CONFIG_HID_PANTHERLORD=m
+CONFIG_HID_PETALYNX=m
+CONFIG_HID_PICOLCD=m
+CONFIG_HID_ROCCAT=m
+CONFIG_HID_SAMSUNG=m
+CONFIG_HID_SONY=m
+CONFIG_HID_SPEEDLINK=m
+CONFIG_HID_SUNPLUS=m
+CONFIG_HID_GREENASIA=m
+CONFIG_HID_SMARTJOYPLUS=m
+CONFIG_HID_TOPSEED=m
+CONFIG_HID_THINGM=m
+CONFIG_HID_THRUSTMASTER=m
+CONFIG_HID_WACOM=m
+CONFIG_HID_WIIMOTE=m
+CONFIG_HID_XINMO=m
+CONFIG_HID_ZEROPLUS=m
+CONFIG_HID_ZYDACRON=m
+CONFIG_HID_PID=y
+CONFIG_USB_HIDDEV=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_MON=m
+CONFIG_USB_DWCOTG=y
+CONFIG_USB_PRINTER=m
+CONFIG_USB_STORAGE=y
+CONFIG_USB_STORAGE_REALTEK=m
+CONFIG_USB_STORAGE_DATAFAB=m
+CONFIG_USB_STORAGE_FREECOM=m
+CONFIG_USB_STORAGE_ISD200=m
+CONFIG_USB_STORAGE_USBAT=m
+CONFIG_USB_STORAGE_SDDR09=m
+CONFIG_USB_STORAGE_SDDR55=m
+CONFIG_USB_STORAGE_JUMPSHOT=m
+CONFIG_USB_STORAGE_ALAUDA=m
+CONFIG_USB_STORAGE_ONETOUCH=m
+CONFIG_USB_STORAGE_KARMA=m
+CONFIG_USB_STORAGE_CYPRESS_ATACB=m
+CONFIG_USB_STORAGE_ENE_UB6250=m
+CONFIG_USB_MDC800=m
+CONFIG_USB_MICROTEK=m
+CONFIG_USBIP_CORE=m
+CONFIG_USBIP_VHCI_HCD=m
+CONFIG_USBIP_HOST=m
+CONFIG_USB_SERIAL=m
+CONFIG_USB_SERIAL_GENERIC=y
+CONFIG_USB_SERIAL_AIRCABLE=m
+CONFIG_USB_SERIAL_ARK3116=m
+CONFIG_USB_SERIAL_BELKIN=m
+CONFIG_USB_SERIAL_CH341=m
+CONFIG_USB_SERIAL_WHITEHEAT=m
+CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
+CONFIG_USB_SERIAL_CP210X=m
+CONFIG_USB_SERIAL_CYPRESS_M8=m
+CONFIG_USB_SERIAL_EMPEG=m
+CONFIG_USB_SERIAL_FTDI_SIO=m
+CONFIG_USB_SERIAL_VISOR=m
+CONFIG_USB_SERIAL_IPAQ=m
+CONFIG_USB_SERIAL_IR=m
+CONFIG_USB_SERIAL_EDGEPORT=m
+CONFIG_USB_SERIAL_EDGEPORT_TI=m
+CONFIG_USB_SERIAL_F81232=m
+CONFIG_USB_SERIAL_GARMIN=m
+CONFIG_USB_SERIAL_IPW=m
+CONFIG_USB_SERIAL_IUU=m
+CONFIG_USB_SERIAL_KEYSPAN_PDA=m
+CONFIG_USB_SERIAL_KEYSPAN=m
+CONFIG_USB_SERIAL_KLSI=m
+CONFIG_USB_SERIAL_KOBIL_SCT=m
+CONFIG_USB_SERIAL_MCT_U232=m
+CONFIG_USB_SERIAL_METRO=m
+CONFIG_USB_SERIAL_MOS7720=m
+CONFIG_USB_SERIAL_MOS7840=m
+CONFIG_USB_SERIAL_NAVMAN=m
+CONFIG_USB_SERIAL_PL2303=m
+CONFIG_USB_SERIAL_OTI6858=m
+CONFIG_USB_SERIAL_QCAUX=m
+CONFIG_USB_SERIAL_QUALCOMM=m
+CONFIG_USB_SERIAL_SPCP8X5=m
+CONFIG_USB_SERIAL_SAFE=m
+CONFIG_USB_SERIAL_SIERRAWIRELESS=m
+CONFIG_USB_SERIAL_SYMBOL=m
+CONFIG_USB_SERIAL_TI=m
+CONFIG_USB_SERIAL_CYBERJACK=m
+CONFIG_USB_SERIAL_XIRCOM=m
+CONFIG_USB_SERIAL_OPTION=m
+CONFIG_USB_SERIAL_OMNINET=m
+CONFIG_USB_SERIAL_OPTICON=m
+CONFIG_USB_SERIAL_XSENS_MT=m
+CONFIG_USB_SERIAL_WISHBONE=m
+CONFIG_USB_SERIAL_SSU100=m
+CONFIG_USB_SERIAL_QT2=m
+CONFIG_USB_SERIAL_DEBUG=m
+CONFIG_USB_EMI62=m
+CONFIG_USB_EMI26=m
+CONFIG_USB_ADUTUX=m
+CONFIG_USB_SEVSEG=m
+CONFIG_USB_RIO500=m
+CONFIG_USB_LEGOTOWER=m
+CONFIG_USB_LCD=m
+CONFIG_USB_LED=m
+CONFIG_USB_CYPRESS_CY7C63=m
+CONFIG_USB_CYTHERM=m
+CONFIG_USB_IDMOUSE=m
+CONFIG_USB_FTDI_ELAN=m
+CONFIG_USB_APPLEDISPLAY=m
+CONFIG_USB_LD=m
+CONFIG_USB_TRANCEVIBRATOR=m
+CONFIG_USB_IOWARRIOR=m
+CONFIG_USB_TEST=m
+CONFIG_USB_ISIGHTFW=m
+CONFIG_USB_YUREX=m
+CONFIG_USB_ATM=m
+CONFIG_USB_SPEEDTOUCH=m
+CONFIG_USB_CXACRU=m
+CONFIG_USB_UEAGLEATM=m
+CONFIG_USB_XUSBATM=m
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK_MINORS=32
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MMC_BCM2835=y
+CONFIG_MMC_BCM2835_DMA=y
+CONFIG_MMC_SPI=m
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGER_TIMER=y
+CONFIG_LEDS_TRIGGER_ONESHOT=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_BACKLIGHT=y
+CONFIG_LEDS_TRIGGER_CPU=y
+CONFIG_LEDS_TRIGGER_GPIO=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
+CONFIG_LEDS_TRIGGER_TRANSIENT=m
+CONFIG_LEDS_TRIGGER_CAMERA=m
+CONFIG_LEDS_TRIGGER_INPUT=y
+CONFIG_RTC_CLASS=y
+# CONFIG_RTC_HCTOSYS is not set
+CONFIG_RTC_DRV_DS1307=m
+CONFIG_RTC_DRV_DS1374=m
+CONFIG_RTC_DRV_DS1672=m
+CONFIG_RTC_DRV_DS3232=m
+CONFIG_RTC_DRV_MAX6900=m
+CONFIG_RTC_DRV_RS5C372=m
+CONFIG_RTC_DRV_ISL1208=m
+CONFIG_RTC_DRV_ISL12022=m
+CONFIG_RTC_DRV_ISL12057=m
+CONFIG_RTC_DRV_X1205=m
+CONFIG_RTC_DRV_PCF2127=m
+CONFIG_RTC_DRV_PCF8523=m
+CONFIG_RTC_DRV_PCF8563=m
+CONFIG_RTC_DRV_PCF8583=m
+CONFIG_RTC_DRV_M41T80=m
+CONFIG_RTC_DRV_BQ32K=m
+CONFIG_RTC_DRV_S35390A=m
+CONFIG_RTC_DRV_FM3130=m
+CONFIG_RTC_DRV_RX8581=m
+CONFIG_RTC_DRV_RX8025=m
+CONFIG_RTC_DRV_EM3027=m
+CONFIG_RTC_DRV_RV3029C2=m
+CONFIG_RTC_DRV_M41T93=m
+CONFIG_RTC_DRV_M41T94=m
+CONFIG_RTC_DRV_DS1305=m
+CONFIG_RTC_DRV_DS1390=m
+CONFIG_RTC_DRV_MAX6902=m
+CONFIG_RTC_DRV_R9701=m
+CONFIG_RTC_DRV_RS5C348=m
+CONFIG_RTC_DRV_DS3234=m
+CONFIG_RTC_DRV_PCF2123=m
+CONFIG_RTC_DRV_RX4581=m
+CONFIG_DMADEVICES=y
+CONFIG_DMA_BCM2708=y
+CONFIG_UIO=m
+CONFIG_UIO_PDRV_GENIRQ=m
+CONFIG_STAGING=y
+CONFIG_PRISM2_USB=m
+CONFIG_R8712U=m
+CONFIG_R8188EU=m
+CONFIG_R8723AU=m
+CONFIG_VT6656=m
+CONFIG_SPEAKUP=m
+CONFIG_SPEAKUP_SYNTH_SOFT=m
+CONFIG_STAGING_MEDIA=y
+CONFIG_LIRC_STAGING=y
+CONFIG_LIRC_IGORPLUGUSB=m
+CONFIG_LIRC_IMON=m
+CONFIG_LIRC_RPI=m
+CONFIG_LIRC_SASEM=m
+CONFIG_LIRC_SERIAL=m
+CONFIG_FB_TFT=m
+CONFIG_FB_TFT_AGM1264K_FL=m
+CONFIG_FB_TFT_BD663474=m
+CONFIG_FB_TFT_HX8340BN=m
+CONFIG_FB_TFT_HX8347D=m
+CONFIG_FB_TFT_HX8353D=m
+CONFIG_FB_TFT_ILI9320=m
+CONFIG_FB_TFT_ILI9325=m
+CONFIG_FB_TFT_ILI9340=m
+CONFIG_FB_TFT_ILI9341=m
+CONFIG_FB_TFT_ILI9481=m
+CONFIG_FB_TFT_ILI9486=m
+CONFIG_FB_TFT_PCD8544=m
+CONFIG_FB_TFT_RA8875=m
+CONFIG_FB_TFT_S6D02A1=m
+CONFIG_FB_TFT_S6D1121=m
+CONFIG_FB_TFT_SSD1289=m
+CONFIG_FB_TFT_SSD1306=m
+CONFIG_FB_TFT_SSD1331=m
+CONFIG_FB_TFT_SSD1351=m
+CONFIG_FB_TFT_ST7735R=m
+CONFIG_FB_TFT_TINYLCD=m
+CONFIG_FB_TFT_TLS8204=m
+CONFIG_FB_TFT_UC1701=m
+CONFIG_FB_TFT_UPD161704=m
+CONFIG_FB_TFT_WATTEROTT=m
+CONFIG_FB_FLEX=m
+CONFIG_FB_TFT_FBTFT_DEVICE=m
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_EXTCON=m
+CONFIG_EXTCON_ARIZONA=m
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_REISERFS_FS=m
+CONFIG_REISERFS_FS_XATTR=y
+CONFIG_REISERFS_FS_POSIX_ACL=y
+CONFIG_REISERFS_FS_SECURITY=y
+CONFIG_JFS_FS=m
+CONFIG_JFS_POSIX_ACL=y
+CONFIG_JFS_SECURITY=y
+CONFIG_JFS_STATISTICS=y
+CONFIG_XFS_FS=m
+CONFIG_XFS_QUOTA=y
+CONFIG_XFS_POSIX_ACL=y
+CONFIG_XFS_RT=y
+CONFIG_GFS2_FS=m
+CONFIG_OCFS2_FS=m
+CONFIG_BTRFS_FS=m
+CONFIG_BTRFS_FS_POSIX_ACL=y
+CONFIG_NILFS2_FS=m
+CONFIG_FANOTIFY=y
+CONFIG_QFMT_V1=m
+CONFIG_QFMT_V2=m
+CONFIG_AUTOFS4_FS=y
+CONFIG_FUSE_FS=m
+CONFIG_CUSE=m
+CONFIG_FSCACHE=y
+CONFIG_FSCACHE_STATS=y
+CONFIG_FSCACHE_HISTOGRAM=y
+CONFIG_CACHEFILES=y
+CONFIG_ISO9660_FS=m
+CONFIG_JOLIET=y
+CONFIG_ZISOFS=y
+CONFIG_UDF_FS=m
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
+CONFIG_NTFS_FS=m
+CONFIG_NTFS_RW=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_CONFIGFS_FS=y
+CONFIG_ECRYPT_FS=m
+CONFIG_HFS_FS=m
+CONFIG_HFSPLUS_FS=m
+CONFIG_SQUASHFS=m
+CONFIG_SQUASHFS_XATTR=y
+CONFIG_SQUASHFS_LZO=y
+CONFIG_SQUASHFS_XZ=y
+CONFIG_F2FS_FS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_NFS_SWAP=y
+CONFIG_ROOT_NFS=y
+CONFIG_NFS_FSCACHE=y
+CONFIG_NFSD=m
+CONFIG_NFSD_V3_ACL=y
+CONFIG_NFSD_V4=y
+CONFIG_CIFS=m
+CONFIG_CIFS_WEAK_PW_HASH=y
+CONFIG_CIFS_XATTR=y
+CONFIG_CIFS_POSIX=y
+CONFIG_9P_FS=m
+CONFIG_9P_FS_POSIX_ACL=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_CODEPAGE_737=m
+CONFIG_NLS_CODEPAGE_775=m
+CONFIG_NLS_CODEPAGE_850=m
+CONFIG_NLS_CODEPAGE_852=m
+CONFIG_NLS_CODEPAGE_855=m
+CONFIG_NLS_CODEPAGE_857=m
+CONFIG_NLS_CODEPAGE_860=m
+CONFIG_NLS_CODEPAGE_861=m
+CONFIG_NLS_CODEPAGE_862=m
+CONFIG_NLS_CODEPAGE_863=m
+CONFIG_NLS_CODEPAGE_864=m
+CONFIG_NLS_CODEPAGE_865=m
+CONFIG_NLS_CODEPAGE_866=m
+CONFIG_NLS_CODEPAGE_869=m
+CONFIG_NLS_CODEPAGE_936=m
+CONFIG_NLS_CODEPAGE_950=m
+CONFIG_NLS_CODEPAGE_932=m
+CONFIG_NLS_CODEPAGE_949=m
+CONFIG_NLS_CODEPAGE_874=m
+CONFIG_NLS_ISO8859_8=m
+CONFIG_NLS_CODEPAGE_1250=m
+CONFIG_NLS_CODEPAGE_1251=m
+CONFIG_NLS_ASCII=y
+CONFIG_NLS_ISO8859_1=m
+CONFIG_NLS_ISO8859_2=m
+CONFIG_NLS_ISO8859_3=m
+CONFIG_NLS_ISO8859_4=m
+CONFIG_NLS_ISO8859_5=m
+CONFIG_NLS_ISO8859_6=m
+CONFIG_NLS_ISO8859_7=m
+CONFIG_NLS_ISO8859_9=m
+CONFIG_NLS_ISO8859_13=m
+CONFIG_NLS_ISO8859_14=m
+CONFIG_NLS_ISO8859_15=m
+CONFIG_NLS_KOI8_R=m
+CONFIG_NLS_KOI8_U=m
+CONFIG_DLM=m
+CONFIG_PRINTK_TIME=y
+CONFIG_BOOT_PRINTK_DELAY=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_TIMER_STATS=y
+# CONFIG_DEBUG_PREEMPT is not set
+CONFIG_LATENCYTOP=y
+CONFIG_IRQSOFF_TRACER=y
+CONFIG_SCHED_TRACER=y
+CONFIG_STACK_TRACER=y
+CONFIG_BLK_DEV_IO_TRACE=y
+# CONFIG_KPROBE_EVENT is not set
+CONFIG_FUNCTION_PROFILER=y
+CONFIG_KGDB=y
+CONFIG_KGDB_KDB=y
+CONFIG_KDB_KEYBOARD=y
+CONFIG_CRYPTO_USER=m
+CONFIG_CRYPTO_NULL=m
+CONFIG_CRYPTO_CRYPTD=m
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_CTS=m
+CONFIG_CRYPTO_XTS=m
+CONFIG_CRYPTO_XCBC=m
+CONFIG_CRYPTO_SHA1_ARM=m
+CONFIG_CRYPTO_SHA512=m
+CONFIG_CRYPTO_TGR192=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_AES_ARM=m
+CONFIG_CRYPTO_CAST5=m
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_HW is not set
+CONFIG_CRC_ITU_T=y
+CONFIG_LIBCRC32C=y
diff -Nur linux-3.18.10/arch/arm/include/asm/dma-mapping.h linux-rpi/arch/arm/include/asm/dma-mapping.h
--- linux-3.18.10/arch/arm/include/asm/dma-mapping.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/include/asm/dma-mapping.h	2015-03-26 11:46:41.748226564 +0100
@@ -58,37 +58,21 @@
 #ifndef __arch_pfn_to_dma
 static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
 {
-	if (dev)
-		pfn -= dev->dma_pfn_offset;
 	return (dma_addr_t)__pfn_to_bus(pfn);
 }
 
 static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
 {
-	unsigned long pfn = __bus_to_pfn(addr);
-
-	if (dev)
-		pfn += dev->dma_pfn_offset;
-
-	return pfn;
+	return __bus_to_pfn(addr);
 }
 
 static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
 {
-	if (dev) {
-		unsigned long pfn = dma_to_pfn(dev, addr);
-
-		return phys_to_virt(__pfn_to_phys(pfn));
-	}
-
 	return (void *)__bus_to_virt((unsigned long)addr);
 }
 
 static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
 {
-	if (dev)
-		return pfn_to_dma(dev, virt_to_pfn(addr));
-
 	return (dma_addr_t)__virt_to_bus((unsigned long)(addr));
 }
 
diff -Nur linux-3.18.10/arch/arm/include/asm/entry-macro-multi.S linux-rpi/arch/arm/include/asm/entry-macro-multi.S
--- linux-3.18.10/arch/arm/include/asm/entry-macro-multi.S	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/include/asm/entry-macro-multi.S	2015-03-26 11:46:41.748226564 +0100
@@ -1,5 +1,6 @@
 #include <asm/assembler.h>
 
+#ifndef CONFIG_ARCH_BCM2709
 /*
  * Interrupt handling.  Preserves r7, r8, r9
  */
@@ -28,6 +29,7 @@
 #endif
 9997:
 	.endm
+#endif
 
 	.macro	arch_irq_handler, symbol_name
 	.align	5
diff -Nur linux-3.18.10/arch/arm/include/asm/irqflags.h linux-rpi/arch/arm/include/asm/irqflags.h
--- linux-3.18.10/arch/arm/include/asm/irqflags.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/include/asm/irqflags.h	2015-03-26 11:46:41.748226564 +0100
@@ -145,12 +145,22 @@
 }
 
 /*
- * restore saved IRQ & FIQ state
+ * restore saved IRQ state
  */
 static inline void arch_local_irq_restore(unsigned long flags)
 {
-	asm volatile(
-		"	msr	" IRQMASK_REG_NAME_W ", %0	@ local_irq_restore"
+	unsigned long temp = 0;
+	flags &= ~(1 << 6);
+	asm volatile (
+		" mrs %0, cpsr"
+		: "=r" (temp)
+		:
+		: "memory", "cc");
+		/* Preserve FIQ bit */
+		temp &= (1 << 6);
+		flags = flags | temp;
+	asm volatile (
+		"    msr    cpsr_c, %0    @ local_irq_restore"
 		:
 		: "r" (flags)
 		: "memory", "cc");
diff -Nur linux-3.18.10/arch/arm/include/asm/string.h linux-rpi/arch/arm/include/asm/string.h
--- linux-3.18.10/arch/arm/include/asm/string.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/include/asm/string.h	2015-03-26 11:46:41.752226568 +0100
@@ -24,6 +24,11 @@
 #define __HAVE_ARCH_MEMSET
 extern void * memset(void *, int, __kernel_size_t);
 
+#ifdef CONFIG_MACH_BCM2708
+#define __HAVE_ARCH_MEMCMP
+extern int memcmp(const void *, const void *, size_t);
+#endif
+
 extern void __memzero(void *ptr, __kernel_size_t n);
 
 #define memset(p,v,n)							\
diff -Nur linux-3.18.10/arch/arm/include/asm/uaccess.h linux-rpi/arch/arm/include/asm/uaccess.h
--- linux-3.18.10/arch/arm/include/asm/uaccess.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/include/asm/uaccess.h	2015-03-26 11:46:41.752226568 +0100
@@ -475,6 +475,7 @@
 
 #ifdef CONFIG_MMU
 extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check __copy_from_user_std(void *to, const void __user *from, unsigned long n);
 extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
 extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n);
 extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
diff -Nur linux-3.18.10/arch/arm/Kconfig linux-rpi/arch/arm/Kconfig
--- linux-3.18.10/arch/arm/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/Kconfig	2015-03-26 11:46:41.692226515 +0100
@@ -381,6 +381,23 @@
 	  This enables support for systems based on Atmel
 	  AT91RM9200 and AT91SAM9* processors.
 
+config ARCH_BCM2708
+	bool "Broadcom BCM2708 family"
+	select CPU_V6
+	select ARM_AMBA
+	select HAVE_SCHED_CLOCK
+	select NEED_MACH_GPIO_H
+	select NEED_MACH_MEMORY_H
+	select COMMON_CLK
+	select ARCH_HAS_CPUFREQ
+	select GENERIC_CLOCKEVENTS
+	select ARM_ERRATA_411920
+	select MACH_BCM2708
+	select VC4
+	select FIQ
+	help
+	  This enables support for Broadcom BCM2708 boards.
+
 config ARCH_CLPS711X
 	bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
 	select ARCH_REQUIRE_GPIOLIB
@@ -786,6 +803,26 @@
 	help
 	  Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
 
+config ARCH_BCM2709
+	bool "Broadcom BCM2709 family"
+	select ARCH_HAS_BARRIERS if SMP
+	select CPU_V7
+	select HAVE_SMP
+	select ARM_AMBA
+	select MIGHT_HAVE_CACHE_L2X0
+	select HAVE_SCHED_CLOCK
+	select NEED_MACH_MEMORY_H
+	select NEED_MACH_IO_H
+	select COMMON_CLK
+	select ARCH_HAS_CPUFREQ
+	select GENERIC_CLOCKEVENTS
+	select MACH_BCM2709
+	select VC4
+	select FIQ
+#	select ZONE_DMA
+	help
+	  This enables support for Broadcom BCM2709 boards.
+
 endchoice
 
 menu "Multiple platform selection"
@@ -972,6 +1009,8 @@
 source "arch/arm/mach-vt8500/Kconfig"
 
 source "arch/arm/mach-w90x900/Kconfig"
+source "arch/arm/mach-bcm2708/Kconfig"
+source "arch/arm/mach-bcm2709/Kconfig"
 
 source "arch/arm/mach-zynq/Kconfig"
 
diff -Nur linux-3.18.10/arch/arm/Kconfig.debug linux-rpi/arch/arm/Kconfig.debug
--- linux-3.18.10/arch/arm/Kconfig.debug	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/Kconfig.debug	2015-03-26 11:46:41.692226515 +0100
@@ -985,6 +985,14 @@
 		  options; the platform specific options are deprecated
 		  and will be soon removed.
 
+	config DEBUG_BCM2708_UART0
+		bool "Broadcom BCM2708 UART0 (PL011)"
+		depends on MACH_BCM2708
+		help
+		  Say Y here if you want the debug print routines to direct
+		  their output to UART 0. The port must have been initialised
+		  by the boot-loader before use.
+
 endchoice
 
 config DEBUG_EXYNOS_UART
diff -Nur linux-3.18.10/arch/arm/kernel/fiqasm.S linux-rpi/arch/arm/kernel/fiqasm.S
--- linux-3.18.10/arch/arm/kernel/fiqasm.S	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/kernel/fiqasm.S	2015-03-26 11:46:41.756226573 +0100
@@ -47,3 +47,7 @@
 	mov	r0, r0		@ avoid hazard prior to ARMv4
 	ret	lr
 ENDPROC(__get_fiq_regs)
+
+ENTRY(__FIQ_Branch)
+	mov pc, r8
+ENDPROC(__FIQ_Branch)
diff -Nur linux-3.18.10/arch/arm/kernel/head.S linux-rpi/arch/arm/kernel/head.S
--- linux-3.18.10/arch/arm/kernel/head.S	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/kernel/head.S	2015-03-26 11:46:41.756226573 +0100
@@ -673,6 +673,14 @@
 	ldrcc	r7, [r4], #4	@ use branch for delay slot
 	bcc	1b
 	ret	lr
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
 #endif
 ENDPROC(__fixup_a_pv_table)
 
diff -Nur linux-3.18.10/arch/arm/kernel/process.c linux-rpi/arch/arm/kernel/process.c
--- linux-3.18.10/arch/arm/kernel/process.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/kernel/process.c	2015-03-26 11:46:41.760226578 +0100
@@ -166,6 +166,16 @@
 }
 #endif
 
+char bcm2708_reboot_mode = 'h';
+
+int __init reboot_setup(char *str)
+{
+	bcm2708_reboot_mode = str[0];
+	return 1;
+}
+
+__setup("reboot=", reboot_setup);
+
 /*
  * Called by kexec, immediately prior to machine_kexec().
  *
diff -Nur linux-3.18.10/arch/arm/lib/arm-mem.h linux-rpi/arch/arm/lib/arm-mem.h
--- linux-3.18.10/arch/arm/lib/arm-mem.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/lib/arm-mem.h	2015-03-26 11:46:41.760226578 +0100
@@ -0,0 +1,159 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+.macro myfunc fname
+ .func fname
+ .global fname
+fname:
+.endm
+
+.macro preload_leading_step1  backwards, ptr, base
+/* If the destination is already 16-byte aligned, then we need to preload
+ * between 0 and prefetch_distance (inclusive) cache lines ahead so there
+ * are no gaps when the inner loop starts.
+ */
+ .if backwards
+        sub     ptr, base, #1
+        bic     ptr, ptr, #31
+ .else
+        bic     ptr, base, #31
+ .endif
+ .set OFFSET, 0
+ .rept prefetch_distance+1
+        pld     [ptr, #OFFSET]
+  .if backwards
+   .set OFFSET, OFFSET-32
+  .else
+   .set OFFSET, OFFSET+32
+  .endif
+ .endr
+.endm
+
+.macro preload_leading_step2  backwards, ptr, base, leading_bytes, tmp
+/* However, if the destination is not 16-byte aligned, we may need to
+ * preload one more cache line than that. The question we need to ask is:
+ * are the leading bytes more than the amount by which the source
+ * pointer will be rounded down for preloading, and if so, by how many
+ * cache lines?
+ */
+ .if backwards
+/* Here we compare against how many bytes we are into the
+ * cache line, counting down from the highest such address.
+ * Effectively, we want to calculate
+ *     leading_bytes = dst&15
+ *     cacheline_offset = 31-((src-leading_bytes-1)&31)
+ *     extra_needed = leading_bytes - cacheline_offset
+ * and test if extra_needed is <= 0, or rearranging:
+ *     leading_bytes + (src-leading_bytes-1)&31 <= 31
+ */
+        mov     tmp, base, lsl #32-5
+        sbc     tmp, tmp, leading_bytes, lsl #32-5
+        adds    tmp, tmp, leading_bytes, lsl #32-5
+        bcc     61f
+        pld     [ptr, #-32*(prefetch_distance+1)]
+ .else
+/* Effectively, we want to calculate
+ *     leading_bytes = (-dst)&15
+ *     cacheline_offset = (src+leading_bytes)&31
+ *     extra_needed = leading_bytes - cacheline_offset
+ * and test if extra_needed is <= 0.
+ */
+        mov     tmp, base, lsl #32-5
+        add     tmp, tmp, leading_bytes, lsl #32-5
+        rsbs    tmp, tmp, leading_bytes, lsl #32-5
+        bls     61f
+        pld     [ptr, #32*(prefetch_distance+1)]
+ .endif
+61:
+.endm
+
+.macro preload_trailing  backwards, base, remain, tmp
+        /* We need either 0, 1 or 2 extra preloads */
+ .if backwards
+        rsb     tmp, base, #0
+        mov     tmp, tmp, lsl #32-5
+ .else
+        mov     tmp, base, lsl #32-5
+ .endif
+        adds    tmp, tmp, remain, lsl #32-5
+        adceqs  tmp, tmp, #0
+        /* The instruction above has two effects: ensures Z is only
+         * set if C was clear (so Z indicates that both shifted quantities
+         * were 0), and clears C if Z was set (so C indicates that the sum
+         * of the shifted quantities was greater and not equal to 32) */
+        beq     82f
+ .if backwards
+        sub     tmp, base, #1
+        bic     tmp, tmp, #31
+ .else
+        bic     tmp, base, #31
+ .endif
+        bcc     81f
+ .if backwards
+        pld     [tmp, #-32*(prefetch_distance+1)]
+81:
+        pld     [tmp, #-32*prefetch_distance]
+ .else
+        pld     [tmp, #32*(prefetch_distance+2)]
+81:
+        pld     [tmp, #32*(prefetch_distance+1)]
+ .endif
+82:
+.endm
+
+.macro preload_all    backwards, narrow_case, shift, base, remain, tmp0, tmp1
+ .if backwards
+        sub     tmp0, base, #1
+        bic     tmp0, tmp0, #31
+        pld     [tmp0]
+        sub     tmp1, base, remain, lsl #shift
+ .else
+        bic     tmp0, base, #31
+        pld     [tmp0]
+        add     tmp1, base, remain, lsl #shift
+        sub     tmp1, tmp1, #1
+ .endif
+        bic     tmp1, tmp1, #31
+        cmp     tmp1, tmp0
+        beq     92f
+ .if narrow_case
+        /* In this case, all the data fits in either 1 or 2 cache lines */
+        pld     [tmp1]
+ .else
+91:
+  .if backwards
+        sub     tmp0, tmp0, #32
+  .else
+        add     tmp0, tmp0, #32
+  .endif
+        cmp     tmp0, tmp1
+        pld     [tmp0]
+        bne     91b
+ .endif
+92:
+.endm
diff -Nur linux-3.18.10/arch/arm/lib/copy_from_user.S linux-rpi/arch/arm/lib/copy_from_user.S
--- linux-3.18.10/arch/arm/lib/copy_from_user.S	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/lib/copy_from_user.S	2015-03-26 11:46:41.764226581 +0100
@@ -84,11 +84,13 @@
 
 	.text
 
-ENTRY(__copy_from_user)
+ENTRY(__copy_from_user_std)
+WEAK(__copy_from_user)
 
 #include "copy_template.S"
 
 ENDPROC(__copy_from_user)
+ENDPROC(__copy_from_user_std)
 
 	.pushsection .fixup,"ax"
 	.align 0
diff -Nur linux-3.18.10/arch/arm/lib/exports_rpi.c linux-rpi/arch/arm/lib/exports_rpi.c
--- linux-3.18.10/arch/arm/lib/exports_rpi.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/lib/exports_rpi.c	2015-03-26 11:46:41.764226581 +0100
@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2014, Raspberry Pi (Trading) Ltd.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+EXPORT_SYMBOL(memcmp);
diff -Nur linux-3.18.10/arch/arm/lib/Makefile linux-rpi/arch/arm/lib/Makefile
--- linux-3.18.10/arch/arm/lib/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/lib/Makefile	2015-03-26 11:46:41.760226578 +0100
@@ -6,15 +6,24 @@
 
 lib-y		:= backtrace.o changebit.o csumipv6.o csumpartial.o   \
 		   csumpartialcopy.o csumpartialcopyuser.o clearbit.o \
-		   delay.o delay-loop.o findbit.o memchr.o memcpy.o   \
-		   memmove.o memset.o memzero.o setbit.o              \
-		   strchr.o strrchr.o                                 \
+		   delay.o delay-loop.o findbit.o memchr.o memzero.o  \
+		   setbit.o strchr.o strrchr.o                        \
 		   testchangebit.o testclearbit.o testsetbit.o        \
 		   ashldi3.o ashrdi3.o lshrdi3.o muldi3.o             \
 		   ucmpdi2.o lib1funcs.o div64.o                      \
 		   io-readsb.o io-writesb.o io-readsl.o io-writesl.o  \
 		   call_with_stack.o bswapsdi2.o
 
+# Choose optimised implementations for Raspberry Pi
+ifeq ($(CONFIG_MACH_BCM2708),y)
+  CFLAGS_uaccess_with_memcpy.o += -DCOPY_FROM_USER_THRESHOLD=1600
+  CFLAGS_uaccess_with_memcpy.o += -DCOPY_TO_USER_THRESHOLD=672
+  obj-$(CONFIG_MODULES) += exports_rpi.o
+  lib-y	+= memcpy_rpi.o memmove_rpi.o memset_rpi.o memcmp_rpi.o
+else
+  lib-y	+= memcpy.o memmove.o memset.o
+endif
+
 mmu-y	:= clear_user.o copy_page.o getuser.o putuser.o
 
 # the code in uaccess.S is not preemption safe and
diff -Nur linux-3.18.10/arch/arm/lib/memcmp_rpi.S linux-rpi/arch/arm/lib/memcmp_rpi.S
--- linux-3.18.10/arch/arm/lib/memcmp_rpi.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/lib/memcmp_rpi.S	2015-03-26 11:46:41.764226581 +0100
@@ -0,0 +1,285 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/linkage.h>
+#include "arm-mem.h"
+
+/* Prevent the stack from becoming executable */
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
+
+    .text
+    .arch armv6
+    .object_arch armv4
+    .arm
+    .altmacro
+    .p2align 2
+
+.macro memcmp_process_head  unaligned
+ .if unaligned
+        ldr     DAT0, [S_1], #4
+        ldr     DAT1, [S_1], #4
+        ldr     DAT2, [S_1], #4
+        ldr     DAT3, [S_1], #4
+ .else
+        ldmia   S_1!, {DAT0, DAT1, DAT2, DAT3}
+ .endif
+        ldmia   S_2!, {DAT4, DAT5, DAT6, DAT7}
+.endm
+
+.macro memcmp_process_tail
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        cmpeq   DAT2, DAT6
+        cmpeq   DAT3, DAT7
+        bne     200f
+.endm
+
+.macro memcmp_leading_31bytes
+        movs    DAT0, OFF, lsl #31
+        ldrmib  DAT0, [S_1], #1
+        ldrcsh  DAT1, [S_1], #2
+        ldrmib  DAT4, [S_2], #1
+        ldrcsh  DAT5, [S_2], #2
+        movpl   DAT0, #0
+        movcc   DAT1, #0
+        movpl   DAT4, #0
+        movcc   DAT5, #0
+        submi   N, N, #1
+        subcs   N, N, #2
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        bne     200f
+        movs    DAT0, OFF, lsl #29
+        ldrmi   DAT0, [S_1], #4
+        ldrcs   DAT1, [S_1], #4
+        ldrcs   DAT2, [S_1], #4
+        ldrmi   DAT4, [S_2], #4
+        ldmcsia S_2!, {DAT5, DAT6}
+        movpl   DAT0, #0
+        movcc   DAT1, #0
+        movcc   DAT2, #0
+        movpl   DAT4, #0
+        movcc   DAT5, #0
+        movcc   DAT6, #0
+        submi   N, N, #4
+        subcs   N, N, #8
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        cmpeq   DAT2, DAT6
+        bne     200f
+        tst     OFF, #16
+        beq     105f
+        memcmp_process_head  1
+        sub     N, N, #16
+        memcmp_process_tail
+105:
+.endm
+
+.macro memcmp_trailing_15bytes  unaligned
+        movs    N, N, lsl #29
+ .if unaligned
+        ldrcs   DAT0, [S_1], #4
+        ldrcs   DAT1, [S_1], #4
+ .else
+        ldmcsia S_1!, {DAT0, DAT1}
+ .endif
+        ldrmi   DAT2, [S_1], #4
+        ldmcsia S_2!, {DAT4, DAT5}
+        ldrmi   DAT6, [S_2], #4
+        movcc   DAT0, #0
+        movcc   DAT1, #0
+        movpl   DAT2, #0
+        movcc   DAT4, #0
+        movcc   DAT5, #0
+        movpl   DAT6, #0
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        cmpeq   DAT2, DAT6
+        bne     200f
+        movs    N, N, lsl #2
+        ldrcsh  DAT0, [S_1], #2
+        ldrmib  DAT1, [S_1]
+        ldrcsh  DAT4, [S_2], #2
+        ldrmib  DAT5, [S_2]
+        movcc   DAT0, #0
+        movpl   DAT1, #0
+        movcc   DAT4, #0
+        movpl   DAT5, #0
+        cmp     DAT0, DAT4
+        cmpeq   DAT1, DAT5
+        bne     200f
+.endm
+
+.macro memcmp_long_inner_loop  unaligned
+110:
+        memcmp_process_head  unaligned
+        pld     [S_2, #prefetch_distance*32 + 16]
+        memcmp_process_tail
+        memcmp_process_head  unaligned
+        pld     [S_1, OFF]
+        memcmp_process_tail
+        subs    N, N, #32
+        bhs     110b
+        /* Just before the final (prefetch_distance+1) 32-byte blocks,
+         * deal with final preloads */
+        preload_trailing  0, S_1, N, DAT0
+        preload_trailing  0, S_2, N, DAT0
+        add     N, N, #(prefetch_distance+2)*32 - 16
+120:
+        memcmp_process_head  unaligned
+        memcmp_process_tail
+        subs    N, N, #16
+        bhs     120b
+        /* Trailing words and bytes */
+        tst     N, #15
+        beq     199f
+        memcmp_trailing_15bytes  unaligned
+199:    /* Reached end without detecting a difference */
+        mov     a1, #0
+        setend  le
+        pop     {DAT1-DAT6, pc}
+.endm
+
+.macro memcmp_short_inner_loop  unaligned
+        subs    N, N, #16     /* simplifies inner loop termination */
+        blo     122f
+120:
+        memcmp_process_head  unaligned
+        memcmp_process_tail
+        subs    N, N, #16
+        bhs     120b
+122:    /* Trailing words and bytes */
+        tst     N, #15
+        beq     199f
+        memcmp_trailing_15bytes  unaligned
+199:    /* Reached end without detecting a difference */
+        mov     a1, #0
+        setend  le
+        pop     {DAT1-DAT6, pc}
+.endm
+
+/*
+ * int memcmp(const void *s1, const void *s2, size_t n);
+ * On entry:
+ * a1 = pointer to buffer 1
+ * a2 = pointer to buffer 2
+ * a3 = number of bytes to compare (as unsigned chars)
+ * On exit:
+ * a1 = >0/=0/<0 if s1 >/=/< s2
+ */
+
+.set prefetch_distance, 2
+
+ENTRY(memcmp)
+        S_1     .req    a1
+        S_2     .req    a2
+        N       .req    a3
+        DAT0    .req    a4
+        DAT1    .req    v1
+        DAT2    .req    v2
+        DAT3    .req    v3
+        DAT4    .req    v4
+        DAT5    .req    v5
+        DAT6    .req    v6
+        DAT7    .req    ip
+        OFF     .req    lr
+
+        push    {DAT1-DAT6, lr}
+        setend  be /* lowest-addressed bytes are most significant */
+
+        /* To preload ahead as we go, we need at least (prefetch_distance+2) 32-byte blocks */
+        cmp     N, #(prefetch_distance+3)*32 - 1
+        blo     170f
+
+        /* Long case */
+        /* Adjust N so that the decrement instruction can also test for
+         * inner loop termination. We want it to stop when there are
+         * (prefetch_distance+1) complete blocks to go. */
+        sub     N, N, #(prefetch_distance+2)*32
+        preload_leading_step1  0, DAT0, S_1
+        preload_leading_step1  0, DAT1, S_2
+        tst     S_2, #31
+        beq     154f
+        rsb     OFF, S_2, #0 /* no need to AND with 15 here */
+        preload_leading_step2  0, DAT0, S_1, OFF, DAT2
+        preload_leading_step2  0, DAT1, S_2, OFF, DAT2
+        memcmp_leading_31bytes
+154:    /* Second source now cacheline (32-byte) aligned; we have at
+         * least one prefetch to go. */
+        /* Prefetch offset is best selected such that it lies in the
+         * first 8 of each 32 bytes - but it's just as easy to aim for
+         * the first one */
+        and     OFF, S_1, #31
+        rsb     OFF, OFF, #32*prefetch_distance
+        tst     S_1, #3
+        bne     140f
+        memcmp_long_inner_loop  0
+140:    memcmp_long_inner_loop  1
+
+170:    /* Short case */
+        teq     N, #0
+        beq     199f
+        preload_all 0, 0, 0, S_1, N, DAT0, DAT1
+        preload_all 0, 0, 0, S_2, N, DAT0, DAT1
+        tst     S_2, #3
+        beq     174f
+172:    subs    N, N, #1
+        blo     199f
+        ldrb    DAT0, [S_1], #1
+        ldrb    DAT4, [S_2], #1
+        cmp     DAT0, DAT4
+        bne     200f
+        tst     S_2, #3
+        bne     172b
+174:    /* Second source now 4-byte aligned; we have 0 or more bytes to go */
+        tst     S_1, #3
+        bne     140f
+        memcmp_short_inner_loop  0
+140:    memcmp_short_inner_loop  1
+
+200:    /* Difference found: determine sign. */
+        movhi   a1, #1
+        movlo   a1, #-1
+        setend  le
+        pop     {DAT1-DAT6, pc}
+
+        .unreq  S_1
+        .unreq  S_2
+        .unreq  N
+        .unreq  DAT0
+        .unreq  DAT1
+        .unreq  DAT2
+        .unreq  DAT3
+        .unreq  DAT4
+        .unreq  DAT5
+        .unreq  DAT6
+        .unreq  DAT7
+        .unreq  OFF
+ENDPROC(memcmp)
diff -Nur linux-3.18.10/arch/arm/lib/memcpymove.h linux-rpi/arch/arm/lib/memcpymove.h
--- linux-3.18.10/arch/arm/lib/memcpymove.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/lib/memcpymove.h	2015-03-26 11:46:41.764226581 +0100
@@ -0,0 +1,506 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+.macro unaligned_words  backwards, align, use_pld, words, r0, r1, r2, r3, r4, r5, r6, r7, r8
+ .if words == 1
+  .if backwards
+        mov     r1, r0, lsl #32-align*8
+        ldr     r0, [S, #-4]!
+        orr     r1, r1, r0, lsr #align*8
+        str     r1, [D, #-4]!
+  .else
+        mov     r0, r1, lsr #align*8
+        ldr     r1, [S, #4]!
+        orr     r0, r0, r1, lsl #32-align*8
+        str     r0, [D], #4
+  .endif
+ .elseif words == 2
+  .if backwards
+        ldr     r1, [S, #-4]!
+        mov     r2, r0, lsl #32-align*8
+        ldr     r0, [S, #-4]!
+        orr     r2, r2, r1, lsr #align*8
+        mov     r1, r1, lsl #32-align*8
+        orr     r1, r1, r0, lsr #align*8
+        stmdb   D!, {r1, r2}
+  .else
+        ldr     r1, [S, #4]!
+        mov     r0, r2, lsr #align*8
+        ldr     r2, [S, #4]!
+        orr     r0, r0, r1, lsl #32-align*8
+        mov     r1, r1, lsr #align*8
+        orr     r1, r1, r2, lsl #32-align*8
+        stmia   D!, {r0, r1}
+  .endif
+ .elseif words == 4
+  .if backwards
+        ldmdb   S!, {r2, r3}
+        mov     r4, r0, lsl #32-align*8
+        ldmdb   S!, {r0, r1}
+        orr     r4, r4, r3, lsr #align*8
+        mov     r3, r3, lsl #32-align*8
+        orr     r3, r3, r2, lsr #align*8
+        mov     r2, r2, lsl #32-align*8
+        orr     r2, r2, r1, lsr #align*8
+        mov     r1, r1, lsl #32-align*8
+        orr     r1, r1, r0, lsr #align*8
+        stmdb   D!, {r1, r2, r3, r4}
+  .else
+        ldmib   S!, {r1, r2}
+        mov     r0, r4, lsr #align*8
+        ldmib   S!, {r3, r4}
+        orr     r0, r0, r1, lsl #32-align*8
+        mov     r1, r1, lsr #align*8
+        orr     r1, r1, r2, lsl #32-align*8
+        mov     r2, r2, lsr #align*8
+        orr     r2, r2, r3, lsl #32-align*8
+        mov     r3, r3, lsr #align*8
+        orr     r3, r3, r4, lsl #32-align*8
+        stmia   D!, {r0, r1, r2, r3}
+  .endif
+ .elseif words == 8
+  .if backwards
+        ldmdb   S!, {r4, r5, r6, r7}
+        mov     r8, r0, lsl #32-align*8
+        ldmdb   S!, {r0, r1, r2, r3}
+   .if use_pld
+        pld     [S, OFF]
+   .endif
+        orr     r8, r8, r7, lsr #align*8
+        mov     r7, r7, lsl #32-align*8
+        orr     r7, r7, r6, lsr #align*8
+        mov     r6, r6, lsl #32-align*8
+        orr     r6, r6, r5, lsr #align*8
+        mov     r5, r5, lsl #32-align*8
+        orr     r5, r5, r4, lsr #align*8
+        mov     r4, r4, lsl #32-align*8
+        orr     r4, r4, r3, lsr #align*8
+        mov     r3, r3, lsl #32-align*8
+        orr     r3, r3, r2, lsr #align*8
+        mov     r2, r2, lsl #32-align*8
+        orr     r2, r2, r1, lsr #align*8
+        mov     r1, r1, lsl #32-align*8
+        orr     r1, r1, r0, lsr #align*8
+        stmdb   D!, {r5, r6, r7, r8}
+        stmdb   D!, {r1, r2, r3, r4}
+  .else
+        ldmib   S!, {r1, r2, r3, r4}
+        mov     r0, r8, lsr #align*8
+        ldmib   S!, {r5, r6, r7, r8}
+   .if use_pld
+        pld     [S, OFF]
+   .endif
+        orr     r0, r0, r1, lsl #32-align*8
+        mov     r1, r1, lsr #align*8
+        orr     r1, r1, r2, lsl #32-align*8
+        mov     r2, r2, lsr #align*8
+        orr     r2, r2, r3, lsl #32-align*8
+        mov     r3, r3, lsr #align*8
+        orr     r3, r3, r4, lsl #32-align*8
+        mov     r4, r4, lsr #align*8
+        orr     r4, r4, r5, lsl #32-align*8
+        mov     r5, r5, lsr #align*8
+        orr     r5, r5, r6, lsl #32-align*8
+        mov     r6, r6, lsr #align*8
+        orr     r6, r6, r7, lsl #32-align*8
+        mov     r7, r7, lsr #align*8
+        orr     r7, r7, r8, lsl #32-align*8
+        stmia   D!, {r0, r1, r2, r3}
+        stmia   D!, {r4, r5, r6, r7}
+  .endif
+ .endif
+.endm
+
+.macro memcpy_leading_15bytes  backwards, align
+        movs    DAT1, DAT2, lsl #31
+        sub     N, N, DAT2
+ .if backwards
+        ldrmib  DAT0, [S, #-1]!
+        ldrcsh  DAT1, [S, #-2]!
+        strmib  DAT0, [D, #-1]!
+        strcsh  DAT1, [D, #-2]!
+ .else
+        ldrmib  DAT0, [S], #1
+        ldrcsh  DAT1, [S], #2
+        strmib  DAT0, [D], #1
+        strcsh  DAT1, [D], #2
+ .endif
+        movs    DAT1, DAT2, lsl #29
+ .if backwards
+        ldrmi   DAT0, [S, #-4]!
+  .if align == 0
+        ldmcsdb S!, {DAT1, DAT2}
+  .else
+        ldrcs   DAT2, [S, #-4]!
+        ldrcs   DAT1, [S, #-4]!
+  .endif
+        strmi   DAT0, [D, #-4]!
+        stmcsdb D!, {DAT1, DAT2}
+ .else
+        ldrmi   DAT0, [S], #4
+  .if align == 0
+        ldmcsia S!, {DAT1, DAT2}
+  .else
+        ldrcs   DAT1, [S], #4
+        ldrcs   DAT2, [S], #4
+  .endif
+        strmi   DAT0, [D], #4
+        stmcsia D!, {DAT1, DAT2}
+ .endif
+.endm
+
+.macro memcpy_trailing_15bytes  backwards, align
+        movs    N, N, lsl #29
+ .if backwards
+  .if align == 0
+        ldmcsdb S!, {DAT0, DAT1}
+  .else
+        ldrcs   DAT1, [S, #-4]!
+        ldrcs   DAT0, [S, #-4]!
+  .endif
+        ldrmi   DAT2, [S, #-4]!
+        stmcsdb D!, {DAT0, DAT1}
+        strmi   DAT2, [D, #-4]!
+ .else
+  .if align == 0
+        ldmcsia S!, {DAT0, DAT1}
+  .else
+        ldrcs   DAT0, [S], #4
+        ldrcs   DAT1, [S], #4
+  .endif
+        ldrmi   DAT2, [S], #4
+        stmcsia D!, {DAT0, DAT1}
+        strmi   DAT2, [D], #4
+ .endif
+        movs    N, N, lsl #2
+ .if backwards
+        ldrcsh  DAT0, [S, #-2]!
+        ldrmib  DAT1, [S, #-1]
+        strcsh  DAT0, [D, #-2]!
+        strmib  DAT1, [D, #-1]
+ .else
+        ldrcsh  DAT0, [S], #2
+        ldrmib  DAT1, [S]
+        strcsh  DAT0, [D], #2
+        strmib  DAT1, [D]
+ .endif
+.endm
+
+.macro memcpy_long_inner_loop  backwards, align
+ .if align != 0
+  .if backwards
+        ldr     DAT0, [S, #-align]!
+  .else
+        ldr     LAST, [S, #-align]!
+  .endif
+ .endif
+110:
+ .if align == 0
+  .if backwards
+        ldmdb   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
+        pld     [S, OFF]
+        stmdb   D!, {DAT4, DAT5, DAT6, LAST}
+        stmdb   D!, {DAT0, DAT1, DAT2, DAT3}
+  .else
+        ldmia   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
+        pld     [S, OFF]
+        stmia   D!, {DAT0, DAT1, DAT2, DAT3}
+        stmia   D!, {DAT4, DAT5, DAT6, LAST}
+  .endif
+ .else
+        unaligned_words  backwards, align, 1, 8, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7, LAST
+ .endif
+        subs    N, N, #32
+        bhs     110b
+        /* Just before the final (prefetch_distance+1) 32-byte blocks, deal with final preloads */
+        preload_trailing  backwards, S, N, OFF
+        add     N, N, #(prefetch_distance+2)*32 - 32
+120:
+ .if align == 0
+  .if backwards
+        ldmdb   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
+        stmdb   D!, {DAT4, DAT5, DAT6, LAST}
+        stmdb   D!, {DAT0, DAT1, DAT2, DAT3}
+  .else
+        ldmia   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
+        stmia   D!, {DAT0, DAT1, DAT2, DAT3}
+        stmia   D!, {DAT4, DAT5, DAT6, LAST}
+  .endif
+ .else
+        unaligned_words  backwards, align, 0, 8, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7, LAST
+ .endif
+        subs    N, N, #32
+        bhs     120b
+        tst     N, #16
+ .if align == 0
+  .if backwards
+        ldmnedb S!, {DAT0, DAT1, DAT2, LAST}
+        stmnedb D!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldmneia S!, {DAT0, DAT1, DAT2, LAST}
+        stmneia D!, {DAT0, DAT1, DAT2, LAST}
+  .endif
+ .else
+        beq     130f
+        unaligned_words  backwards, align, 0, 4, DAT0, DAT1, DAT2, DAT3, LAST
+130:
+ .endif
+        /* Trailing words and bytes */
+        tst      N, #15
+        beq      199f
+ .if align != 0
+        add     S, S, #align
+ .endif
+        memcpy_trailing_15bytes  backwards, align
+199:
+        pop     {DAT3, DAT4, DAT5, DAT6, DAT7}
+        pop     {D, DAT1, DAT2, pc}
+.endm
+
+.macro memcpy_medium_inner_loop  backwards, align
+120:
+ .if backwards
+  .if align == 0
+        ldmdb   S!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldr     LAST, [S, #-4]!
+        ldr     DAT2, [S, #-4]!
+        ldr     DAT1, [S, #-4]!
+        ldr     DAT0, [S, #-4]!
+  .endif
+        stmdb   D!, {DAT0, DAT1, DAT2, LAST}
+ .else
+  .if align == 0
+        ldmia   S!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldr     DAT0, [S], #4
+        ldr     DAT1, [S], #4
+        ldr     DAT2, [S], #4
+        ldr     LAST, [S], #4
+  .endif
+        stmia   D!, {DAT0, DAT1, DAT2, LAST}
+ .endif
+        subs     N, N, #16
+        bhs      120b
+        /* Trailing words and bytes */
+        tst      N, #15
+        beq      199f
+        memcpy_trailing_15bytes  backwards, align
+199:
+        pop     {D, DAT1, DAT2, pc}
+.endm
+
+.macro memcpy_short_inner_loop  backwards, align
+        tst     N, #16
+ .if backwards
+  .if align == 0
+        ldmnedb S!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldrne   LAST, [S, #-4]!
+        ldrne   DAT2, [S, #-4]!
+        ldrne   DAT1, [S, #-4]!
+        ldrne   DAT0, [S, #-4]!
+  .endif
+        stmnedb D!, {DAT0, DAT1, DAT2, LAST}
+ .else
+  .if align == 0
+        ldmneia S!, {DAT0, DAT1, DAT2, LAST}
+  .else
+        ldrne   DAT0, [S], #4
+        ldrne   DAT1, [S], #4
+        ldrne   DAT2, [S], #4
+        ldrne   LAST, [S], #4
+  .endif
+        stmneia D!, {DAT0, DAT1, DAT2, LAST}
+ .endif
+        memcpy_trailing_15bytes  backwards, align
+199:
+        pop     {D, DAT1, DAT2, pc}
+.endm
+
+.macro memcpy backwards
+        D       .req    a1
+        S       .req    a2
+        N       .req    a3
+        DAT0    .req    a4
+        DAT1    .req    v1
+        DAT2    .req    v2
+        DAT3    .req    v3
+        DAT4    .req    v4
+        DAT5    .req    v5
+        DAT6    .req    v6
+        DAT7    .req    sl
+        LAST    .req    ip
+        OFF     .req    lr
+
+        .cfi_startproc
+
+        push    {D, DAT1, DAT2, lr}
+
+        .cfi_def_cfa_offset 16
+        .cfi_rel_offset D, 0
+        .cfi_undefined  S
+        .cfi_undefined  N
+        .cfi_undefined  DAT0
+        .cfi_rel_offset DAT1, 4
+        .cfi_rel_offset DAT2, 8
+        .cfi_undefined  LAST
+        .cfi_rel_offset lr, 12
+
+ .if backwards
+        add     D, D, N
+        add     S, S, N
+ .endif
+
+        /* See if we're guaranteed to have at least one 16-byte aligned 16-byte write */
+        cmp     N, #31
+        blo     170f
+        /* To preload ahead as we go, we need at least (prefetch_distance+2) 32-byte blocks */
+        cmp     N, #(prefetch_distance+3)*32 - 1
+        blo     160f
+
+        /* Long case */
+        push    {DAT3, DAT4, DAT5, DAT6, DAT7}
+
+        .cfi_def_cfa_offset 36
+        .cfi_rel_offset D, 20
+        .cfi_rel_offset DAT1, 24
+        .cfi_rel_offset DAT2, 28
+        .cfi_rel_offset DAT3, 0
+        .cfi_rel_offset DAT4, 4
+        .cfi_rel_offset DAT5, 8
+        .cfi_rel_offset DAT6, 12
+        .cfi_rel_offset DAT7, 16
+        .cfi_rel_offset lr, 32
+
+        /* Adjust N so that the decrement instruction can also test for
+         * inner loop termination. We want it to stop when there are
+         * (prefetch_distance+1) complete blocks to go. */
+        sub     N, N, #(prefetch_distance+2)*32
+        preload_leading_step1  backwards, DAT0, S
+ .if backwards
+        /* Bug in GAS: it accepts, but mis-assembles the instruction
+         * ands    DAT2, D, #60, 2
+         * which sets DAT2 to the number of leading bytes until destination is aligned and also clears C (sets borrow)
+         */
+        .word   0xE210513C
+        beq     154f
+ .else
+        ands    DAT2, D, #15
+        beq     154f
+        rsb     DAT2, DAT2, #16 /* number of leading bytes until destination aligned */
+ .endif
+        preload_leading_step2  backwards, DAT0, S, DAT2, OFF
+        memcpy_leading_15bytes backwards, 1
+154:    /* Destination now 16-byte aligned; we have at least one prefetch as well as at least one 16-byte output block */
+        /* Prefetch offset is best selected such that it lies in the first 8 of each 32 bytes - but it's just as easy to aim for the first one */
+ .if backwards
+        rsb     OFF, S, #3
+        and     OFF, OFF, #28
+        sub     OFF, OFF, #32*(prefetch_distance+1)
+ .else
+        and     OFF, S, #28
+        rsb     OFF, OFF, #32*prefetch_distance
+ .endif
+        movs    DAT0, S, lsl #31
+        bhi     157f
+        bcs     156f
+        bmi     155f
+        memcpy_long_inner_loop  backwards, 0
+155:    memcpy_long_inner_loop  backwards, 1
+156:    memcpy_long_inner_loop  backwards, 2
+157:    memcpy_long_inner_loop  backwards, 3
+
+        .cfi_def_cfa_offset 16
+        .cfi_rel_offset D, 0
+        .cfi_rel_offset DAT1, 4
+        .cfi_rel_offset DAT2, 8
+        .cfi_same_value DAT3
+        .cfi_same_value DAT4
+        .cfi_same_value DAT5
+        .cfi_same_value DAT6
+        .cfi_same_value DAT7
+        .cfi_rel_offset lr, 12
+
+160:    /* Medium case */
+        preload_all  backwards, 0, 0, S, N, DAT2, OFF
+        sub     N, N, #16     /* simplifies inner loop termination */
+ .if backwards
+        ands    DAT2, D, #15
+        beq     164f
+ .else
+        ands    DAT2, D, #15
+        beq     164f
+        rsb     DAT2, DAT2, #16
+ .endif
+        memcpy_leading_15bytes backwards, align
+164:    /* Destination now 16-byte aligned; we have at least one 16-byte output block */
+        tst     S, #3
+        bne     140f
+        memcpy_medium_inner_loop  backwards, 0
+140:    memcpy_medium_inner_loop  backwards, 1
+
+170:    /* Short case, less than 31 bytes, so no guarantee of at least one 16-byte block */
+        teq     N, #0
+        beq     199f
+        preload_all  backwards, 1, 0, S, N, DAT2, LAST
+        tst     D, #3
+        beq     174f
+172:    subs    N, N, #1
+        blo     199f
+ .if backwards
+        ldrb    DAT0, [S, #-1]!
+        strb    DAT0, [D, #-1]!
+ .else
+        ldrb    DAT0, [S], #1
+        strb    DAT0, [D], #1
+ .endif
+        tst     D, #3
+        bne     172b
+174:    /* Destination now 4-byte aligned; we have 0 or more output bytes to go */
+        tst     S, #3
+        bne     140f
+        memcpy_short_inner_loop  backwards, 0
+140:    memcpy_short_inner_loop  backwards, 1
+
+        .cfi_endproc
+
+        .unreq  D
+        .unreq  S
+        .unreq  N
+        .unreq  DAT0
+        .unreq  DAT1
+        .unreq  DAT2
+        .unreq  DAT3
+        .unreq  DAT4
+        .unreq  DAT5
+        .unreq  DAT6
+        .unreq  DAT7
+        .unreq  LAST
+        .unreq  OFF
+.endm
diff -Nur linux-3.18.10/arch/arm/lib/memcpy_rpi.S linux-rpi/arch/arm/lib/memcpy_rpi.S
--- linux-3.18.10/arch/arm/lib/memcpy_rpi.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/lib/memcpy_rpi.S	2015-03-26 11:46:41.764226581 +0100
@@ -0,0 +1,59 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/linkage.h>
+#include "arm-mem.h"
+#include "memcpymove.h"
+
+/* Prevent the stack from becoming executable */
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
+
+    .text
+    .arch armv6
+    .object_arch armv4
+    .arm
+    .altmacro
+    .p2align 2
+
+/*
+ * void *memcpy(void * restrict s1, const void * restrict s2, size_t n);
+ * On entry:
+ * a1 = pointer to destination
+ * a2 = pointer to source
+ * a3 = number of bytes to copy
+ * On exit:
+ * a1 preserved
+ */
+
+.set prefetch_distance, 3
+
+ENTRY(memcpy)
+        memcpy  0
+ENDPROC(memcpy)
diff -Nur linux-3.18.10/arch/arm/lib/memmove_rpi.S linux-rpi/arch/arm/lib/memmove_rpi.S
--- linux-3.18.10/arch/arm/lib/memmove_rpi.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/lib/memmove_rpi.S	2015-03-26 11:46:41.764226581 +0100
@@ -0,0 +1,61 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/linkage.h>
+#include "arm-mem.h"
+#include "memcpymove.h"
+
+/* Prevent the stack from becoming executable */
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
+
+    .text
+    .arch armv6
+    .object_arch armv4
+    .arm
+    .altmacro
+    .p2align 2
+
+/*
+ * void *memmove(void *s1, const void *s2, size_t n);
+ * On entry:
+ * a1 = pointer to destination
+ * a2 = pointer to source
+ * a3 = number of bytes to copy
+ * On exit:
+ * a1 preserved
+ */
+
+.set prefetch_distance, 3
+
+ENTRY(memmove)
+        cmp     a2, a1
+        bpl     memcpy  /* pl works even over -1 - 0 and 0x7fffffff - 0x80000000 boundaries */
+        memcpy  1
+ENDPROC(memmove)
diff -Nur linux-3.18.10/arch/arm/lib/memset_rpi.S linux-rpi/arch/arm/lib/memset_rpi.S
--- linux-3.18.10/arch/arm/lib/memset_rpi.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/lib/memset_rpi.S	2015-03-26 11:46:41.764226581 +0100
@@ -0,0 +1,121 @@
+/*
+Copyright (c) 2013, Raspberry Pi Foundation
+Copyright (c) 2013, RISC OS Open Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/linkage.h>
+#include "arm-mem.h"
+
+/* Prevent the stack from becoming executable */
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
+
+    .text
+    .arch armv6
+    .object_arch armv4
+    .arm
+    .altmacro
+    .p2align 2
+
+/*
+ *  void *memset(void *s, int c, size_t n);
+ *  On entry:
+ *  a1 = pointer to buffer to fill
+ *  a2 = byte pattern to fill with (caller-narrowed)
+ *  a3 = number of bytes to fill
+ *  On exit:
+ *  a1 preserved
+ */
+ENTRY(memset)
+        S       .req    a1
+        DAT0    .req    a2
+        N       .req    a3
+        DAT1    .req    a4
+        DAT2    .req    ip
+        DAT3    .req    lr
+
+        orr     DAT0, DAT0, lsl #8
+        push    {S, lr}
+        orr     DAT0, DAT0, lsl #16
+        mov     DAT1, DAT0
+
+        /* See if we're guaranteed to have at least one 16-byte aligned 16-byte write */
+        cmp     N, #31
+        blo     170f
+
+161:    sub     N, N, #16     /* simplifies inner loop termination */
+        /* Leading words and bytes */
+        tst     S, #15
+        beq     164f
+        rsb     DAT3, S, #0   /* bits 0-3 = number of leading bytes until aligned */
+        movs    DAT2, DAT3, lsl #31
+        submi   N, N, #1
+        strmib  DAT0, [S], #1
+        subcs   N, N, #2
+        strcsh  DAT0, [S], #2
+        movs    DAT2, DAT3, lsl #29
+        submi   N, N, #4
+        strmi   DAT0, [S], #4
+        subcs   N, N, #8
+        stmcsia S!, {DAT0, DAT1}
+164:    /* Delayed set up of DAT2 and DAT3 so we could use them as scratch registers above */
+        mov     DAT2, DAT0
+        mov     DAT3, DAT0
+        /* Now the inner loop of 16-byte stores */
+165:    stmia   S!, {DAT0, DAT1, DAT2, DAT3}
+        subs    N, N, #16
+        bhs     165b
+166:    /* Trailing words and bytes */
+        movs    N, N, lsl #29
+        stmcsia S!, {DAT0, DAT1}
+        strmi   DAT0, [S], #4
+        movs    N, N, lsl #2
+        strcsh  DAT0, [S], #2
+        strmib  DAT0, [S]
+199:    pop     {S, pc}
+
+170:    /* Short case */
+        mov     DAT2, DAT0
+        mov     DAT3, DAT0
+        tst     S, #3
+        beq     174f
+172:    subs    N, N, #1
+        blo     199b
+        strb    DAT0, [S], #1
+        tst     S, #3
+        bne     172b
+174:    tst     N, #16
+        stmneia S!, {DAT0, DAT1, DAT2, DAT3}
+        b       166b
+
+        .unreq  S
+        .unreq  DAT0
+        .unreq  N
+        .unreq  DAT1
+        .unreq  DAT2
+        .unreq  DAT3
+ENDPROC(memset)
diff -Nur linux-3.18.10/arch/arm/lib/uaccess_with_memcpy.c linux-rpi/arch/arm/lib/uaccess_with_memcpy.c
--- linux-3.18.10/arch/arm/lib/uaccess_with_memcpy.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/lib/uaccess_with_memcpy.c	2015-03-26 11:46:41.764226581 +0100
@@ -22,6 +22,14 @@
 #include <asm/current.h>
 #include <asm/page.h>
 
+#ifndef COPY_FROM_USER_THRESHOLD
+#define COPY_FROM_USER_THRESHOLD 64
+#endif
+
+#ifndef COPY_TO_USER_THRESHOLD
+#define COPY_TO_USER_THRESHOLD 64
+#endif
+
 static int
 pin_page_for_write(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp)
 {
@@ -85,7 +93,44 @@
 	return 1;
 }
 
-static unsigned long noinline
+static int
+pin_page_for_read(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp)
+{
+	unsigned long addr = (unsigned long)_addr;
+	pgd_t *pgd;
+	pmd_t *pmd;
+	pte_t *pte;
+	pud_t *pud;
+	spinlock_t *ptl;
+
+	pgd = pgd_offset(current->mm, addr);
+	if (unlikely(pgd_none(*pgd) || pgd_bad(*pgd)))
+	{
+		return 0;
+	}
+	pud = pud_offset(pgd, addr);
+	if (unlikely(pud_none(*pud) || pud_bad(*pud)))
+	{
+		return 0;
+	}
+
+	pmd = pmd_offset(pud, addr);
+	if (unlikely(pmd_none(*pmd) || pmd_bad(*pmd)))
+		return 0;
+
+	pte = pte_offset_map_lock(current->mm, pmd, addr, &ptl);
+	if (unlikely(!pte_present(*pte) || !pte_young(*pte))) {
+		pte_unmap_unlock(pte, ptl);
+		return 0;
+	}
+
+	*ptep = pte;
+	*ptlp = ptl;
+
+	return 1;
+}
+
+unsigned long noinline
 __copy_to_user_memcpy(void __user *to, const void *from, unsigned long n)
 {
 	int atomic;
@@ -135,6 +180,54 @@
 	return n;
 }
 
+unsigned long noinline
+__copy_from_user_memcpy(void *to, const void __user *from, unsigned long n)
+{
+	int atomic;
+
+	if (unlikely(segment_eq(get_fs(), KERNEL_DS))) {
+		memcpy(to, (const void *)from, n);
+		return 0;
+	}
+
+	/* the mmap semaphore is taken only if not in an atomic context */
+	atomic = in_atomic();
+
+	if (!atomic)
+		down_read(&current->mm->mmap_sem);
+	while (n) {
+		pte_t *pte;
+		spinlock_t *ptl;
+		int tocopy;
+
+		while (!pin_page_for_read(from, &pte, &ptl)) {
+			char temp;
+			if (!atomic)
+				up_read(&current->mm->mmap_sem);
+			if (__get_user(temp, (char __user *)from))
+				goto out;
+			if (!atomic)
+				down_read(&current->mm->mmap_sem);
+		}
+
+		tocopy = (~(unsigned long)from & ~PAGE_MASK) + 1;
+		if (tocopy > n)
+			tocopy = n;
+
+		memcpy(to, (const void *)from, tocopy);
+		to += tocopy;
+		from += tocopy;
+		n -= tocopy;
+
+		pte_unmap_unlock(pte, ptl);
+	}
+	if (!atomic)
+		up_read(&current->mm->mmap_sem);
+
+out:
+	return n;
+}
+
 unsigned long
 __copy_to_user(void __user *to, const void *from, unsigned long n)
 {
@@ -145,10 +238,25 @@
 	 * With frame pointer disabled, tail call optimization kicks in
 	 * as well making this test almost invisible.
 	 */
-	if (n < 64)
+	if (n < COPY_TO_USER_THRESHOLD)
 		return __copy_to_user_std(to, from, n);
 	return __copy_to_user_memcpy(to, from, n);
 }
+
+unsigned long
+__copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	/*
+	 * This test is stubbed out of the main function above to keep
+	 * the overhead for small copies low by avoiding a large
+	 * register dump on the stack just to reload them right away.
+	 * With frame pointer disabled, tail call optimization kicks in
+	 * as well making this test almost invisible.
+	 */
+	if (n < COPY_FROM_USER_THRESHOLD)
+		return __copy_from_user_std(to, from, n);
+	return __copy_from_user_memcpy(to, from, n);
+}
 	
 static unsigned long noinline
 __clear_user_memset(void __user *addr, unsigned long n)
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/armctrl.c linux-rpi/arch/arm/mach-bcm2708/armctrl.c
--- linux-3.18.10/arch/arm/mach-bcm2708/armctrl.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/armctrl.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,315 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/armctrl.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/io.h>
+#include <linux/version.h>
+#include <linux/syscore_ops.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+
+#include <asm/mach/irq.h>
+#include <mach/hardware.h>
+#include "armctrl.h"
+
+/* For support of kernels >= 3.0 assume only one VIC for now*/
+static unsigned int remap_irqs[(INTERRUPT_ARASANSDIO + 1) - INTERRUPT_JPEG] = {
+	INTERRUPT_VC_JPEG,
+	INTERRUPT_VC_USB,
+	INTERRUPT_VC_3D,
+	INTERRUPT_VC_DMA2,
+	INTERRUPT_VC_DMA3,
+	INTERRUPT_VC_I2C,
+	INTERRUPT_VC_SPI,
+	INTERRUPT_VC_I2SPCM,
+	INTERRUPT_VC_SDIO,
+	INTERRUPT_VC_UART,
+	INTERRUPT_VC_ARASANSDIO
+};
+
+static void armctrl_mask_irq(struct irq_data *d)
+{
+	static const unsigned int disables[4] = {
+		ARM_IRQ_DIBL1,
+		ARM_IRQ_DIBL2,
+		ARM_IRQ_DIBL3,
+		0
+	};
+
+	if (d->irq >= FIQ_START) {
+		writel(0, __io_address(ARM_IRQ_FAST));
+	} else {
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq);
+		writel(1 << (data & 0x1f), __io_address(disables[(data >> 5) & 0x3]));
+	}
+}
+
+static void armctrl_unmask_irq(struct irq_data *d)
+{
+	static const unsigned int enables[4] = {
+		ARM_IRQ_ENBL1,
+		ARM_IRQ_ENBL2,
+		ARM_IRQ_ENBL3,
+		0
+	};
+
+	if (d->irq >= FIQ_START) {
+		unsigned int data =
+		    (unsigned int)irq_get_chip_data(d->irq) - FIQ_START;
+		writel(0x80 | data, __io_address(ARM_IRQ_FAST));
+	} else {
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq);
+		writel(1 << (data & 0x1f), __io_address(enables[(data >> 5) & 0x3]));
+	}
+}
+
+#ifdef CONFIG_OF
+
+#define NR_IRQS_BANK0           21
+#define NR_BANKS                3
+#define IRQS_PER_BANK           32
+
+/* from drivers/irqchip/irq-bcm2835.c */
+static int armctrl_xlate(struct irq_domain *d, struct device_node *ctrlr,
+        const u32 *intspec, unsigned int intsize,
+        unsigned long *out_hwirq, unsigned int *out_type)
+{
+        if (WARN_ON(intsize != 2))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[0] >= NR_BANKS))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[1] >= IRQS_PER_BANK))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[0] == 0 && intspec[1] >= NR_IRQS_BANK0))
+                return -EINVAL;
+
+	if (intspec[0] == 0)
+		*out_hwirq = ARM_IRQ0_BASE + intspec[1];
+	else if (intspec[0] == 1)
+		*out_hwirq = ARM_IRQ1_BASE + intspec[1];
+	else
+		*out_hwirq = ARM_IRQ2_BASE + intspec[1];
+
+	/* reverse remap_irqs[] */
+	switch (*out_hwirq) {
+	case INTERRUPT_VC_JPEG:
+		*out_hwirq = INTERRUPT_JPEG;
+		break;
+	case INTERRUPT_VC_USB:
+		*out_hwirq = INTERRUPT_USB;
+		break;
+	case INTERRUPT_VC_3D:
+		*out_hwirq = INTERRUPT_3D;
+		break;
+	case INTERRUPT_VC_DMA2:
+		*out_hwirq = INTERRUPT_DMA2;
+		break;
+	case INTERRUPT_VC_DMA3:
+		*out_hwirq = INTERRUPT_DMA3;
+		break;
+	case INTERRUPT_VC_I2C:
+		*out_hwirq = INTERRUPT_I2C;
+		break;
+	case INTERRUPT_VC_SPI:
+		*out_hwirq = INTERRUPT_SPI;
+		break;
+	case INTERRUPT_VC_I2SPCM:
+		*out_hwirq = INTERRUPT_I2SPCM;
+		break;
+	case INTERRUPT_VC_SDIO:
+		*out_hwirq = INTERRUPT_SDIO;
+		break;
+	case INTERRUPT_VC_UART:
+		*out_hwirq = INTERRUPT_UART;
+		break;
+	case INTERRUPT_VC_ARASANSDIO:
+		*out_hwirq = INTERRUPT_ARASANSDIO;
+		break;
+	}
+
+        *out_type = IRQ_TYPE_NONE;
+        return 0;
+}
+
+static struct irq_domain_ops armctrl_ops = {
+        .xlate = armctrl_xlate
+};
+
+void __init armctrl_dt_init(void)
+{
+	struct device_node *np;
+	struct irq_domain *domain;
+
+	np = of_find_compatible_node(NULL, NULL, "brcm,bcm2708-armctrl-ic");
+	if (!np)
+		return;
+
+	domain = irq_domain_add_legacy(np, BCM2708_ALLOC_IRQS,
+					IRQ_ARMCTRL_START, 0,
+					&armctrl_ops, NULL);
+        WARN_ON(!domain);
+}
+#else
+void __init armctrl_dt_init(void) { }
+#endif /* CONFIG_OF */
+
+#if defined(CONFIG_PM)
+
+/* for kernels 3.xx use the new syscore_ops apis but for older kernels use the sys dev class */
+
+/* Static defines
+ * struct armctrl_device - VIC PM device (< 3.xx)
+ * @sysdev: The system device which is registered. (< 3.xx)
+ * @irq: The IRQ number for the base of the VIC.
+ * @base: The register base for the VIC.
+ * @resume_sources: A bitmask of interrupts for resume.
+ * @resume_irqs: The IRQs enabled for resume.
+ * @int_select: Save for VIC_INT_SELECT.
+ * @int_enable: Save for VIC_INT_ENABLE.
+ * @soft_int: Save for VIC_INT_SOFT.
+ * @protect: Save for VIC_PROTECT.
+ */
+struct armctrl_info {
+	void __iomem *base;
+	int irq;
+	u32 resume_sources;
+	u32 resume_irqs;
+	u32 int_select;
+	u32 int_enable;
+	u32 soft_int;
+	u32 protect;
+} armctrl;
+
+static int armctrl_suspend(void)
+{
+	return 0;
+}
+
+static void armctrl_resume(void)
+{
+	return;
+}
+
+/**
+ * armctrl_pm_register - Register a VIC for later power management control
+ * @base: The base address of the VIC.
+ * @irq: The base IRQ for the VIC.
+ * @resume_sources: bitmask of interrupts allowed for resume sources.
+ *
+ * For older kernels (< 3.xx) do -
+ * Register the VIC with the system device tree so that it can be notified
+ * of suspend and resume requests and ensure that the correct actions are
+ * taken to re-instate the settings on resume.
+ */
+static void __init armctrl_pm_register(void __iomem * base, unsigned int irq,
+				       u32 resume_sources)
+{
+	armctrl.base = base;
+	armctrl.resume_sources = resume_sources;
+	armctrl.irq = irq;
+}
+
+static int armctrl_set_wake(struct irq_data *d, unsigned int on)
+{
+	unsigned int off = d->irq & 31;
+	u32 bit = 1 << off;
+
+	if (!(bit & armctrl.resume_sources))
+		return -EINVAL;
+
+	if (on)
+		armctrl.resume_irqs |= bit;
+	else
+		armctrl.resume_irqs &= ~bit;
+
+	return 0;
+}
+
+#else
+static inline void armctrl_pm_register(void __iomem * base, unsigned int irq,
+				       u32 arg1)
+{
+}
+
+#define armctrl_suspend NULL
+#define armctrl_resume NULL
+#define armctrl_set_wake NULL
+#endif /* CONFIG_PM */
+
+static struct syscore_ops armctrl_syscore_ops = {
+	.suspend = armctrl_suspend,
+	.resume = armctrl_resume,
+};
+
+/**
+ * armctrl_syscore_init - initicall to register VIC pm functions
+ *
+ * This is called via late_initcall() to register
+ * the resources for the VICs due to the early
+ * nature of the VIC's registration.
+*/
+static int __init armctrl_syscore_init(void)
+{
+	register_syscore_ops(&armctrl_syscore_ops);
+	return 0;
+}
+
+late_initcall(armctrl_syscore_init);
+
+static struct irq_chip armctrl_chip = {
+	.name = "ARMCTRL",
+	.irq_ack = NULL,
+	.irq_mask = armctrl_mask_irq,
+	.irq_unmask = armctrl_unmask_irq,
+	.irq_set_wake = armctrl_set_wake,
+};
+
+/**
+ * armctrl_init - initialise a vectored interrupt controller
+ * @base: iomem base address
+ * @irq_start: starting interrupt number, must be muliple of 32
+ * @armctrl_sources: bitmask of interrupt sources to allow
+ * @resume_sources: bitmask of interrupt sources to allow for resume
+ */
+int __init armctrl_init(void __iomem * base, unsigned int irq_start,
+			u32 armctrl_sources, u32 resume_sources)
+{
+	unsigned int irq;
+
+	for (irq = 0; irq < BCM2708_ALLOC_IRQS; irq++) {
+		unsigned int data = irq;
+		if (irq >= INTERRUPT_JPEG && irq <= INTERRUPT_ARASANSDIO)
+			data = remap_irqs[irq - INTERRUPT_JPEG];
+
+		irq_set_chip(irq, &armctrl_chip);
+		irq_set_chip_data(irq, (void *)data);
+		irq_set_handler(irq, handle_level_irq);
+		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_DISABLED);
+	}
+
+	armctrl_pm_register(base, irq_start, resume_sources);
+	init_FIQ(FIQ_START);
+	armctrl_dt_init();
+	return 0;
+}
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/armctrl.h linux-rpi/arch/arm/mach-bcm2708/armctrl.h
--- linux-3.18.10/arch/arm/mach-bcm2708/armctrl.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/armctrl.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,27 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/armctrl.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __BCM2708_ARMCTRL_H
+#define __BCM2708_ARMCTRL_H
+
+extern int __init armctrl_init(void __iomem * base, unsigned int irq_start,
+			       u32 armctrl_sources, u32 resume_sources);
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/bcm2708.c linux-rpi/arch/arm/mach-bcm2708/bcm2708.c
--- linux-3.18.10/arch/arm/mach-bcm2708/bcm2708.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/bcm2708.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,1132 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/bcm2708.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/serial_8250.h>
+#include <linux/platform_device.h>
+#include <linux/syscore_ops.h>
+#include <linux/interrupt.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/clcd.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clockchips.h>
+#include <linux/cnt32_to_63.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/spi/spi.h>
+#include <linux/gpio/machine.h>
+#include <linux/w1-gpio.h>
+#include <linux/pps-gpio.h>
+
+#include <linux/version.h>
+#include <linux/clkdev.h>
+#include <asm/system_info.h>
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <linux/leds.h>
+#include <asm/mach-types.h>
+#include <linux/sched_clock.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+#include <asm/mach/map.h>
+
+#include <mach/timex.h>
+#include <mach/dma.h>
+#include <mach/vcio.h>
+#include <mach/system.h>
+
+#include <linux/delay.h>
+
+#include "bcm2708.h"
+#include "armctrl.h"
+
+#ifdef CONFIG_BCM_VC_CMA
+#include <linux/broadcom/vc_cma.h>
+#endif
+
+
+/* Effectively we have an IOMMU (ARM<->VideoCore map) that is set up to
+ * give us IO access only to 64Mbytes of physical memory (26 bits).  We could
+ * represent this window by setting our dmamasks to 26 bits but, in fact
+ * we're not going to use addresses outside this range (they're not in real
+ * memory) so we don't bother.
+ *
+ * In the future we might include code to use this IOMMU to remap other
+ * physical addresses onto VideoCore memory then the use of 32-bits would be
+ * more legitimate.
+ */
+#define DMA_MASK_BITS_COMMON 32
+
+// use GPIO 4 for the one-wire GPIO pin, if enabled
+#define W1_GPIO 4
+// ensure one-wire GPIO pullup is disabled by default
+#define W1_PULLUP -1
+
+/* command line parameters */
+static unsigned boardrev, serial;
+static unsigned uart_clock = UART0_CLOCK;
+static unsigned disk_led_gpio = 16;
+static unsigned disk_led_active_low = 1;
+static unsigned reboot_part = 0;
+static unsigned w1_gpio_pin = W1_GPIO;
+static unsigned w1_gpio_pullup = W1_PULLUP;
+static int pps_gpio_pin = -1;
+static bool vc_i2c_override = false;
+
+static unsigned use_dt = 0;
+
+static void __init bcm2708_init_led(void);
+
+void __init bcm2708_init_irq(void)
+{
+	armctrl_init(__io_address(ARMCTRL_IC_BASE), 0, 0, 0);
+}
+
+static struct map_desc bcm2708_io_desc[] __initdata = {
+	{
+	 .virtual = IO_ADDRESS(ARMCTRL_BASE),
+	 .pfn = __phys_to_pfn(ARMCTRL_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(UART0_BASE),
+	 .pfn = __phys_to_pfn(UART0_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(UART1_BASE),
+	 .pfn = __phys_to_pfn(UART1_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(DMA_BASE),
+	 .pfn = __phys_to_pfn(DMA_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(MCORE_BASE),
+	 .pfn = __phys_to_pfn(MCORE_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(ST_BASE),
+	 .pfn = __phys_to_pfn(ST_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(USB_BASE),
+	 .pfn = __phys_to_pfn(USB_BASE),
+	 .length = SZ_128K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(PM_BASE),
+	 .pfn = __phys_to_pfn(PM_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(GPIO_BASE),
+	 .pfn = __phys_to_pfn(GPIO_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE}
+};
+
+void __init bcm2708_map_io(void)
+{
+	iotable_init(bcm2708_io_desc, ARRAY_SIZE(bcm2708_io_desc));
+}
+
+/* The STC is a free running counter that increments at the rate of 1MHz */
+#define STC_FREQ_HZ 1000000
+
+static inline uint32_t timer_read(void)
+{
+	/* STC: a free running counter that increments at the rate of 1MHz */
+	return readl(__io_address(ST_BASE + 0x04));
+}
+
+static unsigned long bcm2708_read_current_timer(void)
+{
+	return timer_read();
+}
+
+static u64 notrace bcm2708_read_sched_clock(void)
+{
+	return timer_read();
+}
+
+static cycle_t clksrc_read(struct clocksource *cs)
+{
+	return timer_read();
+}
+
+static struct clocksource clocksource_stc = {
+	.name = "stc",
+	.rating = 300,
+	.read = clksrc_read,
+	.mask = CLOCKSOURCE_MASK(32),
+	.flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+unsigned long frc_clock_ticks32(void)
+{
+	return timer_read();
+}
+
+static void __init bcm2708_clocksource_init(void)
+{
+	if (clocksource_register_hz(&clocksource_stc, STC_FREQ_HZ)) {
+		printk(KERN_ERR "timer: failed to initialize clock "
+		       "source %s\n", clocksource_stc.name);
+	}
+}
+
+struct clk __init *bcm2708_clk_register(const char *name, unsigned long fixed_rate)
+{
+	struct clk *clk;
+
+	clk = clk_register_fixed_rate(NULL, name, NULL, CLK_IS_ROOT,
+						fixed_rate);
+	if (IS_ERR(clk))
+		pr_err("%s not registered\n", name);
+
+	return clk;
+}
+
+void __init bcm2708_register_clkdev(struct clk *clk, const char *name)
+{
+	int ret;
+
+	ret = clk_register_clkdev(clk, NULL, name);
+	if (ret)
+		pr_err("%s alias not registered\n", name);
+}
+
+void __init bcm2708_init_clocks(void)
+{
+	struct clk *clk;
+
+	clk = bcm2708_clk_register("uart0_clk", uart_clock);
+	bcm2708_register_clkdev(clk, "dev:f1");
+
+	clk = bcm2708_clk_register("sdhost_clk", 250000000);
+	bcm2708_register_clkdev(clk, "bcm2708_spi.0");
+	bcm2708_register_clkdev(clk, "bcm2708_i2c.0");
+	bcm2708_register_clkdev(clk, "bcm2708_i2c.1");
+}
+
+#define UART0_IRQ	{ IRQ_UART, 0 /*NO_IRQ*/ }
+#define UART0_DMA	{ 15, 14 }
+
+AMBA_DEVICE(uart0, "dev:f1", UART0, NULL);
+
+static struct amba_device *amba_devs[] __initdata = {
+	&uart0_device,
+};
+
+static struct resource bcm2708_dmaman_resources[] = {
+	{
+	 .start = DMA_BASE,
+	 .end = DMA_BASE + SZ_4K - 1,
+	 .flags = IORESOURCE_MEM,
+	 }
+};
+
+static struct platform_device bcm2708_dmaman_device = {
+	.name = BCM_DMAMAN_DRIVER_NAME,
+	.id = 0,		/* first bcm2708_dma */
+	.resource = bcm2708_dmaman_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_dmaman_resources),
+};
+
+#if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
+static struct w1_gpio_platform_data w1_gpio_pdata = {
+	.pin = W1_GPIO,
+        .ext_pullup_enable_pin = W1_PULLUP,
+	.is_open_drain = 0,
+};
+
+static struct platform_device w1_device = {
+	.name = "w1-gpio",
+	.id = -1,
+	.dev.platform_data = &w1_gpio_pdata,
+};
+#endif
+
+static struct pps_gpio_platform_data pps_gpio_info = {
+	.assert_falling_edge = false,
+	.capture_clear = false,
+	.gpio_pin = -1,
+	.gpio_label = "PPS",
+};
+
+static struct platform_device pps_gpio_device = {
+	.name = "pps-gpio",
+	.id = PLATFORM_DEVID_NONE,
+	.dev.platform_data = &pps_gpio_info,
+};
+
+static u64 fb_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_fb_device = {
+	.name = "bcm2708_fb",
+	.id = -1,		/* only one bcm2708_fb */
+	.resource = NULL,
+	.num_resources = 0,
+	.dev = {
+		.dma_mask = &fb_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+
+static struct plat_serial8250_port bcm2708_uart1_platform_data[] = {
+	{
+	 .mapbase = UART1_BASE + 0x40,
+	 .irq = IRQ_AUX,
+	 .uartclk = 125000000,
+	 .regshift = 2,
+	 .iotype = UPIO_MEM,
+	 .flags = UPF_FIXED_TYPE | UPF_IOREMAP | UPF_SKIP_TEST,
+	 .type = PORT_8250,
+	 },
+	{},
+};
+
+static struct platform_device bcm2708_uart1_device = {
+	.name = "serial8250",
+	.id = PLAT8250_DEV_PLATFORM,
+	.dev = {
+		.platform_data = bcm2708_uart1_platform_data,
+		},
+};
+
+static struct resource bcm2708_usb_resources[] = {
+	[0] = {
+	       .start = USB_BASE,
+	       .end = USB_BASE + SZ_128K - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+	[1] = {
+		.start = MPHI_BASE,
+		.end = MPHI_BASE + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+	      },
+	[2] = {
+	       .start = IRQ_HOSTPORT,
+	       .end = IRQ_HOSTPORT,
+	       .flags = IORESOURCE_IRQ,
+	       },
+	[3] = {
+			.start = IRQ_USB,
+			.end = IRQ_USB,
+			.flags = IORESOURCE_IRQ,
+			},
+};
+
+
+static u64 usb_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_usb_device = {
+	.name = "bcm2708_usb",
+	.id = -1,		/* only one bcm2708_usb */
+	.resource = bcm2708_usb_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_usb_resources),
+	.dev = {
+		.dma_mask = &usb_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+
+static struct resource bcm2708_vcio_resources[] = {
+	[0] = {			/* mailbox/semaphore/doorbell access */
+	       .start = MCORE_BASE,
+	       .end = MCORE_BASE + SZ_4K - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+};
+
+static u64 vcio_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_vcio_device = {
+	.name = BCM_VCIO_DRIVER_NAME,
+	.id = -1,		/* only one VideoCore I/O area */
+	.resource = bcm2708_vcio_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_vcio_resources),
+	.dev = {
+		.dma_mask = &vcio_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+
+#ifdef CONFIG_BCM2708_GPIO
+#define BCM_GPIO_DRIVER_NAME "bcm2708_gpio"
+
+static struct resource bcm2708_gpio_resources[] = {
+	[0] = {			/* general purpose I/O */
+	       .start = GPIO_BASE,
+	       .end = GPIO_BASE + SZ_4K - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+};
+
+static u64 gpio_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_gpio_device = {
+	.name = BCM_GPIO_DRIVER_NAME,
+	.id = -1,		/* only one VideoCore I/O area */
+	.resource = bcm2708_gpio_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_gpio_resources),
+	.dev = {
+		.dma_mask = &gpio_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+#endif
+
+static struct resource bcm2708_systemtimer_resources[] = {
+	[0] = {			/* system timer access */
+	       .start = ST_BASE,
+	       .end = ST_BASE + SZ_4K - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+	{
+	 .start = IRQ_TIMER3,
+	 .end = IRQ_TIMER3,
+	 .flags = IORESOURCE_IRQ,
+	 }
+
+};
+
+static u64 systemtimer_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_systemtimer_device = {
+	.name = "bcm2708_systemtimer",
+	.id = -1,		/* only one VideoCore I/O area */
+	.resource = bcm2708_systemtimer_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_systemtimer_resources),
+	.dev = {
+		.dma_mask = &systemtimer_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+
+#ifdef CONFIG_MMC_BCM2835	/* Arasan emmc SD (new) */
+static struct resource bcm2835_emmc_resources[] = {
+	[0] = {
+	       .start = EMMC_BASE,
+	       .end = EMMC_BASE + SZ_256 - 1,	/* we only need this area */
+	       /* the memory map actually makes SZ_4K available  */
+	       .flags = IORESOURCE_MEM,
+	       },
+	[1] = {
+	       .start = IRQ_ARASANSDIO,
+	       .end = IRQ_ARASANSDIO,
+	       .flags = IORESOURCE_IRQ,
+	       },
+};
+
+static u64 bcm2835_emmc_dmamask = 0xffffffffUL;
+
+struct platform_device bcm2835_emmc_device = {
+	.name = "mmc-bcm2835",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2835_emmc_resources),
+	.resource = bcm2835_emmc_resources,
+	.dev = {
+		.dma_mask = &bcm2835_emmc_dmamask,
+		.coherent_dma_mask = 0xffffffffUL},
+};
+#endif /* CONFIG_MMC_BCM2835 */
+
+static struct resource bcm2708_powerman_resources[] = {
+	[0] = {
+	       .start = PM_BASE,
+	       .end = PM_BASE + SZ_256 - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+};
+
+static u64 powerman_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+struct platform_device bcm2708_powerman_device = {
+	.name = "bcm2708_powerman",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2708_powerman_resources),
+	.resource = bcm2708_powerman_resources,
+	.dev = {
+		.dma_mask = &powerman_dmamask,
+		.coherent_dma_mask = 0xffffffffUL},
+};
+
+
+static struct platform_device bcm2708_alsa_devices[] = {
+	[0] = {
+	       .name = "bcm2835_AUD0",
+	       .id = 0,		/* first audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[1] = {
+	       .name = "bcm2835_AUD1",
+	       .id = 1,		/* second audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[2] = {
+	       .name = "bcm2835_AUD2",
+	       .id = 2,		/* third audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[3] = {
+	       .name = "bcm2835_AUD3",
+	       .id = 3,		/* forth audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[4] = {
+	       .name = "bcm2835_AUD4",
+	       .id = 4,		/* fifth audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[5] = {
+	       .name = "bcm2835_AUD5",
+	       .id = 5,		/* sixth audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[6] = {
+	       .name = "bcm2835_AUD6",
+	       .id = 6,		/* seventh audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[7] = {
+	       .name = "bcm2835_AUD7",
+	       .id = 7,		/* eighth audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+};
+
+static struct resource bcm2708_spi_resources[] = {
+	{
+		.start = SPI0_BASE,
+		.end = SPI0_BASE + SZ_256 - 1,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.start = IRQ_SPI,
+		.end = IRQ_SPI,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+
+static u64 bcm2708_spi_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+static struct platform_device bcm2708_spi_device = {
+	.name = "bcm2708_spi",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2708_spi_resources),
+	.resource = bcm2708_spi_resources,
+	.dev = {
+		.dma_mask = &bcm2708_spi_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON)},
+};
+
+#ifdef CONFIG_BCM2708_SPIDEV
+static struct spi_board_info bcm2708_spi_devices[] = {
+#ifdef CONFIG_SPI_SPIDEV
+	{
+		.modalias = "spidev",
+		.max_speed_hz = 500000,
+		.bus_num = 0,
+		.chip_select = 0,
+		.mode = SPI_MODE_0,
+	}, {
+		.modalias = "spidev",
+		.max_speed_hz = 500000,
+		.bus_num = 0,
+		.chip_select = 1,
+		.mode = SPI_MODE_0,
+	}
+#endif
+};
+#endif
+
+static struct resource bcm2708_bsc0_resources[] = {
+	{
+		.start = BSC0_BASE,
+		.end = BSC0_BASE + SZ_256 - 1,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.start = INTERRUPT_I2C,
+		.end = INTERRUPT_I2C,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device bcm2708_bsc0_device = {
+	.name = "bcm2708_i2c",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2708_bsc0_resources),
+	.resource = bcm2708_bsc0_resources,
+};
+
+
+static struct resource bcm2708_bsc1_resources[] = {
+	{
+		.start = BSC1_BASE,
+		.end = BSC1_BASE + SZ_256 - 1,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.start = INTERRUPT_I2C,
+		.end = INTERRUPT_I2C,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device bcm2708_bsc1_device = {
+	.name = "bcm2708_i2c",
+	.id = 1,
+	.num_resources = ARRAY_SIZE(bcm2708_bsc1_resources),
+	.resource = bcm2708_bsc1_resources,
+};
+
+static struct platform_device bcm2835_hwmon_device = {
+	.name = "bcm2835_hwmon",
+};
+
+static struct platform_device bcm2835_thermal_device = {
+	.name = "bcm2835_thermal",
+};
+
+#if defined(CONFIG_SND_BCM2708_SOC_I2S) || defined(CONFIG_SND_BCM2708_SOC_I2S_MODULE)
+static struct resource bcm2708_i2s_resources[] = {
+	{
+		.start = I2S_BASE,
+		.end = I2S_BASE + 0x20,
+		.flags = IORESOURCE_MEM,
+	},
+        {
+		.start = PCM_CLOCK_BASE,
+		.end = PCM_CLOCK_BASE + 0x02,
+		.flags = IORESOURCE_MEM,
+	}
+};
+
+static struct platform_device bcm2708_i2s_device = {
+	.name = "bcm2708-i2s",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2708_i2s_resources),
+	.resource = bcm2708_i2s_resources,
+};
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC_MODULE)
+static struct platform_device snd_hifiberry_dac_device = {
+        .name = "snd-hifiberry-dac",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct platform_device snd_pcm5102a_codec_device = {
+        .name = "pcm5102a-codec",
+        .id = -1,
+        .num_resources = 0,
+};
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE)
+static struct platform_device snd_rpi_hifiberry_dacplus_device = {
+        .name = "snd-rpi-hifiberry-dacplus",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct i2c_board_info __initdata snd_pcm512x_hbdacplus_i2c_devices[] = {
+        {
+                I2C_BOARD_INFO("pcm5122", 0x4d)
+        },
+};
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE)
+static struct platform_device snd_hifiberry_digi_device = {
+        .name = "snd-hifiberry-digi",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct i2c_board_info __initdata snd_wm8804_i2c_devices[] = {
+        {
+                I2C_BOARD_INFO("wm8804", 0x3b)
+        },
+};
+
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP_MODULE)
+static struct platform_device snd_hifiberry_amp_device = {
+        .name = "snd-hifiberry-amp",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct i2c_board_info __initdata snd_tas5713_i2c_devices[] = {
+        {
+                I2C_BOARD_INFO("tas5713", 0x1b)
+        },
+};
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE)
+static struct platform_device snd_rpi_dac_device = {
+        .name = "snd-rpi-dac",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct platform_device snd_pcm1794a_codec_device = {
+        .name = "pcm1794a-codec",
+        .id = -1,
+        .num_resources = 0,
+};
+#endif
+
+
+#if defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) || defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC_MODULE)
+static struct platform_device snd_rpi_iqaudio_dac_device = {
+        .name = "snd-rpi-iqaudio-dac",
+        .id = 0,
+        .num_resources = 0,
+};
+
+// Use the actual device name rather than generic driver name
+static struct i2c_board_info __initdata snd_pcm512x_i2c_devices[] = {
+	{
+		I2C_BOARD_INFO("pcm5122", 0x4c)
+	},
+};
+#endif
+
+int __init bcm_register_device(struct platform_device *pdev)
+{
+	int ret;
+
+	ret = platform_device_register(pdev);
+	if (ret)
+		pr_debug("Unable to register platform device '%s': %d\n",
+			 pdev->name, ret);
+
+	return ret;
+}
+
+/*
+ * Use these macros for platform and i2c devices that are present in the
+ * Device Tree. This way the devices are only added on non-DT systems.
+ */
+#define bcm_register_device_dt(pdev) \
+    if (!use_dt) bcm_register_device(pdev)
+
+#define i2c_register_board_info_dt(busnum, info, n) \
+    if (!use_dt) i2c_register_board_info(busnum, info, n)
+
+int calc_rsts(int partition)
+{
+	return PM_PASSWORD |
+		((partition & (1 << 0))  << 0) |
+		((partition & (1 << 1))  << 1) |
+		((partition & (1 << 2))  << 2) |
+		((partition & (1 << 3))  << 3) |
+		((partition & (1 << 4))  << 4) |
+		((partition & (1 << 5))  << 5);
+}
+
+static void bcm2708_restart(enum reboot_mode mode, const char *cmd)
+{
+	extern char bcm2708_reboot_mode;
+	uint32_t pm_rstc, pm_wdog;
+	uint32_t timeout = 10;
+	uint32_t pm_rsts = 0;
+
+	if(bcm2708_reboot_mode == 'q')
+	{
+		// NOOBS < 1.3 booting with reboot=q
+		pm_rsts = readl(__io_address(PM_RSTS));
+		pm_rsts = PM_PASSWORD | pm_rsts | PM_RSTS_HADWRQ_SET;
+	}
+	else if(bcm2708_reboot_mode == 'p')
+	{
+		// NOOBS < 1.3 halting
+		pm_rsts = readl(__io_address(PM_RSTS));
+		pm_rsts = PM_PASSWORD | pm_rsts | PM_RSTS_HADWRH_SET;
+	}
+	else
+	{
+		pm_rsts = calc_rsts(reboot_part);
+	}
+
+	writel(pm_rsts, __io_address(PM_RSTS));
+
+	/* Setup watchdog for reset */
+	pm_rstc = readl(__io_address(PM_RSTC));
+
+	pm_wdog = PM_PASSWORD | (timeout & PM_WDOG_TIME_SET); // watchdog timer = timer clock / 16; need password (31:16) + value (11:0)
+	pm_rstc = PM_PASSWORD | (pm_rstc & PM_RSTC_WRCFG_CLR) | PM_RSTC_WRCFG_FULL_RESET;
+
+	writel(pm_wdog, __io_address(PM_WDOG));
+	writel(pm_rstc, __io_address(PM_RSTC));
+}
+
+/* We can't really power off, but if we do the normal reset scheme, and indicate to bootcode.bin not to reboot, then most of the chip will be powered off */
+static void bcm2708_power_off(void)
+{
+	extern char bcm2708_reboot_mode;
+	if(bcm2708_reboot_mode == 'q')
+	{
+		// NOOBS < v1.3
+		bcm2708_restart('p', "");
+	}
+	else
+	{
+		/* partition 63 is special code for HALT the bootloader knows not to boot*/
+		reboot_part = 63;
+		/* continue with normal reset mechanism */
+		bcm2708_restart(0, "");
+	}
+}
+
+#ifdef CONFIG_OF
+static void __init bcm2708_dt_init(void)
+{
+	int ret;
+
+	of_clk_init(NULL);
+	ret = of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+	if (ret) {
+		pr_err("of_platform_populate failed: %d\n", ret);
+		/* Proceed as if CONFIG_OF was not defined */
+	} else {
+		use_dt = 1;
+	}
+}
+#else
+static void __init bcm2708_dt_init(void) { }
+#endif /* CONFIG_OF */
+
+void __init bcm2708_init(void)
+{
+	int i;
+
+#if defined(CONFIG_BCM_VC_CMA)
+	vc_cma_early_init();
+#endif
+	printk("bcm2708.uart_clock = %d\n", uart_clock);
+	pm_power_off = bcm2708_power_off;
+
+	bcm2708_init_clocks();
+	bcm2708_dt_init();
+
+	bcm_register_device(&bcm2708_dmaman_device);
+	bcm_register_device(&bcm2708_vcio_device);
+#ifdef CONFIG_BCM2708_GPIO
+	bcm_register_device_dt(&bcm2708_gpio_device);
+#endif
+
+#if defined(CONFIG_PPS_CLIENT_GPIO) || defined(CONFIG_PPS_CLIENT_GPIO_MODULE)
+	if (!use_dt && (pps_gpio_pin >= 0)) {
+		pr_info("bcm2708: GPIO %d setup as pps-gpio device\n", pps_gpio_pin);
+		pps_gpio_info.gpio_pin = pps_gpio_pin;
+		pps_gpio_device.id = pps_gpio_pin;
+		bcm_register_device(&pps_gpio_device);
+	}
+#endif
+
+#if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
+	w1_gpio_pdata.pin = w1_gpio_pin;
+	w1_gpio_pdata.ext_pullup_enable_pin = w1_gpio_pullup;
+	bcm_register_device_dt(&w1_device);
+#endif
+	bcm_register_device(&bcm2708_systemtimer_device);
+	bcm_register_device(&bcm2708_fb_device);
+	bcm_register_device(&bcm2708_usb_device);
+	bcm_register_device(&bcm2708_uart1_device);
+	bcm_register_device(&bcm2708_powerman_device);
+
+#ifdef CONFIG_MMC_BCM2835
+	bcm_register_device(&bcm2835_emmc_device);
+#endif
+	bcm2708_init_led();
+	for (i = 0; i < ARRAY_SIZE(bcm2708_alsa_devices); i++)
+		bcm_register_device(&bcm2708_alsa_devices[i]);
+
+	bcm_register_device(&bcm2835_hwmon_device);
+	bcm_register_device(&bcm2835_thermal_device);
+
+	bcm_register_device_dt(&bcm2708_spi_device);
+
+	if (vc_i2c_override) {
+		bcm_register_device_dt(&bcm2708_bsc0_device);
+		bcm_register_device_dt(&bcm2708_bsc1_device);
+	} else if ((boardrev & 0xffffff) == 0x2 || (boardrev & 0xffffff) == 0x3) {
+		bcm_register_device_dt(&bcm2708_bsc0_device);
+	} else {
+		bcm_register_device_dt(&bcm2708_bsc1_device);
+	}
+
+#if defined(CONFIG_SND_BCM2708_SOC_I2S) || defined(CONFIG_SND_BCM2708_SOC_I2S_MODULE)
+	bcm_register_device_dt(&bcm2708_i2s_device);
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC_MODULE)
+        bcm_register_device_dt(&snd_hifiberry_dac_device);
+        bcm_register_device_dt(&snd_pcm5102a_codec_device);
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE)
+        bcm_register_device_dt(&snd_rpi_hifiberry_dacplus_device);
+        i2c_register_board_info_dt(1, snd_pcm512x_hbdacplus_i2c_devices, ARRAY_SIZE(snd_pcm512x_hbdacplus_i2c_devices));
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE)
+        bcm_register_device_dt(&snd_hifiberry_digi_device);
+        i2c_register_board_info_dt(1, snd_wm8804_i2c_devices, ARRAY_SIZE(snd_wm8804_i2c_devices));
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP_MODULE)
+        bcm_register_device_dt(&snd_hifiberry_amp_device);
+        i2c_register_board_info_dt(1, snd_tas5713_i2c_devices, ARRAY_SIZE(snd_tas5713_i2c_devices));
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE)
+        bcm_register_device_dt(&snd_rpi_dac_device);
+        bcm_register_device_dt(&snd_pcm1794a_codec_device);
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) || defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC_MODULE)
+        bcm_register_device_dt(&snd_rpi_iqaudio_dac_device);
+        i2c_register_board_info_dt(1, snd_pcm512x_i2c_devices, ARRAY_SIZE(snd_pcm512x_i2c_devices));
+#endif
+
+
+	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
+		struct amba_device *d = amba_devs[i];
+		amba_device_register(d, &iomem_resource);
+	}
+	system_rev = boardrev;
+	system_serial_low = serial;
+
+#ifdef CONFIG_BCM2708_SPIDEV
+	if (!use_dt)
+	    spi_register_board_info(bcm2708_spi_devices,
+				    ARRAY_SIZE(bcm2708_spi_devices));
+#endif
+}
+
+static void timer_set_mode(enum clock_event_mode mode,
+			   struct clock_event_device *clk)
+{
+	switch (mode) {
+	case CLOCK_EVT_MODE_ONESHOT: /* Leave the timer disabled, .set_next_event will enable it */
+	case CLOCK_EVT_MODE_SHUTDOWN:
+		break;
+	case CLOCK_EVT_MODE_PERIODIC:
+
+	case CLOCK_EVT_MODE_UNUSED:
+	case CLOCK_EVT_MODE_RESUME:
+
+	default:
+		printk(KERN_ERR "timer_set_mode: unhandled mode:%d\n",
+		       (int)mode);
+		break;
+	}
+
+}
+
+static int timer_set_next_event(unsigned long cycles,
+				struct clock_event_device *unused)
+{
+	unsigned long stc;
+	do {
+		stc = readl(__io_address(ST_BASE + 0x04));
+		/* We could take a FIQ here, which may push ST above STC3 */
+		writel(stc + cycles, __io_address(ST_BASE + 0x18));
+	} while ((signed long) cycles >= 0 &&
+				(signed long) (readl(__io_address(ST_BASE + 0x04)) - stc)
+				>= (signed long) cycles);
+	return 0;
+}
+
+static struct clock_event_device timer0_clockevent = {
+	.name = "timer0",
+	.shift = 32,
+	.features = CLOCK_EVT_FEAT_ONESHOT,
+	.set_mode = timer_set_mode,
+	.set_next_event = timer_set_next_event,
+};
+
+/*
+ * IRQ handler for the timer
+ */
+static irqreturn_t bcm2708_timer_interrupt(int irq, void *dev_id)
+{
+	struct clock_event_device *evt = &timer0_clockevent;
+
+	writel(1 << 3, __io_address(ST_BASE + 0x00));	/* stcs clear timer int */
+
+	evt->event_handler(evt);
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction bcm2708_timer_irq = {
+	.name = "BCM2708 Timer Tick",
+	.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+	.handler = bcm2708_timer_interrupt,
+};
+
+/*
+ * Set up timer interrupt, and return the current time in seconds.
+ */
+
+static struct delay_timer bcm2708_delay_timer = {
+	.read_current_timer = bcm2708_read_current_timer,
+	.freq = STC_FREQ_HZ,
+};
+
+static void __init bcm2708_timer_init(void)
+{
+	/* init high res timer */
+	bcm2708_clocksource_init();
+
+	/*
+	 * Initialise to a known state (all timers off)
+	 */
+	writel(0, __io_address(ARM_T_CONTROL));
+	/*
+	 * Make irqs happen for the system timer
+	 */
+	setup_irq(IRQ_TIMER3, &bcm2708_timer_irq);
+
+	sched_clock_register(bcm2708_read_sched_clock, 32, STC_FREQ_HZ);
+
+	timer0_clockevent.mult =
+	    div_sc(STC_FREQ_HZ, NSEC_PER_SEC, timer0_clockevent.shift);
+	timer0_clockevent.max_delta_ns =
+	    clockevent_delta2ns(0xffffffff, &timer0_clockevent);
+	timer0_clockevent.min_delta_ns =
+	    clockevent_delta2ns(0xf, &timer0_clockevent);
+
+	timer0_clockevent.cpumask = cpumask_of(0);
+	clockevents_register_device(&timer0_clockevent);
+
+	register_current_timer_delay(&bcm2708_delay_timer);
+}
+
+#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
+#include <linux/leds.h>
+
+static struct gpio_led bcm2708_leds[] = {
+	[0] = {
+	       .gpio = 16,
+	       .name = "led0",
+	       .default_trigger = "mmc0",
+	       .active_low = 1,
+	       },
+};
+
+static struct gpio_led_platform_data bcm2708_led_pdata = {
+	.num_leds = ARRAY_SIZE(bcm2708_leds),
+	.leds = bcm2708_leds,
+};
+
+static struct platform_device bcm2708_led_device = {
+	.name = "leds-gpio",
+	.id = -1,
+	.dev = {
+		.platform_data = &bcm2708_led_pdata,
+		},
+};
+
+static void __init bcm2708_init_led(void)
+{
+	bcm2708_leds[0].gpio = disk_led_gpio;
+	bcm2708_leds[0].active_low = disk_led_active_low;
+	bcm_register_device_dt(&bcm2708_led_device);
+}
+#else
+static inline void bcm2708_init_led(void)
+{
+}
+#endif
+
+void __init bcm2708_init_early(void)
+{
+	/*
+	 * Some devices allocate their coherent buffers from atomic
+	 * context. Increase size of atomic coherent pool to make sure such
+	 * the allocations won't fail.
+	 */
+	init_dma_coherent_pool_size(SZ_4M);
+}
+
+static void __init board_reserve(void)
+{
+#if defined(CONFIG_BCM_VC_CMA)
+	vc_cma_reserve();
+#endif
+}
+
+static const char * const bcm2708_compat[] = {
+	"brcm,bcm2708",
+	NULL
+};
+
+MACHINE_START(BCM2708, "BCM2708")
+    /* Maintainer: Broadcom Europe Ltd. */
+	.map_io = bcm2708_map_io,
+	.init_irq = bcm2708_init_irq,
+	.init_time = bcm2708_timer_init,
+	.init_machine = bcm2708_init,
+	.init_early = bcm2708_init_early,
+	.reserve = board_reserve,
+	.restart	= bcm2708_restart,
+	.dt_compat = bcm2708_compat,
+MACHINE_END
+
+module_param(boardrev, uint, 0644);
+module_param(serial, uint, 0644);
+module_param(uart_clock, uint, 0644);
+module_param(disk_led_gpio, uint, 0644);
+module_param(disk_led_active_low, uint, 0644);
+module_param(reboot_part, uint, 0644);
+module_param(w1_gpio_pin, uint, 0644);
+module_param(w1_gpio_pullup, uint, 0644);
+module_param(pps_gpio_pin, int, 0644);
+MODULE_PARM_DESC(pps_gpio_pin, "Set GPIO pin to reserve for PPS");
+module_param(vc_i2c_override, bool, 0644);
+MODULE_PARM_DESC(vc_i2c_override, "Allow the use of VC's I2C peripheral.");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/bcm2708_gpio.c linux-rpi/arch/arm/mach-bcm2708/bcm2708_gpio.c
--- linux-3.18.10/arch/arm/mach-bcm2708/bcm2708_gpio.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/bcm2708_gpio.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,426 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/bcm2708_gpio.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <mach/gpio.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <mach/platform.h>
+#include <linux/pinctrl/consumer.h>
+
+#include <linux/platform_data/bcm2708.h>
+
+#define BCM_GPIO_DRIVER_NAME "bcm2708_gpio"
+#define DRIVER_NAME BCM_GPIO_DRIVER_NAME
+#define BCM_GPIO_USE_IRQ 1
+
+#define GPIOFSEL(x)  (0x00+(x)*4)
+#define GPIOSET(x)   (0x1c+(x)*4)
+#define GPIOCLR(x)   (0x28+(x)*4)
+#define GPIOLEV(x)   (0x34+(x)*4)
+#define GPIOEDS(x)   (0x40+(x)*4)
+#define GPIOREN(x)   (0x4c+(x)*4)
+#define GPIOFEN(x)   (0x58+(x)*4)
+#define GPIOHEN(x)   (0x64+(x)*4)
+#define GPIOLEN(x)   (0x70+(x)*4)
+#define GPIOAREN(x)  (0x7c+(x)*4)
+#define GPIOAFEN(x)  (0x88+(x)*4)
+#define GPIOUD(x)    (0x94+(x)*4)
+#define GPIOUDCLK(x) (0x98+(x)*4)
+
+#define GPIO_BANKS 2
+
+enum { GPIO_FSEL_INPUT, GPIO_FSEL_OUTPUT,
+	GPIO_FSEL_ALT5, GPIO_FSEL_ALT_4,
+	GPIO_FSEL_ALT0, GPIO_FSEL_ALT1,
+	GPIO_FSEL_ALT2, GPIO_FSEL_ALT3,
+};
+
+	/* Each of the two spinlocks protects a different set of hardware
+	 * regiters and data structurs. This decouples the code of the IRQ from
+	 * the GPIO code. This also makes the case of a GPIO routine call from
+	 * the IRQ code simpler.
+	 */
+static DEFINE_SPINLOCK(lock);	/* GPIO registers */
+
+struct bcm2708_gpio {
+	struct list_head list;
+	void __iomem *base;
+	struct gpio_chip gc;
+	unsigned long rising[(BCM2708_NR_GPIOS + 31) / 32];
+	unsigned long falling[(BCM2708_NR_GPIOS + 31) / 32];
+	unsigned long high[(BCM2708_NR_GPIOS + 31) / 32];
+	unsigned long low[(BCM2708_NR_GPIOS + 31) / 32];
+};
+
+static int bcm2708_set_function(struct gpio_chip *gc, unsigned offset,
+				int function)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned long flags;
+	unsigned gpiodir;
+	unsigned gpio_bank = offset / 10;
+	unsigned gpio_field_offset = (offset - 10 * gpio_bank) * 3;
+
+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_set_function %p (%d,%d)\n", gc, offset, function);
+	if (offset >= BCM2708_NR_GPIOS)
+		return -EINVAL;
+
+	spin_lock_irqsave(&lock, flags);
+
+	gpiodir = readl(gpio->base + GPIOFSEL(gpio_bank));
+	gpiodir &= ~(7 << gpio_field_offset);
+	gpiodir |= function << gpio_field_offset;
+	writel(gpiodir, gpio->base + GPIOFSEL(gpio_bank));
+	spin_unlock_irqrestore(&lock, flags);
+	gpiodir = readl(gpio->base + GPIOFSEL(gpio_bank));
+
+	return 0;
+}
+
+static int bcm2708_gpio_dir_in(struct gpio_chip *gc, unsigned offset)
+{
+	return bcm2708_set_function(gc, offset, GPIO_FSEL_INPUT);
+}
+
+static void bcm2708_gpio_set(struct gpio_chip *gc, unsigned offset, int value);
+static int bcm2708_gpio_dir_out(struct gpio_chip *gc, unsigned offset,
+				int value)
+{
+	int ret;
+	ret = bcm2708_set_function(gc, offset, GPIO_FSEL_OUTPUT);
+	if (ret >= 0)
+		bcm2708_gpio_set(gc, offset, value);
+	return ret;
+}
+
+static int bcm2708_gpio_get(struct gpio_chip *gc, unsigned offset)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned gpio_bank = offset / 32;
+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
+	unsigned lev;
+
+	if (offset >= BCM2708_NR_GPIOS)
+		return 0;
+	lev = readl(gpio->base + GPIOLEV(gpio_bank));
+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_get %p (%d)=%d\n", gc, offset, 0x1 & (lev>>gpio_field_offset));
+	return 0x1 & (lev >> gpio_field_offset);
+}
+
+static void bcm2708_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned gpio_bank = offset / 32;
+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_set %p (%d=%d)\n", gc, offset, value);
+	if (offset >= BCM2708_NR_GPIOS)
+		return;
+	if (value)
+		writel(1 << gpio_field_offset, gpio->base + GPIOSET(gpio_bank));
+	else
+		writel(1 << gpio_field_offset, gpio->base + GPIOCLR(gpio_bank));
+}
+
+/**********************
+ * extension to configure pullups
+ */
+int bcm2708_gpio_setpull(struct gpio_chip *gc, unsigned offset,
+		bcm2708_gpio_pull_t value)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned gpio_bank = offset / 32;
+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
+
+	if (offset >= BCM2708_NR_GPIOS)
+		return -EINVAL;
+
+	switch (value) {
+	case BCM2708_PULL_UP:
+		writel(2, gpio->base + GPIOUD(0));
+		break;
+	case BCM2708_PULL_DOWN:
+		writel(1, gpio->base + GPIOUD(0));
+		break;
+	case BCM2708_PULL_OFF:
+		writel(0, gpio->base + GPIOUD(0));
+		break;
+	}
+
+	udelay(5);
+	writel(1 << gpio_field_offset, gpio->base + GPIOUDCLK(gpio_bank));
+	udelay(5);
+	writel(0, gpio->base + GPIOUD(0));
+	writel(0 << gpio_field_offset, gpio->base + GPIOUDCLK(gpio_bank));
+
+	return 0;
+}
+EXPORT_SYMBOL(bcm2708_gpio_setpull);
+
+/*************************************************************************************************************************
+ * bcm2708 GPIO IRQ
+ */
+
+#if BCM_GPIO_USE_IRQ
+
+static int bcm2708_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
+{
+	return gpio_to_irq(gpio);
+}
+
+static int bcm2708_gpio_irq_set_type(struct irq_data *d, unsigned type)
+{
+	unsigned irq = d->irq;
+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
+	unsigned gn = irq_to_gpio(irq);
+	unsigned gb = gn / 32;
+	unsigned go = gn % 32;
+
+	gpio->rising[gb]  &= ~(1 << go);
+	gpio->falling[gb] &= ~(1 << go);
+	gpio->high[gb]    &= ~(1 << go);
+	gpio->low[gb]     &= ~(1 << go);
+
+	if (type & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING | IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
+		return -EINVAL;
+
+	if (type & IRQ_TYPE_EDGE_RISING)
+		gpio->rising[gb] |= (1 << go);
+	if (type & IRQ_TYPE_EDGE_FALLING)
+		gpio->falling[gb] |= (1 << go);
+	if (type & IRQ_TYPE_LEVEL_HIGH)
+		gpio->high[gb] |= (1 << go);
+	if (type & IRQ_TYPE_LEVEL_LOW)
+		gpio->low[gb] |= (1 << go);
+	return 0;
+}
+
+static void bcm2708_gpio_irq_mask(struct irq_data *d)
+{
+	unsigned irq = d->irq;
+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
+	unsigned gn = irq_to_gpio(irq);
+	unsigned gb = gn / 32;
+	unsigned long rising  = readl(gpio->base + GPIOREN(gb));
+	unsigned long falling = readl(gpio->base + GPIOFEN(gb));
+	unsigned long high    = readl(gpio->base + GPIOHEN(gb));
+	unsigned long low     = readl(gpio->base + GPIOLEN(gb));
+
+	gn = gn % 32;
+
+	writel(rising  & ~(1 << gn), gpio->base + GPIOREN(gb));
+	writel(falling & ~(1 << gn), gpio->base + GPIOFEN(gb));
+	writel(high    & ~(1 << gn), gpio->base + GPIOHEN(gb));
+	writel(low     & ~(1 << gn), gpio->base + GPIOLEN(gb));
+}
+
+static void bcm2708_gpio_irq_unmask(struct irq_data *d)
+{
+	unsigned irq = d->irq;
+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
+	unsigned gn = irq_to_gpio(irq);
+	unsigned gb = gn / 32;
+	unsigned go = gn % 32;
+	unsigned long rising  = readl(gpio->base + GPIOREN(gb));
+	unsigned long falling = readl(gpio->base + GPIOFEN(gb));
+	unsigned long high    = readl(gpio->base + GPIOHEN(gb));
+	unsigned long low     = readl(gpio->base + GPIOLEN(gb));
+
+	if (gpio->rising[gb] & (1 << go)) {
+		writel(rising |  (1 << go), gpio->base + GPIOREN(gb));
+	} else {
+		writel(rising & ~(1 << go), gpio->base + GPIOREN(gb));
+	}
+
+	if (gpio->falling[gb] & (1 << go)) {
+		writel(falling |  (1 << go), gpio->base + GPIOFEN(gb));
+	} else {
+		writel(falling & ~(1 << go), gpio->base + GPIOFEN(gb));
+	}
+
+	if (gpio->high[gb] & (1 << go)) {
+		writel(high |  (1 << go), gpio->base + GPIOHEN(gb));
+	} else {
+		writel(high & ~(1 << go), gpio->base + GPIOHEN(gb));
+	}
+
+	if (gpio->low[gb] & (1 << go)) {
+		writel(low |  (1 << go), gpio->base + GPIOLEN(gb));
+	} else {
+		writel(low & ~(1 << go), gpio->base + GPIOLEN(gb));
+	}
+}
+
+static struct irq_chip bcm2708_irqchip = {
+	.name = "GPIO",
+	.irq_enable = bcm2708_gpio_irq_unmask,
+	.irq_disable = bcm2708_gpio_irq_mask,
+	.irq_unmask = bcm2708_gpio_irq_unmask,
+	.irq_mask = bcm2708_gpio_irq_mask,
+	.irq_set_type = bcm2708_gpio_irq_set_type,
+};
+
+static irqreturn_t bcm2708_gpio_interrupt(int irq, void *dev_id)
+{
+	unsigned long edsr;
+	unsigned bank;
+	int i;
+	unsigned gpio;
+	unsigned level_bits;
+	struct bcm2708_gpio *gpio_data = dev_id;
+
+	for (bank = 0; bank < GPIO_BANKS; bank++) {
+		edsr = readl(__io_address(GPIO_BASE) + GPIOEDS(bank));
+		level_bits = gpio_data->high[bank] | gpio_data->low[bank];
+
+		for_each_set_bit(i, &edsr, 32) {
+			gpio = i + bank * 32;
+			/* ack edge triggered IRQs immediately */
+			if (!(level_bits & (1<<i)))
+				writel(1<<i,
+				       __io_address(GPIO_BASE) + GPIOEDS(bank));
+			generic_handle_irq(gpio_to_irq(gpio));
+			/* ack level triggered IRQ after handling them */
+			if (level_bits & (1<<i))
+				writel(1<<i,
+				       __io_address(GPIO_BASE) + GPIOEDS(bank));
+		}
+	}
+	return IRQ_HANDLED;
+}
+
+static struct irqaction bcm2708_gpio_irq = {
+	.name = "BCM2708 GPIO catchall handler",
+	.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+	.handler = bcm2708_gpio_interrupt,
+};
+
+static void bcm2708_gpio_irq_init(struct bcm2708_gpio *ucb)
+{
+	unsigned irq;
+
+	ucb->gc.to_irq = bcm2708_gpio_to_irq;
+
+	for (irq = GPIO_IRQ_START; irq < (GPIO_IRQ_START + GPIO_IRQS); irq++) {
+		irq_set_chip_data(irq, ucb);
+		irq_set_chip_and_handler(irq, &bcm2708_irqchip,
+					 handle_simple_irq);
+		set_irq_flags(irq, IRQF_VALID);
+	}
+
+	bcm2708_gpio_irq.dev_id = ucb;
+	setup_irq(IRQ_GPIO3, &bcm2708_gpio_irq);
+}
+
+#else
+
+static void bcm2708_gpio_irq_init(struct bcm2708_gpio *ucb)
+{
+}
+
+#endif /* #if BCM_GPIO_USE_IRQ ***************************************************************************************************************** */
+
+static int bcm2708_gpio_probe(struct platform_device *dev)
+{
+	struct bcm2708_gpio *ucb;
+	struct resource *res;
+	int bank;
+	int err = 0;
+
+	printk(KERN_INFO DRIVER_NAME ": bcm2708_gpio_probe %p\n", dev);
+
+	ucb = kzalloc(sizeof(*ucb), GFP_KERNEL);
+	if (NULL == ucb) {
+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
+		       "mailbox memory\n");
+		err = -ENOMEM;
+		goto err;
+	}
+
+	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+
+	platform_set_drvdata(dev, ucb);
+	ucb->base = __io_address(GPIO_BASE);
+
+	ucb->gc.label = "bcm2708_gpio";
+	ucb->gc.base = 0;
+	ucb->gc.ngpio = BCM2708_NR_GPIOS;
+	ucb->gc.owner = THIS_MODULE;
+
+	ucb->gc.direction_input = bcm2708_gpio_dir_in;
+	ucb->gc.direction_output = bcm2708_gpio_dir_out;
+	ucb->gc.get = bcm2708_gpio_get;
+	ucb->gc.set = bcm2708_gpio_set;
+	ucb->gc.can_sleep = 0;
+
+	for (bank = 0; bank < GPIO_BANKS; bank++) {
+		writel(0, ucb->base + GPIOREN(bank));
+		writel(0, ucb->base + GPIOFEN(bank));
+		writel(0, ucb->base + GPIOHEN(bank));
+		writel(0, ucb->base + GPIOLEN(bank));
+		writel(0, ucb->base + GPIOAREN(bank));
+		writel(0, ucb->base + GPIOAFEN(bank));
+		writel(~0, ucb->base + GPIOEDS(bank));
+	}
+
+	bcm2708_gpio_irq_init(ucb);
+
+	err = gpiochip_add(&ucb->gc);
+
+err:
+	return err;
+
+}
+
+static int bcm2708_gpio_remove(struct platform_device *dev)
+{
+	int err = 0;
+	struct bcm2708_gpio *ucb = platform_get_drvdata(dev);
+
+	printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_remove %p\n", dev);
+
+	gpiochip_remove(&ucb->gc);
+
+	platform_set_drvdata(dev, NULL);
+	kfree(ucb);
+
+	return err;
+}
+
+static struct platform_driver bcm2708_gpio_driver = {
+	.probe = bcm2708_gpio_probe,
+	.remove = bcm2708_gpio_remove,
+	.driver = {
+		   .name = "bcm2708_gpio"},
+};
+
+static int __init bcm2708_gpio_init(void)
+{
+	return platform_driver_register(&bcm2708_gpio_driver);
+}
+
+static void __exit bcm2708_gpio_exit(void)
+{
+	platform_driver_unregister(&bcm2708_gpio_driver);
+}
+
+module_init(bcm2708_gpio_init);
+module_exit(bcm2708_gpio_exit);
+
+MODULE_DESCRIPTION("Broadcom BCM2708 GPIO driver");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/bcm2708.h linux-rpi/arch/arm/mach-bcm2708/bcm2708.h
--- linux-3.18.10/arch/arm/mach-bcm2708/bcm2708.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/bcm2708.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,49 @@
+/*
+ * linux/arch/arm/mach-bcm2708/bcm2708.h
+ *
+ * BCM2708 machine support header
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __BCM2708_BCM2708_H
+#define __BCM2708_BCM2708_H
+
+#include <linux/amba/bus.h>
+
+extern void __init bcm2708_init(void);
+extern void __init bcm2708_init_irq(void);
+extern void __init bcm2708_map_io(void);
+extern struct sys_timer bcm2708_timer;
+extern unsigned int mmc_status(struct device *dev);
+
+#define AMBA_DEVICE(name, busid, base, plat)			\
+static struct amba_device name##_device = {			\
+	.dev		= {					\
+		.coherent_dma_mask = ~0,			\
+		.init_name = busid,				\
+		.platform_data = plat,				\
+	},							\
+	.res		= {					\
+		.start	= base##_BASE,		\
+		.end	= (base##_BASE) + SZ_4K - 1,\
+		.flags	= IORESOURCE_MEM,			\
+	},							\
+	.irq		= base##_IRQ,				\
+}
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/dma.c linux-rpi/arch/arm/mach-bcm2708/dma.c
--- linux-3.18.10/arch/arm/mach-bcm2708/dma.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/dma.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,409 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/dma.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/scatterlist.h>
+
+#include <mach/dma.h>
+#include <mach/irqs.h>
+
+/*****************************************************************************\
+ *									     *
+ * Configuration							     *
+ *									     *
+\*****************************************************************************/
+
+#define CACHE_LINE_MASK 31
+#define DRIVER_NAME BCM_DMAMAN_DRIVER_NAME
+#define DEFAULT_DMACHAN_BITMAP 0x10  /* channel 4 only */
+
+/* valid only for channels 0 - 14, 15 has its own base address */
+#define BCM2708_DMA_CHAN(n)	((n)<<8) /* base address */
+#define BCM2708_DMA_CHANIO(dma_base, n) \
+   ((void __iomem *)((char *)(dma_base)+BCM2708_DMA_CHAN(n)))
+
+
+/*****************************************************************************\
+ *									     *
+ * DMA Auxilliary Functions						     *
+ *									     *
+\*****************************************************************************/
+
+/* A DMA buffer on an arbitrary boundary may separate a cache line into a
+   section inside the DMA buffer and another section outside it.
+   Even if we flush DMA buffers from the cache there is always the chance that
+   during a DMA someone will access the part of a cache line that is outside
+   the DMA buffer - which will then bring in unwelcome data.
+   Without being able to dictate our own buffer pools we must insist that
+   DMA buffers consist of a whole number of cache lines.
+*/
+
+extern int
+bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len)
+{
+	int i;
+
+	for (i = 0; i < sg_len; i++) {
+		if (sg_ptr[i].offset & CACHE_LINE_MASK ||
+		    sg_ptr[i].length & CACHE_LINE_MASK)
+			return 0;
+	}
+
+	return 1;
+}
+EXPORT_SYMBOL_GPL(bcm_sg_suitable_for_dma);
+
+extern void
+bcm_dma_start(void __iomem *dma_chan_base, dma_addr_t control_block)
+{
+	dsb();	/* ARM data synchronization (push) operation */
+
+	writel(control_block,	     dma_chan_base + BCM2708_DMA_ADDR);
+	writel(BCM2708_DMA_ACTIVE,   dma_chan_base + BCM2708_DMA_CS);
+}
+
+extern void bcm_dma_wait_idle(void __iomem *dma_chan_base)
+{
+  dsb();
+
+  /* ugly busy wait only option for now */
+  while (readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE)
+    cpu_relax();
+}
+
+EXPORT_SYMBOL_GPL(bcm_dma_start);
+
+extern bool bcm_dma_is_busy(void __iomem *dma_chan_base)
+{
+	dsb();
+
+	return readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_is_busy);
+
+/* Complete an ongoing DMA (assuming its results are to be ignored)
+   Does nothing if there is no DMA in progress.
+   This routine waits for the current AXI transfer to complete before
+   terminating the current DMA.	 If the current transfer is hung on a DREQ used
+   by an uncooperative peripheral the AXI transfer may never complete.	In this
+   case the routine times out and return a non-zero error code.
+   Use of this routine doesn't guarantee that the ongoing or aborted DMA
+   does not produce an interrupt.
+*/
+extern int
+bcm_dma_abort(void __iomem *dma_chan_base)
+{
+	unsigned long int cs;
+	int rc = 0;
+
+	cs = readl(dma_chan_base + BCM2708_DMA_CS);
+
+	if (BCM2708_DMA_ACTIVE & cs) {
+		long int timeout = 10000;
+
+		/* write 0 to the active bit - pause the DMA */
+		writel(0, dma_chan_base + BCM2708_DMA_CS);
+
+		/* wait for any current AXI transfer to complete */
+		while (0 != (cs & BCM2708_DMA_ISPAUSED) && --timeout >= 0)
+			cs = readl(dma_chan_base + BCM2708_DMA_CS);
+
+		if (0 != (cs & BCM2708_DMA_ISPAUSED)) {
+			/* we'll un-pause when we set of our next DMA */
+			rc = -ETIMEDOUT;
+
+		} else if (BCM2708_DMA_ACTIVE & cs) {
+			/* terminate the control block chain */
+			writel(0, dma_chan_base + BCM2708_DMA_NEXTCB);
+
+			/* abort the whole DMA */
+			writel(BCM2708_DMA_ABORT | BCM2708_DMA_ACTIVE,
+			       dma_chan_base + BCM2708_DMA_CS);
+		}
+	}
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_abort);
+
+
+/***************************************************************************** \
+ *									     *
+ * DMA Manager Device Methods						     *
+ *									     *
+\*****************************************************************************/
+
+struct vc_dmaman {
+	void __iomem *dma_base;
+	u32 chan_available; /* bitmap of available channels */
+	u32 has_feature[BCM_DMA_FEATURE_COUNT]; /* bitmap of feature presence */
+};
+
+static void vc_dmaman_init(struct vc_dmaman *dmaman, void __iomem *dma_base,
+			   u32 chans_available)
+{
+	dmaman->dma_base = dma_base;
+	dmaman->chan_available = chans_available;
+	dmaman->has_feature[BCM_DMA_FEATURE_FAST_ORD] = 0x0c;  /* chans 2 & 3 */
+	dmaman->has_feature[BCM_DMA_FEATURE_BULK_ORD] = 0x01;  /* chan 0 */
+	dmaman->has_feature[BCM_DMA_FEATURE_NORMAL_ORD] = 0xfe;  /* chans 1 to 7 */
+	dmaman->has_feature[BCM_DMA_FEATURE_LITE_ORD] = 0x7f00;  /* chans 8 to 14 */
+}
+
+static int vc_dmaman_chan_alloc(struct vc_dmaman *dmaman,
+				unsigned preferred_feature_set)
+{
+	u32 chans;
+	int feature;
+
+	chans = dmaman->chan_available;
+	for (feature = 0; feature < BCM_DMA_FEATURE_COUNT; feature++)
+		/* select the subset of available channels with the desired
+		   feature so long as some of the candidate channels have that
+		   feature */
+		if ((preferred_feature_set & (1 << feature)) &&
+		    (chans & dmaman->has_feature[feature]))
+			chans &= dmaman->has_feature[feature];
+
+	if (chans) {
+		int chan = 0;
+		/* return the ordinal of the first channel in the bitmap */
+		while (chans != 0 && (chans & 1) == 0) {
+			chans >>= 1;
+			chan++;
+		}
+		/* claim the channel */
+		dmaman->chan_available &= ~(1 << chan);
+		return chan;
+	} else
+		return -ENOMEM;
+}
+
+static int vc_dmaman_chan_free(struct vc_dmaman *dmaman, int chan)
+{
+	if (chan < 0)
+		return -EINVAL;
+	else if ((1 << chan) & dmaman->chan_available)
+		return -EIDRM;
+	else {
+		dmaman->chan_available |= (1 << chan);
+		return 0;
+	}
+}
+
+/*****************************************************************************\
+ *									     *
+ * DMA IRQs								     *
+ *									     *
+\*****************************************************************************/
+
+static unsigned char bcm_dma_irqs[] = {
+	IRQ_DMA0,
+	IRQ_DMA1,
+	IRQ_DMA2,
+	IRQ_DMA3,
+	IRQ_DMA4,
+	IRQ_DMA5,
+	IRQ_DMA6,
+	IRQ_DMA7,
+	IRQ_DMA8,
+	IRQ_DMA9,
+	IRQ_DMA10,
+	IRQ_DMA11,
+	IRQ_DMA12
+};
+
+
+/***************************************************************************** \
+ *									     *
+ * DMA Manager Monitor							     *
+ *									     *
+\*****************************************************************************/
+
+static struct device *dmaman_dev;	/* we assume there's only one! */
+
+extern int bcm_dma_chan_alloc(unsigned preferred_feature_set,
+			      void __iomem **out_dma_base, int *out_dma_irq)
+{
+	if (!dmaman_dev)
+		return -ENODEV;
+	else {
+		struct vc_dmaman *dmaman  = dev_get_drvdata(dmaman_dev);
+		int rc;
+
+		device_lock(dmaman_dev);
+		rc = vc_dmaman_chan_alloc(dmaman, preferred_feature_set);
+		if (rc >= 0) {
+			*out_dma_base = BCM2708_DMA_CHANIO(dmaman->dma_base,
+							   rc);
+			*out_dma_irq = bcm_dma_irqs[rc];
+		}
+		device_unlock(dmaman_dev);
+
+		return rc;
+	}
+}
+EXPORT_SYMBOL_GPL(bcm_dma_chan_alloc);
+
+extern int bcm_dma_chan_free(int channel)
+{
+	if (dmaman_dev) {
+		struct vc_dmaman *dmaman = dev_get_drvdata(dmaman_dev);
+		int rc;
+
+		device_lock(dmaman_dev);
+		rc = vc_dmaman_chan_free(dmaman, channel);
+		device_unlock(dmaman_dev);
+
+		return rc;
+	} else
+		return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_chan_free);
+
+static int dev_dmaman_register(const char *dev_name, struct device *dev)
+{
+	int rc = dmaman_dev ? -EINVAL : 0;
+	dmaman_dev = dev;
+	return rc;
+}
+
+static void dev_dmaman_deregister(const char *dev_name, struct device *dev)
+{
+	dmaman_dev = NULL;
+}
+
+/*****************************************************************************\
+ *									     *
+ * DMA Device								     *
+ *									     *
+\*****************************************************************************/
+
+static int dmachans = -1; /* module parameter */
+
+static int bcm_dmaman_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	struct vc_dmaman *dmaman;
+	struct resource *dma_res = NULL;
+	void __iomem *dma_base = NULL;
+	int have_dma_region = 0;
+
+	dmaman = kzalloc(sizeof(*dmaman), GFP_KERNEL);
+	if (NULL == dmaman) {
+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
+		       "DMA management memory\n");
+		ret = -ENOMEM;
+	} else {
+
+		dma_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		if (dma_res == NULL) {
+			printk(KERN_ERR DRIVER_NAME ": failed to obtain memory "
+			       "resource\n");
+			ret = -ENODEV;
+		} else if (!request_mem_region(dma_res->start,
+					       resource_size(dma_res),
+					       DRIVER_NAME)) {
+			dev_err(&pdev->dev, "cannot obtain DMA region\n");
+			ret = -EBUSY;
+		} else {
+			have_dma_region = 1;
+			dma_base = ioremap(dma_res->start,
+					   resource_size(dma_res));
+			if (!dma_base) {
+				dev_err(&pdev->dev, "cannot map DMA region\n");
+				ret = -ENOMEM;
+			} else {
+				/* use module parameter if one was provided */
+				if (dmachans > 0)
+					vc_dmaman_init(dmaman, dma_base,
+						       dmachans);
+				else
+					vc_dmaman_init(dmaman, dma_base,
+						       DEFAULT_DMACHAN_BITMAP);
+
+				platform_set_drvdata(pdev, dmaman);
+				dev_dmaman_register(DRIVER_NAME, &pdev->dev);
+
+				printk(KERN_INFO DRIVER_NAME ": DMA manager "
+				       "at %p\n", dma_base);
+			}
+		}
+	}
+	if (ret != 0) {
+		if (dma_base)
+			iounmap(dma_base);
+		if (dma_res && have_dma_region)
+			release_mem_region(dma_res->start,
+					   resource_size(dma_res));
+		if (dmaman)
+			kfree(dmaman);
+	}
+	return ret;
+}
+
+static int bcm_dmaman_remove(struct platform_device *pdev)
+{
+	struct vc_dmaman *dmaman = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	dev_dmaman_deregister(DRIVER_NAME, &pdev->dev);
+	kfree(dmaman);
+
+	return 0;
+}
+
+static struct platform_driver bcm_dmaman_driver = {
+	.probe = bcm_dmaman_probe,
+	.remove = bcm_dmaman_remove,
+
+	.driver = {
+		   .name = DRIVER_NAME,
+		   .owner = THIS_MODULE,
+		   },
+};
+
+/*****************************************************************************\
+ *									     *
+ * Driver init/exit							     *
+ *									     *
+\*****************************************************************************/
+
+static int __init bcm_dmaman_drv_init(void)
+{
+	int ret;
+
+	ret = platform_driver_register(&bcm_dmaman_driver);
+	if (ret != 0) {
+		printk(KERN_ERR DRIVER_NAME ": failed to register "
+		       "on platform\n");
+	}
+
+	return ret;
+}
+
+static void __exit bcm_dmaman_drv_exit(void)
+{
+	platform_driver_unregister(&bcm_dmaman_driver);
+}
+
+module_init(bcm_dmaman_drv_init);
+module_exit(bcm_dmaman_drv_exit);
+
+module_param(dmachans, int, 0644);
+
+MODULE_AUTHOR("Gray Girling <grayg@broadcom.com>");
+MODULE_DESCRIPTION("DMA channel manager driver");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM_DESC(dmachans, "Bitmap of DMA channels available to the ARM");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/arm_control.h linux-rpi/arch/arm/mach-bcm2708/include/mach/arm_control.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/arm_control.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/arm_control.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,419 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/arm_control.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __BCM2708_ARM_CONTROL_H
+#define __BCM2708_ARM_CONTROL_H
+
+/*
+ * Definitions and addresses for the ARM CONTROL logic
+ * This file is manually generated.
+ */
+
+#define ARM_BASE  0x7E00B000
+
+/* Basic configuration */
+#define ARM_CONTROL0  HW_REGISTER_RW(ARM_BASE+0x000)
+#define ARM_C0_SIZ128M   0x00000000
+#define ARM_C0_SIZ256M   0x00000001
+#define ARM_C0_SIZ512M   0x00000002
+#define ARM_C0_SIZ1G     0x00000003
+#define ARM_C0_BRESP0    0x00000000
+#define ARM_C0_BRESP1    0x00000004
+#define ARM_C0_BRESP2    0x00000008
+#define ARM_C0_BOOTHI    0x00000010
+#define ARM_C0_UNUSED05  0x00000020 /* free */
+#define ARM_C0_FULLPERI  0x00000040
+#define ARM_C0_UNUSED78  0x00000180 /* free */
+#define ARM_C0_JTAGMASK  0x00000E00
+#define ARM_C0_JTAGOFF   0x00000000
+#define ARM_C0_JTAGBASH  0x00000800 /* Debug on GPIO off */
+#define ARM_C0_JTAGGPIO  0x00000C00 /* Debug on GPIO on */
+#define ARM_C0_APROTMSK  0x0000F000
+#define ARM_C0_DBG0SYNC  0x00010000 /* VPU0 halt sync */
+#define ARM_C0_DBG1SYNC  0x00020000 /* VPU1 halt sync */
+#define ARM_C0_SWDBGREQ  0x00040000 /* HW debug request */
+#define ARM_C0_PASSHALT  0x00080000 /* ARM halt passed to debugger */
+#define ARM_C0_PRIO_PER  0x00F00000 /* per priority mask */
+#define ARM_C0_PRIO_L2   0x0F000000
+#define ARM_C0_PRIO_UC   0xF0000000
+
+#define ARM_C0_APROTPASS  0x0000A000 /* Translate 1:1 */
+#define ARM_C0_APROTUSER  0x00000000 /* Only user mode */
+#define ARM_C0_APROTSYST  0x0000F000 /* Only system mode */
+
+
+#define ARM_CONTROL1  HW_REGISTER_RW(ARM_BASE+0x440)
+#define ARM_C1_TIMER     0x00000001 /* re-route timer IRQ  to VC */
+#define ARM_C1_MAIL      0x00000002 /* re-route Mail IRQ   to VC */
+#define ARM_C1_BELL0     0x00000004 /* re-route Doorbell 0 to VC */
+#define ARM_C1_BELL1     0x00000008 /* re-route Doorbell 1 to VC */
+#define ARM_C1_PERSON    0x00000100 /* peripherals on */
+#define ARM_C1_REQSTOP   0x00000200 /* ASYNC bridge request stop */
+
+#define ARM_STATUS    HW_REGISTER_RW(ARM_BASE+0x444)
+#define ARM_S_ACKSTOP    0x80000000 /* Bridge stopped */
+#define ARM_S_READPEND   0x000003FF /* pending reads counter */
+#define ARM_S_WRITPEND   0x000FFC00 /* pending writes counter */
+
+#define ARM_ERRHALT   HW_REGISTER_RW(ARM_BASE+0x448)
+#define ARM_EH_PERIBURST  0x00000001 /* Burst write seen on peri bus */
+#define ARM_EH_ILLADDRS1  0x00000002 /* Address bits 25-27 error */
+#define ARM_EH_ILLADDRS2  0x00000004 /* Address bits 31-28 error */
+#define ARM_EH_VPU0HALT   0x00000008 /* VPU0 halted & in debug mode */
+#define ARM_EH_VPU1HALT   0x00000010 /* VPU1 halted & in debug mode */
+#define ARM_EH_ARMHALT    0x00000020 /* ARM in halted debug mode */
+
+#define ARM_ID_SECURE HW_REGISTER_RW(ARM_BASE+0x00C)
+#define ARM_ID        HW_REGISTER_RW(ARM_BASE+0x44C)
+#define ARM_IDVAL        0x364D5241
+
+/* Translation memory */
+#define ARM_TRANSLATE HW_REGISTER_RW(ARM_BASE+0x100)
+/* 32 locations: 0x100.. 0x17F */
+/* 32 spare means we CAN go to 64 pages.... */
+
+
+/* Interrupts */
+#define ARM_IRQ_PEND0 HW_REGISTER_RW(ARM_BASE+0x200)        /* Top IRQ bits */
+#define ARM_I0_TIMER    0x00000001 /* timer IRQ */
+#define ARM_I0_MAIL     0x00000002 /* Mail IRQ */
+#define ARM_I0_BELL0    0x00000004 /* Doorbell 0 */
+#define ARM_I0_BELL1    0x00000008 /* Doorbell 1 */
+#define ARM_I0_BANK1    0x00000100 /* Bank1 IRQ */
+#define ARM_I0_BANK2    0x00000200 /* Bank2 IRQ */
+
+#define ARM_IRQ_PEND1 HW_REGISTER_RW(ARM_BASE+0x204) /* All bank1 IRQ bits */
+/* todo: all I1_interrupt sources */
+#define ARM_IRQ_PEND2 HW_REGISTER_RW(ARM_BASE+0x208) /* All bank2 IRQ bits */
+/* todo: all I2_interrupt sources */
+
+#define ARM_IRQ_FAST  HW_REGISTER_RW(ARM_BASE+0x20C) /* FIQ control */
+#define ARM_IF_INDEX    0x0000007F     /* FIQ select */
+#define ARM_IF_ENABLE   0x00000080     /* FIQ enable */
+#define ARM_IF_VCMASK   0x0000003F     /* FIQ = (index from VC source) */
+#define ARM_IF_TIMER    0x00000040     /* FIQ = ARM timer */
+#define ARM_IF_MAIL     0x00000041     /* FIQ = ARM Mail */
+#define ARM_IF_BELL0    0x00000042     /* FIQ = ARM Doorbell 0 */
+#define ARM_IF_BELL1    0x00000043     /* FIQ = ARM Doorbell 1 */
+#define ARM_IF_VP0HALT  0x00000044     /* FIQ = VPU0 Halt seen */
+#define ARM_IF_VP1HALT  0x00000045     /* FIQ = VPU1 Halt seen */
+#define ARM_IF_ILLEGAL  0x00000046     /* FIQ = Illegal access seen */
+
+#define ARM_IRQ_ENBL1 HW_REGISTER_RW(ARM_BASE+0x210) /* Bank1 enable bits */
+#define ARM_IRQ_ENBL2 HW_REGISTER_RW(ARM_BASE+0x214) /* Bank2 enable bits */
+#define ARM_IRQ_ENBL3 HW_REGISTER_RW(ARM_BASE+0x218) /* ARM irqs enable bits */
+#define ARM_IRQ_DIBL1 HW_REGISTER_RW(ARM_BASE+0x21C) /* Bank1 disable bits */
+#define ARM_IRQ_DIBL2 HW_REGISTER_RW(ARM_BASE+0x220) /* Bank2 disable bits */
+#define ARM_IRQ_DIBL3 HW_REGISTER_RW(ARM_BASE+0x224) /* ARM irqs disable bits */
+#define ARM_IE_TIMER    0x00000001     /* Timer IRQ */
+#define ARM_IE_MAIL     0x00000002     /* Mail IRQ */
+#define ARM_IE_BELL0    0x00000004     /* Doorbell 0 */
+#define ARM_IE_BELL1    0x00000008     /* Doorbell 1 */
+#define ARM_IE_VP0HALT  0x00000010     /* VPU0 Halt */
+#define ARM_IE_VP1HALT  0x00000020     /* VPU1 Halt */
+#define ARM_IE_ILLEGAL  0x00000040     /* Illegal access seen */
+
+/* Timer */
+/* For reg. fields see sp804 spec. */
+#define ARM_T_LOAD    HW_REGISTER_RW(ARM_BASE+0x400)
+#define ARM_T_VALUE   HW_REGISTER_RW(ARM_BASE+0x404)
+#define ARM_T_CONTROL HW_REGISTER_RW(ARM_BASE+0x408)
+#define ARM_T_IRQCNTL HW_REGISTER_RW(ARM_BASE+0x40C)
+#define ARM_T_RAWIRQ  HW_REGISTER_RW(ARM_BASE+0x410)
+#define ARM_T_MSKIRQ  HW_REGISTER_RW(ARM_BASE+0x414)
+#define ARM_T_RELOAD  HW_REGISTER_RW(ARM_BASE+0x418)
+#define ARM_T_PREDIV  HW_REGISTER_RW(ARM_BASE+0x41c)
+#define ARM_T_FREECNT HW_REGISTER_RW(ARM_BASE+0x420)
+
+#define TIMER_CTRL_ONESHOT  (1 << 0)
+#define TIMER_CTRL_32BIT    (1 << 1)
+#define TIMER_CTRL_DIV1     (0 << 2)
+#define TIMER_CTRL_DIV16    (1 << 2)
+#define TIMER_CTRL_DIV256   (2 << 2)
+#define TIMER_CTRL_IE       (1 << 5)
+#define TIMER_CTRL_PERIODIC (1 << 6)
+#define TIMER_CTRL_ENABLE   (1 << 7)
+#define TIMER_CTRL_DBGHALT  (1 << 8)
+#define TIMER_CTRL_ENAFREE  (1 << 9)
+#define TIMER_CTRL_FREEDIV_SHIFT 16)
+#define TIMER_CTRL_FREEDIV_MASK  0xff
+
+/* Semaphores, Doorbells, Mailboxes */
+#define ARM_SBM_OWN0  (ARM_BASE+0x800)
+#define ARM_SBM_OWN1  (ARM_BASE+0x900)
+#define ARM_SBM_OWN2  (ARM_BASE+0xA00)
+#define ARM_SBM_OWN3  (ARM_BASE+0xB00)
+
+/* MAILBOXES
+ * Register flags are common across all
+ * owner registers. See end of this section
+ *
+ * Semaphores, Doorbells, Mailboxes Owner 0
+ *
+ */
+
+#define ARM_0_SEMS       HW_REGISTER_RW(ARM_SBM_OWN0+0x00)
+#define ARM_0_SEM0       HW_REGISTER_RW(ARM_SBM_OWN0+0x00)
+#define ARM_0_SEM1       HW_REGISTER_RW(ARM_SBM_OWN0+0x04)
+#define ARM_0_SEM2       HW_REGISTER_RW(ARM_SBM_OWN0+0x08)
+#define ARM_0_SEM3       HW_REGISTER_RW(ARM_SBM_OWN0+0x0C)
+#define ARM_0_SEM4       HW_REGISTER_RW(ARM_SBM_OWN0+0x10)
+#define ARM_0_SEM5       HW_REGISTER_RW(ARM_SBM_OWN0+0x14)
+#define ARM_0_SEM6       HW_REGISTER_RW(ARM_SBM_OWN0+0x18)
+#define ARM_0_SEM7       HW_REGISTER_RW(ARM_SBM_OWN0+0x1C)
+#define ARM_0_BELL0      HW_REGISTER_RW(ARM_SBM_OWN0+0x40)
+#define ARM_0_BELL1      HW_REGISTER_RW(ARM_SBM_OWN0+0x44)
+#define ARM_0_BELL2      HW_REGISTER_RW(ARM_SBM_OWN0+0x48)
+#define ARM_0_BELL3      HW_REGISTER_RW(ARM_SBM_OWN0+0x4C)
+/* MAILBOX 0 access in Owner 0 area */
+/* Some addresses should ONLY be used by owner 0 */
+#define ARM_0_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN0+0x80)  /* .. 0x8C (4 locations) */
+#define ARM_0_MAIL0_RD   HW_REGISTER_RW(ARM_SBM_OWN0+0x80)  /* .. 0x8C (4 locations) Normal read */
+#define ARM_0_MAIL0_POL  HW_REGISTER_RW(ARM_SBM_OWN0+0x90)  /* none-pop read */
+#define ARM_0_MAIL0_SND  HW_REGISTER_RW(ARM_SBM_OWN0+0x94)  /* Sender read (only LS 2 bits) */
+#define ARM_0_MAIL0_STA  HW_REGISTER_RW(ARM_SBM_OWN0+0x98)  /* Status read */
+#define ARM_0_MAIL0_CNF  HW_REGISTER_RW(ARM_SBM_OWN0+0x9C)  /* Config read/write */
+/* MAILBOX 1 access in Owner 0 area */
+/* Owner 0 should only WRITE to this mailbox */
+#define ARM_0_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN0+0xA0)   /* .. 0xAC (4 locations) */
+/*#define ARM_0_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN0+0xA0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_0_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN0+0xB0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_0_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN0+0xB4) */ /* DO NOT USE THIS !!!!! */
+#define ARM_0_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN0+0xB8)   /* Status read */
+/*#define ARM_0_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN0+0xBC) */ /* DO NOT USE THIS !!!!! */
+/* General SEM, BELL, MAIL config/status */
+#define ARM_0_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN0+0xE0)  /* semaphore clear/debug register */
+#define ARM_0_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN0+0xE4)  /* Doorbells clear/debug register */
+#define ARM_0_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN0+0xF8)  /* ALL interrupts */
+#define ARM_0_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN0+0xFC)  /* IRQS pending for owner 0 */
+
+/* Semaphores, Doorbells, Mailboxes Owner 1 */
+#define ARM_1_SEMS       HW_REGISTER_RW(ARM_SBM_OWN1+0x00)
+#define ARM_1_SEM0       HW_REGISTER_RW(ARM_SBM_OWN1+0x00)
+#define ARM_1_SEM1       HW_REGISTER_RW(ARM_SBM_OWN1+0x04)
+#define ARM_1_SEM2       HW_REGISTER_RW(ARM_SBM_OWN1+0x08)
+#define ARM_1_SEM3       HW_REGISTER_RW(ARM_SBM_OWN1+0x0C)
+#define ARM_1_SEM4       HW_REGISTER_RW(ARM_SBM_OWN1+0x10)
+#define ARM_1_SEM5       HW_REGISTER_RW(ARM_SBM_OWN1+0x14)
+#define ARM_1_SEM6       HW_REGISTER_RW(ARM_SBM_OWN1+0x18)
+#define ARM_1_SEM7       HW_REGISTER_RW(ARM_SBM_OWN1+0x1C)
+#define ARM_1_BELL0      HW_REGISTER_RW(ARM_SBM_OWN1+0x40)
+#define ARM_1_BELL1      HW_REGISTER_RW(ARM_SBM_OWN1+0x44)
+#define ARM_1_BELL2      HW_REGISTER_RW(ARM_SBM_OWN1+0x48)
+#define ARM_1_BELL3      HW_REGISTER_RW(ARM_SBM_OWN1+0x4C)
+/* MAILBOX 0 access in Owner 0 area */
+/* Owner 1 should only WRITE to this mailbox */
+#define ARM_1_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN1+0x80)  /* .. 0x8C (4 locations) */
+/*#define ARM_1_MAIL0_RD  HW_REGISTER_RW(ARM_SBM_OWN1+0x80) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_1_MAIL0_POL HW_REGISTER_RW(ARM_SBM_OWN1+0x90) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_1_MAIL0_SND HW_REGISTER_RW(ARM_SBM_OWN1+0x94) */ /* DO NOT USE THIS !!!!! */
+#define ARM_1_MAIL0_STA  HW_REGISTER_RW(ARM_SBM_OWN1+0x98)  /* Status read */
+/*#define ARM_1_MAIL0_CNF HW_REGISTER_RW(ARM_SBM_OWN1+0x9C) */ /* DO NOT USE THIS !!!!! */
+/* MAILBOX 1 access in Owner 0 area */
+#define ARM_1_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN1+0xA0)  /* .. 0xAC (4 locations) */
+#define ARM_1_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN1+0xA0)  /* .. 0xAC (4 locations) Normal read */
+#define ARM_1_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN1+0xB0)  /* none-pop read */
+#define ARM_1_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN1+0xB4)  /* Sender read (only LS 2 bits) */
+#define ARM_1_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN1+0xB8)  /* Status read */
+#define ARM_1_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN1+0xBC)
+/* General SEM, BELL, MAIL config/status */
+#define ARM_1_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN1+0xE0)  /* semaphore clear/debug register */
+#define ARM_1_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN1+0xE4)  /* Doorbells clear/debug register */
+#define ARM_1_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN1+0xFC)  /* IRQS pending for owner 1 */
+#define ARM_1_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN1+0xF8)  /* ALL interrupts */
+
+/* Semaphores, Doorbells, Mailboxes Owner 2 */
+#define ARM_2_SEMS       HW_REGISTER_RW(ARM_SBM_OWN2+0x00)
+#define ARM_2_SEM0       HW_REGISTER_RW(ARM_SBM_OWN2+0x00)
+#define ARM_2_SEM1       HW_REGISTER_RW(ARM_SBM_OWN2+0x04)
+#define ARM_2_SEM2       HW_REGISTER_RW(ARM_SBM_OWN2+0x08)
+#define ARM_2_SEM3       HW_REGISTER_RW(ARM_SBM_OWN2+0x0C)
+#define ARM_2_SEM4       HW_REGISTER_RW(ARM_SBM_OWN2+0x10)
+#define ARM_2_SEM5       HW_REGISTER_RW(ARM_SBM_OWN2+0x14)
+#define ARM_2_SEM6       HW_REGISTER_RW(ARM_SBM_OWN2+0x18)
+#define ARM_2_SEM7       HW_REGISTER_RW(ARM_SBM_OWN2+0x1C)
+#define ARM_2_BELL0      HW_REGISTER_RW(ARM_SBM_OWN2+0x40)
+#define ARM_2_BELL1      HW_REGISTER_RW(ARM_SBM_OWN2+0x44)
+#define ARM_2_BELL2      HW_REGISTER_RW(ARM_SBM_OWN2+0x48)
+#define ARM_2_BELL3      HW_REGISTER_RW(ARM_SBM_OWN2+0x4C)
+/* MAILBOX 0 access in Owner 2 area */
+/* Owner 2 should only WRITE to this mailbox */
+#define ARM_2_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN2+0x80)   /* .. 0x8C (4 locations) */
+/*#define ARM_2_MAIL0_RD  HW_REGISTER_RW(ARM_SBM_OWN2+0x80)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL0_POL HW_REGISTER_RW(ARM_SBM_OWN2+0x90)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL0_SND HW_REGISTER_RW(ARM_SBM_OWN2+0x94)  */ /* DO NOT USE THIS !!!!! */
+#define ARM_2_MAIL0_STA  HW_REGISTER_RW(ARM_SBM_OWN2+0x98)   /* Status read */
+/*#define ARM_2_MAIL0_CNF HW_REGISTER_RW(ARM_SBM_OWN2+0x9C)  */ /* DO NOT USE THIS !!!!! */
+/* MAILBOX 1 access in Owner 2 area */
+/* Owner 2 should only WRITE to this mailbox */
+#define ARM_2_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN2+0xA0)   /* .. 0xAC (4 locations) */
+/*#define ARM_2_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN2+0xA0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN2+0xB0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN2+0xB4) */ /* DO NOT USE THIS !!!!! */
+#define ARM_2_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN2+0xB8)   /* Status read */
+/*#define ARM_2_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN2+0xBC) */ /* DO NOT USE THIS !!!!! */
+/* General SEM, BELL, MAIL config/status */
+#define ARM_2_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN2+0xE0)  /* semaphore clear/debug register */
+#define ARM_2_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN2+0xE4)  /* Doorbells clear/debug register */
+#define ARM_2_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN2+0xFC)  /* IRQS pending for owner 2 */
+#define ARM_2_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN2+0xF8)  /* ALL interrupts */
+
+/* Semaphores, Doorbells, Mailboxes Owner 3 */
+#define ARM_3_SEMS       HW_REGISTER_RW(ARM_SBM_OWN3+0x00)
+#define ARM_3_SEM0       HW_REGISTER_RW(ARM_SBM_OWN3+0x00)
+#define ARM_3_SEM1       HW_REGISTER_RW(ARM_SBM_OWN3+0x04)
+#define ARM_3_SEM2       HW_REGISTER_RW(ARM_SBM_OWN3+0x08)
+#define ARM_3_SEM3       HW_REGISTER_RW(ARM_SBM_OWN3+0x0C)
+#define ARM_3_SEM4       HW_REGISTER_RW(ARM_SBM_OWN3+0x10)
+#define ARM_3_SEM5       HW_REGISTER_RW(ARM_SBM_OWN3+0x14)
+#define ARM_3_SEM6       HW_REGISTER_RW(ARM_SBM_OWN3+0x18)
+#define ARM_3_SEM7       HW_REGISTER_RW(ARM_SBM_OWN3+0x1C)
+#define ARM_3_BELL0      HW_REGISTER_RW(ARM_SBM_OWN3+0x40)
+#define ARM_3_BELL1      HW_REGISTER_RW(ARM_SBM_OWN3+0x44)
+#define ARM_3_BELL2      HW_REGISTER_RW(ARM_SBM_OWN3+0x48)
+#define ARM_3_BELL3      HW_REGISTER_RW(ARM_SBM_OWN3+0x4C)
+/* MAILBOX 0 access in Owner 3 area */
+/* Owner 3 should only WRITE to this mailbox */
+#define ARM_3_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN3+0x80)   /* .. 0x8C (4 locations) */
+/*#define ARM_3_MAIL0_RD  HW_REGISTER_RW(ARM_SBM_OWN3+0x80)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL0_POL HW_REGISTER_RW(ARM_SBM_OWN3+0x90)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL0_SND HW_REGISTER_RW(ARM_SBM_OWN3+0x94)  */ /* DO NOT USE THIS !!!!! */
+#define ARM_3_MAIL0_STA HW_REGISTER_RW(ARM_SBM_OWN3+0x98)    /* Status read */
+/*#define ARM_3_MAIL0_CNF HW_REGISTER_RW(ARM_SBM_OWN3+0x9C)  */ /* DO NOT USE THIS !!!!! */
+/* MAILBOX 1 access in Owner 3 area */
+/* Owner 3 should only WRITE to this mailbox */
+#define ARM_3_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN3+0xA0)   /* .. 0xAC (4 locations) */
+/*#define ARM_3_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN3+0xA0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN3+0xB0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN3+0xB4) */ /* DO NOT USE THIS !!!!! */
+#define ARM_3_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN3+0xB8)   /* Status read */
+/*#define ARM_3_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN3+0xBC) */ /* DO NOT USE THIS !!!!! */
+/* General SEM, BELL, MAIL config/status */
+#define ARM_3_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN3+0xE0)  /* semaphore clear/debug register */
+#define ARM_3_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN3+0xE4)  /* Doorbells clear/debug register */
+#define ARM_3_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN3+0xFC)  /* IRQS pending for owner 3 */
+#define ARM_3_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN3+0xF8)  /* ALL interrupts */
+
+
+
+/*  Mailbox flags. Valid for all owners */
+
+/* Mailbox status register (...0x98) */
+#define ARM_MS_FULL       0x80000000
+#define ARM_MS_EMPTY      0x40000000
+#define ARM_MS_LEVEL      0x400000FF /* Max. value depdnds on mailbox depth parameter */
+
+/* MAILBOX config/status register (...0x9C) */
+/* ANY write to this register clears the error bits! */
+#define ARM_MC_IHAVEDATAIRQEN    0x00000001 /* mailbox irq enable:  has data */
+#define ARM_MC_IHAVESPACEIRQEN   0x00000002 /* mailbox irq enable:  has space */
+#define ARM_MC_OPPISEMPTYIRQEN   0x00000004 /* mailbox irq enable: Opp. is empty */
+#define ARM_MC_MAIL_CLEAR        0x00000008 /* mailbox clear write 1, then  0 */
+#define ARM_MC_IHAVEDATAIRQPEND  0x00000010 /* mailbox irq pending:  has space */
+#define ARM_MC_IHAVESPACEIRQPEND 0x00000020 /* mailbox irq pending: Opp. is empty */
+#define ARM_MC_OPPISEMPTYIRQPEND 0x00000040 /* mailbox irq pending */
+/* Bit 7 is unused */
+#define ARM_MC_ERRNOOWN   0x00000100 /* error : none owner read from mailbox */
+#define ARM_MC_ERROVERFLW 0x00000200 /* error : write to fill mailbox */
+#define ARM_MC_ERRUNDRFLW 0x00000400 /* error : read from empty mailbox */
+
+/* Semaphore clear/debug register (...0xE0) */
+#define ARM_SD_OWN0      0x00000003  /* Owner of sem 0 */
+#define ARM_SD_OWN1      0x0000000C  /* Owner of sem 1 */
+#define ARM_SD_OWN2      0x00000030  /* Owner of sem 2 */
+#define ARM_SD_OWN3      0x000000C0  /* Owner of sem 3 */
+#define ARM_SD_OWN4      0x00000300  /* Owner of sem 4 */
+#define ARM_SD_OWN5      0x00000C00  /* Owner of sem 5 */
+#define ARM_SD_OWN6      0x00003000  /* Owner of sem 6 */
+#define ARM_SD_OWN7      0x0000C000  /* Owner of sem 7 */
+#define ARM_SD_SEM0      0x00010000  /* Status of sem 0 */
+#define ARM_SD_SEM1      0x00020000  /* Status of sem 1 */
+#define ARM_SD_SEM2      0x00040000  /* Status of sem 2 */
+#define ARM_SD_SEM3      0x00080000  /* Status of sem 3 */
+#define ARM_SD_SEM4      0x00100000  /* Status of sem 4 */
+#define ARM_SD_SEM5      0x00200000  /* Status of sem 5 */
+#define ARM_SD_SEM6      0x00400000  /* Status of sem 6 */
+#define ARM_SD_SEM7      0x00800000  /* Status of sem 7 */
+
+/* Doorbells clear/debug register (...0xE4) */
+#define ARM_BD_OWN0      0x00000003  /* Owner of doorbell 0 */
+#define ARM_BD_OWN1      0x0000000C  /* Owner of doorbell 1 */
+#define ARM_BD_OWN2      0x00000030  /* Owner of doorbell 2 */
+#define ARM_BD_OWN3      0x000000C0  /* Owner of doorbell 3 */
+#define ARM_BD_BELL0     0x00000100  /* Status of doorbell 0 */
+#define ARM_BD_BELL1     0x00000200  /* Status of doorbell 1 */
+#define ARM_BD_BELL2     0x00000400  /* Status of doorbell 2 */
+#define ARM_BD_BELL3     0x00000800  /* Status of doorbell 3 */
+
+/* MY IRQS register (...0xF8) */
+#define ARM_MYIRQ_BELL   0x00000001  /* This owner has a doorbell IRQ */
+#define ARM_MYIRQ_MAIL   0x00000002  /* This owner has a mailbox  IRQ */
+
+/* ALL IRQS register (...0xF8) */
+#define ARM_AIS_BELL0 0x00000001  /* Doorbell 0 IRQ pending */
+#define ARM_AIS_BELL1 0x00000002  /* Doorbell 1 IRQ pending */
+#define ARM_AIS_BELL2 0x00000004  /* Doorbell 2 IRQ pending */
+#define ARM_AIS_BELL3 0x00000008  /* Doorbell 3 IRQ pending */
+#define ARM_AIS0_HAVEDATA 0x00000010  /* MAIL 0 has data IRQ pending */
+#define ARM_AIS0_HAVESPAC 0x00000020  /* MAIL 0 has space IRQ pending */
+#define ARM_AIS0_OPPEMPTY 0x00000040  /* MAIL 0 opposite is empty IRQ */
+#define ARM_AIS1_HAVEDATA 0x00000080  /* MAIL 1 has data IRQ pending */
+#define ARM_AIS1_HAVESPAC 0x00000100  /* MAIL 1 has space IRQ pending */
+#define ARM_AIS1_OPPEMPTY 0x00000200  /* MAIL 1 opposite is empty IRQ */
+/* Note   that bell-0, bell-1 and MAIL0 IRQ go only to the ARM */
+/* Whilst that bell-2, bell-3 and MAIL1 IRQ go only to the VC */
+/* */
+/* ARM JTAG BASH */
+/* */
+#define AJB_BASE 0x7e2000c0
+
+#define AJBCONF HW_REGISTER_RW(AJB_BASE+0x00)
+#define   AJB_BITS0    0x000000
+#define   AJB_BITS4    0x000004
+#define   AJB_BITS8    0x000008
+#define   AJB_BITS12   0x00000C
+#define   AJB_BITS16   0x000010
+#define   AJB_BITS20   0x000014
+#define   AJB_BITS24   0x000018
+#define   AJB_BITS28   0x00001C
+#define   AJB_BITS32   0x000020
+#define   AJB_BITS34   0x000022
+#define   AJB_OUT_MS   0x000040
+#define   AJB_OUT_LS   0x000000
+#define   AJB_INV_CLK  0x000080
+#define   AJB_D0_RISE  0x000100
+#define   AJB_D0_FALL  0x000000
+#define   AJB_D1_RISE  0x000200
+#define   AJB_D1_FALL  0x000000
+#define   AJB_IN_RISE  0x000400
+#define   AJB_IN_FALL  0x000000
+#define   AJB_ENABLE   0x000800
+#define   AJB_HOLD0    0x000000
+#define   AJB_HOLD1    0x001000
+#define   AJB_HOLD2    0x002000
+#define   AJB_HOLD3    0x003000
+#define   AJB_RESETN   0x004000
+#define   AJB_CLKSHFT  16
+#define   AJB_BUSY     0x80000000
+#define AJBTMS HW_REGISTER_RW(AJB_BASE+0x04)
+#define AJBTDI HW_REGISTER_RW(AJB_BASE+0x08)
+#define AJBTDO HW_REGISTER_RW(AJB_BASE+0x0c)
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/arm_power.h linux-rpi/arch/arm/mach-bcm2708/include/mach/arm_power.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/arm_power.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/arm_power.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,62 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/include/mach/arm_power.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _ARM_POWER_H
+#define _ARM_POWER_H
+
+/* Use meaningful names on each side */
+#ifdef __VIDEOCORE__
+#define PREFIX(x) ARM_##x
+#else
+#define PREFIX(x) BCM_##x
+#endif
+
+enum {
+	PREFIX(POWER_SDCARD_BIT),
+	PREFIX(POWER_UART_BIT),
+	PREFIX(POWER_MINIUART_BIT),
+	PREFIX(POWER_USB_BIT),
+	PREFIX(POWER_I2C0_BIT),
+	PREFIX(POWER_I2C1_BIT),
+	PREFIX(POWER_I2C2_BIT),
+	PREFIX(POWER_SPI_BIT),
+	PREFIX(POWER_CCP2TX_BIT),
+	PREFIX(POWER_DSI_BIT),
+
+	PREFIX(POWER_MAX)
+};
+
+enum {
+	PREFIX(POWER_SDCARD) = (1 << PREFIX(POWER_SDCARD_BIT)),
+	PREFIX(POWER_UART) = (1 << PREFIX(POWER_UART_BIT)),
+	PREFIX(POWER_MINIUART) = (1 << PREFIX(POWER_MINIUART_BIT)),
+	PREFIX(POWER_USB) = (1 << PREFIX(POWER_USB_BIT)),
+	PREFIX(POWER_I2C0) = (1 << PREFIX(POWER_I2C0_BIT)),
+	PREFIX(POWER_I2C1_MASK) = (1 << PREFIX(POWER_I2C1_BIT)),
+	PREFIX(POWER_I2C2_MASK) = (1 << PREFIX(POWER_I2C2_BIT)),
+	PREFIX(POWER_SPI_MASK) = (1 << PREFIX(POWER_SPI_BIT)),
+	PREFIX(POWER_CCP2TX_MASK) = (1 << PREFIX(POWER_CCP2TX_BIT)),
+	PREFIX(POWER_DSI) = (1 << PREFIX(POWER_DSI_BIT)),
+
+	PREFIX(POWER_MASK) = (1 << PREFIX(POWER_MAX)) - 1,
+	PREFIX(POWER_NONE) = 0
+};
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/clkdev.h linux-rpi/arch/arm/mach-bcm2708/include/mach/clkdev.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/clkdev.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/clkdev.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,7 @@
+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/debug-macro.S linux-rpi/arch/arm/mach-bcm2708/include/mach/debug-macro.S
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/debug-macro.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/debug-macro.S	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,22 @@
+/* arch/arm/mach-bcm2708/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 1994-1999 Russell King
+ *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+*/
+
+#include <mach/platform.h>
+
+		.macro	addruart, rp, rv, tmp
+		ldr	\rp, =UART0_BASE
+		ldr	\rv, =IO_ADDRESS(UART0_BASE)
+		.endm
+
+#include <debug/pl01x.S>
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/dma.h linux-rpi/arch/arm/mach-bcm2708/include/mach/dma.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/dma.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/dma.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,94 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/include/mach/dma.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+
+#ifndef _MACH_BCM2708_DMA_H
+#define _MACH_BCM2708_DMA_H
+
+#define BCM_DMAMAN_DRIVER_NAME "bcm2708_dma"
+
+/* DMA CS Control and Status bits */
+#define BCM2708_DMA_ACTIVE	(1 << 0)
+#define BCM2708_DMA_INT		(1 << 2)
+#define BCM2708_DMA_ISPAUSED	(1 << 4)  /* Pause requested or not active */
+#define BCM2708_DMA_ISHELD	(1 << 5)  /* Is held by DREQ flow control */
+#define BCM2708_DMA_ERR		(1 << 8)
+#define BCM2708_DMA_ABORT	(1 << 30) /* stop current CB, go to next, WO */
+#define BCM2708_DMA_RESET	(1 << 31) /* WO, self clearing */
+
+/* DMA control block "info" field bits */
+#define BCM2708_DMA_INT_EN	(1 << 0)
+#define BCM2708_DMA_TDMODE	(1 << 1)
+#define BCM2708_DMA_WAIT_RESP	(1 << 3)
+#define BCM2708_DMA_D_INC	(1 << 4)
+#define BCM2708_DMA_D_WIDTH	(1 << 5)
+#define BCM2708_DMA_D_DREQ	(1 << 6)
+#define BCM2708_DMA_S_INC	(1 << 8)
+#define BCM2708_DMA_S_WIDTH	(1 << 9)
+#define BCM2708_DMA_S_DREQ	(1 << 10)
+
+#define	BCM2708_DMA_BURST(x)	(((x)&0xf) << 12)
+#define	BCM2708_DMA_PER_MAP(x)	((x) << 16)
+#define	BCM2708_DMA_WAITS(x)	(((x)&0x1f) << 21)
+
+#define BCM2708_DMA_DREQ_EMMC	11
+#define BCM2708_DMA_DREQ_SDHOST	13
+
+#define BCM2708_DMA_CS		0x00 /* Control and Status */
+#define BCM2708_DMA_ADDR	0x04
+/* the current control block appears in the following registers - read only */
+#define BCM2708_DMA_INFO	0x08
+#define BCM2708_DMA_SOURCE_AD	0x0c
+#define BCM2708_DMA_DEST_AD	0x10
+#define BCM2708_DMA_NEXTCB	0x1C
+#define BCM2708_DMA_DEBUG	0x20
+
+#define BCM2708_DMA4_CS		(BCM2708_DMA_CHAN(4)+BCM2708_DMA_CS)
+#define BCM2708_DMA4_ADDR	(BCM2708_DMA_CHAN(4)+BCM2708_DMA_ADDR)
+
+#define BCM2708_DMA_TDMODE_LEN(w, h) ((h) << 16 | (w))
+
+struct bcm2708_dma_cb {
+	unsigned long info;
+	unsigned long src;
+	unsigned long dst;
+	unsigned long length;
+	unsigned long stride;
+	unsigned long next;
+	unsigned long pad[2];
+};
+struct scatterlist;
+
+extern int bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len);
+extern void bcm_dma_start(void __iomem *dma_chan_base,
+			  dma_addr_t control_block);
+extern void bcm_dma_wait_idle(void __iomem *dma_chan_base);
+extern bool bcm_dma_is_busy(void __iomem *dma_chan_base);
+extern int /*rc*/ bcm_dma_abort(void __iomem *dma_chan_base);
+
+/* When listing features we can ask for when allocating DMA channels give
+   those with higher priority smaller ordinal numbers */
+#define BCM_DMA_FEATURE_FAST_ORD 0
+#define BCM_DMA_FEATURE_BULK_ORD 1
+#define BCM_DMA_FEATURE_NORMAL_ORD 2
+#define BCM_DMA_FEATURE_LITE_ORD 3
+#define BCM_DMA_FEATURE_FAST	 (1<<BCM_DMA_FEATURE_FAST_ORD)
+#define BCM_DMA_FEATURE_BULK	 (1<<BCM_DMA_FEATURE_BULK_ORD)
+#define BCM_DMA_FEATURE_NORMAL	 (1<<BCM_DMA_FEATURE_NORMAL_ORD)
+#define BCM_DMA_FEATURE_LITE	 (1<<BCM_DMA_FEATURE_LITE_ORD)
+#define BCM_DMA_FEATURE_COUNT	 4
+
+/* return channel no or -ve error */
+extern int bcm_dma_chan_alloc(unsigned preferred_feature_set,
+			      void __iomem **out_dma_base, int *out_dma_irq);
+extern int bcm_dma_chan_free(int channel);
+
+
+#endif /* _MACH_BCM2708_DMA_H */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/entry-macro.S linux-rpi/arch/arm/mach-bcm2708/include/mach/entry-macro.S
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/entry-macro.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/entry-macro.S	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,69 @@
+/*
+ * arch/arm/mach-bcm2708/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for BCM2708 platforms
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <mach/hardware.h>
+
+		.macro	disable_fiq
+		.endm
+
+		.macro  get_irqnr_preamble, base, tmp
+		ldr	\base, =IO_ADDRESS(ARMCTRL_IC_BASE)
+		.endm
+
+		.macro  arch_ret_to_user, tmp1, tmp2
+		.endm
+
+		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+		/* get masked status */
+		ldr	\irqstat, [\base, #(ARM_IRQ_PEND0 - ARMCTRL_IC_BASE)]
+		mov	\irqnr, #(ARM_IRQ0_BASE + 31)
+		and	\tmp, \irqstat, #0x300		 @ save bits 8 and 9
+		/* clear bits 8 and 9, and test */
+		bics	\irqstat, \irqstat, #0x300
+		bne	1010f
+
+		tst	\tmp, #0x100
+		ldrne	\irqstat, [\base, #(ARM_IRQ_PEND1 - ARMCTRL_IC_BASE)]
+		movne \irqnr, #(ARM_IRQ1_BASE + 31)
+		@ Mask out the interrupts also present in PEND0 - see SW-5809
+		bicne \irqstat, #((1<<7) | (1<<9) | (1<<10))
+		bicne \irqstat, #((1<<18) | (1<<19))
+		bne	1010f
+
+		tst	\tmp, #0x200
+		ldrne \irqstat, [\base, #(ARM_IRQ_PEND2 - ARMCTRL_IC_BASE)]
+		movne \irqnr, #(ARM_IRQ2_BASE + 31)
+		@ Mask out the interrupts also present in PEND0 - see SW-5809
+		bicne \irqstat, #((1<<21) | (1<<22) | (1<<23) | (1<<24) | (1<<25))
+		bicne \irqstat, #((1<<30))
+		beq 1020f
+
+1010:
+		@ For non-zero x, LSB(x) = 31 - CLZ(x^(x-1))
+		@ N.B. CLZ is an ARM5 instruction.
+		sub	\tmp, \irqstat, #1
+		eor	\irqstat, \irqstat, \tmp
+		clz	\tmp, \irqstat
+		sub	\irqnr, \tmp
+
+1020:	@ EQ will be set if no irqs pending
+
+		.endm
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/frc.h linux-rpi/arch/arm/mach-bcm2708/include/mach/frc.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/frc.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/frc.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,38 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/timex.h
+ *
+ *  BCM2708 free running counter (timer)
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _MACH_FRC_H
+#define _MACH_FRC_H
+
+#define FRC_TICK_RATE		(1000000)
+
+/*! Free running counter incrementing at the CLOCK_TICK_RATE
+    (slightly faster than frc_clock_ticks63()
+ */
+extern unsigned long frc_clock_ticks32(void);
+
+/*! Free running counter incrementing at the CLOCK_TICK_RATE
+ *  Note - top bit should be ignored (see cnt32_to_63)
+ */
+extern unsigned long long frc_clock_ticks63(void);
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/gpio.h linux-rpi/arch/arm/mach-bcm2708/include/mach/gpio.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/gpio.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/gpio.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,17 @@
+/*
+ * arch/arm/mach-bcm2708/include/mach/gpio.h
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+#define BCM2708_NR_GPIOS 54 // number of gpio lines
+
+#define gpio_to_irq(x)	((x) + GPIO_IRQ_START)
+#define irq_to_gpio(x)	((x) - GPIO_IRQ_START)
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/hardware.h linux-rpi/arch/arm/mach-bcm2708/include/mach/hardware.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/hardware.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/hardware.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,28 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/hardware.h
+ *
+ *  This file contains the hardware definitions of the BCM2708 devices.
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include <asm/sizes.h>
+#include <mach/platform.h>
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/io.h linux-rpi/arch/arm/mach-bcm2708/include/mach/io.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/io.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/io.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,27 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/io.h
+ *
+ *  Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define __io(a)		__typesafe_io(a)
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/irqs.h linux-rpi/arch/arm/mach-bcm2708/include/mach/irqs.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/irqs.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/irqs.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,199 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/irqs.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 2003 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _BCM2708_IRQS_H_
+#define _BCM2708_IRQS_H_
+
+#include <mach/platform.h>
+
+/*
+ *  IRQ interrupts definitions are the same as the INT definitions
+ *  held within platform.h
+ */
+#define IRQ_ARMCTRL_START     0
+#define IRQ_TIMER0            (IRQ_ARMCTRL_START + INTERRUPT_TIMER0)
+#define IRQ_TIMER1            (IRQ_ARMCTRL_START + INTERRUPT_TIMER1)
+#define IRQ_TIMER2            (IRQ_ARMCTRL_START + INTERRUPT_TIMER2)
+#define IRQ_TIMER3            (IRQ_ARMCTRL_START + INTERRUPT_TIMER3)
+#define IRQ_CODEC0            (IRQ_ARMCTRL_START + INTERRUPT_CODEC0)
+#define IRQ_CODEC1            (IRQ_ARMCTRL_START + INTERRUPT_CODEC1)
+#define IRQ_CODEC2            (IRQ_ARMCTRL_START + INTERRUPT_CODEC2)
+#define IRQ_JPEG              (IRQ_ARMCTRL_START + INTERRUPT_JPEG)
+#define IRQ_ISP               (IRQ_ARMCTRL_START + INTERRUPT_ISP)
+#define IRQ_USB               (IRQ_ARMCTRL_START + INTERRUPT_USB)
+#define IRQ_3D                (IRQ_ARMCTRL_START + INTERRUPT_3D)
+#define IRQ_TRANSPOSER        (IRQ_ARMCTRL_START + INTERRUPT_TRANSPOSER)
+#define IRQ_MULTICORESYNC0    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC0)
+#define IRQ_MULTICORESYNC1    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC1)
+#define IRQ_MULTICORESYNC2    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC2)
+#define IRQ_MULTICORESYNC3    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC3)
+#define IRQ_DMA0              (IRQ_ARMCTRL_START + INTERRUPT_DMA0)
+#define IRQ_DMA1              (IRQ_ARMCTRL_START + INTERRUPT_DMA1)
+#define IRQ_DMA2              (IRQ_ARMCTRL_START + INTERRUPT_DMA2)
+#define IRQ_DMA3              (IRQ_ARMCTRL_START + INTERRUPT_DMA3)
+#define IRQ_DMA4              (IRQ_ARMCTRL_START + INTERRUPT_DMA4)
+#define IRQ_DMA5              (IRQ_ARMCTRL_START + INTERRUPT_DMA5)
+#define IRQ_DMA6              (IRQ_ARMCTRL_START + INTERRUPT_DMA6)
+#define IRQ_DMA7              (IRQ_ARMCTRL_START + INTERRUPT_DMA7)
+#define IRQ_DMA8              (IRQ_ARMCTRL_START + INTERRUPT_DMA8)
+#define IRQ_DMA9              (IRQ_ARMCTRL_START + INTERRUPT_DMA9)
+#define IRQ_DMA10             (IRQ_ARMCTRL_START + INTERRUPT_DMA10)
+#define IRQ_DMA11             (IRQ_ARMCTRL_START + INTERRUPT_DMA11)
+#define IRQ_DMA12             (IRQ_ARMCTRL_START + INTERRUPT_DMA12)
+#define IRQ_AUX               (IRQ_ARMCTRL_START + INTERRUPT_AUX)
+#define IRQ_ARM               (IRQ_ARMCTRL_START + INTERRUPT_ARM)
+#define IRQ_VPUDMA            (IRQ_ARMCTRL_START + INTERRUPT_VPUDMA)
+#define IRQ_HOSTPORT          (IRQ_ARMCTRL_START + INTERRUPT_HOSTPORT)
+#define IRQ_VIDEOSCALER       (IRQ_ARMCTRL_START + INTERRUPT_VIDEOSCALER)
+#define IRQ_CCP2TX            (IRQ_ARMCTRL_START + INTERRUPT_CCP2TX)
+#define IRQ_SDC               (IRQ_ARMCTRL_START + INTERRUPT_SDC)
+#define IRQ_DSI0              (IRQ_ARMCTRL_START + INTERRUPT_DSI0)
+#define IRQ_AVE               (IRQ_ARMCTRL_START + INTERRUPT_AVE)
+#define IRQ_CAM0              (IRQ_ARMCTRL_START + INTERRUPT_CAM0)
+#define IRQ_CAM1              (IRQ_ARMCTRL_START + INTERRUPT_CAM1)
+#define IRQ_HDMI0             (IRQ_ARMCTRL_START + INTERRUPT_HDMI0)
+#define IRQ_HDMI1             (IRQ_ARMCTRL_START + INTERRUPT_HDMI1)
+#define IRQ_PIXELVALVE1       (IRQ_ARMCTRL_START + INTERRUPT_PIXELVALVE1)
+#define IRQ_I2CSPISLV         (IRQ_ARMCTRL_START + INTERRUPT_I2CSPISLV)
+#define IRQ_DSI1              (IRQ_ARMCTRL_START + INTERRUPT_DSI1)
+#define IRQ_PWA0              (IRQ_ARMCTRL_START + INTERRUPT_PWA0)
+#define IRQ_PWA1              (IRQ_ARMCTRL_START + INTERRUPT_PWA1)
+#define IRQ_CPR               (IRQ_ARMCTRL_START + INTERRUPT_CPR)
+#define IRQ_SMI               (IRQ_ARMCTRL_START + INTERRUPT_SMI)
+#define IRQ_GPIO0             (IRQ_ARMCTRL_START + INTERRUPT_GPIO0)
+#define IRQ_GPIO1             (IRQ_ARMCTRL_START + INTERRUPT_GPIO1)
+#define IRQ_GPIO2             (IRQ_ARMCTRL_START + INTERRUPT_GPIO2)
+#define IRQ_GPIO3             (IRQ_ARMCTRL_START + INTERRUPT_GPIO3)
+#define IRQ_I2C               (IRQ_ARMCTRL_START + INTERRUPT_I2C)
+#define IRQ_SPI               (IRQ_ARMCTRL_START + INTERRUPT_SPI)
+#define IRQ_I2SPCM            (IRQ_ARMCTRL_START + INTERRUPT_I2SPCM)
+#define IRQ_SDIO              (IRQ_ARMCTRL_START + INTERRUPT_SDIO)
+#define IRQ_UART              (IRQ_ARMCTRL_START + INTERRUPT_UART)
+#define IRQ_SLIMBUS           (IRQ_ARMCTRL_START + INTERRUPT_SLIMBUS)
+#define IRQ_VEC               (IRQ_ARMCTRL_START + INTERRUPT_VEC)
+#define IRQ_CPG               (IRQ_ARMCTRL_START + INTERRUPT_CPG)
+#define IRQ_RNG               (IRQ_ARMCTRL_START + INTERRUPT_RNG)
+#define IRQ_ARASANSDIO        (IRQ_ARMCTRL_START + INTERRUPT_ARASANSDIO)
+#define IRQ_AVSPMON           (IRQ_ARMCTRL_START + INTERRUPT_AVSPMON)
+
+#define IRQ_ARM_TIMER         (IRQ_ARMCTRL_START + INTERRUPT_ARM_TIMER)
+#define IRQ_ARM_MAILBOX       (IRQ_ARMCTRL_START + INTERRUPT_ARM_MAILBOX)
+#define IRQ_ARM_DOORBELL_0    (IRQ_ARMCTRL_START + INTERRUPT_ARM_DOORBELL_0)
+#define IRQ_ARM_DOORBELL_1    (IRQ_ARMCTRL_START + INTERRUPT_ARM_DOORBELL_1)
+#define IRQ_VPU0_HALTED       (IRQ_ARMCTRL_START + INTERRUPT_VPU0_HALTED)
+#define IRQ_VPU1_HALTED       (IRQ_ARMCTRL_START + INTERRUPT_VPU1_HALTED)
+#define IRQ_ILLEGAL_TYPE0     (IRQ_ARMCTRL_START + INTERRUPT_ILLEGAL_TYPE0)
+#define IRQ_ILLEGAL_TYPE1     (IRQ_ARMCTRL_START + INTERRUPT_ILLEGAL_TYPE1)
+#define IRQ_PENDING1          (IRQ_ARMCTRL_START + INTERRUPT_PENDING1)
+#define IRQ_PENDING2          (IRQ_ARMCTRL_START + INTERRUPT_PENDING2)
+
+#define FIQ_START             HARD_IRQS
+
+/*
+ *  FIQ interrupts definitions are the same as the INT definitions.
+ */
+#define FIQ_TIMER0            (FIQ_START+INTERRUPT_TIMER0)
+#define FIQ_TIMER1            (FIQ_START+INTERRUPT_TIMER1)
+#define FIQ_TIMER2            (FIQ_START+INTERRUPT_TIMER2)
+#define FIQ_TIMER3            (FIQ_START+INTERRUPT_TIMER3)
+#define FIQ_CODEC0            (FIQ_START+INTERRUPT_CODEC0)
+#define FIQ_CODEC1            (FIQ_START+INTERRUPT_CODEC1)
+#define FIQ_CODEC2            (FIQ_START+INTERRUPT_CODEC2)
+#define FIQ_JPEG              (FIQ_START+INTERRUPT_JPEG)
+#define FIQ_ISP               (FIQ_START+INTERRUPT_ISP)
+#define FIQ_USB               (FIQ_START+INTERRUPT_USB)
+#define FIQ_3D                (FIQ_START+INTERRUPT_3D)
+#define FIQ_TRANSPOSER        (FIQ_START+INTERRUPT_TRANSPOSER)
+#define FIQ_MULTICORESYNC0    (FIQ_START+INTERRUPT_MULTICORESYNC0)
+#define FIQ_MULTICORESYNC1    (FIQ_START+INTERRUPT_MULTICORESYNC1)
+#define FIQ_MULTICORESYNC2    (FIQ_START+INTERRUPT_MULTICORESYNC2)
+#define FIQ_MULTICORESYNC3    (FIQ_START+INTERRUPT_MULTICORESYNC3)
+#define FIQ_DMA0              (FIQ_START+INTERRUPT_DMA0)
+#define FIQ_DMA1              (FIQ_START+INTERRUPT_DMA1)
+#define FIQ_DMA2              (FIQ_START+INTERRUPT_DMA2)
+#define FIQ_DMA3              (FIQ_START+INTERRUPT_DMA3)
+#define FIQ_DMA4              (FIQ_START+INTERRUPT_DMA4)
+#define FIQ_DMA5              (FIQ_START+INTERRUPT_DMA5)
+#define FIQ_DMA6              (FIQ_START+INTERRUPT_DMA6)
+#define FIQ_DMA7              (FIQ_START+INTERRUPT_DMA7)
+#define FIQ_DMA8              (FIQ_START+INTERRUPT_DMA8)
+#define FIQ_DMA9              (FIQ_START+INTERRUPT_DMA9)
+#define FIQ_DMA10             (FIQ_START+INTERRUPT_DMA10)
+#define FIQ_DMA11             (FIQ_START+INTERRUPT_DMA11)
+#define FIQ_DMA12             (FIQ_START+INTERRUPT_DMA12)
+#define FIQ_AUX               (FIQ_START+INTERRUPT_AUX)
+#define FIQ_ARM               (FIQ_START+INTERRUPT_ARM)
+#define FIQ_VPUDMA            (FIQ_START+INTERRUPT_VPUDMA)
+#define FIQ_HOSTPORT          (FIQ_START+INTERRUPT_HOSTPORT)
+#define FIQ_VIDEOSCALER       (FIQ_START+INTERRUPT_VIDEOSCALER)
+#define FIQ_CCP2TX            (FIQ_START+INTERRUPT_CCP2TX)
+#define FIQ_SDC               (FIQ_START+INTERRUPT_SDC)
+#define FIQ_DSI0              (FIQ_START+INTERRUPT_DSI0)
+#define FIQ_AVE               (FIQ_START+INTERRUPT_AVE)
+#define FIQ_CAM0              (FIQ_START+INTERRUPT_CAM0)
+#define FIQ_CAM1              (FIQ_START+INTERRUPT_CAM1)
+#define FIQ_HDMI0             (FIQ_START+INTERRUPT_HDMI0)
+#define FIQ_HDMI1             (FIQ_START+INTERRUPT_HDMI1)
+#define FIQ_PIXELVALVE1       (FIQ_START+INTERRUPT_PIXELVALVE1)
+#define FIQ_I2CSPISLV         (FIQ_START+INTERRUPT_I2CSPISLV)
+#define FIQ_DSI1              (FIQ_START+INTERRUPT_DSI1)
+#define FIQ_PWA0              (FIQ_START+INTERRUPT_PWA0)
+#define FIQ_PWA1              (FIQ_START+INTERRUPT_PWA1)
+#define FIQ_CPR               (FIQ_START+INTERRUPT_CPR)
+#define FIQ_SMI               (FIQ_START+INTERRUPT_SMI)
+#define FIQ_GPIO0             (FIQ_START+INTERRUPT_GPIO0)
+#define FIQ_GPIO1             (FIQ_START+INTERRUPT_GPIO1)
+#define FIQ_GPIO2             (FIQ_START+INTERRUPT_GPIO2)
+#define FIQ_GPIO3             (FIQ_START+INTERRUPT_GPIO3)
+#define FIQ_I2C               (FIQ_START+INTERRUPT_I2C)
+#define FIQ_SPI               (FIQ_START+INTERRUPT_SPI)
+#define FIQ_I2SPCM            (FIQ_START+INTERRUPT_I2SPCM)
+#define FIQ_SDIO              (FIQ_START+INTERRUPT_SDIO)
+#define FIQ_UART              (FIQ_START+INTERRUPT_UART)
+#define FIQ_SLIMBUS           (FIQ_START+INTERRUPT_SLIMBUS)
+#define FIQ_VEC               (FIQ_START+INTERRUPT_VEC)
+#define FIQ_CPG               (FIQ_START+INTERRUPT_CPG)
+#define FIQ_RNG               (FIQ_START+INTERRUPT_RNG)
+#define FIQ_ARASANSDIO        (FIQ_START+INTERRUPT_ARASANSDIO)
+#define FIQ_AVSPMON           (FIQ_START+INTERRUPT_AVSPMON)
+
+#define FIQ_ARM_TIMER         (FIQ_START+INTERRUPT_ARM_TIMER)
+#define FIQ_ARM_MAILBOX       (FIQ_START+INTERRUPT_ARM_MAILBOX)
+#define FIQ_ARM_DOORBELL_0    (FIQ_START+INTERRUPT_ARM_DOORBELL_0)
+#define FIQ_ARM_DOORBELL_1    (FIQ_START+INTERRUPT_ARM_DOORBELL_1)
+#define FIQ_VPU0_HALTED       (FIQ_START+INTERRUPT_VPU0_HALTED)
+#define FIQ_VPU1_HALTED       (FIQ_START+INTERRUPT_VPU1_HALTED)
+#define FIQ_ILLEGAL_TYPE0     (FIQ_START+INTERRUPT_ILLEGAL_TYPE0)
+#define FIQ_ILLEGAL_TYPE1     (FIQ_START+INTERRUPT_ILLEGAL_TYPE1)
+#define FIQ_PENDING1          (FIQ_START+INTERRUPT_PENDING1)
+#define FIQ_PENDING2          (FIQ_START+INTERRUPT_PENDING2)
+
+#define HARD_IRQS	      (64 + 21)
+#define FIQ_IRQS        (64 + 21)
+#define GPIO_IRQ_START  (HARD_IRQS + FIQ_IRQS)
+#define GPIO_IRQS	      (32*5)
+#define SPARE_ALLOC_IRQS      64
+#define BCM2708_ALLOC_IRQS    (HARD_IRQS+FIQ_IRQS+GPIO_IRQS+SPARE_ALLOC_IRQS)
+#define FREE_IRQS             128
+#define NR_IRQS               (BCM2708_ALLOC_IRQS+FREE_IRQS)
+
+#endif /* _BCM2708_IRQS_H_ */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/memory.h linux-rpi/arch/arm/mach-bcm2708/include/mach/memory.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/memory.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/memory.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,57 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/memory.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+/* Memory overview:
+
+   [ARMcore] <--virtual addr-->
+   [ARMmmu] <--physical addr-->
+   [GERTmap] <--bus add-->
+   [VCperiph]
+
+*/
+
+/*
+ * Physical DRAM offset.
+ */
+#define BCM_PLAT_PHYS_OFFSET	UL(0x00000000)
+#define VC_ARMMEM_OFFSET	UL(0x00000000)   /* offset in VC of ARM memory */
+
+#ifdef CONFIG_BCM2708_NOL2CACHE
+ #define _REAL_BUS_OFFSET UL(0xC0000000)   /* don't use L1 or L2 caches */
+#else
+ #define _REAL_BUS_OFFSET UL(0x40000000)   /* use L2 cache */
+#endif
+
+/* We're using the memory at 64M in the VideoCore for Linux - this adjustment
+ * will provide the offset into this area as well as setting the bits that
+ * stop the L1 and L2 cache from being used
+ *
+ * WARNING: this only works because the ARM is given memory at a fixed location
+ *          (ARMMEM_OFFSET)
+ */
+#define BUS_OFFSET          (VC_ARMMEM_OFFSET + _REAL_BUS_OFFSET)
+#define __virt_to_bus(x)    ((x) + (BUS_OFFSET - PAGE_OFFSET))
+#define __bus_to_virt(x)    ((x) - (BUS_OFFSET - PAGE_OFFSET))
+#define __pfn_to_bus(x)     (__pfn_to_phys(x) + (BUS_OFFSET - BCM_PLAT_PHYS_OFFSET))
+#define __bus_to_pfn(x)     __phys_to_pfn((x) - (BUS_OFFSET - BCM_PLAT_PHYS_OFFSET))
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/platform.h linux-rpi/arch/arm/mach-bcm2708/include/mach/platform.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/platform.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/platform.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,228 @@
+/*
+ * arch/arm/mach-bcm2708/include/mach/platform.h
+ *
+ * Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _BCM2708_PLATFORM_H
+#define _BCM2708_PLATFORM_H
+
+
+/* macros to get at IO space when running virtually */
+#define IO_ADDRESS(x)	(((x) & 0x0fffffff) + (((x) >> 4) & 0x0f000000) + 0xf0000000)
+
+#define __io_address(n)     IOMEM(IO_ADDRESS(n))
+
+
+/*
+ *  SDRAM
+ */
+#define BCM2708_SDRAM_BASE           0x00000000
+
+/*
+ *  Logic expansion modules
+ *
+ */
+
+
+/* ------------------------------------------------------------------------
+ *  BCM2708 ARMCTRL Registers
+ * ------------------------------------------------------------------------
+ */
+
+#define HW_REGISTER_RW(addr) (addr)
+#define HW_REGISTER_RO(addr) (addr)
+
+#include "arm_control.h"
+#undef ARM_BASE
+
+/*
+ * Definitions and addresses for the ARM CONTROL logic
+ * This file is manually generated.
+ */
+
+#define BCM2708_PERI_BASE        0x20000000
+#define IC0_BASE                 (BCM2708_PERI_BASE + 0x2000)
+#define ST_BASE                  (BCM2708_PERI_BASE + 0x3000)   /* System Timer */
+#define MPHI_BASE		 (BCM2708_PERI_BASE + 0x6000)	/* Message -based Parallel Host Interface */
+#define DMA_BASE		 (BCM2708_PERI_BASE + 0x7000)	/* DMA controller */
+#define ARM_BASE                 (BCM2708_PERI_BASE + 0xB000)	 /* BCM2708 ARM control block */
+#define PM_BASE			 (BCM2708_PERI_BASE + 0x100000) /* Power Management, Reset controller and Watchdog registers */
+#define PCM_CLOCK_BASE           (BCM2708_PERI_BASE + 0x101098) /* PCM Clock */
+#define RNG_BASE                 (BCM2708_PERI_BASE + 0x104000) /* Hardware RNG */
+#define GPIO_BASE                (BCM2708_PERI_BASE + 0x200000) /* GPIO */
+#define UART0_BASE               (BCM2708_PERI_BASE + 0x201000)	/* Uart 0 */
+#define MMCI0_BASE               (BCM2708_PERI_BASE + 0x202000) /* MMC interface */
+#define I2S_BASE                 (BCM2708_PERI_BASE + 0x203000) /* I2S */
+#define SPI0_BASE		 (BCM2708_PERI_BASE + 0x204000) /* SPI0 */
+#define BSC0_BASE		 (BCM2708_PERI_BASE + 0x205000) /* BSC0 I2C/TWI */
+#define UART1_BASE               (BCM2708_PERI_BASE + 0x215000) /* Uart 1 */
+#define EMMC_BASE                (BCM2708_PERI_BASE + 0x300000) /* eMMC interface */
+#define SMI_BASE		 (BCM2708_PERI_BASE + 0x600000) /* SMI */
+#define BSC1_BASE		 (BCM2708_PERI_BASE + 0x804000) /* BSC1 I2C/TWI */
+#define USB_BASE                 (BCM2708_PERI_BASE + 0x980000) /* DTC_OTG USB controller */
+#define MCORE_BASE               (BCM2708_PERI_BASE + 0x0000)   /* Fake frame buffer device (actually the multicore sync block*/
+
+#define ARMCTRL_BASE             (ARM_BASE + 0x000)
+#define ARMCTRL_IC_BASE          (ARM_BASE + 0x200)           /* ARM interrupt controller */
+#define ARMCTRL_TIMER0_1_BASE    (ARM_BASE + 0x400)           /* Timer 0 and 1 */
+#define ARMCTRL_0_SBM_BASE       (ARM_BASE + 0x800)           /* User 0 (ARM)'s Semaphores Doorbells and Mailboxes */
+
+
+/*
+ * Interrupt assignments
+ */
+
+#define ARM_IRQ1_BASE                  0
+#define INTERRUPT_TIMER0               (ARM_IRQ1_BASE + 0)
+#define INTERRUPT_TIMER1               (ARM_IRQ1_BASE + 1)
+#define INTERRUPT_TIMER2               (ARM_IRQ1_BASE + 2)
+#define INTERRUPT_TIMER3               (ARM_IRQ1_BASE + 3)
+#define INTERRUPT_CODEC0               (ARM_IRQ1_BASE + 4)
+#define INTERRUPT_CODEC1               (ARM_IRQ1_BASE + 5)
+#define INTERRUPT_CODEC2               (ARM_IRQ1_BASE + 6)
+#define INTERRUPT_VC_JPEG              (ARM_IRQ1_BASE + 7)
+#define INTERRUPT_ISP                  (ARM_IRQ1_BASE + 8)
+#define INTERRUPT_VC_USB               (ARM_IRQ1_BASE + 9)
+#define INTERRUPT_VC_3D                (ARM_IRQ1_BASE + 10)
+#define INTERRUPT_TRANSPOSER           (ARM_IRQ1_BASE + 11)
+#define INTERRUPT_MULTICORESYNC0       (ARM_IRQ1_BASE + 12)
+#define INTERRUPT_MULTICORESYNC1       (ARM_IRQ1_BASE + 13)
+#define INTERRUPT_MULTICORESYNC2       (ARM_IRQ1_BASE + 14)
+#define INTERRUPT_MULTICORESYNC3       (ARM_IRQ1_BASE + 15)
+#define INTERRUPT_DMA0                 (ARM_IRQ1_BASE + 16)
+#define INTERRUPT_DMA1                 (ARM_IRQ1_BASE + 17)
+#define INTERRUPT_VC_DMA2              (ARM_IRQ1_BASE + 18)
+#define INTERRUPT_VC_DMA3              (ARM_IRQ1_BASE + 19)
+#define INTERRUPT_DMA4                 (ARM_IRQ1_BASE + 20)
+#define INTERRUPT_DMA5                 (ARM_IRQ1_BASE + 21)
+#define INTERRUPT_DMA6                 (ARM_IRQ1_BASE + 22)
+#define INTERRUPT_DMA7                 (ARM_IRQ1_BASE + 23)
+#define INTERRUPT_DMA8                 (ARM_IRQ1_BASE + 24)
+#define INTERRUPT_DMA9                 (ARM_IRQ1_BASE + 25)
+#define INTERRUPT_DMA10                (ARM_IRQ1_BASE + 26)
+#define INTERRUPT_DMA11                (ARM_IRQ1_BASE + 27)
+#define INTERRUPT_DMA12                (ARM_IRQ1_BASE + 28)
+#define INTERRUPT_AUX                (ARM_IRQ1_BASE + 29)
+#define INTERRUPT_ARM                  (ARM_IRQ1_BASE + 30)
+#define INTERRUPT_VPUDMA               (ARM_IRQ1_BASE + 31)
+
+#define ARM_IRQ2_BASE                  32
+#define INTERRUPT_HOSTPORT             (ARM_IRQ2_BASE + 0)
+#define INTERRUPT_VIDEOSCALER          (ARM_IRQ2_BASE + 1)
+#define INTERRUPT_CCP2TX               (ARM_IRQ2_BASE + 2)
+#define INTERRUPT_SDC                  (ARM_IRQ2_BASE + 3)
+#define INTERRUPT_DSI0                 (ARM_IRQ2_BASE + 4)
+#define INTERRUPT_AVE                  (ARM_IRQ2_BASE + 5)
+#define INTERRUPT_CAM0                 (ARM_IRQ2_BASE + 6)
+#define INTERRUPT_CAM1                 (ARM_IRQ2_BASE + 7)
+#define INTERRUPT_HDMI0                (ARM_IRQ2_BASE + 8)
+#define INTERRUPT_HDMI1                (ARM_IRQ2_BASE + 9)
+#define INTERRUPT_PIXELVALVE1          (ARM_IRQ2_BASE + 10)
+#define INTERRUPT_I2CSPISLV            (ARM_IRQ2_BASE + 11)
+#define INTERRUPT_DSI1                 (ARM_IRQ2_BASE + 12)
+#define INTERRUPT_PWA0                 (ARM_IRQ2_BASE + 13)
+#define INTERRUPT_PWA1                 (ARM_IRQ2_BASE + 14)
+#define INTERRUPT_CPR                  (ARM_IRQ2_BASE + 15)
+#define INTERRUPT_SMI                  (ARM_IRQ2_BASE + 16)
+#define INTERRUPT_GPIO0                (ARM_IRQ2_BASE + 17)
+#define INTERRUPT_GPIO1                (ARM_IRQ2_BASE + 18)
+#define INTERRUPT_GPIO2                (ARM_IRQ2_BASE + 19)
+#define INTERRUPT_GPIO3                (ARM_IRQ2_BASE + 20)
+#define INTERRUPT_VC_I2C               (ARM_IRQ2_BASE + 21)
+#define INTERRUPT_VC_SPI               (ARM_IRQ2_BASE + 22)
+#define INTERRUPT_VC_I2SPCM            (ARM_IRQ2_BASE + 23)
+#define INTERRUPT_VC_SDIO              (ARM_IRQ2_BASE + 24)
+#define INTERRUPT_VC_UART              (ARM_IRQ2_BASE + 25)
+#define INTERRUPT_SLIMBUS              (ARM_IRQ2_BASE + 26)
+#define INTERRUPT_VEC                  (ARM_IRQ2_BASE + 27)
+#define INTERRUPT_CPG                  (ARM_IRQ2_BASE + 28)
+#define INTERRUPT_RNG                  (ARM_IRQ2_BASE + 29)
+#define INTERRUPT_VC_ARASANSDIO        (ARM_IRQ2_BASE + 30)
+#define INTERRUPT_AVSPMON              (ARM_IRQ2_BASE + 31)
+
+#define ARM_IRQ0_BASE                  64
+#define INTERRUPT_ARM_TIMER            (ARM_IRQ0_BASE + 0)
+#define INTERRUPT_ARM_MAILBOX          (ARM_IRQ0_BASE + 1)
+#define INTERRUPT_ARM_DOORBELL_0       (ARM_IRQ0_BASE + 2)
+#define INTERRUPT_ARM_DOORBELL_1       (ARM_IRQ0_BASE + 3)
+#define INTERRUPT_VPU0_HALTED          (ARM_IRQ0_BASE + 4)
+#define INTERRUPT_VPU1_HALTED          (ARM_IRQ0_BASE + 5)
+#define INTERRUPT_ILLEGAL_TYPE0        (ARM_IRQ0_BASE + 6)
+#define INTERRUPT_ILLEGAL_TYPE1        (ARM_IRQ0_BASE + 7)
+#define INTERRUPT_PENDING1             (ARM_IRQ0_BASE + 8)
+#define INTERRUPT_PENDING2             (ARM_IRQ0_BASE + 9)
+#define INTERRUPT_JPEG                 (ARM_IRQ0_BASE + 10)
+#define INTERRUPT_USB                  (ARM_IRQ0_BASE + 11)
+#define INTERRUPT_3D                   (ARM_IRQ0_BASE + 12)
+#define INTERRUPT_DMA2                 (ARM_IRQ0_BASE + 13)
+#define INTERRUPT_DMA3                 (ARM_IRQ0_BASE + 14)
+#define INTERRUPT_I2C                  (ARM_IRQ0_BASE + 15)
+#define INTERRUPT_SPI                  (ARM_IRQ0_BASE + 16)
+#define INTERRUPT_I2SPCM               (ARM_IRQ0_BASE + 17)
+#define INTERRUPT_SDIO                 (ARM_IRQ0_BASE + 18)
+#define INTERRUPT_UART                 (ARM_IRQ0_BASE + 19)
+#define INTERRUPT_ARASANSDIO           (ARM_IRQ0_BASE + 20)
+
+#define MAXIRQNUM                      (32 + 32 + 20)
+#define MAXFIQNUM                      (32 + 32 + 20)
+
+#define MAX_TIMER                       2
+#define MAX_PERIOD                      699050
+#define TICKS_PER_uSEC                  1
+
+/*
+ *  These are useconds NOT ticks.
+ *
+ */
+#define mSEC_1                          1000
+#define mSEC_5                          (mSEC_1 * 5)
+#define mSEC_10                         (mSEC_1 * 10)
+#define mSEC_25                         (mSEC_1 * 25)
+#define SEC_1                           (mSEC_1 * 1000)
+
+/*
+ * Watchdog
+ */
+#define PM_RSTC			       (PM_BASE+0x1c)
+#define PM_RSTS			       (PM_BASE+0x20)
+#define PM_WDOG			       (PM_BASE+0x24)
+
+#define PM_WDOG_RESET                                         0000000000
+#define PM_PASSWORD		       0x5a000000
+#define PM_WDOG_TIME_SET	       0x000fffff
+#define PM_RSTC_WRCFG_CLR              0xffffffcf
+#define PM_RSTC_WRCFG_SET              0x00000030
+#define PM_RSTC_WRCFG_FULL_RESET       0x00000020
+#define PM_RSTC_RESET                  0x00000102
+
+#define PM_RSTS_HADPOR_SET                                 0x00001000
+#define PM_RSTS_HADSRH_SET                                 0x00000400
+#define PM_RSTS_HADSRF_SET                                 0x00000200
+#define PM_RSTS_HADSRQ_SET                                 0x00000100
+#define PM_RSTS_HADWRH_SET                                 0x00000040
+#define PM_RSTS_HADWRF_SET                                 0x00000020
+#define PM_RSTS_HADWRQ_SET                                 0x00000010
+#define PM_RSTS_HADDRH_SET                                 0x00000004
+#define PM_RSTS_HADDRF_SET                                 0x00000002
+#define PM_RSTS_HADDRQ_SET                                 0x00000001
+
+#define UART0_CLOCK      3000000
+
+#endif
+
+/* END */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/power.h linux-rpi/arch/arm/mach-bcm2708/include/mach/power.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/power.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/power.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,26 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/power.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This device provides a shared mechanism for controlling the power to
+ * VideoCore subsystems.
+ */
+
+#ifndef _MACH_BCM2708_POWER_H
+#define _MACH_BCM2708_POWER_H
+
+#include <linux/types.h>
+#include <mach/arm_power.h>
+
+typedef unsigned int BCM_POWER_HANDLE_T;
+
+extern int bcm_power_open(BCM_POWER_HANDLE_T *handle);
+extern int bcm_power_request(BCM_POWER_HANDLE_T handle, uint32_t request);
+extern int bcm_power_close(BCM_POWER_HANDLE_T handle);
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/system.h linux-rpi/arch/arm/mach-bcm2708/include/mach/system.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/system.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/system.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,38 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/system.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 2003 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H
+
+#include <linux/io.h>
+#include <mach/hardware.h>
+#include <mach/platform.h>
+
+static inline void arch_idle(void)
+{
+	/*
+	 * This should do all the clock switching
+	 * and wait for interrupt tricks
+	 */
+	cpu_do_idle();
+}
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/timex.h linux-rpi/arch/arm/mach-bcm2708/include/mach/timex.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/timex.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/timex.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,23 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/timex.h
+ *
+ *  BCM2708 sysem clock frequency
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define CLOCK_TICK_RATE		(1000000)
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/uncompress.h linux-rpi/arch/arm/mach-bcm2708/include/mach/uncompress.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/uncompress.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/uncompress.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,84 @@
+/*
+ *  arch/arm/mach-bcn2708/include/mach/uncompress.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/io.h>
+#include <linux/amba/serial.h>
+#include <mach/hardware.h>
+
+#define UART_BAUD 115200
+
+#define BCM2708_UART_DR   __io(UART0_BASE + UART01x_DR)
+#define BCM2708_UART_FR   __io(UART0_BASE + UART01x_FR)
+#define BCM2708_UART_IBRD __io(UART0_BASE + UART011_IBRD)
+#define BCM2708_UART_FBRD __io(UART0_BASE + UART011_FBRD)
+#define BCM2708_UART_LCRH __io(UART0_BASE + UART011_LCRH)
+#define BCM2708_UART_CR   __io(UART0_BASE + UART011_CR)
+
+/*
+ * This does not append a newline
+ */
+static inline void putc(int c)
+{
+	while (__raw_readl(BCM2708_UART_FR) & UART01x_FR_TXFF)
+		barrier();
+
+	__raw_writel(c, BCM2708_UART_DR);
+}
+
+static inline void flush(void)
+{
+	int fr;
+
+	do {
+		fr = __raw_readl(BCM2708_UART_FR);
+		barrier();
+	} while ((fr & (UART011_FR_TXFE | UART01x_FR_BUSY)) != UART011_FR_TXFE);
+}
+
+static inline void arch_decomp_setup(void)
+{
+	int temp, div, rem, frac;
+
+	temp = 16 * UART_BAUD;
+	div = UART0_CLOCK / temp;
+	rem = UART0_CLOCK % temp;
+	temp = (8 * rem) / UART_BAUD;
+	frac = (temp >> 1) + (temp & 1);
+
+	/* Make sure the UART is disabled before we start */
+	__raw_writel(0, BCM2708_UART_CR);
+
+	/* Set the baud rate */
+	__raw_writel(div, BCM2708_UART_IBRD);
+	__raw_writel(frac, BCM2708_UART_FBRD);
+
+	/* Set the UART to 8n1, FIFO enabled */
+	__raw_writel(UART01x_LCRH_WLEN_8 | UART01x_LCRH_FEN, BCM2708_UART_LCRH);
+
+	/* Enable the UART */
+	__raw_writel(UART01x_CR_UARTEN | UART011_CR_TXE | UART011_CR_RXE,
+			BCM2708_UART_CR);
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_wdog()
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vcio.h linux-rpi/arch/arm/mach-bcm2708/include/mach/vcio.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vcio.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/vcio.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,165 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/vcio.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef _MACH_BCM2708_VCIO_H
+#define _MACH_BCM2708_VCIO_H
+
+/* Routines to handle I/O via the VideoCore "ARM control" registers
+ * (semaphores, doorbells, mailboxes)
+ */
+
+#define BCM_VCIO_DRIVER_NAME "bcm2708_vcio"
+
+/* Constants shared with the ARM identifying separate mailbox channels */
+#define MBOX_CHAN_POWER    0 /* for use by the power management interface */
+#define MBOX_CHAN_FB       1 /* for use by the frame buffer */
+#define MBOX_CHAN_VCHIQ    3 /* for use by the VCHIQ interface */
+#define MBOX_CHAN_PROPERTY 8 /* for use by the property channel */
+#define MBOX_CHAN_COUNT    9
+
+enum {
+	VCMSG_PROCESS_REQUEST 		= 0x00000000
+};
+enum {
+	VCMSG_REQUEST_SUCCESSFUL 	= 0x80000000,
+	VCMSG_REQUEST_FAILED 		= 0x80000001
+};
+/* Mailbox property tags */
+enum {
+	VCMSG_PROPERTY_END               = 0x00000000,
+	VCMSG_GET_FIRMWARE_REVISION      = 0x00000001,
+	VCMSG_GET_BOARD_MODEL            = 0x00010001,
+	VCMSG_GET_BOARD_REVISION	 = 0x00010002,
+	VCMSG_GET_BOARD_MAC_ADDRESS	 = 0x00010003,
+	VCMSG_GET_BOARD_SERIAL		 = 0x00010004,
+	VCMSG_GET_ARM_MEMORY		 = 0x00010005,
+	VCMSG_GET_VC_MEMORY		 = 0x00010006,
+	VCMSG_GET_CLOCKS		 = 0x00010007,
+	VCMSG_GET_COMMAND_LINE           = 0x00050001,
+	VCMSG_GET_DMA_CHANNELS           = 0x00060001,
+	VCMSG_GET_POWER_STATE            = 0x00020001,
+	VCMSG_GET_TIMING		 = 0x00020002,
+	VCMSG_SET_POWER_STATE            = 0x00028001,
+	VCMSG_GET_CLOCK_STATE            = 0x00030001,
+	VCMSG_SET_CLOCK_STATE            = 0x00038001,
+	VCMSG_GET_CLOCK_RATE             = 0x00030002,
+	VCMSG_SET_CLOCK_RATE             = 0x00038002,
+	VCMSG_GET_VOLTAGE                = 0x00030003,
+	VCMSG_SET_VOLTAGE                = 0x00038003,
+	VCMSG_GET_MAX_CLOCK              = 0x00030004,
+	VCMSG_GET_MAX_VOLTAGE            = 0x00030005,
+	VCMSG_GET_TEMPERATURE            = 0x00030006,
+	VCMSG_GET_MIN_CLOCK              = 0x00030007,
+	VCMSG_GET_MIN_VOLTAGE            = 0x00030008,
+	VCMSG_GET_TURBO                  = 0x00030009,
+	VCMSG_GET_MAX_TEMPERATURE        = 0x0003000a,
+	VCMSG_GET_STC                    = 0x0003000b,
+	VCMSG_SET_TURBO                  = 0x00038009,
+	VCMSG_SET_ALLOCATE_MEM           = 0x0003000c,
+	VCMSG_SET_LOCK_MEM               = 0x0003000d,
+	VCMSG_SET_UNLOCK_MEM             = 0x0003000e,
+	VCMSG_SET_RELEASE_MEM            = 0x0003000f,
+	VCMSG_SET_EXECUTE_CODE           = 0x00030010,
+	VCMSG_SET_EXECUTE_QPU            = 0x00030011,
+	VCMSG_SET_ENABLE_QPU             = 0x00030012,
+	VCMSG_GET_RESOURCE_HANDLE        = 0x00030014,
+	VCMSG_GET_EDID_BLOCK             = 0x00030020,
+	VCMSG_GET_CUSTOMER_OTP           = 0x00030021,
+	VCMSG_SET_CUSTOMER_OTP           = 0x00038021,
+	VCMSG_SET_ALLOCATE_BUFFER        = 0x00040001,
+	VCMSG_SET_RELEASE_BUFFER         = 0x00048001,
+	VCMSG_SET_BLANK_SCREEN           = 0x00040002,
+	VCMSG_TST_BLANK_SCREEN           = 0x00044002,
+	VCMSG_GET_PHYSICAL_WIDTH_HEIGHT  = 0x00040003,
+	VCMSG_TST_PHYSICAL_WIDTH_HEIGHT  = 0x00044003,
+	VCMSG_SET_PHYSICAL_WIDTH_HEIGHT  = 0x00048003,
+	VCMSG_GET_VIRTUAL_WIDTH_HEIGHT   = 0x00040004,
+	VCMSG_TST_VIRTUAL_WIDTH_HEIGHT   = 0x00044004,
+	VCMSG_SET_VIRTUAL_WIDTH_HEIGHT   = 0x00048004,
+	VCMSG_GET_DEPTH                  = 0x00040005,
+	VCMSG_TST_DEPTH                  = 0x00044005,
+	VCMSG_SET_DEPTH                  = 0x00048005,
+	VCMSG_GET_PIXEL_ORDER            = 0x00040006,
+	VCMSG_TST_PIXEL_ORDER            = 0x00044006,
+	VCMSG_SET_PIXEL_ORDER            = 0x00048006,
+	VCMSG_GET_ALPHA_MODE             = 0x00040007,
+	VCMSG_TST_ALPHA_MODE             = 0x00044007,
+	VCMSG_SET_ALPHA_MODE             = 0x00048007,
+	VCMSG_GET_PITCH                  = 0x00040008,
+	VCMSG_TST_PITCH                  = 0x00044008,
+	VCMSG_SET_PITCH                  = 0x00048008,
+	VCMSG_GET_VIRTUAL_OFFSET         = 0x00040009,
+	VCMSG_TST_VIRTUAL_OFFSET         = 0x00044009,
+	VCMSG_SET_VIRTUAL_OFFSET         = 0x00048009,
+	VCMSG_GET_OVERSCAN               = 0x0004000a,
+	VCMSG_TST_OVERSCAN               = 0x0004400a,
+	VCMSG_SET_OVERSCAN               = 0x0004800a,
+	VCMSG_GET_PALETTE                = 0x0004000b,
+	VCMSG_TST_PALETTE                = 0x0004400b,
+	VCMSG_SET_PALETTE                = 0x0004800b,
+	VCMSG_GET_LAYER                  = 0x0004000c,
+	VCMSG_TST_LAYER                  = 0x0004400c,
+	VCMSG_SET_LAYER                  = 0x0004800c,
+	VCMSG_GET_TRANSFORM              = 0x0004000d,
+	VCMSG_TST_TRANSFORM              = 0x0004400d,
+	VCMSG_SET_TRANSFORM              = 0x0004800d,
+	VCMSG_TST_VSYNC                  = 0x0004400e,
+	VCMSG_SET_VSYNC                  = 0x0004800e,
+	VCMSG_SET_CURSOR_INFO            = 0x00008010,
+	VCMSG_SET_CURSOR_STATE           = 0x00008011,
+};
+
+extern int /*rc*/ bcm_mailbox_read(unsigned chan, uint32_t *data28);
+extern int /*rc*/ bcm_mailbox_write(unsigned chan, uint32_t data28);
+extern int /*rc*/ bcm_mailbox_property(void *data, int size);
+
+#include <linux/ioctl.h>
+
+/*
+ * The major device number. We can't rely on dynamic
+ * registration any more, because ioctls need to know
+ * it.
+ */
+#define MAJOR_NUM 100
+
+/*
+ * Set the message of the device driver
+ */
+#define IOCTL_MBOX_PROPERTY _IOWR(MAJOR_NUM, 0, char *)
+/*
+ * _IOWR means that we're creating an ioctl command
+ * number for passing information from a user process
+ * to the kernel module and from the kernel module to user process
+ *
+ * The first arguments, MAJOR_NUM, is the major device
+ * number we're using.
+ *
+ * The second argument is the number of the command
+ * (there could be several with different meanings).
+ *
+ * The third argument is the type we want to get from
+ * the process to the kernel.
+ */
+
+/*
+ * The name of the device file
+ */
+#define DEVICE_FILE_NAME "vcio"
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vc_mem.h linux-rpi/arch/arm/mach-bcm2708/include/mach/vc_mem.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vc_mem.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/vc_mem.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,35 @@
+/*****************************************************************************
+* Copyright 2010 - 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#if !defined( VC_MEM_H )
+#define VC_MEM_H
+
+#include <linux/ioctl.h>
+
+#define VC_MEM_IOC_MAGIC  'v'
+
+#define VC_MEM_IOC_MEM_PHYS_ADDR    _IOR( VC_MEM_IOC_MAGIC, 0, unsigned long )
+#define VC_MEM_IOC_MEM_SIZE         _IOR( VC_MEM_IOC_MAGIC, 1, unsigned int )
+#define VC_MEM_IOC_MEM_BASE         _IOR( VC_MEM_IOC_MAGIC, 2, unsigned int )
+#define VC_MEM_IOC_MEM_LOAD         _IOR( VC_MEM_IOC_MAGIC, 3, unsigned int )
+
+#if defined( __KERNEL__ )
+#define VC_MEM_TO_ARM_ADDR_MASK 0x3FFFFFFF
+
+extern unsigned long mm_vc_mem_phys_addr;
+extern unsigned int  mm_vc_mem_size;
+extern int vc_mem_get_current_size( void );
+#endif
+
+#endif  /* VC_MEM_H */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vc_sm_defs.h linux-rpi/arch/arm/mach-bcm2708/include/mach/vc_sm_defs.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vc_sm_defs.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/vc_sm_defs.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,181 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#ifndef __VC_SM_DEFS_H__INCLUDED__
+#define __VC_SM_DEFS_H__INCLUDED__
+
+/* FourCC code used for VCHI connection */
+#define VC_SM_SERVER_NAME MAKE_FOURCC("SMEM")
+
+/* Maximum message length */
+#define VC_SM_MAX_MSG_LEN (sizeof(VC_SM_MSG_UNION_T) + \
+	sizeof(VC_SM_MSG_HDR_T))
+#define VC_SM_MAX_RSP_LEN (sizeof(VC_SM_MSG_UNION_T))
+
+/* Resource name maximum size */
+#define VC_SM_RESOURCE_NAME 32
+
+/* All message types supported for HOST->VC direction */
+typedef enum {
+	/* Allocate shared memory block */
+	VC_SM_MSG_TYPE_ALLOC,
+	/* Lock allocated shared memory block */
+	VC_SM_MSG_TYPE_LOCK,
+	/* Unlock allocated shared memory block */
+	VC_SM_MSG_TYPE_UNLOCK,
+	/* Unlock allocated shared memory block, do not answer command */
+	VC_SM_MSG_TYPE_UNLOCK_NOANS,
+	/* Free shared memory block */
+	VC_SM_MSG_TYPE_FREE,
+	/* Resize a shared memory block */
+	VC_SM_MSG_TYPE_RESIZE,
+	/* Walk the allocated shared memory block(s) */
+	VC_SM_MSG_TYPE_WALK_ALLOC,
+
+	/* A previously applied action will need to be reverted */
+	VC_SM_MSG_TYPE_ACTION_CLEAN,
+	VC_SM_MSG_TYPE_MAX
+} VC_SM_MSG_TYPE;
+
+/* Type of memory to be allocated */
+typedef enum {
+	VC_SM_ALLOC_CACHED,
+	VC_SM_ALLOC_NON_CACHED,
+
+} VC_SM_ALLOC_TYPE_T;
+
+/* Message header for all messages in HOST->VC direction */
+typedef struct {
+	int32_t type;
+	uint32_t trans_id;
+	uint8_t body[0];
+
+} VC_SM_MSG_HDR_T;
+
+/* Request to allocate memory (HOST->VC) */
+typedef struct {
+	/* type of memory to allocate */
+	VC_SM_ALLOC_TYPE_T type;
+	/* byte amount of data to allocate per unit */
+	uint32_t base_unit;
+	/* number of unit to allocate */
+	uint32_t num_unit;
+	/* alignement to be applied on allocation */
+	uint32_t alignement;
+	/* identity of who allocated this block */
+	uint32_t allocator;
+	/* resource name (for easier tracking on vc side) */
+	char name[VC_SM_RESOURCE_NAME];
+
+} VC_SM_ALLOC_T;
+
+/* Result of a requested memory allocation (VC->HOST) */
+typedef struct {
+	/* Transaction identifier */
+	uint32_t trans_id;
+
+	/* Resource handle */
+	uint32_t res_handle;
+	/* Pointer to resource buffer */
+	void *res_mem;
+	/* Resource base size (bytes) */
+	uint32_t res_base_size;
+	/* Resource number */
+	uint32_t res_num;
+
+} VC_SM_ALLOC_RESULT_T;
+
+/* Request to free a previously allocated memory (HOST->VC) */
+typedef struct {
+	/* Resource handle (returned from alloc) */
+	uint32_t res_handle;
+	/* Resource buffer (returned from alloc) */
+	void *res_mem;
+
+} VC_SM_FREE_T;
+
+/* Request to lock a previously allocated memory (HOST->VC) */
+typedef struct {
+	/* Resource handle (returned from alloc) */
+	uint32_t res_handle;
+	/* Resource buffer (returned from alloc) */
+	void *res_mem;
+
+} VC_SM_LOCK_UNLOCK_T;
+
+/* Request to resize a previously allocated memory (HOST->VC) */
+typedef struct {
+	/* Resource handle (returned from alloc) */
+	uint32_t res_handle;
+	/* Resource buffer (returned from alloc) */
+	void *res_mem;
+	/* Resource *new* size requested (bytes) */
+	uint32_t res_new_size;
+
+} VC_SM_RESIZE_T;
+
+/* Result of a requested memory lock (VC->HOST) */
+typedef struct {
+	/* Transaction identifier */
+	uint32_t trans_id;
+
+	/* Resource handle */
+	uint32_t res_handle;
+	/* Pointer to resource buffer */
+	void *res_mem;
+	/* Pointer to former resource buffer if the memory
+	 * was reallocated */
+	void *res_old_mem;
+
+} VC_SM_LOCK_RESULT_T;
+
+/* Generic result for a request (VC->HOST) */
+typedef struct {
+	/* Transaction identifier */
+	uint32_t trans_id;
+
+	int32_t success;
+
+} VC_SM_RESULT_T;
+
+/* Request to revert a previously applied action (HOST->VC) */
+typedef struct {
+	/* Action of interest */
+	VC_SM_MSG_TYPE res_action;
+	/* Transaction identifier for the action of interest */
+	uint32_t action_trans_id;
+
+} VC_SM_ACTION_CLEAN_T;
+
+/* Request to remove all data associated with a given allocator (HOST->VC) */
+typedef struct {
+	/* Allocator identifier */
+	uint32_t allocator;
+
+} VC_SM_FREE_ALL_T;
+
+/* Union of ALL messages */
+typedef union {
+	VC_SM_ALLOC_T alloc;
+	VC_SM_ALLOC_RESULT_T alloc_result;
+	VC_SM_FREE_T free;
+	VC_SM_ACTION_CLEAN_T action_clean;
+	VC_SM_RESIZE_T resize;
+	VC_SM_LOCK_RESULT_T lock_result;
+	VC_SM_RESULT_T result;
+	VC_SM_FREE_ALL_T free_all;
+
+} VC_SM_MSG_UNION_T;
+
+#endif /* __VC_SM_DEFS_H__INCLUDED__ */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vc_sm_knl.h linux-rpi/arch/arm/mach-bcm2708/include/mach/vc_sm_knl.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vc_sm_knl.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/vc_sm_knl.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,55 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#ifndef __VC_SM_KNL_H__INCLUDED__
+#define __VC_SM_KNL_H__INCLUDED__
+
+#if !defined(__KERNEL__)
+#error "This interface is for kernel use only..."
+#endif
+
+/* Type of memory to be locked (ie mapped) */
+typedef enum {
+	VC_SM_LOCK_CACHED,
+	VC_SM_LOCK_NON_CACHED,
+
+} VC_SM_LOCK_CACHE_MODE_T;
+
+/* Allocate a shared memory handle and block.
+*/
+int vc_sm_alloc(VC_SM_ALLOC_T *alloc, int *handle);
+
+/* Free a previously allocated shared memory handle and block.
+*/
+int vc_sm_free(int handle);
+
+/* Lock a memory handle for use by kernel.
+*/
+int vc_sm_lock(int handle, VC_SM_LOCK_CACHE_MODE_T mode,
+	       long unsigned int *data);
+
+/* Unlock a memory handle in use by kernel.
+*/
+int vc_sm_unlock(int handle, int flush, int no_vc_unlock);
+
+/* Get an internal resource handle mapped from the external one.
+*/
+int vc_sm_int_handle(int handle);
+
+/* Map a shared memory region for use by kernel.
+*/
+int vc_sm_map(int handle, unsigned int sm_addr, VC_SM_LOCK_CACHE_MODE_T mode,
+	      long unsigned int *data);
+
+#endif /* __VC_SM_KNL_H__INCLUDED__ */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vc_vchi_sm.h linux-rpi/arch/arm/mach-bcm2708/include/mach/vc_vchi_sm.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vc_vchi_sm.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/vc_vchi_sm.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,82 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#ifndef __VC_VCHI_SM_H__INCLUDED__
+#define __VC_VCHI_SM_H__INCLUDED__
+
+#include "interface/vchi/vchi.h"
+
+#include "vc_sm_defs.h"
+
+/* Forward declare.
+*/
+typedef struct sm_instance *VC_VCHI_SM_HANDLE_T;
+
+/* Initialize the shared memory service, opens up vchi connection to talk to it.
+*/
+VC_VCHI_SM_HANDLE_T vc_vchi_sm_init(VCHI_INSTANCE_T vchi_instance,
+				    VCHI_CONNECTION_T **vchi_connections,
+				    uint32_t num_connections);
+
+/* Terminates the shared memory service.
+*/
+int vc_vchi_sm_stop(VC_VCHI_SM_HANDLE_T *handle);
+
+/* Ask the shared memory service to allocate some memory on videocre and
+** return the result of this allocation (which upon success will be a pointer
+** to some memory in videocore space).
+*/
+int vc_vchi_sm_alloc(VC_VCHI_SM_HANDLE_T handle,
+		     VC_SM_ALLOC_T *alloc,
+		     VC_SM_ALLOC_RESULT_T *alloc_result, uint32_t *trans_id);
+
+/* Ask the shared memory service to free up some memory that was previously
+** allocated by the vc_vchi_sm_alloc function call.
+*/
+int vc_vchi_sm_free(VC_VCHI_SM_HANDLE_T handle,
+		    VC_SM_FREE_T *free, uint32_t *trans_id);
+
+/* Ask the shared memory service to lock up some memory that was previously
+** allocated by the vc_vchi_sm_alloc function call.
+*/
+int vc_vchi_sm_lock(VC_VCHI_SM_HANDLE_T handle,
+		    VC_SM_LOCK_UNLOCK_T *lock_unlock,
+		    VC_SM_LOCK_RESULT_T *lock_result, uint32_t *trans_id);
+
+/* Ask the shared memory service to unlock some memory that was previously
+** allocated by the vc_vchi_sm_alloc function call.
+*/
+int vc_vchi_sm_unlock(VC_VCHI_SM_HANDLE_T handle,
+		      VC_SM_LOCK_UNLOCK_T *lock_unlock,
+		      uint32_t *trans_id, uint8_t wait_reply);
+
+/* Ask the shared memory service to resize some memory that was previously
+** allocated by the vc_vchi_sm_alloc function call.
+*/
+int vc_vchi_sm_resize(VC_VCHI_SM_HANDLE_T handle,
+		      VC_SM_RESIZE_T *resize, uint32_t *trans_id);
+
+/* Walk the allocated resources on the videocore side, the allocation will
+** show up in the log.  This is purely for debug/information and takes no
+** specific actions.
+*/
+int vc_vchi_sm_walk_alloc(VC_VCHI_SM_HANDLE_T handle);
+
+/* Clean up following a previously interrupted action which left the system
+** in a bad state of some sort.
+*/
+int vc_vchi_sm_clean_up(VC_VCHI_SM_HANDLE_T handle,
+			VC_SM_ACTION_CLEAN_T *action_clean);
+
+#endif /* __VC_VCHI_SM_H__INCLUDED__ */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vmalloc.h linux-rpi/arch/arm/mach-bcm2708/include/mach/vmalloc.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vmalloc.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/vmalloc.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,20 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/vmalloc.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#define VMALLOC_END		(0xe8000000)
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vmcs_sm_ioctl.h linux-rpi/arch/arm/mach-bcm2708/include/mach/vmcs_sm_ioctl.h
--- linux-3.18.10/arch/arm/mach-bcm2708/include/mach/vmcs_sm_ioctl.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/include/mach/vmcs_sm_ioctl.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,233 @@
+/*****************************************************************************
+*  Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+*  Unless you and Broadcom execute a separate written software license
+*  agreement governing use of this software, this software is licensed to you
+*  under the terms of the GNU General Public License version 2, available at
+*  http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+*  Notwithstanding the above, under no circumstances may you combine this
+*  software in any way with any other Broadcom software provided under a
+*  license other than the GPL, without Broadcom's express prior written
+*  consent.
+*
+*****************************************************************************/
+
+#if !defined(__VMCS_SM_IOCTL_H__INCLUDED__)
+#define __VMCS_SM_IOCTL_H__INCLUDED__
+
+/* ---- Include Files ---------------------------------------------------- */
+
+#if defined(__KERNEL__)
+#include <linux/types.h>	/* Needed for standard types */
+#else
+#include <stdint.h>
+#endif
+
+#include <linux/ioctl.h>
+
+/* ---- Constants and Types ---------------------------------------------- */
+
+#define VMCS_SM_RESOURCE_NAME               32
+#define VMCS_SM_RESOURCE_NAME_DEFAULT       "sm-host-resource"
+
+/* Type define used to create unique IOCTL number */
+#define VMCS_SM_MAGIC_TYPE                  'I'
+
+/* IOCTL commands */
+enum vmcs_sm_cmd_e {
+	VMCS_SM_CMD_ALLOC = 0x5A,	/* Start at 0x5A arbitrarily */
+	VMCS_SM_CMD_ALLOC_SHARE,
+	VMCS_SM_CMD_LOCK,
+	VMCS_SM_CMD_LOCK_CACHE,
+	VMCS_SM_CMD_UNLOCK,
+	VMCS_SM_CMD_RESIZE,
+	VMCS_SM_CMD_UNMAP,
+	VMCS_SM_CMD_FREE,
+	VMCS_SM_CMD_FLUSH,
+	VMCS_SM_CMD_INVALID,
+
+	VMCS_SM_CMD_SIZE_USR_HANDLE,
+	VMCS_SM_CMD_CHK_USR_HANDLE,
+
+	VMCS_SM_CMD_MAPPED_USR_HANDLE,
+	VMCS_SM_CMD_MAPPED_USR_ADDRESS,
+	VMCS_SM_CMD_MAPPED_VC_HDL_FROM_ADDR,
+	VMCS_SM_CMD_MAPPED_VC_HDL_FROM_HDL,
+	VMCS_SM_CMD_MAPPED_VC_ADDR_FROM_HDL,
+
+	VMCS_SM_CMD_VC_WALK_ALLOC,
+	VMCS_SM_CMD_HOST_WALK_MAP,
+	VMCS_SM_CMD_HOST_WALK_PID_ALLOC,
+	VMCS_SM_CMD_HOST_WALK_PID_MAP,
+
+	VMCS_SM_CMD_LAST	/* Do no delete */
+};
+
+/* Cache type supported, conveniently matches the user space definition in
+** user-vcsm.h.
+*/
+enum vmcs_sm_cache_e {
+	VMCS_SM_CACHE_NONE,
+	VMCS_SM_CACHE_HOST,
+	VMCS_SM_CACHE_VC,
+	VMCS_SM_CACHE_BOTH,
+};
+
+/* IOCTL Data structures */
+struct vmcs_sm_ioctl_alloc {
+	/* user -> kernel */
+	unsigned int size;
+	unsigned int num;
+	enum vmcs_sm_cache_e cached;
+	char name[VMCS_SM_RESOURCE_NAME];
+
+	/* kernel -> user */
+	unsigned int handle;
+	/* unsigned int base_addr; */
+};
+
+struct vmcs_sm_ioctl_alloc_share {
+	/* user -> kernel */
+	unsigned int handle;
+	unsigned int size;
+};
+
+struct vmcs_sm_ioctl_free {
+	/* user -> kernel */
+	unsigned int handle;
+	/* unsigned int base_addr; */
+};
+
+struct vmcs_sm_ioctl_lock_unlock {
+	/* user -> kernel */
+	unsigned int handle;
+
+	/* kernel -> user */
+	unsigned int addr;
+};
+
+struct vmcs_sm_ioctl_lock_cache {
+	/* user -> kernel */
+	unsigned int handle;
+	enum vmcs_sm_cache_e cached;
+};
+
+struct vmcs_sm_ioctl_resize {
+	/* user -> kernel */
+	unsigned int handle;
+	unsigned int new_size;
+
+	/* kernel -> user */
+	unsigned int old_size;
+};
+
+struct vmcs_sm_ioctl_map {
+	/* user -> kernel */
+	/* and kernel -> user */
+	unsigned int pid;
+	unsigned int handle;
+	unsigned int addr;
+
+	/* kernel -> user */
+	unsigned int size;
+};
+
+struct vmcs_sm_ioctl_walk {
+	/* user -> kernel */
+	unsigned int pid;
+};
+
+struct vmcs_sm_ioctl_chk {
+	/* user -> kernel */
+	unsigned int handle;
+
+	/* kernel -> user */
+	unsigned int addr;
+	unsigned int size;
+	enum vmcs_sm_cache_e cache;
+};
+
+struct vmcs_sm_ioctl_size {
+	/* user -> kernel */
+	unsigned int handle;
+
+	/* kernel -> user */
+	unsigned int size;
+};
+
+struct vmcs_sm_ioctl_cache {
+	/* user -> kernel */
+	unsigned int handle;
+	unsigned int addr;
+	unsigned int size;
+};
+
+/* IOCTL numbers */
+#define VMCS_SM_IOCTL_MEM_ALLOC\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_ALLOC,\
+	 struct vmcs_sm_ioctl_alloc)
+#define VMCS_SM_IOCTL_MEM_ALLOC_SHARE\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_ALLOC_SHARE,\
+	 struct vmcs_sm_ioctl_alloc_share)
+#define VMCS_SM_IOCTL_MEM_LOCK\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_LOCK,\
+	 struct vmcs_sm_ioctl_lock_unlock)
+#define VMCS_SM_IOCTL_MEM_LOCK_CACHE\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_LOCK_CACHE,\
+	 struct vmcs_sm_ioctl_lock_cache)
+#define VMCS_SM_IOCTL_MEM_UNLOCK\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_UNLOCK,\
+	 struct vmcs_sm_ioctl_lock_unlock)
+#define VMCS_SM_IOCTL_MEM_RESIZE\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_RESIZE,\
+	 struct vmcs_sm_ioctl_resize)
+#define VMCS_SM_IOCTL_MEM_FREE\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_FREE,\
+	 struct vmcs_sm_ioctl_free)
+#define VMCS_SM_IOCTL_MEM_FLUSH\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_FLUSH,\
+	 struct vmcs_sm_ioctl_cache)
+#define VMCS_SM_IOCTL_MEM_INVALID\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_INVALID,\
+	 struct vmcs_sm_ioctl_cache)
+
+#define VMCS_SM_IOCTL_SIZE_USR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_SIZE_USR_HANDLE,\
+	 struct vmcs_sm_ioctl_size)
+#define VMCS_SM_IOCTL_CHK_USR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_CHK_USR_HANDLE,\
+	 struct vmcs_sm_ioctl_chk)
+
+#define VMCS_SM_IOCTL_MAP_USR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_USR_HANDLE,\
+	 struct vmcs_sm_ioctl_map)
+#define VMCS_SM_IOCTL_MAP_USR_ADDRESS\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_USR_ADDRESS,\
+	 struct vmcs_sm_ioctl_map)
+#define VMCS_SM_IOCTL_MAP_VC_HDL_FR_ADDR\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_VC_HDL_FROM_ADDR,\
+	 struct vmcs_sm_ioctl_map)
+#define VMCS_SM_IOCTL_MAP_VC_HDL_FR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_VC_HDL_FROM_HDL,\
+	 struct vmcs_sm_ioctl_map)
+#define VMCS_SM_IOCTL_MAP_VC_ADDR_FR_HDL\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_MAPPED_VC_ADDR_FROM_HDL,\
+	 struct vmcs_sm_ioctl_map)
+
+#define VMCS_SM_IOCTL_VC_WALK_ALLOC\
+	_IO(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_VC_WALK_ALLOC)
+#define VMCS_SM_IOCTL_HOST_WALK_MAP\
+	_IO(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_HOST_WALK_MAP)
+#define VMCS_SM_IOCTL_HOST_WALK_PID_ALLOC\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_HOST_WALK_PID_ALLOC,\
+	 struct vmcs_sm_ioctl_walk)
+#define VMCS_SM_IOCTL_HOST_WALK_PID_MAP\
+	_IOR(VMCS_SM_MAGIC_TYPE, VMCS_SM_CMD_HOST_WALK_PID_MAP,\
+	 struct vmcs_sm_ioctl_walk)
+
+/* ---- Variable Externs ------------------------------------------------- */
+
+/* ---- Function Prototypes ---------------------------------------------- */
+
+#endif /* __VMCS_SM_IOCTL_H__INCLUDED__ */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/Kconfig linux-rpi/arch/arm/mach-bcm2708/Kconfig
--- linux-3.18.10/arch/arm/mach-bcm2708/Kconfig	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/Kconfig	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,52 @@
+menu "Broadcom BCM2708 Implementations"
+	depends on ARCH_BCM2708
+
+config MACH_BCM2708
+	bool "Broadcom BCM2708 Development Platform"
+	select NEED_MACH_MEMORY_H
+	select NEED_MACH_IO_H
+	select CPU_V6
+	help
+	  Include support for the Broadcom(R) BCM2708 platform.
+
+config BCM2708_DT
+	bool "BCM2708 Device Tree support"
+	depends on MACH_BCM2708
+	default n
+	select USE_OF
+	select ARCH_REQUIRE_GPIOLIB
+	select PINCTRL
+	select PINCTRL_BCM2835
+	help
+	  Enable Device Tree support for BCM2708
+
+config BCM2708_GPIO
+	bool "BCM2708 gpio support"
+	depends on MACH_BCM2708
+	select ARCH_REQUIRE_GPIOLIB
+        default y
+	help
+	  Include support for the Broadcom(R) BCM2708 gpio.
+
+config BCM2708_VCMEM
+	bool "Videocore Memory"
+	depends on MACH_BCM2708
+        default y
+        help
+          Helper for videocore memory access and total size allocation.
+
+config BCM2708_NOL2CACHE
+	bool "Videocore L2 cache disable"
+	depends on MACH_BCM2708
+        default n
+        help
+          Do not allow ARM to use GPU's L2 cache. Requires disable_l2cache in config.txt.
+
+config BCM2708_SPIDEV
+	bool "Bind spidev to SPI0 master"
+	depends on MACH_BCM2708
+	depends on SPI
+	default y
+	help
+	  Binds spidev driver to the SPI0 master
+endmenu
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/Makefile linux-rpi/arch/arm/mach-bcm2708/Makefile
--- linux-3.18.10/arch/arm/mach-bcm2708/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/Makefile	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,7 @@
+#
+# Makefile for the linux kernel.
+#
+
+obj-$(CONFIG_MACH_BCM2708) 	+= bcm2708.o armctrl.o vcio.o power.o dma.o
+obj-$(CONFIG_BCM2708_GPIO)	+= bcm2708_gpio.o
+obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/Makefile.boot linux-rpi/arch/arm/mach-bcm2708/Makefile.boot
--- linux-3.18.10/arch/arm/mach-bcm2708/Makefile.boot	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/Makefile.boot	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,3 @@
+   zreladdr-y	:= 0x00008000
+params_phys-y	:= 0x00000100
+initrd_phys-y	:= 0x00800000
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/power.c linux-rpi/arch/arm/mach-bcm2708/power.c
--- linux-3.18.10/arch/arm/mach-bcm2708/power.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/power.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,197 @@
+/*
+ *	 linux/arch/arm/mach-bcm2708/power.c
+ *
+ *	 Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This device provides a shared mechanism for controlling the power to
+ * VideoCore subsystems.
+ */
+
+#include <linux/module.h>
+#include <linux/semaphore.h>
+#include <linux/bug.h>
+#include <mach/power.h>
+#include <mach/vcio.h>
+#include <mach/arm_power.h>
+
+#define DRIVER_NAME "bcm2708_power"
+
+#define BCM_POWER_MAXCLIENTS 4
+#define BCM_POWER_NOCLIENT (1<<31)
+
+/* Some drivers expect there devices to be permanently powered */
+
+#ifdef CONFIG_USB
+#define BCM_POWER_ALWAYS_ON (BCM_POWER_USB)
+#endif
+
+#if 1
+#define DPRINTK printk
+#else
+#define DPRINTK if (0) printk
+#endif
+
+struct state_struct {
+	uint32_t global_request;
+	uint32_t client_request[BCM_POWER_MAXCLIENTS];
+	struct semaphore client_mutex;
+	struct semaphore mutex;
+} g_state;
+
+int bcm_power_open(BCM_POWER_HANDLE_T *handle)
+{
+	BCM_POWER_HANDLE_T i;
+	int ret = -EBUSY;
+
+	down(&g_state.client_mutex);
+
+	for (i = 0; i < BCM_POWER_MAXCLIENTS; i++) {
+		if (g_state.client_request[i] == BCM_POWER_NOCLIENT) {
+			g_state.client_request[i] = BCM_POWER_NONE;
+			*handle = i;
+			ret = 0;
+			break;
+		}
+	}
+
+	up(&g_state.client_mutex);
+
+	DPRINTK("bcm_power_open() -> %d\n", *handle);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(bcm_power_open);
+
+int bcm_power_request(BCM_POWER_HANDLE_T handle, uint32_t request)
+{
+	int rc = 0;
+
+	DPRINTK("bcm_power_request(%d, %x)\n", handle, request);
+
+	if ((handle < BCM_POWER_MAXCLIENTS) &&
+	    (g_state.client_request[handle] != BCM_POWER_NOCLIENT)) {
+		if (down_interruptible(&g_state.mutex) != 0) {
+			DPRINTK("bcm_power_request -> interrupted\n");
+			return -EINTR;
+		}
+
+		if (request != g_state.client_request[handle]) {
+			uint32_t others_request = 0;
+			uint32_t global_request;
+			BCM_POWER_HANDLE_T i;
+
+			for (i = 0; i < BCM_POWER_MAXCLIENTS; i++) {
+				if (i != handle)
+					others_request |=
+					    g_state.client_request[i];
+			}
+			others_request &= ~BCM_POWER_NOCLIENT;
+
+			global_request = request | others_request;
+			if (global_request != g_state.global_request) {
+				uint32_t actual;
+
+				/* Send a request to VideoCore */
+				bcm_mailbox_write(MBOX_CHAN_POWER,
+						  global_request << 4);
+
+				/* Wait for a response during power-up */
+				if (global_request & ~g_state.global_request) {
+					rc = bcm_mailbox_read(MBOX_CHAN_POWER,
+							      &actual);
+					DPRINTK
+					    ("bcm_mailbox_read -> %08x, %d\n",
+					     actual, rc);
+					actual >>= 4;
+				} else {
+					rc = 0;
+					actual = global_request;
+				}
+
+				if (rc == 0) {
+					if (actual != global_request) {
+						printk(KERN_ERR
+						     "%s: prev global %x, new global %x, actual %x, request %x, others_request %x\n",
+						     __func__,
+						     g_state.global_request,
+						     global_request, actual, request, others_request);
+						/* A failure */
+						BUG_ON((others_request & actual)
+						       != others_request);
+						request &= actual;
+						rc = -EIO;
+					}
+
+					g_state.global_request = actual;
+					g_state.client_request[handle] =
+					    request;
+				}
+			}
+		}
+		up(&g_state.mutex);
+	} else {
+		rc = -EINVAL;
+	}
+	DPRINTK("bcm_power_request -> %d\n", rc);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_power_request);
+
+int bcm_power_close(BCM_POWER_HANDLE_T handle)
+{
+	int rc;
+
+	DPRINTK("bcm_power_close(%d)\n", handle);
+
+	rc = bcm_power_request(handle, BCM_POWER_NONE);
+	if (rc == 0)
+		g_state.client_request[handle] = BCM_POWER_NOCLIENT;
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_power_close);
+
+static int __init bcm_power_init(void)
+{
+#if defined(BCM_POWER_ALWAYS_ON)
+	BCM_POWER_HANDLE_T always_on_handle;
+#endif
+	int rc = 0;
+	int i;
+
+	printk(KERN_INFO "bcm_power: Broadcom power driver\n");
+	bcm_mailbox_write(MBOX_CHAN_POWER, 0);
+
+	for (i = 0; i < BCM_POWER_MAXCLIENTS; i++)
+		g_state.client_request[i] = BCM_POWER_NOCLIENT;
+
+	sema_init(&g_state.client_mutex, 1);
+	sema_init(&g_state.mutex, 1);
+
+	g_state.global_request = 0;
+
+#if defined(BCM_POWER_ALWAYS_ON)
+	if (BCM_POWER_ALWAYS_ON) {
+		bcm_power_open(&always_on_handle);
+		bcm_power_request(always_on_handle, BCM_POWER_ALWAYS_ON);
+	}
+#endif
+
+	return rc;
+}
+
+static void __exit bcm_power_exit(void)
+{
+	bcm_mailbox_write(MBOX_CHAN_POWER, 0);
+}
+
+arch_initcall(bcm_power_init);	/* Initialize early */
+module_exit(bcm_power_exit);
+
+MODULE_AUTHOR("Phil Elwell");
+MODULE_DESCRIPTION("Interface to BCM2708 power management");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/vcio.c linux-rpi/arch/arm/mach-bcm2708/vcio.c
--- linux-3.18.10/arch/arm/mach-bcm2708/vcio.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/vcio.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,484 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/vcio.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This device provides a shared mechanism for writing to the mailboxes,
+ * semaphores, doorbells etc. that are shared between the ARM and the
+ * VideoCore processor
+ */
+
+#if defined(CONFIG_SERIAL_BCM_MBOX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/module.h>
+#include <linux/console.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/sysrq.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <linux/io.h>
+
+#include <mach/vcio.h>
+#include <mach/platform.h>
+
+#include <asm/uaccess.h>
+
+
+#define DRIVER_NAME BCM_VCIO_DRIVER_NAME
+
+/* ----------------------------------------------------------------------
+ *	Mailbox
+ * -------------------------------------------------------------------- */
+
+/* offsets from a mail box base address */
+#define MAIL_WRT	0x00	/* write - and next 4 words */
+#define MAIL_RD		0x00	/* read - and next 4 words */
+#define MAIL_POL	0x10	/* read without popping the fifo */
+#define MAIL_SND	0x14	/* sender ID (bottom two bits) */
+#define MAIL_STA	0x18	/* status */
+#define MAIL_CNF	0x1C	/* configuration */
+
+#define MBOX_MSG(chan, data28)		(((data28) & ~0xf) | ((chan) & 0xf))
+#define MBOX_MSG_LSB(chan, data28) (((data28) << 4) | ((chan) & 0xf))
+#define MBOX_CHAN(msg)			((msg) & 0xf)
+#define MBOX_DATA28(msg)		((msg) & ~0xf)
+#define MBOX_DATA28_LSB(msg)		(((uint32_t)msg) >> 4)
+
+#define MBOX_MAGIC 0xd0d0c0de
+static struct class *vcio_class = NULL;
+struct vc_mailbox {
+	struct device *dev;	/* parent device */
+	void __iomem *status;
+	void __iomem *config;
+	void __iomem *read;
+	void __iomem *write;
+	uint32_t msg[MBOX_CHAN_COUNT];
+	struct semaphore sema[MBOX_CHAN_COUNT];
+	uint32_t magic;
+};
+
+static void mbox_init(struct vc_mailbox *mbox_out, struct device *dev,
+		      uint32_t addr_mbox)
+{
+	int i;
+
+	mbox_out->dev = dev;
+	mbox_out->status = __io_address(addr_mbox + MAIL_STA);
+	mbox_out->config = __io_address(addr_mbox + MAIL_CNF);
+	mbox_out->read = __io_address(addr_mbox + MAIL_RD);
+	/* Write to the other mailbox */
+	mbox_out->write =
+	    __io_address((addr_mbox ^ ARM_0_MAIL0_WRT ^ ARM_0_MAIL1_WRT) +
+			 MAIL_WRT);
+
+	for (i = 0; i < MBOX_CHAN_COUNT; i++) {
+		mbox_out->msg[i] = 0;
+		sema_init(&mbox_out->sema[i], 0);
+	}
+
+	/* Enable the interrupt on data reception */
+	writel(ARM_MC_IHAVEDATAIRQEN, mbox_out->config);
+
+	mbox_out->magic = MBOX_MAGIC;
+}
+
+static int mbox_write(struct vc_mailbox *mbox, unsigned chan, uint32_t data28)
+{
+	int rc;
+
+	if (mbox->magic != MBOX_MAGIC)
+		rc = -EINVAL;
+	else {
+		/* wait for the mailbox FIFO to have some space in it */
+		while (0 != (readl(mbox->status) & ARM_MS_FULL))
+			cpu_relax();
+
+		writel(MBOX_MSG(chan, data28), mbox->write);
+		rc = 0;
+	}
+	return rc;
+}
+
+static int mbox_read(struct vc_mailbox *mbox, unsigned chan, uint32_t *data28)
+{
+	int rc;
+
+	if (mbox->magic != MBOX_MAGIC)
+		rc = -EINVAL;
+	else {
+		down(&mbox->sema[chan]);
+		*data28 = MBOX_DATA28(mbox->msg[chan]);
+		mbox->msg[chan] = 0;
+		rc = 0;
+	}
+	return rc;
+}
+
+static irqreturn_t mbox_irq(int irq, void *dev_id)
+{
+	/* wait for the mailbox FIFO to have some data in it */
+	struct vc_mailbox *mbox = (struct vc_mailbox *) dev_id;
+	int status = readl(mbox->status);
+	int ret = IRQ_NONE;
+
+	while (!(status & ARM_MS_EMPTY)) {
+		uint32_t msg = readl(mbox->read);
+		int chan = MBOX_CHAN(msg);
+		if (chan < MBOX_CHAN_COUNT) {
+			if (mbox->msg[chan]) {
+				/* Overflow */
+				printk(KERN_ERR DRIVER_NAME
+				       ": mbox chan %d overflow - drop %08x\n",
+				       chan, msg);
+			} else {
+				mbox->msg[chan] = (msg | 0xf);
+				up(&mbox->sema[chan]);
+			}
+		} else {
+			printk(KERN_ERR DRIVER_NAME
+			       ": invalid channel selector (msg %08x)\n", msg);
+		}
+		ret = IRQ_HANDLED;
+		status = readl(mbox->status);
+	}
+	return ret;
+}
+
+static struct irqaction mbox_irqaction = {
+	.name = "ARM Mailbox IRQ",
+	.flags = IRQF_DISABLED | IRQF_IRQPOLL,
+	.handler = mbox_irq,
+};
+
+/* ----------------------------------------------------------------------
+ *	Mailbox Methods
+ * -------------------------------------------------------------------- */
+
+static struct device *mbox_dev;	/* we assume there's only one! */
+
+static int dev_mbox_write(struct device *dev, unsigned chan, uint32_t data28)
+{
+	int rc;
+
+	struct vc_mailbox *mailbox = dev_get_drvdata(dev);
+	device_lock(dev);
+	rc = mbox_write(mailbox, chan, data28);
+	device_unlock(dev);
+
+	return rc;
+}
+
+static int dev_mbox_read(struct device *dev, unsigned chan, uint32_t *data28)
+{
+	int rc;
+
+	struct vc_mailbox *mailbox = dev_get_drvdata(dev);
+	device_lock(dev);
+	rc = mbox_read(mailbox, chan, data28);
+	device_unlock(dev);
+
+	return rc;
+}
+
+extern int bcm_mailbox_write(unsigned chan, uint32_t data28)
+{
+	if (mbox_dev)
+		return dev_mbox_write(mbox_dev, chan, data28);
+	else
+		return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(bcm_mailbox_write);
+
+extern int bcm_mailbox_read(unsigned chan, uint32_t *data28)
+{
+	if (mbox_dev)
+		return dev_mbox_read(mbox_dev, chan, data28);
+	else
+		return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(bcm_mailbox_read);
+
+static void dev_mbox_register(const char *dev_name, struct device *dev)
+{
+	mbox_dev = dev;
+}
+
+static int mbox_copy_from_user(void *dst, const void *src, int size)
+{
+	if ( (uint32_t)src < TASK_SIZE)
+	{
+		return copy_from_user(dst, src, size);
+	}
+	else
+	{
+		memcpy( dst, src, size );
+		return 0;
+	}
+}
+
+static int mbox_copy_to_user(void *dst, const void *src, int size)
+{
+	if ( (uint32_t)dst < TASK_SIZE)
+	{
+		return copy_to_user(dst, src, size);
+	}
+	else
+	{
+		memcpy( dst, src, size );
+		return 0;
+	}
+}
+
+static DEFINE_MUTEX(mailbox_lock);
+extern int bcm_mailbox_property(void *data, int size)
+{
+	uint32_t success;
+	dma_addr_t mem_bus;				/* the memory address accessed from videocore */
+	void *mem_kern;					/* the memory address accessed from driver */
+	int s = 0;
+
+        mutex_lock(&mailbox_lock);
+	/* allocate some memory for the messages communicating with GPU */
+	mem_kern = dma_alloc_coherent(NULL, PAGE_ALIGN(size), &mem_bus, GFP_ATOMIC);
+	if (mem_kern) {
+		/* create the message */
+		mbox_copy_from_user(mem_kern, data, size);
+
+		/* send the message */
+		wmb();
+		s = bcm_mailbox_write(MBOX_CHAN_PROPERTY, (uint32_t)mem_bus);
+		if (s == 0) {
+			s = bcm_mailbox_read(MBOX_CHAN_PROPERTY, &success);
+		}
+		if (s == 0) {
+			/* copy the response */
+			rmb();
+			mbox_copy_to_user(data, mem_kern, size);
+		}
+		dma_free_coherent(NULL, PAGE_ALIGN(size), mem_kern, mem_bus);
+	} else {
+		s = -ENOMEM;
+	}
+	if (s != 0)
+		printk(KERN_ERR DRIVER_NAME ": %s failed (%d)\n", __func__, s);
+
+        mutex_unlock(&mailbox_lock);
+	return s;
+}
+EXPORT_SYMBOL_GPL(bcm_mailbox_property);
+
+/* ----------------------------------------------------------------------
+ *	Platform Device for Mailbox
+ * -------------------------------------------------------------------- */
+
+/*
+ * Is the device open right now? Used to prevent
+ * concurent access into the same device
+ */
+static int Device_Open = 0;
+
+/*
+ * This is called whenever a process attempts to open the device file
+ */
+static int device_open(struct inode *inode, struct file *file)
+{
+	/*
+	 * We don't want to talk to two processes at the same time
+	 */
+	if (Device_Open)
+		return -EBUSY;
+
+	Device_Open++;
+	/*
+	 * Initialize the message
+	 */
+	try_module_get(THIS_MODULE);
+	return 0;
+}
+
+static int device_release(struct inode *inode, struct file *file)
+{
+	/*
+	 * We're now ready for our next caller
+	 */
+	Device_Open--;
+
+	module_put(THIS_MODULE);
+	return 0;
+}
+
+/*
+ * This function is called whenever a process tries to do an ioctl on our
+ * device file. We get two extra parameters (additional to the inode and file
+ * structures, which all device functions get): the number of the ioctl called
+ * and the parameter given to the ioctl function.
+ *
+ * If the ioctl is write or read/write (meaning output is returned to the
+ * calling process), the ioctl call returns the output of this function.
+ *
+ */
+static long device_ioctl(struct file *file,	/* see include/linux/fs.h */
+		 unsigned int ioctl_num,	/* number and param for ioctl */
+		 unsigned long ioctl_param)
+{
+	unsigned size;
+	/*
+	 * Switch according to the ioctl called
+	 */
+	switch (ioctl_num) {
+	case IOCTL_MBOX_PROPERTY:
+		/*
+		 * Receive a pointer to a message (in user space) and set that
+		 * to be the device's message.  Get the parameter given to
+		 * ioctl by the process.
+		 */
+		mbox_copy_from_user(&size, (void *)ioctl_param, sizeof size);
+		return bcm_mailbox_property((void *)ioctl_param, size);
+		break;
+	default:
+		printk(KERN_ERR DRIVER_NAME "unknown ioctl: %d\n", ioctl_num);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Module Declarations */
+
+/*
+ * This structure will hold the functions to be called
+ * when a process does something to the device we
+ * created. Since a pointer to this structure is kept in
+ * the devices table, it can't be local to
+ * init_module. NULL is for unimplemented functios.
+ */
+struct file_operations fops = {
+	.unlocked_ioctl = device_ioctl,
+	.open = device_open,
+	.release = device_release,	/* a.k.a. close */
+};
+
+static int bcm_vcio_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	struct vc_mailbox *mailbox;
+
+	mailbox = kzalloc(sizeof(*mailbox), GFP_KERNEL);
+	if (NULL == mailbox) {
+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
+		       "mailbox memory\n");
+		ret = -ENOMEM;
+	} else {
+		struct resource *res;
+
+		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		if (res == NULL) {
+			printk(KERN_ERR DRIVER_NAME ": failed to obtain memory "
+			       "resource\n");
+			ret = -ENODEV;
+			kfree(mailbox);
+		} else {
+			/* should be based on the registers from res really */
+			mbox_init(mailbox, &pdev->dev, ARM_0_MAIL0_RD);
+
+			platform_set_drvdata(pdev, mailbox);
+			dev_mbox_register(DRIVER_NAME, &pdev->dev);
+
+			mbox_irqaction.dev_id = mailbox;
+			setup_irq(IRQ_ARM_MAILBOX, &mbox_irqaction);
+			printk(KERN_INFO DRIVER_NAME ": mailbox at %p\n",
+			       __io_address(ARM_0_MAIL0_RD));
+		}
+	}
+
+	if (ret == 0) {
+		/*
+		 * Register the character device
+		 */
+		ret = register_chrdev(MAJOR_NUM, DEVICE_FILE_NAME, &fops);
+
+		/*
+		 * Negative values signify an error
+		 */
+		if (ret < 0) {
+			printk(KERN_ERR DRIVER_NAME
+			       "Failed registering the character device %d\n", ret);
+			return ret;
+		}
+		vcio_class = class_create(THIS_MODULE, BCM_VCIO_DRIVER_NAME);
+		if (IS_ERR(vcio_class)) {
+		    ret = PTR_ERR(vcio_class);
+		   return ret ;
+		}
+		device_create(vcio_class, NULL, MKDEV(MAJOR_NUM, 0), NULL,
+                      "vcio");
+	}
+	return ret;
+}
+
+static int bcm_vcio_remove(struct platform_device *pdev)
+{
+	struct vc_mailbox *mailbox = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	kfree(mailbox);
+
+	return 0;
+}
+
+static struct platform_driver bcm_mbox_driver = {
+	.probe = bcm_vcio_probe,
+	.remove = bcm_vcio_remove,
+
+	.driver = {
+		   .name = DRIVER_NAME,
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static int __init bcm_mbox_init(void)
+{
+	int ret;
+
+	printk(KERN_INFO "mailbox: Broadcom VideoCore Mailbox driver\n");
+
+	ret = platform_driver_register(&bcm_mbox_driver);
+	if (ret != 0) {
+		printk(KERN_ERR DRIVER_NAME ": failed to register "
+		       "on platform\n");
+	}
+
+	return ret;
+}
+
+static void __exit bcm_mbox_exit(void)
+{
+	device_destroy(vcio_class,MKDEV(MAJOR_NUM, 0));
+	class_destroy(vcio_class);
+	unregister_chrdev(MAJOR_NUM, DEVICE_FILE_NAME);
+	platform_driver_unregister(&bcm_mbox_driver);
+}
+
+arch_initcall(bcm_mbox_init);	/* Initialize early */
+module_exit(bcm_mbox_exit);
+
+MODULE_AUTHOR("Gray Girling");
+MODULE_DESCRIPTION("ARM I/O to VideoCore processor");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bcm-mbox");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2708/vc_mem.c linux-rpi/arch/arm/mach-bcm2708/vc_mem.c
--- linux-3.18.10/arch/arm/mach-bcm2708/vc_mem.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2708/vc_mem.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,432 @@
+/*****************************************************************************
+* Copyright 2010 - 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/cdev.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <asm/uaccess.h>
+#include <linux/dma-mapping.h>
+
+#ifdef CONFIG_ARCH_KONA
+#include <chal/chal_ipc.h>
+#elif CONFIG_ARCH_BCM2708
+#else
+#include <csp/chal_ipc.h>
+#endif
+
+#include "mach/vc_mem.h"
+#include <mach/vcio.h>
+
+#define DRIVER_NAME  "vc-mem"
+
+// Device (/dev) related variables
+static dev_t vc_mem_devnum = 0;
+static struct class *vc_mem_class = NULL;
+static struct cdev vc_mem_cdev;
+static int vc_mem_inited = 0;
+
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *vc_mem_debugfs_entry;
+#endif
+
+/*
+ * Videocore memory addresses and size
+ *
+ * Drivers that wish to know the videocore memory addresses and sizes should
+ * use these variables instead of the MM_IO_BASE and MM_ADDR_IO defines in
+ * headers. This allows the other drivers to not be tied down to a a certain
+ * address/size at compile time.
+ *
+ * In the future, the goal is to have the videocore memory virtual address and
+ * size be calculated at boot time rather than at compile time. The decision of
+ * where the videocore memory resides and its size would be in the hands of the
+ * bootloader (and/or kernel). When that happens, the values of these variables
+ * would be calculated and assigned in the init function.
+ */
+// in the 2835 VC in mapped above ARM, but ARM has full access to VC space
+unsigned long mm_vc_mem_phys_addr = 0x00000000;
+unsigned int mm_vc_mem_size = 0;
+unsigned int mm_vc_mem_base = 0;
+
+EXPORT_SYMBOL(mm_vc_mem_phys_addr);
+EXPORT_SYMBOL(mm_vc_mem_size);
+EXPORT_SYMBOL(mm_vc_mem_base);
+
+static uint phys_addr = 0;
+static uint mem_size = 0;
+static uint mem_base = 0;
+
+
+/****************************************************************************
+*
+*   vc_mem_open
+*
+***************************************************************************/
+
+static int
+vc_mem_open(struct inode *inode, struct file *file)
+{
+	(void) inode;
+	(void) file;
+
+	pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vc_mem_release
+*
+***************************************************************************/
+
+static int
+vc_mem_release(struct inode *inode, struct file *file)
+{
+	(void) inode;
+	(void) file;
+
+	pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vc_mem_get_size
+*
+***************************************************************************/
+
+static void
+vc_mem_get_size(void)
+{
+}
+
+/****************************************************************************
+*
+*   vc_mem_get_base
+*
+***************************************************************************/
+
+static void
+vc_mem_get_base(void)
+{
+}
+
+/****************************************************************************
+*
+*   vc_mem_get_current_size
+*
+***************************************************************************/
+
+int
+vc_mem_get_current_size(void)
+{
+	return mm_vc_mem_size;
+}
+
+EXPORT_SYMBOL_GPL(vc_mem_get_current_size);
+
+/****************************************************************************
+*
+*   vc_mem_ioctl
+*
+***************************************************************************/
+
+static long
+vc_mem_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	int rc = 0;
+
+	(void) cmd;
+	(void) arg;
+
+	pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+	switch (cmd) {
+	case VC_MEM_IOC_MEM_PHYS_ADDR:
+		{
+			pr_debug("%s: VC_MEM_IOC_MEM_PHYS_ADDR=0x%p\n",
+				__func__, (void *) mm_vc_mem_phys_addr);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_phys_addr,
+					 sizeof (mm_vc_mem_phys_addr)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	case VC_MEM_IOC_MEM_SIZE:
+		{
+			// Get the videocore memory size first
+			vc_mem_get_size();
+
+			pr_debug("%s: VC_MEM_IOC_MEM_SIZE=%u\n", __func__,
+				mm_vc_mem_size);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_size,
+					 sizeof (mm_vc_mem_size)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	case VC_MEM_IOC_MEM_BASE:
+		{
+			// Get the videocore memory base
+			vc_mem_get_base();
+
+			pr_debug("%s: VC_MEM_IOC_MEM_BASE=%u\n", __func__,
+				mm_vc_mem_base);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_base,
+					 sizeof (mm_vc_mem_base)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	case VC_MEM_IOC_MEM_LOAD:
+		{
+			// Get the videocore memory base
+			vc_mem_get_base();
+
+			pr_debug("%s: VC_MEM_IOC_MEM_LOAD=%u\n", __func__,
+				mm_vc_mem_base);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_base,
+					 sizeof (mm_vc_mem_base)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	default:
+		{
+			return -ENOTTY;
+		}
+	}
+	pr_debug("%s: file = 0x%p returning %d\n", __func__, file, rc);
+
+	return rc;
+}
+
+/****************************************************************************
+*
+*   vc_mem_mmap
+*
+***************************************************************************/
+
+static int
+vc_mem_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+	int rc = 0;
+	unsigned long length = vma->vm_end - vma->vm_start;
+	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+
+	pr_debug("%s: vm_start = 0x%08lx vm_end = 0x%08lx vm_pgoff = 0x%08lx\n",
+		__func__, (long) vma->vm_start, (long) vma->vm_end,
+		(long) vma->vm_pgoff);
+
+	if (offset + length > mm_vc_mem_size) {
+		pr_err("%s: length %ld is too big\n", __func__, length);
+		return -EINVAL;
+	}
+	// Do not cache the memory map
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+	rc = remap_pfn_range(vma, vma->vm_start,
+			     (mm_vc_mem_phys_addr >> PAGE_SHIFT) +
+			     vma->vm_pgoff, length, vma->vm_page_prot);
+	if (rc != 0) {
+		pr_err("%s: remap_pfn_range failed (rc=%d)\n", __func__, rc);
+	}
+
+	return rc;
+}
+
+/****************************************************************************
+*
+*   File Operations for the driver.
+*
+***************************************************************************/
+
+static const struct file_operations vc_mem_fops = {
+	.owner = THIS_MODULE,
+	.open = vc_mem_open,
+	.release = vc_mem_release,
+	.unlocked_ioctl = vc_mem_ioctl,
+	.mmap = vc_mem_mmap,
+};
+
+#ifdef CONFIG_DEBUG_FS
+static void vc_mem_debugfs_deinit(void)
+{
+	debugfs_remove_recursive(vc_mem_debugfs_entry);
+	vc_mem_debugfs_entry = NULL;
+}
+
+
+static int vc_mem_debugfs_init(
+	struct device *dev)
+{
+	vc_mem_debugfs_entry = debugfs_create_dir(DRIVER_NAME, NULL);
+	if (!vc_mem_debugfs_entry) {
+		dev_warn(dev, "could not create debugfs entry\n");
+		return -EFAULT;
+	}
+
+	if (!debugfs_create_x32("vc_mem_phys_addr",
+				0444,
+				vc_mem_debugfs_entry,
+				(u32 *)&mm_vc_mem_phys_addr)) {
+		dev_warn(dev, "%s:could not create vc_mem_phys entry\n",
+			__func__);
+		goto fail;
+	}
+
+	if (!debugfs_create_x32("vc_mem_size",
+				0444,
+				vc_mem_debugfs_entry,
+				(u32 *)&mm_vc_mem_size)) {
+		dev_warn(dev, "%s:could not create vc_mem_size entry\n",
+			__func__);
+		goto fail;
+	}
+
+	if (!debugfs_create_x32("vc_mem_base",
+				0444,
+				vc_mem_debugfs_entry,
+				(u32 *)&mm_vc_mem_base)) {
+		dev_warn(dev, "%s:could not create vc_mem_base entry\n",
+			 __func__);
+		goto fail;
+	}
+
+	return 0;
+
+fail:
+	vc_mem_debugfs_deinit();
+	return -EFAULT;
+}
+
+#endif /* CONFIG_DEBUG_FS */
+
+
+/****************************************************************************
+*
+*   vc_mem_init
+*
+***************************************************************************/
+
+static int __init
+vc_mem_init(void)
+{
+	int rc = -EFAULT;
+	struct device *dev;
+
+	pr_debug("%s: called\n", __func__);
+
+	mm_vc_mem_phys_addr = phys_addr;
+	mm_vc_mem_size = mem_size;
+	mm_vc_mem_base = mem_base;
+
+	vc_mem_get_size();
+
+	pr_info("vc-mem: phys_addr:0x%08lx mem_base=0x%08x mem_size:0x%08x(%u MiB)\n",
+		mm_vc_mem_phys_addr, mm_vc_mem_base, mm_vc_mem_size, mm_vc_mem_size / (1024 * 1024));
+
+	if ((rc = alloc_chrdev_region(&vc_mem_devnum, 0, 1, DRIVER_NAME)) < 0) {
+		pr_err("%s: alloc_chrdev_region failed (rc=%d)\n",
+		       __func__, rc);
+		goto out_err;
+	}
+
+	cdev_init(&vc_mem_cdev, &vc_mem_fops);
+	if ((rc = cdev_add(&vc_mem_cdev, vc_mem_devnum, 1)) != 0) {
+		pr_err("%s: cdev_add failed (rc=%d)\n", __func__, rc);
+		goto out_unregister;
+	}
+
+	vc_mem_class = class_create(THIS_MODULE, DRIVER_NAME);
+	if (IS_ERR(vc_mem_class)) {
+		rc = PTR_ERR(vc_mem_class);
+		pr_err("%s: class_create failed (rc=%d)\n", __func__, rc);
+		goto out_cdev_del;
+	}
+
+	dev = device_create(vc_mem_class, NULL, vc_mem_devnum, NULL,
+			    DRIVER_NAME);
+	if (IS_ERR(dev)) {
+		rc = PTR_ERR(dev);
+		pr_err("%s: device_create failed (rc=%d)\n", __func__, rc);
+		goto out_class_destroy;
+	}
+
+#ifdef CONFIG_DEBUG_FS
+	/* don't fail if the debug entries cannot be created */
+	vc_mem_debugfs_init(dev);
+#endif
+
+	vc_mem_inited = 1;
+	return 0;
+
+	device_destroy(vc_mem_class, vc_mem_devnum);
+
+      out_class_destroy:
+	class_destroy(vc_mem_class);
+	vc_mem_class = NULL;
+
+      out_cdev_del:
+	cdev_del(&vc_mem_cdev);
+
+      out_unregister:
+	unregister_chrdev_region(vc_mem_devnum, 1);
+
+      out_err:
+	return -1;
+}
+
+/****************************************************************************
+*
+*   vc_mem_exit
+*
+***************************************************************************/
+
+static void __exit
+vc_mem_exit(void)
+{
+	pr_debug("%s: called\n", __func__);
+
+	if (vc_mem_inited) {
+#if CONFIG_DEBUG_FS
+		vc_mem_debugfs_deinit();
+#endif
+		device_destroy(vc_mem_class, vc_mem_devnum);
+		class_destroy(vc_mem_class);
+		cdev_del(&vc_mem_cdev);
+		unregister_chrdev_region(vc_mem_devnum, 1);
+	}
+}
+
+module_init(vc_mem_init);
+module_exit(vc_mem_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Broadcom Corporation");
+
+module_param(phys_addr, uint, 0644);
+module_param(mem_size, uint, 0644);
+module_param(mem_base, uint, 0644);
+
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/armctrl.c linux-rpi/arch/arm/mach-bcm2709/armctrl.c
--- linux-3.18.10/arch/arm/mach-bcm2709/armctrl.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/armctrl.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,369 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/armctrl.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/io.h>
+#include <linux/version.h>
+#include <linux/syscore_ops.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+
+#include <asm/mach/irq.h>
+#include <mach/hardware.h>
+#include "armctrl.h"
+
+/* For support of kernels >= 3.0 assume only one VIC for now*/
+static unsigned int remap_irqs[(INTERRUPT_ARASANSDIO + 1) - INTERRUPT_JPEG] = {
+	INTERRUPT_VC_JPEG,
+	INTERRUPT_VC_USB,
+	INTERRUPT_VC_3D,
+	INTERRUPT_VC_DMA2,
+	INTERRUPT_VC_DMA3,
+	INTERRUPT_VC_I2C,
+	INTERRUPT_VC_SPI,
+	INTERRUPT_VC_I2SPCM,
+	INTERRUPT_VC_SDIO,
+	INTERRUPT_VC_UART,
+	INTERRUPT_VC_ARASANSDIO
+};
+
+static void armctrl_mask_irq(struct irq_data *d)
+{
+	static const unsigned int disables[4] = {
+		ARM_IRQ_DIBL1,
+		ARM_IRQ_DIBL2,
+		ARM_IRQ_DIBL3,
+		0
+	};
+	int i;
+	if (d->irq >= FIQ_START) {
+		writel(0, __io_address(ARM_IRQ_FAST));
+	} else if (d->irq >= IRQ_ARM_LOCAL_CNTPSIRQ && d->irq < IRQ_ARM_LOCAL_CNTPSIRQ + 4) {
+#if 1
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq) - IRQ_ARM_LOCAL_CNTPSIRQ;
+		for (i=0; i<4; i++) // i = raw_smp_processor_id(); //
+		{
+			unsigned int val =   readl(__io_address(ARM_LOCAL_TIMER_INT_CONTROL0 + 4*i));
+			writel(val &~ (1 << data), __io_address(ARM_LOCAL_TIMER_INT_CONTROL0 + 4*i));
+		}
+#endif
+	} else if (d->irq >= IRQ_ARM_LOCAL_MAILBOX0 && d->irq < IRQ_ARM_LOCAL_MAILBOX0 + 4) {
+#if 0
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq) - IRQ_ARM_LOCAL_MAILBOX0;
+		for (i=0; i<4; i++) {
+			unsigned int val = readl(__io_address(ARM_LOCAL_MAILBOX_INT_CONTROL0 + 4*i));
+			writel(val &~ (1 << data), __io_address(ARM_LOCAL_MAILBOX_INT_CONTROL0 + 4*i));
+		}
+#endif
+	} else if (d->irq >= ARM_IRQ1_BASE && d->irq < ARM_IRQ_LOCAL_BASE) {
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq);
+		writel(1 << (data & 0x1f), __io_address(disables[(data >> 5) & 0x3]));
+	} else if (d->irq == INTERRUPT_ARM_LOCAL_PMU_FAST) {
+		writel(0xf, __io_address(ARM_LOCAL_PM_ROUTING_CLR));
+	} else { printk("%s: %d\n", __func__, d->irq); BUG(); }
+}
+
+static void armctrl_unmask_irq(struct irq_data *d)
+{
+	static const unsigned int enables[4] = {
+		ARM_IRQ_ENBL1,
+		ARM_IRQ_ENBL2,
+		ARM_IRQ_ENBL3,
+		0
+	};
+	int i;
+	if (d->irq >= FIQ_START) {
+		unsigned int data;
+		if (num_online_cpus() > 1) {
+			data = readl(__io_address(ARM_LOCAL_GPU_INT_ROUTING));
+			data &= ~0xc;
+			data |= (1 << 2);
+			writel(data, __io_address(ARM_LOCAL_GPU_INT_ROUTING));
+		}
+		/* Unmask in ARMCTRL block after routing it properly */
+		data = (unsigned int)irq_get_chip_data(d->irq) - FIQ_START;
+		writel(0x80 | data, __io_address(ARM_IRQ_FAST));
+	} else if (d->irq >= IRQ_ARM_LOCAL_CNTPSIRQ && d->irq < IRQ_ARM_LOCAL_CNTPSIRQ + 4) {
+#if 1
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq) - IRQ_ARM_LOCAL_CNTPSIRQ;
+		for (i=0; i<4; i++) // i = raw_smp_processor_id();
+		{
+			unsigned int val =  readl(__io_address(ARM_LOCAL_TIMER_INT_CONTROL0 + 4*i));
+			writel(val | (1 << data), __io_address(ARM_LOCAL_TIMER_INT_CONTROL0 + 4*i));
+		}
+#endif
+	} else if (d->irq >= IRQ_ARM_LOCAL_MAILBOX0 && d->irq < IRQ_ARM_LOCAL_MAILBOX0 + 4) {
+#if 0
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq) - IRQ_ARM_LOCAL_MAILBOX0;
+		for (i=0; i<4; i++) {
+			unsigned int val = readl(__io_address(ARM_LOCAL_MAILBOX_INT_CONTROL0 + 4*i));
+			writel(val | (1 << data), __io_address(ARM_LOCAL_MAILBOX_INT_CONTROL0 + 4*i));
+		}
+#endif
+	} else if (d->irq >= ARM_IRQ1_BASE && d->irq < ARM_IRQ_LOCAL_BASE) {
+		unsigned int data = (unsigned int)irq_get_chip_data(d->irq);
+		writel(1 << (data & 0x1f), __io_address(enables[(data >> 5) & 0x3]));
+	} else if (d->irq == INTERRUPT_ARM_LOCAL_PMU_FAST) {
+		writel(0xf, __io_address(ARM_LOCAL_PM_ROUTING_SET));
+	} else { printk("%s: %d\n", __func__, d->irq); BUG(); }
+}
+
+#ifdef CONFIG_OF
+
+#define NR_IRQS_BANK0           21
+#define NR_BANKS                4
+#define IRQS_PER_BANK           32
+
+/* from drivers/irqchip/irq-bcm2835.c */
+static int armctrl_xlate(struct irq_domain *d, struct device_node *ctrlr,
+        const u32 *intspec, unsigned int intsize,
+        unsigned long *out_hwirq, unsigned int *out_type)
+{
+        if (WARN_ON(intsize != 2))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[0] >= NR_BANKS))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[1] >= IRQS_PER_BANK))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[0] == 0 && intspec[1] >= NR_IRQS_BANK0))
+                return -EINVAL;
+
+        if (WARN_ON(intspec[0] == 3 && intspec[1] > 3 && intspec[1] != 5 && intspec[1] != 9))
+                return -EINVAL;
+
+	if (intspec[0] == 0)
+		*out_hwirq = ARM_IRQ0_BASE + intspec[1];
+	else if (intspec[0] == 1)
+		*out_hwirq = ARM_IRQ1_BASE + intspec[1];
+	else if (intspec[0] == 2)
+		*out_hwirq = ARM_IRQ2_BASE + intspec[1];
+	else
+		*out_hwirq = ARM_IRQ_LOCAL_BASE + intspec[1];
+
+	/* reverse remap_irqs[] */
+	switch (*out_hwirq) {
+	case INTERRUPT_VC_JPEG:
+		*out_hwirq = INTERRUPT_JPEG;
+		break;
+	case INTERRUPT_VC_USB:
+		*out_hwirq = INTERRUPT_USB;
+		break;
+	case INTERRUPT_VC_3D:
+		*out_hwirq = INTERRUPT_3D;
+		break;
+	case INTERRUPT_VC_DMA2:
+		*out_hwirq = INTERRUPT_DMA2;
+		break;
+	case INTERRUPT_VC_DMA3:
+		*out_hwirq = INTERRUPT_DMA3;
+		break;
+	case INTERRUPT_VC_I2C:
+		*out_hwirq = INTERRUPT_I2C;
+		break;
+	case INTERRUPT_VC_SPI:
+		*out_hwirq = INTERRUPT_SPI;
+		break;
+	case INTERRUPT_VC_I2SPCM:
+		*out_hwirq = INTERRUPT_I2SPCM;
+		break;
+	case INTERRUPT_VC_SDIO:
+		*out_hwirq = INTERRUPT_SDIO;
+		break;
+	case INTERRUPT_VC_UART:
+		*out_hwirq = INTERRUPT_UART;
+		break;
+	case INTERRUPT_VC_ARASANSDIO:
+		*out_hwirq = INTERRUPT_ARASANSDIO;
+		break;
+	}
+
+        *out_type = IRQ_TYPE_NONE;
+        return 0;
+}
+
+static struct irq_domain_ops armctrl_ops = {
+        .xlate = armctrl_xlate
+};
+
+void __init armctrl_dt_init(void)
+{
+	struct device_node *np;
+	struct irq_domain *domain;
+
+	np = of_find_compatible_node(NULL, NULL, "brcm,bcm2708-armctrl-ic");
+	if (!np)
+		return;
+
+	domain = irq_domain_add_legacy(np, BCM2708_ALLOC_IRQS,
+					IRQ_ARMCTRL_START, 0,
+					&armctrl_ops, NULL);
+        WARN_ON(!domain);
+}
+#else
+void __init armctrl_dt_init(void) { }
+#endif /* CONFIG_OF */
+
+#if defined(CONFIG_PM)
+
+/* for kernels 3.xx use the new syscore_ops apis but for older kernels use the sys dev class */
+
+/* Static defines
+ * struct armctrl_device - VIC PM device (< 3.xx)
+ * @sysdev: The system device which is registered. (< 3.xx)
+ * @irq: The IRQ number for the base of the VIC.
+ * @base: The register base for the VIC.
+ * @resume_sources: A bitmask of interrupts for resume.
+ * @resume_irqs: The IRQs enabled for resume.
+ * @int_select: Save for VIC_INT_SELECT.
+ * @int_enable: Save for VIC_INT_ENABLE.
+ * @soft_int: Save for VIC_INT_SOFT.
+ * @protect: Save for VIC_PROTECT.
+ */
+struct armctrl_info {
+	void __iomem *base;
+	int irq;
+	u32 resume_sources;
+	u32 resume_irqs;
+	u32 int_select;
+	u32 int_enable;
+	u32 soft_int;
+	u32 protect;
+} armctrl;
+
+static int armctrl_suspend(void)
+{
+	return 0;
+}
+
+static void armctrl_resume(void)
+{
+	return;
+}
+
+/**
+ * armctrl_pm_register - Register a VIC for later power management control
+ * @base: The base address of the VIC.
+ * @irq: The base IRQ for the VIC.
+ * @resume_sources: bitmask of interrupts allowed for resume sources.
+ *
+ * For older kernels (< 3.xx) do -
+ * Register the VIC with the system device tree so that it can be notified
+ * of suspend and resume requests and ensure that the correct actions are
+ * taken to re-instate the settings on resume.
+ */
+static void __init armctrl_pm_register(void __iomem * base, unsigned int irq,
+				       u32 resume_sources)
+{
+	armctrl.base = base;
+	armctrl.resume_sources = resume_sources;
+	armctrl.irq = irq;
+}
+
+static int armctrl_set_wake(struct irq_data *d, unsigned int on)
+{
+	unsigned int off = d->irq & 31;
+	u32 bit = 1 << off;
+
+	if (!(bit & armctrl.resume_sources))
+		return -EINVAL;
+
+	if (on)
+		armctrl.resume_irqs |= bit;
+	else
+		armctrl.resume_irqs &= ~bit;
+
+	return 0;
+}
+
+#else
+static inline void armctrl_pm_register(void __iomem * base, unsigned int irq,
+				       u32 arg1)
+{
+}
+
+#define armctrl_suspend NULL
+#define armctrl_resume NULL
+#define armctrl_set_wake NULL
+#endif /* CONFIG_PM */
+
+static struct syscore_ops armctrl_syscore_ops = {
+	.suspend = armctrl_suspend,
+	.resume = armctrl_resume,
+};
+
+/**
+ * armctrl_syscore_init - initicall to register VIC pm functions
+ *
+ * This is called via late_initcall() to register
+ * the resources for the VICs due to the early
+ * nature of the VIC's registration.
+*/
+static int __init armctrl_syscore_init(void)
+{
+	register_syscore_ops(&armctrl_syscore_ops);
+	return 0;
+}
+
+late_initcall(armctrl_syscore_init);
+
+static struct irq_chip armctrl_chip = {
+	.name = "ARMCTRL",
+	.irq_ack = NULL,
+	.irq_mask = armctrl_mask_irq,
+	.irq_unmask = armctrl_unmask_irq,
+	.irq_set_wake = armctrl_set_wake,
+};
+
+/**
+ * armctrl_init - initialise a vectored interrupt controller
+ * @base: iomem base address
+ * @irq_start: starting interrupt number, must be muliple of 32
+ * @armctrl_sources: bitmask of interrupt sources to allow
+ * @resume_sources: bitmask of interrupt sources to allow for resume
+ */
+int __init armctrl_init(void __iomem * base, unsigned int irq_start,
+			u32 armctrl_sources, u32 resume_sources)
+{
+	unsigned int irq;
+
+	for (irq = 0; irq < BCM2708_ALLOC_IRQS; irq++) {
+		unsigned int data = irq;
+		if (irq >= INTERRUPT_JPEG && irq <= INTERRUPT_ARASANSDIO)
+			data = remap_irqs[irq - INTERRUPT_JPEG];
+		if (irq >= IRQ_ARM_LOCAL_CNTPSIRQ && irq <= IRQ_ARM_LOCAL_TIMER) {
+			irq_set_percpu_devid(irq);
+			irq_set_chip_and_handler(irq, &armctrl_chip, handle_percpu_devid_irq);
+			set_irq_flags(irq, IRQF_VALID | IRQF_NOAUTOEN);
+                } else {
+			irq_set_chip_and_handler(irq, &armctrl_chip, handle_level_irq);
+			set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_DISABLED);
+                }
+		irq_set_chip_data(irq, (void *)data);
+	}
+
+	armctrl_pm_register(base, irq_start, resume_sources);
+	init_FIQ(FIQ_START);
+	armctrl_dt_init();
+	return 0;
+}
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/armctrl.h linux-rpi/arch/arm/mach-bcm2709/armctrl.h
--- linux-3.18.10/arch/arm/mach-bcm2709/armctrl.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/armctrl.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,27 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/armctrl.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __BCM2708_ARMCTRL_H
+#define __BCM2708_ARMCTRL_H
+
+extern int __init armctrl_init(void __iomem * base, unsigned int irq_start,
+			       u32 armctrl_sources, u32 resume_sources);
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/bcm2708_gpio.c linux-rpi/arch/arm/mach-bcm2709/bcm2708_gpio.c
--- linux-3.18.10/arch/arm/mach-bcm2709/bcm2708_gpio.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/bcm2708_gpio.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,426 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/bcm2708_gpio.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <mach/gpio.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <mach/platform.h>
+#include <linux/pinctrl/consumer.h>
+
+#include <linux/platform_data/bcm2708.h>
+
+#define BCM_GPIO_DRIVER_NAME "bcm2708_gpio"
+#define DRIVER_NAME BCM_GPIO_DRIVER_NAME
+#define BCM_GPIO_USE_IRQ 1
+
+#define GPIOFSEL(x)  (0x00+(x)*4)
+#define GPIOSET(x)   (0x1c+(x)*4)
+#define GPIOCLR(x)   (0x28+(x)*4)
+#define GPIOLEV(x)   (0x34+(x)*4)
+#define GPIOEDS(x)   (0x40+(x)*4)
+#define GPIOREN(x)   (0x4c+(x)*4)
+#define GPIOFEN(x)   (0x58+(x)*4)
+#define GPIOHEN(x)   (0x64+(x)*4)
+#define GPIOLEN(x)   (0x70+(x)*4)
+#define GPIOAREN(x)  (0x7c+(x)*4)
+#define GPIOAFEN(x)  (0x88+(x)*4)
+#define GPIOUD(x)    (0x94+(x)*4)
+#define GPIOUDCLK(x) (0x98+(x)*4)
+
+#define GPIO_BANKS 2
+
+enum { GPIO_FSEL_INPUT, GPIO_FSEL_OUTPUT,
+	GPIO_FSEL_ALT5, GPIO_FSEL_ALT_4,
+	GPIO_FSEL_ALT0, GPIO_FSEL_ALT1,
+	GPIO_FSEL_ALT2, GPIO_FSEL_ALT3,
+};
+
+	/* Each of the two spinlocks protects a different set of hardware
+	 * regiters and data structurs. This decouples the code of the IRQ from
+	 * the GPIO code. This also makes the case of a GPIO routine call from
+	 * the IRQ code simpler.
+	 */
+static DEFINE_SPINLOCK(lock);	/* GPIO registers */
+
+struct bcm2708_gpio {
+	struct list_head list;
+	void __iomem *base;
+	struct gpio_chip gc;
+	unsigned long rising[(BCM2708_NR_GPIOS + 31) / 32];
+	unsigned long falling[(BCM2708_NR_GPIOS + 31) / 32];
+	unsigned long high[(BCM2708_NR_GPIOS + 31) / 32];
+	unsigned long low[(BCM2708_NR_GPIOS + 31) / 32];
+};
+
+static int bcm2708_set_function(struct gpio_chip *gc, unsigned offset,
+				int function)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned long flags;
+	unsigned gpiodir;
+	unsigned gpio_bank = offset / 10;
+	unsigned gpio_field_offset = (offset - 10 * gpio_bank) * 3;
+
+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_set_function %p (%d,%d)\n", gc, offset, function);
+	if (offset >= BCM2708_NR_GPIOS)
+		return -EINVAL;
+
+	spin_lock_irqsave(&lock, flags);
+
+	gpiodir = readl(gpio->base + GPIOFSEL(gpio_bank));
+	gpiodir &= ~(7 << gpio_field_offset);
+	gpiodir |= function << gpio_field_offset;
+	writel(gpiodir, gpio->base + GPIOFSEL(gpio_bank));
+	spin_unlock_irqrestore(&lock, flags);
+	gpiodir = readl(gpio->base + GPIOFSEL(gpio_bank));
+
+	return 0;
+}
+
+static int bcm2708_gpio_dir_in(struct gpio_chip *gc, unsigned offset)
+{
+	return bcm2708_set_function(gc, offset, GPIO_FSEL_INPUT);
+}
+
+static void bcm2708_gpio_set(struct gpio_chip *gc, unsigned offset, int value);
+static int bcm2708_gpio_dir_out(struct gpio_chip *gc, unsigned offset,
+				int value)
+{
+	int ret;
+	ret = bcm2708_set_function(gc, offset, GPIO_FSEL_OUTPUT);
+	if (ret >= 0)
+		bcm2708_gpio_set(gc, offset, value);
+	return ret;
+}
+
+static int bcm2708_gpio_get(struct gpio_chip *gc, unsigned offset)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned gpio_bank = offset / 32;
+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
+	unsigned lev;
+
+	if (offset >= BCM2708_NR_GPIOS)
+		return 0;
+	lev = readl(gpio->base + GPIOLEV(gpio_bank));
+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_get %p (%d)=%d\n", gc, offset, 0x1 & (lev>>gpio_field_offset));
+	return 0x1 & (lev >> gpio_field_offset);
+}
+
+static void bcm2708_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned gpio_bank = offset / 32;
+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_set %p (%d=%d)\n", gc, offset, value);
+	if (offset >= BCM2708_NR_GPIOS)
+		return;
+	if (value)
+		writel(1 << gpio_field_offset, gpio->base + GPIOSET(gpio_bank));
+	else
+		writel(1 << gpio_field_offset, gpio->base + GPIOCLR(gpio_bank));
+}
+
+/**********************
+ * extension to configure pullups
+ */
+int bcm2708_gpio_setpull(struct gpio_chip *gc, unsigned offset,
+		bcm2708_gpio_pull_t value)
+{
+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
+	unsigned gpio_bank = offset / 32;
+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
+
+	if (offset >= BCM2708_NR_GPIOS)
+		return -EINVAL;
+
+	switch (value) {
+	case BCM2708_PULL_UP:
+		writel(2, gpio->base + GPIOUD(0));
+		break;
+	case BCM2708_PULL_DOWN:
+		writel(1, gpio->base + GPIOUD(0));
+		break;
+	case BCM2708_PULL_OFF:
+		writel(0, gpio->base + GPIOUD(0));
+		break;
+	}
+
+	udelay(5);
+	writel(1 << gpio_field_offset, gpio->base + GPIOUDCLK(gpio_bank));
+	udelay(5);
+	writel(0, gpio->base + GPIOUD(0));
+	writel(0 << gpio_field_offset, gpio->base + GPIOUDCLK(gpio_bank));
+
+	return 0;
+}
+EXPORT_SYMBOL(bcm2708_gpio_setpull);
+
+/*************************************************************************************************************************
+ * bcm2708 GPIO IRQ
+ */
+
+#if BCM_GPIO_USE_IRQ
+
+static int bcm2708_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
+{
+	return gpio_to_irq(gpio);
+}
+
+static int bcm2708_gpio_irq_set_type(struct irq_data *d, unsigned type)
+{
+	unsigned irq = d->irq;
+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
+	unsigned gn = irq_to_gpio(irq);
+	unsigned gb = gn / 32;
+	unsigned go = gn % 32;
+
+	gpio->rising[gb]  &= ~(1 << go);
+	gpio->falling[gb] &= ~(1 << go);
+	gpio->high[gb]    &= ~(1 << go);
+	gpio->low[gb]     &= ~(1 << go);
+
+	if (type & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING | IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
+		return -EINVAL;
+
+	if (type & IRQ_TYPE_EDGE_RISING)
+		gpio->rising[gb] |= (1 << go);
+	if (type & IRQ_TYPE_EDGE_FALLING)
+		gpio->falling[gb] |= (1 << go);
+	if (type & IRQ_TYPE_LEVEL_HIGH)
+		gpio->high[gb] |= (1 << go);
+	if (type & IRQ_TYPE_LEVEL_LOW)
+		gpio->low[gb] |= (1 << go);
+	return 0;
+}
+
+static void bcm2708_gpio_irq_mask(struct irq_data *d)
+{
+	unsigned irq = d->irq;
+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
+	unsigned gn = irq_to_gpio(irq);
+	unsigned gb = gn / 32;
+	unsigned long rising  = readl(gpio->base + GPIOREN(gb));
+	unsigned long falling = readl(gpio->base + GPIOFEN(gb));
+	unsigned long high    = readl(gpio->base + GPIOHEN(gb));
+	unsigned long low     = readl(gpio->base + GPIOLEN(gb));
+
+	gn = gn % 32;
+
+	writel(rising  & ~(1 << gn), gpio->base + GPIOREN(gb));
+	writel(falling & ~(1 << gn), gpio->base + GPIOFEN(gb));
+	writel(high    & ~(1 << gn), gpio->base + GPIOHEN(gb));
+	writel(low     & ~(1 << gn), gpio->base + GPIOLEN(gb));
+}
+
+static void bcm2708_gpio_irq_unmask(struct irq_data *d)
+{
+	unsigned irq = d->irq;
+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
+	unsigned gn = irq_to_gpio(irq);
+	unsigned gb = gn / 32;
+	unsigned go = gn % 32;
+	unsigned long rising  = readl(gpio->base + GPIOREN(gb));
+	unsigned long falling = readl(gpio->base + GPIOFEN(gb));
+	unsigned long high    = readl(gpio->base + GPIOHEN(gb));
+	unsigned long low     = readl(gpio->base + GPIOLEN(gb));
+
+	if (gpio->rising[gb] & (1 << go)) {
+		writel(rising |  (1 << go), gpio->base + GPIOREN(gb));
+	} else {
+		writel(rising & ~(1 << go), gpio->base + GPIOREN(gb));
+	}
+
+	if (gpio->falling[gb] & (1 << go)) {
+		writel(falling |  (1 << go), gpio->base + GPIOFEN(gb));
+	} else {
+		writel(falling & ~(1 << go), gpio->base + GPIOFEN(gb));
+	}
+
+	if (gpio->high[gb] & (1 << go)) {
+		writel(high |  (1 << go), gpio->base + GPIOHEN(gb));
+	} else {
+		writel(high & ~(1 << go), gpio->base + GPIOHEN(gb));
+	}
+
+	if (gpio->low[gb] & (1 << go)) {
+		writel(low |  (1 << go), gpio->base + GPIOLEN(gb));
+	} else {
+		writel(low & ~(1 << go), gpio->base + GPIOLEN(gb));
+	}
+}
+
+static struct irq_chip bcm2708_irqchip = {
+	.name = "GPIO",
+	.irq_enable = bcm2708_gpio_irq_unmask,
+	.irq_disable = bcm2708_gpio_irq_mask,
+	.irq_unmask = bcm2708_gpio_irq_unmask,
+	.irq_mask = bcm2708_gpio_irq_mask,
+	.irq_set_type = bcm2708_gpio_irq_set_type,
+};
+
+static irqreturn_t bcm2708_gpio_interrupt(int irq, void *dev_id)
+{
+	unsigned long edsr;
+	unsigned bank;
+	int i;
+	unsigned gpio;
+	unsigned level_bits;
+	struct bcm2708_gpio *gpio_data = dev_id;
+
+	for (bank = 0; bank < GPIO_BANKS; bank++) {
+		edsr = readl(__io_address(GPIO_BASE) + GPIOEDS(bank));
+		level_bits = gpio_data->high[bank] | gpio_data->low[bank];
+
+		for_each_set_bit(i, &edsr, 32) {
+			gpio = i + bank * 32;
+			/* ack edge triggered IRQs immediately */
+			if (!(level_bits & (1<<i)))
+				writel(1<<i,
+				       __io_address(GPIO_BASE) + GPIOEDS(bank));
+			generic_handle_irq(gpio_to_irq(gpio));
+			/* ack level triggered IRQ after handling them */
+			if (level_bits & (1<<i))
+				writel(1<<i,
+				       __io_address(GPIO_BASE) + GPIOEDS(bank));
+		}
+	}
+	return IRQ_HANDLED;
+}
+
+static struct irqaction bcm2708_gpio_irq = {
+	.name = "BCM2708 GPIO catchall handler",
+	.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+	.handler = bcm2708_gpio_interrupt,
+};
+
+static void bcm2708_gpio_irq_init(struct bcm2708_gpio *ucb)
+{
+	unsigned irq;
+
+	ucb->gc.to_irq = bcm2708_gpio_to_irq;
+
+	for (irq = GPIO_IRQ_START; irq < (GPIO_IRQ_START + GPIO_IRQS); irq++) {
+		irq_set_chip_data(irq, ucb);
+		irq_set_chip_and_handler(irq, &bcm2708_irqchip,
+					 handle_simple_irq);
+		set_irq_flags(irq, IRQF_VALID);
+	}
+
+	bcm2708_gpio_irq.dev_id = ucb;
+	setup_irq(IRQ_GPIO3, &bcm2708_gpio_irq);
+}
+
+#else
+
+static void bcm2708_gpio_irq_init(struct bcm2708_gpio *ucb)
+{
+}
+
+#endif /* #if BCM_GPIO_USE_IRQ ***************************************************************************************************************** */
+
+static int bcm2708_gpio_probe(struct platform_device *dev)
+{
+	struct bcm2708_gpio *ucb;
+	struct resource *res;
+	int bank;
+	int err = 0;
+
+	printk(KERN_INFO DRIVER_NAME ": bcm2708_gpio_probe %p\n", dev);
+
+	ucb = kzalloc(sizeof(*ucb), GFP_KERNEL);
+	if (NULL == ucb) {
+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
+		       "mailbox memory\n");
+		err = -ENOMEM;
+		goto err;
+	}
+
+	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+
+	platform_set_drvdata(dev, ucb);
+	ucb->base = __io_address(GPIO_BASE);
+
+	ucb->gc.label = "bcm2708_gpio";
+	ucb->gc.base = 0;
+	ucb->gc.ngpio = BCM2708_NR_GPIOS;
+	ucb->gc.owner = THIS_MODULE;
+
+	ucb->gc.direction_input = bcm2708_gpio_dir_in;
+	ucb->gc.direction_output = bcm2708_gpio_dir_out;
+	ucb->gc.get = bcm2708_gpio_get;
+	ucb->gc.set = bcm2708_gpio_set;
+	ucb->gc.can_sleep = 0;
+
+	for (bank = 0; bank < GPIO_BANKS; bank++) {
+		writel(0, ucb->base + GPIOREN(bank));
+		writel(0, ucb->base + GPIOFEN(bank));
+		writel(0, ucb->base + GPIOHEN(bank));
+		writel(0, ucb->base + GPIOLEN(bank));
+		writel(0, ucb->base + GPIOAREN(bank));
+		writel(0, ucb->base + GPIOAFEN(bank));
+		writel(~0, ucb->base + GPIOEDS(bank));
+	}
+
+	bcm2708_gpio_irq_init(ucb);
+
+	err = gpiochip_add(&ucb->gc);
+
+err:
+	return err;
+
+}
+
+static int bcm2708_gpio_remove(struct platform_device *dev)
+{
+	int err = 0;
+	struct bcm2708_gpio *ucb = platform_get_drvdata(dev);
+
+	printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_remove %p\n", dev);
+
+	gpiochip_remove(&ucb->gc);
+
+	platform_set_drvdata(dev, NULL);
+	kfree(ucb);
+
+	return err;
+}
+
+static struct platform_driver bcm2708_gpio_driver = {
+	.probe = bcm2708_gpio_probe,
+	.remove = bcm2708_gpio_remove,
+	.driver = {
+		   .name = "bcm2708_gpio"},
+};
+
+static int __init bcm2708_gpio_init(void)
+{
+	return platform_driver_register(&bcm2708_gpio_driver);
+}
+
+static void __exit bcm2708_gpio_exit(void)
+{
+	platform_driver_unregister(&bcm2708_gpio_driver);
+}
+
+module_init(bcm2708_gpio_init);
+module_exit(bcm2708_gpio_exit);
+
+MODULE_DESCRIPTION("Broadcom BCM2708 GPIO driver");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/bcm2709.c linux-rpi/arch/arm/mach-bcm2709/bcm2709.c
--- linux-3.18.10/arch/arm/mach-bcm2709/bcm2709.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/bcm2709.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,1297 @@
+/*
+ *  linux/arch/arm/mach-bcm2709/bcm2709.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/serial_8250.h>
+#include <linux/platform_device.h>
+#include <linux/syscore_ops.h>
+#include <linux/interrupt.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/clcd.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/clockchips.h>
+#include <linux/cnt32_to_63.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/spi/spi.h>
+#include <linux/gpio/machine.h>
+#include <linux/w1-gpio.h>
+#include <linux/pps-gpio.h>
+
+#include <linux/version.h>
+#include <linux/clkdev.h>
+#include <asm/system_info.h>
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <linux/leds.h>
+#include <asm/mach-types.h>
+#include <asm/cputype.h>
+#include <linux/sched_clock.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+#include <asm/mach/map.h>
+
+#include <mach/timex.h>
+#include <mach/dma.h>
+#include <mach/vcio.h>
+#include <mach/system.h>
+
+#include <linux/delay.h>
+
+#include "bcm2709.h"
+#include "armctrl.h"
+
+#ifdef CONFIG_BCM_VC_CMA
+#include <linux/broadcom/vc_cma.h>
+#endif
+
+//#define SYSTEM_TIMER
+
+/* Effectively we have an IOMMU (ARM<->VideoCore map) that is set up to
+ * give us IO access only to 64Mbytes of physical memory (26 bits).  We could
+ * represent this window by setting our dmamasks to 26 bits but, in fact
+ * we're not going to use addresses outside this range (they're not in real
+ * memory) so we don't bother.
+ *
+ * In the future we might include code to use this IOMMU to remap other
+ * physical addresses onto VideoCore memory then the use of 32-bits would be
+ * more legitimate.
+ */
+#define DMA_MASK_BITS_COMMON 32
+
+// use GPIO 4 for the one-wire GPIO pin, if enabled
+#define W1_GPIO 4
+// ensure one-wire GPIO pullup is disabled by default
+#define W1_PULLUP -1
+
+/* command line parameters */
+static unsigned boardrev, serial;
+static unsigned uart_clock = UART0_CLOCK;
+static unsigned disk_led_gpio = 16;
+static unsigned disk_led_active_low = 1;
+static unsigned reboot_part = 0;
+static unsigned w1_gpio_pin = W1_GPIO;
+static unsigned w1_gpio_pullup = W1_PULLUP;
+static int pps_gpio_pin = -1;
+static bool vc_i2c_override = false;
+
+static unsigned use_dt = 0;
+
+static void __init bcm2709_init_led(void);
+
+void __init bcm2709_init_irq(void)
+{
+	armctrl_init(__io_address(ARMCTRL_IC_BASE), 0, 0, 0);
+}
+
+static struct map_desc bcm2709_io_desc[] __initdata = {
+	{
+	 .virtual = IO_ADDRESS(ARMCTRL_BASE),
+	 .pfn = __phys_to_pfn(ARMCTRL_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(UART0_BASE),
+	 .pfn = __phys_to_pfn(UART0_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(UART1_BASE),
+	 .pfn = __phys_to_pfn(UART1_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(DMA_BASE),
+	 .pfn = __phys_to_pfn(DMA_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(MCORE_BASE),
+	 .pfn = __phys_to_pfn(MCORE_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(ST_BASE),
+	 .pfn = __phys_to_pfn(ST_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(USB_BASE),
+	 .pfn = __phys_to_pfn(USB_BASE),
+	 .length = SZ_128K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(PM_BASE),
+	 .pfn = __phys_to_pfn(PM_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(GPIO_BASE),
+	 .pfn = __phys_to_pfn(GPIO_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+	{
+	 .virtual = IO_ADDRESS(ARM_LOCAL_BASE),
+	 .pfn = __phys_to_pfn(ARM_LOCAL_BASE),
+	 .length = SZ_4K,
+	 .type = MT_DEVICE},
+};
+
+void __init bcm2709_map_io(void)
+{
+	iotable_init(bcm2709_io_desc, ARRAY_SIZE(bcm2709_io_desc));
+}
+
+#ifdef SYSTEM_TIMER
+
+/* The STC is a free running counter that increments at the rate of 1MHz */
+#define STC_FREQ_HZ 1000000
+
+static inline uint32_t timer_read(void)
+{
+	/* STC: a free running counter that increments at the rate of 1MHz */
+	return readl(__io_address(ST_BASE + 0x04));
+}
+
+static unsigned long bcm2709_read_current_timer(void)
+{
+	return timer_read();
+}
+
+static u64 notrace bcm2709_read_sched_clock(void)
+{
+	return timer_read();
+}
+
+static cycle_t clksrc_read(struct clocksource *cs)
+{
+	return timer_read();
+}
+
+static struct clocksource clocksource_stc = {
+	.name = "stc",
+	.rating = 300,
+	.read = clksrc_read,
+	.mask = CLOCKSOURCE_MASK(32),
+	.flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+unsigned long frc_clock_ticks32(void)
+{
+	return timer_read();
+}
+
+static void __init bcm2709_clocksource_init(void)
+{
+	if (clocksource_register_hz(&clocksource_stc, STC_FREQ_HZ)) {
+		printk(KERN_ERR "timer: failed to initialize clock "
+		       "source %s\n", clocksource_stc.name);
+	}
+}
+#endif
+
+struct clk __init *bcm2709_clk_register(const char *name, unsigned long fixed_rate)
+{
+	struct clk *clk;
+
+	clk = clk_register_fixed_rate(NULL, name, NULL, CLK_IS_ROOT,
+						fixed_rate);
+	if (IS_ERR(clk))
+		pr_err("%s not registered\n", name);
+
+	return clk;
+}
+
+void __init bcm2709_register_clkdev(struct clk *clk, const char *name)
+{
+	int ret;
+
+	ret = clk_register_clkdev(clk, NULL, name);
+	if (ret)
+		pr_err("%s alias not registered\n", name);
+}
+
+void __init bcm2709_init_clocks(void)
+{
+	struct clk *clk;
+
+	clk = bcm2709_clk_register("uart0_clk", uart_clock);
+	bcm2709_register_clkdev(clk, "dev:f1");
+
+	clk = bcm2709_clk_register("sdhost_clk", 250000000);
+	bcm2709_register_clkdev(clk, "bcm2708_spi.0");
+	bcm2709_register_clkdev(clk, "bcm2708_i2c.0");
+	bcm2709_register_clkdev(clk, "bcm2708_i2c.1");
+}
+
+#define UART0_IRQ	{ IRQ_UART, 0 /*NO_IRQ*/ }
+#define UART0_DMA	{ 15, 14 }
+
+AMBA_DEVICE(uart0, "dev:f1", UART0, NULL);
+
+static struct amba_device *amba_devs[] __initdata = {
+	&uart0_device,
+};
+
+static struct resource bcm2708_dmaman_resources[] = {
+	{
+	 .start = DMA_BASE,
+	 .end = DMA_BASE + SZ_4K - 1,
+	 .flags = IORESOURCE_MEM,
+	 }
+};
+
+static struct platform_device bcm2708_dmaman_device = {
+	.name = BCM_DMAMAN_DRIVER_NAME,
+	.id = 0,		/* first bcm2708_dma */
+	.resource = bcm2708_dmaman_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_dmaman_resources),
+};
+
+#if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
+static struct w1_gpio_platform_data w1_gpio_pdata = {
+	.pin = W1_GPIO,
+        .ext_pullup_enable_pin = W1_PULLUP,
+	.is_open_drain = 0,
+};
+
+static struct platform_device w1_device = {
+	.name = "w1-gpio",
+	.id = -1,
+	.dev.platform_data = &w1_gpio_pdata,
+};
+#endif
+
+static struct pps_gpio_platform_data pps_gpio_info = {
+	.assert_falling_edge = false,
+	.capture_clear = false,
+	.gpio_pin = -1,
+	.gpio_label = "PPS",
+};
+
+static struct platform_device pps_gpio_device = {
+	.name = "pps-gpio",
+	.id = PLATFORM_DEVID_NONE,
+	.dev.platform_data = &pps_gpio_info,
+};
+
+static u64 fb_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_fb_device = {
+	.name = "bcm2708_fb",
+	.id = -1,		/* only one bcm2708_fb */
+	.resource = NULL,
+	.num_resources = 0,
+	.dev = {
+		.dma_mask = &fb_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+
+static struct plat_serial8250_port bcm2708_uart1_platform_data[] = {
+	{
+	 .mapbase = UART1_BASE + 0x40,
+	 .irq = IRQ_AUX,
+	 .uartclk = 125000000,
+	 .regshift = 2,
+	 .iotype = UPIO_MEM,
+	 .flags = UPF_FIXED_TYPE | UPF_IOREMAP | UPF_SKIP_TEST,
+	 .type = PORT_8250,
+	 },
+	{},
+};
+
+static struct platform_device bcm2708_uart1_device = {
+	.name = "serial8250",
+	.id = PLAT8250_DEV_PLATFORM,
+	.dev = {
+		.platform_data = bcm2708_uart1_platform_data,
+		},
+};
+
+static struct resource bcm2708_usb_resources[] = {
+	[0] = {
+	       .start = USB_BASE,
+	       .end = USB_BASE + SZ_128K - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+	[1] = {
+		.start = MPHI_BASE,
+		.end = MPHI_BASE + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+	      },
+	[2] = {
+	       .start = IRQ_HOSTPORT,
+	       .end = IRQ_HOSTPORT,
+	       .flags = IORESOURCE_IRQ,
+	       },
+	[3] = {
+		.start = IRQ_USB,
+		.end = IRQ_USB,
+		.flags = IORESOURCE_IRQ,
+		},
+	[4] = {
+		.start = ARM_LOCAL_BASE,
+		.end = ARM_LOCAL_BASE + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+		},
+	[5] = {
+		.start = IRQ_ARM_LOCAL_MAILBOX1,
+		.end = IRQ_ARM_LOCAL_MAILBOX1,
+		.flags = IORESOURCE_IRQ
+	},
+};
+
+
+static u64 usb_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_usb_device = {
+	.name = "bcm2708_usb",
+	.id = -1,		/* only one bcm2708_usb */
+	.resource = bcm2708_usb_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_usb_resources),
+	.dev = {
+		.dma_mask = &usb_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+
+static struct resource bcm2708_vcio_resources[] = {
+	[0] = {			/* mailbox/semaphore/doorbell access */
+	       .start = MCORE_BASE,
+	       .end = MCORE_BASE + SZ_4K - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+};
+
+static u64 vcio_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_vcio_device = {
+	.name = BCM_VCIO_DRIVER_NAME,
+	.id = -1,		/* only one VideoCore I/O area */
+	.resource = bcm2708_vcio_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_vcio_resources),
+	.dev = {
+		.dma_mask = &vcio_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+
+#ifdef CONFIG_BCM2708_GPIO
+#define BCM_GPIO_DRIVER_NAME "bcm2708_gpio"
+
+static struct resource bcm2708_gpio_resources[] = {
+	[0] = {			/* general purpose I/O */
+	       .start = GPIO_BASE,
+	       .end = GPIO_BASE + SZ_4K - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+};
+
+static u64 gpio_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_gpio_device = {
+	.name = BCM_GPIO_DRIVER_NAME,
+	.id = -1,		/* only one VideoCore I/O area */
+	.resource = bcm2708_gpio_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_gpio_resources),
+	.dev = {
+		.dma_mask = &gpio_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+#endif
+
+#ifdef SYSTEM_TIMER
+static struct resource bcm2708_systemtimer_resources[] = {
+	[0] = {			/* system timer access */
+	       .start = ST_BASE,
+	       .end = ST_BASE + SZ_4K - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+	{
+	 .start = IRQ_TIMER3,
+	 .end = IRQ_TIMER3,
+	 .flags = IORESOURCE_IRQ,
+	 }
+
+};
+
+static u64 systemtimer_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+static struct platform_device bcm2708_systemtimer_device = {
+	.name = "bcm2708_systemtimer",
+	.id = -1,		/* only one VideoCore I/O area */
+	.resource = bcm2708_systemtimer_resources,
+	.num_resources = ARRAY_SIZE(bcm2708_systemtimer_resources),
+	.dev = {
+		.dma_mask = &systemtimer_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
+		},
+};
+#endif
+
+#ifdef CONFIG_MMC_BCM2835	/* Arasan emmc SD (new) */
+static struct resource bcm2835_emmc_resources[] = {
+	[0] = {
+	       .start = EMMC_BASE,
+	       .end = EMMC_BASE + SZ_256 - 1,	/* we only need this area */
+	       /* the memory map actually makes SZ_4K available  */
+	       .flags = IORESOURCE_MEM,
+	       },
+	[1] = {
+	       .start = IRQ_ARASANSDIO,
+	       .end = IRQ_ARASANSDIO,
+	       .flags = IORESOURCE_IRQ,
+	       },
+};
+
+static u64 bcm2835_emmc_dmamask = 0xffffffffUL;
+
+struct platform_device bcm2835_emmc_device = {
+	.name = "mmc-bcm2835",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2835_emmc_resources),
+	.resource = bcm2835_emmc_resources,
+	.dev = {
+		.dma_mask = &bcm2835_emmc_dmamask,
+		.coherent_dma_mask = 0xffffffffUL},
+};
+#endif /* CONFIG_MMC_BCM2835 */
+
+static struct resource bcm2708_powerman_resources[] = {
+	[0] = {
+	       .start = PM_BASE,
+	       .end = PM_BASE + SZ_256 - 1,
+	       .flags = IORESOURCE_MEM,
+	       },
+};
+
+static u64 powerman_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+
+struct platform_device bcm2708_powerman_device = {
+	.name = "bcm2708_powerman",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2708_powerman_resources),
+	.resource = bcm2708_powerman_resources,
+	.dev = {
+		.dma_mask = &powerman_dmamask,
+		.coherent_dma_mask = 0xffffffffUL},
+};
+
+
+static struct platform_device bcm2708_alsa_devices[] = {
+	[0] = {
+	       .name = "bcm2835_AUD0",
+	       .id = 0,		/* first audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[1] = {
+	       .name = "bcm2835_AUD1",
+	       .id = 1,		/* second audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[2] = {
+	       .name = "bcm2835_AUD2",
+	       .id = 2,		/* third audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[3] = {
+	       .name = "bcm2835_AUD3",
+	       .id = 3,		/* forth audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[4] = {
+	       .name = "bcm2835_AUD4",
+	       .id = 4,		/* fifth audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[5] = {
+	       .name = "bcm2835_AUD5",
+	       .id = 5,		/* sixth audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[6] = {
+	       .name = "bcm2835_AUD6",
+	       .id = 6,		/* seventh audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+	[7] = {
+	       .name = "bcm2835_AUD7",
+	       .id = 7,		/* eighth audio device */
+	       .resource = 0,
+	       .num_resources = 0,
+	       },
+};
+
+static struct resource bcm2708_spi_resources[] = {
+	{
+		.start = SPI0_BASE,
+		.end = SPI0_BASE + SZ_256 - 1,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.start = IRQ_SPI,
+		.end = IRQ_SPI,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+
+static u64 bcm2708_spi_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
+static struct platform_device bcm2708_spi_device = {
+	.name = "bcm2708_spi",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2708_spi_resources),
+	.resource = bcm2708_spi_resources,
+	.dev = {
+		.dma_mask = &bcm2708_spi_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON)},
+};
+
+#ifdef CONFIG_BCM2708_SPIDEV
+static struct spi_board_info bcm2708_spi_devices[] = {
+#ifdef CONFIG_SPI_SPIDEV
+	{
+		.modalias = "spidev",
+		.max_speed_hz = 500000,
+		.bus_num = 0,
+		.chip_select = 0,
+		.mode = SPI_MODE_0,
+	}, {
+		.modalias = "spidev",
+		.max_speed_hz = 500000,
+		.bus_num = 0,
+		.chip_select = 1,
+		.mode = SPI_MODE_0,
+	}
+#endif
+};
+#endif
+
+static struct resource bcm2708_bsc0_resources[] = {
+	{
+		.start = BSC0_BASE,
+		.end = BSC0_BASE + SZ_256 - 1,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.start = INTERRUPT_I2C,
+		.end = INTERRUPT_I2C,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device bcm2708_bsc0_device = {
+	.name = "bcm2708_i2c",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2708_bsc0_resources),
+	.resource = bcm2708_bsc0_resources,
+};
+
+
+static struct resource bcm2708_bsc1_resources[] = {
+	{
+		.start = BSC1_BASE,
+		.end = BSC1_BASE + SZ_256 - 1,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.start = INTERRUPT_I2C,
+		.end = INTERRUPT_I2C,
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device bcm2708_bsc1_device = {
+	.name = "bcm2708_i2c",
+	.id = 1,
+	.num_resources = ARRAY_SIZE(bcm2708_bsc1_resources),
+	.resource = bcm2708_bsc1_resources,
+};
+
+static struct platform_device bcm2835_hwmon_device = {
+	.name = "bcm2835_hwmon",
+};
+
+static struct platform_device bcm2835_thermal_device = {
+	.name = "bcm2835_thermal",
+};
+
+#if defined(CONFIG_SND_BCM2708_SOC_I2S) || defined(CONFIG_SND_BCM2708_SOC_I2S_MODULE)
+static struct resource bcm2708_i2s_resources[] = {
+	{
+		.start = I2S_BASE,
+		.end = I2S_BASE + 0x20,
+		.flags = IORESOURCE_MEM,
+	},
+        {
+		.start = PCM_CLOCK_BASE,
+		.end = PCM_CLOCK_BASE + 0x02,
+		.flags = IORESOURCE_MEM,
+	}
+};
+
+static struct platform_device bcm2708_i2s_device = {
+	.name = "bcm2708-i2s",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(bcm2708_i2s_resources),
+	.resource = bcm2708_i2s_resources,
+};
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC_MODULE)
+static struct platform_device snd_hifiberry_dac_device = {
+        .name = "snd-hifiberry-dac",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct platform_device snd_pcm5102a_codec_device = {
+        .name = "pcm5102a-codec",
+        .id = -1,
+        .num_resources = 0,
+};
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE)
+static struct platform_device snd_rpi_hifiberry_dacplus_device = {
+        .name = "snd-rpi-hifiberry-dacplus",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct i2c_board_info __initdata snd_pcm512x_hbdacplus_i2c_devices[] = {
+        {
+                I2C_BOARD_INFO("pcm5122", 0x4d)
+        },
+};
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE)
+static struct platform_device snd_hifiberry_digi_device = {
+        .name = "snd-hifiberry-digi",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct i2c_board_info __initdata snd_wm8804_i2c_devices[] = {
+        {
+                I2C_BOARD_INFO("wm8804", 0x3b)
+        },
+};
+
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP_MODULE)
+static struct platform_device snd_hifiberry_amp_device = {
+        .name = "snd-hifiberry-amp",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct i2c_board_info __initdata snd_tas5713_i2c_devices[] = {
+        {
+                I2C_BOARD_INFO("tas5713", 0x1b)
+        },
+};
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE)
+static struct platform_device snd_rpi_dac_device = {
+        .name = "snd-rpi-dac",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct platform_device snd_pcm1794a_codec_device = {
+        .name = "pcm1794a-codec",
+        .id = -1,
+        .num_resources = 0,
+};
+#endif
+
+
+#if defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) || defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC_MODULE)
+static struct platform_device snd_rpi_iqaudio_dac_device = {
+        .name = "snd-rpi-iqaudio-dac",
+        .id = 0,
+        .num_resources = 0,
+};
+
+// Use the actual device name rather than generic driver name
+static struct i2c_board_info __initdata snd_pcm512x_i2c_devices[] = {
+	{
+		I2C_BOARD_INFO("pcm5122", 0x4c)
+	},
+};
+#endif
+
+int __init bcm_register_device(struct platform_device *pdev)
+{
+	int ret;
+
+	ret = platform_device_register(pdev);
+	if (ret)
+		pr_debug("Unable to register platform device '%s': %d\n",
+			 pdev->name, ret);
+
+	return ret;
+}
+
+/*
+ * Use these macros for platform and i2c devices that are present in the
+ * Device Tree. This way the devices are only added on non-DT systems.
+ */
+#define bcm_register_device_dt(pdev) \
+    if (!use_dt) bcm_register_device(pdev)
+
+#define i2c_register_board_info_dt(busnum, info, n) \
+    if (!use_dt) i2c_register_board_info(busnum, info, n)
+
+int calc_rsts(int partition)
+{
+	return PM_PASSWORD |
+		((partition & (1 << 0))  << 0) |
+		((partition & (1 << 1))  << 1) |
+		((partition & (1 << 2))  << 2) |
+		((partition & (1 << 3))  << 3) |
+		((partition & (1 << 4))  << 4) |
+		((partition & (1 << 5))  << 5);
+}
+
+static void bcm2709_restart(enum reboot_mode mode, const char *cmd)
+{
+	extern char bcm2708_reboot_mode;
+	uint32_t pm_rstc, pm_wdog;
+	uint32_t timeout = 10;
+	uint32_t pm_rsts = 0;
+
+	if(bcm2708_reboot_mode == 'q')
+	{
+		// NOOBS < 1.3 booting with reboot=q
+		pm_rsts = readl(__io_address(PM_RSTS));
+		pm_rsts = PM_PASSWORD | pm_rsts | PM_RSTS_HADWRQ_SET;
+	}
+	else if(bcm2708_reboot_mode == 'p')
+	{
+		// NOOBS < 1.3 halting
+		pm_rsts = readl(__io_address(PM_RSTS));
+		pm_rsts = PM_PASSWORD | pm_rsts | PM_RSTS_HADWRH_SET;
+	}
+	else
+	{
+		pm_rsts = calc_rsts(reboot_part);
+	}
+
+	writel(pm_rsts, __io_address(PM_RSTS));
+
+	/* Setup watchdog for reset */
+	pm_rstc = readl(__io_address(PM_RSTC));
+
+	pm_wdog = PM_PASSWORD | (timeout & PM_WDOG_TIME_SET); // watchdog timer = timer clock / 16; need password (31:16) + value (11:0)
+	pm_rstc = PM_PASSWORD | (pm_rstc & PM_RSTC_WRCFG_CLR) | PM_RSTC_WRCFG_FULL_RESET;
+
+	writel(pm_wdog, __io_address(PM_WDOG));
+	writel(pm_rstc, __io_address(PM_RSTC));
+}
+
+/* We can't really power off, but if we do the normal reset scheme, and indicate to bootcode.bin not to reboot, then most of the chip will be powered off */
+static void bcm2709_power_off(void)
+{
+	extern char bcm2708_reboot_mode;
+	if(bcm2708_reboot_mode == 'q')
+	{
+		// NOOBS < v1.3
+		bcm2709_restart('p', "");
+	}
+	else
+	{
+		/* partition 63 is special code for HALT the bootloader knows not to boot*/
+		reboot_part = 63;
+		/* continue with normal reset mechanism */
+		bcm2709_restart(0, "");
+	}
+}
+
+#ifdef CONFIG_OF
+static void __init bcm2709_dt_init(void)
+{
+	int ret;
+
+	ret = of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+	if (ret) {
+		pr_err("of_platform_populate failed: %d\n", ret);
+		use_dt = 0;
+	}
+}
+#else
+static void __init bcm2709_dt_init(void) { }
+#endif /* CONFIG_OF */
+
+void __init bcm2709_init(void)
+{
+	int i;
+
+#if defined(CONFIG_BCM_VC_CMA)
+	vc_cma_early_init();
+#endif
+	printk("bcm2709.uart_clock = %d\n", uart_clock);
+	pm_power_off = bcm2709_power_off;
+
+	bcm2709_init_clocks();
+	if (use_dt)
+	    bcm2709_dt_init();
+
+	bcm_register_device(&bcm2708_dmaman_device);
+	bcm_register_device(&bcm2708_vcio_device);
+#ifdef CONFIG_BCM2708_GPIO
+	bcm_register_device_dt(&bcm2708_gpio_device);
+#endif
+
+#if defined(CONFIG_PPS_CLIENT_GPIO) || defined(CONFIG_PPS_CLIENT_GPIO_MODULE)
+	if (!use_dt && (pps_gpio_pin >= 0)) {
+		pr_info("bcm2709: GPIO %d setup as pps-gpio device\n", pps_gpio_pin);
+		pps_gpio_info.gpio_pin = pps_gpio_pin;
+		pps_gpio_device.id = pps_gpio_pin;
+		bcm_register_device(&pps_gpio_device);
+	}
+#endif
+
+#if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
+	w1_gpio_pdata.pin = w1_gpio_pin;
+	w1_gpio_pdata.ext_pullup_enable_pin = w1_gpio_pullup;
+	bcm_register_device_dt(&w1_device);
+#endif
+#ifdef SYSTEM_TIMER
+	bcm_register_device(&bcm2708_systemtimer_device);
+#endif
+	bcm_register_device(&bcm2708_fb_device);
+	bcm_register_device(&bcm2708_usb_device);
+	bcm_register_device(&bcm2708_uart1_device);
+	bcm_register_device(&bcm2708_powerman_device);
+
+#ifdef CONFIG_MMC_BCM2835
+	bcm_register_device(&bcm2835_emmc_device);
+#endif
+	bcm2709_init_led();
+	for (i = 0; i < ARRAY_SIZE(bcm2708_alsa_devices); i++)
+		bcm_register_device(&bcm2708_alsa_devices[i]);
+
+	bcm_register_device(&bcm2835_hwmon_device);
+	bcm_register_device(&bcm2835_thermal_device);
+
+	bcm_register_device_dt(&bcm2708_spi_device);
+
+	if (vc_i2c_override) {
+		bcm_register_device_dt(&bcm2708_bsc0_device);
+		bcm_register_device_dt(&bcm2708_bsc1_device);
+	} else if ((boardrev & 0xffffff) == 0x2 || (boardrev & 0xffffff) == 0x3) {
+		bcm_register_device_dt(&bcm2708_bsc0_device);
+	} else {
+		bcm_register_device_dt(&bcm2708_bsc1_device);
+	}
+
+#if defined(CONFIG_SND_BCM2708_SOC_I2S) || defined(CONFIG_SND_BCM2708_SOC_I2S_MODULE)
+	bcm_register_device_dt(&bcm2708_i2s_device);
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC_MODULE)
+        bcm_register_device_dt(&snd_hifiberry_dac_device);
+        bcm_register_device_dt(&snd_pcm5102a_codec_device);
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE)
+        bcm_register_device_dt(&snd_rpi_hifiberry_dacplus_device);
+        i2c_register_board_info_dt(1, snd_pcm512x_hbdacplus_i2c_devices, ARRAY_SIZE(snd_pcm512x_hbdacplus_i2c_devices));
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE)
+        bcm_register_device_dt(&snd_hifiberry_digi_device);
+        i2c_register_board_info_dt(1, snd_wm8804_i2c_devices, ARRAY_SIZE(snd_wm8804_i2c_devices));
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP_MODULE)
+        bcm_register_device_dt(&snd_hifiberry_amp_device);
+        i2c_register_board_info_dt(1, snd_tas5713_i2c_devices, ARRAY_SIZE(snd_tas5713_i2c_devices));
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE)
+        bcm_register_device_dt(&snd_rpi_dac_device);
+        bcm_register_device_dt(&snd_pcm1794a_codec_device);
+#endif
+
+#if defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) || defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC_MODULE)
+        bcm_register_device_dt(&snd_rpi_iqaudio_dac_device);
+        i2c_register_board_info_dt(1, snd_pcm512x_i2c_devices, ARRAY_SIZE(snd_pcm512x_i2c_devices));
+#endif
+
+
+	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
+		struct amba_device *d = amba_devs[i];
+		amba_device_register(d, &iomem_resource);
+	}
+	system_rev = boardrev;
+	system_serial_low = serial;
+
+#ifdef CONFIG_BCM2708_SPIDEV
+	if (!use_dt)
+	    spi_register_board_info(bcm2708_spi_devices,
+				    ARRAY_SIZE(bcm2708_spi_devices));
+#endif
+}
+
+#ifdef SYSTEM_TIMER
+static void timer_set_mode(enum clock_event_mode mode,
+			   struct clock_event_device *clk)
+{
+	switch (mode) {
+	case CLOCK_EVT_MODE_ONESHOT: /* Leave the timer disabled, .set_next_event will enable it */
+	case CLOCK_EVT_MODE_SHUTDOWN:
+		break;
+	case CLOCK_EVT_MODE_PERIODIC:
+
+	case CLOCK_EVT_MODE_UNUSED:
+	case CLOCK_EVT_MODE_RESUME:
+
+	default:
+		printk(KERN_ERR "timer_set_mode: unhandled mode:%d\n",
+		       (int)mode);
+		break;
+	}
+
+}
+
+static int timer_set_next_event(unsigned long cycles,
+				struct clock_event_device *unused)
+{
+	unsigned long stc;
+	do {
+		stc = readl(__io_address(ST_BASE + 0x04));
+		/* We could take a FIQ here, which may push ST above STC3 */
+		writel(stc + cycles, __io_address(ST_BASE + 0x18));
+	} while ((signed long) cycles >= 0 &&
+				(signed long) (readl(__io_address(ST_BASE + 0x04)) - stc)
+				>= (signed long) cycles);
+	return 0;
+}
+
+static struct clock_event_device timer0_clockevent = {
+	.name = "timer0",
+	.shift = 32,
+	.features = CLOCK_EVT_FEAT_ONESHOT,
+	.set_mode = timer_set_mode,
+	.set_next_event = timer_set_next_event,
+};
+
+/*
+ * IRQ handler for the timer
+ */
+static irqreturn_t bcm2709_timer_interrupt(int irq, void *dev_id)
+{
+	struct clock_event_device *evt = &timer0_clockevent;
+
+	writel(1 << 3, __io_address(ST_BASE + 0x00));	/* stcs clear timer int */
+
+	evt->event_handler(evt);
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction bcm2709_timer_irq = {
+	.name = "BCM2709 Timer Tick",
+	.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+	.handler = bcm2709_timer_interrupt,
+};
+
+/*
+ * Set up timer interrupt, and return the current time in seconds.
+ */
+
+static struct delay_timer bcm2709_delay_timer = {
+	.read_current_timer = bcm2709_read_current_timer,
+	.freq = STC_FREQ_HZ,
+};
+
+static void __init bcm2709_timer_init(void)
+{
+	/* init high res timer */
+	bcm2709_clocksource_init();
+
+	/*
+	 * Make irqs happen for the system timer
+	 */
+	setup_irq(IRQ_TIMER3, &bcm2708_timer_irq);
+
+	sched_clock_register(bcm2709_read_sched_clock, 32, STC_FREQ_HZ);
+
+	timer0_clockevent.mult =
+	    div_sc(STC_FREQ_HZ, NSEC_PER_SEC, timer0_clockevent.shift);
+	timer0_clockevent.max_delta_ns =
+	    clockevent_delta2ns(0xffffffff, &timer0_clockevent);
+	timer0_clockevent.min_delta_ns =
+	    clockevent_delta2ns(0xf, &timer0_clockevent);
+
+	timer0_clockevent.cpumask = cpumask_of(0);
+	clockevents_register_device(&timer0_clockevent);
+
+	register_current_timer_delay(&bcm2708_delay_timer);
+}
+
+#else
+
+static void __init bcm2709_timer_init(void)
+{
+	extern void dc4_arch_timer_init(void);
+	// timer control
+	writel(0, __io_address(ARM_LOCAL_CONTROL));
+	// timer pre_scaler
+	writel(0x80000000, __io_address(ARM_LOCAL_PRESCALER)); // 19.2MHz
+	//writel(0x06AAAAAB, __io_address(ARM_LOCAL_PRESCALER)); // 1MHz
+
+	if (use_dt)
+	{
+		of_clk_init(NULL);
+		clocksource_of_init();
+	}
+	else
+		dc4_arch_timer_init();
+}
+
+#endif
+
+#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
+#include <linux/leds.h>
+
+static struct gpio_led bcm2709_leds[] = {
+	[0] = {
+	       .gpio = 16,
+	       .name = "led0",
+	       .default_trigger = "mmc0",
+	       .active_low = 1,
+	       },
+};
+
+static struct gpio_led_platform_data bcm2709_led_pdata = {
+	.num_leds = ARRAY_SIZE(bcm2709_leds),
+	.leds = bcm2709_leds,
+};
+
+static struct platform_device bcm2709_led_device = {
+	.name = "leds-gpio",
+	.id = -1,
+	.dev = {
+		.platform_data = &bcm2709_led_pdata,
+		},
+};
+
+static void __init bcm2709_init_led(void)
+{
+	bcm2709_leds[0].gpio = disk_led_gpio;
+	bcm2709_leds[0].active_low = disk_led_active_low;
+	bcm_register_device_dt(&bcm2709_led_device);
+}
+#else
+static inline void bcm2709_init_led(void)
+{
+}
+#endif
+
+void __init bcm2709_init_early(void)
+{
+	/*
+	 * Some devices allocate their coherent buffers from atomic
+	 * context. Increase size of atomic coherent pool to make sure such
+	 * the allocations won't fail.
+	 */
+	init_dma_coherent_pool_size(SZ_4M);
+
+#ifdef CONFIG_OF
+	if (of_allnodes)
+	    use_dt = 1;
+#endif
+}
+
+static void __init board_reserve(void)
+{
+#if defined(CONFIG_BCM_VC_CMA)
+	vc_cma_reserve();
+#endif
+}
+
+
+#include <linux/smp.h>
+
+#include <mach/hardware.h>
+#include <asm/cacheflush.h>
+#include <asm/smp_plat.h>
+int dc4=0;
+//void dc4_log(unsigned x) { if (dc4) writel((x), __io_address(ST_BASE+10 + raw_smp_processor_id()*4)); }
+void dc4_log_dead(unsigned x) { if (dc4) writel((readl(__io_address(ST_BASE+0x10 + raw_smp_processor_id()*4)) & 0xffff) | ((x)<<16), __io_address(ST_BASE+0x10 + raw_smp_processor_id()*4)); }
+
+static void bcm2835_send_doorbell(const struct cpumask *mask, unsigned int irq)
+{
+        int cpu;
+        /*
+         * Ensure that stores to Normal memory are visible to the
+         * other CPUs before issuing the IPI.
+         */
+        dsb();
+
+        /* Convert our logical CPU mask into a physical one. */
+        for_each_cpu(cpu, mask)
+	{
+		/* submit softirq */
+		writel(1<<irq, __io_address(ARM_LOCAL_MAILBOX0_SET0 + 0x10 * MPIDR_AFFINITY_LEVEL(cpu_logical_map(cpu), 0)));
+	}
+}
+
+void __init bcm2709_smp_init_cpus(void)
+{
+	void secondary_startup(void);
+	unsigned int i, ncores;
+
+	ncores = 4; // xxx scu_get_core_count(NULL);
+	printk("[%s] enter (%x->%x)\n", __FUNCTION__, (unsigned)virt_to_phys((void *)secondary_startup), (unsigned)__io_address(ST_BASE + 0x10));
+	printk("[%s] ncores=%d\n", __FUNCTION__, ncores);
+
+	for (i = 0; i < ncores; i++) {
+		set_cpu_possible(i, true);
+		/* enable IRQ (not FIQ) */
+		writel(0x1, __io_address(ARM_LOCAL_MAILBOX_INT_CONTROL0 + 0x4 * i));
+		//writel(0xf, __io_address(ARM_LOCAL_TIMER_INT_CONTROL0   + 0x4 * i));
+	}
+	set_smp_cross_call(bcm2835_send_doorbell);
+}
+
+/*
+ * for arch/arm/kernel/smp.c:smp_prepare_cpus(unsigned int max_cpus)
+ */
+void __init bcm2709_smp_prepare_cpus(unsigned int max_cpus)
+{
+    //void __iomem *scu_base;
+
+    printk("[%s] enter\n", __FUNCTION__);
+    //scu_base = scu_base_addr();
+    //scu_enable(scu_base);
+}
+
+/*
+ * for linux/arch/arm/kernel/smp.c:secondary_start_kernel(void)
+ */
+void __cpuinit bcm2709_secondary_init(unsigned int cpu)
+{
+    printk("[%s] enter cpu:%d\n", __FUNCTION__, cpu);
+    //gic_secondary_init(0);
+}
+
+/*
+ * for linux/arch/arm/kernel/smp.c:__cpu_up(..)
+ */
+int __cpuinit bcm2709_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+    void secondary_startup(void);
+    void *mbox_set = __io_address(ARM_LOCAL_MAILBOX3_SET0 + 0x10 * MPIDR_AFFINITY_LEVEL(cpu_logical_map(cpu), 0));
+    void *mbox_clr = __io_address(ARM_LOCAL_MAILBOX3_CLR0 + 0x10 * MPIDR_AFFINITY_LEVEL(cpu_logical_map(cpu), 0));
+    unsigned secondary_boot = (unsigned)virt_to_phys((void *)secondary_startup);
+    int timeout=20;
+    unsigned t = -1;
+    //printk("[%s] enter cpu:%d (%x->%p) %x\n", __FUNCTION__, cpu, secondary_boot, wake, readl(wake));
+
+    dsb();
+    BUG_ON(readl(mbox_clr) != 0);
+    writel(secondary_boot, mbox_set);
+
+    while (--timeout > 0) {
+	t = readl(mbox_clr);
+	if (t == 0) break;
+	cpu_relax();
+    }
+    if (timeout==0)
+        printk("[%s] cpu:%d failed to start (%x)\n", __FUNCTION__, cpu, t);
+    else
+        printk("[%s] cpu:%d started (%x) %d\n", __FUNCTION__, cpu, t, timeout);
+
+    return 0;
+}
+
+
+struct smp_operations  bcm2709_smp_ops __initdata = {
+	.smp_init_cpus		= bcm2709_smp_init_cpus,
+	.smp_prepare_cpus	= bcm2709_smp_prepare_cpus,
+	.smp_secondary_init	= bcm2709_secondary_init,
+	.smp_boot_secondary	= bcm2709_boot_secondary,
+};
+
+static const char * const bcm2709_compat[] = {
+	"brcm,bcm2709",
+	"brcm,bcm2708", /* Could use bcm2708 in a pinch */
+	NULL
+};
+
+MACHINE_START(BCM2709, "BCM2709")
+    /* Maintainer: Broadcom Europe Ltd. */
+	.smp		= smp_ops(bcm2709_smp_ops),
+	.map_io = bcm2709_map_io,
+	.init_irq = bcm2709_init_irq,
+	.init_time = bcm2709_timer_init,
+	.init_machine = bcm2709_init,
+	.init_early = bcm2709_init_early,
+	.reserve = board_reserve,
+	.restart	= bcm2709_restart,
+	.dt_compat = bcm2709_compat,
+MACHINE_END
+
+MACHINE_START(BCM2708, "BCM2709")
+    /* Maintainer: Broadcom Europe Ltd. */
+	.smp		= smp_ops(bcm2709_smp_ops),
+	.map_io = bcm2709_map_io,
+	.init_irq = bcm2709_init_irq,
+	.init_time = bcm2709_timer_init,
+	.init_machine = bcm2709_init,
+	.init_early = bcm2709_init_early,
+	.reserve = board_reserve,
+	.restart	= bcm2709_restart,
+	.dt_compat = bcm2709_compat,
+MACHINE_END
+
+module_param(boardrev, uint, 0644);
+module_param(serial, uint, 0644);
+module_param(uart_clock, uint, 0644);
+module_param(disk_led_gpio, uint, 0644);
+module_param(disk_led_active_low, uint, 0644);
+module_param(reboot_part, uint, 0644);
+module_param(w1_gpio_pin, uint, 0644);
+module_param(w1_gpio_pullup, uint, 0644);
+module_param(pps_gpio_pin, int, 0644);
+MODULE_PARM_DESC(pps_gpio_pin, "Set GPIO pin to reserve for PPS");
+module_param(vc_i2c_override, bool, 0644);
+MODULE_PARM_DESC(vc_i2c_override, "Allow the use of VC's I2C peripheral.");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/bcm2709.h linux-rpi/arch/arm/mach-bcm2709/bcm2709.h
--- linux-3.18.10/arch/arm/mach-bcm2709/bcm2709.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/bcm2709.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,49 @@
+/*
+ * linux/arch/arm/mach-bcm2708/bcm2708.h
+ *
+ * BCM2708 machine support header
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __BCM2708_BCM2708_H
+#define __BCM2708_BCM2708_H
+
+#include <linux/amba/bus.h>
+
+extern void __init bcm2708_init(void);
+extern void __init bcm2708_init_irq(void);
+extern void __init bcm2708_map_io(void);
+extern struct sys_timer bcm2708_timer;
+extern unsigned int mmc_status(struct device *dev);
+
+#define AMBA_DEVICE(name, busid, base, plat)			\
+static struct amba_device name##_device = {			\
+	.dev		= {					\
+		.coherent_dma_mask = ~0,			\
+		.init_name = busid,				\
+		.platform_data = plat,				\
+	},							\
+	.res		= {					\
+		.start	= base##_BASE,		\
+		.end	= (base##_BASE) + SZ_4K - 1,\
+		.flags	= IORESOURCE_MEM,			\
+	},							\
+	.irq		= base##_IRQ,				\
+}
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/clock.c linux-rpi/arch/arm/mach-bcm2709/clock.c
--- linux-3.18.10/arch/arm/mach-bcm2709/clock.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/clock.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,61 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/clock.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include <linux/clk.h>
+#include <linux/mutex.h>
+
+#include <asm/clkdev.h>
+
+#include "clock.h"
+
+int clk_enable(struct clk *clk)
+{
+	return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+	return clk->rate;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+	return clk->rate;
+}
+EXPORT_SYMBOL(clk_round_rate);
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	return -EIO;
+}
+EXPORT_SYMBOL(clk_set_rate);
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/clock.h linux-rpi/arch/arm/mach-bcm2709/clock.h
--- linux-3.18.10/arch/arm/mach-bcm2709/clock.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/clock.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,24 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/clock.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+struct module;
+
+struct clk {
+	unsigned long		rate;
+};
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/delay.S linux-rpi/arch/arm/mach-bcm2709/delay.S
--- linux-3.18.10/arch/arm/mach-bcm2709/delay.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/delay.S	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,21 @@
+/*
+ *  linux/arch/arm/lib/delay.S
+ *
+ *  Copyright (C) 1995, 1996 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include <asm/param.h>
+
+		.text
+.align 3	@ 8 byte alignment seems to be needed to avoid fetching stalls
+@ Delay routine
+ENTRY(bcm2708_delay)
+		subs	r0, r0, #1
+		bhi	bcm2708_delay
+		mov	pc, lr
+ENDPROC(bcm2708_delay)
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/dma.c linux-rpi/arch/arm/mach-bcm2709/dma.c
--- linux-3.18.10/arch/arm/mach-bcm2709/dma.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/dma.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,409 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/dma.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/scatterlist.h>
+
+#include <mach/dma.h>
+#include <mach/irqs.h>
+
+/*****************************************************************************\
+ *									     *
+ * Configuration							     *
+ *									     *
+\*****************************************************************************/
+
+#define CACHE_LINE_MASK 31
+#define DRIVER_NAME BCM_DMAMAN_DRIVER_NAME
+#define DEFAULT_DMACHAN_BITMAP 0x10  /* channel 4 only */
+
+/* valid only for channels 0 - 14, 15 has its own base address */
+#define BCM2708_DMA_CHAN(n)	((n)<<8) /* base address */
+#define BCM2708_DMA_CHANIO(dma_base, n) \
+   ((void __iomem *)((char *)(dma_base)+BCM2708_DMA_CHAN(n)))
+
+
+/*****************************************************************************\
+ *									     *
+ * DMA Auxilliary Functions						     *
+ *									     *
+\*****************************************************************************/
+
+/* A DMA buffer on an arbitrary boundary may separate a cache line into a
+   section inside the DMA buffer and another section outside it.
+   Even if we flush DMA buffers from the cache there is always the chance that
+   during a DMA someone will access the part of a cache line that is outside
+   the DMA buffer - which will then bring in unwelcome data.
+   Without being able to dictate our own buffer pools we must insist that
+   DMA buffers consist of a whole number of cache lines.
+*/
+
+extern int
+bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len)
+{
+	int i;
+
+	for (i = 0; i < sg_len; i++) {
+		if (sg_ptr[i].offset & CACHE_LINE_MASK ||
+		    sg_ptr[i].length & CACHE_LINE_MASK)
+			return 0;
+	}
+
+	return 1;
+}
+EXPORT_SYMBOL_GPL(bcm_sg_suitable_for_dma);
+
+extern void
+bcm_dma_start(void __iomem *dma_chan_base, dma_addr_t control_block)
+{
+	dsb();	/* ARM data synchronization (push) operation */
+
+	writel(control_block,	     dma_chan_base + BCM2708_DMA_ADDR);
+	writel(BCM2708_DMA_ACTIVE,   dma_chan_base + BCM2708_DMA_CS);
+}
+
+extern void bcm_dma_wait_idle(void __iomem *dma_chan_base)
+{
+  dsb();
+
+  /* ugly busy wait only option for now */
+  while (readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE)
+    cpu_relax();
+}
+
+EXPORT_SYMBOL_GPL(bcm_dma_start);
+
+extern bool bcm_dma_is_busy(void __iomem *dma_chan_base)
+{
+	dsb();
+
+	return readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_is_busy);
+
+/* Complete an ongoing DMA (assuming its results are to be ignored)
+   Does nothing if there is no DMA in progress.
+   This routine waits for the current AXI transfer to complete before
+   terminating the current DMA.	 If the current transfer is hung on a DREQ used
+   by an uncooperative peripheral the AXI transfer may never complete.	In this
+   case the routine times out and return a non-zero error code.
+   Use of this routine doesn't guarantee that the ongoing or aborted DMA
+   does not produce an interrupt.
+*/
+extern int
+bcm_dma_abort(void __iomem *dma_chan_base)
+{
+	unsigned long int cs;
+	int rc = 0;
+
+	cs = readl(dma_chan_base + BCM2708_DMA_CS);
+
+	if (BCM2708_DMA_ACTIVE & cs) {
+		long int timeout = 10000;
+
+		/* write 0 to the active bit - pause the DMA */
+		writel(0, dma_chan_base + BCM2708_DMA_CS);
+
+		/* wait for any current AXI transfer to complete */
+		while (0 != (cs & BCM2708_DMA_ISPAUSED) && --timeout >= 0)
+			cs = readl(dma_chan_base + BCM2708_DMA_CS);
+
+		if (0 != (cs & BCM2708_DMA_ISPAUSED)) {
+			/* we'll un-pause when we set of our next DMA */
+			rc = -ETIMEDOUT;
+
+		} else if (BCM2708_DMA_ACTIVE & cs) {
+			/* terminate the control block chain */
+			writel(0, dma_chan_base + BCM2708_DMA_NEXTCB);
+
+			/* abort the whole DMA */
+			writel(BCM2708_DMA_ABORT | BCM2708_DMA_ACTIVE,
+			       dma_chan_base + BCM2708_DMA_CS);
+		}
+	}
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_abort);
+
+
+/***************************************************************************** \
+ *									     *
+ * DMA Manager Device Methods						     *
+ *									     *
+\*****************************************************************************/
+
+struct vc_dmaman {
+	void __iomem *dma_base;
+	u32 chan_available; /* bitmap of available channels */
+	u32 has_feature[BCM_DMA_FEATURE_COUNT]; /* bitmap of feature presence */
+};
+
+static void vc_dmaman_init(struct vc_dmaman *dmaman, void __iomem *dma_base,
+			   u32 chans_available)
+{
+	dmaman->dma_base = dma_base;
+	dmaman->chan_available = chans_available;
+	dmaman->has_feature[BCM_DMA_FEATURE_FAST_ORD] = 0x0c;  /* chans 2 & 3 */
+	dmaman->has_feature[BCM_DMA_FEATURE_BULK_ORD] = 0x01;  /* chan 0 */
+	dmaman->has_feature[BCM_DMA_FEATURE_NORMAL_ORD] = 0xfe;  /* chans 1 to 7 */
+	dmaman->has_feature[BCM_DMA_FEATURE_LITE_ORD] = 0x7f00;  /* chans 8 to 14 */
+}
+
+static int vc_dmaman_chan_alloc(struct vc_dmaman *dmaman,
+				unsigned preferred_feature_set)
+{
+	u32 chans;
+	int feature;
+
+	chans = dmaman->chan_available;
+	for (feature = 0; feature < BCM_DMA_FEATURE_COUNT; feature++)
+		/* select the subset of available channels with the desired
+		   feature so long as some of the candidate channels have that
+		   feature */
+		if ((preferred_feature_set & (1 << feature)) &&
+		    (chans & dmaman->has_feature[feature]))
+			chans &= dmaman->has_feature[feature];
+
+	if (chans) {
+		int chan = 0;
+		/* return the ordinal of the first channel in the bitmap */
+		while (chans != 0 && (chans & 1) == 0) {
+			chans >>= 1;
+			chan++;
+		}
+		/* claim the channel */
+		dmaman->chan_available &= ~(1 << chan);
+		return chan;
+	} else
+		return -ENOMEM;
+}
+
+static int vc_dmaman_chan_free(struct vc_dmaman *dmaman, int chan)
+{
+	if (chan < 0)
+		return -EINVAL;
+	else if ((1 << chan) & dmaman->chan_available)
+		return -EIDRM;
+	else {
+		dmaman->chan_available |= (1 << chan);
+		return 0;
+	}
+}
+
+/*****************************************************************************\
+ *									     *
+ * DMA IRQs								     *
+ *									     *
+\*****************************************************************************/
+
+static unsigned char bcm_dma_irqs[] = {
+	IRQ_DMA0,
+	IRQ_DMA1,
+	IRQ_DMA2,
+	IRQ_DMA3,
+	IRQ_DMA4,
+	IRQ_DMA5,
+	IRQ_DMA6,
+	IRQ_DMA7,
+	IRQ_DMA8,
+	IRQ_DMA9,
+	IRQ_DMA10,
+	IRQ_DMA11,
+	IRQ_DMA12
+};
+
+
+/***************************************************************************** \
+ *									     *
+ * DMA Manager Monitor							     *
+ *									     *
+\*****************************************************************************/
+
+static struct device *dmaman_dev;	/* we assume there's only one! */
+
+extern int bcm_dma_chan_alloc(unsigned preferred_feature_set,
+			      void __iomem **out_dma_base, int *out_dma_irq)
+{
+	if (!dmaman_dev)
+		return -ENODEV;
+	else {
+		struct vc_dmaman *dmaman  = dev_get_drvdata(dmaman_dev);
+		int rc;
+
+		device_lock(dmaman_dev);
+		rc = vc_dmaman_chan_alloc(dmaman, preferred_feature_set);
+		if (rc >= 0) {
+			*out_dma_base = BCM2708_DMA_CHANIO(dmaman->dma_base,
+							   rc);
+			*out_dma_irq = bcm_dma_irqs[rc];
+		}
+		device_unlock(dmaman_dev);
+
+		return rc;
+	}
+}
+EXPORT_SYMBOL_GPL(bcm_dma_chan_alloc);
+
+extern int bcm_dma_chan_free(int channel)
+{
+	if (dmaman_dev) {
+		struct vc_dmaman *dmaman = dev_get_drvdata(dmaman_dev);
+		int rc;
+
+		device_lock(dmaman_dev);
+		rc = vc_dmaman_chan_free(dmaman, channel);
+		device_unlock(dmaman_dev);
+
+		return rc;
+	} else
+		return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_chan_free);
+
+static int dev_dmaman_register(const char *dev_name, struct device *dev)
+{
+	int rc = dmaman_dev ? -EINVAL : 0;
+	dmaman_dev = dev;
+	return rc;
+}
+
+static void dev_dmaman_deregister(const char *dev_name, struct device *dev)
+{
+	dmaman_dev = NULL;
+}
+
+/*****************************************************************************\
+ *									     *
+ * DMA Device								     *
+ *									     *
+\*****************************************************************************/
+
+static int dmachans = -1; /* module parameter */
+
+static int bcm_dmaman_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	struct vc_dmaman *dmaman;
+	struct resource *dma_res = NULL;
+	void __iomem *dma_base = NULL;
+	int have_dma_region = 0;
+
+	dmaman = kzalloc(sizeof(*dmaman), GFP_KERNEL);
+	if (NULL == dmaman) {
+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
+		       "DMA management memory\n");
+		ret = -ENOMEM;
+	} else {
+
+		dma_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		if (dma_res == NULL) {
+			printk(KERN_ERR DRIVER_NAME ": failed to obtain memory "
+			       "resource\n");
+			ret = -ENODEV;
+		} else if (!request_mem_region(dma_res->start,
+					       resource_size(dma_res),
+					       DRIVER_NAME)) {
+			dev_err(&pdev->dev, "cannot obtain DMA region\n");
+			ret = -EBUSY;
+		} else {
+			have_dma_region = 1;
+			dma_base = ioremap(dma_res->start,
+					   resource_size(dma_res));
+			if (!dma_base) {
+				dev_err(&pdev->dev, "cannot map DMA region\n");
+				ret = -ENOMEM;
+			} else {
+				/* use module parameter if one was provided */
+				if (dmachans > 0)
+					vc_dmaman_init(dmaman, dma_base,
+						       dmachans);
+				else
+					vc_dmaman_init(dmaman, dma_base,
+						       DEFAULT_DMACHAN_BITMAP);
+
+				platform_set_drvdata(pdev, dmaman);
+				dev_dmaman_register(DRIVER_NAME, &pdev->dev);
+
+				printk(KERN_INFO DRIVER_NAME ": DMA manager "
+				       "at %p\n", dma_base);
+			}
+		}
+	}
+	if (ret != 0) {
+		if (dma_base)
+			iounmap(dma_base);
+		if (dma_res && have_dma_region)
+			release_mem_region(dma_res->start,
+					   resource_size(dma_res));
+		if (dmaman)
+			kfree(dmaman);
+	}
+	return ret;
+}
+
+static int bcm_dmaman_remove(struct platform_device *pdev)
+{
+	struct vc_dmaman *dmaman = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	dev_dmaman_deregister(DRIVER_NAME, &pdev->dev);
+	kfree(dmaman);
+
+	return 0;
+}
+
+static struct platform_driver bcm_dmaman_driver = {
+	.probe = bcm_dmaman_probe,
+	.remove = bcm_dmaman_remove,
+
+	.driver = {
+		   .name = DRIVER_NAME,
+		   .owner = THIS_MODULE,
+		   },
+};
+
+/*****************************************************************************\
+ *									     *
+ * Driver init/exit							     *
+ *									     *
+\*****************************************************************************/
+
+static int __init bcm_dmaman_drv_init(void)
+{
+	int ret;
+
+	ret = platform_driver_register(&bcm_dmaman_driver);
+	if (ret != 0) {
+		printk(KERN_ERR DRIVER_NAME ": failed to register "
+		       "on platform\n");
+	}
+
+	return ret;
+}
+
+static void __exit bcm_dmaman_drv_exit(void)
+{
+	platform_driver_unregister(&bcm_dmaman_driver);
+}
+
+module_init(bcm_dmaman_drv_init);
+module_exit(bcm_dmaman_drv_exit);
+
+module_param(dmachans, int, 0644);
+
+MODULE_AUTHOR("Gray Girling <grayg@broadcom.com>");
+MODULE_DESCRIPTION("DMA channel manager driver");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM_DESC(dmachans, "Bitmap of DMA channels available to the ARM");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/dmaer.c linux-rpi/arch/arm/mach-bcm2709/dmaer.c
--- linux-3.18.10/arch/arm/mach-bcm2709/dmaer.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/dmaer.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,886 @@
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kdev_t.h>
+#include <linux/fs.h>
+#include <linux/cdev.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/timex.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/uaccess.h>
+#include <asm/atomic.h>
+#include <asm/cacheflush.h>
+#include <asm/io.h>
+
+#include <mach/dma.h>
+#include <mach/vc_support.h>
+
+#ifdef ECLIPSE_IGNORE
+
+#define __user
+#define __init
+#define __exit
+#define __iomem
+#define KERN_DEBUG
+#define KERN_ERR
+#define KERN_WARNING
+#define KERN_INFO
+#define _IOWR(a, b, c) b
+#define _IOW(a, b, c) b
+#define _IO(a, b) b
+
+#endif
+
+//#define inline
+
+#define PRINTK(args...) printk(args)
+//#define PRINTK_VERBOSE(args...) printk(args)
+//#define PRINTK(args...)
+#define PRINTK_VERBOSE(args...)
+
+/***** TYPES ****/
+#define PAGES_PER_LIST 500
+struct PageList
+{
+	struct page *m_pPages[PAGES_PER_LIST];
+	unsigned int m_used;
+	struct PageList *m_pNext;
+};
+
+struct VmaPageList
+{
+	//each vma has a linked list of pages associated with it
+	struct PageList *m_pPageHead;
+	struct PageList *m_pPageTail;
+	unsigned int m_refCount;
+};
+
+struct DmaControlBlock
+{
+	unsigned int m_transferInfo;
+	void __user *m_pSourceAddr;
+	void __user *m_pDestAddr;
+	unsigned int m_xferLen;
+	unsigned int m_tdStride;
+	struct DmaControlBlock *m_pNext;
+	unsigned int m_blank1, m_blank2;
+};
+
+/***** DEFINES ******/
+//magic number defining the module
+#define DMA_MAGIC		0xdd
+
+//do user virtual to physical translation of the CB chain
+#define DMA_PREPARE		_IOWR(DMA_MAGIC, 0, struct DmaControlBlock *)
+
+//kick the pre-prepared CB chain
+#define DMA_KICK		_IOW(DMA_MAGIC, 1, struct DmaControlBlock *)
+
+//prepare it, kick it, wait for it
+#define DMA_PREPARE_KICK_WAIT	_IOWR(DMA_MAGIC, 2, struct DmaControlBlock *)
+
+//prepare it, kick it, don't wait for it
+#define DMA_PREPARE_KICK	_IOWR(DMA_MAGIC, 3, struct DmaControlBlock *)
+
+//not currently implemented
+#define DMA_WAIT_ONE		_IO(DMA_MAGIC, 4, struct DmaControlBlock *)
+
+//wait on all kicked CB chains
+#define DMA_WAIT_ALL		_IO(DMA_MAGIC, 5)
+
+//in order to discover the largest AXI burst that should be programmed into the transfer params
+#define DMA_MAX_BURST		_IO(DMA_MAGIC, 6)
+
+//set the address range through which the user address is assumed to already by a physical address
+#define DMA_SET_MIN_PHYS	_IOW(DMA_MAGIC, 7, unsigned long)
+#define DMA_SET_MAX_PHYS	_IOW(DMA_MAGIC, 8, unsigned long)
+#define DMA_SET_PHYS_OFFSET	_IOW(DMA_MAGIC, 9, unsigned long)
+
+//used to define the size for the CMA-based allocation *in pages*, can only be done once once the file is opened
+#define DMA_CMA_SET_SIZE	_IOW(DMA_MAGIC, 10, unsigned long)
+
+//used to get the version of the module, to test for a capability
+#define DMA_GET_VERSION		_IO(DMA_MAGIC, 99)
+
+#define VERSION_NUMBER 1
+
+#define VIRT_TO_BUS_CACHE_SIZE 8
+
+/***** FILE OPS *****/
+static int Open(struct inode *pInode, struct file *pFile);
+static int Release(struct inode *pInode, struct file *pFile);
+static long Ioctl(struct file *pFile, unsigned int cmd, unsigned long arg);
+static ssize_t Read(struct file *pFile, char __user *pUser, size_t count, loff_t *offp);
+static int Mmap(struct file *pFile, struct vm_area_struct *pVma);
+
+/***** VMA OPS ****/
+static void VmaOpen4k(struct vm_area_struct *pVma);
+static void VmaClose4k(struct vm_area_struct *pVma);
+static int VmaFault4k(struct vm_area_struct *pVma, struct vm_fault *pVmf);
+
+/**** DMA PROTOTYPES */
+static struct DmaControlBlock __user *DmaPrepare(struct DmaControlBlock __user *pUserCB, int *pError);
+static int DmaKick(struct DmaControlBlock __user *pUserCB);
+static void DmaWaitAll(void);
+
+/**** GENERIC ****/
+static int __init dmaer_init(void);
+static void __exit dmaer_exit(void);
+
+/*** OPS ***/
+static struct vm_operations_struct g_vmOps4k = {
+	.open = VmaOpen4k,
+	.close = VmaClose4k,
+	.fault = VmaFault4k,
+};
+
+static struct file_operations g_fOps = {
+	.owner = THIS_MODULE,
+	.llseek = 0,
+	.read = Read,
+	.write = 0,
+	.unlocked_ioctl = Ioctl,
+	.open = Open,
+	.release = Release,
+	.mmap = Mmap,
+};
+
+/***** GLOBALS ******/
+static dev_t g_majorMinor;
+
+//tracking usage of the two files
+static atomic_t g_oneLock4k = ATOMIC_INIT(1);
+
+//device operations
+static struct cdev g_cDev;
+static int g_trackedPages = 0;
+
+//dma control
+static unsigned int *g_pDmaChanBase;
+static int g_dmaIrq;
+static int g_dmaChan;
+
+//cma allocation
+static int g_cmaHandle;
+
+//user virtual to bus address translation acceleration
+static unsigned long g_virtAddr[VIRT_TO_BUS_CACHE_SIZE];
+static unsigned long g_busAddr[VIRT_TO_BUS_CACHE_SIZE];
+static unsigned long g_cbVirtAddr;
+static unsigned long g_cbBusAddr;
+static int g_cacheInsertAt;
+static int g_cacheHit, g_cacheMiss;
+
+//off by default
+static void __user *g_pMinPhys;
+static void __user *g_pMaxPhys;
+static unsigned long g_physOffset;
+
+/****** CACHE OPERATIONS ********/
+static inline void FlushAddrCache(void)
+{
+	int count = 0;
+	for (count = 0; count < VIRT_TO_BUS_CACHE_SIZE; count++)
+		g_virtAddr[count] = 0xffffffff;			//never going to match as we always chop the bottom bits anyway
+
+	g_cbVirtAddr = 0xffffffff;
+
+	g_cacheInsertAt = 0;
+}
+
+//translate from a user virtual address to a bus address by mapping the page
+//NB this won't lock a page in memory, so to avoid potential paging issues using kernel logical addresses
+static inline void __iomem *UserVirtualToBus(void __user *pUser)
+{
+	int mapped;
+	struct page *pPage;
+	void *phys;
+
+	//map it (requiring that the pointer points to something that does not hang off the page boundary)
+	mapped = get_user_pages(current, current->mm,
+		(unsigned long)pUser, 1,
+		1, 0,
+		&pPage,
+		0);
+
+	if (mapped <= 0)		//error
+		return 0;
+
+	PRINTK_VERBOSE(KERN_DEBUG "user virtual %p arm phys %p bus %p\n",
+			pUser, page_address(pPage), (void __iomem *)__virt_to_bus(page_address(pPage)));
+
+	//get the arm physical address
+	phys = page_address(pPage) + offset_in_page(pUser);
+	page_cache_release(pPage);
+
+	//and now the bus address
+	return (void __iomem *)__virt_to_bus(phys);
+}
+
+static inline void __iomem *UserVirtualToBusViaCbCache(void __user *pUser)
+{
+	unsigned long virtual_page = (unsigned long)pUser & ~4095;
+	unsigned long page_offset = (unsigned long)pUser & 4095;
+	unsigned long bus_addr;
+
+	if (g_cbVirtAddr == virtual_page)
+	{
+		bus_addr = g_cbBusAddr + page_offset;
+		g_cacheHit++;
+		return (void __iomem *)bus_addr;
+	}
+	else
+	{
+		bus_addr = (unsigned long)UserVirtualToBus(pUser);
+
+		if (!bus_addr)
+			return 0;
+
+		g_cbVirtAddr = virtual_page;
+		g_cbBusAddr = bus_addr & ~4095;
+		g_cacheMiss++;
+
+		return (void __iomem *)bus_addr;
+	}
+}
+
+//do the same as above, by query our virt->bus cache
+static inline void __iomem *UserVirtualToBusViaCache(void __user *pUser)
+{
+	int count;
+	//get the page and its offset
+	unsigned long virtual_page = (unsigned long)pUser & ~4095;
+	unsigned long page_offset = (unsigned long)pUser & 4095;
+	unsigned long bus_addr;
+
+	if (pUser >= g_pMinPhys && pUser < g_pMaxPhys)
+	{
+		PRINTK_VERBOSE(KERN_DEBUG "user->phys passthrough on %p\n", pUser);
+		return (void __iomem *)((unsigned long)pUser + g_physOffset);
+	}
+
+	//check the cache for our entry
+	for (count = 0; count < VIRT_TO_BUS_CACHE_SIZE; count++)
+		if (g_virtAddr[count] == virtual_page)
+		{
+			bus_addr = g_busAddr[count] + page_offset;
+			g_cacheHit++;
+			return (void __iomem *)bus_addr;
+		}
+
+	//not found, look up manually and then insert its page address
+	bus_addr = (unsigned long)UserVirtualToBus(pUser);
+
+	if (!bus_addr)
+		return 0;
+
+	g_virtAddr[g_cacheInsertAt] = virtual_page;
+	g_busAddr[g_cacheInsertAt] = bus_addr & ~4095;
+
+	//round robin
+	g_cacheInsertAt++;
+	if (g_cacheInsertAt == VIRT_TO_BUS_CACHE_SIZE)
+		g_cacheInsertAt = 0;
+
+	g_cacheMiss++;
+
+	return (void __iomem *)bus_addr;
+}
+
+/***** FILE OPERATIONS ****/
+static int Open(struct inode *pInode, struct file *pFile)
+{
+	PRINTK(KERN_DEBUG "file opening: %d/%d\n", imajor(pInode), iminor(pInode));
+
+	//check which device we are
+	if (iminor(pInode) == 0)		//4k
+	{
+		//only one at a time
+		if (!atomic_dec_and_test(&g_oneLock4k))
+		{
+			atomic_inc(&g_oneLock4k);
+			return -EBUSY;
+		}
+	}
+	else
+		return -EINVAL;
+
+	//todo there will be trouble if two different processes open the files
+
+	//reset after any file is opened
+	g_pMinPhys = (void __user *)-1;
+	g_pMaxPhys = (void __user *)0;
+	g_physOffset = 0;
+	g_cmaHandle = 0;
+
+	return 0;
+}
+
+static int Release(struct inode *pInode, struct file *pFile)
+{
+	PRINTK(KERN_DEBUG "file closing, %d pages tracked\n", g_trackedPages);
+	if (g_trackedPages)
+		PRINTK(KERN_ERR "we\'re leaking memory!\n");
+
+	//wait for any dmas to finish
+	DmaWaitAll();
+
+	//free this memory on the application closing the file or it crashing (implicitly closing the file)
+	if (g_cmaHandle)
+	{
+		PRINTK(KERN_DEBUG "unlocking vc memory\n");
+		if (UnlockVcMemory(g_cmaHandle))
+			PRINTK(KERN_ERR "uh-oh, unable to unlock vc memory!\n");
+		PRINTK(KERN_DEBUG "releasing vc memory\n");
+		if (ReleaseVcMemory(g_cmaHandle))
+			PRINTK(KERN_ERR "uh-oh, unable to release vc memory!\n");
+	}
+
+	if (iminor(pInode) == 0)
+		atomic_inc(&g_oneLock4k);
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
+static struct DmaControlBlock __user *DmaPrepare(struct DmaControlBlock __user *pUserCB, int *pError)
+{
+	struct DmaControlBlock kernCB;
+	struct DmaControlBlock __user *pUNext;
+	void __iomem *pSourceBus, __iomem *pDestBus;
+
+	//get the control block into kernel memory so we can work on it
+	if (copy_from_user(&kernCB, pUserCB, sizeof(struct DmaControlBlock)) != 0)
+	{
+		PRINTK(KERN_ERR "copy_from_user failed for user cb %p\n", pUserCB);
+		*pError = 1;
+		return 0;
+	}
+
+	if (kernCB.m_pSourceAddr == 0 || kernCB.m_pDestAddr == 0)
+	{
+		PRINTK(KERN_ERR "faulty source (%p) dest (%p) addresses for user cb %p\n",
+			kernCB.m_pSourceAddr, kernCB.m_pDestAddr, pUserCB);
+		*pError = 1;
+		return 0;
+	}
+
+	pSourceBus = UserVirtualToBusViaCache(kernCB.m_pSourceAddr);
+	pDestBus = UserVirtualToBusViaCache(kernCB.m_pDestAddr);
+
+	if (!pSourceBus || !pDestBus)
+	{
+		PRINTK(KERN_ERR "virtual to bus translation failure for source/dest %p/%p->%p/%p\n",
+				kernCB.m_pSourceAddr, kernCB.m_pDestAddr,
+				pSourceBus, pDestBus);
+		*pError = 1;
+		return 0;
+	}
+
+	//update the user structure with the new bus addresses
+	kernCB.m_pSourceAddr = pSourceBus;
+	kernCB.m_pDestAddr = pDestBus;
+
+	PRINTK_VERBOSE(KERN_DEBUG "final source %p dest %p\n", kernCB.m_pSourceAddr, kernCB.m_pDestAddr);
+
+	//sort out the bus address for the next block
+	pUNext = kernCB.m_pNext;
+
+	if (kernCB.m_pNext)
+	{
+		void __iomem *pNextBus;
+		pNextBus = UserVirtualToBusViaCbCache(kernCB.m_pNext);
+
+		if (!pNextBus)
+		{
+			PRINTK(KERN_ERR "virtual to bus translation failure for m_pNext\n");
+			*pError = 1;
+			return 0;
+		}
+
+		//update the pointer with the bus address
+		kernCB.m_pNext = pNextBus;
+	}
+
+	//write it back to user space
+	if (copy_to_user(pUserCB, &kernCB, sizeof(struct DmaControlBlock)) != 0)
+	{
+		PRINTK(KERN_ERR "copy_to_user failed for cb %p\n", pUserCB);
+		*pError = 1;
+		return 0;
+	}
+
+	__cpuc_flush_dcache_area(pUserCB, 32);
+
+	*pError = 0;
+	return pUNext;
+}
+
+static int DmaKick(struct DmaControlBlock __user *pUserCB)
+{
+	void __iomem *pBusCB;
+
+	pBusCB = UserVirtualToBusViaCbCache(pUserCB);
+	if (!pBusCB)
+	{
+		PRINTK(KERN_ERR "virtual to bus translation failure for cb\n");
+		return 1;
+	}
+
+	//flush_cache_all();
+
+	bcm_dma_start(g_pDmaChanBase, (dma_addr_t)pBusCB);
+
+	return 0;
+}
+
+static void DmaWaitAll(void)
+{
+	int counter = 0;
+	volatile int inner_count;
+	volatile unsigned int cs;
+	unsigned long time_before, time_after;
+
+	time_before = jiffies;
+	//bcm_dma_wait_idle(g_pDmaChanBase);
+	dsb();
+
+	cs = readl(g_pDmaChanBase);
+
+	while ((cs & 1) == 1)
+	{
+		cs = readl(g_pDmaChanBase);
+		counter++;
+
+		for (inner_count = 0; inner_count < 32; inner_count++);
+
+		asm volatile ("MCR p15,0,r0,c7,c0,4 \n");
+		//cpu_do_idle();
+		if (counter >= 1000000)
+		{
+			PRINTK(KERN_WARNING "DMA failed to finish in a timely fashion\n");
+			break;
+		}
+	}
+	time_after = jiffies;
+	PRINTK_VERBOSE(KERN_DEBUG "done, counter %d, cs %08x", counter, cs);
+	PRINTK_VERBOSE(KERN_DEBUG "took %ld jiffies, %d HZ\n", time_after - time_before, HZ);
+}
+
+static long Ioctl(struct file *pFile, unsigned int cmd, unsigned long arg)
+{
+	int error = 0;
+	PRINTK_VERBOSE(KERN_DEBUG "ioctl cmd %x arg %lx\n", cmd, arg);
+
+	switch (cmd)
+	{
+	case DMA_PREPARE:
+	case DMA_PREPARE_KICK:
+	case DMA_PREPARE_KICK_WAIT:
+		{
+			struct DmaControlBlock __user *pUCB = (struct DmaControlBlock *)arg;
+			int steps = 0;
+			unsigned long start_time = jiffies;
+			(void)start_time;
+
+			//flush our address cache
+			FlushAddrCache();
+
+			PRINTK_VERBOSE(KERN_DEBUG "dma prepare\n");
+
+			//do virtual to bus translation for each entry
+			do
+			{
+				pUCB = DmaPrepare(pUCB, &error);
+			} while (error == 0 && ++steps && pUCB);
+			PRINTK_VERBOSE(KERN_DEBUG "prepare done in %d steps, %ld\n", steps, jiffies - start_time);
+
+			//carry straight on if we want to kick too
+			if (cmd == DMA_PREPARE || error)
+			{
+				PRINTK_VERBOSE(KERN_DEBUG "falling out\n");
+				return error ? -EINVAL : 0;
+			}
+		}
+	case DMA_KICK:
+		PRINTK_VERBOSE(KERN_DEBUG "dma begin\n");
+
+		if (cmd == DMA_KICK)
+			FlushAddrCache();
+
+		DmaKick((struct DmaControlBlock __user *)arg);
+
+		if (cmd != DMA_PREPARE_KICK_WAIT)
+			break;
+/*	case DMA_WAIT_ONE:
+		//PRINTK(KERN_DEBUG "dma wait one\n");
+		break;*/
+	case DMA_WAIT_ALL:
+		//PRINTK(KERN_DEBUG "dma wait all\n");
+		DmaWaitAll();
+		break;
+	case DMA_MAX_BURST:
+		if (g_dmaChan == 0)
+			return 10;
+		else
+			return 5;
+	case DMA_SET_MIN_PHYS:
+		g_pMinPhys = (void __user *)arg;
+		PRINTK(KERN_DEBUG "min/max user/phys bypass set to %p %p\n", g_pMinPhys, g_pMaxPhys);
+		break;
+	case DMA_SET_MAX_PHYS:
+		g_pMaxPhys = (void __user *)arg;
+		PRINTK(KERN_DEBUG "min/max user/phys bypass set to %p %p\n", g_pMinPhys, g_pMaxPhys);
+		break;
+	case DMA_SET_PHYS_OFFSET:
+		g_physOffset = arg;
+		PRINTK(KERN_DEBUG "user/phys bypass offset set to %ld\n", g_physOffset);
+		break;
+	case DMA_CMA_SET_SIZE:
+	{
+		unsigned int pBusAddr;
+
+		if (g_cmaHandle)
+		{
+			PRINTK(KERN_ERR "memory has already been allocated (handle %d)\n", g_cmaHandle);
+			return -EINVAL;
+		}
+
+		PRINTK(KERN_INFO "allocating %ld bytes of VC memory\n", arg * 4096);
+
+		//get the memory
+		if (AllocateVcMemory(&g_cmaHandle, arg * 4096, 4096, MEM_FLAG_L1_NONALLOCATING | MEM_FLAG_NO_INIT | MEM_FLAG_HINT_PERMALOCK))
+		{
+			PRINTK(KERN_ERR "failed to allocate %ld bytes of VC memory\n", arg * 4096);
+			g_cmaHandle = 0;
+			return -EINVAL;
+		}
+
+		//get an address for it
+		PRINTK(KERN_INFO "trying to map VC memory\n");
+
+		if (LockVcMemory(&pBusAddr, g_cmaHandle))
+		{
+			PRINTK(KERN_ERR "failed to map CMA handle %d, releasing memory\n", g_cmaHandle);
+			ReleaseVcMemory(g_cmaHandle);
+			g_cmaHandle = 0;
+		}
+
+		PRINTK(KERN_INFO "bus address for CMA memory is %x\n", pBusAddr);
+		return pBusAddr;
+	}
+	case DMA_GET_VERSION:
+		PRINTK(KERN_DEBUG "returning version number, %d\n", VERSION_NUMBER);
+		return VERSION_NUMBER;
+	default:
+		PRINTK(KERN_DEBUG "unknown ioctl: %d\n", cmd);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static ssize_t Read(struct file *pFile, char __user *pUser, size_t count, loff_t *offp)
+{
+	return -EIO;
+}
+
+static int Mmap(struct file *pFile, struct vm_area_struct *pVma)
+{
+	struct PageList *pPages;
+	struct VmaPageList *pVmaList;
+
+	PRINTK_VERBOSE(KERN_DEBUG "MMAP vma %p, length %ld (%s %d)\n",
+		pVma, pVma->vm_end - pVma->vm_start,
+		current->comm, current->pid);
+	PRINTK_VERBOSE(KERN_DEBUG "MMAP %p %d (tracked %d)\n", pVma, current->pid, g_trackedPages);
+
+	//make a new page list
+	pPages = (struct PageList *)kmalloc(sizeof(struct PageList), GFP_KERNEL);
+	if (!pPages)
+	{
+		PRINTK(KERN_ERR "couldn\'t allocate a new page list (%s %d)\n",
+			current->comm, current->pid);
+		return -ENOMEM;
+	}
+
+	//clear the page list
+	pPages->m_used = 0;
+	pPages->m_pNext = 0;
+
+	//insert our vma and new page list somewhere
+	if (!pVma->vm_private_data)
+	{
+		struct VmaPageList *pList;
+
+		PRINTK_VERBOSE(KERN_DEBUG "new vma list, making new one (%s %d)\n",
+			current->comm, current->pid);
+
+		//make a new vma list
+		pList = (struct VmaPageList *)kmalloc(sizeof(struct VmaPageList), GFP_KERNEL);
+		if (!pList)
+		{
+			PRINTK(KERN_ERR "couldn\'t allocate vma page list (%s %d)\n",
+				current->comm, current->pid);
+			kfree(pPages);
+			return -ENOMEM;
+		}
+
+		//clear this list
+		pVma->vm_private_data = (void *)pList;
+		pList->m_refCount = 0;
+	}
+
+	pVmaList = (struct VmaPageList *)pVma->vm_private_data;
+
+	//add it to the vma list
+	pVmaList->m_pPageHead = pPages;
+	pVmaList->m_pPageTail = pPages;
+
+	pVma->vm_ops = &g_vmOps4k;
+	pVma->vm_flags |= VM_IO;
+
+	VmaOpen4k(pVma);
+
+	return 0;
+}
+
+/****** VMA OPERATIONS ******/
+
+static void VmaOpen4k(struct vm_area_struct *pVma)
+{
+	struct VmaPageList *pVmaList;
+
+	PRINTK_VERBOSE(KERN_DEBUG "vma open %p private %p (%s %d), %d live pages\n", pVma, pVma->vm_private_data, current->comm, current->pid, g_trackedPages);
+	PRINTK_VERBOSE(KERN_DEBUG "OPEN %p %d %ld pages (tracked pages %d)\n",
+		pVma, current->pid, (pVma->vm_end - pVma->vm_start) >> 12,
+		g_trackedPages);
+
+	pVmaList = (struct VmaPageList *)pVma->vm_private_data;
+
+	if (pVmaList)
+	{
+		pVmaList->m_refCount++;
+		PRINTK_VERBOSE(KERN_DEBUG "ref count is now %d\n", pVmaList->m_refCount);
+	}
+	else
+	{
+		PRINTK_VERBOSE(KERN_DEBUG "err, open but no vma page list\n");
+	}
+}
+
+static void VmaClose4k(struct vm_area_struct *pVma)
+{
+	struct VmaPageList *pVmaList;
+	int freed = 0;
+
+	PRINTK_VERBOSE(KERN_DEBUG "vma close %p private %p (%s %d)\n", pVma, pVma->vm_private_data, current->comm, current->pid);
+
+	//wait for any dmas to finish
+	DmaWaitAll();
+
+	//find our vma in the list
+	pVmaList = (struct VmaPageList *)pVma->vm_private_data;
+
+	//may be a fork
+	if (pVmaList)
+	{
+		struct PageList *pPages;
+
+		pVmaList->m_refCount--;
+
+		if (pVmaList->m_refCount == 0)
+		{
+			PRINTK_VERBOSE(KERN_DEBUG "found vma, freeing pages (%s %d)\n",
+				current->comm, current->pid);
+
+			pPages = pVmaList->m_pPageHead;
+
+			if (!pPages)
+			{
+				PRINTK(KERN_ERR "no page list (%s %d)!\n",
+					current->comm, current->pid);
+				return;
+			}
+
+			while (pPages)
+			{
+				struct PageList *next;
+				int count;
+
+				PRINTK_VERBOSE(KERN_DEBUG "page list (%s %d)\n",
+					current->comm, current->pid);
+
+				next = pPages->m_pNext;
+				for (count = 0; count < pPages->m_used; count++)
+				{
+					PRINTK_VERBOSE(KERN_DEBUG "freeing page %p (%s %d)\n",
+						pPages->m_pPages[count],
+						current->comm, current->pid);
+					__free_pages(pPages->m_pPages[count], 0);
+					g_trackedPages--;
+					freed++;
+				}
+
+				PRINTK_VERBOSE(KERN_DEBUG "freeing page list (%s %d)\n",
+					current->comm, current->pid);
+				kfree(pPages);
+				pPages = next;
+			}
+
+			//remove our vma from the list
+			kfree(pVmaList);
+			pVma->vm_private_data = 0;
+		}
+		else
+		{
+			PRINTK_VERBOSE(KERN_DEBUG "ref count is %d, not closing\n", pVmaList->m_refCount);
+		}
+	}
+	else
+	{
+		PRINTK_VERBOSE(KERN_ERR "uh-oh, vma %p not found (%s %d)!\n", pVma, current->comm, current->pid);
+		PRINTK_VERBOSE(KERN_ERR "CLOSE ERR\n");
+	}
+
+	PRINTK_VERBOSE(KERN_DEBUG "CLOSE %p %d %d pages (tracked pages %d)",
+		pVma, current->pid, freed, g_trackedPages);
+
+	PRINTK_VERBOSE(KERN_DEBUG "%d pages open\n", g_trackedPages);
+}
+
+static int VmaFault4k(struct vm_area_struct *pVma, struct vm_fault *pVmf)
+{
+	PRINTK_VERBOSE(KERN_DEBUG "vma fault for vma %p private %p at offset %ld (%s %d)\n", pVma, pVma->vm_private_data, pVmf->pgoff,
+		current->comm, current->pid);
+	PRINTK_VERBOSE(KERN_DEBUG "FAULT\n");
+	pVmf->page = alloc_page(GFP_KERNEL);
+
+	if (pVmf->page)
+	{
+		PRINTK_VERBOSE(KERN_DEBUG "alloc page virtual %p\n", page_address(pVmf->page));
+	}
+
+	if (!pVmf->page)
+	{
+		PRINTK(KERN_ERR "vma fault oom (%s %d)\n", current->comm, current->pid);
+		return VM_FAULT_OOM;
+	}
+	else
+	{
+		struct VmaPageList *pVmaList;
+
+		get_page(pVmf->page);
+		g_trackedPages++;
+
+		//find our vma in the list
+		pVmaList = (struct VmaPageList *)pVma->vm_private_data;
+
+		if (pVmaList)
+		{
+			PRINTK_VERBOSE(KERN_DEBUG "vma found (%s %d)\n", current->comm, current->pid);
+
+			if (pVmaList->m_pPageTail->m_used == PAGES_PER_LIST)
+			{
+				PRINTK_VERBOSE(KERN_DEBUG "making new page list (%s %d)\n", current->comm, current->pid);
+				//making a new page list
+				pVmaList->m_pPageTail->m_pNext = (struct PageList *)kmalloc(sizeof(struct PageList), GFP_KERNEL);
+				if (!pVmaList->m_pPageTail->m_pNext)
+					return -ENOMEM;
+
+				//update the tail pointer
+				pVmaList->m_pPageTail = pVmaList->m_pPageTail->m_pNext;
+				pVmaList->m_pPageTail->m_used = 0;
+				pVmaList->m_pPageTail->m_pNext = 0;
+			}
+
+			PRINTK_VERBOSE(KERN_DEBUG "adding page to list (%s %d)\n", current->comm, current->pid);
+
+			pVmaList->m_pPageTail->m_pPages[pVmaList->m_pPageTail->m_used] = pVmf->page;
+			pVmaList->m_pPageTail->m_used++;
+		}
+		else
+			PRINTK(KERN_ERR "returned page for vma we don\'t know %p (%s %d)\n", pVma, current->comm, current->pid);
+
+		return 0;
+	}
+}
+
+/****** GENERIC FUNCTIONS ******/
+static int __init dmaer_init(void)
+{
+	int result = alloc_chrdev_region(&g_majorMinor, 0, 1, "dmaer");
+	if (result < 0)
+	{
+		PRINTK(KERN_ERR "unable to get major device number\n");
+		return result;
+	}
+	else
+		PRINTK(KERN_DEBUG "major device number %d\n", MAJOR(g_majorMinor));
+
+	PRINTK(KERN_DEBUG "vma list size %d, page list size %d, page size %ld\n",
+		sizeof(struct VmaPageList), sizeof(struct PageList), PAGE_SIZE);
+
+	//get a dma channel to work with
+	result = bcm_dma_chan_alloc(BCM_DMA_FEATURE_FAST, (void **)&g_pDmaChanBase, &g_dmaIrq);
+
+	//uncomment to force to channel 0
+	//result = 0;
+	//g_pDmaChanBase = 0xce808000;
+
+	if (result < 0)
+	{
+		PRINTK(KERN_ERR "failed to allocate dma channel\n");
+		cdev_del(&g_cDev);
+		unregister_chrdev_region(g_majorMinor, 1);
+	}
+
+	//reset the channel
+	PRINTK(KERN_DEBUG "allocated dma channel %d (%p), initial state %08x\n", result, g_pDmaChanBase, *g_pDmaChanBase);
+	*g_pDmaChanBase = 1 << 31;
+	PRINTK(KERN_DEBUG "post-reset %08x\n", *g_pDmaChanBase);
+
+	g_dmaChan = result;
+
+	//clear the cache stats
+	g_cacheHit = 0;
+	g_cacheMiss = 0;
+
+	//register our device - after this we are go go go
+	cdev_init(&g_cDev, &g_fOps);
+	g_cDev.owner = THIS_MODULE;
+	g_cDev.ops = &g_fOps;
+
+	result = cdev_add(&g_cDev, g_majorMinor, 1);
+	if (result < 0)
+	{
+		PRINTK(KERN_ERR "failed to add character device\n");
+		unregister_chrdev_region(g_majorMinor, 1);
+		bcm_dma_chan_free(g_dmaChan);
+		return result;
+	}
+
+	return 0;
+}
+
+static void __exit dmaer_exit(void)
+{
+	PRINTK(KERN_INFO "closing dmaer device, cache stats: %d hits %d misses\n", g_cacheHit, g_cacheMiss);
+	//unregister the device
+	cdev_del(&g_cDev);
+	unregister_chrdev_region(g_majorMinor, 1);
+	//free the dma channel
+	bcm_dma_chan_free(g_dmaChan);
+}
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Simon Hall");
+module_init(dmaer_init);
+module_exit(dmaer_exit);
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/arm_control.h linux-rpi/arch/arm/mach-bcm2709/include/mach/arm_control.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/arm_control.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/arm_control.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,493 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/arm_control.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __BCM2708_ARM_CONTROL_H
+#define __BCM2708_ARM_CONTROL_H
+
+/*
+ * Definitions and addresses for the ARM CONTROL logic
+ * This file is manually generated.
+ */
+
+#define ARM_BASE  0x7E00B000
+
+/* Basic configuration */
+#define ARM_CONTROL0  HW_REGISTER_RW(ARM_BASE+0x000)
+#define ARM_C0_SIZ128M   0x00000000
+#define ARM_C0_SIZ256M   0x00000001
+#define ARM_C0_SIZ512M   0x00000002
+#define ARM_C0_SIZ1G     0x00000003
+#define ARM_C0_BRESP0    0x00000000
+#define ARM_C0_BRESP1    0x00000004
+#define ARM_C0_BRESP2    0x00000008
+#define ARM_C0_BOOTHI    0x00000010
+#define ARM_C0_UNUSED05  0x00000020 /* free */
+#define ARM_C0_FULLPERI  0x00000040
+#define ARM_C0_UNUSED78  0x00000180 /* free */
+#define ARM_C0_JTAGMASK  0x00000E00
+#define ARM_C0_JTAGOFF   0x00000000
+#define ARM_C0_JTAGBASH  0x00000800 /* Debug on GPIO off */
+#define ARM_C0_JTAGGPIO  0x00000C00 /* Debug on GPIO on */
+#define ARM_C0_APROTMSK  0x0000F000
+#define ARM_C0_DBG0SYNC  0x00010000 /* VPU0 halt sync */
+#define ARM_C0_DBG1SYNC  0x00020000 /* VPU1 halt sync */
+#define ARM_C0_SWDBGREQ  0x00040000 /* HW debug request */
+#define ARM_C0_PASSHALT  0x00080000 /* ARM halt passed to debugger */
+#define ARM_C0_PRIO_PER  0x00F00000 /* per priority mask */
+#define ARM_C0_PRIO_L2   0x0F000000
+#define ARM_C0_PRIO_UC   0xF0000000
+
+#define ARM_C0_APROTPASS  0x0000A000 /* Translate 1:1 */
+#define ARM_C0_APROTUSER  0x00000000 /* Only user mode */
+#define ARM_C0_APROTSYST  0x0000F000 /* Only system mode */
+
+
+#define ARM_CONTROL1  HW_REGISTER_RW(ARM_BASE+0x440)
+#define ARM_C1_TIMER     0x00000001 /* re-route timer IRQ  to VC */
+#define ARM_C1_MAIL      0x00000002 /* re-route Mail IRQ   to VC */
+#define ARM_C1_BELL0     0x00000004 /* re-route Doorbell 0 to VC */
+#define ARM_C1_BELL1     0x00000008 /* re-route Doorbell 1 to VC */
+#define ARM_C1_PERSON    0x00000100 /* peripherals on */
+#define ARM_C1_REQSTOP   0x00000200 /* ASYNC bridge request stop */
+
+#define ARM_STATUS    HW_REGISTER_RW(ARM_BASE+0x444)
+#define ARM_S_ACKSTOP    0x80000000 /* Bridge stopped */
+#define ARM_S_READPEND   0x000003FF /* pending reads counter */
+#define ARM_S_WRITPEND   0x000FFC00 /* pending writes counter */
+
+#define ARM_ERRHALT   HW_REGISTER_RW(ARM_BASE+0x448)
+#define ARM_EH_PERIBURST  0x00000001 /* Burst write seen on peri bus */
+#define ARM_EH_ILLADDRS1  0x00000002 /* Address bits 25-27 error */
+#define ARM_EH_ILLADDRS2  0x00000004 /* Address bits 31-28 error */
+#define ARM_EH_VPU0HALT   0x00000008 /* VPU0 halted & in debug mode */
+#define ARM_EH_VPU1HALT   0x00000010 /* VPU1 halted & in debug mode */
+#define ARM_EH_ARMHALT    0x00000020 /* ARM in halted debug mode */
+
+#define ARM_ID_SECURE HW_REGISTER_RW(ARM_BASE+0x00C)
+#define ARM_ID        HW_REGISTER_RW(ARM_BASE+0x44C)
+#define ARM_IDVAL        0x364D5241
+
+/* Translation memory */
+#define ARM_TRANSLATE HW_REGISTER_RW(ARM_BASE+0x100)
+/* 32 locations: 0x100.. 0x17F */
+/* 32 spare means we CAN go to 64 pages.... */
+
+
+/* Interrupts */
+#define ARM_IRQ_PEND0 HW_REGISTER_RW(ARM_BASE+0x200)        /* Top IRQ bits */
+#define ARM_I0_TIMER    0x00000001 /* timer IRQ */
+#define ARM_I0_MAIL     0x00000002 /* Mail IRQ */
+#define ARM_I0_BELL0    0x00000004 /* Doorbell 0 */
+#define ARM_I0_BELL1    0x00000008 /* Doorbell 1 */
+#define ARM_I0_BANK1    0x00000100 /* Bank1 IRQ */
+#define ARM_I0_BANK2    0x00000200 /* Bank2 IRQ */
+
+#define ARM_IRQ_PEND1 HW_REGISTER_RW(ARM_BASE+0x204) /* All bank1 IRQ bits */
+/* todo: all I1_interrupt sources */
+#define ARM_IRQ_PEND2 HW_REGISTER_RW(ARM_BASE+0x208) /* All bank2 IRQ bits */
+/* todo: all I2_interrupt sources */
+
+#define ARM_IRQ_FAST  HW_REGISTER_RW(ARM_BASE+0x20C) /* FIQ control */
+#define ARM_IF_INDEX    0x0000007F     /* FIQ select */
+#define ARM_IF_ENABLE   0x00000080     /* FIQ enable */
+#define ARM_IF_VCMASK   0x0000003F     /* FIQ = (index from VC source) */
+#define ARM_IF_TIMER    0x00000040     /* FIQ = ARM timer */
+#define ARM_IF_MAIL     0x00000041     /* FIQ = ARM Mail */
+#define ARM_IF_BELL0    0x00000042     /* FIQ = ARM Doorbell 0 */
+#define ARM_IF_BELL1    0x00000043     /* FIQ = ARM Doorbell 1 */
+#define ARM_IF_VP0HALT  0x00000044     /* FIQ = VPU0 Halt seen */
+#define ARM_IF_VP1HALT  0x00000045     /* FIQ = VPU1 Halt seen */
+#define ARM_IF_ILLEGAL  0x00000046     /* FIQ = Illegal access seen */
+
+#define ARM_IRQ_ENBL1 HW_REGISTER_RW(ARM_BASE+0x210) /* Bank1 enable bits */
+#define ARM_IRQ_ENBL2 HW_REGISTER_RW(ARM_BASE+0x214) /* Bank2 enable bits */
+#define ARM_IRQ_ENBL3 HW_REGISTER_RW(ARM_BASE+0x218) /* ARM irqs enable bits */
+#define ARM_IRQ_DIBL1 HW_REGISTER_RW(ARM_BASE+0x21C) /* Bank1 disable bits */
+#define ARM_IRQ_DIBL2 HW_REGISTER_RW(ARM_BASE+0x220) /* Bank2 disable bits */
+#define ARM_IRQ_DIBL3 HW_REGISTER_RW(ARM_BASE+0x224) /* ARM irqs disable bits */
+#define ARM_IE_TIMER    0x00000001     /* Timer IRQ */
+#define ARM_IE_MAIL     0x00000002     /* Mail IRQ */
+#define ARM_IE_BELL0    0x00000004     /* Doorbell 0 */
+#define ARM_IE_BELL1    0x00000008     /* Doorbell 1 */
+#define ARM_IE_VP0HALT  0x00000010     /* VPU0 Halt */
+#define ARM_IE_VP1HALT  0x00000020     /* VPU1 Halt */
+#define ARM_IE_ILLEGAL  0x00000040     /* Illegal access seen */
+
+/* Timer */
+/* For reg. fields see sp804 spec. */
+#define ARM_T_LOAD    HW_REGISTER_RW(ARM_BASE+0x400)
+#define ARM_T_VALUE   HW_REGISTER_RW(ARM_BASE+0x404)
+#define ARM_T_CONTROL HW_REGISTER_RW(ARM_BASE+0x408)
+#define ARM_T_IRQCNTL HW_REGISTER_RW(ARM_BASE+0x40C)
+#define ARM_T_RAWIRQ  HW_REGISTER_RW(ARM_BASE+0x410)
+#define ARM_T_MSKIRQ  HW_REGISTER_RW(ARM_BASE+0x414)
+#define ARM_T_RELOAD  HW_REGISTER_RW(ARM_BASE+0x418)
+#define ARM_T_PREDIV  HW_REGISTER_RW(ARM_BASE+0x41c)
+#define ARM_T_FREECNT HW_REGISTER_RW(ARM_BASE+0x420)
+
+#define TIMER_CTRL_ONESHOT  (1 << 0)
+#define TIMER_CTRL_32BIT    (1 << 1)
+#define TIMER_CTRL_DIV1     (0 << 2)
+#define TIMER_CTRL_DIV16    (1 << 2)
+#define TIMER_CTRL_DIV256   (2 << 2)
+#define TIMER_CTRL_IE       (1 << 5)
+#define TIMER_CTRL_PERIODIC (1 << 6)
+#define TIMER_CTRL_ENABLE   (1 << 7)
+#define TIMER_CTRL_DBGHALT  (1 << 8)
+#define TIMER_CTRL_ENAFREE  (1 << 9)
+#define TIMER_CTRL_FREEDIV_SHIFT 16)
+#define TIMER_CTRL_FREEDIV_MASK  0xff
+
+/* Semaphores, Doorbells, Mailboxes */
+#define ARM_SBM_OWN0  (ARM_BASE+0x800)
+#define ARM_SBM_OWN1  (ARM_BASE+0x900)
+#define ARM_SBM_OWN2  (ARM_BASE+0xA00)
+#define ARM_SBM_OWN3  (ARM_BASE+0xB00)
+
+/* MAILBOXES
+ * Register flags are common across all
+ * owner registers. See end of this section
+ *
+ * Semaphores, Doorbells, Mailboxes Owner 0
+ *
+ */
+
+#define ARM_0_SEMS       HW_REGISTER_RW(ARM_SBM_OWN0+0x00)
+#define ARM_0_SEM0       HW_REGISTER_RW(ARM_SBM_OWN0+0x00)
+#define ARM_0_SEM1       HW_REGISTER_RW(ARM_SBM_OWN0+0x04)
+#define ARM_0_SEM2       HW_REGISTER_RW(ARM_SBM_OWN0+0x08)
+#define ARM_0_SEM3       HW_REGISTER_RW(ARM_SBM_OWN0+0x0C)
+#define ARM_0_SEM4       HW_REGISTER_RW(ARM_SBM_OWN0+0x10)
+#define ARM_0_SEM5       HW_REGISTER_RW(ARM_SBM_OWN0+0x14)
+#define ARM_0_SEM6       HW_REGISTER_RW(ARM_SBM_OWN0+0x18)
+#define ARM_0_SEM7       HW_REGISTER_RW(ARM_SBM_OWN0+0x1C)
+#define ARM_0_BELL0      HW_REGISTER_RW(ARM_SBM_OWN0+0x40)
+#define ARM_0_BELL1      HW_REGISTER_RW(ARM_SBM_OWN0+0x44)
+#define ARM_0_BELL2      HW_REGISTER_RW(ARM_SBM_OWN0+0x48)
+#define ARM_0_BELL3      HW_REGISTER_RW(ARM_SBM_OWN0+0x4C)
+/* MAILBOX 0 access in Owner 0 area */
+/* Some addresses should ONLY be used by owner 0 */
+#define ARM_0_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN0+0x80)  /* .. 0x8C (4 locations) */
+#define ARM_0_MAIL0_RD   HW_REGISTER_RW(ARM_SBM_OWN0+0x80)  /* .. 0x8C (4 locations) Normal read */
+#define ARM_0_MAIL0_POL  HW_REGISTER_RW(ARM_SBM_OWN0+0x90)  /* none-pop read */
+#define ARM_0_MAIL0_SND  HW_REGISTER_RW(ARM_SBM_OWN0+0x94)  /* Sender read (only LS 2 bits) */
+#define ARM_0_MAIL0_STA  HW_REGISTER_RW(ARM_SBM_OWN0+0x98)  /* Status read */
+#define ARM_0_MAIL0_CNF  HW_REGISTER_RW(ARM_SBM_OWN0+0x9C)  /* Config read/write */
+/* MAILBOX 1 access in Owner 0 area */
+/* Owner 0 should only WRITE to this mailbox */
+#define ARM_0_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN0+0xA0)   /* .. 0xAC (4 locations) */
+/*#define ARM_0_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN0+0xA0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_0_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN0+0xB0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_0_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN0+0xB4) */ /* DO NOT USE THIS !!!!! */
+#define ARM_0_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN0+0xB8)   /* Status read */
+/*#define ARM_0_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN0+0xBC) */ /* DO NOT USE THIS !!!!! */
+/* General SEM, BELL, MAIL config/status */
+#define ARM_0_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN0+0xE0)  /* semaphore clear/debug register */
+#define ARM_0_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN0+0xE4)  /* Doorbells clear/debug register */
+#define ARM_0_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN0+0xF8)  /* ALL interrupts */
+#define ARM_0_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN0+0xFC)  /* IRQS pending for owner 0 */
+
+/* Semaphores, Doorbells, Mailboxes Owner 1 */
+#define ARM_1_SEMS       HW_REGISTER_RW(ARM_SBM_OWN1+0x00)
+#define ARM_1_SEM0       HW_REGISTER_RW(ARM_SBM_OWN1+0x00)
+#define ARM_1_SEM1       HW_REGISTER_RW(ARM_SBM_OWN1+0x04)
+#define ARM_1_SEM2       HW_REGISTER_RW(ARM_SBM_OWN1+0x08)
+#define ARM_1_SEM3       HW_REGISTER_RW(ARM_SBM_OWN1+0x0C)
+#define ARM_1_SEM4       HW_REGISTER_RW(ARM_SBM_OWN1+0x10)
+#define ARM_1_SEM5       HW_REGISTER_RW(ARM_SBM_OWN1+0x14)
+#define ARM_1_SEM6       HW_REGISTER_RW(ARM_SBM_OWN1+0x18)
+#define ARM_1_SEM7       HW_REGISTER_RW(ARM_SBM_OWN1+0x1C)
+#define ARM_1_BELL0      HW_REGISTER_RW(ARM_SBM_OWN1+0x40)
+#define ARM_1_BELL1      HW_REGISTER_RW(ARM_SBM_OWN1+0x44)
+#define ARM_1_BELL2      HW_REGISTER_RW(ARM_SBM_OWN1+0x48)
+#define ARM_1_BELL3      HW_REGISTER_RW(ARM_SBM_OWN1+0x4C)
+/* MAILBOX 0 access in Owner 0 area */
+/* Owner 1 should only WRITE to this mailbox */
+#define ARM_1_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN1+0x80)  /* .. 0x8C (4 locations) */
+/*#define ARM_1_MAIL0_RD  HW_REGISTER_RW(ARM_SBM_OWN1+0x80) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_1_MAIL0_POL HW_REGISTER_RW(ARM_SBM_OWN1+0x90) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_1_MAIL0_SND HW_REGISTER_RW(ARM_SBM_OWN1+0x94) */ /* DO NOT USE THIS !!!!! */
+#define ARM_1_MAIL0_STA  HW_REGISTER_RW(ARM_SBM_OWN1+0x98)  /* Status read */
+/*#define ARM_1_MAIL0_CNF HW_REGISTER_RW(ARM_SBM_OWN1+0x9C) */ /* DO NOT USE THIS !!!!! */
+/* MAILBOX 1 access in Owner 0 area */
+#define ARM_1_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN1+0xA0)  /* .. 0xAC (4 locations) */
+#define ARM_1_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN1+0xA0)  /* .. 0xAC (4 locations) Normal read */
+#define ARM_1_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN1+0xB0)  /* none-pop read */
+#define ARM_1_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN1+0xB4)  /* Sender read (only LS 2 bits) */
+#define ARM_1_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN1+0xB8)  /* Status read */
+#define ARM_1_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN1+0xBC)
+/* General SEM, BELL, MAIL config/status */
+#define ARM_1_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN1+0xE0)  /* semaphore clear/debug register */
+#define ARM_1_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN1+0xE4)  /* Doorbells clear/debug register */
+#define ARM_1_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN1+0xFC)  /* IRQS pending for owner 1 */
+#define ARM_1_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN1+0xF8)  /* ALL interrupts */
+
+/* Semaphores, Doorbells, Mailboxes Owner 2 */
+#define ARM_2_SEMS       HW_REGISTER_RW(ARM_SBM_OWN2+0x00)
+#define ARM_2_SEM0       HW_REGISTER_RW(ARM_SBM_OWN2+0x00)
+#define ARM_2_SEM1       HW_REGISTER_RW(ARM_SBM_OWN2+0x04)
+#define ARM_2_SEM2       HW_REGISTER_RW(ARM_SBM_OWN2+0x08)
+#define ARM_2_SEM3       HW_REGISTER_RW(ARM_SBM_OWN2+0x0C)
+#define ARM_2_SEM4       HW_REGISTER_RW(ARM_SBM_OWN2+0x10)
+#define ARM_2_SEM5       HW_REGISTER_RW(ARM_SBM_OWN2+0x14)
+#define ARM_2_SEM6       HW_REGISTER_RW(ARM_SBM_OWN2+0x18)
+#define ARM_2_SEM7       HW_REGISTER_RW(ARM_SBM_OWN2+0x1C)
+#define ARM_2_BELL0      HW_REGISTER_RW(ARM_SBM_OWN2+0x40)
+#define ARM_2_BELL1      HW_REGISTER_RW(ARM_SBM_OWN2+0x44)
+#define ARM_2_BELL2      HW_REGISTER_RW(ARM_SBM_OWN2+0x48)
+#define ARM_2_BELL3      HW_REGISTER_RW(ARM_SBM_OWN2+0x4C)
+/* MAILBOX 0 access in Owner 2 area */
+/* Owner 2 should only WRITE to this mailbox */
+#define ARM_2_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN2+0x80)   /* .. 0x8C (4 locations) */
+/*#define ARM_2_MAIL0_RD  HW_REGISTER_RW(ARM_SBM_OWN2+0x80)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL0_POL HW_REGISTER_RW(ARM_SBM_OWN2+0x90)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL0_SND HW_REGISTER_RW(ARM_SBM_OWN2+0x94)  */ /* DO NOT USE THIS !!!!! */
+#define ARM_2_MAIL0_STA  HW_REGISTER_RW(ARM_SBM_OWN2+0x98)   /* Status read */
+/*#define ARM_2_MAIL0_CNF HW_REGISTER_RW(ARM_SBM_OWN2+0x9C)  */ /* DO NOT USE THIS !!!!! */
+/* MAILBOX 1 access in Owner 2 area */
+/* Owner 2 should only WRITE to this mailbox */
+#define ARM_2_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN2+0xA0)   /* .. 0xAC (4 locations) */
+/*#define ARM_2_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN2+0xA0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN2+0xB0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_2_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN2+0xB4) */ /* DO NOT USE THIS !!!!! */
+#define ARM_2_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN2+0xB8)   /* Status read */
+/*#define ARM_2_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN2+0xBC) */ /* DO NOT USE THIS !!!!! */
+/* General SEM, BELL, MAIL config/status */
+#define ARM_2_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN2+0xE0)  /* semaphore clear/debug register */
+#define ARM_2_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN2+0xE4)  /* Doorbells clear/debug register */
+#define ARM_2_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN2+0xFC)  /* IRQS pending for owner 2 */
+#define ARM_2_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN2+0xF8)  /* ALL interrupts */
+
+/* Semaphores, Doorbells, Mailboxes Owner 3 */
+#define ARM_3_SEMS       HW_REGISTER_RW(ARM_SBM_OWN3+0x00)
+#define ARM_3_SEM0       HW_REGISTER_RW(ARM_SBM_OWN3+0x00)
+#define ARM_3_SEM1       HW_REGISTER_RW(ARM_SBM_OWN3+0x04)
+#define ARM_3_SEM2       HW_REGISTER_RW(ARM_SBM_OWN3+0x08)
+#define ARM_3_SEM3       HW_REGISTER_RW(ARM_SBM_OWN3+0x0C)
+#define ARM_3_SEM4       HW_REGISTER_RW(ARM_SBM_OWN3+0x10)
+#define ARM_3_SEM5       HW_REGISTER_RW(ARM_SBM_OWN3+0x14)
+#define ARM_3_SEM6       HW_REGISTER_RW(ARM_SBM_OWN3+0x18)
+#define ARM_3_SEM7       HW_REGISTER_RW(ARM_SBM_OWN3+0x1C)
+#define ARM_3_BELL0      HW_REGISTER_RW(ARM_SBM_OWN3+0x40)
+#define ARM_3_BELL1      HW_REGISTER_RW(ARM_SBM_OWN3+0x44)
+#define ARM_3_BELL2      HW_REGISTER_RW(ARM_SBM_OWN3+0x48)
+#define ARM_3_BELL3      HW_REGISTER_RW(ARM_SBM_OWN3+0x4C)
+/* MAILBOX 0 access in Owner 3 area */
+/* Owner 3 should only WRITE to this mailbox */
+#define ARM_3_MAIL0_WRT  HW_REGISTER_RW(ARM_SBM_OWN3+0x80)   /* .. 0x8C (4 locations) */
+/*#define ARM_3_MAIL0_RD  HW_REGISTER_RW(ARM_SBM_OWN3+0x80)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL0_POL HW_REGISTER_RW(ARM_SBM_OWN3+0x90)  */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL0_SND HW_REGISTER_RW(ARM_SBM_OWN3+0x94)  */ /* DO NOT USE THIS !!!!! */
+#define ARM_3_MAIL0_STA HW_REGISTER_RW(ARM_SBM_OWN3+0x98)    /* Status read */
+/*#define ARM_3_MAIL0_CNF HW_REGISTER_RW(ARM_SBM_OWN3+0x9C)  */ /* DO NOT USE THIS !!!!! */
+/* MAILBOX 1 access in Owner 3 area */
+/* Owner 3 should only WRITE to this mailbox */
+#define ARM_3_MAIL1_WRT  HW_REGISTER_RW(ARM_SBM_OWN3+0xA0)   /* .. 0xAC (4 locations) */
+/*#define ARM_3_MAIL1_RD   HW_REGISTER_RW(ARM_SBM_OWN3+0xA0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL1_POL  HW_REGISTER_RW(ARM_SBM_OWN3+0xB0) */ /* DO NOT USE THIS !!!!! */
+/*#define ARM_3_MAIL1_SND  HW_REGISTER_RW(ARM_SBM_OWN3+0xB4) */ /* DO NOT USE THIS !!!!! */
+#define ARM_3_MAIL1_STA  HW_REGISTER_RW(ARM_SBM_OWN3+0xB8)   /* Status read */
+/*#define ARM_3_MAIL1_CNF  HW_REGISTER_RW(ARM_SBM_OWN3+0xBC) */ /* DO NOT USE THIS !!!!! */
+/* General SEM, BELL, MAIL config/status */
+#define ARM_3_SEMCLRDBG   HW_REGISTER_RW(ARM_SBM_OWN3+0xE0)  /* semaphore clear/debug register */
+#define ARM_3_BELLCLRDBG  HW_REGISTER_RW(ARM_SBM_OWN3+0xE4)  /* Doorbells clear/debug register */
+#define ARM_3_MY_IRQS     HW_REGISTER_RW(ARM_SBM_OWN3+0xFC)  /* IRQS pending for owner 3 */
+#define ARM_3_ALL_IRQS    HW_REGISTER_RW(ARM_SBM_OWN3+0xF8)  /* ALL interrupts */
+
+
+
+/*  Mailbox flags. Valid for all owners */
+
+/* Mailbox status register (...0x98) */
+#define ARM_MS_FULL       0x80000000
+#define ARM_MS_EMPTY      0x40000000
+#define ARM_MS_LEVEL      0x400000FF /* Max. value depdnds on mailbox depth parameter */
+
+/* MAILBOX config/status register (...0x9C) */
+/* ANY write to this register clears the error bits! */
+#define ARM_MC_IHAVEDATAIRQEN    0x00000001 /* mailbox irq enable:  has data */
+#define ARM_MC_IHAVESPACEIRQEN   0x00000002 /* mailbox irq enable:  has space */
+#define ARM_MC_OPPISEMPTYIRQEN   0x00000004 /* mailbox irq enable: Opp. is empty */
+#define ARM_MC_MAIL_CLEAR        0x00000008 /* mailbox clear write 1, then  0 */
+#define ARM_MC_IHAVEDATAIRQPEND  0x00000010 /* mailbox irq pending:  has space */
+#define ARM_MC_IHAVESPACEIRQPEND 0x00000020 /* mailbox irq pending: Opp. is empty */
+#define ARM_MC_OPPISEMPTYIRQPEND 0x00000040 /* mailbox irq pending */
+/* Bit 7 is unused */
+#define ARM_MC_ERRNOOWN   0x00000100 /* error : none owner read from mailbox */
+#define ARM_MC_ERROVERFLW 0x00000200 /* error : write to fill mailbox */
+#define ARM_MC_ERRUNDRFLW 0x00000400 /* error : read from empty mailbox */
+
+/* Semaphore clear/debug register (...0xE0) */
+#define ARM_SD_OWN0      0x00000003  /* Owner of sem 0 */
+#define ARM_SD_OWN1      0x0000000C  /* Owner of sem 1 */
+#define ARM_SD_OWN2      0x00000030  /* Owner of sem 2 */
+#define ARM_SD_OWN3      0x000000C0  /* Owner of sem 3 */
+#define ARM_SD_OWN4      0x00000300  /* Owner of sem 4 */
+#define ARM_SD_OWN5      0x00000C00  /* Owner of sem 5 */
+#define ARM_SD_OWN6      0x00003000  /* Owner of sem 6 */
+#define ARM_SD_OWN7      0x0000C000  /* Owner of sem 7 */
+#define ARM_SD_SEM0      0x00010000  /* Status of sem 0 */
+#define ARM_SD_SEM1      0x00020000  /* Status of sem 1 */
+#define ARM_SD_SEM2      0x00040000  /* Status of sem 2 */
+#define ARM_SD_SEM3      0x00080000  /* Status of sem 3 */
+#define ARM_SD_SEM4      0x00100000  /* Status of sem 4 */
+#define ARM_SD_SEM5      0x00200000  /* Status of sem 5 */
+#define ARM_SD_SEM6      0x00400000  /* Status of sem 6 */
+#define ARM_SD_SEM7      0x00800000  /* Status of sem 7 */
+
+/* Doorbells clear/debug register (...0xE4) */
+#define ARM_BD_OWN0      0x00000003  /* Owner of doorbell 0 */
+#define ARM_BD_OWN1      0x0000000C  /* Owner of doorbell 1 */
+#define ARM_BD_OWN2      0x00000030  /* Owner of doorbell 2 */
+#define ARM_BD_OWN3      0x000000C0  /* Owner of doorbell 3 */
+#define ARM_BD_BELL0     0x00000100  /* Status of doorbell 0 */
+#define ARM_BD_BELL1     0x00000200  /* Status of doorbell 1 */
+#define ARM_BD_BELL2     0x00000400  /* Status of doorbell 2 */
+#define ARM_BD_BELL3     0x00000800  /* Status of doorbell 3 */
+
+/* MY IRQS register (...0xF8) */
+#define ARM_MYIRQ_BELL   0x00000001  /* This owner has a doorbell IRQ */
+#define ARM_MYIRQ_MAIL   0x00000002  /* This owner has a mailbox  IRQ */
+
+/* ALL IRQS register (...0xF8) */
+#define ARM_AIS_BELL0 0x00000001  /* Doorbell 0 IRQ pending */
+#define ARM_AIS_BELL1 0x00000002  /* Doorbell 1 IRQ pending */
+#define ARM_AIS_BELL2 0x00000004  /* Doorbell 2 IRQ pending */
+#define ARM_AIS_BELL3 0x00000008  /* Doorbell 3 IRQ pending */
+#define ARM_AIS0_HAVEDATA 0x00000010  /* MAIL 0 has data IRQ pending */
+#define ARM_AIS0_HAVESPAC 0x00000020  /* MAIL 0 has space IRQ pending */
+#define ARM_AIS0_OPPEMPTY 0x00000040  /* MAIL 0 opposite is empty IRQ */
+#define ARM_AIS1_HAVEDATA 0x00000080  /* MAIL 1 has data IRQ pending */
+#define ARM_AIS1_HAVESPAC 0x00000100  /* MAIL 1 has space IRQ pending */
+#define ARM_AIS1_OPPEMPTY 0x00000200  /* MAIL 1 opposite is empty IRQ */
+/* Note   that bell-0, bell-1 and MAIL0 IRQ go only to the ARM */
+/* Whilst that bell-2, bell-3 and MAIL1 IRQ go only to the VC */
+/* */
+/* ARM JTAG BASH */
+/* */
+#define AJB_BASE 0x7e2000c0
+
+#define AJBCONF HW_REGISTER_RW(AJB_BASE+0x00)
+#define   AJB_BITS0    0x000000
+#define   AJB_BITS4    0x000004
+#define   AJB_BITS8    0x000008
+#define   AJB_BITS12   0x00000C
+#define   AJB_BITS16   0x000010
+#define   AJB_BITS20   0x000014
+#define   AJB_BITS24   0x000018
+#define   AJB_BITS28   0x00001C
+#define   AJB_BITS32   0x000020
+#define   AJB_BITS34   0x000022
+#define   AJB_OUT_MS   0x000040
+#define   AJB_OUT_LS   0x000000
+#define   AJB_INV_CLK  0x000080
+#define   AJB_D0_RISE  0x000100
+#define   AJB_D0_FALL  0x000000
+#define   AJB_D1_RISE  0x000200
+#define   AJB_D1_FALL  0x000000
+#define   AJB_IN_RISE  0x000400
+#define   AJB_IN_FALL  0x000000
+#define   AJB_ENABLE   0x000800
+#define   AJB_HOLD0    0x000000
+#define   AJB_HOLD1    0x001000
+#define   AJB_HOLD2    0x002000
+#define   AJB_HOLD3    0x003000
+#define   AJB_RESETN   0x004000
+#define   AJB_CLKSHFT  16
+#define   AJB_BUSY     0x80000000
+#define AJBTMS HW_REGISTER_RW(AJB_BASE+0x04)
+#define AJBTDI HW_REGISTER_RW(AJB_BASE+0x08)
+#define AJBTDO HW_REGISTER_RW(AJB_BASE+0x0c)
+
+#define ARM_LOCAL_BASE 0x40000000
+#define ARM_LOCAL_CONTROL		HW_REGISTER_RW(ARM_LOCAL_BASE+0x000)
+#define ARM_LOCAL_PRESCALER		HW_REGISTER_RW(ARM_LOCAL_BASE+0x008)
+#define ARM_LOCAL_GPU_INT_ROUTING	HW_REGISTER_RW(ARM_LOCAL_BASE+0x00C)
+#define ARM_LOCAL_PM_ROUTING_SET	HW_REGISTER_RW(ARM_LOCAL_BASE+0x010)
+#define ARM_LOCAL_PM_ROUTING_CLR	HW_REGISTER_RW(ARM_LOCAL_BASE+0x014)
+#define ARM_LOCAL_TIMER_LS		HW_REGISTER_RW(ARM_LOCAL_BASE+0x01C)
+#define ARM_LOCAL_TIMER_MS		HW_REGISTER_RW(ARM_LOCAL_BASE+0x020)
+#define ARM_LOCAL_INT_ROUTING		HW_REGISTER_RW(ARM_LOCAL_BASE+0x024)
+#define ARM_LOCAL_AXI_COUNT		HW_REGISTER_RW(ARM_LOCAL_BASE+0x02C)
+#define ARM_LOCAL_AXI_IRQ		HW_REGISTER_RW(ARM_LOCAL_BASE+0x030)
+#define ARM_LOCAL_TIMER_CONTROL		HW_REGISTER_RW(ARM_LOCAL_BASE+0x034)
+#define ARM_LOCAL_TIMER_WRITE		HW_REGISTER_RW(ARM_LOCAL_BASE+0x038)
+
+#define ARM_LOCAL_TIMER_INT_CONTROL0	HW_REGISTER_RW(ARM_LOCAL_BASE+0x040)
+#define ARM_LOCAL_TIMER_INT_CONTROL1	HW_REGISTER_RW(ARM_LOCAL_BASE+0x044)
+#define ARM_LOCAL_TIMER_INT_CONTROL2	HW_REGISTER_RW(ARM_LOCAL_BASE+0x048)
+#define ARM_LOCAL_TIMER_INT_CONTROL3	HW_REGISTER_RW(ARM_LOCAL_BASE+0x04C)
+
+#define ARM_LOCAL_MAILBOX_INT_CONTROL0	HW_REGISTER_RW(ARM_LOCAL_BASE+0x050)
+#define ARM_LOCAL_MAILBOX_INT_CONTROL1	HW_REGISTER_RW(ARM_LOCAL_BASE+0x054)
+#define ARM_LOCAL_MAILBOX_INT_CONTROL2	HW_REGISTER_RW(ARM_LOCAL_BASE+0x058)
+#define ARM_LOCAL_MAILBOX_INT_CONTROL3	HW_REGISTER_RW(ARM_LOCAL_BASE+0x05C)
+
+#define ARM_LOCAL_IRQ_PENDING0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x060)
+#define ARM_LOCAL_IRQ_PENDING1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x064)
+#define ARM_LOCAL_IRQ_PENDING2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x068)
+#define ARM_LOCAL_IRQ_PENDING3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x06C)
+
+#define ARM_LOCAL_FIQ_PENDING0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x070)
+#define ARM_LOCAL_FIQ_PENDING1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x074)
+#define ARM_LOCAL_FIQ_PENDING2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x078)
+#define ARM_LOCAL_FIQ_PENDING3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x07C)
+
+#define ARM_LOCAL_MAILBOX0_SET0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x080)
+#define ARM_LOCAL_MAILBOX1_SET0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x084)
+#define ARM_LOCAL_MAILBOX2_SET0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x088)
+#define ARM_LOCAL_MAILBOX3_SET0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x08C)
+
+#define ARM_LOCAL_MAILBOX0_SET1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x090)
+#define ARM_LOCAL_MAILBOX1_SET1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x094)
+#define ARM_LOCAL_MAILBOX2_SET1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x098)
+#define ARM_LOCAL_MAILBOX3_SET1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x09C)
+
+#define ARM_LOCAL_MAILBOX0_SET2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0A0)
+#define ARM_LOCAL_MAILBOX1_SET2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0A4)
+#define ARM_LOCAL_MAILBOX2_SET2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0A8)
+#define ARM_LOCAL_MAILBOX3_SET2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0AC)
+
+#define ARM_LOCAL_MAILBOX0_SET3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0B0)
+#define ARM_LOCAL_MAILBOX1_SET3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0B4)
+#define ARM_LOCAL_MAILBOX2_SET3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0B8)
+#define ARM_LOCAL_MAILBOX3_SET3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0BC)
+
+#define ARM_LOCAL_MAILBOX0_CLR0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0C0)
+#define ARM_LOCAL_MAILBOX1_CLR0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0C4)
+#define ARM_LOCAL_MAILBOX2_CLR0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0C8)
+#define ARM_LOCAL_MAILBOX3_CLR0		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0CC)
+
+#define ARM_LOCAL_MAILBOX0_CLR1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0D0)
+#define ARM_LOCAL_MAILBOX1_CLR1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0D4)
+#define ARM_LOCAL_MAILBOX2_CLR1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0D8)
+#define ARM_LOCAL_MAILBOX3_CLR1		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0DC)
+
+#define ARM_LOCAL_MAILBOX0_CLR2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0E0)
+#define ARM_LOCAL_MAILBOX1_CLR2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0E4)
+#define ARM_LOCAL_MAILBOX2_CLR2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0E8)
+#define ARM_LOCAL_MAILBOX3_CLR2		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0EC)
+
+#define ARM_LOCAL_MAILBOX0_CLR3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0F0)
+#define ARM_LOCAL_MAILBOX1_CLR3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0F4)
+#define ARM_LOCAL_MAILBOX2_CLR3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0F8)
+#define ARM_LOCAL_MAILBOX3_CLR3		HW_REGISTER_RW(ARM_LOCAL_BASE+0x0FC)
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/arm_power.h linux-rpi/arch/arm/mach-bcm2709/include/mach/arm_power.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/arm_power.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/arm_power.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,62 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/include/mach/arm_power.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _ARM_POWER_H
+#define _ARM_POWER_H
+
+/* Use meaningful names on each side */
+#ifdef __VIDEOCORE__
+#define PREFIX(x) ARM_##x
+#else
+#define PREFIX(x) BCM_##x
+#endif
+
+enum {
+	PREFIX(POWER_SDCARD_BIT),
+	PREFIX(POWER_UART_BIT),
+	PREFIX(POWER_MINIUART_BIT),
+	PREFIX(POWER_USB_BIT),
+	PREFIX(POWER_I2C0_BIT),
+	PREFIX(POWER_I2C1_BIT),
+	PREFIX(POWER_I2C2_BIT),
+	PREFIX(POWER_SPI_BIT),
+	PREFIX(POWER_CCP2TX_BIT),
+	PREFIX(POWER_DSI_BIT),
+
+	PREFIX(POWER_MAX)
+};
+
+enum {
+	PREFIX(POWER_SDCARD) = (1 << PREFIX(POWER_SDCARD_BIT)),
+	PREFIX(POWER_UART) = (1 << PREFIX(POWER_UART_BIT)),
+	PREFIX(POWER_MINIUART) = (1 << PREFIX(POWER_MINIUART_BIT)),
+	PREFIX(POWER_USB) = (1 << PREFIX(POWER_USB_BIT)),
+	PREFIX(POWER_I2C0) = (1 << PREFIX(POWER_I2C0_BIT)),
+	PREFIX(POWER_I2C1_MASK) = (1 << PREFIX(POWER_I2C1_BIT)),
+	PREFIX(POWER_I2C2_MASK) = (1 << PREFIX(POWER_I2C2_BIT)),
+	PREFIX(POWER_SPI_MASK) = (1 << PREFIX(POWER_SPI_BIT)),
+	PREFIX(POWER_CCP2TX_MASK) = (1 << PREFIX(POWER_CCP2TX_BIT)),
+	PREFIX(POWER_DSI) = (1 << PREFIX(POWER_DSI_BIT)),
+
+	PREFIX(POWER_MASK) = (1 << PREFIX(POWER_MAX)) - 1,
+	PREFIX(POWER_NONE) = 0
+};
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/barriers.h linux-rpi/arch/arm/mach-bcm2709/include/mach/barriers.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/barriers.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/barriers.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,3 @@
+#define mb()		dsb()
+#define rmb()		dsb()
+#define wmb()		mb()
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/clkdev.h linux-rpi/arch/arm/mach-bcm2709/include/mach/clkdev.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/clkdev.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/clkdev.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,7 @@
+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/debug-macro.S linux-rpi/arch/arm/mach-bcm2709/include/mach/debug-macro.S
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/debug-macro.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/debug-macro.S	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,22 @@
+/* arch/arm/mach-bcm2708/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 1994-1999 Russell King
+ *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+*/
+
+#include <mach/platform.h>
+
+		.macro	addruart, rp, rv, tmp
+		ldr	\rp, =UART0_BASE
+		ldr	\rv, =IO_ADDRESS(UART0_BASE)
+		.endm
+
+#include <debug/pl01x.S>
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/dma.h linux-rpi/arch/arm/mach-bcm2709/include/mach/dma.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/dma.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/dma.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,94 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/include/mach/dma.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+
+#ifndef _MACH_BCM2708_DMA_H
+#define _MACH_BCM2708_DMA_H
+
+#define BCM_DMAMAN_DRIVER_NAME "bcm2708_dma"
+
+/* DMA CS Control and Status bits */
+#define BCM2708_DMA_ACTIVE	(1 << 0)
+#define BCM2708_DMA_INT		(1 << 2)
+#define BCM2708_DMA_ISPAUSED	(1 << 4)  /* Pause requested or not active */
+#define BCM2708_DMA_ISHELD	(1 << 5)  /* Is held by DREQ flow control */
+#define BCM2708_DMA_ERR		(1 << 8)
+#define BCM2708_DMA_ABORT	(1 << 30) /* stop current CB, go to next, WO */
+#define BCM2708_DMA_RESET	(1 << 31) /* WO, self clearing */
+
+/* DMA control block "info" field bits */
+#define BCM2708_DMA_INT_EN	(1 << 0)
+#define BCM2708_DMA_TDMODE	(1 << 1)
+#define BCM2708_DMA_WAIT_RESP	(1 << 3)
+#define BCM2708_DMA_D_INC	(1 << 4)
+#define BCM2708_DMA_D_WIDTH	(1 << 5)
+#define BCM2708_DMA_D_DREQ	(1 << 6)
+#define BCM2708_DMA_S_INC	(1 << 8)
+#define BCM2708_DMA_S_WIDTH	(1 << 9)
+#define BCM2708_DMA_S_DREQ	(1 << 10)
+
+#define	BCM2708_DMA_BURST(x)	(((x)&0xf) << 12)
+#define	BCM2708_DMA_PER_MAP(x)	((x) << 16)
+#define	BCM2708_DMA_WAITS(x)	(((x)&0x1f) << 21)
+
+#define BCM2708_DMA_DREQ_EMMC	11
+#define BCM2708_DMA_DREQ_SDHOST	13
+
+#define BCM2708_DMA_CS		0x00 /* Control and Status */
+#define BCM2708_DMA_ADDR	0x04
+/* the current control block appears in the following registers - read only */
+#define BCM2708_DMA_INFO	0x08
+#define BCM2708_DMA_SOURCE_AD	0x0c
+#define BCM2708_DMA_DEST_AD	0x10
+#define BCM2708_DMA_NEXTCB	0x1C
+#define BCM2708_DMA_DEBUG	0x20
+
+#define BCM2708_DMA4_CS		(BCM2708_DMA_CHAN(4)+BCM2708_DMA_CS)
+#define BCM2708_DMA4_ADDR	(BCM2708_DMA_CHAN(4)+BCM2708_DMA_ADDR)
+
+#define BCM2708_DMA_TDMODE_LEN(w, h) ((h) << 16 | (w))
+
+struct bcm2708_dma_cb {
+	unsigned long info;
+	unsigned long src;
+	unsigned long dst;
+	unsigned long length;
+	unsigned long stride;
+	unsigned long next;
+	unsigned long pad[2];
+};
+struct scatterlist;
+
+extern int bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len);
+extern void bcm_dma_start(void __iomem *dma_chan_base,
+			  dma_addr_t control_block);
+extern void bcm_dma_wait_idle(void __iomem *dma_chan_base);
+extern bool bcm_dma_is_busy(void __iomem *dma_chan_base);
+extern int /*rc*/ bcm_dma_abort(void __iomem *dma_chan_base);
+
+/* When listing features we can ask for when allocating DMA channels give
+   those with higher priority smaller ordinal numbers */
+#define BCM_DMA_FEATURE_FAST_ORD 0
+#define BCM_DMA_FEATURE_BULK_ORD 1
+#define BCM_DMA_FEATURE_NORMAL_ORD 2
+#define BCM_DMA_FEATURE_LITE_ORD 3
+#define BCM_DMA_FEATURE_FAST	 (1<<BCM_DMA_FEATURE_FAST_ORD)
+#define BCM_DMA_FEATURE_BULK	 (1<<BCM_DMA_FEATURE_BULK_ORD)
+#define BCM_DMA_FEATURE_NORMAL	 (1<<BCM_DMA_FEATURE_NORMAL_ORD)
+#define BCM_DMA_FEATURE_LITE	 (1<<BCM_DMA_FEATURE_LITE_ORD)
+#define BCM_DMA_FEATURE_COUNT	 4
+
+/* return channel no or -ve error */
+extern int bcm_dma_chan_alloc(unsigned preferred_feature_set,
+			      void __iomem **out_dma_base, int *out_dma_irq);
+extern int bcm_dma_chan_free(int channel);
+
+
+#endif /* _MACH_BCM2708_DMA_H */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/entry-macro.S linux-rpi/arch/arm/mach-bcm2709/include/mach/entry-macro.S
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/entry-macro.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/entry-macro.S	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,120 @@
+/*
+ * arch/arm/mach-bcm2708/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for BCM2708 platforms
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+
+	.macro  arch_ret_to_user, tmp1, tmp2
+	.endm
+
+	.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+	/* get core number */
+	mrc     p15, 0, \base, c0, c0, 5
+	ubfx    \base, \base, #0, #2
+
+	/* get core's local interrupt controller */
+	ldr	\irqstat, = __io_address(ARM_LOCAL_IRQ_PENDING0)	@ local interrupt source
+	add	\irqstat, \irqstat, \base, lsl #2
+	ldr	\tmp, [\irqstat]
+
+	/* test for mailbox0 (IPI) interrupt */
+	tst	\tmp, #0x10
+	beq	1030f
+
+	/* get core's mailbox interrupt control */
+	ldr	\irqstat, = __io_address(ARM_LOCAL_MAILBOX0_CLR0)	@ mbox_clr
+	add	\irqstat, \irqstat, \base, lsl #4
+	ldr	\tmp, [\irqstat]
+	clz	\tmp, \tmp
+	rsb	\irqnr, \tmp, #31
+	mov	\tmp, #1
+	lsl	\tmp, \irqnr
+	str	\tmp, [\irqstat]  @ clear interrupt source
+	dsb
+	mov	r1, sp
+	adr	lr, BSYM(1b)
+	b	do_IPI
+
+1030:
+	/* check gpu interrupt */
+	tst	\tmp, #0x100
+	beq	1040f
+
+	ldr	\base, =IO_ADDRESS(ARMCTRL_IC_BASE)
+	/* get masked status */
+	ldr	\irqstat, [\base, #(ARM_IRQ_PEND0 - ARMCTRL_IC_BASE)]
+	mov	\irqnr, #(ARM_IRQ0_BASE + 31)
+	and	\tmp, \irqstat, #0x300		 @ save bits 8 and 9
+	/* clear bits 8 and 9, and test */
+	bics	\irqstat, \irqstat, #0x300
+	bne	1010f
+
+	tst	\tmp, #0x100
+	ldrne	\irqstat, [\base, #(ARM_IRQ_PEND1 - ARMCTRL_IC_BASE)]
+	movne	\irqnr, #(ARM_IRQ1_BASE + 31)
+	@ Mask out the interrupts also present in PEND0 - see SW-5809
+	bicne	\irqstat, #((1<<7) | (1<<9) | (1<<10))
+	bicne	\irqstat, #((1<<18) | (1<<19))
+	bne	1010f
+
+	tst	\tmp, #0x200
+	ldrne	\irqstat, [\base, #(ARM_IRQ_PEND2 - ARMCTRL_IC_BASE)]
+	movne	\irqnr, #(ARM_IRQ2_BASE + 31)
+	@ Mask out the interrupts also present in PEND0 - see SW-5809
+	bicne	\irqstat, #((1<<21) | (1<<22) | (1<<23) | (1<<24) | (1<<25))
+	bicne	\irqstat, #((1<<30))
+	beq	1020f
+1010:
+	@ For non-zero x, LSB(x) = 31 - CLZ(x^(x-1))
+	sub	\tmp, \irqstat, #1
+	eor	\irqstat, \irqstat, \tmp
+	clz	\tmp, \irqstat
+	sub	\irqnr, \tmp
+	b	1050f
+1040:
+	cmp	\tmp, #0
+	beq	1020f
+
+	/* handle local (e.g. timer) interrupts */
+	@ For non-zero x, LSB(x) = 31 - CLZ(x^(x-1))
+	mov	\irqnr, #(ARM_IRQ_LOCAL_BASE + 31)
+	sub	\irqstat, \tmp, #1
+	eor	\irqstat, \irqstat, \tmp
+	clz	\tmp, \irqstat
+	sub	\irqnr, \tmp
+1050:
+	mov	r1, sp
+	@
+	@ routine called with r0 = irq number, r1 = struct pt_regs *
+	@
+	adr	lr, BSYM(1b)
+	b	asm_do_IRQ
+
+1020:	@ EQ will be set if no irqs pending
+	.endm
+
+/*
+ * Interrupt handling.  Preserves r7, r8, r9
+ */
+	.macro	arch_irq_handler_default
+1:	get_irqnr_and_base r0, r2, r6, lr
+	.endm
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/frc.h linux-rpi/arch/arm/mach-bcm2709/include/mach/frc.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/frc.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/frc.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,38 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/timex.h
+ *
+ *  BCM2708 free running counter (timer)
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _MACH_FRC_H
+#define _MACH_FRC_H
+
+#define FRC_TICK_RATE		(1000000)
+
+/*! Free running counter incrementing at the CLOCK_TICK_RATE
+    (slightly faster than frc_clock_ticks63()
+ */
+extern unsigned long frc_clock_ticks32(void);
+
+/*! Free running counter incrementing at the CLOCK_TICK_RATE
+ *  Note - top bit should be ignored (see cnt32_to_63)
+ */
+extern unsigned long long frc_clock_ticks63(void);
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/gpio.h linux-rpi/arch/arm/mach-bcm2709/include/mach/gpio.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/gpio.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/gpio.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,17 @@
+/*
+ * arch/arm/mach-bcm2708/include/mach/gpio.h
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+#define BCM2708_NR_GPIOS 54 // number of gpio lines
+
+#define gpio_to_irq(x)	((x) + GPIO_IRQ_START)
+#define irq_to_gpio(x)	((x) - GPIO_IRQ_START)
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/hardware.h linux-rpi/arch/arm/mach-bcm2709/include/mach/hardware.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/hardware.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/hardware.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,28 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/hardware.h
+ *
+ *  This file contains the hardware definitions of the BCM2708 devices.
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include <asm/sizes.h>
+#include <mach/platform.h>
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/io.h linux-rpi/arch/arm/mach-bcm2709/include/mach/io.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/io.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/io.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,27 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/io.h
+ *
+ *  Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define __io(a)		__typesafe_io(a)
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/irqs.h linux-rpi/arch/arm/mach-bcm2709/include/mach/irqs.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/irqs.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/irqs.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,225 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/irqs.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 2003 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _BCM2708_IRQS_H_
+#define _BCM2708_IRQS_H_
+
+#include <mach/platform.h>
+
+/*
+ *  IRQ interrupts definitions are the same as the INT definitions
+ *  held within platform.h
+ */
+#define IRQ_ARMCTRL_START     0
+#define IRQ_TIMER0            (IRQ_ARMCTRL_START + INTERRUPT_TIMER0)
+#define IRQ_TIMER1            (IRQ_ARMCTRL_START + INTERRUPT_TIMER1)
+#define IRQ_TIMER2            (IRQ_ARMCTRL_START + INTERRUPT_TIMER2)
+#define IRQ_TIMER3            (IRQ_ARMCTRL_START + INTERRUPT_TIMER3)
+#define IRQ_CODEC0            (IRQ_ARMCTRL_START + INTERRUPT_CODEC0)
+#define IRQ_CODEC1            (IRQ_ARMCTRL_START + INTERRUPT_CODEC1)
+#define IRQ_CODEC2            (IRQ_ARMCTRL_START + INTERRUPT_CODEC2)
+#define IRQ_JPEG              (IRQ_ARMCTRL_START + INTERRUPT_JPEG)
+#define IRQ_ISP               (IRQ_ARMCTRL_START + INTERRUPT_ISP)
+#define IRQ_USB               (IRQ_ARMCTRL_START + INTERRUPT_USB)
+#define IRQ_3D                (IRQ_ARMCTRL_START + INTERRUPT_3D)
+#define IRQ_TRANSPOSER        (IRQ_ARMCTRL_START + INTERRUPT_TRANSPOSER)
+#define IRQ_MULTICORESYNC0    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC0)
+#define IRQ_MULTICORESYNC1    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC1)
+#define IRQ_MULTICORESYNC2    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC2)
+#define IRQ_MULTICORESYNC3    (IRQ_ARMCTRL_START + INTERRUPT_MULTICORESYNC3)
+#define IRQ_DMA0              (IRQ_ARMCTRL_START + INTERRUPT_DMA0)
+#define IRQ_DMA1              (IRQ_ARMCTRL_START + INTERRUPT_DMA1)
+#define IRQ_DMA2              (IRQ_ARMCTRL_START + INTERRUPT_DMA2)
+#define IRQ_DMA3              (IRQ_ARMCTRL_START + INTERRUPT_DMA3)
+#define IRQ_DMA4              (IRQ_ARMCTRL_START + INTERRUPT_DMA4)
+#define IRQ_DMA5              (IRQ_ARMCTRL_START + INTERRUPT_DMA5)
+#define IRQ_DMA6              (IRQ_ARMCTRL_START + INTERRUPT_DMA6)
+#define IRQ_DMA7              (IRQ_ARMCTRL_START + INTERRUPT_DMA7)
+#define IRQ_DMA8              (IRQ_ARMCTRL_START + INTERRUPT_DMA8)
+#define IRQ_DMA9              (IRQ_ARMCTRL_START + INTERRUPT_DMA9)
+#define IRQ_DMA10             (IRQ_ARMCTRL_START + INTERRUPT_DMA10)
+#define IRQ_DMA11             (IRQ_ARMCTRL_START + INTERRUPT_DMA11)
+#define IRQ_DMA12             (IRQ_ARMCTRL_START + INTERRUPT_DMA12)
+#define IRQ_AUX               (IRQ_ARMCTRL_START + INTERRUPT_AUX)
+#define IRQ_ARM               (IRQ_ARMCTRL_START + INTERRUPT_ARM)
+#define IRQ_VPUDMA            (IRQ_ARMCTRL_START + INTERRUPT_VPUDMA)
+#define IRQ_HOSTPORT          (IRQ_ARMCTRL_START + INTERRUPT_HOSTPORT)
+#define IRQ_VIDEOSCALER       (IRQ_ARMCTRL_START + INTERRUPT_VIDEOSCALER)
+#define IRQ_CCP2TX            (IRQ_ARMCTRL_START + INTERRUPT_CCP2TX)
+#define IRQ_SDC               (IRQ_ARMCTRL_START + INTERRUPT_SDC)
+#define IRQ_DSI0              (IRQ_ARMCTRL_START + INTERRUPT_DSI0)
+#define IRQ_AVE               (IRQ_ARMCTRL_START + INTERRUPT_AVE)
+#define IRQ_CAM0              (IRQ_ARMCTRL_START + INTERRUPT_CAM0)
+#define IRQ_CAM1              (IRQ_ARMCTRL_START + INTERRUPT_CAM1)
+#define IRQ_HDMI0             (IRQ_ARMCTRL_START + INTERRUPT_HDMI0)
+#define IRQ_HDMI1             (IRQ_ARMCTRL_START + INTERRUPT_HDMI1)
+#define IRQ_PIXELVALVE1       (IRQ_ARMCTRL_START + INTERRUPT_PIXELVALVE1)
+#define IRQ_I2CSPISLV         (IRQ_ARMCTRL_START + INTERRUPT_I2CSPISLV)
+#define IRQ_DSI1              (IRQ_ARMCTRL_START + INTERRUPT_DSI1)
+#define IRQ_PWA0              (IRQ_ARMCTRL_START + INTERRUPT_PWA0)
+#define IRQ_PWA1              (IRQ_ARMCTRL_START + INTERRUPT_PWA1)
+#define IRQ_CPR               (IRQ_ARMCTRL_START + INTERRUPT_CPR)
+#define IRQ_SMI               (IRQ_ARMCTRL_START + INTERRUPT_SMI)
+#define IRQ_GPIO0             (IRQ_ARMCTRL_START + INTERRUPT_GPIO0)
+#define IRQ_GPIO1             (IRQ_ARMCTRL_START + INTERRUPT_GPIO1)
+#define IRQ_GPIO2             (IRQ_ARMCTRL_START + INTERRUPT_GPIO2)
+#define IRQ_GPIO3             (IRQ_ARMCTRL_START + INTERRUPT_GPIO3)
+#define IRQ_I2C               (IRQ_ARMCTRL_START + INTERRUPT_I2C)
+#define IRQ_SPI               (IRQ_ARMCTRL_START + INTERRUPT_SPI)
+#define IRQ_I2SPCM            (IRQ_ARMCTRL_START + INTERRUPT_I2SPCM)
+#define IRQ_SDIO              (IRQ_ARMCTRL_START + INTERRUPT_SDIO)
+#define IRQ_UART              (IRQ_ARMCTRL_START + INTERRUPT_UART)
+#define IRQ_SLIMBUS           (IRQ_ARMCTRL_START + INTERRUPT_SLIMBUS)
+#define IRQ_VEC               (IRQ_ARMCTRL_START + INTERRUPT_VEC)
+#define IRQ_CPG               (IRQ_ARMCTRL_START + INTERRUPT_CPG)
+#define IRQ_RNG               (IRQ_ARMCTRL_START + INTERRUPT_RNG)
+#define IRQ_ARASANSDIO        (IRQ_ARMCTRL_START + INTERRUPT_ARASANSDIO)
+#define IRQ_AVSPMON           (IRQ_ARMCTRL_START + INTERRUPT_AVSPMON)
+
+#define IRQ_ARM_TIMER         (IRQ_ARMCTRL_START + INTERRUPT_ARM_TIMER)
+#define IRQ_ARM_MAILBOX       (IRQ_ARMCTRL_START + INTERRUPT_ARM_MAILBOX)
+#define IRQ_ARM_DOORBELL_0    (IRQ_ARMCTRL_START + INTERRUPT_ARM_DOORBELL_0)
+#define IRQ_ARM_DOORBELL_1    (IRQ_ARMCTRL_START + INTERRUPT_ARM_DOORBELL_1)
+#define IRQ_VPU0_HALTED       (IRQ_ARMCTRL_START + INTERRUPT_VPU0_HALTED)
+#define IRQ_VPU1_HALTED       (IRQ_ARMCTRL_START + INTERRUPT_VPU1_HALTED)
+#define IRQ_ILLEGAL_TYPE0     (IRQ_ARMCTRL_START + INTERRUPT_ILLEGAL_TYPE0)
+#define IRQ_ILLEGAL_TYPE1     (IRQ_ARMCTRL_START + INTERRUPT_ILLEGAL_TYPE1)
+#define IRQ_PENDING1          (IRQ_ARMCTRL_START + INTERRUPT_PENDING1)
+#define IRQ_PENDING2          (IRQ_ARMCTRL_START + INTERRUPT_PENDING2)
+
+#define IRQ_ARM_LOCAL_CNTPSIRQ   (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_CNTPSIRQ)
+#define IRQ_ARM_LOCAL_CNTPNSIRQ  (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_CNTPNSIRQ)
+#define IRQ_ARM_LOCAL_CNTHPIRQ   (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_CNTHPIRQ)
+#define IRQ_ARM_LOCAL_CNTVIRQ    (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_CNTVIRQ)
+#define IRQ_ARM_LOCAL_MAILBOX0   (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_MAILBOX0)
+#define IRQ_ARM_LOCAL_MAILBOX1   (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_MAILBOX1)
+#define IRQ_ARM_LOCAL_MAILBOX2   (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_MAILBOX2)
+#define IRQ_ARM_LOCAL_MAILBOX3   (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_MAILBOX3)
+#define IRQ_ARM_LOCAL_GPU_FAST   (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_GPU_FAST)
+#define IRQ_ARM_LOCAL_PMU_FAST   (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_PMU_FAST)
+#define IRQ_ARM_LOCAL_ZERO       (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_ZERO)
+#define IRQ_ARM_LOCAL_TIMER      (IRQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_TIMER)
+
+#define FIQ_START             HARD_IRQS
+
+/*
+ *  FIQ interrupts definitions are the same as the INT definitions.
+ */
+#define FIQ_TIMER0            (FIQ_START+INTERRUPT_TIMER0)
+#define FIQ_TIMER1            (FIQ_START+INTERRUPT_TIMER1)
+#define FIQ_TIMER2            (FIQ_START+INTERRUPT_TIMER2)
+#define FIQ_TIMER3            (FIQ_START+INTERRUPT_TIMER3)
+#define FIQ_CODEC0            (FIQ_START+INTERRUPT_CODEC0)
+#define FIQ_CODEC1            (FIQ_START+INTERRUPT_CODEC1)
+#define FIQ_CODEC2            (FIQ_START+INTERRUPT_CODEC2)
+#define FIQ_JPEG              (FIQ_START+INTERRUPT_JPEG)
+#define FIQ_ISP               (FIQ_START+INTERRUPT_ISP)
+#define FIQ_USB               (FIQ_START+INTERRUPT_USB)
+#define FIQ_3D                (FIQ_START+INTERRUPT_3D)
+#define FIQ_TRANSPOSER        (FIQ_START+INTERRUPT_TRANSPOSER)
+#define FIQ_MULTICORESYNC0    (FIQ_START+INTERRUPT_MULTICORESYNC0)
+#define FIQ_MULTICORESYNC1    (FIQ_START+INTERRUPT_MULTICORESYNC1)
+#define FIQ_MULTICORESYNC2    (FIQ_START+INTERRUPT_MULTICORESYNC2)
+#define FIQ_MULTICORESYNC3    (FIQ_START+INTERRUPT_MULTICORESYNC3)
+#define FIQ_DMA0              (FIQ_START+INTERRUPT_DMA0)
+#define FIQ_DMA1              (FIQ_START+INTERRUPT_DMA1)
+#define FIQ_DMA2              (FIQ_START+INTERRUPT_DMA2)
+#define FIQ_DMA3              (FIQ_START+INTERRUPT_DMA3)
+#define FIQ_DMA4              (FIQ_START+INTERRUPT_DMA4)
+#define FIQ_DMA5              (FIQ_START+INTERRUPT_DMA5)
+#define FIQ_DMA6              (FIQ_START+INTERRUPT_DMA6)
+#define FIQ_DMA7              (FIQ_START+INTERRUPT_DMA7)
+#define FIQ_DMA8              (FIQ_START+INTERRUPT_DMA8)
+#define FIQ_DMA9              (FIQ_START+INTERRUPT_DMA9)
+#define FIQ_DMA10             (FIQ_START+INTERRUPT_DMA10)
+#define FIQ_DMA11             (FIQ_START+INTERRUPT_DMA11)
+#define FIQ_DMA12             (FIQ_START+INTERRUPT_DMA12)
+#define FIQ_AUX               (FIQ_START+INTERRUPT_AUX)
+#define FIQ_ARM               (FIQ_START+INTERRUPT_ARM)
+#define FIQ_VPUDMA            (FIQ_START+INTERRUPT_VPUDMA)
+#define FIQ_HOSTPORT          (FIQ_START+INTERRUPT_HOSTPORT)
+#define FIQ_VIDEOSCALER       (FIQ_START+INTERRUPT_VIDEOSCALER)
+#define FIQ_CCP2TX            (FIQ_START+INTERRUPT_CCP2TX)
+#define FIQ_SDC               (FIQ_START+INTERRUPT_SDC)
+#define FIQ_DSI0              (FIQ_START+INTERRUPT_DSI0)
+#define FIQ_AVE               (FIQ_START+INTERRUPT_AVE)
+#define FIQ_CAM0              (FIQ_START+INTERRUPT_CAM0)
+#define FIQ_CAM1              (FIQ_START+INTERRUPT_CAM1)
+#define FIQ_HDMI0             (FIQ_START+INTERRUPT_HDMI0)
+#define FIQ_HDMI1             (FIQ_START+INTERRUPT_HDMI1)
+#define FIQ_PIXELVALVE1       (FIQ_START+INTERRUPT_PIXELVALVE1)
+#define FIQ_I2CSPISLV         (FIQ_START+INTERRUPT_I2CSPISLV)
+#define FIQ_DSI1              (FIQ_START+INTERRUPT_DSI1)
+#define FIQ_PWA0              (FIQ_START+INTERRUPT_PWA0)
+#define FIQ_PWA1              (FIQ_START+INTERRUPT_PWA1)
+#define FIQ_CPR               (FIQ_START+INTERRUPT_CPR)
+#define FIQ_SMI               (FIQ_START+INTERRUPT_SMI)
+#define FIQ_GPIO0             (FIQ_START+INTERRUPT_GPIO0)
+#define FIQ_GPIO1             (FIQ_START+INTERRUPT_GPIO1)
+#define FIQ_GPIO2             (FIQ_START+INTERRUPT_GPIO2)
+#define FIQ_GPIO3             (FIQ_START+INTERRUPT_GPIO3)
+#define FIQ_I2C               (FIQ_START+INTERRUPT_I2C)
+#define FIQ_SPI               (FIQ_START+INTERRUPT_SPI)
+#define FIQ_I2SPCM            (FIQ_START+INTERRUPT_I2SPCM)
+#define FIQ_SDIO              (FIQ_START+INTERRUPT_SDIO)
+#define FIQ_UART              (FIQ_START+INTERRUPT_UART)
+#define FIQ_SLIMBUS           (FIQ_START+INTERRUPT_SLIMBUS)
+#define FIQ_VEC               (FIQ_START+INTERRUPT_VEC)
+#define FIQ_CPG               (FIQ_START+INTERRUPT_CPG)
+#define FIQ_RNG               (FIQ_START+INTERRUPT_RNG)
+#define FIQ_ARASANSDIO        (FIQ_START+INTERRUPT_ARASANSDIO)
+#define FIQ_AVSPMON           (FIQ_START+INTERRUPT_AVSPMON)
+
+#define FIQ_ARM_TIMER         (FIQ_START+INTERRUPT_ARM_TIMER)
+#define FIQ_ARM_MAILBOX       (FIQ_START+INTERRUPT_ARM_MAILBOX)
+#define FIQ_ARM_DOORBELL_0    (FIQ_START+INTERRUPT_ARM_DOORBELL_0)
+#define FIQ_ARM_DOORBELL_1    (FIQ_START+INTERRUPT_ARM_DOORBELL_1)
+#define FIQ_VPU0_HALTED       (FIQ_START+INTERRUPT_VPU0_HALTED)
+#define FIQ_VPU1_HALTED       (FIQ_START+INTERRUPT_VPU1_HALTED)
+#define FIQ_ILLEGAL_TYPE0     (FIQ_START+INTERRUPT_ILLEGAL_TYPE0)
+#define FIQ_ILLEGAL_TYPE1     (FIQ_START+INTERRUPT_ILLEGAL_TYPE1)
+#define FIQ_PENDING1          (FIQ_START+INTERRUPT_PENDING1)
+#define FIQ_PENDING2          (FIQ_START+INTERRUPT_PENDING2)
+
+#define FIQ_ARM_LOCAL_CNTPSIRQ   (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_CNTPSIRQ)
+#define FIQ_ARM_LOCAL_CNTPNSIRQ  (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_CNTPNSIRQ)
+#define FIQ_ARM_LOCAL_CNTHPIRQ   (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_CNTHPIRQ)
+#define FIQ_ARM_LOCAL_CNTVIRQ    (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_CNTVIRQ)
+#define FIQ_ARM_LOCAL_MAILBOX0   (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_MAILBOX0)
+#define FIQ_ARM_LOCAL_MAILBOX1   (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_MAILBOX1)
+#define FIQ_ARM_LOCAL_MAILBOX2   (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_MAILBOX2)
+#define FIQ_ARM_LOCAL_MAILBOX3   (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_MAILBOX3)
+#define FIQ_ARM_LOCAL_GPU_FAST   (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_GPU_FAST)
+#define FIQ_ARM_LOCAL_PMU_FAST   (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_PMU_FAST)
+#define FIQ_ARM_LOCAL_ZERO       (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_ZERO)
+#define FIQ_ARM_LOCAL_TIMER      (FIQ_ARMCTRL_START + INTERRUPT_ARM_LOCAL_TIMER)
+
+#define HARD_IRQS	(128)
+#define FIQ_IRQS	(128)
+#define GPIO_IRQ_START	(HARD_IRQS + FIQ_IRQS)
+#define GPIO_IRQS	(32*5)
+#define SPARE_ALLOC_IRQS      64
+#define BCM2708_ALLOC_IRQS    (HARD_IRQS+FIQ_IRQS+GPIO_IRQS+SPARE_ALLOC_IRQS)
+#define FREE_IRQS             128
+#define NR_IRQS               (BCM2708_ALLOC_IRQS+FREE_IRQS)
+
+#endif /* _BCM2708_IRQS_H_ */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/memory.h linux-rpi/arch/arm/mach-bcm2709/include/mach/memory.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/memory.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/memory.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,57 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/memory.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+/* Memory overview:
+
+   [ARMcore] <--virtual addr-->
+   [ARMmmu] <--physical addr-->
+   [GERTmap] <--bus add-->
+   [VCperiph]
+
+*/
+
+/*
+ * Physical DRAM offset.
+ */
+#define BCM_PLAT_PHYS_OFFSET	UL(0x00000000)
+#define VC_ARMMEM_OFFSET	UL(0x00000000)   /* offset in VC of ARM memory */
+
+#ifdef CONFIG_BCM2708_NOL2CACHE
+ #define _REAL_BUS_OFFSET UL(0xC0000000)   /* don't use L1 or L2 caches */
+#else
+ #define _REAL_BUS_OFFSET UL(0x40000000)   /* use L2 cache */
+#endif
+
+/* We're using the memory at 64M in the VideoCore for Linux - this adjustment
+ * will provide the offset into this area as well as setting the bits that
+ * stop the L1 and L2 cache from being used
+ *
+ * WARNING: this only works because the ARM is given memory at a fixed location
+ *          (ARMMEM_OFFSET)
+ */
+#define BUS_OFFSET          (VC_ARMMEM_OFFSET + _REAL_BUS_OFFSET)
+#define __virt_to_bus(x)    ((x) + (BUS_OFFSET - PAGE_OFFSET))
+#define __bus_to_virt(x)    ((x) - (BUS_OFFSET - PAGE_OFFSET))
+#define __pfn_to_bus(x)     (__pfn_to_phys(x) + (BUS_OFFSET - BCM_PLAT_PHYS_OFFSET))
+#define __bus_to_pfn(x)     __phys_to_pfn((x) - (BUS_OFFSET - BCM_PLAT_PHYS_OFFSET))
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/platform.h linux-rpi/arch/arm/mach-bcm2709/include/mach/platform.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/platform.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/platform.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,225 @@
+/*
+ * arch/arm/mach-bcm2708/include/mach/platform.h
+ *
+ * Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _BCM2708_PLATFORM_H
+#define _BCM2708_PLATFORM_H
+
+
+/* macros to get at IO space when running virtually */
+#define IO_ADDRESS(x)	(((x) & 0x00ffffff) + (((x) >> 4) & 0x0f000000) + 0xf0000000)
+
+#define __io_address(n)     IOMEM(IO_ADDRESS(n))
+
+
+/*
+ *  SDRAM
+ */
+#define BCM2708_SDRAM_BASE           0x00000000
+
+/*
+ *  Logic expansion modules
+ *
+ */
+
+
+/* ------------------------------------------------------------------------
+ *  BCM2708 ARMCTRL Registers
+ * ------------------------------------------------------------------------
+ */
+
+#define HW_REGISTER_RW(addr) (addr)
+#define HW_REGISTER_RO(addr) (addr)
+
+#include "arm_control.h"
+#undef ARM_BASE
+
+/*
+ * Definitions and addresses for the ARM CONTROL logic
+ * This file is manually generated.
+ */
+
+#define BCM2708_PERI_BASE        0x3F000000
+#define IC0_BASE                 (BCM2708_PERI_BASE + 0x2000)
+#define ST_BASE                  (BCM2708_PERI_BASE + 0x3000)   /* System Timer */
+#define MPHI_BASE		 (BCM2708_PERI_BASE + 0x6000)	/* Message -based Parallel Host Interface */
+#define DMA_BASE		 (BCM2708_PERI_BASE + 0x7000)	/* DMA controller */
+#define ARM_BASE                 (BCM2708_PERI_BASE + 0xB000)	 /* BCM2708 ARM control block */
+#define PM_BASE			 (BCM2708_PERI_BASE + 0x100000) /* Power Management, Reset controller and Watchdog registers */
+#define PCM_CLOCK_BASE           (BCM2708_PERI_BASE + 0x101098) /* PCM Clock */
+#define RNG_BASE                 (BCM2708_PERI_BASE + 0x104000) /* Hardware RNG */
+#define GPIO_BASE                (BCM2708_PERI_BASE + 0x200000) /* GPIO */
+#define UART0_BASE               (BCM2708_PERI_BASE + 0x201000)	/* Uart 0 */
+#define MMCI0_BASE               (BCM2708_PERI_BASE + 0x202000) /* MMC interface */
+#define I2S_BASE                 (BCM2708_PERI_BASE + 0x203000) /* I2S */
+#define SPI0_BASE		 (BCM2708_PERI_BASE + 0x204000) /* SPI0 */
+#define BSC0_BASE		 (BCM2708_PERI_BASE + 0x205000) /* BSC0 I2C/TWI */
+#define UART1_BASE               (BCM2708_PERI_BASE + 0x215000) /* Uart 1 */
+#define EMMC_BASE                (BCM2708_PERI_BASE + 0x300000) /* eMMC interface */
+#define SMI_BASE		 (BCM2708_PERI_BASE + 0x600000) /* SMI */
+#define BSC1_BASE		 (BCM2708_PERI_BASE + 0x804000) /* BSC1 I2C/TWI */
+#define USB_BASE                 (BCM2708_PERI_BASE + 0x980000) /* DTC_OTG USB controller */
+#define MCORE_BASE               (BCM2708_PERI_BASE + 0x0000)   /* Fake frame buffer device (actually the multicore sync block*/
+
+#define ARMCTRL_BASE             (ARM_BASE + 0x000)
+#define ARMCTRL_IC_BASE          (ARM_BASE + 0x200)           /* ARM interrupt controller */
+#define ARMCTRL_TIMER0_1_BASE    (ARM_BASE + 0x400)           /* Timer 0 and 1 */
+#define ARMCTRL_0_SBM_BASE       (ARM_BASE + 0x800)           /* User 0 (ARM)'s Semaphores Doorbells and Mailboxes */
+
+
+/*
+ * Interrupt assignments
+ */
+
+#define ARM_IRQ1_BASE                  0
+#define INTERRUPT_TIMER0               (ARM_IRQ1_BASE + 0)
+#define INTERRUPT_TIMER1               (ARM_IRQ1_BASE + 1)
+#define INTERRUPT_TIMER2               (ARM_IRQ1_BASE + 2)
+#define INTERRUPT_TIMER3               (ARM_IRQ1_BASE + 3)
+#define INTERRUPT_CODEC0               (ARM_IRQ1_BASE + 4)
+#define INTERRUPT_CODEC1               (ARM_IRQ1_BASE + 5)
+#define INTERRUPT_CODEC2               (ARM_IRQ1_BASE + 6)
+#define INTERRUPT_VC_JPEG              (ARM_IRQ1_BASE + 7)
+#define INTERRUPT_ISP                  (ARM_IRQ1_BASE + 8)
+#define INTERRUPT_VC_USB               (ARM_IRQ1_BASE + 9)
+#define INTERRUPT_VC_3D                (ARM_IRQ1_BASE + 10)
+#define INTERRUPT_TRANSPOSER           (ARM_IRQ1_BASE + 11)
+#define INTERRUPT_MULTICORESYNC0       (ARM_IRQ1_BASE + 12)
+#define INTERRUPT_MULTICORESYNC1       (ARM_IRQ1_BASE + 13)
+#define INTERRUPT_MULTICORESYNC2       (ARM_IRQ1_BASE + 14)
+#define INTERRUPT_MULTICORESYNC3       (ARM_IRQ1_BASE + 15)
+#define INTERRUPT_DMA0                 (ARM_IRQ1_BASE + 16)
+#define INTERRUPT_DMA1                 (ARM_IRQ1_BASE + 17)
+#define INTERRUPT_VC_DMA2              (ARM_IRQ1_BASE + 18)
+#define INTERRUPT_VC_DMA3              (ARM_IRQ1_BASE + 19)
+#define INTERRUPT_DMA4                 (ARM_IRQ1_BASE + 20)
+#define INTERRUPT_DMA5                 (ARM_IRQ1_BASE + 21)
+#define INTERRUPT_DMA6                 (ARM_IRQ1_BASE + 22)
+#define INTERRUPT_DMA7                 (ARM_IRQ1_BASE + 23)
+#define INTERRUPT_DMA8                 (ARM_IRQ1_BASE + 24)
+#define INTERRUPT_DMA9                 (ARM_IRQ1_BASE + 25)
+#define INTERRUPT_DMA10                (ARM_IRQ1_BASE + 26)
+#define INTERRUPT_DMA11                (ARM_IRQ1_BASE + 27)
+#define INTERRUPT_DMA12                (ARM_IRQ1_BASE + 28)
+#define INTERRUPT_AUX                (ARM_IRQ1_BASE + 29)
+#define INTERRUPT_ARM                  (ARM_IRQ1_BASE + 30)
+#define INTERRUPT_VPUDMA               (ARM_IRQ1_BASE + 31)
+
+#define ARM_IRQ2_BASE                  32
+#define INTERRUPT_HOSTPORT             (ARM_IRQ2_BASE + 0)
+#define INTERRUPT_VIDEOSCALER          (ARM_IRQ2_BASE + 1)
+#define INTERRUPT_CCP2TX               (ARM_IRQ2_BASE + 2)
+#define INTERRUPT_SDC                  (ARM_IRQ2_BASE + 3)
+#define INTERRUPT_DSI0                 (ARM_IRQ2_BASE + 4)
+#define INTERRUPT_AVE                  (ARM_IRQ2_BASE + 5)
+#define INTERRUPT_CAM0                 (ARM_IRQ2_BASE + 6)
+#define INTERRUPT_CAM1                 (ARM_IRQ2_BASE + 7)
+#define INTERRUPT_HDMI0                (ARM_IRQ2_BASE + 8)
+#define INTERRUPT_HDMI1                (ARM_IRQ2_BASE + 9)
+#define INTERRUPT_PIXELVALVE1          (ARM_IRQ2_BASE + 10)
+#define INTERRUPT_I2CSPISLV            (ARM_IRQ2_BASE + 11)
+#define INTERRUPT_DSI1                 (ARM_IRQ2_BASE + 12)
+#define INTERRUPT_PWA0                 (ARM_IRQ2_BASE + 13)
+#define INTERRUPT_PWA1                 (ARM_IRQ2_BASE + 14)
+#define INTERRUPT_CPR                  (ARM_IRQ2_BASE + 15)
+#define INTERRUPT_SMI                  (ARM_IRQ2_BASE + 16)
+#define INTERRUPT_GPIO0                (ARM_IRQ2_BASE + 17)
+#define INTERRUPT_GPIO1                (ARM_IRQ2_BASE + 18)
+#define INTERRUPT_GPIO2                (ARM_IRQ2_BASE + 19)
+#define INTERRUPT_GPIO3                (ARM_IRQ2_BASE + 20)
+#define INTERRUPT_VC_I2C               (ARM_IRQ2_BASE + 21)
+#define INTERRUPT_VC_SPI               (ARM_IRQ2_BASE + 22)
+#define INTERRUPT_VC_I2SPCM            (ARM_IRQ2_BASE + 23)
+#define INTERRUPT_VC_SDIO              (ARM_IRQ2_BASE + 24)
+#define INTERRUPT_VC_UART              (ARM_IRQ2_BASE + 25)
+#define INTERRUPT_SLIMBUS              (ARM_IRQ2_BASE + 26)
+#define INTERRUPT_VEC                  (ARM_IRQ2_BASE + 27)
+#define INTERRUPT_CPG                  (ARM_IRQ2_BASE + 28)
+#define INTERRUPT_RNG                  (ARM_IRQ2_BASE + 29)
+#define INTERRUPT_VC_ARASANSDIO        (ARM_IRQ2_BASE + 30)
+#define INTERRUPT_AVSPMON              (ARM_IRQ2_BASE + 31)
+
+#define ARM_IRQ0_BASE                  64
+#define INTERRUPT_ARM_TIMER            (ARM_IRQ0_BASE + 0)
+#define INTERRUPT_ARM_MAILBOX          (ARM_IRQ0_BASE + 1)
+#define INTERRUPT_ARM_DOORBELL_0       (ARM_IRQ0_BASE + 2)
+#define INTERRUPT_ARM_DOORBELL_1       (ARM_IRQ0_BASE + 3)
+#define INTERRUPT_VPU0_HALTED          (ARM_IRQ0_BASE + 4)
+#define INTERRUPT_VPU1_HALTED          (ARM_IRQ0_BASE + 5)
+#define INTERRUPT_ILLEGAL_TYPE0        (ARM_IRQ0_BASE + 6)
+#define INTERRUPT_ILLEGAL_TYPE1        (ARM_IRQ0_BASE + 7)
+#define INTERRUPT_PENDING1             (ARM_IRQ0_BASE + 8)
+#define INTERRUPT_PENDING2             (ARM_IRQ0_BASE + 9)
+#define INTERRUPT_JPEG                 (ARM_IRQ0_BASE + 10)
+#define INTERRUPT_USB                  (ARM_IRQ0_BASE + 11)
+#define INTERRUPT_3D                   (ARM_IRQ0_BASE + 12)
+#define INTERRUPT_DMA2                 (ARM_IRQ0_BASE + 13)
+#define INTERRUPT_DMA3                 (ARM_IRQ0_BASE + 14)
+#define INTERRUPT_I2C                  (ARM_IRQ0_BASE + 15)
+#define INTERRUPT_SPI                  (ARM_IRQ0_BASE + 16)
+#define INTERRUPT_I2SPCM               (ARM_IRQ0_BASE + 17)
+#define INTERRUPT_SDIO                 (ARM_IRQ0_BASE + 18)
+#define INTERRUPT_UART                 (ARM_IRQ0_BASE + 19)
+#define INTERRUPT_ARASANSDIO           (ARM_IRQ0_BASE + 20)
+
+#define ARM_IRQ_LOCAL_BASE             96
+#define INTERRUPT_ARM_LOCAL_CNTPSIRQ   (ARM_IRQ_LOCAL_BASE + 0)
+#define INTERRUPT_ARM_LOCAL_CNTPNSIRQ  (ARM_IRQ_LOCAL_BASE + 1)
+#define INTERRUPT_ARM_LOCAL_CNTHPIRQ   (ARM_IRQ_LOCAL_BASE + 2)
+#define INTERRUPT_ARM_LOCAL_CNTVIRQ    (ARM_IRQ_LOCAL_BASE + 3)
+#define INTERRUPT_ARM_LOCAL_MAILBOX0   (ARM_IRQ_LOCAL_BASE + 4)
+#define INTERRUPT_ARM_LOCAL_MAILBOX1   (ARM_IRQ_LOCAL_BASE + 5)
+#define INTERRUPT_ARM_LOCAL_MAILBOX2   (ARM_IRQ_LOCAL_BASE + 6)
+#define INTERRUPT_ARM_LOCAL_MAILBOX3   (ARM_IRQ_LOCAL_BASE + 7)
+#define INTERRUPT_ARM_LOCAL_GPU_FAST   (ARM_IRQ_LOCAL_BASE + 8)
+#define INTERRUPT_ARM_LOCAL_PMU_FAST   (ARM_IRQ_LOCAL_BASE + 9)
+#define INTERRUPT_ARM_LOCAL_ZERO       (ARM_IRQ_LOCAL_BASE + 10)
+#define INTERRUPT_ARM_LOCAL_TIMER      (ARM_IRQ_LOCAL_BASE + 11)
+
+/*
+ * Watchdog
+ */
+#define PM_RSTC			       (PM_BASE+0x1c)
+#define PM_RSTS			       (PM_BASE+0x20)
+#define PM_WDOG			       (PM_BASE+0x24)
+
+#define PM_WDOG_RESET                                         0000000000
+#define PM_PASSWORD		       0x5a000000
+#define PM_WDOG_TIME_SET	       0x000fffff
+#define PM_RSTC_WRCFG_CLR              0xffffffcf
+#define PM_RSTC_WRCFG_SET              0x00000030
+#define PM_RSTC_WRCFG_FULL_RESET       0x00000020
+#define PM_RSTC_RESET                  0x00000102
+
+#define PM_RSTS_HADPOR_SET                                 0x00001000
+#define PM_RSTS_HADSRH_SET                                 0x00000400
+#define PM_RSTS_HADSRF_SET                                 0x00000200
+#define PM_RSTS_HADSRQ_SET                                 0x00000100
+#define PM_RSTS_HADWRH_SET                                 0x00000040
+#define PM_RSTS_HADWRF_SET                                 0x00000020
+#define PM_RSTS_HADWRQ_SET                                 0x00000010
+#define PM_RSTS_HADDRH_SET                                 0x00000004
+#define PM_RSTS_HADDRF_SET                                 0x00000002
+#define PM_RSTS_HADDRQ_SET                                 0x00000001
+
+#define UART0_CLOCK      3000000
+
+#endif
+
+/* END */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/power.h linux-rpi/arch/arm/mach-bcm2709/include/mach/power.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/power.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/power.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,26 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/power.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This device provides a shared mechanism for controlling the power to
+ * VideoCore subsystems.
+ */
+
+#ifndef _MACH_BCM2708_POWER_H
+#define _MACH_BCM2708_POWER_H
+
+#include <linux/types.h>
+#include <mach/arm_power.h>
+
+typedef unsigned int BCM_POWER_HANDLE_T;
+
+extern int bcm_power_open(BCM_POWER_HANDLE_T *handle);
+extern int bcm_power_request(BCM_POWER_HANDLE_T handle, uint32_t request);
+extern int bcm_power_close(BCM_POWER_HANDLE_T handle);
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/system.h linux-rpi/arch/arm/mach-bcm2709/include/mach/system.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/system.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/system.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,38 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/system.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 2003 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H
+
+#include <linux/io.h>
+#include <mach/hardware.h>
+#include <mach/platform.h>
+
+static inline void arch_idle(void)
+{
+	/*
+	 * This should do all the clock switching
+	 * and wait for interrupt tricks
+	 */
+	cpu_do_idle();
+}
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/timex.h linux-rpi/arch/arm/mach-bcm2709/include/mach/timex.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/timex.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/timex.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,23 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/timex.h
+ *
+ *  BCM2708 sysem clock frequency
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define CLOCK_TICK_RATE		(1000000)
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/uncompress.h linux-rpi/arch/arm/mach-bcm2709/include/mach/uncompress.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/uncompress.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/uncompress.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,84 @@
+/*
+ *  arch/arm/mach-bcn2708/include/mach/uncompress.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *  Copyright (C) 2003 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/io.h>
+#include <linux/amba/serial.h>
+#include <mach/hardware.h>
+
+#define UART_BAUD 115200
+
+#define BCM2708_UART_DR   __io(UART0_BASE + UART01x_DR)
+#define BCM2708_UART_FR   __io(UART0_BASE + UART01x_FR)
+#define BCM2708_UART_IBRD __io(UART0_BASE + UART011_IBRD)
+#define BCM2708_UART_FBRD __io(UART0_BASE + UART011_FBRD)
+#define BCM2708_UART_LCRH __io(UART0_BASE + UART011_LCRH)
+#define BCM2708_UART_CR   __io(UART0_BASE + UART011_CR)
+
+/*
+ * This does not append a newline
+ */
+static inline void putc(int c)
+{
+	while (__raw_readl(BCM2708_UART_FR) & UART01x_FR_TXFF)
+		barrier();
+
+	__raw_writel(c, BCM2708_UART_DR);
+}
+
+static inline void flush(void)
+{
+	int fr;
+
+	do {
+		fr = __raw_readl(BCM2708_UART_FR);
+		barrier();
+	} while ((fr & (UART011_FR_TXFE | UART01x_FR_BUSY)) != UART011_FR_TXFE);
+}
+
+static inline void arch_decomp_setup(void)
+{
+	int temp, div, rem, frac;
+
+	temp = 16 * UART_BAUD;
+	div = UART0_CLOCK / temp;
+	rem = UART0_CLOCK % temp;
+	temp = (8 * rem) / UART_BAUD;
+	frac = (temp >> 1) + (temp & 1);
+
+	/* Make sure the UART is disabled before we start */
+	__raw_writel(0, BCM2708_UART_CR);
+
+	/* Set the baud rate */
+	__raw_writel(div, BCM2708_UART_IBRD);
+	__raw_writel(frac, BCM2708_UART_FBRD);
+
+	/* Set the UART to 8n1, FIFO enabled */
+	__raw_writel(UART01x_LCRH_WLEN_8 | UART01x_LCRH_FEN, BCM2708_UART_LCRH);
+
+	/* Enable the UART */
+	__raw_writel(UART01x_CR_UARTEN | UART011_CR_TXE | UART011_CR_RXE,
+			BCM2708_UART_CR);
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_wdog()
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/vcio.h linux-rpi/arch/arm/mach-bcm2709/include/mach/vcio.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/vcio.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/vcio.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,165 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/vcio.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef _MACH_BCM2708_VCIO_H
+#define _MACH_BCM2708_VCIO_H
+
+/* Routines to handle I/O via the VideoCore "ARM control" registers
+ * (semaphores, doorbells, mailboxes)
+ */
+
+#define BCM_VCIO_DRIVER_NAME "bcm2708_vcio"
+
+/* Constants shared with the ARM identifying separate mailbox channels */
+#define MBOX_CHAN_POWER    0 /* for use by the power management interface */
+#define MBOX_CHAN_FB       1 /* for use by the frame buffer */
+#define MBOX_CHAN_VCHIQ    3 /* for use by the VCHIQ interface */
+#define MBOX_CHAN_PROPERTY 8 /* for use by the property channel */
+#define MBOX_CHAN_COUNT    9
+
+enum {
+	VCMSG_PROCESS_REQUEST 		= 0x00000000
+};
+enum {
+	VCMSG_REQUEST_SUCCESSFUL 	= 0x80000000,
+	VCMSG_REQUEST_FAILED 		= 0x80000001
+};
+/* Mailbox property tags */
+enum {
+	VCMSG_PROPERTY_END               = 0x00000000,
+	VCMSG_GET_FIRMWARE_REVISION      = 0x00000001,
+	VCMSG_GET_BOARD_MODEL            = 0x00010001,
+	VCMSG_GET_BOARD_REVISION	 = 0x00010002,
+	VCMSG_GET_BOARD_MAC_ADDRESS	 = 0x00010003,
+	VCMSG_GET_BOARD_SERIAL		 = 0x00010004,
+	VCMSG_GET_ARM_MEMORY		 = 0x00010005,
+	VCMSG_GET_VC_MEMORY		 = 0x00010006,
+	VCMSG_GET_CLOCKS		 = 0x00010007,
+	VCMSG_GET_COMMAND_LINE           = 0x00050001,
+	VCMSG_GET_DMA_CHANNELS           = 0x00060001,
+	VCMSG_GET_POWER_STATE            = 0x00020001,
+	VCMSG_GET_TIMING		 = 0x00020002,
+	VCMSG_SET_POWER_STATE            = 0x00028001,
+	VCMSG_GET_CLOCK_STATE            = 0x00030001,
+	VCMSG_SET_CLOCK_STATE            = 0x00038001,
+	VCMSG_GET_CLOCK_RATE             = 0x00030002,
+	VCMSG_SET_CLOCK_RATE             = 0x00038002,
+	VCMSG_GET_VOLTAGE                = 0x00030003,
+	VCMSG_SET_VOLTAGE                = 0x00038003,
+	VCMSG_GET_MAX_CLOCK              = 0x00030004,
+	VCMSG_GET_MAX_VOLTAGE            = 0x00030005,
+	VCMSG_GET_TEMPERATURE            = 0x00030006,
+	VCMSG_GET_MIN_CLOCK              = 0x00030007,
+	VCMSG_GET_MIN_VOLTAGE            = 0x00030008,
+	VCMSG_GET_TURBO                  = 0x00030009,
+	VCMSG_GET_MAX_TEMPERATURE        = 0x0003000a,
+	VCMSG_GET_STC                    = 0x0003000b,
+	VCMSG_SET_TURBO                  = 0x00038009,
+	VCMSG_SET_ALLOCATE_MEM           = 0x0003000c,
+	VCMSG_SET_LOCK_MEM               = 0x0003000d,
+	VCMSG_SET_UNLOCK_MEM             = 0x0003000e,
+	VCMSG_SET_RELEASE_MEM            = 0x0003000f,
+	VCMSG_SET_EXECUTE_CODE           = 0x00030010,
+	VCMSG_SET_EXECUTE_QPU            = 0x00030011,
+	VCMSG_SET_ENABLE_QPU             = 0x00030012,
+	VCMSG_GET_RESOURCE_HANDLE        = 0x00030014,
+	VCMSG_GET_EDID_BLOCK             = 0x00030020,
+	VCMSG_GET_CUSTOMER_OTP           = 0x00030021,
+	VCMSG_SET_CUSTOMER_OTP           = 0x00038021,
+	VCMSG_SET_ALLOCATE_BUFFER        = 0x00040001,
+	VCMSG_SET_RELEASE_BUFFER         = 0x00048001,
+	VCMSG_SET_BLANK_SCREEN           = 0x00040002,
+	VCMSG_TST_BLANK_SCREEN           = 0x00044002,
+	VCMSG_GET_PHYSICAL_WIDTH_HEIGHT  = 0x00040003,
+	VCMSG_TST_PHYSICAL_WIDTH_HEIGHT  = 0x00044003,
+	VCMSG_SET_PHYSICAL_WIDTH_HEIGHT  = 0x00048003,
+	VCMSG_GET_VIRTUAL_WIDTH_HEIGHT   = 0x00040004,
+	VCMSG_TST_VIRTUAL_WIDTH_HEIGHT   = 0x00044004,
+	VCMSG_SET_VIRTUAL_WIDTH_HEIGHT   = 0x00048004,
+	VCMSG_GET_DEPTH                  = 0x00040005,
+	VCMSG_TST_DEPTH                  = 0x00044005,
+	VCMSG_SET_DEPTH                  = 0x00048005,
+	VCMSG_GET_PIXEL_ORDER            = 0x00040006,
+	VCMSG_TST_PIXEL_ORDER            = 0x00044006,
+	VCMSG_SET_PIXEL_ORDER            = 0x00048006,
+	VCMSG_GET_ALPHA_MODE             = 0x00040007,
+	VCMSG_TST_ALPHA_MODE             = 0x00044007,
+	VCMSG_SET_ALPHA_MODE             = 0x00048007,
+	VCMSG_GET_PITCH                  = 0x00040008,
+	VCMSG_TST_PITCH                  = 0x00044008,
+	VCMSG_SET_PITCH                  = 0x00048008,
+	VCMSG_GET_VIRTUAL_OFFSET         = 0x00040009,
+	VCMSG_TST_VIRTUAL_OFFSET         = 0x00044009,
+	VCMSG_SET_VIRTUAL_OFFSET         = 0x00048009,
+	VCMSG_GET_OVERSCAN               = 0x0004000a,
+	VCMSG_TST_OVERSCAN               = 0x0004400a,
+	VCMSG_SET_OVERSCAN               = 0x0004800a,
+	VCMSG_GET_PALETTE                = 0x0004000b,
+	VCMSG_TST_PALETTE                = 0x0004400b,
+	VCMSG_SET_PALETTE                = 0x0004800b,
+	VCMSG_GET_LAYER                  = 0x0004000c,
+	VCMSG_TST_LAYER                  = 0x0004400c,
+	VCMSG_SET_LAYER                  = 0x0004800c,
+	VCMSG_GET_TRANSFORM              = 0x0004000d,
+	VCMSG_TST_TRANSFORM              = 0x0004400d,
+	VCMSG_SET_TRANSFORM              = 0x0004800d,
+	VCMSG_TST_VSYNC                  = 0x0004400e,
+	VCMSG_SET_VSYNC                  = 0x0004800e,
+	VCMSG_SET_CURSOR_INFO            = 0x00008010,
+	VCMSG_SET_CURSOR_STATE           = 0x00008011,
+};
+
+extern int /*rc*/ bcm_mailbox_read(unsigned chan, uint32_t *data28);
+extern int /*rc*/ bcm_mailbox_write(unsigned chan, uint32_t data28);
+extern int /*rc*/ bcm_mailbox_property(void *data, int size);
+
+#include <linux/ioctl.h>
+
+/*
+ * The major device number. We can't rely on dynamic
+ * registration any more, because ioctls need to know
+ * it.
+ */
+#define MAJOR_NUM 100
+
+/*
+ * Set the message of the device driver
+ */
+#define IOCTL_MBOX_PROPERTY _IOWR(MAJOR_NUM, 0, char *)
+/*
+ * _IOWR means that we're creating an ioctl command
+ * number for passing information from a user process
+ * to the kernel module and from the kernel module to user process
+ *
+ * The first arguments, MAJOR_NUM, is the major device
+ * number we're using.
+ *
+ * The second argument is the number of the command
+ * (there could be several with different meanings).
+ *
+ * The third argument is the type we want to get from
+ * the process to the kernel.
+ */
+
+/*
+ * The name of the device file
+ */
+#define DEVICE_FILE_NAME "vcio"
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/vc_mem.h linux-rpi/arch/arm/mach-bcm2709/include/mach/vc_mem.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/vc_mem.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/vc_mem.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,35 @@
+/*****************************************************************************
+* Copyright 2010 - 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#if !defined( VC_MEM_H )
+#define VC_MEM_H
+
+#include <linux/ioctl.h>
+
+#define VC_MEM_IOC_MAGIC  'v'
+
+#define VC_MEM_IOC_MEM_PHYS_ADDR    _IOR( VC_MEM_IOC_MAGIC, 0, unsigned long )
+#define VC_MEM_IOC_MEM_SIZE         _IOR( VC_MEM_IOC_MAGIC, 1, unsigned int )
+#define VC_MEM_IOC_MEM_BASE         _IOR( VC_MEM_IOC_MAGIC, 2, unsigned int )
+#define VC_MEM_IOC_MEM_LOAD         _IOR( VC_MEM_IOC_MAGIC, 3, unsigned int )
+
+#if defined( __KERNEL__ )
+#define VC_MEM_TO_ARM_ADDR_MASK 0x3FFFFFFF
+
+extern unsigned long mm_vc_mem_phys_addr;
+extern unsigned int  mm_vc_mem_size;
+extern int vc_mem_get_current_size( void );
+#endif
+
+#endif  /* VC_MEM_H */
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/vc_support.h linux-rpi/arch/arm/mach-bcm2709/include/mach/vc_support.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/vc_support.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/vc_support.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,69 @@
+#ifndef _VC_SUPPORT_H_
+#define _VC_SUPPORT_H_
+
+/*
+ * vc_support.h
+ *
+ *  Created on: 25 Nov 2012
+ *      Author: Simon
+ */
+
+enum {
+/*
+      If a MEM_HANDLE_T is discardable, the memory manager may resize it to size
+      0 at any time when it is not locked or retained.
+   */
+   MEM_FLAG_DISCARDABLE = 1 << 0,
+
+   /*
+      If a MEM_HANDLE_T is allocating (or normal), its block of memory will be
+      accessed in an allocating fashion through the cache.
+   */
+   MEM_FLAG_NORMAL = 0 << 2,
+   MEM_FLAG_ALLOCATING = MEM_FLAG_NORMAL,
+
+   /*
+      If a MEM_HANDLE_T is direct, its block of memory will be accessed
+      directly, bypassing the cache.
+   */
+   MEM_FLAG_DIRECT = 1 << 2,
+
+   /*
+      If a MEM_HANDLE_T is coherent, its block of memory will be accessed in a
+      non-allocating fashion through the cache.
+   */
+   MEM_FLAG_COHERENT = 2 << 2,
+
+   /*
+      If a MEM_HANDLE_T is L1-nonallocating, its block of memory will be accessed by
+      the VPU in a fashion which is allocating in L2, but only coherent in L1.
+   */
+   MEM_FLAG_L1_NONALLOCATING = (MEM_FLAG_DIRECT | MEM_FLAG_COHERENT),
+
+   /*
+      If a MEM_HANDLE_T is zero'd, its contents are set to 0 rather than
+      MEM_HANDLE_INVALID on allocation and resize up.
+   */
+   MEM_FLAG_ZERO = 1 << 4,
+
+   /*
+      If a MEM_HANDLE_T is uninitialised, it will not be reset to a defined value
+      (either zero, or all 1's) on allocation.
+    */
+   MEM_FLAG_NO_INIT = 1 << 5,
+
+   /*
+      Hints.
+   */
+   MEM_FLAG_HINT_PERMALOCK = 1 << 6, /* Likely to be locked for long periods of time. */
+};
+
+unsigned int AllocateVcMemory(unsigned int *pHandle, unsigned int size, unsigned int alignment, unsigned int flags);
+unsigned int ReleaseVcMemory(unsigned int handle);
+unsigned int LockVcMemory(unsigned int *pBusAddress, unsigned int handle);
+unsigned int UnlockVcMemory(unsigned int handle);
+
+unsigned int ExecuteVcCode(unsigned int code,
+		unsigned int r0, unsigned int r1, unsigned int r2, unsigned int r3, unsigned int r4, unsigned int r5);
+
+#endif
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/include/mach/vmalloc.h linux-rpi/arch/arm/mach-bcm2709/include/mach/vmalloc.h
--- linux-3.18.10/arch/arm/mach-bcm2709/include/mach/vmalloc.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/include/mach/vmalloc.h	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,20 @@
+/*
+ *  arch/arm/mach-bcm2708/include/mach/vmalloc.h
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#define VMALLOC_END		(0xff000000)
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/Kconfig linux-rpi/arch/arm/mach-bcm2709/Kconfig
--- linux-3.18.10/arch/arm/mach-bcm2709/Kconfig	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/Kconfig	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,49 @@
+menu "Broadcom BCM2709 Implementations"
+	depends on ARCH_BCM2709
+
+config MACH_BCM2709
+	bool "Broadcom BCM2709 Development Platform"
+	help
+	  Include support for the Broadcom(R) BCM2709 platform.
+
+config BCM2709_DT
+	bool "BCM2709 Device Tree support"
+	depends on MACH_BCM2709
+	default n
+	select USE_OF
+	select ARCH_REQUIRE_GPIOLIB
+	select PINCTRL
+	select PINCTRL_BCM2835
+	help
+	  Enable Device Tree support for BCM2709
+
+config BCM2708_GPIO
+	bool "BCM2709 gpio support"
+	depends on MACH_BCM2709
+	select ARCH_REQUIRE_GPIOLIB
+        default y
+	help
+	  Include support for the Broadcom(R) BCM2709 gpio.
+
+config BCM2708_VCMEM
+	bool "Videocore Memory"
+	depends on MACH_BCM2709
+        default y
+        help
+          Helper for videocore memory access and total size allocation.
+
+config BCM2708_NOL2CACHE
+	bool "Videocore L2 cache disable"
+	depends on MACH_BCM2709
+        default y
+        help
+          Do not allow ARM to use GPU's L2 cache. Requires disable_l2cache in config.txt.
+
+config BCM2708_SPIDEV
+	bool "Bind spidev to SPI0 master"
+	depends on MACH_BCM2709
+	depends on SPI
+	default y
+	help
+	  Binds spidev driver to the SPI0 master
+endmenu
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/Makefile linux-rpi/arch/arm/mach-bcm2709/Makefile
--- linux-3.18.10/arch/arm/mach-bcm2709/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/Makefile	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,7 @@
+#
+# Makefile for the linux kernel.
+#
+
+obj-$(CONFIG_MACH_BCM2709) 	+= bcm2709.o armctrl.o vcio.o power.o dma.o
+obj-$(CONFIG_BCM2708_GPIO)	+= bcm2708_gpio.o
+obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/Makefile.boot linux-rpi/arch/arm/mach-bcm2709/Makefile.boot
--- linux-3.18.10/arch/arm/mach-bcm2709/Makefile.boot	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/Makefile.boot	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,3 @@
+   zreladdr-y	:= 0x00008000
+params_phys-y	:= 0x00000100
+initrd_phys-y	:= 0x00800000
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/power.c linux-rpi/arch/arm/mach-bcm2709/power.c
--- linux-3.18.10/arch/arm/mach-bcm2709/power.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/power.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,195 @@
+/*
+ *	 linux/arch/arm/mach-bcm2708/power.c
+ *
+ *	 Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This device provides a shared mechanism for controlling the power to
+ * VideoCore subsystems.
+ */
+
+#include <linux/module.h>
+#include <linux/semaphore.h>
+#include <linux/bug.h>
+#include <mach/power.h>
+#include <mach/vcio.h>
+#include <mach/arm_power.h>
+
+#define DRIVER_NAME "bcm2708_power"
+
+#define BCM_POWER_MAXCLIENTS 4
+#define BCM_POWER_NOCLIENT (1<<31)
+
+/* Some drivers expect there devices to be permanently powered */
+#ifdef CONFIG_USB
+#define BCM_POWER_ALWAYS_ON (BCM_POWER_USB)
+#endif
+
+#if 1
+#define DPRINTK printk
+#else
+#define DPRINTK if (0) printk
+#endif
+
+struct state_struct {
+	uint32_t global_request;
+	uint32_t client_request[BCM_POWER_MAXCLIENTS];
+	struct semaphore client_mutex;
+	struct semaphore mutex;
+} g_state;
+
+int bcm_power_open(BCM_POWER_HANDLE_T *handle)
+{
+	BCM_POWER_HANDLE_T i;
+	int ret = -EBUSY;
+
+	down(&g_state.client_mutex);
+
+	for (i = 0; i < BCM_POWER_MAXCLIENTS; i++) {
+		if (g_state.client_request[i] == BCM_POWER_NOCLIENT) {
+			g_state.client_request[i] = BCM_POWER_NONE;
+			*handle = i;
+			ret = 0;
+			break;
+		}
+	}
+
+	up(&g_state.client_mutex);
+
+	DPRINTK("bcm_power_open() -> %d\n", *handle);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(bcm_power_open);
+
+int bcm_power_request(BCM_POWER_HANDLE_T handle, uint32_t request)
+{
+	int rc = 0;
+
+	DPRINTK("bcm_power_request(%d, %x)\n", handle, request);
+
+	if ((handle < BCM_POWER_MAXCLIENTS) &&
+	    (g_state.client_request[handle] != BCM_POWER_NOCLIENT)) {
+		if (down_interruptible(&g_state.mutex) != 0) {
+			DPRINTK("bcm_power_request -> interrupted\n");
+			return -EINTR;
+		}
+
+		if (request != g_state.client_request[handle]) {
+			uint32_t others_request = 0;
+			uint32_t global_request;
+			BCM_POWER_HANDLE_T i;
+
+			for (i = 0; i < BCM_POWER_MAXCLIENTS; i++) {
+				if (i != handle)
+					others_request |=
+					    g_state.client_request[i];
+			}
+			others_request &= ~BCM_POWER_NOCLIENT;
+
+			global_request = request | others_request;
+			if (global_request != g_state.global_request) {
+				uint32_t actual;
+
+				/* Send a request to VideoCore */
+				bcm_mailbox_write(MBOX_CHAN_POWER,
+						  global_request << 4);
+
+				/* Wait for a response during power-up */
+				if (global_request & ~g_state.global_request) {
+					rc = bcm_mailbox_read(MBOX_CHAN_POWER,
+							      &actual);
+					DPRINTK
+					    ("bcm_mailbox_read -> %08x, %d\n",
+					     actual, rc);
+					actual >>= 4;
+				} else {
+					rc = 0;
+					actual = global_request;
+				}
+
+				if (rc == 0) {
+					if (actual != global_request) {
+						printk(KERN_ERR
+						     "%s: prev global %x, new global %x, actual %x, request %x, others_request %x\n",
+						     __func__,
+						     g_state.global_request,
+						     global_request, actual, request, others_request);
+						/* A failure */
+						BUG_ON((others_request & actual)
+						       != others_request);
+						request &= actual;
+						rc = -EIO;
+					}
+
+					g_state.global_request = actual;
+					g_state.client_request[handle] =
+					    request;
+				}
+			}
+		}
+		up(&g_state.mutex);
+	} else {
+		rc = -EINVAL;
+	}
+	DPRINTK("bcm_power_request -> %d\n", rc);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_power_request);
+
+int bcm_power_close(BCM_POWER_HANDLE_T handle)
+{
+	int rc;
+
+	DPRINTK("bcm_power_close(%d)\n", handle);
+
+	rc = bcm_power_request(handle, BCM_POWER_NONE);
+	if (rc == 0)
+		g_state.client_request[handle] = BCM_POWER_NOCLIENT;
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_power_close);
+
+static int __init bcm_power_init(void)
+{
+#if defined(BCM_POWER_ALWAYS_ON)
+	BCM_POWER_HANDLE_T always_on_handle;
+#endif
+	int rc = 0;
+	int i;
+
+	printk(KERN_INFO "bcm_power: Broadcom power driver\n");
+	bcm_mailbox_write(MBOX_CHAN_POWER, 0);
+
+	for (i = 0; i < BCM_POWER_MAXCLIENTS; i++)
+		g_state.client_request[i] = BCM_POWER_NOCLIENT;
+
+	sema_init(&g_state.client_mutex, 1);
+	sema_init(&g_state.mutex, 1);
+
+	g_state.global_request = 0;
+#if defined(BCM_POWER_ALWAYS_ON)
+	if (BCM_POWER_ALWAYS_ON) {
+		bcm_power_open(&always_on_handle);
+		bcm_power_request(always_on_handle, BCM_POWER_ALWAYS_ON);
+	}
+#endif
+
+	return rc;
+}
+
+static void __exit bcm_power_exit(void)
+{
+	bcm_mailbox_write(MBOX_CHAN_POWER, 0);
+}
+
+arch_initcall(bcm_power_init);	/* Initialize early */
+module_exit(bcm_power_exit);
+
+MODULE_AUTHOR("Phil Elwell");
+MODULE_DESCRIPTION("Interface to BCM2708 power management");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/vcio.c linux-rpi/arch/arm/mach-bcm2709/vcio.c
--- linux-3.18.10/arch/arm/mach-bcm2709/vcio.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/vcio.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,484 @@
+/*
+ *  linux/arch/arm/mach-bcm2708/vcio.c
+ *
+ *  Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This device provides a shared mechanism for writing to the mailboxes,
+ * semaphores, doorbells etc. that are shared between the ARM and the
+ * VideoCore processor
+ */
+
+#if defined(CONFIG_SERIAL_BCM_MBOX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/module.h>
+#include <linux/console.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/sysrq.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <linux/io.h>
+
+#include <mach/vcio.h>
+#include <mach/platform.h>
+
+#include <asm/uaccess.h>
+
+
+#define DRIVER_NAME BCM_VCIO_DRIVER_NAME
+
+/* ----------------------------------------------------------------------
+ *	Mailbox
+ * -------------------------------------------------------------------- */
+
+/* offsets from a mail box base address */
+#define MAIL_WRT	0x00	/* write - and next 4 words */
+#define MAIL_RD		0x00	/* read - and next 4 words */
+#define MAIL_POL	0x10	/* read without popping the fifo */
+#define MAIL_SND	0x14	/* sender ID (bottom two bits) */
+#define MAIL_STA	0x18	/* status */
+#define MAIL_CNF	0x1C	/* configuration */
+
+#define MBOX_MSG(chan, data28)		(((data28) & ~0xf) | ((chan) & 0xf))
+#define MBOX_MSG_LSB(chan, data28) (((data28) << 4) | ((chan) & 0xf))
+#define MBOX_CHAN(msg)			((msg) & 0xf)
+#define MBOX_DATA28(msg)		((msg) & ~0xf)
+#define MBOX_DATA28_LSB(msg)		(((uint32_t)msg) >> 4)
+
+#define MBOX_MAGIC 0xd0d0c0de
+static struct class *vcio_class = NULL;
+struct vc_mailbox {
+	struct device *dev;	/* parent device */
+	void __iomem *status;
+	void __iomem *config;
+	void __iomem *read;
+	void __iomem *write;
+	uint32_t msg[MBOX_CHAN_COUNT];
+	struct semaphore sema[MBOX_CHAN_COUNT];
+	uint32_t magic;
+};
+
+static void mbox_init(struct vc_mailbox *mbox_out, struct device *dev,
+		      uint32_t addr_mbox)
+{
+	int i;
+
+	mbox_out->dev = dev;
+	mbox_out->status = __io_address(addr_mbox + MAIL_STA);
+	mbox_out->config = __io_address(addr_mbox + MAIL_CNF);
+	mbox_out->read = __io_address(addr_mbox + MAIL_RD);
+	/* Write to the other mailbox */
+	mbox_out->write =
+	    __io_address((addr_mbox ^ ARM_0_MAIL0_WRT ^ ARM_0_MAIL1_WRT) +
+			 MAIL_WRT);
+
+	for (i = 0; i < MBOX_CHAN_COUNT; i++) {
+		mbox_out->msg[i] = 0;
+		sema_init(&mbox_out->sema[i], 0);
+	}
+
+	/* Enable the interrupt on data reception */
+	writel(ARM_MC_IHAVEDATAIRQEN, mbox_out->config);
+
+	mbox_out->magic = MBOX_MAGIC;
+}
+
+static int mbox_write(struct vc_mailbox *mbox, unsigned chan, uint32_t data28)
+{
+	int rc;
+
+	if (mbox->magic != MBOX_MAGIC)
+		rc = -EINVAL;
+	else {
+		/* wait for the mailbox FIFO to have some space in it */
+		while (0 != (readl(mbox->status) & ARM_MS_FULL))
+			cpu_relax();
+
+		writel(MBOX_MSG(chan, data28), mbox->write);
+		rc = 0;
+	}
+	return rc;
+}
+
+static int mbox_read(struct vc_mailbox *mbox, unsigned chan, uint32_t *data28)
+{
+	int rc;
+
+	if (mbox->magic != MBOX_MAGIC)
+		rc = -EINVAL;
+	else {
+		down(&mbox->sema[chan]);
+		*data28 = MBOX_DATA28(mbox->msg[chan]);
+		mbox->msg[chan] = 0;
+		rc = 0;
+	}
+	return rc;
+}
+
+static irqreturn_t mbox_irq(int irq, void *dev_id)
+{
+	/* wait for the mailbox FIFO to have some data in it */
+	struct vc_mailbox *mbox = (struct vc_mailbox *) dev_id;
+	int status = readl(mbox->status);
+	int ret = IRQ_NONE;
+
+	while (!(status & ARM_MS_EMPTY)) {
+		uint32_t msg = readl(mbox->read);
+		int chan = MBOX_CHAN(msg);
+		if (chan < MBOX_CHAN_COUNT) {
+			if (mbox->msg[chan]) {
+				/* Overflow */
+				printk(KERN_ERR DRIVER_NAME
+				       ": mbox chan %d overflow - drop %08x\n",
+				       chan, msg);
+			} else {
+				mbox->msg[chan] = (msg | 0xf);
+				up(&mbox->sema[chan]);
+			}
+		} else {
+			printk(KERN_ERR DRIVER_NAME
+			       ": invalid channel selector (msg %08x)\n", msg);
+		}
+		ret = IRQ_HANDLED;
+		status = readl(mbox->status);
+	}
+	return ret;
+}
+
+static struct irqaction mbox_irqaction = {
+	.name = "ARM Mailbox IRQ",
+	.flags = IRQF_DISABLED | IRQF_IRQPOLL,
+	.handler = mbox_irq,
+};
+
+/* ----------------------------------------------------------------------
+ *	Mailbox Methods
+ * -------------------------------------------------------------------- */
+
+static struct device *mbox_dev;	/* we assume there's only one! */
+
+static int dev_mbox_write(struct device *dev, unsigned chan, uint32_t data28)
+{
+	int rc;
+
+	struct vc_mailbox *mailbox = dev_get_drvdata(dev);
+	device_lock(dev);
+	rc = mbox_write(mailbox, chan, data28);
+	device_unlock(dev);
+
+	return rc;
+}
+
+static int dev_mbox_read(struct device *dev, unsigned chan, uint32_t *data28)
+{
+	int rc;
+
+	struct vc_mailbox *mailbox = dev_get_drvdata(dev);
+	device_lock(dev);
+	rc = mbox_read(mailbox, chan, data28);
+	device_unlock(dev);
+
+	return rc;
+}
+
+extern int bcm_mailbox_write(unsigned chan, uint32_t data28)
+{
+	if (mbox_dev)
+		return dev_mbox_write(mbox_dev, chan, data28);
+	else
+		return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(bcm_mailbox_write);
+
+extern int bcm_mailbox_read(unsigned chan, uint32_t *data28)
+{
+	if (mbox_dev)
+		return dev_mbox_read(mbox_dev, chan, data28);
+	else
+		return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(bcm_mailbox_read);
+
+static void dev_mbox_register(const char *dev_name, struct device *dev)
+{
+	mbox_dev = dev;
+}
+
+static int mbox_copy_from_user(void *dst, const void *src, int size)
+{
+	if ( (uint32_t)src < TASK_SIZE)
+	{
+		return copy_from_user(dst, src, size);
+	}
+	else
+	{
+		memcpy( dst, src, size );
+		return 0;
+	}
+}
+
+static int mbox_copy_to_user(void *dst, const void *src, int size)
+{
+	if ( (uint32_t)dst < TASK_SIZE)
+	{
+		return copy_to_user(dst, src, size);
+	}
+	else
+	{
+		memcpy( dst, src, size );
+		return 0;
+	}
+}
+
+static DEFINE_MUTEX(mailbox_lock);
+extern int bcm_mailbox_property(void *data, int size)
+{
+	uint32_t success;
+	dma_addr_t mem_bus;				/* the memory address accessed from videocore */
+	void *mem_kern;					/* the memory address accessed from driver */
+	int s = 0;
+
+        mutex_lock(&mailbox_lock);
+	/* allocate some memory for the messages communicating with GPU */
+	mem_kern = dma_alloc_coherent(NULL, PAGE_ALIGN(size), &mem_bus, GFP_ATOMIC);
+	if (mem_kern) {
+		/* create the message */
+		mbox_copy_from_user(mem_kern, data, size);
+
+		/* send the message */
+		wmb();
+		s = bcm_mailbox_write(MBOX_CHAN_PROPERTY, (uint32_t)mem_bus);
+		if (s == 0) {
+			s = bcm_mailbox_read(MBOX_CHAN_PROPERTY, &success);
+		}
+		if (s == 0) {
+			/* copy the response */
+			rmb();
+			mbox_copy_to_user(data, mem_kern, size);
+		}
+		dma_free_coherent(NULL, PAGE_ALIGN(size), mem_kern, mem_bus);
+	} else {
+		s = -ENOMEM;
+	}
+	if (s != 0)
+		printk(KERN_ERR DRIVER_NAME ": %s failed (%d)\n", __func__, s);
+
+        mutex_unlock(&mailbox_lock);
+	return s;
+}
+EXPORT_SYMBOL_GPL(bcm_mailbox_property);
+
+/* ----------------------------------------------------------------------
+ *	Platform Device for Mailbox
+ * -------------------------------------------------------------------- */
+
+/*
+ * Is the device open right now? Used to prevent
+ * concurent access into the same device
+ */
+static int Device_Open = 0;
+
+/*
+ * This is called whenever a process attempts to open the device file
+ */
+static int device_open(struct inode *inode, struct file *file)
+{
+	/*
+	 * We don't want to talk to two processes at the same time
+	 */
+	if (Device_Open)
+		return -EBUSY;
+
+	Device_Open++;
+	/*
+	 * Initialize the message
+	 */
+	try_module_get(THIS_MODULE);
+	return 0;
+}
+
+static int device_release(struct inode *inode, struct file *file)
+{
+	/*
+	 * We're now ready for our next caller
+	 */
+	Device_Open--;
+
+	module_put(THIS_MODULE);
+	return 0;
+}
+
+/*
+ * This function is called whenever a process tries to do an ioctl on our
+ * device file. We get two extra parameters (additional to the inode and file
+ * structures, which all device functions get): the number of the ioctl called
+ * and the parameter given to the ioctl function.
+ *
+ * If the ioctl is write or read/write (meaning output is returned to the
+ * calling process), the ioctl call returns the output of this function.
+ *
+ */
+static long device_ioctl(struct file *file,	/* see include/linux/fs.h */
+		 unsigned int ioctl_num,	/* number and param for ioctl */
+		 unsigned long ioctl_param)
+{
+	unsigned size;
+	/*
+	 * Switch according to the ioctl called
+	 */
+	switch (ioctl_num) {
+	case IOCTL_MBOX_PROPERTY:
+		/*
+		 * Receive a pointer to a message (in user space) and set that
+		 * to be the device's message.  Get the parameter given to
+		 * ioctl by the process.
+		 */
+		mbox_copy_from_user(&size, (void *)ioctl_param, sizeof size);
+		return bcm_mailbox_property((void *)ioctl_param, size);
+		break;
+	default:
+		printk(KERN_ERR DRIVER_NAME "unknown ioctl: %d\n", ioctl_num);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Module Declarations */
+
+/*
+ * This structure will hold the functions to be called
+ * when a process does something to the device we
+ * created. Since a pointer to this structure is kept in
+ * the devices table, it can't be local to
+ * init_module. NULL is for unimplemented functios.
+ */
+struct file_operations fops = {
+	.unlocked_ioctl = device_ioctl,
+	.open = device_open,
+	.release = device_release,	/* a.k.a. close */
+};
+
+static int bcm_vcio_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	struct vc_mailbox *mailbox;
+
+	mailbox = kzalloc(sizeof(*mailbox), GFP_KERNEL);
+	if (NULL == mailbox) {
+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
+		       "mailbox memory\n");
+		ret = -ENOMEM;
+	} else {
+		struct resource *res;
+
+		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		if (res == NULL) {
+			printk(KERN_ERR DRIVER_NAME ": failed to obtain memory "
+			       "resource\n");
+			ret = -ENODEV;
+			kfree(mailbox);
+		} else {
+			/* should be based on the registers from res really */
+			mbox_init(mailbox, &pdev->dev, ARM_0_MAIL0_RD);
+
+			platform_set_drvdata(pdev, mailbox);
+			dev_mbox_register(DRIVER_NAME, &pdev->dev);
+
+			mbox_irqaction.dev_id = mailbox;
+			setup_irq(IRQ_ARM_MAILBOX, &mbox_irqaction);
+			printk(KERN_INFO DRIVER_NAME ": mailbox at %p\n",
+			       __io_address(ARM_0_MAIL0_RD));
+		}
+	}
+
+	if (ret == 0) {
+		/*
+		 * Register the character device
+		 */
+		ret = register_chrdev(MAJOR_NUM, DEVICE_FILE_NAME, &fops);
+
+		/*
+		 * Negative values signify an error
+		 */
+		if (ret < 0) {
+			printk(KERN_ERR DRIVER_NAME
+			       "Failed registering the character device %d\n", ret);
+			return ret;
+		}
+		vcio_class = class_create(THIS_MODULE, BCM_VCIO_DRIVER_NAME);
+		if (IS_ERR(vcio_class)) {
+		    ret = PTR_ERR(vcio_class);
+		   return ret ;
+		}
+		device_create(vcio_class, NULL, MKDEV(MAJOR_NUM, 0), NULL,
+                      "vcio");
+	}
+	return ret;
+}
+
+static int bcm_vcio_remove(struct platform_device *pdev)
+{
+	struct vc_mailbox *mailbox = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	kfree(mailbox);
+
+	return 0;
+}
+
+static struct platform_driver bcm_mbox_driver = {
+	.probe = bcm_vcio_probe,
+	.remove = bcm_vcio_remove,
+
+	.driver = {
+		   .name = DRIVER_NAME,
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static int __init bcm_mbox_init(void)
+{
+	int ret;
+
+	printk(KERN_INFO "mailbox: Broadcom VideoCore Mailbox driver\n");
+
+	ret = platform_driver_register(&bcm_mbox_driver);
+	if (ret != 0) {
+		printk(KERN_ERR DRIVER_NAME ": failed to register "
+		       "on platform\n");
+	}
+
+	return ret;
+}
+
+static void __exit bcm_mbox_exit(void)
+{
+	device_destroy(vcio_class,MKDEV(MAJOR_NUM, 0));
+	class_destroy(vcio_class);
+	unregister_chrdev(MAJOR_NUM, DEVICE_FILE_NAME);
+	platform_driver_unregister(&bcm_mbox_driver);
+}
+
+arch_initcall(bcm_mbox_init);	/* Initialize early */
+module_exit(bcm_mbox_exit);
+
+MODULE_AUTHOR("Gray Girling");
+MODULE_DESCRIPTION("ARM I/O to VideoCore processor");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bcm-mbox");
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/vc_mem.c linux-rpi/arch/arm/mach-bcm2709/vc_mem.c
--- linux-3.18.10/arch/arm/mach-bcm2709/vc_mem.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/vc_mem.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,431 @@
+/*****************************************************************************
+* Copyright 2010 - 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/cdev.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <asm/uaccess.h>
+#include <linux/dma-mapping.h>
+
+#ifdef CONFIG_ARCH_KONA
+#include <chal/chal_ipc.h>
+#elif defined(CONFIG_ARCH_BCM2708) || defined(CONFIG_ARCH_BCM2709)
+#else
+#include <csp/chal_ipc.h>
+#endif
+
+#include "mach/vc_mem.h"
+#include <mach/vcio.h>
+
+#define DRIVER_NAME  "vc-mem"
+
+// Device (/dev) related variables
+static dev_t vc_mem_devnum = 0;
+static struct class *vc_mem_class = NULL;
+static struct cdev vc_mem_cdev;
+static int vc_mem_inited = 0;
+
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *vc_mem_debugfs_entry;
+#endif
+
+/*
+ * Videocore memory addresses and size
+ *
+ * Drivers that wish to know the videocore memory addresses and sizes should
+ * use these variables instead of the MM_IO_BASE and MM_ADDR_IO defines in
+ * headers. This allows the other drivers to not be tied down to a a certain
+ * address/size at compile time.
+ *
+ * In the future, the goal is to have the videocore memory virtual address and
+ * size be calculated at boot time rather than at compile time. The decision of
+ * where the videocore memory resides and its size would be in the hands of the
+ * bootloader (and/or kernel). When that happens, the values of these variables
+ * would be calculated and assigned in the init function.
+ */
+// in the 2835 VC in mapped above ARM, but ARM has full access to VC space
+unsigned long mm_vc_mem_phys_addr = 0x00000000;
+unsigned int mm_vc_mem_size = 0;
+unsigned int mm_vc_mem_base = 0;
+
+EXPORT_SYMBOL(mm_vc_mem_phys_addr);
+EXPORT_SYMBOL(mm_vc_mem_size);
+EXPORT_SYMBOL(mm_vc_mem_base);
+
+static uint phys_addr = 0;
+static uint mem_size = 0;
+static uint mem_base = 0;
+
+
+/****************************************************************************
+*
+*   vc_mem_open
+*
+***************************************************************************/
+
+static int
+vc_mem_open(struct inode *inode, struct file *file)
+{
+	(void) inode;
+	(void) file;
+
+	pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vc_mem_release
+*
+***************************************************************************/
+
+static int
+vc_mem_release(struct inode *inode, struct file *file)
+{
+	(void) inode;
+	(void) file;
+
+	pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vc_mem_get_size
+*
+***************************************************************************/
+
+static void
+vc_mem_get_size(void)
+{
+}
+
+/****************************************************************************
+*
+*   vc_mem_get_base
+*
+***************************************************************************/
+
+static void
+vc_mem_get_base(void)
+{
+}
+
+/****************************************************************************
+*
+*   vc_mem_get_current_size
+*
+***************************************************************************/
+
+int
+vc_mem_get_current_size(void)
+{
+	return mm_vc_mem_size;
+}
+
+EXPORT_SYMBOL_GPL(vc_mem_get_current_size);
+
+/****************************************************************************
+*
+*   vc_mem_ioctl
+*
+***************************************************************************/
+
+static long
+vc_mem_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	int rc = 0;
+
+	(void) cmd;
+	(void) arg;
+
+	pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+	switch (cmd) {
+	case VC_MEM_IOC_MEM_PHYS_ADDR:
+		{
+			pr_debug("%s: VC_MEM_IOC_MEM_PHYS_ADDR=0x%p\n",
+				__func__, (void *) mm_vc_mem_phys_addr);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_phys_addr,
+					 sizeof (mm_vc_mem_phys_addr)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	case VC_MEM_IOC_MEM_SIZE:
+		{
+			// Get the videocore memory size first
+			vc_mem_get_size();
+
+			pr_debug("%s: VC_MEM_IOC_MEM_SIZE=%u\n", __func__,
+				mm_vc_mem_size);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_size,
+					 sizeof (mm_vc_mem_size)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	case VC_MEM_IOC_MEM_BASE:
+		{
+			// Get the videocore memory base
+			vc_mem_get_base();
+
+			pr_debug("%s: VC_MEM_IOC_MEM_BASE=%u\n", __func__,
+				mm_vc_mem_base);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_base,
+					 sizeof (mm_vc_mem_base)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	case VC_MEM_IOC_MEM_LOAD:
+		{
+			// Get the videocore memory base
+			vc_mem_get_base();
+
+			pr_debug("%s: VC_MEM_IOC_MEM_LOAD=%u\n", __func__,
+				mm_vc_mem_base);
+
+			if (copy_to_user((void *) arg, &mm_vc_mem_base,
+					 sizeof (mm_vc_mem_base)) != 0) {
+				rc = -EFAULT;
+			}
+			break;
+		}
+	default:
+		{
+			return -ENOTTY;
+		}
+	}
+	pr_debug("%s: file = 0x%p returning %d\n", __func__, file, rc);
+
+	return rc;
+}
+
+/****************************************************************************
+*
+*   vc_mem_mmap
+*
+***************************************************************************/
+
+static int
+vc_mem_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+	int rc = 0;
+	unsigned long length = vma->vm_end - vma->vm_start;
+	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+
+	pr_debug("%s: vm_start = 0x%08lx vm_end = 0x%08lx vm_pgoff = 0x%08lx\n",
+		__func__, (long) vma->vm_start, (long) vma->vm_end,
+		(long) vma->vm_pgoff);
+
+	if (offset + length > mm_vc_mem_size) {
+		pr_err("%s: length %ld is too big\n", __func__, length);
+		return -EINVAL;
+	}
+	// Do not cache the memory map
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+	rc = remap_pfn_range(vma, vma->vm_start,
+			     (mm_vc_mem_phys_addr >> PAGE_SHIFT) +
+			     vma->vm_pgoff, length, vma->vm_page_prot);
+	if (rc != 0) {
+		pr_err("%s: remap_pfn_range failed (rc=%d)\n", __func__, rc);
+	}
+
+	return rc;
+}
+
+/****************************************************************************
+*
+*   File Operations for the driver.
+*
+***************************************************************************/
+
+static const struct file_operations vc_mem_fops = {
+	.owner = THIS_MODULE,
+	.open = vc_mem_open,
+	.release = vc_mem_release,
+	.unlocked_ioctl = vc_mem_ioctl,
+	.mmap = vc_mem_mmap,
+};
+
+#ifdef CONFIG_DEBUG_FS
+static void vc_mem_debugfs_deinit(void)
+{
+	debugfs_remove_recursive(vc_mem_debugfs_entry);
+	vc_mem_debugfs_entry = NULL;
+}
+
+
+static int vc_mem_debugfs_init(
+	struct device *dev)
+{
+	vc_mem_debugfs_entry = debugfs_create_dir(DRIVER_NAME, NULL);
+	if (!vc_mem_debugfs_entry) {
+		dev_warn(dev, "could not create debugfs entry\n");
+		return -EFAULT;
+	}
+
+	if (!debugfs_create_x32("vc_mem_phys_addr",
+				0444,
+				vc_mem_debugfs_entry,
+				(u32 *)&mm_vc_mem_phys_addr)) {
+		dev_warn(dev, "%s:could not create vc_mem_phys entry\n",
+			__func__);
+		goto fail;
+	}
+
+	if (!debugfs_create_x32("vc_mem_size",
+				0444,
+				vc_mem_debugfs_entry,
+				(u32 *)&mm_vc_mem_size)) {
+		dev_warn(dev, "%s:could not create vc_mem_size entry\n",
+			__func__);
+		goto fail;
+	}
+
+	if (!debugfs_create_x32("vc_mem_base",
+				0444,
+				vc_mem_debugfs_entry,
+				(u32 *)&mm_vc_mem_base)) {
+		dev_warn(dev, "%s:could not create vc_mem_base entry\n",
+			 __func__);
+		goto fail;
+	}
+
+	return 0;
+
+fail:
+	vc_mem_debugfs_deinit();
+	return -EFAULT;
+}
+
+#endif /* CONFIG_DEBUG_FS */
+
+
+/****************************************************************************
+*
+*   vc_mem_init
+*
+***************************************************************************/
+
+static int __init
+vc_mem_init(void)
+{
+	int rc = -EFAULT;
+	struct device *dev;
+
+	pr_debug("%s: called\n", __func__);
+
+	mm_vc_mem_phys_addr = phys_addr;
+	mm_vc_mem_size = mem_size;
+	mm_vc_mem_base = mem_base;
+
+	vc_mem_get_size();
+
+	pr_info("vc-mem: phys_addr:0x%08lx mem_base=0x%08x mem_size:0x%08x(%u MiB)\n",
+		mm_vc_mem_phys_addr, mm_vc_mem_base, mm_vc_mem_size, mm_vc_mem_size / (1024 * 1024));
+
+	if ((rc = alloc_chrdev_region(&vc_mem_devnum, 0, 1, DRIVER_NAME)) < 0) {
+		pr_err("%s: alloc_chrdev_region failed (rc=%d)\n",
+		       __func__, rc);
+		goto out_err;
+	}
+
+	cdev_init(&vc_mem_cdev, &vc_mem_fops);
+	if ((rc = cdev_add(&vc_mem_cdev, vc_mem_devnum, 1)) != 0) {
+		pr_err("%s: cdev_add failed (rc=%d)\n", __func__, rc);
+		goto out_unregister;
+	}
+
+	vc_mem_class = class_create(THIS_MODULE, DRIVER_NAME);
+	if (IS_ERR(vc_mem_class)) {
+		rc = PTR_ERR(vc_mem_class);
+		pr_err("%s: class_create failed (rc=%d)\n", __func__, rc);
+		goto out_cdev_del;
+	}
+
+	dev = device_create(vc_mem_class, NULL, vc_mem_devnum, NULL,
+			    DRIVER_NAME);
+	if (IS_ERR(dev)) {
+		rc = PTR_ERR(dev);
+		pr_err("%s: device_create failed (rc=%d)\n", __func__, rc);
+		goto out_class_destroy;
+	}
+
+#ifdef CONFIG_DEBUG_FS
+	/* don't fail if the debug entries cannot be created */
+	vc_mem_debugfs_init(dev);
+#endif
+
+	vc_mem_inited = 1;
+	return 0;
+
+	device_destroy(vc_mem_class, vc_mem_devnum);
+
+      out_class_destroy:
+	class_destroy(vc_mem_class);
+	vc_mem_class = NULL;
+
+      out_cdev_del:
+	cdev_del(&vc_mem_cdev);
+
+      out_unregister:
+	unregister_chrdev_region(vc_mem_devnum, 1);
+
+      out_err:
+	return -1;
+}
+
+/****************************************************************************
+*
+*   vc_mem_exit
+*
+***************************************************************************/
+
+static void __exit
+vc_mem_exit(void)
+{
+	pr_debug("%s: called\n", __func__);
+
+	if (vc_mem_inited) {
+#if CONFIG_DEBUG_FS
+		vc_mem_debugfs_deinit();
+#endif
+		device_destroy(vc_mem_class, vc_mem_devnum);
+		class_destroy(vc_mem_class);
+		cdev_del(&vc_mem_cdev);
+		unregister_chrdev_region(vc_mem_devnum, 1);
+	}
+}
+
+module_init(vc_mem_init);
+module_exit(vc_mem_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Broadcom Corporation");
+
+module_param(phys_addr, uint, 0644);
+module_param(mem_size, uint, 0644);
+module_param(mem_base, uint, 0644);
diff -Nur linux-3.18.10/arch/arm/mach-bcm2709/vc_support.c linux-rpi/arch/arm/mach-bcm2709/vc_support.c
--- linux-3.18.10/arch/arm/mach-bcm2709/vc_support.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/arch/arm/mach-bcm2709/vc_support.c	2015-03-26 11:46:41.772226586 +0100
@@ -0,0 +1,318 @@
+/*
+ * vc_support.c
+ *
+ *  Created on: 25 Nov 2012
+ *      Author: Simon
+ */
+
+#include <linux/module.h>
+#include <mach/vcio.h>
+
+#ifdef ECLIPSE_IGNORE
+
+#define __user
+#define __init
+#define __exit
+#define __iomem
+#define KERN_DEBUG
+#define KERN_ERR
+#define KERN_WARNING
+#define KERN_INFO
+#define _IOWR(a, b, c) b
+#define _IOW(a, b, c) b
+#define _IO(a, b) b
+
+#endif
+
+/****** VC MAILBOX FUNCTIONALITY ******/
+unsigned int AllocateVcMemory(unsigned int *pHandle, unsigned int size, unsigned int alignment, unsigned int flags)
+{
+	struct vc_msg
+	{
+		unsigned int m_msgSize;
+		unsigned int m_response;
+
+		struct vc_tag
+		{
+			unsigned int m_tagId;
+			unsigned int m_sendBufferSize;
+			union {
+				unsigned int m_sendDataSize;
+				unsigned int m_recvDataSize;
+			};
+
+			struct args
+			{
+				union {
+					unsigned int m_size;
+					unsigned int m_handle;
+				};
+				unsigned int m_alignment;
+				unsigned int m_flags;
+			} m_args;
+		} m_tag;
+
+		unsigned int m_endTag;
+	} msg;
+	int s;
+
+	msg.m_msgSize = sizeof(msg);
+	msg.m_response = 0;
+	msg.m_endTag = 0;
+
+	//fill in the tag for the allocation command
+	msg.m_tag.m_tagId = 0x3000c;
+	msg.m_tag.m_sendBufferSize = 12;
+	msg.m_tag.m_sendDataSize = 12;
+
+	//fill in our args
+	msg.m_tag.m_args.m_size = size;
+	msg.m_tag.m_args.m_alignment = alignment;
+	msg.m_tag.m_args.m_flags = flags;
+
+	//run the command
+	s = bcm_mailbox_property(&msg, sizeof(msg));
+
+	if (s == 0 && msg.m_response == 0x80000000 && msg.m_tag.m_recvDataSize == 0x80000004)
+	{
+		*pHandle = msg.m_tag.m_args.m_handle;
+		return 0;
+	}
+	else
+	{
+		printk(KERN_ERR "failed to allocate vc memory: s=%d response=%08x recv data size=%08x\n",
+				s, msg.m_response, msg.m_tag.m_recvDataSize);
+		return 1;
+	}
+}
+
+unsigned int ReleaseVcMemory(unsigned int handle)
+{
+	struct vc_msg
+	{
+		unsigned int m_msgSize;
+		unsigned int m_response;
+
+		struct vc_tag
+		{
+			unsigned int m_tagId;
+			unsigned int m_sendBufferSize;
+			union {
+				unsigned int m_sendDataSize;
+				unsigned int m_recvDataSize;
+			};
+
+			struct args
+			{
+				union {
+					unsigned int m_handle;
+					unsigned int m_error;
+				};
+			} m_args;
+		} m_tag;
+
+		unsigned int m_endTag;
+	} msg;
+	int s;
+
+	msg.m_msgSize = sizeof(msg);
+	msg.m_response = 0;
+	msg.m_endTag = 0;
+
+	//fill in the tag for the release command
+	msg.m_tag.m_tagId = 0x3000f;
+	msg.m_tag.m_sendBufferSize = 4;
+	msg.m_tag.m_sendDataSize = 4;
+
+	//pass across the handle
+	msg.m_tag.m_args.m_handle = handle;
+
+	s = bcm_mailbox_property(&msg, sizeof(msg));
+
+	if (s == 0 && msg.m_response == 0x80000000 && msg.m_tag.m_recvDataSize == 0x80000004 && msg.m_tag.m_args.m_error == 0)
+		return 0;
+	else
+	{
+		printk(KERN_ERR "failed to release vc memory: s=%d response=%08x recv data size=%08x error=%08x\n",
+				s, msg.m_response, msg.m_tag.m_recvDataSize, msg.m_tag.m_args.m_error);
+		return 1;
+	}
+}
+
+unsigned int LockVcMemory(unsigned int *pBusAddress, unsigned int handle)
+{
+	struct vc_msg
+	{
+		unsigned int m_msgSize;
+		unsigned int m_response;
+
+		struct vc_tag
+		{
+			unsigned int m_tagId;
+			unsigned int m_sendBufferSize;
+			union {
+				unsigned int m_sendDataSize;
+				unsigned int m_recvDataSize;
+			};
+
+			struct args
+			{
+				union {
+					unsigned int m_handle;
+					unsigned int m_busAddress;
+				};
+			} m_args;
+		} m_tag;
+
+		unsigned int m_endTag;
+	} msg;
+	int s;
+
+	msg.m_msgSize = sizeof(msg);
+	msg.m_response = 0;
+	msg.m_endTag = 0;
+
+	//fill in the tag for the lock command
+	msg.m_tag.m_tagId = 0x3000d;
+	msg.m_tag.m_sendBufferSize = 4;
+	msg.m_tag.m_sendDataSize = 4;
+
+	//pass across the handle
+	msg.m_tag.m_args.m_handle = handle;
+
+	s = bcm_mailbox_property(&msg, sizeof(msg));
+
+	if (s == 0 && msg.m_response == 0x80000000 && msg.m_tag.m_recvDataSize == 0x80000004)
+	{
+		//pick out the bus address
+		*pBusAddress = msg.m_tag.m_args.m_busAddress;
+		return 0;
+	}
+	else
+	{
+		printk(KERN_ERR "failed to lock vc memory: s=%d response=%08x recv data size=%08x\n",
+				s, msg.m_response, msg.m_tag.m_recvDataSize);
+		return 1;
+	}
+}
+
+unsigned int UnlockVcMemory(unsigned int handle)
+{
+	struct vc_msg
+	{
+		unsigned int m_msgSize;
+		unsigned int m_response;
+
+		struct vc_tag
+		{
+			unsigned int m_tagId;
+			unsigned int m_sendBufferSize;
+			union {
+				unsigned int m_sendDataSize;
+				unsigned int m_recvDataSize;
+			};
+
+			struct args
+			{
+				union {
+					unsigned int m_handle;
+					unsigned int m_error;
+				};
+			} m_args;
+		} m_tag;
+
+		unsigned int m_endTag;
+	} msg;
+	int s;
+
+	msg.m_msgSize = sizeof(msg);
+	msg.m_response = 0;
+	msg.m_endTag = 0;
+
+	//fill in the tag for the unlock command
+	msg.m_tag.m_tagId = 0x3000e;
+	msg.m_tag.m_sendBufferSize = 4;
+	msg.m_tag.m_sendDataSize = 4;
+
+	//pass across the handle
+	msg.m_tag.m_args.m_handle = handle;
+
+	s = bcm_mailbox_property(&msg, sizeof(msg));
+
+	//check the error code too
+	if (s == 0 && msg.m_response == 0x80000000 && msg.m_tag.m_recvDataSize == 0x80000004 && msg.m_tag.m_args.m_error == 0)
+		return 0;
+	else
+	{
+		printk(KERN_ERR "failed to unlock vc memory: s=%d response=%08x recv data size=%08x error%08x\n",
+				s, msg.m_response, msg.m_tag.m_recvDataSize, msg.m_tag.m_args.m_error);
+		return 1;
+	}
+}
+
+unsigned int ExecuteVcCode(unsigned int code,
+		unsigned int r0, unsigned int r1, unsigned int r2, unsigned int r3, unsigned int r4, unsigned int r5)
+{
+	struct vc_msg
+	{
+		unsigned int m_msgSize;
+		unsigned int m_response;
+
+		struct vc_tag
+		{
+			unsigned int m_tagId;
+			unsigned int m_sendBufferSize;
+			union {
+				unsigned int m_sendDataSize;
+				unsigned int m_recvDataSize;
+			};
+
+			struct args
+			{
+				union {
+					unsigned int m_pCode;
+					unsigned int m_return;
+				};
+				unsigned int m_r0;
+				unsigned int m_r1;
+				unsigned int m_r2;
+				unsigned int m_r3;
+				unsigned int m_r4;
+				unsigned int m_r5;
+			} m_args;
+		} m_tag;
+
+		unsigned int m_endTag;
+	} msg;
+	int s;
+
+	msg.m_msgSize = sizeof(msg);
+	msg.m_response = 0;
+	msg.m_endTag = 0;
+
+	//fill in the tag for the unlock command
+	msg.m_tag.m_tagId = 0x30010;
+	msg.m_tag.m_sendBufferSize = 28;
+	msg.m_tag.m_sendDataSize = 28;
+
+	//pass across the handle
+	msg.m_tag.m_args.m_pCode = code;
+	msg.m_tag.m_args.m_r0 = r0;
+	msg.m_tag.m_args.m_r1 = r1;
+	msg.m_tag.m_args.m_r2 = r2;
+	msg.m_tag.m_args.m_r3 = r3;
+	msg.m_tag.m_args.m_r4 = r4;
+	msg.m_tag.m_args.m_r5 = r5;
+
+	s = bcm_mailbox_property(&msg, sizeof(msg));
+
+	//check the error code too
+	if (s == 0 && msg.m_response == 0x80000000 && msg.m_tag.m_recvDataSize == 0x80000004)
+		return msg.m_tag.m_args.m_return;
+	else
+	{
+		printk(KERN_ERR "failed to execute: s=%d response=%08x recv data size=%08x\n",
+				s, msg.m_response, msg.m_tag.m_recvDataSize);
+		return 1;
+	}
+}
diff -Nur linux-3.18.10/arch/arm/Makefile linux-rpi/arch/arm/Makefile
--- linux-3.18.10/arch/arm/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/Makefile	2015-03-26 11:46:41.692226515 +0100
@@ -146,6 +146,8 @@
 machine-$(CONFIG_ARCH_AT91)		+= at91
 machine-$(CONFIG_ARCH_AXXIA)		+= axxia
 machine-$(CONFIG_ARCH_BCM)		+= bcm
+machine-$(CONFIG_ARCH_BCM2708)		+= bcm2708
+machine-$(CONFIG_ARCH_BCM2709)		+= bcm2709
 machine-$(CONFIG_ARCH_BERLIN)		+= berlin
 machine-$(CONFIG_ARCH_CLPS711X)		+= clps711x
 machine-$(CONFIG_ARCH_CNS3XXX)		+= cns3xxx
diff -Nur linux-3.18.10/arch/arm/mm/Kconfig linux-rpi/arch/arm/mm/Kconfig
--- linux-3.18.10/arch/arm/mm/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/mm/Kconfig	2015-03-26 11:46:42.112226903 +0100
@@ -358,7 +358,7 @@
 
 # ARMv6
 config CPU_V6
-	bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
+	bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX || MACH_BCM2708
 	select CPU_32v6
 	select CPU_ABRT_EV6
 	select CPU_CACHE_V6
diff -Nur linux-3.18.10/arch/arm/mm/proc-v6.S linux-rpi/arch/arm/mm/proc-v6.S
--- linux-3.18.10/arch/arm/mm/proc-v6.S	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/mm/proc-v6.S	2015-03-26 11:46:42.116226906 +0100
@@ -73,10 +73,19 @@
  *
  *	IRQs are already disabled.
  */
+
+/* See jira SW-5991 for details of this workaround */
 ENTRY(cpu_v6_do_idle)
-	mov	r1, #0
-	mcr	p15, 0, r1, c7, c10, 4		@ DWB - WFI may enter a low-power mode
-	mcr	p15, 0, r1, c7, c0, 4		@ wait for interrupt
+	.align 5
+	mov     r1, #2
+1:	subs	r1, #1
+	nop
+	mcreq	p15, 0, r1, c7, c10, 4		@ DWB - WFI may enter a low-power mode
+	mcreq	p15, 0, r1, c7, c0, 4		@ wait for interrupt
+	nop
+	nop
+	nop
+	bne 1b
 	ret	lr
 
 ENTRY(cpu_v6_dcache_clean_area)
diff -Nur linux-3.18.10/arch/arm/mm/proc-v7.S linux-rpi/arch/arm/mm/proc-v7.S
--- linux-3.18.10/arch/arm/mm/proc-v7.S	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/mm/proc-v7.S	2015-03-26 11:46:42.116226906 +0100
@@ -441,6 +441,7 @@
 	orr	r0, r0, r6			@ set them
  THUMB(	orr	r0, r0, #1 << 30	)	@ Thumb exceptions
 	ret	lr				@ return to head.S:__ret
+        .space 256
 ENDPROC(__v7_setup)
 
 	.align	2
diff -Nur linux-3.18.10/arch/arm/tools/mach-types linux-rpi/arch/arm/tools/mach-types
--- linux-3.18.10/arch/arm/tools/mach-types	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/arch/arm/tools/mach-types	2015-03-26 11:46:42.172226958 +0100
@@ -522,6 +522,8 @@
 prima2_evb		MACH_PRIMA2_EVB		PRIMA2_EVB		3103
 paz00			MACH_PAZ00		PAZ00			3128
 acmenetusfoxg20		MACH_ACMENETUSFOXG20	ACMENETUSFOXG20		3129
+bcm2708			MACH_BCM2708		BCM2708			3138
+bcm2709			MACH_BCM2709		BCM2709			3139
 ag5evm			MACH_AG5EVM		AG5EVM			3189
 ics_if_voip		MACH_ICS_IF_VOIP	ICS_IF_VOIP		3206
 wlf_cragg_6410		MACH_WLF_CRAGG_6410	WLF_CRAGG_6410		3207
diff -Nur linux-3.18.10/Documentation/sound/alsa/ControlNames.txt linux-rpi/Documentation/sound/alsa/ControlNames.txt
--- linux-3.18.10/Documentation/sound/alsa/ControlNames.txt	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/Documentation/sound/alsa/ControlNames.txt	2015-03-26 11:46:41.644226470 +0100
@@ -49,11 +49,11 @@
   IEC958
 
 Exceptions:
-  [Digital] Capture Source
-  [Digital] Capture Switch	(aka input gain switch)
-  [Digital] Capture Volume	(aka input gain volume)
-  [Digital] Playback Switch	(aka output gain switch)
-  [Digital] Playback Volume	(aka output gain volume)
+  [Analogue|Digital] Capture Source
+  [Analogue|Digital] Capture Switch	(aka input gain switch)
+  [Analogue|Digital] Capture Volume	(aka input gain volume)
+  [Analogue|Digital] Playback Switch	(aka output gain switch)
+  [Analogue|Digital] Playback Volume	(aka output gain volume)
   Tone Control - Switch
   Tone Control - Bass
   Tone Control - Treble
diff -Nur linux-3.18.10/Documentation/video4linux/bcm2835-v4l2.txt linux-rpi/Documentation/video4linux/bcm2835-v4l2.txt
--- linux-3.18.10/Documentation/video4linux/bcm2835-v4l2.txt	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/Documentation/video4linux/bcm2835-v4l2.txt	2015-03-26 11:46:41.656226478 +0100
@@ -0,0 +1,60 @@
+
+BCM2835 (aka Raspberry Pi) V4L2 driver
+======================================
+
+1. Copyright
+============
+
+Copyright © 2013 Raspberry Pi (Trading) Ltd.
+
+2. License
+==========
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+3. Quick Start
+==============
+
+You need a version 1.0 or later of v4l2-ctl, available from:
+	git://git.linuxtv.org/v4l-utils.git
+
+$ sudo modprobe bcm2835-v4l2
+
+Turn on the overlay:
+
+$ v4l2-ctl --overlay=1
+
+Turn off the overlay:
+
+$ v4l2-ctl --overlay=0
+
+Set the capture format for video:
+
+$ v4l2-ctl  --set-fmt-video=width=1920,height=1088,pixelformat=4
+
+(Note: 1088 not 1080).
+
+Capture:
+
+$ v4l2-ctl --stream-mmap=3 --stream-count=100 --stream-to=somefile.h264
+
+Stills capture:
+
+$ v4l2-ctl  --set-fmt-video=width=2592,height=1944,pixelformat=3
+$ v4l2-ctl --stream-mmap=3 --stream-count=1 --stream-to=somefile.jpg
+
+List of available formats:
+
+$ v4l2-ctl --list-formats
diff -Nur linux-3.18.10/drivers/char/broadcom/Kconfig linux-rpi/drivers/char/broadcom/Kconfig
--- linux-3.18.10/drivers/char/broadcom/Kconfig	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/char/broadcom/Kconfig	2015-03-26 11:46:46.136230632 +0100
@@ -0,0 +1,22 @@
+#
+# Broadcom char driver config
+#
+
+menuconfig BRCM_CHAR_DRIVERS
+	bool "Broadcom Char Drivers"
+	help
+	  Broadcom's char drivers
+
+config BCM_VC_CMA
+	bool "Videocore CMA"
+	depends on CMA && BRCM_CHAR_DRIVERS && BCM2708_VCHIQ
+	default n
+        help
+          Helper for videocore CMA access.
+
+config BCM_VC_SM
+	tristate "VMCS Shared Memory"
+	default n
+	help
+	Support for the VC shared memory on the Broadcom reference
+	design. Uses the VCHIQ stack.
diff -Nur linux-3.18.10/drivers/char/broadcom/Makefile linux-rpi/drivers/char/broadcom/Makefile
--- linux-3.18.10/drivers/char/broadcom/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/char/broadcom/Makefile	2015-03-26 11:46:46.136230632 +0100
@@ -0,0 +1,2 @@
+obj-$(CONFIG_BCM_VC_CMA)	+= vc_cma/
+obj-$(CONFIG_BCM_VC_SM)         += vc_sm/
diff -Nur linux-3.18.10/drivers/char/broadcom/vc_cma/Makefile linux-rpi/drivers/char/broadcom/vc_cma/Makefile
--- linux-3.18.10/drivers/char/broadcom/vc_cma/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/char/broadcom/vc_cma/Makefile	2015-03-26 11:46:46.136230632 +0100
@@ -0,0 +1,14 @@
+ccflags-y  += -Wall -Wstrict-prototypes -Wno-trigraphs
+ccflags-y  += -Werror
+ccflags-y  += -Iinclude/linux/broadcom
+ccflags-y  += -Idrivers/misc/vc04_services
+ccflags-y  += -Idrivers/misc/vc04_services/interface/vchi
+ccflags-y  += -Idrivers/misc/vc04_services/interface/vchiq_arm
+
+ccflags-y  += -D__KERNEL__
+ccflags-y  += -D__linux__
+ccflags-y  += -Werror
+
+obj-$(CONFIG_BCM_VC_CMA) += vc-cma.o
+
+vc-cma-objs := vc_cma.o
diff -Nur linux-3.18.10/drivers/char/broadcom/vc_cma/vc_cma.c linux-rpi/drivers/char/broadcom/vc_cma/vc_cma.c
--- linux-3.18.10/drivers/char/broadcom/vc_cma/vc_cma.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/char/broadcom/vc_cma/vc_cma.c	2015-03-26 11:46:46.136230632 +0100
@@ -0,0 +1,1193 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/kthread.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/cdev.h>
+#include <linux/mm.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/dma-mapping.h>
+#include <linux/dma-contiguous.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+#include <asm/cacheflush.h>
+
+#include "vc_cma.h"
+
+#include "vchiq_util.h"
+#include "vchiq_connected.h"
+//#include "debug_sym.h"
+//#include "vc_mem.h"
+
+#define DRIVER_NAME  "vc-cma"
+
+#define LOG_DBG(fmt, ...) \
+	if (vc_cma_debug) \
+		printk(KERN_INFO fmt "\n", ##__VA_ARGS__)
+#define LOG_INFO(fmt, ...) \
+	printk(KERN_INFO fmt "\n", ##__VA_ARGS__)
+#define LOG_ERR(fmt, ...) \
+	printk(KERN_ERR fmt "\n", ##__VA_ARGS__)
+
+#define VC_CMA_FOURCC VCHIQ_MAKE_FOURCC('C', 'M', 'A', ' ')
+#define VC_CMA_VERSION 2
+
+#define VC_CMA_CHUNK_ORDER 6	/* 256K */
+#define VC_CMA_CHUNK_SIZE (4096 << VC_CMA_CHUNK_ORDER)
+#define VC_CMA_MAX_PARAMS_PER_MSG \
+	((VCHIQ_MAX_MSG_SIZE - sizeof(unsigned short))/sizeof(unsigned short))
+#define VC_CMA_RESERVE_COUNT_MAX 16
+
+#define PAGES_PER_CHUNK (VC_CMA_CHUNK_SIZE / PAGE_SIZE)
+
+#define VCADDR_TO_PHYSADDR(vcaddr) (mm_vc_mem_phys_addr + vcaddr)
+
+#define loud_error(...) \
+	LOG_ERR("===== " __VA_ARGS__)
+
+enum {
+	VC_CMA_MSG_QUIT,
+	VC_CMA_MSG_OPEN,
+	VC_CMA_MSG_TICK,
+	VC_CMA_MSG_ALLOC,	/* chunk count */
+	VC_CMA_MSG_FREE,	/* chunk, chunk, ... */
+	VC_CMA_MSG_ALLOCATED,	/* chunk, chunk, ... */
+	VC_CMA_MSG_REQUEST_ALLOC,	/* chunk count */
+	VC_CMA_MSG_REQUEST_FREE,	/* chunk count */
+	VC_CMA_MSG_RESERVE,	/* bytes lo, bytes hi */
+	VC_CMA_MSG_UPDATE_RESERVE,
+	VC_CMA_MSG_MAX
+};
+
+struct cma_msg {
+	unsigned short type;
+	unsigned short params[VC_CMA_MAX_PARAMS_PER_MSG];
+};
+
+struct vc_cma_reserve_user {
+	unsigned int pid;
+	unsigned int reserve;
+};
+
+/* Device (/dev) related variables */
+static dev_t vc_cma_devnum;
+static struct class *vc_cma_class;
+static struct cdev vc_cma_cdev;
+static int vc_cma_inited;
+static int vc_cma_debug;
+
+/* Proc entry */
+static struct proc_dir_entry *vc_cma_proc_entry;
+
+phys_addr_t vc_cma_base;
+struct page *vc_cma_base_page;
+unsigned int vc_cma_size;
+EXPORT_SYMBOL(vc_cma_size);
+unsigned int vc_cma_initial;
+unsigned int vc_cma_chunks;
+unsigned int vc_cma_chunks_used;
+unsigned int vc_cma_chunks_reserved;
+
+
+void *vc_cma_dma_alloc;
+unsigned int vc_cma_dma_size;
+
+static int in_loud_error;
+
+unsigned int vc_cma_reserve_total;
+unsigned int vc_cma_reserve_count;
+struct vc_cma_reserve_user vc_cma_reserve_users[VC_CMA_RESERVE_COUNT_MAX];
+static DEFINE_SEMAPHORE(vc_cma_reserve_mutex);
+static DEFINE_SEMAPHORE(vc_cma_worker_queue_push_mutex);
+
+static u64 vc_cma_dma_mask = DMA_BIT_MASK(32);
+static struct platform_device vc_cma_device = {
+	.name = "vc-cma",
+	.id = 0,
+	.dev = {
+		.dma_mask = &vc_cma_dma_mask,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+		},
+};
+
+static VCHIQ_INSTANCE_T cma_instance;
+static VCHIQ_SERVICE_HANDLE_T cma_service;
+static VCHIU_QUEUE_T cma_msg_queue;
+static struct task_struct *cma_worker;
+
+static int vc_cma_set_reserve(unsigned int reserve, unsigned int pid);
+static int vc_cma_alloc_chunks(int num_chunks, struct cma_msg *reply);
+static VCHIQ_STATUS_T cma_service_callback(VCHIQ_REASON_T reason,
+					   VCHIQ_HEADER_T * header,
+					   VCHIQ_SERVICE_HANDLE_T service,
+					   void *bulk_userdata);
+static void send_vc_msg(unsigned short type,
+			unsigned short param1, unsigned short param2);
+static bool send_worker_msg(VCHIQ_HEADER_T * msg);
+
+static int early_vc_cma_mem(char *p)
+{
+	unsigned int new_size;
+	printk(KERN_NOTICE "early_vc_cma_mem(%s)", p);
+	vc_cma_size = memparse(p, &p);
+	vc_cma_initial = vc_cma_size;
+	if (*p == '/')
+		vc_cma_size = memparse(p + 1, &p);
+	if (*p == '@')
+		vc_cma_base = memparse(p + 1, &p);
+
+	new_size = (vc_cma_size - ((-vc_cma_base) & (VC_CMA_CHUNK_SIZE - 1)))
+	    & ~(VC_CMA_CHUNK_SIZE - 1);
+	if (new_size > vc_cma_size)
+		vc_cma_size = 0;
+	vc_cma_initial = (vc_cma_initial + VC_CMA_CHUNK_SIZE - 1)
+	    & ~(VC_CMA_CHUNK_SIZE - 1);
+	if (vc_cma_initial > vc_cma_size)
+		vc_cma_initial = vc_cma_size;
+	vc_cma_base = (vc_cma_base + VC_CMA_CHUNK_SIZE - 1)
+	    & ~(VC_CMA_CHUNK_SIZE - 1);
+
+	printk(KERN_NOTICE " -> initial %x, size %x, base %x", vc_cma_initial,
+	       vc_cma_size, (unsigned int)vc_cma_base);
+
+	return 0;
+}
+
+early_param("vc-cma-mem", early_vc_cma_mem);
+
+void vc_cma_early_init(void)
+{
+	LOG_DBG("vc_cma_early_init - vc_cma_chunks = %d", vc_cma_chunks);
+	if (vc_cma_size) {
+		int rc = platform_device_register(&vc_cma_device);
+		LOG_DBG("platform_device_register -> %d", rc);
+	}
+}
+
+void vc_cma_reserve(void)
+{
+	/* if vc_cma_size is set, then declare vc CMA area of the same
+	 * size from the end of memory
+	 */
+	if (vc_cma_size) {
+		if (dma_declare_contiguous(&vc_cma_device.dev, vc_cma_size,
+					   vc_cma_base, 0) == 0) {
+			if (!dev_get_cma_area(NULL)) {
+				/* There is no default CMA area - make this
+				   the default */
+				struct cma *vc_cma_area = dev_get_cma_area(
+					&vc_cma_device.dev);
+				dma_contiguous_set_default(vc_cma_area);
+				LOG_INFO("vc_cma_reserve - using vc_cma as "
+					 "the default contiguous DMA area");
+			}
+		} else {
+			LOG_ERR("vc_cma: dma_declare_contiguous(%x,%x) failed",
+				vc_cma_size, (unsigned int)vc_cma_base);
+			vc_cma_size = 0;
+		}
+	}
+	vc_cma_chunks = vc_cma_size / VC_CMA_CHUNK_SIZE;
+}
+
+/****************************************************************************
+*
+*   vc_cma_open
+*
+***************************************************************************/
+
+static int vc_cma_open(struct inode *inode, struct file *file)
+{
+	(void)inode;
+	(void)file;
+
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vc_cma_release
+*
+***************************************************************************/
+
+static int vc_cma_release(struct inode *inode, struct file *file)
+{
+	(void)inode;
+	(void)file;
+
+	vc_cma_set_reserve(0, current->tgid);
+
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vc_cma_ioctl
+*
+***************************************************************************/
+
+static long vc_cma_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	int rc = 0;
+
+	(void)cmd;
+	(void)arg;
+
+	switch (cmd) {
+	case VC_CMA_IOC_RESERVE:
+		rc = vc_cma_set_reserve((unsigned int)arg, current->tgid);
+		if (rc >= 0)
+			rc = 0;
+		break;
+	default:
+		LOG_ERR("vc-cma: Unknown ioctl %x", cmd);
+		return -ENOTTY;
+	}
+
+	return rc;
+}
+
+/****************************************************************************
+*
+*   File Operations for the driver.
+*
+***************************************************************************/
+
+static const struct file_operations vc_cma_fops = {
+	.owner = THIS_MODULE,
+	.open = vc_cma_open,
+	.release = vc_cma_release,
+	.unlocked_ioctl = vc_cma_ioctl,
+};
+
+/****************************************************************************
+*
+*   vc_cma_proc_open
+*
+***************************************************************************/
+
+static int vc_cma_show_info(struct seq_file *m, void *v)
+{
+	int i;
+
+	seq_printf(m, "Videocore CMA:\n");
+	seq_printf(m, "   Base       : %08x\n", (unsigned int)vc_cma_base);
+	seq_printf(m, "   Length     : %08x\n", vc_cma_size);
+	seq_printf(m, "   Initial    : %08x\n", vc_cma_initial);
+	seq_printf(m, "   Chunk size : %08x\n", VC_CMA_CHUNK_SIZE);
+	seq_printf(m, "   Chunks     : %4d (%d bytes)\n",
+		   (int)vc_cma_chunks,
+		   (int)(vc_cma_chunks * VC_CMA_CHUNK_SIZE));
+	seq_printf(m, "   Used       : %4d (%d bytes)\n",
+		   (int)vc_cma_chunks_used,
+		   (int)(vc_cma_chunks_used * VC_CMA_CHUNK_SIZE));
+	seq_printf(m, "   Reserved   : %4d (%d bytes)\n",
+		   (unsigned int)vc_cma_chunks_reserved,
+		   (int)(vc_cma_chunks_reserved * VC_CMA_CHUNK_SIZE));
+
+	for (i = 0; i < vc_cma_reserve_count; i++) {
+		struct vc_cma_reserve_user *user = &vc_cma_reserve_users[i];
+		seq_printf(m, "     PID %5d: %d bytes\n", user->pid,
+			   user->reserve);
+	}
+	seq_printf(m, "   dma_alloc  : %p (%d pages)\n",
+		   vc_cma_dma_alloc ? page_address(vc_cma_dma_alloc) : 0,
+		   vc_cma_dma_size);
+
+	seq_printf(m, "\n");
+
+	return 0;
+}
+
+static int vc_cma_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, vc_cma_show_info, NULL);
+}
+
+/****************************************************************************
+*
+*   vc_cma_proc_write
+*
+***************************************************************************/
+
+static int vc_cma_proc_write(struct file *file,
+			     const char __user *buffer,
+			     size_t size, loff_t *ppos)
+{
+	int rc = -EFAULT;
+	char input_str[20];
+
+	memset(input_str, 0, sizeof(input_str));
+
+	if (size > sizeof(input_str)) {
+		LOG_ERR("%s: input string length too long", __func__);
+		goto out;
+	}
+
+	if (copy_from_user(input_str, buffer, size - 1)) {
+		LOG_ERR("%s: failed to get input string", __func__);
+		goto out;
+	}
+#define ALLOC_STR "alloc"
+#define FREE_STR "free"
+#define DEBUG_STR "debug"
+#define RESERVE_STR "reserve"
+#define DMA_ALLOC_STR "dma_alloc"
+#define DMA_FREE_STR "dma_free"
+	if (strncmp(input_str, ALLOC_STR, strlen(ALLOC_STR)) == 0) {
+		int alloc_size;
+		char *p = input_str + strlen(ALLOC_STR);
+
+		while (*p == ' ')
+			p++;
+		alloc_size = memparse(p, NULL);
+		LOG_INFO("/proc/vc-cma: alloc %d", alloc_size);
+		if (alloc_size)
+			send_vc_msg(VC_CMA_MSG_REQUEST_FREE,
+				    alloc_size / VC_CMA_CHUNK_SIZE, 0);
+		else
+			LOG_ERR("invalid size '%s'", p);
+		rc = size;
+	} else if (strncmp(input_str, FREE_STR, strlen(FREE_STR)) == 0) {
+		int alloc_size;
+		char *p = input_str + strlen(FREE_STR);
+
+		while (*p == ' ')
+			p++;
+		alloc_size = memparse(p, NULL);
+		LOG_INFO("/proc/vc-cma: free %d", alloc_size);
+		if (alloc_size)
+			send_vc_msg(VC_CMA_MSG_REQUEST_ALLOC,
+				    alloc_size / VC_CMA_CHUNK_SIZE, 0);
+		else
+			LOG_ERR("invalid size '%s'", p);
+		rc = size;
+	} else if (strncmp(input_str, DEBUG_STR, strlen(DEBUG_STR)) == 0) {
+		char *p = input_str + strlen(DEBUG_STR);
+		while (*p == ' ')
+			p++;
+		if ((strcmp(p, "on") == 0) || (strcmp(p, "1") == 0))
+			vc_cma_debug = 1;
+		else if ((strcmp(p, "off") == 0) || (strcmp(p, "0") == 0))
+			vc_cma_debug = 0;
+		LOG_INFO("/proc/vc-cma: debug %s", vc_cma_debug ? "on" : "off");
+		rc = size;
+	} else if (strncmp(input_str, RESERVE_STR, strlen(RESERVE_STR)) == 0) {
+		int alloc_size;
+		int reserved;
+		char *p = input_str + strlen(RESERVE_STR);
+		while (*p == ' ')
+			p++;
+		alloc_size = memparse(p, NULL);
+
+		reserved = vc_cma_set_reserve(alloc_size, current->tgid);
+		rc = (reserved >= 0) ? size : reserved;
+	} else if (strncmp(input_str, DMA_ALLOC_STR, strlen(DMA_ALLOC_STR)) == 0) {
+		int alloc_size;
+		char *p = input_str + strlen(DMA_ALLOC_STR);
+		while (*p == ' ')
+			p++;
+		alloc_size = memparse(p, NULL);
+
+		if (vc_cma_dma_alloc) {
+		    dma_release_from_contiguous(NULL, vc_cma_dma_alloc,
+						vc_cma_dma_size);
+		    vc_cma_dma_alloc = NULL;
+		    vc_cma_dma_size = 0;
+		}
+		vc_cma_dma_alloc = dma_alloc_from_contiguous(NULL, alloc_size, 0);
+		vc_cma_dma_size = (vc_cma_dma_alloc ? alloc_size : 0);
+		if (vc_cma_dma_alloc)
+			LOG_INFO("dma_alloc(%d pages) -> %p", alloc_size, page_address(vc_cma_dma_alloc));
+		else
+			LOG_ERR("dma_alloc(%d pages) failed", alloc_size);
+		rc = size;
+	} else if (strncmp(input_str, DMA_FREE_STR, strlen(DMA_FREE_STR)) == 0) {
+		if (vc_cma_dma_alloc) {
+		    dma_release_from_contiguous(NULL, vc_cma_dma_alloc,
+						vc_cma_dma_size);
+		    vc_cma_dma_alloc = NULL;
+		    vc_cma_dma_size = 0;
+		}
+		rc = size;
+	}
+
+out:
+	return rc;
+}
+
+/****************************************************************************
+*
+*   File Operations for /proc interface.
+*
+***************************************************************************/
+
+static const struct file_operations vc_cma_proc_fops = {
+	.open = vc_cma_proc_open,
+	.read = seq_read,
+	.write = vc_cma_proc_write,
+	.llseek = seq_lseek,
+	.release = single_release
+};
+
+static int vc_cma_set_reserve(unsigned int reserve, unsigned int pid)
+{
+	struct vc_cma_reserve_user *user = NULL;
+	int delta = 0;
+	int i;
+
+	if (down_interruptible(&vc_cma_reserve_mutex))
+		return -ERESTARTSYS;
+
+	for (i = 0; i < vc_cma_reserve_count; i++) {
+		if (pid == vc_cma_reserve_users[i].pid) {
+			user = &vc_cma_reserve_users[i];
+			delta = reserve - user->reserve;
+			if (reserve)
+				user->reserve = reserve;
+			else {
+				/* Remove this entry by copying downwards */
+				while ((i + 1) < vc_cma_reserve_count) {
+					user[0].pid = user[1].pid;
+					user[0].reserve = user[1].reserve;
+					user++;
+					i++;
+				}
+				vc_cma_reserve_count--;
+				user = NULL;
+			}
+			break;
+		}
+	}
+
+	if (reserve && !user) {
+		if (vc_cma_reserve_count == VC_CMA_RESERVE_COUNT_MAX) {
+			LOG_ERR("vc-cma: Too many reservations - "
+				"increase CMA_RESERVE_COUNT_MAX");
+			up(&vc_cma_reserve_mutex);
+			return -EBUSY;
+		}
+		user = &vc_cma_reserve_users[vc_cma_reserve_count];
+		user->pid = pid;
+		user->reserve = reserve;
+		delta = reserve;
+		vc_cma_reserve_count++;
+	}
+
+	vc_cma_reserve_total += delta;
+
+	send_vc_msg(VC_CMA_MSG_RESERVE,
+		    vc_cma_reserve_total & 0xffff, vc_cma_reserve_total >> 16);
+
+	send_worker_msg((VCHIQ_HEADER_T *) VC_CMA_MSG_UPDATE_RESERVE);
+
+	LOG_DBG("/proc/vc-cma: reserve %d (PID %d) - total %u",
+		reserve, pid, vc_cma_reserve_total);
+
+	up(&vc_cma_reserve_mutex);
+
+	return vc_cma_reserve_total;
+}
+
+static VCHIQ_STATUS_T cma_service_callback(VCHIQ_REASON_T reason,
+					   VCHIQ_HEADER_T * header,
+					   VCHIQ_SERVICE_HANDLE_T service,
+					   void *bulk_userdata)
+{
+	switch (reason) {
+	case VCHIQ_MESSAGE_AVAILABLE:
+		if (!send_worker_msg(header))
+			return VCHIQ_RETRY;
+		break;
+	case VCHIQ_SERVICE_CLOSED:
+		LOG_DBG("CMA service closed");
+		break;
+	default:
+		LOG_ERR("Unexpected CMA callback reason %d", reason);
+		break;
+	}
+	return VCHIQ_SUCCESS;
+}
+
+static void send_vc_msg(unsigned short type,
+			unsigned short param1, unsigned short param2)
+{
+	unsigned short msg[] = { type, param1, param2 };
+	VCHIQ_ELEMENT_T elem = { &msg, sizeof(msg) };
+	VCHIQ_STATUS_T ret;
+	vchiq_use_service(cma_service);
+	ret = vchiq_queue_message(cma_service, &elem, 1);
+	vchiq_release_service(cma_service);
+	if (ret != VCHIQ_SUCCESS)
+		LOG_ERR("vchiq_queue_message returned %x", ret);
+}
+
+static bool send_worker_msg(VCHIQ_HEADER_T * msg)
+{
+	if (down_interruptible(&vc_cma_worker_queue_push_mutex))
+		return false;
+	vchiu_queue_push(&cma_msg_queue, msg);
+	up(&vc_cma_worker_queue_push_mutex);
+	return true;
+}
+
+static int vc_cma_alloc_chunks(int num_chunks, struct cma_msg *reply)
+{
+	int i;
+	for (i = 0; i < num_chunks; i++) {
+		struct page *chunk;
+		unsigned int chunk_num;
+		uint8_t *chunk_addr;
+		size_t chunk_size = PAGES_PER_CHUNK << PAGE_SHIFT;
+
+		chunk = dma_alloc_from_contiguous(&vc_cma_device.dev,
+						  PAGES_PER_CHUNK,
+						  VC_CMA_CHUNK_ORDER);
+		if (!chunk)
+			break;
+
+		chunk_addr = page_address(chunk);
+		dmac_flush_range(chunk_addr, chunk_addr + chunk_size);
+		outer_inv_range(__pa(chunk_addr), __pa(chunk_addr) +
+			chunk_size);
+
+		chunk_num =
+		    (page_to_phys(chunk) - vc_cma_base) / VC_CMA_CHUNK_SIZE;
+		BUG_ON(((page_to_phys(chunk) - vc_cma_base) %
+			VC_CMA_CHUNK_SIZE) != 0);
+		if (chunk_num >= vc_cma_chunks) {
+			phys_addr_t _pa = vc_cma_base + vc_cma_size - 1;
+			LOG_ERR("%s: ===============================",
+				__func__);
+			LOG_ERR("%s: chunk phys %x, vc_cma %pa-%pa - "
+				"bad SPARSEMEM configuration?",
+				__func__, (unsigned int)page_to_phys(chunk),
+				&vc_cma_base, &_pa);
+			LOG_ERR("%s: dev->cma_area = %p", __func__,
+				(void*)0/*vc_cma_device.dev.cma_area*/);
+			LOG_ERR("%s: ===============================",
+				__func__);
+			break;
+		}
+		reply->params[i] = chunk_num;
+		vc_cma_chunks_used++;
+	}
+
+	if (i < num_chunks) {
+		LOG_ERR("%s: dma_alloc_from_contiguous failed "
+			"for %x bytes (alloc %d of %d, %d free)",
+			__func__, VC_CMA_CHUNK_SIZE, i,
+			num_chunks, vc_cma_chunks - vc_cma_chunks_used);
+		num_chunks = i;
+	}
+
+	LOG_DBG("CMA allocated %d chunks -> %d used",
+		num_chunks, vc_cma_chunks_used);
+	reply->type = VC_CMA_MSG_ALLOCATED;
+
+	{
+		VCHIQ_ELEMENT_T elem = {
+			reply,
+			offsetof(struct cma_msg, params[0]) +
+			    num_chunks * sizeof(reply->params[0])
+		};
+		VCHIQ_STATUS_T ret;
+		vchiq_use_service(cma_service);
+		ret = vchiq_queue_message(cma_service, &elem, 1);
+		vchiq_release_service(cma_service);
+		if (ret != VCHIQ_SUCCESS)
+			LOG_ERR("vchiq_queue_message return " "%x", ret);
+	}
+
+	return num_chunks;
+}
+
+static int cma_worker_proc(void *param)
+{
+	static struct cma_msg reply;
+	(void)param;
+
+	while (1) {
+		VCHIQ_HEADER_T *msg;
+		static struct cma_msg msg_copy;
+		struct cma_msg *cma_msg = &msg_copy;
+		int type, msg_size;
+
+		msg = vchiu_queue_pop(&cma_msg_queue);
+		if ((unsigned int)msg >= VC_CMA_MSG_MAX) {
+			msg_size = msg->size;
+			memcpy(&msg_copy, msg->data, msg_size);
+			type = cma_msg->type;
+			vchiq_release_message(cma_service, msg);
+		} else {
+			msg_size = 0;
+			type = (int)msg;
+			if (type == VC_CMA_MSG_QUIT)
+				break;
+			else if (type == VC_CMA_MSG_UPDATE_RESERVE) {
+				msg = NULL;
+				cma_msg = NULL;
+			} else {
+				BUG();
+				continue;
+			}
+		}
+
+		switch (type) {
+		case VC_CMA_MSG_ALLOC:{
+				int num_chunks, free_chunks;
+				num_chunks = cma_msg->params[0];
+				free_chunks =
+				    vc_cma_chunks - vc_cma_chunks_used;
+				LOG_DBG("CMA_MSG_ALLOC(%d chunks)", num_chunks);
+				if (num_chunks > VC_CMA_MAX_PARAMS_PER_MSG) {
+					LOG_ERR
+					    ("CMA_MSG_ALLOC - chunk count (%d) "
+					     "exceeds VC_CMA_MAX_PARAMS_PER_MSG (%d)",
+					     num_chunks,
+					     VC_CMA_MAX_PARAMS_PER_MSG);
+					num_chunks = VC_CMA_MAX_PARAMS_PER_MSG;
+				}
+
+				if (num_chunks > free_chunks) {
+					LOG_ERR
+					    ("CMA_MSG_ALLOC - chunk count (%d) "
+					     "exceeds free chunks (%d)",
+					     num_chunks, free_chunks);
+					num_chunks = free_chunks;
+				}
+
+				vc_cma_alloc_chunks(num_chunks, &reply);
+			}
+			break;
+
+		case VC_CMA_MSG_FREE:{
+				int chunk_count =
+				    (msg_size -
+				     offsetof(struct cma_msg,
+					      params)) /
+				    sizeof(cma_msg->params[0]);
+				int i;
+				BUG_ON(chunk_count <= 0);
+
+				LOG_DBG("CMA_MSG_FREE(%d chunks - %x, ...)",
+					chunk_count, cma_msg->params[0]);
+				for (i = 0; i < chunk_count; i++) {
+					int chunk_num = cma_msg->params[i];
+					struct page *page = vc_cma_base_page +
+					    chunk_num * PAGES_PER_CHUNK;
+					if (chunk_num >= vc_cma_chunks) {
+						LOG_ERR
+						    ("CMA_MSG_FREE - chunk %d of %d"
+						     " (value %x) exceeds maximum "
+						     "(%x)", i, chunk_count,
+						     chunk_num,
+						     vc_cma_chunks - 1);
+						break;
+					}
+
+					if (!dma_release_from_contiguous
+					    (&vc_cma_device.dev, page,
+					     PAGES_PER_CHUNK)) {
+						phys_addr_t _pa = page_to_phys(page);
+						LOG_ERR
+						    ("CMA_MSG_FREE - failed to "
+						     "release chunk %d (phys %pa, "
+						     "page %x)", chunk_num,
+						     &_pa,
+						     (unsigned int)page);
+					}
+					vc_cma_chunks_used--;
+				}
+				LOG_DBG("CMA released %d chunks -> %d used",
+					i, vc_cma_chunks_used);
+			}
+			break;
+
+		case VC_CMA_MSG_UPDATE_RESERVE:{
+				int chunks_needed =
+				    ((vc_cma_reserve_total + VC_CMA_CHUNK_SIZE -
+				      1)
+				     / VC_CMA_CHUNK_SIZE) -
+				    vc_cma_chunks_reserved;
+
+				LOG_DBG
+				    ("CMA_MSG_UPDATE_RESERVE(%d chunks needed)",
+				     chunks_needed);
+
+				/* Cap the reservations to what is available */
+				if (chunks_needed > 0) {
+					if (chunks_needed >
+					    (vc_cma_chunks -
+					     vc_cma_chunks_used))
+						chunks_needed =
+						    (vc_cma_chunks -
+						     vc_cma_chunks_used);
+
+					chunks_needed =
+					    vc_cma_alloc_chunks(chunks_needed,
+								&reply);
+				}
+
+				LOG_DBG
+				    ("CMA_MSG_UPDATE_RESERVE(%d chunks allocated)",
+				     chunks_needed);
+				vc_cma_chunks_reserved += chunks_needed;
+			}
+			break;
+
+		default:
+			LOG_ERR("unexpected msg type %d", type);
+			break;
+		}
+	}
+
+	LOG_DBG("quitting...");
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vc_cma_connected_init
+*
+*   This function is called once the videocore has been connected.
+*
+***************************************************************************/
+
+static void vc_cma_connected_init(void)
+{
+	VCHIQ_SERVICE_PARAMS_T service_params;
+
+	LOG_DBG("vc_cma_connected_init");
+
+	if (!vchiu_queue_init(&cma_msg_queue, 16)) {
+		LOG_ERR("could not create CMA msg queue");
+		goto fail_queue;
+	}
+
+	if (vchiq_initialise(&cma_instance) != VCHIQ_SUCCESS)
+		goto fail_vchiq_init;
+
+	vchiq_connect(cma_instance);
+
+	service_params.fourcc = VC_CMA_FOURCC;
+	service_params.callback = cma_service_callback;
+	service_params.userdata = NULL;
+	service_params.version = VC_CMA_VERSION;
+	service_params.version_min = VC_CMA_VERSION;
+
+	if (vchiq_open_service(cma_instance, &service_params,
+			       &cma_service) != VCHIQ_SUCCESS) {
+		LOG_ERR("failed to open service - already in use?");
+		goto fail_vchiq_open;
+	}
+
+	vchiq_release_service(cma_service);
+
+	cma_worker = kthread_create(cma_worker_proc, NULL, "cma_worker");
+	if (!cma_worker) {
+		LOG_ERR("could not create CMA worker thread");
+		goto fail_worker;
+	}
+	set_user_nice(cma_worker, -20);
+	wake_up_process(cma_worker);
+
+	return;
+
+fail_worker:
+	vchiq_close_service(cma_service);
+fail_vchiq_open:
+	vchiq_shutdown(cma_instance);
+fail_vchiq_init:
+	vchiu_queue_delete(&cma_msg_queue);
+fail_queue:
+	return;
+}
+
+void
+loud_error_header(void)
+{
+	if (in_loud_error)
+		return;
+
+	LOG_ERR("============================================================"
+		"================");
+	LOG_ERR("============================================================"
+		"================");
+	LOG_ERR("=====");
+
+	in_loud_error = 1;
+}
+
+void
+loud_error_footer(void)
+{
+	if (!in_loud_error)
+		return;
+
+	LOG_ERR("=====");
+	LOG_ERR("============================================================"
+		"================");
+	LOG_ERR("============================================================"
+		"================");
+
+	in_loud_error = 0;
+}
+
+#if 1
+static int check_cma_config(void) { return 1; }
+#else
+static int
+read_vc_debug_var(VC_MEM_ACCESS_HANDLE_T handle,
+	const char *symbol,
+	void *buf, size_t bufsize)
+{
+	VC_MEM_ADDR_T vcMemAddr;
+	size_t vcMemSize;
+	uint8_t *mapAddr;
+	off_t  vcMapAddr;
+
+	if (!LookupVideoCoreSymbol(handle, symbol,
+		&vcMemAddr,
+		&vcMemSize)) {
+		loud_error_header();
+		loud_error(
+			"failed to find VC symbol \"%s\".",
+			symbol);
+		loud_error_footer();
+		return 0;
+	}
+
+	if (vcMemSize != bufsize) {
+		loud_error_header();
+		loud_error(
+			"VC symbol \"%s\" is the wrong size.",
+			symbol);
+		loud_error_footer();
+		return 0;
+	}
+
+	vcMapAddr = (off_t)vcMemAddr & VC_MEM_TO_ARM_ADDR_MASK;
+	vcMapAddr += mm_vc_mem_phys_addr;
+	mapAddr = ioremap_nocache(vcMapAddr, vcMemSize);
+	if (mapAddr == 0) {
+		loud_error_header();
+		loud_error(
+			"failed to ioremap \"%s\" @ 0x%x "
+			"(phys: 0x%x, size: %u).",
+			symbol,
+			(unsigned int)vcMapAddr,
+			(unsigned int)vcMemAddr,
+			(unsigned int)vcMemSize);
+		loud_error_footer();
+		return 0;
+	}
+
+	memcpy(buf, mapAddr, bufsize);
+	iounmap(mapAddr);
+
+	return 1;
+}
+
+
+static int
+check_cma_config(void)
+{
+	VC_MEM_ACCESS_HANDLE_T mem_hndl;
+	VC_MEM_ADDR_T mempool_start;
+	VC_MEM_ADDR_T mempool_end;
+	VC_MEM_ADDR_T mempool_offline_start;
+	VC_MEM_ADDR_T mempool_offline_end;
+	VC_MEM_ADDR_T cam_alloc_base;
+	VC_MEM_ADDR_T cam_alloc_size;
+	VC_MEM_ADDR_T cam_alloc_end;
+	int success = 0;
+
+	if (OpenVideoCoreMemory(&mem_hndl) != 0)
+		goto out;
+
+	/* Read the relevant VideoCore variables */
+	if (!read_vc_debug_var(mem_hndl, "__MEMPOOL_START",
+		&mempool_start,
+		sizeof(mempool_start)))
+		goto close;
+
+	if (!read_vc_debug_var(mem_hndl, "__MEMPOOL_END",
+		&mempool_end,
+		sizeof(mempool_end)))
+		goto close;
+
+	if (!read_vc_debug_var(mem_hndl, "__MEMPOOL_OFFLINE_START",
+		&mempool_offline_start,
+		sizeof(mempool_offline_start)))
+		goto close;
+
+	if (!read_vc_debug_var(mem_hndl, "__MEMPOOL_OFFLINE_END",
+		&mempool_offline_end,
+		sizeof(mempool_offline_end)))
+		goto close;
+
+	if (!read_vc_debug_var(mem_hndl, "cam_alloc_base",
+		&cam_alloc_base,
+		sizeof(cam_alloc_base)))
+		goto close;
+
+	if (!read_vc_debug_var(mem_hndl, "cam_alloc_size",
+		&cam_alloc_size,
+		sizeof(cam_alloc_size)))
+		goto close;
+
+	cam_alloc_end = cam_alloc_base + cam_alloc_size;
+
+	success = 1;
+
+	/* Now the sanity checks */
+	if (!mempool_offline_start)
+		mempool_offline_start = mempool_start;
+	if (!mempool_offline_end)
+		mempool_offline_end = mempool_end;
+
+	if (VCADDR_TO_PHYSADDR(mempool_offline_start) != vc_cma_base) {
+		loud_error_header();
+		loud_error(
+			"__MEMPOOL_OFFLINE_START(%x -> %lx) doesn't match "
+			"vc_cma_base(%x)",
+			mempool_offline_start,
+			VCADDR_TO_PHYSADDR(mempool_offline_start),
+			vc_cma_base);
+		success = 0;
+	}
+
+	if (VCADDR_TO_PHYSADDR(mempool_offline_end) !=
+		(vc_cma_base + vc_cma_size)) {
+		loud_error_header();
+		loud_error(
+			"__MEMPOOL_OFFLINE_END(%x -> %lx) doesn't match "
+			"vc_cma_base(%x) + vc_cma_size(%x) = %x",
+			mempool_offline_start,
+			VCADDR_TO_PHYSADDR(mempool_offline_end),
+			vc_cma_base, vc_cma_size, vc_cma_base + vc_cma_size);
+		success = 0;
+	}
+
+	if (mempool_end < mempool_start) {
+		loud_error_header();
+		loud_error(
+			"__MEMPOOL_END(%x) must not be before "
+			"__MEMPOOL_START(%x)",
+			mempool_end,
+			mempool_start);
+		success = 0;
+	}
+
+	if (mempool_offline_end < mempool_offline_start) {
+		loud_error_header();
+		loud_error(
+			"__MEMPOOL_OFFLINE_END(%x) must not be before "
+			"__MEMPOOL_OFFLINE_START(%x)",
+			mempool_offline_end,
+			mempool_offline_start);
+		success = 0;
+	}
+
+	if (mempool_offline_start < mempool_start) {
+		loud_error_header();
+		loud_error(
+			"__MEMPOOL_OFFLINE_START(%x) must not be before "
+			"__MEMPOOL_START(%x)",
+			mempool_offline_start,
+			mempool_start);
+		success = 0;
+	}
+
+	if (mempool_offline_end > mempool_end) {
+		loud_error_header();
+		loud_error(
+			"__MEMPOOL_OFFLINE_END(%x) must not be after "
+			"__MEMPOOL_END(%x)",
+			mempool_offline_end,
+			mempool_end);
+		success = 0;
+	}
+
+	if ((cam_alloc_base < mempool_end) &&
+		(cam_alloc_end > mempool_start)) {
+		loud_error_header();
+		loud_error(
+			"cam_alloc pool(%x-%x) overlaps "
+			"mempool(%x-%x)",
+			cam_alloc_base, cam_alloc_end,
+			mempool_start, mempool_end);
+		success = 0;
+	}
+
+	loud_error_footer();
+
+close:
+	CloseVideoCoreMemory(mem_hndl);
+
+out:
+	return success;
+}
+#endif
+
+static int vc_cma_init(void)
+{
+	int rc = -EFAULT;
+	struct device *dev;
+
+	if (!check_cma_config())
+		goto out_release;
+
+	LOG_INFO("vc-cma: Videocore CMA driver");
+	LOG_INFO("vc-cma: vc_cma_base      = %pa", &vc_cma_base);
+	LOG_INFO("vc-cma: vc_cma_size      = 0x%08x (%u MiB)",
+		 vc_cma_size, vc_cma_size / (1024 * 1024));
+	LOG_INFO("vc-cma: vc_cma_initial   = 0x%08x (%u MiB)",
+		 vc_cma_initial, vc_cma_initial / (1024 * 1024));
+
+	vc_cma_base_page = phys_to_page(vc_cma_base);
+
+	if (vc_cma_chunks) {
+		int chunks_needed = vc_cma_initial / VC_CMA_CHUNK_SIZE;
+
+		for (vc_cma_chunks_used = 0;
+		     vc_cma_chunks_used < chunks_needed; vc_cma_chunks_used++) {
+			struct page *chunk;
+			chunk = dma_alloc_from_contiguous(&vc_cma_device.dev,
+							  PAGES_PER_CHUNK,
+							  VC_CMA_CHUNK_ORDER);
+			if (!chunk)
+				break;
+			BUG_ON(((page_to_phys(chunk) - vc_cma_base) %
+				VC_CMA_CHUNK_SIZE) != 0);
+		}
+		if (vc_cma_chunks_used != chunks_needed) {
+			LOG_ERR("%s: dma_alloc_from_contiguous failed (%d "
+				"bytes, allocation %d of %d)",
+				__func__, VC_CMA_CHUNK_SIZE,
+				vc_cma_chunks_used, chunks_needed);
+			goto out_release;
+		}
+
+		vchiq_add_connected_callback(vc_cma_connected_init);
+	}
+
+	rc = alloc_chrdev_region(&vc_cma_devnum, 0, 1, DRIVER_NAME);
+	if (rc < 0) {
+		LOG_ERR("%s: alloc_chrdev_region failed (rc=%d)", __func__, rc);
+		goto out_release;
+	}
+
+	cdev_init(&vc_cma_cdev, &vc_cma_fops);
+	rc = cdev_add(&vc_cma_cdev, vc_cma_devnum, 1);
+	if (rc != 0) {
+		LOG_ERR("%s: cdev_add failed (rc=%d)", __func__, rc);
+		goto out_unregister;
+	}
+
+	vc_cma_class = class_create(THIS_MODULE, DRIVER_NAME);
+	if (IS_ERR(vc_cma_class)) {
+		rc = PTR_ERR(vc_cma_class);
+		LOG_ERR("%s: class_create failed (rc=%d)", __func__, rc);
+		goto out_cdev_del;
+	}
+
+	dev = device_create(vc_cma_class, NULL, vc_cma_devnum, NULL,
+			    DRIVER_NAME);
+	if (IS_ERR(dev)) {
+		rc = PTR_ERR(dev);
+		LOG_ERR("%s: device_create failed (rc=%d)", __func__, rc);
+		goto out_class_destroy;
+	}
+
+	vc_cma_proc_entry = proc_create(DRIVER_NAME, 0444, NULL, &vc_cma_proc_fops);
+	if (vc_cma_proc_entry == NULL) {
+		rc = -EFAULT;
+		LOG_ERR("%s: proc_create failed", __func__);
+		goto out_device_destroy;
+	}
+
+	vc_cma_inited = 1;
+	return 0;
+
+out_device_destroy:
+	device_destroy(vc_cma_class, vc_cma_devnum);
+
+out_class_destroy:
+	class_destroy(vc_cma_class);
+	vc_cma_class = NULL;
+
+out_cdev_del:
+	cdev_del(&vc_cma_cdev);
+
+out_unregister:
+	unregister_chrdev_region(vc_cma_devnum, 1);
+
+out_release:
+	/* It is tempting to try to clean up by calling
+	   dma_release_from_contiguous for all allocated chunks, but it isn't
+	   a very safe thing to do. If vc_cma_initial is non-zero it is because
+	   VideoCore is already using that memory, so giving it back to Linux
+	   is likely to be fatal.
+	 */
+	return -1;
+}
+
+/****************************************************************************
+*
+*   vc_cma_exit
+*
+***************************************************************************/
+
+static void __exit vc_cma_exit(void)
+{
+	LOG_DBG("%s: called", __func__);
+
+	if (vc_cma_inited) {
+		remove_proc_entry(DRIVER_NAME, NULL);
+		device_destroy(vc_cma_class, vc_cma_devnum);
+		class_destroy(vc_cma_class);
+		cdev_del(&vc_cma_cdev);
+		unregister_chrdev_region(vc_cma_devnum, 1);
+	}
+}
+
+module_init(vc_cma_init);
+module_exit(vc_cma_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Broadcom Corporation");
diff -Nur linux-3.18.10/drivers/char/broadcom/vc_sm/Makefile linux-rpi/drivers/char/broadcom/vc_sm/Makefile
--- linux-3.18.10/drivers/char/broadcom/vc_sm/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/char/broadcom/vc_sm/Makefile	2015-03-26 11:46:46.136230632 +0100
@@ -0,0 +1,21 @@
+EXTRA_CFLAGS  += -Wall -Wstrict-prototypes -Wno-trigraphs -O2
+
+EXTRA_CFLAGS  += -I"./arch/arm/mach-bcm2708/include/mach"
+EXTRA_CFLAGS  += -I"drivers/misc/vc04_services"
+EXTRA_CFLAGS  += -I"drivers/misc/vc04_services/interface/vchi"
+EXTRA_CFLAGS  += -I"drivers/misc/vc04_services/interface/vchiq_arm"
+EXTRA_CFLAGS  += -I"$(srctree)/fs/"
+
+EXTRA_CFLAGS  += -DOS_ASSERT_FAILURE
+EXTRA_CFLAGS  += -D__STDC_VERSION=199901L
+EXTRA_CFLAGS  += -D__STDC_VERSION__=199901L
+EXTRA_CFLAGS  += -D__VCCOREVER__=0
+EXTRA_CFLAGS  += -D__KERNEL__
+EXTRA_CFLAGS  += -D__linux__
+EXTRA_CFLAGS  += -Werror
+
+obj-$(CONFIG_BCM_VC_SM) := vc-sm.o
+
+vc-sm-objs := \
+    vmcs_sm.o \
+    vc_vchi_sm.o
diff -Nur linux-3.18.10/drivers/char/broadcom/vc_sm/vc_vchi_sm.c linux-rpi/drivers/char/broadcom/vc_sm/vc_vchi_sm.c
--- linux-3.18.10/drivers/char/broadcom/vc_sm/vc_vchi_sm.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/char/broadcom/vc_sm/vc_vchi_sm.c	2015-03-26 11:46:46.136230632 +0100
@@ -0,0 +1,492 @@
+/*****************************************************************************
+* Copyright 2011-2012 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/* ---- Include Files ----------------------------------------------------- */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/semaphore.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/kthread.h>
+
+#include "vc_vchi_sm.h"
+
+#define VC_SM_VER  1
+#define VC_SM_MIN_VER 0
+
+/* ---- Private Constants and Types -------------------------------------- */
+
+/* Command blocks come from a pool */
+#define SM_MAX_NUM_CMD_RSP_BLKS 32
+
+struct sm_cmd_rsp_blk {
+	struct list_head head;	/* To create lists */
+	struct semaphore sema;	/* To be signaled when the response is there */
+
+	uint16_t id;
+	uint16_t length;
+
+	uint8_t msg[VC_SM_MAX_MSG_LEN];
+
+	uint32_t wait:1;
+	uint32_t sent:1;
+	uint32_t alloc:1;
+
+};
+
+struct sm_instance {
+	uint32_t num_connections;
+	VCHI_SERVICE_HANDLE_T vchi_handle[VCHI_MAX_NUM_CONNECTIONS];
+	struct task_struct *io_thread;
+	struct semaphore io_sema;
+
+	uint32_t trans_id;
+
+	struct mutex lock;
+	struct list_head cmd_list;
+	struct list_head rsp_list;
+	struct list_head dead_list;
+
+	struct sm_cmd_rsp_blk free_blk[SM_MAX_NUM_CMD_RSP_BLKS];
+	struct list_head free_list;
+	struct mutex free_lock;
+	struct semaphore free_sema;
+
+};
+
+/* ---- Private Variables ------------------------------------------------ */
+
+/* ---- Private Function Prototypes -------------------------------------- */
+
+/* ---- Private Functions ------------------------------------------------ */
+static struct
+sm_cmd_rsp_blk *vc_vchi_cmd_create(struct sm_instance *instance,
+		VC_SM_MSG_TYPE id, void *msg,
+		uint32_t size, int wait)
+{
+	struct sm_cmd_rsp_blk *blk;
+	VC_SM_MSG_HDR_T *hdr;
+
+	if (down_interruptible(&instance->free_sema)) {
+		blk = kmalloc(sizeof(*blk), GFP_KERNEL);
+		if (!blk)
+			return NULL;
+
+		blk->alloc = 1;
+		sema_init(&blk->sema, 0);
+	} else {
+		mutex_lock(&instance->free_lock);
+		blk =
+		    list_first_entry(&instance->free_list,
+				    struct sm_cmd_rsp_blk, head);
+		list_del(&blk->head);
+		mutex_unlock(&instance->free_lock);
+	}
+
+	blk->sent = 0;
+	blk->wait = wait;
+	blk->length = sizeof(*hdr) + size;
+
+	hdr = (VC_SM_MSG_HDR_T *) blk->msg;
+	hdr->type = id;
+	mutex_lock(&instance->lock);
+	hdr->trans_id = blk->id = ++instance->trans_id;
+	mutex_unlock(&instance->lock);
+
+	if (size)
+		memcpy(hdr->body, msg, size);
+
+	return blk;
+}
+
+static void
+vc_vchi_cmd_delete(struct sm_instance *instance, struct sm_cmd_rsp_blk *blk)
+{
+	if (blk->alloc) {
+		kfree(blk);
+		return;
+	}
+
+	mutex_lock(&instance->free_lock);
+	list_add(&blk->head, &instance->free_list);
+	mutex_unlock(&instance->free_lock);
+	up(&instance->free_sema);
+}
+
+static int vc_vchi_sm_videocore_io(void *arg)
+{
+	struct sm_instance *instance = arg;
+	struct sm_cmd_rsp_blk *cmd = NULL, *cmd_tmp;
+	VC_SM_RESULT_T *reply;
+	uint32_t reply_len;
+	int32_t status;
+	int svc_use = 1;
+
+	while (1) {
+		if (svc_use)
+			vchi_service_release(instance->vchi_handle[0]);
+		svc_use = 0;
+		if (!down_interruptible(&instance->io_sema)) {
+			vchi_service_use(instance->vchi_handle[0]);
+			svc_use = 1;
+
+			do {
+				unsigned int flags;
+				/*
+				 * Get new command and move it to response list
+				 */
+				mutex_lock(&instance->lock);
+				if (list_empty(&instance->cmd_list)) {
+					/* no more commands to process */
+					mutex_unlock(&instance->lock);
+					break;
+				}
+				cmd =
+				    list_first_entry(&instance->cmd_list,
+						     struct sm_cmd_rsp_blk,
+						     head);
+				list_move(&cmd->head, &instance->rsp_list);
+				cmd->sent = 1;
+				mutex_unlock(&instance->lock);
+
+				/* Send the command */
+				flags = VCHI_FLAGS_BLOCK_UNTIL_QUEUED;
+				status = vchi_msg_queue(
+						instance->vchi_handle[0],
+						cmd->msg, cmd->length,
+						flags, NULL);
+				if (status) {
+					pr_err("%s: failed to queue message (%d)",
+					     __func__, status);
+				}
+
+				/* If no reply is needed then we're done */
+				if (!cmd->wait) {
+					mutex_lock(&instance->lock);
+					list_del(&cmd->head);
+					mutex_unlock(&instance->lock);
+					vc_vchi_cmd_delete(instance, cmd);
+					continue;
+				}
+
+				if (status) {
+					up(&cmd->sema);
+					continue;
+				}
+
+			} while (1);
+
+			while (!vchi_msg_peek
+			       (instance->vchi_handle[0], (void **)&reply,
+				&reply_len, VCHI_FLAGS_NONE)) {
+				mutex_lock(&instance->lock);
+				list_for_each_entry(cmd, &instance->rsp_list,
+						    head) {
+					if (cmd->id == reply->trans_id)
+						break;
+				}
+				mutex_unlock(&instance->lock);
+
+				if (&cmd->head == &instance->rsp_list) {
+					pr_debug("%s: received response %u, throw away...",
+					     __func__, reply->trans_id);
+				} else if (reply_len > sizeof(cmd->msg)) {
+					pr_err("%s: reply too big (%u) %u, throw away...",
+					     __func__, reply_len,
+					     reply->trans_id);
+				} else {
+					memcpy(cmd->msg, reply, reply_len);
+					up(&cmd->sema);
+				}
+
+				vchi_msg_remove(instance->vchi_handle[0]);
+			}
+
+			/* Go through the dead list and free them */
+			mutex_lock(&instance->lock);
+			list_for_each_entry_safe(cmd, cmd_tmp,
+						 &instance->dead_list, head) {
+				list_del(&cmd->head);
+				vc_vchi_cmd_delete(instance, cmd);
+			}
+			mutex_unlock(&instance->lock);
+		}
+	}
+
+	return 0;
+}
+
+static void vc_sm_vchi_callback(void *param,
+				const VCHI_CALLBACK_REASON_T reason,
+				void *msg_handle)
+{
+	struct sm_instance *instance = param;
+
+	(void)msg_handle;
+
+	switch (reason) {
+	case VCHI_CALLBACK_MSG_AVAILABLE:
+		up(&instance->io_sema);
+		break;
+
+	case VCHI_CALLBACK_SERVICE_CLOSED:
+		pr_info("%s: service CLOSED!!", __func__);
+	default:
+		break;
+	}
+}
+
+VC_VCHI_SM_HANDLE_T vc_vchi_sm_init(VCHI_INSTANCE_T vchi_instance,
+				    VCHI_CONNECTION_T **vchi_connections,
+				    uint32_t num_connections)
+{
+	uint32_t i;
+	struct sm_instance *instance;
+	int status;
+
+	pr_debug("%s: start", __func__);
+
+	if (num_connections > VCHI_MAX_NUM_CONNECTIONS) {
+		pr_err("%s: unsupported number of connections %u (max=%u)",
+			__func__, num_connections, VCHI_MAX_NUM_CONNECTIONS);
+
+		goto err_null;
+	}
+	/* Allocate memory for this instance */
+	instance = kzalloc(sizeof(*instance), GFP_KERNEL);
+
+	/* Misc initialisations */
+	mutex_init(&instance->lock);
+	sema_init(&instance->io_sema, 0);
+	INIT_LIST_HEAD(&instance->cmd_list);
+	INIT_LIST_HEAD(&instance->rsp_list);
+	INIT_LIST_HEAD(&instance->dead_list);
+	INIT_LIST_HEAD(&instance->free_list);
+	sema_init(&instance->free_sema, SM_MAX_NUM_CMD_RSP_BLKS);
+	mutex_init(&instance->free_lock);
+	for (i = 0; i < SM_MAX_NUM_CMD_RSP_BLKS; i++) {
+		sema_init(&instance->free_blk[i].sema, 0);
+		list_add(&instance->free_blk[i].head, &instance->free_list);
+	}
+
+	/* Open the VCHI service connections */
+	instance->num_connections = num_connections;
+	for (i = 0; i < num_connections; i++) {
+		SERVICE_CREATION_T params = {
+			VCHI_VERSION_EX(VC_SM_VER, VC_SM_MIN_VER),
+			VC_SM_SERVER_NAME,
+			vchi_connections[i],
+			0,
+			0,
+			vc_sm_vchi_callback,
+			instance,
+			0,
+			0,
+			0,
+		};
+
+		status = vchi_service_open(vchi_instance,
+					   &params, &instance->vchi_handle[i]);
+		if (status) {
+			pr_err("%s: failed to open VCHI service (%d)",
+					__func__, status);
+
+			goto err_close_services;
+		}
+	}
+
+	/* Create the thread which takes care of all io to/from videoocore. */
+	instance->io_thread = kthread_create(&vc_vchi_sm_videocore_io,
+					     (void *)instance, "SMIO");
+	if (instance->io_thread == NULL) {
+		pr_err("%s: failed to create SMIO thread", __func__);
+
+		goto err_close_services;
+	}
+	set_user_nice(instance->io_thread, -10);
+	wake_up_process(instance->io_thread);
+
+	pr_debug("%s: success - instance 0x%x", __func__, (unsigned)instance);
+	return instance;
+
+err_close_services:
+	for (i = 0; i < instance->num_connections; i++) {
+		if (instance->vchi_handle[i] != NULL)
+			vchi_service_close(instance->vchi_handle[i]);
+	}
+	kfree(instance);
+err_null:
+	pr_debug("%s: FAILED", __func__);
+	return NULL;
+}
+
+int vc_vchi_sm_stop(VC_VCHI_SM_HANDLE_T *handle)
+{
+	struct sm_instance *instance;
+	uint32_t i;
+
+	if (handle == NULL) {
+		pr_err("%s: invalid pointer to handle %p", __func__, handle);
+		goto lock;
+	}
+
+	if (*handle == NULL) {
+		pr_err("%s: invalid handle %p", __func__, *handle);
+		goto lock;
+	}
+
+	instance = *handle;
+
+	/* Close all VCHI service connections */
+	for (i = 0; i < instance->num_connections; i++) {
+		int32_t success;
+		vchi_service_use(instance->vchi_handle[i]);
+
+		success = vchi_service_close(instance->vchi_handle[i]);
+	}
+
+	kfree(instance);
+
+	*handle = NULL;
+	return 0;
+
+lock:
+	return -EINVAL;
+}
+
+int vc_vchi_sm_send_msg(VC_VCHI_SM_HANDLE_T handle,
+			VC_SM_MSG_TYPE msg_id,
+			void *msg, uint32_t msg_size,
+			void *result, uint32_t result_size,
+			uint32_t *cur_trans_id, uint8_t wait_reply)
+{
+	int status = 0;
+	struct sm_instance *instance = handle;
+	struct sm_cmd_rsp_blk *cmd_blk;
+
+	if (handle == NULL) {
+		pr_err("%s: invalid handle", __func__);
+		return -EINVAL;
+	}
+	if (msg == NULL) {
+		pr_err("%s: invalid msg pointer", __func__);
+		return -EINVAL;
+	}
+
+	cmd_blk =
+	    vc_vchi_cmd_create(instance, msg_id, msg, msg_size, wait_reply);
+	if (cmd_blk == NULL) {
+		pr_err("[%s]: failed to allocate global tracking resource",
+			__func__);
+		return -ENOMEM;
+	}
+
+	if (cur_trans_id != NULL)
+		*cur_trans_id = cmd_blk->id;
+
+	mutex_lock(&instance->lock);
+	list_add_tail(&cmd_blk->head, &instance->cmd_list);
+	mutex_unlock(&instance->lock);
+	up(&instance->io_sema);
+
+	if (!wait_reply)
+		/* We're done */
+		return 0;
+
+	/* Wait for the response */
+	if (down_interruptible(&cmd_blk->sema)) {
+		mutex_lock(&instance->lock);
+		if (!cmd_blk->sent) {
+			list_del(&cmd_blk->head);
+			mutex_unlock(&instance->lock);
+			vc_vchi_cmd_delete(instance, cmd_blk);
+			return -ENXIO;
+		}
+		mutex_unlock(&instance->lock);
+
+		mutex_lock(&instance->lock);
+		list_move(&cmd_blk->head, &instance->dead_list);
+		mutex_unlock(&instance->lock);
+		up(&instance->io_sema);
+		return -EINTR;	/* We're done */
+	}
+
+	if (result && result_size) {
+		memcpy(result, cmd_blk->msg, result_size);
+	} else {
+		VC_SM_RESULT_T *res = (VC_SM_RESULT_T *) cmd_blk->msg;
+		status = (res->success == 0) ? 0 : -ENXIO;
+	}
+
+	mutex_lock(&instance->lock);
+	list_del(&cmd_blk->head);
+	mutex_unlock(&instance->lock);
+	vc_vchi_cmd_delete(instance, cmd_blk);
+	return status;
+}
+
+int vc_vchi_sm_alloc(VC_VCHI_SM_HANDLE_T handle, VC_SM_ALLOC_T *msg,
+		VC_SM_ALLOC_RESULT_T *result, uint32_t *cur_trans_id)
+{
+	return vc_vchi_sm_send_msg(handle, VC_SM_MSG_TYPE_ALLOC,
+				   msg, sizeof(*msg), result, sizeof(*result),
+				   cur_trans_id, 1);
+}
+
+int vc_vchi_sm_free(VC_VCHI_SM_HANDLE_T handle,
+		    VC_SM_FREE_T *msg, uint32_t *cur_trans_id)
+{
+	return vc_vchi_sm_send_msg(handle, VC_SM_MSG_TYPE_FREE,
+				   msg, sizeof(*msg), 0, 0, cur_trans_id, 0);
+}
+
+int vc_vchi_sm_lock(VC_VCHI_SM_HANDLE_T handle,
+		    VC_SM_LOCK_UNLOCK_T *msg,
+		    VC_SM_LOCK_RESULT_T *result, uint32_t *cur_trans_id)
+{
+	return vc_vchi_sm_send_msg(handle, VC_SM_MSG_TYPE_LOCK,
+				   msg, sizeof(*msg), result, sizeof(*result),
+				   cur_trans_id, 1);
+}
+
+int vc_vchi_sm_unlock(VC_VCHI_SM_HANDLE_T handle,
+		      VC_SM_LOCK_UNLOCK_T *msg,
+		      uint32_t *cur_trans_id, uint8_t wait_reply)
+{
+	return vc_vchi_sm_send_msg(handle, wait_reply ?
+				   VC_SM_MSG_TYPE_UNLOCK :
+				   VC_SM_MSG_TYPE_UNLOCK_NOANS, msg,
+				   sizeof(*msg), 0, 0, cur_trans_id,
+				   wait_reply);
+}
+
+int vc_vchi_sm_resize(VC_VCHI_SM_HANDLE_T handle, VC_SM_RESIZE_T *msg,
+		uint32_t *cur_trans_id)
+{
+	return vc_vchi_sm_send_msg(handle, VC_SM_MSG_TYPE_RESIZE,
+				   msg, sizeof(*msg), 0, 0, cur_trans_id, 1);
+}
+
+int vc_vchi_sm_walk_alloc(VC_VCHI_SM_HANDLE_T handle)
+{
+	return vc_vchi_sm_send_msg(handle, VC_SM_MSG_TYPE_WALK_ALLOC,
+				   0, 0, 0, 0, 0, 0);
+}
+
+int vc_vchi_sm_clean_up(VC_VCHI_SM_HANDLE_T handle, VC_SM_ACTION_CLEAN_T *msg)
+{
+	return vc_vchi_sm_send_msg(handle, VC_SM_MSG_TYPE_ACTION_CLEAN,
+				   msg, sizeof(*msg), 0, 0, 0, 0);
+}
diff -Nur linux-3.18.10/drivers/char/broadcom/vc_sm/vmcs_sm.c linux-rpi/drivers/char/broadcom/vc_sm/vmcs_sm.c
--- linux-3.18.10/drivers/char/broadcom/vc_sm/vmcs_sm.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/char/broadcom/vc_sm/vmcs_sm.c	2015-03-26 11:46:46.136230632 +0100
@@ -0,0 +1,3163 @@
+/*****************************************************************************
+* Copyright 2011-2012 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/* ---- Include Files ----------------------------------------------------- */
+
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/dma-mapping.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/hugetlb.h>
+#include <linux/ioctl.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/pfn.h>
+#include <linux/proc_fs.h>
+#include <linux/pagemap.h>
+#include <linux/semaphore.h>
+#include <linux/slab.h>
+#include <linux/seq_file.h>
+#include <linux/types.h>
+#include <asm/cacheflush.h>
+
+#include <vc_mem.h>
+
+#include "vchiq_connected.h"
+#include "vc_vchi_sm.h"
+
+#include <vmcs_sm_ioctl.h>
+#include "vc_sm_knl.h"
+
+/* ---- Private Constants and Types --------------------------------------- */
+
+#define DEVICE_NAME              "vcsm"
+#define DEVICE_MINOR             0
+
+#define VC_SM_DIR_ROOT_NAME       "vc-smem"
+#define VC_SM_DIR_ALLOC_NAME      "alloc"
+#define VC_SM_STATE               "state"
+#define VC_SM_STATS               "statistics"
+#define VC_SM_RESOURCES           "resources"
+#define VC_SM_DEBUG               "debug"
+#define VC_SM_WRITE_BUF_SIZE      128
+
+/* Statistics tracked per resource and globally.
+*/
+enum SM_STATS_T {
+	/* Attempt. */
+	ALLOC,
+	FREE,
+	LOCK,
+	UNLOCK,
+	MAP,
+	FLUSH,
+	INVALID,
+
+	END_ATTEMPT,
+
+	/* Failure. */
+	ALLOC_FAIL,
+	FREE_FAIL,
+	LOCK_FAIL,
+	UNLOCK_FAIL,
+	MAP_FAIL,
+	FLUSH_FAIL,
+	INVALID_FAIL,
+
+	END_ALL,
+
+};
+
+static const char *const sm_stats_human_read[] = {
+	"Alloc",
+	"Free",
+	"Lock",
+	"Unlock",
+	"Map",
+	"Cache Flush",
+	"Cache Invalidate",
+};
+
+typedef int (*VC_SM_SHOW) (struct seq_file *s, void *v);
+struct SM_PDE_T {
+	VC_SM_SHOW show;          /* Debug fs function hookup. */
+	struct dentry *dir_entry; /* Debug fs directory entry. */
+	void *priv_data;          /* Private data */
+
+};
+
+/* Single resource allocation tracked for all devices.
+*/
+struct sm_mmap {
+	struct list_head map_list;	/* Linked list of maps. */
+
+	struct SM_RESOURCE_T *resource;	/* Pointer to the resource. */
+
+	pid_t res_pid;		/* PID owning that resource. */
+	unsigned int res_vc_hdl;	/* Resource handle (videocore). */
+	unsigned int res_usr_hdl;	/* Resource handle (user). */
+
+	long unsigned int res_addr;	/* Mapped virtual address. */
+	struct vm_area_struct *vma;	/* VM area for this mapping. */
+	unsigned int ref_count;	/* Reference count to this vma. */
+
+	/* Used to link maps associated with a resource. */
+	struct list_head resource_map_list;
+};
+
+/* Single resource allocation tracked for each opened device.
+*/
+struct SM_RESOURCE_T {
+	struct list_head resource_list;	/* List of resources. */
+	struct list_head global_resource_list;	/* Global list of resources. */
+
+	pid_t pid;		/* PID owning that resource. */
+	uint32_t res_guid;	/* Unique identifier. */
+	uint32_t lock_count;	/* Lock count for this resource. */
+	uint32_t ref_count;	/* Ref count for this resource. */
+
+	uint32_t res_handle;	/* Resource allocation handle. */
+	void *res_base_mem;	/* Resource base memory address. */
+	uint32_t res_size;	/* Resource size allocated. */
+	enum vmcs_sm_cache_e res_cached;	/* Resource cache type. */
+	struct SM_RESOURCE_T *res_shared;	/* Shared resource */
+
+	enum SM_STATS_T res_stats[END_ALL];	/* Resource statistics. */
+
+	uint8_t map_count;	/* Counter of mappings for this resource. */
+	struct list_head map_list;	/* Maps associated with a resource. */
+
+	struct SM_PRIV_DATA_T *private;
+};
+
+/* Private file data associated with each opened device.
+*/
+struct SM_PRIV_DATA_T {
+	struct list_head resource_list; /* List of resources. */
+
+	pid_t pid;                      /* PID of creator. */
+
+	struct dentry *dir_pid;	   /* Debug fs entries root. */
+	struct SM_PDE_T dir_stats; /* Debug fs entries statistics sub-tree. */
+	struct SM_PDE_T dir_res;   /* Debug fs resource sub-tree. */
+
+	int restart_sys;           /* Tracks restart on interrupt. */
+	VC_SM_MSG_TYPE int_action; /* Interrupted action. */
+	uint32_t int_trans_id;     /* Interrupted transaction. */
+
+};
+
+/* Global state information.
+*/
+struct SM_STATE_T {
+	VC_VCHI_SM_HANDLE_T sm_handle;	/* Handle for videocore service. */
+	struct dentry *dir_root;   /* Debug fs entries root. */
+	struct dentry *dir_alloc;  /* Debug fs entries allocations. */
+	struct SM_PDE_T dir_stats; /* Debug fs entries statistics sub-tree. */
+	struct SM_PDE_T dir_state; /* Debug fs entries state sub-tree. */
+	struct dentry *debug;      /* Debug fs entries debug. */
+
+	struct mutex map_lock;          /* Global map lock. */
+	struct list_head map_list;      /* List of maps. */
+	struct list_head resource_list;	/* List of resources. */
+
+	enum SM_STATS_T deceased[END_ALL];    /* Natural termination stats. */
+	enum SM_STATS_T terminated[END_ALL];  /* Forced termination stats. */
+	uint32_t res_deceased_cnt;	      /* Natural termination counter. */
+	uint32_t res_terminated_cnt;	      /* Forced termination counter. */
+
+	struct cdev sm_cdev;	/* Device. */
+	dev_t sm_devid;		/* Device identifier. */
+	struct class *sm_class;	/* Class. */
+	struct device *sm_dev;	/* Device. */
+
+	struct SM_PRIV_DATA_T *data_knl;    /* Kernel internal data tracking. */
+
+	struct mutex lock;	/* Global lock. */
+	uint32_t guid;		/* GUID (next) tracker. */
+
+};
+
+/* ---- Private Variables ----------------------------------------------- */
+
+static struct SM_STATE_T *sm_state;
+static int sm_inited;
+
+static const char *const sm_cache_map_vector[] = {
+	"(null)",
+	"host",
+	"videocore",
+	"host+videocore",
+};
+
+/* ---- Private Function Prototypes -------------------------------------- */
+
+/* ---- Private Functions ------------------------------------------------ */
+
+static inline unsigned vcaddr_to_pfn(unsigned long vc_addr)
+{
+	unsigned long pfn = vc_addr & 0x3FFFFFFF;
+	pfn += mm_vc_mem_phys_addr;
+	pfn >>= PAGE_SHIFT;
+	return pfn;
+}
+
+/* Carries over to the state statistics the statistics once owned by a deceased
+** resource.
+*/
+static void vc_sm_resource_deceased(struct SM_RESOURCE_T *p_res, int terminated)
+{
+	if (sm_state != NULL) {
+		if (p_res != NULL) {
+			int ix;
+
+			if (terminated)
+				sm_state->res_terminated_cnt++;
+			else
+				sm_state->res_deceased_cnt++;
+
+			for (ix = 0; ix < END_ALL; ix++) {
+				if (terminated)
+					sm_state->terminated[ix] +=
+					    p_res->res_stats[ix];
+				else
+					sm_state->deceased[ix] +=
+					    p_res->res_stats[ix];
+			}
+		}
+	}
+}
+
+/* Fetch a videocore handle corresponding to a mapping of the pid+address
+** returns 0 (ie NULL) if no such handle exists in the global map.
+*/
+static unsigned int vmcs_sm_vc_handle_from_pid_and_address(unsigned int pid,
+							   unsigned int addr)
+{
+	struct sm_mmap *map = NULL;
+	unsigned int handle = 0;
+
+	if (!sm_state || addr == 0)
+		goto out;
+
+	mutex_lock(&(sm_state->map_lock));
+
+	/* Lookup the resource.
+	 */
+	if (!list_empty(&sm_state->map_list)) {
+		list_for_each_entry(map, &sm_state->map_list, map_list) {
+			if (map->res_pid != pid || map->res_addr != addr)
+				continue;
+
+			pr_debug("[%s]: global map %p (pid %u, addr %lx) -> vc-hdl %x (usr-hdl %x)\n",
+				__func__, map, map->res_pid, map->res_addr,
+				map->res_vc_hdl, map->res_usr_hdl);
+
+			handle = map->res_vc_hdl;
+			break;
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+out:
+	/* Use a debug log here as it may be a valid situation that we query
+	 ** for something that is not mapped, we do not want a kernel log each
+	 ** time around.
+	 **
+	 ** There are other error log that would pop up accordingly if someone
+	 ** subsequently tries to use something invalid after being told not to
+	 ** use it...
+	 */
+	if (handle == 0) {
+		pr_debug("[%s]: not a valid map (pid %u, addr %x)\n",
+			__func__, pid, addr);
+	}
+
+	return handle;
+}
+
+/* Fetch a user handle corresponding to a mapping of the pid+address
+** returns 0 (ie NULL) if no such handle exists in the global map.
+*/
+static unsigned int vmcs_sm_usr_handle_from_pid_and_address(unsigned int pid,
+							    unsigned int addr)
+{
+	struct sm_mmap *map = NULL;
+	unsigned int handle = 0;
+
+	if (!sm_state || addr == 0)
+		goto out;
+
+	mutex_lock(&(sm_state->map_lock));
+
+	/* Lookup the resource.
+	 */
+	if (!list_empty(&sm_state->map_list)) {
+		list_for_each_entry(map, &sm_state->map_list, map_list) {
+			if (map->res_pid != pid || map->res_addr != addr)
+				continue;
+
+			pr_debug("[%s]: global map %p (pid %u, addr %lx) -> usr-hdl %x (vc-hdl %x)\n",
+				__func__, map, map->res_pid, map->res_addr,
+				map->res_usr_hdl, map->res_vc_hdl);
+
+			handle = map->res_usr_hdl;
+			break;
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+out:
+	/* Use a debug log here as it may be a valid situation that we query
+	 * for something that is not mapped yet.
+	 *
+	 * There are other error log that would pop up accordingly if someone
+	 * subsequently tries to use something invalid after being told not to
+	 * use it...
+	 */
+	if (handle == 0)
+		pr_debug("[%s]: not a valid map (pid %u, addr %x)\n",
+			__func__, pid, addr);
+
+	return handle;
+}
+
+#if defined(DO_NOT_USE)
+/* Fetch an address corresponding to a mapping of the pid+handle
+** returns 0 (ie NULL) if no such address exists in the global map.
+*/
+static unsigned int vmcs_sm_usr_address_from_pid_and_vc_handle(unsigned int pid,
+							       unsigned int hdl)
+{
+	struct sm_mmap *map = NULL;
+	unsigned int addr = 0;
+
+	if (sm_state == NULL || hdl == 0)
+		goto out;
+
+	mutex_lock(&(sm_state->map_lock));
+
+	/* Lookup the resource.
+	 */
+	if (!list_empty(&sm_state->map_list)) {
+		list_for_each_entry(map, &sm_state->map_list, map_list) {
+			if (map->res_pid != pid || map->res_vc_hdl != hdl)
+				continue;
+
+			pr_debug("[%s]: global map %p (pid %u, vc-hdl %x, usr-hdl %x) -> addr %lx\n",
+				__func__, map, map->res_pid, map->res_vc_hdl,
+				map->res_usr_hdl, map->res_addr);
+
+			addr = map->res_addr;
+			break;
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+out:
+	/* Use a debug log here as it may be a valid situation that we query
+	 ** for something that is not mapped, we do not want a kernel log each
+	 ** time around.
+	 **
+	 ** There are other error log that would pop up accordingly if someone
+	 ** subsequently tries to use something invalid after being told not to
+	 ** use it...
+	 */
+	if (addr == 0)
+		pr_debug("[%s]: not a valid map (pid %u, hdl %x)\n",
+			__func__, pid, hdl);
+
+	return addr;
+}
+#endif
+
+/* Fetch an address corresponding to a mapping of the pid+handle
+** returns 0 (ie NULL) if no such address exists in the global map.
+*/
+static unsigned int vmcs_sm_usr_address_from_pid_and_usr_handle(unsigned int
+								pid,
+								unsigned int
+								hdl)
+{
+	struct sm_mmap *map = NULL;
+	unsigned int addr = 0;
+
+	if (sm_state == NULL || hdl == 0)
+		goto out;
+
+	mutex_lock(&(sm_state->map_lock));
+
+	/* Lookup the resource.
+	 */
+	if (!list_empty(&sm_state->map_list)) {
+		list_for_each_entry(map, &sm_state->map_list, map_list) {
+			if (map->res_pid != pid || map->res_usr_hdl != hdl)
+				continue;
+
+			pr_debug("[%s]: global map %p (pid %u, vc-hdl %x, usr-hdl %x) -> addr %lx\n",
+				__func__, map, map->res_pid, map->res_vc_hdl,
+				map->res_usr_hdl, map->res_addr);
+
+			addr = map->res_addr;
+			break;
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+out:
+	/* Use a debug log here as it may be a valid situation that we query
+	 * for something that is not mapped, we do not want a kernel log each
+	 * time around.
+	 *
+	 * There are other error log that would pop up accordingly if someone
+	 * subsequently tries to use something invalid after being told not to
+	 * use it...
+	 */
+	if (addr == 0)
+		pr_debug("[%s]: not a valid map (pid %u, hdl %x)\n", __func__,
+				pid, hdl);
+
+	return addr;
+}
+
+/* Adds a resource mapping to the global data list.
+*/
+static void vmcs_sm_add_map(struct SM_STATE_T *state,
+			    struct SM_RESOURCE_T *resource, struct sm_mmap *map)
+{
+	mutex_lock(&(state->map_lock));
+
+	/* Add to the global list of mappings
+	 */
+	list_add(&map->map_list, &state->map_list);
+
+	/* Add to the list of mappings for this resource
+	 */
+	list_add(&map->resource_map_list, &resource->map_list);
+	resource->map_count++;
+
+	mutex_unlock(&(state->map_lock));
+
+	pr_debug("[%s]: added map %p (pid %u, vc-hdl %x, usr-hdl %x, addr %lx)\n",
+		__func__, map, map->res_pid, map->res_vc_hdl,
+		map->res_usr_hdl, map->res_addr);
+}
+
+/* Removes a resource mapping from the global data list.
+*/
+static void vmcs_sm_remove_map(struct SM_STATE_T *state,
+			       struct SM_RESOURCE_T *resource,
+			       struct sm_mmap *map)
+{
+	mutex_lock(&(state->map_lock));
+
+	/* Remove from the global list of mappings
+	 */
+	list_del(&map->map_list);
+
+	/* Remove from the list of mapping for this resource
+	 */
+	list_del(&map->resource_map_list);
+	if (resource->map_count > 0)
+		resource->map_count--;
+
+	mutex_unlock(&(state->map_lock));
+
+	pr_debug("[%s]: removed map %p (pid %d, vc-hdl %x, usr-hdl %x, addr %lx)\n",
+		__func__, map, map->res_pid, map->res_vc_hdl, map->res_usr_hdl,
+		map->res_addr);
+
+	kfree(map);
+}
+
+/* Read callback for the global state proc entry.
+*/
+static int vc_sm_global_state_show(struct seq_file *s, void *v)
+{
+	struct sm_mmap *map = NULL;
+	int map_count = 0;
+
+	if (sm_state == NULL)
+		return 0;
+
+	seq_printf(s, "\nVC-ServiceHandle     0x%x\n",
+		   (unsigned int)sm_state->sm_handle);
+
+	/* Log all applicable mapping(s).
+	 */
+
+	mutex_lock(&(sm_state->map_lock));
+
+	if (!list_empty(&sm_state->map_list)) {
+		list_for_each_entry(map, &sm_state->map_list, map_list) {
+			map_count++;
+
+			seq_printf(s, "\nMapping                0x%x\n",
+				   (unsigned int)map);
+			seq_printf(s, "           TGID        %u\n",
+				   map->res_pid);
+			seq_printf(s, "           VC-HDL      0x%x\n",
+				   map->res_vc_hdl);
+			seq_printf(s, "           USR-HDL     0x%x\n",
+				   map->res_usr_hdl);
+			seq_printf(s, "           USR-ADDR    0x%lx\n",
+				   map->res_addr);
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+	seq_printf(s, "\n\nTotal map count:   %d\n\n", map_count);
+
+	return 0;
+}
+
+static int vc_sm_global_statistics_show(struct seq_file *s, void *v)
+{
+	int ix;
+
+	/* Global state tracked statistics.
+	 */
+	if (sm_state != NULL) {
+		seq_puts(s, "\nDeceased Resources Statistics\n");
+
+		seq_printf(s, "\nNatural Cause (%u occurences)\n",
+			   sm_state->res_deceased_cnt);
+		for (ix = 0; ix < END_ATTEMPT; ix++) {
+			if (sm_state->deceased[ix] > 0) {
+				seq_printf(s, "                %u\t%s\n",
+					   sm_state->deceased[ix],
+					   sm_stats_human_read[ix]);
+			}
+		}
+		seq_puts(s, "\n");
+		for (ix = 0; ix < END_ATTEMPT; ix++) {
+			if (sm_state->deceased[ix + END_ATTEMPT] > 0) {
+				seq_printf(s, "                %u\tFAILED %s\n",
+					   sm_state->deceased[ix + END_ATTEMPT],
+					   sm_stats_human_read[ix]);
+			}
+		}
+
+		seq_printf(s, "\nForcefull (%u occurences)\n",
+			   sm_state->res_terminated_cnt);
+		for (ix = 0; ix < END_ATTEMPT; ix++) {
+			if (sm_state->terminated[ix] > 0) {
+				seq_printf(s, "                %u\t%s\n",
+					   sm_state->terminated[ix],
+					   sm_stats_human_read[ix]);
+			}
+		}
+		seq_puts(s, "\n");
+		for (ix = 0; ix < END_ATTEMPT; ix++) {
+			if (sm_state->terminated[ix + END_ATTEMPT] > 0) {
+				seq_printf(s, "                %u\tFAILED %s\n",
+					   sm_state->terminated[ix +
+								END_ATTEMPT],
+					   sm_stats_human_read[ix]);
+			}
+		}
+	}
+
+	return 0;
+}
+
+#if 0
+/* Read callback for the statistics proc entry.
+*/
+static int vc_sm_statistics_show(struct seq_file *s, void *v)
+{
+	int ix;
+	struct SM_PRIV_DATA_T *file_data;
+	struct SM_RESOURCE_T *resource;
+	int res_count = 0;
+	struct SM_PDE_T *p_pde;
+
+	p_pde = (struct SM_PDE_T *)(s->private);
+	file_data = (struct SM_PRIV_DATA_T *)(p_pde->priv_data);
+
+	if (file_data == NULL)
+		return 0;
+
+	/* Per process statistics.
+	 */
+
+	seq_printf(s, "\nStatistics for TGID %d\n", file_data->pid);
+
+	mutex_lock(&(sm_state->map_lock));
+
+	if (!list_empty(&file_data->resource_list)) {
+		list_for_each_entry(resource, &file_data->resource_list,
+				    resource_list) {
+			res_count++;
+
+			seq_printf(s, "\nGUID:         0x%x\n\n",
+				   resource->res_guid);
+			for (ix = 0; ix < END_ATTEMPT; ix++) {
+				if (resource->res_stats[ix] > 0) {
+					seq_printf(s,
+						   "                %u\t%s\n",
+						   resource->res_stats[ix],
+						   sm_stats_human_read[ix]);
+				}
+			}
+			seq_puts(s, "\n");
+			for (ix = 0; ix < END_ATTEMPT; ix++) {
+				if (resource->res_stats[ix + END_ATTEMPT] > 0) {
+					seq_printf(s,
+						   "                %u\tFAILED %s\n",
+						   resource->res_stats[
+						   ix + END_ATTEMPT],
+						   sm_stats_human_read[ix]);
+				}
+			}
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+	seq_printf(s, "\nResources Count %d\n", res_count);
+
+	return 0;
+}
+#endif
+
+#if 0
+/* Read callback for the allocation proc entry.  */
+static int vc_sm_alloc_show(struct seq_file *s, void *v)
+{
+	struct SM_PRIV_DATA_T *file_data;
+	struct SM_RESOURCE_T *resource;
+	int alloc_count = 0;
+	struct SM_PDE_T *p_pde;
+
+	p_pde = (struct SM_PDE_T *)(s->private);
+	file_data = (struct SM_PRIV_DATA_T *)(p_pde->priv_data);
+
+	if (!file_data)
+		return 0;
+
+	/* Per process statistics.  */
+	seq_printf(s, "\nAllocation for TGID %d\n", file_data->pid);
+
+	mutex_lock(&(sm_state->map_lock));
+
+	if (!list_empty(&file_data->resource_list)) {
+		list_for_each_entry(resource, &file_data->resource_list,
+				    resource_list) {
+			alloc_count++;
+
+			seq_printf(s, "\nGUID:              0x%x\n",
+				   resource->res_guid);
+			seq_printf(s, "Lock Count:        %u\n",
+				   resource->lock_count);
+			seq_printf(s, "Mapped:            %s\n",
+				   (resource->map_count ? "yes" : "no"));
+			seq_printf(s, "VC-handle:         0x%x\n",
+				   resource->res_handle);
+			seq_printf(s, "VC-address:        0x%p\n",
+				   resource->res_base_mem);
+			seq_printf(s, "VC-size (bytes):   %u\n",
+				   resource->res_size);
+			seq_printf(s, "Cache:             %s\n",
+				   sm_cache_map_vector[resource->res_cached]);
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+	seq_printf(s, "\n\nTotal allocation count: %d\n\n", alloc_count);
+
+	return 0;
+}
+#endif
+
+static int vc_sm_seq_file_show(struct seq_file *s, void *v)
+{
+	struct SM_PDE_T *sm_pde;
+
+	sm_pde = (struct SM_PDE_T *)(s->private);
+
+	if (sm_pde && sm_pde->show)
+		sm_pde->show(s, v);
+
+	return 0;
+}
+
+static int vc_sm_single_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, vc_sm_seq_file_show, inode->i_private);
+}
+
+static const struct file_operations vc_sm_debug_fs_fops = {
+	.open = vc_sm_single_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+/* Adds a resource to the private data list which tracks all the allocated
+** data.
+*/
+static void vmcs_sm_add_resource(struct SM_PRIV_DATA_T *privdata,
+				 struct SM_RESOURCE_T *resource)
+{
+	mutex_lock(&(sm_state->map_lock));
+	list_add(&resource->resource_list, &privdata->resource_list);
+	list_add(&resource->global_resource_list, &sm_state->resource_list);
+	mutex_unlock(&(sm_state->map_lock));
+
+	pr_debug("[%s]: added resource %p (base addr %p, hdl %x, size %u, cache %u)\n",
+		__func__, resource, resource->res_base_mem,
+		resource->res_handle, resource->res_size, resource->res_cached);
+}
+
+/* Locates a resource and acquire a reference on it.
+** The resource won't be deleted while there is a reference on it.
+*/
+static struct SM_RESOURCE_T *vmcs_sm_acquire_resource(struct SM_PRIV_DATA_T
+						      *private,
+						      unsigned int res_guid)
+{
+	struct SM_RESOURCE_T *resource, *ret = NULL;
+
+	mutex_lock(&(sm_state->map_lock));
+
+	list_for_each_entry(resource, &private->resource_list, resource_list) {
+		if (resource->res_guid != res_guid)
+			continue;
+
+		pr_debug("[%s]: located resource %p (guid: %x, base addr %p, hdl %x, size %u, cache %u)\n",
+			__func__, resource, resource->res_guid,
+			resource->res_base_mem, resource->res_handle,
+			resource->res_size, resource->res_cached);
+		resource->ref_count++;
+		ret = resource;
+		break;
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+	return ret;
+}
+
+/* Locates a resource and acquire a reference on it.
+** The resource won't be deleted while there is a reference on it.
+*/
+static struct SM_RESOURCE_T *vmcs_sm_acquire_first_resource(
+		struct SM_PRIV_DATA_T *private)
+{
+	struct SM_RESOURCE_T *resource, *ret = NULL;
+
+	mutex_lock(&(sm_state->map_lock));
+
+	list_for_each_entry(resource, &private->resource_list, resource_list) {
+		pr_debug("[%s]: located resource %p (guid: %x, base addr %p, hdl %x, size %u, cache %u)\n",
+			__func__, resource, resource->res_guid,
+			resource->res_base_mem, resource->res_handle,
+			resource->res_size, resource->res_cached);
+		resource->ref_count++;
+		ret = resource;
+		break;
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+	return ret;
+}
+
+/* Locates a resource and acquire a reference on it.
+** The resource won't be deleted while there is a reference on it.
+*/
+static struct SM_RESOURCE_T *vmcs_sm_acquire_global_resource(unsigned int
+							     res_guid)
+{
+	struct SM_RESOURCE_T *resource, *ret = NULL;
+
+	mutex_lock(&(sm_state->map_lock));
+
+	list_for_each_entry(resource, &sm_state->resource_list,
+			    global_resource_list) {
+		if (resource->res_guid != res_guid)
+			continue;
+
+		pr_debug("[%s]: located resource %p (guid: %x, base addr %p, hdl %x, size %u, cache %u)\n",
+			__func__, resource, resource->res_guid,
+			resource->res_base_mem, resource->res_handle,
+			resource->res_size, resource->res_cached);
+		resource->ref_count++;
+		ret = resource;
+		break;
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+	return ret;
+}
+
+/* Release a previously acquired resource.
+** The resource will be deleted when its refcount reaches 0.
+*/
+static void vmcs_sm_release_resource(struct SM_RESOURCE_T *resource, int force)
+{
+	struct SM_PRIV_DATA_T *private = resource->private;
+	struct sm_mmap *map, *map_tmp;
+	struct SM_RESOURCE_T *res_tmp;
+	int ret;
+
+	mutex_lock(&(sm_state->map_lock));
+
+	if (--resource->ref_count) {
+		if (force)
+			pr_err("[%s]: resource %p in use\n", __func__, resource);
+
+		mutex_unlock(&(sm_state->map_lock));
+		return;
+	}
+
+	/* Time to free the resource. Start by removing it from the list */
+	list_del(&resource->resource_list);
+	list_del(&resource->global_resource_list);
+
+	/* Walk the global resource list, find out if the resource is used
+	 * somewhere else. In which case we don't want to delete it.
+	 */
+	list_for_each_entry(res_tmp, &sm_state->resource_list,
+			    global_resource_list) {
+		if (res_tmp->res_handle == resource->res_handle) {
+			resource->res_handle = 0;
+			break;
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+	pr_debug("[%s]: freeing data - guid %x, hdl %x, base address %p\n",
+		__func__, resource->res_guid, resource->res_handle,
+		resource->res_base_mem);
+	resource->res_stats[FREE]++;
+
+	/* Make sure the resource we're removing is unmapped first */
+	if (resource->map_count && !list_empty(&resource->map_list)) {
+		down_write(&current->mm->mmap_sem);
+		list_for_each_entry_safe(map, map_tmp, &resource->map_list,
+					 resource_map_list) {
+			ret =
+			    do_munmap(current->mm, map->res_addr,
+				      resource->res_size);
+			if (ret) {
+				pr_err("[%s]: could not unmap resource %p\n",
+					__func__, resource);
+			}
+		}
+		up_write(&current->mm->mmap_sem);
+	}
+
+	/* Free up the videocore allocated resource.
+	 */
+	if (resource->res_handle) {
+		VC_SM_FREE_T free = {
+			resource->res_handle, resource->res_base_mem
+		};
+		int status = vc_vchi_sm_free(sm_state->sm_handle, &free,
+					     &private->int_trans_id);
+		if (status != 0 && status != -EINTR) {
+			pr_err("[%s]: failed to free memory on videocore (status: %u, trans_id: %u)\n",
+			     __func__, status, private->int_trans_id);
+			resource->res_stats[FREE_FAIL]++;
+			ret = -EPERM;
+		}
+	}
+
+	/* Free up the shared resource.
+	 */
+	if (resource->res_shared)
+		vmcs_sm_release_resource(resource->res_shared, 0);
+
+	/* Free up the local resource tracking this allocation.
+	 */
+	vc_sm_resource_deceased(resource, force);
+	kfree(resource);
+}
+
+/* Dump the map table for the driver.  If process is -1, dumps the whole table,
+** if process is a valid pid (non -1) dump only the entries associated with the
+** pid of interest.
+*/
+static void vmcs_sm_host_walk_map_per_pid(int pid)
+{
+	struct sm_mmap *map = NULL;
+
+	/* Make sure the device was started properly.
+	 */
+	if (sm_state == NULL) {
+		pr_err("[%s]: invalid device\n", __func__);
+		return;
+	}
+
+	mutex_lock(&(sm_state->map_lock));
+
+	/* Log all applicable mapping(s).
+	 */
+	if (!list_empty(&sm_state->map_list)) {
+		list_for_each_entry(map, &sm_state->map_list, map_list) {
+			if (pid == -1 || map->res_pid == pid) {
+				pr_info("[%s]: tgid: %u - vc-hdl: %x, usr-hdl: %x, usr-addr: %lx\n",
+				     __func__, map->res_pid, map->res_vc_hdl,
+				     map->res_usr_hdl, map->res_addr);
+			}
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+	return;
+}
+
+/* Dump the allocation table from host side point of view.  This only dumps the
+** data allocated for this process/device referenced by the file_data.
+*/
+static void vmcs_sm_host_walk_alloc(struct SM_PRIV_DATA_T *file_data)
+{
+	struct SM_RESOURCE_T *resource = NULL;
+
+	/* Make sure the device was started properly.
+	 */
+	if ((sm_state == NULL) || (file_data == NULL)) {
+		pr_err("[%s]: invalid device\n", __func__);
+		return;
+	}
+
+	mutex_lock(&(sm_state->map_lock));
+
+	if (!list_empty(&file_data->resource_list)) {
+		list_for_each_entry(resource, &file_data->resource_list,
+				    resource_list) {
+			pr_info("[%s]: guid: %x - hdl: %x, vc-mem: %p, size: %u, cache: %u\n",
+			     __func__, resource->res_guid, resource->res_handle,
+			     resource->res_base_mem, resource->res_size,
+			     resource->res_cached);
+		}
+	}
+
+	mutex_unlock(&(sm_state->map_lock));
+
+	return;
+}
+
+/* Create support for private data tracking.
+*/
+static struct SM_PRIV_DATA_T *vc_sm_create_priv_data(pid_t id)
+{
+	char alloc_name[32];
+	struct SM_PRIV_DATA_T *file_data = NULL;
+
+	/* Allocate private structure. */
+	file_data = kzalloc(sizeof(*file_data), GFP_KERNEL);
+
+	if (!file_data) {
+		pr_err("[%s]: cannot allocate file data\n", __func__);
+		goto out;
+	}
+
+	snprintf(alloc_name, sizeof(alloc_name), "%d", id);
+
+	INIT_LIST_HEAD(&file_data->resource_list);
+	file_data->pid = id;
+	file_data->dir_pid = debugfs_create_dir(alloc_name,
+			sm_state->dir_alloc);
+#if 0
+  /* TODO: fix this to support querying statistics per pid */
+
+	if (IS_ERR_OR_NULL(file_data->dir_pid)) {
+		file_data->dir_pid = NULL;
+	} else {
+		struct dentry *dir_entry;
+
+		dir_entry = debugfs_create_file(VC_SM_RESOURCES, S_IRUGO,
+				file_data->dir_pid, file_data,
+				vc_sm_debug_fs_fops);
+
+		file_data->dir_res.dir_entry = dir_entry;
+		file_data->dir_res.priv_data = file_data;
+		file_data->dir_res.show = &vc_sm_alloc_show;
+
+		dir_entry = debugfs_create_file(VC_SM_STATS, S_IRUGO,
+				file_data->dir_pid, file_data,
+				vc_sm_debug_fs_fops);
+
+		file_data->dir_res.dir_entry = dir_entry;
+		file_data->dir_res.priv_data = file_data;
+		file_data->dir_res.show = &vc_sm_statistics_show;
+	}
+	pr_debug("[%s]: private data allocated %p\n", __func__, file_data);
+
+#endif
+out:
+	return file_data;
+}
+
+/* Open the device.  Creates a private state to help track all allocation
+** associated with this device.
+*/
+static int vc_sm_open(struct inode *inode, struct file *file)
+{
+	int ret = 0;
+
+	/* Make sure the device was started properly.
+	 */
+	if (!sm_state) {
+		pr_err("[%s]: invalid device\n", __func__);
+		ret = -EPERM;
+		goto out;
+	}
+
+	file->private_data = vc_sm_create_priv_data(current->tgid);
+	if (file->private_data == NULL) {
+		pr_err("[%s]: failed to create data tracker\n", __func__);
+
+		ret = -ENOMEM;
+		goto out;
+	}
+
+out:
+	return ret;
+}
+
+/* Close the device.  Free up all resources still associated with this device
+** at the time.
+*/
+static int vc_sm_release(struct inode *inode, struct file *file)
+{
+	struct SM_PRIV_DATA_T *file_data =
+	    (struct SM_PRIV_DATA_T *)file->private_data;
+	struct SM_RESOURCE_T *resource;
+	int ret = 0;
+
+	/* Make sure the device was started properly.
+	 */
+	if (sm_state == NULL || file_data == NULL) {
+		pr_err("[%s]: invalid device\n", __func__);
+		ret = -EPERM;
+		goto out;
+	}
+
+	pr_debug("[%s]: using private data %p\n", __func__, file_data);
+
+	if (file_data->restart_sys == -EINTR) {
+		VC_SM_ACTION_CLEAN_T action_clean;
+
+		pr_debug("[%s]: releasing following EINTR on %u (trans_id: %u) (likely due to signal)...\n",
+			__func__, file_data->int_action,
+			file_data->int_trans_id);
+
+		action_clean.res_action = file_data->int_action;
+		action_clean.action_trans_id = file_data->int_trans_id;
+
+		vc_vchi_sm_clean_up(sm_state->sm_handle, &action_clean);
+	}
+
+	while ((resource = vmcs_sm_acquire_first_resource(file_data)) != NULL) {
+		vmcs_sm_release_resource(resource, 0);
+		vmcs_sm_release_resource(resource, 1);
+	}
+
+	/* Remove the corresponding proc entry. */
+	debugfs_remove_recursive(file_data->dir_pid);
+
+	/* Terminate the private data.
+	 */
+	kfree(file_data);
+
+out:
+	return ret;
+}
+
+static void vcsm_vma_open(struct vm_area_struct *vma)
+{
+	struct sm_mmap *map = (struct sm_mmap *)vma->vm_private_data;
+
+	pr_debug("[%s]: virt %lx-%lx, pid %i, pfn %i\n",
+		__func__, vma->vm_start, vma->vm_end, (int)current->tgid,
+		(int)vma->vm_pgoff);
+
+	map->ref_count++;
+}
+
+static void vcsm_vma_close(struct vm_area_struct *vma)
+{
+	struct sm_mmap *map = (struct sm_mmap *)vma->vm_private_data;
+
+	pr_debug("[%s]: virt %lx-%lx, pid %i, pfn %i\n",
+		__func__, vma->vm_start, vma->vm_end, (int)current->tgid,
+		(int)vma->vm_pgoff);
+
+	map->ref_count--;
+
+	/* Remove from the map table.
+	 */
+	if (map->ref_count == 0)
+		vmcs_sm_remove_map(sm_state, map->resource, map);
+}
+
+static int vcsm_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+	struct sm_mmap *map = (struct sm_mmap *)vma->vm_private_data;
+	struct SM_RESOURCE_T *resource = map->resource;
+	pgoff_t page_offset;
+	unsigned long pfn;
+	int ret = 0;
+
+	/* Lock the resource if necessary.
+	 */
+	if (!resource->lock_count) {
+		VC_SM_LOCK_UNLOCK_T lock_unlock;
+		VC_SM_LOCK_RESULT_T lock_result;
+		int status;
+
+		lock_unlock.res_handle = resource->res_handle;
+		lock_unlock.res_mem = resource->res_base_mem;
+
+		pr_debug("[%s]: attempt to lock data - hdl %x, base address %p\n",
+			__func__, lock_unlock.res_handle, lock_unlock.res_mem);
+
+		/* Lock the videocore allocated resource.
+		 */
+		status = vc_vchi_sm_lock(sm_state->sm_handle,
+					 &lock_unlock, &lock_result, 0);
+		if ((status != 0) ||
+		    ((status == 0) && (lock_result.res_mem == NULL))) {
+			pr_err("[%s]: failed to lock memory on videocore (status: %u)\n",
+					__func__, status);
+			resource->res_stats[LOCK_FAIL]++;
+			return VM_FAULT_SIGBUS;
+		}
+
+		pfn = vcaddr_to_pfn((unsigned long)resource->res_base_mem);
+		outer_inv_range(__pfn_to_phys(pfn),
+				__pfn_to_phys(pfn) + resource->res_size);
+
+		resource->res_stats[LOCK]++;
+		resource->lock_count++;
+
+		/* Keep track of the new base memory.
+		 */
+		if ((lock_result.res_mem != NULL) &&
+		    (lock_result.res_old_mem != NULL) &&
+		    (lock_result.res_mem != lock_result.res_old_mem)) {
+			resource->res_base_mem = lock_result.res_mem;
+		}
+	}
+
+	/* We don't use vmf->pgoff since that has the fake offset */
+	page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start);
+	pfn = (uint32_t)resource->res_base_mem & 0x3FFFFFFF;
+	pfn += mm_vc_mem_phys_addr;
+	pfn += page_offset;
+	pfn >>= PAGE_SHIFT;
+
+	/* Finally, remap it */
+	ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn);
+
+	switch (ret) {
+	case 0:
+	case -ERESTARTSYS:
+		return VM_FAULT_NOPAGE;
+	case -ENOMEM:
+	case -EAGAIN:
+		return VM_FAULT_OOM;
+	default:
+		return VM_FAULT_SIGBUS;
+	}
+}
+
+static struct vm_operations_struct vcsm_vm_ops = {
+	.open = vcsm_vma_open,
+	.close = vcsm_vma_close,
+	.fault = vcsm_vma_fault,
+};
+
+/* Walks a VMA and clean each valid page from the cache */
+static void vcsm_vma_cache_clean_page_range(unsigned long addr,
+					    unsigned long end)
+{
+	pgd_t *pgd;
+	pud_t *pud;
+	pmd_t *pmd;
+	pte_t *pte;
+	unsigned long pgd_next, pud_next, pmd_next;
+
+	if (addr >= end)
+		return;
+
+	/* Walk PGD */
+	pgd = pgd_offset(current->mm, addr);
+	do {
+		pgd_next = pgd_addr_end(addr, end);
+
+		if (pgd_none(*pgd) || pgd_bad(*pgd))
+			continue;
+
+		/* Walk PUD */
+		pud = pud_offset(pgd, addr);
+		do {
+			pud_next = pud_addr_end(addr, pgd_next);
+			if (pud_none(*pud) || pud_bad(*pud))
+				continue;
+
+			/* Walk PMD */
+			pmd = pmd_offset(pud, addr);
+			do {
+				pmd_next = pmd_addr_end(addr, pud_next);
+				if (pmd_none(*pmd) || pmd_bad(*pmd))
+					continue;
+
+				/* Walk PTE */
+				pte = pte_offset_map(pmd, addr);
+				do {
+					if (pte_none(*pte)
+					    || !pte_present(*pte))
+						continue;
+
+					/* Clean + invalidate */
+					dmac_flush_range((const void *) addr,
+							 (const void *)
+							 (addr + PAGE_SIZE));
+
+				} while (pte++, addr +=
+					 PAGE_SIZE, addr != pmd_next);
+				pte_unmap(pte);
+
+			} while (pmd++, addr = pmd_next, addr != pud_next);
+
+		} while (pud++, addr = pud_next, addr != pgd_next);
+	} while (pgd++, addr = pgd_next, addr != end);
+}
+
+/* Map an allocated data into something that the user space.
+*/
+static int vc_sm_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	int ret = 0;
+	struct SM_PRIV_DATA_T *file_data =
+	    (struct SM_PRIV_DATA_T *)file->private_data;
+	struct SM_RESOURCE_T *resource = NULL;
+	struct sm_mmap *map = NULL;
+
+	/* Make sure the device was started properly.
+	 */
+	if ((sm_state == NULL) || (file_data == NULL)) {
+		pr_err("[%s]: invalid device\n", __func__);
+		return -EPERM;
+	}
+
+	pr_debug("[%s]: private data %p, guid %x\n", __func__, file_data,
+		((unsigned int)vma->vm_pgoff << PAGE_SHIFT));
+
+	/* We lookup to make sure that the data we are being asked to mmap is
+	 ** something that we allocated.
+	 **
+	 ** We use the offset information as the key to tell us which resource
+	 ** we are mapping.
+	 */
+	resource = vmcs_sm_acquire_resource(file_data,
+					    ((unsigned int)vma->vm_pgoff <<
+					     PAGE_SHIFT));
+	if (resource == NULL) {
+		pr_err("[%s]: failed to locate resource for guid %x\n", __func__,
+			((unsigned int)vma->vm_pgoff << PAGE_SHIFT));
+		return -ENOMEM;
+	}
+
+	pr_debug("[%s]: guid %x, tgid %u, %u, %u\n",
+		__func__, resource->res_guid, current->tgid, resource->pid,
+		file_data->pid);
+
+	/* Check permissions.
+	 */
+	if (resource->pid && (resource->pid != current->tgid)) {
+		pr_err("[%s]: current tgid %u != %u owner\n",
+			__func__, current->tgid, resource->pid);
+		ret = -EPERM;
+		goto error;
+	}
+
+	/* Verify that what we are asked to mmap is proper.
+	 */
+	if (resource->res_size != (unsigned int)(vma->vm_end - vma->vm_start)) {
+		pr_err("[%s]: size inconsistency (resource: %u - mmap: %u)\n",
+			__func__,
+			resource->res_size,
+			(unsigned int)(vma->vm_end - vma->vm_start));
+
+		ret = -EINVAL;
+		goto error;
+	}
+
+	/* Keep track of the tuple in the global resource list such that one
+	 * can do a mapping lookup for address/memory handle.
+	 */
+	map = kzalloc(sizeof(*map), GFP_KERNEL);
+	if (map == NULL) {
+		pr_err("[%s]: failed to allocate global tracking resource\n",
+			__func__);
+		ret = -ENOMEM;
+		goto error;
+	}
+
+	map->res_pid = current->tgid;
+	map->res_vc_hdl = resource->res_handle;
+	map->res_usr_hdl = resource->res_guid;
+	map->res_addr = (long unsigned int)vma->vm_start;
+	map->resource = resource;
+	map->vma = vma;
+	vmcs_sm_add_map(sm_state, resource, map);
+
+	/* We are not actually mapping the pages, we just provide a fault
+	 ** handler to allow pages to be mapped when accessed
+	 */
+	vma->vm_flags |=
+	    VM_IO | VM_PFNMAP | VM_DONTCOPY | VM_DONTEXPAND;
+	vma->vm_ops = &vcsm_vm_ops;
+	vma->vm_private_data = map;
+
+	/* vm_pgoff is the first PFN of the mapped memory */
+	vma->vm_pgoff = (unsigned long)resource->res_base_mem & 0x3FFFFFFF;
+	vma->vm_pgoff += mm_vc_mem_phys_addr;
+	vma->vm_pgoff >>= PAGE_SHIFT;
+
+	if ((resource->res_cached == VMCS_SM_CACHE_NONE) ||
+	    (resource->res_cached == VMCS_SM_CACHE_VC)) {
+		/* Allocated non host cached memory, honour it.
+		 */
+		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+	}
+
+	pr_debug("[%s]: resource %p (guid %x) - cnt %u, base address %p, handle %x, size %u (%u), cache %u\n",
+		__func__,
+		resource, resource->res_guid, resource->lock_count,
+		resource->res_base_mem, resource->res_handle,
+		resource->res_size, (unsigned int)(vma->vm_end - vma->vm_start),
+		resource->res_cached);
+
+	pr_debug("[%s]: resource %p (base address %p, handle %x) - map-count %d, usr-addr %x\n",
+		__func__, resource, resource->res_base_mem,
+		resource->res_handle, resource->map_count,
+		(unsigned int)vma->vm_start);
+
+	vcsm_vma_open(vma);
+	resource->res_stats[MAP]++;
+	vmcs_sm_release_resource(resource, 0);
+	return 0;
+
+error:
+	vmcs_sm_release_resource(resource, 0);
+	resource->res_stats[MAP_FAIL]++;
+	return ret;
+}
+
+/* Allocate a shared memory handle and block.
+*/
+int vc_sm_ioctl_alloc(struct SM_PRIV_DATA_T *private,
+		      struct vmcs_sm_ioctl_alloc *ioparam)
+{
+	int ret = 0;
+	int status;
+	struct SM_RESOURCE_T *resource;
+	VC_SM_ALLOC_T alloc = { 0 };
+	VC_SM_ALLOC_RESULT_T result = { 0 };
+
+	/* Setup our allocation parameters */
+	alloc.type = ((ioparam->cached == VMCS_SM_CACHE_VC)
+		      || (ioparam->cached ==
+			  VMCS_SM_CACHE_BOTH)) ? VC_SM_ALLOC_CACHED :
+	    VC_SM_ALLOC_NON_CACHED;
+	alloc.base_unit = ioparam->size;
+	alloc.num_unit = ioparam->num;
+	alloc.allocator = current->tgid;
+	/* Align to kernel page size */
+	alloc.alignement = 4096;
+	/* Align the size to the kernel page size */
+	alloc.base_unit =
+	    (alloc.base_unit + alloc.alignement - 1) & ~(alloc.alignement - 1);
+	if (*ioparam->name) {
+		memcpy(alloc.name, ioparam->name, sizeof(alloc.name) - 1);
+	} else {
+		memcpy(alloc.name, VMCS_SM_RESOURCE_NAME_DEFAULT,
+		       sizeof(VMCS_SM_RESOURCE_NAME_DEFAULT));
+	}
+
+	pr_debug("[%s]: attempt to allocate \"%s\" data - type %u, base %u (%u), num %u, alignement %u\n",
+		__func__, alloc.name, alloc.type, ioparam->size,
+		alloc.base_unit, alloc.num_unit, alloc.alignement);
+
+	/* Allocate local resource to track this allocation.
+	 */
+	resource = kzalloc(sizeof(*resource), GFP_KERNEL);
+	if (!resource) {
+		ret = -ENOMEM;
+		goto error;
+	}
+	INIT_LIST_HEAD(&resource->map_list);
+	resource->ref_count++;
+	resource->pid = current->tgid;
+
+	/* Allocate the videocore resource.
+	 */
+	status = vc_vchi_sm_alloc(sm_state->sm_handle, &alloc, &result,
+				  &private->int_trans_id);
+	if (status == -EINTR) {
+		pr_debug("[%s]: requesting allocate memory action restart (trans_id: %u)\n",
+			__func__, private->int_trans_id);
+		ret = -ERESTARTSYS;
+		private->restart_sys = -EINTR;
+		private->int_action = VC_SM_MSG_TYPE_ALLOC;
+		goto error;
+	} else if (status != 0 || (status == 0 && result.res_mem == NULL)) {
+		pr_err("[%s]: failed to allocate memory on videocore (status: %u, trans_id: %u)\n",
+		     __func__, status, private->int_trans_id);
+		ret = -ENOMEM;
+		resource->res_stats[ALLOC_FAIL]++;
+		goto error;
+	}
+
+	/* Keep track of the resource we created.
+	 */
+	resource->private = private;
+	resource->res_handle = result.res_handle;
+	resource->res_base_mem = result.res_mem;
+	resource->res_size = alloc.base_unit * alloc.num_unit;
+	resource->res_cached = ioparam->cached;
+
+	/* Kernel/user GUID.  This global identifier is used for mmap'ing the
+	 * allocated region from user space, it is passed as the mmap'ing
+	 * offset, we use it to 'hide' the videocore handle/address.
+	 */
+	mutex_lock(&sm_state->lock);
+	resource->res_guid = ++sm_state->guid;
+	mutex_unlock(&sm_state->lock);
+	resource->res_guid <<= PAGE_SHIFT;
+
+	vmcs_sm_add_resource(private, resource);
+
+	pr_debug("[%s]: allocated data - guid %x, hdl %x, base address %p, size %d, cache %d\n",
+		__func__, resource->res_guid, resource->res_handle,
+		resource->res_base_mem, resource->res_size,
+		resource->res_cached);
+
+	/* We're done */
+	resource->res_stats[ALLOC]++;
+	ioparam->handle = resource->res_guid;
+	return 0;
+
+error:
+	pr_err("[%s]: failed to allocate \"%s\" data (%i) - type %u, base %u (%u), num %u, alignment %u\n",
+	     __func__, alloc.name, ret, alloc.type, ioparam->size,
+	     alloc.base_unit, alloc.num_unit, alloc.alignement);
+	if (resource != NULL) {
+		vc_sm_resource_deceased(resource, 1);
+		kfree(resource);
+	}
+	return ret;
+}
+
+/* Share an allocate memory handle and block.
+*/
+int vc_sm_ioctl_alloc_share(struct SM_PRIV_DATA_T *private,
+			    struct vmcs_sm_ioctl_alloc_share *ioparam)
+{
+	struct SM_RESOURCE_T *resource, *shared_resource;
+	int ret = 0;
+
+	pr_debug("[%s]: attempt to share resource %u\n", __func__,
+			ioparam->handle);
+
+	shared_resource = vmcs_sm_acquire_global_resource(ioparam->handle);
+	if (shared_resource == NULL) {
+		ret = -ENOMEM;
+		goto error;
+	}
+
+	/* Allocate local resource to track this allocation.
+	 */
+	resource = kzalloc(sizeof(*resource), GFP_KERNEL);
+	if (resource == NULL) {
+		pr_err("[%s]: failed to allocate local tracking resource\n",
+			__func__);
+		ret = -ENOMEM;
+		goto error;
+	}
+	INIT_LIST_HEAD(&resource->map_list);
+	resource->ref_count++;
+	resource->pid = current->tgid;
+
+	/* Keep track of the resource we created.
+	 */
+	resource->private = private;
+	resource->res_handle = shared_resource->res_handle;
+	resource->res_base_mem = shared_resource->res_base_mem;
+	resource->res_size = shared_resource->res_size;
+	resource->res_cached = shared_resource->res_cached;
+	resource->res_shared = shared_resource;
+
+	mutex_lock(&sm_state->lock);
+	resource->res_guid = ++sm_state->guid;
+	mutex_unlock(&sm_state->lock);
+	resource->res_guid <<= PAGE_SHIFT;
+
+	vmcs_sm_add_resource(private, resource);
+
+	pr_debug("[%s]: allocated data - guid %x, hdl %x, base address %p, size %d, cache %d\n",
+		__func__, resource->res_guid, resource->res_handle,
+		resource->res_base_mem, resource->res_size,
+		resource->res_cached);
+
+	/* We're done */
+	resource->res_stats[ALLOC]++;
+	ioparam->handle = resource->res_guid;
+	ioparam->size = resource->res_size;
+	return 0;
+
+error:
+	pr_err("[%s]: failed to share %u\n", __func__, ioparam->handle);
+	if (shared_resource != NULL)
+		vmcs_sm_release_resource(shared_resource, 0);
+
+	return ret;
+}
+
+/* Free a previously allocated shared memory handle and block.
+*/
+static int vc_sm_ioctl_free(struct SM_PRIV_DATA_T *private,
+			    struct vmcs_sm_ioctl_free *ioparam)
+{
+	struct SM_RESOURCE_T *resource =
+	    vmcs_sm_acquire_resource(private, ioparam->handle);
+
+	if (resource == NULL) {
+		pr_err("[%s]: resource for guid %u does not exist\n", __func__,
+			ioparam->handle);
+		return -EINVAL;
+	}
+
+	/* Check permissions.
+	 */
+	if (resource->pid && (resource->pid != current->tgid)) {
+		pr_err("[%s]: current tgid %u != %u owner\n",
+			__func__, current->tgid, resource->pid);
+		vmcs_sm_release_resource(resource, 0);
+		return -EPERM;
+	}
+
+	vmcs_sm_release_resource(resource, 0);
+	vmcs_sm_release_resource(resource, 0);
+	return 0;
+}
+
+/* Resize a previously allocated shared memory handle and block.
+*/
+static int vc_sm_ioctl_resize(struct SM_PRIV_DATA_T *private,
+			      struct vmcs_sm_ioctl_resize *ioparam)
+{
+	int ret = 0;
+	int status;
+	VC_SM_RESIZE_T resize;
+	struct SM_RESOURCE_T *resource;
+
+	/* Locate resource from GUID.
+	 */
+	resource = vmcs_sm_acquire_resource(private, ioparam->handle);
+	if (!resource) {
+		pr_err("[%s]: failed resource - guid %x\n",
+				__func__, ioparam->handle);
+		ret = -EFAULT;
+		goto error;
+	}
+
+	/* If the resource is locked, its reference count will be not NULL,
+	 ** in which case we will not be allowed to resize it anyways, so
+	 ** reject the attempt here.
+	 */
+	if (resource->lock_count != 0) {
+		pr_err("[%s]: cannot resize - guid %x, ref-cnt %d\n",
+		     __func__, ioparam->handle, resource->lock_count);
+		ret = -EFAULT;
+		goto error;
+	}
+
+	/* Check permissions.
+	 */
+	if (resource->pid && (resource->pid != current->tgid)) {
+		pr_err("[%s]: current tgid %u != %u owner\n", __func__,
+				current->tgid, resource->pid);
+		ret = -EPERM;
+		goto error;
+	}
+
+	if (resource->map_count != 0) {
+		pr_err("[%s]: cannot resize - guid %x, ref-cnt %d\n",
+		     __func__, ioparam->handle, resource->map_count);
+		ret = -EFAULT;
+		goto error;
+	}
+
+	resize.res_handle = resource->res_handle;
+	resize.res_mem = resource->res_base_mem;
+	resize.res_new_size = ioparam->new_size;
+
+	pr_debug("[%s]: attempt to resize data - guid %x, hdl %x, base address %p\n",
+		__func__, ioparam->handle, resize.res_handle, resize.res_mem);
+
+	/* Resize the videocore allocated resource.
+	 */
+	status = vc_vchi_sm_resize(sm_state->sm_handle, &resize,
+				   &private->int_trans_id);
+	if (status == -EINTR) {
+		pr_debug("[%s]: requesting resize memory action restart (trans_id: %u)\n",
+			__func__, private->int_trans_id);
+		ret = -ERESTARTSYS;
+		private->restart_sys = -EINTR;
+		private->int_action = VC_SM_MSG_TYPE_RESIZE;
+		goto error;
+	} else if (status != 0) {
+		pr_err("[%s]: failed to resize memory on videocore (status: %u, trans_id: %u)\n",
+		     __func__, status, private->int_trans_id);
+		ret = -EPERM;
+		goto error;
+	}
+
+	pr_debug("[%s]: success to resize data - hdl %x, size %d -> %d\n",
+		__func__, resize.res_handle, resource->res_size,
+		resize.res_new_size);
+
+	/* Successfully resized, save the information and inform the user.
+	 */
+	ioparam->old_size = resource->res_size;
+	resource->res_size = resize.res_new_size;
+
+error:
+	if (resource)
+		vmcs_sm_release_resource(resource, 0);
+
+	return ret;
+}
+
+/* Lock a previously allocated shared memory handle and block.
+*/
+static int vc_sm_ioctl_lock(struct SM_PRIV_DATA_T *private,
+			    struct vmcs_sm_ioctl_lock_unlock *ioparam,
+			    int change_cache, enum vmcs_sm_cache_e cache_type,
+			    unsigned int vc_addr)
+{
+	int status;
+	VC_SM_LOCK_UNLOCK_T lock;
+	VC_SM_LOCK_RESULT_T result;
+	struct SM_RESOURCE_T *resource;
+	int ret = 0;
+	struct sm_mmap *map, *map_tmp;
+	long unsigned int phys_addr;
+
+	map = NULL;
+
+	/* Locate resource from GUID.
+	 */
+	resource = vmcs_sm_acquire_resource(private, ioparam->handle);
+	if (resource == NULL) {
+		ret = -EINVAL;
+		goto error;
+	}
+
+	/* Check permissions.
+	 */
+	if (resource->pid && (resource->pid != current->tgid)) {
+		pr_err("[%s]: current tgid %u != %u owner\n", __func__,
+				current->tgid, resource->pid);
+		ret = -EPERM;
+		goto error;
+	}
+
+	lock.res_handle = resource->res_handle;
+	lock.res_mem = resource->res_base_mem;
+
+	/* Take the lock and get the address to be mapped.
+	 */
+	if (vc_addr == 0) {
+		pr_debug("[%s]: attempt to lock data - guid %x, hdl %x, base address %p\n",
+			__func__, ioparam->handle, lock.res_handle,
+			lock.res_mem);
+
+		/* Lock the videocore allocated resource.
+		 */
+		status = vc_vchi_sm_lock(sm_state->sm_handle, &lock, &result,
+					 &private->int_trans_id);
+		if (status == -EINTR) {
+			pr_debug("[%s]: requesting lock memory action restart (trans_id: %u)\n",
+				__func__, private->int_trans_id);
+			ret = -ERESTARTSYS;
+			private->restart_sys = -EINTR;
+			private->int_action = VC_SM_MSG_TYPE_LOCK;
+			goto error;
+		} else if (status != 0 ||
+			   (status == 0 && result.res_mem == NULL)) {
+			pr_err("[%s]: failed to lock memory on videocore (status: %u, trans_id: %u)\n",
+			     __func__, status, private->int_trans_id);
+			ret = -EPERM;
+			resource->res_stats[LOCK_FAIL]++;
+			goto error;
+		}
+
+		pr_debug("[%s]: succeed to lock data - hdl %x, base address %p (%p), ref-cnt %d\n",
+			__func__, lock.res_handle, result.res_mem,
+			lock.res_mem, resource->lock_count);
+	}
+	/* Lock assumed taken already, address to be mapped is known.
+	 */
+	else
+		resource->res_base_mem = (void *)vc_addr;
+
+	resource->res_stats[LOCK]++;
+	resource->lock_count++;
+
+	/* Keep track of the new base memory allocation if it has changed.
+	 */
+	if ((vc_addr == 0) &&
+	    (result.res_mem != NULL) &&
+	    (result.res_old_mem != NULL) &&
+	    (result.res_mem != result.res_old_mem)) {
+		resource->res_base_mem = result.res_mem;
+
+		/* Kernel allocated resources.
+		 */
+		if (resource->pid == 0) {
+			if (!list_empty(&resource->map_list)) {
+				list_for_each_entry_safe(map, map_tmp,
+							 &resource->map_list,
+							 resource_map_list) {
+					if (map->res_addr) {
+						iounmap((void *)map->res_addr);
+						map->res_addr = 0;
+
+						vmcs_sm_remove_map(sm_state,
+								map->resource,
+								map);
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	if (change_cache)
+		resource->res_cached = cache_type;
+
+	if (resource->map_count) {
+		ioparam->addr =
+		    vmcs_sm_usr_address_from_pid_and_usr_handle(
+				    current->tgid, ioparam->handle);
+
+		pr_debug("[%s] map_count %d private->pid %d current->tgid %d hnd %x addr %u\n",
+			__func__, resource->map_count, private->pid,
+			current->tgid, ioparam->handle, ioparam->addr);
+	} else {
+		/* Kernel allocated resources.
+		 */
+		if (resource->pid == 0) {
+			pr_debug("[%s]: attempt mapping kernel resource - guid %x, hdl %x\n",
+				__func__, ioparam->handle, lock.res_handle);
+
+			ioparam->addr = 0;
+
+			map = kzalloc(sizeof(*map), GFP_KERNEL);
+			if (map == NULL) {
+				pr_err("[%s]: failed allocating tracker\n",
+						__func__);
+				ret = -ENOMEM;
+				goto error;
+			} else {
+				phys_addr = (uint32_t)resource->res_base_mem &
+				    0x3FFFFFFF;
+				phys_addr += mm_vc_mem_phys_addr;
+				if (resource->res_cached
+						== VMCS_SM_CACHE_HOST) {
+					ioparam->addr = (long unsigned int)
+					/* TODO - make cached work */
+					    ioremap_nocache(phys_addr,
+							   resource->res_size);
+
+					pr_debug("[%s]: mapping kernel - guid %x, hdl %x - cached mapping %u\n",
+						__func__, ioparam->handle,
+						lock.res_handle, ioparam->addr);
+				} else {
+					ioparam->addr = (long unsigned int)
+					    ioremap_nocache(phys_addr,
+							    resource->res_size);
+
+					pr_debug("[%s]: mapping kernel- guid %x, hdl %x - non cached mapping %u\n",
+						__func__, ioparam->handle,
+						lock.res_handle, ioparam->addr);
+				}
+
+				map->res_pid = 0;
+				map->res_vc_hdl = resource->res_handle;
+				map->res_usr_hdl = resource->res_guid;
+				map->res_addr = ioparam->addr;
+				map->resource = resource;
+				map->vma = NULL;
+
+				vmcs_sm_add_map(sm_state, resource, map);
+			}
+		} else
+			ioparam->addr = 0;
+	}
+
+error:
+	if (resource)
+		vmcs_sm_release_resource(resource, 0);
+
+	return ret;
+}
+
+/* Unlock a previously allocated shared memory handle and block.
+*/
+static int vc_sm_ioctl_unlock(struct SM_PRIV_DATA_T *private,
+			      struct vmcs_sm_ioctl_lock_unlock *ioparam,
+			      int flush, int wait_reply, int no_vc_unlock)
+{
+	int status;
+	VC_SM_LOCK_UNLOCK_T unlock;
+	struct sm_mmap *map, *map_tmp;
+	struct SM_RESOURCE_T *resource;
+	int ret = 0;
+
+	map = NULL;
+
+	/* Locate resource from GUID.
+	 */
+	resource = vmcs_sm_acquire_resource(private, ioparam->handle);
+	if (resource == NULL) {
+		ret = -EINVAL;
+		goto error;
+	}
+
+	/* Check permissions.
+	 */
+	if (resource->pid && (resource->pid != current->tgid)) {
+		pr_err("[%s]: current tgid %u != %u owner\n",
+			__func__, current->tgid, resource->pid);
+		ret = -EPERM;
+		goto error;
+	}
+
+	unlock.res_handle = resource->res_handle;
+	unlock.res_mem = resource->res_base_mem;
+
+	pr_debug("[%s]: attempt to unlock data - guid %x, hdl %x, base address %p\n",
+		__func__, ioparam->handle, unlock.res_handle, unlock.res_mem);
+
+	/* User space allocated resources.
+	 */
+	if (resource->pid) {
+		/* Flush if requested */
+		if (resource->res_cached && flush) {
+			dma_addr_t phys_addr = 0;
+			resource->res_stats[FLUSH]++;
+
+			phys_addr =
+			    (dma_addr_t)((uint32_t)resource->res_base_mem &
+					 0x3FFFFFFF);
+			phys_addr += (dma_addr_t)mm_vc_mem_phys_addr;
+
+			/* L1 cache flush */
+			down_read(&current->mm->mmap_sem);
+			list_for_each_entry(map, &resource->map_list,
+					    resource_map_list) {
+				if (map->vma) {
+					unsigned long start;
+					unsigned long end;
+					start = map->vma->vm_start;
+					end = map->vma->vm_end;
+
+					vcsm_vma_cache_clean_page_range(
+							start, end);
+				}
+			}
+			up_read(&current->mm->mmap_sem);
+
+			/* L2 cache flush */
+			outer_clean_range(phys_addr,
+					  phys_addr +
+					  (size_t) resource->res_size);
+		}
+
+		/* We need to zap all the vmas associated with this resource */
+		if (resource->lock_count == 1) {
+			down_read(&current->mm->mmap_sem);
+			list_for_each_entry(map, &resource->map_list,
+					    resource_map_list) {
+				if (map->vma) {
+					zap_vma_ptes(map->vma,
+						     map->vma->vm_start,
+						     map->vma->vm_end -
+						     map->vma->vm_start);
+				}
+			}
+			up_read(&current->mm->mmap_sem);
+		}
+	}
+	/* Kernel allocated resources. */
+	else {
+		/* Global + Taken in this context */
+		if (resource->ref_count == 2) {
+			if (!list_empty(&resource->map_list)) {
+				list_for_each_entry_safe(map, map_tmp,
+						&resource->map_list,
+						resource_map_list) {
+					if (map->res_addr) {
+						if (flush &&
+								(resource->res_cached ==
+									VMCS_SM_CACHE_HOST)) {
+							long unsigned int
+								phys_addr;
+							phys_addr = (uint32_t)
+								resource->res_base_mem & 0x3FFFFFFF;
+							phys_addr +=
+								mm_vc_mem_phys_addr;
+
+							/* L1 cache flush */
+							dmac_flush_range((const
+										void
+										*)
+									map->res_addr, (const void *)
+									(map->res_addr + resource->res_size));
+
+							/* L2 cache flush */
+							outer_clean_range
+								(phys_addr,
+								 phys_addr +
+								 (size_t)
+								 resource->res_size);
+						}
+
+						iounmap((void *)map->res_addr);
+						map->res_addr = 0;
+
+						vmcs_sm_remove_map(sm_state,
+								map->resource,
+								map);
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	if (resource->lock_count) {
+		/* Bypass the videocore unlock.
+		 */
+		if (no_vc_unlock)
+			status = 0;
+		/* Unlock the videocore allocated resource.
+		 */
+		else {
+			status =
+			    vc_vchi_sm_unlock(sm_state->sm_handle, &unlock,
+					      &private->int_trans_id,
+					      wait_reply);
+			if (status == -EINTR) {
+				pr_debug("[%s]: requesting unlock memory action restart (trans_id: %u)\n",
+					__func__, private->int_trans_id);
+
+				ret = -ERESTARTSYS;
+				resource->res_stats[UNLOCK]--;
+				private->restart_sys = -EINTR;
+				private->int_action = VC_SM_MSG_TYPE_UNLOCK;
+				goto error;
+			} else if (status != 0) {
+				pr_err("[%s]: failed to unlock vc mem (status: %u, trans_id: %u)\n",
+				     __func__, status, private->int_trans_id);
+
+				ret = -EPERM;
+				resource->res_stats[UNLOCK_FAIL]++;
+				goto error;
+			}
+		}
+
+		resource->res_stats[UNLOCK]++;
+		resource->lock_count--;
+	}
+
+	pr_debug("[%s]: success to unlock data - hdl %x, base address %p, ref-cnt %d\n",
+		__func__, unlock.res_handle, unlock.res_mem,
+		resource->lock_count);
+
+error:
+	if (resource)
+		vmcs_sm_release_resource(resource, 0);
+
+	return ret;
+}
+
+/* Handle control from host. */
+static long vc_sm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	int ret = 0;
+	unsigned int cmdnr = _IOC_NR(cmd);
+	struct SM_PRIV_DATA_T *file_data =
+	    (struct SM_PRIV_DATA_T *)file->private_data;
+	struct SM_RESOURCE_T *resource = NULL;
+
+	/* Validate we can work with this device. */
+	if ((sm_state == NULL) || (file_data == NULL)) {
+		pr_err("[%s]: invalid device\n", __func__);
+		ret = -EPERM;
+		goto out;
+	}
+
+	pr_debug("[%s]: cmd %x tgid %u, owner %u\n", __func__, cmdnr,
+			current->tgid, file_data->pid);
+
+	/* Action is a re-post of a previously interrupted action? */
+	if (file_data->restart_sys == -EINTR) {
+		VC_SM_ACTION_CLEAN_T action_clean;
+
+		pr_debug("[%s]: clean up of action %u (trans_id: %u) following EINTR\n",
+			__func__, file_data->int_action,
+			file_data->int_trans_id);
+
+		action_clean.res_action = file_data->int_action;
+		action_clean.action_trans_id = file_data->int_trans_id;
+
+		vc_vchi_sm_clean_up(sm_state->sm_handle, &action_clean);
+
+		file_data->restart_sys = 0;
+	}
+
+	/* Now process the command.
+	 */
+	switch (cmdnr) {
+		/* New memory allocation.
+		 */
+	case VMCS_SM_CMD_ALLOC:
+		{
+			struct vmcs_sm_ioctl_alloc ioparam;
+
+			/* Get the parameter data.
+			 */
+			if (copy_from_user
+			    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			ret = vc_sm_ioctl_alloc(file_data, &ioparam);
+			if (!ret &&
+			    (copy_to_user((void *)arg,
+					  &ioparam, sizeof(ioparam)) != 0)) {
+				struct vmcs_sm_ioctl_free freeparam = {
+					ioparam.handle
+				};
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+						__func__, cmdnr);
+				vc_sm_ioctl_free(file_data, &freeparam);
+				ret = -EFAULT;
+			}
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+		/* Share existing memory allocation.
+		 */
+	case VMCS_SM_CMD_ALLOC_SHARE:
+		{
+			struct vmcs_sm_ioctl_alloc_share ioparam;
+
+			/* Get the parameter data.
+			 */
+			if (copy_from_user
+			    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			ret = vc_sm_ioctl_alloc_share(file_data, &ioparam);
+
+			/* Copy result back to user.
+			 */
+			if (!ret
+			    && copy_to_user((void *)arg, &ioparam,
+					    sizeof(ioparam)) != 0) {
+				struct vmcs_sm_ioctl_free freeparam = {
+					ioparam.handle
+				};
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+						__func__, cmdnr);
+				vc_sm_ioctl_free(file_data, &freeparam);
+				ret = -EFAULT;
+			}
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+		/* Lock (attempt to) *and* register a cache behavior change.
+		 */
+	case VMCS_SM_CMD_LOCK_CACHE:
+		{
+			struct vmcs_sm_ioctl_lock_cache ioparam;
+			struct vmcs_sm_ioctl_lock_unlock lock;
+
+			/* Get parameter data.
+			 */
+			if (copy_from_user
+			    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			lock.handle = ioparam.handle;
+			ret =
+			    vc_sm_ioctl_lock(file_data, &lock, 1,
+					     ioparam.cached, 0);
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+		/* Lock (attempt to) existing memory allocation.
+		 */
+	case VMCS_SM_CMD_LOCK:
+		{
+			struct vmcs_sm_ioctl_lock_unlock ioparam;
+
+			/* Get parameter data.
+			 */
+			if (copy_from_user
+			    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			ret = vc_sm_ioctl_lock(file_data, &ioparam, 0, 0, 0);
+
+			/* Copy result back to user.
+			 */
+			if (copy_to_user((void *)arg, &ioparam, sizeof(ioparam))
+			    != 0) {
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+				     __func__, cmdnr);
+				ret = -EFAULT;
+			}
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+		/* Unlock (attempt to) existing memory allocation.
+		 */
+	case VMCS_SM_CMD_UNLOCK:
+		{
+			struct vmcs_sm_ioctl_lock_unlock ioparam;
+
+			/* Get parameter data.
+			 */
+			if (copy_from_user
+			    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			ret = vc_sm_ioctl_unlock(file_data, &ioparam, 0, 1, 0);
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+		/* Resize (attempt to) existing memory allocation.
+		 */
+	case VMCS_SM_CMD_RESIZE:
+		{
+			struct vmcs_sm_ioctl_resize ioparam;
+
+			/* Get parameter data.
+			 */
+			if (copy_from_user
+			    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			ret = vc_sm_ioctl_resize(file_data, &ioparam);
+
+			/* Copy result back to user.
+			 */
+			if (copy_to_user((void *)arg, &ioparam, sizeof(ioparam))
+			    != 0) {
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+				     __func__, cmdnr);
+				ret = -EFAULT;
+			}
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+		/* Terminate existing memory allocation.
+		 */
+	case VMCS_SM_CMD_FREE:
+		{
+			struct vmcs_sm_ioctl_free ioparam;
+
+			/* Get parameter data.
+			 */
+			if (copy_from_user
+			    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			ret = vc_sm_ioctl_free(file_data, &ioparam);
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+		/* Walk allocation on videocore, information shows up in the
+		 ** videocore log.
+		 */
+	case VMCS_SM_CMD_VC_WALK_ALLOC:
+		{
+			pr_debug("[%s]: invoking walk alloc\n", __func__);
+
+			if (vc_vchi_sm_walk_alloc(sm_state->sm_handle) != 0)
+				pr_err("[%s]: failed to walk-alloc on videocore\n",
+				     __func__);
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+/* Walk mapping table on host, information shows up in the
+		 ** kernel log.
+		 */
+	case VMCS_SM_CMD_HOST_WALK_MAP:
+		{
+			/* Use pid of -1 to tell to walk the whole map. */
+			vmcs_sm_host_walk_map_per_pid(-1);
+
+			/* Done. */
+			goto out;
+		}
+		break;
+
+		/* Walk mapping table per process on host.  */
+	case VMCS_SM_CMD_HOST_WALK_PID_ALLOC:
+		{
+			struct vmcs_sm_ioctl_walk ioparam;
+
+			/* Get parameter data.  */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			vmcs_sm_host_walk_alloc(file_data);
+
+			/* Done. */
+			goto out;
+		}
+		break;
+
+		/* Walk allocation per process on host.  */
+	case VMCS_SM_CMD_HOST_WALK_PID_MAP:
+		{
+			struct vmcs_sm_ioctl_walk ioparam;
+
+			/* Get parameter data.  */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			vmcs_sm_host_walk_map_per_pid(ioparam.pid);
+
+			/* Done. */
+			goto out;
+		}
+		break;
+
+		/* Gets the size of the memory associated with a user handle. */
+	case VMCS_SM_CMD_SIZE_USR_HANDLE:
+		{
+			struct vmcs_sm_ioctl_size ioparam;
+
+			/* Get parameter data. */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			/* Locate resource from GUID. */
+			resource =
+			    vmcs_sm_acquire_resource(file_data, ioparam.handle);
+			if (resource != NULL) {
+				ioparam.size = resource->res_size;
+				vmcs_sm_release_resource(resource, 0);
+			} else {
+				ioparam.size = 0;
+			}
+
+			if (copy_to_user((void *)arg,
+					 &ioparam, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+				     __func__, cmdnr);
+				ret = -EFAULT;
+			}
+
+			/* Done. */
+			goto out;
+		}
+		break;
+
+		/* Verify we are dealing with a valid resource. */
+	case VMCS_SM_CMD_CHK_USR_HANDLE:
+		{
+			struct vmcs_sm_ioctl_chk ioparam;
+
+			/* Get parameter data.
+			 */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+
+				ret = -EFAULT;
+				goto out;
+			}
+
+			/* Locate resource from GUID. */
+			resource =
+			    vmcs_sm_acquire_resource(file_data, ioparam.handle);
+			if (resource == NULL)
+				ret = -EINVAL;
+			/* If the resource is cacheable, return additional
+			 * information that may be needed to flush the cache.
+			 */
+			else if ((resource->res_cached == VMCS_SM_CACHE_HOST) ||
+				 (resource->res_cached == VMCS_SM_CACHE_BOTH)) {
+				ioparam.addr =
+				    vmcs_sm_usr_address_from_pid_and_usr_handle
+				    (current->tgid, ioparam.handle);
+				ioparam.size = resource->res_size;
+				ioparam.cache = resource->res_cached;
+			} else {
+				ioparam.addr = 0;
+				ioparam.size = 0;
+				ioparam.cache = resource->res_cached;
+			}
+
+			if (resource)
+				vmcs_sm_release_resource(resource, 0);
+
+			if (copy_to_user((void *)arg,
+					 &ioparam, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+			}
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+		/*
+		 * Maps a user handle given the process and the virtual address.
+		 */
+	case VMCS_SM_CMD_MAPPED_USR_HANDLE:
+		{
+			struct vmcs_sm_ioctl_map ioparam;
+
+			/* Get parameter data. */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+
+				ret = -EFAULT;
+				goto out;
+			}
+
+			ioparam.handle =
+			    vmcs_sm_usr_handle_from_pid_and_address(
+					    ioparam.pid, ioparam.addr);
+
+			resource =
+			    vmcs_sm_acquire_resource(file_data, ioparam.handle);
+			if ((resource != NULL)
+			    && ((resource->res_cached == VMCS_SM_CACHE_HOST)
+				|| (resource->res_cached ==
+				    VMCS_SM_CACHE_BOTH))) {
+				ioparam.size = resource->res_size;
+			} else {
+				ioparam.size = 0;
+			}
+
+			if (resource)
+				vmcs_sm_release_resource(resource, 0);
+
+			if (copy_to_user((void *)arg,
+					 &ioparam, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+				     __func__, cmdnr);
+				ret = -EFAULT;
+			}
+
+			/* Done. */
+			goto out;
+		}
+		break;
+
+		/*
+		 * Maps a videocore handle given process and virtual address.
+		 */
+	case VMCS_SM_CMD_MAPPED_VC_HDL_FROM_ADDR:
+		{
+			struct vmcs_sm_ioctl_map ioparam;
+
+			/* Get parameter data. */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			ioparam.handle = vmcs_sm_vc_handle_from_pid_and_address(
+					    ioparam.pid, ioparam.addr);
+
+			if (copy_to_user((void *)arg,
+					 &ioparam, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+				     __func__, cmdnr);
+
+				ret = -EFAULT;
+			}
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+		/* Maps a videocore handle given process and user handle. */
+	case VMCS_SM_CMD_MAPPED_VC_HDL_FROM_HDL:
+		{
+			struct vmcs_sm_ioctl_map ioparam;
+
+			/* Get parameter data. */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			/* Locate resource from GUID. */
+			resource =
+			    vmcs_sm_acquire_resource(file_data, ioparam.handle);
+			if (resource != NULL) {
+				ioparam.handle = resource->res_handle;
+				vmcs_sm_release_resource(resource, 0);
+			} else {
+				ioparam.handle = 0;
+			}
+
+			if (copy_to_user((void *)arg,
+					 &ioparam, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+				     __func__, cmdnr);
+
+				ret = -EFAULT;
+			}
+
+			/* Done. */
+			goto out;
+		}
+		break;
+
+		/*
+		 * Maps a videocore address given process and videocore handle.
+		 */
+	case VMCS_SM_CMD_MAPPED_VC_ADDR_FROM_HDL:
+		{
+			struct vmcs_sm_ioctl_map ioparam;
+
+			/* Get parameter data. */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+
+				ret = -EFAULT;
+				goto out;
+			}
+
+			/* Locate resource from GUID. */
+			resource =
+			    vmcs_sm_acquire_resource(file_data, ioparam.handle);
+			if (resource != NULL) {
+				ioparam.addr =
+					(unsigned int)resource->res_base_mem;
+				vmcs_sm_release_resource(resource, 0);
+			} else {
+				ioparam.addr = 0;
+			}
+
+			if (copy_to_user((void *)arg,
+					 &ioparam, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+				     __func__, cmdnr);
+				ret = -EFAULT;
+			}
+
+			/* Done. */
+			goto out;
+		}
+		break;
+
+		/* Maps a user address given process and vc handle.
+		 */
+	case VMCS_SM_CMD_MAPPED_USR_ADDRESS:
+		{
+			struct vmcs_sm_ioctl_map ioparam;
+
+			/* Get parameter data. */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			/*
+			 * Return the address information from the mapping,
+			 * 0 (ie NULL) if it cannot locate the actual mapping.
+			 */
+			ioparam.addr =
+			    vmcs_sm_usr_address_from_pid_and_usr_handle
+			    (ioparam.pid, ioparam.handle);
+
+			if (copy_to_user((void *)arg,
+					 &ioparam, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-to-user for cmd %x\n",
+				     __func__, cmdnr);
+				ret = -EFAULT;
+			}
+
+			/* Done. */
+			goto out;
+		}
+		break;
+
+		/* Flush the cache for a given mapping. */
+	case VMCS_SM_CMD_FLUSH:
+		{
+			struct vmcs_sm_ioctl_cache ioparam;
+
+			/* Get parameter data. */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			/* Locate resource from GUID. */
+			resource =
+			    vmcs_sm_acquire_resource(file_data, ioparam.handle);
+
+			if ((resource != NULL) && resource->res_cached) {
+				dma_addr_t phys_addr = 0;
+
+				resource->res_stats[FLUSH]++;
+
+				phys_addr =
+				    (dma_addr_t)((uint32_t)
+						 resource->res_base_mem &
+						 0x3FFFFFFF);
+				phys_addr += (dma_addr_t)mm_vc_mem_phys_addr;
+
+				/* L1 cache flush */
+				down_read(&current->mm->mmap_sem);
+				vcsm_vma_cache_clean_page_range((unsigned long)
+								ioparam.addr,
+								(unsigned long)
+								ioparam.addr +
+								ioparam.size);
+				up_read(&current->mm->mmap_sem);
+
+				/* L2 cache flush */
+				outer_clean_range(phys_addr,
+						  phys_addr +
+						  (size_t) ioparam.size);
+			} else if (resource == NULL) {
+				ret = -EINVAL;
+				goto out;
+			}
+
+			if (resource)
+				vmcs_sm_release_resource(resource, 0);
+
+			/* Done. */
+			goto out;
+		}
+		break;
+
+		/* Invalidate the cache for a given mapping. */
+	case VMCS_SM_CMD_INVALID:
+		{
+			struct vmcs_sm_ioctl_cache ioparam;
+
+			/* Get parameter data. */
+			if (copy_from_user(&ioparam,
+					   (void *)arg, sizeof(ioparam)) != 0) {
+				pr_err("[%s]: failed to copy-from-user for cmd %x\n",
+						__func__, cmdnr);
+				ret = -EFAULT;
+				goto out;
+			}
+
+			/* Locate resource from GUID.
+			 */
+			resource =
+			    vmcs_sm_acquire_resource(file_data, ioparam.handle);
+
+			if ((resource != NULL) && resource->res_cached) {
+				dma_addr_t phys_addr = 0;
+
+				resource->res_stats[INVALID]++;
+
+				phys_addr =
+				    (dma_addr_t)((uint32_t)
+						 resource->res_base_mem &
+						 0x3FFFFFFF);
+				phys_addr += (dma_addr_t)mm_vc_mem_phys_addr;
+
+				/* L2 cache invalidate */
+				outer_inv_range(phys_addr,
+						phys_addr +
+						(size_t) ioparam.size);
+
+				/* L1 cache invalidate */
+				down_read(&current->mm->mmap_sem);
+				vcsm_vma_cache_clean_page_range((unsigned long)
+								ioparam.addr,
+								(unsigned long)
+								ioparam.addr +
+								ioparam.size);
+				up_read(&current->mm->mmap_sem);
+			} else if (resource == NULL) {
+				ret = -EINVAL;
+				goto out;
+			}
+
+			if (resource)
+				vmcs_sm_release_resource(resource, 0);
+
+			/* Done.
+			 */
+			goto out;
+		}
+		break;
+
+	default:
+		{
+			ret = -EINVAL;
+			goto out;
+		}
+		break;
+	}
+
+out:
+	return ret;
+}
+
+/* Device operations that we managed in this driver.
+*/
+static const struct file_operations vmcs_sm_ops = {
+	.owner = THIS_MODULE,
+	.unlocked_ioctl = vc_sm_ioctl,
+	.open = vc_sm_open,
+	.release = vc_sm_release,
+	.mmap = vc_sm_mmap,
+};
+
+/* Creation of device.
+*/
+static int vc_sm_create_sharedmemory(void)
+{
+	int ret;
+
+	if (sm_state == NULL) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	/* Create a device class for creating dev nodes.
+	 */
+	sm_state->sm_class = class_create(THIS_MODULE, "vc-sm");
+	if (IS_ERR(sm_state->sm_class)) {
+		pr_err("[%s]: unable to create device class\n", __func__);
+		ret = PTR_ERR(sm_state->sm_class);
+		goto out;
+	}
+
+	/* Create a character driver.
+	 */
+	ret = alloc_chrdev_region(&sm_state->sm_devid,
+				  DEVICE_MINOR, 1, DEVICE_NAME);
+	if (ret != 0) {
+		pr_err("[%s]: unable to allocate device number\n", __func__);
+		goto out_dev_class_destroy;
+	}
+
+	cdev_init(&sm_state->sm_cdev, &vmcs_sm_ops);
+	ret = cdev_add(&sm_state->sm_cdev, sm_state->sm_devid, 1);
+	if (ret != 0) {
+		pr_err("[%s]: unable to register device\n", __func__);
+		goto out_chrdev_unreg;
+	}
+
+	/* Create a device node.
+	 */
+	sm_state->sm_dev = device_create(sm_state->sm_class,
+					 NULL,
+					 MKDEV(MAJOR(sm_state->sm_devid),
+					       DEVICE_MINOR), NULL,
+					 DEVICE_NAME);
+	if (IS_ERR(sm_state->sm_dev)) {
+		pr_err("[%s]: unable to create device node\n", __func__);
+		ret = PTR_ERR(sm_state->sm_dev);
+		goto out_chrdev_del;
+	}
+
+	goto out;
+
+out_chrdev_del:
+	cdev_del(&sm_state->sm_cdev);
+out_chrdev_unreg:
+	unregister_chrdev_region(sm_state->sm_devid, 1);
+out_dev_class_destroy:
+	class_destroy(sm_state->sm_class);
+	sm_state->sm_class = NULL;
+out:
+	return ret;
+}
+
+/* Termination of the device.
+*/
+static int vc_sm_remove_sharedmemory(void)
+{
+	int ret;
+
+	if (sm_state == NULL) {
+		/* Nothing to do.
+		 */
+		ret = 0;
+		goto out;
+	}
+
+	/* Remove the sharedmemory character driver.
+	 */
+	cdev_del(&sm_state->sm_cdev);
+
+	/* Unregister region.
+	 */
+	unregister_chrdev_region(sm_state->sm_devid, 1);
+
+	ret = 0;
+	goto out;
+
+out:
+	return ret;
+}
+
+/* Videocore connected.  */
+static void vc_sm_connected_init(void)
+{
+	int ret;
+	VCHI_INSTANCE_T vchi_instance;
+	VCHI_CONNECTION_T *vchi_connection = NULL;
+
+	pr_info("[%s]: start\n", __func__);
+
+	/* Allocate memory for the state structure.
+	 */
+	sm_state = kzalloc(sizeof(struct SM_STATE_T), GFP_KERNEL);
+	if (sm_state == NULL) {
+		pr_err("[%s]: failed to allocate memory\n", __func__);
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	mutex_init(&sm_state->lock);
+	mutex_init(&sm_state->map_lock);
+
+	/* Initialize and create a VCHI connection for the shared memory service
+	 ** running on videocore.
+	 */
+	ret = vchi_initialise(&vchi_instance);
+	if (ret != 0) {
+		pr_err("[%s]: failed to initialise VCHI instance (ret=%d)\n",
+			__func__, ret);
+
+		ret = -EIO;
+		goto err_free_mem;
+	}
+
+	ret = vchi_connect(NULL, 0, vchi_instance);
+	if (ret != 0) {
+		pr_err("[%s]: failed to connect VCHI instance (ret=%d)\n",
+			__func__, ret);
+
+		ret = -EIO;
+		goto err_free_mem;
+	}
+
+	/* Initialize an instance of the shared memory service. */
+	sm_state->sm_handle =
+	    vc_vchi_sm_init(vchi_instance, &vchi_connection, 1);
+	if (sm_state->sm_handle == NULL) {
+		pr_err("[%s]: failed to initialize shared memory service\n",
+			__func__);
+
+		ret = -EPERM;
+		goto err_free_mem;
+	}
+
+	/* Create a debug fs directory entry (root). */
+	sm_state->dir_root = debugfs_create_dir(VC_SM_DIR_ROOT_NAME, NULL);
+	if (!sm_state->dir_root) {
+		pr_err("[%s]: failed to create \'%s\' directory entry\n",
+			__func__, VC_SM_DIR_ROOT_NAME);
+
+		ret = -EPERM;
+		goto err_stop_sm_service;
+	}
+
+	sm_state->dir_state.show = &vc_sm_global_state_show;
+	sm_state->dir_state.dir_entry = debugfs_create_file(VC_SM_STATE,
+			S_IRUGO, sm_state->dir_root, &sm_state->dir_state,
+			&vc_sm_debug_fs_fops);
+
+	sm_state->dir_stats.show = &vc_sm_global_statistics_show;
+	sm_state->dir_stats.dir_entry = debugfs_create_file(VC_SM_STATS,
+			S_IRUGO, sm_state->dir_root, &sm_state->dir_stats,
+			&vc_sm_debug_fs_fops);
+
+	/* Create the proc entry children. */
+	sm_state->dir_alloc = debugfs_create_dir(VC_SM_DIR_ALLOC_NAME,
+			sm_state->dir_root);
+
+	/* Create a shared memory device. */
+	ret = vc_sm_create_sharedmemory();
+	if (ret != 0) {
+		pr_err("[%s]: failed to create shared memory device\n",
+			__func__);
+		goto err_remove_debugfs;
+	}
+
+	INIT_LIST_HEAD(&sm_state->map_list);
+	INIT_LIST_HEAD(&sm_state->resource_list);
+
+	sm_state->data_knl = vc_sm_create_priv_data(0);
+	if (sm_state->data_knl == NULL) {
+		pr_err("[%s]: failed to create kernel private data tracker\n",
+			__func__);
+		goto err_remove_shared_memory;
+	}
+
+	/* Done!
+	 */
+	sm_inited = 1;
+	goto out;
+
+err_remove_shared_memory:
+	vc_sm_remove_sharedmemory();
+err_remove_debugfs:
+	debugfs_remove_recursive(sm_state->dir_root);
+err_stop_sm_service:
+	vc_vchi_sm_stop(&sm_state->sm_handle);
+err_free_mem:
+	kfree(sm_state);
+out:
+	pr_info("[%s]: end - returning %d\n", __func__, ret);
+}
+
+/* Driver loading. */
+static int __init vc_sm_init(void)
+{
+	pr_info("vc-sm: Videocore shared memory driver\n");
+	vchiq_add_connected_callback(vc_sm_connected_init);
+	return 0;
+}
+
+/* Driver unloading. */
+static void __exit vc_sm_exit(void)
+{
+	pr_debug("[%s]: start\n", __func__);
+	if (sm_inited) {
+		/* Remove shared memory device.
+		 */
+		vc_sm_remove_sharedmemory();
+
+		/* Remove all proc entries.
+		 */
+		debugfs_remove_recursive(sm_state->dir_root);
+
+		/* Stop the videocore shared memory service.
+		 */
+		vc_vchi_sm_stop(&sm_state->sm_handle);
+
+		/* Free the memory for the state structure.
+		 */
+		mutex_destroy(&(sm_state->map_lock));
+		kfree(sm_state);
+	}
+
+	pr_debug("[%s]: end\n", __func__);
+}
+
+#if defined(__KERNEL__)
+/* Allocate a shared memory handle and block. */
+int vc_sm_alloc(VC_SM_ALLOC_T *alloc, int *handle)
+{
+	struct vmcs_sm_ioctl_alloc ioparam = { 0 };
+	int ret;
+	struct SM_RESOURCE_T *resource;
+
+	/* Validate we can work with this device.
+	 */
+	if (sm_state == NULL || alloc == NULL || handle == NULL) {
+		pr_err("[%s]: invalid input\n", __func__);
+		return -EPERM;
+	}
+
+	ioparam.size = alloc->base_unit;
+	ioparam.num = alloc->num_unit;
+	ioparam.cached =
+	    alloc->type == VC_SM_ALLOC_CACHED ? VMCS_SM_CACHE_VC : 0;
+
+	ret = vc_sm_ioctl_alloc(sm_state->data_knl, &ioparam);
+
+	if (ret == 0) {
+		resource =
+		    vmcs_sm_acquire_resource(sm_state->data_knl,
+					     ioparam.handle);
+		if (resource) {
+			resource->pid = 0;
+			vmcs_sm_release_resource(resource, 0);
+
+			/* Assign valid handle at this time.
+			 */
+			*handle = ioparam.handle;
+		} else {
+			ret = -ENOMEM;
+		}
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(vc_sm_alloc);
+
+/* Get an internal resource handle mapped from the external one.
+*/
+int vc_sm_int_handle(int handle)
+{
+	struct SM_RESOURCE_T *resource;
+	int ret = 0;
+
+	/* Validate we can work with this device.
+	 */
+	if (sm_state == NULL || handle == 0) {
+		pr_err("[%s]: invalid input\n", __func__);
+		return 0;
+	}
+
+	/* Locate resource from GUID.
+	 */
+	resource = vmcs_sm_acquire_resource(sm_state->data_knl, handle);
+	if (resource) {
+		ret = resource->res_handle;
+		vmcs_sm_release_resource(resource, 0);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(vc_sm_int_handle);
+
+/* Free a previously allocated shared memory handle and block.
+*/
+int vc_sm_free(int handle)
+{
+	struct vmcs_sm_ioctl_free ioparam = { handle };
+
+	/* Validate we can work with this device.
+	 */
+	if (sm_state == NULL || handle == 0) {
+		pr_err("[%s]: invalid input\n", __func__);
+		return -EPERM;
+	}
+
+	return vc_sm_ioctl_free(sm_state->data_knl, &ioparam);
+}
+EXPORT_SYMBOL_GPL(vc_sm_free);
+
+/* Lock a memory handle for use by kernel.
+*/
+int vc_sm_lock(int handle, VC_SM_LOCK_CACHE_MODE_T mode,
+	       long unsigned int *data)
+{
+	struct vmcs_sm_ioctl_lock_unlock ioparam;
+	int ret;
+
+	/* Validate we can work with this device.
+	 */
+	if (sm_state == NULL || handle == 0 || data == NULL) {
+		pr_err("[%s]: invalid input\n", __func__);
+		return -EPERM;
+	}
+
+	*data = 0;
+
+	ioparam.handle = handle;
+	ret = vc_sm_ioctl_lock(sm_state->data_knl,
+			       &ioparam,
+			       1,
+			       ((mode ==
+				 VC_SM_LOCK_CACHED) ? VMCS_SM_CACHE_HOST :
+				VMCS_SM_CACHE_NONE), 0);
+
+	*data = ioparam.addr;
+	return ret;
+}
+EXPORT_SYMBOL_GPL(vc_sm_lock);
+
+/* Unlock a memory handle in use by kernel.
+*/
+int vc_sm_unlock(int handle, int flush, int no_vc_unlock)
+{
+	struct vmcs_sm_ioctl_lock_unlock ioparam;
+
+	/* Validate we can work with this device.
+	 */
+	if (sm_state == NULL || handle == 0) {
+		pr_err("[%s]: invalid input\n", __func__);
+		return -EPERM;
+	}
+
+	ioparam.handle = handle;
+	return vc_sm_ioctl_unlock(sm_state->data_knl,
+				  &ioparam, flush, 0, no_vc_unlock);
+}
+EXPORT_SYMBOL_GPL(vc_sm_unlock);
+
+/* Map a shared memory region for use by kernel.
+*/
+int vc_sm_map(int handle, unsigned int sm_addr, VC_SM_LOCK_CACHE_MODE_T mode,
+	      long unsigned int *data)
+{
+	struct vmcs_sm_ioctl_lock_unlock ioparam;
+	int ret;
+
+	/* Validate we can work with this device.
+	 */
+	if (sm_state == NULL || handle == 0 || data == NULL || sm_addr == 0) {
+		pr_err("[%s]: invalid input\n", __func__);
+		return -EPERM;
+	}
+
+	*data = 0;
+
+	ioparam.handle = handle;
+	ret = vc_sm_ioctl_lock(sm_state->data_knl,
+			       &ioparam,
+			       1,
+			       ((mode ==
+				 VC_SM_LOCK_CACHED) ? VMCS_SM_CACHE_HOST :
+				VMCS_SM_CACHE_NONE), sm_addr);
+
+	*data = ioparam.addr;
+	return ret;
+}
+EXPORT_SYMBOL_GPL(vc_sm_map);
+#endif
+
+late_initcall(vc_sm_init);
+module_exit(vc_sm_exit);
+
+MODULE_AUTHOR("Broadcom");
+MODULE_DESCRIPTION("VideoCore SharedMemory Driver");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/drivers/char/hw_random/bcm2708-rng.c linux-rpi/drivers/char/hw_random/bcm2708-rng.c
--- linux-3.18.10/drivers/char/hw_random/bcm2708-rng.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/char/hw_random/bcm2708-rng.c	2015-03-26 11:46:46.140230636 +0100
@@ -0,0 +1,118 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/hw_random.h>
+#include <linux/printk.h>
+
+#include <asm/io.h>
+#include <mach/hardware.h>
+#include <mach/platform.h>
+
+#define RNG_CTRL		(0x0)
+#define RNG_STATUS		(0x4)
+#define RNG_DATA		(0x8)
+#define RNG_FF_THRESHOLD	(0xc)
+
+/* enable rng */
+#define RNG_RBGEN               0x1
+/* double speed, less random mode */
+#define RNG_RBG2X               0x2
+
+/* the initial numbers generated are "less random" so will be discarded */
+#define RNG_WARMUP_COUNT      0x40000
+
+static int bcm2708_rng_data_read(struct hwrng *rng, u32 *buffer)
+{
+	void __iomem *rng_base = (void __iomem *)rng->priv;
+	unsigned words;
+	/* wait for a random number to be in fifo */
+        do {
+		words = __raw_readl(rng_base + RNG_STATUS)>>24;
+	}
+        while (words == 0);
+	/* read the random number */
+	*buffer = __raw_readl(rng_base + RNG_DATA);
+	return 4;
+}
+
+static struct hwrng bcm2708_rng_ops = {
+	.name		= "bcm2708",
+	.data_read	= bcm2708_rng_data_read,
+};
+
+static int __init bcm2708_rng_init(void)
+{
+	void __iomem *rng_base;
+	int err;
+
+	/* map peripheral */
+	rng_base = ioremap(RNG_BASE, 0x10);
+	pr_info("bcm2708_rng_init=%p\n", rng_base);
+	if (!rng_base) {
+		pr_err("bcm2708_rng_init failed to ioremap\n");
+		return -ENOMEM;
+	}
+	bcm2708_rng_ops.priv = (unsigned long)rng_base;
+
+	/* set warm-up count & enable */
+	__raw_writel(RNG_WARMUP_COUNT, rng_base + RNG_STATUS);
+	__raw_writel(RNG_RBGEN, rng_base + RNG_CTRL);
+
+	/* register driver */
+	err = hwrng_register(&bcm2708_rng_ops);
+	if (err) {
+		pr_err("bcm2708_rng_init hwrng_register()=%d\n", err);
+		iounmap(rng_base);
+	}
+	return err;
+}
+
+static void __exit bcm2708_rng_exit(void)
+{
+	void __iomem *rng_base = (void __iomem *)bcm2708_rng_ops.priv;
+	pr_info("bcm2708_rng_exit\n");
+	/* disable rng hardware */
+	__raw_writel(0, rng_base + RNG_CTRL);
+	/* unregister driver */
+	hwrng_unregister(&bcm2708_rng_ops);
+	iounmap(rng_base);
+}
+
+module_init(bcm2708_rng_init);
+module_exit(bcm2708_rng_exit);
+
+MODULE_DESCRIPTION("BCM2708 H/W Random Number Generator (RNG) driver");
+MODULE_LICENSE("GPL and additional rights");
diff -Nur linux-3.18.10/drivers/char/hw_random/Kconfig linux-rpi/drivers/char/hw_random/Kconfig
--- linux-3.18.10/drivers/char/hw_random/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/char/hw_random/Kconfig	2015-03-26 11:46:46.136230632 +0100
@@ -320,6 +320,17 @@
 
 	  If unsure, say Y.
 
+config HW_RANDOM_BCM2708
+	tristate "BCM2708 generic true random number generator support"
+	depends on HW_RANDOM && (ARCH_BCM2708 || ARCH_BCM2709)
+	---help---
+	 This driver provides the kernel-side support for the BCM2708 hardware.
+
+	 To compile this driver as a module, choose M here: the
+	 module will be called bcm2708-rng.
+
+	 If unsure, say N.
+
 config HW_RANDOM_MSM
 	tristate "Qualcomm SoCs Random Number Generator support"
 	depends on HW_RANDOM && ARCH_QCOM
diff -Nur linux-3.18.10/drivers/char/hw_random/Makefile linux-rpi/drivers/char/hw_random/Makefile
--- linux-3.18.10/drivers/char/hw_random/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/char/hw_random/Makefile	2015-03-26 11:46:46.140230636 +0100
@@ -28,5 +28,6 @@
 obj-$(CONFIG_HW_RANDOM_EXYNOS)	+= exynos-rng.o
 obj-$(CONFIG_HW_RANDOM_TPM) += tpm-rng.o
 obj-$(CONFIG_HW_RANDOM_BCM2835) += bcm2835-rng.o
+obj-$(CONFIG_HW_RANDOM_BCM2708) += bcm2708-rng.o
 obj-$(CONFIG_HW_RANDOM_MSM) += msm-rng.o
 obj-$(CONFIG_HW_RANDOM_XGENE) += xgene-rng.o
diff -Nur linux-3.18.10/drivers/char/Kconfig linux-rpi/drivers/char/Kconfig
--- linux-3.18.10/drivers/char/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/char/Kconfig	2015-03-26 11:46:46.032230536 +0100
@@ -581,6 +581,8 @@
 
 source "drivers/s390/char/Kconfig"
 
+source "drivers/char/broadcom/Kconfig"
+
 config MSM_SMD_PKT
 	bool "Enable device interface for some SMD packet ports"
 	default n
diff -Nur linux-3.18.10/drivers/char/Makefile linux-rpi/drivers/char/Makefile
--- linux-3.18.10/drivers/char/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/char/Makefile	2015-03-26 11:46:46.032230536 +0100
@@ -62,3 +62,4 @@
 
 obj-$(CONFIG_TILE_SROM)		+= tile-srom.o
 obj-$(CONFIG_XILLYBUS)		+= xillybus/
+obj-$(CONFIG_BRCM_CHAR_DRIVERS) += broadcom/
diff -Nur linux-3.18.10/drivers/clocksource/arm_arch_timer.c linux-rpi/drivers/clocksource/arm_arch_timer.c
--- linux-3.18.10/drivers/clocksource/arm_arch_timer.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/clocksource/arm_arch_timer.c	2015-03-26 11:46:46.384230862 +0100
@@ -795,3 +795,39 @@
 }
 CLOCKSOURCE_OF_DECLARE(armv7_arch_timer_mem, "arm,armv7-timer-mem",
 		       arch_timer_mem_init);
+
+int __init dc4_arch_timer_init(void)
+{
+	if (arch_timers_present & ARCH_CP15_TIMER) {
+		pr_warn("arch_timer: multiple nodes in dt, skipping\n");
+		return -1;
+	}
+
+	arch_timers_present |= ARCH_CP15_TIMER;
+
+	/* Try to determine the frequency from the device tree or CNTFRQ */
+	arch_timer_rate = 19200000;
+
+	arch_timer_ppi[PHYS_SECURE_PPI]    = IRQ_ARM_LOCAL_CNTPSIRQ;
+	arch_timer_ppi[PHYS_NONSECURE_PPI] = IRQ_ARM_LOCAL_CNTPNSIRQ;
+	arch_timer_ppi[VIRT_PPI]           = IRQ_ARM_LOCAL_CNTVIRQ;
+	arch_timer_ppi[HYP_PPI]            = IRQ_ARM_LOCAL_CNTHPIRQ;
+
+	/*
+	 * If HYP mode is available, we know that the physical timer
+	 * has been configured to be accessible from PL1. Use it, so
+	 * that a guest can use the virtual timer instead.
+	 *
+	 * If no interrupt provided for virtual timer, we'll have to
+	 * stick to the physical timer. It'd better be accessible...
+	 */
+	if (is_hyp_mode_available() || !arch_timer_ppi[VIRT_PPI]) {
+		arch_timer_use_virtual = false;
+	}
+
+	arch_timer_c3stop = 0;
+
+	arch_timer_register();
+	arch_timer_common_init();
+	return 0;
+}
diff -Nur linux-3.18.10/drivers/cpufreq/bcm2835-cpufreq.c linux-rpi/drivers/cpufreq/bcm2835-cpufreq.c
--- linux-3.18.10/drivers/cpufreq/bcm2835-cpufreq.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/cpufreq/bcm2835-cpufreq.c	2015-03-26 11:46:46.388230866 +0100
@@ -0,0 +1,224 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/*****************************************************************************
+* FILENAME: bcm2835-cpufreq.h
+* DESCRIPTION: This driver dynamically manages the CPU Frequency of the ARM
+* processor. Messages are sent to Videocore either setting or requesting the
+* frequency of the ARM in order to match an appropiate frequency to the current
+* usage of the processor. The policy which selects the frequency to use is
+* defined in the kernel .config file, but can be changed during runtime.
+*****************************************************************************/
+
+/* ---------- INCLUDES ---------- */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/cpufreq.h>
+#include <mach/vcio.h>
+
+/* ---------- DEFINES ---------- */
+/*#define CPUFREQ_DEBUG_ENABLE*/		/* enable debugging */
+#define MODULE_NAME "bcm2835-cpufreq"
+
+#define VCMSG_ID_ARM_CLOCK 0x000000003		/* Clock/Voltage ID's */
+
+/* debug printk macros */
+#ifdef CPUFREQ_DEBUG_ENABLE
+#define print_debug(fmt,...) pr_debug("%s:%s:%d: "fmt, MODULE_NAME, __func__, __LINE__, ##__VA_ARGS__)
+#else
+#define print_debug(fmt,...)
+#endif
+#define print_err(fmt,...) pr_err("%s:%s:%d: "fmt, MODULE_NAME, __func__,__LINE__, ##__VA_ARGS__)
+#define print_info(fmt,...) pr_info("%s: "fmt, MODULE_NAME, ##__VA_ARGS__)
+
+/* tag part of the message */
+struct vc_msg_tag {
+	uint32_t tag_id;		/* the message id */
+	uint32_t buffer_size;		/* size of the buffer (which in this case is always 8 bytes) */
+	uint32_t data_size;		/* amount of data being sent or received */
+	uint32_t dev_id;		/* the ID of the clock/voltage to get or set */
+	uint32_t val;			/* the value (e.g. rate (in Hz)) to set */
+};
+
+/* message structure to be sent to videocore */
+struct vc_msg {
+	uint32_t msg_size;		/* simply, sizeof(struct vc_msg) */
+	uint32_t request_code;		/* holds various information like the success and number of bytes returned (refer to mailboxes wiki) */
+	struct vc_msg_tag tag;		/* the tag structure above to make */
+	uint32_t end_tag;		/* an end identifier, should be set to NULL */
+};
+
+/* ---------- GLOBALS ---------- */
+static struct cpufreq_driver bcm2835_cpufreq_driver;	/* the cpufreq driver global */
+
+static struct cpufreq_frequency_table bcm2835_freq_table[] = {
+	{0, 0, 0},
+	{0, 0, 0},
+	{0, 0, CPUFREQ_TABLE_END},
+};
+
+/*
+ ===============================================
+  clk_rate either gets or sets the clock rates.
+ ===============================================
+*/
+static uint32_t bcm2835_cpufreq_set_clock(int cur_rate, int arm_rate)
+{
+	int s, actual_rate=0;
+	struct vc_msg msg;
+
+	/* wipe all previous message data */
+	memset(&msg, 0, sizeof msg);
+
+	msg.msg_size = sizeof msg;
+
+	msg.tag.tag_id = VCMSG_SET_CLOCK_RATE;
+	msg.tag.buffer_size = 8;
+	msg.tag.data_size = 8;   /* we're sending the clock ID and the new rates which is a total of 2 words */
+	msg.tag.dev_id = VCMSG_ID_ARM_CLOCK;
+	msg.tag.val = arm_rate * 1000;
+
+	/* send the message */
+	s = bcm_mailbox_property(&msg, sizeof msg);
+
+	/* check if it was all ok and return the rate in KHz */
+	if (s == 0 && (msg.request_code & 0x80000000))
+		actual_rate = msg.tag.val/1000;
+
+	print_debug("Setting new frequency = %d -> %d (actual %d)\n", cur_rate, arm_rate, actual_rate);
+	return actual_rate;
+}
+
+static uint32_t bcm2835_cpufreq_get_clock(int tag)
+{
+	int s;
+	int arm_rate = 0;
+	struct vc_msg msg;
+
+	/* wipe all previous message data */
+	memset(&msg, 0, sizeof msg);
+
+	msg.msg_size = sizeof msg;
+	msg.tag.tag_id = tag;
+	msg.tag.buffer_size = 8;
+	msg.tag.data_size = 4; /* we're just sending the clock ID which is one word long */
+	msg.tag.dev_id = VCMSG_ID_ARM_CLOCK;
+
+	/* send the message */
+	s = bcm_mailbox_property(&msg, sizeof msg);
+
+	/* check if it was all ok and return the rate in KHz */
+	if (s == 0 && (msg.request_code & 0x80000000))
+		arm_rate = msg.tag.val/1000;
+
+	print_debug("%s frequency = %d\n",
+		tag == VCMSG_GET_CLOCK_RATE ? "Current":
+		tag == VCMSG_GET_MIN_CLOCK ? "Min":
+		tag == VCMSG_GET_MAX_CLOCK ? "Max":
+		"Unexpected", arm_rate);
+
+	return arm_rate;
+}
+
+/*
+ ====================================================
+  Module Initialisation registers the cpufreq driver
+ ====================================================
+*/
+static int __init bcm2835_cpufreq_module_init(void)
+{
+	print_debug("IN\n");
+	return cpufreq_register_driver(&bcm2835_cpufreq_driver);
+}
+
+/*
+ =============
+  Module exit
+ =============
+*/
+static void __exit bcm2835_cpufreq_module_exit(void)
+{
+	print_debug("IN\n");
+	cpufreq_unregister_driver(&bcm2835_cpufreq_driver);
+	return;
+}
+
+/*
+ ==============================================================
+  Initialisation function sets up the CPU policy for first use
+ ==============================================================
+*/
+static int bcm2835_cpufreq_driver_init(struct cpufreq_policy *policy)
+{
+	/* measured value of how long it takes to change frequency */
+	const unsigned int transition_latency = 355000; /* ns */
+
+	/* now find out what the maximum and minimum frequencies are */
+	bcm2835_freq_table[0].frequency = bcm2835_cpufreq_get_clock(VCMSG_GET_MIN_CLOCK);
+	bcm2835_freq_table[1].frequency = bcm2835_cpufreq_get_clock(VCMSG_GET_MAX_CLOCK);
+
+	print_info("min=%d max=%d\n", bcm2835_freq_table[0].frequency, bcm2835_freq_table[1].frequency);
+	return cpufreq_generic_init(policy, bcm2835_freq_table, transition_latency);
+}
+
+/*
+ =====================================================================
+  Target index function chooses the requested frequency from the table
+ =====================================================================
+*/
+
+static int bcm2835_cpufreq_driver_target_index(struct cpufreq_policy *policy, unsigned int state)
+{
+	unsigned int target_freq = bcm2835_freq_table[state].frequency;
+	unsigned int cur = bcm2835_cpufreq_set_clock(policy->cur, target_freq);
+
+	if (!cur)
+	{
+		print_err("Error occurred setting a new frequency (%d)\n", target_freq);
+		return -EINVAL;
+	}
+	print_debug("%s: %i: freq %d->%d\n", policy->governor->name, state, policy->cur, cur);
+	return 0;
+}
+
+/*
+ ======================================================
+  Get function returns the current frequency from table
+ ======================================================
+*/
+
+static unsigned int bcm2835_cpufreq_driver_get(unsigned int cpu)
+{
+	unsigned int actual_rate = bcm2835_cpufreq_get_clock(VCMSG_GET_CLOCK_RATE);
+	print_debug("%d: freq=%d\n", cpu, actual_rate);
+	return actual_rate <= bcm2835_freq_table[0].frequency ? bcm2835_freq_table[0].frequency : bcm2835_freq_table[1].frequency;
+}
+
+/* the CPUFreq driver */
+static struct cpufreq_driver bcm2835_cpufreq_driver = {
+	.name         = "BCM2835 CPUFreq",
+	.init         = bcm2835_cpufreq_driver_init,
+	.verify       = cpufreq_generic_frequency_table_verify,
+	.target_index = bcm2835_cpufreq_driver_target_index,
+	.get          = bcm2835_cpufreq_driver_get,
+	.attr         = cpufreq_generic_attr,
+};
+
+MODULE_AUTHOR("Dorian Peake and Dom Cobley");
+MODULE_DESCRIPTION("CPU frequency driver for BCM2835 chip");
+MODULE_LICENSE("GPL");
+
+module_init(bcm2835_cpufreq_module_init);
+module_exit(bcm2835_cpufreq_module_exit);
diff -Nur linux-3.18.10/drivers/cpufreq/Kconfig.arm linux-rpi/drivers/cpufreq/Kconfig.arm
--- linux-3.18.10/drivers/cpufreq/Kconfig.arm	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/cpufreq/Kconfig.arm	2015-03-26 11:46:46.388230866 +0100
@@ -241,6 +241,14 @@
 	help
 	  This adds the CPUFreq driver support for SPEAr SOCs.
 
+config ARM_BCM2835_CPUFREQ
+	bool "BCM2835 Driver"
+	default y
+	help
+	  This adds the CPUFreq driver for BCM2835
+
+	  If in doubt, say N.
+
 config ARM_TEGRA_CPUFREQ
 	bool "TEGRA CPUFreq support"
 	depends on ARCH_TEGRA
diff -Nur linux-3.18.10/drivers/cpufreq/Makefile linux-rpi/drivers/cpufreq/Makefile
--- linux-3.18.10/drivers/cpufreq/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/cpufreq/Makefile	2015-03-26 11:46:46.388230866 +0100
@@ -75,6 +75,7 @@
 obj-$(CONFIG_ARM_SA1100_CPUFREQ)	+= sa1100-cpufreq.o
 obj-$(CONFIG_ARM_SA1110_CPUFREQ)	+= sa1110-cpufreq.o
 obj-$(CONFIG_ARM_SPEAR_CPUFREQ)		+= spear-cpufreq.o
+obj-$(CONFIG_ARM_BCM2835_CPUFREQ)	+= bcm2835-cpufreq.o
 obj-$(CONFIG_ARM_TEGRA_CPUFREQ)		+= tegra-cpufreq.o
 obj-$(CONFIG_ARM_VEXPRESS_SPC_CPUFREQ)	+= vexpress-spc-cpufreq.o
 
diff -Nur linux-3.18.10/drivers/dma/bcm2708-dmaengine.c linux-rpi/drivers/dma/bcm2708-dmaengine.c
--- linux-3.18.10/drivers/dma/bcm2708-dmaengine.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/dma/bcm2708-dmaengine.c	2015-03-26 11:46:46.792231240 +0100
@@ -0,0 +1,1052 @@
+/*
+ * BCM2835 DMA engine support
+ *
+ * This driver supports cyclic and scatter/gather DMA transfers.
+ *
+ * Author:      Florian Meier <florian.meier@koalo.de>
+ *              Gellert Weisz <gellert@raspberrypi.org>
+ *              Copyright 2013-2014
+ *
+ * Based on
+ *	OMAP DMAengine support by Russell King
+ *
+ *	BCM2708 DMA Driver
+ *	Copyright (C) 2010 Broadcom
+ *
+ *	Raspberry Pi PCM I2S ALSA Driver
+ *	Copyright (c) by Phil Poole 2013
+ *
+ *	MARVELL MMP Peripheral DMA Driver
+ *	Copyright 2012 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/dmaengine.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/spinlock.h>
+
+#ifndef CONFIG_ARCH_BCM2835
+
+/* dma manager */
+#include <mach/dma.h>
+
+//#define DMA_COMPLETE DMA_SUCCESS
+
+#endif
+
+#include <linux/of.h>
+#include <linux/of_dma.h>
+
+#include "virt-dma.h"
+
+
+struct bcm2835_dmadev {
+	struct dma_device ddev;
+	spinlock_t lock;
+	void __iomem *base;
+	struct device_dma_parameters dma_parms;
+};
+
+struct bcm2835_dma_cb {
+	uint32_t info;
+	uint32_t src;
+	uint32_t dst;
+	uint32_t length;
+	uint32_t stride;
+	uint32_t next;
+	uint32_t pad[2];
+};
+
+struct bcm2835_chan {
+	struct virt_dma_chan vc;
+	struct list_head node;
+
+	struct dma_slave_config	cfg;
+	bool cyclic;
+
+	int ch;
+	struct bcm2835_desc *desc;
+
+	void __iomem *chan_base;
+	int irq_number;
+
+	unsigned int dreq;
+};
+
+struct bcm2835_desc {
+	struct virt_dma_desc vd;
+	enum dma_transfer_direction dir;
+
+	unsigned int control_block_size;
+	struct bcm2835_dma_cb *control_block_base;
+	dma_addr_t control_block_base_phys;
+
+	unsigned int frames;
+	size_t size;
+};
+
+#define BCM2835_DMA_CS		0x00
+#define BCM2835_DMA_ADDR	0x04
+#define BCM2835_DMA_SOURCE_AD	0x0c
+#define BCM2835_DMA_DEST_AD	0x10
+#define BCM2835_DMA_NEXTCB	0x1C
+
+/* DMA CS Control and Status bits */
+#define BCM2835_DMA_ACTIVE	BIT(0)
+#define BCM2835_DMA_INT	BIT(2)
+#define BCM2835_DMA_ISPAUSED	BIT(4)  /* Pause requested or not active */
+#define BCM2835_DMA_ISHELD	BIT(5)  /* Is held by DREQ flow control */
+#define BCM2835_DMA_ERR	BIT(8)
+#define BCM2835_DMA_ABORT	BIT(30) /* Stop current CB, go to next, WO */
+#define BCM2835_DMA_RESET	BIT(31) /* WO, self clearing */
+
+#define BCM2835_DMA_INT_EN	BIT(0)
+#define BCM2835_DMA_WAIT_RESP	BIT(3)
+#define BCM2835_DMA_D_INC	BIT(4)
+#define BCM2835_DMA_D_WIDTH	BIT(5)
+#define BCM2835_DMA_D_DREQ	BIT(6)
+#define BCM2835_DMA_S_INC	BIT(8)
+#define BCM2835_DMA_S_WIDTH	BIT(9)
+#define BCM2835_DMA_S_DREQ	BIT(10)
+
+#define BCM2835_DMA_PER_MAP(x)	((x) << 16)
+#define	BCM2835_DMA_WAITS(x)	(((x)&0x1f) << 21)
+
+#define SDHCI_BCM_DMA_WAITS 0  /* delays slowing DMA transfers: 0-31 */
+
+#define BCM2835_DMA_DATA_TYPE_S8	1
+#define BCM2835_DMA_DATA_TYPE_S16	2
+#define BCM2835_DMA_DATA_TYPE_S32	4
+#define BCM2835_DMA_DATA_TYPE_S128	16
+
+#define BCM2835_DMA_BULK_MASK	BIT(0)
+#define BCM2835_DMA_FIQ_MASK	(BIT(2) | BIT(3))
+
+
+/* Valid only for channels 0 - 14, 15 has its own base address */
+#define BCM2835_DMA_CHAN(n)	((n) << 8) /* Base address */
+#define BCM2835_DMA_CHANIO(base, n) ((base) + BCM2835_DMA_CHAN(n))
+
+#define MAX_LITE_TRANSFER 32768
+#define MAX_NORMAL_TRANSFER 1073741824
+
+static inline struct bcm2835_dmadev *to_bcm2835_dma_dev(struct dma_device *d)
+{
+	return container_of(d, struct bcm2835_dmadev, ddev);
+}
+
+static inline struct bcm2835_chan *to_bcm2835_dma_chan(struct dma_chan *c)
+{
+	return container_of(c, struct bcm2835_chan, vc.chan);
+}
+
+static inline struct bcm2835_desc *to_bcm2835_dma_desc(
+		struct dma_async_tx_descriptor *t)
+{
+	return container_of(t, struct bcm2835_desc, vd.tx);
+}
+
+static void dma_dumpregs(struct bcm2835_chan *c)
+{
+	pr_debug("-------------DMA DUMPREGS-------------\n");
+	pr_debug("CS=			%u\n",
+		readl(c->chan_base + BCM2835_DMA_CS));
+	pr_debug("ADDR=			%u\n",
+		readl(c->chan_base + BCM2835_DMA_ADDR));
+	pr_debug("SOURCE_ADDR=	%u\n",
+		readl(c->chan_base + BCM2835_DMA_SOURCE_AD));
+	pr_debug("DEST_AD=		%u\n",
+		readl(c->chan_base + BCM2835_DMA_DEST_AD));
+	pr_debug("NEXTCB=			%u\n",
+		readl(c->chan_base + BCM2835_DMA_NEXTCB));
+	pr_debug("--------------------------------------\n");
+}
+
+static void bcm2835_dma_desc_free(struct virt_dma_desc *vd)
+{
+	struct bcm2835_desc *desc = container_of(vd, struct bcm2835_desc, vd);
+	dma_free_coherent(desc->vd.tx.chan->device->dev,
+			desc->control_block_size,
+			desc->control_block_base,
+			desc->control_block_base_phys);
+	kfree(desc);
+}
+
+static int bcm2835_dma_abort(void __iomem *chan_base)
+{
+	unsigned long cs;
+	long int timeout = 10000;
+
+	cs = readl(chan_base + BCM2835_DMA_CS);
+	if (!(cs & BCM2835_DMA_ACTIVE))
+		return 0;
+
+	/* Write 0 to the active bit - Pause the DMA */
+	writel(0, chan_base + BCM2835_DMA_CS);
+
+	/* Wait for any current AXI transfer to complete */
+	while ((cs & BCM2835_DMA_ISPAUSED) && --timeout) {
+		cpu_relax();
+		cs = readl(chan_base + BCM2835_DMA_CS);
+	}
+
+	/* We'll un-pause when we set of our next DMA */
+	if (!timeout)
+		return -ETIMEDOUT;
+
+	if (!(cs & BCM2835_DMA_ACTIVE))
+		return 0;
+
+	/* Terminate the control block chain */
+	writel(0, chan_base + BCM2835_DMA_NEXTCB);
+
+	/* Abort the whole DMA */
+	writel(BCM2835_DMA_ABORT | BCM2835_DMA_ACTIVE,
+	       chan_base + BCM2835_DMA_CS);
+
+	return 0;
+}
+
+
+static void bcm2835_dma_start_desc(struct bcm2835_chan *c)
+{
+	struct virt_dma_desc *vd = vchan_next_desc(&c->vc);
+	struct bcm2835_desc *d;
+
+	if (!vd) {
+		c->desc = NULL;
+		return;
+	}
+
+	list_del(&vd->node);
+
+	c->desc = d = to_bcm2835_dma_desc(&vd->tx);
+
+	writel(d->control_block_base_phys, c->chan_base + BCM2835_DMA_ADDR);
+	writel(BCM2835_DMA_ACTIVE, c->chan_base + BCM2835_DMA_CS);
+
+}
+
+static irqreturn_t bcm2835_dma_callback(int irq, void *data)
+{
+	struct bcm2835_chan *c = data;
+	struct bcm2835_desc *d;
+	unsigned long flags;
+
+	spin_lock_irqsave(&c->vc.lock, flags);
+
+	/* Acknowledge interrupt */
+	writel(BCM2835_DMA_INT, c->chan_base + BCM2835_DMA_CS);
+
+	d = c->desc;
+
+	if (d) {
+		if (c->cyclic) {
+			vchan_cyclic_callback(&d->vd);
+
+			/* Keep the DMA engine running */
+			writel(BCM2835_DMA_ACTIVE,
+				c->chan_base + BCM2835_DMA_CS);
+
+		} else {
+			vchan_cookie_complete(&c->desc->vd);
+			bcm2835_dma_start_desc(c);
+		}
+	}
+
+	spin_unlock_irqrestore(&c->vc.lock, flags);
+
+	return IRQ_HANDLED;
+}
+
+static int bcm2835_dma_alloc_chan_resources(struct dma_chan *chan)
+{
+	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+	int ret;
+
+	dev_dbg(c->vc.chan.device->dev,
+			"Allocating DMA channel %d\n", c->ch);
+
+	ret = request_irq(c->irq_number,
+			bcm2835_dma_callback, 0, "DMA IRQ", c);
+
+	return ret;
+}
+
+static void bcm2835_dma_free_chan_resources(struct dma_chan *chan)
+{
+	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+
+	vchan_free_chan_resources(&c->vc);
+	free_irq(c->irq_number, c);
+
+	dev_dbg(c->vc.chan.device->dev, "Freeing DMA channel %u\n", c->ch);
+}
+
+static size_t bcm2835_dma_desc_size(struct bcm2835_desc *d)
+{
+	return d->size;
+}
+
+static size_t bcm2835_dma_desc_size_pos(struct bcm2835_desc *d, dma_addr_t addr)
+{
+	unsigned int i;
+	size_t size;
+
+	for (size = i = 0; i < d->frames; i++) {
+		struct bcm2835_dma_cb *control_block =
+			&d->control_block_base[i];
+		size_t this_size = control_block->length;
+		dma_addr_t dma;
+
+		if (d->dir == DMA_DEV_TO_MEM)
+			dma = control_block->dst;
+		else
+			dma = control_block->src;
+
+		if (size)
+			size += this_size;
+		else if (addr >= dma && addr < dma + this_size)
+			size += dma + this_size - addr;
+	}
+
+	return size;
+}
+
+static enum dma_status bcm2835_dma_tx_status(struct dma_chan *chan,
+	dma_cookie_t cookie, struct dma_tx_state *txstate)
+{
+	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+	struct bcm2835_desc *d;
+	struct virt_dma_desc *vd;
+	enum dma_status ret;
+	unsigned long flags;
+	dma_addr_t pos;
+
+	ret = dma_cookie_status(chan, cookie, txstate);
+	if (ret == DMA_COMPLETE || !txstate)
+		return ret;
+
+	spin_lock_irqsave(&c->vc.lock, flags);
+	vd = vchan_find_desc(&c->vc, cookie);
+	if (vd) {
+		txstate->residue =
+			bcm2835_dma_desc_size(to_bcm2835_dma_desc(&vd->tx));
+	} else if (c->desc && c->desc->vd.tx.cookie == cookie) {
+		d = c->desc;
+
+		if (d->dir == DMA_MEM_TO_DEV)
+			pos = readl(c->chan_base + BCM2835_DMA_SOURCE_AD);
+		else if (d->dir == DMA_DEV_TO_MEM)
+			pos = readl(c->chan_base + BCM2835_DMA_DEST_AD);
+		else
+			pos = 0;
+
+		txstate->residue = bcm2835_dma_desc_size_pos(d, pos);
+	} else {
+		txstate->residue = 0;
+	}
+
+	spin_unlock_irqrestore(&c->vc.lock, flags);
+
+	return ret;
+}
+
+static void bcm2835_dma_issue_pending(struct dma_chan *chan)
+{
+	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+	unsigned long flags;
+
+	spin_lock_irqsave(&c->vc.lock, flags);
+	if (vchan_issue_pending(&c->vc) && !c->desc)
+		bcm2835_dma_start_desc(c);
+
+	spin_unlock_irqrestore(&c->vc.lock, flags);
+}
+
+static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic(
+	struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
+	size_t period_len, enum dma_transfer_direction direction,
+	unsigned long flags)
+{
+	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+	enum dma_slave_buswidth dev_width;
+	struct bcm2835_desc *d;
+	dma_addr_t dev_addr;
+	unsigned int es, sync_type;
+	unsigned int frame, max_size;
+
+	/* Grab configuration */
+	if (!is_slave_direction(direction)) {
+		dev_err(chan->device->dev, "%s: bad direction?\n", __func__);
+		return NULL;
+	}
+
+	if (direction == DMA_DEV_TO_MEM) {
+		dev_addr = c->cfg.src_addr;
+		dev_width = c->cfg.src_addr_width;
+		sync_type = BCM2835_DMA_S_DREQ;
+	} else {
+		dev_addr = c->cfg.dst_addr;
+		dev_width = c->cfg.dst_addr_width;
+		sync_type = BCM2835_DMA_D_DREQ;
+	}
+
+	/* Bus width translates to the element size (ES) */
+	switch (dev_width) {
+	case DMA_SLAVE_BUSWIDTH_4_BYTES:
+		es = BCM2835_DMA_DATA_TYPE_S32;
+		break;
+	default:
+		return NULL;
+	}
+
+	/* Now allocate and setup the descriptor. */
+	d = kzalloc(sizeof(*d), GFP_NOWAIT);
+	if (!d)
+		return NULL;
+
+	d->dir = direction;
+
+	if (c->ch >= 8) /* we have a LITE channel */
+		max_size = MAX_LITE_TRANSFER;
+	else
+		max_size = MAX_NORMAL_TRANSFER;
+	period_len = min(period_len, max_size);
+
+	d->frames = (buf_len-1) / period_len + 1;
+
+	/* Allocate memory for control blocks */
+	d->control_block_size = d->frames * sizeof(struct bcm2835_dma_cb);
+	d->control_block_base = dma_zalloc_coherent(chan->device->dev,
+			d->control_block_size, &d->control_block_base_phys,
+			GFP_NOWAIT);
+
+	if (!d->control_block_base) {
+		kfree(d);
+		return NULL;
+	}
+
+	/*
+	 * Iterate over all frames, create a control block
+	 * for each frame and link them together.
+	 */
+	for (frame = 0; frame < d->frames; frame++) {
+		struct bcm2835_dma_cb *control_block =
+			&d->control_block_base[frame];
+
+		/* Setup adresses */
+		if (d->dir == DMA_DEV_TO_MEM) {
+			control_block->info = BCM2835_DMA_D_INC;
+			control_block->src = dev_addr;
+			control_block->dst = buf_addr + frame * period_len;
+		} else {
+			control_block->info = BCM2835_DMA_S_INC;
+			control_block->src = buf_addr + frame * period_len;
+			control_block->dst = dev_addr;
+		}
+
+		/* Enable interrupt */
+		control_block->info |= BCM2835_DMA_INT_EN;
+
+		/* Setup synchronization */
+		if (sync_type != 0)
+			control_block->info |= sync_type;
+
+		/* Setup DREQ channel */
+		if (c->cfg.slave_id != 0)
+			control_block->info |=
+				BCM2835_DMA_PER_MAP(c->cfg.slave_id);
+
+		/* Length of a frame */
+		if (frame != d->frames-1)
+			control_block->length = period_len;
+		else
+			control_block->length = buf_len - (d->frames - 1) * period_len;
+
+		d->size += control_block->length;
+
+		/*
+		 * Next block is the next frame.
+		 * This function is called on cyclic DMA transfers.
+		 * Therefore, wrap around at number of frames.
+		 */
+		control_block->next = d->control_block_base_phys +
+			sizeof(struct bcm2835_dma_cb)
+			* ((frame + 1) % d->frames);
+	}
+
+	c->cyclic = true;
+
+	return vchan_tx_prep(&c->vc, &d->vd, flags);
+}
+
+
+static struct dma_async_tx_descriptor *bcm2835_dma_prep_slave_sg(
+	struct dma_chan *chan, struct scatterlist *sgl,
+	unsigned int sg_len, enum dma_transfer_direction direction,
+	unsigned long flags, void *context)
+{
+	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+	enum dma_slave_buswidth dev_width;
+	struct bcm2835_desc *d;
+	dma_addr_t dev_addr;
+	struct scatterlist *sgent;
+	unsigned int es, sync_type;
+	unsigned int i, j, splitct, max_size;
+
+	if (!is_slave_direction(direction)) {
+		dev_err(chan->device->dev, "%s: bad direction?\n", __func__);
+		return NULL;
+	}
+
+	if (direction == DMA_DEV_TO_MEM) {
+		dev_addr = c->cfg.src_addr;
+		dev_width = c->cfg.src_addr_width;
+		sync_type = BCM2835_DMA_S_DREQ;
+	} else {
+		dev_addr = c->cfg.dst_addr;
+		dev_width = c->cfg.dst_addr_width;
+		sync_type = BCM2835_DMA_D_DREQ;
+	}
+
+	/* Bus width translates to the element size (ES) */
+	switch (dev_width) {
+	case DMA_SLAVE_BUSWIDTH_4_BYTES:
+		es = BCM2835_DMA_DATA_TYPE_S32;
+		break;
+	default:
+		return NULL;
+	}
+
+	/* Now allocate and setup the descriptor. */
+	d = kzalloc(sizeof(*d), GFP_NOWAIT);
+	if (!d)
+		return NULL;
+
+	d->dir = direction;
+
+	if (c->ch >= 8) /* we have a LITE channel */
+		max_size = MAX_LITE_TRANSFER;
+	else
+		max_size = MAX_NORMAL_TRANSFER;
+
+	/* We store the length of the SG list in d->frames
+	   taking care to account for splitting up transfers
+	   too large for a LITE channel */
+
+	d->frames = 0;
+	for_each_sg(sgl, sgent, sg_len, i) {
+		uint32_t len = sg_dma_len(sgent);
+		d->frames += 1 + len / max_size;
+	}
+
+	/* Allocate memory for control blocks */
+	d->control_block_size = d->frames * sizeof(struct bcm2835_dma_cb);
+	d->control_block_base = dma_zalloc_coherent(chan->device->dev,
+			d->control_block_size, &d->control_block_base_phys,
+			GFP_NOWAIT);
+
+	if (!d->control_block_base) {
+		kfree(d);
+		return NULL;
+	}
+
+	/*
+	 * Iterate over all SG entries, create a control block
+	 * for each frame and link them together.
+	 */
+
+	/* we count the number of times an SG entry had to be splitct
+	   as a result of using a LITE channel */
+	splitct = 0;
+
+	for_each_sg(sgl, sgent, sg_len, i) {
+		dma_addr_t addr = sg_dma_address(sgent);
+		uint32_t len = sg_dma_len(sgent);
+
+		for (j = 0; j < len; j += max_size) {
+			struct bcm2835_dma_cb *control_block =
+				&d->control_block_base[i+splitct];
+
+			/* Setup adresses */
+			if (d->dir == DMA_DEV_TO_MEM) {
+				control_block->info = BCM2835_DMA_D_INC |
+					BCM2835_DMA_D_WIDTH | BCM2835_DMA_S_DREQ;
+				control_block->src = dev_addr;
+				control_block->dst = addr + (dma_addr_t)j;
+			} else {
+				control_block->info = BCM2835_DMA_S_INC |
+					BCM2835_DMA_S_WIDTH | BCM2835_DMA_D_DREQ;
+				control_block->src = addr + (dma_addr_t)j;
+				control_block->dst = dev_addr;
+			}
+
+			/* Common part */
+			control_block->info |= BCM2835_DMA_WAITS(SDHCI_BCM_DMA_WAITS);
+			control_block->info |= BCM2835_DMA_WAIT_RESP;
+
+			/* Enable  */
+			if (i == sg_len-1 && len-j <= max_size)
+				control_block->info |= BCM2835_DMA_INT_EN;
+
+			/* Setup synchronization */
+			if (sync_type != 0)
+				control_block->info |= sync_type;
+
+			/* Setup DREQ channel */
+			c->dreq = c->cfg.slave_id; /* DREQ loaded from config */
+
+			if (c->dreq != 0)
+				control_block->info |=
+					BCM2835_DMA_PER_MAP(c->dreq);
+
+			/* Length of a frame */
+			control_block->length = min(len-j, max_size);
+			d->size += control_block->length;
+
+			/*
+			 * Next block is the next frame.
+			 */
+			if (i < sg_len-1 || len-j > max_size) {
+				/* next block is the next frame. */
+				control_block->next = d->control_block_base_phys +
+				sizeof(struct bcm2835_dma_cb) * (i + splitct + 1);
+			} else {
+				/* next block is empty. */
+				control_block->next = 0;
+			}
+
+			if (len-j > max_size)
+				splitct++;
+		}
+	}
+
+	c->cyclic = false;
+
+	return vchan_tx_prep(&c->vc, &d->vd, flags);
+}
+
+static int bcm2835_dma_slave_config(struct bcm2835_chan *c,
+		struct dma_slave_config *cfg)
+{
+	if ((cfg->direction == DMA_DEV_TO_MEM &&
+	     cfg->src_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES) ||
+	    (cfg->direction == DMA_MEM_TO_DEV &&
+	     cfg->dst_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES) ||
+	    !is_slave_direction(cfg->direction)) {
+		return -EINVAL;
+	}
+
+	c->cfg = *cfg;
+
+	return 0;
+}
+
+static int bcm2835_dma_terminate_all(struct bcm2835_chan *c)
+{
+	struct bcm2835_dmadev *d = to_bcm2835_dma_dev(c->vc.chan.device);
+	unsigned long flags;
+	int timeout = 10000;
+	LIST_HEAD(head);
+
+	spin_lock_irqsave(&c->vc.lock, flags);
+
+	/* Prevent this channel being scheduled */
+	spin_lock(&d->lock);
+	list_del_init(&c->node);
+	spin_unlock(&d->lock);
+
+	/*
+	 * Stop DMA activity: we assume the callback will not be called
+	 * after bcm_dma_abort() returns (even if it does, it will see
+	 * c->desc is NULL and exit.)
+	 */
+	if (c->desc) {
+		c->desc = NULL;
+		bcm2835_dma_abort(c->chan_base);
+
+		/* Wait for stopping */
+		while (--timeout) {
+			if (!(readl(c->chan_base + BCM2835_DMA_CS) &
+						BCM2835_DMA_ACTIVE))
+				break;
+
+			cpu_relax();
+		}
+
+		if (!timeout)
+			dev_err(d->ddev.dev, "DMA transfer could not be terminated\n");
+	}
+
+	vchan_get_all_descriptors(&c->vc, &head);
+	spin_unlock_irqrestore(&c->vc.lock, flags);
+	vchan_dma_desc_free_list(&c->vc, &head);
+
+	return 0;
+}
+
+static int bcm2835_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
+	unsigned long arg)
+{
+	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+
+	switch (cmd) {
+	case DMA_SLAVE_CONFIG:
+		return bcm2835_dma_slave_config(c,
+				(struct dma_slave_config *)arg);
+
+	case DMA_TERMINATE_ALL:
+		return bcm2835_dma_terminate_all(c);
+
+	default:
+		return -ENXIO;
+	}
+}
+
+#ifdef CONFIG_ARCH_BCM2835
+static int bcm2835_dma_chan_init(struct bcm2835_dmadev *d, int chan_id, int irq)
+{
+	struct bcm2835_chan *c;
+
+	c = devm_kzalloc(d->ddev.dev, sizeof(*c), GFP_KERNEL);
+	if (!c)
+		return -ENOMEM;
+
+	c->vc.desc_free = bcm2835_dma_desc_free;
+	vchan_init(&c->vc, &d->ddev);
+	INIT_LIST_HEAD(&c->node);
+
+	d->ddev.chancnt++;
+
+	c->chan_base = BCM2835_DMA_CHANIO(d->base, chan_id);
+	c->ch = chan_id;
+	c->irq_number = irq;
+
+	return 0;
+}
+#endif
+
+static int bcm2708_dma_chan_init(struct bcm2835_dmadev *d,
+	void __iomem *chan_base, int chan_id, int irq)
+{
+	struct bcm2835_chan *c;
+
+	c = devm_kzalloc(d->ddev.dev, sizeof(*c), GFP_KERNEL);
+	if (!c)
+		return -ENOMEM;
+
+	c->vc.desc_free = bcm2835_dma_desc_free;
+	vchan_init(&c->vc, &d->ddev);
+	INIT_LIST_HEAD(&c->node);
+
+	d->ddev.chancnt++;
+
+	c->chan_base = chan_base;
+	c->ch = chan_id;
+	c->irq_number = irq;
+
+	return 0;
+}
+
+
+static void bcm2835_dma_free(struct bcm2835_dmadev *od)
+{
+	struct bcm2835_chan *c, *next;
+
+	list_for_each_entry_safe(c, next, &od->ddev.channels,
+				 vc.chan.device_node) {
+		list_del(&c->vc.chan.device_node);
+		tasklet_kill(&c->vc.task);
+	}
+}
+
+static const struct of_device_id bcm2835_dma_of_match[] = {
+	{ .compatible = "brcm,bcm2835-dma", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, bcm2835_dma_of_match);
+
+#ifdef CONFIG_ARCH_BCM2835
+static struct dma_chan *bcm2835_dma_xlate(struct of_phandle_args *spec,
+					   struct of_dma *ofdma)
+{
+	struct bcm2835_dmadev *d = ofdma->of_dma_data;
+	struct dma_chan *chan;
+
+	chan = dma_get_any_slave_channel(&d->ddev);
+	if (!chan)
+		return NULL;
+
+	/* Set DREQ from param */
+	to_bcm2835_dma_chan(chan)->dreq = spec->args[0];
+
+	return chan;
+}
+#endif
+
+static int bcm2835_dma_device_slave_caps(struct dma_chan *dchan,
+	struct dma_slave_caps *caps)
+{
+	caps->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+	caps->dstn_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+	caps->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+	caps->cmd_pause = false;
+	caps->cmd_terminate = true;
+
+	return 0;
+}
+
+static int bcm2835_dma_probe(struct platform_device *pdev)
+{
+	struct bcm2835_dmadev *od;
+#ifdef CONFIG_ARCH_BCM2835
+	struct resource *res;
+	void __iomem *base;
+	uint32_t chans_available;
+#endif
+	int rc;
+	int i;
+	int irq;
+
+
+	if (!pdev->dev.dma_mask)
+		pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+
+	/* If CONFIG_ARCH_BCM2835 is selected, device tree is used */
+	/* hence the difference between probing */
+
+#ifndef CONFIG_ARCH_BCM2835
+
+	rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+	if (rc)
+		return rc;
+	dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+
+
+	od = devm_kzalloc(&pdev->dev, sizeof(*od), GFP_KERNEL);
+	if (!od)
+		return -ENOMEM;
+
+	pdev->dev.dma_parms = &od->dma_parms;
+	dma_set_max_seg_size(&pdev->dev, 0x3FFFFFFF);
+
+
+	dma_cap_set(DMA_SLAVE, od->ddev.cap_mask);
+	dma_cap_set(DMA_PRIVATE, od->ddev.cap_mask);
+	dma_cap_set(DMA_CYCLIC, od->ddev.cap_mask);
+	od->ddev.device_alloc_chan_resources = bcm2835_dma_alloc_chan_resources;
+	od->ddev.device_free_chan_resources = bcm2835_dma_free_chan_resources;
+	od->ddev.device_tx_status = bcm2835_dma_tx_status;
+	od->ddev.device_issue_pending = bcm2835_dma_issue_pending;
+	od->ddev.device_slave_caps = bcm2835_dma_device_slave_caps;
+	od->ddev.device_prep_dma_cyclic = bcm2835_dma_prep_dma_cyclic;
+	od->ddev.device_prep_slave_sg = bcm2835_dma_prep_slave_sg;
+	od->ddev.device_control = bcm2835_dma_control;
+	od->ddev.dev = &pdev->dev;
+	INIT_LIST_HEAD(&od->ddev.channels);
+	spin_lock_init(&od->lock);
+
+	platform_set_drvdata(pdev, od);
+
+	for (i = 0; i < 5; i++) {
+		void __iomem *chan_base;
+		int chan_id;
+
+		chan_id = bcm_dma_chan_alloc(BCM_DMA_FEATURE_LITE,
+			&chan_base,
+			&irq);
+
+		if (chan_id < 0)
+			break;
+
+		rc = bcm2708_dma_chan_init(od, chan_base, chan_id, irq);
+		if (rc)
+			goto err_no_dma;
+	}
+#else
+	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (rc)
+		return rc;
+
+
+	od = devm_kzalloc(&pdev->dev, sizeof(*od), GFP_KERNEL);
+	if (!od)
+		return -ENOMEM;
+
+	pdev->dev.dma_parms = &od->dma_parms;
+	dma_set_max_seg_size(&pdev->dev, 0x3FFFFFFF);
+
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	od->base = base;
+
+
+	dma_cap_set(DMA_SLAVE, od->ddev.cap_mask);
+	dma_cap_set(DMA_PRIVATE, od->ddev.cap_mask);
+	dma_cap_set(DMA_CYCLIC, od->ddev.cap_mask);
+	od->ddev.device_alloc_chan_resources = bcm2835_dma_alloc_chan_resources;
+	od->ddev.device_free_chan_resources = bcm2835_dma_free_chan_resources;
+	od->ddev.device_tx_status = bcm2835_dma_tx_status;
+	od->ddev.device_issue_pending = bcm2835_dma_issue_pending;
+	od->ddev.device_slave_caps = bcm2835_dma_device_slave_caps;
+	od->ddev.device_prep_dma_cyclic = bcm2835_dma_prep_dma_cyclic;
+	od->ddev.device_prep_slave_sg = bcm2835_dma_prep_slave_sg;
+	od->ddev.device_control = bcm2835_dma_control;
+	od->ddev.dev = &pdev->dev;
+	INIT_LIST_HEAD(&od->ddev.channels);
+	spin_lock_init(&od->lock);
+
+	platform_set_drvdata(pdev, od);
+
+
+	/* Request DMA channel mask from device tree */
+	if (of_property_read_u32(pdev->dev.of_node,
+			"brcm,dma-channel-mask",
+			&chans_available)) {
+		dev_err(&pdev->dev, "Failed to get channel mask\n");
+		rc = -EINVAL;
+		goto err_no_dma;
+	}
+
+
+	/*
+	 * Do not use the FIQ and BULK channels,
+	 * because they are used by the GPU.
+	 */
+	chans_available &= ~(BCM2835_DMA_FIQ_MASK | BCM2835_DMA_BULK_MASK);
+
+
+	for (i = 0; i < pdev->num_resources; i++) {
+		irq = platform_get_irq(pdev, i);
+		if (irq < 0)
+			break;
+
+		if (chans_available & (1 << i)) {
+			rc = bcm2835_dma_chan_init(od, i, irq);
+			if (rc)
+				goto err_no_dma;
+		}
+	}
+
+	dev_dbg(&pdev->dev, "Initialized %i DMA channels\n", i);
+
+	/* Device-tree DMA controller registration */
+	rc = of_dma_controller_register(pdev->dev.of_node,
+			bcm2835_dma_xlate, od);
+	if (rc) {
+		dev_err(&pdev->dev, "Failed to register DMA controller\n");
+		goto err_no_dma;
+	}
+#endif
+
+	rc = dma_async_device_register(&od->ddev);
+	if (rc) {
+		dev_err(&pdev->dev,
+			"Failed to register slave DMA engine device: %d\n", rc);
+		goto err_no_dma;
+	}
+
+	dev_info(&pdev->dev, "Load BCM2835 DMA engine driver\n");
+
+	return 0;
+
+err_no_dma:
+	bcm2835_dma_free(od);
+	return rc;
+}
+
+static int bcm2835_dma_remove(struct platform_device *pdev)
+{
+	struct bcm2835_dmadev *od = platform_get_drvdata(pdev);
+
+	dma_async_device_unregister(&od->ddev);
+	bcm2835_dma_free(od);
+
+	return 0;
+}
+
+#ifndef CONFIG_ARCH_BCM2835
+
+
+static struct platform_driver bcm2835_dma_driver = {
+	.probe	= bcm2835_dma_probe,
+	.remove	= bcm2835_dma_remove,
+	.driver = {
+		.name = "bcm2708-dmaengine",
+		.owner = THIS_MODULE,
+	},
+};
+
+static struct platform_device *pdev;
+
+static const struct platform_device_info bcm2835_dma_dev_info = {
+	.name = "bcm2708-dmaengine",
+	.id = -1,
+};
+
+static int bcm2835_dma_init(void)
+{
+	int rc = platform_driver_register(&bcm2835_dma_driver);
+
+	if (rc == 0) {
+		pdev = platform_device_register_full(&bcm2835_dma_dev_info);
+		if (IS_ERR(pdev)) {
+			platform_driver_unregister(&bcm2835_dma_driver);
+			rc = PTR_ERR(pdev);
+		}
+	}
+
+	return rc;
+}
+module_init(bcm2835_dma_init); /* preferable to subsys_initcall */
+
+static void __exit bcm2835_dma_exit(void)
+{
+	platform_device_unregister(pdev);
+	platform_driver_unregister(&bcm2835_dma_driver);
+}
+module_exit(bcm2835_dma_exit);
+
+#else
+
+static struct platform_driver bcm2835_dma_driver = {
+	.probe	= bcm2835_dma_probe,
+	.remove	= bcm2835_dma_remove,
+	.driver = {
+		.name = "bcm2835-dma",
+		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(bcm2835_dma_of_match),
+	},
+};
+
+module_platform_driver(bcm2835_dma_driver);
+
+#endif
+
+MODULE_ALIAS("platform:bcm2835-dma");
+MODULE_DESCRIPTION("BCM2835 DMA engine driver");
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_AUTHOR("Gellert Weisz <gellert@raspberrypi.org>");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/drivers/dma/Kconfig linux-rpi/drivers/dma/Kconfig
--- linux-3.18.10/drivers/dma/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/dma/Kconfig	2015-03-26 11:46:46.792231240 +0100
@@ -330,6 +330,12 @@
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS
 
+config DMA_BCM2708
+	tristate "BCM2708 DMA engine support"
+	depends on MACH_BCM2708 || MACH_BCM2709
+	select DMA_ENGINE
+	select DMA_VIRTUAL_CHANNELS
+
 config TI_CPPI41
 	tristate "AM33xx CPPI41 DMA support"
 	depends on ARCH_OMAP
diff -Nur linux-3.18.10/drivers/dma/Makefile linux-rpi/drivers/dma/Makefile
--- linux-3.18.10/drivers/dma/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/dma/Makefile	2015-03-26 11:46:46.792231240 +0100
@@ -38,6 +38,7 @@
 obj-$(CONFIG_MMP_TDMA) += mmp_tdma.o
 obj-$(CONFIG_DMA_OMAP) += omap-dma.o
 obj-$(CONFIG_DMA_BCM2835) += bcm2835-dma.o
+obj-$(CONFIG_DMA_BCM2708) += bcm2708-dmaengine.o
 obj-$(CONFIG_MMP_PDMA) += mmp_pdma.o
 obj-$(CONFIG_DMA_JZ4740) += dma-jz4740.o
 obj-$(CONFIG_TI_CPPI41) += cppi41.o
diff -Nur linux-3.18.10/drivers/hid/usbhid/hid-core.c linux-rpi/drivers/hid/usbhid/hid-core.c
--- linux-3.18.10/drivers/hid/usbhid/hid-core.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/hid/usbhid/hid-core.c	2015-03-26 11:46:50.116234319 +0100
@@ -49,7 +49,7 @@
  * Module parameters.
  */
 
-static unsigned int hid_mousepoll_interval;
+static unsigned int hid_mousepoll_interval = ~0;
 module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
 MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
 
@@ -1079,8 +1079,12 @@
 		}
 
 		/* Change the polling interval of mice. */
-		if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
-			interval = hid_mousepoll_interval;
+		if (hid->collection->usage == HID_GD_MOUSE) {
+				if (hid_mousepoll_interval == ~0 && interval < 16)
+						interval = 16;
+				else if (hid_mousepoll_interval != ~0 && hid_mousepoll_interval != 0)
+						interval = hid_mousepoll_interval;
+		}
 
 		ret = -ENOMEM;
 		if (usb_endpoint_dir_in(endpoint)) {
diff -Nur linux-3.18.10/drivers/hwmon/bcm2835-hwmon.c linux-rpi/drivers/hwmon/bcm2835-hwmon.c
--- linux-3.18.10/drivers/hwmon/bcm2835-hwmon.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/hwmon/bcm2835-hwmon.c	2015-03-26 11:46:50.124234326 +0100
@@ -0,0 +1,219 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/platform_device.h>
+#include <linux/sysfs.h>
+#include <mach/vcio.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+
+#define MODULE_NAME "bcm2835_hwmon"
+
+/*#define HWMON_DEBUG_ENABLE*/
+
+#ifdef HWMON_DEBUG_ENABLE
+#define print_debug(fmt,...) printk(KERN_INFO "%s:%s:%d: "fmt"\n", MODULE_NAME, __func__, __LINE__, ##__VA_ARGS__)
+#else
+#define print_debug(fmt,...)
+#endif
+#define print_err(fmt,...) printk(KERN_ERR "%s:%s:%d: "fmt"\n", MODULE_NAME, __func__,__LINE__, ##__VA_ARGS__)
+#define print_info(fmt,...) printk(KERN_INFO "%s: "fmt"\n", MODULE_NAME, ##__VA_ARGS__)
+
+#define VC_TAG_GET_TEMP 0x00030006
+#define VC_TAG_GET_MAX_TEMP 0x0003000A
+
+/* --- STRUCTS --- */
+struct bcm2835_hwmon_data {
+	struct device *hwmon_dev;
+};
+
+/* tag part of the message */
+struct vc_msg_tag {
+	uint32_t tag_id;		/* the tag ID for the temperature */
+	uint32_t buffer_size;	/* size of the buffer (should be 8) */
+	uint32_t request_code;	/* identifies message as a request (should be 0) */
+	uint32_t id;			/* extra ID field (should be 0) */
+	uint32_t val;			/* returned value of the temperature */
+};
+
+/* message structure to be sent to videocore */
+struct vc_msg {
+	uint32_t msg_size;		/* simply, sizeof(struct vc_msg) */
+	uint32_t request_code;		/* holds various information like the success and number of bytes returned (refer to mailboxes wiki) */
+	struct vc_msg_tag tag;		/* the tag structure above to make */
+	uint32_t end_tag;		/* an end identifier, should be set to NULL */
+};
+
+typedef enum {
+	TEMP,
+	MAX_TEMP,
+} temp_type;
+
+/* --- PROTOTYPES --- */
+static ssize_t bcm2835_get_temp(struct device *dev, struct device_attribute *attr, char *buf);
+static ssize_t bcm2835_get_name(struct device *dev, struct device_attribute *attr, char *buf);
+
+/* --- GLOBALS --- */
+
+static struct bcm2835_hwmon_data *bcm2835_data;
+static struct platform_driver bcm2835_hwmon_driver;
+
+static SENSOR_DEVICE_ATTR(name, S_IRUGO,bcm2835_get_name,NULL,0);
+static SENSOR_DEVICE_ATTR(temp1_input,S_IRUGO,bcm2835_get_temp,NULL,TEMP);
+static SENSOR_DEVICE_ATTR(temp1_max,S_IRUGO,bcm2835_get_temp,NULL,MAX_TEMP);
+
+static struct attribute* bcm2835_attributes[] = {
+	&sensor_dev_attr_name.dev_attr.attr,
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	NULL,
+};
+
+static struct attribute_group bcm2835_attr_group = {
+	.attrs = bcm2835_attributes,
+};
+
+/* --- FUNCTIONS --- */
+
+static ssize_t bcm2835_get_name(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf,"bcm2835_hwmon\n");
+}
+
+static ssize_t bcm2835_get_temp(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct vc_msg msg;
+	int result;
+	uint temp = 0;
+	int index = ((struct sensor_device_attribute*)to_sensor_dev_attr(attr))->index;
+
+	print_debug("IN");
+
+	/* wipe all previous message data */
+	memset(&msg, 0, sizeof msg);
+
+	/* determine the message type */
+	if(index == TEMP)
+		msg.tag.tag_id = VC_TAG_GET_TEMP;
+	else if (index == MAX_TEMP)
+		msg.tag.tag_id = VC_TAG_GET_MAX_TEMP;
+	else
+	{
+		print_debug("Unknown temperature message!");
+		return -EINVAL;
+	}
+
+	msg.msg_size = sizeof msg;
+	msg.tag.buffer_size = 8;
+
+	/* send the message */
+	result = bcm_mailbox_property(&msg, sizeof msg);
+
+	/* check if it was all ok and return the rate in milli degrees C */
+	if (result == 0 && (msg.request_code & 0x80000000))
+		temp = (uint)msg.tag.val;
+	#ifdef HWMON_DEBUG_ENABLE
+	else
+		print_debug("Failed to get temperature!");
+	#endif
+	print_debug("Got temperature as %u",temp);
+	print_debug("OUT");
+	return sprintf(buf, "%u\n", temp);
+}
+
+
+static int bcm2835_hwmon_probe(struct platform_device *pdev)
+{
+	int err;
+
+	print_debug("IN");
+	print_debug("HWMON Driver has been probed!");
+
+	/* check that the device isn't null!*/
+	if(pdev == NULL)
+	{
+		print_debug("Platform device is empty!");
+		return -ENODEV;
+	}
+
+	/* allocate memory for neccessary data */
+	bcm2835_data = kzalloc(sizeof(struct bcm2835_hwmon_data),GFP_KERNEL);
+	if(!bcm2835_data)
+	{
+		print_debug("Unable to allocate memory for hwmon data!");
+		err = -ENOMEM;
+		goto kzalloc_error;
+	}
+
+	/* create the sysfs files */
+	if(sysfs_create_group(&pdev->dev.kobj, &bcm2835_attr_group))
+	{
+		print_debug("Unable to create sysfs files!");
+		err = -EFAULT;
+		goto sysfs_error;
+	}
+
+	/* register the hwmon device */
+	bcm2835_data->hwmon_dev = hwmon_device_register(&pdev->dev);
+	if (IS_ERR(bcm2835_data->hwmon_dev))
+	{
+		err = PTR_ERR(bcm2835_data->hwmon_dev);
+		goto hwmon_error;
+	}
+	print_debug("OUT");
+	return 0;
+
+	/* error goto's */
+	hwmon_error:
+	sysfs_remove_group(&pdev->dev.kobj, &bcm2835_attr_group);
+
+	sysfs_error:
+	kfree(bcm2835_data);
+
+	kzalloc_error:
+
+	return err;
+
+}
+
+static int bcm2835_hwmon_remove(struct platform_device *pdev)
+{
+	print_debug("IN");
+	hwmon_device_unregister(bcm2835_data->hwmon_dev);
+
+	sysfs_remove_group(&pdev->dev.kobj, &bcm2835_attr_group);
+	print_debug("OUT");
+	return 0;
+}
+
+/* Hwmon Driver */
+static struct platform_driver bcm2835_hwmon_driver = {
+	.probe = bcm2835_hwmon_probe,
+	.remove = bcm2835_hwmon_remove,
+	.driver = {
+				.name = "bcm2835_hwmon",
+				.owner = THIS_MODULE,
+			},
+};
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dorian Peake");
+MODULE_DESCRIPTION("HW Monitor driver for bcm2835 chip");
+
+module_platform_driver(bcm2835_hwmon_driver);
diff -Nur linux-3.18.10/drivers/hwmon/Kconfig linux-rpi/drivers/hwmon/Kconfig
--- linux-3.18.10/drivers/hwmon/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/hwmon/Kconfig	2015-03-26 11:46:50.120234322 +0100
@@ -1680,6 +1680,16 @@
 	  This driver provides support for the Ultra45 workstation environmental
 	  sensors.
 
+config SENSORS_BCM2835
+	depends on THERMAL_BCM2835=n
+	tristate "Broadcom BCM2835 HWMON Driver"
+	help
+	  If you say yes here you get support for the hardware
+	  monitoring features of the BCM2835 Chip
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called bcm2835-hwmon.
+
 if ACPI
 
 comment "ACPI drivers"
diff -Nur linux-3.18.10/drivers/hwmon/Makefile linux-rpi/drivers/hwmon/Makefile
--- linux-3.18.10/drivers/hwmon/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/hwmon/Makefile	2015-03-26 11:46:50.120234322 +0100
@@ -153,6 +153,7 @@
 obj-$(CONFIG_SENSORS_W83L786NG)	+= w83l786ng.o
 obj-$(CONFIG_SENSORS_WM831X)	+= wm831x-hwmon.o
 obj-$(CONFIG_SENSORS_WM8350)	+= wm8350-hwmon.o
+obj-$(CONFIG_SENSORS_BCM2835)	+= bcm2835-hwmon.o
 
 obj-$(CONFIG_PMBUS)		+= pmbus/
 
diff -Nur linux-3.18.10/drivers/i2c/busses/i2c-bcm2708.c linux-rpi/drivers/i2c/busses/i2c-bcm2708.c
--- linux-3.18.10/drivers/i2c/busses/i2c-bcm2708.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/i2c/busses/i2c-bcm2708.c	2015-03-26 11:46:50.140234341 +0100
@@ -0,0 +1,521 @@
+/*
+ * Driver for Broadcom BCM2708 BSC Controllers
+ *
+ * Copyright (C) 2012 Chris Boot & Frank Buss
+ *
+ * This driver is inspired by:
+ * i2c-ocores.c, by Peter Korsgaard <jacmet@sunsite.dk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+
+/* BSC register offsets */
+#define BSC_C			0x00
+#define BSC_S			0x04
+#define BSC_DLEN		0x08
+#define BSC_A			0x0c
+#define BSC_FIFO		0x10
+#define BSC_DIV			0x14
+#define BSC_DEL			0x18
+#define BSC_CLKT		0x1c
+
+/* Bitfields in BSC_C */
+#define BSC_C_I2CEN		0x00008000
+#define BSC_C_INTR		0x00000400
+#define BSC_C_INTT		0x00000200
+#define BSC_C_INTD		0x00000100
+#define BSC_C_ST		0x00000080
+#define BSC_C_CLEAR_1		0x00000020
+#define BSC_C_CLEAR_2		0x00000010
+#define BSC_C_READ		0x00000001
+
+/* Bitfields in BSC_S */
+#define BSC_S_CLKT		0x00000200
+#define BSC_S_ERR		0x00000100
+#define BSC_S_RXF		0x00000080
+#define BSC_S_TXE		0x00000040
+#define BSC_S_RXD		0x00000020
+#define BSC_S_TXD		0x00000010
+#define BSC_S_RXR		0x00000008
+#define BSC_S_TXW		0x00000004
+#define BSC_S_DONE		0x00000002
+#define BSC_S_TA		0x00000001
+
+#define I2C_TIMEOUT_MS	150
+#define I2C_WAIT_LOOP_COUNT 40
+
+#define DRV_NAME	"bcm2708_i2c"
+
+static unsigned int baudrate = CONFIG_I2C_BCM2708_BAUDRATE;
+module_param(baudrate, uint, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
+MODULE_PARM_DESC(baudrate, "The I2C baudrate");
+
+static bool combined = false;
+module_param(combined, bool, 0644);
+MODULE_PARM_DESC(combined, "Use combined transactions");
+
+struct bcm2708_i2c {
+	struct i2c_adapter adapter;
+
+	spinlock_t lock;
+	void __iomem *base;
+	int irq;
+	struct clk *clk;
+	u32 cdiv;
+
+	struct completion done;
+
+	struct i2c_msg *msg;
+	int pos;
+	int nmsgs;
+	bool error;
+};
+
+/*
+ * This function sets the ALT mode on the I2C pins so that we can use them with
+ * the BSC hardware.
+ *
+ * FIXME: This is a hack. Use pinmux / pinctrl.
+ */
+static void bcm2708_i2c_init_pinmode(int id)
+{
+#define INP_GPIO(g) *(gpio+((g)/10)) &= ~(7<<(((g)%10)*3))
+#define SET_GPIO_ALT(g,a) *(gpio+(((g)/10))) |= (((a)<=3?(a)+4:(a)==4?3:2)<<(((g)%10)*3))
+
+	int pin;
+	u32 *gpio = ioremap(GPIO_BASE, SZ_16K);
+
+	BUG_ON(id != 0 && id != 1);
+	/* BSC0 is on GPIO 0 & 1, BSC1 is on GPIO 2 & 3 */
+	for (pin = id*2+0; pin <= id*2+1; pin++) {
+		printk("bcm2708_i2c_init_pinmode(%d,%d)\n", id, pin);
+		INP_GPIO(pin);		/* set mode to GPIO input first */
+		SET_GPIO_ALT(pin, 0);	/* set mode to ALT 0 */
+	}
+
+	iounmap(gpio);
+
+#undef INP_GPIO
+#undef SET_GPIO_ALT
+}
+
+static inline u32 bcm2708_rd(struct bcm2708_i2c *bi, unsigned reg)
+{
+	return readl(bi->base + reg);
+}
+
+static inline void bcm2708_wr(struct bcm2708_i2c *bi, unsigned reg, u32 val)
+{
+	writel(val, bi->base + reg);
+}
+
+static inline void bcm2708_bsc_reset(struct bcm2708_i2c *bi)
+{
+	bcm2708_wr(bi, BSC_C, 0);
+	bcm2708_wr(bi, BSC_S, BSC_S_CLKT | BSC_S_ERR | BSC_S_DONE);
+}
+
+static inline void bcm2708_bsc_fifo_drain(struct bcm2708_i2c *bi)
+{
+	while ((bcm2708_rd(bi, BSC_S) & BSC_S_RXD) && (bi->pos < bi->msg->len))
+		bi->msg->buf[bi->pos++] = bcm2708_rd(bi, BSC_FIFO);
+}
+
+static inline void bcm2708_bsc_fifo_fill(struct bcm2708_i2c *bi)
+{
+	while ((bcm2708_rd(bi, BSC_S) & BSC_S_TXD) && (bi->pos < bi->msg->len))
+		bcm2708_wr(bi, BSC_FIFO, bi->msg->buf[bi->pos++]);
+}
+
+static inline int bcm2708_bsc_setup(struct bcm2708_i2c *bi)
+{
+	u32 cdiv, s;
+	u32 c = BSC_C_I2CEN | BSC_C_INTD | BSC_C_ST | BSC_C_CLEAR_1;
+	int wait_loops = I2C_WAIT_LOOP_COUNT;
+
+	/* Can't call clk_get_rate as it locks a mutex and here we are spinlocked.
+	 * Use the value that we cached in the probe.
+	 */
+	cdiv = bi->cdiv;
+
+	if (bi->msg->flags & I2C_M_RD)
+		c |= BSC_C_INTR | BSC_C_READ;
+	else
+		c |= BSC_C_INTT;
+
+	bcm2708_wr(bi, BSC_DIV, cdiv);
+	bcm2708_wr(bi, BSC_A, bi->msg->addr);
+	bcm2708_wr(bi, BSC_DLEN, bi->msg->len);
+	if (combined)
+	{
+		/* Do the next two messages meet combined transaction criteria?
+		   - Current message is a write, next message is a read
+		   - Both messages to same slave address
+		   - Write message can fit inside FIFO (16 bytes or less) */
+		if ( (bi->nmsgs > 1) &&
+			!(bi->msg[0].flags & I2C_M_RD) && (bi->msg[1].flags & I2C_M_RD) &&
+			 (bi->msg[0].addr == bi->msg[1].addr) && (bi->msg[0].len <= 16)) {
+			/* Fill FIFO with entire write message (16 byte FIFO) */
+			while (bi->pos < bi->msg->len) {
+				bcm2708_wr(bi, BSC_FIFO, bi->msg->buf[bi->pos++]);
+			}
+			/* Start write transfer (no interrupts, don't clear FIFO) */
+			bcm2708_wr(bi, BSC_C, BSC_C_I2CEN | BSC_C_ST);
+
+			/* poll for transfer start bit (should only take 1-20 polls) */
+			do {
+				s = bcm2708_rd(bi, BSC_S);
+			} while (!(s & (BSC_S_TA | BSC_S_ERR | BSC_S_CLKT | BSC_S_DONE)) && --wait_loops >= 0);
+
+			/* did we time out or some error occured? */
+			if (wait_loops < 0 || (s & (BSC_S_ERR | BSC_S_CLKT))) {
+				return -1;
+			}
+
+			/* Send next read message before the write transfer finishes. */
+			bi->nmsgs--;
+			bi->msg++;
+			bi->pos = 0;
+			bcm2708_wr(bi, BSC_DLEN, bi->msg->len);
+			c = BSC_C_I2CEN | BSC_C_INTD | BSC_C_INTR | BSC_C_ST | BSC_C_READ;
+		}
+	}
+	bcm2708_wr(bi, BSC_C, c);
+
+	return 0;
+}
+
+static irqreturn_t bcm2708_i2c_interrupt(int irq, void *dev_id)
+{
+	struct bcm2708_i2c *bi = dev_id;
+	bool handled = true;
+	u32 s;
+	int ret;
+
+	spin_lock(&bi->lock);
+
+	/* we may see camera interrupts on the "other" I2C channel
+		   Just return if we've not sent anything */
+	if (!bi->nmsgs || !bi->msg) {
+		goto early_exit;
+	}
+
+	s = bcm2708_rd(bi, BSC_S);
+
+	if (s & (BSC_S_CLKT | BSC_S_ERR)) {
+		bcm2708_bsc_reset(bi);
+		bi->error = true;
+
+		bi->msg = 0; /* to inform the that all work is done */
+		bi->nmsgs = 0;
+		/* wake up our bh */
+		complete(&bi->done);
+	} else if (s & BSC_S_DONE) {
+		bi->nmsgs--;
+
+		if (bi->msg->flags & I2C_M_RD) {
+			bcm2708_bsc_fifo_drain(bi);
+		}
+
+		bcm2708_bsc_reset(bi);
+
+		if (bi->nmsgs) {
+			/* advance to next message */
+			bi->msg++;
+			bi->pos = 0;
+			ret = bcm2708_bsc_setup(bi);
+			if (ret < 0) {
+				bcm2708_bsc_reset(bi);
+				bi->error = true;
+				bi->msg = 0; /* to inform the that all work is done */
+				bi->nmsgs = 0;
+				/* wake up our bh */
+				complete(&bi->done);
+				goto early_exit;
+			}
+		} else {
+			bi->msg = 0; /* to inform the that all work is done */
+			bi->nmsgs = 0;
+			/* wake up our bh */
+			complete(&bi->done);
+		}
+	} else if (s & BSC_S_TXW) {
+		bcm2708_bsc_fifo_fill(bi);
+	} else if (s & BSC_S_RXR) {
+		bcm2708_bsc_fifo_drain(bi);
+	} else {
+		handled = false;
+	}
+
+early_exit:
+	spin_unlock(&bi->lock);
+
+	return handled ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static int bcm2708_i2c_master_xfer(struct i2c_adapter *adap,
+	struct i2c_msg *msgs, int num)
+{
+	struct bcm2708_i2c *bi = adap->algo_data;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&bi->lock, flags);
+
+	reinit_completion(&bi->done);
+	bi->msg = msgs;
+	bi->pos = 0;
+	bi->nmsgs = num;
+	bi->error = false;
+
+	ret = bcm2708_bsc_setup(bi);
+
+	spin_unlock_irqrestore(&bi->lock, flags);
+
+	/* check the result of the setup */
+	if (ret < 0)
+	{
+		dev_err(&adap->dev, "transfer setup timed out\n");
+		goto error_timeout;
+	}
+
+	ret = wait_for_completion_timeout(&bi->done, msecs_to_jiffies(I2C_TIMEOUT_MS));
+	if (ret == 0) {
+		dev_err(&adap->dev, "transfer timed out\n");
+		goto error_timeout;
+	}
+
+	ret = bi->error ? -EIO : num;
+	return ret;
+
+error_timeout:
+	spin_lock_irqsave(&bi->lock, flags);
+	bcm2708_bsc_reset(bi);
+	bi->msg = 0; /* to inform the interrupt handler that there's nothing else to be done */
+	bi->nmsgs = 0;
+	spin_unlock_irqrestore(&bi->lock, flags);
+	return -ETIMEDOUT;
+}
+
+static u32 bcm2708_i2c_functionality(struct i2c_adapter *adap)
+{
+	return I2C_FUNC_I2C | /*I2C_FUNC_10BIT_ADDR |*/ I2C_FUNC_SMBUS_EMUL;
+}
+
+static struct i2c_algorithm bcm2708_i2c_algorithm = {
+	.master_xfer = bcm2708_i2c_master_xfer,
+	.functionality = bcm2708_i2c_functionality,
+};
+
+static int bcm2708_i2c_probe(struct platform_device *pdev)
+{
+	struct resource *regs;
+	int irq, err = -ENOMEM;
+	struct clk *clk;
+	struct bcm2708_i2c *bi;
+	struct i2c_adapter *adap;
+	unsigned long bus_hz;
+	u32 cdiv;
+
+	if (pdev->dev.of_node) {
+		u32 bus_clk_rate;
+		pdev->id = of_alias_get_id(pdev->dev.of_node, "i2c");
+		if (pdev->id < 0) {
+			dev_err(&pdev->dev, "alias is missing\n");
+			return -EINVAL;
+		}
+		if (!of_property_read_u32(pdev->dev.of_node,
+					"clock-frequency", &bus_clk_rate))
+			baudrate = bus_clk_rate;
+		else
+			dev_warn(&pdev->dev,
+				"Could not read clock-frequency property\n");
+	}
+
+	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!regs) {
+		dev_err(&pdev->dev, "could not get IO memory\n");
+		return -ENXIO;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		dev_err(&pdev->dev, "could not get IRQ\n");
+		return irq;
+	}
+
+	clk = clk_get(&pdev->dev, NULL);
+	if (IS_ERR(clk)) {
+		dev_err(&pdev->dev, "could not find clk: %ld\n", PTR_ERR(clk));
+		return PTR_ERR(clk);
+	}
+
+	err = clk_prepare_enable(clk);
+	if (err) {
+		dev_err(&pdev->dev, "could not enable clk: %d\n", err);
+		goto out_clk_put;
+	}
+
+	bcm2708_i2c_init_pinmode(pdev->id);
+
+	bi = kzalloc(sizeof(*bi), GFP_KERNEL);
+	if (!bi)
+		goto out_clk_disable;
+
+	platform_set_drvdata(pdev, bi);
+
+	adap = &bi->adapter;
+	adap->class = I2C_CLASS_HWMON | I2C_CLASS_DDC;
+	adap->algo = &bcm2708_i2c_algorithm;
+	adap->algo_data = bi;
+	adap->dev.parent = &pdev->dev;
+	adap->nr = pdev->id;
+	strlcpy(adap->name, dev_name(&pdev->dev), sizeof(adap->name));
+	adap->dev.of_node = pdev->dev.of_node;
+
+	switch (pdev->id) {
+	case 0:
+		adap->class = I2C_CLASS_HWMON;
+		break;
+	case 1:
+		adap->class = I2C_CLASS_DDC;
+		break;
+	default:
+		dev_err(&pdev->dev, "can only bind to BSC 0 or 1\n");
+		err = -ENXIO;
+		goto out_free_bi;
+	}
+
+	spin_lock_init(&bi->lock);
+	init_completion(&bi->done);
+
+	bi->base = ioremap(regs->start, resource_size(regs));
+	if (!bi->base) {
+		dev_err(&pdev->dev, "could not remap memory\n");
+		goto out_free_bi;
+	}
+
+	bi->irq = irq;
+	bi->clk = clk;
+
+	err = request_irq(irq, bcm2708_i2c_interrupt, IRQF_SHARED,
+			dev_name(&pdev->dev), bi);
+	if (err) {
+		dev_err(&pdev->dev, "could not request IRQ: %d\n", err);
+		goto out_iounmap;
+	}
+
+	bcm2708_bsc_reset(bi);
+
+	err = i2c_add_numbered_adapter(adap);
+	if (err < 0) {
+		dev_err(&pdev->dev, "could not add I2C adapter: %d\n", err);
+		goto out_free_irq;
+	}
+
+	bus_hz = clk_get_rate(bi->clk);
+	cdiv = bus_hz / baudrate;
+	if (cdiv > 0xffff) {
+		cdiv = 0xffff;
+		baudrate = bus_hz / cdiv;
+	}
+	bi->cdiv = cdiv;
+
+	dev_info(&pdev->dev, "BSC%d Controller at 0x%08lx (irq %d) (baudrate %d)\n",
+		pdev->id, (unsigned long)regs->start, irq, baudrate);
+
+	return 0;
+
+out_free_irq:
+	free_irq(bi->irq, bi);
+out_iounmap:
+	iounmap(bi->base);
+out_free_bi:
+	kfree(bi);
+out_clk_disable:
+	clk_disable_unprepare(clk);
+out_clk_put:
+	clk_put(clk);
+	return err;
+}
+
+static int bcm2708_i2c_remove(struct platform_device *pdev)
+{
+	struct bcm2708_i2c *bi = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+
+	i2c_del_adapter(&bi->adapter);
+	free_irq(bi->irq, bi);
+	iounmap(bi->base);
+	clk_disable_unprepare(bi->clk);
+	clk_put(bi->clk);
+	kfree(bi);
+
+	return 0;
+}
+
+static const struct of_device_id bcm2708_i2c_of_match[] = {
+        { .compatible = "brcm,bcm2708-i2c" },
+        {},
+};
+MODULE_DEVICE_TABLE(of, bcm2708_i2c_of_match);
+
+static struct platform_driver bcm2708_i2c_driver = {
+	.driver		= {
+		.name	= DRV_NAME,
+		.owner	= THIS_MODULE,
+		.of_match_table = bcm2708_i2c_of_match,
+	},
+	.probe		= bcm2708_i2c_probe,
+	.remove		= bcm2708_i2c_remove,
+};
+
+// module_platform_driver(bcm2708_i2c_driver);
+
+
+static int __init bcm2708_i2c_init(void)
+{
+	return platform_driver_register(&bcm2708_i2c_driver);
+}
+
+static void __exit bcm2708_i2c_exit(void)
+{
+	platform_driver_unregister(&bcm2708_i2c_driver);
+}
+
+module_init(bcm2708_i2c_init);
+module_exit(bcm2708_i2c_exit);
+
+
+
+MODULE_DESCRIPTION("BSC controller driver for Broadcom BCM2708");
+MODULE_AUTHOR("Chris Boot <bootc@bootc.net>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
diff -Nur linux-3.18.10/drivers/i2c/busses/Kconfig linux-rpi/drivers/i2c/busses/Kconfig
--- linux-3.18.10/drivers/i2c/busses/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/i2c/busses/Kconfig	2015-03-26 11:46:50.140234341 +0100
@@ -361,7 +361,7 @@
 
 config I2C_BCM2835
 	tristate "Broadcom BCM2835 I2C controller"
-	depends on ARCH_BCM2835
+	depends on ARCH_BCM2835 || ARCH_BCM2708 || ARCH_BCM2709
 	help
 	  If you say yes to this option, support will be included for the
 	  BCM2835 I2C controller.
@@ -371,6 +371,25 @@
 	  This support is also available as a module.  If so, the module
 	  will be called i2c-bcm2835.
 
+config I2C_BCM2708
+	tristate "BCM2708 BSC"
+	depends on MACH_BCM2708 || MACH_BCM2709
+	help
+	  Enabling this option will add BSC (Broadcom Serial Controller)
+	  support for the BCM2708. BSC is a Broadcom proprietary bus compatible
+	  with I2C/TWI/SMBus.
+
+config I2C_BCM2708_BAUDRATE
+	prompt "BCM2708 I2C baudrate"
+	depends on I2C_BCM2708
+	int
+	default 100000
+	help
+	  Set the I2C baudrate. This will alter the default value. A
+	  different baudrate can be set by using a module parameter as well. If
+	  no parameter is provided when loading, this is the value that will be
+	  used.
+
 config I2C_BCM_KONA
 	tristate "BCM Kona I2C adapter"
 	depends on ARCH_BCM_MOBILE
diff -Nur linux-3.18.10/drivers/i2c/busses/Makefile linux-rpi/drivers/i2c/busses/Makefile
--- linux-3.18.10/drivers/i2c/busses/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/i2c/busses/Makefile	2015-03-26 11:46:50.140234341 +0100
@@ -33,6 +33,7 @@
 obj-$(CONFIG_I2C_AU1550)	+= i2c-au1550.o
 obj-$(CONFIG_I2C_AXXIA)		+= i2c-axxia.o
 obj-$(CONFIG_I2C_BCM2835)	+= i2c-bcm2835.o
+obj-$(CONFIG_I2C_BCM2708)	+= i2c-bcm2708.o
 obj-$(CONFIG_I2C_BLACKFIN_TWI)	+= i2c-bfin-twi.o
 obj-$(CONFIG_I2C_CADENCE)	+= i2c-cadence.o
 obj-$(CONFIG_I2C_CBUS_GPIO)	+= i2c-cbus-gpio.o
diff -Nur linux-3.18.10/drivers/leds/trigger/Kconfig linux-rpi/drivers/leds/trigger/Kconfig
--- linux-3.18.10/drivers/leds/trigger/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/leds/trigger/Kconfig	2015-03-26 11:46:50.276234466 +0100
@@ -108,4 +108,11 @@
 	  This enables direct flash/torch on/off by the driver, kernel space.
 	  If unsure, say Y.
 
+config LEDS_TRIGGER_INPUT
+	tristate "LED Input Trigger"
+	depends on LEDS_TRIGGERS
+	help
+	  This allows the GPIOs assigned to be LEDs to be initialised to inputs.
+	  If unsure, say Y.
+
 endif # LEDS_TRIGGERS
diff -Nur linux-3.18.10/drivers/leds/trigger/ledtrig-input.c linux-rpi/drivers/leds/trigger/ledtrig-input.c
--- linux-3.18.10/drivers/leds/trigger/ledtrig-input.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/leds/trigger/ledtrig-input.c	2015-03-26 11:46:50.276234466 +0100
@@ -0,0 +1,65 @@
+/*
+ * Set LED GPIO to Input "Trigger"
+ *
+ * Copyright 2015 Phil Elwell <phil@raspberrypi.org>
+ *
+ * Based on Nick Forbes's ledtrig-default-on.c.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include "../leds.h"
+
+/* This is a hack to get at the private 'gpio' member */
+
+struct gpio_led_data {
+	struct led_classdev cdev;
+	unsigned gpio;
+};
+
+static void input_trig_activate(struct led_classdev *led_cdev)
+{
+	struct gpio_led_data *led_dat =
+		container_of(led_cdev, struct gpio_led_data, cdev);
+	if (gpio_is_valid(led_dat->gpio))
+		gpio_direction_input(led_dat->gpio);
+}
+
+static void input_trig_deactivate(struct led_classdev *led_cdev)
+{
+	struct gpio_led_data *led_dat =
+		container_of(led_cdev, struct gpio_led_data, cdev);
+	if (gpio_is_valid(led_dat->gpio))
+		gpio_direction_output(led_dat->gpio, 0);
+}
+
+static struct led_trigger input_led_trigger = {
+	.name     = "input",
+	.activate = input_trig_activate,
+	.deactivate = input_trig_deactivate,
+};
+
+static int __init input_trig_init(void)
+{
+	return led_trigger_register(&input_led_trigger);
+}
+
+static void __exit input_trig_exit(void)
+{
+	led_trigger_unregister(&input_led_trigger);
+}
+
+module_init(input_trig_init);
+module_exit(input_trig_exit);
+
+MODULE_AUTHOR("Phil Elwell <phil@raspberrypi.org>");
+MODULE_DESCRIPTION("Set LED GPIO to Input \"trigger\"");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/leds/trigger/Makefile linux-rpi/drivers/leds/trigger/Makefile
--- linux-3.18.10/drivers/leds/trigger/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/leds/trigger/Makefile	2015-03-26 11:46:50.276234466 +0100
@@ -8,3 +8,4 @@
 obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON)	+= ledtrig-default-on.o
 obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT)	+= ledtrig-transient.o
 obj-$(CONFIG_LEDS_TRIGGER_CAMERA)	+= ledtrig-camera.o
+obj-$(CONFIG_LEDS_TRIGGER_INPUT)	+= ledtrig-input.o
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/bcm2835-camera.c linux-rpi/drivers/media/platform/bcm2835/bcm2835-camera.c
--- linux-3.18.10/drivers/media/platform/bcm2835/bcm2835-camera.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/bcm2835-camera.c	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,1828 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <media/videobuf2-vmalloc.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-common.h>
+#include <linux/delay.h>
+
+#include "mmal-common.h"
+#include "mmal-encodings.h"
+#include "mmal-vchiq.h"
+#include "mmal-msg.h"
+#include "mmal-parameters.h"
+#include "bcm2835-camera.h"
+
+#define BM2835_MMAL_VERSION "0.0.2"
+#define BM2835_MMAL_MODULE_NAME "bcm2835-v4l2"
+#define MIN_WIDTH 16
+#define MIN_HEIGHT 16
+#define MAX_WIDTH 2592
+#define MAX_HEIGHT 1944
+#define MIN_BUFFER_SIZE (80*1024)
+
+#define MAX_VIDEO_MODE_WIDTH 1280
+#define MAX_VIDEO_MODE_HEIGHT 720
+
+MODULE_DESCRIPTION("Broadcom 2835 MMAL video capture");
+MODULE_AUTHOR("Vincent Sanders");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(BM2835_MMAL_VERSION);
+
+int bcm2835_v4l2_debug;
+module_param_named(debug, bcm2835_v4l2_debug, int, 0644);
+MODULE_PARM_DESC(bcm2835_v4l2_debug, "Debug level 0-2");
+
+int max_video_width = MAX_VIDEO_MODE_WIDTH;
+int max_video_height = MAX_VIDEO_MODE_HEIGHT;
+module_param(max_video_width, int, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+MODULE_PARM_DESC(max_video_width, "Threshold for video mode");
+module_param(max_video_height, int, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+MODULE_PARM_DESC(max_video_height, "Threshold for video mode");
+
+/* Gstreamer bug https://bugzilla.gnome.org/show_bug.cgi?id=726521
+ * v4l2src does bad (and actually wrong) things when the vidioc_enum_framesizes
+ * function says type V4L2_FRMSIZE_TYPE_STEPWISE, which we do by default.
+ * It's happier if we just don't say anything at all, when it then
+ * sets up a load of defaults that it thinks might work.
+ * If gst_v4l2src_is_broken is non-zero, then we remove the function from
+ * our function table list (actually switch to an alternate set, but same
+ * result).
+ */
+int gst_v4l2src_is_broken = 0;
+module_param(gst_v4l2src_is_broken, int, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+MODULE_PARM_DESC(gst_v4l2src_is_broken, "If non-zero, enable workaround for Gstreamer");
+
+static struct bm2835_mmal_dev *gdev;	/* global device data */
+
+#define FPS_MIN 1
+#define FPS_MAX 90
+
+/* timeperframe: min/max and default */
+static const struct v4l2_fract
+	tpf_min     = {.numerator = 1,		.denominator = FPS_MAX},
+	tpf_max     = {.numerator = 1,	        .denominator = FPS_MIN},
+	tpf_default = {.numerator = 1000,	.denominator = 30000};
+
+/* video formats */
+static struct mmal_fmt formats[] = {
+	{
+	 .name = "4:2:0, packed YUV",
+	 .fourcc = V4L2_PIX_FMT_YUV420,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_I420,
+	 .depth = 12,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "4:2:2, packed, YUYV",
+	 .fourcc = V4L2_PIX_FMT_YUYV,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_YUYV,
+	 .depth = 16,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "RGB24 (LE)",
+	 .fourcc = V4L2_PIX_FMT_RGB24,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_BGR24,
+	 .depth = 24,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "JPEG",
+	 .fourcc = V4L2_PIX_FMT_JPEG,
+	 .flags = V4L2_FMT_FLAG_COMPRESSED,
+	 .mmal = MMAL_ENCODING_JPEG,
+	 .depth = 8,
+	 .mmal_component = MMAL_COMPONENT_IMAGE_ENCODE,
+	 },
+	{
+	 .name = "H264",
+	 .fourcc = V4L2_PIX_FMT_H264,
+	 .flags = V4L2_FMT_FLAG_COMPRESSED,
+	 .mmal = MMAL_ENCODING_H264,
+	 .depth = 8,
+	 .mmal_component = MMAL_COMPONENT_VIDEO_ENCODE,
+	 },
+	{
+	 .name = "MJPEG",
+	 .fourcc = V4L2_PIX_FMT_MJPEG,
+	 .flags = V4L2_FMT_FLAG_COMPRESSED,
+	 .mmal = MMAL_ENCODING_MJPEG,
+	 .depth = 8,
+	 .mmal_component = MMAL_COMPONENT_VIDEO_ENCODE,
+	 },
+	{
+	 .name = "4:2:2, packed, YVYU",
+	 .fourcc = V4L2_PIX_FMT_YVYU,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_YVYU,
+	 .depth = 16,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "4:2:2, packed, VYUY",
+	 .fourcc = V4L2_PIX_FMT_VYUY,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_VYUY,
+	 .depth = 16,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "4:2:2, packed, UYVY",
+	 .fourcc = V4L2_PIX_FMT_UYVY,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_UYVY,
+	 .depth = 16,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "4:2:0, packed, NV12",
+	 .fourcc = V4L2_PIX_FMT_NV12,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_NV12,
+	 .depth = 12,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "RGB24 (BE)",
+	 .fourcc = V4L2_PIX_FMT_BGR24,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_RGB24,
+	 .depth = 24,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "4:2:0, packed YVU",
+	 .fourcc = V4L2_PIX_FMT_YVU420,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_YV12,
+	 .depth = 12,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "4:2:0, packed, NV21",
+	 .fourcc = V4L2_PIX_FMT_NV21,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_NV21,
+	 .depth = 12,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+	{
+	 .name = "RGB32 (BE)",
+	 .fourcc = V4L2_PIX_FMT_BGR32,
+	 .flags = 0,
+	 .mmal = MMAL_ENCODING_BGRA,
+	 .depth = 32,
+	 .mmal_component = MMAL_COMPONENT_CAMERA,
+	 },
+};
+
+static struct mmal_fmt *get_format(struct v4l2_format *f)
+{
+	struct mmal_fmt *fmt;
+	unsigned int k;
+
+	for (k = 0; k < ARRAY_SIZE(formats); k++) {
+		fmt = &formats[k];
+		if (fmt->fourcc == f->fmt.pix.pixelformat)
+			break;
+	}
+
+	if (k == ARRAY_SIZE(formats))
+		return NULL;
+
+	return &formats[k];
+}
+
+/* ------------------------------------------------------------------
+	Videobuf queue operations
+   ------------------------------------------------------------------*/
+
+static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
+		       unsigned int *nbuffers, unsigned int *nplanes,
+		       unsigned int sizes[], void *alloc_ctxs[])
+{
+	struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq);
+	unsigned long size;
+
+	/* refuse queue setup if port is not configured */
+	if (dev->capture.port == NULL) {
+		v4l2_err(&dev->v4l2_dev,
+			 "%s: capture port not configured\n", __func__);
+		return -EINVAL;
+	}
+
+	size = dev->capture.port->current_buffer.size;
+	if (size == 0) {
+		v4l2_err(&dev->v4l2_dev,
+			 "%s: capture port buffer size is zero\n", __func__);
+		return -EINVAL;
+	}
+
+	if (*nbuffers < (dev->capture.port->current_buffer.num + 2))
+		*nbuffers = (dev->capture.port->current_buffer.num + 2);
+
+	*nplanes = 1;
+
+	sizes[0] = size;
+
+	/*
+	 * videobuf2-vmalloc allocator is context-less so no need to set
+	 * alloc_ctxs array.
+	 */
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n",
+		 __func__, dev);
+
+	return 0;
+}
+
+static int buffer_prepare(struct vb2_buffer *vb)
+{
+	struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
+	unsigned long size;
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n",
+		 __func__, dev);
+
+	BUG_ON(dev->capture.port == NULL);
+	BUG_ON(dev->capture.fmt == NULL);
+
+	size = dev->capture.stride * dev->capture.height;
+	if (vb2_plane_size(vb, 0) < size) {
+		v4l2_err(&dev->v4l2_dev,
+			 "%s data will not fit into plane (%lu < %lu)\n",
+			 __func__, vb2_plane_size(vb, 0), size);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static inline bool is_capturing(struct bm2835_mmal_dev *dev)
+{
+	return dev->capture.camera_port ==
+	    &dev->
+	    component[MMAL_COMPONENT_CAMERA]->output[MMAL_CAMERA_PORT_CAPTURE];
+}
+
+static void buffer_cb(struct vchiq_mmal_instance *instance,
+		      struct vchiq_mmal_port *port,
+		      int status,
+		      struct mmal_buffer *buf,
+		      unsigned long length, u32 mmal_flags, s64 dts, s64 pts)
+{
+	struct bm2835_mmal_dev *dev = port->cb_ctx;
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		 "%s: status:%d, buf:%p, length:%lu, flags %u, pts %lld\n",
+		 __func__, status, buf, length, mmal_flags, pts);
+
+	if (status != 0) {
+		/* error in transfer */
+		if (buf != NULL) {
+			/* there was a buffer with the error so return it */
+			vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
+		}
+		return;
+	} else if (length == 0) {
+		/* stream ended */
+		if (buf != NULL) {
+			/* this should only ever happen if the port is
+			 * disabled and there are buffers still queued
+			 */
+			vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
+			pr_debug("Empty buffer");
+		} else if (dev->capture.frame_count) {
+			/* grab another frame */
+			if (is_capturing(dev)) {
+				pr_debug("Grab another frame");
+				vchiq_mmal_port_parameter_set(
+					instance,
+					dev->capture.
+					camera_port,
+					MMAL_PARAMETER_CAPTURE,
+					&dev->capture.
+					frame_count,
+					sizeof(dev->capture.frame_count));
+			}
+		} else {
+			/* signal frame completion */
+			complete(&dev->capture.frame_cmplt);
+		}
+	} else {
+		if (dev->capture.frame_count) {
+			if (dev->capture.vc_start_timestamp != -1 &&
+			    pts != 0) {
+				s64 runtime_us = pts -
+				    dev->capture.vc_start_timestamp;
+				u32 div = 0;
+				u32 rem = 0;
+
+				div =
+				    div_u64_rem(runtime_us, USEC_PER_SEC, &rem);
+				buf->vb.v4l2_buf.timestamp.tv_sec =
+				    dev->capture.kernel_start_ts.tv_sec - 1 +
+				    div;
+				buf->vb.v4l2_buf.timestamp.tv_usec =
+				    dev->capture.kernel_start_ts.tv_usec + rem;
+
+				if (buf->vb.v4l2_buf.timestamp.tv_usec >=
+				    USEC_PER_SEC) {
+					buf->vb.v4l2_buf.timestamp.tv_sec++;
+					buf->vb.v4l2_buf.timestamp.tv_usec -=
+					    USEC_PER_SEC;
+				}
+				v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+					 "Convert start time %d.%06d and %llu "
+					 "with offset %llu to %d.%06d\n",
+					 (int)dev->capture.kernel_start_ts.
+					 tv_sec,
+					 (int)dev->capture.kernel_start_ts.
+					 tv_usec,
+					 dev->capture.vc_start_timestamp, pts,
+					 (int)buf->vb.v4l2_buf.timestamp.tv_sec,
+					 (int)buf->vb.v4l2_buf.timestamp.
+					 tv_usec);
+			} else {
+				v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
+			}
+
+			vb2_set_plane_payload(&buf->vb, 0, length);
+			vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
+
+			if (mmal_flags & MMAL_BUFFER_HEADER_FLAG_EOS &&
+			    is_capturing(dev)) {
+				v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+					 "Grab another frame as buffer has EOS");
+				vchiq_mmal_port_parameter_set(
+					instance,
+					dev->capture.
+					camera_port,
+					MMAL_PARAMETER_CAPTURE,
+					&dev->capture.
+					frame_count,
+					sizeof(dev->capture.frame_count));
+			}
+		} else {
+			/* signal frame completion */
+			complete(&dev->capture.frame_cmplt);
+		}
+	}
+}
+
+static int enable_camera(struct bm2835_mmal_dev *dev)
+{
+	int ret;
+	if (!dev->camera_use_count) {
+		ret = vchiq_mmal_component_enable(
+				dev->instance,
+				dev->component[MMAL_COMPONENT_CAMERA]);
+		if (ret < 0) {
+			v4l2_err(&dev->v4l2_dev,
+				 "Failed enabling camera, ret %d\n", ret);
+			return -EINVAL;
+		}
+	}
+	dev->camera_use_count++;
+	v4l2_dbg(1, bcm2835_v4l2_debug,
+		 &dev->v4l2_dev, "enabled camera (refcount %d)\n",
+			dev->camera_use_count);
+	return 0;
+}
+
+static int disable_camera(struct bm2835_mmal_dev *dev)
+{
+	int ret;
+	if (!dev->camera_use_count) {
+		v4l2_err(&dev->v4l2_dev,
+			 "Disabled the camera when already disabled\n");
+		return -EINVAL;
+	}
+	dev->camera_use_count--;
+	if (!dev->camera_use_count) {
+		unsigned int i = 0xFFFFFFFF;
+		v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			 "Disabling camera\n");
+		ret =
+		    vchiq_mmal_component_disable(
+				dev->instance,
+				dev->component[MMAL_COMPONENT_CAMERA]);
+		if (ret < 0) {
+			v4l2_err(&dev->v4l2_dev,
+				 "Failed disabling camera, ret %d\n", ret);
+			return -EINVAL;
+		}
+		vchiq_mmal_port_parameter_set(
+			dev->instance,
+			&dev->component[MMAL_COMPONENT_CAMERA]->control,
+			MMAL_PARAMETER_CAMERA_NUM, &i,
+			sizeof(i));
+	}
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		 "Camera refcount now %d\n", dev->camera_use_count);
+	return 0;
+}
+
+static void buffer_queue(struct vb2_buffer *vb)
+{
+	struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
+	struct mmal_buffer *buf = container_of(vb, struct mmal_buffer, vb);
+	int ret;
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		 "%s: dev:%p buf:%p\n", __func__, dev, buf);
+
+	buf->buffer = vb2_plane_vaddr(&buf->vb, 0);
+	buf->buffer_size = vb2_plane_size(&buf->vb, 0);
+
+	ret = vchiq_mmal_submit_buffer(dev->instance, dev->capture.port, buf);
+	if (ret < 0)
+		v4l2_err(&dev->v4l2_dev, "%s: error submitting buffer\n",
+			 __func__);
+}
+
+static int start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+	struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq);
+	int ret;
+	int parameter_size;
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n",
+		 __func__, dev);
+
+	/* ensure a format has actually been set */
+	if (dev->capture.port == NULL)
+		return -EINVAL;
+
+	if (enable_camera(dev) < 0) {
+		v4l2_err(&dev->v4l2_dev, "Failed to enable camera\n");
+		return -EINVAL;
+	}
+
+	/*init_completion(&dev->capture.frame_cmplt); */
+
+	/* enable frame capture */
+	dev->capture.frame_count = 1;
+
+	/* if the preview is not already running, wait for a few frames for AGC
+	 * to settle down.
+	 */
+	if (!dev->component[MMAL_COMPONENT_PREVIEW]->enabled)
+		msleep(300);
+
+	/* enable the connection from camera to encoder (if applicable) */
+	if (dev->capture.camera_port != dev->capture.port
+	    && dev->capture.camera_port) {
+		ret = vchiq_mmal_port_enable(dev->instance,
+					     dev->capture.camera_port, NULL);
+		if (ret) {
+			v4l2_err(&dev->v4l2_dev,
+				 "Failed to enable encode tunnel - error %d\n",
+				 ret);
+			return -1;
+		}
+	}
+
+	/* Get VC timestamp at this point in time */
+	parameter_size = sizeof(dev->capture.vc_start_timestamp);
+	if (vchiq_mmal_port_parameter_get(dev->instance,
+					  dev->capture.camera_port,
+					  MMAL_PARAMETER_SYSTEM_TIME,
+					  &dev->capture.vc_start_timestamp,
+					  &parameter_size)) {
+		v4l2_err(&dev->v4l2_dev,
+			 "Failed to get VC start time - update your VC f/w\n");
+
+		/* Flag to indicate just to rely on kernel timestamps */
+		dev->capture.vc_start_timestamp = -1;
+	} else
+		v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			 "Start time %lld size %d\n",
+			 dev->capture.vc_start_timestamp, parameter_size);
+
+	v4l2_get_timestamp(&dev->capture.kernel_start_ts);
+
+	/* enable the camera port */
+	dev->capture.port->cb_ctx = dev;
+	ret =
+	    vchiq_mmal_port_enable(dev->instance, dev->capture.port, buffer_cb);
+	if (ret) {
+		v4l2_err(&dev->v4l2_dev,
+			"Failed to enable capture port - error %d. "
+			"Disabling camera port again\n", ret);
+
+		vchiq_mmal_port_disable(dev->instance,
+					dev->capture.camera_port);
+		if (disable_camera(dev) < 0) {
+			v4l2_err(&dev->v4l2_dev, "Failed to disable camera\n");
+			return -EINVAL;
+		}
+		return -1;
+	}
+
+	/* capture the first frame */
+	vchiq_mmal_port_parameter_set(dev->instance,
+				      dev->capture.camera_port,
+				      MMAL_PARAMETER_CAPTURE,
+				      &dev->capture.frame_count,
+				      sizeof(dev->capture.frame_count));
+	return 0;
+}
+
+/* abort streaming and wait for last buffer */
+static void stop_streaming(struct vb2_queue *vq)
+{
+	int ret;
+	struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq);
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "%s: dev:%p\n",
+		 __func__, dev);
+
+	init_completion(&dev->capture.frame_cmplt);
+	dev->capture.frame_count = 0;
+
+	/* ensure a format has actually been set */
+	if (dev->capture.port == NULL) {
+		v4l2_err(&dev->v4l2_dev,
+			 "no capture port - stream not started?\n");
+		return;
+	}
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "stopping capturing\n");
+
+	/* stop capturing frames */
+	vchiq_mmal_port_parameter_set(dev->instance,
+				      dev->capture.camera_port,
+				      MMAL_PARAMETER_CAPTURE,
+				      &dev->capture.frame_count,
+				      sizeof(dev->capture.frame_count));
+
+	/* wait for last frame to complete */
+	ret = wait_for_completion_timeout(&dev->capture.frame_cmplt, HZ);
+	if (ret <= 0)
+		v4l2_err(&dev->v4l2_dev,
+			 "error %d waiting for frame completion\n", ret);
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		 "disabling connection\n");
+
+	/* disable the connection from camera to encoder */
+	ret = vchiq_mmal_port_disable(dev->instance, dev->capture.camera_port);
+	if (!ret && dev->capture.camera_port != dev->capture.port) {
+		v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			 "disabling port\n");
+		ret = vchiq_mmal_port_disable(dev->instance, dev->capture.port);
+	} else if (dev->capture.camera_port != dev->capture.port) {
+		v4l2_err(&dev->v4l2_dev, "port_disable failed, error %d\n",
+			 ret);
+	}
+
+	if (disable_camera(dev) < 0)
+		v4l2_err(&dev->v4l2_dev, "Failed to disable camera\n");
+}
+
+static void bm2835_mmal_lock(struct vb2_queue *vq)
+{
+	struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq);
+	mutex_lock(&dev->mutex);
+}
+
+static void bm2835_mmal_unlock(struct vb2_queue *vq)
+{
+	struct bm2835_mmal_dev *dev = vb2_get_drv_priv(vq);
+	mutex_unlock(&dev->mutex);
+}
+
+static struct vb2_ops bm2835_mmal_video_qops = {
+	.queue_setup = queue_setup,
+	.buf_prepare = buffer_prepare,
+	.buf_queue = buffer_queue,
+	.start_streaming = start_streaming,
+	.stop_streaming = stop_streaming,
+	.wait_prepare = bm2835_mmal_unlock,
+	.wait_finish = bm2835_mmal_lock,
+};
+
+/* ------------------------------------------------------------------
+	IOCTL operations
+   ------------------------------------------------------------------*/
+
+/* overlay ioctl */
+static int vidioc_enum_fmt_vid_overlay(struct file *file, void *priv,
+				       struct v4l2_fmtdesc *f)
+{
+	struct mmal_fmt *fmt;
+
+	if (f->index >= ARRAY_SIZE(formats))
+		return -EINVAL;
+
+	fmt = &formats[f->index];
+
+	strlcpy(f->description, fmt->name, sizeof(f->description));
+	f->pixelformat = fmt->fourcc;
+	f->flags = fmt->flags;
+
+	return 0;
+}
+
+static int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
+				    struct v4l2_format *f)
+{
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+
+	f->fmt.win = dev->overlay;
+
+	return 0;
+}
+
+static int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
+				      struct v4l2_format *f)
+{
+	/* Only support one format so get the current one. */
+	vidioc_g_fmt_vid_overlay(file, priv, f);
+
+	/* todo: allow the size and/or offset to be changed. */
+	return 0;
+}
+
+static int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
+				    struct v4l2_format *f)
+{
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+
+	vidioc_try_fmt_vid_overlay(file, priv, f);
+
+	dev->overlay = f->fmt.win;
+
+	/* todo: program the preview port parameters */
+	return 0;
+}
+
+static int vidioc_overlay(struct file *file, void *f, unsigned int on)
+{
+	int ret;
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+	struct vchiq_mmal_port *src;
+	struct vchiq_mmal_port *dst;
+	struct mmal_parameter_displayregion prev_config = {
+		.set = MMAL_DISPLAY_SET_LAYER | MMAL_DISPLAY_SET_ALPHA |
+		    MMAL_DISPLAY_SET_DEST_RECT | MMAL_DISPLAY_SET_FULLSCREEN,
+		.layer = PREVIEW_LAYER,
+		.alpha = 255,
+		.fullscreen = 0,
+		.dest_rect = {
+			      .x = dev->overlay.w.left,
+			      .y = dev->overlay.w.top,
+			      .width = dev->overlay.w.width,
+			      .height = dev->overlay.w.height,
+			      },
+	};
+
+	if ((on && dev->component[MMAL_COMPONENT_PREVIEW]->enabled) ||
+	    (!on && !dev->component[MMAL_COMPONENT_PREVIEW]->enabled))
+		return 0;	/* already in requested state */
+
+	src =
+	    &dev->component[MMAL_COMPONENT_CAMERA]->
+	    output[MMAL_CAMERA_PORT_PREVIEW];
+
+	if (!on) {
+		/* disconnect preview ports and disable component */
+		ret = vchiq_mmal_port_disable(dev->instance, src);
+		if (!ret)
+			ret =
+			    vchiq_mmal_port_connect_tunnel(dev->instance, src,
+							   NULL);
+		if (ret >= 0)
+			ret = vchiq_mmal_component_disable(
+					dev->instance,
+					dev->component[MMAL_COMPONENT_PREVIEW]);
+
+		disable_camera(dev);
+		return ret;
+	}
+
+	/* set preview port format and connect it to output */
+	dst = &dev->component[MMAL_COMPONENT_PREVIEW]->input[0];
+
+	ret = vchiq_mmal_port_set_format(dev->instance, src);
+	if (ret < 0)
+		goto error;
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance, dst,
+					    MMAL_PARAMETER_DISPLAYREGION,
+					    &prev_config, sizeof(prev_config));
+	if (ret < 0)
+		goto error;
+
+	if (enable_camera(dev) < 0)
+		goto error;
+
+	ret = vchiq_mmal_component_enable(
+			dev->instance,
+			dev->component[MMAL_COMPONENT_PREVIEW]);
+	if (ret < 0)
+		goto error;
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, "connecting %p to %p\n",
+		 src, dst);
+	ret = vchiq_mmal_port_connect_tunnel(dev->instance, src, dst);
+	if (!ret)
+		ret = vchiq_mmal_port_enable(dev->instance, src, NULL);
+error:
+	return ret;
+}
+
+static int vidioc_g_fbuf(struct file *file, void *fh,
+			 struct v4l2_framebuffer *a)
+{
+	/* The video overlay must stay within the framebuffer and can't be
+	   positioned independently. */
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+	struct vchiq_mmal_port *preview_port =
+		    &dev->component[MMAL_COMPONENT_CAMERA]->
+		    output[MMAL_CAMERA_PORT_PREVIEW];
+	a->flags = V4L2_FBUF_FLAG_OVERLAY;
+	a->fmt.width = preview_port->es.video.width;
+	a->fmt.height = preview_port->es.video.height;
+	a->fmt.pixelformat = V4L2_PIX_FMT_YUV420;
+	a->fmt.bytesperline = (preview_port->es.video.width * 3)>>1;
+	a->fmt.sizeimage = (preview_port->es.video.width *
+			       preview_port->es.video.height * 3)>>1;
+	a->fmt.colorspace = V4L2_COLORSPACE_SMPTE170M;
+
+	return 0;
+}
+
+/* input ioctls */
+static int vidioc_enum_input(struct file *file, void *priv,
+			     struct v4l2_input *inp)
+{
+	/* only a single camera input */
+	if (inp->index != 0)
+		return -EINVAL;
+
+	inp->type = V4L2_INPUT_TYPE_CAMERA;
+	sprintf(inp->name, "Camera %u", inp->index);
+	return 0;
+}
+
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+	*i = 0;
+	return 0;
+}
+
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+	if (i != 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+/* capture ioctls */
+static int vidioc_querycap(struct file *file, void *priv,
+			   struct v4l2_capability *cap)
+{
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+	u32 major;
+	u32 minor;
+
+	vchiq_mmal_version(dev->instance, &major, &minor);
+
+	strcpy(cap->driver, "bm2835 mmal");
+	snprintf(cap->card, sizeof(cap->card), "mmal service %d.%d",
+		 major, minor);
+
+	snprintf(cap->bus_info, sizeof(cap->bus_info),
+		 "platform:%s", dev->v4l2_dev.name);
+	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OVERLAY |
+	    V4L2_CAP_STREAMING | V4L2_CAP_READWRITE;
+	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+
+	return 0;
+}
+
+static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
+				   struct v4l2_fmtdesc *f)
+{
+	struct mmal_fmt *fmt;
+
+	if (f->index >= ARRAY_SIZE(formats))
+		return -EINVAL;
+
+	fmt = &formats[f->index];
+
+	strlcpy(f->description, fmt->name, sizeof(f->description));
+	f->pixelformat = fmt->fourcc;
+	f->flags = fmt->flags;
+
+	return 0;
+}
+
+static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+
+	f->fmt.pix.width = dev->capture.width;
+	f->fmt.pix.height = dev->capture.height;
+	f->fmt.pix.field = V4L2_FIELD_NONE;
+	f->fmt.pix.pixelformat = dev->capture.fmt->fourcc;
+	f->fmt.pix.bytesperline = dev->capture.stride;
+	f->fmt.pix.sizeimage = dev->capture.buffersize;
+
+	if (dev->capture.fmt->fourcc == V4L2_PIX_FMT_RGB24)
+		f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
+	else if (dev->capture.fmt->fourcc == V4L2_PIX_FMT_JPEG)
+		f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
+	else
+		f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	f->fmt.pix.priv = 0;
+
+	v4l2_dump_pix_format(1, bcm2835_v4l2_debug, &dev->v4l2_dev, &f->fmt.pix,
+			     __func__);
+	return 0;
+}
+
+static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+				  struct v4l2_format *f)
+{
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+	struct mmal_fmt *mfmt;
+
+	mfmt = get_format(f);
+	if (!mfmt) {
+		v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			 "Fourcc format (0x%08x) unknown.\n",
+			 f->fmt.pix.pixelformat);
+		f->fmt.pix.pixelformat = formats[0].fourcc;
+		mfmt = get_format(f);
+	}
+
+	f->fmt.pix.field = V4L2_FIELD_NONE;
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		"Clipping/aligning %dx%d format %08X\n",
+		f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.pixelformat);
+
+	v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, MAX_WIDTH, 1,
+			      &f->fmt.pix.height, MIN_HEIGHT, MAX_HEIGHT, 1, 0);
+	f->fmt.pix.bytesperline = (f->fmt.pix.width * mfmt->depth)>>3;
+
+	/* Image buffer has to be padded to allow for alignment, even though
+	 * we then remove that padding before delivering the buffer.
+	 */
+	f->fmt.pix.sizeimage = ((f->fmt.pix.height+15)&~15) *
+			(((f->fmt.pix.width+31)&~31) * mfmt->depth) >> 3;
+
+	if ((mfmt->flags & V4L2_FMT_FLAG_COMPRESSED) &&
+	    f->fmt.pix.sizeimage < MIN_BUFFER_SIZE)
+		f->fmt.pix.sizeimage = MIN_BUFFER_SIZE;
+
+	if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24)
+		f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
+	else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
+		f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
+	else
+		f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	f->fmt.pix.priv = 0;
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		"Now %dx%d format %08X\n",
+		f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.pixelformat);
+
+	v4l2_dump_pix_format(1, bcm2835_v4l2_debug, &dev->v4l2_dev, &f->fmt.pix,
+			     __func__);
+	return 0;
+}
+
+static int mmal_setup_components(struct bm2835_mmal_dev *dev,
+				 struct v4l2_format *f)
+{
+	int ret;
+	struct vchiq_mmal_port *port = NULL, *camera_port = NULL;
+	struct vchiq_mmal_component *encode_component = NULL;
+	struct mmal_fmt *mfmt = get_format(f);
+
+	BUG_ON(!mfmt);
+
+	if (dev->capture.encode_component) {
+		v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			 "vid_cap - disconnect previous tunnel\n");
+
+		/* Disconnect any previous connection */
+		vchiq_mmal_port_connect_tunnel(dev->instance,
+					       dev->capture.camera_port, NULL);
+		dev->capture.camera_port = NULL;
+		ret = vchiq_mmal_component_disable(dev->instance,
+						   dev->capture.
+						   encode_component);
+		if (ret)
+			v4l2_err(&dev->v4l2_dev,
+				 "Failed to disable encode component %d\n",
+				 ret);
+
+		dev->capture.encode_component = NULL;
+	}
+	/* format dependant port setup */
+	switch (mfmt->mmal_component) {
+	case MMAL_COMPONENT_CAMERA:
+		/* Make a further decision on port based on resolution */
+		if (f->fmt.pix.width <= max_video_width
+		    && f->fmt.pix.height <= max_video_height)
+			camera_port = port =
+			    &dev->component[MMAL_COMPONENT_CAMERA]->
+			    output[MMAL_CAMERA_PORT_VIDEO];
+		else
+			camera_port = port =
+			    &dev->component[MMAL_COMPONENT_CAMERA]->
+			    output[MMAL_CAMERA_PORT_CAPTURE];
+		break;
+	case MMAL_COMPONENT_IMAGE_ENCODE:
+		encode_component = dev->component[MMAL_COMPONENT_IMAGE_ENCODE];
+		port = &dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->output[0];
+		camera_port =
+		    &dev->component[MMAL_COMPONENT_CAMERA]->
+		    output[MMAL_CAMERA_PORT_CAPTURE];
+		break;
+	case MMAL_COMPONENT_VIDEO_ENCODE:
+		encode_component = dev->component[MMAL_COMPONENT_VIDEO_ENCODE];
+		port = &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0];
+		camera_port =
+		    &dev->component[MMAL_COMPONENT_CAMERA]->
+		    output[MMAL_CAMERA_PORT_VIDEO];
+		break;
+	default:
+		break;
+	}
+
+	if (!port)
+		return -EINVAL;
+
+	if (encode_component)
+		camera_port->format.encoding = MMAL_ENCODING_OPAQUE;
+	else
+		camera_port->format.encoding = mfmt->mmal;
+
+	camera_port->format.encoding_variant = 0;
+	camera_port->es.video.width = f->fmt.pix.width;
+	camera_port->es.video.height = f->fmt.pix.height;
+	camera_port->es.video.crop.x = 0;
+	camera_port->es.video.crop.y = 0;
+	camera_port->es.video.crop.width = f->fmt.pix.width;
+	camera_port->es.video.crop.height = f->fmt.pix.height;
+	camera_port->es.video.frame_rate.num = 0;
+	camera_port->es.video.frame_rate.den = 1;
+	camera_port->es.video.color_space = MMAL_COLOR_SPACE_JPEG_JFIF;
+
+	ret = vchiq_mmal_port_set_format(dev->instance, camera_port);
+
+	if (!ret
+	    && camera_port ==
+	    &dev->component[MMAL_COMPONENT_CAMERA]->
+	    output[MMAL_CAMERA_PORT_VIDEO]) {
+		bool overlay_enabled =
+		    !!dev->component[MMAL_COMPONENT_PREVIEW]->enabled;
+		struct vchiq_mmal_port *preview_port =
+		    &dev->component[MMAL_COMPONENT_CAMERA]->
+		    output[MMAL_CAMERA_PORT_PREVIEW];
+		/* Preview and encode ports need to match on resolution */
+		if (overlay_enabled) {
+			/* Need to disable the overlay before we can update
+			 * the resolution
+			 */
+			ret =
+			    vchiq_mmal_port_disable(dev->instance,
+						    preview_port);
+			if (!ret)
+				ret =
+				    vchiq_mmal_port_connect_tunnel(
+						dev->instance,
+						preview_port,
+						NULL);
+		}
+		preview_port->es.video.width = f->fmt.pix.width;
+		preview_port->es.video.height = f->fmt.pix.height;
+		preview_port->es.video.crop.x = 0;
+		preview_port->es.video.crop.y = 0;
+		preview_port->es.video.crop.width = f->fmt.pix.width;
+		preview_port->es.video.crop.height = f->fmt.pix.height;
+		preview_port->es.video.frame_rate.num =
+					  dev->capture.timeperframe.denominator;
+		preview_port->es.video.frame_rate.den =
+					  dev->capture.timeperframe.numerator;
+		ret = vchiq_mmal_port_set_format(dev->instance, preview_port);
+		if (overlay_enabled) {
+			ret = vchiq_mmal_port_connect_tunnel(
+				dev->instance,
+				preview_port,
+				&dev->component[MMAL_COMPONENT_PREVIEW]->input[0]);
+			if (!ret)
+				ret = vchiq_mmal_port_enable(dev->instance,
+							     preview_port,
+							     NULL);
+		}
+	}
+
+	if (ret) {
+		v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			 "%s failed to set format %dx%d %08X\n", __func__,
+			 f->fmt.pix.width, f->fmt.pix.height,
+			 f->fmt.pix.pixelformat);
+		/* ensure capture is not going to be tried */
+		dev->capture.port = NULL;
+	} else {
+		if (encode_component) {
+			v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+				 "vid_cap - set up encode comp\n");
+
+			/* configure buffering */
+			camera_port->current_buffer.size =
+			    camera_port->recommended_buffer.size;
+			camera_port->current_buffer.num =
+			    camera_port->recommended_buffer.num;
+
+			ret =
+			    vchiq_mmal_port_connect_tunnel(
+					dev->instance,
+					camera_port,
+					&encode_component->input[0]);
+			if (ret) {
+				v4l2_dbg(1, bcm2835_v4l2_debug,
+					 &dev->v4l2_dev,
+					 "%s failed to create connection\n",
+					 __func__);
+				/* ensure capture is not going to be tried */
+				dev->capture.port = NULL;
+			} else {
+				port->es.video.width = f->fmt.pix.width;
+				port->es.video.height = f->fmt.pix.height;
+				port->es.video.crop.x = 0;
+				port->es.video.crop.y = 0;
+				port->es.video.crop.width = f->fmt.pix.width;
+				port->es.video.crop.height = f->fmt.pix.height;
+				port->es.video.frame_rate.num =
+					  dev->capture.timeperframe.denominator;
+				port->es.video.frame_rate.den =
+					  dev->capture.timeperframe.numerator;
+
+				port->format.encoding = mfmt->mmal;
+				port->format.encoding_variant = 0;
+				/* Set any encoding specific parameters */
+				switch (mfmt->mmal_component) {
+				case MMAL_COMPONENT_VIDEO_ENCODE:
+					port->format.bitrate =
+					    dev->capture.encode_bitrate;
+					break;
+				case MMAL_COMPONENT_IMAGE_ENCODE:
+					/* Could set EXIF parameters here */
+					break;
+				default:
+					break;
+				}
+				ret = vchiq_mmal_port_set_format(dev->instance,
+								 port);
+				if (ret)
+					v4l2_dbg(1, bcm2835_v4l2_debug,
+						 &dev->v4l2_dev,
+						 "%s failed to set format %dx%d fmt %08X\n",
+						 __func__,
+						 f->fmt.pix.width,
+						 f->fmt.pix.height,
+						 f->fmt.pix.pixelformat
+						 );
+			}
+
+			if (!ret) {
+				ret = vchiq_mmal_component_enable(
+						dev->instance,
+						encode_component);
+				if (ret) {
+					v4l2_dbg(1, bcm2835_v4l2_debug,
+					   &dev->v4l2_dev,
+					   "%s Failed to enable encode components\n",
+					   __func__);
+				}
+			}
+			if (!ret) {
+				/* configure buffering */
+				port->current_buffer.num = 1;
+				port->current_buffer.size =
+				    f->fmt.pix.sizeimage;
+				if (port->format.encoding ==
+				    MMAL_ENCODING_JPEG) {
+					v4l2_dbg(1, bcm2835_v4l2_debug,
+					    &dev->v4l2_dev,
+					    "JPG - buf size now %d was %d\n",
+					    f->fmt.pix.sizeimage,
+					    port->current_buffer.size);
+					port->current_buffer.size =
+					    (f->fmt.pix.sizeimage <
+					     (100 << 10))
+					    ? (100 << 10) : f->fmt.pix.
+					    sizeimage;
+				}
+				v4l2_dbg(1, bcm2835_v4l2_debug,
+					 &dev->v4l2_dev,
+					 "vid_cap - cur_buf.size set to %d\n",
+					 f->fmt.pix.sizeimage);
+				port->current_buffer.alignment = 0;
+			}
+		} else {
+			/* configure buffering */
+			camera_port->current_buffer.num = 1;
+			camera_port->current_buffer.size = f->fmt.pix.sizeimage;
+			camera_port->current_buffer.alignment = 0;
+		}
+
+		if (!ret) {
+			dev->capture.fmt = mfmt;
+			dev->capture.stride = f->fmt.pix.bytesperline;
+			dev->capture.width = camera_port->es.video.crop.width;
+			dev->capture.height = camera_port->es.video.crop.height;
+			dev->capture.buffersize = port->current_buffer.size;
+
+			/* select port for capture */
+			dev->capture.port = port;
+			dev->capture.camera_port = camera_port;
+			dev->capture.encode_component = encode_component;
+			v4l2_dbg(1, bcm2835_v4l2_debug,
+				 &dev->v4l2_dev,
+				"Set dev->capture.fmt %08X, %dx%d, stride %d, size %d",
+				port->format.encoding,
+				dev->capture.width, dev->capture.height,
+				dev->capture.stride, dev->capture.buffersize);
+		}
+	}
+
+	/* todo: Need to convert the vchiq/mmal error into a v4l2 error. */
+	return ret;
+}
+
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	int ret;
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+	struct mmal_fmt *mfmt;
+
+	/* try the format to set valid parameters */
+	ret = vidioc_try_fmt_vid_cap(file, priv, f);
+	if (ret) {
+		v4l2_err(&dev->v4l2_dev,
+			 "vid_cap - vidioc_try_fmt_vid_cap failed\n");
+		return ret;
+	}
+
+	/* if a capture is running refuse to set format */
+	if (vb2_is_busy(&dev->capture.vb_vidq)) {
+		v4l2_info(&dev->v4l2_dev, "%s device busy\n", __func__);
+		return -EBUSY;
+	}
+
+	/* If the format is unsupported v4l2 says we should switch to
+	 * a supported one and not return an error. */
+	mfmt = get_format(f);
+	if (!mfmt) {
+		v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			 "Fourcc format (0x%08x) unknown.\n",
+			 f->fmt.pix.pixelformat);
+		f->fmt.pix.pixelformat = formats[0].fourcc;
+		mfmt = get_format(f);
+	}
+
+	ret = mmal_setup_components(dev, f);
+	if (ret != 0) {
+		v4l2_err(&dev->v4l2_dev,
+			 "%s: failed to setup mmal components: %d\n",
+			 __func__, ret);
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+int vidioc_enum_framesizes(struct file *file, void *fh,
+			   struct v4l2_frmsizeenum *fsize)
+{
+	static const struct v4l2_frmsize_stepwise sizes = {
+		MIN_WIDTH, MAX_WIDTH, 2,
+		MIN_HEIGHT, MAX_HEIGHT, 2
+	};
+	int i;
+
+	if (fsize->index)
+		return -EINVAL;
+	for (i = 0; i < ARRAY_SIZE(formats); i++)
+		if (formats[i].fourcc == fsize->pixel_format)
+			break;
+	if (i == ARRAY_SIZE(formats))
+		return -EINVAL;
+	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+	fsize->stepwise = sizes;
+	return 0;
+}
+
+/* timeperframe is arbitrary and continous */
+static int vidioc_enum_frameintervals(struct file *file, void *priv,
+					     struct v4l2_frmivalenum *fival)
+{
+	int i;
+
+	if (fival->index)
+		return -EINVAL;
+
+	for (i = 0; i < ARRAY_SIZE(formats); i++)
+		if (formats[i].fourcc == fival->pixel_format)
+			break;
+	if (i == ARRAY_SIZE(formats))
+		return -EINVAL;
+
+	/* regarding width & height - we support any within range */
+	if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH ||
+	    fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT)
+		return -EINVAL;
+
+	fival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
+
+	/* fill in stepwise (step=1.0 is requred by V4L2 spec) */
+	fival->stepwise.min  = tpf_min;
+	fival->stepwise.max  = tpf_max;
+	fival->stepwise.step = (struct v4l2_fract) {1, 1};
+
+	return 0;
+}
+
+static int vidioc_g_parm(struct file *file, void *priv,
+			  struct v4l2_streamparm *parm)
+{
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+
+	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
+
+	parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
+	parm->parm.capture.timeperframe = dev->capture.timeperframe;
+	parm->parm.capture.readbuffers  = 1;
+	return 0;
+}
+
+#define FRACT_CMP(a, OP, b)	\
+	((u64)(a).numerator * (b).denominator  OP  \
+	 (u64)(b).numerator * (a).denominator)
+
+static int vidioc_s_parm(struct file *file, void *priv,
+			  struct v4l2_streamparm *parm)
+{
+	struct bm2835_mmal_dev *dev = video_drvdata(file);
+	struct v4l2_fract tpf;
+	struct mmal_parameter_rational fps_param;
+
+	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
+
+	tpf = parm->parm.capture.timeperframe;
+
+	/* tpf: {*, 0} resets timing; clip to [min, max]*/
+	tpf = tpf.denominator ? tpf : tpf_default;
+	tpf = FRACT_CMP(tpf, <, tpf_min) ? tpf_min : tpf;
+	tpf = FRACT_CMP(tpf, >, tpf_max) ? tpf_max : tpf;
+
+	dev->capture.timeperframe = tpf;
+	parm->parm.capture.timeperframe = tpf;
+	parm->parm.capture.readbuffers  = 1;
+
+	fps_param.num = 0;	/* Select variable fps, and then use
+				 * FPS_RANGE to select the actual limits.
+				 */
+	fps_param.den = 1;
+	set_framerate_params(dev);
+
+	return 0;
+}
+
+static const struct v4l2_ioctl_ops camera0_ioctl_ops = {
+	/* overlay */
+	.vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
+	.vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
+	.vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
+	.vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
+	.vidioc_overlay = vidioc_overlay,
+	.vidioc_g_fbuf = vidioc_g_fbuf,
+
+	/* inputs */
+	.vidioc_enum_input = vidioc_enum_input,
+	.vidioc_g_input = vidioc_g_input,
+	.vidioc_s_input = vidioc_s_input,
+
+	/* capture */
+	.vidioc_querycap = vidioc_querycap,
+	.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+	.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+	.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
+	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
+
+	/* buffer management */
+	.vidioc_reqbufs = vb2_ioctl_reqbufs,
+	.vidioc_create_bufs = vb2_ioctl_create_bufs,
+	.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+	.vidioc_querybuf = vb2_ioctl_querybuf,
+	.vidioc_qbuf = vb2_ioctl_qbuf,
+	.vidioc_dqbuf = vb2_ioctl_dqbuf,
+	.vidioc_enum_framesizes = vidioc_enum_framesizes,
+	.vidioc_enum_frameintervals = vidioc_enum_frameintervals,
+	.vidioc_g_parm        = vidioc_g_parm,
+	.vidioc_s_parm        = vidioc_s_parm,
+	.vidioc_streamon = vb2_ioctl_streamon,
+	.vidioc_streamoff = vb2_ioctl_streamoff,
+
+	.vidioc_log_status = v4l2_ctrl_log_status,
+	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+static const struct v4l2_ioctl_ops camera0_ioctl_ops_gstreamer = {
+	/* overlay */
+	.vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
+	.vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
+	.vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
+	.vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
+	.vidioc_overlay = vidioc_overlay,
+	.vidioc_g_fbuf = vidioc_g_fbuf,
+
+	/* inputs */
+	.vidioc_enum_input = vidioc_enum_input,
+	.vidioc_g_input = vidioc_g_input,
+	.vidioc_s_input = vidioc_s_input,
+
+	/* capture */
+	.vidioc_querycap = vidioc_querycap,
+	.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+	.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+	.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
+	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
+
+	/* buffer management */
+	.vidioc_reqbufs = vb2_ioctl_reqbufs,
+	.vidioc_create_bufs = vb2_ioctl_create_bufs,
+	.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+	.vidioc_querybuf = vb2_ioctl_querybuf,
+	.vidioc_qbuf = vb2_ioctl_qbuf,
+	.vidioc_dqbuf = vb2_ioctl_dqbuf,
+	/* Remove this function ptr to fix gstreamer bug
+	.vidioc_enum_framesizes = vidioc_enum_framesizes, */
+	.vidioc_enum_frameintervals = vidioc_enum_frameintervals,
+	.vidioc_g_parm        = vidioc_g_parm,
+	.vidioc_s_parm        = vidioc_s_parm,
+	.vidioc_streamon = vb2_ioctl_streamon,
+	.vidioc_streamoff = vb2_ioctl_streamoff,
+
+	.vidioc_log_status = v4l2_ctrl_log_status,
+	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+/* ------------------------------------------------------------------
+	Driver init/finalise
+   ------------------------------------------------------------------*/
+
+static const struct v4l2_file_operations camera0_fops = {
+	.owner = THIS_MODULE,
+	.open = v4l2_fh_open,
+	.release = vb2_fop_release,
+	.read = vb2_fop_read,
+	.poll = vb2_fop_poll,
+	.unlocked_ioctl = video_ioctl2,	/* V4L2 ioctl handler */
+	.mmap = vb2_fop_mmap,
+};
+
+static struct video_device vdev_template = {
+	.name = "camera0",
+	.fops = &camera0_fops,
+	.ioctl_ops = &camera0_ioctl_ops,
+	.release = video_device_release_empty,
+};
+
+static int set_camera_parameters(struct vchiq_mmal_instance *instance,
+				 struct vchiq_mmal_component *camera)
+{
+	int ret;
+	struct mmal_parameter_camera_config cam_config = {
+		.max_stills_w = MAX_WIDTH,
+		.max_stills_h = MAX_HEIGHT,
+		.stills_yuv422 = 1,
+		.one_shot_stills = 1,
+		.max_preview_video_w = (max_video_width > 1920) ?
+						max_video_width : 1920,
+		.max_preview_video_h = (max_video_height > 1088) ?
+						max_video_height : 1088,
+		.num_preview_video_frames = 3,
+		.stills_capture_circular_buffer_height = 0,
+		.fast_preview_resume = 0,
+		.use_stc_timestamp = MMAL_PARAM_TIMESTAMP_MODE_RAW_STC
+	};
+
+	ret = vchiq_mmal_port_parameter_set(instance, &camera->control,
+					    MMAL_PARAMETER_CAMERA_CONFIG,
+					    &cam_config, sizeof(cam_config));
+	return ret;
+}
+
+/* MMAL instance and component init */
+static int __init mmal_init(struct bm2835_mmal_dev *dev)
+{
+	int ret;
+	struct mmal_es_format *format;
+	u32 bool_true = 1;
+
+	ret = vchiq_mmal_init(&dev->instance);
+	if (ret < 0)
+		return ret;
+
+	/* get the camera component ready */
+	ret = vchiq_mmal_component_init(dev->instance, "ril.camera",
+					&dev->component[MMAL_COMPONENT_CAMERA]);
+	if (ret < 0)
+		goto unreg_mmal;
+
+	if (dev->component[MMAL_COMPONENT_CAMERA]->outputs <
+	    MMAL_CAMERA_PORT_COUNT) {
+		ret = -EINVAL;
+		goto unreg_camera;
+	}
+
+	ret = set_camera_parameters(dev->instance,
+				    dev->component[MMAL_COMPONENT_CAMERA]);
+	if (ret < 0)
+		goto unreg_camera;
+
+	format =
+	    &dev->component[MMAL_COMPONENT_CAMERA]->
+	    output[MMAL_CAMERA_PORT_PREVIEW].format;
+
+	format->encoding = MMAL_ENCODING_OPAQUE;
+	format->encoding_variant = MMAL_ENCODING_I420;
+
+	format->es->video.width = 1024;
+	format->es->video.height = 768;
+	format->es->video.crop.x = 0;
+	format->es->video.crop.y = 0;
+	format->es->video.crop.width = 1024;
+	format->es->video.crop.height = 768;
+	format->es->video.frame_rate.num = 0; /* Rely on fps_range */
+	format->es->video.frame_rate.den = 1;
+
+	format =
+	    &dev->component[MMAL_COMPONENT_CAMERA]->
+	    output[MMAL_CAMERA_PORT_VIDEO].format;
+
+	format->encoding = MMAL_ENCODING_OPAQUE;
+	format->encoding_variant = MMAL_ENCODING_I420;
+
+	format->es->video.width = 1024;
+	format->es->video.height = 768;
+	format->es->video.crop.x = 0;
+	format->es->video.crop.y = 0;
+	format->es->video.crop.width = 1024;
+	format->es->video.crop.height = 768;
+	format->es->video.frame_rate.num = 0; /* Rely on fps_range */
+	format->es->video.frame_rate.den = 1;
+
+	vchiq_mmal_port_parameter_set(dev->instance,
+		&dev->component[MMAL_COMPONENT_CAMERA]->
+				output[MMAL_CAMERA_PORT_VIDEO],
+		MMAL_PARAMETER_NO_IMAGE_PADDING,
+		&bool_true, sizeof(bool_true));
+
+	format =
+	    &dev->component[MMAL_COMPONENT_CAMERA]->
+	    output[MMAL_CAMERA_PORT_CAPTURE].format;
+
+	format->encoding = MMAL_ENCODING_OPAQUE;
+
+	format->es->video.width = 2592;
+	format->es->video.height = 1944;
+	format->es->video.crop.x = 0;
+	format->es->video.crop.y = 0;
+	format->es->video.crop.width = 2592;
+	format->es->video.crop.height = 1944;
+	format->es->video.frame_rate.num = 0; /* Rely on fps_range */
+	format->es->video.frame_rate.den = 1;
+
+	dev->capture.width = format->es->video.width;
+	dev->capture.height = format->es->video.height;
+	dev->capture.fmt = &formats[0];
+	dev->capture.encode_component = NULL;
+	dev->capture.timeperframe = tpf_default;
+	dev->capture.enc_profile = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH;
+	dev->capture.enc_level = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
+
+	vchiq_mmal_port_parameter_set(dev->instance,
+		&dev->component[MMAL_COMPONENT_CAMERA]->
+			output[MMAL_CAMERA_PORT_CAPTURE],
+		MMAL_PARAMETER_NO_IMAGE_PADDING,
+		&bool_true, sizeof(bool_true));
+
+	/* get the preview component ready */
+	ret = vchiq_mmal_component_init(
+			dev->instance, "ril.video_render",
+			&dev->component[MMAL_COMPONENT_PREVIEW]);
+	if (ret < 0)
+		goto unreg_camera;
+
+	if (dev->component[MMAL_COMPONENT_PREVIEW]->inputs < 1) {
+		ret = -EINVAL;
+		pr_debug("too few input ports %d needed %d\n",
+			 dev->component[MMAL_COMPONENT_PREVIEW]->inputs, 1);
+		goto unreg_preview;
+	}
+
+	/* get the image encoder component ready */
+	ret = vchiq_mmal_component_init(
+		dev->instance, "ril.image_encode",
+		&dev->component[MMAL_COMPONENT_IMAGE_ENCODE]);
+	if (ret < 0)
+		goto unreg_preview;
+
+	if (dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->inputs < 1) {
+		ret = -EINVAL;
+		v4l2_err(&dev->v4l2_dev, "too few input ports %d needed %d\n",
+			 dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->inputs,
+			 1);
+		goto unreg_image_encoder;
+	}
+
+	/* get the video encoder component ready */
+	ret = vchiq_mmal_component_init(dev->instance, "ril.video_encode",
+					&dev->
+					component[MMAL_COMPONENT_VIDEO_ENCODE]);
+	if (ret < 0)
+		goto unreg_image_encoder;
+
+	if (dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->inputs < 1) {
+		ret = -EINVAL;
+		v4l2_err(&dev->v4l2_dev, "too few input ports %d needed %d\n",
+			 dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->inputs,
+			 1);
+		goto unreg_vid_encoder;
+	}
+
+	{
+		struct vchiq_mmal_port *encoder_port =
+			&dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0];
+		encoder_port->format.encoding = MMAL_ENCODING_H264;
+		ret = vchiq_mmal_port_set_format(dev->instance,
+			encoder_port);
+	}
+
+	{
+		unsigned int enable = 1;
+		vchiq_mmal_port_parameter_set(
+			dev->instance,
+			&dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->control,
+			MMAL_PARAMETER_VIDEO_IMMUTABLE_INPUT,
+			&enable, sizeof(enable));
+
+		vchiq_mmal_port_parameter_set(dev->instance,
+			&dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->control,
+			MMAL_PARAMETER_MINIMISE_FRAGMENTATION,
+			&enable,
+			sizeof(enable));
+	}
+	ret = bm2835_mmal_set_all_camera_controls(dev);
+	if (ret < 0)
+		goto unreg_vid_encoder;
+
+	return 0;
+
+unreg_vid_encoder:
+	pr_err("Cleanup: Destroy video encoder\n");
+	vchiq_mmal_component_finalise(
+		dev->instance,
+		dev->component[MMAL_COMPONENT_VIDEO_ENCODE]);
+
+unreg_image_encoder:
+	pr_err("Cleanup: Destroy image encoder\n");
+	vchiq_mmal_component_finalise(
+		dev->instance,
+		dev->component[MMAL_COMPONENT_IMAGE_ENCODE]);
+
+unreg_preview:
+	pr_err("Cleanup: Destroy video render\n");
+	vchiq_mmal_component_finalise(dev->instance,
+				      dev->component[MMAL_COMPONENT_PREVIEW]);
+
+unreg_camera:
+	pr_err("Cleanup: Destroy camera\n");
+	vchiq_mmal_component_finalise(dev->instance,
+				      dev->component[MMAL_COMPONENT_CAMERA]);
+
+unreg_mmal:
+	vchiq_mmal_finalise(dev->instance);
+	return ret;
+}
+
+static int __init bm2835_mmal_init_device(struct bm2835_mmal_dev *dev,
+					  struct video_device *vfd)
+{
+	int ret;
+
+	*vfd = vdev_template;
+	if (gst_v4l2src_is_broken) {
+		v4l2_info(&dev->v4l2_dev,
+		  "Work-around for gstreamer issue is active.\n");
+		vfd->ioctl_ops = &camera0_ioctl_ops_gstreamer;
+	}
+
+	vfd->v4l2_dev = &dev->v4l2_dev;
+
+	vfd->lock = &dev->mutex;
+
+	vfd->queue = &dev->capture.vb_vidq;
+
+	/* video device needs to be able to access instance data */
+	video_set_drvdata(vfd, dev);
+
+	ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
+	if (ret < 0)
+		return ret;
+
+	v4l2_info(vfd->v4l2_dev,
+		"V4L2 device registered as %s - stills mode > %dx%d\n",
+		video_device_node_name(vfd), max_video_width, max_video_height);
+
+	return 0;
+}
+
+static struct v4l2_format default_v4l2_format = {
+	.fmt.pix.pixelformat = V4L2_PIX_FMT_JPEG,
+	.fmt.pix.width = 1024,
+	.fmt.pix.bytesperline = 1024,
+	.fmt.pix.height = 768,
+	.fmt.pix.sizeimage = 1024*768,
+};
+
+static int __init bm2835_mmal_init(void)
+{
+	int ret;
+	struct bm2835_mmal_dev *dev;
+	struct vb2_queue *q;
+
+	dev = kzalloc(sizeof(*gdev), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
+
+	/* setup device defaults */
+	dev->overlay.w.left = 150;
+	dev->overlay.w.top = 50;
+	dev->overlay.w.width = 1024;
+	dev->overlay.w.height = 768;
+	dev->overlay.clipcount = 0;
+	dev->overlay.field = V4L2_FIELD_NONE;
+
+	dev->capture.fmt = &formats[3]; /* JPEG */
+
+	/* v4l device registration */
+	snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name),
+		 "%s", BM2835_MMAL_MODULE_NAME);
+	ret = v4l2_device_register(NULL, &dev->v4l2_dev);
+	if (ret)
+		goto free_dev;
+
+	/* setup v4l controls */
+	ret = bm2835_mmal_init_controls(dev, &dev->ctrl_handler);
+	if (ret < 0)
+		goto unreg_dev;
+	dev->v4l2_dev.ctrl_handler = &dev->ctrl_handler;
+
+	/* mmal init */
+	ret = mmal_init(dev);
+	if (ret < 0)
+		goto unreg_dev;
+
+	/* initialize queue */
+	q = &dev->capture.vb_vidq;
+	memset(q, 0, sizeof(*q));
+	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
+	q->drv_priv = dev;
+	q->buf_struct_size = sizeof(struct mmal_buffer);
+	q->ops = &bm2835_mmal_video_qops;
+	q->mem_ops = &vb2_vmalloc_memops;
+	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	ret = vb2_queue_init(q);
+	if (ret < 0)
+		goto unreg_dev;
+
+	/* v4l2 core mutex used to protect all fops and v4l2 ioctls. */
+	mutex_init(&dev->mutex);
+
+	/* initialise video devices */
+	ret = bm2835_mmal_init_device(dev, &dev->vdev);
+	if (ret < 0)
+		goto unreg_dev;
+
+	/* Really want to call vidioc_s_fmt_vid_cap with the default
+	 * format, but currently the APIs don't join up.
+	 */
+	ret = mmal_setup_components(dev, &default_v4l2_format);
+	if (ret < 0) {
+		v4l2_err(&dev->v4l2_dev,
+			 "%s: could not setup components\n", __func__);
+		goto unreg_dev;
+	}
+
+	v4l2_info(&dev->v4l2_dev,
+		  "Broadcom 2835 MMAL video capture ver %s loaded.\n",
+		  BM2835_MMAL_VERSION);
+
+	gdev = dev;
+	return 0;
+
+unreg_dev:
+	v4l2_ctrl_handler_free(&dev->ctrl_handler);
+	v4l2_device_unregister(&dev->v4l2_dev);
+
+free_dev:
+	kfree(dev);
+
+	v4l2_err(&dev->v4l2_dev,
+		 "%s: error %d while loading driver\n",
+		 BM2835_MMAL_MODULE_NAME, ret);
+
+	return ret;
+}
+
+static void __exit bm2835_mmal_exit(void)
+{
+	if (!gdev)
+		return;
+
+	v4l2_info(&gdev->v4l2_dev, "unregistering %s\n",
+		  video_device_node_name(&gdev->vdev));
+
+	video_unregister_device(&gdev->vdev);
+
+	if (gdev->capture.encode_component) {
+		v4l2_dbg(1, bcm2835_v4l2_debug, &gdev->v4l2_dev,
+			 "mmal_exit - disconnect tunnel\n");
+		vchiq_mmal_port_connect_tunnel(gdev->instance,
+					       gdev->capture.camera_port, NULL);
+		vchiq_mmal_component_disable(gdev->instance,
+					     gdev->capture.encode_component);
+	}
+	vchiq_mmal_component_disable(gdev->instance,
+				     gdev->component[MMAL_COMPONENT_CAMERA]);
+
+	vchiq_mmal_component_finalise(gdev->instance,
+				      gdev->
+				      component[MMAL_COMPONENT_VIDEO_ENCODE]);
+
+	vchiq_mmal_component_finalise(gdev->instance,
+				      gdev->
+				      component[MMAL_COMPONENT_IMAGE_ENCODE]);
+
+	vchiq_mmal_component_finalise(gdev->instance,
+				      gdev->component[MMAL_COMPONENT_PREVIEW]);
+
+	vchiq_mmal_component_finalise(gdev->instance,
+				      gdev->component[MMAL_COMPONENT_CAMERA]);
+
+	vchiq_mmal_finalise(gdev->instance);
+
+	v4l2_ctrl_handler_free(&gdev->ctrl_handler);
+
+	v4l2_device_unregister(&gdev->v4l2_dev);
+
+	kfree(gdev);
+}
+
+module_init(bm2835_mmal_init);
+module_exit(bm2835_mmal_exit);
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/bcm2835-camera.h linux-rpi/drivers/media/platform/bcm2835/bcm2835-camera.h
--- linux-3.18.10/drivers/media/platform/bcm2835/bcm2835-camera.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/bcm2835-camera.h	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,126 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ *
+ * core driver device
+ */
+
+#define V4L2_CTRL_COUNT 28 /* number of v4l controls */
+
+enum {
+	MMAL_COMPONENT_CAMERA = 0,
+	MMAL_COMPONENT_PREVIEW,
+	MMAL_COMPONENT_IMAGE_ENCODE,
+	MMAL_COMPONENT_VIDEO_ENCODE,
+	MMAL_COMPONENT_COUNT
+};
+
+enum {
+	MMAL_CAMERA_PORT_PREVIEW = 0,
+	MMAL_CAMERA_PORT_VIDEO,
+	MMAL_CAMERA_PORT_CAPTURE,
+	MMAL_CAMERA_PORT_COUNT
+};
+
+#define PREVIEW_LAYER      2
+
+extern int bcm2835_v4l2_debug;
+
+struct bm2835_mmal_dev {
+	/* v4l2 devices */
+	struct v4l2_device     v4l2_dev;
+	struct video_device    vdev;
+	struct mutex           mutex;
+
+	/* controls */
+	struct v4l2_ctrl_handler  ctrl_handler;
+	struct v4l2_ctrl          *ctrls[V4L2_CTRL_COUNT];
+	enum v4l2_scene_mode	  scene_mode;
+	struct mmal_colourfx      colourfx;
+	int                       hflip;
+	int                       vflip;
+	int			  red_gain;
+	int			  blue_gain;
+	enum mmal_parameter_exposuremode exposure_mode_user;
+	enum v4l2_exposure_auto_type exposure_mode_v4l2_user;
+	/* active exposure mode may differ if selected via a scene mode */
+	enum mmal_parameter_exposuremode exposure_mode_active;
+	enum mmal_parameter_exposuremeteringmode metering_mode;
+	unsigned int		  manual_shutter_speed;
+	bool			  exp_auto_priority;
+
+	/* allocated mmal instance and components */
+	struct vchiq_mmal_instance   *instance;
+	struct vchiq_mmal_component  *component[MMAL_COMPONENT_COUNT];
+	int camera_use_count;
+
+	struct v4l2_window overlay;
+
+	struct {
+		unsigned int     width;  /* width */
+		unsigned int     height;  /* height */
+		unsigned int     stride;  /* stride */
+		unsigned int     buffersize; /* buffer size with padding */
+		struct mmal_fmt  *fmt;
+		struct v4l2_fract timeperframe;
+
+		/* H264 encode bitrate */
+		int         encode_bitrate;
+		/* H264 bitrate mode. CBR/VBR */
+		int         encode_bitrate_mode;
+		/* H264 profile */
+		enum v4l2_mpeg_video_h264_profile enc_profile;
+		/* H264 level */
+		enum v4l2_mpeg_video_h264_level enc_level;
+		/* JPEG Q-factor */
+		int         q_factor;
+
+		struct vb2_queue	vb_vidq;
+
+		/* VC start timestamp for streaming */
+		s64         vc_start_timestamp;
+		/* Kernel start timestamp for streaming */
+		struct timeval kernel_start_ts;
+
+		struct vchiq_mmal_port  *port; /* port being used for capture */
+		/* camera port being used for capture */
+		struct vchiq_mmal_port  *camera_port;
+		/* component being used for encode */
+		struct vchiq_mmal_component *encode_component;
+		/* number of frames remaining which driver should capture */
+		unsigned int  frame_count;
+		/* last frame completion */
+		struct completion  frame_cmplt;
+
+	} capture;
+
+};
+
+int bm2835_mmal_init_controls(
+			struct bm2835_mmal_dev *dev,
+			struct v4l2_ctrl_handler *hdl);
+
+int bm2835_mmal_set_all_camera_controls(struct bm2835_mmal_dev *dev);
+int set_framerate_params(struct bm2835_mmal_dev *dev);
+
+/* Debug helpers */
+
+#define v4l2_dump_pix_format(level, debug, dev, pix_fmt, desc)	\
+{	\
+	v4l2_dbg(level, debug, dev,	\
+"%s: w %u h %u field %u pfmt 0x%x bpl %u sz_img %u colorspace 0x%x priv %u\n", \
+		desc == NULL ? "" : desc,	\
+		(pix_fmt)->width, (pix_fmt)->height, (pix_fmt)->field,	\
+		(pix_fmt)->pixelformat, (pix_fmt)->bytesperline,	\
+		(pix_fmt)->sizeimage, (pix_fmt)->colorspace, (pix_fmt)->priv); \
+}
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/controls.c linux-rpi/drivers/media/platform/bcm2835/controls.c
--- linux-3.18.10/drivers/media/platform/bcm2835/controls.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/controls.c	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,1322 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <media/videobuf2-vmalloc.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-common.h>
+
+#include "mmal-common.h"
+#include "mmal-vchiq.h"
+#include "mmal-parameters.h"
+#include "bcm2835-camera.h"
+
+/* The supported V4L2_CID_AUTO_EXPOSURE_BIAS values are from -4.0 to +4.0.
+ * MMAL values are in 1/6th increments so the MMAL range is -24 to +24.
+ * V4L2 docs say value "is expressed in terms of EV, drivers should interpret
+ * the values as 0.001 EV units, where the value 1000 stands for +1 EV."
+ * V4L2 is limited to a max of 32 values in a menu, so count in 1/3rds from
+ * -4 to +4
+ */
+static const s64 ev_bias_qmenu[] = {
+	-4000, -3667, -3333,
+	-3000, -2667, -2333,
+	-2000, -1667, -1333,
+	-1000,  -667,  -333,
+	    0,   333,   667,
+	 1000,  1333,  1667,
+	 2000,  2333,  2667,
+	 3000,  3333,  3667,
+	 4000
+};
+
+/* Supported ISO values
+ * ISOO = auto ISO
+ */
+static const s64 iso_qmenu[] = {
+	0, 100, 200, 400, 800,
+};
+
+static const s64 mains_freq_qmenu[] = {
+	V4L2_CID_POWER_LINE_FREQUENCY_DISABLED,
+	V4L2_CID_POWER_LINE_FREQUENCY_50HZ,
+	V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
+	V4L2_CID_POWER_LINE_FREQUENCY_AUTO
+};
+
+/* Supported video encode modes */
+static const s64 bitrate_mode_qmenu[] = {
+	(s64)V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
+	(s64)V4L2_MPEG_VIDEO_BITRATE_MODE_CBR,
+};
+
+enum bm2835_mmal_ctrl_type {
+	MMAL_CONTROL_TYPE_STD,
+	MMAL_CONTROL_TYPE_STD_MENU,
+	MMAL_CONTROL_TYPE_INT_MENU,
+	MMAL_CONTROL_TYPE_CLUSTER, /* special cluster entry */
+};
+
+struct bm2835_mmal_v4l2_ctrl;
+
+typedef	int(bm2835_mmal_v4l2_ctrl_cb)(
+				struct bm2835_mmal_dev *dev,
+				struct v4l2_ctrl *ctrl,
+				const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl);
+
+struct bm2835_mmal_v4l2_ctrl {
+	u32 id; /* v4l2 control identifier */
+	enum bm2835_mmal_ctrl_type type;
+	/* control minimum value or
+	 * mask for MMAL_CONTROL_TYPE_STD_MENU */
+	s32 min;
+	s32 max; /* maximum value of control */
+	s32 def;  /* default value of control */
+	s32 step; /* step size of the control */
+	const s64 *imenu; /* integer menu array */
+	u32 mmal_id; /* mmal parameter id */
+	bm2835_mmal_v4l2_ctrl_cb *setter;
+	bool ignore_errors;
+};
+
+struct v4l2_to_mmal_effects_setting {
+	u32 v4l2_effect;
+	u32 mmal_effect;
+	s32 col_fx_enable;
+	s32 col_fx_fixed_cbcr;
+	u32 u;
+	u32 v;
+	u32 num_effect_params;
+	u32 effect_params[MMAL_MAX_IMAGEFX_PARAMETERS];
+};
+
+static const struct v4l2_to_mmal_effects_setting
+	v4l2_to_mmal_effects_values[] = {
+	{  V4L2_COLORFX_NONE,         MMAL_PARAM_IMAGEFX_NONE,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_BW,           MMAL_PARAM_IMAGEFX_NONE,
+		1,   0,    128,  128, 0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_SEPIA,        MMAL_PARAM_IMAGEFX_NONE,
+		1,   0,    87,   151, 0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_NEGATIVE,     MMAL_PARAM_IMAGEFX_NEGATIVE,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_EMBOSS,       MMAL_PARAM_IMAGEFX_EMBOSS,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_SKETCH,       MMAL_PARAM_IMAGEFX_SKETCH,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_SKY_BLUE,     MMAL_PARAM_IMAGEFX_PASTEL,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_GRASS_GREEN,  MMAL_PARAM_IMAGEFX_WATERCOLOUR,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_SKIN_WHITEN,  MMAL_PARAM_IMAGEFX_WASHEDOUT,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_VIVID,        MMAL_PARAM_IMAGEFX_SATURATION,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_AQUA,         MMAL_PARAM_IMAGEFX_NONE,
+		1,   0,    171,  121, 0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_ART_FREEZE,   MMAL_PARAM_IMAGEFX_HATCH,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_SILHOUETTE,   MMAL_PARAM_IMAGEFX_FILM,
+		0,   0,    0,    0,   0, {0, 0, 0, 0, 0} },
+	{  V4L2_COLORFX_SOLARIZATION, MMAL_PARAM_IMAGEFX_SOLARIZE,
+		0,   0,    0,    0,   5, {1, 128, 160, 160, 48} },
+	{  V4L2_COLORFX_ANTIQUE,      MMAL_PARAM_IMAGEFX_COLOURBALANCE,
+		0,   0,    0,    0,   3, {108, 274, 238, 0, 0} },
+	{  V4L2_COLORFX_SET_CBCR,     MMAL_PARAM_IMAGEFX_NONE,
+		1,   1,    0,    0,   0, {0, 0, 0, 0, 0} }
+};
+
+struct v4l2_mmal_scene_config {
+	enum v4l2_scene_mode			v4l2_scene;
+	enum mmal_parameter_exposuremode	exposure_mode;
+	enum mmal_parameter_exposuremeteringmode metering_mode;
+};
+
+static const struct v4l2_mmal_scene_config scene_configs[] = {
+	/* V4L2_SCENE_MODE_NONE automatically added */
+	{
+		V4L2_SCENE_MODE_NIGHT,
+		MMAL_PARAM_EXPOSUREMODE_NIGHT,
+		MMAL_PARAM_EXPOSUREMETERINGMODE_AVERAGE
+	},
+	{
+		V4L2_SCENE_MODE_SPORTS,
+		MMAL_PARAM_EXPOSUREMODE_SPORTS,
+		MMAL_PARAM_EXPOSUREMETERINGMODE_AVERAGE
+	},
+};
+
+/* control handlers*/
+
+static int ctrl_set_rational(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	struct mmal_parameter_rational rational_value;
+	struct vchiq_mmal_port *control;
+
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	rational_value.num = ctrl->val;
+	rational_value.den = 100;
+
+	return vchiq_mmal_port_parameter_set(dev->instance, control,
+					     mmal_ctrl->mmal_id,
+					     &rational_value,
+					     sizeof(rational_value));
+}
+
+static int ctrl_set_value(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	u32 u32_value;
+	struct vchiq_mmal_port *control;
+
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	u32_value = ctrl->val;
+
+	return vchiq_mmal_port_parameter_set(dev->instance, control,
+					     mmal_ctrl->mmal_id,
+					     &u32_value, sizeof(u32_value));
+}
+
+static int ctrl_set_value_menu(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	u32 u32_value;
+	struct vchiq_mmal_port *control;
+
+	if (ctrl->val > mmal_ctrl->max || ctrl->val < mmal_ctrl->min)
+		return 1;
+
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	u32_value = mmal_ctrl->imenu[ctrl->val];
+
+	return vchiq_mmal_port_parameter_set(dev->instance, control,
+					     mmal_ctrl->mmal_id,
+					     &u32_value, sizeof(u32_value));
+}
+
+static int ctrl_set_value_ev(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	s32 s32_value;
+	struct vchiq_mmal_port *control;
+
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	s32_value = (ctrl->val-12)*2;	/* Convert from index to 1/6ths */
+
+	return vchiq_mmal_port_parameter_set(dev->instance, control,
+					     mmal_ctrl->mmal_id,
+					     &s32_value, sizeof(s32_value));
+}
+
+static int ctrl_set_rotate(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	int ret;
+	u32 u32_value;
+	struct vchiq_mmal_component *camera;
+
+	camera = dev->component[MMAL_COMPONENT_CAMERA];
+
+	u32_value = ((ctrl->val % 360) / 90) * 90;
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[0],
+					    mmal_ctrl->mmal_id,
+					    &u32_value, sizeof(u32_value));
+	if (ret < 0)
+		return ret;
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[1],
+					    mmal_ctrl->mmal_id,
+					    &u32_value, sizeof(u32_value));
+	if (ret < 0)
+		return ret;
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[2],
+					    mmal_ctrl->mmal_id,
+					    &u32_value, sizeof(u32_value));
+
+	return ret;
+}
+
+static int ctrl_set_flip(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	int ret;
+	u32 u32_value;
+	struct vchiq_mmal_component *camera;
+
+	if (ctrl->id == V4L2_CID_HFLIP)
+		dev->hflip = ctrl->val;
+	else
+		dev->vflip = ctrl->val;
+
+	camera = dev->component[MMAL_COMPONENT_CAMERA];
+
+	if (dev->hflip && dev->vflip)
+		u32_value = MMAL_PARAM_MIRROR_BOTH;
+	else if (dev->hflip)
+		u32_value = MMAL_PARAM_MIRROR_HORIZONTAL;
+	else if (dev->vflip)
+		u32_value = MMAL_PARAM_MIRROR_VERTICAL;
+	else
+		u32_value = MMAL_PARAM_MIRROR_NONE;
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[0],
+					    mmal_ctrl->mmal_id,
+					    &u32_value, sizeof(u32_value));
+	if (ret < 0)
+		return ret;
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[1],
+					    mmal_ctrl->mmal_id,
+					    &u32_value, sizeof(u32_value));
+	if (ret < 0)
+		return ret;
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance, &camera->output[2],
+					    mmal_ctrl->mmal_id,
+					    &u32_value, sizeof(u32_value));
+
+	return ret;
+
+}
+
+static int ctrl_set_exposure(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	enum mmal_parameter_exposuremode exp_mode = dev->exposure_mode_user;
+	u32 shutter_speed = 0;
+	struct vchiq_mmal_port *control;
+	int ret = 0;
+
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	if (mmal_ctrl->mmal_id == MMAL_PARAMETER_SHUTTER_SPEED)	{
+		/* V4L2 is in 100usec increments.
+		 * MMAL is 1usec.
+		 */
+		dev->manual_shutter_speed = ctrl->val * 100;
+	} else if (mmal_ctrl->mmal_id == MMAL_PARAMETER_EXPOSURE_MODE) {
+		switch (ctrl->val) {
+		case V4L2_EXPOSURE_AUTO:
+			exp_mode = MMAL_PARAM_EXPOSUREMODE_AUTO;
+			break;
+
+		case V4L2_EXPOSURE_MANUAL:
+			exp_mode = MMAL_PARAM_EXPOSUREMODE_OFF;
+			break;
+		}
+		dev->exposure_mode_user = exp_mode;
+		dev->exposure_mode_v4l2_user = ctrl->val;
+	} else if (mmal_ctrl->id == V4L2_CID_EXPOSURE_AUTO_PRIORITY) {
+		dev->exp_auto_priority = ctrl->val;
+	}
+
+	if (dev->scene_mode == V4L2_SCENE_MODE_NONE) {
+		if (exp_mode == MMAL_PARAM_EXPOSUREMODE_OFF)
+			shutter_speed = dev->manual_shutter_speed;
+
+		ret = vchiq_mmal_port_parameter_set(dev->instance,
+					control,
+					MMAL_PARAMETER_SHUTTER_SPEED,
+					&shutter_speed,
+					sizeof(shutter_speed));
+		ret += vchiq_mmal_port_parameter_set(dev->instance,
+					control,
+					MMAL_PARAMETER_EXPOSURE_MODE,
+					&exp_mode,
+					sizeof(u32));
+		dev->exposure_mode_active = exp_mode;
+	}
+	/* exposure_dynamic_framerate (V4L2_CID_EXPOSURE_AUTO_PRIORITY) should
+	 * always apply irrespective of scene mode.
+	 */
+	ret += set_framerate_params(dev);
+
+	return ret;
+}
+
+static int ctrl_set_metering_mode(struct bm2835_mmal_dev *dev,
+			   struct v4l2_ctrl *ctrl,
+			   const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	switch (ctrl->val) {
+	case V4L2_EXPOSURE_METERING_AVERAGE:
+		dev->metering_mode = MMAL_PARAM_EXPOSUREMETERINGMODE_AVERAGE;
+		break;
+
+	case V4L2_EXPOSURE_METERING_CENTER_WEIGHTED:
+		dev->metering_mode = MMAL_PARAM_EXPOSUREMETERINGMODE_BACKLIT;
+		break;
+
+	case V4L2_EXPOSURE_METERING_SPOT:
+		dev->metering_mode = MMAL_PARAM_EXPOSUREMETERINGMODE_SPOT;
+		break;
+
+	/* todo matrix weighting not added to Linux API till 3.9
+	case V4L2_EXPOSURE_METERING_MATRIX:
+		dev->metering_mode = MMAL_PARAM_EXPOSUREMETERINGMODE_MATRIX;
+		break;
+	*/
+
+	}
+
+	if (dev->scene_mode == V4L2_SCENE_MODE_NONE) {
+		struct vchiq_mmal_port *control;
+		u32 u32_value = dev->metering_mode;
+
+		control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+		return vchiq_mmal_port_parameter_set(dev->instance, control,
+					     mmal_ctrl->mmal_id,
+					     &u32_value, sizeof(u32_value));
+	} else
+		return 0;
+}
+
+static int ctrl_set_flicker_avoidance(struct bm2835_mmal_dev *dev,
+			   struct v4l2_ctrl *ctrl,
+			   const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	u32 u32_value;
+	struct vchiq_mmal_port *control;
+
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	switch (ctrl->val) {
+	case V4L2_CID_POWER_LINE_FREQUENCY_DISABLED:
+		u32_value = MMAL_PARAM_FLICKERAVOID_OFF;
+		break;
+	case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:
+		u32_value = MMAL_PARAM_FLICKERAVOID_50HZ;
+		break;
+	case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:
+		u32_value = MMAL_PARAM_FLICKERAVOID_60HZ;
+		break;
+	case V4L2_CID_POWER_LINE_FREQUENCY_AUTO:
+		u32_value = MMAL_PARAM_FLICKERAVOID_AUTO;
+		break;
+	}
+
+	return vchiq_mmal_port_parameter_set(dev->instance, control,
+					     mmal_ctrl->mmal_id,
+					     &u32_value, sizeof(u32_value));
+}
+
+static int ctrl_set_awb_mode(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	u32 u32_value;
+	struct vchiq_mmal_port *control;
+
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	switch (ctrl->val) {
+	case V4L2_WHITE_BALANCE_MANUAL:
+		u32_value = MMAL_PARAM_AWBMODE_OFF;
+		break;
+
+	case V4L2_WHITE_BALANCE_AUTO:
+		u32_value = MMAL_PARAM_AWBMODE_AUTO;
+		break;
+
+	case V4L2_WHITE_BALANCE_INCANDESCENT:
+		u32_value = MMAL_PARAM_AWBMODE_INCANDESCENT;
+		break;
+
+	case V4L2_WHITE_BALANCE_FLUORESCENT:
+		u32_value = MMAL_PARAM_AWBMODE_FLUORESCENT;
+		break;
+
+	case V4L2_WHITE_BALANCE_FLUORESCENT_H:
+		u32_value = MMAL_PARAM_AWBMODE_TUNGSTEN;
+		break;
+
+	case V4L2_WHITE_BALANCE_HORIZON:
+		u32_value = MMAL_PARAM_AWBMODE_HORIZON;
+		break;
+
+	case V4L2_WHITE_BALANCE_DAYLIGHT:
+		u32_value = MMAL_PARAM_AWBMODE_SUNLIGHT;
+		break;
+
+	case V4L2_WHITE_BALANCE_FLASH:
+		u32_value = MMAL_PARAM_AWBMODE_FLASH;
+		break;
+
+	case V4L2_WHITE_BALANCE_CLOUDY:
+		u32_value = MMAL_PARAM_AWBMODE_CLOUDY;
+		break;
+
+	case V4L2_WHITE_BALANCE_SHADE:
+		u32_value = MMAL_PARAM_AWBMODE_SHADE;
+		break;
+
+	}
+
+	return vchiq_mmal_port_parameter_set(dev->instance, control,
+					     mmal_ctrl->mmal_id,
+					     &u32_value, sizeof(u32_value));
+}
+
+static int ctrl_set_awb_gains(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	struct vchiq_mmal_port *control;
+	struct mmal_parameter_awbgains gains;
+
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	if (ctrl->id == V4L2_CID_RED_BALANCE)
+		dev->red_gain = ctrl->val;
+	else if (ctrl->id == V4L2_CID_BLUE_BALANCE)
+		dev->blue_gain = ctrl->val;
+
+	gains.r_gain.num = dev->red_gain;
+	gains.b_gain.num = dev->blue_gain;
+	gains.r_gain.den = gains.b_gain.den = 1000;
+
+	return vchiq_mmal_port_parameter_set(dev->instance, control,
+					     mmal_ctrl->mmal_id,
+					     &gains, sizeof(gains));
+}
+
+static int ctrl_set_image_effect(struct bm2835_mmal_dev *dev,
+		   struct v4l2_ctrl *ctrl,
+		   const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	int ret = -EINVAL;
+	int i, j;
+	struct vchiq_mmal_port *control;
+	struct mmal_parameter_imagefx_parameters imagefx;
+
+	for (i = 0; i < ARRAY_SIZE(v4l2_to_mmal_effects_values); i++) {
+		if (ctrl->val == v4l2_to_mmal_effects_values[i].v4l2_effect) {
+
+			imagefx.effect =
+				v4l2_to_mmal_effects_values[i].mmal_effect;
+			imagefx.num_effect_params =
+				v4l2_to_mmal_effects_values[i].num_effect_params;
+
+			if (imagefx.num_effect_params > MMAL_MAX_IMAGEFX_PARAMETERS)
+				imagefx.num_effect_params = MMAL_MAX_IMAGEFX_PARAMETERS;
+
+			for (j = 0; j < imagefx.num_effect_params; j++)
+				imagefx.effect_parameter[j] =
+					v4l2_to_mmal_effects_values[i].effect_params[j];
+
+			dev->colourfx.enable =
+				v4l2_to_mmal_effects_values[i].col_fx_enable;
+			if (!v4l2_to_mmal_effects_values[i].col_fx_fixed_cbcr) {
+				dev->colourfx.u =
+					v4l2_to_mmal_effects_values[i].u;
+				dev->colourfx.v =
+					v4l2_to_mmal_effects_values[i].v;
+			}
+
+			control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+			ret = vchiq_mmal_port_parameter_set(
+					dev->instance, control,
+					MMAL_PARAMETER_IMAGE_EFFECT_PARAMETERS,
+					&imagefx, sizeof(imagefx));
+			if (ret)
+				goto exit;
+
+			ret = vchiq_mmal_port_parameter_set(
+					dev->instance, control,
+					MMAL_PARAMETER_COLOUR_EFFECT,
+					&dev->colourfx, sizeof(dev->colourfx));
+		}
+	}
+
+exit:
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		 "mmal_ctrl:%p ctrl id:0x%x ctrl val:%d imagefx:0x%x color_effect:%s u:%d v:%d ret %d(%d)\n",
+				mmal_ctrl, ctrl->id, ctrl->val, imagefx.effect,
+				dev->colourfx.enable ? "true" : "false",
+				dev->colourfx.u, dev->colourfx.v,
+				ret, (ret == 0 ? 0 : -EINVAL));
+	return (ret == 0 ? 0 : EINVAL);
+}
+
+static int ctrl_set_colfx(struct bm2835_mmal_dev *dev,
+		   struct v4l2_ctrl *ctrl,
+		   const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	int ret = -EINVAL;
+	struct vchiq_mmal_port *control;
+
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	dev->colourfx.enable = (ctrl->val & 0xff00) >> 8;
+	dev->colourfx.enable = ctrl->val & 0xff;
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance, control,
+					MMAL_PARAMETER_COLOUR_EFFECT,
+					&dev->colourfx, sizeof(dev->colourfx));
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		 "%s: After: mmal_ctrl:%p ctrl id:0x%x ctrl val:%d ret %d(%d)\n",
+			__func__, mmal_ctrl, ctrl->id, ctrl->val, ret,
+			(ret == 0 ? 0 : -EINVAL));
+	return (ret == 0 ? 0 : EINVAL);
+}
+
+static int ctrl_set_bitrate(struct bm2835_mmal_dev *dev,
+		   struct v4l2_ctrl *ctrl,
+		   const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	int ret;
+	struct vchiq_mmal_port *encoder_out;
+
+	dev->capture.encode_bitrate = ctrl->val;
+
+	encoder_out = &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0];
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance, encoder_out,
+					    mmal_ctrl->mmal_id,
+					    &ctrl->val, sizeof(ctrl->val));
+	ret = 0;
+	return ret;
+}
+
+static int ctrl_set_bitrate_mode(struct bm2835_mmal_dev *dev,
+		   struct v4l2_ctrl *ctrl,
+		   const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	u32 bitrate_mode;
+	struct vchiq_mmal_port *encoder_out;
+
+	encoder_out = &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0];
+
+	dev->capture.encode_bitrate_mode = ctrl->val;
+	switch (ctrl->val) {
+	default:
+	case V4L2_MPEG_VIDEO_BITRATE_MODE_VBR:
+		bitrate_mode = MMAL_VIDEO_RATECONTROL_VARIABLE;
+		break;
+	case V4L2_MPEG_VIDEO_BITRATE_MODE_CBR:
+		bitrate_mode = MMAL_VIDEO_RATECONTROL_CONSTANT;
+		break;
+	}
+
+	vchiq_mmal_port_parameter_set(dev->instance, encoder_out,
+					     mmal_ctrl->mmal_id,
+					     &bitrate_mode,
+					     sizeof(bitrate_mode));
+	return 0;
+}
+
+static int ctrl_set_image_encode_output(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	u32 u32_value;
+	struct vchiq_mmal_port *jpeg_out;
+
+	jpeg_out = &dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->output[0];
+
+	u32_value = ctrl->val;
+
+	return vchiq_mmal_port_parameter_set(dev->instance, jpeg_out,
+					     mmal_ctrl->mmal_id,
+					     &u32_value, sizeof(u32_value));
+}
+
+static int ctrl_set_video_encode_param_output(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	u32 u32_value;
+	struct vchiq_mmal_port *vid_enc_ctl;
+
+	vid_enc_ctl = &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0];
+
+	u32_value = ctrl->val;
+
+	return vchiq_mmal_port_parameter_set(dev->instance, vid_enc_ctl,
+					     mmal_ctrl->mmal_id,
+					     &u32_value, sizeof(u32_value));
+}
+
+static int ctrl_set_video_encode_profile_level(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	struct mmal_parameter_video_profile param;
+	int ret = 0;
+
+	if (ctrl->id == V4L2_CID_MPEG_VIDEO_H264_PROFILE) {
+		switch (ctrl->val) {
+		case V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE:
+		case V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE:
+		case V4L2_MPEG_VIDEO_H264_PROFILE_MAIN:
+		case V4L2_MPEG_VIDEO_H264_PROFILE_HIGH:
+			dev->capture.enc_profile = ctrl->val;
+			break;
+		default:
+			ret = -EINVAL;
+			break;
+		}
+	} else if (ctrl->id == V4L2_CID_MPEG_VIDEO_H264_LEVEL) {
+		switch (ctrl->val) {
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1_0:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1B:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1_1:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1_2:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1_3:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_2_0:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_2_1:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_2_2:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_3_0:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_3_1:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_3_2:
+		case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
+			dev->capture.enc_level = ctrl->val;
+			break;
+		default:
+			ret = -EINVAL;
+			break;
+		}
+	}
+
+	if (!ret) {
+		switch (dev->capture.enc_profile) {
+		case V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE:
+			param.profile = MMAL_VIDEO_PROFILE_H264_BASELINE;
+			break;
+		case V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE:
+			param.profile =
+				MMAL_VIDEO_PROFILE_H264_CONSTRAINED_BASELINE;
+			break;
+		case V4L2_MPEG_VIDEO_H264_PROFILE_MAIN:
+			param.profile = MMAL_VIDEO_PROFILE_H264_MAIN;
+			break;
+		case V4L2_MPEG_VIDEO_H264_PROFILE_HIGH:
+			param.profile = MMAL_VIDEO_PROFILE_H264_HIGH;
+			break;
+		default:
+			/* Should never get here */
+			break;
+		}
+
+		switch (dev->capture.enc_level) {
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1_0:
+			param.level = MMAL_VIDEO_LEVEL_H264_1;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1B:
+			param.level = MMAL_VIDEO_LEVEL_H264_1b;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1_1:
+			param.level = MMAL_VIDEO_LEVEL_H264_11;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1_2:
+			param.level = MMAL_VIDEO_LEVEL_H264_12;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_1_3:
+			param.level = MMAL_VIDEO_LEVEL_H264_13;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_2_0:
+			param.level = MMAL_VIDEO_LEVEL_H264_2;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_2_1:
+			param.level = MMAL_VIDEO_LEVEL_H264_21;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_2_2:
+			param.level = MMAL_VIDEO_LEVEL_H264_22;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_3_0:
+			param.level = MMAL_VIDEO_LEVEL_H264_3;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_3_1:
+			param.level = MMAL_VIDEO_LEVEL_H264_31;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_3_2:
+			param.level = MMAL_VIDEO_LEVEL_H264_32;
+			break;
+		case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
+			param.level = MMAL_VIDEO_LEVEL_H264_4;
+			break;
+		default:
+			/* Should never get here */
+			break;
+		}
+
+		ret = vchiq_mmal_port_parameter_set(dev->instance,
+			&dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0],
+			mmal_ctrl->mmal_id,
+			&param, sizeof(param));
+	}
+	return ret;
+}
+
+static int ctrl_set_scene_mode(struct bm2835_mmal_dev *dev,
+		      struct v4l2_ctrl *ctrl,
+		      const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
+{
+	int ret = 0;
+	int shutter_speed;
+	struct vchiq_mmal_port *control;
+
+	v4l2_dbg(0, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		"scene mode selected %d, was %d\n", ctrl->val,
+		dev->scene_mode);
+	control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
+
+	if (ctrl->val == dev->scene_mode)
+		return 0;
+
+	if (ctrl->val == V4L2_SCENE_MODE_NONE) {
+		/* Restore all user selections */
+		dev->scene_mode = V4L2_SCENE_MODE_NONE;
+
+		if (dev->exposure_mode_user == MMAL_PARAM_EXPOSUREMODE_OFF)
+			shutter_speed = dev->manual_shutter_speed;
+		else
+			shutter_speed = 0;
+
+		v4l2_dbg(0, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			"%s: scene mode none: shut_speed %d, exp_mode %d, metering %d\n",
+			__func__, shutter_speed, dev->exposure_mode_user,
+			dev->metering_mode);
+		ret = vchiq_mmal_port_parameter_set(dev->instance,
+					control,
+					MMAL_PARAMETER_SHUTTER_SPEED,
+					&shutter_speed,
+					sizeof(shutter_speed));
+		ret += vchiq_mmal_port_parameter_set(dev->instance,
+					control,
+					MMAL_PARAMETER_EXPOSURE_MODE,
+					&dev->exposure_mode_user,
+					sizeof(u32));
+		dev->exposure_mode_active = dev->exposure_mode_user;
+		ret += vchiq_mmal_port_parameter_set(dev->instance,
+					control,
+					MMAL_PARAMETER_EXP_METERING_MODE,
+					&dev->metering_mode,
+					sizeof(u32));
+		ret += set_framerate_params(dev);
+	} else {
+		/* Set up scene mode */
+		int i;
+		const struct v4l2_mmal_scene_config *scene = NULL;
+		int shutter_speed;
+		enum mmal_parameter_exposuremode exposure_mode;
+		enum mmal_parameter_exposuremeteringmode metering_mode;
+
+		for (i = 0; i < ARRAY_SIZE(scene_configs); i++) {
+			if (scene_configs[i].v4l2_scene ==
+				ctrl->val) {
+				scene = &scene_configs[i];
+				break;
+			}
+		}
+		if (i >= ARRAY_SIZE(scene_configs))
+			return -EINVAL;
+
+		/* Set all the values */
+		dev->scene_mode = ctrl->val;
+
+		if (scene->exposure_mode == MMAL_PARAM_EXPOSUREMODE_OFF)
+			shutter_speed = dev->manual_shutter_speed;
+		else
+			shutter_speed = 0;
+		exposure_mode = scene->exposure_mode;
+		metering_mode = scene->metering_mode;
+
+		v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			"%s: scene mode none: shut_speed %d, exp_mode %d, metering %d\n",
+			__func__, shutter_speed, exposure_mode, metering_mode);
+
+		ret = vchiq_mmal_port_parameter_set(dev->instance, control,
+					MMAL_PARAMETER_SHUTTER_SPEED,
+					&shutter_speed,
+					sizeof(shutter_speed));
+		ret += vchiq_mmal_port_parameter_set(dev->instance,
+					control,
+					MMAL_PARAMETER_EXPOSURE_MODE,
+					&exposure_mode,
+					sizeof(u32));
+		dev->exposure_mode_active = exposure_mode;
+		ret += vchiq_mmal_port_parameter_set(dev->instance, control,
+					MMAL_PARAMETER_EXPOSURE_MODE,
+					&exposure_mode,
+					sizeof(u32));
+		ret += vchiq_mmal_port_parameter_set(dev->instance, control,
+					MMAL_PARAMETER_EXP_METERING_MODE,
+					&metering_mode,
+					sizeof(u32));
+		ret += set_framerate_params(dev);
+	}
+	if (ret) {
+		v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			"%s: Setting scene to %d, ret=%d\n",
+			__func__, ctrl->val, ret);
+		ret = -EINVAL;
+	}
+	return 0;
+}
+
+static int bm2835_mmal_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct bm2835_mmal_dev *dev =
+		container_of(ctrl->handler, struct bm2835_mmal_dev,
+			     ctrl_handler);
+	const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl = ctrl->priv;
+	int ret;
+
+	if ((mmal_ctrl == NULL) ||
+	    (mmal_ctrl->id != ctrl->id) ||
+	    (mmal_ctrl->setter == NULL)) {
+		pr_warn("mmal_ctrl:%p ctrl id:%d\n", mmal_ctrl, ctrl->id);
+		return -EINVAL;
+	}
+
+	ret = mmal_ctrl->setter(dev, ctrl, mmal_ctrl);
+	if (ret)
+		pr_warn("ctrl id:%d/MMAL param %08X- returned ret %d\n",
+				ctrl->id, mmal_ctrl->mmal_id, ret);
+	if (mmal_ctrl->ignore_errors)
+		ret = 0;
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops bm2835_mmal_ctrl_ops = {
+	.s_ctrl = bm2835_mmal_s_ctrl,
+};
+
+
+
+static const struct bm2835_mmal_v4l2_ctrl v4l2_ctrls[V4L2_CTRL_COUNT] = {
+	{
+		V4L2_CID_SATURATION, MMAL_CONTROL_TYPE_STD,
+		-100, 100, 0, 1, NULL,
+		MMAL_PARAMETER_SATURATION,
+		&ctrl_set_rational,
+		false
+	},
+	{
+		V4L2_CID_SHARPNESS, MMAL_CONTROL_TYPE_STD,
+		-100, 100, 0, 1, NULL,
+		MMAL_PARAMETER_SHARPNESS,
+		&ctrl_set_rational,
+		false
+	},
+	{
+		V4L2_CID_CONTRAST, MMAL_CONTROL_TYPE_STD,
+		-100, 100, 0, 1, NULL,
+		MMAL_PARAMETER_CONTRAST,
+		&ctrl_set_rational,
+		false
+	},
+	{
+		V4L2_CID_BRIGHTNESS, MMAL_CONTROL_TYPE_STD,
+		0, 100, 50, 1, NULL,
+		MMAL_PARAMETER_BRIGHTNESS,
+		&ctrl_set_rational,
+		false
+	},
+	{
+		V4L2_CID_ISO_SENSITIVITY, MMAL_CONTROL_TYPE_INT_MENU,
+		0, ARRAY_SIZE(iso_qmenu) - 1, 0, 1, iso_qmenu,
+		MMAL_PARAMETER_ISO,
+		&ctrl_set_value_menu,
+		false
+	},
+	{
+		V4L2_CID_IMAGE_STABILIZATION, MMAL_CONTROL_TYPE_STD,
+		0, 1, 0, 1, NULL,
+		MMAL_PARAMETER_VIDEO_STABILISATION,
+		&ctrl_set_value,
+		false
+	},
+/*	{
+		0, MMAL_CONTROL_TYPE_CLUSTER, 3, 1, 0, NULL, 0, NULL
+	}, */
+	{
+		V4L2_CID_EXPOSURE_AUTO, MMAL_CONTROL_TYPE_STD_MENU,
+		~0x03, 3, V4L2_EXPOSURE_AUTO, 0, NULL,
+		MMAL_PARAMETER_EXPOSURE_MODE,
+		&ctrl_set_exposure,
+		false
+	},
+/* todo this needs mixing in with set exposure
+	{
+	       V4L2_CID_SCENE_MODE, MMAL_CONTROL_TYPE_STD_MENU,
+	},
+ */
+	{
+		V4L2_CID_EXPOSURE_ABSOLUTE, MMAL_CONTROL_TYPE_STD,
+		/* Units of 100usecs */
+		1, 1*1000*10, 100*10, 1, NULL,
+		MMAL_PARAMETER_SHUTTER_SPEED,
+		&ctrl_set_exposure,
+		false
+	},
+	{
+		V4L2_CID_AUTO_EXPOSURE_BIAS, MMAL_CONTROL_TYPE_INT_MENU,
+		0, ARRAY_SIZE(ev_bias_qmenu) - 1,
+		(ARRAY_SIZE(ev_bias_qmenu)+1)/2 - 1, 0, ev_bias_qmenu,
+		MMAL_PARAMETER_EXPOSURE_COMP,
+		&ctrl_set_value_ev,
+		false
+	},
+	{
+		V4L2_CID_EXPOSURE_AUTO_PRIORITY, MMAL_CONTROL_TYPE_STD,
+		0, 1,
+		0, 1, NULL,
+		0,	/* Dummy MMAL ID as it gets mapped into FPS range*/
+		&ctrl_set_exposure,
+		false
+	},
+	{
+		V4L2_CID_EXPOSURE_METERING,
+		MMAL_CONTROL_TYPE_STD_MENU,
+		~0x7, 2, V4L2_EXPOSURE_METERING_AVERAGE, 0, NULL,
+		MMAL_PARAMETER_EXP_METERING_MODE,
+		&ctrl_set_metering_mode,
+		false
+	},
+	{
+		V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE,
+		MMAL_CONTROL_TYPE_STD_MENU,
+		~0x3ff, 9, V4L2_WHITE_BALANCE_AUTO, 0, NULL,
+		MMAL_PARAMETER_AWB_MODE,
+		&ctrl_set_awb_mode,
+		false
+	},
+	{
+		V4L2_CID_RED_BALANCE, MMAL_CONTROL_TYPE_STD,
+		1, 7999, 1000, 1, NULL,
+		MMAL_PARAMETER_CUSTOM_AWB_GAINS,
+		&ctrl_set_awb_gains,
+		false
+	},
+	{
+		V4L2_CID_BLUE_BALANCE, MMAL_CONTROL_TYPE_STD,
+		1, 7999, 1000, 1, NULL,
+		MMAL_PARAMETER_CUSTOM_AWB_GAINS,
+		&ctrl_set_awb_gains,
+		false
+	},
+	{
+		V4L2_CID_COLORFX, MMAL_CONTROL_TYPE_STD_MENU,
+		0, 15, V4L2_COLORFX_NONE, 0, NULL,
+		MMAL_PARAMETER_IMAGE_EFFECT,
+		&ctrl_set_image_effect,
+		false
+	},
+	{
+		V4L2_CID_COLORFX_CBCR, MMAL_CONTROL_TYPE_STD,
+		0, 0xffff, 0x8080, 1, NULL,
+		MMAL_PARAMETER_COLOUR_EFFECT,
+		&ctrl_set_colfx,
+		false
+	},
+	{
+		V4L2_CID_ROTATE, MMAL_CONTROL_TYPE_STD,
+		0, 360, 0, 90, NULL,
+		MMAL_PARAMETER_ROTATION,
+		&ctrl_set_rotate,
+		false
+	},
+	{
+		V4L2_CID_HFLIP, MMAL_CONTROL_TYPE_STD,
+		0, 1, 0, 1, NULL,
+		MMAL_PARAMETER_MIRROR,
+		&ctrl_set_flip,
+		false
+	},
+	{
+		V4L2_CID_VFLIP, MMAL_CONTROL_TYPE_STD,
+		0, 1, 0, 1, NULL,
+		MMAL_PARAMETER_MIRROR,
+		&ctrl_set_flip,
+		false
+	},
+	{
+		V4L2_CID_MPEG_VIDEO_BITRATE_MODE, MMAL_CONTROL_TYPE_STD_MENU,
+		0, ARRAY_SIZE(bitrate_mode_qmenu) - 1,
+		0, 0, bitrate_mode_qmenu,
+		MMAL_PARAMETER_RATECONTROL,
+		&ctrl_set_bitrate_mode,
+		false
+	},
+	{
+		V4L2_CID_MPEG_VIDEO_BITRATE, MMAL_CONTROL_TYPE_STD,
+		25*1000, 25*1000*1000, 10*1000*1000, 25*1000, NULL,
+		MMAL_PARAMETER_VIDEO_BIT_RATE,
+		&ctrl_set_bitrate,
+		false
+	},
+	{
+		V4L2_CID_JPEG_COMPRESSION_QUALITY, MMAL_CONTROL_TYPE_STD,
+		1, 100,
+		30, 1, NULL,
+		MMAL_PARAMETER_JPEG_Q_FACTOR,
+		&ctrl_set_image_encode_output,
+		false
+	},
+	{
+		V4L2_CID_POWER_LINE_FREQUENCY, MMAL_CONTROL_TYPE_STD_MENU,
+		0, ARRAY_SIZE(mains_freq_qmenu) - 1,
+		1, 1, NULL,
+		MMAL_PARAMETER_FLICKER_AVOID,
+		&ctrl_set_flicker_avoidance,
+		false
+	},
+	{
+		V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER, MMAL_CONTROL_TYPE_STD,
+		0, 1,
+		0, 1, NULL,
+		MMAL_PARAMETER_VIDEO_ENCODE_INLINE_HEADER,
+		&ctrl_set_video_encode_param_output,
+		true	/* Errors ignored as requires latest firmware to work */
+	},
+	{
+		V4L2_CID_MPEG_VIDEO_H264_PROFILE,
+		MMAL_CONTROL_TYPE_STD_MENU,
+		~((1<<V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
+			(1<<V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE) |
+			(1<<V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
+			(1<<V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
+		V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
+		V4L2_MPEG_VIDEO_H264_PROFILE_HIGH, 1, NULL,
+		MMAL_PARAMETER_PROFILE,
+		&ctrl_set_video_encode_profile_level,
+		false
+	},
+	{
+		V4L2_CID_MPEG_VIDEO_H264_LEVEL, MMAL_CONTROL_TYPE_STD_MENU,
+		~((1<<V4L2_MPEG_VIDEO_H264_LEVEL_1_0) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_1B) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_1_1) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_1_2) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_1_3) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_2_1) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_2_2) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
+			(1<<V4L2_MPEG_VIDEO_H264_LEVEL_4_0)),
+		V4L2_MPEG_VIDEO_H264_LEVEL_4_0,
+		V4L2_MPEG_VIDEO_H264_LEVEL_4_0, 1, NULL,
+		MMAL_PARAMETER_PROFILE,
+		&ctrl_set_video_encode_profile_level,
+		false
+	},
+	{
+		V4L2_CID_SCENE_MODE, MMAL_CONTROL_TYPE_STD_MENU,
+		-1,	/* Min is computed at runtime */
+		V4L2_SCENE_MODE_TEXT,
+		V4L2_SCENE_MODE_NONE, 1, NULL,
+		MMAL_PARAMETER_PROFILE,
+		&ctrl_set_scene_mode,
+		false
+	},
+	{
+		V4L2_CID_MPEG_VIDEO_H264_I_PERIOD, MMAL_CONTROL_TYPE_STD,
+		0, 0x7FFFFFFF, 60, 1, NULL,
+		MMAL_PARAMETER_INTRAPERIOD,
+		&ctrl_set_video_encode_param_output,
+		false
+	},
+};
+
+int bm2835_mmal_set_all_camera_controls(struct bm2835_mmal_dev *dev)
+{
+	int c;
+	int ret = 0;
+
+	for (c = 0; c < V4L2_CTRL_COUNT; c++) {
+		if ((dev->ctrls[c]) && (v4l2_ctrls[c].setter)) {
+			ret = v4l2_ctrls[c].setter(dev, dev->ctrls[c],
+						   &v4l2_ctrls[c]);
+			if (!v4l2_ctrls[c].ignore_errors && ret) {
+				v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+					"Failed when setting default values for ctrl %d\n",
+					c);
+				break;
+			}
+		}
+	}
+	return ret;
+}
+
+int set_framerate_params(struct bm2835_mmal_dev *dev)
+{
+	struct mmal_parameter_fps_range fps_range;
+	int ret;
+
+	if ((dev->exposure_mode_active != MMAL_PARAM_EXPOSUREMODE_OFF) &&
+	     (dev->exp_auto_priority)) {
+		/* Variable FPS. Define min FPS as 1fps.
+		 * Max as max defined FPS.
+		 */
+		fps_range.fps_low.num = 1;
+		fps_range.fps_low.den = 1;
+		fps_range.fps_high.num = dev->capture.timeperframe.denominator;
+		fps_range.fps_high.den = dev->capture.timeperframe.numerator;
+	} else {
+		/* Fixed FPS - set min and max to be the same */
+		fps_range.fps_low.num = fps_range.fps_high.num =
+			dev->capture.timeperframe.denominator;
+		fps_range.fps_low.den = fps_range.fps_high.den =
+			dev->capture.timeperframe.numerator;
+	}
+
+	v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
+			 "Set fps range to %d/%d to %d/%d\n",
+			 fps_range.fps_low.num,
+			 fps_range.fps_low.den,
+			 fps_range.fps_high.num,
+			 fps_range.fps_high.den
+		 );
+
+	ret = vchiq_mmal_port_parameter_set(dev->instance,
+				      &dev->component[MMAL_COMPONENT_CAMERA]->
+					output[MMAL_CAMERA_PORT_PREVIEW],
+				      MMAL_PARAMETER_FPS_RANGE,
+				      &fps_range, sizeof(fps_range));
+	ret += vchiq_mmal_port_parameter_set(dev->instance,
+				      &dev->component[MMAL_COMPONENT_CAMERA]->
+					output[MMAL_CAMERA_PORT_VIDEO],
+				      MMAL_PARAMETER_FPS_RANGE,
+				      &fps_range, sizeof(fps_range));
+	ret += vchiq_mmal_port_parameter_set(dev->instance,
+				      &dev->component[MMAL_COMPONENT_CAMERA]->
+					output[MMAL_CAMERA_PORT_CAPTURE],
+				      MMAL_PARAMETER_FPS_RANGE,
+				      &fps_range, sizeof(fps_range));
+	if (ret)
+		v4l2_dbg(0, bcm2835_v4l2_debug, &dev->v4l2_dev,
+		 "Failed to set fps ret %d\n",
+		 ret);
+
+	return ret;
+
+}
+
+int bm2835_mmal_init_controls(struct bm2835_mmal_dev *dev,
+			      struct v4l2_ctrl_handler *hdl)
+{
+	int c;
+	const struct bm2835_mmal_v4l2_ctrl *ctrl;
+
+	v4l2_ctrl_handler_init(hdl, V4L2_CTRL_COUNT);
+
+	for (c = 0; c < V4L2_CTRL_COUNT; c++) {
+		ctrl = &v4l2_ctrls[c];
+
+		switch (ctrl->type) {
+		case MMAL_CONTROL_TYPE_STD:
+			dev->ctrls[c] = v4l2_ctrl_new_std(hdl,
+				&bm2835_mmal_ctrl_ops, ctrl->id,
+				ctrl->min, ctrl->max, ctrl->step, ctrl->def);
+			break;
+
+		case MMAL_CONTROL_TYPE_STD_MENU:
+		{
+			int mask = ctrl->min;
+
+			if (ctrl->id == V4L2_CID_SCENE_MODE) {
+				/* Special handling to work out the mask
+				 * value based on the scene_configs array
+				 * at runtime. Reduces the chance of
+				 * mismatches.
+				 */
+				int i;
+				mask = 1<<V4L2_SCENE_MODE_NONE;
+				for (i = 0;
+				     i < ARRAY_SIZE(scene_configs);
+				     i++) {
+					mask |= 1<<scene_configs[i].v4l2_scene;
+				}
+				mask = ~mask;
+			}
+
+			dev->ctrls[c] = v4l2_ctrl_new_std_menu(hdl,
+			&bm2835_mmal_ctrl_ops, ctrl->id,
+			ctrl->max, mask, ctrl->def);
+			break;
+		}
+
+		case MMAL_CONTROL_TYPE_INT_MENU:
+			dev->ctrls[c] = v4l2_ctrl_new_int_menu(hdl,
+				&bm2835_mmal_ctrl_ops, ctrl->id,
+				ctrl->max, ctrl->def, ctrl->imenu);
+			break;
+
+		case MMAL_CONTROL_TYPE_CLUSTER:
+			/* skip this entry when constructing controls */
+			continue;
+		}
+
+		if (hdl->error)
+			break;
+
+		dev->ctrls[c]->priv = (void *)ctrl;
+	}
+
+	if (hdl->error) {
+		pr_err("error adding control %d/%d id 0x%x\n", c,
+			 V4L2_CTRL_COUNT, ctrl->id);
+		return hdl->error;
+	}
+
+	for (c = 0; c < V4L2_CTRL_COUNT; c++) {
+		ctrl = &v4l2_ctrls[c];
+
+		switch (ctrl->type) {
+		case MMAL_CONTROL_TYPE_CLUSTER:
+			v4l2_ctrl_auto_cluster(ctrl->min,
+					       &dev->ctrls[c+1],
+					       ctrl->max,
+					       ctrl->def);
+			break;
+
+		case MMAL_CONTROL_TYPE_STD:
+		case MMAL_CONTROL_TYPE_STD_MENU:
+		case MMAL_CONTROL_TYPE_INT_MENU:
+			break;
+		}
+
+	}
+
+	return 0;
+}
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/Kconfig linux-rpi/drivers/media/platform/bcm2835/Kconfig
--- linux-3.18.10/drivers/media/platform/bcm2835/Kconfig	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/Kconfig	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,25 @@
+# Broadcom VideoCore IV v4l2 camera support
+
+config VIDEO_BCM2835
+	bool "Broadcom BCM2835 camera interface driver"
+	depends on VIDEO_V4L2 && (ARCH_BCM2708 || ARCH_BCM2709)
+	---help---
+	  Say Y here to enable camera host interface devices for
+	  Broadcom BCM2835 SoC. This operates over the VCHIQ interface
+	  to a service running on VideoCore.
+
+
+if VIDEO_BCM2835
+
+config VIDEO_BCM2835_MMAL
+	tristate "Broadcom BM2835 MMAL camera interface driver"
+	depends on BCM2708_VCHIQ
+	select VIDEOBUF2_VMALLOC
+	---help---
+	  This is a V4L2 driver for the Broadcom BCM2835 MMAL camera host interface
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called bcm2835-v4l2.o
+
+
+endif # VIDEO_BM2835
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/Makefile linux-rpi/drivers/media/platform/bcm2835/Makefile
--- linux-3.18.10/drivers/media/platform/bcm2835/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/Makefile	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,5 @@
+bcm2835-v4l2-objs := bcm2835-camera.o controls.o mmal-vchiq.o
+
+obj-$(CONFIG_VIDEO_BCM2835_MMAL) += bcm2835-v4l2.o
+
+ccflags-$(CONFIG_VIDEO_BCM2835) += -Idrivers/misc/vc04_services -Idrivers/misc/vc04_services/interface/vcos/linuxkernel -D__VCCOREVER__=0x04000000
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/mmal-common.h linux-rpi/drivers/media/platform/bcm2835/mmal-common.h
--- linux-3.18.10/drivers/media/platform/bcm2835/mmal-common.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/mmal-common.h	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,53 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ *
+ * MMAL structures
+ *
+ */
+
+#define MMAL_FOURCC(a, b, c, d) ((a) | (b << 8) | (c << 16) | (d << 24))
+#define MMAL_MAGIC MMAL_FOURCC('m', 'm', 'a', 'l')
+
+/** Special value signalling that time is not known */
+#define MMAL_TIME_UNKNOWN (1LL<<63)
+
+/* mapping between v4l and mmal video modes */
+struct mmal_fmt {
+	char  *name;
+	u32   fourcc;          /* v4l2 format id */
+	int   flags;           /* v4l2 flags field */
+	u32   mmal;
+	int   depth;
+	u32   mmal_component;  /* MMAL component index to be used to encode */
+};
+
+/* buffer for one video frame */
+struct mmal_buffer {
+	/* v4l buffer data -- must be first */
+	struct vb2_buffer	vb;
+
+	/* list of buffers available */
+	struct list_head	list;
+
+	void *buffer; /* buffer pointer */
+	unsigned long buffer_size; /* size of allocated buffer */
+};
+
+/* */
+struct mmal_colourfx {
+	s32 enable;
+	u32 u;
+	u32 v;
+};
+
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/mmal-encodings.h linux-rpi/drivers/media/platform/bcm2835/mmal-encodings.h
--- linux-3.18.10/drivers/media/platform/bcm2835/mmal-encodings.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/mmal-encodings.h	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,127 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ */
+#ifndef MMAL_ENCODINGS_H
+#define MMAL_ENCODINGS_H
+
+#define MMAL_ENCODING_H264             MMAL_FOURCC('H', '2', '6', '4')
+#define MMAL_ENCODING_H263             MMAL_FOURCC('H', '2', '6', '3')
+#define MMAL_ENCODING_MP4V             MMAL_FOURCC('M', 'P', '4', 'V')
+#define MMAL_ENCODING_MP2V             MMAL_FOURCC('M', 'P', '2', 'V')
+#define MMAL_ENCODING_MP1V             MMAL_FOURCC('M', 'P', '1', 'V')
+#define MMAL_ENCODING_WMV3             MMAL_FOURCC('W', 'M', 'V', '3')
+#define MMAL_ENCODING_WMV2             MMAL_FOURCC('W', 'M', 'V', '2')
+#define MMAL_ENCODING_WMV1             MMAL_FOURCC('W', 'M', 'V', '1')
+#define MMAL_ENCODING_WVC1             MMAL_FOURCC('W', 'V', 'C', '1')
+#define MMAL_ENCODING_VP8              MMAL_FOURCC('V', 'P', '8', ' ')
+#define MMAL_ENCODING_VP7              MMAL_FOURCC('V', 'P', '7', ' ')
+#define MMAL_ENCODING_VP6              MMAL_FOURCC('V', 'P', '6', ' ')
+#define MMAL_ENCODING_THEORA           MMAL_FOURCC('T', 'H', 'E', 'O')
+#define MMAL_ENCODING_SPARK            MMAL_FOURCC('S', 'P', 'R', 'K')
+#define MMAL_ENCODING_MJPEG            MMAL_FOURCC('M', 'J', 'P', 'G')
+
+#define MMAL_ENCODING_JPEG             MMAL_FOURCC('J', 'P', 'E', 'G')
+#define MMAL_ENCODING_GIF              MMAL_FOURCC('G', 'I', 'F', ' ')
+#define MMAL_ENCODING_PNG              MMAL_FOURCC('P', 'N', 'G', ' ')
+#define MMAL_ENCODING_PPM              MMAL_FOURCC('P', 'P', 'M', ' ')
+#define MMAL_ENCODING_TGA              MMAL_FOURCC('T', 'G', 'A', ' ')
+#define MMAL_ENCODING_BMP              MMAL_FOURCC('B', 'M', 'P', ' ')
+
+#define MMAL_ENCODING_I420             MMAL_FOURCC('I', '4', '2', '0')
+#define MMAL_ENCODING_I420_SLICE       MMAL_FOURCC('S', '4', '2', '0')
+#define MMAL_ENCODING_YV12             MMAL_FOURCC('Y', 'V', '1', '2')
+#define MMAL_ENCODING_I422             MMAL_FOURCC('I', '4', '2', '2')
+#define MMAL_ENCODING_I422_SLICE       MMAL_FOURCC('S', '4', '2', '2')
+#define MMAL_ENCODING_YUYV             MMAL_FOURCC('Y', 'U', 'Y', 'V')
+#define MMAL_ENCODING_YVYU             MMAL_FOURCC('Y', 'V', 'Y', 'U')
+#define MMAL_ENCODING_UYVY             MMAL_FOURCC('U', 'Y', 'V', 'Y')
+#define MMAL_ENCODING_VYUY             MMAL_FOURCC('V', 'Y', 'U', 'Y')
+#define MMAL_ENCODING_NV12             MMAL_FOURCC('N', 'V', '1', '2')
+#define MMAL_ENCODING_NV21             MMAL_FOURCC('N', 'V', '2', '1')
+#define MMAL_ENCODING_ARGB             MMAL_FOURCC('A', 'R', 'G', 'B')
+#define MMAL_ENCODING_RGBA             MMAL_FOURCC('R', 'G', 'B', 'A')
+#define MMAL_ENCODING_ABGR             MMAL_FOURCC('A', 'B', 'G', 'R')
+#define MMAL_ENCODING_BGRA             MMAL_FOURCC('B', 'G', 'R', 'A')
+#define MMAL_ENCODING_RGB16            MMAL_FOURCC('R', 'G', 'B', '2')
+#define MMAL_ENCODING_RGB24            MMAL_FOURCC('R', 'G', 'B', '3')
+#define MMAL_ENCODING_RGB32            MMAL_FOURCC('R', 'G', 'B', '4')
+#define MMAL_ENCODING_BGR16            MMAL_FOURCC('B', 'G', 'R', '2')
+#define MMAL_ENCODING_BGR24            MMAL_FOURCC('B', 'G', 'R', '3')
+#define MMAL_ENCODING_BGR32            MMAL_FOURCC('B', 'G', 'R', '4')
+
+/** SAND Video (YUVUV128) format, native format understood by VideoCore.
+ * This format is *not* opaque - if requested you will receive full frames
+ * of YUV_UV video.
+ */
+#define MMAL_ENCODING_YUVUV128         MMAL_FOURCC('S', 'A', 'N', 'D')
+
+/** VideoCore opaque image format, image handles are returned to
+ * the host but not the actual image data.
+ */
+#define MMAL_ENCODING_OPAQUE           MMAL_FOURCC('O', 'P', 'Q', 'V')
+
+/** An EGL image handle
+ */
+#define MMAL_ENCODING_EGL_IMAGE        MMAL_FOURCC('E', 'G', 'L', 'I')
+
+/* }@ */
+
+/** \name Pre-defined audio encodings */
+/* @{ */
+#define MMAL_ENCODING_PCM_UNSIGNED_BE  MMAL_FOURCC('P', 'C', 'M', 'U')
+#define MMAL_ENCODING_PCM_UNSIGNED_LE  MMAL_FOURCC('p', 'c', 'm', 'u')
+#define MMAL_ENCODING_PCM_SIGNED_BE    MMAL_FOURCC('P', 'C', 'M', 'S')
+#define MMAL_ENCODING_PCM_SIGNED_LE    MMAL_FOURCC('p', 'c', 'm', 's')
+#define MMAL_ENCODING_PCM_FLOAT_BE     MMAL_FOURCC('P', 'C', 'M', 'F')
+#define MMAL_ENCODING_PCM_FLOAT_LE     MMAL_FOURCC('p', 'c', 'm', 'f')
+
+/* Pre-defined H264 encoding variants */
+
+/** ISO 14496-10 Annex B byte stream format */
+#define MMAL_ENCODING_VARIANT_H264_DEFAULT   0
+/** ISO 14496-15 AVC stream format */
+#define MMAL_ENCODING_VARIANT_H264_AVC1      MMAL_FOURCC('A', 'V', 'C', '1')
+/** Implicitly delineated NAL units without emulation prevention */
+#define MMAL_ENCODING_VARIANT_H264_RAW       MMAL_FOURCC('R', 'A', 'W', ' ')
+
+
+/** \defgroup MmalColorSpace List of pre-defined video color spaces
+ * This defines a list of common color spaces. This list isn't exhaustive and
+ * is only provided as a convenience to avoid clients having to use FourCC
+ * codes directly. However components are allowed to define and use their own
+ * FourCC codes.
+ */
+/* @{ */
+
+/** Unknown color space */
+#define MMAL_COLOR_SPACE_UNKNOWN       0
+/** ITU-R BT.601-5 [SDTV] */
+#define MMAL_COLOR_SPACE_ITUR_BT601    MMAL_FOURCC('Y', '6', '0', '1')
+/** ITU-R BT.709-3 [HDTV] */
+#define MMAL_COLOR_SPACE_ITUR_BT709    MMAL_FOURCC('Y', '7', '0', '9')
+/** JPEG JFIF */
+#define MMAL_COLOR_SPACE_JPEG_JFIF     MMAL_FOURCC('Y', 'J', 'F', 'I')
+/** Title 47 Code of Federal Regulations (2003) 73.682 (a) (20) */
+#define MMAL_COLOR_SPACE_FCC           MMAL_FOURCC('Y', 'F', 'C', 'C')
+/** Society of Motion Picture and Television Engineers 240M (1999) */
+#define MMAL_COLOR_SPACE_SMPTE240M     MMAL_FOURCC('Y', '2', '4', '0')
+/** ITU-R BT.470-2 System M */
+#define MMAL_COLOR_SPACE_BT470_2_M     MMAL_FOURCC('Y', '_', '_', 'M')
+/** ITU-R BT.470-2 System BG */
+#define MMAL_COLOR_SPACE_BT470_2_BG    MMAL_FOURCC('Y', '_', 'B', 'G')
+/** JPEG JFIF, but with 16..255 luma */
+#define MMAL_COLOR_SPACE_JFIF_Y16_255  MMAL_FOURCC('Y', 'Y', '1', '6')
+/* @} MmalColorSpace List */
+
+#endif /* MMAL_ENCODINGS_H */
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/mmal-msg-common.h linux-rpi/drivers/media/platform/bcm2835/mmal-msg-common.h
--- linux-3.18.10/drivers/media/platform/bcm2835/mmal-msg-common.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/mmal-msg-common.h	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,50 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ */
+
+#ifndef MMAL_MSG_COMMON_H
+#define MMAL_MSG_COMMON_H
+
+enum mmal_msg_status {
+	MMAL_MSG_STATUS_SUCCESS = 0, /**< Success */
+	MMAL_MSG_STATUS_ENOMEM,      /**< Out of memory */
+	MMAL_MSG_STATUS_ENOSPC,      /**< Out of resources other than memory */
+	MMAL_MSG_STATUS_EINVAL,      /**< Argument is invalid */
+	MMAL_MSG_STATUS_ENOSYS,      /**< Function not implemented */
+	MMAL_MSG_STATUS_ENOENT,      /**< No such file or directory */
+	MMAL_MSG_STATUS_ENXIO,       /**< No such device or address */
+	MMAL_MSG_STATUS_EIO,         /**< I/O error */
+	MMAL_MSG_STATUS_ESPIPE,      /**< Illegal seek */
+	MMAL_MSG_STATUS_ECORRUPT,    /**< Data is corrupt \attention */
+	MMAL_MSG_STATUS_ENOTREADY,   /**< Component is not ready */
+	MMAL_MSG_STATUS_ECONFIG,     /**< Component is not configured */
+	MMAL_MSG_STATUS_EISCONN,     /**< Port is already connected */
+	MMAL_MSG_STATUS_ENOTCONN,    /**< Port is disconnected */
+	MMAL_MSG_STATUS_EAGAIN,      /**< Resource temporarily unavailable. */
+	MMAL_MSG_STATUS_EFAULT,      /**< Bad address */
+};
+
+struct mmal_rect {
+	s32 x;      /**< x coordinate (from left) */
+	s32 y;      /**< y coordinate (from top) */
+	s32 width;  /**< width */
+	s32 height; /**< height */
+};
+
+struct mmal_rational {
+	s32 num;    /**< Numerator */
+	s32 den;    /**< Denominator */
+};
+
+#endif /* MMAL_MSG_COMMON_H */
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/mmal-msg-format.h linux-rpi/drivers/media/platform/bcm2835/mmal-msg-format.h
--- linux-3.18.10/drivers/media/platform/bcm2835/mmal-msg-format.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/mmal-msg-format.h	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,81 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ */
+
+#ifndef MMAL_MSG_FORMAT_H
+#define MMAL_MSG_FORMAT_H
+
+#include "mmal-msg-common.h"
+
+/* MMAL_ES_FORMAT_T */
+
+
+struct mmal_audio_format {
+	u32 channels;           /**< Number of audio channels */
+	u32 sample_rate;        /**< Sample rate */
+
+	u32 bits_per_sample;    /**< Bits per sample */
+	u32 block_align;        /**< Size of a block of data */
+};
+
+struct mmal_video_format {
+	u32 width;        /**< Width of frame in pixels */
+	u32 height;       /**< Height of frame in rows of pixels */
+	struct mmal_rect crop;         /**< Visible region of the frame */
+	struct mmal_rational frame_rate;   /**< Frame rate */
+	struct mmal_rational par;          /**< Pixel aspect ratio */
+
+	/* FourCC specifying the color space of the video stream. See the
+	 * \ref MmalColorSpace "pre-defined color spaces" for some examples.
+	 */
+	u32 color_space;
+};
+
+struct mmal_subpicture_format {
+	u32 x_offset;
+	u32 y_offset;
+};
+
+union mmal_es_specific_format {
+	struct mmal_audio_format audio;
+	struct mmal_video_format video;
+	struct mmal_subpicture_format subpicture;
+};
+
+/** Definition of an elementary stream format (MMAL_ES_FORMAT_T) */
+struct mmal_es_format {
+	u32 type;      /* enum mmal_es_type */
+
+	u32 encoding;  /* FourCC specifying encoding of the elementary stream.*/
+	u32 encoding_variant; /* FourCC specifying the specific
+			       * encoding variant of the elementary
+			       * stream.
+			       */
+
+	union mmal_es_specific_format *es; /* TODO: pointers in
+					    * message serialisation?!?
+					    */
+					    /* Type specific
+					     * information for the
+					     * elementary stream
+					     */
+
+	u32 bitrate;        /**< Bitrate in bits per second */
+	u32 flags; /**< Flags describing properties of the elementary stream. */
+
+	u32 extradata_size;       /**< Size of the codec specific data */
+	u8  *extradata;           /**< Codec specific data */
+};
+
+#endif /* MMAL_MSG_FORMAT_H */
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/mmal-msg.h linux-rpi/drivers/media/platform/bcm2835/mmal-msg.h
--- linux-3.18.10/drivers/media/platform/bcm2835/mmal-msg.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/mmal-msg.h	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,404 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ */
+
+/* all the data structures which serialise the MMAL protocol. note
+ * these are directly mapped onto the recived message data.
+ *
+ * BEWARE: They seem to *assume* pointers are u32 and that there is no
+ * structure padding!
+ *
+ * NOTE: this implementation uses kernel types to ensure sizes. Rather
+ * than assigning values to enums to force their size the
+ * implementation uses fixed size types and not the enums (though the
+ * comments have the actual enum type
+ */
+
+#define VC_MMAL_VER 15
+#define VC_MMAL_MIN_VER 10
+#define VC_MMAL_SERVER_NAME  MAKE_FOURCC("mmal")
+
+/* max total message size is 512 bytes */
+#define MMAL_MSG_MAX_SIZE 512
+/* with six 32bit header elements max payload is therefore 488 bytes */
+#define MMAL_MSG_MAX_PAYLOAD 488
+
+#include "mmal-msg-common.h"
+#include "mmal-msg-format.h"
+#include "mmal-msg-port.h"
+
+enum mmal_msg_type {
+	MMAL_MSG_TYPE_QUIT = 1,
+	MMAL_MSG_TYPE_SERVICE_CLOSED,
+	MMAL_MSG_TYPE_GET_VERSION,
+	MMAL_MSG_TYPE_COMPONENT_CREATE,
+	MMAL_MSG_TYPE_COMPONENT_DESTROY, /* 5 */
+	MMAL_MSG_TYPE_COMPONENT_ENABLE,
+	MMAL_MSG_TYPE_COMPONENT_DISABLE,
+	MMAL_MSG_TYPE_PORT_INFO_GET,
+	MMAL_MSG_TYPE_PORT_INFO_SET,
+	MMAL_MSG_TYPE_PORT_ACTION, /* 10 */
+	MMAL_MSG_TYPE_BUFFER_FROM_HOST,
+	MMAL_MSG_TYPE_BUFFER_TO_HOST,
+	MMAL_MSG_TYPE_GET_STATS,
+	MMAL_MSG_TYPE_PORT_PARAMETER_SET,
+	MMAL_MSG_TYPE_PORT_PARAMETER_GET, /* 15 */
+	MMAL_MSG_TYPE_EVENT_TO_HOST,
+	MMAL_MSG_TYPE_GET_CORE_STATS_FOR_PORT,
+	MMAL_MSG_TYPE_OPAQUE_ALLOCATOR,
+	MMAL_MSG_TYPE_CONSUME_MEM,
+	MMAL_MSG_TYPE_LMK, /* 20 */
+	MMAL_MSG_TYPE_OPAQUE_ALLOCATOR_DESC,
+	MMAL_MSG_TYPE_DRM_GET_LHS32,
+	MMAL_MSG_TYPE_DRM_GET_TIME,
+	MMAL_MSG_TYPE_BUFFER_FROM_HOST_ZEROLEN,
+	MMAL_MSG_TYPE_PORT_FLUSH, /* 25 */
+	MMAL_MSG_TYPE_HOST_LOG,
+	MMAL_MSG_TYPE_MSG_LAST
+};
+
+/* port action request messages differ depending on the action type */
+enum mmal_msg_port_action_type {
+	MMAL_MSG_PORT_ACTION_TYPE_UNKNOWN = 0,      /* Unkown action */
+	MMAL_MSG_PORT_ACTION_TYPE_ENABLE,           /* Enable a port */
+	MMAL_MSG_PORT_ACTION_TYPE_DISABLE,          /* Disable a port */
+	MMAL_MSG_PORT_ACTION_TYPE_FLUSH,            /* Flush a port */
+	MMAL_MSG_PORT_ACTION_TYPE_CONNECT,          /* Connect ports */
+	MMAL_MSG_PORT_ACTION_TYPE_DISCONNECT,       /* Disconnect ports */
+	MMAL_MSG_PORT_ACTION_TYPE_SET_REQUIREMENTS, /* Set buffer requirements*/
+};
+
+struct mmal_msg_header {
+	u32 magic;
+	u32 type; /** enum mmal_msg_type */
+
+	/* Opaque handle to the control service */
+	struct mmal_control_service *control_service;
+
+	struct mmal_msg_context *context; /** a u32 per message context */
+	u32 status; /** The status of the vchiq operation */
+	u32 padding;
+};
+
+/* Send from VC to host to report version */
+struct mmal_msg_version {
+	u32 flags;
+	u32 major;
+	u32 minor;
+	u32 minimum;
+};
+
+/* request to VC to create component */
+struct mmal_msg_component_create {
+	void *client_component; /* component context */
+	char name[128];
+	u32 pid;                /* For debug */
+};
+
+/* reply from VC to component creation request */
+struct mmal_msg_component_create_reply {
+	u32 status; /** enum mmal_msg_status - how does this differ to
+		     * the one in the header?
+		     */
+	u32 component_handle; /* VideoCore handle for component */
+	u32 input_num;        /* Number of input ports */
+	u32 output_num;       /* Number of output ports */
+	u32 clock_num;        /* Number of clock ports */
+};
+
+/* request to VC to destroy a component */
+struct mmal_msg_component_destroy {
+	u32 component_handle;
+};
+
+struct mmal_msg_component_destroy_reply {
+	u32 status; /** The component destruction status */
+};
+
+
+/* request and reply to VC to enable a component */
+struct mmal_msg_component_enable {
+	u32 component_handle;
+};
+
+struct mmal_msg_component_enable_reply {
+	u32 status; /** The component enable status */
+};
+
+
+/* request and reply to VC to disable a component */
+struct mmal_msg_component_disable {
+	u32 component_handle;
+};
+
+struct mmal_msg_component_disable_reply {
+	u32 status; /** The component disable status */
+};
+
+/* request to VC to get port information */
+struct mmal_msg_port_info_get {
+	u32 component_handle;  /* component handle port is associated with */
+	u32 port_type;         /* enum mmal_msg_port_type */
+	u32 index;             /* port index to query */
+};
+
+/* reply from VC to get port info request */
+struct mmal_msg_port_info_get_reply {
+	u32 status; /** enum mmal_msg_status */
+	u32 component_handle;  /* component handle port is associated with */
+	u32 port_type;         /* enum mmal_msg_port_type */
+	u32 port_index;        /* port indexed in query */
+	s32 found;             /* unused */
+	u32 port_handle;               /**< Handle to use for this port */
+	struct mmal_port port;
+	struct mmal_es_format format; /* elementry stream format */
+	union mmal_es_specific_format es; /* es type specific data */
+	u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE]; /* es extra data */
+};
+
+/* request to VC to set port information */
+struct mmal_msg_port_info_set {
+	u32 component_handle;
+	u32 port_type;         /* enum mmal_msg_port_type */
+	u32 port_index;           /* port indexed in query */
+	struct mmal_port port;
+	struct mmal_es_format format;
+	union mmal_es_specific_format es;
+	u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE];
+};
+
+/* reply from VC to port info set request */
+struct mmal_msg_port_info_set_reply {
+	u32 status;
+	u32 component_handle;  /* component handle port is associated with */
+	u32 port_type;         /* enum mmal_msg_port_type */
+	u32 index;             /* port indexed in query */
+	s32 found;             /* unused */
+	u32 port_handle;               /**< Handle to use for this port */
+	struct mmal_port port;
+	struct mmal_es_format format;
+	union mmal_es_specific_format es;
+	u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE];
+};
+
+
+/* port action requests that take a mmal_port as a parameter */
+struct mmal_msg_port_action_port {
+	u32 component_handle;
+	u32 port_handle;
+	u32 action; /* enum mmal_msg_port_action_type */
+	struct mmal_port port;
+};
+
+/* port action requests that take handles as a parameter */
+struct mmal_msg_port_action_handle {
+	u32 component_handle;
+	u32 port_handle;
+	u32 action; /* enum mmal_msg_port_action_type */
+	u32 connect_component_handle;
+	u32 connect_port_handle;
+};
+
+struct mmal_msg_port_action_reply {
+	u32 status; /** The port action operation status */
+};
+
+
+
+
+/* MMAL buffer transfer */
+
+/** Size of space reserved in a buffer message for short messages. */
+#define MMAL_VC_SHORT_DATA 128
+
+/** Signals that the current payload is the end of the stream of data */
+#define MMAL_BUFFER_HEADER_FLAG_EOS                    (1<<0)
+/** Signals that the start of the current payload starts a frame */
+#define MMAL_BUFFER_HEADER_FLAG_FRAME_START            (1<<1)
+/** Signals that the end of the current payload ends a frame */
+#define MMAL_BUFFER_HEADER_FLAG_FRAME_END              (1<<2)
+/** Signals that the current payload contains only complete frames (>1) */
+#define MMAL_BUFFER_HEADER_FLAG_FRAME                  \
+	(MMAL_BUFFER_HEADER_FLAG_FRAME_START|MMAL_BUFFER_HEADER_FLAG_FRAME_END)
+/** Signals that the current payload is a keyframe (i.e. self decodable) */
+#define MMAL_BUFFER_HEADER_FLAG_KEYFRAME               (1<<3)
+/** Signals a discontinuity in the stream of data (e.g. after a seek).
+ * Can be used for instance by a decoder to reset its state */
+#define MMAL_BUFFER_HEADER_FLAG_DISCONTINUITY          (1<<4)
+/** Signals a buffer containing some kind of config data for the component
+ * (e.g. codec config data) */
+#define MMAL_BUFFER_HEADER_FLAG_CONFIG                 (1<<5)
+/** Signals an encrypted payload */
+#define MMAL_BUFFER_HEADER_FLAG_ENCRYPTED              (1<<6)
+/** Signals a buffer containing side information */
+#define MMAL_BUFFER_HEADER_FLAG_CODECSIDEINFO          (1<<7)
+/** Signals a buffer which is the snapshot/postview image from a stills
+ * capture
+ */
+#define MMAL_BUFFER_HEADER_FLAGS_SNAPSHOT              (1<<8)
+/** Signals a buffer which contains data known to be corrupted */
+#define MMAL_BUFFER_HEADER_FLAG_CORRUPTED              (1<<9)
+/** Signals that a buffer failed to be transmitted */
+#define MMAL_BUFFER_HEADER_FLAG_TRANSMISSION_FAILED    (1<<10)
+
+struct mmal_driver_buffer {
+	u32 magic;
+	u32 component_handle;
+	u32 port_handle;
+	void *client_context;
+};
+
+/* buffer header */
+struct mmal_buffer_header {
+	struct mmal_buffer_header *next; /* next header */
+	void *priv; /* framework private data */
+	u32 cmd;
+	void *data;
+	u32 alloc_size;
+	u32 length;
+	u32 offset;
+	u32 flags;
+	s64 pts;
+	s64 dts;
+	void *type;
+	void *user_data;
+};
+
+struct mmal_buffer_header_type_specific {
+	union {
+		struct {
+		u32 planes;
+		u32 offset[4];
+		u32 pitch[4];
+		u32 flags;
+		} video;
+	} u;
+};
+
+struct mmal_msg_buffer_from_host {
+	/* The front 32 bytes of the buffer header are copied
+	 * back to us in the reply to allow for context. This
+	 * area is used to store two mmal_driver_buffer structures to
+	 * allow for multiple concurrent service users.
+	 */
+	/* control data */
+	struct mmal_driver_buffer drvbuf;
+
+	/* referenced control data for passthrough buffer management */
+	struct mmal_driver_buffer drvbuf_ref;
+	struct mmal_buffer_header buffer_header; /* buffer header itself */
+	struct mmal_buffer_header_type_specific buffer_header_type_specific;
+	s32 is_zero_copy;
+	s32 has_reference;
+
+	/** allows short data to be xfered in control message */
+	u32 payload_in_message;
+	u8 short_data[MMAL_VC_SHORT_DATA];
+};
+
+
+/* port parameter setting */
+
+#define MMAL_WORKER_PORT_PARAMETER_SPACE      96
+
+struct mmal_msg_port_parameter_set {
+	u32 component_handle; /* component */
+	u32 port_handle;      /* port */
+	u32 id;     /* Parameter ID  */
+	u32 size;      /* Parameter size */
+	uint32_t value[MMAL_WORKER_PORT_PARAMETER_SPACE];
+};
+
+struct mmal_msg_port_parameter_set_reply {
+	u32 status; /** enum mmal_msg_status todo: how does this
+		     * differ to the one in the header?
+		     */
+};
+
+/* port parameter getting */
+
+struct mmal_msg_port_parameter_get {
+	u32 component_handle; /* component */
+	u32 port_handle;      /* port */
+	u32 id;     /* Parameter ID  */
+	u32 size;      /* Parameter size */
+};
+
+struct mmal_msg_port_parameter_get_reply {
+	u32 status;           /* Status of mmal_port_parameter_get call */
+	u32 id;     /* Parameter ID  */
+	u32 size;      /* Parameter size */
+	uint32_t value[MMAL_WORKER_PORT_PARAMETER_SPACE];
+};
+
+/* event messages */
+#define MMAL_WORKER_EVENT_SPACE 256
+
+struct mmal_msg_event_to_host {
+	void *client_component; /* component context */
+
+	u32 port_type;
+	u32 port_num;
+
+	u32 cmd;
+	u32 length;
+	u8 data[MMAL_WORKER_EVENT_SPACE];
+	struct mmal_buffer_header *delayed_buffer;
+};
+
+/* all mmal messages are serialised through this structure */
+struct mmal_msg {
+	/* header */
+	struct mmal_msg_header h;
+	/* payload */
+	union {
+		struct mmal_msg_version version;
+
+		struct mmal_msg_component_create component_create;
+		struct mmal_msg_component_create_reply component_create_reply;
+
+		struct mmal_msg_component_destroy component_destroy;
+		struct mmal_msg_component_destroy_reply component_destroy_reply;
+
+		struct mmal_msg_component_enable component_enable;
+		struct mmal_msg_component_enable_reply component_enable_reply;
+
+		struct mmal_msg_component_disable component_disable;
+		struct mmal_msg_component_disable_reply component_disable_reply;
+
+		struct mmal_msg_port_info_get port_info_get;
+		struct mmal_msg_port_info_get_reply port_info_get_reply;
+
+		struct mmal_msg_port_info_set port_info_set;
+		struct mmal_msg_port_info_set_reply port_info_set_reply;
+
+		struct mmal_msg_port_action_port port_action_port;
+		struct mmal_msg_port_action_handle port_action_handle;
+		struct mmal_msg_port_action_reply port_action_reply;
+
+		struct mmal_msg_buffer_from_host buffer_from_host;
+
+		struct mmal_msg_port_parameter_set port_parameter_set;
+		struct mmal_msg_port_parameter_set_reply
+			port_parameter_set_reply;
+		struct mmal_msg_port_parameter_get
+			port_parameter_get;
+		struct mmal_msg_port_parameter_get_reply
+			port_parameter_get_reply;
+
+		struct mmal_msg_event_to_host event_to_host;
+
+		u8 payload[MMAL_MSG_MAX_PAYLOAD];
+	} u;
+};
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/mmal-msg-port.h linux-rpi/drivers/media/platform/bcm2835/mmal-msg-port.h
--- linux-3.18.10/drivers/media/platform/bcm2835/mmal-msg-port.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/mmal-msg-port.h	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,107 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ */
+
+/* MMAL_PORT_TYPE_T */
+enum mmal_port_type {
+	MMAL_PORT_TYPE_UNKNOWN = 0,  /**< Unknown port type */
+	MMAL_PORT_TYPE_CONTROL,      /**< Control port */
+	MMAL_PORT_TYPE_INPUT,        /**< Input port */
+	MMAL_PORT_TYPE_OUTPUT,       /**< Output port */
+	MMAL_PORT_TYPE_CLOCK,        /**< Clock port */
+};
+
+/** The port is pass-through and doesn't need buffer headers allocated */
+#define MMAL_PORT_CAPABILITY_PASSTHROUGH                       0x01
+/** The port wants to allocate the buffer payloads.
+ * This signals a preference that payload allocation should be done
+ * on this port for efficiency reasons. */
+#define MMAL_PORT_CAPABILITY_ALLOCATION                        0x02
+/** The port supports format change events.
+ * This applies to input ports and is used to let the client know
+ * whether the port supports being reconfigured via a format
+ * change event (i.e. without having to disable the port). */
+#define MMAL_PORT_CAPABILITY_SUPPORTS_EVENT_FORMAT_CHANGE      0x04
+
+/* mmal port structure (MMAL_PORT_T)
+ *
+ * most elements are informational only, the pointer values for
+ * interogation messages are generally provided as additional
+ * strucures within the message. When used to set values only teh
+ * buffer_num, buffer_size and userdata parameters are writable.
+ */
+struct mmal_port {
+	void *priv; /* Private member used by the framework */
+	const char *name; /* Port name. Used for debugging purposes (RO) */
+
+	u32 type;      /* Type of the port (RO) enum mmal_port_type */
+	u16 index;     /* Index of the port in its type list (RO) */
+	u16 index_all; /* Index of the port in the list of all ports (RO) */
+
+	u32 is_enabled; /* Indicates whether the port is enabled or not (RO) */
+	struct mmal_es_format *format; /* Format of the elementary stream */
+
+	u32 buffer_num_min; /* Minimum number of buffers the port
+			     *   requires (RO).  This is set by the
+			     *   component.
+			     */
+
+	u32 buffer_size_min; /* Minimum size of buffers the port
+			      * requires (RO).  This is set by the
+			      * component.
+			      */
+
+	u32 buffer_alignment_min; /* Minimum alignment requirement for
+				   * the buffers (RO).  A value of
+				   * zero means no special alignment
+				   * requirements.  This is set by the
+				   * component.
+				   */
+
+	u32 buffer_num_recommended;  /* Number of buffers the port
+				      * recommends for optimal
+				      * performance (RO).  A value of
+				      * zero means no special
+				      * recommendation.  This is set
+				      * by the component.
+				      */
+
+	u32 buffer_size_recommended; /* Size of buffers the port
+				      * recommends for optimal
+				      * performance (RO).  A value of
+				      * zero means no special
+				      * recommendation.  This is set
+				      * by the component.
+				      */
+
+	u32 buffer_num; /* Actual number of buffers the port will use.
+			 * This is set by the client.
+			 */
+
+	u32 buffer_size; /* Actual maximum size of the buffers that
+			  * will be sent to the port. This is set by
+			  * the client.
+			  */
+
+	void *component; /* Component this port belongs to (Read Only) */
+
+	void *userdata; /* Field reserved for use by the client */
+
+	u32 capabilities; /* Flags describing the capabilities of a
+			   * port (RO).  Bitwise combination of \ref
+			   * portcapabilities "Port capabilities"
+			   * values.
+			   */
+
+};
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/mmal-parameters.h linux-rpi/drivers/media/platform/bcm2835/mmal-parameters.h
--- linux-3.18.10/drivers/media/platform/bcm2835/mmal-parameters.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/mmal-parameters.h	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,656 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ */
+
+/* common parameters */
+
+/** @name Parameter groups
+ * Parameters are divided into groups, and then allocated sequentially within
+ * a group using an enum.
+ * @{
+ */
+
+/** Common parameter ID group, used with many types of component. */
+#define MMAL_PARAMETER_GROUP_COMMON            (0<<16)
+/** Camera-specific parameter ID group. */
+#define MMAL_PARAMETER_GROUP_CAMERA            (1<<16)
+/** Video-specific parameter ID group. */
+#define MMAL_PARAMETER_GROUP_VIDEO             (2<<16)
+/** Audio-specific parameter ID group. */
+#define MMAL_PARAMETER_GROUP_AUDIO             (3<<16)
+/** Clock-specific parameter ID group. */
+#define MMAL_PARAMETER_GROUP_CLOCK             (4<<16)
+/** Miracast-specific parameter ID group. */
+#define MMAL_PARAMETER_GROUP_MIRACAST       (5<<16)
+
+/* Common parameters */
+enum mmal_parameter_common_type {
+	MMAL_PARAMETER_UNUSED  /**< Never a valid parameter ID */
+		= MMAL_PARAMETER_GROUP_COMMON,
+	MMAL_PARAMETER_SUPPORTED_ENCODINGS, /**< MMAL_PARAMETER_ENCODING_T */
+	MMAL_PARAMETER_URI, /**< MMAL_PARAMETER_URI_T */
+
+	/** MMAL_PARAMETER_CHANGE_EVENT_REQUEST_T */
+	MMAL_PARAMETER_CHANGE_EVENT_REQUEST,
+
+	/** MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_ZERO_COPY,
+
+	/**< MMAL_PARAMETER_BUFFER_REQUIREMENTS_T */
+	MMAL_PARAMETER_BUFFER_REQUIREMENTS,
+
+	MMAL_PARAMETER_STATISTICS, /**< MMAL_PARAMETER_STATISTICS_T */
+	MMAL_PARAMETER_CORE_STATISTICS, /**< MMAL_PARAMETER_CORE_STATISTICS_T */
+	MMAL_PARAMETER_MEM_USAGE, /**< MMAL_PARAMETER_MEM_USAGE_T */
+	MMAL_PARAMETER_BUFFER_FLAG_FILTER, /**< MMAL_PARAMETER_UINT32_T */
+	MMAL_PARAMETER_SEEK, /**< MMAL_PARAMETER_SEEK_T */
+	MMAL_PARAMETER_POWERMON_ENABLE, /**< MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_LOGGING, /**< MMAL_PARAMETER_LOGGING_T */
+	MMAL_PARAMETER_SYSTEM_TIME, /**< MMAL_PARAMETER_UINT64_T */
+	MMAL_PARAMETER_NO_IMAGE_PADDING  /**< MMAL_PARAMETER_BOOLEAN_T */
+};
+
+/* camera parameters */
+
+enum mmal_parameter_camera_type {
+	/* 0 */
+	/** @ref MMAL_PARAMETER_THUMBNAIL_CONFIG_T */
+	MMAL_PARAMETER_THUMBNAIL_CONFIGURATION
+		= MMAL_PARAMETER_GROUP_CAMERA,
+	MMAL_PARAMETER_CAPTURE_QUALITY, /**< Unused? */
+	MMAL_PARAMETER_ROTATION, /**< @ref MMAL_PARAMETER_INT32_T */
+	MMAL_PARAMETER_EXIF_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_EXIF, /**< @ref MMAL_PARAMETER_EXIF_T */
+	MMAL_PARAMETER_AWB_MODE, /**< @ref MMAL_PARAM_AWBMODE_T */
+	MMAL_PARAMETER_IMAGE_EFFECT, /**< @ref MMAL_PARAMETER_IMAGEFX_T */
+	MMAL_PARAMETER_COLOUR_EFFECT, /**< @ref MMAL_PARAMETER_COLOURFX_T */
+	MMAL_PARAMETER_FLICKER_AVOID, /**< @ref MMAL_PARAMETER_FLICKERAVOID_T */
+	MMAL_PARAMETER_FLASH, /**< @ref MMAL_PARAMETER_FLASH_T */
+	MMAL_PARAMETER_REDEYE, /**< @ref MMAL_PARAMETER_REDEYE_T */
+	MMAL_PARAMETER_FOCUS, /**< @ref MMAL_PARAMETER_FOCUS_T */
+	MMAL_PARAMETER_FOCAL_LENGTHS, /**< Unused? */
+	MMAL_PARAMETER_EXPOSURE_COMP, /**< @ref MMAL_PARAMETER_INT32_T */
+	MMAL_PARAMETER_ZOOM, /**< @ref MMAL_PARAMETER_SCALEFACTOR_T */
+	MMAL_PARAMETER_MIRROR, /**< @ref MMAL_PARAMETER_MIRROR_T */
+
+	/* 0x10 */
+	MMAL_PARAMETER_CAMERA_NUM, /**< @ref MMAL_PARAMETER_UINT32_T */
+	MMAL_PARAMETER_CAPTURE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_EXPOSURE_MODE, /**< @ref MMAL_PARAMETER_EXPOSUREMODE_T */
+	MMAL_PARAMETER_EXP_METERING_MODE, /**< @ref MMAL_PARAMETER_EXPOSUREMETERINGMODE_T */
+	MMAL_PARAMETER_FOCUS_STATUS, /**< @ref MMAL_PARAMETER_FOCUS_STATUS_T */
+	MMAL_PARAMETER_CAMERA_CONFIG, /**< @ref MMAL_PARAMETER_CAMERA_CONFIG_T */
+	MMAL_PARAMETER_CAPTURE_STATUS, /**< @ref MMAL_PARAMETER_CAPTURE_STATUS_T */
+	MMAL_PARAMETER_FACE_TRACK, /**< @ref MMAL_PARAMETER_FACE_TRACK_T */
+	MMAL_PARAMETER_DRAW_BOX_FACES_AND_FOCUS, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_JPEG_Q_FACTOR, /**< @ref MMAL_PARAMETER_UINT32_T */
+	MMAL_PARAMETER_FRAME_RATE, /**< @ref MMAL_PARAMETER_FRAME_RATE_T */
+	MMAL_PARAMETER_USE_STC, /**< @ref MMAL_PARAMETER_CAMERA_STC_MODE_T */
+	MMAL_PARAMETER_CAMERA_INFO, /**< @ref MMAL_PARAMETER_CAMERA_INFO_T */
+	MMAL_PARAMETER_VIDEO_STABILISATION, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_FACE_TRACK_RESULTS, /**< @ref MMAL_PARAMETER_FACE_TRACK_RESULTS_T */
+	MMAL_PARAMETER_ENABLE_RAW_CAPTURE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+
+	/* 0x20 */
+	MMAL_PARAMETER_DPF_FILE, /**< @ref MMAL_PARAMETER_URI_T */
+	MMAL_PARAMETER_ENABLE_DPF_FILE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_DPF_FAIL_IS_FATAL, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_CAPTURE_MODE, /**< @ref MMAL_PARAMETER_CAPTUREMODE_T */
+	MMAL_PARAMETER_FOCUS_REGIONS, /**< @ref MMAL_PARAMETER_FOCUS_REGIONS_T */
+	MMAL_PARAMETER_INPUT_CROP, /**< @ref MMAL_PARAMETER_INPUT_CROP_T */
+	MMAL_PARAMETER_SENSOR_INFORMATION, /**< @ref MMAL_PARAMETER_SENSOR_INFORMATION_T */
+	MMAL_PARAMETER_FLASH_SELECT, /**< @ref MMAL_PARAMETER_FLASH_SELECT_T */
+	MMAL_PARAMETER_FIELD_OF_VIEW, /**< @ref MMAL_PARAMETER_FIELD_OF_VIEW_T */
+	MMAL_PARAMETER_HIGH_DYNAMIC_RANGE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_DYNAMIC_RANGE_COMPRESSION, /**< @ref MMAL_PARAMETER_DRC_T */
+	MMAL_PARAMETER_ALGORITHM_CONTROL, /**< @ref MMAL_PARAMETER_ALGORITHM_CONTROL_T */
+	MMAL_PARAMETER_SHARPNESS, /**< @ref MMAL_PARAMETER_RATIONAL_T */
+	MMAL_PARAMETER_CONTRAST, /**< @ref MMAL_PARAMETER_RATIONAL_T */
+	MMAL_PARAMETER_BRIGHTNESS, /**< @ref MMAL_PARAMETER_RATIONAL_T */
+	MMAL_PARAMETER_SATURATION, /**< @ref MMAL_PARAMETER_RATIONAL_T */
+
+	/* 0x30 */
+	MMAL_PARAMETER_ISO, /**< @ref MMAL_PARAMETER_UINT32_T */
+	MMAL_PARAMETER_ANTISHAKE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+
+	/** @ref MMAL_PARAMETER_IMAGEFX_PARAMETERS_T */
+	MMAL_PARAMETER_IMAGE_EFFECT_PARAMETERS,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_CAMERA_BURST_CAPTURE,
+
+	/** @ref MMAL_PARAMETER_UINT32_T */
+	MMAL_PARAMETER_CAMERA_MIN_ISO,
+
+	/** @ref MMAL_PARAMETER_CAMERA_USE_CASE_T */
+	MMAL_PARAMETER_CAMERA_USE_CASE,
+
+	/**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_CAPTURE_STATS_PASS,
+
+	/** @ref MMAL_PARAMETER_UINT32_T */
+	MMAL_PARAMETER_CAMERA_CUSTOM_SENSOR_CONFIG,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_ENABLE_REGISTER_FILE,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_REGISTER_FAIL_IS_FATAL,
+
+	/** @ref MMAL_PARAMETER_CONFIGFILE_T */
+	MMAL_PARAMETER_CONFIGFILE_REGISTERS,
+
+	/** @ref MMAL_PARAMETER_CONFIGFILE_CHUNK_T */
+	MMAL_PARAMETER_CONFIGFILE_CHUNK_REGISTERS,
+	MMAL_PARAMETER_JPEG_ATTACH_LOG, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_ZERO_SHUTTER_LAG, /**< @ref MMAL_PARAMETER_ZEROSHUTTERLAG_T */
+	MMAL_PARAMETER_FPS_RANGE, /**< @ref MMAL_PARAMETER_FPS_RANGE_T */
+	MMAL_PARAMETER_CAPTURE_EXPOSURE_COMP, /**< @ref MMAL_PARAMETER_INT32_T */
+
+	/* 0x40 */
+	MMAL_PARAMETER_SW_SHARPEN_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_FLASH_REQUIRED, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_SW_SATURATION_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_SHUTTER_SPEED,             /**< Takes a @ref MMAL_PARAMETER_UINT32_T */
+	MMAL_PARAMETER_CUSTOM_AWB_GAINS,          /**< Takes a @ref MMAL_PARAMETER_AWB_GAINS_T */
+};
+
+struct mmal_parameter_rational {
+	s32 num;    /**< Numerator */
+	s32 den;    /**< Denominator */
+};
+
+enum mmal_parameter_camera_config_timestamp_mode {
+	MMAL_PARAM_TIMESTAMP_MODE_ZERO = 0, /* Always timestamp frames as 0 */
+	MMAL_PARAM_TIMESTAMP_MODE_RAW_STC,  /* Use the raw STC value
+					     * for the frame timestamp
+					     */
+	MMAL_PARAM_TIMESTAMP_MODE_RESET_STC, /* Use the STC timestamp
+					      * but subtract the
+					      * timestamp of the first
+					      * frame sent to give a
+					      * zero based timestamp.
+					      */
+};
+
+struct mmal_parameter_fps_range {
+	/**< Low end of the permitted framerate range */
+	struct mmal_parameter_rational	fps_low;
+	/**< High end of the permitted framerate range */
+	struct mmal_parameter_rational	fps_high;
+};
+
+
+/* camera configuration parameter */
+struct mmal_parameter_camera_config {
+	/* Parameters for setting up the image pools */
+	u32 max_stills_w; /* Max size of stills capture */
+	u32 max_stills_h;
+	u32 stills_yuv422; /* Allow YUV422 stills capture */
+	u32 one_shot_stills; /* Continuous or one shot stills captures. */
+
+	u32 max_preview_video_w; /* Max size of the preview or video
+				  * capture frames
+				  */
+	u32 max_preview_video_h;
+	u32 num_preview_video_frames;
+
+	/** Sets the height of the circular buffer for stills capture. */
+	u32 stills_capture_circular_buffer_height;
+
+	/** Allows preview/encode to resume as fast as possible after the stills
+	 * input frame has been received, and then processes the still frame in
+	 * the background whilst preview/encode has resumed.
+	 * Actual mode is controlled by MMAL_PARAMETER_CAPTURE_MODE.
+	 */
+	u32 fast_preview_resume;
+
+	/** Selects algorithm for timestamping frames if
+	 * there is no clock component connected.
+	 * enum mmal_parameter_camera_config_timestamp_mode
+	 */
+	s32 use_stc_timestamp;
+};
+
+
+enum mmal_parameter_exposuremode {
+	MMAL_PARAM_EXPOSUREMODE_OFF,
+	MMAL_PARAM_EXPOSUREMODE_AUTO,
+	MMAL_PARAM_EXPOSUREMODE_NIGHT,
+	MMAL_PARAM_EXPOSUREMODE_NIGHTPREVIEW,
+	MMAL_PARAM_EXPOSUREMODE_BACKLIGHT,
+	MMAL_PARAM_EXPOSUREMODE_SPOTLIGHT,
+	MMAL_PARAM_EXPOSUREMODE_SPORTS,
+	MMAL_PARAM_EXPOSUREMODE_SNOW,
+	MMAL_PARAM_EXPOSUREMODE_BEACH,
+	MMAL_PARAM_EXPOSUREMODE_VERYLONG,
+	MMAL_PARAM_EXPOSUREMODE_FIXEDFPS,
+	MMAL_PARAM_EXPOSUREMODE_ANTISHAKE,
+	MMAL_PARAM_EXPOSUREMODE_FIREWORKS,
+};
+
+enum mmal_parameter_exposuremeteringmode {
+	MMAL_PARAM_EXPOSUREMETERINGMODE_AVERAGE,
+	MMAL_PARAM_EXPOSUREMETERINGMODE_SPOT,
+	MMAL_PARAM_EXPOSUREMETERINGMODE_BACKLIT,
+	MMAL_PARAM_EXPOSUREMETERINGMODE_MATRIX,
+};
+
+enum mmal_parameter_awbmode {
+	MMAL_PARAM_AWBMODE_OFF,
+	MMAL_PARAM_AWBMODE_AUTO,
+	MMAL_PARAM_AWBMODE_SUNLIGHT,
+	MMAL_PARAM_AWBMODE_CLOUDY,
+	MMAL_PARAM_AWBMODE_SHADE,
+	MMAL_PARAM_AWBMODE_TUNGSTEN,
+	MMAL_PARAM_AWBMODE_FLUORESCENT,
+	MMAL_PARAM_AWBMODE_INCANDESCENT,
+	MMAL_PARAM_AWBMODE_FLASH,
+	MMAL_PARAM_AWBMODE_HORIZON,
+};
+
+enum mmal_parameter_imagefx {
+	MMAL_PARAM_IMAGEFX_NONE,
+	MMAL_PARAM_IMAGEFX_NEGATIVE,
+	MMAL_PARAM_IMAGEFX_SOLARIZE,
+	MMAL_PARAM_IMAGEFX_POSTERIZE,
+	MMAL_PARAM_IMAGEFX_WHITEBOARD,
+	MMAL_PARAM_IMAGEFX_BLACKBOARD,
+	MMAL_PARAM_IMAGEFX_SKETCH,
+	MMAL_PARAM_IMAGEFX_DENOISE,
+	MMAL_PARAM_IMAGEFX_EMBOSS,
+	MMAL_PARAM_IMAGEFX_OILPAINT,
+	MMAL_PARAM_IMAGEFX_HATCH,
+	MMAL_PARAM_IMAGEFX_GPEN,
+	MMAL_PARAM_IMAGEFX_PASTEL,
+	MMAL_PARAM_IMAGEFX_WATERCOLOUR,
+	MMAL_PARAM_IMAGEFX_FILM,
+	MMAL_PARAM_IMAGEFX_BLUR,
+	MMAL_PARAM_IMAGEFX_SATURATION,
+	MMAL_PARAM_IMAGEFX_COLOURSWAP,
+	MMAL_PARAM_IMAGEFX_WASHEDOUT,
+	MMAL_PARAM_IMAGEFX_POSTERISE,
+	MMAL_PARAM_IMAGEFX_COLOURPOINT,
+	MMAL_PARAM_IMAGEFX_COLOURBALANCE,
+	MMAL_PARAM_IMAGEFX_CARTOON,
+};
+
+enum MMAL_PARAM_FLICKERAVOID_T {
+	MMAL_PARAM_FLICKERAVOID_OFF,
+	MMAL_PARAM_FLICKERAVOID_AUTO,
+	MMAL_PARAM_FLICKERAVOID_50HZ,
+	MMAL_PARAM_FLICKERAVOID_60HZ,
+	MMAL_PARAM_FLICKERAVOID_MAX = 0x7FFFFFFF
+};
+
+struct mmal_parameter_awbgains {
+	struct mmal_parameter_rational r_gain;	/**< Red gain */
+	struct mmal_parameter_rational b_gain;	/**< Blue gain */
+};
+
+/** Manner of video rate control */
+enum mmal_parameter_rate_control_mode {
+	MMAL_VIDEO_RATECONTROL_DEFAULT,
+	MMAL_VIDEO_RATECONTROL_VARIABLE,
+	MMAL_VIDEO_RATECONTROL_CONSTANT,
+	MMAL_VIDEO_RATECONTROL_VARIABLE_SKIP_FRAMES,
+	MMAL_VIDEO_RATECONTROL_CONSTANT_SKIP_FRAMES
+};
+
+enum mmal_video_profile {
+	MMAL_VIDEO_PROFILE_H263_BASELINE,
+	MMAL_VIDEO_PROFILE_H263_H320CODING,
+	MMAL_VIDEO_PROFILE_H263_BACKWARDCOMPATIBLE,
+	MMAL_VIDEO_PROFILE_H263_ISWV2,
+	MMAL_VIDEO_PROFILE_H263_ISWV3,
+	MMAL_VIDEO_PROFILE_H263_HIGHCOMPRESSION,
+	MMAL_VIDEO_PROFILE_H263_INTERNET,
+	MMAL_VIDEO_PROFILE_H263_INTERLACE,
+	MMAL_VIDEO_PROFILE_H263_HIGHLATENCY,
+	MMAL_VIDEO_PROFILE_MP4V_SIMPLE,
+	MMAL_VIDEO_PROFILE_MP4V_SIMPLESCALABLE,
+	MMAL_VIDEO_PROFILE_MP4V_CORE,
+	MMAL_VIDEO_PROFILE_MP4V_MAIN,
+	MMAL_VIDEO_PROFILE_MP4V_NBIT,
+	MMAL_VIDEO_PROFILE_MP4V_SCALABLETEXTURE,
+	MMAL_VIDEO_PROFILE_MP4V_SIMPLEFACE,
+	MMAL_VIDEO_PROFILE_MP4V_SIMPLEFBA,
+	MMAL_VIDEO_PROFILE_MP4V_BASICANIMATED,
+	MMAL_VIDEO_PROFILE_MP4V_HYBRID,
+	MMAL_VIDEO_PROFILE_MP4V_ADVANCEDREALTIME,
+	MMAL_VIDEO_PROFILE_MP4V_CORESCALABLE,
+	MMAL_VIDEO_PROFILE_MP4V_ADVANCEDCODING,
+	MMAL_VIDEO_PROFILE_MP4V_ADVANCEDCORE,
+	MMAL_VIDEO_PROFILE_MP4V_ADVANCEDSCALABLE,
+	MMAL_VIDEO_PROFILE_MP4V_ADVANCEDSIMPLE,
+	MMAL_VIDEO_PROFILE_H264_BASELINE,
+	MMAL_VIDEO_PROFILE_H264_MAIN,
+	MMAL_VIDEO_PROFILE_H264_EXTENDED,
+	MMAL_VIDEO_PROFILE_H264_HIGH,
+	MMAL_VIDEO_PROFILE_H264_HIGH10,
+	MMAL_VIDEO_PROFILE_H264_HIGH422,
+	MMAL_VIDEO_PROFILE_H264_HIGH444,
+	MMAL_VIDEO_PROFILE_H264_CONSTRAINED_BASELINE,
+	MMAL_VIDEO_PROFILE_DUMMY = 0x7FFFFFFF
+};
+
+enum mmal_video_level {
+	MMAL_VIDEO_LEVEL_H263_10,
+	MMAL_VIDEO_LEVEL_H263_20,
+	MMAL_VIDEO_LEVEL_H263_30,
+	MMAL_VIDEO_LEVEL_H263_40,
+	MMAL_VIDEO_LEVEL_H263_45,
+	MMAL_VIDEO_LEVEL_H263_50,
+	MMAL_VIDEO_LEVEL_H263_60,
+	MMAL_VIDEO_LEVEL_H263_70,
+	MMAL_VIDEO_LEVEL_MP4V_0,
+	MMAL_VIDEO_LEVEL_MP4V_0b,
+	MMAL_VIDEO_LEVEL_MP4V_1,
+	MMAL_VIDEO_LEVEL_MP4V_2,
+	MMAL_VIDEO_LEVEL_MP4V_3,
+	MMAL_VIDEO_LEVEL_MP4V_4,
+	MMAL_VIDEO_LEVEL_MP4V_4a,
+	MMAL_VIDEO_LEVEL_MP4V_5,
+	MMAL_VIDEO_LEVEL_MP4V_6,
+	MMAL_VIDEO_LEVEL_H264_1,
+	MMAL_VIDEO_LEVEL_H264_1b,
+	MMAL_VIDEO_LEVEL_H264_11,
+	MMAL_VIDEO_LEVEL_H264_12,
+	MMAL_VIDEO_LEVEL_H264_13,
+	MMAL_VIDEO_LEVEL_H264_2,
+	MMAL_VIDEO_LEVEL_H264_21,
+	MMAL_VIDEO_LEVEL_H264_22,
+	MMAL_VIDEO_LEVEL_H264_3,
+	MMAL_VIDEO_LEVEL_H264_31,
+	MMAL_VIDEO_LEVEL_H264_32,
+	MMAL_VIDEO_LEVEL_H264_4,
+	MMAL_VIDEO_LEVEL_H264_41,
+	MMAL_VIDEO_LEVEL_H264_42,
+	MMAL_VIDEO_LEVEL_H264_5,
+	MMAL_VIDEO_LEVEL_H264_51,
+	MMAL_VIDEO_LEVEL_DUMMY = 0x7FFFFFFF
+};
+
+struct mmal_parameter_video_profile {
+	enum mmal_video_profile profile;
+	enum mmal_video_level level;
+};
+
+/* video parameters */
+
+enum mmal_parameter_video_type {
+	/** @ref MMAL_DISPLAYREGION_T */
+	MMAL_PARAMETER_DISPLAYREGION = MMAL_PARAMETER_GROUP_VIDEO,
+
+	/** @ref MMAL_PARAMETER_VIDEO_PROFILE_T */
+	MMAL_PARAMETER_SUPPORTED_PROFILES,
+
+	/** @ref MMAL_PARAMETER_VIDEO_PROFILE_T */
+	MMAL_PARAMETER_PROFILE,
+
+	/** @ref MMAL_PARAMETER_UINT32_T */
+	MMAL_PARAMETER_INTRAPERIOD,
+
+	/** @ref MMAL_PARAMETER_VIDEO_RATECONTROL_T */
+	MMAL_PARAMETER_RATECONTROL,
+
+	/** @ref MMAL_PARAMETER_VIDEO_NALUNITFORMAT_T */
+	MMAL_PARAMETER_NALUNITFORMAT,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_MINIMISE_FRAGMENTATION,
+
+	/** @ref MMAL_PARAMETER_UINT32_T.
+	 * Setting the value to zero resets to the default (one slice per frame).
+	 */
+	MMAL_PARAMETER_MB_ROWS_PER_SLICE,
+
+	/** @ref MMAL_PARAMETER_VIDEO_LEVEL_EXTENSION_T */
+	MMAL_PARAMETER_VIDEO_LEVEL_EXTENSION,
+
+	/** @ref MMAL_PARAMETER_VIDEO_EEDE_ENABLE_T */
+	MMAL_PARAMETER_VIDEO_EEDE_ENABLE,
+
+	/** @ref MMAL_PARAMETER_VIDEO_EEDE_LOSSRATE_T */
+	MMAL_PARAMETER_VIDEO_EEDE_LOSSRATE,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T. Request an I-frame. */
+	MMAL_PARAMETER_VIDEO_REQUEST_I_FRAME,
+	/** @ref MMAL_PARAMETER_VIDEO_INTRA_REFRESH_T */
+	MMAL_PARAMETER_VIDEO_INTRA_REFRESH,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T. */
+	MMAL_PARAMETER_VIDEO_IMMUTABLE_INPUT,
+
+	/** @ref MMAL_PARAMETER_UINT32_T. Run-time bit rate control */
+	MMAL_PARAMETER_VIDEO_BIT_RATE,
+
+	/** @ref MMAL_PARAMETER_FRAME_RATE_T */
+	MMAL_PARAMETER_VIDEO_FRAME_RATE,
+
+	/** @ref MMAL_PARAMETER_UINT32_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_MIN_QUANT,
+
+	/** @ref MMAL_PARAMETER_UINT32_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_MAX_QUANT,
+
+	/** @ref MMAL_PARAMETER_VIDEO_ENCODE_RC_MODEL_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_RC_MODEL,
+
+	MMAL_PARAMETER_EXTRA_BUFFERS, /**< @ref MMAL_PARAMETER_UINT32_T. */
+	/** @ref MMAL_PARAMETER_UINT32_T.
+	 * Changing this parameter from the default can reduce frame rate
+	 * because image buffers need to be re-pitched.
+	 */
+	MMAL_PARAMETER_VIDEO_ALIGN_HORIZ,
+
+	/** @ref MMAL_PARAMETER_UINT32_T.
+	 * Changing this parameter from the default can reduce frame rate
+	 * because image buffers need to be re-pitched.
+	 */
+	MMAL_PARAMETER_VIDEO_ALIGN_VERT,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T. */
+	MMAL_PARAMETER_VIDEO_DROPPABLE_PFRAMES,
+
+	/** @ref MMAL_PARAMETER_UINT32_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_INITIAL_QUANT,
+
+	/**< @ref MMAL_PARAMETER_UINT32_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_QP_P,
+
+	/**< @ref MMAL_PARAMETER_UINT32_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_RC_SLICE_DQUANT,
+
+	/** @ref MMAL_PARAMETER_UINT32_T */
+	MMAL_PARAMETER_VIDEO_ENCODE_FRAME_LIMIT_BITS,
+
+	/** @ref MMAL_PARAMETER_UINT32_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_PEAK_RATE,
+
+	/* H264 specific parameters */
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_H264_DISABLE_CABAC,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_H264_LOW_LATENCY,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_H264_AU_DELIMITERS,
+
+	/** @ref MMAL_PARAMETER_UINT32_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_H264_DEBLOCK_IDC,
+
+	/** @ref MMAL_PARAMETER_VIDEO_ENCODER_H264_MB_INTRA_MODES_T. */
+	MMAL_PARAMETER_VIDEO_ENCODE_H264_MB_INTRA_MODE,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_VIDEO_ENCODE_HEADER_ON_OPEN,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_VIDEO_ENCODE_PRECODE_FOR_QP,
+
+	/** @ref MMAL_PARAMETER_VIDEO_DRM_INIT_INFO_T. */
+	MMAL_PARAMETER_VIDEO_DRM_INIT_INFO,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_VIDEO_TIMESTAMP_FIFO,
+
+	/** @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_VIDEO_DECODE_ERROR_CONCEALMENT,
+
+	/** @ref MMAL_PARAMETER_VIDEO_DRM_PROTECT_BUFFER_T. */
+	MMAL_PARAMETER_VIDEO_DRM_PROTECT_BUFFER,
+
+	/** @ref MMAL_PARAMETER_BYTES_T */
+	MMAL_PARAMETER_VIDEO_DECODE_CONFIG_VD3,
+
+	/**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_VIDEO_ENCODE_H264_VCL_HRD_PARAMETERS,
+
+	/**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_VIDEO_ENCODE_H264_LOW_DELAY_HRD_FLAG,
+
+	/**< @ref MMAL_PARAMETER_BOOLEAN_T */
+	MMAL_PARAMETER_VIDEO_ENCODE_INLINE_HEADER
+};
+
+/** Valid mirror modes */
+enum mmal_parameter_mirror {
+	MMAL_PARAM_MIRROR_NONE,
+	MMAL_PARAM_MIRROR_VERTICAL,
+	MMAL_PARAM_MIRROR_HORIZONTAL,
+	MMAL_PARAM_MIRROR_BOTH,
+};
+
+enum mmal_parameter_displaytransform {
+	MMAL_DISPLAY_ROT0 = 0,
+	MMAL_DISPLAY_MIRROR_ROT0 = 1,
+	MMAL_DISPLAY_MIRROR_ROT180 = 2,
+	MMAL_DISPLAY_ROT180 = 3,
+	MMAL_DISPLAY_MIRROR_ROT90 = 4,
+	MMAL_DISPLAY_ROT270 = 5,
+	MMAL_DISPLAY_ROT90 = 6,
+	MMAL_DISPLAY_MIRROR_ROT270 = 7,
+};
+
+enum mmal_parameter_displaymode {
+	MMAL_DISPLAY_MODE_FILL = 0,
+	MMAL_DISPLAY_MODE_LETTERBOX = 1,
+};
+
+enum mmal_parameter_displayset {
+	MMAL_DISPLAY_SET_NONE = 0,
+	MMAL_DISPLAY_SET_NUM = 1,
+	MMAL_DISPLAY_SET_FULLSCREEN = 2,
+	MMAL_DISPLAY_SET_TRANSFORM = 4,
+	MMAL_DISPLAY_SET_DEST_RECT = 8,
+	MMAL_DISPLAY_SET_SRC_RECT = 0x10,
+	MMAL_DISPLAY_SET_MODE = 0x20,
+	MMAL_DISPLAY_SET_PIXEL = 0x40,
+	MMAL_DISPLAY_SET_NOASPECT = 0x80,
+	MMAL_DISPLAY_SET_LAYER = 0x100,
+	MMAL_DISPLAY_SET_COPYPROTECT = 0x200,
+	MMAL_DISPLAY_SET_ALPHA = 0x400,
+};
+
+struct mmal_parameter_displayregion {
+	/** Bitfield that indicates which fields are set and should be
+	 * used. All other fields will maintain their current value.
+	 * \ref MMAL_DISPLAYSET_T defines the bits that can be
+	 * combined.
+	 */
+	u32 set;
+
+	/** Describes the display output device, with 0 typically
+	 * being a directly connected LCD display.  The actual values
+	 * will depend on the hardware.  Code using hard-wired numbers
+	 * (e.g. 2) is certain to fail.
+	 */
+
+	u32 display_num;
+	/** Indicates that we are using the full device screen area,
+	 * rather than a window of the display.  If zero, then
+	 * dest_rect is used to specify a region of the display to
+	 * use.
+	 */
+
+	s32 fullscreen;
+	/** Indicates any rotation or flipping used to map frames onto
+	 * the natural display orientation.
+	 */
+	u32 transform; /* enum mmal_parameter_displaytransform */
+
+	/** Where to display the frame within the screen, if
+	 * fullscreen is zero.
+	 */
+	struct vchiq_mmal_rect dest_rect;
+
+	/** Indicates which area of the frame to display. If all
+	 * values are zero, the whole frame will be used.
+	 */
+	struct vchiq_mmal_rect src_rect;
+
+	/** If set to non-zero, indicates that any display scaling
+	 * should disregard the aspect ratio of the frame region being
+	 * displayed.
+	 */
+	s32 noaspect;
+
+	/** Indicates how the image should be scaled to fit the
+	 * display. \code MMAL_DISPLAY_MODE_FILL \endcode indicates
+	 * that the image should fill the screen by potentially
+	 * cropping the frames.  Setting \code mode \endcode to \code
+	 * MMAL_DISPLAY_MODE_LETTERBOX \endcode indicates that all the
+	 * source region should be displayed and black bars added if
+	 * necessary.
+	 */
+	u32 mode; /* enum mmal_parameter_displaymode */
+
+	/** If non-zero, defines the width of a source pixel relative
+	 * to \code pixel_y \endcode.  If zero, then pixels default to
+	 * being square.
+	 */
+	u32 pixel_x;
+
+	/** If non-zero, defines the height of a source pixel relative
+	 * to \code pixel_x \endcode.  If zero, then pixels default to
+	 * being square.
+	 */
+	u32 pixel_y;
+
+	/** Sets the relative depth of the images, with greater values
+	 * being in front of smaller values.
+	 */
+	u32 layer;
+
+	/** Set to non-zero to ensure copy protection is used on
+	 * output.
+	 */
+	s32 copyprotect_required;
+
+	/** Level of opacity of the layer, where zero is fully
+	 * transparent and 255 is fully opaque.
+	 */
+	u32 alpha;
+};
+
+#define MMAL_MAX_IMAGEFX_PARAMETERS 5
+
+struct mmal_parameter_imagefx_parameters {
+	enum mmal_parameter_imagefx effect;
+	u32 num_effect_params;
+	u32 effect_parameter[MMAL_MAX_IMAGEFX_PARAMETERS];
+};
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/mmal-vchiq.c linux-rpi/drivers/media/platform/bcm2835/mmal-vchiq.c
--- linux-3.18.10/drivers/media/platform/bcm2835/mmal-vchiq.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/mmal-vchiq.c	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,1916 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ *
+ * V4L2 driver MMAL vchiq interface code
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/mutex.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/completion.h>
+#include <linux/vmalloc.h>
+#include <asm/cacheflush.h>
+#include <media/videobuf2-vmalloc.h>
+
+#include "mmal-common.h"
+#include "mmal-vchiq.h"
+#include "mmal-msg.h"
+
+#define USE_VCHIQ_ARM
+#include "interface/vchi/vchi.h"
+
+/* maximum number of components supported */
+#define VCHIQ_MMAL_MAX_COMPONENTS 4
+
+/*#define FULL_MSG_DUMP 1*/
+
+#ifdef DEBUG
+static const char *const msg_type_names[] = {
+	"UNKNOWN",
+	"QUIT",
+	"SERVICE_CLOSED",
+	"GET_VERSION",
+	"COMPONENT_CREATE",
+	"COMPONENT_DESTROY",
+	"COMPONENT_ENABLE",
+	"COMPONENT_DISABLE",
+	"PORT_INFO_GET",
+	"PORT_INFO_SET",
+	"PORT_ACTION",
+	"BUFFER_FROM_HOST",
+	"BUFFER_TO_HOST",
+	"GET_STATS",
+	"PORT_PARAMETER_SET",
+	"PORT_PARAMETER_GET",
+	"EVENT_TO_HOST",
+	"GET_CORE_STATS_FOR_PORT",
+	"OPAQUE_ALLOCATOR",
+	"CONSUME_MEM",
+	"LMK",
+	"OPAQUE_ALLOCATOR_DESC",
+	"DRM_GET_LHS32",
+	"DRM_GET_TIME",
+	"BUFFER_FROM_HOST_ZEROLEN",
+	"PORT_FLUSH",
+	"HOST_LOG",
+};
+#endif
+
+static const char *const port_action_type_names[] = {
+	"UNKNOWN",
+	"ENABLE",
+	"DISABLE",
+	"FLUSH",
+	"CONNECT",
+	"DISCONNECT",
+	"SET_REQUIREMENTS",
+};
+
+#if defined(DEBUG)
+#if defined(FULL_MSG_DUMP)
+#define DBG_DUMP_MSG(MSG, MSG_LEN, TITLE)				\
+	do {								\
+		pr_debug(TITLE" type:%s(%d) length:%d\n",		\
+			 msg_type_names[(MSG)->h.type],			\
+			 (MSG)->h.type, (MSG_LEN));			\
+		print_hex_dump(KERN_DEBUG, "<<h: ", DUMP_PREFIX_OFFSET,	\
+			       16, 4, (MSG),				\
+			       sizeof(struct mmal_msg_header), 1);	\
+		print_hex_dump(KERN_DEBUG, "<<p: ", DUMP_PREFIX_OFFSET,	\
+			       16, 4,					\
+			       ((u8 *)(MSG)) + sizeof(struct mmal_msg_header),\
+			       (MSG_LEN) - sizeof(struct mmal_msg_header), 1); \
+	} while (0)
+#else
+#define DBG_DUMP_MSG(MSG, MSG_LEN, TITLE)				\
+	{								\
+		pr_debug(TITLE" type:%s(%d) length:%d\n",		\
+			 msg_type_names[(MSG)->h.type],			\
+			 (MSG)->h.type, (MSG_LEN));			\
+	}
+#endif
+#else
+#define DBG_DUMP_MSG(MSG, MSG_LEN, TITLE)
+#endif
+
+/* normal message context */
+struct mmal_msg_context {
+	union {
+		struct {
+			/* work struct for defered callback - must come first */
+			struct work_struct work;
+			/* mmal instance */
+			struct vchiq_mmal_instance *instance;
+			/* mmal port */
+			struct vchiq_mmal_port *port;
+			/* actual buffer used to store bulk reply */
+			struct mmal_buffer *buffer;
+			/* amount of buffer used */
+			unsigned long buffer_used;
+			/* MMAL buffer flags */
+			u32 mmal_flags;
+			/* Presentation and Decode timestamps */
+			s64 pts;
+			s64 dts;
+
+			int status;	/* context status */
+
+		} bulk;		/* bulk data */
+
+		struct {
+			/* message handle to release */
+			VCHI_HELD_MSG_T msg_handle;
+			/* pointer to received message */
+			struct mmal_msg *msg;
+			/* received message length */
+			u32 msg_len;
+			/* completion upon reply */
+			struct completion cmplt;
+		} sync;		/* synchronous response */
+	} u;
+
+};
+
+struct vchiq_mmal_instance {
+	VCHI_SERVICE_HANDLE_T handle;
+
+	/* ensure serialised access to service */
+	struct mutex vchiq_mutex;
+
+	/* ensure serialised access to bulk operations */
+	struct mutex bulk_mutex;
+
+	/* vmalloc page to receive scratch bulk xfers into */
+	void *bulk_scratch;
+
+	/* component to use next */
+	int component_idx;
+	struct vchiq_mmal_component component[VCHIQ_MMAL_MAX_COMPONENTS];
+};
+
+static struct mmal_msg_context *get_msg_context(struct vchiq_mmal_instance
+						*instance)
+{
+	struct mmal_msg_context *msg_context;
+
+	/* todo: should this be allocated from a pool to avoid kmalloc */
+	msg_context = kmalloc(sizeof(*msg_context), GFP_KERNEL);
+	memset(msg_context, 0, sizeof(*msg_context));
+
+	return msg_context;
+}
+
+static void release_msg_context(struct mmal_msg_context *msg_context)
+{
+	kfree(msg_context);
+}
+
+/* deals with receipt of event to host message */
+static void event_to_host_cb(struct vchiq_mmal_instance *instance,
+			     struct mmal_msg *msg, u32 msg_len)
+{
+	pr_debug("unhandled event\n");
+	pr_debug("component:%p port type:%d num:%d cmd:0x%x length:%d\n",
+		 msg->u.event_to_host.client_component,
+		 msg->u.event_to_host.port_type,
+		 msg->u.event_to_host.port_num,
+		 msg->u.event_to_host.cmd, msg->u.event_to_host.length);
+}
+
+/* workqueue scheduled callback
+ *
+ * we do this because it is important we do not call any other vchiq
+ * sync calls from witin the message delivery thread
+ */
+static void buffer_work_cb(struct work_struct *work)
+{
+	struct mmal_msg_context *msg_context = (struct mmal_msg_context *)work;
+
+	msg_context->u.bulk.port->buffer_cb(msg_context->u.bulk.instance,
+					    msg_context->u.bulk.port,
+					    msg_context->u.bulk.status,
+					    msg_context->u.bulk.buffer,
+					    msg_context->u.bulk.buffer_used,
+					    msg_context->u.bulk.mmal_flags,
+					    msg_context->u.bulk.dts,
+					    msg_context->u.bulk.pts);
+
+	/* release message context */
+	release_msg_context(msg_context);
+}
+
+/* enqueue a bulk receive for a given message context */
+static int bulk_receive(struct vchiq_mmal_instance *instance,
+			struct mmal_msg *msg,
+			struct mmal_msg_context *msg_context)
+{
+	unsigned long rd_len;
+	unsigned long flags = 0;
+	int ret;
+
+	/* bulk mutex stops other bulk operations while we have a
+	 * receive in progress - released in callback
+	 */
+	ret = mutex_lock_interruptible(&instance->bulk_mutex);
+	if (ret != 0)
+		return ret;
+
+	rd_len = msg->u.buffer_from_host.buffer_header.length;
+
+	/* take buffer from queue */
+	spin_lock_irqsave(&msg_context->u.bulk.port->slock, flags);
+	if (list_empty(&msg_context->u.bulk.port->buffers)) {
+		spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags);
+		pr_err("buffer list empty trying to submit bulk receive\n");
+
+		/* todo: this is a serious error, we should never have
+		 * commited a buffer_to_host operation to the mmal
+		 * port without the buffer to back it up (underflow
+		 * handling) and there is no obvious way to deal with
+		 * this - how is the mmal servie going to react when
+		 * we fail to do the xfer and reschedule a buffer when
+		 * it arrives? perhaps a starved flag to indicate a
+		 * waiting bulk receive?
+		 */
+
+		mutex_unlock(&instance->bulk_mutex);
+
+		return -EINVAL;
+	}
+
+	msg_context->u.bulk.buffer =
+	    list_entry(msg_context->u.bulk.port->buffers.next,
+		       struct mmal_buffer, list);
+	list_del(&msg_context->u.bulk.buffer->list);
+
+	spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags);
+
+	/* ensure we do not overrun the available buffer */
+	if (rd_len > msg_context->u.bulk.buffer->buffer_size) {
+		rd_len = msg_context->u.bulk.buffer->buffer_size;
+		pr_warn("short read as not enough receive buffer space\n");
+		/* todo: is this the correct response, what happens to
+		 * the rest of the message data?
+		 */
+	}
+
+	/* store length */
+	msg_context->u.bulk.buffer_used = rd_len;
+	msg_context->u.bulk.mmal_flags =
+	    msg->u.buffer_from_host.buffer_header.flags;
+	msg_context->u.bulk.dts = msg->u.buffer_from_host.buffer_header.dts;
+	msg_context->u.bulk.pts = msg->u.buffer_from_host.buffer_header.pts;
+
+	// only need to flush L1 cache here, as VCHIQ takes care of the L2
+	// cache.
+	__cpuc_flush_dcache_area(msg_context->u.bulk.buffer->buffer, rd_len);
+
+	/* queue the bulk submission */
+	vchi_service_use(instance->handle);
+	ret = vchi_bulk_queue_receive(instance->handle,
+				      msg_context->u.bulk.buffer->buffer,
+				      /* Actual receive needs to be a multiple
+				       * of 4 bytes
+				       */
+				      (rd_len + 3) & ~3,
+				      VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE |
+				      VCHI_FLAGS_BLOCK_UNTIL_QUEUED,
+				      msg_context);
+
+	vchi_service_release(instance->handle);
+
+	if (ret != 0) {
+		/* callback will not be clearing the mutex */
+		mutex_unlock(&instance->bulk_mutex);
+	}
+
+	return ret;
+}
+
+/* enque a dummy bulk receive for a given message context */
+static int dummy_bulk_receive(struct vchiq_mmal_instance *instance,
+			      struct mmal_msg_context *msg_context)
+{
+	int ret;
+
+	/* bulk mutex stops other bulk operations while we have a
+	 * receive in progress - released in callback
+	 */
+	ret = mutex_lock_interruptible(&instance->bulk_mutex);
+	if (ret != 0)
+		return ret;
+
+	/* zero length indicates this was a dummy transfer */
+	msg_context->u.bulk.buffer_used = 0;
+
+	/* queue the bulk submission */
+	vchi_service_use(instance->handle);
+
+	ret = vchi_bulk_queue_receive(instance->handle,
+				      instance->bulk_scratch,
+				      8,
+				      VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE |
+				      VCHI_FLAGS_BLOCK_UNTIL_QUEUED,
+				      msg_context);
+
+	vchi_service_release(instance->handle);
+
+	if (ret != 0) {
+		/* callback will not be clearing the mutex */
+		mutex_unlock(&instance->bulk_mutex);
+	}
+
+	return ret;
+}
+
+/* data in message, memcpy from packet into output buffer */
+static int inline_receive(struct vchiq_mmal_instance *instance,
+			  struct mmal_msg *msg,
+			  struct mmal_msg_context *msg_context)
+{
+	unsigned long flags = 0;
+
+	/* take buffer from queue */
+	spin_lock_irqsave(&msg_context->u.bulk.port->slock, flags);
+	if (list_empty(&msg_context->u.bulk.port->buffers)) {
+		spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags);
+		pr_err("buffer list empty trying to receive inline\n");
+
+		/* todo: this is a serious error, we should never have
+		 * commited a buffer_to_host operation to the mmal
+		 * port without the buffer to back it up (with
+		 * underflow handling) and there is no obvious way to
+		 * deal with this. Less bad than the bulk case as we
+		 * can just drop this on the floor but...unhelpful
+		 */
+		return -EINVAL;
+	}
+
+	msg_context->u.bulk.buffer =
+	    list_entry(msg_context->u.bulk.port->buffers.next,
+		       struct mmal_buffer, list);
+	list_del(&msg_context->u.bulk.buffer->list);
+
+	spin_unlock_irqrestore(&msg_context->u.bulk.port->slock, flags);
+
+	memcpy(msg_context->u.bulk.buffer->buffer,
+	       msg->u.buffer_from_host.short_data,
+	       msg->u.buffer_from_host.payload_in_message);
+
+	msg_context->u.bulk.buffer_used =
+	    msg->u.buffer_from_host.payload_in_message;
+
+	return 0;
+}
+
+/* queue the buffer availability with MMAL_MSG_TYPE_BUFFER_FROM_HOST */
+static int
+buffer_from_host(struct vchiq_mmal_instance *instance,
+		 struct vchiq_mmal_port *port, struct mmal_buffer *buf)
+{
+	struct mmal_msg_context *msg_context;
+	struct mmal_msg m;
+	int ret;
+
+	pr_debug("instance:%p buffer:%p\n", instance->handle, buf);
+
+	/* bulk mutex stops other bulk operations while we
+	 * have a receive in progress
+	 */
+	if (mutex_lock_interruptible(&instance->bulk_mutex))
+		return -EINTR;
+
+	/* get context */
+	msg_context = get_msg_context(instance);
+	if (msg_context == NULL)
+		return -ENOMEM;
+
+	/* store bulk message context for when data arrives */
+	msg_context->u.bulk.instance = instance;
+	msg_context->u.bulk.port = port;
+	msg_context->u.bulk.buffer = NULL;	/* not valid until bulk xfer */
+	msg_context->u.bulk.buffer_used = 0;
+
+	/* initialise work structure ready to schedule callback */
+	INIT_WORK(&msg_context->u.bulk.work, buffer_work_cb);
+
+	/* prep the buffer from host message */
+	memset(&m, 0xbc, sizeof(m));	/* just to make debug clearer */
+
+	m.h.type = MMAL_MSG_TYPE_BUFFER_FROM_HOST;
+	m.h.magic = MMAL_MAGIC;
+	m.h.context = msg_context;
+	m.h.status = 0;
+
+	/* drvbuf is our private data passed back */
+	m.u.buffer_from_host.drvbuf.magic = MMAL_MAGIC;
+	m.u.buffer_from_host.drvbuf.component_handle = port->component->handle;
+	m.u.buffer_from_host.drvbuf.port_handle = port->handle;
+	m.u.buffer_from_host.drvbuf.client_context = msg_context;
+
+	/* buffer header */
+	m.u.buffer_from_host.buffer_header.cmd = 0;
+	m.u.buffer_from_host.buffer_header.data = buf->buffer;
+	m.u.buffer_from_host.buffer_header.alloc_size = buf->buffer_size;
+	m.u.buffer_from_host.buffer_header.length = 0;	/* nothing used yet */
+	m.u.buffer_from_host.buffer_header.offset = 0;	/* no offset */
+	m.u.buffer_from_host.buffer_header.flags = 0;	/* no flags */
+	m.u.buffer_from_host.buffer_header.pts = MMAL_TIME_UNKNOWN;
+	m.u.buffer_from_host.buffer_header.dts = MMAL_TIME_UNKNOWN;
+
+	/* clear buffer type sepecific data */
+	memset(&m.u.buffer_from_host.buffer_header_type_specific, 0,
+	       sizeof(m.u.buffer_from_host.buffer_header_type_specific));
+
+	/* no payload in message */
+	m.u.buffer_from_host.payload_in_message = 0;
+
+	vchi_service_use(instance->handle);
+
+	ret = vchi_msg_queue(instance->handle, &m,
+			     sizeof(struct mmal_msg_header) +
+			     sizeof(m.u.buffer_from_host),
+			     VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+
+	if (ret != 0) {
+		release_msg_context(msg_context);
+		/* todo: is this correct error value? */
+	}
+
+	vchi_service_release(instance->handle);
+
+	mutex_unlock(&instance->bulk_mutex);
+
+	return ret;
+}
+
+/* submit a buffer to the mmal sevice
+ *
+ * the buffer_from_host uses size data from the ports next available
+ * mmal_buffer and deals with there being no buffer available by
+ * incrementing the underflow for later
+ */
+static int port_buffer_from_host(struct vchiq_mmal_instance *instance,
+				 struct vchiq_mmal_port *port)
+{
+	int ret;
+	struct mmal_buffer *buf;
+	unsigned long flags = 0;
+
+	if (!port->enabled)
+		return -EINVAL;
+
+	/* peek buffer from queue */
+	spin_lock_irqsave(&port->slock, flags);
+	if (list_empty(&port->buffers)) {
+		port->buffer_underflow++;
+		spin_unlock_irqrestore(&port->slock, flags);
+		return -ENOSPC;
+	}
+
+	buf = list_entry(port->buffers.next, struct mmal_buffer, list);
+
+	spin_unlock_irqrestore(&port->slock, flags);
+
+	/* issue buffer to mmal service */
+	ret = buffer_from_host(instance, port, buf);
+	if (ret) {
+		pr_err("adding buffer header failed\n");
+		/* todo: how should this be dealt with */
+	}
+
+	return ret;
+}
+
+/* deals with receipt of buffer to host message */
+static void buffer_to_host_cb(struct vchiq_mmal_instance *instance,
+			      struct mmal_msg *msg, u32 msg_len)
+{
+	struct mmal_msg_context *msg_context;
+
+	pr_debug("buffer_to_host_cb: instance:%p msg:%p msg_len:%d\n",
+		 instance, msg, msg_len);
+
+	if (msg->u.buffer_from_host.drvbuf.magic == MMAL_MAGIC) {
+		msg_context = msg->u.buffer_from_host.drvbuf.client_context;
+	} else {
+		pr_err("MMAL_MSG_TYPE_BUFFER_TO_HOST with bad magic\n");
+		return;
+	}
+
+	if (msg->h.status != MMAL_MSG_STATUS_SUCCESS) {
+		/* message reception had an error */
+		pr_warn("error %d in reply\n", msg->h.status);
+
+		msg_context->u.bulk.status = msg->h.status;
+
+	} else if (msg->u.buffer_from_host.buffer_header.length == 0) {
+		/* empty buffer */
+		if (msg->u.buffer_from_host.buffer_header.flags &
+		    MMAL_BUFFER_HEADER_FLAG_EOS) {
+			msg_context->u.bulk.status =
+			    dummy_bulk_receive(instance, msg_context);
+			if (msg_context->u.bulk.status == 0)
+				return;	/* successful bulk submission, bulk
+					 * completion will trigger callback
+					 */
+		} else {
+			/* do callback with empty buffer - not EOS though */
+			msg_context->u.bulk.status = 0;
+			msg_context->u.bulk.buffer_used = 0;
+		}
+	} else if (msg->u.buffer_from_host.payload_in_message == 0) {
+		/* data is not in message, queue a bulk receive */
+		msg_context->u.bulk.status =
+		    bulk_receive(instance, msg, msg_context);
+		if (msg_context->u.bulk.status == 0)
+			return;	/* successful bulk submission, bulk
+				 * completion will trigger callback
+				 */
+
+		/* failed to submit buffer, this will end badly */
+		pr_err("error %d on bulk submission\n",
+		       msg_context->u.bulk.status);
+
+	} else if (msg->u.buffer_from_host.payload_in_message <=
+		   MMAL_VC_SHORT_DATA) {
+		/* data payload within message */
+		msg_context->u.bulk.status = inline_receive(instance, msg,
+							    msg_context);
+	} else {
+		pr_err("message with invalid short payload\n");
+
+		/* signal error */
+		msg_context->u.bulk.status = -EINVAL;
+		msg_context->u.bulk.buffer_used =
+		    msg->u.buffer_from_host.payload_in_message;
+	}
+
+	/* replace the buffer header */
+	port_buffer_from_host(instance, msg_context->u.bulk.port);
+
+	/* schedule the port callback */
+	schedule_work(&msg_context->u.bulk.work);
+}
+
+static void bulk_receive_cb(struct vchiq_mmal_instance *instance,
+			    struct mmal_msg_context *msg_context)
+{
+	/* bulk receive operation complete */
+	mutex_unlock(&msg_context->u.bulk.instance->bulk_mutex);
+
+	/* replace the buffer header */
+	port_buffer_from_host(msg_context->u.bulk.instance,
+			      msg_context->u.bulk.port);
+
+	msg_context->u.bulk.status = 0;
+
+	/* schedule the port callback */
+	schedule_work(&msg_context->u.bulk.work);
+}
+
+static void bulk_abort_cb(struct vchiq_mmal_instance *instance,
+			  struct mmal_msg_context *msg_context)
+{
+	pr_err("%s: bulk ABORTED msg_context:%p\n", __func__, msg_context);
+
+	/* bulk receive operation complete */
+	mutex_unlock(&msg_context->u.bulk.instance->bulk_mutex);
+
+	/* replace the buffer header */
+	port_buffer_from_host(msg_context->u.bulk.instance,
+			      msg_context->u.bulk.port);
+
+	msg_context->u.bulk.status = -EINTR;
+
+	schedule_work(&msg_context->u.bulk.work);
+}
+
+/* incoming event service callback */
+static void service_callback(void *param,
+			     const VCHI_CALLBACK_REASON_T reason,
+			     void *bulk_ctx)
+{
+	struct vchiq_mmal_instance *instance = param;
+	int status;
+	u32 msg_len;
+	struct mmal_msg *msg;
+	VCHI_HELD_MSG_T msg_handle;
+
+	if (!instance) {
+		pr_err("Message callback passed NULL instance\n");
+		return;
+	}
+
+	switch (reason) {
+	case VCHI_CALLBACK_MSG_AVAILABLE:
+		status = vchi_msg_hold(instance->handle, (void **)&msg,
+				       &msg_len, VCHI_FLAGS_NONE, &msg_handle);
+		if (status) {
+			pr_err("Unable to dequeue a message (%d)\n", status);
+			break;
+		}
+
+		DBG_DUMP_MSG(msg, msg_len, "<<< reply message");
+
+		/* handling is different for buffer messages */
+		switch (msg->h.type) {
+
+		case MMAL_MSG_TYPE_BUFFER_FROM_HOST:
+			vchi_held_msg_release(&msg_handle);
+			break;
+
+		case MMAL_MSG_TYPE_EVENT_TO_HOST:
+			event_to_host_cb(instance, msg, msg_len);
+			vchi_held_msg_release(&msg_handle);
+
+			break;
+
+		case MMAL_MSG_TYPE_BUFFER_TO_HOST:
+			buffer_to_host_cb(instance, msg, msg_len);
+			vchi_held_msg_release(&msg_handle);
+			break;
+
+		default:
+			/* messages dependant on header context to complete */
+
+			/* todo: the msg.context really ought to be sanity
+			 * checked before we just use it, afaict it comes back
+			 * and is used raw from the videocore. Perhaps it
+			 * should be verified the address lies in the kernel
+			 * address space.
+			 */
+			if (msg->h.context == NULL) {
+				pr_err("received message context was null!\n");
+				vchi_held_msg_release(&msg_handle);
+				break;
+			}
+
+			/* fill in context values */
+			msg->h.context->u.sync.msg_handle = msg_handle;
+			msg->h.context->u.sync.msg = msg;
+			msg->h.context->u.sync.msg_len = msg_len;
+
+			/* todo: should this check (completion_done()
+			 * == 1) for no one waiting? or do we need a
+			 * flag to tell us the completion has been
+			 * interrupted so we can free the message and
+			 * its context. This probably also solves the
+			 * message arriving after interruption todo
+			 * below
+			 */
+
+			/* complete message so caller knows it happened */
+			complete(&msg->h.context->u.sync.cmplt);
+			break;
+		}
+
+		break;
+
+	case VCHI_CALLBACK_BULK_RECEIVED:
+		bulk_receive_cb(instance, bulk_ctx);
+		break;
+
+	case VCHI_CALLBACK_BULK_RECEIVE_ABORTED:
+		bulk_abort_cb(instance, bulk_ctx);
+		break;
+
+	case VCHI_CALLBACK_SERVICE_CLOSED:
+		/* TODO: consider if this requires action if received when
+		 * driver is not explicitly closing the service
+		 */
+		break;
+
+	default:
+		pr_err("Received unhandled message reason %d\n", reason);
+		break;
+	}
+}
+
+static int send_synchronous_mmal_msg(struct vchiq_mmal_instance *instance,
+				     struct mmal_msg *msg,
+				     unsigned int payload_len,
+				     struct mmal_msg **msg_out,
+				     VCHI_HELD_MSG_T *msg_handle_out)
+{
+	struct mmal_msg_context msg_context;
+	int ret;
+
+	/* payload size must not cause message to exceed max size */
+	if (payload_len >
+	    (MMAL_MSG_MAX_SIZE - sizeof(struct mmal_msg_header))) {
+		pr_err("payload length %d exceeds max:%d\n", payload_len,
+			 (MMAL_MSG_MAX_SIZE - sizeof(struct mmal_msg_header)));
+		return -EINVAL;
+	}
+
+	init_completion(&msg_context.u.sync.cmplt);
+
+	msg->h.magic = MMAL_MAGIC;
+	msg->h.context = &msg_context;
+	msg->h.status = 0;
+
+	DBG_DUMP_MSG(msg, (sizeof(struct mmal_msg_header) + payload_len),
+		     ">>> sync message");
+
+	vchi_service_use(instance->handle);
+
+	ret = vchi_msg_queue(instance->handle,
+			     msg,
+			     sizeof(struct mmal_msg_header) + payload_len,
+			     VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+
+	vchi_service_release(instance->handle);
+
+	if (ret) {
+		pr_err("error %d queuing message\n", ret);
+		return ret;
+	}
+
+	ret = wait_for_completion_timeout(&msg_context.u.sync.cmplt, 3*HZ);
+	if (ret <= 0) {
+		pr_err("error %d waiting for sync completion\n", ret);
+		if (ret == 0)
+			ret = -ETIME;
+		/* todo: what happens if the message arrives after aborting */
+		return ret;
+	}
+
+	*msg_out = msg_context.u.sync.msg;
+	*msg_handle_out = msg_context.u.sync.msg_handle;
+
+	return 0;
+}
+
+static void dump_port_info(struct vchiq_mmal_port *port)
+{
+	pr_debug("port handle:0x%x enabled:%d\n", port->handle, port->enabled);
+
+	pr_debug("buffer minimum num:%d size:%d align:%d\n",
+		 port->minimum_buffer.num,
+		 port->minimum_buffer.size, port->minimum_buffer.alignment);
+
+	pr_debug("buffer recommended num:%d size:%d align:%d\n",
+		 port->recommended_buffer.num,
+		 port->recommended_buffer.size,
+		 port->recommended_buffer.alignment);
+
+	pr_debug("buffer current values num:%d size:%d align:%d\n",
+		 port->current_buffer.num,
+		 port->current_buffer.size, port->current_buffer.alignment);
+
+	pr_debug("elementry stream: type:%d encoding:0x%x varient:0x%x\n",
+		 port->format.type,
+		 port->format.encoding, port->format.encoding_variant);
+
+	pr_debug("		    bitrate:%d flags:0x%x\n",
+		 port->format.bitrate, port->format.flags);
+
+	if (port->format.type == MMAL_ES_TYPE_VIDEO) {
+		pr_debug
+		    ("es video format: width:%d height:%d colourspace:0x%x\n",
+		     port->es.video.width, port->es.video.height,
+		     port->es.video.color_space);
+
+		pr_debug("		 : crop xywh %d,%d,%d,%d\n",
+			 port->es.video.crop.x,
+			 port->es.video.crop.y,
+			 port->es.video.crop.width, port->es.video.crop.height);
+		pr_debug("		 : framerate %d/%d  aspect %d/%d\n",
+			 port->es.video.frame_rate.num,
+			 port->es.video.frame_rate.den,
+			 port->es.video.par.num, port->es.video.par.den);
+	}
+}
+
+static void port_to_mmal_msg(struct vchiq_mmal_port *port, struct mmal_port *p)
+{
+
+	/* todo do readonly fields need setting at all? */
+	p->type = port->type;
+	p->index = port->index;
+	p->index_all = 0;
+	p->is_enabled = port->enabled;
+	p->buffer_num_min = port->minimum_buffer.num;
+	p->buffer_size_min = port->minimum_buffer.size;
+	p->buffer_alignment_min = port->minimum_buffer.alignment;
+	p->buffer_num_recommended = port->recommended_buffer.num;
+	p->buffer_size_recommended = port->recommended_buffer.size;
+
+	/* only three writable fields in a port */
+	p->buffer_num = port->current_buffer.num;
+	p->buffer_size = port->current_buffer.size;
+	p->userdata = port;
+}
+
+static int port_info_set(struct vchiq_mmal_instance *instance,
+			 struct vchiq_mmal_port *port)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	pr_debug("setting port info port %p\n", port);
+	if (!port)
+		return -1;
+	dump_port_info(port);
+
+	m.h.type = MMAL_MSG_TYPE_PORT_INFO_SET;
+
+	m.u.port_info_set.component_handle = port->component->handle;
+	m.u.port_info_set.port_type = port->type;
+	m.u.port_info_set.port_index = port->index;
+
+	port_to_mmal_msg(port, &m.u.port_info_set.port);
+
+	/* elementry stream format setup */
+	m.u.port_info_set.format.type = port->format.type;
+	m.u.port_info_set.format.encoding = port->format.encoding;
+	m.u.port_info_set.format.encoding_variant =
+	    port->format.encoding_variant;
+	m.u.port_info_set.format.bitrate = port->format.bitrate;
+	m.u.port_info_set.format.flags = port->format.flags;
+
+	memcpy(&m.u.port_info_set.es, &port->es,
+	       sizeof(union mmal_es_specific_format));
+
+	m.u.port_info_set.format.extradata_size = port->format.extradata_size;
+	memcpy(rmsg->u.port_info_set.extradata, port->format.extradata,
+	       port->format.extradata_size);
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(m.u.port_info_set),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != MMAL_MSG_TYPE_PORT_INFO_SET) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	/* return operation status */
+	ret = -rmsg->u.port_info_get_reply.status;
+
+	pr_debug("%s:result:%d component:0x%x port:%d\n", __func__, ret,
+		 port->component->handle, port->handle);
+
+release_msg:
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+
+}
+
+/* use port info get message to retrive port information */
+static int port_info_get(struct vchiq_mmal_instance *instance,
+			 struct vchiq_mmal_port *port)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	/* port info time */
+	m.h.type = MMAL_MSG_TYPE_PORT_INFO_GET;
+	m.u.port_info_get.component_handle = port->component->handle;
+	m.u.port_info_get.port_type = port->type;
+	m.u.port_info_get.index = port->index;
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(m.u.port_info_get),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != MMAL_MSG_TYPE_PORT_INFO_GET) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	/* return operation status */
+	ret = -rmsg->u.port_info_get_reply.status;
+	if (ret != MMAL_MSG_STATUS_SUCCESS)
+		goto release_msg;
+
+	if (rmsg->u.port_info_get_reply.port.is_enabled == 0)
+		port->enabled = false;
+	else
+		port->enabled = true;
+
+	/* copy the values out of the message */
+	port->handle = rmsg->u.port_info_get_reply.port_handle;
+
+	/* port type and index cached to use on port info set becuase
+	 * it does not use a port handle
+	 */
+	port->type = rmsg->u.port_info_get_reply.port_type;
+	port->index = rmsg->u.port_info_get_reply.port_index;
+
+	port->minimum_buffer.num =
+	    rmsg->u.port_info_get_reply.port.buffer_num_min;
+	port->minimum_buffer.size =
+	    rmsg->u.port_info_get_reply.port.buffer_size_min;
+	port->minimum_buffer.alignment =
+	    rmsg->u.port_info_get_reply.port.buffer_alignment_min;
+
+	port->recommended_buffer.alignment =
+	    rmsg->u.port_info_get_reply.port.buffer_alignment_min;
+	port->recommended_buffer.num =
+	    rmsg->u.port_info_get_reply.port.buffer_num_recommended;
+
+	port->current_buffer.num = rmsg->u.port_info_get_reply.port.buffer_num;
+	port->current_buffer.size =
+	    rmsg->u.port_info_get_reply.port.buffer_size;
+
+	/* stream format */
+	port->format.type = rmsg->u.port_info_get_reply.format.type;
+	port->format.encoding = rmsg->u.port_info_get_reply.format.encoding;
+	port->format.encoding_variant =
+	    rmsg->u.port_info_get_reply.format.encoding_variant;
+	port->format.bitrate = rmsg->u.port_info_get_reply.format.bitrate;
+	port->format.flags = rmsg->u.port_info_get_reply.format.flags;
+
+	/* elementry stream format */
+	memcpy(&port->es,
+	       &rmsg->u.port_info_get_reply.es,
+	       sizeof(union mmal_es_specific_format));
+	port->format.es = &port->es;
+
+	port->format.extradata_size =
+	    rmsg->u.port_info_get_reply.format.extradata_size;
+	memcpy(port->format.extradata,
+	       rmsg->u.port_info_get_reply.extradata,
+	       port->format.extradata_size);
+
+	pr_debug("received port info\n");
+	dump_port_info(port);
+
+release_msg:
+
+	pr_debug("%s:result:%d component:0x%x port:%d\n",
+		 __func__, ret, port->component->handle, port->handle);
+
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+/* create comonent on vc */
+static int create_component(struct vchiq_mmal_instance *instance,
+			    struct vchiq_mmal_component *component,
+			    const char *name)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	/* build component create message */
+	m.h.type = MMAL_MSG_TYPE_COMPONENT_CREATE;
+	m.u.component_create.client_component = component;
+	strncpy(m.u.component_create.name, name,
+		sizeof(m.u.component_create.name));
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(m.u.component_create),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != m.h.type) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	ret = -rmsg->u.component_create_reply.status;
+	if (ret != MMAL_MSG_STATUS_SUCCESS)
+		goto release_msg;
+
+	/* a valid component response received */
+	component->handle = rmsg->u.component_create_reply.component_handle;
+	component->inputs = rmsg->u.component_create_reply.input_num;
+	component->outputs = rmsg->u.component_create_reply.output_num;
+	component->clocks = rmsg->u.component_create_reply.clock_num;
+
+	pr_debug("Component handle:0x%x in:%d out:%d clock:%d\n",
+		 component->handle,
+		 component->inputs, component->outputs, component->clocks);
+
+release_msg:
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+/* destroys a component on vc */
+static int destroy_component(struct vchiq_mmal_instance *instance,
+			     struct vchiq_mmal_component *component)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	m.h.type = MMAL_MSG_TYPE_COMPONENT_DESTROY;
+	m.u.component_destroy.component_handle = component->handle;
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(m.u.component_destroy),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != m.h.type) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	ret = -rmsg->u.component_destroy_reply.status;
+
+release_msg:
+
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+/* enable a component on vc */
+static int enable_component(struct vchiq_mmal_instance *instance,
+			    struct vchiq_mmal_component *component)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	m.h.type = MMAL_MSG_TYPE_COMPONENT_ENABLE;
+	m.u.component_enable.component_handle = component->handle;
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(m.u.component_enable),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != m.h.type) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	ret = -rmsg->u.component_enable_reply.status;
+
+release_msg:
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+/* disable a component on vc */
+static int disable_component(struct vchiq_mmal_instance *instance,
+			     struct vchiq_mmal_component *component)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	m.h.type = MMAL_MSG_TYPE_COMPONENT_DISABLE;
+	m.u.component_disable.component_handle = component->handle;
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(m.u.component_disable),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != m.h.type) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	ret = -rmsg->u.component_disable_reply.status;
+
+release_msg:
+
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+/* get version of mmal implementation */
+static int get_version(struct vchiq_mmal_instance *instance,
+		       u32 *major_out, u32 *minor_out)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	m.h.type = MMAL_MSG_TYPE_GET_VERSION;
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(m.u.version),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != m.h.type) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	*major_out = rmsg->u.version.major;
+	*minor_out = rmsg->u.version.minor;
+
+release_msg:
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+/* do a port action with a port as a parameter */
+static int port_action_port(struct vchiq_mmal_instance *instance,
+			    struct vchiq_mmal_port *port,
+			    enum mmal_msg_port_action_type action_type)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	m.h.type = MMAL_MSG_TYPE_PORT_ACTION;
+	m.u.port_action_port.component_handle = port->component->handle;
+	m.u.port_action_port.port_handle = port->handle;
+	m.u.port_action_port.action = action_type;
+
+	port_to_mmal_msg(port, &m.u.port_action_port.port);
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(m.u.port_action_port),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != MMAL_MSG_TYPE_PORT_ACTION) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	ret = -rmsg->u.port_action_reply.status;
+
+	pr_debug("%s:result:%d component:0x%x port:%d action:%s(%d)\n",
+		 __func__,
+		 ret, port->component->handle, port->handle,
+		 port_action_type_names[action_type], action_type);
+
+release_msg:
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+/* do a port action with handles as parameters */
+static int port_action_handle(struct vchiq_mmal_instance *instance,
+			      struct vchiq_mmal_port *port,
+			      enum mmal_msg_port_action_type action_type,
+			      u32 connect_component_handle,
+			      u32 connect_port_handle)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	m.h.type = MMAL_MSG_TYPE_PORT_ACTION;
+
+	m.u.port_action_handle.component_handle = port->component->handle;
+	m.u.port_action_handle.port_handle = port->handle;
+	m.u.port_action_handle.action = action_type;
+
+	m.u.port_action_handle.connect_component_handle =
+	    connect_component_handle;
+	m.u.port_action_handle.connect_port_handle = connect_port_handle;
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(m.u.port_action_handle),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != MMAL_MSG_TYPE_PORT_ACTION) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	ret = -rmsg->u.port_action_reply.status;
+
+	pr_debug("%s:result:%d component:0x%x port:%d action:%s(%d)" \
+		 " connect component:0x%x connect port:%d\n",
+		 __func__,
+		 ret, port->component->handle, port->handle,
+		 port_action_type_names[action_type],
+		 action_type, connect_component_handle, connect_port_handle);
+
+release_msg:
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+static int port_parameter_set(struct vchiq_mmal_instance *instance,
+			      struct vchiq_mmal_port *port,
+			      u32 parameter_id, void *value, u32 value_size)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	m.h.type = MMAL_MSG_TYPE_PORT_PARAMETER_SET;
+
+	m.u.port_parameter_set.component_handle = port->component->handle;
+	m.u.port_parameter_set.port_handle = port->handle;
+	m.u.port_parameter_set.id = parameter_id;
+	m.u.port_parameter_set.size = (2 * sizeof(u32)) + value_size;
+	memcpy(&m.u.port_parameter_set.value, value, value_size);
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					(4 * sizeof(u32)) + value_size,
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != MMAL_MSG_TYPE_PORT_PARAMETER_SET) {
+		/* got an unexpected message type in reply */
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	ret = -rmsg->u.port_parameter_set_reply.status;
+
+	pr_debug("%s:result:%d component:0x%x port:%d parameter:%d\n",
+		 __func__,
+		 ret, port->component->handle, port->handle, parameter_id);
+
+release_msg:
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+static int port_parameter_get(struct vchiq_mmal_instance *instance,
+			      struct vchiq_mmal_port *port,
+			      u32 parameter_id, void *value, u32 *value_size)
+{
+	int ret;
+	struct mmal_msg m;
+	struct mmal_msg *rmsg;
+	VCHI_HELD_MSG_T rmsg_handle;
+
+	m.h.type = MMAL_MSG_TYPE_PORT_PARAMETER_GET;
+
+	m.u.port_parameter_get.component_handle = port->component->handle;
+	m.u.port_parameter_get.port_handle = port->handle;
+	m.u.port_parameter_get.id = parameter_id;
+	m.u.port_parameter_get.size = (2 * sizeof(u32)) + *value_size;
+
+	ret = send_synchronous_mmal_msg(instance, &m,
+					sizeof(struct
+					       mmal_msg_port_parameter_get),
+					&rmsg, &rmsg_handle);
+	if (ret)
+		return ret;
+
+	if (rmsg->h.type != MMAL_MSG_TYPE_PORT_PARAMETER_GET) {
+		/* got an unexpected message type in reply */
+		pr_err("Incorrect reply type %d\n", rmsg->h.type);
+		ret = -EINVAL;
+		goto release_msg;
+	}
+
+	ret = -rmsg->u.port_parameter_get_reply.status;
+	if (ret) {
+		/* Copy only as much as we have space for
+		 * but report true size of parameter
+		 */
+		memcpy(value, &rmsg->u.port_parameter_get_reply.value,
+		       *value_size);
+		*value_size = rmsg->u.port_parameter_get_reply.size;
+	} else
+		memcpy(value, &rmsg->u.port_parameter_get_reply.value,
+		       rmsg->u.port_parameter_get_reply.size);
+
+	pr_debug("%s:result:%d component:0x%x port:%d parameter:%d\n", __func__,
+	        ret, port->component->handle, port->handle, parameter_id);
+
+release_msg:
+	vchi_held_msg_release(&rmsg_handle);
+
+	return ret;
+}
+
+/* disables a port and drains buffers from it */
+static int port_disable(struct vchiq_mmal_instance *instance,
+			struct vchiq_mmal_port *port)
+{
+	int ret;
+	struct list_head *q, *buf_head;
+	unsigned long flags = 0;
+
+	if (!port->enabled)
+		return 0;
+
+	port->enabled = false;
+
+	ret = port_action_port(instance, port,
+			       MMAL_MSG_PORT_ACTION_TYPE_DISABLE);
+	if (ret == 0) {
+
+		/* drain all queued buffers on port */
+		spin_lock_irqsave(&port->slock, flags);
+
+		list_for_each_safe(buf_head, q, &port->buffers) {
+			struct mmal_buffer *mmalbuf;
+			mmalbuf = list_entry(buf_head, struct mmal_buffer,
+					     list);
+			list_del(buf_head);
+			if (port->buffer_cb)
+				port->buffer_cb(instance,
+						port, 0, mmalbuf, 0, 0,
+						MMAL_TIME_UNKNOWN,
+						MMAL_TIME_UNKNOWN);
+		}
+
+		spin_unlock_irqrestore(&port->slock, flags);
+
+		ret = port_info_get(instance, port);
+	}
+
+	return ret;
+}
+
+/* enable a port */
+static int port_enable(struct vchiq_mmal_instance *instance,
+		       struct vchiq_mmal_port *port)
+{
+	unsigned int hdr_count;
+	struct list_head *buf_head;
+	int ret;
+
+	if (port->enabled)
+		return 0;
+
+	/* ensure there are enough buffers queued to cover the buffer headers */
+	if (port->buffer_cb != NULL) {
+		hdr_count = 0;
+		list_for_each(buf_head, &port->buffers) {
+			hdr_count++;
+		}
+		if (hdr_count < port->current_buffer.num)
+			return -ENOSPC;
+	}
+
+	ret = port_action_port(instance, port,
+			       MMAL_MSG_PORT_ACTION_TYPE_ENABLE);
+	if (ret)
+		goto done;
+
+	port->enabled = true;
+
+	if (port->buffer_cb) {
+		/* send buffer headers to videocore */
+		hdr_count = 1;
+		list_for_each(buf_head, &port->buffers) {
+			struct mmal_buffer *mmalbuf;
+			mmalbuf = list_entry(buf_head, struct mmal_buffer,
+					     list);
+			ret = buffer_from_host(instance, port, mmalbuf);
+			if (ret)
+				goto done;
+
+			hdr_count++;
+			if (hdr_count > port->current_buffer.num)
+				break;
+		}
+	}
+
+	ret = port_info_get(instance, port);
+
+done:
+	return ret;
+}
+
+/* ------------------------------------------------------------------
+ * Exported API
+ *------------------------------------------------------------------*/
+
+int vchiq_mmal_port_set_format(struct vchiq_mmal_instance *instance,
+			       struct vchiq_mmal_port *port)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	ret = port_info_set(instance, port);
+	if (ret)
+		goto release_unlock;
+
+	/* read what has actually been set */
+	ret = port_info_get(instance, port);
+
+release_unlock:
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+
+}
+
+int vchiq_mmal_port_parameter_set(struct vchiq_mmal_instance *instance,
+				  struct vchiq_mmal_port *port,
+				  u32 parameter, void *value, u32 value_size)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	ret = port_parameter_set(instance, port, parameter, value, value_size);
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+int vchiq_mmal_port_parameter_get(struct vchiq_mmal_instance *instance,
+				  struct vchiq_mmal_port *port,
+				  u32 parameter, void *value, u32 *value_size)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	ret = port_parameter_get(instance, port, parameter, value, value_size);
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+/* enable a port
+ *
+ * enables a port and queues buffers for satisfying callbacks if we
+ * provide a callback handler
+ */
+int vchiq_mmal_port_enable(struct vchiq_mmal_instance *instance,
+			   struct vchiq_mmal_port *port,
+			   vchiq_mmal_buffer_cb buffer_cb)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	/* already enabled - noop */
+	if (port->enabled) {
+		ret = 0;
+		goto unlock;
+	}
+
+	port->buffer_cb = buffer_cb;
+
+	ret = port_enable(instance, port);
+
+unlock:
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+int vchiq_mmal_port_disable(struct vchiq_mmal_instance *instance,
+			    struct vchiq_mmal_port *port)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	if (!port->enabled) {
+		mutex_unlock(&instance->vchiq_mutex);
+		return 0;
+	}
+
+	ret = port_disable(instance, port);
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+/* ports will be connected in a tunneled manner so data buffers
+ * are not handled by client.
+ */
+int vchiq_mmal_port_connect_tunnel(struct vchiq_mmal_instance *instance,
+				   struct vchiq_mmal_port *src,
+				   struct vchiq_mmal_port *dst)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	/* disconnect ports if connected */
+	if (src->connected != NULL) {
+		ret = port_disable(instance, src);
+		if (ret) {
+			pr_err("failed disabling src port(%d)\n", ret);
+			goto release_unlock;
+		}
+
+		/* do not need to disable the destination port as they
+		 * are connected and it is done automatically
+		 */
+
+		ret = port_action_handle(instance, src,
+					 MMAL_MSG_PORT_ACTION_TYPE_DISCONNECT,
+					 src->connected->component->handle,
+					 src->connected->handle);
+		if (ret < 0) {
+			pr_err("failed disconnecting src port\n");
+			goto release_unlock;
+		}
+		src->connected->enabled = false;
+		src->connected = NULL;
+	}
+
+	if (dst == NULL) {
+		/* do not make new connection */
+		ret = 0;
+		pr_debug("not making new connection\n");
+		goto release_unlock;
+	}
+
+	/* copy src port format to dst */
+	dst->format.encoding = src->format.encoding;
+	dst->es.video.width = src->es.video.width;
+	dst->es.video.height = src->es.video.height;
+	dst->es.video.crop.x = src->es.video.crop.x;
+	dst->es.video.crop.y = src->es.video.crop.y;
+	dst->es.video.crop.width = src->es.video.crop.width;
+	dst->es.video.crop.height = src->es.video.crop.height;
+	dst->es.video.frame_rate.num = src->es.video.frame_rate.num;
+	dst->es.video.frame_rate.den = src->es.video.frame_rate.den;
+
+	/* set new format */
+	ret = port_info_set(instance, dst);
+	if (ret) {
+		pr_debug("setting port info failed\n");
+		goto release_unlock;
+	}
+
+	/* read what has actually been set */
+	ret = port_info_get(instance, dst);
+	if (ret) {
+		pr_debug("read back port info failed\n");
+		goto release_unlock;
+	}
+
+	/* connect two ports together */
+	ret = port_action_handle(instance, src,
+				 MMAL_MSG_PORT_ACTION_TYPE_CONNECT,
+				 dst->component->handle, dst->handle);
+	if (ret < 0) {
+		pr_debug("connecting port %d:%d to %d:%d failed\n",
+			 src->component->handle, src->handle,
+			 dst->component->handle, dst->handle);
+		goto release_unlock;
+	}
+	src->connected = dst;
+
+release_unlock:
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+int vchiq_mmal_submit_buffer(struct vchiq_mmal_instance *instance,
+			     struct vchiq_mmal_port *port,
+			     struct mmal_buffer *buffer)
+{
+	unsigned long flags = 0;
+
+	spin_lock_irqsave(&port->slock, flags);
+	list_add_tail(&buffer->list, &port->buffers);
+	spin_unlock_irqrestore(&port->slock, flags);
+
+	/* the port previously underflowed because it was missing a
+	 * mmal_buffer which has just been added, submit that buffer
+	 * to the mmal service.
+	 */
+	if (port->buffer_underflow) {
+		port_buffer_from_host(instance, port);
+		port->buffer_underflow--;
+	}
+
+	return 0;
+}
+
+/* Initialise a mmal component and its ports
+ *
+ */
+int vchiq_mmal_component_init(struct vchiq_mmal_instance *instance,
+			      const char *name,
+			      struct vchiq_mmal_component **component_out)
+{
+	int ret;
+	int idx;		/* port index */
+	struct vchiq_mmal_component *component;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	if (instance->component_idx == VCHIQ_MMAL_MAX_COMPONENTS) {
+		ret = -EINVAL;	/* todo is this correct error? */
+		goto unlock;
+	}
+
+	component = &instance->component[instance->component_idx];
+
+	ret = create_component(instance, component, name);
+	if (ret < 0)
+		goto unlock;
+
+	/* ports info needs gathering */
+	component->control.type = MMAL_PORT_TYPE_CONTROL;
+	component->control.index = 0;
+	component->control.component = component;
+	spin_lock_init(&component->control.slock);
+	INIT_LIST_HEAD(&component->control.buffers);
+	ret = port_info_get(instance, &component->control);
+	if (ret < 0)
+		goto release_component;
+
+	for (idx = 0; idx < component->inputs; idx++) {
+		component->input[idx].type = MMAL_PORT_TYPE_INPUT;
+		component->input[idx].index = idx;
+		component->input[idx].component = component;
+		spin_lock_init(&component->input[idx].slock);
+		INIT_LIST_HEAD(&component->input[idx].buffers);
+		ret = port_info_get(instance, &component->input[idx]);
+		if (ret < 0)
+			goto release_component;
+	}
+
+	for (idx = 0; idx < component->outputs; idx++) {
+		component->output[idx].type = MMAL_PORT_TYPE_OUTPUT;
+		component->output[idx].index = idx;
+		component->output[idx].component = component;
+		spin_lock_init(&component->output[idx].slock);
+		INIT_LIST_HEAD(&component->output[idx].buffers);
+		ret = port_info_get(instance, &component->output[idx]);
+		if (ret < 0)
+			goto release_component;
+	}
+
+	for (idx = 0; idx < component->clocks; idx++) {
+		component->clock[idx].type = MMAL_PORT_TYPE_CLOCK;
+		component->clock[idx].index = idx;
+		component->clock[idx].component = component;
+		spin_lock_init(&component->clock[idx].slock);
+		INIT_LIST_HEAD(&component->clock[idx].buffers);
+		ret = port_info_get(instance, &component->clock[idx]);
+		if (ret < 0)
+			goto release_component;
+	}
+
+	instance->component_idx++;
+
+	*component_out = component;
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return 0;
+
+release_component:
+	destroy_component(instance, component);
+unlock:
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+/*
+ * cause a mmal component to be destroyed
+ */
+int vchiq_mmal_component_finalise(struct vchiq_mmal_instance *instance,
+				  struct vchiq_mmal_component *component)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	if (component->enabled)
+		ret = disable_component(instance, component);
+
+	ret = destroy_component(instance, component);
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+/*
+ * cause a mmal component to be enabled
+ */
+int vchiq_mmal_component_enable(struct vchiq_mmal_instance *instance,
+				struct vchiq_mmal_component *component)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	if (component->enabled) {
+		mutex_unlock(&instance->vchiq_mutex);
+		return 0;
+	}
+
+	ret = enable_component(instance, component);
+	if (ret == 0)
+		component->enabled = true;
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+/*
+ * cause a mmal component to be enabled
+ */
+int vchiq_mmal_component_disable(struct vchiq_mmal_instance *instance,
+				 struct vchiq_mmal_component *component)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	if (!component->enabled) {
+		mutex_unlock(&instance->vchiq_mutex);
+		return 0;
+	}
+
+	ret = disable_component(instance, component);
+	if (ret == 0)
+		component->enabled = false;
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+int vchiq_mmal_version(struct vchiq_mmal_instance *instance,
+		       u32 *major_out, u32 *minor_out)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	ret = get_version(instance, major_out, minor_out);
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	return ret;
+}
+
+int vchiq_mmal_finalise(struct vchiq_mmal_instance *instance)
+{
+	int status = 0;
+
+	if (instance == NULL)
+		return -EINVAL;
+
+	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+		return -EINTR;
+
+	vchi_service_use(instance->handle);
+
+	status = vchi_service_close(instance->handle);
+	if (status != 0)
+		pr_err("mmal-vchiq: VCHIQ close failed");
+
+	mutex_unlock(&instance->vchiq_mutex);
+
+	vfree(instance->bulk_scratch);
+
+	kfree(instance);
+
+	return status;
+}
+
+int vchiq_mmal_init(struct vchiq_mmal_instance **out_instance)
+{
+	int status;
+	struct vchiq_mmal_instance *instance;
+	static VCHI_CONNECTION_T *vchi_connection;
+	static VCHI_INSTANCE_T vchi_instance;
+	SERVICE_CREATION_T params = {
+		VCHI_VERSION_EX(VC_MMAL_VER, VC_MMAL_MIN_VER),
+		VC_MMAL_SERVER_NAME,
+		vchi_connection,
+		0,		/* rx fifo size (unused) */
+		0,		/* tx fifo size (unused) */
+		service_callback,
+		NULL,		/* service callback parameter */
+		1,		/* unaligned bulk receives */
+		1,		/* unaligned bulk transmits */
+		0		/* want crc check on bulk transfers */
+	};
+
+	/* compile time checks to ensure structure size as they are
+	 * directly (de)serialised from memory.
+	 */
+
+	/* ensure the header structure has packed to the correct size */
+	BUILD_BUG_ON(sizeof(struct mmal_msg_header) != 24);
+
+	/* ensure message structure does not exceed maximum length */
+	BUILD_BUG_ON(sizeof(struct mmal_msg) > MMAL_MSG_MAX_SIZE);
+
+	/* mmal port struct is correct size */
+	BUILD_BUG_ON(sizeof(struct mmal_port) != 64);
+
+	/* create a vchi instance */
+	status = vchi_initialise(&vchi_instance);
+	if (status) {
+		pr_err("Failed to initialise VCHI instance (status=%d)\n",
+		       status);
+		return -EIO;
+	}
+
+	status = vchi_connect(NULL, 0, vchi_instance);
+	if (status) {
+		pr_err("Failed to connect VCHI instance (status=%d)\n", status);
+		return -EIO;
+	}
+
+	instance = kmalloc(sizeof(*instance), GFP_KERNEL);
+	memset(instance, 0, sizeof(*instance));
+
+	mutex_init(&instance->vchiq_mutex);
+	mutex_init(&instance->bulk_mutex);
+
+	instance->bulk_scratch = vmalloc(PAGE_SIZE);
+
+	params.callback_param = instance;
+
+	status = vchi_service_open(vchi_instance, &params, &instance->handle);
+	if (status) {
+		pr_err("Failed to open VCHI service connection (status=%d)\n",
+		       status);
+		goto err_close_services;
+	}
+
+	vchi_service_release(instance->handle);
+
+	*out_instance = instance;
+
+	return 0;
+
+err_close_services:
+
+	vchi_service_close(instance->handle);
+	vfree(instance->bulk_scratch);
+	kfree(instance);
+	return -ENODEV;
+}
diff -Nur linux-3.18.10/drivers/media/platform/bcm2835/mmal-vchiq.h linux-rpi/drivers/media/platform/bcm2835/mmal-vchiq.h
--- linux-3.18.10/drivers/media/platform/bcm2835/mmal-vchiq.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/media/platform/bcm2835/mmal-vchiq.h	2015-03-26 11:46:50.408234586 +0100
@@ -0,0 +1,178 @@
+/*
+ * Broadcom BM2835 V4L2 driver
+ *
+ * Copyright © 2013 Raspberry Pi (Trading) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
+ *          Dave Stevenson <dsteve@broadcom.com>
+ *          Simon Mellor <simellor@broadcom.com>
+ *          Luke Diamand <luked@broadcom.com>
+ *
+ * MMAL interface to VCHIQ message passing
+ */
+
+#ifndef MMAL_VCHIQ_H
+#define MMAL_VCHIQ_H
+
+#include "mmal-msg-format.h"
+
+#define MAX_PORT_COUNT 4
+
+/* Maximum size of the format extradata. */
+#define MMAL_FORMAT_EXTRADATA_MAX_SIZE 128
+
+struct vchiq_mmal_instance;
+
+enum vchiq_mmal_es_type {
+	MMAL_ES_TYPE_UNKNOWN,     /**< Unknown elementary stream type */
+	MMAL_ES_TYPE_CONTROL,     /**< Elementary stream of control commands */
+	MMAL_ES_TYPE_AUDIO,       /**< Audio elementary stream */
+	MMAL_ES_TYPE_VIDEO,       /**< Video elementary stream */
+	MMAL_ES_TYPE_SUBPICTURE   /**< Sub-picture elementary stream */
+};
+
+/* rectangle, used lots so it gets its own struct */
+struct vchiq_mmal_rect {
+	s32 x;
+	s32 y;
+	s32 width;
+	s32 height;
+};
+
+struct vchiq_mmal_port_buffer {
+	unsigned int num; /* number of buffers */
+	u32 size; /* size of buffers */
+	u32 alignment; /* alignment of buffers */
+};
+
+struct vchiq_mmal_port;
+
+typedef void (*vchiq_mmal_buffer_cb)(
+		struct vchiq_mmal_instance  *instance,
+		struct vchiq_mmal_port *port,
+		int status, struct mmal_buffer *buffer,
+		unsigned long length, u32 mmal_flags, s64 dts, s64 pts);
+
+struct vchiq_mmal_port {
+	bool enabled;
+	u32 handle;
+	u32 type; /* port type, cached to use on port info set */
+	u32 index; /* port index, cached to use on port info set */
+
+	/* component port belongs to, allows simple deref */
+	struct vchiq_mmal_component *component;
+
+	struct vchiq_mmal_port *connected; /* port conencted to */
+
+	/* buffer info */
+	struct vchiq_mmal_port_buffer minimum_buffer;
+	struct vchiq_mmal_port_buffer recommended_buffer;
+	struct vchiq_mmal_port_buffer current_buffer;
+
+	/* stream format */
+	struct mmal_es_format format;
+	/* elementry stream format */
+	union mmal_es_specific_format es;
+
+	/* data buffers to fill */
+	struct list_head buffers;
+	/* lock to serialise adding and removing buffers from list */
+	spinlock_t slock;
+	/* count of how many buffer header refils have failed because
+	 * there was no buffer to satisfy them
+	 */
+	int buffer_underflow;
+	/* callback on buffer completion */
+	vchiq_mmal_buffer_cb buffer_cb;
+	/* callback context */
+	void *cb_ctx;
+};
+
+struct vchiq_mmal_component {
+	bool enabled;
+	u32 handle;  /* VideoCore handle for component */
+	u32 inputs;  /* Number of input ports */
+	u32 outputs; /* Number of output ports */
+	u32 clocks;  /* Number of clock ports */
+	struct vchiq_mmal_port control; /* control port */
+	struct vchiq_mmal_port input[MAX_PORT_COUNT]; /* input ports */
+	struct vchiq_mmal_port output[MAX_PORT_COUNT]; /* output ports */
+	struct vchiq_mmal_port clock[MAX_PORT_COUNT]; /* clock ports */
+};
+
+
+int vchiq_mmal_init(struct vchiq_mmal_instance **out_instance);
+int vchiq_mmal_finalise(struct vchiq_mmal_instance *instance);
+
+/* Initialise a mmal component and its ports
+*
+*/
+int vchiq_mmal_component_init(
+		struct vchiq_mmal_instance *instance,
+		const char *name,
+		struct vchiq_mmal_component **component_out);
+
+int vchiq_mmal_component_finalise(
+		struct vchiq_mmal_instance *instance,
+		struct vchiq_mmal_component *component);
+
+int vchiq_mmal_component_enable(
+		struct vchiq_mmal_instance *instance,
+		struct vchiq_mmal_component *component);
+
+int vchiq_mmal_component_disable(
+		struct vchiq_mmal_instance *instance,
+		struct vchiq_mmal_component *component);
+
+
+
+/* enable a mmal port
+ *
+ * enables a port and if a buffer callback provided enque buffer
+ * headers as apropriate for the port.
+ */
+int vchiq_mmal_port_enable(
+		struct vchiq_mmal_instance *instance,
+		struct vchiq_mmal_port *port,
+		vchiq_mmal_buffer_cb buffer_cb);
+
+/* disable a port
+ *
+ * disable a port will dequeue any pending buffers
+ */
+int vchiq_mmal_port_disable(struct vchiq_mmal_instance *instance,
+			   struct vchiq_mmal_port *port);
+
+
+int vchiq_mmal_port_parameter_set(struct vchiq_mmal_instance *instance,
+				  struct vchiq_mmal_port *port,
+				  u32 parameter,
+				  void *value,
+				  u32 value_size);
+
+int vchiq_mmal_port_parameter_get(struct vchiq_mmal_instance *instance,
+				  struct vchiq_mmal_port *port,
+				  u32 parameter,
+				  void *value,
+				  u32 *value_size);
+
+int vchiq_mmal_port_set_format(struct vchiq_mmal_instance *instance,
+			       struct vchiq_mmal_port *port);
+
+int vchiq_mmal_port_connect_tunnel(struct vchiq_mmal_instance *instance,
+			    struct vchiq_mmal_port *src,
+			    struct vchiq_mmal_port *dst);
+
+int vchiq_mmal_version(struct vchiq_mmal_instance *instance,
+		       u32 *major_out,
+		       u32 *minor_out);
+
+int vchiq_mmal_submit_buffer(struct vchiq_mmal_instance *instance,
+			     struct vchiq_mmal_port *port,
+			     struct mmal_buffer *buf);
+
+#endif /* MMAL_VCHIQ_H */
diff -Nur linux-3.18.10/drivers/media/platform/Kconfig linux-rpi/drivers/media/platform/Kconfig
--- linux-3.18.10/drivers/media/platform/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/media/platform/Kconfig	2015-03-26 11:46:50.408234586 +0100
@@ -124,6 +124,7 @@
 source "drivers/media/platform/soc_camera/Kconfig"
 source "drivers/media/platform/exynos4-is/Kconfig"
 source "drivers/media/platform/s5p-tv/Kconfig"
+source "drivers/media/platform/bcm2835/Kconfig"
 
 endif # V4L_PLATFORM_DRIVERS
 
diff -Nur linux-3.18.10/drivers/media/platform/Makefile linux-rpi/drivers/media/platform/Makefile
--- linux-3.18.10/drivers/media/platform/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/media/platform/Makefile	2015-03-26 11:46:50.408234586 +0100
@@ -49,4 +49,6 @@
 
 obj-y	+= omap/
 
+obj-$(CONFIG_VIDEO_BCM2835)		+= bcm2835/
+
 ccflags-y += -I$(srctree)/drivers/media/i2c
diff -Nur linux-3.18.10/drivers/media/usb/dvb-usb-v2/rtl28xxu.c linux-rpi/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
--- linux-3.18.10/drivers/media/usb/dvb-usb-v2/rtl28xxu.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/media/usb/dvb-usb-v2/rtl28xxu.c	2015-03-26 11:46:50.560234730 +0100
@@ -1531,6 +1531,10 @@
 		&rtl2832u_props, "Compro VideoMate U620F", NULL) },
 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd394,
 		&rtl2832u_props, "MaxMedia HU394-T", NULL) },
+	{ DVB_USB_DEVICE(USB_VID_GTEK, 0xb803 /*USB_PID_AUGUST_DVBT205*/,
+		&rtl2832u_props, "August DVB-T 205", NULL) },
+	{ DVB_USB_DEVICE(USB_VID_GTEK, 0xa803 /*USB_PID_AUGUST_DVBT205*/,
+		&rtl2832u_props, "August DVB-T 205", NULL) },
 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6a03,
 		&rtl2832u_props, "Leadtek WinFast DTV Dongle mini", NULL) },
 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_CPYTO_REDI_PC50A,
diff -Nur linux-3.18.10/drivers/misc/Kconfig linux-rpi/drivers/misc/Kconfig
--- linux-3.18.10/drivers/misc/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/misc/Kconfig	2015-03-26 11:46:50.980235118 +0100
@@ -524,6 +524,7 @@
 source "drivers/misc/altera-stapl/Kconfig"
 source "drivers/misc/mei/Kconfig"
 source "drivers/misc/vmw_vmci/Kconfig"
+source "drivers/misc/vc04_services/Kconfig"
 source "drivers/misc/mic/Kconfig"
 source "drivers/misc/genwqe/Kconfig"
 source "drivers/misc/echo/Kconfig"
diff -Nur linux-3.18.10/drivers/misc/Makefile linux-rpi/drivers/misc/Makefile
--- linux-3.18.10/drivers/misc/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/misc/Makefile	2015-03-26 11:46:50.980235118 +0100
@@ -51,6 +51,7 @@
 obj-$(CONFIG_VMWARE_VMCI)	+= vmw_vmci/
 obj-$(CONFIG_LATTICE_ECP3_CONFIG)	+= lattice-ecp3-config.o
 obj-$(CONFIG_SRAM)		+= sram.o
+obj-$(CONFIG_BCM2708_VCHIQ)	+= vc04_services/
 obj-y				+= mic/
 obj-$(CONFIG_GENWQE)		+= genwqe/
 obj-$(CONFIG_ECHO)		+= echo/
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchi/connections/connection.h linux-rpi/drivers/misc/vc04_services/interface/vchi/connections/connection.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchi/connections/connection.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchi/connections/connection.h	2015-03-26 11:46:50.996235135 +0100
@@ -0,0 +1,328 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CONNECTION_H_
+#define CONNECTION_H_
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/semaphore.h>
+
+#include "interface/vchi/vchi_cfg_internal.h"
+#include "interface/vchi/vchi_common.h"
+#include "interface/vchi/message_drivers/message.h"
+
+/******************************************************************************
+ Global defs
+ *****************************************************************************/
+
+// Opaque handle for a connection / service pair
+typedef struct opaque_vchi_connection_connected_service_handle_t *VCHI_CONNECTION_SERVICE_HANDLE_T;
+
+// opaque handle to the connection state information
+typedef struct opaque_vchi_connection_info_t VCHI_CONNECTION_STATE_T;
+
+typedef struct vchi_connection_t VCHI_CONNECTION_T;
+
+
+/******************************************************************************
+ API
+ *****************************************************************************/
+
+// Routine to init a connection with a particular low level driver
+typedef VCHI_CONNECTION_STATE_T * (*VCHI_CONNECTION_INIT_T)( struct vchi_connection_t * connection,
+                                                             const VCHI_MESSAGE_DRIVER_T * driver );
+
+// Routine to control CRC enabling at a connection level
+typedef int32_t (*VCHI_CONNECTION_CRC_CONTROL_T)( VCHI_CONNECTION_STATE_T *state_handle,
+                                                  VCHI_CRC_CONTROL_T control );
+
+// Routine to create a service
+typedef int32_t (*VCHI_CONNECTION_SERVICE_CONNECT_T)( VCHI_CONNECTION_STATE_T *state_handle,
+                                                      int32_t service_id,
+                                                      uint32_t rx_fifo_size,
+                                                      uint32_t tx_fifo_size,
+                                                      int server,
+                                                      VCHI_CALLBACK_T callback,
+                                                      void *callback_param,
+                                                      int32_t want_crc,
+                                                      int32_t want_unaligned_bulk_rx,
+                                                      int32_t want_unaligned_bulk_tx,
+                                                      VCHI_CONNECTION_SERVICE_HANDLE_T *service_handle );
+
+// Routine to close a service
+typedef int32_t (*VCHI_CONNECTION_SERVICE_DISCONNECT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle );
+
+// Routine to queue a message
+typedef int32_t (*VCHI_CONNECTION_SERVICE_QUEUE_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                            const void *data,
+                                                            uint32_t data_size,
+                                                            VCHI_FLAGS_T flags,
+                                                            void *msg_handle );
+
+// scatter-gather (vector) message queueing
+typedef int32_t (*VCHI_CONNECTION_SERVICE_QUEUE_MESSAGEV_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                             VCHI_MSG_VECTOR_T *vector,
+                                                             uint32_t count,
+                                                             VCHI_FLAGS_T flags,
+                                                             void *msg_handle );
+
+// Routine to dequeue a message
+typedef int32_t (*VCHI_CONNECTION_SERVICE_DEQUEUE_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                              void *data,
+                                                              uint32_t max_data_size_to_read,
+                                                              uint32_t *actual_msg_size,
+                                                              VCHI_FLAGS_T flags );
+
+// Routine to peek at a message
+typedef int32_t (*VCHI_CONNECTION_SERVICE_PEEK_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                           void **data,
+                                                           uint32_t *msg_size,
+                                                           VCHI_FLAGS_T flags );
+
+// Routine to hold a message
+typedef int32_t (*VCHI_CONNECTION_SERVICE_HOLD_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                           void **data,
+                                                           uint32_t *msg_size,
+                                                           VCHI_FLAGS_T flags,
+                                                           void **message_handle );
+
+// Routine to initialise a received message iterator
+typedef int32_t (*VCHI_CONNECTION_SERVICE_LOOKAHEAD_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                                VCHI_MSG_ITER_T *iter,
+                                                                VCHI_FLAGS_T flags );
+
+// Routine to release a held message
+typedef int32_t (*VCHI_CONNECTION_HELD_MSG_RELEASE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                       void *message_handle );
+
+// Routine to get info on a held message
+typedef int32_t (*VCHI_CONNECTION_HELD_MSG_INFO_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                    void *message_handle,
+                                                    void **data,
+                                                    int32_t *msg_size,
+                                                    uint32_t *tx_timestamp,
+                                                    uint32_t *rx_timestamp );
+
+// Routine to check whether the iterator has a next message
+typedef int32_t (*VCHI_CONNECTION_MSG_ITER_HAS_NEXT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service,
+                                                       const VCHI_MSG_ITER_T *iter );
+
+// Routine to advance the iterator
+typedef int32_t (*VCHI_CONNECTION_MSG_ITER_NEXT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service,
+                                                    VCHI_MSG_ITER_T *iter,
+                                                    void **data,
+                                                    uint32_t *msg_size );
+
+// Routine to remove the last message returned by the iterator
+typedef int32_t (*VCHI_CONNECTION_MSG_ITER_REMOVE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service,
+                                                      VCHI_MSG_ITER_T *iter );
+
+// Routine to hold the last message returned by the iterator
+typedef int32_t (*VCHI_CONNECTION_MSG_ITER_HOLD_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service,
+                                                    VCHI_MSG_ITER_T *iter,
+                                                    void **msg_handle );
+
+// Routine to transmit bulk data
+typedef int32_t (*VCHI_CONNECTION_BULK_QUEUE_TRANSMIT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                          const void *data_src,
+                                                          uint32_t data_size,
+                                                          VCHI_FLAGS_T flags,
+                                                          void *bulk_handle );
+
+// Routine to receive data
+typedef int32_t (*VCHI_CONNECTION_BULK_QUEUE_RECEIVE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
+                                                         void *data_dst,
+                                                         uint32_t data_size,
+                                                         VCHI_FLAGS_T flags,
+                                                         void *bulk_handle );
+
+// Routine to report if a server is available
+typedef int32_t (*VCHI_CONNECTION_SERVER_PRESENT)( VCHI_CONNECTION_STATE_T *state, int32_t service_id, int32_t peer_flags );
+
+// Routine to report the number of RX slots available
+typedef int (*VCHI_CONNECTION_RX_SLOTS_AVAILABLE)( const VCHI_CONNECTION_STATE_T *state );
+
+// Routine to report the RX slot size
+typedef uint32_t (*VCHI_CONNECTION_RX_SLOT_SIZE)( const VCHI_CONNECTION_STATE_T *state );
+
+// Callback to indicate that the other side has added a buffer to the rx bulk DMA FIFO
+typedef void (*VCHI_CONNECTION_RX_BULK_BUFFER_ADDED)(VCHI_CONNECTION_STATE_T *state,
+                                                     int32_t service,
+                                                     uint32_t length,
+                                                     MESSAGE_TX_CHANNEL_T channel,
+                                                     uint32_t channel_params,
+                                                     uint32_t data_length,
+                                                     uint32_t data_offset);
+
+// Callback to inform a service that a Xon or Xoff message has been received
+typedef void (*VCHI_CONNECTION_FLOW_CONTROL)(VCHI_CONNECTION_STATE_T *state, int32_t service_id, int32_t xoff);
+
+// Callback to inform a service that a server available reply message has been received
+typedef void (*VCHI_CONNECTION_SERVER_AVAILABLE_REPLY)(VCHI_CONNECTION_STATE_T *state, int32_t service_id, uint32_t flags);
+
+// Callback to indicate that bulk auxiliary messages have arrived
+typedef void (*VCHI_CONNECTION_BULK_AUX_RECEIVED)(VCHI_CONNECTION_STATE_T *state);
+
+// Callback to indicate that bulk auxiliary messages have arrived
+typedef void (*VCHI_CONNECTION_BULK_AUX_TRANSMITTED)(VCHI_CONNECTION_STATE_T *state, void *handle);
+
+// Callback with all the connection info you require
+typedef void (*VCHI_CONNECTION_INFO)(VCHI_CONNECTION_STATE_T *state, uint32_t protocol_version, uint32_t slot_size, uint32_t num_slots, uint32_t min_bulk_size);
+
+// Callback to inform of a disconnect
+typedef void (*VCHI_CONNECTION_DISCONNECT)(VCHI_CONNECTION_STATE_T *state, uint32_t flags);
+
+// Callback to inform of a power control request
+typedef void (*VCHI_CONNECTION_POWER_CONTROL)(VCHI_CONNECTION_STATE_T *state, MESSAGE_TX_CHANNEL_T channel, int32_t enable);
+
+// allocate memory suitably aligned for this connection
+typedef void * (*VCHI_BUFFER_ALLOCATE)(VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, uint32_t * length);
+
+// free memory allocated by buffer_allocate
+typedef void   (*VCHI_BUFFER_FREE)(VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, void * address);
+
+
+/******************************************************************************
+ System driver struct
+ *****************************************************************************/
+
+struct opaque_vchi_connection_api_t
+{
+   // Routine to init the connection
+   VCHI_CONNECTION_INIT_T                      init;
+
+   // Connection-level CRC control
+   VCHI_CONNECTION_CRC_CONTROL_T               crc_control;
+
+   // Routine to connect to or create service
+   VCHI_CONNECTION_SERVICE_CONNECT_T           service_connect;
+
+   // Routine to disconnect from a service
+   VCHI_CONNECTION_SERVICE_DISCONNECT_T        service_disconnect;
+
+   // Routine to queue a message
+   VCHI_CONNECTION_SERVICE_QUEUE_MESSAGE_T     service_queue_msg;
+
+   // scatter-gather (vector) message queue
+   VCHI_CONNECTION_SERVICE_QUEUE_MESSAGEV_T    service_queue_msgv;
+
+   // Routine to dequeue a message
+   VCHI_CONNECTION_SERVICE_DEQUEUE_MESSAGE_T   service_dequeue_msg;
+
+   // Routine to peek at a message
+   VCHI_CONNECTION_SERVICE_PEEK_MESSAGE_T      service_peek_msg;
+
+   // Routine to hold a message
+   VCHI_CONNECTION_SERVICE_HOLD_MESSAGE_T      service_hold_msg;
+
+   // Routine to initialise a received message iterator
+   VCHI_CONNECTION_SERVICE_LOOKAHEAD_MESSAGE_T service_look_ahead_msg;
+
+   // Routine to release a message
+   VCHI_CONNECTION_HELD_MSG_RELEASE_T          held_msg_release;
+
+   // Routine to get information on a held message
+   VCHI_CONNECTION_HELD_MSG_INFO_T             held_msg_info;
+
+   // Routine to check for next message on iterator
+   VCHI_CONNECTION_MSG_ITER_HAS_NEXT_T         msg_iter_has_next;
+
+   // Routine to get next message on iterator
+   VCHI_CONNECTION_MSG_ITER_NEXT_T             msg_iter_next;
+
+   // Routine to remove the last message returned by iterator
+   VCHI_CONNECTION_MSG_ITER_REMOVE_T           msg_iter_remove;
+
+   // Routine to hold the last message returned by iterator
+   VCHI_CONNECTION_MSG_ITER_HOLD_T             msg_iter_hold;
+
+   // Routine to transmit bulk data
+   VCHI_CONNECTION_BULK_QUEUE_TRANSMIT_T       bulk_queue_transmit;
+
+   // Routine to receive data
+   VCHI_CONNECTION_BULK_QUEUE_RECEIVE_T        bulk_queue_receive;
+
+   // Routine to report the available servers
+   VCHI_CONNECTION_SERVER_PRESENT              server_present;
+
+   // Routine to report the number of RX slots available
+   VCHI_CONNECTION_RX_SLOTS_AVAILABLE          connection_rx_slots_available;
+
+   // Routine to report the RX slot size
+   VCHI_CONNECTION_RX_SLOT_SIZE                connection_rx_slot_size;
+
+   // Callback to indicate that the other side has added a buffer to the rx bulk DMA FIFO
+   VCHI_CONNECTION_RX_BULK_BUFFER_ADDED        rx_bulk_buffer_added;
+
+   // Callback to inform a service that a Xon or Xoff message has been received
+   VCHI_CONNECTION_FLOW_CONTROL                flow_control;
+
+   // Callback to inform a service that a server available reply message has been received
+   VCHI_CONNECTION_SERVER_AVAILABLE_REPLY      server_available_reply;
+
+   // Callback to indicate that bulk auxiliary messages have arrived
+   VCHI_CONNECTION_BULK_AUX_RECEIVED           bulk_aux_received;
+
+   // Callback to indicate that a bulk auxiliary message has been transmitted
+   VCHI_CONNECTION_BULK_AUX_TRANSMITTED        bulk_aux_transmitted;
+
+   // Callback to provide information about the connection
+   VCHI_CONNECTION_INFO                        connection_info;
+
+   // Callback to notify that peer has requested disconnect
+   VCHI_CONNECTION_DISCONNECT                  disconnect;
+
+   // Callback to notify that peer has requested power change
+   VCHI_CONNECTION_POWER_CONTROL               power_control;
+
+   // allocate memory suitably aligned for this connection
+   VCHI_BUFFER_ALLOCATE                        buffer_allocate;
+
+   // free memory allocated by buffer_allocate
+   VCHI_BUFFER_FREE                            buffer_free;
+
+};
+
+struct vchi_connection_t {
+   const VCHI_CONNECTION_API_T *api;
+   VCHI_CONNECTION_STATE_T     *state;
+#ifdef VCHI_COARSE_LOCKING
+   struct semaphore             sem;
+#endif
+};
+
+
+#endif /* CONNECTION_H_ */
+
+/****************************** End of file **********************************/
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchi/message_drivers/message.h linux-rpi/drivers/misc/vc04_services/interface/vchi/message_drivers/message.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchi/message_drivers/message.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchi/message_drivers/message.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,204 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _VCHI_MESSAGE_H_
+#define _VCHI_MESSAGE_H_
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/semaphore.h>
+
+#include "interface/vchi/vchi_cfg_internal.h"
+#include "interface/vchi/vchi_common.h"
+
+
+typedef enum message_event_type {
+   MESSAGE_EVENT_NONE,
+   MESSAGE_EVENT_NOP,
+   MESSAGE_EVENT_MESSAGE,
+   MESSAGE_EVENT_SLOT_COMPLETE,
+   MESSAGE_EVENT_RX_BULK_PAUSED,
+   MESSAGE_EVENT_RX_BULK_COMPLETE,
+   MESSAGE_EVENT_TX_COMPLETE,
+   MESSAGE_EVENT_MSG_DISCARDED
+} MESSAGE_EVENT_TYPE_T;
+
+typedef enum vchi_msg_flags
+{
+   VCHI_MSG_FLAGS_NONE                  = 0x0,
+   VCHI_MSG_FLAGS_TERMINATE_DMA         = 0x1
+} VCHI_MSG_FLAGS_T;
+
+typedef enum message_tx_channel
+{
+   MESSAGE_TX_CHANNEL_MESSAGE           = 0,
+   MESSAGE_TX_CHANNEL_BULK              = 1 // drivers may provide multiple bulk channels, from 1 upwards
+} MESSAGE_TX_CHANNEL_T;
+
+// Macros used for cycling through bulk channels
+#define MESSAGE_TX_CHANNEL_BULK_PREV(c) (MESSAGE_TX_CHANNEL_BULK+((c)-MESSAGE_TX_CHANNEL_BULK+VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION-1)%VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION)
+#define MESSAGE_TX_CHANNEL_BULK_NEXT(c) (MESSAGE_TX_CHANNEL_BULK+((c)-MESSAGE_TX_CHANNEL_BULK+1)%VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION)
+
+typedef enum message_rx_channel
+{
+   MESSAGE_RX_CHANNEL_MESSAGE           = 0,
+   MESSAGE_RX_CHANNEL_BULK              = 1 // drivers may provide multiple bulk channels, from 1 upwards
+} MESSAGE_RX_CHANNEL_T;
+
+// Message receive slot information
+typedef struct rx_msg_slot_info {
+
+   struct rx_msg_slot_info *next;
+   //struct slot_info *prev;
+#if !defined VCHI_COARSE_LOCKING
+   struct semaphore   sem;
+#endif
+
+   uint8_t           *addr;               // base address of slot
+   uint32_t           len;                // length of slot in bytes
+
+   uint32_t           write_ptr;          // hardware causes this to advance
+   uint32_t           read_ptr;           // this module does the reading
+   int                active;             // is this slot in the hardware dma fifo?
+   uint32_t           msgs_parsed;        // count how many messages are in this slot
+   uint32_t           msgs_released;      // how many messages have been released
+   void              *state;              // connection state information
+   uint8_t            ref_count[VCHI_MAX_SERVICES_PER_CONNECTION];          // reference count for slots held by services
+} RX_MSG_SLOTINFO_T;
+
+// The message driver no longer needs to know about the fields of RX_BULK_SLOTINFO_T - sort this out.
+// In particular, it mustn't use addr and len - they're the client buffer, but the message
+// driver will be tasked with sending the aligned core section.
+typedef struct rx_bulk_slotinfo_t {
+   struct rx_bulk_slotinfo_t *next;
+
+   struct semaphore *blocking;
+
+   // needed by DMA
+   void        *addr;
+   uint32_t     len;
+
+   // needed for the callback
+   void        *service;
+   void        *handle;
+   VCHI_FLAGS_T flags;
+} RX_BULK_SLOTINFO_T;
+
+
+/* ----------------------------------------------------------------------
+ * each connection driver will have a pool of the following struct.
+ *
+ * the pool will be managed by vchi_qman_*
+ * this means there will be multiple queues (single linked lists)
+ * a given struct message_info will be on exactly one of these queues
+ * at any one time
+ * -------------------------------------------------------------------- */
+typedef struct rx_message_info {
+
+   struct message_info *next;
+   //struct message_info *prev;
+
+   uint8_t    *addr;
+   uint32_t   len;
+   RX_MSG_SLOTINFO_T *slot; // points to whichever slot contains this message
+   uint32_t   tx_timestamp;
+   uint32_t   rx_timestamp;
+
+} RX_MESSAGE_INFO_T;
+
+typedef struct {
+   MESSAGE_EVENT_TYPE_T type;
+
+   struct {
+      // for messages
+      void    *addr;           // address of message
+      uint16_t slot_delta;     // whether this message indicated slot delta
+      uint32_t len;            // length of message
+      RX_MSG_SLOTINFO_T *slot; // slot this message is in
+      int32_t  service;   // service id this message is destined for
+      uint32_t tx_timestamp;   // timestamp from the header
+      uint32_t rx_timestamp;   // timestamp when we parsed it
+   } message;
+
+   // FIXME: cleanup slot reporting...
+   RX_MSG_SLOTINFO_T *rx_msg;
+   RX_BULK_SLOTINFO_T *rx_bulk;
+   void *tx_handle;
+   MESSAGE_TX_CHANNEL_T tx_channel;
+
+} MESSAGE_EVENT_T;
+
+
+// callbacks
+typedef void VCHI_MESSAGE_DRIVER_EVENT_CALLBACK_T( void *state );
+
+typedef struct {
+   VCHI_MESSAGE_DRIVER_EVENT_CALLBACK_T *event_callback;
+} VCHI_MESSAGE_DRIVER_OPEN_T;
+
+
+// handle to this instance of message driver (as returned by ->open)
+typedef struct opaque_mhandle_t *VCHI_MDRIVER_HANDLE_T;
+
+struct opaque_vchi_message_driver_t {
+   VCHI_MDRIVER_HANDLE_T *(*open)( VCHI_MESSAGE_DRIVER_OPEN_T *params, void *state );
+   int32_t (*suspending)( VCHI_MDRIVER_HANDLE_T *handle );
+   int32_t (*resumed)( VCHI_MDRIVER_HANDLE_T *handle );
+   int32_t (*power_control)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T, int32_t enable );
+   int32_t (*add_msg_rx_slot)( VCHI_MDRIVER_HANDLE_T *handle, RX_MSG_SLOTINFO_T *slot );      // rx message
+   int32_t (*add_bulk_rx)( VCHI_MDRIVER_HANDLE_T *handle, void *data, uint32_t len, RX_BULK_SLOTINFO_T *slot );  // rx data (bulk)
+   int32_t (*send)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel, const void *data, uint32_t len, VCHI_MSG_FLAGS_T flags, void *send_handle );      // tx (message & bulk)
+   void    (*next_event)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_EVENT_T *event );     // get the next event from message_driver
+   int32_t (*enable)( VCHI_MDRIVER_HANDLE_T *handle );
+   int32_t (*form_message)( VCHI_MDRIVER_HANDLE_T *handle, int32_t service_id, VCHI_MSG_VECTOR_T *vector, uint32_t count, void
+                            *address, uint32_t length_avail, uint32_t max_total_length, int32_t pad_to_fill, int32_t allow_partial );
+
+   int32_t (*update_message)( VCHI_MDRIVER_HANDLE_T *handle, void *dest, int16_t *slot_count );
+   int32_t (*buffer_aligned)( VCHI_MDRIVER_HANDLE_T *handle, int tx, int uncached, const void *address, const uint32_t length );
+   void *  (*allocate_buffer)( VCHI_MDRIVER_HANDLE_T *handle, uint32_t *length );
+   void    (*free_buffer)( VCHI_MDRIVER_HANDLE_T *handle, void *address );
+   int     (*rx_slot_size)( VCHI_MDRIVER_HANDLE_T *handle, int msg_size );
+   int     (*tx_slot_size)( VCHI_MDRIVER_HANDLE_T *handle, int msg_size );
+
+   int32_t  (*tx_supports_terminate)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel );
+   uint32_t (*tx_bulk_chunk_size)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel );
+   int     (*tx_alignment)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel );
+   int     (*rx_alignment)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_RX_CHANNEL_T channel );
+   void    (*form_bulk_aux)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel, const void *data, uint32_t len, uint32_t chunk_size, const void **aux_data, int32_t *aux_len );
+   void    (*debug)( VCHI_MDRIVER_HANDLE_T *handle );
+};
+
+
+#endif // _VCHI_MESSAGE_H_
+
+/****************************** End of file ***********************************/
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi_cfg.h linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi_cfg.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi_cfg.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi_cfg.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,224 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHI_CFG_H_
+#define VCHI_CFG_H_
+
+/****************************************************************************************
+ * Defines in this first section are part of the VCHI API and may be examined by VCHI
+ * services.
+ ***************************************************************************************/
+
+/* Required alignment of base addresses for bulk transfer, if unaligned transfers are not enabled */
+/* Really determined by the message driver, and should be available from a run-time call. */
+#ifndef VCHI_BULK_ALIGN
+#   if __VCCOREVER__ >= 0x04000000
+#       define VCHI_BULK_ALIGN 32 // Allows for the need to do cache cleans
+#   else
+#       define VCHI_BULK_ALIGN 16
+#   endif
+#endif
+
+/* Required length multiple for bulk transfers, if unaligned transfers are not enabled */
+/* May be less than or greater than VCHI_BULK_ALIGN */
+/* Really determined by the message driver, and should be available from a run-time call. */
+#ifndef VCHI_BULK_GRANULARITY
+#   if __VCCOREVER__ >= 0x04000000
+#       define VCHI_BULK_GRANULARITY 32 // Allows for the need to do cache cleans
+#   else
+#       define VCHI_BULK_GRANULARITY 16
+#   endif
+#endif
+
+/* The largest possible message to be queued with vchi_msg_queue. */
+#ifndef VCHI_MAX_MSG_SIZE
+#   if defined VCHI_LOCAL_HOST_PORT
+#       define VCHI_MAX_MSG_SIZE     16384         // makes file transfers fast, but should they be using bulk?
+#   else
+#       define VCHI_MAX_MSG_SIZE      4096 // NOTE: THIS MUST BE LARGER THAN OR EQUAL TO THE SIZE OF THE KHRONOS MERGE BUFFER!!
+#   endif
+#endif
+
+/******************************************************************************************
+ * Defines below are system configuration options, and should not be used by VCHI services.
+ *****************************************************************************************/
+
+/* How many connections can we support? A localhost implementation uses 2 connections,
+ * 1 for host-app, 1 for VMCS, and these are hooked together by a loopback MPHI VCFW
+ * driver. */
+#ifndef VCHI_MAX_NUM_CONNECTIONS
+#   define VCHI_MAX_NUM_CONNECTIONS 3
+#endif
+
+/* How many services can we open per connection? Extending this doesn't cost processing time, just a small
+ * amount of static memory. */
+#ifndef VCHI_MAX_SERVICES_PER_CONNECTION
+#  define VCHI_MAX_SERVICES_PER_CONNECTION 36
+#endif
+
+/* Adjust if using a message driver that supports more logical TX channels */
+#ifndef VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION
+#   define VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION 9 // 1 MPHI + 8 CCP2 logical channels
+#endif
+
+/* Adjust if using a message driver that supports more logical RX channels */
+#ifndef VCHI_MAX_BULK_RX_CHANNELS_PER_CONNECTION
+#   define VCHI_MAX_BULK_RX_CHANNELS_PER_CONNECTION 1 // 1 MPHI
+#endif
+
+/* How many receive slots do we use. This times VCHI_MAX_MSG_SIZE gives the effective
+ * receive queue space, less message headers. */
+#ifndef VCHI_NUM_READ_SLOTS
+#  if defined(VCHI_LOCAL_HOST_PORT)
+#     define VCHI_NUM_READ_SLOTS 4
+#  else
+#     define VCHI_NUM_READ_SLOTS 48
+#  endif
+#endif
+
+/* Do we utilise overrun facility for receive message slots? Can aid peer transmit
+ * performance. Only define on VideoCore end, talking to host.
+ */
+//#define VCHI_MSG_RX_OVERRUN
+
+/* How many transmit slots do we use. Generally don't need many, as the hardware driver
+ * underneath VCHI will usually have its own buffering. */
+#ifndef VCHI_NUM_WRITE_SLOTS
+#  define VCHI_NUM_WRITE_SLOTS 4
+#endif
+
+/* If a service has held or queued received messages in VCHI_XOFF_THRESHOLD or more slots,
+ * then it's taking up too much buffer space, and the peer service will be told to stop
+ * transmitting with an XOFF message. For this to be effective, the VCHI_NUM_READ_SLOTS
+ * needs to be considerably bigger than VCHI_NUM_WRITE_SLOTS, or the transmit latency
+ * is too high. */
+#ifndef VCHI_XOFF_THRESHOLD
+#  define VCHI_XOFF_THRESHOLD (VCHI_NUM_READ_SLOTS / 2)
+#endif
+
+/* After we've sent an XOFF, the peer will be told to resume transmission once the local
+ * service has dequeued/released enough messages that it's now occupying
+ * VCHI_XON_THRESHOLD slots or fewer. */
+#ifndef VCHI_XON_THRESHOLD
+#  define VCHI_XON_THRESHOLD (VCHI_NUM_READ_SLOTS / 4)
+#endif
+
+/* A size below which a bulk transfer omits the handshake completely and always goes
+ * via the message channel, if bulk auxiliary is being sent on that service. (The user
+ * can guarantee this by enabling unaligned transmits).
+ * Not API. */
+#ifndef VCHI_MIN_BULK_SIZE
+#  define VCHI_MIN_BULK_SIZE    ( VCHI_MAX_MSG_SIZE / 2 < 4096 ? VCHI_MAX_MSG_SIZE / 2 : 4096 )
+#endif
+
+/* Maximum size of bulk transmission chunks, for each interface type. A trade-off between
+ * speed and latency; the smaller the chunk size the better change of messages and other
+ * bulk transmissions getting in when big bulk transfers are happening. Set to 0 to not
+ * break transmissions into chunks.
+ */
+#ifndef VCHI_MAX_BULK_CHUNK_SIZE_MPHI
+#  define VCHI_MAX_BULK_CHUNK_SIZE_MPHI (16 * 1024)
+#endif
+
+/* NB Chunked CCP2 transmissions violate the letter of the CCP2 spec by using "JPEG8" mode
+ * with multiple-line frames. Only use if the receiver can cope. */
+#ifndef VCHI_MAX_BULK_CHUNK_SIZE_CCP2
+#  define VCHI_MAX_BULK_CHUNK_SIZE_CCP2 0
+#endif
+
+/* How many TX messages can we have pending in our transmit slots. Once exhausted,
+ * vchi_msg_queue will be blocked. */
+#ifndef VCHI_TX_MSG_QUEUE_SIZE
+#  define VCHI_TX_MSG_QUEUE_SIZE           256
+#endif
+
+/* How many RX messages can we have parsed in the receive slots. Once exhausted, parsing
+ * will be suspended until older messages are dequeued/released. */
+#ifndef VCHI_RX_MSG_QUEUE_SIZE
+#  define VCHI_RX_MSG_QUEUE_SIZE           256
+#endif
+
+/* Really should be able to cope if we run out of received message descriptors, by
+ * suspending parsing as the comment above says, but we don't. This sweeps the issue
+ * under the carpet. */
+#if VCHI_RX_MSG_QUEUE_SIZE < (VCHI_MAX_MSG_SIZE/16 + 1) * VCHI_NUM_READ_SLOTS
+#  undef VCHI_RX_MSG_QUEUE_SIZE
+#  define VCHI_RX_MSG_QUEUE_SIZE (VCHI_MAX_MSG_SIZE/16 + 1) * VCHI_NUM_READ_SLOTS
+#endif
+
+/* How many bulk transmits can we have pending. Once exhausted, vchi_bulk_queue_transmit
+ * will be blocked. */
+#ifndef VCHI_TX_BULK_QUEUE_SIZE
+#  define VCHI_TX_BULK_QUEUE_SIZE           64
+#endif
+
+/* How many bulk receives can we have pending. Once exhausted, vchi_bulk_queue_receive
+ * will be blocked. */
+#ifndef VCHI_RX_BULK_QUEUE_SIZE
+#  define VCHI_RX_BULK_QUEUE_SIZE           64
+#endif
+
+/* A limit on how many outstanding bulk requests we expect the peer to give us. If
+ * the peer asks for more than this, VCHI will fail and assert. The number is determined
+ * by the peer's hardware - it's the number of outstanding requests that can be queued
+ * on all bulk channels. VC3's MPHI peripheral allows 16. */
+#ifndef VCHI_MAX_PEER_BULK_REQUESTS
+#  define VCHI_MAX_PEER_BULK_REQUESTS       32
+#endif
+
+/* Define VCHI_CCP2TX_MANUAL_POWER if the host tells us when to turn the CCP2
+ * transmitter on and off.
+ */
+/*#define VCHI_CCP2TX_MANUAL_POWER*/
+
+#ifndef VCHI_CCP2TX_MANUAL_POWER
+
+/* Timeout (in milliseconds) for putting the CCP2TX interface into IDLE state. Set
+ * negative for no IDLE.
+ */
+#  ifndef VCHI_CCP2TX_IDLE_TIMEOUT
+#    define VCHI_CCP2TX_IDLE_TIMEOUT        5
+#  endif
+
+/* Timeout (in milliseconds) for putting the CCP2TX interface into OFF state. Set
+ * negative for no OFF.
+ */
+#  ifndef VCHI_CCP2TX_OFF_TIMEOUT
+#    define VCHI_CCP2TX_OFF_TIMEOUT         1000
+#  endif
+
+#endif /* VCHI_CCP2TX_MANUAL_POWER */
+
+#endif /* VCHI_CFG_H_ */
+
+/****************************** End of file **********************************/
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi_cfg_internal.h linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi_cfg_internal.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi_cfg_internal.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi_cfg_internal.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,71 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHI_CFG_INTERNAL_H_
+#define VCHI_CFG_INTERNAL_H_
+
+/****************************************************************************************
+ * Control optimisation attempts.
+ ***************************************************************************************/
+
+// Don't use lots of short-term locks - use great long ones, reducing the overall locks-per-second
+#define VCHI_COARSE_LOCKING
+
+// Avoid lock then unlock on exit from blocking queue operations (msg tx, bulk rx/tx)
+// (only relevant if VCHI_COARSE_LOCKING)
+#define VCHI_ELIDE_BLOCK_EXIT_LOCK
+
+// Avoid lock on non-blocking peek
+// (only relevant if VCHI_COARSE_LOCKING)
+#define VCHI_AVOID_PEEK_LOCK
+
+// Use one slot-handler thread per connection, rather than 1 thread dealing with all connections in rotation.
+#define VCHI_MULTIPLE_HANDLER_THREADS
+
+// Put free descriptors onto the head of the free queue, rather than the tail, so that we don't thrash
+// our way through the pool of descriptors.
+#define VCHI_PUSH_FREE_DESCRIPTORS_ONTO_HEAD
+
+// Don't issue a MSG_AVAILABLE callback for every single message. Possibly only safe if VCHI_COARSE_LOCKING.
+#define VCHI_FEWER_MSG_AVAILABLE_CALLBACKS
+
+// Don't use message descriptors for TX messages that don't need them
+#define VCHI_MINIMISE_TX_MSG_DESCRIPTORS
+
+// Nano-locks for multiqueue
+//#define VCHI_MQUEUE_NANOLOCKS
+
+// Lock-free(er) dequeuing
+//#define VCHI_RX_NANOLOCKS
+
+#endif /*VCHI_CFG_INTERNAL_H_*/
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi_common.h linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi_common.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi_common.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi_common.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,175 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHI_COMMON_H_
+#define VCHI_COMMON_H_
+
+
+//flags used when sending messages (must be bitmapped)
+typedef enum
+{
+   VCHI_FLAGS_NONE                      = 0x0,
+   VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE   = 0x1,   // waits for message to be received, or sent (NB. not the same as being seen on other side)
+   VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE = 0x2,   // run a callback when message sent
+   VCHI_FLAGS_BLOCK_UNTIL_QUEUED        = 0x4,   // return once the transfer is in a queue ready to go
+   VCHI_FLAGS_ALLOW_PARTIAL             = 0x8,
+   VCHI_FLAGS_BLOCK_UNTIL_DATA_READ     = 0x10,
+   VCHI_FLAGS_CALLBACK_WHEN_DATA_READ   = 0x20,
+
+   VCHI_FLAGS_ALIGN_SLOT            = 0x000080,  // internal use only
+   VCHI_FLAGS_BULK_AUX_QUEUED       = 0x010000,  // internal use only
+   VCHI_FLAGS_BULK_AUX_COMPLETE     = 0x020000,  // internal use only
+   VCHI_FLAGS_BULK_DATA_QUEUED      = 0x040000,  // internal use only
+   VCHI_FLAGS_BULK_DATA_COMPLETE    = 0x080000,  // internal use only
+   VCHI_FLAGS_INTERNAL              = 0xFF0000
+} VCHI_FLAGS_T;
+
+// constants for vchi_crc_control()
+typedef enum {
+   VCHI_CRC_NOTHING = -1,
+   VCHI_CRC_PER_SERVICE = 0,
+   VCHI_CRC_EVERYTHING = 1,
+} VCHI_CRC_CONTROL_T;
+
+//callback reasons when an event occurs on a service
+typedef enum
+{
+   VCHI_CALLBACK_REASON_MIN,
+
+   //This indicates that there is data available
+   //handle is the msg id that was transmitted with the data
+   //    When a message is received and there was no FULL message available previously, send callback
+   //    Tasks get kicked by the callback, reset their event and try and read from the fifo until it fails
+   VCHI_CALLBACK_MSG_AVAILABLE,
+   VCHI_CALLBACK_MSG_SENT,
+   VCHI_CALLBACK_MSG_SPACE_AVAILABLE, // XXX not yet implemented
+
+   // This indicates that a transfer from the other side has completed
+   VCHI_CALLBACK_BULK_RECEIVED,
+   //This indicates that data queued up to be sent has now gone
+   //handle is the msg id that was used when sending the data
+   VCHI_CALLBACK_BULK_SENT,
+   VCHI_CALLBACK_BULK_RX_SPACE_AVAILABLE, // XXX not yet implemented
+   VCHI_CALLBACK_BULK_TX_SPACE_AVAILABLE, // XXX not yet implemented
+
+   VCHI_CALLBACK_SERVICE_CLOSED,
+
+   // this side has sent XOFF to peer due to lack of data consumption by service
+   // (suggests the service may need to take some recovery action if it has
+   // been deliberately holding off consuming data)
+   VCHI_CALLBACK_SENT_XOFF,
+   VCHI_CALLBACK_SENT_XON,
+
+   // indicates that a bulk transfer has finished reading the source buffer
+   VCHI_CALLBACK_BULK_DATA_READ,
+
+   // power notification events (currently host side only)
+   VCHI_CALLBACK_PEER_OFF,
+   VCHI_CALLBACK_PEER_SUSPENDED,
+   VCHI_CALLBACK_PEER_ON,
+   VCHI_CALLBACK_PEER_RESUMED,
+   VCHI_CALLBACK_FORCED_POWER_OFF,
+
+#ifdef USE_VCHIQ_ARM
+   // some extra notifications provided by vchiq_arm
+   VCHI_CALLBACK_SERVICE_OPENED,
+   VCHI_CALLBACK_BULK_RECEIVE_ABORTED,
+   VCHI_CALLBACK_BULK_TRANSMIT_ABORTED,
+#endif
+
+   VCHI_CALLBACK_REASON_MAX
+} VCHI_CALLBACK_REASON_T;
+
+// service control options
+typedef enum
+{
+   VCHI_SERVICE_OPTION_MIN,
+
+   VCHI_SERVICE_OPTION_TRACE,
+   VCHI_SERVICE_OPTION_SYNCHRONOUS,
+
+   VCHI_SERVICE_OPTION_MAX
+} VCHI_SERVICE_OPTION_T;
+
+
+//Callback used by all services / bulk transfers
+typedef void (*VCHI_CALLBACK_T)( void *callback_param, //my service local param
+                                 VCHI_CALLBACK_REASON_T reason,
+                                 void *handle ); //for transmitting msg's only
+
+
+
+/*
+ * Define vector struct for scatter-gather (vector) operations
+ * Vectors can be nested - if a vector element has negative length, then
+ * the data pointer is treated as pointing to another vector array, with
+ * '-vec_len' elements. Thus to append a header onto an existing vector,
+ * you can do this:
+ *
+ * void foo(const VCHI_MSG_VECTOR_T *v, int n)
+ * {
+ *    VCHI_MSG_VECTOR_T nv[2];
+ *    nv[0].vec_base = my_header;
+ *    nv[0].vec_len = sizeof my_header;
+ *    nv[1].vec_base = v;
+ *    nv[1].vec_len = -n;
+ *    ...
+ *
+ */
+typedef struct vchi_msg_vector {
+   const void *vec_base;
+   int32_t vec_len;
+} VCHI_MSG_VECTOR_T;
+
+// Opaque type for a connection API
+typedef struct opaque_vchi_connection_api_t VCHI_CONNECTION_API_T;
+
+// Opaque type for a message driver
+typedef struct opaque_vchi_message_driver_t VCHI_MESSAGE_DRIVER_T;
+
+
+// Iterator structure for reading ahead through received message queue. Allocated by client,
+// initialised by vchi_msg_look_ahead. Fields are for internal VCHI use only.
+// Iterates over messages in queue at the instant of the call to vchi_msg_lookahead -
+// will not proceed to messages received since. Behaviour is undefined if an iterator
+// is used again after messages for that service are removed/dequeued by any
+// means other than vchi_msg_iter_... calls on the iterator itself.
+typedef struct {
+   struct opaque_vchi_service_t *service;
+   void *last;
+   void *next;
+   void *remove;
+} VCHI_MSG_ITER_T;
+
+
+#endif // VCHI_COMMON_H_
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi.h linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,378 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHI_H_
+#define VCHI_H_
+
+#include "interface/vchi/vchi_cfg.h"
+#include "interface/vchi/vchi_common.h"
+#include "interface/vchi/connections/connection.h"
+#include "vchi_mh.h"
+
+
+/******************************************************************************
+ Global defs
+ *****************************************************************************/
+
+#define VCHI_BULK_ROUND_UP(x)     ((((unsigned long)(x))+VCHI_BULK_ALIGN-1) & ~(VCHI_BULK_ALIGN-1))
+#define VCHI_BULK_ROUND_DOWN(x)   (((unsigned long)(x)) & ~(VCHI_BULK_ALIGN-1))
+#define VCHI_BULK_ALIGN_NBYTES(x) (VCHI_BULK_ALIGNED(x) ? 0 : (VCHI_BULK_ALIGN - ((unsigned long)(x) & (VCHI_BULK_ALIGN-1))))
+
+#ifdef USE_VCHIQ_ARM
+#define VCHI_BULK_ALIGNED(x)      1
+#else
+#define VCHI_BULK_ALIGNED(x)      (((unsigned long)(x) & (VCHI_BULK_ALIGN-1)) == 0)
+#endif
+
+struct vchi_version {
+	uint32_t version;
+	uint32_t version_min;
+};
+#define VCHI_VERSION(v_) { v_, v_ }
+#define VCHI_VERSION_EX(v_, m_) { v_, m_ }
+
+typedef enum
+{
+   VCHI_VEC_POINTER,
+   VCHI_VEC_HANDLE,
+   VCHI_VEC_LIST
+} VCHI_MSG_VECTOR_TYPE_T;
+
+typedef struct vchi_msg_vector_ex {
+
+   VCHI_MSG_VECTOR_TYPE_T type;
+   union
+   {
+      // a memory handle
+      struct
+      {
+         VCHI_MEM_HANDLE_T handle;
+         uint32_t offset;
+         int32_t vec_len;
+      } handle;
+
+      // an ordinary data pointer
+      struct
+      {
+         const void *vec_base;
+         int32_t vec_len;
+      } ptr;
+
+      // a nested vector list
+      struct
+      {
+         struct vchi_msg_vector_ex *vec;
+         uint32_t vec_len;
+      } list;
+   } u;
+} VCHI_MSG_VECTOR_EX_T;
+
+
+// Construct an entry in a msg vector for a pointer (p) of length (l)
+#define VCHI_VEC_POINTER(p,l)  VCHI_VEC_POINTER, { { (VCHI_MEM_HANDLE_T)(p), (l) } }
+
+// Construct an entry in a msg vector for a message handle (h), starting at offset (o) of length (l)
+#define VCHI_VEC_HANDLE(h,o,l) VCHI_VEC_HANDLE,  { { (h), (o), (l) } }
+
+// Macros to manipulate 'FOURCC' values
+#define MAKE_FOURCC(x) ((int32_t)( (x[0] << 24) | (x[1] << 16) | (x[2] << 8) | x[3] ))
+#define FOURCC_TO_CHAR(x) (x >> 24) & 0xFF,(x >> 16) & 0xFF,(x >> 8) & 0xFF, x & 0xFF
+
+
+// Opaque service information
+struct opaque_vchi_service_t;
+
+// Descriptor for a held message. Allocated by client, initialised by vchi_msg_hold,
+// vchi_msg_iter_hold or vchi_msg_iter_hold_next. Fields are for internal VCHI use only.
+typedef struct
+{
+   struct opaque_vchi_service_t *service;
+   void *message;
+} VCHI_HELD_MSG_T;
+
+
+
+// structure used to provide the information needed to open a server or a client
+typedef struct {
+	struct vchi_version version;
+	int32_t service_id;
+	VCHI_CONNECTION_T *connection;
+	uint32_t rx_fifo_size;
+	uint32_t tx_fifo_size;
+	VCHI_CALLBACK_T callback;
+	void *callback_param;
+	/* client intends to receive bulk transfers of
+		odd lengths or into unaligned buffers */
+	int32_t want_unaligned_bulk_rx;
+	/* client intends to transmit bulk transfers of
+		odd lengths or out of unaligned buffers */
+	int32_t want_unaligned_bulk_tx;
+	/* client wants to check CRCs on (bulk) xfers.
+		Only needs to be set at 1 end - will do both directions. */
+	int32_t want_crc;
+} SERVICE_CREATION_T;
+
+// Opaque handle for a VCHI instance
+typedef struct opaque_vchi_instance_handle_t *VCHI_INSTANCE_T;
+
+// Opaque handle for a server or client
+typedef struct opaque_vchi_service_handle_t *VCHI_SERVICE_HANDLE_T;
+
+// Service registration & startup
+typedef void (*VCHI_SERVICE_INIT)(VCHI_INSTANCE_T initialise_instance, VCHI_CONNECTION_T **connections, uint32_t num_connections);
+
+typedef struct service_info_tag {
+   const char * const vll_filename; /* VLL to load to start this service. This is an empty string if VLL is "static" */
+   VCHI_SERVICE_INIT init;          /* Service initialisation function */
+   void *vll_handle;                /* VLL handle; NULL when unloaded or a "static VLL" in build */
+} SERVICE_INFO_T;
+
+/******************************************************************************
+ Global funcs - implementation is specific to which side you are on (local / remote)
+ *****************************************************************************/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern /*@observer@*/ VCHI_CONNECTION_T * vchi_create_connection( const VCHI_CONNECTION_API_T * function_table,
+                                                   const VCHI_MESSAGE_DRIVER_T * low_level);
+
+
+// Routine used to initialise the vchi on both local + remote connections
+extern int32_t vchi_initialise( VCHI_INSTANCE_T *instance_handle );
+
+extern int32_t vchi_exit( void );
+
+extern int32_t vchi_connect( VCHI_CONNECTION_T **connections,
+                             const uint32_t num_connections,
+                             VCHI_INSTANCE_T instance_handle );
+
+//When this is called, ensure that all services have no data pending.
+//Bulk transfers can remain 'queued'
+extern int32_t vchi_disconnect( VCHI_INSTANCE_T instance_handle );
+
+// Global control over bulk CRC checking
+extern int32_t vchi_crc_control( VCHI_CONNECTION_T *connection,
+                                 VCHI_CRC_CONTROL_T control );
+
+// helper functions
+extern void * vchi_allocate_buffer(VCHI_SERVICE_HANDLE_T handle, uint32_t *length);
+extern void vchi_free_buffer(VCHI_SERVICE_HANDLE_T handle, void *address);
+extern uint32_t vchi_current_time(VCHI_INSTANCE_T instance_handle);
+
+
+/******************************************************************************
+ Global service API
+ *****************************************************************************/
+// Routine to create a named service
+extern int32_t vchi_service_create( VCHI_INSTANCE_T instance_handle,
+                                    SERVICE_CREATION_T *setup,
+                                    VCHI_SERVICE_HANDLE_T *handle );
+
+// Routine to destory a service
+extern int32_t vchi_service_destroy( const VCHI_SERVICE_HANDLE_T handle );
+
+// Routine to open a named service
+extern int32_t vchi_service_open( VCHI_INSTANCE_T instance_handle,
+                                  SERVICE_CREATION_T *setup,
+                                  VCHI_SERVICE_HANDLE_T *handle);
+
+extern int32_t vchi_get_peer_version( const VCHI_SERVICE_HANDLE_T handle,
+                                      short *peer_version );
+
+// Routine to close a named service
+extern int32_t vchi_service_close( const VCHI_SERVICE_HANDLE_T handle );
+
+// Routine to increment ref count on a named service
+extern int32_t vchi_service_use( const VCHI_SERVICE_HANDLE_T handle );
+
+// Routine to decrement ref count on a named service
+extern int32_t vchi_service_release( const VCHI_SERVICE_HANDLE_T handle );
+
+// Routine to set a control option for a named service
+extern int32_t vchi_service_set_option( const VCHI_SERVICE_HANDLE_T handle,
+					VCHI_SERVICE_OPTION_T option,
+					int value);
+
+// Routine to send a message across a service
+extern int32_t vchi_msg_queue( VCHI_SERVICE_HANDLE_T handle,
+                               const void *data,
+                               uint32_t data_size,
+                               VCHI_FLAGS_T flags,
+                               void *msg_handle );
+
+// scatter-gather (vector) and send message
+int32_t vchi_msg_queuev_ex( VCHI_SERVICE_HANDLE_T handle,
+                            VCHI_MSG_VECTOR_EX_T *vector,
+                            uint32_t count,
+                            VCHI_FLAGS_T flags,
+                            void *msg_handle );
+
+// legacy scatter-gather (vector) and send message, only handles pointers
+int32_t vchi_msg_queuev( VCHI_SERVICE_HANDLE_T handle,
+                         VCHI_MSG_VECTOR_T *vector,
+                         uint32_t count,
+                         VCHI_FLAGS_T flags,
+                         void *msg_handle );
+
+// Routine to receive a msg from a service
+// Dequeue is equivalent to hold, copy into client buffer, release
+extern int32_t vchi_msg_dequeue( VCHI_SERVICE_HANDLE_T handle,
+                                 void *data,
+                                 uint32_t max_data_size_to_read,
+                                 uint32_t *actual_msg_size,
+                                 VCHI_FLAGS_T flags );
+
+// Routine to look at a message in place.
+// The message is not dequeued, so a subsequent call to peek or dequeue
+// will return the same message.
+extern int32_t vchi_msg_peek( VCHI_SERVICE_HANDLE_T handle,
+                              void **data,
+                              uint32_t *msg_size,
+                              VCHI_FLAGS_T flags );
+
+// Routine to remove a message after it has been read in place with peek
+// The first message on the queue is dequeued.
+extern int32_t vchi_msg_remove( VCHI_SERVICE_HANDLE_T handle );
+
+// Routine to look at a message in place.
+// The message is dequeued, so the caller is left holding it; the descriptor is
+// filled in and must be released when the user has finished with the message.
+extern int32_t vchi_msg_hold( VCHI_SERVICE_HANDLE_T handle,
+                              void **data,        // } may be NULL, as info can be
+                              uint32_t *msg_size, // } obtained from HELD_MSG_T
+                              VCHI_FLAGS_T flags,
+                              VCHI_HELD_MSG_T *message_descriptor );
+
+// Initialise an iterator to look through messages in place
+extern int32_t vchi_msg_look_ahead( VCHI_SERVICE_HANDLE_T handle,
+                                    VCHI_MSG_ITER_T *iter,
+                                    VCHI_FLAGS_T flags );
+
+/******************************************************************************
+ Global service support API - operations on held messages and message iterators
+ *****************************************************************************/
+
+// Routine to get the address of a held message
+extern void *vchi_held_msg_ptr( const VCHI_HELD_MSG_T *message );
+
+// Routine to get the size of a held message
+extern int32_t vchi_held_msg_size( const VCHI_HELD_MSG_T *message );
+
+// Routine to get the transmit timestamp as written into the header by the peer
+extern uint32_t vchi_held_msg_tx_timestamp( const VCHI_HELD_MSG_T *message );
+
+// Routine to get the reception timestamp, written as we parsed the header
+extern uint32_t vchi_held_msg_rx_timestamp( const VCHI_HELD_MSG_T *message );
+
+// Routine to release a held message after it has been processed
+extern int32_t vchi_held_msg_release( VCHI_HELD_MSG_T *message );
+
+// Indicates whether the iterator has a next message.
+extern int32_t vchi_msg_iter_has_next( const VCHI_MSG_ITER_T *iter );
+
+// Return the pointer and length for the next message and advance the iterator.
+extern int32_t vchi_msg_iter_next( VCHI_MSG_ITER_T *iter,
+                                   void **data,
+                                   uint32_t *msg_size );
+
+// Remove the last message returned by vchi_msg_iter_next.
+// Can only be called once after each call to vchi_msg_iter_next.
+extern int32_t vchi_msg_iter_remove( VCHI_MSG_ITER_T *iter );
+
+// Hold the last message returned by vchi_msg_iter_next.
+// Can only be called once after each call to vchi_msg_iter_next.
+extern int32_t vchi_msg_iter_hold( VCHI_MSG_ITER_T *iter,
+                                   VCHI_HELD_MSG_T *message );
+
+// Return information for the next message, and hold it, advancing the iterator.
+extern int32_t vchi_msg_iter_hold_next( VCHI_MSG_ITER_T *iter,
+                                        void **data,        // } may be NULL
+                                        uint32_t *msg_size, // }
+                                        VCHI_HELD_MSG_T *message );
+
+
+/******************************************************************************
+ Global bulk API
+ *****************************************************************************/
+
+// Routine to prepare interface for a transfer from the other side
+extern int32_t vchi_bulk_queue_receive( VCHI_SERVICE_HANDLE_T handle,
+                                        void *data_dst,
+                                        uint32_t data_size,
+                                        VCHI_FLAGS_T flags,
+                                        void *transfer_handle );
+
+
+// Prepare interface for a transfer from the other side into relocatable memory.
+int32_t vchi_bulk_queue_receive_reloc( const VCHI_SERVICE_HANDLE_T handle,
+                                       VCHI_MEM_HANDLE_T h_dst,
+                                       uint32_t offset,
+                                       uint32_t data_size,
+                                       const VCHI_FLAGS_T flags,
+                                       void * const bulk_handle );
+
+// Routine to queue up data ready for transfer to the other (once they have signalled they are ready)
+extern int32_t vchi_bulk_queue_transmit( VCHI_SERVICE_HANDLE_T handle,
+                                         const void *data_src,
+                                         uint32_t data_size,
+                                         VCHI_FLAGS_T flags,
+                                         void *transfer_handle );
+
+
+/******************************************************************************
+ Configuration plumbing
+ *****************************************************************************/
+
+// function prototypes for the different mid layers (the state info gives the different physical connections)
+extern const VCHI_CONNECTION_API_T *single_get_func_table( void );
+//extern const VCHI_CONNECTION_API_T *local_server_get_func_table( void );
+//extern const VCHI_CONNECTION_API_T *local_client_get_func_table( void );
+
+// declare all message drivers here
+const VCHI_MESSAGE_DRIVER_T *vchi_mphi_message_driver_func_table( void );
+
+#ifdef __cplusplus
+}
+#endif
+
+extern int32_t vchi_bulk_queue_transmit_reloc( VCHI_SERVICE_HANDLE_T handle,
+                                               VCHI_MEM_HANDLE_T h_src,
+                                               uint32_t offset,
+                                               uint32_t data_size,
+                                               VCHI_FLAGS_T flags,
+                                               void *transfer_handle );
+#endif /* VCHI_H_ */
+
+/****************************** End of file **********************************/
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi_mh.h linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi_mh.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchi/vchi_mh.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchi/vchi_mh.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHI_MH_H_
+#define VCHI_MH_H_
+
+#include <linux/types.h>
+
+typedef int32_t VCHI_MEM_HANDLE_T;
+#define VCHI_MEM_HANDLE_INVALID 0
+
+#endif
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,562 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/pagemap.h>
+#include <linux/dma-mapping.h>
+#include <linux/version.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <asm/pgtable.h>
+
+#include <mach/irqs.h>
+
+#include <mach/platform.h>
+#include <mach/vcio.h>
+
+#define TOTAL_SLOTS (VCHIQ_SLOT_ZERO_SLOTS + 2 * 32)
+
+#define VCHIQ_DOORBELL_IRQ IRQ_ARM_DOORBELL_0
+#define VCHIQ_ARM_ADDRESS(x) ((void *)__virt_to_bus((unsigned)x))
+
+#include "vchiq_arm.h"
+#include "vchiq_2835.h"
+#include "vchiq_connected.h"
+#include "vchiq_killable.h"
+
+#define MAX_FRAGMENTS (VCHIQ_NUM_CURRENT_BULKS * 2)
+
+typedef struct vchiq_2835_state_struct {
+   int inited;
+   VCHIQ_ARM_STATE_T arm_state;
+} VCHIQ_2835_ARM_STATE_T;
+
+static char *g_slot_mem;
+static int g_slot_mem_size;
+dma_addr_t g_slot_phys;
+static FRAGMENTS_T *g_fragments_base;
+static FRAGMENTS_T *g_free_fragments;
+struct semaphore g_free_fragments_sema;
+
+extern int vchiq_arm_log_level;
+
+static DEFINE_SEMAPHORE(g_free_fragments_mutex);
+
+static irqreturn_t
+vchiq_doorbell_irq(int irq, void *dev_id);
+
+static int
+create_pagelist(char __user *buf, size_t count, unsigned short type,
+                struct task_struct *task, PAGELIST_T ** ppagelist);
+
+static void
+free_pagelist(PAGELIST_T *pagelist, int actual);
+
+int __init
+vchiq_platform_init(VCHIQ_STATE_T *state)
+{
+	VCHIQ_SLOT_ZERO_T *vchiq_slot_zero;
+	int frag_mem_size;
+	int err;
+	int i;
+
+	/* Allocate space for the channels in coherent memory */
+	g_slot_mem_size = PAGE_ALIGN(TOTAL_SLOTS * VCHIQ_SLOT_SIZE);
+	frag_mem_size = PAGE_ALIGN(sizeof(FRAGMENTS_T) * MAX_FRAGMENTS);
+
+	g_slot_mem = dma_alloc_coherent(NULL, g_slot_mem_size + frag_mem_size,
+		&g_slot_phys, GFP_ATOMIC);
+
+	if (!g_slot_mem) {
+		vchiq_log_error(vchiq_arm_log_level,
+			"Unable to allocate channel memory");
+		err = -ENOMEM;
+		goto failed_alloc;
+	}
+
+	WARN_ON(((int)g_slot_mem & (PAGE_SIZE - 1)) != 0);
+
+	vchiq_slot_zero = vchiq_init_slots(g_slot_mem, g_slot_mem_size);
+	if (!vchiq_slot_zero) {
+		err = -EINVAL;
+		goto failed_init_slots;
+	}
+
+	vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX] =
+		(int)g_slot_phys + g_slot_mem_size;
+	vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX] =
+		MAX_FRAGMENTS;
+
+	g_fragments_base = (FRAGMENTS_T *)(g_slot_mem + g_slot_mem_size);
+	g_slot_mem_size += frag_mem_size;
+
+	g_free_fragments = g_fragments_base;
+	for (i = 0; i < (MAX_FRAGMENTS - 1); i++) {
+		*(FRAGMENTS_T **)&g_fragments_base[i] =
+			&g_fragments_base[i + 1];
+	}
+	*(FRAGMENTS_T **)&g_fragments_base[i] = NULL;
+	sema_init(&g_free_fragments_sema, MAX_FRAGMENTS);
+
+	if (vchiq_init_state(state, vchiq_slot_zero, 0/*slave*/) !=
+		VCHIQ_SUCCESS) {
+		err = -EINVAL;
+		goto failed_vchiq_init;
+	}
+
+	err = request_irq(VCHIQ_DOORBELL_IRQ, vchiq_doorbell_irq,
+		IRQF_IRQPOLL, "VCHIQ doorbell",
+		state);
+	if (err < 0) {
+		vchiq_log_error(vchiq_arm_log_level, "%s: failed to register "
+			"irq=%d err=%d", __func__,
+			VCHIQ_DOORBELL_IRQ, err);
+		goto failed_request_irq;
+	}
+
+	/* Send the base address of the slots to VideoCore */
+
+	dsb(); /* Ensure all writes have completed */
+
+	bcm_mailbox_write(MBOX_CHAN_VCHIQ, (unsigned int)g_slot_phys);
+
+	vchiq_log_info(vchiq_arm_log_level,
+		"vchiq_init - done (slots %x, phys %x)",
+		(unsigned int)vchiq_slot_zero, g_slot_phys);
+
+   vchiq_call_connected_callbacks();
+
+   return 0;
+
+failed_request_irq:
+failed_vchiq_init:
+failed_init_slots:
+   dma_free_coherent(NULL, g_slot_mem_size, g_slot_mem, g_slot_phys);
+
+failed_alloc:
+   return err;
+}
+
+void __exit
+vchiq_platform_exit(VCHIQ_STATE_T *state)
+{
+   free_irq(VCHIQ_DOORBELL_IRQ, state);
+   dma_free_coherent(NULL, g_slot_mem_size,
+                     g_slot_mem, g_slot_phys);
+}
+
+
+VCHIQ_STATUS_T
+vchiq_platform_init_state(VCHIQ_STATE_T *state)
+{
+   VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+   state->platform_state = kzalloc(sizeof(VCHIQ_2835_ARM_STATE_T), GFP_KERNEL);
+   ((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->inited = 1;
+   status = vchiq_arm_init_state(state, &((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->arm_state);
+   if(status != VCHIQ_SUCCESS)
+   {
+      ((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->inited = 0;
+   }
+   return status;
+}
+
+VCHIQ_ARM_STATE_T*
+vchiq_platform_get_arm_state(VCHIQ_STATE_T *state)
+{
+   if(!((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->inited)
+   {
+      BUG();
+   }
+   return &((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->arm_state;
+}
+
+void
+remote_event_signal(REMOTE_EVENT_T *event)
+{
+	wmb();
+
+	event->fired = 1;
+
+	dsb();         /* data barrier operation */
+
+	if (event->armed) {
+		/* trigger vc interrupt */
+
+		writel(0, __io_address(ARM_0_BELL2));
+	}
+}
+
+int
+vchiq_copy_from_user(void *dst, const void *src, int size)
+{
+	if ((uint32_t)src < TASK_SIZE) {
+		return copy_from_user(dst, src, size);
+	} else {
+		memcpy(dst, src, size);
+		return 0;
+	}
+}
+
+VCHIQ_STATUS_T
+vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, VCHI_MEM_HANDLE_T memhandle,
+	void *offset, int size, int dir)
+{
+	PAGELIST_T *pagelist;
+	int ret;
+
+	WARN_ON(memhandle != VCHI_MEM_HANDLE_INVALID);
+
+	ret = create_pagelist((char __user *)offset, size,
+			(dir == VCHIQ_BULK_RECEIVE)
+			? PAGELIST_READ
+			: PAGELIST_WRITE,
+			current,
+			&pagelist);
+	if (ret != 0)
+		return VCHIQ_ERROR;
+
+	bulk->handle = memhandle;
+	bulk->data = VCHIQ_ARM_ADDRESS(pagelist);
+
+	/* Store the pagelist address in remote_data, which isn't used by the
+	   slave. */
+	bulk->remote_data = pagelist;
+
+	return VCHIQ_SUCCESS;
+}
+
+void
+vchiq_complete_bulk(VCHIQ_BULK_T *bulk)
+{
+	if (bulk && bulk->remote_data && bulk->actual)
+		free_pagelist((PAGELIST_T *)bulk->remote_data, bulk->actual);
+}
+
+void
+vchiq_transfer_bulk(VCHIQ_BULK_T *bulk)
+{
+	/*
+	 * This should only be called on the master (VideoCore) side, but
+	 * provide an implementation to avoid the need for ifdefery.
+	 */
+	BUG();
+}
+
+void
+vchiq_dump_platform_state(void *dump_context)
+{
+	char buf[80];
+	int len;
+	len = snprintf(buf, sizeof(buf),
+		"  Platform: 2835 (VC master)");
+	vchiq_dump(dump_context, buf, len + 1);
+}
+
+VCHIQ_STATUS_T
+vchiq_platform_suspend(VCHIQ_STATE_T *state)
+{
+   return VCHIQ_ERROR;
+}
+
+VCHIQ_STATUS_T
+vchiq_platform_resume(VCHIQ_STATE_T *state)
+{
+   return VCHIQ_SUCCESS;
+}
+
+void
+vchiq_platform_paused(VCHIQ_STATE_T *state)
+{
+}
+
+void
+vchiq_platform_resumed(VCHIQ_STATE_T *state)
+{
+}
+
+int
+vchiq_platform_videocore_wanted(VCHIQ_STATE_T* state)
+{
+   return 1; // autosuspend not supported - videocore always wanted
+}
+
+int
+vchiq_platform_use_suspend_timer(void)
+{
+   return 0;
+}
+void
+vchiq_dump_platform_use_state(VCHIQ_STATE_T *state)
+{
+	vchiq_log_info((vchiq_arm_log_level>=VCHIQ_LOG_INFO),"Suspend timer not in use");
+}
+void
+vchiq_platform_handle_timeout(VCHIQ_STATE_T *state)
+{
+	(void)state;
+}
+/*
+ * Local functions
+ */
+
+static irqreturn_t
+vchiq_doorbell_irq(int irq, void *dev_id)
+{
+	VCHIQ_STATE_T *state = dev_id;
+	irqreturn_t ret = IRQ_NONE;
+	unsigned int status;
+
+	/* Read (and clear) the doorbell */
+	status = readl(__io_address(ARM_0_BELL0));
+
+	if (status & 0x4) {  /* Was the doorbell rung? */
+		remote_event_pollall(state);
+		ret = IRQ_HANDLED;
+	}
+
+	return ret;
+}
+
+/* There is a potential problem with partial cache lines (pages?)
+** at the ends of the block when reading. If the CPU accessed anything in
+** the same line (page?) then it may have pulled old data into the cache,
+** obscuring the new data underneath. We can solve this by transferring the
+** partial cache lines separately, and allowing the ARM to copy into the
+** cached area.
+
+** N.B. This implementation plays slightly fast and loose with the Linux
+** driver programming rules, e.g. its use of __virt_to_bus instead of
+** dma_map_single, but it isn't a multi-platform driver and it benefits
+** from increased speed as a result.
+*/
+
+static int
+create_pagelist(char __user *buf, size_t count, unsigned short type,
+	struct task_struct *task, PAGELIST_T ** ppagelist)
+{
+	PAGELIST_T *pagelist;
+	struct page **pages;
+	struct page *page;
+	unsigned long *addrs;
+	unsigned int num_pages, offset, i;
+	char *addr, *base_addr, *next_addr;
+	int run, addridx, actual_pages;
+        unsigned long *need_release;
+
+	offset = (unsigned int)buf & (PAGE_SIZE - 1);
+	num_pages = (count + offset + PAGE_SIZE - 1) / PAGE_SIZE;
+
+	*ppagelist = NULL;
+
+	/* Allocate enough storage to hold the page pointers and the page
+	** list
+	*/
+	pagelist = kmalloc(sizeof(PAGELIST_T) +
+                           (num_pages * sizeof(unsigned long)) +
+                           sizeof(unsigned long) +
+                           (num_pages * sizeof(pages[0])),
+                           GFP_KERNEL);
+
+	vchiq_log_trace(vchiq_arm_log_level,
+		"create_pagelist - %x", (unsigned int)pagelist);
+	if (!pagelist)
+		return -ENOMEM;
+
+	addrs = pagelist->addrs;
+        need_release = (unsigned long *)(addrs + num_pages);
+	pages = (struct page **)(addrs + num_pages + 1);
+
+	if (is_vmalloc_addr(buf)) {
+		for (actual_pages = 0; actual_pages < num_pages; actual_pages++) {
+			pages[actual_pages] = vmalloc_to_page(buf + (actual_pages * PAGE_SIZE));
+		}
+                *need_release = 0; /* do not try and release vmalloc pages */
+	} else {
+		down_read(&task->mm->mmap_sem);
+		actual_pages = get_user_pages(task, task->mm,
+				          (unsigned long)buf & ~(PAGE_SIZE - 1),
+					  num_pages,
+					  (type == PAGELIST_READ) /*Write */ ,
+					  0 /*Force */ ,
+					  pages,
+					  NULL /*vmas */);
+		up_read(&task->mm->mmap_sem);
+
+		if (actual_pages != num_pages) {
+			vchiq_log_info(vchiq_arm_log_level,
+				       "create_pagelist - only %d/%d pages locked",
+				       actual_pages,
+				       num_pages);
+
+			/* This is probably due to the process being killed */
+			while (actual_pages > 0)
+			{
+				actual_pages--;
+				page_cache_release(pages[actual_pages]);
+			}
+			kfree(pagelist);
+			if (actual_pages == 0)
+				actual_pages = -ENOMEM;
+			return actual_pages;
+		}
+                *need_release = 1; /* release user pages */
+	}
+
+	pagelist->length = count;
+	pagelist->type = type;
+	pagelist->offset = offset;
+
+	/* Group the pages into runs of contiguous pages */
+
+	base_addr = VCHIQ_ARM_ADDRESS(page_address(pages[0]));
+	next_addr = base_addr + PAGE_SIZE;
+	addridx = 0;
+	run = 0;
+
+	for (i = 1; i < num_pages; i++) {
+		addr = VCHIQ_ARM_ADDRESS(page_address(pages[i]));
+		if ((addr == next_addr) && (run < (PAGE_SIZE - 1))) {
+			next_addr += PAGE_SIZE;
+			run++;
+		} else {
+			addrs[addridx] = (unsigned long)base_addr + run;
+			addridx++;
+			base_addr = addr;
+			next_addr = addr + PAGE_SIZE;
+			run = 0;
+		}
+	}
+
+	addrs[addridx] = (unsigned long)base_addr + run;
+	addridx++;
+
+	/* Partial cache lines (fragments) require special measures */
+	if ((type == PAGELIST_READ) &&
+		((pagelist->offset & (CACHE_LINE_SIZE - 1)) ||
+		((pagelist->offset + pagelist->length) &
+		(CACHE_LINE_SIZE - 1)))) {
+		FRAGMENTS_T *fragments;
+
+		if (down_interruptible(&g_free_fragments_sema) != 0) {
+			kfree(pagelist);
+			return -EINTR;
+		}
+
+		WARN_ON(g_free_fragments == NULL);
+
+		down(&g_free_fragments_mutex);
+		fragments = (FRAGMENTS_T *) g_free_fragments;
+		WARN_ON(fragments == NULL);
+		g_free_fragments = *(FRAGMENTS_T **) g_free_fragments;
+		up(&g_free_fragments_mutex);
+		pagelist->type =
+			 PAGELIST_READ_WITH_FRAGMENTS + (fragments -
+							 g_fragments_base);
+	}
+
+	for (page = virt_to_page(pagelist);
+		page <= virt_to_page(addrs + num_pages - 1); page++) {
+		flush_dcache_page(page);
+	}
+
+	*ppagelist = pagelist;
+
+	return 0;
+}
+
+static void
+free_pagelist(PAGELIST_T *pagelist, int actual)
+{
+        unsigned long *need_release;
+	struct page **pages;
+	unsigned int num_pages, i;
+
+	vchiq_log_trace(vchiq_arm_log_level,
+		"free_pagelist - %x, %d", (unsigned int)pagelist, actual);
+
+	num_pages =
+		(pagelist->length + pagelist->offset + PAGE_SIZE - 1) /
+		PAGE_SIZE;
+
+        need_release = (unsigned long *)(pagelist->addrs + num_pages);
+	pages = (struct page **)(pagelist->addrs + num_pages + 1);
+
+	/* Deal with any partial cache lines (fragments) */
+	if (pagelist->type >= PAGELIST_READ_WITH_FRAGMENTS) {
+		FRAGMENTS_T *fragments = g_fragments_base +
+			(pagelist->type - PAGELIST_READ_WITH_FRAGMENTS);
+		int head_bytes, tail_bytes;
+		head_bytes = (CACHE_LINE_SIZE - pagelist->offset) &
+			(CACHE_LINE_SIZE - 1);
+		tail_bytes = (pagelist->offset + actual) &
+			(CACHE_LINE_SIZE - 1);
+
+		if ((actual >= 0) && (head_bytes != 0)) {
+			if (head_bytes > actual)
+				head_bytes = actual;
+
+			memcpy((char *)page_address(pages[0]) +
+				pagelist->offset,
+				fragments->headbuf,
+				head_bytes);
+		}
+		if ((actual >= 0) && (head_bytes < actual) &&
+			(tail_bytes != 0)) {
+			memcpy((char *)page_address(pages[num_pages - 1]) +
+				((pagelist->offset + actual) &
+				(PAGE_SIZE - 1) & ~(CACHE_LINE_SIZE - 1)),
+				fragments->tailbuf, tail_bytes);
+		}
+
+		down(&g_free_fragments_mutex);
+		*(FRAGMENTS_T **) fragments = g_free_fragments;
+		g_free_fragments = fragments;
+		up(&g_free_fragments_mutex);
+		up(&g_free_fragments_sema);
+	}
+
+        if (*need_release) {
+		for (i = 0; i < num_pages; i++) {
+			if (pagelist->type != PAGELIST_WRITE)
+				set_page_dirty(pages[i]);
+
+			page_cache_release(pages[i]);
+		}
+        }
+
+	kfree(pagelist);
+}
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_2835_H
+#define VCHIQ_2835_H
+
+#include "vchiq_pagelist.h"
+
+#define VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX 0
+#define VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX  1
+
+#endif /* VCHIQ_2835_H */
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,2884 @@
+/**
+ * Copyright (c) 2014 Raspberry Pi (Trading) Ltd. All rights reserved.
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/cdev.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+#include <linux/pagemap.h>
+#include <linux/bug.h>
+#include <linux/semaphore.h>
+#include <linux/list.h>
+
+#include "vchiq_core.h"
+#include "vchiq_ioctl.h"
+#include "vchiq_arm.h"
+#include "vchiq_debugfs.h"
+#include "vchiq_killable.h"
+
+#define DEVICE_NAME "vchiq"
+
+/* Override the default prefix, which would be vchiq_arm (from the filename) */
+#undef MODULE_PARAM_PREFIX
+#define MODULE_PARAM_PREFIX DEVICE_NAME "."
+
+#define VCHIQ_MINOR 0
+
+/* Some per-instance constants */
+#define MAX_COMPLETIONS 16
+#define MAX_SERVICES 64
+#define MAX_ELEMENTS 8
+#define MSG_QUEUE_SIZE 64
+
+#define KEEPALIVE_VER 1
+#define KEEPALIVE_VER_MIN KEEPALIVE_VER
+
+/* Run time control of log level, based on KERN_XXX level. */
+int vchiq_arm_log_level = VCHIQ_LOG_DEFAULT;
+int vchiq_susp_log_level = VCHIQ_LOG_ERROR;
+
+#define SUSPEND_TIMER_TIMEOUT_MS 100
+#define SUSPEND_RETRY_TIMER_TIMEOUT_MS 1000
+
+#define VC_SUSPEND_NUM_OFFSET 3 /* number of values before idle which are -ve */
+static const char *const suspend_state_names[] = {
+	"VC_SUSPEND_FORCE_CANCELED",
+	"VC_SUSPEND_REJECTED",
+	"VC_SUSPEND_FAILED",
+	"VC_SUSPEND_IDLE",
+	"VC_SUSPEND_REQUESTED",
+	"VC_SUSPEND_IN_PROGRESS",
+	"VC_SUSPEND_SUSPENDED"
+};
+#define VC_RESUME_NUM_OFFSET 1 /* number of values before idle which are -ve */
+static const char *const resume_state_names[] = {
+	"VC_RESUME_FAILED",
+	"VC_RESUME_IDLE",
+	"VC_RESUME_REQUESTED",
+	"VC_RESUME_IN_PROGRESS",
+	"VC_RESUME_RESUMED"
+};
+/* The number of times we allow force suspend to timeout before actually
+** _forcing_ suspend.  This is to cater for SW which fails to release vchiq
+** correctly - we don't want to prevent ARM suspend indefinitely in this case.
+*/
+#define FORCE_SUSPEND_FAIL_MAX 8
+
+/* The time in ms allowed for videocore to go idle when force suspend has been
+ * requested */
+#define FORCE_SUSPEND_TIMEOUT_MS 200
+
+
+static void suspend_timer_callback(unsigned long context);
+
+
+typedef struct user_service_struct {
+	VCHIQ_SERVICE_T *service;
+	void *userdata;
+	VCHIQ_INSTANCE_T instance;
+	char is_vchi;
+	char dequeue_pending;
+	char close_pending;
+	int message_available_pos;
+	int msg_insert;
+	int msg_remove;
+	struct semaphore insert_event;
+	struct semaphore remove_event;
+	struct semaphore close_event;
+	VCHIQ_HEADER_T * msg_queue[MSG_QUEUE_SIZE];
+} USER_SERVICE_T;
+
+struct bulk_waiter_node {
+	struct bulk_waiter bulk_waiter;
+	int pid;
+	struct list_head list;
+};
+
+struct vchiq_instance_struct {
+	VCHIQ_STATE_T *state;
+	VCHIQ_COMPLETION_DATA_T completions[MAX_COMPLETIONS];
+	int completion_insert;
+	int completion_remove;
+	struct semaphore insert_event;
+	struct semaphore remove_event;
+	struct mutex completion_mutex;
+
+	int connected;
+	int closing;
+	int pid;
+	int mark;
+	int use_close_delivered;
+	int trace;
+
+	struct list_head bulk_waiter_list;
+	struct mutex bulk_waiter_list_mutex;
+
+	VCHIQ_DEBUGFS_NODE_T debugfs_node;
+};
+
+typedef struct dump_context_struct {
+	char __user *buf;
+	size_t actual;
+	size_t space;
+	loff_t offset;
+} DUMP_CONTEXT_T;
+
+static struct cdev    vchiq_cdev;
+static dev_t          vchiq_devid;
+static VCHIQ_STATE_T g_state;
+static struct class  *vchiq_class;
+static struct device *vchiq_dev;
+static DEFINE_SPINLOCK(msg_queue_spinlock);
+
+static const char *const ioctl_names[] = {
+	"CONNECT",
+	"SHUTDOWN",
+	"CREATE_SERVICE",
+	"REMOVE_SERVICE",
+	"QUEUE_MESSAGE",
+	"QUEUE_BULK_TRANSMIT",
+	"QUEUE_BULK_RECEIVE",
+	"AWAIT_COMPLETION",
+	"DEQUEUE_MESSAGE",
+	"GET_CLIENT_ID",
+	"GET_CONFIG",
+	"CLOSE_SERVICE",
+	"USE_SERVICE",
+	"RELEASE_SERVICE",
+	"SET_SERVICE_OPTION",
+	"DUMP_PHYS_MEM",
+	"LIB_VERSION",
+	"CLOSE_DELIVERED"
+};
+
+vchiq_static_assert((sizeof(ioctl_names)/sizeof(ioctl_names[0])) ==
+	(VCHIQ_IOC_MAX + 1));
+
+static void
+dump_phys_mem(void *virt_addr, uint32_t num_bytes);
+
+/****************************************************************************
+*
+*   add_completion
+*
+***************************************************************************/
+
+static VCHIQ_STATUS_T
+add_completion(VCHIQ_INSTANCE_T instance, VCHIQ_REASON_T reason,
+	VCHIQ_HEADER_T *header, USER_SERVICE_T *user_service,
+	void *bulk_userdata)
+{
+	VCHIQ_COMPLETION_DATA_T *completion;
+	DEBUG_INITIALISE(g_state.local)
+
+	while (instance->completion_insert ==
+		(instance->completion_remove + MAX_COMPLETIONS)) {
+		/* Out of space - wait for the client */
+		DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+		vchiq_log_trace(vchiq_arm_log_level,
+			"add_completion - completion queue full");
+		DEBUG_COUNT(COMPLETION_QUEUE_FULL_COUNT);
+		if (down_interruptible(&instance->remove_event) != 0) {
+			vchiq_log_info(vchiq_arm_log_level,
+				"service_callback interrupted");
+			return VCHIQ_RETRY;
+		} else if (instance->closing) {
+			vchiq_log_info(vchiq_arm_log_level,
+				"service_callback closing");
+			return VCHIQ_ERROR;
+		}
+		DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+	}
+
+	completion =
+		 &instance->completions[instance->completion_insert &
+		 (MAX_COMPLETIONS - 1)];
+
+	completion->header = header;
+	completion->reason = reason;
+	/* N.B. service_userdata is updated while processing AWAIT_COMPLETION */
+	completion->service_userdata = user_service->service;
+	completion->bulk_userdata = bulk_userdata;
+
+	if (reason == VCHIQ_SERVICE_CLOSED) {
+		/* Take an extra reference, to be held until
+		   this CLOSED notification is delivered. */
+		lock_service(user_service->service);
+		if (instance->use_close_delivered)
+			user_service->close_pending = 1;
+	}
+
+	/* A write barrier is needed here to ensure that the entire completion
+		record is written out before the insert point. */
+	wmb();
+
+	if (reason == VCHIQ_MESSAGE_AVAILABLE)
+		user_service->message_available_pos =
+			instance->completion_insert;
+	instance->completion_insert++;
+
+	up(&instance->insert_event);
+
+	return VCHIQ_SUCCESS;
+}
+
+/****************************************************************************
+*
+*   service_callback
+*
+***************************************************************************/
+
+static VCHIQ_STATUS_T
+service_callback(VCHIQ_REASON_T reason, VCHIQ_HEADER_T *header,
+	VCHIQ_SERVICE_HANDLE_T handle, void *bulk_userdata)
+{
+	/* How do we ensure the callback goes to the right client?
+	** The service_user data points to a USER_SERVICE_T record containing
+	** the original callback and the user state structure, which contains a
+	** circular buffer for completion records.
+	*/
+	USER_SERVICE_T *user_service;
+	VCHIQ_SERVICE_T *service;
+	VCHIQ_INSTANCE_T instance;
+	DEBUG_INITIALISE(g_state.local)
+
+	DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+
+	service = handle_to_service(handle);
+	BUG_ON(!service);
+	user_service = (USER_SERVICE_T *)service->base.userdata;
+	instance = user_service->instance;
+
+	if (!instance || instance->closing)
+		return VCHIQ_SUCCESS;
+
+	vchiq_log_trace(vchiq_arm_log_level,
+		"service_callback - service %lx(%d,%p), reason %d, header %lx, "
+		"instance %lx, bulk_userdata %lx",
+		(unsigned long)user_service,
+		service->localport, user_service->userdata,
+		reason, (unsigned long)header,
+		(unsigned long)instance, (unsigned long)bulk_userdata);
+
+	if (header && user_service->is_vchi) {
+		spin_lock(&msg_queue_spinlock);
+		while (user_service->msg_insert ==
+			(user_service->msg_remove + MSG_QUEUE_SIZE)) {
+			spin_unlock(&msg_queue_spinlock);
+			DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+			DEBUG_COUNT(MSG_QUEUE_FULL_COUNT);
+			vchiq_log_trace(vchiq_arm_log_level,
+				"service_callback - msg queue full");
+			/* If there is no MESSAGE_AVAILABLE in the completion
+			** queue, add one
+			*/
+			if ((user_service->message_available_pos -
+				instance->completion_remove) < 0) {
+				VCHIQ_STATUS_T status;
+				vchiq_log_info(vchiq_arm_log_level,
+					"Inserting extra MESSAGE_AVAILABLE");
+				DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+				status = add_completion(instance, reason,
+					NULL, user_service, bulk_userdata);
+				if (status != VCHIQ_SUCCESS) {
+					DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+					return status;
+				}
+			}
+
+			DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+			if (down_interruptible(&user_service->remove_event)
+				!= 0) {
+				vchiq_log_info(vchiq_arm_log_level,
+					"service_callback interrupted");
+				DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+				return VCHIQ_RETRY;
+			} else if (instance->closing) {
+				vchiq_log_info(vchiq_arm_log_level,
+					"service_callback closing");
+				DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+				return VCHIQ_ERROR;
+			}
+			DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+			spin_lock(&msg_queue_spinlock);
+		}
+
+		user_service->msg_queue[user_service->msg_insert &
+			(MSG_QUEUE_SIZE - 1)] = header;
+		user_service->msg_insert++;
+		spin_unlock(&msg_queue_spinlock);
+
+		up(&user_service->insert_event);
+
+		/* If there is a thread waiting in DEQUEUE_MESSAGE, or if
+		** there is a MESSAGE_AVAILABLE in the completion queue then
+		** bypass the completion queue.
+		*/
+		if (((user_service->message_available_pos -
+			instance->completion_remove) >= 0) ||
+			user_service->dequeue_pending) {
+			DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+			user_service->dequeue_pending = 0;
+			return VCHIQ_SUCCESS;
+		}
+
+		header = NULL;
+	}
+	DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+
+	return add_completion(instance, reason, header, user_service,
+		bulk_userdata);
+}
+
+/****************************************************************************
+*
+*   user_service_free
+*
+***************************************************************************/
+static void
+user_service_free(void *userdata)
+{
+	kfree(userdata);
+}
+
+/****************************************************************************
+*
+*   close_delivered
+*
+***************************************************************************/
+static void close_delivered(USER_SERVICE_T *user_service)
+{
+	vchiq_log_info(vchiq_arm_log_level,
+		"close_delivered(handle=%x)",
+		user_service->service->handle);
+
+	if (user_service->close_pending) {
+		/* Allow the underlying service to be culled */
+		unlock_service(user_service->service);
+
+		/* Wake the user-thread blocked in close_ or remove_service */
+		up(&user_service->close_event);
+
+		user_service->close_pending = 0;
+	}
+}
+
+/****************************************************************************
+*
+*   vchiq_ioctl
+*
+***************************************************************************/
+static long
+vchiq_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	VCHIQ_INSTANCE_T instance = file->private_data;
+	VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+	VCHIQ_SERVICE_T *service = NULL;
+	long ret = 0;
+	int i, rc;
+	DEBUG_INITIALISE(g_state.local)
+
+	vchiq_log_trace(vchiq_arm_log_level,
+		 "vchiq_ioctl - instance %x, cmd %s, arg %lx",
+		(unsigned int)instance,
+		((_IOC_TYPE(cmd) == VCHIQ_IOC_MAGIC) &&
+		(_IOC_NR(cmd) <= VCHIQ_IOC_MAX)) ?
+		ioctl_names[_IOC_NR(cmd)] : "<invalid>", arg);
+
+	switch (cmd) {
+	case VCHIQ_IOC_SHUTDOWN:
+		if (!instance->connected)
+			break;
+
+		/* Remove all services */
+		i = 0;
+		while ((service = next_service_by_instance(instance->state,
+			instance, &i)) != NULL) {
+			status = vchiq_remove_service(service->handle);
+			unlock_service(service);
+			if (status != VCHIQ_SUCCESS)
+				break;
+		}
+		service = NULL;
+
+		if (status == VCHIQ_SUCCESS) {
+			/* Wake the completion thread and ask it to exit */
+			instance->closing = 1;
+			up(&instance->insert_event);
+		}
+
+		break;
+
+	case VCHIQ_IOC_CONNECT:
+		if (instance->connected) {
+			ret = -EINVAL;
+			break;
+		}
+		rc = mutex_lock_interruptible(&instance->state->mutex);
+		if (rc != 0) {
+			vchiq_log_error(vchiq_arm_log_level,
+				"vchiq: connect: could not lock mutex for "
+				"state %d: %d",
+				instance->state->id, rc);
+			ret = -EINTR;
+			break;
+		}
+		status = vchiq_connect_internal(instance->state, instance);
+		mutex_unlock(&instance->state->mutex);
+
+		if (status == VCHIQ_SUCCESS)
+			instance->connected = 1;
+		else
+			vchiq_log_error(vchiq_arm_log_level,
+				"vchiq: could not connect: %d", status);
+		break;
+
+	case VCHIQ_IOC_CREATE_SERVICE: {
+		VCHIQ_CREATE_SERVICE_T args;
+		USER_SERVICE_T *user_service = NULL;
+		void *userdata;
+		int srvstate;
+
+		if (copy_from_user
+			 (&args, (const void __user *)arg,
+			  sizeof(args)) != 0) {
+			ret = -EFAULT;
+			break;
+		}
+
+		user_service = kmalloc(sizeof(USER_SERVICE_T), GFP_KERNEL);
+		if (!user_service) {
+			ret = -ENOMEM;
+			break;
+		}
+
+		if (args.is_open) {
+			if (!instance->connected) {
+				ret = -ENOTCONN;
+				kfree(user_service);
+				break;
+			}
+			srvstate = VCHIQ_SRVSTATE_OPENING;
+		} else {
+			srvstate =
+				 instance->connected ?
+				 VCHIQ_SRVSTATE_LISTENING :
+				 VCHIQ_SRVSTATE_HIDDEN;
+		}
+
+		userdata = args.params.userdata;
+		args.params.callback = service_callback;
+		args.params.userdata = user_service;
+		service = vchiq_add_service_internal(
+				instance->state,
+				&args.params, srvstate,
+				instance, user_service_free);
+
+		if (service != NULL) {
+			user_service->service = service;
+			user_service->userdata = userdata;
+			user_service->instance = instance;
+			user_service->is_vchi = (args.is_vchi != 0);
+			user_service->dequeue_pending = 0;
+			user_service->close_pending = 0;
+			user_service->message_available_pos =
+				instance->completion_remove - 1;
+			user_service->msg_insert = 0;
+			user_service->msg_remove = 0;
+			sema_init(&user_service->insert_event, 0);
+			sema_init(&user_service->remove_event, 0);
+			sema_init(&user_service->close_event, 0);
+
+			if (args.is_open) {
+				status = vchiq_open_service_internal
+					(service, instance->pid);
+				if (status != VCHIQ_SUCCESS) {
+					vchiq_remove_service(service->handle);
+					service = NULL;
+					ret = (status == VCHIQ_RETRY) ?
+						-EINTR : -EIO;
+					break;
+				}
+			}
+
+			if (copy_to_user((void __user *)
+				&(((VCHIQ_CREATE_SERVICE_T __user *)
+					arg)->handle),
+				(const void *)&service->handle,
+				sizeof(service->handle)) != 0) {
+				ret = -EFAULT;
+				vchiq_remove_service(service->handle);
+			}
+
+			service = NULL;
+		} else {
+			ret = -EEXIST;
+			kfree(user_service);
+		}
+	} break;
+
+	case VCHIQ_IOC_CLOSE_SERVICE: {
+		VCHIQ_SERVICE_HANDLE_T handle = (VCHIQ_SERVICE_HANDLE_T)arg;
+
+		service = find_service_for_instance(instance, handle);
+		if (service != NULL) {
+			USER_SERVICE_T *user_service =
+				(USER_SERVICE_T *)service->base.userdata;
+			/* close_pending is false on first entry, and when the
+                           wait in vchiq_close_service has been interrupted. */
+			if (!user_service->close_pending) {
+				status = vchiq_close_service(service->handle);
+				if (status != VCHIQ_SUCCESS)
+					break;
+			}
+
+			/* close_pending is true once the underlying service
+			   has been closed until the client library calls the
+			   CLOSE_DELIVERED ioctl, signalling close_event. */
+			if (user_service->close_pending &&
+				down_interruptible(&user_service->close_event))
+				status = VCHIQ_RETRY;
+		}
+		else
+			ret = -EINVAL;
+	} break;
+
+	case VCHIQ_IOC_REMOVE_SERVICE: {
+		VCHIQ_SERVICE_HANDLE_T handle = (VCHIQ_SERVICE_HANDLE_T)arg;
+
+		service = find_service_for_instance(instance, handle);
+		if (service != NULL) {
+			USER_SERVICE_T *user_service =
+				(USER_SERVICE_T *)service->base.userdata;
+			/* close_pending is false on first entry, and when the
+                           wait in vchiq_close_service has been interrupted. */
+			if (!user_service->close_pending) {
+				status = vchiq_remove_service(service->handle);
+				if (status != VCHIQ_SUCCESS)
+					break;
+			}
+
+			/* close_pending is true once the underlying service
+			   has been closed until the client library calls the
+			   CLOSE_DELIVERED ioctl, signalling close_event. */
+			if (user_service->close_pending &&
+				down_interruptible(&user_service->close_event))
+				status = VCHIQ_RETRY;
+		}
+		else
+			ret = -EINVAL;
+	} break;
+
+	case VCHIQ_IOC_USE_SERVICE:
+	case VCHIQ_IOC_RELEASE_SERVICE:	{
+		VCHIQ_SERVICE_HANDLE_T handle = (VCHIQ_SERVICE_HANDLE_T)arg;
+
+		service = find_service_for_instance(instance, handle);
+		if (service != NULL) {
+			status = (cmd == VCHIQ_IOC_USE_SERVICE)	?
+				vchiq_use_service_internal(service) :
+				vchiq_release_service_internal(service);
+			if (status != VCHIQ_SUCCESS) {
+				vchiq_log_error(vchiq_susp_log_level,
+					"%s: cmd %s returned error %d for "
+					"service %c%c%c%c:%03d",
+					__func__,
+					(cmd == VCHIQ_IOC_USE_SERVICE) ?
+						"VCHIQ_IOC_USE_SERVICE" :
+						"VCHIQ_IOC_RELEASE_SERVICE",
+					status,
+					VCHIQ_FOURCC_AS_4CHARS(
+						service->base.fourcc),
+					service->client_id);
+				ret = -EINVAL;
+			}
+		} else
+			ret = -EINVAL;
+	} break;
+
+	case VCHIQ_IOC_QUEUE_MESSAGE: {
+		VCHIQ_QUEUE_MESSAGE_T args;
+		if (copy_from_user
+			 (&args, (const void __user *)arg,
+			  sizeof(args)) != 0) {
+			ret = -EFAULT;
+			break;
+		}
+
+		service = find_service_for_instance(instance, args.handle);
+
+		if ((service != NULL) && (args.count <= MAX_ELEMENTS)) {
+			/* Copy elements into kernel space */
+			VCHIQ_ELEMENT_T elements[MAX_ELEMENTS];
+			if (copy_from_user(elements, args.elements,
+				args.count * sizeof(VCHIQ_ELEMENT_T)) == 0)
+				status = vchiq_queue_message
+					(args.handle,
+					elements, args.count);
+			else
+				ret = -EFAULT;
+		} else {
+			ret = -EINVAL;
+		}
+	} break;
+
+	case VCHIQ_IOC_QUEUE_BULK_TRANSMIT:
+	case VCHIQ_IOC_QUEUE_BULK_RECEIVE: {
+		VCHIQ_QUEUE_BULK_TRANSFER_T args;
+		struct bulk_waiter_node *waiter = NULL;
+		VCHIQ_BULK_DIR_T dir =
+			(cmd == VCHIQ_IOC_QUEUE_BULK_TRANSMIT) ?
+			VCHIQ_BULK_TRANSMIT : VCHIQ_BULK_RECEIVE;
+
+		if (copy_from_user
+			(&args, (const void __user *)arg,
+			sizeof(args)) != 0) {
+			ret = -EFAULT;
+			break;
+		}
+
+		service = find_service_for_instance(instance, args.handle);
+		if (!service) {
+			ret = -EINVAL;
+			break;
+		}
+
+		if (args.mode == VCHIQ_BULK_MODE_BLOCKING) {
+			waiter = kzalloc(sizeof(struct bulk_waiter_node),
+				GFP_KERNEL);
+			if (!waiter) {
+				ret = -ENOMEM;
+				break;
+			}
+			args.userdata = &waiter->bulk_waiter;
+		} else if (args.mode == VCHIQ_BULK_MODE_WAITING) {
+			struct list_head *pos;
+			mutex_lock(&instance->bulk_waiter_list_mutex);
+			list_for_each(pos, &instance->bulk_waiter_list) {
+				if (list_entry(pos, struct bulk_waiter_node,
+					list)->pid == current->pid) {
+					waiter = list_entry(pos,
+						struct bulk_waiter_node,
+						list);
+					list_del(pos);
+					break;
+				}
+
+			}
+			mutex_unlock(&instance->bulk_waiter_list_mutex);
+			if (!waiter) {
+				vchiq_log_error(vchiq_arm_log_level,
+					"no bulk_waiter found for pid %d",
+					current->pid);
+				ret = -ESRCH;
+				break;
+			}
+			vchiq_log_info(vchiq_arm_log_level,
+				"found bulk_waiter %x for pid %d",
+				(unsigned int)waiter, current->pid);
+			args.userdata = &waiter->bulk_waiter;
+		}
+		status = vchiq_bulk_transfer
+			(args.handle,
+			 VCHI_MEM_HANDLE_INVALID,
+			 args.data, args.size,
+			 args.userdata, args.mode,
+			 dir);
+		if (!waiter)
+			break;
+		if ((status != VCHIQ_RETRY) || fatal_signal_pending(current) ||
+			!waiter->bulk_waiter.bulk) {
+			if (waiter->bulk_waiter.bulk) {
+				/* Cancel the signal when the transfer
+				** completes. */
+				spin_lock(&bulk_waiter_spinlock);
+				waiter->bulk_waiter.bulk->userdata = NULL;
+				spin_unlock(&bulk_waiter_spinlock);
+			}
+			kfree(waiter);
+		} else {
+			const VCHIQ_BULK_MODE_T mode_waiting =
+				VCHIQ_BULK_MODE_WAITING;
+			waiter->pid = current->pid;
+			mutex_lock(&instance->bulk_waiter_list_mutex);
+			list_add(&waiter->list, &instance->bulk_waiter_list);
+			mutex_unlock(&instance->bulk_waiter_list_mutex);
+			vchiq_log_info(vchiq_arm_log_level,
+				"saved bulk_waiter %x for pid %d",
+				(unsigned int)waiter, current->pid);
+
+			if (copy_to_user((void __user *)
+				&(((VCHIQ_QUEUE_BULK_TRANSFER_T __user *)
+					arg)->mode),
+				(const void *)&mode_waiting,
+				sizeof(mode_waiting)) != 0)
+				ret = -EFAULT;
+		}
+	} break;
+
+	case VCHIQ_IOC_AWAIT_COMPLETION: {
+		VCHIQ_AWAIT_COMPLETION_T args;
+
+		DEBUG_TRACE(AWAIT_COMPLETION_LINE);
+		if (!instance->connected) {
+			ret = -ENOTCONN;
+			break;
+		}
+
+		if (copy_from_user(&args, (const void __user *)arg,
+			sizeof(args)) != 0) {
+			ret = -EFAULT;
+			break;
+		}
+
+		mutex_lock(&instance->completion_mutex);
+
+		DEBUG_TRACE(AWAIT_COMPLETION_LINE);
+		while ((instance->completion_remove ==
+			instance->completion_insert)
+			&& !instance->closing) {
+			int rc;
+			DEBUG_TRACE(AWAIT_COMPLETION_LINE);
+			mutex_unlock(&instance->completion_mutex);
+			rc = down_interruptible(&instance->insert_event);
+			mutex_lock(&instance->completion_mutex);
+			if (rc != 0) {
+				DEBUG_TRACE(AWAIT_COMPLETION_LINE);
+				vchiq_log_info(vchiq_arm_log_level,
+					"AWAIT_COMPLETION interrupted");
+				ret = -EINTR;
+				break;
+			}
+		}
+		DEBUG_TRACE(AWAIT_COMPLETION_LINE);
+
+		/* A read memory barrier is needed to stop prefetch of a stale
+		** completion record
+		*/
+		rmb();
+
+		if (ret == 0) {
+			int msgbufcount = args.msgbufcount;
+			for (ret = 0; ret < args.count; ret++) {
+				VCHIQ_COMPLETION_DATA_T *completion;
+				VCHIQ_SERVICE_T *service;
+				USER_SERVICE_T *user_service;
+				VCHIQ_HEADER_T *header;
+				if (instance->completion_remove ==
+					instance->completion_insert)
+					break;
+				completion = &instance->completions[
+					instance->completion_remove &
+					(MAX_COMPLETIONS - 1)];
+
+				service = completion->service_userdata;
+				user_service = service->base.userdata;
+				completion->service_userdata =
+					user_service->userdata;
+
+				header = completion->header;
+				if (header) {
+					void __user *msgbuf;
+					int msglen;
+
+					msglen = header->size +
+						sizeof(VCHIQ_HEADER_T);
+					/* This must be a VCHIQ-style service */
+					if (args.msgbufsize < msglen) {
+						vchiq_log_error(
+							vchiq_arm_log_level,
+							"header %x: msgbufsize"
+							" %x < msglen %x",
+							(unsigned int)header,
+							args.msgbufsize,
+							msglen);
+						WARN(1, "invalid message "
+							"size\n");
+						if (ret == 0)
+							ret = -EMSGSIZE;
+						break;
+					}
+					if (msgbufcount <= 0)
+						/* Stall here for lack of a
+						** buffer for the message. */
+						break;
+					/* Get the pointer from user space */
+					msgbufcount--;
+					if (copy_from_user(&msgbuf,
+						(const void __user *)
+						&args.msgbufs[msgbufcount],
+						sizeof(msgbuf)) != 0) {
+						if (ret == 0)
+							ret = -EFAULT;
+						break;
+					}
+
+					/* Copy the message to user space */
+					if (copy_to_user(msgbuf, header,
+						msglen) != 0) {
+						if (ret == 0)
+							ret = -EFAULT;
+						break;
+					}
+
+					/* Now it has been copied, the message
+					** can be released. */
+					vchiq_release_message(service->handle,
+						header);
+
+					/* The completion must point to the
+					** msgbuf. */
+					completion->header = msgbuf;
+				}
+
+				if ((completion->reason ==
+					VCHIQ_SERVICE_CLOSED) &&
+					!instance->use_close_delivered)
+					unlock_service(service);
+
+				if (copy_to_user((void __user *)(
+					(size_t)args.buf +
+					ret * sizeof(VCHIQ_COMPLETION_DATA_T)),
+					completion,
+					sizeof(VCHIQ_COMPLETION_DATA_T)) != 0) {
+						if (ret == 0)
+							ret = -EFAULT;
+					break;
+				}
+
+				instance->completion_remove++;
+			}
+
+			if (msgbufcount != args.msgbufcount) {
+				if (copy_to_user((void __user *)
+					&((VCHIQ_AWAIT_COMPLETION_T *)arg)->
+						msgbufcount,
+					&msgbufcount,
+					sizeof(msgbufcount)) != 0) {
+					ret = -EFAULT;
+				}
+			}
+		}
+
+		if (ret != 0)
+			up(&instance->remove_event);
+		mutex_unlock(&instance->completion_mutex);
+		DEBUG_TRACE(AWAIT_COMPLETION_LINE);
+	} break;
+
+	case VCHIQ_IOC_DEQUEUE_MESSAGE: {
+		VCHIQ_DEQUEUE_MESSAGE_T args;
+		USER_SERVICE_T *user_service;
+		VCHIQ_HEADER_T *header;
+
+		DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
+		if (copy_from_user
+			 (&args, (const void __user *)arg,
+			  sizeof(args)) != 0) {
+			ret = -EFAULT;
+			break;
+		}
+		service = find_service_for_instance(instance, args.handle);
+		if (!service) {
+			ret = -EINVAL;
+			break;
+		}
+		user_service = (USER_SERVICE_T *)service->base.userdata;
+		if (user_service->is_vchi == 0) {
+			ret = -EINVAL;
+			break;
+		}
+
+		spin_lock(&msg_queue_spinlock);
+		if (user_service->msg_remove == user_service->msg_insert) {
+			if (!args.blocking) {
+				spin_unlock(&msg_queue_spinlock);
+				DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
+				ret = -EWOULDBLOCK;
+				break;
+			}
+			user_service->dequeue_pending = 1;
+			do {
+				spin_unlock(&msg_queue_spinlock);
+				DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
+				if (down_interruptible(
+					&user_service->insert_event) != 0) {
+					vchiq_log_info(vchiq_arm_log_level,
+						"DEQUEUE_MESSAGE interrupted");
+					ret = -EINTR;
+					break;
+				}
+				spin_lock(&msg_queue_spinlock);
+			} while (user_service->msg_remove ==
+				user_service->msg_insert);
+
+			if (ret)
+				break;
+		}
+
+		BUG_ON((int)(user_service->msg_insert -
+			user_service->msg_remove) < 0);
+
+		header = user_service->msg_queue[user_service->msg_remove &
+			(MSG_QUEUE_SIZE - 1)];
+		user_service->msg_remove++;
+		spin_unlock(&msg_queue_spinlock);
+
+		up(&user_service->remove_event);
+		if (header == NULL)
+			ret = -ENOTCONN;
+		else if (header->size <= args.bufsize) {
+			/* Copy to user space if msgbuf is not NULL */
+			if ((args.buf == NULL) ||
+				(copy_to_user((void __user *)args.buf,
+				header->data,
+				header->size) == 0)) {
+				ret = header->size;
+				vchiq_release_message(
+					service->handle,
+					header);
+			} else
+				ret = -EFAULT;
+		} else {
+			vchiq_log_error(vchiq_arm_log_level,
+				"header %x: bufsize %x < size %x",
+				(unsigned int)header, args.bufsize,
+				header->size);
+			WARN(1, "invalid size\n");
+			ret = -EMSGSIZE;
+		}
+		DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
+	} break;
+
+	case VCHIQ_IOC_GET_CLIENT_ID: {
+		VCHIQ_SERVICE_HANDLE_T handle = (VCHIQ_SERVICE_HANDLE_T)arg;
+
+		ret = vchiq_get_client_id(handle);
+	} break;
+
+	case VCHIQ_IOC_GET_CONFIG: {
+		VCHIQ_GET_CONFIG_T args;
+		VCHIQ_CONFIG_T config;
+
+		if (copy_from_user(&args, (const void __user *)arg,
+			sizeof(args)) != 0) {
+			ret = -EFAULT;
+			break;
+		}
+		if (args.config_size > sizeof(config)) {
+			ret = -EINVAL;
+			break;
+		}
+		status = vchiq_get_config(instance, args.config_size, &config);
+		if (status == VCHIQ_SUCCESS) {
+			if (copy_to_user((void __user *)args.pconfig,
+				    &config, args.config_size) != 0) {
+				ret = -EFAULT;
+				break;
+			}
+		}
+	} break;
+
+	case VCHIQ_IOC_SET_SERVICE_OPTION: {
+		VCHIQ_SET_SERVICE_OPTION_T args;
+
+		if (copy_from_user(
+			&args, (const void __user *)arg,
+			sizeof(args)) != 0) {
+			ret = -EFAULT;
+			break;
+		}
+
+		service = find_service_for_instance(instance, args.handle);
+		if (!service) {
+			ret = -EINVAL;
+			break;
+		}
+
+		status = vchiq_set_service_option(
+				args.handle, args.option, args.value);
+	} break;
+
+	case VCHIQ_IOC_DUMP_PHYS_MEM: {
+		VCHIQ_DUMP_MEM_T  args;
+
+		if (copy_from_user
+			 (&args, (const void __user *)arg,
+			  sizeof(args)) != 0) {
+			ret = -EFAULT;
+			break;
+		}
+		dump_phys_mem(args.virt_addr, args.num_bytes);
+	} break;
+
+	case VCHIQ_IOC_LIB_VERSION: {
+		unsigned int lib_version = (unsigned int)arg;
+
+		if (lib_version < VCHIQ_VERSION_MIN)
+			ret = -EINVAL;
+		else if (lib_version >= VCHIQ_VERSION_CLOSE_DELIVERED)
+			instance->use_close_delivered = 1;
+	} break;
+
+	case VCHIQ_IOC_CLOSE_DELIVERED: {
+		VCHIQ_SERVICE_HANDLE_T handle = (VCHIQ_SERVICE_HANDLE_T)arg;
+
+		service = find_closed_service_for_instance(instance, handle);
+		if (service != NULL) {
+			USER_SERVICE_T *user_service =
+				(USER_SERVICE_T *)service->base.userdata;
+			close_delivered(user_service);
+		}
+		else
+			ret = -EINVAL;
+	} break;
+
+	default:
+		ret = -ENOTTY;
+		break;
+	}
+
+	if (service)
+		unlock_service(service);
+
+	if (ret == 0) {
+		if (status == VCHIQ_ERROR)
+			ret = -EIO;
+		else if (status == VCHIQ_RETRY)
+			ret = -EINTR;
+	}
+
+	if ((status == VCHIQ_SUCCESS) && (ret < 0) && (ret != -EINTR) &&
+		(ret != -EWOULDBLOCK))
+		vchiq_log_info(vchiq_arm_log_level,
+			"  ioctl instance %lx, cmd %s -> status %d, %ld",
+			(unsigned long)instance,
+			(_IOC_NR(cmd) <= VCHIQ_IOC_MAX) ?
+				ioctl_names[_IOC_NR(cmd)] :
+				"<invalid>",
+			status, ret);
+	else
+		vchiq_log_trace(vchiq_arm_log_level,
+			"  ioctl instance %lx, cmd %s -> status %d, %ld",
+			(unsigned long)instance,
+			(_IOC_NR(cmd) <= VCHIQ_IOC_MAX) ?
+				ioctl_names[_IOC_NR(cmd)] :
+				"<invalid>",
+			status, ret);
+
+	return ret;
+}
+
+/****************************************************************************
+*
+*   vchiq_open
+*
+***************************************************************************/
+
+static int
+vchiq_open(struct inode *inode, struct file *file)
+{
+	int dev = iminor(inode) & 0x0f;
+	vchiq_log_info(vchiq_arm_log_level, "vchiq_open");
+	switch (dev) {
+	case VCHIQ_MINOR: {
+		int ret;
+		VCHIQ_STATE_T *state = vchiq_get_state();
+		VCHIQ_INSTANCE_T instance;
+
+		if (!state) {
+			vchiq_log_error(vchiq_arm_log_level,
+				"vchiq has no connection to VideoCore");
+			return -ENOTCONN;
+		}
+
+		instance = kzalloc(sizeof(*instance), GFP_KERNEL);
+		if (!instance)
+			return -ENOMEM;
+
+		instance->state = state;
+		instance->pid = current->tgid;
+
+		ret = vchiq_debugfs_add_instance(instance);
+		if (ret != 0) {
+			kfree(instance);
+			return ret;
+		}
+
+		sema_init(&instance->insert_event, 0);
+		sema_init(&instance->remove_event, 0);
+		mutex_init(&instance->completion_mutex);
+		mutex_init(&instance->bulk_waiter_list_mutex);
+		INIT_LIST_HEAD(&instance->bulk_waiter_list);
+
+		file->private_data = instance;
+	} break;
+
+	default:
+		vchiq_log_error(vchiq_arm_log_level,
+			"Unknown minor device: %d", dev);
+		return -ENXIO;
+	}
+
+	return 0;
+}
+
+/****************************************************************************
+*
+*   vchiq_release
+*
+***************************************************************************/
+
+static int
+vchiq_release(struct inode *inode, struct file *file)
+{
+	int dev = iminor(inode) & 0x0f;
+	int ret = 0;
+	switch (dev) {
+	case VCHIQ_MINOR: {
+		VCHIQ_INSTANCE_T instance = file->private_data;
+		VCHIQ_STATE_T *state = vchiq_get_state();
+		VCHIQ_SERVICE_T *service;
+		int i;
+
+		vchiq_log_info(vchiq_arm_log_level,
+			"vchiq_release: instance=%lx",
+			(unsigned long)instance);
+
+		if (!state) {
+			ret = -EPERM;
+			goto out;
+		}
+
+		/* Ensure videocore is awake to allow termination. */
+		vchiq_use_internal(instance->state, NULL,
+				USE_TYPE_VCHIQ);
+
+		mutex_lock(&instance->completion_mutex);
+
+		/* Wake the completion thread and ask it to exit */
+		instance->closing = 1;
+		up(&instance->insert_event);
+
+		mutex_unlock(&instance->completion_mutex);
+
+		/* Wake the slot handler if the completion queue is full. */
+		up(&instance->remove_event);
+
+		/* Mark all services for termination... */
+		i = 0;
+		while ((service = next_service_by_instance(state, instance,
+			&i)) !=	NULL) {
+			USER_SERVICE_T *user_service = service->base.userdata;
+
+			/* Wake the slot handler if the msg queue is full. */
+			up(&user_service->remove_event);
+
+			vchiq_terminate_service_internal(service);
+			unlock_service(service);
+		}
+
+		/* ...and wait for them to die */
+		i = 0;
+		while ((service = next_service_by_instance(state, instance, &i))
+			!= NULL) {
+			USER_SERVICE_T *user_service = service->base.userdata;
+
+			down(&service->remove_event);
+
+			BUG_ON(service->srvstate != VCHIQ_SRVSTATE_FREE);
+
+			spin_lock(&msg_queue_spinlock);
+
+			while (user_service->msg_remove !=
+				user_service->msg_insert) {
+				VCHIQ_HEADER_T *header = user_service->
+					msg_queue[user_service->msg_remove &
+						(MSG_QUEUE_SIZE - 1)];
+				user_service->msg_remove++;
+				spin_unlock(&msg_queue_spinlock);
+
+				if (header)
+					vchiq_release_message(
+						service->handle,
+						header);
+				spin_lock(&msg_queue_spinlock);
+			}
+
+			spin_unlock(&msg_queue_spinlock);
+
+			unlock_service(service);
+		}
+
+		/* Release any closed services */
+		while (instance->completion_remove !=
+			instance->completion_insert) {
+			VCHIQ_COMPLETION_DATA_T *completion;
+			VCHIQ_SERVICE_T *service;
+			completion = &instance->completions[
+				instance->completion_remove &
+				(MAX_COMPLETIONS - 1)];
+			service = completion->service_userdata;
+			if (completion->reason == VCHIQ_SERVICE_CLOSED)
+			{
+				USER_SERVICE_T *user_service =
+					service->base.userdata;
+
+				/* Wake any blocked user-thread */
+				if (instance->use_close_delivered)
+					up(&user_service->close_event);
+				unlock_service(service);
+			}
+			instance->completion_remove++;
+		}
+
+		/* Release the PEER service count. */
+		vchiq_release_internal(instance->state, NULL);
+
+		{
+			struct list_head *pos, *next;
+			list_for_each_safe(pos, next,
+				&instance->bulk_waiter_list) {
+				struct bulk_waiter_node *waiter;
+				waiter = list_entry(pos,
+					struct bulk_waiter_node,
+					list);
+				list_del(pos);
+				vchiq_log_info(vchiq_arm_log_level,
+					"bulk_waiter - cleaned up %x "
+					"for pid %d",
+					(unsigned int)waiter, waiter->pid);
+				kfree(waiter);
+			}
+		}
+
+		vchiq_debugfs_remove_instance(instance);
+
+		kfree(instance);
+		file->private_data = NULL;
+	} break;
+
+	default:
+		vchiq_log_error(vchiq_arm_log_level,
+			"Unknown minor device: %d", dev);
+		ret = -ENXIO;
+	}
+
+out:
+	return ret;
+}
+
+/****************************************************************************
+*
+*   vchiq_dump
+*
+***************************************************************************/
+
+void
+vchiq_dump(void *dump_context, const char *str, int len)
+{
+	DUMP_CONTEXT_T *context = (DUMP_CONTEXT_T *)dump_context;
+
+	if (context->actual < context->space) {
+		int copy_bytes;
+		if (context->offset > 0) {
+			int skip_bytes = min(len, (int)context->offset);
+			str += skip_bytes;
+			len -= skip_bytes;
+			context->offset -= skip_bytes;
+			if (context->offset > 0)
+				return;
+		}
+		copy_bytes = min(len, (int)(context->space - context->actual));
+		if (copy_bytes == 0)
+			return;
+		if (copy_to_user(context->buf + context->actual, str,
+			copy_bytes))
+			context->actual = -EFAULT;
+		context->actual += copy_bytes;
+		len -= copy_bytes;
+
+		/* If tne terminating NUL is included in the length, then it
+		** marks the end of a line and should be replaced with a
+		** carriage return. */
+		if ((len == 0) && (str[copy_bytes - 1] == '\0')) {
+			char cr = '\n';
+			if (copy_to_user(context->buf + context->actual - 1,
+				&cr, 1))
+				context->actual = -EFAULT;
+		}
+	}
+}
+
+/****************************************************************************
+*
+*   vchiq_dump_platform_instance_state
+*
+***************************************************************************/
+
+void
+vchiq_dump_platform_instances(void *dump_context)
+{
+	VCHIQ_STATE_T *state = vchiq_get_state();
+	char buf[80];
+	int len;
+	int i;
+
+	/* There is no list of instances, so instead scan all services,
+		marking those that have been dumped. */
+
+	for (i = 0; i < state->unused_service; i++) {
+		VCHIQ_SERVICE_T *service = state->services[i];
+		VCHIQ_INSTANCE_T instance;
+
+		if (service && (service->base.callback == service_callback)) {
+			instance = service->instance;
+			if (instance)
+				instance->mark = 0;
+		}
+	}
+
+	for (i = 0; i < state->unused_service; i++) {
+		VCHIQ_SERVICE_T *service = state->services[i];
+		VCHIQ_INSTANCE_T instance;
+
+		if (service && (service->base.callback == service_callback)) {
+			instance = service->instance;
+			if (instance && !instance->mark) {
+				len = snprintf(buf, sizeof(buf),
+					"Instance %x: pid %d,%s completions "
+						"%d/%d",
+					(unsigned int)instance, instance->pid,
+					instance->connected ? " connected, " :
+						"",
+					instance->completion_insert -
+						instance->completion_remove,
+					MAX_COMPLETIONS);
+
+				vchiq_dump(dump_context, buf, len + 1);
+
+				instance->mark = 1;
+			}
+		}
+	}
+}
+
+/****************************************************************************
+*
+*   vchiq_dump_platform_service_state
+*
+***************************************************************************/
+
+void
+vchiq_dump_platform_service_state(void *dump_context, VCHIQ_SERVICE_T *service)
+{
+	USER_SERVICE_T *user_service = (USER_SERVICE_T *)service->base.userdata;
+	char buf[80];
+	int len;
+
+	len = snprintf(buf, sizeof(buf), "  instance %x",
+		(unsigned int)service->instance);
+
+	if ((service->base.callback == service_callback) &&
+		user_service->is_vchi) {
+		len += snprintf(buf + len, sizeof(buf) - len,
+			", %d/%d messages",
+			user_service->msg_insert - user_service->msg_remove,
+			MSG_QUEUE_SIZE);
+
+		if (user_service->dequeue_pending)
+			len += snprintf(buf + len, sizeof(buf) - len,
+				" (dequeue pending)");
+	}
+
+	vchiq_dump(dump_context, buf, len + 1);
+}
+
+/****************************************************************************
+*
+*   dump_user_mem
+*
+***************************************************************************/
+
+static void
+dump_phys_mem(void *virt_addr, uint32_t num_bytes)
+{
+	int            rc;
+	uint8_t       *end_virt_addr = virt_addr + num_bytes;
+	int            num_pages;
+	int            offset;
+	int            end_offset;
+	int            page_idx;
+	int            prev_idx;
+	struct page   *page;
+	struct page  **pages;
+	uint8_t       *kmapped_virt_ptr;
+
+	/* Align virtAddr and endVirtAddr to 16 byte boundaries. */
+
+	virt_addr = (void *)((unsigned long)virt_addr & ~0x0fuL);
+	end_virt_addr = (void *)(((unsigned long)end_virt_addr + 15uL) &
+		~0x0fuL);
+
+	offset = (int)(long)virt_addr & (PAGE_SIZE - 1);
+	end_offset = (int)(long)end_virt_addr & (PAGE_SIZE - 1);
+
+	num_pages = (offset + num_bytes + PAGE_SIZE - 1) / PAGE_SIZE;
+
+	pages = kmalloc(sizeof(struct page *) * num_pages, GFP_KERNEL);
+	if (pages == NULL) {
+		vchiq_log_error(vchiq_arm_log_level,
+			"Unable to allocation memory for %d pages\n",
+			num_pages);
+		return;
+	}
+
+	down_read(&current->mm->mmap_sem);
+	rc = get_user_pages(current,      /* task */
+		current->mm,              /* mm */
+		(unsigned long)virt_addr, /* start */
+		num_pages,                /* len */
+		0,                        /* write */
+		0,                        /* force */
+		pages,                    /* pages (array of page pointers) */
+		NULL);                    /* vmas */
+	up_read(&current->mm->mmap_sem);
+
+	prev_idx = -1;
+	page = NULL;
+
+	while (offset < end_offset) {
+
+		int page_offset = offset % PAGE_SIZE;
+		page_idx = offset / PAGE_SIZE;
+
+		if (page_idx != prev_idx) {
+
+			if (page != NULL)
+				kunmap(page);
+			page = pages[page_idx];
+			kmapped_virt_ptr = kmap(page);
+
+			prev_idx = page_idx;
+		}
+
+		if (vchiq_arm_log_level >= VCHIQ_LOG_TRACE)
+			vchiq_log_dump_mem("ph",
+				(uint32_t)(unsigned long)&kmapped_virt_ptr[
+					page_offset],
+				&kmapped_virt_ptr[page_offset], 16);
+
+		offset += 16;
+	}
+	if (page != NULL)
+		kunmap(page);
+
+	for (page_idx = 0; page_idx < num_pages; page_idx++)
+		page_cache_release(pages[page_idx]);
+
+	kfree(pages);
+}
+
+/****************************************************************************
+*
+*   vchiq_read
+*
+***************************************************************************/
+
+static ssize_t
+vchiq_read(struct file *file, char __user *buf,
+	size_t count, loff_t *ppos)
+{
+	DUMP_CONTEXT_T context;
+	context.buf = buf;
+	context.actual = 0;
+	context.space = count;
+	context.offset = *ppos;
+
+	vchiq_dump_state(&context, &g_state);
+
+	*ppos += context.actual;
+
+	return context.actual;
+}
+
+VCHIQ_STATE_T *
+vchiq_get_state(void)
+{
+
+	if (g_state.remote == NULL)
+		printk(KERN_ERR "%s: g_state.remote == NULL\n", __func__);
+	else if (g_state.remote->initialised != 1)
+		printk(KERN_NOTICE "%s: g_state.remote->initialised != 1 (%d)\n",
+			__func__, g_state.remote->initialised);
+
+	return ((g_state.remote != NULL) &&
+		(g_state.remote->initialised == 1)) ? &g_state : NULL;
+}
+
+static const struct file_operations
+vchiq_fops = {
+	.owner = THIS_MODULE,
+	.unlocked_ioctl = vchiq_ioctl,
+	.open = vchiq_open,
+	.release = vchiq_release,
+	.read = vchiq_read
+};
+
+/*
+ * Autosuspend related functionality
+ */
+
+int
+vchiq_videocore_wanted(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	if (!arm_state)
+		/* autosuspend not supported - always return wanted */
+		return 1;
+	else if (arm_state->blocked_count)
+		return 1;
+	else if (!arm_state->videocore_use_count)
+		/* usage count zero - check for override unless we're forcing */
+		if (arm_state->resume_blocked)
+			return 0;
+		else
+			return vchiq_platform_videocore_wanted(state);
+	else
+		/* non-zero usage count - videocore still required */
+		return 1;
+}
+
+static VCHIQ_STATUS_T
+vchiq_keepalive_vchiq_callback(VCHIQ_REASON_T reason,
+	VCHIQ_HEADER_T *header,
+	VCHIQ_SERVICE_HANDLE_T service_user,
+	void *bulk_user)
+{
+	vchiq_log_error(vchiq_susp_log_level,
+		"%s callback reason %d", __func__, reason);
+	return 0;
+}
+
+static int
+vchiq_keepalive_thread_func(void *v)
+{
+	VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+
+	VCHIQ_STATUS_T status;
+	VCHIQ_INSTANCE_T instance;
+	VCHIQ_SERVICE_HANDLE_T ka_handle;
+
+	VCHIQ_SERVICE_PARAMS_T params = {
+		.fourcc      = VCHIQ_MAKE_FOURCC('K', 'E', 'E', 'P'),
+		.callback    = vchiq_keepalive_vchiq_callback,
+		.version     = KEEPALIVE_VER,
+		.version_min = KEEPALIVE_VER_MIN
+	};
+
+	status = vchiq_initialise(&instance);
+	if (status != VCHIQ_SUCCESS) {
+		vchiq_log_error(vchiq_susp_log_level,
+			"%s vchiq_initialise failed %d", __func__, status);
+		goto exit;
+	}
+
+	status = vchiq_connect(instance);
+	if (status != VCHIQ_SUCCESS) {
+		vchiq_log_error(vchiq_susp_log_level,
+			"%s vchiq_connect failed %d", __func__, status);
+		goto shutdown;
+	}
+
+	status = vchiq_add_service(instance, &params, &ka_handle);
+	if (status != VCHIQ_SUCCESS) {
+		vchiq_log_error(vchiq_susp_log_level,
+			"%s vchiq_open_service failed %d", __func__, status);
+		goto shutdown;
+	}
+
+	while (1) {
+		long rc = 0, uc = 0;
+		if (wait_for_completion_interruptible(&arm_state->ka_evt)
+				!= 0) {
+			vchiq_log_error(vchiq_susp_log_level,
+				"%s interrupted", __func__);
+			flush_signals(current);
+			continue;
+		}
+
+		/* read and clear counters.  Do release_count then use_count to
+		 * prevent getting more releases than uses */
+		rc = atomic_xchg(&arm_state->ka_release_count, 0);
+		uc = atomic_xchg(&arm_state->ka_use_count, 0);
+
+		/* Call use/release service the requisite number of times.
+		 * Process use before release so use counts don't go negative */
+		while (uc--) {
+			atomic_inc(&arm_state->ka_use_ack_count);
+			status = vchiq_use_service(ka_handle);
+			if (status != VCHIQ_SUCCESS) {
+				vchiq_log_error(vchiq_susp_log_level,
+					"%s vchiq_use_service error %d",
+					__func__, status);
+			}
+		}
+		while (rc--) {
+			status = vchiq_release_service(ka_handle);
+			if (status != VCHIQ_SUCCESS) {
+				vchiq_log_error(vchiq_susp_log_level,
+					"%s vchiq_release_service error %d",
+					__func__, status);
+			}
+		}
+	}
+
+shutdown:
+	vchiq_shutdown(instance);
+exit:
+	return 0;
+}
+
+
+
+VCHIQ_STATUS_T
+vchiq_arm_init_state(VCHIQ_STATE_T *state, VCHIQ_ARM_STATE_T *arm_state)
+{
+	VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+
+	if (arm_state) {
+		rwlock_init(&arm_state->susp_res_lock);
+
+		init_completion(&arm_state->ka_evt);
+		atomic_set(&arm_state->ka_use_count, 0);
+		atomic_set(&arm_state->ka_use_ack_count, 0);
+		atomic_set(&arm_state->ka_release_count, 0);
+
+		init_completion(&arm_state->vc_suspend_complete);
+
+		init_completion(&arm_state->vc_resume_complete);
+		/* Initialise to 'done' state.  We only want to block on resume
+		 * completion while videocore is suspended. */
+		set_resume_state(arm_state, VC_RESUME_RESUMED);
+
+		init_completion(&arm_state->resume_blocker);
+		/* Initialise to 'done' state.  We only want to block on this
+		 * completion while resume is blocked */
+		complete_all(&arm_state->resume_blocker);
+
+		init_completion(&arm_state->blocked_blocker);
+		/* Initialise to 'done' state.  We only want to block on this
+		 * completion while things are waiting on the resume blocker */
+		complete_all(&arm_state->blocked_blocker);
+
+		arm_state->suspend_timer_timeout = SUSPEND_TIMER_TIMEOUT_MS;
+		arm_state->suspend_timer_running = 0;
+		init_timer(&arm_state->suspend_timer);
+		arm_state->suspend_timer.data = (unsigned long)(state);
+		arm_state->suspend_timer.function = suspend_timer_callback;
+
+		arm_state->first_connect = 0;
+
+	}
+	return status;
+}
+
+/*
+** Functions to modify the state variables;
+**	set_suspend_state
+**	set_resume_state
+**
+** There are more state variables than we might like, so ensure they remain in
+** step.  Suspend and resume state are maintained separately, since most of
+** these state machines can operate independently.  However, there are a few
+** states where state transitions in one state machine cause a reset to the
+** other state machine.  In addition, there are some completion events which
+** need to occur on state machine reset and end-state(s), so these are also
+** dealt with in these functions.
+**
+** In all states we set the state variable according to the input, but in some
+** cases we perform additional steps outlined below;
+**
+** VC_SUSPEND_IDLE - Initialise the suspend completion at the same time.
+**			The suspend completion is completed after any suspend
+**			attempt.  When we reset the state machine we also reset
+**			the completion.  This reset occurs when videocore is
+**			resumed, and also if we initiate suspend after a suspend
+**			failure.
+**
+** VC_SUSPEND_IN_PROGRESS - This state is considered the point of no return for
+**			suspend - ie from this point on we must try to suspend
+**			before resuming can occur.  We therefore also reset the
+**			resume state machine to VC_RESUME_IDLE in this state.
+**
+** VC_SUSPEND_SUSPENDED - Suspend has completed successfully. Also call
+**			complete_all on the suspend completion to notify
+**			anything waiting for suspend to happen.
+**
+** VC_SUSPEND_REJECTED - Videocore rejected suspend. Videocore will also
+**			initiate resume, so no need to alter resume state.
+**			We call complete_all on the suspend completion to notify
+**			of suspend rejection.
+**
+** VC_SUSPEND_FAILED - We failed to initiate videocore suspend.  We notify the
+**			suspend completion and reset the resume state machine.
+**
+** VC_RESUME_IDLE - Initialise the resume completion at the same time.  The
+**			resume completion is in it's 'done' state whenever
+**			videcore is running.  Therfore, the VC_RESUME_IDLE state
+**			implies that videocore is suspended.
+**			Hence, any thread which needs to wait until videocore is
+**			running can wait on this completion - it will only block
+**			if videocore is suspended.
+**
+** VC_RESUME_RESUMED - Resume has completed successfully.  Videocore is running.
+**			Call complete_all on the resume completion to unblock
+**			any threads waiting for resume.	 Also reset the suspend
+**			state machine to it's idle state.
+**
+** VC_RESUME_FAILED - Currently unused - no mechanism to fail resume exists.
+*/
+
+inline void
+set_suspend_state(VCHIQ_ARM_STATE_T *arm_state,
+	enum vc_suspend_status new_state)
+{
+	/* set the state in all cases */
+	arm_state->vc_suspend_state = new_state;
+
+	/* state specific additional actions */
+	switch (new_state) {
+	case VC_SUSPEND_FORCE_CANCELED:
+		complete_all(&arm_state->vc_suspend_complete);
+		break;
+	case VC_SUSPEND_REJECTED:
+		complete_all(&arm_state->vc_suspend_complete);
+		break;
+	case VC_SUSPEND_FAILED:
+		complete_all(&arm_state->vc_suspend_complete);
+		arm_state->vc_resume_state = VC_RESUME_RESUMED;
+		complete_all(&arm_state->vc_resume_complete);
+		break;
+	case VC_SUSPEND_IDLE:
+		reinit_completion(&arm_state->vc_suspend_complete);
+		break;
+	case VC_SUSPEND_REQUESTED:
+		break;
+	case VC_SUSPEND_IN_PROGRESS:
+		set_resume_state(arm_state, VC_RESUME_IDLE);
+		break;
+	case VC_SUSPEND_SUSPENDED:
+		complete_all(&arm_state->vc_suspend_complete);
+		break;
+	default:
+		BUG();
+		break;
+	}
+}
+
+inline void
+set_resume_state(VCHIQ_ARM_STATE_T *arm_state,
+	enum vc_resume_status new_state)
+{
+	/* set the state in all cases */
+	arm_state->vc_resume_state = new_state;
+
+	/* state specific additional actions */
+	switch (new_state) {
+	case VC_RESUME_FAILED:
+		break;
+	case VC_RESUME_IDLE:
+		reinit_completion(&arm_state->vc_resume_complete);
+		break;
+	case VC_RESUME_REQUESTED:
+		break;
+	case VC_RESUME_IN_PROGRESS:
+		break;
+	case VC_RESUME_RESUMED:
+		complete_all(&arm_state->vc_resume_complete);
+		set_suspend_state(arm_state, VC_SUSPEND_IDLE);
+		break;
+	default:
+		BUG();
+		break;
+	}
+}
+
+
+/* should be called with the write lock held */
+inline void
+start_suspend_timer(VCHIQ_ARM_STATE_T *arm_state)
+{
+	del_timer(&arm_state->suspend_timer);
+	arm_state->suspend_timer.expires = jiffies +
+		msecs_to_jiffies(arm_state->
+			suspend_timer_timeout);
+	add_timer(&arm_state->suspend_timer);
+	arm_state->suspend_timer_running = 1;
+}
+
+/* should be called with the write lock held */
+static inline void
+stop_suspend_timer(VCHIQ_ARM_STATE_T *arm_state)
+{
+	if (arm_state->suspend_timer_running) {
+		del_timer(&arm_state->suspend_timer);
+		arm_state->suspend_timer_running = 0;
+	}
+}
+
+static inline int
+need_resume(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	return (arm_state->vc_suspend_state > VC_SUSPEND_IDLE) &&
+			(arm_state->vc_resume_state < VC_RESUME_REQUESTED) &&
+			vchiq_videocore_wanted(state);
+}
+
+static int
+block_resume(VCHIQ_ARM_STATE_T *arm_state)
+{
+	int status = VCHIQ_SUCCESS;
+	const unsigned long timeout_val =
+				msecs_to_jiffies(FORCE_SUSPEND_TIMEOUT_MS);
+	int resume_count = 0;
+
+	/* Allow any threads which were blocked by the last force suspend to
+	 * complete if they haven't already.  Only give this one shot; if
+	 * blocked_count is incremented after blocked_blocker is completed
+	 * (which only happens when blocked_count hits 0) then those threads
+	 * will have to wait until next time around */
+	if (arm_state->blocked_count) {
+		reinit_completion(&arm_state->blocked_blocker);
+		write_unlock_bh(&arm_state->susp_res_lock);
+		vchiq_log_info(vchiq_susp_log_level, "%s wait for previously "
+			"blocked clients", __func__);
+		if (wait_for_completion_interruptible_timeout(
+				&arm_state->blocked_blocker, timeout_val)
+					<= 0) {
+			vchiq_log_error(vchiq_susp_log_level, "%s wait for "
+				"previously blocked clients failed" , __func__);
+			status = VCHIQ_ERROR;
+			write_lock_bh(&arm_state->susp_res_lock);
+			goto out;
+		}
+		vchiq_log_info(vchiq_susp_log_level, "%s previously blocked "
+			"clients resumed", __func__);
+		write_lock_bh(&arm_state->susp_res_lock);
+	}
+
+	/* We need to wait for resume to complete if it's in process */
+	while (arm_state->vc_resume_state != VC_RESUME_RESUMED &&
+			arm_state->vc_resume_state > VC_RESUME_IDLE) {
+		if (resume_count > 1) {
+			status = VCHIQ_ERROR;
+			vchiq_log_error(vchiq_susp_log_level, "%s waited too "
+				"many times for resume" , __func__);
+			goto out;
+		}
+		write_unlock_bh(&arm_state->susp_res_lock);
+		vchiq_log_info(vchiq_susp_log_level, "%s wait for resume",
+			__func__);
+		if (wait_for_completion_interruptible_timeout(
+				&arm_state->vc_resume_complete, timeout_val)
+					<= 0) {
+			vchiq_log_error(vchiq_susp_log_level, "%s wait for "
+				"resume failed (%s)", __func__,
+				resume_state_names[arm_state->vc_resume_state +
+							VC_RESUME_NUM_OFFSET]);
+			status = VCHIQ_ERROR;
+			write_lock_bh(&arm_state->susp_res_lock);
+			goto out;
+		}
+		vchiq_log_info(vchiq_susp_log_level, "%s resumed", __func__);
+		write_lock_bh(&arm_state->susp_res_lock);
+		resume_count++;
+	}
+	reinit_completion(&arm_state->resume_blocker);
+	arm_state->resume_blocked = 1;
+
+out:
+	return status;
+}
+
+static inline void
+unblock_resume(VCHIQ_ARM_STATE_T *arm_state)
+{
+	complete_all(&arm_state->resume_blocker);
+	arm_state->resume_blocked = 0;
+}
+
+/* Initiate suspend via slot handler. Should be called with the write lock
+ * held */
+VCHIQ_STATUS_T
+vchiq_arm_vcsuspend(VCHIQ_STATE_T *state)
+{
+	VCHIQ_STATUS_T status = VCHIQ_ERROR;
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+
+	if (!arm_state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+	status = VCHIQ_SUCCESS;
+
+
+	switch (arm_state->vc_suspend_state) {
+	case VC_SUSPEND_REQUESTED:
+		vchiq_log_info(vchiq_susp_log_level, "%s: suspend already "
+			"requested", __func__);
+		break;
+	case VC_SUSPEND_IN_PROGRESS:
+		vchiq_log_info(vchiq_susp_log_level, "%s: suspend already in "
+			"progress", __func__);
+		break;
+
+	default:
+		/* We don't expect to be in other states, so log but continue
+		 * anyway */
+		vchiq_log_error(vchiq_susp_log_level,
+			"%s unexpected suspend state %s", __func__,
+			suspend_state_names[arm_state->vc_suspend_state +
+						VC_SUSPEND_NUM_OFFSET]);
+		/* fall through */
+	case VC_SUSPEND_REJECTED:
+	case VC_SUSPEND_FAILED:
+		/* Ensure any idle state actions have been run */
+		set_suspend_state(arm_state, VC_SUSPEND_IDLE);
+		/* fall through */
+	case VC_SUSPEND_IDLE:
+		vchiq_log_info(vchiq_susp_log_level,
+			"%s: suspending", __func__);
+		set_suspend_state(arm_state, VC_SUSPEND_REQUESTED);
+		/* kick the slot handler thread to initiate suspend */
+		request_poll(state, NULL, 0);
+		break;
+	}
+
+out:
+	vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, status);
+	return status;
+}
+
+void
+vchiq_platform_check_suspend(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	int susp = 0;
+
+	if (!arm_state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+
+	write_lock_bh(&arm_state->susp_res_lock);
+	if (arm_state->vc_suspend_state == VC_SUSPEND_REQUESTED &&
+			arm_state->vc_resume_state == VC_RESUME_RESUMED) {
+		set_suspend_state(arm_state, VC_SUSPEND_IN_PROGRESS);
+		susp = 1;
+	}
+	write_unlock_bh(&arm_state->susp_res_lock);
+
+	if (susp)
+		vchiq_platform_suspend(state);
+
+out:
+	vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__);
+	return;
+}
+
+
+static void
+output_timeout_error(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	char service_err[50] = "";
+	int vc_use_count = arm_state->videocore_use_count;
+	int active_services = state->unused_service;
+	int i;
+
+	if (!arm_state->videocore_use_count) {
+		snprintf(service_err, 50, " Videocore usecount is 0");
+		goto output_msg;
+	}
+	for (i = 0; i < active_services; i++) {
+		VCHIQ_SERVICE_T *service_ptr = state->services[i];
+		if (service_ptr && service_ptr->service_use_count &&
+			(service_ptr->srvstate != VCHIQ_SRVSTATE_FREE)) {
+			snprintf(service_err, 50, " %c%c%c%c(%d) service has "
+				"use count %d%s", VCHIQ_FOURCC_AS_4CHARS(
+					service_ptr->base.fourcc),
+				 service_ptr->client_id,
+				 service_ptr->service_use_count,
+				 service_ptr->service_use_count ==
+					 vc_use_count ? "" : " (+ more)");
+			break;
+		}
+	}
+
+output_msg:
+	vchiq_log_error(vchiq_susp_log_level,
+		"timed out waiting for vc suspend (%d).%s",
+		 arm_state->autosuspend_override, service_err);
+
+}
+
+/* Try to get videocore into suspended state, regardless of autosuspend state.
+** We don't actually force suspend, since videocore may get into a bad state
+** if we force suspend at a bad time.  Instead, we wait for autosuspend to
+** determine a good point to suspend.  If this doesn't happen within 100ms we
+** report failure.
+**
+** Returns VCHIQ_SUCCESS if videocore suspended successfully, VCHIQ_RETRY if
+** videocore failed to suspend in time or VCHIQ_ERROR if interrupted.
+*/
+VCHIQ_STATUS_T
+vchiq_arm_force_suspend(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	VCHIQ_STATUS_T status = VCHIQ_ERROR;
+	long rc = 0;
+	int repeat = -1;
+
+	if (!arm_state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+
+	write_lock_bh(&arm_state->susp_res_lock);
+
+	status = block_resume(arm_state);
+	if (status != VCHIQ_SUCCESS)
+		goto unlock;
+	if (arm_state->vc_suspend_state == VC_SUSPEND_SUSPENDED) {
+		/* Already suspended - just block resume and exit */
+		vchiq_log_info(vchiq_susp_log_level, "%s already suspended",
+			__func__);
+		status = VCHIQ_SUCCESS;
+		goto unlock;
+	} else if (arm_state->vc_suspend_state <= VC_SUSPEND_IDLE) {
+		/* initiate suspend immediately in the case that we're waiting
+		 * for the timeout */
+		stop_suspend_timer(arm_state);
+		if (!vchiq_videocore_wanted(state)) {
+			vchiq_log_info(vchiq_susp_log_level, "%s videocore "
+				"idle, initiating suspend", __func__);
+			status = vchiq_arm_vcsuspend(state);
+		} else if (arm_state->autosuspend_override <
+						FORCE_SUSPEND_FAIL_MAX) {
+			vchiq_log_info(vchiq_susp_log_level, "%s letting "
+				"videocore go idle", __func__);
+			status = VCHIQ_SUCCESS;
+		} else {
+			vchiq_log_warning(vchiq_susp_log_level, "%s failed too "
+				"many times - attempting suspend", __func__);
+			status = vchiq_arm_vcsuspend(state);
+		}
+	} else {
+		vchiq_log_info(vchiq_susp_log_level, "%s videocore suspend "
+			"in progress - wait for completion", __func__);
+		status = VCHIQ_SUCCESS;
+	}
+
+	/* Wait for suspend to happen due to system idle (not forced..) */
+	if (status != VCHIQ_SUCCESS)
+		goto unblock_resume;
+
+	do {
+		write_unlock_bh(&arm_state->susp_res_lock);
+
+		rc = wait_for_completion_interruptible_timeout(
+				&arm_state->vc_suspend_complete,
+				msecs_to_jiffies(FORCE_SUSPEND_TIMEOUT_MS));
+
+		write_lock_bh(&arm_state->susp_res_lock);
+		if (rc < 0) {
+			vchiq_log_warning(vchiq_susp_log_level, "%s "
+				"interrupted waiting for suspend", __func__);
+			status = VCHIQ_ERROR;
+			goto unblock_resume;
+		} else if (rc == 0) {
+			if (arm_state->vc_suspend_state > VC_SUSPEND_IDLE) {
+				/* Repeat timeout once if in progress */
+				if (repeat < 0) {
+					repeat = 1;
+					continue;
+				}
+			}
+			arm_state->autosuspend_override++;
+			output_timeout_error(state);
+
+			status = VCHIQ_RETRY;
+			goto unblock_resume;
+		}
+	} while (0 < (repeat--));
+
+	/* Check and report state in case we need to abort ARM suspend */
+	if (arm_state->vc_suspend_state != VC_SUSPEND_SUSPENDED) {
+		status = VCHIQ_RETRY;
+		vchiq_log_error(vchiq_susp_log_level,
+			"%s videocore suspend failed (state %s)", __func__,
+			suspend_state_names[arm_state->vc_suspend_state +
+						VC_SUSPEND_NUM_OFFSET]);
+		/* Reset the state only if it's still in an error state.
+		 * Something could have already initiated another suspend. */
+		if (arm_state->vc_suspend_state < VC_SUSPEND_IDLE)
+			set_suspend_state(arm_state, VC_SUSPEND_IDLE);
+
+		goto unblock_resume;
+	}
+
+	/* successfully suspended - unlock and exit */
+	goto unlock;
+
+unblock_resume:
+	/* all error states need to unblock resume before exit */
+	unblock_resume(arm_state);
+
+unlock:
+	write_unlock_bh(&arm_state->susp_res_lock);
+
+out:
+	vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, status);
+	return status;
+}
+
+void
+vchiq_check_suspend(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+
+	if (!arm_state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+
+	write_lock_bh(&arm_state->susp_res_lock);
+	if (arm_state->vc_suspend_state != VC_SUSPEND_SUSPENDED &&
+			arm_state->first_connect &&
+			!vchiq_videocore_wanted(state)) {
+		vchiq_arm_vcsuspend(state);
+	}
+	write_unlock_bh(&arm_state->susp_res_lock);
+
+out:
+	vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__);
+	return;
+}
+
+
+int
+vchiq_arm_allow_resume(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	int resume = 0;
+	int ret = -1;
+
+	if (!arm_state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+
+	write_lock_bh(&arm_state->susp_res_lock);
+	unblock_resume(arm_state);
+	resume = vchiq_check_resume(state);
+	write_unlock_bh(&arm_state->susp_res_lock);
+
+	if (resume) {
+		if (wait_for_completion_interruptible(
+			&arm_state->vc_resume_complete) < 0) {
+			vchiq_log_error(vchiq_susp_log_level,
+				"%s interrupted", __func__);
+			/* failed, cannot accurately derive suspend
+			 * state, so exit early. */
+			goto out;
+		}
+	}
+
+	read_lock_bh(&arm_state->susp_res_lock);
+	if (arm_state->vc_suspend_state == VC_SUSPEND_SUSPENDED) {
+		vchiq_log_info(vchiq_susp_log_level,
+				"%s: Videocore remains suspended", __func__);
+	} else {
+		vchiq_log_info(vchiq_susp_log_level,
+				"%s: Videocore resumed", __func__);
+		ret = 0;
+	}
+	read_unlock_bh(&arm_state->susp_res_lock);
+out:
+	vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, ret);
+	return ret;
+}
+
+/* This function should be called with the write lock held */
+int
+vchiq_check_resume(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	int resume = 0;
+
+	if (!arm_state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+
+	if (need_resume(state)) {
+		set_resume_state(arm_state, VC_RESUME_REQUESTED);
+		request_poll(state, NULL, 0);
+		resume = 1;
+	}
+
+out:
+	vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__);
+	return resume;
+}
+
+void
+vchiq_platform_check_resume(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	int res = 0;
+
+	if (!arm_state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+
+	write_lock_bh(&arm_state->susp_res_lock);
+	if (arm_state->wake_address == 0) {
+		vchiq_log_info(vchiq_susp_log_level,
+					"%s: already awake", __func__);
+		goto unlock;
+	}
+	if (arm_state->vc_resume_state == VC_RESUME_IN_PROGRESS) {
+		vchiq_log_info(vchiq_susp_log_level,
+					"%s: already resuming", __func__);
+		goto unlock;
+	}
+
+	if (arm_state->vc_resume_state == VC_RESUME_REQUESTED) {
+		set_resume_state(arm_state, VC_RESUME_IN_PROGRESS);
+		res = 1;
+	} else
+		vchiq_log_trace(vchiq_susp_log_level,
+				"%s: not resuming (resume state %s)", __func__,
+				resume_state_names[arm_state->vc_resume_state +
+							VC_RESUME_NUM_OFFSET]);
+
+unlock:
+	write_unlock_bh(&arm_state->susp_res_lock);
+
+	if (res)
+		vchiq_platform_resume(state);
+
+out:
+	vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__);
+	return;
+
+}
+
+
+
+VCHIQ_STATUS_T
+vchiq_use_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
+		enum USE_TYPE_E use_type)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	VCHIQ_STATUS_T ret = VCHIQ_SUCCESS;
+	char entity[16];
+	int *entity_uc;
+	int local_uc, local_entity_uc;
+
+	if (!arm_state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+
+	if (use_type == USE_TYPE_VCHIQ) {
+		sprintf(entity, "VCHIQ:   ");
+		entity_uc = &arm_state->peer_use_count;
+	} else if (service) {
+		sprintf(entity, "%c%c%c%c:%03d",
+			VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
+			service->client_id);
+		entity_uc = &service->service_use_count;
+	} else {
+		vchiq_log_error(vchiq_susp_log_level, "%s null service "
+				"ptr", __func__);
+		ret = VCHIQ_ERROR;
+		goto out;
+	}
+
+	write_lock_bh(&arm_state->susp_res_lock);
+	while (arm_state->resume_blocked) {
+		/* If we call 'use' while force suspend is waiting for suspend,
+		 * then we're about to block the thread which the force is
+		 * waiting to complete, so we're bound to just time out. In this
+		 * case, set the suspend state such that the wait will be
+		 * canceled, so we can complete as quickly as possible. */
+		if (arm_state->resume_blocked && arm_state->vc_suspend_state ==
+				VC_SUSPEND_IDLE) {
+			set_suspend_state(arm_state, VC_SUSPEND_FORCE_CANCELED);
+			break;
+		}
+		/* If suspend is already in progress then we need to block */
+		if (!try_wait_for_completion(&arm_state->resume_blocker)) {
+			/* Indicate that there are threads waiting on the resume
+			 * blocker.  These need to be allowed to complete before
+			 * a _second_ call to force suspend can complete,
+			 * otherwise low priority threads might never actually
+			 * continue */
+			arm_state->blocked_count++;
+			write_unlock_bh(&arm_state->susp_res_lock);
+			vchiq_log_info(vchiq_susp_log_level, "%s %s resume "
+				"blocked - waiting...", __func__, entity);
+			if (wait_for_completion_killable(
+					&arm_state->resume_blocker) != 0) {
+				vchiq_log_error(vchiq_susp_log_level, "%s %s "
+					"wait for resume blocker interrupted",
+					__func__, entity);
+				ret = VCHIQ_ERROR;
+				write_lock_bh(&arm_state->susp_res_lock);
+				arm_state->blocked_count--;
+				write_unlock_bh(&arm_state->susp_res_lock);
+				goto out;
+			}
+			vchiq_log_info(vchiq_susp_log_level, "%s %s resume "
+				"unblocked", __func__, entity);
+			write_lock_bh(&arm_state->susp_res_lock);
+			if (--arm_state->blocked_count == 0)
+				complete_all(&arm_state->blocked_blocker);
+		}
+	}
+
+	stop_suspend_timer(arm_state);
+
+	local_uc = ++arm_state->videocore_use_count;
+	local_entity_uc = ++(*entity_uc);
+
+	/* If there's a pending request which hasn't yet been serviced then
+	 * just clear it.  If we're past VC_SUSPEND_REQUESTED state then
+	 * vc_resume_complete will block until we either resume or fail to
+	 * suspend */
+	if (arm_state->vc_suspend_state <= VC_SUSPEND_REQUESTED)
+		set_suspend_state(arm_state, VC_SUSPEND_IDLE);
+
+	if ((use_type != USE_TYPE_SERVICE_NO_RESUME) && need_resume(state)) {
+		set_resume_state(arm_state, VC_RESUME_REQUESTED);
+		vchiq_log_info(vchiq_susp_log_level,
+			"%s %s count %d, state count %d",
+			__func__, entity, local_entity_uc, local_uc);
+		request_poll(state, NULL, 0);
+	} else
+		vchiq_log_trace(vchiq_susp_log_level,
+			"%s %s count %d, state count %d",
+			__func__, entity, *entity_uc, local_uc);
+
+
+	write_unlock_bh(&arm_state->susp_res_lock);
+
+	/* Completion is in a done state when we're not suspended, so this won't
+	 * block for the non-suspended case. */
+	if (!try_wait_for_completion(&arm_state->vc_resume_complete)) {
+		vchiq_log_info(vchiq_susp_log_level, "%s %s wait for resume",
+			__func__, entity);
+		if (wait_for_completion_killable(
+				&arm_state->vc_resume_complete) != 0) {
+			vchiq_log_error(vchiq_susp_log_level, "%s %s wait for "
+				"resume interrupted", __func__, entity);
+			ret = VCHIQ_ERROR;
+			goto out;
+		}
+		vchiq_log_info(vchiq_susp_log_level, "%s %s resumed", __func__,
+			entity);
+	}
+
+	if (ret == VCHIQ_SUCCESS) {
+		VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+		long ack_cnt = atomic_xchg(&arm_state->ka_use_ack_count, 0);
+		while (ack_cnt && (status == VCHIQ_SUCCESS)) {
+			/* Send the use notify to videocore */
+			status = vchiq_send_remote_use_active(state);
+			if (status == VCHIQ_SUCCESS)
+				ack_cnt--;
+			else
+				atomic_add(ack_cnt,
+					&arm_state->ka_use_ack_count);
+		}
+	}
+
+out:
+	vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, ret);
+	return ret;
+}
+
+VCHIQ_STATUS_T
+vchiq_release_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	VCHIQ_STATUS_T ret = VCHIQ_SUCCESS;
+	char entity[16];
+	int *entity_uc;
+	int local_uc, local_entity_uc;
+
+	if (!arm_state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+
+	if (service) {
+		sprintf(entity, "%c%c%c%c:%03d",
+			VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
+			service->client_id);
+		entity_uc = &service->service_use_count;
+	} else {
+		sprintf(entity, "PEER:   ");
+		entity_uc = &arm_state->peer_use_count;
+	}
+
+	write_lock_bh(&arm_state->susp_res_lock);
+	if (!arm_state->videocore_use_count || !(*entity_uc)) {
+		/* Don't use BUG_ON - don't allow user thread to crash kernel */
+		WARN_ON(!arm_state->videocore_use_count);
+		WARN_ON(!(*entity_uc));
+		ret = VCHIQ_ERROR;
+		goto unlock;
+	}
+	local_uc = --arm_state->videocore_use_count;
+	local_entity_uc = --(*entity_uc);
+
+	if (!vchiq_videocore_wanted(state)) {
+		if (vchiq_platform_use_suspend_timer() &&
+				!arm_state->resume_blocked) {
+			/* Only use the timer if we're not trying to force
+			 * suspend (=> resume_blocked) */
+			start_suspend_timer(arm_state);
+		} else {
+			vchiq_log_info(vchiq_susp_log_level,
+				"%s %s count %d, state count %d - suspending",
+				__func__, entity, *entity_uc,
+				arm_state->videocore_use_count);
+			vchiq_arm_vcsuspend(state);
+		}
+	} else
+		vchiq_log_trace(vchiq_susp_log_level,
+			"%s %s count %d, state count %d",
+			__func__, entity, *entity_uc,
+			arm_state->videocore_use_count);
+
+unlock:
+	write_unlock_bh(&arm_state->susp_res_lock);
+
+out:
+	vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, ret);
+	return ret;
+}
+
+void
+vchiq_on_remote_use(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+	atomic_inc(&arm_state->ka_use_count);
+	complete(&arm_state->ka_evt);
+}
+
+void
+vchiq_on_remote_release(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+	atomic_inc(&arm_state->ka_release_count);
+	complete(&arm_state->ka_evt);
+}
+
+VCHIQ_STATUS_T
+vchiq_use_service_internal(VCHIQ_SERVICE_T *service)
+{
+	return vchiq_use_internal(service->state, service, USE_TYPE_SERVICE);
+}
+
+VCHIQ_STATUS_T
+vchiq_release_service_internal(VCHIQ_SERVICE_T *service)
+{
+	return vchiq_release_internal(service->state, service);
+}
+
+VCHIQ_DEBUGFS_NODE_T *
+vchiq_instance_get_debugfs_node(VCHIQ_INSTANCE_T instance)
+{
+	return &instance->debugfs_node;
+}
+
+int
+vchiq_instance_get_use_count(VCHIQ_INSTANCE_T instance)
+{
+	VCHIQ_SERVICE_T *service;
+	int use_count = 0, i;
+	i = 0;
+	while ((service = next_service_by_instance(instance->state,
+		instance, &i)) != NULL) {
+		use_count += service->service_use_count;
+		unlock_service(service);
+	}
+	return use_count;
+}
+
+int
+vchiq_instance_get_pid(VCHIQ_INSTANCE_T instance)
+{
+	return instance->pid;
+}
+
+int
+vchiq_instance_get_trace(VCHIQ_INSTANCE_T instance)
+{
+	return instance->trace;
+}
+
+void
+vchiq_instance_set_trace(VCHIQ_INSTANCE_T instance, int trace)
+{
+	VCHIQ_SERVICE_T *service;
+	int i;
+	i = 0;
+	while ((service = next_service_by_instance(instance->state,
+		instance, &i)) != NULL) {
+		service->trace = trace;
+		unlock_service(service);
+	}
+	instance->trace = (trace != 0);
+}
+
+static void suspend_timer_callback(unsigned long context)
+{
+	VCHIQ_STATE_T *state = (VCHIQ_STATE_T *)context;
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	if (!arm_state)
+		goto out;
+	vchiq_log_info(vchiq_susp_log_level,
+		"%s - suspend timer expired - check suspend", __func__);
+	vchiq_check_suspend(state);
+out:
+	return;
+}
+
+VCHIQ_STATUS_T
+vchiq_use_service_no_resume(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	VCHIQ_STATUS_T ret = VCHIQ_ERROR;
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	if (service) {
+		ret = vchiq_use_internal(service->state, service,
+				USE_TYPE_SERVICE_NO_RESUME);
+		unlock_service(service);
+	}
+	return ret;
+}
+
+VCHIQ_STATUS_T
+vchiq_use_service(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	VCHIQ_STATUS_T ret = VCHIQ_ERROR;
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	if (service) {
+		ret = vchiq_use_internal(service->state, service,
+				USE_TYPE_SERVICE);
+		unlock_service(service);
+	}
+	return ret;
+}
+
+VCHIQ_STATUS_T
+vchiq_release_service(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	VCHIQ_STATUS_T ret = VCHIQ_ERROR;
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	if (service) {
+		ret = vchiq_release_internal(service->state, service);
+		unlock_service(service);
+	}
+	return ret;
+}
+
+void
+vchiq_dump_service_use_state(VCHIQ_STATE_T *state)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	int i, j = 0;
+	/* Only dump 64 services */
+	static const int local_max_services = 64;
+	/* If there's more than 64 services, only dump ones with
+	 * non-zero counts */
+	int only_nonzero = 0;
+	static const char *nz = "<-- preventing suspend";
+
+	enum vc_suspend_status vc_suspend_state;
+	enum vc_resume_status  vc_resume_state;
+	int peer_count;
+	int vc_use_count;
+	int active_services;
+	struct service_data_struct {
+		int fourcc;
+		int clientid;
+		int use_count;
+	} service_data[local_max_services];
+
+	if (!arm_state)
+		return;
+
+	read_lock_bh(&arm_state->susp_res_lock);
+	vc_suspend_state = arm_state->vc_suspend_state;
+	vc_resume_state  = arm_state->vc_resume_state;
+	peer_count = arm_state->peer_use_count;
+	vc_use_count = arm_state->videocore_use_count;
+	active_services = state->unused_service;
+	if (active_services > local_max_services)
+		only_nonzero = 1;
+
+	for (i = 0; (i < active_services) && (j < local_max_services); i++) {
+		VCHIQ_SERVICE_T *service_ptr = state->services[i];
+		if (!service_ptr)
+			continue;
+
+		if (only_nonzero && !service_ptr->service_use_count)
+			continue;
+
+		if (service_ptr->srvstate != VCHIQ_SRVSTATE_FREE) {
+			service_data[j].fourcc = service_ptr->base.fourcc;
+			service_data[j].clientid = service_ptr->client_id;
+			service_data[j++].use_count = service_ptr->
+							service_use_count;
+		}
+	}
+
+	read_unlock_bh(&arm_state->susp_res_lock);
+
+	vchiq_log_warning(vchiq_susp_log_level,
+		"-- Videcore suspend state: %s --",
+		suspend_state_names[vc_suspend_state + VC_SUSPEND_NUM_OFFSET]);
+	vchiq_log_warning(vchiq_susp_log_level,
+		"-- Videcore resume state: %s --",
+		resume_state_names[vc_resume_state + VC_RESUME_NUM_OFFSET]);
+
+	if (only_nonzero)
+		vchiq_log_warning(vchiq_susp_log_level, "Too many active "
+			"services (%d).  Only dumping up to first %d services "
+			"with non-zero use-count", active_services,
+			local_max_services);
+
+	for (i = 0; i < j; i++) {
+		vchiq_log_warning(vchiq_susp_log_level,
+			"----- %c%c%c%c:%d service count %d %s",
+			VCHIQ_FOURCC_AS_4CHARS(service_data[i].fourcc),
+			service_data[i].clientid,
+			service_data[i].use_count,
+			service_data[i].use_count ? nz : "");
+	}
+	vchiq_log_warning(vchiq_susp_log_level,
+		"----- VCHIQ use count count %d", peer_count);
+	vchiq_log_warning(vchiq_susp_log_level,
+		"--- Overall vchiq instance use count %d", vc_use_count);
+
+	vchiq_dump_platform_use_state(state);
+}
+
+VCHIQ_STATUS_T
+vchiq_check_service(VCHIQ_SERVICE_T *service)
+{
+	VCHIQ_ARM_STATE_T *arm_state;
+	VCHIQ_STATUS_T ret = VCHIQ_ERROR;
+
+	if (!service || !service->state)
+		goto out;
+
+	vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
+
+	arm_state = vchiq_platform_get_arm_state(service->state);
+
+	read_lock_bh(&arm_state->susp_res_lock);
+	if (service->service_use_count)
+		ret = VCHIQ_SUCCESS;
+	read_unlock_bh(&arm_state->susp_res_lock);
+
+	if (ret == VCHIQ_ERROR) {
+		vchiq_log_error(vchiq_susp_log_level,
+			"%s ERROR - %c%c%c%c:%d service count %d, "
+			"state count %d, videocore suspend state %s", __func__,
+			VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
+			service->client_id, service->service_use_count,
+			arm_state->videocore_use_count,
+			suspend_state_names[arm_state->vc_suspend_state +
+						VC_SUSPEND_NUM_OFFSET]);
+		vchiq_dump_service_use_state(service->state);
+	}
+out:
+	return ret;
+}
+
+/* stub functions */
+void vchiq_on_remote_use_active(VCHIQ_STATE_T *state)
+{
+	(void)state;
+}
+
+void vchiq_platform_conn_state_changed(VCHIQ_STATE_T *state,
+	VCHIQ_CONNSTATE_T oldstate, VCHIQ_CONNSTATE_T newstate)
+{
+	VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
+	vchiq_log_info(vchiq_susp_log_level, "%d: %s->%s", state->id,
+		get_conn_state_name(oldstate), get_conn_state_name(newstate));
+	if (state->conn_state == VCHIQ_CONNSTATE_CONNECTED) {
+		write_lock_bh(&arm_state->susp_res_lock);
+		if (!arm_state->first_connect) {
+			char threadname[10];
+			arm_state->first_connect = 1;
+			write_unlock_bh(&arm_state->susp_res_lock);
+			snprintf(threadname, sizeof(threadname), "VCHIQka-%d",
+				state->id);
+			arm_state->ka_thread = kthread_create(
+				&vchiq_keepalive_thread_func,
+				(void *)state,
+				threadname);
+			if (arm_state->ka_thread == NULL) {
+				vchiq_log_error(vchiq_susp_log_level,
+					"vchiq: FATAL: couldn't create thread %s",
+					threadname);
+			} else {
+				wake_up_process(arm_state->ka_thread);
+			}
+		} else
+			write_unlock_bh(&arm_state->susp_res_lock);
+	}
+}
+
+
+/****************************************************************************
+*
+*   vchiq_init - called when the module is loaded.
+*
+***************************************************************************/
+
+static int __init
+vchiq_init(void)
+{
+	int err;
+	void *ptr_err;
+
+	/* create debugfs entries */
+	err = vchiq_debugfs_init();
+	if (err != 0)
+		goto failed_debugfs_init;
+
+	err = alloc_chrdev_region(&vchiq_devid, VCHIQ_MINOR, 1, DEVICE_NAME);
+	if (err != 0) {
+		vchiq_log_error(vchiq_arm_log_level,
+			"Unable to allocate device number");
+		goto failed_alloc_chrdev;
+	}
+	cdev_init(&vchiq_cdev, &vchiq_fops);
+	vchiq_cdev.owner = THIS_MODULE;
+	err = cdev_add(&vchiq_cdev, vchiq_devid, 1);
+	if (err != 0) {
+		vchiq_log_error(vchiq_arm_log_level,
+			"Unable to register device");
+		goto failed_cdev_add;
+	}
+
+	/* create sysfs entries */
+	vchiq_class = class_create(THIS_MODULE, DEVICE_NAME);
+	ptr_err = vchiq_class;
+	if (IS_ERR(ptr_err))
+		goto failed_class_create;
+
+	vchiq_dev = device_create(vchiq_class, NULL,
+		vchiq_devid, NULL, "vchiq");
+	ptr_err = vchiq_dev;
+	if (IS_ERR(ptr_err))
+		goto failed_device_create;
+
+	err = vchiq_platform_init(&g_state);
+	if (err != 0)
+		goto failed_platform_init;
+
+	vchiq_log_info(vchiq_arm_log_level,
+		"vchiq: initialised - version %d (min %d), device %d.%d",
+		VCHIQ_VERSION, VCHIQ_VERSION_MIN,
+		MAJOR(vchiq_devid), MINOR(vchiq_devid));
+
+	return 0;
+
+failed_platform_init:
+	device_destroy(vchiq_class, vchiq_devid);
+failed_device_create:
+	class_destroy(vchiq_class);
+failed_class_create:
+	cdev_del(&vchiq_cdev);
+	err = PTR_ERR(ptr_err);
+failed_cdev_add:
+	unregister_chrdev_region(vchiq_devid, 1);
+failed_alloc_chrdev:
+	vchiq_debugfs_deinit();
+failed_debugfs_init:
+	vchiq_log_warning(vchiq_arm_log_level, "could not load vchiq");
+	return err;
+}
+
+/****************************************************************************
+*
+*   vchiq_exit - called when the module is unloaded.
+*
+***************************************************************************/
+
+static void __exit
+vchiq_exit(void)
+{
+	vchiq_platform_exit(&g_state);
+	device_destroy(vchiq_class, vchiq_devid);
+	class_destroy(vchiq_class);
+	cdev_del(&vchiq_cdev);
+	unregister_chrdev_region(vchiq_devid, 1);
+}
+
+module_init(vchiq_init);
+module_exit(vchiq_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Broadcom Corporation");
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,223 @@
+/**
+ * Copyright (c) 2014 Raspberry Pi (Trading) Ltd. All rights reserved.
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_ARM_H
+#define VCHIQ_ARM_H
+
+#include <linux/mutex.h>
+#include <linux/semaphore.h>
+#include <linux/atomic.h>
+#include "vchiq_core.h"
+#include "vchiq_debugfs.h"
+
+
+enum vc_suspend_status {
+	VC_SUSPEND_FORCE_CANCELED = -3, /* Force suspend canceled, too busy */
+	VC_SUSPEND_REJECTED = -2,  /* Videocore rejected suspend request */
+	VC_SUSPEND_FAILED = -1,    /* Videocore suspend failed */
+	VC_SUSPEND_IDLE = 0,       /* VC active, no suspend actions */
+	VC_SUSPEND_REQUESTED,      /* User has requested suspend */
+	VC_SUSPEND_IN_PROGRESS,    /* Slot handler has recvd suspend request */
+	VC_SUSPEND_SUSPENDED       /* Videocore suspend succeeded */
+};
+
+enum vc_resume_status {
+	VC_RESUME_FAILED = -1, /* Videocore resume failed */
+	VC_RESUME_IDLE = 0,    /* VC suspended, no resume actions */
+	VC_RESUME_REQUESTED,   /* User has requested resume */
+	VC_RESUME_IN_PROGRESS, /* Slot handler has received resume request */
+	VC_RESUME_RESUMED      /* Videocore resumed successfully (active) */
+};
+
+
+enum USE_TYPE_E {
+	USE_TYPE_SERVICE,
+	USE_TYPE_SERVICE_NO_RESUME,
+	USE_TYPE_VCHIQ
+};
+
+
+
+typedef struct vchiq_arm_state_struct {
+	/* Keepalive-related data */
+	struct task_struct *ka_thread;
+	struct completion ka_evt;
+	atomic_t ka_use_count;
+	atomic_t ka_use_ack_count;
+	atomic_t ka_release_count;
+
+	struct completion vc_suspend_complete;
+	struct completion vc_resume_complete;
+
+	rwlock_t susp_res_lock;
+	enum vc_suspend_status vc_suspend_state;
+	enum vc_resume_status vc_resume_state;
+
+	unsigned int wake_address;
+
+	struct timer_list suspend_timer;
+	int suspend_timer_timeout;
+	int suspend_timer_running;
+
+	/* Global use count for videocore.
+	** This is equal to the sum of the use counts for all services.  When
+	** this hits zero the videocore suspend procedure will be initiated.
+	*/
+	int videocore_use_count;
+
+	/* Use count to track requests from videocore peer.
+	** This use count is not associated with a service, so needs to be
+	** tracked separately with the state.
+	*/
+	int peer_use_count;
+
+	/* Flag to indicate whether resume is blocked.  This happens when the
+	** ARM is suspending
+	*/
+	struct completion resume_blocker;
+	int resume_blocked;
+	struct completion blocked_blocker;
+	int blocked_count;
+
+	int autosuspend_override;
+
+	/* Flag to indicate that the first vchiq connect has made it through.
+	** This means that both sides should be fully ready, and we should
+	** be able to suspend after this point.
+	*/
+	int first_connect;
+
+	unsigned long long suspend_start_time;
+	unsigned long long sleep_start_time;
+	unsigned long long resume_start_time;
+	unsigned long long last_wake_time;
+
+} VCHIQ_ARM_STATE_T;
+
+extern int vchiq_arm_log_level;
+extern int vchiq_susp_log_level;
+
+extern int __init
+vchiq_platform_init(VCHIQ_STATE_T *state);
+
+extern void __exit
+vchiq_platform_exit(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATE_T *
+vchiq_get_state(void);
+
+extern VCHIQ_STATUS_T
+vchiq_arm_vcsuspend(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_arm_force_suspend(VCHIQ_STATE_T *state);
+
+extern int
+vchiq_arm_allow_resume(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_arm_vcresume(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_arm_init_state(VCHIQ_STATE_T *state, VCHIQ_ARM_STATE_T *arm_state);
+
+extern int
+vchiq_check_resume(VCHIQ_STATE_T *state);
+
+extern void
+vchiq_check_suspend(VCHIQ_STATE_T *state);
+ VCHIQ_STATUS_T
+vchiq_use_service(VCHIQ_SERVICE_HANDLE_T handle);
+
+extern VCHIQ_STATUS_T
+vchiq_release_service(VCHIQ_SERVICE_HANDLE_T handle);
+
+extern VCHIQ_STATUS_T
+vchiq_check_service(VCHIQ_SERVICE_T *service);
+
+extern VCHIQ_STATUS_T
+vchiq_platform_suspend(VCHIQ_STATE_T *state);
+
+extern int
+vchiq_platform_videocore_wanted(VCHIQ_STATE_T *state);
+
+extern int
+vchiq_platform_use_suspend_timer(void);
+
+extern void
+vchiq_dump_platform_use_state(VCHIQ_STATE_T *state);
+
+extern void
+vchiq_dump_service_use_state(VCHIQ_STATE_T *state);
+
+extern VCHIQ_ARM_STATE_T*
+vchiq_platform_get_arm_state(VCHIQ_STATE_T *state);
+
+extern int
+vchiq_videocore_wanted(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_use_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
+		enum USE_TYPE_E use_type);
+extern VCHIQ_STATUS_T
+vchiq_release_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service);
+
+extern VCHIQ_DEBUGFS_NODE_T *
+vchiq_instance_get_debugfs_node(VCHIQ_INSTANCE_T instance);
+
+extern int
+vchiq_instance_get_use_count(VCHIQ_INSTANCE_T instance);
+
+extern int
+vchiq_instance_get_pid(VCHIQ_INSTANCE_T instance);
+
+extern int
+vchiq_instance_get_trace(VCHIQ_INSTANCE_T instance);
+
+extern void
+vchiq_instance_set_trace(VCHIQ_INSTANCE_T instance, int trace);
+
+extern void
+set_suspend_state(VCHIQ_ARM_STATE_T *arm_state,
+	enum vc_suspend_status new_state);
+
+extern void
+set_resume_state(VCHIQ_ARM_STATE_T *arm_state,
+	enum vc_resume_status new_state);
+
+extern void
+start_suspend_timer(VCHIQ_ARM_STATE_T *arm_state);
+
+
+#endif /* VCHIQ_ARM_H */
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_build_info.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_build_info.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_build_info.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_build_info.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+const char *vchiq_get_build_hostname(void);
+const char *vchiq_get_build_version(void);
+const char *vchiq_get_build_time(void);
+const char *vchiq_get_build_date(void);
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) 2010-2014 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_CFG_H
+#define VCHIQ_CFG_H
+
+#define VCHIQ_MAGIC              VCHIQ_MAKE_FOURCC('V', 'C', 'H', 'I')
+/* The version of VCHIQ - change with any non-trivial change */
+#define VCHIQ_VERSION            8
+/* The minimum compatible version - update to match VCHIQ_VERSION with any
+** incompatible change */
+#define VCHIQ_VERSION_MIN        3
+
+/* The version that introduced the VCHIQ_IOC_LIB_VERSION ioctl */
+#define VCHIQ_VERSION_LIB_VERSION 7
+
+/* The version that introduced the VCHIQ_IOC_CLOSE_DELIVERED ioctl */
+#define VCHIQ_VERSION_CLOSE_DELIVERED 7
+
+/* The version that made it safe to use SYNCHRONOUS mode */
+#define VCHIQ_VERSION_SYNCHRONOUS_MODE 8
+
+#define VCHIQ_MAX_STATES         1
+#define VCHIQ_MAX_SERVICES       4096
+#define VCHIQ_MAX_SLOTS          128
+#define VCHIQ_MAX_SLOTS_PER_SIDE 64
+
+#define VCHIQ_NUM_CURRENT_BULKS        32
+#define VCHIQ_NUM_SERVICE_BULKS        4
+
+#ifndef VCHIQ_ENABLE_DEBUG
+#define VCHIQ_ENABLE_DEBUG             1
+#endif
+
+#ifndef VCHIQ_ENABLE_STATS
+#define VCHIQ_ENABLE_STATS             1
+#endif
+
+#endif /* VCHIQ_CFG_H */
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,120 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "vchiq_connected.h"
+#include "vchiq_core.h"
+#include "vchiq_killable.h"
+#include <linux/module.h>
+#include <linux/mutex.h>
+
+#define  MAX_CALLBACKS  10
+
+static   int                        g_connected;
+static   int                        g_num_deferred_callbacks;
+static   VCHIQ_CONNECTED_CALLBACK_T g_deferred_callback[MAX_CALLBACKS];
+static   int                        g_once_init;
+static   struct mutex               g_connected_mutex;
+
+/****************************************************************************
+*
+* Function to initialize our lock.
+*
+***************************************************************************/
+
+static void connected_init(void)
+{
+	if (!g_once_init) {
+		mutex_init(&g_connected_mutex);
+		g_once_init = 1;
+	}
+}
+
+/****************************************************************************
+*
+* This function is used to defer initialization until the vchiq stack is
+* initialized. If the stack is already initialized, then the callback will
+* be made immediately, otherwise it will be deferred until
+* vchiq_call_connected_callbacks is called.
+*
+***************************************************************************/
+
+void vchiq_add_connected_callback(VCHIQ_CONNECTED_CALLBACK_T callback)
+{
+	connected_init();
+
+	if (mutex_lock_interruptible(&g_connected_mutex) != 0)
+		return;
+
+	if (g_connected)
+		/* We're already connected. Call the callback immediately. */
+
+		callback();
+	else {
+		if (g_num_deferred_callbacks >= MAX_CALLBACKS)
+			vchiq_log_error(vchiq_core_log_level,
+				"There already %d callback registered - "
+				"please increase MAX_CALLBACKS",
+				g_num_deferred_callbacks);
+		else {
+			g_deferred_callback[g_num_deferred_callbacks] =
+				callback;
+			g_num_deferred_callbacks++;
+		}
+	}
+	mutex_unlock(&g_connected_mutex);
+}
+
+/****************************************************************************
+*
+* This function is called by the vchiq stack once it has been connected to
+* the videocore and clients can start to use the stack.
+*
+***************************************************************************/
+
+void vchiq_call_connected_callbacks(void)
+{
+	int i;
+
+	connected_init();
+
+	if (mutex_lock_interruptible(&g_connected_mutex) != 0)
+		return;
+
+	for (i = 0; i <  g_num_deferred_callbacks; i++)
+		g_deferred_callback[i]();
+
+	g_num_deferred_callbacks = 0;
+	g_connected = 1;
+	mutex_unlock(&g_connected_mutex);
+}
+EXPORT_SYMBOL(vchiq_add_connected_callback);
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_CONNECTED_H
+#define VCHIQ_CONNECTED_H
+
+/* ---- Include Files ----------------------------------------------------- */
+
+/* ---- Constants and Types ---------------------------------------------- */
+
+typedef void (*VCHIQ_CONNECTED_CALLBACK_T)(void);
+
+/* ---- Variable Externs ------------------------------------------------- */
+
+/* ---- Function Prototypes ---------------------------------------------- */
+
+void vchiq_add_connected_callback(VCHIQ_CONNECTED_CALLBACK_T callback);
+void vchiq_call_connected_callbacks(void);
+
+#endif /* VCHIQ_CONNECTED_H */
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,3934 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "vchiq_core.h"
+#include "vchiq_killable.h"
+
+#define VCHIQ_SLOT_HANDLER_STACK 8192
+
+#define HANDLE_STATE_SHIFT 12
+
+#define SLOT_INFO_FROM_INDEX(state, index) (state->slot_info + (index))
+#define SLOT_DATA_FROM_INDEX(state, index) (state->slot_data + (index))
+#define SLOT_INDEX_FROM_DATA(state, data) \
+	(((unsigned int)((char *)data - (char *)state->slot_data)) / \
+	VCHIQ_SLOT_SIZE)
+#define SLOT_INDEX_FROM_INFO(state, info) \
+	((unsigned int)(info - state->slot_info))
+#define SLOT_QUEUE_INDEX_FROM_POS(pos) \
+	((int)((unsigned int)(pos) / VCHIQ_SLOT_SIZE))
+
+#define BULK_INDEX(x) (x & (VCHIQ_NUM_SERVICE_BULKS - 1))
+
+#define SRVTRACE_LEVEL(srv) \
+	(((srv) && (srv)->trace) ? VCHIQ_LOG_TRACE : vchiq_core_msg_log_level)
+#define SRVTRACE_ENABLED(srv, lev) \
+	(((srv) && (srv)->trace) || (vchiq_core_msg_log_level >= (lev)))
+
+struct vchiq_open_payload {
+	int fourcc;
+	int client_id;
+	short version;
+	short version_min;
+};
+
+struct vchiq_openack_payload {
+	short version;
+};
+
+enum
+{
+	QMFLAGS_IS_BLOCKING     = (1 << 0),
+	QMFLAGS_NO_MUTEX_LOCK   = (1 << 1),
+	QMFLAGS_NO_MUTEX_UNLOCK = (1 << 2)
+};
+
+/* we require this for consistency between endpoints */
+vchiq_static_assert(sizeof(VCHIQ_HEADER_T) == 8);
+vchiq_static_assert(IS_POW2(sizeof(VCHIQ_HEADER_T)));
+vchiq_static_assert(IS_POW2(VCHIQ_NUM_CURRENT_BULKS));
+vchiq_static_assert(IS_POW2(VCHIQ_NUM_SERVICE_BULKS));
+vchiq_static_assert(IS_POW2(VCHIQ_MAX_SERVICES));
+vchiq_static_assert(VCHIQ_VERSION >= VCHIQ_VERSION_MIN);
+
+/* Run time control of log level, based on KERN_XXX level. */
+int vchiq_core_log_level = VCHIQ_LOG_DEFAULT;
+int vchiq_core_msg_log_level = VCHIQ_LOG_DEFAULT;
+int vchiq_sync_log_level = VCHIQ_LOG_DEFAULT;
+
+static atomic_t pause_bulks_count = ATOMIC_INIT(0);
+
+static DEFINE_SPINLOCK(service_spinlock);
+DEFINE_SPINLOCK(bulk_waiter_spinlock);
+DEFINE_SPINLOCK(quota_spinlock);
+
+VCHIQ_STATE_T *vchiq_states[VCHIQ_MAX_STATES];
+static unsigned int handle_seq;
+
+static const char *const srvstate_names[] = {
+	"FREE",
+	"HIDDEN",
+	"LISTENING",
+	"OPENING",
+	"OPEN",
+	"OPENSYNC",
+	"CLOSESENT",
+	"CLOSERECVD",
+	"CLOSEWAIT",
+	"CLOSED"
+};
+
+static const char *const reason_names[] = {
+	"SERVICE_OPENED",
+	"SERVICE_CLOSED",
+	"MESSAGE_AVAILABLE",
+	"BULK_TRANSMIT_DONE",
+	"BULK_RECEIVE_DONE",
+	"BULK_TRANSMIT_ABORTED",
+	"BULK_RECEIVE_ABORTED"
+};
+
+static const char *const conn_state_names[] = {
+	"DISCONNECTED",
+	"CONNECTING",
+	"CONNECTED",
+	"PAUSING",
+	"PAUSE_SENT",
+	"PAUSED",
+	"RESUMING",
+	"PAUSE_TIMEOUT",
+	"RESUME_TIMEOUT"
+};
+
+
+static void
+release_message_sync(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header);
+
+static const char *msg_type_str(unsigned int msg_type)
+{
+	switch (msg_type) {
+	case VCHIQ_MSG_PADDING:       return "PADDING";
+	case VCHIQ_MSG_CONNECT:       return "CONNECT";
+	case VCHIQ_MSG_OPEN:          return "OPEN";
+	case VCHIQ_MSG_OPENACK:       return "OPENACK";
+	case VCHIQ_MSG_CLOSE:         return "CLOSE";
+	case VCHIQ_MSG_DATA:          return "DATA";
+	case VCHIQ_MSG_BULK_RX:       return "BULK_RX";
+	case VCHIQ_MSG_BULK_TX:       return "BULK_TX";
+	case VCHIQ_MSG_BULK_RX_DONE:  return "BULK_RX_DONE";
+	case VCHIQ_MSG_BULK_TX_DONE:  return "BULK_TX_DONE";
+	case VCHIQ_MSG_PAUSE:         return "PAUSE";
+	case VCHIQ_MSG_RESUME:        return "RESUME";
+	case VCHIQ_MSG_REMOTE_USE:    return "REMOTE_USE";
+	case VCHIQ_MSG_REMOTE_RELEASE:      return "REMOTE_RELEASE";
+	case VCHIQ_MSG_REMOTE_USE_ACTIVE:   return "REMOTE_USE_ACTIVE";
+	}
+	return "???";
+}
+
+static inline void
+vchiq_set_service_state(VCHIQ_SERVICE_T *service, int newstate)
+{
+	vchiq_log_info(vchiq_core_log_level, "%d: srv:%d %s->%s",
+		service->state->id, service->localport,
+		srvstate_names[service->srvstate],
+		srvstate_names[newstate]);
+	service->srvstate = newstate;
+}
+
+VCHIQ_SERVICE_T *
+find_service_by_handle(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	VCHIQ_SERVICE_T *service;
+
+	spin_lock(&service_spinlock);
+	service = handle_to_service(handle);
+	if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE) &&
+		(service->handle == handle)) {
+		BUG_ON(service->ref_count == 0);
+		service->ref_count++;
+	} else
+		service = NULL;
+	spin_unlock(&service_spinlock);
+
+	if (!service)
+		vchiq_log_info(vchiq_core_log_level,
+			"Invalid service handle 0x%x", handle);
+
+	return service;
+}
+
+VCHIQ_SERVICE_T *
+find_service_by_port(VCHIQ_STATE_T *state, int localport)
+{
+	VCHIQ_SERVICE_T *service = NULL;
+	if ((unsigned int)localport <= VCHIQ_PORT_MAX) {
+		spin_lock(&service_spinlock);
+		service = state->services[localport];
+		if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE)) {
+			BUG_ON(service->ref_count == 0);
+			service->ref_count++;
+		} else
+			service = NULL;
+		spin_unlock(&service_spinlock);
+	}
+
+	if (!service)
+		vchiq_log_info(vchiq_core_log_level,
+			"Invalid port %d", localport);
+
+	return service;
+}
+
+VCHIQ_SERVICE_T *
+find_service_for_instance(VCHIQ_INSTANCE_T instance,
+	VCHIQ_SERVICE_HANDLE_T handle) {
+	VCHIQ_SERVICE_T *service;
+
+	spin_lock(&service_spinlock);
+	service = handle_to_service(handle);
+	if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE) &&
+		(service->handle == handle) &&
+		(service->instance == instance)) {
+		BUG_ON(service->ref_count == 0);
+		service->ref_count++;
+	} else
+		service = NULL;
+	spin_unlock(&service_spinlock);
+
+	if (!service)
+		vchiq_log_info(vchiq_core_log_level,
+			"Invalid service handle 0x%x", handle);
+
+	return service;
+}
+
+VCHIQ_SERVICE_T *
+find_closed_service_for_instance(VCHIQ_INSTANCE_T instance,
+	VCHIQ_SERVICE_HANDLE_T handle) {
+	VCHIQ_SERVICE_T *service;
+
+	spin_lock(&service_spinlock);
+	service = handle_to_service(handle);
+	if (service &&
+		((service->srvstate == VCHIQ_SRVSTATE_FREE) ||
+		 (service->srvstate == VCHIQ_SRVSTATE_CLOSED)) &&
+		(service->handle == handle) &&
+		(service->instance == instance)) {
+		BUG_ON(service->ref_count == 0);
+		service->ref_count++;
+	} else
+		service = NULL;
+	spin_unlock(&service_spinlock);
+
+	if (!service)
+		vchiq_log_info(vchiq_core_log_level,
+			"Invalid service handle 0x%x", handle);
+
+	return service;
+}
+
+VCHIQ_SERVICE_T *
+next_service_by_instance(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance,
+	int *pidx)
+{
+	VCHIQ_SERVICE_T *service = NULL;
+	int idx = *pidx;
+
+	spin_lock(&service_spinlock);
+	while (idx < state->unused_service) {
+		VCHIQ_SERVICE_T *srv = state->services[idx++];
+		if (srv && (srv->srvstate != VCHIQ_SRVSTATE_FREE) &&
+			(srv->instance == instance)) {
+			service = srv;
+			BUG_ON(service->ref_count == 0);
+			service->ref_count++;
+			break;
+		}
+	}
+	spin_unlock(&service_spinlock);
+
+	*pidx = idx;
+
+	return service;
+}
+
+void
+lock_service(VCHIQ_SERVICE_T *service)
+{
+	spin_lock(&service_spinlock);
+	BUG_ON(!service || (service->ref_count == 0));
+	if (service)
+		service->ref_count++;
+	spin_unlock(&service_spinlock);
+}
+
+void
+unlock_service(VCHIQ_SERVICE_T *service)
+{
+	VCHIQ_STATE_T *state = service->state;
+	spin_lock(&service_spinlock);
+	BUG_ON(!service || (service->ref_count == 0));
+	if (service && service->ref_count) {
+		service->ref_count--;
+		if (!service->ref_count) {
+			BUG_ON(service->srvstate != VCHIQ_SRVSTATE_FREE);
+			state->services[service->localport] = NULL;
+		} else
+			service = NULL;
+	}
+	spin_unlock(&service_spinlock);
+
+	if (service && service->userdata_term)
+		service->userdata_term(service->base.userdata);
+
+	kfree(service);
+}
+
+int
+vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	int id;
+
+	id = service ? service->client_id : 0;
+	if (service)
+		unlock_service(service);
+
+	return id;
+}
+
+void *
+vchiq_get_service_userdata(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	VCHIQ_SERVICE_T *service = handle_to_service(handle);
+
+	return service ? service->base.userdata : NULL;
+}
+
+int
+vchiq_get_service_fourcc(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	VCHIQ_SERVICE_T *service = handle_to_service(handle);
+
+	return service ? service->base.fourcc : 0;
+}
+
+static void
+mark_service_closing_internal(VCHIQ_SERVICE_T *service, int sh_thread)
+{
+	VCHIQ_STATE_T *state = service->state;
+	VCHIQ_SERVICE_QUOTA_T *service_quota;
+
+	service->closing = 1;
+
+	/* Synchronise with other threads. */
+	mutex_lock(&state->recycle_mutex);
+	mutex_unlock(&state->recycle_mutex);
+	if (!sh_thread || (state->conn_state != VCHIQ_CONNSTATE_PAUSE_SENT)) {
+		/* If we're pausing then the slot_mutex is held until resume
+		 * by the slot handler.  Therefore don't try to acquire this
+		 * mutex if we're the slot handler and in the pause sent state.
+		 * We don't need to in this case anyway. */
+		mutex_lock(&state->slot_mutex);
+		mutex_unlock(&state->slot_mutex);
+	}
+
+	/* Unblock any sending thread. */
+	service_quota = &state->service_quotas[service->localport];
+	up(&service_quota->quota_event);
+}
+
+static void
+mark_service_closing(VCHIQ_SERVICE_T *service)
+{
+	mark_service_closing_internal(service, 0);
+}
+
+static inline VCHIQ_STATUS_T
+make_service_callback(VCHIQ_SERVICE_T *service, VCHIQ_REASON_T reason,
+	VCHIQ_HEADER_T *header, void *bulk_userdata)
+{
+	VCHIQ_STATUS_T status;
+	vchiq_log_trace(vchiq_core_log_level, "%d: callback:%d (%s, %x, %x)",
+		service->state->id, service->localport, reason_names[reason],
+		(unsigned int)header, (unsigned int)bulk_userdata);
+	status = service->base.callback(reason, header, service->handle,
+		bulk_userdata);
+	if (status == VCHIQ_ERROR) {
+		vchiq_log_warning(vchiq_core_log_level,
+			"%d: ignoring ERROR from callback to service %x",
+			service->state->id, service->handle);
+		status = VCHIQ_SUCCESS;
+	}
+	return status;
+}
+
+inline void
+vchiq_set_conn_state(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T newstate)
+{
+	VCHIQ_CONNSTATE_T oldstate = state->conn_state;
+	vchiq_log_info(vchiq_core_log_level, "%d: %s->%s", state->id,
+		conn_state_names[oldstate],
+		conn_state_names[newstate]);
+	state->conn_state = newstate;
+	vchiq_platform_conn_state_changed(state, oldstate, newstate);
+}
+
+static inline void
+remote_event_create(REMOTE_EVENT_T *event)
+{
+	event->armed = 0;
+	/* Don't clear the 'fired' flag because it may already have been set
+	** by the other side. */
+	sema_init(event->event, 0);
+}
+
+static inline void
+remote_event_destroy(REMOTE_EVENT_T *event)
+{
+	(void)event;
+}
+
+static inline int
+remote_event_wait(REMOTE_EVENT_T *event)
+{
+	if (!event->fired) {
+		event->armed = 1;
+		dsb();
+		if (!event->fired) {
+			if (down_interruptible(event->event) != 0) {
+				event->armed = 0;
+				return 0;
+			}
+		}
+		event->armed = 0;
+		wmb();
+	}
+
+	event->fired = 0;
+	return 1;
+}
+
+static inline void
+remote_event_signal_local(REMOTE_EVENT_T *event)
+{
+	event->armed = 0;
+	up(event->event);
+}
+
+static inline void
+remote_event_poll(REMOTE_EVENT_T *event)
+{
+	if (event->fired && event->armed)
+		remote_event_signal_local(event);
+}
+
+void
+remote_event_pollall(VCHIQ_STATE_T *state)
+{
+	remote_event_poll(&state->local->sync_trigger);
+	remote_event_poll(&state->local->sync_release);
+	remote_event_poll(&state->local->trigger);
+	remote_event_poll(&state->local->recycle);
+}
+
+/* Round up message sizes so that any space at the end of a slot is always big
+** enough for a header. This relies on header size being a power of two, which
+** has been verified earlier by a static assertion. */
+
+static inline unsigned int
+calc_stride(unsigned int size)
+{
+	/* Allow room for the header */
+	size += sizeof(VCHIQ_HEADER_T);
+
+	/* Round up */
+	return (size + sizeof(VCHIQ_HEADER_T) - 1) & ~(sizeof(VCHIQ_HEADER_T)
+		- 1);
+}
+
+/* Called by the slot handler thread */
+static VCHIQ_SERVICE_T *
+get_listening_service(VCHIQ_STATE_T *state, int fourcc)
+{
+	int i;
+
+	WARN_ON(fourcc == VCHIQ_FOURCC_INVALID);
+
+	for (i = 0; i < state->unused_service; i++) {
+		VCHIQ_SERVICE_T *service = state->services[i];
+		if (service &&
+			(service->public_fourcc == fourcc) &&
+			((service->srvstate == VCHIQ_SRVSTATE_LISTENING) ||
+			((service->srvstate == VCHIQ_SRVSTATE_OPEN) &&
+			(service->remoteport == VCHIQ_PORT_FREE)))) {
+			lock_service(service);
+			return service;
+		}
+	}
+
+	return NULL;
+}
+
+/* Called by the slot handler thread */
+static VCHIQ_SERVICE_T *
+get_connected_service(VCHIQ_STATE_T *state, unsigned int port)
+{
+	int i;
+	for (i = 0; i < state->unused_service; i++) {
+		VCHIQ_SERVICE_T *service = state->services[i];
+		if (service && (service->srvstate == VCHIQ_SRVSTATE_OPEN)
+			&& (service->remoteport == port)) {
+			lock_service(service);
+			return service;
+		}
+	}
+	return NULL;
+}
+
+inline void
+request_poll(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int poll_type)
+{
+	uint32_t value;
+
+	if (service) {
+		do {
+			value = atomic_read(&service->poll_flags);
+		} while (atomic_cmpxchg(&service->poll_flags, value,
+			value | (1 << poll_type)) != value);
+
+		do {
+			value = atomic_read(&state->poll_services[
+				service->localport>>5]);
+		} while (atomic_cmpxchg(
+			&state->poll_services[service->localport>>5],
+			value, value | (1 << (service->localport & 0x1f)))
+			!= value);
+	}
+
+	state->poll_needed = 1;
+	wmb();
+
+	/* ... and ensure the slot handler runs. */
+	remote_event_signal_local(&state->local->trigger);
+}
+
+/* Called from queue_message, by the slot handler and application threads,
+** with slot_mutex held */
+static VCHIQ_HEADER_T *
+reserve_space(VCHIQ_STATE_T *state, int space, int is_blocking)
+{
+	VCHIQ_SHARED_STATE_T *local = state->local;
+	int tx_pos = state->local_tx_pos;
+	int slot_space = VCHIQ_SLOT_SIZE - (tx_pos & VCHIQ_SLOT_MASK);
+
+	if (space > slot_space) {
+		VCHIQ_HEADER_T *header;
+		/* Fill the remaining space with padding */
+		WARN_ON(state->tx_data == NULL);
+		header = (VCHIQ_HEADER_T *)
+			(state->tx_data + (tx_pos & VCHIQ_SLOT_MASK));
+		header->msgid = VCHIQ_MSGID_PADDING;
+		header->size = slot_space - sizeof(VCHIQ_HEADER_T);
+
+		tx_pos += slot_space;
+	}
+
+	/* If necessary, get the next slot. */
+	if ((tx_pos & VCHIQ_SLOT_MASK) == 0) {
+		int slot_index;
+
+		/* If there is no free slot... */
+
+		if (down_trylock(&state->slot_available_event) != 0) {
+			/* ...wait for one. */
+
+			VCHIQ_STATS_INC(state, slot_stalls);
+
+			/* But first, flush through the last slot. */
+			state->local_tx_pos = tx_pos;
+			local->tx_pos = tx_pos;
+			remote_event_signal(&state->remote->trigger);
+
+			if (!is_blocking ||
+				(down_interruptible(
+				&state->slot_available_event) != 0))
+				return NULL; /* No space available */
+		}
+
+		BUG_ON(tx_pos ==
+			(state->slot_queue_available * VCHIQ_SLOT_SIZE));
+
+		slot_index = local->slot_queue[
+			SLOT_QUEUE_INDEX_FROM_POS(tx_pos) &
+			VCHIQ_SLOT_QUEUE_MASK];
+		state->tx_data =
+			(char *)SLOT_DATA_FROM_INDEX(state, slot_index);
+	}
+
+	state->local_tx_pos = tx_pos + space;
+
+	return (VCHIQ_HEADER_T *)(state->tx_data + (tx_pos & VCHIQ_SLOT_MASK));
+}
+
+/* Called by the recycle thread. */
+static void
+process_free_queue(VCHIQ_STATE_T *state)
+{
+	VCHIQ_SHARED_STATE_T *local = state->local;
+	BITSET_T service_found[BITSET_SIZE(VCHIQ_MAX_SERVICES)];
+	int slot_queue_available;
+
+	/* Use a read memory barrier to ensure that any state that may have
+	** been modified by another thread is not masked by stale prefetched
+	** values. */
+	rmb();
+
+	/* Find slots which have been freed by the other side, and return them
+	** to the available queue. */
+	slot_queue_available = state->slot_queue_available;
+
+	while (slot_queue_available != local->slot_queue_recycle) {
+		unsigned int pos;
+		int slot_index = local->slot_queue[slot_queue_available++ &
+			VCHIQ_SLOT_QUEUE_MASK];
+		char *data = (char *)SLOT_DATA_FROM_INDEX(state, slot_index);
+		int data_found = 0;
+
+		vchiq_log_trace(vchiq_core_log_level, "%d: pfq %d=%x %x %x",
+			state->id, slot_index, (unsigned int)data,
+			local->slot_queue_recycle, slot_queue_available);
+
+		/* Initialise the bitmask for services which have used this
+		** slot */
+		BITSET_ZERO(service_found);
+
+		pos = 0;
+
+		while (pos < VCHIQ_SLOT_SIZE) {
+			VCHIQ_HEADER_T *header =
+				(VCHIQ_HEADER_T *)(data + pos);
+			int msgid = header->msgid;
+			if (VCHIQ_MSG_TYPE(msgid) == VCHIQ_MSG_DATA) {
+				int port = VCHIQ_MSG_SRCPORT(msgid);
+				VCHIQ_SERVICE_QUOTA_T *service_quota =
+					&state->service_quotas[port];
+				int count;
+				spin_lock(&quota_spinlock);
+				count = service_quota->message_use_count;
+				if (count > 0)
+					service_quota->message_use_count =
+						count - 1;
+				spin_unlock(&quota_spinlock);
+
+				if (count == service_quota->message_quota)
+					/* Signal the service that it
+					** has dropped below its quota
+					*/
+					up(&service_quota->quota_event);
+				else if (count == 0) {
+					vchiq_log_error(vchiq_core_log_level,
+						"service %d "
+						"message_use_count=%d "
+						"(header %x, msgid %x, "
+						"header->msgid %x, "
+						"header->size %x)",
+						port,
+						service_quota->
+							message_use_count,
+						(unsigned int)header, msgid,
+						header->msgid,
+						header->size);
+					WARN(1, "invalid message use count\n");
+				}
+				if (!BITSET_IS_SET(service_found, port)) {
+					/* Set the found bit for this service */
+					BITSET_SET(service_found, port);
+
+					spin_lock(&quota_spinlock);
+					count = service_quota->slot_use_count;
+					if (count > 0)
+						service_quota->slot_use_count =
+							count - 1;
+					spin_unlock(&quota_spinlock);
+
+					if (count > 0) {
+						/* Signal the service in case
+						** it has dropped below its
+						** quota */
+						up(&service_quota->quota_event);
+						vchiq_log_trace(
+							vchiq_core_log_level,
+							"%d: pfq:%d %x@%x - "
+							"slot_use->%d",
+							state->id, port,
+							header->size,
+							(unsigned int)header,
+							count - 1);
+					} else {
+						vchiq_log_error(
+							vchiq_core_log_level,
+								"service %d "
+								"slot_use_count"
+								"=%d (header %x"
+								", msgid %x, "
+								"header->msgid"
+								" %x, header->"
+								"size %x)",
+							port, count,
+							(unsigned int)header,
+							msgid,
+							header->msgid,
+							header->size);
+						WARN(1, "bad slot use count\n");
+					}
+				}
+
+				data_found = 1;
+			}
+
+			pos += calc_stride(header->size);
+			if (pos > VCHIQ_SLOT_SIZE) {
+				vchiq_log_error(vchiq_core_log_level,
+					"pfq - pos %x: header %x, msgid %x, "
+					"header->msgid %x, header->size %x",
+					pos, (unsigned int)header, msgid,
+					header->msgid, header->size);
+				WARN(1, "invalid slot position\n");
+			}
+		}
+
+		if (data_found) {
+			int count;
+			spin_lock(&quota_spinlock);
+			count = state->data_use_count;
+			if (count > 0)
+				state->data_use_count =
+					count - 1;
+			spin_unlock(&quota_spinlock);
+			if (count == state->data_quota)
+				up(&state->data_quota_event);
+		}
+
+		state->slot_queue_available = slot_queue_available;
+		up(&state->slot_available_event);
+	}
+}
+
+/* Called by the slot handler and application threads */
+static VCHIQ_STATUS_T
+queue_message(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
+	int msgid, const VCHIQ_ELEMENT_T *elements,
+	int count, int size, int flags)
+{
+	VCHIQ_SHARED_STATE_T *local;
+	VCHIQ_SERVICE_QUOTA_T *service_quota = NULL;
+	VCHIQ_HEADER_T *header;
+	int type = VCHIQ_MSG_TYPE(msgid);
+
+	unsigned int stride;
+
+	local = state->local;
+
+	stride = calc_stride(size);
+
+	WARN_ON(!(stride <= VCHIQ_SLOT_SIZE));
+
+	if (!(flags & QMFLAGS_NO_MUTEX_LOCK) &&
+		(mutex_lock_interruptible(&state->slot_mutex) != 0))
+		return VCHIQ_RETRY;
+
+	if (type == VCHIQ_MSG_DATA) {
+		int tx_end_index;
+
+		BUG_ON(!service);
+		BUG_ON((flags & (QMFLAGS_NO_MUTEX_LOCK |
+				 QMFLAGS_NO_MUTEX_UNLOCK)) != 0);
+
+		if (service->closing) {
+			/* The service has been closed */
+			mutex_unlock(&state->slot_mutex);
+			return VCHIQ_ERROR;
+		}
+
+		service_quota = &state->service_quotas[service->localport];
+
+		spin_lock(&quota_spinlock);
+
+		/* Ensure this service doesn't use more than its quota of
+		** messages or slots */
+		tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(
+			state->local_tx_pos + stride - 1);
+
+		/* Ensure data messages don't use more than their quota of
+		** slots */
+		while ((tx_end_index != state->previous_data_index) &&
+			(state->data_use_count == state->data_quota)) {
+			VCHIQ_STATS_INC(state, data_stalls);
+			spin_unlock(&quota_spinlock);
+			mutex_unlock(&state->slot_mutex);
+
+			if (down_interruptible(&state->data_quota_event)
+				!= 0)
+				return VCHIQ_RETRY;
+
+			mutex_lock(&state->slot_mutex);
+			spin_lock(&quota_spinlock);
+			tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(
+				state->local_tx_pos + stride - 1);
+			if ((tx_end_index == state->previous_data_index) ||
+				(state->data_use_count < state->data_quota)) {
+				/* Pass the signal on to other waiters */
+				up(&state->data_quota_event);
+				break;
+			}
+		}
+
+		while ((service_quota->message_use_count ==
+				service_quota->message_quota) ||
+			((tx_end_index != service_quota->previous_tx_index) &&
+			(service_quota->slot_use_count ==
+				service_quota->slot_quota))) {
+			spin_unlock(&quota_spinlock);
+			vchiq_log_trace(vchiq_core_log_level,
+				"%d: qm:%d %s,%x - quota stall "
+				"(msg %d, slot %d)",
+				state->id, service->localport,
+				msg_type_str(type), size,
+				service_quota->message_use_count,
+				service_quota->slot_use_count);
+			VCHIQ_SERVICE_STATS_INC(service, quota_stalls);
+			mutex_unlock(&state->slot_mutex);
+			if (down_interruptible(&service_quota->quota_event)
+				!= 0)
+				return VCHIQ_RETRY;
+			if (service->closing)
+				return VCHIQ_ERROR;
+			if (mutex_lock_interruptible(&state->slot_mutex) != 0)
+				return VCHIQ_RETRY;
+			if (service->srvstate != VCHIQ_SRVSTATE_OPEN) {
+				/* The service has been closed */
+				mutex_unlock(&state->slot_mutex);
+				return VCHIQ_ERROR;
+			}
+			spin_lock(&quota_spinlock);
+			tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(
+				state->local_tx_pos + stride - 1);
+		}
+
+		spin_unlock(&quota_spinlock);
+	}
+
+	header = reserve_space(state, stride, flags & QMFLAGS_IS_BLOCKING);
+
+	if (!header) {
+		if (service)
+			VCHIQ_SERVICE_STATS_INC(service, slot_stalls);
+		/* In the event of a failure, return the mutex to the
+		   state it was in */
+		if (!(flags & QMFLAGS_NO_MUTEX_LOCK))
+			mutex_unlock(&state->slot_mutex);
+		return VCHIQ_RETRY;
+	}
+
+	if (type == VCHIQ_MSG_DATA) {
+		int i, pos;
+		int tx_end_index;
+		int slot_use_count;
+
+		vchiq_log_info(vchiq_core_log_level,
+			"%d: qm %s@%x,%x (%d->%d)",
+			state->id,
+			msg_type_str(VCHIQ_MSG_TYPE(msgid)),
+			(unsigned int)header, size,
+			VCHIQ_MSG_SRCPORT(msgid),
+			VCHIQ_MSG_DSTPORT(msgid));
+
+		BUG_ON(!service);
+		BUG_ON((flags & (QMFLAGS_NO_MUTEX_LOCK |
+				 QMFLAGS_NO_MUTEX_UNLOCK)) != 0);
+
+		for (i = 0, pos = 0; i < (unsigned int)count;
+			pos += elements[i++].size)
+			if (elements[i].size) {
+				if (vchiq_copy_from_user
+					(header->data + pos, elements[i].data,
+					(size_t) elements[i].size) !=
+					VCHIQ_SUCCESS) {
+					mutex_unlock(&state->slot_mutex);
+					VCHIQ_SERVICE_STATS_INC(service,
+						error_count);
+					return VCHIQ_ERROR;
+				}
+				if (i == 0) {
+					if (SRVTRACE_ENABLED(service,
+							VCHIQ_LOG_INFO))
+						vchiq_log_dump_mem("Sent", 0,
+							header->data + pos,
+							min(64u,
+							elements[0].size));
+				}
+			}
+
+		spin_lock(&quota_spinlock);
+		service_quota->message_use_count++;
+
+		tx_end_index =
+			SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos - 1);
+
+		/* If this transmission can't fit in the last slot used by any
+		** service, the data_use_count must be increased. */
+		if (tx_end_index != state->previous_data_index) {
+			state->previous_data_index = tx_end_index;
+			state->data_use_count++;
+		}
+
+		/* If this isn't the same slot last used by this service,
+		** the service's slot_use_count must be increased. */
+		if (tx_end_index != service_quota->previous_tx_index) {
+			service_quota->previous_tx_index = tx_end_index;
+			slot_use_count = ++service_quota->slot_use_count;
+		} else {
+			slot_use_count = 0;
+		}
+
+		spin_unlock(&quota_spinlock);
+
+		if (slot_use_count)
+			vchiq_log_trace(vchiq_core_log_level,
+				"%d: qm:%d %s,%x - slot_use->%d (hdr %p)",
+				state->id, service->localport,
+				msg_type_str(VCHIQ_MSG_TYPE(msgid)), size,
+				slot_use_count, header);
+
+		VCHIQ_SERVICE_STATS_INC(service, ctrl_tx_count);
+		VCHIQ_SERVICE_STATS_ADD(service, ctrl_tx_bytes, size);
+	} else {
+		vchiq_log_info(vchiq_core_log_level,
+			"%d: qm %s@%x,%x (%d->%d)", state->id,
+			msg_type_str(VCHIQ_MSG_TYPE(msgid)),
+			(unsigned int)header, size,
+			VCHIQ_MSG_SRCPORT(msgid),
+			VCHIQ_MSG_DSTPORT(msgid));
+		if (size != 0) {
+			WARN_ON(!((count == 1) && (size == elements[0].size)));
+			memcpy(header->data, elements[0].data,
+				elements[0].size);
+		}
+		VCHIQ_STATS_INC(state, ctrl_tx_count);
+	}
+
+	header->msgid = msgid;
+	header->size = size;
+
+	{
+		int svc_fourcc;
+
+		svc_fourcc = service
+			? service->base.fourcc
+			: VCHIQ_MAKE_FOURCC('?', '?', '?', '?');
+
+		vchiq_log_info(SRVTRACE_LEVEL(service),
+			"Sent Msg %s(%u) to %c%c%c%c s:%u d:%d len:%d",
+			msg_type_str(VCHIQ_MSG_TYPE(msgid)),
+			VCHIQ_MSG_TYPE(msgid),
+			VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
+			VCHIQ_MSG_SRCPORT(msgid),
+			VCHIQ_MSG_DSTPORT(msgid),
+			size);
+	}
+
+	/* Make sure the new header is visible to the peer. */
+	wmb();
+
+	/* Make the new tx_pos visible to the peer. */
+	local->tx_pos = state->local_tx_pos;
+	wmb();
+
+	if (service && (type == VCHIQ_MSG_CLOSE))
+		vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSESENT);
+
+	if (!(flags & QMFLAGS_NO_MUTEX_UNLOCK))
+		mutex_unlock(&state->slot_mutex);
+
+	remote_event_signal(&state->remote->trigger);
+
+	return VCHIQ_SUCCESS;
+}
+
+/* Called by the slot handler and application threads */
+static VCHIQ_STATUS_T
+queue_message_sync(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
+	int msgid, const VCHIQ_ELEMENT_T *elements,
+	int count, int size, int is_blocking)
+{
+	VCHIQ_SHARED_STATE_T *local;
+	VCHIQ_HEADER_T *header;
+
+	local = state->local;
+
+	if ((VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_RESUME) &&
+		(mutex_lock_interruptible(&state->sync_mutex) != 0))
+		return VCHIQ_RETRY;
+
+	remote_event_wait(&local->sync_release);
+
+	rmb();
+
+	header = (VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state,
+		local->slot_sync);
+
+	{
+		int oldmsgid = header->msgid;
+		if (oldmsgid != VCHIQ_MSGID_PADDING)
+			vchiq_log_error(vchiq_core_log_level,
+				"%d: qms - msgid %x, not PADDING",
+				state->id, oldmsgid);
+	}
+
+	if (service) {
+		int i, pos;
+
+		vchiq_log_info(vchiq_sync_log_level,
+			"%d: qms %s@%x,%x (%d->%d)", state->id,
+			msg_type_str(VCHIQ_MSG_TYPE(msgid)),
+			(unsigned int)header, size,
+			VCHIQ_MSG_SRCPORT(msgid),
+			VCHIQ_MSG_DSTPORT(msgid));
+
+		for (i = 0, pos = 0; i < (unsigned int)count;
+			pos += elements[i++].size)
+			if (elements[i].size) {
+				if (vchiq_copy_from_user
+					(header->data + pos, elements[i].data,
+					(size_t) elements[i].size) !=
+					VCHIQ_SUCCESS) {
+					mutex_unlock(&state->sync_mutex);
+					VCHIQ_SERVICE_STATS_INC(service,
+						error_count);
+					return VCHIQ_ERROR;
+				}
+				if (i == 0) {
+					if (vchiq_sync_log_level >=
+						VCHIQ_LOG_TRACE)
+						vchiq_log_dump_mem("Sent Sync",
+							0, header->data + pos,
+							min(64u,
+							elements[0].size));
+				}
+			}
+
+		VCHIQ_SERVICE_STATS_INC(service, ctrl_tx_count);
+		VCHIQ_SERVICE_STATS_ADD(service, ctrl_tx_bytes, size);
+	} else {
+		vchiq_log_info(vchiq_sync_log_level,
+			"%d: qms %s@%x,%x (%d->%d)", state->id,
+			msg_type_str(VCHIQ_MSG_TYPE(msgid)),
+			(unsigned int)header, size,
+			VCHIQ_MSG_SRCPORT(msgid),
+			VCHIQ_MSG_DSTPORT(msgid));
+		if (size != 0) {
+			WARN_ON(!((count == 1) && (size == elements[0].size)));
+			memcpy(header->data, elements[0].data,
+				elements[0].size);
+		}
+		VCHIQ_STATS_INC(state, ctrl_tx_count);
+	}
+
+	header->size = size;
+	header->msgid = msgid;
+
+	if (vchiq_sync_log_level >= VCHIQ_LOG_TRACE) {
+		int svc_fourcc;
+
+		svc_fourcc = service
+			? service->base.fourcc
+			: VCHIQ_MAKE_FOURCC('?', '?', '?', '?');
+
+		vchiq_log_trace(vchiq_sync_log_level,
+			"Sent Sync Msg %s(%u) to %c%c%c%c s:%u d:%d len:%d",
+			msg_type_str(VCHIQ_MSG_TYPE(msgid)),
+			VCHIQ_MSG_TYPE(msgid),
+			VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
+			VCHIQ_MSG_SRCPORT(msgid),
+			VCHIQ_MSG_DSTPORT(msgid),
+			size);
+	}
+
+	/* Make sure the new header is visible to the peer. */
+	wmb();
+
+	remote_event_signal(&state->remote->sync_trigger);
+
+	if (VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_PAUSE)
+		mutex_unlock(&state->sync_mutex);
+
+	return VCHIQ_SUCCESS;
+}
+
+static inline void
+claim_slot(VCHIQ_SLOT_INFO_T *slot)
+{
+	slot->use_count++;
+}
+
+static void
+release_slot(VCHIQ_STATE_T *state, VCHIQ_SLOT_INFO_T *slot_info,
+	VCHIQ_HEADER_T *header, VCHIQ_SERVICE_T *service)
+{
+	int release_count;
+
+	mutex_lock(&state->recycle_mutex);
+
+	if (header) {
+		int msgid = header->msgid;
+		if (((msgid & VCHIQ_MSGID_CLAIMED) == 0) ||
+			(service && service->closing)) {
+			mutex_unlock(&state->recycle_mutex);
+			return;
+		}
+
+		/* Rewrite the message header to prevent a double
+		** release */
+		header->msgid = msgid & ~VCHIQ_MSGID_CLAIMED;
+	}
+
+	release_count = slot_info->release_count;
+	slot_info->release_count = ++release_count;
+
+	if (release_count == slot_info->use_count) {
+		int slot_queue_recycle;
+		/* Add to the freed queue */
+
+		/* A read barrier is necessary here to prevent speculative
+		** fetches of remote->slot_queue_recycle from overtaking the
+		** mutex. */
+		rmb();
+
+		slot_queue_recycle = state->remote->slot_queue_recycle;
+		state->remote->slot_queue[slot_queue_recycle &
+			VCHIQ_SLOT_QUEUE_MASK] =
+			SLOT_INDEX_FROM_INFO(state, slot_info);
+		state->remote->slot_queue_recycle = slot_queue_recycle + 1;
+		vchiq_log_info(vchiq_core_log_level,
+			"%d: release_slot %d - recycle->%x",
+			state->id, SLOT_INDEX_FROM_INFO(state, slot_info),
+			state->remote->slot_queue_recycle);
+
+		/* A write barrier is necessary, but remote_event_signal
+		** contains one. */
+		remote_event_signal(&state->remote->recycle);
+	}
+
+	mutex_unlock(&state->recycle_mutex);
+}
+
+/* Called by the slot handler - don't hold the bulk mutex */
+static VCHIQ_STATUS_T
+notify_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue,
+	int retry_poll)
+{
+	VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+
+	vchiq_log_trace(vchiq_core_log_level,
+		"%d: nb:%d %cx - p=%x rn=%x r=%x",
+		service->state->id, service->localport,
+		(queue == &service->bulk_tx) ? 't' : 'r',
+		queue->process, queue->remote_notify, queue->remove);
+
+	if (service->state->is_master) {
+		while (queue->remote_notify != queue->process) {
+			VCHIQ_BULK_T *bulk =
+				&queue->bulks[BULK_INDEX(queue->remote_notify)];
+			int msgtype = (bulk->dir == VCHIQ_BULK_TRANSMIT) ?
+				VCHIQ_MSG_BULK_RX_DONE : VCHIQ_MSG_BULK_TX_DONE;
+			int msgid = VCHIQ_MAKE_MSG(msgtype, service->localport,
+				service->remoteport);
+			VCHIQ_ELEMENT_T element = { &bulk->actual, 4 };
+			/* Only reply to non-dummy bulk requests */
+			if (bulk->remote_data) {
+				status = queue_message(service->state, NULL,
+					msgid, &element, 1, 4, 0);
+				if (status != VCHIQ_SUCCESS)
+					break;
+			}
+			queue->remote_notify++;
+		}
+	} else {
+		queue->remote_notify = queue->process;
+	}
+
+	if (status == VCHIQ_SUCCESS) {
+		while (queue->remove != queue->remote_notify) {
+			VCHIQ_BULK_T *bulk =
+				&queue->bulks[BULK_INDEX(queue->remove)];
+
+			/* Only generate callbacks for non-dummy bulk
+			** requests, and non-terminated services */
+			if (bulk->data && service->instance) {
+				if (bulk->actual != VCHIQ_BULK_ACTUAL_ABORTED) {
+					if (bulk->dir == VCHIQ_BULK_TRANSMIT) {
+						VCHIQ_SERVICE_STATS_INC(service,
+							bulk_tx_count);
+						VCHIQ_SERVICE_STATS_ADD(service,
+							bulk_tx_bytes,
+							bulk->actual);
+					} else {
+						VCHIQ_SERVICE_STATS_INC(service,
+							bulk_rx_count);
+						VCHIQ_SERVICE_STATS_ADD(service,
+							bulk_rx_bytes,
+							bulk->actual);
+					}
+				} else {
+					VCHIQ_SERVICE_STATS_INC(service,
+						bulk_aborted_count);
+				}
+				if (bulk->mode == VCHIQ_BULK_MODE_BLOCKING) {
+					struct bulk_waiter *waiter;
+					spin_lock(&bulk_waiter_spinlock);
+					waiter = bulk->userdata;
+					if (waiter) {
+						waiter->actual = bulk->actual;
+						up(&waiter->event);
+					}
+					spin_unlock(&bulk_waiter_spinlock);
+				} else if (bulk->mode ==
+					VCHIQ_BULK_MODE_CALLBACK) {
+					VCHIQ_REASON_T reason = (bulk->dir ==
+						VCHIQ_BULK_TRANSMIT) ?
+						((bulk->actual ==
+						VCHIQ_BULK_ACTUAL_ABORTED) ?
+						VCHIQ_BULK_TRANSMIT_ABORTED :
+						VCHIQ_BULK_TRANSMIT_DONE) :
+						((bulk->actual ==
+						VCHIQ_BULK_ACTUAL_ABORTED) ?
+						VCHIQ_BULK_RECEIVE_ABORTED :
+						VCHIQ_BULK_RECEIVE_DONE);
+					status = make_service_callback(service,
+						reason,	NULL, bulk->userdata);
+					if (status == VCHIQ_RETRY)
+						break;
+				}
+			}
+
+			queue->remove++;
+			up(&service->bulk_remove_event);
+		}
+		if (!retry_poll)
+			status = VCHIQ_SUCCESS;
+	}
+
+	if (status == VCHIQ_RETRY)
+		request_poll(service->state, service,
+			(queue == &service->bulk_tx) ?
+			VCHIQ_POLL_TXNOTIFY : VCHIQ_POLL_RXNOTIFY);
+
+	return status;
+}
+
+/* Called by the slot handler thread */
+static void
+poll_services(VCHIQ_STATE_T *state)
+{
+	int group, i;
+
+	for (group = 0; group < BITSET_SIZE(state->unused_service); group++) {
+		uint32_t flags;
+		flags = atomic_xchg(&state->poll_services[group], 0);
+		for (i = 0; flags; i++) {
+			if (flags & (1 << i)) {
+				VCHIQ_SERVICE_T *service =
+					find_service_by_port(state,
+						(group<<5) + i);
+				uint32_t service_flags;
+				flags &= ~(1 << i);
+				if (!service)
+					continue;
+				service_flags =
+					atomic_xchg(&service->poll_flags, 0);
+				if (service_flags &
+					(1 << VCHIQ_POLL_REMOVE)) {
+					vchiq_log_info(vchiq_core_log_level,
+						"%d: ps - remove %d<->%d",
+						state->id, service->localport,
+						service->remoteport);
+
+					/* Make it look like a client, because
+					   it must be removed and not left in
+					   the LISTENING state. */
+					service->public_fourcc =
+						VCHIQ_FOURCC_INVALID;
+
+					if (vchiq_close_service_internal(
+						service, 0/*!close_recvd*/) !=
+						VCHIQ_SUCCESS)
+						request_poll(state, service,
+							VCHIQ_POLL_REMOVE);
+				} else if (service_flags &
+					(1 << VCHIQ_POLL_TERMINATE)) {
+					vchiq_log_info(vchiq_core_log_level,
+						"%d: ps - terminate %d<->%d",
+						state->id, service->localport,
+						service->remoteport);
+					if (vchiq_close_service_internal(
+						service, 0/*!close_recvd*/) !=
+						VCHIQ_SUCCESS)
+						request_poll(state, service,
+							VCHIQ_POLL_TERMINATE);
+				}
+				if (service_flags & (1 << VCHIQ_POLL_TXNOTIFY))
+					notify_bulks(service,
+						&service->bulk_tx,
+						1/*retry_poll*/);
+				if (service_flags & (1 << VCHIQ_POLL_RXNOTIFY))
+					notify_bulks(service,
+						&service->bulk_rx,
+						1/*retry_poll*/);
+				unlock_service(service);
+			}
+		}
+	}
+}
+
+/* Called by the slot handler or application threads, holding the bulk mutex. */
+static int
+resolve_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue)
+{
+	VCHIQ_STATE_T *state = service->state;
+	int resolved = 0;
+	int rc;
+
+	while ((queue->process != queue->local_insert) &&
+		(queue->process != queue->remote_insert)) {
+		VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->process)];
+
+		vchiq_log_trace(vchiq_core_log_level,
+			"%d: rb:%d %cx - li=%x ri=%x p=%x",
+			state->id, service->localport,
+			(queue == &service->bulk_tx) ? 't' : 'r',
+			queue->local_insert, queue->remote_insert,
+			queue->process);
+
+		WARN_ON(!((int)(queue->local_insert - queue->process) > 0));
+		WARN_ON(!((int)(queue->remote_insert - queue->process) > 0));
+
+		rc = mutex_lock_interruptible(&state->bulk_transfer_mutex);
+		if (rc != 0)
+			break;
+
+		vchiq_transfer_bulk(bulk);
+		mutex_unlock(&state->bulk_transfer_mutex);
+
+		if (SRVTRACE_ENABLED(service, VCHIQ_LOG_INFO)) {
+			const char *header = (queue == &service->bulk_tx) ?
+				"Send Bulk to" : "Recv Bulk from";
+			if (bulk->actual != VCHIQ_BULK_ACTUAL_ABORTED)
+				vchiq_log_info(SRVTRACE_LEVEL(service),
+					"%s %c%c%c%c d:%d len:%d %x<->%x",
+					header,
+					VCHIQ_FOURCC_AS_4CHARS(
+						service->base.fourcc),
+					service->remoteport,
+					bulk->size,
+					(unsigned int)bulk->data,
+					(unsigned int)bulk->remote_data);
+			else
+				vchiq_log_info(SRVTRACE_LEVEL(service),
+					"%s %c%c%c%c d:%d ABORTED - tx len:%d,"
+					" rx len:%d %x<->%x",
+					header,
+					VCHIQ_FOURCC_AS_4CHARS(
+						service->base.fourcc),
+					service->remoteport,
+					bulk->size,
+					bulk->remote_size,
+					(unsigned int)bulk->data,
+					(unsigned int)bulk->remote_data);
+		}
+
+		vchiq_complete_bulk(bulk);
+		queue->process++;
+		resolved++;
+	}
+	return resolved;
+}
+
+/* Called with the bulk_mutex held */
+static void
+abort_outstanding_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue)
+{
+	int is_tx = (queue == &service->bulk_tx);
+	vchiq_log_trace(vchiq_core_log_level,
+		"%d: aob:%d %cx - li=%x ri=%x p=%x",
+		service->state->id, service->localport, is_tx ? 't' : 'r',
+		queue->local_insert, queue->remote_insert, queue->process);
+
+	WARN_ON(!((int)(queue->local_insert - queue->process) >= 0));
+	WARN_ON(!((int)(queue->remote_insert - queue->process) >= 0));
+
+	while ((queue->process != queue->local_insert) ||
+		(queue->process != queue->remote_insert)) {
+		VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->process)];
+
+		if (queue->process == queue->remote_insert) {
+			/* fabricate a matching dummy bulk */
+			bulk->remote_data = NULL;
+			bulk->remote_size = 0;
+			queue->remote_insert++;
+		}
+
+		if (queue->process != queue->local_insert) {
+			vchiq_complete_bulk(bulk);
+
+			vchiq_log_info(SRVTRACE_LEVEL(service),
+				"%s %c%c%c%c d:%d ABORTED - tx len:%d, "
+				"rx len:%d",
+				is_tx ? "Send Bulk to" : "Recv Bulk from",
+				VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
+				service->remoteport,
+				bulk->size,
+				bulk->remote_size);
+		} else {
+			/* fabricate a matching dummy bulk */
+			bulk->data = NULL;
+			bulk->size = 0;
+			bulk->actual = VCHIQ_BULK_ACTUAL_ABORTED;
+			bulk->dir = is_tx ? VCHIQ_BULK_TRANSMIT :
+				VCHIQ_BULK_RECEIVE;
+			queue->local_insert++;
+		}
+
+		queue->process++;
+	}
+}
+
+/* Called from the slot handler thread */
+static void
+pause_bulks(VCHIQ_STATE_T *state)
+{
+	if (unlikely(atomic_inc_return(&pause_bulks_count) != 1)) {
+		WARN_ON_ONCE(1);
+		atomic_set(&pause_bulks_count, 1);
+		return;
+	}
+
+	/* Block bulk transfers from all services */
+	mutex_lock(&state->bulk_transfer_mutex);
+}
+
+/* Called from the slot handler thread */
+static void
+resume_bulks(VCHIQ_STATE_T *state)
+{
+	int i;
+	if (unlikely(atomic_dec_return(&pause_bulks_count) != 0)) {
+		WARN_ON_ONCE(1);
+		atomic_set(&pause_bulks_count, 0);
+		return;
+	}
+
+	/* Allow bulk transfers from all services */
+	mutex_unlock(&state->bulk_transfer_mutex);
+
+	if (state->deferred_bulks == 0)
+		return;
+
+	/* Deal with any bulks which had to be deferred due to being in
+	 * paused state.  Don't try to match up to number of deferred bulks
+	 * in case we've had something come and close the service in the
+	 * interim - just process all bulk queues for all services */
+	vchiq_log_info(vchiq_core_log_level, "%s: processing %d deferred bulks",
+		__func__, state->deferred_bulks);
+
+	for (i = 0; i < state->unused_service; i++) {
+		VCHIQ_SERVICE_T *service = state->services[i];
+		int resolved_rx = 0;
+		int resolved_tx = 0;
+		if (!service || (service->srvstate != VCHIQ_SRVSTATE_OPEN))
+			continue;
+
+		mutex_lock(&service->bulk_mutex);
+		resolved_rx = resolve_bulks(service, &service->bulk_rx);
+		resolved_tx = resolve_bulks(service, &service->bulk_tx);
+		mutex_unlock(&service->bulk_mutex);
+		if (resolved_rx)
+			notify_bulks(service, &service->bulk_rx, 1);
+		if (resolved_tx)
+			notify_bulks(service, &service->bulk_tx, 1);
+	}
+	state->deferred_bulks = 0;
+}
+
+static int
+parse_open(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header)
+{
+	VCHIQ_SERVICE_T *service = NULL;
+	int msgid, size;
+	int type;
+	unsigned int localport, remoteport;
+
+	msgid = header->msgid;
+	size = header->size;
+	type = VCHIQ_MSG_TYPE(msgid);
+	localport = VCHIQ_MSG_DSTPORT(msgid);
+	remoteport = VCHIQ_MSG_SRCPORT(msgid);
+	if (size >= sizeof(struct vchiq_open_payload)) {
+		const struct vchiq_open_payload *payload =
+			(struct vchiq_open_payload *)header->data;
+		unsigned int fourcc;
+
+		fourcc = payload->fourcc;
+		vchiq_log_info(vchiq_core_log_level,
+			"%d: prs OPEN@%x (%d->'%c%c%c%c')",
+			state->id, (unsigned int)header,
+			localport,
+			VCHIQ_FOURCC_AS_4CHARS(fourcc));
+
+		service = get_listening_service(state, fourcc);
+
+		if (service) {
+			/* A matching service exists */
+			short version = payload->version;
+			short version_min = payload->version_min;
+			if ((service->version < version_min) ||
+				(version < service->version_min)) {
+				/* Version mismatch */
+				vchiq_loud_error_header();
+				vchiq_loud_error("%d: service %d (%c%c%c%c) "
+					"version mismatch - local (%d, min %d)"
+					" vs. remote (%d, min %d)",
+					state->id, service->localport,
+					VCHIQ_FOURCC_AS_4CHARS(fourcc),
+					service->version, service->version_min,
+					version, version_min);
+				vchiq_loud_error_footer();
+				unlock_service(service);
+				service = NULL;
+				goto fail_open;
+			}
+			service->peer_version = version;
+
+			if (service->srvstate == VCHIQ_SRVSTATE_LISTENING) {
+				struct vchiq_openack_payload ack_payload = {
+					service->version
+				};
+				VCHIQ_ELEMENT_T body = {
+					&ack_payload,
+					sizeof(ack_payload)
+				};
+
+				if (state->version_common <
+				    VCHIQ_VERSION_SYNCHRONOUS_MODE)
+					service->sync = 0;
+
+				/* Acknowledge the OPEN */
+				if (service->sync &&
+				    (state->version_common >=
+				     VCHIQ_VERSION_SYNCHRONOUS_MODE)) {
+					if (queue_message_sync(state, NULL,
+						VCHIQ_MAKE_MSG(
+							VCHIQ_MSG_OPENACK,
+							service->localport,
+							remoteport),
+						&body, 1, sizeof(ack_payload),
+						0) == VCHIQ_RETRY)
+						goto bail_not_ready;
+				} else {
+					if (queue_message(state, NULL,
+						VCHIQ_MAKE_MSG(
+							VCHIQ_MSG_OPENACK,
+							service->localport,
+							remoteport),
+						&body, 1, sizeof(ack_payload),
+						0) == VCHIQ_RETRY)
+						goto bail_not_ready;
+				}
+
+				/* The service is now open */
+				vchiq_set_service_state(service,
+					service->sync ? VCHIQ_SRVSTATE_OPENSYNC
+					: VCHIQ_SRVSTATE_OPEN);
+			}
+
+			service->remoteport = remoteport;
+			service->client_id = ((int *)header->data)[1];
+			if (make_service_callback(service, VCHIQ_SERVICE_OPENED,
+				NULL, NULL) == VCHIQ_RETRY) {
+				/* Bail out if not ready */
+				service->remoteport = VCHIQ_PORT_FREE;
+				goto bail_not_ready;
+			}
+
+			/* Success - the message has been dealt with */
+			unlock_service(service);
+			return 1;
+		}
+	}
+
+fail_open:
+	/* No available service, or an invalid request - send a CLOSE */
+	if (queue_message(state, NULL,
+		VCHIQ_MAKE_MSG(VCHIQ_MSG_CLOSE, 0, VCHIQ_MSG_SRCPORT(msgid)),
+		NULL, 0, 0, 0) == VCHIQ_RETRY)
+		goto bail_not_ready;
+
+	return 1;
+
+bail_not_ready:
+	if (service)
+		unlock_service(service);
+
+	return 0;
+}
+
+/* Called by the slot handler thread */
+static void
+parse_rx_slots(VCHIQ_STATE_T *state)
+{
+	VCHIQ_SHARED_STATE_T *remote = state->remote;
+	VCHIQ_SERVICE_T *service = NULL;
+	int tx_pos;
+	DEBUG_INITIALISE(state->local)
+
+	tx_pos = remote->tx_pos;
+
+	while (state->rx_pos != tx_pos) {
+		VCHIQ_HEADER_T *header;
+		int msgid, size;
+		int type;
+		unsigned int localport, remoteport;
+
+		DEBUG_TRACE(PARSE_LINE);
+		if (!state->rx_data) {
+			int rx_index;
+			WARN_ON(!((state->rx_pos & VCHIQ_SLOT_MASK) == 0));
+			rx_index = remote->slot_queue[
+				SLOT_QUEUE_INDEX_FROM_POS(state->rx_pos) &
+				VCHIQ_SLOT_QUEUE_MASK];
+			state->rx_data = (char *)SLOT_DATA_FROM_INDEX(state,
+				rx_index);
+			state->rx_info = SLOT_INFO_FROM_INDEX(state, rx_index);
+
+			/* Initialise use_count to one, and increment
+			** release_count at the end of the slot to avoid
+			** releasing the slot prematurely. */
+			state->rx_info->use_count = 1;
+			state->rx_info->release_count = 0;
+		}
+
+		header = (VCHIQ_HEADER_T *)(state->rx_data +
+			(state->rx_pos & VCHIQ_SLOT_MASK));
+		DEBUG_VALUE(PARSE_HEADER, (int)header);
+		msgid = header->msgid;
+		DEBUG_VALUE(PARSE_MSGID, msgid);
+		size = header->size;
+		type = VCHIQ_MSG_TYPE(msgid);
+		localport = VCHIQ_MSG_DSTPORT(msgid);
+		remoteport = VCHIQ_MSG_SRCPORT(msgid);
+
+		if (type != VCHIQ_MSG_DATA)
+			VCHIQ_STATS_INC(state, ctrl_rx_count);
+
+		switch (type) {
+		case VCHIQ_MSG_OPENACK:
+		case VCHIQ_MSG_CLOSE:
+		case VCHIQ_MSG_DATA:
+		case VCHIQ_MSG_BULK_RX:
+		case VCHIQ_MSG_BULK_TX:
+		case VCHIQ_MSG_BULK_RX_DONE:
+		case VCHIQ_MSG_BULK_TX_DONE:
+			service = find_service_by_port(state, localport);
+			if ((!service ||
+			     ((service->remoteport != remoteport) &&
+			      (service->remoteport != VCHIQ_PORT_FREE))) &&
+			    (localport == 0) &&
+			    (type == VCHIQ_MSG_CLOSE)) {
+				/* This could be a CLOSE from a client which
+				   hadn't yet received the OPENACK - look for
+				   the connected service */
+				if (service)
+					unlock_service(service);
+				service = get_connected_service(state,
+					remoteport);
+				if (service)
+					vchiq_log_warning(vchiq_core_log_level,
+						"%d: prs %s@%x (%d->%d) - "
+						"found connected service %d",
+						state->id, msg_type_str(type),
+						(unsigned int)header,
+						remoteport, localport,
+						service->localport);
+			}
+
+			if (!service) {
+				vchiq_log_error(vchiq_core_log_level,
+					"%d: prs %s@%x (%d->%d) - "
+					"invalid/closed service %d",
+					state->id, msg_type_str(type),
+					(unsigned int)header,
+					remoteport, localport, localport);
+				goto skip_message;
+			}
+			break;
+		default:
+			break;
+		}
+
+		if (SRVTRACE_ENABLED(service, VCHIQ_LOG_INFO)) {
+			int svc_fourcc;
+
+			svc_fourcc = service
+				? service->base.fourcc
+				: VCHIQ_MAKE_FOURCC('?', '?', '?', '?');
+			vchiq_log_info(SRVTRACE_LEVEL(service),
+				"Rcvd Msg %s(%u) from %c%c%c%c s:%d d:%d "
+				"len:%d",
+				msg_type_str(type), type,
+				VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
+				remoteport, localport, size);
+			if (size > 0)
+				vchiq_log_dump_mem("Rcvd", 0, header->data,
+					min(64, size));
+		}
+
+		if (((unsigned int)header & VCHIQ_SLOT_MASK) + calc_stride(size)
+			> VCHIQ_SLOT_SIZE) {
+			vchiq_log_error(vchiq_core_log_level,
+				"header %x (msgid %x) - size %x too big for "
+				"slot",
+				(unsigned int)header, (unsigned int)msgid,
+				(unsigned int)size);
+			WARN(1, "oversized for slot\n");
+		}
+
+		switch (type) {
+		case VCHIQ_MSG_OPEN:
+			WARN_ON(!(VCHIQ_MSG_DSTPORT(msgid) == 0));
+			if (!parse_open(state, header))
+				goto bail_not_ready;
+			break;
+		case VCHIQ_MSG_OPENACK:
+			if (size >= sizeof(struct vchiq_openack_payload)) {
+				const struct vchiq_openack_payload *payload =
+					(struct vchiq_openack_payload *)
+					header->data;
+				service->peer_version = payload->version;
+			}
+			vchiq_log_info(vchiq_core_log_level,
+				"%d: prs OPENACK@%x,%x (%d->%d) v:%d",
+				state->id, (unsigned int)header, size,
+				remoteport, localport, service->peer_version);
+			if (service->srvstate ==
+				VCHIQ_SRVSTATE_OPENING) {
+				service->remoteport = remoteport;
+				vchiq_set_service_state(service,
+					VCHIQ_SRVSTATE_OPEN);
+				up(&service->remove_event);
+			} else
+				vchiq_log_error(vchiq_core_log_level,
+					"OPENACK received in state %s",
+					srvstate_names[service->srvstate]);
+			break;
+		case VCHIQ_MSG_CLOSE:
+			WARN_ON(size != 0); /* There should be no data */
+
+			vchiq_log_info(vchiq_core_log_level,
+				"%d: prs CLOSE@%x (%d->%d)",
+				state->id, (unsigned int)header,
+				remoteport, localport);
+
+			mark_service_closing_internal(service, 1);
+
+			if (vchiq_close_service_internal(service,
+				1/*close_recvd*/) == VCHIQ_RETRY)
+				goto bail_not_ready;
+
+			vchiq_log_info(vchiq_core_log_level,
+				"Close Service %c%c%c%c s:%u d:%d",
+				VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
+				service->localport,
+				service->remoteport);
+			break;
+		case VCHIQ_MSG_DATA:
+			vchiq_log_trace(vchiq_core_log_level,
+				"%d: prs DATA@%x,%x (%d->%d)",
+				state->id, (unsigned int)header, size,
+				remoteport, localport);
+
+			if ((service->remoteport == remoteport)
+				&& (service->srvstate ==
+				VCHIQ_SRVSTATE_OPEN)) {
+				header->msgid = msgid | VCHIQ_MSGID_CLAIMED;
+				claim_slot(state->rx_info);
+				DEBUG_TRACE(PARSE_LINE);
+				if (make_service_callback(service,
+					VCHIQ_MESSAGE_AVAILABLE, header,
+					NULL) == VCHIQ_RETRY) {
+					DEBUG_TRACE(PARSE_LINE);
+					goto bail_not_ready;
+				}
+				VCHIQ_SERVICE_STATS_INC(service, ctrl_rx_count);
+				VCHIQ_SERVICE_STATS_ADD(service, ctrl_rx_bytes,
+					size);
+			} else {
+				VCHIQ_STATS_INC(state, error_count);
+			}
+			break;
+		case VCHIQ_MSG_CONNECT:
+			vchiq_log_info(vchiq_core_log_level,
+				"%d: prs CONNECT@%x",
+				state->id, (unsigned int)header);
+			state->version_common = ((VCHIQ_SLOT_ZERO_T *)
+						 state->slot_data)->version;
+			up(&state->connect);
+			break;
+		case VCHIQ_MSG_BULK_RX:
+		case VCHIQ_MSG_BULK_TX: {
+			VCHIQ_BULK_QUEUE_T *queue;
+			WARN_ON(!state->is_master);
+			queue = (type == VCHIQ_MSG_BULK_RX) ?
+				&service->bulk_tx : &service->bulk_rx;
+			if ((service->remoteport == remoteport)
+				&& (service->srvstate ==
+				VCHIQ_SRVSTATE_OPEN)) {
+				VCHIQ_BULK_T *bulk;
+				int resolved = 0;
+
+				DEBUG_TRACE(PARSE_LINE);
+				if (mutex_lock_interruptible(
+					&service->bulk_mutex) != 0) {
+					DEBUG_TRACE(PARSE_LINE);
+					goto bail_not_ready;
+				}
+
+				WARN_ON(!(queue->remote_insert < queue->remove +
+					VCHIQ_NUM_SERVICE_BULKS));
+				bulk = &queue->bulks[
+					BULK_INDEX(queue->remote_insert)];
+				bulk->remote_data =
+					(void *)((int *)header->data)[0];
+				bulk->remote_size = ((int *)header->data)[1];
+				wmb();
+
+				vchiq_log_info(vchiq_core_log_level,
+					"%d: prs %s@%x (%d->%d) %x@%x",
+					state->id, msg_type_str(type),
+					(unsigned int)header,
+					remoteport, localport,
+					bulk->remote_size,
+					(unsigned int)bulk->remote_data);
+
+				queue->remote_insert++;
+
+				if (atomic_read(&pause_bulks_count)) {
+					state->deferred_bulks++;
+					vchiq_log_info(vchiq_core_log_level,
+						"%s: deferring bulk (%d)",
+						__func__,
+						state->deferred_bulks);
+					if (state->conn_state !=
+						VCHIQ_CONNSTATE_PAUSE_SENT)
+						vchiq_log_error(
+							vchiq_core_log_level,
+							"%s: bulks paused in "
+							"unexpected state %s",
+							__func__,
+							conn_state_names[
+							state->conn_state]);
+				} else if (state->conn_state ==
+					VCHIQ_CONNSTATE_CONNECTED) {
+					DEBUG_TRACE(PARSE_LINE);
+					resolved = resolve_bulks(service,
+						queue);
+				}
+
+				mutex_unlock(&service->bulk_mutex);
+				if (resolved)
+					notify_bulks(service, queue,
+						1/*retry_poll*/);
+			}
+		} break;
+		case VCHIQ_MSG_BULK_RX_DONE:
+		case VCHIQ_MSG_BULK_TX_DONE:
+			WARN_ON(state->is_master);
+			if ((service->remoteport == remoteport)
+				&& (service->srvstate !=
+				VCHIQ_SRVSTATE_FREE)) {
+				VCHIQ_BULK_QUEUE_T *queue;
+				VCHIQ_BULK_T *bulk;
+
+				queue = (type == VCHIQ_MSG_BULK_RX_DONE) ?
+					&service->bulk_rx : &service->bulk_tx;
+
+				DEBUG_TRACE(PARSE_LINE);
+				if (mutex_lock_interruptible(
+					&service->bulk_mutex) != 0) {
+					DEBUG_TRACE(PARSE_LINE);
+					goto bail_not_ready;
+				}
+				if ((int)(queue->remote_insert -
+					queue->local_insert) >= 0) {
+					vchiq_log_error(vchiq_core_log_level,
+						"%d: prs %s@%x (%d->%d) "
+						"unexpected (ri=%d,li=%d)",
+						state->id, msg_type_str(type),
+						(unsigned int)header,
+						remoteport, localport,
+						queue->remote_insert,
+						queue->local_insert);
+					mutex_unlock(&service->bulk_mutex);
+					break;
+				}
+
+				BUG_ON(queue->process == queue->local_insert);
+				BUG_ON(queue->process != queue->remote_insert);
+
+				bulk = &queue->bulks[
+					BULK_INDEX(queue->remote_insert)];
+				bulk->actual = *(int *)header->data;
+				queue->remote_insert++;
+
+				vchiq_log_info(vchiq_core_log_level,
+					"%d: prs %s@%x (%d->%d) %x@%x",
+					state->id, msg_type_str(type),
+					(unsigned int)header,
+					remoteport, localport,
+					bulk->actual, (unsigned int)bulk->data);
+
+				vchiq_log_trace(vchiq_core_log_level,
+					"%d: prs:%d %cx li=%x ri=%x p=%x",
+					state->id, localport,
+					(type == VCHIQ_MSG_BULK_RX_DONE) ?
+						'r' : 't',
+					queue->local_insert,
+					queue->remote_insert, queue->process);
+
+				DEBUG_TRACE(PARSE_LINE);
+				WARN_ON(queue->process == queue->local_insert);
+				vchiq_complete_bulk(bulk);
+				queue->process++;
+				mutex_unlock(&service->bulk_mutex);
+				DEBUG_TRACE(PARSE_LINE);
+				notify_bulks(service, queue, 1/*retry_poll*/);
+				DEBUG_TRACE(PARSE_LINE);
+			}
+			break;
+		case VCHIQ_MSG_PADDING:
+			vchiq_log_trace(vchiq_core_log_level,
+				"%d: prs PADDING@%x,%x",
+				state->id, (unsigned int)header, size);
+			break;
+		case VCHIQ_MSG_PAUSE:
+			/* If initiated, signal the application thread */
+			vchiq_log_trace(vchiq_core_log_level,
+				"%d: prs PAUSE@%x,%x",
+				state->id, (unsigned int)header, size);
+			if (state->conn_state == VCHIQ_CONNSTATE_PAUSED) {
+				vchiq_log_error(vchiq_core_log_level,
+					"%d: PAUSE received in state PAUSED",
+					state->id);
+				break;
+			}
+			if (state->conn_state != VCHIQ_CONNSTATE_PAUSE_SENT) {
+				/* Send a PAUSE in response */
+				if (queue_message(state, NULL,
+					VCHIQ_MAKE_MSG(VCHIQ_MSG_PAUSE, 0, 0),
+					NULL, 0, 0, QMFLAGS_NO_MUTEX_UNLOCK)
+				    == VCHIQ_RETRY)
+					goto bail_not_ready;
+				if (state->is_master)
+					pause_bulks(state);
+			}
+			/* At this point slot_mutex is held */
+			vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSED);
+			vchiq_platform_paused(state);
+			break;
+		case VCHIQ_MSG_RESUME:
+			vchiq_log_trace(vchiq_core_log_level,
+				"%d: prs RESUME@%x,%x",
+				state->id, (unsigned int)header, size);
+			/* Release the slot mutex */
+			mutex_unlock(&state->slot_mutex);
+			if (state->is_master)
+				resume_bulks(state);
+			vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED);
+			vchiq_platform_resumed(state);
+			break;
+
+		case VCHIQ_MSG_REMOTE_USE:
+			vchiq_on_remote_use(state);
+			break;
+		case VCHIQ_MSG_REMOTE_RELEASE:
+			vchiq_on_remote_release(state);
+			break;
+		case VCHIQ_MSG_REMOTE_USE_ACTIVE:
+			vchiq_on_remote_use_active(state);
+			break;
+
+		default:
+			vchiq_log_error(vchiq_core_log_level,
+				"%d: prs invalid msgid %x@%x,%x",
+				state->id, msgid, (unsigned int)header, size);
+			WARN(1, "invalid message\n");
+			break;
+		}
+
+skip_message:
+		if (service) {
+			unlock_service(service);
+			service = NULL;
+		}
+
+		state->rx_pos += calc_stride(size);
+
+		DEBUG_TRACE(PARSE_LINE);
+		/* Perform some housekeeping when the end of the slot is
+		** reached. */
+		if ((state->rx_pos & VCHIQ_SLOT_MASK) == 0) {
+			/* Remove the extra reference count. */
+			release_slot(state, state->rx_info, NULL, NULL);
+			state->rx_data = NULL;
+		}
+	}
+
+bail_not_ready:
+	if (service)
+		unlock_service(service);
+}
+
+/* Called by the slot handler thread */
+static int
+slot_handler_func(void *v)
+{
+	VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
+	VCHIQ_SHARED_STATE_T *local = state->local;
+	DEBUG_INITIALISE(local)
+
+	while (1) {
+		DEBUG_COUNT(SLOT_HANDLER_COUNT);
+		DEBUG_TRACE(SLOT_HANDLER_LINE);
+		remote_event_wait(&local->trigger);
+
+		rmb();
+
+		DEBUG_TRACE(SLOT_HANDLER_LINE);
+		if (state->poll_needed) {
+			/* Check if we need to suspend - may change our
+			 * conn_state */
+			vchiq_platform_check_suspend(state);
+
+			state->poll_needed = 0;
+
+			/* Handle service polling and other rare conditions here
+			** out of the mainline code */
+			switch (state->conn_state) {
+			case VCHIQ_CONNSTATE_CONNECTED:
+				/* Poll the services as requested */
+				poll_services(state);
+				break;
+
+			case VCHIQ_CONNSTATE_PAUSING:
+				if (state->is_master)
+					pause_bulks(state);
+				if (queue_message(state, NULL,
+					VCHIQ_MAKE_MSG(VCHIQ_MSG_PAUSE, 0, 0),
+					NULL, 0, 0,
+					QMFLAGS_NO_MUTEX_UNLOCK)
+				    != VCHIQ_RETRY) {
+					vchiq_set_conn_state(state,
+						VCHIQ_CONNSTATE_PAUSE_SENT);
+				} else {
+					if (state->is_master)
+						resume_bulks(state);
+					/* Retry later */
+					state->poll_needed = 1;
+				}
+				break;
+
+			case VCHIQ_CONNSTATE_PAUSED:
+				vchiq_platform_resume(state);
+				break;
+
+			case VCHIQ_CONNSTATE_RESUMING:
+				if (queue_message(state, NULL,
+					VCHIQ_MAKE_MSG(VCHIQ_MSG_RESUME, 0, 0),
+					NULL, 0, 0, QMFLAGS_NO_MUTEX_LOCK)
+					!= VCHIQ_RETRY) {
+					if (state->is_master)
+						resume_bulks(state);
+					vchiq_set_conn_state(state,
+						VCHIQ_CONNSTATE_CONNECTED);
+					vchiq_platform_resumed(state);
+				} else {
+					/* This should really be impossible,
+					** since the PAUSE should have flushed
+					** through outstanding messages. */
+					vchiq_log_error(vchiq_core_log_level,
+						"Failed to send RESUME "
+						"message");
+					BUG();
+				}
+				break;
+
+			case VCHIQ_CONNSTATE_PAUSE_TIMEOUT:
+			case VCHIQ_CONNSTATE_RESUME_TIMEOUT:
+				vchiq_platform_handle_timeout(state);
+				break;
+			default:
+				break;
+			}
+
+
+		}
+
+		DEBUG_TRACE(SLOT_HANDLER_LINE);
+		parse_rx_slots(state);
+	}
+	return 0;
+}
+
+
+/* Called by the recycle thread */
+static int
+recycle_func(void *v)
+{
+	VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
+	VCHIQ_SHARED_STATE_T *local = state->local;
+
+	while (1) {
+		remote_event_wait(&local->recycle);
+
+		process_free_queue(state);
+	}
+	return 0;
+}
+
+
+/* Called by the sync thread */
+static int
+sync_func(void *v)
+{
+	VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
+	VCHIQ_SHARED_STATE_T *local = state->local;
+	VCHIQ_HEADER_T *header = (VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state,
+		state->remote->slot_sync);
+
+	while (1) {
+		VCHIQ_SERVICE_T *service;
+		int msgid, size;
+		int type;
+		unsigned int localport, remoteport;
+
+		remote_event_wait(&local->sync_trigger);
+
+		rmb();
+
+		msgid = header->msgid;
+		size = header->size;
+		type = VCHIQ_MSG_TYPE(msgid);
+		localport = VCHIQ_MSG_DSTPORT(msgid);
+		remoteport = VCHIQ_MSG_SRCPORT(msgid);
+
+		service = find_service_by_port(state, localport);
+
+		if (!service) {
+			vchiq_log_error(vchiq_sync_log_level,
+				"%d: sf %s@%x (%d->%d) - "
+				"invalid/closed service %d",
+				state->id, msg_type_str(type),
+				(unsigned int)header,
+				remoteport, localport, localport);
+			release_message_sync(state, header);
+			continue;
+		}
+
+		if (vchiq_sync_log_level >= VCHIQ_LOG_TRACE) {
+			int svc_fourcc;
+
+			svc_fourcc = service
+				? service->base.fourcc
+				: VCHIQ_MAKE_FOURCC('?', '?', '?', '?');
+			vchiq_log_trace(vchiq_sync_log_level,
+				"Rcvd Msg %s from %c%c%c%c s:%d d:%d len:%d",
+				msg_type_str(type),
+				VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
+				remoteport, localport, size);
+			if (size > 0)
+				vchiq_log_dump_mem("Rcvd", 0, header->data,
+					min(64, size));
+		}
+
+		switch (type) {
+		case VCHIQ_MSG_OPENACK:
+			if (size >= sizeof(struct vchiq_openack_payload)) {
+				const struct vchiq_openack_payload *payload =
+					(struct vchiq_openack_payload *)
+					header->data;
+				service->peer_version = payload->version;
+			}
+			vchiq_log_info(vchiq_sync_log_level,
+				"%d: sf OPENACK@%x,%x (%d->%d) v:%d",
+				state->id, (unsigned int)header, size,
+				remoteport, localport, service->peer_version);
+			if (service->srvstate == VCHIQ_SRVSTATE_OPENING) {
+				service->remoteport = remoteport;
+				vchiq_set_service_state(service,
+					VCHIQ_SRVSTATE_OPENSYNC);
+				service->sync = 1;
+				up(&service->remove_event);
+			}
+			release_message_sync(state, header);
+			break;
+
+		case VCHIQ_MSG_DATA:
+			vchiq_log_trace(vchiq_sync_log_level,
+				"%d: sf DATA@%x,%x (%d->%d)",
+				state->id, (unsigned int)header, size,
+				remoteport, localport);
+
+			if ((service->remoteport == remoteport) &&
+				(service->srvstate ==
+				VCHIQ_SRVSTATE_OPENSYNC)) {
+				if (make_service_callback(service,
+					VCHIQ_MESSAGE_AVAILABLE, header,
+					NULL) == VCHIQ_RETRY)
+					vchiq_log_error(vchiq_sync_log_level,
+						"synchronous callback to "
+						"service %d returns "
+						"VCHIQ_RETRY",
+						localport);
+			}
+			break;
+
+		default:
+			vchiq_log_error(vchiq_sync_log_level,
+				"%d: sf unexpected msgid %x@%x,%x",
+				state->id, msgid, (unsigned int)header, size);
+			release_message_sync(state, header);
+			break;
+		}
+
+		unlock_service(service);
+	}
+
+	return 0;
+}
+
+
+static void
+init_bulk_queue(VCHIQ_BULK_QUEUE_T *queue)
+{
+	queue->local_insert = 0;
+	queue->remote_insert = 0;
+	queue->process = 0;
+	queue->remote_notify = 0;
+	queue->remove = 0;
+}
+
+
+inline const char *
+get_conn_state_name(VCHIQ_CONNSTATE_T conn_state)
+{
+	return conn_state_names[conn_state];
+}
+
+
+VCHIQ_SLOT_ZERO_T *
+vchiq_init_slots(void *mem_base, int mem_size)
+{
+	int mem_align = (VCHIQ_SLOT_SIZE - (int)mem_base) & VCHIQ_SLOT_MASK;
+	VCHIQ_SLOT_ZERO_T *slot_zero =
+		(VCHIQ_SLOT_ZERO_T *)((char *)mem_base + mem_align);
+	int num_slots = (mem_size - mem_align)/VCHIQ_SLOT_SIZE;
+	int first_data_slot = VCHIQ_SLOT_ZERO_SLOTS;
+
+	/* Ensure there is enough memory to run an absolutely minimum system */
+	num_slots -= first_data_slot;
+
+	if (num_slots < 4) {
+		vchiq_log_error(vchiq_core_log_level,
+			"vchiq_init_slots - insufficient memory %x bytes",
+			mem_size);
+		return NULL;
+	}
+
+	memset(slot_zero, 0, sizeof(VCHIQ_SLOT_ZERO_T));
+
+	slot_zero->magic = VCHIQ_MAGIC;
+	slot_zero->version = VCHIQ_VERSION;
+	slot_zero->version_min = VCHIQ_VERSION_MIN;
+	slot_zero->slot_zero_size = sizeof(VCHIQ_SLOT_ZERO_T);
+	slot_zero->slot_size = VCHIQ_SLOT_SIZE;
+	slot_zero->max_slots = VCHIQ_MAX_SLOTS;
+	slot_zero->max_slots_per_side = VCHIQ_MAX_SLOTS_PER_SIDE;
+
+	slot_zero->master.slot_sync = first_data_slot;
+	slot_zero->master.slot_first = first_data_slot + 1;
+	slot_zero->master.slot_last = first_data_slot + (num_slots/2) - 1;
+	slot_zero->slave.slot_sync = first_data_slot + (num_slots/2);
+	slot_zero->slave.slot_first = first_data_slot + (num_slots/2) + 1;
+	slot_zero->slave.slot_last = first_data_slot + num_slots - 1;
+
+	return slot_zero;
+}
+
+VCHIQ_STATUS_T
+vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero,
+		 int is_master)
+{
+	VCHIQ_SHARED_STATE_T *local;
+	VCHIQ_SHARED_STATE_T *remote;
+	VCHIQ_STATUS_T status;
+	char threadname[10];
+	static int id;
+	int i;
+
+	vchiq_log_warning(vchiq_core_log_level,
+		"%s: slot_zero = 0x%08lx, is_master = %d",
+		__func__, (unsigned long)slot_zero, is_master);
+
+	/* Check the input configuration */
+
+	if (slot_zero->magic != VCHIQ_MAGIC) {
+		vchiq_loud_error_header();
+		vchiq_loud_error("Invalid VCHIQ magic value found.");
+		vchiq_loud_error("slot_zero=%x: magic=%x (expected %x)",
+			(unsigned int)slot_zero, slot_zero->magic, VCHIQ_MAGIC);
+		vchiq_loud_error_footer();
+		return VCHIQ_ERROR;
+	}
+
+	if (slot_zero->version < VCHIQ_VERSION_MIN) {
+		vchiq_loud_error_header();
+		vchiq_loud_error("Incompatible VCHIQ versions found.");
+		vchiq_loud_error("slot_zero=%x: VideoCore version=%d "
+			"(minimum %d)",
+			(unsigned int)slot_zero, slot_zero->version,
+			VCHIQ_VERSION_MIN);
+		vchiq_loud_error("Restart with a newer VideoCore image.");
+		vchiq_loud_error_footer();
+		return VCHIQ_ERROR;
+	}
+
+	if (VCHIQ_VERSION < slot_zero->version_min) {
+		vchiq_loud_error_header();
+		vchiq_loud_error("Incompatible VCHIQ versions found.");
+		vchiq_loud_error("slot_zero=%x: version=%d (VideoCore "
+			"minimum %d)",
+			(unsigned int)slot_zero, VCHIQ_VERSION,
+			slot_zero->version_min);
+		vchiq_loud_error("Restart with a newer kernel.");
+		vchiq_loud_error_footer();
+		return VCHIQ_ERROR;
+	}
+
+	if ((slot_zero->slot_zero_size != sizeof(VCHIQ_SLOT_ZERO_T)) ||
+		 (slot_zero->slot_size != VCHIQ_SLOT_SIZE) ||
+		 (slot_zero->max_slots != VCHIQ_MAX_SLOTS) ||
+		 (slot_zero->max_slots_per_side != VCHIQ_MAX_SLOTS_PER_SIDE)) {
+		vchiq_loud_error_header();
+		if (slot_zero->slot_zero_size != sizeof(VCHIQ_SLOT_ZERO_T))
+			vchiq_loud_error("slot_zero=%x: slot_zero_size=%x "
+				"(expected %x)",
+				(unsigned int)slot_zero,
+				slot_zero->slot_zero_size,
+				sizeof(VCHIQ_SLOT_ZERO_T));
+		if (slot_zero->slot_size != VCHIQ_SLOT_SIZE)
+			vchiq_loud_error("slot_zero=%x: slot_size=%d "
+				"(expected %d",
+				(unsigned int)slot_zero, slot_zero->slot_size,
+				VCHIQ_SLOT_SIZE);
+		if (slot_zero->max_slots != VCHIQ_MAX_SLOTS)
+			vchiq_loud_error("slot_zero=%x: max_slots=%d "
+				"(expected %d)",
+				(unsigned int)slot_zero, slot_zero->max_slots,
+				VCHIQ_MAX_SLOTS);
+		if (slot_zero->max_slots_per_side != VCHIQ_MAX_SLOTS_PER_SIDE)
+			vchiq_loud_error("slot_zero=%x: max_slots_per_side=%d "
+				"(expected %d)",
+				(unsigned int)slot_zero,
+				slot_zero->max_slots_per_side,
+				VCHIQ_MAX_SLOTS_PER_SIDE);
+		vchiq_loud_error_footer();
+		return VCHIQ_ERROR;
+	}
+
+	if (VCHIQ_VERSION < slot_zero->version)
+		slot_zero->version = VCHIQ_VERSION;
+
+	if (is_master) {
+		local = &slot_zero->master;
+		remote = &slot_zero->slave;
+	} else {
+		local = &slot_zero->slave;
+		remote = &slot_zero->master;
+	}
+
+	if (local->initialised) {
+		vchiq_loud_error_header();
+		if (remote->initialised)
+			vchiq_loud_error("local state has already been "
+				"initialised");
+		else
+			vchiq_loud_error("master/slave mismatch - two %ss",
+				is_master ? "master" : "slave");
+		vchiq_loud_error_footer();
+		return VCHIQ_ERROR;
+	}
+
+	memset(state, 0, sizeof(VCHIQ_STATE_T));
+
+	state->id = id++;
+	state->is_master = is_master;
+
+	/*
+		initialize shared state pointers
+	 */
+
+	state->local = local;
+	state->remote = remote;
+	state->slot_data = (VCHIQ_SLOT_T *)slot_zero;
+
+	/*
+		initialize events and mutexes
+	 */
+
+	sema_init(&state->connect, 0);
+	mutex_init(&state->mutex);
+	sema_init(&state->trigger_event, 0);
+	sema_init(&state->recycle_event, 0);
+	sema_init(&state->sync_trigger_event, 0);
+	sema_init(&state->sync_release_event, 0);
+
+	mutex_init(&state->slot_mutex);
+	mutex_init(&state->recycle_mutex);
+	mutex_init(&state->sync_mutex);
+	mutex_init(&state->bulk_transfer_mutex);
+
+	sema_init(&state->slot_available_event, 0);
+	sema_init(&state->slot_remove_event, 0);
+	sema_init(&state->data_quota_event, 0);
+
+	state->slot_queue_available = 0;
+
+	for (i = 0; i < VCHIQ_MAX_SERVICES; i++) {
+		VCHIQ_SERVICE_QUOTA_T *service_quota =
+			&state->service_quotas[i];
+		sema_init(&service_quota->quota_event, 0);
+	}
+
+	for (i = local->slot_first; i <= local->slot_last; i++) {
+		local->slot_queue[state->slot_queue_available++] = i;
+		up(&state->slot_available_event);
+	}
+
+	state->default_slot_quota = state->slot_queue_available/2;
+	state->default_message_quota =
+		min((unsigned short)(state->default_slot_quota * 256),
+		(unsigned short)~0);
+
+	state->previous_data_index = -1;
+	state->data_use_count = 0;
+	state->data_quota = state->slot_queue_available - 1;
+
+	local->trigger.event = &state->trigger_event;
+	remote_event_create(&local->trigger);
+	local->tx_pos = 0;
+
+	local->recycle.event = &state->recycle_event;
+	remote_event_create(&local->recycle);
+	local->slot_queue_recycle = state->slot_queue_available;
+
+	local->sync_trigger.event = &state->sync_trigger_event;
+	remote_event_create(&local->sync_trigger);
+
+	local->sync_release.event = &state->sync_release_event;
+	remote_event_create(&local->sync_release);
+
+	/* At start-of-day, the slot is empty and available */
+	((VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state, local->slot_sync))->msgid
+		= VCHIQ_MSGID_PADDING;
+	remote_event_signal_local(&local->sync_release);
+
+	local->debug[DEBUG_ENTRIES] = DEBUG_MAX;
+
+	status = vchiq_platform_init_state(state);
+
+	/*
+		bring up slot handler thread
+	 */
+	snprintf(threadname, sizeof(threadname), "VCHIQ-%d", state->id);
+	state->slot_handler_thread = kthread_create(&slot_handler_func,
+		(void *)state,
+		threadname);
+
+	if (state->slot_handler_thread == NULL) {
+		vchiq_loud_error_header();
+		vchiq_loud_error("couldn't create thread %s", threadname);
+		vchiq_loud_error_footer();
+		return VCHIQ_ERROR;
+	}
+	set_user_nice(state->slot_handler_thread, -19);
+	wake_up_process(state->slot_handler_thread);
+
+	snprintf(threadname, sizeof(threadname), "VCHIQr-%d", state->id);
+	state->recycle_thread = kthread_create(&recycle_func,
+		(void *)state,
+		threadname);
+	if (state->recycle_thread == NULL) {
+		vchiq_loud_error_header();
+		vchiq_loud_error("couldn't create thread %s", threadname);
+		vchiq_loud_error_footer();
+		return VCHIQ_ERROR;
+	}
+	set_user_nice(state->recycle_thread, -19);
+	wake_up_process(state->recycle_thread);
+
+	snprintf(threadname, sizeof(threadname), "VCHIQs-%d", state->id);
+	state->sync_thread = kthread_create(&sync_func,
+		(void *)state,
+		threadname);
+	if (state->sync_thread == NULL) {
+		vchiq_loud_error_header();
+		vchiq_loud_error("couldn't create thread %s", threadname);
+		vchiq_loud_error_footer();
+		return VCHIQ_ERROR;
+	}
+	set_user_nice(state->sync_thread, -20);
+	wake_up_process(state->sync_thread);
+
+	BUG_ON(state->id >= VCHIQ_MAX_STATES);
+	vchiq_states[state->id] = state;
+
+	/* Indicate readiness to the other side */
+	local->initialised = 1;
+
+	return status;
+}
+
+/* Called from application thread when a client or server service is created. */
+VCHIQ_SERVICE_T *
+vchiq_add_service_internal(VCHIQ_STATE_T *state,
+	const VCHIQ_SERVICE_PARAMS_T *params, int srvstate,
+	VCHIQ_INSTANCE_T instance, VCHIQ_USERDATA_TERM_T userdata_term)
+{
+	VCHIQ_SERVICE_T *service;
+
+	service = kmalloc(sizeof(VCHIQ_SERVICE_T), GFP_KERNEL);
+	if (service) {
+		service->base.fourcc   = params->fourcc;
+		service->base.callback = params->callback;
+		service->base.userdata = params->userdata;
+		service->handle        = VCHIQ_SERVICE_HANDLE_INVALID;
+		service->ref_count     = 1;
+		service->srvstate      = VCHIQ_SRVSTATE_FREE;
+		service->userdata_term = userdata_term;
+		service->localport     = VCHIQ_PORT_FREE;
+		service->remoteport    = VCHIQ_PORT_FREE;
+
+		service->public_fourcc = (srvstate == VCHIQ_SRVSTATE_OPENING) ?
+			VCHIQ_FOURCC_INVALID : params->fourcc;
+		service->client_id     = 0;
+		service->auto_close    = 1;
+		service->sync          = 0;
+		service->closing       = 0;
+		service->trace         = 0;
+		atomic_set(&service->poll_flags, 0);
+		service->version       = params->version;
+		service->version_min   = params->version_min;
+		service->state         = state;
+		service->instance      = instance;
+		service->service_use_count = 0;
+		init_bulk_queue(&service->bulk_tx);
+		init_bulk_queue(&service->bulk_rx);
+		sema_init(&service->remove_event, 0);
+		sema_init(&service->bulk_remove_event, 0);
+		mutex_init(&service->bulk_mutex);
+		memset(&service->stats, 0, sizeof(service->stats));
+	} else {
+		vchiq_log_error(vchiq_core_log_level,
+			"Out of memory");
+	}
+
+	if (service) {
+		VCHIQ_SERVICE_T **pservice = NULL;
+		int i;
+
+		/* Although it is perfectly possible to use service_spinlock
+		** to protect the creation of services, it is overkill as it
+		** disables interrupts while the array is searched.
+		** The only danger is of another thread trying to create a
+		** service - service deletion is safe.
+		** Therefore it is preferable to use state->mutex which,
+		** although slower to claim, doesn't block interrupts while
+		** it is held.
+		*/
+
+		mutex_lock(&state->mutex);
+
+		/* Prepare to use a previously unused service */
+		if (state->unused_service < VCHIQ_MAX_SERVICES)
+			pservice = &state->services[state->unused_service];
+
+		if (srvstate == VCHIQ_SRVSTATE_OPENING) {
+			for (i = 0; i < state->unused_service; i++) {
+				VCHIQ_SERVICE_T *srv = state->services[i];
+				if (!srv) {
+					pservice = &state->services[i];
+					break;
+				}
+			}
+		} else {
+			for (i = (state->unused_service - 1); i >= 0; i--) {
+				VCHIQ_SERVICE_T *srv = state->services[i];
+				if (!srv)
+					pservice = &state->services[i];
+				else if ((srv->public_fourcc == params->fourcc)
+					&& ((srv->instance != instance) ||
+					(srv->base.callback !=
+					params->callback))) {
+					/* There is another server using this
+					** fourcc which doesn't match. */
+					pservice = NULL;
+					break;
+				}
+			}
+		}
+
+		if (pservice) {
+			service->localport = (pservice - state->services);
+			if (!handle_seq)
+				handle_seq = VCHIQ_MAX_STATES *
+					 VCHIQ_MAX_SERVICES;
+			service->handle = handle_seq |
+				(state->id * VCHIQ_MAX_SERVICES) |
+				service->localport;
+			handle_seq += VCHIQ_MAX_STATES * VCHIQ_MAX_SERVICES;
+			*pservice = service;
+			if (pservice == &state->services[state->unused_service])
+				state->unused_service++;
+		}
+
+		mutex_unlock(&state->mutex);
+
+		if (!pservice) {
+			kfree(service);
+			service = NULL;
+		}
+	}
+
+	if (service) {
+		VCHIQ_SERVICE_QUOTA_T *service_quota =
+			&state->service_quotas[service->localport];
+		service_quota->slot_quota = state->default_slot_quota;
+		service_quota->message_quota = state->default_message_quota;
+		if (service_quota->slot_use_count == 0)
+			service_quota->previous_tx_index =
+				SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos)
+				- 1;
+
+		/* Bring this service online */
+		vchiq_set_service_state(service, srvstate);
+
+		vchiq_log_info(vchiq_core_msg_log_level,
+			"%s Service %c%c%c%c SrcPort:%d",
+			(srvstate == VCHIQ_SRVSTATE_OPENING)
+			? "Open" : "Add",
+			VCHIQ_FOURCC_AS_4CHARS(params->fourcc),
+			service->localport);
+	}
+
+	/* Don't unlock the service - leave it with a ref_count of 1. */
+
+	return service;
+}
+
+VCHIQ_STATUS_T
+vchiq_open_service_internal(VCHIQ_SERVICE_T *service, int client_id)
+{
+	struct vchiq_open_payload payload = {
+		service->base.fourcc,
+		client_id,
+		service->version,
+		service->version_min
+	};
+	VCHIQ_ELEMENT_T body = { &payload, sizeof(payload) };
+	VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+
+	service->client_id = client_id;
+	vchiq_use_service_internal(service);
+	status = queue_message(service->state, NULL,
+		VCHIQ_MAKE_MSG(VCHIQ_MSG_OPEN, service->localport, 0),
+		&body, 1, sizeof(payload), QMFLAGS_IS_BLOCKING);
+	if (status == VCHIQ_SUCCESS) {
+		/* Wait for the ACK/NAK */
+		if (down_interruptible(&service->remove_event) != 0) {
+			status = VCHIQ_RETRY;
+			vchiq_release_service_internal(service);
+		} else if ((service->srvstate != VCHIQ_SRVSTATE_OPEN) &&
+			(service->srvstate != VCHIQ_SRVSTATE_OPENSYNC)) {
+			if (service->srvstate != VCHIQ_SRVSTATE_CLOSEWAIT)
+				vchiq_log_error(vchiq_core_log_level,
+					"%d: osi - srvstate = %s (ref %d)",
+					service->state->id,
+					srvstate_names[service->srvstate],
+					service->ref_count);
+			status = VCHIQ_ERROR;
+			VCHIQ_SERVICE_STATS_INC(service, error_count);
+			vchiq_release_service_internal(service);
+		}
+	}
+	return status;
+}
+
+static void
+release_service_messages(VCHIQ_SERVICE_T *service)
+{
+	VCHIQ_STATE_T *state = service->state;
+	int slot_last = state->remote->slot_last;
+	int i;
+
+	/* Release any claimed messages aimed at this service */
+
+	if (service->sync) {
+		VCHIQ_HEADER_T *header =
+			(VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state,
+						state->remote->slot_sync);
+		if (VCHIQ_MSG_DSTPORT(header->msgid) == service->localport)
+			release_message_sync(state, header);
+
+		return;
+	}
+
+	for (i = state->remote->slot_first; i <= slot_last; i++) {
+		VCHIQ_SLOT_INFO_T *slot_info =
+			SLOT_INFO_FROM_INDEX(state, i);
+		if (slot_info->release_count != slot_info->use_count) {
+			char *data =
+				(char *)SLOT_DATA_FROM_INDEX(state, i);
+			unsigned int pos, end;
+
+			end = VCHIQ_SLOT_SIZE;
+			if (data == state->rx_data)
+				/* This buffer is still being read from - stop
+				** at the current read position */
+				end = state->rx_pos & VCHIQ_SLOT_MASK;
+
+			pos = 0;
+
+			while (pos < end) {
+				VCHIQ_HEADER_T *header =
+					(VCHIQ_HEADER_T *)(data + pos);
+				int msgid = header->msgid;
+				int port = VCHIQ_MSG_DSTPORT(msgid);
+				if ((port == service->localport) &&
+					(msgid & VCHIQ_MSGID_CLAIMED)) {
+					vchiq_log_info(vchiq_core_log_level,
+						"  fsi - hdr %x",
+						(unsigned int)header);
+					release_slot(state, slot_info, header,
+						NULL);
+				}
+				pos += calc_stride(header->size);
+				if (pos > VCHIQ_SLOT_SIZE) {
+					vchiq_log_error(vchiq_core_log_level,
+						"fsi - pos %x: header %x, "
+						"msgid %x, header->msgid %x, "
+						"header->size %x",
+						pos, (unsigned int)header,
+						msgid, header->msgid,
+						header->size);
+					WARN(1, "invalid slot position\n");
+				}
+			}
+		}
+	}
+}
+
+static int
+do_abort_bulks(VCHIQ_SERVICE_T *service)
+{
+	VCHIQ_STATUS_T status;
+
+	/* Abort any outstanding bulk transfers */
+	if (mutex_lock_interruptible(&service->bulk_mutex) != 0)
+		return 0;
+	abort_outstanding_bulks(service, &service->bulk_tx);
+	abort_outstanding_bulks(service, &service->bulk_rx);
+	mutex_unlock(&service->bulk_mutex);
+
+	status = notify_bulks(service, &service->bulk_tx, 0/*!retry_poll*/);
+	if (status == VCHIQ_SUCCESS)
+		status = notify_bulks(service, &service->bulk_rx,
+			0/*!retry_poll*/);
+	return (status == VCHIQ_SUCCESS);
+}
+
+static VCHIQ_STATUS_T
+close_service_complete(VCHIQ_SERVICE_T *service, int failstate)
+{
+	VCHIQ_STATUS_T status;
+	int is_server = (service->public_fourcc != VCHIQ_FOURCC_INVALID);
+	int newstate;
+
+	switch (service->srvstate) {
+	case VCHIQ_SRVSTATE_OPEN:
+	case VCHIQ_SRVSTATE_CLOSESENT:
+	case VCHIQ_SRVSTATE_CLOSERECVD:
+		if (is_server) {
+			if (service->auto_close) {
+				service->client_id = 0;
+				service->remoteport = VCHIQ_PORT_FREE;
+				newstate = VCHIQ_SRVSTATE_LISTENING;
+			} else
+				newstate = VCHIQ_SRVSTATE_CLOSEWAIT;
+		} else
+			newstate = VCHIQ_SRVSTATE_CLOSED;
+		vchiq_set_service_state(service, newstate);
+		break;
+	case VCHIQ_SRVSTATE_LISTENING:
+		break;
+	default:
+		vchiq_log_error(vchiq_core_log_level,
+			"close_service_complete(%x) called in state %s",
+			service->handle, srvstate_names[service->srvstate]);
+		WARN(1, "close_service_complete in unexpected state\n");
+		return VCHIQ_ERROR;
+	}
+
+	status = make_service_callback(service,
+		VCHIQ_SERVICE_CLOSED, NULL, NULL);
+
+	if (status != VCHIQ_RETRY) {
+		int uc = service->service_use_count;
+		int i;
+		/* Complete the close process */
+		for (i = 0; i < uc; i++)
+			/* cater for cases where close is forced and the
+			** client may not close all it's handles */
+			vchiq_release_service_internal(service);
+
+		service->client_id = 0;
+		service->remoteport = VCHIQ_PORT_FREE;
+
+		if (service->srvstate == VCHIQ_SRVSTATE_CLOSED)
+			vchiq_free_service_internal(service);
+		else if (service->srvstate != VCHIQ_SRVSTATE_CLOSEWAIT) {
+			if (is_server)
+				service->closing = 0;
+
+			up(&service->remove_event);
+		}
+	} else
+		vchiq_set_service_state(service, failstate);
+
+	return status;
+}
+
+/* Called by the slot handler */
+VCHIQ_STATUS_T
+vchiq_close_service_internal(VCHIQ_SERVICE_T *service, int close_recvd)
+{
+	VCHIQ_STATE_T *state = service->state;
+	VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+	int is_server = (service->public_fourcc != VCHIQ_FOURCC_INVALID);
+
+	vchiq_log_info(vchiq_core_log_level, "%d: csi:%d,%d (%s)",
+		service->state->id, service->localport, close_recvd,
+		srvstate_names[service->srvstate]);
+
+	switch (service->srvstate) {
+	case VCHIQ_SRVSTATE_CLOSED:
+	case VCHIQ_SRVSTATE_HIDDEN:
+	case VCHIQ_SRVSTATE_LISTENING:
+	case VCHIQ_SRVSTATE_CLOSEWAIT:
+		if (close_recvd)
+			vchiq_log_error(vchiq_core_log_level,
+				"vchiq_close_service_internal(1) called "
+				"in state %s",
+				srvstate_names[service->srvstate]);
+		else if (is_server) {
+			if (service->srvstate == VCHIQ_SRVSTATE_LISTENING) {
+				status = VCHIQ_ERROR;
+			} else {
+				service->client_id = 0;
+				service->remoteport = VCHIQ_PORT_FREE;
+				if (service->srvstate ==
+					VCHIQ_SRVSTATE_CLOSEWAIT)
+					vchiq_set_service_state(service,
+						VCHIQ_SRVSTATE_LISTENING);
+			}
+			up(&service->remove_event);
+		} else
+			vchiq_free_service_internal(service);
+		break;
+	case VCHIQ_SRVSTATE_OPENING:
+		if (close_recvd) {
+			/* The open was rejected - tell the user */
+			vchiq_set_service_state(service,
+				VCHIQ_SRVSTATE_CLOSEWAIT);
+			up(&service->remove_event);
+		} else {
+			/* Shutdown mid-open - let the other side know */
+			status = queue_message(state, service,
+				VCHIQ_MAKE_MSG
+				(VCHIQ_MSG_CLOSE,
+				service->localport,
+				VCHIQ_MSG_DSTPORT(service->remoteport)),
+				NULL, 0, 0, 0);
+		}
+		break;
+
+	case VCHIQ_SRVSTATE_OPENSYNC:
+		mutex_lock(&state->sync_mutex);
+		/* Drop through */
+
+	case VCHIQ_SRVSTATE_OPEN:
+		if (state->is_master || close_recvd) {
+			if (!do_abort_bulks(service))
+				status = VCHIQ_RETRY;
+		}
+
+		release_service_messages(service);
+
+		if (status == VCHIQ_SUCCESS)
+			status = queue_message(state, service,
+				VCHIQ_MAKE_MSG
+				(VCHIQ_MSG_CLOSE,
+				service->localport,
+				VCHIQ_MSG_DSTPORT(service->remoteport)),
+				NULL, 0, 0, QMFLAGS_NO_MUTEX_UNLOCK);
+
+		if (status == VCHIQ_SUCCESS) {
+			if (!close_recvd) {
+				/* Change the state while the mutex is
+				   still held */
+				vchiq_set_service_state(service,
+							VCHIQ_SRVSTATE_CLOSESENT);
+				mutex_unlock(&state->slot_mutex);
+				if (service->sync)
+					mutex_unlock(&state->sync_mutex);
+				break;
+			}
+		} else if (service->srvstate == VCHIQ_SRVSTATE_OPENSYNC) {
+			mutex_unlock(&state->sync_mutex);
+			break;
+		} else
+			break;
+
+		/* Change the state while the mutex is still held */
+		vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSERECVD);
+		mutex_unlock(&state->slot_mutex);
+		if (service->sync)
+			mutex_unlock(&state->sync_mutex);
+
+		status = close_service_complete(service,
+				VCHIQ_SRVSTATE_CLOSERECVD);
+		break;
+
+	case VCHIQ_SRVSTATE_CLOSESENT:
+		if (!close_recvd)
+			/* This happens when a process is killed mid-close */
+			break;
+
+		if (!state->is_master) {
+			if (!do_abort_bulks(service)) {
+				status = VCHIQ_RETRY;
+				break;
+			}
+		}
+
+		if (status == VCHIQ_SUCCESS)
+			status = close_service_complete(service,
+				VCHIQ_SRVSTATE_CLOSERECVD);
+		break;
+
+	case VCHIQ_SRVSTATE_CLOSERECVD:
+		if (!close_recvd && is_server)
+			/* Force into LISTENING mode */
+			vchiq_set_service_state(service,
+				VCHIQ_SRVSTATE_LISTENING);
+		status = close_service_complete(service,
+			VCHIQ_SRVSTATE_CLOSERECVD);
+		break;
+
+	default:
+		vchiq_log_error(vchiq_core_log_level,
+			"vchiq_close_service_internal(%d) called in state %s",
+			close_recvd, srvstate_names[service->srvstate]);
+		break;
+	}
+
+	return status;
+}
+
+/* Called from the application process upon process death */
+void
+vchiq_terminate_service_internal(VCHIQ_SERVICE_T *service)
+{
+	VCHIQ_STATE_T *state = service->state;
+
+	vchiq_log_info(vchiq_core_log_level, "%d: tsi - (%d<->%d)",
+		state->id, service->localport, service->remoteport);
+
+	mark_service_closing(service);
+
+	/* Mark the service for removal by the slot handler */
+	request_poll(state, service, VCHIQ_POLL_REMOVE);
+}
+
+/* Called from the slot handler */
+void
+vchiq_free_service_internal(VCHIQ_SERVICE_T *service)
+{
+	VCHIQ_STATE_T *state = service->state;
+
+	vchiq_log_info(vchiq_core_log_level, "%d: fsi - (%d)",
+		state->id, service->localport);
+
+	switch (service->srvstate) {
+	case VCHIQ_SRVSTATE_OPENING:
+	case VCHIQ_SRVSTATE_CLOSED:
+	case VCHIQ_SRVSTATE_HIDDEN:
+	case VCHIQ_SRVSTATE_LISTENING:
+	case VCHIQ_SRVSTATE_CLOSEWAIT:
+		break;
+	default:
+		vchiq_log_error(vchiq_core_log_level,
+			"%d: fsi - (%d) in state %s",
+			state->id, service->localport,
+			srvstate_names[service->srvstate]);
+		return;
+	}
+
+	vchiq_set_service_state(service, VCHIQ_SRVSTATE_FREE);
+
+	up(&service->remove_event);
+
+	/* Release the initial lock */
+	unlock_service(service);
+}
+
+VCHIQ_STATUS_T
+vchiq_connect_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance)
+{
+	VCHIQ_SERVICE_T *service;
+	int i;
+
+	/* Find all services registered to this client and enable them. */
+	i = 0;
+	while ((service = next_service_by_instance(state, instance,
+		&i)) !=	NULL) {
+		if (service->srvstate == VCHIQ_SRVSTATE_HIDDEN)
+			vchiq_set_service_state(service,
+				VCHIQ_SRVSTATE_LISTENING);
+		unlock_service(service);
+	}
+
+	if (state->conn_state == VCHIQ_CONNSTATE_DISCONNECTED) {
+		if (queue_message(state, NULL,
+			VCHIQ_MAKE_MSG(VCHIQ_MSG_CONNECT, 0, 0), NULL, 0,
+			0, QMFLAGS_IS_BLOCKING) == VCHIQ_RETRY)
+			return VCHIQ_RETRY;
+
+		vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTING);
+	}
+
+	if (state->conn_state == VCHIQ_CONNSTATE_CONNECTING) {
+		if (down_interruptible(&state->connect) != 0)
+			return VCHIQ_RETRY;
+
+		vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED);
+		up(&state->connect);
+	}
+
+	return VCHIQ_SUCCESS;
+}
+
+VCHIQ_STATUS_T
+vchiq_shutdown_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance)
+{
+	VCHIQ_SERVICE_T *service;
+	int i;
+
+	/* Find all services registered to this client and enable them. */
+	i = 0;
+	while ((service = next_service_by_instance(state, instance,
+		&i)) !=	NULL) {
+		(void)vchiq_remove_service(service->handle);
+		unlock_service(service);
+	}
+
+	return VCHIQ_SUCCESS;
+}
+
+VCHIQ_STATUS_T
+vchiq_pause_internal(VCHIQ_STATE_T *state)
+{
+	VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+
+	switch (state->conn_state) {
+	case VCHIQ_CONNSTATE_CONNECTED:
+		/* Request a pause */
+		vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSING);
+		request_poll(state, NULL, 0);
+		break;
+	default:
+		vchiq_log_error(vchiq_core_log_level,
+			"vchiq_pause_internal in state %s\n",
+			conn_state_names[state->conn_state]);
+		status = VCHIQ_ERROR;
+		VCHIQ_STATS_INC(state, error_count);
+		break;
+	}
+
+	return status;
+}
+
+VCHIQ_STATUS_T
+vchiq_resume_internal(VCHIQ_STATE_T *state)
+{
+	VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+
+	if (state->conn_state == VCHIQ_CONNSTATE_PAUSED) {
+		vchiq_set_conn_state(state, VCHIQ_CONNSTATE_RESUMING);
+		request_poll(state, NULL, 0);
+	} else {
+		status = VCHIQ_ERROR;
+		VCHIQ_STATS_INC(state, error_count);
+	}
+
+	return status;
+}
+
+VCHIQ_STATUS_T
+vchiq_close_service(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	/* Unregister the service */
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+
+	if (!service)
+		return VCHIQ_ERROR;
+
+	vchiq_log_info(vchiq_core_log_level,
+		"%d: close_service:%d",
+		service->state->id, service->localport);
+
+	if ((service->srvstate == VCHIQ_SRVSTATE_FREE) ||
+		(service->srvstate == VCHIQ_SRVSTATE_LISTENING) ||
+		(service->srvstate == VCHIQ_SRVSTATE_HIDDEN)) {
+		unlock_service(service);
+		return VCHIQ_ERROR;
+	}
+
+	mark_service_closing(service);
+
+	if (current == service->state->slot_handler_thread) {
+		status = vchiq_close_service_internal(service,
+			0/*!close_recvd*/);
+		BUG_ON(status == VCHIQ_RETRY);
+	} else {
+	/* Mark the service for termination by the slot handler */
+		request_poll(service->state, service, VCHIQ_POLL_TERMINATE);
+	}
+
+	while (1) {
+		if (down_interruptible(&service->remove_event) != 0) {
+			status = VCHIQ_RETRY;
+			break;
+		}
+
+		if ((service->srvstate == VCHIQ_SRVSTATE_FREE) ||
+			(service->srvstate == VCHIQ_SRVSTATE_LISTENING) ||
+			(service->srvstate == VCHIQ_SRVSTATE_OPEN))
+			break;
+
+		vchiq_log_warning(vchiq_core_log_level,
+			"%d: close_service:%d - waiting in state %s",
+			service->state->id, service->localport,
+			srvstate_names[service->srvstate]);
+	}
+
+	if ((status == VCHIQ_SUCCESS) &&
+		(service->srvstate != VCHIQ_SRVSTATE_FREE) &&
+		(service->srvstate != VCHIQ_SRVSTATE_LISTENING))
+		status = VCHIQ_ERROR;
+
+	unlock_service(service);
+
+	return status;
+}
+
+VCHIQ_STATUS_T
+vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	/* Unregister the service */
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
+
+	if (!service)
+		return VCHIQ_ERROR;
+
+	vchiq_log_info(vchiq_core_log_level,
+		"%d: remove_service:%d",
+		service->state->id, service->localport);
+
+	if (service->srvstate == VCHIQ_SRVSTATE_FREE) {
+		unlock_service(service);
+		return VCHIQ_ERROR;
+	}
+
+	mark_service_closing(service);
+
+	if ((service->srvstate == VCHIQ_SRVSTATE_HIDDEN) ||
+		(current == service->state->slot_handler_thread)) {
+		/* Make it look like a client, because it must be removed and
+		   not left in the LISTENING state. */
+		service->public_fourcc = VCHIQ_FOURCC_INVALID;
+
+		status = vchiq_close_service_internal(service,
+			0/*!close_recvd*/);
+		BUG_ON(status == VCHIQ_RETRY);
+	} else {
+		/* Mark the service for removal by the slot handler */
+		request_poll(service->state, service, VCHIQ_POLL_REMOVE);
+	}
+	while (1) {
+		if (down_interruptible(&service->remove_event) != 0) {
+			status = VCHIQ_RETRY;
+			break;
+		}
+
+		if ((service->srvstate == VCHIQ_SRVSTATE_FREE) ||
+			(service->srvstate == VCHIQ_SRVSTATE_OPEN))
+			break;
+
+		vchiq_log_warning(vchiq_core_log_level,
+			"%d: remove_service:%d - waiting in state %s",
+			service->state->id, service->localport,
+			srvstate_names[service->srvstate]);
+	}
+
+	if ((status == VCHIQ_SUCCESS) &&
+		(service->srvstate != VCHIQ_SRVSTATE_FREE))
+		status = VCHIQ_ERROR;
+
+	unlock_service(service);
+
+	return status;
+}
+
+
+/* This function may be called by kernel threads or user threads.
+ * User threads may receive VCHIQ_RETRY to indicate that a signal has been
+ * received and the call should be retried after being returned to user
+ * context.
+ * When called in blocking mode, the userdata field points to a bulk_waiter
+ * structure.
+ */
+VCHIQ_STATUS_T
+vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
+	VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
+	VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir)
+{
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	VCHIQ_BULK_QUEUE_T *queue;
+	VCHIQ_BULK_T *bulk;
+	VCHIQ_STATE_T *state;
+	struct bulk_waiter *bulk_waiter = NULL;
+	const char dir_char = (dir == VCHIQ_BULK_TRANSMIT) ? 't' : 'r';
+	const int dir_msgtype = (dir == VCHIQ_BULK_TRANSMIT) ?
+		VCHIQ_MSG_BULK_TX : VCHIQ_MSG_BULK_RX;
+	VCHIQ_STATUS_T status = VCHIQ_ERROR;
+
+	if (!service ||
+		 (service->srvstate != VCHIQ_SRVSTATE_OPEN) ||
+		 ((memhandle == VCHI_MEM_HANDLE_INVALID) && (offset == NULL)) ||
+		 (vchiq_check_service(service) != VCHIQ_SUCCESS))
+		goto error_exit;
+
+	switch (mode) {
+	case VCHIQ_BULK_MODE_NOCALLBACK:
+	case VCHIQ_BULK_MODE_CALLBACK:
+		break;
+	case VCHIQ_BULK_MODE_BLOCKING:
+		bulk_waiter = (struct bulk_waiter *)userdata;
+		sema_init(&bulk_waiter->event, 0);
+		bulk_waiter->actual = 0;
+		bulk_waiter->bulk = NULL;
+		break;
+	case VCHIQ_BULK_MODE_WAITING:
+		bulk_waiter = (struct bulk_waiter *)userdata;
+		bulk = bulk_waiter->bulk;
+		goto waiting;
+	default:
+		goto error_exit;
+	}
+
+	state = service->state;
+
+	queue = (dir == VCHIQ_BULK_TRANSMIT) ?
+		&service->bulk_tx : &service->bulk_rx;
+
+	if (mutex_lock_interruptible(&service->bulk_mutex) != 0) {
+		status = VCHIQ_RETRY;
+		goto error_exit;
+	}
+
+	if (queue->local_insert == queue->remove + VCHIQ_NUM_SERVICE_BULKS) {
+		VCHIQ_SERVICE_STATS_INC(service, bulk_stalls);
+		do {
+			mutex_unlock(&service->bulk_mutex);
+			if (down_interruptible(&service->bulk_remove_event)
+				!= 0) {
+				status = VCHIQ_RETRY;
+				goto error_exit;
+			}
+			if (mutex_lock_interruptible(&service->bulk_mutex)
+				!= 0) {
+				status = VCHIQ_RETRY;
+				goto error_exit;
+			}
+		} while (queue->local_insert == queue->remove +
+				VCHIQ_NUM_SERVICE_BULKS);
+	}
+
+	bulk = &queue->bulks[BULK_INDEX(queue->local_insert)];
+
+	bulk->mode = mode;
+	bulk->dir = dir;
+	bulk->userdata = userdata;
+	bulk->size = size;
+	bulk->actual = VCHIQ_BULK_ACTUAL_ABORTED;
+
+	if (vchiq_prepare_bulk_data(bulk, memhandle, offset, size, dir) !=
+		VCHIQ_SUCCESS)
+		goto unlock_error_exit;
+
+	wmb();
+
+	vchiq_log_info(vchiq_core_log_level,
+		"%d: bt (%d->%d) %cx %x@%x %x",
+		state->id,
+		service->localport, service->remoteport, dir_char,
+		size, (unsigned int)bulk->data, (unsigned int)userdata);
+
+	/* The slot mutex must be held when the service is being closed, so
+	   claim it here to ensure that isn't happening */
+	if (mutex_lock_interruptible(&state->slot_mutex) != 0) {
+		status = VCHIQ_RETRY;
+		goto cancel_bulk_error_exit;
+	}
+
+	if (service->srvstate != VCHIQ_SRVSTATE_OPEN)
+		goto unlock_both_error_exit;
+
+	if (state->is_master) {
+		queue->local_insert++;
+		if (resolve_bulks(service, queue))
+			request_poll(state, service,
+				(dir == VCHIQ_BULK_TRANSMIT) ?
+				VCHIQ_POLL_TXNOTIFY : VCHIQ_POLL_RXNOTIFY);
+	} else {
+		int payload[2] = { (int)bulk->data, bulk->size };
+		VCHIQ_ELEMENT_T element = { payload, sizeof(payload) };
+
+		status = queue_message(state, NULL,
+			VCHIQ_MAKE_MSG(dir_msgtype,
+				service->localport, service->remoteport),
+			&element, 1, sizeof(payload),
+			QMFLAGS_IS_BLOCKING |
+			QMFLAGS_NO_MUTEX_LOCK |
+			QMFLAGS_NO_MUTEX_UNLOCK);
+		if (status != VCHIQ_SUCCESS) {
+			goto unlock_both_error_exit;
+		}
+		queue->local_insert++;
+	}
+
+	mutex_unlock(&state->slot_mutex);
+	mutex_unlock(&service->bulk_mutex);
+
+	vchiq_log_trace(vchiq_core_log_level,
+		"%d: bt:%d %cx li=%x ri=%x p=%x",
+		state->id,
+		service->localport, dir_char,
+		queue->local_insert, queue->remote_insert, queue->process);
+
+waiting:
+	unlock_service(service);
+
+	status = VCHIQ_SUCCESS;
+
+	if (bulk_waiter) {
+		bulk_waiter->bulk = bulk;
+		if (down_interruptible(&bulk_waiter->event) != 0)
+			status = VCHIQ_RETRY;
+		else if (bulk_waiter->actual == VCHIQ_BULK_ACTUAL_ABORTED)
+			status = VCHIQ_ERROR;
+	}
+
+	return status;
+
+unlock_both_error_exit:
+	mutex_unlock(&state->slot_mutex);
+cancel_bulk_error_exit:
+	vchiq_complete_bulk(bulk);
+unlock_error_exit:
+	mutex_unlock(&service->bulk_mutex);
+
+error_exit:
+	if (service)
+		unlock_service(service);
+	return status;
+}
+
+VCHIQ_STATUS_T
+vchiq_queue_message(VCHIQ_SERVICE_HANDLE_T handle,
+	const VCHIQ_ELEMENT_T *elements, unsigned int count)
+{
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	VCHIQ_STATUS_T status = VCHIQ_ERROR;
+
+	unsigned int size = 0;
+	unsigned int i;
+
+	if (!service ||
+		(vchiq_check_service(service) != VCHIQ_SUCCESS))
+		goto error_exit;
+
+	for (i = 0; i < (unsigned int)count; i++) {
+		if (elements[i].size) {
+			if (elements[i].data == NULL) {
+				VCHIQ_SERVICE_STATS_INC(service, error_count);
+				goto error_exit;
+			}
+			size += elements[i].size;
+		}
+	}
+
+	if (size > VCHIQ_MAX_MSG_SIZE) {
+		VCHIQ_SERVICE_STATS_INC(service, error_count);
+		goto error_exit;
+	}
+
+	switch (service->srvstate) {
+	case VCHIQ_SRVSTATE_OPEN:
+		status = queue_message(service->state, service,
+				VCHIQ_MAKE_MSG(VCHIQ_MSG_DATA,
+					service->localport,
+					service->remoteport),
+				elements, count, size, 1);
+		break;
+	case VCHIQ_SRVSTATE_OPENSYNC:
+		status = queue_message_sync(service->state, service,
+				VCHIQ_MAKE_MSG(VCHIQ_MSG_DATA,
+					service->localport,
+					service->remoteport),
+				elements, count, size, 1);
+		break;
+	default:
+		status = VCHIQ_ERROR;
+		break;
+	}
+
+error_exit:
+	if (service)
+		unlock_service(service);
+
+	return status;
+}
+
+void
+vchiq_release_message(VCHIQ_SERVICE_HANDLE_T handle, VCHIQ_HEADER_T *header)
+{
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	VCHIQ_SHARED_STATE_T *remote;
+	VCHIQ_STATE_T *state;
+	int slot_index;
+
+	if (!service)
+		return;
+
+	state = service->state;
+	remote = state->remote;
+
+	slot_index = SLOT_INDEX_FROM_DATA(state, (void *)header);
+
+	if ((slot_index >= remote->slot_first) &&
+		(slot_index <= remote->slot_last)) {
+		int msgid = header->msgid;
+		if (msgid & VCHIQ_MSGID_CLAIMED) {
+			VCHIQ_SLOT_INFO_T *slot_info =
+				SLOT_INFO_FROM_INDEX(state, slot_index);
+
+			release_slot(state, slot_info, header, service);
+		}
+	} else if (slot_index == remote->slot_sync)
+		release_message_sync(state, header);
+
+	unlock_service(service);
+}
+
+static void
+release_message_sync(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header)
+{
+	header->msgid = VCHIQ_MSGID_PADDING;
+	wmb();
+	remote_event_signal(&state->remote->sync_release);
+}
+
+VCHIQ_STATUS_T
+vchiq_get_peer_version(VCHIQ_SERVICE_HANDLE_T handle, short *peer_version)
+{
+   VCHIQ_STATUS_T status = VCHIQ_ERROR;
+   VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+
+   if (!service ||
+      (vchiq_check_service(service) != VCHIQ_SUCCESS) ||
+      !peer_version)
+      goto exit;
+   *peer_version = service->peer_version;
+   status = VCHIQ_SUCCESS;
+
+exit:
+   if (service)
+      unlock_service(service);
+   return status;
+}
+
+VCHIQ_STATUS_T
+vchiq_get_config(VCHIQ_INSTANCE_T instance,
+	int config_size, VCHIQ_CONFIG_T *pconfig)
+{
+	VCHIQ_CONFIG_T config;
+
+	(void)instance;
+
+	config.max_msg_size           = VCHIQ_MAX_MSG_SIZE;
+	config.bulk_threshold         = VCHIQ_MAX_MSG_SIZE;
+	config.max_outstanding_bulks  = VCHIQ_NUM_SERVICE_BULKS;
+	config.max_services           = VCHIQ_MAX_SERVICES;
+	config.version                = VCHIQ_VERSION;
+	config.version_min            = VCHIQ_VERSION_MIN;
+
+	if (config_size > sizeof(VCHIQ_CONFIG_T))
+		return VCHIQ_ERROR;
+
+	memcpy(pconfig, &config,
+		min(config_size, (int)(sizeof(VCHIQ_CONFIG_T))));
+
+	return VCHIQ_SUCCESS;
+}
+
+VCHIQ_STATUS_T
+vchiq_set_service_option(VCHIQ_SERVICE_HANDLE_T handle,
+	VCHIQ_SERVICE_OPTION_T option, int value)
+{
+	VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
+	VCHIQ_STATUS_T status = VCHIQ_ERROR;
+
+	if (service) {
+		switch (option) {
+		case VCHIQ_SERVICE_OPTION_AUTOCLOSE:
+			service->auto_close = value;
+			status = VCHIQ_SUCCESS;
+			break;
+
+		case VCHIQ_SERVICE_OPTION_SLOT_QUOTA: {
+			VCHIQ_SERVICE_QUOTA_T *service_quota =
+				&service->state->service_quotas[
+					service->localport];
+			if (value == 0)
+				value = service->state->default_slot_quota;
+			if ((value >= service_quota->slot_use_count) &&
+				 (value < (unsigned short)~0)) {
+				service_quota->slot_quota = value;
+				if ((value >= service_quota->slot_use_count) &&
+					(service_quota->message_quota >=
+					 service_quota->message_use_count)) {
+					/* Signal the service that it may have
+					** dropped below its quota */
+					up(&service_quota->quota_event);
+				}
+				status = VCHIQ_SUCCESS;
+			}
+		} break;
+
+		case VCHIQ_SERVICE_OPTION_MESSAGE_QUOTA: {
+			VCHIQ_SERVICE_QUOTA_T *service_quota =
+				&service->state->service_quotas[
+					service->localport];
+			if (value == 0)
+				value = service->state->default_message_quota;
+			if ((value >= service_quota->message_use_count) &&
+				 (value < (unsigned short)~0)) {
+				service_quota->message_quota = value;
+				if ((value >=
+					service_quota->message_use_count) &&
+					(service_quota->slot_quota >=
+					service_quota->slot_use_count))
+					/* Signal the service that it may have
+					** dropped below its quota */
+					up(&service_quota->quota_event);
+				status = VCHIQ_SUCCESS;
+			}
+		} break;
+
+		case VCHIQ_SERVICE_OPTION_SYNCHRONOUS:
+			if ((service->srvstate == VCHIQ_SRVSTATE_HIDDEN) ||
+				(service->srvstate ==
+				VCHIQ_SRVSTATE_LISTENING)) {
+				service->sync = value;
+				status = VCHIQ_SUCCESS;
+			}
+			break;
+
+		case VCHIQ_SERVICE_OPTION_TRACE:
+			service->trace = value;
+			status = VCHIQ_SUCCESS;
+			break;
+
+		default:
+			break;
+		}
+		unlock_service(service);
+	}
+
+	return status;
+}
+
+void
+vchiq_dump_shared_state(void *dump_context, VCHIQ_STATE_T *state,
+	VCHIQ_SHARED_STATE_T *shared, const char *label)
+{
+	static const char *const debug_names[] = {
+		"<entries>",
+		"SLOT_HANDLER_COUNT",
+		"SLOT_HANDLER_LINE",
+		"PARSE_LINE",
+		"PARSE_HEADER",
+		"PARSE_MSGID",
+		"AWAIT_COMPLETION_LINE",
+		"DEQUEUE_MESSAGE_LINE",
+		"SERVICE_CALLBACK_LINE",
+		"MSG_QUEUE_FULL_COUNT",
+		"COMPLETION_QUEUE_FULL_COUNT"
+	};
+	int i;
+
+	char buf[80];
+	int len;
+	len = snprintf(buf, sizeof(buf),
+		"  %s: slots %d-%d tx_pos=%x recycle=%x",
+		label, shared->slot_first, shared->slot_last,
+		shared->tx_pos, shared->slot_queue_recycle);
+	vchiq_dump(dump_context, buf, len + 1);
+
+	len = snprintf(buf, sizeof(buf),
+		"    Slots claimed:");
+	vchiq_dump(dump_context, buf, len + 1);
+
+	for (i = shared->slot_first; i <= shared->slot_last; i++) {
+		VCHIQ_SLOT_INFO_T slot_info = *SLOT_INFO_FROM_INDEX(state, i);
+		if (slot_info.use_count != slot_info.release_count) {
+			len = snprintf(buf, sizeof(buf),
+				"      %d: %d/%d", i, slot_info.use_count,
+				slot_info.release_count);
+			vchiq_dump(dump_context, buf, len + 1);
+		}
+	}
+
+	for (i = 1; i < shared->debug[DEBUG_ENTRIES]; i++) {
+		len = snprintf(buf, sizeof(buf), "    DEBUG: %s = %d(%x)",
+			debug_names[i], shared->debug[i], shared->debug[i]);
+		vchiq_dump(dump_context, buf, len + 1);
+	}
+}
+
+void
+vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state)
+{
+	char buf[80];
+	int len;
+	int i;
+
+	len = snprintf(buf, sizeof(buf), "State %d: %s", state->id,
+		conn_state_names[state->conn_state]);
+	vchiq_dump(dump_context, buf, len + 1);
+
+	len = snprintf(buf, sizeof(buf),
+		"  tx_pos=%x(@%x), rx_pos=%x(@%x)",
+		state->local->tx_pos,
+		(uint32_t)state->tx_data +
+			(state->local_tx_pos & VCHIQ_SLOT_MASK),
+		state->rx_pos,
+		(uint32_t)state->rx_data +
+			(state->rx_pos & VCHIQ_SLOT_MASK));
+	vchiq_dump(dump_context, buf, len + 1);
+
+	len = snprintf(buf, sizeof(buf),
+		"  Version: %d (min %d)",
+		VCHIQ_VERSION, VCHIQ_VERSION_MIN);
+	vchiq_dump(dump_context, buf, len + 1);
+
+	if (VCHIQ_ENABLE_STATS) {
+		len = snprintf(buf, sizeof(buf),
+			"  Stats: ctrl_tx_count=%d, ctrl_rx_count=%d, "
+			"error_count=%d",
+			state->stats.ctrl_tx_count, state->stats.ctrl_rx_count,
+			state->stats.error_count);
+		vchiq_dump(dump_context, buf, len + 1);
+	}
+
+	len = snprintf(buf, sizeof(buf),
+		"  Slots: %d available (%d data), %d recyclable, %d stalls "
+		"(%d data)",
+		((state->slot_queue_available * VCHIQ_SLOT_SIZE) -
+			state->local_tx_pos) / VCHIQ_SLOT_SIZE,
+		state->data_quota - state->data_use_count,
+		state->local->slot_queue_recycle - state->slot_queue_available,
+		state->stats.slot_stalls, state->stats.data_stalls);
+	vchiq_dump(dump_context, buf, len + 1);
+
+	vchiq_dump_platform_state(dump_context);
+
+	vchiq_dump_shared_state(dump_context, state, state->local, "Local");
+	vchiq_dump_shared_state(dump_context, state, state->remote, "Remote");
+
+	vchiq_dump_platform_instances(dump_context);
+
+	for (i = 0; i < state->unused_service; i++) {
+		VCHIQ_SERVICE_T *service = find_service_by_port(state, i);
+
+		if (service) {
+			vchiq_dump_service_state(dump_context, service);
+			unlock_service(service);
+		}
+	}
+}
+
+void
+vchiq_dump_service_state(void *dump_context, VCHIQ_SERVICE_T *service)
+{
+	char buf[80];
+	int len;
+
+	len = snprintf(buf, sizeof(buf), "Service %d: %s (ref %u)",
+		service->localport, srvstate_names[service->srvstate],
+		service->ref_count - 1); /*Don't include the lock just taken*/
+
+	if (service->srvstate != VCHIQ_SRVSTATE_FREE) {
+		char remoteport[30];
+		VCHIQ_SERVICE_QUOTA_T *service_quota =
+			&service->state->service_quotas[service->localport];
+		int fourcc = service->base.fourcc;
+		int tx_pending, rx_pending;
+		if (service->remoteport != VCHIQ_PORT_FREE) {
+			int len2 = snprintf(remoteport, sizeof(remoteport),
+				"%d", service->remoteport);
+			if (service->public_fourcc != VCHIQ_FOURCC_INVALID)
+				snprintf(remoteport + len2,
+					sizeof(remoteport) - len2,
+					" (client %x)", service->client_id);
+		} else
+			strcpy(remoteport, "n/a");
+
+		len += snprintf(buf + len, sizeof(buf) - len,
+			" '%c%c%c%c' remote %s (msg use %d/%d, slot use %d/%d)",
+			VCHIQ_FOURCC_AS_4CHARS(fourcc),
+			remoteport,
+			service_quota->message_use_count,
+			service_quota->message_quota,
+			service_quota->slot_use_count,
+			service_quota->slot_quota);
+
+		vchiq_dump(dump_context, buf, len + 1);
+
+		tx_pending = service->bulk_tx.local_insert -
+			service->bulk_tx.remote_insert;
+
+		rx_pending = service->bulk_rx.local_insert -
+			service->bulk_rx.remote_insert;
+
+		len = snprintf(buf, sizeof(buf),
+			"  Bulk: tx_pending=%d (size %d),"
+			" rx_pending=%d (size %d)",
+			tx_pending,
+			tx_pending ? service->bulk_tx.bulks[
+			BULK_INDEX(service->bulk_tx.remove)].size : 0,
+			rx_pending,
+			rx_pending ? service->bulk_rx.bulks[
+			BULK_INDEX(service->bulk_rx.remove)].size : 0);
+
+		if (VCHIQ_ENABLE_STATS) {
+			vchiq_dump(dump_context, buf, len + 1);
+
+			len = snprintf(buf, sizeof(buf),
+				"  Ctrl: tx_count=%d, tx_bytes=%llu, "
+				"rx_count=%d, rx_bytes=%llu",
+				service->stats.ctrl_tx_count,
+				service->stats.ctrl_tx_bytes,
+				service->stats.ctrl_rx_count,
+				service->stats.ctrl_rx_bytes);
+			vchiq_dump(dump_context, buf, len + 1);
+
+			len = snprintf(buf, sizeof(buf),
+				"  Bulk: tx_count=%d, tx_bytes=%llu, "
+				"rx_count=%d, rx_bytes=%llu",
+				service->stats.bulk_tx_count,
+				service->stats.bulk_tx_bytes,
+				service->stats.bulk_rx_count,
+				service->stats.bulk_rx_bytes);
+			vchiq_dump(dump_context, buf, len + 1);
+
+			len = snprintf(buf, sizeof(buf),
+				"  %d quota stalls, %d slot stalls, "
+				"%d bulk stalls, %d aborted, %d errors",
+				service->stats.quota_stalls,
+				service->stats.slot_stalls,
+				service->stats.bulk_stalls,
+				service->stats.bulk_aborted_count,
+				service->stats.error_count);
+		 }
+	}
+
+	vchiq_dump(dump_context, buf, len + 1);
+
+	if (service->srvstate != VCHIQ_SRVSTATE_FREE)
+		vchiq_dump_platform_service_state(dump_context, service);
+}
+
+
+void
+vchiq_loud_error_header(void)
+{
+	vchiq_log_error(vchiq_core_log_level,
+		"============================================================"
+		"================");
+	vchiq_log_error(vchiq_core_log_level,
+		"============================================================"
+		"================");
+	vchiq_log_error(vchiq_core_log_level, "=====");
+}
+
+void
+vchiq_loud_error_footer(void)
+{
+	vchiq_log_error(vchiq_core_log_level, "=====");
+	vchiq_log_error(vchiq_core_log_level,
+		"============================================================"
+		"================");
+	vchiq_log_error(vchiq_core_log_level,
+		"============================================================"
+		"================");
+}
+
+
+VCHIQ_STATUS_T vchiq_send_remote_use(VCHIQ_STATE_T *state)
+{
+	VCHIQ_STATUS_T status = VCHIQ_RETRY;
+	if (state->conn_state != VCHIQ_CONNSTATE_DISCONNECTED)
+		status = queue_message(state, NULL,
+			VCHIQ_MAKE_MSG(VCHIQ_MSG_REMOTE_USE, 0, 0),
+			NULL, 0, 0, 0);
+	return status;
+}
+
+VCHIQ_STATUS_T vchiq_send_remote_release(VCHIQ_STATE_T *state)
+{
+	VCHIQ_STATUS_T status = VCHIQ_RETRY;
+	if (state->conn_state != VCHIQ_CONNSTATE_DISCONNECTED)
+		status = queue_message(state, NULL,
+			VCHIQ_MAKE_MSG(VCHIQ_MSG_REMOTE_RELEASE, 0, 0),
+			NULL, 0, 0, 0);
+	return status;
+}
+
+VCHIQ_STATUS_T vchiq_send_remote_use_active(VCHIQ_STATE_T *state)
+{
+	VCHIQ_STATUS_T status = VCHIQ_RETRY;
+	if (state->conn_state != VCHIQ_CONNSTATE_DISCONNECTED)
+		status = queue_message(state, NULL,
+			VCHIQ_MAKE_MSG(VCHIQ_MSG_REMOTE_USE_ACTIVE, 0, 0),
+			NULL, 0, 0, 0);
+	return status;
+}
+
+void vchiq_log_dump_mem(const char *label, uint32_t addr, const void *voidMem,
+	size_t numBytes)
+{
+	const uint8_t  *mem = (const uint8_t *)voidMem;
+	size_t          offset;
+	char            lineBuf[100];
+	char           *s;
+
+	while (numBytes > 0) {
+		s = lineBuf;
+
+		for (offset = 0; offset < 16; offset++) {
+			if (offset < numBytes)
+				s += snprintf(s, 4, "%02x ", mem[offset]);
+			else
+				s += snprintf(s, 4, "   ");
+		}
+
+		for (offset = 0; offset < 16; offset++) {
+			if (offset < numBytes) {
+				uint8_t ch = mem[offset];
+
+				if ((ch < ' ') || (ch > '~'))
+					ch = '.';
+				*s++ = (char)ch;
+			}
+		}
+		*s++ = '\0';
+
+		if ((label != NULL) && (*label != '\0'))
+			vchiq_log_trace(VCHIQ_LOG_TRACE,
+				"%s: %08x: %s", label, addr, lineBuf);
+		else
+			vchiq_log_trace(VCHIQ_LOG_TRACE,
+				"%08x: %s", addr, lineBuf);
+
+		addr += 16;
+		mem += 16;
+		if (numBytes > 16)
+			numBytes -= 16;
+		else
+			numBytes = 0;
+	}
+}
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,712 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_CORE_H
+#define VCHIQ_CORE_H
+
+#include <linux/mutex.h>
+#include <linux/semaphore.h>
+#include <linux/kthread.h>
+
+#include "vchiq_cfg.h"
+
+#include "vchiq.h"
+
+/* Run time control of log level, based on KERN_XXX level. */
+#define VCHIQ_LOG_DEFAULT  4
+#define VCHIQ_LOG_ERROR    3
+#define VCHIQ_LOG_WARNING  4
+#define VCHIQ_LOG_INFO     6
+#define VCHIQ_LOG_TRACE    7
+
+#define VCHIQ_LOG_PREFIX   KERN_INFO "vchiq: "
+
+#ifndef vchiq_log_error
+#define vchiq_log_error(cat, fmt, ...) \
+	do { if (cat >= VCHIQ_LOG_ERROR) \
+		printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
+#endif
+#ifndef vchiq_log_warning
+#define vchiq_log_warning(cat, fmt, ...) \
+	do { if (cat >= VCHIQ_LOG_WARNING) \
+		 printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
+#endif
+#ifndef vchiq_log_info
+#define vchiq_log_info(cat, fmt, ...) \
+	do { if (cat >= VCHIQ_LOG_INFO) \
+		printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
+#endif
+#ifndef vchiq_log_trace
+#define vchiq_log_trace(cat, fmt, ...) \
+	do { if (cat >= VCHIQ_LOG_TRACE) \
+		printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
+#endif
+
+#define vchiq_loud_error(...) \
+	vchiq_log_error(vchiq_core_log_level, "===== " __VA_ARGS__)
+
+#ifndef vchiq_static_assert
+#define vchiq_static_assert(cond) __attribute__((unused)) \
+	extern int vchiq_static_assert[(cond) ? 1 : -1]
+#endif
+
+#define IS_POW2(x) (x && ((x & (x - 1)) == 0))
+
+/* Ensure that the slot size and maximum number of slots are powers of 2 */
+vchiq_static_assert(IS_POW2(VCHIQ_SLOT_SIZE));
+vchiq_static_assert(IS_POW2(VCHIQ_MAX_SLOTS));
+vchiq_static_assert(IS_POW2(VCHIQ_MAX_SLOTS_PER_SIDE));
+
+#define VCHIQ_SLOT_MASK        (VCHIQ_SLOT_SIZE - 1)
+#define VCHIQ_SLOT_QUEUE_MASK  (VCHIQ_MAX_SLOTS_PER_SIDE - 1)
+#define VCHIQ_SLOT_ZERO_SLOTS  ((sizeof(VCHIQ_SLOT_ZERO_T) + \
+	VCHIQ_SLOT_SIZE - 1) / VCHIQ_SLOT_SIZE)
+
+#define VCHIQ_MSG_PADDING            0  /* -                                 */
+#define VCHIQ_MSG_CONNECT            1  /* -                                 */
+#define VCHIQ_MSG_OPEN               2  /* + (srcport, -), fourcc, client_id */
+#define VCHIQ_MSG_OPENACK            3  /* + (srcport, dstport)              */
+#define VCHIQ_MSG_CLOSE              4  /* + (srcport, dstport)              */
+#define VCHIQ_MSG_DATA               5  /* + (srcport, dstport)              */
+#define VCHIQ_MSG_BULK_RX            6  /* + (srcport, dstport), data, size  */
+#define VCHIQ_MSG_BULK_TX            7  /* + (srcport, dstport), data, size  */
+#define VCHIQ_MSG_BULK_RX_DONE       8  /* + (srcport, dstport), actual      */
+#define VCHIQ_MSG_BULK_TX_DONE       9  /* + (srcport, dstport), actual      */
+#define VCHIQ_MSG_PAUSE             10  /* -                                 */
+#define VCHIQ_MSG_RESUME            11  /* -                                 */
+#define VCHIQ_MSG_REMOTE_USE        12  /* -                                 */
+#define VCHIQ_MSG_REMOTE_RELEASE    13  /* -                                 */
+#define VCHIQ_MSG_REMOTE_USE_ACTIVE 14  /* -                                 */
+
+#define VCHIQ_PORT_MAX                 (VCHIQ_MAX_SERVICES - 1)
+#define VCHIQ_PORT_FREE                0x1000
+#define VCHIQ_PORT_IS_VALID(port)      (port < VCHIQ_PORT_FREE)
+#define VCHIQ_MAKE_MSG(type, srcport, dstport) \
+	((type<<24) | (srcport<<12) | (dstport<<0))
+#define VCHIQ_MSG_TYPE(msgid)          ((unsigned int)msgid >> 24)
+#define VCHIQ_MSG_SRCPORT(msgid) \
+	(unsigned short)(((unsigned int)msgid >> 12) & 0xfff)
+#define VCHIQ_MSG_DSTPORT(msgid) \
+	((unsigned short)msgid & 0xfff)
+
+#define VCHIQ_FOURCC_AS_4CHARS(fourcc)	\
+	((fourcc) >> 24) & 0xff, \
+	((fourcc) >> 16) & 0xff, \
+	((fourcc) >>  8) & 0xff, \
+	(fourcc) & 0xff
+
+/* Ensure the fields are wide enough */
+vchiq_static_assert(VCHIQ_MSG_SRCPORT(VCHIQ_MAKE_MSG(0, 0, VCHIQ_PORT_MAX))
+	== 0);
+vchiq_static_assert(VCHIQ_MSG_TYPE(VCHIQ_MAKE_MSG(0, VCHIQ_PORT_MAX, 0)) == 0);
+vchiq_static_assert((unsigned int)VCHIQ_PORT_MAX <
+	(unsigned int)VCHIQ_PORT_FREE);
+
+#define VCHIQ_MSGID_PADDING            VCHIQ_MAKE_MSG(VCHIQ_MSG_PADDING, 0, 0)
+#define VCHIQ_MSGID_CLAIMED            0x40000000
+
+#define VCHIQ_FOURCC_INVALID           0x00000000
+#define VCHIQ_FOURCC_IS_LEGAL(fourcc)  (fourcc != VCHIQ_FOURCC_INVALID)
+
+#define VCHIQ_BULK_ACTUAL_ABORTED -1
+
+typedef uint32_t BITSET_T;
+
+vchiq_static_assert((sizeof(BITSET_T) * 8) == 32);
+
+#define BITSET_SIZE(b)        ((b + 31) >> 5)
+#define BITSET_WORD(b)        (b >> 5)
+#define BITSET_BIT(b)         (1 << (b & 31))
+#define BITSET_ZERO(bs)       memset(bs, 0, sizeof(bs))
+#define BITSET_IS_SET(bs, b)  (bs[BITSET_WORD(b)] & BITSET_BIT(b))
+#define BITSET_SET(bs, b)     (bs[BITSET_WORD(b)] |= BITSET_BIT(b))
+#define BITSET_CLR(bs, b)     (bs[BITSET_WORD(b)] &= ~BITSET_BIT(b))
+
+#if VCHIQ_ENABLE_STATS
+#define VCHIQ_STATS_INC(state, stat) (state->stats. stat++)
+#define VCHIQ_SERVICE_STATS_INC(service, stat) (service->stats. stat++)
+#define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) \
+	(service->stats. stat += addend)
+#else
+#define VCHIQ_STATS_INC(state, stat) ((void)0)
+#define VCHIQ_SERVICE_STATS_INC(service, stat) ((void)0)
+#define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) ((void)0)
+#endif
+
+enum {
+	DEBUG_ENTRIES,
+#if VCHIQ_ENABLE_DEBUG
+	DEBUG_SLOT_HANDLER_COUNT,
+	DEBUG_SLOT_HANDLER_LINE,
+	DEBUG_PARSE_LINE,
+	DEBUG_PARSE_HEADER,
+	DEBUG_PARSE_MSGID,
+	DEBUG_AWAIT_COMPLETION_LINE,
+	DEBUG_DEQUEUE_MESSAGE_LINE,
+	DEBUG_SERVICE_CALLBACK_LINE,
+	DEBUG_MSG_QUEUE_FULL_COUNT,
+	DEBUG_COMPLETION_QUEUE_FULL_COUNT,
+#endif
+	DEBUG_MAX
+};
+
+#if VCHIQ_ENABLE_DEBUG
+
+#define DEBUG_INITIALISE(local) int *debug_ptr = (local)->debug;
+#define DEBUG_TRACE(d) \
+	do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(); } while (0)
+#define DEBUG_VALUE(d, v) \
+	do { debug_ptr[DEBUG_ ## d] = (v); dsb(); } while (0)
+#define DEBUG_COUNT(d) \
+	do { debug_ptr[DEBUG_ ## d]++; dsb(); } while (0)
+
+#else /* VCHIQ_ENABLE_DEBUG */
+
+#define DEBUG_INITIALISE(local)
+#define DEBUG_TRACE(d)
+#define DEBUG_VALUE(d, v)
+#define DEBUG_COUNT(d)
+
+#endif /* VCHIQ_ENABLE_DEBUG */
+
+typedef enum {
+	VCHIQ_CONNSTATE_DISCONNECTED,
+	VCHIQ_CONNSTATE_CONNECTING,
+	VCHIQ_CONNSTATE_CONNECTED,
+	VCHIQ_CONNSTATE_PAUSING,
+	VCHIQ_CONNSTATE_PAUSE_SENT,
+	VCHIQ_CONNSTATE_PAUSED,
+	VCHIQ_CONNSTATE_RESUMING,
+	VCHIQ_CONNSTATE_PAUSE_TIMEOUT,
+	VCHIQ_CONNSTATE_RESUME_TIMEOUT
+} VCHIQ_CONNSTATE_T;
+
+enum {
+	VCHIQ_SRVSTATE_FREE,
+	VCHIQ_SRVSTATE_HIDDEN,
+	VCHIQ_SRVSTATE_LISTENING,
+	VCHIQ_SRVSTATE_OPENING,
+	VCHIQ_SRVSTATE_OPEN,
+	VCHIQ_SRVSTATE_OPENSYNC,
+	VCHIQ_SRVSTATE_CLOSESENT,
+	VCHIQ_SRVSTATE_CLOSERECVD,
+	VCHIQ_SRVSTATE_CLOSEWAIT,
+	VCHIQ_SRVSTATE_CLOSED
+};
+
+enum {
+	VCHIQ_POLL_TERMINATE,
+	VCHIQ_POLL_REMOVE,
+	VCHIQ_POLL_TXNOTIFY,
+	VCHIQ_POLL_RXNOTIFY,
+	VCHIQ_POLL_COUNT
+};
+
+typedef enum {
+	VCHIQ_BULK_TRANSMIT,
+	VCHIQ_BULK_RECEIVE
+} VCHIQ_BULK_DIR_T;
+
+typedef void (*VCHIQ_USERDATA_TERM_T)(void *userdata);
+
+typedef struct vchiq_bulk_struct {
+	short mode;
+	short dir;
+	void *userdata;
+	VCHI_MEM_HANDLE_T handle;
+	void *data;
+	int size;
+	void *remote_data;
+	int remote_size;
+	int actual;
+} VCHIQ_BULK_T;
+
+typedef struct vchiq_bulk_queue_struct {
+	int local_insert;  /* Where to insert the next local bulk */
+	int remote_insert; /* Where to insert the next remote bulk (master) */
+	int process;       /* Bulk to transfer next */
+	int remote_notify; /* Bulk to notify the remote client of next (mstr) */
+	int remove;        /* Bulk to notify the local client of, and remove,
+			   ** next */
+	VCHIQ_BULK_T bulks[VCHIQ_NUM_SERVICE_BULKS];
+} VCHIQ_BULK_QUEUE_T;
+
+typedef struct remote_event_struct {
+	int armed;
+	int fired;
+	struct semaphore *event;
+} REMOTE_EVENT_T;
+
+typedef struct opaque_platform_state_t *VCHIQ_PLATFORM_STATE_T;
+
+typedef struct vchiq_state_struct VCHIQ_STATE_T;
+
+typedef struct vchiq_slot_struct {
+	char data[VCHIQ_SLOT_SIZE];
+} VCHIQ_SLOT_T;
+
+typedef struct vchiq_slot_info_struct {
+	/* Use two counters rather than one to avoid the need for a mutex. */
+	short use_count;
+	short release_count;
+} VCHIQ_SLOT_INFO_T;
+
+typedef struct vchiq_service_struct {
+	VCHIQ_SERVICE_BASE_T base;
+	VCHIQ_SERVICE_HANDLE_T handle;
+	unsigned int ref_count;
+	int srvstate;
+	VCHIQ_USERDATA_TERM_T userdata_term;
+	unsigned int localport;
+	unsigned int remoteport;
+	int public_fourcc;
+	int client_id;
+	char auto_close;
+	char sync;
+	char closing;
+	char trace;
+	atomic_t poll_flags;
+	short version;
+	short version_min;
+	short peer_version;
+
+	VCHIQ_STATE_T *state;
+	VCHIQ_INSTANCE_T instance;
+
+	int service_use_count;
+
+	VCHIQ_BULK_QUEUE_T bulk_tx;
+	VCHIQ_BULK_QUEUE_T bulk_rx;
+
+	struct semaphore remove_event;
+	struct semaphore bulk_remove_event;
+	struct mutex bulk_mutex;
+
+	struct service_stats_struct {
+		int quota_stalls;
+		int slot_stalls;
+		int bulk_stalls;
+		int error_count;
+		int ctrl_tx_count;
+		int ctrl_rx_count;
+		int bulk_tx_count;
+		int bulk_rx_count;
+		int bulk_aborted_count;
+		uint64_t ctrl_tx_bytes;
+		uint64_t ctrl_rx_bytes;
+		uint64_t bulk_tx_bytes;
+		uint64_t bulk_rx_bytes;
+	} stats;
+} VCHIQ_SERVICE_T;
+
+/* The quota information is outside VCHIQ_SERVICE_T so that it can be
+	statically allocated, since for accounting reasons a service's slot
+	usage is carried over between users of the same port number.
+ */
+typedef struct vchiq_service_quota_struct {
+	unsigned short slot_quota;
+	unsigned short slot_use_count;
+	unsigned short message_quota;
+	unsigned short message_use_count;
+	struct semaphore quota_event;
+	int previous_tx_index;
+} VCHIQ_SERVICE_QUOTA_T;
+
+typedef struct vchiq_shared_state_struct {
+
+	/* A non-zero value here indicates that the content is valid. */
+	int initialised;
+
+	/* The first and last (inclusive) slots allocated to the owner. */
+	int slot_first;
+	int slot_last;
+
+	/* The slot allocated to synchronous messages from the owner. */
+	int slot_sync;
+
+	/* Signalling this event indicates that owner's slot handler thread
+	** should run. */
+	REMOTE_EVENT_T trigger;
+
+	/* Indicates the byte position within the stream where the next message
+	** will be written. The least significant bits are an index into the
+	** slot. The next bits are the index of the slot in slot_queue. */
+	int tx_pos;
+
+	/* This event should be signalled when a slot is recycled. */
+	REMOTE_EVENT_T recycle;
+
+	/* The slot_queue index where the next recycled slot will be written. */
+	int slot_queue_recycle;
+
+	/* This event should be signalled when a synchronous message is sent. */
+	REMOTE_EVENT_T sync_trigger;
+
+	/* This event should be signalled when a synchronous message has been
+	** released. */
+	REMOTE_EVENT_T sync_release;
+
+	/* A circular buffer of slot indexes. */
+	int slot_queue[VCHIQ_MAX_SLOTS_PER_SIDE];
+
+	/* Debugging state */
+	int debug[DEBUG_MAX];
+} VCHIQ_SHARED_STATE_T;
+
+typedef struct vchiq_slot_zero_struct {
+	int magic;
+	short version;
+	short version_min;
+	int slot_zero_size;
+	int slot_size;
+	int max_slots;
+	int max_slots_per_side;
+	int platform_data[2];
+	VCHIQ_SHARED_STATE_T master;
+	VCHIQ_SHARED_STATE_T slave;
+	VCHIQ_SLOT_INFO_T slots[VCHIQ_MAX_SLOTS];
+} VCHIQ_SLOT_ZERO_T;
+
+struct vchiq_state_struct {
+	int id;
+	int initialised;
+	VCHIQ_CONNSTATE_T conn_state;
+	int is_master;
+	short version_common;
+
+	VCHIQ_SHARED_STATE_T *local;
+	VCHIQ_SHARED_STATE_T *remote;
+	VCHIQ_SLOT_T *slot_data;
+
+	unsigned short default_slot_quota;
+	unsigned short default_message_quota;
+
+	/* Event indicating connect message received */
+	struct semaphore connect;
+
+	/* Mutex protecting services */
+	struct mutex mutex;
+	VCHIQ_INSTANCE_T *instance;
+
+	/* Processes incoming messages */
+	struct task_struct *slot_handler_thread;
+
+	/* Processes recycled slots */
+	struct task_struct *recycle_thread;
+
+	/* Processes synchronous messages */
+	struct task_struct *sync_thread;
+
+	/* Local implementation of the trigger remote event */
+	struct semaphore trigger_event;
+
+	/* Local implementation of the recycle remote event */
+	struct semaphore recycle_event;
+
+	/* Local implementation of the sync trigger remote event */
+	struct semaphore sync_trigger_event;
+
+	/* Local implementation of the sync release remote event */
+	struct semaphore sync_release_event;
+
+	char *tx_data;
+	char *rx_data;
+	VCHIQ_SLOT_INFO_T *rx_info;
+
+	struct mutex slot_mutex;
+
+	struct mutex recycle_mutex;
+
+	struct mutex sync_mutex;
+
+	struct mutex bulk_transfer_mutex;
+
+	/* Indicates the byte position within the stream from where the next
+	** message will be read. The least significant bits are an index into
+	** the slot.The next bits are the index of the slot in
+	** remote->slot_queue. */
+	int rx_pos;
+
+	/* A cached copy of local->tx_pos. Only write to local->tx_pos, and read
+		from remote->tx_pos. */
+	int local_tx_pos;
+
+	/* The slot_queue index of the slot to become available next. */
+	int slot_queue_available;
+
+	/* A flag to indicate if any poll has been requested */
+	int poll_needed;
+
+	/* Ths index of the previous slot used for data messages. */
+	int previous_data_index;
+
+	/* The number of slots occupied by data messages. */
+	unsigned short data_use_count;
+
+	/* The maximum number of slots to be occupied by data messages. */
+	unsigned short data_quota;
+
+	/* An array of bit sets indicating which services must be polled. */
+	atomic_t poll_services[BITSET_SIZE(VCHIQ_MAX_SERVICES)];
+
+	/* The number of the first unused service */
+	int unused_service;
+
+	/* Signalled when a free slot becomes available. */
+	struct semaphore slot_available_event;
+
+	struct semaphore slot_remove_event;
+
+	/* Signalled when a free data slot becomes available. */
+	struct semaphore data_quota_event;
+
+	/* Incremented when there are bulk transfers which cannot be processed
+	 * whilst paused and must be processed on resume */
+	int deferred_bulks;
+
+	struct state_stats_struct {
+		int slot_stalls;
+		int data_stalls;
+		int ctrl_tx_count;
+		int ctrl_rx_count;
+		int error_count;
+	} stats;
+
+	VCHIQ_SERVICE_T * services[VCHIQ_MAX_SERVICES];
+	VCHIQ_SERVICE_QUOTA_T service_quotas[VCHIQ_MAX_SERVICES];
+	VCHIQ_SLOT_INFO_T slot_info[VCHIQ_MAX_SLOTS];
+
+	VCHIQ_PLATFORM_STATE_T platform_state;
+};
+
+struct bulk_waiter {
+	VCHIQ_BULK_T *bulk;
+	struct semaphore event;
+	int actual;
+};
+
+extern spinlock_t bulk_waiter_spinlock;
+
+extern int vchiq_core_log_level;
+extern int vchiq_core_msg_log_level;
+extern int vchiq_sync_log_level;
+
+extern VCHIQ_STATE_T *vchiq_states[VCHIQ_MAX_STATES];
+
+extern const char *
+get_conn_state_name(VCHIQ_CONNSTATE_T conn_state);
+
+extern VCHIQ_SLOT_ZERO_T *
+vchiq_init_slots(void *mem_base, int mem_size);
+
+extern VCHIQ_STATUS_T
+vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero,
+	int is_master);
+
+extern VCHIQ_STATUS_T
+vchiq_connect_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance);
+
+extern VCHIQ_SERVICE_T *
+vchiq_add_service_internal(VCHIQ_STATE_T *state,
+	const VCHIQ_SERVICE_PARAMS_T *params, int srvstate,
+	VCHIQ_INSTANCE_T instance, VCHIQ_USERDATA_TERM_T userdata_term);
+
+extern VCHIQ_STATUS_T
+vchiq_open_service_internal(VCHIQ_SERVICE_T *service, int client_id);
+
+extern VCHIQ_STATUS_T
+vchiq_close_service_internal(VCHIQ_SERVICE_T *service, int close_recvd);
+
+extern void
+vchiq_terminate_service_internal(VCHIQ_SERVICE_T *service);
+
+extern void
+vchiq_free_service_internal(VCHIQ_SERVICE_T *service);
+
+extern VCHIQ_STATUS_T
+vchiq_shutdown_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance);
+
+extern VCHIQ_STATUS_T
+vchiq_pause_internal(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_resume_internal(VCHIQ_STATE_T *state);
+
+extern void
+remote_event_pollall(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
+	VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
+	VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir);
+
+extern void
+vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state);
+
+extern void
+vchiq_dump_service_state(void *dump_context, VCHIQ_SERVICE_T *service);
+
+extern void
+vchiq_loud_error_header(void);
+
+extern void
+vchiq_loud_error_footer(void);
+
+extern void
+request_poll(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int poll_type);
+
+static inline VCHIQ_SERVICE_T *
+handle_to_service(VCHIQ_SERVICE_HANDLE_T handle)
+{
+	VCHIQ_STATE_T *state = vchiq_states[(handle / VCHIQ_MAX_SERVICES) &
+		(VCHIQ_MAX_STATES - 1)];
+	if (!state)
+		return NULL;
+
+	return state->services[handle & (VCHIQ_MAX_SERVICES - 1)];
+}
+
+extern VCHIQ_SERVICE_T *
+find_service_by_handle(VCHIQ_SERVICE_HANDLE_T handle);
+
+extern VCHIQ_SERVICE_T *
+find_service_by_port(VCHIQ_STATE_T *state, int localport);
+
+extern VCHIQ_SERVICE_T *
+find_service_for_instance(VCHIQ_INSTANCE_T instance,
+	VCHIQ_SERVICE_HANDLE_T handle);
+
+extern VCHIQ_SERVICE_T *
+find_closed_service_for_instance(VCHIQ_INSTANCE_T instance,
+	VCHIQ_SERVICE_HANDLE_T handle);
+
+extern VCHIQ_SERVICE_T *
+next_service_by_instance(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance,
+	int *pidx);
+
+extern void
+lock_service(VCHIQ_SERVICE_T *service);
+
+extern void
+unlock_service(VCHIQ_SERVICE_T *service);
+
+/* The following functions are called from vchiq_core, and external
+** implementations must be provided. */
+
+extern VCHIQ_STATUS_T
+vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk,
+	VCHI_MEM_HANDLE_T memhandle, void *offset, int size, int dir);
+
+extern void
+vchiq_transfer_bulk(VCHIQ_BULK_T *bulk);
+
+extern void
+vchiq_complete_bulk(VCHIQ_BULK_T *bulk);
+
+extern VCHIQ_STATUS_T
+vchiq_copy_from_user(void *dst, const void *src, int size);
+
+extern void
+remote_event_signal(REMOTE_EVENT_T *event);
+
+void
+vchiq_platform_check_suspend(VCHIQ_STATE_T *state);
+
+extern void
+vchiq_platform_paused(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_platform_resume(VCHIQ_STATE_T *state);
+
+extern void
+vchiq_platform_resumed(VCHIQ_STATE_T *state);
+
+extern void
+vchiq_dump(void *dump_context, const char *str, int len);
+
+extern void
+vchiq_dump_platform_state(void *dump_context);
+
+extern void
+vchiq_dump_platform_instances(void *dump_context);
+
+extern void
+vchiq_dump_platform_service_state(void *dump_context,
+	VCHIQ_SERVICE_T *service);
+
+extern VCHIQ_STATUS_T
+vchiq_use_service_internal(VCHIQ_SERVICE_T *service);
+
+extern VCHIQ_STATUS_T
+vchiq_release_service_internal(VCHIQ_SERVICE_T *service);
+
+extern void
+vchiq_on_remote_use(VCHIQ_STATE_T *state);
+
+extern void
+vchiq_on_remote_release(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_platform_init_state(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_check_service(VCHIQ_SERVICE_T *service);
+
+extern void
+vchiq_on_remote_use_active(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_send_remote_use(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_send_remote_release(VCHIQ_STATE_T *state);
+
+extern VCHIQ_STATUS_T
+vchiq_send_remote_use_active(VCHIQ_STATE_T *state);
+
+extern void
+vchiq_platform_conn_state_changed(VCHIQ_STATE_T *state,
+	VCHIQ_CONNSTATE_T oldstate, VCHIQ_CONNSTATE_T newstate);
+
+extern void
+vchiq_platform_handle_timeout(VCHIQ_STATE_T *state);
+
+extern void
+vchiq_set_conn_state(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T newstate);
+
+
+extern void
+vchiq_log_dump_mem(const char *label, uint32_t addr, const void *voidMem,
+	size_t numBytes);
+
+#endif
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_debugfs.c linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_debugfs.c
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_debugfs.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_debugfs.c	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,383 @@
+/**
+ * Copyright (c) 2014 Raspberry Pi (Trading) Ltd. All rights reserved.
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <linux/debugfs.h>
+#include "vchiq_core.h"
+#include "vchiq_arm.h"
+#include "vchiq_debugfs.h"
+
+#ifdef CONFIG_DEBUG_FS
+
+/****************************************************************************
+*
+*   log category entries
+*
+***************************************************************************/
+#define DEBUGFS_WRITE_BUF_SIZE 256
+
+#define VCHIQ_LOG_ERROR_STR   "error"
+#define VCHIQ_LOG_WARNING_STR "warning"
+#define VCHIQ_LOG_INFO_STR    "info"
+#define VCHIQ_LOG_TRACE_STR   "trace"
+
+
+/* Top-level debug info */
+struct vchiq_debugfs_info {
+	/* Global 'vchiq' debugfs entry used by all instances */
+	struct dentry *vchiq_cfg_dir;
+
+	/* one entry per client process */
+	struct dentry *clients;
+
+	/* log categories */
+	struct dentry *log_categories;
+};
+
+static struct vchiq_debugfs_info debugfs_info;
+
+/* Log category debugfs entries */
+struct vchiq_debugfs_log_entry {
+	const char *name;
+	int *plevel;
+	struct dentry *dir;
+};
+
+static struct vchiq_debugfs_log_entry vchiq_debugfs_log_entries[] = {
+	{ "core", &vchiq_core_log_level },
+	{ "msg",  &vchiq_core_msg_log_level },
+	{ "sync", &vchiq_sync_log_level },
+	{ "susp", &vchiq_susp_log_level },
+	{ "arm",  &vchiq_arm_log_level },
+};
+static int n_log_entries =
+	sizeof(vchiq_debugfs_log_entries)/sizeof(vchiq_debugfs_log_entries[0]);
+
+
+static struct dentry *vchiq_clients_top(void);
+static struct dentry *vchiq_debugfs_top(void);
+
+static int debugfs_log_show(struct seq_file *f, void *offset)
+{
+	int *levp = f->private;
+	char *log_value = NULL;
+
+	switch (*levp) {
+	case VCHIQ_LOG_ERROR:
+		log_value = VCHIQ_LOG_ERROR_STR;
+		break;
+	case VCHIQ_LOG_WARNING:
+		log_value = VCHIQ_LOG_WARNING_STR;
+		break;
+	case VCHIQ_LOG_INFO:
+		log_value = VCHIQ_LOG_INFO_STR;
+		break;
+	case VCHIQ_LOG_TRACE:
+		log_value = VCHIQ_LOG_TRACE_STR;
+		break;
+	default:
+		break;
+	}
+
+	seq_printf(f, "%s\n", log_value ? log_value : "(null)");
+
+	return 0;
+}
+
+static int debugfs_log_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debugfs_log_show, inode->i_private);
+}
+
+static int debugfs_log_write(struct file *file,
+	const char __user *buffer,
+	size_t count, loff_t *ppos)
+{
+	struct seq_file *f = (struct seq_file *)file->private_data;
+	int *levp = f->private;
+	char kbuf[DEBUGFS_WRITE_BUF_SIZE + 1];
+
+	memset(kbuf, 0, DEBUGFS_WRITE_BUF_SIZE + 1);
+	if (count >= DEBUGFS_WRITE_BUF_SIZE)
+		count = DEBUGFS_WRITE_BUF_SIZE;
+
+	if (copy_from_user(kbuf, buffer, count) != 0)
+		return -EFAULT;
+	kbuf[count - 1] = 0;
+
+	if (strncmp("error", kbuf, strlen("error")) == 0)
+		*levp = VCHIQ_LOG_ERROR;
+	else if (strncmp("warning", kbuf, strlen("warning")) == 0)
+		*levp = VCHIQ_LOG_WARNING;
+	else if (strncmp("info", kbuf, strlen("info")) == 0)
+		*levp = VCHIQ_LOG_INFO;
+	else if (strncmp("trace", kbuf, strlen("trace")) == 0)
+		*levp = VCHIQ_LOG_TRACE;
+	else
+		*levp = VCHIQ_LOG_DEFAULT;
+
+	*ppos += count;
+
+	return count;
+}
+
+static const struct file_operations debugfs_log_fops = {
+	.owner		= THIS_MODULE,
+	.open		= debugfs_log_open,
+	.write		= debugfs_log_write,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+/* create an entry under <debugfs>/vchiq/log for each log category */
+static int vchiq_debugfs_create_log_entries(struct dentry *top)
+{
+	struct dentry *dir;
+	size_t i;
+	int ret = 0;
+	dir = debugfs_create_dir("log", vchiq_debugfs_top());
+	if (!dir)
+		return -ENOMEM;
+	debugfs_info.log_categories = dir;
+
+	for (i = 0; i < n_log_entries; i++) {
+		void *levp = (void *)vchiq_debugfs_log_entries[i].plevel;
+		dir = debugfs_create_file(vchiq_debugfs_log_entries[i].name,
+					  0644,
+					  debugfs_info.log_categories,
+					  levp,
+					  &debugfs_log_fops);
+		if (!dir) {
+			ret = -ENOMEM;
+			break;
+		}
+
+		vchiq_debugfs_log_entries[i].dir = dir;
+	}
+	return ret;
+}
+
+static int debugfs_usecount_show(struct seq_file *f, void *offset)
+{
+	VCHIQ_INSTANCE_T instance = f->private;
+	int use_count;
+
+	use_count = vchiq_instance_get_use_count(instance);
+	seq_printf(f, "%d\n", use_count);
+
+	return 0;
+}
+
+static int debugfs_usecount_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debugfs_usecount_show, inode->i_private);
+}
+
+static const struct file_operations debugfs_usecount_fops = {
+	.owner		= THIS_MODULE,
+	.open		= debugfs_usecount_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static int debugfs_trace_show(struct seq_file *f, void *offset)
+{
+	VCHIQ_INSTANCE_T instance = f->private;
+	int trace;
+
+	trace = vchiq_instance_get_trace(instance);
+	seq_printf(f, "%s\n", trace ? "Y" : "N");
+
+	return 0;
+}
+
+static int debugfs_trace_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debugfs_trace_show, inode->i_private);
+}
+
+static int debugfs_trace_write(struct file *file,
+	const char __user *buffer,
+	size_t count, loff_t *ppos)
+{
+	struct seq_file *f = (struct seq_file *)file->private_data;
+	VCHIQ_INSTANCE_T instance = f->private;
+	char firstchar;
+
+	if (copy_from_user(&firstchar, buffer, 1) != 0)
+		return -EFAULT;
+
+	switch (firstchar) {
+	case 'Y':
+	case 'y':
+	case '1':
+		vchiq_instance_set_trace(instance, 1);
+		break;
+	case 'N':
+	case 'n':
+	case '0':
+		vchiq_instance_set_trace(instance, 0);
+		break;
+	default:
+		break;
+	}
+
+	*ppos += count;
+
+	return count;
+}
+
+static const struct file_operations debugfs_trace_fops = {
+	.owner		= THIS_MODULE,
+	.open		= debugfs_trace_open,
+	.write		= debugfs_trace_write,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+/* add an instance (process) to the debugfs entries */
+int vchiq_debugfs_add_instance(VCHIQ_INSTANCE_T instance)
+{
+	char pidstr[16];
+	struct dentry *top, *use_count, *trace;
+	struct dentry *clients = vchiq_clients_top();
+
+	snprintf(pidstr, sizeof(pidstr), "%d",
+		 vchiq_instance_get_pid(instance));
+
+	top = debugfs_create_dir(pidstr, clients);
+	if (!top)
+		goto fail_top;
+
+	use_count = debugfs_create_file("use_count",
+					0444, top,
+					instance,
+					&debugfs_usecount_fops);
+	if (!use_count)
+		goto fail_use_count;
+
+	trace = debugfs_create_file("trace",
+				    0644, top,
+				    instance,
+				    &debugfs_trace_fops);
+	if (!trace)
+		goto fail_trace;
+
+	vchiq_instance_get_debugfs_node(instance)->dentry = top;
+
+	return 0;
+
+fail_trace:
+	debugfs_remove(use_count);
+fail_use_count:
+	debugfs_remove(top);
+fail_top:
+	return -ENOMEM;
+}
+
+void vchiq_debugfs_remove_instance(VCHIQ_INSTANCE_T instance)
+{
+	VCHIQ_DEBUGFS_NODE_T *node = vchiq_instance_get_debugfs_node(instance);
+	debugfs_remove_recursive(node->dentry);
+}
+
+
+int vchiq_debugfs_init(void)
+{
+	BUG_ON(debugfs_info.vchiq_cfg_dir != NULL);
+
+	debugfs_info.vchiq_cfg_dir = debugfs_create_dir("vchiq", NULL);
+	if (debugfs_info.vchiq_cfg_dir == NULL)
+		goto fail;
+
+	debugfs_info.clients = debugfs_create_dir("clients",
+				vchiq_debugfs_top());
+	if (!debugfs_info.clients)
+		goto fail;
+
+	if (vchiq_debugfs_create_log_entries(vchiq_debugfs_top()) != 0)
+		goto fail;
+
+	return 0;
+
+fail:
+	vchiq_debugfs_deinit();
+	vchiq_log_error(vchiq_arm_log_level,
+		"%s: failed to create debugfs directory",
+		__func__);
+
+	return -ENOMEM;
+}
+
+/* remove all the debugfs entries */
+void vchiq_debugfs_deinit(void)
+{
+	debugfs_remove_recursive(vchiq_debugfs_top());
+}
+
+static struct dentry *vchiq_clients_top(void)
+{
+	return debugfs_info.clients;
+}
+
+static struct dentry *vchiq_debugfs_top(void)
+{
+	BUG_ON(debugfs_info.vchiq_cfg_dir == NULL);
+	return debugfs_info.vchiq_cfg_dir;
+}
+
+#else /* CONFIG_DEBUG_FS */
+
+int vchiq_debugfs_init(void)
+{
+	return 0;
+}
+
+void vchiq_debugfs_deinit(void)
+{
+}
+
+int vchiq_debugfs_add_instance(VCHIQ_INSTANCE_T instance)
+{
+	return 0;
+}
+
+void vchiq_debugfs_remove_instance(VCHIQ_INSTANCE_T instance)
+{
+}
+
+#endif /* CONFIG_DEBUG_FS */
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_debugfs.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_debugfs.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_debugfs.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_debugfs.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,52 @@
+/**
+ * Copyright (c) 2014 Raspberry Pi (Trading) Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_DEBUGFS_H
+#define VCHIQ_DEBUGFS_H
+
+#include "vchiq_core.h"
+
+typedef struct vchiq_debugfs_node_struct
+{
+    struct dentry *dentry;
+} VCHIQ_DEBUGFS_NODE_T;
+
+int vchiq_debugfs_init(void);
+
+void vchiq_debugfs_deinit(void);
+
+int vchiq_debugfs_add_instance(VCHIQ_INSTANCE_T instance);
+
+void vchiq_debugfs_remove_instance(VCHIQ_INSTANCE_T instance);
+
+#endif /* VCHIQ_DEBUGFS_H */
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_genversion linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_genversion
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_genversion	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_genversion	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,87 @@
+#!/usr/bin/perl -w
+
+use strict;
+
+#
+# Generate a version from available information
+#
+
+my $prefix = shift @ARGV;
+my $root = shift @ARGV;
+
+
+if ( not defined $root ) {
+	die "usage: $0 prefix root-dir\n";
+}
+
+if ( ! -d $root ) {
+	die "root directory $root not found\n";
+}
+
+my $version = "unknown";
+my $tainted = "";
+
+if ( -d "$root/.git" ) {
+	# attempt to work out git version. only do so
+	# on a linux build host, as cygwin builds are
+	# already slow enough
+
+	if ( -f "/usr/bin/git" || -f "/usr/local/bin/git" ) {
+		if (not open(F, "git --git-dir $root/.git rev-parse --verify HEAD|")) {
+			$version = "no git version";
+		}
+		else {
+			$version = <F>;
+			$version =~ s/[ \r\n]*$//;     # chomp may not be enough (cygwin).
+			$version =~ s/^[ \r\n]*//;     # chomp may not be enough (cygwin).
+		}
+
+		if (open(G, "git --git-dir $root/.git status --porcelain|")) {
+			$tainted = <G>;
+			$tainted =~ s/[ \r\n]*$//;     # chomp may not be enough (cygwin).
+			$tainted =~ s/^[ \r\n]*//;     # chomp may not be enough (cygwin).
+			if (length $tainted) {
+			$version = join ' ', $version, "(tainted)";
+		}
+		else {
+			$version = join ' ', $version, "(clean)";
+         }
+		}
+	}
+}
+
+my $hostname = `hostname`;
+$hostname =~ s/[ \r\n]*$//;     # chomp may not be enough (cygwin).
+$hostname =~ s/^[ \r\n]*//;     # chomp may not be enough (cygwin).
+
+
+print STDERR "Version $version\n";
+print <<EOF;
+#include "${prefix}_build_info.h"
+#include <linux/broadcom/vc_debug_sym.h>
+
+VC_DEBUG_DECLARE_STRING_VAR( ${prefix}_build_hostname, "$hostname" );
+VC_DEBUG_DECLARE_STRING_VAR( ${prefix}_build_version, "$version" );
+VC_DEBUG_DECLARE_STRING_VAR( ${prefix}_build_time,    __TIME__ );
+VC_DEBUG_DECLARE_STRING_VAR( ${prefix}_build_date,    __DATE__ );
+
+const char *vchiq_get_build_hostname( void )
+{
+   return vchiq_build_hostname;
+}
+
+const char *vchiq_get_build_version( void )
+{
+   return vchiq_build_version;
+}
+
+const char *vchiq_get_build_date( void )
+{
+   return vchiq_build_date;
+}
+
+const char *vchiq_get_build_time( void )
+{
+   return vchiq_build_time;
+}
+EOF
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_VCHIQ_H
+#define VCHIQ_VCHIQ_H
+
+#include "vchiq_if.h"
+#include "vchiq_util.h"
+
+#endif
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,189 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_IF_H
+#define VCHIQ_IF_H
+
+#include "interface/vchi/vchi_mh.h"
+
+#define VCHIQ_SERVICE_HANDLE_INVALID 0
+
+#define VCHIQ_SLOT_SIZE     4096
+#define VCHIQ_MAX_MSG_SIZE  (VCHIQ_SLOT_SIZE - sizeof(VCHIQ_HEADER_T))
+#define VCHIQ_CHANNEL_SIZE  VCHIQ_MAX_MSG_SIZE /* For backwards compatibility */
+
+#define VCHIQ_MAKE_FOURCC(x0, x1, x2, x3) \
+			(((x0) << 24) | ((x1) << 16) | ((x2) << 8) | (x3))
+#define VCHIQ_GET_SERVICE_USERDATA(service) vchiq_get_service_userdata(service)
+#define VCHIQ_GET_SERVICE_FOURCC(service)   vchiq_get_service_fourcc(service)
+
+typedef enum {
+	VCHIQ_SERVICE_OPENED,         /* service, -, -             */
+	VCHIQ_SERVICE_CLOSED,         /* service, -, -             */
+	VCHIQ_MESSAGE_AVAILABLE,      /* service, header, -        */
+	VCHIQ_BULK_TRANSMIT_DONE,     /* service, -, bulk_userdata */
+	VCHIQ_BULK_RECEIVE_DONE,      /* service, -, bulk_userdata */
+	VCHIQ_BULK_TRANSMIT_ABORTED,  /* service, -, bulk_userdata */
+	VCHIQ_BULK_RECEIVE_ABORTED    /* service, -, bulk_userdata */
+} VCHIQ_REASON_T;
+
+typedef enum {
+	VCHIQ_ERROR   = -1,
+	VCHIQ_SUCCESS = 0,
+	VCHIQ_RETRY   = 1
+} VCHIQ_STATUS_T;
+
+typedef enum {
+	VCHIQ_BULK_MODE_CALLBACK,
+	VCHIQ_BULK_MODE_BLOCKING,
+	VCHIQ_BULK_MODE_NOCALLBACK,
+	VCHIQ_BULK_MODE_WAITING		/* Reserved for internal use */
+} VCHIQ_BULK_MODE_T;
+
+typedef enum {
+	VCHIQ_SERVICE_OPTION_AUTOCLOSE,
+	VCHIQ_SERVICE_OPTION_SLOT_QUOTA,
+	VCHIQ_SERVICE_OPTION_MESSAGE_QUOTA,
+	VCHIQ_SERVICE_OPTION_SYNCHRONOUS,
+	VCHIQ_SERVICE_OPTION_TRACE
+} VCHIQ_SERVICE_OPTION_T;
+
+typedef struct vchiq_header_struct {
+	/* The message identifier - opaque to applications. */
+	int msgid;
+
+	/* Size of message data. */
+	unsigned int size;
+
+	char data[0];           /* message */
+} VCHIQ_HEADER_T;
+
+typedef struct {
+	const void *data;
+	unsigned int size;
+} VCHIQ_ELEMENT_T;
+
+typedef unsigned int VCHIQ_SERVICE_HANDLE_T;
+
+typedef VCHIQ_STATUS_T (*VCHIQ_CALLBACK_T)(VCHIQ_REASON_T, VCHIQ_HEADER_T *,
+	VCHIQ_SERVICE_HANDLE_T, void *);
+
+typedef struct vchiq_service_base_struct {
+	int fourcc;
+	VCHIQ_CALLBACK_T callback;
+	void *userdata;
+} VCHIQ_SERVICE_BASE_T;
+
+typedef struct vchiq_service_params_struct {
+	int fourcc;
+	VCHIQ_CALLBACK_T callback;
+	void *userdata;
+	short version;       /* Increment for non-trivial changes */
+	short version_min;   /* Update for incompatible changes */
+} VCHIQ_SERVICE_PARAMS_T;
+
+typedef struct vchiq_config_struct {
+	unsigned int max_msg_size;
+	unsigned int bulk_threshold; /* The message size above which it
+					is better to use a bulk transfer
+					(<= max_msg_size) */
+	unsigned int max_outstanding_bulks;
+	unsigned int max_services;
+	short version;      /* The version of VCHIQ */
+	short version_min;  /* The minimum compatible version of VCHIQ */
+} VCHIQ_CONFIG_T;
+
+typedef struct vchiq_instance_struct *VCHIQ_INSTANCE_T;
+typedef void (*VCHIQ_REMOTE_USE_CALLBACK_T)(void *cb_arg);
+
+extern VCHIQ_STATUS_T vchiq_initialise(VCHIQ_INSTANCE_T *pinstance);
+extern VCHIQ_STATUS_T vchiq_shutdown(VCHIQ_INSTANCE_T instance);
+extern VCHIQ_STATUS_T vchiq_connect(VCHIQ_INSTANCE_T instance);
+extern VCHIQ_STATUS_T vchiq_add_service(VCHIQ_INSTANCE_T instance,
+	const VCHIQ_SERVICE_PARAMS_T *params,
+	VCHIQ_SERVICE_HANDLE_T *pservice);
+extern VCHIQ_STATUS_T vchiq_open_service(VCHIQ_INSTANCE_T instance,
+	const VCHIQ_SERVICE_PARAMS_T *params,
+	VCHIQ_SERVICE_HANDLE_T *pservice);
+extern VCHIQ_STATUS_T vchiq_close_service(VCHIQ_SERVICE_HANDLE_T service);
+extern VCHIQ_STATUS_T vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T service);
+extern VCHIQ_STATUS_T vchiq_use_service(VCHIQ_SERVICE_HANDLE_T service);
+extern VCHIQ_STATUS_T vchiq_use_service_no_resume(
+	VCHIQ_SERVICE_HANDLE_T service);
+extern VCHIQ_STATUS_T vchiq_release_service(VCHIQ_SERVICE_HANDLE_T service);
+
+extern VCHIQ_STATUS_T vchiq_queue_message(VCHIQ_SERVICE_HANDLE_T service,
+	const VCHIQ_ELEMENT_T *elements, unsigned int count);
+extern void           vchiq_release_message(VCHIQ_SERVICE_HANDLE_T service,
+	VCHIQ_HEADER_T *header);
+extern VCHIQ_STATUS_T vchiq_queue_bulk_transmit(VCHIQ_SERVICE_HANDLE_T service,
+	const void *data, unsigned int size, void *userdata);
+extern VCHIQ_STATUS_T vchiq_queue_bulk_receive(VCHIQ_SERVICE_HANDLE_T service,
+	void *data, unsigned int size, void *userdata);
+extern VCHIQ_STATUS_T vchiq_queue_bulk_transmit_handle(
+	VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle,
+	const void *offset, unsigned int size, void *userdata);
+extern VCHIQ_STATUS_T vchiq_queue_bulk_receive_handle(
+	VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle,
+	void *offset, unsigned int size, void *userdata);
+extern VCHIQ_STATUS_T vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T service,
+	const void *data, unsigned int size, void *userdata,
+	VCHIQ_BULK_MODE_T mode);
+extern VCHIQ_STATUS_T vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T service,
+	void *data, unsigned int size, void *userdata,
+	VCHIQ_BULK_MODE_T mode);
+extern VCHIQ_STATUS_T vchiq_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T service,
+	VCHI_MEM_HANDLE_T handle, const void *offset, unsigned int size,
+	void *userdata,	VCHIQ_BULK_MODE_T mode);
+extern VCHIQ_STATUS_T vchiq_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T service,
+	VCHI_MEM_HANDLE_T handle, void *offset, unsigned int size,
+	void *userdata, VCHIQ_BULK_MODE_T mode);
+extern int   vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T service);
+extern void *vchiq_get_service_userdata(VCHIQ_SERVICE_HANDLE_T service);
+extern int   vchiq_get_service_fourcc(VCHIQ_SERVICE_HANDLE_T service);
+extern VCHIQ_STATUS_T vchiq_get_config(VCHIQ_INSTANCE_T instance,
+	int config_size, VCHIQ_CONFIG_T *pconfig);
+extern VCHIQ_STATUS_T vchiq_set_service_option(VCHIQ_SERVICE_HANDLE_T service,
+	VCHIQ_SERVICE_OPTION_T option, int value);
+
+extern VCHIQ_STATUS_T vchiq_remote_use(VCHIQ_INSTANCE_T instance,
+	VCHIQ_REMOTE_USE_CALLBACK_T callback, void *cb_arg);
+extern VCHIQ_STATUS_T vchiq_remote_release(VCHIQ_INSTANCE_T instance);
+
+extern VCHIQ_STATUS_T vchiq_dump_phys_mem(VCHIQ_SERVICE_HANDLE_T service,
+	void *ptr, size_t num_bytes);
+
+extern VCHIQ_STATUS_T vchiq_get_peer_version(VCHIQ_SERVICE_HANDLE_T handle,
+      short *peer_version);
+
+#endif /* VCHIQ_IF_H */
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,131 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_IOCTLS_H
+#define VCHIQ_IOCTLS_H
+
+#include <linux/ioctl.h>
+#include "vchiq_if.h"
+
+#define VCHIQ_IOC_MAGIC 0xc4
+#define VCHIQ_INVALID_HANDLE (~0)
+
+typedef struct {
+	VCHIQ_SERVICE_PARAMS_T params;
+	int is_open;
+	int is_vchi;
+	unsigned int handle;       /* OUT */
+} VCHIQ_CREATE_SERVICE_T;
+
+typedef struct {
+	unsigned int handle;
+	unsigned int count;
+	const VCHIQ_ELEMENT_T *elements;
+} VCHIQ_QUEUE_MESSAGE_T;
+
+typedef struct {
+	unsigned int handle;
+	void *data;
+	unsigned int size;
+	void *userdata;
+	VCHIQ_BULK_MODE_T mode;
+} VCHIQ_QUEUE_BULK_TRANSFER_T;
+
+typedef struct {
+	VCHIQ_REASON_T reason;
+	VCHIQ_HEADER_T *header;
+	void *service_userdata;
+	void *bulk_userdata;
+} VCHIQ_COMPLETION_DATA_T;
+
+typedef struct {
+	unsigned int count;
+	VCHIQ_COMPLETION_DATA_T *buf;
+	unsigned int msgbufsize;
+	unsigned int msgbufcount; /* IN/OUT */
+	void **msgbufs;
+} VCHIQ_AWAIT_COMPLETION_T;
+
+typedef struct {
+	unsigned int handle;
+	int blocking;
+	unsigned int bufsize;
+	void *buf;
+} VCHIQ_DEQUEUE_MESSAGE_T;
+
+typedef struct {
+	unsigned int config_size;
+	VCHIQ_CONFIG_T *pconfig;
+} VCHIQ_GET_CONFIG_T;
+
+typedef struct {
+	unsigned int handle;
+	VCHIQ_SERVICE_OPTION_T option;
+	int value;
+} VCHIQ_SET_SERVICE_OPTION_T;
+
+typedef struct {
+	void     *virt_addr;
+	size_t    num_bytes;
+} VCHIQ_DUMP_MEM_T;
+
+#define VCHIQ_IOC_CONNECT              _IO(VCHIQ_IOC_MAGIC,   0)
+#define VCHIQ_IOC_SHUTDOWN             _IO(VCHIQ_IOC_MAGIC,   1)
+#define VCHIQ_IOC_CREATE_SERVICE \
+	_IOWR(VCHIQ_IOC_MAGIC, 2, VCHIQ_CREATE_SERVICE_T)
+#define VCHIQ_IOC_REMOVE_SERVICE       _IO(VCHIQ_IOC_MAGIC,   3)
+#define VCHIQ_IOC_QUEUE_MESSAGE \
+	_IOW(VCHIQ_IOC_MAGIC,  4, VCHIQ_QUEUE_MESSAGE_T)
+#define VCHIQ_IOC_QUEUE_BULK_TRANSMIT \
+	_IOWR(VCHIQ_IOC_MAGIC, 5, VCHIQ_QUEUE_BULK_TRANSFER_T)
+#define VCHIQ_IOC_QUEUE_BULK_RECEIVE \
+	_IOWR(VCHIQ_IOC_MAGIC, 6, VCHIQ_QUEUE_BULK_TRANSFER_T)
+#define VCHIQ_IOC_AWAIT_COMPLETION \
+	_IOWR(VCHIQ_IOC_MAGIC, 7, VCHIQ_AWAIT_COMPLETION_T)
+#define VCHIQ_IOC_DEQUEUE_MESSAGE \
+	_IOWR(VCHIQ_IOC_MAGIC, 8, VCHIQ_DEQUEUE_MESSAGE_T)
+#define VCHIQ_IOC_GET_CLIENT_ID        _IO(VCHIQ_IOC_MAGIC,   9)
+#define VCHIQ_IOC_GET_CONFIG \
+	_IOWR(VCHIQ_IOC_MAGIC, 10, VCHIQ_GET_CONFIG_T)
+#define VCHIQ_IOC_CLOSE_SERVICE        _IO(VCHIQ_IOC_MAGIC,   11)
+#define VCHIQ_IOC_USE_SERVICE          _IO(VCHIQ_IOC_MAGIC,   12)
+#define VCHIQ_IOC_RELEASE_SERVICE      _IO(VCHIQ_IOC_MAGIC,   13)
+#define VCHIQ_IOC_SET_SERVICE_OPTION \
+	_IOW(VCHIQ_IOC_MAGIC,  14, VCHIQ_SET_SERVICE_OPTION_T)
+#define VCHIQ_IOC_DUMP_PHYS_MEM \
+	_IOW(VCHIQ_IOC_MAGIC,  15, VCHIQ_DUMP_MEM_T)
+#define VCHIQ_IOC_LIB_VERSION          _IO(VCHIQ_IOC_MAGIC,   16)
+#define VCHIQ_IOC_CLOSE_DELIVERED      _IO(VCHIQ_IOC_MAGIC,   17)
+#define VCHIQ_IOC_MAX                  17
+
+#endif
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,458 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* ---- Include Files ---------------------------------------------------- */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+
+#include "vchiq_core.h"
+#include "vchiq_arm.h"
+#include "vchiq_killable.h"
+
+/* ---- Public Variables ------------------------------------------------- */
+
+/* ---- Private Constants and Types -------------------------------------- */
+
+struct bulk_waiter_node {
+	struct bulk_waiter bulk_waiter;
+	int pid;
+	struct list_head list;
+};
+
+struct vchiq_instance_struct {
+	VCHIQ_STATE_T *state;
+
+	int connected;
+
+	struct list_head bulk_waiter_list;
+	struct mutex bulk_waiter_list_mutex;
+};
+
+static VCHIQ_STATUS_T
+vchiq_blocking_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, void *data,
+	unsigned int size, VCHIQ_BULK_DIR_T dir);
+
+/****************************************************************************
+*
+*   vchiq_initialise
+*
+***************************************************************************/
+#define VCHIQ_INIT_RETRIES 10
+VCHIQ_STATUS_T vchiq_initialise(VCHIQ_INSTANCE_T *instanceOut)
+{
+	VCHIQ_STATUS_T status = VCHIQ_ERROR;
+	VCHIQ_STATE_T *state;
+	VCHIQ_INSTANCE_T instance = NULL;
+        int i;
+
+	vchiq_log_trace(vchiq_core_log_level, "%s called", __func__);
+
+        /* VideoCore may not be ready due to boot up timing.
+           It may never be ready if kernel and firmware are mismatched, so don't block forever. */
+        for (i=0; i<VCHIQ_INIT_RETRIES; i++) {
+		state = vchiq_get_state();
+		if (state)
+			break;
+		udelay(500);
+	}
+	if (i==VCHIQ_INIT_RETRIES) {
+		vchiq_log_error(vchiq_core_log_level,
+			"%s: videocore not initialized\n", __func__);
+		goto failed;
+	} else if (i>0) {
+		vchiq_log_warning(vchiq_core_log_level,
+			"%s: videocore initialized after %d retries\n", __func__, i);
+	}
+
+	instance = kzalloc(sizeof(*instance), GFP_KERNEL);
+	if (!instance) {
+		vchiq_log_error(vchiq_core_log_level,
+			"%s: error allocating vchiq instance\n", __func__);
+		goto failed;
+	}
+
+	instance->connected = 0;
+	instance->state = state;
+	mutex_init(&instance->bulk_waiter_list_mutex);
+	INIT_LIST_HEAD(&instance->bulk_waiter_list);
+
+	*instanceOut = instance;
+
+	status = VCHIQ_SUCCESS;
+
+failed:
+	vchiq_log_trace(vchiq_core_log_level,
+		"%s(%p): returning %d", __func__, instance, status);
+
+	return status;
+}
+EXPORT_SYMBOL(vchiq_initialise);
+
+/****************************************************************************
+*
+*   vchiq_shutdown
+*
+***************************************************************************/
+
+VCHIQ_STATUS_T vchiq_shutdown(VCHIQ_INSTANCE_T instance)
+{
+	VCHIQ_STATUS_T status;
+	VCHIQ_STATE_T *state = instance->state;
+
+	vchiq_log_trace(vchiq_core_log_level,
+		"%s(%p) called", __func__, instance);
+
+	if (mutex_lock_interruptible(&state->mutex) != 0)
+		return VCHIQ_RETRY;
+
+	/* Remove all services */
+	status = vchiq_shutdown_internal(state, instance);
+
+	mutex_unlock(&state->mutex);
+
+	vchiq_log_trace(vchiq_core_log_level,
+		"%s(%p): returning %d", __func__, instance, status);
+
+	if (status == VCHIQ_SUCCESS) {
+		struct list_head *pos, *next;
+		list_for_each_safe(pos, next,
+				&instance->bulk_waiter_list) {
+			struct bulk_waiter_node *waiter;
+			waiter = list_entry(pos,
+					struct bulk_waiter_node,
+					list);
+			list_del(pos);
+			vchiq_log_info(vchiq_arm_log_level,
+					"bulk_waiter - cleaned up %x "
+					"for pid %d",
+					(unsigned int)waiter, waiter->pid);
+			kfree(waiter);
+		}
+		kfree(instance);
+	}
+
+	return status;
+}
+EXPORT_SYMBOL(vchiq_shutdown);
+
+/****************************************************************************
+*
+*   vchiq_is_connected
+*
+***************************************************************************/
+
+int vchiq_is_connected(VCHIQ_INSTANCE_T instance)
+{
+	return instance->connected;
+}
+
+/****************************************************************************
+*
+*   vchiq_connect
+*
+***************************************************************************/
+
+VCHIQ_STATUS_T vchiq_connect(VCHIQ_INSTANCE_T instance)
+{
+	VCHIQ_STATUS_T status;
+	VCHIQ_STATE_T *state = instance->state;
+
+	vchiq_log_trace(vchiq_core_log_level,
+		"%s(%p) called", __func__, instance);
+
+	if (mutex_lock_interruptible(&state->mutex) != 0) {
+		vchiq_log_trace(vchiq_core_log_level,
+			"%s: call to mutex_lock failed", __func__);
+		status = VCHIQ_RETRY;
+		goto failed;
+	}
+	status = vchiq_connect_internal(state, instance);
+
+	if (status == VCHIQ_SUCCESS)
+		instance->connected = 1;
+
+	mutex_unlock(&state->mutex);
+
+failed:
+	vchiq_log_trace(vchiq_core_log_level,
+		"%s(%p): returning %d", __func__, instance, status);
+
+	return status;
+}
+EXPORT_SYMBOL(vchiq_connect);
+
+/****************************************************************************
+*
+*   vchiq_add_service
+*
+***************************************************************************/
+
+VCHIQ_STATUS_T vchiq_add_service(
+	VCHIQ_INSTANCE_T              instance,
+	const VCHIQ_SERVICE_PARAMS_T *params,
+	VCHIQ_SERVICE_HANDLE_T       *phandle)
+{
+	VCHIQ_STATUS_T status;
+	VCHIQ_STATE_T *state = instance->state;
+	VCHIQ_SERVICE_T *service = NULL;
+	int srvstate;
+
+	vchiq_log_trace(vchiq_core_log_level,
+		"%s(%p) called", __func__, instance);
+
+	*phandle = VCHIQ_SERVICE_HANDLE_INVALID;
+
+	srvstate = vchiq_is_connected(instance)
+		? VCHIQ_SRVSTATE_LISTENING
+		: VCHIQ_SRVSTATE_HIDDEN;
+
+	service = vchiq_add_service_internal(
+		state,
+		params,
+		srvstate,
+		instance,
+		NULL);
+
+	if (service) {
+		*phandle = service->handle;
+		status = VCHIQ_SUCCESS;
+	} else
+		status = VCHIQ_ERROR;
+
+	vchiq_log_trace(vchiq_core_log_level,
+		"%s(%p): returning %d", __func__, instance, status);
+
+	return status;
+}
+EXPORT_SYMBOL(vchiq_add_service);
+
+/****************************************************************************
+*
+*   vchiq_open_service
+*
+***************************************************************************/
+
+VCHIQ_STATUS_T vchiq_open_service(
+	VCHIQ_INSTANCE_T              instance,
+	const VCHIQ_SERVICE_PARAMS_T *params,
+	VCHIQ_SERVICE_HANDLE_T       *phandle)
+{
+	VCHIQ_STATUS_T   status = VCHIQ_ERROR;
+	VCHIQ_STATE_T   *state = instance->state;
+	VCHIQ_SERVICE_T *service = NULL;
+
+	vchiq_log_trace(vchiq_core_log_level,
+		"%s(%p) called", __func__, instance);
+
+	*phandle = VCHIQ_SERVICE_HANDLE_INVALID;
+
+	if (!vchiq_is_connected(instance))
+		goto failed;
+
+	service = vchiq_add_service_internal(state,
+		params,
+		VCHIQ_SRVSTATE_OPENING,
+		instance,
+		NULL);
+
+	if (service) {
+		*phandle = service->handle;
+		status = vchiq_open_service_internal(service, current->pid);
+		if (status != VCHIQ_SUCCESS) {
+			vchiq_remove_service(service->handle);
+			*phandle = VCHIQ_SERVICE_HANDLE_INVALID;
+		}
+	}
+
+failed:
+	vchiq_log_trace(vchiq_core_log_level,
+		"%s(%p): returning %d", __func__, instance, status);
+
+	return status;
+}
+EXPORT_SYMBOL(vchiq_open_service);
+
+VCHIQ_STATUS_T
+vchiq_queue_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle,
+	const void *data, unsigned int size, void *userdata)
+{
+	return vchiq_bulk_transfer(handle,
+		VCHI_MEM_HANDLE_INVALID, (void *)data, size, userdata,
+		VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_TRANSMIT);
+}
+EXPORT_SYMBOL(vchiq_queue_bulk_transmit);
+
+VCHIQ_STATUS_T
+vchiq_queue_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle, void *data,
+	unsigned int size, void *userdata)
+{
+	return vchiq_bulk_transfer(handle,
+		VCHI_MEM_HANDLE_INVALID, data, size, userdata,
+		VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_RECEIVE);
+}
+EXPORT_SYMBOL(vchiq_queue_bulk_receive);
+
+VCHIQ_STATUS_T
+vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle, const void *data,
+	unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode)
+{
+	VCHIQ_STATUS_T status;
+
+	switch (mode) {
+	case VCHIQ_BULK_MODE_NOCALLBACK:
+	case VCHIQ_BULK_MODE_CALLBACK:
+		status = vchiq_bulk_transfer(handle,
+			VCHI_MEM_HANDLE_INVALID, (void *)data, size, userdata,
+			mode, VCHIQ_BULK_TRANSMIT);
+		break;
+	case VCHIQ_BULK_MODE_BLOCKING:
+		status = vchiq_blocking_bulk_transfer(handle,
+			(void *)data, size, VCHIQ_BULK_TRANSMIT);
+		break;
+	default:
+		return VCHIQ_ERROR;
+	}
+
+	return status;
+}
+EXPORT_SYMBOL(vchiq_bulk_transmit);
+
+VCHIQ_STATUS_T
+vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle, void *data,
+	unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode)
+{
+	VCHIQ_STATUS_T status;
+
+	switch (mode) {
+	case VCHIQ_BULK_MODE_NOCALLBACK:
+	case VCHIQ_BULK_MODE_CALLBACK:
+		status = vchiq_bulk_transfer(handle,
+			VCHI_MEM_HANDLE_INVALID, data, size, userdata,
+			mode, VCHIQ_BULK_RECEIVE);
+		break;
+	case VCHIQ_BULK_MODE_BLOCKING:
+		status = vchiq_blocking_bulk_transfer(handle,
+			(void *)data, size, VCHIQ_BULK_RECEIVE);
+		break;
+	default:
+		return VCHIQ_ERROR;
+	}
+
+	return status;
+}
+EXPORT_SYMBOL(vchiq_bulk_receive);
+
+static VCHIQ_STATUS_T
+vchiq_blocking_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, void *data,
+	unsigned int size, VCHIQ_BULK_DIR_T dir)
+{
+	VCHIQ_INSTANCE_T instance;
+	VCHIQ_SERVICE_T *service;
+	VCHIQ_STATUS_T status;
+	struct bulk_waiter_node *waiter = NULL;
+	struct list_head *pos;
+
+	service = find_service_by_handle(handle);
+	if (!service)
+		return VCHIQ_ERROR;
+
+	instance = service->instance;
+
+	unlock_service(service);
+
+	mutex_lock(&instance->bulk_waiter_list_mutex);
+	list_for_each(pos, &instance->bulk_waiter_list) {
+		if (list_entry(pos, struct bulk_waiter_node,
+				list)->pid == current->pid) {
+			waiter = list_entry(pos,
+				struct bulk_waiter_node,
+				list);
+			list_del(pos);
+			break;
+		}
+	}
+	mutex_unlock(&instance->bulk_waiter_list_mutex);
+
+	if (waiter) {
+		VCHIQ_BULK_T *bulk = waiter->bulk_waiter.bulk;
+		if (bulk) {
+			/* This thread has an outstanding bulk transfer. */
+			if ((bulk->data != data) ||
+				(bulk->size != size)) {
+				/* This is not a retry of the previous one.
+				** Cancel the signal when the transfer
+				** completes. */
+				spin_lock(&bulk_waiter_spinlock);
+				bulk->userdata = NULL;
+				spin_unlock(&bulk_waiter_spinlock);
+			}
+		}
+	}
+
+	if (!waiter) {
+		waiter = kzalloc(sizeof(struct bulk_waiter_node), GFP_KERNEL);
+		if (!waiter) {
+			vchiq_log_error(vchiq_core_log_level,
+				"%s - out of memory", __func__);
+			return VCHIQ_ERROR;
+		}
+	}
+
+	status = vchiq_bulk_transfer(handle, VCHI_MEM_HANDLE_INVALID,
+		data, size, &waiter->bulk_waiter, VCHIQ_BULK_MODE_BLOCKING,
+		dir);
+	if ((status != VCHIQ_RETRY) || fatal_signal_pending(current) ||
+		!waiter->bulk_waiter.bulk) {
+		VCHIQ_BULK_T *bulk = waiter->bulk_waiter.bulk;
+		if (bulk) {
+			/* Cancel the signal when the transfer
+			 ** completes. */
+			spin_lock(&bulk_waiter_spinlock);
+			bulk->userdata = NULL;
+			spin_unlock(&bulk_waiter_spinlock);
+		}
+		kfree(waiter);
+	} else {
+		waiter->pid = current->pid;
+		mutex_lock(&instance->bulk_waiter_list_mutex);
+		list_add(&waiter->list, &instance->bulk_waiter_list);
+		mutex_unlock(&instance->bulk_waiter_list_mutex);
+		vchiq_log_info(vchiq_arm_log_level,
+				"saved bulk_waiter %x for pid %d",
+				(unsigned int)waiter, current->pid);
+	}
+
+	return status;
+}
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_killable.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_killable.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_killable.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_killable.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_KILLABLE_H
+#define VCHIQ_KILLABLE_H
+
+#include <linux/mutex.h>
+#include <linux/semaphore.h>
+
+#define SHUTDOWN_SIGS   (sigmask(SIGKILL) | sigmask(SIGINT) | sigmask(SIGQUIT) | sigmask(SIGTRAP) | sigmask(SIGSTOP) | sigmask(SIGCONT))
+
+static inline int __must_check down_interruptible_killable(struct semaphore *sem)
+{
+	/* Allow interception of killable signals only. We don't want to be interrupted by harmless signals like SIGALRM */
+	int ret;
+	sigset_t blocked, oldset;
+	siginitsetinv(&blocked, SHUTDOWN_SIGS);
+	sigprocmask(SIG_SETMASK, &blocked, &oldset);
+	ret = down_interruptible(sem);
+	sigprocmask(SIG_SETMASK, &oldset, NULL);
+	return ret;
+}
+#define down_interruptible down_interruptible_killable
+
+
+static inline int __must_check mutex_lock_interruptible_killable(struct mutex *lock)
+{
+	/* Allow interception of killable signals only. We don't want to be interrupted by harmless signals like SIGALRM */
+	int ret;
+	sigset_t blocked, oldset;
+	siginitsetinv(&blocked, SHUTDOWN_SIGS);
+	sigprocmask(SIG_SETMASK, &blocked, &oldset);
+	ret = mutex_lock_interruptible(lock);
+	sigprocmask(SIG_SETMASK, &oldset, NULL);
+	return ret;
+}
+#define mutex_lock_interruptible mutex_lock_interruptible_killable
+
+#endif
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,71 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_MEMDRV_H
+#define VCHIQ_MEMDRV_H
+
+/* ---- Include Files ----------------------------------------------------- */
+
+#include <linux/kernel.h>
+#include "vchiq_if.h"
+
+/* ---- Constants and Types ---------------------------------------------- */
+
+typedef struct {
+	 void                   *armSharedMemVirt;
+	 dma_addr_t              armSharedMemPhys;
+	 size_t                  armSharedMemSize;
+
+	 void                   *vcSharedMemVirt;
+	 dma_addr_t              vcSharedMemPhys;
+	 size_t                  vcSharedMemSize;
+} VCHIQ_SHARED_MEM_INFO_T;
+
+/* ---- Variable Externs ------------------------------------------------- */
+
+/* ---- Function Prototypes ---------------------------------------------- */
+
+void vchiq_get_shared_mem_info(VCHIQ_SHARED_MEM_INFO_T *info);
+
+VCHIQ_STATUS_T vchiq_memdrv_initialise(void);
+
+VCHIQ_STATUS_T vchiq_userdrv_create_instance(
+	const VCHIQ_PLATFORM_DATA_T * platform_data);
+
+VCHIQ_STATUS_T vchiq_userdrv_suspend(
+	const VCHIQ_PLATFORM_DATA_T * platform_data);
+
+VCHIQ_STATUS_T vchiq_userdrv_resume(
+	const VCHIQ_PLATFORM_DATA_T * platform_data);
+
+#endif
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,58 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_PAGELIST_H
+#define VCHIQ_PAGELIST_H
+
+#ifndef PAGE_SIZE
+#define PAGE_SIZE 4096
+#endif
+#define CACHE_LINE_SIZE 32
+#define PAGELIST_WRITE 0
+#define PAGELIST_READ 1
+#define PAGELIST_READ_WITH_FRAGMENTS 2
+
+typedef struct pagelist_struct {
+	unsigned long length;
+	unsigned short type;
+	unsigned short offset;
+	unsigned long addrs[1];	/* N.B. 12 LSBs hold the number of following
+				   pages at consecutive addresses. */
+} PAGELIST_T;
+
+typedef struct fragments_struct {
+	char headbuf[CACHE_LINE_SIZE];
+	char tailbuf[CACHE_LINE_SIZE];
+} FRAGMENTS_T;
+
+#endif /* VCHIQ_PAGELIST_H */
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,860 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include "interface/vchi/vchi.h"
+#include "vchiq.h"
+#include "vchiq_core.h"
+
+#include "vchiq_util.h"
+
+#include <stddef.h>
+
+#define vchiq_status_to_vchi(status) ((int32_t)status)
+
+typedef struct {
+	VCHIQ_SERVICE_HANDLE_T handle;
+
+	VCHIU_QUEUE_T queue;
+
+	VCHI_CALLBACK_T callback;
+	void *callback_param;
+} SHIM_SERVICE_T;
+
+/* ----------------------------------------------------------------------
+ * return pointer to the mphi message driver function table
+ * -------------------------------------------------------------------- */
+const VCHI_MESSAGE_DRIVER_T *
+vchi_mphi_message_driver_func_table(void)
+{
+	return NULL;
+}
+
+/* ----------------------------------------------------------------------
+ * return a pointer to the 'single' connection driver fops
+ * -------------------------------------------------------------------- */
+const VCHI_CONNECTION_API_T *
+single_get_func_table(void)
+{
+	return NULL;
+}
+
+VCHI_CONNECTION_T *vchi_create_connection(
+	const VCHI_CONNECTION_API_T *function_table,
+	const VCHI_MESSAGE_DRIVER_T *low_level)
+{
+	(void)function_table;
+	(void)low_level;
+	return NULL;
+}
+
+/***********************************************************
+ * Name: vchi_msg_peek
+ *
+ * Arguments:  const VCHI_SERVICE_HANDLE_T handle,
+ *             void **data,
+ *             uint32_t *msg_size,
+
+
+ *             VCHI_FLAGS_T flags
+ *
+ * Description: Routine to return a pointer to the current message (to allow in
+ *              place processing). The message can be removed using
+ *              vchi_msg_remove when you're finished
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+int32_t vchi_msg_peek(VCHI_SERVICE_HANDLE_T handle,
+	void **data,
+	uint32_t *msg_size,
+	VCHI_FLAGS_T flags)
+{
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	VCHIQ_HEADER_T *header;
+
+	WARN_ON((flags != VCHI_FLAGS_NONE) &&
+		(flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE));
+
+	if (flags == VCHI_FLAGS_NONE)
+		if (vchiu_queue_is_empty(&service->queue))
+			return -1;
+
+	header = vchiu_queue_peek(&service->queue);
+
+	*data = header->data;
+	*msg_size = header->size;
+
+	return 0;
+}
+EXPORT_SYMBOL(vchi_msg_peek);
+
+/***********************************************************
+ * Name: vchi_msg_remove
+ *
+ * Arguments:  const VCHI_SERVICE_HANDLE_T handle,
+ *
+ * Description: Routine to remove a message (after it has been read with
+ *              vchi_msg_peek)
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+int32_t vchi_msg_remove(VCHI_SERVICE_HANDLE_T handle)
+{
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	VCHIQ_HEADER_T *header;
+
+	header = vchiu_queue_pop(&service->queue);
+
+	vchiq_release_message(service->handle, header);
+
+	return 0;
+}
+EXPORT_SYMBOL(vchi_msg_remove);
+
+/***********************************************************
+ * Name: vchi_msg_queue
+ *
+ * Arguments:  VCHI_SERVICE_HANDLE_T handle,
+ *             const void *data,
+ *             uint32_t data_size,
+ *             VCHI_FLAGS_T flags,
+ *             void *msg_handle,
+ *
+ * Description: Thin wrapper to queue a message onto a connection
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+int32_t vchi_msg_queue(VCHI_SERVICE_HANDLE_T handle,
+	const void *data,
+	uint32_t data_size,
+	VCHI_FLAGS_T flags,
+	void *msg_handle)
+{
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	VCHIQ_ELEMENT_T element = {data, data_size};
+	VCHIQ_STATUS_T status;
+
+	(void)msg_handle;
+
+	WARN_ON(flags != VCHI_FLAGS_BLOCK_UNTIL_QUEUED);
+
+	status = vchiq_queue_message(service->handle, &element, 1);
+
+	/* vchiq_queue_message() may return VCHIQ_RETRY, so we need to
+	** implement a retry mechanism since this function is supposed
+	** to block until queued
+	*/
+	while (status == VCHIQ_RETRY) {
+		msleep(1);
+		status = vchiq_queue_message(service->handle, &element, 1);
+	}
+
+	return vchiq_status_to_vchi(status);
+}
+EXPORT_SYMBOL(vchi_msg_queue);
+
+/***********************************************************
+ * Name: vchi_bulk_queue_receive
+ *
+ * Arguments:  VCHI_BULK_HANDLE_T handle,
+ *             void *data_dst,
+ *             const uint32_t data_size,
+ *             VCHI_FLAGS_T flags
+ *             void *bulk_handle
+ *
+ * Description: Routine to setup a rcv buffer
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+int32_t vchi_bulk_queue_receive(VCHI_SERVICE_HANDLE_T handle,
+	void *data_dst,
+	uint32_t data_size,
+	VCHI_FLAGS_T flags,
+	void *bulk_handle)
+{
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	VCHIQ_BULK_MODE_T mode;
+	VCHIQ_STATUS_T status;
+
+	switch ((int)flags) {
+	case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE
+		| VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
+		WARN_ON(!service->callback);
+		mode = VCHIQ_BULK_MODE_CALLBACK;
+		break;
+	case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
+		mode = VCHIQ_BULK_MODE_BLOCKING;
+		break;
+	case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
+	case VCHI_FLAGS_NONE:
+		mode = VCHIQ_BULK_MODE_NOCALLBACK;
+		break;
+	default:
+		WARN(1, "unsupported message\n");
+		return vchiq_status_to_vchi(VCHIQ_ERROR);
+	}
+
+	status = vchiq_bulk_receive(service->handle, data_dst, data_size,
+		bulk_handle, mode);
+
+	/* vchiq_bulk_receive() may return VCHIQ_RETRY, so we need to
+	** implement a retry mechanism since this function is supposed
+	** to block until queued
+	*/
+	while (status == VCHIQ_RETRY) {
+		msleep(1);
+		status = vchiq_bulk_receive(service->handle, data_dst,
+			data_size, bulk_handle, mode);
+	}
+
+	return vchiq_status_to_vchi(status);
+}
+EXPORT_SYMBOL(vchi_bulk_queue_receive);
+
+/***********************************************************
+ * Name: vchi_bulk_queue_transmit
+ *
+ * Arguments:  VCHI_BULK_HANDLE_T handle,
+ *             const void *data_src,
+ *             uint32_t data_size,
+ *             VCHI_FLAGS_T flags,
+ *             void *bulk_handle
+ *
+ * Description: Routine to transmit some data
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+int32_t vchi_bulk_queue_transmit(VCHI_SERVICE_HANDLE_T handle,
+	const void *data_src,
+	uint32_t data_size,
+	VCHI_FLAGS_T flags,
+	void *bulk_handle)
+{
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	VCHIQ_BULK_MODE_T mode;
+	VCHIQ_STATUS_T status;
+
+	switch ((int)flags) {
+	case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE
+		| VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
+		WARN_ON(!service->callback);
+		mode = VCHIQ_BULK_MODE_CALLBACK;
+		break;
+	case VCHI_FLAGS_BLOCK_UNTIL_DATA_READ:
+	case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
+		mode = VCHIQ_BULK_MODE_BLOCKING;
+		break;
+	case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
+	case VCHI_FLAGS_NONE:
+		mode = VCHIQ_BULK_MODE_NOCALLBACK;
+		break;
+	default:
+		WARN(1, "unsupported message\n");
+		return vchiq_status_to_vchi(VCHIQ_ERROR);
+	}
+
+	status = vchiq_bulk_transmit(service->handle, data_src, data_size,
+		bulk_handle, mode);
+
+	/* vchiq_bulk_transmit() may return VCHIQ_RETRY, so we need to
+	** implement a retry mechanism since this function is supposed
+	** to block until queued
+	*/
+	while (status == VCHIQ_RETRY) {
+		msleep(1);
+		status = vchiq_bulk_transmit(service->handle, data_src,
+			data_size, bulk_handle, mode);
+	}
+
+	return vchiq_status_to_vchi(status);
+}
+EXPORT_SYMBOL(vchi_bulk_queue_transmit);
+
+/***********************************************************
+ * Name: vchi_msg_dequeue
+ *
+ * Arguments:  VCHI_SERVICE_HANDLE_T handle,
+ *             void *data,
+ *             uint32_t max_data_size_to_read,
+ *             uint32_t *actual_msg_size
+ *             VCHI_FLAGS_T flags
+ *
+ * Description: Routine to dequeue a message into the supplied buffer
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+int32_t vchi_msg_dequeue(VCHI_SERVICE_HANDLE_T handle,
+	void *data,
+	uint32_t max_data_size_to_read,
+	uint32_t *actual_msg_size,
+	VCHI_FLAGS_T flags)
+{
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	VCHIQ_HEADER_T *header;
+
+	WARN_ON((flags != VCHI_FLAGS_NONE) &&
+		(flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE));
+
+	if (flags == VCHI_FLAGS_NONE)
+		if (vchiu_queue_is_empty(&service->queue))
+			return -1;
+
+	header = vchiu_queue_pop(&service->queue);
+
+	memcpy(data, header->data, header->size < max_data_size_to_read ?
+		header->size : max_data_size_to_read);
+
+	*actual_msg_size = header->size;
+
+	vchiq_release_message(service->handle, header);
+
+	return 0;
+}
+EXPORT_SYMBOL(vchi_msg_dequeue);
+
+/***********************************************************
+ * Name: vchi_msg_queuev
+ *
+ * Arguments:  VCHI_SERVICE_HANDLE_T handle,
+ *             VCHI_MSG_VECTOR_T *vector,
+ *             uint32_t count,
+ *             VCHI_FLAGS_T flags,
+ *             void *msg_handle
+ *
+ * Description: Thin wrapper to queue a message onto a connection
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+
+vchiq_static_assert(sizeof(VCHI_MSG_VECTOR_T) == sizeof(VCHIQ_ELEMENT_T));
+vchiq_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_base) ==
+	offsetof(VCHIQ_ELEMENT_T, data));
+vchiq_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_len) ==
+	offsetof(VCHIQ_ELEMENT_T, size));
+
+int32_t vchi_msg_queuev(VCHI_SERVICE_HANDLE_T handle,
+	VCHI_MSG_VECTOR_T *vector,
+	uint32_t count,
+	VCHI_FLAGS_T flags,
+	void *msg_handle)
+{
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+
+	(void)msg_handle;
+
+	WARN_ON(flags != VCHI_FLAGS_BLOCK_UNTIL_QUEUED);
+
+	return vchiq_status_to_vchi(vchiq_queue_message(service->handle,
+		(const VCHIQ_ELEMENT_T *)vector, count));
+}
+EXPORT_SYMBOL(vchi_msg_queuev);
+
+/***********************************************************
+ * Name: vchi_held_msg_release
+ *
+ * Arguments:  VCHI_HELD_MSG_T *message
+ *
+ * Description: Routine to release a held message (after it has been read with
+ *              vchi_msg_hold)
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+int32_t vchi_held_msg_release(VCHI_HELD_MSG_T *message)
+{
+	vchiq_release_message((VCHIQ_SERVICE_HANDLE_T)message->service,
+		(VCHIQ_HEADER_T *)message->message);
+
+	return 0;
+}
+EXPORT_SYMBOL(vchi_held_msg_release);
+
+/***********************************************************
+ * Name: vchi_msg_hold
+ *
+ * Arguments:  VCHI_SERVICE_HANDLE_T handle,
+ *             void **data,
+ *             uint32_t *msg_size,
+ *             VCHI_FLAGS_T flags,
+ *             VCHI_HELD_MSG_T *message_handle
+ *
+ * Description: Routine to return a pointer to the current message (to allow
+ *              in place processing). The message is dequeued - don't forget
+ *              to release the message using vchi_held_msg_release when you're
+ *              finished.
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+int32_t vchi_msg_hold(VCHI_SERVICE_HANDLE_T handle,
+	void **data,
+	uint32_t *msg_size,
+	VCHI_FLAGS_T flags,
+	VCHI_HELD_MSG_T *message_handle)
+{
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	VCHIQ_HEADER_T *header;
+
+	WARN_ON((flags != VCHI_FLAGS_NONE) &&
+		(flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE));
+
+	if (flags == VCHI_FLAGS_NONE)
+		if (vchiu_queue_is_empty(&service->queue))
+			return -1;
+
+	header = vchiu_queue_pop(&service->queue);
+
+	*data = header->data;
+	*msg_size = header->size;
+
+	message_handle->service =
+		(struct opaque_vchi_service_t *)service->handle;
+	message_handle->message = header;
+
+	return 0;
+}
+EXPORT_SYMBOL(vchi_msg_hold);
+
+/***********************************************************
+ * Name: vchi_initialise
+ *
+ * Arguments: VCHI_INSTANCE_T *instance_handle
+ *
+ * Description: Initialises the hardware but does not transmit anything
+ *              When run as a Host App this will be called twice hence the need
+ *              to malloc the state information
+ *
+ * Returns: 0 if successful, failure otherwise
+ *
+ ***********************************************************/
+
+int32_t vchi_initialise(VCHI_INSTANCE_T *instance_handle)
+{
+	VCHIQ_INSTANCE_T instance;
+	VCHIQ_STATUS_T status;
+
+	status = vchiq_initialise(&instance);
+
+	*instance_handle = (VCHI_INSTANCE_T)instance;
+
+	return vchiq_status_to_vchi(status);
+}
+EXPORT_SYMBOL(vchi_initialise);
+
+/***********************************************************
+ * Name: vchi_connect
+ *
+ * Arguments: VCHI_CONNECTION_T **connections
+ *            const uint32_t num_connections
+ *            VCHI_INSTANCE_T instance_handle)
+ *
+ * Description: Starts the command service on each connection,
+ *              causing INIT messages to be pinged back and forth
+ *
+ * Returns: 0 if successful, failure otherwise
+ *
+ ***********************************************************/
+int32_t vchi_connect(VCHI_CONNECTION_T **connections,
+	const uint32_t num_connections,
+	VCHI_INSTANCE_T instance_handle)
+{
+	VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
+
+	(void)connections;
+	(void)num_connections;
+
+	return vchiq_connect(instance);
+}
+EXPORT_SYMBOL(vchi_connect);
+
+
+/***********************************************************
+ * Name: vchi_disconnect
+ *
+ * Arguments: VCHI_INSTANCE_T instance_handle
+ *
+ * Description: Stops the command service on each connection,
+ *              causing DE-INIT messages to be pinged back and forth
+ *
+ * Returns: 0 if successful, failure otherwise
+ *
+ ***********************************************************/
+int32_t vchi_disconnect(VCHI_INSTANCE_T instance_handle)
+{
+	VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
+	return vchiq_status_to_vchi(vchiq_shutdown(instance));
+}
+EXPORT_SYMBOL(vchi_disconnect);
+
+
+/***********************************************************
+ * Name: vchi_service_open
+ * Name: vchi_service_create
+ *
+ * Arguments: VCHI_INSTANCE_T *instance_handle
+ *            SERVICE_CREATION_T *setup,
+ *            VCHI_SERVICE_HANDLE_T *handle
+ *
+ * Description: Routine to open a service
+ *
+ * Returns: int32_t - success == 0
+ *
+ ***********************************************************/
+
+static VCHIQ_STATUS_T shim_callback(VCHIQ_REASON_T reason,
+	VCHIQ_HEADER_T *header, VCHIQ_SERVICE_HANDLE_T handle, void *bulk_user)
+{
+	SHIM_SERVICE_T *service =
+		(SHIM_SERVICE_T *)VCHIQ_GET_SERVICE_USERDATA(handle);
+
+        if (!service->callback)
+		goto release;
+
+	switch (reason) {
+	case VCHIQ_MESSAGE_AVAILABLE:
+		vchiu_queue_push(&service->queue, header);
+
+		service->callback(service->callback_param,
+				  VCHI_CALLBACK_MSG_AVAILABLE, NULL);
+
+		goto done;
+		break;
+
+	case VCHIQ_BULK_TRANSMIT_DONE:
+		service->callback(service->callback_param,
+				  VCHI_CALLBACK_BULK_SENT, bulk_user);
+		break;
+
+	case VCHIQ_BULK_RECEIVE_DONE:
+		service->callback(service->callback_param,
+				  VCHI_CALLBACK_BULK_RECEIVED, bulk_user);
+		break;
+
+	case VCHIQ_SERVICE_CLOSED:
+		service->callback(service->callback_param,
+				  VCHI_CALLBACK_SERVICE_CLOSED, NULL);
+		break;
+
+	case VCHIQ_SERVICE_OPENED:
+		/* No equivalent VCHI reason */
+		break;
+
+	case VCHIQ_BULK_TRANSMIT_ABORTED:
+		service->callback(service->callback_param,
+				  VCHI_CALLBACK_BULK_TRANSMIT_ABORTED,
+				  bulk_user);
+		break;
+
+	case VCHIQ_BULK_RECEIVE_ABORTED:
+		service->callback(service->callback_param,
+				  VCHI_CALLBACK_BULK_RECEIVE_ABORTED,
+				  bulk_user);
+		break;
+
+	default:
+		WARN(1, "not supported\n");
+		break;
+	}
+
+release:
+        vchiq_release_message(service->handle, header);
+done:
+	return VCHIQ_SUCCESS;
+}
+
+static SHIM_SERVICE_T *service_alloc(VCHIQ_INSTANCE_T instance,
+	SERVICE_CREATION_T *setup)
+{
+	SHIM_SERVICE_T *service = kzalloc(sizeof(SHIM_SERVICE_T), GFP_KERNEL);
+
+	(void)instance;
+
+	if (service) {
+		if (vchiu_queue_init(&service->queue, 64)) {
+			service->callback = setup->callback;
+			service->callback_param = setup->callback_param;
+		} else {
+			kfree(service);
+			service = NULL;
+		}
+	}
+
+	return service;
+}
+
+static void service_free(SHIM_SERVICE_T *service)
+{
+	if (service) {
+		vchiu_queue_delete(&service->queue);
+		kfree(service);
+	}
+}
+
+int32_t vchi_service_open(VCHI_INSTANCE_T instance_handle,
+	SERVICE_CREATION_T *setup,
+	VCHI_SERVICE_HANDLE_T *handle)
+{
+	VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
+	SHIM_SERVICE_T *service = service_alloc(instance, setup);
+
+	*handle = (VCHI_SERVICE_HANDLE_T)service;
+
+	if (service) {
+		VCHIQ_SERVICE_PARAMS_T params;
+		VCHIQ_STATUS_T status;
+
+		memset(&params, 0, sizeof(params));
+		params.fourcc = setup->service_id;
+		params.callback = shim_callback;
+		params.userdata = service;
+		params.version = setup->version.version;
+		params.version_min = setup->version.version_min;
+
+		status = vchiq_open_service(instance, &params,
+			&service->handle);
+		if (status != VCHIQ_SUCCESS) {
+			service_free(service);
+			service = NULL;
+			*handle = NULL;
+		}
+	}
+
+	return (service != NULL) ? 0 : -1;
+}
+EXPORT_SYMBOL(vchi_service_open);
+
+int32_t vchi_service_create(VCHI_INSTANCE_T instance_handle,
+	SERVICE_CREATION_T *setup,
+	VCHI_SERVICE_HANDLE_T *handle)
+{
+	VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
+	SHIM_SERVICE_T *service = service_alloc(instance, setup);
+
+	*handle = (VCHI_SERVICE_HANDLE_T)service;
+
+	if (service) {
+		VCHIQ_SERVICE_PARAMS_T params;
+		VCHIQ_STATUS_T status;
+
+		memset(&params, 0, sizeof(params));
+		params.fourcc = setup->service_id;
+		params.callback = shim_callback;
+		params.userdata = service;
+		params.version = setup->version.version;
+		params.version_min = setup->version.version_min;
+		status = vchiq_add_service(instance, &params, &service->handle);
+
+		if (status != VCHIQ_SUCCESS) {
+			service_free(service);
+			service = NULL;
+			*handle = NULL;
+		}
+	}
+
+	return (service != NULL) ? 0 : -1;
+}
+EXPORT_SYMBOL(vchi_service_create);
+
+int32_t vchi_service_close(const VCHI_SERVICE_HANDLE_T handle)
+{
+	int32_t ret = -1;
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	if (service) {
+		VCHIQ_STATUS_T status = vchiq_close_service(service->handle);
+		if (status == VCHIQ_SUCCESS) {
+			service_free(service);
+			service = NULL;
+		}
+
+		ret = vchiq_status_to_vchi(status);
+	}
+	return ret;
+}
+EXPORT_SYMBOL(vchi_service_close);
+
+int32_t vchi_service_destroy(const VCHI_SERVICE_HANDLE_T handle)
+{
+	int32_t ret = -1;
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	if (service) {
+		VCHIQ_STATUS_T status = vchiq_remove_service(service->handle);
+		if (status == VCHIQ_SUCCESS) {
+			service_free(service);
+			service = NULL;
+		}
+
+		ret = vchiq_status_to_vchi(status);
+	}
+	return ret;
+}
+EXPORT_SYMBOL(vchi_service_destroy);
+
+int32_t vchi_service_set_option(const VCHI_SERVICE_HANDLE_T handle,
+				VCHI_SERVICE_OPTION_T option,
+				int value)
+{
+	int32_t ret = -1;
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	VCHIQ_SERVICE_OPTION_T vchiq_option;
+	switch (option) {
+	case VCHI_SERVICE_OPTION_TRACE:
+		vchiq_option = VCHIQ_SERVICE_OPTION_TRACE;
+		break;
+	case VCHI_SERVICE_OPTION_SYNCHRONOUS:
+		vchiq_option = VCHIQ_SERVICE_OPTION_SYNCHRONOUS;
+		break;
+	default:
+		service = NULL;
+		break;
+	}
+	if (service) {
+		VCHIQ_STATUS_T status =
+			vchiq_set_service_option(service->handle,
+						vchiq_option,
+						value);
+
+		ret = vchiq_status_to_vchi(status);
+	}
+	return ret;
+}
+EXPORT_SYMBOL(vchi_service_set_option);
+
+int32_t vchi_get_peer_version( const VCHI_SERVICE_HANDLE_T handle, short *peer_version )
+{
+   int32_t ret = -1;
+   SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+   if(service)
+   {
+      VCHIQ_STATUS_T status = vchiq_get_peer_version(service->handle, peer_version);
+      ret = vchiq_status_to_vchi( status );
+   }
+   return ret;
+}
+EXPORT_SYMBOL(vchi_get_peer_version);
+
+/* ----------------------------------------------------------------------
+ * read a uint32_t from buffer.
+ * network format is defined to be little endian
+ * -------------------------------------------------------------------- */
+uint32_t
+vchi_readbuf_uint32(const void *_ptr)
+{
+	const unsigned char *ptr = _ptr;
+	return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24);
+}
+
+/* ----------------------------------------------------------------------
+ * write a uint32_t to buffer.
+ * network format is defined to be little endian
+ * -------------------------------------------------------------------- */
+void
+vchi_writebuf_uint32(void *_ptr, uint32_t value)
+{
+	unsigned char *ptr = _ptr;
+	ptr[0] = (unsigned char)((value >> 0)  & 0xFF);
+	ptr[1] = (unsigned char)((value >> 8)  & 0xFF);
+	ptr[2] = (unsigned char)((value >> 16) & 0xFF);
+	ptr[3] = (unsigned char)((value >> 24) & 0xFF);
+}
+
+/* ----------------------------------------------------------------------
+ * read a uint16_t from buffer.
+ * network format is defined to be little endian
+ * -------------------------------------------------------------------- */
+uint16_t
+vchi_readbuf_uint16(const void *_ptr)
+{
+	const unsigned char *ptr = _ptr;
+	return ptr[0] | (ptr[1] << 8);
+}
+
+/* ----------------------------------------------------------------------
+ * write a uint16_t into the buffer.
+ * network format is defined to be little endian
+ * -------------------------------------------------------------------- */
+void
+vchi_writebuf_uint16(void *_ptr, uint16_t value)
+{
+	unsigned char *ptr = _ptr;
+	ptr[0] = (value >> 0)  & 0xFF;
+	ptr[1] = (value >> 8)  & 0xFF;
+}
+
+/***********************************************************
+ * Name: vchi_service_use
+ *
+ * Arguments: const VCHI_SERVICE_HANDLE_T handle
+ *
+ * Description: Routine to increment refcount on a service
+ *
+ * Returns: void
+ *
+ ***********************************************************/
+int32_t vchi_service_use(const VCHI_SERVICE_HANDLE_T handle)
+{
+	int32_t ret = -1;
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	if (service)
+		ret = vchiq_status_to_vchi(vchiq_use_service(service->handle));
+	return ret;
+}
+EXPORT_SYMBOL(vchi_service_use);
+
+/***********************************************************
+ * Name: vchi_service_release
+ *
+ * Arguments: const VCHI_SERVICE_HANDLE_T handle
+ *
+ * Description: Routine to decrement refcount on a service
+ *
+ * Returns: void
+ *
+ ***********************************************************/
+int32_t vchi_service_release(const VCHI_SERVICE_HANDLE_T handle)
+{
+	int32_t ret = -1;
+	SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
+	if (service)
+		ret = vchiq_status_to_vchi(
+			vchiq_release_service(service->handle));
+	return ret;
+}
+EXPORT_SYMBOL(vchi_service_release);
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,152 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "vchiq_util.h"
+#include "vchiq_killable.h"
+
+static inline int is_pow2(int i)
+{
+	return i && !(i & (i - 1));
+}
+
+int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size)
+{
+	WARN_ON(!is_pow2(size));
+
+	queue->size = size;
+	queue->read = 0;
+	queue->write = 0;
+
+	sema_init(&queue->pop, 0);
+	sema_init(&queue->push, 0);
+
+	queue->storage = kzalloc(size * sizeof(VCHIQ_HEADER_T *), GFP_KERNEL);
+	if (queue->storage == NULL) {
+		vchiu_queue_delete(queue);
+		return 0;
+	}
+	return 1;
+}
+
+void vchiu_queue_delete(VCHIU_QUEUE_T *queue)
+{
+	if (queue->storage != NULL)
+		kfree(queue->storage);
+}
+
+int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue)
+{
+	return queue->read == queue->write;
+}
+
+int vchiu_queue_is_full(VCHIU_QUEUE_T *queue)
+{
+	return queue->write == queue->read + queue->size;
+}
+
+void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header)
+{
+	while (queue->write == queue->read + queue->size) {
+		if (down_interruptible(&queue->pop) != 0) {
+			flush_signals(current);
+		}
+	}
+
+	/*
+	 * Write to queue->storage must be visible after read from
+	 * queue->read
+	 */
+	smp_mb();
+
+	queue->storage[queue->write & (queue->size - 1)] = header;
+
+	/*
+	 * Write to queue->storage must be visible before write to
+	 * queue->write
+	 */
+	smp_wmb();
+
+	queue->write++;
+
+	up(&queue->push);
+}
+
+VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue)
+{
+	while (queue->write == queue->read) {
+		if (down_interruptible(&queue->push) != 0) {
+			flush_signals(current);
+		}
+	}
+
+	up(&queue->push); // We haven't removed anything from the queue.
+
+	/*
+	 * Read from queue->storage must be visible after read from
+	 * queue->write
+	 */
+	smp_rmb();
+
+	return queue->storage[queue->read & (queue->size - 1)];
+}
+
+VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue)
+{
+	VCHIQ_HEADER_T *header;
+
+	while (queue->write == queue->read) {
+		if (down_interruptible(&queue->push) != 0) {
+			flush_signals(current);
+		}
+	}
+
+	/*
+	 * Read from queue->storage must be visible after read from
+	 * queue->write
+	 */
+	smp_rmb();
+
+	header = queue->storage[queue->read & (queue->size - 1)];
+
+	/*
+	 * Read from queue->storage must be visible before write to
+	 * queue->read
+	 */
+	smp_mb();
+
+	queue->read++;
+
+	up(&queue->pop);
+
+	return header;
+}
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,81 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VCHIQ_UTIL_H
+#define VCHIQ_UTIL_H
+
+#include <linux/types.h>
+#include <linux/semaphore.h>
+#include <linux/mutex.h>
+#include <linux/bitops.h>
+#include <linux/kthread.h>
+#include <linux/wait.h>
+#include <linux/vmalloc.h>
+#include <linux/jiffies.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/random.h>
+#include <linux/sched.h>
+#include <linux/ctype.h>
+#include <linux/uaccess.h>
+#include <linux/time.h>  /* for time_t */
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+
+#include "vchiq_if.h"
+
+typedef struct {
+	int size;
+	int read;
+	int write;
+
+	struct semaphore pop;
+	struct semaphore push;
+
+	VCHIQ_HEADER_T **storage;
+} VCHIU_QUEUE_T;
+
+extern int  vchiu_queue_init(VCHIU_QUEUE_T *queue, int size);
+extern void vchiu_queue_delete(VCHIU_QUEUE_T *queue);
+
+extern int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue);
+extern int vchiu_queue_is_full(VCHIU_QUEUE_T *queue);
+
+extern void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header);
+
+extern VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue);
+extern VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue);
+
+#endif
diff -Nur linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_version.c linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_version.c
--- linux-3.18.10/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_version.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_version.c	2015-03-26 11:46:51.088235219 +0100
@@ -0,0 +1,59 @@
+/**
+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "vchiq_build_info.h"
+#include <linux/broadcom/vc_debug_sym.h>
+
+VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_hostname, "dc4-arm-01" );
+VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_version, "9245b4c35b99b3870e1f7dc598c5692b3c66a6f0 (tainted)" );
+VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_time,    __TIME__ );
+VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_date,    __DATE__ );
+
+const char *vchiq_get_build_hostname( void )
+{
+   return vchiq_build_hostname;
+}
+
+const char *vchiq_get_build_version( void )
+{
+   return vchiq_build_version;
+}
+
+const char *vchiq_get_build_date( void )
+{
+   return vchiq_build_date;
+}
+
+const char *vchiq_get_build_time( void )
+{
+   return vchiq_build_time;
+}
diff -Nur linux-3.18.10/drivers/misc/vc04_services/Kconfig linux-rpi/drivers/misc/vc04_services/Kconfig
--- linux-3.18.10/drivers/misc/vc04_services/Kconfig	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/Kconfig	2015-03-26 11:46:50.996235135 +0100
@@ -0,0 +1,9 @@
+config BCM2708_VCHIQ
+	tristate "Videocore VCHIQ"
+	depends on MACH_BCM2708 || MACH_BCM2709
+	default y
+	help
+		Kernel to VideoCore communication interface for the
+		BCM2708 family of products.
+		Defaults to Y when the Broadcom Videocore services
+		are included in the build, N otherwise.
diff -Nur linux-3.18.10/drivers/misc/vc04_services/Makefile linux-rpi/drivers/misc/vc04_services/Makefile
--- linux-3.18.10/drivers/misc/vc04_services/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/misc/vc04_services/Makefile	2015-03-26 11:46:50.996235135 +0100
@@ -0,0 +1,14 @@
+obj-$(CONFIG_BCM2708_VCHIQ)	+= vchiq.o
+
+vchiq-objs := \
+   interface/vchiq_arm/vchiq_core.o  \
+   interface/vchiq_arm/vchiq_arm.o \
+   interface/vchiq_arm/vchiq_kern_lib.o \
+   interface/vchiq_arm/vchiq_2835_arm.o \
+   interface/vchiq_arm/vchiq_debugfs.o \
+   interface/vchiq_arm/vchiq_shim.o \
+   interface/vchiq_arm/vchiq_util.o \
+   interface/vchiq_arm/vchiq_connected.o \
+
+ccflags-y += -DVCOS_VERIFY_BKPTS=1 -Idrivers/misc/vc04_services -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000
+
diff -Nur linux-3.18.10/drivers/mmc/core/quirks.c linux-rpi/drivers/mmc/core/quirks.c
--- linux-3.18.10/drivers/mmc/core/quirks.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/mmc/core/quirks.c	2015-03-26 11:46:51.092235223 +0100
@@ -95,5 +95,9 @@
 			f->vendor_fixup(card, f->data);
 		}
 	}
+	/* SDHCI on BCM2708 - bug causes a certain sequence of CMD23 operations to fail.
+	 * Disable this flag for all cards (fall-back to CMD25/CMD18 multi-block transfers).
+	 */
+	card->quirks |= MMC_QUIRK_BLK_NO_CMD23;
 }
 EXPORT_SYMBOL(mmc_fixup_device);
diff -Nur linux-3.18.10/drivers/mmc/host/bcm2835-mmc.c linux-rpi/drivers/mmc/host/bcm2835-mmc.c
--- linux-3.18.10/drivers/mmc/host/bcm2835-mmc.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/mmc/host/bcm2835-mmc.c	2015-03-26 11:46:51.092235223 +0100
@@ -0,0 +1,1557 @@
+/*
+ * BCM2835 MMC host driver.
+ *
+ * Author:      Gellert Weisz <gellert@raspberrypi.org>
+ *              Copyright 2014
+ *
+ * Based on
+ *  sdhci-bcm2708.c by Broadcom
+ *  sdhci-bcm2835.c by Stephen Warren and Oleksandr Tymoshenko
+ *  sdhci.c and sdhci-pci.c by Pierre Ossman
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/sd.h>
+#include <linux/scatterlist.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/blkdev.h>
+#include <linux/dmaengine.h>
+#include <linux/dma-mapping.h>
+#include <linux/of_dma.h>
+
+#include "sdhci.h"
+
+
+#ifndef CONFIG_ARCH_BCM2835
+ #define BCM2835_CLOCK_FREQ 250000000
+#endif
+
+#define DRIVER_NAME "mmc-bcm2835"
+
+#define DBG(f, x...) \
+pr_debug(DRIVER_NAME " [%s()]: " f, __func__, ## x)
+
+#ifndef CONFIG_MMC_BCM2835_DMA
+ #define FORCE_PIO
+#endif
+
+
+/* the inclusive limit in bytes under which PIO will be used instead of DMA */
+#ifdef CONFIG_MMC_BCM2835_PIO_DMA_BARRIER
+#define PIO_DMA_BARRIER CONFIG_MMC_BCM2835_PIO_DMA_BARRIER
+#else
+#define PIO_DMA_BARRIER 00
+#endif
+
+#define MIN_FREQ 400000
+#define TIMEOUT_VAL 0xE
+#define BCM2835_SDHCI_WRITE_DELAY(f)	(((2 * 1000000) / f) + 1)
+
+#ifndef BCM2708_PERI_BASE
+ #define BCM2708_PERI_BASE 0x20000000
+#endif
+
+/* FIXME: Needs IOMMU support */
+#define BCM2835_VCMMU_SHIFT		(0x7E000000 - BCM2708_PERI_BASE)
+
+
+struct bcm2835_host {
+	spinlock_t				lock;
+
+	void __iomem			*ioaddr;
+	u32						phys_addr;
+
+	struct mmc_host			*mmc;
+
+	u32						timeout;
+
+	int						clock;	/* Current clock speed */
+	u8						pwr;	/* Current voltage */
+
+	unsigned int			max_clk;		/* Max possible freq */
+	unsigned int			timeout_clk;	/* Timeout freq (KHz) */
+	unsigned int			clk_mul;		/* Clock Muliplier value */
+
+	struct tasklet_struct	finish_tasklet;		/* Tasklet structures */
+
+	struct timer_list		timer;			/* Timer for timeouts */
+
+	struct sg_mapping_iter	sg_miter;		/* SG state for PIO */
+	unsigned int			blocks;			/* remaining PIO blocks */
+
+	int						irq;			/* Device IRQ */
+
+
+	u32						ier;			/* cached registers */
+
+	struct mmc_request		*mrq;			/* Current request */
+	struct mmc_command		*cmd;			/* Current command */
+	struct mmc_data			*data;			/* Current data request */
+	unsigned int			data_early:1;		/* Data finished before cmd */
+
+	wait_queue_head_t		buf_ready_int;		/* Waitqueue for Buffer Read Ready interrupt */
+
+	u32						thread_isr;
+
+	u32						shadow;
+
+	/*DMA part*/
+	struct dma_chan			*dma_chan_rx;		/* DMA channel for reads */
+	struct dma_chan			*dma_chan_tx;		/* DMA channel for writes */
+	struct dma_async_tx_descriptor	*tx_desc;	/* descriptor */
+
+	bool					have_dma;
+	bool					use_dma;
+	/*end of DMA part*/
+
+	int						max_delay;	/* maximum length of time spent waiting */
+
+	int						flags;				/* Host attributes */
+#define SDHCI_USE_SDMA		(1<<0)	/* Host is SDMA capable */
+#define SDHCI_USE_ADMA		(1<<1)	/* Host is ADMA capable */
+#define SDHCI_REQ_USE_DMA	(1<<2)	/* Use DMA for this req. */
+#define SDHCI_DEVICE_DEAD	(1<<3)	/* Device unresponsive */
+#define SDHCI_AUTO_CMD12	(1<<6)	/* Auto CMD12 support */
+#define SDHCI_AUTO_CMD23	(1<<7)	/* Auto CMD23 support */
+#define SDHCI_PV_ENABLED	(1<<8)	/* Preset value enabled */
+#define SDHCI_SDIO_IRQ_ENABLED	(1<<9)	/* SDIO irq enabled */
+#define SDHCI_USE_PLATDMA       (1<<12) /* Host uses 3rd party DMA */
+};
+
+
+static inline void bcm2835_mmc_writel(struct bcm2835_host *host, u32 val, int reg)
+{
+	writel(val, host->ioaddr + reg);
+	udelay(BCM2835_SDHCI_WRITE_DELAY(max(host->clock, MIN_FREQ)));
+}
+
+static inline void mmc_raw_writel(struct bcm2835_host *host, u32 val, int reg)
+{
+	writel(val, host->ioaddr + reg);
+}
+
+static inline u32 bcm2835_mmc_readl(struct bcm2835_host *host, int reg)
+{
+	return readl(host->ioaddr + reg);
+}
+
+static inline void bcm2835_mmc_writew(struct bcm2835_host *host, u16 val, int reg)
+{
+	u32 oldval = (reg == SDHCI_COMMAND) ? host->shadow :
+		bcm2835_mmc_readl(host, reg & ~3);
+	u32 word_num = (reg >> 1) & 1;
+	u32 word_shift = word_num * 16;
+	u32 mask = 0xffff << word_shift;
+	u32 newval = (oldval & ~mask) | (val << word_shift);
+
+	if (reg == SDHCI_TRANSFER_MODE)
+		host->shadow = newval;
+	else
+		bcm2835_mmc_writel(host, newval, reg & ~3);
+
+}
+
+static inline void bcm2835_mmc_writeb(struct bcm2835_host *host, u8 val, int reg)
+{
+	u32 oldval = bcm2835_mmc_readl(host, reg & ~3);
+	u32 byte_num = reg & 3;
+	u32 byte_shift = byte_num * 8;
+	u32 mask = 0xff << byte_shift;
+	u32 newval = (oldval & ~mask) | (val << byte_shift);
+
+	bcm2835_mmc_writel(host, newval, reg & ~3);
+}
+
+
+static inline u16 bcm2835_mmc_readw(struct bcm2835_host *host, int reg)
+{
+	u32 val = bcm2835_mmc_readl(host, (reg & ~3));
+	u32 word_num = (reg >> 1) & 1;
+	u32 word_shift = word_num * 16;
+	u32 word = (val >> word_shift) & 0xffff;
+
+	return word;
+}
+
+static inline u8 bcm2835_mmc_readb(struct bcm2835_host *host, int reg)
+{
+	u32 val = bcm2835_mmc_readl(host, (reg & ~3));
+	u32 byte_num = reg & 3;
+	u32 byte_shift = byte_num * 8;
+	u32 byte = (val >> byte_shift) & 0xff;
+
+	return byte;
+}
+
+static void bcm2835_mmc_unsignal_irqs(struct bcm2835_host *host, u32 clear)
+{
+	u32 ier;
+
+	ier = bcm2835_mmc_readl(host, SDHCI_SIGNAL_ENABLE);
+	ier &= ~clear;
+	/* change which requests generate IRQs - makes no difference to
+	   the content of SDHCI_INT_STATUS, or the need to acknowledge IRQs */
+	bcm2835_mmc_writel(host, ier, SDHCI_SIGNAL_ENABLE);
+}
+
+
+static void bcm2835_mmc_dumpregs(struct bcm2835_host *host)
+{
+	pr_debug(DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n",
+		mmc_hostname(host->mmc));
+
+	pr_debug(DRIVER_NAME ": Sys addr: 0x%08x | Version:  0x%08x\n",
+		bcm2835_mmc_readl(host, SDHCI_DMA_ADDRESS),
+		bcm2835_mmc_readw(host, SDHCI_HOST_VERSION));
+	pr_debug(DRIVER_NAME ": Blk size: 0x%08x | Blk cnt:  0x%08x\n",
+		bcm2835_mmc_readw(host, SDHCI_BLOCK_SIZE),
+		bcm2835_mmc_readw(host, SDHCI_BLOCK_COUNT));
+	pr_debug(DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
+		bcm2835_mmc_readl(host, SDHCI_ARGUMENT),
+		bcm2835_mmc_readw(host, SDHCI_TRANSFER_MODE));
+	pr_debug(DRIVER_NAME ": Present:  0x%08x | Host ctl: 0x%08x\n",
+		bcm2835_mmc_readl(host, SDHCI_PRESENT_STATE),
+		bcm2835_mmc_readb(host, SDHCI_HOST_CONTROL));
+	pr_debug(DRIVER_NAME ": Power:    0x%08x | Blk gap:  0x%08x\n",
+		bcm2835_mmc_readb(host, SDHCI_POWER_CONTROL),
+		bcm2835_mmc_readb(host, SDHCI_BLOCK_GAP_CONTROL));
+	pr_debug(DRIVER_NAME ": Wake-up:  0x%08x | Clock:    0x%08x\n",
+		bcm2835_mmc_readb(host, SDHCI_WAKE_UP_CONTROL),
+		bcm2835_mmc_readw(host, SDHCI_CLOCK_CONTROL));
+	pr_debug(DRIVER_NAME ": Timeout:  0x%08x | Int stat: 0x%08x\n",
+		bcm2835_mmc_readb(host, SDHCI_TIMEOUT_CONTROL),
+		bcm2835_mmc_readl(host, SDHCI_INT_STATUS));
+	pr_debug(DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
+		bcm2835_mmc_readl(host, SDHCI_INT_ENABLE),
+		bcm2835_mmc_readl(host, SDHCI_SIGNAL_ENABLE));
+	pr_debug(DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
+		bcm2835_mmc_readw(host, SDHCI_ACMD12_ERR),
+		bcm2835_mmc_readw(host, SDHCI_SLOT_INT_STATUS));
+	pr_debug(DRIVER_NAME ": Caps:     0x%08x | Caps_1:   0x%08x\n",
+		bcm2835_mmc_readl(host, SDHCI_CAPABILITIES),
+		bcm2835_mmc_readl(host, SDHCI_CAPABILITIES_1));
+	pr_debug(DRIVER_NAME ": Cmd:      0x%08x | Max curr: 0x%08x\n",
+		bcm2835_mmc_readw(host, SDHCI_COMMAND),
+		bcm2835_mmc_readl(host, SDHCI_MAX_CURRENT));
+	pr_debug(DRIVER_NAME ": Host ctl2: 0x%08x\n",
+		bcm2835_mmc_readw(host, SDHCI_HOST_CONTROL2));
+
+	pr_debug(DRIVER_NAME ": ===========================================\n");
+}
+
+
+static void bcm2835_mmc_reset(struct bcm2835_host *host, u8 mask)
+{
+	unsigned long timeout;
+
+	bcm2835_mmc_writeb(host, mask, SDHCI_SOFTWARE_RESET);
+
+	if (mask & SDHCI_RESET_ALL)
+		host->clock = 0;
+
+	/* Wait max 100 ms */
+	timeout = 100;
+
+	/* hw clears the bit when it's done */
+	while (bcm2835_mmc_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
+		if (timeout == 0) {
+			pr_err("%s: Reset 0x%x never completed.\n",
+				mmc_hostname(host->mmc), (int)mask);
+			bcm2835_mmc_dumpregs(host);
+			return;
+		}
+		timeout--;
+		mdelay(1);
+	}
+
+	if (100-timeout > 10 && 100-timeout > host->max_delay) {
+		host->max_delay = 100-timeout;
+		pr_warning("Warning: MMC controller hung for %d ms\n", host->max_delay);
+	}
+}
+
+static void bcm2835_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
+
+static void bcm2835_mmc_init(struct bcm2835_host *host, int soft)
+{
+	if (soft)
+		bcm2835_mmc_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA);
+	else
+		bcm2835_mmc_reset(host, SDHCI_RESET_ALL);
+
+	host->ier = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
+		    SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT |
+		    SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC |
+		    SDHCI_INT_TIMEOUT | SDHCI_INT_DATA_END |
+		    SDHCI_INT_RESPONSE;
+
+	bcm2835_mmc_writel(host, host->ier, SDHCI_INT_ENABLE);
+	bcm2835_mmc_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
+
+	if (soft) {
+		/* force clock reconfiguration */
+		host->clock = 0;
+		bcm2835_mmc_set_ios(host->mmc, &host->mmc->ios);
+	}
+}
+
+
+
+static void bcm2835_mmc_finish_data(struct bcm2835_host *host);
+
+static void bcm2835_mmc_dma_complete(void *param)
+{
+	struct bcm2835_host *host = param;
+	struct dma_chan *dma_chan;
+	unsigned long flags;
+	u32 dir_data;
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	if (host->data && !(host->data->flags & MMC_DATA_WRITE)) {
+		/* otherwise handled in SDHCI IRQ */
+		dma_chan = host->dma_chan_rx;
+		dir_data = DMA_FROM_DEVICE;
+
+		dma_unmap_sg(dma_chan->device->dev,
+		     host->data->sg, host->data->sg_len,
+		     dir_data);
+
+		bcm2835_mmc_finish_data(host);
+	}
+
+	spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static void bcm2835_bcm2835_mmc_read_block_pio(struct bcm2835_host *host)
+{
+	unsigned long flags;
+	size_t blksize, len, chunk;
+
+	u32 uninitialized_var(scratch);
+	u8 *buf;
+
+	blksize = host->data->blksz;
+	chunk = 0;
+
+	local_irq_save(flags);
+
+	while (blksize) {
+		if (!sg_miter_next(&host->sg_miter))
+			BUG();
+
+		len = min(host->sg_miter.length, blksize);
+
+		blksize -= len;
+		host->sg_miter.consumed = len;
+
+		buf = host->sg_miter.addr;
+
+		while (len) {
+			if (chunk == 0) {
+				scratch = bcm2835_mmc_readl(host, SDHCI_BUFFER);
+				chunk = 4;
+			}
+
+			*buf = scratch & 0xFF;
+
+			buf++;
+			scratch >>= 8;
+			chunk--;
+			len--;
+		}
+	}
+
+	sg_miter_stop(&host->sg_miter);
+
+	local_irq_restore(flags);
+}
+
+static void bcm2835_bcm2835_mmc_write_block_pio(struct bcm2835_host *host)
+{
+	unsigned long flags;
+	size_t blksize, len, chunk;
+	u32 scratch;
+	u8 *buf;
+
+	blksize = host->data->blksz;
+	chunk = 0;
+	chunk = 0;
+	scratch = 0;
+
+	local_irq_save(flags);
+
+	while (blksize) {
+		if (!sg_miter_next(&host->sg_miter))
+			BUG();
+
+		len = min(host->sg_miter.length, blksize);
+
+		blksize -= len;
+		host->sg_miter.consumed = len;
+
+		buf = host->sg_miter.addr;
+
+		while (len) {
+			scratch |= (u32)*buf << (chunk * 8);
+
+			buf++;
+			chunk++;
+			len--;
+
+			if ((chunk == 4) || ((len == 0) && (blksize == 0))) {
+				mmc_raw_writel(host, scratch, SDHCI_BUFFER);
+				chunk = 0;
+				scratch = 0;
+			}
+		}
+	}
+
+	sg_miter_stop(&host->sg_miter);
+
+	local_irq_restore(flags);
+}
+
+
+static void bcm2835_mmc_transfer_pio(struct bcm2835_host *host)
+{
+	u32 mask;
+
+	BUG_ON(!host->data);
+
+	if (host->blocks == 0)
+		return;
+
+	if (host->data->flags & MMC_DATA_READ)
+		mask = SDHCI_DATA_AVAILABLE;
+	else
+		mask = SDHCI_SPACE_AVAILABLE;
+
+	while (bcm2835_mmc_readl(host, SDHCI_PRESENT_STATE) & mask) {
+
+		if (host->data->flags & MMC_DATA_READ)
+			bcm2835_bcm2835_mmc_read_block_pio(host);
+		else
+			bcm2835_bcm2835_mmc_write_block_pio(host);
+
+		host->blocks--;
+
+		/* QUIRK used in sdhci.c removes the 'if' */
+		/* but it seems this is unnecessary */
+		if (host->blocks == 0)
+			break;
+
+
+	}
+}
+
+
+static void bcm2835_mmc_transfer_dma(struct bcm2835_host *host)
+{
+	u32 len, dir_data, dir_slave;
+	struct dma_async_tx_descriptor *desc = NULL;
+	struct dma_chan *dma_chan;
+
+
+	WARN_ON(!host->data);
+
+	if (!host->data)
+		return;
+
+	if (host->blocks == 0)
+		return;
+
+	if (host->data->flags & MMC_DATA_READ) {
+		dma_chan = host->dma_chan_rx;
+		dir_data = DMA_FROM_DEVICE;
+		dir_slave = DMA_DEV_TO_MEM;
+	} else {
+		dma_chan = host->dma_chan_tx;
+		dir_data = DMA_TO_DEVICE;
+		dir_slave = DMA_MEM_TO_DEV;
+	}
+
+	BUG_ON(!dma_chan->device);
+	BUG_ON(!dma_chan->device->dev);
+	BUG_ON(!host->data->sg);
+
+	len = dma_map_sg(dma_chan->device->dev, host->data->sg,
+			 host->data->sg_len, dir_data);
+	if (len > 0) {
+		desc = dmaengine_prep_slave_sg(dma_chan, host->data->sg,
+					       len, dir_slave,
+					       DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+	} else {
+		dev_err(mmc_dev(host->mmc), "dma_map_sg returned zero length\n");
+	}
+	if (desc) {
+		bcm2835_mmc_unsignal_irqs(host, SDHCI_INT_DATA_AVAIL |
+						    SDHCI_INT_SPACE_AVAIL);
+		host->tx_desc = desc;
+		desc->callback = bcm2835_mmc_dma_complete;
+		desc->callback_param = host;
+		dmaengine_submit(desc);
+		dma_async_issue_pending(dma_chan);
+	}
+
+}
+
+
+
+static void bcm2835_mmc_set_transfer_irqs(struct bcm2835_host *host)
+{
+	u32 pio_irqs = SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL;
+	u32 dma_irqs = SDHCI_INT_DMA_END | SDHCI_INT_ADMA_ERROR;
+
+	if (host->use_dma)
+		host->ier = (host->ier & ~pio_irqs) | dma_irqs;
+	else
+		host->ier = (host->ier & ~dma_irqs) | pio_irqs;
+
+	bcm2835_mmc_writel(host, host->ier, SDHCI_INT_ENABLE);
+	bcm2835_mmc_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
+}
+
+
+static void bcm2835_mmc_prepare_data(struct bcm2835_host *host, struct mmc_command *cmd)
+{
+	u8 count;
+	struct mmc_data *data = cmd->data;
+
+	WARN_ON(host->data);
+
+	if (data || (cmd->flags & MMC_RSP_BUSY)) {
+		count = TIMEOUT_VAL;
+		bcm2835_mmc_writeb(host, count, SDHCI_TIMEOUT_CONTROL);
+	}
+
+	if (!data)
+		return;
+
+	/* Sanity checks */
+	BUG_ON(data->blksz * data->blocks > 524288);
+	BUG_ON(data->blksz > host->mmc->max_blk_size);
+	BUG_ON(data->blocks > 65535);
+
+	host->data = data;
+	host->data_early = 0;
+	host->data->bytes_xfered = 0;
+
+
+	if (!(host->flags & SDHCI_REQ_USE_DMA)) {
+		int flags;
+
+		flags = SG_MITER_ATOMIC;
+		if (host->data->flags & MMC_DATA_READ)
+			flags |= SG_MITER_TO_SG;
+		else
+			flags |= SG_MITER_FROM_SG;
+		sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
+		host->blocks = data->blocks;
+	}
+
+	host->use_dma = host->have_dma && data->blocks > PIO_DMA_BARRIER;
+
+	bcm2835_mmc_set_transfer_irqs(host);
+
+	/* Set the DMA boundary value and block size */
+	bcm2835_mmc_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG,
+		data->blksz), SDHCI_BLOCK_SIZE);
+	bcm2835_mmc_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
+
+	BUG_ON(!host->data);
+}
+
+static void bcm2835_mmc_set_transfer_mode(struct bcm2835_host *host,
+	struct mmc_command *cmd)
+{
+	u16 mode;
+	struct mmc_data *data = cmd->data;
+
+	if (data == NULL) {
+		/* clear Auto CMD settings for no data CMDs */
+		mode = bcm2835_mmc_readw(host, SDHCI_TRANSFER_MODE);
+		bcm2835_mmc_writew(host, mode & ~(SDHCI_TRNS_AUTO_CMD12 |
+				SDHCI_TRNS_AUTO_CMD23), SDHCI_TRANSFER_MODE);
+		return;
+	}
+
+	WARN_ON(!host->data);
+
+	mode = SDHCI_TRNS_BLK_CNT_EN;
+
+	if ((mmc_op_multi(cmd->opcode) || data->blocks > 1)) {
+		mode |= SDHCI_TRNS_MULTI;
+
+		/*
+		 * If we are sending CMD23, CMD12 never gets sent
+		 * on successful completion (so no Auto-CMD12).
+		 */
+		if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12))
+			mode |= SDHCI_TRNS_AUTO_CMD12;
+		else if (host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
+			mode |= SDHCI_TRNS_AUTO_CMD23;
+			bcm2835_mmc_writel(host, host->mrq->sbc->arg, SDHCI_ARGUMENT2);
+		}
+	}
+
+	if (data->flags & MMC_DATA_READ)
+		mode |= SDHCI_TRNS_READ;
+	if (host->flags & SDHCI_REQ_USE_DMA)
+		mode |= SDHCI_TRNS_DMA;
+
+	bcm2835_mmc_writew(host, mode, SDHCI_TRANSFER_MODE);
+}
+
+void bcm2835_mmc_send_command(struct bcm2835_host *host, struct mmc_command *cmd)
+{
+	int flags;
+	u32 mask;
+	unsigned long timeout;
+
+	WARN_ON(host->cmd);
+
+	/* Wait max 10 ms */
+	timeout = 1000;
+
+	mask = SDHCI_CMD_INHIBIT;
+	if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY))
+		mask |= SDHCI_DATA_INHIBIT;
+
+	/* We shouldn't wait for data inihibit for stop commands, even
+	   though they might use busy signaling */
+	if (host->mrq->data && (cmd == host->mrq->data->stop))
+		mask &= ~SDHCI_DATA_INHIBIT;
+
+	while (bcm2835_mmc_readl(host, SDHCI_PRESENT_STATE) & mask) {
+		if (timeout == 0) {
+			pr_err("%s: Controller never released inhibit bit(s).\n",
+				mmc_hostname(host->mmc));
+			bcm2835_mmc_dumpregs(host);
+			cmd->error = -EIO;
+			tasklet_schedule(&host->finish_tasklet);
+			return;
+		}
+		timeout--;
+		udelay(10);
+	}
+
+	if ((1000-timeout)/100 > 1 && (1000-timeout)/100 > host->max_delay) {
+		host->max_delay = (1000-timeout)/100;
+		pr_warning("Warning: MMC controller hung for %d ms\n", host->max_delay);
+	}
+
+	timeout = jiffies;
+#ifdef CONFIG_ARCH_BCM2835
+	if (!cmd->data && cmd->busy_timeout > 9000)
+		timeout += DIV_ROUND_UP(cmd->busy_timeout, 1000) * HZ + HZ;
+	else
+#endif
+	timeout += 10 * HZ;
+	mod_timer(&host->timer, timeout);
+
+	host->cmd = cmd;
+
+	bcm2835_mmc_prepare_data(host, cmd);
+
+	bcm2835_mmc_writel(host, cmd->arg, SDHCI_ARGUMENT);
+
+	bcm2835_mmc_set_transfer_mode(host, cmd);
+
+	if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
+		pr_err("%s: Unsupported response type!\n",
+			mmc_hostname(host->mmc));
+		cmd->error = -EINVAL;
+		tasklet_schedule(&host->finish_tasklet);
+		return;
+	}
+
+	if (!(cmd->flags & MMC_RSP_PRESENT))
+		flags = SDHCI_CMD_RESP_NONE;
+	else if (cmd->flags & MMC_RSP_136)
+		flags = SDHCI_CMD_RESP_LONG;
+	else if (cmd->flags & MMC_RSP_BUSY)
+		flags = SDHCI_CMD_RESP_SHORT_BUSY;
+	else
+		flags = SDHCI_CMD_RESP_SHORT;
+
+	if (cmd->flags & MMC_RSP_CRC)
+		flags |= SDHCI_CMD_CRC;
+	if (cmd->flags & MMC_RSP_OPCODE)
+		flags |= SDHCI_CMD_INDEX;
+
+	if (cmd->data)
+		flags |= SDHCI_CMD_DATA;
+
+	bcm2835_mmc_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);
+}
+
+
+static void bcm2835_mmc_finish_data(struct bcm2835_host *host)
+{
+	struct mmc_data *data;
+
+	BUG_ON(!host->data);
+
+	data = host->data;
+	host->data = NULL;
+
+	if (data->error)
+		data->bytes_xfered = 0;
+	else
+		data->bytes_xfered = data->blksz * data->blocks;
+
+	/*
+	 * Need to send CMD12 if -
+	 * a) open-ended multiblock transfer (no CMD23)
+	 * b) error in multiblock transfer
+	 */
+	if (data->stop &&
+	    (data->error ||
+	     !host->mrq->sbc)) {
+
+		/*
+		 * The controller needs a reset of internal state machines
+		 * upon error conditions.
+		 */
+		if (data->error) {
+			bcm2835_mmc_reset(host, SDHCI_RESET_CMD);
+			bcm2835_mmc_reset(host, SDHCI_RESET_DATA);
+		}
+
+		bcm2835_mmc_send_command(host, data->stop);
+	} else
+		tasklet_schedule(&host->finish_tasklet);
+}
+
+static void bcm2835_mmc_finish_command(struct bcm2835_host *host)
+{
+	int i;
+
+	BUG_ON(host->cmd == NULL);
+
+	if (host->cmd->flags & MMC_RSP_PRESENT) {
+		if (host->cmd->flags & MMC_RSP_136) {
+			/* CRC is stripped so we need to do some shifting. */
+			for (i = 0; i < 4; i++) {
+				host->cmd->resp[i] = bcm2835_mmc_readl(host,
+					SDHCI_RESPONSE + (3-i)*4) << 8;
+				if (i != 3)
+					host->cmd->resp[i] |=
+						bcm2835_mmc_readb(host,
+						SDHCI_RESPONSE + (3-i)*4-1);
+			}
+		} else {
+			host->cmd->resp[0] = bcm2835_mmc_readl(host, SDHCI_RESPONSE);
+		}
+	}
+
+	host->cmd->error = 0;
+
+	/* Finished CMD23, now send actual command. */
+	if (host->cmd == host->mrq->sbc) {
+		host->cmd = NULL;
+		bcm2835_mmc_send_command(host, host->mrq->cmd);
+
+		if (host->mrq->cmd->data && host->use_dma) {
+			/* DMA transfer starts now, PIO starts after interrupt */
+			bcm2835_mmc_transfer_dma(host);
+		}
+	} else {
+
+		/* Processed actual command. */
+		if (host->data && host->data_early)
+			bcm2835_mmc_finish_data(host);
+
+		if (!host->cmd->data)
+			tasklet_schedule(&host->finish_tasklet);
+
+		host->cmd = NULL;
+	}
+}
+
+
+static void bcm2835_mmc_timeout_timer(unsigned long data)
+{
+	struct bcm2835_host *host;
+	unsigned long flags;
+
+	host = (struct bcm2835_host *)data;
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	if (host->mrq) {
+		pr_err("%s: Timeout waiting for hardware interrupt.\n",
+			mmc_hostname(host->mmc));
+		bcm2835_mmc_dumpregs(host);
+
+		if (host->data) {
+			host->data->error = -ETIMEDOUT;
+			bcm2835_mmc_finish_data(host);
+		} else {
+			if (host->cmd)
+				host->cmd->error = -ETIMEDOUT;
+			else
+				host->mrq->cmd->error = -ETIMEDOUT;
+
+			tasklet_schedule(&host->finish_tasklet);
+		}
+	}
+
+	mmiowb();
+	spin_unlock_irqrestore(&host->lock, flags);
+}
+
+
+static void bcm2835_mmc_enable_sdio_irq_nolock(struct bcm2835_host *host, int enable)
+{
+	if (!(host->flags & SDHCI_DEVICE_DEAD)) {
+		if (enable)
+			host->ier |= SDHCI_INT_CARD_INT;
+		else
+			host->ier &= ~SDHCI_INT_CARD_INT;
+
+		bcm2835_mmc_writel(host, host->ier, SDHCI_INT_ENABLE);
+		bcm2835_mmc_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
+		mmiowb();
+	}
+}
+
+static void bcm2835_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+	struct bcm2835_host *host = mmc_priv(mmc);
+	unsigned long flags;
+
+	spin_lock_irqsave(&host->lock, flags);
+	if (enable)
+		host->flags |= SDHCI_SDIO_IRQ_ENABLED;
+	else
+		host->flags &= ~SDHCI_SDIO_IRQ_ENABLED;
+
+	bcm2835_mmc_enable_sdio_irq_nolock(host, enable);
+	spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static void bcm2835_mmc_cmd_irq(struct bcm2835_host *host, u32 intmask)
+{
+
+	BUG_ON(intmask == 0);
+
+	if (!host->cmd) {
+		pr_err("%s: Got command interrupt 0x%08x even "
+			"though no command operation was in progress.\n",
+			mmc_hostname(host->mmc), (unsigned)intmask);
+		bcm2835_mmc_dumpregs(host);
+		return;
+	}
+
+	if (intmask & SDHCI_INT_TIMEOUT)
+		host->cmd->error = -ETIMEDOUT;
+	else if (intmask & (SDHCI_INT_CRC | SDHCI_INT_END_BIT |
+			SDHCI_INT_INDEX)) {
+			host->cmd->error = -EILSEQ;
+	}
+
+	if (host->cmd->error) {
+		tasklet_schedule(&host->finish_tasklet);
+		return;
+	}
+
+	if (intmask & SDHCI_INT_RESPONSE)
+		bcm2835_mmc_finish_command(host);
+
+}
+
+static void bcm2835_mmc_data_irq(struct bcm2835_host *host, u32 intmask)
+{
+	struct dma_chan *dma_chan;
+	u32 dir_data;
+
+	BUG_ON(intmask == 0);
+
+	if (!host->data) {
+		/*
+		 * The "data complete" interrupt is also used to
+		 * indicate that a busy state has ended. See comment
+		 * above in sdhci_cmd_irq().
+		 */
+		if (host->cmd && (host->cmd->flags & MMC_RSP_BUSY)) {
+			if (intmask & SDHCI_INT_DATA_END) {
+				bcm2835_mmc_finish_command(host);
+				return;
+			}
+		}
+
+		pr_debug("%s: Got data interrupt 0x%08x even "
+			"though no data operation was in progress.\n",
+			mmc_hostname(host->mmc), (unsigned)intmask);
+		bcm2835_mmc_dumpregs(host);
+
+		return;
+	}
+
+	if (intmask & SDHCI_INT_DATA_TIMEOUT)
+		host->data->error = -ETIMEDOUT;
+	else if (intmask & SDHCI_INT_DATA_END_BIT)
+		host->data->error = -EILSEQ;
+	else if ((intmask & SDHCI_INT_DATA_CRC) &&
+		SDHCI_GET_CMD(bcm2835_mmc_readw(host, SDHCI_COMMAND))
+			!= MMC_BUS_TEST_R)
+		host->data->error = -EILSEQ;
+
+	if (host->use_dma) {
+		if  (host->data->flags & MMC_DATA_WRITE) {
+			/* IRQ handled here */
+
+			dma_chan = host->dma_chan_tx;
+			dir_data = DMA_TO_DEVICE;
+			dma_unmap_sg(dma_chan->device->dev,
+				 host->data->sg, host->data->sg_len,
+				 dir_data);
+
+			bcm2835_mmc_finish_data(host);
+		}
+
+	} else {
+		if (host->data->error)
+			bcm2835_mmc_finish_data(host);
+		else {
+			if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL))
+				bcm2835_mmc_transfer_pio(host);
+
+			if (intmask & SDHCI_INT_DATA_END) {
+				if (host->cmd) {
+					/*
+					 * Data managed to finish before the
+					 * command completed. Make sure we do
+					 * things in the proper order.
+					 */
+					host->data_early = 1;
+				} else {
+					bcm2835_mmc_finish_data(host);
+				}
+			}
+		}
+	}
+}
+
+
+static irqreturn_t bcm2835_mmc_irq(int irq, void *dev_id)
+{
+	irqreturn_t result = IRQ_NONE;
+	struct bcm2835_host *host = dev_id;
+	u32 intmask, mask, unexpected = 0;
+	int max_loops = 16;
+#ifndef CONFIG_ARCH_BCM2835
+	int cardint = 0;
+#endif
+
+	spin_lock(&host->lock);
+
+	intmask = bcm2835_mmc_readl(host, SDHCI_INT_STATUS);
+
+	if (!intmask || intmask == 0xffffffff) {
+		result = IRQ_NONE;
+		goto out;
+	}
+
+	do {
+		/* Clear selected interrupts. */
+		mask = intmask & (SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK |
+				  SDHCI_INT_BUS_POWER);
+		bcm2835_mmc_writel(host, mask, SDHCI_INT_STATUS);
+
+
+		if (intmask & SDHCI_INT_CMD_MASK)
+			bcm2835_mmc_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK);
+
+		if (intmask & SDHCI_INT_DATA_MASK)
+			bcm2835_mmc_data_irq(host, intmask & SDHCI_INT_DATA_MASK);
+
+		if (intmask & SDHCI_INT_BUS_POWER)
+			pr_err("%s: Card is consuming too much power!\n",
+				mmc_hostname(host->mmc));
+
+		if (intmask & SDHCI_INT_CARD_INT) {
+#ifndef CONFIG_ARCH_BCM2835
+			cardint = 1;
+#else
+			bcm2835_mmc_enable_sdio_irq_nolock(host, false);
+			host->thread_isr |= SDHCI_INT_CARD_INT;
+			result = IRQ_WAKE_THREAD;
+#endif
+		}
+
+		intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE |
+			     SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK |
+			     SDHCI_INT_ERROR | SDHCI_INT_BUS_POWER |
+			     SDHCI_INT_CARD_INT);
+
+		if (intmask) {
+			unexpected |= intmask;
+			bcm2835_mmc_writel(host, intmask, SDHCI_INT_STATUS);
+		}
+
+		if (result == IRQ_NONE)
+			result = IRQ_HANDLED;
+
+		intmask = bcm2835_mmc_readl(host, SDHCI_INT_STATUS);
+	} while (intmask && --max_loops);
+out:
+	spin_unlock(&host->lock);
+
+	if (unexpected) {
+		pr_err("%s: Unexpected interrupt 0x%08x.\n",
+			   mmc_hostname(host->mmc), unexpected);
+		bcm2835_mmc_dumpregs(host);
+	}
+
+#ifndef CONFIG_ARCH_BCM2835
+	if (cardint)
+		mmc_signal_sdio_irq(host->mmc);
+#endif
+
+	return result;
+}
+
+#ifdef CONFIG_ARCH_BCM2835
+static irqreturn_t bcm2835_mmc_thread_irq(int irq, void *dev_id)
+{
+	struct bcm2835_host *host = dev_id;
+	unsigned long flags;
+	u32 isr;
+
+	spin_lock_irqsave(&host->lock, flags);
+	isr = host->thread_isr;
+	host->thread_isr = 0;
+	spin_unlock_irqrestore(&host->lock, flags);
+
+	if (isr & SDHCI_INT_CARD_INT) {
+		sdio_run_irqs(host->mmc);
+
+		spin_lock_irqsave(&host->lock, flags);
+		if (host->flags & SDHCI_SDIO_IRQ_ENABLED)
+			bcm2835_mmc_enable_sdio_irq_nolock(host, true);
+		spin_unlock_irqrestore(&host->lock, flags);
+	}
+
+	return isr ? IRQ_HANDLED : IRQ_NONE;
+}
+#endif
+
+
+
+void bcm2835_mmc_set_clock(struct bcm2835_host *host, unsigned int clock)
+{
+	int div = 0; /* Initialized for compiler warning */
+	int real_div = div, clk_mul = 1;
+	u16 clk = 0;
+	unsigned long timeout;
+
+
+	host->mmc->actual_clock = 0;
+
+	bcm2835_mmc_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+	if (clock == 0)
+		return;
+
+	/* Version 3.00 divisors must be a multiple of 2. */
+	if (host->max_clk <= clock)
+		div = 1;
+	else {
+		for (div = 2; div < SDHCI_MAX_DIV_SPEC_300;
+			 div += 2) {
+			if ((host->max_clk / div) <= clock)
+				break;
+		}
+	}
+
+	real_div = div;
+	div >>= 1;
+
+	if (real_div)
+		host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div;
+
+	clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
+	clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
+		<< SDHCI_DIVIDER_HI_SHIFT;
+	clk |= SDHCI_CLOCK_INT_EN;
+	bcm2835_mmc_writew(host, clk, SDHCI_CLOCK_CONTROL);
+
+	/* Wait max 20 ms */
+	timeout = 20;
+	while (!((clk = bcm2835_mmc_readw(host, SDHCI_CLOCK_CONTROL))
+		& SDHCI_CLOCK_INT_STABLE)) {
+		if (timeout == 0) {
+			pr_err("%s: Internal clock never "
+				"stabilised.\n", mmc_hostname(host->mmc));
+			bcm2835_mmc_dumpregs(host);
+			return;
+		}
+		timeout--;
+		mdelay(1);
+	}
+
+	if (20-timeout > 10 && 20-timeout > host->max_delay) {
+		host->max_delay = 20-timeout;
+		pr_warning("Warning: MMC controller hung for %d ms\n", host->max_delay);
+	}
+
+	clk |= SDHCI_CLOCK_CARD_EN;
+	bcm2835_mmc_writew(host, clk, SDHCI_CLOCK_CONTROL);
+}
+
+static void bcm2835_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+	struct bcm2835_host *host;
+	unsigned long flags;
+
+	host = mmc_priv(mmc);
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	WARN_ON(host->mrq != NULL);
+
+	host->mrq = mrq;
+
+	if (mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23))
+		bcm2835_mmc_send_command(host, mrq->sbc);
+	else
+		bcm2835_mmc_send_command(host, mrq->cmd);
+
+	mmiowb();
+	spin_unlock_irqrestore(&host->lock, flags);
+
+	if (!(mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23)) && mrq->cmd->data && host->use_dma) {
+		/* DMA transfer starts now, PIO starts after interrupt */
+		bcm2835_mmc_transfer_dma(host);
+	}
+}
+
+
+static void bcm2835_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+
+	struct bcm2835_host *host = mmc_priv(mmc);
+	unsigned long flags;
+	u8 ctrl;
+	u16 clk, ctrl_2;
+
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	if (!ios->clock || ios->clock != host->clock) {
+		bcm2835_mmc_set_clock(host, ios->clock);
+		host->clock = ios->clock;
+	}
+
+	if (host->pwr != SDHCI_POWER_330) {
+		host->pwr = SDHCI_POWER_330;
+		bcm2835_mmc_writeb(host, SDHCI_POWER_330 | SDHCI_POWER_ON, SDHCI_POWER_CONTROL);
+	}
+
+	ctrl = bcm2835_mmc_readb(host, SDHCI_HOST_CONTROL);
+
+	/* set bus width */
+	ctrl &= ~SDHCI_CTRL_8BITBUS;
+	if (ios->bus_width == MMC_BUS_WIDTH_4)
+		ctrl |= SDHCI_CTRL_4BITBUS;
+	else
+		ctrl &= ~SDHCI_CTRL_4BITBUS;
+
+	ctrl &= ~SDHCI_CTRL_HISPD; /* NO_HISPD_BIT */
+
+
+	bcm2835_mmc_writeb(host, ctrl, SDHCI_HOST_CONTROL);
+	/*
+	 * We only need to set Driver Strength if the
+	 * preset value enable is not set.
+	 */
+	ctrl_2 = bcm2835_mmc_readw(host, SDHCI_HOST_CONTROL2);
+	ctrl_2 &= ~SDHCI_CTRL_DRV_TYPE_MASK;
+	if (ios->drv_type == MMC_SET_DRIVER_TYPE_A)
+		ctrl_2 |= SDHCI_CTRL_DRV_TYPE_A;
+	else if (ios->drv_type == MMC_SET_DRIVER_TYPE_C)
+		ctrl_2 |= SDHCI_CTRL_DRV_TYPE_C;
+
+	bcm2835_mmc_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
+
+	/* Reset SD Clock Enable */
+	clk = bcm2835_mmc_readw(host, SDHCI_CLOCK_CONTROL);
+	clk &= ~SDHCI_CLOCK_CARD_EN;
+	bcm2835_mmc_writew(host, clk, SDHCI_CLOCK_CONTROL);
+
+	/* Re-enable SD Clock */
+	bcm2835_mmc_set_clock(host, host->clock);
+	bcm2835_mmc_writeb(host, ctrl, SDHCI_HOST_CONTROL);
+
+	mmiowb();
+
+	spin_unlock_irqrestore(&host->lock, flags);
+}
+
+
+static struct mmc_host_ops bcm2835_ops = {
+	.request = bcm2835_mmc_request,
+	.set_ios = bcm2835_mmc_set_ios,
+	.enable_sdio_irq = bcm2835_mmc_enable_sdio_irq,
+};
+
+
+static void bcm2835_mmc_tasklet_finish(unsigned long param)
+{
+	struct bcm2835_host *host;
+	unsigned long flags;
+	struct mmc_request *mrq;
+
+	host = (struct bcm2835_host *)param;
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	/*
+	 * If this tasklet gets rescheduled while running, it will
+	 * be run again afterwards but without any active request.
+	 */
+	if (!host->mrq) {
+		spin_unlock_irqrestore(&host->lock, flags);
+		return;
+	}
+
+	del_timer(&host->timer);
+
+	mrq = host->mrq;
+
+	/*
+	 * The controller needs a reset of internal state machines
+	 * upon error conditions.
+	 */
+	if (!(host->flags & SDHCI_DEVICE_DEAD) &&
+	    ((mrq->cmd && mrq->cmd->error) ||
+		 (mrq->data && (mrq->data->error ||
+		  (mrq->data->stop && mrq->data->stop->error))))) {
+
+		bcm2835_mmc_reset(host, SDHCI_RESET_CMD);
+		bcm2835_mmc_reset(host, SDHCI_RESET_DATA);
+	}
+
+	host->mrq = NULL;
+	host->cmd = NULL;
+	host->data = NULL;
+
+	mmiowb();
+
+	spin_unlock_irqrestore(&host->lock, flags);
+	mmc_request_done(host->mmc, mrq);
+}
+
+
+
+int bcm2835_mmc_add_host(struct bcm2835_host *host)
+{
+	struct mmc_host *mmc;
+#ifndef FORCE_PIO
+	struct dma_slave_config cfg;
+#endif
+	int ret;
+
+	mmc = host->mmc;
+
+	bcm2835_mmc_reset(host, SDHCI_RESET_ALL);
+
+	host->clk_mul = 0;
+
+	mmc->ops = &bcm2835_ops;
+	mmc->f_max = host->max_clk;
+	mmc->f_max = host->max_clk;
+	mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300;
+
+	/* SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK */
+	host->timeout_clk = mmc->f_max / 1000;
+#ifdef CONFIG_ARCH_BCM2835
+	mmc->max_busy_timeout = (1 << 27) / host->timeout_clk;
+#endif
+	/* host controller capabilities */
+	mmc->caps = MMC_CAP_CMD23 | MMC_CAP_ERASE | MMC_CAP_NEEDS_POLL | MMC_CAP_SDIO_IRQ |
+	MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED | MMC_CAP_4_BIT_DATA;
+
+	host->flags = SDHCI_AUTO_CMD23;
+
+	spin_lock_init(&host->lock);
+
+
+#ifdef FORCE_PIO
+	pr_info("Forcing PIO mode\n");
+	host->have_dma = false;
+#else
+	if (!host->dma_chan_tx || !host->dma_chan_rx ||
+	IS_ERR(host->dma_chan_tx) || IS_ERR(host->dma_chan_rx)) {
+		pr_err("%s: Unable to initialise DMA channels. Falling back to PIO\n", DRIVER_NAME);
+		host->have_dma = false;
+	} else {
+		pr_info("DMA channels allocated for the MMC driver");
+		host->have_dma = true;
+
+		cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+		cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+		cfg.slave_id = 11;		/* DREQ channel */
+
+		cfg.direction = DMA_MEM_TO_DEV;
+		cfg.src_addr = 0;
+		cfg.dst_addr = host->phys_addr + SDHCI_BUFFER;
+		ret = dmaengine_slave_config(host->dma_chan_tx, &cfg);
+
+		cfg.direction = DMA_DEV_TO_MEM;
+		cfg.src_addr = host->phys_addr + SDHCI_BUFFER;
+		cfg.dst_addr = 0;
+		ret = dmaengine_slave_config(host->dma_chan_rx, &cfg);
+	}
+#endif
+
+
+	mmc->max_segs = 128;
+	mmc->max_req_size = 524288;
+	mmc->max_seg_size = mmc->max_req_size;
+	mmc->max_blk_size = 512;
+	mmc->max_blk_count =  65535;
+
+	/* report supported voltage ranges */
+	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+
+	tasklet_init(&host->finish_tasklet,
+		bcm2835_mmc_tasklet_finish, (unsigned long)host);
+
+	setup_timer(&host->timer, bcm2835_mmc_timeout_timer, (unsigned long)host);
+	init_waitqueue_head(&host->buf_ready_int);
+
+	bcm2835_mmc_init(host, 0);
+#ifndef CONFIG_ARCH_BCM2835
+	ret = request_irq(host->irq, bcm2835_mmc_irq, 0 /*IRQF_SHARED*/,
+				  mmc_hostname(mmc), host);
+#else
+	ret = request_threaded_irq(host->irq, bcm2835_mmc_irq, bcm2835_mmc_thread_irq,
+				   IRQF_SHARED,	mmc_hostname(mmc), host);
+#endif
+	if (ret) {
+		pr_err("%s: Failed to request IRQ %d: %d\n",
+		       mmc_hostname(mmc), host->irq, ret);
+		goto untasklet;
+	}
+
+	mmiowb();
+	mmc_add_host(mmc);
+
+	pr_info("Load BCM2835 MMC driver\n");
+
+	return 0;
+
+untasklet:
+	tasklet_kill(&host->finish_tasklet);
+
+	return ret;
+}
+
+static int bcm2835_mmc_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+#ifdef CONFIG_ARCH_BCM2835
+	struct device_node *node = dev->of_node;
+	struct clk *clk;
+#endif
+	struct resource *iomem;
+	struct bcm2835_host *host = NULL;
+
+	int ret;
+	struct mmc_host *mmc;
+#if !defined(CONFIG_ARCH_BCM2835) && !defined(FORCE_PIO)
+	dma_cap_mask_t mask;
+#endif
+
+	iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!iomem) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	if (resource_size(iomem) < 0x100)
+		dev_err(&pdev->dev, "Invalid iomem size!\n");
+
+	mmc = mmc_alloc_host(sizeof(struct bcm2835_host), dev);
+	host = mmc_priv(mmc);
+	host->mmc = mmc;
+
+
+	if (IS_ERR(host)) {
+		ret = PTR_ERR(host);
+		goto err;
+	}
+
+	host->phys_addr = iomem->start + BCM2835_VCMMU_SHIFT;
+
+#ifndef CONFIG_ARCH_BCM2835
+#ifndef FORCE_PIO
+	dma_cap_zero(mask);
+	/* we don't care about the channel, any would work */
+	dma_cap_set(DMA_SLAVE, mask);
+
+	host->dma_chan_tx = dma_request_channel(mask, NULL, NULL);
+	host->dma_chan_rx = dma_request_channel(mask, NULL, NULL);
+#endif
+	host->max_clk = BCM2835_CLOCK_FREQ;
+
+#else
+#ifndef FORCE_PIO
+	host->dma_chan_tx = of_dma_request_slave_channel(node, "tx");
+	host->dma_chan_rx = of_dma_request_slave_channel(node, "rx");
+#endif
+	clk = of_clk_get(node, 0);
+	if (IS_ERR(clk)) {
+		dev_err(dev, "get CLOCK failed\n");
+		ret = PTR_ERR(clk);
+		goto out;
+	}
+	host->max_clk = (clk_get_rate(clk));
+#endif
+	host->irq = platform_get_irq(pdev, 0);
+
+	if (!request_mem_region(iomem->start, resource_size(iomem),
+		mmc_hostname(host->mmc))) {
+		dev_err(&pdev->dev, "cannot request region\n");
+		ret = -EBUSY;
+		goto err_request;
+	}
+
+	host->ioaddr = ioremap(iomem->start, resource_size(iomem));
+	if (!host->ioaddr) {
+		dev_err(&pdev->dev, "failed to remap registers\n");
+		ret = -ENOMEM;
+		goto err_remap;
+	}
+
+	platform_set_drvdata(pdev, host);
+
+
+	if (host->irq <= 0) {
+		dev_err(dev, "get IRQ failed\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+
+#ifndef CONFIG_ARCH_BCM2835
+	mmc->caps |= MMC_CAP_4_BIT_DATA;
+#else
+	mmc_of_parse(mmc);
+#endif
+	host->timeout = msecs_to_jiffies(1000);
+	spin_lock_init(&host->lock);
+	mmc->ops = &bcm2835_ops;
+	return bcm2835_mmc_add_host(host);
+
+
+err_remap:
+	release_mem_region(iomem->start, resource_size(iomem));
+err_request:
+	mmc_free_host(host->mmc);
+err:
+	dev_err(&pdev->dev, "%s failed %d\n", __func__, ret);
+	return ret;
+out:
+	if (mmc)
+		mmc_free_host(mmc);
+	return ret;
+}
+
+static int bcm2835_mmc_remove(struct platform_device *pdev)
+{
+	struct bcm2835_host *host = platform_get_drvdata(pdev);
+	struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	unsigned long flags;
+	int dead;
+	u32 scratch;
+
+	dead = 0;
+	scratch = bcm2835_mmc_readl(host, SDHCI_INT_STATUS);
+	if (scratch == (u32)-1)
+		dead = 1;
+
+
+	if (dead) {
+		spin_lock_irqsave(&host->lock, flags);
+
+		host->flags |= SDHCI_DEVICE_DEAD;
+
+		if (host->mrq) {
+			pr_err("%s: Controller removed during "
+				" transfer!\n", mmc_hostname(host->mmc));
+
+			host->mrq->cmd->error = -ENOMEDIUM;
+			tasklet_schedule(&host->finish_tasklet);
+		}
+
+		spin_unlock_irqrestore(&host->lock, flags);
+	}
+
+	mmc_remove_host(host->mmc);
+
+	if (!dead)
+		bcm2835_mmc_reset(host, SDHCI_RESET_ALL);
+
+	free_irq(host->irq, host);
+
+	del_timer_sync(&host->timer);
+
+	tasklet_kill(&host->finish_tasklet);
+
+	iounmap(host->ioaddr);
+	release_mem_region(iomem->start, resource_size(iomem));
+	mmc_free_host(host->mmc);
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+
+static const struct of_device_id bcm2835_mmc_match[] = {
+	{ .compatible = "brcm,bcm2835-mmc" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, bcm2835_mmc_match);
+
+
+
+static struct platform_driver bcm2835_mmc_driver = {
+	.probe      = bcm2835_mmc_probe,
+	.remove     = bcm2835_mmc_remove,
+	.driver     = {
+		.name		= DRIVER_NAME,
+		.owner		= THIS_MODULE,
+		.of_match_table	= bcm2835_mmc_match,
+	},
+};
+module_platform_driver(bcm2835_mmc_driver);
+
+MODULE_ALIAS("platform:mmc-bcm2835");
+MODULE_DESCRIPTION("BCM2835 SDHCI driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Gellert Weisz");
diff -Nur linux-3.18.10/drivers/mmc/host/Kconfig linux-rpi/drivers/mmc/host/Kconfig
--- linux-3.18.10/drivers/mmc/host/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/mmc/host/Kconfig	2015-03-26 11:46:51.092235223 +0100
@@ -281,17 +281,6 @@
 
 	  If you have a controller with this interface, say Y or M here.
 
-config MMC_SDHCI_BCM2835
-	tristate "SDHCI platform support for the BCM2835 SD/MMC Controller"
-	depends on ARCH_BCM2835
-	depends on MMC_SDHCI_PLTFM
-	select MMC_SDHCI_IO_ACCESSORS
-	help
-	  This selects the BCM2835 SD/MMC controller. If you have a BCM2835
-	  platform with SD or MMC devices, say Y or M here.
-
-	  If unsure, say N.
-
 config MMC_MOXART
 	tristate "MOXART SD/MMC Host Controller support"
 	depends on ARCH_MOXART && MMC
@@ -313,6 +302,35 @@
 	  If you have a controller with this interface, say Y or M here.
 	  If unsure, say N.
 
+config MMC_BCM2835
+	tristate "MMC support on BCM2835"
+	depends on (MACH_BCM2708 || MACH_BCM2709)
+	help
+	  This selects the MMC Interface on BCM2835.
+
+	  If you have a controller with this interface, say Y or M here.
+
+	  If unsure, say N.
+
+config MMC_BCM2835_DMA
+	bool "DMA support on BCM2835 Arasan controller"
+	depends on MMC_BCM2835
+	help
+	  Enable DMA support on the Arasan SDHCI controller in Broadcom 2708
+	  based chips.
+
+	  If unsure, say N.
+
+config MMC_BCM2835_PIO_DMA_BARRIER
+	int "Block count limit for PIO transfers"
+	depends on MMC_BCM2835 && MMC_BCM2835_DMA
+	range 0 256
+	default 2
+	help
+	  The inclusive limit in bytes under which PIO will be used instead of DMA
+
+	  If unsure, say 2 here.
+
 config MMC_OMAP
 	tristate "TI OMAP Multimedia Card Interface support"
 	depends on ARCH_OMAP
diff -Nur linux-3.18.10/drivers/mmc/host/Makefile linux-rpi/drivers/mmc/host/Makefile
--- linux-3.18.10/drivers/mmc/host/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/mmc/host/Makefile	2015-03-26 11:46:51.092235223 +0100
@@ -17,6 +17,7 @@
 obj-$(CONFIG_MMC_SDHCI_S3C)	+= sdhci-s3c.o
 obj-$(CONFIG_MMC_SDHCI_SIRF)   	+= sdhci-sirf.o
 obj-$(CONFIG_MMC_SDHCI_SPEAR)	+= sdhci-spear.o
+obj-$(CONFIG_MMC_BCM2835)	+= bcm2835-mmc.o
 obj-$(CONFIG_MMC_WBSD)		+= wbsd.o
 obj-$(CONFIG_MMC_AU1X)		+= au1xmmc.o
 obj-$(CONFIG_MMC_OMAP)		+= omap.o
diff -Nur linux-3.18.10/drivers/net/ethernet/microchip/enc28j60.c linux-rpi/drivers/net/ethernet/microchip/enc28j60.c
--- linux-3.18.10/drivers/net/ethernet/microchip/enc28j60.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/net/ethernet/microchip/enc28j60.c	2015-03-26 11:46:51.880235952 +0100
@@ -1630,10 +1630,21 @@
 	return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id enc28j60_of_match[] = {
+	{ .compatible = "microchip,enc28j60", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, enc28j60_of_match);
+#endif
+
 static struct spi_driver enc28j60_driver = {
 	.driver = {
 		   .name = DRV_NAME,
 		   .owner = THIS_MODULE,
+#ifdef CONFIG_OF
+		   .of_match_table = enc28j60_of_match,
+#endif
 	 },
 	.probe = enc28j60_probe,
 	.remove = enc28j60_remove,
diff -Nur linux-3.18.10/drivers/net/usb/smsc95xx.c linux-rpi/drivers/net/usb/smsc95xx.c
--- linux-3.18.10/drivers/net/usb/smsc95xx.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/net/usb/smsc95xx.c	2015-03-26 11:46:51.956236021 +0100
@@ -59,6 +59,7 @@
 #define SUSPEND_SUSPEND3		(0x08)
 #define SUSPEND_ALLMODES		(SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
 					 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
+#define MAC_ADDR_LEN                    (6)
 
 struct smsc95xx_priv {
 	u32 mac_cr;
@@ -74,6 +75,10 @@
 module_param(turbo_mode, bool, 0644);
 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
 
+static char *macaddr = ":";
+module_param(macaddr, charp, 0);
+MODULE_PARM_DESC(macaddr, "MAC address");
+
 static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
 					    u32 *data, int in_pm)
 {
@@ -763,8 +768,59 @@
 	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
 }
 
+/* Check the macaddr module parameter for a MAC address */
+static int smsc95xx_is_macaddr_param(struct usbnet *dev, u8 *dev_mac)
+{
+       int i, j, got_num, num;
+       u8 mtbl[MAC_ADDR_LEN];
+
+       if (macaddr[0] == ':')
+               return 0;
+
+       i = 0;
+       j = 0;
+       num = 0;
+       got_num = 0;
+       while (j < MAC_ADDR_LEN) {
+               if (macaddr[i] && macaddr[i] != ':') {
+                       got_num++;
+                       if ('0' <= macaddr[i] && macaddr[i] <= '9')
+                               num = num * 16 + macaddr[i] - '0';
+                       else if ('A' <= macaddr[i] && macaddr[i] <= 'F')
+                               num = num * 16 + 10 + macaddr[i] - 'A';
+                       else if ('a' <= macaddr[i] && macaddr[i] <= 'f')
+                               num = num * 16 + 10 + macaddr[i] - 'a';
+                       else
+                               break;
+                       i++;
+               } else if (got_num == 2) {
+                       mtbl[j++] = (u8) num;
+                       num = 0;
+                       got_num = 0;
+                       i++;
+               } else {
+                       break;
+               }
+       }
+
+       if (j == MAC_ADDR_LEN) {
+               netif_dbg(dev, ifup, dev->net, "Overriding MAC address with: "
+               "%02x:%02x:%02x:%02x:%02x:%02x\n", mtbl[0], mtbl[1], mtbl[2],
+                                               mtbl[3], mtbl[4], mtbl[5]);
+               for (i = 0; i < MAC_ADDR_LEN; i++)
+                       dev_mac[i] = mtbl[i];
+               return 1;
+       } else {
+               return 0;
+       }
+}
+
 static void smsc95xx_init_mac_address(struct usbnet *dev)
 {
+       /* Check module parameters */
+       if (smsc95xx_is_macaddr_param(dev, dev->net->dev_addr))
+               return;
+
 	/* try reading mac address from EEPROM */
 	if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
 			dev->net->dev_addr) == 0) {
diff -Nur linux-3.18.10/drivers/of/fdt.c linux-rpi/drivers/of/fdt.c
--- linux-3.18.10/drivers/of/fdt.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/of/fdt.c	2015-03-26 11:46:52.772236778 +0100
@@ -901,19 +901,38 @@
 
 	/* Retrieve command line */
 	p = of_get_flat_dt_prop(node, "bootargs", &l);
-	if (p != NULL && l > 0)
-		strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
 
 	/*
 	 * CONFIG_CMDLINE is meant to be a default in case nothing else
 	 * managed to set the command line, unless CONFIG_CMDLINE_FORCE
 	 * is set in which case we override whatever was found earlier.
+	 *
+	 * However, it can be useful to be able to treat the default as
+	 * a starting point to be extended using CONFIG_CMDLINE_EXTEND.
 	 */
+	((char *)data)[0] = '\0';
+
 #ifdef CONFIG_CMDLINE
-#ifndef CONFIG_CMDLINE_FORCE
-	if (!((char *)data)[0])
+	strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+
+	if (p != NULL && l > 0)	{
+#if defined(CONFIG_CMDLINE_EXTEND)
+		int len = strlen(data);
+		if (len > 0) {
+			strlcat(data, " ", COMMAND_LINE_SIZE);
+			len++;
+		}
+		strlcpy((char *)data + len, p, min((int)l, COMMAND_LINE_SIZE - len));
+#elif defined(CONFIG_CMDLINE_FORCE)
+		pr_warning("Ignoring bootargs property (using the default kernel command line)\n");
+#else
+		/* Neither extend nor force - just override */
+		strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
 #endif
-		strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+	}
+#else /* CONFIG_CMDLINE */
+	if (p != NULL && l > 0)	{
+		strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
 #endif /* CONFIG_CMDLINE */
 
 	pr_debug("Command line is: %s\n", (char*)data);
@@ -1083,8 +1102,12 @@
 
 static int __init of_flat_dt_debugfs_export_fdt(void)
 {
-	struct dentry *d = debugfs_create_dir("device-tree", NULL);
+	struct dentry *d;
+
+	if (!initial_boot_params)
+		return -ENOENT;
 
+	d = debugfs_create_dir("device-tree", NULL);
 	if (!d)
 		return -ENOENT;
 
diff -Nur linux-3.18.10/drivers/pinctrl/pinctrl-bcm2835.c linux-rpi/drivers/pinctrl/pinctrl-bcm2835.c
--- linux-3.18.10/drivers/pinctrl/pinctrl-bcm2835.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/pinctrl/pinctrl-bcm2835.c	2015-03-26 11:46:52.964236956 +0100
@@ -47,6 +47,7 @@
 #define MODULE_NAME "pinctrl-bcm2835"
 #define BCM2835_NUM_GPIOS 54
 #define BCM2835_NUM_BANKS 2
+#define BCM2835_NUM_IRQS  3
 
 #define BCM2835_PIN_BITMAP_SZ \
 	DIV_ROUND_UP(BCM2835_NUM_GPIOS, sizeof(unsigned long) * 8)
@@ -88,13 +89,13 @@
 
 struct bcm2835_gpio_irqdata {
 	struct bcm2835_pinctrl *pc;
-	int bank;
+	int irqgroup;
 };
 
 struct bcm2835_pinctrl {
 	struct device *dev;
 	void __iomem *base;
-	int irq[BCM2835_NUM_BANKS];
+	int irq[BCM2835_NUM_IRQS];
 
 	/* note: locking assumes each bank will have its own unsigned long */
 	unsigned long enabled_irq_map[BCM2835_NUM_BANKS];
@@ -105,7 +106,7 @@
 	struct gpio_chip gpio_chip;
 	struct pinctrl_gpio_range gpio_range;
 
-	struct bcm2835_gpio_irqdata irq_data[BCM2835_NUM_BANKS];
+	struct bcm2835_gpio_irqdata irq_data[BCM2835_NUM_IRQS];
 	spinlock_t irq_lock[BCM2835_NUM_BANKS];
 };
 
@@ -355,7 +356,14 @@
 static int bcm2835_gpio_direction_output(struct gpio_chip *chip,
 		unsigned offset, int value)
 {
-	return pinctrl_gpio_direction_output(chip->base + offset);
+	struct bcm2835_pinctrl *pc = dev_get_drvdata(chip->dev);
+	int ret;
+
+	ret = pinctrl_gpio_direction_output(chip->base + offset);
+	if (ret >= 0)
+		bcm2835_gpio_set_bit(pc, value ? GPSET0 : GPCLR0, offset);
+
+	return ret;
 }
 
 static void bcm2835_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
@@ -382,22 +390,21 @@
 	.get = bcm2835_gpio_get,
 	.set = bcm2835_gpio_set,
 	.to_irq = bcm2835_gpio_to_irq,
-	.base = -1,
+	.base = 0,
 	.ngpio = BCM2835_NUM_GPIOS,
 	.can_sleep = false,
 };
 
-static irqreturn_t bcm2835_gpio_irq_handler(int irq, void *dev_id)
+static int bcm2835_gpio_irq_handle_bank(struct bcm2835_pinctrl *pc,
+					unsigned int bank, u32 mask)
 {
-	struct bcm2835_gpio_irqdata *irqdata = dev_id;
-	struct bcm2835_pinctrl *pc = irqdata->pc;
-	int bank = irqdata->bank;
 	unsigned long events;
 	unsigned offset;
 	unsigned gpio;
 	unsigned int type;
 
 	events = bcm2835_gpio_rd(pc, GPEDS0 + bank * 4);
+	events &= mask;
 	events &= pc->enabled_irq_map[bank];
 	for_each_set_bit(offset, &events, 32) {
 		gpio = (32 * bank) + offset;
@@ -413,7 +420,30 @@
 		if (type & IRQ_TYPE_LEVEL_MASK)
 			bcm2835_gpio_set_bit(pc, GPEDS0, gpio);
 	}
-	return events ? IRQ_HANDLED : IRQ_NONE;
+
+	return (events != 0);
+}
+
+static irqreturn_t bcm2835_gpio_irq_handler(int irq, void *dev_id)
+{
+	struct bcm2835_gpio_irqdata *irqdata = dev_id;
+	struct bcm2835_pinctrl *pc = irqdata->pc;
+	int handled = 0;
+
+	switch (irqdata->irqgroup) {
+	case 0: /* IRQ0 covers GPIOs 0-27 */
+		handled = bcm2835_gpio_irq_handle_bank(pc, 0, 0x0fffffff);
+		break;
+	case 1: /* IRQ1 covers GPIOs 28-45 */
+		handled = bcm2835_gpio_irq_handle_bank(pc, 0, 0xf0000000) |
+			  bcm2835_gpio_irq_handle_bank(pc, 1, 0x00003fff);
+		break;
+	case 2: /* IRQ2 covers GPIOs 46-53 */
+		handled = bcm2835_gpio_irq_handle_bank(pc, 1, 0x003fc000);
+		break;
+	}
+
+	return handled ? IRQ_HANDLED : IRQ_NONE;
 }
 
 static inline void __bcm2835_gpio_irq_config(struct bcm2835_pinctrl *pc,
@@ -985,8 +1015,6 @@
 	for (i = 0; i < BCM2835_NUM_BANKS; i++) {
 		unsigned long events;
 		unsigned offset;
-		int len;
-		char *name;
 
 		/* clear event detection flags */
 		bcm2835_gpio_wr(pc, GPREN0 + i * 4, 0);
@@ -1001,10 +1029,17 @@
 		for_each_set_bit(offset, &events, 32)
 			bcm2835_gpio_wr(pc, GPEDS0 + i * 4, BIT(offset));
 
+		spin_lock_init(&pc->irq_lock[i]);
+	}
+
+	for (i = 0; i < BCM2835_NUM_IRQS; i++) {
+		int len;
+		char *name;
 		pc->irq[i] = irq_of_parse_and_map(np, i);
+		if (pc->irq[i] == 0)
+			break;
 		pc->irq_data[i].pc = pc;
-		pc->irq_data[i].bank = i;
-		spin_lock_init(&pc->irq_lock[i]);
+		pc->irq_data[i].irqgroup = i;
 
 		len = strlen(dev_name(pc->dev)) + 16;
 		name = devm_kzalloc(pc->dev, len, GFP_KERNEL);
diff -Nur linux-3.18.10/drivers/rtc/rtc-ds1307.c linux-rpi/drivers/rtc/rtc-ds1307.c
--- linux-3.18.10/drivers/rtc/rtc-ds1307.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/rtc/rtc-ds1307.c	2015-03-26 11:46:53.432237389 +0100
@@ -1241,6 +1241,14 @@
 	return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id ds1307_of_match[] = {
+	{ .compatible = "maxim,ds1307" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ds1307_of_match);
+#endif
+
 static struct i2c_driver ds1307_driver = {
 	.driver = {
 		.name	= "rtc-ds1307",
diff -Nur linux-3.18.10/drivers/spi/Kconfig linux-rpi/drivers/spi/Kconfig
--- linux-3.18.10/drivers/spi/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/spi/Kconfig	2015-03-26 11:46:53.876237802 +0100
@@ -77,7 +77,7 @@
 
 config SPI_BCM2835
 	tristate "BCM2835 SPI controller"
-	depends on ARCH_BCM2835 || COMPILE_TEST
+	depends on ARCH_BCM2835 || ARCH_BCM2708 || ARCH_BCM2709 || COMPILE_TEST
 	help
 	  This selects a driver for the Broadcom BCM2835 SPI master.
 
@@ -86,6 +86,14 @@
 	  is for the regular SPI controller. Slave mode operation is not also
 	  not supported.
 
+config SPI_BCM2708
+	tristate "BCM2708 SPI controller driver (SPI0)"
+	depends on MACH_BCM2708 || MACH_BCM2709
+	help
+	  This selects a driver for the Broadcom BCM2708 SPI master (SPI0). This
+	  driver is not compatible with the "Universal SPI Master" or the SPI slave
+	  device.
+
 config SPI_BFIN5XX
 	tristate "SPI controller driver for ADI Blackfin5xx"
 	depends on BLACKFIN && !BF60x
diff -Nur linux-3.18.10/drivers/spi/Makefile linux-rpi/drivers/spi/Makefile
--- linux-3.18.10/drivers/spi/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/spi/Makefile	2015-03-26 11:46:53.876237802 +0100
@@ -20,6 +20,7 @@
 obj-$(CONFIG_SPI_BCM63XX_HSSPI)		+= spi-bcm63xx-hsspi.o
 obj-$(CONFIG_SPI_BFIN5XX)		+= spi-bfin5xx.o
 obj-$(CONFIG_SPI_ADI_V3)                += spi-adi-v3.o
+obj-$(CONFIG_SPI_BCM2708)		+= spi-bcm2708.o
 obj-$(CONFIG_SPI_BFIN_SPORT)		+= spi-bfin-sport.o
 obj-$(CONFIG_SPI_BITBANG)		+= spi-bitbang.o
 obj-$(CONFIG_SPI_BUTTERFLY)		+= spi-butterfly.o
diff -Nur linux-3.18.10/drivers/spi/spi-bcm2708.c linux-rpi/drivers/spi/spi-bcm2708.c
--- linux-3.18.10/drivers/spi/spi-bcm2708.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/spi/spi-bcm2708.c	2015-03-26 11:46:53.876237802 +0100
@@ -0,0 +1,635 @@
+/*
+ * Driver for Broadcom BCM2708 SPI Controllers
+ *
+ * Copyright (C) 2012 Chris Boot
+ *
+ * This driver is inspired by:
+ * spi-ath79.c, Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.org>
+ * spi-atmel.c, Copyright (C) 2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/spi/spi.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/log2.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+
+/* SPI register offsets */
+#define SPI_CS			0x00
+#define SPI_FIFO		0x04
+#define SPI_CLK			0x08
+#define SPI_DLEN		0x0c
+#define SPI_LTOH		0x10
+#define SPI_DC			0x14
+
+/* Bitfields in CS */
+#define SPI_CS_LEN_LONG		0x02000000
+#define SPI_CS_DMA_LEN		0x01000000
+#define SPI_CS_CSPOL2		0x00800000
+#define SPI_CS_CSPOL1		0x00400000
+#define SPI_CS_CSPOL0		0x00200000
+#define SPI_CS_RXF		0x00100000
+#define SPI_CS_RXR		0x00080000
+#define SPI_CS_TXD		0x00040000
+#define SPI_CS_RXD		0x00020000
+#define SPI_CS_DONE		0x00010000
+#define SPI_CS_LEN		0x00002000
+#define SPI_CS_REN		0x00001000
+#define SPI_CS_ADCS		0x00000800
+#define SPI_CS_INTR		0x00000400
+#define SPI_CS_INTD		0x00000200
+#define SPI_CS_DMAEN		0x00000100
+#define SPI_CS_TA		0x00000080
+#define SPI_CS_CSPOL		0x00000040
+#define SPI_CS_CLEAR_RX		0x00000020
+#define SPI_CS_CLEAR_TX		0x00000010
+#define SPI_CS_CPOL		0x00000008
+#define SPI_CS_CPHA		0x00000004
+#define SPI_CS_CS_10		0x00000002
+#define SPI_CS_CS_01		0x00000001
+
+#define SPI_TIMEOUT_MS	150
+
+#define DRV_NAME	"bcm2708_spi"
+
+struct bcm2708_spi {
+	spinlock_t lock;
+	void __iomem *base;
+	int irq;
+	struct clk *clk;
+	bool stopping;
+
+	struct list_head queue;
+	struct workqueue_struct *workq;
+	struct work_struct work;
+	struct completion done;
+
+	const u8 *tx_buf;
+	u8 *rx_buf;
+	int len;
+};
+
+struct bcm2708_spi_state {
+	u32 cs;
+	u16 cdiv;
+};
+
+/*
+ * This function sets the ALT mode on the SPI pins so that we can use them with
+ * the SPI hardware.
+ *
+ * FIXME: This is a hack. Use pinmux / pinctrl.
+ */
+static void bcm2708_init_pinmode(void)
+{
+#define INP_GPIO(g) *(gpio+((g)/10)) &= ~(7<<(((g)%10)*3))
+#define SET_GPIO_ALT(g,a) *(gpio+(((g)/10))) |= (((a)<=3?(a)+4:(a)==4?3:2)<<(((g)%10)*3))
+
+	int pin;
+	u32 *gpio = ioremap(GPIO_BASE, SZ_16K);
+
+	/* SPI is on GPIO 7..11 */
+	for (pin = 7; pin <= 11; pin++) {
+		INP_GPIO(pin);		/* set mode to GPIO input first */
+		SET_GPIO_ALT(pin, 0);	/* set mode to ALT 0 */
+	}
+
+	iounmap(gpio);
+
+#undef INP_GPIO
+#undef SET_GPIO_ALT
+}
+
+static inline u32 bcm2708_rd(struct bcm2708_spi *bs, unsigned reg)
+{
+	return readl(bs->base + reg);
+}
+
+static inline void bcm2708_wr(struct bcm2708_spi *bs, unsigned reg, u32 val)
+{
+	writel(val, bs->base + reg);
+}
+
+static inline void bcm2708_rd_fifo(struct bcm2708_spi *bs, int len)
+{
+	u8 byte;
+
+	while (len--) {
+		byte = bcm2708_rd(bs, SPI_FIFO);
+		if (bs->rx_buf)
+			*bs->rx_buf++ = byte;
+	}
+}
+
+static inline void bcm2708_wr_fifo(struct bcm2708_spi *bs, int len)
+{
+	u8 byte;
+	u16 val;
+
+	if (len > bs->len)
+		len = bs->len;
+
+	if (unlikely(bcm2708_rd(bs, SPI_CS) & SPI_CS_LEN)) {
+		/* LoSSI mode */
+		if (unlikely(len % 2)) {
+			printk(KERN_ERR"bcm2708_wr_fifo: length must be even, skipping.\n");
+			bs->len = 0;
+			return;
+		}
+		while (len) {
+			if (bs->tx_buf) {
+				val = *(const u16 *)bs->tx_buf;
+				bs->tx_buf += 2;
+			} else
+				val = 0;
+			bcm2708_wr(bs, SPI_FIFO, val);
+			bs->len -= 2;
+			len -= 2;
+		}
+		return;
+	}
+
+	while (len--) {
+		byte = bs->tx_buf ? *bs->tx_buf++ : 0;
+		bcm2708_wr(bs, SPI_FIFO, byte);
+		bs->len--;
+	}
+}
+
+static irqreturn_t bcm2708_spi_interrupt(int irq, void *dev_id)
+{
+	struct spi_master *master = dev_id;
+	struct bcm2708_spi *bs = spi_master_get_devdata(master);
+	u32 cs;
+
+	spin_lock(&bs->lock);
+
+	cs = bcm2708_rd(bs, SPI_CS);
+
+	if (cs & SPI_CS_DONE) {
+		if (bs->len) { /* first interrupt in a transfer */
+			/* fill the TX fifo with up to 16 bytes */
+			bcm2708_wr_fifo(bs, 16);
+		} else { /* transfer complete */
+			/* disable interrupts */
+			cs &= ~(SPI_CS_INTR | SPI_CS_INTD);
+			bcm2708_wr(bs, SPI_CS, cs);
+
+			/* drain RX FIFO */
+			while (cs & SPI_CS_RXD) {
+				bcm2708_rd_fifo(bs, 1);
+				cs = bcm2708_rd(bs, SPI_CS);
+			}
+
+			/* wake up our bh */
+			complete(&bs->done);
+		}
+	} else if (cs & SPI_CS_RXR) {
+		/* read 12 bytes of data */
+		bcm2708_rd_fifo(bs, 12);
+
+		/* write up to 12 bytes */
+		bcm2708_wr_fifo(bs, 12);
+	}
+
+	spin_unlock(&bs->lock);
+
+	return IRQ_HANDLED;
+}
+
+static int bcm2708_setup_state(struct spi_master *master,
+		struct device *dev, struct bcm2708_spi_state *state,
+		u32 hz, u8 csel, u8 mode, u8 bpw)
+{
+	struct bcm2708_spi *bs = spi_master_get_devdata(master);
+	int cdiv;
+	unsigned long bus_hz;
+	u32 cs = 0;
+
+	bus_hz = clk_get_rate(bs->clk);
+
+	if (hz >= bus_hz) {
+		cdiv = 2; /* bus_hz / 2 is as fast as we can go */
+	} else if (hz) {
+		cdiv = DIV_ROUND_UP(bus_hz, hz);
+
+		/* CDIV must be a power of 2, so round up */
+		cdiv = roundup_pow_of_two(cdiv);
+
+		if (cdiv > 65536) {
+			dev_dbg(dev,
+				"setup: %d Hz too slow, cdiv %u; min %ld Hz\n",
+				hz, cdiv, bus_hz / 65536);
+			return -EINVAL;
+		} else if (cdiv == 65536) {
+			cdiv = 0;
+		} else if (cdiv == 1) {
+			cdiv = 2; /* 1 gets rounded down to 0; == 65536 */
+		}
+	} else {
+		cdiv = 0;
+	}
+
+	switch (bpw) {
+	case 8:
+		break;
+	case 9:
+		/* Reading in LoSSI mode is a special case. See 'BCM2835 ARM Peripherals' datasheet */
+		cs |= SPI_CS_LEN;
+		break;
+	default:
+		dev_dbg(dev, "setup: invalid bits_per_word %u (must be 8 or 9)\n",
+			bpw);
+		return -EINVAL;
+	}
+
+	if (mode & SPI_CPOL)
+		cs |= SPI_CS_CPOL;
+	if (mode & SPI_CPHA)
+		cs |= SPI_CS_CPHA;
+
+	if (!(mode & SPI_NO_CS)) {
+		if (mode & SPI_CS_HIGH) {
+			cs |= SPI_CS_CSPOL;
+			cs |= SPI_CS_CSPOL0 << csel;
+		}
+
+		cs |= csel;
+	} else {
+		cs |= SPI_CS_CS_10 | SPI_CS_CS_01;
+	}
+
+	if (state) {
+		state->cs = cs;
+		state->cdiv = cdiv;
+		dev_dbg(dev, "setup: want %d Hz; "
+			"bus_hz=%lu / cdiv=%u == %lu Hz; "
+			"mode %u: cs 0x%08X\n",
+			hz, bus_hz, cdiv, bus_hz/cdiv, mode, cs);
+	}
+
+	return 0;
+}
+
+static int bcm2708_process_transfer(struct bcm2708_spi *bs,
+		struct spi_message *msg, struct spi_transfer *xfer)
+{
+	struct spi_device *spi = msg->spi;
+	struct bcm2708_spi_state state, *stp;
+	int ret;
+	u32 cs;
+
+	if (bs->stopping)
+		return -ESHUTDOWN;
+
+	if (xfer->bits_per_word || xfer->speed_hz) {
+		ret = bcm2708_setup_state(spi->master, &spi->dev, &state,
+			xfer->speed_hz ? xfer->speed_hz : spi->max_speed_hz,
+			spi->chip_select, spi->mode,
+			xfer->bits_per_word ? xfer->bits_per_word :
+				spi->bits_per_word);
+		if (ret)
+			return ret;
+
+		stp = &state;
+	} else {
+		stp = spi->controller_state;
+	}
+
+	reinit_completion(&bs->done);
+	bs->tx_buf = xfer->tx_buf;
+	bs->rx_buf = xfer->rx_buf;
+	bs->len = xfer->len;
+
+	cs = stp->cs | SPI_CS_INTR | SPI_CS_INTD | SPI_CS_TA;
+
+	bcm2708_wr(bs, SPI_CLK, stp->cdiv);
+	bcm2708_wr(bs, SPI_CS, cs);
+
+	ret = wait_for_completion_timeout(&bs->done,
+			msecs_to_jiffies(SPI_TIMEOUT_MS));
+	if (ret == 0) {
+		dev_err(&spi->dev, "transfer timed out\n");
+		return -ETIMEDOUT;
+	}
+
+	if (xfer->delay_usecs)
+		udelay(xfer->delay_usecs);
+
+	if (list_is_last(&xfer->transfer_list, &msg->transfers) ||
+			xfer->cs_change) {
+		/* clear TA and interrupt flags */
+		bcm2708_wr(bs, SPI_CS, stp->cs);
+	}
+
+	msg->actual_length += (xfer->len - bs->len);
+
+	return 0;
+}
+
+static void bcm2708_work(struct work_struct *work)
+{
+	struct bcm2708_spi *bs = container_of(work, struct bcm2708_spi, work);
+	unsigned long flags;
+	struct spi_message *msg;
+	struct spi_transfer *xfer;
+	int status = 0;
+
+	spin_lock_irqsave(&bs->lock, flags);
+	while (!list_empty(&bs->queue)) {
+		msg = list_first_entry(&bs->queue, struct spi_message, queue);
+		list_del_init(&msg->queue);
+		spin_unlock_irqrestore(&bs->lock, flags);
+
+		list_for_each_entry(xfer, &msg->transfers, transfer_list) {
+			status = bcm2708_process_transfer(bs, msg, xfer);
+			if (status)
+				break;
+		}
+
+		msg->status = status;
+		msg->complete(msg->context);
+
+		spin_lock_irqsave(&bs->lock, flags);
+	}
+	spin_unlock_irqrestore(&bs->lock, flags);
+}
+
+static int bcm2708_spi_setup(struct spi_device *spi)
+{
+	struct bcm2708_spi *bs = spi_master_get_devdata(spi->master);
+	struct bcm2708_spi_state *state;
+	int ret;
+
+	if (bs->stopping)
+		return -ESHUTDOWN;
+
+	if (!(spi->mode & SPI_NO_CS) &&
+			(spi->chip_select > spi->master->num_chipselect)) {
+		dev_dbg(&spi->dev,
+			"setup: invalid chipselect %u (%u defined)\n",
+			spi->chip_select, spi->master->num_chipselect);
+		return -EINVAL;
+	}
+
+	state = spi->controller_state;
+	if (!state) {
+		state = kzalloc(sizeof(*state), GFP_KERNEL);
+		if (!state)
+			return -ENOMEM;
+
+		spi->controller_state = state;
+	}
+
+	ret = bcm2708_setup_state(spi->master, &spi->dev, state,
+		spi->max_speed_hz, spi->chip_select, spi->mode,
+		spi->bits_per_word);
+	if (ret < 0) {
+		kfree(state);
+		spi->controller_state = NULL;
+                return ret;
+	}
+
+	dev_dbg(&spi->dev,
+		"setup: cd %d: %d Hz, bpw %u, mode 0x%x -> CS=%08x CDIV=%04x\n",
+		spi->chip_select, spi->max_speed_hz, spi->bits_per_word,
+		spi->mode, state->cs, state->cdiv);
+
+	return 0;
+}
+
+static int bcm2708_spi_transfer(struct spi_device *spi, struct spi_message *msg)
+{
+	struct bcm2708_spi *bs = spi_master_get_devdata(spi->master);
+	struct spi_transfer *xfer;
+	int ret;
+	unsigned long flags;
+
+	if (unlikely(list_empty(&msg->transfers)))
+		return -EINVAL;
+
+	if (bs->stopping)
+		return -ESHUTDOWN;
+
+	list_for_each_entry(xfer, &msg->transfers, transfer_list) {
+		if (!(xfer->tx_buf || xfer->rx_buf) && xfer->len) {
+			dev_dbg(&spi->dev, "missing rx or tx buf\n");
+			return -EINVAL;
+		}
+
+		if (!xfer->bits_per_word || xfer->speed_hz)
+			continue;
+
+		ret = bcm2708_setup_state(spi->master, &spi->dev, NULL,
+			xfer->speed_hz ? xfer->speed_hz : spi->max_speed_hz,
+			spi->chip_select, spi->mode,
+			xfer->bits_per_word ? xfer->bits_per_word :
+				spi->bits_per_word);
+		if (ret)
+			return ret;
+	}
+
+	msg->status = -EINPROGRESS;
+	msg->actual_length = 0;
+
+	spin_lock_irqsave(&bs->lock, flags);
+	list_add_tail(&msg->queue, &bs->queue);
+	queue_work(bs->workq, &bs->work);
+	spin_unlock_irqrestore(&bs->lock, flags);
+
+	return 0;
+}
+
+static void bcm2708_spi_cleanup(struct spi_device *spi)
+{
+	if (spi->controller_state) {
+		kfree(spi->controller_state);
+		spi->controller_state = NULL;
+	}
+}
+
+static int bcm2708_spi_probe(struct platform_device *pdev)
+{
+	struct resource *regs;
+	int irq, err = -ENOMEM;
+	struct clk *clk;
+	struct spi_master *master;
+	struct bcm2708_spi *bs;
+
+	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!regs) {
+		dev_err(&pdev->dev, "could not get IO memory\n");
+		return -ENXIO;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		dev_err(&pdev->dev, "could not get IRQ\n");
+		return irq;
+	}
+
+	clk = clk_get(&pdev->dev, NULL);
+	if (IS_ERR(clk)) {
+		dev_err(&pdev->dev, "could not find clk: %ld\n", PTR_ERR(clk));
+		return PTR_ERR(clk);
+	}
+
+	bcm2708_init_pinmode();
+
+	master = spi_alloc_master(&pdev->dev, sizeof(*bs));
+	if (!master) {
+		dev_err(&pdev->dev, "spi_alloc_master() failed\n");
+		goto out_clk_put;
+	}
+
+	/* the spi->mode bits understood by this driver: */
+	master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_NO_CS;
+
+	master->bus_num = pdev->id;
+	master->num_chipselect = 3;
+	master->setup = bcm2708_spi_setup;
+	master->transfer = bcm2708_spi_transfer;
+	master->cleanup = bcm2708_spi_cleanup;
+	master->dev.of_node = pdev->dev.of_node;
+	platform_set_drvdata(pdev, master);
+
+	bs = spi_master_get_devdata(master);
+
+	spin_lock_init(&bs->lock);
+	INIT_LIST_HEAD(&bs->queue);
+	init_completion(&bs->done);
+	INIT_WORK(&bs->work, bcm2708_work);
+
+	bs->base = ioremap(regs->start, resource_size(regs));
+	if (!bs->base) {
+		dev_err(&pdev->dev, "could not remap memory\n");
+		goto out_master_put;
+	}
+
+	bs->workq = create_singlethread_workqueue(dev_name(&pdev->dev));
+	if (!bs->workq) {
+		dev_err(&pdev->dev, "could not create workqueue\n");
+		goto out_iounmap;
+	}
+
+	bs->irq = irq;
+	bs->clk = clk;
+	bs->stopping = false;
+
+	err = request_irq(irq, bcm2708_spi_interrupt, 0, dev_name(&pdev->dev),
+			master);
+	if (err) {
+		dev_err(&pdev->dev, "could not request IRQ: %d\n", err);
+		goto out_workqueue;
+	}
+
+	/* initialise the hardware */
+	clk_prepare_enable(clk);
+	bcm2708_wr(bs, SPI_CS, SPI_CS_REN | SPI_CS_CLEAR_RX | SPI_CS_CLEAR_TX);
+
+	err = spi_register_master(master);
+	if (err) {
+		dev_err(&pdev->dev, "could not register SPI master: %d\n", err);
+		goto out_free_irq;
+	}
+
+	dev_info(&pdev->dev, "SPI Controller at 0x%08lx (irq %d)\n",
+		(unsigned long)regs->start, irq);
+
+	return 0;
+
+out_free_irq:
+	free_irq(bs->irq, master);
+	clk_disable_unprepare(bs->clk);
+out_workqueue:
+	destroy_workqueue(bs->workq);
+out_iounmap:
+	iounmap(bs->base);
+out_master_put:
+	spi_master_put(master);
+out_clk_put:
+	clk_put(clk);
+	return err;
+}
+
+static int bcm2708_spi_remove(struct platform_device *pdev)
+{
+	struct spi_master *master = platform_get_drvdata(pdev);
+	struct bcm2708_spi *bs = spi_master_get_devdata(master);
+
+	/* reset the hardware and block queue progress */
+	spin_lock_irq(&bs->lock);
+	bs->stopping = true;
+	bcm2708_wr(bs, SPI_CS, SPI_CS_CLEAR_RX | SPI_CS_CLEAR_TX);
+	spin_unlock_irq(&bs->lock);
+
+	flush_work(&bs->work);
+
+	clk_disable_unprepare(bs->clk);
+	clk_put(bs->clk);
+	free_irq(bs->irq, master);
+	iounmap(bs->base);
+
+	spi_unregister_master(master);
+
+	return 0;
+}
+
+static const struct of_device_id bcm2708_spi_match[] = {
+	{ .compatible = "brcm,bcm2708-spi", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, bcm2708_spi_match);
+
+static struct platform_driver bcm2708_spi_driver = {
+	.driver		= {
+		.name	= DRV_NAME,
+		.owner	= THIS_MODULE,
+		.of_match_table = bcm2708_spi_match,
+	},
+	.probe		= bcm2708_spi_probe,
+	.remove		= bcm2708_spi_remove,
+};
+
+
+static int __init bcm2708_spi_init(void)
+{
+	return platform_driver_probe(&bcm2708_spi_driver, bcm2708_spi_probe);
+}
+module_init(bcm2708_spi_init);
+
+static void __exit bcm2708_spi_exit(void)
+{
+	platform_driver_unregister(&bcm2708_spi_driver);
+}
+module_exit(bcm2708_spi_exit);
+
+
+//module_platform_driver(bcm2708_spi_driver);
+
+MODULE_DESCRIPTION("SPI controller driver for Broadcom BCM2708");
+MODULE_AUTHOR("Chris Boot <bootc@bootc.net>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_agm1264k-fl.c linux-rpi/drivers/staging/fbtft/fb_agm1264k-fl.c
--- linux-3.18.10/drivers/staging/fbtft/fb_agm1264k-fl.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_agm1264k-fl.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,462 @@
+/*
+ * FB driver for Two KS0108 LCD controllers in AGM1264K-FL display
+ *
+ * Copyright (C) 2014 ololoshka2871
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+
+#include "fbtft.h"
+
+/* Uncomment text line to use negative image on display */
+/*#define NEGATIVE*/
+
+#define WHITE		0xff
+#define BLACK		0
+
+#define DRVNAME		"fb_agm1264k-fl"
+#define WIDTH		64
+#define HEIGHT		64
+#define TOTALWIDTH	(WIDTH * 2)	 /* because 2 x ks0108 in one display */
+#define FPS			20
+
+#define EPIN		gpio.wr
+#define RS			gpio.dc
+#define RW			gpio.aux[2]
+#define CS0			gpio.aux[0]
+#define CS1			gpio.aux[1]
+
+
+/* diffusing error (“Floyd-Steinberg”) */
+#define DIFFUSING_MATRIX_WIDTH	2
+#define DIFFUSING_MATRIX_HEIGHT	2
+
+static const signed char
+diffusing_matrix[DIFFUSING_MATRIX_WIDTH][DIFFUSING_MATRIX_HEIGHT] = {
+	{-1, 3},
+	{3, 2},
+};
+
+static const unsigned char gamma_correction_table[] = {
+0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1,
+1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6,
+6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 11, 11, 11, 12, 12, 13,
+13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21,
+22, 22, 23, 23, 24, 25, 25, 26, 26, 27, 28, 28, 29, 30, 30, 31, 32,
+33, 33, 34, 35, 35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 43, 44, 45,
+46, 47, 48, 49, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
+62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 81,
+82, 83, 84, 85, 87, 88, 89, 90, 91, 93, 94, 95, 97, 98, 99, 100, 102,
+103, 105, 106, 107, 109, 110, 111, 113, 114, 116, 117, 119, 120, 121,
+123, 124, 126, 127, 129, 130, 132, 133, 135, 137, 138, 140, 141, 143,
+145, 146, 148, 149, 151, 153, 154, 156, 158, 159, 161, 163, 165, 166,
+168, 170, 172, 173, 175, 177, 179, 181, 182, 184, 186, 188, 190, 192,
+194, 196, 197, 199, 201, 203, 205, 207, 209, 211, 213, 215, 217, 219,
+221, 223, 225, 227, 229, 231, 234, 236, 238, 240, 242, 244, 246, 248,
+251, 253, 255
+};
+
+static int init_display(struct fbtft_par *par)
+{
+	u8 i;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	for (i = 0; i < 2; ++i) {
+		write_reg(par, i, 0x3f); /* display on */
+		write_reg(par, i, 0x40); /* set x to 0 */
+		write_reg(par, i, 0xb0); /* set page to 0 */
+		write_reg(par, i, 0xc0); /* set start line to 0 */
+	}
+
+	return 0;
+}
+
+static void reset(struct fbtft_par *par)
+{
+	if (par->gpio.reset == -1)
+		return;
+
+	fbtft_dev_dbg(DEBUG_RESET, par, par->info->device, "%s()\n", __func__);
+
+	gpio_set_value(par->gpio.reset, 0);
+	udelay(20);
+	gpio_set_value(par->gpio.reset, 1);
+	mdelay(120);
+}
+
+/* Check if all necessary GPIOS defined */
+static int verify_gpios(struct fbtft_par *par)
+{
+	int i;
+
+	fbtft_dev_dbg(DEBUG_VERIFY_GPIOS, par, par->info->device,
+		"%s()\n", __func__);
+
+	if (par->EPIN < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'wr' (aka E) gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	for (i = 0; i < 8; ++i) {
+		if (par->gpio.db[i] < 0) {
+			dev_err(par->info->device,
+				"Missing info about 'db[%i]' gpio. Aborting.\n",
+				i);
+			return -EINVAL;
+		}
+	}
+	if (par->CS0 < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'cs0' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (par->CS1 < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'cs1' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (par->RW < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'rw' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static unsigned long
+request_gpios_match(struct fbtft_par *par, const struct fbtft_gpio *gpio)
+{
+	fbtft_dev_dbg(DEBUG_REQUEST_GPIOS_MATCH, par, par->info->device,
+		"%s('%s')\n", __func__, gpio->name);
+
+	if (strcasecmp(gpio->name, "wr") == 0) {
+		/* left ks0108 E pin */
+		par->EPIN = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	} else if (strcasecmp(gpio->name, "cs0") == 0) {
+		/* left ks0108 controller pin */
+		par->CS0 = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "cs1") == 0) {
+		/* right ks0108 controller pin */
+		par->CS1 = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	}
+
+	/* if write (rw = 0) e(1->0) perform write */
+	/* if read (rw = 1) e(0->1) set data on D0-7*/
+	else if (strcasecmp(gpio->name, "rw") == 0) {
+		par->RW = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	}
+
+	return FBTFT_GPIO_NO_MATCH;
+}
+
+/* This function oses to enter commands
+ * first byte - destination controller 0 or 1
+ * folowing - commands
+ */
+static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	u8 *buf = (u8 *)par->buf;
+
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
+		va_start(args, len);
+		for (i = 0; i < len; i++)
+			buf[i] = (u8)va_arg(args, unsigned int);
+
+		va_end(args);
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,
+			par->info->device, u8, buf, len, "%s: ", __func__);
+	}
+
+	va_start(args, len);
+
+	*buf = (u8)va_arg(args, unsigned int);
+
+	if (*buf > 1) {
+		va_end(args);
+		dev_err(par->info->device, "%s: Incorrect chip sellect request (%d)\n",
+			__func__, *buf);
+		return;
+	}
+
+	/* select chip */
+	if (*buf) {
+		/* cs1 */
+		gpio_set_value(par->CS0, 1);
+		gpio_set_value(par->CS1, 0);
+	} else {
+		/* cs0 */
+		gpio_set_value(par->CS0, 0);
+		gpio_set_value(par->CS1, 1);
+	}
+
+	gpio_set_value(par->RS, 0); /* RS->0 (command mode) */
+	len--;
+
+	if (len) {
+		i = len;
+		while (i--)
+			*buf++ = (u8)va_arg(args, unsigned int);
+		ret = par->fbtftops.write(par, par->buf, len * (sizeof(u8)));
+		if (ret < 0) {
+			va_end(args);
+			dev_err(par->info->device, "%s: write() failed and returned %d\n",
+				__func__, ret);
+			return;
+		}
+	}
+
+	va_end(args);
+}
+
+static struct
+{
+	int xs, ys_page, xe, ye_page;
+} addr_win;
+
+/* save display writing zone */
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	addr_win.xs = xs;
+	addr_win.ys_page = ys / 8;
+	addr_win.xe = xe;
+	addr_win.ye_page = ye / 8;
+
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys_page=%d, xe=%d, ye_page=%d)\n", __func__,
+		addr_win.xs, addr_win.ys_page, addr_win.xe, addr_win.ye_page);
+}
+
+static void
+construct_line_bitmap(struct fbtft_par *par, u8 *dest, signed short *src,
+						int xs, int xe, int y)
+{
+	int x, i;
+
+	for (x = xs; x < xe; ++x) {
+		u8 res = 0;
+
+		for (i = 0; i < 8; i++)
+			if (src[(y * 8 + i) * par->info->var.xres + x])
+				res |= 1 << i;
+#ifdef NEGATIVE
+		*dest++ = res;
+#else
+		*dest++ = ~res;
+#endif
+	}
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	u8 *buf = par->txbuf.buf;
+	int x, y;
+	int ret = 0;
+
+	/* buffer to convert RGB565 -> grayscale16 -> Ditherd image 1bpp */
+	signed short *convert_buf = kmalloc(par->info->var.xres *
+		par->info->var.yres * sizeof(signed short), GFP_NOIO);
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	/* converting to grayscale16 */
+	for (x = 0; x < par->info->var.xres; ++x)
+		for (y = 0; y < par->info->var.yres; ++y) {
+			u16 pixel = vmem16[y *  par->info->var.xres + x];
+			u16 b = pixel & 0x1f;
+			u16 g = (pixel & (0x3f << 5)) >> 5;
+			u16 r = (pixel & (0x1f << (5 + 6))) >> (5 + 6);
+
+			pixel = (299 * r + 587 * g + 114 * b) / 200;
+			if (pixel > 255)
+				pixel = 255;
+
+			/* gamma-correction by table */
+			convert_buf[y *  par->info->var.xres + x] =
+				(signed short)gamma_correction_table[pixel];
+		}
+
+	/* Image Dithering */
+	for (x = 0; x < par->info->var.xres; ++x)
+		for (y = 0; y < par->info->var.yres; ++y) {
+			signed short pixel =
+				convert_buf[y *  par->info->var.xres + x];
+			signed short error_b = pixel - BLACK;
+			signed short error_w = pixel - WHITE;
+			signed short error;
+			u16 i, j;
+
+			/* what color close? */
+			if (abs(error_b) >= abs(error_w)) {
+				/* white */
+				error = error_w;
+				pixel = 0xff;
+			} else {
+				/* black */
+				error = error_b;
+				pixel = 0;
+			}
+
+			error /= 8;
+
+			/* diffusion matrix row */
+			for (i = 0; i < DIFFUSING_MATRIX_WIDTH; ++i)
+				/* diffusion matrix column */
+				for (j = 0; j < DIFFUSING_MATRIX_HEIGHT; ++j) {
+					signed short *write_pos;
+					signed char coeff;
+
+					/* skip pixels out of zone */
+					if (x + i < 0 ||
+						x + i >= par->info->var.xres
+						|| y + j >= par->info->var.yres)
+						continue;
+					write_pos = &convert_buf[
+						(y + j) * par->info->var.xres +
+						x + i];
+					coeff = diffusing_matrix[i][j];
+					if (coeff == -1)
+						/* pixel itself */
+						*write_pos = pixel;
+					else {
+						signed short p = *write_pos +
+							error * coeff;
+
+						if (p > WHITE)
+							p = WHITE;
+						if (p < BLACK)
+							p = BLACK;
+						*write_pos = p;
+					}
+				}
+		}
+
+	 /* 1 string = 2 pages */
+	 for (y = addr_win.ys_page; y <= addr_win.ye_page; ++y) {
+		/* left half of display */
+		if (addr_win.xs < par->info->var.xres / 2) {
+			construct_line_bitmap(par, buf, convert_buf,
+				addr_win.xs, par->info->var.xres / 2, y);
+
+			len = par->info->var.xres / 2 - addr_win.xs;
+
+			/* select left side (sc0)
+			 * set addr
+			 */
+			write_reg(par, 0x00, (1 << 6) | (u8)addr_win.xs);
+			write_reg(par, 0x00, (0x17 << 3) | (u8)y);
+
+			/* write bitmap */
+			gpio_set_value(par->RS, 1); /* RS->1 (data mode) */
+			ret = par->fbtftops.write(par, buf, len);
+			if (ret < 0)
+				dev_err(par->info->device,
+					"%s: write failed and returned: %d\n",
+					__func__, ret);
+		}
+		/* right half of display */
+		if (addr_win.xe >= par->info->var.xres / 2) {
+			construct_line_bitmap(par, buf,
+				convert_buf, par->info->var.xres / 2,
+				addr_win.xe + 1, y);
+
+			len = addr_win.xe + 1 - par->info->var.xres / 2;
+
+			/* select right side (sc1)
+			 * set addr
+			 */
+			write_reg(par, 0x01, (1 << 6));
+			write_reg(par, 0x01, (0x17 << 3) | (u8)y);
+
+			/* write bitmap */
+			gpio_set_value(par->RS, 1); /* RS->1 (data mode) */
+			par->fbtftops.write(par, buf, len);
+			if (ret < 0)
+				dev_err(par->info->device,
+					"%s: write failed and returned: %d\n",
+					__func__, ret);
+		}
+	}
+	kfree(convert_buf);
+
+	gpio_set_value(par->CS0, 1);
+	gpio_set_value(par->CS1, 1);
+
+	return ret;
+}
+
+static int write(struct fbtft_par *par, void *buf, size_t len)
+{
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	gpio_set_value(par->RW, 0); /* set write mode */
+
+
+	while (len--) {
+		u8 i, data;
+
+		data = *(u8 *) buf++;
+
+		/* set data bus */
+		for (i = 0; i < 8; ++i)
+			gpio_set_value(par->gpio.db[i], data & (1 << i));
+		/* set E */
+		gpio_set_value(par->EPIN, 1);
+		udelay(5);
+		/* unset E - write */
+		gpio_set_value(par->EPIN, 0);
+		udelay(1);
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = TOTALWIDTH,
+	.height = HEIGHT,
+	.fps = FPS,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.verify_gpios = verify_gpios,
+		.request_gpios_match = request_gpios_match,
+		.reset = reset,
+		.write = write,
+		.write_register = write_reg8_bus8,
+		.write_vmem = write_vmem,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "displaytronic,fb_agm1264k-fl", &display);
+
+MODULE_ALIAS("platform:" DRVNAME);
+
+MODULE_DESCRIPTION("Two KS0108 LCD controllers in AGM1264K-FL display");
+MODULE_AUTHOR("ololoshka2871");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_bd663474.c linux-rpi/drivers/staging/fbtft/fb_bd663474.c
--- linux-3.18.10/drivers/staging/fbtft/fb_bd663474.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_bd663474.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,193 @@
+/*
+ * FB driver for the uPD161704 LCD Controller
+ *
+ * Copyright (C) 2014 Seong-Woo Kim
+ *
+ * Based on fb_ili9325.c by Noralf Tronnes
+ * Based on ili9325.c by Jeroen Domburg
+ * Init code from UTFT library by Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_bd663474"
+#define WIDTH		240
+#define HEIGHT		320
+#define BPP		16
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	par->fbtftops.reset(par);
+
+	/* Initialization sequence from Lib_UTFT */
+
+	/* oscillator start */
+	write_reg(par, 0x000,0x0001);	/*oscillator 0: stop, 1: operation */
+	mdelay(10);
+
+	/* Power settings */
+	write_reg(par, 0x100, 0x0000 ); /* power supply setup */
+	write_reg(par, 0x101, 0x0000 );
+	write_reg(par, 0x102, 0x3110 );
+	write_reg(par, 0x103, 0xe200 );
+	write_reg(par, 0x110, 0x009d );
+	write_reg(par, 0x111, 0x0022 );
+	write_reg(par, 0x100, 0x0120 );
+	mdelay( 20 );
+
+	write_reg(par, 0x100, 0x3120 );
+	mdelay( 80 );
+	/* Display control */
+	write_reg(par, 0x001, 0x0100 );
+	write_reg(par, 0x002, 0x0000 );
+	write_reg(par, 0x003, 0x1230 );
+	write_reg(par, 0x006, 0x0000 );
+	write_reg(par, 0x007, 0x0101 );
+	write_reg(par, 0x008, 0x0808 );
+	write_reg(par, 0x009, 0x0000 );
+	write_reg(par, 0x00b, 0x0000 );
+	write_reg(par, 0x00c, 0x0000 );
+	write_reg(par, 0x00d, 0x0018 );
+	/* LTPS control settings */
+	write_reg(par, 0x012, 0x0000 );
+	write_reg(par, 0x013, 0x0000 );
+	write_reg(par, 0x018, 0x0000 );
+	write_reg(par, 0x019, 0x0000 );
+
+	write_reg(par, 0x203, 0x0000 );
+	write_reg(par, 0x204, 0x0000 );
+
+	write_reg(par, 0x210, 0x0000 );
+	write_reg(par, 0x211, 0x00ef );
+	write_reg(par, 0x212, 0x0000 );
+	write_reg(par, 0x213, 0x013f );
+	write_reg(par, 0x214, 0x0000 );
+	write_reg(par, 0x215, 0x0000 );
+	write_reg(par, 0x216, 0x0000 );
+	write_reg(par, 0x217, 0x0000 );
+
+	/* Gray scale settings */
+	write_reg(par, 0x300, 0x5343);
+	write_reg(par, 0x301, 0x1021);
+	write_reg(par, 0x302, 0x0003);
+	write_reg(par, 0x303, 0x0011);
+	write_reg(par, 0x304, 0x050a);
+	write_reg(par, 0x305, 0x4342);
+	write_reg(par, 0x306, 0x1100);
+	write_reg(par, 0x307, 0x0003);
+	write_reg(par, 0x308, 0x1201);
+	write_reg(par, 0x309, 0x050a);
+
+	/* RAM access settings */
+	write_reg(par, 0x400, 0x4027 );
+	write_reg(par, 0x401, 0x0000 );
+	write_reg(par, 0x402, 0x0000 );  /* First screen drive position (1) */
+	write_reg(par, 0x403, 0x013f );  /* First screen drive position (2) */
+	write_reg(par, 0x404, 0x0000 );
+
+	write_reg(par, 0x200, 0x0000 );
+	write_reg(par, 0x201, 0x0000 );
+	write_reg(par, 0x100, 0x7120 );
+	write_reg(par, 0x007, 0x0103 );
+	mdelay( 10 );
+	write_reg(par, 0x007, 0x0113 );
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R200h = Horizontal GRAM Start Address */
+	/* R201h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0200, xs);
+		write_reg(par, 0x0201, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0200, WIDTH - 1 - xs);
+		write_reg(par, 0x0201, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0200, WIDTH - 1 - ys);
+		write_reg(par, 0x0201, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0200, ys);
+		write_reg(par, 0x0201, HEIGHT - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x202); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	/* AM: GRAM update direction */
+	case 0:
+		write_reg(par, 0x003, 0x1230);
+		break;
+	case 180:
+		write_reg(par, 0x003, 0x1200);
+		break;
+	case 270:
+		write_reg(par, 0x003, 0x1228);
+		break;
+	case 90:
+		write_reg(par, 0x003, 0x1218);
+		break;
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.bpp = BPP,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "hitachi,bd663474", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:bd663474");
+MODULE_ALIAS("platform:bd663474");
+
+MODULE_DESCRIPTION("FB driver for the uPD161704 LCD Controller");
+MODULE_AUTHOR("Seong-Woo Kim");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_hx8340bn.c linux-rpi/drivers/staging/fbtft/fb_hx8340bn.c
--- linux-3.18.10/drivers/staging/fbtft/fb_hx8340bn.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_hx8340bn.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,229 @@
+/*
+ * FB driver for the HX8340BN LCD Controller
+ *
+ * This display uses 9-bit SPI: Data/Command bit + 8 data bits
+ * For platforms that doesn't support 9-bit, the driver is capable
+ * of emulating this using 8-bit transfer.
+ * This is done by transfering eight 9-bit words in 9 bytes.
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_hx8340bn"
+#define WIDTH		176
+#define HEIGHT		220
+#define TXBUFLEN	(4 * PAGE_SIZE)
+#define DEFAULT_GAMMA	"1 3 0E 5 0 2 09 0 6 1 7 1 0 2 2\n" \
+			"3 3 17 8 4 7 05 7 6 0 3 1 6 0 0 "
+
+
+static bool emulate;
+module_param(emulate, bool, 0);
+MODULE_PARM_DESC(emulate, "Force emulation in 9-bit mode");
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* BTL221722-276L startup sequence, from datasheet */
+
+	/* SETEXTCOM: Set extended command set (C1h)
+	   This command is used to set extended command set access enable.
+	   Enable: After command (C1h), must write: ffh,83h,40h */
+	write_reg(par, 0xC1, 0xFF, 0x83, 0x40);
+
+	/* Sleep out
+	   This command turns off sleep mode.
+	   In this mode the DC/DC converter is enabled, Internal oscillator
+	   is started, and panel scanning is started. */
+	write_reg(par, 0x11);
+	mdelay(150);
+
+	/* Undoc'd register? */
+	write_reg(par, 0xCA, 0x70, 0x00, 0xD9);
+
+	/* SETOSC: Set Internal Oscillator (B0h)
+	   This command is used to set internal oscillator related settings */
+	/*	OSC_EN: Enable internal oscillator */
+	/*	Internal oscillator frequency: 125% x 2.52MHz */
+	write_reg(par, 0xB0, 0x01, 0x11);
+
+	/* Drive ability setting */
+	write_reg(par, 0xC9, 0x90, 0x49, 0x10, 0x28, 0x28, 0x10, 0x00, 0x06);
+	mdelay(20);
+
+	/* SETPWCTR5: Set Power Control 5(B5h)
+	   This command is used to set VCOM Low and VCOM High Voltage */
+	/* VCOMH 0110101 :  3.925 */
+	/* VCOML 0100000 : -1.700 */
+	/* 45h=69  VCOMH: "VMH" + 5d   VCOML: "VMH" + 5d */
+	write_reg(par, 0xB5, 0x35, 0x20, 0x45);
+
+	/* SETPWCTR4: Set Power Control 4(B4h)
+		VRH[4:0]:	Specify the VREG1 voltage adjusting.
+				VREG1 voltage is for gamma voltage setting.
+		BT[2:0]:	Switch the output factor of step-up circuit 2
+				for VGH and VGL voltage generation. */
+	write_reg(par, 0xB4, 0x33, 0x25, 0x4C);
+	mdelay(10);
+
+	/* Interface Pixel Format (3Ah)
+	   This command is used to define the format of RGB picture data,
+	   which is to be transfer via the system and RGB interface. */
+	/* RGB interface: 16 Bit/Pixel	*/
+	write_reg(par, 0x3A, 0x05);
+
+	/* Display on (29h)
+	   This command is used to recover from DISPLAY OFF mode.
+	   Output from the Frame Memory is enabled. */
+	write_reg(par, 0x29);
+	mdelay(10);
+
+	return 0;
+}
+
+void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, FBTFT_CASET, 0x00, xs, 0x00, xe);
+	write_reg(par, FBTFT_RASET, 0x00, ys, 0x00, ye);
+	write_reg(par, FBTFT_RAMWR);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* MADCTL - Memory data access control */
+	/* RGB/BGR can be set with H/W pin SRGB and MADCTL BGR bit */
+#define MY (1 << 7)
+#define MX (1 << 6)
+#define MV (1 << 5)
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, MX | MV | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, MX | MY | (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, MY | MV | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma Curve selection, GC (only GC0 can be customized):
+    0 = 2.2, 1 = 1.8, 2 = 2.5, 3 = 1.0
+  Gamma string format:
+    OP0 OP1 CP0 CP1 CP2 CP3 CP4 MP0 MP1 MP2 MP3 MP4 MP5 CGM0 CGM1
+    ON0 ON1 CN0 CN1 CN2 CN3 CN4 MN0 MN1 MN2 MN3 MN4 MN5 XXXX  GC
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b1111, 0b1111, 0b11111, 0b1111, 0b1111, 0b1111, 0b11111,
+		0b111, 0b111, 0b111, 0b111, 0b111, 0b111, 0b11, 0b11,
+		0b1111, 0b1111, 0b11111, 0b1111, 0b1111, 0b1111, 0b11111,
+		0b111, 0b111, 0b111, 0b111, 0b111, 0b111, 0b0, 0b0 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < par->gamma.num_curves; i++)
+		for (j = 0; j < par->gamma.num_values; j++)
+			CURVE(i, j) &= mask[i * par->gamma.num_values + j];
+
+	write_reg(par, 0x26, 1 << CURVE(1, 14)); /* Gamma Set (26h) */
+
+	if (CURVE(1, 14))
+		return 0; /* only GC0 can be customized */
+
+	write_reg(par, 0xC2,
+		(CURVE(0, 8) << 4) | CURVE(0, 7),
+		(CURVE(0, 10) << 4) | CURVE(0, 9),
+		(CURVE(0, 12) << 4) | CURVE(0, 11),
+		CURVE(0, 2),
+		(CURVE(0, 4) << 4) | CURVE(0, 3),
+		CURVE(0, 5),
+		CURVE(0, 6),
+		(CURVE(0, 1) << 4) | CURVE(0, 0),
+		(CURVE(0, 14) << 2) | CURVE(0, 13));
+
+	write_reg(par, 0xC3,
+		(CURVE(1, 8) << 4) | CURVE(1, 7),
+		(CURVE(1, 10) << 4) | CURVE(1, 9),
+		(CURVE(1, 12) << 4) | CURVE(1, 11),
+		CURVE(1, 2),
+		(CURVE(1, 4) << 4) | CURVE(1, 3),
+		CURVE(1, 5),
+		CURVE(1, 6),
+		(CURVE(1, 1) << 4) | CURVE(1, 0));
+
+	mdelay(10);
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.txbuflen = TXBUFLEN,
+	.gamma_num = 2,
+	.gamma_len = 15,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "himax,hx8340bn", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:hx8340bn");
+MODULE_ALIAS("platform:hx8340bn");
+
+MODULE_DESCRIPTION("FB driver for the HX8340BN LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_hx8347d.c linux-rpi/drivers/staging/fbtft/fb_hx8347d.c
--- linux-3.18.10/drivers/staging/fbtft/fb_hx8347d.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_hx8347d.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,181 @@
+/*
+ * FB driver for the HX8347D LCD Controller
+ *
+ * Copyright (C) 2013 Christian Vogelgsang
+ *
+ * Based on driver code found here: https://github.com/watterott/r61505u-Adapter
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_hx8347d"
+#define WIDTH		320
+#define HEIGHT		240
+#define DEFAULT_GAMMA	"0 0 0 0 0 0 0 0 0 0 0 0 0 0\n" \
+			"0 0 0 0 0 0 0 0 0 0 0 0 0 0"
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* driving ability */
+	write_reg(par, 0xEA, 0x00);
+	write_reg(par, 0xEB, 0x20);
+	write_reg(par, 0xEC, 0x0C);
+	write_reg(par, 0xED, 0xC4);
+	write_reg(par, 0xE8, 0x40);
+	write_reg(par, 0xE9, 0x38);
+	write_reg(par, 0xF1, 0x01);
+	write_reg(par, 0xF2, 0x10);
+	write_reg(par, 0x27, 0xA3);
+
+	/* power voltage */
+	write_reg(par, 0x1B, 0x1B);
+	write_reg(par, 0x1A, 0x01);
+	write_reg(par, 0x24, 0x2F);
+	write_reg(par, 0x25, 0x57);
+
+	/* VCOM offset */
+	write_reg(par, 0x23, 0x8D); /* for flicker adjust */
+
+	/* power on */
+	write_reg(par, 0x18, 0x36);
+	write_reg(par, 0x19, 0x01); /* start osc */
+	write_reg(par, 0x01, 0x00); /* wakeup */
+	write_reg(par, 0x1F, 0x88);
+	mdelay(5);
+	write_reg(par, 0x1F, 0x80);
+	mdelay(5);
+	write_reg(par, 0x1F, 0x90);
+	mdelay(5);
+	write_reg(par, 0x1F, 0xD0);
+	mdelay(5);
+
+	/* color selection */
+	write_reg(par, 0x17, 0x05); /* 65k */
+
+	/*panel characteristic */
+	write_reg(par, 0x36, 0x00);
+
+	/*display on */
+	write_reg(par, 0x28, 0x38);
+	mdelay(40);
+	write_reg(par, 0x28, 0x3C);
+
+	/* orientation */
+	write_reg(par, 0x16, 0x60 | (par->bgr << 3));
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, 0x02, (xs >> 8) & 0xFF);
+	write_reg(par, 0x03, xs & 0xFF);
+	write_reg(par, 0x04, (xe >> 8) & 0xFF);
+	write_reg(par, 0x05, xe & 0xFF);
+	write_reg(par, 0x06, (ys >> 8) & 0xFF);
+	write_reg(par, 0x07, ys & 0xFF);
+	write_reg(par, 0x08, (ye >> 8) & 0xFF);
+	write_reg(par, 0x09, ye & 0xFF);
+	write_reg(par, 0x22);
+}
+
+/*
+  Gamma string format:
+    VRP0 VRP1 VRP2 VRP3 VRP4 VRP5 PRP0 PRP1 PKP0 PKP1 PKP2 PKP3 PKP4 CGM
+    VRN0 VRN1 VRN2 VRN3 VRN4 VRN5 PRN0 PRN1 PKN0 PKN1 PKN2 PKN3 PKN4 CGM
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111,
+		0b1111111, 0b1111111,
+		0b11111, 0b11111, 0b11111, 0b11111, 0b11111,
+		0b1111};
+	int i, j;
+	int acc = 0;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < par->gamma.num_curves; i++)
+		for (j = 0; j < par->gamma.num_values; j++) {
+			acc += CURVE(i, j);
+			CURVE(i, j) &= mask[j];
+		}
+
+	if (acc == 0) /* skip if all values are zero */
+		return 0;
+
+	for (i = 0; i < par->gamma.num_curves; i++) {
+		write_reg(par, 0x40 + (i * 0x10), CURVE(i, 0));
+		write_reg(par, 0x41 + (i * 0x10), CURVE(i, 1));
+		write_reg(par, 0x42 + (i * 0x10), CURVE(i, 2));
+		write_reg(par, 0x43 + (i * 0x10), CURVE(i, 3));
+		write_reg(par, 0x44 + (i * 0x10), CURVE(i, 4));
+		write_reg(par, 0x45 + (i * 0x10), CURVE(i, 5));
+		write_reg(par, 0x46 + (i * 0x10), CURVE(i, 6));
+		write_reg(par, 0x47 + (i * 0x10), CURVE(i, 7));
+		write_reg(par, 0x48 + (i * 0x10), CURVE(i, 8));
+		write_reg(par, 0x49 + (i * 0x10), CURVE(i, 9));
+		write_reg(par, 0x4A + (i * 0x10), CURVE(i, 10));
+		write_reg(par, 0x4B + (i * 0x10), CURVE(i, 11));
+		write_reg(par, 0x4C + (i * 0x10), CURVE(i, 12));
+	}
+	write_reg(par, 0x5D, (CURVE(1, 0) << 4) | CURVE(0, 0));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = 2,
+	.gamma_len = 14,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "himax,hx8347d", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:hx8347d");
+MODULE_ALIAS("platform:hx8347d");
+
+MODULE_DESCRIPTION("FB driver for the HX8347D LCD Controller");
+MODULE_AUTHOR("Christian Vogelgsang");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_hx8353d.c linux-rpi/drivers/staging/fbtft/fb_hx8353d.c
--- linux-3.18.10/drivers/staging/fbtft/fb_hx8353d.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_hx8353d.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,166 @@
+/*
+ * FB driver for the HX8353D LCD Controller
+ *
+ * Copyright (c) 2014 Petr Olivka
+ * Copyright (c) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fb_hx8353d"
+#define DEFAULT_GAMMA "50 77 40 08 BF 00 03 0F 00 01 73 00 72 03 B0 0F 08 00 0F"
+
+static int init_display(struct fbtft_par *par)
+{
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+	mdelay(150);
+
+	/* SETEXTC */
+	write_reg(par, 0xB9, 0xFF, 0x83, 0x53);
+
+	/* RADJ */
+	write_reg(par, 0xB0, 0x3C, 0x01);
+
+	/* VCOM */
+	write_reg(par, 0xB6, 0x94, 0x6C, 0x50);
+
+	/* PWR */
+	write_reg(par, 0xB1, 0x00, 0x01, 0x1B, 0x03, 0x01, 0x08, 0x77, 0x89);
+
+	/* COLMOD */
+	write_reg(par, 0x3A, 0x05);
+
+	/* MEM ACCESS */
+	write_reg(par, 0x36, 0xC0);
+
+	/* SLPOUT - Sleep out & booster on */
+	write_reg(par, 0x11);
+	mdelay(150);
+
+	/* DISPON - Display On */
+	write_reg(par, 0x29);
+
+	/* RGBSET */
+	write_reg(par, 0x2D,
+		 0,  2,  4,  6,  8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
+		32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62,
+		 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+		16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+		32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+		48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
+		 0,  2,  4,  6,  8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
+		32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62);
+
+	return 0;
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* column address */
+	write_reg(par, 0x2a, xs >> 8, xs & 0xff, xe >> 8, xe & 0xff);
+
+	/* row adress */
+	write_reg(par, 0x2b, ys >> 8, ys & 0xff, ye >> 8, ye & 0xff);
+
+	/* memory write */
+	write_reg(par, 0x2c);
+}
+
+#define my (1 << 7)
+#define mx (1 << 6)
+#define mv (1 << 5)
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* madctl - memory data access control
+	     rgb/bgr:
+	     1. mode selection pin srgb
+		rgb h/w pin for color filter setting: 0=rgb, 1=bgr
+	     2. madctl rgb bit
+		rgb-bgr order color filter panel: 0=rgb, 1=bgr */
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, mx | my | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, my | mv | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, mx | mv | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  gamma string format:
+*/
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	write_reg(par, 0xE0,
+		curves[0], curves[1], curves[2], curves[3],
+		curves[4], curves[5], curves[6], curves[7],
+		curves[8], curves[9], curves[10], curves[11],
+		curves[12], curves[13], curves[14], curves[15],
+		curves[16], curves[17], curves[18]);
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = 128,
+	.height = 160,
+	.gamma_num = 1,
+	.gamma_len = 19,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "himax,hx8353d", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:hx8353d");
+MODULE_ALIAS("platform:hx8353d");
+
+MODULE_DESCRIPTION("FB driver for the HX8353D LCD Controller");
+MODULE_AUTHOR("Petr Olivka");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ili9320.c linux-rpi/drivers/staging/fbtft/fb_ili9320.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ili9320.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ili9320.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,234 @@
+/*
+ * FB driver for the ILI9320 LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9320"
+#define WIDTH		240
+#define HEIGHT		320
+#define DEFAULT_GAMMA	"07 07 6 0 0 0 5 5 4 0\n" \
+			"07 08 4 7 5 1 2 0 7 7"
+
+
+static unsigned read_devicecode(struct fbtft_par *par)
+{
+	int ret;
+	u8 rxbuf[8] = {0, };
+
+	write_reg(par, 0x0000);
+	ret = par->fbtftops.read(par, rxbuf, 4);
+	return (rxbuf[2] << 8) | rxbuf[3];
+}
+
+static int init_display(struct fbtft_par *par)
+{
+	unsigned devcode;
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	devcode = read_devicecode(par);
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "Device code: 0x%04X\n",
+		devcode);
+	if ((devcode != 0x0000) && (devcode != 0x9320))
+		dev_warn(par->info->device,
+			"Unrecognized Device code: 0x%04X (expected 0x9320)\n",
+			devcode);
+
+	/* Initialization sequence from ILI9320 Application Notes */
+
+	/* *********** Start Initial Sequence ********* */
+	write_reg(par, 0x00E5, 0x8000); /* Set the Vcore voltage and this setting is must. */
+	write_reg(par, 0x0000, 0x0001); /* Start internal OSC. */
+	write_reg(par, 0x0001, 0x0100); /* set SS and SM bit */
+	write_reg(par, 0x0002, 0x0700); /* set 1 line inversion */
+	write_reg(par, 0x0004, 0x0000); /* Resize register */
+	write_reg(par, 0x0008, 0x0202); /* set the back and front porch */
+	write_reg(par, 0x0009, 0x0000); /* set non-display area refresh cycle */
+	write_reg(par, 0x000A, 0x0000); /* FMARK function */
+	write_reg(par, 0x000C, 0x0000); /* RGB interface setting */
+	write_reg(par, 0x000D, 0x0000); /* Frame marker Position */
+	write_reg(par, 0x000F, 0x0000); /* RGB interface polarity */
+
+	/* ***********Power On sequence *************** */
+	write_reg(par, 0x0010, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+	write_reg(par, 0x0011, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */
+	write_reg(par, 0x0012, 0x0000); /* VREG1OUT voltage */
+	write_reg(par, 0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
+	mdelay(200); /* Dis-charge capacitor power voltage */
+	write_reg(par, 0x0010, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+	write_reg(par, 0x0011, 0x0031); /* R11h=0x0031 at VCI=3.3V DC1[2:0], DC0[2:0], VC[2:0] */
+	mdelay(50);
+	write_reg(par, 0x0012, 0x0138); /* R12h=0x0138 at VCI=3.3V VREG1OUT voltage */
+	mdelay(50);
+	write_reg(par, 0x0013, 0x1800); /* R13h=0x1800 at VCI=3.3V VDV[4:0] for VCOM amplitude */
+	write_reg(par, 0x0029, 0x0008); /* R29h=0x0008 at VCI=3.3V VCM[4:0] for VCOMH */
+	mdelay(50);
+	write_reg(par, 0x0020, 0x0000); /* GRAM horizontal Address */
+	write_reg(par, 0x0021, 0x0000); /* GRAM Vertical Address */
+
+	/* ------------------ Set GRAM area --------------- */
+	write_reg(par, 0x0050, 0x0000); /* Horizontal GRAM Start Address */
+	write_reg(par, 0x0051, 0x00EF); /* Horizontal GRAM End Address */
+	write_reg(par, 0x0052, 0x0000); /* Vertical GRAM Start Address */
+	write_reg(par, 0x0053, 0x013F); /* Vertical GRAM Start Address */
+	write_reg(par, 0x0060, 0x2700); /* Gate Scan Line */
+	write_reg(par, 0x0061, 0x0001); /* NDL,VLE, REV */
+	write_reg(par, 0x006A, 0x0000); /* set scrolling line */
+
+	/* -------------- Partial Display Control --------- */
+	write_reg(par, 0x0080, 0x0000);
+	write_reg(par, 0x0081, 0x0000);
+	write_reg(par, 0x0082, 0x0000);
+	write_reg(par, 0x0083, 0x0000);
+	write_reg(par, 0x0084, 0x0000);
+	write_reg(par, 0x0085, 0x0000);
+
+	/* -------------- Panel Control ------------------- */
+	write_reg(par, 0x0090, 0x0010);
+	write_reg(par, 0x0092, 0x0000);
+	write_reg(par, 0x0093, 0x0003);
+	write_reg(par, 0x0095, 0x0110);
+	write_reg(par, 0x0097, 0x0000);
+	write_reg(par, 0x0098, 0x0000);
+	write_reg(par, 0x0007, 0x0173); /* 262K color and display ON */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0020, xs);
+		write_reg(par, 0x0021, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0020, WIDTH - 1 - xs);
+		write_reg(par, 0x0021, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0020, WIDTH - 1 - ys);
+		write_reg(par, 0x0021, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0020, ys);
+		write_reg(par, 0x0021, HEIGHT - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x3, (par->bgr << 12) | 0x30);
+		break;
+	case 270:
+		write_reg(par, 0x3, (par->bgr << 12) | 0x28);
+		break;
+	case 180:
+		write_reg(par, 0x3, (par->bgr << 12) | 0x00);
+		break;
+	case 90:
+		write_reg(par, 0x3, (par->bgr << 12) | 0x18);
+		break;
+	}
+	return 0;
+}
+
+/*
+  Gamma string format:
+    VRP0 VRP1 RP0 RP1 KP0 KP1 KP2 KP3 KP4 KP5
+    VRN0 VRN1 RN0 RN1 KN0 KN1 KN2 KN3 KN4 KN5
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111,
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < 2; i++)
+		for (j = 0; j < 10; j++)
+			CURVE(i, j) &= mask[i*par->gamma.num_values + j];
+
+	write_reg(par, 0x0030, CURVE(0, 5) << 8 | CURVE(0, 4));
+	write_reg(par, 0x0031, CURVE(0, 7) << 8 | CURVE(0, 6));
+	write_reg(par, 0x0032, CURVE(0, 9) << 8 | CURVE(0, 8));
+	write_reg(par, 0x0035, CURVE(0, 3) << 8 | CURVE(0, 2));
+	write_reg(par, 0x0036, CURVE(0, 1) << 8 | CURVE(0, 0));
+
+	write_reg(par, 0x0037, CURVE(1, 5) << 8 | CURVE(1, 4));
+	write_reg(par, 0x0038, CURVE(1, 7) << 8 | CURVE(1, 6));
+	write_reg(par, 0x0039, CURVE(1, 9) << 8 | CURVE(1, 8));
+	write_reg(par, 0x003C, CURVE(1, 3) << 8 | CURVE(1, 2));
+	write_reg(par, 0x003D, CURVE(1, 1) << 8 | CURVE(1, 0));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = 2,
+	.gamma_len = 10,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9320", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9320");
+MODULE_ALIAS("platform:ili9320");
+
+MODULE_DESCRIPTION("FB driver for the ILI9320 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ili9325.c linux-rpi/drivers/staging/fbtft/fb_ili9325.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ili9325.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ili9325.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,291 @@
+/*
+ * FB driver for the ILI9325 LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * Based on ili9325.c by Jeroen Domburg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9325"
+#define WIDTH		240
+#define HEIGHT		320
+#define BPP		16
+#define FPS		20
+#define DEFAULT_GAMMA	"0F 00 7 2 0 0 6 5 4 1\n" \
+			"04 16 2 7 6 3 2 1 7 7"
+
+
+static unsigned bt = 6; /* VGL=Vci*4 , VGH=Vci*4 */
+module_param(bt, uint, 0);
+MODULE_PARM_DESC(bt, "Sets the factor used in the step-up circuits");
+
+static unsigned vc = 0b011; /* Vci1=Vci*0.80 */
+module_param(vc, uint, 0);
+MODULE_PARM_DESC(vc,
+"Sets the ratio factor of Vci to generate the reference voltages Vci1");
+
+static unsigned vrh = 0b1101; /* VREG1OUT=Vci*1.85 */
+module_param(vrh, uint, 0);
+MODULE_PARM_DESC(vrh,
+"Set the amplifying rate (1.6 ~ 1.9) of Vci applied to output the VREG1OUT");
+
+static unsigned vdv = 0b10010; /* VCOMH amplitude=VREG1OUT*0.98 */
+module_param(vdv, uint, 0);
+MODULE_PARM_DESC(vdv,
+"Select the factor of VREG1OUT to set the amplitude of Vcom");
+
+static unsigned vcm = 0b001010; /* VCOMH=VREG1OUT*0.735 */
+module_param(vcm, uint, 0);
+MODULE_PARM_DESC(vcm, "Set the internal VcomH voltage");
+
+
+/*
+Verify that this configuration is within the Voltage limits
+
+Display module configuration: Vcc = IOVcc = Vci = 3.3V
+
+ Voltages
+----------
+Vci                                =   3.3
+Vci1           =  Vci * 0.80       =   2.64
+DDVDH          =  Vci1 * 2         =   5.28
+VCL            = -Vci1             =  -2.64
+VREG1OUT       =  Vci * 1.85       =   4.88
+VCOMH          =  VREG1OUT * 0.735 =   3.59
+VCOM amplitude =  VREG1OUT * 0.98  =   4.79
+VGH            =  Vci * 4          =  13.2
+VGL            = -Vci * 4          = -13.2
+
+ Limits
+--------
+Power supplies
+1.65 < IOVcc < 3.30   =>  1.65 < 3.3 < 3.30
+2.40 < Vcc   < 3.30   =>  2.40 < 3.3 < 3.30
+2.50 < Vci   < 3.30   =>  2.50 < 3.3 < 3.30
+
+Source/VCOM power supply voltage
+ 4.50 < DDVDH < 6.0   =>  4.50 <  5.28 <  6.0
+-3.0  < VCL   < -2.0  =>  -3.0 < -2.64 < -2.0
+VCI - VCL < 6.0       =>  5.94 < 6.0
+
+Gate driver output voltage
+ 10  < VGH   < 20     =>   10 <  13.2  < 20
+-15  < VGL   < -5     =>  -15 < -13.2  < -5
+VGH - VGL < 32        =>   26.4 < 32
+
+VCOM driver output voltage
+VCOMH - VCOML < 6.0   =>  4.79 < 6.0
+*/
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	bt &= 0b111;
+	vc &= 0b111;
+	vrh &= 0b1111;
+	vdv &= 0b11111;
+	vcm &= 0b111111;
+
+	/* Initialization sequence from ILI9325 Application Notes */
+
+	/* ----------- Start Initial Sequence ----------- */
+	write_reg(par, 0x00E3, 0x3008); /* Set internal timing */
+	write_reg(par, 0x00E7, 0x0012); /* Set internal timing */
+	write_reg(par, 0x00EF, 0x1231); /* Set internal timing */
+	write_reg(par, 0x0001, 0x0100); /* set SS and SM bit */
+	write_reg(par, 0x0002, 0x0700); /* set 1 line inversion */
+	write_reg(par, 0x0004, 0x0000); /* Resize register */
+	write_reg(par, 0x0008, 0x0207); /* set the back porch and front porch */
+	write_reg(par, 0x0009, 0x0000); /* set non-display area refresh cycle */
+	write_reg(par, 0x000A, 0x0000); /* FMARK function */
+	write_reg(par, 0x000C, 0x0000); /* RGB interface setting */
+	write_reg(par, 0x000D, 0x0000); /* Frame marker Position */
+	write_reg(par, 0x000F, 0x0000); /* RGB interface polarity */
+
+	/* ----------- Power On sequence ----------- */
+	write_reg(par, 0x0010, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+	write_reg(par, 0x0011, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */
+	write_reg(par, 0x0012, 0x0000); /* VREG1OUT voltage */
+	write_reg(par, 0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
+	mdelay(200); /* Dis-charge capacitor power voltage */
+	write_reg(par, 0x0010, /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+		(1 << 12) | (bt << 8) | (1 << 7) | (0b001 << 4));
+	write_reg(par, 0x0011, 0x220 | vc); /* DC1[2:0], DC0[2:0], VC[2:0] */
+	mdelay(50); /* Delay 50ms */
+	write_reg(par, 0x0012, vrh); /* Internal reference voltage= Vci; */
+	mdelay(50); /* Delay 50ms */
+	write_reg(par, 0x0013, vdv << 8); /* Set VDV[4:0] for VCOM amplitude */
+	write_reg(par, 0x0029, vcm); /* Set VCM[5:0] for VCOMH */
+	write_reg(par, 0x002B, 0x000C); /* Set Frame Rate */
+	mdelay(50); /* Delay 50ms */
+	write_reg(par, 0x0020, 0x0000); /* GRAM horizontal Address */
+	write_reg(par, 0x0021, 0x0000); /* GRAM Vertical Address */
+
+	/*------------------ Set GRAM area --------------- */
+	write_reg(par, 0x0050, 0x0000); /* Horizontal GRAM Start Address */
+	write_reg(par, 0x0051, 0x00EF); /* Horizontal GRAM End Address */
+	write_reg(par, 0x0052, 0x0000); /* Vertical GRAM Start Address */
+	write_reg(par, 0x0053, 0x013F); /* Vertical GRAM Start Address */
+	write_reg(par, 0x0060, 0xA700); /* Gate Scan Line */
+	write_reg(par, 0x0061, 0x0001); /* NDL,VLE, REV */
+	write_reg(par, 0x006A, 0x0000); /* set scrolling line */
+
+	/*-------------- Partial Display Control --------- */
+	write_reg(par, 0x0080, 0x0000);
+	write_reg(par, 0x0081, 0x0000);
+	write_reg(par, 0x0082, 0x0000);
+	write_reg(par, 0x0083, 0x0000);
+	write_reg(par, 0x0084, 0x0000);
+	write_reg(par, 0x0085, 0x0000);
+
+	/*-------------- Panel Control ------------------- */
+	write_reg(par, 0x0090, 0x0010);
+	write_reg(par, 0x0092, 0x0600);
+	write_reg(par, 0x0007, 0x0133); /* 262K color and display ON */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0020, xs);
+		write_reg(par, 0x0021, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0020, WIDTH - 1 - xs);
+		write_reg(par, 0x0021, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0020, WIDTH - 1 - ys);
+		write_reg(par, 0x0021, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0020, ys);
+		write_reg(par, 0x0021, HEIGHT - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	/* AM: GRAM update direction */
+	case 0:
+		write_reg(par, 0x03, 0x0030 | (par->bgr << 12));
+		break;
+	case 180:
+		write_reg(par, 0x03, 0x0000 | (par->bgr << 12));
+		break;
+	case 270:
+		write_reg(par, 0x03, 0x0028 | (par->bgr << 12));
+		break;
+	case 90:
+		write_reg(par, 0x03, 0x0018 | (par->bgr << 12));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    VRP0 VRP1 RP0 RP1 KP0 KP1 KP2 KP3 KP4 KP5
+    VRN0 VRN1 RN0 RN1 KN0 KN1 KN2 KN3 KN4 KN5
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111,
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < 2; i++)
+		for (j = 0; j < 10; j++)
+			CURVE(i, j) &= mask[i*par->gamma.num_values + j];
+
+	write_reg(par, 0x0030, CURVE(0, 5) << 8 | CURVE(0, 4));
+	write_reg(par, 0x0031, CURVE(0, 7) << 8 | CURVE(0, 6));
+	write_reg(par, 0x0032, CURVE(0, 9) << 8 | CURVE(0, 8));
+	write_reg(par, 0x0035, CURVE(0, 3) << 8 | CURVE(0, 2));
+	write_reg(par, 0x0036, CURVE(0, 1) << 8 | CURVE(0, 0));
+
+	write_reg(par, 0x0037, CURVE(1, 5) << 8 | CURVE(1, 4));
+	write_reg(par, 0x0038, CURVE(1, 7) << 8 | CURVE(1, 6));
+	write_reg(par, 0x0039, CURVE(1, 9) << 8 | CURVE(1, 8));
+	write_reg(par, 0x003C, CURVE(1, 3) << 8 | CURVE(1, 2));
+	write_reg(par, 0x003D, CURVE(1, 1) << 8 | CURVE(1, 0));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.bpp = BPP,
+	.fps = FPS,
+	.gamma_num = 2,
+	.gamma_len = 10,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9325", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9325");
+MODULE_ALIAS("platform:ili9325");
+
+MODULE_DESCRIPTION("FB driver for the ILI9325 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ili9340.c linux-rpi/drivers/staging/fbtft/fb_ili9340.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ili9340.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ili9340.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,163 @@
+/*
+ * FB driver for the ILI9340 LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9340"
+#define WIDTH		240
+#define HEIGHT		320
+
+
+/* Init sequence taken from: Arduino Library for the Adafruit 2.2" display */
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	write_reg(par, 0xEF, 0x03, 0x80, 0x02);
+	write_reg(par, 0xCF, 0x00 , 0XC1 , 0X30);
+	write_reg(par, 0xED, 0x64 , 0x03 , 0X12 , 0X81);
+	write_reg(par, 0xE8, 0x85 , 0x00 , 0x78);
+	write_reg(par, 0xCB, 0x39 , 0x2C , 0x00 , 0x34 , 0x02);
+	write_reg(par, 0xF7, 0x20);
+	write_reg(par, 0xEA, 0x00 , 0x00);
+
+	/* Power Control 1 */
+	write_reg(par, 0xC0, 0x23);
+
+	/* Power Control 2 */
+	write_reg(par, 0xC1, 0x10);
+
+	/* VCOM Control 1 */
+	write_reg(par, 0xC5, 0x3e, 0x28);
+
+	/* VCOM Control 2 */
+	write_reg(par, 0xC7, 0x86);
+
+	/* COLMOD: Pixel Format Set */
+	/* 16 bits/pixel */
+	write_reg(par, 0x3A, 0x55);
+
+	/* Frame Rate Control */
+	/* Division ratio = fosc, Frame Rate = 79Hz */
+	write_reg(par, 0xB1, 0x00, 0x18);
+
+	/* Display Function Control */
+	write_reg(par, 0xB6, 0x08, 0x82, 0x27);
+
+	/* Gamma Function Disable */
+	write_reg(par, 0xF2, 0x00);
+
+	/* Gamma curve selected  */
+	write_reg(par, 0x26, 0x01);
+
+	/* Positive Gamma Correction */
+	write_reg(par, 0xE0,
+		0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1,
+		0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00);
+
+	/* Negative Gamma Correction */
+	write_reg(par, 0xE1,
+		0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1,
+		0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F);
+
+	/* Sleep OUT */
+	write_reg(par, 0x11);
+
+	mdelay(120);
+
+	/* Display ON */
+	write_reg(par, 0x29);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+#define ILI9340_MADCTL_MV  0x20
+#define ILI9340_MADCTL_MX  0x40
+#define ILI9340_MADCTL_MY  0x80
+static int set_var(struct fbtft_par *par)
+{
+	u8 val;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 270:
+		val = ILI9340_MADCTL_MV;
+		break;
+	case 180:
+		val = ILI9340_MADCTL_MY;
+		break;
+	case 90:
+		val = ILI9340_MADCTL_MV | ILI9340_MADCTL_MY | ILI9340_MADCTL_MX;
+		break;
+	default:
+		val = ILI9340_MADCTL_MX;
+		break;
+	}
+	/* Memory Access Control  */
+	write_reg(par, 0x36, val | (par->bgr << 3));
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9340", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9340");
+MODULE_ALIAS("platform:ili9340");
+
+MODULE_DESCRIPTION("FB driver for the ILI9340 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ili9341.c linux-rpi/drivers/staging/fbtft/fb_ili9341.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ili9341.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ili9341.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,179 @@
+/*
+ * FB driver for the ILI9341 LCD display controller
+ *
+ * This display uses 9-bit SPI: Data/Command bit + 8 data bits
+ * For platforms that doesn't support 9-bit, the driver is capable
+ * of emulating this using 8-bit transfer.
+ * This is done by transfering eight 9-bit words in 9 bytes.
+ *
+ * Copyright (C) 2013 Christian Vogelgsang
+ * Based on adafruit22fb.c by Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9341"
+#define WIDTH		240
+#define HEIGHT		320
+#define TXBUFLEN	(4 * PAGE_SIZE)
+#define DEFAULT_GAMMA	"1F 1A 18 0A 0F 06 45 87 32 0A 07 02 07 05 00\n" \
+			"00 25 27 05 10 09 3A 78 4D 05 18 0D 38 3A 1F"
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* startup sequence for MI0283QT-9A */
+	write_reg(par, 0x01); /* software reset */
+	mdelay(5);
+	write_reg(par, 0x28); /* display off */
+	/* --------------------------------------------------------- */
+	write_reg(par, 0xCF, 0x00, 0x83, 0x30);
+	write_reg(par, 0xED, 0x64, 0x03, 0x12, 0x81);
+	write_reg(par, 0xE8, 0x85, 0x01, 0x79);
+	write_reg(par, 0xCB, 0x39, 0X2C, 0x00, 0x34, 0x02);
+	write_reg(par, 0xF7, 0x20);
+	write_reg(par, 0xEA, 0x00, 0x00);
+	/* ------------power control-------------------------------- */
+	write_reg(par, 0xC0, 0x26);
+	write_reg(par, 0xC1, 0x11);
+	/* ------------VCOM --------- */
+	write_reg(par, 0xC5, 0x35, 0x3E);
+	write_reg(par, 0xC7, 0xBE);
+	/* ------------memory access control------------------------ */
+	write_reg(par, 0x3A, 0x55); /* 16bit pixel */
+	/* ------------frame rate----------------------------------- */
+	write_reg(par, 0xB1, 0x00, 0x1B);
+	/* ------------Gamma---------------------------------------- */
+	/* write_reg(par, 0xF2, 0x08); */ /* Gamma Function Disable */
+	write_reg(par, 0x26, 0x01);
+	/* ------------display-------------------------------------- */
+	write_reg(par, 0xB7, 0x07); /* entry mode set */
+	write_reg(par, 0xB6, 0x0A, 0x82, 0x27, 0x00);
+	write_reg(par, 0x11); /* sleep out */
+	mdelay(100);
+	write_reg(par, 0x29); /* display on */
+	mdelay(20);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address set */
+	write_reg(par, 0x2A,
+		(xs >> 8) & 0xFF, xs & 0xFF, (xe >> 8) & 0xFF, xe & 0xFF);
+
+	/* Row adress set */
+	write_reg(par, 0x2B,
+		(ys >> 8) & 0xFF, ys & 0xFF, (ye >> 8) & 0xFF, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+#define MEM_Y   (7) /* MY row address order */
+#define MEM_X   (6) /* MX column address order */
+#define MEM_V   (5) /* MV row / column exchange */
+#define MEM_L   (4) /* ML vertical refresh order */
+#define MEM_H   (2) /* MH horizontal refresh order */
+#define MEM_BGR (3) /* RGB-BGR Order */
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, (1 << MEM_X) | (par->bgr << MEM_BGR));
+		break;
+	case 270:
+		write_reg(par, 0x36,
+			(1<<MEM_V) | (1 << MEM_L) | (par->bgr << MEM_BGR));
+		break;
+	case 180:
+		write_reg(par, 0x36, (1 << MEM_Y) | (par->bgr << MEM_BGR));
+		break;
+	case 90:
+		write_reg(par, 0x36, (1 << MEM_Y) | (1 << MEM_X) |
+				     (1 << MEM_V) | (par->bgr << MEM_BGR));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    Positive: Par1 Par2 [...] Par15
+    Negative: Par1 Par2 [...] Par15
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	int i;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	for (i = 0; i < par->gamma.num_curves; i++)
+		write_reg(par, 0xE0 + i,
+			CURVE(i, 0), CURVE(i, 1), CURVE(i, 2),
+			CURVE(i, 3), CURVE(i, 4), CURVE(i, 5),
+			CURVE(i, 6), CURVE(i, 7), CURVE(i, 8),
+			CURVE(i, 9), CURVE(i, 10), CURVE(i, 11),
+			CURVE(i, 12), CURVE(i, 13), CURVE(i, 14));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.txbuflen = TXBUFLEN,
+	.gamma_num = 2,
+	.gamma_len = 15,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9341", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9341");
+MODULE_ALIAS("platform:ili9341");
+
+MODULE_DESCRIPTION("FB driver for the ILI9341 LCD display controller");
+MODULE_AUTHOR("Christian Vogelgsang");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ili9481.c linux-rpi/drivers/staging/fbtft/fb_ili9481.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ili9481.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ili9481.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,117 @@
+/*
+ * FB driver for the ILI9481 LCD Controller
+ *
+ * Copyright (c) 2014 Petr Olivka
+ * Copyright (c) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME	"fb_ili9481"
+#define WIDTH		320
+#define HEIGHT		480
+
+static int default_init_sequence[] = {
+
+	/* SLP_OUT - Sleep out */
+	-1, 0x11,
+	-2, 50,
+	/* Power setting */
+	-1, 0xD0, 0x07, 0x42, 0x18,
+	/* VCOM */
+	-1, 0xD1, 0x00, 0x07, 0x10,
+	/* Power setting for norm. mode */
+	-1, 0xD2, 0x01, 0x02,
+	/* Panel driving setting */
+	-1, 0xC0, 0x10, 0x3B, 0x00, 0x02, 0x11,
+	/* Frame rate & inv. */
+	-1, 0xC5, 0x03,
+	/* Pixel format */
+	-1, 0x3A, 0x55,
+	/* Gamma */
+	-1, 0xC8, 0x00, 0x32, 0x36, 0x45, 0x06, 0x16,
+		  0x37, 0x75, 0x77, 0x54, 0x0C, 0x00,
+	/* DISP_ON */
+	-1, 0x29,
+	-3
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* column address */
+	write_reg(par, 0x2a, xs >> 8, xs & 0xff, xe >> 8, xe & 0xff);
+
+	/* row adress */
+	write_reg(par, 0x2b, ys >> 8, ys & 0xff, ye >> 8, ye & 0xff);
+
+	/* memory write */
+	write_reg(par, 0x2c);
+}
+
+#define HFLIP 0x01
+#define VFLIP 0x02
+#define ROWxCOL 0x20
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 270:
+		write_reg(par, 0x36, ROWxCOL | HFLIP | VFLIP | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, VFLIP | (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, ROWxCOL | (par->bgr << 3));
+		break;
+	default:
+		write_reg(par, 0x36, HFLIP | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.init_sequence = default_init_sequence,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9481", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9481");
+MODULE_ALIAS("platform:ili9481");
+
+MODULE_DESCRIPTION("FB driver for the ILI9481 LCD Controller");
+MODULE_AUTHOR("Petr Olivka");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ili9486.c linux-rpi/drivers/staging/fbtft/fb_ili9486.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ili9486.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ili9486.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,121 @@
+/*
+ * FB driver for the ILI9486 LCD Controller
+ *
+ * Copyright (C) 2014 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9486"
+#define WIDTH		320
+#define HEIGHT		480
+
+
+/* this init sequence matches PiScreen */
+static int default_init_sequence[] = {
+	/* Interface Mode Control */
+	-1, 0xb0, 0x0,
+	/* Sleep OUT */
+	-1, 0x11,
+	-2, 250,
+	/* Interface Pixel Format */
+	-1, 0x3A, 0x55,
+	/* Power Control 3 */
+	-1, 0xC2, 0x44,
+	/* VCOM Control 1 */
+	-1, 0xC5, 0x00, 0x00, 0x00, 0x00,
+	/* PGAMCTRL(Positive Gamma Control) */
+	-1, 0xE0, 0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98,
+	          0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x00,
+	/* NGAMCTRL(Negative Gamma Control) */
+	-1, 0xE1, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+	          0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
+	/* Digital Gamma Control 1 */
+	-1, 0xE2, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+	          0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
+	/* Sleep OUT */
+	-1, 0x11,
+	/* Display ON */
+	-1, 0x29,
+	/* end marker */
+	-3
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, 0x80 | (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, 0x20 | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, 0x40 | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, 0xE0 | (par->bgr << 3));
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.init_sequence = default_init_sequence,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9486", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9486");
+MODULE_ALIAS("platform:ili9486");
+
+MODULE_DESCRIPTION("FB driver for the ILI9486 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_pcd8544.c linux-rpi/drivers/staging/fbtft/fb_pcd8544.c
--- linux-3.18.10/drivers/staging/fbtft/fb_pcd8544.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_pcd8544.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,177 @@
+/*
+ * FB driver for the PCD8544 LCD Controller
+ *
+ * The display is monochrome and the video memory is RGB565.
+ * Any pixel value except 0 turns the pixel on.
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME	       "fb_pcd8544"
+#define WIDTH          84
+#define HEIGHT         48
+#define TXBUFLEN       (84*6)
+#define DEFAULT_GAMMA  "40" /* gamma is used to control contrast in this driver */
+
+static unsigned tc;
+module_param(tc, uint, 0);
+MODULE_PARM_DESC(tc, "TC[1:0] Temperature coefficient: 0-3 (default: 0)");
+
+static unsigned bs = 4;
+module_param(bs, uint, 0);
+MODULE_PARM_DESC(bs, "BS[2:0] Bias voltage level: 0-7 (default: 4)");
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* Function set */
+	write_reg(par, 0x21); /* 5:1  1
+	                         2:0  PD - Powerdown control: chip is active
+							 1:0  V  - Entry mode: horizontal addressing
+							 0:1  H  - Extended instruction set control: extended
+						  */
+
+	/* H=1 Temperature control */
+	write_reg(par, 0x04 | (tc & 0x3)); /*
+	                         2:1  1
+	                         1:x  TC1 - Temperature Coefficient: 0x10
+							 0:x  TC0
+						  */
+
+	/* H=1 Bias system */
+	write_reg(par, 0x10 | (bs & 0x7)); /*
+	                         4:1  1
+	                         3:0  0
+							 2:x  BS2 - Bias System
+							 1:x  BS1
+							 0:x  BS0
+	                      */
+
+	/* Function set */
+	write_reg(par, 0x22); /* 5:1  1
+	                         2:0  PD - Powerdown control: chip is active
+							 1:1  V  - Entry mode: vertical addressing
+							 0:0  H  - Extended instruction set control: basic
+						  */
+
+	/* H=0 Display control */
+	write_reg(par, 0x08 | 4); /*
+	                         3:1  1
+	                         2:1  D  - DE: 10=normal mode
+							 1:0  0
+							 0:0  E
+						  */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* H=0 Set X address of RAM */
+	write_reg(par, 0x80); /* 7:1  1
+	                         6-0: X[6:0] - 0x00
+	                      */
+
+	/* H=0 Set Y address of RAM */
+	write_reg(par, 0x40); /* 7:0  0
+	                         6:1  1
+	                         2-0: Y[2:0] - 0x0
+	                      */
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	u8 *buf = par->txbuf.buf;
+	int x, y, i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	for (x = 0; x < 84; x++) {
+		for (y = 0; y < 6; y++) {
+			*buf = 0x00;
+			for (i = 0; i < 8; i++) {
+				*buf |= (vmem16[(y*8+i)*84+x] ? 1 : 0) << i;
+			}
+			buf++;
+		}
+	}
+
+	/* Write data */
+	gpio_set_value(par->gpio.dc, 1);
+	ret = par->fbtftops.write(par, par->txbuf.buf, 6*84);
+	if (ret < 0)
+		dev_err(par->info->device, "%s: write failed and returned: %d\n", __func__, ret);
+
+	return ret;
+}
+
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	curves[0] &= 0x7F;
+
+	write_reg(par, 0x23); /* turn on extended instruction set */
+	write_reg(par, 0x80 | curves[0]);
+	write_reg(par, 0x22); /* turn off extended instruction set */
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.txbuflen = TXBUFLEN,
+	.gamma_num = 1,
+	.gamma_len = 1,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.write_vmem = write_vmem,
+		.set_gamma = set_gamma,
+	},
+	.backlight = 1,
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "philips,pdc8544", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("spi:pdc8544");
+
+MODULE_DESCRIPTION("FB driver for the PCD8544 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ra8875.c linux-rpi/drivers/staging/fbtft/fb_ra8875.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ra8875.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ra8875.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,331 @@
+/******************************************************************************
+
+  ProjectName: FBTFT driver                       ***** *****
+	       for the RA8875 LCD Controller     *     *      ************
+						*   **   **   *           *
+  Copyright © by Pf@nne & NOTRO                *   *   *   *   *   ****	   *
+						*   *       *   *   *   *   *
+  Last modification by:                        *   *       *   *   ****    *
+  - Pf@nne (pf@nne-mail.de)                     *   *     *****           *
+						 *   *        *   *******
+						  *****      *   *
+  Date    : 10.06.2014                                      *   *
+  Version : V1.13                                          *****
+  Revison : 5
+
+*******************************************************************************
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include <linux/gpio.h>
+#include "fbtft.h"
+
+#define DRVNAME "fb_ra8875"
+
+static int write_spi(struct fbtft_par *par, void *buf, size_t len)
+{
+	struct spi_transfer t = {
+		.tx_buf = buf,
+		.len = len,
+		.speed_hz = 1000000,
+	};
+	struct spi_message m;
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	if (!par->spi) {
+		dev_err(par->info->device,
+			"%s: par->spi is unexpectedly NULL\n", __func__);
+		return -1;
+	}
+
+	spi_message_init(&m);
+	if (par->txbuf.dma && buf == par->txbuf.buf) {
+		t.tx_dma = par->txbuf.dma;
+		m.is_dma_mapped = 1;
+	}
+	spi_message_add_tail(&t, &m);
+	return spi_sync(par->spi, &m);
+}
+
+static int init_display(struct fbtft_par *par)
+{
+	gpio_set_value(par->gpio.dc, 1);
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+		"%s()\n", __func__);
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+		"display size %dx%d\n", par->info->var.xres, par->info->var.yres);
+
+	par->fbtftops.reset(par);
+
+	if ((par->info->var.xres == 320) && (par->info->var.yres == 240)) {
+		/* PLL clock frequency */
+		write_reg(par, 0x88 , 0x0A);
+		write_reg(par, 0x89 , 0x02);
+		mdelay(10);
+		/* color deep / MCU Interface */
+		write_reg(par, 0x10 , 0x0C);
+		/* pixel clock period  */
+		write_reg(par, 0x04 , 0x03);
+		mdelay(1);
+		/* horizontal settings */
+		write_reg(par, 0x14 , 0x27);
+		write_reg(par, 0x15 , 0x00);
+		write_reg(par, 0x16 , 0x05);
+		write_reg(par, 0x17 , 0x04);
+		write_reg(par, 0x18 , 0x03);
+		/* vertical settings */
+		write_reg(par, 0x19 , 0xEF);
+		write_reg(par, 0x1A , 0x00);
+		write_reg(par, 0x1B , 0x05);
+		write_reg(par, 0x1C , 0x00);
+		write_reg(par, 0x1D , 0x0E);
+		write_reg(par, 0x1E , 0x00);
+		write_reg(par, 0x1F , 0x02);
+	} else if ((par->info->var.xres == 480) && (par->info->var.yres == 272)) {
+		/* PLL clock frequency  */
+		write_reg(par, 0x88 , 0x0A);
+		write_reg(par, 0x89 , 0x02);
+		mdelay(10);
+		/* color deep / MCU Interface */
+		write_reg(par, 0x10 , 0x0C);
+		/* pixel clock period  */
+		write_reg(par, 0x04 , 0x82);
+		mdelay(1);
+		/* horizontal settings */
+		write_reg(par, 0x14 , 0x3B);
+		write_reg(par, 0x15 , 0x00);
+		write_reg(par, 0x16 , 0x01);
+		write_reg(par, 0x17 , 0x00);
+		write_reg(par, 0x18 , 0x05);
+		/* vertical settings */
+		write_reg(par, 0x19 , 0x0F);
+		write_reg(par, 0x1A , 0x01);
+		write_reg(par, 0x1B , 0x02);
+		write_reg(par, 0x1C , 0x00);
+		write_reg(par, 0x1D , 0x07);
+		write_reg(par, 0x1E , 0x00);
+		write_reg(par, 0x1F , 0x09);
+	} else if ((par->info->var.xres == 640) && (par->info->var.yres == 480)) {
+		/* PLL clock frequency */
+		write_reg(par, 0x88 , 0x0B);
+		write_reg(par, 0x89 , 0x02);
+		mdelay(10);
+		/* color deep / MCU Interface */
+		write_reg(par, 0x10 , 0x0C);
+		/* pixel clock period */
+		write_reg(par, 0x04 , 0x01);
+		mdelay(1);
+		/* horizontal settings */
+		write_reg(par, 0x14 , 0x4F);
+		write_reg(par, 0x15 , 0x05);
+		write_reg(par, 0x16 , 0x0F);
+		write_reg(par, 0x17 , 0x01);
+		write_reg(par, 0x18 , 0x00);
+		/* vertical settings */
+		write_reg(par, 0x19 , 0xDF);
+		write_reg(par, 0x1A , 0x01);
+		write_reg(par, 0x1B , 0x0A);
+		write_reg(par, 0x1C , 0x00);
+		write_reg(par, 0x1D , 0x0E);
+		write_reg(par, 0x1E , 0x00);
+		write_reg(par, 0x1F , 0x01);
+	} else if ((par->info->var.xres == 800) && (par->info->var.yres == 480)) {
+		/* PLL clock frequency */
+		write_reg(par, 0x88 , 0x0B);
+		write_reg(par, 0x89 , 0x02);
+		mdelay(10);
+		/* color deep / MCU Interface */
+		write_reg(par, 0x10 , 0x0C);
+		/* pixel clock period */
+		write_reg(par, 0x04 , 0x81);
+		mdelay(1);
+		/* horizontal settings */
+		write_reg(par, 0x14 , 0x63);
+		write_reg(par, 0x15 , 0x03);
+		write_reg(par, 0x16 , 0x03);
+		write_reg(par, 0x17 , 0x02);
+		write_reg(par, 0x18 , 0x00);
+		/* vertical settings */
+		write_reg(par, 0x19 , 0xDF);
+		write_reg(par, 0x1A , 0x01);
+		write_reg(par, 0x1B , 0x14);
+		write_reg(par, 0x1C , 0x00);
+		write_reg(par, 0x1D , 0x06);
+		write_reg(par, 0x1E , 0x00);
+		write_reg(par, 0x1F , 0x01);
+	} else {
+		dev_err(par->info->device, "display size is not supported!!");
+		return -1;
+	}
+
+	/* PWM clock */
+	write_reg(par, 0x8a , 0x81);
+	write_reg(par, 0x8b , 0xFF);
+	mdelay(10);
+
+	/* Display ON */
+	write_reg(par, 0x01 , 0x80);
+	mdelay(10);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Set_Active_Window */
+	write_reg(par, 0x30 , xs & 0x00FF);
+	write_reg(par, 0x31 , (xs & 0xFF00) >> 8);
+	write_reg(par, 0x32 , ys & 0x00FF);
+	write_reg(par, 0x33 , (ys & 0xFF00) >> 8);
+	write_reg(par, 0x34 , (xs+xe) & 0x00FF);
+	write_reg(par, 0x35 , ((xs+xe) & 0xFF00) >> 8);
+	write_reg(par, 0x36 , (ys+ye) & 0x00FF);
+	write_reg(par, 0x37 , ((ys+ye) & 0xFF00) >> 8);
+
+	/* Set_Memory_Write_Cursor */
+	write_reg(par, 0x46,  xs & 0xff);
+	write_reg(par, 0x47, (xs >> 8) & 0x03);
+	write_reg(par, 0x48,  ys & 0xff);
+	write_reg(par, 0x49, (ys >> 8) & 0x01);
+
+	write_reg(par, 0x02);
+}
+
+static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	u8 *buf = (u8 *)par->buf;
+
+	/* slow down spi-speed for writing registers */
+	par->fbtftops.write = write_spi;
+
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
+		va_start(args, len);
+		for (i = 0; i < len; i++)
+			buf[i] = (u8)va_arg(args, unsigned int);
+		va_end(args);
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, par->info->device,
+			u8, buf, len, "%s: ", __func__);
+	}
+
+	va_start(args, len);
+	*buf++ = 0x80;
+	*buf = (u8)va_arg(args, unsigned int);
+	ret = par->fbtftops.write(par, par->buf, 2);
+	if (ret < 0) {
+		va_end(args);
+		dev_err(par->info->device, "%s: write() failed and returned %dn",
+			__func__, ret);
+		return;
+	}
+	len--;
+
+	udelay(100);
+
+	if (len) {
+		buf = (u8 *)par->buf;
+		*buf++ = 0x00;
+		i = len;
+		while (i--)
+			*buf++ = (u8)va_arg(args, unsigned int);
+
+		ret = par->fbtftops.write(par, par->buf, len + 1);
+		if (ret < 0) {
+			va_end(args);
+			dev_err(par->info->device, "%s: write() failed and returned %dn",
+				__func__, ret);
+			return;
+		}
+	}
+	va_end(args);
+
+	/* restore user spi-speed */
+	par->fbtftops.write = fbtft_write_spi;
+	udelay(100);
+}
+
+static int write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16;
+	u16 *txbuf16 = (u16 *)par->txbuf.buf;
+	size_t remain;
+	size_t to_copy;
+	size_t tx_array_size;
+	int i;
+	int ret = 0;
+	size_t startbyte_size = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
+		__func__, offset, len);
+
+	remain = len / 2;
+	vmem16 = (u16 *)(par->info->screen_base + offset);
+	tx_array_size = par->txbuf.len / 2;
+		txbuf16 = (u16 *)(par->txbuf.buf + 1);
+		tx_array_size -= 2;
+		*(u8 *)(par->txbuf.buf) = 0x00;
+		startbyte_size = 1;
+
+	while (remain) {
+		to_copy = remain > tx_array_size ? tx_array_size : remain;
+		dev_dbg(par->info->device, "    to_copy=%zu, remain=%zu\n",
+			to_copy, remain - to_copy);
+
+		for (i = 0; i < to_copy; i++)
+			txbuf16[i] = cpu_to_be16(vmem16[i]);
+
+		vmem16 = vmem16 + to_copy;
+		ret = par->fbtftops.write(par, par->txbuf.buf,
+			startbyte_size + to_copy * 2);
+		if (ret < 0)
+			return ret;
+		remain -= to_copy;
+	}
+
+	return ret;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.write_register = write_reg8_bus8,
+		.write_vmem = write_vmem16_bus8,
+		.write = write_spi,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "raio,ra8875", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ra8875");
+MODULE_ALIAS("platform:ra8875");
+
+MODULE_DESCRIPTION("FB driver for the RA8875 LCD Controller");
+MODULE_AUTHOR("Pf@nne");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_s6d02a1.c linux-rpi/drivers/staging/fbtft/fb_s6d02a1.c
--- linux-3.18.10/drivers/staging/fbtft/fb_s6d02a1.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_s6d02a1.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,168 @@
+/*
+ * FB driver for the S6D02A1 LCD Controller
+ *
+ * Based on fb_st7735r.c by Noralf Tronnes
+ * Init code from UTFT library by Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fb_s6d02a1"
+
+static int default_init_sequence[] = {
+
+	-1, 0xf0, 0x5a, 0x5a,
+
+	-1, 0xfc, 0x5a, 0x5a,
+
+	-1, 0xfa, 0x02, 0x1f, 0x00, 0x10, 0x22, 0x30, 0x38, 0x3A, 0x3A, 0x3A, 0x3A, 0x3A, 0x3d, 0x02, 0x01,
+
+	-1, 0xfb, 0x21, 0x00, 0x02, 0x04, 0x07, 0x0a, 0x0b, 0x0c, 0x0c, 0x16, 0x1e, 0x30, 0x3f, 0x01, 0x02,
+
+	/* power setting sequence */
+	-1, 0xfd, 0x00, 0x00, 0x00, 0x17, 0x10, 0x00, 0x01, 0x01, 0x00, 0x1f, 0x1f,
+
+	-1, 0xf4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00,
+
+	-1, 0xf5, 0x00, 0x70, 0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6d, 0x66, 0x06,
+
+	-1, 0xf6, 0x02, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x02, 0x00, 0x06, 0x01, 0x00,
+
+	-1, 0xf2, 0x00, 0x01, 0x03, 0x08, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x04, 0x08, 0x08,
+
+	-1, 0xf8, 0x11,
+
+	-1, 0xf7, 0xc8, 0x20, 0x00, 0x00,
+
+	-1, 0xf3, 0x00, 0x00,
+
+	-1, 0x11,
+	-2, 50,
+
+	-1, 0xf3, 0x00, 0x01,
+	-2, 50,
+	-1, 0xf3, 0x00, 0x03,
+	-2, 50,
+	-1, 0xf3, 0x00, 0x07,
+	-2, 50,
+	-1, 0xf3, 0x00, 0x0f,
+	-2, 50,
+
+	-1, 0xf4, 0x00, 0x04, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00,
+	-2, 50,
+
+	-1, 0xf3, 0x00, 0x1f,
+	-2, 50,
+	-1, 0xf3, 0x00, 0x7f,
+	-2, 50,
+
+	-1, 0xf3, 0x00, 0xff,
+	-2, 50,
+
+	-1, 0xfd, 0x00, 0x00, 0x00, 0x17, 0x10, 0x00, 0x00, 0x01, 0x00, 0x16, 0x16,
+
+	-1, 0xf4, 0x00, 0x09, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00,
+
+	/* initializing sequence */
+
+	-1, 0x36, 0x08,
+
+	-1, 0x35, 0x00,
+
+	-1, 0x3a, 0x05,
+
+	/* gamma setting sequence */
+	-1, 0x26, 0x01,	/* preset gamma curves, possible values 0x01, 0x02, 0x04, 0x08 */
+
+	-2, 150,
+	-1, 0x29,
+	-1, 0x2c,
+	/* end marker */
+	-3
+
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+#define MY (1 << 7)
+#define MX (1 << 6)
+#define MV (1 << 5)
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* MADCTL - Memory data access control
+	     RGB/BGR:
+		1. Mode selection pin SRGB
+			RGB H/W pin for color filter setting: 0=RGB, 1=BGR
+		2. MADCTL RGB bit
+			RGB-BGR ORDER color filter panel: 0=RGB, 1=BGR */
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, MX | MY | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, MY | MV | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, MX | MV | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = 128,
+	.height = 160,
+	.init_sequence = default_init_sequence,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "samsung,s6d02a1", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:s6d02a1");
+MODULE_ALIAS("platform:s6d02a1");
+
+MODULE_DESCRIPTION("FB driver for the S6D02A1 LCD Controller");
+MODULE_AUTHOR("WOLFGANG BUENING");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_s6d1121.c linux-rpi/drivers/staging/fbtft/fb_s6d1121.c
--- linux-3.18.10/drivers/staging/fbtft/fb_s6d1121.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_s6d1121.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,208 @@
+/*
+ * FB driver for the S6D1121 LCD Controller
+ *
+ * Copyright (C) 2013 Roman Rolinsky
+ *
+ * Based on fb_ili9325.c by Noralf Tronnes
+ * Based on ili9325.c by Jeroen Domburg
+ * Init code from UTFT library by Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_s6d1121"
+#define WIDTH		240
+#define HEIGHT		320
+#define BPP		16
+#define FPS		20
+#define DEFAULT_GAMMA	"26 09 24 2C 1F 23 24 25 22 26 25 23 0D 00\n" \
+			"1C 1A 13 1D 0B 11 12 10 13 15 36 19 00 0D"
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	/* Initialization sequence from Lib_UTFT */
+
+	write_reg(par, 0x0011, 0x2004);
+	write_reg(par, 0x0013, 0xCC00);
+	write_reg(par, 0x0015, 0x2600);
+	write_reg(par, 0x0014, 0x252A);
+	write_reg(par, 0x0012, 0x0033);
+	write_reg(par, 0x0013, 0xCC04);
+	write_reg(par, 0x0013, 0xCC06);
+	write_reg(par, 0x0013, 0xCC4F);
+	write_reg(par, 0x0013, 0x674F);
+	write_reg(par, 0x0011, 0x2003);
+	write_reg(par, 0x0016, 0x0007);
+	write_reg(par, 0x0002, 0x0013);
+	write_reg(par, 0x0003, 0x0003);
+	write_reg(par, 0x0001, 0x0127);
+	write_reg(par, 0x0008, 0x0303);
+	write_reg(par, 0x000A, 0x000B);
+	write_reg(par, 0x000B, 0x0003);
+	write_reg(par, 0x000C, 0x0000);
+	write_reg(par, 0x0041, 0x0000);
+	write_reg(par, 0x0050, 0x0000);
+	write_reg(par, 0x0060, 0x0005);
+	write_reg(par, 0x0070, 0x000B);
+	write_reg(par, 0x0071, 0x0000);
+	write_reg(par, 0x0078, 0x0000);
+	write_reg(par, 0x007A, 0x0000);
+	write_reg(par, 0x0079, 0x0007);
+	write_reg(par, 0x0007, 0x0051);
+	write_reg(par, 0x0007, 0x0053);
+	write_reg(par, 0x0079, 0x0000);
+
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0020, xs);
+		write_reg(par, 0x0021, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0020, WIDTH - 1 - xs);
+		write_reg(par, 0x0021, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0020, WIDTH - 1 - ys);
+		write_reg(par, 0x0021, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0020, ys);
+		write_reg(par, 0x0021, HEIGHT - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	/* AM: GRAM update direction */
+	case 0:
+		write_reg(par, 0x03, 0x0003 | (par->bgr << 12));
+		break;
+	case 180:
+		write_reg(par, 0x03, 0x0000 | (par->bgr << 12));
+		break;
+	case 270:
+		write_reg(par, 0x03, 0x000A | (par->bgr << 12));
+		break;
+	case 90:
+		write_reg(par, 0x03, 0x0009 | (par->bgr << 12));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    PKP0 PKP1 PKP2 PKP3 PKP4 PKP5 PKP6 PKP7 PKP8 PKP9 PKP10 PKP11 VRP0 VRP1
+    PKN0 PKN1 PKN2 PKN3 PKN4 PKN5 PKN6 PKN7 PRN8 PRN9 PRN10 PRN11 VRN0 VRN1
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111,
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111,
+		0b11111, 0b11111,
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111,
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111,
+		0b11111, 0b11111 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < 2; i++)
+		for (j = 0; j < 14; j++)
+			CURVE(i, j) &= mask[i*par->gamma.num_values + j];
+
+	write_reg(par, 0x0030, CURVE(0, 1) << 8 | CURVE(0, 0));
+	write_reg(par, 0x0031, CURVE(0, 3) << 8 | CURVE(0, 2));
+	write_reg(par, 0x0032, CURVE(0, 5) << 8 | CURVE(0, 3));
+	write_reg(par, 0x0033, CURVE(0, 7) << 8 | CURVE(0, 6));
+	write_reg(par, 0x0034, CURVE(0, 9) << 8 | CURVE(0, 8));
+	write_reg(par, 0x0035, CURVE(0, 11) << 8 | CURVE(0, 10));
+
+	write_reg(par, 0x0036, CURVE(1, 1) << 8 | CURVE(1, 0));
+	write_reg(par, 0x0037, CURVE(1, 3) << 8 | CURVE(1, 2));
+	write_reg(par, 0x0038, CURVE(1, 5) << 8 | CURVE(1, 4));
+	write_reg(par, 0x0039, CURVE(1, 7) << 8 | CURVE(1, 6));
+	write_reg(par, 0x003A, CURVE(1, 9) << 8 | CURVE(1, 8));
+	write_reg(par, 0x003B, CURVE(1, 11) << 8 | CURVE(1, 10));
+
+	write_reg(par, 0x003C, CURVE(0, 13) << 8 | CURVE(0, 12));
+	write_reg(par, 0x003D, CURVE(1, 13) << 8 | CURVE(1, 12));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.bpp = BPP,
+	.fps = FPS,
+	.gamma_num = 2,
+	.gamma_len = 14,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "samsung,s6d1121", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:s6d1121");
+MODULE_ALIAS("platform:s6d1121");
+
+MODULE_DESCRIPTION("FB driver for the S6D1121 LCD Controller");
+MODULE_AUTHOR("Roman Rolinsky");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ssd1289.c linux-rpi/drivers/staging/fbtft/fb_ssd1289.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ssd1289.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ssd1289.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,206 @@
+/*
+ * FB driver for the SSD1289 LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * Init sequence taken from ITDB02_Graph16.cpp - (C)2010-2011 Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ssd1289"
+#define WIDTH		240
+#define HEIGHT		320
+#define DEFAULT_GAMMA	"02 03 2 5 7 7 4 2 4 2\n" \
+			"02 03 2 5 7 5 4 2 4 2"
+
+static unsigned reg11 = 0x6040;
+module_param(reg11, uint, 0);
+MODULE_PARM_DESC(reg11, "Register 11h value");
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	write_reg(par, 0x00, 0x0001);
+	write_reg(par, 0x03, 0xA8A4);
+	write_reg(par, 0x0C, 0x0000);
+	write_reg(par, 0x0D, 0x080C);
+	write_reg(par, 0x0E, 0x2B00);
+	write_reg(par, 0x1E, 0x00B7);
+	write_reg(par, 0x01,
+		(1 << 13) | (par->bgr << 11) | (1 << 9) | (HEIGHT - 1));
+	write_reg(par, 0x02, 0x0600);
+	write_reg(par, 0x10, 0x0000);
+	write_reg(par, 0x05, 0x0000);
+	write_reg(par, 0x06, 0x0000);
+	write_reg(par, 0x16, 0xEF1C);
+	write_reg(par, 0x17, 0x0003);
+	write_reg(par, 0x07, 0x0233);
+	write_reg(par, 0x0B, 0x0000);
+	write_reg(par, 0x0F, 0x0000);
+	write_reg(par, 0x41, 0x0000);
+	write_reg(par, 0x42, 0x0000);
+	write_reg(par, 0x48, 0x0000);
+	write_reg(par, 0x49, 0x013F);
+	write_reg(par, 0x4A, 0x0000);
+	write_reg(par, 0x4B, 0x0000);
+	write_reg(par, 0x44, 0xEF00);
+	write_reg(par, 0x45, 0x0000);
+	write_reg(par, 0x46, 0x013F);
+	write_reg(par, 0x23, 0x0000);
+	write_reg(par, 0x24, 0x0000);
+	write_reg(par, 0x25, 0x8000);
+	write_reg(par, 0x4f, 0x0000);
+	write_reg(par, 0x4e, 0x0000);
+	write_reg(par, 0x22);
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	switch (par->info->var.rotate) {
+	/* R4Eh - Set GDDRAM X address counter */
+	/* R4Fh - Set GDDRAM Y address counter */
+	case 0:
+		write_reg(par, 0x4e, xs);
+		write_reg(par, 0x4f, ys);
+		break;
+	case 180:
+		write_reg(par, 0x4e, par->info->var.xres - 1 - xs);
+		write_reg(par, 0x4f, par->info->var.yres - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x4e, par->info->var.yres - 1 - ys);
+		write_reg(par, 0x4f, xs);
+		break;
+	case 90:
+		write_reg(par, 0x4e, ys);
+		write_reg(par, 0x4f, par->info->var.xres - 1 - xs);
+		break;
+	}
+
+	/* R22h - RAM data write */
+	write_reg(par, 0x22);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (par->fbtftops.init_display != init_display) {
+		/* don't risk messing up register 11h */
+		fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+			"%s: skipping since custom init_display() is used\n",
+			__func__);
+		return 0;
+	}
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x11, reg11 | 0b110000);
+		break;
+	case 270:
+		write_reg(par, 0x11, reg11 | 0b101000);
+		break;
+	case 180:
+		write_reg(par, 0x11, reg11 | 0b000000);
+		break;
+	case 90:
+		write_reg(par, 0x11, reg11 | 0b011000);
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    VRP0 VRP1 PRP0 PRP1 PKP0 PKP1 PKP2 PKP3 PKP4 PKP5
+    VRN0 VRN1 PRN0 PRN1 PKN0 PKN1 PKN2 PKN3 PKN4 PKN5
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111,
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < 2; i++)
+		for (j = 0; j < 10; j++)
+			CURVE(i, j) &= mask[i*par->gamma.num_values + j];
+
+	write_reg(par, 0x0030, CURVE(0, 5) << 8 | CURVE(0, 4));
+	write_reg(par, 0x0031, CURVE(0, 7) << 8 | CURVE(0, 6));
+	write_reg(par, 0x0032, CURVE(0, 9) << 8 | CURVE(0, 8));
+	write_reg(par, 0x0033, CURVE(0, 3) << 8 | CURVE(0, 2));
+	write_reg(par, 0x0034, CURVE(1, 5) << 8 | CURVE(1, 4));
+	write_reg(par, 0x0035, CURVE(1, 7) << 8 | CURVE(1, 6));
+	write_reg(par, 0x0036, CURVE(1, 9) << 8 | CURVE(1, 8));
+	write_reg(par, 0x0037, CURVE(1, 3) << 8 | CURVE(1, 2));
+	write_reg(par, 0x003A, CURVE(0, 1) << 8 | CURVE(0, 0));
+	write_reg(par, 0x003B, CURVE(1, 1) << 8 | CURVE(1, 0));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = 2,
+	.gamma_len = 10,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1289", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ssd1289");
+MODULE_ALIAS("platform:ssd1289");
+
+MODULE_DESCRIPTION("FB driver for the SSD1289 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ssd1306.c linux-rpi/drivers/staging/fbtft/fb_ssd1306.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ssd1306.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ssd1306.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,229 @@
+/*
+ * FB driver for the SSD1306 OLED Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ssd1306"
+#define WIDTH		128
+#define HEIGHT		64
+
+
+/*
+  write_reg() caveat:
+
+     This doesn't work because D/C has to be LOW for both values:
+       write_reg(par, val1, val2);
+
+     Do it like this:
+       write_reg(par, val1);
+       write_reg(par, val2);
+*/
+
+/* Init sequence taken from the Adafruit SSD1306 Arduino library */
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gamma.curves[0] == 0) {
+		mutex_lock(&par->gamma.lock);
+		if (par->info->var.yres == 64)
+			par->gamma.curves[0] = 0xCF;
+		else
+			par->gamma.curves[0] = 0x8F;
+		mutex_unlock(&par->gamma.lock);
+	}
+
+	/* Set Display OFF */
+	write_reg(par, 0xAE);
+
+	/* Set Display Clock Divide Ratio/ Oscillator Frequency */
+	write_reg(par, 0xD5);
+	write_reg(par, 0x80);
+
+	/* Set Multiplex Ratio */
+	write_reg(par, 0xA8);
+	if (par->info->var.yres == 64)
+		write_reg(par, 0x3F);
+	else
+		write_reg(par, 0x1F);
+
+	/* Set Display Offset */
+	write_reg(par, 0xD3);
+	write_reg(par, 0x0);
+
+	/* Set Display Start Line */
+	write_reg(par, 0x40 | 0x0);
+
+	/* Charge Pump Setting */
+	write_reg(par, 0x8D);
+	/* A[2] = 1b, Enable charge pump during display on */
+	write_reg(par, 0x14);
+
+	/* Set Memory Addressing Mode */
+	write_reg(par, 0x20);
+	/* Vertical addressing mode  */
+	write_reg(par, 0x01);
+
+	/*Set Segment Re-map */
+	/* column address 127 is mapped to SEG0 */
+	write_reg(par, 0xA0 | 0x1);
+
+	/* Set COM Output Scan Direction */
+	/* remapped mode. Scan from COM[N-1] to COM0 */
+	write_reg(par, 0xC8);
+
+	/* Set COM Pins Hardware Configuration */
+	write_reg(par, 0xDA);
+	if (par->info->var.yres == 64)
+		/* A[4]=1b, Alternative COM pin configuration */
+		write_reg(par, 0x12);
+	else
+		/* A[4]=0b, Sequential COM pin configuration */
+		write_reg(par, 0x02);
+
+	/* Set Pre-charge Period */
+	write_reg(par, 0xD9);
+	write_reg(par, 0xF1);
+
+	/* Set VCOMH Deselect Level */
+	write_reg(par, 0xDB);
+	/* according to the datasheet, this value is out of bounds */
+	write_reg(par, 0x40);
+
+	/* Entire Display ON */
+	/* Resume to RAM content display. Output follows RAM content */
+	write_reg(par, 0xA4);
+
+	/* Set Normal Display
+	   0 in RAM: OFF in display panel
+	   1 in RAM: ON in display panel */
+	write_reg(par, 0xA6);
+
+	/* Set Display ON */
+	write_reg(par, 0xAF);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Set Lower Column Start Address for Page Addressing Mode */
+	write_reg(par, 0x00 | 0x0);
+	/* Set Higher Column Start Address for Page Addressing Mode */
+	write_reg(par, 0x10 | 0x0);
+	/* Set Display Start Line */
+	write_reg(par, 0x40 | 0x0);
+}
+
+static int blank(struct fbtft_par *par, bool on)
+{
+	fbtft_par_dbg(DEBUG_BLANK, par, "%s(blank=%s)\n",
+		__func__, on ? "true" : "false");
+
+	if (on)
+		write_reg(par, 0xAE);
+	else
+		write_reg(par, 0xAF);
+	return 0;
+}
+
+/* Gamma is used to control Contrast */
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	curves[0] &= 0xFF;
+
+	/* Set Contrast Control for BANK0 */
+	write_reg(par, 0x81);
+	write_reg(par, curves[0]);
+
+	return 0;
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	u8 *buf = par->txbuf.buf;
+	int x, y, i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	for (x = 0; x < par->info->var.xres; x++) {
+		for (y = 0; y < par->info->var.yres/8; y++) {
+			*buf = 0x00;
+			for (i = 0; i < 8; i++)
+				*buf |= (vmem16[(y*8+i)*par->info->var.xres+x] ? 1 : 0) << i;
+			buf++;
+		}
+	}
+
+	/* Write data */
+	gpio_set_value(par->gpio.dc, 1);
+	ret = par->fbtftops.write(par, par->txbuf.buf,
+				par->info->var.xres*par->info->var.yres/8);
+	if (ret < 0)
+		dev_err(par->info->device,
+			"%s: write failed and returned: %d\n", __func__, ret);
+
+	return ret;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = 1,
+	.gamma_len = 1,
+	.gamma = "00",
+	.fbtftops = {
+		.write_vmem = write_vmem,
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.blank = blank,
+		.set_gamma = set_gamma,
+	},
+};
+
+
+FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1306", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ssd1306");
+MODULE_ALIAS("platform:ssd1306");
+
+MODULE_DESCRIPTION("SSD1306 OLED Driver");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ssd1331.c linux-rpi/drivers/staging/fbtft/fb_ssd1331.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ssd1331.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ssd1331.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,205 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ssd1331"
+#define WIDTH		96
+#define HEIGHT		64
+#define GAMMA_NUM	1
+#define GAMMA_LEN	63
+#define DEFAULT_GAMMA	"0 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2" \
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	write_reg(par, 0xae); /* Display Off */
+	write_reg(par, 0xa0, 0x70 | (par->bgr << 2)); /* Set Colour Depth */
+	write_reg(par, 0x72); // RGB colour
+	write_reg(par, 0xa1, 0x00); /* Set Display Start Line */
+	write_reg(par, 0xa2, 0x00); /* Set Display Offset */
+	write_reg(par, 0xa4); /* NORMALDISPLAY */
+	write_reg(par, 0xa8, 0x3f); // Set multiplex
+	write_reg(par, 0xad, 0x8e); // Set master
+	// write_reg(par, 0xb0, 0x0b); // Set power mode
+	write_reg(par, 0xb1, 0x31); // Precharge
+	write_reg(par, 0xb3, 0xf0); // Clock div
+	write_reg(par, 0x8a, 0x64); // Precharge A
+	write_reg(par, 0x8b, 0x78); // Precharge B
+	write_reg(par, 0x8c, 0x64); // Precharge C
+	write_reg(par, 0xbb, 0x3a); // Precharge level
+	write_reg(par, 0xbe, 0x3e); // vcomh
+	write_reg(par, 0x87, 0x06); // Master current
+	write_reg(par, 0x81, 0x91); // Contrast A
+	write_reg(par, 0x82, 0x50); // Contrast B
+	write_reg(par, 0x83, 0x7d); // Contrast C
+	write_reg(par, 0xaf); /* Set Sleep Mode Display On */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, 0x15, xs, xe);
+	write_reg(par, 0x75, ys, ye);
+}
+
+static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	u8 *buf = (u8 *)par->buf;
+
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
+		va_start(args, len);
+		for (i = 0; i < len; i++) {
+			buf[i] = (u8)va_arg(args, unsigned int);
+		}
+		va_end(args);
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, par->info->device, u8, buf, len, "%s: ", __func__);
+	}
+
+	va_start(args, len);
+
+	*buf = (u8)va_arg(args, unsigned int);
+	if (par->gpio.dc != -1)
+		gpio_set_value(par->gpio.dc, 0);
+	ret = par->fbtftops.write(par, par->buf, sizeof(u8));
+	if (ret < 0) {
+		va_end(args);
+		dev_err(par->info->device, "%s: write() failed and returned %d\n", __func__, ret);
+		return;
+	}
+	len--;
+
+	if (len) {
+		i = len;
+		while (i--) {
+			*buf++ = (u8)va_arg(args, unsigned int);
+		}
+		ret = par->fbtftops.write(par, par->buf, len * (sizeof(u8)));
+		if (ret < 0) {
+			va_end(args);
+			dev_err(par->info->device, "%s: write() failed and returned %d\n", __func__, ret);
+			return;
+		}
+	}
+	if (par->gpio.dc != -1)
+		gpio_set_value(par->gpio.dc, 1);
+	va_end(args);
+}
+
+/*
+	Grayscale Lookup Table
+	GS1 - GS63
+	The driver Gamma curve contains the relative values between the entries
+	in the Lookup table.
+
+	From datasheet:
+	8.8 Gray Scale Decoder
+
+		there are total 180 Gamma Settings (Setting 0 to Setting 180)
+		available for the Gray Scale table.
+
+		The gray scale is defined in incremental way, with reference
+		to the length of previous table entry:
+			Setting of GS1 has to be >= 0
+			Setting of GS2 has to be > Setting of GS1 +1
+			Setting of GS3 has to be > Setting of GS2 +1
+			:
+			Setting of GS63 has to be > Setting of GS62 +1
+
+
+*/
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long tmp[GAMMA_NUM * GAMMA_LEN];
+	int i, acc = 0;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	for (i = 0; i < 63; i++) {
+		if (i > 0 && curves[i] < 2) {
+			dev_err(par->info->device,
+				"Illegal value in Grayscale Lookup Table at index %d. " \
+				"Must be greater than 1\n", i);
+			return -EINVAL;
+		}
+		acc += curves[i];
+		tmp[i] = acc;
+		if (acc > 180) {
+			dev_err(par->info->device,
+				"Illegal value(s) in Grayscale Lookup Table. " \
+				"At index=%d, the accumulated value has exceeded 180\n", i);
+			return -EINVAL;
+		}
+	}
+
+	write_reg(par, 0xB8,
+	tmp[0], tmp[1], tmp[2], tmp[3], tmp[4], tmp[5], tmp[6], tmp[7],
+	tmp[8], tmp[9], tmp[10], tmp[11], tmp[12], tmp[13], tmp[14], tmp[15],
+	tmp[16], tmp[17], tmp[18], tmp[19], tmp[20], tmp[21], tmp[22], tmp[23],
+	tmp[24], tmp[25], tmp[26], tmp[27], tmp[28], tmp[29], tmp[30], tmp[31],
+	tmp[32], tmp[33], tmp[34], tmp[35], tmp[36], tmp[37], tmp[38], tmp[39],
+	tmp[40], tmp[41], tmp[42], tmp[43], tmp[44], tmp[45], tmp[46], tmp[47],
+	tmp[48], tmp[49], tmp[50], tmp[51], tmp[52], tmp[53], tmp[54], tmp[55],
+	tmp[56], tmp[57], tmp[58], tmp[59], tmp[60], tmp[61], tmp[62]);
+
+	return 0;
+}
+
+static int blank(struct fbtft_par *par, bool on)
+{
+	fbtft_par_dbg(DEBUG_BLANK, par, "%s(blank=%s)\n",
+		__func__, on ? "true" : "false");
+	if (on)
+		write_reg(par, 0xAE);
+	else
+		write_reg(par, 0xAF);
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = GAMMA_NUM,
+	.gamma_len = GAMMA_LEN,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.write_register = write_reg8_bus8,
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_gamma = set_gamma,
+		.blank = blank,
+	},
+};
+
+FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1331", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ssd1331");
+MODULE_ALIAS("platform:ssd1331");
+
+MODULE_DESCRIPTION("SSD1331 OLED Driver");
+MODULE_AUTHOR("Alec Smecher (adapted from SSD1351 by James Davies)");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_ssd1351.c linux-rpi/drivers/staging/fbtft/fb_ssd1351.c
--- linux-3.18.10/drivers/staging/fbtft/fb_ssd1351.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_ssd1351.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,258 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ssd1351"
+#define WIDTH		128
+#define HEIGHT		128
+#define GAMMA_NUM	1
+#define GAMMA_LEN	63
+#define DEFAULT_GAMMA	"0 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2" \
+
+static void register_onboard_backlight(struct fbtft_par *par);
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (par->pdata
+		&& par->pdata->display.backlight == FBTFT_ONBOARD_BACKLIGHT) {
+		/* module uses onboard GPIO for panel power */
+		par->fbtftops.register_backlight = register_onboard_backlight;
+	}
+
+	par->fbtftops.reset(par);
+
+	write_reg(par, 0xfd, 0x12); /* Command Lock */
+	write_reg(par, 0xfd, 0xb1); /* Command Lock */
+	write_reg(par, 0xae); /* Display Off */
+	write_reg(par, 0xb3, 0xf1); /* Front Clock Div */
+	write_reg(par, 0xca, 0x7f); /* Set Mux Ratio */
+	write_reg(par, 0x15, 0x00, 0x7f); /* Set Column Address */
+	write_reg(par, 0x75, 0x00, 0x7f); /* Set Row Address */
+	write_reg(par, 0xa1, 0x00); /* Set Display Start Line */
+	write_reg(par, 0xa2, 0x00); /* Set Display Offset */
+	write_reg(par, 0xb5, 0x00); /* Set GPIO */
+	write_reg(par, 0xab, 0x01); /* Set Function Selection */
+	write_reg(par, 0xb1, 0x32); /* Set Phase Length */
+	write_reg(par, 0xb4, 0xa0, 0xb5, 0x55); /* Set Segment Low Voltage */
+	write_reg(par, 0xbb, 0x17); /* Set Precharge Voltage */
+	write_reg(par, 0xbe, 0x05); /* Set VComH Voltage */
+	write_reg(par, 0xc1, 0xc8, 0x80, 0xc8); /* Set Contrast */
+	write_reg(par, 0xc7, 0x0f); /* Set Master Contrast */
+	write_reg(par, 0xb6, 0x01); /* Set Second Precharge Period */
+	write_reg(par, 0xa6); /* Set Display Mode Reset */
+	write_reg(par, 0xaf); /* Set Sleep Mode Display On */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, 0x15, xs, xe);
+	write_reg(par, 0x75, ys, ye);
+	write_reg(par, 0x5c);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	unsigned remap;
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (par->fbtftops.init_display != init_display) {
+		/* don't risk messing up register A0h */
+		fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+			"%s: skipping since custom init_display() is used\n",
+			__func__);
+		return 0;
+	}
+
+	remap = 0x60 | (par->bgr << 2); /* Set Colour Depth */
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0xA0, remap | 0b00 | 1<<4);
+		break;
+	case 270:
+		write_reg(par, 0xA0, remap | 0b11 | 1<<4);
+		break;
+	case 180:
+		write_reg(par, 0xA0, remap | 0b10);
+		break;
+	case 90:
+		write_reg(par, 0xA0, remap | 0b01);
+		break;
+	}
+
+	return 0;
+}
+
+/*
+	Grayscale Lookup Table
+	GS1 - GS63
+	The driver Gamma curve contains the relative values between the entries
+	in the Lookup table.
+
+	From datasheet:
+	8.8 Gray Scale Decoder
+
+		there are total 180 Gamma Settings (Setting 0 to Setting 180)
+		available for the Gray Scale table.
+
+		The gray scale is defined in incremental way, with reference
+		to the length of previous table entry:
+			Setting of GS1 has to be >= 0
+			Setting of GS2 has to be > Setting of GS1 +1
+			Setting of GS3 has to be > Setting of GS2 +1
+			:
+			Setting of GS63 has to be > Setting of GS62 +1
+
+
+*/
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long tmp[GAMMA_NUM * GAMMA_LEN];
+	int i, acc = 0;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	for (i = 0; i < 63; i++) {
+		if (i > 0 && curves[i] < 2) {
+			dev_err(par->info->device,
+				"Illegal value in Grayscale Lookup Table at index %d. " \
+				"Must be greater than 1\n", i);
+			return -EINVAL;
+		}
+		acc += curves[i];
+		tmp[i] = acc;
+		if (acc > 180) {
+			dev_err(par->info->device,
+				"Illegal value(s) in Grayscale Lookup Table. " \
+				"At index=%d, the accumulated value has exceeded 180\n", i);
+			return -EINVAL;
+		}
+	}
+
+	write_reg(par, 0xB8,
+	tmp[0], tmp[1], tmp[2], tmp[3], tmp[4], tmp[5], tmp[6], tmp[7],
+	tmp[8], tmp[9], tmp[10], tmp[11], tmp[12], tmp[13], tmp[14], tmp[15],
+	tmp[16], tmp[17], tmp[18], tmp[19], tmp[20], tmp[21], tmp[22], tmp[23],
+	tmp[24], tmp[25], tmp[26], tmp[27], tmp[28], tmp[29], tmp[30], tmp[31],
+	tmp[32], tmp[33], tmp[34], tmp[35], tmp[36], tmp[37], tmp[38], tmp[39],
+	tmp[40], tmp[41], tmp[42], tmp[43], tmp[44], tmp[45], tmp[46], tmp[47],
+	tmp[48], tmp[49], tmp[50], tmp[51], tmp[52], tmp[53], tmp[54], tmp[55],
+	tmp[56], tmp[57], tmp[58], tmp[59], tmp[60], tmp[61], tmp[62]);
+
+	return 0;
+}
+
+static int blank(struct fbtft_par *par, bool on)
+{
+	fbtft_par_dbg(DEBUG_BLANK, par, "%s(blank=%s)\n",
+		__func__, on ? "true" : "false");
+	if (on)
+		write_reg(par, 0xAE);
+	else
+		write_reg(par, 0xAF);
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = GAMMA_NUM,
+	.gamma_len = GAMMA_LEN,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+		.blank = blank,
+	},
+};
+
+#ifdef CONFIG_FB_BACKLIGHT
+static int update_onboard_backlight(struct backlight_device *bd)
+{
+	struct fbtft_par *par = bl_get_data(bd);
+	bool on;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par,
+		"%s: power=%d, fb_blank=%d\n",
+		__func__, bd->props.power, bd->props.fb_blank);
+
+	on = (bd->props.power == FB_BLANK_UNBLANK)
+		&& (bd->props.fb_blank == FB_BLANK_UNBLANK);
+	/* Onboard backlight connected to GPIO0 on SSD1351, GPIO1 unused */
+	write_reg(par, 0xB5, on ? 0x03 : 0x02);
+
+	return 0;
+}
+
+static void register_onboard_backlight(struct fbtft_par *par)
+{
+	struct backlight_device *bd;
+	struct backlight_properties bl_props = { 0, };
+	struct backlight_ops *bl_ops;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s()\n", __func__);
+
+	bl_ops = devm_kzalloc(par->info->device, sizeof(struct backlight_ops),
+				GFP_KERNEL);
+	if (!bl_ops) {
+		dev_err(par->info->device,
+			"%s: could not allocate memory for backlight operations.\n",
+			__func__);
+		return;
+	}
+
+	bl_ops->update_status = update_onboard_backlight;
+	bl_props.type = BACKLIGHT_RAW;
+	bl_props.power = FB_BLANK_POWERDOWN;
+
+	bd = backlight_device_register(dev_driver_string(par->info->device),
+				par->info->device, par, bl_ops, &bl_props);
+	if (IS_ERR(bd)) {
+		dev_err(par->info->device,
+			"cannot register backlight device (%ld)\n",
+			PTR_ERR(bd));
+		return;
+	}
+	par->info->bl_dev = bd;
+
+	if (!par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
+}
+#else
+static void register_onboard_backlight(struct fbtft_par *par) { };
+#endif
+
+
+FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1351", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ssd1351");
+MODULE_ALIAS("platform:ssd1351");
+
+MODULE_DESCRIPTION("SSD1351 OLED Driver");
+MODULE_AUTHOR("James Davies");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_st7735r.c linux-rpi/drivers/staging/fbtft/fb_st7735r.c
--- linux-3.18.10/drivers/staging/fbtft/fb_st7735r.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_st7735r.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,195 @@
+/*
+ * FB driver for the ST7735R LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fb_st7735r"
+#define DEFAULT_GAMMA "0F 1A 0F 18 2F 28 20 22 1F 1B 23 37 00 07 02 10\n" \
+                      "0F 1B 0F 17 33 2C 29 2E 30 30 39 3F 00 07 03 10"
+
+
+static int default_init_sequence[] = {
+	/* SWRESET - Software reset */
+	-1, 0x01,
+	-2, 150,                               /* delay */
+
+	/* SLPOUT - Sleep out & booster on */
+	-1, 0x11,
+	-2, 500,                               /* delay */
+
+	/* FRMCTR1 - frame rate control: normal mode
+	     frame rate = fosc / (1 x 2 + 40) * (LINE + 2C + 2D) */
+	-1, 0xB1, 0x01, 0x2C, 0x2D,
+
+	/* FRMCTR2 - frame rate control: idle mode
+	     frame rate = fosc / (1 x 2 + 40) * (LINE + 2C + 2D) */
+	-1, 0xB2, 0x01, 0x2C, 0x2D,
+
+	/* FRMCTR3 - frame rate control - partial mode
+	     dot inversion mode, line inversion mode */
+	-1, 0xB3, 0x01, 0x2C, 0x2D, 0x01, 0x2C, 0x2D,
+
+	/* INVCTR - display inversion control
+	     no inversion */
+	-1, 0xB4, 0x07,
+
+	/* PWCTR1 - Power Control
+	     -4.6V, AUTO mode */
+	-1, 0xC0, 0xA2, 0x02, 0x84,
+
+	/* PWCTR2 - Power Control
+	     VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD */
+	-1, 0xC1, 0xC5,
+
+	/* PWCTR3 - Power Control
+	     Opamp current small, Boost frequency */
+	-1, 0xC2, 0x0A, 0x00,
+
+	/* PWCTR4 - Power Control
+	     BCLK/2, Opamp current small & Medium low */
+	-1, 0xC3,0x8A,0x2A,
+
+	/* PWCTR5 - Power Control */
+	-1, 0xC4, 0x8A, 0xEE,
+
+	/* VMCTR1 - Power Control */
+	-1, 0xC5, 0x0E,
+
+	/* INVOFF - Display inversion off */
+	-1, 0x20,
+
+	/* COLMOD - Interface pixel format */
+	-1, 0x3A, 0x05,
+
+	/* DISPON - Display On */
+	-1, 0x29,
+	-2, 100,                               /* delay */
+
+	/* NORON - Partial off (Normal) */
+	-1, 0x13,
+	-2, 10,                               /* delay */
+
+	/* end marker */
+	-3
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+#define MY (1 << 7)
+#define MX (1 << 6)
+#define MV (1 << 5)
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* MADCTL - Memory data access control
+	     RGB/BGR:
+	     1. Mode selection pin SRGB
+	        RGB H/W pin for color filter setting: 0=RGB, 1=BGR
+	     2. MADCTL RGB bit
+	        RGB-BGR ORDER color filter panel: 0=RGB, 1=BGR */
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, MX | MY | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, MY | MV | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, MX | MV | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    VRF0P VOS0P PK0P PK1P PK2P PK3P PK4P PK5P PK6P PK7P PK8P PK9P SELV0P SELV1P SELV62P SELV63P
+    VRF0N VOS0N PK0N PK1N PK2N PK3N PK4N PK5N PK6N PK7N PK8N PK9N SELV0N SELV1N SELV62N SELV63N
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	int i,j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < par->gamma.num_curves; i++)
+		for (j = 0; j < par->gamma.num_values; j++)
+			CURVE(i,j) &= 0b111111;
+
+	for (i = 0; i < par->gamma.num_curves; i++)
+		write_reg(par, 0xE0 + i,
+			CURVE(i, 0), CURVE(i, 1), CURVE(i, 2), CURVE(i, 3),
+			CURVE(i, 4), CURVE(i, 5), CURVE(i, 6), CURVE(i, 7),
+			CURVE(i, 8), CURVE(i, 9), CURVE(i, 10), CURVE(i, 11),
+			CURVE(i, 12), CURVE(i, 13), CURVE(i, 14), CURVE(i,15));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = 128,
+	.height = 160,
+	.init_sequence = default_init_sequence,
+	.gamma_num = 2,
+	.gamma_len = 16,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "sitronix,st7735r", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:st7735r");
+MODULE_ALIAS("platform:st7735r");
+
+MODULE_DESCRIPTION("FB driver for the ST7735R LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fbtft-bus.c linux-rpi/drivers/staging/fbtft/fbtft-bus.c
--- linux-3.18.10/drivers/staging/fbtft/fbtft-bus.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fbtft-bus.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,256 @@
+#include <linux/export.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include "fbtft.h"
+
+
+
+
+/*****************************************************************************
+ *
+ *   void (*write_reg)(struct fbtft_par *par, int len, ...);
+ *
+ *****************************************************************************/
+
+#define define_fbtft_write_reg(func, type, modifier)                          \
+void func(struct fbtft_par *par, int len, ...)                                \
+{                                                                             \
+	va_list args;                                                         \
+	int i, ret;                                                           \
+	int offset = 0;                                                       \
+	type *buf = (type *)par->buf;                                         \
+									      \
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {                    \
+		va_start(args, len);                                          \
+		for (i = 0; i < len; i++) {                                   \
+			buf[i] = (type)va_arg(args, unsigned int);            \
+		}                                                             \
+		va_end(args);                                                 \
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, par->info->device, type, buf, len, "%s: ", __func__);   \
+	}                                                                     \
+									      \
+	va_start(args, len);                                                  \
+									      \
+	if (par->startbyte) {                                                 \
+		*(u8 *)par->buf = par->startbyte;                             \
+		buf = (type *)(par->buf + 1);                                 \
+		offset = 1;                                                   \
+	}                                                                     \
+									      \
+	*buf = modifier((type)va_arg(args, unsigned int));                    \
+	if (par->gpio.dc != -1)                                               \
+		gpio_set_value(par->gpio.dc, 0);                              \
+	ret = par->fbtftops.write(par, par->buf, sizeof(type)+offset);        \
+	if (ret < 0) {                                                        \
+		va_end(args);                                                 \
+		dev_err(par->info->device, "%s: write() failed and returned %d\n", __func__, ret); \
+		return;                                                       \
+	}                                                                     \
+	len--;                                                                \
+									      \
+	if (par->startbyte)                                                   \
+		*(u8 *)par->buf = par->startbyte | 0x2;                       \
+									      \
+	if (len) {                                                            \
+		i = len;                                                      \
+		while (i--) {                                                 \
+			*buf++ = modifier((type)va_arg(args, unsigned int));  \
+		}                                                             \
+		if (par->gpio.dc != -1)                                       \
+			gpio_set_value(par->gpio.dc, 1);                      \
+		ret = par->fbtftops.write(par, par->buf, len * (sizeof(type)+offset)); \
+		if (ret < 0) {                                                \
+			va_end(args);                                         \
+			dev_err(par->info->device, "%s: write() failed and returned %d\n", __func__, ret); \
+			return;                                               \
+		}                                                             \
+	}                                                                     \
+	va_end(args);                                                         \
+}                                                                             \
+EXPORT_SYMBOL(func);
+
+define_fbtft_write_reg(fbtft_write_reg8_bus8, u8, )
+define_fbtft_write_reg(fbtft_write_reg16_bus8, u16, cpu_to_be16)
+define_fbtft_write_reg(fbtft_write_reg16_bus16, u16, )
+
+void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	int pad = 0;
+	u16 *buf = (u16 *)par->buf;
+
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
+		va_start(args, len);
+		for (i = 0; i < len; i++)
+			*(((u8 *)buf) + i) = (u8)va_arg(args, unsigned int);
+		va_end(args);
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,
+			par->info->device, u8, buf, len, "%s: ", __func__);
+	}
+	if (len <= 0)
+		return;
+
+	if (par->spi && (par->spi->bits_per_word == 8)) {
+		/* we're emulating 9-bit, pad start of buffer with no-ops
+		   (assuming here that zero is a no-op) */
+		pad = (len % 4) ? 4 - (len % 4) : 0;
+		for (i = 0; i < pad; i++)
+			*buf++ = 0x000;
+	}
+
+	va_start(args, len);
+	*buf++ = (u8)va_arg(args, unsigned int);
+	i = len - 1;
+	while (i--) {
+		*buf = (u8)va_arg(args, unsigned int);
+		*buf++ |= 0x100; /* dc=1 */
+	}
+	va_end(args);
+	ret = par->fbtftops.write(par, par->buf, (len + pad) * sizeof(u16));
+	if (ret < 0) {
+		dev_err(par->info->device,
+			"%s: write() failed and returned %d\n", __func__, ret);
+		return;
+	}
+}
+EXPORT_SYMBOL(fbtft_write_reg8_bus9);
+
+
+
+
+/*****************************************************************************
+ *
+ *   int (*write_vmem)(struct fbtft_par *par);
+ *
+ *****************************************************************************/
+
+/* 16 bit pixel over 8-bit databus */
+int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16;
+	u16 *txbuf16 = (u16 *)par->txbuf.buf;
+	size_t remain;
+	size_t to_copy;
+	size_t tx_array_size;
+	int i;
+	int ret = 0;
+	size_t startbyte_size = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
+		__func__, offset, len);
+
+	remain = len / 2;
+	vmem16 = (u16 *)(par->info->screen_base + offset);
+
+	if (par->gpio.dc != -1)
+		gpio_set_value(par->gpio.dc, 1);
+
+	/* non buffered write */
+	if (!par->txbuf.buf)
+		return par->fbtftops.write(par, vmem16, len);
+
+	/* buffered write */
+	tx_array_size = par->txbuf.len / 2;
+
+	if (par->startbyte) {
+		txbuf16 = (u16 *)(par->txbuf.buf + 1);
+		tx_array_size -= 2;
+		*(u8 *)(par->txbuf.buf) = par->startbyte | 0x2;
+		startbyte_size = 1;
+	}
+
+	while (remain) {
+		to_copy = remain > tx_array_size ? tx_array_size : remain;
+		dev_dbg(par->info->device, "    to_copy=%zu, remain=%zu\n",
+						to_copy, remain - to_copy);
+
+		for (i = 0; i < to_copy; i++)
+			txbuf16[i] = cpu_to_be16(vmem16[i]);
+
+		vmem16 = vmem16 + to_copy;
+		ret = par->fbtftops.write(par, par->txbuf.buf,
+						startbyte_size + to_copy * 2);
+		if (ret < 0)
+			return ret;
+		remain -= to_copy;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_write_vmem16_bus8);
+
+/* 16 bit pixel over 9-bit SPI bus: dc + high byte, dc + low byte */
+int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u8 *vmem8;
+	u16 *txbuf16 = par->txbuf.buf;
+	size_t remain;
+	size_t to_copy;
+	size_t tx_array_size;
+	int i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
+		__func__, offset, len);
+
+	if (!par->txbuf.buf) {
+		dev_err(par->info->device, "%s: txbuf.buf is NULL\n", __func__);
+		return -1;
+	}
+
+	remain = len;
+	vmem8 = par->info->screen_base + offset;
+
+	tx_array_size = par->txbuf.len / 2;
+
+	while (remain) {
+		to_copy = remain > tx_array_size ? tx_array_size : remain;
+		dev_dbg(par->info->device, "    to_copy=%zu, remain=%zu\n",
+						to_copy, remain - to_copy);
+
+#ifdef __LITTLE_ENDIAN
+		for (i = 0; i < to_copy; i += 2) {
+			txbuf16[i]   = 0x0100 | vmem8[i+1];
+			txbuf16[i+1] = 0x0100 | vmem8[i];
+		}
+#else
+		for (i = 0; i < to_copy; i++)
+			txbuf16[i]   = 0x0100 | vmem8[i];
+#endif
+		vmem8 = vmem8 + to_copy;
+		ret = par->fbtftops.write(par, par->txbuf.buf, to_copy*2);
+		if (ret < 0)
+			return ret;
+		remain -= to_copy;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_write_vmem16_bus9);
+
+int fbtft_write_vmem8_bus8(struct fbtft_par *par, size_t offset, size_t len)
+{
+	dev_err(par->info->device, "%s: function not implemented\n", __func__);
+	return -1;
+}
+EXPORT_SYMBOL(fbtft_write_vmem8_bus8);
+
+/* 16 bit pixel over 16-bit databus */
+int fbtft_write_vmem16_bus16(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
+		__func__, offset, len);
+
+	vmem16 = (u16 *)(par->info->screen_base + offset);
+
+	if (par->gpio.dc != -1)
+		gpio_set_value(par->gpio.dc, 1);
+
+	/* no need for buffered write with 16-bit bus */
+	return par->fbtftops.write(par, vmem16, len);
+}
+EXPORT_SYMBOL(fbtft_write_vmem16_bus16);
diff -Nur linux-3.18.10/drivers/staging/fbtft/fbtft-core.c linux-rpi/drivers/staging/fbtft/fbtft-core.c
--- linux-3.18.10/drivers/staging/fbtft/fbtft-core.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fbtft-core.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,1521 @@
+/*
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This driver is inspired by:
+ *   st7735fb.c, Copyright (C) 2011, Matt Porter
+ *   broadsheetfb.c, Copyright (C) 2008, Jaya Kumar
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+#include <linux/uaccess.h>
+#include <linux/backlight.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <linux/dma-mapping.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+
+#include "fbtft.h"
+
+extern void fbtft_sysfs_init(struct fbtft_par *par);
+extern void fbtft_sysfs_exit(struct fbtft_par *par);
+extern void fbtft_expand_debug_value(unsigned long *debug);
+extern int fbtft_gamma_parse_str(struct fbtft_par *par, unsigned long *curves,
+						const char *str, int size);
+
+static unsigned long debug;
+module_param(debug, ulong , 0);
+MODULE_PARM_DESC(debug, "override device debug level");
+
+static bool dma = true;
+module_param(dma, bool, 0);
+MODULE_PARM_DESC(dma, "Use DMA buffer");
+
+
+void fbtft_dbg_hex(const struct device *dev, int groupsize,
+			void *buf, size_t len, const char *fmt, ...)
+{
+	va_list args;
+	static char textbuf[512];
+	char *text = textbuf;
+	size_t text_len;
+
+	va_start(args, fmt);
+	text_len = vscnprintf(text, sizeof(textbuf), fmt, args);
+	va_end(args);
+
+	hex_dump_to_buffer(buf, len, 32, groupsize, text + text_len,
+				512 - text_len, false);
+
+	if (len > 32)
+		dev_info(dev, "%s ...\n", text);
+	else
+		dev_info(dev, "%s\n", text);
+}
+EXPORT_SYMBOL(fbtft_dbg_hex);
+
+static unsigned long fbtft_request_gpios_match(struct fbtft_par *par,
+					const struct fbtft_gpio *gpio)
+{
+	int ret;
+	long val;
+
+	fbtft_par_dbg(DEBUG_REQUEST_GPIOS_MATCH, par, "%s('%s')\n",
+		__func__, gpio->name);
+
+	if (strcasecmp(gpio->name, "reset") == 0) {
+		par->gpio.reset = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "dc") == 0) {
+		par->gpio.dc = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	} else if (strcasecmp(gpio->name, "cs") == 0) {
+		par->gpio.cs = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "wr") == 0) {
+		par->gpio.wr = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "rd") == 0) {
+		par->gpio.rd = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "latch") == 0) {
+		par->gpio.latch = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	} else if (gpio->name[0] == 'd' && gpio->name[1] == 'b') {
+		ret = kstrtol(&gpio->name[2], 10, &val);
+		if (ret == 0 && val < 16) {
+			par->gpio.db[val] = gpio->gpio;
+			return GPIOF_OUT_INIT_LOW;
+		}
+	} else if (strcasecmp(gpio->name, "led") == 0) {
+		par->gpio.led[0] = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	} else if (strcasecmp(gpio->name, "led_") == 0) {
+		par->gpio.led[0] = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	}
+
+	return FBTFT_GPIO_NO_MATCH;
+}
+
+static int fbtft_request_gpios(struct fbtft_par *par)
+{
+	struct fbtft_platform_data *pdata = par->pdata;
+	const struct fbtft_gpio *gpio;
+	unsigned long flags;
+	int ret;
+
+	if (pdata && pdata->gpios) {
+		gpio = pdata->gpios;
+		while (gpio->name[0]) {
+			flags = FBTFT_GPIO_NO_MATCH;
+			/* if driver provides match function, try it first,
+			   if no match use our own */
+			if (par->fbtftops.request_gpios_match)
+				flags = par->fbtftops.request_gpios_match(par, gpio);
+			if (flags == FBTFT_GPIO_NO_MATCH)
+				flags = fbtft_request_gpios_match(par, gpio);
+			if (flags != FBTFT_GPIO_NO_MATCH) {
+				ret = devm_gpio_request_one(par->info->device,
+						gpio->gpio, flags,
+						par->info->device->driver->name);
+				if (ret < 0) {
+					dev_err(par->info->device,
+						"%s: gpio_request_one('%s'=%d) failed with %d\n",
+						__func__, gpio->name,
+						gpio->gpio, ret);
+					return ret;
+				}
+				fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par,
+					"%s: '%s' = GPIO%d\n",
+					__func__, gpio->name, gpio->gpio);
+			}
+			gpio++;
+		}
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static int fbtft_request_one_gpio(struct fbtft_par *par,
+				  const char *name, int index, int *gpiop)
+{
+	struct device *dev = par->info->device;
+	struct device_node *node = dev->of_node;
+	int gpio, flags, ret = 0;
+	enum of_gpio_flags of_flags;
+
+	if (of_find_property(node, name, NULL)) {
+		gpio = of_get_named_gpio_flags(node, name, index, &of_flags);
+		if (gpio == -ENOENT)
+			return 0;
+		if (gpio == -EPROBE_DEFER)
+			return gpio;
+		if (gpio < 0) {
+			dev_err(dev,
+				"failed to get '%s' from DT\n", name);
+			return gpio;
+		}
+
+		/* active low translates to initially low */
+		flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW :
+							GPIOF_OUT_INIT_HIGH;
+		ret = devm_gpio_request_one(dev, gpio, flags,
+						dev->driver->name);
+		if (ret) {
+			dev_err(dev,
+				"gpio_request_one('%s'=%d) failed with %d\n",
+				name, gpio, ret);
+			return ret;
+		}
+		if (gpiop)
+			*gpiop = gpio;
+		fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' = GPIO%d\n",
+							__func__, name, gpio);
+	}
+
+	return ret;
+}
+
+static int fbtft_request_gpios_dt(struct fbtft_par *par)
+{
+	int i;
+	int ret;
+
+	if (!par->info->device->of_node)
+		return -EINVAL;
+
+	ret = fbtft_request_one_gpio(par, "reset-gpios", 0, &par->gpio.reset);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "dc-gpios", 0, &par->gpio.dc);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "rd-gpios", 0, &par->gpio.rd);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "wr-gpios", 0, &par->gpio.wr);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "cs-gpios", 0, &par->gpio.cs);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "latch-gpios", 0, &par->gpio.latch);
+	if (ret)
+		return ret;
+	for (i = 0; i < 16; i++) {
+		ret = fbtft_request_one_gpio(par, "db-gpios", i,
+						&par->gpio.db[i]);
+		if (ret)
+			return ret;
+		ret = fbtft_request_one_gpio(par, "led-gpios", i,
+						&par->gpio.led[i]);
+		if (ret)
+			return ret;
+		ret = fbtft_request_one_gpio(par, "aux-gpios", i,
+						&par->gpio.aux[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_FB_BACKLIGHT
+static int fbtft_backlight_update_status(struct backlight_device *bd)
+{
+	struct fbtft_par *par = bl_get_data(bd);
+	bool polarity = !!(bd->props.state & BL_CORE_DRIVER1);
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par,
+		"%s: polarity=%d, power=%d, fb_blank=%d\n",
+		__func__, polarity, bd->props.power, bd->props.fb_blank);
+
+	if ((bd->props.power == FB_BLANK_UNBLANK) && (bd->props.fb_blank == FB_BLANK_UNBLANK))
+		gpio_set_value(par->gpio.led[0], polarity);
+	else
+		gpio_set_value(par->gpio.led[0], !polarity);
+
+	return 0;
+}
+
+static int fbtft_backlight_get_brightness(struct backlight_device *bd)
+{
+	return bd->props.brightness;
+}
+
+void fbtft_unregister_backlight(struct fbtft_par *par)
+{
+	const struct backlight_ops *bl_ops;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s()\n", __func__);
+
+	if (par->info->bl_dev) {
+		par->info->bl_dev->props.power = FB_BLANK_POWERDOWN;
+		backlight_update_status(par->info->bl_dev);
+		bl_ops = par->info->bl_dev->ops;
+		backlight_device_unregister(par->info->bl_dev);
+		par->info->bl_dev = NULL;
+	}
+}
+
+void fbtft_register_backlight(struct fbtft_par *par)
+{
+	struct backlight_device *bd;
+	struct backlight_properties bl_props = { 0, };
+	struct backlight_ops *bl_ops;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s()\n", __func__);
+
+	if (par->gpio.led[0] == -1) {
+		fbtft_par_dbg(DEBUG_BACKLIGHT, par,
+			"%s(): led pin not set, exiting.\n", __func__);
+		return;
+	}
+
+	bl_ops = devm_kzalloc(par->info->device, sizeof(struct backlight_ops),
+				GFP_KERNEL);
+	if (!bl_ops) {
+		dev_err(par->info->device,
+			"%s: could not allocate memeory for backlight operations.\n",
+			__func__);
+		return;
+	}
+
+	bl_ops->get_brightness = fbtft_backlight_get_brightness;
+	bl_ops->update_status = fbtft_backlight_update_status;
+	bl_props.type = BACKLIGHT_RAW;
+	/* Assume backlight is off, get polarity from current state of pin */
+	bl_props.power = FB_BLANK_POWERDOWN;
+	if (!gpio_get_value(par->gpio.led[0]))
+		bl_props.state |= BL_CORE_DRIVER1;
+
+	bd = backlight_device_register(dev_driver_string(par->info->device),
+				par->info->device, par, bl_ops, &bl_props);
+	if (IS_ERR(bd)) {
+		dev_err(par->info->device,
+			"cannot register backlight device (%ld)\n",
+			PTR_ERR(bd));
+		return;
+	}
+	par->info->bl_dev = bd;
+
+	if (!par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
+}
+#else
+void fbtft_register_backlight(struct fbtft_par *par) { };
+void fbtft_unregister_backlight(struct fbtft_par *par) { };
+#endif
+EXPORT_SYMBOL(fbtft_register_backlight);
+EXPORT_SYMBOL(fbtft_unregister_backlight);
+
+static void fbtft_set_addr_win(struct fbtft_par *par, int xs, int ys, int xe,
+			       int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address set */
+	write_reg(par, 0x2A,
+		(xs >> 8) & 0xFF, xs & 0xFF, (xe >> 8) & 0xFF, xe & 0xFF);
+
+	/* Row adress set */
+	write_reg(par, 0x2B,
+		(ys >> 8) & 0xFF, ys & 0xFF, (ye >> 8) & 0xFF, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+
+static void fbtft_reset(struct fbtft_par *par)
+{
+	if (par->gpio.reset == -1)
+		return;
+	fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
+	gpio_set_value(par->gpio.reset, 0);
+	udelay(20);
+	gpio_set_value(par->gpio.reset, 1);
+	mdelay(120);
+}
+
+
+static void fbtft_update_display(struct fbtft_par *par, unsigned start_line,
+				 unsigned end_line)
+{
+	size_t offset, len;
+	struct timespec ts_start, ts_end, ts_fps, ts_duration;
+	long fps_ms, fps_us, duration_ms, duration_us;
+	long fps, throughput;
+	bool timeit = false;
+	int ret = 0;
+
+	if (unlikely(par->debug & (DEBUG_TIME_FIRST_UPDATE | DEBUG_TIME_EACH_UPDATE))) {
+		if ((par->debug & DEBUG_TIME_EACH_UPDATE) || \
+				((par->debug & DEBUG_TIME_FIRST_UPDATE) && !par->first_update_done)) {
+			getnstimeofday(&ts_start);
+			timeit = true;
+		}
+	}
+
+	/* Sanity checks */
+	if (start_line > end_line) {
+		dev_warn(par->info->device,
+			"%s: start_line=%u is larger than end_line=%u. Shouldn't happen, will do full display update\n",
+			__func__, start_line, end_line);
+		start_line = 0;
+		end_line = par->info->var.yres - 1;
+	}
+	if (start_line > par->info->var.yres - 1 || end_line > par->info->var.yres - 1) {
+		dev_warn(par->info->device,
+			"%s: start_line=%u or end_line=%u is larger than max=%d. Shouldn't happen, will do full display update\n",
+			__func__, start_line, end_line, par->info->var.yres - 1);
+		start_line = 0;
+		end_line = par->info->var.yres - 1;
+	}
+
+	fbtft_par_dbg(DEBUG_UPDATE_DISPLAY, par, "%s(start_line=%u, end_line=%u)\n",
+		__func__, start_line, end_line);
+
+	if (par->fbtftops.set_addr_win)
+		par->fbtftops.set_addr_win(par, 0, start_line,
+				par->info->var.xres-1, end_line);
+
+	offset = start_line * par->info->fix.line_length;
+	len = (end_line - start_line + 1) * par->info->fix.line_length;
+	ret = par->fbtftops.write_vmem(par, offset, len);
+	if (ret < 0)
+		dev_err(par->info->device,
+			"%s: write_vmem failed to update display buffer\n",
+			__func__);
+
+	if (unlikely(timeit)) {
+		getnstimeofday(&ts_end);
+		if (par->update_time.tv_nsec == 0 && par->update_time.tv_sec == 0) {
+			par->update_time.tv_sec = ts_start.tv_sec;
+			par->update_time.tv_nsec = ts_start.tv_nsec;
+		}
+		ts_fps = timespec_sub(ts_start, par->update_time);
+		par->update_time.tv_sec = ts_start.tv_sec;
+		par->update_time.tv_nsec = ts_start.tv_nsec;
+		fps_ms = (ts_fps.tv_sec * 1000) + ((ts_fps.tv_nsec / 1000000) % 1000);
+		fps_us = (ts_fps.tv_nsec / 1000) % 1000;
+		fps = fps_ms * 1000 + fps_us;
+		fps = fps ? 1000000 / fps : 0;
+
+		ts_duration = timespec_sub(ts_end, ts_start);
+		duration_ms = (ts_duration.tv_sec * 1000) + ((ts_duration.tv_nsec / 1000000) % 1000);
+		duration_us = (ts_duration.tv_nsec / 1000) % 1000;
+		throughput = duration_ms * 1000 + duration_us;
+		throughput = throughput ? (len * 1000) / throughput : 0;
+		throughput = throughput * 1000 / 1024;
+
+		dev_info(par->info->device,
+			"Display update: %ld kB/s (%ld.%.3ld ms), fps=%ld (%ld.%.3ld ms)\n",
+			throughput, duration_ms, duration_us,
+			fps, fps_ms, fps_us);
+		par->first_update_done = true;
+	}
+}
+
+
+static void fbtft_mkdirty(struct fb_info *info, int y, int height)
+{
+	struct fbtft_par *par = info->par;
+	struct fb_deferred_io *fbdefio = info->fbdefio;
+
+	/* special case, needed ? */
+	if (y == -1) {
+		y = 0;
+		height = info->var.yres - 1;
+	}
+
+	/* Mark display lines/area as dirty */
+	spin_lock(&par->dirty_lock);
+	if (y < par->dirty_lines_start)
+		par->dirty_lines_start = y;
+	if (y + height - 1 > par->dirty_lines_end)
+		par->dirty_lines_end = y + height - 1;
+	spin_unlock(&par->dirty_lock);
+
+	/* Schedule deferred_io to update display (no-op if already on queue)*/
+	schedule_delayed_work(&info->deferred_work, fbdefio->delay);
+}
+
+static void fbtft_deferred_io(struct fb_info *info, struct list_head *pagelist)
+{
+	struct fbtft_par *par = info->par;
+	unsigned dirty_lines_start, dirty_lines_end;
+	struct page *page;
+	unsigned long index;
+	unsigned y_low = 0, y_high = 0;
+	int count = 0;
+
+	spin_lock(&par->dirty_lock);
+	dirty_lines_start = par->dirty_lines_start;
+	dirty_lines_end = par->dirty_lines_end;
+	/* set display line markers as clean */
+	par->dirty_lines_start = par->info->var.yres - 1;
+	par->dirty_lines_end = 0;
+	spin_unlock(&par->dirty_lock);
+
+	/* Mark display lines as dirty */
+	list_for_each_entry(page, pagelist, lru) {
+		count++;
+		index = page->index << PAGE_SHIFT;
+		y_low = index / info->fix.line_length;
+		y_high = (index + PAGE_SIZE - 1) / info->fix.line_length;
+		fbtft_dev_dbg(DEBUG_DEFERRED_IO, par, info->device,
+			"page->index=%lu y_low=%d y_high=%d\n",
+			page->index, y_low, y_high);
+		if (y_high > info->var.yres - 1)
+			y_high = info->var.yres - 1;
+		if (y_low < dirty_lines_start)
+			dirty_lines_start = y_low;
+		if (y_high > dirty_lines_end)
+			dirty_lines_end = y_high;
+	}
+
+	par->fbtftops.update_display(info->par,
+					dirty_lines_start, dirty_lines_end);
+}
+
+
+static void fbtft_fb_fillrect(struct fb_info *info,
+			      const struct fb_fillrect *rect)
+{
+	struct fbtft_par *par = info->par;
+
+	fbtft_dev_dbg(DEBUG_FB_FILLRECT, par, info->dev,
+		"%s: dx=%d, dy=%d, width=%d, height=%d\n",
+		__func__, rect->dx, rect->dy, rect->width, rect->height);
+	sys_fillrect(info, rect);
+
+	par->fbtftops.mkdirty(info, rect->dy, rect->height);
+}
+
+static void fbtft_fb_copyarea(struct fb_info *info,
+			      const struct fb_copyarea *area)
+{
+	struct fbtft_par *par = info->par;
+
+	fbtft_dev_dbg(DEBUG_FB_COPYAREA, par, info->dev,
+		"%s: dx=%d, dy=%d, width=%d, height=%d\n",
+		__func__,  area->dx, area->dy, area->width, area->height);
+	sys_copyarea(info, area);
+
+	par->fbtftops.mkdirty(info, area->dy, area->height);
+}
+
+static void fbtft_fb_imageblit(struct fb_info *info,
+			       const struct fb_image *image)
+{
+	struct fbtft_par *par = info->par;
+
+	fbtft_dev_dbg(DEBUG_FB_IMAGEBLIT, par, info->dev,
+		"%s: dx=%d, dy=%d, width=%d, height=%d\n",
+		__func__,  image->dx, image->dy, image->width, image->height);
+	sys_imageblit(info, image);
+
+	par->fbtftops.mkdirty(info, image->dy, image->height);
+}
+
+static ssize_t fbtft_fb_write(struct fb_info *info, const char __user *buf,
+			      size_t count, loff_t *ppos)
+{
+	struct fbtft_par *par = info->par;
+	ssize_t res;
+
+	fbtft_dev_dbg(DEBUG_FB_WRITE, par, info->dev,
+		"%s: count=%zd, ppos=%llu\n", __func__,  count, *ppos);
+	res = fb_sys_write(info, buf, count, ppos);
+
+	/* TODO: only mark changed area
+	   update all for now */
+	par->fbtftops.mkdirty(info, -1, 0);
+
+	return res;
+}
+
+/* from pxafb.c */
+static unsigned int chan_to_field(unsigned chan, struct fb_bitfield *bf)
+{
+	chan &= 0xffff;
+	chan >>= 16 - bf->length;
+	return chan << bf->offset;
+}
+
+static int fbtft_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
+			      unsigned blue, unsigned transp,
+			      struct fb_info *info)
+{
+	struct fbtft_par *par = info->par;
+	unsigned val;
+	int ret = 1;
+
+	fbtft_dev_dbg(DEBUG_FB_SETCOLREG, par, info->dev,
+		"%s(regno=%u, red=0x%X, green=0x%X, blue=0x%X, trans=0x%X)\n",
+		__func__, regno, red, green, blue, transp);
+
+	switch (info->fix.visual) {
+	case FB_VISUAL_TRUECOLOR:
+		if (regno < 16) {
+			u32 *pal = info->pseudo_palette;
+
+			val  = chan_to_field(red,   &info->var.red);
+			val |= chan_to_field(green, &info->var.green);
+			val |= chan_to_field(blue,  &info->var.blue);
+
+			pal[regno] = val;
+			ret = 0;
+		}
+		break;
+
+	}
+	return ret;
+}
+
+static int fbtft_fb_blank(int blank, struct fb_info *info)
+{
+	struct fbtft_par *par = info->par;
+	int ret = -EINVAL;
+
+	fbtft_dev_dbg(DEBUG_FB_BLANK, par, info->dev, "%s(blank=%d)\n",
+		__func__, blank);
+
+	if (!par->fbtftops.blank)
+		return ret;
+
+	switch (blank) {
+	case FB_BLANK_POWERDOWN:
+	case FB_BLANK_VSYNC_SUSPEND:
+	case FB_BLANK_HSYNC_SUSPEND:
+	case FB_BLANK_NORMAL:
+		ret = par->fbtftops.blank(par, true);
+		break;
+	case FB_BLANK_UNBLANK:
+		ret = par->fbtftops.blank(par, false);
+		break;
+	}
+	return ret;
+}
+
+static void fbtft_merge_fbtftops(struct fbtft_ops *dst, struct fbtft_ops *src)
+{
+	if (src->write)
+		dst->write = src->write;
+	if (src->read)
+		dst->read = src->read;
+	if (src->write_vmem)
+		dst->write_vmem = src->write_vmem;
+	if (src->write_register)
+		dst->write_register = src->write_register;
+	if (src->set_addr_win)
+		dst->set_addr_win = src->set_addr_win;
+	if (src->reset)
+		dst->reset = src->reset;
+	if (src->mkdirty)
+		dst->mkdirty = src->mkdirty;
+	if (src->update_display)
+		dst->update_display = src->update_display;
+	if (src->init_display)
+		dst->init_display = src->init_display;
+	if (src->blank)
+		dst->blank = src->blank;
+	if (src->request_gpios_match)
+		dst->request_gpios_match = src->request_gpios_match;
+	if (src->request_gpios)
+		dst->request_gpios = src->request_gpios;
+	if (src->verify_gpios)
+		dst->verify_gpios = src->verify_gpios;
+	if (src->register_backlight)
+		dst->register_backlight = src->register_backlight;
+	if (src->unregister_backlight)
+		dst->unregister_backlight = src->unregister_backlight;
+	if (src->set_var)
+		dst->set_var = src->set_var;
+	if (src->set_gamma)
+		dst->set_gamma = src->set_gamma;
+}
+
+/**
+ * fbtft_framebuffer_alloc - creates a new frame buffer info structure
+ *
+ * @display: pointer to structure describing the display
+ * @dev: pointer to the device for this fb, this can be NULL
+ *
+ * Creates a new frame buffer info structure.
+ *
+ * Also creates and populates the following structures:
+ *   info->fbops
+ *   info->fbdefio
+ *   info->pseudo_palette
+ *   par->fbtftops
+ *   par->txbuf
+ *
+ * Returns the new structure, or NULL if an error occurred.
+ *
+ */
+struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
+					struct device *dev)
+{
+	struct fb_info *info;
+	struct fbtft_par *par;
+	struct fb_ops *fbops = NULL;
+	struct fb_deferred_io *fbdefio = NULL;
+	struct fbtft_platform_data *pdata = dev->platform_data;
+	u8 *vmem = NULL;
+	void *txbuf = NULL;
+	void *buf = NULL;
+	unsigned width;
+	unsigned height;
+	int txbuflen = display->txbuflen;
+	unsigned bpp = display->bpp;
+	unsigned fps = display->fps;
+	int vmem_size, i;
+	int *init_sequence = display->init_sequence;
+	char *gamma = display->gamma;
+	unsigned long *gamma_curves = NULL;
+
+	/* sanity check */
+	if (display->gamma_num * display->gamma_len > FBTFT_GAMMA_MAX_VALUES_TOTAL) {
+		dev_err(dev,
+			"%s: FBTFT_GAMMA_MAX_VALUES_TOTAL=%d is exceeded\n",
+			__func__, FBTFT_GAMMA_MAX_VALUES_TOTAL);
+		return NULL;
+	}
+
+	/* defaults */
+	if (!fps)
+		fps = 20;
+	if (!bpp)
+		bpp = 16;
+
+	if (!pdata) {
+		dev_err(dev, "platform data is missing\n");
+		return NULL;
+	}
+
+	/* override driver values? */
+	if (pdata->fps)
+		fps = pdata->fps;
+	if (pdata->txbuflen)
+		txbuflen = pdata->txbuflen;
+	if (pdata->display.init_sequence)
+		init_sequence = pdata->display.init_sequence;
+	if (pdata->gamma)
+		gamma = pdata->gamma;
+	if (pdata->display.debug)
+		display->debug = pdata->display.debug;
+	if (pdata->display.backlight)
+		display->backlight = pdata->display.backlight;
+	if (pdata->display.width)
+		display->width = pdata->display.width;
+	if (pdata->display.height)
+		display->height = pdata->display.height;
+	if (pdata->display.buswidth)
+		display->buswidth = pdata->display.buswidth;
+	if (pdata->display.regwidth)
+		display->regwidth = pdata->display.regwidth;
+
+	display->debug |= debug;
+	fbtft_expand_debug_value(&display->debug);
+
+	switch (pdata->rotate) {
+	case 90:
+	case 270:
+		width =  display->height;
+		height = display->width;
+		break;
+	default:
+		width =  display->width;
+		height = display->height;
+	}
+
+	vmem_size = display->width * display->height * bpp / 8;
+	vmem = vzalloc(vmem_size);
+	if (!vmem)
+		goto alloc_fail;
+
+	fbops = devm_kzalloc(dev, sizeof(struct fb_ops), GFP_KERNEL);
+	if (!fbops)
+		goto alloc_fail;
+
+	fbdefio = devm_kzalloc(dev, sizeof(struct fb_deferred_io), GFP_KERNEL);
+	if (!fbdefio)
+		goto alloc_fail;
+
+	buf = devm_kzalloc(dev, 128, GFP_KERNEL);
+	if (!buf)
+		goto alloc_fail;
+
+	if (display->gamma_num && display->gamma_len) {
+		gamma_curves = devm_kzalloc(dev, display->gamma_num * display->gamma_len * sizeof(gamma_curves[0]),
+						GFP_KERNEL);
+		if (!gamma_curves)
+			goto alloc_fail;
+	}
+
+	info = framebuffer_alloc(sizeof(struct fbtft_par), dev);
+	if (!info)
+		goto alloc_fail;
+
+	info->screen_base = (u8 __force __iomem *)vmem;
+	info->fbops = fbops;
+	info->fbdefio = fbdefio;
+
+	fbops->owner        =      dev->driver->owner;
+	fbops->fb_read      =      fb_sys_read;
+	fbops->fb_write     =      fbtft_fb_write;
+	fbops->fb_fillrect  =      fbtft_fb_fillrect;
+	fbops->fb_copyarea  =      fbtft_fb_copyarea;
+	fbops->fb_imageblit =      fbtft_fb_imageblit;
+	fbops->fb_setcolreg =      fbtft_fb_setcolreg;
+	fbops->fb_blank     =      fbtft_fb_blank;
+
+	fbdefio->delay =           HZ/fps;
+	fbdefio->deferred_io =     fbtft_deferred_io;
+	fb_deferred_io_init(info);
+
+	strncpy(info->fix.id, dev->driver->name, 16);
+	info->fix.type =           FB_TYPE_PACKED_PIXELS;
+	info->fix.visual =         FB_VISUAL_TRUECOLOR;
+	info->fix.xpanstep =	   0;
+	info->fix.ypanstep =	   0;
+	info->fix.ywrapstep =	   0;
+	info->fix.line_length =    width*bpp/8;
+	info->fix.accel =          FB_ACCEL_NONE;
+	info->fix.smem_len =       vmem_size;
+
+	info->var.rotate =         pdata->rotate;
+	info->var.xres =           width;
+	info->var.yres =           height;
+	info->var.xres_virtual =   info->var.xres;
+	info->var.yres_virtual =   info->var.yres;
+	info->var.bits_per_pixel = bpp;
+	info->var.nonstd =         1;
+
+	/* RGB565 */
+	info->var.red.offset =     11;
+	info->var.red.length =     5;
+	info->var.green.offset =   5;
+	info->var.green.length =   6;
+	info->var.blue.offset =    0;
+	info->var.blue.length =    5;
+	info->var.transp.offset =  0;
+	info->var.transp.length =  0;
+
+	info->flags =              FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
+
+	par = info->par;
+	par->info = info;
+	par->pdata = dev->platform_data;
+	par->debug = display->debug;
+	par->buf = buf;
+	spin_lock_init(&par->dirty_lock);
+	par->bgr = pdata->bgr;
+	par->startbyte = pdata->startbyte;
+	par->init_sequence = init_sequence;
+	par->gamma.curves = gamma_curves;
+	par->gamma.num_curves = display->gamma_num;
+	par->gamma.num_values = display->gamma_len;
+	mutex_init(&par->gamma.lock);
+	info->pseudo_palette = par->pseudo_palette;
+
+	if (par->gamma.curves && gamma) {
+		if (fbtft_gamma_parse_str(par,
+			par->gamma.curves, gamma, strlen(gamma)))
+			goto alloc_fail;
+	}
+
+	/* Transmit buffer */
+	if (txbuflen == -1)
+		txbuflen = vmem_size + 2; /* add in case startbyte is used */
+
+#ifdef __LITTLE_ENDIAN
+	if ((!txbuflen) && (bpp > 8))
+		txbuflen = PAGE_SIZE; /* need buffer for byteswapping */
+#endif
+
+	if (txbuflen > 0) {
+		if (dma) {
+			dev->coherent_dma_mask = ~0;
+			txbuf = dmam_alloc_coherent(dev, txbuflen, &par->txbuf.dma, GFP_DMA);
+		} else {
+			txbuf = devm_kzalloc(par->info->device, txbuflen, GFP_KERNEL);
+		}
+		if (!txbuf)
+			goto alloc_fail;
+		par->txbuf.buf = txbuf;
+		par->txbuf.len = txbuflen;
+	}
+
+	/* Initialize gpios to disabled */
+	par->gpio.reset = -1;
+	par->gpio.dc = -1;
+	par->gpio.rd = -1;
+	par->gpio.wr = -1;
+	par->gpio.cs = -1;
+	par->gpio.latch = -1;
+	for (i = 0; i < 16; i++) {
+		par->gpio.db[i] = -1;
+		par->gpio.led[i] = -1;
+		par->gpio.aux[i] = -1;
+	}
+
+	/* default fbtft operations */
+	par->fbtftops.write = fbtft_write_spi;
+	par->fbtftops.read = fbtft_read_spi;
+	par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
+	par->fbtftops.write_register = fbtft_write_reg8_bus8;
+	par->fbtftops.set_addr_win = fbtft_set_addr_win;
+	par->fbtftops.reset = fbtft_reset;
+	par->fbtftops.mkdirty = fbtft_mkdirty;
+	par->fbtftops.update_display = fbtft_update_display;
+	par->fbtftops.request_gpios = fbtft_request_gpios;
+	if (display->backlight)
+		par->fbtftops.register_backlight = fbtft_register_backlight;
+
+	/* use driver provided functions */
+	fbtft_merge_fbtftops(&par->fbtftops, &display->fbtftops);
+
+	return info;
+
+alloc_fail:
+	vfree(vmem);
+
+	return NULL;
+}
+EXPORT_SYMBOL(fbtft_framebuffer_alloc);
+
+/**
+ * fbtft_framebuffer_release - frees up all memory used by the framebuffer
+ *
+ * @info: frame buffer info structure
+ *
+ */
+void fbtft_framebuffer_release(struct fb_info *info)
+{
+	fb_deferred_io_cleanup(info);
+	vfree(info->screen_base);
+	framebuffer_release(info);
+}
+EXPORT_SYMBOL(fbtft_framebuffer_release);
+
+/**
+ *	fbtft_register_framebuffer - registers a tft frame buffer device
+ *	@fb_info: frame buffer info structure
+ *
+ *  Sets SPI driverdata if needed
+ *  Requests needed gpios.
+ *  Initializes display
+ *  Updates display.
+ *	Registers a frame buffer device @fb_info.
+ *
+ *	Returns negative errno on error, or zero for success.
+ *
+ */
+int fbtft_register_framebuffer(struct fb_info *fb_info)
+{
+	int ret;
+	char text1[50] = "";
+	char text2[50] = "";
+	struct fbtft_par *par = fb_info->par;
+	struct spi_device *spi = par->spi;
+
+	/* sanity checks */
+	if (!par->fbtftops.init_display) {
+		dev_err(fb_info->device, "missing fbtftops.init_display()\n");
+		return -EINVAL;
+	}
+
+	if (spi)
+		spi_set_drvdata(spi, fb_info);
+	if (par->pdev)
+		platform_set_drvdata(par->pdev, fb_info);
+
+	ret = par->fbtftops.request_gpios(par);
+	if (ret < 0)
+		goto reg_fail;
+
+	if (par->fbtftops.verify_gpios) {
+		ret = par->fbtftops.verify_gpios(par);
+		if (ret < 0)
+			goto reg_fail;
+	}
+
+	ret = par->fbtftops.init_display(par);
+	if (ret < 0)
+		goto reg_fail;
+	if (par->fbtftops.set_var) {
+		ret = par->fbtftops.set_var(par);
+		if (ret < 0)
+			goto reg_fail;
+	}
+
+	/* update the entire display */
+	par->fbtftops.update_display(par, 0, par->info->var.yres - 1);
+
+	if (par->fbtftops.set_gamma && par->gamma.curves) {
+		ret = par->fbtftops.set_gamma(par, par->gamma.curves);
+		if (ret)
+			goto reg_fail;
+	}
+
+	if (par->fbtftops.register_backlight)
+		par->fbtftops.register_backlight(par);
+
+	ret = register_framebuffer(fb_info);
+	if (ret < 0)
+		goto reg_fail;
+
+	fbtft_sysfs_init(par);
+
+	if (par->txbuf.buf)
+		sprintf(text1, ", %d KiB %sbuffer memory",
+			par->txbuf.len >> 10, par->txbuf.dma ? "DMA " : "");
+	if (spi)
+		sprintf(text2, ", spi%d.%d at %d MHz", spi->master->bus_num,
+				spi->chip_select, spi->max_speed_hz/1000000);
+	dev_info(fb_info->dev,
+		"%s frame buffer, %dx%d, %d KiB video memory%s, fps=%lu%s\n",
+		fb_info->fix.id, fb_info->var.xres, fb_info->var.yres,
+		fb_info->fix.smem_len >> 10, text1,
+		HZ/fb_info->fbdefio->delay, text2);
+
+#ifdef CONFIG_FB_BACKLIGHT
+	/* Turn on backlight if available */
+	if (fb_info->bl_dev) {
+		fb_info->bl_dev->props.power = FB_BLANK_UNBLANK;
+		fb_info->bl_dev->ops->update_status(fb_info->bl_dev);
+	}
+#endif
+
+	return 0;
+
+reg_fail:
+	if (par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight(par);
+	if (spi)
+		spi_set_drvdata(spi, NULL);
+	if (par->pdev)
+		platform_set_drvdata(par->pdev, NULL);
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_register_framebuffer);
+
+/**
+ *	fbtft_unregister_framebuffer - releases a tft frame buffer device
+ *	@fb_info: frame buffer info structure
+ *
+ *  Frees SPI driverdata if needed
+ *  Frees gpios.
+ *	Unregisters frame buffer device.
+ *
+ */
+int fbtft_unregister_framebuffer(struct fb_info *fb_info)
+{
+	struct fbtft_par *par = fb_info->par;
+	struct spi_device *spi = par->spi;
+	int ret;
+
+	if (spi)
+		spi_set_drvdata(spi, NULL);
+	if (par->pdev)
+		platform_set_drvdata(par->pdev, NULL);
+	if (par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight(par);
+	fbtft_sysfs_exit(par);
+	ret = unregister_framebuffer(fb_info);
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_unregister_framebuffer);
+
+#ifdef CONFIG_OF
+/**
+ * fbtft_init_display_dt() - Device Tree init_display() function
+ * @par: Driver data
+ *
+ * Return: 0 if successful, negative if error
+ */
+static int fbtft_init_display_dt(struct fbtft_par *par)
+{
+	struct device_node *node = par->info->device->of_node;
+	struct property *prop;
+	const __be32 *p;
+	u32 val;
+	int buf[64], i, j;
+	char msg[128];
+	char str[16];
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (!node)
+		return -EINVAL;
+
+	prop = of_find_property(node, "init", NULL);
+	p = of_prop_next_u32(prop, NULL, &val);
+	if (!p)
+		return -EINVAL;
+	while (p) {
+		if (val & FBTFT_OF_INIT_CMD) {
+			val &= 0xFFFF;
+			i = 0;
+			while (p && !(val & 0xFFFF0000)) {
+				if (i > 63) {
+					dev_err(par->info->device,
+					"%s: Maximum register values exceeded\n",
+					__func__);
+					return -EINVAL;
+				}
+				buf[i++] = val;
+				p = of_prop_next_u32(prop, p, &val);
+			}
+			/* make debug message */
+			msg[0] = '\0';
+			for (j = 0; j < i; j++) {
+				snprintf(str, 128, " %02X", buf[j]);
+				strcat(msg, str);
+			}
+			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+				"init: write_register:%s\n", msg);
+
+			par->fbtftops.write_register(par, i,
+				buf[0], buf[1], buf[2], buf[3],
+				buf[4], buf[5], buf[6], buf[7],
+				buf[8], buf[9], buf[10], buf[11],
+				buf[12], buf[13], buf[14], buf[15],
+				buf[16], buf[17], buf[18], buf[19],
+				buf[20], buf[21], buf[22], buf[23],
+				buf[24], buf[25], buf[26], buf[27],
+				buf[28], buf[29], buf[30], buf[31],
+				buf[32], buf[33], buf[34], buf[35],
+				buf[36], buf[37], buf[38], buf[39],
+				buf[40], buf[41], buf[42], buf[43],
+				buf[44], buf[45], buf[46], buf[47],
+				buf[48], buf[49], buf[50], buf[51],
+				buf[52], buf[53], buf[54], buf[55],
+				buf[56], buf[57], buf[58], buf[59],
+				buf[60], buf[61], buf[62], buf[63]);
+		} else if (val & FBTFT_OF_INIT_DELAY) {
+			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+				"init: msleep(%u)\n", val & 0xFFFF);
+			msleep(val & 0xFFFF);
+			p = of_prop_next_u32(prop, p, &val);
+		} else {
+			dev_err(par->info->device, "illegal init value 0x%X\n",
+									val);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+#endif
+
+/**
+ * fbtft_init_display() - Generic init_display() function
+ * @par: Driver data
+ *
+ * Uses par->init_sequence to do the initialization
+ *
+ * Return: 0 if successful, negative if error
+ */
+int fbtft_init_display(struct fbtft_par *par)
+{
+	int buf[64];
+	char msg[128];
+	char str[16];
+	int i = 0;
+	int j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* sanity check */
+	if (!par->init_sequence) {
+		dev_err(par->info->device,
+			"error: init_sequence is not set\n");
+		return -EINVAL;
+	}
+
+	/* make sure stop marker exists */
+	for (i = 0; i < FBTFT_MAX_INIT_SEQUENCE; i++)
+		if (par->init_sequence[i] == -3)
+			break;
+	if (i == FBTFT_MAX_INIT_SEQUENCE) {
+		dev_err(par->info->device,
+			"missing stop marker at end of init sequence\n");
+		return -EINVAL;
+	}
+
+	par->fbtftops.reset(par);
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	i = 0;
+	while (i < FBTFT_MAX_INIT_SEQUENCE) {
+		if (par->init_sequence[i] == -3) {
+			/* done */
+			return 0;
+		}
+		if (par->init_sequence[i] >= 0) {
+			dev_err(par->info->device,
+				"missing delimiter at position %d\n", i);
+			return -EINVAL;
+		}
+		if (par->init_sequence[i+1] < 0) {
+			dev_err(par->info->device,
+				"missing value after delimiter %d at position %d\n",
+				par->init_sequence[i], i);
+			return -EINVAL;
+		}
+		switch (par->init_sequence[i]) {
+		case -1:
+			i++;
+			/* make debug message */
+			strcpy(msg, "");
+			j = i + 1;
+			while (par->init_sequence[j] >= 0) {
+				sprintf(str, "0x%02X ", par->init_sequence[j]);
+				strcat(msg, str);
+				j++;
+			}
+			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+				"init: write(0x%02X) %s\n",
+				par->init_sequence[i], msg);
+
+			/* Write */
+			j = 0;
+			while (par->init_sequence[i] >= 0) {
+				if (j > 63) {
+					dev_err(par->info->device,
+					"%s: Maximum register values exceeded\n",
+					__func__);
+					return -EINVAL;
+				}
+				buf[j++] = par->init_sequence[i++];
+			}
+			par->fbtftops.write_register(par, j,
+				buf[0], buf[1], buf[2], buf[3],
+				buf[4], buf[5], buf[6], buf[7],
+				buf[8], buf[9], buf[10], buf[11],
+				buf[12], buf[13], buf[14], buf[15],
+				buf[16], buf[17], buf[18], buf[19],
+				buf[20], buf[21], buf[22], buf[23],
+				buf[24], buf[25], buf[26], buf[27],
+				buf[28], buf[29], buf[30], buf[31],
+				buf[32], buf[33], buf[34], buf[35],
+				buf[36], buf[37], buf[38], buf[39],
+				buf[40], buf[41], buf[42], buf[43],
+				buf[44], buf[45], buf[46], buf[47],
+				buf[48], buf[49], buf[50], buf[51],
+				buf[52], buf[53], buf[54], buf[55],
+				buf[56], buf[57], buf[58], buf[59],
+				buf[60], buf[61], buf[62], buf[63]);
+			break;
+		case -2:
+			i++;
+			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+				"init: mdelay(%d)\n", par->init_sequence[i]);
+			mdelay(par->init_sequence[i++]);
+			break;
+		default:
+			dev_err(par->info->device,
+				"unknown delimiter %d at position %d\n",
+				par->init_sequence[i], i);
+			return -EINVAL;
+		}
+	}
+
+	dev_err(par->info->device,
+		"%s: something is wrong. Shouldn't get here.\n", __func__);
+	return -EINVAL;
+}
+EXPORT_SYMBOL(fbtft_init_display);
+
+/**
+ * fbtft_verify_gpios() - Generic verify_gpios() function
+ * @par: Driver data
+ *
+ * Uses @spi, @pdev and @buswidth to determine which GPIOs is needed
+ *
+ * Return: 0 if successful, negative if error
+ */
+static int fbtft_verify_gpios(struct fbtft_par *par)
+{
+	struct fbtft_platform_data *pdata;
+	int i;
+
+	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
+
+	pdata = par->info->device->platform_data;
+	if (pdata->display.buswidth != 9 && par->startbyte == 0 && \
+							par->gpio.dc < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'dc' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+
+	if (!par->pdev)
+		return 0;
+
+	if (par->gpio.wr < 0) {
+		dev_err(par->info->device, "Missing 'wr' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	for (i = 0; i < pdata->display.buswidth; i++) {
+		if (par->gpio.db[i] < 0) {
+			dev_err(par->info->device,
+				"Missing 'db%02d' gpio. Aborting.\n", i);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+/* returns 0 if the property is not present */
+static u32 fbtft_of_value(struct device_node *node, const char *propname)
+{
+	int ret;
+	u32 val = 0;
+
+	ret = of_property_read_u32(node, propname, &val);
+	if (ret == 0)
+		pr_info("%s: %s = %u\n", __func__, propname, val);
+
+	return val;
+}
+
+static struct fbtft_platform_data *fbtft_probe_dt(struct device *dev)
+{
+	struct device_node *node = dev->of_node;
+	struct fbtft_platform_data *pdata;
+
+	if (!node) {
+		dev_err(dev, "Missing platform data or DT\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return ERR_PTR(-ENOMEM);
+
+	pdata->display.width = fbtft_of_value(node, "width");
+	pdata->display.height = fbtft_of_value(node, "height");
+	pdata->display.regwidth = fbtft_of_value(node, "regwidth");
+	pdata->display.buswidth = fbtft_of_value(node, "buswidth");
+	pdata->display.backlight = fbtft_of_value(node, "backlight");
+	pdata->display.bpp = fbtft_of_value(node, "bpp");
+	pdata->display.debug = fbtft_of_value(node, "debug");
+	pdata->rotate = fbtft_of_value(node, "rotate");
+	pdata->bgr = of_property_read_bool(node, "bgr");
+	pdata->fps = fbtft_of_value(node, "fps");
+	pdata->txbuflen = fbtft_of_value(node, "txbuflen");
+	pdata->startbyte = fbtft_of_value(node, "startbyte");
+	of_property_read_string(node, "gamma", (const char **)&pdata->gamma);
+
+	if (of_find_property(node, "led-gpios", NULL))
+		pdata->display.backlight = 1;
+	if (of_find_property(node, "init", NULL))
+		pdata->display.fbtftops.init_display = fbtft_init_display_dt;
+	pdata->display.fbtftops.request_gpios = fbtft_request_gpios_dt;
+
+	return pdata;
+}
+#else
+static struct fbtft_platform_data *fbtft_probe_dt(struct device *dev)
+{
+	dev_err(dev, "Missing platform data\n");
+	return ERR_PTR(-EINVAL);
+}
+#endif
+
+/**
+ * fbtft_probe_common() - Generic device probe() helper function
+ * @display: Display properties
+ * @sdev: SPI device
+ * @pdev: Platform device
+ *
+ * Allocates, initializes and registers a framebuffer
+ *
+ * Either @sdev or @pdev should be NULL
+ *
+ * Return: 0 if successful, negative if error
+ */
+int fbtft_probe_common(struct fbtft_display *display,
+			struct spi_device *sdev, struct platform_device *pdev)
+{
+	struct device *dev;
+	struct fb_info *info;
+	struct fbtft_par *par;
+	struct fbtft_platform_data *pdata;
+	int ret;
+
+	if (sdev)
+		dev = &sdev->dev;
+	else
+		dev = &pdev->dev;
+
+	if (unlikely(display->debug & DEBUG_DRIVER_INIT_FUNCTIONS))
+		dev_info(dev, "%s()\n", __func__);
+
+	pdata = dev->platform_data;
+	if (!pdata) {
+		pdata = fbtft_probe_dt(dev);
+		if (IS_ERR(pdata))
+			return PTR_ERR(pdata);
+		dev->platform_data = pdata;
+	}
+
+	info = fbtft_framebuffer_alloc(display, dev);
+	if (!info)
+		return -ENOMEM;
+
+	par = info->par;
+	par->spi = sdev;
+	par->pdev = pdev;
+
+	if (display->buswidth == 0) {
+		dev_err(dev, "buswidth is not set\n");
+		return -EINVAL;
+	}
+
+	/* write register functions */
+	if (display->regwidth == 8 && display->buswidth == 8) {
+		par->fbtftops.write_register = fbtft_write_reg8_bus8;
+	} else
+	if (display->regwidth == 8 && display->buswidth == 9 && par->spi) {
+		par->fbtftops.write_register = fbtft_write_reg8_bus9;
+	} else if (display->regwidth == 16 && display->buswidth == 8) {
+		par->fbtftops.write_register = fbtft_write_reg16_bus8;
+	} else if (display->regwidth == 16 && display->buswidth == 16) {
+		par->fbtftops.write_register = fbtft_write_reg16_bus16;
+	} else {
+		dev_warn(dev,
+			"no default functions for regwidth=%d and buswidth=%d\n",
+			display->regwidth, display->buswidth);
+	}
+
+	/* write_vmem() functions */
+	if (display->buswidth == 8)
+		par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
+	else if (display->buswidth == 9)
+		par->fbtftops.write_vmem = fbtft_write_vmem16_bus9;
+	else if (display->buswidth == 16)
+		par->fbtftops.write_vmem = fbtft_write_vmem16_bus16;
+
+	/* GPIO write() functions */
+	if (par->pdev) {
+		if (display->buswidth == 8)
+			par->fbtftops.write = fbtft_write_gpio8_wr;
+		else if (display->buswidth == 16)
+			par->fbtftops.write = fbtft_write_gpio16_wr;
+	}
+
+	/* 9-bit SPI setup */
+	if (par->spi && display->buswidth == 9) {
+		par->spi->bits_per_word = 9;
+		ret = par->spi->master->setup(par->spi);
+		if (ret) {
+			dev_warn(&par->spi->dev,
+				"9-bit SPI not available, emulating using 8-bit.\n");
+			par->spi->bits_per_word = 8;
+			ret = par->spi->master->setup(par->spi);
+			if (ret)
+				goto out_release;
+			/* allocate buffer with room for dc bits */
+			par->extra = devm_kzalloc(par->info->device,
+				par->txbuf.len + (par->txbuf.len / 8) + 8,
+				GFP_KERNEL);
+			if (!par->extra) {
+				ret = -ENOMEM;
+				goto out_release;
+			}
+			par->fbtftops.write = fbtft_write_spi_emulate_9;
+		}
+	}
+
+	if (!par->fbtftops.verify_gpios)
+		par->fbtftops.verify_gpios = fbtft_verify_gpios;
+
+	/* make sure we still use the driver provided functions */
+	fbtft_merge_fbtftops(&par->fbtftops, &display->fbtftops);
+
+	/* use init_sequence if provided */
+	if (par->init_sequence)
+		par->fbtftops.init_display = fbtft_init_display;
+
+	/* use platform_data provided functions above all */
+	fbtft_merge_fbtftops(&par->fbtftops, &pdata->display.fbtftops);
+
+	ret = fbtft_register_framebuffer(info);
+	if (ret < 0)
+		goto out_release;
+
+	return 0;
+
+out_release:
+	fbtft_framebuffer_release(info);
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_probe_common);
+
+/**
+ * fbtft_remove_common() - Generic device remove() helper function
+ * @dev: Device
+ * @info: Framebuffer
+ *
+ * Unregisters and releases the framebuffer
+ *
+ * Return: 0 if successful, negative if error
+ */
+int fbtft_remove_common(struct device *dev, struct fb_info *info)
+{
+	struct fbtft_par *par;
+
+	if (!info)
+		return -EINVAL;
+	par = info->par;
+	if (par)
+		fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par,
+			"%s()\n", __func__);
+	fbtft_unregister_framebuffer(info);
+	fbtft_framebuffer_release(info);
+
+	return 0;
+}
+EXPORT_SYMBOL(fbtft_remove_common);
+
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fbtft_device.c linux-rpi/drivers/staging/fbtft/fbtft_device.c
--- linux-3.18.10/drivers/staging/fbtft/fbtft_device.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fbtft_device.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,1444 @@
+/*
+ *
+ * Copyright (C) 2013, Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fbtft_device"
+
+#define MAX_GPIOS 32
+
+struct spi_device *spi_device;
+struct platform_device *p_device;
+
+static char *name;
+module_param(name, charp, 0);
+MODULE_PARM_DESC(name, "Devicename (required). " \
+"name=list => list all supported devices.");
+
+static unsigned rotate;
+module_param(rotate, uint, 0);
+MODULE_PARM_DESC(rotate,
+"Angle to rotate display counter clockwise: 0, 90, 180, 270");
+
+static unsigned busnum;
+module_param(busnum, uint, 0);
+MODULE_PARM_DESC(busnum, "SPI bus number (default=0)");
+
+static unsigned cs;
+module_param(cs, uint, 0);
+MODULE_PARM_DESC(cs, "SPI chip select (default=0)");
+
+static unsigned speed;
+module_param(speed, uint, 0);
+MODULE_PARM_DESC(speed, "SPI speed (override device default)");
+
+static int mode = -1;
+module_param(mode, int, 0);
+MODULE_PARM_DESC(mode, "SPI mode (override device default)");
+
+static char *gpios;
+module_param(gpios, charp, 0);
+MODULE_PARM_DESC(gpios,
+"List of gpios. Comma separated with the form: reset:23,dc:24 " \
+"(when overriding the default, all gpios must be specified)");
+
+static unsigned fps;
+module_param(fps, uint, 0);
+MODULE_PARM_DESC(fps, "Frames per second (override driver default)");
+
+static char *gamma;
+module_param(gamma, charp, 0);
+MODULE_PARM_DESC(gamma,
+"String representation of Gamma Curve(s). Driver specific.");
+
+static int txbuflen;
+module_param(txbuflen, int, 0);
+MODULE_PARM_DESC(txbuflen, "txbuflen (override driver default)");
+
+static int bgr = -1;
+module_param(bgr, int, 0);
+MODULE_PARM_DESC(bgr,
+"BGR bit (supported by some drivers).");
+
+static unsigned startbyte;
+module_param(startbyte, uint, 0);
+MODULE_PARM_DESC(startbyte, "Sets the Start byte used by some SPI displays.");
+
+static bool custom;
+module_param(custom, bool, 0);
+MODULE_PARM_DESC(custom, "Add a custom display device. " \
+"Use speed= argument to make it a SPI device, else platform_device");
+
+static unsigned width;
+module_param(width, uint, 0);
+MODULE_PARM_DESC(width, "Display width, used with the custom argument");
+
+static unsigned height;
+module_param(height, uint, 0);
+MODULE_PARM_DESC(height, "Display height, used with the custom argument");
+
+static unsigned buswidth = 8;
+module_param(buswidth, uint, 0);
+MODULE_PARM_DESC(buswidth, "Display bus width, used with the custom argument");
+
+static int init[FBTFT_MAX_INIT_SEQUENCE];
+static int init_num;
+module_param_array(init, int, &init_num, 0);
+MODULE_PARM_DESC(init, "Init sequence, used with the custom argument");
+
+static unsigned long debug;
+module_param(debug, ulong , 0);
+MODULE_PARM_DESC(debug,
+"level: 0-7 (the remaining 29 bits is for advanced usage)");
+
+static unsigned verbose = 3;
+module_param(verbose, uint, 0);
+MODULE_PARM_DESC(verbose,
+"0 silent, >0 show gpios, >1 show devices, >2 show devices before (default=3)");
+
+
+struct fbtft_device_display {
+	char *name;
+	struct spi_board_info *spi;
+	struct platform_device *pdev;
+};
+
+static void fbtft_device_pdev_release(struct device *dev);
+
+static int write_gpio16_wr_slow(struct fbtft_par *par, void *buf, size_t len);
+static void adafruit18_green_tab_set_addr_win(struct fbtft_par *par,
+	int xs, int ys, int xe, int ye);
+
+#define ADAFRUIT18_GAMMA \
+		"02 1c 07 12 37 32 29 2d 29 25 2B 39 00 01 03 10\n" \
+		"03 1d 07 06 2E 2C 29 2D 2E 2E 37 3F 00 00 02 10"
+
+static int hy28b_init_sequence[] = {
+	-1,0x00e7,0x0010,-1,0x0000,0x0001,-1,0x0001,0x0100,-1,0x0002,0x0700,
+	-1,0x0003,0x1030,-1,0x0004,0x0000,-1,0x0008,0x0207,-1,0x0009,0x0000,
+	-1,0x000a,0x0000,-1,0x000c,0x0001,-1,0x000d,0x0000,-1,0x000f,0x0000,
+	-1,0x0010,0x0000,-1,0x0011,0x0007,-1,0x0012,0x0000,-1,0x0013,0x0000,
+	-2,50,-1,0x0010,0x1590,-1,0x0011,0x0227,-2,50,-1,0x0012,0x009c,-2,50,
+	-1,0x0013,0x1900,-1,0x0029,0x0023,-1,0x002b,0x000e,-2,50,
+	-1,0x0020,0x0000,-1,0x0021,0x0000,-2,50,-1,0x0050,0x0000,
+	-1,0x0051,0x00ef,-1,0x0052,0x0000,-1,0x0053,0x013f,-1,0x0060,0xa700,
+	-1,0x0061,0x0001,-1,0x006a,0x0000,-1,0x0080,0x0000,-1,0x0081,0x0000,
+	-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000,-1,0x0085,0x0000,
+	-1,0x0090,0x0010,-1,0x0092,0x0000,-1,0x0093,0x0003,-1,0x0095,0x0110,
+	-1,0x0097,0x0000,-1,0x0098,0x0000,-1,0x0007,0x0133,-1,0x0020,0x0000,
+	-1,0x0021,0x0000,-2,100,-3 };
+
+#define HY28B_GAMMA \
+	"04 1F 4 7 7 0 7 7 6 0\n" \
+	"0F 00 1 7 4 0 0 0 6 7"
+
+static int pitft_init_sequence[] = {
+	-1,0x01,-2,5,-1,0x28,-1,0xEF,0x03,0x80,0x02,-1,0xCF,0x00,0xC1,0x30,
+	-1,0xED,0x64,0x03,0x12,0x81,-1,0xE8,0x85,0x00,0x78,
+	-1,0xCB,0x39,0x2C,0x00,0x34,0x02,-1,0xF7,0x20,-1,0xEA,0x00,0x00,
+	-1,0xC0,0x23,-1,0xC1,0x10,-1,0xC5,0x3e,0x28,-1,0xC7,0x86,-1,0x3A,0x55,
+	-1,0xB1,0x00,0x18,-1,0xB6,0x08,0x82,0x27,-1,0xF2,0x00,-1,0x26,0x01,
+	-1,0xE0,0x0F,0x31,0x2B,0x0C,0x0E,0x08,0x4E,0xF1,0x37,0x07,0x10,0x03,
+	0x0E,0x09,0x00,-1,0xE1,0x00,0x0E,0x14,0x03,0x11,0x07,0x31,0xC1,0x48,
+	0x08,0x0F,0x0C,0x31,0x36,0x0F,-1,0x11,-2,100,-1,0x29,-2,20,-3 };
+
+static int waveshare32b_init_sequence[] = {
+	-1,0xCB,0x39,0x2C,0x00,0x34,0x02,-1,0xCF,0x00,0xC1,0x30,
+	-1,0xE8,0x85,0x00,0x78,-1,0xEA,0x00,0x00,-1,0xED,0x64,0x03,0x12,0x81,
+	-1,0xF7,0x20,-1,0xC0,0x23,-1,0xC1,0x10,-1,0xC5,0x3e,0x28,-1,0xC7,0x86,
+	-1,0x36,0x28,-1,0x3A,0x55,-1,0xB1,0x00,0x18,-1,0xB6,0x08,0x82,0x27,
+	-1,0xF2,0x00,-1,0x26,0x01,
+	-1,0xE0,0x0F,0x31,0x2B,0x0C,0x0E,0x08,0x4E,0xF1,0x37,0x07,0x10,0x03,0x0E,0x09,0x00,
+	-1,0xE1,0x00,0x0E,0x14,0x03,0x11,0x07,0x31,0xC1,0x48,0x08,0x0F,0x0C,0x31,0x36,0x0F,
+	-1,0x11,-2,120,-1,0x29,-1,0x2c,-3 };
+
+/* Supported displays in alphabetical order */
+static struct fbtft_device_display displays[] = {
+	{
+		.name = "adafruit18",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_st7735r",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+				.gamma = ADAFRUIT18_GAMMA,
+			}
+		}
+	}, {
+		.name = "adafruit18_green",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_st7735r",
+			.max_speed_hz = 4000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.fbtftops.set_addr_win = \
+					    adafruit18_green_tab_set_addr_win,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+				.gamma = ADAFRUIT18_GAMMA,
+			}
+		}
+	}, {
+		.name = "adafruit22",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_hx8340bn",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 9,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "adafruit22a",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9340",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "adafruit28",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9341",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "adafruit13m",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1306",
+			.max_speed_hz = 16000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "agm1264k-fl",
+		.pdev = &(struct platform_device) {
+			.name = "fb_agm1264k-fl",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = FBTFT_ONBOARD_BACKLIGHT,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+			}
+		}
+	}, {
+		.name = "dogs102",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_uc1701",
+			.max_speed_hz = 8000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 13 },
+					{ "dc", 6 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "er_tftm050_2",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ra8875",
+			.max_speed_hz = 5000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.width = 480,
+					.height = 272,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "er_tftm070_5",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ra8875",
+			.max_speed_hz = 5000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.width = 800,
+					.height = 480,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "flexfb",
+		.spi = &(struct spi_board_info) {
+			.modalias = "flexfb",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "flexpfb",
+		.pdev = &(struct platform_device) {
+			.name = "flexpfb",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 17 },
+					{ "dc", 1 },
+					{ "wr", 0 },
+					{ "cs", 21 },
+					{ "db00", 9 },
+					{ "db01", 11 },
+					{ "db02", 18 },
+					{ "db03", 23 },
+					{ "db04", 24 },
+					{ "db05", 25 },
+					{ "db06", 8 },
+					{ "db07", 7 },
+					{ "led", 4 },
+					{},
+				},
+			},
+			}
+		}
+	}, {
+		.name = "freetronicsoled128",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1351",
+			.max_speed_hz = 20000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = FBTFT_ONBOARD_BACKLIGHT,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "hx8353d",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_hx8353d",
+			.max_speed_hz = 16000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "hy28a",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9320",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.startbyte = 0b01110000,
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "hy28b",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9325",
+			.max_speed_hz = 48000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.init_sequence = hy28b_init_sequence,
+				},
+				.startbyte = 0b01110000,
+				.bgr = true,
+				.fps= 50,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "led", 18 },
+					{},
+				},
+				.gamma = HY28B_GAMMA,
+			}
+		}
+	}, {
+		.name = "ili9481",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9481",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.regwidth = 16,
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 22 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "itdb24",
+		.pdev = &(struct platform_device) {
+			.name = "fb_s6d1121",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = false,
+				.gpios = (const struct fbtft_gpio []) {
+					/* Wiring for LCD adapter kit */
+					{ "reset", 7 },
+					{ "dc", 0 }, 	/* rev 2: 2 */
+					{ "wr", 1 }, 	/* rev 2: 3 */
+					{ "cs", 8 },
+					{ "db00", 17 },
+					{ "db01", 18 },
+					{ "db02", 21 }, /* rev 2: 27 */
+					{ "db03", 22 },
+					{ "db04", 23 },
+					{ "db05", 24 },
+					{ "db06", 25 },
+					{ "db07", 4 },
+					{}
+				},
+			},
+			}
+		}
+	}, {
+		.name = "itdb28",
+		.pdev = &(struct platform_device) {
+			.name = "fb_ili9325",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+			}
+		}
+	}, {
+		.name = "itdb28_spi",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9325",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "mi0283qt-2",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_hx8347d",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.startbyte = 0b01110000,
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "mi0283qt-9a",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9341",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 9,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "mi0283qt-v2",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_watterott",
+			.max_speed_hz = 4000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "nokia3310",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_pcd8544",
+			.max_speed_hz = 400000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "nokia3310a",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_tls8204",
+			.max_speed_hz = 1000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "piscreen",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9486",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.regwidth = 16,
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 22 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "pitft",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9340",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.chip_select = 0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.init_sequence = pitft_init_sequence,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "pioled",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1351",
+			.max_speed_hz = 20000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+				.gamma =	"0 2 2 2 2 2 2 2 " \
+						"2 2 2 2 2 2 2 2 " \
+						"2 2 2 2 2 2 2 2 " \
+						"2 2 2 2 2 2 2 3 " \
+						"3 3 3 3 3 3 3 3 " \
+						"3 3 3 3 3 3 3 3 " \
+						"3 3 3 4 4 4 4 4 " \
+						"4 4 4 4 4 4 4"
+			}
+		}
+	}, {
+		.name = "rpi-display",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9341",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 23 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "s6d02a1",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_s6d02a1",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "sainsmart18",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_st7735r",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "sainsmart32",
+		.pdev = &(struct platform_device) {
+			.name = "fb_ssd1289",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 16,
+					.txbuflen = -2, /* disable buffer */
+					.backlight = 1,
+					.fbtftops.write = write_gpio16_wr_slow,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+		},
+		}
+	}, {
+		.name = "sainsmart32_fast",
+		.pdev = &(struct platform_device) {
+			.name = "fb_ssd1289",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 16,
+					.txbuflen = -2, /* disable buffer */
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+		},
+		}
+	}, {
+		.name = "sainsmart32_latched",
+		.pdev = &(struct platform_device) {
+			.name = "fb_ssd1289",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 16,
+					.txbuflen = -2, /* disable buffer */
+					.backlight = 1,
+					.fbtftops.write = \
+						fbtft_write_gpio16_wr_latched,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+		},
+		}
+	}, {
+		.name = "sainsmart32_spi",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1289",
+			.max_speed_hz = 16000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "spidev",
+		.spi = &(struct spi_board_info) {
+			.modalias = "spidev",
+			.max_speed_hz = 500000,
+			.bus_num = 0,
+			.chip_select = 0,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "ssd1331",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1331",
+			.max_speed_hz = 20000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "tinylcd35",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_tinylcd",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "tm022hdh26",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9341",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "tontec35_9481", /* boards before 02 July 2014 */
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9481",
+			.max_speed_hz = 128000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 15 },
+					{ "dc", 25 },
+					{ "led_", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "tontec35_9486", /* boards after 02 July 2014 */
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9486",
+			.max_speed_hz = 128000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 15 },
+					{ "dc", 25 },
+					{ "led_", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "upd161704",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_upd161704",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "waveshare32b",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9340",
+			.max_speed_hz = 48000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.init_sequence = waveshare32b_init_sequence,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 27 },
+					{ "dc", 22 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "waveshare22",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_bd663474",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		/* This should be the last item.
+		   Used with the custom argument */
+		.name = "",
+		.spi = &(struct spi_board_info) {
+			.modalias = "",
+			.max_speed_hz = 0,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			}
+		},
+		.pdev = &(struct platform_device) {
+			.name = "",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+		},
+		},
+	}
+};
+
+static int write_gpio16_wr_slow(struct fbtft_par *par, void *buf, size_t len)
+{
+	u16 data;
+	int i;
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+	static u16 prev_data;
+#endif
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	while (len) {
+		data = *(u16 *) buf;
+
+		/* Start writing by pulling down /WR */
+		gpio_set_value(par->gpio.wr, 0);
+
+		/* Set data */
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		if (data == prev_data) {
+			gpio_set_value(par->gpio.wr, 0); /* used as delay */
+		} else {
+			for (i = 0; i < 16; i++) {
+				if ((data & 1) != (prev_data & 1))
+					gpio_set_value(par->gpio.db[i],
+								(data & 1));
+				data >>= 1;
+				prev_data >>= 1;
+			}
+		}
+#else
+		for (i = 0; i < 16; i++) {
+			gpio_set_value(par->gpio.db[i], (data & 1));
+			data >>= 1;
+		}
+#endif
+
+		/* Pullup /WR */
+		gpio_set_value(par->gpio.wr, 1);
+
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		prev_data = *(u16 *) buf;
+#endif
+		buf += 2;
+		len -= 2;
+	}
+
+	return 0;
+}
+
+static void adafruit18_green_tab_set_addr_win(struct fbtft_par *par,
+						int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	write_reg(par, 0x2A, 0, xs + 2, 0, xe + 2);
+	write_reg(par, 0x2B, 0, ys + 1, 0, ye + 1);
+	write_reg(par, 0x2C);
+}
+
+/* used if gpios parameter is present */
+static struct fbtft_gpio fbtft_device_param_gpios[MAX_GPIOS+1] = { };
+
+static void fbtft_device_pdev_release(struct device *dev)
+{
+/* Needed to silence this message:
+Device 'xxx' does not have a release() function, it is broken and must be fixed
+*/
+}
+
+static int spi_device_found(struct device *dev, void *data)
+{
+	struct spi_device *spi = container_of(dev, struct spi_device, dev);
+
+	pr_info(DRVNAME":      %s %s %dkHz %d bits mode=0x%02X\n",
+		spi->modalias, dev_name(dev), spi->max_speed_hz/1000,
+		spi->bits_per_word, spi->mode);
+
+	return 0;
+}
+
+static void pr_spi_devices(void)
+{
+	pr_info(DRVNAME":  SPI devices registered:\n");
+	bus_for_each_dev(&spi_bus_type, NULL, NULL, spi_device_found);
+}
+
+static int p_device_found(struct device *dev, void *data)
+{
+	struct platform_device
+	*pdev = container_of(dev, struct platform_device, dev);
+
+	if (strstr(pdev->name, "fb"))
+		pr_info(DRVNAME":      %s id=%d pdata? %s\n",
+				pdev->name, pdev->id,
+				pdev->dev.platform_data ? "yes" : "no");
+
+	return 0;
+}
+
+static void pr_p_devices(void)
+{
+	pr_info(DRVNAME":  'fb' Platform devices registered:\n");
+	bus_for_each_dev(&platform_bus_type, NULL, NULL, p_device_found);
+}
+
+#ifdef MODULE
+static void fbtft_device_spi_delete(struct spi_master *master, unsigned cs)
+{
+	struct device *dev;
+	char str[32];
+
+	snprintf(str, sizeof(str), "%s.%u", dev_name(&master->dev), cs);
+
+	dev = bus_find_device_by_name(&spi_bus_type, NULL, str);
+	if (dev) {
+		if (verbose)
+			pr_info(DRVNAME": Deleting %s\n", str);
+		device_del(dev);
+	}
+}
+
+static int fbtft_device_spi_device_register(struct spi_board_info *spi)
+{
+	struct spi_master *master;
+
+	master = spi_busnum_to_master(spi->bus_num);
+	if (!master) {
+		pr_err(DRVNAME ":  spi_busnum_to_master(%d) returned NULL\n",
+								spi->bus_num);
+		return -EINVAL;
+	}
+	/* make sure it's available */
+	fbtft_device_spi_delete(master, spi->chip_select);
+	spi_device = spi_new_device(master, spi);
+	put_device(&master->dev);
+	if (!spi_device) {
+		pr_err(DRVNAME ":    spi_new_device() returned NULL\n");
+		return -EPERM;
+	}
+	return 0;
+}
+#else
+static int fbtft_device_spi_device_register(struct spi_board_info *spi)
+{
+	return spi_register_board_info(spi, 1);
+}
+#endif
+
+static int __init fbtft_device_init(void)
+{
+	struct spi_board_info *spi = NULL;
+	struct fbtft_platform_data *pdata;
+	const struct fbtft_gpio *gpio = NULL;
+	char *p_gpio, *p_name, *p_num;
+	bool found = false;
+	int i = 0;
+	long val;
+	int ret = 0;
+
+	pr_debug("\n\n"DRVNAME": init\n");
+
+	if (name == NULL) {
+#ifdef MODULE
+		pr_err(DRVNAME":  missing module parameter: 'name'\n");
+		return -EINVAL;
+#else
+		return 0;
+#endif
+	}
+
+	if (init_num > FBTFT_MAX_INIT_SEQUENCE) {
+		pr_err(DRVNAME \
+			":  init parameter: exceeded max array size: %d\n",
+			FBTFT_MAX_INIT_SEQUENCE);
+		return -EINVAL;
+	}
+
+	/* parse module parameter: gpios */
+	while ((p_gpio = strsep(&gpios, ","))) {
+		if (strchr(p_gpio, ':') == NULL) {
+			pr_err(DRVNAME \
+				":  error: missing ':' in gpios parameter: %s\n",
+				p_gpio);
+			return -EINVAL;
+		}
+		p_num = p_gpio;
+		p_name = strsep(&p_num, ":");
+		if (p_name == NULL || p_num == NULL) {
+			pr_err(DRVNAME \
+				":  something bad happened parsing gpios parameter: %s\n",
+				p_gpio);
+			return -EINVAL;
+		}
+		ret = kstrtol(p_num, 10, &val);
+		if (ret) {
+			pr_err(DRVNAME \
+				":  could not parse number in gpios parameter: %s:%s\n",
+				p_name, p_num);
+			return -EINVAL;
+		}
+		strcpy(fbtft_device_param_gpios[i].name, p_name);
+		fbtft_device_param_gpios[i++].gpio = (int) val;
+		if (i == MAX_GPIOS) {
+			pr_err(DRVNAME \
+				":  gpios parameter: exceeded max array size: %d\n",
+				MAX_GPIOS);
+			return -EINVAL;
+		}
+	}
+	if (fbtft_device_param_gpios[0].name[0])
+		gpio = fbtft_device_param_gpios;
+
+	if (verbose > 2)
+		pr_spi_devices(); /* print list of registered SPI devices */
+
+	if (verbose > 2)
+		pr_p_devices(); /* print list of 'fb' platform devices */
+
+	pr_debug(DRVNAME":  name='%s', busnum=%d, cs=%d\n", name, busnum, cs);
+
+	if (rotate > 0 && rotate < 4) {
+		rotate = (4 - rotate) * 90;
+		pr_warn("argument 'rotate' should be an angle. Values 1-3 is deprecated. Setting it to %d.\n",
+			rotate);
+	}
+	if (rotate != 0 && rotate != 90 && rotate != 180 && rotate != 270) {
+		pr_warn("argument 'rotate' illegal value: %d. Setting it to 0.\n",
+			rotate);
+		rotate = 0;
+	}
+
+	/* name=list lists all supported displays */
+	if (strncmp(name, "list", 32) == 0) {
+		pr_info(DRVNAME":  Supported displays:\n");
+
+		for (i = 0; i < ARRAY_SIZE(displays); i++)
+			pr_info(DRVNAME":      %s\n", displays[i].name);
+		return -ECANCELED;
+	}
+
+	if (custom) {
+		i = ARRAY_SIZE(displays) - 1;
+		displays[i].name = name;
+		if (speed == 0) {
+			displays[i].pdev->name = name;
+			displays[i].spi = NULL;
+		} else {
+			strncpy(displays[i].spi->modalias, name, SPI_NAME_SIZE);
+			displays[i].pdev = NULL;
+		}
+	}
+
+	for (i = 0; i < ARRAY_SIZE(displays); i++) {
+		if (strncmp(name, displays[i].name, 32) == 0) {
+			if (displays[i].spi) {
+				spi = displays[i].spi;
+				spi->chip_select = cs;
+				spi->bus_num = busnum;
+				if (speed)
+					spi->max_speed_hz = speed;
+				if (mode != -1)
+					spi->mode = mode;
+				pdata = (void *)spi->platform_data;
+			} else if (displays[i].pdev) {
+				p_device = displays[i].pdev;
+				pdata = p_device->dev.platform_data;
+			} else {
+				pr_err(DRVNAME": broken displays array\n");
+				return -EINVAL;
+			}
+
+			pdata->rotate = rotate;
+			if (bgr == 0)
+				pdata->bgr = false;
+			else if (bgr == 1)
+				pdata->bgr = true;
+			if (startbyte)
+				pdata->startbyte = startbyte;
+			if (gamma)
+				pdata->gamma = gamma;
+			pdata->display.debug = debug;
+			if (fps)
+				pdata->fps = fps;
+			if (txbuflen)
+				pdata->txbuflen = txbuflen;
+			if (init_num)
+				pdata->display.init_sequence = init;
+			if (gpio)
+				pdata->gpios = gpio;
+			if (custom) {
+				pdata->display.width = width;
+				pdata->display.height = height;
+				pdata->display.buswidth = buswidth;
+				pdata->display.backlight = 1;
+			}
+
+			if (displays[i].spi) {
+				ret = fbtft_device_spi_device_register(spi);
+				if (ret) {
+					pr_err(DRVNAME \
+						": failed to register SPI device\n");
+					return ret;
+				}
+				found = true;
+				break;
+			} else {
+				ret = platform_device_register(p_device);
+				if (ret < 0) {
+					pr_err(DRVNAME \
+						":    platform_device_register() returned %d\n",
+						ret);
+					return ret;
+				}
+				found = true;
+				break;
+			}
+		}
+	}
+
+	if (!found) {
+		pr_err(DRVNAME":  display not supported: '%s'\n", name);
+		return -EINVAL;
+	}
+
+	if (verbose && pdata && pdata->gpios) {
+		gpio = pdata->gpios;
+		pr_info(DRVNAME":  GPIOS used by '%s':\n", name);
+		found = false;
+		while (verbose && gpio->name[0]) {
+			pr_info(DRVNAME":    '%s' = GPIO%d\n",
+				gpio->name, gpio->gpio);
+			gpio++;
+			found = true;
+		}
+		if (!found)
+			pr_info(DRVNAME":    (none)\n");
+	}
+
+	if (spi_device && (verbose > 1))
+		pr_spi_devices();
+	if (p_device && (verbose > 1))
+		pr_p_devices();
+
+	return 0;
+}
+
+static void __exit fbtft_device_exit(void)
+{
+	pr_debug(DRVNAME" - exit\n");
+
+	if (spi_device) {
+		device_del(&spi_device->dev);
+		kfree(spi_device);
+	}
+
+	if (p_device)
+		platform_device_unregister(p_device);
+
+}
+
+arch_initcall(fbtft_device_init);
+module_exit(fbtft_device_exit);
+
+MODULE_DESCRIPTION("Add a FBTFT device.");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fbtft.h linux-rpi/drivers/staging/fbtft/fbtft.h
--- linux-3.18.10/drivers/staging/fbtft/fbtft.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fbtft.h	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,447 @@
+/*
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __LINUX_FBTFT_H
+#define __LINUX_FBTFT_H
+
+#include <linux/fb.h>
+#include <linux/spinlock.h>
+#include <linux/spi/spi.h>
+#include <linux/platform_device.h>
+
+
+#define FBTFT_NOP		0x00
+#define FBTFT_SWRESET	0x01
+#define FBTFT_RDDID		0x04
+#define FBTFT_RDDST		0x09
+#define FBTFT_CASET		0x2A
+#define FBTFT_RASET		0x2B
+#define FBTFT_RAMWR		0x2C
+
+#define FBTFT_ONBOARD_BACKLIGHT 2
+
+#define FBTFT_GPIO_NO_MATCH		0xFFFF
+#define FBTFT_GPIO_NAME_SIZE	32
+#define FBTFT_MAX_INIT_SEQUENCE      512
+#define FBTFT_GAMMA_MAX_VALUES_TOTAL 128
+
+#define FBTFT_OF_INIT_CMD	BIT(24)
+#define FBTFT_OF_INIT_DELAY	BIT(25)
+
+/**
+ * struct fbtft_gpio - Structure that holds one pinname to gpio mapping
+ * @name: pinname (reset, dc, etc.)
+ * @gpio: GPIO number
+ *
+ */
+struct fbtft_gpio {
+	char name[FBTFT_GPIO_NAME_SIZE];
+	unsigned gpio;
+};
+
+struct fbtft_par;
+
+/**
+ * struct fbtft_ops - FBTFT operations structure
+ * @write: Writes to interface bus
+ * @read: Reads from interface bus
+ * @write_vmem: Writes video memory to display
+ * @write_reg: Writes to controller register
+ * @set_addr_win: Set the GRAM update window
+ * @reset: Reset the LCD controller
+ * @mkdirty: Marks display lines for update
+ * @update_display: Updates the display
+ * @init_display: Initializes the display
+ * @blank: Blank the display (optional)
+ * @request_gpios_match: Do pinname to gpio matching
+ * @request_gpios: Request gpios from the kernel
+ * @free_gpios: Free previously requested gpios
+ * @verify_gpios: Verify that necessary gpios is present (optional)
+ * @register_backlight: Used to register backlight device (optional)
+ * @unregister_backlight: Unregister backlight device (optional)
+ * @set_var: Configure LCD with values from variables like @rotate and @bgr
+ *           (optional)
+ * @set_gamma: Set Gamma curve (optional)
+ *
+ * Most of these operations have default functions assigned to them in
+ *     fbtft_framebuffer_alloc()
+ */
+struct fbtft_ops {
+	int (*write)(struct fbtft_par *par, void *buf, size_t len);
+	int (*read)(struct fbtft_par *par, void *buf, size_t len);
+	int (*write_vmem)(struct fbtft_par *par, size_t offset, size_t len);
+	void (*write_register)(struct fbtft_par *par, int len, ...);
+
+	void (*set_addr_win)(struct fbtft_par *par,
+		int xs, int ys, int xe, int ye);
+	void (*reset)(struct fbtft_par *par);
+	void (*mkdirty)(struct fb_info *info, int from, int to);
+	void (*update_display)(struct fbtft_par *par,
+				unsigned start_line, unsigned end_line);
+	int (*init_display)(struct fbtft_par *par);
+	int (*blank)(struct fbtft_par *par, bool on);
+
+	unsigned long (*request_gpios_match)(struct fbtft_par *par,
+		const struct fbtft_gpio *gpio);
+	int (*request_gpios)(struct fbtft_par *par);
+	int (*verify_gpios)(struct fbtft_par *par);
+
+	void (*register_backlight)(struct fbtft_par *par);
+	void (*unregister_backlight)(struct fbtft_par *par);
+
+	int (*set_var)(struct fbtft_par *par);
+	int (*set_gamma)(struct fbtft_par *par, unsigned long *curves);
+};
+
+/**
+ * struct fbtft_display - Describes the display properties
+ * @width: Width of display in pixels
+ * @height: Height of display in pixels
+ * @regwidth: LCD Controller Register width in bits
+ * @buswidth: Display interface bus width in bits
+ * @backlight: Backlight type.
+ * @fbtftops: FBTFT operations provided by driver or device (platform_data)
+ * @bpp: Bits per pixel
+ * @fps: Frames per second
+ * @txbuflen: Size of transmit buffer
+ * @init_sequence: Pointer to LCD initialization array
+ * @gamma: String representation of Gamma curve(s)
+ * @gamma_num: Number of Gamma curves
+ * @gamma_len: Number of values per Gamma curve
+ * @debug: Initial debug value
+ *
+ * This structure is not stored by FBTFT except for init_sequence.
+ */
+struct fbtft_display {
+	unsigned width;
+	unsigned height;
+	unsigned regwidth;
+	unsigned buswidth;
+	unsigned backlight;
+	struct fbtft_ops fbtftops;
+	unsigned bpp;
+	unsigned fps;
+	int txbuflen;
+	int *init_sequence;
+	char *gamma;
+	int gamma_num;
+	int gamma_len;
+	unsigned long debug;
+};
+
+/**
+ * struct fbtft_platform_data - Passes display specific data to the driver
+ * @display: Display properties
+ * @gpios: Pointer to an array of piname to gpio mappings
+ * @rotate: Display rotation angle
+ * @bgr: LCD Controller BGR bit
+ * @fps: Frames per second (this will go away, use @fps in @fbtft_display)
+ * @txbuflen: Size of transmit buffer
+ * @startbyte: When set, enables use of Startbyte in transfers
+ * @gamma: String representation of Gamma curve(s)
+ * @extra: A way to pass extra info
+ */
+struct fbtft_platform_data {
+	struct fbtft_display display;
+	const struct fbtft_gpio *gpios;
+	unsigned rotate;
+	bool bgr;
+	unsigned fps;
+	int txbuflen;
+	u8 startbyte;
+	char *gamma;
+	void *extra;
+};
+
+/**
+ * struct fbtft_par - Main FBTFT data structure
+ *
+ * This structure holds all relevant data to operate the display
+ *
+ * See sourcefile for documentation since nested structs is not
+ * supported by kernel-doc.
+ *
+ */
+/* @spi: Set if it is a SPI device
+ * @pdev: Set if it is a platform device
+ * @info: Pointer to framebuffer fb_info structure
+ * @pdata: Pointer to platform data
+ * @ssbuf: Not used
+ * @pseudo_palette: Used by fb_set_colreg()
+ * @txbuf.buf: Transmit buffer
+ * @txbuf.len: Transmit buffer length
+ * @buf: Small buffer used when writing init data over SPI
+ * @startbyte: Used by some controllers when in SPI mode.
+ *             Format: 6 bit Device id + RS bit + RW bit
+ * @fbtftops: FBTFT operations provided by driver or device (platform_data)
+ * @dirty_lock: Protects dirty_lines_start and dirty_lines_end
+ * @dirty_lines_start: Where to begin updating display
+ * @dirty_lines_end: Where to end updating display
+ * @gpio.reset: GPIO used to reset display
+ * @gpio.dc: Data/Command signal, also known as RS
+ * @gpio.rd: Read latching signal
+ * @gpio.wr: Write latching signal
+ * @gpio.latch: Bus latch signal, eg. 16->8 bit bus latch
+ * @gpio.cs: LCD Chip Select with parallel interface bus
+ * @gpio.db[16]: Parallel databus
+ * @gpio.led[16]: Led control signals
+ * @gpio.aux[16]: Auxillary signals, not used by core
+ * @init_sequence: Pointer to LCD initialization array
+ * @gamma.lock: Mutex for Gamma curve locking
+ * @gamma.curves: Pointer to Gamma curve array
+ * @gamma.num_values: Number of values per Gamma curve
+ * @gamma.num_curves: Number of Gamma curves
+ * @debug: Pointer to debug value
+ * @current_debug:
+ * @first_update_done: Used to only time the first display update
+ * @update_time: Used to calculate 'fps' in debug output
+ * @bgr: BGR mode/\n
+ * @extra: Extra info needed by driver
+ */
+struct fbtft_par {
+	struct spi_device *spi;
+	struct platform_device *pdev;
+	struct fb_info *info;
+	struct fbtft_platform_data *pdata;
+	u16 *ssbuf;
+	u32 pseudo_palette[16];
+	struct {
+		void *buf;
+		dma_addr_t dma;
+		size_t len;
+	} txbuf;
+	u8 *buf;
+	u8 startbyte;
+	struct fbtft_ops fbtftops;
+	spinlock_t dirty_lock;
+	unsigned dirty_lines_start;
+	unsigned dirty_lines_end;
+	struct {
+		int reset;
+		int dc;
+		int rd;
+		int wr;
+		int latch;
+		int cs;
+		int db[16];
+		int led[16];
+		int aux[16];
+	} gpio;
+	int *init_sequence;
+	struct {
+		struct mutex lock;
+		unsigned long *curves;
+		int num_values;
+		int num_curves;
+	} gamma;
+	unsigned long debug;
+	bool first_update_done;
+	struct timespec update_time;
+	bool bgr;
+	void *extra;
+};
+
+#define NUMARGS(...)  (sizeof((int[]){__VA_ARGS__})/sizeof(int))
+
+#define write_reg(par, ...)                                              \
+do {                                                                     \
+	par->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__); \
+} while (0)
+
+/* fbtft-core.c */
+extern void fbtft_dbg_hex(const struct device *dev,
+	int groupsize, void *buf, size_t len, const char *fmt, ...);
+extern struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
+	struct device *dev);
+extern void fbtft_framebuffer_release(struct fb_info *info);
+extern int fbtft_register_framebuffer(struct fb_info *fb_info);
+extern int fbtft_unregister_framebuffer(struct fb_info *fb_info);
+extern void fbtft_register_backlight(struct fbtft_par *par);
+extern void fbtft_unregister_backlight(struct fbtft_par *par);
+extern int fbtft_init_display(struct fbtft_par *par);
+extern int fbtft_probe_common(struct fbtft_display *display,
+	struct spi_device *sdev, struct platform_device *pdev);
+extern int fbtft_remove_common(struct device *dev, struct fb_info *info);
+
+/* fbtft-io.c */
+extern int fbtft_write_spi(struct fbtft_par *par, void *buf, size_t len);
+extern int fbtft_write_spi_emulate_9(struct fbtft_par *par,
+	void *buf, size_t len);
+extern int fbtft_read_spi(struct fbtft_par *par, void *buf, size_t len);
+extern int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len);
+extern int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len);
+extern int fbtft_write_gpio16_wr_latched(struct fbtft_par *par,
+	void *buf, size_t len);
+
+/* fbtft-bus.c */
+extern int fbtft_write_vmem8_bus8(struct fbtft_par *par, size_t offset, size_t len);
+extern int fbtft_write_vmem16_bus16(struct fbtft_par *par, size_t offset, size_t len);
+extern int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len);
+extern int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len);
+extern void fbtft_write_reg8_bus8(struct fbtft_par *par, int len, ...);
+extern void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...);
+extern void fbtft_write_reg16_bus8(struct fbtft_par *par, int len, ...);
+extern void fbtft_write_reg16_bus16(struct fbtft_par *par, int len, ...);
+
+
+#define FBTFT_REGISTER_DRIVER(_name, _compatible, _display)                \
+									   \
+static int fbtft_driver_probe_spi(struct spi_device *spi)                  \
+{                                                                          \
+	return fbtft_probe_common(_display, spi, NULL);                    \
+}                                                                          \
+									   \
+static int fbtft_driver_remove_spi(struct spi_device *spi)                 \
+{                                                                          \
+	struct fb_info *info = spi_get_drvdata(spi);                       \
+									   \
+	return fbtft_remove_common(&spi->dev, info);                       \
+}                                                                          \
+									   \
+static int fbtft_driver_probe_pdev(struct platform_device *pdev)           \
+{                                                                          \
+	return fbtft_probe_common(_display, NULL, pdev);                   \
+}                                                                          \
+									   \
+static int fbtft_driver_remove_pdev(struct platform_device *pdev)          \
+{                                                                          \
+	struct fb_info *info = platform_get_drvdata(pdev);                 \
+									   \
+	return fbtft_remove_common(&pdev->dev, info);                      \
+}                                                                          \
+									   \
+static const struct of_device_id dt_ids[] = {                              \
+        { .compatible = _compatible },                                     \
+        {},                                                                \
+};                                                                         \
+									   \
+MODULE_DEVICE_TABLE(of, dt_ids);                                           \
+									   \
+									   \
+static struct spi_driver fbtft_driver_spi_driver = {                       \
+	.driver = {                                                        \
+		.name   = _name,                                           \
+		.owner  = THIS_MODULE,                                     \
+                .of_match_table = of_match_ptr(dt_ids),                    \
+	},                                                                 \
+	.probe  = fbtft_driver_probe_spi,                                  \
+	.remove = fbtft_driver_remove_spi,                                 \
+};                                                                         \
+									   \
+static struct platform_driver fbtft_driver_platform_driver = {             \
+	.driver = {                                                        \
+		.name   = _name,                                           \
+		.owner  = THIS_MODULE,                                     \
+                .of_match_table = of_match_ptr(dt_ids),                    \
+	},                                                                 \
+	.probe  = fbtft_driver_probe_pdev,                                 \
+	.remove = fbtft_driver_remove_pdev,                                \
+};                                                                         \
+									   \
+static int __init fbtft_driver_module_init(void)                           \
+{                                                                          \
+	int ret;                                                           \
+									   \
+	ret = spi_register_driver(&fbtft_driver_spi_driver);               \
+	if (ret < 0)                                                       \
+		return ret;                                                \
+	return platform_driver_register(&fbtft_driver_platform_driver);    \
+}                                                                          \
+									   \
+static void __exit fbtft_driver_module_exit(void)                          \
+{                                                                          \
+	spi_unregister_driver(&fbtft_driver_spi_driver);                   \
+	platform_driver_unregister(&fbtft_driver_platform_driver);         \
+}                                                                          \
+									   \
+module_init(fbtft_driver_module_init);                                     \
+module_exit(fbtft_driver_module_exit);
+
+
+/* Debug macros */
+
+/* shorthand debug levels */
+#define DEBUG_LEVEL_1	DEBUG_REQUEST_GPIOS
+#define DEBUG_LEVEL_2	(DEBUG_LEVEL_1 | DEBUG_DRIVER_INIT_FUNCTIONS | DEBUG_TIME_FIRST_UPDATE)
+#define DEBUG_LEVEL_3	(DEBUG_LEVEL_2 | DEBUG_RESET | DEBUG_INIT_DISPLAY | DEBUG_BLANK | DEBUG_REQUEST_GPIOS | DEBUG_FREE_GPIOS | DEBUG_VERIFY_GPIOS | DEBUG_BACKLIGHT | DEBUG_SYSFS)
+#define DEBUG_LEVEL_4	(DEBUG_LEVEL_2 | DEBUG_FB_READ | DEBUG_FB_WRITE | DEBUG_FB_FILLRECT | DEBUG_FB_COPYAREA | DEBUG_FB_IMAGEBLIT | DEBUG_FB_BLANK)
+#define DEBUG_LEVEL_5	(DEBUG_LEVEL_3 | DEBUG_UPDATE_DISPLAY)
+#define DEBUG_LEVEL_6	(DEBUG_LEVEL_4 | DEBUG_LEVEL_5)
+#define DEBUG_LEVEL_7	0xFFFFFFFF
+
+#define DEBUG_DRIVER_INIT_FUNCTIONS (1<<3)
+#define DEBUG_TIME_FIRST_UPDATE     (1<<4)
+#define DEBUG_TIME_EACH_UPDATE      (1<<5)
+#define DEBUG_DEFERRED_IO           (1<<6)
+#define DEBUG_FBTFT_INIT_FUNCTIONS  (1<<7)
+
+/* fbops */
+#define DEBUG_FB_READ               (1<<8)
+#define DEBUG_FB_WRITE              (1<<9)
+#define DEBUG_FB_FILLRECT           (1<<10)
+#define DEBUG_FB_COPYAREA           (1<<11)
+#define DEBUG_FB_IMAGEBLIT          (1<<12)
+#define DEBUG_FB_SETCOLREG          (1<<13)
+#define DEBUG_FB_BLANK              (1<<14)
+
+#define DEBUG_SYSFS                 (1<<16)
+
+/* fbtftops */
+#define DEBUG_BACKLIGHT             (1<<17)
+#define DEBUG_READ                  (1<<18)
+#define DEBUG_WRITE                 (1<<19)
+#define DEBUG_WRITE_VMEM            (1<<20)
+#define DEBUG_WRITE_REGISTER        (1<<21)
+#define DEBUG_SET_ADDR_WIN          (1<<22)
+#define DEBUG_RESET                 (1<<23)
+#define DEBUG_MKDIRTY               (1<<24)
+#define DEBUG_UPDATE_DISPLAY        (1<<25)
+#define DEBUG_INIT_DISPLAY          (1<<26)
+#define DEBUG_BLANK                 (1<<27)
+#define DEBUG_REQUEST_GPIOS         (1<<28)
+#define DEBUG_FREE_GPIOS            (1<<29)
+#define DEBUG_REQUEST_GPIOS_MATCH   (1<<30)
+#define DEBUG_VERIFY_GPIOS          (1<<31)
+
+
+#define fbtft_init_dbg(dev, format, arg...)                  \
+do {                                                         \
+	if (unlikely((dev)->platform_data &&                 \
+	    (((struct fbtft_platform_data *)(dev)->platform_data)->display.debug & DEBUG_DRIVER_INIT_FUNCTIONS))) \
+		dev_info(dev, format, ##arg);                \
+} while (0)
+
+#define fbtft_par_dbg(level, par, format, arg...)            \
+do {                                                         \
+	if (unlikely(par->debug & level))                    \
+		dev_info(par->info->device, format, ##arg);  \
+} while (0)
+
+#define fbtft_dev_dbg(level, par, dev, format, arg...)       \
+do {                                                         \
+	if (unlikely(par->debug & level))                    \
+		dev_info(dev, format, ##arg);                \
+} while (0)
+
+#define fbtft_par_dbg_hex(level, par, dev, type, buf, num, format, arg...) \
+do {                                                                       \
+	if (unlikely(par->debug & level))                                  \
+		fbtft_dbg_hex(dev, sizeof(type), buf, num * sizeof(type), format, ##arg); \
+} while (0)
+
+#endif /* __LINUX_FBTFT_H */
diff -Nur linux-3.18.10/drivers/staging/fbtft/fbtft-io.c linux-rpi/drivers/staging/fbtft/fbtft-io.c
--- linux-3.18.10/drivers/staging/fbtft/fbtft-io.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fbtft-io.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,239 @@
+#include <linux/export.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include "fbtft.h"
+
+int fbtft_write_spi(struct fbtft_par *par, void *buf, size_t len)
+{
+	struct spi_transfer t = {
+		.tx_buf = buf,
+		.len = len,
+	};
+	struct spi_message m;
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	if (!par->spi) {
+		dev_err(par->info->device,
+			"%s: par->spi is unexpectedly NULL\n", __func__);
+		return -1;
+	}
+
+	spi_message_init(&m);
+	if (par->txbuf.dma && buf == par->txbuf.buf) {
+		t.tx_dma = par->txbuf.dma;
+		m.is_dma_mapped = 1;
+	}
+	spi_message_add_tail(&t, &m);
+	return spi_sync(par->spi, &m);
+}
+EXPORT_SYMBOL(fbtft_write_spi);
+
+/**
+ * fbtft_write_spi_emulate_9() - write SPI emulating 9-bit
+ * @par: Driver data
+ * @buf: Buffer to write
+ * @len: Length of buffer (must be divisible by 8)
+ *
+ * When 9-bit SPI is not available, this function can be used to emulate that.
+ * par->extra must hold a transformation buffer used for transfer.
+ */
+int fbtft_write_spi_emulate_9(struct fbtft_par *par, void *buf, size_t len)
+{
+	u16 *src = buf;
+	u8 *dst = par->extra;
+	size_t size = len / 2;
+	size_t added = 0;
+	int bits, i, j;
+	u64 val, dc, tmp;
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	if (!par->extra) {
+		dev_err(par->info->device, "%s: error: par->extra is NULL\n",
+			__func__);
+		return -EINVAL;
+	}
+	if ((len % 8) != 0) {
+		dev_err(par->info->device,
+			"%s: error: len=%d must be divisible by 8\n",
+			__func__, len);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < size; i += 8) {
+		tmp = 0;
+		bits = 63;
+		for (j = 0; j < 7; j++) {
+			dc = (*src & 0x0100) ? 1 : 0;
+			val = *src & 0x00FF;
+			tmp |= dc << bits;
+			bits -= 8;
+			tmp |= val << bits--;
+			src++;
+		}
+		tmp |= ((*src & 0x0100) ? 1 : 0);
+		*(u64 *)dst = cpu_to_be64(tmp);
+		dst += 8;
+		*dst++ = (u8)(*src++ & 0x00FF);
+		added++;
+	}
+
+	return spi_write(par->spi, par->extra, size + added);
+}
+EXPORT_SYMBOL(fbtft_write_spi_emulate_9);
+
+int fbtft_read_spi(struct fbtft_par *par, void *buf, size_t len)
+{
+	int ret;
+	u8 txbuf[32] = { 0, };
+	struct spi_transfer	t = {
+			.speed_hz = 2000000,
+			.rx_buf		= buf,
+			.len		= len,
+		};
+	struct spi_message	m;
+
+	if (!par->spi) {
+		dev_err(par->info->device,
+			"%s: par->spi is unexpectedly NULL\n", __func__);
+		return -ENODEV;
+	}
+
+	if (par->startbyte) {
+		if (len > 32) {
+			dev_err(par->info->device,
+				"%s: len=%d can't be larger than 32 when using 'startbyte'\n",
+				__func__, len);
+			return -EINVAL;
+		}
+		txbuf[0] = par->startbyte | 0x3;
+		t.tx_buf = txbuf;
+		fbtft_par_dbg_hex(DEBUG_READ, par, par->info->device, u8,
+			txbuf, len, "%s(len=%d) txbuf => ", __func__, len);
+	}
+
+	spi_message_init(&m);
+	spi_message_add_tail(&t, &m);
+	ret = spi_sync(par->spi, &m);
+	fbtft_par_dbg_hex(DEBUG_READ, par, par->info->device, u8, buf, len,
+		"%s(len=%d) buf <= ", __func__, len);
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_read_spi);
+
+/*
+ * Optimized use of gpiolib is twice as fast as no optimization
+ * only one driver can use the optimized version at a time
+ */
+int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len)
+{
+	u8 data;
+	int i;
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+	static u8 prev_data;
+#endif
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	while (len--) {
+		data = *(u8 *) buf;
+
+		/* Start writing by pulling down /WR */
+		gpio_set_value(par->gpio.wr, 0);
+
+		/* Set data */
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		if (data == prev_data) {
+			gpio_set_value(par->gpio.wr, 0); /* used as delay */
+		} else {
+			for (i = 0; i < 8; i++) {
+				if ((data & 1) != (prev_data & 1))
+					gpio_set_value(par->gpio.db[i],
+								(data & 1));
+				data >>= 1;
+				prev_data >>= 1;
+			}
+		}
+#else
+		for (i = 0; i < 8; i++) {
+			gpio_set_value(par->gpio.db[i], (data & 1));
+			data >>= 1;
+		}
+#endif
+
+		/* Pullup /WR */
+		gpio_set_value(par->gpio.wr, 1);
+
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		prev_data = *(u8 *) buf;
+#endif
+		buf++;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(fbtft_write_gpio8_wr);
+
+int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len)
+{
+	u16 data;
+	int i;
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+	static u16 prev_data;
+#endif
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	while (len) {
+		data = *(u16 *) buf;
+
+		/* Start writing by pulling down /WR */
+		gpio_set_value(par->gpio.wr, 0);
+
+		/* Set data */
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		if (data == prev_data) {
+			gpio_set_value(par->gpio.wr, 0); /* used as delay */
+		} else {
+			for (i = 0; i < 16; i++) {
+				if ((data & 1) != (prev_data & 1))
+					gpio_set_value(par->gpio.db[i],
+								(data & 1));
+				data >>= 1;
+				prev_data >>= 1;
+			}
+		}
+#else
+		for (i = 0; i < 16; i++) {
+			gpio_set_value(par->gpio.db[i], (data & 1));
+			data >>= 1;
+		}
+#endif
+
+		/* Pullup /WR */
+		gpio_set_value(par->gpio.wr, 1);
+
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		prev_data = *(u16 *) buf;
+#endif
+		buf += 2;
+		len -= 2;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(fbtft_write_gpio16_wr);
+
+int fbtft_write_gpio16_wr_latched(struct fbtft_par *par, void *buf, size_t len)
+{
+	dev_err(par->info->device, "%s: function not implemented\n", __func__);
+	return -1;
+}
+EXPORT_SYMBOL(fbtft_write_gpio16_wr_latched);
diff -Nur linux-3.18.10/drivers/staging/fbtft/fbtft-sysfs.c linux-rpi/drivers/staging/fbtft/fbtft-sysfs.c
--- linux-3.18.10/drivers/staging/fbtft/fbtft-sysfs.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fbtft-sysfs.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,222 @@
+#include "fbtft.h"
+
+
+static int get_next_ulong(char **str_p, unsigned long *val, char *sep, int base)
+{
+	char *p_val;
+	int ret;
+
+	if (!str_p || !(*str_p))
+		return -EINVAL;
+
+	p_val = strsep(str_p, sep);
+
+	if (!p_val)
+		return -EINVAL;
+
+	ret = kstrtoul(p_val, base, val);
+	if (ret)
+		return -EINVAL;
+
+	return 0;
+}
+
+int fbtft_gamma_parse_str(struct fbtft_par *par, unsigned long *curves,
+						const char *str, int size)
+{
+	char *str_p, *curve_p = NULL;
+	char *tmp;
+	unsigned long val = 0;
+	int ret = 0;
+	int curve_counter, value_counter;
+
+	fbtft_par_dbg(DEBUG_SYSFS, par, "%s() str=\n", __func__);
+
+	if (!str || !curves)
+		return -EINVAL;
+
+	fbtft_par_dbg(DEBUG_SYSFS, par, "%s\n", str);
+
+	tmp = kmalloc(size+1, GFP_KERNEL);
+	if (!tmp)
+		return -ENOMEM;
+	memcpy(tmp, str, size+1);
+
+	/* replace optional separators */
+	str_p = tmp;
+	while (*str_p) {
+		if (*str_p == ',')
+			*str_p = ' ';
+		if (*str_p == ';')
+			*str_p = '\n';
+		str_p++;
+	}
+
+	str_p = strim(tmp);
+
+	curve_counter = 0;
+	while (str_p) {
+		if (curve_counter == par->gamma.num_curves) {
+			dev_err(par->info->device, "Gamma: Too many curves\n");
+			ret = -EINVAL;
+			goto out;
+		}
+		curve_p = strsep(&str_p, "\n");
+		value_counter = 0;
+		while (curve_p) {
+			if (value_counter == par->gamma.num_values) {
+				dev_err(par->info->device,
+					"Gamma: Too many values\n");
+				ret = -EINVAL;
+				goto out;
+			}
+			ret = get_next_ulong(&curve_p, &val, " ", 16);
+			if (ret)
+				goto out;
+			curves[curve_counter * par->gamma.num_values + value_counter] = val;
+			value_counter++;
+		}
+		if (value_counter != par->gamma.num_values) {
+			dev_err(par->info->device, "Gamma: Too few values\n");
+			ret = -EINVAL;
+			goto out;
+		}
+		curve_counter++;
+	}
+	if (curve_counter != par->gamma.num_curves) {
+		dev_err(par->info->device, "Gamma: Too few curves\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+out:
+	kfree(tmp);
+	return ret;
+}
+
+static ssize_t
+sprintf_gamma(struct fbtft_par *par, unsigned long *curves, char *buf)
+{
+	ssize_t len = 0;
+	unsigned int i, j;
+
+	mutex_lock(&par->gamma.lock);
+	for (i = 0; i < par->gamma.num_curves; i++) {
+		for (j = 0; j < par->gamma.num_values; j++)
+			len += scnprintf(&buf[len], PAGE_SIZE,
+				"%04lx ", curves[i*par->gamma.num_values + j]);
+		buf[len-1] = '\n';
+	}
+	mutex_unlock(&par->gamma.lock);
+
+	return len;
+}
+
+static ssize_t store_gamma_curve(struct device *device,
+					struct device_attribute *attr,
+					const char *buf, size_t count)
+{
+	struct fb_info *fb_info = dev_get_drvdata(device);
+	struct fbtft_par *par = fb_info->par;
+	unsigned long tmp_curves[FBTFT_GAMMA_MAX_VALUES_TOTAL];
+	int ret;
+
+	ret = fbtft_gamma_parse_str(par, tmp_curves, buf, count);
+	if (ret)
+		return ret;
+
+	ret = par->fbtftops.set_gamma(par, tmp_curves);
+	if (ret)
+		return ret;
+
+	mutex_lock(&par->gamma.lock);
+	memcpy(par->gamma.curves, tmp_curves,
+		par->gamma.num_curves * par->gamma.num_values * sizeof(tmp_curves[0]));
+	mutex_unlock(&par->gamma.lock);
+
+	return count;
+}
+
+static ssize_t show_gamma_curve(struct device *device,
+				struct device_attribute *attr, char *buf)
+{
+	struct fb_info *fb_info = dev_get_drvdata(device);
+	struct fbtft_par *par = fb_info->par;
+
+	return sprintf_gamma(par, par->gamma.curves, buf);
+}
+
+static struct device_attribute gamma_device_attrs[] = {
+	__ATTR(gamma, 0660, show_gamma_curve, store_gamma_curve),
+};
+
+
+void fbtft_expand_debug_value(unsigned long *debug)
+{
+	switch (*debug & 0b111) {
+	case 1:
+		*debug |= DEBUG_LEVEL_1;
+		break;
+	case 2:
+		*debug |= DEBUG_LEVEL_2;
+		break;
+	case 3:
+		*debug |= DEBUG_LEVEL_3;
+		break;
+	case 4:
+		*debug |= DEBUG_LEVEL_4;
+		break;
+	case 5:
+		*debug |= DEBUG_LEVEL_5;
+		break;
+	case 6:
+		*debug |= DEBUG_LEVEL_6;
+		break;
+	case 7:
+		*debug = 0xFFFFFFFF;
+		break;
+	}
+}
+
+static ssize_t store_debug(struct device *device,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	struct fb_info *fb_info = dev_get_drvdata(device);
+	struct fbtft_par *par = fb_info->par;
+	int ret;
+
+	ret = kstrtoul(buf, 10, &par->debug);
+	if (ret)
+		return ret;
+	fbtft_expand_debug_value(&par->debug);
+
+	return count;
+}
+
+static ssize_t show_debug(struct device *device,
+				struct device_attribute *attr, char *buf)
+{
+	struct fb_info *fb_info = dev_get_drvdata(device);
+	struct fbtft_par *par = fb_info->par;
+
+	return snprintf(buf, PAGE_SIZE, "%lu\n", par->debug);
+}
+
+static struct device_attribute debug_device_attr = \
+	__ATTR(debug, 0660, show_debug, store_debug);
+
+
+void fbtft_sysfs_init(struct fbtft_par *par)
+{
+	device_create_file(par->info->dev, &debug_device_attr);
+	if (par->gamma.curves && par->fbtftops.set_gamma)
+		device_create_file(par->info->dev, &gamma_device_attrs[0]);
+}
+
+void fbtft_sysfs_exit(struct fbtft_par *par)
+{
+	device_remove_file(par->info->dev, &debug_device_attr);
+	if (par->gamma.curves && par->fbtftops.set_gamma)
+		device_remove_file(par->info->dev, &gamma_device_attrs[0]);
+}
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_tinylcd.c linux-rpi/drivers/staging/fbtft/fb_tinylcd.c
--- linux-3.18.10/drivers/staging/fbtft/fb_tinylcd.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_tinylcd.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,124 @@
+/*
+ * Custom FB driver for tinylcd.com display
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_tinylcd"
+#define WIDTH		320
+#define HEIGHT		480
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	write_reg(par, 0xB0, 0x80);
+	write_reg(par, 0xC0, 0x0A, 0x0A);
+	write_reg(par, 0xC1, 0x45, 0x07);
+	write_reg(par, 0xC2, 0x33);
+	write_reg(par, 0xC5, 0x00, 0x42, 0x80);
+	write_reg(par, 0xB1, 0xD0, 0x11);
+	write_reg(par, 0xB4, 0x02);
+	write_reg(par, 0xB6, 0x00, 0x22, 0x3B);
+	write_reg(par, 0xB7, 0x07);
+	write_reg(par, 0x36, 0x58);
+	write_reg(par, 0xF0, 0x36, 0xA5, 0xD3);
+	write_reg(par, 0xE5, 0x80);
+	write_reg(par, 0xE5, 0x01);
+	write_reg(par, 0xB3, 0x00);
+	write_reg(par, 0xE5, 0x00);
+	write_reg(par, 0xF0, 0x36, 0xA5, 0x53);
+	write_reg(par, 0xE0, 0x00, 0x35, 0x33, 0x00, 0x00, 0x00,
+	                     0x00, 0x35, 0x33, 0x00, 0x00, 0x00);
+	write_reg(par, 0x3A, 0x55);
+	write_reg(par, 0x11);
+	udelay(250);
+	write_reg(par, 0x29);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 270:
+		write_reg(par, 0xB6, 0x00, 0x02, 0x3B);
+		write_reg(par, 0x36, 0x28);
+		break;
+	case 180:
+		write_reg(par, 0xB6, 0x00, 0x22, 0x3B);
+		write_reg(par, 0x36, 0x58);
+		break;
+	case 90:
+		write_reg(par, 0xB6, 0x00, 0x22, 0x3B);
+		write_reg(par, 0x36, 0x38);
+		break;
+	default:
+		write_reg(par, 0xB6, 0x00, 0x22, 0x3B);
+		write_reg(par, 0x36, 0x08);
+		break;
+	}
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "neosec,tinylcd", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("spi:tinylcd");
+
+MODULE_DESCRIPTION("Custom FB driver for tinylcd.com display");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_tls8204.c linux-rpi/drivers/staging/fbtft/fb_tls8204.c
--- linux-3.18.10/drivers/staging/fbtft/fb_tls8204.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_tls8204.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,176 @@
+/*
+ * FB driver for the TLS8204 LCD Controller
+ *
+ * The display is monochrome and the video memory is RGB565.
+ * Any pixel value except 0 turns the pixel on.
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ * Copyright (C) 2014 Michael Hope (adapted for the TLS8204)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_tls8204"
+#define WIDTH		84
+#define HEIGHT		48
+#define TXBUFLEN	WIDTH
+#define DEFAULT_GAMMA	"40" /* gamma is used to control contrast in this driver */
+
+static unsigned bs = 4;
+module_param(bs, uint, 0);
+MODULE_PARM_DESC(bs, "BS[2:0] Bias voltage level: 0-7 (default: 4)");
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* Enter extended command mode */
+	write_reg(par, 0x21); /* 5:1  1
+				 2:0  PD - Powerdown control: chip is active
+				 1:0  V  - Entry mode: horizontal addressing
+				 0:1  H  - Extended instruction set control: extended
+			      */
+
+	/* H=1 Bias system */
+	write_reg(par, 0x10 | (bs & 0x7)); /*
+				 4:1  1
+				 3:0  0
+				 2:x  BS2 - Bias System
+				 1:x  BS1
+				 0:x  BS0
+			      */
+
+	/* Set the address of the first display line. */
+	write_reg(par, 0x04 | (64 >> 6));
+	write_reg(par, 0x40 | (64 & 0x3F));
+
+	/* Enter H=0 standard command mode */
+	write_reg(par, 0x20);
+
+	/* H=0 Display control */
+	write_reg(par, 0x08 | 4); /*
+				 3:1  1
+				 2:1  D  - DE: 10=normal mode
+				 1:0  0
+				 0:0  E
+			      */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* H=0 Set X address of RAM */
+	write_reg(par, 0x80); /* 7:1  1
+				 6-0: X[6:0] - 0x00
+			      */
+
+	/* H=0 Set Y address of RAM */
+	write_reg(par, 0x40); /* 7:0  0
+				 6:1  1
+				 2-0: Y[2:0] - 0x0
+			      */
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	int x, y, i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	for (y = 0; y < HEIGHT/8; y++) {
+		u8 *buf = par->txbuf.buf;
+		/* The display is 102x68 but the LCD is 84x48.  Set
+		   the write pointer at the start of each row. */
+		gpio_set_value(par->gpio.dc, 0);
+		write_reg(par, 0x80 | 0);
+		write_reg(par, 0x40 | y);
+
+		for (x = 0; x < WIDTH; x++) {
+			u8 ch = 0;
+			for (i = 0; i < 8*WIDTH; i += WIDTH) {
+				ch >>= 1;
+				if (vmem16[(y*8*WIDTH)+i+x])
+					ch |= 0x80;
+			}
+			*buf++ = ch;
+		}
+		/* Write the row */
+		gpio_set_value(par->gpio.dc, 1);
+		ret = par->fbtftops.write(par, par->txbuf.buf, WIDTH);
+		if (ret < 0) {
+			dev_err(par->info->device,
+				"%s: write failed and returned: %d\n", __func__, ret);
+			break;
+		}
+	}
+
+	return ret;
+}
+
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	curves[0] &= 0x7F;
+
+	write_reg(par, 0x21); /* turn on extended instruction set */
+	write_reg(par, 0x80 | curves[0]);
+	write_reg(par, 0x20); /* turn off extended instruction set */
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.txbuflen = TXBUFLEN,
+	.gamma_num = 1,
+	.gamma_len = 1,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.write_vmem = write_vmem,
+		.set_gamma = set_gamma,
+	},
+	.backlight = 1,
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "teralane,tls8204", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("spi:tls8204");
+
+MODULE_DESCRIPTION("FB driver for the TLS8204 LCD Controller");
+MODULE_AUTHOR("Michael Hope");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_uc1701.c linux-rpi/drivers/staging/fbtft/fb_uc1701.c
--- linux-3.18.10/drivers/staging/fbtft/fb_uc1701.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_uc1701.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,210 @@
+/*
+ * FB driver for the UC1701 LCD Controller
+ *
+ * The display is monochrome and the video memory is RGB565.
+ * Any pixel value except 0 turns the pixel on.
+ *
+ * Copyright (C) 2014 Juergen Holzmann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME	"fb_uc1701"
+#define WIDTH	  102
+#define HEIGHT	 64
+#define PAGES	  (HEIGHT/8)
+
+/* 1: Display on/off */
+#define LCD_DISPLAY_ENABLE    0xAE
+/* 2: display start line set */
+#define LCD_START_LINE	0x40
+/* 3: Page address set (lower 4 bits select one of the pages) */
+#define LCD_PAGE_ADDRESS      0xB0
+/* 4: column address */
+#define LCD_COL_ADDRESS       0x10
+/* 8: select orientation */
+#define LCD_BOTTOMVIEW	0xA0
+/* 9: inverted display */
+#define LCD_DISPLAY_INVERT    0xA6
+/* 10: show memory content or switch all pixels on */
+#define LCD_ALL_PIXEL	 0xA4
+/* 11: lcd bias set */
+#define LCD_BIAS	      0xA2
+/* 14: Reset Controller */
+#define LCD_RESET_CMD	 0xE2
+/* 15: output mode select (turns display upside-down) */
+#define LCD_SCAN_DIR	  0xC0
+/* 16: power control set */
+#define LCD_POWER_CONTROL     0x28
+/* 17: voltage regulator resistor ratio set */
+#define LCD_VOLTAGE	   0x20
+/* 18: Volume mode set */
+#define LCD_VOLUME_MODE       0x81
+/* 22: NOP command */
+#define LCD_NO_OP	     0xE3
+/* 25: advanced program control */
+#define LCD_ADV_PROG_CTRL     0xFA
+/* 25: advanced program control2 */
+#define LCD_ADV_PROG_CTRL2    0x10
+#define LCD_TEMPCOMP_HIGH     0x80
+/* column offset for normal orientation */
+#define SHIFT_ADDR_NORMAL     0
+/* column offset for bottom view orientation */
+#define SHIFT_ADDR_TOPVIEW    30
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* softreset of LCD */
+	write_reg(par, LCD_RESET_CMD);
+	mdelay(10);
+
+	/* set startpoint */
+	/* LCD_START_LINE | (pos & 0x3F) */
+	write_reg(par, LCD_START_LINE);
+
+	/* select orientation BOTTOMVIEW */
+	write_reg(par, LCD_BOTTOMVIEW | 1);
+	/* output mode select (turns display upside-down) */
+	write_reg(par, LCD_SCAN_DIR | 0x00);
+
+	/* Normal Pixel mode */
+	write_reg(par, LCD_ALL_PIXEL | 0);
+
+	/* positive display */
+	write_reg(par, LCD_DISPLAY_INVERT | 0);
+
+	/* bias 1/9 */
+	write_reg(par, LCD_BIAS | 0);
+
+	/* power control mode: all features on */
+	/* LCD_POWER_CONTROL | (val&0x07) */
+	write_reg(par, LCD_POWER_CONTROL | 0x07);
+
+	/* set voltage regulator R/R */
+	/* LCD_VOLTAGE | (val&0x07) */
+	write_reg(par, LCD_VOLTAGE | 0x07);
+
+	/* volume mode set */
+	/* LCD_VOLUME_MODE,val&0x3f,LCD_NO_OP */
+	write_reg(par, LCD_VOLUME_MODE);
+	/* LCD_VOLUME_MODE,val&0x3f,LCD_NO_OP */
+	write_reg(par, 0x09);
+	/* ???? */
+	/* LCD_VOLUME_MODE,val&0x3f,LCD_NO_OP */
+	write_reg(par, LCD_NO_OP);
+
+	/* advanced program control */
+	write_reg(par, LCD_ADV_PROG_CTRL);
+	write_reg(par, LCD_ADV_PROG_CTRL2|LCD_TEMPCOMP_HIGH);
+
+	/* enable display */
+	write_reg(par, LCD_DISPLAY_ENABLE | 1);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* goto address */
+	/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+	 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+	 LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+	write_reg(par, LCD_PAGE_ADDRESS);
+	/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+	 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+	  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+	write_reg(par, 0x00);
+	/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+	 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+	  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+	write_reg(par, LCD_COL_ADDRESS);
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	u8 *buf = par->txbuf.buf;
+	int x, y, i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	for (y = 0; y < PAGES; y++) {
+		buf = par->txbuf.buf;
+		for (x = 0; x < WIDTH; x++) {
+			*buf = 0x00;
+			for (i = 0; i < 8; i++)
+				*buf |= (vmem16[((y*8*WIDTH)+(i*WIDTH))+x] ? 1 : 0) << i;
+			buf++;
+		}
+		/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+		 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+		  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+		write_reg(par, LCD_PAGE_ADDRESS|(u8)y);
+		/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+		 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+		  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+		write_reg(par, 0x00);
+		/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+		 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+		  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+		write_reg(par, LCD_COL_ADDRESS);
+		gpio_set_value(par->gpio.dc, 1);
+		ret = par->fbtftops.write(par, par->txbuf.buf, WIDTH);
+		gpio_set_value(par->gpio.dc, 0);
+	}
+
+	if (ret < 0)
+		dev_err(par->info->device, "%s: write failed and returned: %d\n", __func__, ret);
+
+	return ret;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.write_vmem = write_vmem,
+	},
+	.backlight = 1,
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "UltraChip,uc1701", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("spi:uc1701");
+
+MODULE_DESCRIPTION("FB driver for the UC1701 LCD Controller");
+MODULE_AUTHOR("Juergen Holzmann");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_upd161704.c linux-rpi/drivers/staging/fbtft/fb_upd161704.c
--- linux-3.18.10/drivers/staging/fbtft/fb_upd161704.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_upd161704.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,206 @@
+/*
+ * FB driver for the uPD161704 LCD Controller
+ *
+ * Copyright (C) 2014 Seong-Woo Kim
+ *
+ * Based on fb_ili9325.c by Noralf Tronnes
+ * Based on ili9325.c by Jeroen Domburg
+ * Init code from UTFT library by Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_upd161704"
+#define WIDTH		240
+#define HEIGHT		320
+#define BPP		16
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	/* Initialization sequence from Lib_UTFT */
+
+	/* register reset */
+	write_reg(par, 0x0003,0x0001);	/* Soft reset */
+
+	/* oscillator start */
+	write_reg(par, 0x003A,0x0001);	/*Oscillator 0: stop, 1: operation */
+	udelay(100);
+
+	/* y-setting */
+	write_reg(par, 0x0024,0x007B);	/* amplitude setting */
+	udelay(10);
+	write_reg(par, 0x0025,0x003B);	/* amplitude setting */
+	write_reg(par, 0x0026,0x0034);	/* amplitude setting */
+	udelay(10);
+	write_reg(par, 0x0027,0x0004);	/* amplitude setting */
+	write_reg(par, 0x0052,0x0025);	/* circuit setting 1 */
+	udelay(10);
+	write_reg(par, 0x0053,0x0033);	/* circuit setting 2 */
+	write_reg(par, 0x0061,0x001C);	/* adjustment V10 positive polarity */
+	udelay(10);
+	write_reg(par, 0x0062,0x002C);	/* adjustment V9 negative polarity */
+	write_reg(par, 0x0063,0x0022);	/* adjustment V34 positive polarity */
+	udelay(10);
+	write_reg(par, 0x0064,0x0027);	/* adjustment V31 negative polarity */
+	udelay(10);
+	write_reg(par, 0x0065,0x0014);	/* adjustment V61 negative polarity */
+	udelay(10);
+	write_reg(par, 0x0066,0x0010);	/* adjustment V61 negative polarity */
+
+	/* Basical clock for 1 line (BASECOUNT[7:0]) number specified */
+	write_reg(par, 0x002E,0x002D);
+
+	/* Power supply setting */
+	write_reg(par, 0x0019,0x0000);	/* DC/DC output setting */
+	udelay(200);
+	write_reg(par, 0x001A,0x1000);	/* DC/DC frequency setting */
+	write_reg(par, 0x001B,0x0023);	/* DC/DC rising setting */
+	write_reg(par, 0x001C,0x0C01);	/* Regulator voltage setting */
+	write_reg(par, 0x001D,0x0000);	/* Regulator current setting */
+	write_reg(par, 0x001E,0x0009);	/* VCOM output setting */
+	write_reg(par, 0x001F,0x0035);	/* VCOM amplitude setting */
+	write_reg(par, 0x0020,0x0015);	/* VCOMM cencter setting */
+	write_reg(par, 0x0018,0x1E7B);	/* DC/DC operation setting */
+
+	/* windows setting */
+	write_reg(par, 0x0008,0x0000);	/* Minimum X address */
+	write_reg(par, 0x0009,0x00EF);	/* Maximum X address */
+	write_reg(par, 0x000a,0x0000);	/* Minimum Y address */
+	write_reg(par, 0x000b,0x013F);	/* Maximum Y address */
+
+	/* LCD display area setting */
+	write_reg(par, 0x0029,0x0000);	/* [LCDSIZE]  X MIN. size set */
+	write_reg(par, 0x002A,0x0000);	/* [LCDSIZE]  Y MIN. size set */
+	write_reg(par, 0x002B,0x00EF);	/* [LCDSIZE]  X MAX. size set */
+	write_reg(par, 0x002C,0x013F);	/* [LCDSIZE]  Y MAX. size set */
+
+	/* Gate scan setting */
+	write_reg(par, 0x0032,0x0002);
+
+	/* n line inversion line number */
+	write_reg(par, 0x0033,0x0000);
+
+	/* Line inversion/frame inversion/interlace setting */
+	write_reg(par, 0x0037,0x0000);
+
+	/* Gate scan operation setting register */
+	write_reg(par, 0x003B,0x0001);
+
+	/* Color mode */
+	/*GS = 0: 260-k color (64 gray scale), GS = 1: 8 color (2 gray scale) */
+	write_reg(par, 0x0004,0x0000);
+
+	/* RAM control register */
+	write_reg(par, 0x0005,0x0000);	/*Window access 00:Normal, 10:Window */
+
+	/* Display setting register 2 */
+	write_reg(par, 0x0001,0x0000);
+
+	/* display setting */
+	write_reg(par, 0x0000,0x0000);	/* display on */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0006, xs);
+		write_reg(par, 0x0007, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0006, WIDTH - 1 - xs);
+		write_reg(par, 0x0007, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0006, WIDTH - 1 - ys);
+		write_reg(par, 0x0007, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0006, ys);
+		write_reg(par, 0x0007, HEIGHT - 1 - xs);
+		break;
+	}
+
+	write_reg(par, 0x0e); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	/* AM: GRAM update direction */
+	case 0:
+		write_reg(par, 0x01, 0x0000);
+		write_reg(par, 0x05, 0x0000);
+		break;
+	case 180:
+		write_reg(par, 0x01, 0x00C0);
+		write_reg(par, 0x05, 0x0000);
+		break;
+	case 270:
+		write_reg(par, 0x01, 0x0080);
+		write_reg(par, 0x05, 0x0001);
+		break;
+	case 90:
+		write_reg(par, 0x01, 0x0040);
+		write_reg(par, 0x05, 0x0001);
+		break;
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "nec,upd161704", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:upd161704");
+MODULE_ALIAS("platform:upd161704");
+
+MODULE_DESCRIPTION("FB driver for the uPD161704 LCD Controller");
+MODULE_AUTHOR("Seong-Woo Kim");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/fb_watterott.c linux-rpi/drivers/staging/fbtft/fb_watterott.c
--- linux-3.18.10/drivers/staging/fbtft/fb_watterott.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/fb_watterott.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,324 @@
+/*
+ * FB driver for the Watterott LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME			"fb_watterott"
+#define WIDTH			320
+#define HEIGHT			240
+#define FPS			5
+#define TXBUFLEN		1024
+#define DEFAULT_BRIGHTNESS	50
+
+#define CMD_VERSION		0x01
+#define CMD_LCD_LED		0x10
+#define CMD_LCD_RESET		0x11
+#define CMD_LCD_ORIENTATION	0x20
+#define CMD_LCD_DRAWIMAGE	0x27
+#define COLOR_RGB323		8
+#define COLOR_RGB332		9
+#define COLOR_RGB233		10
+#define COLOR_RGB565		16
+
+
+static short mode = 565;
+module_param(mode, short, 0);
+MODULE_PARM_DESC(mode, "RGB color transfer mode: 332, 565 (default)");
+
+static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	u8 *buf = par->buf;
+
+	va_start(args, len);
+	for (i = 0; i < len; i++)
+		*buf++ = (u8)va_arg(args, unsigned int);
+	va_end(args);
+
+	fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,
+		par->info->device, u8, par->buf, len, "%s: ", __func__);
+
+	ret = par->fbtftops.write(par, par->buf, len);
+	if (ret < 0) {
+		dev_err(par->info->device,
+			"%s: write() failed and returned %d\n", __func__, ret);
+		return;
+	}
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	unsigned start_line, end_line;
+	u16 *vmem16 = (u16 *)(par->info->screen_base + offset);
+	u16 *pos = par->txbuf.buf + 1;
+	u16 *buf16 = par->txbuf.buf + 10;
+	int i, j;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	start_line = offset / par->info->fix.line_length;
+	end_line = start_line + (len / par->info->fix.line_length) - 1;
+
+	/* Set command header. pos: x, y, w, h */
+	((u8 *)par->txbuf.buf)[0] = CMD_LCD_DRAWIMAGE;
+	pos[0] = 0;
+	pos[2] = cpu_to_be16(par->info->var.xres);
+	pos[3] = cpu_to_be16(1);
+	((u8 *)par->txbuf.buf)[9] = COLOR_RGB565;
+
+	for (i = start_line; i <= end_line; i++) {
+		pos[1] = cpu_to_be16(i);
+		for (j = 0; j < par->info->var.xres; j++)
+			buf16[j] = cpu_to_be16(*vmem16++);
+		ret = par->fbtftops.write(par,
+			par->txbuf.buf, 10 + par->info->fix.line_length);
+		if (ret < 0)
+			return ret;
+		udelay(300);
+	}
+
+	return 0;
+}
+
+#define RGB565toRGB323(c) (((c&0xE000)>>8) | ((c&0600)>>6) | ((c&0x001C)>>2))
+#define RGB565toRGB332(c) (((c&0xE000)>>8) | ((c&0700)>>6) | ((c&0x0018)>>3))
+#define RGB565toRGB233(c) (((c&0xC000)>>8) | ((c&0700)>>5) | ((c&0x001C)>>2))
+
+static int write_vmem_8bit(struct fbtft_par *par, size_t offset, size_t len)
+{
+	unsigned start_line, end_line;
+	u16 *vmem16 = (u16 *)(par->info->screen_base + offset);
+	u16 *pos = par->txbuf.buf + 1;
+	u8 *buf8 = par->txbuf.buf + 10;
+	int i, j;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	start_line = offset / par->info->fix.line_length;
+	end_line = start_line + (len / par->info->fix.line_length) - 1;
+
+	/* Set command header. pos: x, y, w, h */
+	((u8 *)par->txbuf.buf)[0] = CMD_LCD_DRAWIMAGE;
+	pos[0] = 0;
+	pos[2] = cpu_to_be16(par->info->var.xres);
+	pos[3] = cpu_to_be16(1);
+	((u8 *)par->txbuf.buf)[9] = COLOR_RGB332;
+
+	for (i = start_line; i <= end_line; i++) {
+		pos[1] = cpu_to_be16(i);
+		for (j = 0; j < par->info->var.xres; j++) {
+			buf8[j] = RGB565toRGB332(*vmem16);
+			vmem16++;
+		}
+		ret = par->fbtftops.write(par,
+			par->txbuf.buf, 10 + par->info->var.xres);
+		if (ret < 0)
+			return ret;
+		udelay(700);
+	}
+
+	return 0;
+}
+
+static unsigned firmware_version(struct fbtft_par *par)
+{
+	u8 rxbuf[4] = {0, };
+
+	write_reg(par, CMD_VERSION);
+	par->fbtftops.read(par, rxbuf, 4);
+	if (rxbuf[1] != '.')
+		return 0;
+
+	return (rxbuf[0] - '0') << 8 | (rxbuf[2] - '0') << 4 | (rxbuf[3] - '0');
+}
+
+static int init_display(struct fbtft_par *par)
+{
+	int ret;
+	unsigned version;
+	u8 save_mode;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* enable SPI interface by having CS and MOSI low during reset */
+	save_mode = par->spi->mode;
+	par->spi->mode |= SPI_CS_HIGH;
+	ret = par->spi->master->setup(par->spi); /* set CS inactive low */
+	if (ret) {
+		dev_err(par->info->device, "Could not set SPI_CS_HIGH\n");
+		return ret;
+	}
+	write_reg(par, 0x00); /* make sure mode is set */
+
+	mdelay(50);
+	par->fbtftops.reset(par);
+	mdelay(1000);
+	par->spi->mode = save_mode;
+	ret = par->spi->master->setup(par->spi);
+	if (ret) {
+		dev_err(par->info->device, "Could not restore SPI mode\n");
+		return ret;
+	}
+	write_reg(par, 0x00);
+
+	version = firmware_version(par);
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "Firmware version: %x.%02x\n",
+						version >> 8, version & 0xFF);
+
+	if (mode == 332)
+		par->fbtftops.write_vmem = write_vmem_8bit;
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	/* not used on this controller */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	u8 rotate;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* this controller rotates clock wise */
+	switch (par->info->var.rotate) {
+	case 90:
+		rotate = 27;
+		break;
+	case 180:
+		rotate = 18;
+		break;
+	case 270:
+		rotate = 9;
+		break;
+	default:
+		rotate = 0;
+	}
+	write_reg(par, CMD_LCD_ORIENTATION, rotate);
+
+	return 0;
+}
+
+static int verify_gpios(struct fbtft_par *par)
+{
+	if (par->gpio.reset < 0) {
+		dev_err(par->info->device, "Missing 'reset' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+#ifdef CONFIG_FB_BACKLIGHT
+static int backlight_chip_update_status(struct backlight_device *bd)
+{
+	struct fbtft_par *par = bl_get_data(bd);
+	int brightness = bd->props.brightness;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par,
+		"%s: brightness=%d, power=%d, fb_blank=%d\n",
+		__func__, bd->props.brightness, bd->props.power,
+		bd->props.fb_blank);
+
+	if (bd->props.power != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	write_reg(par, CMD_LCD_LED, brightness);
+
+	return 0;
+}
+
+static void register_chip_backlight(struct fbtft_par *par)
+{
+	struct backlight_device *bd;
+	struct backlight_properties bl_props = { 0, };
+	struct backlight_ops *bl_ops;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s()\n", __func__);
+
+	bl_ops = devm_kzalloc(par->info->device, sizeof(struct backlight_ops),
+				GFP_KERNEL);
+	if (!bl_ops) {
+		dev_err(par->info->device,
+			"%s: could not allocate memory for backlight operations.\n",
+			__func__);
+		return;
+	}
+
+	bl_ops->update_status = backlight_chip_update_status;
+	bl_props.type = BACKLIGHT_RAW;
+	bl_props.power = FB_BLANK_POWERDOWN;
+	bl_props.max_brightness = 100;
+	bl_props.brightness = DEFAULT_BRIGHTNESS;
+
+	bd = backlight_device_register(dev_driver_string(par->info->device),
+				par->info->device, par, bl_ops, &bl_props);
+	if (IS_ERR(bd)) {
+		dev_err(par->info->device,
+			"cannot register backlight device (%ld)\n",
+			PTR_ERR(bd));
+		return;
+	}
+	par->info->bl_dev = bd;
+
+	if (!par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
+}
+#else
+#define register_chip_backlight NULL
+#endif
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.buswidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fps = FPS,
+	.txbuflen = TXBUFLEN,
+	.fbtftops = {
+		.write_register = write_reg8_bus8,
+		.write_vmem = write_vmem,
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.verify_gpios = verify_gpios,
+		.register_backlight = register_chip_backlight,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "watterott,openlcd", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+
+MODULE_DESCRIPTION("FB driver for the Watterott LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/flexfb.c linux-rpi/drivers/staging/fbtft/flexfb.c
--- linux-3.18.10/drivers/staging/fbtft/flexfb.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/flexfb.c	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,592 @@
+/*
+ * Generic FB driver for TFT LCD displays
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME	    "flexfb"
+
+
+static char *chip;
+module_param(chip, charp, 0);
+MODULE_PARM_DESC(chip, "LCD controller");
+
+static unsigned int width;
+module_param(width, uint, 0);
+MODULE_PARM_DESC(width, "Display width");
+
+static unsigned int height;
+module_param(height, uint, 0);
+MODULE_PARM_DESC(height, "Display height");
+
+static int init[512];
+static int init_num;
+module_param_array(init, int, &init_num, 0);
+MODULE_PARM_DESC(init, "Init sequence");
+
+static unsigned int setaddrwin;
+module_param(setaddrwin, uint, 0);
+MODULE_PARM_DESC(setaddrwin, "Which set_addr_win() implementation to use");
+
+static unsigned int buswidth = 8;
+module_param(buswidth, uint, 0);
+MODULE_PARM_DESC(buswidth, "Width of databus (default: 8)");
+
+static unsigned int regwidth = 8;
+module_param(regwidth, uint, 0);
+MODULE_PARM_DESC(regwidth, "Width of controller register (default: 8)");
+
+static bool nobacklight;
+module_param(nobacklight, bool, 0);
+MODULE_PARM_DESC(nobacklight, "Turn off backlight functionality.");
+
+static bool latched;
+module_param(latched, bool, 0);
+MODULE_PARM_DESC(latched, "Use with latched 16-bit databus");
+
+
+static int *initp;
+static int initp_num;
+
+/* default init sequences */
+static int st7735r_init[] = { \
+-1,0x01,-2,150,-1,0x11,-2,500,-1,0xB1,0x01,0x2C,0x2D,-1,0xB2,0x01,0x2C,0x2D,-1,0xB3,0x01,0x2C,0x2D,0x01,0x2C,0x2D, \
+-1,0xB4,0x07,-1,0xC0,0xA2,0x02,0x84,-1,0xC1,0xC5,-1,0xC2,0x0A,0x00,-1,0xC3,0x8A,0x2A,-1,0xC4,0x8A,0xEE,-1,0xC5,0x0E, \
+-1,0x20,-1,0x36,0xC0,-1,0x3A,0x05,-1,0xE0,0x0f,0x1a,0x0f,0x18,0x2f,0x28,0x20,0x22,0x1f,0x1b,0x23,0x37,0x00,0x07,0x02,0x10, \
+-1,0xE1,0x0f,0x1b,0x0f,0x17,0x33,0x2c,0x29,0x2e,0x30,0x30,0x39,0x3f,0x00,0x07,0x03,0x10,-1,0x29,-2,100,-1,0x13,-2,10,-3 };
+
+static int ssd1289_init[] = { \
+-1,0x00,0x0001,-1,0x03,0xA8A4,-1,0x0C,0x0000,-1,0x0D,0x080C,-1,0x0E,0x2B00,-1,0x1E,0x00B7,-1,0x01,0x2B3F,-1,0x02,0x0600, \
+-1,0x10,0x0000,-1,0x11,0x6070,-1,0x05,0x0000,-1,0x06,0x0000,-1,0x16,0xEF1C,-1,0x17,0x0003,-1,0x07,0x0233,-1,0x0B,0x0000, \
+-1,0x0F,0x0000,-1,0x41,0x0000,-1,0x42,0x0000,-1,0x48,0x0000,-1,0x49,0x013F,-1,0x4A,0x0000,-1,0x4B,0x0000,-1,0x44,0xEF00, \
+-1,0x45,0x0000,-1,0x46,0x013F,-1,0x30,0x0707,-1,0x31,0x0204,-1,0x32,0x0204,-1,0x33,0x0502,-1,0x34,0x0507,-1,0x35,0x0204, \
+-1,0x36,0x0204,-1,0x37,0x0502,-1,0x3A,0x0302,-1,0x3B,0x0302,-1,0x23,0x0000,-1,0x24,0x0000,-1,0x25,0x8000,-1,0x4f,0x0000, \
+-1,0x4e,0x0000,-1,0x22,-3 };
+
+static int hx8340bn_init[] = { \
+-1,0xC1,0xFF,0x83,0x40,-1,0x11,-2,150,-1,0xCA,0x70,0x00,0xD9,-1,0xB0,0x01,0x11, \
+-1,0xC9,0x90,0x49,0x10,0x28,0x28,0x10,0x00,0x06,-2,20,-1,0xC2,0x60,0x71,0x01,0x0E,0x05,0x02,0x09,0x31,0x0A, \
+-1,0xC3,0x67,0x30,0x61,0x17,0x48,0x07,0x05,0x33,-2,10,-1,0xB5,0x35,0x20,0x45,-1,0xB4,0x33,0x25,0x4C,-2,10, \
+-1,0x3A,0x05,-1,0x29,-2,10,-3 };
+
+static int ili9225_init[] = { \
+-1,0x0001,0x011C,-1,0x0002,0x0100,-1,0x0003,0x1030,-1,0x0008,0x0808,-1,0x000C,0x0000,-1,0x000F,0x0A01,-1,0x0020,0x0000, \
+-1,0x0021,0x0000,-2,50,-1,0x0010,0x0A00,-1,0x0011,0x1038,-2,50,-1,0x0012,0x1121,-1,0x0013,0x004E,-1,0x0014,0x676F, \
+-1,0x0030,0x0000,-1,0x0031,0x00DB,-1,0x0032,0x0000,-1,0x0033,0x0000,-1,0x0034,0x00DB,-1,0x0035,0x0000,-1,0x0036,0x00AF, \
+-1,0x0037,0x0000,-1,0x0038,0x00DB,-1,0x0039,0x0000,-1,0x0050,0x0000,-1,0x0051,0x060A,-1,0x0052,0x0D0A,-1,0x0053,0x0303, \
+-1,0x0054,0x0A0D,-1,0x0055,0x0A06,-1,0x0056,0x0000,-1,0x0057,0x0303,-1,0x0058,0x0000,-1,0x0059,0x0000,-2,50, \
+-1,0x0007,0x1017,-2,50,-3 };
+
+static int ili9320_init[] = { \
+-1,0x00E5,0x8000,-1,0x0000,0x0001,-1,0x0001,0x0100,-1,0x0002,0x0700,-1,0x0003,0x1030,-1,0x0004,0x0000,-1,0x0008,0x0202, \
+-1,0x0009,0x0000,-1,0x000A,0x0000,-1,0x000C,0x0000,-1,0x000D,0x0000,-1,0x000F,0x0000,-1,0x0010,0x0000,-1,0x0011,0x0007, \
+-1,0x0012,0x0000,-1,0x0013,0x0000,-2,200,-1,0x0010,0x17B0,-1,0x0011,0x0031,-2,50,-1,0x0012,0x0138,-2,50,-1,0x0013,0x1800, \
+-1,0x0029,0x0008,-2,50,-1,0x0020,0x0000,-1,0x0021,0x0000,-1,0x0030,0x0000,-1,0x0031,0x0505,-1,0x0032,0x0004, \
+-1,0x0035,0x0006,-1,0x0036,0x0707,-1,0x0037,0x0105,-1,0x0038,0x0002,-1,0x0039,0x0707,-1,0x003C,0x0704,-1,0x003D,0x0807, \
+-1,0x0050,0x0000,-1,0x0051,0x00EF,-1,0x0052,0x0000,-1,0x0053,0x013F,-1,0x0060,0x2700,-1,0x0061,0x0001,-1,0x006A,0x0000, \
+-1,0x0080,0x0000,-1,0x0081,0x0000,-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000,-1,0x0085,0x0000,-1,0x0090,0x0010, \
+-1,0x0092,0x0000,-1,0x0093,0x0003,-1,0x0095,0x0110,-1,0x0097,0x0000,-1,0x0098,0x0000,-1,0x0007,0x0173,-3 };
+
+static int ili9325_init[] = { \
+-1,0x00E3,0x3008,-1,0x00E7,0x0012,-1,0x00EF,0x1231,-1,0x0001,0x0100,-1,0x0002,0x0700,-1,0x0003,0x1030,-1,0x0004,0x0000, \
+-1,0x0008,0x0207,-1,0x0009,0x0000,-1,0x000A,0x0000,-1,0x000C,0x0000,-1,0x000D,0x0000,-1,0x000F,0x0000,-1,0x0010,0x0000, \
+-1,0x0011,0x0007,-1,0x0012,0x0000,-1,0x0013,0x0000,-2,200,-1,0x0010,0x1690,-1,0x0011,0x0223,-2,50,-1,0x0012,0x000D,-2,50, \
+-1,0x0013,0x1200,-1,0x0029,0x000A,-1,0x002B,0x000C,-2,50,-1,0x0020,0x0000,-1,0x0021,0x0000,-1,0x0030,0x0000, \
+-1,0x0031,0x0506,-1,0x0032,0x0104,-1,0x0035,0x0207,-1,0x0036,0x000F,-1,0x0037,0x0306,-1,0x0038,0x0102,-1,0x0039,0x0707, \
+-1,0x003C,0x0702,-1,0x003D,0x1604,-1,0x0050,0x0000,-1,0x0051,0x00EF,-1,0x0052,0x0000,-1,0x0053,0x013F,-1,0x0060,0xA700, \
+-1,0x0061,0x0001,-1,0x006A,0x0000,-1,0x0080,0x0000,-1,0x0081,0x0000,-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000, \
+-1,0x0085,0x0000,-1,0x0090,0x0010,-1,0x0092,0x0600,-1,0x0007,0x0133,-3 };
+
+static int ili9341_init[] = { \
+-1,0x28,-2,20,-1,0xCF,0x00,0x83,0x30,-1,0xED,0x64,0x03,0x12,0x81,-1,0xE8,0x85,0x01,0x79, \
+-1,0xCB,0x39,0x2c,0x00,0x34,0x02,-1,0xF7,0x20,-1,0xEA,0x00,0x00,-1,0xC0,0x26,-1,0xC1,0x11, \
+-1,0xC5,0x35,0x3E,-1,0xC7,0xBE,-1,0xB1,0x00,0x1B,-1,0xB6,0x0a,0x82,0x27,0x00,-1,0xB7,0x07, \
+-1,0x3A,0x55,-1,0x36,0x48,-1,0x11,-2,120,-1,0x29,-2,20,-3 };
+
+static int ssd1351_init[] = { -1,0xfd,0x12,-1,0xfd,0xb1,-1,0xae,-1,0xb3,0xf1,-1,0xca,0x7f,-1,0xa0,0x74, \
+                              -1,0x15,0x00,0x7f,-1,0x75,0x00,0x7f,-1,0xa1,0x00,-1,0xa2,0x00,-1,0xb5,0x00, \
+                              -1,0xab,0x01,-1,0xb1,0x32,-1,0xb4,0xa0,0xb5,0x55,-1,0xbb,0x17,-1,0xbe,0x05, \
+                              -1,0xc1,0xc8,0x80,0xc8,-1,0xc7,0x0f,-1,0xb6,0x01,-1,0xa6,-1,0xaf,-3 };
+
+
+/* ili9320, ili9325 */
+static void flexfb_set_addr_win_1(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0020, xs);
+		write_reg(par, 0x0021, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0020, width - 1 - xs);
+		write_reg(par, 0x0021, height - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0020, width - 1 - ys);
+		write_reg(par, 0x0021, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0020, ys);
+		write_reg(par, 0x0021, height - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+}
+
+/* ssd1289 */
+static void flexfb_set_addr_win_2(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	switch (par->info->var.rotate) {
+	/* R4Eh - Set GDDRAM X address counter */
+	/* R4Fh - Set GDDRAM Y address counter */
+	case 0:
+		write_reg(par, 0x4e, xs);
+		write_reg(par, 0x4f, ys);
+		break;
+	case 180:
+		write_reg(par, 0x4e, par->info->var.xres - 1 - xs);
+		write_reg(par, 0x4f, par->info->var.yres - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x4e, par->info->var.yres - 1 - ys);
+		write_reg(par, 0x4f, xs);
+		break;
+	case 90:
+		write_reg(par, 0x4e, ys);
+		write_reg(par, 0x4f, par->info->var.xres - 1 - xs);
+		break;
+	}
+
+	/* R22h - RAM data write */
+	write_reg(par, 0x22, 0);
+}
+
+/* ssd1351 */
+static void set_addr_win_3(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, 0x15, xs, xe);
+	write_reg(par, 0x75, ys, ye);
+	write_reg(par, 0x5C);
+}
+
+static int flexfb_verify_gpios_dc(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
+
+	if (par->gpio.dc < 0) {
+		dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int flexfb_verify_gpios_db(struct fbtft_par *par)
+{
+	int i;
+	int num_db = buswidth;
+
+	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
+
+	if (par->gpio.dc < 0) {
+		dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (par->gpio.wr < 0) {
+		dev_err(par->info->device, "Missing info about 'wr' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (latched && (par->gpio.latch < 0)) {
+		dev_err(par->info->device, "Missing info about 'latch' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (latched)
+		num_db=buswidth/2;
+	for (i=0;i < num_db;i++) {
+		if (par->gpio.db[i] < 0) {
+			dev_err(par->info->device, "Missing info about 'db%02d' gpio. Aborting.\n", i);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static struct fbtft_display flex_display = { };
+
+static int flexfb_probe_common(struct spi_device *sdev, struct platform_device *pdev)
+{
+	struct device *dev;
+	struct fb_info *info;
+	struct fbtft_par *par;
+	int ret;
+
+	initp = init;
+	initp_num = init_num;
+
+	if (sdev)
+		dev = &sdev->dev;
+	else
+		dev = &pdev->dev;
+
+	fbtft_init_dbg(dev, "%s(%s)\n", __func__, sdev ? "'SPI device'" : "'Platform device'");
+
+	if (chip) {
+
+		if (!strcmp(chip, "st7735r")) {
+			if (!width)
+				width = 128;
+			if (!height)
+				height = 160;
+			if (init_num == 0) {
+				initp = st7735r_init;
+				initp_num = ARRAY_SIZE(st7735r_init);
+			}
+
+
+		} else if (!strcmp(chip, "hx8340bn")) {
+			if (!width)
+				width = 176;
+			if (!height)
+				height = 220;
+			setaddrwin = 0;
+			if (init_num == 0) {
+				initp = hx8340bn_init;
+				initp_num = ARRAY_SIZE(hx8340bn_init);
+			}
+
+
+		} else if (!strcmp(chip, "ili9225")) {
+			if (!width)
+				width = 176;
+			if (!height)
+				height = 220;
+			setaddrwin = 0;
+			regwidth = 16;
+			if (init_num == 0) {
+				initp = ili9225_init;
+				initp_num = ARRAY_SIZE(ili9225_init);
+			}
+
+
+
+		} else if (!strcmp(chip, "ili9320")) {
+			if (!width)
+				width = 240;
+			if (!height)
+				height = 320;
+			setaddrwin = 1;
+			regwidth = 16;
+			if (init_num == 0) {
+				initp = ili9320_init;
+				initp_num = ARRAY_SIZE(ili9320_init);
+			}
+
+
+		} else if (!strcmp(chip, "ili9325")) {
+			if (!width)
+				width = 240;
+			if (!height)
+				height = 320;
+			setaddrwin = 1;
+			regwidth = 16;
+			if (init_num == 0) {
+				initp = ili9325_init;
+				initp_num = ARRAY_SIZE(ili9325_init);
+			}
+
+		} else if (!strcmp(chip, "ili9341")) {
+			if (!width)
+				width = 240;
+			if (!height)
+				height = 320;
+			setaddrwin = 0;
+			regwidth = 8;
+			if (init_num == 0) {
+				initp = ili9341_init;
+				initp_num = ARRAY_SIZE(ili9341_init);
+			}
+
+
+		} else if (!strcmp(chip, "ssd1289")) {
+			if (!width)
+				width = 240;
+			if (!height)
+				height = 320;
+			setaddrwin = 2;
+			regwidth = 16;
+			if (init_num == 0) {
+				initp = ssd1289_init;
+				initp_num = ARRAY_SIZE(ssd1289_init);
+			}
+
+
+
+		} else if (!strcmp(chip, "ssd1351")) {
+			if (!width)
+				width = 128;
+			if (!height)
+				height = 128;
+			setaddrwin = 3;
+			if (init_num == 0) {
+				initp = ssd1351_init;
+				initp_num = ARRAY_SIZE(ssd1351_init);
+			}
+		} else {
+			dev_err(dev, "chip=%s is not supported\n", chip);
+			return -EINVAL;
+		}
+	}
+
+	if (width == 0 || height == 0) {
+		dev_err(dev, "argument(s) missing: width and height has to be set.\n");
+		return -EINVAL;
+	}
+	flex_display.width = width;
+	flex_display.height = height;
+	fbtft_init_dbg(dev, "Display resolution: %dx%d\n", width, height);
+	fbtft_init_dbg(dev, "chip = %s\n", chip ? chip : "not set");
+	fbtft_init_dbg(dev, "setaddrwin = %d\n", setaddrwin);
+	fbtft_init_dbg(dev, "regwidth = %d\n", regwidth);
+	fbtft_init_dbg(dev, "buswidth = %d\n", buswidth);
+
+	info = fbtft_framebuffer_alloc(&flex_display, dev);
+	if (!info)
+		return -ENOMEM;
+
+	par = info->par;
+	if (sdev)
+		par->spi = sdev;
+	else
+		par->pdev = pdev;
+	if (!par->init_sequence)
+		par->init_sequence = initp;
+	par->fbtftops.init_display = fbtft_init_display;
+
+	/* registerwrite functions */
+	switch (regwidth) {
+	case 8:
+		par->fbtftops.write_register = fbtft_write_reg8_bus8;
+		break;
+	case 16:
+		par->fbtftops.write_register = fbtft_write_reg16_bus8;
+		break;
+	default:
+		dev_err(dev, "argument 'regwidth': %d is not supported.\n", regwidth);
+		return -EINVAL;
+	}
+
+	/* bus functions */
+	if (sdev) {
+		par->fbtftops.write = fbtft_write_spi;
+		switch (buswidth) {
+		case 8:
+			par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
+			if (!par->startbyte)
+				par->fbtftops.verify_gpios = flexfb_verify_gpios_dc;
+			break;
+		case 9:
+			if (regwidth == 16) {
+				dev_err(dev, "argument 'regwidth': %d is not supported with buswidth=%d and SPI.\n", regwidth, buswidth);
+				return -EINVAL;
+			}
+			par->fbtftops.write_register = fbtft_write_reg8_bus9;
+			par->fbtftops.write_vmem = fbtft_write_vmem16_bus9;
+			sdev->bits_per_word=9;
+			ret = sdev->master->setup(sdev);
+			if (ret) {
+				dev_warn(dev,
+					"9-bit SPI not available, emulating using 8-bit.\n");
+				sdev->bits_per_word = 8;
+				ret = sdev->master->setup(sdev);
+				if (ret)
+					goto out_release;
+				/* allocate buffer with room for dc bits */
+				par->extra = devm_kzalloc(par->info->device,
+						par->txbuf.len + (par->txbuf.len / 8) + 8,
+						GFP_KERNEL);
+				if (!par->extra) {
+					ret = -ENOMEM;
+					goto out_release;
+				}
+				par->fbtftops.write = fbtft_write_spi_emulate_9;
+			}
+			break;
+		default:
+			dev_err(dev, "argument 'buswidth': %d is not supported with SPI.\n", buswidth);
+			return -EINVAL;
+		}
+	} else {
+		par->fbtftops.verify_gpios = flexfb_verify_gpios_db;
+		switch (buswidth) {
+		case 8:
+			par->fbtftops.write = fbtft_write_gpio8_wr;
+			par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
+			break;
+		case 16:
+			par->fbtftops.write_register = fbtft_write_reg16_bus16;
+			if (latched)
+				par->fbtftops.write = fbtft_write_gpio16_wr_latched;
+			else
+				par->fbtftops.write = fbtft_write_gpio16_wr;
+			par->fbtftops.write_vmem = fbtft_write_vmem16_bus16;
+			break;
+		default:
+			dev_err(dev, "argument 'buswidth': %d is not supported with parallel.\n", buswidth);
+			return -EINVAL;
+		}
+	}
+
+	/* set_addr_win function */
+	switch (setaddrwin) {
+	case 0:
+		/* use default */
+		break;
+	case 1:
+		par->fbtftops.set_addr_win = flexfb_set_addr_win_1;
+		break;
+	case 2:
+		par->fbtftops.set_addr_win = flexfb_set_addr_win_2;
+		break;
+	case 3:
+		par->fbtftops.set_addr_win = set_addr_win_3;
+		break;
+	default:
+		dev_err(dev, "argument 'setaddrwin': unknown value %d.\n", setaddrwin);
+		return -EINVAL;
+	}
+
+	if (!nobacklight)
+		par->fbtftops.register_backlight = fbtft_register_backlight;
+
+	ret = fbtft_register_framebuffer(info);
+	if (ret < 0)
+		goto out_release;
+
+	return 0;
+
+out_release:
+	fbtft_framebuffer_release(info);
+
+	return ret;
+}
+
+static int flexfb_remove_common(struct device *dev, struct fb_info *info)
+{
+	struct fbtft_par *par;
+
+	if (!info)
+		return -EINVAL;
+	par = info->par;
+	if (par)
+		fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par,
+			"%s()\n", __func__);
+	fbtft_unregister_framebuffer(info);
+	fbtft_framebuffer_release(info);
+
+	return 0;
+}
+
+static int flexfb_probe_spi(struct spi_device *spi)
+{
+	return flexfb_probe_common(spi, NULL);
+}
+
+static int flexfb_remove_spi(struct spi_device *spi)
+{
+	struct fb_info *info = spi_get_drvdata(spi);
+
+	return flexfb_remove_common(&spi->dev, info);
+}
+
+static int flexfb_probe_pdev(struct platform_device *pdev)
+{
+	return flexfb_probe_common(NULL, pdev);
+}
+
+static int flexfb_remove_pdev(struct platform_device *pdev)
+{
+	struct fb_info *info = platform_get_drvdata(pdev);
+
+	return flexfb_remove_common(&pdev->dev, info);
+}
+
+static struct spi_driver flexfb_spi_driver = {
+	.driver = {
+		.name   = DRVNAME,
+		.owner  = THIS_MODULE,
+	},
+	.probe  = flexfb_probe_spi,
+	.remove = flexfb_remove_spi,
+};
+
+static const struct platform_device_id flexfb_platform_ids[] = {
+	{ "flexpfb", 0 },
+	{ },
+};
+
+static struct platform_driver flexfb_platform_driver = {
+	.driver = {
+		.name   = DRVNAME,
+	},
+	.id_table = flexfb_platform_ids,
+	.probe  = flexfb_probe_pdev,
+	.remove = flexfb_remove_pdev,
+};
+
+static int __init flexfb_init(void)
+{
+	int ret, ret2;
+
+	ret = spi_register_driver(&flexfb_spi_driver);
+	ret2 = platform_driver_register(&flexfb_platform_driver);
+	if (ret < 0)
+		return ret;
+	return ret2;
+}
+
+static void __exit flexfb_exit(void)
+{
+	spi_unregister_driver(&flexfb_spi_driver);
+	platform_driver_unregister(&flexfb_platform_driver);
+}
+
+/* ------------------------------------------------------------------------- */
+
+module_init(flexfb_init);
+module_exit(flexfb_exit);
+
+MODULE_DESCRIPTION("Generic FB driver for TFT LCD displays");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/staging/fbtft/Kconfig linux-rpi/drivers/staging/fbtft/Kconfig
--- linux-3.18.10/drivers/staging/fbtft/Kconfig	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/Kconfig	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,169 @@
+menuconfig FB_TFT
+	tristate "Support for small TFT LCD display modules"
+	depends on FB && SPI && GPIOLIB
+	select FB_SYS_FILLRECT
+	select FB_SYS_COPYAREA
+	select FB_SYS_IMAGEBLIT
+	select FB_SYS_FOPS
+	select FB_DEFERRED_IO
+	select FB_BACKLIGHT
+
+config FB_TFT_AGM1264K_FL
+	tristate "FB driver for the AGM1264K-FL LCD display"
+	depends on FB_TFT
+	help
+	  Framebuffer support for the AGM1264K-FL LCD display (two Samsung KS0108 compatable chips)
+
+config FB_TFT_BD663474
+	tristate "FB driver for the BD663474 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for BD663474
+
+config FB_TFT_HX8340BN
+	tristate "FB driver for the HX8340BN LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for HX8340BN
+
+config FB_TFT_HX8347D
+	tristate "FB driver for the HX8347D LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for HX8347D
+
+config FB_TFT_HX8353D
+	tristate "FB driver for the HX8353D LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for HX8353D
+
+config FB_TFT_ILI9320
+	tristate "FB driver for the ILI9320 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9320
+
+config FB_TFT_ILI9325
+	tristate "FB driver for the ILI9325 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9325
+
+config FB_TFT_ILI9340
+	tristate "FB driver for the ILI9340 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9340
+
+config FB_TFT_ILI9341
+	tristate "FB driver for the ILI9341 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9341
+
+config FB_TFT_ILI9481
+	tristate "FB driver for the ILI9481 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9481
+
+config FB_TFT_ILI9486
+	tristate "FB driver for the ILI9486 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9486
+
+config FB_TFT_PCD8544
+	tristate "FB driver for the PCD8544 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for PCD8544
+
+config FB_TFT_RA8875
+        tristate "FB driver for the RA8875 LCD Controller"
+        depends on FB_TFT
+	help
+	  Generic Framebuffer support for RA8875
+
+config FB_TFT_S6D02A1
+	tristate "FB driver for the S6D02A1 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for S6D02A1
+
+config FB_TFT_S6D1121
+	tristate "FB driver for the S6D1211 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for S6D1121
+
+config FB_TFT_SSD1289
+	tristate "FB driver for the SSD1289 LCD Controller"
+	depends on FB_TFT
+	help
+	  Framebuffer support for SSD1289
+
+config FB_TFT_SSD1306
+	tristate "FB driver for the SSD1306 OLED Controller"
+	depends on FB_TFT
+	help
+	  Framebuffer support for SSD1306
+
+config FB_TFT_SSD1331
+	tristate "FB driver for the SSD1331 LCD Controller"
+	depends on FB_TFT
+	help
+	  Framebuffer support for SSD1331
+
+config FB_TFT_SSD1351
+	tristate "FB driver for the SSD1351 LCD Controller"
+	depends on FB_TFT
+	help
+	  Framebuffer support for SSD1351
+
+config FB_TFT_ST7735R
+	tristate "FB driver for the ST7735R LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ST7735R
+
+config FB_TFT_TINYLCD
+	tristate "FB driver for tinylcd.com display"
+	depends on FB_TFT
+	help
+	  Custom Framebuffer support for tinylcd.com display
+
+config FB_TFT_TLS8204
+	tristate "FB driver for the TLS8204 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for TLS8204
+
+config FB_TFT_UC1701
+	tristate "FB driver for the UC1701 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for UC1701
+
+config FB_TFT_UPD161704
+	tristate "FB driver for the uPD161704 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for uPD161704
+
+config FB_TFT_WATTEROTT
+	tristate "FB driver for the WATTEROTT LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for WATTEROTT
+
+config FB_FLEX
+	tristate "Generic FB driver for TFT LCD displays"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for TFT LCD displays.
+
+config FB_TFT_FBTFT_DEVICE
+	tristate "Module to for adding FBTFT devices"
+	depends on FB_TFT
diff -Nur linux-3.18.10/drivers/staging/fbtft/Makefile linux-rpi/drivers/staging/fbtft/Makefile
--- linux-3.18.10/drivers/staging/fbtft/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/Makefile	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,34 @@
+# Core module
+obj-$(CONFIG_FB_TFT)             += fbtft.o
+fbtft-y                          += fbtft-core.o fbtft-sysfs.o fbtft-bus.o fbtft-io.o
+
+# drivers
+obj-$(CONFIG_FB_TFT_AGM1264K_FL) += fb_agm1264k-fl.o
+obj-$(CONFIG_FB_TFT_BD663474)    += fb_bd663474.o
+obj-$(CONFIG_FB_TFT_HX8340BN)    += fb_hx8340bn.o
+obj-$(CONFIG_FB_TFT_HX8347D)     += fb_hx8347d.o
+obj-$(CONFIG_FB_TFT_HX8353D)     += fb_hx8353d.o
+obj-$(CONFIG_FB_TFT_ILI9320)     += fb_ili9320.o
+obj-$(CONFIG_FB_TFT_ILI9325)     += fb_ili9325.o
+obj-$(CONFIG_FB_TFT_ILI9340)     += fb_ili9340.o
+obj-$(CONFIG_FB_TFT_ILI9341)     += fb_ili9341.o
+obj-$(CONFIG_FB_TFT_ILI9481)     += fb_ili9481.o
+obj-$(CONFIG_FB_TFT_ILI9486)     += fb_ili9486.o
+obj-$(CONFIG_FB_TFT_PCD8544)     += fb_pcd8544.o
+obj-$(CONFIG_FB_TFT_RA8875)      += fb_ra8875.o
+obj-$(CONFIG_FB_TFT_S6D02A1)     += fb_s6d02a1.o
+obj-$(CONFIG_FB_TFT_S6D1121)     += fb_s6d1121.o
+obj-$(CONFIG_FB_TFT_SSD1289)     += fb_ssd1289.o
+obj-$(CONFIG_FB_TFT_SSD1306)     += fb_ssd1306.o
+obj-$(CONFIG_FB_TFT_SSD1331)     += fb_ssd1331.o
+obj-$(CONFIG_FB_TFT_SSD1351)     += fb_ssd1351.o
+obj-$(CONFIG_FB_TFT_ST7735R)     += fb_st7735r.o
+obj-$(CONFIG_FB_TFT_TINYLCD)     += fb_tinylcd.o
+obj-$(CONFIG_FB_TFT_TLS8204)     += fb_tls8204.o
+obj-$(CONFIG_FB_TFT_UC1701)      += fb_uc1701.o
+obj-$(CONFIG_FB_TFT_UPD161704)   += fb_upd161704.o
+obj-$(CONFIG_FB_TFT_WATTEROTT)   += fb_watterott.o
+obj-$(CONFIG_FB_FLEX)            += flexfb.o
+
+# Device modules
+obj-$(CONFIG_FB_TFT_FBTFT_DEVICE) += fbtft_device.o
diff -Nur linux-3.18.10/drivers/staging/fbtft/README linux-rpi/drivers/staging/fbtft/README
--- linux-3.18.10/drivers/staging/fbtft/README	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/fbtft/README	2015-03-26 11:46:54.000237917 +0100
@@ -0,0 +1,32 @@
+  FBTFT
+=========
+
+Linux Framebuffer drivers for small TFT LCD display modules.
+The module 'fbtft' makes writing drivers for some of these displays very easy.
+
+Development is done on a Raspberry Pi running the Raspbian "wheezy" distribution.
+
+INSTALLATION
+  Download kernel sources
+
+  From Linux 3.15
+    cd drivers/video/fbdev/fbtft
+    git clone https://github.com/notro/fbtft.git
+
+    Add to drivers/video/fbdev/Kconfig:   source "drivers/video/fbdev/fbtft/Kconfig"
+    Add to drivers/video/fbdev/Makefile:  obj-y += fbtft/
+
+  Before Linux 3.15
+    cd drivers/video
+    git clone https://github.com/notro/fbtft.git
+
+    Add to drivers/video/Kconfig:   source "drivers/video/fbtft/Kconfig"
+    Add to drivers/video/Makefile:  obj-y += fbtft/
+
+  Enable driver(s) in menuconfig and build the kernel
+
+
+See wiki for more information: https://github.com/notro/fbtft/wiki
+
+
+Source: https://github.com/notro/fbtft/
diff -Nur linux-3.18.10/drivers/staging/Kconfig linux-rpi/drivers/staging/Kconfig
--- linux-3.18.10/drivers/staging/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/staging/Kconfig	2015-03-26 11:46:53.888237809 +0100
@@ -108,4 +108,6 @@
 
 source "drivers/staging/unisys/Kconfig"
 
+source "drivers/staging/fbtft/Kconfig"
+
 endif # STAGING
diff -Nur linux-3.18.10/drivers/staging/Makefile linux-rpi/drivers/staging/Makefile
--- linux-3.18.10/drivers/staging/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/staging/Makefile	2015-03-26 11:46:53.888237809 +0100
@@ -46,3 +46,4 @@
 obj-$(CONFIG_GS_FPGABOOT)	+= gs_fpgaboot/
 obj-$(CONFIG_CRYPTO_SKEIN)	+= skein/
 obj-$(CONFIG_UNISYSSPAR)	+= unisys/
+obj-$(CONFIG_FB_TFT)		+= fbtft/
diff -Nur linux-3.18.10/drivers/staging/media/lirc/Kconfig linux-rpi/drivers/staging/media/lirc/Kconfig
--- linux-3.18.10/drivers/staging/media/lirc/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/staging/media/lirc/Kconfig	2015-03-26 11:46:54.056237968 +0100
@@ -38,6 +38,12 @@
 	help
 	  Driver for Homebrew Parallel Port Receivers
 
+config LIRC_RPI
+	tristate "Homebrew GPIO Port Receiver/Transmitter for the RaspberryPi"
+	depends on LIRC
+	help
+	  Driver for Homebrew GPIO Port Receiver/Transmitter for the RaspberryPi
+
 config LIRC_SASEM
 	tristate "Sasem USB IR Remote"
 	depends on LIRC && USB
diff -Nur linux-3.18.10/drivers/staging/media/lirc/lirc_rpi.c linux-rpi/drivers/staging/media/lirc/lirc_rpi.c
--- linux-3.18.10/drivers/staging/media/lirc/lirc_rpi.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/staging/media/lirc/lirc_rpi.c	2015-03-26 11:46:54.056237968 +0100
@@ -0,0 +1,765 @@
+/*
+ * lirc_rpi.c
+ *
+ * lirc_rpi - Device driver that records pulse- and pause-lengths
+ *	      (space-lengths) (just like the lirc_serial driver does)
+ *	      between GPIO interrupt events on the Raspberry Pi.
+ *	      Lots of code has been taken from the lirc_serial module,
+ *	      so I would like say thanks to the authors.
+ *
+ * Copyright (C) 2012 Aron Robert Szabo <aron@reon.hu>,
+ *		      Michael Bishop <cleverca22@gmail.com>
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/time.h>
+#include <linux/timex.h>
+#include <linux/timekeeping.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/spinlock.h>
+#include <media/lirc.h>
+#include <media/lirc_dev.h>
+#include <mach/gpio.h>
+#include <linux/gpio.h>
+#include <linux/of_platform.h>
+
+#include <linux/platform_data/bcm2708.h>
+
+#define LIRC_DRIVER_NAME "lirc_rpi"
+#define RBUF_LEN 256
+#define LIRC_TRANSMITTER_LATENCY 50
+
+#ifndef MAX_UDELAY_MS
+#define MAX_UDELAY_US 5000
+#else
+#define MAX_UDELAY_US (MAX_UDELAY_MS*1000)
+#endif
+
+#define dprintk(fmt, args...)					\
+	do {							\
+		if (debug)					\
+			printk(KERN_DEBUG LIRC_DRIVER_NAME ": "	\
+			       fmt, ## args);			\
+	} while (0)
+
+/* module parameters */
+
+/* set the default GPIO input pin */
+static int gpio_in_pin = 18;
+/* set the default pull behaviour for input pin */
+static int gpio_in_pull = BCM2708_PULL_DOWN;
+/* set the default GPIO output pin */
+static int gpio_out_pin = 17;
+/* enable debugging messages */
+static bool debug;
+/* -1 = auto, 0 = active high, 1 = active low */
+static int sense = -1;
+/* use softcarrier by default */
+static bool softcarrier = 1;
+/* 0 = do not invert output, 1 = invert output */
+static bool invert = 0;
+
+struct gpio_chip *gpiochip;
+static int irq_num;
+
+/* forward declarations */
+static long send_pulse(unsigned long length);
+static void send_space(long length);
+static void lirc_rpi_exit(void);
+
+static struct platform_device *lirc_rpi_dev;
+static struct timeval lasttv = { 0, 0 };
+static struct lirc_buffer rbuf;
+static spinlock_t lock;
+
+/* initialized/set in init_timing_params() */
+static unsigned int freq = 38000;
+static unsigned int duty_cycle = 50;
+static unsigned long period;
+static unsigned long pulse_width;
+static unsigned long space_width;
+
+static void safe_udelay(unsigned long usecs)
+{
+	while (usecs > MAX_UDELAY_US) {
+		udelay(MAX_UDELAY_US);
+		usecs -= MAX_UDELAY_US;
+	}
+	udelay(usecs);
+}
+
+static unsigned long read_current_us(void)
+{
+	struct timespec now;
+	getnstimeofday(&now);
+	return (now.tv_sec * 1000000) + (now.tv_nsec/1000);
+}
+
+static int init_timing_params(unsigned int new_duty_cycle,
+	unsigned int new_freq)
+{
+	if (1000 * 1000000L / new_freq * new_duty_cycle / 100 <=
+	    LIRC_TRANSMITTER_LATENCY)
+		return -EINVAL;
+	if (1000 * 1000000L / new_freq * (100 - new_duty_cycle) / 100 <=
+	    LIRC_TRANSMITTER_LATENCY)
+		return -EINVAL;
+	duty_cycle = new_duty_cycle;
+	freq = new_freq;
+	period = 1000 * 1000000L / freq;
+	pulse_width = period * duty_cycle / 100;
+	space_width = period - pulse_width;
+	dprintk("in init_timing_params, freq=%d pulse=%ld, "
+		"space=%ld\n", freq, pulse_width, space_width);
+	return 0;
+}
+
+static long send_pulse_softcarrier(unsigned long length)
+{
+	int flag;
+	unsigned long actual, target;
+	unsigned long actual_us, initial_us, target_us;
+
+	length *= 1000;
+
+	actual = 0; target = 0; flag = 0;
+	actual_us = read_current_us();
+
+	while (actual < length) {
+		if (flag) {
+			gpiochip->set(gpiochip, gpio_out_pin, invert);
+			target += space_width;
+		} else {
+			gpiochip->set(gpiochip, gpio_out_pin, !invert);
+			target += pulse_width;
+		}
+		initial_us = actual_us;
+		target_us = actual_us + (target - actual) / 1000;
+		/*
+		 * Note - we've checked in ioctl that the pulse/space
+		 * widths are big enough so that d is > 0
+		 */
+		if  ((int)(target_us - actual_us) > 0)
+			udelay(target_us - actual_us);
+		actual_us = read_current_us();
+		actual += (actual_us - initial_us) * 1000;
+		flag = !flag;
+	}
+	return (actual-length) / 1000;
+}
+
+static long send_pulse(unsigned long length)
+{
+	if (length <= 0)
+		return 0;
+
+	if (softcarrier) {
+		return send_pulse_softcarrier(length);
+	} else {
+		gpiochip->set(gpiochip, gpio_out_pin, !invert);
+		safe_udelay(length);
+		return 0;
+	}
+}
+
+static void send_space(long length)
+{
+	gpiochip->set(gpiochip, gpio_out_pin, invert);
+	if (length <= 0)
+		return;
+	safe_udelay(length);
+}
+
+static void rbwrite(int l)
+{
+	if (lirc_buffer_full(&rbuf)) {
+		/* no new signals will be accepted */
+		dprintk("Buffer overrun\n");
+		return;
+	}
+	lirc_buffer_write(&rbuf, (void *)&l);
+}
+
+static void frbwrite(int l)
+{
+	/* simple noise filter */
+	static int pulse, space;
+	static unsigned int ptr;
+
+	if (ptr > 0 && (l & PULSE_BIT)) {
+		pulse += l & PULSE_MASK;
+		if (pulse > 250) {
+			rbwrite(space);
+			rbwrite(pulse | PULSE_BIT);
+			ptr = 0;
+			pulse = 0;
+		}
+		return;
+	}
+	if (!(l & PULSE_BIT)) {
+		if (ptr == 0) {
+			if (l > 20000) {
+				space = l;
+				ptr++;
+				return;
+			}
+		} else {
+			if (l > 20000) {
+				space += pulse;
+				if (space > PULSE_MASK)
+					space = PULSE_MASK;
+				space += l;
+				if (space > PULSE_MASK)
+					space = PULSE_MASK;
+				pulse = 0;
+				return;
+			}
+			rbwrite(space);
+			rbwrite(pulse | PULSE_BIT);
+			ptr = 0;
+			pulse = 0;
+		}
+	}
+	rbwrite(l);
+}
+
+static irqreturn_t irq_handler(int i, void *blah, struct pt_regs *regs)
+{
+	struct timeval tv;
+	long deltv;
+	int data;
+	int signal;
+
+	/* use the GPIO signal level */
+	signal = gpiochip->get(gpiochip, gpio_in_pin);
+
+	if (sense != -1) {
+		/* get current time */
+		do_gettimeofday(&tv);
+
+		/* calc time since last interrupt in microseconds */
+		deltv = tv.tv_sec-lasttv.tv_sec;
+		if (tv.tv_sec < lasttv.tv_sec ||
+		    (tv.tv_sec == lasttv.tv_sec &&
+		     tv.tv_usec < lasttv.tv_usec)) {
+			printk(KERN_WARNING LIRC_DRIVER_NAME
+			       ": AIEEEE: your clock just jumped backwards\n");
+			printk(KERN_WARNING LIRC_DRIVER_NAME
+			       ": %d %d %lx %lx %lx %lx\n", signal, sense,
+			       tv.tv_sec, lasttv.tv_sec,
+			       tv.tv_usec, lasttv.tv_usec);
+			data = PULSE_MASK;
+		} else if (deltv > 15) {
+			data = PULSE_MASK; /* really long time */
+			if (!(signal^sense)) {
+				/* sanity check */
+				printk(KERN_WARNING LIRC_DRIVER_NAME
+				       ": AIEEEE: %d %d %lx %lx %lx %lx\n",
+				       signal, sense, tv.tv_sec, lasttv.tv_sec,
+				       tv.tv_usec, lasttv.tv_usec);
+				/*
+				 * detecting pulse while this
+				 * MUST be a space!
+				 */
+				sense = sense ? 0 : 1;
+			}
+		} else {
+			data = (int) (deltv*1000000 +
+				      (tv.tv_usec - lasttv.tv_usec));
+		}
+		frbwrite(signal^sense ? data : (data|PULSE_BIT));
+		lasttv = tv;
+		wake_up_interruptible(&rbuf.wait_poll);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int is_right_chip(struct gpio_chip *chip, void *data)
+{
+	dprintk("is_right_chip %s %d\n", chip->label, strcmp(data, chip->label));
+
+	if (strcmp(data, chip->label) == 0)
+		return 1;
+	return 0;
+}
+
+static inline int read_bool_property(const struct device_node *np,
+				     const char *propname,
+				     bool *out_value)
+{
+	u32 value = 0;
+	int err = of_property_read_u32(np, propname, &value);
+	if (err == 0)
+		*out_value = (value != 0);
+	return err;
+}
+
+static void read_pin_settings(struct device_node *node)
+{
+	u32 pin;
+	int index;
+
+	for (index = 0;
+	     of_property_read_u32_index(
+		     node,
+		     "brcm,pins",
+		     index,
+		     &pin) == 0;
+	     index++) {
+		u32 function;
+		int err;
+		err = of_property_read_u32_index(
+			node,
+			"brcm,function",
+			index,
+			&function);
+		if (err == 0) {
+			if (function == 1) /* Output */
+				gpio_out_pin = pin;
+			else if (function == 0) /* Input */
+				gpio_in_pin = pin;
+		}
+	}
+}
+
+static int init_port(void)
+{
+	int i, nlow, nhigh, ret;
+	struct device_node *node;
+
+	node = lirc_rpi_dev->dev.of_node;
+
+	gpiochip = gpiochip_find("bcm2708_gpio", is_right_chip);
+
+	/*
+	 * Because of the lack of a setpull function, only support
+	 * pinctrl-bcm2835 if using device tree.
+	*/
+	if (!gpiochip && node)
+		gpiochip = gpiochip_find("pinctrl-bcm2835", is_right_chip);
+
+	if (!gpiochip) {
+		pr_err(LIRC_DRIVER_NAME ": gpio chip not found!\n");
+		return -ENODEV;
+	}
+
+	if (node) {
+		struct device_node *pins_node;
+
+		pins_node = of_parse_phandle(node, "pinctrl-0", 0);
+		if (!pins_node) {
+			printk(KERN_ERR LIRC_DRIVER_NAME
+			       ": pinctrl settings not found!\n");
+			ret = -EINVAL;
+			goto exit_init_port;
+		}
+
+		read_pin_settings(pins_node);
+
+		of_property_read_u32(node, "rpi,sense", &sense);
+
+		read_bool_property(node, "rpi,softcarrier", &softcarrier);
+
+		read_bool_property(node, "rpi,invert", &invert);
+
+		read_bool_property(node, "rpi,debug", &debug);
+
+	}
+	else
+	{
+		if (gpio_in_pin >= BCM2708_NR_GPIOS ||
+		    gpio_out_pin >= BCM2708_NR_GPIOS) {
+			ret = -EINVAL;
+			printk(KERN_ERR LIRC_DRIVER_NAME
+			       ": invalid GPIO pin(s) specified!\n");
+			goto exit_init_port;
+		}
+
+		if (gpio_request(gpio_out_pin, LIRC_DRIVER_NAME " ir/out")) {
+			printk(KERN_ALERT LIRC_DRIVER_NAME
+			       ": cant claim gpio pin %d\n", gpio_out_pin);
+			ret = -ENODEV;
+			goto exit_init_port;
+		}
+
+		if (gpio_request(gpio_in_pin, LIRC_DRIVER_NAME " ir/in")) {
+			printk(KERN_ALERT LIRC_DRIVER_NAME
+			       ": cant claim gpio pin %d\n", gpio_in_pin);
+			ret = -ENODEV;
+			goto exit_gpio_free_out_pin;
+		}
+
+		bcm2708_gpio_setpull(gpiochip, gpio_in_pin, gpio_in_pull);
+		gpiochip->direction_input(gpiochip, gpio_in_pin);
+		gpiochip->direction_output(gpiochip, gpio_out_pin, 1);
+	}
+
+	gpiochip->set(gpiochip, gpio_out_pin, invert);
+
+	irq_num = gpiochip->to_irq(gpiochip, gpio_in_pin);
+	dprintk("to_irq %d\n", irq_num);
+
+	/* if pin is high, then this must be an active low receiver. */
+	if (sense == -1) {
+		/* wait 1/2 sec for the power supply */
+		msleep(500);
+
+		/*
+		 * probe 9 times every 0.04s, collect "votes" for
+		 * active high/low
+		 */
+		nlow = 0;
+		nhigh = 0;
+		for (i = 0; i < 9; i++) {
+			if (gpiochip->get(gpiochip, gpio_in_pin))
+				nlow++;
+			else
+				nhigh++;
+			msleep(40);
+		}
+		sense = (nlow >= nhigh ? 1 : 0);
+		printk(KERN_INFO LIRC_DRIVER_NAME
+		       ": auto-detected active %s receiver on GPIO pin %d\n",
+		       sense ? "low" : "high", gpio_in_pin);
+	} else {
+		printk(KERN_INFO LIRC_DRIVER_NAME
+		       ": manually using active %s receiver on GPIO pin %d\n",
+		       sense ? "low" : "high", gpio_in_pin);
+	}
+
+	return 0;
+
+	exit_gpio_free_out_pin:
+	gpio_free(gpio_out_pin);
+
+	exit_init_port:
+	return ret;
+}
+
+// called when the character device is opened
+static int set_use_inc(void *data)
+{
+	int result;
+
+	/* initialize timestamp */
+	do_gettimeofday(&lasttv);
+
+	result = request_irq(irq_num,
+			     (irq_handler_t) irq_handler,
+			     IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING,
+			     LIRC_DRIVER_NAME, (void*) 0);
+
+	switch (result) {
+	case -EBUSY:
+		printk(KERN_ERR LIRC_DRIVER_NAME
+		       ": IRQ %d is busy\n",
+		       irq_num);
+		return -EBUSY;
+	case -EINVAL:
+		printk(KERN_ERR LIRC_DRIVER_NAME
+		       ": Bad irq number or handler\n");
+		return -EINVAL;
+	default:
+		dprintk("Interrupt %d obtained\n",
+			irq_num);
+		break;
+	};
+
+	/* initialize pulse/space widths */
+	init_timing_params(duty_cycle, freq);
+
+	return 0;
+}
+
+static void set_use_dec(void *data)
+{
+	/* GPIO Pin Falling/Rising Edge Detect Disable */
+	irq_set_irq_type(irq_num, 0);
+	disable_irq(irq_num);
+
+	free_irq(irq_num, (void *) 0);
+
+	dprintk(KERN_INFO LIRC_DRIVER_NAME
+		": freed IRQ %d\n", irq_num);
+}
+
+static ssize_t lirc_write(struct file *file, const char *buf,
+	size_t n, loff_t *ppos)
+{
+	int i, count;
+	unsigned long flags;
+	long delta = 0;
+	int *wbuf;
+
+	count = n / sizeof(int);
+	if (n % sizeof(int) || count % 2 == 0)
+		return -EINVAL;
+	wbuf = memdup_user(buf, n);
+	if (IS_ERR(wbuf))
+		return PTR_ERR(wbuf);
+	spin_lock_irqsave(&lock, flags);
+
+	for (i = 0; i < count; i++) {
+		if (i%2)
+			send_space(wbuf[i] - delta);
+		else
+			delta = send_pulse(wbuf[i]);
+	}
+	gpiochip->set(gpiochip, gpio_out_pin, invert);
+
+	spin_unlock_irqrestore(&lock, flags);
+	kfree(wbuf);
+	return n;
+}
+
+static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
+{
+	int result;
+	__u32 value;
+
+	switch (cmd) {
+	case LIRC_GET_SEND_MODE:
+		return -ENOIOCTLCMD;
+		break;
+
+	case LIRC_SET_SEND_MODE:
+		result = get_user(value, (__u32 *) arg);
+		if (result)
+			return result;
+		/* only LIRC_MODE_PULSE supported */
+		if (value != LIRC_MODE_PULSE)
+			return -ENOSYS;
+		break;
+
+	case LIRC_GET_LENGTH:
+		return -ENOSYS;
+		break;
+
+	case LIRC_SET_SEND_DUTY_CYCLE:
+		dprintk("SET_SEND_DUTY_CYCLE\n");
+		result = get_user(value, (__u32 *) arg);
+		if (result)
+			return result;
+		if (value <= 0 || value > 100)
+			return -EINVAL;
+		return init_timing_params(value, freq);
+		break;
+
+	case LIRC_SET_SEND_CARRIER:
+		dprintk("SET_SEND_CARRIER\n");
+		result = get_user(value, (__u32 *) arg);
+		if (result)
+			return result;
+		if (value > 500000 || value < 20000)
+			return -EINVAL;
+		return init_timing_params(duty_cycle, value);
+		break;
+
+	default:
+		return lirc_dev_fop_ioctl(filep, cmd, arg);
+	}
+	return 0;
+}
+
+static const struct file_operations lirc_fops = {
+	.owner		= THIS_MODULE,
+	.write		= lirc_write,
+	.unlocked_ioctl	= lirc_ioctl,
+	.read		= lirc_dev_fop_read,
+	.poll		= lirc_dev_fop_poll,
+	.open		= lirc_dev_fop_open,
+	.release	= lirc_dev_fop_close,
+	.llseek		= no_llseek,
+};
+
+static struct lirc_driver driver = {
+	.name		= LIRC_DRIVER_NAME,
+	.minor		= -1,
+	.code_length	= 1,
+	.sample_rate	= 0,
+	.data		= NULL,
+	.add_to_buf	= NULL,
+	.rbuf		= &rbuf,
+	.set_use_inc	= set_use_inc,
+	.set_use_dec	= set_use_dec,
+	.fops		= &lirc_fops,
+	.dev		= NULL,
+	.owner		= THIS_MODULE,
+};
+
+static const struct of_device_id lirc_rpi_of_match[] = {
+	{ .compatible = "rpi,lirc-rpi", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, lirc_rpi_of_match);
+
+static struct platform_driver lirc_rpi_driver = {
+	.driver = {
+		.name   = LIRC_DRIVER_NAME,
+		.owner  = THIS_MODULE,
+		.of_match_table = of_match_ptr(lirc_rpi_of_match),
+	},
+};
+
+static int __init lirc_rpi_init(void)
+{
+	struct device_node *node;
+	int result;
+
+	/* Init read buffer. */
+	result = lirc_buffer_init(&rbuf, sizeof(int), RBUF_LEN);
+	if (result < 0)
+		return -ENOMEM;
+
+	result = platform_driver_register(&lirc_rpi_driver);
+	if (result) {
+		printk(KERN_ERR LIRC_DRIVER_NAME
+		       ": lirc register returned %d\n", result);
+		goto exit_buffer_free;
+	}
+
+	node = of_find_compatible_node(NULL, NULL,
+				       lirc_rpi_of_match[0].compatible);
+
+	if (node) {
+		/* DT-enabled */
+		lirc_rpi_dev = of_find_device_by_node(node);
+		WARN_ON(lirc_rpi_dev->dev.of_node != node);
+		of_node_put(node);
+	}
+	else {
+		lirc_rpi_dev = platform_device_alloc(LIRC_DRIVER_NAME, 0);
+		if (!lirc_rpi_dev) {
+			result = -ENOMEM;
+			goto exit_driver_unregister;
+		}
+
+		result = platform_device_add(lirc_rpi_dev);
+		if (result)
+			goto exit_device_put;
+	}
+
+	return 0;
+
+	exit_device_put:
+	platform_device_put(lirc_rpi_dev);
+
+	exit_driver_unregister:
+	platform_driver_unregister(&lirc_rpi_driver);
+
+	exit_buffer_free:
+	lirc_buffer_free(&rbuf);
+
+	return result;
+}
+
+static void lirc_rpi_exit(void)
+{
+	if (!lirc_rpi_dev->dev.of_node)
+		platform_device_unregister(lirc_rpi_dev);
+	platform_driver_unregister(&lirc_rpi_driver);
+	lirc_buffer_free(&rbuf);
+}
+
+static int __init lirc_rpi_init_module(void)
+{
+	int result;
+
+	result = lirc_rpi_init();
+	if (result)
+		return result;
+
+	result = init_port();
+	if (result < 0)
+		goto exit_rpi;
+
+	driver.features = LIRC_CAN_SET_SEND_DUTY_CYCLE |
+			  LIRC_CAN_SET_SEND_CARRIER |
+			  LIRC_CAN_SEND_PULSE |
+			  LIRC_CAN_REC_MODE2;
+
+	driver.dev = &lirc_rpi_dev->dev;
+	driver.minor = lirc_register_driver(&driver);
+
+	if (driver.minor < 0) {
+		printk(KERN_ERR LIRC_DRIVER_NAME
+		       ": device registration failed with %d\n", result);
+		result = -EIO;
+		goto exit_rpi;
+	}
+
+	printk(KERN_INFO LIRC_DRIVER_NAME ": driver registered!\n");
+
+	return 0;
+
+	exit_rpi:
+	lirc_rpi_exit();
+
+	return result;
+}
+
+static void __exit lirc_rpi_exit_module(void)
+{
+	lirc_unregister_driver(driver.minor);
+
+	gpio_free(gpio_out_pin);
+	gpio_free(gpio_in_pin);
+
+	lirc_rpi_exit();
+
+	printk(KERN_INFO LIRC_DRIVER_NAME ": cleaned up module\n");
+}
+
+module_init(lirc_rpi_init_module);
+module_exit(lirc_rpi_exit_module);
+
+MODULE_DESCRIPTION("Infra-red receiver and blaster driver for Raspberry Pi GPIO.");
+MODULE_AUTHOR("Aron Robert Szabo <aron@reon.hu>");
+MODULE_AUTHOR("Michael Bishop <cleverca22@gmail.com>");
+MODULE_LICENSE("GPL");
+
+module_param(gpio_out_pin, int, S_IRUGO);
+MODULE_PARM_DESC(gpio_out_pin, "GPIO output/transmitter pin number of the BCM"
+		 " processor. (default 17");
+
+module_param(gpio_in_pin, int, S_IRUGO);
+MODULE_PARM_DESC(gpio_in_pin, "GPIO input pin number of the BCM processor."
+		 " (default 18");
+
+module_param(gpio_in_pull, int, S_IRUGO);
+MODULE_PARM_DESC(gpio_in_pull, "GPIO input pin pull configuration."
+		 " (0 = off, 1 = up, 2 = down, default down)");
+
+module_param(sense, int, S_IRUGO);
+MODULE_PARM_DESC(sense, "Override autodetection of IR receiver circuit"
+		 " (0 = active high, 1 = active low )");
+
+module_param(softcarrier, bool, S_IRUGO);
+MODULE_PARM_DESC(softcarrier, "Software carrier (0 = off, 1 = on, default on)");
+
+module_param(invert, bool, S_IRUGO);
+MODULE_PARM_DESC(invert, "Invert output (0 = off, 1 = on, default off");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Enable debugging messages");
diff -Nur linux-3.18.10/drivers/staging/media/lirc/Makefile linux-rpi/drivers/staging/media/lirc/Makefile
--- linux-3.18.10/drivers/staging/media/lirc/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/staging/media/lirc/Makefile	2015-03-26 11:46:54.056237968 +0100
@@ -7,6 +7,7 @@
 obj-$(CONFIG_LIRC_IGORPLUGUSB)	+= lirc_igorplugusb.o
 obj-$(CONFIG_LIRC_IMON)		+= lirc_imon.o
 obj-$(CONFIG_LIRC_PARALLEL)	+= lirc_parallel.o
+obj-$(CONFIG_LIRC_RPI)		+= lirc_rpi.o
 obj-$(CONFIG_LIRC_SASEM)	+= lirc_sasem.o
 obj-$(CONFIG_LIRC_SERIAL)	+= lirc_serial.o
 obj-$(CONFIG_LIRC_SIR)		+= lirc_sir.o
diff -Nur linux-3.18.10/drivers/thermal/bcm2835-thermal.c linux-rpi/drivers/thermal/bcm2835-thermal.c
--- linux-3.18.10/drivers/thermal/bcm2835-thermal.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/thermal/bcm2835-thermal.c	2015-03-26 11:46:54.192238094 +0100
@@ -0,0 +1,184 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <mach/vcio.h>
+#include <linux/thermal.h>
+
+
+/* --- DEFINITIONS --- */
+#define MODULE_NAME "bcm2835_thermal"
+
+/*#define THERMAL_DEBUG_ENABLE*/
+
+#ifdef THERMAL_DEBUG_ENABLE
+#define print_debug(fmt,...) printk(KERN_INFO "%s:%s:%d: "fmt"\n", MODULE_NAME, __func__, __LINE__, ##__VA_ARGS__)
+#else
+#define print_debug(fmt,...)
+#endif
+#define print_err(fmt,...) printk(KERN_ERR "%s:%s:%d: "fmt"\n", MODULE_NAME, __func__,__LINE__, ##__VA_ARGS__)
+
+#define VC_TAG_GET_TEMP 0x00030006
+#define VC_TAG_GET_MAX_TEMP 0x0003000A
+
+typedef enum {
+	TEMP,
+	MAX_TEMP,
+} temp_type;
+
+/* --- STRUCTS --- */
+/* tag part of the message */
+struct vc_msg_tag {
+	uint32_t tag_id;		/* the tag ID for the temperature */
+	uint32_t buffer_size;	/* size of the buffer (should be 8) */
+	uint32_t request_code;	/* identifies message as a request (should be 0) */
+	uint32_t id;			/* extra ID field (should be 0) */
+	uint32_t val;			/* returned value of the temperature */
+};
+
+/* message structure to be sent to videocore */
+struct vc_msg {
+	uint32_t msg_size;		/* simply, sizeof(struct vc_msg) */
+	uint32_t request_code;		/* holds various information like the success and number of bytes returned (refer to mailboxes wiki) */
+	struct vc_msg_tag tag;		/* the tag structure above to make */
+	uint32_t end_tag;		/* an end identifier, should be set to NULL */
+};
+
+struct bcm2835_thermal_data {
+	struct thermal_zone_device *thermal_dev;
+	struct vc_msg msg;
+};
+
+/* --- GLOBALS --- */
+static struct bcm2835_thermal_data bcm2835_data;
+
+/* Thermal Device Operations */
+static struct thermal_zone_device_ops ops;
+
+/* --- FUNCTIONS --- */
+
+static int bcm2835_get_temp_or_max(struct thermal_zone_device *thermal_dev, unsigned long *temp, unsigned tag_id)
+{
+	int result = -1, retry = 3;
+	print_debug("IN");
+
+	*temp = 0;
+	while (result != 0 && retry-- > 0) {
+		/* wipe all previous message data */
+		memset(&bcm2835_data.msg, 0, sizeof bcm2835_data.msg);
+
+		/* prepare message */
+		bcm2835_data.msg.msg_size = sizeof bcm2835_data.msg;
+		bcm2835_data.msg.tag.buffer_size = 8;
+		bcm2835_data.msg.tag.tag_id = tag_id;
+
+		/* send the message */
+		result = bcm_mailbox_property(&bcm2835_data.msg, sizeof bcm2835_data.msg);
+		print_debug("Got %stemperature as %u (%d,%x)\n", tag_id==VC_TAG_GET_MAX_TEMP ? "max ":"", (uint)bcm2835_data.msg.tag.val, result, bcm2835_data.msg.request_code);
+		if (!(bcm2835_data.msg.request_code & 0x80000000))
+			result = -1;
+	}
+
+	/* check if it was all ok and return the rate in milli degrees C */
+	if (result == 0)
+		*temp = (uint)bcm2835_data.msg.tag.val;
+	else
+		print_err("Failed to get temperature! (%x:%d)\n", tag_id, result);
+	print_debug("OUT");
+	return result;
+}
+
+static int bcm2835_get_temp(struct thermal_zone_device *thermal_dev, unsigned long *temp)
+{
+	return bcm2835_get_temp_or_max(thermal_dev, temp, VC_TAG_GET_TEMP);
+}
+
+static int bcm2835_get_max_temp(struct thermal_zone_device *thermal_dev, int trip_num, unsigned long *temp)
+{
+	return bcm2835_get_temp_or_max(thermal_dev, temp, VC_TAG_GET_MAX_TEMP);
+}
+
+static int bcm2835_get_trip_type(struct thermal_zone_device * thermal_dev, int trip_num, enum thermal_trip_type *trip_type)
+{
+	*trip_type = THERMAL_TRIP_HOT;
+	return 0;
+}
+
+
+static int bcm2835_get_mode(struct thermal_zone_device *thermal_dev, enum thermal_device_mode *dev_mode)
+{
+	*dev_mode = THERMAL_DEVICE_ENABLED;
+	return 0;
+}
+
+
+static int bcm2835_thermal_probe(struct platform_device *pdev)
+{
+	print_debug("IN");
+	print_debug("THERMAL Driver has been probed!");
+
+	/* check that the device isn't null!*/
+	if(pdev == NULL)
+	{
+		print_debug("Platform device is empty!");
+		return -ENODEV;
+	}
+
+	if(!(bcm2835_data.thermal_dev = thermal_zone_device_register("bcm2835_thermal",  1, 0, NULL, &ops, NULL, 0, 0)))
+	{
+		print_debug("Unable to register the thermal device!");
+		return -EFAULT;
+	}
+	return 0;
+}
+
+
+static int bcm2835_thermal_remove(struct platform_device *pdev)
+{
+	print_debug("IN");
+
+	thermal_zone_device_unregister(bcm2835_data.thermal_dev);
+
+	print_debug("OUT");
+
+	return 0;
+}
+
+static struct thermal_zone_device_ops ops  = {
+	.get_temp = bcm2835_get_temp,
+	.get_trip_temp = bcm2835_get_max_temp,
+	.get_trip_type = bcm2835_get_trip_type,
+	.get_mode = bcm2835_get_mode,
+};
+
+/* Thermal Driver */
+static struct platform_driver bcm2835_thermal_driver = {
+	.probe = bcm2835_thermal_probe,
+	.remove = bcm2835_thermal_remove,
+	.driver = {
+				.name = "bcm2835_thermal",
+				.owner = THIS_MODULE,
+			},
+};
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dorian Peake");
+MODULE_DESCRIPTION("Thermal driver for bcm2835 chip");
+
+module_platform_driver(bcm2835_thermal_driver);
diff -Nur linux-3.18.10/drivers/thermal/Kconfig linux-rpi/drivers/thermal/Kconfig
--- linux-3.18.10/drivers/thermal/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/thermal/Kconfig	2015-03-26 11:46:54.192238094 +0100
@@ -206,6 +206,12 @@
 	  enforce idle time which results in more package C-state residency. The
 	  user interface is exposed via generic thermal framework.
 
+config THERMAL_BCM2835
+	tristate "BCM2835 Thermal Driver"
+	help
+	  This will enable temperature monitoring for the Broadcom BCM2835
+	  chip. If built as a module, it will be called 'bcm2835-thermal'.
+
 config X86_PKG_TEMP_THERMAL
 	tristate "X86 package temperature thermal driver"
 	depends on X86_THERMAL_VECTOR
diff -Nur linux-3.18.10/drivers/thermal/Makefile linux-rpi/drivers/thermal/Makefile
--- linux-3.18.10/drivers/thermal/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/thermal/Makefile	2015-03-26 11:46:54.192238094 +0100
@@ -29,6 +29,7 @@
 obj-$(CONFIG_IMX_THERMAL)	+= imx_thermal.o
 obj-$(CONFIG_DB8500_CPUFREQ_COOLING)	+= db8500_cpufreq_cooling.o
 obj-$(CONFIG_INTEL_POWERCLAMP)	+= intel_powerclamp.o
+obj-$(CONFIG_THERMAL_BCM2835)	+= bcm2835-thermal.o
 obj-$(CONFIG_X86_PKG_TEMP_THERMAL)	+= x86_pkg_temp_thermal.o
 obj-$(CONFIG_INTEL_SOC_DTS_THERMAL)	+= intel_soc_dts_thermal.o
 obj-$(CONFIG_TI_SOC_THERMAL)	+= ti-soc-thermal/
diff -Nur linux-3.18.10/drivers/tty/serial/amba-pl011.c linux-rpi/drivers/tty/serial/amba-pl011.c
--- linux-3.18.10/drivers/tty/serial/amba-pl011.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/tty/serial/amba-pl011.c	2015-03-26 11:46:54.212238112 +0100
@@ -58,6 +58,7 @@
 #include <linux/pinctrl/consumer.h>
 #include <linux/sizes.h>
 #include <linux/io.h>
+#include <linux/workqueue.h>
 
 #define UART_NR			14
 
@@ -84,7 +85,7 @@
 
 static unsigned int get_fifosize_arm(struct amba_device *dev)
 {
-	return amba_rev(dev) < 3 ? 16 : 32;
+	return 16; //TODO: fix: amba_rev(dev) < 3 ? 16 : 32;
 }
 
 static struct vendor_data vendor_arm = {
@@ -156,7 +157,9 @@
 	unsigned int		lcrh_tx;	/* vendor-specific */
 	unsigned int		lcrh_rx;	/* vendor-specific */
 	unsigned int		old_cr;		/* state during shutdown */
+	struct delayed_work	tx_softirq_work;
 	bool			autorts;
+	unsigned int		tx_irq_seen;	/* 0=none, 1=1, 2=2 or more */
 	char			type[12];
 #ifdef CONFIG_DMA_ENGINE
 	/* DMA stuff */
@@ -408,8 +411,9 @@
 		dma_release_channel(uap->dmarx.chan);
 }
 
-/* Forward declare this for the refill routine */
+/* Forward declare these for the refill routine */
 static int pl011_dma_tx_refill(struct uart_amba_port *uap);
+static void pl011_start_tx_pio(struct uart_amba_port *uap);
 
 /*
  * The current DMA TX buffer has been sent.
@@ -447,14 +451,13 @@
 		return;
 	}
 
-	if (pl011_dma_tx_refill(uap) <= 0) {
+	if (pl011_dma_tx_refill(uap) <= 0)
 		/*
 		 * We didn't queue a DMA buffer for some reason, but we
 		 * have data pending to be sent.  Re-enable the TX IRQ.
 		 */
-		uap->im |= UART011_TXIM;
-		writew(uap->im, uap->port.membase + UART011_IMSC);
-	}
+		pl011_start_tx_pio(uap);
+
 	spin_unlock_irqrestore(&uap->port.lock, flags);
 }
 
@@ -628,12 +631,10 @@
 		if (!uap->dmatx.queued) {
 			if (pl011_dma_tx_refill(uap) > 0) {
 				uap->im &= ~UART011_TXIM;
-				ret = true;
-			} else {
-				uap->im |= UART011_TXIM;
+				writew(uap->im, uap->port.membase +
+				       UART011_IMSC);
+			} else
 				ret = false;
-			}
-			writew(uap->im, uap->port.membase + UART011_IMSC);
 		} else if (!(uap->dmacr & UART011_TXDMAE)) {
 			uap->dmacr |= UART011_TXDMAE;
 			writew(uap->dmacr,
@@ -1172,15 +1173,24 @@
 	pl011_dma_tx_stop(uap);
 }
 
+static bool pl011_tx_chars(struct uart_amba_port *uap);
+
+/* Start TX with programmed I/O only (no DMA) */
+static void pl011_start_tx_pio(struct uart_amba_port *uap)
+{
+	uap->im |= UART011_TXIM;
+	writew(uap->im, uap->port.membase + UART011_IMSC);
+	if (!uap->tx_irq_seen)
+		pl011_tx_chars(uap);
+}
+
 static void pl011_start_tx(struct uart_port *port)
 {
 	struct uart_amba_port *uap =
 	    container_of(port, struct uart_amba_port, port);
 
-	if (!pl011_dma_tx_start(uap)) {
-		uap->im |= UART011_TXIM;
-		writew(uap->im, uap->port.membase + UART011_IMSC);
-	}
+	if (!pl011_dma_tx_start(uap))
+		pl011_start_tx_pio(uap);
 }
 
 static void pl011_stop_rx(struct uart_port *port)
@@ -1238,40 +1248,87 @@
 	spin_lock(&uap->port.lock);
 }
 
-static void pl011_tx_chars(struct uart_amba_port *uap)
+/*
+ * Transmit a character
+ * There must be at least one free entry in the TX FIFO to accept the char.
+ *
+ * Returns true if the FIFO might have space in it afterwards;
+ * returns false if the FIFO definitely became full.
+ */
+static bool pl011_tx_char(struct uart_amba_port *uap, unsigned char c)
+{
+	writew(c, uap->port.membase + UART01x_DR);
+	uap->port.icount.tx++;
+
+	if (likely(uap->tx_irq_seen > 1))
+		return true;
+
+	return !(readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF);
+}
+
+static bool pl011_tx_chars(struct uart_amba_port *uap)
 {
 	struct circ_buf *xmit = &uap->port.state->xmit;
 	int count;
 
+	if (unlikely(uap->tx_irq_seen < 2))
+		/*
+		 * Initial FIFO fill level unknown: we must check TXFF
+		 * after each write, so just try to fill up the FIFO.
+		 */
+		count = uap->fifosize;
+	else /* tx_irq_seen >= 2 */
+		/*
+		 * FIFO initially at least half-empty, so we can simply
+		 * write half the FIFO without polling TXFF.
+
+		 * Note: the *first* TX IRQ can still race with
+		 * pl011_start_tx_pio(), which can result in the FIFO
+		 * being fuller than expected in that case.
+		 */
+		count = uap->fifosize >> 1;
+
+	/*
+	 * If the FIFO is full we're guaranteed a TX IRQ at some later point,
+	 * and can't transmit immediately in any case:
+	 */
+	if (unlikely(uap->tx_irq_seen < 2 &&
+		     readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF))
+		return false;
+
 	if (uap->port.x_char) {
-		writew(uap->port.x_char, uap->port.membase + UART01x_DR);
-		uap->port.icount.tx++;
+		pl011_tx_char(uap, uap->port.x_char);
 		uap->port.x_char = 0;
-		return;
+		--count;
 	}
 	if (uart_circ_empty(xmit) || uart_tx_stopped(&uap->port)) {
 		pl011_stop_tx(&uap->port);
-		return;
+		goto done;
 	}
 
 	/* If we are using DMA mode, try to send some characters. */
 	if (pl011_dma_tx_irq(uap))
-		return;
+		goto done;
 
-	count = uap->fifosize >> 1;
-	do {
-		writew(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
+	while (count-- > 0 && pl011_tx_char(uap, xmit->buf[xmit->tail])) {
 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		uap->port.icount.tx++;
 		if (uart_circ_empty(xmit))
 			break;
-	} while (--count > 0);
+	}
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 		uart_write_wakeup(&uap->port);
 
-	if (uart_circ_empty(xmit))
+	if (uart_circ_empty(xmit)) {
 		pl011_stop_tx(&uap->port);
+		goto done;
+	}
+
+	if (unlikely(!uap->tx_irq_seen))
+		schedule_delayed_work(&uap->tx_softirq_work, uap->port.timeout);
+
+done:
+	return false;
 }
 
 static void pl011_modem_status(struct uart_amba_port *uap)
@@ -1298,6 +1355,28 @@
 	wake_up_interruptible(&uap->port.state->port.delta_msr_wait);
 }
 
+static void pl011_tx_softirq(struct work_struct *work)
+{
+	struct delayed_work *dwork = to_delayed_work(work);
+	struct uart_amba_port *uap =
+		container_of(dwork, struct uart_amba_port, tx_softirq_work);
+
+	spin_lock(&uap->port.lock);
+	while (pl011_tx_chars(uap)) ;
+	spin_unlock(&uap->port.lock);
+}
+
+static void pl011_tx_irq_seen(struct uart_amba_port *uap)
+{
+	if (likely(uap->tx_irq_seen > 1))
+		return;
+
+	uap->tx_irq_seen++;
+	if (uap->tx_irq_seen < 2)
+		/* first TX IRQ */
+		cancel_delayed_work(&uap->tx_softirq_work);
+}
+
 static irqreturn_t pl011_int(int irq, void *dev_id)
 {
 	struct uart_amba_port *uap = dev_id;
@@ -1336,8 +1415,10 @@
 			if (status & (UART011_DSRMIS|UART011_DCDMIS|
 				      UART011_CTSMIS|UART011_RIMIS))
 				pl011_modem_status(uap);
-			if (status & UART011_TXIS)
+			if (status & UART011_TXIS) {
+				pl011_tx_irq_seen(uap);
 				pl011_tx_chars(uap);
+			}
 
 			if (pass_counter-- == 0)
 				break;
@@ -1541,7 +1622,7 @@
 {
 	struct uart_amba_port *uap =
 	    container_of(port, struct uart_amba_port, port);
-	unsigned int cr, lcr_h, fbrd, ibrd;
+	unsigned int cr;
 	int retval;
 
 	retval = pl011_hwinit(port);
@@ -1559,30 +1640,8 @@
 
 	writew(uap->vendor->ifls, uap->port.membase + UART011_IFLS);
 
-	/*
-	 * Provoke TX FIFO interrupt into asserting. Taking care to preserve
-	 * baud rate and data format specified by FBRD, IBRD and LCRH as the
-	 * UART may already be in use as a console.
-	 */
 	spin_lock_irq(&uap->port.lock);
 
-	fbrd = readw(uap->port.membase + UART011_FBRD);
-	ibrd = readw(uap->port.membase + UART011_IBRD);
-	lcr_h = readw(uap->port.membase + uap->lcrh_rx);
-
-	cr = UART01x_CR_UARTEN | UART011_CR_TXE | UART011_CR_LBE;
-	writew(cr, uap->port.membase + UART011_CR);
-	writew(0, uap->port.membase + UART011_FBRD);
-	writew(1, uap->port.membase + UART011_IBRD);
-	pl011_write_lcr_h(uap, 0);
-	writew(0, uap->port.membase + UART01x_DR);
-	while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY)
-		barrier();
-
-	writew(fbrd, uap->port.membase + UART011_FBRD);
-	writew(ibrd, uap->port.membase + UART011_IBRD);
-	pl011_write_lcr_h(uap, lcr_h);
-
 	/* restore RTS and DTR */
 	cr = uap->old_cr & (UART011_CR_RTS | UART011_CR_DTR);
 	cr |= UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE;
@@ -1636,13 +1695,15 @@
 	    container_of(port, struct uart_amba_port, port);
 	unsigned int cr;
 
+	cancel_delayed_work_sync(&uap->tx_softirq_work);
+
 	/*
 	 * disable all interrupts
 	 */
 	spin_lock_irq(&uap->port.lock);
 	uap->im = 0;
 	writew(uap->im, uap->port.membase + UART011_IMSC);
-	writew(0xffff, uap->port.membase + UART011_ICR);
+	writew(0xffff & ~UART011_TXIS, uap->port.membase + UART011_ICR);
 	spin_unlock_irq(&uap->port.lock);
 
 	pl011_dma_shutdown(uap);
@@ -2180,6 +2241,7 @@
 	uap->port.ops = &amba_pl011_pops;
 	uap->port.flags = UPF_BOOT_AUTOCONF;
 	uap->port.line = i;
+	INIT_DELAYED_WORK(&uap->tx_softirq_work, pl011_tx_softirq);
 	pl011_dma_probe(&dev->dev, uap);
 
 	/* Ensure interrupts from this UART are masked and cleared */
diff -Nur linux-3.18.10/drivers/usb/core/generic.c linux-rpi/drivers/usb/core/generic.c
--- linux-3.18.10/drivers/usb/core/generic.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/usb/core/generic.c	2015-03-26 11:46:54.260238154 +0100
@@ -152,6 +152,7 @@
 		dev_warn(&udev->dev,
 			"no configuration chosen from %d choice%s\n",
 			num_configs, plural(num_configs));
+		dev_warn(&udev->dev, "No support over %dmA\n", udev->bus_mA);
 	}
 	return i;
 }
diff -Nur linux-3.18.10/drivers/usb/core/hub.c linux-rpi/drivers/usb/core/hub.c
--- linux-3.18.10/drivers/usb/core/hub.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/usb/core/hub.c	2015-03-26 11:46:54.260238154 +0100
@@ -4923,7 +4923,7 @@
 	if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
 		u16 status = 0, unused;
 
-		dev_dbg(&port_dev->dev, "over-current change\n");
+		dev_notice(&port_dev->dev, "over-current change\n");
 		usb_clear_port_feature(hdev, port1,
 				USB_PORT_FEAT_C_OVER_CURRENT);
 		msleep(100);	/* Cool down */
diff -Nur linux-3.18.10/drivers/usb/core/message.c linux-rpi/drivers/usb/core/message.c
--- linux-3.18.10/drivers/usb/core/message.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/usb/core/message.c	2015-03-26 11:46:54.260238154 +0100
@@ -1872,6 +1872,85 @@
 	if (cp->string == NULL &&
 			!(dev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS))
 		cp->string = usb_cache_string(dev, cp->desc.iConfiguration);
+/* Uncomment this define to enable the HS Electrical Test support */
+#define DWC_HS_ELECT_TST 1
+#ifdef DWC_HS_ELECT_TST
+		/* Here we implement the HS Electrical Test support. The
+		 * tester uses a vendor ID of 0x1A0A to indicate we should
+		 * run a special test sequence. The product ID tells us
+		 * which sequence to run. We invoke the test sequence by
+		 * sending a non-standard SetFeature command to our root
+		 * hub port. Our dwc_otg_hcd_hub_control() routine will
+		 * recognize the command and perform the desired test
+		 * sequence.
+		 */
+		if (dev->descriptor.idVendor == 0x1A0A) {
+			/* HSOTG Electrical Test */
+			dev_warn(&dev->dev, "VID from HSOTG Electrical Test Fixture\n");
+
+			if (dev->bus && dev->bus->root_hub) {
+				struct usb_device *hdev = dev->bus->root_hub;
+				dev_warn(&dev->dev, "Got PID 0x%x\n", dev->descriptor.idProduct);
+
+				switch (dev->descriptor.idProduct) {
+				case 0x0101:	/* TEST_SE0_NAK */
+					dev_warn(&dev->dev, "TEST_SE0_NAK\n");
+					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+							USB_REQ_SET_FEATURE, USB_RT_PORT,
+							USB_PORT_FEAT_TEST, 0x300, NULL, 0, HZ);
+					break;
+
+				case 0x0102:	/* TEST_J */
+					dev_warn(&dev->dev, "TEST_J\n");
+					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+							USB_REQ_SET_FEATURE, USB_RT_PORT,
+							USB_PORT_FEAT_TEST, 0x100, NULL, 0, HZ);
+					break;
+
+				case 0x0103:	/* TEST_K */
+					dev_warn(&dev->dev, "TEST_K\n");
+					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+							USB_REQ_SET_FEATURE, USB_RT_PORT,
+							USB_PORT_FEAT_TEST, 0x200, NULL, 0, HZ);
+					break;
+
+				case 0x0104:	/* TEST_PACKET */
+					dev_warn(&dev->dev, "TEST_PACKET\n");
+					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+							USB_REQ_SET_FEATURE, USB_RT_PORT,
+							USB_PORT_FEAT_TEST, 0x400, NULL, 0, HZ);
+					break;
+
+				case 0x0105:	/* TEST_FORCE_ENABLE */
+					dev_warn(&dev->dev, "TEST_FORCE_ENABLE\n");
+					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+							USB_REQ_SET_FEATURE, USB_RT_PORT,
+							USB_PORT_FEAT_TEST, 0x500, NULL, 0, HZ);
+					break;
+
+				case 0x0106:	/* HS_HOST_PORT_SUSPEND_RESUME */
+					dev_warn(&dev->dev, "HS_HOST_PORT_SUSPEND_RESUME\n");
+					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+							USB_REQ_SET_FEATURE, USB_RT_PORT,
+							USB_PORT_FEAT_TEST, 0x600, NULL, 0, 40 * HZ);
+					break;
+
+				case 0x0107:	/* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */
+					dev_warn(&dev->dev, "SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup\n");
+					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+							USB_REQ_SET_FEATURE, USB_RT_PORT,
+							USB_PORT_FEAT_TEST, 0x700, NULL, 0, 40 * HZ);
+					break;
+
+				case 0x0108:	/* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */
+					dev_warn(&dev->dev, "SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute\n");
+					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
+							USB_REQ_SET_FEATURE, USB_RT_PORT,
+							USB_PORT_FEAT_TEST, 0x800, NULL, 0, 40 * HZ);
+				}
+			}
+		}
+#endif /* DWC_HS_ELECT_TST */
 
 	/* Now that the interfaces are installed, re-enable LPM. */
 	usb_unlocked_enable_lpm(dev);
diff -Nur linux-3.18.10/drivers/usb/core/otg_whitelist.h linux-rpi/drivers/usb/core/otg_whitelist.h
--- linux-3.18.10/drivers/usb/core/otg_whitelist.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/usb/core/otg_whitelist.h	2015-03-26 11:46:54.260238154 +0100
@@ -19,33 +19,82 @@
 static struct usb_device_id whitelist_table [] = {
 
 /* hubs are optional in OTG, but very handy ... */
+#define CERT_WITHOUT_HUBS
+#if defined(CERT_WITHOUT_HUBS)
+{ USB_DEVICE( 0x0000, 0x0000 ), }, /* Root HUB Only*/
+#else
 { USB_DEVICE_INFO(USB_CLASS_HUB, 0, 0), },
 { USB_DEVICE_INFO(USB_CLASS_HUB, 0, 1), },
+{ USB_DEVICE_INFO(USB_CLASS_HUB, 0, 2), },
+#endif
 
 #ifdef	CONFIG_USB_PRINTER		/* ignoring nonstatic linkage! */
 /* FIXME actually, printers are NOT supposed to use device classes;
  * they're supposed to use interface classes...
  */
-{ USB_DEVICE_INFO(7, 1, 1) },
-{ USB_DEVICE_INFO(7, 1, 2) },
-{ USB_DEVICE_INFO(7, 1, 3) },
+//{ USB_DEVICE_INFO(7, 1, 1) },
+//{ USB_DEVICE_INFO(7, 1, 2) },
+//{ USB_DEVICE_INFO(7, 1, 3) },
 #endif
 
 #ifdef	CONFIG_USB_NET_CDCETHER
 /* Linux-USB CDC Ethernet gadget */
-{ USB_DEVICE(0x0525, 0xa4a1), },
+//{ USB_DEVICE(0x0525, 0xa4a1), },
 /* Linux-USB CDC Ethernet + RNDIS gadget */
-{ USB_DEVICE(0x0525, 0xa4a2), },
+//{ USB_DEVICE(0x0525, 0xa4a2), },
 #endif
 
 #if	defined(CONFIG_USB_TEST) || defined(CONFIG_USB_TEST_MODULE)
 /* gadget zero, for testing */
-{ USB_DEVICE(0x0525, 0xa4a0), },
+//{ USB_DEVICE(0x0525, 0xa4a0), },
 #endif
 
+/* OPT Tester */
+{ USB_DEVICE( 0x1a0a, 0x0101 ), }, /* TEST_SE0_NAK */
+{ USB_DEVICE( 0x1a0a, 0x0102 ), }, /* Test_J */
+{ USB_DEVICE( 0x1a0a, 0x0103 ), }, /* Test_K */
+{ USB_DEVICE( 0x1a0a, 0x0104 ), }, /* Test_PACKET */
+{ USB_DEVICE( 0x1a0a, 0x0105 ), }, /* Test_FORCE_ENABLE */
+{ USB_DEVICE( 0x1a0a, 0x0106 ), }, /* HS_PORT_SUSPEND_RESUME  */
+{ USB_DEVICE( 0x1a0a, 0x0107 ), }, /* SINGLE_STEP_GET_DESCRIPTOR setup */
+{ USB_DEVICE( 0x1a0a, 0x0108 ), }, /* SINGLE_STEP_GET_DESCRIPTOR execute */
+
+/* Sony cameras */
+{ USB_DEVICE_VER(0x054c,0x0010,0x0410, 0x0500), },
+
+/* Memory Devices */
+//{ USB_DEVICE( 0x0781, 0x5150 ), }, /* SanDisk */
+//{ USB_DEVICE( 0x05DC, 0x0080 ), }, /* Lexar */
+//{ USB_DEVICE( 0x4146, 0x9281 ), }, /* IOMEGA */
+//{ USB_DEVICE( 0x067b, 0x2507 ), }, /* Hammer 20GB External HD  */
+{ USB_DEVICE( 0x0EA0, 0x2168 ), }, /* Ours Technology Inc. (BUFFALO ClipDrive)*/
+//{ USB_DEVICE( 0x0457, 0x0150 ), }, /* Silicon Integrated Systems Corp. */
+
+/* HP Printers */
+//{ USB_DEVICE( 0x03F0, 0x1102 ), }, /* HP Photosmart 245 */
+//{ USB_DEVICE( 0x03F0, 0x1302 ), }, /* HP Photosmart 370 Series */
+
+/* Speakers */
+//{ USB_DEVICE( 0x0499, 0x3002 ), }, /* YAMAHA YST-MS35D USB Speakers */
+//{ USB_DEVICE( 0x0672, 0x1041 ), }, /* Labtec USB Headset */
+
 { }	/* Terminating entry */
 };
 
+static inline void report_errors(struct usb_device *dev)
+{
+	/* OTG MESSAGE: report errors here, customize to match your product */
+	dev_info(&dev->dev, "device Vendor:%04x Product:%04x is not supported\n",
+		 le16_to_cpu(dev->descriptor.idVendor),
+		 le16_to_cpu(dev->descriptor.idProduct));
+        if (USB_CLASS_HUB == dev->descriptor.bDeviceClass){
+                dev_printk(KERN_CRIT, &dev->dev, "Unsupported Hub Topology\n");
+        } else {
+                dev_printk(KERN_CRIT, &dev->dev, "Attached Device is not Supported\n");
+        }
+}
+
+
 static int is_targeted(struct usb_device *dev)
 {
 	struct usb_device_id	*id = whitelist_table;
@@ -95,16 +144,57 @@
 			continue;
 
 		return 1;
-	}
+		/* NOTE: can't use usb_match_id() since interface caches
+		 * aren't set up yet. this is cut/paste from that code.
+		 */
+		for (id = whitelist_table; id->match_flags; id++) {
+#ifdef DEBUG
+			dev_dbg(&dev->dev,
+				"ID: V:%04x P:%04x DC:%04x SC:%04x PR:%04x \n",
+				id->idVendor,
+				id->idProduct,
+				id->bDeviceClass,
+				id->bDeviceSubClass,
+				id->bDeviceProtocol);
+#endif
 
-	/* add other match criteria here ... */
+			if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
+			    id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
+				continue;
+
+			if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
+			    id->idProduct != le16_to_cpu(dev->descriptor.idProduct))
+				continue;
+
+			/* No need to test id->bcdDevice_lo != 0, since 0 is never
+			   greater than any unsigned number. */
+			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) &&
+			    (id->bcdDevice_lo > le16_to_cpu(dev->descriptor.bcdDevice)))
+				continue;
+
+			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) &&
+			    (id->bcdDevice_hi < le16_to_cpu(dev->descriptor.bcdDevice)))
+				continue;
+
+			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) &&
+			    (id->bDeviceClass != dev->descriptor.bDeviceClass))
+				continue;
+
+			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) &&
+			    (id->bDeviceSubClass != dev->descriptor.bDeviceSubClass))
+				continue;
+
+			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) &&
+			    (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
+				continue;
 
+			return 1;
+		}
+	}
 
-	/* OTG MESSAGE: report errors here, customize to match your product */
-	dev_err(&dev->dev, "device v%04x p%04x is not supported\n",
-		le16_to_cpu(dev->descriptor.idVendor),
-		le16_to_cpu(dev->descriptor.idProduct));
+	/* add other match criteria here ... */
 
+	report_errors(dev);
 	return 0;
 }
 
diff -Nur linux-3.18.10/drivers/usb/gadget/file_storage.c linux-rpi/drivers/usb/gadget/file_storage.c
--- linux-3.18.10/drivers/usb/gadget/file_storage.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/gadget/file_storage.c	2015-03-26 11:46:54.272238167 +0100
@@ -0,0 +1,3676 @@
+/*
+ * file_storage.c -- File-backed USB Storage Gadget, for USB development
+ *
+ * Copyright (C) 2003-2008 Alan Stern
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/*
+ * The File-backed Storage Gadget acts as a USB Mass Storage device,
+ * appearing to the host as a disk drive or as a CD-ROM drive.  In addition
+ * to providing an example of a genuinely useful gadget driver for a USB
+ * device, it also illustrates a technique of double-buffering for increased
+ * throughput.  Last but not least, it gives an easy way to probe the
+ * behavior of the Mass Storage drivers in a USB host.
+ *
+ * Backing storage is provided by a regular file or a block device, specified
+ * by the "file" module parameter.  Access can be limited to read-only by
+ * setting the optional "ro" module parameter.  (For CD-ROM emulation,
+ * access is always read-only.)  The gadget will indicate that it has
+ * removable media if the optional "removable" module parameter is set.
+ *
+ * The gadget supports the Control-Bulk (CB), Control-Bulk-Interrupt (CBI),
+ * and Bulk-Only (also known as Bulk-Bulk-Bulk or BBB) transports, selected
+ * by the optional "transport" module parameter.  It also supports the
+ * following protocols: RBC (0x01), ATAPI or SFF-8020i (0x02), QIC-157 (0c03),
+ * UFI (0x04), SFF-8070i (0x05), and transparent SCSI (0x06), selected by
+ * the optional "protocol" module parameter.  In addition, the default
+ * Vendor ID, Product ID, release number and serial number can be overridden.
+ *
+ * There is support for multiple logical units (LUNs), each of which has
+ * its own backing file.  The number of LUNs can be set using the optional
+ * "luns" module parameter (anywhere from 1 to 8), and the corresponding
+ * files are specified using comma-separated lists for "file" and "ro".
+ * The default number of LUNs is taken from the number of "file" elements;
+ * it is 1 if "file" is not given.  If "removable" is not set then a backing
+ * file must be specified for each LUN.  If it is set, then an unspecified
+ * or empty backing filename means the LUN's medium is not loaded.  Ideally
+ * each LUN would be settable independently as a disk drive or a CD-ROM
+ * drive, but currently all LUNs have to be the same type.  The CD-ROM
+ * emulation includes a single data track and no audio tracks; hence there
+ * need be only one backing file per LUN.
+ *
+ * Requirements are modest; only a bulk-in and a bulk-out endpoint are
+ * needed (an interrupt-out endpoint is also needed for CBI).  The memory
+ * requirement amounts to two 16K buffers, size configurable by a parameter.
+ * Support is included for both full-speed and high-speed operation.
+ *
+ * Note that the driver is slightly non-portable in that it assumes a
+ * single memory/DMA buffer will be useable for bulk-in, bulk-out, and
+ * interrupt-in endpoints.  With most device controllers this isn't an
+ * issue, but there may be some with hardware restrictions that prevent
+ * a buffer from being used by more than one endpoint.
+ *
+ * Module options:
+ *
+ *	file=filename[,filename...]
+ *				Required if "removable" is not set, names of
+ *					the files or block devices used for
+ *					backing storage
+ *	serial=HHHH...		Required serial number (string of hex chars)
+ *	ro=b[,b...]		Default false, booleans for read-only access
+ *	removable		Default false, boolean for removable media
+ *	luns=N			Default N = number of filenames, number of
+ *					LUNs to support
+ *	nofua=b[,b...]		Default false, booleans for ignore FUA flag
+ *					in SCSI WRITE(10,12) commands
+ *	stall			Default determined according to the type of
+ *					USB device controller (usually true),
+ *					boolean to permit the driver to halt
+ *					bulk endpoints
+ *	cdrom			Default false, boolean for whether to emulate
+ *					a CD-ROM drive
+ *	transport=XXX		Default BBB, transport name (CB, CBI, or BBB)
+ *	protocol=YYY		Default SCSI, protocol name (RBC, 8020 or
+ *					ATAPI, QIC, UFI, 8070, or SCSI;
+ *					also 1 - 6)
+ *	vendor=0xVVVV		Default 0x0525 (NetChip), USB Vendor ID
+ *	product=0xPPPP		Default 0xa4a5 (FSG), USB Product ID
+ *	release=0xRRRR		Override the USB release number (bcdDevice)
+ *	buflen=N		Default N=16384, buffer size used (will be
+ *					rounded down to a multiple of
+ *					PAGE_CACHE_SIZE)
+ *
+ * If CONFIG_USB_FILE_STORAGE_TEST is not set, only the "file", "serial", "ro",
+ * "removable", "luns", "nofua", "stall", and "cdrom" options are available;
+ * default values are used for everything else.
+ *
+ * The pathnames of the backing files and the ro settings are available in
+ * the attribute files "file", "nofua", and "ro" in the lun<n> subdirectory of
+ * the gadget's sysfs directory.  If the "removable" option is set, writing to
+ * these files will simulate ejecting/loading the medium (writing an empty
+ * line means eject) and adjusting a write-enable tab.  Changes to the ro
+ * setting are not allowed when the medium is loaded or if CD-ROM emulation
+ * is being used.
+ *
+ * This gadget driver is heavily based on "Gadget Zero" by David Brownell.
+ * The driver's SCSI command interface was based on the "Information
+ * technology - Small Computer System Interface - 2" document from
+ * X3T9.2 Project 375D, Revision 10L, 7-SEP-93, available at
+ * <http://www.t10.org/ftp/t10/drafts/s2/s2-r10l.pdf>.  The single exception
+ * is opcode 0x23 (READ FORMAT CAPACITIES), which was based on the
+ * "Universal Serial Bus Mass Storage Class UFI Command Specification"
+ * document, Revision 1.0, December 14, 1998, available at
+ * <http://www.usb.org/developers/devclass_docs/usbmass-ufi10.pdf>.
+ */
+
+
+/*
+ *				Driver Design
+ *
+ * The FSG driver is fairly straightforward.  There is a main kernel
+ * thread that handles most of the work.  Interrupt routines field
+ * callbacks from the controller driver: bulk- and interrupt-request
+ * completion notifications, endpoint-0 events, and disconnect events.
+ * Completion events are passed to the main thread by wakeup calls.  Many
+ * ep0 requests are handled at interrupt time, but SetInterface,
+ * SetConfiguration, and device reset requests are forwarded to the
+ * thread in the form of "exceptions" using SIGUSR1 signals (since they
+ * should interrupt any ongoing file I/O operations).
+ *
+ * The thread's main routine implements the standard command/data/status
+ * parts of a SCSI interaction.  It and its subroutines are full of tests
+ * for pending signals/exceptions -- all this polling is necessary since
+ * the kernel has no setjmp/longjmp equivalents.  (Maybe this is an
+ * indication that the driver really wants to be running in userspace.)
+ * An important point is that so long as the thread is alive it keeps an
+ * open reference to the backing file.  This will prevent unmounting
+ * the backing file's underlying filesystem and could cause problems
+ * during system shutdown, for example.  To prevent such problems, the
+ * thread catches INT, TERM, and KILL signals and converts them into
+ * an EXIT exception.
+ *
+ * In normal operation the main thread is started during the gadget's
+ * fsg_bind() callback and stopped during fsg_unbind().  But it can also
+ * exit when it receives a signal, and there's no point leaving the
+ * gadget running when the thread is dead.  So just before the thread
+ * exits, it deregisters the gadget driver.  This makes things a little
+ * tricky: The driver is deregistered at two places, and the exiting
+ * thread can indirectly call fsg_unbind() which in turn can tell the
+ * thread to exit.  The first problem is resolved through the use of the
+ * REGISTERED atomic bitflag; the driver will only be deregistered once.
+ * The second problem is resolved by having fsg_unbind() check
+ * fsg->state; it won't try to stop the thread if the state is already
+ * FSG_STATE_TERMINATED.
+ *
+ * To provide maximum throughput, the driver uses a circular pipeline of
+ * buffer heads (struct fsg_buffhd).  In principle the pipeline can be
+ * arbitrarily long; in practice the benefits don't justify having more
+ * than 2 stages (i.e., double buffering).  But it helps to think of the
+ * pipeline as being a long one.  Each buffer head contains a bulk-in and
+ * a bulk-out request pointer (since the buffer can be used for both
+ * output and input -- directions always are given from the host's
+ * point of view) as well as a pointer to the buffer and various state
+ * variables.
+ *
+ * Use of the pipeline follows a simple protocol.  There is a variable
+ * (fsg->next_buffhd_to_fill) that points to the next buffer head to use.
+ * At any time that buffer head may still be in use from an earlier
+ * request, so each buffer head has a state variable indicating whether
+ * it is EMPTY, FULL, or BUSY.  Typical use involves waiting for the
+ * buffer head to be EMPTY, filling the buffer either by file I/O or by
+ * USB I/O (during which the buffer head is BUSY), and marking the buffer
+ * head FULL when the I/O is complete.  Then the buffer will be emptied
+ * (again possibly by USB I/O, during which it is marked BUSY) and
+ * finally marked EMPTY again (possibly by a completion routine).
+ *
+ * A module parameter tells the driver to avoid stalling the bulk
+ * endpoints wherever the transport specification allows.  This is
+ * necessary for some UDCs like the SuperH, which cannot reliably clear a
+ * halt on a bulk endpoint.  However, under certain circumstances the
+ * Bulk-only specification requires a stall.  In such cases the driver
+ * will halt the endpoint and set a flag indicating that it should clear
+ * the halt in software during the next device reset.  Hopefully this
+ * will permit everything to work correctly.  Furthermore, although the
+ * specification allows the bulk-out endpoint to halt when the host sends
+ * too much data, implementing this would cause an unavoidable race.
+ * The driver will always use the "no-stall" approach for OUT transfers.
+ *
+ * One subtle point concerns sending status-stage responses for ep0
+ * requests.  Some of these requests, such as device reset, can involve
+ * interrupting an ongoing file I/O operation, which might take an
+ * arbitrarily long time.  During that delay the host might give up on
+ * the original ep0 request and issue a new one.  When that happens the
+ * driver should not notify the host about completion of the original
+ * request, as the host will no longer be waiting for it.  So the driver
+ * assigns to each ep0 request a unique tag, and it keeps track of the
+ * tag value of the request associated with a long-running exception
+ * (device-reset, interface-change, or configuration-change).  When the
+ * exception handler is finished, the status-stage response is submitted
+ * only if the current ep0 request tag is equal to the exception request
+ * tag.  Thus only the most recently received ep0 request will get a
+ * status-stage response.
+ *
+ * Warning: This driver source file is too long.  It ought to be split up
+ * into a header file plus about 3 separate .c files, to handle the details
+ * of the Gadget, USB Mass Storage, and SCSI protocols.
+ */
+
+
+/* #define VERBOSE_DEBUG */
+/* #define DUMP_MSGS */
+
+
+#include <linux/blkdev.h>
+#include <linux/completion.h>
+#include <linux/dcache.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/fcntl.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/kref.h>
+#include <linux/kthread.h>
+#include <linux/limits.h>
+#include <linux/module.h>
+#include <linux/rwsem.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/freezer.h>
+#include <linux/utsname.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include "gadget_chips.h"
+
+
+
+/*
+ * Kbuild is not very cooperative with respect to linking separately
+ * compiled library objects into one module.  So for now we won't use
+ * separate compilation ... ensuring init/exit sections work to shrink
+ * the runtime footprint, and giving us at least some parts of what
+ * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
+ */
+#include "usbstring.c"
+#include "config.c"
+#include "epautoconf.c"
+
+/*-------------------------------------------------------------------------*/
+
+#define DRIVER_DESC		"File-backed Storage Gadget"
+#define DRIVER_NAME		"g_file_storage"
+#define DRIVER_VERSION		"1 September 2010"
+
+static       char fsg_string_manufacturer[64];
+static const char fsg_string_product[] = DRIVER_DESC;
+static const char fsg_string_config[] = "Self-powered";
+static const char fsg_string_interface[] = "Mass Storage";
+
+
+#include "storage_common.c"
+
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Alan Stern");
+MODULE_LICENSE("Dual BSD/GPL");
+
+/*
+ * This driver assumes self-powered hardware and has no way for users to
+ * trigger remote wakeup.  It uses autoconfiguration to select endpoints
+ * and endpoint addresses.
+ */
+
+
+/*-------------------------------------------------------------------------*/
+
+
+/* Encapsulate the module parameter settings */
+
+static struct {
+	char		*file[FSG_MAX_LUNS];
+	char		*serial;
+	bool		ro[FSG_MAX_LUNS];
+	bool		nofua[FSG_MAX_LUNS];
+	unsigned int	num_filenames;
+	unsigned int	num_ros;
+	unsigned int	num_nofuas;
+	unsigned int	nluns;
+
+	bool		removable;
+	bool		can_stall;
+	bool		cdrom;
+
+	char		*transport_parm;
+	char		*protocol_parm;
+	unsigned short	vendor;
+	unsigned short	product;
+	unsigned short	release;
+	unsigned int	buflen;
+
+	int		transport_type;
+	char		*transport_name;
+	int		protocol_type;
+	char		*protocol_name;
+
+} mod_data = {					// Default values
+	.transport_parm		= "BBB",
+	.protocol_parm		= "SCSI",
+	.removable		= 0,
+	.can_stall		= 1,
+	.cdrom			= 0,
+	.vendor			= FSG_VENDOR_ID,
+	.product		= FSG_PRODUCT_ID,
+	.release		= 0xffff,	// Use controller chip type
+	.buflen			= 16384,
+	};
+
+
+module_param_array_named(file, mod_data.file, charp, &mod_data.num_filenames,
+		S_IRUGO);
+MODULE_PARM_DESC(file, "names of backing files or devices");
+
+module_param_named(serial, mod_data.serial, charp, S_IRUGO);
+MODULE_PARM_DESC(serial, "USB serial number");
+
+module_param_array_named(ro, mod_data.ro, bool, &mod_data.num_ros, S_IRUGO);
+MODULE_PARM_DESC(ro, "true to force read-only");
+
+module_param_array_named(nofua, mod_data.nofua, bool, &mod_data.num_nofuas,
+		S_IRUGO);
+MODULE_PARM_DESC(nofua, "true to ignore SCSI WRITE(10,12) FUA bit");
+
+module_param_named(luns, mod_data.nluns, uint, S_IRUGO);
+MODULE_PARM_DESC(luns, "number of LUNs");
+
+module_param_named(removable, mod_data.removable, bool, S_IRUGO);
+MODULE_PARM_DESC(removable, "true to simulate removable media");
+
+module_param_named(stall, mod_data.can_stall, bool, S_IRUGO);
+MODULE_PARM_DESC(stall, "false to prevent bulk stalls");
+
+module_param_named(cdrom, mod_data.cdrom, bool, S_IRUGO);
+MODULE_PARM_DESC(cdrom, "true to emulate cdrom instead of disk");
+
+/* In the non-TEST version, only the module parameters listed above
+ * are available. */
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+
+module_param_named(transport, mod_data.transport_parm, charp, S_IRUGO);
+MODULE_PARM_DESC(transport, "type of transport (BBB, CBI, or CB)");
+
+module_param_named(protocol, mod_data.protocol_parm, charp, S_IRUGO);
+MODULE_PARM_DESC(protocol, "type of protocol (RBC, 8020, QIC, UFI, "
+		"8070, or SCSI)");
+
+module_param_named(vendor, mod_data.vendor, ushort, S_IRUGO);
+MODULE_PARM_DESC(vendor, "USB Vendor ID");
+
+module_param_named(product, mod_data.product, ushort, S_IRUGO);
+MODULE_PARM_DESC(product, "USB Product ID");
+
+module_param_named(release, mod_data.release, ushort, S_IRUGO);
+MODULE_PARM_DESC(release, "USB release number");
+
+module_param_named(buflen, mod_data.buflen, uint, S_IRUGO);
+MODULE_PARM_DESC(buflen, "I/O buffer size");
+
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+
+/*
+ * These definitions will permit the compiler to avoid generating code for
+ * parts of the driver that aren't used in the non-TEST version.  Even gcc
+ * can recognize when a test of a constant expression yields a dead code
+ * path.
+ */
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+
+#define transport_is_bbb()	(mod_data.transport_type == USB_PR_BULK)
+#define transport_is_cbi()	(mod_data.transport_type == USB_PR_CBI)
+#define protocol_is_scsi()	(mod_data.protocol_type == USB_SC_SCSI)
+
+#else
+
+#define transport_is_bbb()	1
+#define transport_is_cbi()	0
+#define protocol_is_scsi()	1
+
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+
+/*-------------------------------------------------------------------------*/
+
+
+struct fsg_dev {
+	/* lock protects: state, all the req_busy's, and cbbuf_cmnd */
+	spinlock_t		lock;
+	struct usb_gadget	*gadget;
+
+	/* filesem protects: backing files in use */
+	struct rw_semaphore	filesem;
+
+	/* reference counting: wait until all LUNs are released */
+	struct kref		ref;
+
+	struct usb_ep		*ep0;		// Handy copy of gadget->ep0
+	struct usb_request	*ep0req;	// For control responses
+	unsigned int		ep0_req_tag;
+	const char		*ep0req_name;
+
+	struct usb_request	*intreq;	// For interrupt responses
+	int			intreq_busy;
+	struct fsg_buffhd	*intr_buffhd;
+
+	unsigned int		bulk_out_maxpacket;
+	enum fsg_state		state;		// For exception handling
+	unsigned int		exception_req_tag;
+
+	u8			config, new_config;
+
+	unsigned int		running : 1;
+	unsigned int		bulk_in_enabled : 1;
+	unsigned int		bulk_out_enabled : 1;
+	unsigned int		intr_in_enabled : 1;
+	unsigned int		phase_error : 1;
+	unsigned int		short_packet_received : 1;
+	unsigned int		bad_lun_okay : 1;
+
+	unsigned long		atomic_bitflags;
+#define REGISTERED		0
+#define IGNORE_BULK_OUT		1
+#define SUSPENDED		2
+
+	struct usb_ep		*bulk_in;
+	struct usb_ep		*bulk_out;
+	struct usb_ep		*intr_in;
+
+	struct fsg_buffhd	*next_buffhd_to_fill;
+	struct fsg_buffhd	*next_buffhd_to_drain;
+
+	int			thread_wakeup_needed;
+	struct completion	thread_notifier;
+	struct task_struct	*thread_task;
+
+	int			cmnd_size;
+	u8			cmnd[MAX_COMMAND_SIZE];
+	enum data_direction	data_dir;
+	u32			data_size;
+	u32			data_size_from_cmnd;
+	u32			tag;
+	unsigned int		lun;
+	u32			residue;
+	u32			usb_amount_left;
+
+	/* The CB protocol offers no way for a host to know when a command
+	 * has completed.  As a result the next command may arrive early,
+	 * and we will still have to handle it.  For that reason we need
+	 * a buffer to store new commands when using CB (or CBI, which
+	 * does not oblige a host to wait for command completion either). */
+	int			cbbuf_cmnd_size;
+	u8			cbbuf_cmnd[MAX_COMMAND_SIZE];
+
+	unsigned int		nluns;
+	struct fsg_lun		*luns;
+	struct fsg_lun		*curlun;
+	/* Must be the last entry */
+	struct fsg_buffhd	buffhds[];
+};
+
+typedef void (*fsg_routine_t)(struct fsg_dev *);
+
+static int exception_in_progress(struct fsg_dev *fsg)
+{
+	return (fsg->state > FSG_STATE_IDLE);
+}
+
+/* Make bulk-out requests be divisible by the maxpacket size */
+static void set_bulk_out_req_length(struct fsg_dev *fsg,
+		struct fsg_buffhd *bh, unsigned int length)
+{
+	unsigned int	rem;
+
+	bh->bulk_out_intended_length = length;
+	rem = length % fsg->bulk_out_maxpacket;
+	if (rem > 0)
+		length += fsg->bulk_out_maxpacket - rem;
+	bh->outreq->length = length;
+}
+
+static struct fsg_dev			*the_fsg;
+static struct usb_gadget_driver		fsg_driver;
+
+
+/*-------------------------------------------------------------------------*/
+
+static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep)
+{
+	const char	*name;
+
+	if (ep == fsg->bulk_in)
+		name = "bulk-in";
+	else if (ep == fsg->bulk_out)
+		name = "bulk-out";
+	else
+		name = ep->name;
+	DBG(fsg, "%s set halt\n", name);
+	return usb_ep_set_halt(ep);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * DESCRIPTORS ... most are static, but strings and (full) configuration
+ * descriptors are built on demand.  Also the (static) config and interface
+ * descriptors are adjusted during fsg_bind().
+ */
+
+/* There is only one configuration. */
+#define	CONFIG_VALUE		1
+
+static struct usb_device_descriptor
+device_desc = {
+	.bLength =		sizeof device_desc,
+	.bDescriptorType =	USB_DT_DEVICE,
+
+	.bcdUSB =		cpu_to_le16(0x0200),
+	.bDeviceClass =		USB_CLASS_PER_INTERFACE,
+
+	/* The next three values can be overridden by module parameters */
+	.idVendor =		cpu_to_le16(FSG_VENDOR_ID),
+	.idProduct =		cpu_to_le16(FSG_PRODUCT_ID),
+	.bcdDevice =		cpu_to_le16(0xffff),
+
+	.iManufacturer =	FSG_STRING_MANUFACTURER,
+	.iProduct =		FSG_STRING_PRODUCT,
+	.iSerialNumber =	FSG_STRING_SERIAL,
+	.bNumConfigurations =	1,
+};
+
+static struct usb_config_descriptor
+config_desc = {
+	.bLength =		sizeof config_desc,
+	.bDescriptorType =	USB_DT_CONFIG,
+
+	/* wTotalLength computed by usb_gadget_config_buf() */
+	.bNumInterfaces =	1,
+	.bConfigurationValue =	CONFIG_VALUE,
+	.iConfiguration =	FSG_STRING_CONFIG,
+	.bmAttributes =		USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
+	.bMaxPower =		CONFIG_USB_GADGET_VBUS_DRAW / 2,
+};
+
+
+static struct usb_qualifier_descriptor
+dev_qualifier = {
+	.bLength =		sizeof dev_qualifier,
+	.bDescriptorType =	USB_DT_DEVICE_QUALIFIER,
+
+	.bcdUSB =		cpu_to_le16(0x0200),
+	.bDeviceClass =		USB_CLASS_PER_INTERFACE,
+
+	.bNumConfigurations =	1,
+};
+
+static int populate_bos(struct fsg_dev *fsg, u8 *buf)
+{
+	memcpy(buf, &fsg_bos_desc, USB_DT_BOS_SIZE);
+	buf += USB_DT_BOS_SIZE;
+
+	memcpy(buf, &fsg_ext_cap_desc, USB_DT_USB_EXT_CAP_SIZE);
+	buf += USB_DT_USB_EXT_CAP_SIZE;
+
+	memcpy(buf, &fsg_ss_cap_desc, USB_DT_USB_SS_CAP_SIZE);
+
+	return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE
+		+ USB_DT_USB_EXT_CAP_SIZE;
+}
+
+/*
+ * Config descriptors must agree with the code that sets configurations
+ * and with code managing interfaces and their altsettings.  They must
+ * also handle different speeds and other-speed requests.
+ */
+static int populate_config_buf(struct usb_gadget *gadget,
+		u8 *buf, u8 type, unsigned index)
+{
+	enum usb_device_speed			speed = gadget->speed;
+	int					len;
+	const struct usb_descriptor_header	**function;
+
+	if (index > 0)
+		return -EINVAL;
+
+	if (gadget_is_dualspeed(gadget) && type == USB_DT_OTHER_SPEED_CONFIG)
+		speed = (USB_SPEED_FULL + USB_SPEED_HIGH) - speed;
+	function = gadget_is_dualspeed(gadget) && speed == USB_SPEED_HIGH
+		? (const struct usb_descriptor_header **)fsg_hs_function
+		: (const struct usb_descriptor_header **)fsg_fs_function;
+
+	/* for now, don't advertise srp-only devices */
+	if (!gadget_is_otg(gadget))
+		function++;
+
+	len = usb_gadget_config_buf(&config_desc, buf, EP0_BUFSIZE, function);
+	((struct usb_config_descriptor *) buf)->bDescriptorType = type;
+	return len;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* These routines may be called in process context or in_irq */
+
+/* Caller must hold fsg->lock */
+static void wakeup_thread(struct fsg_dev *fsg)
+{
+	/* Tell the main thread that something has happened */
+	fsg->thread_wakeup_needed = 1;
+	if (fsg->thread_task)
+		wake_up_process(fsg->thread_task);
+}
+
+
+static void raise_exception(struct fsg_dev *fsg, enum fsg_state new_state)
+{
+	unsigned long		flags;
+
+	/* Do nothing if a higher-priority exception is already in progress.
+	 * If a lower-or-equal priority exception is in progress, preempt it
+	 * and notify the main thread by sending it a signal. */
+	spin_lock_irqsave(&fsg->lock, flags);
+	if (fsg->state <= new_state) {
+		fsg->exception_req_tag = fsg->ep0_req_tag;
+		fsg->state = new_state;
+		if (fsg->thread_task)
+			send_sig_info(SIGUSR1, SEND_SIG_FORCED,
+					fsg->thread_task);
+	}
+	spin_unlock_irqrestore(&fsg->lock, flags);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* The disconnect callback and ep0 routines.  These always run in_irq,
+ * except that ep0_queue() is called in the main thread to acknowledge
+ * completion of various requests: set config, set interface, and
+ * Bulk-only device reset. */
+
+static void fsg_disconnect(struct usb_gadget *gadget)
+{
+	struct fsg_dev		*fsg = get_gadget_data(gadget);
+
+	DBG(fsg, "disconnect or port reset\n");
+	raise_exception(fsg, FSG_STATE_DISCONNECT);
+}
+
+
+static int ep0_queue(struct fsg_dev *fsg)
+{
+	int	rc;
+
+	rc = usb_ep_queue(fsg->ep0, fsg->ep0req, GFP_ATOMIC);
+	if (rc != 0 && rc != -ESHUTDOWN) {
+
+		/* We can't do much more than wait for a reset */
+		WARNING(fsg, "error in submission: %s --> %d\n",
+				fsg->ep0->name, rc);
+	}
+	return rc;
+}
+
+static void ep0_complete(struct usb_ep *ep, struct usb_request *req)
+{
+	struct fsg_dev		*fsg = ep->driver_data;
+
+	if (req->actual > 0)
+		dump_msg(fsg, fsg->ep0req_name, req->buf, req->actual);
+	if (req->status || req->actual != req->length)
+		DBG(fsg, "%s --> %d, %u/%u\n", __func__,
+				req->status, req->actual, req->length);
+	if (req->status == -ECONNRESET)		// Request was cancelled
+		usb_ep_fifo_flush(ep);
+
+	if (req->status == 0 && req->context)
+		((fsg_routine_t) (req->context))(fsg);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* Bulk and interrupt endpoint completion handlers.
+ * These always run in_irq. */
+
+static void bulk_in_complete(struct usb_ep *ep, struct usb_request *req)
+{
+	struct fsg_dev		*fsg = ep->driver_data;
+	struct fsg_buffhd	*bh = req->context;
+
+	if (req->status || req->actual != req->length)
+		DBG(fsg, "%s --> %d, %u/%u\n", __func__,
+				req->status, req->actual, req->length);
+	if (req->status == -ECONNRESET)		// Request was cancelled
+		usb_ep_fifo_flush(ep);
+
+	/* Hold the lock while we update the request and buffer states */
+	smp_wmb();
+	spin_lock(&fsg->lock);
+	bh->inreq_busy = 0;
+	bh->state = BUF_STATE_EMPTY;
+	wakeup_thread(fsg);
+	spin_unlock(&fsg->lock);
+}
+
+static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req)
+{
+	struct fsg_dev		*fsg = ep->driver_data;
+	struct fsg_buffhd	*bh = req->context;
+
+	dump_msg(fsg, "bulk-out", req->buf, req->actual);
+	if (req->status || req->actual != bh->bulk_out_intended_length)
+		DBG(fsg, "%s --> %d, %u/%u\n", __func__,
+				req->status, req->actual,
+				bh->bulk_out_intended_length);
+	if (req->status == -ECONNRESET)		// Request was cancelled
+		usb_ep_fifo_flush(ep);
+
+	/* Hold the lock while we update the request and buffer states */
+	smp_wmb();
+	spin_lock(&fsg->lock);
+	bh->outreq_busy = 0;
+	bh->state = BUF_STATE_FULL;
+	wakeup_thread(fsg);
+	spin_unlock(&fsg->lock);
+}
+
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+static void intr_in_complete(struct usb_ep *ep, struct usb_request *req)
+{
+	struct fsg_dev		*fsg = ep->driver_data;
+	struct fsg_buffhd	*bh = req->context;
+
+	if (req->status || req->actual != req->length)
+		DBG(fsg, "%s --> %d, %u/%u\n", __func__,
+				req->status, req->actual, req->length);
+	if (req->status == -ECONNRESET)		// Request was cancelled
+		usb_ep_fifo_flush(ep);
+
+	/* Hold the lock while we update the request and buffer states */
+	smp_wmb();
+	spin_lock(&fsg->lock);
+	fsg->intreq_busy = 0;
+	bh->state = BUF_STATE_EMPTY;
+	wakeup_thread(fsg);
+	spin_unlock(&fsg->lock);
+}
+
+#else
+static void intr_in_complete(struct usb_ep *ep, struct usb_request *req)
+{}
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+
+/*-------------------------------------------------------------------------*/
+
+/* Ep0 class-specific handlers.  These always run in_irq. */
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+static void received_cbi_adsc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+	struct usb_request	*req = fsg->ep0req;
+	static u8		cbi_reset_cmnd[6] = {
+			SEND_DIAGNOSTIC, 4, 0xff, 0xff, 0xff, 0xff};
+
+	/* Error in command transfer? */
+	if (req->status || req->length != req->actual ||
+			req->actual < 6 || req->actual > MAX_COMMAND_SIZE) {
+
+		/* Not all controllers allow a protocol stall after
+		 * receiving control-out data, but we'll try anyway. */
+		fsg_set_halt(fsg, fsg->ep0);
+		return;			// Wait for reset
+	}
+
+	/* Is it the special reset command? */
+	if (req->actual >= sizeof cbi_reset_cmnd &&
+			memcmp(req->buf, cbi_reset_cmnd,
+				sizeof cbi_reset_cmnd) == 0) {
+
+		/* Raise an exception to stop the current operation
+		 * and reinitialize our state. */
+		DBG(fsg, "cbi reset request\n");
+		raise_exception(fsg, FSG_STATE_RESET);
+		return;
+	}
+
+	VDBG(fsg, "CB[I] accept device-specific command\n");
+	spin_lock(&fsg->lock);
+
+	/* Save the command for later */
+	if (fsg->cbbuf_cmnd_size)
+		WARNING(fsg, "CB[I] overwriting previous command\n");
+	fsg->cbbuf_cmnd_size = req->actual;
+	memcpy(fsg->cbbuf_cmnd, req->buf, fsg->cbbuf_cmnd_size);
+
+	wakeup_thread(fsg);
+	spin_unlock(&fsg->lock);
+}
+
+#else
+static void received_cbi_adsc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{}
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+
+static int class_setup_req(struct fsg_dev *fsg,
+		const struct usb_ctrlrequest *ctrl)
+{
+	struct usb_request	*req = fsg->ep0req;
+	int			value = -EOPNOTSUPP;
+	u16			w_index = le16_to_cpu(ctrl->wIndex);
+	u16                     w_value = le16_to_cpu(ctrl->wValue);
+	u16			w_length = le16_to_cpu(ctrl->wLength);
+
+	if (!fsg->config)
+		return value;
+
+	/* Handle Bulk-only class-specific requests */
+	if (transport_is_bbb()) {
+		switch (ctrl->bRequest) {
+
+		case US_BULK_RESET_REQUEST:
+			if (ctrl->bRequestType != (USB_DIR_OUT |
+					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
+				break;
+			if (w_index != 0 || w_value != 0 || w_length != 0) {
+				value = -EDOM;
+				break;
+			}
+
+			/* Raise an exception to stop the current operation
+			 * and reinitialize our state. */
+			DBG(fsg, "bulk reset request\n");
+			raise_exception(fsg, FSG_STATE_RESET);
+			value = DELAYED_STATUS;
+			break;
+
+		case US_BULK_GET_MAX_LUN:
+			if (ctrl->bRequestType != (USB_DIR_IN |
+					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
+				break;
+			if (w_index != 0 || w_value != 0 || w_length != 1) {
+				value = -EDOM;
+				break;
+			}
+			VDBG(fsg, "get max LUN\n");
+			*(u8 *) req->buf = fsg->nluns - 1;
+			value = 1;
+			break;
+		}
+	}
+
+	/* Handle CBI class-specific requests */
+	else {
+		switch (ctrl->bRequest) {
+
+		case USB_CBI_ADSC_REQUEST:
+			if (ctrl->bRequestType != (USB_DIR_OUT |
+					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
+				break;
+			if (w_index != 0 || w_value != 0) {
+				value = -EDOM;
+				break;
+			}
+			if (w_length > MAX_COMMAND_SIZE) {
+				value = -EOVERFLOW;
+				break;
+			}
+			value = w_length;
+			fsg->ep0req->context = received_cbi_adsc;
+			break;
+		}
+	}
+
+	if (value == -EOPNOTSUPP)
+		VDBG(fsg,
+			"unknown class-specific control req "
+			"%02x.%02x v%04x i%04x l%u\n",
+			ctrl->bRequestType, ctrl->bRequest,
+			le16_to_cpu(ctrl->wValue), w_index, w_length);
+	return value;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* Ep0 standard request handlers.  These always run in_irq. */
+
+static int standard_setup_req(struct fsg_dev *fsg,
+		const struct usb_ctrlrequest *ctrl)
+{
+	struct usb_request	*req = fsg->ep0req;
+	int			value = -EOPNOTSUPP;
+	u16			w_index = le16_to_cpu(ctrl->wIndex);
+	u16			w_value = le16_to_cpu(ctrl->wValue);
+
+	/* Usually this just stores reply data in the pre-allocated ep0 buffer,
+	 * but config change events will also reconfigure hardware. */
+	switch (ctrl->bRequest) {
+
+	case USB_REQ_GET_DESCRIPTOR:
+		if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD |
+				USB_RECIP_DEVICE))
+			break;
+		switch (w_value >> 8) {
+
+		case USB_DT_DEVICE:
+			VDBG(fsg, "get device descriptor\n");
+			device_desc.bMaxPacketSize0 = fsg->ep0->maxpacket;
+			value = sizeof device_desc;
+			memcpy(req->buf, &device_desc, value);
+			break;
+		case USB_DT_DEVICE_QUALIFIER:
+			VDBG(fsg, "get device qualifier\n");
+			if (!gadget_is_dualspeed(fsg->gadget) ||
+					fsg->gadget->speed == USB_SPEED_SUPER)
+				break;
+			/*
+			 * Assume ep0 uses the same maxpacket value for both
+			 * speeds
+			 */
+			dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket;
+			value = sizeof dev_qualifier;
+			memcpy(req->buf, &dev_qualifier, value);
+			break;
+
+		case USB_DT_OTHER_SPEED_CONFIG:
+			VDBG(fsg, "get other-speed config descriptor\n");
+			if (!gadget_is_dualspeed(fsg->gadget) ||
+					fsg->gadget->speed == USB_SPEED_SUPER)
+				break;
+			goto get_config;
+		case USB_DT_CONFIG:
+			VDBG(fsg, "get configuration descriptor\n");
+get_config:
+			value = populate_config_buf(fsg->gadget,
+					req->buf,
+					w_value >> 8,
+					w_value & 0xff);
+			break;
+
+		case USB_DT_STRING:
+			VDBG(fsg, "get string descriptor\n");
+
+			/* wIndex == language code */
+			value = usb_gadget_get_string(&fsg_stringtab,
+					w_value & 0xff, req->buf);
+			break;
+
+		case USB_DT_BOS:
+			VDBG(fsg, "get bos descriptor\n");
+
+			if (gadget_is_superspeed(fsg->gadget))
+				value = populate_bos(fsg, req->buf);
+			break;
+		}
+
+		break;
+
+	/* One config, two speeds */
+	case USB_REQ_SET_CONFIGURATION:
+		if (ctrl->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD |
+				USB_RECIP_DEVICE))
+			break;
+		VDBG(fsg, "set configuration\n");
+		if (w_value == CONFIG_VALUE || w_value == 0) {
+			fsg->new_config = w_value;
+
+			/* Raise an exception to wipe out previous transaction
+			 * state (queued bufs, etc) and set the new config. */
+			raise_exception(fsg, FSG_STATE_CONFIG_CHANGE);
+			value = DELAYED_STATUS;
+		}
+		break;
+	case USB_REQ_GET_CONFIGURATION:
+		if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD |
+				USB_RECIP_DEVICE))
+			break;
+		VDBG(fsg, "get configuration\n");
+		*(u8 *) req->buf = fsg->config;
+		value = 1;
+		break;
+
+	case USB_REQ_SET_INTERFACE:
+		if (ctrl->bRequestType != (USB_DIR_OUT| USB_TYPE_STANDARD |
+				USB_RECIP_INTERFACE))
+			break;
+		if (fsg->config && w_index == 0) {
+
+			/* Raise an exception to wipe out previous transaction
+			 * state (queued bufs, etc) and install the new
+			 * interface altsetting. */
+			raise_exception(fsg, FSG_STATE_INTERFACE_CHANGE);
+			value = DELAYED_STATUS;
+		}
+		break;
+	case USB_REQ_GET_INTERFACE:
+		if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD |
+				USB_RECIP_INTERFACE))
+			break;
+		if (!fsg->config)
+			break;
+		if (w_index != 0) {
+			value = -EDOM;
+			break;
+		}
+		VDBG(fsg, "get interface\n");
+		*(u8 *) req->buf = 0;
+		value = 1;
+		break;
+
+	default:
+		VDBG(fsg,
+			"unknown control req %02x.%02x v%04x i%04x l%u\n",
+			ctrl->bRequestType, ctrl->bRequest,
+			w_value, w_index, le16_to_cpu(ctrl->wLength));
+	}
+
+	return value;
+}
+
+
+static int fsg_setup(struct usb_gadget *gadget,
+		const struct usb_ctrlrequest *ctrl)
+{
+	struct fsg_dev		*fsg = get_gadget_data(gadget);
+	int			rc;
+	int			w_length = le16_to_cpu(ctrl->wLength);
+
+	++fsg->ep0_req_tag;		// Record arrival of a new request
+	fsg->ep0req->context = NULL;
+	fsg->ep0req->length = 0;
+	dump_msg(fsg, "ep0-setup", (u8 *) ctrl, sizeof(*ctrl));
+
+	if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS)
+		rc = class_setup_req(fsg, ctrl);
+	else
+		rc = standard_setup_req(fsg, ctrl);
+
+	/* Respond with data/status or defer until later? */
+	if (rc >= 0 && rc != DELAYED_STATUS) {
+		rc = min(rc, w_length);
+		fsg->ep0req->length = rc;
+		fsg->ep0req->zero = rc < w_length;
+		fsg->ep0req_name = (ctrl->bRequestType & USB_DIR_IN ?
+				"ep0-in" : "ep0-out");
+		rc = ep0_queue(fsg);
+	}
+
+	/* Device either stalls (rc < 0) or reports success */
+	return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* All the following routines run in process context */
+
+
+/* Use this for bulk or interrupt transfers, not ep0 */
+static void start_transfer(struct fsg_dev *fsg, struct usb_ep *ep,
+		struct usb_request *req, int *pbusy,
+		enum fsg_buffer_state *state)
+{
+	int	rc;
+
+	if (ep == fsg->bulk_in)
+		dump_msg(fsg, "bulk-in", req->buf, req->length);
+	else if (ep == fsg->intr_in)
+		dump_msg(fsg, "intr-in", req->buf, req->length);
+
+	spin_lock_irq(&fsg->lock);
+	*pbusy = 1;
+	*state = BUF_STATE_BUSY;
+	spin_unlock_irq(&fsg->lock);
+	rc = usb_ep_queue(ep, req, GFP_KERNEL);
+	if (rc != 0) {
+		*pbusy = 0;
+		*state = BUF_STATE_EMPTY;
+
+		/* We can't do much more than wait for a reset */
+
+		/* Note: currently the net2280 driver fails zero-length
+		 * submissions if DMA is enabled. */
+		if (rc != -ESHUTDOWN && !(rc == -EOPNOTSUPP &&
+						req->length == 0))
+			WARNING(fsg, "error in submission: %s --> %d\n",
+					ep->name, rc);
+	}
+}
+
+
+static int sleep_thread(struct fsg_dev *fsg)
+{
+	int	rc = 0;
+
+	/* Wait until a signal arrives or we are woken up */
+	for (;;) {
+		try_to_freeze();
+		set_current_state(TASK_INTERRUPTIBLE);
+		if (signal_pending(current)) {
+			rc = -EINTR;
+			break;
+		}
+		if (fsg->thread_wakeup_needed)
+			break;
+		schedule();
+	}
+	__set_current_state(TASK_RUNNING);
+	fsg->thread_wakeup_needed = 0;
+	return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int do_read(struct fsg_dev *fsg)
+{
+	struct fsg_lun		*curlun = fsg->curlun;
+	u32			lba;
+	struct fsg_buffhd	*bh;
+	int			rc;
+	u32			amount_left;
+	loff_t			file_offset, file_offset_tmp;
+	unsigned int		amount;
+	ssize_t			nread;
+
+	/* Get the starting Logical Block Address and check that it's
+	 * not too big */
+	if (fsg->cmnd[0] == READ_6)
+		lba = get_unaligned_be24(&fsg->cmnd[1]);
+	else {
+		lba = get_unaligned_be32(&fsg->cmnd[2]);
+
+		/* We allow DPO (Disable Page Out = don't save data in the
+		 * cache) and FUA (Force Unit Access = don't read from the
+		 * cache), but we don't implement them. */
+		if ((fsg->cmnd[1] & ~0x18) != 0) {
+			curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+			return -EINVAL;
+		}
+	}
+	if (lba >= curlun->num_sectors) {
+		curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+		return -EINVAL;
+	}
+	file_offset = ((loff_t) lba) << curlun->blkbits;
+
+	/* Carry out the file reads */
+	amount_left = fsg->data_size_from_cmnd;
+	if (unlikely(amount_left == 0))
+		return -EIO;		// No default reply
+
+	for (;;) {
+
+		/* Figure out how much we need to read:
+		 * Try to read the remaining amount.
+		 * But don't read more than the buffer size.
+		 * And don't try to read past the end of the file.
+		 */
+		amount = min((unsigned int) amount_left, mod_data.buflen);
+		amount = min((loff_t) amount,
+				curlun->file_length - file_offset);
+
+		/* Wait for the next buffer to become available */
+		bh = fsg->next_buffhd_to_fill;
+		while (bh->state != BUF_STATE_EMPTY) {
+			rc = sleep_thread(fsg);
+			if (rc)
+				return rc;
+		}
+
+		/* If we were asked to read past the end of file,
+		 * end with an empty buffer. */
+		if (amount == 0) {
+			curlun->sense_data =
+					SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+			curlun->sense_data_info = file_offset >> curlun->blkbits;
+			curlun->info_valid = 1;
+			bh->inreq->length = 0;
+			bh->state = BUF_STATE_FULL;
+			break;
+		}
+
+		/* Perform the read */
+		file_offset_tmp = file_offset;
+		nread = vfs_read(curlun->filp,
+				(char __user *) bh->buf,
+				amount, &file_offset_tmp);
+		VLDBG(curlun, "file read %u @ %llu -> %d\n", amount,
+				(unsigned long long) file_offset,
+				(int) nread);
+		if (signal_pending(current))
+			return -EINTR;
+
+		if (nread < 0) {
+			LDBG(curlun, "error in file read: %d\n",
+					(int) nread);
+			nread = 0;
+		} else if (nread < amount) {
+			LDBG(curlun, "partial file read: %d/%u\n",
+					(int) nread, amount);
+			nread = round_down(nread, curlun->blksize);
+		}
+		file_offset  += nread;
+		amount_left  -= nread;
+		fsg->residue -= nread;
+
+		/* Except at the end of the transfer, nread will be
+		 * equal to the buffer size, which is divisible by the
+		 * bulk-in maxpacket size.
+		 */
+		bh->inreq->length = nread;
+		bh->state = BUF_STATE_FULL;
+
+		/* If an error occurred, report it and its position */
+		if (nread < amount) {
+			curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
+			curlun->sense_data_info = file_offset >> curlun->blkbits;
+			curlun->info_valid = 1;
+			break;
+		}
+
+		if (amount_left == 0)
+			break;		// No more left to read
+
+		/* Send this buffer and go read some more */
+		bh->inreq->zero = 0;
+		start_transfer(fsg, fsg->bulk_in, bh->inreq,
+				&bh->inreq_busy, &bh->state);
+		fsg->next_buffhd_to_fill = bh->next;
+	}
+
+	return -EIO;		// No default reply
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int do_write(struct fsg_dev *fsg)
+{
+	struct fsg_lun		*curlun = fsg->curlun;
+	u32			lba;
+	struct fsg_buffhd	*bh;
+	int			get_some_more;
+	u32			amount_left_to_req, amount_left_to_write;
+	loff_t			usb_offset, file_offset, file_offset_tmp;
+	unsigned int		amount;
+	ssize_t			nwritten;
+	int			rc;
+
+	if (curlun->ro) {
+		curlun->sense_data = SS_WRITE_PROTECTED;
+		return -EINVAL;
+	}
+	spin_lock(&curlun->filp->f_lock);
+	curlun->filp->f_flags &= ~O_SYNC;	// Default is not to wait
+	spin_unlock(&curlun->filp->f_lock);
+
+	/* Get the starting Logical Block Address and check that it's
+	 * not too big */
+	if (fsg->cmnd[0] == WRITE_6)
+		lba = get_unaligned_be24(&fsg->cmnd[1]);
+	else {
+		lba = get_unaligned_be32(&fsg->cmnd[2]);
+
+		/* We allow DPO (Disable Page Out = don't save data in the
+		 * cache) and FUA (Force Unit Access = write directly to the
+		 * medium).  We don't implement DPO; we implement FUA by
+		 * performing synchronous output. */
+		if ((fsg->cmnd[1] & ~0x18) != 0) {
+			curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+			return -EINVAL;
+		}
+		/* FUA */
+		if (!curlun->nofua && (fsg->cmnd[1] & 0x08)) {
+			spin_lock(&curlun->filp->f_lock);
+			curlun->filp->f_flags |= O_DSYNC;
+			spin_unlock(&curlun->filp->f_lock);
+		}
+	}
+	if (lba >= curlun->num_sectors) {
+		curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+		return -EINVAL;
+	}
+
+	/* Carry out the file writes */
+	get_some_more = 1;
+	file_offset = usb_offset = ((loff_t) lba) << curlun->blkbits;
+	amount_left_to_req = amount_left_to_write = fsg->data_size_from_cmnd;
+
+	while (amount_left_to_write > 0) {
+
+		/* Queue a request for more data from the host */
+		bh = fsg->next_buffhd_to_fill;
+		if (bh->state == BUF_STATE_EMPTY && get_some_more) {
+
+			/* Figure out how much we want to get:
+			 * Try to get the remaining amount,
+			 * but not more than the buffer size.
+			 */
+			amount = min(amount_left_to_req, mod_data.buflen);
+
+			/* Beyond the end of the backing file? */
+			if (usb_offset >= curlun->file_length) {
+				get_some_more = 0;
+				curlun->sense_data =
+					SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+				curlun->sense_data_info = usb_offset >> curlun->blkbits;
+				curlun->info_valid = 1;
+				continue;
+			}
+
+			/* Get the next buffer */
+			usb_offset += amount;
+			fsg->usb_amount_left -= amount;
+			amount_left_to_req -= amount;
+			if (amount_left_to_req == 0)
+				get_some_more = 0;
+
+			/* Except at the end of the transfer, amount will be
+			 * equal to the buffer size, which is divisible by
+			 * the bulk-out maxpacket size.
+			 */
+			set_bulk_out_req_length(fsg, bh, amount);
+			start_transfer(fsg, fsg->bulk_out, bh->outreq,
+					&bh->outreq_busy, &bh->state);
+			fsg->next_buffhd_to_fill = bh->next;
+			continue;
+		}
+
+		/* Write the received data to the backing file */
+		bh = fsg->next_buffhd_to_drain;
+		if (bh->state == BUF_STATE_EMPTY && !get_some_more)
+			break;			// We stopped early
+		if (bh->state == BUF_STATE_FULL) {
+			smp_rmb();
+			fsg->next_buffhd_to_drain = bh->next;
+			bh->state = BUF_STATE_EMPTY;
+
+			/* Did something go wrong with the transfer? */
+			if (bh->outreq->status != 0) {
+				curlun->sense_data = SS_COMMUNICATION_FAILURE;
+				curlun->sense_data_info = file_offset >> curlun->blkbits;
+				curlun->info_valid = 1;
+				break;
+			}
+
+			amount = bh->outreq->actual;
+			if (curlun->file_length - file_offset < amount) {
+				LERROR(curlun,
+	"write %u @ %llu beyond end %llu\n",
+	amount, (unsigned long long) file_offset,
+	(unsigned long long) curlun->file_length);
+				amount = curlun->file_length - file_offset;
+			}
+
+			/* Don't accept excess data.  The spec doesn't say
+			 * what to do in this case.  We'll ignore the error.
+			 */
+			amount = min(amount, bh->bulk_out_intended_length);
+
+			/* Don't write a partial block */
+			amount = round_down(amount, curlun->blksize);
+			if (amount == 0)
+				goto empty_write;
+
+			/* Perform the write */
+			file_offset_tmp = file_offset;
+			nwritten = vfs_write(curlun->filp,
+					(char __user *) bh->buf,
+					amount, &file_offset_tmp);
+			VLDBG(curlun, "file write %u @ %llu -> %d\n", amount,
+					(unsigned long long) file_offset,
+					(int) nwritten);
+			if (signal_pending(current))
+				return -EINTR;		// Interrupted!
+
+			if (nwritten < 0) {
+				LDBG(curlun, "error in file write: %d\n",
+						(int) nwritten);
+				nwritten = 0;
+			} else if (nwritten < amount) {
+				LDBG(curlun, "partial file write: %d/%u\n",
+						(int) nwritten, amount);
+				nwritten = round_down(nwritten, curlun->blksize);
+			}
+			file_offset += nwritten;
+			amount_left_to_write -= nwritten;
+			fsg->residue -= nwritten;
+
+			/* If an error occurred, report it and its position */
+			if (nwritten < amount) {
+				curlun->sense_data = SS_WRITE_ERROR;
+				curlun->sense_data_info = file_offset >> curlun->blkbits;
+				curlun->info_valid = 1;
+				break;
+			}
+
+ empty_write:
+			/* Did the host decide to stop early? */
+			if (bh->outreq->actual < bh->bulk_out_intended_length) {
+				fsg->short_packet_received = 1;
+				break;
+			}
+			continue;
+		}
+
+		/* Wait for something to happen */
+		rc = sleep_thread(fsg);
+		if (rc)
+			return rc;
+	}
+
+	return -EIO;		// No default reply
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int do_synchronize_cache(struct fsg_dev *fsg)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+	int		rc;
+
+	/* We ignore the requested LBA and write out all file's
+	 * dirty data buffers. */
+	rc = fsg_lun_fsync_sub(curlun);
+	if (rc)
+		curlun->sense_data = SS_WRITE_ERROR;
+	return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static void invalidate_sub(struct fsg_lun *curlun)
+{
+	struct file	*filp = curlun->filp;
+	struct inode	*inode = filp->f_path.dentry->d_inode;
+	unsigned long	rc;
+
+	rc = invalidate_mapping_pages(inode->i_mapping, 0, -1);
+	VLDBG(curlun, "invalidate_mapping_pages -> %ld\n", rc);
+}
+
+static int do_verify(struct fsg_dev *fsg)
+{
+	struct fsg_lun		*curlun = fsg->curlun;
+	u32			lba;
+	u32			verification_length;
+	struct fsg_buffhd	*bh = fsg->next_buffhd_to_fill;
+	loff_t			file_offset, file_offset_tmp;
+	u32			amount_left;
+	unsigned int		amount;
+	ssize_t			nread;
+
+	/* Get the starting Logical Block Address and check that it's
+	 * not too big */
+	lba = get_unaligned_be32(&fsg->cmnd[2]);
+	if (lba >= curlun->num_sectors) {
+		curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+		return -EINVAL;
+	}
+
+	/* We allow DPO (Disable Page Out = don't save data in the
+	 * cache) but we don't implement it. */
+	if ((fsg->cmnd[1] & ~0x10) != 0) {
+		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+		return -EINVAL;
+	}
+
+	verification_length = get_unaligned_be16(&fsg->cmnd[7]);
+	if (unlikely(verification_length == 0))
+		return -EIO;		// No default reply
+
+	/* Prepare to carry out the file verify */
+	amount_left = verification_length << curlun->blkbits;
+	file_offset = ((loff_t) lba) << curlun->blkbits;
+
+	/* Write out all the dirty buffers before invalidating them */
+	fsg_lun_fsync_sub(curlun);
+	if (signal_pending(current))
+		return -EINTR;
+
+	invalidate_sub(curlun);
+	if (signal_pending(current))
+		return -EINTR;
+
+	/* Just try to read the requested blocks */
+	while (amount_left > 0) {
+
+		/* Figure out how much we need to read:
+		 * Try to read the remaining amount, but not more than
+		 * the buffer size.
+		 * And don't try to read past the end of the file.
+		 */
+		amount = min((unsigned int) amount_left, mod_data.buflen);
+		amount = min((loff_t) amount,
+				curlun->file_length - file_offset);
+		if (amount == 0) {
+			curlun->sense_data =
+					SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+			curlun->sense_data_info = file_offset >> curlun->blkbits;
+			curlun->info_valid = 1;
+			break;
+		}
+
+		/* Perform the read */
+		file_offset_tmp = file_offset;
+		nread = vfs_read(curlun->filp,
+				(char __user *) bh->buf,
+				amount, &file_offset_tmp);
+		VLDBG(curlun, "file read %u @ %llu -> %d\n", amount,
+				(unsigned long long) file_offset,
+				(int) nread);
+		if (signal_pending(current))
+			return -EINTR;
+
+		if (nread < 0) {
+			LDBG(curlun, "error in file verify: %d\n",
+					(int) nread);
+			nread = 0;
+		} else if (nread < amount) {
+			LDBG(curlun, "partial file verify: %d/%u\n",
+					(int) nread, amount);
+			nread = round_down(nread, curlun->blksize);
+		}
+		if (nread == 0) {
+			curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
+			curlun->sense_data_info = file_offset >> curlun->blkbits;
+			curlun->info_valid = 1;
+			break;
+		}
+		file_offset += nread;
+		amount_left -= nread;
+	}
+	return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int do_inquiry(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+	u8	*buf = (u8 *) bh->buf;
+
+	static char vendor_id[] = "Linux   ";
+	static char product_disk_id[] = "File-Stor Gadget";
+	static char product_cdrom_id[] = "File-CD Gadget  ";
+
+	if (!fsg->curlun) {		// Unsupported LUNs are okay
+		fsg->bad_lun_okay = 1;
+		memset(buf, 0, 36);
+		buf[0] = 0x7f;		// Unsupported, no device-type
+		buf[4] = 31;		// Additional length
+		return 36;
+	}
+
+	memset(buf, 0, 8);
+	buf[0] = (mod_data.cdrom ? TYPE_ROM : TYPE_DISK);
+	if (mod_data.removable)
+		buf[1] = 0x80;
+	buf[2] = 2;		// ANSI SCSI level 2
+	buf[3] = 2;		// SCSI-2 INQUIRY data format
+	buf[4] = 31;		// Additional length
+				// No special options
+	sprintf(buf + 8, "%-8s%-16s%04x", vendor_id,
+			(mod_data.cdrom ? product_cdrom_id :
+				product_disk_id),
+			mod_data.release);
+	return 36;
+}
+
+
+static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+	u8		*buf = (u8 *) bh->buf;
+	u32		sd, sdinfo;
+	int		valid;
+
+	/*
+	 * From the SCSI-2 spec., section 7.9 (Unit attention condition):
+	 *
+	 * If a REQUEST SENSE command is received from an initiator
+	 * with a pending unit attention condition (before the target
+	 * generates the contingent allegiance condition), then the
+	 * target shall either:
+	 *   a) report any pending sense data and preserve the unit
+	 *	attention condition on the logical unit, or,
+	 *   b) report the unit attention condition, may discard any
+	 *	pending sense data, and clear the unit attention
+	 *	condition on the logical unit for that initiator.
+	 *
+	 * FSG normally uses option a); enable this code to use option b).
+	 */
+#if 0
+	if (curlun && curlun->unit_attention_data != SS_NO_SENSE) {
+		curlun->sense_data = curlun->unit_attention_data;
+		curlun->unit_attention_data = SS_NO_SENSE;
+	}
+#endif
+
+	if (!curlun) {		// Unsupported LUNs are okay
+		fsg->bad_lun_okay = 1;
+		sd = SS_LOGICAL_UNIT_NOT_SUPPORTED;
+		sdinfo = 0;
+		valid = 0;
+	} else {
+		sd = curlun->sense_data;
+		sdinfo = curlun->sense_data_info;
+		valid = curlun->info_valid << 7;
+		curlun->sense_data = SS_NO_SENSE;
+		curlun->sense_data_info = 0;
+		curlun->info_valid = 0;
+	}
+
+	memset(buf, 0, 18);
+	buf[0] = valid | 0x70;			// Valid, current error
+	buf[2] = SK(sd);
+	put_unaligned_be32(sdinfo, &buf[3]);	/* Sense information */
+	buf[7] = 18 - 8;			// Additional sense length
+	buf[12] = ASC(sd);
+	buf[13] = ASCQ(sd);
+	return 18;
+}
+
+
+static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+	u32		lba = get_unaligned_be32(&fsg->cmnd[2]);
+	int		pmi = fsg->cmnd[8];
+	u8		*buf = (u8 *) bh->buf;
+
+	/* Check the PMI and LBA fields */
+	if (pmi > 1 || (pmi == 0 && lba != 0)) {
+		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+		return -EINVAL;
+	}
+
+	put_unaligned_be32(curlun->num_sectors - 1, &buf[0]);
+						/* Max logical block */
+	put_unaligned_be32(curlun->blksize, &buf[4]);	/* Block length */
+	return 8;
+}
+
+
+static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+	int		msf = fsg->cmnd[1] & 0x02;
+	u32		lba = get_unaligned_be32(&fsg->cmnd[2]);
+	u8		*buf = (u8 *) bh->buf;
+
+	if ((fsg->cmnd[1] & ~0x02) != 0) {		/* Mask away MSF */
+		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+		return -EINVAL;
+	}
+	if (lba >= curlun->num_sectors) {
+		curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+		return -EINVAL;
+	}
+
+	memset(buf, 0, 8);
+	buf[0] = 0x01;		/* 2048 bytes of user data, rest is EC */
+	store_cdrom_address(&buf[4], msf, lba);
+	return 8;
+}
+
+
+static int do_read_toc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+	int		msf = fsg->cmnd[1] & 0x02;
+	int		start_track = fsg->cmnd[6];
+	u8		*buf = (u8 *) bh->buf;
+
+	if ((fsg->cmnd[1] & ~0x02) != 0 ||		/* Mask away MSF */
+			start_track > 1) {
+		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+		return -EINVAL;
+	}
+
+	memset(buf, 0, 20);
+	buf[1] = (20-2);		/* TOC data length */
+	buf[2] = 1;			/* First track number */
+	buf[3] = 1;			/* Last track number */
+	buf[5] = 0x16;			/* Data track, copying allowed */
+	buf[6] = 0x01;			/* Only track is number 1 */
+	store_cdrom_address(&buf[8], msf, 0);
+
+	buf[13] = 0x16;			/* Lead-out track is data */
+	buf[14] = 0xAA;			/* Lead-out track number */
+	store_cdrom_address(&buf[16], msf, curlun->num_sectors);
+	return 20;
+}
+
+
+static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+	int		mscmnd = fsg->cmnd[0];
+	u8		*buf = (u8 *) bh->buf;
+	u8		*buf0 = buf;
+	int		pc, page_code;
+	int		changeable_values, all_pages;
+	int		valid_page = 0;
+	int		len, limit;
+
+	if ((fsg->cmnd[1] & ~0x08) != 0) {		// Mask away DBD
+		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+		return -EINVAL;
+	}
+	pc = fsg->cmnd[2] >> 6;
+	page_code = fsg->cmnd[2] & 0x3f;
+	if (pc == 3) {
+		curlun->sense_data = SS_SAVING_PARAMETERS_NOT_SUPPORTED;
+		return -EINVAL;
+	}
+	changeable_values = (pc == 1);
+	all_pages = (page_code == 0x3f);
+
+	/* Write the mode parameter header.  Fixed values are: default
+	 * medium type, no cache control (DPOFUA), and no block descriptors.
+	 * The only variable value is the WriteProtect bit.  We will fill in
+	 * the mode data length later. */
+	memset(buf, 0, 8);
+	if (mscmnd == MODE_SENSE) {
+		buf[2] = (curlun->ro ? 0x80 : 0x00);		// WP, DPOFUA
+		buf += 4;
+		limit = 255;
+	} else {			// MODE_SENSE_10
+		buf[3] = (curlun->ro ? 0x80 : 0x00);		// WP, DPOFUA
+		buf += 8;
+		limit = 65535;		// Should really be mod_data.buflen
+	}
+
+	/* No block descriptors */
+
+	/* The mode pages, in numerical order.  The only page we support
+	 * is the Caching page. */
+	if (page_code == 0x08 || all_pages) {
+		valid_page = 1;
+		buf[0] = 0x08;		// Page code
+		buf[1] = 10;		// Page length
+		memset(buf+2, 0, 10);	// None of the fields are changeable
+
+		if (!changeable_values) {
+			buf[2] = 0x04;	// Write cache enable,
+					// Read cache not disabled
+					// No cache retention priorities
+			put_unaligned_be16(0xffff, &buf[4]);
+					/* Don't disable prefetch */
+					/* Minimum prefetch = 0 */
+			put_unaligned_be16(0xffff, &buf[8]);
+					/* Maximum prefetch */
+			put_unaligned_be16(0xffff, &buf[10]);
+					/* Maximum prefetch ceiling */
+		}
+		buf += 12;
+	}
+
+	/* Check that a valid page was requested and the mode data length
+	 * isn't too long. */
+	len = buf - buf0;
+	if (!valid_page || len > limit) {
+		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+		return -EINVAL;
+	}
+
+	/*  Store the mode data length */
+	if (mscmnd == MODE_SENSE)
+		buf0[0] = len - 1;
+	else
+		put_unaligned_be16(len - 2, buf0);
+	return len;
+}
+
+
+static int do_start_stop(struct fsg_dev *fsg)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+	int		loej, start;
+
+	if (!mod_data.removable) {
+		curlun->sense_data = SS_INVALID_COMMAND;
+		return -EINVAL;
+	}
+
+	// int immed = fsg->cmnd[1] & 0x01;
+	loej = fsg->cmnd[4] & 0x02;
+	start = fsg->cmnd[4] & 0x01;
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+	if ((fsg->cmnd[1] & ~0x01) != 0 ||		// Mask away Immed
+			(fsg->cmnd[4] & ~0x03) != 0) {	// Mask LoEj, Start
+		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+		return -EINVAL;
+	}
+
+	if (!start) {
+
+		/* Are we allowed to unload the media? */
+		if (curlun->prevent_medium_removal) {
+			LDBG(curlun, "unload attempt prevented\n");
+			curlun->sense_data = SS_MEDIUM_REMOVAL_PREVENTED;
+			return -EINVAL;
+		}
+		if (loej) {		// Simulate an unload/eject
+			up_read(&fsg->filesem);
+			down_write(&fsg->filesem);
+			fsg_lun_close(curlun);
+			up_write(&fsg->filesem);
+			down_read(&fsg->filesem);
+		}
+	} else {
+
+		/* Our emulation doesn't support mounting; the medium is
+		 * available for use as soon as it is loaded. */
+		if (!fsg_lun_is_open(curlun)) {
+			curlun->sense_data = SS_MEDIUM_NOT_PRESENT;
+			return -EINVAL;
+		}
+	}
+#endif
+	return 0;
+}
+
+
+static int do_prevent_allow(struct fsg_dev *fsg)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+	int		prevent;
+
+	if (!mod_data.removable) {
+		curlun->sense_data = SS_INVALID_COMMAND;
+		return -EINVAL;
+	}
+
+	prevent = fsg->cmnd[4] & 0x01;
+	if ((fsg->cmnd[4] & ~0x01) != 0) {		// Mask away Prevent
+		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+		return -EINVAL;
+	}
+
+	if (curlun->prevent_medium_removal && !prevent)
+		fsg_lun_fsync_sub(curlun);
+	curlun->prevent_medium_removal = prevent;
+	return 0;
+}
+
+
+static int do_read_format_capacities(struct fsg_dev *fsg,
+			struct fsg_buffhd *bh)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+	u8		*buf = (u8 *) bh->buf;
+
+	buf[0] = buf[1] = buf[2] = 0;
+	buf[3] = 8;		// Only the Current/Maximum Capacity Descriptor
+	buf += 4;
+
+	put_unaligned_be32(curlun->num_sectors, &buf[0]);
+						/* Number of blocks */
+	put_unaligned_be32(curlun->blksize, &buf[4]);	/* Block length */
+	buf[4] = 0x02;				/* Current capacity */
+	return 12;
+}
+
+
+static int do_mode_select(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+	struct fsg_lun	*curlun = fsg->curlun;
+
+	/* We don't support MODE SELECT */
+	curlun->sense_data = SS_INVALID_COMMAND;
+	return -EINVAL;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int halt_bulk_in_endpoint(struct fsg_dev *fsg)
+{
+	int	rc;
+
+	rc = fsg_set_halt(fsg, fsg->bulk_in);
+	if (rc == -EAGAIN)
+		VDBG(fsg, "delayed bulk-in endpoint halt\n");
+	while (rc != 0) {
+		if (rc != -EAGAIN) {
+			WARNING(fsg, "usb_ep_set_halt -> %d\n", rc);
+			rc = 0;
+			break;
+		}
+
+		/* Wait for a short time and then try again */
+		if (msleep_interruptible(100) != 0)
+			return -EINTR;
+		rc = usb_ep_set_halt(fsg->bulk_in);
+	}
+	return rc;
+}
+
+static int wedge_bulk_in_endpoint(struct fsg_dev *fsg)
+{
+	int	rc;
+
+	DBG(fsg, "bulk-in set wedge\n");
+	rc = usb_ep_set_wedge(fsg->bulk_in);
+	if (rc == -EAGAIN)
+		VDBG(fsg, "delayed bulk-in endpoint wedge\n");
+	while (rc != 0) {
+		if (rc != -EAGAIN) {
+			WARNING(fsg, "usb_ep_set_wedge -> %d\n", rc);
+			rc = 0;
+			break;
+		}
+
+		/* Wait for a short time and then try again */
+		if (msleep_interruptible(100) != 0)
+			return -EINTR;
+		rc = usb_ep_set_wedge(fsg->bulk_in);
+	}
+	return rc;
+}
+
+static int throw_away_data(struct fsg_dev *fsg)
+{
+	struct fsg_buffhd	*bh;
+	u32			amount;
+	int			rc;
+
+	while ((bh = fsg->next_buffhd_to_drain)->state != BUF_STATE_EMPTY ||
+			fsg->usb_amount_left > 0) {
+
+		/* Throw away the data in a filled buffer */
+		if (bh->state == BUF_STATE_FULL) {
+			smp_rmb();
+			bh->state = BUF_STATE_EMPTY;
+			fsg->next_buffhd_to_drain = bh->next;
+
+			/* A short packet or an error ends everything */
+			if (bh->outreq->actual < bh->bulk_out_intended_length ||
+					bh->outreq->status != 0) {
+				raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
+				return -EINTR;
+			}
+			continue;
+		}
+
+		/* Try to submit another request if we need one */
+		bh = fsg->next_buffhd_to_fill;
+		if (bh->state == BUF_STATE_EMPTY && fsg->usb_amount_left > 0) {
+			amount = min(fsg->usb_amount_left,
+					(u32) mod_data.buflen);
+
+			/* Except at the end of the transfer, amount will be
+			 * equal to the buffer size, which is divisible by
+			 * the bulk-out maxpacket size.
+			 */
+			set_bulk_out_req_length(fsg, bh, amount);
+			start_transfer(fsg, fsg->bulk_out, bh->outreq,
+					&bh->outreq_busy, &bh->state);
+			fsg->next_buffhd_to_fill = bh->next;
+			fsg->usb_amount_left -= amount;
+			continue;
+		}
+
+		/* Otherwise wait for something to happen */
+		rc = sleep_thread(fsg);
+		if (rc)
+			return rc;
+	}
+	return 0;
+}
+
+
+static int finish_reply(struct fsg_dev *fsg)
+{
+	struct fsg_buffhd	*bh = fsg->next_buffhd_to_fill;
+	int			rc = 0;
+
+	switch (fsg->data_dir) {
+	case DATA_DIR_NONE:
+		break;			// Nothing to send
+
+	/* If we don't know whether the host wants to read or write,
+	 * this must be CB or CBI with an unknown command.  We mustn't
+	 * try to send or receive any data.  So stall both bulk pipes
+	 * if we can and wait for a reset. */
+	case DATA_DIR_UNKNOWN:
+		if (mod_data.can_stall) {
+			fsg_set_halt(fsg, fsg->bulk_out);
+			rc = halt_bulk_in_endpoint(fsg);
+		}
+		break;
+
+	/* All but the last buffer of data must have already been sent */
+	case DATA_DIR_TO_HOST:
+		if (fsg->data_size == 0)
+			;		// Nothing to send
+
+		/* If there's no residue, simply send the last buffer */
+		else if (fsg->residue == 0) {
+			bh->inreq->zero = 0;
+			start_transfer(fsg, fsg->bulk_in, bh->inreq,
+					&bh->inreq_busy, &bh->state);
+			fsg->next_buffhd_to_fill = bh->next;
+		}
+
+		/* There is a residue.  For CB and CBI, simply mark the end
+		 * of the data with a short packet.  However, if we are
+		 * allowed to stall, there was no data at all (residue ==
+		 * data_size), and the command failed (invalid LUN or
+		 * sense data is set), then halt the bulk-in endpoint
+		 * instead. */
+		else if (!transport_is_bbb()) {
+			if (mod_data.can_stall &&
+					fsg->residue == fsg->data_size &&
+	(!fsg->curlun || fsg->curlun->sense_data != SS_NO_SENSE)) {
+				bh->state = BUF_STATE_EMPTY;
+				rc = halt_bulk_in_endpoint(fsg);
+			} else {
+				bh->inreq->zero = 1;
+				start_transfer(fsg, fsg->bulk_in, bh->inreq,
+						&bh->inreq_busy, &bh->state);
+				fsg->next_buffhd_to_fill = bh->next;
+			}
+		}
+
+		/*
+		 * For Bulk-only, mark the end of the data with a short
+		 * packet.  If we are allowed to stall, halt the bulk-in
+		 * endpoint.  (Note: This violates the Bulk-Only Transport
+		 * specification, which requires us to pad the data if we
+		 * don't halt the endpoint.  Presumably nobody will mind.)
+		 */
+		else {
+			bh->inreq->zero = 1;
+			start_transfer(fsg, fsg->bulk_in, bh->inreq,
+					&bh->inreq_busy, &bh->state);
+			fsg->next_buffhd_to_fill = bh->next;
+			if (mod_data.can_stall)
+				rc = halt_bulk_in_endpoint(fsg);
+		}
+		break;
+
+	/* We have processed all we want from the data the host has sent.
+	 * There may still be outstanding bulk-out requests. */
+	case DATA_DIR_FROM_HOST:
+		if (fsg->residue == 0)
+			;		// Nothing to receive
+
+		/* Did the host stop sending unexpectedly early? */
+		else if (fsg->short_packet_received) {
+			raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
+			rc = -EINTR;
+		}
+
+		/* We haven't processed all the incoming data.  Even though
+		 * we may be allowed to stall, doing so would cause a race.
+		 * The controller may already have ACK'ed all the remaining
+		 * bulk-out packets, in which case the host wouldn't see a
+		 * STALL.  Not realizing the endpoint was halted, it wouldn't
+		 * clear the halt -- leading to problems later on. */
+#if 0
+		else if (mod_data.can_stall) {
+			fsg_set_halt(fsg, fsg->bulk_out);
+			raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
+			rc = -EINTR;
+		}
+#endif
+
+		/* We can't stall.  Read in the excess data and throw it
+		 * all away. */
+		else
+			rc = throw_away_data(fsg);
+		break;
+	}
+	return rc;
+}
+
+
+static int send_status(struct fsg_dev *fsg)
+{
+	struct fsg_lun		*curlun = fsg->curlun;
+	struct fsg_buffhd	*bh;
+	int			rc;
+	u8			status = US_BULK_STAT_OK;
+	u32			sd, sdinfo = 0;
+
+	/* Wait for the next buffer to become available */
+	bh = fsg->next_buffhd_to_fill;
+	while (bh->state != BUF_STATE_EMPTY) {
+		rc = sleep_thread(fsg);
+		if (rc)
+			return rc;
+	}
+
+	if (curlun) {
+		sd = curlun->sense_data;
+		sdinfo = curlun->sense_data_info;
+	} else if (fsg->bad_lun_okay)
+		sd = SS_NO_SENSE;
+	else
+		sd = SS_LOGICAL_UNIT_NOT_SUPPORTED;
+
+	if (fsg->phase_error) {
+		DBG(fsg, "sending phase-error status\n");
+		status = US_BULK_STAT_PHASE;
+		sd = SS_INVALID_COMMAND;
+	} else if (sd != SS_NO_SENSE) {
+		DBG(fsg, "sending command-failure status\n");
+		status = US_BULK_STAT_FAIL;
+		VDBG(fsg, "  sense data: SK x%02x, ASC x%02x, ASCQ x%02x;"
+				"  info x%x\n",
+				SK(sd), ASC(sd), ASCQ(sd), sdinfo);
+	}
+
+	if (transport_is_bbb()) {
+		struct bulk_cs_wrap	*csw = bh->buf;
+
+		/* Store and send the Bulk-only CSW */
+		csw->Signature = cpu_to_le32(US_BULK_CS_SIGN);
+		csw->Tag = fsg->tag;
+		csw->Residue = cpu_to_le32(fsg->residue);
+		csw->Status = status;
+
+		bh->inreq->length = US_BULK_CS_WRAP_LEN;
+		bh->inreq->zero = 0;
+		start_transfer(fsg, fsg->bulk_in, bh->inreq,
+				&bh->inreq_busy, &bh->state);
+
+	} else if (mod_data.transport_type == USB_PR_CB) {
+
+		/* Control-Bulk transport has no status phase! */
+		return 0;
+
+	} else {			// USB_PR_CBI
+		struct interrupt_data	*buf = bh->buf;
+
+		/* Store and send the Interrupt data.  UFI sends the ASC
+		 * and ASCQ bytes.  Everything else sends a Type (which
+		 * is always 0) and the status Value. */
+		if (mod_data.protocol_type == USB_SC_UFI) {
+			buf->bType = ASC(sd);
+			buf->bValue = ASCQ(sd);
+		} else {
+			buf->bType = 0;
+			buf->bValue = status;
+		}
+		fsg->intreq->length = CBI_INTERRUPT_DATA_LEN;
+
+		fsg->intr_buffhd = bh;		// Point to the right buffhd
+		fsg->intreq->buf = bh->inreq->buf;
+		fsg->intreq->context = bh;
+		start_transfer(fsg, fsg->intr_in, fsg->intreq,
+				&fsg->intreq_busy, &bh->state);
+	}
+
+	fsg->next_buffhd_to_fill = bh->next;
+	return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* Check whether the command is properly formed and whether its data size
+ * and direction agree with the values we already have. */
+static int check_command(struct fsg_dev *fsg, int cmnd_size,
+		enum data_direction data_dir, unsigned int mask,
+		int needs_medium, const char *name)
+{
+	int			i;
+	int			lun = fsg->cmnd[1] >> 5;
+	static const char	dirletter[4] = {'u', 'o', 'i', 'n'};
+	char			hdlen[20];
+	struct fsg_lun		*curlun;
+
+	/* Adjust the expected cmnd_size for protocol encapsulation padding.
+	 * Transparent SCSI doesn't pad. */
+	if (protocol_is_scsi())
+		;
+
+	/* There's some disagreement as to whether RBC pads commands or not.
+	 * We'll play it safe and accept either form. */
+	else if (mod_data.protocol_type == USB_SC_RBC) {
+		if (fsg->cmnd_size == 12)
+			cmnd_size = 12;
+
+	/* All the other protocols pad to 12 bytes */
+	} else
+		cmnd_size = 12;
+
+	hdlen[0] = 0;
+	if (fsg->data_dir != DATA_DIR_UNKNOWN)
+		sprintf(hdlen, ", H%c=%u", dirletter[(int) fsg->data_dir],
+				fsg->data_size);
+	VDBG(fsg, "SCSI command: %s;  Dc=%d, D%c=%u;  Hc=%d%s\n",
+			name, cmnd_size, dirletter[(int) data_dir],
+			fsg->data_size_from_cmnd, fsg->cmnd_size, hdlen);
+
+	/* We can't reply at all until we know the correct data direction
+	 * and size. */
+	if (fsg->data_size_from_cmnd == 0)
+		data_dir = DATA_DIR_NONE;
+	if (fsg->data_dir == DATA_DIR_UNKNOWN) {	// CB or CBI
+		fsg->data_dir = data_dir;
+		fsg->data_size = fsg->data_size_from_cmnd;
+
+	} else {					// Bulk-only
+		if (fsg->data_size < fsg->data_size_from_cmnd) {
+
+			/* Host data size < Device data size is a phase error.
+			 * Carry out the command, but only transfer as much
+			 * as we are allowed. */
+			fsg->data_size_from_cmnd = fsg->data_size;
+			fsg->phase_error = 1;
+		}
+	}
+	fsg->residue = fsg->usb_amount_left = fsg->data_size;
+
+	/* Conflicting data directions is a phase error */
+	if (fsg->data_dir != data_dir && fsg->data_size_from_cmnd > 0) {
+		fsg->phase_error = 1;
+		return -EINVAL;
+	}
+
+	/* Verify the length of the command itself */
+	if (cmnd_size != fsg->cmnd_size) {
+
+		/* Special case workaround: There are plenty of buggy SCSI
+		 * implementations. Many have issues with cbw->Length
+		 * field passing a wrong command size. For those cases we
+		 * always try to work around the problem by using the length
+		 * sent by the host side provided it is at least as large
+		 * as the correct command length.
+		 * Examples of such cases would be MS-Windows, which issues
+		 * REQUEST SENSE with cbw->Length == 12 where it should
+		 * be 6, and xbox360 issuing INQUIRY, TEST UNIT READY and
+		 * REQUEST SENSE with cbw->Length == 10 where it should
+		 * be 6 as well.
+		 */
+		if (cmnd_size <= fsg->cmnd_size) {
+			DBG(fsg, "%s is buggy! Expected length %d "
+					"but we got %d\n", name,
+					cmnd_size, fsg->cmnd_size);
+			cmnd_size = fsg->cmnd_size;
+		} else {
+			fsg->phase_error = 1;
+			return -EINVAL;
+		}
+	}
+
+	/* Check that the LUN values are consistent */
+	if (transport_is_bbb()) {
+		if (fsg->lun != lun)
+			DBG(fsg, "using LUN %d from CBW, "
+					"not LUN %d from CDB\n",
+					fsg->lun, lun);
+	}
+
+	/* Check the LUN */
+	curlun = fsg->curlun;
+	if (curlun) {
+		if (fsg->cmnd[0] != REQUEST_SENSE) {
+			curlun->sense_data = SS_NO_SENSE;
+			curlun->sense_data_info = 0;
+			curlun->info_valid = 0;
+		}
+	} else {
+		fsg->bad_lun_okay = 0;
+
+		/* INQUIRY and REQUEST SENSE commands are explicitly allowed
+		 * to use unsupported LUNs; all others may not. */
+		if (fsg->cmnd[0] != INQUIRY &&
+				fsg->cmnd[0] != REQUEST_SENSE) {
+			DBG(fsg, "unsupported LUN %d\n", fsg->lun);
+			return -EINVAL;
+		}
+	}
+
+	/* If a unit attention condition exists, only INQUIRY and
+	 * REQUEST SENSE commands are allowed; anything else must fail. */
+	if (curlun && curlun->unit_attention_data != SS_NO_SENSE &&
+			fsg->cmnd[0] != INQUIRY &&
+			fsg->cmnd[0] != REQUEST_SENSE) {
+		curlun->sense_data = curlun->unit_attention_data;
+		curlun->unit_attention_data = SS_NO_SENSE;
+		return -EINVAL;
+	}
+
+	/* Check that only command bytes listed in the mask are non-zero */
+	fsg->cmnd[1] &= 0x1f;			// Mask away the LUN
+	for (i = 1; i < cmnd_size; ++i) {
+		if (fsg->cmnd[i] && !(mask & (1 << i))) {
+			if (curlun)
+				curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+			return -EINVAL;
+		}
+	}
+
+	/* If the medium isn't mounted and the command needs to access
+	 * it, return an error. */
+	if (curlun && !fsg_lun_is_open(curlun) && needs_medium) {
+		curlun->sense_data = SS_MEDIUM_NOT_PRESENT;
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* wrapper of check_command for data size in blocks handling */
+static int check_command_size_in_blocks(struct fsg_dev *fsg, int cmnd_size,
+		enum data_direction data_dir, unsigned int mask,
+		int needs_medium, const char *name)
+{
+	if (fsg->curlun)
+		fsg->data_size_from_cmnd <<= fsg->curlun->blkbits;
+	return check_command(fsg, cmnd_size, data_dir,
+			mask, needs_medium, name);
+}
+
+static int do_scsi_command(struct fsg_dev *fsg)
+{
+	struct fsg_buffhd	*bh;
+	int			rc;
+	int			reply = -EINVAL;
+	int			i;
+	static char		unknown[16];
+
+	dump_cdb(fsg);
+
+	/* Wait for the next buffer to become available for data or status */
+	bh = fsg->next_buffhd_to_drain = fsg->next_buffhd_to_fill;
+	while (bh->state != BUF_STATE_EMPTY) {
+		rc = sleep_thread(fsg);
+		if (rc)
+			return rc;
+	}
+	fsg->phase_error = 0;
+	fsg->short_packet_received = 0;
+
+	down_read(&fsg->filesem);	// We're using the backing file
+	switch (fsg->cmnd[0]) {
+
+	case INQUIRY:
+		fsg->data_size_from_cmnd = fsg->cmnd[4];
+		if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
+				(1<<4), 0,
+				"INQUIRY")) == 0)
+			reply = do_inquiry(fsg, bh);
+		break;
+
+	case MODE_SELECT:
+		fsg->data_size_from_cmnd = fsg->cmnd[4];
+		if ((reply = check_command(fsg, 6, DATA_DIR_FROM_HOST,
+				(1<<1) | (1<<4), 0,
+				"MODE SELECT(6)")) == 0)
+			reply = do_mode_select(fsg, bh);
+		break;
+
+	case MODE_SELECT_10:
+		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+		if ((reply = check_command(fsg, 10, DATA_DIR_FROM_HOST,
+				(1<<1) | (3<<7), 0,
+				"MODE SELECT(10)")) == 0)
+			reply = do_mode_select(fsg, bh);
+		break;
+
+	case MODE_SENSE:
+		fsg->data_size_from_cmnd = fsg->cmnd[4];
+		if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
+				(1<<1) | (1<<2) | (1<<4), 0,
+				"MODE SENSE(6)")) == 0)
+			reply = do_mode_sense(fsg, bh);
+		break;
+
+	case MODE_SENSE_10:
+		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+				(1<<1) | (1<<2) | (3<<7), 0,
+				"MODE SENSE(10)")) == 0)
+			reply = do_mode_sense(fsg, bh);
+		break;
+
+	case ALLOW_MEDIUM_REMOVAL:
+		fsg->data_size_from_cmnd = 0;
+		if ((reply = check_command(fsg, 6, DATA_DIR_NONE,
+				(1<<4), 0,
+				"PREVENT-ALLOW MEDIUM REMOVAL")) == 0)
+			reply = do_prevent_allow(fsg);
+		break;
+
+	case READ_6:
+		i = fsg->cmnd[4];
+		fsg->data_size_from_cmnd = (i == 0) ? 256 : i;
+		if ((reply = check_command_size_in_blocks(fsg, 6,
+				DATA_DIR_TO_HOST,
+				(7<<1) | (1<<4), 1,
+				"READ(6)")) == 0)
+			reply = do_read(fsg);
+		break;
+
+	case READ_10:
+		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+		if ((reply = check_command_size_in_blocks(fsg, 10,
+				DATA_DIR_TO_HOST,
+				(1<<1) | (0xf<<2) | (3<<7), 1,
+				"READ(10)")) == 0)
+			reply = do_read(fsg);
+		break;
+
+	case READ_12:
+		fsg->data_size_from_cmnd = get_unaligned_be32(&fsg->cmnd[6]);
+		if ((reply = check_command_size_in_blocks(fsg, 12,
+				DATA_DIR_TO_HOST,
+				(1<<1) | (0xf<<2) | (0xf<<6), 1,
+				"READ(12)")) == 0)
+			reply = do_read(fsg);
+		break;
+
+	case READ_CAPACITY:
+		fsg->data_size_from_cmnd = 8;
+		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+				(0xf<<2) | (1<<8), 1,
+				"READ CAPACITY")) == 0)
+			reply = do_read_capacity(fsg, bh);
+		break;
+
+	case READ_HEADER:
+		if (!mod_data.cdrom)
+			goto unknown_cmnd;
+		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+				(3<<7) | (0x1f<<1), 1,
+				"READ HEADER")) == 0)
+			reply = do_read_header(fsg, bh);
+		break;
+
+	case READ_TOC:
+		if (!mod_data.cdrom)
+			goto unknown_cmnd;
+		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+				(7<<6) | (1<<1), 1,
+				"READ TOC")) == 0)
+			reply = do_read_toc(fsg, bh);
+		break;
+
+	case READ_FORMAT_CAPACITIES:
+		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+				(3<<7), 1,
+				"READ FORMAT CAPACITIES")) == 0)
+			reply = do_read_format_capacities(fsg, bh);
+		break;
+
+	case REQUEST_SENSE:
+		fsg->data_size_from_cmnd = fsg->cmnd[4];
+		if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
+				(1<<4), 0,
+				"REQUEST SENSE")) == 0)
+			reply = do_request_sense(fsg, bh);
+		break;
+
+	case START_STOP:
+		fsg->data_size_from_cmnd = 0;
+		if ((reply = check_command(fsg, 6, DATA_DIR_NONE,
+				(1<<1) | (1<<4), 0,
+				"START-STOP UNIT")) == 0)
+			reply = do_start_stop(fsg);
+		break;
+
+	case SYNCHRONIZE_CACHE:
+		fsg->data_size_from_cmnd = 0;
+		if ((reply = check_command(fsg, 10, DATA_DIR_NONE,
+				(0xf<<2) | (3<<7), 1,
+				"SYNCHRONIZE CACHE")) == 0)
+			reply = do_synchronize_cache(fsg);
+		break;
+
+	case TEST_UNIT_READY:
+		fsg->data_size_from_cmnd = 0;
+		reply = check_command(fsg, 6, DATA_DIR_NONE,
+				0, 1,
+				"TEST UNIT READY");
+		break;
+
+	/* Although optional, this command is used by MS-Windows.  We
+	 * support a minimal version: BytChk must be 0. */
+	case VERIFY:
+		fsg->data_size_from_cmnd = 0;
+		if ((reply = check_command(fsg, 10, DATA_DIR_NONE,
+				(1<<1) | (0xf<<2) | (3<<7), 1,
+				"VERIFY")) == 0)
+			reply = do_verify(fsg);
+		break;
+
+	case WRITE_6:
+		i = fsg->cmnd[4];
+		fsg->data_size_from_cmnd = (i == 0) ? 256 : i;
+		if ((reply = check_command_size_in_blocks(fsg, 6,
+				DATA_DIR_FROM_HOST,
+				(7<<1) | (1<<4), 1,
+				"WRITE(6)")) == 0)
+			reply = do_write(fsg);
+		break;
+
+	case WRITE_10:
+		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
+		if ((reply = check_command_size_in_blocks(fsg, 10,
+				DATA_DIR_FROM_HOST,
+				(1<<1) | (0xf<<2) | (3<<7), 1,
+				"WRITE(10)")) == 0)
+			reply = do_write(fsg);
+		break;
+
+	case WRITE_12:
+		fsg->data_size_from_cmnd = get_unaligned_be32(&fsg->cmnd[6]);
+		if ((reply = check_command_size_in_blocks(fsg, 12,
+				DATA_DIR_FROM_HOST,
+				(1<<1) | (0xf<<2) | (0xf<<6), 1,
+				"WRITE(12)")) == 0)
+			reply = do_write(fsg);
+		break;
+
+	/* Some mandatory commands that we recognize but don't implement.
+	 * They don't mean much in this setting.  It's left as an exercise
+	 * for anyone interested to implement RESERVE and RELEASE in terms
+	 * of Posix locks. */
+	case FORMAT_UNIT:
+	case RELEASE:
+	case RESERVE:
+	case SEND_DIAGNOSTIC:
+		// Fall through
+
+	default:
+ unknown_cmnd:
+		fsg->data_size_from_cmnd = 0;
+		sprintf(unknown, "Unknown x%02x", fsg->cmnd[0]);
+		if ((reply = check_command(fsg, fsg->cmnd_size,
+				DATA_DIR_UNKNOWN, ~0, 0, unknown)) == 0) {
+			fsg->curlun->sense_data = SS_INVALID_COMMAND;
+			reply = -EINVAL;
+		}
+		break;
+	}
+	up_read(&fsg->filesem);
+
+	if (reply == -EINTR || signal_pending(current))
+		return -EINTR;
+
+	/* Set up the single reply buffer for finish_reply() */
+	if (reply == -EINVAL)
+		reply = 0;		// Error reply length
+	if (reply >= 0 && fsg->data_dir == DATA_DIR_TO_HOST) {
+		reply = min((u32) reply, fsg->data_size_from_cmnd);
+		bh->inreq->length = reply;
+		bh->state = BUF_STATE_FULL;
+		fsg->residue -= reply;
+	}				// Otherwise it's already set
+
+	return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+	struct usb_request		*req = bh->outreq;
+	struct bulk_cb_wrap	*cbw = req->buf;
+
+	/* Was this a real packet?  Should it be ignored? */
+	if (req->status || test_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags))
+		return -EINVAL;
+
+	/* Is the CBW valid? */
+	if (req->actual != US_BULK_CB_WRAP_LEN ||
+			cbw->Signature != cpu_to_le32(
+				US_BULK_CB_SIGN)) {
+		DBG(fsg, "invalid CBW: len %u sig 0x%x\n",
+				req->actual,
+				le32_to_cpu(cbw->Signature));
+
+		/* The Bulk-only spec says we MUST stall the IN endpoint
+		 * (6.6.1), so it's unavoidable.  It also says we must
+		 * retain this state until the next reset, but there's
+		 * no way to tell the controller driver it should ignore
+		 * Clear-Feature(HALT) requests.
+		 *
+		 * We aren't required to halt the OUT endpoint; instead
+		 * we can simply accept and discard any data received
+		 * until the next reset. */
+		wedge_bulk_in_endpoint(fsg);
+		set_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
+		return -EINVAL;
+	}
+
+	/* Is the CBW meaningful? */
+	if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~US_BULK_FLAG_IN ||
+			cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) {
+		DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, "
+				"cmdlen %u\n",
+				cbw->Lun, cbw->Flags, cbw->Length);
+
+		/* We can do anything we want here, so let's stall the
+		 * bulk pipes if we are allowed to. */
+		if (mod_data.can_stall) {
+			fsg_set_halt(fsg, fsg->bulk_out);
+			halt_bulk_in_endpoint(fsg);
+		}
+		return -EINVAL;
+	}
+
+	/* Save the command for later */
+	fsg->cmnd_size = cbw->Length;
+	memcpy(fsg->cmnd, cbw->CDB, fsg->cmnd_size);
+	if (cbw->Flags & US_BULK_FLAG_IN)
+		fsg->data_dir = DATA_DIR_TO_HOST;
+	else
+		fsg->data_dir = DATA_DIR_FROM_HOST;
+	fsg->data_size = le32_to_cpu(cbw->DataTransferLength);
+	if (fsg->data_size == 0)
+		fsg->data_dir = DATA_DIR_NONE;
+	fsg->lun = cbw->Lun;
+	fsg->tag = cbw->Tag;
+	return 0;
+}
+
+
+static int get_next_command(struct fsg_dev *fsg)
+{
+	struct fsg_buffhd	*bh;
+	int			rc = 0;
+
+	if (transport_is_bbb()) {
+
+		/* Wait for the next buffer to become available */
+		bh = fsg->next_buffhd_to_fill;
+		while (bh->state != BUF_STATE_EMPTY) {
+			rc = sleep_thread(fsg);
+			if (rc)
+				return rc;
+		}
+
+		/* Queue a request to read a Bulk-only CBW */
+		set_bulk_out_req_length(fsg, bh, US_BULK_CB_WRAP_LEN);
+		start_transfer(fsg, fsg->bulk_out, bh->outreq,
+				&bh->outreq_busy, &bh->state);
+
+		/* We will drain the buffer in software, which means we
+		 * can reuse it for the next filling.  No need to advance
+		 * next_buffhd_to_fill. */
+
+		/* Wait for the CBW to arrive */
+		while (bh->state != BUF_STATE_FULL) {
+			rc = sleep_thread(fsg);
+			if (rc)
+				return rc;
+		}
+		smp_rmb();
+		rc = received_cbw(fsg, bh);
+		bh->state = BUF_STATE_EMPTY;
+
+	} else {		// USB_PR_CB or USB_PR_CBI
+
+		/* Wait for the next command to arrive */
+		while (fsg->cbbuf_cmnd_size == 0) {
+			rc = sleep_thread(fsg);
+			if (rc)
+				return rc;
+		}
+
+		/* Is the previous status interrupt request still busy?
+		 * The host is allowed to skip reading the status,
+		 * so we must cancel it. */
+		if (fsg->intreq_busy)
+			usb_ep_dequeue(fsg->intr_in, fsg->intreq);
+
+		/* Copy the command and mark the buffer empty */
+		fsg->data_dir = DATA_DIR_UNKNOWN;
+		spin_lock_irq(&fsg->lock);
+		fsg->cmnd_size = fsg->cbbuf_cmnd_size;
+		memcpy(fsg->cmnd, fsg->cbbuf_cmnd, fsg->cmnd_size);
+		fsg->cbbuf_cmnd_size = 0;
+		spin_unlock_irq(&fsg->lock);
+
+		/* Use LUN from the command */
+		fsg->lun = fsg->cmnd[1] >> 5;
+	}
+
+	/* Update current lun */
+	if (fsg->lun >= 0 && fsg->lun < fsg->nluns)
+		fsg->curlun = &fsg->luns[fsg->lun];
+	else
+		fsg->curlun = NULL;
+
+	return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int enable_endpoint(struct fsg_dev *fsg, struct usb_ep *ep,
+		const struct usb_endpoint_descriptor *d)
+{
+	int	rc;
+
+	ep->driver_data = fsg;
+	ep->desc = d;
+	rc = usb_ep_enable(ep);
+	if (rc)
+		ERROR(fsg, "can't enable %s, result %d\n", ep->name, rc);
+	return rc;
+}
+
+static int alloc_request(struct fsg_dev *fsg, struct usb_ep *ep,
+		struct usb_request **preq)
+{
+	*preq = usb_ep_alloc_request(ep, GFP_ATOMIC);
+	if (*preq)
+		return 0;
+	ERROR(fsg, "can't allocate request for %s\n", ep->name);
+	return -ENOMEM;
+}
+
+/*
+ * Reset interface setting and re-init endpoint state (toggle etc).
+ * Call with altsetting < 0 to disable the interface.  The only other
+ * available altsetting is 0, which enables the interface.
+ */
+static int do_set_interface(struct fsg_dev *fsg, int altsetting)
+{
+	int	rc = 0;
+	int	i;
+	const struct usb_endpoint_descriptor	*d;
+
+	if (fsg->running)
+		DBG(fsg, "reset interface\n");
+
+reset:
+	/* Deallocate the requests */
+	for (i = 0; i < fsg_num_buffers; ++i) {
+		struct fsg_buffhd *bh = &fsg->buffhds[i];
+
+		if (bh->inreq) {
+			usb_ep_free_request(fsg->bulk_in, bh->inreq);
+			bh->inreq = NULL;
+		}
+		if (bh->outreq) {
+			usb_ep_free_request(fsg->bulk_out, bh->outreq);
+			bh->outreq = NULL;
+		}
+	}
+	if (fsg->intreq) {
+		usb_ep_free_request(fsg->intr_in, fsg->intreq);
+		fsg->intreq = NULL;
+	}
+
+	/* Disable the endpoints */
+	if (fsg->bulk_in_enabled) {
+		usb_ep_disable(fsg->bulk_in);
+		fsg->bulk_in_enabled = 0;
+	}
+	if (fsg->bulk_out_enabled) {
+		usb_ep_disable(fsg->bulk_out);
+		fsg->bulk_out_enabled = 0;
+	}
+	if (fsg->intr_in_enabled) {
+		usb_ep_disable(fsg->intr_in);
+		fsg->intr_in_enabled = 0;
+	}
+
+	fsg->running = 0;
+	if (altsetting < 0 || rc != 0)
+		return rc;
+
+	DBG(fsg, "set interface %d\n", altsetting);
+
+	/* Enable the endpoints */
+	d = fsg_ep_desc(fsg->gadget,
+			&fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc,
+			&fsg_ss_bulk_in_desc);
+	if ((rc = enable_endpoint(fsg, fsg->bulk_in, d)) != 0)
+		goto reset;
+	fsg->bulk_in_enabled = 1;
+
+	d = fsg_ep_desc(fsg->gadget,
+			&fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc,
+			&fsg_ss_bulk_out_desc);
+	if ((rc = enable_endpoint(fsg, fsg->bulk_out, d)) != 0)
+		goto reset;
+	fsg->bulk_out_enabled = 1;
+	fsg->bulk_out_maxpacket = usb_endpoint_maxp(d);
+	clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
+
+	if (transport_is_cbi()) {
+		d = fsg_ep_desc(fsg->gadget,
+				&fsg_fs_intr_in_desc, &fsg_hs_intr_in_desc,
+				&fsg_ss_intr_in_desc);
+		if ((rc = enable_endpoint(fsg, fsg->intr_in, d)) != 0)
+			goto reset;
+		fsg->intr_in_enabled = 1;
+	}
+
+	/* Allocate the requests */
+	for (i = 0; i < fsg_num_buffers; ++i) {
+		struct fsg_buffhd	*bh = &fsg->buffhds[i];
+
+		if ((rc = alloc_request(fsg, fsg->bulk_in, &bh->inreq)) != 0)
+			goto reset;
+		if ((rc = alloc_request(fsg, fsg->bulk_out, &bh->outreq)) != 0)
+			goto reset;
+		bh->inreq->buf = bh->outreq->buf = bh->buf;
+		bh->inreq->context = bh->outreq->context = bh;
+		bh->inreq->complete = bulk_in_complete;
+		bh->outreq->complete = bulk_out_complete;
+	}
+	if (transport_is_cbi()) {
+		if ((rc = alloc_request(fsg, fsg->intr_in, &fsg->intreq)) != 0)
+			goto reset;
+		fsg->intreq->complete = intr_in_complete;
+	}
+
+	fsg->running = 1;
+	for (i = 0; i < fsg->nluns; ++i)
+		fsg->luns[i].unit_attention_data = SS_RESET_OCCURRED;
+	return rc;
+}
+
+
+/*
+ * Change our operational configuration.  This code must agree with the code
+ * that returns config descriptors, and with interface altsetting code.
+ *
+ * It's also responsible for power management interactions.  Some
+ * configurations might not work with our current power sources.
+ * For now we just assume the gadget is always self-powered.
+ */
+static int do_set_config(struct fsg_dev *fsg, u8 new_config)
+{
+	int	rc = 0;
+
+	/* Disable the single interface */
+	if (fsg->config != 0) {
+		DBG(fsg, "reset config\n");
+		fsg->config = 0;
+		rc = do_set_interface(fsg, -1);
+	}
+
+	/* Enable the interface */
+	if (new_config != 0) {
+		fsg->config = new_config;
+		if ((rc = do_set_interface(fsg, 0)) != 0)
+			fsg->config = 0;	// Reset on errors
+		else
+			INFO(fsg, "%s config #%d\n",
+			     usb_speed_string(fsg->gadget->speed),
+			     fsg->config);
+	}
+	return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static void handle_exception(struct fsg_dev *fsg)
+{
+	siginfo_t		info;
+	int			sig;
+	int			i;
+	int			num_active;
+	struct fsg_buffhd	*bh;
+	enum fsg_state		old_state;
+	u8			new_config;
+	struct fsg_lun		*curlun;
+	unsigned int		exception_req_tag;
+	int			rc;
+
+	/* Clear the existing signals.  Anything but SIGUSR1 is converted
+	 * into a high-priority EXIT exception. */
+	for (;;) {
+		sig = dequeue_signal_lock(current, &current->blocked, &info);
+		if (!sig)
+			break;
+		if (sig != SIGUSR1) {
+			if (fsg->state < FSG_STATE_EXIT)
+				DBG(fsg, "Main thread exiting on signal\n");
+			raise_exception(fsg, FSG_STATE_EXIT);
+		}
+	}
+
+	/* Cancel all the pending transfers */
+	if (fsg->intreq_busy)
+		usb_ep_dequeue(fsg->intr_in, fsg->intreq);
+	for (i = 0; i < fsg_num_buffers; ++i) {
+		bh = &fsg->buffhds[i];
+		if (bh->inreq_busy)
+			usb_ep_dequeue(fsg->bulk_in, bh->inreq);
+		if (bh->outreq_busy)
+			usb_ep_dequeue(fsg->bulk_out, bh->outreq);
+	}
+
+	/* Wait until everything is idle */
+	for (;;) {
+		num_active = fsg->intreq_busy;
+		for (i = 0; i < fsg_num_buffers; ++i) {
+			bh = &fsg->buffhds[i];
+			num_active += bh->inreq_busy + bh->outreq_busy;
+		}
+		if (num_active == 0)
+			break;
+		if (sleep_thread(fsg))
+			return;
+	}
+
+	/* Clear out the controller's fifos */
+	if (fsg->bulk_in_enabled)
+		usb_ep_fifo_flush(fsg->bulk_in);
+	if (fsg->bulk_out_enabled)
+		usb_ep_fifo_flush(fsg->bulk_out);
+	if (fsg->intr_in_enabled)
+		usb_ep_fifo_flush(fsg->intr_in);
+
+	/* Reset the I/O buffer states and pointers, the SCSI
+	 * state, and the exception.  Then invoke the handler. */
+	spin_lock_irq(&fsg->lock);
+
+	for (i = 0; i < fsg_num_buffers; ++i) {
+		bh = &fsg->buffhds[i];
+		bh->state = BUF_STATE_EMPTY;
+	}
+	fsg->next_buffhd_to_fill = fsg->next_buffhd_to_drain =
+			&fsg->buffhds[0];
+
+	exception_req_tag = fsg->exception_req_tag;
+	new_config = fsg->new_config;
+	old_state = fsg->state;
+
+	if (old_state == FSG_STATE_ABORT_BULK_OUT)
+		fsg->state = FSG_STATE_STATUS_PHASE;
+	else {
+		for (i = 0; i < fsg->nluns; ++i) {
+			curlun = &fsg->luns[i];
+			curlun->prevent_medium_removal = 0;
+			curlun->sense_data = curlun->unit_attention_data =
+					SS_NO_SENSE;
+			curlun->sense_data_info = 0;
+			curlun->info_valid = 0;
+		}
+		fsg->state = FSG_STATE_IDLE;
+	}
+	spin_unlock_irq(&fsg->lock);
+
+	/* Carry out any extra actions required for the exception */
+	switch (old_state) {
+	default:
+		break;
+
+	case FSG_STATE_ABORT_BULK_OUT:
+		send_status(fsg);
+		spin_lock_irq(&fsg->lock);
+		if (fsg->state == FSG_STATE_STATUS_PHASE)
+			fsg->state = FSG_STATE_IDLE;
+		spin_unlock_irq(&fsg->lock);
+		break;
+
+	case FSG_STATE_RESET:
+		/* In case we were forced against our will to halt a
+		 * bulk endpoint, clear the halt now.  (The SuperH UDC
+		 * requires this.) */
+		if (test_and_clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags))
+			usb_ep_clear_halt(fsg->bulk_in);
+
+		if (transport_is_bbb()) {
+			if (fsg->ep0_req_tag == exception_req_tag)
+				ep0_queue(fsg);	// Complete the status stage
+
+		} else if (transport_is_cbi())
+			send_status(fsg);	// Status by interrupt pipe
+
+		/* Technically this should go here, but it would only be
+		 * a waste of time.  Ditto for the INTERFACE_CHANGE and
+		 * CONFIG_CHANGE cases. */
+		// for (i = 0; i < fsg->nluns; ++i)
+		//	fsg->luns[i].unit_attention_data = SS_RESET_OCCURRED;
+		break;
+
+	case FSG_STATE_INTERFACE_CHANGE:
+		rc = do_set_interface(fsg, 0);
+		if (fsg->ep0_req_tag != exception_req_tag)
+			break;
+		if (rc != 0)			// STALL on errors
+			fsg_set_halt(fsg, fsg->ep0);
+		else				// Complete the status stage
+			ep0_queue(fsg);
+		break;
+
+	case FSG_STATE_CONFIG_CHANGE:
+		rc = do_set_config(fsg, new_config);
+		if (fsg->ep0_req_tag != exception_req_tag)
+			break;
+		if (rc != 0)			// STALL on errors
+			fsg_set_halt(fsg, fsg->ep0);
+		else				// Complete the status stage
+			ep0_queue(fsg);
+		break;
+
+	case FSG_STATE_DISCONNECT:
+		for (i = 0; i < fsg->nluns; ++i)
+			fsg_lun_fsync_sub(fsg->luns + i);
+		do_set_config(fsg, 0);		// Unconfigured state
+		break;
+
+	case FSG_STATE_EXIT:
+	case FSG_STATE_TERMINATED:
+		do_set_config(fsg, 0);			// Free resources
+		spin_lock_irq(&fsg->lock);
+		fsg->state = FSG_STATE_TERMINATED;	// Stop the thread
+		spin_unlock_irq(&fsg->lock);
+		break;
+	}
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int fsg_main_thread(void *fsg_)
+{
+	struct fsg_dev		*fsg = fsg_;
+
+	/* Allow the thread to be killed by a signal, but set the signal mask
+	 * to block everything but INT, TERM, KILL, and USR1. */
+	allow_signal(SIGINT);
+	allow_signal(SIGTERM);
+	allow_signal(SIGKILL);
+	allow_signal(SIGUSR1);
+
+	/* Allow the thread to be frozen */
+	set_freezable();
+
+	/* Arrange for userspace references to be interpreted as kernel
+	 * pointers.  That way we can pass a kernel pointer to a routine
+	 * that expects a __user pointer and it will work okay. */
+	set_fs(get_ds());
+
+	/* The main loop */
+	while (fsg->state != FSG_STATE_TERMINATED) {
+		if (exception_in_progress(fsg) || signal_pending(current)) {
+			handle_exception(fsg);
+			continue;
+		}
+
+		if (!fsg->running) {
+			sleep_thread(fsg);
+			continue;
+		}
+
+		if (get_next_command(fsg))
+			continue;
+
+		spin_lock_irq(&fsg->lock);
+		if (!exception_in_progress(fsg))
+			fsg->state = FSG_STATE_DATA_PHASE;
+		spin_unlock_irq(&fsg->lock);
+
+		if (do_scsi_command(fsg) || finish_reply(fsg))
+			continue;
+
+		spin_lock_irq(&fsg->lock);
+		if (!exception_in_progress(fsg))
+			fsg->state = FSG_STATE_STATUS_PHASE;
+		spin_unlock_irq(&fsg->lock);
+
+		if (send_status(fsg))
+			continue;
+
+		spin_lock_irq(&fsg->lock);
+		if (!exception_in_progress(fsg))
+			fsg->state = FSG_STATE_IDLE;
+		spin_unlock_irq(&fsg->lock);
+		}
+
+	spin_lock_irq(&fsg->lock);
+	fsg->thread_task = NULL;
+	spin_unlock_irq(&fsg->lock);
+
+	/* If we are exiting because of a signal, unregister the
+	 * gadget driver. */
+	if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags))
+		usb_gadget_unregister_driver(&fsg_driver);
+
+	/* Let the unbind and cleanup routines know the thread has exited */
+	complete_and_exit(&fsg->thread_notifier, 0);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+
+/* The write permissions and store_xxx pointers are set in fsg_bind() */
+static DEVICE_ATTR(ro, 0444, fsg_show_ro, NULL);
+static DEVICE_ATTR(nofua, 0644, fsg_show_nofua, NULL);
+static DEVICE_ATTR(file, 0444, fsg_show_file, NULL);
+
+
+/*-------------------------------------------------------------------------*/
+
+static void fsg_release(struct kref *ref)
+{
+	struct fsg_dev	*fsg = container_of(ref, struct fsg_dev, ref);
+
+	kfree(fsg->luns);
+	kfree(fsg);
+}
+
+static void lun_release(struct device *dev)
+{
+	struct rw_semaphore	*filesem = dev_get_drvdata(dev);
+	struct fsg_dev		*fsg =
+		container_of(filesem, struct fsg_dev, filesem);
+
+	kref_put(&fsg->ref, fsg_release);
+}
+
+static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
+{
+	struct fsg_dev		*fsg = get_gadget_data(gadget);
+	int			i;
+	struct fsg_lun		*curlun;
+	struct usb_request	*req = fsg->ep0req;
+
+	DBG(fsg, "unbind\n");
+	clear_bit(REGISTERED, &fsg->atomic_bitflags);
+
+	/* If the thread isn't already dead, tell it to exit now */
+	if (fsg->state != FSG_STATE_TERMINATED) {
+		raise_exception(fsg, FSG_STATE_EXIT);
+		wait_for_completion(&fsg->thread_notifier);
+
+		/* The cleanup routine waits for this completion also */
+		complete(&fsg->thread_notifier);
+	}
+
+	/* Unregister the sysfs attribute files and the LUNs */
+	for (i = 0; i < fsg->nluns; ++i) {
+		curlun = &fsg->luns[i];
+		if (curlun->registered) {
+			device_remove_file(&curlun->dev, &dev_attr_nofua);
+			device_remove_file(&curlun->dev, &dev_attr_ro);
+			device_remove_file(&curlun->dev, &dev_attr_file);
+			fsg_lun_close(curlun);
+			device_unregister(&curlun->dev);
+			curlun->registered = 0;
+		}
+	}
+
+	/* Free the data buffers */
+	for (i = 0; i < fsg_num_buffers; ++i)
+		kfree(fsg->buffhds[i].buf);
+
+	/* Free the request and buffer for endpoint 0 */
+	if (req) {
+		kfree(req->buf);
+		usb_ep_free_request(fsg->ep0, req);
+	}
+
+	set_gadget_data(gadget, NULL);
+}
+
+
+static int __init check_parameters(struct fsg_dev *fsg)
+{
+	int	prot;
+	int	gcnum;
+
+	/* Store the default values */
+	mod_data.transport_type = USB_PR_BULK;
+	mod_data.transport_name = "Bulk-only";
+	mod_data.protocol_type = USB_SC_SCSI;
+	mod_data.protocol_name = "Transparent SCSI";
+
+	/* Some peripheral controllers are known not to be able to
+	 * halt bulk endpoints correctly.  If one of them is present,
+	 * disable stalls.
+	 */
+	if (gadget_is_at91(fsg->gadget))
+		mod_data.can_stall = 0;
+
+	if (mod_data.release == 0xffff) {	// Parameter wasn't set
+		gcnum = usb_gadget_controller_number(fsg->gadget);
+		if (gcnum >= 0)
+			mod_data.release = 0x0300 + gcnum;
+		else {
+			WARNING(fsg, "controller '%s' not recognized\n",
+				fsg->gadget->name);
+			mod_data.release = 0x0399;
+		}
+	}
+
+	prot = simple_strtol(mod_data.protocol_parm, NULL, 0);
+
+#ifdef CONFIG_USB_FILE_STORAGE_TEST
+	if (strnicmp(mod_data.transport_parm, "BBB", 10) == 0) {
+		;		// Use default setting
+	} else if (strnicmp(mod_data.transport_parm, "CB", 10) == 0) {
+		mod_data.transport_type = USB_PR_CB;
+		mod_data.transport_name = "Control-Bulk";
+	} else if (strnicmp(mod_data.transport_parm, "CBI", 10) == 0) {
+		mod_data.transport_type = USB_PR_CBI;
+		mod_data.transport_name = "Control-Bulk-Interrupt";
+	} else {
+		ERROR(fsg, "invalid transport: %s\n", mod_data.transport_parm);
+		return -EINVAL;
+	}
+
+	if (strnicmp(mod_data.protocol_parm, "SCSI", 10) == 0 ||
+			prot == USB_SC_SCSI) {
+		;		// Use default setting
+	} else if (strnicmp(mod_data.protocol_parm, "RBC", 10) == 0 ||
+			prot == USB_SC_RBC) {
+		mod_data.protocol_type = USB_SC_RBC;
+		mod_data.protocol_name = "RBC";
+	} else if (strnicmp(mod_data.protocol_parm, "8020", 4) == 0 ||
+			strnicmp(mod_data.protocol_parm, "ATAPI", 10) == 0 ||
+			prot == USB_SC_8020) {
+		mod_data.protocol_type = USB_SC_8020;
+		mod_data.protocol_name = "8020i (ATAPI)";
+	} else if (strnicmp(mod_data.protocol_parm, "QIC", 3) == 0 ||
+			prot == USB_SC_QIC) {
+		mod_data.protocol_type = USB_SC_QIC;
+		mod_data.protocol_name = "QIC-157";
+	} else if (strnicmp(mod_data.protocol_parm, "UFI", 10) == 0 ||
+			prot == USB_SC_UFI) {
+		mod_data.protocol_type = USB_SC_UFI;
+		mod_data.protocol_name = "UFI";
+	} else if (strnicmp(mod_data.protocol_parm, "8070", 4) == 0 ||
+			prot == USB_SC_8070) {
+		mod_data.protocol_type = USB_SC_8070;
+		mod_data.protocol_name = "8070i";
+	} else {
+		ERROR(fsg, "invalid protocol: %s\n", mod_data.protocol_parm);
+		return -EINVAL;
+	}
+
+	mod_data.buflen &= PAGE_CACHE_MASK;
+	if (mod_data.buflen <= 0) {
+		ERROR(fsg, "invalid buflen\n");
+		return -ETOOSMALL;
+	}
+
+#endif /* CONFIG_USB_FILE_STORAGE_TEST */
+
+	/* Serial string handling.
+	 * On a real device, the serial string would be loaded
+	 * from permanent storage. */
+	if (mod_data.serial) {
+		const char *ch;
+		unsigned len = 0;
+
+		/* Sanity check :
+		 * The CB[I] specification limits the serial string to
+		 * 12 uppercase hexadecimal characters.
+		 * BBB need at least 12 uppercase hexadecimal characters,
+		 * with a maximum of 126. */
+		for (ch = mod_data.serial; *ch; ++ch) {
+			++len;
+			if ((*ch < '0' || *ch > '9') &&
+			    (*ch < 'A' || *ch > 'F')) { /* not uppercase hex */
+				WARNING(fsg,
+					"Invalid serial string character: %c\n",
+					*ch);
+				goto no_serial;
+			}
+		}
+		if (len > 126 ||
+		    (mod_data.transport_type == USB_PR_BULK && len < 12) ||
+		    (mod_data.transport_type != USB_PR_BULK && len > 12)) {
+			WARNING(fsg, "Invalid serial string length!\n");
+			goto no_serial;
+		}
+		fsg_strings[FSG_STRING_SERIAL - 1].s = mod_data.serial;
+	} else {
+		WARNING(fsg, "No serial-number string provided!\n");
+ no_serial:
+		device_desc.iSerialNumber = 0;
+	}
+
+	return 0;
+}
+
+
+static int __init fsg_bind(struct usb_gadget *gadget)
+{
+	struct fsg_dev		*fsg = the_fsg;
+	int			rc;
+	int			i;
+	struct fsg_lun		*curlun;
+	struct usb_ep		*ep;
+	struct usb_request	*req;
+	char			*pathbuf, *p;
+
+	fsg->gadget = gadget;
+	set_gadget_data(gadget, fsg);
+	fsg->ep0 = gadget->ep0;
+	fsg->ep0->driver_data = fsg;
+
+	if ((rc = check_parameters(fsg)) != 0)
+		goto out;
+
+	if (mod_data.removable) {	// Enable the store_xxx attributes
+		dev_attr_file.attr.mode = 0644;
+		dev_attr_file.store = fsg_store_file;
+		if (!mod_data.cdrom) {
+			dev_attr_ro.attr.mode = 0644;
+			dev_attr_ro.store = fsg_store_ro;
+		}
+	}
+
+	/* Only for removable media? */
+	dev_attr_nofua.attr.mode = 0644;
+	dev_attr_nofua.store = fsg_store_nofua;
+
+	/* Find out how many LUNs there should be */
+	i = mod_data.nluns;
+	if (i == 0)
+		i = max(mod_data.num_filenames, 1u);
+	if (i > FSG_MAX_LUNS) {
+		ERROR(fsg, "invalid number of LUNs: %d\n", i);
+		rc = -EINVAL;
+		goto out;
+	}
+
+	/* Create the LUNs, open their backing files, and register the
+	 * LUN devices in sysfs. */
+	fsg->luns = kzalloc(i * sizeof(struct fsg_lun), GFP_KERNEL);
+	if (!fsg->luns) {
+		rc = -ENOMEM;
+		goto out;
+	}
+	fsg->nluns = i;
+
+	for (i = 0; i < fsg->nluns; ++i) {
+		curlun = &fsg->luns[i];
+		curlun->cdrom = !!mod_data.cdrom;
+		curlun->ro = mod_data.cdrom || mod_data.ro[i];
+		curlun->initially_ro = curlun->ro;
+		curlun->removable = mod_data.removable;
+		curlun->nofua = mod_data.nofua[i];
+		curlun->dev.release = lun_release;
+		curlun->dev.parent = &gadget->dev;
+		curlun->dev.driver = &fsg_driver.driver;
+		dev_set_drvdata(&curlun->dev, &fsg->filesem);
+		dev_set_name(&curlun->dev,"%s-lun%d",
+			     dev_name(&gadget->dev), i);
+
+		kref_get(&fsg->ref);
+		rc = device_register(&curlun->dev);
+		if (rc) {
+			INFO(fsg, "failed to register LUN%d: %d\n", i, rc);
+			put_device(&curlun->dev);
+			goto out;
+		}
+		curlun->registered = 1;
+
+		rc = device_create_file(&curlun->dev, &dev_attr_ro);
+		if (rc)
+			goto out;
+		rc = device_create_file(&curlun->dev, &dev_attr_nofua);
+		if (rc)
+			goto out;
+		rc = device_create_file(&curlun->dev, &dev_attr_file);
+		if (rc)
+			goto out;
+
+		if (mod_data.file[i] && *mod_data.file[i]) {
+			rc = fsg_lun_open(curlun, mod_data.file[i]);
+			if (rc)
+				goto out;
+		} else if (!mod_data.removable) {
+			ERROR(fsg, "no file given for LUN%d\n", i);
+			rc = -EINVAL;
+			goto out;
+		}
+	}
+
+	/* Find all the endpoints we will use */
+	usb_ep_autoconfig_reset(gadget);
+	ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_in_desc);
+	if (!ep)
+		goto autoconf_fail;
+	ep->driver_data = fsg;		// claim the endpoint
+	fsg->bulk_in = ep;
+
+	ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_out_desc);
+	if (!ep)
+		goto autoconf_fail;
+	ep->driver_data = fsg;		// claim the endpoint
+	fsg->bulk_out = ep;
+
+	if (transport_is_cbi()) {
+		ep = usb_ep_autoconfig(gadget, &fsg_fs_intr_in_desc);
+		if (!ep)
+			goto autoconf_fail;
+		ep->driver_data = fsg;		// claim the endpoint
+		fsg->intr_in = ep;
+	}
+
+	/* Fix up the descriptors */
+	device_desc.idVendor = cpu_to_le16(mod_data.vendor);
+	device_desc.idProduct = cpu_to_le16(mod_data.product);
+	device_desc.bcdDevice = cpu_to_le16(mod_data.release);
+
+	i = (transport_is_cbi() ? 3 : 2);	// Number of endpoints
+	fsg_intf_desc.bNumEndpoints = i;
+	fsg_intf_desc.bInterfaceSubClass = mod_data.protocol_type;
+	fsg_intf_desc.bInterfaceProtocol = mod_data.transport_type;
+	fsg_fs_function[i + FSG_FS_FUNCTION_PRE_EP_ENTRIES] = NULL;
+
+	if (gadget_is_dualspeed(gadget)) {
+		fsg_hs_function[i + FSG_HS_FUNCTION_PRE_EP_ENTRIES] = NULL;
+
+		/* Assume endpoint addresses are the same for both speeds */
+		fsg_hs_bulk_in_desc.bEndpointAddress =
+			fsg_fs_bulk_in_desc.bEndpointAddress;
+		fsg_hs_bulk_out_desc.bEndpointAddress =
+			fsg_fs_bulk_out_desc.bEndpointAddress;
+		fsg_hs_intr_in_desc.bEndpointAddress =
+			fsg_fs_intr_in_desc.bEndpointAddress;
+	}
+
+	if (gadget_is_superspeed(gadget)) {
+		unsigned		max_burst;
+
+		fsg_ss_function[i + FSG_SS_FUNCTION_PRE_EP_ENTRIES] = NULL;
+
+		/* Calculate bMaxBurst, we know packet size is 1024 */
+		max_burst = min_t(unsigned, mod_data.buflen / 1024, 15);
+
+		/* Assume endpoint addresses are the same for both speeds */
+		fsg_ss_bulk_in_desc.bEndpointAddress =
+			fsg_fs_bulk_in_desc.bEndpointAddress;
+		fsg_ss_bulk_in_comp_desc.bMaxBurst = max_burst;
+
+		fsg_ss_bulk_out_desc.bEndpointAddress =
+			fsg_fs_bulk_out_desc.bEndpointAddress;
+		fsg_ss_bulk_out_comp_desc.bMaxBurst = max_burst;
+	}
+
+	if (gadget_is_otg(gadget))
+		fsg_otg_desc.bmAttributes |= USB_OTG_HNP;
+
+	rc = -ENOMEM;
+
+	/* Allocate the request and buffer for endpoint 0 */
+	fsg->ep0req = req = usb_ep_alloc_request(fsg->ep0, GFP_KERNEL);
+	if (!req)
+		goto out;
+	req->buf = kmalloc(EP0_BUFSIZE, GFP_KERNEL);
+	if (!req->buf)
+		goto out;
+	req->complete = ep0_complete;
+
+	/* Allocate the data buffers */
+	for (i = 0; i < fsg_num_buffers; ++i) {
+		struct fsg_buffhd	*bh = &fsg->buffhds[i];
+
+		/* Allocate for the bulk-in endpoint.  We assume that
+		 * the buffer will also work with the bulk-out (and
+		 * interrupt-in) endpoint. */
+		bh->buf = kmalloc(mod_data.buflen, GFP_KERNEL);
+		if (!bh->buf)
+			goto out;
+		bh->next = bh + 1;
+	}
+	fsg->buffhds[fsg_num_buffers - 1].next = &fsg->buffhds[0];
+
+	/* This should reflect the actual gadget power source */
+	usb_gadget_set_selfpowered(gadget);
+
+	snprintf(fsg_string_manufacturer, sizeof fsg_string_manufacturer,
+			"%s %s with %s",
+			init_utsname()->sysname, init_utsname()->release,
+			gadget->name);
+
+	fsg->thread_task = kthread_create(fsg_main_thread, fsg,
+			"file-storage-gadget");
+	if (IS_ERR(fsg->thread_task)) {
+		rc = PTR_ERR(fsg->thread_task);
+		goto out;
+	}
+
+	INFO(fsg, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
+	INFO(fsg, "NOTE: This driver is deprecated.  "
+			"Consider using g_mass_storage instead.\n");
+	INFO(fsg, "Number of LUNs=%d\n", fsg->nluns);
+
+	pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
+	for (i = 0; i < fsg->nluns; ++i) {
+		curlun = &fsg->luns[i];
+		if (fsg_lun_is_open(curlun)) {
+			p = NULL;
+			if (pathbuf) {
+				p = d_path(&curlun->filp->f_path,
+					   pathbuf, PATH_MAX);
+				if (IS_ERR(p))
+					p = NULL;
+			}
+			LINFO(curlun, "ro=%d, nofua=%d, file: %s\n",
+			      curlun->ro, curlun->nofua, (p ? p : "(error)"));
+		}
+	}
+	kfree(pathbuf);
+
+	DBG(fsg, "transport=%s (x%02x)\n",
+			mod_data.transport_name, mod_data.transport_type);
+	DBG(fsg, "protocol=%s (x%02x)\n",
+			mod_data.protocol_name, mod_data.protocol_type);
+	DBG(fsg, "VendorID=x%04x, ProductID=x%04x, Release=x%04x\n",
+			mod_data.vendor, mod_data.product, mod_data.release);
+	DBG(fsg, "removable=%d, stall=%d, cdrom=%d, buflen=%u\n",
+			mod_data.removable, mod_data.can_stall,
+			mod_data.cdrom, mod_data.buflen);
+	DBG(fsg, "I/O thread pid: %d\n", task_pid_nr(fsg->thread_task));
+
+	set_bit(REGISTERED, &fsg->atomic_bitflags);
+
+	/* Tell the thread to start working */
+	wake_up_process(fsg->thread_task);
+	return 0;
+
+autoconf_fail:
+	ERROR(fsg, "unable to autoconfigure all endpoints\n");
+	rc = -ENOTSUPP;
+
+out:
+	fsg->state = FSG_STATE_TERMINATED;	// The thread is dead
+	fsg_unbind(gadget);
+	complete(&fsg->thread_notifier);
+	return rc;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static void fsg_suspend(struct usb_gadget *gadget)
+{
+	struct fsg_dev		*fsg = get_gadget_data(gadget);
+
+	DBG(fsg, "suspend\n");
+	set_bit(SUSPENDED, &fsg->atomic_bitflags);
+}
+
+static void fsg_resume(struct usb_gadget *gadget)
+{
+	struct fsg_dev		*fsg = get_gadget_data(gadget);
+
+	DBG(fsg, "resume\n");
+	clear_bit(SUSPENDED, &fsg->atomic_bitflags);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_gadget_driver		fsg_driver = {
+	.max_speed	= USB_SPEED_SUPER,
+	.function	= (char *) fsg_string_product,
+	.unbind		= fsg_unbind,
+	.disconnect	= fsg_disconnect,
+	.setup		= fsg_setup,
+	.suspend	= fsg_suspend,
+	.resume		= fsg_resume,
+
+	.driver		= {
+		.name		= DRIVER_NAME,
+		.owner		= THIS_MODULE,
+		// .release = ...
+		// .suspend = ...
+		// .resume = ...
+	},
+};
+
+
+static int __init fsg_alloc(void)
+{
+	struct fsg_dev		*fsg;
+
+	fsg = kzalloc(sizeof *fsg +
+		      fsg_num_buffers * sizeof *(fsg->buffhds), GFP_KERNEL);
+
+	if (!fsg)
+		return -ENOMEM;
+	spin_lock_init(&fsg->lock);
+	init_rwsem(&fsg->filesem);
+	kref_init(&fsg->ref);
+	init_completion(&fsg->thread_notifier);
+
+	the_fsg = fsg;
+	return 0;
+}
+
+
+static int __init fsg_init(void)
+{
+	int		rc;
+	struct fsg_dev	*fsg;
+
+	rc = fsg_num_buffers_validate();
+	if (rc != 0)
+		return rc;
+
+	if ((rc = fsg_alloc()) != 0)
+		return rc;
+	fsg = the_fsg;
+	if ((rc = usb_gadget_probe_driver(&fsg_driver, fsg_bind)) != 0)
+		kref_put(&fsg->ref, fsg_release);
+	return rc;
+}
+module_init(fsg_init);
+
+
+static void __exit fsg_cleanup(void)
+{
+	struct fsg_dev	*fsg = the_fsg;
+
+	/* Unregister the driver iff the thread hasn't already done so */
+	if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags))
+		usb_gadget_unregister_driver(&fsg_driver);
+
+	/* Wait for the thread to finish up */
+	wait_for_completion(&fsg->thread_notifier);
+
+	kref_put(&fsg->ref, fsg_release);
+}
+module_exit(fsg_cleanup);
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/changes.txt linux-rpi/drivers/usb/host/dwc_common_port/changes.txt
--- linux-3.18.10/drivers/usb/host/dwc_common_port/changes.txt	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/changes.txt	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,174 @@
+
+dwc_read_reg32() and friends now take an additional parameter, a pointer to an
+IO context struct. The IO context struct should live in an os-dependent struct
+in your driver. As an example, the dwc_usb3 driver has an os-dependent struct
+named 'os_dep' embedded in the main device struct. So there these calls look
+like this:
+
+	dwc_read_reg32(&usb3_dev->os_dep.ioctx, &pcd->dev_global_regs->dcfg);
+
+	dwc_write_reg32(&usb3_dev->os_dep.ioctx,
+			&pcd->dev_global_regs->dcfg, 0);
+
+Note that for the existing Linux driver ports, it is not necessary to actually
+define the 'ioctx' member in the os-dependent struct. Since Linux does not
+require an IO context, its macros for dwc_read_reg32() and friends do not
+use the context pointer, so it is optimized away by the compiler. But it is
+necessary to add the pointer parameter to all of the call sites, to be ready
+for any future ports (such as FreeBSD) which do require an IO context.
+
+
+Similarly, dwc_alloc(), dwc_alloc_atomic(), dwc_strdup(), and dwc_free() now
+take an additional parameter, a pointer to a memory context. Examples:
+
+	addr = dwc_alloc(&usb3_dev->os_dep.memctx, size);
+
+	dwc_free(&usb3_dev->os_dep.memctx, addr);
+
+Again, for the Linux ports, it is not necessary to actually define the memctx
+member, but it is necessary to add the pointer parameter to all of the call
+sites.
+
+
+Same for dwc_dma_alloc() and dwc_dma_free(). Examples:
+
+	virt_addr = dwc_dma_alloc(&usb3_dev->os_dep.dmactx, size, &phys_addr);
+
+	dwc_dma_free(&usb3_dev->os_dep.dmactx, size, virt_addr, phys_addr);
+
+
+Same for dwc_mutex_alloc() and dwc_mutex_free(). Examples:
+
+	mutex = dwc_mutex_alloc(&usb3_dev->os_dep.mtxctx);
+
+	dwc_mutex_free(&usb3_dev->os_dep.mtxctx, mutex);
+
+
+Same for dwc_spinlock_alloc() and dwc_spinlock_free(). Examples:
+
+	lock = dwc_spinlock_alloc(&usb3_dev->osdep.splctx);
+
+	dwc_spinlock_free(&usb3_dev->osdep.splctx, lock);
+
+
+Same for dwc_timer_alloc(). Example:
+
+	timer = dwc_timer_alloc(&usb3_dev->os_dep.tmrctx, "dwc_usb3_tmr1",
+				cb_func, cb_data);
+
+
+Same for dwc_waitq_alloc(). Example:
+
+	waitq = dwc_waitq_alloc(&usb3_dev->os_dep.wtqctx);
+
+
+Same for dwc_thread_run(). Example:
+
+	thread = dwc_thread_run(&usb3_dev->os_dep.thdctx, func,
+				"dwc_usb3_thd1", data);
+
+
+Same for dwc_workq_alloc(). Example:
+
+	workq = dwc_workq_alloc(&usb3_dev->osdep.wkqctx, "dwc_usb3_wkq1");
+
+
+Same for dwc_task_alloc(). Example:
+
+	task = dwc_task_alloc(&usb3_dev->os_dep.tskctx, "dwc_usb3_tsk1",
+			      cb_func, cb_data);
+
+
+In addition to the context pointer additions, a few core functions have had
+other changes made to their parameters:
+
+The 'flags' parameter to dwc_spinlock_irqsave() and dwc_spinunlock_irqrestore()
+has been changed from a uint64_t to a dwc_irqflags_t.
+
+dwc_thread_should_stop() now takes a 'dwc_thread_t *' parameter, because the
+FreeBSD equivalent of that function requires it.
+
+And, in addition to the context pointer, dwc_task_alloc() also adds a
+'char *name' parameter, to be consistent with dwc_thread_run() and
+dwc_workq_alloc(), and because the FreeBSD equivalent of that function
+requires a unique name.
+
+
+Here is a complete list of the core functions that now take a pointer to a
+context as their first parameter:
+
+	dwc_read_reg32
+	dwc_read_reg64
+	dwc_write_reg32
+	dwc_write_reg64
+	dwc_modify_reg32
+	dwc_modify_reg64
+	dwc_alloc
+	dwc_alloc_atomic
+	dwc_strdup
+	dwc_free
+	dwc_dma_alloc
+	dwc_dma_free
+	dwc_mutex_alloc
+	dwc_mutex_free
+	dwc_spinlock_alloc
+	dwc_spinlock_free
+	dwc_timer_alloc
+	dwc_waitq_alloc
+	dwc_thread_run
+	dwc_workq_alloc
+	dwc_task_alloc     Also adds a 'char *name' as its 2nd parameter
+
+And here are the core functions that have other changes to their parameters:
+
+	dwc_spinlock_irqsave      'flags' param is now a 'dwc_irqflags_t *'
+	dwc_spinunlock_irqrestore 'flags' param is now a 'dwc_irqflags_t'
+	dwc_thread_should_stop    Adds a 'dwc_thread_t *' parameter
+
+
+
+The changes to the core functions also require some of the other library
+functions to change:
+
+	dwc_cc_if_alloc() and dwc_cc_if_free() now take a 'void *memctx'
+	(for memory allocation) as the 1st param and a 'void *mtxctx'
+	(for mutex allocation) as the 2nd param.
+
+	dwc_cc_clear(), dwc_cc_add(), dwc_cc_change(), dwc_cc_remove(),
+	dwc_cc_data_for_save(), and dwc_cc_restore_from_data() now take a
+	'void *memctx' as the 1st param.
+
+	dwc_dh_modpow(), dwc_dh_pk(), and dwc_dh_derive_keys() now take a
+	'void *memctx' as the 1st param.
+
+	dwc_modpow() now takes a 'void *memctx' as the 1st param.
+
+	dwc_alloc_notification_manager() now takes a 'void *memctx' as the
+	1st param and a 'void *wkqctx' (for work queue allocation) as the 2nd
+	param, and also now returns an integer value that is non-zero if
+	allocation of its data structures or work queue fails.
+
+	dwc_register_notifier() now takes a 'void *memctx' as the 1st param.
+
+	dwc_memory_debug_start() now takes a 'void *mem_ctx' as the first
+	param, and also now returns an integer value that is non-zero if
+	allocation of its data structures fails.
+
+
+
+Other miscellaneous changes:
+
+The DEBUG_MEMORY and DEBUG_REGS #define's have been renamed to
+DWC_DEBUG_MEMORY and DWC_DEBUG_REGS.
+
+The following #define's have been added to allow selectively compiling library
+features:
+
+	DWC_CCLIB
+	DWC_CRYPTOLIB
+	DWC_NOTIFYLIB
+	DWC_UTFLIB
+
+A DWC_LIBMODULE #define has also been added. If this is not defined, then the
+module code in dwc_common_linux.c is not compiled in. This allows linking the
+library code directly into a driver module, instead of as a standalone module.
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/doc/doxygen.cfg linux-rpi/drivers/usb/host/dwc_common_port/doc/doxygen.cfg
--- linux-3.18.10/drivers/usb/host/dwc_common_port/doc/doxygen.cfg	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/doc/doxygen.cfg	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,270 @@
+# Doxyfile 1.4.5
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+PROJECT_NAME           = "Synopsys DWC Portability and Common Library for UWB"
+PROJECT_NUMBER         =
+OUTPUT_DIRECTORY       = doc
+CREATE_SUBDIRS         = NO
+OUTPUT_LANGUAGE        = English
+BRIEF_MEMBER_DESC      = YES
+REPEAT_BRIEF           = YES
+ABBREVIATE_BRIEF       = "The $name class" \
+                         "The $name widget" \
+                         "The $name file" \
+                         is \
+                         provides \
+                         specifies \
+                         contains \
+                         represents \
+                         a \
+                         an \
+                         the
+ALWAYS_DETAILED_SEC    = YES
+INLINE_INHERITED_MEMB  = NO
+FULL_PATH_NAMES        = NO
+STRIP_FROM_PATH        = ..
+STRIP_FROM_INC_PATH    =
+SHORT_NAMES            = NO
+JAVADOC_AUTOBRIEF      = YES
+MULTILINE_CPP_IS_BRIEF = NO
+DETAILS_AT_TOP         = YES
+INHERIT_DOCS           = YES
+SEPARATE_MEMBER_PAGES  = NO
+TAB_SIZE               = 8
+ALIASES                =
+OPTIMIZE_OUTPUT_FOR_C  = YES
+OPTIMIZE_OUTPUT_JAVA   = NO
+BUILTIN_STL_SUPPORT    = NO
+DISTRIBUTE_GROUP_DOC   = NO
+SUBGROUPING            = NO
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+EXTRACT_ALL            = NO
+EXTRACT_PRIVATE        = NO
+EXTRACT_STATIC         = YES
+EXTRACT_LOCAL_CLASSES  = NO
+EXTRACT_LOCAL_METHODS  = NO
+HIDE_UNDOC_MEMBERS     = NO
+HIDE_UNDOC_CLASSES     = NO
+HIDE_FRIEND_COMPOUNDS  = NO
+HIDE_IN_BODY_DOCS      = NO
+INTERNAL_DOCS          = NO
+CASE_SENSE_NAMES       = YES
+HIDE_SCOPE_NAMES       = NO
+SHOW_INCLUDE_FILES     = NO
+INLINE_INFO            = YES
+SORT_MEMBER_DOCS       = NO
+SORT_BRIEF_DOCS        = NO
+SORT_BY_SCOPE_NAME     = NO
+GENERATE_TODOLIST      = YES
+GENERATE_TESTLIST      = YES
+GENERATE_BUGLIST       = YES
+GENERATE_DEPRECATEDLIST= YES
+ENABLED_SECTIONS       =
+MAX_INITIALIZER_LINES  = 30
+SHOW_USED_FILES        = YES
+SHOW_DIRECTORIES       = YES
+FILE_VERSION_FILTER    =
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+QUIET                  = YES
+WARNINGS               = YES
+WARN_IF_UNDOCUMENTED   = NO
+WARN_IF_DOC_ERROR      = YES
+WARN_NO_PARAMDOC       = YES
+WARN_FORMAT            = "$file:$line: $text"
+WARN_LOGFILE           =
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+INPUT                  = .
+FILE_PATTERNS          = *.c \
+                         *.cc \
+                         *.cxx \
+                         *.cpp \
+                         *.c++ \
+                         *.d \
+                         *.java \
+                         *.ii \
+                         *.ixx \
+                         *.ipp \
+                         *.i++ \
+                         *.inl \
+                         *.h \
+                         *.hh \
+                         *.hxx \
+                         *.hpp \
+                         *.h++ \
+                         *.idl \
+                         *.odl \
+                         *.cs \
+                         *.php \
+                         *.php3 \
+                         *.inc \
+                         *.m \
+                         *.mm \
+                         *.dox \
+                         *.py \
+                         *.C \
+                         *.CC \
+                         *.C++ \
+                         *.II \
+                         *.I++ \
+                         *.H \
+                         *.HH \
+                         *.H++ \
+                         *.CS \
+                         *.PHP \
+                         *.PHP3 \
+                         *.M \
+                         *.MM \
+                         *.PY
+RECURSIVE              = NO
+EXCLUDE                =
+EXCLUDE_SYMLINKS       = NO
+EXCLUDE_PATTERNS       =
+EXAMPLE_PATH           =
+EXAMPLE_PATTERNS       = *
+EXAMPLE_RECURSIVE      = NO
+IMAGE_PATH             =
+INPUT_FILTER           =
+FILTER_PATTERNS        =
+FILTER_SOURCE_FILES    = NO
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+SOURCE_BROWSER         = NO
+INLINE_SOURCES         = NO
+STRIP_CODE_COMMENTS    = YES
+REFERENCED_BY_RELATION = YES
+REFERENCES_RELATION    = YES
+USE_HTAGS              = NO
+VERBATIM_HEADERS       = NO
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+ALPHABETICAL_INDEX     = NO
+COLS_IN_ALPHA_INDEX    = 5
+IGNORE_PREFIX          =
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+GENERATE_HTML          = YES
+HTML_OUTPUT            = html
+HTML_FILE_EXTENSION    = .html
+HTML_HEADER            =
+HTML_FOOTER            =
+HTML_STYLESHEET        =
+HTML_ALIGN_MEMBERS     = YES
+GENERATE_HTMLHELP      = NO
+CHM_FILE               =
+HHC_LOCATION           =
+GENERATE_CHI           = NO
+BINARY_TOC             = NO
+TOC_EXPAND             = NO
+DISABLE_INDEX          = NO
+ENUM_VALUES_PER_LINE   = 4
+GENERATE_TREEVIEW      = YES
+TREEVIEW_WIDTH         = 250
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+GENERATE_LATEX         = NO
+LATEX_OUTPUT           = latex
+LATEX_CMD_NAME         = latex
+MAKEINDEX_CMD_NAME     = makeindex
+COMPACT_LATEX          = NO
+PAPER_TYPE             = a4wide
+EXTRA_PACKAGES         =
+LATEX_HEADER           =
+PDF_HYPERLINKS         = NO
+USE_PDFLATEX           = NO
+LATEX_BATCHMODE        = NO
+LATEX_HIDE_INDICES     = NO
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+GENERATE_RTF           = NO
+RTF_OUTPUT             = rtf
+COMPACT_RTF            = NO
+RTF_HYPERLINKS         = NO
+RTF_STYLESHEET_FILE    =
+RTF_EXTENSIONS_FILE    =
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+GENERATE_MAN           = NO
+MAN_OUTPUT             = man
+MAN_EXTENSION          = .3
+MAN_LINKS              = NO
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+GENERATE_XML           = NO
+XML_OUTPUT             = xml
+XML_SCHEMA             =
+XML_DTD                =
+XML_PROGRAMLISTING     = YES
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+GENERATE_AUTOGEN_DEF   = NO
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+GENERATE_PERLMOD       = NO
+PERLMOD_LATEX          = NO
+PERLMOD_PRETTY         = YES
+PERLMOD_MAKEVAR_PREFIX =
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor
+#---------------------------------------------------------------------------
+ENABLE_PREPROCESSING   = YES
+MACRO_EXPANSION        = NO
+EXPAND_ONLY_PREDEF     = NO
+SEARCH_INCLUDES        = YES
+INCLUDE_PATH           =
+INCLUDE_FILE_PATTERNS  =
+PREDEFINED             = DEBUG DEBUG_MEMORY
+EXPAND_AS_DEFINED      =
+SKIP_FUNCTION_MACROS   = YES
+#---------------------------------------------------------------------------
+# Configuration::additions related to external references
+#---------------------------------------------------------------------------
+TAGFILES               =
+GENERATE_TAGFILE       =
+ALLEXTERNALS           = NO
+EXTERNAL_GROUPS        = YES
+PERL_PATH              = /usr/bin/perl
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool
+#---------------------------------------------------------------------------
+CLASS_DIAGRAMS         = YES
+HIDE_UNDOC_RELATIONS   = YES
+HAVE_DOT               = NO
+CLASS_GRAPH            = YES
+COLLABORATION_GRAPH    = YES
+GROUP_GRAPHS           = YES
+UML_LOOK               = NO
+TEMPLATE_RELATIONS     = NO
+INCLUDE_GRAPH          = NO
+INCLUDED_BY_GRAPH      = YES
+CALL_GRAPH             = NO
+GRAPHICAL_HIERARCHY    = YES
+DIRECTORY_GRAPH        = YES
+DOT_IMAGE_FORMAT       = png
+DOT_PATH               =
+DOTFILE_DIRS           =
+MAX_DOT_GRAPH_DEPTH    = 1000
+DOT_TRANSPARENT        = NO
+DOT_MULTI_TARGETS      = NO
+GENERATE_LEGEND        = YES
+DOT_CLEANUP            = YES
+#---------------------------------------------------------------------------
+# Configuration::additions related to the search engine
+#---------------------------------------------------------------------------
+SEARCHENGINE           = NO
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_cc.c linux-rpi/drivers/usb/host/dwc_common_port/dwc_cc.c
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_cc.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_cc.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,532 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_cc.c $
+ * $Revision: #4 $
+ * $Date: 2010/11/04 $
+ * $Change: 1621692 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifdef DWC_CCLIB
+
+#include "dwc_cc.h"
+
+typedef struct dwc_cc
+{
+	uint32_t uid;
+	uint8_t chid[16];
+	uint8_t cdid[16];
+	uint8_t ck[16];
+	uint8_t *name;
+	uint8_t length;
+        DWC_CIRCLEQ_ENTRY(dwc_cc) list_entry;
+} dwc_cc_t;
+
+DWC_CIRCLEQ_HEAD(context_list, dwc_cc);
+
+/** The main structure for CC management.  */
+struct dwc_cc_if
+{
+	dwc_mutex_t *mutex;
+	char *filename;
+
+	unsigned is_host:1;
+
+	dwc_notifier_t *notifier;
+
+	struct context_list list;
+};
+
+#ifdef DEBUG
+static inline void dump_bytes(char *name, uint8_t *bytes, int len)
+{
+	int i;
+	DWC_PRINTF("%s: ", name);
+	for (i=0; i<len; i++) {
+		DWC_PRINTF("%02x ", bytes[i]);
+	}
+	DWC_PRINTF("\n");
+}
+#else
+#define dump_bytes(x...)
+#endif
+
+static dwc_cc_t *alloc_cc(void *mem_ctx, uint8_t *name, uint32_t length)
+{
+	dwc_cc_t *cc = dwc_alloc(mem_ctx, sizeof(dwc_cc_t));
+	if (!cc) {
+		return NULL;
+	}
+	DWC_MEMSET(cc, 0, sizeof(dwc_cc_t));
+
+	if (name) {
+		cc->length = length;
+		cc->name = dwc_alloc(mem_ctx, length);
+		if (!cc->name) {
+			dwc_free(mem_ctx, cc);
+			return NULL;
+		}
+
+		DWC_MEMCPY(cc->name, name, length);
+	}
+
+	return cc;
+}
+
+static void free_cc(void *mem_ctx, dwc_cc_t *cc)
+{
+	if (cc->name) {
+		dwc_free(mem_ctx, cc->name);
+	}
+	dwc_free(mem_ctx, cc);
+}
+
+static uint32_t next_uid(dwc_cc_if_t *cc_if)
+{
+	uint32_t uid = 0;
+	dwc_cc_t *cc;
+	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+		if (cc->uid > uid) {
+			uid = cc->uid;
+		}
+	}
+
+	if (uid == 0) {
+		uid = 255;
+	}
+
+	return uid + 1;
+}
+
+static dwc_cc_t *cc_find(dwc_cc_if_t *cc_if, uint32_t uid)
+{
+	dwc_cc_t *cc;
+	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+		if (cc->uid == uid) {
+			return cc;
+		}
+	}
+	return NULL;
+}
+
+static unsigned int cc_data_size(dwc_cc_if_t *cc_if)
+{
+	unsigned int size = 0;
+	dwc_cc_t *cc;
+	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+		size += (48 + 1);
+		if (cc->name) {
+			size += cc->length;
+		}
+	}
+	return size;
+}
+
+static uint32_t cc_match_chid(dwc_cc_if_t *cc_if, uint8_t *chid)
+{
+	uint32_t uid = 0;
+	dwc_cc_t *cc;
+
+	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+		if (DWC_MEMCMP(cc->chid, chid, 16) == 0) {
+			uid = cc->uid;
+			break;
+		}
+	}
+	return uid;
+}
+static uint32_t cc_match_cdid(dwc_cc_if_t *cc_if, uint8_t *cdid)
+{
+	uint32_t uid = 0;
+	dwc_cc_t *cc;
+
+	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+		if (DWC_MEMCMP(cc->cdid, cdid, 16) == 0) {
+			uid = cc->uid;
+			break;
+		}
+	}
+	return uid;
+}
+
+/* Internal cc_add */
+static int32_t cc_add(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *chid,
+		      uint8_t *cdid, uint8_t *ck, uint8_t *name, uint8_t length)
+{
+	dwc_cc_t *cc;
+	uint32_t uid;
+
+	if (cc_if->is_host) {
+		uid = cc_match_cdid(cc_if, cdid);
+	}
+	else {
+		uid = cc_match_chid(cc_if, chid);
+	}
+
+	if (uid) {
+		DWC_DEBUGC("Replacing previous connection context id=%d name=%p name_len=%d", uid, name, length);
+		cc = cc_find(cc_if, uid);
+	}
+	else {
+		cc = alloc_cc(mem_ctx, name, length);
+		cc->uid = next_uid(cc_if);
+		DWC_CIRCLEQ_INSERT_TAIL(&cc_if->list, cc, list_entry);
+	}
+
+	DWC_MEMCPY(&(cc->chid[0]), chid, 16);
+	DWC_MEMCPY(&(cc->cdid[0]), cdid, 16);
+	DWC_MEMCPY(&(cc->ck[0]), ck, 16);
+
+	DWC_DEBUGC("Added connection context id=%d name=%p name_len=%d", cc->uid, name, length);
+	dump_bytes("CHID", cc->chid, 16);
+	dump_bytes("CDID", cc->cdid, 16);
+	dump_bytes("CK", cc->ck, 16);
+	return cc->uid;
+}
+
+/* Internal cc_clear */
+static void cc_clear(void *mem_ctx, dwc_cc_if_t *cc_if)
+{
+	while (!DWC_CIRCLEQ_EMPTY(&cc_if->list)) {
+		dwc_cc_t *cc = DWC_CIRCLEQ_FIRST(&cc_if->list);
+		DWC_CIRCLEQ_REMOVE_INIT(&cc_if->list, cc, list_entry);
+		free_cc(mem_ctx, cc);
+	}
+}
+
+dwc_cc_if_t *dwc_cc_if_alloc(void *mem_ctx, void *mtx_ctx,
+			     dwc_notifier_t *notifier, unsigned is_host)
+{
+	dwc_cc_if_t *cc_if = NULL;
+
+	/* Allocate a common_cc_if structure */
+	cc_if = dwc_alloc(mem_ctx, sizeof(dwc_cc_if_t));
+
+	if (!cc_if)
+		return NULL;
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+	DWC_MUTEX_ALLOC_LINUX_DEBUG(cc_if->mutex);
+#else
+	cc_if->mutex = dwc_mutex_alloc(mtx_ctx);
+#endif
+	if (!cc_if->mutex) {
+		dwc_free(mem_ctx, cc_if);
+		return NULL;
+	}
+
+	DWC_CIRCLEQ_INIT(&cc_if->list);
+	cc_if->is_host = is_host;
+	cc_if->notifier = notifier;
+	return cc_if;
+}
+
+void dwc_cc_if_free(void *mem_ctx, void *mtx_ctx, dwc_cc_if_t *cc_if)
+{
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+	DWC_MUTEX_FREE(cc_if->mutex);
+#else
+	dwc_mutex_free(mtx_ctx, cc_if->mutex);
+#endif
+	cc_clear(mem_ctx, cc_if);
+	dwc_free(mem_ctx, cc_if);
+}
+
+static void cc_changed(dwc_cc_if_t *cc_if)
+{
+	if (cc_if->notifier) {
+		dwc_notify(cc_if->notifier, DWC_CC_LIST_CHANGED_NOTIFICATION, cc_if);
+	}
+}
+
+void dwc_cc_clear(void *mem_ctx, dwc_cc_if_t *cc_if)
+{
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	cc_clear(mem_ctx, cc_if);
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+	cc_changed(cc_if);
+}
+
+int32_t dwc_cc_add(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *chid,
+		   uint8_t *cdid, uint8_t *ck, uint8_t *name, uint8_t length)
+{
+	uint32_t uid;
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	uid = cc_add(mem_ctx, cc_if, chid, cdid, ck, name, length);
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+	cc_changed(cc_if);
+
+	return uid;
+}
+
+void dwc_cc_change(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id, uint8_t *chid,
+		   uint8_t *cdid, uint8_t *ck, uint8_t *name, uint8_t length)
+{
+	dwc_cc_t* cc;
+
+	DWC_DEBUGC("Change connection context %d", id);
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	cc = cc_find(cc_if, id);
+	if (!cc) {
+		DWC_ERROR("Uid %d not found in cc list\n", id);
+		DWC_MUTEX_UNLOCK(cc_if->mutex);
+		return;
+	}
+
+	if (chid) {
+		DWC_MEMCPY(&(cc->chid[0]), chid, 16);
+	}
+	if (cdid) {
+		DWC_MEMCPY(&(cc->cdid[0]), cdid, 16);
+	}
+	if (ck) {
+		DWC_MEMCPY(&(cc->ck[0]), ck, 16);
+	}
+
+	if (name) {
+		if (cc->name) {
+			dwc_free(mem_ctx, cc->name);
+		}
+		cc->name = dwc_alloc(mem_ctx, length);
+		if (!cc->name) {
+			DWC_ERROR("Out of memory in dwc_cc_change()\n");
+			DWC_MUTEX_UNLOCK(cc_if->mutex);
+			return;
+		}
+		cc->length = length;
+		DWC_MEMCPY(cc->name, name, length);
+	}
+
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+	cc_changed(cc_if);
+
+	DWC_DEBUGC("Changed connection context id=%d\n", id);
+	dump_bytes("New CHID", cc->chid, 16);
+	dump_bytes("New CDID", cc->cdid, 16);
+	dump_bytes("New CK", cc->ck, 16);
+}
+
+void dwc_cc_remove(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id)
+{
+	dwc_cc_t *cc;
+
+	DWC_DEBUGC("Removing connection context %d", id);
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	cc = cc_find(cc_if, id);
+	if (!cc) {
+		DWC_ERROR("Uid %d not found in cc list\n", id);
+		DWC_MUTEX_UNLOCK(cc_if->mutex);
+		return;
+	}
+
+	DWC_CIRCLEQ_REMOVE_INIT(&cc_if->list, cc, list_entry);
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+	free_cc(mem_ctx, cc);
+
+	cc_changed(cc_if);
+}
+
+uint8_t *dwc_cc_data_for_save(void *mem_ctx, dwc_cc_if_t *cc_if, unsigned int *length)
+{
+	uint8_t *buf, *x;
+	uint8_t zero = 0;
+	dwc_cc_t *cc;
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	*length = cc_data_size(cc_if);
+	if (!(*length)) {
+		DWC_MUTEX_UNLOCK(cc_if->mutex);
+		return NULL;
+	}
+
+	DWC_DEBUGC("Creating data for saving (length=%d)", *length);
+
+	buf = dwc_alloc(mem_ctx, *length);
+	if (!buf) {
+		*length = 0;
+		DWC_MUTEX_UNLOCK(cc_if->mutex);
+		return NULL;
+	}
+
+	x = buf;
+	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
+		DWC_MEMCPY(x, cc->chid, 16);
+		x += 16;
+		DWC_MEMCPY(x, cc->cdid, 16);
+		x += 16;
+		DWC_MEMCPY(x, cc->ck, 16);
+		x += 16;
+		if (cc->name) {
+			DWC_MEMCPY(x, &cc->length, 1);
+			x += 1;
+			DWC_MEMCPY(x, cc->name, cc->length);
+			x += cc->length;
+		}
+		else {
+			DWC_MEMCPY(x, &zero, 1);
+			x += 1;
+		}
+	}
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+	return buf;
+}
+
+void dwc_cc_restore_from_data(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *data, uint32_t length)
+{
+	uint8_t name_length;
+	uint8_t *name;
+	uint8_t *chid;
+	uint8_t *cdid;
+	uint8_t *ck;
+	uint32_t i = 0;
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	cc_clear(mem_ctx, cc_if);
+
+	while (i < length) {
+		chid = &data[i];
+		i += 16;
+		cdid = &data[i];
+		i += 16;
+		ck = &data[i];
+		i += 16;
+
+		name_length = data[i];
+		i ++;
+
+		if (name_length) {
+			name = &data[i];
+			i += name_length;
+		}
+		else {
+			name = NULL;
+		}
+
+		/* check to see if we haven't overflown the buffer */
+		if (i > length) {
+			DWC_ERROR("Data format error while attempting to load CCs "
+				  "(nlen=%d, iter=%d, buflen=%d).\n", name_length, i, length);
+			break;
+		}
+
+		cc_add(mem_ctx, cc_if, chid, cdid, ck, name, name_length);
+	}
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+	cc_changed(cc_if);
+}
+
+uint32_t dwc_cc_match_chid(dwc_cc_if_t *cc_if, uint8_t *chid)
+{
+	uint32_t uid = 0;
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	uid = cc_match_chid(cc_if, chid);
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+	return uid;
+}
+uint32_t dwc_cc_match_cdid(dwc_cc_if_t *cc_if, uint8_t *cdid)
+{
+	uint32_t uid = 0;
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	uid = cc_match_cdid(cc_if, cdid);
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+	return uid;
+}
+
+uint8_t *dwc_cc_ck(dwc_cc_if_t *cc_if, int32_t id)
+{
+	uint8_t *ck = NULL;
+	dwc_cc_t *cc;
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	cc = cc_find(cc_if, id);
+	if (cc) {
+		ck = cc->ck;
+	}
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+	return ck;
+
+}
+
+uint8_t *dwc_cc_chid(dwc_cc_if_t *cc_if, int32_t id)
+{
+	uint8_t *retval = NULL;
+	dwc_cc_t *cc;
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	cc = cc_find(cc_if, id);
+	if (cc) {
+		retval = cc->chid;
+	}
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+	return retval;
+}
+
+uint8_t *dwc_cc_cdid(dwc_cc_if_t *cc_if, int32_t id)
+{
+	uint8_t *retval = NULL;
+	dwc_cc_t *cc;
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	cc = cc_find(cc_if, id);
+	if (cc) {
+		retval = cc->cdid;
+	}
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+	return retval;
+}
+
+uint8_t *dwc_cc_name(dwc_cc_if_t *cc_if, int32_t id, uint8_t *length)
+{
+	uint8_t *retval = NULL;
+	dwc_cc_t *cc;
+
+	DWC_MUTEX_LOCK(cc_if->mutex);
+	*length = 0;
+	cc = cc_find(cc_if, id);
+	if (cc) {
+		*length = cc->length;
+		retval = cc->name;
+	}
+	DWC_MUTEX_UNLOCK(cc_if->mutex);
+
+	return retval;
+}
+
+#endif	/* DWC_CCLIB */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_cc.h linux-rpi/drivers/usb/host/dwc_common_port/dwc_cc.h
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_cc.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_cc.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,224 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_cc.h $
+ * $Revision: #4 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifndef _DWC_CC_H_
+#define _DWC_CC_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+ *
+ * This file defines the Context Context library.
+ *
+ * The main data structure is dwc_cc_if_t which is returned by either the
+ * dwc_cc_if_alloc function or returned by the module to the user via a provided
+ * function. The data structure is opaque and should only be manipulated via the
+ * functions provied in this API.
+ *
+ * It manages a list of connection contexts and operations can be performed to
+ * add, remove, query, search, and change, those contexts.  Additionally,
+ * a dwc_notifier_t object can be requested from the manager so that
+ * the user can be notified whenever the context list has changed.
+ */
+
+#include "dwc_os.h"
+#include "dwc_list.h"
+#include "dwc_notifier.h"
+
+
+/* Notifications */
+#define DWC_CC_LIST_CHANGED_NOTIFICATION "DWC_CC_LIST_CHANGED_NOTIFICATION"
+
+struct dwc_cc_if;
+typedef struct dwc_cc_if dwc_cc_if_t;
+
+
+/** @name Connection Context Operations */
+/** @{ */
+
+/** This function allocates memory for a dwc_cc_if_t structure, initializes
+ * fields to default values, and returns a pointer to the structure or NULL on
+ * error. */
+extern dwc_cc_if_t *dwc_cc_if_alloc(void *mem_ctx, void *mtx_ctx,
+				    dwc_notifier_t *notifier, unsigned is_host);
+
+/** Frees the memory for the specified CC structure allocated from
+ * dwc_cc_if_alloc(). */
+extern void dwc_cc_if_free(void *mem_ctx, void *mtx_ctx, dwc_cc_if_t *cc_if);
+
+/** Removes all contexts from the connection context list */
+extern void dwc_cc_clear(void *mem_ctx, dwc_cc_if_t *cc_if);
+
+/** Adds a connection context (CHID, CK, CDID, Name) to the connection context list.
+ * If a CHID already exists, the CK and name are overwritten.  Statistics are
+ * not overwritten.
+ *
+ * @param cc_if The cc_if structure.
+ * @param chid A pointer to the 16-byte CHID.  This value will be copied.
+ * @param ck A pointer to the 16-byte CK.  This value will be copied.
+ * @param cdid A pointer to the 16-byte CDID.  This value will be copied.
+ * @param name An optional host friendly name as defined in the association model
+ * spec.  Must be a UTF16-LE unicode string.  Can be NULL to indicated no name.
+ * @param length The length othe unicode string.
+ * @return A unique identifier used to refer to this context that is valid for
+ * as long as this context is still in the list. */
+extern int32_t dwc_cc_add(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *chid,
+			  uint8_t *cdid, uint8_t *ck, uint8_t *name,
+			  uint8_t length);
+
+/** Changes the CHID, CK, CDID, or Name values of a connection context in the
+ * list, preserving any accumulated statistics.  This would typically be called
+ * if the host decideds to change the context with a SET_CONNECTION request.
+ *
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context.
+ * @param chid A pointer to the 16-byte CHID.  This value will be copied.  NULL
+ * indicates no change.
+ * @param cdid A pointer to the 16-byte CDID.  This value will be copied.  NULL
+ * indicates no change.
+ * @param ck A pointer to the 16-byte CK.  This value will be copied.  NULL
+ * indicates no change.
+ * @param name Host friendly name UTF16-LE.  NULL indicates no change.
+ * @param length Length of name. */
+extern void dwc_cc_change(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id,
+			  uint8_t *chid, uint8_t *cdid, uint8_t *ck,
+			  uint8_t *name, uint8_t length);
+
+/** Remove the specified connection context.
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context to remove. */
+extern void dwc_cc_remove(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id);
+
+/** Get a binary block of data for the connection context list and attributes.
+ * This data can be used by the OS specific driver to save the connection
+ * context list into non-volatile memory.
+ *
+ * @param cc_if The cc_if structure.
+ * @param length Return the length of the data buffer.
+ * @return A pointer to the data buffer.  The memory for this buffer should be
+ * freed with DWC_FREE() after use. */
+extern uint8_t *dwc_cc_data_for_save(void *mem_ctx, dwc_cc_if_t *cc_if,
+				     unsigned int *length);
+
+/** Restore the connection context list from the binary data that was previously
+ * returned from a call to dwc_cc_data_for_save.  This can be used by the OS specific
+ * driver to load a connection context list from non-volatile memory.
+ *
+ * @param cc_if The cc_if structure.
+ * @param data The data bytes as returned from dwc_cc_data_for_save.
+ * @param length The length of the data. */
+extern void dwc_cc_restore_from_data(void *mem_ctx, dwc_cc_if_t *cc_if,
+				     uint8_t *data, unsigned int length);
+
+/** Find the connection context from the specified CHID.
+ *
+ * @param cc_if The cc_if structure.
+ * @param chid A pointer to the CHID data.
+ * @return A non-zero identifier of the connection context if the CHID matches.
+ * Otherwise returns 0. */
+extern uint32_t dwc_cc_match_chid(dwc_cc_if_t *cc_if, uint8_t *chid);
+
+/** Find the connection context from the specified CDID.
+ *
+ * @param cc_if The cc_if structure.
+ * @param cdid A pointer to the CDID data.
+ * @return A non-zero identifier of the connection context if the CHID matches.
+ * Otherwise returns 0. */
+extern uint32_t dwc_cc_match_cdid(dwc_cc_if_t *cc_if, uint8_t *cdid);
+
+/** Retrieve the CK from the specified connection context.
+ *
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context.
+ * @return A pointer to the CK data.  The memory does not need to be freed. */
+extern uint8_t *dwc_cc_ck(dwc_cc_if_t *cc_if, int32_t id);
+
+/** Retrieve the CHID from the specified connection context.
+ *
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context.
+ * @return A pointer to the CHID data.  The memory does not need to be freed. */
+extern uint8_t *dwc_cc_chid(dwc_cc_if_t *cc_if, int32_t id);
+
+/** Retrieve the CDID from the specified connection context.
+ *
+ * @param cc_if The cc_if structure.
+ * @param id The identifier of the connection context.
+ * @return A pointer to the CDID data.  The memory does not need to be freed. */
+extern uint8_t *dwc_cc_cdid(dwc_cc_if_t *cc_if, int32_t id);
+
+extern uint8_t *dwc_cc_name(dwc_cc_if_t *cc_if, int32_t id, uint8_t *length);
+
+/** Checks a buffer for non-zero.
+ * @param id A pointer to a 16 byte buffer.
+ * @return true if the 16 byte value is non-zero. */
+static inline unsigned dwc_assoc_is_not_zero_id(uint8_t *id) {
+	int i;
+	for (i=0; i<16; i++) {
+		if (id[i]) return 1;
+	}
+	return 0;
+}
+
+/** Checks a buffer for zero.
+ * @param id A pointer to a 16 byte buffer.
+ * @return true if the 16 byte value is zero. */
+static inline unsigned dwc_assoc_is_zero_id(uint8_t *id) {
+	return !dwc_assoc_is_not_zero_id(id);
+}
+
+/** Prints an ASCII representation for the 16-byte chid, cdid, or ck, into
+ * buffer. */
+static inline int dwc_print_id_string(char *buffer, uint8_t *id) {
+	char *ptr = buffer;
+	int i;
+	for (i=0; i<16; i++) {
+		ptr += DWC_SPRINTF(ptr, "%02x", id[i]);
+		if (i < 15) {
+			ptr += DWC_SPRINTF(ptr, " ");
+		}
+	}
+	return ptr - buffer;
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_CC_H_ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_common_fbsd.c linux-rpi/drivers/usb/host/dwc_common_port/dwc_common_fbsd.c
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_common_fbsd.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_common_fbsd.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,1308 @@
+#include "dwc_os.h"
+#include "dwc_list.h"
+
+#ifdef DWC_CCLIB
+# include "dwc_cc.h"
+#endif
+
+#ifdef DWC_CRYPTOLIB
+# include "dwc_modpow.h"
+# include "dwc_dh.h"
+# include "dwc_crypto.h"
+#endif
+
+#ifdef DWC_NOTIFYLIB
+# include "dwc_notifier.h"
+#endif
+
+/* OS-Level Implementations */
+
+/* This is the FreeBSD 7.0 kernel implementation of the DWC platform library. */
+
+
+/* MISC */
+
+void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size)
+{
+	return memset(dest, byte, size);
+}
+
+void *DWC_MEMCPY(void *dest, void const *src, uint32_t size)
+{
+	return memcpy(dest, src, size);
+}
+
+void *DWC_MEMMOVE(void *dest, void *src, uint32_t size)
+{
+	bcopy(src, dest, size);
+	return dest;
+}
+
+int DWC_MEMCMP(void *m1, void *m2, uint32_t size)
+{
+	return memcmp(m1, m2, size);
+}
+
+int DWC_STRNCMP(void *s1, void *s2, uint32_t size)
+{
+	return strncmp(s1, s2, size);
+}
+
+int DWC_STRCMP(void *s1, void *s2)
+{
+	return strcmp(s1, s2);
+}
+
+int DWC_STRLEN(char const *str)
+{
+	return strlen(str);
+}
+
+char *DWC_STRCPY(char *to, char const *from)
+{
+	return strcpy(to, from);
+}
+
+char *DWC_STRDUP(char const *str)
+{
+	int len = DWC_STRLEN(str) + 1;
+	char *new = DWC_ALLOC_ATOMIC(len);
+
+	if (!new) {
+		return NULL;
+	}
+
+	DWC_MEMCPY(new, str, len);
+	return new;
+}
+
+int DWC_ATOI(char *str, int32_t *value)
+{
+	char *end = NULL;
+
+	*value = strtol(str, &end, 0);
+	if (*end == '\0') {
+		return 0;
+	}
+
+	return -1;
+}
+
+int DWC_ATOUI(char *str, uint32_t *value)
+{
+	char *end = NULL;
+
+	*value = strtoul(str, &end, 0);
+	if (*end == '\0') {
+		return 0;
+	}
+
+	return -1;
+}
+
+
+#ifdef DWC_UTFLIB
+/* From usbstring.c */
+
+int DWC_UTF8_TO_UTF16LE(uint8_t const *s, uint16_t *cp, unsigned len)
+{
+	int	count = 0;
+	u8	c;
+	u16	uchar;
+
+	/* this insists on correct encodings, though not minimal ones.
+	 * BUT it currently rejects legit 4-byte UTF-8 code points,
+	 * which need surrogate pairs.  (Unicode 3.1 can use them.)
+	 */
+	while (len != 0 && (c = (u8) *s++) != 0) {
+		if (unlikely(c & 0x80)) {
+			// 2-byte sequence:
+			// 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+			if ((c & 0xe0) == 0xc0) {
+				uchar = (c & 0x1f) << 6;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c;
+
+			// 3-byte sequence (most CJKV characters):
+			// zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+			} else if ((c & 0xf0) == 0xe0) {
+				uchar = (c & 0x0f) << 12;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c << 6;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c;
+
+				/* no bogus surrogates */
+				if (0xd800 <= uchar && uchar <= 0xdfff)
+					goto fail;
+
+			// 4-byte sequence (surrogate pairs, currently rare):
+			// 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+			//     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+			// (uuuuu = wwww + 1)
+			// FIXME accept the surrogate code points (only)
+			} else
+				goto fail;
+		} else
+			uchar = c;
+		put_unaligned (cpu_to_le16 (uchar), cp++);
+		count++;
+		len--;
+	}
+	return count;
+fail:
+	return -1;
+}
+
+#endif	/* DWC_UTFLIB */
+
+
+/* dwc_debug.h */
+
+dwc_bool_t DWC_IN_IRQ(void)
+{
+//	return in_irq();
+	return 0;
+}
+
+dwc_bool_t DWC_IN_BH(void)
+{
+//	return in_softirq();
+	return 0;
+}
+
+void DWC_VPRINTF(char *format, va_list args)
+{
+	vprintf(format, args);
+}
+
+int DWC_VSNPRINTF(char *str, int size, char *format, va_list args)
+{
+	return vsnprintf(str, size, format, args);
+}
+
+void DWC_PRINTF(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+
+int DWC_SPRINTF(char *buffer, char *format, ...)
+{
+	int retval;
+	va_list args;
+
+	va_start(args, format);
+	retval = vsprintf(buffer, format, args);
+	va_end(args);
+	return retval;
+}
+
+int DWC_SNPRINTF(char *buffer, int size, char *format, ...)
+{
+	int retval;
+	va_list args;
+
+	va_start(args, format);
+	retval = vsnprintf(buffer, size, format, args);
+	va_end(args);
+	return retval;
+}
+
+void __DWC_WARN(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+
+void __DWC_ERROR(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+
+void DWC_EXCEPTION(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+//	BUG_ON(1);	???
+}
+
+#ifdef DEBUG
+void __DWC_DEBUG(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+#endif
+
+
+/* dwc_mem.h */
+
+#if 0
+dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size,
+				uint32_t align,
+				uint32_t alloc)
+{
+	struct dma_pool *pool = dma_pool_create("Pool", NULL,
+						size, align, alloc);
+	return (dwc_pool_t *)pool;
+}
+
+void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool)
+{
+	dma_pool_destroy((struct dma_pool *)pool);
+}
+
+void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+//	return dma_pool_alloc((struct dma_pool *)pool, GFP_KERNEL, dma_addr);
+	return dma_pool_alloc((struct dma_pool *)pool, M_WAITOK, dma_addr);
+}
+
+void *DWC_DMA_POOL_ZALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+	void *vaddr = DWC_DMA_POOL_ALLOC(pool, dma_addr);
+	memset(..);
+}
+
+void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr)
+{
+	dma_pool_free(pool, vaddr, daddr);
+}
+#endif
+
+static void dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+	if (error)
+		return;
+	*(bus_addr_t *)arg = segs[0].ds_addr;
+}
+
+void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
+{
+	dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
+	int error;
+
+	error = bus_dma_tag_create(
+#if __FreeBSD_version >= 700000
+			bus_get_dma_tag(dma->dev),	/* parent */
+#else
+			NULL,				/* parent */
+#endif
+			4, 0,				/* alignment, bounds */
+			BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
+			BUS_SPACE_MAXADDR,		/* highaddr */
+			NULL, NULL,			/* filter, filterarg */
+			size,				/* maxsize */
+			1,				/* nsegments */
+			size,				/* maxsegsize */
+			0,				/* flags */
+			NULL,				/* lockfunc */
+			NULL,				/* lockarg */
+			&dma->dma_tag);
+	if (error) {
+		device_printf(dma->dev, "%s: bus_dma_tag_create failed: %d\n",
+			      __func__, error);
+		goto fail_0;
+	}
+
+	error = bus_dmamem_alloc(dma->dma_tag, &dma->dma_vaddr,
+				 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dma->dma_map);
+	if (error) {
+		device_printf(dma->dev, "%s: bus_dmamem_alloc(%ju) failed: %d\n",
+			      __func__, (uintmax_t)size, error);
+		goto fail_1;
+	}
+
+	dma->dma_paddr = 0;
+	error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, size,
+				dmamap_cb, &dma->dma_paddr, BUS_DMA_NOWAIT);
+	if (error || dma->dma_paddr == 0) {
+		device_printf(dma->dev, "%s: bus_dmamap_load failed: %d\n",
+			      __func__, error);
+		goto fail_2;
+	}
+
+	*dma_addr = dma->dma_paddr;
+	return dma->dma_vaddr;
+
+fail_2:
+	bus_dmamap_unload(dma->dma_tag, dma->dma_map);
+fail_1:
+	bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
+	bus_dma_tag_destroy(dma->dma_tag);
+fail_0:
+	dma->dma_map = NULL;
+	dma->dma_tag = NULL;
+
+	return NULL;
+}
+
+void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr)
+{
+	dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
+
+	if (dma->dma_tag == NULL)
+		return;
+	if (dma->dma_map != NULL) {
+		bus_dmamap_sync(dma->dma_tag, dma->dma_map,
+				BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
+		bus_dmamap_unload(dma->dma_tag, dma->dma_map);
+		bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
+		dma->dma_map = NULL;
+	}
+
+	bus_dma_tag_destroy(dma->dma_tag);
+	dma->dma_tag = NULL;
+}
+
+void *__DWC_ALLOC(void *mem_ctx, uint32_t size)
+{
+	return malloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
+}
+
+void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size)
+{
+	return malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
+}
+
+void __DWC_FREE(void *mem_ctx, void *addr)
+{
+	free(addr, M_DEVBUF);
+}
+
+
+#ifdef DWC_CRYPTOLIB
+/* dwc_crypto.h */
+
+void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length)
+{
+	get_random_bytes(buffer, length);
+}
+
+int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out)
+{
+	struct crypto_blkcipher *tfm;
+	struct blkcipher_desc desc;
+	struct scatterlist sgd;
+	struct scatterlist sgs;
+
+	tfm = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
+	if (tfm == NULL) {
+		printk("failed to load transform for aes CBC\n");
+		return -1;
+	}
+
+	crypto_blkcipher_setkey(tfm, key, keylen);
+	crypto_blkcipher_set_iv(tfm, iv, 16);
+
+	sg_init_one(&sgd, out, messagelen);
+	sg_init_one(&sgs, message, messagelen);
+
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	if (crypto_blkcipher_encrypt(&desc, &sgd, &sgs, messagelen)) {
+		crypto_free_blkcipher(tfm);
+		DWC_ERROR("AES CBC encryption failed");
+		return -1;
+	}
+
+	crypto_free_blkcipher(tfm);
+	return 0;
+}
+
+int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out)
+{
+	struct crypto_hash *tfm;
+	struct hash_desc desc;
+	struct scatterlist sg;
+
+	tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(tfm)) {
+		DWC_ERROR("Failed to load transform for sha256: %ld", PTR_ERR(tfm));
+		return 0;
+	}
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	sg_init_one(&sg, message, len);
+	crypto_hash_digest(&desc, &sg, len, out);
+	crypto_free_hash(tfm);
+
+	return 1;
+}
+
+int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen,
+		    uint8_t *key, uint32_t keylen, uint8_t *out)
+{
+	struct crypto_hash *tfm;
+	struct hash_desc desc;
+	struct scatterlist sg;
+
+	tfm = crypto_alloc_hash("hmac(sha256)", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(tfm)) {
+		DWC_ERROR("Failed to load transform for hmac(sha256): %ld", PTR_ERR(tfm));
+		return 0;
+	}
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	sg_init_one(&sg, message, messagelen);
+	crypto_hash_setkey(tfm, key, keylen);
+	crypto_hash_digest(&desc, &sg, messagelen, out);
+	crypto_free_hash(tfm);
+
+	return 1;
+}
+
+#endif	/* DWC_CRYPTOLIB */
+
+
+/* Byte Ordering Conversions */
+
+uint32_t DWC_CPU_TO_LE32(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_CPU_TO_BE32(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_LE32_TO_CPU(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_BE32_TO_CPU(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint16_t DWC_CPU_TO_LE16(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_CPU_TO_BE16(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_LE16_TO_CPU(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_BE16_TO_CPU(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+
+/* Registers */
+
+uint32_t DWC_READ_REG32(void *io_ctx, uint32_t volatile *reg)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	return bus_space_read_4(io->iot, io->ioh, ior);
+}
+
+#if 0
+uint64_t DWC_READ_REG64(void *io_ctx, uint64_t volatile *reg)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	return bus_space_read_8(io->iot, io->ioh, ior);
+}
+#endif
+
+void DWC_WRITE_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t value)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	bus_space_write_4(io->iot, io->ioh, ior, value);
+}
+
+#if 0
+void DWC_WRITE_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t value)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	bus_space_write_8(io->iot, io->ioh, ior, value);
+}
+#endif
+
+void DWC_MODIFY_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t clear_mask,
+		      uint32_t set_mask)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	bus_space_write_4(io->iot, io->ioh, ior,
+			  (bus_space_read_4(io->iot, io->ioh, ior) &
+			   ~clear_mask) | set_mask);
+}
+
+#if 0
+void DWC_MODIFY_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t clear_mask,
+		      uint64_t set_mask)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	bus_space_write_8(io->iot, io->ioh, ior,
+			  (bus_space_read_8(io->iot, io->ioh, ior) &
+			   ~clear_mask) | set_mask);
+}
+#endif
+
+
+/* Locking */
+
+dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void)
+{
+	struct mtx *sl = DWC_ALLOC(sizeof(*sl));
+
+	if (!sl) {
+		DWC_ERROR("Cannot allocate memory for spinlock");
+		return NULL;
+	}
+
+	mtx_init(sl, "dw3spn", NULL, MTX_SPIN);
+	return (dwc_spinlock_t *)sl;
+}
+
+void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock)
+{
+	struct mtx *sl = (struct mtx *)lock;
+
+	mtx_destroy(sl);
+	DWC_FREE(sl);
+}
+
+void DWC_SPINLOCK(dwc_spinlock_t *lock)
+{
+	mtx_lock_spin((struct mtx *)lock);	// ???
+}
+
+void DWC_SPINUNLOCK(dwc_spinlock_t *lock)
+{
+	mtx_unlock_spin((struct mtx *)lock);	// ???
+}
+
+void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags)
+{
+	mtx_lock_spin((struct mtx *)lock);
+}
+
+void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags)
+{
+	mtx_unlock_spin((struct mtx *)lock);
+}
+
+dwc_mutex_t *DWC_MUTEX_ALLOC(void)
+{
+	struct mtx *m;
+	dwc_mutex_t *mutex = (dwc_mutex_t *)DWC_ALLOC(sizeof(struct mtx));
+
+	if (!mutex) {
+		DWC_ERROR("Cannot allocate memory for mutex");
+		return NULL;
+	}
+
+	m = (struct mtx *)mutex;
+	mtx_init(m, "dw3mtx", NULL, MTX_DEF);
+	return mutex;
+}
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+#else
+void DWC_MUTEX_FREE(dwc_mutex_t *mutex)
+{
+	mtx_destroy((struct mtx *)mutex);
+	DWC_FREE(mutex);
+}
+#endif
+
+void DWC_MUTEX_LOCK(dwc_mutex_t *mutex)
+{
+	struct mtx *m = (struct mtx *)mutex;
+
+	mtx_lock(m);
+}
+
+int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex)
+{
+	struct mtx *m = (struct mtx *)mutex;
+
+	return mtx_trylock(m);
+}
+
+void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex)
+{
+	struct mtx *m = (struct mtx *)mutex;
+
+	mtx_unlock(m);
+}
+
+
+/* Timing */
+
+void DWC_UDELAY(uint32_t usecs)
+{
+	DELAY(usecs);
+}
+
+void DWC_MDELAY(uint32_t msecs)
+{
+	do {
+		DELAY(1000);
+	} while (--msecs);
+}
+
+void DWC_MSLEEP(uint32_t msecs)
+{
+	struct timeval tv;
+
+	tv.tv_sec = msecs / 1000;
+	tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
+	pause("dw3slp", tvtohz(&tv));
+}
+
+uint32_t DWC_TIME(void)
+{
+	struct timeval tv;
+
+	microuptime(&tv);	// or getmicrouptime? (less precise, but faster)
+	return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+}
+
+
+/* Timers */
+
+struct dwc_timer {
+	struct callout t;
+	char *name;
+	dwc_spinlock_t *lock;
+	dwc_timer_callback_t cb;
+	void *data;
+};
+
+dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data)
+{
+	dwc_timer_t *t = DWC_ALLOC(sizeof(*t));
+
+	if (!t) {
+		DWC_ERROR("Cannot allocate memory for timer");
+		return NULL;
+	}
+
+	callout_init(&t->t, 1);
+
+	t->name = DWC_STRDUP(name);
+	if (!t->name) {
+		DWC_ERROR("Cannot allocate memory for timer->name");
+		goto no_name;
+	}
+
+	t->lock = DWC_SPINLOCK_ALLOC();
+	if (!t->lock) {
+		DWC_ERROR("Cannot allocate memory for lock");
+		goto no_lock;
+	}
+
+	t->cb = cb;
+	t->data = data;
+
+	return t;
+
+ no_lock:
+	DWC_FREE(t->name);
+ no_name:
+	DWC_FREE(t);
+
+	return NULL;
+}
+
+void DWC_TIMER_FREE(dwc_timer_t *timer)
+{
+	callout_stop(&timer->t);
+	DWC_SPINLOCK_FREE(timer->lock);
+	DWC_FREE(timer->name);
+	DWC_FREE(timer);
+}
+
+void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time)
+{
+	struct timeval tv;
+
+	tv.tv_sec = time / 1000;
+	tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
+	callout_reset(&timer->t, tvtohz(&tv), timer->cb, timer->data);
+}
+
+void DWC_TIMER_CANCEL(dwc_timer_t *timer)
+{
+	callout_stop(&timer->t);
+}
+
+
+/* Wait Queues */
+
+struct dwc_waitq {
+	struct mtx lock;
+	int abort;
+};
+
+dwc_waitq_t *DWC_WAITQ_ALLOC(void)
+{
+	dwc_waitq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+	if (!wq) {
+		DWC_ERROR("Cannot allocate memory for waitqueue");
+		return NULL;
+	}
+
+	mtx_init(&wq->lock, "dw3wtq", NULL, MTX_DEF);
+	wq->abort = 0;
+
+	return wq;
+}
+
+void DWC_WAITQ_FREE(dwc_waitq_t *wq)
+{
+	mtx_destroy(&wq->lock);
+	DWC_FREE(wq);
+}
+
+int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data)
+{
+//	intrmask_t ipl;
+	int result = 0;
+
+	mtx_lock(&wq->lock);
+//	ipl = splbio();
+
+	/* Skip the sleep if already aborted or triggered */
+	if (!wq->abort && !cond(data)) {
+//		splx(ipl);
+		result = msleep(wq, &wq->lock, PCATCH, "dw3wat", 0); // infinite timeout
+//		ipl = splbio();
+	}
+
+	if (result == ERESTART) {	// signaled - restart
+		result = -DWC_E_RESTART;
+
+	} else if (result == EINTR) {	// signaled - interrupt
+		result = -DWC_E_ABORT;
+
+	} else if (wq->abort) {
+		result = -DWC_E_ABORT;
+
+	} else {
+		result = 0;
+	}
+
+	wq->abort = 0;
+//	splx(ipl);
+	mtx_unlock(&wq->lock);
+	return result;
+}
+
+int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
+			       void *data, int32_t msecs)
+{
+	struct timeval tv, tv1, tv2;
+//	intrmask_t ipl;
+	int result = 0;
+
+	tv.tv_sec = msecs / 1000;
+	tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
+
+	mtx_lock(&wq->lock);
+//	ipl = splbio();
+
+	/* Skip the sleep if already aborted or triggered */
+	if (!wq->abort && !cond(data)) {
+//		splx(ipl);
+		getmicrouptime(&tv1);
+		result = msleep(wq, &wq->lock, PCATCH, "dw3wto", tvtohz(&tv));
+		getmicrouptime(&tv2);
+//		ipl = splbio();
+	}
+
+	if (result == 0) {			// awoken
+		if (wq->abort) {
+			result = -DWC_E_ABORT;
+		} else {
+			tv2.tv_usec -= tv1.tv_usec;
+			if (tv2.tv_usec < 0) {
+				tv2.tv_usec += 1000000;
+				tv2.tv_sec--;
+			}
+
+			tv2.tv_sec -= tv1.tv_sec;
+			result = tv2.tv_sec * 1000 + tv2.tv_usec / 1000;
+			result = msecs - result;
+			if (result <= 0)
+				result = 1;
+		}
+	} else if (result == ERESTART) {	// signaled - restart
+		result = -DWC_E_RESTART;
+
+	} else if (result == EINTR) {		// signaled - interrupt
+		result = -DWC_E_ABORT;
+
+	} else {				// timed out
+		result = -DWC_E_TIMEOUT;
+	}
+
+	wq->abort = 0;
+//	splx(ipl);
+	mtx_unlock(&wq->lock);
+	return result;
+}
+
+void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq)
+{
+	wakeup(wq);
+}
+
+void DWC_WAITQ_ABORT(dwc_waitq_t *wq)
+{
+//	intrmask_t ipl;
+
+	mtx_lock(&wq->lock);
+//	ipl = splbio();
+	wq->abort = 1;
+	wakeup(wq);
+//	splx(ipl);
+	mtx_unlock(&wq->lock);
+}
+
+
+/* Threading */
+
+struct dwc_thread {
+	struct proc *proc;
+	int abort;
+};
+
+dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data)
+{
+	int retval;
+	dwc_thread_t *thread = DWC_ALLOC(sizeof(*thread));
+
+	if (!thread) {
+		return NULL;
+	}
+
+	thread->abort = 0;
+	retval = kthread_create((void (*)(void *))func, data, &thread->proc,
+				RFPROC | RFNOWAIT, 0, "%s", name);
+	if (retval) {
+		DWC_FREE(thread);
+		return NULL;
+	}
+
+	return thread;
+}
+
+int DWC_THREAD_STOP(dwc_thread_t *thread)
+{
+	int retval;
+
+	thread->abort = 1;
+	retval = tsleep(&thread->abort, 0, "dw3stp", 60 * hz);
+
+	if (retval == 0) {
+		/* DWC_THREAD_EXIT() will free the thread struct */
+		return 0;
+	}
+
+	/* NOTE: We leak the thread struct if thread doesn't die */
+
+	if (retval == EWOULDBLOCK) {
+		return -DWC_E_TIMEOUT;
+	}
+
+	return -DWC_E_UNKNOWN;
+}
+
+dwc_bool_t DWC_THREAD_SHOULD_STOP(dwc_thread_t *thread)
+{
+	return thread->abort;
+}
+
+void DWC_THREAD_EXIT(dwc_thread_t *thread)
+{
+	wakeup(&thread->abort);
+	DWC_FREE(thread);
+	kthread_exit(0);
+}
+
+
+/* tasklets
+ - Runs in interrupt context (cannot sleep)
+ - Each tasklet runs on a single CPU [ How can we ensure this on FreeBSD? Does it matter? ]
+ - Different tasklets can be running simultaneously on different CPUs [ shouldn't matter ]
+ */
+struct dwc_tasklet {
+	struct task t;
+	dwc_tasklet_callback_t cb;
+	void *data;
+};
+
+static void tasklet_callback(void *data, int pending)	// what to do with pending ???
+{
+	dwc_tasklet_t *task = (dwc_tasklet_t *)data;
+
+	task->cb(task->data);
+}
+
+dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data)
+{
+	dwc_tasklet_t *task = DWC_ALLOC(sizeof(*task));
+
+	if (task) {
+		task->cb = cb;
+		task->data = data;
+		TASK_INIT(&task->t, 0, tasklet_callback, task);
+	} else {
+		DWC_ERROR("Cannot allocate memory for tasklet");
+	}
+
+	return task;
+}
+
+void DWC_TASK_FREE(dwc_tasklet_t *task)
+{
+	taskqueue_drain(taskqueue_fast, &task->t);	// ???
+	DWC_FREE(task);
+}
+
+void DWC_TASK_SCHEDULE(dwc_tasklet_t *task)
+{
+	/* Uses predefined system queue */
+	taskqueue_enqueue_fast(taskqueue_fast, &task->t);
+}
+
+
+/* workqueues
+ - Runs in process context (can sleep)
+ */
+typedef struct work_container {
+	dwc_work_callback_t cb;
+	void *data;
+	dwc_workq_t *wq;
+	char *name;
+	int hz;
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_ENTRY(work_container) entry;
+#endif
+	struct task task;
+} work_container_t;
+
+#ifdef DEBUG
+DWC_CIRCLEQ_HEAD(work_container_queue, work_container);
+#endif
+
+struct dwc_workq {
+	struct taskqueue *taskq;
+	dwc_spinlock_t *lock;
+	dwc_waitq_t *waitq;
+	int pending;
+
+#ifdef DEBUG
+	struct work_container_queue entries;
+#endif
+};
+
+static void do_work(void *data, int pending)	// what to do with pending ???
+{
+	work_container_t *container = (work_container_t *)data;
+	dwc_workq_t *wq = container->wq;
+	dwc_irqflags_t flags;
+
+	if (container->hz) {
+		pause("dw3wrk", container->hz);
+	}
+
+	container->cb(container->data);
+	DWC_DEBUG("Work done: %s, container=%p", container->name, container);
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_REMOVE(&wq->entries, container, entry);
+#endif
+	if (container->name)
+		DWC_FREE(container->name);
+	DWC_FREE(container);
+	wq->pending--;
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+	DWC_WAITQ_TRIGGER(wq->waitq);
+}
+
+static int work_done(void *data)
+{
+	dwc_workq_t *workq = (dwc_workq_t *)data;
+
+	return workq->pending == 0;
+}
+
+int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout)
+{
+	return DWC_WAITQ_WAIT_TIMEOUT(workq->waitq, work_done, workq, timeout);
+}
+
+dwc_workq_t *DWC_WORKQ_ALLOC(char *name)
+{
+	dwc_workq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+	if (!wq) {
+		DWC_ERROR("Cannot allocate memory for workqueue");
+		return NULL;
+	}
+
+	wq->taskq = taskqueue_create(name, M_NOWAIT, taskqueue_thread_enqueue, &wq->taskq);
+	if (!wq->taskq) {
+		DWC_ERROR("Cannot allocate memory for taskqueue");
+		goto no_taskq;
+	}
+
+	wq->pending = 0;
+
+	wq->lock = DWC_SPINLOCK_ALLOC();
+	if (!wq->lock) {
+		DWC_ERROR("Cannot allocate memory for spinlock");
+		goto no_lock;
+	}
+
+	wq->waitq = DWC_WAITQ_ALLOC();
+	if (!wq->waitq) {
+		DWC_ERROR("Cannot allocate memory for waitqueue");
+		goto no_waitq;
+	}
+
+	taskqueue_start_threads(&wq->taskq, 1, PWAIT, "%s taskq", "dw3tsk");
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_INIT(&wq->entries);
+#endif
+	return wq;
+
+ no_waitq:
+	DWC_SPINLOCK_FREE(wq->lock);
+ no_lock:
+	taskqueue_free(wq->taskq);
+ no_taskq:
+	DWC_FREE(wq);
+
+	return NULL;
+}
+
+void DWC_WORKQ_FREE(dwc_workq_t *wq)
+{
+#ifdef DEBUG
+	dwc_irqflags_t flags;
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+
+	if (wq->pending != 0) {
+		struct work_container *container;
+
+		DWC_ERROR("Destroying work queue with pending work");
+
+		DWC_CIRCLEQ_FOREACH(container, &wq->entries, entry) {
+			DWC_ERROR("Work %s still pending", container->name);
+		}
+	}
+
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+#endif
+	DWC_WAITQ_FREE(wq->waitq);
+	DWC_SPINLOCK_FREE(wq->lock);
+	taskqueue_free(wq->taskq);
+	DWC_FREE(wq);
+}
+
+void DWC_WORKQ_SCHEDULE(dwc_workq_t *wq, dwc_work_callback_t cb, void *data,
+			char *format, ...)
+{
+	dwc_irqflags_t flags;
+	work_container_t *container;
+	static char name[128];
+	va_list args;
+
+	va_start(args, format);
+	DWC_VSNPRINTF(name, 128, format, args);
+	va_end(args);
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+	wq->pending++;
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+	DWC_WAITQ_TRIGGER(wq->waitq);
+
+	container = DWC_ALLOC_ATOMIC(sizeof(*container));
+	if (!container) {
+		DWC_ERROR("Cannot allocate memory for container");
+		return;
+	}
+
+	container->name = DWC_STRDUP(name);
+	if (!container->name) {
+		DWC_ERROR("Cannot allocate memory for container->name");
+		DWC_FREE(container);
+		return;
+	}
+
+	container->cb = cb;
+	container->data = data;
+	container->wq = wq;
+	container->hz = 0;
+
+	DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
+
+	TASK_INIT(&container->task, 0, do_work, container);
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
+#endif
+	taskqueue_enqueue_fast(wq->taskq, &container->task);
+}
+
+void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *wq, dwc_work_callback_t cb,
+				void *data, uint32_t time, char *format, ...)
+{
+	dwc_irqflags_t flags;
+	work_container_t *container;
+	static char name[128];
+	struct timeval tv;
+	va_list args;
+
+	va_start(args, format);
+	DWC_VSNPRINTF(name, 128, format, args);
+	va_end(args);
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+	wq->pending++;
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+	DWC_WAITQ_TRIGGER(wq->waitq);
+
+	container = DWC_ALLOC_ATOMIC(sizeof(*container));
+	if (!container) {
+		DWC_ERROR("Cannot allocate memory for container");
+		return;
+	}
+
+	container->name = DWC_STRDUP(name);
+	if (!container->name) {
+		DWC_ERROR("Cannot allocate memory for container->name");
+		DWC_FREE(container);
+		return;
+	}
+
+	container->cb = cb;
+	container->data = data;
+	container->wq = wq;
+
+	tv.tv_sec = time / 1000;
+	tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
+	container->hz = tvtohz(&tv);
+
+	DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
+
+	TASK_INIT(&container->task, 0, do_work, container);
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
+#endif
+	taskqueue_enqueue_fast(wq->taskq, &container->task);
+}
+
+int DWC_WORKQ_PENDING(dwc_workq_t *wq)
+{
+	return wq->pending;
+}
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_common_linux.c linux-rpi/drivers/usb/host/dwc_common_port/dwc_common_linux.c
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_common_linux.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_common_linux.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,1434 @@
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kthread.h>
+
+#ifdef DWC_CCLIB
+# include "dwc_cc.h"
+#endif
+
+#ifdef DWC_CRYPTOLIB
+# include "dwc_modpow.h"
+# include "dwc_dh.h"
+# include "dwc_crypto.h"
+#endif
+
+#ifdef DWC_NOTIFYLIB
+# include "dwc_notifier.h"
+#endif
+
+/* OS-Level Implementations */
+
+/* This is the Linux kernel implementation of the DWC platform library. */
+#include <linux/moduleparam.h>
+#include <linux/ctype.h>
+#include <linux/crypto.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/cdev.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/jiffies.h>
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/random.h>
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/usb.h>
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
+# include <linux/usb/gadget.h>
+#else
+# include <linux/usb_gadget.h>
+#endif
+
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
+#include <asm/unaligned.h>
+
+#include "dwc_os.h"
+#include "dwc_list.h"
+
+
+/* MISC */
+
+void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size)
+{
+	return memset(dest, byte, size);
+}
+
+void *DWC_MEMCPY(void *dest, void const *src, uint32_t size)
+{
+	return memcpy(dest, src, size);
+}
+
+void *DWC_MEMMOVE(void *dest, void *src, uint32_t size)
+{
+	return memmove(dest, src, size);
+}
+
+int DWC_MEMCMP(void *m1, void *m2, uint32_t size)
+{
+	return memcmp(m1, m2, size);
+}
+
+int DWC_STRNCMP(void *s1, void *s2, uint32_t size)
+{
+	return strncmp(s1, s2, size);
+}
+
+int DWC_STRCMP(void *s1, void *s2)
+{
+	return strcmp(s1, s2);
+}
+
+int DWC_STRLEN(char const *str)
+{
+	return strlen(str);
+}
+
+char *DWC_STRCPY(char *to, char const *from)
+{
+	return strcpy(to, from);
+}
+
+char *DWC_STRDUP(char const *str)
+{
+	int len = DWC_STRLEN(str) + 1;
+	char *new = DWC_ALLOC_ATOMIC(len);
+
+	if (!new) {
+		return NULL;
+	}
+
+	DWC_MEMCPY(new, str, len);
+	return new;
+}
+
+int DWC_ATOI(const char *str, int32_t *value)
+{
+	char *end = NULL;
+
+	*value = simple_strtol(str, &end, 0);
+	if (*end == '\0') {
+		return 0;
+	}
+
+	return -1;
+}
+
+int DWC_ATOUI(const char *str, uint32_t *value)
+{
+	char *end = NULL;
+
+	*value = simple_strtoul(str, &end, 0);
+	if (*end == '\0') {
+		return 0;
+	}
+
+	return -1;
+}
+
+
+#ifdef DWC_UTFLIB
+/* From usbstring.c */
+
+int DWC_UTF8_TO_UTF16LE(uint8_t const *s, uint16_t *cp, unsigned len)
+{
+	int	count = 0;
+	u8	c;
+	u16	uchar;
+
+	/* this insists on correct encodings, though not minimal ones.
+	 * BUT it currently rejects legit 4-byte UTF-8 code points,
+	 * which need surrogate pairs.  (Unicode 3.1 can use them.)
+	 */
+	while (len != 0 && (c = (u8) *s++) != 0) {
+		if (unlikely(c & 0x80)) {
+			// 2-byte sequence:
+			// 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+			if ((c & 0xe0) == 0xc0) {
+				uchar = (c & 0x1f) << 6;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c;
+
+			// 3-byte sequence (most CJKV characters):
+			// zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+			} else if ((c & 0xf0) == 0xe0) {
+				uchar = (c & 0x0f) << 12;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c << 6;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c;
+
+				/* no bogus surrogates */
+				if (0xd800 <= uchar && uchar <= 0xdfff)
+					goto fail;
+
+			// 4-byte sequence (surrogate pairs, currently rare):
+			// 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+			//     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+			// (uuuuu = wwww + 1)
+			// FIXME accept the surrogate code points (only)
+			} else
+				goto fail;
+		} else
+			uchar = c;
+		put_unaligned (cpu_to_le16 (uchar), cp++);
+		count++;
+		len--;
+	}
+	return count;
+fail:
+	return -1;
+}
+#endif	/* DWC_UTFLIB */
+
+
+/* dwc_debug.h */
+
+dwc_bool_t DWC_IN_IRQ(void)
+{
+	return in_irq();
+}
+
+dwc_bool_t DWC_IN_BH(void)
+{
+	return in_softirq();
+}
+
+void DWC_VPRINTF(char *format, va_list args)
+{
+	vprintk(format, args);
+}
+
+int DWC_VSNPRINTF(char *str, int size, char *format, va_list args)
+{
+	return vsnprintf(str, size, format, args);
+}
+
+void DWC_PRINTF(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+
+int DWC_SPRINTF(char *buffer, char *format, ...)
+{
+	int retval;
+	va_list args;
+
+	va_start(args, format);
+	retval = vsprintf(buffer, format, args);
+	va_end(args);
+	return retval;
+}
+
+int DWC_SNPRINTF(char *buffer, int size, char *format, ...)
+{
+	int retval;
+	va_list args;
+
+	va_start(args, format);
+	retval = vsnprintf(buffer, size, format, args);
+	va_end(args);
+	return retval;
+}
+
+void __DWC_WARN(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_PRINTF(KERN_WARNING);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+
+void __DWC_ERROR(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_PRINTF(KERN_ERR);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+
+void DWC_EXCEPTION(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_PRINTF(KERN_ERR);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+	BUG_ON(1);
+}
+
+#ifdef DEBUG
+void __DWC_DEBUG(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_PRINTF(KERN_DEBUG);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+#endif
+
+
+/* dwc_mem.h */
+
+#if 0
+dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size,
+				uint32_t align,
+				uint32_t alloc)
+{
+	struct dma_pool *pool = dma_pool_create("Pool", NULL,
+						size, align, alloc);
+	return (dwc_pool_t *)pool;
+}
+
+void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool)
+{
+	dma_pool_destroy((struct dma_pool *)pool);
+}
+
+void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+	return dma_pool_alloc((struct dma_pool *)pool, GFP_KERNEL, dma_addr);
+}
+
+void *DWC_DMA_POOL_ZALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+	void *vaddr = DWC_DMA_POOL_ALLOC(pool, dma_addr);
+	memset(..);
+}
+
+void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr)
+{
+	dma_pool_free(pool, vaddr, daddr);
+}
+#endif
+
+void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
+{
+#ifdef xxCOSIM /* Only works for 32-bit cosim */
+	void *buf = dma_alloc_coherent(dma_ctx, (size_t)size, dma_addr, GFP_KERNEL);
+#else
+	void *buf = dma_alloc_coherent(dma_ctx, (size_t)size, dma_addr, GFP_KERNEL | GFP_DMA32);
+#endif
+	if (!buf) {
+		return NULL;
+	}
+
+	memset(buf, 0, (size_t)size);
+	return buf;
+}
+
+void *__DWC_DMA_ALLOC_ATOMIC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
+{
+	void *buf = dma_alloc_coherent(NULL, (size_t)size, dma_addr, GFP_ATOMIC);
+	if (!buf) {
+		return NULL;
+	}
+	memset(buf, 0, (size_t)size);
+	return buf;
+}
+
+void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr)
+{
+	dma_free_coherent(dma_ctx, size, virt_addr, dma_addr);
+}
+
+void *__DWC_ALLOC(void *mem_ctx, uint32_t size)
+{
+	return kzalloc(size, GFP_KERNEL);
+}
+
+void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size)
+{
+	return kzalloc(size, GFP_ATOMIC);
+}
+
+void __DWC_FREE(void *mem_ctx, void *addr)
+{
+	kfree(addr);
+}
+
+
+#ifdef DWC_CRYPTOLIB
+/* dwc_crypto.h */
+
+void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length)
+{
+	get_random_bytes(buffer, length);
+}
+
+int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out)
+{
+	struct crypto_blkcipher *tfm;
+	struct blkcipher_desc desc;
+	struct scatterlist sgd;
+	struct scatterlist sgs;
+
+	tfm = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
+	if (tfm == NULL) {
+		printk("failed to load transform for aes CBC\n");
+		return -1;
+	}
+
+	crypto_blkcipher_setkey(tfm, key, keylen);
+	crypto_blkcipher_set_iv(tfm, iv, 16);
+
+	sg_init_one(&sgd, out, messagelen);
+	sg_init_one(&sgs, message, messagelen);
+
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	if (crypto_blkcipher_encrypt(&desc, &sgd, &sgs, messagelen)) {
+		crypto_free_blkcipher(tfm);
+		DWC_ERROR("AES CBC encryption failed");
+		return -1;
+	}
+
+	crypto_free_blkcipher(tfm);
+	return 0;
+}
+
+int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out)
+{
+	struct crypto_hash *tfm;
+	struct hash_desc desc;
+	struct scatterlist sg;
+
+	tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(tfm)) {
+		DWC_ERROR("Failed to load transform for sha256: %ld\n", PTR_ERR(tfm));
+		return 0;
+	}
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	sg_init_one(&sg, message, len);
+	crypto_hash_digest(&desc, &sg, len, out);
+	crypto_free_hash(tfm);
+
+	return 1;
+}
+
+int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen,
+		    uint8_t *key, uint32_t keylen, uint8_t *out)
+{
+	struct crypto_hash *tfm;
+	struct hash_desc desc;
+	struct scatterlist sg;
+
+	tfm = crypto_alloc_hash("hmac(sha256)", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(tfm)) {
+		DWC_ERROR("Failed to load transform for hmac(sha256): %ld\n", PTR_ERR(tfm));
+		return 0;
+	}
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	sg_init_one(&sg, message, messagelen);
+	crypto_hash_setkey(tfm, key, keylen);
+	crypto_hash_digest(&desc, &sg, messagelen, out);
+	crypto_free_hash(tfm);
+
+	return 1;
+}
+#endif	/* DWC_CRYPTOLIB */
+
+
+/* Byte Ordering Conversions */
+
+uint32_t DWC_CPU_TO_LE32(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_CPU_TO_BE32(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_LE32_TO_CPU(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_BE32_TO_CPU(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint16_t DWC_CPU_TO_LE16(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_CPU_TO_BE16(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_LE16_TO_CPU(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_BE16_TO_CPU(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+
+/* Registers */
+
+uint32_t DWC_READ_REG32(uint32_t volatile *reg)
+{
+	return readl(reg);
+}
+
+#if 0
+uint64_t DWC_READ_REG64(uint64_t volatile *reg)
+{
+}
+#endif
+
+void DWC_WRITE_REG32(uint32_t volatile *reg, uint32_t value)
+{
+	writel(value, reg);
+}
+
+#if 0
+void DWC_WRITE_REG64(uint64_t volatile *reg, uint64_t value)
+{
+}
+#endif
+
+void DWC_MODIFY_REG32(uint32_t volatile *reg, uint32_t clear_mask, uint32_t set_mask)
+{
+	writel((readl(reg) & ~clear_mask) | set_mask, reg);
+}
+
+#if 0
+void DWC_MODIFY_REG64(uint64_t volatile *reg, uint64_t clear_mask, uint64_t set_mask)
+{
+}
+#endif
+
+
+/* Locking */
+
+dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void)
+{
+	spinlock_t *sl = (spinlock_t *)1;
+
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+	sl = DWC_ALLOC(sizeof(*sl));
+	if (!sl) {
+		DWC_ERROR("Cannot allocate memory for spinlock\n");
+		return NULL;
+	}
+
+	spin_lock_init(sl);
+#endif
+	return (dwc_spinlock_t *)sl;
+}
+
+void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock)
+{
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+	DWC_FREE(lock);
+#endif
+}
+
+void DWC_SPINLOCK(dwc_spinlock_t *lock)
+{
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+	spin_lock((spinlock_t *)lock);
+#endif
+}
+
+void DWC_SPINUNLOCK(dwc_spinlock_t *lock)
+{
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+	spin_unlock((spinlock_t *)lock);
+#endif
+}
+
+void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags)
+{
+	dwc_irqflags_t f;
+
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+	spin_lock_irqsave((spinlock_t *)lock, f);
+#else
+	local_irq_save(f);
+#endif
+	*flags = f;
+}
+
+void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags)
+{
+#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
+	spin_unlock_irqrestore((spinlock_t *)lock, flags);
+#else
+	local_irq_restore(flags);
+#endif
+}
+
+dwc_mutex_t *DWC_MUTEX_ALLOC(void)
+{
+	struct mutex *m;
+	dwc_mutex_t *mutex = (dwc_mutex_t *)DWC_ALLOC(sizeof(struct mutex));
+
+	if (!mutex) {
+		DWC_ERROR("Cannot allocate memory for mutex\n");
+		return NULL;
+	}
+
+	m = (struct mutex *)mutex;
+	mutex_init(m);
+	return mutex;
+}
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+#else
+void DWC_MUTEX_FREE(dwc_mutex_t *mutex)
+{
+	mutex_destroy((struct mutex *)mutex);
+	DWC_FREE(mutex);
+}
+#endif
+
+void DWC_MUTEX_LOCK(dwc_mutex_t *mutex)
+{
+	struct mutex *m = (struct mutex *)mutex;
+	mutex_lock(m);
+}
+
+int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex)
+{
+	struct mutex *m = (struct mutex *)mutex;
+	return mutex_trylock(m);
+}
+
+void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex)
+{
+	struct mutex *m = (struct mutex *)mutex;
+	mutex_unlock(m);
+}
+
+
+/* Timing */
+
+void DWC_UDELAY(uint32_t usecs)
+{
+	udelay(usecs);
+}
+
+void DWC_MDELAY(uint32_t msecs)
+{
+	mdelay(msecs);
+}
+
+void DWC_MSLEEP(uint32_t msecs)
+{
+	msleep(msecs);
+}
+
+uint32_t DWC_TIME(void)
+{
+	return jiffies_to_msecs(jiffies);
+}
+
+
+/* Timers */
+
+struct dwc_timer {
+	struct timer_list *t;
+	char *name;
+	dwc_timer_callback_t cb;
+	void *data;
+	uint8_t scheduled;
+	dwc_spinlock_t *lock;
+};
+
+static void timer_callback(unsigned long data)
+{
+	dwc_timer_t *timer = (dwc_timer_t *)data;
+	dwc_irqflags_t flags;
+
+	DWC_SPINLOCK_IRQSAVE(timer->lock, &flags);
+	timer->scheduled = 0;
+	DWC_SPINUNLOCK_IRQRESTORE(timer->lock, flags);
+	DWC_DEBUGC("Timer %s callback", timer->name);
+	timer->cb(timer->data);
+}
+
+dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data)
+{
+	dwc_timer_t *t = DWC_ALLOC(sizeof(*t));
+
+	if (!t) {
+		DWC_ERROR("Cannot allocate memory for timer");
+		return NULL;
+	}
+
+	t->t = DWC_ALLOC(sizeof(*t->t));
+	if (!t->t) {
+		DWC_ERROR("Cannot allocate memory for timer->t");
+		goto no_timer;
+	}
+
+	t->name = DWC_STRDUP(name);
+	if (!t->name) {
+		DWC_ERROR("Cannot allocate memory for timer->name");
+		goto no_name;
+	}
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK))
+	DWC_SPINLOCK_ALLOC_LINUX_DEBUG(t->lock);
+#else
+	t->lock = DWC_SPINLOCK_ALLOC();
+#endif
+	if (!t->lock) {
+		DWC_ERROR("Cannot allocate memory for lock");
+		goto no_lock;
+	}
+
+	t->scheduled = 0;
+	t->t->base = &boot_tvec_bases;
+	t->t->expires = jiffies;
+	setup_timer(t->t, timer_callback, (unsigned long)t);
+
+	t->cb = cb;
+	t->data = data;
+
+	return t;
+
+ no_lock:
+	DWC_FREE(t->name);
+ no_name:
+	DWC_FREE(t->t);
+ no_timer:
+	DWC_FREE(t);
+	return NULL;
+}
+
+void DWC_TIMER_FREE(dwc_timer_t *timer)
+{
+	dwc_irqflags_t flags;
+
+	DWC_SPINLOCK_IRQSAVE(timer->lock, &flags);
+
+	if (timer->scheduled) {
+		del_timer(timer->t);
+		timer->scheduled = 0;
+	}
+
+	DWC_SPINUNLOCK_IRQRESTORE(timer->lock, flags);
+	DWC_SPINLOCK_FREE(timer->lock);
+	DWC_FREE(timer->t);
+	DWC_FREE(timer->name);
+	DWC_FREE(timer);
+}
+
+void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time)
+{
+	dwc_irqflags_t flags;
+
+	DWC_SPINLOCK_IRQSAVE(timer->lock, &flags);
+
+	if (!timer->scheduled) {
+		timer->scheduled = 1;
+		DWC_DEBUGC("Scheduling timer %s to expire in +%d msec", timer->name, time);
+		timer->t->expires = jiffies + msecs_to_jiffies(time);
+		add_timer(timer->t);
+	} else {
+		DWC_DEBUGC("Modifying timer %s to expire in +%d msec", timer->name, time);
+		mod_timer(timer->t, jiffies + msecs_to_jiffies(time));
+	}
+
+	DWC_SPINUNLOCK_IRQRESTORE(timer->lock, flags);
+}
+
+void DWC_TIMER_CANCEL(dwc_timer_t *timer)
+{
+	del_timer(timer->t);
+}
+
+
+/* Wait Queues */
+
+struct dwc_waitq {
+	wait_queue_head_t queue;
+	int abort;
+};
+
+dwc_waitq_t *DWC_WAITQ_ALLOC(void)
+{
+	dwc_waitq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+	if (!wq) {
+		DWC_ERROR("Cannot allocate memory for waitqueue\n");
+		return NULL;
+	}
+
+	init_waitqueue_head(&wq->queue);
+	wq->abort = 0;
+	return wq;
+}
+
+void DWC_WAITQ_FREE(dwc_waitq_t *wq)
+{
+	DWC_FREE(wq);
+}
+
+int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data)
+{
+	int result = wait_event_interruptible(wq->queue,
+					      cond(data) || wq->abort);
+	if (result == -ERESTARTSYS) {
+		wq->abort = 0;
+		return -DWC_E_RESTART;
+	}
+
+	if (wq->abort == 1) {
+		wq->abort = 0;
+		return -DWC_E_ABORT;
+	}
+
+	wq->abort = 0;
+
+	if (result == 0) {
+		return 0;
+	}
+
+	return -DWC_E_UNKNOWN;
+}
+
+int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
+			       void *data, int32_t msecs)
+{
+	int32_t tmsecs;
+	int result = wait_event_interruptible_timeout(wq->queue,
+						      cond(data) || wq->abort,
+						      msecs_to_jiffies(msecs));
+	if (result == -ERESTARTSYS) {
+		wq->abort = 0;
+		return -DWC_E_RESTART;
+	}
+
+	if (wq->abort == 1) {
+		wq->abort = 0;
+		return -DWC_E_ABORT;
+	}
+
+	wq->abort = 0;
+
+	if (result > 0) {
+		tmsecs = jiffies_to_msecs(result);
+		if (!tmsecs) {
+			return 1;
+		}
+
+		return tmsecs;
+	}
+
+	if (result == 0) {
+		return -DWC_E_TIMEOUT;
+	}
+
+	return -DWC_E_UNKNOWN;
+}
+
+void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq)
+{
+	wq->abort = 0;
+	wake_up_interruptible(&wq->queue);
+}
+
+void DWC_WAITQ_ABORT(dwc_waitq_t *wq)
+{
+	wq->abort = 1;
+	wake_up_interruptible(&wq->queue);
+}
+
+
+/* Threading */
+
+dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data)
+{
+	struct task_struct *thread = kthread_run(func, data, name);
+
+	if (thread == ERR_PTR(-ENOMEM)) {
+		return NULL;
+	}
+
+	return (dwc_thread_t *)thread;
+}
+
+int DWC_THREAD_STOP(dwc_thread_t *thread)
+{
+	return kthread_stop((struct task_struct *)thread);
+}
+
+dwc_bool_t DWC_THREAD_SHOULD_STOP(void)
+{
+	return kthread_should_stop();
+}
+
+
+/* tasklets
+ - run in interrupt context (cannot sleep)
+ - each tasklet runs on a single CPU
+ - different tasklets can be running simultaneously on different CPUs
+ */
+struct dwc_tasklet {
+	struct tasklet_struct t;
+	dwc_tasklet_callback_t cb;
+	void *data;
+};
+
+static void tasklet_callback(unsigned long data)
+{
+	dwc_tasklet_t *t = (dwc_tasklet_t *)data;
+	t->cb(t->data);
+}
+
+dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data)
+{
+	dwc_tasklet_t *t = DWC_ALLOC(sizeof(*t));
+
+	if (t) {
+		t->cb = cb;
+		t->data = data;
+		tasklet_init(&t->t, tasklet_callback, (unsigned long)t);
+	} else {
+		DWC_ERROR("Cannot allocate memory for tasklet\n");
+	}
+
+	return t;
+}
+
+void DWC_TASK_FREE(dwc_tasklet_t *task)
+{
+	DWC_FREE(task);
+}
+
+void DWC_TASK_SCHEDULE(dwc_tasklet_t *task)
+{
+	tasklet_schedule(&task->t);
+}
+
+void DWC_TASK_HI_SCHEDULE(dwc_tasklet_t *task)
+{
+	tasklet_hi_schedule(&task->t);
+}
+
+
+/* workqueues
+ - run in process context (can sleep)
+ */
+typedef struct work_container {
+	dwc_work_callback_t cb;
+	void *data;
+	dwc_workq_t *wq;
+	char *name;
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_ENTRY(work_container) entry;
+#endif
+	struct delayed_work work;
+} work_container_t;
+
+#ifdef DEBUG
+DWC_CIRCLEQ_HEAD(work_container_queue, work_container);
+#endif
+
+struct dwc_workq {
+	struct workqueue_struct *wq;
+	dwc_spinlock_t *lock;
+	dwc_waitq_t *waitq;
+	int pending;
+
+#ifdef DEBUG
+	struct work_container_queue entries;
+#endif
+};
+
+static void do_work(struct work_struct *work)
+{
+	dwc_irqflags_t flags;
+	struct delayed_work *dw = container_of(work, struct delayed_work, work);
+	work_container_t *container = container_of(dw, struct work_container, work);
+	dwc_workq_t *wq = container->wq;
+
+	container->cb(container->data);
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_REMOVE(&wq->entries, container, entry);
+#endif
+	DWC_DEBUGC("Work done: %s, container=%p", container->name, container);
+	if (container->name) {
+		DWC_FREE(container->name);
+	}
+	DWC_FREE(container);
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+	wq->pending--;
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+	DWC_WAITQ_TRIGGER(wq->waitq);
+}
+
+static int work_done(void *data)
+{
+	dwc_workq_t *workq = (dwc_workq_t *)data;
+	return workq->pending == 0;
+}
+
+int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout)
+{
+	return DWC_WAITQ_WAIT_TIMEOUT(workq->waitq, work_done, workq, timeout);
+}
+
+dwc_workq_t *DWC_WORKQ_ALLOC(char *name)
+{
+	dwc_workq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+	if (!wq) {
+		return NULL;
+	}
+
+	wq->wq = create_singlethread_workqueue(name);
+	if (!wq->wq) {
+		goto no_wq;
+	}
+
+	wq->pending = 0;
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK))
+	DWC_SPINLOCK_ALLOC_LINUX_DEBUG(wq->lock);
+#else
+	wq->lock = DWC_SPINLOCK_ALLOC();
+#endif
+	if (!wq->lock) {
+		goto no_lock;
+	}
+
+	wq->waitq = DWC_WAITQ_ALLOC();
+	if (!wq->waitq) {
+		goto no_waitq;
+	}
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_INIT(&wq->entries);
+#endif
+	return wq;
+
+ no_waitq:
+	DWC_SPINLOCK_FREE(wq->lock);
+ no_lock:
+	destroy_workqueue(wq->wq);
+ no_wq:
+	DWC_FREE(wq);
+
+	return NULL;
+}
+
+void DWC_WORKQ_FREE(dwc_workq_t *wq)
+{
+#ifdef DEBUG
+	if (wq->pending != 0) {
+		struct work_container *wc;
+		DWC_ERROR("Destroying work queue with pending work");
+		DWC_CIRCLEQ_FOREACH(wc, &wq->entries, entry) {
+			DWC_ERROR("Work %s still pending", wc->name);
+		}
+	}
+#endif
+	destroy_workqueue(wq->wq);
+	DWC_SPINLOCK_FREE(wq->lock);
+	DWC_WAITQ_FREE(wq->waitq);
+	DWC_FREE(wq);
+}
+
+void DWC_WORKQ_SCHEDULE(dwc_workq_t *wq, dwc_work_callback_t cb, void *data,
+			char *format, ...)
+{
+	dwc_irqflags_t flags;
+	work_container_t *container;
+	static char name[128];
+	va_list args;
+
+	va_start(args, format);
+	DWC_VSNPRINTF(name, 128, format, args);
+	va_end(args);
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+	wq->pending++;
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+	DWC_WAITQ_TRIGGER(wq->waitq);
+
+	container = DWC_ALLOC_ATOMIC(sizeof(*container));
+	if (!container) {
+		DWC_ERROR("Cannot allocate memory for container\n");
+		return;
+	}
+
+	container->name = DWC_STRDUP(name);
+	if (!container->name) {
+		DWC_ERROR("Cannot allocate memory for container->name\n");
+		DWC_FREE(container);
+		return;
+	}
+
+	container->cb = cb;
+	container->data = data;
+	container->wq = wq;
+	DWC_DEBUGC("Queueing work: %s, container=%p", container->name, container);
+	INIT_WORK(&container->work.work, do_work);
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
+#endif
+	queue_work(wq->wq, &container->work.work);
+}
+
+void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *wq, dwc_work_callback_t cb,
+				void *data, uint32_t time, char *format, ...)
+{
+	dwc_irqflags_t flags;
+	work_container_t *container;
+	static char name[128];
+	va_list args;
+
+	va_start(args, format);
+	DWC_VSNPRINTF(name, 128, format, args);
+	va_end(args);
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+	wq->pending++;
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+	DWC_WAITQ_TRIGGER(wq->waitq);
+
+	container = DWC_ALLOC_ATOMIC(sizeof(*container));
+	if (!container) {
+		DWC_ERROR("Cannot allocate memory for container\n");
+		return;
+	}
+
+	container->name = DWC_STRDUP(name);
+	if (!container->name) {
+		DWC_ERROR("Cannot allocate memory for container->name\n");
+		DWC_FREE(container);
+		return;
+	}
+
+	container->cb = cb;
+	container->data = data;
+	container->wq = wq;
+	DWC_DEBUGC("Queueing work: %s, container=%p", container->name, container);
+	INIT_DELAYED_WORK(&container->work, do_work);
+
+#ifdef DEBUG
+	DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
+#endif
+	queue_delayed_work(wq->wq, &container->work, msecs_to_jiffies(time));
+}
+
+int DWC_WORKQ_PENDING(dwc_workq_t *wq)
+{
+	return wq->pending;
+}
+
+
+#ifdef DWC_LIBMODULE
+
+#ifdef DWC_CCLIB
+/* CC */
+EXPORT_SYMBOL(dwc_cc_if_alloc);
+EXPORT_SYMBOL(dwc_cc_if_free);
+EXPORT_SYMBOL(dwc_cc_clear);
+EXPORT_SYMBOL(dwc_cc_add);
+EXPORT_SYMBOL(dwc_cc_remove);
+EXPORT_SYMBOL(dwc_cc_change);
+EXPORT_SYMBOL(dwc_cc_data_for_save);
+EXPORT_SYMBOL(dwc_cc_restore_from_data);
+EXPORT_SYMBOL(dwc_cc_match_chid);
+EXPORT_SYMBOL(dwc_cc_match_cdid);
+EXPORT_SYMBOL(dwc_cc_ck);
+EXPORT_SYMBOL(dwc_cc_chid);
+EXPORT_SYMBOL(dwc_cc_cdid);
+EXPORT_SYMBOL(dwc_cc_name);
+#endif	/* DWC_CCLIB */
+
+#ifdef DWC_CRYPTOLIB
+# ifndef CONFIG_MACH_IPMATE
+/* Modpow */
+EXPORT_SYMBOL(dwc_modpow);
+
+/* DH */
+EXPORT_SYMBOL(dwc_dh_modpow);
+EXPORT_SYMBOL(dwc_dh_derive_keys);
+EXPORT_SYMBOL(dwc_dh_pk);
+# endif	/* CONFIG_MACH_IPMATE */
+
+/* Crypto */
+EXPORT_SYMBOL(dwc_wusb_aes_encrypt);
+EXPORT_SYMBOL(dwc_wusb_cmf);
+EXPORT_SYMBOL(dwc_wusb_prf);
+EXPORT_SYMBOL(dwc_wusb_fill_ccm_nonce);
+EXPORT_SYMBOL(dwc_wusb_gen_nonce);
+EXPORT_SYMBOL(dwc_wusb_gen_key);
+EXPORT_SYMBOL(dwc_wusb_gen_mic);
+#endif	/* DWC_CRYPTOLIB */
+
+/* Notification */
+#ifdef DWC_NOTIFYLIB
+EXPORT_SYMBOL(dwc_alloc_notification_manager);
+EXPORT_SYMBOL(dwc_free_notification_manager);
+EXPORT_SYMBOL(dwc_register_notifier);
+EXPORT_SYMBOL(dwc_unregister_notifier);
+EXPORT_SYMBOL(dwc_add_observer);
+EXPORT_SYMBOL(dwc_remove_observer);
+EXPORT_SYMBOL(dwc_notify);
+#endif
+
+/* Memory Debugging Routines */
+#ifdef DWC_DEBUG_MEMORY
+EXPORT_SYMBOL(dwc_alloc_debug);
+EXPORT_SYMBOL(dwc_alloc_atomic_debug);
+EXPORT_SYMBOL(dwc_free_debug);
+EXPORT_SYMBOL(dwc_dma_alloc_debug);
+EXPORT_SYMBOL(dwc_dma_free_debug);
+#endif
+
+EXPORT_SYMBOL(DWC_MEMSET);
+EXPORT_SYMBOL(DWC_MEMCPY);
+EXPORT_SYMBOL(DWC_MEMMOVE);
+EXPORT_SYMBOL(DWC_MEMCMP);
+EXPORT_SYMBOL(DWC_STRNCMP);
+EXPORT_SYMBOL(DWC_STRCMP);
+EXPORT_SYMBOL(DWC_STRLEN);
+EXPORT_SYMBOL(DWC_STRCPY);
+EXPORT_SYMBOL(DWC_STRDUP);
+EXPORT_SYMBOL(DWC_ATOI);
+EXPORT_SYMBOL(DWC_ATOUI);
+
+#ifdef DWC_UTFLIB
+EXPORT_SYMBOL(DWC_UTF8_TO_UTF16LE);
+#endif	/* DWC_UTFLIB */
+
+EXPORT_SYMBOL(DWC_IN_IRQ);
+EXPORT_SYMBOL(DWC_IN_BH);
+EXPORT_SYMBOL(DWC_VPRINTF);
+EXPORT_SYMBOL(DWC_VSNPRINTF);
+EXPORT_SYMBOL(DWC_PRINTF);
+EXPORT_SYMBOL(DWC_SPRINTF);
+EXPORT_SYMBOL(DWC_SNPRINTF);
+EXPORT_SYMBOL(__DWC_WARN);
+EXPORT_SYMBOL(__DWC_ERROR);
+EXPORT_SYMBOL(DWC_EXCEPTION);
+
+#ifdef DEBUG
+EXPORT_SYMBOL(__DWC_DEBUG);
+#endif
+
+EXPORT_SYMBOL(__DWC_DMA_ALLOC);
+EXPORT_SYMBOL(__DWC_DMA_ALLOC_ATOMIC);
+EXPORT_SYMBOL(__DWC_DMA_FREE);
+EXPORT_SYMBOL(__DWC_ALLOC);
+EXPORT_SYMBOL(__DWC_ALLOC_ATOMIC);
+EXPORT_SYMBOL(__DWC_FREE);
+
+#ifdef DWC_CRYPTOLIB
+EXPORT_SYMBOL(DWC_RANDOM_BYTES);
+EXPORT_SYMBOL(DWC_AES_CBC);
+EXPORT_SYMBOL(DWC_SHA256);
+EXPORT_SYMBOL(DWC_HMAC_SHA256);
+#endif
+
+EXPORT_SYMBOL(DWC_CPU_TO_LE32);
+EXPORT_SYMBOL(DWC_CPU_TO_BE32);
+EXPORT_SYMBOL(DWC_LE32_TO_CPU);
+EXPORT_SYMBOL(DWC_BE32_TO_CPU);
+EXPORT_SYMBOL(DWC_CPU_TO_LE16);
+EXPORT_SYMBOL(DWC_CPU_TO_BE16);
+EXPORT_SYMBOL(DWC_LE16_TO_CPU);
+EXPORT_SYMBOL(DWC_BE16_TO_CPU);
+EXPORT_SYMBOL(DWC_READ_REG32);
+EXPORT_SYMBOL(DWC_WRITE_REG32);
+EXPORT_SYMBOL(DWC_MODIFY_REG32);
+
+#if 0
+EXPORT_SYMBOL(DWC_READ_REG64);
+EXPORT_SYMBOL(DWC_WRITE_REG64);
+EXPORT_SYMBOL(DWC_MODIFY_REG64);
+#endif
+
+EXPORT_SYMBOL(DWC_SPINLOCK_ALLOC);
+EXPORT_SYMBOL(DWC_SPINLOCK_FREE);
+EXPORT_SYMBOL(DWC_SPINLOCK);
+EXPORT_SYMBOL(DWC_SPINUNLOCK);
+EXPORT_SYMBOL(DWC_SPINLOCK_IRQSAVE);
+EXPORT_SYMBOL(DWC_SPINUNLOCK_IRQRESTORE);
+EXPORT_SYMBOL(DWC_MUTEX_ALLOC);
+
+#if (!defined(DWC_LINUX) || !defined(CONFIG_DEBUG_MUTEXES))
+EXPORT_SYMBOL(DWC_MUTEX_FREE);
+#endif
+
+EXPORT_SYMBOL(DWC_MUTEX_LOCK);
+EXPORT_SYMBOL(DWC_MUTEX_TRYLOCK);
+EXPORT_SYMBOL(DWC_MUTEX_UNLOCK);
+EXPORT_SYMBOL(DWC_UDELAY);
+EXPORT_SYMBOL(DWC_MDELAY);
+EXPORT_SYMBOL(DWC_MSLEEP);
+EXPORT_SYMBOL(DWC_TIME);
+EXPORT_SYMBOL(DWC_TIMER_ALLOC);
+EXPORT_SYMBOL(DWC_TIMER_FREE);
+EXPORT_SYMBOL(DWC_TIMER_SCHEDULE);
+EXPORT_SYMBOL(DWC_TIMER_CANCEL);
+EXPORT_SYMBOL(DWC_WAITQ_ALLOC);
+EXPORT_SYMBOL(DWC_WAITQ_FREE);
+EXPORT_SYMBOL(DWC_WAITQ_WAIT);
+EXPORT_SYMBOL(DWC_WAITQ_WAIT_TIMEOUT);
+EXPORT_SYMBOL(DWC_WAITQ_TRIGGER);
+EXPORT_SYMBOL(DWC_WAITQ_ABORT);
+EXPORT_SYMBOL(DWC_THREAD_RUN);
+EXPORT_SYMBOL(DWC_THREAD_STOP);
+EXPORT_SYMBOL(DWC_THREAD_SHOULD_STOP);
+EXPORT_SYMBOL(DWC_TASK_ALLOC);
+EXPORT_SYMBOL(DWC_TASK_FREE);
+EXPORT_SYMBOL(DWC_TASK_SCHEDULE);
+EXPORT_SYMBOL(DWC_WORKQ_WAIT_WORK_DONE);
+EXPORT_SYMBOL(DWC_WORKQ_ALLOC);
+EXPORT_SYMBOL(DWC_WORKQ_FREE);
+EXPORT_SYMBOL(DWC_WORKQ_SCHEDULE);
+EXPORT_SYMBOL(DWC_WORKQ_SCHEDULE_DELAYED);
+EXPORT_SYMBOL(DWC_WORKQ_PENDING);
+
+static int dwc_common_port_init_module(void)
+{
+	int result = 0;
+
+	printk(KERN_DEBUG "Module dwc_common_port init\n" );
+
+#ifdef DWC_DEBUG_MEMORY
+	result = dwc_memory_debug_start(NULL);
+	if (result) {
+		printk(KERN_ERR
+		       "dwc_memory_debug_start() failed with error %d\n",
+		       result);
+		return result;
+	}
+#endif
+
+#ifdef DWC_NOTIFYLIB
+	result = dwc_alloc_notification_manager(NULL, NULL);
+	if (result) {
+		printk(KERN_ERR
+		       "dwc_alloc_notification_manager() failed with error %d\n",
+		       result);
+		return result;
+	}
+#endif
+	return result;
+}
+
+static void dwc_common_port_exit_module(void)
+{
+	printk(KERN_DEBUG "Module dwc_common_port exit\n" );
+
+#ifdef DWC_NOTIFYLIB
+	dwc_free_notification_manager();
+#endif
+
+#ifdef DWC_DEBUG_MEMORY
+	dwc_memory_debug_stop();
+#endif
+}
+
+module_init(dwc_common_port_init_module);
+module_exit(dwc_common_port_exit_module);
+
+MODULE_DESCRIPTION("DWC Common Library - Portable version");
+MODULE_AUTHOR("Synopsys Inc.");
+MODULE_LICENSE ("GPL");
+
+#endif	/* DWC_LIBMODULE */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_common_nbsd.c linux-rpi/drivers/usb/host/dwc_common_port/dwc_common_nbsd.c
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_common_nbsd.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_common_nbsd.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,1275 @@
+#include "dwc_os.h"
+#include "dwc_list.h"
+
+#ifdef DWC_CCLIB
+# include "dwc_cc.h"
+#endif
+
+#ifdef DWC_CRYPTOLIB
+# include "dwc_modpow.h"
+# include "dwc_dh.h"
+# include "dwc_crypto.h"
+#endif
+
+#ifdef DWC_NOTIFYLIB
+# include "dwc_notifier.h"
+#endif
+
+/* OS-Level Implementations */
+
+/* This is the NetBSD 4.0.1 kernel implementation of the DWC platform library. */
+
+
+/* MISC */
+
+void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size)
+{
+	return memset(dest, byte, size);
+}
+
+void *DWC_MEMCPY(void *dest, void const *src, uint32_t size)
+{
+	return memcpy(dest, src, size);
+}
+
+void *DWC_MEMMOVE(void *dest, void *src, uint32_t size)
+{
+	bcopy(src, dest, size);
+	return dest;
+}
+
+int DWC_MEMCMP(void *m1, void *m2, uint32_t size)
+{
+	return memcmp(m1, m2, size);
+}
+
+int DWC_STRNCMP(void *s1, void *s2, uint32_t size)
+{
+	return strncmp(s1, s2, size);
+}
+
+int DWC_STRCMP(void *s1, void *s2)
+{
+	return strcmp(s1, s2);
+}
+
+int DWC_STRLEN(char const *str)
+{
+	return strlen(str);
+}
+
+char *DWC_STRCPY(char *to, char const *from)
+{
+	return strcpy(to, from);
+}
+
+char *DWC_STRDUP(char const *str)
+{
+	int len = DWC_STRLEN(str) + 1;
+	char *new = DWC_ALLOC_ATOMIC(len);
+
+	if (!new) {
+		return NULL;
+	}
+
+	DWC_MEMCPY(new, str, len);
+	return new;
+}
+
+int DWC_ATOI(char *str, int32_t *value)
+{
+	char *end = NULL;
+
+	/* NetBSD doesn't have 'strtol' in the kernel, but 'strtoul'
+	 * should be equivalent on 2's complement machines
+	 */
+	*value = strtoul(str, &end, 0);
+	if (*end == '\0') {
+		return 0;
+	}
+
+	return -1;
+}
+
+int DWC_ATOUI(char *str, uint32_t *value)
+{
+	char *end = NULL;
+
+	*value = strtoul(str, &end, 0);
+	if (*end == '\0') {
+		return 0;
+	}
+
+	return -1;
+}
+
+
+#ifdef DWC_UTFLIB
+/* From usbstring.c */
+
+int DWC_UTF8_TO_UTF16LE(uint8_t const *s, uint16_t *cp, unsigned len)
+{
+	int	count = 0;
+	u8	c;
+	u16	uchar;
+
+	/* this insists on correct encodings, though not minimal ones.
+	 * BUT it currently rejects legit 4-byte UTF-8 code points,
+	 * which need surrogate pairs.  (Unicode 3.1 can use them.)
+	 */
+	while (len != 0 && (c = (u8) *s++) != 0) {
+		if (unlikely(c & 0x80)) {
+			// 2-byte sequence:
+			// 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+			if ((c & 0xe0) == 0xc0) {
+				uchar = (c & 0x1f) << 6;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c;
+
+			// 3-byte sequence (most CJKV characters):
+			// zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+			} else if ((c & 0xf0) == 0xe0) {
+				uchar = (c & 0x0f) << 12;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c << 6;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c;
+
+				/* no bogus surrogates */
+				if (0xd800 <= uchar && uchar <= 0xdfff)
+					goto fail;
+
+			// 4-byte sequence (surrogate pairs, currently rare):
+			// 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+			//     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+			// (uuuuu = wwww + 1)
+			// FIXME accept the surrogate code points (only)
+			} else
+				goto fail;
+		} else
+			uchar = c;
+		put_unaligned (cpu_to_le16 (uchar), cp++);
+		count++;
+		len--;
+	}
+	return count;
+fail:
+	return -1;
+}
+
+#endif	/* DWC_UTFLIB */
+
+
+/* dwc_debug.h */
+
+dwc_bool_t DWC_IN_IRQ(void)
+{
+//	return in_irq();
+	return 0;
+}
+
+dwc_bool_t DWC_IN_BH(void)
+{
+//	return in_softirq();
+	return 0;
+}
+
+void DWC_VPRINTF(char *format, va_list args)
+{
+	vprintf(format, args);
+}
+
+int DWC_VSNPRINTF(char *str, int size, char *format, va_list args)
+{
+	return vsnprintf(str, size, format, args);
+}
+
+void DWC_PRINTF(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+
+int DWC_SPRINTF(char *buffer, char *format, ...)
+{
+	int retval;
+	va_list args;
+
+	va_start(args, format);
+	retval = vsprintf(buffer, format, args);
+	va_end(args);
+	return retval;
+}
+
+int DWC_SNPRINTF(char *buffer, int size, char *format, ...)
+{
+	int retval;
+	va_list args;
+
+	va_start(args, format);
+	retval = vsnprintf(buffer, size, format, args);
+	va_end(args);
+	return retval;
+}
+
+void __DWC_WARN(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+
+void __DWC_ERROR(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+
+void DWC_EXCEPTION(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+//	BUG_ON(1);	???
+}
+
+#ifdef DEBUG
+void __DWC_DEBUG(char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	DWC_VPRINTF(format, args);
+	va_end(args);
+}
+#endif
+
+
+/* dwc_mem.h */
+
+#if 0
+dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size,
+				uint32_t align,
+				uint32_t alloc)
+{
+	struct dma_pool *pool = dma_pool_create("Pool", NULL,
+						size, align, alloc);
+	return (dwc_pool_t *)pool;
+}
+
+void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool)
+{
+	dma_pool_destroy((struct dma_pool *)pool);
+}
+
+void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+//	return dma_pool_alloc((struct dma_pool *)pool, GFP_KERNEL, dma_addr);
+	return dma_pool_alloc((struct dma_pool *)pool, M_WAITOK, dma_addr);
+}
+
+void *DWC_DMA_POOL_ZALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
+{
+	void *vaddr = DWC_DMA_POOL_ALLOC(pool, dma_addr);
+	memset(..);
+}
+
+void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr)
+{
+	dma_pool_free(pool, vaddr, daddr);
+}
+#endif
+
+void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
+{
+	dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
+	int error;
+
+	error = bus_dmamem_alloc(dma->dma_tag, size, 1, size, dma->segs,
+				 sizeof(dma->segs) / sizeof(dma->segs[0]),
+				 &dma->nsegs, BUS_DMA_NOWAIT);
+	if (error) {
+		printf("%s: bus_dmamem_alloc(%ju) failed: %d\n", __func__,
+		       (uintmax_t)size, error);
+		goto fail_0;
+	}
+
+	error = bus_dmamem_map(dma->dma_tag, dma->segs, dma->nsegs, size,
+			       (caddr_t *)&dma->dma_vaddr,
+			       BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
+	if (error) {
+		printf("%s: bus_dmamem_map failed: %d\n", __func__, error);
+		goto fail_1;
+	}
+
+	error = bus_dmamap_create(dma->dma_tag, size, 1, size, 0,
+				  BUS_DMA_NOWAIT, &dma->dma_map);
+	if (error) {
+		printf("%s: bus_dmamap_create failed: %d\n", __func__, error);
+		goto fail_2;
+	}
+
+	error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr,
+				size, NULL, BUS_DMA_NOWAIT);
+	if (error) {
+		printf("%s: bus_dmamap_load failed: %d\n", __func__, error);
+		goto fail_3;
+	}
+
+	dma->dma_paddr = (bus_addr_t)dma->segs[0].ds_addr;
+	*dma_addr = dma->dma_paddr;
+	return dma->dma_vaddr;
+
+fail_3:
+	bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
+fail_2:
+	bus_dmamem_unmap(dma->dma_tag, dma->dma_vaddr, size);
+fail_1:
+	bus_dmamem_free(dma->dma_tag, dma->segs, dma->nsegs);
+fail_0:
+	dma->dma_map = NULL;
+	dma->dma_vaddr = NULL;
+	dma->nsegs = 0;
+
+	return NULL;
+}
+
+void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr)
+{
+	dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
+
+	if (dma->dma_map != NULL) {
+		bus_dmamap_sync(dma->dma_tag, dma->dma_map, 0, size,
+				BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
+		bus_dmamap_unload(dma->dma_tag, dma->dma_map);
+		bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
+		bus_dmamem_unmap(dma->dma_tag, dma->dma_vaddr, size);
+		bus_dmamem_free(dma->dma_tag, dma->segs, dma->nsegs);
+		dma->dma_paddr = 0;
+		dma->dma_map = NULL;
+		dma->dma_vaddr = NULL;
+		dma->nsegs = 0;
+	}
+}
+
+void *__DWC_ALLOC(void *mem_ctx, uint32_t size)
+{
+	return malloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
+}
+
+void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size)
+{
+	return malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
+}
+
+void __DWC_FREE(void *mem_ctx, void *addr)
+{
+	free(addr, M_DEVBUF);
+}
+
+
+#ifdef DWC_CRYPTOLIB
+/* dwc_crypto.h */
+
+void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length)
+{
+	get_random_bytes(buffer, length);
+}
+
+int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out)
+{
+	struct crypto_blkcipher *tfm;
+	struct blkcipher_desc desc;
+	struct scatterlist sgd;
+	struct scatterlist sgs;
+
+	tfm = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
+	if (tfm == NULL) {
+		printk("failed to load transform for aes CBC\n");
+		return -1;
+	}
+
+	crypto_blkcipher_setkey(tfm, key, keylen);
+	crypto_blkcipher_set_iv(tfm, iv, 16);
+
+	sg_init_one(&sgd, out, messagelen);
+	sg_init_one(&sgs, message, messagelen);
+
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	if (crypto_blkcipher_encrypt(&desc, &sgd, &sgs, messagelen)) {
+		crypto_free_blkcipher(tfm);
+		DWC_ERROR("AES CBC encryption failed");
+		return -1;
+	}
+
+	crypto_free_blkcipher(tfm);
+	return 0;
+}
+
+int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out)
+{
+	struct crypto_hash *tfm;
+	struct hash_desc desc;
+	struct scatterlist sg;
+
+	tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(tfm)) {
+		DWC_ERROR("Failed to load transform for sha256: %ld", PTR_ERR(tfm));
+		return 0;
+	}
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	sg_init_one(&sg, message, len);
+	crypto_hash_digest(&desc, &sg, len, out);
+	crypto_free_hash(tfm);
+
+	return 1;
+}
+
+int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen,
+		    uint8_t *key, uint32_t keylen, uint8_t *out)
+{
+	struct crypto_hash *tfm;
+	struct hash_desc desc;
+	struct scatterlist sg;
+
+	tfm = crypto_alloc_hash("hmac(sha256)", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(tfm)) {
+		DWC_ERROR("Failed to load transform for hmac(sha256): %ld", PTR_ERR(tfm));
+		return 0;
+	}
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	sg_init_one(&sg, message, messagelen);
+	crypto_hash_setkey(tfm, key, keylen);
+	crypto_hash_digest(&desc, &sg, messagelen, out);
+	crypto_free_hash(tfm);
+
+	return 1;
+}
+
+#endif	/* DWC_CRYPTOLIB */
+
+
+/* Byte Ordering Conversions */
+
+uint32_t DWC_CPU_TO_LE32(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_CPU_TO_BE32(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_LE32_TO_CPU(uint32_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint32_t DWC_BE32_TO_CPU(uint32_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+
+	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
+#endif
+}
+
+uint16_t DWC_CPU_TO_LE16(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_CPU_TO_BE16(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_LE16_TO_CPU(uint16_t *p)
+{
+#ifdef __LITTLE_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+uint16_t DWC_BE16_TO_CPU(uint16_t *p)
+{
+#ifdef __BIG_ENDIAN
+	return *p;
+#else
+	uint8_t *u_p = (uint8_t *)p;
+	return (u_p[1] | (u_p[0] << 8));
+#endif
+}
+
+
+/* Registers */
+
+uint32_t DWC_READ_REG32(void *io_ctx, uint32_t volatile *reg)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	return bus_space_read_4(io->iot, io->ioh, ior);
+}
+
+#if 0
+uint64_t DWC_READ_REG64(void *io_ctx, uint64_t volatile *reg)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	return bus_space_read_8(io->iot, io->ioh, ior);
+}
+#endif
+
+void DWC_WRITE_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t value)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	bus_space_write_4(io->iot, io->ioh, ior, value);
+}
+
+#if 0
+void DWC_WRITE_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t value)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	bus_space_write_8(io->iot, io->ioh, ior, value);
+}
+#endif
+
+void DWC_MODIFY_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t clear_mask,
+		      uint32_t set_mask)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	bus_space_write_4(io->iot, io->ioh, ior,
+			  (bus_space_read_4(io->iot, io->ioh, ior) &
+			   ~clear_mask) | set_mask);
+}
+
+#if 0
+void DWC_MODIFY_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t clear_mask,
+		      uint64_t set_mask)
+{
+	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
+	bus_size_t ior = (bus_size_t)reg;
+
+	bus_space_write_8(io->iot, io->ioh, ior,
+			  (bus_space_read_8(io->iot, io->ioh, ior) &
+			   ~clear_mask) | set_mask);
+}
+#endif
+
+
+/* Locking */
+
+dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void)
+{
+	struct simplelock *sl = DWC_ALLOC(sizeof(*sl));
+
+	if (!sl) {
+		DWC_ERROR("Cannot allocate memory for spinlock");
+		return NULL;
+	}
+
+	simple_lock_init(sl);
+	return (dwc_spinlock_t *)sl;
+}
+
+void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock)
+{
+	struct simplelock *sl = (struct simplelock *)lock;
+
+	DWC_FREE(sl);
+}
+
+void DWC_SPINLOCK(dwc_spinlock_t *lock)
+{
+	simple_lock((struct simplelock *)lock);
+}
+
+void DWC_SPINUNLOCK(dwc_spinlock_t *lock)
+{
+	simple_unlock((struct simplelock *)lock);
+}
+
+void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags)
+{
+	simple_lock((struct simplelock *)lock);
+	*flags = splbio();
+}
+
+void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags)
+{
+	splx(flags);
+	simple_unlock((struct simplelock *)lock);
+}
+
+dwc_mutex_t *DWC_MUTEX_ALLOC(void)
+{
+	dwc_mutex_t *mutex = DWC_ALLOC(sizeof(struct lock));
+
+	if (!mutex) {
+		DWC_ERROR("Cannot allocate memory for mutex");
+		return NULL;
+	}
+
+	lockinit((struct lock *)mutex, 0, "dw3mtx", 0, 0);
+	return mutex;
+}
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
+#else
+void DWC_MUTEX_FREE(dwc_mutex_t *mutex)
+{
+	DWC_FREE(mutex);
+}
+#endif
+
+void DWC_MUTEX_LOCK(dwc_mutex_t *mutex)
+{
+	lockmgr((struct lock *)mutex, LK_EXCLUSIVE, NULL);
+}
+
+int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex)
+{
+	int status;
+
+	status = lockmgr((struct lock *)mutex, LK_EXCLUSIVE | LK_NOWAIT, NULL);
+	return status == 0;
+}
+
+void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex)
+{
+	lockmgr((struct lock *)mutex, LK_RELEASE, NULL);
+}
+
+
+/* Timing */
+
+void DWC_UDELAY(uint32_t usecs)
+{
+	DELAY(usecs);
+}
+
+void DWC_MDELAY(uint32_t msecs)
+{
+	do {
+		DELAY(1000);
+	} while (--msecs);
+}
+
+void DWC_MSLEEP(uint32_t msecs)
+{
+	struct timeval tv;
+
+	tv.tv_sec = msecs / 1000;
+	tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
+	tsleep(&tv, 0, "dw3slp", tvtohz(&tv));
+}
+
+uint32_t DWC_TIME(void)
+{
+	struct timeval tv;
+
+	microuptime(&tv);	// or getmicrouptime? (less precise, but faster)
+	return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+}
+
+
+/* Timers */
+
+struct dwc_timer {
+	struct callout t;
+	char *name;
+	dwc_spinlock_t *lock;
+	dwc_timer_callback_t cb;
+	void *data;
+};
+
+dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data)
+{
+	dwc_timer_t *t = DWC_ALLOC(sizeof(*t));
+
+	if (!t) {
+		DWC_ERROR("Cannot allocate memory for timer");
+		return NULL;
+	}
+
+	callout_init(&t->t);
+
+	t->name = DWC_STRDUP(name);
+	if (!t->name) {
+		DWC_ERROR("Cannot allocate memory for timer->name");
+		goto no_name;
+	}
+
+	t->lock = DWC_SPINLOCK_ALLOC();
+	if (!t->lock) {
+		DWC_ERROR("Cannot allocate memory for timer->lock");
+		goto no_lock;
+	}
+
+	t->cb = cb;
+	t->data = data;
+
+	return t;
+
+ no_lock:
+	DWC_FREE(t->name);
+ no_name:
+	DWC_FREE(t);
+
+	return NULL;
+}
+
+void DWC_TIMER_FREE(dwc_timer_t *timer)
+{
+	callout_stop(&timer->t);
+	DWC_SPINLOCK_FREE(timer->lock);
+	DWC_FREE(timer->name);
+	DWC_FREE(timer);
+}
+
+void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time)
+{
+	struct timeval tv;
+
+	tv.tv_sec = time / 1000;
+	tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
+	callout_reset(&timer->t, tvtohz(&tv), timer->cb, timer->data);
+}
+
+void DWC_TIMER_CANCEL(dwc_timer_t *timer)
+{
+	callout_stop(&timer->t);
+}
+
+
+/* Wait Queues */
+
+struct dwc_waitq {
+	struct simplelock lock;
+	int abort;
+};
+
+dwc_waitq_t *DWC_WAITQ_ALLOC(void)
+{
+	dwc_waitq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+	if (!wq) {
+		DWC_ERROR("Cannot allocate memory for waitqueue");
+		return NULL;
+	}
+
+	simple_lock_init(&wq->lock);
+	wq->abort = 0;
+
+	return wq;
+}
+
+void DWC_WAITQ_FREE(dwc_waitq_t *wq)
+{
+	DWC_FREE(wq);
+}
+
+int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data)
+{
+	int ipl;
+	int result = 0;
+
+	simple_lock(&wq->lock);
+	ipl = splbio();
+
+	/* Skip the sleep if already aborted or triggered */
+	if (!wq->abort && !cond(data)) {
+		splx(ipl);
+		result = ltsleep(wq, PCATCH, "dw3wat", 0, &wq->lock); // infinite timeout
+		ipl = splbio();
+	}
+
+	if (result == 0) {			// awoken
+		if (wq->abort) {
+			wq->abort = 0;
+			result = -DWC_E_ABORT;
+		} else {
+			result = 0;
+		}
+
+		splx(ipl);
+		simple_unlock(&wq->lock);
+	} else {
+		wq->abort = 0;
+		splx(ipl);
+		simple_unlock(&wq->lock);
+
+		if (result == ERESTART) {	// signaled - restart
+			result = -DWC_E_RESTART;
+		} else {			// signaled - must be EINTR
+			result = -DWC_E_ABORT;
+		}
+	}
+
+	return result;
+}
+
+int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
+			       void *data, int32_t msecs)
+{
+	struct timeval tv, tv1, tv2;
+	int ipl;
+	int result = 0;
+
+	tv.tv_sec = msecs / 1000;
+	tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
+
+	simple_lock(&wq->lock);
+	ipl = splbio();
+
+	/* Skip the sleep if already aborted or triggered */
+	if (!wq->abort && !cond(data)) {
+		splx(ipl);
+		getmicrouptime(&tv1);
+		result = ltsleep(wq, PCATCH, "dw3wto", tvtohz(&tv), &wq->lock);
+		getmicrouptime(&tv2);
+		ipl = splbio();
+	}
+
+	if (result == 0) {			// awoken
+		if (wq->abort) {
+			wq->abort = 0;
+			splx(ipl);
+			simple_unlock(&wq->lock);
+			result = -DWC_E_ABORT;
+		} else {
+			splx(ipl);
+			simple_unlock(&wq->lock);
+
+			tv2.tv_usec -= tv1.tv_usec;
+			if (tv2.tv_usec < 0) {
+				tv2.tv_usec += 1000000;
+				tv2.tv_sec--;
+			}
+
+			tv2.tv_sec -= tv1.tv_sec;
+			result = tv2.tv_sec * 1000 + tv2.tv_usec / 1000;
+			result = msecs - result;
+			if (result <= 0)
+				result = 1;
+		}
+	} else {
+		wq->abort = 0;
+		splx(ipl);
+		simple_unlock(&wq->lock);
+
+		if (result == ERESTART) {	// signaled - restart
+			result = -DWC_E_RESTART;
+
+		} else if (result == EINTR) {		// signaled - interrupt
+			result = -DWC_E_ABORT;
+
+		} else {				// timed out
+			result = -DWC_E_TIMEOUT;
+		}
+	}
+
+	return result;
+}
+
+void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq)
+{
+	wakeup(wq);
+}
+
+void DWC_WAITQ_ABORT(dwc_waitq_t *wq)
+{
+	int ipl;
+
+	simple_lock(&wq->lock);
+	ipl = splbio();
+	wq->abort = 1;
+	wakeup(wq);
+	splx(ipl);
+	simple_unlock(&wq->lock);
+}
+
+
+/* Threading */
+
+struct dwc_thread {
+	struct proc *proc;
+	int abort;
+};
+
+dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data)
+{
+	int retval;
+	dwc_thread_t *thread = DWC_ALLOC(sizeof(*thread));
+
+	if (!thread) {
+		return NULL;
+	}
+
+	thread->abort = 0;
+	retval = kthread_create1((void (*)(void *))func, data, &thread->proc,
+				 "%s", name);
+	if (retval) {
+		DWC_FREE(thread);
+		return NULL;
+	}
+
+	return thread;
+}
+
+int DWC_THREAD_STOP(dwc_thread_t *thread)
+{
+	int retval;
+
+	thread->abort = 1;
+	retval = tsleep(&thread->abort, 0, "dw3stp", 60 * hz);
+
+	if (retval == 0) {
+		/* DWC_THREAD_EXIT() will free the thread struct */
+		return 0;
+	}
+
+	/* NOTE: We leak the thread struct if thread doesn't die */
+
+	if (retval == EWOULDBLOCK) {
+		return -DWC_E_TIMEOUT;
+	}
+
+	return -DWC_E_UNKNOWN;
+}
+
+dwc_bool_t DWC_THREAD_SHOULD_STOP(dwc_thread_t *thread)
+{
+	return thread->abort;
+}
+
+void DWC_THREAD_EXIT(dwc_thread_t *thread)
+{
+	wakeup(&thread->abort);
+	DWC_FREE(thread);
+	kthread_exit(0);
+}
+
+/* tasklets
+ - Runs in interrupt context (cannot sleep)
+ - Each tasklet runs on a single CPU
+ - Different tasklets can be running simultaneously on different CPUs
+ [ On NetBSD there is no corresponding mechanism, drivers don't have bottom-
+   halves. So we just call the callback directly from DWC_TASK_SCHEDULE() ]
+ */
+struct dwc_tasklet {
+	dwc_tasklet_callback_t cb;
+	void *data;
+};
+
+static void tasklet_callback(void *data)
+{
+	dwc_tasklet_t *task = (dwc_tasklet_t *)data;
+
+	task->cb(task->data);
+}
+
+dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data)
+{
+	dwc_tasklet_t *task = DWC_ALLOC(sizeof(*task));
+
+	if (task) {
+		task->cb = cb;
+		task->data = data;
+	} else {
+		DWC_ERROR("Cannot allocate memory for tasklet");
+	}
+
+	return task;
+}
+
+void DWC_TASK_FREE(dwc_tasklet_t *task)
+{
+	DWC_FREE(task);
+}
+
+void DWC_TASK_SCHEDULE(dwc_tasklet_t *task)
+{
+	tasklet_callback(task);
+}
+
+
+/* workqueues
+ - Runs in process context (can sleep)
+ */
+typedef struct work_container {
+	dwc_work_callback_t cb;
+	void *data;
+	dwc_workq_t *wq;
+	char *name;
+	int hz;
+	struct work task;
+} work_container_t;
+
+struct dwc_workq {
+	struct workqueue *taskq;
+	dwc_spinlock_t *lock;
+	dwc_waitq_t *waitq;
+	int pending;
+	struct work_container *container;
+};
+
+static void do_work(struct work *task, void *data)
+{
+	dwc_workq_t *wq = (dwc_workq_t *)data;
+	work_container_t *container = wq->container;
+	dwc_irqflags_t flags;
+
+	if (container->hz) {
+		tsleep(container, 0, "dw3wrk", container->hz);
+	}
+
+	container->cb(container->data);
+	DWC_DEBUG("Work done: %s, container=%p", container->name, container);
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+	if (container->name)
+		DWC_FREE(container->name);
+	DWC_FREE(container);
+	wq->pending--;
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+	DWC_WAITQ_TRIGGER(wq->waitq);
+}
+
+static int work_done(void *data)
+{
+	dwc_workq_t *workq = (dwc_workq_t *)data;
+
+	return workq->pending == 0;
+}
+
+int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout)
+{
+	return DWC_WAITQ_WAIT_TIMEOUT(workq->waitq, work_done, workq, timeout);
+}
+
+dwc_workq_t *DWC_WORKQ_ALLOC(char *name)
+{
+	int result;
+	dwc_workq_t *wq = DWC_ALLOC(sizeof(*wq));
+
+	if (!wq) {
+		DWC_ERROR("Cannot allocate memory for workqueue");
+		return NULL;
+	}
+
+	result = workqueue_create(&wq->taskq, name, do_work, wq, 0 /*PWAIT*/,
+				  IPL_BIO, 0);
+	if (result) {
+		DWC_ERROR("Cannot create workqueue");
+		goto no_taskq;
+	}
+
+	wq->pending = 0;
+
+	wq->lock = DWC_SPINLOCK_ALLOC();
+	if (!wq->lock) {
+		DWC_ERROR("Cannot allocate memory for spinlock");
+		goto no_lock;
+	}
+
+	wq->waitq = DWC_WAITQ_ALLOC();
+	if (!wq->waitq) {
+		DWC_ERROR("Cannot allocate memory for waitqueue");
+		goto no_waitq;
+	}
+
+	return wq;
+
+ no_waitq:
+	DWC_SPINLOCK_FREE(wq->lock);
+ no_lock:
+	workqueue_destroy(wq->taskq);
+ no_taskq:
+	DWC_FREE(wq);
+
+	return NULL;
+}
+
+void DWC_WORKQ_FREE(dwc_workq_t *wq)
+{
+#ifdef DEBUG
+	dwc_irqflags_t flags;
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+
+	if (wq->pending != 0) {
+		struct work_container *container = wq->container;
+
+		DWC_ERROR("Destroying work queue with pending work");
+
+		if (container && container->name) {
+			DWC_ERROR("Work %s still pending", container->name);
+		}
+	}
+
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+#endif
+	DWC_WAITQ_FREE(wq->waitq);
+	DWC_SPINLOCK_FREE(wq->lock);
+	workqueue_destroy(wq->taskq);
+	DWC_FREE(wq);
+}
+
+void DWC_WORKQ_SCHEDULE(dwc_workq_t *wq, dwc_work_callback_t cb, void *data,
+			char *format, ...)
+{
+	dwc_irqflags_t flags;
+	work_container_t *container;
+	static char name[128];
+	va_list args;
+
+	va_start(args, format);
+	DWC_VSNPRINTF(name, 128, format, args);
+	va_end(args);
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+	wq->pending++;
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+	DWC_WAITQ_TRIGGER(wq->waitq);
+
+	container = DWC_ALLOC_ATOMIC(sizeof(*container));
+	if (!container) {
+		DWC_ERROR("Cannot allocate memory for container");
+		return;
+	}
+
+	container->name = DWC_STRDUP(name);
+	if (!container->name) {
+		DWC_ERROR("Cannot allocate memory for container->name");
+		DWC_FREE(container);
+		return;
+	}
+
+	container->cb = cb;
+	container->data = data;
+	container->wq = wq;
+	container->hz = 0;
+	wq->container = container;
+
+	DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
+	workqueue_enqueue(wq->taskq, &container->task);
+}
+
+void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *wq, dwc_work_callback_t cb,
+				void *data, uint32_t time, char *format, ...)
+{
+	dwc_irqflags_t flags;
+	work_container_t *container;
+	static char name[128];
+	struct timeval tv;
+	va_list args;
+
+	va_start(args, format);
+	DWC_VSNPRINTF(name, 128, format, args);
+	va_end(args);
+
+	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
+	wq->pending++;
+	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
+	DWC_WAITQ_TRIGGER(wq->waitq);
+
+	container = DWC_ALLOC_ATOMIC(sizeof(*container));
+	if (!container) {
+		DWC_ERROR("Cannot allocate memory for container");
+		return;
+	}
+
+	container->name = DWC_STRDUP(name);
+	if (!container->name) {
+		DWC_ERROR("Cannot allocate memory for container->name");
+		DWC_FREE(container);
+		return;
+	}
+
+	container->cb = cb;
+	container->data = data;
+	container->wq = wq;
+	tv.tv_sec = time / 1000;
+	tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
+	container->hz = tvtohz(&tv);
+	wq->container = container;
+
+	DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
+	workqueue_enqueue(wq->taskq, &container->task);
+}
+
+int DWC_WORKQ_PENDING(dwc_workq_t *wq)
+{
+	return wq->pending;
+}
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_crypto.c linux-rpi/drivers/usb/host/dwc_common_port/dwc_crypto.c
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_crypto.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_crypto.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,308 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_crypto.c $
+ * $Revision: #5 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+
+/** @file
+ * This file contains the WUSB cryptographic routines.
+ */
+
+#ifdef DWC_CRYPTOLIB
+
+#include "dwc_crypto.h"
+#include "usb.h"
+
+#ifdef DEBUG
+static inline void dump_bytes(char *name, uint8_t *bytes, int len)
+{
+	int i;
+	DWC_PRINTF("%s: ", name);
+	for (i=0; i<len; i++) {
+		DWC_PRINTF("%02x ", bytes[i]);
+	}
+	DWC_PRINTF("\n");
+}
+#else
+#define dump_bytes(x...)
+#endif
+
+/* Display a block */
+void show_block(const u8 *blk, const char *prefix, const char *suffix, int a)
+{
+#ifdef DWC_DEBUG_CRYPTO
+	int i, blksize = 16;
+
+	DWC_DEBUG("%s", prefix);
+
+	if (suffix == NULL) {
+		suffix = "\n";
+		blksize = a;
+	}
+
+	for (i = 0; i < blksize; i++)
+		DWC_PRINT("%02x%s", *blk++, ((i & 3) == 3) ? "  " : " ");
+	DWC_PRINT(suffix);
+#endif
+}
+
+/**
+ * Encrypts an array of bytes using the AES encryption engine.
+ * If <code>dst</code> == <code>src</code>, then the bytes will be encrypted
+ * in-place.
+ *
+ * @return  0 on success, negative error code on error.
+ */
+int dwc_wusb_aes_encrypt(u8 *src, u8 *key, u8 *dst)
+{
+	u8 block_t[16];
+	DWC_MEMSET(block_t, 0, 16);
+
+	return DWC_AES_CBC(src, 16, key, 16, block_t, dst);
+}
+
+/**
+ * The CCM-MAC-FUNCTION described in section 6.5 of the WUSB spec.
+ * This function takes a data string and returns the encrypted CBC
+ * Counter-mode MIC.
+ *
+ * @param key     The 128-bit symmetric key.
+ * @param nonce   The CCM nonce.
+ * @param label   The unique 14-byte ASCII text label.
+ * @param bytes   The byte array to be encrypted.
+ * @param len     Length of the byte array.
+ * @param result  Byte array to receive the 8-byte encrypted MIC.
+ */
+void dwc_wusb_cmf(u8 *key, u8 *nonce,
+		  char *label, u8 *bytes, int len, u8 *result)
+{
+	u8 block_m[16];
+	u8 block_x[16];
+	u8 block_t[8];
+	int idx, blkNum;
+	u16 la = (u16)(len + 14);
+
+	/* Set the AES-128 key */
+	//dwc_aes_setkey(tfm, key, 16);
+
+	/* Fill block B0 from flags = 0x59, N, and l(m) = 0 */
+	block_m[0] = 0x59;
+	for (idx = 0; idx < 13; idx++)
+		block_m[idx + 1] = nonce[idx];
+	block_m[14] = 0;
+	block_m[15] = 0;
+
+	/* Produce the CBC IV */
+	dwc_wusb_aes_encrypt(block_m, key, block_x);
+	show_block(block_m, "CBC IV in: ", "\n", 0);
+	show_block(block_x, "CBC IV out:", "\n", 0);
+
+	/* Fill block B1 from l(a) = Blen + 14, and A */
+	block_x[0] ^= (u8)(la >> 8);
+	block_x[1] ^= (u8)la;
+	for (idx = 0; idx < 14; idx++)
+		block_x[idx + 2] ^= label[idx];
+	show_block(block_x, "After xor: ", "b1\n", 16);
+
+	dwc_wusb_aes_encrypt(block_x, key, block_x);
+	show_block(block_x, "After AES: ", "b1\n", 16);
+
+	idx = 0;
+	blkNum = 0;
+
+	/* Fill remaining blocks with B */
+	while (len-- > 0) {
+		block_x[idx] ^= *bytes++;
+		if (++idx >= 16) {
+			idx = 0;
+			show_block(block_x, "After xor: ", "\n", blkNum);
+			dwc_wusb_aes_encrypt(block_x, key, block_x);
+			show_block(block_x, "After AES: ", "\n", blkNum);
+			blkNum++;
+		}
+	}
+
+	/* Handle partial last block */
+	if (idx > 0) {
+		show_block(block_x, "After xor: ", "\n", blkNum);
+		dwc_wusb_aes_encrypt(block_x, key, block_x);
+		show_block(block_x, "After AES: ", "\n", blkNum);
+	}
+
+	/* Save the MIC tag */
+	DWC_MEMCPY(block_t, block_x, 8);
+	show_block(block_t, "MIC tag  : ", NULL, 8);
+
+	/* Fill block A0 from flags = 0x01, N, and counter = 0 */
+	block_m[0] = 0x01;
+	block_m[14] = 0;
+	block_m[15] = 0;
+
+	/* Encrypt the counter */
+	dwc_wusb_aes_encrypt(block_m, key, block_x);
+	show_block(block_x, "CTR[MIC] : ", NULL, 8);
+
+	/* XOR with MIC tag */
+	for (idx = 0; idx < 8; idx++) {
+		block_t[idx] ^= block_x[idx];
+	}
+
+	/* Return result to caller */
+	DWC_MEMCPY(result, block_t, 8);
+	show_block(result, "CCM-MIC  : ", NULL, 8);
+
+}
+
+/**
+ * The PRF function described in section 6.5 of the WUSB spec. This function
+ * concatenates MIC values returned from dwc_cmf() to create a value of
+ * the requested length.
+ *
+ * @param prf_len  Length of the PRF function in bits (64, 128, or 256).
+ * @param key, nonce, label, bytes, len  Same as for dwc_cmf().
+ * @param result   Byte array to receive the result.
+ */
+void dwc_wusb_prf(int prf_len, u8 *key,
+		  u8 *nonce, char *label, u8 *bytes, int len, u8 *result)
+{
+	int i;
+
+	nonce[0] = 0;
+	for (i = 0; i < prf_len >> 6; i++, nonce[0]++) {
+		dwc_wusb_cmf(key, nonce, label, bytes, len, result);
+		result += 8;
+	}
+}
+
+/**
+ * Fills in CCM Nonce per the WUSB spec.
+ *
+ * @param[in] haddr Host address.
+ * @param[in] daddr Device address.
+ * @param[in] tkid Session Key(PTK) identifier.
+ * @param[out] nonce Pointer to where the CCM Nonce output is to be written.
+ */
+void dwc_wusb_fill_ccm_nonce(uint16_t haddr, uint16_t daddr, uint8_t *tkid,
+			     uint8_t *nonce)
+{
+
+	DWC_DEBUG("%s %x %x\n", __func__, daddr, haddr);
+
+	DWC_MEMSET(&nonce[0], 0, 16);
+
+	DWC_MEMCPY(&nonce[6], tkid, 3);
+	nonce[9] = daddr & 0xFF;
+	nonce[10] = (daddr >> 8) & 0xFF;
+	nonce[11] = haddr & 0xFF;
+	nonce[12] = (haddr >> 8) & 0xFF;
+
+	dump_bytes("CCM nonce", nonce, 16);
+}
+
+/**
+ * Generates a 16-byte cryptographic-grade random number for the Host/Device
+ * Nonce.
+ */
+void dwc_wusb_gen_nonce(uint16_t addr, uint8_t *nonce)
+{
+	uint8_t inonce[16];
+	uint32_t temp[4];
+
+	/* Fill in the Nonce */
+	DWC_MEMSET(&inonce[0], 0, sizeof(inonce));
+	inonce[9] = addr & 0xFF;
+	inonce[10] = (addr >> 8) & 0xFF;
+	inonce[11] = inonce[9];
+	inonce[12] = inonce[10];
+
+	/* Collect "randomness samples" */
+	DWC_RANDOM_BYTES((uint8_t *)temp, 16);
+
+	dwc_wusb_prf_128((uint8_t *)temp, nonce,
+			 "Random Numbers", (uint8_t *)temp, sizeof(temp),
+			 nonce);
+}
+
+/**
+ * Generates the Session Key (PTK) and Key Confirmation Key (KCK) per the
+ * WUSB spec.
+ *
+ * @param[in] ccm_nonce Pointer to CCM Nonce.
+ * @param[in] mk Master Key to derive the session from
+ * @param[in] hnonce Pointer to Host Nonce.
+ * @param[in] dnonce Pointer to Device Nonce.
+ * @param[out] kck Pointer to where the KCK output is to be written.
+ * @param[out] ptk Pointer to where the PTK output is to be written.
+ */
+void dwc_wusb_gen_key(uint8_t *ccm_nonce, uint8_t *mk, uint8_t *hnonce,
+		      uint8_t *dnonce, uint8_t *kck, uint8_t *ptk)
+{
+	uint8_t idata[32];
+	uint8_t odata[32];
+
+	dump_bytes("ck", mk, 16);
+	dump_bytes("hnonce", hnonce, 16);
+	dump_bytes("dnonce", dnonce, 16);
+
+	/* The data is the HNonce and DNonce concatenated */
+	DWC_MEMCPY(&idata[0], hnonce, 16);
+	DWC_MEMCPY(&idata[16], dnonce, 16);
+
+	dwc_wusb_prf_256(mk, ccm_nonce, "Pair-wise keys", idata, 32, odata);
+
+	/* Low 16 bytes of the result is the KCK, high 16 is the PTK */
+	DWC_MEMCPY(kck, &odata[0], 16);
+	DWC_MEMCPY(ptk, &odata[16], 16);
+
+	dump_bytes("kck", kck, 16);
+	dump_bytes("ptk", ptk, 16);
+}
+
+/**
+ * Generates the Message Integrity Code over the Handshake data per the
+ * WUSB spec.
+ *
+ * @param ccm_nonce Pointer to CCM Nonce.
+ * @param kck   Pointer to Key Confirmation Key.
+ * @param data  Pointer to Handshake data to be checked.
+ * @param mic   Pointer to where the MIC output is to be written.
+ */
+void dwc_wusb_gen_mic(uint8_t *ccm_nonce, uint8_t *kck,
+		      uint8_t *data, uint8_t *mic)
+{
+
+	dwc_wusb_prf_64(kck, ccm_nonce, "out-of-bandMIC",
+			data, WUSB_HANDSHAKE_LEN_FOR_MIC, mic);
+}
+
+#endif	/* DWC_CRYPTOLIB */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_crypto.h linux-rpi/drivers/usb/host/dwc_common_port/dwc_crypto.h
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_crypto.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_crypto.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,111 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_crypto.h $
+ * $Revision: #3 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+
+#ifndef _DWC_CRYPTO_H_
+#define _DWC_CRYPTO_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+ *
+ * This file contains declarations for the WUSB Cryptographic routines as
+ * defined in the WUSB spec.  They are only to be used internally by the DWC UWB
+ * modules.
+ */
+
+#include "dwc_os.h"
+
+int dwc_wusb_aes_encrypt(u8 *src, u8 *key, u8 *dst);
+
+void dwc_wusb_cmf(u8 *key, u8 *nonce,
+		  char *label, u8 *bytes, int len, u8 *result);
+void dwc_wusb_prf(int prf_len, u8 *key,
+		  u8 *nonce, char *label, u8 *bytes, int len, u8 *result);
+
+/**
+ * The PRF-64 function described in section 6.5 of the WUSB spec.
+ *
+ * @param key, nonce, label, bytes, len, result  Same as for dwc_prf().
+ */
+static inline void dwc_wusb_prf_64(u8 *key, u8 *nonce,
+				   char *label, u8 *bytes, int len, u8 *result)
+{
+	dwc_wusb_prf(64, key, nonce, label, bytes, len, result);
+}
+
+/**
+ * The PRF-128 function described in section 6.5 of the WUSB spec.
+ *
+ * @param key, nonce, label, bytes, len, result  Same as for dwc_prf().
+ */
+static inline void dwc_wusb_prf_128(u8 *key, u8 *nonce,
+				    char *label, u8 *bytes, int len, u8 *result)
+{
+	dwc_wusb_prf(128, key, nonce, label, bytes, len, result);
+}
+
+/**
+ * The PRF-256 function described in section 6.5 of the WUSB spec.
+ *
+ * @param key, nonce, label, bytes, len, result  Same as for dwc_prf().
+ */
+static inline void dwc_wusb_prf_256(u8 *key, u8 *nonce,
+				    char *label, u8 *bytes, int len, u8 *result)
+{
+	dwc_wusb_prf(256, key, nonce, label, bytes, len, result);
+}
+
+
+void dwc_wusb_fill_ccm_nonce(uint16_t haddr, uint16_t daddr, uint8_t *tkid,
+			       uint8_t *nonce);
+void dwc_wusb_gen_nonce(uint16_t addr,
+			  uint8_t *nonce);
+
+void dwc_wusb_gen_key(uint8_t *ccm_nonce, uint8_t *mk,
+			uint8_t *hnonce, uint8_t *dnonce,
+			uint8_t *kck, uint8_t *ptk);
+
+
+void dwc_wusb_gen_mic(uint8_t *ccm_nonce, uint8_t
+			*kck, uint8_t *data, uint8_t *mic);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_CRYPTO_H_ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_dh.c linux-rpi/drivers/usb/host/dwc_common_port/dwc_dh.c
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_dh.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_dh.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,291 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_dh.c $
+ * $Revision: #3 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifdef DWC_CRYPTOLIB
+
+#ifndef CONFIG_MACH_IPMATE
+
+#include "dwc_dh.h"
+#include "dwc_modpow.h"
+
+#ifdef DEBUG
+/* This function prints out a buffer in the format described in the Association
+ * Model specification. */
+static void dh_dump(char *str, void *_num, int len)
+{
+	uint8_t *num = _num;
+	int i;
+	DWC_PRINTF("%s\n", str);
+	for (i = 0; i < len; i ++) {
+		DWC_PRINTF("%02x", num[i]);
+		if (((i + 1) % 2) == 0) DWC_PRINTF(" ");
+		if (((i + 1) % 26) == 0) DWC_PRINTF("\n");
+	}
+
+	DWC_PRINTF("\n");
+}
+#else
+#define dh_dump(_x...) do {; } while(0)
+#endif
+
+/* Constant g value */
+static __u32 dh_g[] = {
+	0x02000000,
+};
+
+/* Constant p value */
+static __u32 dh_p[] = {
+	0xFFFFFFFF, 0xFFFFFFFF, 0xA2DA0FC9, 0x34C26821, 0x8B62C6C4, 0xD11CDC80, 0x084E0229, 0x74CC678A,
+	0xA6BE0B02, 0x229B133B, 0x79084A51, 0xDD04348E, 0xB31995EF, 0x1B433ACD, 0x6D0A2B30, 0x37145FF2,
+	0x6D35E14F, 0x45C2516D, 0x76B585E4, 0xC67E5E62, 0xE9424CF4, 0x6BED37A6, 0xB65CFF0B, 0xEDB706F4,
+	0xFB6B38EE, 0xA59F895A, 0x11249FAE, 0xE61F4B7C, 0x51662849, 0x3D5BE4EC, 0xB87C00C2, 0x05BF63A1,
+	0x3648DA98, 0x9AD3551C, 0xA83F1669, 0x5FCF24FD, 0x235D6583, 0x96ADA3DC, 0x56F3621C, 0xBB528520,
+	0x0729D59E, 0x6D969670, 0x4E350C67, 0x0498BC4A, 0x086C74F1, 0x7C2118CA, 0x465E9032, 0x3BCE362E,
+	0x2C779EE3, 0x03860E18, 0xA283279B, 0x8FA207EC, 0xF05DC5B5, 0xC9524C6F, 0xF6CB2BDE, 0x18175895,
+	0x7C499539, 0xE56A95EA, 0x1826D215, 0x1005FA98, 0x5A8E7215, 0x2DC4AA8A, 0x0D1733AD, 0x337A5004,
+	0xAB2155A8, 0x64BA1CDF, 0x0485FBEC, 0x0AEFDB58, 0x5771EA8A, 0x7D0C065D, 0x850F97B3, 0xC7E4E1A6,
+	0x8CAEF5AB, 0xD73309DB, 0xE0948C1E, 0x9D61254A, 0x26D2E3CE, 0x6BEED21A, 0x06FA2FF1, 0x64088AD9,
+	0x730276D8, 0x646AC83E, 0x182B1F52, 0x0C207B17, 0x5717E1BB, 0x6C5D617A, 0xC0880977, 0xE246D9BA,
+	0xA04FE208, 0x31ABE574, 0xFC5BDB43, 0x8E10FDE0, 0x20D1824B, 0xCAD23AA9, 0xFFFFFFFF, 0xFFFFFFFF,
+};
+
+static void dh_swap_bytes(void *_in, void *_out, uint32_t len)
+{
+	uint8_t *in = _in;
+	uint8_t *out = _out;
+	int i;
+	for (i=0; i<len; i++) {
+		out[i] = in[len-1-i];
+	}
+}
+
+/* Computes the modular exponentiation (num^exp % mod).  num, exp, and mod are
+ * big endian numbers of size len, in bytes.  Each len value must be a multiple
+ * of 4. */
+int dwc_dh_modpow(void *mem_ctx, void *num, uint32_t num_len,
+		  void *exp, uint32_t exp_len,
+		  void *mod, uint32_t mod_len,
+		  void *out)
+{
+	/* modpow() takes little endian numbers.  AM uses big-endian.  This
+	 * function swaps bytes of numbers before passing onto modpow. */
+
+	int retval = 0;
+	uint32_t *result;
+
+	uint32_t *bignum_num = dwc_alloc(mem_ctx, num_len + 4);
+	uint32_t *bignum_exp = dwc_alloc(mem_ctx, exp_len + 4);
+	uint32_t *bignum_mod = dwc_alloc(mem_ctx, mod_len + 4);
+
+	dh_swap_bytes(num, &bignum_num[1], num_len);
+	bignum_num[0] = num_len / 4;
+
+	dh_swap_bytes(exp, &bignum_exp[1], exp_len);
+	bignum_exp[0] = exp_len / 4;
+
+	dh_swap_bytes(mod, &bignum_mod[1], mod_len);
+	bignum_mod[0] = mod_len / 4;
+
+	result = dwc_modpow(mem_ctx, bignum_num, bignum_exp, bignum_mod);
+	if (!result) {
+		retval = -1;
+		goto dh_modpow_nomem;
+	}
+
+	dh_swap_bytes(&result[1], out, result[0] * 4);
+	dwc_free(mem_ctx, result);
+
+ dh_modpow_nomem:
+	dwc_free(mem_ctx, bignum_num);
+	dwc_free(mem_ctx, bignum_exp);
+	dwc_free(mem_ctx, bignum_mod);
+	return retval;
+}
+
+
+int dwc_dh_pk(void *mem_ctx, uint8_t nd, uint8_t *exp, uint8_t *pk, uint8_t *hash)
+{
+	int retval;
+	uint8_t m3[385];
+
+#ifndef DH_TEST_VECTORS
+	DWC_RANDOM_BYTES(exp, 32);
+#endif
+
+	/* Compute the pkd */
+	if ((retval = dwc_dh_modpow(mem_ctx, dh_g, 4,
+				    exp, 32,
+				    dh_p, 384, pk))) {
+		return retval;
+	}
+
+	m3[384] = nd;
+	DWC_MEMCPY(&m3[0], pk, 384);
+	DWC_SHA256(m3, 385, hash);
+
+	dh_dump("PK", pk, 384);
+	dh_dump("SHA-256(M3)", hash, 32);
+	return 0;
+}
+
+int dwc_dh_derive_keys(void *mem_ctx, uint8_t nd, uint8_t *pkh, uint8_t *pkd,
+		       uint8_t *exp, int is_host,
+		       char *dd, uint8_t *ck, uint8_t *kdk)
+{
+	int retval;
+	uint8_t mv[784];
+	uint8_t sha_result[32];
+	uint8_t dhkey[384];
+	uint8_t shared_secret[384];
+	char *message;
+	uint32_t vd;
+
+	uint8_t *pk;
+
+	if (is_host) {
+		pk = pkd;
+	}
+	else {
+		pk = pkh;
+	}
+
+	if ((retval = dwc_dh_modpow(mem_ctx, pk, 384,
+				    exp, 32,
+				    dh_p, 384, shared_secret))) {
+		return retval;
+	}
+	dh_dump("Shared Secret", shared_secret, 384);
+
+	DWC_SHA256(shared_secret, 384, dhkey);
+	dh_dump("DHKEY", dhkey, 384);
+
+	DWC_MEMCPY(&mv[0], pkd, 384);
+	DWC_MEMCPY(&mv[384], pkh, 384);
+	DWC_MEMCPY(&mv[768], "displayed digest", 16);
+	dh_dump("MV", mv, 784);
+
+	DWC_SHA256(mv, 784, sha_result);
+	dh_dump("SHA-256(MV)", sha_result, 32);
+	dh_dump("First 32-bits of SHA-256(MV)", sha_result, 4);
+
+	dh_swap_bytes(sha_result, &vd, 4);
+#ifdef DEBUG
+	DWC_PRINTF("Vd (decimal) = %d\n", vd);
+#endif
+
+	switch (nd) {
+	case 2:
+		vd = vd % 100;
+		DWC_SPRINTF(dd, "%02d", vd);
+		break;
+	case 3:
+		vd = vd % 1000;
+		DWC_SPRINTF(dd, "%03d", vd);
+		break;
+	case 4:
+		vd = vd % 10000;
+		DWC_SPRINTF(dd, "%04d", vd);
+		break;
+	}
+#ifdef DEBUG
+	DWC_PRINTF("Display Digits: %s\n", dd);
+#endif
+
+	message = "connection key";
+	DWC_HMAC_SHA256(message, DWC_STRLEN(message), dhkey, 32, sha_result);
+	dh_dump("HMAC(SHA-256, DHKey, connection key)", sha_result, 32);
+	DWC_MEMCPY(ck, sha_result, 16);
+
+	message = "key derivation key";
+	DWC_HMAC_SHA256(message, DWC_STRLEN(message), dhkey, 32, sha_result);
+	dh_dump("HMAC(SHA-256, DHKey, key derivation key)", sha_result, 32);
+	DWC_MEMCPY(kdk, sha_result, 32);
+
+	return 0;
+}
+
+
+#ifdef DH_TEST_VECTORS
+
+static __u8 dh_a[] = {
+	0x44, 0x00, 0x51, 0xd6,
+	0xf0, 0xb5, 0x5e, 0xa9,
+	0x67, 0xab, 0x31, 0xc6,
+	0x8a, 0x8b, 0x5e, 0x37,
+	0xd9, 0x10, 0xda, 0xe0,
+	0xe2, 0xd4, 0x59, 0xa4,
+	0x86, 0x45, 0x9c, 0xaa,
+	0xdf, 0x36, 0x75, 0x16,
+};
+
+static __u8 dh_b[] = {
+	0x5d, 0xae, 0xc7, 0x86,
+	0x79, 0x80, 0xa3, 0x24,
+	0x8c, 0xe3, 0x57, 0x8f,
+	0xc7, 0x5f, 0x1b, 0x0f,
+	0x2d, 0xf8, 0x9d, 0x30,
+	0x6f, 0xa4, 0x52, 0xcd,
+	0xe0, 0x7a, 0x04, 0x8a,
+	0xde, 0xd9, 0x26, 0x56,
+};
+
+void dwc_run_dh_test_vectors(void *mem_ctx)
+{
+	uint8_t pkd[384];
+	uint8_t pkh[384];
+	uint8_t hashd[32];
+	uint8_t hashh[32];
+	uint8_t ck[16];
+	uint8_t kdk[32];
+	char dd[5];
+
+	DWC_PRINTF("\n\n\nDH_TEST_VECTORS\n\n");
+
+	/* compute the PKd and SHA-256(PKd || Nd) */
+	DWC_PRINTF("Computing PKd\n");
+	dwc_dh_pk(mem_ctx, 2, dh_a, pkd, hashd);
+
+	/* compute the PKd and SHA-256(PKh || Nd) */
+	DWC_PRINTF("Computing PKh\n");
+	dwc_dh_pk(mem_ctx, 2, dh_b, pkh, hashh);
+
+	/* compute the dhkey */
+	dwc_dh_derive_keys(mem_ctx, 2, pkh, pkd, dh_a, 0, dd, ck, kdk);
+}
+#endif /* DH_TEST_VECTORS */
+
+#endif /* !CONFIG_MACH_IPMATE */
+
+#endif /* DWC_CRYPTOLIB */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_dh.h linux-rpi/drivers/usb/host/dwc_common_port/dwc_dh.h
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_dh.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_dh.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,106 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_dh.h $
+ * $Revision: #4 $
+ * $Date: 2010/09/28 $
+ * $Change: 1596182 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifndef _DWC_DH_H_
+#define _DWC_DH_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "dwc_os.h"
+
+/** @file
+ *
+ * This file defines the common functions on device and host for performing
+ * numeric association as defined in the WUSB spec.  They are only to be
+ * used internally by the DWC UWB modules. */
+
+extern int dwc_dh_sha256(uint8_t *message, uint32_t len, uint8_t *out);
+extern int dwc_dh_hmac_sha256(uint8_t *message, uint32_t messagelen,
+			      uint8_t *key, uint32_t keylen,
+			      uint8_t *out);
+extern int dwc_dh_modpow(void *mem_ctx, void *num, uint32_t num_len,
+			 void *exp, uint32_t exp_len,
+			 void *mod, uint32_t mod_len,
+			 void *out);
+
+/** Computes PKD or PKH, and SHA-256(PKd || Nd)
+ *
+ * PK = g^exp mod p.
+ *
+ * Input:
+ * Nd = Number of digits on the device.
+ *
+ * Output:
+ * exp = A 32-byte buffer to be filled with a randomly generated number.
+ *       used as either A or B.
+ * pk = A 384-byte buffer to be filled with the PKH or PKD.
+ * hash = A 32-byte buffer to be filled with SHA-256(PK || ND).
+ */
+extern int dwc_dh_pk(void *mem_ctx, uint8_t nd, uint8_t *exp, uint8_t *pkd, uint8_t *hash);
+
+/** Computes the DHKEY, and VD.
+ *
+ * If called from host, then it will comput DHKEY=PKD^exp % p.
+ * If called from device, then it will comput DHKEY=PKH^exp % p.
+ *
+ * Input:
+ * pkd = The PKD value.
+ * pkh = The PKH value.
+ * exp = The A value (if device) or B value (if host) generated in dwc_wudev_dh_pk.
+ * is_host = Set to non zero if a WUSB host is calling this function.
+ *
+ * Output:
+
+ * dd = A pointer to an buffer to be set to the displayed digits string to be shown
+ *      to the user.  This buffer should be at 5 bytes long to hold 4 digits plus a
+ *      null termination character.  This buffer can be used directly for display.
+ * ck = A 16-byte buffer to be filled with the CK.
+ * kdk = A 32-byte buffer to be filled with the KDK.
+ */
+extern int dwc_dh_derive_keys(void *mem_ctx, uint8_t nd, uint8_t *pkh, uint8_t *pkd,
+			      uint8_t *exp, int is_host,
+			      char *dd, uint8_t *ck, uint8_t *kdk);
+
+#ifdef DH_TEST_VECTORS
+extern void dwc_run_dh_test_vectors(void);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_DH_H_ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_list.h linux-rpi/drivers/usb/host/dwc_common_port/dwc_list.h
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_list.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_list.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,594 @@
+/*	$OpenBSD: queue.h,v 1.26 2004/05/04 16:59:32 grange Exp $	*/
+/*	$NetBSD: queue.h,v 1.11 1996/05/16 05:17:14 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)queue.h	8.5 (Berkeley) 8/20/94
+ */
+
+#ifndef _DWC_LIST_H_
+#define _DWC_LIST_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+ *
+ * This file defines linked list operations.  It is derived from BSD with
+ * only the MACRO names being prefixed with DWC_.  This is because a few of
+ * these names conflict with those on Linux.  For documentation on use, see the
+ * inline comments in the source code.  The original license for this source
+ * code applies and is preserved in the dwc_list.h source file.
+ */
+
+/*
+ * This file defines five types of data structures: singly-linked lists,
+ * lists, simple queues, tail queues, and circular queues.
+ *
+ *
+ * A singly-linked list is headed by a single forward pointer. The elements
+ * are singly linked for minimum space and pointer manipulation overhead at
+ * the expense of O(n) removal for arbitrary elements. New elements can be
+ * added to the list after an existing element or at the head of the list.
+ * Elements being removed from the head of the list should use the explicit
+ * macro for this purpose for optimum efficiency. A singly-linked list may
+ * only be traversed in the forward direction.  Singly-linked lists are ideal
+ * for applications with large datasets and few or no removals or for
+ * implementing a LIFO queue.
+ *
+ * A list is headed by a single forward pointer (or an array of forward
+ * pointers for a hash table header). The elements are doubly linked
+ * so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before
+ * or after an existing element or at the head of the list. A list
+ * may only be traversed in the forward direction.
+ *
+ * A simple queue is headed by a pair of pointers, one the head of the
+ * list and the other to the tail of the list. The elements are singly
+ * linked to save space, so elements can only be removed from the
+ * head of the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the
+ * list. A simple queue may only be traversed in the forward direction.
+ *
+ * A tail queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or
+ * after an existing element, at the head of the list, or at the end of
+ * the list. A tail queue may be traversed in either direction.
+ *
+ * A circle queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the list.
+ * A circle queue may be traversed in either direction, but has a more
+ * complex end of list detection.
+ *
+ * For details on the use of these macros, see the queue(3) manual page.
+ */
+
+/*
+ * Double-linked List.
+ */
+
+typedef struct dwc_list_link {
+	struct dwc_list_link *next;
+	struct dwc_list_link *prev;
+} dwc_list_link_t;
+
+#define DWC_LIST_INIT(link) do {	\
+	(link)->next = (link);		\
+	(link)->prev = (link);		\
+} while (0)
+
+#define DWC_LIST_FIRST(link)	((link)->next)
+#define DWC_LIST_LAST(link)	((link)->prev)
+#define DWC_LIST_END(link)	(link)
+#define DWC_LIST_NEXT(link)	((link)->next)
+#define DWC_LIST_PREV(link)	((link)->prev)
+#define DWC_LIST_EMPTY(link)	\
+	(DWC_LIST_FIRST(link) == DWC_LIST_END(link))
+#define DWC_LIST_ENTRY(link, type, field)			\
+	(type *)((uint8_t *)(link) - (size_t)(&((type *)0)->field))
+
+#if 0
+#define DWC_LIST_INSERT_HEAD(list, link) do {			\
+	(link)->next = (list)->next;				\
+	(link)->prev = (list);					\
+	(list)->next->prev = (link);				\
+	(list)->next = (link);					\
+} while (0)
+
+#define DWC_LIST_INSERT_TAIL(list, link) do {			\
+	(link)->next = (list);					\
+	(link)->prev = (list)->prev;				\
+	(list)->prev->next = (link);				\
+	(list)->prev = (link);					\
+} while (0)
+#else
+#define DWC_LIST_INSERT_HEAD(list, link) do {			\
+	dwc_list_link_t *__next__ = (list)->next;		\
+	__next__->prev = (link);				\
+	(link)->next = __next__;				\
+	(link)->prev = (list);					\
+	(list)->next = (link);					\
+} while (0)
+
+#define DWC_LIST_INSERT_TAIL(list, link) do {			\
+	dwc_list_link_t *__prev__ = (list)->prev;		\
+	(list)->prev = (link);					\
+	(link)->next = (list);					\
+	(link)->prev = __prev__;				\
+	__prev__->next = (link);				\
+} while (0)
+#endif
+
+#if 0
+static inline void __list_add(struct list_head *new,
+                              struct list_head *prev,
+                              struct list_head *next)
+{
+        next->prev = new;
+        new->next = next;
+        new->prev = prev;
+        prev->next = new;
+}
+
+static inline void list_add(struct list_head *new, struct list_head *head)
+{
+        __list_add(new, head, head->next);
+}
+
+static inline void list_add_tail(struct list_head *new, struct list_head *head)
+{
+        __list_add(new, head->prev, head);
+}
+
+static inline void __list_del(struct list_head * prev, struct list_head * next)
+{
+        next->prev = prev;
+        prev->next = next;
+}
+
+static inline void list_del(struct list_head *entry)
+{
+        __list_del(entry->prev, entry->next);
+        entry->next = LIST_POISON1;
+        entry->prev = LIST_POISON2;
+}
+#endif
+
+#define DWC_LIST_REMOVE(link) do {				\
+	(link)->next->prev = (link)->prev;			\
+	(link)->prev->next = (link)->next;			\
+} while (0)
+
+#define DWC_LIST_REMOVE_INIT(link) do {				\
+	DWC_LIST_REMOVE(link);					\
+	DWC_LIST_INIT(link);					\
+} while (0)
+
+#define DWC_LIST_MOVE_HEAD(list, link) do {			\
+	DWC_LIST_REMOVE(link);					\
+	DWC_LIST_INSERT_HEAD(list, link);			\
+} while (0)
+
+#define DWC_LIST_MOVE_TAIL(list, link) do {			\
+	DWC_LIST_REMOVE(link);					\
+	DWC_LIST_INSERT_TAIL(list, link);			\
+} while (0)
+
+#define DWC_LIST_FOREACH(var, list)				\
+	for((var) = DWC_LIST_FIRST(list);			\
+	    (var) != DWC_LIST_END(list);			\
+	    (var) = DWC_LIST_NEXT(var))
+
+#define DWC_LIST_FOREACH_SAFE(var, var2, list)			\
+	for((var) = DWC_LIST_FIRST(list), (var2) = DWC_LIST_NEXT(var);	\
+	    (var) != DWC_LIST_END(list);			\
+	    (var) = (var2), (var2) = DWC_LIST_NEXT(var2))
+
+#define DWC_LIST_FOREACH_REVERSE(var, list)			\
+	for((var) = DWC_LIST_LAST(list);			\
+	    (var) != DWC_LIST_END(list);			\
+	    (var) = DWC_LIST_PREV(var))
+
+/*
+ * Singly-linked List definitions.
+ */
+#define DWC_SLIST_HEAD(name, type)					\
+struct name {								\
+	struct type *slh_first;	/* first element */			\
+}
+
+#define DWC_SLIST_HEAD_INITIALIZER(head)				\
+	{ NULL }
+
+#define DWC_SLIST_ENTRY(type)						\
+struct {								\
+	struct type *sle_next;	/* next element */			\
+}
+
+/*
+ * Singly-linked List access methods.
+ */
+#define DWC_SLIST_FIRST(head)	((head)->slh_first)
+#define DWC_SLIST_END(head)		NULL
+#define DWC_SLIST_EMPTY(head)	(SLIST_FIRST(head) == SLIST_END(head))
+#define DWC_SLIST_NEXT(elm, field)	((elm)->field.sle_next)
+
+#define DWC_SLIST_FOREACH(var, head, field)				\
+	for((var) = SLIST_FIRST(head);					\
+	    (var) != SLIST_END(head);					\
+	    (var) = SLIST_NEXT(var, field))
+
+#define DWC_SLIST_FOREACH_PREVPTR(var, varp, head, field)		\
+	for((varp) = &SLIST_FIRST((head));				\
+	    ((var) = *(varp)) != SLIST_END(head);			\
+	    (varp) = &SLIST_NEXT((var), field))
+
+/*
+ * Singly-linked List functions.
+ */
+#define DWC_SLIST_INIT(head) {						\
+	SLIST_FIRST(head) = SLIST_END(head);				\
+}
+
+#define DWC_SLIST_INSERT_AFTER(slistelm, elm, field) do {		\
+	(elm)->field.sle_next = (slistelm)->field.sle_next;		\
+	(slistelm)->field.sle_next = (elm);				\
+} while (0)
+
+#define DWC_SLIST_INSERT_HEAD(head, elm, field) do {			\
+	(elm)->field.sle_next = (head)->slh_first;			\
+	(head)->slh_first = (elm);					\
+} while (0)
+
+#define DWC_SLIST_REMOVE_NEXT(head, elm, field) do {			\
+	(elm)->field.sle_next = (elm)->field.sle_next->field.sle_next;	\
+} while (0)
+
+#define DWC_SLIST_REMOVE_HEAD(head, field) do {				\
+	(head)->slh_first = (head)->slh_first->field.sle_next;		\
+} while (0)
+
+#define DWC_SLIST_REMOVE(head, elm, type, field) do {			\
+	if ((head)->slh_first == (elm)) {				\
+		SLIST_REMOVE_HEAD((head), field);			\
+	}								\
+	else {								\
+		struct type *curelm = (head)->slh_first;		\
+		while( curelm->field.sle_next != (elm) )		\
+			curelm = curelm->field.sle_next;		\
+		curelm->field.sle_next =				\
+		    curelm->field.sle_next->field.sle_next;		\
+	}								\
+} while (0)
+
+/*
+ * Simple queue definitions.
+ */
+#define DWC_SIMPLEQ_HEAD(name, type)					\
+struct name {								\
+	struct type *sqh_first;	/* first element */			\
+	struct type **sqh_last;	/* addr of last next element */		\
+}
+
+#define DWC_SIMPLEQ_HEAD_INITIALIZER(head)				\
+	{ NULL, &(head).sqh_first }
+
+#define DWC_SIMPLEQ_ENTRY(type)						\
+struct {								\
+	struct type *sqe_next;	/* next element */			\
+}
+
+/*
+ * Simple queue access methods.
+ */
+#define DWC_SIMPLEQ_FIRST(head)	    ((head)->sqh_first)
+#define DWC_SIMPLEQ_END(head)	    NULL
+#define DWC_SIMPLEQ_EMPTY(head)	    (SIMPLEQ_FIRST(head) == SIMPLEQ_END(head))
+#define DWC_SIMPLEQ_NEXT(elm, field)    ((elm)->field.sqe_next)
+
+#define DWC_SIMPLEQ_FOREACH(var, head, field)				\
+	for((var) = SIMPLEQ_FIRST(head);				\
+	    (var) != SIMPLEQ_END(head);					\
+	    (var) = SIMPLEQ_NEXT(var, field))
+
+/*
+ * Simple queue functions.
+ */
+#define DWC_SIMPLEQ_INIT(head) do {					\
+	(head)->sqh_first = NULL;					\
+	(head)->sqh_last = &(head)->sqh_first;				\
+} while (0)
+
+#define DWC_SIMPLEQ_INSERT_HEAD(head, elm, field) do {			\
+	if (((elm)->field.sqe_next = (head)->sqh_first) == NULL)	\
+		(head)->sqh_last = &(elm)->field.sqe_next;		\
+	(head)->sqh_first = (elm);					\
+} while (0)
+
+#define DWC_SIMPLEQ_INSERT_TAIL(head, elm, field) do {			\
+	(elm)->field.sqe_next = NULL;					\
+	*(head)->sqh_last = (elm);					\
+	(head)->sqh_last = &(elm)->field.sqe_next;			\
+} while (0)
+
+#define DWC_SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do {	\
+	if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
+		(head)->sqh_last = &(elm)->field.sqe_next;		\
+	(listelm)->field.sqe_next = (elm);				\
+} while (0)
+
+#define DWC_SIMPLEQ_REMOVE_HEAD(head, field) do {			\
+	if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
+		(head)->sqh_last = &(head)->sqh_first;			\
+} while (0)
+
+/*
+ * Tail queue definitions.
+ */
+#define DWC_TAILQ_HEAD(name, type)					\
+struct name {								\
+	struct type *tqh_first;	/* first element */			\
+	struct type **tqh_last;	/* addr of last next element */		\
+}
+
+#define DWC_TAILQ_HEAD_INITIALIZER(head)				\
+	{ NULL, &(head).tqh_first }
+
+#define DWC_TAILQ_ENTRY(type)						\
+struct {								\
+	struct type *tqe_next;	/* next element */			\
+	struct type **tqe_prev;	/* address of previous next element */	\
+}
+
+/*
+ * tail queue access methods
+ */
+#define DWC_TAILQ_FIRST(head)		((head)->tqh_first)
+#define DWC_TAILQ_END(head)		NULL
+#define DWC_TAILQ_NEXT(elm, field)	((elm)->field.tqe_next)
+#define DWC_TAILQ_LAST(head, headname)					\
+	(*(((struct headname *)((head)->tqh_last))->tqh_last))
+/* XXX */
+#define DWC_TAILQ_PREV(elm, headname, field)				\
+	(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
+#define DWC_TAILQ_EMPTY(head)						\
+	(DWC_TAILQ_FIRST(head) == DWC_TAILQ_END(head))
+
+#define DWC_TAILQ_FOREACH(var, head, field)				\
+	for ((var) = DWC_TAILQ_FIRST(head);				\
+	    (var) != DWC_TAILQ_END(head);				\
+	    (var) = DWC_TAILQ_NEXT(var, field))
+
+#define DWC_TAILQ_FOREACH_REVERSE(var, head, headname, field)		\
+	for ((var) = DWC_TAILQ_LAST(head, headname);			\
+	    (var) != DWC_TAILQ_END(head);				\
+	    (var) = DWC_TAILQ_PREV(var, headname, field))
+
+/*
+ * Tail queue functions.
+ */
+#define DWC_TAILQ_INIT(head) do {					\
+	(head)->tqh_first = NULL;					\
+	(head)->tqh_last = &(head)->tqh_first;				\
+} while (0)
+
+#define DWC_TAILQ_INSERT_HEAD(head, elm, field) do {			\
+	if (((elm)->field.tqe_next = (head)->tqh_first) != NULL)	\
+		(head)->tqh_first->field.tqe_prev =			\
+		    &(elm)->field.tqe_next;				\
+	else								\
+		(head)->tqh_last = &(elm)->field.tqe_next;		\
+	(head)->tqh_first = (elm);					\
+	(elm)->field.tqe_prev = &(head)->tqh_first;			\
+} while (0)
+
+#define DWC_TAILQ_INSERT_TAIL(head, elm, field) do {			\
+	(elm)->field.tqe_next = NULL;					\
+	(elm)->field.tqe_prev = (head)->tqh_last;			\
+	*(head)->tqh_last = (elm);					\
+	(head)->tqh_last = &(elm)->field.tqe_next;			\
+} while (0)
+
+#define DWC_TAILQ_INSERT_AFTER(head, listelm, elm, field) do {		\
+	if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
+		(elm)->field.tqe_next->field.tqe_prev =			\
+		    &(elm)->field.tqe_next;				\
+	else								\
+		(head)->tqh_last = &(elm)->field.tqe_next;		\
+	(listelm)->field.tqe_next = (elm);				\
+	(elm)->field.tqe_prev = &(listelm)->field.tqe_next;		\
+} while (0)
+
+#define DWC_TAILQ_INSERT_BEFORE(listelm, elm, field) do {		\
+	(elm)->field.tqe_prev = (listelm)->field.tqe_prev;		\
+	(elm)->field.tqe_next = (listelm);				\
+	*(listelm)->field.tqe_prev = (elm);				\
+	(listelm)->field.tqe_prev = &(elm)->field.tqe_next;		\
+} while (0)
+
+#define DWC_TAILQ_REMOVE(head, elm, field) do {				\
+	if (((elm)->field.tqe_next) != NULL)				\
+		(elm)->field.tqe_next->field.tqe_prev =			\
+		    (elm)->field.tqe_prev;				\
+	else								\
+		(head)->tqh_last = (elm)->field.tqe_prev;		\
+	*(elm)->field.tqe_prev = (elm)->field.tqe_next;			\
+} while (0)
+
+#define DWC_TAILQ_REPLACE(head, elm, elm2, field) do {			\
+	if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL)	\
+		(elm2)->field.tqe_next->field.tqe_prev =		\
+		    &(elm2)->field.tqe_next;				\
+	else								\
+		(head)->tqh_last = &(elm2)->field.tqe_next;		\
+	(elm2)->field.tqe_prev = (elm)->field.tqe_prev;			\
+	*(elm2)->field.tqe_prev = (elm2);				\
+} while (0)
+
+/*
+ * Circular queue definitions.
+ */
+#define DWC_CIRCLEQ_HEAD(name, type)					\
+struct name {								\
+	struct type *cqh_first;		/* first element */		\
+	struct type *cqh_last;		/* last element */		\
+}
+
+#define DWC_CIRCLEQ_HEAD_INITIALIZER(head)				\
+	{ DWC_CIRCLEQ_END(&head), DWC_CIRCLEQ_END(&head) }
+
+#define DWC_CIRCLEQ_ENTRY(type)						\
+struct {								\
+	struct type *cqe_next;		/* next element */		\
+	struct type *cqe_prev;		/* previous element */		\
+}
+
+/*
+ * Circular queue access methods
+ */
+#define DWC_CIRCLEQ_FIRST(head)		((head)->cqh_first)
+#define DWC_CIRCLEQ_LAST(head)		((head)->cqh_last)
+#define DWC_CIRCLEQ_END(head)		((void *)(head))
+#define DWC_CIRCLEQ_NEXT(elm, field)	((elm)->field.cqe_next)
+#define DWC_CIRCLEQ_PREV(elm, field)	((elm)->field.cqe_prev)
+#define DWC_CIRCLEQ_EMPTY(head)						\
+	(DWC_CIRCLEQ_FIRST(head) == DWC_CIRCLEQ_END(head))
+
+#define DWC_CIRCLEQ_EMPTY_ENTRY(elm, field) (((elm)->field.cqe_next == NULL) && ((elm)->field.cqe_prev == NULL))
+
+#define DWC_CIRCLEQ_FOREACH(var, head, field)				\
+	for((var) = DWC_CIRCLEQ_FIRST(head);				\
+	    (var) != DWC_CIRCLEQ_END(head);				\
+	    (var) = DWC_CIRCLEQ_NEXT(var, field))
+
+#define DWC_CIRCLEQ_FOREACH_SAFE(var, var2, head, field)			\
+	for((var) = DWC_CIRCLEQ_FIRST(head), var2 = DWC_CIRCLEQ_NEXT(var, field); \
+	    (var) != DWC_CIRCLEQ_END(head);					\
+	    (var) = var2, var2 = DWC_CIRCLEQ_NEXT(var, field))
+
+#define DWC_CIRCLEQ_FOREACH_REVERSE(var, head, field)			\
+	for((var) = DWC_CIRCLEQ_LAST(head);				\
+	    (var) != DWC_CIRCLEQ_END(head);				\
+	    (var) = DWC_CIRCLEQ_PREV(var, field))
+
+/*
+ * Circular queue functions.
+ */
+#define DWC_CIRCLEQ_INIT(head) do {					\
+	(head)->cqh_first = DWC_CIRCLEQ_END(head);			\
+	(head)->cqh_last = DWC_CIRCLEQ_END(head);			\
+} while (0)
+
+#define DWC_CIRCLEQ_INIT_ENTRY(elm, field) do {				\
+	(elm)->field.cqe_next = NULL;					\
+	(elm)->field.cqe_prev = NULL;					\
+} while (0)
+
+#define DWC_CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do {	\
+	(elm)->field.cqe_next = (listelm)->field.cqe_next;		\
+	(elm)->field.cqe_prev = (listelm);				\
+	if ((listelm)->field.cqe_next == DWC_CIRCLEQ_END(head))		\
+		(head)->cqh_last = (elm);				\
+	else								\
+		(listelm)->field.cqe_next->field.cqe_prev = (elm);	\
+	(listelm)->field.cqe_next = (elm);				\
+} while (0)
+
+#define DWC_CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do {	\
+	(elm)->field.cqe_next = (listelm);				\
+	(elm)->field.cqe_prev = (listelm)->field.cqe_prev;		\
+	if ((listelm)->field.cqe_prev == DWC_CIRCLEQ_END(head))		\
+		(head)->cqh_first = (elm);				\
+	else								\
+		(listelm)->field.cqe_prev->field.cqe_next = (elm);	\
+	(listelm)->field.cqe_prev = (elm);				\
+} while (0)
+
+#define DWC_CIRCLEQ_INSERT_HEAD(head, elm, field) do {			\
+	(elm)->field.cqe_next = (head)->cqh_first;			\
+	(elm)->field.cqe_prev = DWC_CIRCLEQ_END(head);			\
+	if ((head)->cqh_last == DWC_CIRCLEQ_END(head))			\
+		(head)->cqh_last = (elm);				\
+	else								\
+		(head)->cqh_first->field.cqe_prev = (elm);		\
+	(head)->cqh_first = (elm);					\
+} while (0)
+
+#define DWC_CIRCLEQ_INSERT_TAIL(head, elm, field) do {			\
+	(elm)->field.cqe_next = DWC_CIRCLEQ_END(head);			\
+	(elm)->field.cqe_prev = (head)->cqh_last;			\
+	if ((head)->cqh_first == DWC_CIRCLEQ_END(head))			\
+		(head)->cqh_first = (elm);				\
+	else								\
+		(head)->cqh_last->field.cqe_next = (elm);		\
+	(head)->cqh_last = (elm);					\
+} while (0)
+
+#define DWC_CIRCLEQ_REMOVE(head, elm, field) do {			\
+	if ((elm)->field.cqe_next == DWC_CIRCLEQ_END(head))		\
+		(head)->cqh_last = (elm)->field.cqe_prev;		\
+	else								\
+		(elm)->field.cqe_next->field.cqe_prev =			\
+		    (elm)->field.cqe_prev;				\
+	if ((elm)->field.cqe_prev == DWC_CIRCLEQ_END(head))		\
+		(head)->cqh_first = (elm)->field.cqe_next;		\
+	else								\
+		(elm)->field.cqe_prev->field.cqe_next =			\
+		    (elm)->field.cqe_next;				\
+} while (0)
+
+#define DWC_CIRCLEQ_REMOVE_INIT(head, elm, field) do {			\
+	DWC_CIRCLEQ_REMOVE(head, elm, field);				\
+	DWC_CIRCLEQ_INIT_ENTRY(elm, field);				\
+} while (0)
+
+#define DWC_CIRCLEQ_REPLACE(head, elm, elm2, field) do {		\
+	if (((elm2)->field.cqe_next = (elm)->field.cqe_next) ==		\
+	    DWC_CIRCLEQ_END(head))					\
+		(head).cqh_last = (elm2);				\
+	else								\
+		(elm2)->field.cqe_next->field.cqe_prev = (elm2);	\
+	if (((elm2)->field.cqe_prev = (elm)->field.cqe_prev) ==		\
+	    DWC_CIRCLEQ_END(head))					\
+		(head).cqh_first = (elm2);				\
+	else								\
+		(elm2)->field.cqe_prev->field.cqe_next = (elm2);	\
+} while (0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_LIST_H_ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_mem.c linux-rpi/drivers/usb/host/dwc_common_port/dwc_mem.c
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_mem.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_mem.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,245 @@
+/* Memory Debugging */
+#ifdef DWC_DEBUG_MEMORY
+
+#include "dwc_os.h"
+#include "dwc_list.h"
+
+struct allocation {
+	void *addr;
+	void *ctx;
+	char *func;
+	int line;
+	uint32_t size;
+	int dma;
+	DWC_CIRCLEQ_ENTRY(allocation) entry;
+};
+
+DWC_CIRCLEQ_HEAD(allocation_queue, allocation);
+
+struct allocation_manager {
+	void *mem_ctx;
+	struct allocation_queue allocations;
+
+	/* statistics */
+	int num;
+	int num_freed;
+	int num_active;
+	uint32_t total;
+	uint32_t cur;
+	uint32_t max;
+};
+
+static struct allocation_manager *manager = NULL;
+
+static int add_allocation(void *ctx, uint32_t size, char const *func, int line, void *addr,
+			  int dma)
+{
+	struct allocation *a;
+
+	DWC_ASSERT(manager != NULL, "manager not allocated");
+
+	a = __DWC_ALLOC_ATOMIC(manager->mem_ctx, sizeof(*a));
+	if (!a) {
+		return -DWC_E_NO_MEMORY;
+	}
+
+	a->func = __DWC_ALLOC_ATOMIC(manager->mem_ctx, DWC_STRLEN(func) + 1);
+	if (!a->func) {
+		__DWC_FREE(manager->mem_ctx, a);
+		return -DWC_E_NO_MEMORY;
+	}
+
+	DWC_MEMCPY(a->func, func, DWC_STRLEN(func) + 1);
+	a->addr = addr;
+	a->ctx = ctx;
+	a->line = line;
+	a->size = size;
+	a->dma = dma;
+	DWC_CIRCLEQ_INSERT_TAIL(&manager->allocations, a, entry);
+
+	/* Update stats */
+	manager->num++;
+	manager->num_active++;
+	manager->total += size;
+	manager->cur += size;
+
+	if (manager->max < manager->cur) {
+		manager->max = manager->cur;
+	}
+
+	return 0;
+}
+
+static struct allocation *find_allocation(void *ctx, void *addr)
+{
+	struct allocation *a;
+
+	DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
+		if (a->ctx == ctx && a->addr == addr) {
+			return a;
+		}
+	}
+
+	return NULL;
+}
+
+static void free_allocation(void *ctx, void *addr, char const *func, int line)
+{
+	struct allocation *a = find_allocation(ctx, addr);
+
+	if (!a) {
+		DWC_ASSERT(0,
+			   "Free of address %p that was never allocated or already freed %s:%d",
+			   addr, func, line);
+		return;
+	}
+
+	DWC_CIRCLEQ_REMOVE(&manager->allocations, a, entry);
+
+	manager->num_active--;
+	manager->num_freed++;
+	manager->cur -= a->size;
+	__DWC_FREE(manager->mem_ctx, a->func);
+	__DWC_FREE(manager->mem_ctx, a);
+}
+
+int dwc_memory_debug_start(void *mem_ctx)
+{
+	DWC_ASSERT(manager == NULL, "Memory debugging has already started\n");
+
+	if (manager) {
+		return -DWC_E_BUSY;
+	}
+
+	manager = __DWC_ALLOC(mem_ctx, sizeof(*manager));
+	if (!manager) {
+		return -DWC_E_NO_MEMORY;
+	}
+
+	DWC_CIRCLEQ_INIT(&manager->allocations);
+	manager->mem_ctx = mem_ctx;
+	manager->num = 0;
+	manager->num_freed = 0;
+	manager->num_active = 0;
+	manager->total = 0;
+	manager->cur = 0;
+	manager->max = 0;
+
+	return 0;
+}
+
+void dwc_memory_debug_stop(void)
+{
+	struct allocation *a;
+
+	dwc_memory_debug_report();
+
+	DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
+		DWC_ERROR("Memory leaked from %s:%d\n", a->func, a->line);
+		free_allocation(a->ctx, a->addr, NULL, -1);
+	}
+
+	__DWC_FREE(manager->mem_ctx, manager);
+}
+
+void dwc_memory_debug_report(void)
+{
+	struct allocation *a;
+
+	DWC_PRINTF("\n\n\n----------------- Memory Debugging Report -----------------\n\n");
+	DWC_PRINTF("Num Allocations = %d\n", manager->num);
+	DWC_PRINTF("Freed = %d\n", manager->num_freed);
+	DWC_PRINTF("Active = %d\n", manager->num_active);
+	DWC_PRINTF("Current Memory Used = %d\n", manager->cur);
+	DWC_PRINTF("Total Memory Used = %d\n", manager->total);
+	DWC_PRINTF("Maximum Memory Used at Once = %d\n", manager->max);
+	DWC_PRINTF("Unfreed allocations:\n");
+
+	DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
+		DWC_PRINTF("    addr=%p, size=%d from %s:%d, DMA=%d\n",
+			   a->addr, a->size, a->func, a->line, a->dma);
+	}
+}
+
+/* The replacement functions */
+void *dwc_alloc_debug(void *mem_ctx, uint32_t size, char const *func, int line)
+{
+	void *addr = __DWC_ALLOC(mem_ctx, size);
+
+	if (!addr) {
+		return NULL;
+	}
+
+	if (add_allocation(mem_ctx, size, func, line, addr, 0)) {
+		__DWC_FREE(mem_ctx, addr);
+		return NULL;
+	}
+
+	return addr;
+}
+
+void *dwc_alloc_atomic_debug(void *mem_ctx, uint32_t size, char const *func,
+			     int line)
+{
+	void *addr = __DWC_ALLOC_ATOMIC(mem_ctx, size);
+
+	if (!addr) {
+		return NULL;
+	}
+
+	if (add_allocation(mem_ctx, size, func, line, addr, 0)) {
+		__DWC_FREE(mem_ctx, addr);
+		return NULL;
+	}
+
+	return addr;
+}
+
+void dwc_free_debug(void *mem_ctx, void *addr, char const *func, int line)
+{
+	free_allocation(mem_ctx, addr, func, line);
+	__DWC_FREE(mem_ctx, addr);
+}
+
+void *dwc_dma_alloc_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr,
+			  char const *func, int line)
+{
+	void *addr = __DWC_DMA_ALLOC(dma_ctx, size, dma_addr);
+
+	if (!addr) {
+		return NULL;
+	}
+
+	if (add_allocation(dma_ctx, size, func, line, addr, 1)) {
+		__DWC_DMA_FREE(dma_ctx, size, addr, *dma_addr);
+		return NULL;
+	}
+
+	return addr;
+}
+
+void *dwc_dma_alloc_atomic_debug(void *dma_ctx, uint32_t size,
+				 dwc_dma_t *dma_addr, char const *func, int line)
+{
+	void *addr = __DWC_DMA_ALLOC_ATOMIC(dma_ctx, size, dma_addr);
+
+	if (!addr) {
+		return NULL;
+	}
+
+	if (add_allocation(dma_ctx, size, func, line, addr, 1)) {
+		__DWC_DMA_FREE(dma_ctx, size, addr, *dma_addr);
+		return NULL;
+	}
+
+	return addr;
+}
+
+void dwc_dma_free_debug(void *dma_ctx, uint32_t size, void *virt_addr,
+			dwc_dma_t dma_addr, char const *func, int line)
+{
+	free_allocation(dma_ctx, virt_addr, func, line);
+	__DWC_DMA_FREE(dma_ctx, size, virt_addr, dma_addr);
+}
+
+#endif /* DWC_DEBUG_MEMORY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_modpow.c linux-rpi/drivers/usb/host/dwc_common_port/dwc_modpow.c
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_modpow.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_modpow.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,636 @@
+/* Bignum routines adapted from PUTTY sources.  PuTTY copyright notice follows.
+ *
+ * PuTTY is copyright 1997-2007 Simon Tatham.
+ *
+ * Portions copyright Robert de Bath, Joris van Rantwijk, Delian
+ * Delchev, Andreas Schultz, Jeroen Massar, Wez Furlong, Nicolas Barry,
+ * Justin Bradford, Ben Harris, Malcolm Smith, Ahmad Khalifa, Markus
+ * Kuhn, and CORE SDI S.A.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE
+ * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#ifdef DWC_CRYPTOLIB
+
+#ifndef CONFIG_MACH_IPMATE
+
+#include "dwc_modpow.h"
+
+#define BIGNUM_INT_MASK  0xFFFFFFFFUL
+#define BIGNUM_TOP_BIT   0x80000000UL
+#define BIGNUM_INT_BITS  32
+
+
+static void *snmalloc(void *mem_ctx, size_t n, size_t size)
+{
+    void *p;
+    size *= n;
+    if (size == 0) size = 1;
+    p = dwc_alloc(mem_ctx, size);
+    return p;
+}
+
+#define snewn(ctx, n, type) ((type *)snmalloc((ctx), (n), sizeof(type)))
+#define sfree dwc_free
+
+/*
+ * Usage notes:
+ *  * Do not call the DIVMOD_WORD macro with expressions such as array
+ *    subscripts, as some implementations object to this (see below).
+ *  * Note that none of the division methods below will cope if the
+ *    quotient won't fit into BIGNUM_INT_BITS. Callers should be careful
+ *    to avoid this case.
+ *    If this condition occurs, in the case of the x86 DIV instruction,
+ *    an overflow exception will occur, which (according to a correspondent)
+ *    will manifest on Windows as something like
+ *      0xC0000095: Integer overflow
+ *    The C variant won't give the right answer, either.
+ */
+
+#define MUL_WORD(w1, w2) ((BignumDblInt)w1 * w2)
+
+#if defined __GNUC__ && defined __i386__
+#define DIVMOD_WORD(q, r, hi, lo, w) \
+    __asm__("div %2" : \
+	    "=d" (r), "=a" (q) : \
+	    "r" (w), "d" (hi), "a" (lo))
+#else
+#define DIVMOD_WORD(q, r, hi, lo, w) do { \
+    BignumDblInt n = (((BignumDblInt)hi) << BIGNUM_INT_BITS) | lo; \
+    q = n / w; \
+    r = n % w; \
+} while (0)
+#endif
+
+//    q = n / w;
+//    r = n % w;
+
+#define BIGNUM_INT_BYTES (BIGNUM_INT_BITS / 8)
+
+#define BIGNUM_INTERNAL
+
+static Bignum newbn(void *mem_ctx, int length)
+{
+    Bignum b = snewn(mem_ctx, length + 1, BignumInt);
+    //if (!b)
+    //abort();		       /* FIXME */
+    DWC_MEMSET(b, 0, (length + 1) * sizeof(*b));
+    b[0] = length;
+    return b;
+}
+
+void freebn(void *mem_ctx, Bignum b)
+{
+    /*
+     * Burn the evidence, just in case.
+     */
+    DWC_MEMSET(b, 0, sizeof(b[0]) * (b[0] + 1));
+    sfree(mem_ctx, b);
+}
+
+/*
+ * Compute c = a * b.
+ * Input is in the first len words of a and b.
+ * Result is returned in the first 2*len words of c.
+ */
+static void internal_mul(BignumInt *a, BignumInt *b,
+			 BignumInt *c, int len)
+{
+    int i, j;
+    BignumDblInt t;
+
+    for (j = 0; j < 2 * len; j++)
+	c[j] = 0;
+
+    for (i = len - 1; i >= 0; i--) {
+	t = 0;
+	for (j = len - 1; j >= 0; j--) {
+	    t += MUL_WORD(a[i], (BignumDblInt) b[j]);
+	    t += (BignumDblInt) c[i + j + 1];
+	    c[i + j + 1] = (BignumInt) t;
+	    t = t >> BIGNUM_INT_BITS;
+	}
+	c[i] = (BignumInt) t;
+    }
+}
+
+static void internal_add_shifted(BignumInt *number,
+				 unsigned n, int shift)
+{
+    int word = 1 + (shift / BIGNUM_INT_BITS);
+    int bshift = shift % BIGNUM_INT_BITS;
+    BignumDblInt addend;
+
+    addend = (BignumDblInt)n << bshift;
+
+    while (addend) {
+	addend += number[word];
+	number[word] = (BignumInt) addend & BIGNUM_INT_MASK;
+	addend >>= BIGNUM_INT_BITS;
+	word++;
+    }
+}
+
+/*
+ * Compute a = a % m.
+ * Input in first alen words of a and first mlen words of m.
+ * Output in first alen words of a
+ * (of which first alen-mlen words will be zero).
+ * The MSW of m MUST have its high bit set.
+ * Quotient is accumulated in the `quotient' array, which is a Bignum
+ * rather than the internal bigendian format. Quotient parts are shifted
+ * left by `qshift' before adding into quot.
+ */
+static void internal_mod(BignumInt *a, int alen,
+			 BignumInt *m, int mlen,
+			 BignumInt *quot, int qshift)
+{
+    BignumInt m0, m1;
+    unsigned int h;
+    int i, k;
+
+    m0 = m[0];
+    if (mlen > 1)
+	m1 = m[1];
+    else
+	m1 = 0;
+
+    for (i = 0; i <= alen - mlen; i++) {
+	BignumDblInt t;
+	unsigned int q, r, c, ai1;
+
+	if (i == 0) {
+	    h = 0;
+	} else {
+	    h = a[i - 1];
+	    a[i - 1] = 0;
+	}
+
+	if (i == alen - 1)
+	    ai1 = 0;
+	else
+	    ai1 = a[i + 1];
+
+	/* Find q = h:a[i] / m0 */
+	if (h >= m0) {
+	    /*
+	     * Special case.
+	     *
+	     * To illustrate it, suppose a BignumInt is 8 bits, and
+	     * we are dividing (say) A1:23:45:67 by A1:B2:C3. Then
+	     * our initial division will be 0xA123 / 0xA1, which
+	     * will give a quotient of 0x100 and a divide overflow.
+	     * However, the invariants in this division algorithm
+	     * are not violated, since the full number A1:23:... is
+	     * _less_ than the quotient prefix A1:B2:... and so the
+	     * following correction loop would have sorted it out.
+	     *
+	     * In this situation we set q to be the largest
+	     * quotient we _can_ stomach (0xFF, of course).
+	     */
+	    q = BIGNUM_INT_MASK;
+	} else {
+	    /* Macro doesn't want an array subscript expression passed
+	     * into it (see definition), so use a temporary. */
+	    BignumInt tmplo = a[i];
+	    DIVMOD_WORD(q, r, h, tmplo, m0);
+
+	    /* Refine our estimate of q by looking at
+	     h:a[i]:a[i+1] / m0:m1 */
+	    t = MUL_WORD(m1, q);
+	    if (t > ((BignumDblInt) r << BIGNUM_INT_BITS) + ai1) {
+		q--;
+		t -= m1;
+		r = (r + m0) & BIGNUM_INT_MASK;     /* overflow? */
+		if (r >= (BignumDblInt) m0 &&
+		    t > ((BignumDblInt) r << BIGNUM_INT_BITS) + ai1) q--;
+	    }
+	}
+
+	/* Subtract q * m from a[i...] */
+	c = 0;
+	for (k = mlen - 1; k >= 0; k--) {
+	    t = MUL_WORD(q, m[k]);
+	    t += c;
+	    c = (unsigned)(t >> BIGNUM_INT_BITS);
+	    if ((BignumInt) t > a[i + k])
+		c++;
+	    a[i + k] -= (BignumInt) t;
+	}
+
+	/* Add back m in case of borrow */
+	if (c != h) {
+	    t = 0;
+	    for (k = mlen - 1; k >= 0; k--) {
+		t += m[k];
+		t += a[i + k];
+		a[i + k] = (BignumInt) t;
+		t = t >> BIGNUM_INT_BITS;
+	    }
+	    q--;
+	}
+	if (quot)
+	    internal_add_shifted(quot, q, qshift + BIGNUM_INT_BITS * (alen - mlen - i));
+    }
+}
+
+/*
+ * Compute p % mod.
+ * The most significant word of mod MUST be non-zero.
+ * We assume that the result array is the same size as the mod array.
+ * We optionally write out a quotient if `quotient' is non-NULL.
+ * We can avoid writing out the result if `result' is NULL.
+ */
+void bigdivmod(void *mem_ctx, Bignum p, Bignum mod, Bignum result, Bignum quotient)
+{
+    BignumInt *n, *m;
+    int mshift;
+    int plen, mlen, i, j;
+
+    /* Allocate m of size mlen, copy mod to m */
+    /* We use big endian internally */
+    mlen = mod[0];
+    m = snewn(mem_ctx, mlen, BignumInt);
+    //if (!m)
+    //abort();		       /* FIXME */
+    for (j = 0; j < mlen; j++)
+	m[j] = mod[mod[0] - j];
+
+    /* Shift m left to make msb bit set */
+    for (mshift = 0; mshift < BIGNUM_INT_BITS-1; mshift++)
+	if ((m[0] << mshift) & BIGNUM_TOP_BIT)
+	    break;
+    if (mshift) {
+	for (i = 0; i < mlen - 1; i++)
+	    m[i] = (m[i] << mshift) | (m[i + 1] >> (BIGNUM_INT_BITS - mshift));
+	m[mlen - 1] = m[mlen - 1] << mshift;
+    }
+
+    plen = p[0];
+    /* Ensure plen > mlen */
+    if (plen <= mlen)
+	plen = mlen + 1;
+
+    /* Allocate n of size plen, copy p to n */
+    n = snewn(mem_ctx, plen, BignumInt);
+    //if (!n)
+    //abort();		       /* FIXME */
+    for (j = 0; j < plen; j++)
+	n[j] = 0;
+    for (j = 1; j <= (int)p[0]; j++)
+	n[plen - j] = p[j];
+
+    /* Main computation */
+    internal_mod(n, plen, m, mlen, quotient, mshift);
+
+    /* Fixup result in case the modulus was shifted */
+    if (mshift) {
+	for (i = plen - mlen - 1; i < plen - 1; i++)
+	    n[i] = (n[i] << mshift) | (n[i + 1] >> (BIGNUM_INT_BITS - mshift));
+	n[plen - 1] = n[plen - 1] << mshift;
+	internal_mod(n, plen, m, mlen, quotient, 0);
+	for (i = plen - 1; i >= plen - mlen; i--)
+	    n[i] = (n[i] >> mshift) | (n[i - 1] << (BIGNUM_INT_BITS - mshift));
+    }
+
+    /* Copy result to buffer */
+    if (result) {
+	for (i = 1; i <= (int)result[0]; i++) {
+	    int j = plen - i;
+	    result[i] = j >= 0 ? n[j] : 0;
+	}
+    }
+
+    /* Free temporary arrays */
+    for (i = 0; i < mlen; i++)
+	m[i] = 0;
+    sfree(mem_ctx, m);
+    for (i = 0; i < plen; i++)
+	n[i] = 0;
+    sfree(mem_ctx, n);
+}
+
+/*
+ * Simple remainder.
+ */
+Bignum bigmod(void *mem_ctx, Bignum a, Bignum b)
+{
+    Bignum r = newbn(mem_ctx, b[0]);
+    bigdivmod(mem_ctx, a, b, r, NULL);
+    return r;
+}
+
+/*
+ * Compute (base ^ exp) % mod.
+ */
+Bignum dwc_modpow(void *mem_ctx, Bignum base_in, Bignum exp, Bignum mod)
+{
+    BignumInt *a, *b, *n, *m;
+    int mshift;
+    int mlen, i, j;
+    Bignum base, result;
+
+    /*
+     * The most significant word of mod needs to be non-zero. It
+     * should already be, but let's make sure.
+     */
+    //assert(mod[mod[0]] != 0);
+
+    /*
+     * Make sure the base is smaller than the modulus, by reducing
+     * it modulo the modulus if not.
+     */
+    base = bigmod(mem_ctx, base_in, mod);
+
+    /* Allocate m of size mlen, copy mod to m */
+    /* We use big endian internally */
+    mlen = mod[0];
+    m = snewn(mem_ctx, mlen, BignumInt);
+    //if (!m)
+    //abort();		       /* FIXME */
+    for (j = 0; j < mlen; j++)
+	m[j] = mod[mod[0] - j];
+
+    /* Shift m left to make msb bit set */
+    for (mshift = 0; mshift < BIGNUM_INT_BITS - 1; mshift++)
+	if ((m[0] << mshift) & BIGNUM_TOP_BIT)
+	    break;
+    if (mshift) {
+	for (i = 0; i < mlen - 1; i++)
+	    m[i] =
+		(m[i] << mshift) | (m[i + 1] >>
+				    (BIGNUM_INT_BITS - mshift));
+	m[mlen - 1] = m[mlen - 1] << mshift;
+    }
+
+    /* Allocate n of size mlen, copy base to n */
+    n = snewn(mem_ctx, mlen, BignumInt);
+    //if (!n)
+    //abort();		       /* FIXME */
+    i = mlen - base[0];
+    for (j = 0; j < i; j++)
+	n[j] = 0;
+    for (j = 0; j < base[0]; j++)
+	n[i + j] = base[base[0] - j];
+
+    /* Allocate a and b of size 2*mlen. Set a = 1 */
+    a = snewn(mem_ctx, 2 * mlen, BignumInt);
+    //if (!a)
+    //abort();		       /* FIXME */
+    b = snewn(mem_ctx, 2 * mlen, BignumInt);
+    //if (!b)
+    //abort();		       /* FIXME */
+    for (i = 0; i < 2 * mlen; i++)
+	a[i] = 0;
+    a[2 * mlen - 1] = 1;
+
+    /* Skip leading zero bits of exp. */
+    i = 0;
+    j = BIGNUM_INT_BITS - 1;
+    while (i < exp[0] && (exp[exp[0] - i] & (1 << j)) == 0) {
+	j--;
+	if (j < 0) {
+	    i++;
+	    j = BIGNUM_INT_BITS - 1;
+	}
+    }
+
+    /* Main computation */
+    while (i < exp[0]) {
+	while (j >= 0) {
+	    internal_mul(a + mlen, a + mlen, b, mlen);
+	    internal_mod(b, mlen * 2, m, mlen, NULL, 0);
+	    if ((exp[exp[0] - i] & (1 << j)) != 0) {
+		internal_mul(b + mlen, n, a, mlen);
+		internal_mod(a, mlen * 2, m, mlen, NULL, 0);
+	    } else {
+		BignumInt *t;
+		t = a;
+		a = b;
+		b = t;
+	    }
+	    j--;
+	}
+	i++;
+	j = BIGNUM_INT_BITS - 1;
+    }
+
+    /* Fixup result in case the modulus was shifted */
+    if (mshift) {
+	for (i = mlen - 1; i < 2 * mlen - 1; i++)
+	    a[i] =
+		(a[i] << mshift) | (a[i + 1] >>
+				    (BIGNUM_INT_BITS - mshift));
+	a[2 * mlen - 1] = a[2 * mlen - 1] << mshift;
+	internal_mod(a, mlen * 2, m, mlen, NULL, 0);
+	for (i = 2 * mlen - 1; i >= mlen; i--)
+	    a[i] =
+		(a[i] >> mshift) | (a[i - 1] <<
+				    (BIGNUM_INT_BITS - mshift));
+    }
+
+    /* Copy result to buffer */
+    result = newbn(mem_ctx, mod[0]);
+    for (i = 0; i < mlen; i++)
+	result[result[0] - i] = a[i + mlen];
+    while (result[0] > 1 && result[result[0]] == 0)
+	result[0]--;
+
+    /* Free temporary arrays */
+    for (i = 0; i < 2 * mlen; i++)
+	a[i] = 0;
+    sfree(mem_ctx, a);
+    for (i = 0; i < 2 * mlen; i++)
+	b[i] = 0;
+    sfree(mem_ctx, b);
+    for (i = 0; i < mlen; i++)
+	m[i] = 0;
+    sfree(mem_ctx, m);
+    for (i = 0; i < mlen; i++)
+	n[i] = 0;
+    sfree(mem_ctx, n);
+
+    freebn(mem_ctx, base);
+
+    return result;
+}
+
+
+#ifdef UNITTEST
+
+static __u32 dh_p[] = {
+	96,
+	0xFFFFFFFF,
+	0xFFFFFFFF,
+	0xA93AD2CA,
+	0x4B82D120,
+	0xE0FD108E,
+	0x43DB5BFC,
+	0x74E5AB31,
+	0x08E24FA0,
+	0xBAD946E2,
+	0x770988C0,
+	0x7A615D6C,
+	0xBBE11757,
+	0x177B200C,
+	0x521F2B18,
+	0x3EC86A64,
+	0xD8760273,
+	0xD98A0864,
+	0xF12FFA06,
+	0x1AD2EE6B,
+	0xCEE3D226,
+	0x4A25619D,
+	0x1E8C94E0,
+	0xDB0933D7,
+	0xABF5AE8C,
+	0xA6E1E4C7,
+	0xB3970F85,
+	0x5D060C7D,
+	0x8AEA7157,
+	0x58DBEF0A,
+	0xECFB8504,
+	0xDF1CBA64,
+	0xA85521AB,
+	0x04507A33,
+	0xAD33170D,
+	0x8AAAC42D,
+	0x15728E5A,
+	0x98FA0510,
+	0x15D22618,
+	0xEA956AE5,
+	0x3995497C,
+	0x95581718,
+	0xDE2BCBF6,
+	0x6F4C52C9,
+	0xB5C55DF0,
+	0xEC07A28F,
+	0x9B2783A2,
+	0x180E8603,
+	0xE39E772C,
+	0x2E36CE3B,
+	0x32905E46,
+	0xCA18217C,
+	0xF1746C08,
+	0x4ABC9804,
+	0x670C354E,
+	0x7096966D,
+	0x9ED52907,
+	0x208552BB,
+	0x1C62F356,
+	0xDCA3AD96,
+	0x83655D23,
+	0xFD24CF5F,
+	0x69163FA8,
+	0x1C55D39A,
+	0x98DA4836,
+	0xA163BF05,
+	0xC2007CB8,
+	0xECE45B3D,
+	0x49286651,
+	0x7C4B1FE6,
+	0xAE9F2411,
+	0x5A899FA5,
+	0xEE386BFB,
+	0xF406B7ED,
+	0x0BFF5CB6,
+	0xA637ED6B,
+	0xF44C42E9,
+	0x625E7EC6,
+	0xE485B576,
+	0x6D51C245,
+	0x4FE1356D,
+	0xF25F1437,
+	0x302B0A6D,
+	0xCD3A431B,
+	0xEF9519B3,
+	0x8E3404DD,
+	0x514A0879,
+	0x3B139B22,
+	0x020BBEA6,
+	0x8A67CC74,
+	0x29024E08,
+	0x80DC1CD1,
+	0xC4C6628B,
+	0x2168C234,
+	0xC90FDAA2,
+	0xFFFFFFFF,
+	0xFFFFFFFF,
+};
+
+static __u32 dh_a[] = {
+	8,
+	0xdf367516,
+	0x86459caa,
+	0xe2d459a4,
+	0xd910dae0,
+	0x8a8b5e37,
+	0x67ab31c6,
+	0xf0b55ea9,
+	0x440051d6,
+};
+
+static __u32 dh_b[] = {
+	8,
+	0xded92656,
+	0xe07a048a,
+	0x6fa452cd,
+	0x2df89d30,
+	0xc75f1b0f,
+	0x8ce3578f,
+	0x7980a324,
+	0x5daec786,
+};
+
+static __u32 dh_g[] = {
+	1,
+	2,
+};
+
+int main(void)
+{
+	int i;
+	__u32 *k;
+	k = dwc_modpow(NULL, dh_g, dh_a, dh_p);
+
+	printf("\n\n");
+	for (i=0; i<k[0]; i++) {
+		__u32 word32 = k[k[0] - i];
+		__u16 l = word32 & 0xffff;
+		__u16 m = (word32 & 0xffff0000) >> 16;
+		printf("%04x %04x ", m, l);
+		if (!((i + 1)%13)) printf("\n");
+	}
+	printf("\n\n");
+
+	if ((k[0] == 0x60) && (k[1] == 0x28e490e5) && (k[0x60] == 0x5a0d3d4e)) {
+		printf("PASS\n\n");
+	}
+	else {
+		printf("FAIL\n\n");
+	}
+
+}
+
+#endif /* UNITTEST */
+
+#endif /* CONFIG_MACH_IPMATE */
+
+#endif /*DWC_CRYPTOLIB */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_modpow.h linux-rpi/drivers/usb/host/dwc_common_port/dwc_modpow.h
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_modpow.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_modpow.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,34 @@
+/*
+ * dwc_modpow.h
+ * See dwc_modpow.c for license and changes
+ */
+#ifndef _DWC_MODPOW_H
+#define _DWC_MODPOW_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "dwc_os.h"
+
+/** @file
+ *
+ * This file defines the module exponentiation function which is only used
+ * internally by the DWC UWB modules for calculation of PKs during numeric
+ * association.  The routine is taken from the PUTTY, an open source terminal
+ * emulator.  The PUTTY License is preserved in the dwc_modpow.c file.
+ *
+ */
+
+typedef uint32_t BignumInt;
+typedef uint64_t BignumDblInt;
+typedef BignumInt *Bignum;
+
+/* Compute modular exponentiaion */
+extern Bignum dwc_modpow(void *mem_ctx, Bignum base_in, Bignum exp, Bignum mod);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LINUX_BIGNUM_H */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_notifier.c linux-rpi/drivers/usb/host/dwc_common_port/dwc_notifier.c
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_notifier.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_notifier.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,319 @@
+#ifdef DWC_NOTIFYLIB
+
+#include "dwc_notifier.h"
+#include "dwc_list.h"
+
+typedef struct dwc_observer {
+	void *observer;
+	dwc_notifier_callback_t callback;
+	void *data;
+	char *notification;
+	DWC_CIRCLEQ_ENTRY(dwc_observer) list_entry;
+} observer_t;
+
+DWC_CIRCLEQ_HEAD(observer_queue, dwc_observer);
+
+typedef struct dwc_notifier {
+	void *mem_ctx;
+	void *object;
+	struct observer_queue observers;
+	DWC_CIRCLEQ_ENTRY(dwc_notifier) list_entry;
+} notifier_t;
+
+DWC_CIRCLEQ_HEAD(notifier_queue, dwc_notifier);
+
+typedef struct manager {
+	void *mem_ctx;
+	void *wkq_ctx;
+	dwc_workq_t *wq;
+//	dwc_mutex_t *mutex;
+	struct notifier_queue notifiers;
+} manager_t;
+
+static manager_t *manager = NULL;
+
+static int create_manager(void *mem_ctx, void *wkq_ctx)
+{
+	manager = dwc_alloc(mem_ctx, sizeof(manager_t));
+	if (!manager) {
+		return -DWC_E_NO_MEMORY;
+	}
+
+	DWC_CIRCLEQ_INIT(&manager->notifiers);
+
+	manager->wq = dwc_workq_alloc(wkq_ctx, "DWC Notification WorkQ");
+	if (!manager->wq) {
+		return -DWC_E_NO_MEMORY;
+	}
+
+	return 0;
+}
+
+static void free_manager(void)
+{
+	dwc_workq_free(manager->wq);
+
+	/* All notifiers must have unregistered themselves before this module
+	 * can be removed.  Hitting this assertion indicates a programmer
+	 * error. */
+	DWC_ASSERT(DWC_CIRCLEQ_EMPTY(&manager->notifiers),
+		   "Notification manager being freed before all notifiers have been removed");
+	dwc_free(manager->mem_ctx, manager);
+}
+
+#ifdef DEBUG
+static void dump_manager(void)
+{
+	notifier_t *n;
+	observer_t *o;
+
+	DWC_ASSERT(manager, "Notification manager not found");
+
+	DWC_DEBUG("List of all notifiers and observers:\n");
+	DWC_CIRCLEQ_FOREACH(n, &manager->notifiers, list_entry) {
+		DWC_DEBUG("Notifier %p has observers:\n", n->object);
+		DWC_CIRCLEQ_FOREACH(o, &n->observers, list_entry) {
+			DWC_DEBUG("    %p watching %s\n", o->observer, o->notification);
+		}
+	}
+}
+#else
+#define dump_manager(...)
+#endif
+
+static observer_t *alloc_observer(void *mem_ctx, void *observer, char *notification,
+				  dwc_notifier_callback_t callback, void *data)
+{
+	observer_t *new_observer = dwc_alloc(mem_ctx, sizeof(observer_t));
+
+	if (!new_observer) {
+		return NULL;
+	}
+
+	DWC_CIRCLEQ_INIT_ENTRY(new_observer, list_entry);
+	new_observer->observer = observer;
+	new_observer->notification = notification;
+	new_observer->callback = callback;
+	new_observer->data = data;
+	return new_observer;
+}
+
+static void free_observer(void *mem_ctx, observer_t *observer)
+{
+	dwc_free(mem_ctx, observer);
+}
+
+static notifier_t *alloc_notifier(void *mem_ctx, void *object)
+{
+	notifier_t *notifier;
+
+	if (!object) {
+		return NULL;
+	}
+
+	notifier = dwc_alloc(mem_ctx, sizeof(notifier_t));
+	if (!notifier) {
+		return NULL;
+	}
+
+	DWC_CIRCLEQ_INIT(&notifier->observers);
+	DWC_CIRCLEQ_INIT_ENTRY(notifier, list_entry);
+
+	notifier->mem_ctx = mem_ctx;
+	notifier->object = object;
+	return notifier;
+}
+
+static void free_notifier(notifier_t *notifier)
+{
+	observer_t *observer;
+
+	DWC_CIRCLEQ_FOREACH(observer, &notifier->observers, list_entry) {
+		free_observer(notifier->mem_ctx, observer);
+	}
+
+	dwc_free(notifier->mem_ctx, notifier);
+}
+
+static notifier_t *find_notifier(void *object)
+{
+	notifier_t *notifier;
+
+	DWC_ASSERT(manager, "Notification manager not found");
+
+	if (!object) {
+		return NULL;
+	}
+
+	DWC_CIRCLEQ_FOREACH(notifier, &manager->notifiers, list_entry) {
+		if (notifier->object == object) {
+			return notifier;
+		}
+	}
+
+	return NULL;
+}
+
+int dwc_alloc_notification_manager(void *mem_ctx, void *wkq_ctx)
+{
+	return create_manager(mem_ctx, wkq_ctx);
+}
+
+void dwc_free_notification_manager(void)
+{
+	free_manager();
+}
+
+dwc_notifier_t *dwc_register_notifier(void *mem_ctx, void *object)
+{
+	notifier_t *notifier;
+
+	DWC_ASSERT(manager, "Notification manager not found");
+
+	notifier = find_notifier(object);
+	if (notifier) {
+		DWC_ERROR("Notifier %p is already registered\n", object);
+		return NULL;
+	}
+
+	notifier = alloc_notifier(mem_ctx, object);
+	if (!notifier) {
+		return NULL;
+	}
+
+	DWC_CIRCLEQ_INSERT_TAIL(&manager->notifiers, notifier, list_entry);
+
+	DWC_INFO("Notifier %p registered", object);
+	dump_manager();
+
+	return notifier;
+}
+
+void dwc_unregister_notifier(dwc_notifier_t *notifier)
+{
+	DWC_ASSERT(manager, "Notification manager not found");
+
+	if (!DWC_CIRCLEQ_EMPTY(&notifier->observers)) {
+		observer_t *o;
+
+		DWC_ERROR("Notifier %p has active observers when removing\n", notifier->object);
+		DWC_CIRCLEQ_FOREACH(o, &notifier->observers, list_entry) {
+			DWC_DEBUGC("    %p watching %s\n", o->observer, o->notification);
+		}
+
+		DWC_ASSERT(DWC_CIRCLEQ_EMPTY(&notifier->observers),
+			   "Notifier %p has active observers when removing", notifier);
+	}
+
+	DWC_CIRCLEQ_REMOVE_INIT(&manager->notifiers, notifier, list_entry);
+	free_notifier(notifier);
+
+	DWC_INFO("Notifier unregistered");
+	dump_manager();
+}
+
+/* Add an observer to observe the notifier for a particular state, event, or notification. */
+int dwc_add_observer(void *observer, void *object, char *notification,
+		     dwc_notifier_callback_t callback, void *data)
+{
+	notifier_t *notifier = find_notifier(object);
+	observer_t *new_observer;
+
+	if (!notifier) {
+		DWC_ERROR("Notifier %p is not found when adding observer\n", object);
+		return -DWC_E_INVALID;
+	}
+
+	new_observer = alloc_observer(notifier->mem_ctx, observer, notification, callback, data);
+	if (!new_observer) {
+		return -DWC_E_NO_MEMORY;
+	}
+
+	DWC_CIRCLEQ_INSERT_TAIL(&notifier->observers, new_observer, list_entry);
+
+	DWC_INFO("Added observer %p to notifier %p observing notification %s, callback=%p, data=%p",
+		 observer, object, notification, callback, data);
+
+	dump_manager();
+	return 0;
+}
+
+int dwc_remove_observer(void *observer)
+{
+	notifier_t *n;
+
+	DWC_ASSERT(manager, "Notification manager not found");
+
+	DWC_CIRCLEQ_FOREACH(n, &manager->notifiers, list_entry) {
+		observer_t *o;
+		observer_t *o2;
+
+		DWC_CIRCLEQ_FOREACH_SAFE(o, o2, &n->observers, list_entry) {
+			if (o->observer == observer) {
+				DWC_CIRCLEQ_REMOVE_INIT(&n->observers, o, list_entry);
+				DWC_INFO("Removing observer %p from notifier %p watching notification %s:",
+					 o->observer, n->object, o->notification);
+				free_observer(n->mem_ctx, o);
+			}
+		}
+	}
+
+	dump_manager();
+	return 0;
+}
+
+typedef struct callback_data {
+	void *mem_ctx;
+	dwc_notifier_callback_t cb;
+	void *observer;
+	void *data;
+	void *object;
+	char *notification;
+	void *notification_data;
+} cb_data_t;
+
+static void cb_task(void *data)
+{
+	cb_data_t *cb = (cb_data_t *)data;
+
+	cb->cb(cb->object, cb->notification, cb->observer, cb->notification_data, cb->data);
+	dwc_free(cb->mem_ctx, cb);
+}
+
+void dwc_notify(dwc_notifier_t *notifier, char *notification, void *notification_data)
+{
+	observer_t *o;
+
+	DWC_ASSERT(manager, "Notification manager not found");
+
+	DWC_CIRCLEQ_FOREACH(o, &notifier->observers, list_entry) {
+		int len = DWC_STRLEN(notification);
+
+		if (DWC_STRLEN(o->notification) != len) {
+			continue;
+		}
+
+		if (DWC_STRNCMP(o->notification, notification, len) == 0) {
+			cb_data_t *cb_data = dwc_alloc(notifier->mem_ctx, sizeof(cb_data_t));
+
+			if (!cb_data) {
+				DWC_ERROR("Failed to allocate callback data\n");
+				return;
+			}
+
+			cb_data->mem_ctx = notifier->mem_ctx;
+			cb_data->cb = o->callback;
+			cb_data->observer = o->observer;
+			cb_data->data = o->data;
+			cb_data->object = notifier->object;
+			cb_data->notification = notification;
+			cb_data->notification_data = notification_data;
+			DWC_DEBUGC("Observer found %p for notification %s\n", o->observer, notification);
+			DWC_WORKQ_SCHEDULE(manager->wq, cb_task, cb_data,
+					   "Notify callback from %p for Notification %s, to observer %p",
+					   cb_data->object, notification, cb_data->observer);
+		}
+	}
+}
+
+#endif	/* DWC_NOTIFYLIB */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_notifier.h linux-rpi/drivers/usb/host/dwc_common_port/dwc_notifier.h
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_notifier.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_notifier.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,122 @@
+
+#ifndef __DWC_NOTIFIER_H__
+#define __DWC_NOTIFIER_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "dwc_os.h"
+
+/** @file
+ *
+ * A simple implementation of the Observer pattern.  Any "module" can
+ * register as an observer or notifier.  The notion of "module" is abstract and
+ * can mean anything used to identify either an observer or notifier.  Usually
+ * it will be a pointer to a data structure which contains some state, ie an
+ * object.
+ *
+ * Before any notifiers can be added, the global notification manager must be
+ * brought up with dwc_alloc_notification_manager().
+ * dwc_free_notification_manager() will bring it down and free all resources.
+ * These would typically be called upon module load and unload.  The
+ * notification manager is a single global instance that handles all registered
+ * observable modules and observers so this should be done only once.
+ *
+ * A module can be observable by using Notifications to publicize some general
+ * information about it's state or operation.  It does not care who listens, or
+ * even if anyone listens, or what they do with the information.  The observable
+ * modules do not need to know any information about it's observers or their
+ * interface, or their state or data.
+ *
+ * Any module can register to emit Notifications.  It should publish a list of
+ * notifications that it can emit and their behavior, such as when they will get
+ * triggered, and what information will be provided to the observer.  Then it
+ * should register itself as an observable module. See dwc_register_notifier().
+ *
+ * Any module can observe any observable, registered module, provided it has a
+ * handle to the other module and knows what notifications to observe.  See
+ * dwc_add_observer().
+ *
+ * A function of type dwc_notifier_callback_t is called whenever a notification
+ * is triggered with one or more observers observing it.  This function is
+ * called in it's own process so it may sleep or block if needed.  It is
+ * guaranteed to be called sometime after the notification has occurred and will
+ * be called once per each time the notification is triggered.  It will NOT be
+ * called in the same process context used to trigger the notification.
+ *
+ * @section Limitiations
+ *
+ * Keep in mind that Notifications that can be triggered in rapid sucession may
+ * schedule too many processes too handle.  Be aware of this limitation when
+ * designing to use notifications, and only add notifications for appropriate
+ * observable information.
+ *
+ * Also Notification callbacks are not synchronous.  If you need to synchronize
+ * the behavior between module/observer you must use other means.  And perhaps
+ * that will mean Notifications are not the proper solution.
+ */
+
+struct dwc_notifier;
+typedef struct dwc_notifier dwc_notifier_t;
+
+/** The callback function must be of this type.
+ *
+ * @param object This is the object that is being observed.
+ * @param notification This is the notification that was triggered.
+ * @param observer This is the observer
+ * @param notification_data This is notification-specific data that the notifier
+ * has included in this notification.  The value of this should be published in
+ * the documentation of the observable module with the notifications.
+ * @param user_data This is any custom data that the observer provided when
+ * adding itself as an observer to the notification. */
+typedef void (*dwc_notifier_callback_t)(void *object, char *notification, void *observer,
+					void *notification_data, void *user_data);
+
+/** Brings up the notification manager. */
+extern int dwc_alloc_notification_manager(void *mem_ctx, void *wkq_ctx);
+/** Brings down the notification manager. */
+extern void dwc_free_notification_manager(void);
+
+/** This function registers an observable module.  A dwc_notifier_t object is
+ * returned to the observable module.  This is an opaque object that is used by
+ * the observable module to trigger notifications.  This object should only be
+ * accessible to functions that are authorized to trigger notifications for this
+ * module.  Observers do not need this object. */
+extern dwc_notifier_t *dwc_register_notifier(void *mem_ctx, void *object);
+
+/** This function unregisters an observable module.  All observers have to be
+ * removed prior to unregistration. */
+extern void dwc_unregister_notifier(dwc_notifier_t *notifier);
+
+/** Add a module as an observer to the observable module.  The observable module
+ * needs to have previously registered with the notification manager.
+ *
+ * @param observer The observer module
+ * @param object The module to observe
+ * @param notification The notification to observe
+ * @param callback The callback function to call
+ * @param user_data Any additional user data to pass into the callback function */
+extern int dwc_add_observer(void *observer, void *object, char *notification,
+			    dwc_notifier_callback_t callback, void *user_data);
+
+/** Removes the specified observer from all notifications that it is currently
+ * observing. */
+extern int dwc_remove_observer(void *observer);
+
+/** This function triggers a Notification.  It should be called by the
+ * observable module, or any module or library which the observable module
+ * allows to trigger notification on it's behalf.  Such as the dwc_cc_t.
+ *
+ * dwc_notify is a non-blocking function.  Callbacks are scheduled called in
+ * their own process context for each trigger.  Callbacks can be blocking.
+ * dwc_notify can be called from interrupt context if needed.
+ *
+ */
+void dwc_notify(dwc_notifier_t *notifier, char *notification, void *notification_data);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __DWC_NOTIFIER_H__ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_os.h linux-rpi/drivers/usb/host/dwc_common_port/dwc_os.h
--- linux-3.18.10/drivers/usb/host/dwc_common_port/dwc_os.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/dwc_os.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,1276 @@
+/* =========================================================================
+ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_os.h $
+ * $Revision: #14 $
+ * $Date: 2010/11/04 $
+ * $Change: 1621695 $
+ *
+ * Synopsys Portability Library Software and documentation
+ * (hereinafter, "Software") is an Unsupported proprietary work of
+ * Synopsys, Inc. unless otherwise expressly agreed to in writing
+ * between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for
+ * Licensed Product with Synopsys or any supplement thereto. You are
+ * permitted to use and redistribute this Software in source and binary
+ * forms, with or without modification, provided that redistributions
+ * of source code must retain this notice. You may not view, use,
+ * disclose, copy or distribute this file or any information contained
+ * herein except pursuant to this license grant from Synopsys. If you
+ * do not agree with this notice, including the disclaimer below, then
+ * you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
+ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================= */
+#ifndef _DWC_OS_H_
+#define _DWC_OS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+ *
+ * DWC portability library, low level os-wrapper functions
+ *
+ */
+
+/* These basic types need to be defined by some OS header file or custom header
+ * file for your specific target architecture.
+ *
+ * uint8_t, int8_t, uint16_t, int16_t, uint32_t, int32_t, uint64_t, int64_t
+ *
+ * Any custom or alternate header file must be added and enabled here.
+ */
+
+#ifdef DWC_LINUX
+# include <linux/types.h>
+# ifdef CONFIG_DEBUG_MUTEXES
+#  include <linux/mutex.h>
+# endif
+# include <linux/spinlock.h>
+# include <linux/errno.h>
+# include <stdarg.h>
+#endif
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+# include <os_dep.h>
+#endif
+
+
+/** @name Primitive Types and Values */
+
+/** We define a boolean type for consistency.  Can be either YES or NO */
+typedef uint8_t dwc_bool_t;
+#define YES  1
+#define NO   0
+
+#ifdef DWC_LINUX
+
+/** @name Error Codes */
+#define DWC_E_INVALID		EINVAL
+#define DWC_E_NO_MEMORY		ENOMEM
+#define DWC_E_NO_DEVICE		ENODEV
+#define DWC_E_NOT_SUPPORTED	EOPNOTSUPP
+#define DWC_E_TIMEOUT		ETIMEDOUT
+#define DWC_E_BUSY		EBUSY
+#define DWC_E_AGAIN		EAGAIN
+#define DWC_E_RESTART		ERESTART
+#define DWC_E_ABORT		ECONNABORTED
+#define DWC_E_SHUTDOWN		ESHUTDOWN
+#define DWC_E_NO_DATA		ENODATA
+#define DWC_E_DISCONNECT	ECONNRESET
+#define DWC_E_UNKNOWN		EINVAL
+#define DWC_E_NO_STREAM_RES	ENOSR
+#define DWC_E_COMMUNICATION	ECOMM
+#define DWC_E_OVERFLOW		EOVERFLOW
+#define DWC_E_PROTOCOL		EPROTO
+#define DWC_E_IN_PROGRESS	EINPROGRESS
+#define DWC_E_PIPE		EPIPE
+#define DWC_E_IO		EIO
+#define DWC_E_NO_SPACE		ENOSPC
+
+#else
+
+/** @name Error Codes */
+#define DWC_E_INVALID		1001
+#define DWC_E_NO_MEMORY		1002
+#define DWC_E_NO_DEVICE		1003
+#define DWC_E_NOT_SUPPORTED	1004
+#define DWC_E_TIMEOUT		1005
+#define DWC_E_BUSY		1006
+#define DWC_E_AGAIN		1007
+#define DWC_E_RESTART		1008
+#define DWC_E_ABORT		1009
+#define DWC_E_SHUTDOWN		1010
+#define DWC_E_NO_DATA		1011
+#define DWC_E_DISCONNECT	2000
+#define DWC_E_UNKNOWN		3000
+#define DWC_E_NO_STREAM_RES	4001
+#define DWC_E_COMMUNICATION	4002
+#define DWC_E_OVERFLOW		4003
+#define DWC_E_PROTOCOL		4004
+#define DWC_E_IN_PROGRESS	4005
+#define DWC_E_PIPE		4006
+#define DWC_E_IO		4007
+#define DWC_E_NO_SPACE		4008
+
+#endif
+
+
+/** @name Tracing/Logging Functions
+ *
+ * These function provide the capability to add tracing, debugging, and error
+ * messages, as well exceptions as assertions.  The WUDEV uses these
+ * extensively.  These could be logged to the main console, the serial port, an
+ * internal buffer, etc.  These functions could also be no-op if they are too
+ * expensive on your system.  By default undefining the DEBUG macro already
+ * no-ops some of these functions. */
+
+/** Returns non-zero if in interrupt context. */
+extern dwc_bool_t DWC_IN_IRQ(void);
+#define dwc_in_irq DWC_IN_IRQ
+
+/** Returns "IRQ" if DWC_IN_IRQ is true. */
+static inline char *dwc_irq(void) {
+	return DWC_IN_IRQ() ? "IRQ" : "";
+}
+
+/** Returns non-zero if in bottom-half context. */
+extern dwc_bool_t DWC_IN_BH(void);
+#define dwc_in_bh DWC_IN_BH
+
+/** Returns "BH" if DWC_IN_BH is true. */
+static inline char *dwc_bh(void) {
+	return DWC_IN_BH() ? "BH" : "";
+}
+
+/**
+ * A vprintf() clone.  Just call vprintf if you've got it.
+ */
+extern void DWC_VPRINTF(char *format, va_list args);
+#define dwc_vprintf DWC_VPRINTF
+
+/**
+ * A vsnprintf() clone.  Just call vprintf if you've got it.
+ */
+extern int DWC_VSNPRINTF(char *str, int size, char *format, va_list args);
+#define dwc_vsnprintf DWC_VSNPRINTF
+
+/**
+ * printf() clone.  Just call printf if you've go it.
+ */
+extern void DWC_PRINTF(char *format, ...)
+/* This provides compiler level static checking of the parameters if you're
+ * using GCC. */
+#ifdef __GNUC__
+	__attribute__ ((format(printf, 1, 2)));
+#else
+	;
+#endif
+#define dwc_printf DWC_PRINTF
+
+/**
+ * sprintf() clone.  Just call sprintf if you've got it.
+ */
+extern int DWC_SPRINTF(char *string, char *format, ...)
+#ifdef __GNUC__
+	__attribute__ ((format(printf, 2, 3)));
+#else
+	;
+#endif
+#define dwc_sprintf DWC_SPRINTF
+
+/**
+ * snprintf() clone.  Just call snprintf if you've got it.
+ */
+extern int DWC_SNPRINTF(char *string, int size, char *format, ...)
+#ifdef __GNUC__
+	__attribute__ ((format(printf, 3, 4)));
+#else
+	;
+#endif
+#define dwc_snprintf DWC_SNPRINTF
+
+/**
+ * Prints a WARNING message.  On systems that don't differentiate between
+ * warnings and regular log messages, just print it.  Indicates that something
+ * may be wrong with the driver.  Works like printf().
+ *
+ * Use the DWC_WARN macro to call this function.
+ */
+extern void __DWC_WARN(char *format, ...)
+#ifdef __GNUC__
+	__attribute__ ((format(printf, 1, 2)));
+#else
+	;
+#endif
+
+/**
+ * Prints an error message.  On systems that don't differentiate between errors
+ * and regular log messages, just print it.  Indicates that something went wrong
+ * with the driver.  Works like printf().
+ *
+ * Use the DWC_ERROR macro to call this function.
+ */
+extern void __DWC_ERROR(char *format, ...)
+#ifdef __GNUC__
+	__attribute__ ((format(printf, 1, 2)));
+#else
+	;
+#endif
+
+/**
+ * Prints an exception error message and takes some user-defined action such as
+ * print out a backtrace or trigger a breakpoint.  Indicates that something went
+ * abnormally wrong with the driver such as programmer error, or other
+ * exceptional condition.  It should not be ignored so even on systems without
+ * printing capability, some action should be taken to notify the developer of
+ * it.  Works like printf().
+ */
+extern void DWC_EXCEPTION(char *format, ...)
+#ifdef __GNUC__
+	__attribute__ ((format(printf, 1, 2)));
+#else
+	;
+#endif
+#define dwc_exception DWC_EXCEPTION
+
+#ifndef DWC_OTG_DEBUG_LEV
+#define DWC_OTG_DEBUG_LEV 0
+#endif
+
+#ifdef DEBUG
+/**
+ * Prints out a debug message.  Used for logging/trace messages.
+ *
+ * Use the DWC_DEBUG macro to call this function
+ */
+extern void __DWC_DEBUG(char *format, ...)
+#ifdef __GNUC__
+	__attribute__ ((format(printf, 1, 2)));
+#else
+	;
+#endif
+#else
+#define __DWC_DEBUG printk
+#endif
+
+/**
+ * Prints out a Debug message.
+ */
+#define DWC_DEBUG(_format, _args...) __DWC_DEBUG("DEBUG:%s:%s: " _format "\n", \
+						 __func__, dwc_irq(), ## _args)
+#define dwc_debug DWC_DEBUG
+/**
+ * Prints out a Debug message if enabled at compile time.
+ */
+#if DWC_OTG_DEBUG_LEV > 0
+#define DWC_DEBUGC(_format, _args...) DWC_DEBUG(_format, ##_args )
+#else
+#define DWC_DEBUGC(_format, _args...)
+#endif
+#define dwc_debugc DWC_DEBUGC
+/**
+ * Prints out an informative message.
+ */
+#define DWC_INFO(_format, _args...) DWC_PRINTF("INFO:%s: " _format "\n", \
+					       dwc_irq(), ## _args)
+#define dwc_info DWC_INFO
+/**
+ * Prints out an informative message if enabled at compile time.
+ */
+#if DWC_OTG_DEBUG_LEV > 1
+#define DWC_INFOC(_format, _args...) DWC_INFO(_format, ##_args )
+#else
+#define DWC_INFOC(_format, _args...)
+#endif
+#define dwc_infoc DWC_INFOC
+/**
+ * Prints out a warning message.
+ */
+#define DWC_WARN(_format, _args...) __DWC_WARN("WARN:%s:%s:%d: " _format "\n", \
+					dwc_irq(), __func__, __LINE__, ## _args)
+#define dwc_warn DWC_WARN
+/**
+ * Prints out an error message.
+ */
+#define DWC_ERROR(_format, _args...) __DWC_ERROR("ERROR:%s:%s:%d: " _format "\n", \
+					dwc_irq(), __func__, __LINE__, ## _args)
+#define dwc_error DWC_ERROR
+
+#define DWC_PROTO_ERROR(_format, _args...) __DWC_WARN("ERROR:%s:%s:%d: " _format "\n", \
+						dwc_irq(), __func__, __LINE__, ## _args)
+#define dwc_proto_error DWC_PROTO_ERROR
+
+#ifdef DEBUG
+/** Prints out a exception error message if the _expr expression fails.  Disabled
+ * if DEBUG is not enabled. */
+#define DWC_ASSERT(_expr, _format, _args...) do { \
+	if (!(_expr)) { DWC_EXCEPTION("%s:%s:%d: " _format "\n", dwc_irq(), \
+				      __FILE__, __LINE__, ## _args); } \
+	} while (0)
+#else
+#define DWC_ASSERT(_x...)
+#endif
+#define dwc_assert DWC_ASSERT
+
+
+/** @name Byte Ordering
+ * The following functions are for conversions between processor's byte ordering
+ * and specific ordering you want.
+ */
+
+/** Converts 32 bit data in CPU byte ordering to little endian. */
+extern uint32_t DWC_CPU_TO_LE32(uint32_t *p);
+#define dwc_cpu_to_le32 DWC_CPU_TO_LE32
+
+/** Converts 32 bit data in CPU byte orderint to big endian. */
+extern uint32_t DWC_CPU_TO_BE32(uint32_t *p);
+#define dwc_cpu_to_be32 DWC_CPU_TO_BE32
+
+/** Converts 32 bit little endian data to CPU byte ordering. */
+extern uint32_t DWC_LE32_TO_CPU(uint32_t *p);
+#define dwc_le32_to_cpu DWC_LE32_TO_CPU
+
+/** Converts 32 bit big endian data to CPU byte ordering. */
+extern uint32_t DWC_BE32_TO_CPU(uint32_t *p);
+#define dwc_be32_to_cpu DWC_BE32_TO_CPU
+
+/** Converts 16 bit data in CPU byte ordering to little endian. */
+extern uint16_t DWC_CPU_TO_LE16(uint16_t *p);
+#define dwc_cpu_to_le16 DWC_CPU_TO_LE16
+
+/** Converts 16 bit data in CPU byte orderint to big endian. */
+extern uint16_t DWC_CPU_TO_BE16(uint16_t *p);
+#define dwc_cpu_to_be16 DWC_CPU_TO_BE16
+
+/** Converts 16 bit little endian data to CPU byte ordering. */
+extern uint16_t DWC_LE16_TO_CPU(uint16_t *p);
+#define dwc_le16_to_cpu DWC_LE16_TO_CPU
+
+/** Converts 16 bit bi endian data to CPU byte ordering. */
+extern uint16_t DWC_BE16_TO_CPU(uint16_t *p);
+#define dwc_be16_to_cpu DWC_BE16_TO_CPU
+
+
+/** @name Register Read/Write
+ *
+ * The following six functions should be implemented to read/write registers of
+ * 32-bit and 64-bit sizes.  All modules use this to read/write register values.
+ * The reg value is a pointer to the register calculated from the void *base
+ * variable passed into the driver when it is started.  */
+
+#ifdef DWC_LINUX
+/* Linux doesn't need any extra parameters for register read/write, so we
+ * just throw away the IO context parameter.
+ */
+/** Reads the content of a 32-bit register. */
+extern uint32_t DWC_READ_REG32(uint32_t volatile *reg);
+#define dwc_read_reg32(_ctx_,_reg_) DWC_READ_REG32(_reg_)
+
+/** Reads the content of a 64-bit register. */
+extern uint64_t DWC_READ_REG64(uint64_t volatile *reg);
+#define dwc_read_reg64(_ctx_,_reg_) DWC_READ_REG64(_reg_)
+
+/** Writes to a 32-bit register. */
+extern void DWC_WRITE_REG32(uint32_t volatile *reg, uint32_t value);
+#define dwc_write_reg32(_ctx_,_reg_,_val_) DWC_WRITE_REG32(_reg_, _val_)
+
+/** Writes to a 64-bit register. */
+extern void DWC_WRITE_REG64(uint64_t volatile *reg, uint64_t value);
+#define dwc_write_reg64(_ctx_,_reg_,_val_) DWC_WRITE_REG64(_reg_, _val_)
+
+/**
+ * Modify bit values in a register.  Using the
+ * algorithm: (reg_contents & ~clear_mask) | set_mask.
+ */
+extern void DWC_MODIFY_REG32(uint32_t volatile *reg, uint32_t clear_mask, uint32_t set_mask);
+#define dwc_modify_reg32(_ctx_,_reg_,_cmsk_,_smsk_) DWC_MODIFY_REG32(_reg_,_cmsk_,_smsk_)
+extern void DWC_MODIFY_REG64(uint64_t volatile *reg, uint64_t clear_mask, uint64_t set_mask);
+#define dwc_modify_reg64(_ctx_,_reg_,_cmsk_,_smsk_) DWC_MODIFY_REG64(_reg_,_cmsk_,_smsk_)
+
+#endif	/* DWC_LINUX */
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+typedef struct dwc_ioctx {
+	struct device *dev;
+	bus_space_tag_t iot;
+	bus_space_handle_t ioh;
+} dwc_ioctx_t;
+
+/** BSD needs two extra parameters for register read/write, so we pass
+ * them in using the IO context parameter.
+ */
+/** Reads the content of a 32-bit register. */
+extern uint32_t DWC_READ_REG32(void *io_ctx, uint32_t volatile *reg);
+#define dwc_read_reg32 DWC_READ_REG32
+
+/** Reads the content of a 64-bit register. */
+extern uint64_t DWC_READ_REG64(void *io_ctx, uint64_t volatile *reg);
+#define dwc_read_reg64 DWC_READ_REG64
+
+/** Writes to a 32-bit register. */
+extern void DWC_WRITE_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t value);
+#define dwc_write_reg32 DWC_WRITE_REG32
+
+/** Writes to a 64-bit register. */
+extern void DWC_WRITE_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t value);
+#define dwc_write_reg64 DWC_WRITE_REG64
+
+/**
+ * Modify bit values in a register.  Using the
+ * algorithm: (reg_contents & ~clear_mask) | set_mask.
+ */
+extern void DWC_MODIFY_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t clear_mask, uint32_t set_mask);
+#define dwc_modify_reg32 DWC_MODIFY_REG32
+extern void DWC_MODIFY_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t clear_mask, uint64_t set_mask);
+#define dwc_modify_reg64 DWC_MODIFY_REG64
+
+#endif	/* DWC_FREEBSD || DWC_NETBSD */
+
+/** @cond */
+
+/** @name Some convenience MACROS used internally.  Define DWC_DEBUG_REGS to log the
+ * register writes. */
+
+#ifdef DWC_LINUX
+
+# ifdef DWC_DEBUG_REGS
+
+#define dwc_define_read_write_reg_n(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg##_n(_container_type *container, int num) { \
+	return DWC_READ_REG32(&container->regs->_reg[num]); \
+} \
+static inline void dwc_write_##_reg##_n(_container_type *container, int num, uint32_t data) { \
+	DWC_DEBUG("WRITING %8s[%d]: %p: %08x", #_reg, num, \
+		  &(((uint32_t*)container->regs->_reg)[num]), data); \
+	DWC_WRITE_REG32(&(((uint32_t*)container->regs->_reg)[num]), data); \
+}
+
+#define dwc_define_read_write_reg(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg(_container_type *container) { \
+	return DWC_READ_REG32(&container->regs->_reg); \
+} \
+static inline void dwc_write_##_reg(_container_type *container, uint32_t data) { \
+	DWC_DEBUG("WRITING %11s: %p: %08x", #_reg, &container->regs->_reg, data); \
+	DWC_WRITE_REG32(&container->regs->_reg, data); \
+}
+
+# else	/* DWC_DEBUG_REGS */
+
+#define dwc_define_read_write_reg_n(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg##_n(_container_type *container, int num) { \
+	return DWC_READ_REG32(&container->regs->_reg[num]); \
+} \
+static inline void dwc_write_##_reg##_n(_container_type *container, int num, uint32_t data) { \
+	DWC_WRITE_REG32(&(((uint32_t*)container->regs->_reg)[num]), data); \
+}
+
+#define dwc_define_read_write_reg(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg(_container_type *container) { \
+	return DWC_READ_REG32(&container->regs->_reg); \
+} \
+static inline void dwc_write_##_reg(_container_type *container, uint32_t data) { \
+	DWC_WRITE_REG32(&container->regs->_reg, data); \
+}
+
+# endif	/* DWC_DEBUG_REGS */
+
+#endif	/* DWC_LINUX */
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+
+# ifdef DWC_DEBUG_REGS
+
+#define dwc_define_read_write_reg_n(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg##_n(void *io_ctx, _container_type *container, int num) { \
+	return DWC_READ_REG32(io_ctx, &container->regs->_reg[num]); \
+} \
+static inline void dwc_write_##_reg##_n(void *io_ctx, _container_type *container, int num, uint32_t data) { \
+	DWC_DEBUG("WRITING %8s[%d]: %p: %08x", #_reg, num, \
+		  &(((uint32_t*)container->regs->_reg)[num]), data); \
+	DWC_WRITE_REG32(io_ctx, &(((uint32_t*)container->regs->_reg)[num]), data); \
+}
+
+#define dwc_define_read_write_reg(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg(void *io_ctx, _container_type *container) { \
+	return DWC_READ_REG32(io_ctx, &container->regs->_reg); \
+} \
+static inline void dwc_write_##_reg(void *io_ctx, _container_type *container, uint32_t data) { \
+	DWC_DEBUG("WRITING %11s: %p: %08x", #_reg, &container->regs->_reg, data); \
+	DWC_WRITE_REG32(io_ctx, &container->regs->_reg, data); \
+}
+
+# else	/* DWC_DEBUG_REGS */
+
+#define dwc_define_read_write_reg_n(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg##_n(void *io_ctx, _container_type *container, int num) { \
+	return DWC_READ_REG32(io_ctx, &container->regs->_reg[num]); \
+} \
+static inline void dwc_write_##_reg##_n(void *io_ctx, _container_type *container, int num, uint32_t data) { \
+	DWC_WRITE_REG32(io_ctx, &(((uint32_t*)container->regs->_reg)[num]), data); \
+}
+
+#define dwc_define_read_write_reg(_reg,_container_type) \
+static inline uint32_t dwc_read_##_reg(void *io_ctx, _container_type *container) { \
+	return DWC_READ_REG32(io_ctx, &container->regs->_reg); \
+} \
+static inline void dwc_write_##_reg(void *io_ctx, _container_type *container, uint32_t data) { \
+	DWC_WRITE_REG32(io_ctx, &container->regs->_reg, data); \
+}
+
+# endif	/* DWC_DEBUG_REGS */
+
+#endif	/* DWC_FREEBSD || DWC_NETBSD */
+
+/** @endcond */
+
+
+#ifdef DWC_CRYPTOLIB
+/** @name Crypto Functions
+ *
+ * These are the low-level cryptographic functions used by the driver. */
+
+/** Perform AES CBC */
+extern int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out);
+#define dwc_aes_cbc DWC_AES_CBC
+
+/** Fill the provided buffer with random bytes.  These should be cryptographic grade random numbers. */
+extern void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length);
+#define dwc_random_bytes DWC_RANDOM_BYTES
+
+/** Perform the SHA-256 hash function */
+extern int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out);
+#define dwc_sha256 DWC_SHA256
+
+/** Calculated the HMAC-SHA256 */
+extern int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t *out);
+#define dwc_hmac_sha256 DWC_HMAC_SHA256
+
+#endif	/* DWC_CRYPTOLIB */
+
+
+/** @name Memory Allocation
+ *
+ * These function provide access to memory allocation.  There are only 2 DMA
+ * functions and 3 Regular memory functions that need to be implemented.  None
+ * of the memory debugging routines need to be implemented.  The allocation
+ * routines all ZERO the contents of the memory.
+ *
+ * Defining DWC_DEBUG_MEMORY turns on memory debugging and statistic gathering.
+ * This checks for memory leaks, keeping track of alloc/free pairs.  It also
+ * keeps track of how much memory the driver is using at any given time. */
+
+#define DWC_PAGE_SIZE 4096
+#define DWC_PAGE_OFFSET(addr) (((uint32_t)addr) & 0xfff)
+#define DWC_PAGE_ALIGNED(addr) ((((uint32_t)addr) & 0xfff) == 0)
+
+#define DWC_INVALID_DMA_ADDR 0x0
+
+#ifdef DWC_LINUX
+/** Type for a DMA address */
+typedef dma_addr_t dwc_dma_t;
+#endif
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+typedef bus_addr_t dwc_dma_t;
+#endif
+
+#ifdef DWC_FREEBSD
+typedef struct dwc_dmactx {
+	struct device *dev;
+	bus_dma_tag_t dma_tag;
+	bus_dmamap_t dma_map;
+	bus_addr_t dma_paddr;
+	void *dma_vaddr;
+} dwc_dmactx_t;
+#endif
+
+#ifdef DWC_NETBSD
+typedef struct dwc_dmactx {
+	struct device *dev;
+	bus_dma_tag_t dma_tag;
+	bus_dmamap_t dma_map;
+	bus_dma_segment_t segs[1];
+	int nsegs;
+	bus_addr_t dma_paddr;
+	void *dma_vaddr;
+} dwc_dmactx_t;
+#endif
+
+/* @todo these functions will be added in the future */
+#if 0
+/**
+ * Creates a DMA pool from which you can allocate DMA buffers.  Buffers
+ * allocated from this pool will be guaranteed to meet the size, alignment, and
+ * boundary requirements specified.
+ *
+ * @param[in] size Specifies the size of the buffers that will be allocated from
+ * this pool.
+ * @param[in] align Specifies the byte alignment requirements of the buffers
+ * allocated from this pool.  Must be a power of 2.
+ * @param[in] boundary Specifies the N-byte boundary that buffers allocated from
+ * this pool must not cross.
+ *
+ * @returns A pointer to an internal opaque structure which is not to be
+ * accessed outside of these library functions.  Use this handle to specify
+ * which pools to allocate/free DMA buffers from and also to destroy the pool,
+ * when you are done with it.
+ */
+extern dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size, uint32_t align, uint32_t boundary);
+
+/**
+ * Destroy a DMA pool.  All buffers allocated from that pool must be freed first.
+ */
+extern void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool);
+
+/**
+ * Allocate a buffer from the specified DMA pool and zeros its contents.
+ */
+extern void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr);
+
+/**
+ * Free a previously allocated buffer from the DMA pool.
+ */
+extern void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr);
+#endif
+
+/** Allocates a DMA capable buffer and zeroes its contents. */
+extern void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr);
+
+/** Allocates a DMA capable buffer and zeroes its contents in atomic contest */
+extern void *__DWC_DMA_ALLOC_ATOMIC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr);
+
+/** Frees a previously allocated buffer. */
+extern void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr);
+
+/** Allocates a block of memory and zeroes its contents. */
+extern void *__DWC_ALLOC(void *mem_ctx, uint32_t size);
+
+/** Allocates a block of memory and zeroes its contents, in an atomic manner
+ * which can be used inside interrupt context.  The size should be sufficiently
+ * small, a few KB at most, such that failures are not likely to occur.  Can just call
+ * __DWC_ALLOC if it is atomic. */
+extern void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size);
+
+/** Frees a previously allocated buffer. */
+extern void __DWC_FREE(void *mem_ctx, void *addr);
+
+#ifndef DWC_DEBUG_MEMORY
+
+#define DWC_ALLOC(_size_) __DWC_ALLOC(NULL, _size_)
+#define DWC_ALLOC_ATOMIC(_size_) __DWC_ALLOC_ATOMIC(NULL, _size_)
+#define DWC_FREE(_addr_) __DWC_FREE(NULL, _addr_)
+
+# ifdef DWC_LINUX
+#define DWC_DMA_ALLOC(_size_,_dma_) __DWC_DMA_ALLOC(NULL, _size_, _dma_)
+#define DWC_DMA_ALLOC_ATOMIC(_size_,_dma_) __DWC_DMA_ALLOC_ATOMIC(NULL, _size_,_dma_)
+#define DWC_DMA_FREE(_size_,_virt_,_dma_) __DWC_DMA_FREE(NULL, _size_, _virt_, _dma_)
+# endif
+
+# if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+#define DWC_DMA_ALLOC __DWC_DMA_ALLOC
+#define DWC_DMA_FREE __DWC_DMA_FREE
+# endif
+extern void *dwc_dma_alloc_atomic_debug(uint32_t size, dwc_dma_t *dma_addr, char const *func, int line);
+
+#else	/* DWC_DEBUG_MEMORY */
+
+extern void *dwc_alloc_debug(void *mem_ctx, uint32_t size, char const *func, int line);
+extern void *dwc_alloc_atomic_debug(void *mem_ctx, uint32_t size, char const *func, int line);
+extern void dwc_free_debug(void *mem_ctx, void *addr, char const *func, int line);
+extern void *dwc_dma_alloc_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr,
+				 char const *func, int line);
+extern void *dwc_dma_alloc_atomic_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr,
+				char const *func, int line);
+extern void dwc_dma_free_debug(void *dma_ctx, uint32_t size, void *virt_addr,
+			       dwc_dma_t dma_addr, char const *func, int line);
+
+extern int dwc_memory_debug_start(void *mem_ctx);
+extern void dwc_memory_debug_stop(void);
+extern void dwc_memory_debug_report(void);
+
+#define DWC_ALLOC(_size_) dwc_alloc_debug(NULL, _size_, __func__, __LINE__)
+#define DWC_ALLOC_ATOMIC(_size_) dwc_alloc_atomic_debug(NULL, _size_, \
+							__func__, __LINE__)
+#define DWC_FREE(_addr_) dwc_free_debug(NULL, _addr_, __func__, __LINE__)
+
+# ifdef DWC_LINUX
+#define DWC_DMA_ALLOC(_size_,_dma_) dwc_dma_alloc_debug(NULL, _size_, \
+						_dma_, __func__, __LINE__)
+#define DWC_DMA_ALLOC_ATOMIC(_size_,_dma_) dwc_dma_alloc_atomic_debug(NULL, _size_, \
+						_dma_, __func__, __LINE__)
+#define DWC_DMA_FREE(_size_,_virt_,_dma_) dwc_dma_free_debug(NULL, _size_, \
+						_virt_, _dma_, __func__, __LINE__)
+# endif
+
+# if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+#define DWC_DMA_ALLOC(_ctx_,_size_,_dma_) dwc_dma_alloc_debug(_ctx_, _size_, \
+						_dma_, __func__, __LINE__)
+#define DWC_DMA_FREE(_ctx_,_size_,_virt_,_dma_) dwc_dma_free_debug(_ctx_, _size_, \
+						 _virt_, _dma_, __func__, __LINE__)
+# endif
+
+#endif /* DWC_DEBUG_MEMORY */
+
+#define dwc_alloc(_ctx_,_size_) DWC_ALLOC(_size_)
+#define dwc_alloc_atomic(_ctx_,_size_) DWC_ALLOC_ATOMIC(_size_)
+#define dwc_free(_ctx_,_addr_) DWC_FREE(_addr_)
+
+#ifdef DWC_LINUX
+/* Linux doesn't need any extra parameters for DMA buffer allocation, so we
+ * just throw away the DMA context parameter.
+ */
+#define dwc_dma_alloc(_ctx_,_size_,_dma_) DWC_DMA_ALLOC(_size_, _dma_)
+#define dwc_dma_alloc_atomic(_ctx_,_size_,_dma_) DWC_DMA_ALLOC_ATOMIC(_size_, _dma_)
+#define dwc_dma_free(_ctx_,_size_,_virt_,_dma_) DWC_DMA_FREE(_size_, _virt_, _dma_)
+#endif
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+/** BSD needs several extra parameters for DMA buffer allocation, so we pass
+ * them in using the DMA context parameter.
+ */
+#define dwc_dma_alloc DWC_DMA_ALLOC
+#define dwc_dma_free DWC_DMA_FREE
+#endif
+
+
+/** @name Memory and String Processing */
+
+/** memset() clone */
+extern void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size);
+#define dwc_memset DWC_MEMSET
+
+/** memcpy() clone */
+extern void *DWC_MEMCPY(void *dest, void const *src, uint32_t size);
+#define dwc_memcpy DWC_MEMCPY
+
+/** memmove() clone */
+extern void *DWC_MEMMOVE(void *dest, void *src, uint32_t size);
+#define dwc_memmove DWC_MEMMOVE
+
+/** memcmp() clone */
+extern int DWC_MEMCMP(void *m1, void *m2, uint32_t size);
+#define dwc_memcmp DWC_MEMCMP
+
+/** strcmp() clone */
+extern int DWC_STRCMP(void *s1, void *s2);
+#define dwc_strcmp DWC_STRCMP
+
+/** strncmp() clone */
+extern int DWC_STRNCMP(void *s1, void *s2, uint32_t size);
+#define dwc_strncmp DWC_STRNCMP
+
+/** strlen() clone, for NULL terminated ASCII strings */
+extern int DWC_STRLEN(char const *str);
+#define dwc_strlen DWC_STRLEN
+
+/** strcpy() clone, for NULL terminated ASCII strings */
+extern char *DWC_STRCPY(char *to, const char *from);
+#define dwc_strcpy DWC_STRCPY
+
+/** strdup() clone.  If you wish to use memory allocation debugging, this
+ * implementation of strdup should use the DWC_* memory routines instead of
+ * calling a predefined strdup.  Otherwise the memory allocated by this routine
+ * will not be seen by the debugging routines. */
+extern char *DWC_STRDUP(char const *str);
+#define dwc_strdup(_ctx_,_str_) DWC_STRDUP(_str_)
+
+/** NOT an atoi() clone.  Read the description carefully.  Returns an integer
+ * converted from the string str in base 10 unless the string begins with a "0x"
+ * in which case it is base 16.  String must be a NULL terminated sequence of
+ * ASCII characters and may optionally begin with whitespace, a + or -, and a
+ * "0x" prefix if base 16.  The remaining characters must be valid digits for
+ * the number and end with a NULL character.  If any invalid characters are
+ * encountered or it returns with a negative error code and the results of the
+ * conversion are undefined.  On sucess it returns 0.  Overflow conditions are
+ * undefined.  An example implementation using atoi() can be referenced from the
+ * Linux implementation. */
+extern int DWC_ATOI(const char *str, int32_t *value);
+#define dwc_atoi DWC_ATOI
+
+/** Same as above but for unsigned. */
+extern int DWC_ATOUI(const char *str, uint32_t *value);
+#define dwc_atoui DWC_ATOUI
+
+#ifdef DWC_UTFLIB
+/** This routine returns a UTF16LE unicode encoded string from a UTF8 string. */
+extern int DWC_UTF8_TO_UTF16LE(uint8_t const *utf8string, uint16_t *utf16string, unsigned len);
+#define dwc_utf8_to_utf16le DWC_UTF8_TO_UTF16LE
+#endif
+
+
+/** @name Wait queues
+ *
+ * Wait queues provide a means of synchronizing between threads or processes.  A
+ * process can block on a waitq if some condition is not true, waiting for it to
+ * become true.  When the waitq is triggered all waiting process will get
+ * unblocked and the condition will be check again.  Waitqs should be triggered
+ * every time a condition can potentially change.*/
+struct dwc_waitq;
+
+/** Type for a waitq */
+typedef struct dwc_waitq dwc_waitq_t;
+
+/** The type of waitq condition callback function.  This is called every time
+ * condition is evaluated. */
+typedef int (*dwc_waitq_condition_t)(void *data);
+
+/** Allocate a waitq */
+extern dwc_waitq_t *DWC_WAITQ_ALLOC(void);
+#define dwc_waitq_alloc(_ctx_) DWC_WAITQ_ALLOC()
+
+/** Free a waitq */
+extern void DWC_WAITQ_FREE(dwc_waitq_t *wq);
+#define dwc_waitq_free DWC_WAITQ_FREE
+
+/** Check the condition and if it is false, block on the waitq.  When unblocked, check the
+ * condition again.  The function returns when the condition becomes true.  The return value
+ * is 0 on condition true, DWC_WAITQ_ABORTED on abort or killed, or DWC_WAITQ_UNKNOWN on error. */
+extern int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data);
+#define dwc_waitq_wait DWC_WAITQ_WAIT
+
+/** Check the condition and if it is false, block on the waitq.  When unblocked,
+ * check the condition again.  The function returns when the condition become
+ * true or the timeout has passed.  The return value is 0 on condition true or
+ * DWC_TIMED_OUT on timeout, or DWC_WAITQ_ABORTED, or DWC_WAITQ_UNKNOWN on
+ * error. */
+extern int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
+				      void *data, int32_t msecs);
+#define dwc_waitq_wait_timeout DWC_WAITQ_WAIT_TIMEOUT
+
+/** Trigger a waitq, unblocking all processes.  This should be called whenever a condition
+ * has potentially changed. */
+extern void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq);
+#define dwc_waitq_trigger DWC_WAITQ_TRIGGER
+
+/** Unblock all processes waiting on the waitq with an ABORTED result. */
+extern void DWC_WAITQ_ABORT(dwc_waitq_t *wq);
+#define dwc_waitq_abort DWC_WAITQ_ABORT
+
+
+/** @name Threads
+ *
+ * A thread must be explicitly stopped.  It must check DWC_THREAD_SHOULD_STOP
+ * whenever it is woken up, and then return.  The DWC_THREAD_STOP function
+ * returns the value from the thread.
+ */
+
+struct dwc_thread;
+
+/** Type for a thread */
+typedef struct dwc_thread dwc_thread_t;
+
+/** The thread function */
+typedef int (*dwc_thread_function_t)(void *data);
+
+/** Create a thread and start it running the thread_function.  Returns a handle
+ * to the thread */
+extern dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data);
+#define dwc_thread_run(_ctx_,_func_,_name_,_data_) DWC_THREAD_RUN(_func_, _name_, _data_)
+
+/** Stops a thread.  Return the value returned by the thread.  Or will return
+ * DWC_ABORT if the thread never started. */
+extern int DWC_THREAD_STOP(dwc_thread_t *thread);
+#define dwc_thread_stop DWC_THREAD_STOP
+
+/** Signifies to the thread that it must stop. */
+#ifdef DWC_LINUX
+/* Linux doesn't need any parameters for kthread_should_stop() */
+extern dwc_bool_t DWC_THREAD_SHOULD_STOP(void);
+#define dwc_thread_should_stop(_thrd_) DWC_THREAD_SHOULD_STOP()
+
+/* No thread_exit function in Linux */
+#define dwc_thread_exit(_thrd_)
+#endif
+
+#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
+/** BSD needs the thread pointer for kthread_suspend_check() */
+extern dwc_bool_t DWC_THREAD_SHOULD_STOP(dwc_thread_t *thread);
+#define dwc_thread_should_stop DWC_THREAD_SHOULD_STOP
+
+/** The thread must call this to exit. */
+extern void DWC_THREAD_EXIT(dwc_thread_t *thread);
+#define dwc_thread_exit DWC_THREAD_EXIT
+#endif
+
+
+/** @name Work queues
+ *
+ * Workqs are used to queue a callback function to be called at some later time,
+ * in another thread. */
+struct dwc_workq;
+
+/** Type for a workq */
+typedef struct dwc_workq dwc_workq_t;
+
+/** The type of the callback function to be called. */
+typedef void (*dwc_work_callback_t)(void *data);
+
+/** Allocate a workq */
+extern dwc_workq_t *DWC_WORKQ_ALLOC(char *name);
+#define dwc_workq_alloc(_ctx_,_name_) DWC_WORKQ_ALLOC(_name_)
+
+/** Free a workq.  All work must be completed before being freed. */
+extern void DWC_WORKQ_FREE(dwc_workq_t *workq);
+#define dwc_workq_free DWC_WORKQ_FREE
+
+/** Schedule a callback on the workq, passing in data.  The function will be
+ * scheduled at some later time. */
+extern void DWC_WORKQ_SCHEDULE(dwc_workq_t *workq, dwc_work_callback_t cb,
+			       void *data, char *format, ...)
+#ifdef __GNUC__
+	__attribute__ ((format(printf, 4, 5)));
+#else
+	;
+#endif
+#define dwc_workq_schedule DWC_WORKQ_SCHEDULE
+
+/** Schedule a callback on the workq, that will be called until at least
+ * given number miliseconds have passed. */
+extern void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *workq, dwc_work_callback_t cb,
+				       void *data, uint32_t time, char *format, ...)
+#ifdef __GNUC__
+	__attribute__ ((format(printf, 5, 6)));
+#else
+	;
+#endif
+#define dwc_workq_schedule_delayed DWC_WORKQ_SCHEDULE_DELAYED
+
+/** The number of processes in the workq */
+extern int DWC_WORKQ_PENDING(dwc_workq_t *workq);
+#define dwc_workq_pending DWC_WORKQ_PENDING
+
+/** Blocks until all the work in the workq is complete or timed out.  Returns <
+ * 0 on timeout. */
+extern int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout);
+#define dwc_workq_wait_work_done DWC_WORKQ_WAIT_WORK_DONE
+
+
+/** @name Tasklets
+ *
+ */
+struct dwc_tasklet;
+
+/** Type for a tasklet */
+typedef struct dwc_tasklet dwc_tasklet_t;
+
+/** The type of the callback function to be called */
+typedef void (*dwc_tasklet_callback_t)(void *data);
+
+/** Allocates a tasklet */
+extern dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data);
+#define dwc_task_alloc(_ctx_,_name_,_cb_,_data_) DWC_TASK_ALLOC(_name_, _cb_, _data_)
+
+/** Frees a tasklet */
+extern void DWC_TASK_FREE(dwc_tasklet_t *task);
+#define dwc_task_free DWC_TASK_FREE
+
+/** Schedules a tasklet to run */
+extern void DWC_TASK_SCHEDULE(dwc_tasklet_t *task);
+#define dwc_task_schedule DWC_TASK_SCHEDULE
+
+extern void DWC_TASK_HI_SCHEDULE(dwc_tasklet_t *task);
+#define dwc_task_hi_schedule DWC_TASK_HI_SCHEDULE
+
+/** @name Timer
+ *
+ * Callbacks must be small and atomic.
+ */
+struct dwc_timer;
+
+/** Type for a timer */
+typedef struct dwc_timer dwc_timer_t;
+
+/** The type of the callback function to be called */
+typedef void (*dwc_timer_callback_t)(void *data);
+
+/** Allocates a timer */
+extern dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data);
+#define dwc_timer_alloc(_ctx_,_name_,_cb_,_data_) DWC_TIMER_ALLOC(_name_,_cb_,_data_)
+
+/** Frees a timer */
+extern void DWC_TIMER_FREE(dwc_timer_t *timer);
+#define dwc_timer_free DWC_TIMER_FREE
+
+/** Schedules the timer to run at time ms from now.  And will repeat at every
+ * repeat_interval msec therafter
+ *
+ * Modifies a timer that is still awaiting execution to a new expiration time.
+ * The mod_time is added to the old time.  */
+extern void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time);
+#define dwc_timer_schedule DWC_TIMER_SCHEDULE
+
+/** Disables the timer from execution. */
+extern void DWC_TIMER_CANCEL(dwc_timer_t *timer);
+#define dwc_timer_cancel DWC_TIMER_CANCEL
+
+
+/** @name Spinlocks
+ *
+ * These locks are used when the work between the lock/unlock is atomic and
+ * short.  Interrupts are also disabled during the lock/unlock and thus they are
+ * suitable to lock between interrupt/non-interrupt context.  They also lock
+ * between processes if you have multiple CPUs or Preemption.  If you don't have
+ * multiple CPUS or Preemption, then the you can simply implement the
+ * DWC_SPINLOCK and DWC_SPINUNLOCK to disable and enable interrupts.  Because
+ * the work between the lock/unlock is atomic, the process context will never
+ * change, and so you never have to lock between processes.  */
+
+struct dwc_spinlock;
+
+/** Type for a spinlock */
+typedef struct dwc_spinlock dwc_spinlock_t;
+
+/** Type for the 'flags' argument to spinlock funtions */
+typedef unsigned long dwc_irqflags_t;
+
+/** Returns an initialized lock variable.  This function should allocate and
+ * initialize the OS-specific data structure used for locking.  This data
+ * structure is to be used for the DWC_LOCK and DWC_UNLOCK functions and should
+ * be freed by the DWC_FREE_LOCK when it is no longer used.
+ *
+ * For Linux Spinlock Debugging make it macro because the debugging routines use
+ * the symbol name to determine recursive locking. Using a wrapper function
+ * makes it falsely think recursive locking occurs. */
+#if defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK)
+#define DWC_SPINLOCK_ALLOC_LINUX_DEBUG(lock) ({ \
+	lock = DWC_ALLOC(sizeof(spinlock_t)); \
+	if (lock) { \
+		spin_lock_init((spinlock_t *)lock); \
+	} \
+})
+#else
+extern dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void);
+#define dwc_spinlock_alloc(_ctx_) DWC_SPINLOCK_ALLOC()
+#endif
+
+/** Frees an initialized lock variable. */
+extern void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock);
+#define dwc_spinlock_free(_ctx_,_lock_) DWC_SPINLOCK_FREE(_lock_)
+
+/** Disables interrupts and blocks until it acquires the lock.
+ *
+ * @param lock Pointer to the spinlock.
+ * @param flags Unsigned long for irq flags storage.
+ */
+extern void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags);
+#define dwc_spinlock_irqsave DWC_SPINLOCK_IRQSAVE
+
+/** Re-enables the interrupt and releases the lock.
+ *
+ * @param lock Pointer to the spinlock.
+ * @param flags Unsigned long for irq flags storage.  Must be the same as was
+ * passed into DWC_LOCK.
+ */
+extern void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags);
+#define dwc_spinunlock_irqrestore DWC_SPINUNLOCK_IRQRESTORE
+
+/** Blocks until it acquires the lock.
+ *
+ * @param lock Pointer to the spinlock.
+ */
+extern void DWC_SPINLOCK(dwc_spinlock_t *lock);
+#define dwc_spinlock DWC_SPINLOCK
+
+/** Releases the lock.
+ *
+ * @param lock Pointer to the spinlock.
+ */
+extern void DWC_SPINUNLOCK(dwc_spinlock_t *lock);
+#define dwc_spinunlock DWC_SPINUNLOCK
+
+
+/** @name Mutexes
+ *
+ * Unlike spinlocks Mutexes lock only between processes and the work between the
+ * lock/unlock CAN block, therefore it CANNOT be called from interrupt context.
+ */
+
+struct dwc_mutex;
+
+/** Type for a mutex */
+typedef struct dwc_mutex dwc_mutex_t;
+
+/* For Linux Mutex Debugging make it inline because the debugging routines use
+ * the symbol to determine recursive locking.  This makes it falsely think
+ * recursive locking occurs. */
+#if defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES)
+#define DWC_MUTEX_ALLOC_LINUX_DEBUG(__mutexp) ({ \
+	__mutexp = (dwc_mutex_t *)DWC_ALLOC(sizeof(struct mutex)); \
+	mutex_init((struct mutex *)__mutexp); \
+})
+#endif
+
+/** Allocate a mutex */
+extern dwc_mutex_t *DWC_MUTEX_ALLOC(void);
+#define dwc_mutex_alloc(_ctx_) DWC_MUTEX_ALLOC()
+
+/* For memory leak debugging when using Linux Mutex Debugging */
+#if defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES)
+#define DWC_MUTEX_FREE(__mutexp) do { \
+	mutex_destroy((struct mutex *)__mutexp); \
+	DWC_FREE(__mutexp); \
+} while(0)
+#else
+/** Free a mutex */
+extern void DWC_MUTEX_FREE(dwc_mutex_t *mutex);
+#define dwc_mutex_free(_ctx_,_mutex_) DWC_MUTEX_FREE(_mutex_)
+#endif
+
+/** Lock a mutex */
+extern void DWC_MUTEX_LOCK(dwc_mutex_t *mutex);
+#define dwc_mutex_lock DWC_MUTEX_LOCK
+
+/** Non-blocking lock returns 1 on successful lock. */
+extern int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex);
+#define dwc_mutex_trylock DWC_MUTEX_TRYLOCK
+
+/** Unlock a mutex */
+extern void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex);
+#define dwc_mutex_unlock DWC_MUTEX_UNLOCK
+
+
+/** @name Time */
+
+/** Microsecond delay.
+ *
+ * @param usecs  Microseconds to delay.
+ */
+extern void DWC_UDELAY(uint32_t usecs);
+#define dwc_udelay DWC_UDELAY
+
+/** Millisecond delay.
+ *
+ * @param msecs  Milliseconds to delay.
+ */
+extern void DWC_MDELAY(uint32_t msecs);
+#define dwc_mdelay DWC_MDELAY
+
+/** Non-busy waiting.
+ * Sleeps for specified number of milliseconds.
+ *
+ * @param msecs Milliseconds to sleep.
+ */
+extern void DWC_MSLEEP(uint32_t msecs);
+#define dwc_msleep DWC_MSLEEP
+
+/**
+ * Returns number of milliseconds since boot.
+ */
+extern uint32_t DWC_TIME(void);
+#define dwc_time DWC_TIME
+
+
+
+
+/* @mainpage DWC Portability and Common Library
+ *
+ * This is the documentation for the DWC Portability and Common Library.
+ *
+ * @section intro Introduction
+ *
+ * The DWC Portability library consists of wrapper calls and data structures to
+ * all low-level functions which are typically provided by the OS.  The WUDEV
+ * driver uses only these functions.  In order to port the WUDEV driver, only
+ * the functions in this library need to be re-implemented, with the same
+ * behavior as documented here.
+ *
+ * The Common library consists of higher level functions, which rely only on
+ * calling the functions from the DWC Portability library.  These common
+ * routines are shared across modules.  Some of the common libraries need to be
+ * used directly by the driver programmer when porting WUDEV.  Such as the
+ * parameter and notification libraries.
+ *
+ * @section low Portability Library OS Wrapper Functions
+ *
+ * Any function starting with DWC and in all CAPS is a low-level OS-wrapper that
+ * needs to be implemented when porting, for example DWC_MUTEX_ALLOC().  All of
+ * these functions are included in the dwc_os.h file.
+ *
+ * There are many functions here covering a wide array of OS services.  Please
+ * see dwc_os.h for details, and implementation notes for each function.
+ *
+ * @section common Common Library Functions
+ *
+ * Any function starting with dwc and in all lowercase is a common library
+ * routine.  These functions have a portable implementation and do not need to
+ * be reimplemented when porting.  The common routines can be used by any
+ * driver, and some must be used by the end user to control the drivers.  For
+ * example, you must use the Parameter common library in order to set the
+ * parameters in the WUDEV module.
+ *
+ * The common libraries consist of the following:
+ *
+ * - Connection Contexts - Used internally and can be used by end-user.  See dwc_cc.h
+ * - Parameters - Used internally and can be used by end-user.  See dwc_params.h
+ * - Notifications - Used internally and can be used by end-user.  See dwc_notifier.h
+ * - Lists - Used internally and can be used by end-user.  See dwc_list.h
+ * - Memory Debugging - Used internally and can be used by end-user.  See dwc_os.h
+ * - Modpow - Used internally only.  See dwc_modpow.h
+ * - DH - Used internally only.  See dwc_dh.h
+ * - Crypto - Used internally only.  See dwc_crypto.h
+ *
+ *
+ * @section prereq Prerequistes For dwc_os.h
+ * @subsection types Data Types
+ *
+ * The dwc_os.h file assumes that several low-level data types are pre defined for the
+ * compilation environment.  These data types are:
+ *
+ * - uint8_t - unsigned 8-bit data type
+ * - int8_t - signed 8-bit data type
+ * - uint16_t - unsigned 16-bit data type
+ * - int16_t - signed 16-bit data type
+ * - uint32_t - unsigned 32-bit data type
+ * - int32_t - signed 32-bit data type
+ * - uint64_t - unsigned 64-bit data type
+ * - int64_t - signed 64-bit data type
+ *
+ * Ensure that these are defined before using dwc_os.h.  The easiest way to do
+ * that is to modify the top of the file to include the appropriate header.
+ * This is already done for the Linux environment.  If the DWC_LINUX macro is
+ * defined, the correct header will be added.  A standard header <stdint.h> is
+ * also used for environments where standard C headers are available.
+ *
+ * @subsection stdarg Variable Arguments
+ *
+ * Variable arguments are provided by a standard C header <stdarg.h>.  it is
+ * available in Both the Linux and ANSI C enviornment.  An equivalent must be
+ * provided in your enviornment in order to use dwc_os.h with the debug and
+ * tracing message functionality.
+ *
+ * @subsection thread Threading
+ *
+ * WUDEV Core must be run on an operating system that provides for multiple
+ * threads/processes.  Threading can be implemented in many ways, even in
+ * embedded systems without an operating system.  At the bare minimum, the
+ * system should be able to start any number of processes at any time to handle
+ * special work.  It need not be a pre-emptive system.  Process context can
+ * change upon a call to a blocking function.  The hardware interrupt context
+ * that calls the module's ISR() function must be differentiable from process
+ * context, even if your processes are impemented via a hardware interrupt.
+ * Further locking mechanism between process must exist (or be implemented), and
+ * process context must have a way to disable interrupts for a period of time to
+ * lock them out.  If all of this exists, the functions in dwc_os.h related to
+ * threading should be able to be implemented with the defined behavior.
+ *
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DWC_OS_H_ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/Makefile linux-rpi/drivers/usb/host/dwc_common_port/Makefile
--- linux-3.18.10/drivers/usb/host/dwc_common_port/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/Makefile	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,58 @@
+#
+# Makefile for DWC_common library
+#
+
+ifneq ($(KERNELRELEASE),)
+
+ccflags-y	+= -DDWC_LINUX
+#ccflags-y	+= -DDEBUG
+#ccflags-y	+= -DDWC_DEBUG_REGS
+#ccflags-y	+= -DDWC_DEBUG_MEMORY
+
+ccflags-y	+= -DDWC_LIBMODULE
+ccflags-y	+= -DDWC_CCLIB
+#ccflags-y	+= -DDWC_CRYPTOLIB
+ccflags-y	+= -DDWC_NOTIFYLIB
+ccflags-y	+= -DDWC_UTFLIB
+
+obj-$(CONFIG_USB_DWCOTG)	+= dwc_common_port_lib.o
+dwc_common_port_lib-objs := dwc_cc.o dwc_modpow.o dwc_dh.o \
+			    dwc_crypto.o dwc_notifier.o \
+			    dwc_common_linux.o dwc_mem.o
+
+kernrelwd := $(subst ., ,$(KERNELRELEASE))
+kernrel3 := $(word 1,$(kernrelwd)).$(word 2,$(kernrelwd)).$(word 3,$(kernrelwd))
+
+ifneq ($(kernrel3),2.6.20)
+# grayg - I only know that we use ccflags-y in 2.6.31 actually
+ccflags-y += $(CPPFLAGS)
+endif
+
+else
+
+#ifeq ($(KDIR),)
+#$(error Must give "KDIR=/path/to/kernel/source" on command line or in environment)
+#endif
+
+ifeq ($(ARCH),)
+$(error Must give "ARCH=<arch>" on command line or in environment. Also, if \
+ cross-compiling, must give "CROSS_COMPILE=/path/to/compiler/plus/tool-prefix-")
+endif
+
+ifeq ($(DOXYGEN),)
+DOXYGEN		:= doxygen
+endif
+
+default:
+	$(MAKE) -C$(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
+
+docs:	$(wildcard *.[hc]) doc/doxygen.cfg
+	$(DOXYGEN) doc/doxygen.cfg
+
+tags:	$(wildcard *.[hc])
+	$(CTAGS) -e $(wildcard *.[hc]) $(wildcard linux/*.[hc]) $(wildcard $(KDIR)/include/linux/usb*.h)
+
+endif
+
+clean:
+	rm -rf *.o *.ko .*.cmd *.mod.c .*.o.d .*.o.tmp modules.order Module.markers Module.symvers .tmp_versions/
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/Makefile.fbsd linux-rpi/drivers/usb/host/dwc_common_port/Makefile.fbsd
--- linux-3.18.10/drivers/usb/host/dwc_common_port/Makefile.fbsd	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/Makefile.fbsd	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,17 @@
+CFLAGS	+= -I/sys/i386/compile/GENERIC -I/sys/i386/include -I/usr/include
+CFLAGS	+= -DDWC_FREEBSD
+CFLAGS	+= -DDEBUG
+#CFLAGS	+= -DDWC_DEBUG_REGS
+#CFLAGS	+= -DDWC_DEBUG_MEMORY
+
+#CFLAGS	+= -DDWC_LIBMODULE
+#CFLAGS	+= -DDWC_CCLIB
+#CFLAGS	+= -DDWC_CRYPTOLIB
+#CFLAGS	+= -DDWC_NOTIFYLIB
+#CFLAGS	+= -DDWC_UTFLIB
+
+KMOD = dwc_common_port_lib
+SRCS = dwc_cc.c dwc_modpow.c dwc_dh.c dwc_crypto.c dwc_notifier.c \
+       dwc_common_fbsd.c dwc_mem.c
+
+.include <bsd.kmod.mk>
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/Makefile.linux linux-rpi/drivers/usb/host/dwc_common_port/Makefile.linux
--- linux-3.18.10/drivers/usb/host/dwc_common_port/Makefile.linux	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/Makefile.linux	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,49 @@
+#
+# Makefile for DWC_common library
+#
+ifneq ($(KERNELRELEASE),)
+
+ccflags-y	+= -DDWC_LINUX
+#ccflags-y	+= -DDEBUG
+#ccflags-y	+= -DDWC_DEBUG_REGS
+#ccflags-y	+= -DDWC_DEBUG_MEMORY
+
+ccflags-y	+= -DDWC_LIBMODULE
+ccflags-y	+= -DDWC_CCLIB
+ccflags-y	+= -DDWC_CRYPTOLIB
+ccflags-y	+= -DDWC_NOTIFYLIB
+ccflags-y	+= -DDWC_UTFLIB
+
+obj-m			 := dwc_common_port_lib.o
+dwc_common_port_lib-objs := dwc_cc.o dwc_modpow.o dwc_dh.o \
+			    dwc_crypto.o dwc_notifier.o \
+			    dwc_common_linux.o dwc_mem.o
+
+else
+
+ifeq ($(KDIR),)
+$(error Must give "KDIR=/path/to/kernel/source" on command line or in environment)
+endif
+
+ifeq ($(ARCH),)
+$(error Must give "ARCH=<arch>" on command line or in environment. Also, if \
+ cross-compiling, must give "CROSS_COMPILE=/path/to/compiler/plus/tool-prefix-")
+endif
+
+ifeq ($(DOXYGEN),)
+DOXYGEN		:= doxygen
+endif
+
+default:
+	$(MAKE) -C$(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
+
+docs:	$(wildcard *.[hc]) doc/doxygen.cfg
+	$(DOXYGEN) doc/doxygen.cfg
+
+tags:	$(wildcard *.[hc])
+	$(CTAGS) -e $(wildcard *.[hc]) $(wildcard linux/*.[hc]) $(wildcard $(KDIR)/include/linux/usb*.h)
+
+endif
+
+clean:
+	rm -rf *.o *.ko .*.cmd *.mod.c .*.o.d .*.o.tmp modules.order Module.markers Module.symvers .tmp_versions/
diff -Nur linux-3.18.10/drivers/usb/host/dwc_common_port/usb.h linux-rpi/drivers/usb/host/dwc_common_port/usb.h
--- linux-3.18.10/drivers/usb/host/dwc_common_port/usb.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_common_port/usb.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,946 @@
+/*
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Lennart Augustsson (lennart@augustsson.net) at
+ * Carlstedt Research & Technology.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Modified by Synopsys, Inc, 12/12/2007 */
+
+
+#ifndef _USB_H_
+#define _USB_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The USB records contain some unaligned little-endian word
+ * components.  The U[SG]ETW macros take care of both the alignment
+ * and endian problem and should always be used to access non-byte
+ * values.
+ */
+typedef u_int8_t uByte;
+typedef u_int8_t uWord[2];
+typedef u_int8_t uDWord[4];
+
+#define USETW2(w,h,l) ((w)[0] = (u_int8_t)(l), (w)[1] = (u_int8_t)(h))
+#define UCONSTW(x)	{ (x) & 0xff, ((x) >> 8) & 0xff }
+#define UCONSTDW(x)	{ (x) & 0xff, ((x) >> 8) & 0xff, \
+			  ((x) >> 16) & 0xff, ((x) >> 24) & 0xff }
+
+#if 1
+#define UGETW(w) ((w)[0] | ((w)[1] << 8))
+#define USETW(w,v) ((w)[0] = (u_int8_t)(v), (w)[1] = (u_int8_t)((v) >> 8))
+#define UGETDW(w) ((w)[0] | ((w)[1] << 8) | ((w)[2] << 16) | ((w)[3] << 24))
+#define USETDW(w,v) ((w)[0] = (u_int8_t)(v), \
+		     (w)[1] = (u_int8_t)((v) >> 8), \
+		     (w)[2] = (u_int8_t)((v) >> 16), \
+		     (w)[3] = (u_int8_t)((v) >> 24))
+#else
+/*
+ * On little-endian machines that can handle unanliged accesses
+ * (e.g. i386) these macros can be replaced by the following.
+ */
+#define UGETW(w) (*(u_int16_t *)(w))
+#define USETW(w,v) (*(u_int16_t *)(w) = (v))
+#define UGETDW(w) (*(u_int32_t *)(w))
+#define USETDW(w,v) (*(u_int32_t *)(w) = (v))
+#endif
+
+/*
+ * Macros for accessing UAS IU fields, which are big-endian
+ */
+#define IUSETW2(w,h,l) ((w)[0] = (u_int8_t)(h), (w)[1] = (u_int8_t)(l))
+#define IUCONSTW(x)	{ ((x) >> 8) & 0xff, (x) & 0xff }
+#define IUCONSTDW(x)	{ ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \
+			((x) >> 8) & 0xff, (x) & 0xff }
+#define IUGETW(w) (((w)[0] << 8) | (w)[1])
+#define IUSETW(w,v) ((w)[0] = (u_int8_t)((v) >> 8), (w)[1] = (u_int8_t)(v))
+#define IUGETDW(w) (((w)[0] << 24) | ((w)[1] << 16) | ((w)[2] << 8) | (w)[3])
+#define IUSETDW(w,v) ((w)[0] = (u_int8_t)((v) >> 24), \
+		      (w)[1] = (u_int8_t)((v) >> 16), \
+		      (w)[2] = (u_int8_t)((v) >> 8), \
+		      (w)[3] = (u_int8_t)(v))
+
+#define UPACKED __attribute__((__packed__))
+
+typedef struct {
+	uByte		bmRequestType;
+	uByte		bRequest;
+	uWord		wValue;
+	uWord		wIndex;
+	uWord		wLength;
+} UPACKED usb_device_request_t;
+
+#define UT_GET_DIR(a) ((a) & 0x80)
+#define UT_WRITE		0x00
+#define UT_READ			0x80
+
+#define UT_GET_TYPE(a) ((a) & 0x60)
+#define UT_STANDARD		0x00
+#define UT_CLASS		0x20
+#define UT_VENDOR		0x40
+
+#define UT_GET_RECIPIENT(a) ((a) & 0x1f)
+#define UT_DEVICE		0x00
+#define UT_INTERFACE		0x01
+#define UT_ENDPOINT		0x02
+#define UT_OTHER		0x03
+
+#define UT_READ_DEVICE		(UT_READ  | UT_STANDARD | UT_DEVICE)
+#define UT_READ_INTERFACE	(UT_READ  | UT_STANDARD | UT_INTERFACE)
+#define UT_READ_ENDPOINT	(UT_READ  | UT_STANDARD | UT_ENDPOINT)
+#define UT_WRITE_DEVICE		(UT_WRITE | UT_STANDARD | UT_DEVICE)
+#define UT_WRITE_INTERFACE	(UT_WRITE | UT_STANDARD | UT_INTERFACE)
+#define UT_WRITE_ENDPOINT	(UT_WRITE | UT_STANDARD | UT_ENDPOINT)
+#define UT_READ_CLASS_DEVICE	(UT_READ  | UT_CLASS | UT_DEVICE)
+#define UT_READ_CLASS_INTERFACE	(UT_READ  | UT_CLASS | UT_INTERFACE)
+#define UT_READ_CLASS_OTHER	(UT_READ  | UT_CLASS | UT_OTHER)
+#define UT_READ_CLASS_ENDPOINT	(UT_READ  | UT_CLASS | UT_ENDPOINT)
+#define UT_WRITE_CLASS_DEVICE	(UT_WRITE | UT_CLASS | UT_DEVICE)
+#define UT_WRITE_CLASS_INTERFACE (UT_WRITE | UT_CLASS | UT_INTERFACE)
+#define UT_WRITE_CLASS_OTHER	(UT_WRITE | UT_CLASS | UT_OTHER)
+#define UT_WRITE_CLASS_ENDPOINT	(UT_WRITE | UT_CLASS | UT_ENDPOINT)
+#define UT_READ_VENDOR_DEVICE	(UT_READ  | UT_VENDOR | UT_DEVICE)
+#define UT_READ_VENDOR_INTERFACE (UT_READ  | UT_VENDOR | UT_INTERFACE)
+#define UT_READ_VENDOR_OTHER	(UT_READ  | UT_VENDOR | UT_OTHER)
+#define UT_READ_VENDOR_ENDPOINT	(UT_READ  | UT_VENDOR | UT_ENDPOINT)
+#define UT_WRITE_VENDOR_DEVICE	(UT_WRITE | UT_VENDOR | UT_DEVICE)
+#define UT_WRITE_VENDOR_INTERFACE (UT_WRITE | UT_VENDOR | UT_INTERFACE)
+#define UT_WRITE_VENDOR_OTHER	(UT_WRITE | UT_VENDOR | UT_OTHER)
+#define UT_WRITE_VENDOR_ENDPOINT (UT_WRITE | UT_VENDOR | UT_ENDPOINT)
+
+/* Requests */
+#define UR_GET_STATUS		0x00
+#define  USTAT_STANDARD_STATUS  0x00
+#define  WUSTAT_WUSB_FEATURE    0x01
+#define  WUSTAT_CHANNEL_INFO    0x02
+#define  WUSTAT_RECEIVED_DATA   0x03
+#define  WUSTAT_MAS_AVAILABILITY 0x04
+#define  WUSTAT_CURRENT_TRANSMIT_POWER 0x05
+#define UR_CLEAR_FEATURE	0x01
+#define UR_SET_FEATURE		0x03
+#define UR_SET_AND_TEST_FEATURE 0x0c
+#define UR_SET_ADDRESS		0x05
+#define UR_GET_DESCRIPTOR	0x06
+#define  UDESC_DEVICE		0x01
+#define  UDESC_CONFIG		0x02
+#define  UDESC_STRING		0x03
+#define  UDESC_INTERFACE	0x04
+#define  UDESC_ENDPOINT		0x05
+#define  UDESC_SS_USB_COMPANION	0x30
+#define  UDESC_DEVICE_QUALIFIER	0x06
+#define  UDESC_OTHER_SPEED_CONFIGURATION 0x07
+#define  UDESC_INTERFACE_POWER	0x08
+#define  UDESC_OTG		0x09
+#define  WUDESC_SECURITY	0x0c
+#define  WUDESC_KEY		0x0d
+#define   WUD_GET_KEY_INDEX(_wValue_) ((_wValue_) & 0xf)
+#define   WUD_GET_KEY_TYPE(_wValue_) (((_wValue_) & 0x30) >> 4)
+#define    WUD_KEY_TYPE_ASSOC    0x01
+#define    WUD_KEY_TYPE_GTK      0x02
+#define   WUD_GET_KEY_ORIGIN(_wValue_) (((_wValue_) & 0x40) >> 6)
+#define    WUD_KEY_ORIGIN_HOST   0x00
+#define    WUD_KEY_ORIGIN_DEVICE 0x01
+#define  WUDESC_ENCRYPTION_TYPE	0x0e
+#define  WUDESC_BOS		0x0f
+#define  WUDESC_DEVICE_CAPABILITY 0x10
+#define  WUDESC_WIRELESS_ENDPOINT_COMPANION 0x11
+#define  UDESC_BOS		0x0f
+#define  UDESC_DEVICE_CAPABILITY 0x10
+#define  UDESC_CS_DEVICE	0x21	/* class specific */
+#define  UDESC_CS_CONFIG	0x22
+#define  UDESC_CS_STRING	0x23
+#define  UDESC_CS_INTERFACE	0x24
+#define  UDESC_CS_ENDPOINT	0x25
+#define  UDESC_HUB		0x29
+#define UR_SET_DESCRIPTOR	0x07
+#define UR_GET_CONFIG		0x08
+#define UR_SET_CONFIG		0x09
+#define UR_GET_INTERFACE	0x0a
+#define UR_SET_INTERFACE	0x0b
+#define UR_SYNCH_FRAME		0x0c
+#define WUR_SET_ENCRYPTION      0x0d
+#define WUR_GET_ENCRYPTION	0x0e
+#define WUR_SET_HANDSHAKE	0x0f
+#define WUR_GET_HANDSHAKE	0x10
+#define WUR_SET_CONNECTION	0x11
+#define WUR_SET_SECURITY_DATA	0x12
+#define WUR_GET_SECURITY_DATA	0x13
+#define WUR_SET_WUSB_DATA	0x14
+#define  WUDATA_DRPIE_INFO	0x01
+#define  WUDATA_TRANSMIT_DATA	0x02
+#define  WUDATA_TRANSMIT_PARAMS	0x03
+#define  WUDATA_RECEIVE_PARAMS	0x04
+#define  WUDATA_TRANSMIT_POWER	0x05
+#define WUR_LOOPBACK_DATA_WRITE	0x15
+#define WUR_LOOPBACK_DATA_READ	0x16
+#define WUR_SET_INTERFACE_DS	0x17
+
+/* Feature numbers */
+#define UF_ENDPOINT_HALT	0
+#define UF_DEVICE_REMOTE_WAKEUP	1
+#define UF_TEST_MODE		2
+#define UF_DEVICE_B_HNP_ENABLE	3
+#define UF_DEVICE_A_HNP_SUPPORT	4
+#define UF_DEVICE_A_ALT_HNP_SUPPORT 5
+#define WUF_WUSB		3
+#define  WUF_TX_DRPIE		0x0
+#define  WUF_DEV_XMIT_PACKET	0x1
+#define  WUF_COUNT_PACKETS	0x2
+#define  WUF_CAPTURE_PACKETS	0x3
+#define UF_FUNCTION_SUSPEND	0
+#define UF_U1_ENABLE		48
+#define UF_U2_ENABLE		49
+#define UF_LTM_ENABLE		50
+
+/* Class requests from the USB 2.0 hub spec, table 11-15 */
+#define UCR_CLEAR_HUB_FEATURE		(0x2000 | UR_CLEAR_FEATURE)
+#define UCR_CLEAR_PORT_FEATURE		(0x2300 | UR_CLEAR_FEATURE)
+#define UCR_GET_HUB_DESCRIPTOR		(0xa000 | UR_GET_DESCRIPTOR)
+#define UCR_GET_HUB_STATUS		(0xa000 | UR_GET_STATUS)
+#define UCR_GET_PORT_STATUS		(0xa300 | UR_GET_STATUS)
+#define UCR_SET_HUB_FEATURE		(0x2000 | UR_SET_FEATURE)
+#define UCR_SET_PORT_FEATURE		(0x2300 | UR_SET_FEATURE)
+#define UCR_SET_AND_TEST_PORT_FEATURE	(0xa300 | UR_SET_AND_TEST_FEATURE)
+
+#ifdef _MSC_VER
+#include <pshpack1.h>
+#endif
+
+typedef struct {
+	uByte		bLength;
+	uByte		bDescriptorType;
+	uByte		bDescriptorSubtype;
+} UPACKED usb_descriptor_t;
+
+typedef struct {
+	uByte		bLength;
+	uByte		bDescriptorType;
+} UPACKED usb_descriptor_header_t;
+
+typedef struct {
+	uByte		bLength;
+	uByte		bDescriptorType;
+	uWord		bcdUSB;
+#define UD_USB_2_0		0x0200
+#define UD_IS_USB2(d) (UGETW((d)->bcdUSB) >= UD_USB_2_0)
+	uByte		bDeviceClass;
+	uByte		bDeviceSubClass;
+	uByte		bDeviceProtocol;
+	uByte		bMaxPacketSize;
+	/* The fields below are not part of the initial descriptor. */
+	uWord		idVendor;
+	uWord		idProduct;
+	uWord		bcdDevice;
+	uByte		iManufacturer;
+	uByte		iProduct;
+	uByte		iSerialNumber;
+	uByte		bNumConfigurations;
+} UPACKED usb_device_descriptor_t;
+#define USB_DEVICE_DESCRIPTOR_SIZE 18
+
+typedef struct {
+	uByte		bLength;
+	uByte		bDescriptorType;
+	uWord		wTotalLength;
+	uByte		bNumInterface;
+	uByte		bConfigurationValue;
+	uByte		iConfiguration;
+#define UC_ATT_ONE		(1 << 7)	/* must be set */
+#define UC_ATT_SELFPOWER	(1 << 6)	/* self powered */
+#define UC_ATT_WAKEUP		(1 << 5)	/* can wakeup */
+#define UC_ATT_BATTERY		(1 << 4)	/* battery powered */
+	uByte		bmAttributes;
+#define UC_BUS_POWERED		0x80
+#define UC_SELF_POWERED		0x40
+#define UC_REMOTE_WAKEUP	0x20
+	uByte		bMaxPower; /* max current in 2 mA units */
+#define UC_POWER_FACTOR 2
+} UPACKED usb_config_descriptor_t;
+#define USB_CONFIG_DESCRIPTOR_SIZE 9
+
+typedef struct {
+	uByte		bLength;
+	uByte		bDescriptorType;
+	uByte		bInterfaceNumber;
+	uByte		bAlternateSetting;
+	uByte		bNumEndpoints;
+	uByte		bInterfaceClass;
+	uByte		bInterfaceSubClass;
+	uByte		bInterfaceProtocol;
+	uByte		iInterface;
+} UPACKED usb_interface_descriptor_t;
+#define USB_INTERFACE_DESCRIPTOR_SIZE 9
+
+typedef struct {
+	uByte		bLength;
+	uByte		bDescriptorType;
+	uByte		bEndpointAddress;
+#define UE_GET_DIR(a)	((a) & 0x80)
+#define UE_SET_DIR(a,d)	((a) | (((d)&1) << 7))
+#define UE_DIR_IN	0x80
+#define UE_DIR_OUT	0x00
+#define UE_ADDR		0x0f
+#define UE_GET_ADDR(a)	((a) & UE_ADDR)
+	uByte		bmAttributes;
+#define UE_XFERTYPE	0x03
+#define  UE_CONTROL	0x00
+#define  UE_ISOCHRONOUS	0x01
+#define  UE_BULK	0x02
+#define  UE_INTERRUPT	0x03
+#define UE_GET_XFERTYPE(a)	((a) & UE_XFERTYPE)
+#define UE_ISO_TYPE	0x0c
+#define  UE_ISO_ASYNC	0x04
+#define  UE_ISO_ADAPT	0x08
+#define  UE_ISO_SYNC	0x0c
+#define UE_GET_ISO_TYPE(a)	((a) & UE_ISO_TYPE)
+	uWord		wMaxPacketSize;
+	uByte		bInterval;
+} UPACKED usb_endpoint_descriptor_t;
+#define USB_ENDPOINT_DESCRIPTOR_SIZE 7
+
+typedef struct ss_endpoint_companion_descriptor {
+	uByte bLength;
+	uByte bDescriptorType;
+	uByte bMaxBurst;
+#define USSE_GET_MAX_STREAMS(a)		((a) & 0x1f)
+#define USSE_SET_MAX_STREAMS(a, b)	((a) | ((b) & 0x1f))
+#define USSE_GET_MAX_PACKET_NUM(a)	((a) & 0x03)
+#define USSE_SET_MAX_PACKET_NUM(a, b)	((a) | ((b) & 0x03))
+	uByte bmAttributes;
+	uWord wBytesPerInterval;
+} UPACKED ss_endpoint_companion_descriptor_t;
+#define USB_SS_ENDPOINT_COMPANION_DESCRIPTOR_SIZE 6
+
+typedef struct {
+	uByte		bLength;
+	uByte		bDescriptorType;
+	uWord		bString[127];
+} UPACKED usb_string_descriptor_t;
+#define USB_MAX_STRING_LEN 128
+#define USB_LANGUAGE_TABLE 0	/* # of the string language id table */
+
+/* Hub specific request */
+#define UR_GET_BUS_STATE	0x02
+#define UR_CLEAR_TT_BUFFER	0x08
+#define UR_RESET_TT		0x09
+#define UR_GET_TT_STATE		0x0a
+#define UR_STOP_TT		0x0b
+
+/* Hub features */
+#define UHF_C_HUB_LOCAL_POWER	0
+#define UHF_C_HUB_OVER_CURRENT	1
+#define UHF_PORT_CONNECTION	0
+#define UHF_PORT_ENABLE		1
+#define UHF_PORT_SUSPEND	2
+#define UHF_PORT_OVER_CURRENT	3
+#define UHF_PORT_RESET		4
+#define UHF_PORT_L1		5
+#define UHF_PORT_POWER		8
+#define UHF_PORT_LOW_SPEED	9
+#define UHF_PORT_HIGH_SPEED	10
+#define UHF_C_PORT_CONNECTION	16
+#define UHF_C_PORT_ENABLE	17
+#define UHF_C_PORT_SUSPEND	18
+#define UHF_C_PORT_OVER_CURRENT	19
+#define UHF_C_PORT_RESET	20
+#define UHF_C_PORT_L1		23
+#define UHF_PORT_TEST		21
+#define UHF_PORT_INDICATOR	22
+
+typedef struct {
+	uByte		bDescLength;
+	uByte		bDescriptorType;
+	uByte		bNbrPorts;
+	uWord		wHubCharacteristics;
+#define UHD_PWR			0x0003
+#define  UHD_PWR_GANGED		0x0000
+#define  UHD_PWR_INDIVIDUAL	0x0001
+#define  UHD_PWR_NO_SWITCH	0x0002
+#define UHD_COMPOUND		0x0004
+#define UHD_OC			0x0018
+#define  UHD_OC_GLOBAL		0x0000
+#define  UHD_OC_INDIVIDUAL	0x0008
+#define  UHD_OC_NONE		0x0010
+#define UHD_TT_THINK		0x0060
+#define  UHD_TT_THINK_8		0x0000
+#define  UHD_TT_THINK_16	0x0020
+#define  UHD_TT_THINK_24	0x0040
+#define  UHD_TT_THINK_32	0x0060
+#define UHD_PORT_IND		0x0080
+	uByte		bPwrOn2PwrGood;	/* delay in 2 ms units */
+#define UHD_PWRON_FACTOR 2
+	uByte		bHubContrCurrent;
+	uByte		DeviceRemovable[32]; /* max 255 ports */
+#define UHD_NOT_REMOV(desc, i) \
+    (((desc)->DeviceRemovable[(i)/8] >> ((i) % 8)) & 1)
+	/* deprecated */ uByte		PortPowerCtrlMask[1];
+} UPACKED usb_hub_descriptor_t;
+#define USB_HUB_DESCRIPTOR_SIZE 9 /* includes deprecated PortPowerCtrlMask */
+
+typedef struct {
+	uByte		bLength;
+	uByte		bDescriptorType;
+	uWord		bcdUSB;
+	uByte		bDeviceClass;
+	uByte		bDeviceSubClass;
+	uByte		bDeviceProtocol;
+	uByte		bMaxPacketSize0;
+	uByte		bNumConfigurations;
+	uByte		bReserved;
+} UPACKED usb_device_qualifier_t;
+#define USB_DEVICE_QUALIFIER_SIZE 10
+
+typedef struct {
+	uByte		bLength;
+	uByte		bDescriptorType;
+	uByte		bmAttributes;
+#define UOTG_SRP	0x01
+#define UOTG_HNP	0x02
+} UPACKED usb_otg_descriptor_t;
+
+/* OTG feature selectors */
+#define UOTG_B_HNP_ENABLE	3
+#define UOTG_A_HNP_SUPPORT	4
+#define UOTG_A_ALT_HNP_SUPPORT	5
+
+typedef struct {
+	uWord		wStatus;
+/* Device status flags */
+#define UDS_SELF_POWERED		0x0001
+#define UDS_REMOTE_WAKEUP		0x0002
+/* Endpoint status flags */
+#define UES_HALT			0x0001
+} UPACKED usb_status_t;
+
+typedef struct {
+	uWord		wHubStatus;
+#define UHS_LOCAL_POWER			0x0001
+#define UHS_OVER_CURRENT		0x0002
+	uWord		wHubChange;
+} UPACKED usb_hub_status_t;
+
+typedef struct {
+	uWord		wPortStatus;
+#define UPS_CURRENT_CONNECT_STATUS	0x0001
+#define UPS_PORT_ENABLED		0x0002
+#define UPS_SUSPEND			0x0004
+#define UPS_OVERCURRENT_INDICATOR	0x0008
+#define UPS_RESET			0x0010
+#define UPS_PORT_POWER			0x0100
+#define UPS_LOW_SPEED			0x0200
+#define UPS_HIGH_SPEED			0x0400
+#define UPS_PORT_TEST			0x0800
+#define UPS_PORT_INDICATOR		0x1000
+	uWord		wPortChange;
+#define UPS_C_CONNECT_STATUS		0x0001
+#define UPS_C_PORT_ENABLED		0x0002
+#define UPS_C_SUSPEND			0x0004
+#define UPS_C_OVERCURRENT_INDICATOR	0x0008
+#define UPS_C_PORT_RESET		0x0010
+} UPACKED usb_port_status_t;
+
+#ifdef _MSC_VER
+#include <poppack.h>
+#endif
+
+/* Device class codes */
+#define UDCLASS_IN_INTERFACE	0x00
+#define UDCLASS_COMM		0x02
+#define UDCLASS_HUB		0x09
+#define  UDSUBCLASS_HUB		0x00
+#define  UDPROTO_FSHUB		0x00
+#define  UDPROTO_HSHUBSTT	0x01
+#define  UDPROTO_HSHUBMTT	0x02
+#define UDCLASS_DIAGNOSTIC	0xdc
+#define UDCLASS_WIRELESS	0xe0
+#define  UDSUBCLASS_RF		0x01
+#define   UDPROTO_BLUETOOTH	0x01
+#define UDCLASS_VENDOR		0xff
+
+/* Interface class codes */
+#define UICLASS_UNSPEC		0x00
+
+#define UICLASS_AUDIO		0x01
+#define  UISUBCLASS_AUDIOCONTROL	1
+#define  UISUBCLASS_AUDIOSTREAM		2
+#define  UISUBCLASS_MIDISTREAM		3
+
+#define UICLASS_CDC		0x02 /* communication */
+#define  UISUBCLASS_DIRECT_LINE_CONTROL_MODEL	1
+#define  UISUBCLASS_ABSTRACT_CONTROL_MODEL	2
+#define  UISUBCLASS_TELEPHONE_CONTROL_MODEL	3
+#define  UISUBCLASS_MULTICHANNEL_CONTROL_MODEL	4
+#define  UISUBCLASS_CAPI_CONTROLMODEL		5
+#define  UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL 6
+#define  UISUBCLASS_ATM_NETWORKING_CONTROL_MODEL 7
+#define   UIPROTO_CDC_AT			1
+
+#define UICLASS_HID		0x03
+#define  UISUBCLASS_BOOT	1
+#define  UIPROTO_BOOT_KEYBOARD	1
+
+#define UICLASS_PHYSICAL	0x05
+
+#define UICLASS_IMAGE		0x06
+
+#define UICLASS_PRINTER		0x07
+#define  UISUBCLASS_PRINTER	1
+#define  UIPROTO_PRINTER_UNI	1
+#define  UIPROTO_PRINTER_BI	2
+#define  UIPROTO_PRINTER_1284	3
+
+#define UICLASS_MASS		0x08
+#define  UISUBCLASS_RBC		1
+#define  UISUBCLASS_SFF8020I	2
+#define  UISUBCLASS_QIC157	3
+#define  UISUBCLASS_UFI		4
+#define  UISUBCLASS_SFF8070I	5
+#define  UISUBCLASS_SCSI	6
+#define  UIPROTO_MASS_CBI_I	0
+#define  UIPROTO_MASS_CBI	1
+#define  UIPROTO_MASS_BBB_OLD	2	/* Not in the spec anymore */
+#define  UIPROTO_MASS_BBB	80	/* 'P' for the Iomega Zip drive */
+
+#define UICLASS_HUB		0x09
+#define  UISUBCLASS_HUB		0
+#define  UIPROTO_FSHUB		0
+#define  UIPROTO_HSHUBSTT	0 /* Yes, same as previous */
+#define  UIPROTO_HSHUBMTT	1
+
+#define UICLASS_CDC_DATA	0x0a
+#define  UISUBCLASS_DATA		0
+#define   UIPROTO_DATA_ISDNBRI		0x30    /* Physical iface */
+#define   UIPROTO_DATA_HDLC		0x31    /* HDLC */
+#define   UIPROTO_DATA_TRANSPARENT	0x32    /* Transparent */
+#define   UIPROTO_DATA_Q921M		0x50    /* Management for Q921 */
+#define   UIPROTO_DATA_Q921		0x51    /* Data for Q921 */
+#define   UIPROTO_DATA_Q921TM		0x52    /* TEI multiplexer for Q921 */
+#define   UIPROTO_DATA_V42BIS		0x90    /* Data compression */
+#define   UIPROTO_DATA_Q931		0x91    /* Euro-ISDN */
+#define   UIPROTO_DATA_V120		0x92    /* V.24 rate adaption */
+#define   UIPROTO_DATA_CAPI		0x93    /* CAPI 2.0 commands */
+#define   UIPROTO_DATA_HOST_BASED	0xfd    /* Host based driver */
+#define   UIPROTO_DATA_PUF		0xfe    /* see Prot. Unit Func. Desc.*/
+#define   UIPROTO_DATA_VENDOR		0xff    /* Vendor specific */
+
+#define UICLASS_SMARTCARD	0x0b
+
+/*#define UICLASS_FIRM_UPD	0x0c*/
+
+#define UICLASS_SECURITY	0x0d
+
+#define UICLASS_DIAGNOSTIC	0xdc
+
+#define UICLASS_WIRELESS	0xe0
+#define  UISUBCLASS_RF			0x01
+#define   UIPROTO_BLUETOOTH		0x01
+
+#define UICLASS_APPL_SPEC	0xfe
+#define  UISUBCLASS_FIRMWARE_DOWNLOAD	1
+#define  UISUBCLASS_IRDA		2
+#define  UIPROTO_IRDA			0
+
+#define UICLASS_VENDOR		0xff
+
+#define USB_HUB_MAX_DEPTH 5
+
+/*
+ * Minimum time a device needs to be powered down to go through
+ * a power cycle.  XXX Are these time in the spec?
+ */
+#define USB_POWER_DOWN_TIME	200 /* ms */
+#define USB_PORT_POWER_DOWN_TIME	100 /* ms */
+
+#if 0
+/* These are the values from the spec. */
+#define USB_PORT_RESET_DELAY	10  /* ms */
+#define USB_PORT_ROOT_RESET_DELAY 50  /* ms */
+#define USB_PORT_RESET_RECOVERY	10  /* ms */
+#define USB_PORT_POWERUP_DELAY	100 /* ms */
+#define USB_SET_ADDRESS_SETTLE	2   /* ms */
+#define USB_RESUME_DELAY	(20*5)  /* ms */
+#define USB_RESUME_WAIT		10  /* ms */
+#define USB_RESUME_RECOVERY	10  /* ms */
+#define USB_EXTRA_POWER_UP_TIME	0   /* ms */
+#else
+/* Allow for marginal (i.e. non-conforming) devices. */
+#define USB_PORT_RESET_DELAY	50  /* ms */
+#define USB_PORT_ROOT_RESET_DELAY 250  /* ms */
+#define USB_PORT_RESET_RECOVERY	250  /* ms */
+#define USB_PORT_POWERUP_DELAY	300 /* ms */
+#define USB_SET_ADDRESS_SETTLE	10  /* ms */
+#define USB_RESUME_DELAY	(50*5)  /* ms */
+#define USB_RESUME_WAIT		50  /* ms */
+#define USB_RESUME_RECOVERY	50  /* ms */
+#define USB_EXTRA_POWER_UP_TIME	20  /* ms */
+#endif
+
+#define USB_MIN_POWER		100 /* mA */
+#define USB_MAX_POWER		500 /* mA */
+
+#define USB_BUS_RESET_DELAY	100 /* ms XXX?*/
+
+#define USB_UNCONFIG_NO 0
+#define USB_UNCONFIG_INDEX (-1)
+
+/*** ioctl() related stuff ***/
+
+struct usb_ctl_request {
+	int	ucr_addr;
+	usb_device_request_t ucr_request;
+	void	*ucr_data;
+	int	ucr_flags;
+#define USBD_SHORT_XFER_OK	0x04	/* allow short reads */
+	int	ucr_actlen;		/* actual length transferred */
+};
+
+struct usb_alt_interface {
+	int	uai_config_index;
+	int	uai_interface_index;
+	int	uai_alt_no;
+};
+
+#define USB_CURRENT_CONFIG_INDEX (-1)
+#define USB_CURRENT_ALT_INDEX (-1)
+
+struct usb_config_desc {
+	int	ucd_config_index;
+	usb_config_descriptor_t ucd_desc;
+};
+
+struct usb_interface_desc {
+	int	uid_config_index;
+	int	uid_interface_index;
+	int	uid_alt_index;
+	usb_interface_descriptor_t uid_desc;
+};
+
+struct usb_endpoint_desc {
+	int	ued_config_index;
+	int	ued_interface_index;
+	int	ued_alt_index;
+	int	ued_endpoint_index;
+	usb_endpoint_descriptor_t ued_desc;
+};
+
+struct usb_full_desc {
+	int	ufd_config_index;
+	u_int	ufd_size;
+	u_char	*ufd_data;
+};
+
+struct usb_string_desc {
+	int	usd_string_index;
+	int	usd_language_id;
+	usb_string_descriptor_t usd_desc;
+};
+
+struct usb_ctl_report_desc {
+	int	ucrd_size;
+	u_char	ucrd_data[1024];	/* filled data size will vary */
+};
+
+typedef struct { u_int32_t cookie; } usb_event_cookie_t;
+
+#define USB_MAX_DEVNAMES 4
+#define USB_MAX_DEVNAMELEN 16
+struct usb_device_info {
+	u_int8_t	udi_bus;
+	u_int8_t	udi_addr;	/* device address */
+	usb_event_cookie_t udi_cookie;
+	char		udi_product[USB_MAX_STRING_LEN];
+	char		udi_vendor[USB_MAX_STRING_LEN];
+	char		udi_release[8];
+	u_int16_t	udi_productNo;
+	u_int16_t	udi_vendorNo;
+	u_int16_t	udi_releaseNo;
+	u_int8_t	udi_class;
+	u_int8_t	udi_subclass;
+	u_int8_t	udi_protocol;
+	u_int8_t	udi_config;
+	u_int8_t	udi_speed;
+#define USB_SPEED_UNKNOWN	0
+#define USB_SPEED_LOW		1
+#define USB_SPEED_FULL		2
+#define USB_SPEED_HIGH		3
+#define USB_SPEED_VARIABLE	4
+#define USB_SPEED_SUPER		5
+	int		udi_power;	/* power consumption in mA, 0 if selfpowered */
+	int		udi_nports;
+	char		udi_devnames[USB_MAX_DEVNAMES][USB_MAX_DEVNAMELEN];
+	u_int8_t	udi_ports[16];/* hub only: addresses of devices on ports */
+#define USB_PORT_ENABLED 0xff
+#define USB_PORT_SUSPENDED 0xfe
+#define USB_PORT_POWERED 0xfd
+#define USB_PORT_DISABLED 0xfc
+};
+
+struct usb_ctl_report {
+	int	ucr_report;
+	u_char	ucr_data[1024];	/* filled data size will vary */
+};
+
+struct usb_device_stats {
+	u_long	uds_requests[4];	/* indexed by transfer type UE_* */
+};
+
+#define WUSB_MIN_IE			0x80
+#define WUSB_WCTA_IE			0x80
+#define WUSB_WCONNECTACK_IE		0x81
+#define WUSB_WHOSTINFO_IE		0x82
+#define  WUHI_GET_CA(_bmAttributes_) ((_bmAttributes_) & 0x3)
+#define   WUHI_CA_RECONN		0x00
+#define   WUHI_CA_LIMITED		0x01
+#define   WUHI_CA_ALL			0x03
+#define  WUHI_GET_MLSI(_bmAttributes_) (((_bmAttributes_) & 0x38) >> 3)
+#define WUSB_WCHCHANGEANNOUNCE_IE	0x83
+#define WUSB_WDEV_DISCONNECT_IE		0x84
+#define WUSB_WHOST_DISCONNECT_IE	0x85
+#define WUSB_WRELEASE_CHANNEL_IE	0x86
+#define WUSB_WWORK_IE			0x87
+#define WUSB_WCHANNEL_STOP_IE		0x88
+#define WUSB_WDEV_KEEPALIVE_IE		0x89
+#define WUSB_WISOCH_DISCARD_IE		0x8A
+#define WUSB_WRESETDEVICE_IE		0x8B
+#define WUSB_WXMIT_PACKET_ADJUST_IE	0x8C
+#define WUSB_MAX_IE			0x8C
+
+/* Device Notification Types */
+
+#define WUSB_DN_MIN			0x01
+#define WUSB_DN_CONNECT			0x01
+# define WUSB_DA_OLDCONN	0x00
+# define WUSB_DA_NEWCONN	0x01
+# define WUSB_DA_SELF_BEACON	0x02
+# define WUSB_DA_DIR_BEACON	0x04
+# define WUSB_DA_NO_BEACON	0x06
+#define WUSB_DN_DISCONNECT		0x02
+#define WUSB_DN_EPRDY			0x03
+#define WUSB_DN_MASAVAILCHANGED		0x04
+#define WUSB_DN_REMOTEWAKEUP		0x05
+#define WUSB_DN_SLEEP			0x06
+#define WUSB_DN_ALIVE			0x07
+#define WUSB_DN_MAX			0x07
+
+#ifdef _MSC_VER
+#include <pshpack1.h>
+#endif
+
+/* WUSB Handshake Data.  Used during the SET/GET HANDSHAKE requests */
+typedef struct wusb_hndshk_data {
+	uByte bMessageNumber;
+	uByte bStatus;
+	uByte tTKID[3];
+	uByte bReserved;
+	uByte CDID[16];
+	uByte Nonce[16];
+	uByte MIC[8];
+} UPACKED wusb_hndshk_data_t;
+#define WUSB_HANDSHAKE_LEN_FOR_MIC	38
+
+/* WUSB Connection Context */
+typedef struct wusb_conn_context {
+	uByte CHID [16];
+	uByte CDID [16];
+	uByte CK [16];
+} UPACKED wusb_conn_context_t;
+
+/* WUSB Security Descriptor */
+typedef struct wusb_security_desc {
+	uByte bLength;
+	uByte bDescriptorType;
+	uWord wTotalLength;
+	uByte bNumEncryptionTypes;
+} UPACKED wusb_security_desc_t;
+
+/* WUSB Encryption Type Descriptor */
+typedef struct wusb_encrypt_type_desc {
+	uByte bLength;
+	uByte bDescriptorType;
+
+	uByte bEncryptionType;
+#define WUETD_UNSECURE		0
+#define WUETD_WIRED		1
+#define WUETD_CCM_1		2
+#define WUETD_RSA_1		3
+
+	uByte bEncryptionValue;
+	uByte bAuthKeyIndex;
+} UPACKED wusb_encrypt_type_desc_t;
+
+/* WUSB Key Descriptor */
+typedef struct wusb_key_desc {
+	uByte bLength;
+	uByte bDescriptorType;
+	uByte tTKID[3];
+	uByte bReserved;
+	uByte KeyData[1];	/* variable length */
+} UPACKED wusb_key_desc_t;
+
+/* WUSB BOS Descriptor (Binary device Object Store) */
+typedef struct wusb_bos_desc {
+	uByte bLength;
+	uByte bDescriptorType;
+	uWord wTotalLength;
+	uByte bNumDeviceCaps;
+} UPACKED wusb_bos_desc_t;
+
+#define USB_DEVICE_CAPABILITY_20_EXTENSION	0x02
+typedef struct usb_dev_cap_20_ext_desc {
+	uByte bLength;
+	uByte bDescriptorType;
+	uByte bDevCapabilityType;
+#define USB_20_EXT_LPM				0x02
+	uDWord bmAttributes;
+} UPACKED usb_dev_cap_20_ext_desc_t;
+
+#define USB_DEVICE_CAPABILITY_SS_USB		0x03
+typedef struct usb_dev_cap_ss_usb {
+	uByte bLength;
+	uByte bDescriptorType;
+	uByte bDevCapabilityType;
+#define USB_DC_SS_USB_LTM_CAPABLE		0x02
+	uByte bmAttributes;
+#define USB_DC_SS_USB_SPEED_SUPPORT_LOW		0x01
+#define USB_DC_SS_USB_SPEED_SUPPORT_FULL	0x02
+#define USB_DC_SS_USB_SPEED_SUPPORT_HIGH	0x04
+#define USB_DC_SS_USB_SPEED_SUPPORT_SS		0x08
+	uWord wSpeedsSupported;
+	uByte bFunctionalitySupport;
+	uByte bU1DevExitLat;
+	uWord wU2DevExitLat;
+} UPACKED usb_dev_cap_ss_usb_t;
+
+#define USB_DEVICE_CAPABILITY_CONTAINER_ID	0x04
+typedef struct usb_dev_cap_container_id {
+	uByte bLength;
+	uByte bDescriptorType;
+	uByte bDevCapabilityType;
+	uByte bReserved;
+	uByte containerID[16];
+} UPACKED usb_dev_cap_container_id_t;
+
+/* Device Capability Type Codes */
+#define WUSB_DEVICE_CAPABILITY_WIRELESS_USB 0x01
+
+/* Device Capability Descriptor */
+typedef struct wusb_dev_cap_desc {
+	uByte bLength;
+	uByte bDescriptorType;
+	uByte bDevCapabilityType;
+	uByte caps[1];	/* Variable length */
+} UPACKED wusb_dev_cap_desc_t;
+
+/* Device Capability Descriptor */
+typedef struct wusb_dev_cap_uwb_desc {
+	uByte bLength;
+	uByte bDescriptorType;
+	uByte bDevCapabilityType;
+	uByte bmAttributes;
+	uWord wPHYRates;	/* Bitmap */
+	uByte bmTFITXPowerInfo;
+	uByte bmFFITXPowerInfo;
+	uWord bmBandGroup;
+	uByte bReserved;
+} UPACKED wusb_dev_cap_uwb_desc_t;
+
+/* Wireless USB Endpoint Companion Descriptor */
+typedef struct wusb_endpoint_companion_desc {
+	uByte bLength;
+	uByte bDescriptorType;
+	uByte bMaxBurst;
+	uByte bMaxSequence;
+	uWord wMaxStreamDelay;
+	uWord wOverTheAirPacketSize;
+	uByte bOverTheAirInterval;
+	uByte bmCompAttributes;
+} UPACKED wusb_endpoint_companion_desc_t;
+
+/* Wireless USB Numeric Association M1 Data Structure */
+typedef struct wusb_m1_data {
+	uByte version;
+	uWord langId;
+	uByte deviceFriendlyNameLength;
+	uByte sha_256_m3[32];
+	uByte deviceFriendlyName[256];
+} UPACKED wusb_m1_data_t;
+
+typedef struct wusb_m2_data {
+	uByte version;
+	uWord langId;
+	uByte hostFriendlyNameLength;
+	uByte pkh[384];
+	uByte hostFriendlyName[256];
+} UPACKED wusb_m2_data_t;
+
+typedef struct wusb_m3_data {
+	uByte pkd[384];
+	uByte nd;
+} UPACKED wusb_m3_data_t;
+
+typedef struct wusb_m4_data {
+	uDWord _attributeTypeIdAndLength_1;
+	uWord  associationTypeId;
+
+	uDWord _attributeTypeIdAndLength_2;
+	uWord  associationSubTypeId;
+
+	uDWord _attributeTypeIdAndLength_3;
+	uDWord length;
+
+	uDWord _attributeTypeIdAndLength_4;
+	uDWord associationStatus;
+
+	uDWord _attributeTypeIdAndLength_5;
+	uByte  chid[16];
+
+	uDWord _attributeTypeIdAndLength_6;
+	uByte  cdid[16];
+
+	uDWord _attributeTypeIdAndLength_7;
+	uByte  bandGroups[2];
+} UPACKED wusb_m4_data_t;
+
+#ifdef _MSC_VER
+#include <poppack.h>
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _USB_H_ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/doc/doxygen.cfg linux-rpi/drivers/usb/host/dwc_otg/doc/doxygen.cfg
--- linux-3.18.10/drivers/usb/host/dwc_otg/doc/doxygen.cfg	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/doc/doxygen.cfg	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,224 @@
+# Doxyfile 1.3.9.1
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+PROJECT_NAME           = "DesignWare USB 2.0 OTG Controller (DWC_otg) Device Driver"
+PROJECT_NUMBER         = v3.00a
+OUTPUT_DIRECTORY       = ./doc/
+CREATE_SUBDIRS         = NO
+OUTPUT_LANGUAGE        = English
+BRIEF_MEMBER_DESC      = YES
+REPEAT_BRIEF           = YES
+ABBREVIATE_BRIEF       = "The $name class" \
+                         "The $name widget" \
+                         "The $name file" \
+                         is \
+                         provides \
+                         specifies \
+                         contains \
+                         represents \
+                         a \
+                         an \
+                         the
+ALWAYS_DETAILED_SEC    = NO
+INLINE_INHERITED_MEMB  = NO
+FULL_PATH_NAMES        = NO
+STRIP_FROM_PATH        =
+STRIP_FROM_INC_PATH    =
+SHORT_NAMES            = NO
+JAVADOC_AUTOBRIEF      = YES
+MULTILINE_CPP_IS_BRIEF = NO
+INHERIT_DOCS           = YES
+DISTRIBUTE_GROUP_DOC   = NO
+TAB_SIZE               = 8
+ALIASES                =
+OPTIMIZE_OUTPUT_FOR_C  = YES
+OPTIMIZE_OUTPUT_JAVA   = NO
+SUBGROUPING            = YES
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+EXTRACT_ALL            = NO
+EXTRACT_PRIVATE        = YES
+EXTRACT_STATIC         = YES
+EXTRACT_LOCAL_CLASSES  = YES
+EXTRACT_LOCAL_METHODS  = NO
+HIDE_UNDOC_MEMBERS     = NO
+HIDE_UNDOC_CLASSES     = NO
+HIDE_FRIEND_COMPOUNDS  = NO
+HIDE_IN_BODY_DOCS      = NO
+INTERNAL_DOCS          = NO
+CASE_SENSE_NAMES       = NO
+HIDE_SCOPE_NAMES       = NO
+SHOW_INCLUDE_FILES     = YES
+INLINE_INFO            = YES
+SORT_MEMBER_DOCS       = NO
+SORT_BRIEF_DOCS        = NO
+SORT_BY_SCOPE_NAME     = NO
+GENERATE_TODOLIST      = YES
+GENERATE_TESTLIST      = YES
+GENERATE_BUGLIST       = YES
+GENERATE_DEPRECATEDLIST= YES
+ENABLED_SECTIONS       =
+MAX_INITIALIZER_LINES  = 30
+SHOW_USED_FILES        = YES
+SHOW_DIRECTORIES       = YES
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+QUIET                  = YES
+WARNINGS               = YES
+WARN_IF_UNDOCUMENTED   = NO
+WARN_IF_DOC_ERROR      = YES
+WARN_FORMAT            = "$file:$line: $text"
+WARN_LOGFILE           =
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+INPUT                  = .
+FILE_PATTERNS          = *.c \
+                         *.h \
+                         ./linux/*.c \
+                         ./linux/*.h
+RECURSIVE              = NO
+EXCLUDE                = ./test/ \
+                         ./dwc_otg/.AppleDouble/
+EXCLUDE_SYMLINKS       = YES
+EXCLUDE_PATTERNS       = *.mod.*
+EXAMPLE_PATH           =
+EXAMPLE_PATTERNS       = *
+EXAMPLE_RECURSIVE      = NO
+IMAGE_PATH             =
+INPUT_FILTER           =
+FILTER_PATTERNS        =
+FILTER_SOURCE_FILES    = NO
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+SOURCE_BROWSER         = YES
+INLINE_SOURCES         = NO
+STRIP_CODE_COMMENTS    = YES
+REFERENCED_BY_RELATION = NO
+REFERENCES_RELATION    = NO
+VERBATIM_HEADERS       = NO
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+ALPHABETICAL_INDEX     = NO
+COLS_IN_ALPHA_INDEX    = 5
+IGNORE_PREFIX          =
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+GENERATE_HTML          = YES
+HTML_OUTPUT            = html
+HTML_FILE_EXTENSION    = .html
+HTML_HEADER            =
+HTML_FOOTER            =
+HTML_STYLESHEET        =
+HTML_ALIGN_MEMBERS     = YES
+GENERATE_HTMLHELP      = NO
+CHM_FILE               =
+HHC_LOCATION           =
+GENERATE_CHI           = NO
+BINARY_TOC             = NO
+TOC_EXPAND             = NO
+DISABLE_INDEX          = NO
+ENUM_VALUES_PER_LINE   = 4
+GENERATE_TREEVIEW      = YES
+TREEVIEW_WIDTH         = 250
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+GENERATE_LATEX         = NO
+LATEX_OUTPUT           = latex
+LATEX_CMD_NAME         = latex
+MAKEINDEX_CMD_NAME     = makeindex
+COMPACT_LATEX          = NO
+PAPER_TYPE             = a4wide
+EXTRA_PACKAGES         =
+LATEX_HEADER           =
+PDF_HYPERLINKS         = NO
+USE_PDFLATEX           = NO
+LATEX_BATCHMODE        = NO
+LATEX_HIDE_INDICES     = NO
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+GENERATE_RTF           = NO
+RTF_OUTPUT             = rtf
+COMPACT_RTF            = NO
+RTF_HYPERLINKS         = NO
+RTF_STYLESHEET_FILE    =
+RTF_EXTENSIONS_FILE    =
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+GENERATE_MAN           = NO
+MAN_OUTPUT             = man
+MAN_EXTENSION          = .3
+MAN_LINKS              = NO
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+GENERATE_XML           = NO
+XML_OUTPUT             = xml
+XML_SCHEMA             =
+XML_DTD                =
+XML_PROGRAMLISTING     = YES
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+GENERATE_AUTOGEN_DEF   = NO
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+GENERATE_PERLMOD       = NO
+PERLMOD_LATEX          = NO
+PERLMOD_PRETTY         = YES
+PERLMOD_MAKEVAR_PREFIX =
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor
+#---------------------------------------------------------------------------
+ENABLE_PREPROCESSING   = YES
+MACRO_EXPANSION        = YES
+EXPAND_ONLY_PREDEF     = YES
+SEARCH_INCLUDES        = YES
+INCLUDE_PATH           =
+INCLUDE_FILE_PATTERNS  =
+PREDEFINED             = DEVICE_ATTR DWC_EN_ISOC
+EXPAND_AS_DEFINED      = DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW DWC_OTG_DEVICE_ATTR_BITFIELD_STORE DWC_OTG_DEVICE_ATTR_BITFIELD_RW DWC_OTG_DEVICE_ATTR_BITFIELD_RO DWC_OTG_DEVICE_ATTR_REG_SHOW DWC_OTG_DEVICE_ATTR_REG_STORE DWC_OTG_DEVICE_ATTR_REG32_RW DWC_OTG_DEVICE_ATTR_REG32_RO DWC_EN_ISOC
+SKIP_FUNCTION_MACROS   = NO
+#---------------------------------------------------------------------------
+# Configuration::additions related to external references
+#---------------------------------------------------------------------------
+TAGFILES               =
+GENERATE_TAGFILE       =
+ALLEXTERNALS           = NO
+EXTERNAL_GROUPS        = YES
+PERL_PATH              = /usr/bin/perl
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool
+#---------------------------------------------------------------------------
+CLASS_DIAGRAMS         = YES
+HIDE_UNDOC_RELATIONS   = YES
+HAVE_DOT               = NO
+CLASS_GRAPH            = YES
+COLLABORATION_GRAPH    = YES
+UML_LOOK               = NO
+TEMPLATE_RELATIONS     = NO
+INCLUDE_GRAPH          = YES
+INCLUDED_BY_GRAPH      = YES
+CALL_GRAPH             = NO
+GRAPHICAL_HIERARCHY    = YES
+DOT_IMAGE_FORMAT       = png
+DOT_PATH               =
+DOTFILE_DIRS           =
+MAX_DOT_GRAPH_DEPTH    = 1000
+GENERATE_LEGEND        = YES
+DOT_CLEANUP            = YES
+#---------------------------------------------------------------------------
+# Configuration::additions related to the search engine
+#---------------------------------------------------------------------------
+SEARCHENGINE           = NO
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dummy_audio.c linux-rpi/drivers/usb/host/dwc_otg/dummy_audio.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dummy_audio.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dummy_audio.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,1575 @@
+/*
+ * zero.c -- Gadget Zero, for USB development
+ *
+ * Copyright (C) 2003-2004 David Brownell
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/*
+ * Gadget Zero only needs two bulk endpoints, and is an example of how you
+ * can write a hardware-agnostic gadget driver running inside a USB device.
+ *
+ * Hardware details are visible (see CONFIG_USB_ZERO_* below) but don't
+ * affect most of the driver.
+ *
+ * Use it with the Linux host/master side "usbtest" driver to get a basic
+ * functional test of your device-side usb stack, or with "usb-skeleton".
+ *
+ * It supports two similar configurations.  One sinks whatever the usb host
+ * writes, and in return sources zeroes.  The other loops whatever the host
+ * writes back, so the host can read it.  Module options include:
+ *
+ *   buflen=N		default N=4096, buffer size used
+ *   qlen=N		default N=32, how many buffers in the loopback queue
+ *   loopdefault	default false, list loopback config first
+ *
+ * Many drivers will only have one configuration, letting them be much
+ * simpler if they also don't support high speed operation (like this
+ * driver does).
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/uts.h>
+#include <linux/version.h>
+#include <linux/device.h>
+#include <linux/moduleparam.h>
+#include <linux/proc_fs.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/unaligned.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
+# include <linux/usb/ch9.h>
+#else
+# include <linux/usb_ch9.h>
+#endif
+
+#include <linux/usb_gadget.h>
+
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+
+
+static int utf8_to_utf16le(const char *s, u16 *cp, unsigned len)
+{
+	int	count = 0;
+	u8	c;
+	u16	uchar;
+
+	/* this insists on correct encodings, though not minimal ones.
+	 * BUT it currently rejects legit 4-byte UTF-8 code points,
+	 * which need surrogate pairs.  (Unicode 3.1 can use them.)
+	 */
+	while (len != 0 && (c = (u8) *s++) != 0) {
+		if (unlikely(c & 0x80)) {
+			// 2-byte sequence:
+			// 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+			if ((c & 0xe0) == 0xc0) {
+				uchar = (c & 0x1f) << 6;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c;
+
+			// 3-byte sequence (most CJKV characters):
+			// zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+			} else if ((c & 0xf0) == 0xe0) {
+				uchar = (c & 0x0f) << 12;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c << 6;
+
+				c = (u8) *s++;
+				if ((c & 0xc0) != 0xc0)
+					goto fail;
+				c &= 0x3f;
+				uchar |= c;
+
+				/* no bogus surrogates */
+				if (0xd800 <= uchar && uchar <= 0xdfff)
+					goto fail;
+
+			// 4-byte sequence (surrogate pairs, currently rare):
+			// 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+			//     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+			// (uuuuu = wwww + 1)
+			// FIXME accept the surrogate code points (only)
+
+			} else
+				goto fail;
+		} else
+			uchar = c;
+		put_unaligned (cpu_to_le16 (uchar), cp++);
+		count++;
+		len--;
+	}
+	return count;
+fail:
+	return -1;
+}
+
+
+/**
+ * usb_gadget_get_string - fill out a string descriptor
+ * @table: of c strings encoded using UTF-8
+ * @id: string id, from low byte of wValue in get string descriptor
+ * @buf: at least 256 bytes
+ *
+ * Finds the UTF-8 string matching the ID, and converts it into a
+ * string descriptor in utf16-le.
+ * Returns length of descriptor (always even) or negative errno
+ *
+ * If your driver needs stings in multiple languages, you'll probably
+ * "switch (wIndex) { ... }"  in your ep0 string descriptor logic,
+ * using this routine after choosing which set of UTF-8 strings to use.
+ * Note that US-ASCII is a strict subset of UTF-8; any string bytes with
+ * the eighth bit set will be multibyte UTF-8 characters, not ISO-8859/1
+ * characters (which are also widely used in C strings).
+ */
+int
+usb_gadget_get_string (struct usb_gadget_strings *table, int id, u8 *buf)
+{
+	struct usb_string	*s;
+	int			len;
+
+	/* descriptor 0 has the language id */
+	if (id == 0) {
+		buf [0] = 4;
+		buf [1] = USB_DT_STRING;
+		buf [2] = (u8) table->language;
+		buf [3] = (u8) (table->language >> 8);
+		return 4;
+	}
+	for (s = table->strings; s && s->s; s++)
+		if (s->id == id)
+			break;
+
+	/* unrecognized: stall. */
+	if (!s || !s->s)
+		return -EINVAL;
+
+	/* string descriptors have length, tag, then UTF16-LE text */
+	len = min ((size_t) 126, strlen (s->s));
+	memset (buf + 2, 0, 2 * len);	/* zero all the bytes */
+	len = utf8_to_utf16le(s->s, (u16 *)&buf[2], len);
+	if (len < 0)
+		return -EINVAL;
+	buf [0] = (len + 1) * 2;
+	buf [1] = USB_DT_STRING;
+	return buf [0];
+}
+
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+
+
+/**
+ * usb_descriptor_fillbuf - fill buffer with descriptors
+ * @buf: Buffer to be filled
+ * @buflen: Size of buf
+ * @src: Array of descriptor pointers, terminated by null pointer.
+ *
+ * Copies descriptors into the buffer, returning the length or a
+ * negative error code if they can't all be copied.  Useful when
+ * assembling descriptors for an associated set of interfaces used
+ * as part of configuring a composite device; or in other cases where
+ * sets of descriptors need to be marshaled.
+ */
+int
+usb_descriptor_fillbuf(void *buf, unsigned buflen,
+		const struct usb_descriptor_header **src)
+{
+	u8	*dest = buf;
+
+	if (!src)
+		return -EINVAL;
+
+	/* fill buffer from src[] until null descriptor ptr */
+	for (; 0 != *src; src++) {
+		unsigned		len = (*src)->bLength;
+
+		if (len > buflen)
+			return -EINVAL;
+		memcpy(dest, *src, len);
+		buflen -= len;
+		dest += len;
+	}
+	return dest - (u8 *)buf;
+}
+
+
+/**
+ * usb_gadget_config_buf - builts a complete configuration descriptor
+ * @config: Header for the descriptor, including characteristics such
+ *	as power requirements and number of interfaces.
+ * @desc: Null-terminated vector of pointers to the descriptors (interface,
+ *	endpoint, etc) defining all functions in this device configuration.
+ * @buf: Buffer for the resulting configuration descriptor.
+ * @length: Length of buffer.  If this is not big enough to hold the
+ *	entire configuration descriptor, an error code will be returned.
+ *
+ * This copies descriptors into the response buffer, building a descriptor
+ * for that configuration.  It returns the buffer length or a negative
+ * status code.  The config.wTotalLength field is set to match the length
+ * of the result, but other descriptor fields (including power usage and
+ * interface count) must be set by the caller.
+ *
+ * Gadget drivers could use this when constructing a config descriptor
+ * in response to USB_REQ_GET_DESCRIPTOR.  They will need to patch the
+ * resulting bDescriptorType value if USB_DT_OTHER_SPEED_CONFIG is needed.
+ */
+int usb_gadget_config_buf(
+	const struct usb_config_descriptor	*config,
+	void					*buf,
+	unsigned				length,
+	const struct usb_descriptor_header	**desc
+)
+{
+	struct usb_config_descriptor		*cp = buf;
+	int					len;
+
+	/* config descriptor first */
+	if (length < USB_DT_CONFIG_SIZE || !desc)
+		return -EINVAL;
+	*cp = *config;
+
+	/* then interface/endpoint/class/vendor/... */
+	len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8*)buf,
+			length - USB_DT_CONFIG_SIZE, desc);
+	if (len < 0)
+		return len;
+	len += USB_DT_CONFIG_SIZE;
+	if (len > 0xffff)
+		return -EINVAL;
+
+	/* patch up the config descriptor */
+	cp->bLength = USB_DT_CONFIG_SIZE;
+	cp->bDescriptorType = USB_DT_CONFIG;
+	cp->wTotalLength = cpu_to_le16(len);
+	cp->bmAttributes |= USB_CONFIG_ATT_ONE;
+	return len;
+}
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+
+
+#define RBUF_LEN (1024*1024)
+static int rbuf_start;
+static int rbuf_len;
+static __u8 rbuf[RBUF_LEN];
+
+/*-------------------------------------------------------------------------*/
+
+#define DRIVER_VERSION		"St Patrick's Day 2004"
+
+static const char shortname [] = "zero";
+static const char longname [] = "YAMAHA YST-MS35D USB Speaker  ";
+
+static const char source_sink [] = "source and sink data";
+static const char loopback [] = "loop input to output";
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * driver assumes self-powered hardware, and
+ * has no way for users to trigger remote wakeup.
+ *
+ * this version autoconfigures as much as possible,
+ * which is reasonable for most "bulk-only" drivers.
+ */
+static const char *EP_IN_NAME;		/* source */
+static const char *EP_OUT_NAME;		/* sink */
+
+/*-------------------------------------------------------------------------*/
+
+/* big enough to hold our biggest descriptor */
+#define USB_BUFSIZ	512
+
+struct zero_dev {
+	spinlock_t		lock;
+	struct usb_gadget	*gadget;
+	struct usb_request	*req;		/* for control responses */
+
+	/* when configured, we have one of two configs:
+	 * - source data (in to host) and sink it (out from host)
+	 * - or loop it back (out from host back in to host)
+	 */
+	u8			config;
+	struct usb_ep		*in_ep, *out_ep;
+
+	/* autoresume timer */
+	struct timer_list	resume;
+};
+
+#define xprintk(d,level,fmt,args...) \
+	dev_printk(level , &(d)->gadget->dev , fmt , ## args)
+
+#ifdef DEBUG
+#define DBG(dev,fmt,args...) \
+	xprintk(dev , KERN_DEBUG , fmt , ## args)
+#else
+#define DBG(dev,fmt,args...) \
+	do { } while (0)
+#endif /* DEBUG */
+
+#ifdef VERBOSE
+#define VDBG	DBG
+#else
+#define VDBG(dev,fmt,args...) \
+	do { } while (0)
+#endif /* VERBOSE */
+
+#define ERROR(dev,fmt,args...) \
+	xprintk(dev , KERN_ERR , fmt , ## args)
+#define WARN(dev,fmt,args...) \
+	xprintk(dev , KERN_WARNING , fmt , ## args)
+#define INFO(dev,fmt,args...) \
+	xprintk(dev , KERN_INFO , fmt , ## args)
+
+/*-------------------------------------------------------------------------*/
+
+static unsigned buflen = 4096;
+static unsigned qlen = 32;
+static unsigned pattern = 0;
+
+module_param (buflen, uint, S_IRUGO|S_IWUSR);
+module_param (qlen, uint, S_IRUGO|S_IWUSR);
+module_param (pattern, uint, S_IRUGO|S_IWUSR);
+
+/*
+ * if it's nonzero, autoresume says how many seconds to wait
+ * before trying to wake up the host after suspend.
+ */
+static unsigned autoresume = 0;
+module_param (autoresume, uint, 0);
+
+/*
+ * Normally the "loopback" configuration is second (index 1) so
+ * it's not the default.  Here's where to change that order, to
+ * work better with hosts where config changes are problematic.
+ * Or controllers (like superh) that only support one config.
+ */
+static int loopdefault = 0;
+
+module_param (loopdefault, bool, S_IRUGO|S_IWUSR);
+
+/*-------------------------------------------------------------------------*/
+
+/* Thanks to NetChip Technologies for donating this product ID.
+ *
+ * DO NOT REUSE THESE IDs with a protocol-incompatible driver!!  Ever!!
+ * Instead:  allocate your own, using normal USB-IF procedures.
+ */
+#ifndef	CONFIG_USB_ZERO_HNPTEST
+#define DRIVER_VENDOR_NUM	0x0525		/* NetChip */
+#define DRIVER_PRODUCT_NUM	0xa4a0		/* Linux-USB "Gadget Zero" */
+#else
+#define DRIVER_VENDOR_NUM	0x1a0a		/* OTG test device IDs */
+#define DRIVER_PRODUCT_NUM	0xbadd
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * DESCRIPTORS ... most are static, but strings and (full)
+ * configuration descriptors are built on demand.
+ */
+
+/*
+#define STRING_MANUFACTURER		25
+#define STRING_PRODUCT			42
+#define STRING_SERIAL			101
+*/
+#define STRING_MANUFACTURER		1
+#define STRING_PRODUCT			2
+#define STRING_SERIAL			3
+
+#define STRING_SOURCE_SINK		250
+#define STRING_LOOPBACK			251
+
+/*
+ * This device advertises two configurations; these numbers work
+ * on a pxa250 as well as more flexible hardware.
+ */
+#define	CONFIG_SOURCE_SINK	3
+#define	CONFIG_LOOPBACK		2
+
+/*
+static struct usb_device_descriptor
+device_desc = {
+	.bLength =		sizeof device_desc,
+	.bDescriptorType =	USB_DT_DEVICE,
+
+	.bcdUSB =		__constant_cpu_to_le16 (0x0200),
+	.bDeviceClass =		USB_CLASS_VENDOR_SPEC,
+
+	.idVendor =		__constant_cpu_to_le16 (DRIVER_VENDOR_NUM),
+	.idProduct =		__constant_cpu_to_le16 (DRIVER_PRODUCT_NUM),
+	.iManufacturer =	STRING_MANUFACTURER,
+	.iProduct =		STRING_PRODUCT,
+	.iSerialNumber =	STRING_SERIAL,
+	.bNumConfigurations =	2,
+};
+*/
+static struct usb_device_descriptor
+device_desc = {
+	.bLength =		sizeof device_desc,
+	.bDescriptorType =	USB_DT_DEVICE,
+	.bcdUSB =		__constant_cpu_to_le16 (0x0100),
+	.bDeviceClass =		USB_CLASS_PER_INTERFACE,
+	.bDeviceSubClass =      0,
+	.bDeviceProtocol =      0,
+	.bMaxPacketSize0 =      64,
+	.bcdDevice =            __constant_cpu_to_le16 (0x0100),
+	.idVendor =		__constant_cpu_to_le16 (0x0499),
+	.idProduct =		__constant_cpu_to_le16 (0x3002),
+	.iManufacturer =	STRING_MANUFACTURER,
+	.iProduct =		STRING_PRODUCT,
+	.iSerialNumber =	STRING_SERIAL,
+	.bNumConfigurations =	1,
+};
+
+static struct usb_config_descriptor
+z_config = {
+	.bLength =		sizeof z_config,
+	.bDescriptorType =	USB_DT_CONFIG,
+
+	/* compute wTotalLength on the fly */
+	.bNumInterfaces =	2,
+	.bConfigurationValue =	1,
+	.iConfiguration =	0,
+	.bmAttributes =		0x40,
+	.bMaxPower =		0,	/* self-powered */
+};
+
+
+static struct usb_otg_descriptor
+otg_descriptor = {
+	.bLength =		sizeof otg_descriptor,
+	.bDescriptorType =	USB_DT_OTG,
+
+	.bmAttributes =		USB_OTG_SRP,
+};
+
+/* one interface in each configuration */
+#ifdef	CONFIG_USB_GADGET_DUALSPEED
+
+/*
+ * usb 2.0 devices need to expose both high speed and full speed
+ * descriptors, unless they only run at full speed.
+ *
+ * that means alternate endpoint descriptors (bigger packets)
+ * and a "device qualifier" ... plus more construction options
+ * for the config descriptor.
+ */
+
+static struct usb_qualifier_descriptor
+dev_qualifier = {
+	.bLength =		sizeof dev_qualifier,
+	.bDescriptorType =	USB_DT_DEVICE_QUALIFIER,
+
+	.bcdUSB =		__constant_cpu_to_le16 (0x0200),
+	.bDeviceClass =		USB_CLASS_VENDOR_SPEC,
+
+	.bNumConfigurations =	2,
+};
+
+
+struct usb_cs_as_general_descriptor {
+	__u8  bLength;
+	__u8  bDescriptorType;
+
+	__u8  bDescriptorSubType;
+	__u8  bTerminalLink;
+	__u8  bDelay;
+	__u16  wFormatTag;
+} __attribute__ ((packed));
+
+struct usb_cs_as_format_descriptor {
+	__u8  bLength;
+	__u8  bDescriptorType;
+
+	__u8  bDescriptorSubType;
+	__u8  bFormatType;
+	__u8  bNrChannels;
+	__u8  bSubframeSize;
+	__u8  bBitResolution;
+	__u8  bSamfreqType;
+	__u8  tLowerSamFreq[3];
+	__u8  tUpperSamFreq[3];
+} __attribute__ ((packed));
+
+static const struct usb_interface_descriptor
+z_audio_control_if_desc = {
+	.bLength =		sizeof z_audio_control_if_desc,
+	.bDescriptorType =	USB_DT_INTERFACE,
+	.bInterfaceNumber = 0,
+	.bAlternateSetting = 0,
+	.bNumEndpoints = 0,
+	.bInterfaceClass = USB_CLASS_AUDIO,
+	.bInterfaceSubClass = 0x1,
+	.bInterfaceProtocol = 0,
+	.iInterface = 0,
+};
+
+static const struct usb_interface_descriptor
+z_audio_if_desc = {
+	.bLength =		sizeof z_audio_if_desc,
+	.bDescriptorType =	USB_DT_INTERFACE,
+	.bInterfaceNumber = 1,
+	.bAlternateSetting = 0,
+	.bNumEndpoints = 0,
+	.bInterfaceClass = USB_CLASS_AUDIO,
+	.bInterfaceSubClass = 0x2,
+	.bInterfaceProtocol = 0,
+	.iInterface = 0,
+};
+
+static const struct usb_interface_descriptor
+z_audio_if_desc2 = {
+	.bLength =		sizeof z_audio_if_desc,
+	.bDescriptorType =	USB_DT_INTERFACE,
+	.bInterfaceNumber = 1,
+	.bAlternateSetting = 1,
+	.bNumEndpoints = 1,
+	.bInterfaceClass = USB_CLASS_AUDIO,
+	.bInterfaceSubClass = 0x2,
+	.bInterfaceProtocol = 0,
+	.iInterface = 0,
+};
+
+static const struct usb_cs_as_general_descriptor
+z_audio_cs_as_if_desc = {
+	.bLength = 7,
+	.bDescriptorType = 0x24,
+
+	.bDescriptorSubType = 0x01,
+	.bTerminalLink = 0x01,
+	.bDelay = 0x0,
+	.wFormatTag = __constant_cpu_to_le16 (0x0001)
+};
+
+
+static const struct usb_cs_as_format_descriptor
+z_audio_cs_as_format_desc = {
+	.bLength = 0xe,
+	.bDescriptorType = 0x24,
+
+	.bDescriptorSubType = 2,
+	.bFormatType = 1,
+	.bNrChannels = 1,
+	.bSubframeSize = 1,
+	.bBitResolution = 8,
+	.bSamfreqType = 0,
+	.tLowerSamFreq = {0x7e, 0x13, 0x00},
+	.tUpperSamFreq = {0xe2, 0xd6, 0x00},
+};
+
+static const struct usb_endpoint_descriptor
+z_iso_ep = {
+	.bLength = 0x09,
+	.bDescriptorType = 0x05,
+	.bEndpointAddress = 0x04,
+	.bmAttributes = 0x09,
+	.wMaxPacketSize = 0x0038,
+	.bInterval = 0x01,
+	.bRefresh = 0x00,
+	.bSynchAddress = 0x00,
+};
+
+static char z_iso_ep2[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+// 9 bytes
+static char z_ac_interface_header_desc[] =
+{ 0x09, 0x24, 0x01, 0x00, 0x01, 0x2b, 0x00, 0x01, 0x01 };
+
+// 12 bytes
+static char z_0[] = {0x0c, 0x24, 0x02, 0x01, 0x01, 0x01, 0x00, 0x02,
+		     0x03, 0x00, 0x00, 0x00};
+// 13 bytes
+static char z_1[] = {0x0d, 0x24, 0x06, 0x02, 0x01, 0x02, 0x15, 0x00,
+		     0x02, 0x00, 0x02, 0x00, 0x00};
+// 9 bytes
+static char z_2[] = {0x09, 0x24, 0x03, 0x03, 0x01, 0x03, 0x00, 0x02,
+		     0x00};
+
+static char za_0[] = {0x09, 0x04, 0x01, 0x02, 0x01, 0x01, 0x02, 0x00,
+		      0x00};
+
+static char za_1[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_2[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x01, 0x08, 0x00,
+		      0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_3[] = {0x09, 0x05, 0x04, 0x09, 0x70, 0x00, 0x01, 0x00,
+		      0x00};
+
+static char za_4[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_5[] = {0x09, 0x04, 0x01, 0x03, 0x01, 0x01, 0x02, 0x00,
+		      0x00};
+
+static char za_6[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_7[] = {0x0e, 0x24, 0x02, 0x01, 0x01, 0x02, 0x10, 0x00,
+		      0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_8[] = {0x09, 0x05, 0x04, 0x09, 0x70, 0x00, 0x01, 0x00,
+		      0x00};
+
+static char za_9[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_10[] = {0x09, 0x04, 0x01, 0x04, 0x01, 0x01, 0x02, 0x00,
+		       0x00};
+
+static char za_11[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_12[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x02, 0x10, 0x00,
+		       0x73, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_13[] = {0x09, 0x05, 0x04, 0x09, 0xe0, 0x00, 0x01, 0x00,
+		       0x00};
+
+static char za_14[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_15[] = {0x09, 0x04, 0x01, 0x05, 0x01, 0x01, 0x02, 0x00,
+		       0x00};
+
+static char za_16[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_17[] = {0x0e, 0x24, 0x02, 0x01, 0x01, 0x03, 0x14, 0x00,
+		       0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_18[] = {0x09, 0x05, 0x04, 0x09, 0xa8, 0x00, 0x01, 0x00,
+		       0x00};
+
+static char za_19[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_20[] = {0x09, 0x04, 0x01, 0x06, 0x01, 0x01, 0x02, 0x00,
+		       0x00};
+
+static char za_21[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_22[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x03, 0x14, 0x00,
+		       0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_23[] = {0x09, 0x05, 0x04, 0x09, 0x50, 0x01, 0x01, 0x00,
+		       0x00};
+
+static char za_24[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+
+
+static const struct usb_descriptor_header *z_function [] = {
+	(struct usb_descriptor_header *) &z_audio_control_if_desc,
+	(struct usb_descriptor_header *) &z_ac_interface_header_desc,
+	(struct usb_descriptor_header *) &z_0,
+	(struct usb_descriptor_header *) &z_1,
+	(struct usb_descriptor_header *) &z_2,
+	(struct usb_descriptor_header *) &z_audio_if_desc,
+	(struct usb_descriptor_header *) &z_audio_if_desc2,
+	(struct usb_descriptor_header *) &z_audio_cs_as_if_desc,
+	(struct usb_descriptor_header *) &z_audio_cs_as_format_desc,
+	(struct usb_descriptor_header *) &z_iso_ep,
+	(struct usb_descriptor_header *) &z_iso_ep2,
+	(struct usb_descriptor_header *) &za_0,
+	(struct usb_descriptor_header *) &za_1,
+	(struct usb_descriptor_header *) &za_2,
+	(struct usb_descriptor_header *) &za_3,
+	(struct usb_descriptor_header *) &za_4,
+	(struct usb_descriptor_header *) &za_5,
+	(struct usb_descriptor_header *) &za_6,
+	(struct usb_descriptor_header *) &za_7,
+	(struct usb_descriptor_header *) &za_8,
+	(struct usb_descriptor_header *) &za_9,
+	(struct usb_descriptor_header *) &za_10,
+	(struct usb_descriptor_header *) &za_11,
+	(struct usb_descriptor_header *) &za_12,
+	(struct usb_descriptor_header *) &za_13,
+	(struct usb_descriptor_header *) &za_14,
+	(struct usb_descriptor_header *) &za_15,
+	(struct usb_descriptor_header *) &za_16,
+	(struct usb_descriptor_header *) &za_17,
+	(struct usb_descriptor_header *) &za_18,
+	(struct usb_descriptor_header *) &za_19,
+	(struct usb_descriptor_header *) &za_20,
+	(struct usb_descriptor_header *) &za_21,
+	(struct usb_descriptor_header *) &za_22,
+	(struct usb_descriptor_header *) &za_23,
+	(struct usb_descriptor_header *) &za_24,
+	NULL,
+};
+
+/* maxpacket and other transfer characteristics vary by speed. */
+#define ep_desc(g,hs,fs) (((g)->speed==USB_SPEED_HIGH)?(hs):(fs))
+
+#else
+
+/* if there's no high speed support, maxpacket doesn't change. */
+#define ep_desc(g,hs,fs) fs
+
+#endif	/* !CONFIG_USB_GADGET_DUALSPEED */
+
+static char				manufacturer [40];
+//static char				serial [40];
+static char				serial [] = "Ser 00 em";
+
+/* static strings, in UTF-8 */
+static struct usb_string		strings [] = {
+	{ STRING_MANUFACTURER, manufacturer, },
+	{ STRING_PRODUCT, longname, },
+	{ STRING_SERIAL, serial, },
+	{ STRING_LOOPBACK, loopback, },
+	{ STRING_SOURCE_SINK, source_sink, },
+	{  }			/* end of list */
+};
+
+static struct usb_gadget_strings	stringtab = {
+	.language	= 0x0409,	/* en-us */
+	.strings	= strings,
+};
+
+/*
+ * config descriptors are also handcrafted.  these must agree with code
+ * that sets configurations, and with code managing interfaces and their
+ * altsettings.  other complexity may come from:
+ *
+ *  - high speed support, including "other speed config" rules
+ *  - multiple configurations
+ *  - interfaces with alternate settings
+ *  - embedded class or vendor-specific descriptors
+ *
+ * this handles high speed, and has a second config that could as easily
+ * have been an alternate interface setting (on most hardware).
+ *
+ * NOTE:  to demonstrate (and test) more USB capabilities, this driver
+ * should include an altsetting to test interrupt transfers, including
+ * high bandwidth modes at high speed.  (Maybe work like Intel's test
+ * device?)
+ */
+static int
+config_buf (struct usb_gadget *gadget, u8 *buf, u8 type, unsigned index)
+{
+	int len;
+	const struct usb_descriptor_header **function;
+
+	function = z_function;
+	len = usb_gadget_config_buf (&z_config, buf, USB_BUFSIZ, function);
+	if (len < 0)
+		return len;
+	((struct usb_config_descriptor *) buf)->bDescriptorType = type;
+	return len;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_request *
+alloc_ep_req (struct usb_ep *ep, unsigned length)
+{
+	struct usb_request	*req;
+
+	req = usb_ep_alloc_request (ep, GFP_ATOMIC);
+	if (req) {
+		req->length = length;
+		req->buf = usb_ep_alloc_buffer (ep, length,
+				&req->dma, GFP_ATOMIC);
+		if (!req->buf) {
+			usb_ep_free_request (ep, req);
+			req = NULL;
+		}
+	}
+	return req;
+}
+
+static void free_ep_req (struct usb_ep *ep, struct usb_request *req)
+{
+	if (req->buf)
+		usb_ep_free_buffer (ep, req->buf, req->dma, req->length);
+	usb_ep_free_request (ep, req);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* optionally require specific source/sink data patterns  */
+
+static int
+check_read_data (
+	struct zero_dev		*dev,
+	struct usb_ep		*ep,
+	struct usb_request	*req
+)
+{
+	unsigned	i;
+	u8		*buf = req->buf;
+
+	for (i = 0; i < req->actual; i++, buf++) {
+		switch (pattern) {
+		/* all-zeroes has no synchronization issues */
+		case 0:
+			if (*buf == 0)
+				continue;
+			break;
+		/* mod63 stays in sync with short-terminated transfers,
+		 * or otherwise when host and gadget agree on how large
+		 * each usb transfer request should be.  resync is done
+		 * with set_interface or set_config.
+		 */
+		case 1:
+			if (*buf == (u8)(i % 63))
+				continue;
+			break;
+		}
+		ERROR (dev, "bad OUT byte, buf [%d] = %d\n", i, *buf);
+		usb_ep_set_halt (ep);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void zero_reset_config (struct zero_dev *dev)
+{
+	if (dev->config == 0)
+		return;
+
+	DBG (dev, "reset config\n");
+
+	/* just disable endpoints, forcing completion of pending i/o.
+	 * all our completion handlers free their requests in this case.
+	 */
+	if (dev->in_ep) {
+		usb_ep_disable (dev->in_ep);
+		dev->in_ep = NULL;
+	}
+	if (dev->out_ep) {
+		usb_ep_disable (dev->out_ep);
+		dev->out_ep = NULL;
+	}
+	dev->config = 0;
+	del_timer (&dev->resume);
+}
+
+#define _write(f, buf, sz) (f->f_op->write(f, buf, sz, &f->f_pos))
+
+static void
+zero_isoc_complete (struct usb_ep *ep, struct usb_request *req)
+{
+	struct zero_dev	*dev = ep->driver_data;
+	int		status = req->status;
+	int i, j;
+
+	switch (status) {
+
+	case 0: 			/* normal completion? */
+		//printk ("\nzero ---------------> isoc normal completion %d bytes\n", req->actual);
+		for (i=0, j=rbuf_start; i<req->actual; i++) {
+			//printk ("%02x ", ((__u8*)req->buf)[i]);
+			rbuf[j] = ((__u8*)req->buf)[i];
+			j++;
+			if (j >= RBUF_LEN) j=0;
+		}
+		rbuf_start = j;
+		//printk ("\n\n");
+
+		if (rbuf_len < RBUF_LEN) {
+			rbuf_len += req->actual;
+			if (rbuf_len > RBUF_LEN) {
+				rbuf_len = RBUF_LEN;
+			}
+		}
+
+		break;
+
+	/* this endpoint is normally active while we're configured */
+	case -ECONNABORTED: 		/* hardware forced ep reset */
+	case -ECONNRESET:		/* request dequeued */
+	case -ESHUTDOWN:		/* disconnect from host */
+		VDBG (dev, "%s gone (%d), %d/%d\n", ep->name, status,
+				req->actual, req->length);
+		if (ep == dev->out_ep)
+			check_read_data (dev, ep, req);
+		free_ep_req (ep, req);
+		return;
+
+	case -EOVERFLOW:		/* buffer overrun on read means that
+					 * we didn't provide a big enough
+					 * buffer.
+					 */
+	default:
+#if 1
+		DBG (dev, "%s complete --> %d, %d/%d\n", ep->name,
+				status, req->actual, req->length);
+#endif
+	case -EREMOTEIO:		/* short read */
+		break;
+	}
+
+	status = usb_ep_queue (ep, req, GFP_ATOMIC);
+	if (status) {
+		ERROR (dev, "kill %s:  resubmit %d bytes --> %d\n",
+				ep->name, req->length, status);
+		usb_ep_set_halt (ep);
+		/* FIXME recover later ... somehow */
+	}
+}
+
+static struct usb_request *
+zero_start_isoc_ep (struct usb_ep *ep, int gfp_flags)
+{
+	struct usb_request	*req;
+	int			status;
+
+	req = alloc_ep_req (ep, 512);
+	if (!req)
+		return NULL;
+
+	req->complete = zero_isoc_complete;
+
+	status = usb_ep_queue (ep, req, gfp_flags);
+	if (status) {
+		struct zero_dev	*dev = ep->driver_data;
+
+		ERROR (dev, "start %s --> %d\n", ep->name, status);
+		free_ep_req (ep, req);
+		req = NULL;
+	}
+
+	return req;
+}
+
+/* change our operational config.  this code must agree with the code
+ * that returns config descriptors, and altsetting code.
+ *
+ * it's also responsible for power management interactions. some
+ * configurations might not work with our current power sources.
+ *
+ * note that some device controller hardware will constrain what this
+ * code can do, perhaps by disallowing more than one configuration or
+ * by limiting configuration choices (like the pxa2xx).
+ */
+static int
+zero_set_config (struct zero_dev *dev, unsigned number, int gfp_flags)
+{
+	int			result = 0;
+	struct usb_gadget	*gadget = dev->gadget;
+	const struct usb_endpoint_descriptor	*d;
+	struct usb_ep		*ep;
+
+	if (number == dev->config)
+		return 0;
+
+	zero_reset_config (dev);
+
+	gadget_for_each_ep (ep, gadget) {
+
+		if (strcmp (ep->name, "ep4") == 0) {
+
+			d = (struct usb_endpoint_descripter *)&za_23; // isoc ep desc for audio i/f alt setting 6
+			result = usb_ep_enable (ep, d);
+
+			if (result == 0) {
+				ep->driver_data = dev;
+				dev->in_ep = ep;
+
+				if (zero_start_isoc_ep (ep, gfp_flags) != 0) {
+
+					dev->in_ep = ep;
+					continue;
+				}
+
+				usb_ep_disable (ep);
+				result = -EIO;
+			}
+		}
+
+	}
+
+	dev->config = number;
+	return result;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void zero_setup_complete (struct usb_ep *ep, struct usb_request *req)
+{
+	if (req->status || req->actual != req->length)
+		DBG ((struct zero_dev *) ep->driver_data,
+				"setup complete --> %d, %d/%d\n",
+				req->status, req->actual, req->length);
+}
+
+/*
+ * The setup() callback implements all the ep0 functionality that's
+ * not handled lower down, in hardware or the hardware driver (like
+ * device and endpoint feature flags, and their status).  It's all
+ * housekeeping for the gadget function we're implementing.  Most of
+ * the work is in config-specific setup.
+ */
+static int
+zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+{
+	struct zero_dev		*dev = get_gadget_data (gadget);
+	struct usb_request	*req = dev->req;
+	int			value = -EOPNOTSUPP;
+
+	/* usually this stores reply data in the pre-allocated ep0 buffer,
+	 * but config change events will reconfigure hardware.
+	 */
+	req->zero = 0;
+	switch (ctrl->bRequest) {
+
+	case USB_REQ_GET_DESCRIPTOR:
+
+		switch (ctrl->wValue >> 8) {
+
+		case USB_DT_DEVICE:
+			value = min (ctrl->wLength, (u16) sizeof device_desc);
+			memcpy (req->buf, &device_desc, value);
+			break;
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+		case USB_DT_DEVICE_QUALIFIER:
+			if (!gadget->is_dualspeed)
+				break;
+			value = min (ctrl->wLength, (u16) sizeof dev_qualifier);
+			memcpy (req->buf, &dev_qualifier, value);
+			break;
+
+		case USB_DT_OTHER_SPEED_CONFIG:
+			if (!gadget->is_dualspeed)
+				break;
+			// FALLTHROUGH
+#endif /* CONFIG_USB_GADGET_DUALSPEED */
+		case USB_DT_CONFIG:
+			value = config_buf (gadget, req->buf,
+					ctrl->wValue >> 8,
+					ctrl->wValue & 0xff);
+			if (value >= 0)
+				value = min (ctrl->wLength, (u16) value);
+			break;
+
+		case USB_DT_STRING:
+			/* wIndex == language code.
+			 * this driver only handles one language, you can
+			 * add string tables for other languages, using
+			 * any UTF-8 characters
+			 */
+			value = usb_gadget_get_string (&stringtab,
+					ctrl->wValue & 0xff, req->buf);
+			if (value >= 0) {
+				value = min (ctrl->wLength, (u16) value);
+			}
+			break;
+		}
+		break;
+
+	/* currently two configs, two speeds */
+	case USB_REQ_SET_CONFIGURATION:
+		if (ctrl->bRequestType != 0)
+			goto unknown;
+
+		spin_lock (&dev->lock);
+		value = zero_set_config (dev, ctrl->wValue, GFP_ATOMIC);
+		spin_unlock (&dev->lock);
+		break;
+	case USB_REQ_GET_CONFIGURATION:
+		if (ctrl->bRequestType != USB_DIR_IN)
+			goto unknown;
+		*(u8 *)req->buf = dev->config;
+		value = min (ctrl->wLength, (u16) 1);
+		break;
+
+	/* until we add altsetting support, or other interfaces,
+	 * only 0/0 are possible.  pxa2xx only supports 0/0 (poorly)
+	 * and already killed pending endpoint I/O.
+	 */
+	case USB_REQ_SET_INTERFACE:
+
+		if (ctrl->bRequestType != USB_RECIP_INTERFACE)
+			goto unknown;
+		spin_lock (&dev->lock);
+		if (dev->config) {
+			u8		config = dev->config;
+
+			/* resets interface configuration, forgets about
+			 * previous transaction state (queued bufs, etc)
+			 * and re-inits endpoint state (toggle etc)
+			 * no response queued, just zero status == success.
+			 * if we had more than one interface we couldn't
+			 * use this "reset the config" shortcut.
+			 */
+			zero_reset_config (dev);
+			zero_set_config (dev, config, GFP_ATOMIC);
+			value = 0;
+		}
+		spin_unlock (&dev->lock);
+		break;
+	case USB_REQ_GET_INTERFACE:
+		if ((ctrl->bRequestType == 0x21) && (ctrl->wIndex == 0x02)) {
+			value = ctrl->wLength;
+			break;
+		}
+		else {
+			if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE))
+				goto unknown;
+			if (!dev->config)
+				break;
+			if (ctrl->wIndex != 0) {
+				value = -EDOM;
+				break;
+			}
+			*(u8 *)req->buf = 0;
+			value = min (ctrl->wLength, (u16) 1);
+		}
+		break;
+
+	/*
+	 * These are the same vendor-specific requests supported by
+	 * Intel's USB 2.0 compliance test devices.  We exceed that
+	 * device spec by allowing multiple-packet requests.
+	 */
+	case 0x5b:	/* control WRITE test -- fill the buffer */
+		if (ctrl->bRequestType != (USB_DIR_OUT|USB_TYPE_VENDOR))
+			goto unknown;
+		if (ctrl->wValue || ctrl->wIndex)
+			break;
+		/* just read that many bytes into the buffer */
+		if (ctrl->wLength > USB_BUFSIZ)
+			break;
+		value = ctrl->wLength;
+		break;
+	case 0x5c:	/* control READ test -- return the buffer */
+		if (ctrl->bRequestType != (USB_DIR_IN|USB_TYPE_VENDOR))
+			goto unknown;
+		if (ctrl->wValue || ctrl->wIndex)
+			break;
+		/* expect those bytes are still in the buffer; send back */
+		if (ctrl->wLength > USB_BUFSIZ
+				|| ctrl->wLength != req->length)
+			break;
+		value = ctrl->wLength;
+		break;
+
+	case 0x01: // SET_CUR
+	case 0x02:
+	case 0x03:
+	case 0x04:
+	case 0x05:
+		value = ctrl->wLength;
+		break;
+	case 0x81:
+		switch (ctrl->wValue) {
+		case 0x0201:
+		case 0x0202:
+			((u8*)req->buf)[0] = 0x00;
+			((u8*)req->buf)[1] = 0xe3;
+			break;
+		case 0x0300:
+		case 0x0500:
+			((u8*)req->buf)[0] = 0x00;
+			break;
+		}
+		//((u8*)req->buf)[0] = 0x81;
+		//((u8*)req->buf)[1] = 0x81;
+		value = ctrl->wLength;
+		break;
+	case 0x82:
+		switch (ctrl->wValue) {
+		case 0x0201:
+		case 0x0202:
+			((u8*)req->buf)[0] = 0x00;
+			((u8*)req->buf)[1] = 0xc3;
+			break;
+		case 0x0300:
+		case 0x0500:
+			((u8*)req->buf)[0] = 0x00;
+			break;
+		}
+		//((u8*)req->buf)[0] = 0x82;
+		//((u8*)req->buf)[1] = 0x82;
+		value = ctrl->wLength;
+		break;
+	case 0x83:
+		switch (ctrl->wValue) {
+		case 0x0201:
+		case 0x0202:
+			((u8*)req->buf)[0] = 0x00;
+			((u8*)req->buf)[1] = 0x00;
+			break;
+		case 0x0300:
+			((u8*)req->buf)[0] = 0x60;
+			break;
+		case 0x0500:
+			((u8*)req->buf)[0] = 0x18;
+			break;
+		}
+		//((u8*)req->buf)[0] = 0x83;
+		//((u8*)req->buf)[1] = 0x83;
+		value = ctrl->wLength;
+		break;
+	case 0x84:
+		switch (ctrl->wValue) {
+		case 0x0201:
+		case 0x0202:
+			((u8*)req->buf)[0] = 0x00;
+			((u8*)req->buf)[1] = 0x01;
+			break;
+		case 0x0300:
+		case 0x0500:
+			((u8*)req->buf)[0] = 0x08;
+			break;
+		}
+		//((u8*)req->buf)[0] = 0x84;
+		//((u8*)req->buf)[1] = 0x84;
+		value = ctrl->wLength;
+		break;
+	case 0x85:
+		((u8*)req->buf)[0] = 0x85;
+		((u8*)req->buf)[1] = 0x85;
+		value = ctrl->wLength;
+		break;
+
+
+	default:
+unknown:
+		printk("unknown control req%02x.%02x v%04x i%04x l%d\n",
+			ctrl->bRequestType, ctrl->bRequest,
+			ctrl->wValue, ctrl->wIndex, ctrl->wLength);
+	}
+
+	/* respond with data transfer before status phase? */
+	if (value >= 0) {
+		req->length = value;
+		req->zero = value < ctrl->wLength
+				&& (value % gadget->ep0->maxpacket) == 0;
+		value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
+		if (value < 0) {
+			DBG (dev, "ep_queue < 0 --> %d\n", value);
+			req->status = 0;
+			zero_setup_complete (gadget->ep0, req);
+		}
+	}
+
+	/* device either stalls (value < 0) or reports success */
+	return value;
+}
+
+static void
+zero_disconnect (struct usb_gadget *gadget)
+{
+	struct zero_dev		*dev = get_gadget_data (gadget);
+	unsigned long		flags;
+
+	spin_lock_irqsave (&dev->lock, flags);
+	zero_reset_config (dev);
+
+	/* a more significant application might have some non-usb
+	 * activities to quiesce here, saving resources like power
+	 * or pushing the notification up a network stack.
+	 */
+	spin_unlock_irqrestore (&dev->lock, flags);
+
+	/* next we may get setup() calls to enumerate new connections;
+	 * or an unbind() during shutdown (including removing module).
+	 */
+}
+
+static void
+zero_autoresume (unsigned long _dev)
+{
+	struct zero_dev	*dev = (struct zero_dev *) _dev;
+	int		status;
+
+	/* normally the host would be woken up for something
+	 * more significant than just a timer firing...
+	 */
+	if (dev->gadget->speed != USB_SPEED_UNKNOWN) {
+		status = usb_gadget_wakeup (dev->gadget);
+		DBG (dev, "wakeup --> %d\n", status);
+	}
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void
+zero_unbind (struct usb_gadget *gadget)
+{
+	struct zero_dev		*dev = get_gadget_data (gadget);
+
+	DBG (dev, "unbind\n");
+
+	/* we've already been disconnected ... no i/o is active */
+	if (dev->req)
+		free_ep_req (gadget->ep0, dev->req);
+	del_timer_sync (&dev->resume);
+	kfree (dev);
+	set_gadget_data (gadget, NULL);
+}
+
+static int
+zero_bind (struct usb_gadget *gadget)
+{
+	struct zero_dev		*dev;
+	//struct usb_ep		*ep;
+
+	printk("binding\n");
+	/*
+	 * DRIVER POLICY CHOICE:  you may want to do this differently.
+	 * One thing to avoid is reusing a bcdDevice revision code
+	 * with different host-visible configurations or behavior
+	 * restrictions -- using ep1in/ep2out vs ep1out/ep3in, etc
+	 */
+	//device_desc.bcdDevice = __constant_cpu_to_le16 (0x0201);
+
+
+	/* ok, we made sense of the hardware ... */
+	dev = kmalloc (sizeof *dev, SLAB_KERNEL);
+	if (!dev)
+		return -ENOMEM;
+	memset (dev, 0, sizeof *dev);
+	spin_lock_init (&dev->lock);
+	dev->gadget = gadget;
+	set_gadget_data (gadget, dev);
+
+	/* preallocate control response and buffer */
+	dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL);
+	if (!dev->req)
+		goto enomem;
+	dev->req->buf = usb_ep_alloc_buffer (gadget->ep0, USB_BUFSIZ,
+				&dev->req->dma, GFP_KERNEL);
+	if (!dev->req->buf)
+		goto enomem;
+
+	dev->req->complete = zero_setup_complete;
+
+	device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
+
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+	/* assume ep0 uses the same value for both speeds ... */
+	dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0;
+
+	/* and that all endpoints are dual-speed */
+	//hs_source_desc.bEndpointAddress = fs_source_desc.bEndpointAddress;
+	//hs_sink_desc.bEndpointAddress = fs_sink_desc.bEndpointAddress;
+#endif
+
+	usb_gadget_set_selfpowered (gadget);
+
+	init_timer (&dev->resume);
+	dev->resume.function = zero_autoresume;
+	dev->resume.data = (unsigned long) dev;
+
+	gadget->ep0->driver_data = dev;
+
+	INFO (dev, "%s, version: " DRIVER_VERSION "\n", longname);
+	INFO (dev, "using %s, OUT %s IN %s\n", gadget->name,
+		EP_OUT_NAME, EP_IN_NAME);
+
+	snprintf (manufacturer, sizeof manufacturer,
+		UTS_SYSNAME " " UTS_RELEASE " with %s",
+		gadget->name);
+
+	return 0;
+
+enomem:
+	zero_unbind (gadget);
+	return -ENOMEM;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void
+zero_suspend (struct usb_gadget *gadget)
+{
+	struct zero_dev		*dev = get_gadget_data (gadget);
+
+	if (gadget->speed == USB_SPEED_UNKNOWN)
+		return;
+
+	if (autoresume) {
+		mod_timer (&dev->resume, jiffies + (HZ * autoresume));
+		DBG (dev, "suspend, wakeup in %d seconds\n", autoresume);
+	} else
+		DBG (dev, "suspend\n");
+}
+
+static void
+zero_resume (struct usb_gadget *gadget)
+{
+	struct zero_dev		*dev = get_gadget_data (gadget);
+
+	DBG (dev, "resume\n");
+	del_timer (&dev->resume);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_gadget_driver zero_driver = {
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+	.speed		= USB_SPEED_HIGH,
+#else
+	.speed		= USB_SPEED_FULL,
+#endif
+	.function	= (char *) longname,
+	.bind		= zero_bind,
+	.unbind		= zero_unbind,
+
+	.setup		= zero_setup,
+	.disconnect	= zero_disconnect,
+
+	.suspend	= zero_suspend,
+	.resume		= zero_resume,
+
+	.driver 	= {
+		.name		= (char *) shortname,
+		// .shutdown = ...
+		// .suspend = ...
+		// .resume = ...
+	},
+};
+
+MODULE_AUTHOR ("David Brownell");
+MODULE_LICENSE ("Dual BSD/GPL");
+
+static struct proc_dir_entry *pdir, *pfile;
+
+static int isoc_read_data (char *page, char **start,
+			   off_t off, int count,
+			   int *eof, void *data)
+{
+	int i;
+	static int c = 0;
+	static int done = 0;
+	static int s = 0;
+
+/*
+	printk ("\ncount: %d\n", count);
+	printk ("rbuf_start: %d\n", rbuf_start);
+	printk ("rbuf_len: %d\n", rbuf_len);
+	printk ("off: %d\n", off);
+	printk ("start: %p\n\n", *start);
+*/
+	if (done) {
+		c = 0;
+		done = 0;
+		*eof = 1;
+		return 0;
+	}
+
+	if (c == 0) {
+		if (rbuf_len == RBUF_LEN)
+			s = rbuf_start;
+		else s = 0;
+	}
+
+	for (i=0; i<count && c<rbuf_len; i++, c++) {
+		page[i] = rbuf[(c+s) % RBUF_LEN];
+	}
+	*start = page;
+
+	if (c >= rbuf_len) {
+		*eof = 1;
+		done = 1;
+	}
+
+
+	return i;
+}
+
+static int __init init (void)
+{
+
+	int retval = 0;
+
+	pdir = proc_mkdir("isoc_test", NULL);
+	if(pdir == NULL) {
+		retval = -ENOMEM;
+		printk("Error creating dir\n");
+		goto done;
+	}
+	pdir->owner = THIS_MODULE;
+
+	pfile = create_proc_read_entry("isoc_data",
+				       0444, pdir,
+				       isoc_read_data,
+				       NULL);
+	if (pfile == NULL) {
+		retval = -ENOMEM;
+		printk("Error creating file\n");
+		goto no_file;
+	}
+	pfile->owner = THIS_MODULE;
+
+	return usb_gadget_register_driver (&zero_driver);
+
+ no_file:
+	remove_proc_entry("isoc_data", NULL);
+ done:
+	return retval;
+}
+module_init (init);
+
+static void __exit cleanup (void)
+{
+
+	usb_gadget_unregister_driver (&zero_driver);
+
+	remove_proc_entry("isoc_data", pdir);
+	remove_proc_entry("isoc_test", NULL);
+}
+module_exit (cleanup);
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_cfi_common.h linux-rpi/drivers/usb/host/dwc_otg/dwc_cfi_common.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_cfi_common.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_cfi_common.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,142 @@
+/* ==========================================================================
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_CFI_COMMON_H__)
+#define __DWC_CFI_COMMON_H__
+
+//#include <linux/types.h>
+
+/**
+ * @file
+ *
+ * This file contains the CFI specific common constants, interfaces
+ * (functions and macros) and structures for Linux. No PCD specific
+ * data structure or definition is to be included in this file.
+ *
+ */
+
+/** This is a request for all Core Features */
+#define VEN_CORE_GET_FEATURES		0xB1
+
+/** This is a request to get the value of a specific Core Feature */
+#define VEN_CORE_GET_FEATURE		0xB2
+
+/** This command allows the host to set the value of a specific Core Feature */
+#define VEN_CORE_SET_FEATURE		0xB3
+
+/** This command allows the host to set the default values of
+ * either all or any specific Core Feature
+ */
+#define VEN_CORE_RESET_FEATURES		0xB4
+
+/** This command forces the PCD to write the deferred values of a Core Features */
+#define VEN_CORE_ACTIVATE_FEATURES	0xB5
+
+/** This request reads a DWORD value from a register at the specified offset */
+#define VEN_CORE_READ_REGISTER		0xB6
+
+/** This request writes a DWORD value into a register at the specified offset */
+#define VEN_CORE_WRITE_REGISTER		0xB7
+
+/** This structure is the header of the Core Features dataset returned to
+ *  the Host
+ */
+struct cfi_all_features_header {
+/** The features header structure length is */
+#define CFI_ALL_FEATURES_HDR_LEN		8
+	/**
+	 * The total length of the features dataset returned to the Host
+	 */
+	uint16_t wTotalLen;
+
+	/**
+	 * CFI version number inBinary-Coded Decimal (i.e., 1.00 is 100H).
+	 * This field identifies the version of the CFI Specification with which
+	 * the device is compliant.
+	 */
+	uint16_t wVersion;
+
+	/** The ID of the Core */
+	uint16_t wCoreID;
+#define CFI_CORE_ID_UDC		1
+#define CFI_CORE_ID_OTG		2
+#define CFI_CORE_ID_WUDEV	3
+
+	/** Number of features returned by VEN_CORE_GET_FEATURES request */
+	uint16_t wNumFeatures;
+} UPACKED;
+
+typedef struct cfi_all_features_header cfi_all_features_header_t;
+
+/** This structure is a header of the Core Feature descriptor dataset returned to
+ *  the Host after the VEN_CORE_GET_FEATURES request
+ */
+struct cfi_feature_desc_header {
+#define CFI_FEATURE_DESC_HDR_LEN	8
+
+	/** The feature ID */
+	uint16_t wFeatureID;
+
+	/** Length of this feature descriptor in bytes - including the
+	 * length of the feature name string
+	 */
+	uint16_t wLength;
+
+	/** The data length of this feature in bytes */
+	uint16_t wDataLength;
+
+	/**
+	 * Attributes of this features
+	 * D0: Access rights
+	 * 0 - Read/Write
+	 * 1 - Read only
+	 */
+	uint8_t bmAttributes;
+#define CFI_FEATURE_ATTR_RO		1
+#define CFI_FEATURE_ATTR_RW		0
+
+	/** Length of the feature name in bytes */
+	uint8_t bNameLen;
+
+	/** The feature name buffer */
+	//uint8_t *name;
+} UPACKED;
+
+typedef struct cfi_feature_desc_header cfi_feature_desc_header_t;
+
+/**
+ * This structure describes a NULL terminated string referenced by its id field.
+ * It is very similar to usb_string structure but has the id field type set to 16-bit.
+ */
+struct cfi_string {
+	uint16_t id;
+	const uint8_t *s;
+};
+typedef struct cfi_string cfi_string_t;
+
+#endif
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_adp.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_adp.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_adp.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_adp.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,854 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_adp.c $
+ * $Revision: #12 $
+ * $Date: 2011/10/26 $
+ * $Change: 1873028 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#include "dwc_os.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_adp.h"
+
+/** @file
+ *
+ * This file contains the most of the Attach Detect Protocol implementation for
+ * the driver to support OTG Rev2.0.
+ *
+ */
+
+void dwc_otg_adp_write_reg(dwc_otg_core_if_t * core_if, uint32_t value)
+{
+	adpctl_data_t adpctl;
+
+	adpctl.d32 = value;
+	adpctl.b.ar = 0x2;
+
+	DWC_WRITE_REG32(&core_if->core_global_regs->adpctl, adpctl.d32);
+
+	while (adpctl.b.ar) {
+		adpctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->adpctl);
+	}
+
+}
+
+/**
+ * Function is called to read ADP registers
+ */
+uint32_t dwc_otg_adp_read_reg(dwc_otg_core_if_t * core_if)
+{
+	adpctl_data_t adpctl;
+
+	adpctl.d32 = 0;
+	adpctl.b.ar = 0x1;
+
+	DWC_WRITE_REG32(&core_if->core_global_regs->adpctl, adpctl.d32);
+
+	while (adpctl.b.ar) {
+		adpctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->adpctl);
+	}
+
+	return adpctl.d32;
+}
+
+/**
+ * Function is called to read ADPCTL register and filter Write-clear bits
+ */
+uint32_t dwc_otg_adp_read_reg_filter(dwc_otg_core_if_t * core_if)
+{
+	adpctl_data_t adpctl;
+
+	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+	adpctl.b.adp_tmout_int = 0;
+	adpctl.b.adp_prb_int = 0;
+	adpctl.b.adp_tmout_int = 0;
+
+	return adpctl.d32;
+}
+
+/**
+ * Function is called to write ADP registers
+ */
+void dwc_otg_adp_modify_reg(dwc_otg_core_if_t * core_if, uint32_t clr,
+			    uint32_t set)
+{
+	dwc_otg_adp_write_reg(core_if,
+			      (dwc_otg_adp_read_reg(core_if) & (~clr)) | set);
+}
+
+static void adp_sense_timeout(void *ptr)
+{
+	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
+	core_if->adp.sense_timer_started = 0;
+	DWC_PRINTF("ADP SENSE TIMEOUT\n");
+	if (core_if->adp_enable) {
+		dwc_otg_adp_sense_stop(core_if);
+		dwc_otg_adp_probe_start(core_if);
+	}
+}
+
+/**
+ * This function is called when the ADP vbus timer expires. Timeout is 1.1s.
+ */
+static void adp_vbuson_timeout(void *ptr)
+{
+	gpwrdn_data_t gpwrdn;
+	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
+	hprt0_data_t hprt0 = {.d32 = 0 };
+	pcgcctl_data_t pcgcctl = {.d32 = 0 };
+	DWC_PRINTF("%s: 1.1 seconds expire after turning on VBUS\n",__FUNCTION__);
+	if (core_if) {
+		core_if->adp.vbuson_timer_started = 0;
+		/* Turn off vbus */
+		hprt0.b.prtpwr = 1;
+		DWC_MODIFY_REG32(core_if->host_if->hprt0, hprt0.d32, 0);
+		gpwrdn.d32 = 0;
+
+		/* Power off the core */
+		if (core_if->power_down == 2) {
+			/* Enable Wakeup Logic */
+//                      gpwrdn.b.wkupactiv = 1;
+			gpwrdn.b.pmuactv = 0;
+			gpwrdn.b.pwrdnrstn = 1;
+			gpwrdn.b.pwrdnclmp = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
+					 gpwrdn.d32);
+
+			/* Suspend the Phy Clock */
+			pcgcctl.b.stoppclk = 1;
+			DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+
+			/* Switch on VDD */
+//                      gpwrdn.b.wkupactiv = 1;
+			gpwrdn.b.pmuactv = 1;
+			gpwrdn.b.pwrdnrstn = 1;
+			gpwrdn.b.pwrdnclmp = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
+					 gpwrdn.d32);
+		} else {
+			/* Enable Power Down Logic */
+			gpwrdn.b.pmuintsel = 1;
+			gpwrdn.b.pmuactv = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+		}
+
+		/* Power off the core */
+		if (core_if->power_down == 2) {
+			gpwrdn.d32 = 0;
+			gpwrdn.b.pwrdnswtch = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn,
+					 gpwrdn.d32, 0);
+		}
+
+		/* Unmask SRP detected interrupt from Power Down Logic */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.srp_det_msk = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+
+		dwc_otg_adp_probe_start(core_if);
+		dwc_otg_dump_global_registers(core_if);
+		dwc_otg_dump_host_registers(core_if);
+	}
+
+}
+
+/**
+ * Start the ADP Initial Probe timer to detect if Port Connected interrupt is
+ * not asserted within 1.1 seconds.
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+void dwc_otg_adp_vbuson_timer_start(dwc_otg_core_if_t * core_if)
+{
+	core_if->adp.vbuson_timer_started = 1;
+	if (core_if->adp.vbuson_timer)
+	{
+		DWC_PRINTF("SCHEDULING VBUSON TIMER\n");
+		/* 1.1 secs + 60ms necessary for cil_hcd_start*/
+		DWC_TIMER_SCHEDULE(core_if->adp.vbuson_timer, 1160);
+	} else {
+		DWC_WARN("VBUSON_TIMER = %p\n",core_if->adp.vbuson_timer);
+	}
+}
+
+#if 0
+/**
+ * Masks all DWC OTG core interrupts
+ *
+ */
+static void mask_all_interrupts(dwc_otg_core_if_t * core_if)
+{
+	int i;
+	gahbcfg_data_t ahbcfg = {.d32 = 0 };
+
+	/* Mask Host Interrupts */
+
+	/* Clear and disable HCINTs */
+	for (i = 0; i < core_if->core_params->host_channels; i++) {
+		DWC_WRITE_REG32(&core_if->host_if->hc_regs[i]->hcintmsk, 0);
+		DWC_WRITE_REG32(&core_if->host_if->hc_regs[i]->hcint, 0xFFFFFFFF);
+
+	}
+
+	/* Clear and disable HAINT */
+	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->haintmsk, 0x0000);
+	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->haint, 0xFFFFFFFF);
+
+	/* Mask Device Interrupts */
+	if (!core_if->multiproc_int_enable) {
+		/* Clear and disable IN Endpoint interrupts */
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->diepmsk, 0);
+		for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->
+					diepint, 0xFFFFFFFF);
+		}
+
+		/* Clear and disable OUT Endpoint interrupts */
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->doepmsk, 0);
+		for (i = 0; i <= core_if->dev_if->num_out_eps; i++) {
+			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->
+					doepint, 0xFFFFFFFF);
+		}
+
+		/* Clear and disable DAINT */
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->daint,
+				0xFFFFFFFF);
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->daintmsk, 0);
+	} else {
+		for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
+					diepeachintmsk[i], 0);
+			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->
+					diepint, 0xFFFFFFFF);
+		}
+
+		for (i = 0; i < core_if->dev_if->num_out_eps; ++i) {
+			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
+					doepeachintmsk[i], 0);
+			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->
+					doepint, 0xFFFFFFFF);
+		}
+
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->deachintmsk,
+				0);
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->deachint,
+				0xFFFFFFFF);
+
+	}
+
+	/* Disable interrupts */
+	ahbcfg.b.glblintrmsk = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0);
+
+	/* Disable all interrupts. */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, 0);
+
+	/* Clear any pending interrupts */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+	/* Clear any pending OTG Interrupts */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gotgint, 0xFFFFFFFF);
+}
+
+/**
+ * Unmask Port Connection Detected interrupt
+ *
+ */
+static void unmask_conn_det_intr(dwc_otg_core_if_t * core_if)
+{
+	gintmsk_data_t gintmsk = {.d32 = 0,.b.portintr = 1 };
+
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32);
+}
+#endif
+
+/**
+ * Starts the ADP Probing
+ *
+ * @param core_if the pointer to core_if structure.
+ */
+uint32_t dwc_otg_adp_probe_start(dwc_otg_core_if_t * core_if)
+{
+
+	adpctl_data_t adpctl = {.d32 = 0};
+	gpwrdn_data_t gpwrdn;
+#if 0
+	adpctl_data_t adpctl_int = {.d32 = 0, .b.adp_prb_int = 1,
+								.b.adp_sns_int = 1, b.adp_tmout_int};
+#endif
+	dwc_otg_disable_global_interrupts(core_if);
+	DWC_PRINTF("ADP Probe Start\n");
+	core_if->adp.probe_enabled = 1;
+
+	adpctl.b.adpres = 1;
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+	while (adpctl.b.adpres) {
+		adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+	}
+
+	adpctl.d32 = 0;
+	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+
+	/* In Host mode unmask SRP detected interrupt */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.sts_chngint_msk = 1;
+	if (!gpwrdn.b.idsts) {
+		gpwrdn.b.srp_det_msk = 1;
+	}
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+
+	adpctl.b.adp_tmout_int_msk = 1;
+	adpctl.b.adp_prb_int_msk = 1;
+	adpctl.b.prb_dschg = 1;
+	adpctl.b.prb_delta = 1;
+	adpctl.b.prb_per = 1;
+	adpctl.b.adpen = 1;
+	adpctl.b.enaprb = 1;
+
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+	DWC_PRINTF("ADP Probe Finish\n");
+	return 0;
+}
+
+/**
+ * Starts the ADP Sense timer to detect if ADP Sense interrupt is not asserted
+ * within 3 seconds.
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+void dwc_otg_adp_sense_timer_start(dwc_otg_core_if_t * core_if)
+{
+	core_if->adp.sense_timer_started = 1;
+	DWC_TIMER_SCHEDULE(core_if->adp.sense_timer, 3000 /* 3 secs */ );
+}
+
+/**
+ * Starts the ADP Sense
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+uint32_t dwc_otg_adp_sense_start(dwc_otg_core_if_t * core_if)
+{
+	adpctl_data_t adpctl;
+
+	DWC_PRINTF("ADP Sense Start\n");
+
+	/* Unmask ADP sense interrupt and mask all other from the core */
+	adpctl.d32 = dwc_otg_adp_read_reg_filter(core_if);
+	adpctl.b.adp_sns_int_msk = 1;
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+	dwc_otg_disable_global_interrupts(core_if); // vahrama
+
+	/* Set ADP reset bit*/
+	adpctl.d32 = dwc_otg_adp_read_reg_filter(core_if);
+	adpctl.b.adpres = 1;
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+	while (adpctl.b.adpres) {
+		adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+	}
+
+	adpctl.b.adpres = 0;
+	adpctl.b.adpen = 1;
+	adpctl.b.enasns = 1;
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+	dwc_otg_adp_sense_timer_start(core_if);
+
+	return 0;
+}
+
+/**
+ * Stops the ADP Probing
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+uint32_t dwc_otg_adp_probe_stop(dwc_otg_core_if_t * core_if)
+{
+
+	adpctl_data_t adpctl;
+	DWC_PRINTF("Stop ADP probe\n");
+	core_if->adp.probe_enabled = 0;
+	core_if->adp.probe_counter = 0;
+	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+
+	adpctl.b.adpen = 0;
+	adpctl.b.adp_prb_int = 1;
+	adpctl.b.adp_tmout_int = 1;
+	adpctl.b.adp_sns_int = 1;
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+	return 0;
+}
+
+/**
+ * Stops the ADP Sensing
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+uint32_t dwc_otg_adp_sense_stop(dwc_otg_core_if_t * core_if)
+{
+	adpctl_data_t adpctl;
+
+	core_if->adp.sense_enabled = 0;
+
+	adpctl.d32 = dwc_otg_adp_read_reg_filter(core_if);
+	adpctl.b.enasns = 0;
+	adpctl.b.adp_sns_int = 1;
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+	return 0;
+}
+
+/**
+ * Called to turn on the VBUS after initial ADP probe in host mode.
+ * If port power was already enabled in cil_hcd_start function then
+ * only schedule a timer.
+ *
+ * @param core_if the pointer to core_if structure.
+ */
+void dwc_otg_adp_turnon_vbus(dwc_otg_core_if_t * core_if)
+{
+	hprt0_data_t hprt0 = {.d32 = 0 };
+	hprt0.d32 = dwc_otg_read_hprt0(core_if);
+	DWC_PRINTF("Turn on VBUS for 1.1s, port power is %d\n", hprt0.b.prtpwr);
+
+	if (hprt0.b.prtpwr == 0) {
+		hprt0.b.prtpwr = 1;
+		//DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+	}
+
+	dwc_otg_adp_vbuson_timer_start(core_if);
+}
+
+/**
+ * Called right after driver is loaded
+ * to perform initial actions for ADP
+ *
+ * @param core_if the pointer to core_if structure.
+ * @param is_host - flag for current mode of operation either from GINTSTS or GPWRDN
+ */
+void dwc_otg_adp_start(dwc_otg_core_if_t * core_if, uint8_t is_host)
+{
+	gpwrdn_data_t gpwrdn;
+
+	DWC_PRINTF("ADP Initial Start\n");
+	core_if->adp.adp_started = 1;
+
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+	dwc_otg_disable_global_interrupts(core_if);
+	if (is_host) {
+		DWC_PRINTF("HOST MODE\n");
+		/* Enable Power Down Logic Interrupt*/
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pmuintsel = 1;
+		gpwrdn.b.pmuactv = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+		/* Initialize first ADP probe to obtain Ramp Time value */
+		core_if->adp.initial_probe = 1;
+		dwc_otg_adp_probe_start(core_if);
+	} else {
+		gotgctl_data_t gotgctl;
+		gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+		DWC_PRINTF("DEVICE MODE\n");
+		if (gotgctl.b.bsesvld == 0) {
+			/* Enable Power Down Logic Interrupt*/
+			gpwrdn.d32 = 0;
+			DWC_PRINTF("VBUS is not valid - start ADP probe\n");
+			gpwrdn.b.pmuintsel = 1;
+			gpwrdn.b.pmuactv = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+			core_if->adp.initial_probe = 1;
+			dwc_otg_adp_probe_start(core_if);
+		} else {
+			DWC_PRINTF("VBUS is valid - initialize core as a Device\n");
+			core_if->op_state = B_PERIPHERAL;
+			dwc_otg_core_init(core_if);
+			dwc_otg_enable_global_interrupts(core_if);
+			cil_pcd_start(core_if);
+			dwc_otg_dump_global_registers(core_if);
+			dwc_otg_dump_dev_registers(core_if);
+		}
+	}
+}
+
+void dwc_otg_adp_init(dwc_otg_core_if_t * core_if)
+{
+	core_if->adp.adp_started = 0;
+	core_if->adp.initial_probe = 0;
+	core_if->adp.probe_timer_values[0] = -1;
+	core_if->adp.probe_timer_values[1] = -1;
+	core_if->adp.probe_enabled = 0;
+	core_if->adp.sense_enabled = 0;
+	core_if->adp.sense_timer_started = 0;
+	core_if->adp.vbuson_timer_started = 0;
+	core_if->adp.probe_counter = 0;
+	core_if->adp.gpwrdn = 0;
+	core_if->adp.attached = DWC_OTG_ADP_UNKOWN;
+	/* Initialize timers */
+	core_if->adp.sense_timer =
+	    DWC_TIMER_ALLOC("ADP SENSE TIMER", adp_sense_timeout, core_if);
+	core_if->adp.vbuson_timer =
+	    DWC_TIMER_ALLOC("ADP VBUS ON TIMER", adp_vbuson_timeout, core_if);
+	if (!core_if->adp.sense_timer || !core_if->adp.vbuson_timer)
+	{
+		DWC_ERROR("Could not allocate memory for ADP timers\n");
+	}
+}
+
+void dwc_otg_adp_remove(dwc_otg_core_if_t * core_if)
+{
+	gpwrdn_data_t gpwrdn = { .d32 = 0 };
+	gpwrdn.b.pmuintsel = 1;
+	gpwrdn.b.pmuactv = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	if (core_if->adp.probe_enabled)
+		dwc_otg_adp_probe_stop(core_if);
+	if (core_if->adp.sense_enabled)
+		dwc_otg_adp_sense_stop(core_if);
+	if (core_if->adp.sense_timer_started)
+		DWC_TIMER_CANCEL(core_if->adp.sense_timer);
+	if (core_if->adp.vbuson_timer_started)
+		DWC_TIMER_CANCEL(core_if->adp.vbuson_timer);
+	DWC_TIMER_FREE(core_if->adp.sense_timer);
+	DWC_TIMER_FREE(core_if->adp.vbuson_timer);
+}
+
+/////////////////////////////////////////////////////////////////////
+////////////// ADP Interrupt Handlers ///////////////////////////////
+/////////////////////////////////////////////////////////////////////
+/**
+ * This function sets Ramp Timer values
+ */
+static uint32_t set_timer_value(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	if (core_if->adp.probe_timer_values[0] == -1) {
+		core_if->adp.probe_timer_values[0] = val;
+		core_if->adp.probe_timer_values[1] = -1;
+		return 1;
+	} else {
+		core_if->adp.probe_timer_values[1] =
+		    core_if->adp.probe_timer_values[0];
+		core_if->adp.probe_timer_values[0] = val;
+		return 0;
+	}
+}
+
+/**
+ * This function compares Ramp Timer values
+ */
+static uint32_t compare_timer_values(dwc_otg_core_if_t * core_if)
+{
+	uint32_t diff;
+	if (core_if->adp.probe_timer_values[0]>=core_if->adp.probe_timer_values[1])
+			diff = core_if->adp.probe_timer_values[0]-core_if->adp.probe_timer_values[1];
+	else
+			diff = core_if->adp.probe_timer_values[1]-core_if->adp.probe_timer_values[0];
+	if(diff < 2) {
+		return 0;
+	} else {
+		return 1;
+	}
+}
+
+/**
+ * This function handles ADP Probe Interrupts
+ */
+static int32_t dwc_otg_adp_handle_prb_intr(dwc_otg_core_if_t * core_if,
+						 uint32_t val)
+{
+	adpctl_data_t adpctl = {.d32 = 0 };
+	gpwrdn_data_t gpwrdn, temp;
+	adpctl.d32 = val;
+
+	temp.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+	core_if->adp.probe_counter++;
+	core_if->adp.gpwrdn = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+	if (adpctl.b.rtim == 0 && !temp.b.idsts){
+		DWC_PRINTF("RTIM value is 0\n");
+		goto exit;
+	}
+	if (set_timer_value(core_if, adpctl.b.rtim) &&
+	    core_if->adp.initial_probe) {
+		core_if->adp.initial_probe = 0;
+		dwc_otg_adp_probe_stop(core_if);
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pmuactv = 1;
+		gpwrdn.b.pmuintsel = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+		/* check which value is for device mode and which for Host mode */
+		if (!temp.b.idsts) {	/* considered host mode value is 0 */
+			/*
+			 * Turn on VBUS after initial ADP probe.
+			 */
+			core_if->op_state = A_HOST;
+			dwc_otg_enable_global_interrupts(core_if);
+			DWC_SPINUNLOCK(core_if->lock);
+			cil_hcd_start(core_if);
+			dwc_otg_adp_turnon_vbus(core_if);
+			DWC_SPINLOCK(core_if->lock);
+		} else {
+			/*
+			 * Initiate SRP after initial ADP probe.
+			 */
+			dwc_otg_enable_global_interrupts(core_if);
+			dwc_otg_initiate_srp(core_if);
+		}
+	} else if (core_if->adp.probe_counter > 2){
+		gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+		if (compare_timer_values(core_if)) {
+			DWC_PRINTF("Difference in timer values !!! \n");
+//                      core_if->adp.attached = DWC_OTG_ADP_ATTACHED;
+			dwc_otg_adp_probe_stop(core_if);
+
+			/* Power on the core */
+			if (core_if->power_down == 2) {
+				gpwrdn.b.pwrdnswtch = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+			}
+
+			/* check which value is for device mode and which for Host mode */
+			if (!temp.b.idsts) {	/* considered host mode value is 0 */
+				/* Disable Interrupt from Power Down Logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pmuintsel = 1;
+				gpwrdn.b.pmuactv = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, gpwrdn.d32, 0);
+
+				/*
+				 * Initialize the Core for Host mode.
+				 */
+				core_if->op_state = A_HOST;
+				dwc_otg_core_init(core_if);
+				dwc_otg_enable_global_interrupts(core_if);
+				cil_hcd_start(core_if);
+			} else {
+				gotgctl_data_t gotgctl;
+				/* Mask SRP detected interrupt from Power Down Logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.srp_det_msk = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, gpwrdn.d32, 0);
+
+				/* Disable Power Down Logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pmuintsel = 1;
+				gpwrdn.b.pmuactv = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, gpwrdn.d32, 0);
+
+				/*
+				 * Initialize the Core for Device mode.
+				 */
+				core_if->op_state = B_PERIPHERAL;
+				dwc_otg_core_init(core_if);
+				dwc_otg_enable_global_interrupts(core_if);
+				cil_pcd_start(core_if);
+
+				gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+				if (!gotgctl.b.bsesvld) {
+					dwc_otg_initiate_srp(core_if);
+				}
+			}
+		}
+		if (core_if->power_down == 2) {
+			if (gpwrdn.b.bsessvld) {
+				/* Mask SRP detected interrupt from Power Down Logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.srp_det_msk = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+				/* Disable Power Down Logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pmuactv = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+				/*
+				 * Initialize the Core for Device mode.
+				 */
+				core_if->op_state = B_PERIPHERAL;
+				dwc_otg_core_init(core_if);
+				dwc_otg_enable_global_interrupts(core_if);
+				cil_pcd_start(core_if);
+			}
+		}
+	}
+exit:
+	/* Clear interrupt */
+	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+	adpctl.b.adp_prb_int = 1;
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+	return 0;
+}
+
+/**
+ * This function hadles ADP Sense Interrupt
+ */
+static int32_t dwc_otg_adp_handle_sns_intr(dwc_otg_core_if_t * core_if)
+{
+	adpctl_data_t adpctl;
+	/* Stop ADP Sense timer */
+	DWC_TIMER_CANCEL(core_if->adp.sense_timer);
+
+	/* Restart ADP Sense timer */
+	dwc_otg_adp_sense_timer_start(core_if);
+
+	/* Clear interrupt */
+	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+	adpctl.b.adp_sns_int = 1;
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+	return 0;
+}
+
+/**
+ * This function handles ADP Probe Interrupts
+ */
+static int32_t dwc_otg_adp_handle_prb_tmout_intr(dwc_otg_core_if_t * core_if,
+						 uint32_t val)
+{
+	adpctl_data_t adpctl = {.d32 = 0 };
+	adpctl.d32 = val;
+	set_timer_value(core_if, adpctl.b.rtim);
+
+	/* Clear interrupt */
+	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+	adpctl.b.adp_tmout_int = 1;
+	dwc_otg_adp_write_reg(core_if, adpctl.d32);
+
+	return 0;
+}
+
+/**
+ * ADP Interrupt handler.
+ *
+ */
+int32_t dwc_otg_adp_handle_intr(dwc_otg_core_if_t * core_if)
+{
+	int retval = 0;
+	adpctl_data_t adpctl = {.d32 = 0};
+
+	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
+	DWC_PRINTF("ADPCTL = %08x\n",adpctl.d32);
+
+	if (adpctl.b.adp_sns_int & adpctl.b.adp_sns_int_msk) {
+		DWC_PRINTF("ADP Sense interrupt\n");
+		retval |= dwc_otg_adp_handle_sns_intr(core_if);
+	}
+	if (adpctl.b.adp_tmout_int & adpctl.b.adp_tmout_int_msk) {
+		DWC_PRINTF("ADP timeout interrupt\n");
+		retval |= dwc_otg_adp_handle_prb_tmout_intr(core_if, adpctl.d32);
+	}
+	if (adpctl.b.adp_prb_int & adpctl.b.adp_prb_int_msk) {
+		DWC_PRINTF("ADP Probe interrupt\n");
+		adpctl.b.adp_prb_int = 1;
+		retval |= dwc_otg_adp_handle_prb_intr(core_if, adpctl.d32);
+	}
+
+//	dwc_otg_adp_modify_reg(core_if, adpctl.d32, 0);
+	//dwc_otg_adp_write_reg(core_if, adpctl.d32);
+	DWC_PRINTF("RETURN FROM ADP ISR\n");
+
+	return retval;
+}
+
+/**
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_adp_handle_srp_intr(dwc_otg_core_if_t * core_if)
+{
+
+#ifndef DWC_HOST_ONLY
+	hprt0_data_t hprt0;
+	gpwrdn_data_t gpwrdn;
+	DWC_DEBUGPL(DBG_ANY, "++ Power Down Logic Session Request Interrupt++\n");
+
+	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+	/* check which value is for device mode and which for Host mode */
+	if (!gpwrdn.b.idsts) {	/* considered host mode value is 0 */
+		DWC_PRINTF("SRP: Host mode\n");
+
+		if (core_if->adp_enable) {
+			dwc_otg_adp_probe_stop(core_if);
+
+			/* Power on the core */
+			if (core_if->power_down == 2) {
+				gpwrdn.b.pwrdnswtch = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+			}
+
+			core_if->op_state = A_HOST;
+			dwc_otg_core_init(core_if);
+			dwc_otg_enable_global_interrupts(core_if);
+			cil_hcd_start(core_if);
+		}
+
+		/* Turn on the port power bit. */
+		hprt0.d32 = dwc_otg_read_hprt0(core_if);
+		hprt0.b.prtpwr = 1;
+		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+		/* Start the Connection timer. So a message can be displayed
+		 * if connect does not occur within 10 seconds. */
+		cil_hcd_session_start(core_if);
+	} else {
+		DWC_PRINTF("SRP: Device mode %s\n", __FUNCTION__);
+		if (core_if->adp_enable) {
+			dwc_otg_adp_probe_stop(core_if);
+
+			/* Power on the core */
+			if (core_if->power_down == 2) {
+				gpwrdn.b.pwrdnswtch = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+			}
+
+			gpwrdn.d32 = 0;
+			gpwrdn.b.pmuactv = 0;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
+					 gpwrdn.d32);
+
+			core_if->op_state = B_PERIPHERAL;
+			dwc_otg_core_init(core_if);
+			dwc_otg_enable_global_interrupts(core_if);
+			cil_pcd_start(core_if);
+		}
+	}
+#endif
+	return 1;
+}
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_adp.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_adp.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_adp.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_adp.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,80 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_adp.h $
+ * $Revision: #7 $
+ * $Date: 2011/10/24 $
+ * $Change: 1871159 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_ADP_H__
+#define __DWC_OTG_ADP_H__
+
+/**
+ * @file
+ *
+ * This file contains the Attach Detect Protocol interfaces and defines
+ * (functions) and structures for Linux.
+ *
+ */
+
+#define DWC_OTG_ADP_UNATTACHED	0
+#define DWC_OTG_ADP_ATTACHED	1
+#define DWC_OTG_ADP_UNKOWN	2
+
+typedef struct dwc_otg_adp {
+	uint32_t adp_started;
+	uint32_t initial_probe;
+	int32_t probe_timer_values[2];
+	uint32_t probe_enabled;
+	uint32_t sense_enabled;
+	dwc_timer_t *sense_timer;
+	uint32_t sense_timer_started;
+	dwc_timer_t *vbuson_timer;
+	uint32_t vbuson_timer_started;
+	uint32_t attached;
+	uint32_t probe_counter;
+	uint32_t gpwrdn;
+} dwc_otg_adp_t;
+
+/**
+ * Attach Detect Protocol functions
+ */
+
+extern void dwc_otg_adp_write_reg(dwc_otg_core_if_t * core_if, uint32_t value);
+extern uint32_t dwc_otg_adp_read_reg(dwc_otg_core_if_t * core_if);
+extern uint32_t dwc_otg_adp_probe_start(dwc_otg_core_if_t * core_if);
+extern uint32_t dwc_otg_adp_sense_start(dwc_otg_core_if_t * core_if);
+extern uint32_t dwc_otg_adp_probe_stop(dwc_otg_core_if_t * core_if);
+extern uint32_t dwc_otg_adp_sense_stop(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_adp_start(dwc_otg_core_if_t * core_if, uint8_t is_host);
+extern void dwc_otg_adp_init(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_adp_remove(dwc_otg_core_if_t * core_if);
+extern int32_t dwc_otg_adp_handle_intr(dwc_otg_core_if_t * core_if);
+extern int32_t dwc_otg_adp_handle_srp_intr(dwc_otg_core_if_t * core_if);
+
+#endif //__DWC_OTG_ADP_H__
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_attr.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_attr.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_attr.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_attr.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,1210 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.c $
+ * $Revision: #44 $
+ * $Date: 2010/11/29 $
+ * $Change: 1636033 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * The diagnostic interface will provide access to the controller for
+ * bringing up the hardware and testing.  The Linux driver attributes
+ * feature will be used to provide the Linux Diagnostic
+ * Interface. These attributes are accessed through sysfs.
+ */
+
+/** @page "Linux Module Attributes"
+ *
+ * The Linux module attributes feature is used to provide the Linux
+ * Diagnostic Interface.  These attributes are accessed through sysfs.
+ * The diagnostic interface will provide access to the controller for
+ * bringing up the hardware and testing.
+
+ The following table shows the attributes.
+ <table>
+ <tr>
+ <td><b> Name</b></td>
+ <td><b> Description</b></td>
+ <td><b> Access</b></td>
+ </tr>
+
+ <tr>
+ <td> mode </td>
+ <td> Returns the current mode: 0 for device mode, 1 for host mode</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hnpcapable </td>
+ <td> Gets or sets the "HNP-capable" bit in the Core USB Configuraton Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> srpcapable </td>
+ <td> Gets or sets the "SRP-capable" bit in the Core USB Configuraton Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> hsic_connect </td>
+ <td> Gets or sets the "HSIC-Connect" bit in the GLPMCFG Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> inv_sel_hsic </td>
+ <td> Gets or sets the "Invert Select HSIC" bit in the GLPMFG Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> hnp </td>
+ <td> Initiates the Host Negotiation Protocol.  Read returns the status.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> srp </td>
+ <td> Initiates the Session Request Protocol.  Read returns the status.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> buspower </td>
+ <td> Gets or sets the Power State of the bus (0 - Off or 1 - On)</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> bussuspend </td>
+ <td> Suspends the USB bus.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> busconnected </td>
+ <td> Gets the connection status of the bus</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> gotgctl </td>
+ <td> Gets or sets the Core Control Status Register.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gusbcfg </td>
+ <td> Gets or sets the Core USB Configuration Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> grxfsiz </td>
+ <td> Gets or sets the Receive FIFO Size Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gnptxfsiz </td>
+ <td> Gets or sets the non-periodic Transmit Size Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gpvndctl </td>
+ <td> Gets or sets the PHY Vendor Control Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> ggpio </td>
+ <td> Gets the value in the lower 16-bits of the General Purpose IO Register
+ or sets the upper 16 bits.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> guid </td>
+ <td> Gets or sets the value of the User ID Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gsnpsid </td>
+ <td> Gets the value of the Synopsys ID Regester</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> devspeed </td>
+ <td> Gets or sets the device speed setting in the DCFG register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> enumspeed </td>
+ <td> Gets the device enumeration Speed.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hptxfsiz </td>
+ <td> Gets the value of the Host Periodic Transmit FIFO</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hprt0 </td>
+ <td> Gets or sets the value in the Host Port Control and Status Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> regoffset </td>
+ <td> Sets the register offset for the next Register Access</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> regvalue </td>
+ <td> Gets or sets the value of the register at the offset in the regoffset attribute.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> remote_wakeup </td>
+ <td> On read, shows the status of Remote Wakeup. On write, initiates a remote
+ wakeup of the host. When bit 0 is 1 and Remote Wakeup is enabled, the Remote
+ Wakeup signalling bit in the Device Control Register is set for 1
+ milli-second.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> rem_wakeup_pwrdn </td>
+ <td> On read, shows the status core - hibernated or not. On write, initiates
+ a remote wakeup of the device from Hibernation. </td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> mode_ch_tim_en </td>
+ <td> This bit is used to enable or disable the host core to wait for 200 PHY
+ clock cycles at the end of Resume to change the opmode signal to the PHY to 00
+ after Suspend or LPM. </td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> fr_interval </td>
+ <td> On read, shows the value of HFIR Frame Interval. On write, dynamically
+ reload HFIR register during runtime. The application can write a value to this
+ register only after the Port Enable bit of the Host Port Control and Status
+ register (HPRT.PrtEnaPort) has been set </td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> disconnect_us </td>
+ <td> On read, shows the status of disconnect_device_us. On write, sets disconnect_us
+ which causes soft disconnect for 100us. Applicable only for device mode of operation.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> regdump </td>
+ <td> Dumps the contents of core registers.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> spramdump </td>
+ <td> Dumps the contents of core registers.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hcddump </td>
+ <td> Dumps the current HCD state.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hcd_frrem </td>
+ <td> Shows the average value of the Frame Remaining
+ field in the Host Frame Number/Frame Remaining register when an SOF interrupt
+ occurs. This can be used to determine the average interrupt latency. Also
+ shows the average Frame Remaining value for start_transfer and the "a" and
+ "b" sample points. The "a" and "b" sample points may be used during debugging
+ bto determine how long it takes to execute a section of the HCD code.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> rd_reg_test </td>
+ <td> Displays the time required to read the GNPTXFSIZ register many times
+ (the output shows the number of times the register is read).
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> wr_reg_test </td>
+ <td> Displays the time required to write the GNPTXFSIZ register many times
+ (the output shows the number of times the register is written).
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> lpm_response </td>
+ <td> Gets or sets lpm_response mode. Applicable only in device mode.
+ <td> Write</td>
+ </tr>
+
+ <tr>
+ <td> sleep_status </td>
+ <td> Shows sleep status of device.
+ <td> Read</td>
+ </tr>
+
+ </table>
+
+ Example usage:
+ To get the current mode:
+ cat /sys/devices/lm0/mode
+
+ To power down the USB:
+ echo 0 > /sys/devices/lm0/buspower
+ */
+
+#include "dwc_otg_os_dep.h"
+#include "dwc_os.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_attr.h"
+#include "dwc_otg_core_if.h"
+#include "dwc_otg_pcd_if.h"
+#include "dwc_otg_hcd_if.h"
+
+/*
+ * MACROs for defining sysfs attribute
+ */
+#ifdef LM_INTERFACE
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+	struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
+	dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);		\
+	uint32_t val; \
+	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+	return sprintf (buf, "%s = 0x%x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+					const char *buf, size_t count) \
+{ \
+	struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
+	dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev); \
+	uint32_t set = simple_strtoul(buf, NULL, 16); \
+	dwc_otg_set_##_otg_attr_name_(otg_dev->core_if, set);\
+	return count; \
+}
+
+#elif defined(PCI_INTERFACE)
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+	dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);	\
+	uint32_t val; \
+	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+	return sprintf (buf, "%s = 0x%x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+					const char *buf, size_t count) \
+{ \
+	dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);  \
+	uint32_t set = simple_strtoul(buf, NULL, 16); \
+	dwc_otg_set_##_otg_attr_name_(otg_dev->core_if, set);\
+	return count; \
+}
+
+#elif defined(PLATFORM_INTERFACE)
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+        struct platform_device *platform_dev = \
+                container_of(_dev, struct platform_device, dev); \
+        dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);  \
+	uint32_t val; \
+	DWC_PRINTF("%s(%p) -> platform_dev %p, otg_dev %p\n", \
+                    __func__, _dev, platform_dev, otg_dev); \
+	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+	return sprintf (buf, "%s = 0x%x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+					const char *buf, size_t count) \
+{ \
+        struct platform_device *platform_dev = container_of(_dev, struct platform_device, dev); \
+        dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev); \
+	uint32_t set = simple_strtoul(buf, NULL, 16); \
+	dwc_otg_set_##_otg_attr_name_(otg_dev->core_if, set);\
+	return count; \
+}
+#endif
+
+/*
+ * MACROs for defining sysfs attribute for 32-bit registers
+ */
+#ifdef LM_INTERFACE
+#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+	struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
+	dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev); \
+	uint32_t val; \
+	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+	return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+					const char *buf, size_t count) \
+{ \
+	struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
+	dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev); \
+	uint32_t val = simple_strtoul(buf, NULL, 16); \
+	dwc_otg_set_##_otg_attr_name_ (otg_dev->core_if, val); \
+	return count; \
+}
+#elif defined(PCI_INTERFACE)
+#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+	dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);  \
+	uint32_t val; \
+	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+	return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+					const char *buf, size_t count) \
+{ \
+	dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);  \
+	uint32_t val = simple_strtoul(buf, NULL, 16); \
+	dwc_otg_set_##_otg_attr_name_ (otg_dev->core_if, val); \
+	return count; \
+}
+
+#elif defined(PLATFORM_INTERFACE)
+#include "dwc_otg_dbg.h"
+#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+	struct platform_device *platform_dev = container_of(_dev, struct platform_device, dev); \
+	dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev); \
+	uint32_t val; \
+	DWC_PRINTF("%s(%p) -> platform_dev %p, otg_dev %p\n", \
+                    __func__, _dev, platform_dev, otg_dev); \
+	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
+	return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+					const char *buf, size_t count) \
+{ \
+	struct platform_device *platform_dev = container_of(_dev, struct platform_device, dev); \
+	dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev); \
+	uint32_t val = simple_strtoul(buf, NULL, 16); \
+	dwc_otg_set_##_otg_attr_name_ (otg_dev->core_if, val); \
+	return count; \
+}
+
+#endif
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_RW(_otg_attr_name_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_RO(_otg_attr_name_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
+
+#define DWC_OTG_DEVICE_ATTR_REG32_RW(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
+
+#define DWC_OTG_DEVICE_ATTR_REG32_RO(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
+
+/** @name Functions for Show/Store of Attributes */
+/**@{*/
+
+/**
+ * Helper function returning the otg_device structure of the given device
+ */
+static dwc_otg_device_t *dwc_otg_drvdev(struct device *_dev)
+{
+        dwc_otg_device_t *otg_dev;
+        DWC_OTG_GETDRVDEV(otg_dev, _dev);
+        return otg_dev;
+}
+
+/**
+ * Show the register offset of the Register Access.
+ */
+static ssize_t regoffset_show(struct device *_dev,
+			      struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	return snprintf(buf, sizeof("0xFFFFFFFF\n") + 1, "0x%08x\n",
+			otg_dev->os_dep.reg_offset);
+}
+
+/**
+ * Set the register offset for the next Register Access 	Read/Write
+ */
+static ssize_t regoffset_store(struct device *_dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t offset = simple_strtoul(buf, NULL, 16);
+#if defined(LM_INTERFACE) || defined(PLATFORM_INTERFACE)
+	if (offset < SZ_256K) {
+#elif  defined(PCI_INTERFACE)
+	if (offset < 0x00040000) {
+#endif
+		otg_dev->os_dep.reg_offset = offset;
+	} else {
+		dev_err(_dev, "invalid offset\n");
+	}
+
+	return count;
+}
+
+DEVICE_ATTR(regoffset, S_IRUGO | S_IWUSR, regoffset_show, regoffset_store);
+
+/**
+ * Show the value of the register at the offset in the reg_offset
+ * attribute.
+ */
+static ssize_t regvalue_show(struct device *_dev,
+			     struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t val;
+	volatile uint32_t *addr;
+
+	if (otg_dev->os_dep.reg_offset != 0xFFFFFFFF && 0 != otg_dev->os_dep.base) {
+		/* Calculate the address */
+		addr = (uint32_t *) (otg_dev->os_dep.reg_offset +
+				     (uint8_t *) otg_dev->os_dep.base);
+		val = DWC_READ_REG32(addr);
+		return snprintf(buf,
+				sizeof("Reg@0xFFFFFFFF = 0xFFFFFFFF\n") + 1,
+				"Reg@0x%06x = 0x%08x\n", otg_dev->os_dep.reg_offset,
+				val);
+	} else {
+		dev_err(_dev, "Invalid offset (0x%0x)\n", otg_dev->os_dep.reg_offset);
+		return sprintf(buf, "invalid offset\n");
+	}
+}
+
+/**
+ * Store the value in the register at the offset in the reg_offset
+ * attribute.
+ *
+ */
+static ssize_t regvalue_store(struct device *_dev,
+			      struct device_attribute *attr,
+			      const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	volatile uint32_t *addr;
+	uint32_t val = simple_strtoul(buf, NULL, 16);
+	//dev_dbg(_dev, "Offset=0x%08x Val=0x%08x\n", otg_dev->reg_offset, val);
+	if (otg_dev->os_dep.reg_offset != 0xFFFFFFFF && 0 != otg_dev->os_dep.base) {
+		/* Calculate the address */
+		addr = (uint32_t *) (otg_dev->os_dep.reg_offset +
+				     (uint8_t *) otg_dev->os_dep.base);
+		DWC_WRITE_REG32(addr, val);
+	} else {
+		dev_err(_dev, "Invalid Register Offset (0x%08x)\n",
+			otg_dev->os_dep.reg_offset);
+	}
+	return count;
+}
+
+DEVICE_ATTR(regvalue, S_IRUGO | S_IWUSR, regvalue_show, regvalue_store);
+
+/*
+ * Attributes
+ */
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(mode, "Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hnpcapable, "HNPCapable");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(srpcapable, "SRPCapable");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hsic_connect, "HSIC Connect");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(inv_sel_hsic, "Invert Select HSIC");
+
+//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(buspower,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
+//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(bussuspend,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(busconnected, "Bus Connected");
+
+DWC_OTG_DEVICE_ATTR_REG32_RW(gotgctl, 0, "GOTGCTL");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gusbcfg,
+			     &(otg_dev->core_if->core_global_regs->gusbcfg),
+			     "GUSBCFG");
+DWC_OTG_DEVICE_ATTR_REG32_RW(grxfsiz,
+			     &(otg_dev->core_if->core_global_regs->grxfsiz),
+			     "GRXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gnptxfsiz,
+			     &(otg_dev->core_if->core_global_regs->gnptxfsiz),
+			     "GNPTXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gpvndctl,
+			     &(otg_dev->core_if->core_global_regs->gpvndctl),
+			     "GPVNDCTL");
+DWC_OTG_DEVICE_ATTR_REG32_RW(ggpio,
+			     &(otg_dev->core_if->core_global_regs->ggpio),
+			     "GGPIO");
+DWC_OTG_DEVICE_ATTR_REG32_RW(guid, &(otg_dev->core_if->core_global_regs->guid),
+			     "GUID");
+DWC_OTG_DEVICE_ATTR_REG32_RO(gsnpsid,
+			     &(otg_dev->core_if->core_global_regs->gsnpsid),
+			     "GSNPSID");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(devspeed, "Device Speed");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(enumspeed, "Device Enumeration Speed");
+
+DWC_OTG_DEVICE_ATTR_REG32_RO(hptxfsiz,
+			     &(otg_dev->core_if->core_global_regs->hptxfsiz),
+			     "HPTXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(hprt0, otg_dev->core_if->host_if->hprt0, "HPRT0");
+
+/**
+ * @todo Add code to initiate the HNP.
+ */
+/**
+ * Show the HNP status bit
+ */
+static ssize_t hnp_show(struct device *_dev,
+			struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	return sprintf(buf, "HstNegScs = 0x%x\n",
+		       dwc_otg_get_hnpstatus(otg_dev->core_if));
+}
+
+/**
+ * Set the HNP Request bit
+ */
+static ssize_t hnp_store(struct device *_dev,
+			 struct device_attribute *attr,
+			 const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t in = simple_strtoul(buf, NULL, 16);
+	dwc_otg_set_hnpreq(otg_dev->core_if, in);
+	return count;
+}
+
+DEVICE_ATTR(hnp, 0644, hnp_show, hnp_store);
+
+/**
+ * @todo Add code to initiate the SRP.
+ */
+/**
+ * Show the SRP status bit
+ */
+static ssize_t srp_show(struct device *_dev,
+			struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	return sprintf(buf, "SesReqScs = 0x%x\n",
+		       dwc_otg_get_srpstatus(otg_dev->core_if));
+#else
+	return sprintf(buf, "Host Only Mode!\n");
+#endif
+}
+
+/**
+ * Set the SRP Request bit
+ */
+static ssize_t srp_store(struct device *_dev,
+			 struct device_attribute *attr,
+			 const char *buf, size_t count)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	dwc_otg_pcd_initiate_srp(otg_dev->pcd);
+#endif
+	return count;
+}
+
+DEVICE_ATTR(srp, 0644, srp_show, srp_store);
+
+/**
+ * @todo Need to do more for power on/off?
+ */
+/**
+ * Show the Bus Power status
+ */
+static ssize_t buspower_show(struct device *_dev,
+			     struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	return sprintf(buf, "Bus Power = 0x%x\n",
+		       dwc_otg_get_prtpower(otg_dev->core_if));
+}
+
+/**
+ * Set the Bus Power status
+ */
+static ssize_t buspower_store(struct device *_dev,
+			      struct device_attribute *attr,
+			      const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t on = simple_strtoul(buf, NULL, 16);
+	dwc_otg_set_prtpower(otg_dev->core_if, on);
+	return count;
+}
+
+DEVICE_ATTR(buspower, 0644, buspower_show, buspower_store);
+
+/**
+ * @todo Need to do more for suspend?
+ */
+/**
+ * Show the Bus Suspend status
+ */
+static ssize_t bussuspend_show(struct device *_dev,
+			       struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	return sprintf(buf, "Bus Suspend = 0x%x\n",
+		       dwc_otg_get_prtsuspend(otg_dev->core_if));
+}
+
+/**
+ * Set the Bus Suspend status
+ */
+static ssize_t bussuspend_store(struct device *_dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t in = simple_strtoul(buf, NULL, 16);
+	dwc_otg_set_prtsuspend(otg_dev->core_if, in);
+	return count;
+}
+
+DEVICE_ATTR(bussuspend, 0644, bussuspend_show, bussuspend_store);
+
+/**
+ * Show the Mode Change Ready Timer status
+ */
+static ssize_t mode_ch_tim_en_show(struct device *_dev,
+				   struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	return sprintf(buf, "Mode Change Ready Timer Enable = 0x%x\n",
+		       dwc_otg_get_mode_ch_tim(otg_dev->core_if));
+}
+
+/**
+ * Set the Mode Change Ready Timer status
+ */
+static ssize_t mode_ch_tim_en_store(struct device *_dev,
+				    struct device_attribute *attr,
+				    const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t in = simple_strtoul(buf, NULL, 16);
+	dwc_otg_set_mode_ch_tim(otg_dev->core_if, in);
+	return count;
+}
+
+DEVICE_ATTR(mode_ch_tim_en, 0644, mode_ch_tim_en_show, mode_ch_tim_en_store);
+
+/**
+ * Show the value of HFIR Frame Interval bitfield
+ */
+static ssize_t fr_interval_show(struct device *_dev,
+				struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	return sprintf(buf, "Frame Interval = 0x%x\n",
+		       dwc_otg_get_fr_interval(otg_dev->core_if));
+}
+
+/**
+ * Set the HFIR Frame Interval value
+ */
+static ssize_t fr_interval_store(struct device *_dev,
+				 struct device_attribute *attr,
+				 const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t in = simple_strtoul(buf, NULL, 10);
+	dwc_otg_set_fr_interval(otg_dev->core_if, in);
+	return count;
+}
+
+DEVICE_ATTR(fr_interval, 0644, fr_interval_show, fr_interval_store);
+
+/**
+ * Show the status of Remote Wakeup.
+ */
+static ssize_t remote_wakeup_show(struct device *_dev,
+				  struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+	return sprintf(buf,
+		       "Remote Wakeup Sig = %d Enabled = %d LPM Remote Wakeup = %d\n",
+		       dwc_otg_get_remotewakesig(otg_dev->core_if),
+		       dwc_otg_pcd_get_rmwkup_enable(otg_dev->pcd),
+		       dwc_otg_get_lpm_remotewakeenabled(otg_dev->core_if));
+#else
+	return sprintf(buf, "Host Only Mode!\n");
+#endif /* DWC_HOST_ONLY */
+}
+
+/**
+ * Initiate a remote wakeup of the host.  The Device control register
+ * Remote Wakeup Signal bit is written if the PCD Remote wakeup enable
+ * flag is set.
+ *
+ */
+static ssize_t remote_wakeup_store(struct device *_dev,
+				   struct device_attribute *attr,
+				   const char *buf, size_t count)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t val = simple_strtoul(buf, NULL, 16);
+
+	if (val & 1) {
+		dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 1);
+	} else {
+		dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 0);
+	}
+#endif /* DWC_HOST_ONLY */
+	return count;
+}
+
+DEVICE_ATTR(remote_wakeup, S_IRUGO | S_IWUSR, remote_wakeup_show,
+	    remote_wakeup_store);
+
+/**
+ * Show the whether core is hibernated or not.
+ */
+static ssize_t rem_wakeup_pwrdn_show(struct device *_dev,
+				     struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+	if (dwc_otg_get_core_state(otg_dev->core_if)) {
+		DWC_PRINTF("Core is in hibernation\n");
+	} else {
+		DWC_PRINTF("Core is not in hibernation\n");
+	}
+#endif /* DWC_HOST_ONLY */
+	return 0;
+}
+
+extern int dwc_otg_device_hibernation_restore(dwc_otg_core_if_t * core_if,
+					      int rem_wakeup, int reset);
+
+/**
+ * Initiate a remote wakeup of the device to exit from hibernation.
+ */
+static ssize_t rem_wakeup_pwrdn_store(struct device *_dev,
+				      struct device_attribute *attr,
+				      const char *buf, size_t count)
+{
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	dwc_otg_device_hibernation_restore(otg_dev->core_if, 1, 0);
+#endif
+	return count;
+}
+
+DEVICE_ATTR(rem_wakeup_pwrdn, S_IRUGO | S_IWUSR, rem_wakeup_pwrdn_show,
+	    rem_wakeup_pwrdn_store);
+
+static ssize_t disconnect_us(struct device *_dev,
+			     struct device_attribute *attr,
+			     const char *buf, size_t count)
+{
+
+#ifndef DWC_HOST_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t val = simple_strtoul(buf, NULL, 16);
+	DWC_PRINTF("The Passed value is %04x\n", val);
+
+	dwc_otg_pcd_disconnect_us(otg_dev->pcd, 50);
+
+#endif /* DWC_HOST_ONLY */
+	return count;
+}
+
+DEVICE_ATTR(disconnect_us, S_IWUSR, 0, disconnect_us);
+
+/**
+ * Dump global registers and either host or device registers (depending on the
+ * current mode of the core).
+ */
+static ssize_t regdump_show(struct device *_dev,
+			    struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+	dwc_otg_dump_global_registers(otg_dev->core_if);
+	if (dwc_otg_is_host_mode(otg_dev->core_if)) {
+		dwc_otg_dump_host_registers(otg_dev->core_if);
+	} else {
+		dwc_otg_dump_dev_registers(otg_dev->core_if);
+
+	}
+	return sprintf(buf, "Register Dump\n");
+}
+
+DEVICE_ATTR(regdump, S_IRUGO, regdump_show, 0);
+
+/**
+ * Dump global registers and either host or device registers (depending on the
+ * current mode of the core).
+ */
+static ssize_t spramdump_show(struct device *_dev,
+			      struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+	//dwc_otg_dump_spram(otg_dev->core_if);
+
+	return sprintf(buf, "SPRAM Dump\n");
+}
+
+DEVICE_ATTR(spramdump, S_IRUGO, spramdump_show, 0);
+
+/**
+ * Dump the current hcd state.
+ */
+static ssize_t hcddump_show(struct device *_dev,
+			    struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_DEVICE_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	dwc_otg_hcd_dump_state(otg_dev->hcd);
+#endif /* DWC_DEVICE_ONLY */
+	return sprintf(buf, "HCD Dump\n");
+}
+
+DEVICE_ATTR(hcddump, S_IRUGO, hcddump_show, 0);
+
+/**
+ * Dump the average frame remaining at SOF. This can be used to
+ * determine average interrupt latency. Frame remaining is also shown for
+ * start transfer and two additional sample points.
+ */
+static ssize_t hcd_frrem_show(struct device *_dev,
+			      struct device_attribute *attr, char *buf)
+{
+#ifndef DWC_DEVICE_ONLY
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+	dwc_otg_hcd_dump_frrem(otg_dev->hcd);
+#endif /* DWC_DEVICE_ONLY */
+	return sprintf(buf, "HCD Dump Frame Remaining\n");
+}
+
+DEVICE_ATTR(hcd_frrem, S_IRUGO, hcd_frrem_show, 0);
+
+/**
+ * Displays the time required to read the GNPTXFSIZ register many times (the
+ * output shows the number of times the register is read).
+ */
+#define RW_REG_COUNT 10000000
+#define MSEC_PER_JIFFIE 1000/HZ
+static ssize_t rd_reg_test_show(struct device *_dev,
+				struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	int i;
+	int time;
+	int start_jiffies;
+
+	printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
+	       HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
+	start_jiffies = jiffies;
+	for (i = 0; i < RW_REG_COUNT; i++) {
+		dwc_otg_get_gnptxfsiz(otg_dev->core_if);
+	}
+	time = jiffies - start_jiffies;
+	return sprintf(buf,
+		       "Time to read GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
+		       RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
+}
+
+DEVICE_ATTR(rd_reg_test, S_IRUGO, rd_reg_test_show, 0);
+
+/**
+ * Displays the time required to write the GNPTXFSIZ register many times (the
+ * output shows the number of times the register is written).
+ */
+static ssize_t wr_reg_test_show(struct device *_dev,
+				struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t reg_val;
+	int i;
+	int time;
+	int start_jiffies;
+
+	printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
+	       HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
+	reg_val = dwc_otg_get_gnptxfsiz(otg_dev->core_if);
+	start_jiffies = jiffies;
+	for (i = 0; i < RW_REG_COUNT; i++) {
+		dwc_otg_set_gnptxfsiz(otg_dev->core_if, reg_val);
+	}
+	time = jiffies - start_jiffies;
+	return sprintf(buf,
+		       "Time to write GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
+		       RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
+}
+
+DEVICE_ATTR(wr_reg_test, S_IRUGO, wr_reg_test_show, 0);
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+
+/**
+* Show the lpm_response attribute.
+*/
+static ssize_t lpmresp_show(struct device *_dev,
+			    struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+
+	if (!dwc_otg_get_param_lpm_enable(otg_dev->core_if))
+		return sprintf(buf, "** LPM is DISABLED **\n");
+
+	if (!dwc_otg_is_device_mode(otg_dev->core_if)) {
+		return sprintf(buf, "** Current mode is not device mode\n");
+	}
+	return sprintf(buf, "lpm_response = %d\n",
+		       dwc_otg_get_lpmresponse(otg_dev->core_if));
+}
+
+/**
+* Store the lpm_response attribute.
+*/
+static ssize_t lpmresp_store(struct device *_dev,
+			     struct device_attribute *attr,
+			     const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	uint32_t val = simple_strtoul(buf, NULL, 16);
+
+	if (!dwc_otg_get_param_lpm_enable(otg_dev->core_if)) {
+		return 0;
+	}
+
+	if (!dwc_otg_is_device_mode(otg_dev->core_if)) {
+		return 0;
+	}
+
+	dwc_otg_set_lpmresponse(otg_dev->core_if, val);
+	return count;
+}
+
+DEVICE_ATTR(lpm_response, S_IRUGO | S_IWUSR, lpmresp_show, lpmresp_store);
+
+/**
+* Show the sleep_status attribute.
+*/
+static ssize_t sleepstatus_show(struct device *_dev,
+				struct device_attribute *attr, char *buf)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	return sprintf(buf, "Sleep Status = %d\n",
+		       dwc_otg_get_lpm_portsleepstatus(otg_dev->core_if));
+}
+
+/**
+ * Store the sleep_status attribure.
+ */
+static ssize_t sleepstatus_store(struct device *_dev,
+				 struct device_attribute *attr,
+				 const char *buf, size_t count)
+{
+        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
+	dwc_otg_core_if_t *core_if = otg_dev->core_if;
+
+	if (dwc_otg_get_lpm_portsleepstatus(otg_dev->core_if)) {
+		if (dwc_otg_is_host_mode(core_if)) {
+
+			DWC_PRINTF("Host initiated resume\n");
+			dwc_otg_set_prtresume(otg_dev->core_if, 1);
+		}
+	}
+
+	return count;
+}
+
+DEVICE_ATTR(sleep_status, S_IRUGO | S_IWUSR, sleepstatus_show,
+	    sleepstatus_store);
+
+#endif /* CONFIG_USB_DWC_OTG_LPM_ENABLE */
+
+/**@}*/
+
+/**
+ * Create the device files
+ */
+void dwc_otg_attr_create(
+#ifdef LM_INTERFACE
+	struct lm_device *dev
+#elif  defined(PCI_INTERFACE)
+	struct pci_dev *dev
+#elif  defined(PLATFORM_INTERFACE)
+        struct platform_device *dev
+#endif
+    )
+{
+	int error;
+
+	error = device_create_file(&dev->dev, &dev_attr_regoffset);
+	error = device_create_file(&dev->dev, &dev_attr_regvalue);
+	error = device_create_file(&dev->dev, &dev_attr_mode);
+	error = device_create_file(&dev->dev, &dev_attr_hnpcapable);
+	error = device_create_file(&dev->dev, &dev_attr_srpcapable);
+	error = device_create_file(&dev->dev, &dev_attr_hsic_connect);
+	error = device_create_file(&dev->dev, &dev_attr_inv_sel_hsic);
+	error = device_create_file(&dev->dev, &dev_attr_hnp);
+	error = device_create_file(&dev->dev, &dev_attr_srp);
+	error = device_create_file(&dev->dev, &dev_attr_buspower);
+	error = device_create_file(&dev->dev, &dev_attr_bussuspend);
+	error = device_create_file(&dev->dev, &dev_attr_mode_ch_tim_en);
+	error = device_create_file(&dev->dev, &dev_attr_fr_interval);
+	error = device_create_file(&dev->dev, &dev_attr_busconnected);
+	error = device_create_file(&dev->dev, &dev_attr_gotgctl);
+	error = device_create_file(&dev->dev, &dev_attr_gusbcfg);
+	error = device_create_file(&dev->dev, &dev_attr_grxfsiz);
+	error = device_create_file(&dev->dev, &dev_attr_gnptxfsiz);
+	error = device_create_file(&dev->dev, &dev_attr_gpvndctl);
+	error = device_create_file(&dev->dev, &dev_attr_ggpio);
+	error = device_create_file(&dev->dev, &dev_attr_guid);
+	error = device_create_file(&dev->dev, &dev_attr_gsnpsid);
+	error = device_create_file(&dev->dev, &dev_attr_devspeed);
+	error = device_create_file(&dev->dev, &dev_attr_enumspeed);
+	error = device_create_file(&dev->dev, &dev_attr_hptxfsiz);
+	error = device_create_file(&dev->dev, &dev_attr_hprt0);
+	error = device_create_file(&dev->dev, &dev_attr_remote_wakeup);
+	error = device_create_file(&dev->dev, &dev_attr_rem_wakeup_pwrdn);
+	error = device_create_file(&dev->dev, &dev_attr_disconnect_us);
+	error = device_create_file(&dev->dev, &dev_attr_regdump);
+	error = device_create_file(&dev->dev, &dev_attr_spramdump);
+	error = device_create_file(&dev->dev, &dev_attr_hcddump);
+	error = device_create_file(&dev->dev, &dev_attr_hcd_frrem);
+	error = device_create_file(&dev->dev, &dev_attr_rd_reg_test);
+	error = device_create_file(&dev->dev, &dev_attr_wr_reg_test);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	error = device_create_file(&dev->dev, &dev_attr_lpm_response);
+	error = device_create_file(&dev->dev, &dev_attr_sleep_status);
+#endif
+}
+
+/**
+ * Remove the device files
+ */
+void dwc_otg_attr_remove(
+#ifdef LM_INTERFACE
+	struct lm_device *dev
+#elif  defined(PCI_INTERFACE)
+	struct pci_dev *dev
+#elif  defined(PLATFORM_INTERFACE)
+	struct platform_device *dev
+#endif
+    )
+{
+	device_remove_file(&dev->dev, &dev_attr_regoffset);
+	device_remove_file(&dev->dev, &dev_attr_regvalue);
+	device_remove_file(&dev->dev, &dev_attr_mode);
+	device_remove_file(&dev->dev, &dev_attr_hnpcapable);
+	device_remove_file(&dev->dev, &dev_attr_srpcapable);
+	device_remove_file(&dev->dev, &dev_attr_hsic_connect);
+	device_remove_file(&dev->dev, &dev_attr_inv_sel_hsic);
+	device_remove_file(&dev->dev, &dev_attr_hnp);
+	device_remove_file(&dev->dev, &dev_attr_srp);
+	device_remove_file(&dev->dev, &dev_attr_buspower);
+	device_remove_file(&dev->dev, &dev_attr_bussuspend);
+	device_remove_file(&dev->dev, &dev_attr_mode_ch_tim_en);
+	device_remove_file(&dev->dev, &dev_attr_fr_interval);
+	device_remove_file(&dev->dev, &dev_attr_busconnected);
+	device_remove_file(&dev->dev, &dev_attr_gotgctl);
+	device_remove_file(&dev->dev, &dev_attr_gusbcfg);
+	device_remove_file(&dev->dev, &dev_attr_grxfsiz);
+	device_remove_file(&dev->dev, &dev_attr_gnptxfsiz);
+	device_remove_file(&dev->dev, &dev_attr_gpvndctl);
+	device_remove_file(&dev->dev, &dev_attr_ggpio);
+	device_remove_file(&dev->dev, &dev_attr_guid);
+	device_remove_file(&dev->dev, &dev_attr_gsnpsid);
+	device_remove_file(&dev->dev, &dev_attr_devspeed);
+	device_remove_file(&dev->dev, &dev_attr_enumspeed);
+	device_remove_file(&dev->dev, &dev_attr_hptxfsiz);
+	device_remove_file(&dev->dev, &dev_attr_hprt0);
+	device_remove_file(&dev->dev, &dev_attr_remote_wakeup);
+	device_remove_file(&dev->dev, &dev_attr_rem_wakeup_pwrdn);
+	device_remove_file(&dev->dev, &dev_attr_disconnect_us);
+	device_remove_file(&dev->dev, &dev_attr_regdump);
+	device_remove_file(&dev->dev, &dev_attr_spramdump);
+	device_remove_file(&dev->dev, &dev_attr_hcddump);
+	device_remove_file(&dev->dev, &dev_attr_hcd_frrem);
+	device_remove_file(&dev->dev, &dev_attr_rd_reg_test);
+	device_remove_file(&dev->dev, &dev_attr_wr_reg_test);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	device_remove_file(&dev->dev, &dev_attr_lpm_response);
+	device_remove_file(&dev->dev, &dev_attr_sleep_status);
+#endif
+}
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_attr.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_attr.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_attr.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_attr.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,89 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.h $
+ * $Revision: #13 $
+ * $Date: 2010/06/21 $
+ * $Change: 1532021 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_OTG_ATTR_H__)
+#define __DWC_OTG_ATTR_H__
+
+/** @file
+ * This file contains the interface to the Linux device attributes.
+ */
+extern struct device_attribute dev_attr_regoffset;
+extern struct device_attribute dev_attr_regvalue;
+
+extern struct device_attribute dev_attr_mode;
+extern struct device_attribute dev_attr_hnpcapable;
+extern struct device_attribute dev_attr_srpcapable;
+extern struct device_attribute dev_attr_hnp;
+extern struct device_attribute dev_attr_srp;
+extern struct device_attribute dev_attr_buspower;
+extern struct device_attribute dev_attr_bussuspend;
+extern struct device_attribute dev_attr_mode_ch_tim_en;
+extern struct device_attribute dev_attr_fr_interval;
+extern struct device_attribute dev_attr_busconnected;
+extern struct device_attribute dev_attr_gotgctl;
+extern struct device_attribute dev_attr_gusbcfg;
+extern struct device_attribute dev_attr_grxfsiz;
+extern struct device_attribute dev_attr_gnptxfsiz;
+extern struct device_attribute dev_attr_gpvndctl;
+extern struct device_attribute dev_attr_ggpio;
+extern struct device_attribute dev_attr_guid;
+extern struct device_attribute dev_attr_gsnpsid;
+extern struct device_attribute dev_attr_devspeed;
+extern struct device_attribute dev_attr_enumspeed;
+extern struct device_attribute dev_attr_hptxfsiz;
+extern struct device_attribute dev_attr_hprt0;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+extern struct device_attribute dev_attr_lpm_response;
+extern struct device_attribute devi_attr_sleep_status;
+#endif
+
+void dwc_otg_attr_create(
+#ifdef LM_INTERFACE
+				struct lm_device *dev
+#elif  defined(PCI_INTERFACE)
+				struct pci_dev *dev
+#elif  defined(PLATFORM_INTERFACE)
+	struct platform_device *dev
+#endif
+    );
+
+void dwc_otg_attr_remove(
+#ifdef LM_INTERFACE
+				struct lm_device *dev
+#elif  defined(PCI_INTERFACE)
+				struct pci_dev *dev
+#elif  defined(PLATFORM_INTERFACE)
+	struct platform_device *dev
+#endif
+    );
+#endif
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cfi.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cfi.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cfi.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cfi.c	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,1876 @@
+/* ==========================================================================
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * This file contains the most of the CFI(Core Feature Interface)
+ * implementation for the OTG.
+ */
+
+#ifdef DWC_UTE_CFI
+
+#include "dwc_otg_pcd.h"
+#include "dwc_otg_cfi.h"
+
+/** This definition should actually migrate to the Portability Library */
+#define DWC_CONSTANT_CPU_TO_LE16(x) (x)
+
+extern dwc_otg_pcd_ep_t *get_ep_by_addr(dwc_otg_pcd_t * pcd, u16 wIndex);
+
+static int cfi_core_features_buf(uint8_t * buf, uint16_t buflen);
+static int cfi_get_feature_value(uint8_t * buf, uint16_t buflen,
+				 struct dwc_otg_pcd *pcd,
+				 struct cfi_usb_ctrlrequest *ctrl_req);
+static int cfi_set_feature_value(struct dwc_otg_pcd *pcd);
+static int cfi_ep_get_sg_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+			     struct cfi_usb_ctrlrequest *req);
+static int cfi_ep_get_concat_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+				 struct cfi_usb_ctrlrequest *req);
+static int cfi_ep_get_align_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+				struct cfi_usb_ctrlrequest *req);
+static int cfi_preproc_reset(struct dwc_otg_pcd *pcd,
+			     struct cfi_usb_ctrlrequest *req);
+static void cfi_free_ep_bs_dyn_data(cfi_ep_t * cfiep);
+
+static uint16_t get_dfifo_size(dwc_otg_core_if_t * core_if);
+static int32_t get_rxfifo_size(dwc_otg_core_if_t * core_if, uint16_t wValue);
+static int32_t get_txfifo_size(struct dwc_otg_pcd *pcd, uint16_t wValue);
+
+static uint8_t resize_fifos(dwc_otg_core_if_t * core_if);
+
+/** This is the header of the all features descriptor */
+static cfi_all_features_header_t all_props_desc_header = {
+	.wVersion = DWC_CONSTANT_CPU_TO_LE16(0x100),
+	.wCoreID = DWC_CONSTANT_CPU_TO_LE16(CFI_CORE_ID_OTG),
+	.wNumFeatures = DWC_CONSTANT_CPU_TO_LE16(9),
+};
+
+/** This is an array of statically allocated feature descriptors */
+static cfi_feature_desc_header_t prop_descs[] = {
+
+	/* FT_ID_DMA_MODE */
+	{
+	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_MODE),
+	 .bmAttributes = CFI_FEATURE_ATTR_RW,
+	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(1),
+	 },
+
+	/* FT_ID_DMA_BUFFER_SETUP */
+	{
+	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_BUFFER_SETUP),
+	 .bmAttributes = CFI_FEATURE_ATTR_RW,
+	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(6),
+	 },
+
+	/* FT_ID_DMA_BUFF_ALIGN */
+	{
+	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_BUFF_ALIGN),
+	 .bmAttributes = CFI_FEATURE_ATTR_RW,
+	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
+	 },
+
+	/* FT_ID_DMA_CONCAT_SETUP */
+	{
+	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_CONCAT_SETUP),
+	 .bmAttributes = CFI_FEATURE_ATTR_RW,
+	 //.wDataLength  = DWC_CONSTANT_CPU_TO_LE16(6),
+	 },
+
+	/* FT_ID_DMA_CIRCULAR */
+	{
+	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_CIRCULAR),
+	 .bmAttributes = CFI_FEATURE_ATTR_RW,
+	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(6),
+	 },
+
+	/* FT_ID_THRESHOLD_SETUP */
+	{
+	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_THRESHOLD_SETUP),
+	 .bmAttributes = CFI_FEATURE_ATTR_RW,
+	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(6),
+	 },
+
+	/* FT_ID_DFIFO_DEPTH */
+	{
+	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DFIFO_DEPTH),
+	 .bmAttributes = CFI_FEATURE_ATTR_RO,
+	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
+	 },
+
+	/* FT_ID_TX_FIFO_DEPTH */
+	{
+	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_TX_FIFO_DEPTH),
+	 .bmAttributes = CFI_FEATURE_ATTR_RW,
+	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
+	 },
+
+	/* FT_ID_RX_FIFO_DEPTH */
+	{
+	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_RX_FIFO_DEPTH),
+	 .bmAttributes = CFI_FEATURE_ATTR_RW,
+	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
+	 }
+};
+
+/** The table of feature names */
+cfi_string_t prop_name_table[] = {
+	{FT_ID_DMA_MODE, "dma_mode"},
+	{FT_ID_DMA_BUFFER_SETUP, "buffer_setup"},
+	{FT_ID_DMA_BUFF_ALIGN, "buffer_align"},
+	{FT_ID_DMA_CONCAT_SETUP, "concat_setup"},
+	{FT_ID_DMA_CIRCULAR, "buffer_circular"},
+	{FT_ID_THRESHOLD_SETUP, "threshold_setup"},
+	{FT_ID_DFIFO_DEPTH, "dfifo_depth"},
+	{FT_ID_TX_FIFO_DEPTH, "txfifo_depth"},
+	{FT_ID_RX_FIFO_DEPTH, "rxfifo_depth"},
+	{}
+};
+
+/************************************************************************/
+
+/**
+ * Returns the name of the feature by its ID
+ * or NULL if no featute ID matches.
+ *
+ */
+const uint8_t *get_prop_name(uint16_t prop_id, int *len)
+{
+	cfi_string_t *pstr;
+	*len = 0;
+
+	for (pstr = prop_name_table; pstr && pstr->s; pstr++) {
+		if (pstr->id == prop_id) {
+			*len = DWC_STRLEN(pstr->s);
+			return pstr->s;
+		}
+	}
+	return NULL;
+}
+
+/**
+ * This function handles all CFI specific control requests.
+ *
+ * Return a negative value to stall the DCE.
+ */
+int cfi_setup(struct dwc_otg_pcd *pcd, struct cfi_usb_ctrlrequest *ctrl)
+{
+	int retval = 0;
+	dwc_otg_pcd_ep_t *ep = NULL;
+	cfiobject_t *cfi = pcd->cfi;
+	struct dwc_otg_core_if *coreif = GET_CORE_IF(pcd);
+	uint16_t wLen = DWC_LE16_TO_CPU(&ctrl->wLength);
+	uint16_t wValue = DWC_LE16_TO_CPU(&ctrl->wValue);
+	uint16_t wIndex = DWC_LE16_TO_CPU(&ctrl->wIndex);
+	uint32_t regaddr = 0;
+	uint32_t regval = 0;
+
+	/* Save this Control Request in the CFI object.
+	 * The data field will be assigned in the data stage completion CB function.
+	 */
+	cfi->ctrl_req = *ctrl;
+	cfi->ctrl_req.data = NULL;
+
+	cfi->need_gadget_att = 0;
+	cfi->need_status_in_complete = 0;
+
+	switch (ctrl->bRequest) {
+	case VEN_CORE_GET_FEATURES:
+		retval = cfi_core_features_buf(cfi->buf_in.buf, CFI_IN_BUF_LEN);
+		if (retval >= 0) {
+			//dump_msg(cfi->buf_in.buf, retval);
+			ep = &pcd->ep0;
+
+			retval = min((uint16_t) retval, wLen);
+			/* Transfer this buffer to the host through the EP0-IN EP */
+			ep->dwc_ep.dma_addr = cfi->buf_in.addr;
+			ep->dwc_ep.start_xfer_buff = cfi->buf_in.buf;
+			ep->dwc_ep.xfer_buff = cfi->buf_in.buf;
+			ep->dwc_ep.xfer_len = retval;
+			ep->dwc_ep.xfer_count = 0;
+			ep->dwc_ep.sent_zlp = 0;
+			ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+			pcd->ep0_pending = 1;
+			dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+		}
+		retval = 0;
+		break;
+
+	case VEN_CORE_GET_FEATURE:
+		CFI_INFO("VEN_CORE_GET_FEATURE\n");
+		retval = cfi_get_feature_value(cfi->buf_in.buf, CFI_IN_BUF_LEN,
+					       pcd, ctrl);
+		if (retval >= 0) {
+			ep = &pcd->ep0;
+
+			retval = min((uint16_t) retval, wLen);
+			/* Transfer this buffer to the host through the EP0-IN EP */
+			ep->dwc_ep.dma_addr = cfi->buf_in.addr;
+			ep->dwc_ep.start_xfer_buff = cfi->buf_in.buf;
+			ep->dwc_ep.xfer_buff = cfi->buf_in.buf;
+			ep->dwc_ep.xfer_len = retval;
+			ep->dwc_ep.xfer_count = 0;
+			ep->dwc_ep.sent_zlp = 0;
+			ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+			pcd->ep0_pending = 1;
+			dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+		}
+		CFI_INFO("VEN_CORE_GET_FEATURE=%d\n", retval);
+		dump_msg(cfi->buf_in.buf, retval);
+		break;
+
+	case VEN_CORE_SET_FEATURE:
+		CFI_INFO("VEN_CORE_SET_FEATURE\n");
+		/* Set up an XFER to get the data stage of the control request,
+		 * which is the new value of the feature to be modified.
+		 */
+		ep = &pcd->ep0;
+		ep->dwc_ep.is_in = 0;
+		ep->dwc_ep.dma_addr = cfi->buf_out.addr;
+		ep->dwc_ep.start_xfer_buff = cfi->buf_out.buf;
+		ep->dwc_ep.xfer_buff = cfi->buf_out.buf;
+		ep->dwc_ep.xfer_len = wLen;
+		ep->dwc_ep.xfer_count = 0;
+		ep->dwc_ep.sent_zlp = 0;
+		ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+		pcd->ep0_pending = 1;
+		/* Read the control write's data stage */
+		dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+		retval = 0;
+		break;
+
+	case VEN_CORE_RESET_FEATURES:
+		CFI_INFO("VEN_CORE_RESET_FEATURES\n");
+		cfi->need_gadget_att = 1;
+		cfi->need_status_in_complete = 1;
+		retval = cfi_preproc_reset(pcd, ctrl);
+		CFI_INFO("VEN_CORE_RESET_FEATURES = (%d)\n", retval);
+		break;
+
+	case VEN_CORE_ACTIVATE_FEATURES:
+		CFI_INFO("VEN_CORE_ACTIVATE_FEATURES\n");
+		break;
+
+	case VEN_CORE_READ_REGISTER:
+		CFI_INFO("VEN_CORE_READ_REGISTER\n");
+		/* wValue optionally contains the HI WORD of the register offset and
+		 * wIndex contains the LOW WORD of the register offset
+		 */
+		if (wValue == 0) {
+			/* @TODO - MAS - fix the access to the base field */
+			regaddr = 0;
+			//regaddr = (uint32_t) pcd->otg_dev->os_dep.base;
+			//GET_CORE_IF(pcd)->co
+			regaddr |= wIndex;
+		} else {
+			regaddr = (wValue << 16) | wIndex;
+		}
+
+		/* Read a 32-bit value of the memory at the regaddr */
+		regval = DWC_READ_REG32((uint32_t *) regaddr);
+
+		ep = &pcd->ep0;
+		dwc_memcpy(cfi->buf_in.buf, &regval, sizeof(uint32_t));
+		ep->dwc_ep.is_in = 1;
+		ep->dwc_ep.dma_addr = cfi->buf_in.addr;
+		ep->dwc_ep.start_xfer_buff = cfi->buf_in.buf;
+		ep->dwc_ep.xfer_buff = cfi->buf_in.buf;
+		ep->dwc_ep.xfer_len = wLen;
+		ep->dwc_ep.xfer_count = 0;
+		ep->dwc_ep.sent_zlp = 0;
+		ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+		pcd->ep0_pending = 1;
+		dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+		cfi->need_gadget_att = 0;
+		retval = 0;
+		break;
+
+	case VEN_CORE_WRITE_REGISTER:
+		CFI_INFO("VEN_CORE_WRITE_REGISTER\n");
+		/* Set up an XFER to get the data stage of the control request,
+		 * which is the new value of the register to be modified.
+		 */
+		ep = &pcd->ep0;
+		ep->dwc_ep.is_in = 0;
+		ep->dwc_ep.dma_addr = cfi->buf_out.addr;
+		ep->dwc_ep.start_xfer_buff = cfi->buf_out.buf;
+		ep->dwc_ep.xfer_buff = cfi->buf_out.buf;
+		ep->dwc_ep.xfer_len = wLen;
+		ep->dwc_ep.xfer_count = 0;
+		ep->dwc_ep.sent_zlp = 0;
+		ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+		pcd->ep0_pending = 1;
+		/* Read the control write's data stage */
+		dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
+		retval = 0;
+		break;
+
+	default:
+		retval = -DWC_E_NOT_SUPPORTED;
+		break;
+	}
+
+	return retval;
+}
+
+/**
+ * This function prepares the core features descriptors and copies its
+ * raw representation into the buffer <buf>.
+ *
+ * The buffer structure is as follows:
+ *	all_features_header (8 bytes)
+ *	features_#1 (8 bytes + feature name string length)
+ *	features_#2 (8 bytes + feature name string length)
+ *	.....
+ *	features_#n - where n=the total count of feature descriptors
+ */
+static int cfi_core_features_buf(uint8_t * buf, uint16_t buflen)
+{
+	cfi_feature_desc_header_t *prop_hdr = prop_descs;
+	cfi_feature_desc_header_t *prop;
+	cfi_all_features_header_t *all_props_hdr = &all_props_desc_header;
+	cfi_all_features_header_t *tmp;
+	uint8_t *tmpbuf = buf;
+	const uint8_t *pname = NULL;
+	int i, j, namelen = 0, totlen;
+
+	/* Prepare and copy the core features into the buffer */
+	CFI_INFO("%s:\n", __func__);
+
+	tmp = (cfi_all_features_header_t *) tmpbuf;
+	*tmp = *all_props_hdr;
+	tmpbuf += CFI_ALL_FEATURES_HDR_LEN;
+
+	j = sizeof(prop_descs) / sizeof(cfi_all_features_header_t);
+	for (i = 0; i < j; i++, prop_hdr++) {
+		pname = get_prop_name(prop_hdr->wFeatureID, &namelen);
+		prop = (cfi_feature_desc_header_t *) tmpbuf;
+		*prop = *prop_hdr;
+
+		prop->bNameLen = namelen;
+		prop->wLength =
+		    DWC_CONSTANT_CPU_TO_LE16(CFI_FEATURE_DESC_HDR_LEN +
+					     namelen);
+
+		tmpbuf += CFI_FEATURE_DESC_HDR_LEN;
+		dwc_memcpy(tmpbuf, pname, namelen);
+		tmpbuf += namelen;
+	}
+
+	totlen = tmpbuf - buf;
+
+	if (totlen > 0) {
+		tmp = (cfi_all_features_header_t *) buf;
+		tmp->wTotalLen = DWC_CONSTANT_CPU_TO_LE16(totlen);
+	}
+
+	return totlen;
+}
+
+/**
+ * This function releases all the dynamic memory in the CFI object.
+ */
+static void cfi_release(cfiobject_t * cfiobj)
+{
+	cfi_ep_t *cfiep;
+	dwc_list_link_t *tmp;
+
+	CFI_INFO("%s\n", __func__);
+
+	if (cfiobj->buf_in.buf) {
+		DWC_DMA_FREE(CFI_IN_BUF_LEN, cfiobj->buf_in.buf,
+			     cfiobj->buf_in.addr);
+		cfiobj->buf_in.buf = NULL;
+	}
+
+	if (cfiobj->buf_out.buf) {
+		DWC_DMA_FREE(CFI_OUT_BUF_LEN, cfiobj->buf_out.buf,
+			     cfiobj->buf_out.addr);
+		cfiobj->buf_out.buf = NULL;
+	}
+
+	/* Free the Buffer Setup values for each EP */
+	//list_for_each_entry(cfiep, &cfiobj->active_eps, lh) {
+	DWC_LIST_FOREACH(tmp, &cfiobj->active_eps) {
+		cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+		cfi_free_ep_bs_dyn_data(cfiep);
+	}
+}
+
+/**
+ * This function frees the dynamically allocated EP buffer setup data.
+ */
+static void cfi_free_ep_bs_dyn_data(cfi_ep_t * cfiep)
+{
+	if (cfiep->bm_sg) {
+		DWC_FREE(cfiep->bm_sg);
+		cfiep->bm_sg = NULL;
+	}
+
+	if (cfiep->bm_align) {
+		DWC_FREE(cfiep->bm_align);
+		cfiep->bm_align = NULL;
+	}
+
+	if (cfiep->bm_concat) {
+		if (NULL != cfiep->bm_concat->wTxBytes) {
+			DWC_FREE(cfiep->bm_concat->wTxBytes);
+			cfiep->bm_concat->wTxBytes = NULL;
+		}
+		DWC_FREE(cfiep->bm_concat);
+		cfiep->bm_concat = NULL;
+	}
+}
+
+/**
+ * This function initializes the default values of the features
+ * for a specific endpoint and should be called only once when
+ * the EP is enabled first time.
+ */
+static int cfi_ep_init_defaults(struct dwc_otg_pcd *pcd, cfi_ep_t * cfiep)
+{
+	int retval = 0;
+
+	cfiep->bm_sg = DWC_ALLOC(sizeof(ddma_sg_buffer_setup_t));
+	if (NULL == cfiep->bm_sg) {
+		CFI_INFO("Failed to allocate memory for SG feature value\n");
+		return -DWC_E_NO_MEMORY;
+	}
+	dwc_memset(cfiep->bm_sg, 0, sizeof(ddma_sg_buffer_setup_t));
+
+	/* For the Concatenation feature's default value we do not allocate
+	 * memory for the wTxBytes field - it will be done in the set_feature_value
+	 * request handler.
+	 */
+	cfiep->bm_concat = DWC_ALLOC(sizeof(ddma_concat_buffer_setup_t));
+	if (NULL == cfiep->bm_concat) {
+		CFI_INFO
+		    ("Failed to allocate memory for CONCATENATION feature value\n");
+		DWC_FREE(cfiep->bm_sg);
+		return -DWC_E_NO_MEMORY;
+	}
+	dwc_memset(cfiep->bm_concat, 0, sizeof(ddma_concat_buffer_setup_t));
+
+	cfiep->bm_align = DWC_ALLOC(sizeof(ddma_align_buffer_setup_t));
+	if (NULL == cfiep->bm_align) {
+		CFI_INFO
+		    ("Failed to allocate memory for Alignment feature value\n");
+		DWC_FREE(cfiep->bm_sg);
+		DWC_FREE(cfiep->bm_concat);
+		return -DWC_E_NO_MEMORY;
+	}
+	dwc_memset(cfiep->bm_align, 0, sizeof(ddma_align_buffer_setup_t));
+
+	return retval;
+}
+
+/**
+ * The callback function that notifies the CFI on the activation of
+ * an endpoint in the PCD. The following steps are done in this function:
+ *
+ *	Create a dynamically allocated cfi_ep_t object (a CFI wrapper to the PCD's
+ *		active endpoint)
+ *	Create MAX_DMA_DESCS_PER_EP count DMA Descriptors for the EP
+ *	Set the Buffer Mode to standard
+ *	Initialize the default values for all EP modes (SG, Circular, Concat, Align)
+ *	Add the cfi_ep_t object to the list of active endpoints in the CFI object
+ */
+static int cfi_ep_enable(struct cfiobject *cfi, struct dwc_otg_pcd *pcd,
+			 struct dwc_otg_pcd_ep *ep)
+{
+	cfi_ep_t *cfiep;
+	int retval = -DWC_E_NOT_SUPPORTED;
+
+	CFI_INFO("%s: epname=%s; epnum=0x%02x\n", __func__,
+		 "EP_" /*ep->ep.name */ , ep->desc->bEndpointAddress);
+	/* MAS - Check whether this endpoint already is in the list */
+	cfiep = get_cfi_ep_by_pcd_ep(cfi, ep);
+
+	if (NULL == cfiep) {
+		/* Allocate a cfi_ep_t object */
+		cfiep = DWC_ALLOC(sizeof(cfi_ep_t));
+		if (NULL == cfiep) {
+			CFI_INFO
+			    ("Unable to allocate memory for <cfiep> in function %s\n",
+			     __func__);
+			return -DWC_E_NO_MEMORY;
+		}
+		dwc_memset(cfiep, 0, sizeof(cfi_ep_t));
+
+		/* Save the dwc_otg_pcd_ep pointer in the cfiep object */
+		cfiep->ep = ep;
+
+		/* Allocate the DMA Descriptors chain of MAX_DMA_DESCS_PER_EP count */
+		ep->dwc_ep.descs =
+		    DWC_DMA_ALLOC(MAX_DMA_DESCS_PER_EP *
+				  sizeof(dwc_otg_dma_desc_t),
+				  &ep->dwc_ep.descs_dma_addr);
+
+		if (NULL == ep->dwc_ep.descs) {
+			DWC_FREE(cfiep);
+			return -DWC_E_NO_MEMORY;
+		}
+
+		DWC_LIST_INIT(&cfiep->lh);
+
+		/* Set the buffer mode to BM_STANDARD. It will be modified
+		 * when building descriptors for a specific buffer mode */
+		ep->dwc_ep.buff_mode = BM_STANDARD;
+
+		/* Create and initialize the default values for this EP's Buffer modes */
+		if ((retval = cfi_ep_init_defaults(pcd, cfiep)) < 0)
+			return retval;
+
+		/* Add the cfi_ep_t object to the CFI object's list of active endpoints */
+		DWC_LIST_INSERT_TAIL(&cfi->active_eps, &cfiep->lh);
+		retval = 0;
+	} else {		/* The sought EP already is in the list */
+		CFI_INFO("%s: The sought EP already is in the list\n",
+			 __func__);
+	}
+
+	return retval;
+}
+
+/**
+ * This function is called when the data stage of a 3-stage Control Write request
+ * is complete.
+ *
+ */
+static int cfi_ctrl_write_complete(struct cfiobject *cfi,
+				   struct dwc_otg_pcd *pcd)
+{
+	uint32_t addr, reg_value;
+	uint16_t wIndex, wValue;
+	uint8_t bRequest;
+	uint8_t *buf = cfi->buf_out.buf;
+	//struct usb_ctrlrequest *ctrl_req = &cfi->ctrl_req_saved;
+	struct cfi_usb_ctrlrequest *ctrl_req = &cfi->ctrl_req;
+	int retval = -DWC_E_NOT_SUPPORTED;
+
+	CFI_INFO("%s\n", __func__);
+
+	bRequest = ctrl_req->bRequest;
+	wIndex = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wIndex);
+	wValue = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wValue);
+
+	/*
+	 * Save the pointer to the data stage in the ctrl_req's <data> field.
+	 * The request should be already saved in the command stage by now.
+	 */
+	ctrl_req->data = cfi->buf_out.buf;
+	cfi->need_status_in_complete = 0;
+	cfi->need_gadget_att = 0;
+
+	switch (bRequest) {
+	case VEN_CORE_WRITE_REGISTER:
+		/* The buffer contains raw data of the new value for the register */
+		reg_value = *((uint32_t *) buf);
+		if (wValue == 0) {
+			addr = 0;
+			//addr = (uint32_t) pcd->otg_dev->os_dep.base;
+			addr += wIndex;
+		} else {
+			addr = (wValue << 16) | wIndex;
+		}
+
+		//writel(reg_value, addr);
+
+		retval = 0;
+		cfi->need_status_in_complete = 1;
+		break;
+
+	case VEN_CORE_SET_FEATURE:
+		/* The buffer contains raw data of the new value of the feature */
+		retval = cfi_set_feature_value(pcd);
+		if (retval < 0)
+			return retval;
+
+		cfi->need_status_in_complete = 1;
+		break;
+
+	default:
+		break;
+	}
+
+	return retval;
+}
+
+/**
+ * This function builds the DMA descriptors for the SG buffer mode.
+ */
+static void cfi_build_sg_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
+			       dwc_otg_pcd_request_t * req)
+{
+	struct dwc_otg_pcd_ep *ep = cfiep->ep;
+	ddma_sg_buffer_setup_t *sgval = cfiep->bm_sg;
+	struct dwc_otg_dma_desc *desc = cfiep->ep->dwc_ep.descs;
+	struct dwc_otg_dma_desc *desc_last = cfiep->ep->dwc_ep.descs;
+	dma_addr_t buff_addr = req->dma;
+	int i;
+	uint32_t txsize, off;
+
+	txsize = sgval->wSize;
+	off = sgval->bOffset;
+
+//      CFI_INFO("%s: %s TXSIZE=0x%08x; OFFSET=0x%08x\n",
+//              __func__, cfiep->ep->ep.name, txsize, off);
+
+	for (i = 0; i < sgval->bCount; i++) {
+		desc->status.b.bs = BS_HOST_BUSY;
+		desc->buf = buff_addr;
+		desc->status.b.l = 0;
+		desc->status.b.ioc = 0;
+		desc->status.b.sp = 0;
+		desc->status.b.bytes = txsize;
+		desc->status.b.bs = BS_HOST_READY;
+
+		/* Set the next address of the buffer */
+		buff_addr += txsize + off;
+		desc_last = desc;
+		desc++;
+	}
+
+	/* Set the last, ioc and sp bits on the Last DMA Descriptor */
+	desc_last->status.b.l = 1;
+	desc_last->status.b.ioc = 1;
+	desc_last->status.b.sp = ep->dwc_ep.sent_zlp;
+	/* Save the last DMA descriptor pointer */
+	cfiep->dma_desc_last = desc_last;
+	cfiep->desc_count = sgval->bCount;
+}
+
+/**
+ * This function builds the DMA descriptors for the Concatenation buffer mode.
+ */
+static void cfi_build_concat_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
+				   dwc_otg_pcd_request_t * req)
+{
+	struct dwc_otg_pcd_ep *ep = cfiep->ep;
+	ddma_concat_buffer_setup_t *concatval = cfiep->bm_concat;
+	struct dwc_otg_dma_desc *desc = cfiep->ep->dwc_ep.descs;
+	struct dwc_otg_dma_desc *desc_last = cfiep->ep->dwc_ep.descs;
+	dma_addr_t buff_addr = req->dma;
+	int i;
+	uint16_t *txsize;
+
+	txsize = concatval->wTxBytes;
+
+	for (i = 0; i < concatval->hdr.bDescCount; i++) {
+		desc->buf = buff_addr;
+		desc->status.b.bs = BS_HOST_BUSY;
+		desc->status.b.l = 0;
+		desc->status.b.ioc = 0;
+		desc->status.b.sp = 0;
+		desc->status.b.bytes = *txsize;
+		desc->status.b.bs = BS_HOST_READY;
+
+		txsize++;
+		/* Set the next address of the buffer */
+		buff_addr += UGETW(ep->desc->wMaxPacketSize);
+		desc_last = desc;
+		desc++;
+	}
+
+	/* Set the last, ioc and sp bits on the Last DMA Descriptor */
+	desc_last->status.b.l = 1;
+	desc_last->status.b.ioc = 1;
+	desc_last->status.b.sp = ep->dwc_ep.sent_zlp;
+	cfiep->dma_desc_last = desc_last;
+	cfiep->desc_count = concatval->hdr.bDescCount;
+}
+
+/**
+ * This function builds the DMA descriptors for the Circular buffer mode
+ */
+static void cfi_build_circ_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
+				 dwc_otg_pcd_request_t * req)
+{
+	/* @todo: MAS - add implementation when this feature needs to be tested */
+}
+
+/**
+ * This function builds the DMA descriptors for the Alignment buffer mode
+ */
+static void cfi_build_align_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
+				  dwc_otg_pcd_request_t * req)
+{
+	struct dwc_otg_pcd_ep *ep = cfiep->ep;
+	ddma_align_buffer_setup_t *alignval = cfiep->bm_align;
+	struct dwc_otg_dma_desc *desc = cfiep->ep->dwc_ep.descs;
+	dma_addr_t buff_addr = req->dma;
+
+	desc->status.b.bs = BS_HOST_BUSY;
+	desc->status.b.l = 1;
+	desc->status.b.ioc = 1;
+	desc->status.b.sp = ep->dwc_ep.sent_zlp;
+	desc->status.b.bytes = req->length;
+	/* Adjust the buffer alignment */
+	desc->buf = (buff_addr + alignval->bAlign);
+	desc->status.b.bs = BS_HOST_READY;
+	cfiep->dma_desc_last = desc;
+	cfiep->desc_count = 1;
+}
+
+/**
+ * This function builds the DMA descriptors chain for different modes of the
+ * buffer setup of an endpoint.
+ */
+static void cfi_build_descriptors(struct cfiobject *cfi,
+				  struct dwc_otg_pcd *pcd,
+				  struct dwc_otg_pcd_ep *ep,
+				  dwc_otg_pcd_request_t * req)
+{
+	cfi_ep_t *cfiep;
+
+	/* Get the cfiep by the dwc_otg_pcd_ep */
+	cfiep = get_cfi_ep_by_pcd_ep(cfi, ep);
+	if (NULL == cfiep) {
+		CFI_INFO("%s: Unable to find a matching active endpoint\n",
+			 __func__);
+		return;
+	}
+
+	cfiep->xfer_len = req->length;
+
+	/* Iterate through all the DMA descriptors */
+	switch (cfiep->ep->dwc_ep.buff_mode) {
+	case BM_SG:
+		cfi_build_sg_descs(cfi, cfiep, req);
+		break;
+
+	case BM_CONCAT:
+		cfi_build_concat_descs(cfi, cfiep, req);
+		break;
+
+	case BM_CIRCULAR:
+		cfi_build_circ_descs(cfi, cfiep, req);
+		break;
+
+	case BM_ALIGN:
+		cfi_build_align_descs(cfi, cfiep, req);
+		break;
+
+	default:
+		break;
+	}
+}
+
+/**
+ * Allocate DMA buffer for different Buffer modes.
+ */
+static void *cfi_ep_alloc_buf(struct cfiobject *cfi, struct dwc_otg_pcd *pcd,
+			      struct dwc_otg_pcd_ep *ep, dma_addr_t * dma,
+			      unsigned size, gfp_t flags)
+{
+	return DWC_DMA_ALLOC(size, dma);
+}
+
+/**
+ * This function initializes the CFI object.
+ */
+int init_cfi(cfiobject_t * cfiobj)
+{
+	CFI_INFO("%s\n", __func__);
+
+	/* Allocate a buffer for IN XFERs */
+	cfiobj->buf_in.buf =
+	    DWC_DMA_ALLOC(CFI_IN_BUF_LEN, &cfiobj->buf_in.addr);
+	if (NULL == cfiobj->buf_in.buf) {
+		CFI_INFO("Unable to allocate buffer for INs\n");
+		return -DWC_E_NO_MEMORY;
+	}
+
+	/* Allocate a buffer for OUT XFERs */
+	cfiobj->buf_out.buf =
+	    DWC_DMA_ALLOC(CFI_OUT_BUF_LEN, &cfiobj->buf_out.addr);
+	if (NULL == cfiobj->buf_out.buf) {
+		CFI_INFO("Unable to allocate buffer for OUT\n");
+		return -DWC_E_NO_MEMORY;
+	}
+
+	/* Initialize the callback function pointers */
+	cfiobj->ops.release = cfi_release;
+	cfiobj->ops.ep_enable = cfi_ep_enable;
+	cfiobj->ops.ctrl_write_complete = cfi_ctrl_write_complete;
+	cfiobj->ops.build_descriptors = cfi_build_descriptors;
+	cfiobj->ops.ep_alloc_buf = cfi_ep_alloc_buf;
+
+	/* Initialize the list of active endpoints in the CFI object */
+	DWC_LIST_INIT(&cfiobj->active_eps);
+
+	return 0;
+}
+
+/**
+ * This function reads the required feature's current value into the buffer
+ *
+ * @retval: Returns negative as error, or the data length of the feature
+ */
+static int cfi_get_feature_value(uint8_t * buf, uint16_t buflen,
+				 struct dwc_otg_pcd *pcd,
+				 struct cfi_usb_ctrlrequest *ctrl_req)
+{
+	int retval = -DWC_E_NOT_SUPPORTED;
+	struct dwc_otg_core_if *coreif = GET_CORE_IF(pcd);
+	uint16_t dfifo, rxfifo, txfifo;
+
+	switch (ctrl_req->wIndex) {
+		/* Whether the DDMA is enabled or not */
+	case FT_ID_DMA_MODE:
+		*buf = (coreif->dma_enable && coreif->dma_desc_enable) ? 1 : 0;
+		retval = 1;
+		break;
+
+	case FT_ID_DMA_BUFFER_SETUP:
+		retval = cfi_ep_get_sg_val(buf, pcd, ctrl_req);
+		break;
+
+	case FT_ID_DMA_BUFF_ALIGN:
+		retval = cfi_ep_get_align_val(buf, pcd, ctrl_req);
+		break;
+
+	case FT_ID_DMA_CONCAT_SETUP:
+		retval = cfi_ep_get_concat_val(buf, pcd, ctrl_req);
+		break;
+
+	case FT_ID_DMA_CIRCULAR:
+		CFI_INFO("GetFeature value (FT_ID_DMA_CIRCULAR)\n");
+		break;
+
+	case FT_ID_THRESHOLD_SETUP:
+		CFI_INFO("GetFeature value (FT_ID_THRESHOLD_SETUP)\n");
+		break;
+
+	case FT_ID_DFIFO_DEPTH:
+		dfifo = get_dfifo_size(coreif);
+		*((uint16_t *) buf) = dfifo;
+		retval = sizeof(uint16_t);
+		break;
+
+	case FT_ID_TX_FIFO_DEPTH:
+		retval = get_txfifo_size(pcd, ctrl_req->wValue);
+		if (retval >= 0) {
+			txfifo = retval;
+			*((uint16_t *) buf) = txfifo;
+			retval = sizeof(uint16_t);
+		}
+		break;
+
+	case FT_ID_RX_FIFO_DEPTH:
+		retval = get_rxfifo_size(coreif, ctrl_req->wValue);
+		if (retval >= 0) {
+			rxfifo = retval;
+			*((uint16_t *) buf) = rxfifo;
+			retval = sizeof(uint16_t);
+		}
+		break;
+	}
+
+	return retval;
+}
+
+/**
+ * This function resets the SG for the specified EP to its default value
+ */
+static int cfi_reset_sg_val(cfi_ep_t * cfiep)
+{
+	dwc_memset(cfiep->bm_sg, 0, sizeof(ddma_sg_buffer_setup_t));
+	return 0;
+}
+
+/**
+ * This function resets the Alignment for the specified EP to its default value
+ */
+static int cfi_reset_align_val(cfi_ep_t * cfiep)
+{
+	dwc_memset(cfiep->bm_sg, 0, sizeof(ddma_sg_buffer_setup_t));
+	return 0;
+}
+
+/**
+ * This function resets the Concatenation for the specified EP to its default value
+ * This function will also set the value of the wTxBytes field to NULL after
+ * freeing the memory previously allocated for this field.
+ */
+static int cfi_reset_concat_val(cfi_ep_t * cfiep)
+{
+	/* First we need to free the wTxBytes field */
+	if (cfiep->bm_concat->wTxBytes) {
+		DWC_FREE(cfiep->bm_concat->wTxBytes);
+		cfiep->bm_concat->wTxBytes = NULL;
+	}
+
+	dwc_memset(cfiep->bm_concat, 0, sizeof(ddma_concat_buffer_setup_t));
+	return 0;
+}
+
+/**
+ * This function resets all the buffer setups of the specified endpoint
+ */
+static int cfi_ep_reset_all_setup_vals(cfi_ep_t * cfiep)
+{
+	cfi_reset_sg_val(cfiep);
+	cfi_reset_align_val(cfiep);
+	cfi_reset_concat_val(cfiep);
+	return 0;
+}
+
+static int cfi_handle_reset_fifo_val(struct dwc_otg_pcd *pcd, uint8_t ep_addr,
+				     uint8_t rx_rst, uint8_t tx_rst)
+{
+	int retval = -DWC_E_INVALID;
+	uint16_t tx_siz[15];
+	uint16_t rx_siz = 0;
+	dwc_otg_pcd_ep_t *ep = NULL;
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_core_params_t *params = GET_CORE_IF(pcd)->core_params;
+
+	if (rx_rst) {
+		rx_siz = params->dev_rx_fifo_size;
+		params->dev_rx_fifo_size = GET_CORE_IF(pcd)->init_rxfsiz;
+	}
+
+	if (tx_rst) {
+		if (ep_addr == 0) {
+			int i;
+
+			for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+				tx_siz[i] =
+				    core_if->core_params->dev_tx_fifo_size[i];
+				core_if->core_params->dev_tx_fifo_size[i] =
+				    core_if->init_txfsiz[i];
+			}
+		} else {
+
+			ep = get_ep_by_addr(pcd, ep_addr);
+
+			if (NULL == ep) {
+				CFI_INFO
+				    ("%s: Unable to get the endpoint addr=0x%02x\n",
+				     __func__, ep_addr);
+				return -DWC_E_INVALID;
+			}
+
+			tx_siz[0] =
+			    params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num -
+						     1];
+			params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1] =
+			    GET_CORE_IF(pcd)->init_txfsiz[ep->
+							  dwc_ep.tx_fifo_num -
+							  1];
+		}
+	}
+
+	if (resize_fifos(GET_CORE_IF(pcd))) {
+		retval = 0;
+	} else {
+		CFI_INFO
+		    ("%s: Error resetting the feature Reset All(FIFO size)\n",
+		     __func__);
+		if (rx_rst) {
+			params->dev_rx_fifo_size = rx_siz;
+		}
+
+		if (tx_rst) {
+			if (ep_addr == 0) {
+				int i;
+				for (i = 0; i < core_if->hwcfg4.b.num_in_eps;
+				     i++) {
+					core_if->
+					    core_params->dev_tx_fifo_size[i] =
+					    tx_siz[i];
+				}
+			} else {
+				params->dev_tx_fifo_size[ep->
+							 dwc_ep.tx_fifo_num -
+							 1] = tx_siz[0];
+			}
+		}
+		retval = -DWC_E_INVALID;
+	}
+	return retval;
+}
+
+static int cfi_handle_reset_all(struct dwc_otg_pcd *pcd, uint8_t addr)
+{
+	int retval = 0;
+	cfi_ep_t *cfiep;
+	cfiobject_t *cfi = pcd->cfi;
+	dwc_list_link_t *tmp;
+
+	retval = cfi_handle_reset_fifo_val(pcd, addr, 1, 1);
+	if (retval < 0) {
+		return retval;
+	}
+
+	/* If the EP address is known then reset the features for only that EP */
+	if (addr) {
+		cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
+		if (NULL == cfiep) {
+			CFI_INFO("%s: Error getting the EP address 0x%02x\n",
+				 __func__, addr);
+			return -DWC_E_INVALID;
+		}
+		retval = cfi_ep_reset_all_setup_vals(cfiep);
+		cfiep->ep->dwc_ep.buff_mode = BM_STANDARD;
+	}
+	/* Otherwise (wValue == 0), reset all features of all EP's */
+	else {
+		/* Traverse all the active EP's and reset the feature(s) value(s) */
+		//list_for_each_entry(cfiep, &cfi->active_eps, lh) {
+		DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+			cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+			retval = cfi_ep_reset_all_setup_vals(cfiep);
+			cfiep->ep->dwc_ep.buff_mode = BM_STANDARD;
+			if (retval < 0) {
+				CFI_INFO
+				    ("%s: Error resetting the feature Reset All\n",
+				     __func__);
+				return retval;
+			}
+		}
+	}
+	return retval;
+}
+
+static int cfi_handle_reset_dma_buff_setup(struct dwc_otg_pcd *pcd,
+					   uint8_t addr)
+{
+	int retval = 0;
+	cfi_ep_t *cfiep;
+	cfiobject_t *cfi = pcd->cfi;
+	dwc_list_link_t *tmp;
+
+	/* If the EP address is known then reset the features for only that EP */
+	if (addr) {
+		cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
+		if (NULL == cfiep) {
+			CFI_INFO("%s: Error getting the EP address 0x%02x\n",
+				 __func__, addr);
+			return -DWC_E_INVALID;
+		}
+		retval = cfi_reset_sg_val(cfiep);
+	}
+	/* Otherwise (wValue == 0), reset all features of all EP's */
+	else {
+		/* Traverse all the active EP's and reset the feature(s) value(s) */
+		//list_for_each_entry(cfiep, &cfi->active_eps, lh) {
+		DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+			cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+			retval = cfi_reset_sg_val(cfiep);
+			if (retval < 0) {
+				CFI_INFO
+				    ("%s: Error resetting the feature Buffer Setup\n",
+				     __func__);
+				return retval;
+			}
+		}
+	}
+	return retval;
+}
+
+static int cfi_handle_reset_concat_val(struct dwc_otg_pcd *pcd, uint8_t addr)
+{
+	int retval = 0;
+	cfi_ep_t *cfiep;
+	cfiobject_t *cfi = pcd->cfi;
+	dwc_list_link_t *tmp;
+
+	/* If the EP address is known then reset the features for only that EP */
+	if (addr) {
+		cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
+		if (NULL == cfiep) {
+			CFI_INFO("%s: Error getting the EP address 0x%02x\n",
+				 __func__, addr);
+			return -DWC_E_INVALID;
+		}
+		retval = cfi_reset_concat_val(cfiep);
+	}
+	/* Otherwise (wValue == 0), reset all features of all EP's */
+	else {
+		/* Traverse all the active EP's and reset the feature(s) value(s) */
+		//list_for_each_entry(cfiep, &cfi->active_eps, lh) {
+		DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+			cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+			retval = cfi_reset_concat_val(cfiep);
+			if (retval < 0) {
+				CFI_INFO
+				    ("%s: Error resetting the feature Concatenation Value\n",
+				     __func__);
+				return retval;
+			}
+		}
+	}
+	return retval;
+}
+
+static int cfi_handle_reset_align_val(struct dwc_otg_pcd *pcd, uint8_t addr)
+{
+	int retval = 0;
+	cfi_ep_t *cfiep;
+	cfiobject_t *cfi = pcd->cfi;
+	dwc_list_link_t *tmp;
+
+	/* If the EP address is known then reset the features for only that EP */
+	if (addr) {
+		cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
+		if (NULL == cfiep) {
+			CFI_INFO("%s: Error getting the EP address 0x%02x\n",
+				 __func__, addr);
+			return -DWC_E_INVALID;
+		}
+		retval = cfi_reset_align_val(cfiep);
+	}
+	/* Otherwise (wValue == 0), reset all features of all EP's */
+	else {
+		/* Traverse all the active EP's and reset the feature(s) value(s) */
+		//list_for_each_entry(cfiep, &cfi->active_eps, lh) {
+		DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+			cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+			retval = cfi_reset_align_val(cfiep);
+			if (retval < 0) {
+				CFI_INFO
+				    ("%s: Error resetting the feature Aliignment Value\n",
+				     __func__);
+				return retval;
+			}
+		}
+	}
+	return retval;
+
+}
+
+static int cfi_preproc_reset(struct dwc_otg_pcd *pcd,
+			     struct cfi_usb_ctrlrequest *req)
+{
+	int retval = 0;
+
+	switch (req->wIndex) {
+	case 0:
+		/* Reset all features */
+		retval = cfi_handle_reset_all(pcd, req->wValue & 0xff);
+		break;
+
+	case FT_ID_DMA_BUFFER_SETUP:
+		/* Reset the SG buffer setup */
+		retval =
+		    cfi_handle_reset_dma_buff_setup(pcd, req->wValue & 0xff);
+		break;
+
+	case FT_ID_DMA_CONCAT_SETUP:
+		/* Reset the Concatenation buffer setup */
+		retval = cfi_handle_reset_concat_val(pcd, req->wValue & 0xff);
+		break;
+
+	case FT_ID_DMA_BUFF_ALIGN:
+		/* Reset the Alignment buffer setup */
+		retval = cfi_handle_reset_align_val(pcd, req->wValue & 0xff);
+		break;
+
+	case FT_ID_TX_FIFO_DEPTH:
+		retval =
+		    cfi_handle_reset_fifo_val(pcd, req->wValue & 0xff, 0, 1);
+		pcd->cfi->need_gadget_att = 0;
+		break;
+
+	case FT_ID_RX_FIFO_DEPTH:
+		retval = cfi_handle_reset_fifo_val(pcd, 0, 1, 0);
+		pcd->cfi->need_gadget_att = 0;
+		break;
+	default:
+		break;
+	}
+	return retval;
+}
+
+/**
+ * This function sets a new value for the SG buffer setup.
+ */
+static int cfi_ep_set_sg_val(uint8_t * buf, struct dwc_otg_pcd *pcd)
+{
+	uint8_t inaddr, outaddr;
+	cfi_ep_t *epin, *epout;
+	ddma_sg_buffer_setup_t *psgval;
+	uint32_t desccount, size;
+
+	CFI_INFO("%s\n", __func__);
+
+	psgval = (ddma_sg_buffer_setup_t *) buf;
+	desccount = (uint32_t) psgval->bCount;
+	size = (uint32_t) psgval->wSize;
+
+	/* Check the DMA descriptor count */
+	if ((desccount > MAX_DMA_DESCS_PER_EP) || (desccount == 0)) {
+		CFI_INFO
+		    ("%s: The count of DMA Descriptors should be between 1 and %d\n",
+		     __func__, MAX_DMA_DESCS_PER_EP);
+		return -DWC_E_INVALID;
+	}
+
+	/* Check the DMA descriptor count */
+
+	if (size == 0) {
+
+		CFI_INFO("%s: The transfer size should be at least 1 byte\n",
+			 __func__);
+
+		return -DWC_E_INVALID;
+
+	}
+
+	inaddr = psgval->bInEndpointAddress;
+	outaddr = psgval->bOutEndpointAddress;
+
+	epin = get_cfi_ep_by_addr(pcd->cfi, inaddr);
+	epout = get_cfi_ep_by_addr(pcd->cfi, outaddr);
+
+	if (NULL == epin || NULL == epout) {
+		CFI_INFO
+		    ("%s: Unable to get the endpoints inaddr=0x%02x outaddr=0x%02x\n",
+		     __func__, inaddr, outaddr);
+		return -DWC_E_INVALID;
+	}
+
+	epin->ep->dwc_ep.buff_mode = BM_SG;
+	dwc_memcpy(epin->bm_sg, psgval, sizeof(ddma_sg_buffer_setup_t));
+
+	epout->ep->dwc_ep.buff_mode = BM_SG;
+	dwc_memcpy(epout->bm_sg, psgval, sizeof(ddma_sg_buffer_setup_t));
+
+	return 0;
+}
+
+/**
+ * This function sets a new value for the buffer Alignment setup.
+ */
+static int cfi_ep_set_alignment_val(uint8_t * buf, struct dwc_otg_pcd *pcd)
+{
+	cfi_ep_t *ep;
+	uint8_t addr;
+	ddma_align_buffer_setup_t *palignval;
+
+	palignval = (ddma_align_buffer_setup_t *) buf;
+	addr = palignval->bEndpointAddress;
+
+	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+
+	if (NULL == ep) {
+		CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
+			 __func__, addr);
+		return -DWC_E_INVALID;
+	}
+
+	ep->ep->dwc_ep.buff_mode = BM_ALIGN;
+	dwc_memcpy(ep->bm_align, palignval, sizeof(ddma_align_buffer_setup_t));
+
+	return 0;
+}
+
+/**
+ * This function sets a new value for the Concatenation buffer setup.
+ */
+static int cfi_ep_set_concat_val(uint8_t * buf, struct dwc_otg_pcd *pcd)
+{
+	uint8_t addr;
+	cfi_ep_t *ep;
+	struct _ddma_concat_buffer_setup_hdr *pConcatValHdr;
+	uint16_t *pVals;
+	uint32_t desccount;
+	int i;
+	uint16_t mps;
+
+	pConcatValHdr = (struct _ddma_concat_buffer_setup_hdr *)buf;
+	desccount = (uint32_t) pConcatValHdr->bDescCount;
+	pVals = (uint16_t *) (buf + BS_CONCAT_VAL_HDR_LEN);
+
+	/* Check the DMA descriptor count */
+	if (desccount > MAX_DMA_DESCS_PER_EP) {
+		CFI_INFO("%s: Maximum DMA Descriptor count should be %d\n",
+			 __func__, MAX_DMA_DESCS_PER_EP);
+		return -DWC_E_INVALID;
+	}
+
+	addr = pConcatValHdr->bEndpointAddress;
+	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+	if (NULL == ep) {
+		CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
+			 __func__, addr);
+		return -DWC_E_INVALID;
+	}
+
+	mps = UGETW(ep->ep->desc->wMaxPacketSize);
+
+#if 0
+	for (i = 0; i < desccount; i++) {
+		CFI_INFO("%s: wTxSize[%d]=0x%04x\n", __func__, i, pVals[i]);
+	}
+	CFI_INFO("%s: epname=%s; mps=%d\n", __func__, ep->ep->ep.name, mps);
+#endif
+
+	/* Check the wTxSizes to be less than or equal to the mps */
+	for (i = 0; i < desccount; i++) {
+		if (pVals[i] > mps) {
+			CFI_INFO
+			    ("%s: ERROR - the wTxSize[%d] should be <= MPS (wTxSize=%d)\n",
+			     __func__, i, pVals[i]);
+			return -DWC_E_INVALID;
+		}
+	}
+
+	ep->ep->dwc_ep.buff_mode = BM_CONCAT;
+	dwc_memcpy(ep->bm_concat, pConcatValHdr, BS_CONCAT_VAL_HDR_LEN);
+
+	/* Free the previously allocated storage for the wTxBytes */
+	if (ep->bm_concat->wTxBytes) {
+		DWC_FREE(ep->bm_concat->wTxBytes);
+	}
+
+	/* Allocate a new storage for the wTxBytes field */
+	ep->bm_concat->wTxBytes =
+	    DWC_ALLOC(sizeof(uint16_t) * pConcatValHdr->bDescCount);
+	if (NULL == ep->bm_concat->wTxBytes) {
+		CFI_INFO("%s: Unable to allocate memory\n", __func__);
+		return -DWC_E_NO_MEMORY;
+	}
+
+	/* Copy the new values into the wTxBytes filed */
+	dwc_memcpy(ep->bm_concat->wTxBytes, buf + BS_CONCAT_VAL_HDR_LEN,
+		   sizeof(uint16_t) * pConcatValHdr->bDescCount);
+
+	return 0;
+}
+
+/**
+ * This function calculates the total of all FIFO sizes
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return The total of data FIFO sizes.
+ *
+ */
+static uint16_t get_dfifo_size(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_core_params_t *params = core_if->core_params;
+	uint16_t dfifo_total = 0;
+	int i;
+
+	/* The shared RxFIFO size */
+	dfifo_total =
+	    params->dev_rx_fifo_size + params->dev_nperio_tx_fifo_size;
+
+	/* Add up each TxFIFO size to the total */
+	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+		dfifo_total += params->dev_tx_fifo_size[i];
+	}
+
+	return dfifo_total;
+}
+
+/**
+ * This function returns Rx FIFO size
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return The total of data FIFO sizes.
+ *
+ */
+static int32_t get_rxfifo_size(dwc_otg_core_if_t * core_if, uint16_t wValue)
+{
+	switch (wValue >> 8) {
+	case 0:
+		return (core_if->pwron_rxfsiz <
+			32768) ? core_if->pwron_rxfsiz : 32768;
+		break;
+	case 1:
+		return core_if->core_params->dev_rx_fifo_size;
+		break;
+	default:
+		return -DWC_E_INVALID;
+		break;
+	}
+}
+
+/**
+ * This function returns Tx FIFO size for IN EP
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return The total of data FIFO sizes.
+ *
+ */
+static int32_t get_txfifo_size(struct dwc_otg_pcd *pcd, uint16_t wValue)
+{
+	dwc_otg_pcd_ep_t *ep;
+
+	ep = get_ep_by_addr(pcd, wValue & 0xff);
+
+	if (NULL == ep) {
+		CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
+			 __func__, wValue & 0xff);
+		return -DWC_E_INVALID;
+	}
+
+	if (!ep->dwc_ep.is_in) {
+		CFI_INFO
+		    ("%s: No Tx FIFO assingned to the Out endpoint addr=0x%02x\n",
+		     __func__, wValue & 0xff);
+		return -DWC_E_INVALID;
+	}
+
+	switch (wValue >> 8) {
+	case 0:
+		return (GET_CORE_IF(pcd)->pwron_txfsiz
+			[ep->dwc_ep.tx_fifo_num - 1] <
+			768) ? GET_CORE_IF(pcd)->pwron_txfsiz[ep->
+							      dwc_ep.tx_fifo_num
+							      - 1] : 32768;
+		break;
+	case 1:
+		return GET_CORE_IF(pcd)->core_params->
+		    dev_tx_fifo_size[ep->dwc_ep.num - 1];
+		break;
+	default:
+		return -DWC_E_INVALID;
+		break;
+	}
+}
+
+/**
+ * This function checks if the submitted combination of
+ * device mode FIFO sizes is possible or not.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return 1 if possible, 0 otherwise.
+ *
+ */
+static uint8_t check_fifo_sizes(dwc_otg_core_if_t * core_if)
+{
+	uint16_t dfifo_actual = 0;
+	dwc_otg_core_params_t *params = core_if->core_params;
+	uint16_t start_addr = 0;
+	int i;
+
+	dfifo_actual =
+	    params->dev_rx_fifo_size + params->dev_nperio_tx_fifo_size;
+
+	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+		dfifo_actual += params->dev_tx_fifo_size[i];
+	}
+
+	if (dfifo_actual > core_if->total_fifo_size) {
+		return 0;
+	}
+
+	if (params->dev_rx_fifo_size > 32768 || params->dev_rx_fifo_size < 16)
+		return 0;
+
+	if (params->dev_nperio_tx_fifo_size > 32768
+	    || params->dev_nperio_tx_fifo_size < 16)
+		return 0;
+
+	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+
+		if (params->dev_tx_fifo_size[i] > 768
+		    || params->dev_tx_fifo_size[i] < 4)
+			return 0;
+	}
+
+	if (params->dev_rx_fifo_size > core_if->pwron_rxfsiz)
+		return 0;
+	start_addr = params->dev_rx_fifo_size;
+
+	if (params->dev_nperio_tx_fifo_size > core_if->pwron_gnptxfsiz)
+		return 0;
+	start_addr += params->dev_nperio_tx_fifo_size;
+
+	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+
+		if (params->dev_tx_fifo_size[i] > core_if->pwron_txfsiz[i])
+			return 0;
+		start_addr += params->dev_tx_fifo_size[i];
+	}
+
+	return 1;
+}
+
+/**
+ * This function resizes Device mode FIFOs
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ * @return 1 if successful, 0 otherwise
+ *
+ */
+static uint8_t resize_fifos(dwc_otg_core_if_t * core_if)
+{
+	int i = 0;
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	dwc_otg_core_params_t *params = core_if->core_params;
+	uint32_t rx_fifo_size;
+	fifosize_data_t nptxfifosize;
+	fifosize_data_t txfifosize[15];
+
+	uint32_t rx_fsz_bak;
+	uint32_t nptxfsz_bak;
+	uint32_t txfsz_bak[15];
+
+	uint16_t start_address;
+	uint8_t retval = 1;
+
+	if (!check_fifo_sizes(core_if)) {
+		return 0;
+	}
+
+	/* Configure data FIFO sizes */
+	if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
+		rx_fsz_bak = DWC_READ_REG32(&global_regs->grxfsiz);
+		rx_fifo_size = params->dev_rx_fifo_size;
+		DWC_WRITE_REG32(&global_regs->grxfsiz, rx_fifo_size);
+
+		/*
+		 * Tx FIFOs These FIFOs are numbered from 1 to 15.
+		 * Indexes of the FIFO size module parameters in the
+		 * dev_tx_fifo_size array and the FIFO size registers in
+		 * the dtxfsiz array run from 0 to 14.
+		 */
+
+		/* Non-periodic Tx FIFO */
+		nptxfsz_bak = DWC_READ_REG32(&global_regs->gnptxfsiz);
+		nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
+		start_address = params->dev_rx_fifo_size;
+		nptxfifosize.b.startaddr = start_address;
+
+		DWC_WRITE_REG32(&global_regs->gnptxfsiz, nptxfifosize.d32);
+
+		start_address += nptxfifosize.b.depth;
+
+		for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+			txfsz_bak[i] = DWC_READ_REG32(&global_regs->dtxfsiz[i]);
+
+			txfifosize[i].b.depth = params->dev_tx_fifo_size[i];
+			txfifosize[i].b.startaddr = start_address;
+			DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
+					txfifosize[i].d32);
+
+			start_address += txfifosize[i].b.depth;
+		}
+
+		/** Check if register values are set correctly */
+		if (rx_fifo_size != DWC_READ_REG32(&global_regs->grxfsiz)) {
+			retval = 0;
+		}
+
+		if (nptxfifosize.d32 != DWC_READ_REG32(&global_regs->gnptxfsiz)) {
+			retval = 0;
+		}
+
+		for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+			if (txfifosize[i].d32 !=
+			    DWC_READ_REG32(&global_regs->dtxfsiz[i])) {
+				retval = 0;
+			}
+		}
+
+		/** If register values are not set correctly, reset old values */
+		if (retval == 0) {
+			DWC_WRITE_REG32(&global_regs->grxfsiz, rx_fsz_bak);
+
+			/* Non-periodic Tx FIFO */
+			DWC_WRITE_REG32(&global_regs->gnptxfsiz, nptxfsz_bak);
+
+			for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+				DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
+						txfsz_bak[i]);
+			}
+		}
+	} else {
+		return 0;
+	}
+
+	/* Flush the FIFOs */
+	dwc_otg_flush_tx_fifo(core_if, 0x10);	/* all Tx FIFOs */
+	dwc_otg_flush_rx_fifo(core_if);
+
+	return retval;
+}
+
+/**
+ * This function sets a new value for the buffer Alignment setup.
+ */
+static int cfi_ep_set_tx_fifo_val(uint8_t * buf, dwc_otg_pcd_t * pcd)
+{
+	int retval;
+	uint32_t fsiz;
+	uint16_t size;
+	uint16_t ep_addr;
+	dwc_otg_pcd_ep_t *ep;
+	dwc_otg_core_params_t *params = GET_CORE_IF(pcd)->core_params;
+	tx_fifo_size_setup_t *ptxfifoval;
+
+	ptxfifoval = (tx_fifo_size_setup_t *) buf;
+	ep_addr = ptxfifoval->bEndpointAddress;
+	size = ptxfifoval->wDepth;
+
+	ep = get_ep_by_addr(pcd, ep_addr);
+
+	CFI_INFO
+	    ("%s: Set Tx FIFO size: endpoint addr=0x%02x, depth=%d, FIFO Num=%d\n",
+	     __func__, ep_addr, size, ep->dwc_ep.tx_fifo_num);
+
+	if (NULL == ep) {
+		CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
+			 __func__, ep_addr);
+		return -DWC_E_INVALID;
+	}
+
+	fsiz = params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1];
+	params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1] = size;
+
+	if (resize_fifos(GET_CORE_IF(pcd))) {
+		retval = 0;
+	} else {
+		CFI_INFO
+		    ("%s: Error setting the feature Tx FIFO Size for EP%d\n",
+		     __func__, ep_addr);
+		params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1] = fsiz;
+		retval = -DWC_E_INVALID;
+	}
+
+	return retval;
+}
+
+/**
+ * This function sets a new value for the buffer Alignment setup.
+ */
+static int cfi_set_rx_fifo_val(uint8_t * buf, dwc_otg_pcd_t * pcd)
+{
+	int retval;
+	uint32_t fsiz;
+	uint16_t size;
+	dwc_otg_core_params_t *params = GET_CORE_IF(pcd)->core_params;
+	rx_fifo_size_setup_t *prxfifoval;
+
+	prxfifoval = (rx_fifo_size_setup_t *) buf;
+	size = prxfifoval->wDepth;
+
+	fsiz = params->dev_rx_fifo_size;
+	params->dev_rx_fifo_size = size;
+
+	if (resize_fifos(GET_CORE_IF(pcd))) {
+		retval = 0;
+	} else {
+		CFI_INFO("%s: Error setting the feature Rx FIFO Size\n",
+			 __func__);
+		params->dev_rx_fifo_size = fsiz;
+		retval = -DWC_E_INVALID;
+	}
+
+	return retval;
+}
+
+/**
+ * This function reads the SG of an EP's buffer setup into the buffer buf
+ */
+static int cfi_ep_get_sg_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+			     struct cfi_usb_ctrlrequest *req)
+{
+	int retval = -DWC_E_INVALID;
+	uint8_t addr;
+	cfi_ep_t *ep;
+
+	/* The Low Byte of the wValue contains a non-zero address of the endpoint */
+	addr = req->wValue & 0xFF;
+	if (addr == 0)		/* The address should be non-zero */
+		return retval;
+
+	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+	if (NULL == ep) {
+		CFI_INFO("%s: Unable to get the endpoint address(0x%02x)\n",
+			 __func__, addr);
+		return retval;
+	}
+
+	dwc_memcpy(buf, ep->bm_sg, BS_SG_VAL_DESC_LEN);
+	retval = BS_SG_VAL_DESC_LEN;
+	return retval;
+}
+
+/**
+ * This function reads the Concatenation value of an EP's buffer mode into
+ * the buffer buf
+ */
+static int cfi_ep_get_concat_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+				 struct cfi_usb_ctrlrequest *req)
+{
+	int retval = -DWC_E_INVALID;
+	uint8_t addr;
+	cfi_ep_t *ep;
+	uint8_t desc_count;
+
+	/* The Low Byte of the wValue contains a non-zero address of the endpoint */
+	addr = req->wValue & 0xFF;
+	if (addr == 0)		/* The address should be non-zero */
+		return retval;
+
+	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+	if (NULL == ep) {
+		CFI_INFO("%s: Unable to get the endpoint address(0x%02x)\n",
+			 __func__, addr);
+		return retval;
+	}
+
+	/* Copy the header to the buffer */
+	dwc_memcpy(buf, ep->bm_concat, BS_CONCAT_VAL_HDR_LEN);
+	/* Advance the buffer pointer by the header size */
+	buf += BS_CONCAT_VAL_HDR_LEN;
+
+	desc_count = ep->bm_concat->hdr.bDescCount;
+	/* Copy alll the wTxBytes to the buffer */
+	dwc_memcpy(buf, ep->bm_concat->wTxBytes, sizeof(uid16_t) * desc_count);
+
+	retval = BS_CONCAT_VAL_HDR_LEN + sizeof(uid16_t) * desc_count;
+	return retval;
+}
+
+/**
+ * This function reads the buffer Alignment value of an EP's buffer mode into
+ * the buffer buf
+ *
+ * @return The total number of bytes copied to the buffer or negative error code.
+ */
+static int cfi_ep_get_align_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
+				struct cfi_usb_ctrlrequest *req)
+{
+	int retval = -DWC_E_INVALID;
+	uint8_t addr;
+	cfi_ep_t *ep;
+
+	/* The Low Byte of the wValue contains a non-zero address of the endpoint */
+	addr = req->wValue & 0xFF;
+	if (addr == 0)		/* The address should be non-zero */
+		return retval;
+
+	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
+	if (NULL == ep) {
+		CFI_INFO("%s: Unable to get the endpoint address(0x%02x)\n",
+			 __func__, addr);
+		return retval;
+	}
+
+	dwc_memcpy(buf, ep->bm_align, BS_ALIGN_VAL_HDR_LEN);
+	retval = BS_ALIGN_VAL_HDR_LEN;
+
+	return retval;
+}
+
+/**
+ * This function sets a new value for the specified feature
+ *
+ * @param	pcd	A pointer to the PCD object
+ *
+ * @return 0 if successful, negative error code otherwise to stall the DCE.
+ */
+static int cfi_set_feature_value(struct dwc_otg_pcd *pcd)
+{
+	int retval = -DWC_E_NOT_SUPPORTED;
+	uint16_t wIndex, wValue;
+	uint8_t bRequest;
+	struct dwc_otg_core_if *coreif;
+	cfiobject_t *cfi = pcd->cfi;
+	struct cfi_usb_ctrlrequest *ctrl_req;
+	uint8_t *buf;
+	ctrl_req = &cfi->ctrl_req;
+
+	buf = pcd->cfi->ctrl_req.data;
+
+	coreif = GET_CORE_IF(pcd);
+	bRequest = ctrl_req->bRequest;
+	wIndex = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wIndex);
+	wValue = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wValue);
+
+	/* See which feature is to be modified */
+	switch (wIndex) {
+	case FT_ID_DMA_BUFFER_SETUP:
+		/* Modify the feature */
+		if ((retval = cfi_ep_set_sg_val(buf, pcd)) < 0)
+			return retval;
+
+		/* And send this request to the gadget */
+		cfi->need_gadget_att = 1;
+		break;
+
+	case FT_ID_DMA_BUFF_ALIGN:
+		if ((retval = cfi_ep_set_alignment_val(buf, pcd)) < 0)
+			return retval;
+		cfi->need_gadget_att = 1;
+		break;
+
+	case FT_ID_DMA_CONCAT_SETUP:
+		/* Modify the feature */
+		if ((retval = cfi_ep_set_concat_val(buf, pcd)) < 0)
+			return retval;
+		cfi->need_gadget_att = 1;
+		break;
+
+	case FT_ID_DMA_CIRCULAR:
+		CFI_INFO("FT_ID_DMA_CIRCULAR\n");
+		break;
+
+	case FT_ID_THRESHOLD_SETUP:
+		CFI_INFO("FT_ID_THRESHOLD_SETUP\n");
+		break;
+
+	case FT_ID_DFIFO_DEPTH:
+		CFI_INFO("FT_ID_DFIFO_DEPTH\n");
+		break;
+
+	case FT_ID_TX_FIFO_DEPTH:
+		CFI_INFO("FT_ID_TX_FIFO_DEPTH\n");
+		if ((retval = cfi_ep_set_tx_fifo_val(buf, pcd)) < 0)
+			return retval;
+		cfi->need_gadget_att = 0;
+		break;
+
+	case FT_ID_RX_FIFO_DEPTH:
+		CFI_INFO("FT_ID_RX_FIFO_DEPTH\n");
+		if ((retval = cfi_set_rx_fifo_val(buf, pcd)) < 0)
+			return retval;
+		cfi->need_gadget_att = 0;
+		break;
+	}
+
+	return retval;
+}
+
+#endif //DWC_UTE_CFI
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cfi.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cfi.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cfi.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cfi.h	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,320 @@
+/* ==========================================================================
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_OTG_CFI_H__)
+#define __DWC_OTG_CFI_H__
+
+#include "dwc_otg_pcd.h"
+#include "dwc_cfi_common.h"
+
+/**
+ * @file
+ * This file contains the CFI related OTG PCD specific common constants,
+ * interfaces(functions and macros) and data structures.The CFI Protocol is an
+ * optional interface for internal testing purposes that a DUT may implement to
+ * support testing of configurable features.
+ *
+ */
+
+struct dwc_otg_pcd;
+struct dwc_otg_pcd_ep;
+
+/** OTG CFI Features (properties) ID constants */
+/** This is a request for all Core Features */
+#define FT_ID_DMA_MODE					0x0001
+#define FT_ID_DMA_BUFFER_SETUP			0x0002
+#define FT_ID_DMA_BUFF_ALIGN			0x0003
+#define FT_ID_DMA_CONCAT_SETUP			0x0004
+#define FT_ID_DMA_CIRCULAR				0x0005
+#define FT_ID_THRESHOLD_SETUP			0x0006
+#define FT_ID_DFIFO_DEPTH				0x0007
+#define FT_ID_TX_FIFO_DEPTH				0x0008
+#define FT_ID_RX_FIFO_DEPTH				0x0009
+
+/**********************************************************/
+#define CFI_INFO_DEF
+
+#ifdef CFI_INFO_DEF
+#define CFI_INFO(fmt...)	DWC_PRINTF("CFI: " fmt);
+#else
+#define CFI_INFO(fmt...)
+#endif
+
+#define min(x,y) ({ \
+	x < y ? x : y; })
+
+#define max(x,y) ({ \
+	x > y ? x : y; })
+
+/**
+ * Descriptor DMA SG Buffer setup structure (SG buffer). This structure is
+ * also used for setting up a buffer for Circular DDMA.
+ */
+struct _ddma_sg_buffer_setup {
+#define BS_SG_VAL_DESC_LEN	6
+	/* The OUT EP address */
+	uint8_t bOutEndpointAddress;
+	/* The IN EP address */
+	uint8_t bInEndpointAddress;
+	/* Number of bytes to put between transfer segments (must be DWORD boundaries) */
+	uint8_t bOffset;
+	/* The number of transfer segments (a DMA descriptors per each segment) */
+	uint8_t bCount;
+	/* Size (in byte) of each transfer segment */
+	uint16_t wSize;
+} __attribute__ ((packed));
+typedef struct _ddma_sg_buffer_setup ddma_sg_buffer_setup_t;
+
+/** Descriptor DMA Concatenation Buffer setup structure */
+struct _ddma_concat_buffer_setup_hdr {
+#define BS_CONCAT_VAL_HDR_LEN	4
+	/* The endpoint for which the buffer is to be set up */
+	uint8_t bEndpointAddress;
+	/* The count of descriptors to be used */
+	uint8_t bDescCount;
+	/* The total size of the transfer */
+	uint16_t wSize;
+} __attribute__ ((packed));
+typedef struct _ddma_concat_buffer_setup_hdr ddma_concat_buffer_setup_hdr_t;
+
+/** Descriptor DMA Concatenation Buffer setup structure */
+struct _ddma_concat_buffer_setup {
+	/* The SG header */
+	ddma_concat_buffer_setup_hdr_t hdr;
+
+	/* The XFER sizes pointer (allocated dynamically) */
+	uint16_t *wTxBytes;
+} __attribute__ ((packed));
+typedef struct _ddma_concat_buffer_setup ddma_concat_buffer_setup_t;
+
+/** Descriptor DMA Alignment Buffer setup structure */
+struct _ddma_align_buffer_setup {
+#define BS_ALIGN_VAL_HDR_LEN	2
+	uint8_t bEndpointAddress;
+	uint8_t bAlign;
+} __attribute__ ((packed));
+typedef struct _ddma_align_buffer_setup ddma_align_buffer_setup_t;
+
+/** Transmit FIFO Size setup structure */
+struct _tx_fifo_size_setup {
+	uint8_t bEndpointAddress;
+	uint16_t wDepth;
+} __attribute__ ((packed));
+typedef struct _tx_fifo_size_setup tx_fifo_size_setup_t;
+
+/** Transmit FIFO Size setup structure */
+struct _rx_fifo_size_setup {
+	uint16_t wDepth;
+} __attribute__ ((packed));
+typedef struct _rx_fifo_size_setup rx_fifo_size_setup_t;
+
+/**
+ * struct cfi_usb_ctrlrequest - the CFI implementation of the struct usb_ctrlrequest
+ * This structure encapsulates the standard usb_ctrlrequest and adds a pointer
+ * to the data returned in the data stage of a 3-stage Control Write requests.
+ */
+struct cfi_usb_ctrlrequest {
+	uint8_t bRequestType;
+	uint8_t bRequest;
+	uint16_t wValue;
+	uint16_t wIndex;
+	uint16_t wLength;
+	uint8_t *data;
+} UPACKED;
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * The CFI wrapper of the enabled and activated dwc_otg_pcd_ep structures.
+ * This structure is used to store the buffer setup data for any
+ * enabled endpoint in the PCD.
+ */
+struct cfi_ep {
+	/* Entry for the list container */
+	dwc_list_link_t lh;
+	/* Pointer to the active PCD endpoint structure */
+	struct dwc_otg_pcd_ep *ep;
+	/* The last descriptor in the chain of DMA descriptors of the endpoint */
+	struct dwc_otg_dma_desc *dma_desc_last;
+	/* The SG feature value */
+	ddma_sg_buffer_setup_t *bm_sg;
+	/* The Circular feature value */
+	ddma_sg_buffer_setup_t *bm_circ;
+	/* The Concatenation feature value */
+	ddma_concat_buffer_setup_t *bm_concat;
+	/* The Alignment feature value */
+	ddma_align_buffer_setup_t *bm_align;
+	/* XFER length */
+	uint32_t xfer_len;
+	/*
+	 * Count of DMA descriptors currently used.
+	 * The total should not exceed the MAX_DMA_DESCS_PER_EP value
+	 * defined in the dwc_otg_cil.h
+	 */
+	uint32_t desc_count;
+};
+typedef struct cfi_ep cfi_ep_t;
+
+typedef struct cfi_dma_buff {
+#define CFI_IN_BUF_LEN	1024
+#define CFI_OUT_BUF_LEN	1024
+	dma_addr_t addr;
+	uint8_t *buf;
+} cfi_dma_buff_t;
+
+struct cfiobject;
+
+/**
+ * This is the interface for the CFI operations.
+ *
+ * @param	ep_enable			Called when any endpoint is enabled and activated.
+ * @param	release				Called when the CFI object is released and it needs to correctly
+ *								deallocate the dynamic memory
+ * @param	ctrl_write_complete	Called when the data stage of the request is complete
+ */
+typedef struct cfi_ops {
+	int (*ep_enable) (struct cfiobject * cfi, struct dwc_otg_pcd * pcd,
+			  struct dwc_otg_pcd_ep * ep);
+	void *(*ep_alloc_buf) (struct cfiobject * cfi, struct dwc_otg_pcd * pcd,
+			       struct dwc_otg_pcd_ep * ep, dma_addr_t * dma,
+			       unsigned size, gfp_t flags);
+	void (*release) (struct cfiobject * cfi);
+	int (*ctrl_write_complete) (struct cfiobject * cfi,
+				    struct dwc_otg_pcd * pcd);
+	void (*build_descriptors) (struct cfiobject * cfi,
+				   struct dwc_otg_pcd * pcd,
+				   struct dwc_otg_pcd_ep * ep,
+				   dwc_otg_pcd_request_t * req);
+} cfi_ops_t;
+
+struct cfiobject {
+	cfi_ops_t ops;
+	struct dwc_otg_pcd *pcd;
+	struct usb_gadget *gadget;
+
+	/* Buffers used to send/receive CFI-related request data */
+	cfi_dma_buff_t buf_in;
+	cfi_dma_buff_t buf_out;
+
+	/* CFI specific Control request wrapper */
+	struct cfi_usb_ctrlrequest ctrl_req;
+
+	/* The list of active EP's in the PCD of type cfi_ep_t */
+	dwc_list_link_t active_eps;
+
+	/* This flag shall control the propagation of a specific request
+	 * to the gadget's processing routines.
+	 * 0 - no gadget handling
+	 * 1 - the gadget needs to know about this request (w/o completing a status
+	 * phase - just return a 0 to the _setup callback)
+	 */
+	uint8_t need_gadget_att;
+
+	/* Flag indicating whether the status IN phase needs to be
+	 * completed by the PCD
+	 */
+	uint8_t need_status_in_complete;
+};
+typedef struct cfiobject cfiobject_t;
+
+#define DUMP_MSG
+
+#if defined(DUMP_MSG)
+static inline void dump_msg(const u8 * buf, unsigned int length)
+{
+	unsigned int start, num, i;
+	char line[52], *p;
+
+	if (length >= 512)
+		return;
+
+	start = 0;
+	while (length > 0) {
+		num = min(length, 16u);
+		p = line;
+		for (i = 0; i < num; ++i) {
+			if (i == 8)
+				*p++ = ' ';
+			DWC_SPRINTF(p, " %02x", buf[i]);
+			p += 3;
+		}
+		*p = 0;
+		DWC_DEBUG("%6x: %s\n", start, line);
+		buf += num;
+		start += num;
+		length -= num;
+	}
+}
+#else
+static inline void dump_msg(const u8 * buf, unsigned int length)
+{
+}
+#endif
+
+/**
+ * This function returns a pointer to cfi_ep_t object with the addr address.
+ */
+static inline struct cfi_ep *get_cfi_ep_by_addr(struct cfiobject *cfi,
+						uint8_t addr)
+{
+	struct cfi_ep *pcfiep;
+	dwc_list_link_t *tmp;
+
+	DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+		pcfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+
+		if (pcfiep->ep->desc->bEndpointAddress == addr) {
+			return pcfiep;
+		}
+	}
+
+	return NULL;
+}
+
+/**
+ * This function returns a pointer to cfi_ep_t object that matches
+ * the dwc_otg_pcd_ep object.
+ */
+static inline struct cfi_ep *get_cfi_ep_by_pcd_ep(struct cfiobject *cfi,
+						  struct dwc_otg_pcd_ep *ep)
+{
+	struct cfi_ep *pcfiep = NULL;
+	dwc_list_link_t *tmp;
+
+	DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
+		pcfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
+		if (pcfiep->ep == ep) {
+			return pcfiep;
+		}
+	}
+	return NULL;
+}
+
+int cfi_setup(struct dwc_otg_pcd *pcd, struct cfi_usb_ctrlrequest *ctrl);
+
+#endif /* (__DWC_OTG_CFI_H__) */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cil.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cil.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cil.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cil.c	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,7141 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil.c $
+ * $Revision: #191 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * The Core Interface Layer provides basic services for accessing and
+ * managing the DWC_otg hardware. These services are used by both the
+ * Host Controller Driver and the Peripheral Controller Driver.
+ *
+ * The CIL manages the memory map for the core so that the HCD and PCD
+ * don't have to do this separately. It also handles basic tasks like
+ * reading/writing the registers and data FIFOs in the controller.
+ * Some of the data access functions provide encapsulation of several
+ * operations required to perform a task, such as writing multiple
+ * registers to start a transfer. Finally, the CIL performs basic
+ * services that are not specific to either the host or device modes
+ * of operation. These services include management of the OTG Host
+ * Negotiation Protocol (HNP) and Session Request Protocol (SRP). A
+ * Diagnostic API is also provided to allow testing of the controller
+ * hardware.
+ *
+ * The Core Interface Layer has the following requirements:
+ * - Provides basic controller operations.
+ * - Minimal use of OS services.
+ * - The OS services used will be abstracted by using inline functions
+ *	 or macros.
+ *
+ */
+
+#include "dwc_os.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+
+static int dwc_otg_setup_params(dwc_otg_core_if_t * core_if);
+
+/**
+ * This function is called to initialize the DWC_otg CSR data
+ * structures. The register addresses in the device and host
+ * structures are initialized from the base address supplied by the
+ * caller. The calling function must make the OS calls to get the
+ * base address of the DWC_otg controller registers. The core_params
+ * argument holds the parameters that specify how the core should be
+ * configured.
+ *
+ * @param reg_base_addr Base address of DWC_otg core registers
+ *
+ */
+dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t * reg_base_addr)
+{
+	dwc_otg_core_if_t *core_if = 0;
+	dwc_otg_dev_if_t *dev_if = 0;
+	dwc_otg_host_if_t *host_if = 0;
+	uint8_t *reg_base = (uint8_t *) reg_base_addr;
+	int i = 0;
+
+	DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, reg_base_addr);
+
+	core_if = DWC_ALLOC(sizeof(dwc_otg_core_if_t));
+
+	if (core_if == NULL) {
+		DWC_DEBUGPL(DBG_CIL,
+			    "Allocation of dwc_otg_core_if_t failed\n");
+		return 0;
+	}
+	core_if->core_global_regs = (dwc_otg_core_global_regs_t *) reg_base;
+
+	/*
+	 * Allocate the Device Mode structures.
+	 */
+	dev_if = DWC_ALLOC(sizeof(dwc_otg_dev_if_t));
+
+	if (dev_if == NULL) {
+		DWC_DEBUGPL(DBG_CIL, "Allocation of dwc_otg_dev_if_t failed\n");
+		DWC_FREE(core_if);
+		return 0;
+	}
+
+	dev_if->dev_global_regs =
+	    (dwc_otg_device_global_regs_t *) (reg_base +
+					      DWC_DEV_GLOBAL_REG_OFFSET);
+
+	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+		dev_if->in_ep_regs[i] = (dwc_otg_dev_in_ep_regs_t *)
+		    (reg_base + DWC_DEV_IN_EP_REG_OFFSET +
+		     (i * DWC_EP_REG_OFFSET));
+
+		dev_if->out_ep_regs[i] = (dwc_otg_dev_out_ep_regs_t *)
+		    (reg_base + DWC_DEV_OUT_EP_REG_OFFSET +
+		     (i * DWC_EP_REG_OFFSET));
+		DWC_DEBUGPL(DBG_CILV, "in_ep_regs[%d]->diepctl=%p\n",
+			    i, &dev_if->in_ep_regs[i]->diepctl);
+		DWC_DEBUGPL(DBG_CILV, "out_ep_regs[%d]->doepctl=%p\n",
+			    i, &dev_if->out_ep_regs[i]->doepctl);
+	}
+
+	dev_if->speed = 0;	// unknown
+
+	core_if->dev_if = dev_if;
+
+	/*
+	 * Allocate the Host Mode structures.
+	 */
+	host_if = DWC_ALLOC(sizeof(dwc_otg_host_if_t));
+
+	if (host_if == NULL) {
+		DWC_DEBUGPL(DBG_CIL,
+			    "Allocation of dwc_otg_host_if_t failed\n");
+		DWC_FREE(dev_if);
+		DWC_FREE(core_if);
+		return 0;
+	}
+
+	host_if->host_global_regs = (dwc_otg_host_global_regs_t *)
+	    (reg_base + DWC_OTG_HOST_GLOBAL_REG_OFFSET);
+
+	host_if->hprt0 =
+	    (uint32_t *) (reg_base + DWC_OTG_HOST_PORT_REGS_OFFSET);
+
+	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+		host_if->hc_regs[i] = (dwc_otg_hc_regs_t *)
+		    (reg_base + DWC_OTG_HOST_CHAN_REGS_OFFSET +
+		     (i * DWC_OTG_CHAN_REGS_OFFSET));
+		DWC_DEBUGPL(DBG_CILV, "hc_reg[%d]->hcchar=%p\n",
+			    i, &host_if->hc_regs[i]->hcchar);
+	}
+
+	host_if->num_host_channels = MAX_EPS_CHANNELS;
+	core_if->host_if = host_if;
+
+	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+		core_if->data_fifo[i] =
+		    (uint32_t *) (reg_base + DWC_OTG_DATA_FIFO_OFFSET +
+				  (i * DWC_OTG_DATA_FIFO_SIZE));
+		DWC_DEBUGPL(DBG_CILV, "data_fifo[%d]=0x%08lx\n",
+			    i, (unsigned long)core_if->data_fifo[i]);
+	}
+
+	core_if->pcgcctl = (uint32_t *) (reg_base + DWC_OTG_PCGCCTL_OFFSET);
+
+	/* Initiate lx_state to L3 disconnected state */
+	core_if->lx_state = DWC_OTG_L3;
+	/*
+	 * Store the contents of the hardware configuration registers here for
+	 * easy access later.
+	 */
+	core_if->hwcfg1.d32 =
+	    DWC_READ_REG32(&core_if->core_global_regs->ghwcfg1);
+	core_if->hwcfg2.d32 =
+	    DWC_READ_REG32(&core_if->core_global_regs->ghwcfg2);
+	core_if->hwcfg3.d32 =
+	    DWC_READ_REG32(&core_if->core_global_regs->ghwcfg3);
+	core_if->hwcfg4.d32 =
+	    DWC_READ_REG32(&core_if->core_global_regs->ghwcfg4);
+
+	/* Force host mode to get HPTXFSIZ exact power on value */
+	{
+		gusbcfg_data_t gusbcfg = {.d32 = 0 };
+		gusbcfg.d32 =  DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+		gusbcfg.b.force_host_mode = 1;
+		DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gusbcfg.d32);
+		dwc_mdelay(100);
+		core_if->hptxfsiz.d32 =
+		DWC_READ_REG32(&core_if->core_global_regs->hptxfsiz);
+		gusbcfg.d32 =  DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+		gusbcfg.b.force_host_mode = 0;
+		DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gusbcfg.d32);
+		dwc_mdelay(100);
+	}
+
+	DWC_DEBUGPL(DBG_CILV, "hwcfg1=%08x\n", core_if->hwcfg1.d32);
+	DWC_DEBUGPL(DBG_CILV, "hwcfg2=%08x\n", core_if->hwcfg2.d32);
+	DWC_DEBUGPL(DBG_CILV, "hwcfg3=%08x\n", core_if->hwcfg3.d32);
+	DWC_DEBUGPL(DBG_CILV, "hwcfg4=%08x\n", core_if->hwcfg4.d32);
+
+	core_if->hcfg.d32 =
+	    DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+	core_if->dcfg.d32 =
+	    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+
+	DWC_DEBUGPL(DBG_CILV, "hcfg=%08x\n", core_if->hcfg.d32);
+	DWC_DEBUGPL(DBG_CILV, "dcfg=%08x\n", core_if->dcfg.d32);
+
+	DWC_DEBUGPL(DBG_CILV, "op_mode=%0x\n", core_if->hwcfg2.b.op_mode);
+	DWC_DEBUGPL(DBG_CILV, "arch=%0x\n", core_if->hwcfg2.b.architecture);
+	DWC_DEBUGPL(DBG_CILV, "num_dev_ep=%d\n", core_if->hwcfg2.b.num_dev_ep);
+	DWC_DEBUGPL(DBG_CILV, "num_host_chan=%d\n",
+		    core_if->hwcfg2.b.num_host_chan);
+	DWC_DEBUGPL(DBG_CILV, "nonperio_tx_q_depth=0x%0x\n",
+		    core_if->hwcfg2.b.nonperio_tx_q_depth);
+	DWC_DEBUGPL(DBG_CILV, "host_perio_tx_q_depth=0x%0x\n",
+		    core_if->hwcfg2.b.host_perio_tx_q_depth);
+	DWC_DEBUGPL(DBG_CILV, "dev_token_q_depth=0x%0x\n",
+		    core_if->hwcfg2.b.dev_token_q_depth);
+
+	DWC_DEBUGPL(DBG_CILV, "Total FIFO SZ=%d\n",
+		    core_if->hwcfg3.b.dfifo_depth);
+	DWC_DEBUGPL(DBG_CILV, "xfer_size_cntr_width=%0x\n",
+		    core_if->hwcfg3.b.xfer_size_cntr_width);
+
+	/*
+	 * Set the SRP sucess bit for FS-I2c
+	 */
+	core_if->srp_success = 0;
+	core_if->srp_timer_started = 0;
+
+	/*
+	 * Create new workqueue and init works
+	 */
+	core_if->wq_otg = DWC_WORKQ_ALLOC("dwc_otg");
+	if (core_if->wq_otg == 0) {
+		DWC_WARN("DWC_WORKQ_ALLOC failed\n");
+		DWC_FREE(host_if);
+		DWC_FREE(dev_if);
+		DWC_FREE(core_if);
+		return 0;
+	}
+
+	core_if->snpsid = DWC_READ_REG32(&core_if->core_global_regs->gsnpsid);
+
+	DWC_PRINTF("Core Release: %x.%x%x%x\n",
+		   (core_if->snpsid >> 12 & 0xF),
+		   (core_if->snpsid >> 8 & 0xF),
+		   (core_if->snpsid >> 4 & 0xF), (core_if->snpsid & 0xF));
+
+	core_if->wkp_timer = DWC_TIMER_ALLOC("Wake Up Timer",
+					     w_wakeup_detected, core_if);
+	if (core_if->wkp_timer == 0) {
+		DWC_WARN("DWC_TIMER_ALLOC failed\n");
+		DWC_FREE(host_if);
+		DWC_FREE(dev_if);
+		DWC_WORKQ_FREE(core_if->wq_otg);
+		DWC_FREE(core_if);
+		return 0;
+	}
+
+	if (dwc_otg_setup_params(core_if)) {
+		DWC_WARN("Error while setting core params\n");
+	}
+
+	core_if->hibernation_suspend = 0;
+
+	/** ADP initialization */
+	dwc_otg_adp_init(core_if);
+
+	return core_if;
+}
+
+/**
+ * This function frees the structures allocated by dwc_otg_cil_init().
+ *
+ * @param core_if The core interface pointer returned from
+ * 		  dwc_otg_cil_init().
+ *
+ */
+void dwc_otg_cil_remove(dwc_otg_core_if_t * core_if)
+{
+	dctl_data_t dctl = {.d32 = 0 };
+	DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, core_if);
+
+	/* Disable all interrupts */
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, 1, 0);
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, 0);
+
+	dctl.b.sftdiscon = 1;
+	if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0,
+				 dctl.d32);
+	}
+
+	if (core_if->wq_otg) {
+		DWC_WORKQ_WAIT_WORK_DONE(core_if->wq_otg, 500);
+		DWC_WORKQ_FREE(core_if->wq_otg);
+	}
+	if (core_if->dev_if) {
+		DWC_FREE(core_if->dev_if);
+	}
+	if (core_if->host_if) {
+		DWC_FREE(core_if->host_if);
+	}
+
+	/** Remove ADP Stuff  */
+	dwc_otg_adp_remove(core_if);
+	if (core_if->core_params) {
+		DWC_FREE(core_if->core_params);
+	}
+	if (core_if->wkp_timer) {
+		DWC_TIMER_FREE(core_if->wkp_timer);
+	}
+	if (core_if->srp_timer) {
+		DWC_TIMER_FREE(core_if->srp_timer);
+	}
+	DWC_FREE(core_if);
+}
+
+/**
+ * This function enables the controller's Global Interrupt in the AHB Config
+ * register.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_enable_global_interrupts(dwc_otg_core_if_t * core_if)
+{
+	gahbcfg_data_t ahbcfg = {.d32 = 0 };
+	ahbcfg.b.glblintrmsk = 1;	/* Enable interrupts */
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, 0, ahbcfg.d32);
+}
+
+/**
+ * This function disables the controller's Global Interrupt in the AHB Config
+ * register.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_disable_global_interrupts(dwc_otg_core_if_t * core_if)
+{
+	gahbcfg_data_t ahbcfg = {.d32 = 0 };
+	ahbcfg.b.glblintrmsk = 1;	/* Disable interrupts */
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0);
+}
+
+/**
+ * This function initializes the commmon interrupts, used in both
+ * device and host modes.
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ *
+ */
+static void dwc_otg_enable_common_interrupts(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	/* Clear any pending OTG Interrupts */
+	DWC_WRITE_REG32(&global_regs->gotgint, 0xFFFFFFFF);
+
+	/* Clear any pending interrupts */
+	DWC_WRITE_REG32(&global_regs->gintsts, 0xFFFFFFFF);
+
+	/*
+	 * Enable the interrupts in the GINTMSK.
+	 */
+	intr_mask.b.modemismatch = 1;
+	intr_mask.b.otgintr = 1;
+
+	if (!core_if->dma_enable) {
+		intr_mask.b.rxstsqlvl = 1;
+	}
+
+	intr_mask.b.conidstschng = 1;
+	intr_mask.b.wkupintr = 1;
+	intr_mask.b.disconnect = 0;
+	intr_mask.b.usbsuspend = 1;
+	intr_mask.b.sessreqintr = 1;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	if (core_if->core_params->lpm_enable) {
+		intr_mask.b.lpmtranrcvd = 1;
+	}
+#endif
+	DWC_WRITE_REG32(&global_regs->gintmsk, intr_mask.d32);
+}
+
+/*
+ * The restore operation is modified to support Synopsys Emulated Powerdown and
+ * Hibernation. This function is for exiting from Device mode hibernation by
+ * Host Initiated Resume/Reset and Device Initiated Remote-Wakeup.
+ * @param core_if Programming view of DWC_otg controller.
+ * @param rem_wakeup - indicates whether resume is initiated by Device or Host.
+ * @param reset - indicates whether resume is initiated by Reset.
+ */
+int dwc_otg_device_hibernation_restore(dwc_otg_core_if_t * core_if,
+				       int rem_wakeup, int reset)
+{
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+	pcgcctl_data_t pcgcctl = {.d32 = 0 };
+	dctl_data_t dctl = {.d32 = 0 };
+
+	int timeout = 2000;
+
+	if (!core_if->hibernation_suspend) {
+		DWC_PRINTF("Already exited from Hibernation\n");
+		return 1;
+	}
+
+	DWC_DEBUGPL(DBG_PCD, "%s called\n", __FUNCTION__);
+	/* Switch-on voltage to the core */
+	gpwrdn.b.pwrdnswtch = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Reset core */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Assert Restore signal */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.restore = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+	dwc_udelay(10);
+
+	/* Disable power clamps */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnclmp = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	if (rem_wakeup) {
+		dwc_udelay(70);
+	}
+
+	/* Deassert Reset core */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+	dwc_udelay(10);
+
+	/* Disable PMU interrupt */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuintsel = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	/* Mask interrupts from gpwrdn */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.connect_det_msk = 1;
+	gpwrdn.b.srp_det_msk = 1;
+	gpwrdn.b.disconn_det_msk = 1;
+	gpwrdn.b.rst_det_msk = 1;
+	gpwrdn.b.lnstchng_msk = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	/* Indicates that we are going out from hibernation */
+	core_if->hibernation_suspend = 0;
+
+	/*
+	 * Set Restore Essential Regs bit in PCGCCTL register, restore_mode = 1
+	 * indicates restore from remote_wakeup
+	 */
+	restore_essential_regs(core_if, rem_wakeup, 0);
+
+	/*
+	 * Wait a little for seeing new value of variable hibernation_suspend if
+	 * Restore done interrupt received before polling
+	 */
+	dwc_udelay(10);
+
+	if (core_if->hibernation_suspend == 0) {
+		/*
+		 * Wait For Restore_done Interrupt. This mechanism of polling the
+		 * interrupt is introduced to avoid any possible race conditions
+		 */
+		do {
+			gintsts_data_t gintsts;
+			gintsts.d32 =
+			    DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+			if (gintsts.b.restoredone) {
+				gintsts.d32 = 0;
+				gintsts.b.restoredone = 1;
+				DWC_WRITE_REG32(&core_if->core_global_regs->
+						gintsts, gintsts.d32);
+				DWC_PRINTF("Restore Done Interrupt seen\n");
+				break;
+			}
+			dwc_udelay(10);
+		} while (--timeout);
+		if (!timeout) {
+			DWC_PRINTF("Restore Done interrupt wasn't generated here\n");
+		}
+	}
+	/* Clear all pending interupts */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+	/* De-assert Restore */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.restore = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	if (!rem_wakeup) {
+		pcgcctl.d32 = 0;
+		pcgcctl.b.rstpdwnmodule = 1;
+		DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+	}
+
+	/* Restore GUSBCFG and DCFG */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg,
+			core_if->gr_backup->gusbcfg_local);
+	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg,
+			core_if->dr_backup->dcfg);
+
+	/* De-assert Wakeup Logic */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuactv = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	if (!rem_wakeup) {
+		/* Set Device programming done bit */
+		dctl.b.pwronprgdone = 1;
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+	} else {
+		/* Start Remote Wakeup Signaling */
+		dctl.d32 = core_if->dr_backup->dctl;
+		dctl.b.rmtwkupsig = 1;
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
+	}
+
+	dwc_mdelay(2);
+	/* Clear all pending interupts */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+	/* Restore global registers */
+	dwc_otg_restore_global_regs(core_if);
+	/* Restore device global registers */
+	dwc_otg_restore_dev_regs(core_if, rem_wakeup);
+
+	if (rem_wakeup) {
+		dwc_mdelay(7);
+		dctl.d32 = 0;
+		dctl.b.rmtwkupsig = 1;
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, 0);
+	}
+
+	core_if->hibernation_suspend = 0;
+	/* The core will be in ON STATE */
+	core_if->lx_state = DWC_OTG_L0;
+	DWC_PRINTF("Hibernation recovery completes here\n");
+
+	return 1;
+}
+
+/*
+ * The restore operation is modified to support Synopsys Emulated Powerdown and
+ * Hibernation. This function is for exiting from Host mode hibernation by
+ * Host Initiated Resume/Reset and Device Initiated Remote-Wakeup.
+ * @param core_if Programming view of DWC_otg controller.
+ * @param rem_wakeup - indicates whether resume is initiated by Device or Host.
+ * @param reset - indicates whether resume is initiated by Reset.
+ */
+int dwc_otg_host_hibernation_restore(dwc_otg_core_if_t * core_if,
+				     int rem_wakeup, int reset)
+{
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+	hprt0_data_t hprt0 = {.d32 = 0 };
+
+	int timeout = 2000;
+
+	DWC_DEBUGPL(DBG_HCD, "%s called\n", __FUNCTION__);
+	/* Switch-on voltage to the core */
+	gpwrdn.b.pwrdnswtch = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Reset core */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Assert Restore signal */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.restore = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+	dwc_udelay(10);
+
+	/* Disable power clamps */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnclmp = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	if (!rem_wakeup) {
+		dwc_udelay(50);
+	}
+
+	/* Deassert Reset core */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+	dwc_udelay(10);
+
+	/* Disable PMU interrupt */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuintsel = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	gpwrdn.d32 = 0;
+	gpwrdn.b.connect_det_msk = 1;
+	gpwrdn.b.srp_det_msk = 1;
+	gpwrdn.b.disconn_det_msk = 1;
+	gpwrdn.b.rst_det_msk = 1;
+	gpwrdn.b.lnstchng_msk = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	/* Indicates that we are going out from hibernation */
+	core_if->hibernation_suspend = 0;
+
+	/* Set Restore Essential Regs bit in PCGCCTL register */
+	restore_essential_regs(core_if, rem_wakeup, 1);
+
+	/* Wait a little for seeing new value of variable hibernation_suspend if
+	 * Restore done interrupt received before polling */
+	dwc_udelay(10);
+
+	if (core_if->hibernation_suspend == 0) {
+		/* Wait For Restore_done Interrupt. This mechanism of polling the
+		 * interrupt is introduced to avoid any possible race conditions
+		 */
+		do {
+			gintsts_data_t gintsts;
+			gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+			if (gintsts.b.restoredone) {
+				gintsts.d32 = 0;
+				gintsts.b.restoredone = 1;
+			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+				DWC_DEBUGPL(DBG_HCD,"Restore Done Interrupt seen\n");
+				break;
+			}
+			dwc_udelay(10);
+		} while (--timeout);
+		if (!timeout) {
+			DWC_WARN("Restore Done interrupt wasn't generated\n");
+		}
+	}
+
+	/* Set the flag's value to 0 again after receiving restore done interrupt */
+	core_if->hibernation_suspend = 0;
+
+	/* This step is not described in functional spec but if not wait for this
+	 * delay, mismatch interrupts occurred because just after restore core is
+	 * in Device mode(gintsts.curmode == 0) */
+	dwc_mdelay(100);
+
+	/* Clear all pending interrupts */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+	/* De-assert Restore */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.restore = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Restore GUSBCFG and HCFG */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg,
+			core_if->gr_backup->gusbcfg_local);
+	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg,
+			core_if->hr_backup->hcfg_local);
+
+	/* De-assert Wakeup Logic */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuactv = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Start the Resume operation by programming HPRT0 */
+	hprt0.d32 = core_if->hr_backup->hprt0_local;
+	hprt0.b.prtpwr = 1;
+	hprt0.b.prtena = 0;
+	hprt0.b.prtsusp = 0;
+	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+	DWC_PRINTF("Resume Starts Now\n");
+	if (!reset) {		// Indicates it is Resume Operation
+		hprt0.d32 = core_if->hr_backup->hprt0_local;
+		hprt0.b.prtres = 1;
+		hprt0.b.prtpwr = 1;
+		hprt0.b.prtena = 0;
+		hprt0.b.prtsusp = 0;
+		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+		if (!rem_wakeup)
+			hprt0.b.prtres = 0;
+		/* Wait for Resume time and then program HPRT again */
+		dwc_mdelay(100);
+		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+	} else {		// Indicates it is Reset Operation
+		hprt0.d32 = core_if->hr_backup->hprt0_local;
+		hprt0.b.prtrst = 1;
+		hprt0.b.prtpwr = 1;
+		hprt0.b.prtena = 0;
+		hprt0.b.prtsusp = 0;
+		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+		/* Wait for Reset time and then program HPRT again */
+		dwc_mdelay(60);
+		hprt0.b.prtrst = 0;
+		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+	}
+	/* Clear all interrupt status */
+	hprt0.d32 = dwc_otg_read_hprt0(core_if);
+	hprt0.b.prtconndet = 1;
+	hprt0.b.prtenchng = 1;
+	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+	/* Clear all pending interupts */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+	/* Restore global registers */
+	dwc_otg_restore_global_regs(core_if);
+	/* Restore host global registers */
+	dwc_otg_restore_host_regs(core_if, reset);
+
+	/* The core will be in ON STATE */
+	core_if->lx_state = DWC_OTG_L0;
+	DWC_PRINTF("Hibernation recovery is complete here\n");
+	return 0;
+}
+
+/** Saves some register values into system memory. */
+int dwc_otg_save_global_regs(dwc_otg_core_if_t * core_if)
+{
+	struct dwc_otg_global_regs_backup *gr;
+	int i;
+
+	gr = core_if->gr_backup;
+	if (!gr) {
+		gr = DWC_ALLOC(sizeof(*gr));
+		if (!gr) {
+			return -DWC_E_NO_MEMORY;
+		}
+		core_if->gr_backup = gr;
+	}
+
+	gr->gotgctl_local = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+	gr->gintmsk_local = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+	gr->gahbcfg_local = DWC_READ_REG32(&core_if->core_global_regs->gahbcfg);
+	gr->gusbcfg_local = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+	gr->grxfsiz_local = DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+	gr->gnptxfsiz_local = DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz);
+	gr->hptxfsiz_local = DWC_READ_REG32(&core_if->core_global_regs->hptxfsiz);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	gr->glpmcfg_local = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+#endif
+	gr->gi2cctl_local = DWC_READ_REG32(&core_if->core_global_regs->gi2cctl);
+	gr->pcgcctl_local = DWC_READ_REG32(core_if->pcgcctl);
+	gr->gdfifocfg_local =
+	    DWC_READ_REG32(&core_if->core_global_regs->gdfifocfg);
+	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+		gr->dtxfsiz_local[i] =
+		    DWC_READ_REG32(&(core_if->core_global_regs->dtxfsiz[i]));
+	}
+
+	DWC_DEBUGPL(DBG_ANY, "===========Backing Global registers==========\n");
+	DWC_DEBUGPL(DBG_ANY, "Backed up gotgctl   = %08x\n", gr->gotgctl_local);
+	DWC_DEBUGPL(DBG_ANY, "Backed up gintmsk   = %08x\n", gr->gintmsk_local);
+	DWC_DEBUGPL(DBG_ANY, "Backed up gahbcfg   = %08x\n", gr->gahbcfg_local);
+	DWC_DEBUGPL(DBG_ANY, "Backed up gusbcfg   = %08x\n", gr->gusbcfg_local);
+	DWC_DEBUGPL(DBG_ANY, "Backed up grxfsiz   = %08x\n", gr->grxfsiz_local);
+	DWC_DEBUGPL(DBG_ANY, "Backed up gnptxfsiz = %08x\n",
+		    gr->gnptxfsiz_local);
+	DWC_DEBUGPL(DBG_ANY, "Backed up hptxfsiz  = %08x\n",
+		    gr->hptxfsiz_local);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	DWC_DEBUGPL(DBG_ANY, "Backed up glpmcfg   = %08x\n", gr->glpmcfg_local);
+#endif
+	DWC_DEBUGPL(DBG_ANY, "Backed up gi2cctl   = %08x\n", gr->gi2cctl_local);
+	DWC_DEBUGPL(DBG_ANY, "Backed up pcgcctl   = %08x\n", gr->pcgcctl_local);
+	DWC_DEBUGPL(DBG_ANY,"Backed up gdfifocfg   = %08x\n",gr->gdfifocfg_local);
+
+	return 0;
+}
+
+/** Saves GINTMSK register before setting the msk bits. */
+int dwc_otg_save_gintmsk_reg(dwc_otg_core_if_t * core_if)
+{
+	struct dwc_otg_global_regs_backup *gr;
+
+	gr = core_if->gr_backup;
+	if (!gr) {
+		gr = DWC_ALLOC(sizeof(*gr));
+		if (!gr) {
+			return -DWC_E_NO_MEMORY;
+		}
+		core_if->gr_backup = gr;
+	}
+
+	gr->gintmsk_local = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+
+	DWC_DEBUGPL(DBG_ANY,"=============Backing GINTMSK registers============\n");
+	DWC_DEBUGPL(DBG_ANY, "Backed up gintmsk   = %08x\n", gr->gintmsk_local);
+
+	return 0;
+}
+
+int dwc_otg_save_dev_regs(dwc_otg_core_if_t * core_if)
+{
+	struct dwc_otg_dev_regs_backup *dr;
+	int i;
+
+	dr = core_if->dr_backup;
+	if (!dr) {
+		dr = DWC_ALLOC(sizeof(*dr));
+		if (!dr) {
+			return -DWC_E_NO_MEMORY;
+		}
+		core_if->dr_backup = dr;
+	}
+
+	dr->dcfg = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+	dr->dctl = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+	dr->daintmsk =
+	    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daintmsk);
+	dr->diepmsk =
+	    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->diepmsk);
+	dr->doepmsk =
+	    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->doepmsk);
+
+	for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+		dr->diepctl[i] =
+		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->diepctl);
+		dr->dieptsiz[i] =
+		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->dieptsiz);
+		dr->diepdma[i] =
+		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->diepdma);
+	}
+
+	DWC_DEBUGPL(DBG_ANY,
+		    "=============Backing Host registers==============\n");
+	DWC_DEBUGPL(DBG_ANY, "Backed up dcfg            = %08x\n", dr->dcfg);
+	DWC_DEBUGPL(DBG_ANY, "Backed up dctl        = %08x\n", dr->dctl);
+	DWC_DEBUGPL(DBG_ANY, "Backed up daintmsk            = %08x\n",
+		    dr->daintmsk);
+	DWC_DEBUGPL(DBG_ANY, "Backed up diepmsk        = %08x\n", dr->diepmsk);
+	DWC_DEBUGPL(DBG_ANY, "Backed up doepmsk        = %08x\n", dr->doepmsk);
+	for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+		DWC_DEBUGPL(DBG_ANY, "Backed up diepctl[%d]        = %08x\n", i,
+			    dr->diepctl[i]);
+		DWC_DEBUGPL(DBG_ANY, "Backed up dieptsiz[%d]        = %08x\n",
+			    i, dr->dieptsiz[i]);
+		DWC_DEBUGPL(DBG_ANY, "Backed up diepdma[%d]        = %08x\n", i,
+			    dr->diepdma[i]);
+	}
+
+	return 0;
+}
+
+int dwc_otg_save_host_regs(dwc_otg_core_if_t * core_if)
+{
+	struct dwc_otg_host_regs_backup *hr;
+	int i;
+
+	hr = core_if->hr_backup;
+	if (!hr) {
+		hr = DWC_ALLOC(sizeof(*hr));
+		if (!hr) {
+			return -DWC_E_NO_MEMORY;
+		}
+		core_if->hr_backup = hr;
+	}
+
+	hr->hcfg_local =
+	    DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+	hr->haintmsk_local =
+	    DWC_READ_REG32(&core_if->host_if->host_global_regs->haintmsk);
+	for (i = 0; i < dwc_otg_get_param_host_channels(core_if); ++i) {
+		hr->hcintmsk_local[i] =
+		    DWC_READ_REG32(&core_if->host_if->hc_regs[i]->hcintmsk);
+	}
+	hr->hprt0_local = DWC_READ_REG32(core_if->host_if->hprt0);
+	hr->hfir_local =
+	    DWC_READ_REG32(&core_if->host_if->host_global_regs->hfir);
+
+	DWC_DEBUGPL(DBG_ANY,
+		    "=============Backing Host registers===============\n");
+	DWC_DEBUGPL(DBG_ANY, "Backed up hcfg		= %08x\n",
+		    hr->hcfg_local);
+	DWC_DEBUGPL(DBG_ANY, "Backed up haintmsk = %08x\n", hr->haintmsk_local);
+	for (i = 0; i < dwc_otg_get_param_host_channels(core_if); ++i) {
+		DWC_DEBUGPL(DBG_ANY, "Backed up hcintmsk[%02d]=%08x\n", i,
+			    hr->hcintmsk_local[i]);
+	}
+	DWC_DEBUGPL(DBG_ANY, "Backed up hprt0           = %08x\n",
+		    hr->hprt0_local);
+	DWC_DEBUGPL(DBG_ANY, "Backed up hfir           = %08x\n",
+		    hr->hfir_local);
+
+	return 0;
+}
+
+int dwc_otg_restore_global_regs(dwc_otg_core_if_t *core_if)
+{
+	struct dwc_otg_global_regs_backup *gr;
+	int i;
+
+	gr = core_if->gr_backup;
+	if (!gr) {
+		return -DWC_E_INVALID;
+	}
+
+	DWC_WRITE_REG32(&core_if->core_global_regs->gotgctl, gr->gotgctl_local);
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gr->gintmsk_local);
+	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gr->gusbcfg_local);
+	DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg, gr->gahbcfg_local);
+	DWC_WRITE_REG32(&core_if->core_global_regs->grxfsiz, gr->grxfsiz_local);
+	DWC_WRITE_REG32(&core_if->core_global_regs->gnptxfsiz,
+			gr->gnptxfsiz_local);
+	DWC_WRITE_REG32(&core_if->core_global_regs->hptxfsiz,
+			gr->hptxfsiz_local);
+	DWC_WRITE_REG32(&core_if->core_global_regs->gdfifocfg,
+			gr->gdfifocfg_local);
+	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+		DWC_WRITE_REG32(&core_if->core_global_regs->dtxfsiz[i],
+				gr->dtxfsiz_local[i]);
+	}
+
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+	DWC_WRITE_REG32(core_if->host_if->hprt0, 0x0000100A);
+	DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg,
+			(gr->gahbcfg_local));
+	return 0;
+}
+
+int dwc_otg_restore_dev_regs(dwc_otg_core_if_t * core_if, int rem_wakeup)
+{
+	struct dwc_otg_dev_regs_backup *dr;
+	int i;
+
+	dr = core_if->dr_backup;
+
+	if (!dr) {
+		return -DWC_E_INVALID;
+	}
+
+	if (!rem_wakeup) {
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
+				dr->dctl);
+	}
+
+	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->daintmsk, dr->daintmsk);
+	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->diepmsk, dr->diepmsk);
+	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->doepmsk, dr->doepmsk);
+
+	for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+		DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->dieptsiz, dr->dieptsiz[i]);
+		DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->diepdma, dr->diepdma[i]);
+		DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->diepctl, dr->diepctl[i]);
+	}
+
+	return 0;
+}
+
+int dwc_otg_restore_host_regs(dwc_otg_core_if_t * core_if, int reset)
+{
+	struct dwc_otg_host_regs_backup *hr;
+	int i;
+	hr = core_if->hr_backup;
+
+	if (!hr) {
+		return -DWC_E_INVALID;
+	}
+
+	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg, hr->hcfg_local);
+	//if (!reset)
+	//{
+	//      DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hfir, hr->hfir_local);
+	//}
+
+	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->haintmsk,
+			hr->haintmsk_local);
+	for (i = 0; i < dwc_otg_get_param_host_channels(core_if); ++i) {
+		DWC_WRITE_REG32(&core_if->host_if->hc_regs[i]->hcintmsk,
+				hr->hcintmsk_local[i]);
+	}
+
+	return 0;
+}
+
+int restore_lpm_i2c_regs(dwc_otg_core_if_t * core_if)
+{
+	struct dwc_otg_global_regs_backup *gr;
+
+	gr = core_if->gr_backup;
+
+	/* Restore values for LPM and I2C */
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, gr->glpmcfg_local);
+#endif
+	DWC_WRITE_REG32(&core_if->core_global_regs->gi2cctl, gr->gi2cctl_local);
+
+	return 0;
+}
+
+int restore_essential_regs(dwc_otg_core_if_t * core_if, int rmode, int is_host)
+{
+	struct dwc_otg_global_regs_backup *gr;
+	pcgcctl_data_t pcgcctl = {.d32 = 0 };
+	gahbcfg_data_t gahbcfg = {.d32 = 0 };
+	gusbcfg_data_t gusbcfg = {.d32 = 0 };
+	gintmsk_data_t gintmsk = {.d32 = 0 };
+
+	/* Restore LPM and I2C registers */
+	restore_lpm_i2c_regs(core_if);
+
+	/* Set PCGCCTL to 0 */
+	DWC_WRITE_REG32(core_if->pcgcctl, 0x00000000);
+
+	gr = core_if->gr_backup;
+	/* Load restore values for [31:14] bits */
+	DWC_WRITE_REG32(core_if->pcgcctl,
+			((gr->pcgcctl_local & 0xffffc000) | 0x00020000));
+
+	/* Umnask global Interrupt in GAHBCFG and restore it */
+	gahbcfg.d32 = gr->gahbcfg_local;
+	gahbcfg.b.glblintrmsk = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg, gahbcfg.d32);
+
+	/* Clear all pending interupts */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+
+	/* Unmask restore done interrupt */
+	gintmsk.b.restoredone = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32);
+
+	/* Restore GUSBCFG and HCFG/DCFG */
+	gusbcfg.d32 = core_if->gr_backup->gusbcfg_local;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gusbcfg.d32);
+
+	if (is_host) {
+		hcfg_data_t hcfg = {.d32 = 0 };
+		hcfg.d32 = core_if->hr_backup->hcfg_local;
+		DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg,
+				hcfg.d32);
+
+		/* Load restore values for [31:14] bits */
+		pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
+		pcgcctl.d32 = gr->pcgcctl_local | 0x00020000;
+
+		if (rmode)
+			pcgcctl.b.restoremode = 1;
+		DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+		dwc_udelay(10);
+
+		/* Load restore values for [31:14] bits and set EssRegRestored bit */
+		pcgcctl.d32 = gr->pcgcctl_local | 0xffffc000;
+		pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
+		pcgcctl.b.ess_reg_restored = 1;
+		if (rmode)
+			pcgcctl.b.restoremode = 1;
+		DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+	} else {
+		dcfg_data_t dcfg = {.d32 = 0 };
+		dcfg.d32 = core_if->dr_backup->dcfg;
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+		/* Load restore values for [31:14] bits */
+		pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
+		pcgcctl.d32 = gr->pcgcctl_local | 0x00020000;
+		if (!rmode) {
+			pcgcctl.d32 |= 0x208;
+		}
+		DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+		dwc_udelay(10);
+
+		/* Load restore values for [31:14] bits */
+		pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
+		pcgcctl.d32 = gr->pcgcctl_local | 0x00020000;
+		pcgcctl.b.ess_reg_restored = 1;
+		if (!rmode)
+			pcgcctl.d32 |= 0x208;
+		DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+	}
+
+	return 0;
+}
+
+/**
+ * Initializes the FSLSPClkSel field of the HCFG register depending on the PHY
+ * type.
+ */
+static void init_fslspclksel(dwc_otg_core_if_t * core_if)
+{
+	uint32_t val;
+	hcfg_data_t hcfg;
+
+	if (((core_if->hwcfg2.b.hs_phy_type == 2) &&
+	     (core_if->hwcfg2.b.fs_phy_type == 1) &&
+	     (core_if->core_params->ulpi_fs_ls)) ||
+	    (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+		/* Full speed PHY */
+		val = DWC_HCFG_48_MHZ;
+	} else {
+		/* High speed PHY running at full speed or high speed */
+		val = DWC_HCFG_30_60_MHZ;
+	}
+
+	DWC_DEBUGPL(DBG_CIL, "Initializing HCFG.FSLSPClkSel to 0x%1x\n", val);
+	hcfg.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+	hcfg.b.fslspclksel = val;
+	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+}
+
+/**
+ * Initializes the DevSpd field of the DCFG register depending on the PHY type
+ * and the enumeration speed of the device.
+ */
+static void init_devspd(dwc_otg_core_if_t * core_if)
+{
+	uint32_t val;
+	dcfg_data_t dcfg;
+
+	if (((core_if->hwcfg2.b.hs_phy_type == 2) &&
+	     (core_if->hwcfg2.b.fs_phy_type == 1) &&
+	     (core_if->core_params->ulpi_fs_ls)) ||
+	    (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+		/* Full speed PHY */
+		val = 0x3;
+	} else if (core_if->core_params->speed == DWC_SPEED_PARAM_FULL) {
+		/* High speed PHY running at full speed */
+		val = 0x1;
+	} else {
+		/* High speed PHY running at high speed */
+		val = 0x0;
+	}
+
+	DWC_DEBUGPL(DBG_CIL, "Initializing DCFG.DevSpd to 0x%1x\n", val);
+
+	dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+	dcfg.b.devspd = val;
+	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
+}
+
+/**
+ * This function calculates the number of IN EPS
+ * using GHWCFG1 and GHWCFG2 registers values
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ */
+static uint32_t calc_num_in_eps(dwc_otg_core_if_t * core_if)
+{
+	uint32_t num_in_eps = 0;
+	uint32_t num_eps = core_if->hwcfg2.b.num_dev_ep;
+	uint32_t hwcfg1 = core_if->hwcfg1.d32 >> 3;
+	uint32_t num_tx_fifos = core_if->hwcfg4.b.num_in_eps;
+	int i;
+
+	for (i = 0; i < num_eps; ++i) {
+		if (!(hwcfg1 & 0x1))
+			num_in_eps++;
+
+		hwcfg1 >>= 2;
+	}
+
+	if (core_if->hwcfg4.b.ded_fifo_en) {
+		num_in_eps =
+		    (num_in_eps > num_tx_fifos) ? num_tx_fifos : num_in_eps;
+	}
+
+	return num_in_eps;
+}
+
+/**
+ * This function calculates the number of OUT EPS
+ * using GHWCFG1 and GHWCFG2 registers values
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ */
+static uint32_t calc_num_out_eps(dwc_otg_core_if_t * core_if)
+{
+	uint32_t num_out_eps = 0;
+	uint32_t num_eps = core_if->hwcfg2.b.num_dev_ep;
+	uint32_t hwcfg1 = core_if->hwcfg1.d32 >> 2;
+	int i;
+
+	for (i = 0; i < num_eps; ++i) {
+		if (!(hwcfg1 & 0x1))
+			num_out_eps++;
+
+		hwcfg1 >>= 2;
+	}
+	return num_out_eps;
+}
+
+/**
+ * This function initializes the DWC_otg controller registers and
+ * prepares the core for device mode or host mode operation.
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ *
+ */
+void dwc_otg_core_init(dwc_otg_core_if_t * core_if)
+{
+	int i = 0;
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	gahbcfg_data_t ahbcfg = {.d32 = 0 };
+	gusbcfg_data_t usbcfg = {.d32 = 0 };
+	gi2cctl_data_t i2cctl = {.d32 = 0 };
+
+	DWC_DEBUGPL(DBG_CILV, "dwc_otg_core_init(%p) regs at %p\n",
+                    core_if, global_regs);
+
+	/* Common Initialization */
+	usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+
+	/* Program the ULPI External VBUS bit if needed */
+	usbcfg.b.ulpi_ext_vbus_drv =
+	    (core_if->core_params->phy_ulpi_ext_vbus ==
+	     DWC_PHY_ULPI_EXTERNAL_VBUS) ? 1 : 0;
+
+	/* Set external TS Dline pulsing */
+	usbcfg.b.term_sel_dl_pulse =
+	    (core_if->core_params->ts_dline == 1) ? 1 : 0;
+	DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+
+	/* Reset the Controller */
+	dwc_otg_core_reset(core_if);
+
+	core_if->adp_enable = core_if->core_params->adp_supp_enable;
+	core_if->power_down = core_if->core_params->power_down;
+	core_if->otg_sts = 0;
+
+	/* Initialize parameters from Hardware configuration registers. */
+	dev_if->num_in_eps = calc_num_in_eps(core_if);
+	dev_if->num_out_eps = calc_num_out_eps(core_if);
+
+	DWC_DEBUGPL(DBG_CIL, "num_dev_perio_in_ep=%d\n",
+		    core_if->hwcfg4.b.num_dev_perio_in_ep);
+
+	for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; i++) {
+		dev_if->perio_tx_fifo_size[i] =
+		    DWC_READ_REG32(&global_regs->dtxfsiz[i]) >> 16;
+		DWC_DEBUGPL(DBG_CIL, "Periodic Tx FIFO SZ #%d=0x%0x\n",
+			    i, dev_if->perio_tx_fifo_size[i]);
+	}
+
+	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+		dev_if->tx_fifo_size[i] =
+		    DWC_READ_REG32(&global_regs->dtxfsiz[i]) >> 16;
+		DWC_DEBUGPL(DBG_CIL, "Tx FIFO SZ #%d=0x%0x\n",
+			    i, dev_if->tx_fifo_size[i]);
+	}
+
+	core_if->total_fifo_size = core_if->hwcfg3.b.dfifo_depth;
+	core_if->rx_fifo_size = DWC_READ_REG32(&global_regs->grxfsiz);
+	core_if->nperio_tx_fifo_size =
+	    DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16;
+
+	DWC_DEBUGPL(DBG_CIL, "Total FIFO SZ=%d\n", core_if->total_fifo_size);
+	DWC_DEBUGPL(DBG_CIL, "Rx FIFO SZ=%d\n", core_if->rx_fifo_size);
+	DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO SZ=%d\n",
+		    core_if->nperio_tx_fifo_size);
+
+	/* This programming sequence needs to happen in FS mode before any other
+	 * programming occurs */
+	if ((core_if->core_params->speed == DWC_SPEED_PARAM_FULL) &&
+	    (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+		/* If FS mode with FS PHY */
+
+		/* core_init() is now called on every switch so only call the
+		 * following for the first time through. */
+		if (!core_if->phy_init_done) {
+			core_if->phy_init_done = 1;
+			DWC_DEBUGPL(DBG_CIL, "FS_PHY detected\n");
+			usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+			usbcfg.b.physel = 1;
+			DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+
+			/* Reset after a PHY select */
+			dwc_otg_core_reset(core_if);
+		}
+
+		/* Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS.      Also
+		 * do this on HNP Dev/Host mode switches (done in dev_init and
+		 * host_init). */
+		if (dwc_otg_is_host_mode(core_if)) {
+			init_fslspclksel(core_if);
+		} else {
+			init_devspd(core_if);
+		}
+
+		if (core_if->core_params->i2c_enable) {
+			DWC_DEBUGPL(DBG_CIL, "FS_PHY Enabling I2c\n");
+			/* Program GUSBCFG.OtgUtmifsSel to I2C */
+			usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+			usbcfg.b.otgutmifssel = 1;
+			DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+
+			/* Program GI2CCTL.I2CEn */
+			i2cctl.d32 = DWC_READ_REG32(&global_regs->gi2cctl);
+			i2cctl.b.i2cdevaddr = 1;
+			i2cctl.b.i2cen = 0;
+			DWC_WRITE_REG32(&global_regs->gi2cctl, i2cctl.d32);
+			i2cctl.b.i2cen = 1;
+			DWC_WRITE_REG32(&global_regs->gi2cctl, i2cctl.d32);
+		}
+
+	} /* endif speed == DWC_SPEED_PARAM_FULL */
+	else {
+		/* High speed PHY. */
+		if (!core_if->phy_init_done) {
+			core_if->phy_init_done = 1;
+			/* HS PHY parameters.  These parameters are preserved
+			 * during soft reset so only program the first time.  Do
+			 * a soft reset immediately after setting phyif.  */
+
+			if (core_if->core_params->phy_type == 2) {
+				/* ULPI interface */
+				usbcfg.b.ulpi_utmi_sel = 1;
+				usbcfg.b.phyif = 0;
+				usbcfg.b.ddrsel =
+				    core_if->core_params->phy_ulpi_ddr;
+			} else if (core_if->core_params->phy_type == 1) {
+				/* UTMI+ interface */
+				usbcfg.b.ulpi_utmi_sel = 0;
+				if (core_if->core_params->phy_utmi_width == 16) {
+					usbcfg.b.phyif = 1;
+
+				} else {
+					usbcfg.b.phyif = 0;
+				}
+			} else {
+				DWC_ERROR("FS PHY TYPE\n");
+			}
+			DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+			/* Reset after setting the PHY parameters */
+			dwc_otg_core_reset(core_if);
+		}
+	}
+
+	if ((core_if->hwcfg2.b.hs_phy_type == 2) &&
+	    (core_if->hwcfg2.b.fs_phy_type == 1) &&
+	    (core_if->core_params->ulpi_fs_ls)) {
+		DWC_DEBUGPL(DBG_CIL, "Setting ULPI FSLS\n");
+		usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+		usbcfg.b.ulpi_fsls = 1;
+		usbcfg.b.ulpi_clk_sus_m = 1;
+		DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+	} else {
+		usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+		usbcfg.b.ulpi_fsls = 0;
+		usbcfg.b.ulpi_clk_sus_m = 0;
+		DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+	}
+
+	/* Program the GAHBCFG Register. */
+	switch (core_if->hwcfg2.b.architecture) {
+
+	case DWC_SLAVE_ONLY_ARCH:
+		DWC_DEBUGPL(DBG_CIL, "Slave Only Mode\n");
+		ahbcfg.b.nptxfemplvl_txfemplvl =
+		    DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
+		ahbcfg.b.ptxfemplvl = DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
+		core_if->dma_enable = 0;
+		core_if->dma_desc_enable = 0;
+		break;
+
+	case DWC_EXT_DMA_ARCH:
+		DWC_DEBUGPL(DBG_CIL, "External DMA Mode\n");
+		{
+			uint8_t brst_sz = core_if->core_params->dma_burst_size;
+			ahbcfg.b.hburstlen = 0;
+			while (brst_sz > 1) {
+				ahbcfg.b.hburstlen++;
+				brst_sz >>= 1;
+			}
+		}
+		core_if->dma_enable = (core_if->core_params->dma_enable != 0);
+		core_if->dma_desc_enable =
+		    (core_if->core_params->dma_desc_enable != 0);
+		break;
+
+	case DWC_INT_DMA_ARCH:
+		DWC_DEBUGPL(DBG_CIL, "Internal DMA Mode\n");
+		/* Old value was DWC_GAHBCFG_INT_DMA_BURST_INCR - done for
+		  Host mode ISOC in issue fix - vahrama */
+		/* Broadcom had altered to (1<<3)|(0<<0) - WRESP=1, max 4 beats */
+		ahbcfg.b.hburstlen = (1<<3)|(0<<0);//DWC_GAHBCFG_INT_DMA_BURST_INCR4;
+		core_if->dma_enable = (core_if->core_params->dma_enable != 0);
+		core_if->dma_desc_enable =
+		    (core_if->core_params->dma_desc_enable != 0);
+		break;
+
+	}
+	if (core_if->dma_enable) {
+		if (core_if->dma_desc_enable) {
+			DWC_PRINTF("Using Descriptor DMA mode\n");
+		} else {
+			DWC_PRINTF("Using Buffer DMA mode\n");
+
+		}
+	} else {
+		DWC_PRINTF("Using Slave mode\n");
+		core_if->dma_desc_enable = 0;
+	}
+
+	if (core_if->core_params->ahb_single) {
+		ahbcfg.b.ahbsingle = 1;
+	}
+
+	ahbcfg.b.dmaenable = core_if->dma_enable;
+	DWC_WRITE_REG32(&global_regs->gahbcfg, ahbcfg.d32);
+
+	core_if->en_multiple_tx_fifo = core_if->hwcfg4.b.ded_fifo_en;
+
+	core_if->pti_enh_enable = core_if->core_params->pti_enable != 0;
+	core_if->multiproc_int_enable = core_if->core_params->mpi_enable;
+	DWC_PRINTF("Periodic Transfer Interrupt Enhancement - %s\n",
+		   ((core_if->pti_enh_enable) ? "enabled" : "disabled"));
+	DWC_PRINTF("Multiprocessor Interrupt Enhancement - %s\n",
+		   ((core_if->multiproc_int_enable) ? "enabled" : "disabled"));
+
+	/*
+	 * Program the GUSBCFG register.
+	 */
+	usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+
+	switch (core_if->hwcfg2.b.op_mode) {
+	case DWC_MODE_HNP_SRP_CAPABLE:
+		usbcfg.b.hnpcap = (core_if->core_params->otg_cap ==
+				   DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE);
+		usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+				   DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+		break;
+
+	case DWC_MODE_SRP_ONLY_CAPABLE:
+		usbcfg.b.hnpcap = 0;
+		usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+				   DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+		break;
+
+	case DWC_MODE_NO_HNP_SRP_CAPABLE:
+		usbcfg.b.hnpcap = 0;
+		usbcfg.b.srpcap = 0;
+		break;
+
+	case DWC_MODE_SRP_CAPABLE_DEVICE:
+		usbcfg.b.hnpcap = 0;
+		usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+				   DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+		break;
+
+	case DWC_MODE_NO_SRP_CAPABLE_DEVICE:
+		usbcfg.b.hnpcap = 0;
+		usbcfg.b.srpcap = 0;
+		break;
+
+	case DWC_MODE_SRP_CAPABLE_HOST:
+		usbcfg.b.hnpcap = 0;
+		usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+				   DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+		break;
+
+	case DWC_MODE_NO_SRP_CAPABLE_HOST:
+		usbcfg.b.hnpcap = 0;
+		usbcfg.b.srpcap = 0;
+		break;
+	}
+
+	DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	if (core_if->core_params->lpm_enable) {
+		glpmcfg_data_t lpmcfg = {.d32 = 0 };
+
+		/* To enable LPM support set lpm_cap_en bit */
+		lpmcfg.b.lpm_cap_en = 1;
+
+		/* Make AppL1Res ACK */
+		lpmcfg.b.appl_resp = 1;
+
+		/* Retry 3 times */
+		lpmcfg.b.retry_count = 3;
+
+		DWC_MODIFY_REG32(&core_if->core_global_regs->glpmcfg,
+				 0, lpmcfg.d32);
+
+	}
+#endif
+	if (core_if->core_params->ic_usb_cap) {
+		gusbcfg_data_t gusbcfg = {.d32 = 0 };
+		gusbcfg.b.ic_usb_cap = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gusbcfg,
+				 0, gusbcfg.d32);
+	}
+	{
+		gotgctl_data_t gotgctl = {.d32 = 0 };
+		gotgctl.b.otgver = core_if->core_params->otg_ver;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gotgctl, 0,
+				 gotgctl.d32);
+		/* Set OTG version supported */
+		core_if->otg_ver = core_if->core_params->otg_ver;
+		DWC_PRINTF("OTG VER PARAM: %d, OTG VER FLAG: %d\n",
+			   core_if->core_params->otg_ver, core_if->otg_ver);
+	}
+
+
+	/* Enable common interrupts */
+	dwc_otg_enable_common_interrupts(core_if);
+
+	/* Do device or host intialization based on mode during PCD
+	 * and HCD initialization  */
+	if (dwc_otg_is_host_mode(core_if)) {
+		DWC_DEBUGPL(DBG_ANY, "Host Mode\n");
+		core_if->op_state = A_HOST;
+	} else {
+		DWC_DEBUGPL(DBG_ANY, "Device Mode\n");
+		core_if->op_state = B_PERIPHERAL;
+#ifdef DWC_DEVICE_ONLY
+		dwc_otg_core_dev_init(core_if);
+#endif
+	}
+}
+
+/**
+ * This function enables the Device mode interrupts.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t * core_if)
+{
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+
+	DWC_DEBUGPL(DBG_CIL, "%s()\n", __func__);
+
+	/* Disable all interrupts. */
+	DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+	/* Clear any pending interrupts */
+	DWC_WRITE_REG32(&global_regs->gintsts, 0xFFFFFFFF);
+
+	/* Enable the common interrupts */
+	dwc_otg_enable_common_interrupts(core_if);
+
+	/* Enable interrupts */
+	intr_mask.b.usbreset = 1;
+	intr_mask.b.enumdone = 1;
+	/* Disable Disconnect interrupt in Device mode */
+	intr_mask.b.disconnect = 0;
+
+	if (!core_if->multiproc_int_enable) {
+		intr_mask.b.inepintr = 1;
+		intr_mask.b.outepintr = 1;
+	}
+
+	intr_mask.b.erlysuspend = 1;
+
+	if (core_if->en_multiple_tx_fifo == 0) {
+		intr_mask.b.epmismatch = 1;
+	}
+
+	//intr_mask.b.incomplisoout = 1;
+	intr_mask.b.incomplisoin = 1;
+
+/* Enable the ignore frame number for ISOC xfers - MAS */
+/* Disable to support high bandwith ISOC transfers - manukz */
+#if 0
+#ifdef DWC_UTE_PER_IO
+	if (core_if->dma_enable) {
+		if (core_if->dma_desc_enable) {
+			dctl_data_t dctl1 = {.d32 = 0 };
+			dctl1.b.ifrmnum = 1;
+			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+					 dctl, 0, dctl1.d32);
+			DWC_DEBUG("----Enabled Ignore frame number (0x%08x)",
+				  DWC_READ_REG32(&core_if->dev_if->
+						 dev_global_regs->dctl));
+		}
+	}
+#endif
+#endif
+#ifdef DWC_EN_ISOC
+	if (core_if->dma_enable) {
+		if (core_if->dma_desc_enable == 0) {
+			if (core_if->pti_enh_enable) {
+				dctl_data_t dctl = {.d32 = 0 };
+				dctl.b.ifrmnum = 1;
+				DWC_MODIFY_REG32(&core_if->
+						 dev_if->dev_global_regs->dctl,
+						 0, dctl.d32);
+			} else {
+				intr_mask.b.incomplisoin = 1;
+				intr_mask.b.incomplisoout = 1;
+			}
+		}
+	} else {
+		intr_mask.b.incomplisoin = 1;
+		intr_mask.b.incomplisoout = 1;
+	}
+#endif /* DWC_EN_ISOC */
+
+	/** @todo NGS: Should this be a module parameter? */
+#ifdef USE_PERIODIC_EP
+	intr_mask.b.isooutdrop = 1;
+	intr_mask.b.eopframe = 1;
+	intr_mask.b.incomplisoin = 1;
+	intr_mask.b.incomplisoout = 1;
+#endif
+
+	DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+
+	DWC_DEBUGPL(DBG_CIL, "%s() gintmsk=%0x\n", __func__,
+		    DWC_READ_REG32(&global_regs->gintmsk));
+}
+
+/**
+ * This function initializes the DWC_otg controller registers for
+ * device mode.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ */
+void dwc_otg_core_dev_init(dwc_otg_core_if_t * core_if)
+{
+	int i;
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	dwc_otg_core_params_t *params = core_if->core_params;
+	dcfg_data_t dcfg = {.d32 = 0 };
+	depctl_data_t diepctl = {.d32 = 0 };
+	grstctl_t resetctl = {.d32 = 0 };
+	uint32_t rx_fifo_size;
+	fifosize_data_t nptxfifosize;
+	fifosize_data_t txfifosize;
+	dthrctl_data_t dthrctl;
+	fifosize_data_t ptxfifosize;
+	uint16_t rxfsiz, nptxfsiz;
+	gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
+	hwcfg3_data_t hwcfg3 = {.d32 = 0 };
+
+	/* Restart the Phy Clock */
+	DWC_WRITE_REG32(core_if->pcgcctl, 0);
+
+	/* Device configuration register */
+	init_devspd(core_if);
+	dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+	dcfg.b.descdma = (core_if->dma_desc_enable) ? 1 : 0;
+	dcfg.b.perfrint = DWC_DCFG_FRAME_INTERVAL_80;
+	/* Enable Device OUT NAK in case of DDMA mode*/
+	if (core_if->core_params->dev_out_nak) {
+		dcfg.b.endevoutnak = 1;
+	}
+
+	if (core_if->core_params->cont_on_bna) {
+		dctl_data_t dctl = {.d32 = 0 };
+		dctl.b.encontonbna = 1;
+		DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, 0, dctl.d32);
+	}
+
+
+	DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+	/* Configure data FIFO sizes */
+	if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
+		DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n",
+			    core_if->total_fifo_size);
+		DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n",
+			    params->dev_rx_fifo_size);
+		DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n",
+			    params->dev_nperio_tx_fifo_size);
+
+		/* Rx FIFO */
+		DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n",
+			    DWC_READ_REG32(&global_regs->grxfsiz));
+
+#ifdef DWC_UTE_CFI
+		core_if->pwron_rxfsiz = DWC_READ_REG32(&global_regs->grxfsiz);
+		core_if->init_rxfsiz = params->dev_rx_fifo_size;
+#endif
+		rx_fifo_size = params->dev_rx_fifo_size;
+		DWC_WRITE_REG32(&global_regs->grxfsiz, rx_fifo_size);
+
+		DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n",
+			    DWC_READ_REG32(&global_regs->grxfsiz));
+
+		/** Set Periodic Tx FIFO Mask all bits 0 */
+		core_if->p_tx_msk = 0;
+
+		/** Set Tx FIFO Mask all bits 0 */
+		core_if->tx_msk = 0;
+
+		if (core_if->en_multiple_tx_fifo == 0) {
+			/* Non-periodic Tx FIFO */
+			DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
+				    DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+			nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
+			nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
+
+			DWC_WRITE_REG32(&global_regs->gnptxfsiz,
+					nptxfifosize.d32);
+
+			DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
+				    DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+			/**@todo NGS: Fix Periodic FIFO Sizing! */
+			/*
+			 * Periodic Tx FIFOs These FIFOs are numbered from 1 to 15.
+			 * Indexes of the FIFO size module parameters in the
+			 * dev_perio_tx_fifo_size array and the FIFO size registers in
+			 * the dptxfsiz array run from 0 to 14.
+			 */
+			/** @todo Finish debug of this */
+			ptxfifosize.b.startaddr =
+			    nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+			for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; i++) {
+				ptxfifosize.b.depth =
+				    params->dev_perio_tx_fifo_size[i];
+				DWC_DEBUGPL(DBG_CIL,
+					    "initial dtxfsiz[%d]=%08x\n", i,
+					    DWC_READ_REG32(&global_regs->dtxfsiz
+							   [i]));
+				DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
+						ptxfifosize.d32);
+				DWC_DEBUGPL(DBG_CIL, "new dtxfsiz[%d]=%08x\n",
+					    i,
+					    DWC_READ_REG32(&global_regs->dtxfsiz
+							   [i]));
+				ptxfifosize.b.startaddr += ptxfifosize.b.depth;
+			}
+		} else {
+			/*
+			 * Tx FIFOs These FIFOs are numbered from 1 to 15.
+			 * Indexes of the FIFO size module parameters in the
+			 * dev_tx_fifo_size array and the FIFO size registers in
+			 * the dtxfsiz array run from 0 to 14.
+			 */
+
+			/* Non-periodic Tx FIFO */
+			DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
+				    DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+#ifdef DWC_UTE_CFI
+			core_if->pwron_gnptxfsiz =
+			    (DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16);
+			core_if->init_gnptxfsiz =
+			    params->dev_nperio_tx_fifo_size;
+#endif
+			nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
+			nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
+
+			DWC_WRITE_REG32(&global_regs->gnptxfsiz,
+					nptxfifosize.d32);
+
+			DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
+				    DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+			txfifosize.b.startaddr =
+			    nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+
+			for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
+
+				txfifosize.b.depth =
+				    params->dev_tx_fifo_size[i];
+
+				DWC_DEBUGPL(DBG_CIL,
+					    "initial dtxfsiz[%d]=%08x\n",
+					    i,
+					    DWC_READ_REG32(&global_regs->dtxfsiz
+							   [i]));
+
+#ifdef DWC_UTE_CFI
+				core_if->pwron_txfsiz[i] =
+				    (DWC_READ_REG32
+				     (&global_regs->dtxfsiz[i]) >> 16);
+				core_if->init_txfsiz[i] =
+				    params->dev_tx_fifo_size[i];
+#endif
+				DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
+						txfifosize.d32);
+
+				DWC_DEBUGPL(DBG_CIL,
+					    "new dtxfsiz[%d]=%08x\n",
+					    i,
+					    DWC_READ_REG32(&global_regs->dtxfsiz
+							   [i]));
+
+				txfifosize.b.startaddr += txfifosize.b.depth;
+			}
+			if (core_if->snpsid <= OTG_CORE_REV_2_94a) {
+				/* Calculating DFIFOCFG for Device mode to include RxFIFO and NPTXFIFO */
+				gdfifocfg.d32 = DWC_READ_REG32(&global_regs->gdfifocfg);
+				hwcfg3.d32 = DWC_READ_REG32(&global_regs->ghwcfg3);
+				gdfifocfg.b.gdfifocfg = (DWC_READ_REG32(&global_regs->ghwcfg3) >> 16);
+				DWC_WRITE_REG32(&global_regs->gdfifocfg, gdfifocfg.d32);
+				rxfsiz = (DWC_READ_REG32(&global_regs->grxfsiz) & 0x0000ffff);
+				nptxfsiz = (DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16);
+				gdfifocfg.b.epinfobase = rxfsiz + nptxfsiz;
+				DWC_WRITE_REG32(&global_regs->gdfifocfg, gdfifocfg.d32);
+			}
+		}
+
+		/* Flush the FIFOs */
+		dwc_otg_flush_tx_fifo(core_if, 0x10);	/* all Tx FIFOs */
+		dwc_otg_flush_rx_fifo(core_if);
+
+		/* Flush the Learning Queue. */
+		resetctl.b.intknqflsh = 1;
+		DWC_WRITE_REG32(&core_if->core_global_regs->grstctl, resetctl.d32);
+
+		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable) {
+			core_if->start_predict = 0;
+			for (i = 0; i<= core_if->dev_if->num_in_eps; ++i) {
+				core_if->nextep_seq[i] = 0xff;	// 0xff - EP not active
+			}
+			core_if->nextep_seq[0] = 0;
+			core_if->first_in_nextep_seq = 0;
+			diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl);
+			diepctl.b.nextep = 0;
+			DWC_WRITE_REG32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
+
+			/* Update IN Endpoint Mismatch Count by active IN NP EP count + 1 */
+			dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+			dcfg.b.epmscnt = 2;
+			DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+			DWC_DEBUGPL(DBG_CILV,"%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
+				__func__, core_if->first_in_nextep_seq);
+			for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+				DWC_DEBUGPL(DBG_CILV, "%2d ", core_if->nextep_seq[i]);
+			}
+			DWC_DEBUGPL(DBG_CILV,"\n");
+		}
+
+		/* Clear all pending Device Interrupts */
+		/** @todo - if the condition needed to be checked
+		 *  or in any case all pending interrutps should be cleared?
+	     */
+		if (core_if->multiproc_int_enable) {
+			for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+				DWC_WRITE_REG32(&dev_if->
+						dev_global_regs->diepeachintmsk[i], 0);
+			}
+		}
+
+		for (i = 0; i < core_if->dev_if->num_out_eps; ++i) {
+			DWC_WRITE_REG32(&dev_if->
+					dev_global_regs->doepeachintmsk[i], 0);
+		}
+
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->deachint, 0xFFFFFFFF);
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->deachintmsk, 0);
+	} else {
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->diepmsk, 0);
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->doepmsk, 0);
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->daint, 0xFFFFFFFF);
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->daintmsk, 0);
+	}
+
+	for (i = 0; i <= dev_if->num_in_eps; i++) {
+		depctl_data_t depctl;
+		depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+		if (depctl.b.epena) {
+			depctl.d32 = 0;
+			depctl.b.epdis = 1;
+			depctl.b.snak = 1;
+		} else {
+			depctl.d32 = 0;
+		}
+
+		DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
+
+		DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->dieptsiz, 0);
+		DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepdma, 0);
+		DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepint, 0xFF);
+	}
+
+	for (i = 0; i <= dev_if->num_out_eps; i++) {
+		depctl_data_t depctl;
+		depctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[i]->doepctl);
+		if (depctl.b.epena) {
+			dctl_data_t dctl = {.d32 = 0 };
+			gintmsk_data_t gintsts = {.d32 = 0 };
+			doepint_data_t doepint = {.d32 = 0 };
+			dctl.b.sgoutnak = 1;
+			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+			do {
+				dwc_udelay(10);
+				gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+			} while (!gintsts.b.goutnakeff);
+			gintsts.d32 = 0;
+			gintsts.b.goutnakeff = 1;
+			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+			depctl.d32 = 0;
+			depctl.b.epdis = 1;
+			depctl.b.snak = 1;
+			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->doepctl, depctl.d32);
+			do {
+				dwc_udelay(10);
+				doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+					out_ep_regs[i]->doepint);
+			} while (!doepint.b.epdisabled);
+
+			doepint.b.epdisabled = 1;
+			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->doepint, doepint.d32);
+
+			dctl.d32 = 0;
+			dctl.b.cgoutnak = 1;
+			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+		} else {
+			depctl.d32 = 0;
+		}
+
+		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepctl, depctl.d32);
+
+		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doeptsiz, 0);
+		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepdma, 0);
+		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepint, 0xFF);
+	}
+
+	if (core_if->en_multiple_tx_fifo && core_if->dma_enable) {
+		dev_if->non_iso_tx_thr_en = params->thr_ctl & 0x1;
+		dev_if->iso_tx_thr_en = (params->thr_ctl >> 1) & 0x1;
+		dev_if->rx_thr_en = (params->thr_ctl >> 2) & 0x1;
+
+		dev_if->rx_thr_length = params->rx_thr_length;
+		dev_if->tx_thr_length = params->tx_thr_length;
+
+		dev_if->setup_desc_index = 0;
+
+		dthrctl.d32 = 0;
+		dthrctl.b.non_iso_thr_en = dev_if->non_iso_tx_thr_en;
+		dthrctl.b.iso_thr_en = dev_if->iso_tx_thr_en;
+		dthrctl.b.tx_thr_len = dev_if->tx_thr_length;
+		dthrctl.b.rx_thr_en = dev_if->rx_thr_en;
+		dthrctl.b.rx_thr_len = dev_if->rx_thr_length;
+		dthrctl.b.ahb_thr_ratio = params->ahb_thr_ratio;
+
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->dtknqr3_dthrctl,
+				dthrctl.d32);
+
+		DWC_DEBUGPL(DBG_CIL,
+			    "Non ISO Tx Thr - %d\nISO Tx Thr - %d\nRx Thr - %d\nTx Thr Len - %d\nRx Thr Len - %d\n",
+			    dthrctl.b.non_iso_thr_en, dthrctl.b.iso_thr_en,
+			    dthrctl.b.rx_thr_en, dthrctl.b.tx_thr_len,
+			    dthrctl.b.rx_thr_len);
+
+	}
+
+	dwc_otg_enable_device_interrupts(core_if);
+
+	{
+		diepmsk_data_t msk = {.d32 = 0 };
+		msk.b.txfifoundrn = 1;
+		if (core_if->multiproc_int_enable) {
+			DWC_MODIFY_REG32(&dev_if->dev_global_regs->
+					 diepeachintmsk[0], msk.d32, msk.d32);
+		} else {
+			DWC_MODIFY_REG32(&dev_if->dev_global_regs->diepmsk,
+					 msk.d32, msk.d32);
+		}
+	}
+
+	if (core_if->multiproc_int_enable) {
+		/* Set NAK on Babble */
+		dctl_data_t dctl = {.d32 = 0 };
+		dctl.b.nakonbble = 1;
+		DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, 0, dctl.d32);
+	}
+
+	if (core_if->snpsid >= OTG_CORE_REV_2_94a) {
+		dctl_data_t dctl = {.d32 = 0 };
+		dctl.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dctl);
+		dctl.b.sftdiscon = 0;
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->dctl, dctl.d32);
+	}
+}
+
+/**
+ * This function enables the Host mode interrupts.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_DEBUGPL(DBG_CIL, "%s(%p)\n", __func__, core_if);
+
+	/* Disable all interrupts. */
+	DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+	/* Clear any pending interrupts. */
+	DWC_WRITE_REG32(&global_regs->gintsts, 0xFFFFFFFF);
+
+	/* Enable the common interrupts */
+	dwc_otg_enable_common_interrupts(core_if);
+
+	/*
+	 * Enable host mode interrupts without disturbing common
+	 * interrupts.
+	 */
+
+	intr_mask.b.disconnect = 1;
+	intr_mask.b.portintr = 1;
+	intr_mask.b.hcintr = 1;
+
+	DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+}
+
+/**
+ * This function disables the Host Mode interrupts.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_DEBUGPL(DBG_CILV, "%s()\n", __func__);
+
+	/*
+	 * Disable host mode interrupts without disturbing common
+	 * interrupts.
+	 */
+	intr_mask.b.sofintr = 1;
+	intr_mask.b.portintr = 1;
+	intr_mask.b.hcintr = 1;
+	intr_mask.b.ptxfempty = 1;
+	intr_mask.b.nptxfempty = 1;
+
+	DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32, 0);
+}
+
+/**
+ * This function initializes the DWC_otg controller registers for
+ * host mode.
+ *
+ * This function flushes the Tx and Rx FIFOs and it flushes any entries in the
+ * request queues. Host channels are reset to ensure that they are ready for
+ * performing transfers.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ */
+void dwc_otg_core_host_init(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	dwc_otg_host_if_t *host_if = core_if->host_if;
+	dwc_otg_core_params_t *params = core_if->core_params;
+	hprt0_data_t hprt0 = {.d32 = 0 };
+	fifosize_data_t nptxfifosize;
+	fifosize_data_t ptxfifosize;
+	uint16_t rxfsiz, nptxfsiz, hptxfsiz;
+	gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
+	int i;
+	hcchar_data_t hcchar;
+	hcfg_data_t hcfg;
+	hfir_data_t hfir;
+	dwc_otg_hc_regs_t *hc_regs;
+	int num_channels;
+	gotgctl_data_t gotgctl = {.d32 = 0 };
+
+	DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, core_if);
+
+	/* Restart the Phy Clock */
+	DWC_WRITE_REG32(core_if->pcgcctl, 0);
+
+	/* Initialize Host Configuration Register */
+	init_fslspclksel(core_if);
+	if (core_if->core_params->speed == DWC_SPEED_PARAM_FULL) {
+		hcfg.d32 = DWC_READ_REG32(&host_if->host_global_regs->hcfg);
+		hcfg.b.fslssupp = 1;
+		DWC_WRITE_REG32(&host_if->host_global_regs->hcfg, hcfg.d32);
+
+	}
+
+	/* This bit allows dynamic reloading of the HFIR register
+	 * during runtime. This bit needs to be programmed during
+	 * initial configuration and its value must not be changed
+	 * during runtime.*/
+	if (core_if->core_params->reload_ctl == 1) {
+		hfir.d32 = DWC_READ_REG32(&host_if->host_global_regs->hfir);
+		hfir.b.hfirrldctrl = 1;
+		DWC_WRITE_REG32(&host_if->host_global_regs->hfir, hfir.d32);
+	}
+
+	if (core_if->core_params->dma_desc_enable) {
+		uint8_t op_mode = core_if->hwcfg2.b.op_mode;
+		if (!
+		    (core_if->hwcfg4.b.desc_dma
+		     && (core_if->snpsid >= OTG_CORE_REV_2_90a)
+		     && ((op_mode == DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+			 || (op_mode == DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG)
+			 || (op_mode ==
+			     DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG)
+			 || (op_mode == DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)
+			 || (op_mode ==
+			     DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST)))) {
+
+			DWC_ERROR("Host can't operate in Descriptor DMA mode.\n"
+				  "Either core version is below 2.90a or "
+				  "GHWCFG2, GHWCFG4 registers' values do not allow Descriptor DMA in host mode.\n"
+				  "To run the driver in Buffer DMA host mode set dma_desc_enable "
+				  "module parameter to 0.\n");
+			return;
+		}
+		hcfg.d32 = DWC_READ_REG32(&host_if->host_global_regs->hcfg);
+		hcfg.b.descdma = 1;
+		DWC_WRITE_REG32(&host_if->host_global_regs->hcfg, hcfg.d32);
+	}
+
+	/* Configure data FIFO sizes */
+	if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
+		DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n",
+			    core_if->total_fifo_size);
+		DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n",
+			    params->host_rx_fifo_size);
+		DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n",
+			    params->host_nperio_tx_fifo_size);
+		DWC_DEBUGPL(DBG_CIL, "P Tx FIFO Size=%d\n",
+			    params->host_perio_tx_fifo_size);
+
+		/* Rx FIFO */
+		DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n",
+			    DWC_READ_REG32(&global_regs->grxfsiz));
+		DWC_WRITE_REG32(&global_regs->grxfsiz,
+				params->host_rx_fifo_size);
+		DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n",
+			    DWC_READ_REG32(&global_regs->grxfsiz));
+
+		/* Non-periodic Tx FIFO */
+		DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
+			    DWC_READ_REG32(&global_regs->gnptxfsiz));
+		nptxfifosize.b.depth = params->host_nperio_tx_fifo_size;
+		nptxfifosize.b.startaddr = params->host_rx_fifo_size;
+		DWC_WRITE_REG32(&global_regs->gnptxfsiz, nptxfifosize.d32);
+		DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
+			    DWC_READ_REG32(&global_regs->gnptxfsiz));
+
+		/* Periodic Tx FIFO */
+		DWC_DEBUGPL(DBG_CIL, "initial hptxfsiz=%08x\n",
+			    DWC_READ_REG32(&global_regs->hptxfsiz));
+		ptxfifosize.b.depth = params->host_perio_tx_fifo_size;
+		ptxfifosize.b.startaddr =
+		    nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+		DWC_WRITE_REG32(&global_regs->hptxfsiz, ptxfifosize.d32);
+		DWC_DEBUGPL(DBG_CIL, "new hptxfsiz=%08x\n",
+			    DWC_READ_REG32(&global_regs->hptxfsiz));
+
+		if (core_if->en_multiple_tx_fifo
+		    && core_if->snpsid <= OTG_CORE_REV_2_94a) {
+			/* Global DFIFOCFG calculation for Host mode - include RxFIFO, NPTXFIFO and HPTXFIFO */
+			gdfifocfg.d32 = DWC_READ_REG32(&global_regs->gdfifocfg);
+			rxfsiz = (DWC_READ_REG32(&global_regs->grxfsiz) & 0x0000ffff);
+			nptxfsiz = (DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16);
+			hptxfsiz = (DWC_READ_REG32(&global_regs->hptxfsiz) >> 16);
+			gdfifocfg.b.epinfobase = rxfsiz + nptxfsiz + hptxfsiz;
+			DWC_WRITE_REG32(&global_regs->gdfifocfg, gdfifocfg.d32);
+		}
+	}
+
+	/* TODO - check this */
+	/* Clear Host Set HNP Enable in the OTG Control Register */
+	gotgctl.b.hstsethnpen = 1;
+	DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
+	/* Make sure the FIFOs are flushed. */
+	dwc_otg_flush_tx_fifo(core_if, 0x10 /* all TX FIFOs */ );
+	dwc_otg_flush_rx_fifo(core_if);
+
+	/* Clear Host Set HNP Enable in the OTG Control Register */
+	gotgctl.b.hstsethnpen = 1;
+	DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
+
+	if (!core_if->core_params->dma_desc_enable) {
+		/* Flush out any leftover queued requests. */
+		num_channels = core_if->core_params->host_channels;
+
+		for (i = 0; i < num_channels; i++) {
+			hc_regs = core_if->host_if->hc_regs[i];
+			hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+			hcchar.b.chen = 0;
+			hcchar.b.chdis = 1;
+			hcchar.b.epdir = 0;
+			DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+		}
+
+		/* Halt all channels to put them into a known state. */
+		for (i = 0; i < num_channels; i++) {
+			int count = 0;
+			hc_regs = core_if->host_if->hc_regs[i];
+			hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+			hcchar.b.chen = 1;
+			hcchar.b.chdis = 1;
+			hcchar.b.epdir = 0;
+			DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+			DWC_DEBUGPL(DBG_HCDV, "%s: Halt channel %d regs %p\n", __func__, i, hc_regs);
+			do {
+				hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+				if (++count > 1000) {
+					DWC_ERROR
+					    ("%s: Unable to clear halt on channel %d (timeout HCCHAR 0x%X @%p)\n",
+					     __func__, i, hcchar.d32, &hc_regs->hcchar);
+					break;
+				}
+				dwc_udelay(1);
+			} while (hcchar.b.chen);
+		}
+	}
+
+	/* Turn on the vbus power. */
+	DWC_PRINTF("Init: Port Power? op_state=%d\n", core_if->op_state);
+	if (core_if->op_state == A_HOST) {
+		hprt0.d32 = dwc_otg_read_hprt0(core_if);
+		DWC_PRINTF("Init: Power Port (%d)\n", hprt0.b.prtpwr);
+		if (hprt0.b.prtpwr == 0) {
+			hprt0.b.prtpwr = 1;
+			DWC_WRITE_REG32(host_if->hprt0, hprt0.d32);
+		}
+	}
+
+	dwc_otg_enable_host_interrupts(core_if);
+}
+
+/**
+ * Prepares a host channel for transferring packets to/from a specific
+ * endpoint. The HCCHARn register is set up with the characteristics specified
+ * in _hc. Host channel interrupts that may need to be serviced while this
+ * transfer is in progress are enabled.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ * @param hc Information needed to initialize the host channel
+ */
+void dwc_otg_hc_init(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+	hcintmsk_data_t hc_intr_mask;
+	hcchar_data_t hcchar;
+	hcsplt_data_t hcsplt;
+
+	uint8_t hc_num = hc->hc_num;
+	dwc_otg_host_if_t *host_if = core_if->host_if;
+	dwc_otg_hc_regs_t *hc_regs = host_if->hc_regs[hc_num];
+
+	/* Clear old interrupt conditions for this host channel. */
+	hc_intr_mask.d32 = 0xFFFFFFFF;
+	hc_intr_mask.b.reserved14_31 = 0;
+	DWC_WRITE_REG32(&hc_regs->hcint, hc_intr_mask.d32);
+
+	/* Enable channel interrupts required for this transfer. */
+	hc_intr_mask.d32 = 0;
+	hc_intr_mask.b.chhltd = 1;
+	if (core_if->dma_enable) {
+		/* For Descriptor DMA mode core halts the channel on AHB error. Interrupt is not required */
+		if (!core_if->dma_desc_enable)
+			hc_intr_mask.b.ahberr = 1;
+		else {
+			if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
+				hc_intr_mask.b.xfercompl = 1;
+		}
+
+		if (hc->error_state && !hc->do_split &&
+		    hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+			hc_intr_mask.b.ack = 1;
+			if (hc->ep_is_in) {
+				hc_intr_mask.b.datatglerr = 1;
+				if (hc->ep_type != DWC_OTG_EP_TYPE_INTR) {
+					hc_intr_mask.b.nak = 1;
+				}
+			}
+		}
+	} else {
+		switch (hc->ep_type) {
+		case DWC_OTG_EP_TYPE_CONTROL:
+		case DWC_OTG_EP_TYPE_BULK:
+			hc_intr_mask.b.xfercompl = 1;
+			hc_intr_mask.b.stall = 1;
+			hc_intr_mask.b.xacterr = 1;
+			hc_intr_mask.b.datatglerr = 1;
+			if (hc->ep_is_in) {
+				hc_intr_mask.b.bblerr = 1;
+			} else {
+				hc_intr_mask.b.nak = 1;
+				hc_intr_mask.b.nyet = 1;
+				if (hc->do_ping) {
+					hc_intr_mask.b.ack = 1;
+				}
+			}
+
+			if (hc->do_split) {
+				hc_intr_mask.b.nak = 1;
+				if (hc->complete_split) {
+					hc_intr_mask.b.nyet = 1;
+				} else {
+					hc_intr_mask.b.ack = 1;
+				}
+			}
+
+			if (hc->error_state) {
+				hc_intr_mask.b.ack = 1;
+			}
+			break;
+		case DWC_OTG_EP_TYPE_INTR:
+			hc_intr_mask.b.xfercompl = 1;
+			hc_intr_mask.b.nak = 1;
+			hc_intr_mask.b.stall = 1;
+			hc_intr_mask.b.xacterr = 1;
+			hc_intr_mask.b.datatglerr = 1;
+			hc_intr_mask.b.frmovrun = 1;
+
+			if (hc->ep_is_in) {
+				hc_intr_mask.b.bblerr = 1;
+			}
+			if (hc->error_state) {
+				hc_intr_mask.b.ack = 1;
+			}
+			if (hc->do_split) {
+				if (hc->complete_split) {
+					hc_intr_mask.b.nyet = 1;
+				} else {
+					hc_intr_mask.b.ack = 1;
+				}
+			}
+			break;
+		case DWC_OTG_EP_TYPE_ISOC:
+			hc_intr_mask.b.xfercompl = 1;
+			hc_intr_mask.b.frmovrun = 1;
+			hc_intr_mask.b.ack = 1;
+
+			if (hc->ep_is_in) {
+				hc_intr_mask.b.xacterr = 1;
+				hc_intr_mask.b.bblerr = 1;
+			}
+			break;
+		}
+	}
+	DWC_WRITE_REG32(&hc_regs->hcintmsk, hc_intr_mask.d32);
+
+	/*
+	 * Program the HCCHARn register with the endpoint characteristics for
+	 * the current transfer.
+	 */
+	hcchar.d32 = 0;
+	hcchar.b.devaddr = hc->dev_addr;
+	hcchar.b.epnum = hc->ep_num;
+	hcchar.b.epdir = hc->ep_is_in;
+	hcchar.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW);
+	hcchar.b.eptype = hc->ep_type;
+	hcchar.b.mps = hc->max_packet;
+
+	DWC_WRITE_REG32(&host_if->hc_regs[hc_num]->hcchar, hcchar.d32);
+
+	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d, Dev Addr %d, EP #%d\n",
+                    __func__, hc->hc_num, hcchar.b.devaddr, hcchar.b.epnum);
+	DWC_DEBUGPL(DBG_HCDV, "	 Is In %d, Is Low Speed %d, EP Type %d, "
+                                "Max Pkt %d, Multi Cnt %d\n",
+                    hcchar.b.epdir, hcchar.b.lspddev, hcchar.b.eptype,
+                    hcchar.b.mps, hcchar.b.multicnt);
+
+	/*
+	 * Program the HCSPLIT register for SPLITs
+	 */
+	hcsplt.d32 = 0;
+	if (hc->do_split) {
+		DWC_DEBUGPL(DBG_HCDV, "Programming HC %d with split --> %s\n",
+			    hc->hc_num,
+			    hc->complete_split ? "CSPLIT" : "SSPLIT");
+		hcsplt.b.compsplt = hc->complete_split;
+		hcsplt.b.xactpos = hc->xact_pos;
+		hcsplt.b.hubaddr = hc->hub_addr;
+		hcsplt.b.prtaddr = hc->port_addr;
+		DWC_DEBUGPL(DBG_HCDV, "\t  comp split %d\n", hc->complete_split);
+		DWC_DEBUGPL(DBG_HCDV, "\t  xact pos %d\n", hc->xact_pos);
+		DWC_DEBUGPL(DBG_HCDV, "\t  hub addr %d\n", hc->hub_addr);
+		DWC_DEBUGPL(DBG_HCDV, "\t  port addr %d\n", hc->port_addr);
+		DWC_DEBUGPL(DBG_HCDV, "\t  is_in %d\n", hc->ep_is_in);
+		DWC_DEBUGPL(DBG_HCDV, "\t  Max Pkt: %d\n", hcchar.b.mps);
+		DWC_DEBUGPL(DBG_HCDV, "\t  xferlen: %d\n", hc->xfer_len);
+	}
+	DWC_WRITE_REG32(&host_if->hc_regs[hc_num]->hcsplt, hcsplt.d32);
+
+}
+
+/**
+ * Attempts to halt a host channel. This function should only be called in
+ * Slave mode or to abort a transfer in either Slave mode or DMA mode. Under
+ * normal circumstances in DMA mode, the controller halts the channel when the
+ * transfer is complete or a condition occurs that requires application
+ * intervention.
+ *
+ * In slave mode, checks for a free request queue entry, then sets the Channel
+ * Enable and Channel Disable bits of the Host Channel Characteristics
+ * register of the specified channel to intiate the halt. If there is no free
+ * request queue entry, sets only the Channel Disable bit of the HCCHARn
+ * register to flush requests for this channel. In the latter case, sets a
+ * flag to indicate that the host channel needs to be halted when a request
+ * queue slot is open.
+ *
+ * In DMA mode, always sets the Channel Enable and Channel Disable bits of the
+ * HCCHARn register. The controller ensures there is space in the request
+ * queue before submitting the halt request.
+ *
+ * Some time may elapse before the core flushes any posted requests for this
+ * host channel and halts. The Channel Halted interrupt handler completes the
+ * deactivation of the host channel.
+ *
+ * @param core_if Controller register interface.
+ * @param hc Host channel to halt.
+ * @param halt_status Reason for halting the channel.
+ */
+void dwc_otg_hc_halt(dwc_otg_core_if_t * core_if,
+		     dwc_hc_t * hc, dwc_otg_halt_status_e halt_status)
+{
+	gnptxsts_data_t nptxsts;
+	hptxsts_data_t hptxsts;
+	hcchar_data_t hcchar;
+	dwc_otg_hc_regs_t *hc_regs;
+	dwc_otg_core_global_regs_t *global_regs;
+	dwc_otg_host_global_regs_t *host_global_regs;
+
+	hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+	global_regs = core_if->core_global_regs;
+	host_global_regs = core_if->host_if->host_global_regs;
+
+	DWC_ASSERT(!(halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS),
+		   "halt_status = %d\n", halt_status);
+
+	if (halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
+	    halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
+		/*
+		 * Disable all channel interrupts except Ch Halted. The QTD
+		 * and QH state associated with this transfer has been cleared
+		 * (in the case of URB_DEQUEUE), so the channel needs to be
+		 * shut down carefully to prevent crashes.
+		 */
+		hcintmsk_data_t hcintmsk;
+		hcintmsk.d32 = 0;
+		hcintmsk.b.chhltd = 1;
+		DWC_WRITE_REG32(&hc_regs->hcintmsk, hcintmsk.d32);
+
+		/*
+		 * Make sure no other interrupts besides halt are currently
+		 * pending. Handling another interrupt could cause a crash due
+		 * to the QTD and QH state.
+		 */
+		DWC_WRITE_REG32(&hc_regs->hcint, ~hcintmsk.d32);
+
+		/*
+		 * Make sure the halt status is set to URB_DEQUEUE or AHB_ERR
+		 * even if the channel was already halted for some other
+		 * reason.
+		 */
+		hc->halt_status = halt_status;
+
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+		if (hcchar.b.chen == 0) {
+			/*
+			 * The channel is either already halted or it hasn't
+			 * started yet. In DMA mode, the transfer may halt if
+			 * it finishes normally or a condition occurs that
+			 * requires driver intervention. Don't want to halt
+			 * the channel again. In either Slave or DMA mode,
+			 * it's possible that the transfer has been assigned
+			 * to a channel, but not started yet when an URB is
+			 * dequeued. Don't want to halt a channel that hasn't
+			 * started yet.
+			 */
+			return;
+		}
+	}
+	if (hc->halt_pending) {
+		/*
+		 * A halt has already been issued for this channel. This might
+		 * happen when a transfer is aborted by a higher level in
+		 * the stack.
+		 */
+#ifdef DEBUG
+		DWC_PRINTF
+		    ("*** %s: Channel %d, _hc->halt_pending already set ***\n",
+		     __func__, hc->hc_num);
+
+#endif
+		return;
+	}
+
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+	/* No need to set the bit in DDMA for disabling the channel */
+	//TODO check it everywhere channel is disabled
+	if (!core_if->core_params->dma_desc_enable)
+		hcchar.b.chen = 1;
+	hcchar.b.chdis = 1;
+
+	if (!core_if->dma_enable) {
+		/* Check for space in the request queue to issue the halt. */
+		if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+		    hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
+			nptxsts.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+			if (nptxsts.b.nptxqspcavail == 0) {
+				hcchar.b.chen = 0;
+			}
+		} else {
+			hptxsts.d32 =
+			    DWC_READ_REG32(&host_global_regs->hptxsts);
+			if ((hptxsts.b.ptxqspcavail == 0)
+			    || (core_if->queuing_high_bandwidth)) {
+				hcchar.b.chen = 0;
+			}
+		}
+	}
+	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+	hc->halt_status = halt_status;
+
+	if (hcchar.b.chen) {
+		hc->halt_pending = 1;
+		hc->halt_on_queue = 0;
+	} else {
+		hc->halt_on_queue = 1;
+	}
+
+	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+	DWC_DEBUGPL(DBG_HCDV, "	 hcchar: 0x%08x\n", hcchar.d32);
+	DWC_DEBUGPL(DBG_HCDV, "	 halt_pending: %d\n", hc->halt_pending);
+	DWC_DEBUGPL(DBG_HCDV, "	 halt_on_queue: %d\n", hc->halt_on_queue);
+	DWC_DEBUGPL(DBG_HCDV, "	 halt_status: %d\n", hc->halt_status);
+
+	return;
+}
+
+/**
+ * Clears the transfer state for a host channel. This function is normally
+ * called after a transfer is done and the host channel is being released.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Identifies the host channel to clean up.
+ */
+void dwc_otg_hc_cleanup(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+	dwc_otg_hc_regs_t *hc_regs;
+
+	hc->xfer_started = 0;
+
+	/*
+	 * Clear channel interrupt enables and any unhandled channel interrupt
+	 * conditions.
+	 */
+	hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0);
+	DWC_WRITE_REG32(&hc_regs->hcint, 0xFFFFFFFF);
+#ifdef DEBUG
+	DWC_TIMER_CANCEL(core_if->hc_xfer_timer[hc->hc_num]);
+#endif
+}
+
+/**
+ * Sets the channel property that indicates in which frame a periodic transfer
+ * should occur. This is always set to the _next_ frame. This function has no
+ * effect on non-periodic transfers.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Identifies the host channel to set up and its properties.
+ * @param hcchar Current value of the HCCHAR register for the specified host
+ * channel.
+ */
+static inline void hc_set_even_odd_frame(dwc_otg_core_if_t * core_if,
+					 dwc_hc_t * hc, hcchar_data_t * hcchar)
+{
+	if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+	    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+		hfnum_data_t hfnum;
+		hfnum.d32 =
+		    DWC_READ_REG32(&core_if->host_if->host_global_regs->hfnum);
+
+		/* 1 if _next_ frame is odd, 0 if it's even */
+		hcchar->b.oddfrm = (hfnum.b.frnum & 0x1) ? 0 : 1;
+#ifdef DEBUG
+		if (hc->ep_type == DWC_OTG_EP_TYPE_INTR && hc->do_split
+		    && !hc->complete_split) {
+			switch (hfnum.b.frnum & 0x7) {
+			case 7:
+				core_if->hfnum_7_samples++;
+				core_if->hfnum_7_frrem_accum += hfnum.b.frrem;
+				break;
+			case 0:
+				core_if->hfnum_0_samples++;
+				core_if->hfnum_0_frrem_accum += hfnum.b.frrem;
+				break;
+			default:
+				core_if->hfnum_other_samples++;
+				core_if->hfnum_other_frrem_accum +=
+				    hfnum.b.frrem;
+				break;
+			}
+		}
+#endif
+	}
+}
+
+#ifdef DEBUG
+void hc_xfer_timeout(void *ptr)
+{
+	hc_xfer_info_t *xfer_info = NULL;
+	int hc_num = 0;
+
+	if (ptr)
+		xfer_info = (hc_xfer_info_t *) ptr;
+
+	if (!xfer_info->hc) {
+		DWC_ERROR("xfer_info->hc = %p\n", xfer_info->hc);
+		return;
+	}
+
+	hc_num = xfer_info->hc->hc_num;
+	DWC_WARN("%s: timeout on channel %d\n", __func__, hc_num);
+	DWC_WARN("	start_hcchar_val 0x%08x\n",
+		 xfer_info->core_if->start_hcchar_val[hc_num]);
+}
+#endif
+
+void ep_xfer_timeout(void *ptr)
+{
+	ep_xfer_info_t *xfer_info = NULL;
+	int ep_num = 0;
+	dctl_data_t dctl = {.d32 = 0 };
+	gintsts_data_t gintsts = {.d32 = 0 };
+	gintmsk_data_t gintmsk = {.d32 = 0 };
+
+	if (ptr)
+		xfer_info = (ep_xfer_info_t *) ptr;
+
+	if (!xfer_info->ep) {
+		DWC_ERROR("xfer_info->ep = %p\n", xfer_info->ep);
+		return;
+	}
+
+	ep_num = xfer_info->ep->num;
+	DWC_WARN("%s: timeout on endpoit %d\n", __func__, ep_num);
+	/* Put the sate to 2 as it was time outed */
+	xfer_info->state = 2;
+
+	dctl.d32 =
+	    DWC_READ_REG32(&xfer_info->core_if->dev_if->dev_global_regs->dctl);
+	gintsts.d32 =
+	    DWC_READ_REG32(&xfer_info->core_if->core_global_regs->gintsts);
+	gintmsk.d32 =
+	    DWC_READ_REG32(&xfer_info->core_if->core_global_regs->gintmsk);
+
+	if (!gintmsk.b.goutnakeff) {
+		/* Unmask it */
+		gintmsk.b.goutnakeff = 1;
+		DWC_WRITE_REG32(&xfer_info->core_if->core_global_regs->gintmsk,
+				gintmsk.d32);
+
+	}
+
+	if (!gintsts.b.goutnakeff) {
+		dctl.b.sgoutnak = 1;
+	}
+	DWC_WRITE_REG32(&xfer_info->core_if->dev_if->dev_global_regs->dctl,
+			dctl.d32);
+
+}
+
+void set_pid_isoc(dwc_hc_t * hc)
+{
+	/* Set up the initial PID for the transfer. */
+	if (hc->speed == DWC_OTG_EP_SPEED_HIGH) {
+		if (hc->ep_is_in) {
+			if (hc->multi_count == 1) {
+				hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+			} else if (hc->multi_count == 2) {
+				hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
+			} else {
+				hc->data_pid_start = DWC_OTG_HC_PID_DATA2;
+			}
+		} else {
+			if (hc->multi_count == 1) {
+				hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+			} else {
+				hc->data_pid_start = DWC_OTG_HC_PID_MDATA;
+			}
+		}
+	} else {
+		hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+	}
+}
+
+/**
+ * This function does the setup for a data transfer for a host channel and
+ * starts the transfer. May be called in either Slave mode or DMA mode. In
+ * Slave mode, the caller must ensure that there is sufficient space in the
+ * request queue and Tx Data FIFO.
+ *
+ * For an OUT transfer in Slave mode, it loads a data packet into the
+ * appropriate FIFO. If necessary, additional data packets will be loaded in
+ * the Host ISR.
+ *
+ * For an IN transfer in Slave mode, a data packet is requested. The data
+ * packets are unloaded from the Rx FIFO in the Host ISR. If necessary,
+ * additional data packets are requested in the Host ISR.
+ *
+ * For a PING transfer in Slave mode, the Do Ping bit is set in the HCTSIZ
+ * register along with a packet count of 1 and the channel is enabled. This
+ * causes a single PING transaction to occur. Other fields in HCTSIZ are
+ * simply set to 0 since no data transfer occurs in this case.
+ *
+ * For a PING transfer in DMA mode, the HCTSIZ register is initialized with
+ * all the information required to perform the subsequent data transfer. In
+ * addition, the Do Ping bit is set in the HCTSIZ register. In this case, the
+ * controller performs the entire PING protocol, then starts the data
+ * transfer.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Information needed to initialize the host channel. The xfer_len
+ * value may be reduced to accommodate the max widths of the XferSize and
+ * PktCnt fields in the HCTSIZn register. The multi_count value may be changed
+ * to reflect the final xfer_len value.
+ */
+void dwc_otg_hc_start_transfer(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+	hcchar_data_t hcchar;
+	hctsiz_data_t hctsiz;
+	uint16_t num_packets;
+	uint32_t max_hc_xfer_size = core_if->core_params->max_transfer_size;
+	uint16_t max_hc_pkt_count = core_if->core_params->max_packet_count;
+	dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+
+	hctsiz.d32 = 0;
+
+	if (hc->do_ping) {
+		if (!core_if->dma_enable) {
+			dwc_otg_hc_do_ping(core_if, hc);
+			hc->xfer_started = 1;
+			return;
+		} else {
+			hctsiz.b.dopng = 1;
+		}
+	}
+
+	if (hc->do_split) {
+		num_packets = 1;
+
+		if (hc->complete_split && !hc->ep_is_in) {
+			/* For CSPLIT OUT Transfer, set the size to 0 so the
+			 * core doesn't expect any data written to the FIFO */
+			hc->xfer_len = 0;
+		} else if (hc->ep_is_in || (hc->xfer_len > hc->max_packet)) {
+			hc->xfer_len = hc->max_packet;
+		} else if (!hc->ep_is_in && (hc->xfer_len > 188)) {
+			hc->xfer_len = 188;
+		}
+
+		hctsiz.b.xfersize = hc->xfer_len;
+	} else {
+		/*
+		 * Ensure that the transfer length and packet count will fit
+		 * in the widths allocated for them in the HCTSIZn register.
+		 */
+		if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+		    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+			/*
+			 * Make sure the transfer size is no larger than one
+			 * (micro)frame's worth of data. (A check was done
+			 * when the periodic transfer was accepted to ensure
+			 * that a (micro)frame's worth of data can be
+			 * programmed into a channel.)
+			 */
+			uint32_t max_periodic_len =
+			    hc->multi_count * hc->max_packet;
+			if (hc->xfer_len > max_periodic_len) {
+				hc->xfer_len = max_periodic_len;
+			} else {
+			}
+		} else if (hc->xfer_len > max_hc_xfer_size) {
+			/* Make sure that xfer_len is a multiple of max packet size. */
+			hc->xfer_len = max_hc_xfer_size - hc->max_packet + 1;
+		}
+
+		if (hc->xfer_len > 0) {
+			num_packets =
+			    (hc->xfer_len + hc->max_packet -
+			     1) / hc->max_packet;
+			if (num_packets > max_hc_pkt_count) {
+				num_packets = max_hc_pkt_count;
+				hc->xfer_len = num_packets * hc->max_packet;
+			}
+		} else {
+			/* Need 1 packet for transfer length of 0. */
+			num_packets = 1;
+		}
+
+		if (hc->ep_is_in) {
+			/* Always program an integral # of max packets for IN transfers. */
+			hc->xfer_len = num_packets * hc->max_packet;
+		}
+
+		if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+		    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+			/*
+			 * Make sure that the multi_count field matches the
+			 * actual transfer length.
+			 */
+			hc->multi_count = num_packets;
+		}
+
+		if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
+			set_pid_isoc(hc);
+
+		hctsiz.b.xfersize = hc->xfer_len;
+	}
+
+	hc->start_pkt_count = num_packets;
+	hctsiz.b.pktcnt = num_packets;
+	hctsiz.b.pid = hc->data_pid_start;
+	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+	DWC_DEBUGPL(DBG_HCDV, "	 Xfer Size: %d\n", hctsiz.b.xfersize);
+	DWC_DEBUGPL(DBG_HCDV, "	 Num Pkts: %d\n", hctsiz.b.pktcnt);
+	DWC_DEBUGPL(DBG_HCDV, "	 Start PID: %d\n", hctsiz.b.pid);
+
+	if (core_if->dma_enable) {
+		dwc_dma_t dma_addr;
+		if (hc->align_buff) {
+			dma_addr = hc->align_buff;
+		} else {
+			dma_addr = ((unsigned long)hc->xfer_buff & 0xffffffff);
+		}
+		DWC_WRITE_REG32(&hc_regs->hcdma, dma_addr);
+	}
+
+	/* Start the split */
+	if (hc->do_split) {
+		hcsplt_data_t hcsplt;
+		hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
+		hcsplt.b.spltena = 1;
+		DWC_WRITE_REG32(&hc_regs->hcsplt, hcsplt.d32);
+	}
+
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	hcchar.b.multicnt = hc->multi_count;
+	hc_set_even_odd_frame(core_if, hc, &hcchar);
+#ifdef DEBUG
+	core_if->start_hcchar_val[hc->hc_num] = hcchar.d32;
+	if (hcchar.b.chdis) {
+		DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
+			 __func__, hc->hc_num, hcchar.d32);
+	}
+#endif
+
+	/* Set host channel enable after all other setup is complete. */
+	hcchar.b.chen = 1;
+	hcchar.b.chdis = 0;
+	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+	hc->xfer_started = 1;
+	hc->requests++;
+
+	if (!core_if->dma_enable && !hc->ep_is_in && hc->xfer_len > 0) {
+		/* Load OUT packet into the appropriate Tx FIFO. */
+		dwc_otg_hc_write_packet(core_if, hc);
+	}
+#ifdef DEBUG
+	if (hc->ep_type != DWC_OTG_EP_TYPE_INTR) {
+                DWC_DEBUGPL(DBG_HCDV, "transfer %d from core_if %p\n",
+                            hc->hc_num, core_if);//GRAYG
+		core_if->hc_xfer_info[hc->hc_num].core_if = core_if;
+		core_if->hc_xfer_info[hc->hc_num].hc = hc;
+
+		/* Start a timer for this transfer. */
+		DWC_TIMER_SCHEDULE(core_if->hc_xfer_timer[hc->hc_num], 10000);
+	}
+#endif
+}
+
+/**
+ * This function does the setup for a data transfer for a host channel
+ * and starts the transfer in Descriptor DMA mode.
+ *
+ * Initializes HCTSIZ register. For a PING transfer the Do Ping bit is set.
+ * Sets PID and NTD values. For periodic transfers
+ * initializes SCHED_INFO field with micro-frame bitmap.
+ *
+ * Initializes HCDMA register with descriptor list address and CTD value
+ * then starts the transfer via enabling the channel.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Information needed to initialize the host channel.
+ */
+void dwc_otg_hc_start_transfer_ddma(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+	dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+	hcchar_data_t hcchar;
+	hctsiz_data_t hctsiz;
+	hcdma_data_t hcdma;
+
+	hctsiz.d32 = 0;
+
+	if (hc->do_ping)
+		hctsiz.b_ddma.dopng = 1;
+
+	if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
+		set_pid_isoc(hc);
+
+	/* Packet Count and Xfer Size are not used in Descriptor DMA mode */
+	hctsiz.b_ddma.pid = hc->data_pid_start;
+	hctsiz.b_ddma.ntd = hc->ntd - 1;	/* 0 - 1 descriptor, 1 - 2 descriptors, etc. */
+	hctsiz.b_ddma.schinfo = hc->schinfo;	/* Non-zero only for high-speed interrupt endpoints */
+
+	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+	DWC_DEBUGPL(DBG_HCDV, "	 Start PID: %d\n", hctsiz.b.pid);
+	DWC_DEBUGPL(DBG_HCDV, "	 NTD: %d\n", hctsiz.b_ddma.ntd);
+
+	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+	hcdma.d32 = 0;
+	hcdma.b.dma_addr = ((uint32_t) hc->desc_list_addr) >> 11;
+
+	/* Always start from first descriptor. */
+	hcdma.b.ctd = 0;
+	DWC_WRITE_REG32(&hc_regs->hcdma, hcdma.d32);
+
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	hcchar.b.multicnt = hc->multi_count;
+
+#ifdef DEBUG
+	core_if->start_hcchar_val[hc->hc_num] = hcchar.d32;
+	if (hcchar.b.chdis) {
+		DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
+			 __func__, hc->hc_num, hcchar.d32);
+	}
+#endif
+
+	/* Set host channel enable after all other setup is complete. */
+	hcchar.b.chen = 1;
+	hcchar.b.chdis = 0;
+
+	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+	hc->xfer_started = 1;
+	hc->requests++;
+
+#ifdef DEBUG
+	if ((hc->ep_type != DWC_OTG_EP_TYPE_INTR)
+	    && (hc->ep_type != DWC_OTG_EP_TYPE_ISOC)) {
+                DWC_DEBUGPL(DBG_HCDV, "DMA transfer %d from core_if %p\n",
+                            hc->hc_num, core_if);//GRAYG
+		core_if->hc_xfer_info[hc->hc_num].core_if = core_if;
+		core_if->hc_xfer_info[hc->hc_num].hc = hc;
+		/* Start a timer for this transfer. */
+		DWC_TIMER_SCHEDULE(core_if->hc_xfer_timer[hc->hc_num], 10000);
+	}
+#endif
+
+}
+
+/**
+ * This function continues a data transfer that was started by previous call
+ * to <code>dwc_otg_hc_start_transfer</code>. The caller must ensure there is
+ * sufficient space in the request queue and Tx Data FIFO. This function
+ * should only be called in Slave mode. In DMA mode, the controller acts
+ * autonomously to complete transfers programmed to a host channel.
+ *
+ * For an OUT transfer, a new data packet is loaded into the appropriate FIFO
+ * if there is any data remaining to be queued. For an IN transfer, another
+ * data packet is always requested. For the SETUP phase of a control transfer,
+ * this function does nothing.
+ *
+ * @return 1 if a new request is queued, 0 if no more requests are required
+ * for this transfer.
+ */
+int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+
+	if (hc->do_split) {
+		/* SPLITs always queue just once per channel */
+		return 0;
+	} else if (hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
+		/* SETUPs are queued only once since they can't be NAKed. */
+		return 0;
+	} else if (hc->ep_is_in) {
+		/*
+		 * Always queue another request for other IN transfers. If
+		 * back-to-back INs are issued and NAKs are received for both,
+		 * the driver may still be processing the first NAK when the
+		 * second NAK is received. When the interrupt handler clears
+		 * the NAK interrupt for the first NAK, the second NAK will
+		 * not be seen. So we can't depend on the NAK interrupt
+		 * handler to requeue a NAKed request. Instead, IN requests
+		 * are issued each time this function is called. When the
+		 * transfer completes, the extra requests for the channel will
+		 * be flushed.
+		 */
+		hcchar_data_t hcchar;
+		dwc_otg_hc_regs_t *hc_regs =
+		    core_if->host_if->hc_regs[hc->hc_num];
+
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+		hc_set_even_odd_frame(core_if, hc, &hcchar);
+		hcchar.b.chen = 1;
+		hcchar.b.chdis = 0;
+		DWC_DEBUGPL(DBG_HCDV, "	 IN xfer: hcchar = 0x%08x\n",
+			    hcchar.d32);
+		DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+		hc->requests++;
+		return 1;
+	} else {
+		/* OUT transfers. */
+		if (hc->xfer_count < hc->xfer_len) {
+			if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+			    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+				hcchar_data_t hcchar;
+				dwc_otg_hc_regs_t *hc_regs;
+				hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+				hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+				hc_set_even_odd_frame(core_if, hc, &hcchar);
+			}
+
+			/* Load OUT packet into the appropriate Tx FIFO. */
+			dwc_otg_hc_write_packet(core_if, hc);
+			hc->requests++;
+			return 1;
+		} else {
+			return 0;
+		}
+	}
+}
+
+/**
+ * Starts a PING transfer. This function should only be called in Slave mode.
+ * The Do Ping bit is set in the HCTSIZ register, then the channel is enabled.
+ */
+void dwc_otg_hc_do_ping(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+	hcchar_data_t hcchar;
+	hctsiz_data_t hctsiz;
+	dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+
+	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+
+	hctsiz.d32 = 0;
+	hctsiz.b.dopng = 1;
+	hctsiz.b.pktcnt = 1;
+	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	hcchar.b.chen = 1;
+	hcchar.b.chdis = 0;
+	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+}
+
+/*
+ * This function writes a packet into the Tx FIFO associated with the Host
+ * Channel. For a channel associated with a non-periodic EP, the non-periodic
+ * Tx FIFO is written. For a channel associated with a periodic EP, the
+ * periodic Tx FIFO is written. This function should only be called in Slave
+ * mode.
+ *
+ * Upon return the xfer_buff and xfer_count fields in _hc are incremented by
+ * then number of bytes written to the Tx FIFO.
+ */
+void dwc_otg_hc_write_packet(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
+{
+	uint32_t i;
+	uint32_t remaining_count;
+	uint32_t byte_count;
+	uint32_t dword_count;
+
+	uint32_t *data_buff = (uint32_t *) (hc->xfer_buff);
+	uint32_t *data_fifo = core_if->data_fifo[hc->hc_num];
+
+	remaining_count = hc->xfer_len - hc->xfer_count;
+	if (remaining_count > hc->max_packet) {
+		byte_count = hc->max_packet;
+	} else {
+		byte_count = remaining_count;
+	}
+
+	dword_count = (byte_count + 3) / 4;
+
+	if ((((unsigned long)data_buff) & 0x3) == 0) {
+		/* xfer_buff is DWORD aligned. */
+		for (i = 0; i < dword_count; i++, data_buff++) {
+			DWC_WRITE_REG32(data_fifo, *data_buff);
+		}
+	} else {
+		/* xfer_buff is not DWORD aligned. */
+		for (i = 0; i < dword_count; i++, data_buff++) {
+			uint32_t data;
+			data =
+			    (data_buff[0] | data_buff[1] << 8 | data_buff[2] <<
+			     16 | data_buff[3] << 24);
+			DWC_WRITE_REG32(data_fifo, data);
+		}
+	}
+
+	hc->xfer_count += byte_count;
+	hc->xfer_buff += byte_count;
+}
+
+/**
+ * Gets the current USB frame number. This is the frame number from the last
+ * SOF packet.
+ */
+uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t * core_if)
+{
+	dsts_data_t dsts;
+	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+	/* read current frame/microframe number from DSTS register */
+	return dsts.b.soffn;
+}
+
+/**
+ * Calculates and gets the frame Interval value of HFIR register according PHY
+ * type and speed.The application can modify a value of HFIR register only after
+ * the Port Enable bit of the Host Port Control and Status register
+ * (HPRT.PrtEnaPort) has been set.
+*/
+
+uint32_t calc_frame_interval(dwc_otg_core_if_t * core_if)
+{
+	gusbcfg_data_t usbcfg;
+	hwcfg2_data_t hwcfg2;
+	hprt0_data_t hprt0;
+	int clock = 60;		// default value
+	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+	hwcfg2.d32 = DWC_READ_REG32(&core_if->core_global_regs->ghwcfg2);
+	hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+	if (!usbcfg.b.physel && usbcfg.b.ulpi_utmi_sel && !usbcfg.b.phyif)
+		clock = 60;
+	if (usbcfg.b.physel && hwcfg2.b.fs_phy_type == 3)
+		clock = 48;
+	if (!usbcfg.b.phylpwrclksel && !usbcfg.b.physel &&
+	    !usbcfg.b.ulpi_utmi_sel && usbcfg.b.phyif)
+		clock = 30;
+	if (!usbcfg.b.phylpwrclksel && !usbcfg.b.physel &&
+	    !usbcfg.b.ulpi_utmi_sel && !usbcfg.b.phyif)
+		clock = 60;
+	if (usbcfg.b.phylpwrclksel && !usbcfg.b.physel &&
+	    !usbcfg.b.ulpi_utmi_sel && usbcfg.b.phyif)
+		clock = 48;
+	if (usbcfg.b.physel && !usbcfg.b.phyif && hwcfg2.b.fs_phy_type == 2)
+		clock = 48;
+	if (usbcfg.b.physel && hwcfg2.b.fs_phy_type == 1)
+		clock = 48;
+	if (hprt0.b.prtspd == 0)
+		/* High speed case */
+		return 125 * clock;
+	else
+		/* FS/LS case */
+		return 1000 * clock;
+}
+
+/**
+ * This function reads a setup packet from the Rx FIFO into the destination
+ * buffer. This function is called from the Rx Status Queue Level (RxStsQLvl)
+ * Interrupt routine when a SETUP packet has been received in Slave mode.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dest Destination buffer for packet data.
+ */
+void dwc_otg_read_setup_packet(dwc_otg_core_if_t * core_if, uint32_t * dest)
+{
+	device_grxsts_data_t status;
+	/* Get the 8 bytes of a setup transaction data */
+
+	/* Pop 2 DWORDS off the receive data FIFO into memory */
+	dest[0] = DWC_READ_REG32(core_if->data_fifo[0]);
+	dest[1] = DWC_READ_REG32(core_if->data_fifo[0]);
+	if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+		status.d32 =
+		    DWC_READ_REG32(&core_if->core_global_regs->grxstsp);
+		DWC_DEBUGPL(DBG_ANY,
+			    "EP:%d BCnt:%d " "pktsts:%x Frame:%d(0x%0x)\n",
+			    status.b.epnum, status.b.bcnt, status.b.pktsts,
+			    status.b.fn, status.b.fn);
+	}
+}
+
+/**
+ * This function enables EP0 OUT to receive SETUP packets and configures EP0
+ * IN for transmitting packets. It is normally called when the
+ * "Enumeration Done" interrupt occurs.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP0 data.
+ */
+void dwc_otg_ep0_activate(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	dsts_data_t dsts;
+	depctl_data_t diepctl;
+	depctl_data_t doepctl;
+	dctl_data_t dctl = {.d32 = 0 };
+
+	ep->stp_rollover = 0;
+	/* Read the Device Status and Endpoint 0 Control registers */
+	dsts.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dsts);
+	diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl);
+	doepctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl);
+
+	/* Set the MPS of the IN EP based on the enumeration speed */
+	switch (dsts.b.enumspd) {
+	case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ:
+	case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ:
+	case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ:
+		diepctl.b.mps = DWC_DEP0CTL_MPS_64;
+		break;
+	case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ:
+		diepctl.b.mps = DWC_DEP0CTL_MPS_8;
+		break;
+	}
+
+	DWC_WRITE_REG32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
+
+	/* Enable OUT EP for receive */
+	if (core_if->snpsid <= OTG_CORE_REV_2_94a) {
+	doepctl.b.epena = 1;
+	DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32);
+	}
+#ifdef VERBOSE
+	DWC_DEBUGPL(DBG_PCDV, "doepctl0=%0x\n",
+		    DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl));
+	DWC_DEBUGPL(DBG_PCDV, "diepctl0=%0x\n",
+		    DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl));
+#endif
+	dctl.b.cgnpinnak = 1;
+
+	DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
+	DWC_DEBUGPL(DBG_PCDV, "dctl=%0x\n",
+		    DWC_READ_REG32(&dev_if->dev_global_regs->dctl));
+
+}
+
+/**
+ * This function activates an EP.  The Device EP control register for
+ * the EP is configured as defined in the ep structure. Note: This
+ * function is not used for EP0.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to activate.
+ */
+void dwc_otg_ep_activate(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	depctl_data_t depctl;
+	volatile uint32_t *addr;
+	daint_data_t daintmsk = {.d32 = 0 };
+	dcfg_data_t dcfg;
+	uint8_t i;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s() EP%d-%s\n", __func__, ep->num,
+		    (ep->is_in ? "IN" : "OUT"));
+
+#ifdef DWC_UTE_PER_IO
+	ep->xiso_frame_num = 0xFFFFFFFF;
+	ep->xiso_active_xfers = 0;
+	ep->xiso_queued_xfers = 0;
+#endif
+	/* Read DEPCTLn register */
+	if (ep->is_in == 1) {
+		addr = &dev_if->in_ep_regs[ep->num]->diepctl;
+		daintmsk.ep.in = 1 << ep->num;
+	} else {
+		addr = &dev_if->out_ep_regs[ep->num]->doepctl;
+		daintmsk.ep.out = 1 << ep->num;
+	}
+
+	/* If the EP is already active don't change the EP Control
+	 * register. */
+	depctl.d32 = DWC_READ_REG32(addr);
+	if (!depctl.b.usbactep) {
+		depctl.b.mps = ep->maxpacket;
+		depctl.b.eptype = ep->type;
+		depctl.b.txfnum = ep->tx_fifo_num;
+
+		if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+			depctl.b.setd0pid = 1;	// ???
+		} else {
+			depctl.b.setd0pid = 1;
+		}
+		depctl.b.usbactep = 1;
+
+		/* Update nextep_seq array and EPMSCNT in DCFG*/
+		if (!(depctl.b.eptype & 1) && (ep->is_in == 1)) {	// NP IN EP
+			for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+				if (core_if->nextep_seq[i] == core_if->first_in_nextep_seq)
+				break;
+			}
+			core_if->nextep_seq[i] = ep->num;
+			core_if->nextep_seq[ep->num] = core_if->first_in_nextep_seq;
+			depctl.b.nextep = core_if->nextep_seq[ep->num];
+			dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+			dcfg.b.epmscnt++;
+			DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+			DWC_DEBUGPL(DBG_PCDV,
+				    "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
+				__func__, core_if->first_in_nextep_seq);
+			for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+				DWC_DEBUGPL(DBG_PCDV, "%2d\n",
+					    core_if->nextep_seq[i]);
+			}
+
+		}
+
+
+		DWC_WRITE_REG32(addr, depctl.d32);
+		DWC_DEBUGPL(DBG_PCDV, "DEPCTL=%08x\n", DWC_READ_REG32(addr));
+	}
+
+	/* Enable the Interrupt for this EP */
+	if (core_if->multiproc_int_enable) {
+		if (ep->is_in == 1) {
+			diepmsk_data_t diepmsk = {.d32 = 0 };
+			diepmsk.b.xfercompl = 1;
+			diepmsk.b.timeout = 1;
+			diepmsk.b.epdisabled = 1;
+			diepmsk.b.ahberr = 1;
+			diepmsk.b.intknepmis = 1;
+			if (!core_if->en_multiple_tx_fifo && core_if->dma_enable)
+				diepmsk.b.intknepmis = 0;
+			diepmsk.b.txfifoundrn = 1;	//?????
+			if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+				diepmsk.b.nak = 1;
+			}
+
+
+
+/*
+			if (core_if->dma_desc_enable) {
+				diepmsk.b.bna = 1;
+			}
+*/
+/*
+			if (core_if->dma_enable) {
+				doepmsk.b.nak = 1;
+			}
+*/
+			DWC_WRITE_REG32(&dev_if->dev_global_regs->
+					diepeachintmsk[ep->num], diepmsk.d32);
+
+		} else {
+			doepmsk_data_t doepmsk = {.d32 = 0 };
+			doepmsk.b.xfercompl = 1;
+			doepmsk.b.ahberr = 1;
+			doepmsk.b.epdisabled = 1;
+			if (ep->type == DWC_OTG_EP_TYPE_ISOC)
+				doepmsk.b.outtknepdis = 1;
+
+/*
+
+			if (core_if->dma_desc_enable) {
+				doepmsk.b.bna = 1;
+			}
+*/
+/*
+			doepmsk.b.babble = 1;
+			doepmsk.b.nyet = 1;
+			doepmsk.b.nak = 1;
+*/
+			DWC_WRITE_REG32(&dev_if->dev_global_regs->
+					doepeachintmsk[ep->num], doepmsk.d32);
+		}
+		DWC_MODIFY_REG32(&dev_if->dev_global_regs->deachintmsk,
+				 0, daintmsk.d32);
+	} else {
+		if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+			if (ep->is_in) {
+				diepmsk_data_t diepmsk = {.d32 = 0 };
+				diepmsk.b.nak = 1;
+				DWC_MODIFY_REG32(&dev_if->dev_global_regs->diepmsk, 0, diepmsk.d32);
+			} else {
+				doepmsk_data_t doepmsk = {.d32 = 0 };
+				doepmsk.b.outtknepdis = 1;
+				DWC_MODIFY_REG32(&dev_if->dev_global_regs->doepmsk, 0, doepmsk.d32);
+			}
+		}
+		DWC_MODIFY_REG32(&dev_if->dev_global_regs->daintmsk,
+				 0, daintmsk.d32);
+	}
+
+	DWC_DEBUGPL(DBG_PCDV, "DAINTMSK=%0x\n",
+		    DWC_READ_REG32(&dev_if->dev_global_regs->daintmsk));
+
+	ep->stall_clear_flag = 0;
+
+	return;
+}
+
+/**
+ * This function deactivates an EP. This is done by clearing the USB Active
+ * EP bit in the Device EP control register. Note: This function is not used
+ * for EP0. EP0 cannot be deactivated.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to deactivate.
+ */
+void dwc_otg_ep_deactivate(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	depctl_data_t depctl = {.d32 = 0 };
+	volatile uint32_t *addr;
+	daint_data_t daintmsk = {.d32 = 0 };
+	dcfg_data_t dcfg;
+	uint8_t i = 0;
+
+#ifdef DWC_UTE_PER_IO
+	ep->xiso_frame_num = 0xFFFFFFFF;
+	ep->xiso_active_xfers = 0;
+	ep->xiso_queued_xfers = 0;
+#endif
+
+	/* Read DEPCTLn register */
+	if (ep->is_in == 1) {
+		addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+		daintmsk.ep.in = 1 << ep->num;
+	} else {
+		addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+		daintmsk.ep.out = 1 << ep->num;
+	}
+
+	depctl.d32 = DWC_READ_REG32(addr);
+
+	depctl.b.usbactep = 0;
+
+	/* Update nextep_seq array and EPMSCNT in DCFG*/
+	if (!(depctl.b.eptype & 1) && ep->is_in == 1) {	// NP EP IN
+		for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+			if (core_if->nextep_seq[i] == ep->num)
+			break;
+		}
+		core_if->nextep_seq[i] = core_if->nextep_seq[ep->num];
+		if (core_if->first_in_nextep_seq == ep->num)
+			core_if->first_in_nextep_seq = i;
+		core_if->nextep_seq[ep->num] = 0xff;
+		depctl.b.nextep = 0;
+		dcfg.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+		dcfg.b.epmscnt--;
+		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg,
+				dcfg.d32);
+
+		DWC_DEBUGPL(DBG_PCDV,
+			    "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
+				__func__, core_if->first_in_nextep_seq);
+			for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+				DWC_DEBUGPL(DBG_PCDV, "%2d\n", core_if->nextep_seq[i]);
+			}
+	}
+
+	if (ep->is_in == 1)
+		depctl.b.txfnum = 0;
+
+	if (core_if->dma_desc_enable)
+		depctl.b.epdis = 1;
+
+	DWC_WRITE_REG32(addr, depctl.d32);
+	depctl.d32 = DWC_READ_REG32(addr);
+	if (core_if->dma_enable && ep->type == DWC_OTG_EP_TYPE_ISOC
+	    && depctl.b.epena) {
+		depctl_data_t depctl = {.d32 = 0};
+		if (ep->is_in) {
+			diepint_data_t diepint = {.d32 = 0};
+
+			depctl.b.snak = 1;
+			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+					diepctl, depctl.d32);
+			do {
+				dwc_udelay(10);
+				diepint.d32 =
+				    DWC_READ_REG32(&core_if->
+						   dev_if->in_ep_regs[ep->num]->
+						   diepint);
+			} while (!diepint.b.inepnakeff);
+			diepint.b.inepnakeff = 1;
+			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+					diepint, diepint.d32);
+			depctl.d32 = 0;
+			depctl.b.epdis = 1;
+			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+					diepctl, depctl.d32);
+			do {
+				dwc_udelay(10);
+				diepint.d32 =
+				    DWC_READ_REG32(&core_if->
+						   dev_if->in_ep_regs[ep->num]->
+						   diepint);
+			} while (!diepint.b.epdisabled);
+			diepint.b.epdisabled = 1;
+			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+					diepint, diepint.d32);
+		} else {
+			dctl_data_t dctl = {.d32 = 0};
+			gintmsk_data_t gintsts = {.d32 = 0};
+			doepint_data_t doepint = {.d32 = 0};
+			dctl.b.sgoutnak = 1;
+			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+					 dctl, 0, dctl.d32);
+			do {
+				dwc_udelay(10);
+				gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+			} while (!gintsts.b.goutnakeff);
+			gintsts.d32 = 0;
+			gintsts.b.goutnakeff = 1;
+			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+			depctl.d32 = 0;
+			depctl.b.epdis = 1;
+			depctl.b.snak = 1;
+			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[ep->num]->doepctl, depctl.d32);
+			do
+			{
+				dwc_udelay(10);
+				doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+											out_ep_regs[ep->num]->doepint);
+			} while (!doepint.b.epdisabled);
+
+			doepint.b.epdisabled = 1;
+			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[ep->num]->doepint, doepint.d32);
+
+			dctl.d32 = 0;
+			dctl.b.cgoutnak = 1;
+			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+		}
+	}
+
+	/* Disable the Interrupt for this EP */
+	if (core_if->multiproc_int_enable) {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->deachintmsk,
+				 daintmsk.d32, 0);
+
+		if (ep->is_in == 1) {
+			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
+					diepeachintmsk[ep->num], 0);
+		} else {
+			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
+					doepeachintmsk[ep->num], 0);
+		}
+	} else {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->daintmsk,
+				 daintmsk.d32, 0);
+	}
+
+}
+
+/**
+ * This function initializes dma descriptor chain.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+static void init_dma_desc_chain(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	dwc_otg_dev_dma_desc_t *dma_desc;
+	uint32_t offset;
+	uint32_t xfer_est;
+	int i;
+	unsigned maxxfer_local, total_len;
+
+	if (!ep->is_in && ep->type == DWC_OTG_EP_TYPE_INTR &&
+					(ep->maxpacket%4)) {
+		maxxfer_local = ep->maxpacket;
+		total_len = ep->xfer_len;
+	} else {
+		maxxfer_local = ep->maxxfer;
+		total_len = ep->total_len;
+	}
+
+	ep->desc_cnt = (total_len / maxxfer_local) +
+            ((total_len % maxxfer_local) ? 1 : 0);
+
+	if (!ep->desc_cnt)
+		ep->desc_cnt = 1;
+
+	if (ep->desc_cnt > MAX_DMA_DESC_CNT)
+		ep->desc_cnt = MAX_DMA_DESC_CNT;
+
+	dma_desc = ep->desc_addr;
+	if (maxxfer_local == ep->maxpacket) {
+		if ((total_len % maxxfer_local) &&
+				(total_len/maxxfer_local < MAX_DMA_DESC_CNT)) {
+			xfer_est = (ep->desc_cnt - 1) * maxxfer_local +
+					(total_len % maxxfer_local);
+		} else
+			xfer_est = ep->desc_cnt * maxxfer_local;
+	} else
+		xfer_est = total_len;
+	offset = 0;
+	for (i = 0; i < ep->desc_cnt; ++i) {
+		/** DMA Descriptor Setup */
+		if (xfer_est > maxxfer_local) {
+			dma_desc->status.b.bs = BS_HOST_BUSY;
+			dma_desc->status.b.l = 0;
+			dma_desc->status.b.ioc = 0;
+			dma_desc->status.b.sp = 0;
+			dma_desc->status.b.bytes = maxxfer_local;
+			dma_desc->buf = ep->dma_addr + offset;
+			dma_desc->status.b.sts = 0;
+			dma_desc->status.b.bs = BS_HOST_READY;
+
+			xfer_est -= maxxfer_local;
+			offset += maxxfer_local;
+		} else {
+			dma_desc->status.b.bs = BS_HOST_BUSY;
+			dma_desc->status.b.l = 1;
+			dma_desc->status.b.ioc = 1;
+			if (ep->is_in) {
+				dma_desc->status.b.sp =
+				    (xfer_est %
+				     ep->maxpacket) ? 1 : ((ep->
+							    sent_zlp) ? 1 : 0);
+				dma_desc->status.b.bytes = xfer_est;
+			} else {
+				if (maxxfer_local == ep->maxpacket)
+					dma_desc->status.b.bytes = xfer_est;
+				else
+					dma_desc->status.b.bytes =
+						xfer_est + ((4 - (xfer_est & 0x3)) & 0x3);
+			}
+
+			dma_desc->buf = ep->dma_addr + offset;
+			dma_desc->status.b.sts = 0;
+			dma_desc->status.b.bs = BS_HOST_READY;
+		}
+		dma_desc++;
+	}
+}
+/**
+ * This function is called when to write ISOC data into appropriate dedicated
+ * periodic FIFO.
+ */
+static int32_t write_isoc_tx_fifo(dwc_otg_core_if_t * core_if, dwc_ep_t * dwc_ep)
+{
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	dwc_otg_dev_in_ep_regs_t *ep_regs;
+	dtxfsts_data_t txstatus = {.d32 = 0 };
+	uint32_t len = 0;
+	int epnum = dwc_ep->num;
+	int dwords;
+
+	DWC_DEBUGPL(DBG_PCD, "Dedicated TxFifo Empty: %d \n", epnum);
+
+	ep_regs = core_if->dev_if->in_ep_regs[epnum];
+
+	len = dwc_ep->xfer_len - dwc_ep->xfer_count;
+
+	if (len > dwc_ep->maxpacket) {
+		len = dwc_ep->maxpacket;
+	}
+
+	dwords = (len + 3) / 4;
+
+	/* While there is space in the queue and space in the FIFO and
+	 * More data to tranfer, Write packets to the Tx FIFO */
+	txstatus.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum, txstatus.d32);
+
+	while (txstatus.b.txfspcavail > dwords &&
+	       dwc_ep->xfer_count < dwc_ep->xfer_len && dwc_ep->xfer_len != 0) {
+		/* Write the FIFO */
+		dwc_otg_ep_write_packet(core_if, dwc_ep, 0);
+
+		len = dwc_ep->xfer_len - dwc_ep->xfer_count;
+		if (len > dwc_ep->maxpacket) {
+			len = dwc_ep->maxpacket;
+		}
+
+		dwords = (len + 3) / 4;
+		txstatus.d32 =
+		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+		DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", epnum,
+			    txstatus.d32);
+	}
+
+	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum,
+		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts));
+
+	return 1;
+}
+/**
+ * This function does the setup for a data transfer for an EP and
+ * starts the transfer. For an IN transfer, the packets will be
+ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
+ * the packets are unloaded from the Rx FIFO in the ISR.  the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+
+void dwc_otg_ep_start_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	depctl_data_t depctl;
+	deptsiz_data_t deptsiz;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__);
+	DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
+		    "xfer_buff=%p start_xfer_buff=%p, total_len = %d\n",
+		    ep->num, (ep->is_in ? "IN" : "OUT"), ep->xfer_len,
+		    ep->xfer_count, ep->xfer_buff, ep->start_xfer_buff,
+		    ep->total_len);
+	/* IN endpoint */
+	if (ep->is_in == 1) {
+		dwc_otg_dev_in_ep_regs_t *in_regs =
+		    core_if->dev_if->in_ep_regs[ep->num];
+
+		gnptxsts_data_t gtxstatus;
+
+		gtxstatus.d32 =
+		    DWC_READ_REG32(&core_if->core_global_regs->gnptxsts);
+
+		if (core_if->en_multiple_tx_fifo == 0
+		    && gtxstatus.b.nptxqspcavail == 0 && !core_if->dma_enable) {
+#ifdef DEBUG
+			DWC_PRINTF("TX Queue Full (0x%0x)\n", gtxstatus.d32);
+#endif
+			return;
+		}
+
+		depctl.d32 = DWC_READ_REG32(&(in_regs->diepctl));
+		deptsiz.d32 = DWC_READ_REG32(&(in_regs->dieptsiz));
+
+		if (ep->maxpacket > ep->maxxfer / MAX_PKT_CNT)
+			ep->xfer_len += (ep->maxxfer < (ep->total_len - ep->xfer_len)) ?
+				ep->maxxfer : (ep->total_len - ep->xfer_len);
+		else
+			ep->xfer_len += (MAX_PKT_CNT * ep->maxpacket < (ep->total_len - ep->xfer_len)) ?
+				 MAX_PKT_CNT * ep->maxpacket : (ep->total_len - ep->xfer_len);
+
+
+		/* Zero Length Packet? */
+		if ((ep->xfer_len - ep->xfer_count) == 0) {
+			deptsiz.b.xfersize = 0;
+			deptsiz.b.pktcnt = 1;
+		} else {
+			/* Program the transfer size and packet count
+			 *      as follows: xfersize = N * maxpacket +
+			 *      short_packet pktcnt = N + (short_packet
+			 *      exist ? 1 : 0)
+			 */
+			deptsiz.b.xfersize = ep->xfer_len - ep->xfer_count;
+			deptsiz.b.pktcnt =
+			    (ep->xfer_len - ep->xfer_count - 1 +
+			     ep->maxpacket) / ep->maxpacket;
+			if (deptsiz.b.pktcnt > MAX_PKT_CNT) {
+				deptsiz.b.pktcnt = MAX_PKT_CNT;
+				deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
+			}
+			if (ep->type == DWC_OTG_EP_TYPE_ISOC)
+				deptsiz.b.mc = deptsiz.b.pktcnt;
+		}
+
+		/* Write the DMA register */
+		if (core_if->dma_enable) {
+			if (core_if->dma_desc_enable == 0) {
+				if (ep->type != DWC_OTG_EP_TYPE_ISOC)
+					deptsiz.b.mc = 1;
+				DWC_WRITE_REG32(&in_regs->dieptsiz,
+						deptsiz.d32);
+				DWC_WRITE_REG32(&(in_regs->diepdma),
+						(uint32_t) ep->dma_addr);
+			} else {
+#ifdef DWC_UTE_CFI
+				/* The descriptor chain should be already initialized by now */
+				if (ep->buff_mode != BM_STANDARD) {
+					DWC_WRITE_REG32(&in_regs->diepdma,
+							ep->descs_dma_addr);
+				} else {
+#endif
+					init_dma_desc_chain(core_if, ep);
+				/** DIEPDMAn Register write */
+					DWC_WRITE_REG32(&in_regs->diepdma,
+							ep->dma_desc_addr);
+#ifdef DWC_UTE_CFI
+				}
+#endif
+			}
+		} else {
+			DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
+			if (ep->type != DWC_OTG_EP_TYPE_ISOC) {
+				/**
+				 * Enable the Non-Periodic Tx FIFO empty interrupt,
+				 * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode,
+				 * the data will be written into the fifo by the ISR.
+				 */
+				if (core_if->en_multiple_tx_fifo == 0) {
+					intr_mask.b.nptxfempty = 1;
+					DWC_MODIFY_REG32
+					    (&core_if->core_global_regs->gintmsk,
+					     intr_mask.d32, intr_mask.d32);
+				} else {
+					/* Enable the Tx FIFO Empty Interrupt for this EP */
+					if (ep->xfer_len > 0) {
+						uint32_t fifoemptymsk = 0;
+						fifoemptymsk = 1 << ep->num;
+						DWC_MODIFY_REG32
+						    (&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+						     0, fifoemptymsk);
+
+					}
+				}
+			}  else {
+					 write_isoc_tx_fifo(core_if, ep);
+			}
+		}
+		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
+			depctl.b.nextep = core_if->nextep_seq[ep->num];
+
+		if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+			dsts_data_t dsts = {.d32 = 0};
+			if (ep->bInterval == 1) {
+				dsts.d32 =
+				    DWC_READ_REG32(&core_if->dev_if->
+						   dev_global_regs->dsts);
+				ep->frame_num = dsts.b.soffn + ep->bInterval;
+				if (ep->frame_num > 0x3FFF) {
+					ep->frm_overrun = 1;
+					ep->frame_num &= 0x3FFF;
+				} else
+					ep->frm_overrun = 0;
+				if (ep->frame_num & 0x1) {
+					depctl.b.setd1pid = 1;
+				} else {
+					depctl.b.setd0pid = 1;
+				}
+			}
+		}
+		/* EP enable, IN data in FIFO */
+		depctl.b.cnak = 1;
+		depctl.b.epena = 1;
+		DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
+
+	} else {
+		/* OUT endpoint */
+		dwc_otg_dev_out_ep_regs_t *out_regs =
+		    core_if->dev_if->out_ep_regs[ep->num];
+
+		depctl.d32 = DWC_READ_REG32(&(out_regs->doepctl));
+		deptsiz.d32 = DWC_READ_REG32(&(out_regs->doeptsiz));
+
+		if (!core_if->dma_desc_enable) {
+			if (ep->maxpacket > ep->maxxfer / MAX_PKT_CNT)
+				ep->xfer_len += (ep->maxxfer < (ep->total_len - ep->xfer_len)) ?
+				ep->maxxfer : (ep->total_len - ep->xfer_len);
+                else
+					ep->xfer_len += (MAX_PKT_CNT * ep->maxpacket < (ep->total_len
+					- ep->xfer_len)) ? MAX_PKT_CNT * ep->maxpacket : (ep->total_len - ep->xfer_len);
+		}
+
+		/* Program the transfer size and packet count as follows:
+		 *
+		 *      pktcnt = N
+		 *      xfersize = N * maxpacket
+		 */
+		if ((ep->xfer_len - ep->xfer_count) == 0) {
+			/* Zero Length Packet */
+			deptsiz.b.xfersize = ep->maxpacket;
+			deptsiz.b.pktcnt = 1;
+		} else {
+			deptsiz.b.pktcnt =
+			    (ep->xfer_len - ep->xfer_count +
+			     (ep->maxpacket - 1)) / ep->maxpacket;
+			if (deptsiz.b.pktcnt > MAX_PKT_CNT) {
+				deptsiz.b.pktcnt = MAX_PKT_CNT;
+			}
+			if (!core_if->dma_desc_enable) {
+				ep->xfer_len =
+					deptsiz.b.pktcnt * ep->maxpacket + ep->xfer_count;
+			}
+			deptsiz.b.xfersize = ep->xfer_len - ep->xfer_count;
+		}
+
+		DWC_DEBUGPL(DBG_PCDV, "ep%d xfersize=%d pktcnt=%d\n",
+			    ep->num, deptsiz.b.xfersize, deptsiz.b.pktcnt);
+
+		if (core_if->dma_enable) {
+			if (!core_if->dma_desc_enable) {
+				DWC_WRITE_REG32(&out_regs->doeptsiz,
+						deptsiz.d32);
+
+				DWC_WRITE_REG32(&(out_regs->doepdma),
+						(uint32_t) ep->dma_addr);
+			} else {
+#ifdef DWC_UTE_CFI
+				/* The descriptor chain should be already initialized by now */
+				if (ep->buff_mode != BM_STANDARD) {
+					DWC_WRITE_REG32(&out_regs->doepdma,
+							ep->descs_dma_addr);
+				} else {
+#endif
+					/** This is used for interrupt out transfers*/
+					if (!ep->xfer_len)
+						ep->xfer_len = ep->total_len;
+					init_dma_desc_chain(core_if, ep);
+
+					if (core_if->core_params->dev_out_nak) {
+						if (ep->type == DWC_OTG_EP_TYPE_BULK) {
+							deptsiz.b.pktcnt = (ep->total_len +
+								(ep->maxpacket - 1)) / ep->maxpacket;
+							deptsiz.b.xfersize = ep->total_len;
+							/* Remember initial value of doeptsiz */
+							core_if->start_doeptsiz_val[ep->num] = deptsiz.d32;
+							DWC_WRITE_REG32(&out_regs->doeptsiz,
+								deptsiz.d32);
+						}
+					}
+				/** DOEPDMAn Register write */
+					DWC_WRITE_REG32(&out_regs->doepdma,
+							ep->dma_desc_addr);
+#ifdef DWC_UTE_CFI
+				}
+#endif
+			}
+		} else {
+			DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
+		}
+
+		if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+			dsts_data_t dsts = {.d32 = 0};
+			if (ep->bInterval == 1) {
+				dsts.d32 =
+				    DWC_READ_REG32(&core_if->dev_if->
+						   dev_global_regs->dsts);
+				ep->frame_num = dsts.b.soffn + ep->bInterval;
+				if (ep->frame_num > 0x3FFF) {
+					ep->frm_overrun = 1;
+					ep->frame_num &= 0x3FFF;
+				} else
+					ep->frm_overrun = 0;
+
+				if (ep->frame_num & 0x1) {
+					depctl.b.setd1pid = 1;
+				} else {
+					depctl.b.setd0pid = 1;
+				}
+			}
+		}
+
+		/* EP enable */
+		depctl.b.cnak = 1;
+		depctl.b.epena = 1;
+
+		DWC_WRITE_REG32(&out_regs->doepctl, depctl.d32);
+
+		DWC_DEBUGPL(DBG_PCD, "DOEPCTL=%08x DOEPTSIZ=%08x\n",
+			    DWC_READ_REG32(&out_regs->doepctl),
+			    DWC_READ_REG32(&out_regs->doeptsiz));
+		DWC_DEBUGPL(DBG_PCD, "DAINTMSK=%08x GINTMSK=%08x\n",
+			    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->
+					   daintmsk),
+			    DWC_READ_REG32(&core_if->core_global_regs->
+					   gintmsk));
+
+		/* Timer is scheduling only for out bulk transfers for
+		 * "Device DDMA OUT NAK Enhancement" feature to inform user
+		 * about received data payload in case of timeout
+		 */
+		if (core_if->core_params->dev_out_nak) {
+			if (ep->type == DWC_OTG_EP_TYPE_BULK) {
+				core_if->ep_xfer_info[ep->num].core_if = core_if;
+				core_if->ep_xfer_info[ep->num].ep = ep;
+				core_if->ep_xfer_info[ep->num].state = 1;
+
+				/* Start a timer for this transfer. */
+				DWC_TIMER_SCHEDULE(core_if->ep_xfer_timer[ep->num], 10000);
+			}
+		}
+	}
+}
+
+/**
+ * This function setup a zero length transfer in Buffer DMA and
+ * Slave modes for usb requests with zero field set
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_ep_start_zl_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+
+	depctl_data_t depctl;
+	deptsiz_data_t deptsiz;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__);
+	DWC_PRINTF("zero length transfer is called\n");
+
+	/* IN endpoint */
+	if (ep->is_in == 1) {
+		dwc_otg_dev_in_ep_regs_t *in_regs =
+		    core_if->dev_if->in_ep_regs[ep->num];
+
+		depctl.d32 = DWC_READ_REG32(&(in_regs->diepctl));
+		deptsiz.d32 = DWC_READ_REG32(&(in_regs->dieptsiz));
+
+		deptsiz.b.xfersize = 0;
+		deptsiz.b.pktcnt = 1;
+
+		/* Write the DMA register */
+		if (core_if->dma_enable) {
+			if (core_if->dma_desc_enable == 0) {
+				deptsiz.b.mc = 1;
+				DWC_WRITE_REG32(&in_regs->dieptsiz,
+						deptsiz.d32);
+				DWC_WRITE_REG32(&(in_regs->diepdma),
+						(uint32_t) ep->dma_addr);
+			}
+		} else {
+			DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
+			/**
+			 * Enable the Non-Periodic Tx FIFO empty interrupt,
+			 * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode,
+			 * the data will be written into the fifo by the ISR.
+			 */
+			if (core_if->en_multiple_tx_fifo == 0) {
+				intr_mask.b.nptxfempty = 1;
+				DWC_MODIFY_REG32(&core_if->
+						 core_global_regs->gintmsk,
+						 intr_mask.d32, intr_mask.d32);
+			} else {
+				/* Enable the Tx FIFO Empty Interrupt for this EP */
+				if (ep->xfer_len > 0) {
+					uint32_t fifoemptymsk = 0;
+					fifoemptymsk = 1 << ep->num;
+					DWC_MODIFY_REG32(&core_if->
+							 dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+							 0, fifoemptymsk);
+				}
+			}
+		}
+
+		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
+			depctl.b.nextep = core_if->nextep_seq[ep->num];
+		/* EP enable, IN data in FIFO */
+		depctl.b.cnak = 1;
+		depctl.b.epena = 1;
+		DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
+
+	} else {
+		/* OUT endpoint */
+		dwc_otg_dev_out_ep_regs_t *out_regs =
+		    core_if->dev_if->out_ep_regs[ep->num];
+
+		depctl.d32 = DWC_READ_REG32(&(out_regs->doepctl));
+		deptsiz.d32 = DWC_READ_REG32(&(out_regs->doeptsiz));
+
+		/* Zero Length Packet */
+		deptsiz.b.xfersize = ep->maxpacket;
+		deptsiz.b.pktcnt = 1;
+
+		if (core_if->dma_enable) {
+			if (!core_if->dma_desc_enable) {
+				DWC_WRITE_REG32(&out_regs->doeptsiz,
+						deptsiz.d32);
+
+				DWC_WRITE_REG32(&(out_regs->doepdma),
+						(uint32_t) ep->dma_addr);
+			}
+		} else {
+			DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
+		}
+
+		/* EP enable */
+		depctl.b.cnak = 1;
+		depctl.b.epena = 1;
+
+		DWC_WRITE_REG32(&out_regs->doepctl, depctl.d32);
+
+	}
+}
+
+/**
+ * This function does the setup for a data transfer for EP0 and starts
+ * the transfer.  For an IN transfer, the packets will be loaded into
+ * the appropriate Tx FIFO in the ISR. For OUT transfers, the packets are
+ * unloaded from the Rx FIFO in the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP0 data.
+ */
+void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	depctl_data_t depctl;
+	deptsiz0_data_t deptsiz;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	dwc_otg_dev_dma_desc_t *dma_desc;
+
+	DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
+		    "xfer_buff=%p start_xfer_buff=%p \n",
+		    ep->num, (ep->is_in ? "IN" : "OUT"), ep->xfer_len,
+		    ep->xfer_count, ep->xfer_buff, ep->start_xfer_buff);
+
+	ep->total_len = ep->xfer_len;
+
+	/* IN endpoint */
+	if (ep->is_in == 1) {
+		dwc_otg_dev_in_ep_regs_t *in_regs =
+		    core_if->dev_if->in_ep_regs[0];
+
+		gnptxsts_data_t gtxstatus;
+
+		if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+			depctl.d32 = DWC_READ_REG32(&in_regs->diepctl);
+			if (depctl.b.epena)
+				return;
+		}
+
+		gtxstatus.d32 =
+		    DWC_READ_REG32(&core_if->core_global_regs->gnptxsts);
+
+		/* If dedicated FIFO every time flush fifo before enable ep*/
+		if (core_if->en_multiple_tx_fifo && core_if->snpsid >= OTG_CORE_REV_3_00a)
+			dwc_otg_flush_tx_fifo(core_if, ep->tx_fifo_num);
+
+		if (core_if->en_multiple_tx_fifo == 0
+		    && gtxstatus.b.nptxqspcavail == 0
+		    && !core_if->dma_enable) {
+#ifdef DEBUG
+			deptsiz.d32 = DWC_READ_REG32(&in_regs->dieptsiz);
+			DWC_DEBUGPL(DBG_PCD, "DIEPCTL0=%0x\n",
+				    DWC_READ_REG32(&in_regs->diepctl));
+			DWC_DEBUGPL(DBG_PCD, "DIEPTSIZ0=%0x (sz=%d, pcnt=%d)\n",
+				    deptsiz.d32,
+				    deptsiz.b.xfersize, deptsiz.b.pktcnt);
+			DWC_PRINTF("TX Queue or FIFO Full (0x%0x)\n",
+				   gtxstatus.d32);
+#endif
+			return;
+		}
+
+		depctl.d32 = DWC_READ_REG32(&in_regs->diepctl);
+		deptsiz.d32 = DWC_READ_REG32(&in_regs->dieptsiz);
+
+		/* Zero Length Packet? */
+		if (ep->xfer_len == 0) {
+			deptsiz.b.xfersize = 0;
+			deptsiz.b.pktcnt = 1;
+		} else {
+			/* Program the transfer size and packet count
+			 *      as follows: xfersize = N * maxpacket +
+			 *      short_packet pktcnt = N + (short_packet
+			 *      exist ? 1 : 0)
+			 */
+			if (ep->xfer_len > ep->maxpacket) {
+				ep->xfer_len = ep->maxpacket;
+				deptsiz.b.xfersize = ep->maxpacket;
+			} else {
+				deptsiz.b.xfersize = ep->xfer_len;
+			}
+			deptsiz.b.pktcnt = 1;
+
+		}
+		DWC_DEBUGPL(DBG_PCDV,
+			    "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
+			    ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt,
+			    deptsiz.d32);
+
+		/* Write the DMA register */
+		if (core_if->dma_enable) {
+			if (core_if->dma_desc_enable == 0) {
+				DWC_WRITE_REG32(&in_regs->dieptsiz,
+						deptsiz.d32);
+
+				DWC_WRITE_REG32(&(in_regs->diepdma),
+						(uint32_t) ep->dma_addr);
+			} else {
+				dma_desc = core_if->dev_if->in_desc_addr;
+
+				/** DMA Descriptor Setup */
+				dma_desc->status.b.bs = BS_HOST_BUSY;
+				dma_desc->status.b.l = 1;
+				dma_desc->status.b.ioc = 1;
+				dma_desc->status.b.sp =
+				    (ep->xfer_len == ep->maxpacket) ? 0 : 1;
+				dma_desc->status.b.bytes = ep->xfer_len;
+				dma_desc->buf = ep->dma_addr;
+				dma_desc->status.b.sts = 0;
+				dma_desc->status.b.bs = BS_HOST_READY;
+
+				/** DIEPDMA0 Register write */
+				DWC_WRITE_REG32(&in_regs->diepdma,
+						core_if->
+						dev_if->dma_in_desc_addr);
+			}
+		} else {
+			DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
+		}
+
+		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
+			depctl.b.nextep = core_if->nextep_seq[ep->num];
+		/* EP enable, IN data in FIFO */
+		depctl.b.cnak = 1;
+		depctl.b.epena = 1;
+		DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
+
+		/**
+		 * Enable the Non-Periodic Tx FIFO empty interrupt, the
+		 * data will be written into the fifo by the ISR.
+		 */
+		if (!core_if->dma_enable) {
+			if (core_if->en_multiple_tx_fifo == 0) {
+				intr_mask.b.nptxfempty = 1;
+				DWC_MODIFY_REG32(&core_if->
+						 core_global_regs->gintmsk,
+						 intr_mask.d32, intr_mask.d32);
+			} else {
+				/* Enable the Tx FIFO Empty Interrupt for this EP */
+				if (ep->xfer_len > 0) {
+					uint32_t fifoemptymsk = 0;
+					fifoemptymsk |= 1 << ep->num;
+					DWC_MODIFY_REG32(&core_if->
+							 dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+							 0, fifoemptymsk);
+				}
+			}
+		}
+	} else {
+		/* OUT endpoint */
+		dwc_otg_dev_out_ep_regs_t *out_regs =
+		    core_if->dev_if->out_ep_regs[0];
+
+		depctl.d32 = DWC_READ_REG32(&out_regs->doepctl);
+		deptsiz.d32 = DWC_READ_REG32(&out_regs->doeptsiz);
+
+		/* Program the transfer size and packet count as follows:
+		 *      xfersize = N * (maxpacket + 4 - (maxpacket % 4))
+		 *      pktcnt = N                                                                                      */
+		/* Zero Length Packet */
+		deptsiz.b.xfersize = ep->maxpacket;
+		deptsiz.b.pktcnt = 1;
+		if (core_if->snpsid >= OTG_CORE_REV_3_00a)
+			deptsiz.b.supcnt = 3;
+
+		DWC_DEBUGPL(DBG_PCDV, "len=%d  xfersize=%d pktcnt=%d\n",
+			    ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt);
+
+		if (core_if->dma_enable) {
+			if (!core_if->dma_desc_enable) {
+				DWC_WRITE_REG32(&out_regs->doeptsiz,
+						deptsiz.d32);
+
+				DWC_WRITE_REG32(&(out_regs->doepdma),
+						(uint32_t) ep->dma_addr);
+			} else {
+				dma_desc = core_if->dev_if->out_desc_addr;
+
+				/** DMA Descriptor Setup */
+				dma_desc->status.b.bs = BS_HOST_BUSY;
+				if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+					dma_desc->status.b.mtrf = 0;
+					dma_desc->status.b.sr = 0;
+				}
+				dma_desc->status.b.l = 1;
+				dma_desc->status.b.ioc = 1;
+				dma_desc->status.b.bytes = ep->maxpacket;
+				dma_desc->buf = ep->dma_addr;
+				dma_desc->status.b.sts = 0;
+				dma_desc->status.b.bs = BS_HOST_READY;
+
+				/** DOEPDMA0 Register write */
+				DWC_WRITE_REG32(&out_regs->doepdma,
+						core_if->dev_if->
+						dma_out_desc_addr);
+			}
+		} else {
+			DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
+		}
+
+		/* EP enable */
+		depctl.b.cnak = 1;
+		depctl.b.epena = 1;
+		DWC_WRITE_REG32(&(out_regs->doepctl), depctl.d32);
+	}
+}
+
+/**
+ * This function continues control IN transfers started by
+ * dwc_otg_ep0_start_transfer, when the transfer does not fit in a
+ * single packet.  NOTE: The DIEPCTL0/DOEPCTL0 registers only have one
+ * bit for the packet count.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP0 data.
+ */
+void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	depctl_data_t depctl;
+	deptsiz0_data_t deptsiz;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	dwc_otg_dev_dma_desc_t *dma_desc;
+
+	if (ep->is_in == 1) {
+		dwc_otg_dev_in_ep_regs_t *in_regs =
+		    core_if->dev_if->in_ep_regs[0];
+		gnptxsts_data_t tx_status = {.d32 = 0 };
+
+		tx_status.d32 =
+		    DWC_READ_REG32(&core_if->core_global_regs->gnptxsts);
+		/** @todo Should there be check for room in the Tx
+		 * Status Queue.  If not remove the code above this comment. */
+
+		depctl.d32 = DWC_READ_REG32(&in_regs->diepctl);
+		deptsiz.d32 = DWC_READ_REG32(&in_regs->dieptsiz);
+
+		/* Program the transfer size and packet count
+		 *      as follows: xfersize = N * maxpacket +
+		 *      short_packet pktcnt = N + (short_packet
+		 *      exist ? 1 : 0)
+		 */
+
+		if (core_if->dma_desc_enable == 0) {
+			deptsiz.b.xfersize =
+			    (ep->total_len - ep->xfer_count) >
+			    ep->maxpacket ? ep->maxpacket : (ep->total_len -
+							     ep->xfer_count);
+			deptsiz.b.pktcnt = 1;
+			if (core_if->dma_enable == 0) {
+				ep->xfer_len += deptsiz.b.xfersize;
+			} else {
+				ep->xfer_len = deptsiz.b.xfersize;
+			}
+			DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
+		} else {
+			ep->xfer_len =
+			    (ep->total_len - ep->xfer_count) >
+			    ep->maxpacket ? ep->maxpacket : (ep->total_len -
+							     ep->xfer_count);
+
+			dma_desc = core_if->dev_if->in_desc_addr;
+
+			/** DMA Descriptor Setup */
+			dma_desc->status.b.bs = BS_HOST_BUSY;
+			dma_desc->status.b.l = 1;
+			dma_desc->status.b.ioc = 1;
+			dma_desc->status.b.sp =
+			    (ep->xfer_len == ep->maxpacket) ? 0 : 1;
+			dma_desc->status.b.bytes = ep->xfer_len;
+			dma_desc->buf = ep->dma_addr;
+			dma_desc->status.b.sts = 0;
+			dma_desc->status.b.bs = BS_HOST_READY;
+
+			/** DIEPDMA0 Register write */
+			DWC_WRITE_REG32(&in_regs->diepdma,
+					core_if->dev_if->dma_in_desc_addr);
+		}
+
+		DWC_DEBUGPL(DBG_PCDV,
+			    "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
+			    ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt,
+			    deptsiz.d32);
+
+		/* Write the DMA register */
+		if (core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) {
+			if (core_if->dma_desc_enable == 0)
+				DWC_WRITE_REG32(&(in_regs->diepdma),
+						(uint32_t) ep->dma_addr);
+		}
+		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
+			depctl.b.nextep = core_if->nextep_seq[ep->num];
+		/* EP enable, IN data in FIFO */
+		depctl.b.cnak = 1;
+		depctl.b.epena = 1;
+		DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
+
+		/**
+		 * Enable the Non-Periodic Tx FIFO empty interrupt, the
+		 * data will be written into the fifo by the ISR.
+		 */
+		if (!core_if->dma_enable) {
+			if (core_if->en_multiple_tx_fifo == 0) {
+				/* First clear it from GINTSTS */
+				intr_mask.b.nptxfempty = 1;
+				DWC_MODIFY_REG32(&core_if->
+						 core_global_regs->gintmsk,
+						 intr_mask.d32, intr_mask.d32);
+
+			} else {
+				/* Enable the Tx FIFO Empty Interrupt for this EP */
+				if (ep->xfer_len > 0) {
+					uint32_t fifoemptymsk = 0;
+					fifoemptymsk |= 1 << ep->num;
+					DWC_MODIFY_REG32(&core_if->
+							 dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+							 0, fifoemptymsk);
+				}
+			}
+		}
+	} else {
+		dwc_otg_dev_out_ep_regs_t *out_regs =
+		    core_if->dev_if->out_ep_regs[0];
+
+		depctl.d32 = DWC_READ_REG32(&out_regs->doepctl);
+		deptsiz.d32 = DWC_READ_REG32(&out_regs->doeptsiz);
+
+		/* Program the transfer size and packet count
+		 *      as follows: xfersize = N * maxpacket +
+		 *      short_packet pktcnt = N + (short_packet
+		 *      exist ? 1 : 0)
+		 */
+		deptsiz.b.xfersize = ep->maxpacket;
+		deptsiz.b.pktcnt = 1;
+
+		if (core_if->dma_desc_enable == 0) {
+			DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
+		} else {
+			dma_desc = core_if->dev_if->out_desc_addr;
+
+			/** DMA Descriptor Setup */
+			dma_desc->status.b.bs = BS_HOST_BUSY;
+			dma_desc->status.b.l = 1;
+			dma_desc->status.b.ioc = 1;
+			dma_desc->status.b.bytes = ep->maxpacket;
+			dma_desc->buf = ep->dma_addr;
+			dma_desc->status.b.sts = 0;
+			dma_desc->status.b.bs = BS_HOST_READY;
+
+			/** DOEPDMA0 Register write */
+			DWC_WRITE_REG32(&out_regs->doepdma,
+					core_if->dev_if->dma_out_desc_addr);
+		}
+
+		DWC_DEBUGPL(DBG_PCDV,
+			    "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
+			    ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt,
+			    deptsiz.d32);
+
+		/* Write the DMA register */
+		if (core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) {
+			if (core_if->dma_desc_enable == 0)
+				DWC_WRITE_REG32(&(out_regs->doepdma),
+						(uint32_t) ep->dma_addr);
+
+		}
+
+		/* EP enable, IN data in FIFO */
+		depctl.b.cnak = 1;
+		depctl.b.epena = 1;
+		DWC_WRITE_REG32(&out_regs->doepctl, depctl.d32);
+
+	}
+}
+
+#ifdef DEBUG
+void dump_msg(const u8 * buf, unsigned int length)
+{
+	unsigned int start, num, i;
+	char line[52], *p;
+
+	if (length >= 512)
+		return;
+	start = 0;
+	while (length > 0) {
+		num = length < 16u ? length : 16u;
+		p = line;
+		for (i = 0; i < num; ++i) {
+			if (i == 8)
+				*p++ = ' ';
+			DWC_SPRINTF(p, " %02x", buf[i]);
+			p += 3;
+		}
+		*p = 0;
+		DWC_PRINTF("%6x: %s\n", start, line);
+		buf += num;
+		start += num;
+		length -= num;
+	}
+}
+#else
+static inline void dump_msg(const u8 * buf, unsigned int length)
+{
+}
+#endif
+
+/**
+ * This function writes a packet into the Tx FIFO associated with the
+ * EP. For non-periodic EPs the non-periodic Tx FIFO is written.  For
+ * periodic EPs the periodic Tx FIFO associated with the EP is written
+ * with all packets for the next micro-frame.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to write packet for.
+ * @param dma Indicates if DMA is being used.
+ */
+void dwc_otg_ep_write_packet(dwc_otg_core_if_t * core_if, dwc_ep_t * ep,
+			     int dma)
+{
+	/**
+	 * The buffer is padded to DWORD on a per packet basis in
+	 * slave/dma mode if the MPS is not DWORD aligned. The last
+	 * packet, if short, is also padded to a multiple of DWORD.
+	 *
+	 * ep->xfer_buff always starts DWORD aligned in memory and is a
+	 * multiple of DWORD in length
+	 *
+	 * ep->xfer_len can be any number of bytes
+	 *
+	 * ep->xfer_count is a multiple of ep->maxpacket until the last
+	 *	packet
+	 *
+	 * FIFO access is DWORD */
+
+	uint32_t i;
+	uint32_t byte_count;
+	uint32_t dword_count;
+	uint32_t *fifo;
+	uint32_t *data_buff = (uint32_t *) ep->xfer_buff;
+
+	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p)\n", __func__, core_if,
+		    ep);
+	if (ep->xfer_count >= ep->xfer_len) {
+		DWC_WARN("%s() No data for EP%d!!!\n", __func__, ep->num);
+		return;
+	}
+
+	/* Find the byte length of the packet either short packet or MPS */
+	if ((ep->xfer_len - ep->xfer_count) < ep->maxpacket) {
+		byte_count = ep->xfer_len - ep->xfer_count;
+	} else {
+		byte_count = ep->maxpacket;
+	}
+
+	/* Find the DWORD length, padded by extra bytes as neccessary if MPS
+	 * is not a multiple of DWORD */
+	dword_count = (byte_count + 3) / 4;
+
+#ifdef VERBOSE
+	dump_msg(ep->xfer_buff, byte_count);
+#endif
+
+	/**@todo NGS Where are the Periodic Tx FIFO addresses
+	 * intialized?	What should this be? */
+
+	fifo = core_if->data_fifo[ep->num];
+
+	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "fifo=%p buff=%p *p=%08x bc=%d\n",
+		    fifo, data_buff, *data_buff, byte_count);
+
+	if (!dma) {
+		for (i = 0; i < dword_count; i++, data_buff++) {
+			DWC_WRITE_REG32(fifo, *data_buff);
+		}
+	}
+
+	ep->xfer_count += byte_count;
+	ep->xfer_buff += byte_count;
+	ep->dma_addr += byte_count;
+}
+
+/**
+ * Set the EP STALL.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to set the stall on.
+ */
+void dwc_otg_ep_set_stall(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	depctl_data_t depctl;
+	volatile uint32_t *depctl_addr;
+
+	DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, ep->num,
+		    (ep->is_in ? "IN" : "OUT"));
+
+	if (ep->is_in == 1) {
+		depctl_addr = &(core_if->dev_if->in_ep_regs[ep->num]->diepctl);
+		depctl.d32 = DWC_READ_REG32(depctl_addr);
+
+		/* set the disable and stall bits */
+		if (depctl.b.epena) {
+			depctl.b.epdis = 1;
+		}
+		depctl.b.stall = 1;
+		DWC_WRITE_REG32(depctl_addr, depctl.d32);
+	} else {
+		depctl_addr = &(core_if->dev_if->out_ep_regs[ep->num]->doepctl);
+		depctl.d32 = DWC_READ_REG32(depctl_addr);
+
+		/* set the stall bit */
+		depctl.b.stall = 1;
+		DWC_WRITE_REG32(depctl_addr, depctl.d32);
+	}
+
+	DWC_DEBUGPL(DBG_PCD, "DEPCTL=%0x\n", DWC_READ_REG32(depctl_addr));
+
+	return;
+}
+
+/**
+ * Clear the EP STALL.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to clear stall from.
+ */
+void dwc_otg_ep_clear_stall(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	depctl_data_t depctl;
+	volatile uint32_t *depctl_addr;
+
+	DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, ep->num,
+		    (ep->is_in ? "IN" : "OUT"));
+
+	if (ep->is_in == 1) {
+		depctl_addr = &(core_if->dev_if->in_ep_regs[ep->num]->diepctl);
+	} else {
+		depctl_addr = &(core_if->dev_if->out_ep_regs[ep->num]->doepctl);
+	}
+
+	depctl.d32 = DWC_READ_REG32(depctl_addr);
+
+	/* clear the stall bits */
+	depctl.b.stall = 0;
+
+	/*
+	 * USB Spec 9.4.5: For endpoints using data toggle, regardless
+	 * of whether an endpoint has the Halt feature set, a
+	 * ClearFeature(ENDPOINT_HALT) request always results in the
+	 * data toggle being reinitialized to DATA0.
+	 */
+	if (ep->type == DWC_OTG_EP_TYPE_INTR ||
+	    ep->type == DWC_OTG_EP_TYPE_BULK) {
+		depctl.b.setd0pid = 1;	/* DATA0 */
+	}
+
+	DWC_WRITE_REG32(depctl_addr, depctl.d32);
+	DWC_DEBUGPL(DBG_PCD, "DEPCTL=%0x\n", DWC_READ_REG32(depctl_addr));
+	return;
+}
+
+/**
+ * This function reads a packet from the Rx FIFO into the destination
+ * buffer. To read SETUP data use dwc_otg_read_setup_packet.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dest	  Destination buffer for the packet.
+ * @param bytes  Number of bytes to copy to the destination.
+ */
+void dwc_otg_read_packet(dwc_otg_core_if_t * core_if,
+			 uint8_t * dest, uint16_t bytes)
+{
+	int i;
+	int word_count = (bytes + 3) / 4;
+
+	volatile uint32_t *fifo = core_if->data_fifo[0];
+	uint32_t *data_buff = (uint32_t *) dest;
+
+	/**
+	 * @todo Account for the case where _dest is not dword aligned. This
+	 * requires reading data from the FIFO into a uint32_t temp buffer,
+	 * then moving it into the data buffer.
+	 */
+
+	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p,%d)\n", __func__,
+		    core_if, dest, bytes);
+
+	for (i = 0; i < word_count; i++, data_buff++) {
+		*data_buff = DWC_READ_REG32(fifo);
+	}
+
+	return;
+}
+
+/**
+ * This functions reads the device registers and prints them
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_dev_registers(dwc_otg_core_if_t * core_if)
+{
+	int i;
+	volatile uint32_t *addr;
+
+	DWC_PRINTF("Device Global Registers\n");
+	addr = &core_if->dev_if->dev_global_regs->dcfg;
+	DWC_PRINTF("DCFG		 @0x%08lX : 0x%08X\n",
+		   (unsigned long)addr, DWC_READ_REG32(addr));
+	addr = &core_if->dev_if->dev_global_regs->dctl;
+	DWC_PRINTF("DCTL		 @0x%08lX : 0x%08X\n",
+		   (unsigned long)addr, DWC_READ_REG32(addr));
+	addr = &core_if->dev_if->dev_global_regs->dsts;
+	DWC_PRINTF("DSTS		 @0x%08lX : 0x%08X\n",
+		   (unsigned long)addr, DWC_READ_REG32(addr));
+	addr = &core_if->dev_if->dev_global_regs->diepmsk;
+	DWC_PRINTF("DIEPMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->dev_if->dev_global_regs->doepmsk;
+	DWC_PRINTF("DOEPMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->dev_if->dev_global_regs->daint;
+	DWC_PRINTF("DAINT	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->dev_if->dev_global_regs->daintmsk;
+	DWC_PRINTF("DAINTMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->dev_if->dev_global_regs->dtknqr1;
+	DWC_PRINTF("DTKNQR1	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	if (core_if->hwcfg2.b.dev_token_q_depth > 6) {
+		addr = &core_if->dev_if->dev_global_regs->dtknqr2;
+		DWC_PRINTF("DTKNQR2	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+	}
+
+	addr = &core_if->dev_if->dev_global_regs->dvbusdis;
+	DWC_PRINTF("DVBUSID	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+
+	addr = &core_if->dev_if->dev_global_regs->dvbuspulse;
+	DWC_PRINTF("DVBUSPULSE	@0x%08lX : 0x%08X\n",
+		   (unsigned long)addr, DWC_READ_REG32(addr));
+
+	addr = &core_if->dev_if->dev_global_regs->dtknqr3_dthrctl;
+	DWC_PRINTF("DTKNQR3_DTHRCTL	 @0x%08lX : 0x%08X\n",
+		   (unsigned long)addr, DWC_READ_REG32(addr));
+
+	if (core_if->hwcfg2.b.dev_token_q_depth > 22) {
+		addr = &core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk;
+		DWC_PRINTF("DTKNQR4	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+	}
+
+	addr = &core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk;
+	DWC_PRINTF("FIFOEMPMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+
+	if (core_if->hwcfg2.b.multi_proc_int) {
+
+		addr = &core_if->dev_if->dev_global_regs->deachint;
+		DWC_PRINTF("DEACHINT	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->dev_if->dev_global_regs->deachintmsk;
+		DWC_PRINTF("DEACHINTMSK	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+
+		for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+			addr =
+			    &core_if->dev_if->
+			    dev_global_regs->diepeachintmsk[i];
+			DWC_PRINTF("DIEPEACHINTMSK[%d]	 @0x%08lX : 0x%08X\n",
+				   i, (unsigned long)addr,
+				   DWC_READ_REG32(addr));
+		}
+
+		for (i = 0; i <= core_if->dev_if->num_out_eps; i++) {
+			addr =
+			    &core_if->dev_if->
+			    dev_global_regs->doepeachintmsk[i];
+			DWC_PRINTF("DOEPEACHINTMSK[%d]	 @0x%08lX : 0x%08X\n",
+				   i, (unsigned long)addr,
+				   DWC_READ_REG32(addr));
+		}
+	}
+
+	for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+		DWC_PRINTF("Device IN EP %d Registers\n", i);
+		addr = &core_if->dev_if->in_ep_regs[i]->diepctl;
+		DWC_PRINTF("DIEPCTL	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->dev_if->in_ep_regs[i]->diepint;
+		DWC_PRINTF("DIEPINT	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->dev_if->in_ep_regs[i]->dieptsiz;
+		DWC_PRINTF("DIETSIZ	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->dev_if->in_ep_regs[i]->diepdma;
+		DWC_PRINTF("DIEPDMA	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->dev_if->in_ep_regs[i]->dtxfsts;
+		DWC_PRINTF("DTXFSTS	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->dev_if->in_ep_regs[i]->diepdmab;
+		DWC_PRINTF("DIEPDMAB	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, 0 /*DWC_READ_REG32(addr) */ );
+	}
+
+	for (i = 0; i <= core_if->dev_if->num_out_eps; i++) {
+		DWC_PRINTF("Device OUT EP %d Registers\n", i);
+		addr = &core_if->dev_if->out_ep_regs[i]->doepctl;
+		DWC_PRINTF("DOEPCTL	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->dev_if->out_ep_regs[i]->doepint;
+		DWC_PRINTF("DOEPINT	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->dev_if->out_ep_regs[i]->doeptsiz;
+		DWC_PRINTF("DOETSIZ	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->dev_if->out_ep_regs[i]->doepdma;
+		DWC_PRINTF("DOEPDMA	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		if (core_if->dma_enable) {	/* Don't access this register in SLAVE mode */
+			addr = &core_if->dev_if->out_ep_regs[i]->doepdmab;
+			DWC_PRINTF("DOEPDMAB	 @0x%08lX : 0x%08X\n",
+				   (unsigned long)addr, DWC_READ_REG32(addr));
+		}
+
+	}
+}
+
+/**
+ * This functions reads the SPRAM and prints its content
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_spram(dwc_otg_core_if_t * core_if)
+{
+	volatile uint8_t *addr, *start_addr, *end_addr;
+
+	DWC_PRINTF("SPRAM Data:\n");
+	start_addr = (void *)core_if->core_global_regs;
+	DWC_PRINTF("Base Address: 0x%8lX\n", (unsigned long)start_addr);
+	start_addr += 0x00028000;
+	end_addr = (void *)core_if->core_global_regs;
+	end_addr += 0x000280e0;
+
+	for (addr = start_addr; addr < end_addr; addr += 16) {
+		DWC_PRINTF
+		    ("0x%8lX:\t%2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X\n",
+		     (unsigned long)addr, addr[0], addr[1], addr[2], addr[3],
+		     addr[4], addr[5], addr[6], addr[7], addr[8], addr[9],
+		     addr[10], addr[11], addr[12], addr[13], addr[14], addr[15]
+		    );
+	}
+
+	return;
+}
+
+/**
+ * This function reads the host registers and prints them
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_host_registers(dwc_otg_core_if_t * core_if)
+{
+	int i;
+	volatile uint32_t *addr;
+
+	DWC_PRINTF("Host Global Registers\n");
+	addr = &core_if->host_if->host_global_regs->hcfg;
+	DWC_PRINTF("HCFG		 @0x%08lX : 0x%08X\n",
+		   (unsigned long)addr, DWC_READ_REG32(addr));
+	addr = &core_if->host_if->host_global_regs->hfir;
+	DWC_PRINTF("HFIR		 @0x%08lX : 0x%08X\n",
+		   (unsigned long)addr, DWC_READ_REG32(addr));
+	addr = &core_if->host_if->host_global_regs->hfnum;
+	DWC_PRINTF("HFNUM	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->host_if->host_global_regs->hptxsts;
+	DWC_PRINTF("HPTXSTS	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->host_if->host_global_regs->haint;
+	DWC_PRINTF("HAINT	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->host_if->host_global_regs->haintmsk;
+	DWC_PRINTF("HAINTMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	if (core_if->dma_desc_enable) {
+		addr = &core_if->host_if->host_global_regs->hflbaddr;
+		DWC_PRINTF("HFLBADDR	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+	}
+
+	addr = core_if->host_if->hprt0;
+	DWC_PRINTF("HPRT0	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+
+	for (i = 0; i < core_if->core_params->host_channels; i++) {
+		DWC_PRINTF("Host Channel %d Specific Registers\n", i);
+		addr = &core_if->host_if->hc_regs[i]->hcchar;
+		DWC_PRINTF("HCCHAR	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->host_if->hc_regs[i]->hcsplt;
+		DWC_PRINTF("HCSPLT	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->host_if->hc_regs[i]->hcint;
+		DWC_PRINTF("HCINT	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->host_if->hc_regs[i]->hcintmsk;
+		DWC_PRINTF("HCINTMSK	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->host_if->hc_regs[i]->hctsiz;
+		DWC_PRINTF("HCTSIZ	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		addr = &core_if->host_if->hc_regs[i]->hcdma;
+		DWC_PRINTF("HCDMA	 @0x%08lX : 0x%08X\n",
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+		if (core_if->dma_desc_enable) {
+			addr = &core_if->host_if->hc_regs[i]->hcdmab;
+			DWC_PRINTF("HCDMAB	 @0x%08lX : 0x%08X\n",
+				   (unsigned long)addr, DWC_READ_REG32(addr));
+		}
+
+	}
+	return;
+}
+
+/**
+ * This function reads the core global registers and prints them
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_global_registers(dwc_otg_core_if_t * core_if)
+{
+	int i, ep_num;
+	volatile uint32_t *addr;
+	char *txfsiz;
+
+	DWC_PRINTF("Core Global Registers\n");
+	addr = &core_if->core_global_regs->gotgctl;
+	DWC_PRINTF("GOTGCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gotgint;
+	DWC_PRINTF("GOTGINT	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gahbcfg;
+	DWC_PRINTF("GAHBCFG	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gusbcfg;
+	DWC_PRINTF("GUSBCFG	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->grstctl;
+	DWC_PRINTF("GRSTCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gintsts;
+	DWC_PRINTF("GINTSTS	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gintmsk;
+	DWC_PRINTF("GINTMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->grxstsr;
+	DWC_PRINTF("GRXSTSR	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->grxfsiz;
+	DWC_PRINTF("GRXFSIZ	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gnptxfsiz;
+	DWC_PRINTF("GNPTXFSIZ @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gnptxsts;
+	DWC_PRINTF("GNPTXSTS	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gi2cctl;
+	DWC_PRINTF("GI2CCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gpvndctl;
+	DWC_PRINTF("GPVNDCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->ggpio;
+	DWC_PRINTF("GGPIO	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->guid;
+	DWC_PRINTF("GUID		 @0x%08lX : 0x%08X\n",
+		   (unsigned long)addr, DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gsnpsid;
+	DWC_PRINTF("GSNPSID	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->ghwcfg1;
+	DWC_PRINTF("GHWCFG1	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->ghwcfg2;
+	DWC_PRINTF("GHWCFG2	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->ghwcfg3;
+	DWC_PRINTF("GHWCFG3	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->ghwcfg4;
+	DWC_PRINTF("GHWCFG4	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->glpmcfg;
+	DWC_PRINTF("GLPMCFG	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gpwrdn;
+	DWC_PRINTF("GPWRDN	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->gdfifocfg;
+	DWC_PRINTF("GDFIFOCFG	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+	addr = &core_if->core_global_regs->adpctl;
+	DWC_PRINTF("ADPCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   dwc_otg_adp_read_reg(core_if));
+	addr = &core_if->core_global_regs->hptxfsiz;
+	DWC_PRINTF("HPTXFSIZ	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+
+	if (core_if->en_multiple_tx_fifo == 0) {
+		ep_num = core_if->hwcfg4.b.num_dev_perio_in_ep;
+		txfsiz = "DPTXFSIZ";
+	} else {
+		ep_num = core_if->hwcfg4.b.num_in_eps;
+		txfsiz = "DIENPTXF";
+	}
+	for (i = 0; i < ep_num; i++) {
+		addr = &core_if->core_global_regs->dtxfsiz[i];
+		DWC_PRINTF("%s[%d] @0x%08lX : 0x%08X\n", txfsiz, i + 1,
+			   (unsigned long)addr, DWC_READ_REG32(addr));
+	}
+	addr = core_if->pcgcctl;
+	DWC_PRINTF("PCGCCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
+		   DWC_READ_REG32(addr));
+}
+
+/**
+ * Flush a Tx FIFO.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param num Tx FIFO to flush.
+ */
+void dwc_otg_flush_tx_fifo(dwc_otg_core_if_t * core_if, const int num)
+{
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	volatile grstctl_t greset = {.d32 = 0 };
+	int count = 0;
+
+	DWC_DEBUGPL((DBG_CIL | DBG_PCDV), "Flush Tx FIFO %d\n", num);
+
+	greset.b.txfflsh = 1;
+	greset.b.txfnum = num;
+	DWC_WRITE_REG32(&global_regs->grstctl, greset.d32);
+
+	do {
+		greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
+		if (++count > 10000) {
+			DWC_WARN("%s() HANG! GRSTCTL=%0x GNPTXSTS=0x%08x\n",
+				 __func__, greset.d32,
+				 DWC_READ_REG32(&global_regs->gnptxsts));
+			break;
+		}
+		dwc_udelay(1);
+	} while (greset.b.txfflsh == 1);
+
+	/* Wait for 3 PHY Clocks */
+	dwc_udelay(1);
+}
+
+/**
+ * Flush Rx FIFO.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_flush_rx_fifo(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	volatile grstctl_t greset = {.d32 = 0 };
+	int count = 0;
+
+	DWC_DEBUGPL((DBG_CIL | DBG_PCDV), "%s\n", __func__);
+	/*
+	 *
+	 */
+	greset.b.rxfflsh = 1;
+	DWC_WRITE_REG32(&global_regs->grstctl, greset.d32);
+
+	do {
+		greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
+		if (++count > 10000) {
+			DWC_WARN("%s() HANG! GRSTCTL=%0x\n", __func__,
+				 greset.d32);
+			break;
+		}
+		dwc_udelay(1);
+	} while (greset.b.rxfflsh == 1);
+
+	/* Wait for 3 PHY Clocks */
+	dwc_udelay(1);
+}
+
+/**
+ * Do core a soft reset of the core.  Be careful with this because it
+ * resets all the internal state machines of the core.
+ */
+void dwc_otg_core_reset(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	volatile grstctl_t greset = {.d32 = 0 };
+	int count = 0;
+
+	DWC_DEBUGPL(DBG_CILV, "%s\n", __func__);
+	/* Wait for AHB master IDLE state. */
+	do {
+		dwc_udelay(10);
+		greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
+		if (++count > 100000) {
+			DWC_WARN("%s() HANG! AHB Idle GRSTCTL=%0x\n", __func__,
+				 greset.d32);
+			return;
+		}
+	}
+	while (greset.b.ahbidle == 0);
+
+	/* Core Soft Reset */
+	count = 0;
+	greset.b.csftrst = 1;
+	DWC_WRITE_REG32(&global_regs->grstctl, greset.d32);
+	do {
+		greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
+		if (++count > 10000) {
+			DWC_WARN("%s() HANG! Soft Reset GRSTCTL=%0x\n",
+				 __func__, greset.d32);
+			break;
+		}
+		dwc_udelay(1);
+	}
+	while (greset.b.csftrst == 1);
+
+	/* Wait for 3 PHY Clocks */
+	dwc_mdelay(100);
+}
+
+uint8_t dwc_otg_is_device_mode(dwc_otg_core_if_t * _core_if)
+{
+	return (dwc_otg_mode(_core_if) != DWC_HOST_MODE);
+}
+
+uint8_t dwc_otg_is_host_mode(dwc_otg_core_if_t * _core_if)
+{
+	return (dwc_otg_mode(_core_if) == DWC_HOST_MODE);
+}
+
+/**
+ * Register HCD callbacks. The callbacks are used to start and stop
+ * the HCD for interrupt processing.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param cb the HCD callback structure.
+ * @param p pointer to be passed to callback function (usb_hcd*).
+ */
+void dwc_otg_cil_register_hcd_callbacks(dwc_otg_core_if_t * core_if,
+					dwc_otg_cil_callbacks_t * cb, void *p)
+{
+	core_if->hcd_cb = cb;
+	cb->p = p;
+}
+
+/**
+ * Register PCD callbacks. The callbacks are used to start and stop
+ * the PCD for interrupt processing.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param cb the PCD callback structure.
+ * @param p pointer to be passed to callback function (pcd*).
+ */
+void dwc_otg_cil_register_pcd_callbacks(dwc_otg_core_if_t * core_if,
+					dwc_otg_cil_callbacks_t * cb, void *p)
+{
+	core_if->pcd_cb = cb;
+	cb->p = p;
+}
+
+#ifdef DWC_EN_ISOC
+
+/**
+ * This function writes isoc data per 1 (micro)frame into tx fifo
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void write_isoc_frame_data(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	dwc_otg_dev_in_ep_regs_t *ep_regs;
+	dtxfsts_data_t txstatus = {.d32 = 0 };
+	uint32_t len = 0;
+	uint32_t dwords;
+
+	ep->xfer_len = ep->data_per_frame;
+	ep->xfer_count = 0;
+
+	ep_regs = core_if->dev_if->in_ep_regs[ep->num];
+
+	len = ep->xfer_len - ep->xfer_count;
+
+	if (len > ep->maxpacket) {
+		len = ep->maxpacket;
+	}
+
+	dwords = (len + 3) / 4;
+
+	/* While there is space in the queue and space in the FIFO and
+	 * More data to tranfer, Write packets to the Tx FIFO */
+	txstatus.d32 =
+	    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[ep->num]->dtxfsts);
+	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", ep->num, txstatus.d32);
+
+	while (txstatus.b.txfspcavail > dwords &&
+	       ep->xfer_count < ep->xfer_len && ep->xfer_len != 0) {
+		/* Write the FIFO */
+		dwc_otg_ep_write_packet(core_if, ep, 0);
+
+		len = ep->xfer_len - ep->xfer_count;
+		if (len > ep->maxpacket) {
+			len = ep->maxpacket;
+		}
+
+		dwords = (len + 3) / 4;
+		txstatus.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+				   dtxfsts);
+		DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", ep->num,
+			    txstatus.d32);
+	}
+}
+
+/**
+ * This function initializes a descriptor chain for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_iso_ep_start_frm_transfer(dwc_otg_core_if_t * core_if,
+				       dwc_ep_t * ep)
+{
+	deptsiz_data_t deptsiz = {.d32 = 0 };
+	depctl_data_t depctl = {.d32 = 0 };
+	dsts_data_t dsts = {.d32 = 0 };
+	volatile uint32_t *addr;
+
+	if (ep->is_in) {
+		addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+	} else {
+		addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+	}
+
+	ep->xfer_len = ep->data_per_frame;
+	ep->xfer_count = 0;
+	ep->xfer_buff = ep->cur_pkt_addr;
+	ep->dma_addr = ep->cur_pkt_dma_addr;
+
+	if (ep->is_in) {
+		/* Program the transfer size and packet count
+		 *      as follows: xfersize = N * maxpacket +
+		 *      short_packet pktcnt = N + (short_packet
+		 *      exist ? 1 : 0)
+		 */
+		deptsiz.b.xfersize = ep->xfer_len;
+		deptsiz.b.pktcnt =
+		    (ep->xfer_len - 1 + ep->maxpacket) / ep->maxpacket;
+		deptsiz.b.mc = deptsiz.b.pktcnt;
+		DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->dieptsiz,
+				deptsiz.d32);
+
+		/* Write the DMA register */
+		if (core_if->dma_enable) {
+			DWC_WRITE_REG32(&
+					(core_if->dev_if->in_ep_regs[ep->num]->
+					 diepdma), (uint32_t) ep->dma_addr);
+		}
+	} else {
+		deptsiz.b.pktcnt =
+		    (ep->xfer_len + (ep->maxpacket - 1)) / ep->maxpacket;
+		deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
+
+		DWC_WRITE_REG32(&core_if->dev_if->
+				out_ep_regs[ep->num]->doeptsiz, deptsiz.d32);
+
+		if (core_if->dma_enable) {
+			DWC_WRITE_REG32(&
+					(core_if->dev_if->
+					 out_ep_regs[ep->num]->doepdma),
+					(uint32_t) ep->dma_addr);
+		}
+	}
+
+	/** Enable endpoint, clear nak  */
+
+	depctl.d32 = 0;
+	if (ep->bInterval == 1) {
+		dsts.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+		ep->next_frame = dsts.b.soffn + ep->bInterval;
+
+		if (ep->next_frame & 0x1) {
+			depctl.b.setd1pid = 1;
+		} else {
+			depctl.b.setd0pid = 1;
+		}
+	} else {
+		ep->next_frame += ep->bInterval;
+
+		if (ep->next_frame & 0x1) {
+			depctl.b.setd1pid = 1;
+		} else {
+			depctl.b.setd0pid = 1;
+		}
+	}
+	depctl.b.epena = 1;
+	depctl.b.cnak = 1;
+
+	DWC_MODIFY_REG32(addr, 0, depctl.d32);
+	depctl.d32 = DWC_READ_REG32(addr);
+
+	if (ep->is_in && core_if->dma_enable == 0) {
+		write_isoc_frame_data(core_if, ep);
+	}
+
+}
+#endif /* DWC_EN_ISOC */
+
+static void dwc_otg_set_uninitialized(int32_t * p, int size)
+{
+	int i;
+	for (i = 0; i < size; i++) {
+		p[i] = -1;
+	}
+}
+
+static int dwc_otg_param_initialized(int32_t val)
+{
+	return val != -1;
+}
+
+static int dwc_otg_setup_params(dwc_otg_core_if_t * core_if)
+{
+	int i;
+	core_if->core_params = DWC_ALLOC(sizeof(*core_if->core_params));
+	if (!core_if->core_params) {
+		return -DWC_E_NO_MEMORY;
+	}
+	dwc_otg_set_uninitialized((int32_t *) core_if->core_params,
+				  sizeof(*core_if->core_params) /
+				  sizeof(int32_t));
+	DWC_PRINTF("Setting default values for core params\n");
+	dwc_otg_set_param_otg_cap(core_if, dwc_param_otg_cap_default);
+	dwc_otg_set_param_dma_enable(core_if, dwc_param_dma_enable_default);
+	dwc_otg_set_param_dma_desc_enable(core_if,
+					  dwc_param_dma_desc_enable_default);
+	dwc_otg_set_param_opt(core_if, dwc_param_opt_default);
+	dwc_otg_set_param_dma_burst_size(core_if,
+					 dwc_param_dma_burst_size_default);
+	dwc_otg_set_param_host_support_fs_ls_low_power(core_if,
+						       dwc_param_host_support_fs_ls_low_power_default);
+	dwc_otg_set_param_enable_dynamic_fifo(core_if,
+					      dwc_param_enable_dynamic_fifo_default);
+	dwc_otg_set_param_data_fifo_size(core_if,
+					 dwc_param_data_fifo_size_default);
+	dwc_otg_set_param_dev_rx_fifo_size(core_if,
+					   dwc_param_dev_rx_fifo_size_default);
+	dwc_otg_set_param_dev_nperio_tx_fifo_size(core_if,
+						  dwc_param_dev_nperio_tx_fifo_size_default);
+	dwc_otg_set_param_host_rx_fifo_size(core_if,
+					    dwc_param_host_rx_fifo_size_default);
+	dwc_otg_set_param_host_nperio_tx_fifo_size(core_if,
+						   dwc_param_host_nperio_tx_fifo_size_default);
+	dwc_otg_set_param_host_perio_tx_fifo_size(core_if,
+						  dwc_param_host_perio_tx_fifo_size_default);
+	dwc_otg_set_param_max_transfer_size(core_if,
+					    dwc_param_max_transfer_size_default);
+	dwc_otg_set_param_max_packet_count(core_if,
+					   dwc_param_max_packet_count_default);
+	dwc_otg_set_param_host_channels(core_if,
+					dwc_param_host_channels_default);
+	dwc_otg_set_param_dev_endpoints(core_if,
+					dwc_param_dev_endpoints_default);
+	dwc_otg_set_param_phy_type(core_if, dwc_param_phy_type_default);
+	dwc_otg_set_param_speed(core_if, dwc_param_speed_default);
+	dwc_otg_set_param_host_ls_low_power_phy_clk(core_if,
+						    dwc_param_host_ls_low_power_phy_clk_default);
+	dwc_otg_set_param_phy_ulpi_ddr(core_if, dwc_param_phy_ulpi_ddr_default);
+	dwc_otg_set_param_phy_ulpi_ext_vbus(core_if,
+					    dwc_param_phy_ulpi_ext_vbus_default);
+	dwc_otg_set_param_phy_utmi_width(core_if,
+					 dwc_param_phy_utmi_width_default);
+	dwc_otg_set_param_ts_dline(core_if, dwc_param_ts_dline_default);
+	dwc_otg_set_param_i2c_enable(core_if, dwc_param_i2c_enable_default);
+	dwc_otg_set_param_ulpi_fs_ls(core_if, dwc_param_ulpi_fs_ls_default);
+	dwc_otg_set_param_en_multiple_tx_fifo(core_if,
+					      dwc_param_en_multiple_tx_fifo_default);
+	for (i = 0; i < 15; i++) {
+		dwc_otg_set_param_dev_perio_tx_fifo_size(core_if,
+							 dwc_param_dev_perio_tx_fifo_size_default,
+							 i);
+	}
+
+	for (i = 0; i < 15; i++) {
+		dwc_otg_set_param_dev_tx_fifo_size(core_if,
+						   dwc_param_dev_tx_fifo_size_default,
+						   i);
+	}
+	dwc_otg_set_param_thr_ctl(core_if, dwc_param_thr_ctl_default);
+	dwc_otg_set_param_mpi_enable(core_if, dwc_param_mpi_enable_default);
+	dwc_otg_set_param_pti_enable(core_if, dwc_param_pti_enable_default);
+	dwc_otg_set_param_lpm_enable(core_if, dwc_param_lpm_enable_default);
+	dwc_otg_set_param_ic_usb_cap(core_if, dwc_param_ic_usb_cap_default);
+	dwc_otg_set_param_tx_thr_length(core_if,
+					dwc_param_tx_thr_length_default);
+	dwc_otg_set_param_rx_thr_length(core_if,
+					dwc_param_rx_thr_length_default);
+	dwc_otg_set_param_ahb_thr_ratio(core_if,
+					dwc_param_ahb_thr_ratio_default);
+	dwc_otg_set_param_power_down(core_if, dwc_param_power_down_default);
+	dwc_otg_set_param_reload_ctl(core_if, dwc_param_reload_ctl_default);
+	dwc_otg_set_param_dev_out_nak(core_if, dwc_param_dev_out_nak_default);
+	dwc_otg_set_param_cont_on_bna(core_if, dwc_param_cont_on_bna_default);
+	dwc_otg_set_param_ahb_single(core_if, dwc_param_ahb_single_default);
+	dwc_otg_set_param_otg_ver(core_if, dwc_param_otg_ver_default);
+	dwc_otg_set_param_adp_enable(core_if, dwc_param_adp_enable_default);
+	DWC_PRINTF("Finished setting default values for core params\n");
+
+	return 0;
+}
+
+uint8_t dwc_otg_is_dma_enable(dwc_otg_core_if_t * core_if)
+{
+	return core_if->dma_enable;
+}
+
+/* Checks if the parameter is outside of its valid range of values */
+#define DWC_OTG_PARAM_TEST(_param_, _low_, _high_) \
+		(((_param_) < (_low_)) || \
+		((_param_) > (_high_)))
+
+/* Parameter access functions */
+int dwc_otg_set_param_otg_cap(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int valid;
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 2)) {
+		DWC_WARN("Wrong value for otg_cap parameter\n");
+		DWC_WARN("otg_cap parameter must be 0,1 or 2\n");
+		retval = -DWC_E_INVALID;
+		goto out;
+	}
+
+	valid = 1;
+	switch (val) {
+	case DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE:
+		if (core_if->hwcfg2.b.op_mode !=
+		    DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+			valid = 0;
+		break;
+	case DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE:
+		if ((core_if->hwcfg2.b.op_mode !=
+		     DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+		    && (core_if->hwcfg2.b.op_mode !=
+			DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG)
+		    && (core_if->hwcfg2.b.op_mode !=
+			DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE)
+		    && (core_if->hwcfg2.b.op_mode !=
+			DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) {
+			valid = 0;
+		}
+		break;
+	case DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE:
+		/* always valid */
+		break;
+	}
+	if (!valid) {
+		if (dwc_otg_param_initialized(core_if->core_params->otg_cap)) {
+			DWC_ERROR
+			    ("%d invalid for otg_cap paremter. Check HW configuration.\n",
+			     val);
+		}
+		val =
+		    (((core_if->hwcfg2.b.op_mode ==
+		       DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+		      || (core_if->hwcfg2.b.op_mode ==
+			  DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG)
+		      || (core_if->hwcfg2.b.op_mode ==
+			  DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE)
+		      || (core_if->hwcfg2.b.op_mode ==
+			  DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) ?
+		     DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE :
+		     DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->otg_cap = val;
+out:
+	return retval;
+}
+
+int32_t dwc_otg_get_param_otg_cap(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->otg_cap;
+}
+
+int dwc_otg_set_param_opt(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong value for opt parameter\n");
+		return -DWC_E_INVALID;
+	}
+	core_if->core_params->opt = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_opt(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->opt;
+}
+
+int dwc_otg_set_param_dma_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong value for dma enable\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val == 1) && (core_if->hwcfg2.b.architecture == 0)) {
+		if (dwc_otg_param_initialized(core_if->core_params->dma_enable)) {
+			DWC_ERROR
+			    ("%d invalid for dma_enable paremter. Check HW configuration.\n",
+			     val);
+		}
+		val = 0;
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->dma_enable = val;
+	if (val == 0) {
+		dwc_otg_set_param_dma_desc_enable(core_if, 0);
+	}
+	return retval;
+}
+
+int32_t dwc_otg_get_param_dma_enable(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->dma_enable;
+}
+
+int dwc_otg_set_param_dma_desc_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong value for dma_enable\n");
+		DWC_WARN("dma_desc_enable must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val == 1)
+	    && ((dwc_otg_get_param_dma_enable(core_if) == 0)
+		|| (core_if->hwcfg4.b.desc_dma == 0))) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->dma_desc_enable)) {
+			DWC_ERROR
+			    ("%d invalid for dma_desc_enable paremter. Check HW configuration.\n",
+			     val);
+		}
+		val = 0;
+		retval = -DWC_E_INVALID;
+	}
+	core_if->core_params->dma_desc_enable = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_dma_desc_enable(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->dma_desc_enable;
+}
+
+int dwc_otg_set_param_host_support_fs_ls_low_power(dwc_otg_core_if_t * core_if,
+						   int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong value for host_support_fs_low_power\n");
+		DWC_WARN("host_support_fs_low_power must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+	core_if->core_params->host_support_fs_ls_low_power = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_host_support_fs_ls_low_power(dwc_otg_core_if_t *
+						       core_if)
+{
+	return core_if->core_params->host_support_fs_ls_low_power;
+}
+
+int dwc_otg_set_param_enable_dynamic_fifo(dwc_otg_core_if_t * core_if,
+					  int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong value for enable_dynamic_fifo\n");
+		DWC_WARN("enable_dynamic_fifo must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val == 1) && (core_if->hwcfg2.b.dynamic_fifo == 0)) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->enable_dynamic_fifo)) {
+			DWC_ERROR
+			    ("%d invalid for enable_dynamic_fifo paremter. Check HW configuration.\n",
+			     val);
+		}
+		val = 0;
+		retval = -DWC_E_INVALID;
+	}
+	core_if->core_params->enable_dynamic_fifo = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_enable_dynamic_fifo(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->enable_dynamic_fifo;
+}
+
+int dwc_otg_set_param_data_fifo_size(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 32, 32768)) {
+		DWC_WARN("Wrong value for data_fifo_size\n");
+		DWC_WARN("data_fifo_size must be 32-32768\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val > core_if->hwcfg3.b.dfifo_depth) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->data_fifo_size)) {
+			DWC_ERROR
+			    ("%d invalid for data_fifo_size parameter. Check HW configuration.\n",
+			     val);
+		}
+		val = core_if->hwcfg3.b.dfifo_depth;
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->data_fifo_size = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_data_fifo_size(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->data_fifo_size;
+}
+
+int dwc_otg_set_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+		DWC_WARN("Wrong value for dev_rx_fifo_size\n");
+		DWC_WARN("dev_rx_fifo_size must be 16-32768\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val > DWC_READ_REG32(&core_if->core_global_regs->grxfsiz)) {
+		if (dwc_otg_param_initialized(core_if->core_params->dev_rx_fifo_size)) {
+		DWC_WARN("%d invalid for dev_rx_fifo_size parameter\n", val);
+		}
+		val = DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->dev_rx_fifo_size = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->dev_rx_fifo_size;
+}
+
+int dwc_otg_set_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+					      int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+		DWC_WARN("Wrong value for dev_nperio_tx_fifo\n");
+		DWC_WARN("dev_nperio_tx_fifo must be 16-32768\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val > (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >> 16)) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->dev_nperio_tx_fifo_size)) {
+			DWC_ERROR
+			    ("%d invalid for dev_nperio_tx_fifo_size. Check HW configuration.\n",
+			     val);
+		}
+		val =
+		    (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >>
+		     16);
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->dev_nperio_tx_fifo_size = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->dev_nperio_tx_fifo_size;
+}
+
+int dwc_otg_set_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if,
+					int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+		DWC_WARN("Wrong value for host_rx_fifo_size\n");
+		DWC_WARN("host_rx_fifo_size must be 16-32768\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val > DWC_READ_REG32(&core_if->core_global_regs->grxfsiz)) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->host_rx_fifo_size)) {
+			DWC_ERROR
+			    ("%d invalid for host_rx_fifo_size. Check HW configuration.\n",
+			     val);
+		}
+		val = DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->host_rx_fifo_size = val;
+	return retval;
+
+}
+
+int32_t dwc_otg_get_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->host_rx_fifo_size;
+}
+
+int dwc_otg_set_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+					       int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+		DWC_WARN("Wrong value for host_nperio_tx_fifo_size\n");
+		DWC_WARN("host_nperio_tx_fifo_size must be 16-32768\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val > (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >> 16)) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->host_nperio_tx_fifo_size)) {
+			DWC_ERROR
+			    ("%d invalid for host_nperio_tx_fifo_size. Check HW configuration.\n",
+			     val);
+		}
+		val =
+		    (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >>
+		     16);
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->host_nperio_tx_fifo_size = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->host_nperio_tx_fifo_size;
+}
+
+int dwc_otg_set_param_host_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+					      int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
+		DWC_WARN("Wrong value for host_perio_tx_fifo_size\n");
+		DWC_WARN("host_perio_tx_fifo_size must be 16-32768\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val > ((core_if->hptxfsiz.d32) >> 16)) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->host_perio_tx_fifo_size)) {
+			DWC_ERROR
+			    ("%d invalid for host_perio_tx_fifo_size. Check HW configuration.\n",
+			     val);
+		}
+		val = (core_if->hptxfsiz.d32) >> 16;
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->host_perio_tx_fifo_size = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_host_perio_tx_fifo_size(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->host_perio_tx_fifo_size;
+}
+
+int dwc_otg_set_param_max_transfer_size(dwc_otg_core_if_t * core_if,
+					int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 2047, 524288)) {
+		DWC_WARN("Wrong value for max_transfer_size\n");
+		DWC_WARN("max_transfer_size must be 2047-524288\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val >= (1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11))) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->max_transfer_size)) {
+			DWC_ERROR
+			    ("%d invalid for max_transfer_size. Check HW configuration.\n",
+			     val);
+		}
+		val =
+		    ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 11)) -
+		     1);
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->max_transfer_size = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_max_transfer_size(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->max_transfer_size;
+}
+
+int dwc_otg_set_param_max_packet_count(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 15, 511)) {
+		DWC_WARN("Wrong value for max_packet_count\n");
+		DWC_WARN("max_packet_count must be 15-511\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val > (1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4))) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->max_packet_count)) {
+			DWC_ERROR
+			    ("%d invalid for max_packet_count. Check HW configuration.\n",
+			     val);
+		}
+		val =
+		    ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4)) - 1);
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->max_packet_count = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_max_packet_count(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->max_packet_count;
+}
+
+int dwc_otg_set_param_host_channels(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 1, 16)) {
+		DWC_WARN("Wrong value for host_channels\n");
+		DWC_WARN("host_channels must be 1-16\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val > (core_if->hwcfg2.b.num_host_chan + 1)) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->host_channels)) {
+			DWC_ERROR
+			    ("%d invalid for host_channels. Check HW configurations.\n",
+			     val);
+		}
+		val = (core_if->hwcfg2.b.num_host_chan + 1);
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->host_channels = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_host_channels(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->host_channels;
+}
+
+int dwc_otg_set_param_dev_endpoints(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 1, 15)) {
+		DWC_WARN("Wrong value for dev_endpoints\n");
+		DWC_WARN("dev_endpoints must be 1-15\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val > (core_if->hwcfg2.b.num_dev_ep)) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->dev_endpoints)) {
+			DWC_ERROR
+			    ("%d invalid for dev_endpoints. Check HW configurations.\n",
+			     val);
+		}
+		val = core_if->hwcfg2.b.num_dev_ep;
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->dev_endpoints = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_dev_endpoints(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->dev_endpoints;
+}
+
+int dwc_otg_set_param_phy_type(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	int valid = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 2)) {
+		DWC_WARN("Wrong value for phy_type\n");
+		DWC_WARN("phy_type must be 0,1 or 2\n");
+		return -DWC_E_INVALID;
+	}
+#ifndef NO_FS_PHY_HW_CHECKS
+	if ((val == DWC_PHY_TYPE_PARAM_UTMI) &&
+	    ((core_if->hwcfg2.b.hs_phy_type == 1) ||
+	     (core_if->hwcfg2.b.hs_phy_type == 3))) {
+		valid = 1;
+	} else if ((val == DWC_PHY_TYPE_PARAM_ULPI) &&
+		   ((core_if->hwcfg2.b.hs_phy_type == 2) ||
+		    (core_if->hwcfg2.b.hs_phy_type == 3))) {
+		valid = 1;
+	} else if ((val == DWC_PHY_TYPE_PARAM_FS) &&
+		   (core_if->hwcfg2.b.fs_phy_type == 1)) {
+		valid = 1;
+	}
+	if (!valid) {
+		if (dwc_otg_param_initialized(core_if->core_params->phy_type)) {
+			DWC_ERROR
+			    ("%d invalid for phy_type. Check HW configurations.\n",
+			     val);
+		}
+		if (core_if->hwcfg2.b.hs_phy_type) {
+			if ((core_if->hwcfg2.b.hs_phy_type == 3) ||
+			    (core_if->hwcfg2.b.hs_phy_type == 1)) {
+				val = DWC_PHY_TYPE_PARAM_UTMI;
+			} else {
+				val = DWC_PHY_TYPE_PARAM_ULPI;
+			}
+		}
+		retval = -DWC_E_INVALID;
+	}
+#endif
+	core_if->core_params->phy_type = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_phy_type(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->phy_type;
+}
+
+int dwc_otg_set_param_speed(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong value for speed parameter\n");
+		DWC_WARN("max_speed parameter must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+	if ((val == 0)
+	    && dwc_otg_get_param_phy_type(core_if) == DWC_PHY_TYPE_PARAM_FS) {
+		if (dwc_otg_param_initialized(core_if->core_params->speed)) {
+			DWC_ERROR
+			    ("%d invalid for speed paremter. Check HW configuration.\n",
+			     val);
+		}
+		val =
+		    (dwc_otg_get_param_phy_type(core_if) ==
+		     DWC_PHY_TYPE_PARAM_FS ? 1 : 0);
+		retval = -DWC_E_INVALID;
+	}
+	core_if->core_params->speed = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_speed(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->speed;
+}
+
+int dwc_otg_set_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t * core_if,
+						int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN
+		    ("Wrong value for host_ls_low_power_phy_clk parameter\n");
+		DWC_WARN("host_ls_low_power_phy_clk must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val == DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ)
+	    && (dwc_otg_get_param_phy_type(core_if) == DWC_PHY_TYPE_PARAM_FS)) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->host_ls_low_power_phy_clk)) {
+			DWC_ERROR
+			    ("%d invalid for host_ls_low_power_phy_clk. Check HW configuration.\n",
+			     val);
+		}
+		val =
+		    (dwc_otg_get_param_phy_type(core_if) ==
+		     DWC_PHY_TYPE_PARAM_FS) ?
+		    DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ :
+		    DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ;
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->host_ls_low_power_phy_clk = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->host_ls_low_power_phy_clk;
+}
+
+int dwc_otg_set_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong value for phy_ulpi_ddr\n");
+		DWC_WARN("phy_upli_ddr must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	core_if->core_params->phy_ulpi_ddr = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->phy_ulpi_ddr;
+}
+
+int dwc_otg_set_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if,
+					int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong valaue for phy_ulpi_ext_vbus\n");
+		DWC_WARN("phy_ulpi_ext_vbus must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	core_if->core_params->phy_ulpi_ext_vbus = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->phy_ulpi_ext_vbus;
+}
+
+int dwc_otg_set_param_phy_utmi_width(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 8, 8) && DWC_OTG_PARAM_TEST(val, 16, 16)) {
+		DWC_WARN("Wrong valaue for phy_utmi_width\n");
+		DWC_WARN("phy_utmi_width must be 8 or 16\n");
+		return -DWC_E_INVALID;
+	}
+
+	core_if->core_params->phy_utmi_width = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_phy_utmi_width(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->phy_utmi_width;
+}
+
+int dwc_otg_set_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong valaue for ulpi_fs_ls\n");
+		DWC_WARN("ulpi_fs_ls must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	core_if->core_params->ulpi_fs_ls = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->ulpi_fs_ls;
+}
+
+int dwc_otg_set_param_ts_dline(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong valaue for ts_dline\n");
+		DWC_WARN("ts_dline must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	core_if->core_params->ts_dline = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_ts_dline(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->ts_dline;
+}
+
+int dwc_otg_set_param_i2c_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong valaue for i2c_enable\n");
+		DWC_WARN("i2c_enable must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+#ifndef NO_FS_PHY_HW_CHECK
+	if (val == 1 && core_if->hwcfg3.b.i2c == 0) {
+		if (dwc_otg_param_initialized(core_if->core_params->i2c_enable)) {
+			DWC_ERROR
+			    ("%d invalid for i2c_enable. Check HW configuration.\n",
+			     val);
+		}
+		val = 0;
+		retval = -DWC_E_INVALID;
+	}
+#endif
+
+	core_if->core_params->i2c_enable = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_i2c_enable(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->i2c_enable;
+}
+
+int dwc_otg_set_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+					     int32_t val, int fifo_num)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 4, 768)) {
+		DWC_WARN("Wrong value for dev_perio_tx_fifo_size\n");
+		DWC_WARN("dev_perio_tx_fifo_size must be 4-768\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val >
+	    (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]))) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->dev_perio_tx_fifo_size[fifo_num])) {
+			DWC_ERROR
+			    ("`%d' invalid for parameter `dev_perio_fifo_size_%d'. Check HW configuration.\n",
+			     val, fifo_num);
+		}
+		val = (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]));
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->dev_perio_tx_fifo_size[fifo_num] = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+						 int fifo_num)
+{
+	return core_if->core_params->dev_perio_tx_fifo_size[fifo_num];
+}
+
+int dwc_otg_set_param_en_multiple_tx_fifo(dwc_otg_core_if_t * core_if,
+					  int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong valaue for en_multiple_tx_fifo,\n");
+		DWC_WARN("en_multiple_tx_fifo must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val == 1 && core_if->hwcfg4.b.ded_fifo_en == 0) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->en_multiple_tx_fifo)) {
+			DWC_ERROR
+			    ("%d invalid for parameter en_multiple_tx_fifo. Check HW configuration.\n",
+			     val);
+		}
+		val = 0;
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->en_multiple_tx_fifo = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_en_multiple_tx_fifo(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->en_multiple_tx_fifo;
+}
+
+int dwc_otg_set_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if, int32_t val,
+				       int fifo_num)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 4, 768)) {
+		DWC_WARN("Wrong value for dev_tx_fifo_size\n");
+		DWC_WARN("dev_tx_fifo_size must be 4-768\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val >
+	    (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]))) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->dev_tx_fifo_size[fifo_num])) {
+			DWC_ERROR
+			    ("`%d' invalid for parameter `dev_tx_fifo_size_%d'. Check HW configuration.\n",
+			     val, fifo_num);
+		}
+		val = (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]));
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->dev_tx_fifo_size[fifo_num] = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if,
+					   int fifo_num)
+{
+	return core_if->core_params->dev_tx_fifo_size[fifo_num];
+}
+
+int dwc_otg_set_param_thr_ctl(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 7)) {
+		DWC_WARN("Wrong value for thr_ctl\n");
+		DWC_WARN("thr_ctl must be 0-7\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val != 0) &&
+	    (!dwc_otg_get_param_dma_enable(core_if) ||
+	     !core_if->hwcfg4.b.ded_fifo_en)) {
+		if (dwc_otg_param_initialized(core_if->core_params->thr_ctl)) {
+			DWC_ERROR
+			    ("%d invalid for parameter thr_ctl. Check HW configuration.\n",
+			     val);
+		}
+		val = 0;
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->thr_ctl = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_thr_ctl(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->thr_ctl;
+}
+
+int dwc_otg_set_param_lpm_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("Wrong value for lpm_enable\n");
+		DWC_WARN("lpm_enable must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val && !core_if->hwcfg3.b.otg_lpm_en) {
+		if (dwc_otg_param_initialized(core_if->core_params->lpm_enable)) {
+			DWC_ERROR
+			    ("%d invalid for parameter lpm_enable. Check HW configuration.\n",
+			     val);
+		}
+		val = 0;
+		retval = -DWC_E_INVALID;
+	}
+
+	core_if->core_params->lpm_enable = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_lpm_enable(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->lpm_enable;
+}
+
+int dwc_otg_set_param_tx_thr_length(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 8, 128)) {
+		DWC_WARN("Wrong valaue for tx_thr_length\n");
+		DWC_WARN("tx_thr_length must be 8 - 128\n");
+		return -DWC_E_INVALID;
+	}
+
+	core_if->core_params->tx_thr_length = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_tx_thr_length(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->tx_thr_length;
+}
+
+int dwc_otg_set_param_rx_thr_length(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 8, 128)) {
+		DWC_WARN("Wrong valaue for rx_thr_length\n");
+		DWC_WARN("rx_thr_length must be 8 - 128\n");
+		return -DWC_E_INVALID;
+	}
+
+	core_if->core_params->rx_thr_length = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_rx_thr_length(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->rx_thr_length;
+}
+
+int dwc_otg_set_param_dma_burst_size(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	if (DWC_OTG_PARAM_TEST(val, 1, 1) &&
+	    DWC_OTG_PARAM_TEST(val, 4, 4) &&
+	    DWC_OTG_PARAM_TEST(val, 8, 8) &&
+	    DWC_OTG_PARAM_TEST(val, 16, 16) &&
+	    DWC_OTG_PARAM_TEST(val, 32, 32) &&
+	    DWC_OTG_PARAM_TEST(val, 64, 64) &&
+	    DWC_OTG_PARAM_TEST(val, 128, 128) &&
+	    DWC_OTG_PARAM_TEST(val, 256, 256)) {
+		DWC_WARN("`%d' invalid for parameter `dma_burst_size'\n", val);
+		return -DWC_E_INVALID;
+	}
+	core_if->core_params->dma_burst_size = val;
+	return 0;
+}
+
+int32_t dwc_otg_get_param_dma_burst_size(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->dma_burst_size;
+}
+
+int dwc_otg_set_param_pti_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("`%d' invalid for parameter `pti_enable'\n", val);
+		return -DWC_E_INVALID;
+	}
+	if (val && (core_if->snpsid < OTG_CORE_REV_2_72a)) {
+		if (dwc_otg_param_initialized(core_if->core_params->pti_enable)) {
+			DWC_ERROR
+			    ("%d invalid for parameter pti_enable. Check HW configuration.\n",
+			     val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+	core_if->core_params->pti_enable = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_pti_enable(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->pti_enable;
+}
+
+int dwc_otg_set_param_mpi_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("`%d' invalid for parameter `mpi_enable'\n", val);
+		return -DWC_E_INVALID;
+	}
+	if (val && (core_if->hwcfg2.b.multi_proc_int == 0)) {
+		if (dwc_otg_param_initialized(core_if->core_params->mpi_enable)) {
+			DWC_ERROR
+			    ("%d invalid for parameter mpi_enable. Check HW configuration.\n",
+			     val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+	core_if->core_params->mpi_enable = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_mpi_enable(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->mpi_enable;
+}
+
+int dwc_otg_set_param_adp_enable(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("`%d' invalid for parameter `adp_enable'\n", val);
+		return -DWC_E_INVALID;
+	}
+	if (val && (core_if->hwcfg3.b.adp_supp == 0)) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->adp_supp_enable)) {
+			DWC_ERROR
+			    ("%d invalid for parameter adp_enable. Check HW configuration.\n",
+			     val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+	core_if->core_params->adp_supp_enable = val;
+	/*Set OTG version 2.0 in case of enabling ADP*/
+	if (val)
+		dwc_otg_set_param_otg_ver(core_if, 1);
+
+	return retval;
+}
+
+int32_t dwc_otg_get_param_adp_enable(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->adp_supp_enable;
+}
+
+int dwc_otg_set_param_ic_usb_cap(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("`%d' invalid for parameter `ic_usb_cap'\n", val);
+		DWC_WARN("ic_usb_cap must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val && (core_if->hwcfg2.b.otg_enable_ic_usb == 0)) {
+		if (dwc_otg_param_initialized(core_if->core_params->ic_usb_cap)) {
+			DWC_ERROR
+			    ("%d invalid for parameter ic_usb_cap. Check HW configuration.\n",
+			     val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+	core_if->core_params->ic_usb_cap = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_ic_usb_cap(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->ic_usb_cap;
+}
+
+int dwc_otg_set_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	int valid = 1;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 3)) {
+		DWC_WARN("`%d' invalid for parameter `ahb_thr_ratio'\n", val);
+		DWC_WARN("ahb_thr_ratio must be 0 - 3\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (val
+	    && (core_if->snpsid < OTG_CORE_REV_2_81a
+		|| !dwc_otg_get_param_thr_ctl(core_if))) {
+		valid = 0;
+	} else if (val
+		   && ((dwc_otg_get_param_tx_thr_length(core_if) / (1 << val)) <
+		       4)) {
+		valid = 0;
+	}
+	if (valid == 0) {
+		if (dwc_otg_param_initialized
+		    (core_if->core_params->ahb_thr_ratio)) {
+			DWC_ERROR
+			    ("%d invalid for parameter ahb_thr_ratio. Check HW configuration.\n",
+			     val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+
+	core_if->core_params->ahb_thr_ratio = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->ahb_thr_ratio;
+}
+
+int dwc_otg_set_param_power_down(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	int valid = 1;
+	hwcfg4_data_t hwcfg4 = {.d32 = 0 };
+	hwcfg4.d32 = DWC_READ_REG32(&core_if->core_global_regs->ghwcfg4);
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 3)) {
+		DWC_WARN("`%d' invalid for parameter `power_down'\n", val);
+		DWC_WARN("power_down must be 0 - 2\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val == 2) && (core_if->snpsid < OTG_CORE_REV_2_91a)) {
+		valid = 0;
+	}
+	if ((val == 3)
+	    && ((core_if->snpsid < OTG_CORE_REV_3_00a)
+		|| (hwcfg4.b.xhiber == 0))) {
+		valid = 0;
+	}
+	if (valid == 0) {
+		if (dwc_otg_param_initialized(core_if->core_params->power_down)) {
+			DWC_ERROR
+			    ("%d invalid for parameter power_down. Check HW configuration.\n",
+			     val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+	core_if->core_params->power_down = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_power_down(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->power_down;
+}
+
+int dwc_otg_set_param_reload_ctl(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	int valid = 1;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("`%d' invalid for parameter `reload_ctl'\n", val);
+		DWC_WARN("reload_ctl must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val == 1) && (core_if->snpsid < OTG_CORE_REV_2_92a)) {
+		valid = 0;
+	}
+	if (valid == 0) {
+		if (dwc_otg_param_initialized(core_if->core_params->reload_ctl)) {
+			DWC_ERROR("%d invalid for parameter reload_ctl."
+				  "Check HW configuration.\n", val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+	core_if->core_params->reload_ctl = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_reload_ctl(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->reload_ctl;
+}
+
+int dwc_otg_set_param_dev_out_nak(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	int valid = 1;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("`%d' invalid for parameter `dev_out_nak'\n", val);
+		DWC_WARN("dev_out_nak must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val == 1) && ((core_if->snpsid < OTG_CORE_REV_2_93a) ||
+		!(core_if->core_params->dma_desc_enable))) {
+		valid = 0;
+	}
+	if (valid == 0) {
+		if (dwc_otg_param_initialized(core_if->core_params->dev_out_nak)) {
+			DWC_ERROR("%d invalid for parameter dev_out_nak."
+				"Check HW configuration.\n", val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+	core_if->core_params->dev_out_nak = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_dev_out_nak(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->dev_out_nak;
+}
+
+int dwc_otg_set_param_cont_on_bna(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	int valid = 1;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("`%d' invalid for parameter `cont_on_bna'\n", val);
+		DWC_WARN("cont_on_bna must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val == 1) && ((core_if->snpsid < OTG_CORE_REV_2_94a) ||
+		!(core_if->core_params->dma_desc_enable))) {
+			valid = 0;
+	}
+	if (valid == 0) {
+		if (dwc_otg_param_initialized(core_if->core_params->cont_on_bna)) {
+			DWC_ERROR("%d invalid for parameter cont_on_bna."
+				"Check HW configuration.\n", val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+	core_if->core_params->cont_on_bna = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_cont_on_bna(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->cont_on_bna;
+}
+
+int dwc_otg_set_param_ahb_single(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+	int valid = 1;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("`%d' invalid for parameter `ahb_single'\n", val);
+		DWC_WARN("ahb_single must be 0 or 1\n");
+		return -DWC_E_INVALID;
+	}
+
+	if ((val == 1) && (core_if->snpsid < OTG_CORE_REV_2_94a)) {
+			valid = 0;
+	}
+	if (valid == 0) {
+		if (dwc_otg_param_initialized(core_if->core_params->ahb_single)) {
+			DWC_ERROR("%d invalid for parameter ahb_single."
+				"Check HW configuration.\n", val);
+		}
+		retval = -DWC_E_INVALID;
+		val = 0;
+	}
+	core_if->core_params->ahb_single = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_ahb_single(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->ahb_single;
+}
+
+int dwc_otg_set_param_otg_ver(dwc_otg_core_if_t * core_if, int32_t val)
+{
+	int retval = 0;
+
+	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
+		DWC_WARN("`%d' invalid for parameter `otg_ver'\n", val);
+		DWC_WARN
+		    ("otg_ver must be 0(for OTG 1.3 support) or 1(for OTG 2.0 support)\n");
+		return -DWC_E_INVALID;
+	}
+
+	core_if->core_params->otg_ver = val;
+	return retval;
+}
+
+int32_t dwc_otg_get_param_otg_ver(dwc_otg_core_if_t * core_if)
+{
+	return core_if->core_params->otg_ver;
+}
+
+uint32_t dwc_otg_get_hnpstatus(dwc_otg_core_if_t * core_if)
+{
+	gotgctl_data_t otgctl;
+	otgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+	return otgctl.b.hstnegscs;
+}
+
+uint32_t dwc_otg_get_srpstatus(dwc_otg_core_if_t * core_if)
+{
+	gotgctl_data_t otgctl;
+	otgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+	return otgctl.b.sesreqscs;
+}
+
+void dwc_otg_set_hnpreq(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	if(core_if->otg_ver == 0) {
+		gotgctl_data_t otgctl;
+		otgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+		otgctl.b.hnpreq = val;
+		DWC_WRITE_REG32(&core_if->core_global_regs->gotgctl, otgctl.d32);
+	} else {
+		core_if->otg_sts = val;
+	}
+}
+
+uint32_t dwc_otg_get_gsnpsid(dwc_otg_core_if_t * core_if)
+{
+	return core_if->snpsid;
+}
+
+uint32_t dwc_otg_get_mode(dwc_otg_core_if_t * core_if)
+{
+	gintsts_data_t gintsts;
+	gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+	return gintsts.b.curmode;
+}
+
+uint32_t dwc_otg_get_hnpcapable(dwc_otg_core_if_t * core_if)
+{
+	gusbcfg_data_t usbcfg;
+	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+	return usbcfg.b.hnpcap;
+}
+
+void dwc_otg_set_hnpcapable(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	gusbcfg_data_t usbcfg;
+	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+	usbcfg.b.hnpcap = val;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, usbcfg.d32);
+}
+
+uint32_t dwc_otg_get_srpcapable(dwc_otg_core_if_t * core_if)
+{
+	gusbcfg_data_t usbcfg;
+	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+	return usbcfg.b.srpcap;
+}
+
+void dwc_otg_set_srpcapable(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	gusbcfg_data_t usbcfg;
+	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+	usbcfg.b.srpcap = val;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, usbcfg.d32);
+}
+
+uint32_t dwc_otg_get_devspeed(dwc_otg_core_if_t * core_if)
+{
+	dcfg_data_t dcfg;
+	/* originally: dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg); */
+
+        dcfg.d32 = -1; //GRAYG
+        DWC_DEBUGPL(DBG_CILV, "%s - core_if(%p)\n", __func__, core_if);
+        if (NULL == core_if)
+                DWC_ERROR("reg request with NULL core_if\n");
+        DWC_DEBUGPL(DBG_CILV, "%s - core_if(%p)->dev_if(%p)\n", __func__,
+                    core_if, core_if->dev_if);
+        if (NULL == core_if->dev_if)
+                DWC_ERROR("reg request with NULL dev_if\n");
+        DWC_DEBUGPL(DBG_CILV, "%s - core_if(%p)->dev_if(%p)->"
+                    "dev_global_regs(%p)\n", __func__,
+                    core_if, core_if->dev_if,
+                    core_if->dev_if->dev_global_regs);
+        if (NULL == core_if->dev_if->dev_global_regs)
+                DWC_ERROR("reg request with NULL dev_global_regs\n");
+        else {
+                DWC_DEBUGPL(DBG_CILV, "%s - &core_if(%p)->dev_if(%p)->"
+                            "dev_global_regs(%p)->dcfg = %p\n", __func__,
+                            core_if, core_if->dev_if,
+                            core_if->dev_if->dev_global_regs,
+                            &core_if->dev_if->dev_global_regs->dcfg);
+		dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+        }
+	return dcfg.b.devspd;
+}
+
+void dwc_otg_set_devspeed(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	dcfg_data_t dcfg;
+	dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+	dcfg.b.devspd = val;
+	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
+}
+
+uint32_t dwc_otg_get_busconnected(dwc_otg_core_if_t * core_if)
+{
+	hprt0_data_t hprt0;
+	hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+	return hprt0.b.prtconnsts;
+}
+
+uint32_t dwc_otg_get_enumspeed(dwc_otg_core_if_t * core_if)
+{
+	dsts_data_t dsts;
+	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+	return dsts.b.enumspd;
+}
+
+uint32_t dwc_otg_get_prtpower(dwc_otg_core_if_t * core_if)
+{
+	hprt0_data_t hprt0;
+	hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+	return hprt0.b.prtpwr;
+
+}
+
+uint32_t dwc_otg_get_core_state(dwc_otg_core_if_t * core_if)
+{
+	return core_if->hibernation_suspend;
+}
+
+void dwc_otg_set_prtpower(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	hprt0_data_t hprt0;
+	hprt0.d32 = dwc_otg_read_hprt0(core_if);
+	hprt0.b.prtpwr = val;
+	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+}
+
+uint32_t dwc_otg_get_prtsuspend(dwc_otg_core_if_t * core_if)
+{
+	hprt0_data_t hprt0;
+	hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+	return hprt0.b.prtsusp;
+
+}
+
+void dwc_otg_set_prtsuspend(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	hprt0_data_t hprt0;
+	hprt0.d32 = dwc_otg_read_hprt0(core_if);
+	hprt0.b.prtsusp = val;
+	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+}
+
+uint32_t dwc_otg_get_fr_interval(dwc_otg_core_if_t * core_if)
+{
+	hfir_data_t hfir;
+	hfir.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hfir);
+	return hfir.b.frint;
+
+}
+
+void dwc_otg_set_fr_interval(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	hfir_data_t hfir;
+	uint32_t fram_int;
+	fram_int = calc_frame_interval(core_if);
+	hfir.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hfir);
+	if (!core_if->core_params->reload_ctl) {
+		DWC_WARN("\nCannot reload HFIR register.HFIR.HFIRRldCtrl bit is"
+			 "not set to 1.\nShould load driver with reload_ctl=1"
+			 " module parameter\n");
+		return;
+	}
+	switch (fram_int) {
+	case 3750:
+		if ((val < 3350) || (val > 4150)) {
+			DWC_WARN("HFIR interval for HS core and 30 MHz"
+				 "clock freq should be from 3350 to 4150\n");
+			return;
+		}
+		break;
+	case 30000:
+		if ((val < 26820) || (val > 33180)) {
+			DWC_WARN("HFIR interval for FS/LS core and 30 MHz"
+				 "clock freq should be from 26820 to 33180\n");
+			return;
+		}
+		break;
+	case 6000:
+		if ((val < 5360) || (val > 6640)) {
+			DWC_WARN("HFIR interval for HS core and 48 MHz"
+				 "clock freq should be from 5360 to 6640\n");
+			return;
+		}
+		break;
+	case 48000:
+		if ((val < 42912) || (val > 53088)) {
+			DWC_WARN("HFIR interval for FS/LS core and 48 MHz"
+				 "clock freq should be from 42912 to 53088\n");
+			return;
+		}
+		break;
+	case 7500:
+		if ((val < 6700) || (val > 8300)) {
+			DWC_WARN("HFIR interval for HS core and 60 MHz"
+				 "clock freq should be from 6700 to 8300\n");
+			return;
+		}
+		break;
+	case 60000:
+		if ((val < 53640) || (val > 65536)) {
+			DWC_WARN("HFIR interval for FS/LS core and 60 MHz"
+				 "clock freq should be from 53640 to 65536\n");
+			return;
+		}
+		break;
+	default:
+		DWC_WARN("Unknown frame interval\n");
+		return;
+		break;
+
+	}
+	hfir.b.frint = val;
+	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hfir, hfir.d32);
+}
+
+uint32_t dwc_otg_get_mode_ch_tim(dwc_otg_core_if_t * core_if)
+{
+	hcfg_data_t hcfg;
+	hcfg.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+	return hcfg.b.modechtimen;
+
+}
+
+void dwc_otg_set_mode_ch_tim(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	hcfg_data_t hcfg;
+	hcfg.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
+	hcfg.b.modechtimen = val;
+	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+}
+
+void dwc_otg_set_prtresume(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	hprt0_data_t hprt0;
+	hprt0.d32 = dwc_otg_read_hprt0(core_if);
+	hprt0.b.prtres = val;
+	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+}
+
+uint32_t dwc_otg_get_remotewakesig(dwc_otg_core_if_t * core_if)
+{
+	dctl_data_t dctl;
+	dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+	return dctl.b.rmtwkupsig;
+}
+
+uint32_t dwc_otg_get_lpm_portsleepstatus(dwc_otg_core_if_t * core_if)
+{
+	glpmcfg_data_t lpmcfg;
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+
+	DWC_ASSERT(!
+		   ((core_if->lx_state == DWC_OTG_L1) ^ lpmcfg.b.prt_sleep_sts),
+		   "lx_state = %d, lmpcfg.prt_sleep_sts = %d\n",
+		   core_if->lx_state, lpmcfg.b.prt_sleep_sts);
+
+	return lpmcfg.b.prt_sleep_sts;
+}
+
+uint32_t dwc_otg_get_lpm_remotewakeenabled(dwc_otg_core_if_t * core_if)
+{
+	glpmcfg_data_t lpmcfg;
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	return lpmcfg.b.rem_wkup_en;
+}
+
+uint32_t dwc_otg_get_lpmresponse(dwc_otg_core_if_t * core_if)
+{
+	glpmcfg_data_t lpmcfg;
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	return lpmcfg.b.appl_resp;
+}
+
+void dwc_otg_set_lpmresponse(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	glpmcfg_data_t lpmcfg;
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	lpmcfg.b.appl_resp = val;
+	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+}
+
+uint32_t dwc_otg_get_hsic_connect(dwc_otg_core_if_t * core_if)
+{
+	glpmcfg_data_t lpmcfg;
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	return lpmcfg.b.hsic_connect;
+}
+
+void dwc_otg_set_hsic_connect(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	glpmcfg_data_t lpmcfg;
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	lpmcfg.b.hsic_connect = val;
+	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+}
+
+uint32_t dwc_otg_get_inv_sel_hsic(dwc_otg_core_if_t * core_if)
+{
+	glpmcfg_data_t lpmcfg;
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	return lpmcfg.b.inv_sel_hsic;
+
+}
+
+void dwc_otg_set_inv_sel_hsic(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	glpmcfg_data_t lpmcfg;
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	lpmcfg.b.inv_sel_hsic = val;
+	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+}
+
+uint32_t dwc_otg_get_gotgctl(dwc_otg_core_if_t * core_if)
+{
+	return DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+}
+
+void dwc_otg_set_gotgctl(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	DWC_WRITE_REG32(&core_if->core_global_regs->gotgctl, val);
+}
+
+uint32_t dwc_otg_get_gusbcfg(dwc_otg_core_if_t * core_if)
+{
+	return DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+}
+
+void dwc_otg_set_gusbcfg(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, val);
+}
+
+uint32_t dwc_otg_get_grxfsiz(dwc_otg_core_if_t * core_if)
+{
+	return DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+}
+
+void dwc_otg_set_grxfsiz(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	DWC_WRITE_REG32(&core_if->core_global_regs->grxfsiz, val);
+}
+
+uint32_t dwc_otg_get_gnptxfsiz(dwc_otg_core_if_t * core_if)
+{
+	return DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz);
+}
+
+void dwc_otg_set_gnptxfsiz(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	DWC_WRITE_REG32(&core_if->core_global_regs->gnptxfsiz, val);
+}
+
+uint32_t dwc_otg_get_gpvndctl(dwc_otg_core_if_t * core_if)
+{
+	return DWC_READ_REG32(&core_if->core_global_regs->gpvndctl);
+}
+
+void dwc_otg_set_gpvndctl(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	DWC_WRITE_REG32(&core_if->core_global_regs->gpvndctl, val);
+}
+
+uint32_t dwc_otg_get_ggpio(dwc_otg_core_if_t * core_if)
+{
+	return DWC_READ_REG32(&core_if->core_global_regs->ggpio);
+}
+
+void dwc_otg_set_ggpio(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	DWC_WRITE_REG32(&core_if->core_global_regs->ggpio, val);
+}
+
+uint32_t dwc_otg_get_hprt0(dwc_otg_core_if_t * core_if)
+{
+	return DWC_READ_REG32(core_if->host_if->hprt0);
+
+}
+
+void dwc_otg_set_hprt0(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	DWC_WRITE_REG32(core_if->host_if->hprt0, val);
+}
+
+uint32_t dwc_otg_get_guid(dwc_otg_core_if_t * core_if)
+{
+	return DWC_READ_REG32(&core_if->core_global_regs->guid);
+}
+
+void dwc_otg_set_guid(dwc_otg_core_if_t * core_if, uint32_t val)
+{
+	DWC_WRITE_REG32(&core_if->core_global_regs->guid, val);
+}
+
+uint32_t dwc_otg_get_hptxfsiz(dwc_otg_core_if_t * core_if)
+{
+	return DWC_READ_REG32(&core_if->core_global_regs->hptxfsiz);
+}
+
+uint16_t dwc_otg_get_otg_version(dwc_otg_core_if_t * core_if)
+{
+	return ((core_if->otg_ver == 1) ? (uint16_t)0x0200 : (uint16_t)0x0103);
+}
+
+/**
+ * Start the SRP timer to detect when the SRP does not complete within
+ * 6 seconds.
+ *
+ * @param core_if the pointer to core_if strucure.
+ */
+void dwc_otg_pcd_start_srp_timer(dwc_otg_core_if_t * core_if)
+{
+	core_if->srp_timer_started = 1;
+	DWC_TIMER_SCHEDULE(core_if->srp_timer, 6000 /* 6 secs */ );
+}
+
+void dwc_otg_initiate_srp(dwc_otg_core_if_t * core_if)
+{
+	uint32_t *addr = (uint32_t *) & (core_if->core_global_regs->gotgctl);
+	gotgctl_data_t mem;
+	gotgctl_data_t val;
+
+	val.d32 = DWC_READ_REG32(addr);
+	if (val.b.sesreq) {
+		DWC_ERROR("Session Request Already active!\n");
+		return;
+	}
+
+	DWC_INFO("Session Request Initated\n");	//NOTICE
+	mem.d32 = DWC_READ_REG32(addr);
+	mem.b.sesreq = 1;
+	DWC_WRITE_REG32(addr, mem.d32);
+
+	/* Start the SRP timer */
+	dwc_otg_pcd_start_srp_timer(core_if);
+	return;
+}
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cil.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cil.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cil.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cil.h	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,1464 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil.h $
+ * $Revision: #123 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_CIL_H__)
+#define __DWC_CIL_H__
+
+#include "dwc_list.h"
+#include "dwc_otg_dbg.h"
+#include "dwc_otg_regs.h"
+
+#include "dwc_otg_core_if.h"
+#include "dwc_otg_adp.h"
+
+/**
+ * @file
+ * This file contains the interface to the Core Interface Layer.
+ */
+
+#ifdef DWC_UTE_CFI
+
+#define MAX_DMA_DESCS_PER_EP	256
+
+/**
+ * Enumeration for the data buffer mode
+ */
+typedef enum _data_buffer_mode {
+	BM_STANDARD = 0,	/* data buffer is in normal mode */
+	BM_SG = 1,		/* data buffer uses the scatter/gather mode */
+	BM_CONCAT = 2,		/* data buffer uses the concatenation mode */
+	BM_CIRCULAR = 3,	/* data buffer uses the circular DMA mode */
+	BM_ALIGN = 4		/* data buffer is in buffer alignment mode */
+} data_buffer_mode_e;
+#endif //DWC_UTE_CFI
+
+/** Macros defined for DWC OTG HW Release version */
+
+#define OTG_CORE_REV_2_60a	0x4F54260A
+#define OTG_CORE_REV_2_71a	0x4F54271A
+#define OTG_CORE_REV_2_72a	0x4F54272A
+#define OTG_CORE_REV_2_80a	0x4F54280A
+#define OTG_CORE_REV_2_81a	0x4F54281A
+#define OTG_CORE_REV_2_90a	0x4F54290A
+#define OTG_CORE_REV_2_91a	0x4F54291A
+#define OTG_CORE_REV_2_92a	0x4F54292A
+#define OTG_CORE_REV_2_93a	0x4F54293A
+#define OTG_CORE_REV_2_94a	0x4F54294A
+#define OTG_CORE_REV_3_00a	0x4F54300A
+
+/**
+ * Information for each ISOC packet.
+ */
+typedef struct iso_pkt_info {
+	uint32_t offset;
+	uint32_t length;
+	int32_t status;
+} iso_pkt_info_t;
+
+/**
+ * The <code>dwc_ep</code> structure represents the state of a single
+ * endpoint when acting in device mode. It contains the data items
+ * needed for an endpoint to be activated and transfer packets.
+ */
+typedef struct dwc_ep {
+	/** EP number used for register address lookup */
+	uint8_t num;
+	/** EP direction 0 = OUT */
+	unsigned is_in:1;
+	/** EP active. */
+	unsigned active:1;
+
+	/**
+	 * Periodic Tx FIFO # for IN EPs For INTR EP set to 0 to use non-periodic
+	 * Tx FIFO. If dedicated Tx FIFOs are enabled Tx FIFO # FOR IN EPs*/
+	unsigned tx_fifo_num:4;
+	/** EP type: 0 - Control, 1 - ISOC,	 2 - BULK,	3 - INTR */
+	unsigned type:2;
+#define DWC_OTG_EP_TYPE_CONTROL	   0
+#define DWC_OTG_EP_TYPE_ISOC	   1
+#define DWC_OTG_EP_TYPE_BULK	   2
+#define DWC_OTG_EP_TYPE_INTR	   3
+
+	/** DATA start PID for INTR and BULK EP */
+	unsigned data_pid_start:1;
+	/** Frame (even/odd) for ISOC EP */
+	unsigned even_odd_frame:1;
+	/** Max Packet bytes */
+	unsigned maxpacket:11;
+
+	/** Max Transfer size */
+	uint32_t maxxfer;
+
+	/** @name Transfer state */
+	/** @{ */
+
+	/**
+	 * Pointer to the beginning of the transfer buffer -- do not modify
+	 * during transfer.
+	 */
+
+	dwc_dma_t dma_addr;
+
+	dwc_dma_t dma_desc_addr;
+	dwc_otg_dev_dma_desc_t *desc_addr;
+
+	uint8_t *start_xfer_buff;
+	/** pointer to the transfer buffer */
+	uint8_t *xfer_buff;
+	/** Number of bytes to transfer */
+	unsigned xfer_len:19;
+	/** Number of bytes transferred. */
+	unsigned xfer_count:19;
+	/** Sent ZLP */
+	unsigned sent_zlp:1;
+	/** Total len for control transfer */
+	unsigned total_len:19;
+
+	/** stall clear flag */
+	unsigned stall_clear_flag:1;
+
+	/** SETUP pkt cnt rollover flag for EP0 out*/
+	unsigned stp_rollover;
+
+#ifdef DWC_UTE_CFI
+	/* The buffer mode */
+	data_buffer_mode_e buff_mode;
+
+	/* The chain of DMA descriptors.
+	 * MAX_DMA_DESCS_PER_EP will be allocated for each active EP.
+	 */
+	dwc_otg_dma_desc_t *descs;
+
+	/* The DMA address of the descriptors chain start */
+	dma_addr_t descs_dma_addr;
+	/** This variable stores the length of the last enqueued request */
+	uint32_t cfi_req_len;
+#endif				//DWC_UTE_CFI
+
+/** Max DMA Descriptor count for any EP */
+#define MAX_DMA_DESC_CNT 256
+	/** Allocated DMA Desc count */
+	uint32_t desc_cnt;
+
+	/** bInterval */
+	uint32_t bInterval;
+	/** Next frame num to setup next ISOC transfer */
+	uint32_t frame_num;
+	/** Indicates SOF number overrun in DSTS */
+	uint8_t frm_overrun;
+
+#ifdef DWC_UTE_PER_IO
+	/** Next frame num for which will be setup DMA Desc */
+	uint32_t xiso_frame_num;
+	/** bInterval */
+	uint32_t xiso_bInterval;
+	/** Count of currently active transfers - shall be either 0 or 1 */
+	int xiso_active_xfers;
+	int xiso_queued_xfers;
+#endif
+#ifdef DWC_EN_ISOC
+	/**
+	 * Variables specific for ISOC EPs
+	 *
+	 */
+	/** DMA addresses of ISOC buffers */
+	dwc_dma_t dma_addr0;
+	dwc_dma_t dma_addr1;
+
+	dwc_dma_t iso_dma_desc_addr;
+	dwc_otg_dev_dma_desc_t *iso_desc_addr;
+
+	/** pointer to the transfer buffers */
+	uint8_t *xfer_buff0;
+	uint8_t *xfer_buff1;
+
+	/** number of ISOC Buffer is processing */
+	uint32_t proc_buf_num;
+	/** Interval of ISOC Buffer processing */
+	uint32_t buf_proc_intrvl;
+	/** Data size for regular frame */
+	uint32_t data_per_frame;
+
+	/* todo - pattern data support is to be implemented in the future */
+	/** Data size for pattern frame */
+	uint32_t data_pattern_frame;
+	/** Frame number of pattern data */
+	uint32_t sync_frame;
+
+	/** bInterval */
+	uint32_t bInterval;
+	/** ISO Packet number per frame */
+	uint32_t pkt_per_frm;
+	/** Next frame num for which will be setup DMA Desc */
+	uint32_t next_frame;
+	/** Number of packets per buffer processing */
+	uint32_t pkt_cnt;
+	/** Info for all isoc packets */
+	iso_pkt_info_t *pkt_info;
+	/** current pkt number */
+	uint32_t cur_pkt;
+	/** current pkt number */
+	uint8_t *cur_pkt_addr;
+	/** current pkt number */
+	uint32_t cur_pkt_dma_addr;
+#endif				/* DWC_EN_ISOC */
+
+/** @} */
+} dwc_ep_t;
+
+/*
+ * Reasons for halting a host channel.
+ */
+typedef enum dwc_otg_halt_status {
+	DWC_OTG_HC_XFER_NO_HALT_STATUS,
+	DWC_OTG_HC_XFER_COMPLETE,
+	DWC_OTG_HC_XFER_URB_COMPLETE,
+	DWC_OTG_HC_XFER_ACK,
+	DWC_OTG_HC_XFER_NAK,
+	DWC_OTG_HC_XFER_NYET,
+	DWC_OTG_HC_XFER_STALL,
+	DWC_OTG_HC_XFER_XACT_ERR,
+	DWC_OTG_HC_XFER_FRAME_OVERRUN,
+	DWC_OTG_HC_XFER_BABBLE_ERR,
+	DWC_OTG_HC_XFER_DATA_TOGGLE_ERR,
+	DWC_OTG_HC_XFER_AHB_ERR,
+	DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE,
+	DWC_OTG_HC_XFER_URB_DEQUEUE
+} dwc_otg_halt_status_e;
+
+/**
+ * Host channel descriptor. This structure represents the state of a single
+ * host channel when acting in host mode. It contains the data items needed to
+ * transfer packets to an endpoint via a host channel.
+ */
+typedef struct dwc_hc {
+	/** Host channel number used for register address lookup */
+	uint8_t hc_num;
+
+	/** Device to access */
+	unsigned dev_addr:7;
+
+	/** EP to access */
+	unsigned ep_num:4;
+
+	/** EP direction. 0: OUT, 1: IN */
+	unsigned ep_is_in:1;
+
+	/**
+	 * EP speed.
+	 * One of the following values:
+	 *	- DWC_OTG_EP_SPEED_LOW
+	 *	- DWC_OTG_EP_SPEED_FULL
+	 *	- DWC_OTG_EP_SPEED_HIGH
+	 */
+	unsigned speed:2;
+#define DWC_OTG_EP_SPEED_LOW	0
+#define DWC_OTG_EP_SPEED_FULL	1
+#define DWC_OTG_EP_SPEED_HIGH	2
+
+	/**
+	 * Endpoint type.
+	 * One of the following values:
+	 *	- DWC_OTG_EP_TYPE_CONTROL: 0
+	 *	- DWC_OTG_EP_TYPE_ISOC: 1
+	 *	- DWC_OTG_EP_TYPE_BULK: 2
+	 *	- DWC_OTG_EP_TYPE_INTR: 3
+	 */
+	unsigned ep_type:2;
+
+	/** Max packet size in bytes */
+	unsigned max_packet:11;
+
+	/**
+	 * PID for initial transaction.
+	 * 0: DATA0,<br>
+	 * 1: DATA2,<br>
+	 * 2: DATA1,<br>
+	 * 3: MDATA (non-Control EP),
+	 *	  SETUP (Control EP)
+	 */
+	unsigned data_pid_start:2;
+#define DWC_OTG_HC_PID_DATA0 0
+#define DWC_OTG_HC_PID_DATA2 1
+#define DWC_OTG_HC_PID_DATA1 2
+#define DWC_OTG_HC_PID_MDATA 3
+#define DWC_OTG_HC_PID_SETUP 3
+
+	/** Number of periodic transactions per (micro)frame */
+	unsigned multi_count:2;
+
+	/** @name Transfer State */
+	/** @{ */
+
+	/** Pointer to the current transfer buffer position. */
+	uint8_t *xfer_buff;
+	/**
+	 * In Buffer DMA mode this buffer will be used
+	 * if xfer_buff is not DWORD aligned.
+	 */
+	dwc_dma_t align_buff;
+	/** Total number of bytes to transfer. */
+	uint32_t xfer_len;
+	/** Number of bytes transferred so far. */
+	uint32_t xfer_count;
+	/** Packet count at start of transfer.*/
+	uint16_t start_pkt_count;
+
+	/**
+	 * Flag to indicate whether the transfer has been started. Set to 1 if
+	 * it has been started, 0 otherwise.
+	 */
+	uint8_t xfer_started;
+
+	/**
+	 * Set to 1 to indicate that a PING request should be issued on this
+	 * channel. If 0, process normally.
+	 */
+	uint8_t do_ping;
+
+	/**
+	 * Set to 1 to indicate that the error count for this transaction is
+	 * non-zero. Set to 0 if the error count is 0.
+	 */
+	uint8_t error_state;
+
+	/**
+	 * Set to 1 to indicate that this channel should be halted the next
+	 * time a request is queued for the channel. This is necessary in
+	 * slave mode if no request queue space is available when an attempt
+	 * is made to halt the channel.
+	 */
+	uint8_t halt_on_queue;
+
+	/**
+	 * Set to 1 if the host channel has been halted, but the core is not
+	 * finished flushing queued requests. Otherwise 0.
+	 */
+	uint8_t halt_pending;
+
+	/**
+	 * Reason for halting the host channel.
+	 */
+	dwc_otg_halt_status_e halt_status;
+
+	/*
+	 * Split settings for the host channel
+	 */
+	uint8_t do_split;		   /**< Enable split for the channel */
+	uint8_t complete_split;	   /**< Enable complete split */
+	uint8_t hub_addr;		   /**< Address of high speed hub */
+
+	uint8_t port_addr;		   /**< Port of the low/full speed device */
+	/** Split transaction position
+	 * One of the following values:
+	 *	  - DWC_HCSPLIT_XACTPOS_MID
+	 *	  - DWC_HCSPLIT_XACTPOS_BEGIN
+	 *	  - DWC_HCSPLIT_XACTPOS_END
+	 *	  - DWC_HCSPLIT_XACTPOS_ALL */
+	uint8_t xact_pos;
+
+	/** Set when the host channel does a short read. */
+	uint8_t short_read;
+
+	/**
+	 * Number of requests issued for this channel since it was assigned to
+	 * the current transfer (not counting PINGs).
+	 */
+	uint8_t requests;
+
+	/**
+	 * Queue Head for the transfer being processed by this channel.
+	 */
+	struct dwc_otg_qh *qh;
+
+	/** @} */
+
+	/** Entry in list of host channels. */
+	 DWC_CIRCLEQ_ENTRY(dwc_hc) hc_list_entry;
+
+	/** @name Descriptor DMA support */
+	/** @{ */
+
+	/** Number of Transfer Descriptors */
+	uint16_t ntd;
+
+	/** Descriptor List DMA address */
+	dwc_dma_t desc_list_addr;
+
+	/** Scheduling micro-frame bitmap. */
+	uint8_t schinfo;
+
+	/** @} */
+} dwc_hc_t;
+
+/**
+ * The following parameters may be specified when starting the module. These
+ * parameters define how the DWC_otg controller should be configured.
+ */
+typedef struct dwc_otg_core_params {
+	int32_t opt;
+
+	/**
+	 * Specifies the OTG capabilities. The driver will automatically
+	 * detect the value for this parameter if none is specified.
+	 * 0 - HNP and SRP capable (default)
+	 * 1 - SRP Only capable
+	 * 2 - No HNP/SRP capable
+	 */
+	int32_t otg_cap;
+
+	/**
+	 * Specifies whether to use slave or DMA mode for accessing the data
+	 * FIFOs. The driver will automatically detect the value for this
+	 * parameter if none is specified.
+	 * 0 - Slave
+	 * 1 - DMA (default, if available)
+	 */
+	int32_t dma_enable;
+
+	/**
+	 * When DMA mode is enabled specifies whether to use address DMA or DMA
+	 * Descriptor mode for accessing the data FIFOs in device mode. The driver
+	 * will automatically detect the value for this if none is specified.
+	 * 0 - address DMA
+	 * 1 - DMA Descriptor(default, if available)
+	 */
+	int32_t dma_desc_enable;
+	/** The DMA Burst size (applicable only for External DMA
+	 * Mode). 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+	 */
+	int32_t dma_burst_size;	/* Translate this to GAHBCFG values */
+
+	/**
+	 * Specifies the maximum speed of operation in host and device mode.
+	 * The actual speed depends on the speed of the attached device and
+	 * the value of phy_type. The actual speed depends on the speed of the
+	 * attached device.
+	 * 0 - High Speed (default)
+	 * 1 - Full Speed
+	 */
+	int32_t speed;
+	/** Specifies whether low power mode is supported when attached
+	 *	to a Full Speed or Low Speed device in host mode.
+	 * 0 - Don't support low power mode (default)
+	 * 1 - Support low power mode
+	 */
+	int32_t host_support_fs_ls_low_power;
+
+	/** Specifies the PHY clock rate in low power mode when connected to a
+	 * Low Speed device in host mode. This parameter is applicable only if
+	 * HOST_SUPPORT_FS_LS_LOW_POWER is enabled. If PHY_TYPE is set to FS
+	 * then defaults to 6 MHZ otherwise 48 MHZ.
+	 *
+	 * 0 - 48 MHz
+	 * 1 - 6 MHz
+	 */
+	int32_t host_ls_low_power_phy_clk;
+
+	/**
+	 * 0 - Use cC FIFO size parameters
+	 * 1 - Allow dynamic FIFO sizing (default)
+	 */
+	int32_t enable_dynamic_fifo;
+
+	/** Total number of 4-byte words in the data FIFO memory. This
+	 * memory includes the Rx FIFO, non-periodic Tx FIFO, and periodic
+	 * Tx FIFOs.
+	 * 32 to 32768 (default 8192)
+	 * Note: The total FIFO memory depth in the FPGA configuration is 8192.
+	 */
+	int32_t data_fifo_size;
+
+	/** Number of 4-byte words in the Rx FIFO in device mode when dynamic
+	 * FIFO sizing is enabled.
+	 * 16 to 32768 (default 1064)
+	 */
+	int32_t dev_rx_fifo_size;
+
+	/** Number of 4-byte words in the non-periodic Tx FIFO in device mode
+	 * when dynamic FIFO sizing is enabled.
+	 * 16 to 32768 (default 1024)
+	 */
+	int32_t dev_nperio_tx_fifo_size;
+
+	/** Number of 4-byte words in each of the periodic Tx FIFOs in device
+	 * mode when dynamic FIFO sizing is enabled.
+	 * 4 to 768 (default 256)
+	 */
+	uint32_t dev_perio_tx_fifo_size[MAX_PERIO_FIFOS];
+
+	/** Number of 4-byte words in the Rx FIFO in host mode when dynamic
+	 * FIFO sizing is enabled.
+	 * 16 to 32768 (default 1024)
+	 */
+	int32_t host_rx_fifo_size;
+
+	/** Number of 4-byte words in the non-periodic Tx FIFO in host mode
+	 * when Dynamic FIFO sizing is enabled in the core.
+	 * 16 to 32768 (default 1024)
+	 */
+	int32_t host_nperio_tx_fifo_size;
+
+	/** Number of 4-byte words in the host periodic Tx FIFO when dynamic
+	 * FIFO sizing is enabled.
+	 * 16 to 32768 (default 1024)
+	 */
+	int32_t host_perio_tx_fifo_size;
+
+	/** The maximum transfer size supported in bytes.
+	 * 2047 to 65,535  (default 65,535)
+	 */
+	int32_t max_transfer_size;
+
+	/** The maximum number of packets in a transfer.
+	 * 15 to 511  (default 511)
+	 */
+	int32_t max_packet_count;
+
+	/** The number of host channel registers to use.
+	 * 1 to 16 (default 12)
+	 * Note: The FPGA configuration supports a maximum of 12 host channels.
+	 */
+	int32_t host_channels;
+
+	/** The number of endpoints in addition to EP0 available for device
+	 * mode operations.
+	 * 1 to 15 (default 6 IN and OUT)
+	 * Note: The FPGA configuration supports a maximum of 6 IN and OUT
+	 * endpoints in addition to EP0.
+	 */
+	int32_t dev_endpoints;
+
+		/**
+		 * Specifies the type of PHY interface to use. By default, the driver
+		 * will automatically detect the phy_type.
+		 *
+		 * 0 - Full Speed PHY
+		 * 1 - UTMI+ (default)
+		 * 2 - ULPI
+		 */
+	int32_t phy_type;
+
+	/**
+	 * Specifies the UTMI+ Data Width. This parameter is
+	 * applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI
+	 * PHY_TYPE, this parameter indicates the data width between
+	 * the MAC and the ULPI Wrapper.) Also, this parameter is
+	 * applicable only if the OTG_HSPHY_WIDTH cC parameter was set
+	 * to "8 and 16 bits", meaning that the core has been
+	 * configured to work at either data path width.
+	 *
+	 * 8 or 16 bits (default 16)
+	 */
+	int32_t phy_utmi_width;
+
+	/**
+	 * Specifies whether the ULPI operates at double or single
+	 * data rate. This parameter is only applicable if PHY_TYPE is
+	 * ULPI.
+	 *
+	 * 0 - single data rate ULPI interface with 8 bit wide data
+	 * bus (default)
+	 * 1 - double data rate ULPI interface with 4 bit wide data
+	 * bus
+	 */
+	int32_t phy_ulpi_ddr;
+
+	/**
+	 * Specifies whether to use the internal or external supply to
+	 * drive the vbus with a ULPI phy.
+	 */
+	int32_t phy_ulpi_ext_vbus;
+
+	/**
+	 * Specifies whether to use the I2Cinterface for full speed PHY. This
+	 * parameter is only applicable if PHY_TYPE is FS.
+	 * 0 - No (default)
+	 * 1 - Yes
+	 */
+	int32_t i2c_enable;
+
+	int32_t ulpi_fs_ls;
+
+	int32_t ts_dline;
+
+	/**
+	 * Specifies whether dedicated transmit FIFOs are
+	 * enabled for non periodic IN endpoints in device mode
+	 * 0 - No
+	 * 1 - Yes
+	 */
+	int32_t en_multiple_tx_fifo;
+
+	/** Number of 4-byte words in each of the Tx FIFOs in device
+	 * mode when dynamic FIFO sizing is enabled.
+	 * 4 to 768 (default 256)
+	 */
+	uint32_t dev_tx_fifo_size[MAX_TX_FIFOS];
+
+	/** Thresholding enable flag-
+	 * bit 0 - enable non-ISO Tx thresholding
+	 * bit 1 - enable ISO Tx thresholding
+	 * bit 2 - enable Rx thresholding
+	 */
+	uint32_t thr_ctl;
+
+	/** Thresholding length for Tx
+	 *	FIFOs in 32 bit DWORDs
+	 */
+	uint32_t tx_thr_length;
+
+	/** Thresholding length for Rx
+	 *	FIFOs in 32 bit DWORDs
+	 */
+	uint32_t rx_thr_length;
+
+	/**
+	 * Specifies whether LPM (Link Power Management) support is enabled
+	 */
+	int32_t lpm_enable;
+
+	/** Per Transfer Interrupt
+	 *	mode enable flag
+	 * 1 - Enabled
+	 * 0 - Disabled
+	 */
+	int32_t pti_enable;
+
+	/** Multi Processor Interrupt
+	 *	mode enable flag
+	 * 1 - Enabled
+	 * 0 - Disabled
+	 */
+	int32_t mpi_enable;
+
+	/** IS_USB Capability
+	 * 1 - Enabled
+	 * 0 - Disabled
+	 */
+	int32_t ic_usb_cap;
+
+	/** AHB Threshold Ratio
+	 * 2'b00 AHB Threshold = 	MAC Threshold
+	 * 2'b01 AHB Threshold = 1/2 	MAC Threshold
+	 * 2'b10 AHB Threshold = 1/4	MAC Threshold
+	 * 2'b11 AHB Threshold = 1/8	MAC Threshold
+	 */
+	int32_t ahb_thr_ratio;
+
+	/** ADP Support
+	 * 1 - Enabled
+	 * 0 - Disabled
+	 */
+	int32_t adp_supp_enable;
+
+	/** HFIR Reload Control
+	 * 0 - The HFIR cannot be reloaded dynamically.
+	 * 1 - Allow dynamic reloading of the HFIR register during runtime.
+	 */
+	int32_t reload_ctl;
+
+	/** DCFG: Enable device Out NAK
+	 * 0 - The core does not set NAK after Bulk Out transfer complete.
+	 * 1 - The core sets NAK after Bulk OUT transfer complete.
+	 */
+	int32_t dev_out_nak;
+
+	/** DCFG: Enable Continue on BNA
+	 * After receiving BNA interrupt the core disables the endpoint,when the
+	 * endpoint is re-enabled by the application the core starts processing
+	 * 0 - from the DOEPDMA descriptor
+	 * 1 - from the descriptor which received the BNA.
+	 */
+	int32_t cont_on_bna;
+
+	/** GAHBCFG: AHB Single Support
+	 * This bit when programmed supports SINGLE transfers for remainder
+	 * data in a transfer for DMA mode of operation.
+	 * 0 - in this case the remainder data will be sent using INCR burst size.
+	 * 1 - in this case the remainder data will be sent using SINGLE burst size.
+	 */
+	int32_t ahb_single;
+
+	/** Core Power down mode
+	 * 0 - No Power Down is enabled
+	 * 1 - Reserved
+	 * 2 - Complete Power Down (Hibernation)
+	 */
+	int32_t power_down;
+
+	/** OTG revision supported
+	 * 0 - OTG 1.3 revision
+	 * 1 - OTG 2.0 revision
+	 */
+	int32_t otg_ver;
+
+} dwc_otg_core_params_t;
+
+#ifdef DEBUG
+struct dwc_otg_core_if;
+typedef struct hc_xfer_info {
+	struct dwc_otg_core_if *core_if;
+	dwc_hc_t *hc;
+} hc_xfer_info_t;
+#endif
+
+typedef struct ep_xfer_info {
+	struct dwc_otg_core_if *core_if;
+	dwc_ep_t *ep;
+	uint8_t state;
+} ep_xfer_info_t;
+/*
+ * Device States
+ */
+typedef enum dwc_otg_lx_state {
+	/** On state */
+	DWC_OTG_L0,
+	/** LPM sleep state*/
+	DWC_OTG_L1,
+	/** USB suspend state*/
+	DWC_OTG_L2,
+	/** Off state*/
+	DWC_OTG_L3
+} dwc_otg_lx_state_e;
+
+struct dwc_otg_global_regs_backup {
+	uint32_t gotgctl_local;
+	uint32_t gintmsk_local;
+	uint32_t gahbcfg_local;
+	uint32_t gusbcfg_local;
+	uint32_t grxfsiz_local;
+	uint32_t gnptxfsiz_local;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	uint32_t glpmcfg_local;
+#endif
+	uint32_t gi2cctl_local;
+	uint32_t hptxfsiz_local;
+	uint32_t pcgcctl_local;
+	uint32_t gdfifocfg_local;
+	uint32_t dtxfsiz_local[MAX_EPS_CHANNELS];
+	uint32_t gpwrdn_local;
+	uint32_t xhib_pcgcctl;
+	uint32_t xhib_gpwrdn;
+};
+
+struct dwc_otg_host_regs_backup {
+	uint32_t hcfg_local;
+	uint32_t haintmsk_local;
+	uint32_t hcintmsk_local[MAX_EPS_CHANNELS];
+	uint32_t hprt0_local;
+	uint32_t hfir_local;
+};
+
+struct dwc_otg_dev_regs_backup {
+	uint32_t dcfg;
+	uint32_t dctl;
+	uint32_t daintmsk;
+	uint32_t diepmsk;
+	uint32_t doepmsk;
+	uint32_t diepctl[MAX_EPS_CHANNELS];
+	uint32_t dieptsiz[MAX_EPS_CHANNELS];
+	uint32_t diepdma[MAX_EPS_CHANNELS];
+};
+/**
+ * The <code>dwc_otg_core_if</code> structure contains information needed to manage
+ * the DWC_otg controller acting in either host or device mode. It
+ * represents the programming view of the controller as a whole.
+ */
+struct dwc_otg_core_if {
+	/** Parameters that define how the core should be configured.*/
+	dwc_otg_core_params_t *core_params;
+
+	/** Core Global registers starting at offset 000h. */
+	dwc_otg_core_global_regs_t *core_global_regs;
+
+	/** Device-specific information */
+	dwc_otg_dev_if_t *dev_if;
+	/** Host-specific information */
+	dwc_otg_host_if_t *host_if;
+
+	/** Value from SNPSID register */
+	uint32_t snpsid;
+
+	/*
+	 * Set to 1 if the core PHY interface bits in USBCFG have been
+	 * initialized.
+	 */
+	uint8_t phy_init_done;
+
+	/*
+	 * SRP Success flag, set by srp success interrupt in FS I2C mode
+	 */
+	uint8_t srp_success;
+	uint8_t srp_timer_started;
+	/** Timer for SRP. If it expires before SRP is successful
+	 * clear the SRP. */
+	dwc_timer_t *srp_timer;
+
+#ifdef DWC_DEV_SRPCAP
+	/* This timer is needed to power on the hibernated host core if SRP is not
+	 * initiated on connected SRP capable device for limited period of time
+	 */
+	uint8_t pwron_timer_started;
+	dwc_timer_t *pwron_timer;
+#endif
+	/* Common configuration information */
+	/** Power and Clock Gating Control Register */
+	volatile uint32_t *pcgcctl;
+#define DWC_OTG_PCGCCTL_OFFSET 0xE00
+
+	/** Push/pop addresses for endpoints or host channels.*/
+	uint32_t *data_fifo[MAX_EPS_CHANNELS];
+#define DWC_OTG_DATA_FIFO_OFFSET 0x1000
+#define DWC_OTG_DATA_FIFO_SIZE 0x1000
+
+	/** Total RAM for FIFOs (Bytes) */
+	uint16_t total_fifo_size;
+	/** Size of Rx FIFO (Bytes) */
+	uint16_t rx_fifo_size;
+	/** Size of Non-periodic Tx FIFO (Bytes) */
+	uint16_t nperio_tx_fifo_size;
+
+	/** 1 if DMA is enabled, 0 otherwise. */
+	uint8_t dma_enable;
+
+	/** 1 if DMA descriptor is enabled, 0 otherwise. */
+	uint8_t dma_desc_enable;
+
+	/** 1 if PTI Enhancement mode is enabled, 0 otherwise. */
+	uint8_t pti_enh_enable;
+
+	/** 1 if MPI Enhancement mode is enabled, 0 otherwise. */
+	uint8_t multiproc_int_enable;
+
+	/** 1 if dedicated Tx FIFOs are enabled, 0 otherwise. */
+	uint8_t en_multiple_tx_fifo;
+
+	/** Set to 1 if multiple packets of a high-bandwidth transfer is in
+	 * process of being queued */
+	uint8_t queuing_high_bandwidth;
+
+	/** Hardware Configuration -- stored here for convenience.*/
+	hwcfg1_data_t hwcfg1;
+	hwcfg2_data_t hwcfg2;
+	hwcfg3_data_t hwcfg3;
+	hwcfg4_data_t hwcfg4;
+	fifosize_data_t hptxfsiz;
+
+	/** Host and Device Configuration -- stored here for convenience.*/
+	hcfg_data_t hcfg;
+	dcfg_data_t dcfg;
+
+	/** The operational State, during transations
+	 * (a_host>>a_peripherial and b_device=>b_host) this may not
+	 * match the core but allows the software to determine
+	 * transitions.
+	 */
+	uint8_t op_state;
+
+	/**
+	 * Set to 1 if the HCD needs to be restarted on a session request
+	 * interrupt. This is required if no connector ID status change has
+	 * occurred since the HCD was last disconnected.
+	 */
+	uint8_t restart_hcd_on_session_req;
+
+	/** HCD callbacks */
+	/** A-Device is a_host */
+#define A_HOST		(1)
+	/** A-Device is a_suspend */
+#define A_SUSPEND	(2)
+	/** A-Device is a_peripherial */
+#define A_PERIPHERAL	(3)
+	/** B-Device is operating as a Peripheral. */
+#define B_PERIPHERAL	(4)
+	/** B-Device is operating as a Host. */
+#define B_HOST		(5)
+
+	/** HCD callbacks */
+	struct dwc_otg_cil_callbacks *hcd_cb;
+	/** PCD callbacks */
+	struct dwc_otg_cil_callbacks *pcd_cb;
+
+	/** Device mode Periodic Tx FIFO Mask */
+	uint32_t p_tx_msk;
+	/** Device mode Periodic Tx FIFO Mask */
+	uint32_t tx_msk;
+
+	/** Workqueue object used for handling several interrupts */
+	dwc_workq_t *wq_otg;
+
+	/** Timer object used for handling "Wakeup Detected" Interrupt */
+	dwc_timer_t *wkp_timer;
+	/** This arrays used for debug purposes for DEV OUT NAK enhancement */
+	uint32_t start_doeptsiz_val[MAX_EPS_CHANNELS];
+	ep_xfer_info_t ep_xfer_info[MAX_EPS_CHANNELS];
+	dwc_timer_t *ep_xfer_timer[MAX_EPS_CHANNELS];
+#ifdef DEBUG
+	uint32_t start_hcchar_val[MAX_EPS_CHANNELS];
+
+	hc_xfer_info_t hc_xfer_info[MAX_EPS_CHANNELS];
+	dwc_timer_t *hc_xfer_timer[MAX_EPS_CHANNELS];
+
+	uint32_t hfnum_7_samples;
+	uint64_t hfnum_7_frrem_accum;
+	uint32_t hfnum_0_samples;
+	uint64_t hfnum_0_frrem_accum;
+	uint32_t hfnum_other_samples;
+	uint64_t hfnum_other_frrem_accum;
+#endif
+
+#ifdef DWC_UTE_CFI
+	uint16_t pwron_rxfsiz;
+	uint16_t pwron_gnptxfsiz;
+	uint16_t pwron_txfsiz[15];
+
+	uint16_t init_rxfsiz;
+	uint16_t init_gnptxfsiz;
+	uint16_t init_txfsiz[15];
+#endif
+
+	/** Lx state of device */
+	dwc_otg_lx_state_e lx_state;
+
+	/** Saved Core Global registers */
+	struct dwc_otg_global_regs_backup *gr_backup;
+	/** Saved Host registers */
+	struct dwc_otg_host_regs_backup *hr_backup;
+	/** Saved Device registers */
+	struct dwc_otg_dev_regs_backup *dr_backup;
+
+	/** Power Down Enable */
+	uint32_t power_down;
+
+	/** ADP support Enable */
+	uint32_t adp_enable;
+
+	/** ADP structure object */
+	dwc_otg_adp_t adp;
+
+	/** hibernation/suspend flag */
+	int hibernation_suspend;
+
+	/** Device mode extended hibernation flag */
+	int xhib;
+
+	/** OTG revision supported */
+	uint32_t otg_ver;
+
+	/** OTG status flag used for HNP polling */
+	uint8_t otg_sts;
+
+	/** Pointer to either hcd->lock or pcd->lock */
+	dwc_spinlock_t *lock;
+
+	/** Start predict NextEP based on Learning Queue if equal 1,
+	 * also used as counter of disabled NP IN EP's */
+	uint8_t start_predict;
+
+	/** NextEp sequence, including EP0: nextep_seq[] = EP if non-periodic and
+	 * active, 0xff otherwise */
+	uint8_t nextep_seq[MAX_EPS_CHANNELS];
+
+	/** Index of fisrt EP in nextep_seq array which should be re-enabled **/
+	uint8_t first_in_nextep_seq;
+
+	/** Frame number while entering to ISR - needed for ISOCs **/
+	uint32_t frame_num;
+
+};
+
+#ifdef DEBUG
+/*
+ * This function is called when transfer is timed out.
+ */
+extern void hc_xfer_timeout(void *ptr);
+#endif
+
+/*
+ * This function is called when transfer is timed out on endpoint.
+ */
+extern void ep_xfer_timeout(void *ptr);
+
+/*
+ * The following functions are functions for works
+ * using during handling some interrupts
+ */
+extern void w_conn_id_status_change(void *p);
+
+extern void w_wakeup_detected(void *p);
+
+/** Saves global register values into system memory. */
+extern int dwc_otg_save_global_regs(dwc_otg_core_if_t * core_if);
+/** Saves device register values into system memory. */
+extern int dwc_otg_save_dev_regs(dwc_otg_core_if_t * core_if);
+/** Saves host register values into system memory. */
+extern int dwc_otg_save_host_regs(dwc_otg_core_if_t * core_if);
+/** Restore global register values. */
+extern int dwc_otg_restore_global_regs(dwc_otg_core_if_t * core_if);
+/** Restore host register values. */
+extern int dwc_otg_restore_host_regs(dwc_otg_core_if_t * core_if, int reset);
+/** Restore device register values. */
+extern int dwc_otg_restore_dev_regs(dwc_otg_core_if_t * core_if,
+				    int rem_wakeup);
+extern int restore_lpm_i2c_regs(dwc_otg_core_if_t * core_if);
+extern int restore_essential_regs(dwc_otg_core_if_t * core_if, int rmode,
+				  int is_host);
+
+extern int dwc_otg_host_hibernation_restore(dwc_otg_core_if_t * core_if,
+					    int restore_mode, int reset);
+extern int dwc_otg_device_hibernation_restore(dwc_otg_core_if_t * core_if,
+					      int rem_wakeup, int reset);
+
+/*
+ * The following functions support initialization of the CIL driver component
+ * and the DWC_otg controller.
+ */
+extern void dwc_otg_core_host_init(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_core_dev_init(dwc_otg_core_if_t * _core_if);
+
+/** @name Device CIL Functions
+ * The following functions support managing the DWC_otg controller in device
+ * mode.
+ */
+/**@{*/
+extern void dwc_otg_wakeup(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_read_setup_packet(dwc_otg_core_if_t * _core_if,
+				      uint32_t * _dest);
+extern uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_ep0_activate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
+extern void dwc_otg_ep_activate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
+extern void dwc_otg_ep_deactivate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
+extern void dwc_otg_ep_start_transfer(dwc_otg_core_if_t * _core_if,
+				      dwc_ep_t * _ep);
+extern void dwc_otg_ep_start_zl_transfer(dwc_otg_core_if_t * _core_if,
+					 dwc_ep_t * _ep);
+extern void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t * _core_if,
+				       dwc_ep_t * _ep);
+extern void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t * _core_if,
+					  dwc_ep_t * _ep);
+extern void dwc_otg_ep_write_packet(dwc_otg_core_if_t * _core_if,
+				    dwc_ep_t * _ep, int _dma);
+extern void dwc_otg_ep_set_stall(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
+extern void dwc_otg_ep_clear_stall(dwc_otg_core_if_t * _core_if,
+				   dwc_ep_t * _ep);
+extern void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t * _core_if);
+
+#ifdef DWC_EN_ISOC
+extern void dwc_otg_iso_ep_start_frm_transfer(dwc_otg_core_if_t * core_if,
+					      dwc_ep_t * ep);
+extern void dwc_otg_iso_ep_start_buf_transfer(dwc_otg_core_if_t * core_if,
+					      dwc_ep_t * ep);
+#endif /* DWC_EN_ISOC */
+/**@}*/
+
+/** @name Host CIL Functions
+ * The following functions support managing the DWC_otg controller in host
+ * mode.
+ */
+/**@{*/
+extern void dwc_otg_hc_init(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc);
+extern void dwc_otg_hc_halt(dwc_otg_core_if_t * _core_if,
+			    dwc_hc_t * _hc, dwc_otg_halt_status_e _halt_status);
+extern void dwc_otg_hc_cleanup(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc);
+extern void dwc_otg_hc_start_transfer(dwc_otg_core_if_t * _core_if,
+				      dwc_hc_t * _hc);
+extern int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t * _core_if,
+					dwc_hc_t * _hc);
+extern void dwc_otg_hc_do_ping(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc);
+extern void dwc_otg_hc_write_packet(dwc_otg_core_if_t * _core_if,
+				    dwc_hc_t * _hc);
+extern void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t * _core_if);
+
+extern void dwc_otg_hc_start_transfer_ddma(dwc_otg_core_if_t * core_if,
+					   dwc_hc_t * hc);
+
+extern uint32_t calc_frame_interval(dwc_otg_core_if_t * core_if);
+
+/* Macro used to clear one channel interrupt */
+#define clear_hc_int(_hc_regs_, _intr_) \
+do { \
+	hcint_data_t hcint_clear = {.d32 = 0}; \
+	hcint_clear.b._intr_ = 1; \
+	DWC_WRITE_REG32(&(_hc_regs_)->hcint, hcint_clear.d32); \
+} while (0)
+
+/*
+ * Macro used to disable one channel interrupt. Channel interrupts are
+ * disabled when the channel is halted or released by the interrupt handler.
+ * There is no need to handle further interrupts of that type until the
+ * channel is re-assigned. In fact, subsequent handling may cause crashes
+ * because the channel structures are cleaned up when the channel is released.
+ */
+#define disable_hc_int(_hc_regs_, _intr_) \
+do { \
+	hcintmsk_data_t hcintmsk = {.d32 = 0}; \
+	hcintmsk.b._intr_ = 1; \
+	DWC_MODIFY_REG32(&(_hc_regs_)->hcintmsk, hcintmsk.d32, 0); \
+} while (0)
+
+/**
+ * This function Reads HPRT0 in preparation to modify. It keeps the
+ * WC bits 0 so that if they are read as 1, they won't clear when you
+ * write it back
+ */
+static inline uint32_t dwc_otg_read_hprt0(dwc_otg_core_if_t * _core_if)
+{
+	hprt0_data_t hprt0;
+	hprt0.d32 = DWC_READ_REG32(_core_if->host_if->hprt0);
+	hprt0.b.prtena = 0;
+	hprt0.b.prtconndet = 0;
+	hprt0.b.prtenchng = 0;
+	hprt0.b.prtovrcurrchng = 0;
+	return hprt0.d32;
+}
+
+/**@}*/
+
+/** @name Common CIL Functions
+ * The following functions support managing the DWC_otg controller in either
+ * device or host mode.
+ */
+/**@{*/
+
+extern void dwc_otg_read_packet(dwc_otg_core_if_t * core_if,
+				uint8_t * dest, uint16_t bytes);
+
+extern void dwc_otg_flush_tx_fifo(dwc_otg_core_if_t * _core_if, const int _num);
+extern void dwc_otg_flush_rx_fifo(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_core_reset(dwc_otg_core_if_t * _core_if);
+
+/**
+ * This function returns the Core Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_core_intr(dwc_otg_core_if_t * core_if)
+{
+	return (DWC_READ_REG32(&core_if->core_global_regs->gintsts) &
+		DWC_READ_REG32(&core_if->core_global_regs->gintmsk));
+}
+
+/**
+ * This function returns the OTG Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_otg_intr(dwc_otg_core_if_t * core_if)
+{
+	return (DWC_READ_REG32(&core_if->core_global_regs->gotgint));
+}
+
+/**
+ * This function reads the Device All Endpoints Interrupt register and
+ * returns the IN endpoint interrupt bits.
+ */
+static inline uint32_t dwc_otg_read_dev_all_in_ep_intr(dwc_otg_core_if_t *
+						       core_if)
+{
+
+	uint32_t v;
+
+	if (core_if->multiproc_int_enable) {
+		v = DWC_READ_REG32(&core_if->dev_if->
+				   dev_global_regs->deachint) &
+		    DWC_READ_REG32(&core_if->
+				   dev_if->dev_global_regs->deachintmsk);
+	} else {
+		v = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daint) &
+		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daintmsk);
+	}
+	return (v & 0xffff);
+}
+
+/**
+ * This function reads the Device All Endpoints Interrupt register and
+ * returns the OUT endpoint interrupt bits.
+ */
+static inline uint32_t dwc_otg_read_dev_all_out_ep_intr(dwc_otg_core_if_t *
+							core_if)
+{
+	uint32_t v;
+
+	if (core_if->multiproc_int_enable) {
+		v = DWC_READ_REG32(&core_if->dev_if->
+				   dev_global_regs->deachint) &
+		    DWC_READ_REG32(&core_if->
+				   dev_if->dev_global_regs->deachintmsk);
+	} else {
+		v = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daint) &
+		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daintmsk);
+	}
+
+	return ((v & 0xffff0000) >> 16);
+}
+
+/**
+ * This function returns the Device IN EP Interrupt register
+ */
+static inline uint32_t dwc_otg_read_dev_in_ep_intr(dwc_otg_core_if_t * core_if,
+						   dwc_ep_t * ep)
+{
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	uint32_t v, msk, emp;
+
+	if (core_if->multiproc_int_enable) {
+		msk =
+		    DWC_READ_REG32(&dev_if->
+				   dev_global_regs->diepeachintmsk[ep->num]);
+		emp =
+		    DWC_READ_REG32(&dev_if->
+				   dev_global_regs->dtknqr4_fifoemptymsk);
+		msk |= ((emp >> ep->num) & 0x1) << 7;
+		v = DWC_READ_REG32(&dev_if->in_ep_regs[ep->num]->diepint) & msk;
+	} else {
+		msk = DWC_READ_REG32(&dev_if->dev_global_regs->diepmsk);
+		emp =
+		    DWC_READ_REG32(&dev_if->
+				   dev_global_regs->dtknqr4_fifoemptymsk);
+		msk |= ((emp >> ep->num) & 0x1) << 7;
+		v = DWC_READ_REG32(&dev_if->in_ep_regs[ep->num]->diepint) & msk;
+	}
+
+	return v;
+}
+
+/**
+ * This function returns the Device OUT EP Interrupt register
+ */
+static inline uint32_t dwc_otg_read_dev_out_ep_intr(dwc_otg_core_if_t *
+						    _core_if, dwc_ep_t * _ep)
+{
+	dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+	uint32_t v;
+	doepmsk_data_t msk = {.d32 = 0 };
+
+	if (_core_if->multiproc_int_enable) {
+		msk.d32 =
+		    DWC_READ_REG32(&dev_if->
+				   dev_global_regs->doepeachintmsk[_ep->num]);
+		if (_core_if->pti_enh_enable) {
+			msk.b.pktdrpsts = 1;
+		}
+		v = DWC_READ_REG32(&dev_if->
+				   out_ep_regs[_ep->num]->doepint) & msk.d32;
+	} else {
+		msk.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->doepmsk);
+		if (_core_if->pti_enh_enable) {
+			msk.b.pktdrpsts = 1;
+		}
+		v = DWC_READ_REG32(&dev_if->
+				   out_ep_regs[_ep->num]->doepint) & msk.d32;
+	}
+	return v;
+}
+
+/**
+ * This function returns the Host All Channel Interrupt register
+ */
+static inline uint32_t dwc_otg_read_host_all_channels_intr(dwc_otg_core_if_t *
+							   _core_if)
+{
+	return (DWC_READ_REG32(&_core_if->host_if->host_global_regs->haint));
+}
+
+static inline uint32_t dwc_otg_read_host_channel_intr(dwc_otg_core_if_t *
+						      _core_if, dwc_hc_t * _hc)
+{
+	return (DWC_READ_REG32
+		(&_core_if->host_if->hc_regs[_hc->hc_num]->hcint));
+}
+
+/**
+ * This function returns the mode of the operation, host or device.
+ *
+ * @return 0 - Device Mode, 1 - Host Mode
+ */
+static inline uint32_t dwc_otg_mode(dwc_otg_core_if_t * _core_if)
+{
+	return (DWC_READ_REG32(&_core_if->core_global_regs->gintsts) & 0x1);
+}
+
+/**@}*/
+
+/**
+ * DWC_otg CIL callback structure. This structure allows the HCD and
+ * PCD to register functions used for starting and stopping the PCD
+ * and HCD for role change on for a DRD.
+ */
+typedef struct dwc_otg_cil_callbacks {
+	/** Start function for role change */
+	int (*start) (void *_p);
+	/** Stop Function for role change */
+	int (*stop) (void *_p);
+	/** Disconnect Function for role change */
+	int (*disconnect) (void *_p);
+	/** Resume/Remote wakeup Function */
+	int (*resume_wakeup) (void *_p);
+	/** Suspend function */
+	int (*suspend) (void *_p);
+	/** Session Start (SRP) */
+	int (*session_start) (void *_p);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	/** Sleep (switch to L0 state) */
+	int (*sleep) (void *_p);
+#endif
+	/** Pointer passed to start() and stop() */
+	void *p;
+} dwc_otg_cil_callbacks_t;
+
+extern void dwc_otg_cil_register_pcd_callbacks(dwc_otg_core_if_t * _core_if,
+					       dwc_otg_cil_callbacks_t * _cb,
+					       void *_p);
+extern void dwc_otg_cil_register_hcd_callbacks(dwc_otg_core_if_t * _core_if,
+					       dwc_otg_cil_callbacks_t * _cb,
+					       void *_p);
+
+void dwc_otg_initiate_srp(dwc_otg_core_if_t * core_if);
+
+//////////////////////////////////////////////////////////////////////
+/** Start the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_start(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->hcd_cb && core_if->hcd_cb->start) {
+		core_if->hcd_cb->start(core_if->hcd_cb->p);
+	}
+}
+
+/** Stop the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_stop(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->hcd_cb && core_if->hcd_cb->stop) {
+		core_if->hcd_cb->stop(core_if->hcd_cb->p);
+	}
+}
+
+/** Disconnect the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_disconnect(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->hcd_cb && core_if->hcd_cb->disconnect) {
+		core_if->hcd_cb->disconnect(core_if->hcd_cb->p);
+	}
+}
+
+/** Inform the HCD the a New Session has begun.  Helper function for
+ * using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_session_start(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->hcd_cb && core_if->hcd_cb->session_start) {
+		core_if->hcd_cb->session_start(core_if->hcd_cb->p);
+	}
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/**
+ * Inform the HCD about LPM sleep.
+ * Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_sleep(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->hcd_cb && core_if->hcd_cb->sleep) {
+		core_if->hcd_cb->sleep(core_if->hcd_cb->p);
+	}
+}
+#endif
+
+/** Resume the HCD.  Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_hcd_resume(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->hcd_cb && core_if->hcd_cb->resume_wakeup) {
+		core_if->hcd_cb->resume_wakeup(core_if->hcd_cb->p);
+	}
+}
+
+/** Start the PCD.  Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_pcd_start(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->pcd_cb && core_if->pcd_cb->start) {
+		core_if->pcd_cb->start(core_if->pcd_cb->p);
+	}
+}
+
+/** Stop the PCD.  Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_pcd_stop(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->pcd_cb && core_if->pcd_cb->stop) {
+		core_if->pcd_cb->stop(core_if->pcd_cb->p);
+	}
+}
+
+/** Suspend the PCD.  Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_pcd_suspend(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->pcd_cb && core_if->pcd_cb->suspend) {
+		core_if->pcd_cb->suspend(core_if->pcd_cb->p);
+	}
+}
+
+/** Resume the PCD.  Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void cil_pcd_resume(dwc_otg_core_if_t * core_if)
+{
+	if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+		core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+	}
+}
+
+//////////////////////////////////////////////////////////////////////
+
+#endif
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,1594 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil_intr.c $
+ * $Revision: #32 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * The Core Interface Layer provides basic services for accessing and
+ * managing the DWC_otg hardware. These services are used by both the
+ * Host Controller Driver and the Peripheral Controller Driver.
+ *
+ * This file contains the Common Interrupt handlers.
+ */
+#include "dwc_os.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_pcd.h"
+#include "dwc_otg_hcd.h"
+
+#ifdef DEBUG
+inline const char *op_state_str(dwc_otg_core_if_t * core_if)
+{
+	return (core_if->op_state == A_HOST ? "a_host" :
+		(core_if->op_state == A_SUSPEND ? "a_suspend" :
+		 (core_if->op_state == A_PERIPHERAL ? "a_peripheral" :
+		  (core_if->op_state == B_PERIPHERAL ? "b_peripheral" :
+		   (core_if->op_state == B_HOST ? "b_host" : "unknown")))));
+}
+#endif
+
+/** This function will log a debug message
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_mode_mismatch_intr(dwc_otg_core_if_t * core_if)
+{
+	gintsts_data_t gintsts;
+	DWC_WARN("Mode Mismatch Interrupt: currently in %s mode\n",
+		 dwc_otg_mode(core_if) ? "Host" : "Device");
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.modemismatch = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+	return 1;
+}
+
+/**
+ * This function handles the OTG Interrupts. It reads the OTG
+ * Interrupt Register (GOTGINT) to determine what interrupt has
+ * occurred.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_otg_intr(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	gotgint_data_t gotgint;
+	gotgctl_data_t gotgctl;
+	gintmsk_data_t gintmsk;
+	gpwrdn_data_t gpwrdn;
+
+	gotgint.d32 = DWC_READ_REG32(&global_regs->gotgint);
+	gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
+	DWC_DEBUGPL(DBG_CIL, "++OTG Interrupt gotgint=%0x [%s]\n", gotgint.d32,
+		    op_state_str(core_if));
+
+	if (gotgint.b.sesenddet) {
+		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+			    "Session End Detected++ (%s)\n",
+			    op_state_str(core_if));
+		gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
+
+		if (core_if->op_state == B_HOST) {
+			cil_pcd_start(core_if);
+			core_if->op_state = B_PERIPHERAL;
+		} else {
+			/* If not B_HOST and Device HNP still set. HNP
+			 * Did not succeed!*/
+			if (gotgctl.b.devhnpen) {
+				DWC_DEBUGPL(DBG_ANY, "Session End Detected\n");
+				__DWC_ERROR("Device Not Connected/Responding!\n");
+			}
+
+			/* If Session End Detected the B-Cable has
+			 * been disconnected. */
+			/* Reset PCD and Gadget driver to a
+			 * clean state. */
+			core_if->lx_state = DWC_OTG_L0;
+			DWC_SPINUNLOCK(core_if->lock);
+			cil_pcd_stop(core_if);
+			DWC_SPINLOCK(core_if->lock);
+
+			if (core_if->adp_enable) {
+				if (core_if->power_down == 2) {
+					gpwrdn.d32 = 0;
+					gpwrdn.b.pwrdnswtch = 1;
+					DWC_MODIFY_REG32(&core_if->
+							 core_global_regs->
+							 gpwrdn, gpwrdn.d32, 0);
+				}
+
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pmuintsel = 1;
+				gpwrdn.b.pmuactv = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+
+				dwc_otg_adp_sense_start(core_if);
+			}
+		}
+
+		gotgctl.d32 = 0;
+		gotgctl.b.devhnpen = 1;
+		DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
+	}
+	if (gotgint.b.sesreqsucstschng) {
+		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+			    "Session Reqeust Success Status Change++\n");
+		gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
+		if (gotgctl.b.sesreqscs) {
+
+			if ((core_if->core_params->phy_type ==
+			     DWC_PHY_TYPE_PARAM_FS) && (core_if->core_params->i2c_enable)) {
+				core_if->srp_success = 1;
+			} else {
+				DWC_SPINUNLOCK(core_if->lock);
+				cil_pcd_resume(core_if);
+				DWC_SPINLOCK(core_if->lock);
+				/* Clear Session Request */
+				gotgctl.d32 = 0;
+				gotgctl.b.sesreq = 1;
+				DWC_MODIFY_REG32(&global_regs->gotgctl,
+						 gotgctl.d32, 0);
+			}
+		}
+	}
+	if (gotgint.b.hstnegsucstschng) {
+		/* Print statements during the HNP interrupt handling
+		 * can cause it to fail.*/
+		gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
+		/* WA for 3.00a- HW is not setting cur_mode, even sometimes
+		 * this does not help*/
+		if (core_if->snpsid >= OTG_CORE_REV_3_00a)
+			dwc_udelay(100);
+		if (gotgctl.b.hstnegscs) {
+			if (dwc_otg_is_host_mode(core_if)) {
+				core_if->op_state = B_HOST;
+				/*
+				 * Need to disable SOF interrupt immediately.
+				 * When switching from device to host, the PCD
+				 * interrupt handler won't handle the
+				 * interrupt if host mode is already set. The
+				 * HCD interrupt handler won't get called if
+				 * the HCD state is HALT. This means that the
+				 * interrupt does not get handled and Linux
+				 * complains loudly.
+				 */
+				gintmsk.d32 = 0;
+				gintmsk.b.sofintr = 1;
+				DWC_MODIFY_REG32(&global_regs->gintmsk,
+						 gintmsk.d32, 0);
+				/* Call callback function with spin lock released */
+				DWC_SPINUNLOCK(core_if->lock);
+				cil_pcd_stop(core_if);
+				/*
+				 * Initialize the Core for Host mode.
+				 */
+				cil_hcd_start(core_if);
+				DWC_SPINLOCK(core_if->lock);
+				core_if->op_state = B_HOST;
+			}
+		} else {
+			gotgctl.d32 = 0;
+			gotgctl.b.hnpreq = 1;
+			gotgctl.b.devhnpen = 1;
+			DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
+			DWC_DEBUGPL(DBG_ANY, "HNP Failed\n");
+			__DWC_ERROR("Device Not Connected/Responding\n");
+		}
+	}
+	if (gotgint.b.hstnegdet) {
+		/* The disconnect interrupt is set at the same time as
+		 * Host Negotiation Detected.  During the mode
+		 * switch all interrupts are cleared so the disconnect
+		 * interrupt handler will not get executed.
+		 */
+		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+			    "Host Negotiation Detected++ (%s)\n",
+			    (dwc_otg_is_host_mode(core_if) ? "Host" :
+			     "Device"));
+		if (dwc_otg_is_device_mode(core_if)) {
+			DWC_DEBUGPL(DBG_ANY, "a_suspend->a_peripheral (%d)\n",
+				    core_if->op_state);
+			DWC_SPINUNLOCK(core_if->lock);
+			cil_hcd_disconnect(core_if);
+			cil_pcd_start(core_if);
+			DWC_SPINLOCK(core_if->lock);
+			core_if->op_state = A_PERIPHERAL;
+		} else {
+			/*
+			 * Need to disable SOF interrupt immediately. When
+			 * switching from device to host, the PCD interrupt
+			 * handler won't handle the interrupt if host mode is
+			 * already set. The HCD interrupt handler won't get
+			 * called if the HCD state is HALT. This means that
+			 * the interrupt does not get handled and Linux
+			 * complains loudly.
+			 */
+			gintmsk.d32 = 0;
+			gintmsk.b.sofintr = 1;
+			DWC_MODIFY_REG32(&global_regs->gintmsk, gintmsk.d32, 0);
+			DWC_SPINUNLOCK(core_if->lock);
+			cil_pcd_stop(core_if);
+			cil_hcd_start(core_if);
+			DWC_SPINLOCK(core_if->lock);
+			core_if->op_state = A_HOST;
+		}
+	}
+	if (gotgint.b.adevtoutchng) {
+		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+			    "A-Device Timeout Change++\n");
+	}
+	if (gotgint.b.debdone) {
+		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " "Debounce Done++\n");
+	}
+
+	/* Clear GOTGINT */
+	DWC_WRITE_REG32(&core_if->core_global_regs->gotgint, gotgint.d32);
+
+	return 1;
+}
+
+void w_conn_id_status_change(void *p)
+{
+	dwc_otg_core_if_t *core_if = p;
+	uint32_t count = 0;
+	gotgctl_data_t gotgctl = {.d32 = 0 };
+
+	gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+	DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32);
+	DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts);
+
+	/* B-Device connector (Device Mode) */
+	if (gotgctl.b.conidsts) {
+		/* Wait for switch to device mode. */
+		while (!dwc_otg_is_device_mode(core_if)) {
+			DWC_PRINTF("Waiting for Peripheral Mode, Mode=%s\n",
+				   (dwc_otg_is_host_mode(core_if) ? "Host" :
+				    "Peripheral"));
+			dwc_mdelay(100);
+			if (++count > 10000)
+				break;
+		}
+		DWC_ASSERT(++count < 10000,
+			   "Connection id status change timed out");
+		core_if->op_state = B_PERIPHERAL;
+		dwc_otg_core_init(core_if);
+		dwc_otg_enable_global_interrupts(core_if);
+		cil_pcd_start(core_if);
+	} else {
+		/* A-Device connector (Host Mode) */
+		while (!dwc_otg_is_host_mode(core_if)) {
+			DWC_PRINTF("Waiting for Host Mode, Mode=%s\n",
+				   (dwc_otg_is_host_mode(core_if) ? "Host" :
+				    "Peripheral"));
+			dwc_mdelay(100);
+			if (++count > 10000)
+				break;
+		}
+		DWC_ASSERT(++count < 10000,
+			   "Connection id status change timed out");
+		core_if->op_state = A_HOST;
+		/*
+		 * Initialize the Core for Host mode.
+		 */
+		dwc_otg_core_init(core_if);
+		dwc_otg_enable_global_interrupts(core_if);
+		cil_hcd_start(core_if);
+	}
+}
+
+/**
+ * This function handles the Connector ID Status Change Interrupt.  It
+ * reads the OTG Interrupt Register (GOTCTL) to determine whether this
+ * is a Device to Host Mode transition or a Host Mode to Device
+ * Transition.
+ *
+ * This only occurs when the cable is connected/removed from the PHY
+ * connector.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t * core_if)
+{
+
+	/*
+	 * Need to disable SOF interrupt immediately. If switching from device
+	 * to host, the PCD interrupt handler won't handle the interrupt if
+	 * host mode is already set. The HCD interrupt handler won't get
+	 * called if the HCD state is HALT. This means that the interrupt does
+	 * not get handled and Linux complains loudly.
+	 */
+	gintmsk_data_t gintmsk = {.d32 = 0 };
+	gintsts_data_t gintsts = {.d32 = 0 };
+
+	gintmsk.b.sofintr = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
+
+	DWC_DEBUGPL(DBG_CIL,
+		    " ++Connector ID Status Change Interrupt++  (%s)\n",
+		    (dwc_otg_is_host_mode(core_if) ? "Host" : "Device"));
+
+	DWC_SPINUNLOCK(core_if->lock);
+
+	/*
+	 * Need to schedule a work, as there are possible DELAY function calls
+	 * Release lock before scheduling workq as it holds spinlock during scheduling
+	 */
+
+	DWC_WORKQ_SCHEDULE(core_if->wq_otg, w_conn_id_status_change,
+			   core_if, "connection id status change");
+	DWC_SPINLOCK(core_if->lock);
+
+	/* Set flag and clear interrupt */
+	gintsts.b.conidstschng = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * This interrupt indicates that a device is initiating the Session
+ * Request Protocol to request the host to turn on bus power so a new
+ * session can begin. The handler responds by turning on bus power. If
+ * the DWC_otg controller is in low power mode, the handler brings the
+ * controller out of low power mode before turning on bus power.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t * core_if)
+{
+	gintsts_data_t gintsts;
+
+#ifndef DWC_HOST_ONLY
+	DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n");
+
+	if (dwc_otg_is_device_mode(core_if)) {
+		DWC_PRINTF("SRP: Device mode\n");
+	} else {
+		hprt0_data_t hprt0;
+		DWC_PRINTF("SRP: Host mode\n");
+
+		/* Turn on the port power bit. */
+		hprt0.d32 = dwc_otg_read_hprt0(core_if);
+		hprt0.b.prtpwr = 1;
+		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+		/* Start the Connection timer. So a message can be displayed
+		 * if connect does not occur within 10 seconds. */
+		cil_hcd_session_start(core_if);
+	}
+#endif
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.sessreqintr = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+	return 1;
+}
+
+void w_wakeup_detected(void *p)
+{
+	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) p;
+	/*
+	 * Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms
+	 * so that OPT tests pass with all PHYs).
+	 */
+	hprt0_data_t hprt0 = {.d32 = 0 };
+#if 0
+	pcgcctl_data_t pcgcctl = {.d32 = 0 };
+	/* Restart the Phy Clock */
+	pcgcctl.b.stoppclk = 1;
+	DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+	dwc_udelay(10);
+#endif //0
+	hprt0.d32 = dwc_otg_read_hprt0(core_if);
+	DWC_DEBUGPL(DBG_ANY, "Resume: HPRT0=%0x\n", hprt0.d32);
+//      dwc_mdelay(70);
+	hprt0.b.prtres = 0;	/* Resume */
+	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+	DWC_DEBUGPL(DBG_ANY, "Clear Resume: HPRT0=%0x\n",
+		    DWC_READ_REG32(core_if->host_if->hprt0));
+
+	cil_hcd_resume(core_if);
+
+	/** Change to L0 state*/
+	core_if->lx_state = DWC_OTG_L0;
+}
+
+/**
+ * This interrupt indicates that the DWC_otg controller has detected a
+ * resume or remote wakeup sequence. If the DWC_otg controller is in
+ * low power mode, the handler must brings the controller out of low
+ * power mode. The controller automatically begins resume
+ * signaling. The handler schedules a time to stop resume signaling.
+ */
+int32_t dwc_otg_handle_wakeup_detected_intr(dwc_otg_core_if_t * core_if)
+{
+	gintsts_data_t gintsts;
+
+	DWC_DEBUGPL(DBG_ANY,
+		    "++Resume and Remote Wakeup Detected Interrupt++\n");
+
+	DWC_PRINTF("%s lxstate = %d\n", __func__, core_if->lx_state);
+
+	if (dwc_otg_is_device_mode(core_if)) {
+		dctl_data_t dctl = {.d32 = 0 };
+		DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n",
+			    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->
+					   dsts));
+		if (core_if->lx_state == DWC_OTG_L2) {
+#ifdef PARTIAL_POWER_DOWN
+			if (core_if->hwcfg4.b.power_optimiz) {
+				pcgcctl_data_t power = {.d32 = 0 };
+
+				power.d32 = DWC_READ_REG32(core_if->pcgcctl);
+				DWC_DEBUGPL(DBG_CIL, "PCGCCTL=%0x\n",
+					    power.d32);
+
+				power.b.stoppclk = 0;
+				DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
+
+				power.b.pwrclmp = 0;
+				DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
+
+				power.b.rstpdwnmodule = 0;
+				DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
+			}
+#endif
+			/* Clear the Remote Wakeup Signaling */
+			dctl.b.rmtwkupsig = 1;
+			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+					 dctl, dctl.d32, 0);
+
+			DWC_SPINUNLOCK(core_if->lock);
+			if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+				core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+			}
+			DWC_SPINLOCK(core_if->lock);
+		} else {
+			glpmcfg_data_t lpmcfg;
+			lpmcfg.d32 =
+			    DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+			lpmcfg.b.hird_thres &= (~(1 << 4));
+			DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg,
+					lpmcfg.d32);
+		}
+		/** Change to L0 state*/
+		core_if->lx_state = DWC_OTG_L0;
+	} else {
+		if (core_if->lx_state != DWC_OTG_L1) {
+			pcgcctl_data_t pcgcctl = {.d32 = 0 };
+
+			/* Restart the Phy Clock */
+			pcgcctl.b.stoppclk = 1;
+			DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+			DWC_TIMER_SCHEDULE(core_if->wkp_timer, 71);
+		} else {
+			/** Change to L0 state*/
+			core_if->lx_state = DWC_OTG_L0;
+		}
+	}
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.wkupintr = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * This interrupt indicates that the Wakeup Logic has detected a
+ * Device disconnect.
+ */
+static int32_t dwc_otg_handle_pwrdn_disconnect_intr(dwc_otg_core_if_t *core_if)
+{
+	gpwrdn_data_t gpwrdn = { .d32 = 0 };
+	gpwrdn_data_t gpwrdn_temp = { .d32 = 0 };
+	gpwrdn_temp.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+
+	DWC_PRINTF("%s called\n", __FUNCTION__);
+
+	if (!core_if->hibernation_suspend) {
+		DWC_PRINTF("Already exited from Hibernation\n");
+		return 1;
+	}
+
+	/* Switch on the voltage to the core */
+	gpwrdn.b.pwrdnswtch = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Reset the core */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Disable power clamps*/
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnclmp = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	/* Remove reset the core signal */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+	dwc_udelay(10);
+
+	/* Disable PMU interrupt */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuintsel = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	core_if->hibernation_suspend = 0;
+
+	/* Disable PMU */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuactv = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	if (gpwrdn_temp.b.idsts) {
+		core_if->op_state = B_PERIPHERAL;
+		dwc_otg_core_init(core_if);
+		dwc_otg_enable_global_interrupts(core_if);
+		cil_pcd_start(core_if);
+	} else {
+		core_if->op_state = A_HOST;
+		dwc_otg_core_init(core_if);
+		dwc_otg_enable_global_interrupts(core_if);
+		cil_hcd_start(core_if);
+	}
+
+	return 1;
+}
+
+/**
+ * This interrupt indicates that the Wakeup Logic has detected a
+ * remote wakeup sequence.
+ */
+static int32_t dwc_otg_handle_pwrdn_wakeup_detected_intr(dwc_otg_core_if_t * core_if)
+{
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+	DWC_DEBUGPL(DBG_ANY,
+		    "++Powerdown Remote Wakeup Detected Interrupt++\n");
+
+	if (!core_if->hibernation_suspend) {
+		DWC_PRINTF("Already exited from Hibernation\n");
+		return 1;
+	}
+
+	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+	if (gpwrdn.b.idsts) {	// Device Mode
+		if ((core_if->power_down == 2)
+		    && (core_if->hibernation_suspend == 1)) {
+			dwc_otg_device_hibernation_restore(core_if, 0, 0);
+		}
+	} else {
+		if ((core_if->power_down == 2)
+		    && (core_if->hibernation_suspend == 1)) {
+			dwc_otg_host_hibernation_restore(core_if, 1, 0);
+		}
+	}
+	return 1;
+}
+
+static int32_t dwc_otg_handle_pwrdn_idsts_change(dwc_otg_device_t *otg_dev)
+{
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+	gpwrdn_data_t gpwrdn_temp = {.d32 = 0 };
+	dwc_otg_core_if_t *core_if = otg_dev->core_if;
+
+	DWC_DEBUGPL(DBG_ANY, "%s called\n", __FUNCTION__);
+	gpwrdn_temp.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+	if (core_if->power_down == 2) {
+		if (!core_if->hibernation_suspend) {
+			DWC_PRINTF("Already exited from Hibernation\n");
+			return 1;
+		}
+		DWC_DEBUGPL(DBG_ANY, "Exit from hibernation on ID sts change\n");
+		/* Switch on the voltage to the core */
+		gpwrdn.b.pwrdnswtch = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		dwc_udelay(10);
+
+		/* Reset the core */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pwrdnrstn = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		dwc_udelay(10);
+
+		/* Disable power clamps */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pwrdnclmp = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+		/* Remove reset the core signal */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pwrdnrstn = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+		dwc_udelay(10);
+
+		/* Disable PMU interrupt */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pmuintsel = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+		/*Indicates that we are exiting from hibernation */
+		core_if->hibernation_suspend = 0;
+
+		/* Disable PMU */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pmuactv = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		dwc_udelay(10);
+
+		gpwrdn.d32 = core_if->gr_backup->gpwrdn_local;
+		if (gpwrdn.b.dis_vbus == 1) {
+			gpwrdn.d32 = 0;
+			gpwrdn.b.dis_vbus = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		}
+
+		if (gpwrdn_temp.b.idsts) {
+			core_if->op_state = B_PERIPHERAL;
+			dwc_otg_core_init(core_if);
+			dwc_otg_enable_global_interrupts(core_if);
+			cil_pcd_start(core_if);
+		} else {
+			core_if->op_state = A_HOST;
+			dwc_otg_core_init(core_if);
+			dwc_otg_enable_global_interrupts(core_if);
+			cil_hcd_start(core_if);
+		}
+	}
+
+	if (core_if->adp_enable) {
+		uint8_t is_host = 0;
+		DWC_SPINUNLOCK(core_if->lock);
+		/* Change the core_if's lock to hcd/pcd lock depend on mode? */
+#ifndef DWC_HOST_ONLY
+		if (gpwrdn_temp.b.idsts)
+			core_if->lock = otg_dev->pcd->lock;
+#endif
+#ifndef DWC_DEVICE_ONLY
+		if (!gpwrdn_temp.b.idsts) {
+				core_if->lock = otg_dev->hcd->lock;
+				is_host = 1;
+		}
+#endif
+		DWC_PRINTF("RESTART ADP\n");
+		if (core_if->adp.probe_enabled)
+			dwc_otg_adp_probe_stop(core_if);
+		if (core_if->adp.sense_enabled)
+			dwc_otg_adp_sense_stop(core_if);
+		if (core_if->adp.sense_timer_started)
+			DWC_TIMER_CANCEL(core_if->adp.sense_timer);
+		if (core_if->adp.vbuson_timer_started)
+			DWC_TIMER_CANCEL(core_if->adp.vbuson_timer);
+		core_if->adp.probe_timer_values[0] = -1;
+		core_if->adp.probe_timer_values[1] = -1;
+		core_if->adp.sense_timer_started = 0;
+		core_if->adp.vbuson_timer_started = 0;
+		core_if->adp.probe_counter = 0;
+		core_if->adp.gpwrdn = 0;
+
+		/* Disable PMU and restart ADP */
+		gpwrdn_temp.d32 = 0;
+		gpwrdn_temp.b.pmuactv = 1;
+		gpwrdn_temp.b.pmuintsel = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		DWC_PRINTF("Check point 1\n");
+		dwc_mdelay(110);
+		dwc_otg_adp_start(core_if, is_host);
+		DWC_SPINLOCK(core_if->lock);
+	}
+
+
+	return 1;
+}
+
+static int32_t dwc_otg_handle_pwrdn_session_change(dwc_otg_core_if_t * core_if)
+{
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+	int32_t otg_cap_param = core_if->core_params->otg_cap;
+	DWC_DEBUGPL(DBG_ANY, "%s called\n", __FUNCTION__);
+
+	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+	if (core_if->power_down == 2) {
+		if (!core_if->hibernation_suspend) {
+			DWC_PRINTF("Already exited from Hibernation\n");
+			return 1;
+		}
+
+		if ((otg_cap_param != DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE ||
+			 otg_cap_param != DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE) &&
+			gpwrdn.b.bsessvld == 0) {
+			/* Save gpwrdn register for further usage if stschng interrupt */
+			core_if->gr_backup->gpwrdn_local =
+				DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+			/*Exit from ISR and wait for stschng interrupt with bsessvld = 1 */
+			return 1;
+		}
+
+		/* Switch on the voltage to the core */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pwrdnswtch = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		dwc_udelay(10);
+
+		/* Reset the core */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pwrdnrstn = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		dwc_udelay(10);
+
+		/* Disable power clamps */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pwrdnclmp = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+		/* Remove reset the core signal */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pwrdnrstn = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+		dwc_udelay(10);
+
+		/* Disable PMU interrupt */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pmuintsel = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		dwc_udelay(10);
+
+		/*Indicates that we are exiting from hibernation */
+		core_if->hibernation_suspend = 0;
+
+		/* Disable PMU */
+		gpwrdn.d32 = 0;
+		gpwrdn.b.pmuactv = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+		dwc_udelay(10);
+
+		core_if->op_state = B_PERIPHERAL;
+		dwc_otg_core_init(core_if);
+		dwc_otg_enable_global_interrupts(core_if);
+		cil_pcd_start(core_if);
+
+		if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE ||
+			otg_cap_param == DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE) {
+			/*
+			 * Initiate SRP after initial ADP probe.
+			 */
+			dwc_otg_initiate_srp(core_if);
+		}
+	}
+
+	return 1;
+}
+/**
+ * This interrupt indicates that the Wakeup Logic has detected a
+ * status change either on IDDIG or BSessVld.
+ */
+static uint32_t dwc_otg_handle_pwrdn_stschng_intr(dwc_otg_device_t *otg_dev)
+{
+	int retval;
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+	gpwrdn_data_t gpwrdn_temp = {.d32 = 0 };
+	dwc_otg_core_if_t *core_if = otg_dev->core_if;
+
+	DWC_PRINTF("%s called\n", __FUNCTION__);
+
+	if (core_if->power_down == 2) {
+		if (core_if->hibernation_suspend <= 0) {
+			DWC_PRINTF("Already exited from Hibernation\n");
+			return 1;
+		} else
+			gpwrdn_temp.d32 = core_if->gr_backup->gpwrdn_local;
+
+	} else {
+		gpwrdn_temp.d32 = core_if->adp.gpwrdn;
+	}
+
+	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+
+	if (gpwrdn.b.idsts ^ gpwrdn_temp.b.idsts) {
+		retval = dwc_otg_handle_pwrdn_idsts_change(otg_dev);
+	} else if (gpwrdn.b.bsessvld ^ gpwrdn_temp.b.bsessvld) {
+		retval = dwc_otg_handle_pwrdn_session_change(core_if);
+	}
+
+	return retval;
+}
+
+/**
+ * This interrupt indicates that the Wakeup Logic has detected a
+ * SRP.
+ */
+static int32_t dwc_otg_handle_pwrdn_srp_intr(dwc_otg_core_if_t * core_if)
+{
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+
+	DWC_PRINTF("%s called\n", __FUNCTION__);
+
+	if (!core_if->hibernation_suspend) {
+		DWC_PRINTF("Already exited from Hibernation\n");
+		return 1;
+	}
+#ifdef DWC_DEV_SRPCAP
+	if (core_if->pwron_timer_started) {
+		core_if->pwron_timer_started = 0;
+		DWC_TIMER_CANCEL(core_if->pwron_timer);
+	}
+#endif
+
+	/* Switch on the voltage to the core */
+	gpwrdn.b.pwrdnswtch = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Reset the core */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Disable power clamps */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnclmp = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	/* Remove reset the core signal */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+	dwc_udelay(10);
+
+	/* Disable PMU interrupt */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuintsel = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	/* Indicates that we are exiting from hibernation */
+	core_if->hibernation_suspend = 0;
+
+	/* Disable PMU */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuactv = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Programm Disable VBUS to 0 */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.dis_vbus = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	/*Initialize the core as Host */
+	core_if->op_state = A_HOST;
+	dwc_otg_core_init(core_if);
+	dwc_otg_enable_global_interrupts(core_if);
+	cil_hcd_start(core_if);
+
+	return 1;
+}
+
+/** This interrupt indicates that restore command after Hibernation
+ * was completed by the core. */
+int32_t dwc_otg_handle_restore_done_intr(dwc_otg_core_if_t * core_if)
+{
+	pcgcctl_data_t pcgcctl;
+	DWC_DEBUGPL(DBG_ANY, "++Restore Done Interrupt++\n");
+
+	//TODO De-assert restore signal. 8.a
+	pcgcctl.d32 = DWC_READ_REG32(core_if->pcgcctl);
+	if (pcgcctl.b.restoremode == 1) {
+		gintmsk_data_t gintmsk = {.d32 = 0 };
+		/*
+		 * If restore mode is Remote Wakeup,
+		 * unmask Remote Wakeup interrupt.
+		 */
+		gintmsk.b.wkupintr = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
+				 0, gintmsk.d32);
+	}
+
+	return 1;
+}
+
+/**
+ * This interrupt indicates that a device has been disconnected from
+ * the root port.
+ */
+int32_t dwc_otg_handle_disconnect_intr(dwc_otg_core_if_t * core_if)
+{
+	gintsts_data_t gintsts;
+
+	DWC_DEBUGPL(DBG_ANY, "++Disconnect Detected Interrupt++ (%s) %s\n",
+		    (dwc_otg_is_host_mode(core_if) ? "Host" : "Device"),
+		    op_state_str(core_if));
+
+/** @todo Consolidate this if statement. */
+#ifndef DWC_HOST_ONLY
+	if (core_if->op_state == B_HOST) {
+		/* If in device mode Disconnect and stop the HCD, then
+		 * start the PCD. */
+		DWC_SPINUNLOCK(core_if->lock);
+		cil_hcd_disconnect(core_if);
+		cil_pcd_start(core_if);
+		DWC_SPINLOCK(core_if->lock);
+		core_if->op_state = B_PERIPHERAL;
+	} else if (dwc_otg_is_device_mode(core_if)) {
+		gotgctl_data_t gotgctl = {.d32 = 0 };
+		gotgctl.d32 =
+		    DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
+		if (gotgctl.b.hstsethnpen == 1) {
+			/* Do nothing, if HNP in process the OTG
+			 * interrupt "Host Negotiation Detected"
+			 * interrupt will do the mode switch.
+			 */
+		} else if (gotgctl.b.devhnpen == 0) {
+			/* If in device mode Disconnect and stop the HCD, then
+			 * start the PCD. */
+			DWC_SPINUNLOCK(core_if->lock);
+			cil_hcd_disconnect(core_if);
+			cil_pcd_start(core_if);
+			DWC_SPINLOCK(core_if->lock);
+			core_if->op_state = B_PERIPHERAL;
+		} else {
+			DWC_DEBUGPL(DBG_ANY, "!a_peripheral && !devhnpen\n");
+		}
+	} else {
+		if (core_if->op_state == A_HOST) {
+			/* A-Cable still connected but device disconnected. */
+			cil_hcd_disconnect(core_if);
+			if (core_if->adp_enable) {
+				gpwrdn_data_t gpwrdn = { .d32 = 0 };
+				cil_hcd_stop(core_if);
+				/* Enable Power Down Logic */
+				gpwrdn.b.pmuintsel = 1;
+				gpwrdn.b.pmuactv = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+				dwc_otg_adp_probe_start(core_if);
+
+				/* Power off the core */
+				if (core_if->power_down == 2) {
+					gpwrdn.d32 = 0;
+					gpwrdn.b.pwrdnswtch = 1;
+					DWC_MODIFY_REG32
+					    (&core_if->core_global_regs->gpwrdn,
+					     gpwrdn.d32, 0);
+				}
+			}
+		}
+	}
+#endif
+	/* Change to L3(OFF) state */
+	core_if->lx_state = DWC_OTG_L3;
+
+	gintsts.d32 = 0;
+	gintsts.b.disconnect = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+	return 1;
+}
+
+/**
+ * This interrupt indicates that SUSPEND state has been detected on
+ * the USB.
+ *
+ * For HNP the USB Suspend interrupt signals the change from
+ * "a_peripheral" to "a_host".
+ *
+ * When power management is enabled the core will be put in low power
+ * mode.
+ */
+int32_t dwc_otg_handle_usb_suspend_intr(dwc_otg_core_if_t * core_if)
+{
+	dsts_data_t dsts;
+	gintsts_data_t gintsts;
+	dcfg_data_t dcfg;
+
+	DWC_DEBUGPL(DBG_ANY, "USB SUSPEND\n");
+
+	if (dwc_otg_is_device_mode(core_if)) {
+		/* Check the Device status register to determine if the Suspend
+		 * state is active. */
+		dsts.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+		DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", dsts.d32);
+		DWC_DEBUGPL(DBG_PCD, "DSTS.Suspend Status=%d "
+			    "HWCFG4.power Optimize=%d\n",
+			    dsts.b.suspsts, core_if->hwcfg4.b.power_optimiz);
+
+#ifdef PARTIAL_POWER_DOWN
+/** @todo Add a module parameter for power management. */
+
+		if (dsts.b.suspsts && core_if->hwcfg4.b.power_optimiz) {
+			pcgcctl_data_t power = {.d32 = 0 };
+			DWC_DEBUGPL(DBG_CIL, "suspend\n");
+
+			power.b.pwrclmp = 1;
+			DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
+
+			power.b.rstpdwnmodule = 1;
+			DWC_MODIFY_REG32(core_if->pcgcctl, 0, power.d32);
+
+			power.b.stoppclk = 1;
+			DWC_MODIFY_REG32(core_if->pcgcctl, 0, power.d32);
+
+		} else {
+			DWC_DEBUGPL(DBG_ANY, "disconnect?\n");
+		}
+#endif
+		/* PCD callback for suspend. Release the lock inside of callback function */
+		cil_pcd_suspend(core_if);
+		if (core_if->power_down == 2)
+		{
+			dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+			DWC_DEBUGPL(DBG_ANY,"lx_state = %08x\n",core_if->lx_state);
+			DWC_DEBUGPL(DBG_ANY," device address = %08d\n",dcfg.b.devaddr);
+
+			if (core_if->lx_state != DWC_OTG_L3 && dcfg.b.devaddr) {
+				pcgcctl_data_t pcgcctl = {.d32 = 0 };
+				gpwrdn_data_t gpwrdn = {.d32 = 0 };
+				gusbcfg_data_t gusbcfg = {.d32 = 0 };
+
+				/* Change to L2(suspend) state */
+				core_if->lx_state = DWC_OTG_L2;
+
+				/* Clear interrupt in gintsts */
+				gintsts.d32 = 0;
+				gintsts.b.usbsuspend = 1;
+				DWC_WRITE_REG32(&core_if->core_global_regs->
+						gintsts, gintsts.d32);
+				DWC_PRINTF("Start of hibernation completed\n");
+				dwc_otg_save_global_regs(core_if);
+				dwc_otg_save_dev_regs(core_if);
+
+				gusbcfg.d32 =
+				    DWC_READ_REG32(&core_if->core_global_regs->
+						   gusbcfg);
+				if (gusbcfg.b.ulpi_utmi_sel == 1) {
+					/* ULPI interface */
+					/* Suspend the Phy Clock */
+					pcgcctl.d32 = 0;
+					pcgcctl.b.stoppclk = 1;
+					DWC_MODIFY_REG32(core_if->pcgcctl, 0,
+							 pcgcctl.d32);
+					dwc_udelay(10);
+					gpwrdn.b.pmuactv = 1;
+					DWC_MODIFY_REG32(&core_if->
+							 core_global_regs->
+							 gpwrdn, 0, gpwrdn.d32);
+				} else {
+					/* UTMI+ Interface */
+					gpwrdn.b.pmuactv = 1;
+					DWC_MODIFY_REG32(&core_if->
+							 core_global_regs->
+							 gpwrdn, 0, gpwrdn.d32);
+					dwc_udelay(10);
+					pcgcctl.b.stoppclk = 1;
+					DWC_MODIFY_REG32(core_if->pcgcctl, 0,
+							 pcgcctl.d32);
+					dwc_udelay(10);
+				}
+
+				/* Set flag to indicate that we are in hibernation */
+				core_if->hibernation_suspend = 1;
+				/* Enable interrupts from wake up logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pmuintsel = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+				dwc_udelay(10);
+
+				/* Unmask device mode interrupts in GPWRDN */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.rst_det_msk = 1;
+				gpwrdn.b.lnstchng_msk = 1;
+				gpwrdn.b.sts_chngint_msk = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+				dwc_udelay(10);
+
+				/* Enable Power Down Clamp */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pwrdnclmp = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+				dwc_udelay(10);
+
+				/* Switch off VDD */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pwrdnswtch = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+
+				/* Save gpwrdn register for further usage if stschng interrupt */
+				core_if->gr_backup->gpwrdn_local =
+							DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+				DWC_PRINTF("Hibernation completed\n");
+
+				return 1;
+			}
+		} else if (core_if->power_down == 3) {
+			pcgcctl_data_t pcgcctl = {.d32 = 0 };
+			dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
+			DWC_DEBUGPL(DBG_ANY, "lx_state = %08x\n",core_if->lx_state);
+			DWC_DEBUGPL(DBG_ANY, " device address = %08d\n",dcfg.b.devaddr);
+
+			if (core_if->lx_state != DWC_OTG_L3 && dcfg.b.devaddr) {
+				DWC_DEBUGPL(DBG_ANY, "Start entering to extended hibernation\n");
+				core_if->xhib = 1;
+
+				/* Clear interrupt in gintsts */
+				gintsts.d32 = 0;
+				gintsts.b.usbsuspend = 1;
+				DWC_WRITE_REG32(&core_if->core_global_regs->
+					gintsts, gintsts.d32);
+
+				dwc_otg_save_global_regs(core_if);
+				dwc_otg_save_dev_regs(core_if);
+
+				/* Wait for 10 PHY clocks */
+				dwc_udelay(10);
+
+				/* Program GPIO register while entering to xHib */
+				DWC_WRITE_REG32(&core_if->core_global_regs->ggpio, 0x1);
+
+				pcgcctl.b.enbl_extnd_hiber = 1;
+				DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+				DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+
+				pcgcctl.d32 = 0;
+				pcgcctl.b.extnd_hiber_pwrclmp = 1;
+				DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+
+				pcgcctl.d32 = 0;
+				pcgcctl.b.extnd_hiber_switch = 1;
+				core_if->gr_backup->xhib_gpwrdn = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+				core_if->gr_backup->xhib_pcgcctl = DWC_READ_REG32(core_if->pcgcctl) | pcgcctl.d32;
+				DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+
+				DWC_DEBUGPL(DBG_ANY, "Finished entering to extended hibernation\n");
+
+				return 1;
+			}
+		}
+	} else {
+		if (core_if->op_state == A_PERIPHERAL) {
+			DWC_DEBUGPL(DBG_ANY, "a_peripheral->a_host\n");
+			/* Clear the a_peripheral flag, back to a_host. */
+			DWC_SPINUNLOCK(core_if->lock);
+			cil_pcd_stop(core_if);
+			cil_hcd_start(core_if);
+			DWC_SPINLOCK(core_if->lock);
+			core_if->op_state = A_HOST;
+		}
+	}
+
+	/* Change to L2(suspend) state */
+	core_if->lx_state = DWC_OTG_L2;
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.usbsuspend = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+	return 1;
+}
+
+static int32_t dwc_otg_handle_xhib_exit_intr(dwc_otg_core_if_t * core_if)
+{
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+	pcgcctl_data_t pcgcctl = {.d32 = 0 };
+	gahbcfg_data_t gahbcfg = {.d32 = 0 };
+
+	dwc_udelay(10);
+
+	/* Program GPIO register while entering to xHib */
+	DWC_WRITE_REG32(&core_if->core_global_regs->ggpio, 0x0);
+
+	pcgcctl.d32 = core_if->gr_backup->xhib_pcgcctl;
+	pcgcctl.b.extnd_hiber_pwrclmp = 0;
+	DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+	dwc_udelay(10);
+
+	gpwrdn.d32 = core_if->gr_backup->xhib_gpwrdn;
+	gpwrdn.b.restore = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32);
+	dwc_udelay(10);
+
+	restore_lpm_i2c_regs(core_if);
+
+	pcgcctl.d32 = core_if->gr_backup->pcgcctl_local & (0x3FFFF << 14);
+	pcgcctl.b.max_xcvrselect = 1;
+	pcgcctl.b.ess_reg_restored = 0;
+	pcgcctl.b.extnd_hiber_switch = 0;
+	pcgcctl.b.extnd_hiber_pwrclmp = 0;
+	pcgcctl.b.enbl_extnd_hiber = 1;
+	DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+
+	gahbcfg.d32 = core_if->gr_backup->gahbcfg_local;
+	gahbcfg.b.glblintrmsk = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg, gahbcfg.d32);
+
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, 0x1 << 16);
+
+	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg,
+			core_if->gr_backup->gusbcfg_local);
+	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg,
+			core_if->dr_backup->dcfg);
+
+	pcgcctl.d32 = 0;
+	pcgcctl.d32 = core_if->gr_backup->pcgcctl_local & (0x3FFFF << 14);
+	pcgcctl.b.max_xcvrselect = 1;
+	pcgcctl.d32 |= 0x608;
+	DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+	dwc_udelay(10);
+
+	pcgcctl.d32 = 0;
+	pcgcctl.d32 = core_if->gr_backup->pcgcctl_local & (0x3FFFF << 14);
+	pcgcctl.b.max_xcvrselect = 1;
+	pcgcctl.b.ess_reg_restored = 1;
+	pcgcctl.b.enbl_extnd_hiber = 1;
+	pcgcctl.b.rstpdwnmodule = 1;
+	pcgcctl.b.restoremode = 1;
+	DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
+
+	DWC_DEBUGPL(DBG_ANY, "%s called\n", __FUNCTION__);
+
+	return 1;
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/**
+ * This function hadles LPM transaction received interrupt.
+ */
+static int32_t dwc_otg_handle_lpm_intr(dwc_otg_core_if_t * core_if)
+{
+	glpmcfg_data_t lpmcfg;
+	gintsts_data_t gintsts;
+
+	if (!core_if->core_params->lpm_enable) {
+		DWC_PRINTF("Unexpected LPM interrupt\n");
+	}
+
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	DWC_PRINTF("LPM config register = 0x%08x\n", lpmcfg.d32);
+
+	if (dwc_otg_is_host_mode(core_if)) {
+		cil_hcd_sleep(core_if);
+	} else {
+		lpmcfg.b.hird_thres |= (1 << 4);
+		DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg,
+				lpmcfg.d32);
+	}
+
+	/* Examine prt_sleep_sts after TL1TokenTetry period max (10 us) */
+	dwc_udelay(10);
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	if (lpmcfg.b.prt_sleep_sts) {
+		/* Save the current state */
+		core_if->lx_state = DWC_OTG_L1;
+	}
+
+	/* Clear interrupt  */
+	gintsts.d32 = 0;
+	gintsts.b.lpmtranrcvd = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+	return 1;
+}
+#endif /* CONFIG_USB_DWC_OTG_LPM */
+
+/**
+ * This function returns the Core Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_common_intr(dwc_otg_core_if_t * core_if, gintmsk_data_t *reenable_gintmsk, dwc_otg_hcd_t *hcd)
+{
+	gahbcfg_data_t gahbcfg = {.d32 = 0 };
+	gintsts_data_t gintsts;
+	gintmsk_data_t gintmsk;
+	gintmsk_data_t gintmsk_common = {.d32 = 0 };
+	gintmsk_common.b.wkupintr = 1;
+	gintmsk_common.b.sessreqintr = 1;
+	gintmsk_common.b.conidstschng = 1;
+	gintmsk_common.b.otgintr = 1;
+	gintmsk_common.b.modemismatch = 1;
+	gintmsk_common.b.disconnect = 1;
+	gintmsk_common.b.usbsuspend = 1;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	gintmsk_common.b.lpmtranrcvd = 1;
+#endif
+	gintmsk_common.b.restoredone = 1;
+	if(dwc_otg_is_device_mode(core_if))
+	{
+		/** @todo: The port interrupt occurs while in device
+		 * mode. Added code to CIL to clear the interrupt for now!
+		 */
+		gintmsk_common.b.portintr = 1;
+	}
+	gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+	gintmsk.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+	if(fiq_enable) {
+		local_fiq_disable();
+		/* Pull in the interrupts that the FIQ has masked */
+		gintmsk.d32 |= ~(hcd->fiq_state->gintmsk_saved.d32);
+		gintmsk.d32 |= gintmsk_common.d32;
+		/* for the upstairs function to reenable - have to read it here in case FIQ triggers again */
+		reenable_gintmsk->d32 = gintmsk.d32;
+		local_fiq_enable();
+	}
+
+	gahbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gahbcfg);
+
+#ifdef DEBUG
+	/* if any common interrupts set */
+	if (gintsts.d32 & gintmsk_common.d32) {
+		DWC_DEBUGPL(DBG_ANY, "common_intr: gintsts=%08x  gintmsk=%08x\n",
+			    gintsts.d32, gintmsk.d32);
+	}
+#endif
+	if (!fiq_enable){
+		if (gahbcfg.b.glblintrmsk)
+			return ((gintsts.d32 & gintmsk.d32) & gintmsk_common.d32);
+		else
+			return 0;
+	} else {
+		/* Our IRQ kicker is no longer the USB hardware, it's the MPHI interface.
+		 * Can't trust the global interrupt mask bit in this case.
+		 */
+		return ((gintsts.d32 & gintmsk.d32) & gintmsk_common.d32);
+	}
+
+}
+
+/* MACRO for clearing interupt bits in GPWRDN register */
+#define CLEAR_GPWRDN_INTR(__core_if,__intr) \
+do { \
+		gpwrdn_data_t gpwrdn = {.d32=0}; \
+		gpwrdn.b.__intr = 1; \
+		DWC_MODIFY_REG32(&__core_if->core_global_regs->gpwrdn, \
+		0, gpwrdn.d32); \
+} while (0)
+
+/**
+ * Common interrupt handler.
+ *
+ * The common interrupts are those that occur in both Host and Device mode.
+ * This handler handles the following interrupts:
+ * - Mode Mismatch Interrupt
+ * - Disconnect Interrupt
+ * - OTG Interrupt
+ * - Connector ID Status Change Interrupt
+ * - Session Request Interrupt.
+ * - Resume / Remote Wakeup Detected Interrupt.
+ * - LPM Transaction Received Interrupt
+ * - ADP Transaction Received Interrupt
+ *
+ */
+int32_t dwc_otg_handle_common_intr(void *dev)
+{
+	int retval = 0;
+	gintsts_data_t gintsts;
+	gintmsk_data_t gintmsk_reenable = { .d32 = 0 };
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+	dwc_otg_device_t *otg_dev = dev;
+	dwc_otg_core_if_t *core_if = otg_dev->core_if;
+	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+	if (dwc_otg_is_device_mode(core_if))
+		core_if->frame_num = dwc_otg_get_frame_number(core_if);
+
+	if (core_if->lock)
+		DWC_SPINLOCK(core_if->lock);
+
+	if (core_if->power_down == 3 && core_if->xhib == 1) {
+		DWC_DEBUGPL(DBG_ANY, "Exiting from xHIB state\n");
+		retval |= dwc_otg_handle_xhib_exit_intr(core_if);
+		core_if->xhib = 2;
+		if (core_if->lock)
+			DWC_SPINUNLOCK(core_if->lock);
+
+		return retval;
+	}
+
+	if (core_if->hibernation_suspend <= 0) {
+		/* read_common will have to poke the FIQ's saved mask. We must then clear this mask at the end
+		 * of this handler - god only knows why it's done like this
+		 */
+		gintsts.d32 = dwc_otg_read_common_intr(core_if, &gintmsk_reenable, otg_dev->hcd);
+
+		if (gintsts.b.modemismatch) {
+			retval |= dwc_otg_handle_mode_mismatch_intr(core_if);
+		}
+		if (gintsts.b.otgintr) {
+			retval |= dwc_otg_handle_otg_intr(core_if);
+		}
+		if (gintsts.b.conidstschng) {
+			retval |=
+			    dwc_otg_handle_conn_id_status_change_intr(core_if);
+		}
+		if (gintsts.b.disconnect) {
+			retval |= dwc_otg_handle_disconnect_intr(core_if);
+		}
+		if (gintsts.b.sessreqintr) {
+			retval |= dwc_otg_handle_session_req_intr(core_if);
+		}
+		if (gintsts.b.wkupintr) {
+			retval |= dwc_otg_handle_wakeup_detected_intr(core_if);
+		}
+		if (gintsts.b.usbsuspend) {
+			retval |= dwc_otg_handle_usb_suspend_intr(core_if);
+		}
+#ifdef CONFIG_USB_DWC_OTG_LPM
+		if (gintsts.b.lpmtranrcvd) {
+			retval |= dwc_otg_handle_lpm_intr(core_if);
+		}
+#endif
+		if (gintsts.b.restoredone) {
+			gintsts.d32 = 0;
+	                if (core_if->power_down == 2)
+				core_if->hibernation_suspend = -1;
+			else if (core_if->power_down == 3 && core_if->xhib == 2) {
+				gpwrdn_data_t gpwrdn = {.d32 = 0 };
+				pcgcctl_data_t pcgcctl = {.d32 = 0 };
+				dctl_data_t dctl = {.d32 = 0 };
+
+				DWC_WRITE_REG32(&core_if->core_global_regs->
+						gintsts, 0xFFFFFFFF);
+
+				DWC_DEBUGPL(DBG_ANY,
+					    "RESTORE DONE generated\n");
+
+				gpwrdn.b.restore = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+				dwc_udelay(10);
+
+				pcgcctl.b.rstpdwnmodule = 1;
+				DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+
+				DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, core_if->gr_backup->gusbcfg_local);
+				DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, core_if->dr_backup->dcfg);
+				DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, core_if->dr_backup->dctl);
+				dwc_udelay(50);
+
+				dctl.b.pwronprgdone = 1;
+				DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+				dwc_udelay(10);
+
+				dwc_otg_restore_global_regs(core_if);
+				dwc_otg_restore_dev_regs(core_if, 0);
+
+				dctl.d32 = 0;
+				dctl.b.pwronprgdone = 1;
+				DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, 0);
+				dwc_udelay(10);
+
+				pcgcctl.d32 = 0;
+				pcgcctl.b.enbl_extnd_hiber = 1;
+				DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+
+				/* The core will be in ON STATE */
+				core_if->lx_state = DWC_OTG_L0;
+				core_if->xhib = 0;
+
+				DWC_SPINUNLOCK(core_if->lock);
+				if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+					core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+				}
+				DWC_SPINLOCK(core_if->lock);
+
+			}
+
+			gintsts.b.restoredone = 1;
+			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts,gintsts.d32);
+			DWC_PRINTF(" --Restore done interrupt received-- \n");
+			retval |= 1;
+		}
+		if (gintsts.b.portintr && dwc_otg_is_device_mode(core_if)) {
+			/* The port interrupt occurs while in device mode with HPRT0
+			 * Port Enable/Disable.
+			 */
+			gintsts.d32 = 0;
+			gintsts.b.portintr = 1;
+			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts,gintsts.d32);
+			retval |= 1;
+			gintmsk_reenable.b.portintr = 1;
+
+		}
+		/* Did we actually handle anything? if so, unmask the interrupt */
+//		fiq_print(FIQDBG_INT, otg_dev->hcd->fiq_state, "CILOUT %1d", retval);
+//		fiq_print(FIQDBG_INT, otg_dev->hcd->fiq_state, "%08x", gintsts.d32);
+//		fiq_print(FIQDBG_INT, otg_dev->hcd->fiq_state, "%08x", gintmsk_reenable.d32);
+		if (retval && fiq_enable) {
+			DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk_reenable.d32);
+		}
+
+	} else {
+		DWC_DEBUGPL(DBG_ANY, "gpwrdn=%08x\n", gpwrdn.d32);
+
+		if (gpwrdn.b.disconn_det && gpwrdn.b.disconn_det_msk) {
+			CLEAR_GPWRDN_INTR(core_if, disconn_det);
+			if (gpwrdn.b.linestate == 0) {
+				dwc_otg_handle_pwrdn_disconnect_intr(core_if);
+			} else {
+				DWC_PRINTF("Disconnect detected while linestate is not 0\n");
+			}
+
+			retval |= 1;
+		}
+		if (gpwrdn.b.lnstschng && gpwrdn.b.lnstchng_msk) {
+			CLEAR_GPWRDN_INTR(core_if, lnstschng);
+			/* remote wakeup from hibernation */
+			if (gpwrdn.b.linestate == 2 || gpwrdn.b.linestate == 1) {
+				dwc_otg_handle_pwrdn_wakeup_detected_intr(core_if);
+			} else {
+				DWC_PRINTF("gpwrdn.linestate = %d\n", gpwrdn.b.linestate);
+			}
+			retval |= 1;
+		}
+		if (gpwrdn.b.rst_det && gpwrdn.b.rst_det_msk) {
+			CLEAR_GPWRDN_INTR(core_if, rst_det);
+			if (gpwrdn.b.linestate == 0) {
+				DWC_PRINTF("Reset detected\n");
+				retval |= dwc_otg_device_hibernation_restore(core_if, 0, 1);
+			}
+		}
+		if (gpwrdn.b.srp_det && gpwrdn.b.srp_det_msk) {
+			CLEAR_GPWRDN_INTR(core_if, srp_det);
+			dwc_otg_handle_pwrdn_srp_intr(core_if);
+			retval |= 1;
+		}
+	}
+	/* Handle ADP interrupt here */
+	if (gpwrdn.b.adp_int) {
+		DWC_PRINTF("ADP interrupt\n");
+		CLEAR_GPWRDN_INTR(core_if, adp_int);
+		dwc_otg_adp_handle_intr(core_if);
+		retval |= 1;
+	}
+	if (gpwrdn.b.sts_chngint && gpwrdn.b.sts_chngint_msk) {
+		DWC_PRINTF("STS CHNG interrupt asserted\n");
+		CLEAR_GPWRDN_INTR(core_if, sts_chngint);
+		dwc_otg_handle_pwrdn_stschng_intr(otg_dev);
+
+		retval |= 1;
+	}
+	if (core_if->lock)
+		DWC_SPINUNLOCK(core_if->lock);
+	return retval;
+}
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_core_if.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_core_if.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_core_if.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_core_if.h	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,705 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_core_if.h $
+ * $Revision: #13 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#if !defined(__DWC_CORE_IF_H__)
+#define __DWC_CORE_IF_H__
+
+#include "dwc_os.h"
+
+/** @file
+ * This file defines DWC_OTG Core API
+ */
+
+struct dwc_otg_core_if;
+typedef struct dwc_otg_core_if dwc_otg_core_if_t;
+
+/** Maximum number of Periodic FIFOs */
+#define MAX_PERIO_FIFOS 15
+/** Maximum number of Periodic FIFOs */
+#define MAX_TX_FIFOS 15
+
+/** Maximum number of Endpoints/HostChannels */
+#define MAX_EPS_CHANNELS 16
+
+extern dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t * _reg_base_addr);
+extern void dwc_otg_core_init(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_cil_remove(dwc_otg_core_if_t * _core_if);
+
+extern void dwc_otg_enable_global_interrupts(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_disable_global_interrupts(dwc_otg_core_if_t * _core_if);
+
+extern uint8_t dwc_otg_is_device_mode(dwc_otg_core_if_t * _core_if);
+extern uint8_t dwc_otg_is_host_mode(dwc_otg_core_if_t * _core_if);
+
+extern uint8_t dwc_otg_is_dma_enable(dwc_otg_core_if_t * core_if);
+
+/** This function should be called on every hardware interrupt. */
+extern int32_t dwc_otg_handle_common_intr(void *otg_dev);
+
+/** @name OTG Core Parameters */
+/** @{ */
+
+/**
+ * Specifies the OTG capabilities. The driver will automatically
+ * detect the value for this parameter if none is specified.
+ * 0 - HNP and SRP capable (default)
+ * 1 - SRP Only capable
+ * 2 - No HNP/SRP capable
+ */
+extern int dwc_otg_set_param_otg_cap(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_otg_cap(dwc_otg_core_if_t * core_if);
+#define DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE 0
+#define DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE 1
+#define DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE 2
+#define dwc_param_otg_cap_default DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE
+
+extern int dwc_otg_set_param_opt(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_opt(dwc_otg_core_if_t * core_if);
+#define dwc_param_opt_default 1
+
+/**
+ * Specifies whether to use slave or DMA mode for accessing the data
+ * FIFOs. The driver will automatically detect the value for this
+ * parameter if none is specified.
+ * 0 - Slave
+ * 1 - DMA (default, if available)
+ */
+extern int dwc_otg_set_param_dma_enable(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_dma_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_dma_enable_default 1
+
+/**
+ * When DMA mode is enabled specifies whether to use
+ * address DMA or DMA Descritor mode for accessing the data
+ * FIFOs in device mode. The driver will automatically detect
+ * the value for this parameter if none is specified.
+ * 0 - address DMA
+ * 1 - DMA Descriptor(default, if available)
+ */
+extern int dwc_otg_set_param_dma_desc_enable(dwc_otg_core_if_t * core_if,
+					     int32_t val);
+extern int32_t dwc_otg_get_param_dma_desc_enable(dwc_otg_core_if_t * core_if);
+//#define dwc_param_dma_desc_enable_default 1
+#define dwc_param_dma_desc_enable_default 0 // Broadcom BCM2708
+
+/** The DMA Burst size (applicable only for External DMA
+ * Mode). 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+ */
+extern int dwc_otg_set_param_dma_burst_size(dwc_otg_core_if_t * core_if,
+					    int32_t val);
+extern int32_t dwc_otg_get_param_dma_burst_size(dwc_otg_core_if_t * core_if);
+#define dwc_param_dma_burst_size_default 32
+
+/**
+ * Specifies the maximum speed of operation in host and device mode.
+ * The actual speed depends on the speed of the attached device and
+ * the value of phy_type. The actual speed depends on the speed of the
+ * attached device.
+ * 0 - High Speed (default)
+ * 1 - Full Speed
+ */
+extern int dwc_otg_set_param_speed(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_speed(dwc_otg_core_if_t * core_if);
+#define dwc_param_speed_default 0
+#define DWC_SPEED_PARAM_HIGH 0
+#define DWC_SPEED_PARAM_FULL 1
+
+/** Specifies whether low power mode is supported when attached
+ *	to a Full Speed or Low Speed device in host mode.
+ * 0 - Don't support low power mode (default)
+ * 1 - Support low power mode
+ */
+extern int dwc_otg_set_param_host_support_fs_ls_low_power(dwc_otg_core_if_t *
+							  core_if, int32_t val);
+extern int32_t dwc_otg_get_param_host_support_fs_ls_low_power(dwc_otg_core_if_t
+							      * core_if);
+#define dwc_param_host_support_fs_ls_low_power_default 0
+
+/** Specifies the PHY clock rate in low power mode when connected to a
+ * Low Speed device in host mode. This parameter is applicable only if
+ * HOST_SUPPORT_FS_LS_LOW_POWER is enabled. If PHY_TYPE is set to FS
+ * then defaults to 6 MHZ otherwise 48 MHZ.
+ *
+ * 0 - 48 MHz
+ * 1 - 6 MHz
+ */
+extern int dwc_otg_set_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t *
+						       core_if, int32_t val);
+extern int32_t dwc_otg_get_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t *
+							   core_if);
+#define dwc_param_host_ls_low_power_phy_clk_default 0
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ 0
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ 1
+
+/**
+ * 0 - Use cC FIFO size parameters
+ * 1 - Allow dynamic FIFO sizing (default)
+ */
+extern int dwc_otg_set_param_enable_dynamic_fifo(dwc_otg_core_if_t * core_if,
+						 int32_t val);
+extern int32_t dwc_otg_get_param_enable_dynamic_fifo(dwc_otg_core_if_t *
+						     core_if);
+#define dwc_param_enable_dynamic_fifo_default 1
+
+/** Total number of 4-byte words in the data FIFO memory. This
+ * memory includes the Rx FIFO, non-periodic Tx FIFO, and periodic
+ * Tx FIFOs.
+ * 32 to 32768 (default 8192)
+ * Note: The total FIFO memory depth in the FPGA configuration is 8192.
+ */
+extern int dwc_otg_set_param_data_fifo_size(dwc_otg_core_if_t * core_if,
+					    int32_t val);
+extern int32_t dwc_otg_get_param_data_fifo_size(dwc_otg_core_if_t * core_if);
+//#define dwc_param_data_fifo_size_default 8192
+#define dwc_param_data_fifo_size_default 0xFF0 // Broadcom BCM2708
+
+/** Number of 4-byte words in the Rx FIFO in device mode when dynamic
+ * FIFO sizing is enabled.
+ * 16 to 32768 (default 1064)
+ */
+extern int dwc_otg_set_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if,
+					      int32_t val);
+extern int32_t dwc_otg_get_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if);
+#define dwc_param_dev_rx_fifo_size_default 1064
+
+/** Number of 4-byte words in the non-periodic Tx FIFO in device mode
+ * when dynamic FIFO sizing is enabled.
+ * 16 to 32768 (default 1024)
+ */
+extern int dwc_otg_set_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t *
+						     core_if, int32_t val);
+extern int32_t dwc_otg_get_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t *
+							 core_if);
+#define dwc_param_dev_nperio_tx_fifo_size_default 1024
+
+/** Number of 4-byte words in each of the periodic Tx FIFOs in device
+ * mode when dynamic FIFO sizing is enabled.
+ * 4 to 768 (default 256)
+ */
+extern int dwc_otg_set_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
+						    int32_t val, int fifo_num);
+extern int32_t dwc_otg_get_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t *
+							core_if, int fifo_num);
+#define dwc_param_dev_perio_tx_fifo_size_default 256
+
+/** Number of 4-byte words in the Rx FIFO in host mode when dynamic
+ * FIFO sizing is enabled.
+ * 16 to 32768 (default 1024)
+ */
+extern int dwc_otg_set_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if,
+					       int32_t val);
+extern int32_t dwc_otg_get_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if);
+//#define dwc_param_host_rx_fifo_size_default 1024
+#define dwc_param_host_rx_fifo_size_default 774 // Broadcom BCM2708
+
+/** Number of 4-byte words in the non-periodic Tx FIFO in host mode
+ * when Dynamic FIFO sizing is enabled in the core.
+ * 16 to 32768 (default 1024)
+ */
+extern int dwc_otg_set_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t *
+						      core_if, int32_t val);
+extern int32_t dwc_otg_get_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t *
+							  core_if);
+//#define dwc_param_host_nperio_tx_fifo_size_default 1024
+#define dwc_param_host_nperio_tx_fifo_size_default 0x100 // Broadcom BCM2708
+
+/** Number of 4-byte words in the host periodic Tx FIFO when dynamic
+ * FIFO sizing is enabled.
+ * 16 to 32768 (default 1024)
+ */
+extern int dwc_otg_set_param_host_perio_tx_fifo_size(dwc_otg_core_if_t *
+						     core_if, int32_t val);
+extern int32_t dwc_otg_get_param_host_perio_tx_fifo_size(dwc_otg_core_if_t *
+							 core_if);
+//#define dwc_param_host_perio_tx_fifo_size_default 1024
+#define dwc_param_host_perio_tx_fifo_size_default 0x200 // Broadcom BCM2708
+
+/** The maximum transfer size supported in bytes.
+ * 2047 to 65,535  (default 65,535)
+ */
+extern int dwc_otg_set_param_max_transfer_size(dwc_otg_core_if_t * core_if,
+					       int32_t val);
+extern int32_t dwc_otg_get_param_max_transfer_size(dwc_otg_core_if_t * core_if);
+#define dwc_param_max_transfer_size_default 65535
+
+/** The maximum number of packets in a transfer.
+ * 15 to 511  (default 511)
+ */
+extern int dwc_otg_set_param_max_packet_count(dwc_otg_core_if_t * core_if,
+					      int32_t val);
+extern int32_t dwc_otg_get_param_max_packet_count(dwc_otg_core_if_t * core_if);
+#define dwc_param_max_packet_count_default 511
+
+/** The number of host channel registers to use.
+ * 1 to 16 (default 12)
+ * Note: The FPGA configuration supports a maximum of 12 host channels.
+ */
+extern int dwc_otg_set_param_host_channels(dwc_otg_core_if_t * core_if,
+					   int32_t val);
+extern int32_t dwc_otg_get_param_host_channels(dwc_otg_core_if_t * core_if);
+//#define dwc_param_host_channels_default 12
+#define dwc_param_host_channels_default 8 // Broadcom BCM2708
+
+/** The number of endpoints in addition to EP0 available for device
+ * mode operations.
+ * 1 to 15 (default 6 IN and OUT)
+ * Note: The FPGA configuration supports a maximum of 6 IN and OUT
+ * endpoints in addition to EP0.
+ */
+extern int dwc_otg_set_param_dev_endpoints(dwc_otg_core_if_t * core_if,
+					   int32_t val);
+extern int32_t dwc_otg_get_param_dev_endpoints(dwc_otg_core_if_t * core_if);
+#define dwc_param_dev_endpoints_default 6
+
+/**
+ * Specifies the type of PHY interface to use. By default, the driver
+ * will automatically detect the phy_type.
+ *
+ * 0 - Full Speed PHY
+ * 1 - UTMI+ (default)
+ * 2 - ULPI
+ */
+extern int dwc_otg_set_param_phy_type(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_phy_type(dwc_otg_core_if_t * core_if);
+#define DWC_PHY_TYPE_PARAM_FS 0
+#define DWC_PHY_TYPE_PARAM_UTMI 1
+#define DWC_PHY_TYPE_PARAM_ULPI 2
+#define dwc_param_phy_type_default DWC_PHY_TYPE_PARAM_UTMI
+
+/**
+ * Specifies the UTMI+ Data Width. This parameter is
+ * applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI
+ * PHY_TYPE, this parameter indicates the data width between
+ * the MAC and the ULPI Wrapper.) Also, this parameter is
+ * applicable only if the OTG_HSPHY_WIDTH cC parameter was set
+ * to "8 and 16 bits", meaning that the core has been
+ * configured to work at either data path width.
+ *
+ * 8 or 16 bits (default 16)
+ */
+extern int dwc_otg_set_param_phy_utmi_width(dwc_otg_core_if_t * core_if,
+					    int32_t val);
+extern int32_t dwc_otg_get_param_phy_utmi_width(dwc_otg_core_if_t * core_if);
+//#define dwc_param_phy_utmi_width_default 16
+#define dwc_param_phy_utmi_width_default 8 // Broadcom BCM2708
+
+/**
+ * Specifies whether the ULPI operates at double or single
+ * data rate. This parameter is only applicable if PHY_TYPE is
+ * ULPI.
+ *
+ * 0 - single data rate ULPI interface with 8 bit wide data
+ * bus (default)
+ * 1 - double data rate ULPI interface with 4 bit wide data
+ * bus
+ */
+extern int dwc_otg_set_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if,
+					  int32_t val);
+extern int32_t dwc_otg_get_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if);
+#define dwc_param_phy_ulpi_ddr_default 0
+
+/**
+ * Specifies whether to use the internal or external supply to
+ * drive the vbus with a ULPI phy.
+ */
+extern int dwc_otg_set_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if,
+					       int32_t val);
+extern int32_t dwc_otg_get_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if);
+#define DWC_PHY_ULPI_INTERNAL_VBUS 0
+#define DWC_PHY_ULPI_EXTERNAL_VBUS 1
+#define dwc_param_phy_ulpi_ext_vbus_default DWC_PHY_ULPI_INTERNAL_VBUS
+
+/**
+ * Specifies whether to use the I2Cinterface for full speed PHY. This
+ * parameter is only applicable if PHY_TYPE is FS.
+ * 0 - No (default)
+ * 1 - Yes
+ */
+extern int dwc_otg_set_param_i2c_enable(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_i2c_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_i2c_enable_default 0
+
+extern int dwc_otg_set_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if);
+#define dwc_param_ulpi_fs_ls_default 0
+
+extern int dwc_otg_set_param_ts_dline(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_ts_dline(dwc_otg_core_if_t * core_if);
+#define dwc_param_ts_dline_default 0
+
+/**
+ * Specifies whether dedicated transmit FIFOs are
+ * enabled for non periodic IN endpoints in device mode
+ * 0 - No
+ * 1 - Yes
+ */
+extern int dwc_otg_set_param_en_multiple_tx_fifo(dwc_otg_core_if_t * core_if,
+						 int32_t val);
+extern int32_t dwc_otg_get_param_en_multiple_tx_fifo(dwc_otg_core_if_t *
+						     core_if);
+#define dwc_param_en_multiple_tx_fifo_default 1
+
+/** Number of 4-byte words in each of the Tx FIFOs in device
+ * mode when dynamic FIFO sizing is enabled.
+ * 4 to 768 (default 256)
+ */
+extern int dwc_otg_set_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if,
+					      int fifo_num, int32_t val);
+extern int32_t dwc_otg_get_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if,
+						  int fifo_num);
+#define dwc_param_dev_tx_fifo_size_default 768
+
+/** Thresholding enable flag-
+ * bit 0 - enable non-ISO Tx thresholding
+ * bit 1 - enable ISO Tx thresholding
+ * bit 2 - enable Rx thresholding
+ */
+extern int dwc_otg_set_param_thr_ctl(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_thr_ctl(dwc_otg_core_if_t * core_if, int fifo_num);
+#define dwc_param_thr_ctl_default 0
+
+/** Thresholding length for Tx
+ * FIFOs in 32 bit DWORDs
+ */
+extern int dwc_otg_set_param_tx_thr_length(dwc_otg_core_if_t * core_if,
+					   int32_t val);
+extern int32_t dwc_otg_get_tx_thr_length(dwc_otg_core_if_t * core_if);
+#define dwc_param_tx_thr_length_default 64
+
+/** Thresholding length for Rx
+ *	FIFOs in 32 bit DWORDs
+ */
+extern int dwc_otg_set_param_rx_thr_length(dwc_otg_core_if_t * core_if,
+					   int32_t val);
+extern int32_t dwc_otg_get_rx_thr_length(dwc_otg_core_if_t * core_if);
+#define dwc_param_rx_thr_length_default 64
+
+/**
+ * Specifies whether LPM (Link Power Management) support is enabled
+ */
+extern int dwc_otg_set_param_lpm_enable(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_lpm_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_lpm_enable_default 1
+
+/**
+ * Specifies whether PTI enhancement is enabled
+ */
+extern int dwc_otg_set_param_pti_enable(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_pti_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_pti_enable_default 0
+
+/**
+ * Specifies whether MPI enhancement is enabled
+ */
+extern int dwc_otg_set_param_mpi_enable(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_mpi_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_mpi_enable_default 0
+
+/**
+ * Specifies whether ADP capability is enabled
+ */
+extern int dwc_otg_set_param_adp_enable(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_adp_enable(dwc_otg_core_if_t * core_if);
+#define dwc_param_adp_enable_default 0
+
+/**
+ * Specifies whether IC_USB capability is enabled
+ */
+
+extern int dwc_otg_set_param_ic_usb_cap(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_ic_usb_cap(dwc_otg_core_if_t * core_if);
+#define dwc_param_ic_usb_cap_default 0
+
+extern int dwc_otg_set_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if,
+					   int32_t val);
+extern int32_t dwc_otg_get_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if);
+#define dwc_param_ahb_thr_ratio_default 0
+
+extern int dwc_otg_set_param_power_down(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_power_down(dwc_otg_core_if_t * core_if);
+#define dwc_param_power_down_default 0
+
+extern int dwc_otg_set_param_reload_ctl(dwc_otg_core_if_t * core_if,
+					int32_t val);
+extern int32_t dwc_otg_get_param_reload_ctl(dwc_otg_core_if_t * core_if);
+#define dwc_param_reload_ctl_default 0
+
+extern int dwc_otg_set_param_dev_out_nak(dwc_otg_core_if_t * core_if,
+										int32_t val);
+extern int32_t dwc_otg_get_param_dev_out_nak(dwc_otg_core_if_t * core_if);
+#define dwc_param_dev_out_nak_default 0
+
+extern int dwc_otg_set_param_cont_on_bna(dwc_otg_core_if_t * core_if,
+										 int32_t val);
+extern int32_t dwc_otg_get_param_cont_on_bna(dwc_otg_core_if_t * core_if);
+#define dwc_param_cont_on_bna_default 0
+
+extern int dwc_otg_set_param_ahb_single(dwc_otg_core_if_t * core_if,
+										 int32_t val);
+extern int32_t dwc_otg_get_param_ahb_single(dwc_otg_core_if_t * core_if);
+#define dwc_param_ahb_single_default 0
+
+extern int dwc_otg_set_param_otg_ver(dwc_otg_core_if_t * core_if, int32_t val);
+extern int32_t dwc_otg_get_param_otg_ver(dwc_otg_core_if_t * core_if);
+#define dwc_param_otg_ver_default 0
+
+/** @} */
+
+/** @name Access to registers and bit-fields */
+
+/**
+ * Dump core registers and SPRAM
+ */
+extern void dwc_otg_dump_dev_registers(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_dump_spram(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_dump_host_registers(dwc_otg_core_if_t * _core_if);
+extern void dwc_otg_dump_global_registers(dwc_otg_core_if_t * _core_if);
+
+/**
+ * Get host negotiation status.
+ */
+extern uint32_t dwc_otg_get_hnpstatus(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get srp status
+ */
+extern uint32_t dwc_otg_get_srpstatus(dwc_otg_core_if_t * core_if);
+
+/**
+ * Set hnpreq bit in the GOTGCTL register.
+ */
+extern void dwc_otg_set_hnpreq(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get Content of SNPSID register.
+ */
+extern uint32_t dwc_otg_get_gsnpsid(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get current mode.
+ * Returns 0 if in device mode, and 1 if in host mode.
+ */
+extern uint32_t dwc_otg_get_mode(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of hnpcapable field in the GUSBCFG register
+ */
+extern uint32_t dwc_otg_get_hnpcapable(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of hnpcapable field in the GUSBCFG register
+ */
+extern void dwc_otg_set_hnpcapable(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of srpcapable field in the GUSBCFG register
+ */
+extern uint32_t dwc_otg_get_srpcapable(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of srpcapable field in the GUSBCFG register
+ */
+extern void dwc_otg_set_srpcapable(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of devspeed field in the DCFG register
+ */
+extern uint32_t dwc_otg_get_devspeed(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of devspeed field in the DCFG register
+ */
+extern void dwc_otg_set_devspeed(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get the value of busconnected field from the HPRT0 register
+ */
+extern uint32_t dwc_otg_get_busconnected(dwc_otg_core_if_t * core_if);
+
+/**
+ * Gets the device enumeration Speed.
+ */
+extern uint32_t dwc_otg_get_enumspeed(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of prtpwr field from the HPRT0 register
+ */
+extern uint32_t dwc_otg_get_prtpower(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of flag indicating core state - hibernated or not
+ */
+extern uint32_t dwc_otg_get_core_state(dwc_otg_core_if_t * core_if);
+
+/**
+ * Set value of prtpwr field from the HPRT0 register
+ */
+extern void dwc_otg_set_prtpower(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of prtsusp field from the HPRT0 regsiter
+ */
+extern uint32_t dwc_otg_get_prtsuspend(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of prtpwr field from the HPRT0 register
+ */
+extern void dwc_otg_set_prtsuspend(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of ModeChTimEn field from the HCFG regsiter
+ */
+extern uint32_t dwc_otg_get_mode_ch_tim(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of ModeChTimEn field from the HCFG regsiter
+ */
+extern void dwc_otg_set_mode_ch_tim(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of Fram Interval field from the HFIR regsiter
+ */
+extern uint32_t dwc_otg_get_fr_interval(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of Frame Interval field from the HFIR regsiter
+ */
+extern void dwc_otg_set_fr_interval(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Set value of prtres field from the HPRT0 register
+ *FIXME Remove?
+ */
+extern void dwc_otg_set_prtresume(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of rmtwkupsig bit in DCTL register
+ */
+extern uint32_t dwc_otg_get_remotewakesig(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of prt_sleep_sts field from the GLPMCFG register
+ */
+extern uint32_t dwc_otg_get_lpm_portsleepstatus(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of rem_wkup_en field from the GLPMCFG register
+ */
+extern uint32_t dwc_otg_get_lpm_remotewakeenabled(dwc_otg_core_if_t * core_if);
+
+/**
+ * Get value of appl_resp field from the GLPMCFG register
+ */
+extern uint32_t dwc_otg_get_lpmresponse(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of appl_resp field from the GLPMCFG register
+ */
+extern void dwc_otg_set_lpmresponse(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of hsic_connect field from the GLPMCFG register
+ */
+extern uint32_t dwc_otg_get_hsic_connect(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of hsic_connect field from the GLPMCFG register
+ */
+extern void dwc_otg_set_hsic_connect(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * Get value of inv_sel_hsic field from the GLPMCFG register.
+ */
+extern uint32_t dwc_otg_get_inv_sel_hsic(dwc_otg_core_if_t * core_if);
+/**
+ * Set value of inv_sel_hsic field from the GLPMFG register.
+ */
+extern void dwc_otg_set_inv_sel_hsic(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/*
+ * Some functions for accessing registers
+ */
+
+/**
+ *  GOTGCTL register
+ */
+extern uint32_t dwc_otg_get_gotgctl(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_gotgctl(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GUSBCFG register
+ */
+extern uint32_t dwc_otg_get_gusbcfg(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_gusbcfg(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GRXFSIZ register
+ */
+extern uint32_t dwc_otg_get_grxfsiz(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_grxfsiz(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GNPTXFSIZ register
+ */
+extern uint32_t dwc_otg_get_gnptxfsiz(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_gnptxfsiz(dwc_otg_core_if_t * core_if, uint32_t val);
+
+extern uint32_t dwc_otg_get_gpvndctl(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_gpvndctl(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GGPIO register
+ */
+extern uint32_t dwc_otg_get_ggpio(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_ggpio(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GUID register
+ */
+extern uint32_t dwc_otg_get_guid(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_guid(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * HPRT0 register
+ */
+extern uint32_t dwc_otg_get_hprt0(dwc_otg_core_if_t * core_if);
+extern void dwc_otg_set_hprt0(dwc_otg_core_if_t * core_if, uint32_t val);
+
+/**
+ * GHPTXFSIZE
+ */
+extern uint32_t dwc_otg_get_hptxfsiz(dwc_otg_core_if_t * core_if);
+
+/** @} */
+
+#endif				/* __DWC_CORE_IF_H__ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_dbg.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_dbg.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_dbg.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_dbg.h	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,117 @@
+/* ==========================================================================
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_DBG_H__
+#define __DWC_OTG_DBG_H__
+
+/** @file
+ * This file defines debug levels.
+ * Debugging support vanishes in non-debug builds.
+ */
+
+/**
+ * The Debug Level bit-mask variable.
+ */
+extern uint32_t g_dbg_lvl;
+/**
+ * Set the Debug Level variable.
+ */
+static inline uint32_t SET_DEBUG_LEVEL(const uint32_t new)
+{
+	uint32_t old = g_dbg_lvl;
+	g_dbg_lvl = new;
+	return old;
+}
+
+#define DBG_USER	(0x1)
+/** When debug level has the DBG_CIL bit set, display CIL Debug messages. */
+#define DBG_CIL		(0x2)
+/** When debug level has the DBG_CILV bit set, display CIL Verbose debug
+ * messages */
+#define DBG_CILV	(0x20)
+/**  When debug level has the DBG_PCD bit set, display PCD (Device) debug
+ *  messages */
+#define DBG_PCD		(0x4)
+/** When debug level has the DBG_PCDV set, display PCD (Device) Verbose debug
+ * messages */
+#define DBG_PCDV	(0x40)
+/** When debug level has the DBG_HCD bit set, display Host debug messages */
+#define DBG_HCD		(0x8)
+/** When debug level has the DBG_HCDV bit set, display Verbose Host debug
+ * messages */
+#define DBG_HCDV	(0x80)
+/** When debug level has the DBG_HCD_URB bit set, display enqueued URBs in host
+ *  mode. */
+#define DBG_HCD_URB	(0x800)
+/** When debug level has the DBG_HCDI bit set, display host interrupt
+ *  messages. */
+#define DBG_HCDI	(0x1000)
+
+/** When debug level has any bit set, display debug messages */
+#define DBG_ANY		(0xFF)
+
+/** All debug messages off */
+#define DBG_OFF		0
+
+/** Prefix string for DWC_DEBUG print macros. */
+#define USB_DWC "DWC_otg: "
+
+/**
+ * Print a debug message when the Global debug level variable contains
+ * the bit defined in <code>lvl</code>.
+ *
+ * @param[in] lvl - Debug level, use one of the DBG_ constants above.
+ * @param[in] x - like printf
+ *
+ *    Example:<p>
+ * <code>
+ *      DWC_DEBUGPL( DBG_ANY, "%s(%p)\n", __func__, _reg_base_addr);
+ * </code>
+ * <br>
+ * results in:<br>
+ * <code>
+ * usb-DWC_otg: dwc_otg_cil_init(ca867000)
+ * </code>
+ */
+#ifdef DEBUG
+
+# define DWC_DEBUGPL(lvl, x...) do{ if ((lvl)&g_dbg_lvl)__DWC_DEBUG(USB_DWC x ); }while(0)
+# define DWC_DEBUGP(x...)	DWC_DEBUGPL(DBG_ANY, x )
+
+# define CHK_DEBUG_LEVEL(level) ((level) & g_dbg_lvl)
+
+#else
+
+# define DWC_DEBUGPL(lvl, x...) do{}while(0)
+# define DWC_DEBUGP(x...)
+
+# define CHK_DEBUG_LEVEL(level) (0)
+
+#endif /*DEBUG*/
+#endif
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_driver.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_driver.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_driver.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_driver.c	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,1749 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_driver.c $
+ * $Revision: #92 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ * The dwc_otg_driver module provides the initialization and cleanup entry
+ * points for the DWC_otg driver. This module will be dynamically installed
+ * after Linux is booted using the insmod command. When the module is
+ * installed, the dwc_otg_driver_init function is called. When the module is
+ * removed (using rmmod), the dwc_otg_driver_cleanup function is called.
+ *
+ * This module also defines a data structure for the dwc_otg_driver, which is
+ * used in conjunction with the standard ARM lm_device structure. These
+ * structures allow the OTG driver to comply with the standard Linux driver
+ * model in which devices and drivers are registered with a bus driver. This
+ * has the benefit that Linux can expose attributes of the driver and device
+ * in its special sysfs file system. Users can then read or write files in
+ * this file system to perform diagnostics on the driver components or the
+ * device.
+ */
+
+#include "dwc_otg_os_dep.h"
+#include "dwc_os.h"
+#include "dwc_otg_dbg.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_attr.h"
+#include "dwc_otg_core_if.h"
+#include "dwc_otg_pcd_if.h"
+#include "dwc_otg_hcd_if.h"
+#include "dwc_otg_fiq_fsm.h"
+
+#define DWC_DRIVER_VERSION	"3.00a 10-AUG-2012"
+#define DWC_DRIVER_DESC		"HS OTG USB Controller driver"
+
+bool microframe_schedule=true;
+
+static const char dwc_driver_name[] = "dwc_otg";
+
+
+extern int pcd_init(
+#ifdef LM_INTERFACE
+			   struct lm_device *_dev
+#elif  defined(PCI_INTERFACE)
+			   struct pci_dev *_dev
+#elif  defined(PLATFORM_INTERFACE)
+	struct platform_device *dev
+#endif
+    );
+extern int hcd_init(
+#ifdef LM_INTERFACE
+			   struct lm_device *_dev
+#elif  defined(PCI_INTERFACE)
+			   struct pci_dev *_dev
+#elif  defined(PLATFORM_INTERFACE)
+	struct platform_device *dev
+#endif
+    );
+
+extern int pcd_remove(
+#ifdef LM_INTERFACE
+			     struct lm_device *_dev
+#elif  defined(PCI_INTERFACE)
+			     struct pci_dev *_dev
+#elif  defined(PLATFORM_INTERFACE)
+	struct platform_device *_dev
+#endif
+    );
+
+extern void hcd_remove(
+#ifdef LM_INTERFACE
+			      struct lm_device *_dev
+#elif  defined(PCI_INTERFACE)
+			      struct pci_dev *_dev
+#elif  defined(PLATFORM_INTERFACE)
+	struct platform_device *_dev
+#endif
+    );
+
+extern void dwc_otg_adp_start(dwc_otg_core_if_t * core_if, uint8_t is_host);
+
+/*-------------------------------------------------------------------------*/
+/* Encapsulate the module parameter settings */
+
+struct dwc_otg_driver_module_params {
+	int32_t opt;
+	int32_t otg_cap;
+	int32_t dma_enable;
+	int32_t dma_desc_enable;
+	int32_t dma_burst_size;
+	int32_t speed;
+	int32_t host_support_fs_ls_low_power;
+	int32_t host_ls_low_power_phy_clk;
+	int32_t enable_dynamic_fifo;
+	int32_t data_fifo_size;
+	int32_t dev_rx_fifo_size;
+	int32_t dev_nperio_tx_fifo_size;
+	uint32_t dev_perio_tx_fifo_size[MAX_PERIO_FIFOS];
+	int32_t host_rx_fifo_size;
+	int32_t host_nperio_tx_fifo_size;
+	int32_t host_perio_tx_fifo_size;
+	int32_t max_transfer_size;
+	int32_t max_packet_count;
+	int32_t host_channels;
+	int32_t dev_endpoints;
+	int32_t phy_type;
+	int32_t phy_utmi_width;
+	int32_t phy_ulpi_ddr;
+	int32_t phy_ulpi_ext_vbus;
+	int32_t i2c_enable;
+	int32_t ulpi_fs_ls;
+	int32_t ts_dline;
+	int32_t en_multiple_tx_fifo;
+	uint32_t dev_tx_fifo_size[MAX_TX_FIFOS];
+	uint32_t thr_ctl;
+	uint32_t tx_thr_length;
+	uint32_t rx_thr_length;
+	int32_t pti_enable;
+	int32_t mpi_enable;
+	int32_t lpm_enable;
+	int32_t ic_usb_cap;
+	int32_t ahb_thr_ratio;
+	int32_t power_down;
+	int32_t reload_ctl;
+	int32_t dev_out_nak;
+	int32_t cont_on_bna;
+	int32_t ahb_single;
+	int32_t otg_ver;
+	int32_t adp_enable;
+};
+
+static struct dwc_otg_driver_module_params dwc_otg_module_params = {
+	.opt = -1,
+	.otg_cap = -1,
+	.dma_enable = -1,
+	.dma_desc_enable = -1,
+	.dma_burst_size = -1,
+	.speed = -1,
+	.host_support_fs_ls_low_power = -1,
+	.host_ls_low_power_phy_clk = -1,
+	.enable_dynamic_fifo = -1,
+	.data_fifo_size = -1,
+	.dev_rx_fifo_size = -1,
+	.dev_nperio_tx_fifo_size = -1,
+	.dev_perio_tx_fifo_size = {
+				   /* dev_perio_tx_fifo_size_1 */
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1,
+				   -1
+				   /* 15 */
+				   },
+	.host_rx_fifo_size = -1,
+	.host_nperio_tx_fifo_size = -1,
+	.host_perio_tx_fifo_size = -1,
+	.max_transfer_size = -1,
+	.max_packet_count = -1,
+	.host_channels = -1,
+	.dev_endpoints = -1,
+	.phy_type = -1,
+	.phy_utmi_width = -1,
+	.phy_ulpi_ddr = -1,
+	.phy_ulpi_ext_vbus = -1,
+	.i2c_enable = -1,
+	.ulpi_fs_ls = -1,
+	.ts_dline = -1,
+	.en_multiple_tx_fifo = -1,
+	.dev_tx_fifo_size = {
+			     /* dev_tx_fifo_size */
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1,
+			     -1
+			     /* 15 */
+			     },
+	.thr_ctl = -1,
+	.tx_thr_length = -1,
+	.rx_thr_length = -1,
+	.pti_enable = -1,
+	.mpi_enable = -1,
+	.lpm_enable = 0,
+	.ic_usb_cap = -1,
+	.ahb_thr_ratio = -1,
+	.power_down = -1,
+	.reload_ctl = -1,
+	.dev_out_nak = -1,
+	.cont_on_bna = -1,
+	.ahb_single = -1,
+	.otg_ver = -1,
+	.adp_enable = -1,
+};
+
+//Global variable to switch the fiq fix on or off
+bool fiq_enable = 1;
+// Global variable to enable the split transaction fix
+bool fiq_fsm_enable = true;
+//Bulk split-transaction NAK holdoff in microframes
+uint16_t nak_holdoff = 8;
+
+unsigned short fiq_fsm_mask = 0x07;
+
+/**
+ * This function shows the Driver Version.
+ */
+static ssize_t version_show(struct device_driver *dev, char *buf)
+{
+	return snprintf(buf, sizeof(DWC_DRIVER_VERSION) + 2, "%s\n",
+			DWC_DRIVER_VERSION);
+}
+
+static DRIVER_ATTR(version, S_IRUGO, version_show, NULL);
+
+/**
+ * Global Debug Level Mask.
+ */
+uint32_t g_dbg_lvl = 0;		/* OFF */
+
+/**
+ * This function shows the driver Debug Level.
+ */
+static ssize_t dbg_level_show(struct device_driver *drv, char *buf)
+{
+	return sprintf(buf, "0x%0x\n", g_dbg_lvl);
+}
+
+/**
+ * This function stores the driver Debug Level.
+ */
+static ssize_t dbg_level_store(struct device_driver *drv, const char *buf,
+			       size_t count)
+{
+	g_dbg_lvl = simple_strtoul(buf, NULL, 16);
+	return count;
+}
+
+static DRIVER_ATTR(debuglevel, S_IRUGO | S_IWUSR, dbg_level_show,
+		   dbg_level_store);
+
+/**
+ * This function is called during module intialization
+ * to pass module parameters to the DWC_OTG CORE.
+ */
+static int set_parameters(dwc_otg_core_if_t * core_if)
+{
+	int retval = 0;
+	int i;
+
+	if (dwc_otg_module_params.otg_cap != -1) {
+		retval +=
+		    dwc_otg_set_param_otg_cap(core_if,
+					      dwc_otg_module_params.otg_cap);
+	}
+	if (dwc_otg_module_params.dma_enable != -1) {
+		retval +=
+		    dwc_otg_set_param_dma_enable(core_if,
+						 dwc_otg_module_params.
+						 dma_enable);
+	}
+	if (dwc_otg_module_params.dma_desc_enable != -1) {
+		retval +=
+		    dwc_otg_set_param_dma_desc_enable(core_if,
+						      dwc_otg_module_params.
+						      dma_desc_enable);
+	}
+	if (dwc_otg_module_params.opt != -1) {
+		retval +=
+		    dwc_otg_set_param_opt(core_if, dwc_otg_module_params.opt);
+	}
+	if (dwc_otg_module_params.dma_burst_size != -1) {
+		retval +=
+		    dwc_otg_set_param_dma_burst_size(core_if,
+						     dwc_otg_module_params.
+						     dma_burst_size);
+	}
+	if (dwc_otg_module_params.host_support_fs_ls_low_power != -1) {
+		retval +=
+		    dwc_otg_set_param_host_support_fs_ls_low_power(core_if,
+								   dwc_otg_module_params.
+								   host_support_fs_ls_low_power);
+	}
+	if (dwc_otg_module_params.enable_dynamic_fifo != -1) {
+		retval +=
+		    dwc_otg_set_param_enable_dynamic_fifo(core_if,
+							  dwc_otg_module_params.
+							  enable_dynamic_fifo);
+	}
+	if (dwc_otg_module_params.data_fifo_size != -1) {
+		retval +=
+		    dwc_otg_set_param_data_fifo_size(core_if,
+						     dwc_otg_module_params.
+						     data_fifo_size);
+	}
+	if (dwc_otg_module_params.dev_rx_fifo_size != -1) {
+		retval +=
+		    dwc_otg_set_param_dev_rx_fifo_size(core_if,
+						       dwc_otg_module_params.
+						       dev_rx_fifo_size);
+	}
+	if (dwc_otg_module_params.dev_nperio_tx_fifo_size != -1) {
+		retval +=
+		    dwc_otg_set_param_dev_nperio_tx_fifo_size(core_if,
+							      dwc_otg_module_params.
+							      dev_nperio_tx_fifo_size);
+	}
+	if (dwc_otg_module_params.host_rx_fifo_size != -1) {
+		retval +=
+		    dwc_otg_set_param_host_rx_fifo_size(core_if,
+							dwc_otg_module_params.host_rx_fifo_size);
+	}
+	if (dwc_otg_module_params.host_nperio_tx_fifo_size != -1) {
+		retval +=
+		    dwc_otg_set_param_host_nperio_tx_fifo_size(core_if,
+							       dwc_otg_module_params.
+							       host_nperio_tx_fifo_size);
+	}
+	if (dwc_otg_module_params.host_perio_tx_fifo_size != -1) {
+		retval +=
+		    dwc_otg_set_param_host_perio_tx_fifo_size(core_if,
+							      dwc_otg_module_params.
+							      host_perio_tx_fifo_size);
+	}
+	if (dwc_otg_module_params.max_transfer_size != -1) {
+		retval +=
+		    dwc_otg_set_param_max_transfer_size(core_if,
+							dwc_otg_module_params.
+							max_transfer_size);
+	}
+	if (dwc_otg_module_params.max_packet_count != -1) {
+		retval +=
+		    dwc_otg_set_param_max_packet_count(core_if,
+						       dwc_otg_module_params.
+						       max_packet_count);
+	}
+	if (dwc_otg_module_params.host_channels != -1) {
+		retval +=
+		    dwc_otg_set_param_host_channels(core_if,
+						    dwc_otg_module_params.
+						    host_channels);
+	}
+	if (dwc_otg_module_params.dev_endpoints != -1) {
+		retval +=
+		    dwc_otg_set_param_dev_endpoints(core_if,
+						    dwc_otg_module_params.
+						    dev_endpoints);
+	}
+	if (dwc_otg_module_params.phy_type != -1) {
+		retval +=
+		    dwc_otg_set_param_phy_type(core_if,
+					       dwc_otg_module_params.phy_type);
+	}
+	if (dwc_otg_module_params.speed != -1) {
+		retval +=
+		    dwc_otg_set_param_speed(core_if,
+					    dwc_otg_module_params.speed);
+	}
+	if (dwc_otg_module_params.host_ls_low_power_phy_clk != -1) {
+		retval +=
+		    dwc_otg_set_param_host_ls_low_power_phy_clk(core_if,
+								dwc_otg_module_params.
+								host_ls_low_power_phy_clk);
+	}
+	if (dwc_otg_module_params.phy_ulpi_ddr != -1) {
+		retval +=
+		    dwc_otg_set_param_phy_ulpi_ddr(core_if,
+						   dwc_otg_module_params.
+						   phy_ulpi_ddr);
+	}
+	if (dwc_otg_module_params.phy_ulpi_ext_vbus != -1) {
+		retval +=
+		    dwc_otg_set_param_phy_ulpi_ext_vbus(core_if,
+							dwc_otg_module_params.
+							phy_ulpi_ext_vbus);
+	}
+	if (dwc_otg_module_params.phy_utmi_width != -1) {
+		retval +=
+		    dwc_otg_set_param_phy_utmi_width(core_if,
+						     dwc_otg_module_params.
+						     phy_utmi_width);
+	}
+	if (dwc_otg_module_params.ulpi_fs_ls != -1) {
+		retval +=
+		    dwc_otg_set_param_ulpi_fs_ls(core_if,
+						 dwc_otg_module_params.ulpi_fs_ls);
+	}
+	if (dwc_otg_module_params.ts_dline != -1) {
+		retval +=
+		    dwc_otg_set_param_ts_dline(core_if,
+					       dwc_otg_module_params.ts_dline);
+	}
+	if (dwc_otg_module_params.i2c_enable != -1) {
+		retval +=
+		    dwc_otg_set_param_i2c_enable(core_if,
+						 dwc_otg_module_params.
+						 i2c_enable);
+	}
+	if (dwc_otg_module_params.en_multiple_tx_fifo != -1) {
+		retval +=
+		    dwc_otg_set_param_en_multiple_tx_fifo(core_if,
+							  dwc_otg_module_params.
+							  en_multiple_tx_fifo);
+	}
+	for (i = 0; i < 15; i++) {
+		if (dwc_otg_module_params.dev_perio_tx_fifo_size[i] != -1) {
+			retval +=
+			    dwc_otg_set_param_dev_perio_tx_fifo_size(core_if,
+								     dwc_otg_module_params.
+								     dev_perio_tx_fifo_size
+								     [i], i);
+		}
+	}
+
+	for (i = 0; i < 15; i++) {
+		if (dwc_otg_module_params.dev_tx_fifo_size[i] != -1) {
+			retval += dwc_otg_set_param_dev_tx_fifo_size(core_if,
+								     dwc_otg_module_params.
+								     dev_tx_fifo_size
+								     [i], i);
+		}
+	}
+	if (dwc_otg_module_params.thr_ctl != -1) {
+		retval +=
+		    dwc_otg_set_param_thr_ctl(core_if,
+					      dwc_otg_module_params.thr_ctl);
+	}
+	if (dwc_otg_module_params.mpi_enable != -1) {
+		retval +=
+		    dwc_otg_set_param_mpi_enable(core_if,
+						 dwc_otg_module_params.
+						 mpi_enable);
+	}
+	if (dwc_otg_module_params.pti_enable != -1) {
+		retval +=
+		    dwc_otg_set_param_pti_enable(core_if,
+						 dwc_otg_module_params.
+						 pti_enable);
+	}
+	if (dwc_otg_module_params.lpm_enable != -1) {
+		retval +=
+		    dwc_otg_set_param_lpm_enable(core_if,
+						 dwc_otg_module_params.
+						 lpm_enable);
+	}
+	if (dwc_otg_module_params.ic_usb_cap != -1) {
+		retval +=
+		    dwc_otg_set_param_ic_usb_cap(core_if,
+						 dwc_otg_module_params.
+						 ic_usb_cap);
+	}
+	if (dwc_otg_module_params.tx_thr_length != -1) {
+		retval +=
+		    dwc_otg_set_param_tx_thr_length(core_if,
+						    dwc_otg_module_params.tx_thr_length);
+	}
+	if (dwc_otg_module_params.rx_thr_length != -1) {
+		retval +=
+		    dwc_otg_set_param_rx_thr_length(core_if,
+						    dwc_otg_module_params.
+						    rx_thr_length);
+	}
+	if (dwc_otg_module_params.ahb_thr_ratio != -1) {
+		retval +=
+		    dwc_otg_set_param_ahb_thr_ratio(core_if,
+						    dwc_otg_module_params.ahb_thr_ratio);
+	}
+	if (dwc_otg_module_params.power_down != -1) {
+		retval +=
+		    dwc_otg_set_param_power_down(core_if,
+						 dwc_otg_module_params.power_down);
+	}
+	if (dwc_otg_module_params.reload_ctl != -1) {
+		retval +=
+		    dwc_otg_set_param_reload_ctl(core_if,
+						 dwc_otg_module_params.reload_ctl);
+	}
+
+	if (dwc_otg_module_params.dev_out_nak != -1) {
+		retval +=
+			dwc_otg_set_param_dev_out_nak(core_if,
+			dwc_otg_module_params.dev_out_nak);
+	}
+
+	if (dwc_otg_module_params.cont_on_bna != -1) {
+		retval +=
+			dwc_otg_set_param_cont_on_bna(core_if,
+			dwc_otg_module_params.cont_on_bna);
+	}
+
+	if (dwc_otg_module_params.ahb_single != -1) {
+		retval +=
+			dwc_otg_set_param_ahb_single(core_if,
+			dwc_otg_module_params.ahb_single);
+	}
+
+	if (dwc_otg_module_params.otg_ver != -1) {
+		retval +=
+		    dwc_otg_set_param_otg_ver(core_if,
+					      dwc_otg_module_params.otg_ver);
+	}
+	if (dwc_otg_module_params.adp_enable != -1) {
+		retval +=
+		    dwc_otg_set_param_adp_enable(core_if,
+						 dwc_otg_module_params.
+						 adp_enable);
+	}
+	return retval;
+}
+
+/**
+ * This function is the top level interrupt handler for the Common
+ * (Device and host modes) interrupts.
+ */
+static irqreturn_t dwc_otg_common_irq(int irq, void *dev)
+{
+	int32_t retval = IRQ_NONE;
+
+	retval = dwc_otg_handle_common_intr(dev);
+	if (retval != 0) {
+		S3C2410X_CLEAR_EINTPEND();
+	}
+	return IRQ_RETVAL(retval);
+}
+
+/**
+ * This function is called when a lm_device is unregistered with the
+ * dwc_otg_driver. This happens, for example, when the rmmod command is
+ * executed. The device may or may not be electrically present. If it is
+ * present, the driver stops device processing. Any resources used on behalf
+ * of this device are freed.
+ *
+ * @param _dev
+ */
+#ifdef LM_INTERFACE
+#define REM_RETVAL(n)
+static void dwc_otg_driver_remove(	 struct lm_device *_dev )
+{       dwc_otg_device_t *otg_dev = lm_get_drvdata(_dev);
+#elif  defined(PCI_INTERFACE)
+#define REM_RETVAL(n)
+static void dwc_otg_driver_remove(	 struct pci_dev *_dev )
+{	dwc_otg_device_t *otg_dev = pci_get_drvdata(_dev);
+#elif  defined(PLATFORM_INTERFACE)
+#define REM_RETVAL(n) n
+static int dwc_otg_driver_remove(        struct platform_device *_dev )
+{       dwc_otg_device_t *otg_dev = platform_get_drvdata(_dev);
+#endif
+
+	DWC_DEBUGPL(DBG_ANY, "%s(%p) otg_dev %p\n", __func__, _dev, otg_dev);
+
+	if (!otg_dev) {
+		/* Memory allocation for the dwc_otg_device failed. */
+		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev NULL!\n", __func__);
+                return REM_RETVAL(-ENOMEM);
+	}
+#ifndef DWC_DEVICE_ONLY
+	if (otg_dev->hcd) {
+		hcd_remove(_dev);
+	} else {
+		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->hcd NULL!\n", __func__);
+                return REM_RETVAL(-EINVAL);
+	}
+#endif
+
+#ifndef DWC_HOST_ONLY
+	if (otg_dev->pcd) {
+		pcd_remove(_dev);
+	} else {
+		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->pcd NULL!\n", __func__);
+                return REM_RETVAL(-EINVAL);
+	}
+#endif
+	/*
+	 * Free the IRQ
+	 */
+	if (otg_dev->common_irq_installed) {
+#ifdef PLATFORM_INTERFACE
+		free_irq(platform_get_irq(_dev, 0), otg_dev);
+#else
+		free_irq(_dev->irq, otg_dev);
+#endif
+        } else {
+		DWC_DEBUGPL(DBG_ANY, "%s: There is no installed irq!\n", __func__);
+		return REM_RETVAL(-ENXIO);
+	}
+
+	if (otg_dev->core_if) {
+		dwc_otg_cil_remove(otg_dev->core_if);
+	} else {
+		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->core_if NULL!\n", __func__);
+		return REM_RETVAL(-ENXIO);
+	}
+
+	/*
+	 * Remove the device attributes
+	 */
+	dwc_otg_attr_remove(_dev);
+
+	/*
+	 * Return the memory.
+	 */
+	if (otg_dev->os_dep.base) {
+		iounmap(otg_dev->os_dep.base);
+	}
+	DWC_FREE(otg_dev);
+
+	/*
+	 * Clear the drvdata pointer.
+	 */
+#ifdef LM_INTERFACE
+	lm_set_drvdata(_dev, 0);
+#elif defined(PCI_INTERFACE)
+        release_mem_region(otg_dev->os_dep.rsrc_start,
+                           otg_dev->os_dep.rsrc_len);
+	pci_set_drvdata(_dev, 0);
+#elif  defined(PLATFORM_INTERFACE)
+        platform_set_drvdata(_dev, 0);
+#endif
+        return REM_RETVAL(0);
+}
+
+/**
+ * This function is called when an lm_device is bound to a
+ * dwc_otg_driver. It creates the driver components required to
+ * control the device (CIL, HCD, and PCD) and it initializes the
+ * device. The driver components are stored in a dwc_otg_device
+ * structure. A reference to the dwc_otg_device is saved in the
+ * lm_device. This allows the driver to access the dwc_otg_device
+ * structure on subsequent calls to driver methods for this device.
+ *
+ * @param _dev Bus device
+ */
+static int dwc_otg_driver_probe(
+#ifdef LM_INTERFACE
+				       struct lm_device *_dev
+#elif defined(PCI_INTERFACE)
+				       struct pci_dev *_dev,
+				       const struct pci_device_id *id
+#elif  defined(PLATFORM_INTERFACE)
+                                       struct platform_device *_dev
+#endif
+    )
+{
+	int retval = 0;
+	dwc_otg_device_t *dwc_otg_device;
+        int devirq;
+
+	dev_dbg(&_dev->dev, "dwc_otg_driver_probe(%p)\n", _dev);
+#ifdef LM_INTERFACE
+	dev_dbg(&_dev->dev, "start=0x%08x\n", (unsigned)_dev->resource.start);
+#elif defined(PCI_INTERFACE)
+	if (!id) {
+		DWC_ERROR("Invalid pci_device_id %p", id);
+		return -EINVAL;
+	}
+
+	if (!_dev || (pci_enable_device(_dev) < 0)) {
+		DWC_ERROR("Invalid pci_device %p", _dev);
+		return -ENODEV;
+	}
+	dev_dbg(&_dev->dev, "start=0x%08x\n", (unsigned)pci_resource_start(_dev,0));
+	/* other stuff needed as well? */
+
+#elif  defined(PLATFORM_INTERFACE)
+	dev_dbg(&_dev->dev, "start=0x%08x (len 0x%x)\n",
+                (unsigned)_dev->resource->start,
+                (unsigned)(_dev->resource->end - _dev->resource->start));
+#endif
+
+	dwc_otg_device = DWC_ALLOC(sizeof(dwc_otg_device_t));
+
+	if (!dwc_otg_device) {
+		dev_err(&_dev->dev, "kmalloc of dwc_otg_device failed\n");
+		return -ENOMEM;
+	}
+
+	memset(dwc_otg_device, 0, sizeof(*dwc_otg_device));
+	dwc_otg_device->os_dep.reg_offset = 0xFFFFFFFF;
+
+	/*
+	 * Map the DWC_otg Core memory into virtual address space.
+	 */
+#ifdef LM_INTERFACE
+	dwc_otg_device->os_dep.base = ioremap(_dev->resource.start, SZ_256K);
+
+	if (!dwc_otg_device->os_dep.base) {
+		dev_err(&_dev->dev, "ioremap() failed\n");
+		DWC_FREE(dwc_otg_device);
+		return -ENOMEM;
+	}
+	dev_dbg(&_dev->dev, "base=0x%08x\n",
+		(unsigned)dwc_otg_device->os_dep.base);
+#elif defined(PCI_INTERFACE)
+	_dev->current_state = PCI_D0;
+	_dev->dev.power.power_state = PMSG_ON;
+
+	if (!_dev->irq) {
+		DWC_ERROR("Found HC with no IRQ. Check BIOS/PCI %s setup!",
+			  pci_name(_dev));
+		iounmap(dwc_otg_device->os_dep.base);
+		DWC_FREE(dwc_otg_device);
+		return -ENODEV;
+	}
+
+	dwc_otg_device->os_dep.rsrc_start = pci_resource_start(_dev, 0);
+	dwc_otg_device->os_dep.rsrc_len = pci_resource_len(_dev, 0);
+	DWC_DEBUGPL(DBG_ANY, "PCI resource: start=%08x, len=%08x\n",
+		    (unsigned)dwc_otg_device->os_dep.rsrc_start,
+		    (unsigned)dwc_otg_device->os_dep.rsrc_len);
+	if (!request_mem_region
+	    (dwc_otg_device->os_dep.rsrc_start, dwc_otg_device->os_dep.rsrc_len,
+	     "dwc_otg")) {
+		dev_dbg(&_dev->dev, "error requesting memory\n");
+		iounmap(dwc_otg_device->os_dep.base);
+		DWC_FREE(dwc_otg_device);
+		return -EFAULT;
+	}
+
+	dwc_otg_device->os_dep.base =
+	    ioremap_nocache(dwc_otg_device->os_dep.rsrc_start,
+			    dwc_otg_device->os_dep.rsrc_len);
+	if (dwc_otg_device->os_dep.base == NULL) {
+		dev_dbg(&_dev->dev, "error mapping memory\n");
+		release_mem_region(dwc_otg_device->os_dep.rsrc_start,
+				   dwc_otg_device->os_dep.rsrc_len);
+		iounmap(dwc_otg_device->os_dep.base);
+		DWC_FREE(dwc_otg_device);
+		return -EFAULT;
+	}
+	dev_dbg(&_dev->dev, "base=0x%p (before adjust) \n",
+		dwc_otg_device->os_dep.base);
+	dwc_otg_device->os_dep.base = (char *)dwc_otg_device->os_dep.base;
+	dev_dbg(&_dev->dev, "base=0x%p (after adjust) \n",
+		dwc_otg_device->os_dep.base);
+	dev_dbg(&_dev->dev, "%s: mapped PA 0x%x to VA 0x%p\n", __func__,
+		(unsigned)dwc_otg_device->os_dep.rsrc_start,
+		dwc_otg_device->os_dep.base);
+
+	pci_set_master(_dev);
+	pci_set_drvdata(_dev, dwc_otg_device);
+#elif defined(PLATFORM_INTERFACE)
+        DWC_DEBUGPL(DBG_ANY,"Platform resource: start=%08x, len=%08x\n",
+                    _dev->resource->start,
+                    _dev->resource->end - _dev->resource->start + 1);
+#if 1
+        if (!request_mem_region(_dev->resource[0].start,
+                                _dev->resource[0].end - _dev->resource[0].start + 1,
+                                "dwc_otg")) {
+          dev_dbg(&_dev->dev, "error reserving mapped memory\n");
+          retval = -EFAULT;
+          goto fail;
+        }
+
+	dwc_otg_device->os_dep.base = ioremap_nocache(_dev->resource[0].start,
+                                                      _dev->resource[0].end -
+                                                      _dev->resource[0].start+1);
+	if (fiq_enable)
+	{
+		if (!request_mem_region(_dev->resource[1].start,
+	                                _dev->resource[1].end - _dev->resource[1].start + 1,
+	                                "dwc_otg")) {
+	          dev_dbg(&_dev->dev, "error reserving mapped memory\n");
+	          retval = -EFAULT;
+	          goto fail;
+	}
+
+		dwc_otg_device->os_dep.mphi_base = ioremap_nocache(_dev->resource[1].start,
+							    _dev->resource[1].end -
+							    _dev->resource[1].start + 1);
+	}
+
+#else
+        {
+                struct map_desc desc = {
+                    .virtual = IO_ADDRESS((unsigned)_dev->resource->start),
+                    .pfn     = __phys_to_pfn((unsigned)_dev->resource->start),
+                    .length  = SZ_128K,
+                    .type    = MT_DEVICE
+                };
+                iotable_init(&desc, 1);
+                dwc_otg_device->os_dep.base = (void *)desc.virtual;
+        }
+#endif
+	if (!dwc_otg_device->os_dep.base) {
+		dev_err(&_dev->dev, "ioremap() failed\n");
+		retval = -ENOMEM;
+		goto fail;
+	}
+	dev_dbg(&_dev->dev, "base=0x%08x\n",
+                (unsigned)dwc_otg_device->os_dep.base);
+#endif
+
+	/*
+	 * Initialize driver data to point to the global DWC_otg
+	 * Device structure.
+	 */
+#ifdef LM_INTERFACE
+	lm_set_drvdata(_dev, dwc_otg_device);
+#elif defined(PLATFORM_INTERFACE)
+	platform_set_drvdata(_dev, dwc_otg_device);
+#endif
+	dev_dbg(&_dev->dev, "dwc_otg_device=0x%p\n", dwc_otg_device);
+
+	dwc_otg_device->core_if = dwc_otg_cil_init(dwc_otg_device->os_dep.base);
+        DWC_DEBUGPL(DBG_HCDV, "probe of device %p given core_if %p\n",
+                    dwc_otg_device, dwc_otg_device->core_if);//GRAYG
+
+	if (!dwc_otg_device->core_if) {
+		dev_err(&_dev->dev, "CIL initialization failed!\n");
+		retval = -ENOMEM;
+		goto fail;
+	}
+
+	dev_dbg(&_dev->dev, "Calling get_gsnpsid\n");
+	/*
+	 * Attempt to ensure this device is really a DWC_otg Controller.
+	 * Read and verify the SNPSID register contents. The value should be
+	 * 0x45F42XXX or 0x45F42XXX, which corresponds to either "OT2" or "OTG3",
+	 * as in "OTG version 2.XX" or "OTG version 3.XX".
+	 */
+
+	if (((dwc_otg_get_gsnpsid(dwc_otg_device->core_if) & 0xFFFFF000) !=	0x4F542000) &&
+		((dwc_otg_get_gsnpsid(dwc_otg_device->core_if) & 0xFFFFF000) != 0x4F543000)) {
+		dev_err(&_dev->dev, "Bad value for SNPSID: 0x%08x\n",
+			dwc_otg_get_gsnpsid(dwc_otg_device->core_if));
+		retval = -EINVAL;
+		goto fail;
+	}
+
+	/*
+	 * Validate parameter values.
+	 */
+	dev_dbg(&_dev->dev, "Calling set_parameters\n");
+	if (set_parameters(dwc_otg_device->core_if)) {
+		retval = -EINVAL;
+		goto fail;
+	}
+
+	/*
+	 * Create Device Attributes in sysfs
+	 */
+	dev_dbg(&_dev->dev, "Calling attr_create\n");
+	dwc_otg_attr_create(_dev);
+
+	/*
+	 * Disable the global interrupt until all the interrupt
+	 * handlers are installed.
+	 */
+	dev_dbg(&_dev->dev, "Calling disable_global_interrupts\n");
+	dwc_otg_disable_global_interrupts(dwc_otg_device->core_if);
+
+	/*
+	 * Install the interrupt handler for the common interrupts before
+	 * enabling common interrupts in core_init below.
+	 */
+
+#if defined(PLATFORM_INTERFACE)
+	devirq = platform_get_irq(_dev, fiq_enable ? 0 : 1);
+#else
+	devirq = _dev->irq;
+#endif
+	DWC_DEBUGPL(DBG_CIL, "registering (common) handler for irq%d\n",
+		    devirq);
+	dev_dbg(&_dev->dev, "Calling request_irq(%d)\n", devirq);
+	retval = request_irq(devirq, dwc_otg_common_irq,
+                             IRQF_SHARED,
+                             "dwc_otg", dwc_otg_device);
+	if (retval) {
+		DWC_ERROR("request of irq%d failed\n", devirq);
+		retval = -EBUSY;
+		goto fail;
+	} else {
+		dwc_otg_device->common_irq_installed = 1;
+	}
+
+#ifndef IRQF_TRIGGER_LOW
+#if defined(LM_INTERFACE) || defined(PLATFORM_INTERFACE)
+	dev_dbg(&_dev->dev, "Calling set_irq_type\n");
+	set_irq_type(devirq,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30))
+                     IRQT_LOW
+#else
+                     IRQ_TYPE_LEVEL_LOW
+#endif
+                    );
+#endif
+#endif /*IRQF_TRIGGER_LOW*/
+
+	/*
+	 * Initialize the DWC_otg core.
+	 */
+	dev_dbg(&_dev->dev, "Calling dwc_otg_core_init\n");
+	dwc_otg_core_init(dwc_otg_device->core_if);
+
+#ifndef DWC_HOST_ONLY
+	/*
+	 * Initialize the PCD
+	 */
+	dev_dbg(&_dev->dev, "Calling pcd_init\n");
+	retval = pcd_init(_dev);
+	if (retval != 0) {
+		DWC_ERROR("pcd_init failed\n");
+		dwc_otg_device->pcd = NULL;
+		goto fail;
+	}
+#endif
+#ifndef DWC_DEVICE_ONLY
+	/*
+	 * Initialize the HCD
+	 */
+	dev_dbg(&_dev->dev, "Calling hcd_init\n");
+	retval = hcd_init(_dev);
+	if (retval != 0) {
+		DWC_ERROR("hcd_init failed\n");
+		dwc_otg_device->hcd = NULL;
+		goto fail;
+	}
+#endif
+        /* Recover from drvdata having been overwritten by hcd_init() */
+#ifdef LM_INTERFACE
+	lm_set_drvdata(_dev, dwc_otg_device);
+#elif defined(PLATFORM_INTERFACE)
+	platform_set_drvdata(_dev, dwc_otg_device);
+#elif defined(PCI_INTERFACE)
+	pci_set_drvdata(_dev, dwc_otg_device);
+	dwc_otg_device->os_dep.pcidev = _dev;
+#endif
+
+	/*
+	 * Enable the global interrupt after all the interrupt
+	 * handlers are installed if there is no ADP support else
+	 * perform initial actions required for Internal ADP logic.
+	 */
+	if (!dwc_otg_get_param_adp_enable(dwc_otg_device->core_if)) {
+	        dev_dbg(&_dev->dev, "Calling enable_global_interrupts\n");
+		dwc_otg_enable_global_interrupts(dwc_otg_device->core_if);
+	        dev_dbg(&_dev->dev, "Done\n");
+	} else
+		dwc_otg_adp_start(dwc_otg_device->core_if,
+							dwc_otg_is_host_mode(dwc_otg_device->core_if));
+
+	return 0;
+
+fail:
+	dwc_otg_driver_remove(_dev);
+	return retval;
+}
+
+/**
+ * This structure defines the methods to be called by a bus driver
+ * during the lifecycle of a device on that bus. Both drivers and
+ * devices are registered with a bus driver. The bus driver matches
+ * devices to drivers based on information in the device and driver
+ * structures.
+ *
+ * The probe function is called when the bus driver matches a device
+ * to this driver. The remove function is called when a device is
+ * unregistered with the bus driver.
+ */
+#ifdef LM_INTERFACE
+static struct lm_driver dwc_otg_driver = {
+	.drv = {.name = (char *)dwc_driver_name,},
+	.probe = dwc_otg_driver_probe,
+	.remove = dwc_otg_driver_remove,
+        // 'suspend' and 'resume' absent
+};
+#elif defined(PCI_INTERFACE)
+static const struct pci_device_id pci_ids[] = { {
+						 PCI_DEVICE(0x16c3, 0xabcd),
+						 .driver_data =
+						 (unsigned long)0xdeadbeef,
+						 }, { /* end: all zeroes */ }
+};
+
+MODULE_DEVICE_TABLE(pci, pci_ids);
+
+/* pci driver glue; this is a "new style" PCI driver module */
+static struct pci_driver dwc_otg_driver = {
+	.name = "dwc_otg",
+	.id_table = pci_ids,
+
+	.probe = dwc_otg_driver_probe,
+	.remove = dwc_otg_driver_remove,
+
+	.driver = {
+		   .name = (char *)dwc_driver_name,
+		   },
+};
+#elif defined(PLATFORM_INTERFACE)
+static struct platform_device_id platform_ids[] = {
+        {
+              .name = "bcm2708_usb",
+              .driver_data = (kernel_ulong_t) 0xdeadbeef,
+        },
+        { /* end: all zeroes */ }
+};
+MODULE_DEVICE_TABLE(platform, platform_ids);
+
+static struct platform_driver dwc_otg_driver = {
+	.driver = {
+		.name = (char *)dwc_driver_name,
+		},
+        .id_table = platform_ids,
+
+	.probe = dwc_otg_driver_probe,
+	.remove = dwc_otg_driver_remove,
+        // no 'shutdown', 'suspend', 'resume', 'suspend_late' or 'resume_early'
+};
+#endif
+
+/**
+ * This function is called when the dwc_otg_driver is installed with the
+ * insmod command. It registers the dwc_otg_driver structure with the
+ * appropriate bus driver. This will cause the dwc_otg_driver_probe function
+ * to be called. In addition, the bus driver will automatically expose
+ * attributes defined for the device and driver in the special sysfs file
+ * system.
+ *
+ * @return
+ */
+static int __init dwc_otg_driver_init(void)
+{
+	int retval = 0;
+	int error;
+        struct device_driver *drv;
+
+	if(fiq_fsm_enable && !fiq_enable) {
+		printk(KERN_WARNING "dwc_otg: fiq_fsm_enable was set without fiq_enable! Correcting.\n");
+		fiq_enable = 1;
+	}
+
+	printk(KERN_INFO "%s: version %s (%s bus)\n", dwc_driver_name,
+	       DWC_DRIVER_VERSION,
+#ifdef LM_INTERFACE
+               "logicmodule");
+	retval = lm_driver_register(&dwc_otg_driver);
+        drv = &dwc_otg_driver.drv;
+#elif defined(PCI_INTERFACE)
+               "pci");
+	retval = pci_register_driver(&dwc_otg_driver);
+        drv = &dwc_otg_driver.driver;
+#elif defined(PLATFORM_INTERFACE)
+               "platform");
+	retval = platform_driver_register(&dwc_otg_driver);
+        drv = &dwc_otg_driver.driver;
+#endif
+	if (retval < 0) {
+		printk(KERN_ERR "%s retval=%d\n", __func__, retval);
+		return retval;
+	}
+	printk(KERN_DEBUG "dwc_otg: FIQ %s\n", fiq_enable ? "enabled":"disabled");
+	printk(KERN_DEBUG "dwc_otg: NAK holdoff %s\n", nak_holdoff ? "enabled":"disabled");
+	printk(KERN_DEBUG "dwc_otg: FIQ split-transaction FSM %s\n", fiq_fsm_enable ? "enabled":"disabled");
+
+	error = driver_create_file(drv, &driver_attr_version);
+#ifdef DEBUG
+	error = driver_create_file(drv, &driver_attr_debuglevel);
+#endif
+	return retval;
+}
+
+module_init(dwc_otg_driver_init);
+
+/**
+ * This function is called when the driver is removed from the kernel
+ * with the rmmod command. The driver unregisters itself with its bus
+ * driver.
+ *
+ */
+static void __exit dwc_otg_driver_cleanup(void)
+{
+	printk(KERN_DEBUG "dwc_otg_driver_cleanup()\n");
+
+#ifdef LM_INTERFACE
+	driver_remove_file(&dwc_otg_driver.drv, &driver_attr_debuglevel);
+	driver_remove_file(&dwc_otg_driver.drv, &driver_attr_version);
+	lm_driver_unregister(&dwc_otg_driver);
+#elif defined(PCI_INTERFACE)
+	driver_remove_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
+	driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version);
+	pci_unregister_driver(&dwc_otg_driver);
+#elif defined(PLATFORM_INTERFACE)
+	driver_remove_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
+	driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version);
+	platform_driver_unregister(&dwc_otg_driver);
+#endif
+
+	printk(KERN_INFO "%s module removed\n", dwc_driver_name);
+}
+
+module_exit(dwc_otg_driver_cleanup);
+
+MODULE_DESCRIPTION(DWC_DRIVER_DESC);
+MODULE_AUTHOR("Synopsys Inc.");
+MODULE_LICENSE("GPL");
+
+module_param_named(otg_cap, dwc_otg_module_params.otg_cap, int, 0444);
+MODULE_PARM_DESC(otg_cap, "OTG Capabilities 0=HNP&SRP 1=SRP Only 2=None");
+module_param_named(opt, dwc_otg_module_params.opt, int, 0444);
+MODULE_PARM_DESC(opt, "OPT Mode");
+module_param_named(dma_enable, dwc_otg_module_params.dma_enable, int, 0444);
+MODULE_PARM_DESC(dma_enable, "DMA Mode 0=Slave 1=DMA enabled");
+
+module_param_named(dma_desc_enable, dwc_otg_module_params.dma_desc_enable, int,
+		   0444);
+MODULE_PARM_DESC(dma_desc_enable,
+		 "DMA Desc Mode 0=Address DMA 1=DMA Descriptor enabled");
+
+module_param_named(dma_burst_size, dwc_otg_module_params.dma_burst_size, int,
+		   0444);
+MODULE_PARM_DESC(dma_burst_size,
+		 "DMA Burst Size 1, 4, 8, 16, 32, 64, 128, 256");
+module_param_named(speed, dwc_otg_module_params.speed, int, 0444);
+MODULE_PARM_DESC(speed, "Speed 0=High Speed 1=Full Speed");
+module_param_named(host_support_fs_ls_low_power,
+		   dwc_otg_module_params.host_support_fs_ls_low_power, int,
+		   0444);
+MODULE_PARM_DESC(host_support_fs_ls_low_power,
+		 "Support Low Power w/FS or LS 0=Support 1=Don't Support");
+module_param_named(host_ls_low_power_phy_clk,
+		   dwc_otg_module_params.host_ls_low_power_phy_clk, int, 0444);
+MODULE_PARM_DESC(host_ls_low_power_phy_clk,
+		 "Low Speed Low Power Clock 0=48Mhz 1=6Mhz");
+module_param_named(enable_dynamic_fifo,
+		   dwc_otg_module_params.enable_dynamic_fifo, int, 0444);
+MODULE_PARM_DESC(enable_dynamic_fifo, "0=cC Setting 1=Allow Dynamic Sizing");
+module_param_named(data_fifo_size, dwc_otg_module_params.data_fifo_size, int,
+		   0444);
+MODULE_PARM_DESC(data_fifo_size,
+		 "Total number of words in the data FIFO memory 32-32768");
+module_param_named(dev_rx_fifo_size, dwc_otg_module_params.dev_rx_fifo_size,
+		   int, 0444);
+MODULE_PARM_DESC(dev_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(dev_nperio_tx_fifo_size,
+		   dwc_otg_module_params.dev_nperio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(dev_nperio_tx_fifo_size,
+		 "Number of words in the non-periodic Tx FIFO 16-32768");
+module_param_named(dev_perio_tx_fifo_size_1,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[0], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_1,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_2,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[1], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_2,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_3,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[2], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_3,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_4,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[3], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_4,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_5,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[4], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_5,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_6,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[5], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_6,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_7,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[6], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_7,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_8,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[7], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_8,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_9,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[8], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_9,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_10,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[9], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_10,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_11,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[10], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_11,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_12,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[11], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_12,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_13,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[12], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_13,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_14,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[13], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_14,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_15,
+		   dwc_otg_module_params.dev_perio_tx_fifo_size[14], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_15,
+		 "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(host_rx_fifo_size, dwc_otg_module_params.host_rx_fifo_size,
+		   int, 0444);
+MODULE_PARM_DESC(host_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(host_nperio_tx_fifo_size,
+		   dwc_otg_module_params.host_nperio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_nperio_tx_fifo_size,
+		 "Number of words in the non-periodic Tx FIFO 16-32768");
+module_param_named(host_perio_tx_fifo_size,
+		   dwc_otg_module_params.host_perio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_perio_tx_fifo_size,
+		 "Number of words in the host periodic Tx FIFO 16-32768");
+module_param_named(max_transfer_size, dwc_otg_module_params.max_transfer_size,
+		   int, 0444);
+/** @todo Set the max to 512K, modify checks */
+MODULE_PARM_DESC(max_transfer_size,
+		 "The maximum transfer size supported in bytes 2047-65535");
+module_param_named(max_packet_count, dwc_otg_module_params.max_packet_count,
+		   int, 0444);
+MODULE_PARM_DESC(max_packet_count,
+		 "The maximum number of packets in a transfer 15-511");
+module_param_named(host_channels, dwc_otg_module_params.host_channels, int,
+		   0444);
+MODULE_PARM_DESC(host_channels,
+		 "The number of host channel registers to use 1-16");
+module_param_named(dev_endpoints, dwc_otg_module_params.dev_endpoints, int,
+		   0444);
+MODULE_PARM_DESC(dev_endpoints,
+		 "The number of endpoints in addition to EP0 available for device mode 1-15");
+module_param_named(phy_type, dwc_otg_module_params.phy_type, int, 0444);
+MODULE_PARM_DESC(phy_type, "0=Reserved 1=UTMI+ 2=ULPI");
+module_param_named(phy_utmi_width, dwc_otg_module_params.phy_utmi_width, int,
+		   0444);
+MODULE_PARM_DESC(phy_utmi_width, "Specifies the UTMI+ Data Width 8 or 16 bits");
+module_param_named(phy_ulpi_ddr, dwc_otg_module_params.phy_ulpi_ddr, int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ddr,
+		 "ULPI at double or single data rate 0=Single 1=Double");
+module_param_named(phy_ulpi_ext_vbus, dwc_otg_module_params.phy_ulpi_ext_vbus,
+		   int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ext_vbus,
+		 "ULPI PHY using internal or external vbus 0=Internal");
+module_param_named(i2c_enable, dwc_otg_module_params.i2c_enable, int, 0444);
+MODULE_PARM_DESC(i2c_enable, "FS PHY Interface");
+module_param_named(ulpi_fs_ls, dwc_otg_module_params.ulpi_fs_ls, int, 0444);
+MODULE_PARM_DESC(ulpi_fs_ls, "ULPI PHY FS/LS mode only");
+module_param_named(ts_dline, dwc_otg_module_params.ts_dline, int, 0444);
+MODULE_PARM_DESC(ts_dline, "Term select Dline pulsing for all PHYs");
+module_param_named(debug, g_dbg_lvl, int, 0444);
+MODULE_PARM_DESC(debug, "");
+
+module_param_named(en_multiple_tx_fifo,
+		   dwc_otg_module_params.en_multiple_tx_fifo, int, 0444);
+MODULE_PARM_DESC(en_multiple_tx_fifo,
+		 "Dedicated Non Periodic Tx FIFOs 0=disabled 1=enabled");
+module_param_named(dev_tx_fifo_size_1,
+		   dwc_otg_module_params.dev_tx_fifo_size[0], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_1, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_2,
+		   dwc_otg_module_params.dev_tx_fifo_size[1], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_2, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_3,
+		   dwc_otg_module_params.dev_tx_fifo_size[2], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_3, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_4,
+		   dwc_otg_module_params.dev_tx_fifo_size[3], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_4, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_5,
+		   dwc_otg_module_params.dev_tx_fifo_size[4], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_5, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_6,
+		   dwc_otg_module_params.dev_tx_fifo_size[5], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_6, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_7,
+		   dwc_otg_module_params.dev_tx_fifo_size[6], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_7, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_8,
+		   dwc_otg_module_params.dev_tx_fifo_size[7], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_8, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_9,
+		   dwc_otg_module_params.dev_tx_fifo_size[8], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_9, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_10,
+		   dwc_otg_module_params.dev_tx_fifo_size[9], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_10, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_11,
+		   dwc_otg_module_params.dev_tx_fifo_size[10], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_11, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_12,
+		   dwc_otg_module_params.dev_tx_fifo_size[11], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_12, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_13,
+		   dwc_otg_module_params.dev_tx_fifo_size[12], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_13, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_14,
+		   dwc_otg_module_params.dev_tx_fifo_size[13], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_14, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_15,
+		   dwc_otg_module_params.dev_tx_fifo_size[14], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_15, "Number of words in the Tx FIFO 4-768");
+
+module_param_named(thr_ctl, dwc_otg_module_params.thr_ctl, int, 0444);
+MODULE_PARM_DESC(thr_ctl,
+		 "Thresholding enable flag bit 0 - non ISO Tx thr., 1 - ISO Tx thr., 2 - Rx thr.- bit 0=disabled 1=enabled");
+module_param_named(tx_thr_length, dwc_otg_module_params.tx_thr_length, int,
+		   0444);
+MODULE_PARM_DESC(tx_thr_length, "Tx Threshold length in 32 bit DWORDs");
+module_param_named(rx_thr_length, dwc_otg_module_params.rx_thr_length, int,
+		   0444);
+MODULE_PARM_DESC(rx_thr_length, "Rx Threshold length in 32 bit DWORDs");
+
+module_param_named(pti_enable, dwc_otg_module_params.pti_enable, int, 0444);
+module_param_named(mpi_enable, dwc_otg_module_params.mpi_enable, int, 0444);
+module_param_named(lpm_enable, dwc_otg_module_params.lpm_enable, int, 0444);
+MODULE_PARM_DESC(lpm_enable, "LPM Enable 0=LPM Disabled 1=LPM Enabled");
+module_param_named(ic_usb_cap, dwc_otg_module_params.ic_usb_cap, int, 0444);
+MODULE_PARM_DESC(ic_usb_cap,
+		 "IC_USB Capability 0=IC_USB Disabled 1=IC_USB Enabled");
+module_param_named(ahb_thr_ratio, dwc_otg_module_params.ahb_thr_ratio, int,
+		   0444);
+MODULE_PARM_DESC(ahb_thr_ratio, "AHB Threshold Ratio");
+module_param_named(power_down, dwc_otg_module_params.power_down, int, 0444);
+MODULE_PARM_DESC(power_down, "Power Down Mode");
+module_param_named(reload_ctl, dwc_otg_module_params.reload_ctl, int, 0444);
+MODULE_PARM_DESC(reload_ctl, "HFIR Reload Control");
+module_param_named(dev_out_nak, dwc_otg_module_params.dev_out_nak, int, 0444);
+MODULE_PARM_DESC(dev_out_nak, "Enable Device OUT NAK");
+module_param_named(cont_on_bna, dwc_otg_module_params.cont_on_bna, int, 0444);
+MODULE_PARM_DESC(cont_on_bna, "Enable Enable Continue on BNA");
+module_param_named(ahb_single, dwc_otg_module_params.ahb_single, int, 0444);
+MODULE_PARM_DESC(ahb_single, "Enable AHB Single Support");
+module_param_named(adp_enable, dwc_otg_module_params.adp_enable, int, 0444);
+MODULE_PARM_DESC(adp_enable, "ADP Enable 0=ADP Disabled 1=ADP Enabled");
+module_param_named(otg_ver, dwc_otg_module_params.otg_ver, int, 0444);
+MODULE_PARM_DESC(otg_ver, "OTG revision supported 0=OTG 1.3 1=OTG 2.0");
+module_param(microframe_schedule, bool, 0444);
+MODULE_PARM_DESC(microframe_schedule, "Enable the microframe scheduler");
+
+module_param(fiq_enable, bool, 0444);
+MODULE_PARM_DESC(fiq_enable, "Enable the FIQ");
+module_param(nak_holdoff, ushort, 0644);
+MODULE_PARM_DESC(nak_holdoff, "Throttle duration for bulk split-transaction endpoints on a NAK. Default 8");
+module_param(fiq_fsm_enable, bool, 0444);
+MODULE_PARM_DESC(fiq_fsm_enable, "Enable the FIQ to perform split transactions as defined by fiq_fsm_mask");
+module_param(fiq_fsm_mask, ushort, 0444);
+MODULE_PARM_DESC(fiq_fsm_mask, "Bitmask of transactions to perform in the FIQ.\n"
+					"Bit 0 : Non-periodic split transactions\n"
+					"Bit 1 : Periodic split transactions\n"
+					"Bit 2 : High-speed multi-transfer isochronous\n"
+					"All other bits should be set 0.");
+
+
+/** @page "Module Parameters"
+ *
+ * The following parameters may be specified when starting the module.
+ * These parameters define how the DWC_otg controller should be
+ * configured. Parameter values are passed to the CIL initialization
+ * function dwc_otg_cil_init
+ *
+ * Example: <code>modprobe dwc_otg speed=1 otg_cap=1</code>
+ *
+
+ <table>
+ <tr><td>Parameter Name</td><td>Meaning</td></tr>
+
+ <tr>
+ <td>otg_cap</td>
+ <td>Specifies the OTG capabilities. The driver will automatically detect the
+ value for this parameter if none is specified.
+ - 0: HNP and SRP capable (default, if available)
+ - 1: SRP Only capable
+ - 2: No HNP/SRP capable
+ </td></tr>
+
+ <tr>
+ <td>dma_enable</td>
+ <td>Specifies whether to use slave or DMA mode for accessing the data FIFOs.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Slave
+ - 1: DMA (default, if available)
+ </td></tr>
+
+ <tr>
+ <td>dma_burst_size</td>
+ <td>The DMA Burst size (applicable only for External DMA Mode).
+ - Values: 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+ </td></tr>
+
+ <tr>
+ <td>speed</td>
+ <td>Specifies the maximum speed of operation in host and device mode. The
+ actual speed depends on the speed of the attached device and the value of
+ phy_type.
+ - 0: High Speed (default)
+ - 1: Full Speed
+ </td></tr>
+
+ <tr>
+ <td>host_support_fs_ls_low_power</td>
+ <td>Specifies whether low power mode is supported when attached to a Full
+ Speed or Low Speed device in host mode.
+ - 0: Don't support low power mode (default)
+ - 1: Support low power mode
+ </td></tr>
+
+ <tr>
+ <td>host_ls_low_power_phy_clk</td>
+ <td>Specifies the PHY clock rate in low power mode when connected to a Low
+ Speed device in host mode. This parameter is applicable only if
+ HOST_SUPPORT_FS_LS_LOW_POWER is enabled.
+ - 0: 48 MHz (default)
+ - 1: 6 MHz
+ </td></tr>
+
+ <tr>
+ <td>enable_dynamic_fifo</td>
+ <td> Specifies whether FIFOs may be resized by the driver software.
+ - 0: Use cC FIFO size parameters
+ - 1: Allow dynamic FIFO sizing (default)
+ </td></tr>
+
+ <tr>
+ <td>data_fifo_size</td>
+ <td>Total number of 4-byte words in the data FIFO memory. This memory
+ includes the Rx FIFO, non-periodic Tx FIFO, and periodic Tx FIFOs.
+ - Values: 32 to 32768 (default 8192)
+
+ Note: The total FIFO memory depth in the FPGA configuration is 8192.
+ </td></tr>
+
+ <tr>
+ <td>dev_rx_fifo_size</td>
+ <td>Number of 4-byte words in the Rx FIFO in device mode when dynamic
+ FIFO sizing is enabled.
+ - Values: 16 to 32768 (default 1064)
+ </td></tr>
+
+ <tr>
+ <td>dev_nperio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the non-periodic Tx FIFO in device mode when
+ dynamic FIFO sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>dev_perio_tx_fifo_size_n (n = 1 to 15)</td>
+ <td>Number of 4-byte words in each of the periodic Tx FIFOs in device mode
+ when dynamic FIFO sizing is enabled.
+ - Values: 4 to 768 (default 256)
+ </td></tr>
+
+ <tr>
+ <td>host_rx_fifo_size</td>
+ <td>Number of 4-byte words in the Rx FIFO in host mode when dynamic FIFO
+ sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>host_nperio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the non-periodic Tx FIFO in host mode when
+ dynamic FIFO sizing is enabled in the core.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>host_perio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the host periodic Tx FIFO when dynamic FIFO
+ sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>max_transfer_size</td>
+ <td>The maximum transfer size supported in bytes.
+ - Values: 2047 to 65,535 (default 65,535)
+ </td></tr>
+
+ <tr>
+ <td>max_packet_count</td>
+ <td>The maximum number of packets in a transfer.
+ - Values: 15 to 511 (default 511)
+ </td></tr>
+
+ <tr>
+ <td>host_channels</td>
+ <td>The number of host channel registers to use.
+ - Values: 1 to 16 (default 12)
+
+ Note: The FPGA configuration supports a maximum of 12 host channels.
+ </td></tr>
+
+ <tr>
+ <td>dev_endpoints</td>
+ <td>The number of endpoints in addition to EP0 available for device mode
+ operations.
+ - Values: 1 to 15 (default 6 IN and OUT)
+
+ Note: The FPGA configuration supports a maximum of 6 IN and OUT endpoints in
+ addition to EP0.
+ </td></tr>
+
+ <tr>
+ <td>phy_type</td>
+ <td>Specifies the type of PHY interface to use. By default, the driver will
+ automatically detect the phy_type.
+ - 0: Full Speed
+ - 1: UTMI+ (default, if available)
+ - 2: ULPI
+ </td></tr>
+
+ <tr>
+ <td>phy_utmi_width</td>
+ <td>Specifies the UTMI+ Data Width. This parameter is applicable for a
+ phy_type of UTMI+. Also, this parameter is applicable only if the
+ OTG_HSPHY_WIDTH cC parameter was set to "8 and 16 bits", meaning that the
+ core has been configured to work at either data path width.
+ - Values: 8 or 16 bits (default 16)
+ </td></tr>
+
+ <tr>
+ <td>phy_ulpi_ddr</td>
+ <td>Specifies whether the ULPI operates at double or single data rate. This
+ parameter is only applicable if phy_type is ULPI.
+ - 0: single data rate ULPI interface with 8 bit wide data bus (default)
+ - 1: double data rate ULPI interface with 4 bit wide data bus
+ </td></tr>
+
+ <tr>
+ <td>i2c_enable</td>
+ <td>Specifies whether to use the I2C interface for full speed PHY. This
+ parameter is only applicable if PHY_TYPE is FS.
+ - 0: Disabled (default)
+ - 1: Enabled
+ </td></tr>
+
+ <tr>
+ <td>ulpi_fs_ls</td>
+ <td>Specifies whether to use ULPI FS/LS mode only.
+ - 0: Disabled (default)
+ - 1: Enabled
+ </td></tr>
+
+ <tr>
+ <td>ts_dline</td>
+ <td>Specifies whether term select D-Line pulsing for all PHYs is enabled.
+ - 0: Disabled (default)
+ - 1: Enabled
+ </td></tr>
+
+ <tr>
+ <td>en_multiple_tx_fifo</td>
+ <td>Specifies whether dedicatedto tx fifos are enabled for non periodic IN EPs.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Disabled
+ - 1: Enabled (default, if available)
+ </td></tr>
+
+ <tr>
+ <td>dev_tx_fifo_size_n (n = 1 to 15)</td>
+ <td>Number of 4-byte words in each of the Tx FIFOs in device mode
+ when dynamic FIFO sizing is enabled.
+ - Values: 4 to 768 (default 256)
+ </td></tr>
+
+ <tr>
+ <td>tx_thr_length</td>
+ <td>Transmit Threshold length in 32 bit double words
+ - Values: 8 to 128 (default 64)
+ </td></tr>
+
+ <tr>
+ <td>rx_thr_length</td>
+ <td>Receive Threshold length in 32 bit double words
+ - Values: 8 to 128 (default 64)
+ </td></tr>
+
+<tr>
+ <td>thr_ctl</td>
+ <td>Specifies whether to enable Thresholding for Device mode. Bits 0, 1, 2 of
+ this parmater specifies if thresholding is enabled for non-Iso Tx, Iso Tx and
+ Rx transfers accordingly.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - Values: 0 to 7 (default 0)
+ Bit values indicate:
+ - 0: Thresholding disabled
+ - 1: Thresholding enabled
+ </td></tr>
+
+<tr>
+ <td>dma_desc_enable</td>
+ <td>Specifies whether to enable Descriptor DMA mode.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Descriptor DMA disabled
+ - 1: Descriptor DMA (default, if available)
+ </td></tr>
+
+<tr>
+ <td>mpi_enable</td>
+ <td>Specifies whether to enable MPI enhancement mode.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: MPI disabled (default)
+ - 1: MPI enable
+ </td></tr>
+
+<tr>
+ <td>pti_enable</td>
+ <td>Specifies whether to enable PTI enhancement support.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: PTI disabled (default)
+ - 1: PTI enable
+ </td></tr>
+
+<tr>
+ <td>lpm_enable</td>
+ <td>Specifies whether to enable LPM support.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: LPM disabled
+ - 1: LPM enable (default, if available)
+ </td></tr>
+
+<tr>
+ <td>ic_usb_cap</td>
+ <td>Specifies whether to enable IC_USB capability.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: IC_USB disabled (default, if available)
+ - 1: IC_USB enable
+ </td></tr>
+
+<tr>
+ <td>ahb_thr_ratio</td>
+ <td>Specifies AHB Threshold ratio.
+ - Values: 0 to 3 (default 0)
+ </td></tr>
+
+<tr>
+ <td>power_down</td>
+ <td>Specifies Power Down(Hibernation) Mode.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Power Down disabled (default)
+ - 2: Power Down enabled
+ </td></tr>
+
+ <tr>
+ <td>reload_ctl</td>
+ <td>Specifies whether dynamic reloading of the HFIR register is allowed during
+ run time. The driver will automatically detect the value for this parameter if
+ none is specified. In case the HFIR value is reloaded when HFIR.RldCtrl == 1'b0
+ the core might misbehave.
+ - 0: Reload Control disabled (default)
+ - 1: Reload Control enabled
+ </td></tr>
+
+ <tr>
+ <td>dev_out_nak</td>
+ <td>Specifies whether  Device OUT NAK enhancement enabled or no.
+ The driver will automatically detect the value for this parameter if
+ none is specified. This parameter is valid only when OTG_EN_DESC_DMA == 1b1.
+ - 0: The core does not set NAK after Bulk OUT transfer complete (default)
+ - 1: The core sets NAK after Bulk OUT transfer complete
+ </td></tr>
+
+ <tr>
+ <td>cont_on_bna</td>
+ <td>Specifies whether Enable Continue on BNA enabled or no.
+ After receiving BNA interrupt the core disables the endpoint,when the
+ endpoint is re-enabled by the application the
+ - 0: Core starts processing from the DOEPDMA descriptor (default)
+ - 1: Core starts processing from the descriptor which received the BNA.
+ This parameter is valid only when OTG_EN_DESC_DMA == 1b1.
+ </td></tr>
+
+ <tr>
+ <td>ahb_single</td>
+ <td>This bit when programmed supports SINGLE transfers for remainder data
+ in a transfer for DMA mode of operation.
+ - 0: The remainder data will be sent using INCR burst size (default)
+ - 1: The remainder data will be sent using SINGLE burst size.
+ </td></tr>
+
+<tr>
+ <td>adp_enable</td>
+ <td>Specifies whether ADP feature is enabled.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: ADP feature disabled (default)
+ - 1: ADP feature enabled
+ </td></tr>
+
+  <tr>
+ <td>otg_ver</td>
+ <td>Specifies whether OTG is performing as USB OTG Revision 2.0 or Revision 1.3
+ USB OTG device.
+ - 0: OTG 2.0 support disabled (default)
+ - 1: OTG 2.0 support enabled
+ </td></tr>
+
+*/
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_driver.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_driver.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_driver.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_driver.h	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,86 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_driver.h $
+ * $Revision: #19 $
+ * $Date: 2010/11/15 $
+ * $Change: 1627671 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_DRIVER_H__
+#define __DWC_OTG_DRIVER_H__
+
+/** @file
+ * This file contains the interface to the Linux driver.
+ */
+#include "dwc_otg_os_dep.h"
+#include "dwc_otg_core_if.h"
+
+/* Type declarations */
+struct dwc_otg_pcd;
+struct dwc_otg_hcd;
+
+/**
+ * This structure is a wrapper that encapsulates the driver components used to
+ * manage a single DWC_otg controller.
+ */
+typedef struct dwc_otg_device {
+	/** Structure containing OS-dependent stuff. KEEP THIS STRUCT AT THE
+	 * VERY BEGINNING OF THE DEVICE STRUCT. OSes such as FreeBSD and NetBSD
+	 * require this. */
+	struct os_dependent os_dep;
+
+	/** Pointer to the core interface structure. */
+	dwc_otg_core_if_t *core_if;
+
+	/** Pointer to the PCD structure. */
+	struct dwc_otg_pcd *pcd;
+
+	/** Pointer to the HCD structure. */
+	struct dwc_otg_hcd *hcd;
+
+	/** Flag to indicate whether the common IRQ handler is installed. */
+	uint8_t common_irq_installed;
+
+} dwc_otg_device_t;
+
+/*We must clear S3C24XX_EINTPEND external interrupt register
+ * because after clearing in this register trigerred IRQ from
+ * H/W core in kernel interrupt can be occured again before OTG
+ * handlers clear all IRQ sources of Core registers because of
+ * timing latencies and Low Level IRQ Type.
+ */
+#ifdef CONFIG_MACH_IPMATE
+#define  S3C2410X_CLEAR_EINTPEND()   \
+do { \
+	__raw_writel(1UL << 11,S3C24XX_EINTPEND); \
+} while (0)
+#else
+#define  S3C2410X_CLEAR_EINTPEND()   do { } while (0)
+#endif
+
+#endif
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,1346 @@
+/*
+ * dwc_otg_fiq_fsm.c - The finite state machine FIQ
+ *
+ * Copyright (c) 2013 Raspberry Pi Foundation
+ *
+ * Author: Jonathan Bell <jonathan@raspberrypi.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *	* Redistributions of source code must retain the above copyright
+ *	  notice, this list of conditions and the following disclaimer.
+ *	* Redistributions in binary form must reproduce the above copyright
+ *	  notice, this list of conditions and the following disclaimer in the
+ *	  documentation and/or other materials provided with the distribution.
+ *	* Neither the name of Raspberry Pi nor the
+ *	  names of its contributors may be used to endorse or promote products
+ *	  derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This FIQ implements functionality that performs split transactions on
+ * the dwc_otg hardware without any outside intervention. A split transaction
+ * is "queued" by nominating a specific host channel to perform the entirety
+ * of a split transaction. This FIQ will then perform the microframe-precise
+ * scheduling required in each phase of the transaction until completion.
+ *
+ * The FIQ functionality is glued into the Synopsys driver via the entry point
+ * in the FSM enqueue function, and at the exit point in handling a HC interrupt
+ * for a FSM-enabled channel.
+ *
+ * NB: Large parts of this implementation have architecture-specific code.
+ * For porting this functionality to other ARM machines, the minimum is required:
+ * - An interrupt controller allowing the top-level dwc USB interrupt to be routed
+ *   to the FIQ
+ * - A method of forcing a software generated interrupt from FIQ mode that then
+ *   triggers an IRQ entry (with the dwc USB handler called by this IRQ number)
+ * - Guaranteed interrupt routing such that both the FIQ and SGI occur on the same
+ *   processor core - there is no locking between the FIQ and IRQ (aside from
+ *   local_fiq_disable)
+ *
+ */
+
+#include "dwc_otg_fiq_fsm.h"
+
+
+char buffer[1000*16];
+int wptr;
+void notrace _fiq_print(enum fiq_debug_level dbg_lvl, volatile struct fiq_state *state, char *fmt, ...)
+{
+	enum fiq_debug_level dbg_lvl_req = FIQDBG_ERR;
+	va_list args;
+	char text[17];
+	hfnum_data_t hfnum = { .d32 = FIQ_READ(state->dwc_regs_base + 0x408) };
+
+	if((dbg_lvl & dbg_lvl_req) || dbg_lvl == FIQDBG_ERR)
+	{
+		snprintf(text, 9, " %4d:%1u  ", hfnum.b.frnum/8, hfnum.b.frnum & 7);
+		va_start(args, fmt);
+		vsnprintf(text+8, 9, fmt, args);
+		va_end(args);
+
+		memcpy(buffer + wptr, text, 16);
+		wptr = (wptr + 16) % sizeof(buffer);
+	}
+}
+
+/**
+ * fiq_fsm_spin_lock() - ARMv6+ bare bones spinlock
+ * Must be called with local interrupts and FIQ disabled.
+ */
+#ifdef CONFIG_ARCH_BCM2709
+inline void fiq_fsm_spin_lock(fiq_lock_t *lock)
+{
+	unsigned long tmp;
+	uint32_t newval;
+	fiq_lock_t lockval;
+	smp_mb__before_spinlock();
+	/* Nested locking, yay. If we are on the same CPU as the fiq, then the disable
+	 * will be sufficient. If we are on a different CPU, then the lock protects us. */
+	prefetchw(&lock->slock);
+	asm volatile (
+	"1:     ldrex   %0, [%3]\n"
+	"       add     %1, %0, %4\n"
+	"       strex   %2, %1, [%3]\n"
+	"       teq     %2, #0\n"
+	"       bne     1b"
+	: "=&r" (lockval), "=&r" (newval), "=&r" (tmp)
+	: "r" (&lock->slock), "I" (1 << 16)
+	: "cc");
+
+	while (lockval.tickets.next != lockval.tickets.owner) {
+		wfe();
+		lockval.tickets.owner = ACCESS_ONCE(lock->tickets.owner);
+	}
+	smp_mb();
+}
+#else
+inline void fiq_fsm_spin_lock(fiq_lock_t *lock) { }
+#endif
+
+/**
+ * fiq_fsm_spin_unlock() - ARMv6+ bare bones spinunlock
+ */
+#ifdef CONFIG_ARCH_BCM2709
+inline void fiq_fsm_spin_unlock(fiq_lock_t *lock)
+{
+	smp_mb();
+	lock->tickets.owner++;
+	dsb_sev();
+}
+#else
+inline void fiq_fsm_spin_unlock(fiq_lock_t *lock) { }
+#endif
+
+/**
+ * fiq_fsm_restart_channel() - Poke channel enable bit for a split transaction
+ * @channel: channel to re-enable
+ */
+static void fiq_fsm_restart_channel(struct fiq_state *st, int n, int force)
+{
+	hcchar_data_t hcchar = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR) };
+	
+	hcchar.b.chen = 0;
+	if (st->channel[n].hcchar_copy.b.eptype & 0x1) {
+		hfnum_data_t hfnum = { .d32 = FIQ_READ(st->dwc_regs_base + HFNUM) };
+		/* Hardware bug workaround: update the ssplit index */
+		if (st->channel[n].hcsplt_copy.b.spltena)
+			st->channel[n].expected_uframe = (hfnum.b.frnum + 1) & 0x3FFF;
+		
+		hcchar.b.oddfrm = (hfnum.b.frnum & 0x1) ? 0	: 1;
+	}
+	
+	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR, hcchar.d32);
+	hcchar.d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
+	hcchar.b.chen = 1;
+
+	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR, hcchar.d32);
+	fiq_print(FIQDBG_INT, st, "HCGO %01d %01d", n, force);
+}
+
+/**
+ * fiq_fsm_setup_csplit() - Prepare a host channel for a CSplit transaction stage
+ * @st: Pointer to the channel's state
+ * @n : channel number
+ *
+ * Change host channel registers to perform a complete-split transaction. Being mindful of the
+ * endpoint direction, set control regs up correctly.
+ */
+static void notrace fiq_fsm_setup_csplit(struct fiq_state *st, int n)
+{
+	hcsplt_data_t hcsplt = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCSPLT) };
+	hctsiz_data_t hctsiz = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ) };
+	
+	hcsplt.b.compsplt = 1;
+	if (st->channel[n].hcchar_copy.b.epdir == 1) {
+		// If IN, the CSPLIT result contains the data or a hub handshake. hctsiz = maxpacket.
+		hctsiz.b.xfersize = st->channel[n].hctsiz_copy.b.xfersize;
+	} else {
+		// If OUT, the CSPLIT result contains handshake only.
+		hctsiz.b.xfersize = 0;
+	}
+	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCSPLT, hcsplt.d32);
+	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ, hctsiz.d32);
+	mb();
+}
+
+static inline int notrace fiq_get_xfer_len(struct fiq_state *st, int n)
+{
+	/* The xfersize register is a bit wonky. For IN transfers, it decrements by the packet size. */
+	hctsiz_data_t hctsiz = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ) };
+	
+	if (st->channel[n].hcchar_copy.b.epdir == 0) {
+		return st->channel[n].hctsiz_copy.b.xfersize;
+	} else {
+		return st->channel[n].hctsiz_copy.b.xfersize - hctsiz.b.xfersize;
+	}
+
+}
+
+
+/**
+ * fiq_increment_dma_buf() - update DMA address for bounce buffers after a CSPLIT
+ *
+ * Of use only for IN periodic transfers.
+ */
+static int notrace fiq_increment_dma_buf(struct fiq_state *st, int num_channels, int n)
+{
+	hcdma_data_t hcdma;
+	int i = st->channel[n].dma_info.index;
+	int len;
+	struct fiq_dma_blob *blob = (struct fiq_dma_blob *) st->dma_base;
+
+	len = fiq_get_xfer_len(st, n);
+	fiq_print(FIQDBG_INT, st, "LEN: %03d", len);
+	st->channel[n].dma_info.slot_len[i] = len;
+	i++;
+	if (i > 6)
+		BUG();
+
+	hcdma.d32 = (dma_addr_t) &blob->channel[n].index[i].buf[0];
+	FIQ_WRITE(st->dwc_regs_base + HC_DMA + (HC_OFFSET * n), hcdma.d32);
+	st->channel[n].dma_info.index = i;
+	return 0;
+}
+
+/**
+ * fiq_reload_hctsiz() - for IN transactions, reset HCTSIZ
+ */
+static void notrace fiq_fsm_reload_hctsiz(struct fiq_state *st, int n)
+{
+	hctsiz_data_t hctsiz = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ) };
+	hctsiz.b.xfersize = st->channel[n].hctsiz_copy.b.xfersize;
+	hctsiz.b.pktcnt = 1;
+	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ, hctsiz.d32);
+}
+
+/**
+ * fiq_iso_out_advance() - update DMA address and split position bits
+ * for isochronous OUT transactions.
+ *
+ * Returns 1 if this is the last packet queued, 0 otherwise. Split-ALL and
+ * Split-BEGIN states are not handled - this is done when the transaction was queued.
+ *
+ * This function must only be called from the FIQ_ISO_OUT_ACTIVE state.
+ */
+static int notrace fiq_iso_out_advance(struct fiq_state *st, int num_channels, int n)
+{
+	hcsplt_data_t hcsplt;
+	hctsiz_data_t hctsiz;
+	hcdma_data_t hcdma;
+	struct fiq_dma_blob *blob = (struct fiq_dma_blob *) st->dma_base;
+	int last = 0;
+	int i = st->channel[n].dma_info.index;
+	
+	fiq_print(FIQDBG_INT, st, "ADV %01d %01d ", n, i);
+	i++;
+	if (i == 4)
+		last = 1;
+	if (st->channel[n].dma_info.slot_len[i+1] == 255)
+		last = 1;
+
+	/* New DMA address - address of bounce buffer referred to in index */
+	hcdma.d32 = (uint32_t) &blob->channel[n].index[i].buf[0];
+	//hcdma.d32 = FIQ_READ(st->dwc_regs_base + HC_DMA + (HC_OFFSET * n));
+	//hcdma.d32 += st->channel[n].dma_info.slot_len[i];
+	fiq_print(FIQDBG_INT, st, "LAST: %01d ", last);
+	fiq_print(FIQDBG_INT, st, "LEN: %03d", st->channel[n].dma_info.slot_len[i]);
+	hcsplt.d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCSPLT);
+	hctsiz.d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ);
+	hcsplt.b.xactpos = (last) ? ISOC_XACTPOS_END : ISOC_XACTPOS_MID;
+	/* Set up new packet length */
+	hctsiz.b.pktcnt = 1;
+	hctsiz.b.xfersize = st->channel[n].dma_info.slot_len[i];
+	fiq_print(FIQDBG_INT, st, "%08x", hctsiz.d32);
+	
+	st->channel[n].dma_info.index++;
+	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCSPLT, hcsplt.d32);
+	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ, hctsiz.d32);
+	FIQ_WRITE(st->dwc_regs_base + HC_DMA + (HC_OFFSET * n), hcdma.d32);
+	return last;
+}
+
+/**
+ * fiq_fsm_tt_next_isoc() - queue next pending isochronous out start-split on a TT
+ * 
+ * Despite the limitations of the DWC core, we can force a microframe pipeline of
+ * isochronous OUT start-split transactions while waiting for a corresponding other-type
+ * of endpoint to finish its CSPLITs. TTs have big periodic buffers therefore it
+ * is very unlikely that filling the start-split FIFO will cause data loss.
+ * This allows much better interleaving of transactions in an order-independent way-
+ * there is no requirement to prioritise isochronous, just a state-space search has
+ * to be performed on each periodic start-split complete interrupt.
+ */
+static int notrace fiq_fsm_tt_next_isoc(struct fiq_state *st, int num_channels, int n)
+{
+	int hub_addr = st->channel[n].hub_addr;
+	int port_addr = st->channel[n].port_addr;
+	int i, poked = 0;
+	for (i = 0; i < num_channels; i++) {
+		if (i == n || st->channel[i].fsm == FIQ_PASSTHROUGH)
+			continue;
+		if (st->channel[i].hub_addr == hub_addr &&
+			st->channel[i].port_addr == port_addr) {
+			switch (st->channel[i].fsm) {
+			case FIQ_PER_ISO_OUT_PENDING:
+				if (st->channel[i].nrpackets == 1) {
+					st->channel[i].fsm = FIQ_PER_ISO_OUT_LAST;
+				} else {
+					st->channel[i].fsm = FIQ_PER_ISO_OUT_ACTIVE;
+				}
+				fiq_fsm_restart_channel(st, i, 0);
+				poked = 1;
+				break;
+
+			default:
+				break;
+			}
+		}
+		if (poked)
+			break;
+	}
+	return poked;
+}
+
+/**
+ * fiq_fsm_tt_in_use() - search for host channels using this TT
+ * @n: Channel to use as reference
+ *
+ */
+int notrace noinline fiq_fsm_tt_in_use(struct fiq_state *st, int num_channels, int n)
+{
+	int hub_addr = st->channel[n].hub_addr;
+	int port_addr = st->channel[n].port_addr;
+	int i, in_use = 0;
+	for (i = 0; i < num_channels; i++) {
+		if (i == n || st->channel[i].fsm == FIQ_PASSTHROUGH)
+			continue;
+		switch (st->channel[i].fsm) {
+		/* TT is reserved for channels that are in the middle of a periodic
+		 * split transaction.
+		 */
+		case FIQ_PER_SSPLIT_STARTED:
+		case FIQ_PER_CSPLIT_WAIT:
+		case FIQ_PER_CSPLIT_NYET1:
+		//case FIQ_PER_CSPLIT_POLL:
+		case FIQ_PER_ISO_OUT_ACTIVE:
+		case FIQ_PER_ISO_OUT_LAST:
+			if (st->channel[i].hub_addr == hub_addr &&
+				st->channel[i].port_addr == port_addr) {
+				in_use = 1;
+			}
+			break;
+		default:
+			break;
+		}
+		if (in_use)
+			break;
+	}
+	return in_use;
+}
+
+/**
+ * fiq_fsm_more_csplits() - determine whether additional CSPLITs need
+ * 			to be issued for this IN transaction.
+ *
+ * We cannot tell the inbound PID of a data packet due to hardware limitations.
+ * we need to make an educated guess as to whether we need to queue another CSPLIT
+ * or not. A no-brainer is when we have received enough data to fill the endpoint
+ * size, but for endpoints that give variable-length data then we have to resort
+ * to heuristics.
+ *
+ * We also return whether this is the last CSPLIT to be queued, again based on
+ * heuristics. This is to allow a 1-uframe overlap of periodic split transactions.
+ * Note: requires at least 1 CSPLIT to have been performed prior to being called.
+ */
+
+/*
+ * We need some way of guaranteeing if a returned periodic packet of size X
+ * has a DATA0 PID.
+ * The heuristic value of 144 bytes assumes that the received data has maximal
+ * bit-stuffing and the clock frequency of the transmitting device is at the lowest
+ * permissible limit. If the transfer length results in a final packet size
+ * 144 < p <= 188, then an erroneous CSPLIT will be issued.
+ * Also used to ensure that an endpoint will nominally only return a single
+ * complete-split worth of data.
+ */
+#define DATA0_PID_HEURISTIC 144
+
+static int notrace noinline fiq_fsm_more_csplits(struct fiq_state *state, int n, int *probably_last)
+{
+
+	int i;
+	int total_len = 0;
+	int more_needed = 1;
+	struct fiq_channel_state *st = &state->channel[n];
+
+	for (i = 0; i < st->dma_info.index; i++) {
+			total_len += st->dma_info.slot_len[i];
+	}
+
+	*probably_last = 0;
+
+	if (st->hcchar_copy.b.eptype == 0x3) {
+		/*
+		 * An interrupt endpoint will take max 2 CSPLITs. if we are receiving data
+		 * then this is definitely the last CSPLIT.
+		 */
+		*probably_last = 1;
+	} else {
+		/* Isoc IN. This is a bit risky if we are the first transaction:
+		 * we may have been held off slightly. */
+		if (i > 1 && st->dma_info.slot_len[st->dma_info.index-1] <= DATA0_PID_HEURISTIC) {
+			more_needed = 0;
+		}
+		/* If in the next uframe we will receive enough data to fill the endpoint,
+		 * then only issue 1 more csplit.
+		 */
+		if (st->hctsiz_copy.b.xfersize - total_len <= DATA0_PID_HEURISTIC)
+			*probably_last = 1;
+	}
+
+	if (total_len >= st->hctsiz_copy.b.xfersize || 
+		i == 6 || total_len == 0)
+		/* Note: due to bit stuffing it is possible to have > 6 CSPLITs for
+		 * a single endpoint. Accepting more would completely break our scheduling mechanism though
+		 * - in these extreme cases we will pass through a truncated packet.
+		 */
+		more_needed = 0;	
+	
+	return more_needed;
+}
+
+/**
+ * fiq_fsm_too_late() - Test transaction for lateness
+ * 
+ * If a SSPLIT for a large IN transaction is issued too late in a frame,
+ * the hub will disable the port to the device and respond with ERR handshakes.
+ * The hub status endpoint will not reflect this change.
+ * Returns 1 if we will issue a SSPLIT that will result in a device babble.
+ */
+int notrace fiq_fsm_too_late(struct fiq_state *st, int n)
+{
+	int uframe;
+	hfnum_data_t hfnum = { .d32 = FIQ_READ(st->dwc_regs_base + HFNUM) };
+	uframe = hfnum.b.frnum & 0x7;
+	if ((uframe < 6) && (st->channel[n].nrpackets + 1 + uframe > 7)) {
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+
+/**
+ * fiq_fsm_start_next_periodic() - A half-arsed attempt at a microframe pipeline
+ *
+ * Search pending transactions in the start-split pending state and queue them.
+ * Don't queue packets in uframe .5 (comes out in .6) (USB2.0 11.18.4).
+ * Note: we specifically don't do isochronous OUT transactions first because better
+ * use of the TT's start-split fifo can be achieved by pipelining an IN before an OUT.
+ */
+static void notrace noinline fiq_fsm_start_next_periodic(struct fiq_state *st, int num_channels)
+{
+	int n;
+	hfnum_data_t hfnum = { .d32 = FIQ_READ(st->dwc_regs_base + HFNUM) };
+	if ((hfnum.b.frnum & 0x7) == 5)
+		return;
+	for (n = 0; n < num_channels; n++) {
+		if (st->channel[n].fsm == FIQ_PER_SSPLIT_QUEUED) {
+			/* Check to see if any other transactions are using this TT */
+			if(!fiq_fsm_tt_in_use(st, num_channels, n)) {
+				if (!fiq_fsm_too_late(st, n)) {
+					st->channel[n].fsm = FIQ_PER_SSPLIT_STARTED;
+					fiq_print(FIQDBG_INT, st, "NEXTPER ");
+					fiq_fsm_restart_channel(st, n, 0);
+				} else {
+					st->channel[n].fsm = FIQ_PER_SPLIT_TIMEOUT;
+				}
+				break;
+			}
+		}
+	}
+	for (n = 0; n < num_channels; n++) {
+		if (st->channel[n].fsm == FIQ_PER_ISO_OUT_PENDING) {
+			if (!fiq_fsm_tt_in_use(st, num_channels, n)) {
+				fiq_print(FIQDBG_INT, st, "NEXTISO ");	
+				st->channel[n].fsm = FIQ_PER_ISO_OUT_ACTIVE;
+				fiq_fsm_restart_channel(st, n, 0);
+				break;
+			}
+		}
+	}
+}
+
+/**
+ * fiq_fsm_update_hs_isoc() - update isochronous frame and transfer data
+ * @state:	Pointer to fiq_state
+ * @n:		Channel transaction is active on
+ * @hcint:	Copy of host channel interrupt register
+ *
+ * Returns 0 if there are no more transactions for this HC to do, 1
+ * otherwise.
+ */
+static int notrace noinline fiq_fsm_update_hs_isoc(struct fiq_state *state, int n, hcint_data_t hcint)
+{
+	struct fiq_channel_state *st = &state->channel[n];
+	int xfer_len = 0, nrpackets = 0;
+	hcdma_data_t hcdma;
+	fiq_print(FIQDBG_INT, state, "HSISO %02d", n);
+
+	xfer_len = fiq_get_xfer_len(state, n);
+	st->hs_isoc_info.iso_desc[st->hs_isoc_info.index].actual_length = xfer_len;
+
+	st->hs_isoc_info.iso_desc[st->hs_isoc_info.index].status = hcint.d32;
+
+	st->hs_isoc_info.index++;
+	if (st->hs_isoc_info.index == st->hs_isoc_info.nrframes) {
+		return 0;
+	}
+
+	/* grab the next DMA address offset from the array */
+	hcdma.d32 = st->hcdma_copy.d32 + st->hs_isoc_info.iso_desc[st->hs_isoc_info.index].offset;
+	FIQ_WRITE(state->dwc_regs_base + HC_DMA + (HC_OFFSET * n), hcdma.d32);
+
+	/* We need to set multi_count. This is a bit tricky - has to be set per-transaction as
+	 * the core needs to be told to send the correct number. Caution: for IN transfers,
+	 * this is always set to the maximum size of the endpoint. */
+	xfer_len = st->hs_isoc_info.iso_desc[st->hs_isoc_info.index].length;
+	/* Integer divide in a FIQ: fun. FIXME: make this not suck */
+	nrpackets = (xfer_len + st->hcchar_copy.b.mps - 1) / st->hcchar_copy.b.mps;
+	if (nrpackets == 0)
+		nrpackets = 1;
+	st->hcchar_copy.b.multicnt = nrpackets;
+	st->hctsiz_copy.b.pktcnt = nrpackets;
+
+	/* Initial PID also needs to be set */
+	if (st->hcchar_copy.b.epdir == 0) {
+		st->hctsiz_copy.b.xfersize = xfer_len;
+		switch (st->hcchar_copy.b.multicnt) {
+		case 1:
+			st->hctsiz_copy.b.pid = DWC_PID_DATA0;
+			break;
+		case 2:
+		case 3:
+			st->hctsiz_copy.b.pid = DWC_PID_MDATA;
+			break;
+		}
+
+	} else {
+		switch (st->hcchar_copy.b.multicnt) {
+		st->hctsiz_copy.b.xfersize = nrpackets * st->hcchar_copy.b.mps;
+		case 1:
+			st->hctsiz_copy.b.pid = DWC_PID_DATA0;
+			break;
+		case 2:
+			st->hctsiz_copy.b.pid = DWC_PID_DATA1;
+			break;
+		case 3:
+			st->hctsiz_copy.b.pid = DWC_PID_DATA2;
+			break;
+		}
+	}
+	FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ, st->hctsiz_copy.d32);
+	FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR, st->hcchar_copy.d32);
+	/* Channel is enabled on hcint handler exit */
+	fiq_print(FIQDBG_INT, state, "HSISOOUT");
+	return 1;
+}
+
+
+/**
+ * fiq_fsm_do_sof() - FSM start-of-frame interrupt handler
+ * @state:	Pointer to the state struct passed from banked FIQ mode registers.
+ * @num_channels:	set according to the DWC hardware configuration
+ *
+ * The SOF handler in FSM mode has two functions
+ * 1. Hold off SOF from causing schedule advancement in IRQ context if there's
+ *    nothing to do
+ * 2. Advance certain FSM states that require either a microframe delay, or a microframe
+ *    of holdoff.
+ *
+ * The second part is architecture-specific to mach-bcm2835 -
+ * a sane interrupt controller would have a mask register for ARM interrupt sources
+ * to be promoted to the nFIQ line, but it doesn't. Instead a single interrupt
+ * number (USB) can be enabled. This means that certain parts of the USB specification
+ * that require "wait a little while, then issue another packet" cannot be fulfilled with
+ * the timing granularity required to achieve optimal throughout. The workaround is to use
+ * the SOF "timer" (125uS) to perform this task.
+ */
+static int notrace noinline fiq_fsm_do_sof(struct fiq_state *state, int num_channels)
+{
+	hfnum_data_t hfnum = { .d32 = FIQ_READ(state->dwc_regs_base + HFNUM) };
+	int n;
+	int kick_irq = 0;
+
+	if ((hfnum.b.frnum & 0x7) == 1) {
+		/* We cannot issue csplits for transactions in the last frame past (n+1).1
+		 * Check to see if there are any transactions that are stale.
+		 * Boot them out.
+		 */
+		for (n = 0; n < num_channels; n++) {
+			switch (state->channel[n].fsm) {
+			case FIQ_PER_CSPLIT_WAIT:
+			case FIQ_PER_CSPLIT_NYET1:
+			case FIQ_PER_CSPLIT_POLL:
+			case FIQ_PER_CSPLIT_LAST:
+				/* Check if we are no longer in the same full-speed frame. */				
+				if (((state->channel[n].expected_uframe & 0x3FFF) & ~0x7) <
+						(hfnum.b.frnum & ~0x7))
+					state->channel[n].fsm = FIQ_PER_SPLIT_TIMEOUT;
+				break;
+			default:
+				break;
+			}
+		}
+	}
+
+	for (n = 0; n < num_channels; n++) {
+		switch (state->channel[n].fsm) {
+		
+		case FIQ_NP_SSPLIT_RETRY:
+		case FIQ_NP_IN_CSPLIT_RETRY:
+		case FIQ_NP_OUT_CSPLIT_RETRY:
+			fiq_fsm_restart_channel(state, n, 0);
+			break;
+			
+		case FIQ_HS_ISOC_SLEEPING:
+			state->channel[n].fsm = FIQ_HS_ISOC_TURBO;
+			fiq_fsm_restart_channel(state, n, 0);
+			break;
+			
+		case FIQ_PER_SSPLIT_QUEUED:
+			if ((hfnum.b.frnum & 0x7) == 5)
+				break;
+			if(!fiq_fsm_tt_in_use(state, num_channels, n)) {
+				if (!fiq_fsm_too_late(state, n)) {
+					fiq_print(FIQDBG_INT, st, "SOF GO %01d", n);
+					fiq_fsm_restart_channel(state, n, 0);
+					state->channel[n].fsm = FIQ_PER_SSPLIT_STARTED;
+				} else {
+					/* Transaction cannot be started without risking a device babble error */
+					state->channel[n].fsm = FIQ_PER_SPLIT_TIMEOUT;
+					state->haintmsk_saved.b2.chint &= ~(1 << n);
+					FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINTMSK, 0);
+					kick_irq |= 1;
+				}
+			}
+			break;
+			
+		case FIQ_PER_ISO_OUT_PENDING:
+			/* Ordinarily, this should be poked after the SSPLIT
+			 * complete interrupt for a competing transfer on the same
+			 * TT. Doesn't happen for aborted transactions though.
+			 */
+			if ((hfnum.b.frnum & 0x7) >= 5)
+				break;
+			if (!fiq_fsm_tt_in_use(state, num_channels, n)) {
+				/* Hardware bug. SOF can sometimes occur after the channel halt interrupt
+				 * that caused this.
+				 */
+					fiq_fsm_restart_channel(state, n, 0);
+					fiq_print(FIQDBG_INT, state, "SOF ISOC");
+					if (state->channel[n].nrpackets == 1) {
+						state->channel[n].fsm = FIQ_PER_ISO_OUT_LAST;
+					} else {
+						state->channel[n].fsm = FIQ_PER_ISO_OUT_ACTIVE;
+					}
+			}
+			break;
+
+		case FIQ_PER_CSPLIT_WAIT:
+			/* we are guaranteed to be in this state if and only if the SSPLIT interrupt
+			 * occurred when the bus transaction occurred. The SOF interrupt reversal bug
+			 * will utterly bugger this up though.
+			 */
+			if (hfnum.b.frnum != state->channel[n].expected_uframe) {
+				fiq_print(FIQDBG_INT, state, "SOFCS %d ", n);
+				state->channel[n].fsm = FIQ_PER_CSPLIT_POLL;
+				fiq_fsm_restart_channel(state, n, 0);
+				fiq_fsm_start_next_periodic(state, num_channels);
+				
+			}
+			break;
+		
+		case FIQ_PER_SPLIT_TIMEOUT:
+		case FIQ_DEQUEUE_ISSUED:
+			/* Ugly: we have to force a HCD interrupt.
+			 * Poke the mask for the channel in question.
+			 * We will take a fake SOF because of this, but
+			 * that's OK.
+			 */
+			state->haintmsk_saved.b2.chint &= ~(1 << n);
+			FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINTMSK, 0);
+			kick_irq |= 1;
+			break;
+		
+		default:
+			break;
+		}
+	}
+
+	if (state->kick_np_queues ||
+			dwc_frame_num_le(state->next_sched_frame, hfnum.b.frnum))
+		kick_irq |= 1;
+
+	return !kick_irq;
+}
+
+
+/**
+ * fiq_fsm_do_hcintr() - FSM host channel interrupt handler
+ * @state: Pointer to the FIQ state struct
+ * @num_channels: Number of channels as per hardware config
+ * @n: channel for which HAINT(i) was raised
+ * 
+ * An important property is that only the CHHLT interrupt is unmasked. Unfortunately, AHBerr is as well.
+ */
+static int notrace noinline fiq_fsm_do_hcintr(struct fiq_state *state, int num_channels, int n)
+{
+	hcint_data_t hcint;
+	hcintmsk_data_t hcintmsk;
+	hcint_data_t hcint_probe;
+	hcchar_data_t hcchar;
+	int handled = 0;
+	int restart = 0;
+	int last_csplit = 0;
+	int start_next_periodic = 0;
+	struct fiq_channel_state *st = &state->channel[n];
+	hfnum_data_t hfnum;
+
+	hcint.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINT);
+	hcintmsk.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINTMSK);
+	hcint_probe.d32 = hcint.d32 & hcintmsk.d32;
+
+	if (st->fsm != FIQ_PASSTHROUGH) {
+		fiq_print(FIQDBG_INT, state, "HC%01d ST%02d", n, st->fsm);
+		fiq_print(FIQDBG_INT, state, "%08x", hcint.d32);
+	}
+
+	switch (st->fsm) {
+	
+	case FIQ_PASSTHROUGH:
+	case FIQ_DEQUEUE_ISSUED:
+		/* doesn't belong to us, kick it upstairs */
+		break;
+
+	case FIQ_PASSTHROUGH_ERRORSTATE:
+		/* We are here to emulate the error recovery mechanism of the dwc HCD.
+		 * Several interrupts are unmasked if a previous transaction failed - it's
+		 * death for the FIQ to attempt to handle them as the channel isn't halted.
+		 * Emulate what the HCD does in this situation: mask and continue.
+		 * The FSM has no other state setup so this has to be handled out-of-band.
+		 */
+		fiq_print(FIQDBG_ERR, state, "ERRST %02d", n);
+		if (hcint_probe.b.nak || hcint_probe.b.ack || hcint_probe.b.datatglerr) {
+			fiq_print(FIQDBG_ERR, state, "RESET %02d", n);
+			/* In some random cases we can get a NAK interrupt coincident with a Xacterr
+			 * interrupt, after the device has disappeared.
+			 */
+			if (!hcint.b.xacterr)
+				st->nr_errors = 0;
+			hcintmsk.b.nak = 0;
+			hcintmsk.b.ack = 0;
+			hcintmsk.b.datatglerr = 0;
+			FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINTMSK, hcintmsk.d32);
+			return 1;
+		}
+		if (hcint_probe.b.chhltd) {
+			fiq_print(FIQDBG_ERR, state, "CHHLT %02d", n);
+			fiq_print(FIQDBG_ERR, state, "%08x", hcint.d32);
+			return 0;
+		}
+		break;
+
+	/* Non-periodic state groups */
+	case FIQ_NP_SSPLIT_STARTED:
+	case FIQ_NP_SSPLIT_RETRY:
+		/* Got a HCINT for a NP SSPLIT. Expected ACK / NAK / fail */
+		if (hcint.b.ack) {
+			/* SSPLIT complete. For OUT, the data has been sent. For IN, the LS transaction
+			 * will start shortly. SOF needs to kick the transaction to prevent a NYET flood. 
+			 */
+			if(st->hcchar_copy.b.epdir == 1)
+				st->fsm = FIQ_NP_IN_CSPLIT_RETRY;
+			else
+				st->fsm = FIQ_NP_OUT_CSPLIT_RETRY;
+			st->nr_errors = 0;
+			handled = 1;
+			fiq_fsm_setup_csplit(state, n);
+		} else if (hcint.b.nak) {
+			// No buffer space in TT. Retry on a uframe boundary.
+			st->fsm = FIQ_NP_SSPLIT_RETRY;
+			handled = 1;
+		} else if (hcint.b.xacterr) {
+			// The only other one we care about is xacterr. This implies HS bus error - retry.
+			st->nr_errors++;
+			st->fsm = FIQ_NP_SSPLIT_RETRY;
+			if (st->nr_errors >= 3) {
+				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
+			} else {
+				handled = 1;
+				restart = 1;
+			}
+		} else {
+			st->fsm = FIQ_NP_SPLIT_LS_ABORTED;
+			handled = 0;
+			restart = 0;
+		}
+		break;
+		
+	case FIQ_NP_IN_CSPLIT_RETRY:
+		/* Received a CSPLIT done interrupt.
+		 * Expected Data/NAK/STALL/NYET for IN. 
+		 */
+		if (hcint.b.xfercomp) {
+			/* For IN, data is present. */
+			st->fsm = FIQ_NP_SPLIT_DONE;
+		} else if (hcint.b.nak) {
+			/* no endpoint data. Punt it upstairs */
+			st->fsm = FIQ_NP_SPLIT_DONE;
+		} else if (hcint.b.nyet) {
+			/* CSPLIT NYET - retry on a uframe boundary. */
+			handled = 1;
+			st->nr_errors = 0;
+		} else if (hcint.b.datatglerr) {
+			/* data toggle errors do not set the xfercomp bit. */
+			st->fsm = FIQ_NP_SPLIT_LS_ABORTED;
+		} else if (hcint.b.xacterr) {
+			/* HS error. Retry immediate */
+			st->fsm = FIQ_NP_IN_CSPLIT_RETRY;
+			st->nr_errors++;
+			if (st->nr_errors >= 3) {
+				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
+			} else {
+				handled = 1;
+				restart = 1;
+			}
+		} else if (hcint.b.stall || hcint.b.bblerr) {
+			/* A STALL implies either a LS bus error or a genuine STALL. */
+			st->fsm = FIQ_NP_SPLIT_LS_ABORTED;
+		} else {
+			/*  Hardware bug. It's possible in some cases to
+			 *  get a channel halt with nothing else set when
+			 *  the response was a NYET. Treat as local 3-strikes retry. 
+			 */
+			hcint_data_t hcint_test = hcint;
+			hcint_test.b.chhltd = 0;
+			if (!hcint_test.d32) {
+				st->nr_errors++;
+				if (st->nr_errors >= 3) {
+					st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
+				} else {
+					handled = 1;
+				}
+			} else {
+				/* Bail out if something unexpected happened */
+				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
+			}
+		}
+		break;
+	
+	case FIQ_NP_OUT_CSPLIT_RETRY:
+		/* Received a CSPLIT done interrupt.
+		 * Expected ACK/NAK/STALL/NYET/XFERCOMP for OUT.*/
+		if (hcint.b.xfercomp) {
+			st->fsm = FIQ_NP_SPLIT_DONE;
+		} else if (hcint.b.nak) {
+			// The HCD will implement the holdoff on frame boundaries.
+			st->fsm = FIQ_NP_SPLIT_DONE;
+		} else if (hcint.b.nyet) {
+			// Hub still processing.
+			st->fsm = FIQ_NP_OUT_CSPLIT_RETRY;
+			handled = 1;
+			st->nr_errors = 0;
+			//restart = 1;
+		} else if (hcint.b.xacterr) { 
+			/* HS error. retry immediate */
+			st->fsm = FIQ_NP_OUT_CSPLIT_RETRY;
+			st->nr_errors++;
+			if (st->nr_errors >= 3) {
+				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
+			} else {
+				handled = 1;
+				restart = 1;
+			}
+		} else if (hcint.b.stall) { 
+			/* LS bus error or genuine stall */
+			st->fsm = FIQ_NP_SPLIT_LS_ABORTED;
+		} else {
+			/* 
+			 * Hardware bug. It's possible in some cases to get a
+			 * channel halt with nothing else set when the response was a NYET.
+			 * Treat as local 3-strikes retry.
+			 */
+			hcint_data_t hcint_test = hcint;
+			hcint_test.b.chhltd = 0;
+			if (!hcint_test.d32) {
+				st->nr_errors++;
+				if (st->nr_errors >= 3) {
+					st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
+				} else {
+					handled = 1;
+				}
+			} else {
+				// Something unexpected happened. AHBerror or babble perhaps. Let the IRQ deal with it.
+				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
+			}
+		}
+		break;
+	
+	/* Periodic split states (except isoc out) */
+	case FIQ_PER_SSPLIT_STARTED:
+		/* Expect an ACK or failure for SSPLIT */
+		if (hcint.b.ack) {
+			/*
+			 * SSPLIT transfer complete interrupt - the generation of this interrupt is fraught with bugs.
+			 * For a packet queued in microframe n-3 to appear in n-2, if the channel is enabled near the EOF1
+			 * point for microframe n-3, the packet will not appear on the bus until microframe n.
+			 * Additionally, the generation of the actual interrupt is dodgy. For a packet appearing on the bus
+			 * in microframe n, sometimes the interrupt is generated immediately. Sometimes, it appears in n+1
+			 * coincident with SOF for n+1.
+			 * SOF is also buggy. It can sometimes be raised AFTER the first bus transaction has taken place.
+			 * These appear to be caused by timing/clock crossing bugs within the core itself.
+			 * State machine workaround.
+			 */
+			hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
+			hcchar.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
+			fiq_fsm_setup_csplit(state, n);
+			/* Poke the oddfrm bit. If we are equivalent, we received the interrupt at the correct
+			 * time. If not, then we're in the next SOF.
+			 */
+			if ((hfnum.b.frnum & 0x1) == hcchar.b.oddfrm) {
+				fiq_print(FIQDBG_INT, state, "CSWAIT %01d", n);
+				st->expected_uframe = hfnum.b.frnum;
+				st->fsm = FIQ_PER_CSPLIT_WAIT;
+			} else {
+				fiq_print(FIQDBG_INT, state, "CSPOL  %01d", n);
+				/* For isochronous IN endpoints,
+				 * we need to hold off if we are expecting a lot of data */
+				if (st->hcchar_copy.b.mps < DATA0_PID_HEURISTIC) {
+					start_next_periodic = 1;
+				}
+				/* Danger will robinson: we are in a broken state. If our first interrupt after
+				 * this is a NYET, it will be delayed by 1 uframe and result in an unrecoverable
+				 * lag. Unmask the NYET interrupt. 
+				 */
+				st->expected_uframe = (hfnum.b.frnum + 1) & 0x3FFF;
+				st->fsm = FIQ_PER_CSPLIT_BROKEN_NYET1;
+				restart = 1;
+			}
+			handled = 1;
+		} else if (hcint.b.xacterr) {
+			/* 3-strikes retry is enabled, we have hit our max nr_errors */
+			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
+			start_next_periodic = 1;
+		} else {
+			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
+			start_next_periodic = 1;
+		}
+		/* We can now queue the next isochronous OUT transaction, if one is pending. */
+		if(fiq_fsm_tt_next_isoc(state, num_channels, n)) {
+			fiq_print(FIQDBG_INT, state, "NEXTISO ");
+		}
+		break;
+		
+	case FIQ_PER_CSPLIT_NYET1:
+		/* First CSPLIT attempt was a NYET. If we get a subsequent NYET,
+		 * we are too late and the TT has dropped its CSPLIT fifo.
+		 */
+		hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
+		hcchar.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
+		start_next_periodic = 1;
+		if (hcint.b.nak) {
+			st->fsm = FIQ_PER_SPLIT_DONE;
+		} else if (hcint.b.xfercomp) {
+			fiq_increment_dma_buf(state, num_channels, n);
+			st->fsm = FIQ_PER_CSPLIT_POLL;
+			st->nr_errors = 0;
+			if (fiq_fsm_more_csplits(state, n, &last_csplit)) {
+				handled = 1;
+				restart = 1;
+				if (!last_csplit)
+					start_next_periodic = 0;
+			} else {
+				st->fsm = FIQ_PER_SPLIT_DONE;
+			}
+		} else if (hcint.b.nyet) {
+			/* Doh. Data lost. */
+			st->fsm = FIQ_PER_SPLIT_NYET_ABORTED;
+		} else if (hcint.b.xacterr || hcint.b.stall || hcint.b.bblerr) {
+			st->fsm = FIQ_PER_SPLIT_LS_ABORTED;
+		} else {
+			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
+		}
+		break;
+		
+	case FIQ_PER_CSPLIT_BROKEN_NYET1:
+		/* 
+		 * we got here because our host channel is in the delayed-interrupt
+		 * state and we cannot take a NYET interrupt any later than when it
+		 * occurred. Disable then re-enable the channel if this happens to force
+		 * CSPLITs to occur at the right time. 
+		 */
+		hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
+		hcchar.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
+		fiq_print(FIQDBG_INT, state, "BROK: %01d ", n);
+		if (hcint.b.nak) {
+			st->fsm = FIQ_PER_SPLIT_DONE;
+			start_next_periodic = 1;
+		} else if (hcint.b.xfercomp) {
+			fiq_increment_dma_buf(state, num_channels, n);
+			if (fiq_fsm_more_csplits(state, n, &last_csplit)) {
+				st->fsm = FIQ_PER_CSPLIT_POLL;
+				handled = 1;
+				restart = 1;
+				start_next_periodic = 1;
+				/* Reload HCTSIZ for the next transfer */
+				fiq_fsm_reload_hctsiz(state, n);
+				if (!last_csplit)
+					start_next_periodic = 0;
+			} else {
+				st->fsm = FIQ_PER_SPLIT_DONE;
+			}
+		} else if (hcint.b.nyet) {
+			st->fsm = FIQ_PER_SPLIT_NYET_ABORTED;
+			start_next_periodic = 1;
+		} else if (hcint.b.xacterr || hcint.b.stall || hcint.b.bblerr) {
+			/* Local 3-strikes retry is handled by the core. This is a ERR response.*/
+			st->fsm = FIQ_PER_SPLIT_LS_ABORTED;
+		} else {
+			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
+		}
+		break;
+	
+	case FIQ_PER_CSPLIT_POLL:
+		hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
+		hcchar.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
+		start_next_periodic = 1;
+		if (hcint.b.nak) {
+			st->fsm = FIQ_PER_SPLIT_DONE;
+		} else if (hcint.b.xfercomp) {
+			fiq_increment_dma_buf(state, num_channels, n);
+			if (fiq_fsm_more_csplits(state, n, &last_csplit)) {
+				handled = 1;
+				restart = 1;
+				/* Reload HCTSIZ for the next transfer */
+				fiq_fsm_reload_hctsiz(state, n);
+				if (!last_csplit)
+					start_next_periodic = 0;
+			} else {
+				st->fsm = FIQ_PER_SPLIT_DONE;
+			}
+		} else if (hcint.b.nyet) {
+			/* Are we a NYET after the first data packet? */
+			if (st->nrpackets == 0) {
+				st->fsm = FIQ_PER_CSPLIT_NYET1;
+				handled = 1;
+				restart = 1;
+			} else {
+				/* We got a NYET when polling CSPLITs. Can happen
+				 * if our heuristic fails, or if someone disables us
+				 * for any significant length of time.
+				 */
+				if (st->nr_errors >= 3) {
+					st->fsm = FIQ_PER_SPLIT_NYET_ABORTED;
+				} else {
+					st->fsm = FIQ_PER_SPLIT_DONE;
+				}
+			}
+		} else if (hcint.b.xacterr || hcint.b.stall || hcint.b.bblerr) {
+			/* For xacterr, Local 3-strikes retry is handled by the core. This is a ERR response.*/
+			st->fsm = FIQ_PER_SPLIT_LS_ABORTED;
+		} else {
+			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
+		}
+		break;
+	
+	case FIQ_HS_ISOC_TURBO:
+		if (fiq_fsm_update_hs_isoc(state, n, hcint)) {
+			/* more transactions to come */
+			handled = 1;
+			restart = 1;
+			fiq_print(FIQDBG_INT, state, "HSISO M ");
+		} else {
+			st->fsm = FIQ_HS_ISOC_DONE;
+			fiq_print(FIQDBG_INT, state, "HSISO F ");
+		}
+		break;
+
+	case FIQ_HS_ISOC_ABORTED:
+		/* This abort is called by the driver rewriting the state mid-transaction
+		 * which allows the dequeue mechanism to work more effectively.
+		 */
+		break;
+
+	case FIQ_PER_ISO_OUT_ACTIVE:
+		if (hcint.b.ack) {
+			if(fiq_iso_out_advance(state, num_channels, n)) {
+				/* last OUT transfer */
+				st->fsm = FIQ_PER_ISO_OUT_LAST;
+				/*
+				 * Assuming the periodic FIFO in the dwc core
+				 * actually does its job properly, we can queue
+				 * the next ssplit now and in theory, the wire
+				 * transactions will be in-order.
+				 */
+				// No it doesn't. It appears to process requests in host channel order.
+				//start_next_periodic = 1;
+			}
+			handled = 1;
+			restart = 1;
+		} else {
+			/*
+			 * Isochronous transactions carry on regardless. Log the error
+			 * and continue.
+			 */
+			//explode += 1;
+			st->nr_errors++;
+			if(fiq_iso_out_advance(state, num_channels, n)) {
+				st->fsm = FIQ_PER_ISO_OUT_LAST;
+				//start_next_periodic = 1;
+			}
+			handled = 1;
+			restart = 1;
+		}
+		break;
+	
+	case FIQ_PER_ISO_OUT_LAST:
+		if (hcint.b.ack) {
+			/* All done here */
+			st->fsm = FIQ_PER_ISO_OUT_DONE;
+		} else {
+			st->fsm = FIQ_PER_ISO_OUT_DONE;
+			st->nr_errors++;
+		}
+		start_next_periodic = 1;
+		break;
+
+	case FIQ_PER_SPLIT_TIMEOUT:
+		/* SOF kicked us because we overran. */
+		start_next_periodic = 1;
+		break;
+
+	default:
+		break;
+	}
+
+	if (handled) {
+		FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINT, hcint.d32);
+	} else {
+		/* Copy the regs into the state so the IRQ knows what to do */
+		st->hcint_copy.d32 = hcint.d32;
+	}
+
+	if (restart) {
+		/* Restart always implies handled. */
+		if (restart == 2) {
+			/* For complete-split INs, the show must go on.
+			 * Force a channel restart */
+			fiq_fsm_restart_channel(state, n, 1);
+		} else {
+			fiq_fsm_restart_channel(state, n, 0);
+		}
+	}
+	if (start_next_periodic) {
+		fiq_fsm_start_next_periodic(state, num_channels);
+	}
+	if (st->fsm != FIQ_PASSTHROUGH)
+		fiq_print(FIQDBG_INT, state, "FSMOUT%02d", st->fsm);
+
+	return handled;
+}
+
+
+/**
+ * dwc_otg_fiq_fsm() - Flying State Machine (monster) FIQ
+ * @state:		pointer to state struct passed from the banked FIQ mode registers.
+ * @num_channels:	set according to the DWC hardware configuration
+ * @dma:		pointer to DMA bounce buffers for split transaction slots
+ *
+ * The FSM FIQ performs the low-level tasks that normally would be performed by the microcode
+ * inside an EHCI or similar host controller regarding split transactions. The DWC core
+ * interrupts each and every time a split transaction packet is received or sent successfully.
+ * This results in either an interrupt storm when everything is working "properly", or
+ * the interrupt latency of the system in general breaks time-sensitive periodic split
+ * transactions. Pushing the low-level, but relatively easy state machine work into the FIQ
+ * solves these problems.
+ *
+ * Return: void
+ */
+void notrace dwc_otg_fiq_fsm(struct fiq_state *state, int num_channels)
+{
+	gintsts_data_t gintsts, gintsts_handled;
+	gintmsk_data_t gintmsk;
+	//hfnum_data_t hfnum;
+	haint_data_t haint, haint_handled;
+	haintmsk_data_t haintmsk;
+	int kick_irq = 0;
+
+	gintsts_handled.d32 = 0;
+	haint_handled.d32 = 0;
+
+	fiq_fsm_spin_lock(&state->lock);
+	gintsts.d32 = FIQ_READ(state->dwc_regs_base + GINTSTS);
+	gintmsk.d32 = FIQ_READ(state->dwc_regs_base + GINTMSK);
+	gintsts.d32 &= gintmsk.d32;
+
+	if (gintsts.b.sofintr) {
+		/* For FSM mode, SOF is required to keep the state machine advance for
+		 * certain stages of the periodic pipeline. It's death to mask this
+		 * interrupt in that case.
+		 */
+
+		if (!fiq_fsm_do_sof(state, num_channels)) {
+			/* Kick IRQ once. Queue advancement means that all pending transactions
+			 * will get serviced when the IRQ finally executes.
+			 */
+			if (state->gintmsk_saved.b.sofintr == 1)
+				kick_irq |= 1;
+			state->gintmsk_saved.b.sofintr = 0;	
+		}
+		gintsts_handled.b.sofintr = 1;
+	}
+
+	if (gintsts.b.hcintr) {
+		int i;
+		haint.d32 = FIQ_READ(state->dwc_regs_base + HAINT);
+		haintmsk.d32 = FIQ_READ(state->dwc_regs_base + HAINTMSK);
+		haint.d32 &= haintmsk.d32;
+		haint_handled.d32 = 0;
+		for (i=0; i<num_channels; i++) {
+			if (haint.b2.chint & (1 << i)) {
+				if(!fiq_fsm_do_hcintr(state, num_channels, i)) {
+					/* HCINT was not handled in FIQ
+					 * HAINT is level-sensitive, leading to level-sensitive ginststs.b.hcint bit.
+					 * Mask HAINT(i) but keep top-level hcint unmasked.
+					 */
+					state->haintmsk_saved.b2.chint &= ~(1 << i);
+				} else {
+					/* do_hcintr cleaned up after itself, but clear haint */
+					haint_handled.b2.chint |= (1 << i);
+				}
+			}
+		}
+		
+		if (haint_handled.b2.chint) {
+			FIQ_WRITE(state->dwc_regs_base + HAINT, haint_handled.d32);
+		}
+
+		if (haintmsk.d32 != (haintmsk.d32 & state->haintmsk_saved.d32)) {
+			/*
+			 * This is necessary to avoid multiple retriggers of the MPHI in the case
+			 * where interrupts are held off and HCINTs start to pile up.
+			 * Only wake up the IRQ if a new interrupt came in, was not handled and was
+			 * masked.
+			 */
+			haintmsk.d32 &= state->haintmsk_saved.d32;
+			FIQ_WRITE(state->dwc_regs_base + HAINTMSK, haintmsk.d32);
+			kick_irq |= 1;
+		}
+		/* Top-Level interrupt - always handled because it's level-sensitive */
+		gintsts_handled.b.hcintr = 1;
+	}
+
+
+	/* Clear the bits in the saved register that were not handled but were triggered. */
+	state->gintmsk_saved.d32 &= ~(gintsts.d32 & ~gintsts_handled.d32);
+
+	/* FIQ didn't handle something - mask has changed - write new mask */
+	if (gintmsk.d32 != (gintmsk.d32 & state->gintmsk_saved.d32)) {
+		gintmsk.d32 &= state->gintmsk_saved.d32;
+		gintmsk.b.sofintr = 1;
+		FIQ_WRITE(state->dwc_regs_base + GINTMSK, gintmsk.d32);
+//		fiq_print(FIQDBG_INT, state, "KICKGINT");
+//		fiq_print(FIQDBG_INT, state, "%08x", gintmsk.d32);
+//		fiq_print(FIQDBG_INT, state, "%08x", state->gintmsk_saved.d32);
+		kick_irq |= 1;
+	}
+
+	if (gintsts_handled.d32) {
+		/* Only applies to edge-sensitive bits in GINTSTS */
+		FIQ_WRITE(state->dwc_regs_base + GINTSTS, gintsts_handled.d32);
+	}
+
+	/* We got an interrupt, didn't handle it. */
+	if (kick_irq) {
+		state->mphi_int_count++;
+		FIQ_WRITE(state->mphi_regs.outdda, (int) state->dummy_send);
+		FIQ_WRITE(state->mphi_regs.outddb, (1<<29));
+
+	}
+	state->fiq_done++;
+	mb();
+	fiq_fsm_spin_unlock(&state->lock);
+}
+
+
+/**
+ * dwc_otg_fiq_nop() - FIQ "lite"
+ * @state:	pointer to state struct passed from the banked FIQ mode registers.
+ *
+ * The "nop" handler does not intervene on any interrupts other than SOF.
+ * It is limited in scope to deciding at each SOF if the IRQ SOF handler (which deals
+ * with non-periodic/periodic queues) needs to be kicked.
+ *
+ * This is done to hold off the SOF interrupt, which occurs at a rate of 8000 per second.
+ *
+ * Return: void
+ */
+void notrace dwc_otg_fiq_nop(struct fiq_state *state)
+{
+	gintsts_data_t gintsts, gintsts_handled;
+	gintmsk_data_t gintmsk;
+	hfnum_data_t hfnum;
+
+	fiq_fsm_spin_lock(&state->lock);
+	hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
+	gintsts.d32 = FIQ_READ(state->dwc_regs_base + GINTSTS);
+	gintmsk.d32 = FIQ_READ(state->dwc_regs_base + GINTMSK);
+	gintsts.d32 &= gintmsk.d32;
+	gintsts_handled.d32 = 0;
+
+	if (gintsts.b.sofintr) {
+		if (!state->kick_np_queues &&
+				dwc_frame_num_gt(state->next_sched_frame, hfnum.b.frnum)) {
+			/* SOF handled, no work to do, just ACK interrupt */
+			gintsts_handled.b.sofintr = 1;
+		} else {
+			/* Kick IRQ */
+			state->gintmsk_saved.b.sofintr = 0;
+		}
+	}
+
+	/* Reset handled interrupts */
+	if(gintsts_handled.d32) {
+		FIQ_WRITE(state->dwc_regs_base + GINTSTS, gintsts_handled.d32);
+	}
+
+	/* Clear the bits in the saved register that were not handled but were triggered. */
+	state->gintmsk_saved.d32 &= ~(gintsts.d32 & ~gintsts_handled.d32);
+
+	/* We got an interrupt, didn't handle it and want to mask it */
+	if (~(state->gintmsk_saved.d32)) {
+		state->mphi_int_count++;
+		gintmsk.d32 &= state->gintmsk_saved.d32;
+		FIQ_WRITE(state->dwc_regs_base + GINTMSK, gintmsk.d32);
+		/* Force a clear before another dummy send */
+		FIQ_WRITE(state->mphi_regs.intstat, (1<<29));
+		FIQ_WRITE(state->mphi_regs.outdda, (int) state->dummy_send);
+		FIQ_WRITE(state->mphi_regs.outddb, (1<<29));
+
+	}
+	state->fiq_done++;
+	mb();
+	fiq_fsm_spin_unlock(&state->lock);
+}
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,367 @@
+/*
+ * dwc_otg_fiq_fsm.h - Finite state machine FIQ header definitions
+ *
+ * Copyright (c) 2013 Raspberry Pi Foundation
+ *
+ * Author: Jonathan Bell <jonathan@raspberrypi.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *	* Redistributions of source code must retain the above copyright
+ *	  notice, this list of conditions and the following disclaimer.
+ *	* Redistributions in binary form must reproduce the above copyright
+ *	  notice, this list of conditions and the following disclaimer in the
+ *	  documentation and/or other materials provided with the distribution.
+ *	* Neither the name of Raspberry Pi nor the
+ *	  names of its contributors may be used to endorse or promote products
+ *	  derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This FIQ implements functionality that performs split transactions on
+ * the dwc_otg hardware without any outside intervention. A split transaction
+ * is "queued" by nominating a specific host channel to perform the entirety
+ * of a split transaction. This FIQ will then perform the microframe-precise
+ * scheduling required in each phase of the transaction until completion.
+ *
+ * The FIQ functionality has been surgically implanted into the Synopsys
+ * vendor-provided driver.
+ *
+ */
+
+#ifndef DWC_OTG_FIQ_FSM_H_
+#define DWC_OTG_FIQ_FSM_H_
+
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_hcd.h"
+#include <linux/kernel.h>
+#include <linux/irqflags.h>
+#include <linux/string.h>
+#include <asm/barrier.h>
+
+#if 0
+#define FLAME_ON(x)					\
+do {							\
+	int gpioreg;                                    \
+							\
+	gpioreg = readl(__io_address(0x20200000+0x8));	\
+	gpioreg &= ~(7 << (x-20)*3);			\
+	gpioreg |= 0x1 << (x-20)*3;			\
+	writel(gpioreg, __io_address(0x20200000+0x8));	\
+							\
+	writel(1<<x, __io_address(0x20200000+(0x1C)));	\
+} while (0)
+
+#define FLAME_OFF(x)					\
+do {							\
+	writel(1<<x, __io_address(0x20200000+(0x28)));	\
+} while (0)
+#else 
+#define FLAME_ON(x) do { } while (0)
+#define FLAME_OFF(X) do { } while (0)
+#endif 
+
+/* This is a quick-and-dirty arch-specific register read/write. We know that
+ * writes to a peripheral on BCM2835 will always arrive in-order, also that
+ * reads and writes are executed in-order therefore the need for memory barriers 
+ * is obviated if we're only talking to USB.
+ */
+#define FIQ_WRITE(_addr_,_data_) (*(volatile unsigned int *) (_addr_) = (_data_))
+#define FIQ_READ(_addr_) (*(volatile unsigned int *) (_addr_))
+
+/* FIQ-ified register definitions. Offsets are from dwc_regs_base. */
+#define GINTSTS		0x014
+#define GINTMSK		0x018
+/* Debug register. Poll the top of the received packets FIFO. */
+#define GRXSTSR		0x01C
+#define HFNUM		0x408
+#define HAINT		0x414
+#define HAINTMSK	0x418
+#define HPRT0		0x440
+
+/* HC_regs start from an offset of 0x500 */
+#define HC_START	0x500
+#define HC_OFFSET	0x020
+
+#define HC_DMA		0x514
+
+#define HCCHAR		0x00
+#define HCSPLT		0x04
+#define HCINT		0x08
+#define HCINTMSK	0x0C
+#define HCTSIZ		0x10
+
+#define ISOC_XACTPOS_ALL 	0b11
+#define ISOC_XACTPOS_BEGIN	0b10
+#define ISOC_XACTPOS_MID	0b00
+#define ISOC_XACTPOS_END	0b01
+
+#define DWC_PID_DATA2	0b01
+#define DWC_PID_MDATA	0b11
+#define DWC_PID_DATA1	0b10
+#define DWC_PID_DATA0	0b00
+
+typedef struct {
+	volatile void* base;
+	volatile void* ctrl;
+	volatile void* outdda;
+	volatile void* outddb;
+	volatile void* intstat;
+} mphi_regs_t;
+
+enum fiq_debug_level {
+	FIQDBG_SCHED = (1 << 0),
+	FIQDBG_INT   = (1 << 1),
+	FIQDBG_ERR   = (1 << 2),
+	FIQDBG_PORTHUB = (1 << 3),
+};
+
+typedef struct {
+	union {
+		uint32_t slock;
+		struct _tickets {
+			uint16_t owner;
+			uint16_t next;
+		} tickets;
+	};
+} fiq_lock_t;
+
+struct fiq_state;
+
+extern void _fiq_print (enum fiq_debug_level dbg_lvl, volatile struct fiq_state *state, char *fmt, ...);
+#if 0
+#define fiq_print _fiq_print
+#else
+#define fiq_print(x, y, ...)
+#endif
+
+extern bool fiq_enable, fiq_fsm_enable;
+extern ushort nak_holdoff;
+
+/**
+ * enum fiq_fsm_state - The FIQ FSM states.
+ *
+ * This is the "core" of the FIQ FSM. Broadly, the FSM states follow the
+ * USB2.0 specification for host responses to various transaction states.
+ * There are modifications to this host state machine because of a variety of
+ * quirks and limitations in the dwc_otg hardware.
+ *
+ * The fsm state is also used to communicate back to the driver on completion of
+ * a split transaction. The end states are used in conjunction with the interrupts
+ * raised by the final transaction.
+ */
+enum fiq_fsm_state {
+	/* FIQ isn't enabled for this host channel */
+	FIQ_PASSTHROUGH = 0,
+	/* For the first interrupt received for this channel,
+	 * the FIQ has to ack any interrupts indicating success. */
+	FIQ_PASSTHROUGH_ERRORSTATE = 31,
+	/* Nonperiodic state groups */
+	FIQ_NP_SSPLIT_STARTED = 1,
+	FIQ_NP_SSPLIT_RETRY = 2,
+	FIQ_NP_OUT_CSPLIT_RETRY = 3,
+	FIQ_NP_IN_CSPLIT_RETRY = 4,
+	FIQ_NP_SPLIT_DONE = 5,
+	FIQ_NP_SPLIT_LS_ABORTED = 6,
+	/* This differentiates a HS transaction error from a LS one
+	 * (handling the hub state is different) */
+	FIQ_NP_SPLIT_HS_ABORTED = 7,
+
+	/* Periodic state groups */
+	/* Periodic transactions are either started directly by the IRQ handler
+	 * or deferred if the TT is already in use.
+	 */
+	FIQ_PER_SSPLIT_QUEUED = 8,
+	FIQ_PER_SSPLIT_STARTED = 9,
+	FIQ_PER_SSPLIT_LAST = 10,
+	
+	
+	FIQ_PER_ISO_OUT_PENDING = 11,
+	FIQ_PER_ISO_OUT_ACTIVE = 12,
+	FIQ_PER_ISO_OUT_LAST = 13,
+	FIQ_PER_ISO_OUT_DONE = 27,
+
+	FIQ_PER_CSPLIT_WAIT = 14,
+	FIQ_PER_CSPLIT_NYET1 = 15,
+	FIQ_PER_CSPLIT_BROKEN_NYET1 = 28,
+	FIQ_PER_CSPLIT_NYET_FAFF = 29,
+	/* For multiple CSPLITs (large isoc IN, or delayed interrupt) */
+	FIQ_PER_CSPLIT_POLL = 16,
+	/* The last CSPLIT for a transaction has been issued, differentiates
+	 * for the state machine to queue the next packet.
+	 */
+	FIQ_PER_CSPLIT_LAST = 17,
+
+	FIQ_PER_SPLIT_DONE = 18,
+	FIQ_PER_SPLIT_LS_ABORTED = 19,
+	FIQ_PER_SPLIT_HS_ABORTED = 20,
+	FIQ_PER_SPLIT_NYET_ABORTED = 21,
+	/* Frame rollover has occurred without the transaction finishing. */
+	FIQ_PER_SPLIT_TIMEOUT = 22,
+	
+	/* FIQ-accelerated HS Isochronous state groups */
+	FIQ_HS_ISOC_TURBO = 23,
+	/* For interval > 1, SOF wakes up the isochronous FSM */
+	FIQ_HS_ISOC_SLEEPING = 24,
+	FIQ_HS_ISOC_DONE = 25,
+	FIQ_HS_ISOC_ABORTED = 26,
+	FIQ_DEQUEUE_ISSUED = 30,
+	FIQ_TEST = 32,
+};
+
+struct fiq_stack {
+	int magic1;
+	uint8_t stack[2048];
+	int magic2;
+};
+
+
+/**
+ * struct fiq_dma_info - DMA bounce buffer utilisation information (per-channel)
+ * @index:	Number of slots reported used for IN transactions / number of slots
+ *			transmitted for an OUT transaction
+ * @slot_len[6]: Number of actual transfer bytes in each slot (255 if unused)
+ *
+ * Split transaction transfers can have variable length depending on other bus
+ * traffic. The OTG core DMA engine requires 4-byte aligned addresses therefore
+ * each transaction needs a guaranteed aligned address. A maximum of 6 split transfers
+ * can happen per-frame.
+ */
+struct fiq_dma_info {
+	u8 index;
+	u8 slot_len[6];
+};
+
+struct __attribute__((packed)) fiq_split_dma_slot {
+	u8 buf[188];
+};
+
+struct fiq_dma_channel {
+	struct __attribute__((packed)) fiq_split_dma_slot index[6];
+};
+
+struct fiq_dma_blob {
+	struct __attribute__((packed)) fiq_dma_channel channel[0];
+};
+
+/**
+ * struct fiq_hs_isoc_info - USB2.0 isochronous data
+ * @iso_frame:	Pointer to the array of OTG URB iso_frame_descs.
+ * @nrframes:	Total length of iso_frame_desc array
+ * @index:	Current index (FIQ-maintained)
+ *
+ */
+struct fiq_hs_isoc_info {
+	struct dwc_otg_hcd_iso_packet_desc *iso_desc;
+	unsigned int nrframes;
+	unsigned int index;
+};
+
+/**
+ * struct fiq_channel_state - FIQ state machine storage
+ * @fsm:	Current state of the channel as understood by the FIQ
+ * @nr_errors:	Number of transaction errors on this split-transaction
+ * @hub_addr:   SSPLIT/CSPLIT destination hub
+ * @port_addr:  SSPLIT/CSPLIT destination port - always 1 if single TT hub
+ * @nrpackets:  For isoc OUT, the number of split-OUT packets to transmit. For
+ * 		split-IN, number of CSPLIT data packets that were received.
+ * @hcchar_copy:
+ * @hcsplt_copy:
+ * @hcintmsk_copy:
+ * @hctsiz_copy:	Copies of the host channel registers.
+ * 			For use as scratch, or for returning state.
+ *
+ * The fiq_channel_state is state storage between interrupts for a host channel. The
+ * FSM state is stored here. Members of this structure must only be set up by the
+ * driver prior to enabling the FIQ for this host channel, and not touched until the FIQ
+ * has updated the state to either a COMPLETE state group or ABORT state group.
+ */
+
+struct fiq_channel_state {
+	enum fiq_fsm_state fsm;
+	unsigned int nr_errors;
+	unsigned int hub_addr;
+	unsigned int port_addr;
+	/* Hardware bug workaround: sometimes channel halt interrupts are
+	 * delayed until the next SOF. Keep track of when we expected to get interrupted. */
+	unsigned int expected_uframe; 
+	/* in/out for communicating number of dma buffers used, or number of ISOC to do */
+	unsigned int nrpackets;
+	struct fiq_dma_info dma_info;
+	struct fiq_hs_isoc_info hs_isoc_info;
+	/* Copies of HC registers - in/out communication from/to IRQ handler
+	 * and for ease of channel setup. A bit of mungeing is performed - for
+	 * example the hctsiz.b.maxp is _always_ the max packet size of the endpoint. 
+	 */
+	hcchar_data_t hcchar_copy;
+	hcsplt_data_t hcsplt_copy;
+	hcint_data_t hcint_copy;
+	hcintmsk_data_t hcintmsk_copy;
+	hctsiz_data_t hctsiz_copy;
+	hcdma_data_t hcdma_copy;
+};
+
+/**
+ * struct fiq_state - top-level FIQ state machine storage
+ * @mphi_regs:		virtual address of the MPHI peripheral register file
+ * @dwc_regs_base:	virtual address of the base of the DWC core register file
+ * @dma_base:		physical address for the base of the DMA bounce buffers
+ * @dummy_send:		Scratch area for sending a fake message to the MPHI peripheral
+ * @gintmsk_saved:	Top-level mask of interrupts that the FIQ has not handled.
+ * 			Used for determining which interrupts fired to set off the IRQ handler.
+ * @haintmsk_saved:	Mask of interrupts from host channels that the FIQ did not handle internally.
+ * @np_count:		Non-periodic transactions in the active queue
+ * @np_sent:		Count of non-periodic transactions that have completed
+ * @next_sched_frame:	For periodic transactions handled by the driver's SOF-driven queuing mechanism,
+ * 			this is the next frame on which a SOF interrupt is required. Used to hold off
+ * 			passing SOF through to the driver until necessary.
+ * @channel[n]:		Per-channel FIQ state. Allocated during init depending on the number of host
+ * 			channels configured into the core logic.
+ *
+ * This is passed as the first argument to the dwc_otg_fiq_fsm top-level FIQ handler from the asm stub.
+ * It contains top-level state information.
+ */
+struct fiq_state {
+	fiq_lock_t lock;
+	mphi_regs_t mphi_regs;
+	void *dwc_regs_base;
+	dma_addr_t dma_base;
+	struct fiq_dma_blob *fiq_dmab;
+	void *dummy_send;
+	gintmsk_data_t gintmsk_saved;
+	haintmsk_data_t haintmsk_saved;
+	int mphi_int_count;
+	unsigned int fiq_done;
+	unsigned int kick_np_queues;
+	unsigned int next_sched_frame;
+#ifdef FIQ_DEBUG
+	char * buffer;
+	unsigned int bufsiz;
+#endif
+	struct fiq_channel_state channel[0];
+};
+
+extern void fiq_fsm_spin_lock(fiq_lock_t *lock);
+
+extern void fiq_fsm_spin_unlock(fiq_lock_t *lock);
+
+extern int fiq_fsm_too_late(struct fiq_state *st, int n);
+
+extern int fiq_fsm_tt_in_use(struct fiq_state *st, int num_channels, int n);
+
+extern void dwc_otg_fiq_fsm(struct fiq_state *state, int num_channels);
+
+extern void dwc_otg_fiq_nop(struct fiq_state *state);
+
+#endif /* DWC_OTG_FIQ_FSM_H_ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_fiq_stub.S linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_fiq_stub.S
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_fiq_stub.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_fiq_stub.S	2015-03-26 11:46:54.312238202 +0100
@@ -0,0 +1,81 @@
+/*
+ * dwc_otg_fiq_fsm.S - assembly stub for the FSM FIQ
+ *
+ * Copyright (c) 2013 Raspberry Pi Foundation
+ *
+ * Author: Jonathan Bell <jonathan@raspberrypi.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *	* Redistributions of source code must retain the above copyright
+ *	  notice, this list of conditions and the following disclaimer.
+ *	* Redistributions in binary form must reproduce the above copyright
+ *	  notice, this list of conditions and the following disclaimer in the
+ *	  documentation and/or other materials provided with the distribution.
+ *	* Neither the name of Raspberry Pi nor the
+ *	  names of its contributors may be used to endorse or promote products
+ *	  derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <asm/assembler.h>
+#include <linux/linkage.h>
+
+
+.text
+
+.global _dwc_otg_fiq_stub_end;
+
+/**
+  * _dwc_otg_fiq_stub() - entry copied to the FIQ vector page to allow
+  * a C-style function call with arguments from the FIQ banked registers.
+  * r0 = &hcd->fiq_state
+  * r1 = &hcd->num_channels
+  * r2 = &hcd->dma_buffers
+  * Tramples: r0, r1, r2, r4, fp, ip
+  */
+
+ENTRY(_dwc_otg_fiq_stub)
+	/* Stash unbanked regs - SP will have been set up for us */
+	mov ip, sp;
+	stmdb sp!, {r0-r12, lr};
+#ifdef FIQ_DEBUG
+	// Cycle profiling - read cycle counter at start
+	mrc p15, 0, r5, c15, c12, 1;
+#endif
+	/* r11 = fp, don't trample it */
+	mov r4, fp;
+	/* set EABI frame size */
+	sub fp, ip, #512;
+
+	/* for fiq NOP mode - just need state */
+	mov r0, r8;
+	/* r9 = num_channels */
+	mov r1, r9;
+	/* r10 = struct *dma_bufs */
+//	mov r2, r10;
+
+	/* r4 = &fiq_c_function */
+	blx r4;
+#ifdef FIQ_DEBUG
+	mrc p15, 0, r4, c15, c12, 1;
+	subs r5, r5, r4;
+	// r5 is now the cycle count time for executing the FIQ. Store it somewhere?
+#endif
+	ldmia sp!, {r0-r12, lr};
+	subs pc, lr, #4;
+_dwc_otg_fiq_stub_end:
+END(_dwc_otg_fiq_stub)
+
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd.c	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,4244 @@
+
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.c $
+ * $Revision: #104 $
+ * $Date: 2011/10/24 $
+ * $Change: 1871159 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/** @file
+ * This file implements HCD Core. All code in this file is portable and doesn't
+ * use any OS specific functions.
+ * Interface provided by HCD Core is defined in <code><hcd_if.h></code>
+ * header file.
+ */
+
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_fiq_fsm.h"
+
+extern bool microframe_schedule;
+extern uint16_t fiq_fsm_mask, nak_holdoff;
+
+//#define DEBUG_HOST_CHANNELS
+#ifdef DEBUG_HOST_CHANNELS
+static int last_sel_trans_num_per_scheduled = 0;
+static int last_sel_trans_num_nonper_scheduled = 0;
+static int last_sel_trans_num_avail_hc_at_start = 0;
+static int last_sel_trans_num_avail_hc_at_end = 0;
+#endif /* DEBUG_HOST_CHANNELS */
+
+
+dwc_otg_hcd_t *dwc_otg_hcd_alloc_hcd(void)
+{
+	return DWC_ALLOC(sizeof(dwc_otg_hcd_t));
+}
+
+/**
+ * Connection timeout function.  An OTG host is required to display a
+ * message if the device does not connect within 10 seconds.
+ */
+void dwc_otg_hcd_connect_timeout(void *ptr)
+{
+	DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, ptr);
+	DWC_PRINTF("Connect Timeout\n");
+	__DWC_ERROR("Device Not Connected/Responding\n");
+}
+
+#if defined(DEBUG)
+static void dump_channel_info(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	if (qh->channel != NULL) {
+		dwc_hc_t *hc = qh->channel;
+		dwc_list_link_t *item;
+		dwc_otg_qh_t *qh_item;
+		int num_channels = hcd->core_if->core_params->host_channels;
+		int i;
+
+		dwc_otg_hc_regs_t *hc_regs;
+		hcchar_data_t hcchar;
+		hcsplt_data_t hcsplt;
+		hctsiz_data_t hctsiz;
+		uint32_t hcdma;
+
+		hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+		hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
+		hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+		hcdma = DWC_READ_REG32(&hc_regs->hcdma);
+
+		DWC_PRINTF("  Assigned to channel %p:\n", hc);
+		DWC_PRINTF("    hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32,
+			   hcsplt.d32);
+		DWC_PRINTF("    hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32,
+			   hcdma);
+		DWC_PRINTF("    dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
+			   hc->dev_addr, hc->ep_num, hc->ep_is_in);
+		DWC_PRINTF("    ep_type: %d\n", hc->ep_type);
+		DWC_PRINTF("    max_packet: %d\n", hc->max_packet);
+		DWC_PRINTF("    data_pid_start: %d\n", hc->data_pid_start);
+		DWC_PRINTF("    xfer_started: %d\n", hc->xfer_started);
+		DWC_PRINTF("    halt_status: %d\n", hc->halt_status);
+		DWC_PRINTF("    xfer_buff: %p\n", hc->xfer_buff);
+		DWC_PRINTF("    xfer_len: %d\n", hc->xfer_len);
+		DWC_PRINTF("    qh: %p\n", hc->qh);
+		DWC_PRINTF("  NP inactive sched:\n");
+		DWC_LIST_FOREACH(item, &hcd->non_periodic_sched_inactive) {
+			qh_item =
+			    DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
+			DWC_PRINTF("    %p\n", qh_item);
+		}
+		DWC_PRINTF("  NP active sched:\n");
+		DWC_LIST_FOREACH(item, &hcd->non_periodic_sched_active) {
+			qh_item =
+			    DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
+			DWC_PRINTF("    %p\n", qh_item);
+		}
+		DWC_PRINTF("  Channels: \n");
+		for (i = 0; i < num_channels; i++) {
+			dwc_hc_t *hc = hcd->hc_ptr_array[i];
+			DWC_PRINTF("    %2d: %p\n", i, hc);
+		}
+	}
+}
+#else
+#define dump_channel_info(hcd, qh)
+#endif /* DEBUG */
+
+/**
+ * Work queue function for starting the HCD when A-Cable is connected.
+ * The hcd_start() must be called in a process context.
+ */
+static void hcd_start_func(void *_vp)
+{
+	dwc_otg_hcd_t *hcd = (dwc_otg_hcd_t *) _vp;
+
+	DWC_DEBUGPL(DBG_HCDV, "%s() %p\n", __func__, hcd);
+	if (hcd) {
+		hcd->fops->start(hcd);
+	}
+}
+
+static void del_xfer_timers(dwc_otg_hcd_t * hcd)
+{
+#ifdef DEBUG
+	int i;
+	int num_channels = hcd->core_if->core_params->host_channels;
+	for (i = 0; i < num_channels; i++) {
+		DWC_TIMER_CANCEL(hcd->core_if->hc_xfer_timer[i]);
+	}
+#endif
+}
+
+static void del_timers(dwc_otg_hcd_t * hcd)
+{
+	del_xfer_timers(hcd);
+	DWC_TIMER_CANCEL(hcd->conn_timer);
+}
+
+/**
+ * Processes all the URBs in a single list of QHs. Completes them with
+ * -ESHUTDOWN and frees the QTD.
+ */
+static void kill_urbs_in_qh_list(dwc_otg_hcd_t * hcd, dwc_list_link_t * qh_list)
+{
+	dwc_list_link_t *qh_item, *qh_tmp;
+	dwc_otg_qh_t *qh;
+	dwc_otg_qtd_t *qtd, *qtd_tmp;
+
+	DWC_LIST_FOREACH_SAFE(qh_item, qh_tmp, qh_list) {
+		qh = DWC_LIST_ENTRY(qh_item, dwc_otg_qh_t, qh_list_entry);
+		DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp,
+					 &qh->qtd_list, qtd_list_entry) {
+			qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
+			if (qtd->urb != NULL) {
+				hcd->fops->complete(hcd, qtd->urb->priv,
+						    qtd->urb, -DWC_E_SHUTDOWN);
+				dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+			}
+
+		}
+		if(qh->channel) {
+			/* Using hcchar.chen == 1 is not a reliable test.
+			 * It is possible that the channel has already halted
+			 * but not yet been through the IRQ handler.
+			 */
+			dwc_otg_hc_halt(hcd->core_if, qh->channel,
+				DWC_OTG_HC_XFER_URB_DEQUEUE);
+			if(microframe_schedule)
+				hcd->available_host_channels++;
+			qh->channel = NULL;
+		}
+		dwc_otg_hcd_qh_remove(hcd, qh);
+	}
+}
+
+/**
+ * Responds with an error status of ESHUTDOWN to all URBs in the non-periodic
+ * and periodic schedules. The QTD associated with each URB is removed from
+ * the schedule and freed. This function may be called when a disconnect is
+ * detected or when the HCD is being stopped.
+ */
+static void kill_all_urbs(dwc_otg_hcd_t * hcd)
+{
+	kill_urbs_in_qh_list(hcd, &hcd->non_periodic_sched_inactive);
+	kill_urbs_in_qh_list(hcd, &hcd->non_periodic_sched_active);
+	kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_inactive);
+	kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_ready);
+	kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_assigned);
+	kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_queued);
+}
+
+/**
+ * Start the connection timer.  An OTG host is required to display a
+ * message if the device does not connect within 10 seconds.  The
+ * timer is deleted if a port connect interrupt occurs before the
+ * timer expires.
+ */
+static void dwc_otg_hcd_start_connect_timer(dwc_otg_hcd_t * hcd)
+{
+	DWC_TIMER_SCHEDULE(hcd->conn_timer, 10000 /* 10 secs */ );
+}
+
+/**
+ * HCD Callback function for disconnect of the HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_session_start_cb(void *p)
+{
+	dwc_otg_hcd_t *dwc_otg_hcd;
+	DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
+	dwc_otg_hcd = p;
+	dwc_otg_hcd_start_connect_timer(dwc_otg_hcd);
+	return 1;
+}
+
+/**
+ * HCD Callback function for starting the HCD when A-Cable is
+ * connected.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_start_cb(void *p)
+{
+	dwc_otg_hcd_t *dwc_otg_hcd = p;
+	dwc_otg_core_if_t *core_if;
+	hprt0_data_t hprt0;
+
+	core_if = dwc_otg_hcd->core_if;
+
+	if (core_if->op_state == B_HOST) {
+		/*
+		 * Reset the port.  During a HNP mode switch the reset
+		 * needs to occur within 1ms and have a duration of at
+		 * least 50ms.
+		 */
+		hprt0.d32 = dwc_otg_read_hprt0(core_if);
+		hprt0.b.prtrst = 1;
+		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+	}
+	DWC_WORKQ_SCHEDULE_DELAYED(core_if->wq_otg,
+				   hcd_start_func, dwc_otg_hcd, 50,
+				   "start hcd");
+
+	return 1;
+}
+
+/**
+ * HCD Callback function for disconnect of the HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_disconnect_cb(void *p)
+{
+	gintsts_data_t intr;
+	dwc_otg_hcd_t *dwc_otg_hcd = p;
+
+	/*
+	 * Set status flags for the hub driver.
+	 */
+	dwc_otg_hcd->flags.b.port_connect_status_change = 1;
+	dwc_otg_hcd->flags.b.port_connect_status = 0;
+	if(fiq_enable)
+		local_fiq_disable();
+	/*
+	 * Shutdown any transfers in process by clearing the Tx FIFO Empty
+	 * interrupt mask and status bits and disabling subsequent host
+	 * channel interrupts.
+	 */
+	intr.d32 = 0;
+	intr.b.nptxfempty = 1;
+	intr.b.ptxfempty = 1;
+	intr.b.hcintr = 1;
+	DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk,
+			 intr.d32, 0);
+	DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintsts,
+			 intr.d32, 0);
+
+	del_timers(dwc_otg_hcd);
+
+	/*
+	 * Turn off the vbus power only if the core has transitioned to device
+	 * mode. If still in host mode, need to keep power on to detect a
+	 * reconnection.
+	 */
+	if (dwc_otg_is_device_mode(dwc_otg_hcd->core_if)) {
+		if (dwc_otg_hcd->core_if->op_state != A_SUSPEND) {
+			hprt0_data_t hprt0 = {.d32 = 0 };
+			DWC_PRINTF("Disconnect: PortPower off\n");
+			hprt0.b.prtpwr = 0;
+			DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0,
+					hprt0.d32);
+		}
+
+		dwc_otg_disable_host_interrupts(dwc_otg_hcd->core_if);
+	}
+
+	/* Respond with an error status to all URBs in the schedule. */
+	kill_all_urbs(dwc_otg_hcd);
+
+	if (dwc_otg_is_host_mode(dwc_otg_hcd->core_if)) {
+		/* Clean up any host channels that were in use. */
+		int num_channels;
+		int i;
+		dwc_hc_t *channel;
+		dwc_otg_hc_regs_t *hc_regs;
+		hcchar_data_t hcchar;
+
+		num_channels = dwc_otg_hcd->core_if->core_params->host_channels;
+
+		if (!dwc_otg_hcd->core_if->dma_enable) {
+			/* Flush out any channel requests in slave mode. */
+			for (i = 0; i < num_channels; i++) {
+				channel = dwc_otg_hcd->hc_ptr_array[i];
+				if (DWC_CIRCLEQ_EMPTY_ENTRY
+				    (channel, hc_list_entry)) {
+					hc_regs =
+					    dwc_otg_hcd->core_if->
+					    host_if->hc_regs[i];
+					hcchar.d32 =
+					    DWC_READ_REG32(&hc_regs->hcchar);
+					if (hcchar.b.chen) {
+						hcchar.b.chen = 0;
+						hcchar.b.chdis = 1;
+						hcchar.b.epdir = 0;
+						DWC_WRITE_REG32
+						    (&hc_regs->hcchar,
+						     hcchar.d32);
+					}
+				}
+			}
+		}
+
+		for (i = 0; i < num_channels; i++) {
+			channel = dwc_otg_hcd->hc_ptr_array[i];
+			if (DWC_CIRCLEQ_EMPTY_ENTRY(channel, hc_list_entry)) {
+				hc_regs =
+				    dwc_otg_hcd->core_if->host_if->hc_regs[i];
+				hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+				if (hcchar.b.chen) {
+					/* Halt the channel. */
+					hcchar.b.chdis = 1;
+					DWC_WRITE_REG32(&hc_regs->hcchar,
+							hcchar.d32);
+				}
+
+				dwc_otg_hc_cleanup(dwc_otg_hcd->core_if,
+						   channel);
+				DWC_CIRCLEQ_INSERT_TAIL
+				    (&dwc_otg_hcd->free_hc_list, channel,
+				     hc_list_entry);
+				/*
+				 * Added for Descriptor DMA to prevent channel double cleanup
+				 * in release_channel_ddma(). Which called from ep_disable
+				 * when device disconnect.
+				 */
+				channel->qh = NULL;
+			}
+		}
+		if(fiq_fsm_enable) {
+			for(i=0; i < 128; i++) {
+				dwc_otg_hcd->hub_port[i] = 0;
+			}
+		}
+
+	}
+
+	if(fiq_enable)
+		local_fiq_enable();
+
+	if (dwc_otg_hcd->fops->disconnect) {
+		dwc_otg_hcd->fops->disconnect(dwc_otg_hcd);
+	}
+
+	return 1;
+}
+
+/**
+ * HCD Callback function for stopping the HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_stop_cb(void *p)
+{
+	dwc_otg_hcd_t *dwc_otg_hcd = p;
+
+	DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
+	dwc_otg_hcd_stop(dwc_otg_hcd);
+	return 1;
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/**
+ * HCD Callback function for sleep of HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int dwc_otg_hcd_sleep_cb(void *p)
+{
+	dwc_otg_hcd_t *hcd = p;
+
+	dwc_otg_hcd_free_hc_from_lpm(hcd);
+
+	return 0;
+}
+#endif
+
+
+/**
+ * HCD Callback function for Remote Wakeup.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int dwc_otg_hcd_rem_wakeup_cb(void *p)
+{
+	dwc_otg_hcd_t *hcd = p;
+
+	if (hcd->core_if->lx_state == DWC_OTG_L2) {
+		hcd->flags.b.port_suspend_change = 1;
+	}
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	else {
+		hcd->flags.b.port_l1_change = 1;
+	}
+#endif
+	return 0;
+}
+
+/**
+ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
+ * stopped.
+ */
+void dwc_otg_hcd_stop(dwc_otg_hcd_t * hcd)
+{
+	hprt0_data_t hprt0 = {.d32 = 0 };
+
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD STOP\n");
+
+	/*
+	 * The root hub should be disconnected before this function is called.
+	 * The disconnect will clear the QTD lists (via ..._hcd_urb_dequeue)
+	 * and the QH lists (via ..._hcd_endpoint_disable).
+	 */
+
+	/* Turn off all host-specific interrupts. */
+	dwc_otg_disable_host_interrupts(hcd->core_if);
+
+	/* Turn off the vbus power */
+	DWC_PRINTF("PortPower off\n");
+	hprt0.b.prtpwr = 0;
+	DWC_WRITE_REG32(hcd->core_if->host_if->hprt0, hprt0.d32);
+	dwc_mdelay(1);
+}
+
+int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_t * hcd,
+			    dwc_otg_hcd_urb_t * dwc_otg_urb, void **ep_handle,
+			    int atomic_alloc)
+{
+	int retval = 0;
+	uint8_t needs_scheduling = 0;
+	dwc_otg_transaction_type_e tr_type;
+	dwc_otg_qtd_t *qtd;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	hprt0_data_t hprt0 = { .d32 = 0 };
+
+#ifdef DEBUG /* integrity checks (Broadcom) */
+	if (NULL == hcd->core_if) {
+		DWC_ERROR("**** DWC OTG HCD URB Enqueue - HCD has NULL core_if\n");
+		/* No longer connected. */
+		return -DWC_E_INVALID;
+	}
+#endif
+	if (!hcd->flags.b.port_connect_status) {
+		/* No longer connected. */
+		DWC_ERROR("Not connected\n");
+		return -DWC_E_NO_DEVICE;
+	}
+
+	/* Some core configurations cannot support LS traffic on a FS root port */
+	if ((hcd->fops->speed(hcd, dwc_otg_urb->priv) == USB_SPEED_LOW) &&
+		(hcd->core_if->hwcfg2.b.fs_phy_type == 1) &&
+		(hcd->core_if->hwcfg2.b.hs_phy_type == 1)) {
+			hprt0.d32 = DWC_READ_REG32(hcd->core_if->host_if->hprt0);
+			if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_FULL_SPEED) {
+				return -DWC_E_NO_DEVICE;
+			}
+	}
+
+	qtd = dwc_otg_hcd_qtd_create(dwc_otg_urb, atomic_alloc);
+	if (qtd == NULL) {
+		DWC_ERROR("DWC OTG HCD URB Enqueue failed creating QTD\n");
+		return -DWC_E_NO_MEMORY;
+	}
+#ifdef DEBUG /* integrity checks (Broadcom) */
+	if (qtd->urb == NULL) {
+		DWC_ERROR("**** DWC OTG HCD URB Enqueue created QTD with no URBs\n");
+		return -DWC_E_NO_MEMORY;
+	}
+	if (qtd->urb->priv == NULL) {
+		DWC_ERROR("**** DWC OTG HCD URB Enqueue created QTD URB with no URB handle\n");
+		return -DWC_E_NO_MEMORY;
+	}
+#endif
+	intr_mask.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->gintmsk);
+	if(!intr_mask.b.sofintr || fiq_enable) needs_scheduling = 1;
+	if((((dwc_otg_qh_t *)ep_handle)->ep_type == UE_BULK) && !(qtd->urb->flags & URB_GIVEBACK_ASAP))
+		/* Do not schedule SG transactions until qtd has URB_GIVEBACK_ASAP set */
+		needs_scheduling = 0;
+
+	retval = dwc_otg_hcd_qtd_add(qtd, hcd, (dwc_otg_qh_t **) ep_handle, atomic_alloc);
+            // creates a new queue in ep_handle if it doesn't exist already
+	if (retval < 0) {
+		DWC_ERROR("DWC OTG HCD URB Enqueue failed adding QTD. "
+			  "Error status %d\n", retval);
+		dwc_otg_hcd_qtd_free(qtd);
+		return retval;
+	}
+
+	if(needs_scheduling) {
+		tr_type = dwc_otg_hcd_select_transactions(hcd);
+		if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+			dwc_otg_hcd_queue_transactions(hcd, tr_type);
+		}
+	}
+	return retval;
+}
+
+int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_t * hcd,
+			    dwc_otg_hcd_urb_t * dwc_otg_urb)
+{
+	dwc_otg_qh_t *qh;
+	dwc_otg_qtd_t *urb_qtd;
+	BUG_ON(!hcd);
+	BUG_ON(!dwc_otg_urb);
+
+#ifdef DEBUG /* integrity checks (Broadcom) */
+
+	if (hcd == NULL) {
+		DWC_ERROR("**** DWC OTG HCD URB Dequeue has NULL HCD\n");
+		return -DWC_E_INVALID;
+	}
+	if (dwc_otg_urb == NULL) {
+		DWC_ERROR("**** DWC OTG HCD URB Dequeue has NULL URB\n");
+		return -DWC_E_INVALID;
+	}
+	if (dwc_otg_urb->qtd == NULL) {
+		DWC_ERROR("**** DWC OTG HCD URB Dequeue with NULL QTD\n");
+		return -DWC_E_INVALID;
+	}
+	urb_qtd = dwc_otg_urb->qtd;
+	BUG_ON(!urb_qtd);
+	if (urb_qtd->qh == NULL) {
+		DWC_ERROR("**** DWC OTG HCD URB Dequeue with QTD with NULL Q handler\n");
+		return -DWC_E_INVALID;
+	}
+#else
+	urb_qtd = dwc_otg_urb->qtd;
+	BUG_ON(!urb_qtd);
+#endif
+	qh = urb_qtd->qh;
+	BUG_ON(!qh);
+	if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+		if (urb_qtd->in_process) {
+			dump_channel_info(hcd, qh);
+		}
+	}
+#ifdef DEBUG /* integrity checks (Broadcom) */
+	if (hcd->core_if == NULL) {
+		DWC_ERROR("**** DWC OTG HCD URB Dequeue HCD has NULL core_if\n");
+		return -DWC_E_INVALID;
+	}
+#endif
+	if (urb_qtd->in_process && qh->channel) {
+		/* The QTD is in process (it has been assigned to a channel). */
+		if (hcd->flags.b.port_connect_status) {
+			int n = qh->channel->hc_num;
+			/*
+			 * If still connected (i.e. in host mode), halt the
+			 * channel so it can be used for other transfers. If
+			 * no longer connected, the host registers can't be
+			 * written to halt the channel since the core is in
+			 * device mode.
+			 */
+			/* In FIQ FSM mode, we need to shut down carefully.
+			 * The FIQ may attempt to restart a disabled channel */
+			if (fiq_fsm_enable && (hcd->fiq_state->channel[n].fsm != FIQ_PASSTHROUGH)) {
+				qh->channel->halt_status = DWC_OTG_HC_XFER_URB_DEQUEUE;
+				qh->channel->halt_pending = 1;
+				hcd->fiq_state->channel[n].fsm = FIQ_DEQUEUE_ISSUED;
+			} else {
+				dwc_otg_hc_halt(hcd->core_if, qh->channel,
+						DWC_OTG_HC_XFER_URB_DEQUEUE);
+			}
+		}
+	}
+
+	/*
+	 * Free the QTD and clean up the associated QH. Leave the QH in the
+	 * schedule if it has any remaining QTDs.
+	 */
+
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue - "
+                    "delete %sQueue handler\n",
+                    hcd->core_if->dma_desc_enable?"DMA ":"");
+	if (!hcd->core_if->dma_desc_enable) {
+		uint8_t b = urb_qtd->in_process;
+		dwc_otg_hcd_qtd_remove_and_free(hcd, urb_qtd, qh);
+		if (b) {
+			dwc_otg_hcd_qh_deactivate(hcd, qh, 0);
+			qh->channel = NULL;
+		} else if (DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+			dwc_otg_hcd_qh_remove(hcd, qh);
+		}
+	} else {
+		dwc_otg_hcd_qtd_remove_and_free(hcd, urb_qtd, qh);
+	}
+	return 0;
+}
+
+int dwc_otg_hcd_endpoint_disable(dwc_otg_hcd_t * hcd, void *ep_handle,
+				 int retry)
+{
+	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+	int retval = 0;
+	dwc_irqflags_t flags;
+
+	if (retry < 0) {
+		retval = -DWC_E_INVALID;
+		goto done;
+	}
+
+	if (!qh) {
+		retval = -DWC_E_INVALID;
+		goto done;
+	}
+
+	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+
+	while (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list) && retry) {
+		DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+		retry--;
+		dwc_msleep(5);
+		DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+	}
+
+	dwc_otg_hcd_qh_remove(hcd, qh);
+
+	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+	/*
+	 * Split dwc_otg_hcd_qh_remove_and_free() into qh_remove
+	 * and qh_free to prevent stack dump on DWC_DMA_FREE() with
+	 * irq_disabled (spinlock_irqsave) in dwc_otg_hcd_desc_list_free()
+	 * and dwc_otg_hcd_frame_list_alloc().
+	 */
+	dwc_otg_hcd_qh_free(hcd, qh);
+
+done:
+	return retval;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
+int dwc_otg_hcd_endpoint_reset(dwc_otg_hcd_t * hcd, void *ep_handle)
+{
+	int retval = 0;
+	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+	if (!qh)
+		return -DWC_E_INVALID;
+
+	qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+	return retval;
+}
+#endif
+
+/**
+ * HCD Callback structure for handling mode switching.
+ */
+static dwc_otg_cil_callbacks_t hcd_cil_callbacks = {
+	.start = dwc_otg_hcd_start_cb,
+	.stop = dwc_otg_hcd_stop_cb,
+	.disconnect = dwc_otg_hcd_disconnect_cb,
+	.session_start = dwc_otg_hcd_session_start_cb,
+	.resume_wakeup = dwc_otg_hcd_rem_wakeup_cb,
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	.sleep = dwc_otg_hcd_sleep_cb,
+#endif
+	.p = 0,
+};
+
+/**
+ * Reset tasklet function
+ */
+static void reset_tasklet_func(void *data)
+{
+	dwc_otg_hcd_t *dwc_otg_hcd = (dwc_otg_hcd_t *) data;
+	dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+	hprt0_data_t hprt0;
+
+	DWC_DEBUGPL(DBG_HCDV, "USB RESET tasklet called\n");
+
+	hprt0.d32 = dwc_otg_read_hprt0(core_if);
+	hprt0.b.prtrst = 1;
+	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+	dwc_mdelay(60);
+
+	hprt0.b.prtrst = 0;
+	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+	dwc_otg_hcd->flags.b.port_reset_change = 1;
+}
+
+static void completion_tasklet_func(void *ptr)
+{
+	dwc_otg_hcd_t *hcd = (dwc_otg_hcd_t *) ptr;
+	struct urb *urb;
+	urb_tq_entry_t *item;
+	dwc_irqflags_t flags;
+
+	/* This could just be spin_lock_irq */
+	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+	while (!DWC_TAILQ_EMPTY(&hcd->completed_urb_list)) {
+		item = DWC_TAILQ_FIRST(&hcd->completed_urb_list);
+		urb = item->urb;
+		DWC_TAILQ_REMOVE(&hcd->completed_urb_list, item,
+				urb_tq_entries);
+		DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+		DWC_FREE(item);
+
+		usb_hcd_giveback_urb(hcd->priv, urb, urb->status);
+
+
+		DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+	}
+	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+	return;
+}
+
+static void qh_list_free(dwc_otg_hcd_t * hcd, dwc_list_link_t * qh_list)
+{
+	dwc_list_link_t *item;
+	dwc_otg_qh_t *qh;
+	dwc_irqflags_t flags;
+
+	if (!qh_list->next) {
+		/* The list hasn't been initialized yet. */
+		return;
+	}
+	/*
+	 * Hold spinlock here. Not needed in that case if bellow
+	 * function is being called from ISR
+	 */
+	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+	/* Ensure there are no QTDs or URBs left. */
+	kill_urbs_in_qh_list(hcd, qh_list);
+	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+
+	DWC_LIST_FOREACH(item, qh_list) {
+		qh = DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
+		dwc_otg_hcd_qh_remove_and_free(hcd, qh);
+	}
+}
+
+/**
+ * Exit from Hibernation if Host did not detect SRP from connected SRP capable
+ * Device during SRP time by host power up.
+ */
+void dwc_otg_hcd_power_up(void *ptr)
+{
+	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
+
+	DWC_PRINTF("%s called\n", __FUNCTION__);
+
+	if (!core_if->hibernation_suspend) {
+		DWC_PRINTF("Already exited from Hibernation\n");
+		return;
+	}
+
+	/* Switch on the voltage to the core */
+	gpwrdn.b.pwrdnswtch = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Reset the core */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Disable power clamps */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnclmp = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	/* Remove reset the core signal */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pwrdnrstn = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
+	dwc_udelay(10);
+
+	/* Disable PMU interrupt */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuintsel = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	core_if->hibernation_suspend = 0;
+
+	/* Disable PMU */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.pmuactv = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+	dwc_udelay(10);
+
+	/* Enable VBUS */
+	gpwrdn.d32 = 0;
+	gpwrdn.b.dis_vbus = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
+
+	core_if->op_state = A_HOST;
+	dwc_otg_core_init(core_if);
+	dwc_otg_enable_global_interrupts(core_if);
+	cil_hcd_start(core_if);
+}
+
+void dwc_otg_cleanup_fiq_channel(dwc_otg_hcd_t *hcd, uint32_t num)
+{
+	struct fiq_channel_state *st = &hcd->fiq_state->channel[num];
+	struct fiq_dma_blob *blob = hcd->fiq_dmab;
+	int i;
+
+	st->fsm = FIQ_PASSTHROUGH;
+	st->hcchar_copy.d32 = 0;
+	st->hcsplt_copy.d32 = 0;
+	st->hcint_copy.d32 = 0;
+	st->hcintmsk_copy.d32 = 0;
+	st->hctsiz_copy.d32 = 0;
+	st->hcdma_copy.d32 = 0;
+	st->nr_errors = 0;
+	st->hub_addr = 0;
+	st->port_addr = 0;
+	st->expected_uframe = 0;
+	st->nrpackets = 0;
+	st->dma_info.index = 0;
+	for (i = 0; i < 6; i++)
+		st->dma_info.slot_len[i] = 255;
+	st->hs_isoc_info.index = 0;
+	st->hs_isoc_info.iso_desc = NULL;
+	st->hs_isoc_info.nrframes = 0;
+
+	DWC_MEMSET(&blob->channel[num].index[0], 0x6b, 1128);
+}
+
+/**
+ * Frees secondary storage associated with the dwc_otg_hcd structure contained
+ * in the struct usb_hcd field.
+ */
+static void dwc_otg_hcd_free(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+	int i;
+
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD FREE\n");
+
+	del_timers(dwc_otg_hcd);
+
+	/* Free memory for QH/QTD lists */
+	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_inactive);
+	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_active);
+	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_inactive);
+	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_ready);
+	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_assigned);
+	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_queued);
+
+	/* Free memory for the host channels. */
+	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+		dwc_hc_t *hc = dwc_otg_hcd->hc_ptr_array[i];
+
+#ifdef DEBUG
+		if (dwc_otg_hcd->core_if->hc_xfer_timer[i]) {
+			DWC_TIMER_FREE(dwc_otg_hcd->core_if->hc_xfer_timer[i]);
+		}
+#endif
+		if (hc != NULL) {
+			DWC_DEBUGPL(DBG_HCDV, "HCD Free channel #%i, hc=%p\n",
+				    i, hc);
+			DWC_FREE(hc);
+		}
+	}
+
+	if (dwc_otg_hcd->core_if->dma_enable) {
+		if (dwc_otg_hcd->status_buf_dma) {
+			DWC_DMA_FREE(DWC_OTG_HCD_STATUS_BUF_SIZE,
+				     dwc_otg_hcd->status_buf,
+				     dwc_otg_hcd->status_buf_dma);
+		}
+	} else if (dwc_otg_hcd->status_buf != NULL) {
+		DWC_FREE(dwc_otg_hcd->status_buf);
+	}
+	DWC_SPINLOCK_FREE(dwc_otg_hcd->channel_lock);
+	DWC_SPINLOCK_FREE(dwc_otg_hcd->lock);
+	/* Set core_if's lock pointer to NULL */
+	dwc_otg_hcd->core_if->lock = NULL;
+
+	DWC_TIMER_FREE(dwc_otg_hcd->conn_timer);
+	DWC_TASK_FREE(dwc_otg_hcd->reset_tasklet);
+	DWC_TASK_FREE(dwc_otg_hcd->completion_tasklet);
+	DWC_FREE(dwc_otg_hcd->fiq_state);
+
+#ifdef DWC_DEV_SRPCAP
+	if (dwc_otg_hcd->core_if->power_down == 2 &&
+	    dwc_otg_hcd->core_if->pwron_timer) {
+		DWC_TIMER_FREE(dwc_otg_hcd->core_if->pwron_timer);
+	}
+#endif
+	DWC_FREE(dwc_otg_hcd);
+}
+
+int init_hcd_usecs(dwc_otg_hcd_t *_hcd);
+
+int dwc_otg_hcd_init(dwc_otg_hcd_t * hcd, dwc_otg_core_if_t * core_if)
+{
+	int retval = 0;
+	int num_channels;
+	int i;
+	dwc_hc_t *channel;
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK))
+	DWC_SPINLOCK_ALLOC_LINUX_DEBUG(hcd->lock);
+	DWC_SPINLOCK_ALLOC_LINUX_DEBUG(hcd->channel_lock);
+#else
+	hcd->lock = DWC_SPINLOCK_ALLOC();
+	hcd->channel_lock = DWC_SPINLOCK_ALLOC();
+#endif
+        DWC_DEBUGPL(DBG_HCDV, "init of HCD %p given core_if %p\n",
+                    hcd, core_if);
+	if (!hcd->lock) {
+		DWC_ERROR("Could not allocate lock for pcd");
+		DWC_FREE(hcd);
+		retval = -DWC_E_NO_MEMORY;
+		goto out;
+	}
+	hcd->core_if = core_if;
+
+	/* Register the HCD CIL Callbacks */
+	dwc_otg_cil_register_hcd_callbacks(hcd->core_if,
+					   &hcd_cil_callbacks, hcd);
+
+	/* Initialize the non-periodic schedule. */
+	DWC_LIST_INIT(&hcd->non_periodic_sched_inactive);
+	DWC_LIST_INIT(&hcd->non_periodic_sched_active);
+
+	/* Initialize the periodic schedule. */
+	DWC_LIST_INIT(&hcd->periodic_sched_inactive);
+	DWC_LIST_INIT(&hcd->periodic_sched_ready);
+	DWC_LIST_INIT(&hcd->periodic_sched_assigned);
+	DWC_LIST_INIT(&hcd->periodic_sched_queued);
+	DWC_TAILQ_INIT(&hcd->completed_urb_list);
+	/*
+	 * Create a host channel descriptor for each host channel implemented
+	 * in the controller. Initialize the channel descriptor array.
+	 */
+	DWC_CIRCLEQ_INIT(&hcd->free_hc_list);
+	num_channels = hcd->core_if->core_params->host_channels;
+	DWC_MEMSET(hcd->hc_ptr_array, 0, sizeof(hcd->hc_ptr_array));
+	for (i = 0; i < num_channels; i++) {
+		channel = DWC_ALLOC(sizeof(dwc_hc_t));
+		if (channel == NULL) {
+			retval = -DWC_E_NO_MEMORY;
+			DWC_ERROR("%s: host channel allocation failed\n",
+				  __func__);
+			dwc_otg_hcd_free(hcd);
+			goto out;
+		}
+		channel->hc_num = i;
+		hcd->hc_ptr_array[i] = channel;
+#ifdef DEBUG
+		hcd->core_if->hc_xfer_timer[i] =
+		    DWC_TIMER_ALLOC("hc timer", hc_xfer_timeout,
+				    &hcd->core_if->hc_xfer_info[i]);
+#endif
+		DWC_DEBUGPL(DBG_HCDV, "HCD Added channel #%d, hc=%p\n", i,
+			    channel);
+	}
+
+	if (fiq_enable) {
+		hcd->fiq_state = DWC_ALLOC(sizeof(struct fiq_state) + (sizeof(struct fiq_channel_state) * num_channels));
+		if (!hcd->fiq_state) {
+			retval = -DWC_E_NO_MEMORY;
+			DWC_ERROR("%s: cannot allocate fiq_state structure\n", __func__);
+			dwc_otg_hcd_free(hcd);
+			goto out;
+		}
+		DWC_MEMSET(hcd->fiq_state, 0, (sizeof(struct fiq_state) + (sizeof(struct fiq_channel_state) * num_channels)));
+
+		for (i = 0; i < num_channels; i++) {
+			hcd->fiq_state->channel[i].fsm = FIQ_PASSTHROUGH;
+		}
+		hcd->fiq_state->dummy_send = DWC_ALLOC_ATOMIC(16);
+
+		hcd->fiq_stack = DWC_ALLOC(sizeof(struct fiq_stack));
+		if (!hcd->fiq_stack) {
+			retval = -DWC_E_NO_MEMORY;
+			DWC_ERROR("%s: cannot allocate fiq_stack structure\n", __func__);
+			dwc_otg_hcd_free(hcd);
+			goto out;
+		}
+		hcd->fiq_stack->magic1 = 0xDEADBEEF;
+		hcd->fiq_stack->magic2 = 0xD00DFEED;
+		hcd->fiq_state->gintmsk_saved.d32 = ~0;
+		hcd->fiq_state->haintmsk_saved.b2.chint = ~0;
+
+		/* This bit is terrible and uses no API, but necessary. The FIQ has no concept of DMA pools
+		 * (and if it did, would be a lot slower). This allocates a chunk of memory (~9kiB for 8 host channels)
+		 * for use as transaction bounce buffers in a 2-D array. Our access into this chunk is done by some
+		 * moderately readable array casts.
+		 */
+		hcd->fiq_dmab = DWC_DMA_ALLOC((sizeof(struct fiq_dma_channel) * num_channels), &hcd->fiq_state->dma_base);
+		DWC_WARN("FIQ DMA bounce buffers: virt = 0x%08x dma = 0x%08x len=%d",
+				(unsigned int)hcd->fiq_dmab, (unsigned int)hcd->fiq_state->dma_base,
+				sizeof(struct fiq_dma_channel) * num_channels);
+
+		DWC_MEMSET(hcd->fiq_dmab, 0x6b, 9024);
+
+		/* pointer for debug in fiq_print */
+		hcd->fiq_state->fiq_dmab = hcd->fiq_dmab;
+		if (fiq_fsm_enable) {
+			int i;
+			for (i=0; i < hcd->core_if->core_params->host_channels; i++) {
+				dwc_otg_cleanup_fiq_channel(hcd, i);
+			}
+			DWC_PRINTF("FIQ FSM acceleration enabled for :\n%s%s%s%s",
+				(fiq_fsm_mask & 0x1) ? "Non-periodic Split Transactions\n" : "",
+				(fiq_fsm_mask & 0x2) ? "Periodic Split Transactions\n" : "",
+				(fiq_fsm_mask & 0x4) ? "High-Speed Isochronous Endpoints\n" : "",
+				(fiq_fsm_mask & 0x8) ? "Interrupt/Control Split Transaction hack enabled\n" : "");
+		}
+	}
+
+	/* Initialize the Connection timeout timer. */
+	hcd->conn_timer = DWC_TIMER_ALLOC("Connection timer",
+					  dwc_otg_hcd_connect_timeout, 0);
+
+	printk(KERN_DEBUG "dwc_otg: Microframe scheduler %s\n", microframe_schedule ? "enabled":"disabled");
+	if (microframe_schedule)
+		init_hcd_usecs(hcd);
+
+	/* Initialize reset tasklet. */
+	hcd->reset_tasklet = DWC_TASK_ALLOC("reset_tasklet", reset_tasklet_func, hcd);
+
+	hcd->completion_tasklet = DWC_TASK_ALLOC("completion_tasklet",
+						completion_tasklet_func, hcd);
+#ifdef DWC_DEV_SRPCAP
+	if (hcd->core_if->power_down == 2) {
+		/* Initialize Power on timer for Host power up in case hibernation */
+		hcd->core_if->pwron_timer = DWC_TIMER_ALLOC("PWRON TIMER",
+									dwc_otg_hcd_power_up, core_if);
+	}
+#endif
+
+	/*
+	 * Allocate space for storing data on status transactions. Normally no
+	 * data is sent, but this space acts as a bit bucket. This must be
+	 * done after usb_add_hcd since that function allocates the DMA buffer
+	 * pool.
+	 */
+	if (hcd->core_if->dma_enable) {
+		hcd->status_buf =
+		    DWC_DMA_ALLOC(DWC_OTG_HCD_STATUS_BUF_SIZE,
+				  &hcd->status_buf_dma);
+	} else {
+		hcd->status_buf = DWC_ALLOC(DWC_OTG_HCD_STATUS_BUF_SIZE);
+	}
+	if (!hcd->status_buf) {
+		retval = -DWC_E_NO_MEMORY;
+		DWC_ERROR("%s: status_buf allocation failed\n", __func__);
+		dwc_otg_hcd_free(hcd);
+		goto out;
+	}
+
+	hcd->otg_port = 1;
+	hcd->frame_list = NULL;
+	hcd->frame_list_dma = 0;
+	hcd->periodic_qh_count = 0;
+
+	DWC_MEMSET(hcd->hub_port, 0, sizeof(hcd->hub_port));
+#ifdef FIQ_DEBUG
+	DWC_MEMSET(hcd->hub_port_alloc, -1, sizeof(hcd->hub_port_alloc));
+#endif
+
+out:
+	return retval;
+}
+
+void dwc_otg_hcd_remove(dwc_otg_hcd_t * hcd)
+{
+	/* Turn off all host-specific interrupts. */
+	dwc_otg_disable_host_interrupts(hcd->core_if);
+
+	dwc_otg_hcd_free(hcd);
+}
+
+/**
+ * Initializes dynamic portions of the DWC_otg HCD state.
+ */
+static void dwc_otg_hcd_reinit(dwc_otg_hcd_t * hcd)
+{
+	int num_channels;
+	int i;
+	dwc_hc_t *channel;
+	dwc_hc_t *channel_tmp;
+
+	hcd->flags.d32 = 0;
+
+	hcd->non_periodic_qh_ptr = &hcd->non_periodic_sched_active;
+	if (!microframe_schedule) {
+		hcd->non_periodic_channels = 0;
+		hcd->periodic_channels = 0;
+	} else {
+		hcd->available_host_channels = hcd->core_if->core_params->host_channels;
+	}
+	/*
+	 * Put all channels in the free channel list and clean up channel
+	 * states.
+	 */
+	DWC_CIRCLEQ_FOREACH_SAFE(channel, channel_tmp,
+				 &hcd->free_hc_list, hc_list_entry) {
+		DWC_CIRCLEQ_REMOVE(&hcd->free_hc_list, channel, hc_list_entry);
+	}
+
+	num_channels = hcd->core_if->core_params->host_channels;
+	for (i = 0; i < num_channels; i++) {
+		channel = hcd->hc_ptr_array[i];
+		DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, channel,
+					hc_list_entry);
+		dwc_otg_hc_cleanup(hcd->core_if, channel);
+	}
+
+	/* Initialize the DWC core for host mode operation. */
+	dwc_otg_core_host_init(hcd->core_if);
+
+	/* Set core_if's lock pointer to the hcd->lock */
+	hcd->core_if->lock = hcd->lock;
+}
+
+/**
+ * Assigns transactions from a QTD to a free host channel and initializes the
+ * host channel to perform the transactions. The host channel is removed from
+ * the free list.
+ *
+ * @param hcd The HCD state structure.
+ * @param qh Transactions from the first QTD for this QH are selected and
+ * assigned to a free host channel.
+ */
+static void assign_and_init_hc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	dwc_hc_t *hc;
+	dwc_otg_qtd_t *qtd;
+	dwc_otg_hcd_urb_t *urb;
+	void* ptr = NULL;
+	uint32_t intr_enable;
+	unsigned long flags;
+	gintmsk_data_t gintmsk = { .d32 = 0, };
+
+	qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
+
+	urb = qtd->urb;
+
+	DWC_DEBUGPL(DBG_HCDV, "%s(%p,%p) - urb %x, actual_length %d\n", __func__, hcd, qh, (unsigned int)urb, urb->actual_length);
+
+	if (((urb->actual_length < 0) || (urb->actual_length > urb->length)) && !dwc_otg_hcd_is_pipe_in(&urb->pipe_info))
+		urb->actual_length = urb->length;
+
+
+	hc = DWC_CIRCLEQ_FIRST(&hcd->free_hc_list);
+
+	/* Remove the host channel from the free list. */
+	DWC_CIRCLEQ_REMOVE_INIT(&hcd->free_hc_list, hc, hc_list_entry);
+
+	qh->channel = hc;
+
+	qtd->in_process = 1;
+
+	/*
+	 * Use usb_pipedevice to determine device address. This address is
+	 * 0 before the SET_ADDRESS command and the correct address afterward.
+	 */
+	hc->dev_addr = dwc_otg_hcd_get_dev_addr(&urb->pipe_info);
+	hc->ep_num = dwc_otg_hcd_get_ep_num(&urb->pipe_info);
+	hc->speed = qh->dev_speed;
+	hc->max_packet = dwc_max_packet(qh->maxp);
+
+	hc->xfer_started = 0;
+	hc->halt_status = DWC_OTG_HC_XFER_NO_HALT_STATUS;
+	hc->error_state = (qtd->error_count > 0);
+	hc->halt_on_queue = 0;
+	hc->halt_pending = 0;
+	hc->requests = 0;
+
+	/*
+	 * The following values may be modified in the transfer type section
+	 * below. The xfer_len value may be reduced when the transfer is
+	 * started to accommodate the max widths of the XferSize and PktCnt
+	 * fields in the HCTSIZn register.
+	 */
+
+	hc->ep_is_in = (dwc_otg_hcd_is_pipe_in(&urb->pipe_info) != 0);
+	if (hc->ep_is_in) {
+		hc->do_ping = 0;
+	} else {
+		hc->do_ping = qh->ping_state;
+	}
+
+	hc->data_pid_start = qh->data_toggle;
+	hc->multi_count = 1;
+
+	if (hcd->core_if->dma_enable) {
+		hc->xfer_buff = (uint8_t *) urb->dma + urb->actual_length;
+
+		/* For non-dword aligned case */
+		if (((unsigned long)hc->xfer_buff & 0x3)
+		    && !hcd->core_if->dma_desc_enable) {
+			ptr = (uint8_t *) urb->buf + urb->actual_length;
+		}
+	} else {
+		hc->xfer_buff = (uint8_t *) urb->buf + urb->actual_length;
+	}
+	hc->xfer_len = urb->length - urb->actual_length;
+	hc->xfer_count = 0;
+
+	/*
+	 * Set the split attributes
+	 */
+	hc->do_split = 0;
+	if (qh->do_split) {
+		uint32_t hub_addr, port_addr;
+		hc->do_split = 1;
+		hc->xact_pos = qtd->isoc_split_pos;
+		/* We don't need to do complete splits anymore */
+//		if(fiq_fsm_enable)
+		if (0)
+			hc->complete_split = qtd->complete_split = 0;
+		else
+			hc->complete_split = qtd->complete_split;
+
+		hcd->fops->hub_info(hcd, urb->priv, &hub_addr, &port_addr);
+		hc->hub_addr = (uint8_t) hub_addr;
+		hc->port_addr = (uint8_t) port_addr;
+	}
+
+	switch (dwc_otg_hcd_get_pipe_type(&urb->pipe_info)) {
+	case UE_CONTROL:
+		hc->ep_type = DWC_OTG_EP_TYPE_CONTROL;
+		switch (qtd->control_phase) {
+		case DWC_OTG_CONTROL_SETUP:
+			DWC_DEBUGPL(DBG_HCDV, "  Control setup transaction\n");
+			hc->do_ping = 0;
+			hc->ep_is_in = 0;
+			hc->data_pid_start = DWC_OTG_HC_PID_SETUP;
+			if (hcd->core_if->dma_enable) {
+				hc->xfer_buff = (uint8_t *) urb->setup_dma;
+			} else {
+				hc->xfer_buff = (uint8_t *) urb->setup_packet;
+			}
+			hc->xfer_len = 8;
+			ptr = NULL;
+			break;
+		case DWC_OTG_CONTROL_DATA:
+			DWC_DEBUGPL(DBG_HCDV, "  Control data transaction\n");
+			hc->data_pid_start = qtd->data_toggle;
+			break;
+		case DWC_OTG_CONTROL_STATUS:
+			/*
+			 * Direction is opposite of data direction or IN if no
+			 * data.
+			 */
+			DWC_DEBUGPL(DBG_HCDV, "  Control status transaction\n");
+			if (urb->length == 0) {
+				hc->ep_is_in = 1;
+			} else {
+				hc->ep_is_in =
+				    dwc_otg_hcd_is_pipe_out(&urb->pipe_info);
+			}
+			if (hc->ep_is_in) {
+				hc->do_ping = 0;
+			}
+
+			hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
+
+			hc->xfer_len = 0;
+			if (hcd->core_if->dma_enable) {
+				hc->xfer_buff = (uint8_t *) hcd->status_buf_dma;
+			} else {
+				hc->xfer_buff = (uint8_t *) hcd->status_buf;
+			}
+			ptr = NULL;
+			break;
+		}
+		break;
+	case UE_BULK:
+		hc->ep_type = DWC_OTG_EP_TYPE_BULK;
+		break;
+	case UE_INTERRUPT:
+		hc->ep_type = DWC_OTG_EP_TYPE_INTR;
+		break;
+	case UE_ISOCHRONOUS:
+		{
+			struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+
+			hc->ep_type = DWC_OTG_EP_TYPE_ISOC;
+
+			if (hcd->core_if->dma_desc_enable)
+				break;
+
+			frame_desc = &urb->iso_descs[qtd->isoc_frame_index];
+
+			frame_desc->status = 0;
+
+			if (hcd->core_if->dma_enable) {
+				hc->xfer_buff = (uint8_t *) urb->dma;
+			} else {
+				hc->xfer_buff = (uint8_t *) urb->buf;
+			}
+			hc->xfer_buff +=
+			    frame_desc->offset + qtd->isoc_split_offset;
+			hc->xfer_len =
+			    frame_desc->length - qtd->isoc_split_offset;
+
+			/* For non-dword aligned buffers */
+			if (((unsigned long)hc->xfer_buff & 0x3)
+			    && hcd->core_if->dma_enable) {
+				ptr =
+				    (uint8_t *) urb->buf + frame_desc->offset +
+				    qtd->isoc_split_offset;
+			} else
+				ptr = NULL;
+
+			if (hc->xact_pos == DWC_HCSPLIT_XACTPOS_ALL) {
+				if (hc->xfer_len <= 188) {
+					hc->xact_pos = DWC_HCSPLIT_XACTPOS_ALL;
+				} else {
+					hc->xact_pos =
+					    DWC_HCSPLIT_XACTPOS_BEGIN;
+				}
+			}
+		}
+		break;
+	}
+	/* non DWORD-aligned buffer case */
+	if (ptr) {
+		uint32_t buf_size;
+		if (hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+			buf_size = hcd->core_if->core_params->max_transfer_size;
+		} else {
+			buf_size = 4096;
+		}
+		if (!qh->dw_align_buf) {
+			qh->dw_align_buf = DWC_DMA_ALLOC_ATOMIC(buf_size,
+							 &qh->dw_align_buf_dma);
+			if (!qh->dw_align_buf) {
+				DWC_ERROR
+				    ("%s: Failed to allocate memory to handle "
+				     "non-dword aligned buffer case\n",
+				     __func__);
+				return;
+			}
+		}
+		if (!hc->ep_is_in) {
+			dwc_memcpy(qh->dw_align_buf, ptr, hc->xfer_len);
+		}
+		hc->align_buff = qh->dw_align_buf_dma;
+	} else {
+		hc->align_buff = 0;
+	}
+
+	if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+	    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+		/*
+		 * This value may be modified when the transfer is started to
+		 * reflect the actual transfer length.
+		 */
+		hc->multi_count = dwc_hb_mult(qh->maxp);
+	}
+
+	if (hcd->core_if->dma_desc_enable)
+		hc->desc_list_addr = qh->desc_list_dma;
+
+	dwc_otg_hc_init(hcd->core_if, hc);
+
+	local_irq_save(flags);
+	local_fiq_disable();
+	fiq_fsm_spin_lock(&hcd->fiq_state->lock);
+	/* Enable the top level host channel interrupt. */
+	intr_enable = (1 << hc->hc_num);
+	DWC_MODIFY_REG32(&hcd->core_if->host_if->host_global_regs->haintmsk, 0, intr_enable);
+
+	/* Make sure host channel interrupts are enabled. */
+	gintmsk.b.hcintr = 1;
+	DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
+	fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
+	local_fiq_enable();
+	local_irq_restore(flags);
+	hc->qh = qh;
+}
+
+
+/**
+ * fiq_fsm_transaction_suitable() - Test a QH for compatibility with the FIQ
+ * @qh:	pointer to the endpoint's queue head
+ *
+ * Transaction start/end control flow is grafted onto the existing dwc_otg
+ * mechanisms, to avoid spaghettifying the functions more than they already are.
+ * This function's eligibility check is altered by debug parameter.
+ *
+ * Returns: 0 for unsuitable, 1 implies the FIQ can be enabled for this transaction.
+ */
+
+int fiq_fsm_transaction_suitable(dwc_otg_qh_t *qh)
+{
+	if (qh->do_split) {
+		switch (qh->ep_type) {
+		case UE_CONTROL:
+		case UE_BULK:
+			if (fiq_fsm_mask & (1 << 0))
+				return 1;
+			break;
+		case UE_INTERRUPT:
+		case UE_ISOCHRONOUS:
+			if (fiq_fsm_mask & (1 << 1))
+				return 1;
+			break;
+		default:
+			break;
+		}
+	} else if (qh->ep_type == UE_ISOCHRONOUS) {
+		if (fiq_fsm_mask & (1 << 2)) {
+			/* HS ISOCH support. We test for compatibility:
+			 * - DWORD aligned buffers
+			 * - Must be at least 2 transfers (otherwise pointless to use the FIQ)
+			 * If yes, then the fsm enqueue function will handle the state machine setup.
+			 */
+			dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
+			dwc_otg_hcd_urb_t *urb = qtd->urb;
+			struct dwc_otg_hcd_iso_packet_desc (*iso_descs)[0] = &urb->iso_descs;
+			int nr_iso_frames = urb->packet_count;
+			int i;
+			uint32_t ptr;
+
+			if (nr_iso_frames < 2)
+				return 0;
+			for (i = 0; i < nr_iso_frames; i++) {
+				ptr = urb->dma + iso_descs[i]->offset;
+				if (ptr & 0x3) {
+					printk_ratelimited("%s: Non-Dword aligned isochronous frame offset."
+							" Cannot queue FIQ-accelerated transfer to device %d endpoint %d\n",
+							__FUNCTION__, qh->channel->dev_addr, qh->channel->ep_num);
+					return 0;
+				}
+			}
+			return 1;
+		}
+	}
+	return 0;
+}
+
+/**
+ * fiq_fsm_setup_periodic_dma() - Set up DMA bounce buffers
+ * @hcd: Pointer to the dwc_otg_hcd struct
+ * @qh: Pointer to the endpoint's queue head
+ *
+ * Periodic split transactions are transmitted modulo 188 bytes.
+ * This necessitates slicing data up into buckets for isochronous out
+ * and fixing up the DMA address for all IN transfers.
+ *
+ * Returns 1 if the DMA bounce buffers have been used, 0 if the default
+ * HC buffer has been used.
+ */
+int fiq_fsm_setup_periodic_dma(dwc_otg_hcd_t *hcd, struct fiq_channel_state *st, dwc_otg_qh_t *qh)
+ {
+	int frame_length, i = 0;
+	uint8_t *ptr = NULL;
+	dwc_hc_t *hc = qh->channel;
+	struct fiq_dma_blob *blob;
+	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+
+	for (i = 0; i < 6; i++) {
+		st->dma_info.slot_len[i] = 255;
+	}
+	st->dma_info.index = 0;
+	i = 0;
+	if (hc->ep_is_in) {
+		/*
+		 * Set dma_regs to bounce buffer. FIQ will update the
+		 * state depending on transaction progress.
+		 */
+		blob = (struct fiq_dma_blob *) hcd->fiq_state->dma_base;
+		st->hcdma_copy.d32 = (uint32_t) &blob->channel[hc->hc_num].index[0].buf[0];
+		/* Calculate the max number of CSPLITS such that the FIQ can time out
+		 * a transaction if it fails.
+		 */
+		frame_length = st->hcchar_copy.b.mps;
+		do {
+			i++;
+			frame_length -= 188;
+		} while (frame_length >= 0);
+		st->nrpackets = i;
+		return 1;
+	} else {
+		if (qh->ep_type == UE_ISOCHRONOUS) {
+
+			dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
+
+			frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
+			frame_length = frame_desc->length;
+
+			/* Virtual address for bounce buffers */
+			blob = hcd->fiq_dmab;
+
+			ptr = qtd->urb->buf + frame_desc->offset;
+			if (frame_length == 0) {
+				/*
+				 * for isochronous transactions, we must still transmit a packet
+				 * even if the length is zero.
+				 */
+				st->dma_info.slot_len[0] = 0;
+				st->nrpackets = 1;
+			} else {
+				do {
+					if (frame_length <= 188) {
+						dwc_memcpy(&blob->channel[hc->hc_num].index[i].buf[0], ptr, frame_length);
+						st->dma_info.slot_len[i] = frame_length;
+						ptr += frame_length;
+					} else {
+						dwc_memcpy(&blob->channel[hc->hc_num].index[i].buf[0], ptr, 188);
+						st->dma_info.slot_len[i] = 188;
+						ptr += 188;
+					}
+					i++;
+					frame_length -= 188;
+				} while (frame_length > 0);
+				st->nrpackets = i;
+			}
+			ptr = qtd->urb->buf + frame_desc->offset;
+			/* Point the HC at the DMA address of the bounce buffers */
+			blob = (struct fiq_dma_blob *) hcd->fiq_state->dma_base;
+			st->hcdma_copy.d32 = (uint32_t) &blob->channel[hc->hc_num].index[0].buf[0];
+			
+			/* fixup xfersize to the actual packet size */
+			st->hctsiz_copy.b.pid = 0;
+			st->hctsiz_copy.b.xfersize = st->dma_info.slot_len[0];
+			return 1;
+		} else {
+			/* For interrupt, single OUT packet required, goes in the SSPLIT from hc_buff. */
+			return 0;
+		}
+	}
+}
+
+/*
+ * Pushing a periodic request into the queue near the EOF1 point
+ * in a microframe causes erroneous behaviour (frmovrun) interrupt.
+ * Usually, the request goes out on the bus causing a transfer but
+ * the core does not transfer the data to memory.
+ * This guard interval (in number of 60MHz clocks) is required which
+ * must cater for CPU latency between reading the value and enabling
+ * the channel.
+ */
+#define PERIODIC_FRREM_BACKOFF 1000
+
+int fiq_fsm_queue_isoc_transaction(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+	dwc_hc_t *hc = qh->channel;
+	dwc_otg_hc_regs_t *hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
+	dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
+	int frame;
+	struct fiq_channel_state *st = &hcd->fiq_state->channel[hc->hc_num];
+	int xfer_len, nrpackets;
+	hcdma_data_t hcdma;
+	hfnum_data_t hfnum;
+
+	if (st->fsm != FIQ_PASSTHROUGH)
+		return 0;
+
+	st->nr_errors = 0;
+
+	st->hcchar_copy.d32 = 0;
+	st->hcchar_copy.b.mps = hc->max_packet;
+	st->hcchar_copy.b.epdir = hc->ep_is_in;
+	st->hcchar_copy.b.devaddr = hc->dev_addr;
+	st->hcchar_copy.b.epnum = hc->ep_num;
+	st->hcchar_copy.b.eptype = hc->ep_type;
+
+	st->hcintmsk_copy.b.chhltd = 1;
+
+	frame = dwc_otg_hcd_get_frame_number(hcd);
+	st->hcchar_copy.b.oddfrm = (frame & 0x1) ? 0 : 1;
+
+	st->hcchar_copy.b.lspddev = 0;
+	/* Enable the channel later as a final register write. */
+
+	st->hcsplt_copy.d32 = 0;
+
+	st->hs_isoc_info.iso_desc = (struct dwc_otg_hcd_iso_packet_desc *) &qtd->urb->iso_descs;
+	st->hs_isoc_info.nrframes = qtd->urb->packet_count;
+	/* grab the next DMA address offset from the array */
+	st->hcdma_copy.d32 = qtd->urb->dma;
+	hcdma.d32 = st->hcdma_copy.d32 + st->hs_isoc_info.iso_desc[0].offset;
+
+	/* We need to set multi_count. This is a bit tricky - has to be set per-transaction as
+	 * the core needs to be told to send the correct number. Caution: for IN transfers,
+	 * this is always set to the maximum size of the endpoint. */
+	xfer_len = st->hs_isoc_info.iso_desc[0].length;
+	nrpackets = (xfer_len + st->hcchar_copy.b.mps - 1) / st->hcchar_copy.b.mps;
+	if (nrpackets == 0)
+		nrpackets = 1;
+	st->hcchar_copy.b.multicnt = nrpackets;
+	st->hctsiz_copy.b.pktcnt = nrpackets;
+
+	/* Initial PID also needs to be set */
+	if (st->hcchar_copy.b.epdir == 0) {
+		st->hctsiz_copy.b.xfersize = xfer_len;
+		switch (st->hcchar_copy.b.multicnt) {
+		case 1:
+			st->hctsiz_copy.b.pid = DWC_PID_DATA0;
+			break;
+		case 2:
+		case 3:
+			st->hctsiz_copy.b.pid = DWC_PID_MDATA;
+			break;
+		}
+
+	} else {
+		st->hctsiz_copy.b.xfersize = nrpackets * st->hcchar_copy.b.mps;
+		switch (st->hcchar_copy.b.multicnt) {
+		case 1:
+			st->hctsiz_copy.b.pid = DWC_PID_DATA0;
+			break;
+		case 2:
+			st->hctsiz_copy.b.pid = DWC_PID_DATA1;
+			break;
+		case 3:
+			st->hctsiz_copy.b.pid = DWC_PID_DATA2;
+			break;
+		}
+	}
+
+	fiq_print(FIQDBG_INT, hcd->fiq_state, "FSMQ  %01d ", hc->hc_num);
+	fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcchar_copy.d32);
+	fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hctsiz_copy.d32);
+	fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcdma_copy.d32);
+	hfnum.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hfnum);
+	local_fiq_disable();
+	fiq_fsm_spin_lock(&hcd->fiq_state->lock);
+	DWC_WRITE_REG32(&hc_regs->hctsiz, st->hctsiz_copy.d32);
+	DWC_WRITE_REG32(&hc_regs->hcsplt, st->hcsplt_copy.d32);
+	DWC_WRITE_REG32(&hc_regs->hcdma, st->hcdma_copy.d32);
+	DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
+	DWC_WRITE_REG32(&hc_regs->hcintmsk, st->hcintmsk_copy.d32);
+	if (hfnum.b.frrem < PERIODIC_FRREM_BACKOFF) {
+		/* Prevent queueing near EOF1. Bad things happen if a periodic
+		 * split transaction is queued very close to EOF.
+		 */
+		st->fsm = FIQ_HS_ISOC_SLEEPING;
+	} else {
+		st->fsm = FIQ_HS_ISOC_TURBO;
+		st->hcchar_copy.b.chen = 1;
+		DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
+	}
+	mb();
+	st->hcchar_copy.b.chen = 0;
+	fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
+	local_fiq_enable();
+	return 0;
+}
+
+
+/**
+ * fiq_fsm_queue_split_transaction() - Set up a host channel and FIQ state
+ * @hcd: Pointer to the dwc_otg_hcd struct
+ * @qh: Pointer to the endpoint's queue head
+ *
+ * This overrides the dwc_otg driver's normal method of queueing a transaction.
+ * Called from dwc_otg_hcd_queue_transactions(), this performs specific setup
+ * for the nominated host channel.
+ *
+ * For periodic transfers, it also peeks at the FIQ state to see if an immediate
+ * start is possible. If not, then the FIQ is left to start the transfer.
+ */
+int fiq_fsm_queue_split_transaction(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+	int start_immediate = 1, i;
+	hfnum_data_t hfnum;
+	dwc_hc_t *hc = qh->channel;
+	dwc_otg_hc_regs_t *hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
+	/* Program HC registers, setup FIQ_state, examine FIQ if periodic, start transfer (not if uframe 5) */
+	int hub_addr, port_addr, frame, uframe;
+	struct fiq_channel_state *st = &hcd->fiq_state->channel[hc->hc_num];
+
+	if (st->fsm != FIQ_PASSTHROUGH)
+		return 0;
+	st->nr_errors = 0;
+
+	st->hcchar_copy.d32 = 0;
+	st->hcchar_copy.b.mps = hc->max_packet;
+	st->hcchar_copy.b.epdir = hc->ep_is_in;
+	st->hcchar_copy.b.devaddr = hc->dev_addr;
+	st->hcchar_copy.b.epnum = hc->ep_num;
+	st->hcchar_copy.b.eptype = hc->ep_type;
+	if (hc->ep_type & 0x1) {
+		if (hc->ep_is_in)
+			st->hcchar_copy.b.multicnt = 3;
+		else
+			/* Docs say set this to 1, but driver sets to 0! */
+			st->hcchar_copy.b.multicnt = 0;
+	} else {
+		st->hcchar_copy.b.multicnt = 1;
+		st->hcchar_copy.b.oddfrm = 0;
+	}
+	st->hcchar_copy.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW) ? 1 : 0;
+	/* Enable the channel later as a final register write. */
+
+	st->hcsplt_copy.d32 = 0;
+	if(qh->do_split) {
+		hcd->fops->hub_info(hcd, DWC_CIRCLEQ_FIRST(&qh->qtd_list)->urb->priv, &hub_addr, &port_addr);
+		st->hcsplt_copy.b.compsplt = 0;
+		st->hcsplt_copy.b.spltena = 1;
+		// XACTPOS is for isoc-out only but needs initialising anyway.
+		st->hcsplt_copy.b.xactpos = ISOC_XACTPOS_ALL;
+		if((qh->ep_type == DWC_OTG_EP_TYPE_ISOC) && (!qh->ep_is_in)) {
+			/* For packetsize 0 < L < 188, ISOC_XACTPOS_ALL.
+			 * for longer than this, ISOC_XACTPOS_BEGIN and the FIQ
+			 * will update as necessary.
+			 */
+			if (hc->xfer_len > 188) {
+				st->hcsplt_copy.b.xactpos = ISOC_XACTPOS_BEGIN;
+			}
+		}
+		st->hcsplt_copy.b.hubaddr = (uint8_t) hub_addr;
+		st->hcsplt_copy.b.prtaddr = (uint8_t) port_addr;
+		st->hub_addr = hub_addr;
+		st->port_addr = port_addr;
+	}
+
+	st->hctsiz_copy.d32 = 0;
+	st->hctsiz_copy.b.dopng = 0;
+	st->hctsiz_copy.b.pid = hc->data_pid_start;
+
+	if (hc->ep_is_in || (hc->xfer_len > hc->max_packet)) {
+		hc->xfer_len = hc->max_packet;
+	} else if (!hc->ep_is_in && (hc->xfer_len > 188)) {
+		hc->xfer_len = 188;
+	}
+	st->hctsiz_copy.b.xfersize = hc->xfer_len;
+
+	st->hctsiz_copy.b.pktcnt = 1;
+
+	if (hc->ep_type & 0x1) {
+		/*
+		 * For potentially multi-packet transfers, must use the DMA bounce buffers. For IN transfers,
+		 * the DMA address is the address of the first 188byte slot buffer in the bounce buffer array.
+		 * For multi-packet OUT transfers, we need to copy the data into the bounce buffer array so the FIQ can punt
+		 * the right address out as necessary. hc->xfer_buff and hc->xfer_len have already been set
+		 * in assign_and_init_hc(), but this is for the eventual transaction completion only. The FIQ
+		 * must not touch internal driver state.
+		 */
+		if(!fiq_fsm_setup_periodic_dma(hcd, st, qh)) {
+			if (hc->align_buff) {
+				st->hcdma_copy.d32 = hc->align_buff;
+			} else {
+				st->hcdma_copy.d32 = ((unsigned long) hc->xfer_buff & 0xFFFFFFFF);
+			}
+		}
+	} else {
+		if (hc->align_buff) {
+			st->hcdma_copy.d32 = hc->align_buff;
+		} else {
+			st->hcdma_copy.d32 = ((unsigned long) hc->xfer_buff & 0xFFFFFFFF);
+		}
+	}
+	/* The FIQ depends upon no other interrupts being enabled except channel halt.
+	 * Fixup channel interrupt mask. */
+	st->hcintmsk_copy.d32 = 0;
+	st->hcintmsk_copy.b.chhltd = 1;
+	st->hcintmsk_copy.b.ahberr = 1;
+
+	/* Hack courtesy of FreeBSD: apparently forcing Interrupt Split transactions
+	 * as Control puts the transfer into the non-periodic request queue and the
+	 * non-periodic handler in the hub. Makes things lots easier.
+	 */
+	if ((fiq_fsm_mask & 0x8) && hc->ep_type == UE_INTERRUPT) {
+		st->hcchar_copy.b.multicnt = 0;
+		st->hcchar_copy.b.oddfrm = 0;
+		st->hcchar_copy.b.eptype = UE_CONTROL;
+		if (hc->align_buff) {
+			st->hcdma_copy.d32 = hc->align_buff;
+		} else {
+			st->hcdma_copy.d32 = ((unsigned long) hc->xfer_buff & 0xFFFFFFFF);
+		}
+	}
+	DWC_WRITE_REG32(&hc_regs->hcdma, st->hcdma_copy.d32);
+	DWC_WRITE_REG32(&hc_regs->hctsiz, st->hctsiz_copy.d32);
+	DWC_WRITE_REG32(&hc_regs->hcsplt, st->hcsplt_copy.d32);
+	DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
+	DWC_WRITE_REG32(&hc_regs->hcintmsk, st->hcintmsk_copy.d32);
+
+	local_fiq_disable();
+	fiq_fsm_spin_lock(&hcd->fiq_state->lock);
+
+	if (hc->ep_type & 0x1) {
+		hfnum.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hfnum);
+		frame = (hfnum.b.frnum & ~0x7) >> 3;
+		uframe = hfnum.b.frnum & 0x7;
+		if (hfnum.b.frrem < PERIODIC_FRREM_BACKOFF) {
+			/* Prevent queueing near EOF1. Bad things happen if a periodic
+			 * split transaction is queued very close to EOF.
+			 */
+			start_immediate = 0;
+		} else if (uframe == 5) {
+			start_immediate = 0;
+		} else if (hc->ep_type == UE_ISOCHRONOUS && !hc->ep_is_in) {
+			start_immediate = 0;
+		} else if (hc->ep_is_in && fiq_fsm_too_late(hcd->fiq_state, hc->hc_num)) {
+			start_immediate = 0;
+		} else {
+			/* Search through all host channels to determine if a transaction
+			 * is currently in progress */
+			for (i = 0; i < hcd->core_if->core_params->host_channels; i++) {
+				if (i == hc->hc_num || hcd->fiq_state->channel[i].fsm == FIQ_PASSTHROUGH)
+					continue;
+				switch (hcd->fiq_state->channel[i].fsm) {
+				/* TT is reserved for channels that are in the middle of a periodic
+				 * split transaction.
+				 */
+				case FIQ_PER_SSPLIT_STARTED:
+				case FIQ_PER_CSPLIT_WAIT:
+				case FIQ_PER_CSPLIT_NYET1:
+				case FIQ_PER_CSPLIT_POLL:
+				case FIQ_PER_ISO_OUT_ACTIVE:
+				case FIQ_PER_ISO_OUT_LAST:
+					if (hcd->fiq_state->channel[i].hub_addr == hub_addr &&
+							hcd->fiq_state->channel[i].port_addr == port_addr) {
+						start_immediate = 0;
+					}
+					break;
+				default:
+					break;
+				}
+				if (!start_immediate)
+					break;
+			}
+		}
+	}
+	if ((fiq_fsm_mask & 0x8) && hc->ep_type == UE_INTERRUPT)
+		start_immediate = 1;
+	
+	fiq_print(FIQDBG_INT, hcd->fiq_state, "FSMQ %01d %01d", hc->hc_num, start_immediate);
+	fiq_print(FIQDBG_INT, hcd->fiq_state, "%08d", hfnum.b.frrem);
+	//fiq_print(FIQDBG_INT, hcd->fiq_state, "H:%02dP:%02d", hub_addr, port_addr);
+	//fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hctsiz_copy.d32);
+	//fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcdma_copy.d32);
+	switch (hc->ep_type) {
+		case UE_CONTROL:
+		case UE_BULK:
+			st->fsm = FIQ_NP_SSPLIT_STARTED;
+			break;
+		case UE_ISOCHRONOUS:
+			if (hc->ep_is_in) {
+				if (start_immediate) {
+					st->fsm = FIQ_PER_SSPLIT_STARTED;
+				} else {
+					st->fsm = FIQ_PER_SSPLIT_QUEUED;
+				}
+			} else {
+				if (start_immediate) {
+					/* Single-isoc OUT packets don't require FIQ involvement */
+					if (st->nrpackets == 1) {
+						st->fsm = FIQ_PER_ISO_OUT_LAST;
+					} else {
+						st->fsm = FIQ_PER_ISO_OUT_ACTIVE;
+					}
+				} else {
+					st->fsm = FIQ_PER_ISO_OUT_PENDING;
+				}
+			}
+			break;
+		case UE_INTERRUPT:
+			if (fiq_fsm_mask & 0x8) {
+				st->fsm = FIQ_NP_SSPLIT_STARTED;
+			} else if (start_immediate) {
+					st->fsm = FIQ_PER_SSPLIT_STARTED;
+			} else {
+				st->fsm = FIQ_PER_SSPLIT_QUEUED;
+			}
+		default:
+			break;
+	}
+	if (start_immediate) {
+		/* Set the oddfrm bit as close as possible to actual queueing */
+		frame = dwc_otg_hcd_get_frame_number(hcd);
+		st->expected_uframe = (frame + 1) & 0x3FFF;
+		st->hcchar_copy.b.oddfrm = (frame & 0x1) ? 0 : 1;
+		st->hcchar_copy.b.chen = 1;
+		DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
+	}
+	mb();
+	fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
+	local_fiq_enable();
+	return 0;
+}
+
+
+/**
+ * This function selects transactions from the HCD transfer schedule and
+ * assigns them to available host channels. It is called from HCD interrupt
+ * handler functions.
+ *
+ * @param hcd The HCD state structure.
+ *
+ * @return The types of new transactions that were assigned to host channels.
+ */
+dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t * hcd)
+{
+	dwc_list_link_t *qh_ptr;
+	dwc_otg_qh_t *qh;
+	int num_channels;
+	dwc_irqflags_t flags;
+	dwc_spinlock_t *channel_lock = hcd->channel_lock;
+	dwc_otg_transaction_type_e ret_val = DWC_OTG_TRANSACTION_NONE;
+
+#ifdef DEBUG_HOST_CHANNELS
+	last_sel_trans_num_per_scheduled = 0;
+	last_sel_trans_num_nonper_scheduled = 0;
+	last_sel_trans_num_avail_hc_at_start = hcd->available_host_channels;
+#endif /* DEBUG_HOST_CHANNELS */
+
+	/* Process entries in the periodic ready list. */
+	qh_ptr = DWC_LIST_FIRST(&hcd->periodic_sched_ready);
+
+	while (qh_ptr != &hcd->periodic_sched_ready &&
+	       !DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
+
+		qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+
+		if (microframe_schedule) {
+			// Make sure we leave one channel for non periodic transactions.
+			DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+			if (hcd->available_host_channels <= 1) {
+				DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+				break;
+			}
+			hcd->available_host_channels--;
+			DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+#ifdef DEBUG_HOST_CHANNELS
+			last_sel_trans_num_per_scheduled++;
+#endif /* DEBUG_HOST_CHANNELS */
+		}
+		qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+		assign_and_init_hc(hcd, qh);
+
+		/*
+		 * Move the QH from the periodic ready schedule to the
+		 * periodic assigned schedule.
+		 */
+		qh_ptr = DWC_LIST_NEXT(qh_ptr);
+		DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+		DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
+				   &qh->qh_list_entry);
+		DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+	}
+
+	/*
+	 * Process entries in the inactive portion of the non-periodic
+	 * schedule. Some free host channels may not be used if they are
+	 * reserved for periodic transfers.
+	 */
+	qh_ptr = hcd->non_periodic_sched_inactive.next;
+	num_channels = hcd->core_if->core_params->host_channels;
+	while (qh_ptr != &hcd->non_periodic_sched_inactive &&
+	       (microframe_schedule || hcd->non_periodic_channels <
+		num_channels - hcd->periodic_channels) &&
+	       !DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
+
+		qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+		/*
+		 * Check to see if this is a NAK'd retransmit, in which case ignore for retransmission
+		 * we hold off on bulk retransmissions to reduce NAK interrupt overhead for full-speed
+		 * cheeky devices that just hold off using NAKs
+		 */
+		if (nak_holdoff && qh->do_split) {
+			if (qh->nak_frame != 0xffff) {
+				uint16_t next_frame = dwc_frame_num_inc(qh->nak_frame, (qh->ep_type == UE_BULK) ? nak_holdoff : 8);
+				uint16_t frame = dwc_otg_hcd_get_frame_number(hcd);
+				if (dwc_frame_num_le(frame, next_frame)) {
+					if(dwc_frame_num_le(next_frame, hcd->fiq_state->next_sched_frame)) {
+						hcd->fiq_state->next_sched_frame = next_frame;
+					}
+					qh_ptr = DWC_LIST_NEXT(qh_ptr);
+					continue;
+				} else {
+					qh->nak_frame = 0xFFFF;
+				}
+			}
+		}
+
+		if (microframe_schedule) {
+				DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+				if (hcd->available_host_channels < 1) {
+					DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+					break;
+				}
+				hcd->available_host_channels--;
+				DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+#ifdef DEBUG_HOST_CHANNELS
+				last_sel_trans_num_nonper_scheduled++;
+#endif /* DEBUG_HOST_CHANNELS */
+		}
+
+		assign_and_init_hc(hcd, qh);
+
+		/*
+		 * Move the QH from the non-periodic inactive schedule to the
+		 * non-periodic active schedule.
+		 */
+		qh_ptr = DWC_LIST_NEXT(qh_ptr);
+		DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+		DWC_LIST_MOVE_HEAD(&hcd->non_periodic_sched_active,
+				   &qh->qh_list_entry);
+		DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+
+
+		if (!microframe_schedule)
+			hcd->non_periodic_channels++;
+	}
+	/* we moved a non-periodic QH to the active schedule. If the inactive queue is empty,
+	 * stop the FIQ from kicking us. We could potentially still have elements here if we
+	 * ran out of host channels.
+	 */
+	if (fiq_enable) {
+		if (DWC_LIST_EMPTY(&hcd->non_periodic_sched_inactive)) {
+			hcd->fiq_state->kick_np_queues = 0;
+		} else {
+			/* For each entry remaining in the NP inactive queue,
+			* if this a NAK'd retransmit then don't set the kick flag.
+			*/
+			if(nak_holdoff) {
+				DWC_LIST_FOREACH(qh_ptr, &hcd->non_periodic_sched_inactive) {
+					qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+					if (qh->nak_frame == 0xFFFF) {
+						hcd->fiq_state->kick_np_queues = 1;
+					}
+				}
+			}
+		}
+	}
+	if(!DWC_LIST_EMPTY(&hcd->periodic_sched_assigned))
+		ret_val |= DWC_OTG_TRANSACTION_PERIODIC;
+
+	if(!DWC_LIST_EMPTY(&hcd->non_periodic_sched_active))
+		ret_val |= DWC_OTG_TRANSACTION_NON_PERIODIC;
+
+
+#ifdef DEBUG_HOST_CHANNELS
+	last_sel_trans_num_avail_hc_at_end = hcd->available_host_channels;
+#endif /* DEBUG_HOST_CHANNELS */
+	return ret_val;
+}
+
+/**
+ * Attempts to queue a single transaction request for a host channel
+ * associated with either a periodic or non-periodic transfer. This function
+ * assumes that there is space available in the appropriate request queue. For
+ * an OUT transfer or SETUP transaction in Slave mode, it checks whether space
+ * is available in the appropriate Tx FIFO.
+ *
+ * @param hcd The HCD state structure.
+ * @param hc Host channel descriptor associated with either a periodic or
+ * non-periodic transfer.
+ * @param fifo_dwords_avail Number of DWORDs available in the periodic Tx
+ * FIFO for periodic transfers or the non-periodic Tx FIFO for non-periodic
+ * transfers.
+ *
+ * @return 1 if a request is queued and more requests may be needed to
+ * complete the transfer, 0 if no more requests are required for this
+ * transfer, -1 if there is insufficient space in the Tx FIFO.
+ */
+static int queue_transaction(dwc_otg_hcd_t * hcd,
+			     dwc_hc_t * hc, uint16_t fifo_dwords_avail)
+{
+	int retval;
+
+	if (hcd->core_if->dma_enable) {
+		if (hcd->core_if->dma_desc_enable) {
+			if (!hc->xfer_started
+			    || (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)) {
+				dwc_otg_hcd_start_xfer_ddma(hcd, hc->qh);
+				hc->qh->ping_state = 0;
+			}
+		} else if (!hc->xfer_started) {
+			if (fiq_fsm_enable && hc->error_state) {
+				hcd->fiq_state->channel[hc->hc_num].nr_errors =
+					DWC_CIRCLEQ_FIRST(&hc->qh->qtd_list)->error_count;
+				hcd->fiq_state->channel[hc->hc_num].fsm =
+					FIQ_PASSTHROUGH_ERRORSTATE;
+			}
+			dwc_otg_hc_start_transfer(hcd->core_if, hc);
+			hc->qh->ping_state = 0;
+		}
+		retval = 0;
+	} else if (hc->halt_pending) {
+		/* Don't queue a request if the channel has been halted. */
+		retval = 0;
+	} else if (hc->halt_on_queue) {
+		dwc_otg_hc_halt(hcd->core_if, hc, hc->halt_status);
+		retval = 0;
+	} else if (hc->do_ping) {
+		if (!hc->xfer_started) {
+			dwc_otg_hc_start_transfer(hcd->core_if, hc);
+		}
+		retval = 0;
+	} else if (!hc->ep_is_in || hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
+		if ((fifo_dwords_avail * 4) >= hc->max_packet) {
+			if (!hc->xfer_started) {
+				dwc_otg_hc_start_transfer(hcd->core_if, hc);
+				retval = 1;
+			} else {
+				retval =
+				    dwc_otg_hc_continue_transfer(hcd->core_if,
+								 hc);
+			}
+		} else {
+			retval = -1;
+		}
+	} else {
+		if (!hc->xfer_started) {
+			dwc_otg_hc_start_transfer(hcd->core_if, hc);
+			retval = 1;
+		} else {
+			retval = dwc_otg_hc_continue_transfer(hcd->core_if, hc);
+		}
+	}
+
+	return retval;
+}
+
+/**
+ * Processes periodic channels for the next frame and queues transactions for
+ * these channels to the DWC_otg controller. After queueing transactions, the
+ * Periodic Tx FIFO Empty interrupt is enabled if there are more transactions
+ * to queue as Periodic Tx FIFO or request queue space becomes available.
+ * Otherwise, the Periodic Tx FIFO Empty interrupt is disabled.
+ */
+static void process_periodic_channels(dwc_otg_hcd_t * hcd)
+{
+	hptxsts_data_t tx_status;
+	dwc_list_link_t *qh_ptr;
+	dwc_otg_qh_t *qh;
+	int status = 0;
+	int no_queue_space = 0;
+	int no_fifo_space = 0;
+
+	dwc_otg_host_global_regs_t *host_regs;
+	host_regs = hcd->core_if->host_if->host_global_regs;
+
+	DWC_DEBUGPL(DBG_HCDV, "Queue periodic transactions\n");
+#ifdef DEBUG
+	tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
+	DWC_DEBUGPL(DBG_HCDV,
+		    "  P Tx Req Queue Space Avail (before queue): %d\n",
+		    tx_status.b.ptxqspcavail);
+	DWC_DEBUGPL(DBG_HCDV, "  P Tx FIFO Space Avail (before queue): %d\n",
+		    tx_status.b.ptxfspcavail);
+#endif
+
+	qh_ptr = hcd->periodic_sched_assigned.next;
+	while (qh_ptr != &hcd->periodic_sched_assigned) {
+		tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
+		if (tx_status.b.ptxqspcavail == 0) {
+			no_queue_space = 1;
+			break;
+		}
+
+		qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+
+		// Do not send a split start transaction any later than frame .6
+		// Note, we have to schedule a periodic in .5 to make it go in .6
+		if(fiq_fsm_enable && qh->do_split && ((dwc_otg_hcd_get_frame_number(hcd) + 1) & 7) > 6)
+		{
+			qh_ptr = qh_ptr->next;
+			hcd->fiq_state->next_sched_frame = dwc_otg_hcd_get_frame_number(hcd) | 7;
+			continue;
+		}
+
+		if (fiq_fsm_enable && fiq_fsm_transaction_suitable(qh)) {
+			if (qh->do_split)
+				fiq_fsm_queue_split_transaction(hcd, qh);
+			else
+				fiq_fsm_queue_isoc_transaction(hcd, qh);
+		} else {
+
+			/*
+			 * Set a flag if we're queueing high-bandwidth in slave mode.
+			 * The flag prevents any halts to get into the request queue in
+			 * the middle of multiple high-bandwidth packets getting queued.
+			 */
+			if (!hcd->core_if->dma_enable && qh->channel->multi_count > 1) {
+				hcd->core_if->queuing_high_bandwidth = 1;
+			}
+			status = queue_transaction(hcd, qh->channel,
+							tx_status.b.ptxfspcavail);
+			if (status < 0) {
+				no_fifo_space = 1;
+				break;
+			}
+		}
+
+		/*
+		 * In Slave mode, stay on the current transfer until there is
+		 * nothing more to do or the high-bandwidth request count is
+		 * reached. In DMA mode, only need to queue one request. The
+		 * controller automatically handles multiple packets for
+		 * high-bandwidth transfers.
+		 */
+		if (hcd->core_if->dma_enable || status == 0 ||
+		    qh->channel->requests == qh->channel->multi_count) {
+			qh_ptr = qh_ptr->next;
+			/*
+			 * Move the QH from the periodic assigned schedule to
+			 * the periodic queued schedule.
+			 */
+			DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_queued,
+					   &qh->qh_list_entry);
+
+			/* done queuing high bandwidth */
+			hcd->core_if->queuing_high_bandwidth = 0;
+		}
+	}
+
+	if (!hcd->core_if->dma_enable) {
+		dwc_otg_core_global_regs_t *global_regs;
+		gintmsk_data_t intr_mask = {.d32 = 0 };
+
+		global_regs = hcd->core_if->core_global_regs;
+		intr_mask.b.ptxfempty = 1;
+#ifdef DEBUG
+		tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
+		DWC_DEBUGPL(DBG_HCDV,
+			    "  P Tx Req Queue Space Avail (after queue): %d\n",
+			    tx_status.b.ptxqspcavail);
+		DWC_DEBUGPL(DBG_HCDV,
+			    "  P Tx FIFO Space Avail (after queue): %d\n",
+			    tx_status.b.ptxfspcavail);
+#endif
+		if (!DWC_LIST_EMPTY(&hcd->periodic_sched_assigned) ||
+		    no_queue_space || no_fifo_space) {
+			/*
+			 * May need to queue more transactions as the request
+			 * queue or Tx FIFO empties. Enable the periodic Tx
+			 * FIFO empty interrupt. (Always use the half-empty
+			 * level to ensure that new requests are loaded as
+			 * soon as possible.)
+			 */
+			DWC_MODIFY_REG32(&global_regs->gintmsk, 0,
+					 intr_mask.d32);
+		} else {
+			/*
+			 * Disable the Tx FIFO empty interrupt since there are
+			 * no more transactions that need to be queued right
+			 * now. This function is called from interrupt
+			 * handlers to queue more transactions as transfer
+			 * states change.
+			 */
+			DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32,
+					 0);
+		}
+	}
+}
+
+/**
+ * Processes active non-periodic channels and queues transactions for these
+ * channels to the DWC_otg controller. After queueing transactions, the NP Tx
+ * FIFO Empty interrupt is enabled if there are more transactions to queue as
+ * NP Tx FIFO or request queue space becomes available. Otherwise, the NP Tx
+ * FIFO Empty interrupt is disabled.
+ */
+static void process_non_periodic_channels(dwc_otg_hcd_t * hcd)
+{
+	gnptxsts_data_t tx_status;
+	dwc_list_link_t *orig_qh_ptr;
+	dwc_otg_qh_t *qh;
+	int status;
+	int no_queue_space = 0;
+	int no_fifo_space = 0;
+	int more_to_do = 0;
+
+	dwc_otg_core_global_regs_t *global_regs =
+	    hcd->core_if->core_global_regs;
+
+	DWC_DEBUGPL(DBG_HCDV, "Queue non-periodic transactions\n");
+#ifdef DEBUG
+	tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+	DWC_DEBUGPL(DBG_HCDV,
+		    "  NP Tx Req Queue Space Avail (before queue): %d\n",
+		    tx_status.b.nptxqspcavail);
+	DWC_DEBUGPL(DBG_HCDV, "  NP Tx FIFO Space Avail (before queue): %d\n",
+		    tx_status.b.nptxfspcavail);
+#endif
+	/*
+	 * Keep track of the starting point. Skip over the start-of-list
+	 * entry.
+	 */
+	if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
+		hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
+	}
+	orig_qh_ptr = hcd->non_periodic_qh_ptr;
+
+	/*
+	 * Process once through the active list or until no more space is
+	 * available in the request queue or the Tx FIFO.
+	 */
+	do {
+		tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+		if (!hcd->core_if->dma_enable && tx_status.b.nptxqspcavail == 0) {
+			no_queue_space = 1;
+			break;
+		}
+
+		qh = DWC_LIST_ENTRY(hcd->non_periodic_qh_ptr, dwc_otg_qh_t,
+				    qh_list_entry);
+
+		if(fiq_fsm_enable && fiq_fsm_transaction_suitable(qh)) {
+			fiq_fsm_queue_split_transaction(hcd, qh);
+		} else {
+			status = queue_transaction(hcd, qh->channel,
+						tx_status.b.nptxfspcavail);
+
+			if (status > 0) {
+				more_to_do = 1;
+			} else if (status < 0) {
+				no_fifo_space = 1;
+				break;
+			}
+		}
+		/* Advance to next QH, skipping start-of-list entry. */
+		hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
+		if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
+			hcd->non_periodic_qh_ptr =
+			    hcd->non_periodic_qh_ptr->next;
+		}
+
+	} while (hcd->non_periodic_qh_ptr != orig_qh_ptr);
+
+	if (!hcd->core_if->dma_enable) {
+		gintmsk_data_t intr_mask = {.d32 = 0 };
+		intr_mask.b.nptxfempty = 1;
+
+#ifdef DEBUG
+		tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+		DWC_DEBUGPL(DBG_HCDV,
+			    "  NP Tx Req Queue Space Avail (after queue): %d\n",
+			    tx_status.b.nptxqspcavail);
+		DWC_DEBUGPL(DBG_HCDV,
+			    "  NP Tx FIFO Space Avail (after queue): %d\n",
+			    tx_status.b.nptxfspcavail);
+#endif
+		if (more_to_do || no_queue_space || no_fifo_space) {
+			/*
+			 * May need to queue more transactions as the request
+			 * queue or Tx FIFO empties. Enable the non-periodic
+			 * Tx FIFO empty interrupt. (Always use the half-empty
+			 * level to ensure that new requests are loaded as
+			 * soon as possible.)
+			 */
+			DWC_MODIFY_REG32(&global_regs->gintmsk, 0,
+					 intr_mask.d32);
+		} else {
+			/*
+			 * Disable the Tx FIFO empty interrupt since there are
+			 * no more transactions that need to be queued right
+			 * now. This function is called from interrupt
+			 * handlers to queue more transactions as transfer
+			 * states change.
+			 */
+			DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32,
+					 0);
+		}
+	}
+}
+
+/**
+ * This function processes the currently active host channels and queues
+ * transactions for these channels to the DWC_otg controller. It is called
+ * from HCD interrupt handler functions.
+ *
+ * @param hcd The HCD state structure.
+ * @param tr_type The type(s) of transactions to queue (non-periodic,
+ * periodic, or both).
+ */
+void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t * hcd,
+				    dwc_otg_transaction_type_e tr_type)
+{
+#ifdef DEBUG_SOF
+	DWC_DEBUGPL(DBG_HCD, "Queue Transactions\n");
+#endif
+	/* Process host channels associated with periodic transfers. */
+	if ((tr_type == DWC_OTG_TRANSACTION_PERIODIC ||
+	     tr_type == DWC_OTG_TRANSACTION_ALL) &&
+	    !DWC_LIST_EMPTY(&hcd->periodic_sched_assigned)) {
+
+		process_periodic_channels(hcd);
+	}
+
+	/* Process host channels associated with non-periodic transfers. */
+	if (tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC ||
+	    tr_type == DWC_OTG_TRANSACTION_ALL) {
+		if (!DWC_LIST_EMPTY(&hcd->non_periodic_sched_active)) {
+			process_non_periodic_channels(hcd);
+		} else {
+			/*
+			 * Ensure NP Tx FIFO empty interrupt is disabled when
+			 * there are no non-periodic transfers to process.
+			 */
+			gintmsk_data_t gintmsk = {.d32 = 0 };
+			gintmsk.b.nptxfempty = 1;
+
+			if (fiq_enable) {
+				local_fiq_disable();
+				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
+				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
+				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
+				local_fiq_enable();
+			} else {
+				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
+			}
+		}
+	}
+}
+
+#ifdef DWC_HS_ELECT_TST
+/*
+ * Quick and dirty hack to implement the HS Electrical Test
+ * SINGLE_STEP_GET_DEVICE_DESCRIPTOR feature.
+ *
+ * This code was copied from our userspace app "hset". It sends a
+ * Get Device Descriptor control sequence in two parts, first the
+ * Setup packet by itself, followed some time later by the In and
+ * Ack packets. Rather than trying to figure out how to add this
+ * functionality to the normal driver code, we just hijack the
+ * hardware, using these two function to drive the hardware
+ * directly.
+ */
+
+static dwc_otg_core_global_regs_t *global_regs;
+static dwc_otg_host_global_regs_t *hc_global_regs;
+static dwc_otg_hc_regs_t *hc_regs;
+static uint32_t *data_fifo;
+
+static void do_setup(void)
+{
+	gintsts_data_t gintsts;
+	hctsiz_data_t hctsiz;
+	hcchar_data_t hcchar;
+	haint_data_t haint;
+	hcint_data_t hcint;
+
+	/* Enable HAINTs */
+	DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0001);
+
+	/* Enable HCINTs */
+	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x04a3);
+
+	/* Read GINTSTS */
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/* Read HAINT */
+	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+	/* Read HCINT */
+	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+	/* Read HCCHAR */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+	/* Clear HCINT */
+	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+	/* Clear HAINT */
+	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+	/* Clear GINTSTS */
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	/* Read GINTSTS */
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/*
+	 * Send Setup packet (Get Device Descriptor)
+	 */
+
+	/* Make sure channel is disabled */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	if (hcchar.b.chen) {
+		hcchar.b.chdis = 1;
+//              hcchar.b.chen = 1;
+		DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+		//sleep(1);
+		dwc_mdelay(1000);
+
+		/* Read GINTSTS */
+		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+		/* Read HAINT */
+		haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+		/* Read HCINT */
+		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+		/* Read HCCHAR */
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+		/* Clear HCINT */
+		DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+		/* Clear HAINT */
+		DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+		/* Clear GINTSTS */
+		DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	}
+
+	/* Set HCTSIZ */
+	hctsiz.d32 = 0;
+	hctsiz.b.xfersize = 8;
+	hctsiz.b.pktcnt = 1;
+	hctsiz.b.pid = DWC_OTG_HC_PID_SETUP;
+	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+	/* Set HCCHAR */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+	hcchar.b.epdir = 0;
+	hcchar.b.epnum = 0;
+	hcchar.b.mps = 8;
+	hcchar.b.chen = 1;
+	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+	/* Fill FIFO with Setup data for Get Device Descriptor */
+	data_fifo = (uint32_t *) ((char *)global_regs + 0x1000);
+	DWC_WRITE_REG32(data_fifo++, 0x01000680);
+	DWC_WRITE_REG32(data_fifo++, 0x00080000);
+
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/* Wait for host channel interrupt */
+	do {
+		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+	} while (gintsts.b.hcintr == 0);
+
+	/* Disable HCINTs */
+	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x0000);
+
+	/* Disable HAINTs */
+	DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0000);
+
+	/* Read HAINT */
+	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+	/* Read HCINT */
+	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+	/* Read HCCHAR */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+	/* Clear HCINT */
+	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+	/* Clear HAINT */
+	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+	/* Clear GINTSTS */
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	/* Read GINTSTS */
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+}
+
+static void do_in_ack(void)
+{
+	gintsts_data_t gintsts;
+	hctsiz_data_t hctsiz;
+	hcchar_data_t hcchar;
+	haint_data_t haint;
+	hcint_data_t hcint;
+	host_grxsts_data_t grxsts;
+
+	/* Enable HAINTs */
+	DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0001);
+
+	/* Enable HCINTs */
+	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x04a3);
+
+	/* Read GINTSTS */
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/* Read HAINT */
+	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+	/* Read HCINT */
+	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+	/* Read HCCHAR */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+	/* Clear HCINT */
+	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+	/* Clear HAINT */
+	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+	/* Clear GINTSTS */
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	/* Read GINTSTS */
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/*
+	 * Receive Control In packet
+	 */
+
+	/* Make sure channel is disabled */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	if (hcchar.b.chen) {
+		hcchar.b.chdis = 1;
+		hcchar.b.chen = 1;
+		DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+		//sleep(1);
+		dwc_mdelay(1000);
+
+		/* Read GINTSTS */
+		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+		/* Read HAINT */
+		haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+		/* Read HCINT */
+		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+		/* Read HCCHAR */
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+		/* Clear HCINT */
+		DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+		/* Clear HAINT */
+		DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+		/* Clear GINTSTS */
+		DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	}
+
+	/* Set HCTSIZ */
+	hctsiz.d32 = 0;
+	hctsiz.b.xfersize = 8;
+	hctsiz.b.pktcnt = 1;
+	hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
+	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+	/* Set HCCHAR */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+	hcchar.b.epdir = 1;
+	hcchar.b.epnum = 0;
+	hcchar.b.mps = 8;
+	hcchar.b.chen = 1;
+	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/* Wait for receive status queue interrupt */
+	do {
+		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+	} while (gintsts.b.rxstsqlvl == 0);
+
+	/* Read RXSTS */
+	grxsts.d32 = DWC_READ_REG32(&global_regs->grxstsp);
+
+	/* Clear RXSTSQLVL in GINTSTS */
+	gintsts.d32 = 0;
+	gintsts.b.rxstsqlvl = 1;
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	switch (grxsts.b.pktsts) {
+	case DWC_GRXSTS_PKTSTS_IN:
+		/* Read the data into the host buffer */
+		if (grxsts.b.bcnt > 0) {
+			int i;
+			int word_count = (grxsts.b.bcnt + 3) / 4;
+
+			data_fifo = (uint32_t *) ((char *)global_regs + 0x1000);
+
+			for (i = 0; i < word_count; i++) {
+				(void)DWC_READ_REG32(data_fifo++);
+			}
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/* Wait for receive status queue interrupt */
+	do {
+		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+	} while (gintsts.b.rxstsqlvl == 0);
+
+	/* Read RXSTS */
+	grxsts.d32 = DWC_READ_REG32(&global_regs->grxstsp);
+
+	/* Clear RXSTSQLVL in GINTSTS */
+	gintsts.d32 = 0;
+	gintsts.b.rxstsqlvl = 1;
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	switch (grxsts.b.pktsts) {
+	case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
+		break;
+
+	default:
+		break;
+	}
+
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/* Wait for host channel interrupt */
+	do {
+		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+	} while (gintsts.b.hcintr == 0);
+
+	/* Read HAINT */
+	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+	/* Read HCINT */
+	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+	/* Read HCCHAR */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+	/* Clear HCINT */
+	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+	/* Clear HAINT */
+	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+	/* Clear GINTSTS */
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	/* Read GINTSTS */
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+//      usleep(100000);
+//      mdelay(100);
+	dwc_mdelay(1);
+
+	/*
+	 * Send handshake packet
+	 */
+
+	/* Read HAINT */
+	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+	/* Read HCINT */
+	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+	/* Read HCCHAR */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+	/* Clear HCINT */
+	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+	/* Clear HAINT */
+	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+	/* Clear GINTSTS */
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	/* Read GINTSTS */
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/* Make sure channel is disabled */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	if (hcchar.b.chen) {
+		hcchar.b.chdis = 1;
+		hcchar.b.chen = 1;
+		DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+		//sleep(1);
+		dwc_mdelay(1000);
+
+		/* Read GINTSTS */
+		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+		/* Read HAINT */
+		haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+		/* Read HCINT */
+		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+		/* Read HCCHAR */
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+		/* Clear HCINT */
+		DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+		/* Clear HAINT */
+		DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+		/* Clear GINTSTS */
+		DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	}
+
+	/* Set HCTSIZ */
+	hctsiz.d32 = 0;
+	hctsiz.b.xfersize = 0;
+	hctsiz.b.pktcnt = 1;
+	hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
+	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
+
+	/* Set HCCHAR */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+	hcchar.b.epdir = 0;
+	hcchar.b.epnum = 0;
+	hcchar.b.mps = 8;
+	hcchar.b.chen = 1;
+	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
+
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+
+	/* Wait for host channel interrupt */
+	do {
+		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+	} while (gintsts.b.hcintr == 0);
+
+	/* Disable HCINTs */
+	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x0000);
+
+	/* Disable HAINTs */
+	DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0000);
+
+	/* Read HAINT */
+	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
+
+	/* Read HCINT */
+	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+
+	/* Read HCCHAR */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+
+	/* Clear HCINT */
+	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
+
+	/* Clear HAINT */
+	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
+
+	/* Clear GINTSTS */
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	/* Read GINTSTS */
+	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
+}
+#endif
+
+/** Handles hub class-specific requests. */
+int dwc_otg_hcd_hub_control(dwc_otg_hcd_t * dwc_otg_hcd,
+			    uint16_t typeReq,
+			    uint16_t wValue,
+			    uint16_t wIndex, uint8_t * buf, uint16_t wLength)
+{
+	int retval = 0;
+
+	dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+	usb_hub_descriptor_t *hub_desc;
+	hprt0_data_t hprt0 = {.d32 = 0 };
+
+	uint32_t port_status;
+
+	switch (typeReq) {
+	case UCR_CLEAR_HUB_FEATURE:
+		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+			    "ClearHubFeature 0x%x\n", wValue);
+		switch (wValue) {
+		case UHF_C_HUB_LOCAL_POWER:
+		case UHF_C_HUB_OVER_CURRENT:
+			/* Nothing required here */
+			break;
+		default:
+			retval = -DWC_E_INVALID;
+			DWC_ERROR("DWC OTG HCD - "
+				  "ClearHubFeature request %xh unknown\n",
+				  wValue);
+		}
+		break;
+	case UCR_CLEAR_PORT_FEATURE:
+#ifdef CONFIG_USB_DWC_OTG_LPM
+		if (wValue != UHF_PORT_L1)
+#endif
+			if (!wIndex || wIndex > 1)
+				goto error;
+
+		switch (wValue) {
+		case UHF_PORT_ENABLE:
+			DWC_DEBUGPL(DBG_ANY, "DWC OTG HCD HUB CONTROL - "
+				    "ClearPortFeature USB_PORT_FEAT_ENABLE\n");
+			hprt0.d32 = dwc_otg_read_hprt0(core_if);
+			hprt0.b.prtena = 1;
+			DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+			break;
+		case UHF_PORT_SUSPEND:
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
+
+			if (core_if->power_down == 2) {
+				dwc_otg_host_hibernation_restore(core_if, 0, 0);
+			} else {
+				DWC_WRITE_REG32(core_if->pcgcctl, 0);
+				dwc_mdelay(5);
+
+				hprt0.d32 = dwc_otg_read_hprt0(core_if);
+				hprt0.b.prtres = 1;
+				DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+				hprt0.b.prtsusp = 0;
+				/* Clear Resume bit */
+				dwc_mdelay(100);
+				hprt0.b.prtres = 0;
+				DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+			}
+			break;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+		case UHF_PORT_L1:
+			{
+				pcgcctl_data_t pcgcctl = {.d32 = 0 };
+				glpmcfg_data_t lpmcfg = {.d32 = 0 };
+
+				lpmcfg.d32 =
+				    DWC_READ_REG32(&core_if->
+						   core_global_regs->glpmcfg);
+				lpmcfg.b.en_utmi_sleep = 0;
+				lpmcfg.b.hird_thres &= (~(1 << 4));
+				lpmcfg.b.prt_sleep_sts = 1;
+				DWC_WRITE_REG32(&core_if->
+						core_global_regs->glpmcfg,
+						lpmcfg.d32);
+
+				/* Clear Enbl_L1Gating bit. */
+				pcgcctl.b.enbl_sleep_gating = 1;
+				DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32,
+						 0);
+
+				dwc_mdelay(5);
+
+				hprt0.d32 = dwc_otg_read_hprt0(core_if);
+				hprt0.b.prtres = 1;
+				DWC_WRITE_REG32(core_if->host_if->hprt0,
+						hprt0.d32);
+				/* This bit will be cleared in wakeup interrupt handle */
+				break;
+			}
+#endif
+		case UHF_PORT_POWER:
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "ClearPortFeature USB_PORT_FEAT_POWER\n");
+			hprt0.d32 = dwc_otg_read_hprt0(core_if);
+			hprt0.b.prtpwr = 0;
+			DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+			break;
+		case UHF_PORT_INDICATOR:
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "ClearPortFeature USB_PORT_FEAT_INDICATOR\n");
+			/* Port inidicator not supported */
+			break;
+		case UHF_C_PORT_CONNECTION:
+			/* Clears drivers internal connect status change
+			 * flag */
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "ClearPortFeature USB_PORT_FEAT_C_CONNECTION\n");
+			dwc_otg_hcd->flags.b.port_connect_status_change = 0;
+			break;
+		case UHF_C_PORT_RESET:
+			/* Clears the driver's internal Port Reset Change
+			 * flag */
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "ClearPortFeature USB_PORT_FEAT_C_RESET\n");
+			dwc_otg_hcd->flags.b.port_reset_change = 0;
+			break;
+		case UHF_C_PORT_ENABLE:
+			/* Clears the driver's internal Port
+			 * Enable/Disable Change flag */
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "ClearPortFeature USB_PORT_FEAT_C_ENABLE\n");
+			dwc_otg_hcd->flags.b.port_enable_change = 0;
+			break;
+		case UHF_C_PORT_SUSPEND:
+			/* Clears the driver's internal Port Suspend
+			 * Change flag, which is set when resume signaling on
+			 * the host port is complete */
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "ClearPortFeature USB_PORT_FEAT_C_SUSPEND\n");
+			dwc_otg_hcd->flags.b.port_suspend_change = 0;
+			break;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+		case UHF_C_PORT_L1:
+			dwc_otg_hcd->flags.b.port_l1_change = 0;
+			break;
+#endif
+		case UHF_C_PORT_OVER_CURRENT:
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "ClearPortFeature USB_PORT_FEAT_C_OVER_CURRENT\n");
+			dwc_otg_hcd->flags.b.port_over_current_change = 0;
+			break;
+		default:
+			retval = -DWC_E_INVALID;
+			DWC_ERROR("DWC OTG HCD - "
+				  "ClearPortFeature request %xh "
+				  "unknown or unsupported\n", wValue);
+		}
+		break;
+	case UCR_GET_HUB_DESCRIPTOR:
+		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+			    "GetHubDescriptor\n");
+		hub_desc = (usb_hub_descriptor_t *) buf;
+		hub_desc->bDescLength = 9;
+		hub_desc->bDescriptorType = 0x29;
+		hub_desc->bNbrPorts = 1;
+		USETW(hub_desc->wHubCharacteristics, 0x08);
+		hub_desc->bPwrOn2PwrGood = 1;
+		hub_desc->bHubContrCurrent = 0;
+		hub_desc->DeviceRemovable[0] = 0;
+		hub_desc->DeviceRemovable[1] = 0xff;
+		break;
+	case UCR_GET_HUB_STATUS:
+		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+			    "GetHubStatus\n");
+		DWC_MEMSET(buf, 0, 4);
+		break;
+	case UCR_GET_PORT_STATUS:
+		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+			    "GetPortStatus wIndex = 0x%04x FLAGS=0x%08x\n",
+			    wIndex, dwc_otg_hcd->flags.d32);
+		if (!wIndex || wIndex > 1)
+			goto error;
+
+		port_status = 0;
+
+		if (dwc_otg_hcd->flags.b.port_connect_status_change)
+			port_status |= (1 << UHF_C_PORT_CONNECTION);
+
+		if (dwc_otg_hcd->flags.b.port_enable_change)
+			port_status |= (1 << UHF_C_PORT_ENABLE);
+
+		if (dwc_otg_hcd->flags.b.port_suspend_change)
+			port_status |= (1 << UHF_C_PORT_SUSPEND);
+
+		if (dwc_otg_hcd->flags.b.port_l1_change)
+			port_status |= (1 << UHF_C_PORT_L1);
+
+		if (dwc_otg_hcd->flags.b.port_reset_change) {
+			port_status |= (1 << UHF_C_PORT_RESET);
+		}
+
+		if (dwc_otg_hcd->flags.b.port_over_current_change) {
+			DWC_WARN("Overcurrent change detected\n");
+			port_status |= (1 << UHF_C_PORT_OVER_CURRENT);
+		}
+
+		if (!dwc_otg_hcd->flags.b.port_connect_status) {
+			/*
+			 * The port is disconnected, which means the core is
+			 * either in device mode or it soon will be. Just
+			 * return 0's for the remainder of the port status
+			 * since the port register can't be read if the core
+			 * is in device mode.
+			 */
+			*((__le32 *) buf) = dwc_cpu_to_le32(&port_status);
+			break;
+		}
+
+		hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
+		DWC_DEBUGPL(DBG_HCDV, "  HPRT0: 0x%08x\n", hprt0.d32);
+
+		if (hprt0.b.prtconnsts)
+			port_status |= (1 << UHF_PORT_CONNECTION);
+
+		if (hprt0.b.prtena)
+			port_status |= (1 << UHF_PORT_ENABLE);
+
+		if (hprt0.b.prtsusp)
+			port_status |= (1 << UHF_PORT_SUSPEND);
+
+		if (hprt0.b.prtovrcurract)
+			port_status |= (1 << UHF_PORT_OVER_CURRENT);
+
+		if (hprt0.b.prtrst)
+			port_status |= (1 << UHF_PORT_RESET);
+
+		if (hprt0.b.prtpwr)
+			port_status |= (1 << UHF_PORT_POWER);
+
+		if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED)
+			port_status |= (1 << UHF_PORT_HIGH_SPEED);
+		else if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED)
+			port_status |= (1 << UHF_PORT_LOW_SPEED);
+
+		if (hprt0.b.prttstctl)
+			port_status |= (1 << UHF_PORT_TEST);
+		if (dwc_otg_get_lpm_portsleepstatus(dwc_otg_hcd->core_if)) {
+			port_status |= (1 << UHF_PORT_L1);
+		}
+		/*
+		   For Synopsys HW emulation of Power down wkup_control asserts the
+		   hreset_n and prst_n on suspned. This causes the HPRT0 to be zero.
+		   We intentionally tell the software that port is in L2Suspend state.
+		   Only for STE.
+		*/
+		if ((core_if->power_down == 2)
+		    && (core_if->hibernation_suspend == 1)) {
+			port_status |= (1 << UHF_PORT_SUSPEND);
+		}
+		/* USB_PORT_FEAT_INDICATOR unsupported always 0 */
+
+		*((__le32 *) buf) = dwc_cpu_to_le32(&port_status);
+
+		break;
+	case UCR_SET_HUB_FEATURE:
+		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+			    "SetHubFeature\n");
+		/* No HUB features supported */
+		break;
+	case UCR_SET_PORT_FEATURE:
+		if (wValue != UHF_PORT_TEST && (!wIndex || wIndex > 1))
+			goto error;
+
+		if (!dwc_otg_hcd->flags.b.port_connect_status) {
+			/*
+			 * The port is disconnected, which means the core is
+			 * either in device mode or it soon will be. Just
+			 * return without doing anything since the port
+			 * register can't be written if the core is in device
+			 * mode.
+			 */
+			break;
+		}
+
+		switch (wValue) {
+		case UHF_PORT_SUSPEND:
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
+			if (dwc_otg_hcd_otg_port(dwc_otg_hcd) != wIndex) {
+				goto error;
+			}
+			if (core_if->power_down == 2) {
+				int timeout = 300;
+				dwc_irqflags_t flags;
+				pcgcctl_data_t pcgcctl = {.d32 = 0 };
+				gpwrdn_data_t gpwrdn = {.d32 = 0 };
+				gusbcfg_data_t gusbcfg = {.d32 = 0 };
+#ifdef DWC_DEV_SRPCAP
+				int32_t otg_cap_param = core_if->core_params->otg_cap;
+#endif
+				DWC_PRINTF("Preparing for complete power-off\n");
+
+				/* Save registers before hibernation */
+				dwc_otg_save_global_regs(core_if);
+				dwc_otg_save_host_regs(core_if);
+
+				hprt0.d32 = dwc_otg_read_hprt0(core_if);
+				hprt0.b.prtsusp = 1;
+				hprt0.b.prtena = 0;
+				DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+				/* Spin hprt0.b.prtsusp to became 1 */
+				do {
+					hprt0.d32 = dwc_otg_read_hprt0(core_if);
+					if (hprt0.b.prtsusp) {
+						break;
+					}
+					dwc_mdelay(1);
+				} while (--timeout);
+				if (!timeout) {
+					DWC_WARN("Suspend wasn't genereted\n");
+				}
+				dwc_udelay(10);
+
+				/*
+				 * We need to disable interrupts to prevent servicing of any IRQ
+				 * during going to hibernation
+				 */
+				DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
+				core_if->lx_state = DWC_OTG_L2;
+#ifdef DWC_DEV_SRPCAP
+				hprt0.d32 = dwc_otg_read_hprt0(core_if);
+				hprt0.b.prtpwr = 0;
+				hprt0.b.prtena = 0;
+				DWC_WRITE_REG32(core_if->host_if->hprt0,
+						hprt0.d32);
+#endif
+				gusbcfg.d32 =
+				    DWC_READ_REG32(&core_if->core_global_regs->
+						   gusbcfg);
+				if (gusbcfg.b.ulpi_utmi_sel == 1) {
+					/* ULPI interface */
+					/* Suspend the Phy Clock */
+					pcgcctl.d32 = 0;
+					pcgcctl.b.stoppclk = 1;
+					DWC_MODIFY_REG32(core_if->pcgcctl, 0,
+							 pcgcctl.d32);
+					dwc_udelay(10);
+					gpwrdn.b.pmuactv = 1;
+					DWC_MODIFY_REG32(&core_if->
+							 core_global_regs->
+							 gpwrdn, 0, gpwrdn.d32);
+				} else {
+					/* UTMI+ Interface */
+					gpwrdn.b.pmuactv = 1;
+					DWC_MODIFY_REG32(&core_if->
+							 core_global_regs->
+							 gpwrdn, 0, gpwrdn.d32);
+					dwc_udelay(10);
+					pcgcctl.b.stoppclk = 1;
+					DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
+					dwc_udelay(10);
+				}
+#ifdef DWC_DEV_SRPCAP
+				gpwrdn.d32 = 0;
+				gpwrdn.b.dis_vbus = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+#endif
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pmuintsel = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+				dwc_udelay(10);
+
+				gpwrdn.d32 = 0;
+#ifdef DWC_DEV_SRPCAP
+				gpwrdn.b.srp_det_msk = 1;
+#endif
+				gpwrdn.b.disconn_det_msk = 1;
+				gpwrdn.b.lnstchng_msk = 1;
+				gpwrdn.b.sts_chngint_msk = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+				dwc_udelay(10);
+
+				/* Enable Power Down Clamp and all interrupts in GPWRDN */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pwrdnclmp = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+				dwc_udelay(10);
+
+				/* Switch off VDD */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pwrdnswtch = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+
+#ifdef DWC_DEV_SRPCAP
+				if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE)
+				{
+					core_if->pwron_timer_started = 1;
+					DWC_TIMER_SCHEDULE(core_if->pwron_timer, 6000 /* 6 secs */ );
+				}
+#endif
+				/* Save gpwrdn register for further usage if stschng interrupt */
+				core_if->gr_backup->gpwrdn_local =
+						DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
+
+				/* Set flag to indicate that we are in hibernation */
+				core_if->hibernation_suspend = 1;
+				DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock,flags);
+
+				DWC_PRINTF("Host hibernation completed\n");
+				// Exit from case statement
+				break;
+
+			}
+			if (dwc_otg_hcd_otg_port(dwc_otg_hcd) == wIndex &&
+			    dwc_otg_hcd->fops->get_b_hnp_enable(dwc_otg_hcd)) {
+				gotgctl_data_t gotgctl = {.d32 = 0 };
+				gotgctl.b.hstsethnpen = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gotgctl, 0, gotgctl.d32);
+				core_if->op_state = A_SUSPEND;
+			}
+			hprt0.d32 = dwc_otg_read_hprt0(core_if);
+			hprt0.b.prtsusp = 1;
+			DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+			{
+				dwc_irqflags_t flags;
+				/* Update lx_state */
+				DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
+				core_if->lx_state = DWC_OTG_L2;
+				DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
+			}
+			/* Suspend the Phy Clock */
+			{
+				pcgcctl_data_t pcgcctl = {.d32 = 0 };
+				pcgcctl.b.stoppclk = 1;
+				DWC_MODIFY_REG32(core_if->pcgcctl, 0,
+						 pcgcctl.d32);
+				dwc_udelay(10);
+			}
+
+			/* For HNP the bus must be suspended for at least 200ms. */
+			if (dwc_otg_hcd->fops->get_b_hnp_enable(dwc_otg_hcd)) {
+				pcgcctl_data_t pcgcctl = {.d32 = 0 };
+				pcgcctl.b.stoppclk = 1;
+                DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+				dwc_mdelay(200);
+			}
+
+			/** @todo - check how sw can wait for 1 sec to check asesvld??? */
+#if 0 //vahrama !!!!!!!!!!!!!!!!!!
+			if (core_if->adp_enable) {
+				gotgctl_data_t gotgctl = {.d32 = 0 };
+				gpwrdn_data_t gpwrdn;
+
+				while (gotgctl.b.asesvld == 1) {
+					gotgctl.d32 =
+					    DWC_READ_REG32(&core_if->
+							   core_global_regs->
+							   gotgctl);
+					dwc_mdelay(100);
+				}
+
+				/* Enable Power Down Logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pmuactv = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+
+				/* Unmask SRP detected interrupt from Power Down Logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.srp_det_msk = 1;
+				DWC_MODIFY_REG32(&core_if->core_global_regs->
+						 gpwrdn, 0, gpwrdn.d32);
+
+				dwc_otg_adp_probe_start(core_if);
+			}
+#endif
+			break;
+		case UHF_PORT_POWER:
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "SetPortFeature - USB_PORT_FEAT_POWER\n");
+			hprt0.d32 = dwc_otg_read_hprt0(core_if);
+			hprt0.b.prtpwr = 1;
+			DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+			break;
+		case UHF_PORT_RESET:
+			if ((core_if->power_down == 2)
+			    && (core_if->hibernation_suspend == 1)) {
+				/* If we are going to exit from Hibernated
+				 * state via USB RESET.
+				 */
+				dwc_otg_host_hibernation_restore(core_if, 0, 1);
+			} else {
+				hprt0.d32 = dwc_otg_read_hprt0(core_if);
+
+				DWC_DEBUGPL(DBG_HCD,
+					    "DWC OTG HCD HUB CONTROL - "
+					    "SetPortFeature - USB_PORT_FEAT_RESET\n");
+				{
+					pcgcctl_data_t pcgcctl = {.d32 = 0 };
+					pcgcctl.b.enbl_sleep_gating = 1;
+					pcgcctl.b.stoppclk = 1;
+					DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
+					DWC_WRITE_REG32(core_if->pcgcctl, 0);
+				}
+#ifdef CONFIG_USB_DWC_OTG_LPM
+				{
+					glpmcfg_data_t lpmcfg;
+					lpmcfg.d32 =
+						DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+					if (lpmcfg.b.prt_sleep_sts) {
+						lpmcfg.b.en_utmi_sleep = 0;
+						lpmcfg.b.hird_thres &= (~(1 << 4));
+						DWC_WRITE_REG32
+						    (&core_if->core_global_regs->glpmcfg,
+						     lpmcfg.d32);
+						dwc_mdelay(1);
+					}
+				}
+#endif
+				hprt0.d32 = dwc_otg_read_hprt0(core_if);
+				/* Clear suspend bit if resetting from suspended state. */
+				hprt0.b.prtsusp = 0;
+				/* When B-Host the Port reset bit is set in
+				 * the Start HCD Callback function, so that
+				 * the reset is started within 1ms of the HNP
+				 * success interrupt. */
+				if (!dwc_otg_hcd_is_b_host(dwc_otg_hcd)) {
+					hprt0.b.prtpwr = 1;
+					hprt0.b.prtrst = 1;
+					DWC_PRINTF("Indeed it is in host mode hprt0 = %08x\n",hprt0.d32);
+					DWC_WRITE_REG32(core_if->host_if->hprt0,
+							hprt0.d32);
+				}
+				/* Clear reset bit in 10ms (FS/LS) or 50ms (HS) */
+				dwc_mdelay(60);
+				hprt0.b.prtrst = 0;
+				DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+				core_if->lx_state = DWC_OTG_L0;	/* Now back to the on state */
+			}
+			break;
+#ifdef DWC_HS_ELECT_TST
+		case UHF_PORT_TEST:
+			{
+				uint32_t t;
+				gintmsk_data_t gintmsk;
+
+				t = (wIndex >> 8);	/* MSB wIndex USB */
+				DWC_DEBUGPL(DBG_HCD,
+					    "DWC OTG HCD HUB CONTROL - "
+					    "SetPortFeature - USB_PORT_FEAT_TEST %d\n",
+					    t);
+				DWC_WARN("USB_PORT_FEAT_TEST %d\n", t);
+				if (t < 6) {
+					hprt0.d32 = dwc_otg_read_hprt0(core_if);
+					hprt0.b.prttstctl = t;
+					DWC_WRITE_REG32(core_if->host_if->hprt0,
+							hprt0.d32);
+				} else {
+					/* Setup global vars with reg addresses (quick and
+					 * dirty hack, should be cleaned up)
+					 */
+					global_regs = core_if->core_global_regs;
+					hc_global_regs =
+					    core_if->host_if->host_global_regs;
+					hc_regs =
+					    (dwc_otg_hc_regs_t *) ((char *)
+								   global_regs +
+								   0x500);
+					data_fifo =
+					    (uint32_t *) ((char *)global_regs +
+							  0x1000);
+
+					if (t == 6) {	/* HS_HOST_PORT_SUSPEND_RESUME */
+						/* Save current interrupt mask */
+						gintmsk.d32 =
+						    DWC_READ_REG32
+						    (&global_regs->gintmsk);
+
+						/* Disable all interrupts while we muck with
+						 * the hardware directly
+						 */
+						DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+						/* 15 second delay per the test spec */
+						dwc_mdelay(15000);
+
+						/* Drive suspend on the root port */
+						hprt0.d32 =
+						    dwc_otg_read_hprt0(core_if);
+						hprt0.b.prtsusp = 1;
+						hprt0.b.prtres = 0;
+						DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+						/* 15 second delay per the test spec */
+						dwc_mdelay(15000);
+
+						/* Drive resume on the root port */
+						hprt0.d32 =
+						    dwc_otg_read_hprt0(core_if);
+						hprt0.b.prtsusp = 0;
+						hprt0.b.prtres = 1;
+						DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+						dwc_mdelay(100);
+
+						/* Clear the resume bit */
+						hprt0.b.prtres = 0;
+						DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
+
+						/* Restore interrupts */
+						DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
+					} else if (t == 7) {	/* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */
+						/* Save current interrupt mask */
+						gintmsk.d32 =
+						    DWC_READ_REG32
+						    (&global_regs->gintmsk);
+
+						/* Disable all interrupts while we muck with
+						 * the hardware directly
+						 */
+						DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+						/* 15 second delay per the test spec */
+						dwc_mdelay(15000);
+
+						/* Send the Setup packet */
+						do_setup();
+
+						/* 15 second delay so nothing else happens for awhile */
+						dwc_mdelay(15000);
+
+						/* Restore interrupts */
+						DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
+					} else if (t == 8) {	/* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */
+						/* Save current interrupt mask */
+						gintmsk.d32 =
+						    DWC_READ_REG32
+						    (&global_regs->gintmsk);
+
+						/* Disable all interrupts while we muck with
+						 * the hardware directly
+						 */
+						DWC_WRITE_REG32(&global_regs->gintmsk, 0);
+
+						/* Send the Setup packet */
+						do_setup();
+
+						/* 15 second delay so nothing else happens for awhile */
+						dwc_mdelay(15000);
+
+						/* Send the In and Ack packets */
+						do_in_ack();
+
+						/* 15 second delay so nothing else happens for awhile */
+						dwc_mdelay(15000);
+
+						/* Restore interrupts */
+						DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
+					}
+				}
+				break;
+			}
+#endif /* DWC_HS_ELECT_TST */
+
+		case UHF_PORT_INDICATOR:
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+				    "SetPortFeature - USB_PORT_FEAT_INDICATOR\n");
+			/* Not supported */
+			break;
+		default:
+			retval = -DWC_E_INVALID;
+			DWC_ERROR("DWC OTG HCD - "
+				  "SetPortFeature request %xh "
+				  "unknown or unsupported\n", wValue);
+			break;
+		}
+		break;
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	case UCR_SET_AND_TEST_PORT_FEATURE:
+		if (wValue != UHF_PORT_L1) {
+			goto error;
+		}
+		{
+			int portnum, hird, devaddr, remwake;
+			glpmcfg_data_t lpmcfg;
+			uint32_t time_usecs;
+			gintsts_data_t gintsts;
+			gintmsk_data_t gintmsk;
+
+			if (!dwc_otg_get_param_lpm_enable(core_if)) {
+				goto error;
+			}
+			if (wValue != UHF_PORT_L1 || wLength != 1) {
+				goto error;
+			}
+			/* Check if the port currently is in SLEEP state */
+			lpmcfg.d32 =
+			    DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+			if (lpmcfg.b.prt_sleep_sts) {
+				DWC_INFO("Port is already in sleep mode\n");
+				buf[0] = 0;	/* Return success */
+				break;
+			}
+
+			portnum = wIndex & 0xf;
+			hird = (wIndex >> 4) & 0xf;
+			devaddr = (wIndex >> 8) & 0x7f;
+			remwake = (wIndex >> 15);
+
+			if (portnum != 1) {
+				retval = -DWC_E_INVALID;
+				DWC_WARN
+				    ("Wrong port number(%d) in SetandTestPortFeature request\n",
+				     portnum);
+				break;
+			}
+
+			DWC_PRINTF
+			    ("SetandTestPortFeature request: portnum = %d, hird = %d, devaddr = %d, rewake = %d\n",
+			     portnum, hird, devaddr, remwake);
+			/* Disable LPM interrupt */
+			gintmsk.d32 = 0;
+			gintmsk.b.lpmtranrcvd = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
+					 gintmsk.d32, 0);
+
+			if (dwc_otg_hcd_send_lpm
+			    (dwc_otg_hcd, devaddr, hird, remwake)) {
+				retval = -DWC_E_INVALID;
+				break;
+			}
+
+			time_usecs = 10 * (lpmcfg.b.retry_count + 1);
+			/* We will consider timeout if time_usecs microseconds pass,
+			 * and we don't receive LPM transaction status.
+			 * After receiving non-error responce(ACK/NYET/STALL) from device,
+			 *  core will set lpmtranrcvd bit.
+			 */
+			do {
+				gintsts.d32 =
+				    DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+				if (gintsts.b.lpmtranrcvd) {
+					break;
+				}
+				dwc_udelay(1);
+			} while (--time_usecs);
+			/* lpm_int bit will be cleared in LPM interrupt handler */
+
+			/* Now fill status
+			 * 0x00 - Success
+			 * 0x10 - NYET
+			 * 0x11 - Timeout
+			 */
+			if (!gintsts.b.lpmtranrcvd) {
+				buf[0] = 0x3;	/* Completion code is Timeout */
+				dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd);
+			} else {
+				lpmcfg.d32 =
+				    DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+				if (lpmcfg.b.lpm_resp == 0x3) {
+					/* ACK responce from the device */
+					buf[0] = 0x00;	/* Success */
+				} else if (lpmcfg.b.lpm_resp == 0x2) {
+					/* NYET responce from the device */
+					buf[0] = 0x2;
+				} else {
+					/* Otherwise responce with Timeout */
+					buf[0] = 0x3;
+				}
+			}
+			DWC_PRINTF("Device responce to LPM trans is %x\n",
+				   lpmcfg.b.lpm_resp);
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0,
+					 gintmsk.d32);
+
+			break;
+		}
+#endif /* CONFIG_USB_DWC_OTG_LPM */
+	default:
+error:
+		retval = -DWC_E_INVALID;
+		DWC_WARN("DWC OTG HCD - "
+			 "Unknown hub control request type or invalid typeReq: %xh wIndex: %xh wValue: %xh\n",
+			 typeReq, wIndex, wValue);
+		break;
+	}
+
+	return retval;
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/** Returns index of host channel to perform LPM transaction. */
+int dwc_otg_hcd_get_hc_for_lpm_tran(dwc_otg_hcd_t * hcd, uint8_t devaddr)
+{
+	dwc_otg_core_if_t *core_if = hcd->core_if;
+	dwc_hc_t *hc;
+	hcchar_data_t hcchar;
+	gintmsk_data_t gintmsk = {.d32 = 0 };
+
+	if (DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
+		DWC_PRINTF("No free channel to select for LPM transaction\n");
+		return -1;
+	}
+
+	hc = DWC_CIRCLEQ_FIRST(&hcd->free_hc_list);
+
+	/* Mask host channel interrupts. */
+	gintmsk.b.hcintr = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
+
+	/* Fill fields that core needs for LPM transaction */
+	hcchar.b.devaddr = devaddr;
+	hcchar.b.epnum = 0;
+	hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+	hcchar.b.mps = 64;
+	hcchar.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW);
+	hcchar.b.epdir = 0;	/* OUT */
+	DWC_WRITE_REG32(&core_if->host_if->hc_regs[hc->hc_num]->hcchar,
+			hcchar.d32);
+
+	/* Remove the host channel from the free list. */
+	DWC_CIRCLEQ_REMOVE_INIT(&hcd->free_hc_list, hc, hc_list_entry);
+
+	DWC_PRINTF("hcnum = %d devaddr = %d\n", hc->hc_num, devaddr);
+
+	return hc->hc_num;
+}
+
+/** Release hc after performing LPM transaction */
+void dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd_t * hcd)
+{
+	dwc_hc_t *hc;
+	glpmcfg_data_t lpmcfg;
+	uint8_t hc_num;
+
+	lpmcfg.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->glpmcfg);
+	hc_num = lpmcfg.b.lpm_chan_index;
+
+	hc = hcd->hc_ptr_array[hc_num];
+
+	DWC_PRINTF("Freeing channel %d after LPM\n", hc_num);
+	/* Return host channel to free list */
+	DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
+}
+
+int dwc_otg_hcd_send_lpm(dwc_otg_hcd_t * hcd, uint8_t devaddr, uint8_t hird,
+			 uint8_t bRemoteWake)
+{
+	glpmcfg_data_t lpmcfg;
+	pcgcctl_data_t pcgcctl = {.d32 = 0 };
+	int channel;
+
+	channel = dwc_otg_hcd_get_hc_for_lpm_tran(hcd, devaddr);
+	if (channel < 0) {
+		return channel;
+	}
+
+	pcgcctl.b.enbl_sleep_gating = 1;
+	DWC_MODIFY_REG32(hcd->core_if->pcgcctl, 0, pcgcctl.d32);
+
+	/* Read LPM config register */
+	lpmcfg.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->glpmcfg);
+
+	/* Program LPM transaction fields */
+	lpmcfg.b.rem_wkup_en = bRemoteWake;
+	lpmcfg.b.hird = hird;
+	lpmcfg.b.hird_thres = 0x1c;
+	lpmcfg.b.lpm_chan_index = channel;
+	lpmcfg.b.en_utmi_sleep = 1;
+	/* Program LPM config register */
+	DWC_WRITE_REG32(&hcd->core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+
+	/* Send LPM transaction */
+	lpmcfg.b.send_lpm = 1;
+	DWC_WRITE_REG32(&hcd->core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+
+	return 0;
+}
+
+#endif /* CONFIG_USB_DWC_OTG_LPM */
+
+int dwc_otg_hcd_is_status_changed(dwc_otg_hcd_t * hcd, int port)
+{
+	int retval;
+
+	if (port != 1) {
+		return -DWC_E_INVALID;
+	}
+
+	retval = (hcd->flags.b.port_connect_status_change ||
+		  hcd->flags.b.port_reset_change ||
+		  hcd->flags.b.port_enable_change ||
+		  hcd->flags.b.port_suspend_change ||
+		  hcd->flags.b.port_over_current_change);
+#ifdef DEBUG
+	if (retval) {
+		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB STATUS DATA:"
+			    " Root port status changed\n");
+		DWC_DEBUGPL(DBG_HCDV, "  port_connect_status_change: %d\n",
+			    hcd->flags.b.port_connect_status_change);
+		DWC_DEBUGPL(DBG_HCDV, "  port_reset_change: %d\n",
+			    hcd->flags.b.port_reset_change);
+		DWC_DEBUGPL(DBG_HCDV, "  port_enable_change: %d\n",
+			    hcd->flags.b.port_enable_change);
+		DWC_DEBUGPL(DBG_HCDV, "  port_suspend_change: %d\n",
+			    hcd->flags.b.port_suspend_change);
+		DWC_DEBUGPL(DBG_HCDV, "  port_over_current_change: %d\n",
+			    hcd->flags.b.port_over_current_change);
+	}
+#endif
+	return retval;
+}
+
+int dwc_otg_hcd_get_frame_number(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+	hfnum_data_t hfnum;
+	hfnum.d32 =
+	    DWC_READ_REG32(&dwc_otg_hcd->core_if->host_if->host_global_regs->
+			   hfnum);
+
+#ifdef DEBUG_SOF
+	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD GET FRAME NUMBER %d\n",
+		    hfnum.b.frnum);
+#endif
+	return hfnum.b.frnum;
+}
+
+int dwc_otg_hcd_start(dwc_otg_hcd_t * hcd,
+		      struct dwc_otg_hcd_function_ops *fops)
+{
+	int retval = 0;
+
+	hcd->fops = fops;
+	if (!dwc_otg_is_device_mode(hcd->core_if) &&
+		(!hcd->core_if->adp_enable || hcd->core_if->adp.adp_started)) {
+		dwc_otg_hcd_reinit(hcd);
+	} else {
+		retval = -DWC_E_NO_DEVICE;
+	}
+
+	return retval;
+}
+
+void *dwc_otg_hcd_get_priv_data(dwc_otg_hcd_t * hcd)
+{
+	return hcd->priv;
+}
+
+void dwc_otg_hcd_set_priv_data(dwc_otg_hcd_t * hcd, void *priv_data)
+{
+	hcd->priv = priv_data;
+}
+
+uint32_t dwc_otg_hcd_otg_port(dwc_otg_hcd_t * hcd)
+{
+	return hcd->otg_port;
+}
+
+uint32_t dwc_otg_hcd_is_b_host(dwc_otg_hcd_t * hcd)
+{
+	uint32_t is_b_host;
+	if (hcd->core_if->op_state == B_HOST) {
+		is_b_host = 1;
+	} else {
+		is_b_host = 0;
+	}
+
+	return is_b_host;
+}
+
+dwc_otg_hcd_urb_t *dwc_otg_hcd_urb_alloc(dwc_otg_hcd_t * hcd,
+					 int iso_desc_count, int atomic_alloc)
+{
+	dwc_otg_hcd_urb_t *dwc_otg_urb;
+	uint32_t size;
+
+	size =
+	    sizeof(*dwc_otg_urb) +
+	    iso_desc_count * sizeof(struct dwc_otg_hcd_iso_packet_desc);
+	if (atomic_alloc)
+		dwc_otg_urb = DWC_ALLOC_ATOMIC(size);
+	else
+		dwc_otg_urb = DWC_ALLOC(size);
+
+        if (dwc_otg_urb)
+		dwc_otg_urb->packet_count = iso_desc_count;
+        else {
+		DWC_ERROR("**** DWC OTG HCD URB alloc - "
+			"%salloc of %db failed\n",
+			atomic_alloc?"atomic ":"", size);
+	}
+	return dwc_otg_urb;
+}
+
+void dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_hcd_urb_t * dwc_otg_urb,
+				  uint8_t dev_addr, uint8_t ep_num,
+				  uint8_t ep_type, uint8_t ep_dir, uint16_t mps)
+{
+	dwc_otg_hcd_fill_pipe(&dwc_otg_urb->pipe_info, dev_addr, ep_num,
+			      ep_type, ep_dir, mps);
+#if 0
+	DWC_PRINTF
+	    ("addr = %d, ep_num = %d, ep_dir = 0x%x, ep_type = 0x%x, mps = %d\n",
+	     dev_addr, ep_num, ep_dir, ep_type, mps);
+#endif
+}
+
+void dwc_otg_hcd_urb_set_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
+				void *urb_handle, void *buf, dwc_dma_t dma,
+				uint32_t buflen, void *setup_packet,
+				dwc_dma_t setup_dma, uint32_t flags,
+				uint16_t interval)
+{
+	dwc_otg_urb->priv = urb_handle;
+	dwc_otg_urb->buf = buf;
+	dwc_otg_urb->dma = dma;
+	dwc_otg_urb->length = buflen;
+	dwc_otg_urb->setup_packet = setup_packet;
+	dwc_otg_urb->setup_dma = setup_dma;
+	dwc_otg_urb->flags = flags;
+	dwc_otg_urb->interval = interval;
+	dwc_otg_urb->status = -DWC_E_IN_PROGRESS;
+}
+
+uint32_t dwc_otg_hcd_urb_get_status(dwc_otg_hcd_urb_t * dwc_otg_urb)
+{
+	return dwc_otg_urb->status;
+}
+
+uint32_t dwc_otg_hcd_urb_get_actual_length(dwc_otg_hcd_urb_t * dwc_otg_urb)
+{
+	return dwc_otg_urb->actual_length;
+}
+
+uint32_t dwc_otg_hcd_urb_get_error_count(dwc_otg_hcd_urb_t * dwc_otg_urb)
+{
+	return dwc_otg_urb->error_count;
+}
+
+void dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
+					 int desc_num, uint32_t offset,
+					 uint32_t length)
+{
+	dwc_otg_urb->iso_descs[desc_num].offset = offset;
+	dwc_otg_urb->iso_descs[desc_num].length = length;
+}
+
+uint32_t dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_hcd_urb_t * dwc_otg_urb,
+					     int desc_num)
+{
+	return dwc_otg_urb->iso_descs[desc_num].status;
+}
+
+uint32_t dwc_otg_hcd_urb_get_iso_desc_actual_length(dwc_otg_hcd_urb_t *
+						    dwc_otg_urb, int desc_num)
+{
+	return dwc_otg_urb->iso_descs[desc_num].actual_length;
+}
+
+int dwc_otg_hcd_is_bandwidth_allocated(dwc_otg_hcd_t * hcd, void *ep_handle)
+{
+	int allocated = 0;
+	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+
+	if (qh) {
+		if (!DWC_LIST_EMPTY(&qh->qh_list_entry)) {
+			allocated = 1;
+		}
+	}
+	return allocated;
+}
+
+int dwc_otg_hcd_is_bandwidth_freed(dwc_otg_hcd_t * hcd, void *ep_handle)
+{
+	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+	int freed = 0;
+	DWC_ASSERT(qh, "qh is not allocated\n");
+
+	if (DWC_LIST_EMPTY(&qh->qh_list_entry)) {
+		freed = 1;
+	}
+
+	return freed;
+}
+
+uint8_t dwc_otg_hcd_get_ep_bandwidth(dwc_otg_hcd_t * hcd, void *ep_handle)
+{
+	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
+	DWC_ASSERT(qh, "qh is not allocated\n");
+	return qh->usecs;
+}
+
+void dwc_otg_hcd_dump_state(dwc_otg_hcd_t * hcd)
+{
+#ifdef DEBUG
+	int num_channels;
+	int i;
+	gnptxsts_data_t np_tx_status;
+	hptxsts_data_t p_tx_status;
+
+	num_channels = hcd->core_if->core_params->host_channels;
+	DWC_PRINTF("\n");
+	DWC_PRINTF
+	    ("************************************************************\n");
+	DWC_PRINTF("HCD State:\n");
+	DWC_PRINTF("  Num channels: %d\n", num_channels);
+	for (i = 0; i < num_channels; i++) {
+		dwc_hc_t *hc = hcd->hc_ptr_array[i];
+		DWC_PRINTF("  Channel %d:\n", i);
+		DWC_PRINTF("    dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
+			   hc->dev_addr, hc->ep_num, hc->ep_is_in);
+		DWC_PRINTF("    speed: %d\n", hc->speed);
+		DWC_PRINTF("    ep_type: %d\n", hc->ep_type);
+		DWC_PRINTF("    max_packet: %d\n", hc->max_packet);
+		DWC_PRINTF("    data_pid_start: %d\n", hc->data_pid_start);
+		DWC_PRINTF("    multi_count: %d\n", hc->multi_count);
+		DWC_PRINTF("    xfer_started: %d\n", hc->xfer_started);
+		DWC_PRINTF("    xfer_buff: %p\n", hc->xfer_buff);
+		DWC_PRINTF("    xfer_len: %d\n", hc->xfer_len);
+		DWC_PRINTF("    xfer_count: %d\n", hc->xfer_count);
+		DWC_PRINTF("    halt_on_queue: %d\n", hc->halt_on_queue);
+		DWC_PRINTF("    halt_pending: %d\n", hc->halt_pending);
+		DWC_PRINTF("    halt_status: %d\n", hc->halt_status);
+		DWC_PRINTF("    do_split: %d\n", hc->do_split);
+		DWC_PRINTF("    complete_split: %d\n", hc->complete_split);
+		DWC_PRINTF("    hub_addr: %d\n", hc->hub_addr);
+		DWC_PRINTF("    port_addr: %d\n", hc->port_addr);
+		DWC_PRINTF("    xact_pos: %d\n", hc->xact_pos);
+		DWC_PRINTF("    requests: %d\n", hc->requests);
+		DWC_PRINTF("    qh: %p\n", hc->qh);
+		if (hc->xfer_started) {
+			hfnum_data_t hfnum;
+			hcchar_data_t hcchar;
+			hctsiz_data_t hctsiz;
+			hcint_data_t hcint;
+			hcintmsk_data_t hcintmsk;
+			hfnum.d32 =
+			    DWC_READ_REG32(&hcd->core_if->
+					   host_if->host_global_regs->hfnum);
+			hcchar.d32 =
+			    DWC_READ_REG32(&hcd->core_if->host_if->
+					   hc_regs[i]->hcchar);
+			hctsiz.d32 =
+			    DWC_READ_REG32(&hcd->core_if->host_if->
+					   hc_regs[i]->hctsiz);
+			hcint.d32 =
+			    DWC_READ_REG32(&hcd->core_if->host_if->
+					   hc_regs[i]->hcint);
+			hcintmsk.d32 =
+			    DWC_READ_REG32(&hcd->core_if->host_if->
+					   hc_regs[i]->hcintmsk);
+			DWC_PRINTF("    hfnum: 0x%08x\n", hfnum.d32);
+			DWC_PRINTF("    hcchar: 0x%08x\n", hcchar.d32);
+			DWC_PRINTF("    hctsiz: 0x%08x\n", hctsiz.d32);
+			DWC_PRINTF("    hcint: 0x%08x\n", hcint.d32);
+			DWC_PRINTF("    hcintmsk: 0x%08x\n", hcintmsk.d32);
+		}
+		if (hc->xfer_started && hc->qh) {
+			dwc_otg_qtd_t *qtd;
+			dwc_otg_hcd_urb_t *urb;
+
+			DWC_CIRCLEQ_FOREACH(qtd, &hc->qh->qtd_list, qtd_list_entry) {
+				if (!qtd->in_process)
+					break;
+
+				urb = qtd->urb;
+			DWC_PRINTF("    URB Info:\n");
+			DWC_PRINTF("      qtd: %p, urb: %p\n", qtd, urb);
+			if (urb) {
+				DWC_PRINTF("      Dev: %d, EP: %d %s\n",
+					   dwc_otg_hcd_get_dev_addr(&urb->
+								    pipe_info),
+					   dwc_otg_hcd_get_ep_num(&urb->
+								  pipe_info),
+					   dwc_otg_hcd_is_pipe_in(&urb->
+								  pipe_info) ?
+					   "IN" : "OUT");
+				DWC_PRINTF("      Max packet size: %d\n",
+					   dwc_otg_hcd_get_mps(&urb->
+							       pipe_info));
+				DWC_PRINTF("      transfer_buffer: %p\n",
+					   urb->buf);
+				DWC_PRINTF("      transfer_dma: %p\n",
+					   (void *)urb->dma);
+				DWC_PRINTF("      transfer_buffer_length: %d\n",
+					   urb->length);
+					DWC_PRINTF("      actual_length: %d\n",
+						   urb->actual_length);
+				}
+			}
+		}
+	}
+	DWC_PRINTF("  non_periodic_channels: %d\n", hcd->non_periodic_channels);
+	DWC_PRINTF("  periodic_channels: %d\n", hcd->periodic_channels);
+	DWC_PRINTF("  periodic_usecs: %d\n", hcd->periodic_usecs);
+	np_tx_status.d32 =
+	    DWC_READ_REG32(&hcd->core_if->core_global_regs->gnptxsts);
+	DWC_PRINTF("  NP Tx Req Queue Space Avail: %d\n",
+		   np_tx_status.b.nptxqspcavail);
+	DWC_PRINTF("  NP Tx FIFO Space Avail: %d\n",
+		   np_tx_status.b.nptxfspcavail);
+	p_tx_status.d32 =
+	    DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hptxsts);
+	DWC_PRINTF("  P Tx Req Queue Space Avail: %d\n",
+		   p_tx_status.b.ptxqspcavail);
+	DWC_PRINTF("  P Tx FIFO Space Avail: %d\n", p_tx_status.b.ptxfspcavail);
+	dwc_otg_hcd_dump_frrem(hcd);
+	dwc_otg_dump_global_registers(hcd->core_if);
+	dwc_otg_dump_host_registers(hcd->core_if);
+	DWC_PRINTF
+	    ("************************************************************\n");
+	DWC_PRINTF("\n");
+#endif
+}
+
+#ifdef DEBUG
+void dwc_print_setup_data(uint8_t * setup)
+{
+	int i;
+	if (CHK_DEBUG_LEVEL(DBG_HCD)) {
+		DWC_PRINTF("Setup Data = MSB ");
+		for (i = 7; i >= 0; i--)
+			DWC_PRINTF("%02x ", setup[i]);
+		DWC_PRINTF("\n");
+		DWC_PRINTF("  bmRequestType Tranfer = %s\n",
+			   (setup[0] & 0x80) ? "Device-to-Host" :
+			   "Host-to-Device");
+		DWC_PRINTF("  bmRequestType Type = ");
+		switch ((setup[0] & 0x60) >> 5) {
+		case 0:
+			DWC_PRINTF("Standard\n");
+			break;
+		case 1:
+			DWC_PRINTF("Class\n");
+			break;
+		case 2:
+			DWC_PRINTF("Vendor\n");
+			break;
+		case 3:
+			DWC_PRINTF("Reserved\n");
+			break;
+		}
+		DWC_PRINTF("  bmRequestType Recipient = ");
+		switch (setup[0] & 0x1f) {
+		case 0:
+			DWC_PRINTF("Device\n");
+			break;
+		case 1:
+			DWC_PRINTF("Interface\n");
+			break;
+		case 2:
+			DWC_PRINTF("Endpoint\n");
+			break;
+		case 3:
+			DWC_PRINTF("Other\n");
+			break;
+		default:
+			DWC_PRINTF("Reserved\n");
+			break;
+		}
+		DWC_PRINTF("  bRequest = 0x%0x\n", setup[1]);
+		DWC_PRINTF("  wValue = 0x%0x\n", *((uint16_t *) & setup[2]));
+		DWC_PRINTF("  wIndex = 0x%0x\n", *((uint16_t *) & setup[4]));
+		DWC_PRINTF("  wLength = 0x%0x\n\n", *((uint16_t *) & setup[6]));
+	}
+}
+#endif
+
+void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t * hcd)
+{
+#if 0
+	DWC_PRINTF("Frame remaining at SOF:\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->frrem_samples, hcd->frrem_accum,
+		   (hcd->frrem_samples > 0) ?
+		   hcd->frrem_accum / hcd->frrem_samples : 0);
+
+	DWC_PRINTF("\n");
+	DWC_PRINTF("Frame remaining at start_transfer (uframe 7):\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->core_if->hfnum_7_samples,
+		   hcd->core_if->hfnum_7_frrem_accum,
+		   (hcd->core_if->hfnum_7_samples >
+		    0) ? hcd->core_if->hfnum_7_frrem_accum /
+		   hcd->core_if->hfnum_7_samples : 0);
+	DWC_PRINTF("Frame remaining at start_transfer (uframe 0):\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->core_if->hfnum_0_samples,
+		   hcd->core_if->hfnum_0_frrem_accum,
+		   (hcd->core_if->hfnum_0_samples >
+		    0) ? hcd->core_if->hfnum_0_frrem_accum /
+		   hcd->core_if->hfnum_0_samples : 0);
+	DWC_PRINTF("Frame remaining at start_transfer (uframe 1-6):\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->core_if->hfnum_other_samples,
+		   hcd->core_if->hfnum_other_frrem_accum,
+		   (hcd->core_if->hfnum_other_samples >
+		    0) ? hcd->core_if->hfnum_other_frrem_accum /
+		   hcd->core_if->hfnum_other_samples : 0);
+
+	DWC_PRINTF("\n");
+	DWC_PRINTF("Frame remaining at sample point A (uframe 7):\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->hfnum_7_samples_a, hcd->hfnum_7_frrem_accum_a,
+		   (hcd->hfnum_7_samples_a > 0) ?
+		   hcd->hfnum_7_frrem_accum_a / hcd->hfnum_7_samples_a : 0);
+	DWC_PRINTF("Frame remaining at sample point A (uframe 0):\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->hfnum_0_samples_a, hcd->hfnum_0_frrem_accum_a,
+		   (hcd->hfnum_0_samples_a > 0) ?
+		   hcd->hfnum_0_frrem_accum_a / hcd->hfnum_0_samples_a : 0);
+	DWC_PRINTF("Frame remaining at sample point A (uframe 1-6):\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->hfnum_other_samples_a, hcd->hfnum_other_frrem_accum_a,
+		   (hcd->hfnum_other_samples_a > 0) ?
+		   hcd->hfnum_other_frrem_accum_a /
+		   hcd->hfnum_other_samples_a : 0);
+
+	DWC_PRINTF("\n");
+	DWC_PRINTF("Frame remaining at sample point B (uframe 7):\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->hfnum_7_samples_b, hcd->hfnum_7_frrem_accum_b,
+		   (hcd->hfnum_7_samples_b > 0) ?
+		   hcd->hfnum_7_frrem_accum_b / hcd->hfnum_7_samples_b : 0);
+	DWC_PRINTF("Frame remaining at sample point B (uframe 0):\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->hfnum_0_samples_b, hcd->hfnum_0_frrem_accum_b,
+		   (hcd->hfnum_0_samples_b > 0) ?
+		   hcd->hfnum_0_frrem_accum_b / hcd->hfnum_0_samples_b : 0);
+	DWC_PRINTF("Frame remaining at sample point B (uframe 1-6):\n");
+	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
+		   hcd->hfnum_other_samples_b, hcd->hfnum_other_frrem_accum_b,
+		   (hcd->hfnum_other_samples_b > 0) ?
+		   hcd->hfnum_other_frrem_accum_b /
+		   hcd->hfnum_other_samples_b : 0);
+#endif
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,1132 @@
+/*==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_ddma.c $
+ * $Revision: #10 $
+ * $Date: 2011/10/20 $
+ * $Change: 1869464 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/** @file
+ * This file contains Descriptor DMA support implementation for host mode.
+ */
+
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+extern bool microframe_schedule;
+
+static inline uint8_t frame_list_idx(uint16_t frame)
+{
+	return (frame & (MAX_FRLIST_EN_NUM - 1));
+}
+
+static inline uint16_t desclist_idx_inc(uint16_t idx, uint16_t inc, uint8_t speed)
+{
+	return (idx + inc) &
+	    (((speed ==
+	       DWC_OTG_EP_SPEED_HIGH) ? MAX_DMA_DESC_NUM_HS_ISOC :
+	      MAX_DMA_DESC_NUM_GENERIC) - 1);
+}
+
+static inline uint16_t desclist_idx_dec(uint16_t idx, uint16_t inc, uint8_t speed)
+{
+	return (idx - inc) &
+	    (((speed ==
+	       DWC_OTG_EP_SPEED_HIGH) ? MAX_DMA_DESC_NUM_HS_ISOC :
+	      MAX_DMA_DESC_NUM_GENERIC) - 1);
+}
+
+static inline uint16_t max_desc_num(dwc_otg_qh_t * qh)
+{
+	return (((qh->ep_type == UE_ISOCHRONOUS)
+		 && (qh->dev_speed == DWC_OTG_EP_SPEED_HIGH))
+		? MAX_DMA_DESC_NUM_HS_ISOC : MAX_DMA_DESC_NUM_GENERIC);
+}
+static inline uint16_t frame_incr_val(dwc_otg_qh_t * qh)
+{
+	return ((qh->dev_speed == DWC_OTG_EP_SPEED_HIGH)
+		? ((qh->interval + 8 - 1) / 8)
+		: qh->interval);
+}
+
+static int desc_list_alloc(dwc_otg_qh_t * qh)
+{
+	int retval = 0;
+
+	qh->desc_list = (dwc_otg_host_dma_desc_t *)
+	    DWC_DMA_ALLOC(sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh),
+			  &qh->desc_list_dma);
+
+	if (!qh->desc_list) {
+		retval = -DWC_E_NO_MEMORY;
+		DWC_ERROR("%s: DMA descriptor list allocation failed\n", __func__);
+
+	}
+
+	dwc_memset(qh->desc_list, 0x00,
+		   sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh));
+
+	qh->n_bytes =
+	    (uint32_t *) DWC_ALLOC(sizeof(uint32_t) * max_desc_num(qh));
+
+	if (!qh->n_bytes) {
+		retval = -DWC_E_NO_MEMORY;
+		DWC_ERROR
+		    ("%s: Failed to allocate array for descriptors' size actual values\n",
+		     __func__);
+
+	}
+	return retval;
+
+}
+
+static void desc_list_free(dwc_otg_qh_t * qh)
+{
+	if (qh->desc_list) {
+		DWC_DMA_FREE(max_desc_num(qh), qh->desc_list,
+			     qh->desc_list_dma);
+		qh->desc_list = NULL;
+	}
+
+	if (qh->n_bytes) {
+		DWC_FREE(qh->n_bytes);
+		qh->n_bytes = NULL;
+	}
+}
+
+static int frame_list_alloc(dwc_otg_hcd_t * hcd)
+{
+	int retval = 0;
+	if (hcd->frame_list)
+		return 0;
+
+	hcd->frame_list = DWC_DMA_ALLOC(4 * MAX_FRLIST_EN_NUM,
+					&hcd->frame_list_dma);
+	if (!hcd->frame_list) {
+		retval = -DWC_E_NO_MEMORY;
+		DWC_ERROR("%s: Frame List allocation failed\n", __func__);
+	}
+
+	dwc_memset(hcd->frame_list, 0x00, 4 * MAX_FRLIST_EN_NUM);
+
+	return retval;
+}
+
+static void frame_list_free(dwc_otg_hcd_t * hcd)
+{
+	if (!hcd->frame_list)
+		return;
+
+	DWC_DMA_FREE(4 * MAX_FRLIST_EN_NUM, hcd->frame_list, hcd->frame_list_dma);
+	hcd->frame_list = NULL;
+}
+
+static void per_sched_enable(dwc_otg_hcd_t * hcd, uint16_t fr_list_en)
+{
+
+	hcfg_data_t hcfg;
+
+	hcfg.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hcfg);
+
+	if (hcfg.b.perschedena) {
+		/* already enabled */
+		return;
+	}
+
+	DWC_WRITE_REG32(&hcd->core_if->host_if->host_global_regs->hflbaddr,
+			hcd->frame_list_dma);
+
+	switch (fr_list_en) {
+	case 64:
+		hcfg.b.frlisten = 3;
+		break;
+	case 32:
+		hcfg.b.frlisten = 2;
+		break;
+	case 16:
+		hcfg.b.frlisten = 1;
+		break;
+	case 8:
+		hcfg.b.frlisten = 0;
+		break;
+	default:
+		break;
+	}
+
+	hcfg.b.perschedena = 1;
+
+	DWC_DEBUGPL(DBG_HCD, "Enabling Periodic schedule\n");
+	DWC_WRITE_REG32(&hcd->core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+
+}
+
+static void per_sched_disable(dwc_otg_hcd_t * hcd)
+{
+	hcfg_data_t hcfg;
+
+	hcfg.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hcfg);
+
+	if (!hcfg.b.perschedena) {
+		/* already disabled */
+		return;
+	}
+	hcfg.b.perschedena = 0;
+
+	DWC_DEBUGPL(DBG_HCD, "Disabling Periodic schedule\n");
+	DWC_WRITE_REG32(&hcd->core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+}
+
+/*
+ * Activates/Deactivates FrameList entries for the channel
+ * based on endpoint servicing period.
+ */
+void update_frame_list(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, uint8_t enable)
+{
+	uint16_t i, j, inc;
+	dwc_hc_t *hc = NULL;
+
+	if (!qh->channel) {
+		DWC_ERROR("qh->channel = %p", qh->channel);
+		return;
+	}
+
+	if (!hcd) {
+		DWC_ERROR("------hcd = %p", hcd);
+		return;
+	}
+
+	if (!hcd->frame_list) {
+		DWC_ERROR("-------hcd->frame_list = %p", hcd->frame_list);
+		return;
+	}
+
+	hc = qh->channel;
+	inc = frame_incr_val(qh);
+	if (qh->ep_type == UE_ISOCHRONOUS)
+		i = frame_list_idx(qh->sched_frame);
+	else
+		i = 0;
+
+	j = i;
+	do {
+		if (enable)
+			hcd->frame_list[j] |= (1 << hc->hc_num);
+		else
+			hcd->frame_list[j] &= ~(1 << hc->hc_num);
+		j = (j + inc) & (MAX_FRLIST_EN_NUM - 1);
+	}
+	while (j != i);
+	if (!enable)
+		return;
+	hc->schinfo = 0;
+	if (qh->channel->speed == DWC_OTG_EP_SPEED_HIGH) {
+		j = 1;
+		/* TODO - check this */
+		inc = (8 + qh->interval - 1) / qh->interval;
+		for (i = 0; i < inc; i++) {
+			hc->schinfo |= j;
+			j = j << qh->interval;
+		}
+	} else {
+		hc->schinfo = 0xff;
+	}
+}
+
+#if 1
+void dump_frame_list(dwc_otg_hcd_t * hcd)
+{
+	int i = 0;
+	DWC_PRINTF("--FRAME LIST (hex) --\n");
+	for (i = 0; i < MAX_FRLIST_EN_NUM; i++) {
+		DWC_PRINTF("%x\t", hcd->frame_list[i]);
+		if (!(i % 8) && i)
+			DWC_PRINTF("\n");
+	}
+	DWC_PRINTF("\n----\n");
+
+}
+#endif
+
+static void release_channel_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	dwc_irqflags_t flags;
+	dwc_spinlock_t *channel_lock = hcd->channel_lock;
+
+	dwc_hc_t *hc = qh->channel;
+	if (dwc_qh_is_non_per(qh)) {
+		DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+		if (!microframe_schedule)
+			hcd->non_periodic_channels--;
+		else
+			hcd->available_host_channels++;
+		DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+	} else
+		update_frame_list(hcd, qh, 0);
+
+	/*
+	 * The condition is added to prevent double cleanup try in case of device
+	 * disconnect. See channel cleanup in dwc_otg_hcd_disconnect_cb().
+	 */
+	if (hc->qh) {
+		dwc_otg_hc_cleanup(hcd->core_if, hc);
+		DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
+		hc->qh = NULL;
+	}
+
+	qh->channel = NULL;
+	qh->ntd = 0;
+
+	if (qh->desc_list) {
+		dwc_memset(qh->desc_list, 0x00,
+			   sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh));
+	}
+}
+
+/**
+ * Initializes a QH structure's Descriptor DMA related members.
+ * Allocates memory for descriptor list.
+ * On first periodic QH, allocates memory for FrameList
+ * and enables periodic scheduling.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh The QH to init.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qh_init_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	int retval = 0;
+
+	if (qh->do_split) {
+		DWC_ERROR("SPLIT Transfers are not supported in Descriptor DMA.\n");
+		return -1;
+	}
+
+	retval = desc_list_alloc(qh);
+
+	if ((retval == 0)
+	    && (qh->ep_type == UE_ISOCHRONOUS || qh->ep_type == UE_INTERRUPT)) {
+		if (!hcd->frame_list) {
+			retval = frame_list_alloc(hcd);
+			/* Enable periodic schedule on first periodic QH */
+			if (retval == 0)
+				per_sched_enable(hcd, MAX_FRLIST_EN_NUM);
+		}
+	}
+
+	qh->ntd = 0;
+
+	return retval;
+}
+
+/**
+ * Frees descriptor list memory associated with the QH.
+ * If QH is periodic and the last, frees FrameList memory
+ * and disables periodic scheduling.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh The QH to init.
+ */
+void dwc_otg_hcd_qh_free_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	desc_list_free(qh);
+
+	/*
+	 * Channel still assigned due to some reasons.
+	 * Seen on Isoc URB dequeue. Channel halted but no subsequent
+	 * ChHalted interrupt to release the channel. Afterwards
+	 * when it comes here from endpoint disable routine
+	 * channel remains assigned.
+	 */
+	if (qh->channel)
+		release_channel_ddma(hcd, qh);
+
+	if ((qh->ep_type == UE_ISOCHRONOUS || qh->ep_type == UE_INTERRUPT)
+	    && (microframe_schedule || !hcd->periodic_channels) && hcd->frame_list) {
+
+		per_sched_disable(hcd);
+		frame_list_free(hcd);
+	}
+}
+
+static uint8_t frame_to_desc_idx(dwc_otg_qh_t * qh, uint16_t frame_idx)
+{
+	if (qh->dev_speed == DWC_OTG_EP_SPEED_HIGH) {
+		/*
+		 * Descriptor set(8 descriptors) index
+		 * which is 8-aligned.
+		 */
+		return (frame_idx & ((MAX_DMA_DESC_NUM_HS_ISOC / 8) - 1)) * 8;
+	} else {
+		return (frame_idx & (MAX_DMA_DESC_NUM_GENERIC - 1));
+	}
+}
+
+/*
+ * Determine starting frame for Isochronous transfer.
+ * Few frames skipped to prevent race condition with HC.
+ */
+static uint8_t calc_starting_frame(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
+				   uint8_t * skip_frames)
+{
+	uint16_t frame = 0;
+	hcd->frame_number = dwc_otg_hcd_get_frame_number(hcd);
+
+	/* sched_frame is always frame number(not uFrame) both in FS and HS !! */
+
+	/*
+	 * skip_frames is used to limit activated descriptors number
+	 * to avoid the situation when HC services the last activated
+	 * descriptor firstly.
+	 * Example for FS:
+	 * Current frame is 1, scheduled frame is 3. Since HC always fetches the descriptor
+	 * corresponding to curr_frame+1, the descriptor corresponding to frame 2
+	 * will be fetched. If the number of descriptors is max=64 (or greather) the
+	 * list will be fully programmed with Active descriptors and it is possible
+	 * case(rare) that the latest descriptor(considering rollback) corresponding
+	 * to frame 2 will be serviced first. HS case is more probable because, in fact,
+	 * up to 11 uframes(16 in the code) may be skipped.
+	 */
+	if (qh->dev_speed == DWC_OTG_EP_SPEED_HIGH) {
+		/*
+		 * Consider uframe counter also, to start xfer asap.
+		 * If half of the frame elapsed skip 2 frames otherwise
+		 * just 1 frame.
+		 * Starting descriptor index must be 8-aligned, so
+		 * if the current frame is near to complete the next one
+		 * is skipped as well.
+		 */
+
+		if (dwc_micro_frame_num(hcd->frame_number) >= 5) {
+			*skip_frames = 2 * 8;
+			frame = dwc_frame_num_inc(hcd->frame_number, *skip_frames);
+		} else {
+			*skip_frames = 1 * 8;
+			frame = dwc_frame_num_inc(hcd->frame_number, *skip_frames);
+		}
+
+		frame = dwc_full_frame_num(frame);
+	} else {
+		/*
+		 * Two frames are skipped for FS - the current and the next.
+		 * But for descriptor programming, 1 frame(descriptor) is enough,
+		 * see example above.
+		 */
+		*skip_frames = 1;
+		frame = dwc_frame_num_inc(hcd->frame_number, 2);
+	}
+
+	return frame;
+}
+
+/*
+ * Calculate initial descriptor index for isochronous transfer
+ * based on scheduled frame.
+ */
+static uint8_t recalc_initial_desc_idx(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	uint16_t frame = 0, fr_idx, fr_idx_tmp;
+	uint8_t skip_frames = 0;
+	/*
+	 * With current ISOC processing algorithm the channel is being
+	 * released when no more QTDs in the list(qh->ntd == 0).
+	 * Thus this function is called only when qh->ntd == 0 and qh->channel == 0.
+	 *
+	 * So qh->channel != NULL branch is not used and just not removed from the
+	 * source file. It is required for another possible approach which is,
+	 * do not disable and release the channel when ISOC session completed,
+	 * just move QH to inactive schedule until new QTD arrives.
+	 * On new QTD, the QH moved back to 'ready' schedule,
+	 * starting frame and therefore starting desc_index are recalculated.
+	 * In this case channel is released only on ep_disable.
+	 */
+
+	/* Calculate starting descriptor index. For INTERRUPT endpoint it is always 0. */
+	if (qh->channel) {
+		frame = calc_starting_frame(hcd, qh, &skip_frames);
+		/*
+		 * Calculate initial descriptor index based on FrameList current bitmap
+		 * and servicing period.
+		 */
+		fr_idx_tmp = frame_list_idx(frame);
+		fr_idx =
+		    (MAX_FRLIST_EN_NUM + frame_list_idx(qh->sched_frame) -
+		     fr_idx_tmp)
+		    % frame_incr_val(qh);
+		fr_idx = (fr_idx + fr_idx_tmp) % MAX_FRLIST_EN_NUM;
+	} else {
+		qh->sched_frame = calc_starting_frame(hcd, qh, &skip_frames);
+		fr_idx = frame_list_idx(qh->sched_frame);
+	}
+
+	qh->td_first = qh->td_last = frame_to_desc_idx(qh, fr_idx);
+
+	return skip_frames;
+}
+
+#define	ISOC_URB_GIVEBACK_ASAP
+
+#define MAX_ISOC_XFER_SIZE_FS 1023
+#define MAX_ISOC_XFER_SIZE_HS 3072
+#define DESCNUM_THRESHOLD 4
+
+static void init_isoc_dma_desc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
+			       uint8_t skip_frames)
+{
+	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+	dwc_otg_qtd_t *qtd;
+	dwc_otg_host_dma_desc_t *dma_desc;
+	uint16_t idx, inc, n_desc, ntd_max, max_xfer_size;
+
+	idx = qh->td_last;
+	inc = qh->interval;
+	n_desc = 0;
+
+	ntd_max = (max_desc_num(qh) + qh->interval - 1) / qh->interval;
+	if (skip_frames && !qh->channel)
+		ntd_max = ntd_max - skip_frames / qh->interval;
+
+	max_xfer_size =
+	    (qh->dev_speed ==
+	     DWC_OTG_EP_SPEED_HIGH) ? MAX_ISOC_XFER_SIZE_HS :
+	    MAX_ISOC_XFER_SIZE_FS;
+
+	DWC_CIRCLEQ_FOREACH(qtd, &qh->qtd_list, qtd_list_entry) {
+		while ((qh->ntd < ntd_max)
+		       && (qtd->isoc_frame_index_last <
+			   qtd->urb->packet_count)) {
+
+			dma_desc = &qh->desc_list[idx];
+			dwc_memset(dma_desc, 0x00, sizeof(dwc_otg_host_dma_desc_t));
+
+			frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index_last];
+
+			if (frame_desc->length > max_xfer_size)
+				qh->n_bytes[idx] = max_xfer_size;
+			else
+				qh->n_bytes[idx] = frame_desc->length;
+			dma_desc->status.b_isoc.n_bytes = qh->n_bytes[idx];
+			dma_desc->status.b_isoc.a = 1;
+			dma_desc->status.b_isoc.sts = 0;
+
+			dma_desc->buf = qtd->urb->dma + frame_desc->offset;
+
+			qh->ntd++;
+
+			qtd->isoc_frame_index_last++;
+
+#ifdef	ISOC_URB_GIVEBACK_ASAP
+			/*
+			 * Set IOC for each descriptor corresponding to the
+			 * last frame of the URB.
+			 */
+			if (qtd->isoc_frame_index_last ==
+			    qtd->urb->packet_count)
+				dma_desc->status.b_isoc.ioc = 1;
+
+#endif
+			idx = desclist_idx_inc(idx, inc, qh->dev_speed);
+			n_desc++;
+
+		}
+		qtd->in_process = 1;
+	}
+
+	qh->td_last = idx;
+
+#ifdef	ISOC_URB_GIVEBACK_ASAP
+	/* Set IOC for the last descriptor if descriptor list is full */
+	if (qh->ntd == ntd_max) {
+		idx = desclist_idx_dec(qh->td_last, inc, qh->dev_speed);
+		qh->desc_list[idx].status.b_isoc.ioc = 1;
+	}
+#else
+	/*
+	 * Set IOC bit only for one descriptor.
+	 * Always try to be ahead of HW processing,
+	 * i.e. on IOC generation driver activates next descriptors but
+	 * core continues to process descriptors followed the one with IOC set.
+	 */
+
+	if (n_desc > DESCNUM_THRESHOLD) {
+		/*
+		 * Move IOC "up". Required even if there is only one QTD
+		 * in the list, cause QTDs migth continue to be queued,
+		 * but during the activation it was only one queued.
+		 * Actually more than one QTD might be in the list if this function called
+		 * from XferCompletion - QTDs was queued during HW processing of the previous
+		 * descriptor chunk.
+		 */
+		idx = dwc_desclist_idx_dec(idx, inc * ((qh->ntd + 1) / 2), qh->dev_speed);
+	} else {
+		/*
+		 * Set the IOC for the latest descriptor
+		 * if either number of descriptor is not greather than threshold
+		 * or no more new descriptors activated.
+		 */
+		idx = dwc_desclist_idx_dec(qh->td_last, inc, qh->dev_speed);
+	}
+
+	qh->desc_list[idx].status.b_isoc.ioc = 1;
+#endif
+}
+
+static void init_non_isoc_dma_desc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+
+	dwc_hc_t *hc;
+	dwc_otg_host_dma_desc_t *dma_desc;
+	dwc_otg_qtd_t *qtd;
+	int num_packets, len, n_desc = 0;
+
+	hc = qh->channel;
+
+	/*
+	 * Start with hc->xfer_buff initialized in
+	 * assign_and_init_hc(), then if SG transfer consists of multiple URBs,
+	 * this pointer re-assigned to the buffer of the currently processed QTD.
+	 * For non-SG request there is always one QTD active.
+	 */
+
+	DWC_CIRCLEQ_FOREACH(qtd, &qh->qtd_list, qtd_list_entry) {
+
+		if (n_desc) {
+			/* SG request - more than 1 QTDs */
+			hc->xfer_buff = (uint8_t *)qtd->urb->dma + qtd->urb->actual_length;
+			hc->xfer_len = qtd->urb->length - qtd->urb->actual_length;
+		}
+
+		qtd->n_desc = 0;
+
+		do {
+			dma_desc = &qh->desc_list[n_desc];
+			len = hc->xfer_len;
+
+			if (len > MAX_DMA_DESC_SIZE)
+				len = MAX_DMA_DESC_SIZE - hc->max_packet + 1;
+
+			if (hc->ep_is_in) {
+				if (len > 0) {
+					num_packets = (len + hc->max_packet - 1) / hc->max_packet;
+				} else {
+					/* Need 1 packet for transfer length of 0. */
+					num_packets = 1;
+				}
+				/* Always program an integral # of max packets for IN transfers. */
+				len = num_packets * hc->max_packet;
+			}
+
+			dma_desc->status.b.n_bytes = len;
+
+			qh->n_bytes[n_desc] = len;
+
+			if ((qh->ep_type == UE_CONTROL)
+			    && (qtd->control_phase == DWC_OTG_CONTROL_SETUP))
+				dma_desc->status.b.sup = 1;	/* Setup Packet */
+
+			dma_desc->status.b.a = 1;	/* Active descriptor */
+			dma_desc->status.b.sts = 0;
+
+			dma_desc->buf =
+			    ((unsigned long)hc->xfer_buff & 0xffffffff);
+
+			/*
+			 * Last descriptor(or single) of IN transfer
+			 * with actual size less than MaxPacket.
+			 */
+			if (len > hc->xfer_len) {
+				hc->xfer_len = 0;
+			} else {
+				hc->xfer_buff += len;
+				hc->xfer_len -= len;
+			}
+
+			qtd->n_desc++;
+			n_desc++;
+		}
+		while ((hc->xfer_len > 0) && (n_desc != MAX_DMA_DESC_NUM_GENERIC));
+
+
+		qtd->in_process = 1;
+
+		if (qh->ep_type == UE_CONTROL)
+			break;
+
+		if (n_desc == MAX_DMA_DESC_NUM_GENERIC)
+			break;
+	}
+
+	if (n_desc) {
+		/* Request Transfer Complete interrupt for the last descriptor */
+		qh->desc_list[n_desc - 1].status.b.ioc = 1;
+		/* End of List indicator */
+		qh->desc_list[n_desc - 1].status.b.eol = 1;
+
+		hc->ntd = n_desc;
+	}
+}
+
+/**
+ * For Control and Bulk endpoints initializes descriptor list
+ * and starts the transfer.
+ *
+ * For Interrupt and Isochronous endpoints initializes descriptor list
+ * then updates FrameList, marking appropriate entries as active.
+ * In case of Isochronous, the starting descriptor index is calculated based
+ * on the scheduled frame, but only on the first transfer descriptor within a session.
+ * Then starts the transfer via enabling the channel.
+ * For Isochronous endpoint the channel is not halted on XferComplete
+ * interrupt so remains assigned to the endpoint(QH) until session is done.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh The QH to init.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+void dwc_otg_hcd_start_xfer_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	/* Channel is already assigned */
+	dwc_hc_t *hc = qh->channel;
+	uint8_t skip_frames = 0;
+
+	switch (hc->ep_type) {
+	case DWC_OTG_EP_TYPE_CONTROL:
+	case DWC_OTG_EP_TYPE_BULK:
+		init_non_isoc_dma_desc(hcd, qh);
+
+		dwc_otg_hc_start_transfer_ddma(hcd->core_if, hc);
+		break;
+	case DWC_OTG_EP_TYPE_INTR:
+		init_non_isoc_dma_desc(hcd, qh);
+
+		update_frame_list(hcd, qh, 1);
+
+		dwc_otg_hc_start_transfer_ddma(hcd->core_if, hc);
+		break;
+	case DWC_OTG_EP_TYPE_ISOC:
+
+		if (!qh->ntd)
+			skip_frames = recalc_initial_desc_idx(hcd, qh);
+
+		init_isoc_dma_desc(hcd, qh, skip_frames);
+
+		if (!hc->xfer_started) {
+
+			update_frame_list(hcd, qh, 1);
+
+			/*
+			 * Always set to max, instead of actual size.
+			 * Otherwise ntd will be changed with
+			 * channel being enabled. Not recommended.
+			 *
+			 */
+			hc->ntd = max_desc_num(qh);
+			/* Enable channel only once for ISOC */
+			dwc_otg_hc_start_transfer_ddma(hcd->core_if, hc);
+		}
+
+		break;
+	default:
+
+		break;
+	}
+}
+
+static void complete_isoc_xfer_ddma(dwc_otg_hcd_t * hcd,
+				    dwc_hc_t * hc,
+				    dwc_otg_hc_regs_t * hc_regs,
+				    dwc_otg_halt_status_e halt_status)
+{
+	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+	dwc_otg_qtd_t *qtd, *qtd_tmp;
+	dwc_otg_qh_t *qh;
+	dwc_otg_host_dma_desc_t *dma_desc;
+	uint16_t idx, remain;
+	uint8_t urb_compl;
+
+	qh = hc->qh;
+	idx = qh->td_first;
+
+	if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
+		DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry)
+		    qtd->in_process = 0;
+		return;
+	} else if ((halt_status == DWC_OTG_HC_XFER_AHB_ERR) ||
+		   (halt_status == DWC_OTG_HC_XFER_BABBLE_ERR)) {
+		/*
+		 * Channel is halted in these error cases.
+		 * Considered as serious issues.
+		 * Complete all URBs marking all frames as failed,
+		 * irrespective whether some of the descriptors(frames) succeeded or no.
+		 * Pass error code to completion routine as well, to
+		 * update urb->status, some of class drivers might use it to stop
+		 * queing transfer requests.
+		 */
+		int err = (halt_status == DWC_OTG_HC_XFER_AHB_ERR)
+		    ? (-DWC_E_IO)
+		    : (-DWC_E_OVERFLOW);
+
+		DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry) {
+			for (idx = 0; idx < qtd->urb->packet_count; idx++) {
+				frame_desc = &qtd->urb->iso_descs[idx];
+				frame_desc->status = err;
+			}
+			hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, err);
+			dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+		}
+		return;
+	}
+
+	DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry) {
+
+		if (!qtd->in_process)
+			break;
+
+		urb_compl = 0;
+
+		do {
+
+			dma_desc = &qh->desc_list[idx];
+
+			frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
+			remain = hc->ep_is_in ? dma_desc->status.b_isoc.n_bytes : 0;
+
+			if (dma_desc->status.b_isoc.sts == DMA_DESC_STS_PKTERR) {
+				/*
+				 * XactError or, unable to complete all the transactions
+				 * in the scheduled micro-frame/frame,
+				 * both indicated by DMA_DESC_STS_PKTERR.
+				 */
+				qtd->urb->error_count++;
+				frame_desc->actual_length = qh->n_bytes[idx] - remain;
+				frame_desc->status = -DWC_E_PROTOCOL;
+			} else {
+				/* Success */
+
+				frame_desc->actual_length = qh->n_bytes[idx] - remain;
+				frame_desc->status = 0;
+			}
+
+			if (++qtd->isoc_frame_index == qtd->urb->packet_count) {
+				/*
+				 * urb->status is not used for isoc transfers here.
+				 * The individual frame_desc status are used instead.
+				 */
+
+				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+				dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+
+				/*
+				 * This check is necessary because urb_dequeue can be called
+				 * from urb complete callback(sound driver example).
+				 * All pending URBs are dequeued there, so no need for
+				 * further processing.
+				 */
+				if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
+					return;
+				}
+
+				urb_compl = 1;
+
+			}
+
+			qh->ntd--;
+
+			/* Stop if IOC requested descriptor reached */
+			if (dma_desc->status.b_isoc.ioc) {
+				idx = desclist_idx_inc(idx, qh->interval, hc->speed);
+				goto stop_scan;
+			}
+
+			idx = desclist_idx_inc(idx, qh->interval, hc->speed);
+
+			if (urb_compl)
+				break;
+		}
+		while (idx != qh->td_first);
+	}
+stop_scan:
+	qh->td_first = idx;
+}
+
+uint8_t update_non_isoc_urb_state_ddma(dwc_otg_hcd_t * hcd,
+				       dwc_hc_t * hc,
+				       dwc_otg_qtd_t * qtd,
+				       dwc_otg_host_dma_desc_t * dma_desc,
+				       dwc_otg_halt_status_e halt_status,
+				       uint32_t n_bytes, uint8_t * xfer_done)
+{
+
+	uint16_t remain = hc->ep_is_in ? dma_desc->status.b.n_bytes : 0;
+	dwc_otg_hcd_urb_t *urb = qtd->urb;
+
+	if (halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
+		urb->status = -DWC_E_IO;
+		return 1;
+	}
+	if (dma_desc->status.b.sts == DMA_DESC_STS_PKTERR) {
+		switch (halt_status) {
+		case DWC_OTG_HC_XFER_STALL:
+			urb->status = -DWC_E_PIPE;
+			break;
+		case DWC_OTG_HC_XFER_BABBLE_ERR:
+			urb->status = -DWC_E_OVERFLOW;
+			break;
+		case DWC_OTG_HC_XFER_XACT_ERR:
+			urb->status = -DWC_E_PROTOCOL;
+			break;
+		default:
+			DWC_ERROR("%s: Unhandled descriptor error status (%d)\n", __func__,
+				  halt_status);
+			break;
+		}
+		return 1;
+	}
+
+	if (dma_desc->status.b.a == 1) {
+		DWC_DEBUGPL(DBG_HCDV,
+			    "Active descriptor encountered on channel %d\n",
+			    hc->hc_num);
+		return 0;
+	}
+
+	if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL) {
+		if (qtd->control_phase == DWC_OTG_CONTROL_DATA) {
+			urb->actual_length += n_bytes - remain;
+			if (remain || urb->actual_length == urb->length) {
+				/*
+				 * For Control Data stage do not set urb->status=0 to prevent
+				 * URB callback. Set it when Status phase done. See below.
+				 */
+				*xfer_done = 1;
+			}
+
+		} else if (qtd->control_phase == DWC_OTG_CONTROL_STATUS) {
+			urb->status = 0;
+			*xfer_done = 1;
+		}
+		/* No handling for SETUP stage */
+	} else {
+		/* BULK and INTR */
+		urb->actual_length += n_bytes - remain;
+		if (remain || urb->actual_length == urb->length) {
+			urb->status = 0;
+			*xfer_done = 1;
+		}
+	}
+
+	return 0;
+}
+
+static void complete_non_isoc_xfer_ddma(dwc_otg_hcd_t * hcd,
+					dwc_hc_t * hc,
+					dwc_otg_hc_regs_t * hc_regs,
+					dwc_otg_halt_status_e halt_status)
+{
+	dwc_otg_hcd_urb_t *urb = NULL;
+	dwc_otg_qtd_t *qtd, *qtd_tmp;
+	dwc_otg_qh_t *qh;
+	dwc_otg_host_dma_desc_t *dma_desc;
+	uint32_t n_bytes, n_desc, i;
+	uint8_t failed = 0, xfer_done;
+
+	n_desc = 0;
+
+	qh = hc->qh;
+
+	if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
+		DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry) {
+			qtd->in_process = 0;
+		}
+		return;
+	}
+
+	DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &qh->qtd_list, qtd_list_entry) {
+
+		urb = qtd->urb;
+
+		n_bytes = 0;
+		xfer_done = 0;
+
+		for (i = 0; i < qtd->n_desc; i++) {
+			dma_desc = &qh->desc_list[n_desc];
+
+			n_bytes = qh->n_bytes[n_desc];
+
+			failed =
+			    update_non_isoc_urb_state_ddma(hcd, hc, qtd,
+							   dma_desc,
+							   halt_status, n_bytes,
+							   &xfer_done);
+
+			if (failed
+			    || (xfer_done
+				&& (urb->status != -DWC_E_IN_PROGRESS))) {
+
+				hcd->fops->complete(hcd, urb->priv, urb,
+						    urb->status);
+				dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+
+				if (failed)
+					goto stop_scan;
+			} else if (qh->ep_type == UE_CONTROL) {
+				if (qtd->control_phase == DWC_OTG_CONTROL_SETUP) {
+					if (urb->length > 0) {
+						qtd->control_phase = DWC_OTG_CONTROL_DATA;
+					} else {
+						qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+					}
+					DWC_DEBUGPL(DBG_HCDV, "  Control setup transaction done\n");
+				} else if (qtd->control_phase == DWC_OTG_CONTROL_DATA) {
+					if (xfer_done) {
+						qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+						DWC_DEBUGPL(DBG_HCDV, "  Control data transfer done\n");
+					} else if (i + 1 == qtd->n_desc) {
+						/*
+						 * Last descriptor for Control data stage which is
+						 * not completed yet.
+						 */
+						dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+					}
+				}
+			}
+
+			n_desc++;
+		}
+
+	}
+
+stop_scan:
+
+	if (qh->ep_type != UE_CONTROL) {
+		/*
+		 * Resetting the data toggle for bulk
+		 * and interrupt endpoints in case of stall. See handle_hc_stall_intr()
+		 */
+		if (halt_status == DWC_OTG_HC_XFER_STALL)
+			qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+		else
+			dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+	}
+
+	if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
+		hcint_data_t hcint;
+		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+		if (hcint.b.nyet) {
+			/*
+			 * Got a NYET on the last transaction of the transfer. It
+			 * means that the endpoint should be in the PING state at the
+			 * beginning of the next transfer.
+			 */
+			qh->ping_state = 1;
+			clear_hc_int(hc_regs, nyet);
+		}
+
+	}
+
+}
+
+/**
+ * This function is called from interrupt handlers.
+ * Scans the descriptor list, updates URB's status and
+ * calls completion routine for the URB if it's done.
+ * Releases the channel to be used by other transfers.
+ * In case of Isochronous endpoint the channel is not halted until
+ * the end of the session, i.e. QTD list is empty.
+ * If periodic channel released the FrameList is updated accordingly.
+ *
+ * Calls transaction selection routines to activate pending transfers.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param hc Host channel, the transfer is completed on.
+ * @param hc_regs Host channel registers.
+ * @param halt_status Reason the channel is being halted,
+ *		      or just XferComplete for isochronous transfer
+ */
+void dwc_otg_hcd_complete_xfer_ddma(dwc_otg_hcd_t * hcd,
+				    dwc_hc_t * hc,
+				    dwc_otg_hc_regs_t * hc_regs,
+				    dwc_otg_halt_status_e halt_status)
+{
+	uint8_t continue_isoc_xfer = 0;
+	dwc_otg_transaction_type_e tr_type;
+	dwc_otg_qh_t *qh = hc->qh;
+
+	if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+
+		complete_isoc_xfer_ddma(hcd, hc, hc_regs, halt_status);
+
+		/* Release the channel if halted or session completed */
+		if (halt_status != DWC_OTG_HC_XFER_COMPLETE ||
+		    DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+
+			/* Halt the channel if session completed */
+			if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
+				dwc_otg_hc_halt(hcd->core_if, hc, halt_status);
+			}
+
+			release_channel_ddma(hcd, qh);
+			dwc_otg_hcd_qh_remove(hcd, qh);
+		} else {
+			/* Keep in assigned schedule to continue transfer */
+			DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
+					   &qh->qh_list_entry);
+			continue_isoc_xfer = 1;
+
+		}
+		/** @todo Consider the case when period exceeds FrameList size.
+		 *  Frame Rollover interrupt should be used.
+		 */
+	} else {
+		/* Scan descriptor list to complete the URB(s), then release the channel */
+		complete_non_isoc_xfer_ddma(hcd, hc, hc_regs, halt_status);
+
+		release_channel_ddma(hcd, qh);
+		dwc_otg_hcd_qh_remove(hcd, qh);
+
+		if (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+			/* Add back to inactive non-periodic schedule on normal completion */
+			dwc_otg_hcd_qh_add(hcd, qh);
+		}
+
+	}
+	tr_type = dwc_otg_hcd_select_transactions(hcd);
+	if (tr_type != DWC_OTG_TRANSACTION_NONE || continue_isoc_xfer) {
+		if (continue_isoc_xfer) {
+			if (tr_type == DWC_OTG_TRANSACTION_NONE) {
+				tr_type = DWC_OTG_TRANSACTION_PERIODIC;
+			} else if (tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC) {
+				tr_type = DWC_OTG_TRANSACTION_ALL;
+			}
+		}
+		dwc_otg_hcd_queue_transactions(hcd, tr_type);
+	}
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd.h	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,862 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.h $
+ * $Revision: #58 $
+ * $Date: 2011/09/15 $
+ * $Change: 1846647 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+#ifndef __DWC_HCD_H__
+#define __DWC_HCD_H__
+
+#include "dwc_otg_os_dep.h"
+#include "usb.h"
+#include "dwc_otg_hcd_if.h"
+#include "dwc_otg_core_if.h"
+#include "dwc_list.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_fiq_fsm.h"
+
+
+/**
+ * @file
+ *
+ * This file contains the structures, constants, and interfaces for
+ * the Host Contoller Driver (HCD).
+ *
+ * The Host Controller Driver (HCD) is responsible for translating requests
+ * from the USB Driver into the appropriate actions on the DWC_otg controller.
+ * It isolates the USBD from the specifics of the controller by providing an
+ * API to the USBD.
+ */
+
+struct dwc_otg_hcd_pipe_info {
+	uint8_t dev_addr;
+	uint8_t ep_num;
+	uint8_t pipe_type;
+	uint8_t pipe_dir;
+	uint16_t mps;
+};
+
+struct dwc_otg_hcd_iso_packet_desc {
+	uint32_t offset;
+	uint32_t length;
+	uint32_t actual_length;
+	uint32_t status;
+};
+
+struct dwc_otg_qtd;
+
+struct dwc_otg_hcd_urb {
+	void *priv;
+	struct dwc_otg_qtd *qtd;
+	void *buf;
+	dwc_dma_t dma;
+	void *setup_packet;
+	dwc_dma_t setup_dma;
+	uint32_t length;
+	uint32_t actual_length;
+	uint32_t status;
+	uint32_t error_count;
+	uint32_t packet_count;
+	uint32_t flags;
+	uint16_t interval;
+	struct dwc_otg_hcd_pipe_info pipe_info;
+	struct dwc_otg_hcd_iso_packet_desc iso_descs[0];
+};
+
+static inline uint8_t dwc_otg_hcd_get_ep_num(struct dwc_otg_hcd_pipe_info *pipe)
+{
+	return pipe->ep_num;
+}
+
+static inline uint8_t dwc_otg_hcd_get_pipe_type(struct dwc_otg_hcd_pipe_info
+						*pipe)
+{
+	return pipe->pipe_type;
+}
+
+static inline uint16_t dwc_otg_hcd_get_mps(struct dwc_otg_hcd_pipe_info *pipe)
+{
+	return pipe->mps;
+}
+
+static inline uint8_t dwc_otg_hcd_get_dev_addr(struct dwc_otg_hcd_pipe_info
+					       *pipe)
+{
+	return pipe->dev_addr;
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_isoc(struct dwc_otg_hcd_pipe_info
+					       *pipe)
+{
+	return (pipe->pipe_type == UE_ISOCHRONOUS);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_int(struct dwc_otg_hcd_pipe_info
+					      *pipe)
+{
+	return (pipe->pipe_type == UE_INTERRUPT);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_bulk(struct dwc_otg_hcd_pipe_info
+					       *pipe)
+{
+	return (pipe->pipe_type == UE_BULK);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_control(struct dwc_otg_hcd_pipe_info
+						  *pipe)
+{
+	return (pipe->pipe_type == UE_CONTROL);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_in(struct dwc_otg_hcd_pipe_info *pipe)
+{
+	return (pipe->pipe_dir == UE_DIR_IN);
+}
+
+static inline uint8_t dwc_otg_hcd_is_pipe_out(struct dwc_otg_hcd_pipe_info
+					      *pipe)
+{
+	return (!dwc_otg_hcd_is_pipe_in(pipe));
+}
+
+static inline void dwc_otg_hcd_fill_pipe(struct dwc_otg_hcd_pipe_info *pipe,
+					 uint8_t devaddr, uint8_t ep_num,
+					 uint8_t pipe_type, uint8_t pipe_dir,
+					 uint16_t mps)
+{
+	pipe->dev_addr = devaddr;
+	pipe->ep_num = ep_num;
+	pipe->pipe_type = pipe_type;
+	pipe->pipe_dir = pipe_dir;
+	pipe->mps = mps;
+}
+
+/**
+ * Phases for control transfers.
+ */
+typedef enum dwc_otg_control_phase {
+	DWC_OTG_CONTROL_SETUP,
+	DWC_OTG_CONTROL_DATA,
+	DWC_OTG_CONTROL_STATUS
+} dwc_otg_control_phase_e;
+
+/** Transaction types. */
+typedef enum dwc_otg_transaction_type {
+	DWC_OTG_TRANSACTION_NONE          = 0,
+	DWC_OTG_TRANSACTION_PERIODIC      = 1,
+	DWC_OTG_TRANSACTION_NON_PERIODIC  = 2,
+	DWC_OTG_TRANSACTION_ALL           = DWC_OTG_TRANSACTION_PERIODIC + DWC_OTG_TRANSACTION_NON_PERIODIC
+} dwc_otg_transaction_type_e;
+
+struct dwc_otg_qh;
+
+/**
+ * A Queue Transfer Descriptor (QTD) holds the state of a bulk, control,
+ * interrupt, or isochronous transfer. A single QTD is created for each URB
+ * (of one of these types) submitted to the HCD. The transfer associated with
+ * a QTD may require one or multiple transactions.
+ *
+ * A QTD is linked to a Queue Head, which is entered in either the
+ * non-periodic or periodic schedule for execution. When a QTD is chosen for
+ * execution, some or all of its transactions may be executed. After
+ * execution, the state of the QTD is updated. The QTD may be retired if all
+ * its transactions are complete or if an error occurred. Otherwise, it
+ * remains in the schedule so more transactions can be executed later.
+ */
+typedef struct dwc_otg_qtd {
+	/**
+	 * Determines the PID of the next data packet for the data phase of
+	 * control transfers. Ignored for other transfer types.<br>
+	 * One of the following values:
+	 *	- DWC_OTG_HC_PID_DATA0
+	 *	- DWC_OTG_HC_PID_DATA1
+	 */
+	uint8_t data_toggle;
+
+	/** Current phase for control transfers (Setup, Data, or Status). */
+	dwc_otg_control_phase_e control_phase;
+
+	/** Keep track of the current split type
+	 * for FS/LS endpoints on a HS Hub */
+	uint8_t complete_split;
+
+	/** How many bytes transferred during SSPLIT OUT */
+	uint32_t ssplit_out_xfer_count;
+
+	/**
+	 * Holds the number of bus errors that have occurred for a transaction
+	 * within this transfer.
+	 */
+	uint8_t error_count;
+
+	/**
+	 * Index of the next frame descriptor for an isochronous transfer. A
+	 * frame descriptor describes the buffer position and length of the
+	 * data to be transferred in the next scheduled (micro)frame of an
+	 * isochronous transfer. It also holds status for that transaction.
+	 * The frame index starts at 0.
+	 */
+	uint16_t isoc_frame_index;
+
+	/** Position of the ISOC split on full/low speed */
+	uint8_t isoc_split_pos;
+
+	/** Position of the ISOC split in the buffer for the current frame */
+	uint16_t isoc_split_offset;
+
+	/** URB for this transfer */
+	struct dwc_otg_hcd_urb *urb;
+
+	struct dwc_otg_qh *qh;
+
+	/** This list of QTDs */
+	 DWC_CIRCLEQ_ENTRY(dwc_otg_qtd) qtd_list_entry;
+
+	/** Indicates if this QTD is currently processed by HW. */
+	uint8_t in_process;
+
+	/** Number of DMA descriptors for this QTD */
+	uint8_t n_desc;
+
+	/**
+	 * Last activated frame(packet) index.
+	 * Used in Descriptor DMA mode only.
+	 */
+	uint16_t isoc_frame_index_last;
+
+} dwc_otg_qtd_t;
+
+DWC_CIRCLEQ_HEAD(dwc_otg_qtd_list, dwc_otg_qtd);
+
+/**
+ * A Queue Head (QH) holds the static characteristics of an endpoint and
+ * maintains a list of transfers (QTDs) for that endpoint. A QH structure may
+ * be entered in either the non-periodic or periodic schedule.
+ */
+typedef struct dwc_otg_qh {
+	/**
+	 * Endpoint type.
+	 * One of the following values:
+	 *	- UE_CONTROL
+	 *	- UE_BULK
+	 *	- UE_INTERRUPT
+	 *	- UE_ISOCHRONOUS
+	 */
+	uint8_t ep_type;
+	uint8_t ep_is_in;
+
+	/** wMaxPacketSize Field of Endpoint Descriptor. */
+	uint16_t maxp;
+
+	/**
+	 * Device speed.
+	 * One of the following values:
+	 *	- DWC_OTG_EP_SPEED_LOW
+	 *	- DWC_OTG_EP_SPEED_FULL
+	 *	- DWC_OTG_EP_SPEED_HIGH
+	 */
+	uint8_t dev_speed;
+
+	/**
+	 * Determines the PID of the next data packet for non-control
+	 * transfers. Ignored for control transfers.<br>
+	 * One of the following values:
+	 *	- DWC_OTG_HC_PID_DATA0
+	 *	- DWC_OTG_HC_PID_DATA1
+	 */
+	uint8_t data_toggle;
+
+	/** Ping state if 1. */
+	uint8_t ping_state;
+
+	/**
+	 * List of QTDs for this QH.
+	 */
+	struct dwc_otg_qtd_list qtd_list;
+
+	/** Host channel currently processing transfers for this QH. */
+	struct dwc_hc *channel;
+
+	/** Full/low speed endpoint on high-speed hub requires split. */
+	uint8_t do_split;
+
+	/** @name Periodic schedule information */
+	/** @{ */
+
+	/** Bandwidth in microseconds per (micro)frame. */
+	uint16_t usecs;
+
+	/** Interval between transfers in (micro)frames. */
+	uint16_t interval;
+
+	/**
+	 * (micro)frame to initialize a periodic transfer. The transfer
+	 * executes in the following (micro)frame.
+	 */
+	uint16_t sched_frame;
+
+	/*
+	** Frame a NAK was received on this queue head, used to minimise NAK retransmission
+	*/
+	uint16_t nak_frame;
+
+	/** (micro)frame at which last start split was initialized. */
+	uint16_t start_split_frame;
+
+	/** @} */
+
+	/**
+	 * Used instead of original buffer if
+	 * it(physical address) is not dword-aligned.
+	 */
+	uint8_t *dw_align_buf;
+	dwc_dma_t dw_align_buf_dma;
+
+	/** Entry for QH in either the periodic or non-periodic schedule. */
+	dwc_list_link_t qh_list_entry;
+
+	/** @name Descriptor DMA support */
+	/** @{ */
+
+	/** Descriptor List. */
+	dwc_otg_host_dma_desc_t *desc_list;
+
+	/** Descriptor List physical address. */
+	dwc_dma_t desc_list_dma;
+
+	/**
+	 * Xfer Bytes array.
+	 * Each element corresponds to a descriptor and indicates
+	 * original XferSize size value for the descriptor.
+	 */
+	uint32_t *n_bytes;
+
+	/** Actual number of transfer descriptors in a list. */
+	uint16_t ntd;
+
+	/** First activated isochronous transfer descriptor index. */
+	uint8_t td_first;
+	/** Last activated isochronous transfer descriptor index. */
+	uint8_t td_last;
+
+	/** @} */
+
+
+	uint16_t speed;
+	uint16_t frame_usecs[8];
+
+	uint32_t skip_count;
+} dwc_otg_qh_t;
+
+DWC_CIRCLEQ_HEAD(hc_list, dwc_hc);
+
+typedef struct urb_tq_entry {
+	struct urb *urb;
+	DWC_TAILQ_ENTRY(urb_tq_entry) urb_tq_entries;
+} urb_tq_entry_t;
+
+DWC_TAILQ_HEAD(urb_list, urb_tq_entry);
+
+/**
+ * This structure holds the state of the HCD, including the non-periodic and
+ * periodic schedules.
+ */
+struct dwc_otg_hcd {
+	/** The DWC otg device pointer */
+	struct dwc_otg_device *otg_dev;
+	/** DWC OTG Core Interface Layer */
+	dwc_otg_core_if_t *core_if;
+
+	/** Function HCD driver callbacks */
+	struct dwc_otg_hcd_function_ops *fops;
+
+	/** Internal DWC HCD Flags */
+	volatile union dwc_otg_hcd_internal_flags {
+		uint32_t d32;
+		struct {
+			unsigned port_connect_status_change:1;
+			unsigned port_connect_status:1;
+			unsigned port_reset_change:1;
+			unsigned port_enable_change:1;
+			unsigned port_suspend_change:1;
+			unsigned port_over_current_change:1;
+			unsigned port_l1_change:1;
+			unsigned reserved:26;
+		} b;
+	} flags;
+
+	/**
+	 * Inactive items in the non-periodic schedule. This is a list of
+	 * Queue Heads. Transfers associated with these Queue Heads are not
+	 * currently assigned to a host channel.
+	 */
+	dwc_list_link_t non_periodic_sched_inactive;
+
+	/**
+	 * Active items in the non-periodic schedule. This is a list of
+	 * Queue Heads. Transfers associated with these Queue Heads are
+	 * currently assigned to a host channel.
+	 */
+	dwc_list_link_t non_periodic_sched_active;
+
+	/**
+	 * Pointer to the next Queue Head to process in the active
+	 * non-periodic schedule.
+	 */
+	dwc_list_link_t *non_periodic_qh_ptr;
+
+	/**
+	 * Inactive items in the periodic schedule. This is a list of QHs for
+	 * periodic transfers that are _not_ scheduled for the next frame.
+	 * Each QH in the list has an interval counter that determines when it
+	 * needs to be scheduled for execution. This scheduling mechanism
+	 * allows only a simple calculation for periodic bandwidth used (i.e.
+	 * must assume that all periodic transfers may need to execute in the
+	 * same frame). However, it greatly simplifies scheduling and should
+	 * be sufficient for the vast majority of OTG hosts, which need to
+	 * connect to a small number of peripherals at one time.
+	 *
+	 * Items move from this list to periodic_sched_ready when the QH
+	 * interval counter is 0 at SOF.
+	 */
+	dwc_list_link_t periodic_sched_inactive;
+
+	/**
+	 * List of periodic QHs that are ready for execution in the next
+	 * frame, but have not yet been assigned to host channels.
+	 *
+	 * Items move from this list to periodic_sched_assigned as host
+	 * channels become available during the current frame.
+	 */
+	dwc_list_link_t periodic_sched_ready;
+
+	/**
+	 * List of periodic QHs to be executed in the next frame that are
+	 * assigned to host channels.
+	 *
+	 * Items move from this list to periodic_sched_queued as the
+	 * transactions for the QH are queued to the DWC_otg controller.
+	 */
+	dwc_list_link_t periodic_sched_assigned;
+
+	/**
+	 * List of periodic QHs that have been queued for execution.
+	 *
+	 * Items move from this list to either periodic_sched_inactive or
+	 * periodic_sched_ready when the channel associated with the transfer
+	 * is released. If the interval for the QH is 1, the item moves to
+	 * periodic_sched_ready because it must be rescheduled for the next
+	 * frame. Otherwise, the item moves to periodic_sched_inactive.
+	 */
+	dwc_list_link_t periodic_sched_queued;
+
+	/**
+	 * Total bandwidth claimed so far for periodic transfers. This value
+	 * is in microseconds per (micro)frame. The assumption is that all
+	 * periodic transfers may occur in the same (micro)frame.
+	 */
+	uint16_t periodic_usecs;
+
+	/**
+	 * Total bandwidth claimed so far for all periodic transfers
+	 * in a frame.
+	 * This will include a mixture of HS and FS transfers.
+	 * Units are microseconds per (micro)frame.
+	 * We have a budget per frame and have to schedule
+	 * transactions accordingly.
+	 * Watch out for the fact that things are actually scheduled for the
+	 * "next frame".
+	 */
+	uint16_t                frame_usecs[8];
+
+
+	/**
+	 * Frame number read from the core at SOF. The value ranges from 0 to
+	 * DWC_HFNUM_MAX_FRNUM.
+	 */
+	uint16_t frame_number;
+
+	/**
+	 * Count of periodic QHs, if using several eps. For SOF enable/disable.
+	 */
+	uint16_t periodic_qh_count;
+
+	/**
+	 * Free host channels in the controller. This is a list of
+	 * dwc_hc_t items.
+	 */
+	struct hc_list free_hc_list;
+	/**
+	 * Number of host channels assigned to periodic transfers. Currently
+	 * assuming that there is a dedicated host channel for each periodic
+	 * transaction and at least one host channel available for
+	 * non-periodic transactions.
+	 */
+	int periodic_channels; /* microframe_schedule==0 */
+
+	/**
+	 * Number of host channels assigned to non-periodic transfers.
+	 */
+	int non_periodic_channels; /* microframe_schedule==0 */
+
+	/**
+	 * Number of host channels assigned to non-periodic transfers.
+	 */
+	int available_host_channels;
+
+	/**
+	 * Array of pointers to the host channel descriptors. Allows accessing
+	 * a host channel descriptor given the host channel number. This is
+	 * useful in interrupt handlers.
+	 */
+	struct dwc_hc *hc_ptr_array[MAX_EPS_CHANNELS];
+
+	/**
+	 * Buffer to use for any data received during the status phase of a
+	 * control transfer. Normally no data is transferred during the status
+	 * phase. This buffer is used as a bit bucket.
+	 */
+	uint8_t *status_buf;
+
+	/**
+	 * DMA address for status_buf.
+	 */
+	dma_addr_t status_buf_dma;
+#define DWC_OTG_HCD_STATUS_BUF_SIZE 64
+
+	/**
+	 * Connection timer. An OTG host must display a message if the device
+	 * does not connect. Started when the VBus power is turned on via
+	 * sysfs attribute "buspower".
+	 */
+	dwc_timer_t *conn_timer;
+
+	/* Tasket to do a reset */
+	dwc_tasklet_t *reset_tasklet;
+
+	dwc_tasklet_t *completion_tasklet;
+	struct urb_list completed_urb_list;
+
+	/*  */
+	dwc_spinlock_t *lock;
+	dwc_spinlock_t *channel_lock;
+	/**
+	 * Private data that could be used by OS wrapper.
+	 */
+	void *priv;
+
+	uint8_t otg_port;
+
+	/** Frame List */
+	uint32_t *frame_list;
+
+	/** Hub - Port assignment */
+	int hub_port[128];
+#ifdef FIQ_DEBUG
+	int hub_port_alloc[2048];
+#endif
+
+	/** Frame List DMA address */
+	dma_addr_t frame_list_dma;
+
+	struct fiq_stack *fiq_stack;
+	struct fiq_state *fiq_state;
+	
+	/** Virtual address for split transaction DMA bounce buffers */
+	struct fiq_dma_blob *fiq_dmab;
+	
+#ifdef DEBUG
+	uint32_t frrem_samples;
+	uint64_t frrem_accum;
+
+	uint32_t hfnum_7_samples_a;
+	uint64_t hfnum_7_frrem_accum_a;
+	uint32_t hfnum_0_samples_a;
+	uint64_t hfnum_0_frrem_accum_a;
+	uint32_t hfnum_other_samples_a;
+	uint64_t hfnum_other_frrem_accum_a;
+
+	uint32_t hfnum_7_samples_b;
+	uint64_t hfnum_7_frrem_accum_b;
+	uint32_t hfnum_0_samples_b;
+	uint64_t hfnum_0_frrem_accum_b;
+	uint32_t hfnum_other_samples_b;
+	uint64_t hfnum_other_frrem_accum_b;
+#endif
+};
+
+/** @name Transaction Execution Functions */
+/** @{ */
+extern dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t
+								  * hcd);
+extern void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t * hcd,
+					   dwc_otg_transaction_type_e tr_type);
+
+int dwc_otg_hcd_allocate_port(dwc_otg_hcd_t * hcd, dwc_otg_qh_t *qh);
+void dwc_otg_hcd_release_port(dwc_otg_hcd_t * dwc_otg_hcd, dwc_otg_qh_t *qh);
+
+extern int fiq_fsm_queue_transaction(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh);
+extern int fiq_fsm_transaction_suitable(dwc_otg_qh_t *qh);
+extern void dwc_otg_cleanup_fiq_channel(dwc_otg_hcd_t *hcd, uint32_t num);
+
+/** @} */
+
+/** @name Interrupt Handler Functions */
+/** @{ */
+extern int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd_t *
+							 dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd_t *
+							dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t *
+							   dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_incomplete_periodic_intr(dwc_otg_hcd_t *
+							   dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_conn_id_status_change_intr(dwc_otg_hcd_t *
+							     dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_disconnect_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd_t * dwc_otg_hcd,
+					    uint32_t num);
+extern int32_t dwc_otg_hcd_handle_session_req_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_wakeup_detected_intr(dwc_otg_hcd_t *
+						       dwc_otg_hcd);
+/** @} */
+
+/** @name Schedule Queue Functions */
+/** @{ */
+
+/* Implemented in dwc_otg_hcd_queue.c */
+extern dwc_otg_qh_t *dwc_otg_hcd_qh_create(dwc_otg_hcd_t * hcd,
+					   dwc_otg_hcd_urb_t * urb, int atomic_alloc);
+extern void dwc_otg_hcd_qh_free(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern void dwc_otg_hcd_qh_remove(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
+				      int sched_csplit);
+
+/** Remove and free a QH */
+static inline void dwc_otg_hcd_qh_remove_and_free(dwc_otg_hcd_t * hcd,
+						  dwc_otg_qh_t * qh)
+{
+	dwc_irqflags_t flags;
+	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+	dwc_otg_hcd_qh_remove(hcd, qh);
+	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+	dwc_otg_hcd_qh_free(hcd, qh);
+}
+
+/** Allocates memory for a QH structure.
+ * @return Returns the memory allocate or NULL on error. */
+static inline dwc_otg_qh_t *dwc_otg_hcd_qh_alloc(int atomic_alloc)
+{
+	if (atomic_alloc)
+		return (dwc_otg_qh_t *) DWC_ALLOC_ATOMIC(sizeof(dwc_otg_qh_t));
+	else
+		return (dwc_otg_qh_t *) DWC_ALLOC(sizeof(dwc_otg_qh_t));
+}
+
+extern dwc_otg_qtd_t *dwc_otg_hcd_qtd_create(dwc_otg_hcd_urb_t * urb,
+					     int atomic_alloc);
+extern void dwc_otg_hcd_qtd_init(dwc_otg_qtd_t * qtd, dwc_otg_hcd_urb_t * urb);
+extern int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t * qtd, dwc_otg_hcd_t * dwc_otg_hcd,
+			       dwc_otg_qh_t ** qh, int atomic_alloc);
+
+/** Allocates memory for a QTD structure.
+ * @return Returns the memory allocate or NULL on error. */
+static inline dwc_otg_qtd_t *dwc_otg_hcd_qtd_alloc(int atomic_alloc)
+{
+	if (atomic_alloc)
+		return (dwc_otg_qtd_t *) DWC_ALLOC_ATOMIC(sizeof(dwc_otg_qtd_t));
+	else
+		return (dwc_otg_qtd_t *) DWC_ALLOC(sizeof(dwc_otg_qtd_t));
+}
+
+/** Frees the memory for a QTD structure.  QTD should already be removed from
+ * list.
+ * @param qtd QTD to free.*/
+static inline void dwc_otg_hcd_qtd_free(dwc_otg_qtd_t * qtd)
+{
+	DWC_FREE(qtd);
+}
+
+/** Removes a QTD from list.
+ * @param hcd HCD instance.
+ * @param qtd QTD to remove from list.
+ * @param qh QTD belongs to.
+ */
+static inline void dwc_otg_hcd_qtd_remove(dwc_otg_hcd_t * hcd,
+					  dwc_otg_qtd_t * qtd,
+					  dwc_otg_qh_t * qh)
+{
+	DWC_CIRCLEQ_REMOVE(&qh->qtd_list, qtd, qtd_list_entry);
+}
+
+/** Remove and free a QTD
+  * Need to disable IRQ and hold hcd lock while calling this function out of
+  * interrupt servicing chain */
+static inline void dwc_otg_hcd_qtd_remove_and_free(dwc_otg_hcd_t * hcd,
+						   dwc_otg_qtd_t * qtd,
+						   dwc_otg_qh_t * qh)
+{
+	dwc_otg_hcd_qtd_remove(hcd, qtd, qh);
+	dwc_otg_hcd_qtd_free(qtd);
+}
+
+/** @} */
+
+/** @name Descriptor DMA Supporting Functions */
+/** @{ */
+
+extern void dwc_otg_hcd_start_xfer_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern void dwc_otg_hcd_complete_xfer_ddma(dwc_otg_hcd_t * hcd,
+					   dwc_hc_t * hc,
+					   dwc_otg_hc_regs_t * hc_regs,
+					   dwc_otg_halt_status_e halt_status);
+
+extern int dwc_otg_hcd_qh_init_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+extern void dwc_otg_hcd_qh_free_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
+
+/** @} */
+
+/** @name Internal Functions */
+/** @{ */
+dwc_otg_qh_t *dwc_urb_to_qh(dwc_otg_hcd_urb_t * urb);
+/** @} */
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+extern int dwc_otg_hcd_get_hc_for_lpm_tran(dwc_otg_hcd_t * hcd,
+					   uint8_t devaddr);
+extern void dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd_t * hcd);
+#endif
+
+/** Gets the QH that contains the list_head */
+#define dwc_list_to_qh(_list_head_ptr_) container_of(_list_head_ptr_, dwc_otg_qh_t, qh_list_entry)
+
+/** Gets the QTD that contains the list_head */
+#define dwc_list_to_qtd(_list_head_ptr_) container_of(_list_head_ptr_, dwc_otg_qtd_t, qtd_list_entry)
+
+/** Check if QH is non-periodic  */
+#define dwc_qh_is_non_per(_qh_ptr_) ((_qh_ptr_->ep_type == UE_BULK) || \
+				     (_qh_ptr_->ep_type == UE_CONTROL))
+
+/** High bandwidth multiplier as encoded in highspeed endpoint descriptors */
+#define dwc_hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
+
+/** Packet size for any kind of endpoint descriptor */
+#define dwc_max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
+
+/**
+ * Returns true if _frame1 is less than or equal to _frame2. The comparison is
+ * done modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the
+ * frame number when the max frame number is reached.
+ */
+static inline int dwc_frame_num_le(uint16_t frame1, uint16_t frame2)
+{
+	return ((frame2 - frame1) & DWC_HFNUM_MAX_FRNUM) <=
+	    (DWC_HFNUM_MAX_FRNUM >> 1);
+}
+
+/**
+ * Returns true if _frame1 is greater than _frame2. The comparison is done
+ * modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the frame
+ * number when the max frame number is reached.
+ */
+static inline int dwc_frame_num_gt(uint16_t frame1, uint16_t frame2)
+{
+	return (frame1 != frame2) &&
+	    (((frame1 - frame2) & DWC_HFNUM_MAX_FRNUM) <
+	     (DWC_HFNUM_MAX_FRNUM >> 1));
+}
+
+/**
+ * Increments _frame by the amount specified by _inc. The addition is done
+ * modulo DWC_HFNUM_MAX_FRNUM. Returns the incremented value.
+ */
+static inline uint16_t dwc_frame_num_inc(uint16_t frame, uint16_t inc)
+{
+	return (frame + inc) & DWC_HFNUM_MAX_FRNUM;
+}
+
+static inline uint16_t dwc_full_frame_num(uint16_t frame)
+{
+	return (frame & DWC_HFNUM_MAX_FRNUM) >> 3;
+}
+
+static inline uint16_t dwc_micro_frame_num(uint16_t frame)
+{
+	return frame & 0x7;
+}
+
+void dwc_otg_hcd_save_data_toggle(dwc_hc_t * hc,
+				  dwc_otg_hc_regs_t * hc_regs,
+				  dwc_otg_qtd_t * qtd);
+
+#ifdef DEBUG
+/**
+ * Macro to sample the remaining PHY clocks left in the current frame. This
+ * may be used during debugging to determine the average time it takes to
+ * execute sections of code. There are two possible sample points, "a" and
+ * "b", so the _letter argument must be one of these values.
+ *
+ * To dump the average sample times, read the "hcd_frrem" sysfs attribute. For
+ * example, "cat /sys/devices/lm0/hcd_frrem".
+ */
+#define dwc_sample_frrem(_hcd, _qh, _letter) \
+{ \
+	hfnum_data_t hfnum; \
+	dwc_otg_qtd_t *qtd; \
+	qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry); \
+	if (usb_pipeint(qtd->urb->pipe) && _qh->start_split_frame != 0 && !qtd->complete_split) { \
+		hfnum.d32 = DWC_READ_REG32(&_hcd->core_if->host_if->host_global_regs->hfnum); \
+		switch (hfnum.b.frnum & 0x7) { \
+		case 7: \
+			_hcd->hfnum_7_samples_##_letter++; \
+			_hcd->hfnum_7_frrem_accum_##_letter += hfnum.b.frrem; \
+			break; \
+		case 0: \
+			_hcd->hfnum_0_samples_##_letter++; \
+			_hcd->hfnum_0_frrem_accum_##_letter += hfnum.b.frrem; \
+			break; \
+		default: \
+			_hcd->hfnum_other_samples_##_letter++; \
+			_hcd->hfnum_other_frrem_accum_##_letter += hfnum.b.frrem; \
+			break; \
+		} \
+	} \
+}
+#else
+#define dwc_sample_frrem(_hcd, _qh, _letter)
+#endif
+#endif
+#endif /* DWC_DEVICE_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,417 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_if.h $
+ * $Revision: #12 $
+ * $Date: 2011/10/26 $
+ * $Change: 1873028 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+#ifndef __DWC_HCD_IF_H__
+#define __DWC_HCD_IF_H__
+
+#include "dwc_otg_core_if.h"
+
+/** @file
+ * This file defines DWC_OTG HCD Core API.
+ */
+
+struct dwc_otg_hcd;
+typedef struct dwc_otg_hcd dwc_otg_hcd_t;
+
+struct dwc_otg_hcd_urb;
+typedef struct dwc_otg_hcd_urb dwc_otg_hcd_urb_t;
+
+/** @name HCD Function Driver Callbacks */
+/** @{ */
+
+/** This function is called whenever core switches to host mode. */
+typedef int (*dwc_otg_hcd_start_cb_t) (dwc_otg_hcd_t * hcd);
+
+/** This function is called when device has been disconnected */
+typedef int (*dwc_otg_hcd_disconnect_cb_t) (dwc_otg_hcd_t * hcd);
+
+/** Wrapper provides this function to HCD to core, so it can get hub information to which device is connected */
+typedef int (*dwc_otg_hcd_hub_info_from_urb_cb_t) (dwc_otg_hcd_t * hcd,
+						   void *urb_handle,
+						   uint32_t * hub_addr,
+						   uint32_t * port_addr);
+/** Via this function HCD core gets device speed */
+typedef int (*dwc_otg_hcd_speed_from_urb_cb_t) (dwc_otg_hcd_t * hcd,
+						void *urb_handle);
+
+/** This function is called when urb is completed */
+typedef int (*dwc_otg_hcd_complete_urb_cb_t) (dwc_otg_hcd_t * hcd,
+					      void *urb_handle,
+					      dwc_otg_hcd_urb_t * dwc_otg_urb,
+					      int32_t status);
+
+/** Via this function HCD core gets b_hnp_enable parameter */
+typedef int (*dwc_otg_hcd_get_b_hnp_enable) (dwc_otg_hcd_t * hcd);
+
+struct dwc_otg_hcd_function_ops {
+	dwc_otg_hcd_start_cb_t start;
+	dwc_otg_hcd_disconnect_cb_t disconnect;
+	dwc_otg_hcd_hub_info_from_urb_cb_t hub_info;
+	dwc_otg_hcd_speed_from_urb_cb_t speed;
+	dwc_otg_hcd_complete_urb_cb_t complete;
+	dwc_otg_hcd_get_b_hnp_enable get_b_hnp_enable;
+};
+/** @} */
+
+/** @name HCD Core API */
+/** @{ */
+/** This function allocates dwc_otg_hcd structure and returns pointer on it. */
+extern dwc_otg_hcd_t *dwc_otg_hcd_alloc_hcd(void);
+
+/** This function should be called to initiate HCD Core.
+ *
+ * @param hcd The HCD
+ * @param core_if The DWC_OTG Core
+ *
+ * Returns -DWC_E_NO_MEMORY if no enough memory.
+ * Returns 0 on success
+ */
+extern int dwc_otg_hcd_init(dwc_otg_hcd_t * hcd, dwc_otg_core_if_t * core_if);
+
+/** Frees HCD
+ *
+ * @param hcd The HCD
+ */
+extern void dwc_otg_hcd_remove(dwc_otg_hcd_t * hcd);
+
+/** This function should be called on every hardware interrupt.
+ *
+ * @param dwc_otg_hcd The HCD
+ *
+ * Returns non zero if interrupt is handled
+ * Return 0 if interrupt is not handled
+ */
+extern int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd);
+
+/** This function is used to handle the fast interrupt
+ *
+ */
+extern void __attribute__ ((naked)) dwc_otg_hcd_handle_fiq(void);
+
+/**
+ * Returns private data set by
+ * dwc_otg_hcd_set_priv_data function.
+ *
+ * @param hcd The HCD
+ */
+extern void *dwc_otg_hcd_get_priv_data(dwc_otg_hcd_t * hcd);
+
+/**
+ * Set private data.
+ *
+ * @param hcd The HCD
+ * @param priv_data pointer to be stored in private data
+ */
+extern void dwc_otg_hcd_set_priv_data(dwc_otg_hcd_t * hcd, void *priv_data);
+
+/**
+ * This function initializes the HCD Core.
+ *
+ * @param hcd The HCD
+ * @param fops The Function Driver Operations data structure containing pointers to all callbacks.
+ *
+ * Returns -DWC_E_NO_DEVICE if Core is currently is in device mode.
+ * Returns 0 on success
+ */
+extern int dwc_otg_hcd_start(dwc_otg_hcd_t * hcd,
+			     struct dwc_otg_hcd_function_ops *fops);
+
+/**
+ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
+ * stopped.
+ *
+ * @param hcd The HCD
+ */
+extern void dwc_otg_hcd_stop(dwc_otg_hcd_t * hcd);
+
+/**
+ * Handles hub class-specific requests.
+ *
+ * @param dwc_otg_hcd The HCD
+ * @param typeReq Request Type
+ * @param wValue wValue from control request
+ * @param wIndex wIndex from control request
+ * @param buf data buffer
+ * @param wLength data buffer length
+ *
+ * Returns -DWC_E_INVALID if invalid argument is passed
+ * Returns 0 on success
+ */
+extern int dwc_otg_hcd_hub_control(dwc_otg_hcd_t * dwc_otg_hcd,
+				   uint16_t typeReq, uint16_t wValue,
+				   uint16_t wIndex, uint8_t * buf,
+				   uint16_t wLength);
+
+/**
+ * Returns otg port number.
+ *
+ * @param hcd The HCD
+ */
+extern uint32_t dwc_otg_hcd_otg_port(dwc_otg_hcd_t * hcd);
+
+/**
+ * Returns OTG version - either 1.3 or 2.0.
+ *
+ * @param core_if The core_if structure pointer
+ */
+extern uint16_t dwc_otg_get_otg_version(dwc_otg_core_if_t * core_if);
+
+/**
+ * Returns 1 if currently core is acting as B host, and 0 otherwise.
+ *
+ * @param hcd The HCD
+ */
+extern uint32_t dwc_otg_hcd_is_b_host(dwc_otg_hcd_t * hcd);
+
+/**
+ * Returns current frame number.
+ *
+ * @param hcd The HCD
+ */
+extern int dwc_otg_hcd_get_frame_number(dwc_otg_hcd_t * hcd);
+
+/**
+ * Dumps hcd state.
+ *
+ * @param hcd The HCD
+ */
+extern void dwc_otg_hcd_dump_state(dwc_otg_hcd_t * hcd);
+
+/**
+ * Dump the average frame remaining at SOF. This can be used to
+ * determine average interrupt latency. Frame remaining is also shown for
+ * start transfer and two additional sample points.
+ * Currently this function is not implemented.
+ *
+ * @param hcd The HCD
+ */
+extern void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t * hcd);
+
+/**
+ * Sends LPM transaction to the local device.
+ *
+ * @param hcd The HCD
+ * @param devaddr Device Address
+ * @param hird Host initiated resume duration
+ * @param bRemoteWake Value of bRemoteWake field in LPM transaction
+ *
+ * Returns negative value if sending LPM transaction was not succeeded.
+ * Returns 0 on success.
+ */
+extern int dwc_otg_hcd_send_lpm(dwc_otg_hcd_t * hcd, uint8_t devaddr,
+				uint8_t hird, uint8_t bRemoteWake);
+
+/* URB interface */
+
+/**
+ * Allocates memory for dwc_otg_hcd_urb structure.
+ * Allocated memory should be freed by call of DWC_FREE.
+ *
+ * @param hcd The HCD
+ * @param iso_desc_count Count of ISOC descriptors
+ * @param atomic_alloc Specefies whether to perform atomic allocation.
+ */
+extern dwc_otg_hcd_urb_t *dwc_otg_hcd_urb_alloc(dwc_otg_hcd_t * hcd,
+						int iso_desc_count,
+						int atomic_alloc);
+
+/**
+ * Set pipe information in URB.
+ *
+ * @param hcd_urb DWC_OTG URB
+ * @param devaddr Device Address
+ * @param ep_num Endpoint Number
+ * @param ep_type Endpoint Type
+ * @param ep_dir Endpoint Direction
+ * @param mps Max Packet Size
+ */
+extern void dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_hcd_urb_t * hcd_urb,
+					 uint8_t devaddr, uint8_t ep_num,
+					 uint8_t ep_type, uint8_t ep_dir,
+					 uint16_t mps);
+
+/* Transfer flags */
+#define URB_GIVEBACK_ASAP 0x1
+#define URB_SEND_ZERO_PACKET 0x2
+
+/**
+ * Sets dwc_otg_hcd_urb parameters.
+ *
+ * @param urb DWC_OTG URB allocated by dwc_otg_hcd_urb_alloc function.
+ * @param urb_handle Unique handle for request, this will be passed back
+ * to function driver in completion callback.
+ * @param buf The buffer for the data
+ * @param dma The DMA buffer for the data
+ * @param buflen Transfer length
+ * @param sp Buffer for setup data
+ * @param sp_dma DMA address of setup data buffer
+ * @param flags Transfer flags
+ * @param interval Polling interval for interrupt or isochronous transfers.
+ */
+extern void dwc_otg_hcd_urb_set_params(dwc_otg_hcd_urb_t * urb,
+				       void *urb_handle, void *buf,
+				       dwc_dma_t dma, uint32_t buflen, void *sp,
+				       dwc_dma_t sp_dma, uint32_t flags,
+				       uint16_t interval);
+
+/** Gets status from dwc_otg_hcd_urb
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ */
+extern uint32_t dwc_otg_hcd_urb_get_status(dwc_otg_hcd_urb_t * dwc_otg_urb);
+
+/** Gets actual length from dwc_otg_hcd_urb
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ */
+extern uint32_t dwc_otg_hcd_urb_get_actual_length(dwc_otg_hcd_urb_t *
+						  dwc_otg_urb);
+
+/** Gets error count from dwc_otg_hcd_urb. Only for ISOC URBs
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ */
+extern uint32_t dwc_otg_hcd_urb_get_error_count(dwc_otg_hcd_urb_t *
+						dwc_otg_urb);
+
+/** Set ISOC descriptor offset and length
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ * @param desc_num ISOC descriptor number
+ * @param offset Offset from beginig of buffer.
+ * @param length Transaction length
+ */
+extern void dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
+						int desc_num, uint32_t offset,
+						uint32_t length);
+
+/** Get status of ISOC descriptor, specified by desc_num
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ * @param desc_num ISOC descriptor number
+ */
+extern uint32_t dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_hcd_urb_t *
+						    dwc_otg_urb, int desc_num);
+
+/** Get actual length of ISOC descriptor, specified by desc_num
+ *
+ * @param dwc_otg_urb DWC_OTG URB
+ * @param desc_num ISOC descriptor number
+ */
+extern uint32_t dwc_otg_hcd_urb_get_iso_desc_actual_length(dwc_otg_hcd_urb_t *
+							   dwc_otg_urb,
+							   int desc_num);
+
+/** Queue URB. After transfer is completes, the complete callback will be called with the URB status
+ *
+ * @param dwc_otg_hcd The HCD
+ * @param dwc_otg_urb DWC_OTG URB
+ * @param ep_handle Out parameter for returning endpoint handle
+ * @param atomic_alloc Flag to do atomic allocation if needed
+ *
+ * Returns -DWC_E_NO_DEVICE if no device is connected.
+ * Returns -DWC_E_NO_MEMORY if there is no enough memory.
+ * Returns 0 on success.
+ */
+extern int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_t * dwc_otg_hcd,
+				   dwc_otg_hcd_urb_t * dwc_otg_urb,
+				   void **ep_handle, int atomic_alloc);
+
+/** De-queue the specified URB
+ *
+ * @param dwc_otg_hcd The HCD
+ * @param dwc_otg_urb DWC_OTG URB
+ */
+extern int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_t * dwc_otg_hcd,
+				   dwc_otg_hcd_urb_t * dwc_otg_urb);
+
+/** Frees resources in the DWC_otg controller related to a given endpoint.
+ * Any URBs for the endpoint must already be dequeued.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle, returned by dwc_otg_hcd_urb_enqueue function
+ * @param retry Number of retries if there are queued transfers.
+ *
+ * Returns -DWC_E_INVALID if invalid arguments are passed.
+ * Returns 0 on success
+ */
+extern int dwc_otg_hcd_endpoint_disable(dwc_otg_hcd_t * hcd, void *ep_handle,
+					int retry);
+
+/* Resets the data toggle in qh structure. This function can be called from
+ * usb_clear_halt routine.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle, returned by dwc_otg_hcd_urb_enqueue function
+ *
+ * Returns -DWC_E_INVALID if invalid arguments are passed.
+ * Returns 0 on success
+ */
+extern int dwc_otg_hcd_endpoint_reset(dwc_otg_hcd_t * hcd, void *ep_handle);
+
+/** Returns 1 if status of specified port is changed and 0 otherwise.
+ *
+ * @param hcd The HCD
+ * @param port Port number
+ */
+extern int dwc_otg_hcd_is_status_changed(dwc_otg_hcd_t * hcd, int port);
+
+/** Call this function to check if bandwidth was allocated for specified endpoint.
+ * Only for ISOC and INTERRUPT endpoints.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle
+ */
+extern int dwc_otg_hcd_is_bandwidth_allocated(dwc_otg_hcd_t * hcd,
+					      void *ep_handle);
+
+/** Call this function to check if bandwidth was freed for specified endpoint.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle
+ */
+extern int dwc_otg_hcd_is_bandwidth_freed(dwc_otg_hcd_t * hcd, void *ep_handle);
+
+/** Returns bandwidth allocated for specified endpoint in microseconds.
+ * Only for ISOC and INTERRUPT endpoints.
+ *
+ * @param hcd The HCD
+ * @param ep_handle Endpoint handle
+ */
+extern uint8_t dwc_otg_hcd_get_ep_bandwidth(dwc_otg_hcd_t * hcd,
+					    void *ep_handle);
+
+/** @} */
+
+#endif /* __DWC_HCD_IF_H__ */
+#endif /* DWC_DEVICE_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,2713 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_intr.c $
+ * $Revision: #89 $
+ * $Date: 2011/10/20 $
+ * $Change: 1869487 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+#include <linux/jiffies.h>
+#include <mach/hardware.h>
+#include <asm/fiq.h>
+
+
+extern bool microframe_schedule;
+
+/** @file
+ * This file contains the implementation of the HCD Interrupt handlers.
+ */
+
+int fiq_done, int_done;
+
+#ifdef FIQ_DEBUG
+char buffer[1000*16];
+int wptr;
+void notrace _fiq_print(FIQDBG_T dbg_lvl, char *fmt, ...)
+{
+	FIQDBG_T dbg_lvl_req = FIQDBG_PORTHUB;
+	va_list args;
+	char text[17];
+	hfnum_data_t hfnum = { .d32 = FIQ_READ(dwc_regs_base + 0x408) };
+
+	if(dbg_lvl & dbg_lvl_req || dbg_lvl == FIQDBG_ERR)
+	{
+		local_fiq_disable();
+		snprintf(text, 9, "%4d%d:%d ", hfnum.b.frnum/8, hfnum.b.frnum%8, 8 - hfnum.b.frrem/937);
+		va_start(args, fmt);
+		vsnprintf(text+8, 9, fmt, args);
+		va_end(args);
+
+		memcpy(buffer + wptr, text, 16);
+		wptr = (wptr + 16) % sizeof(buffer);
+		local_fiq_enable();
+	}
+}
+#endif
+
+/** This function handles interrupts for the HCD. */
+int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+	int retval = 0;
+	static int last_time;
+	dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+	gintsts_data_t gintsts;
+	gintmsk_data_t gintmsk;
+	hfnum_data_t hfnum;
+	haintmsk_data_t haintmsk;
+
+#ifdef DEBUG
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+
+#endif
+
+	gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+	gintmsk.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+
+	/* Exit from ISR if core is hibernated */
+	if (core_if->hibernation_suspend == 1) {
+		goto exit_handler_routine;
+	}
+	DWC_SPINLOCK(dwc_otg_hcd->lock);
+	/* Check if HOST Mode */
+	if (dwc_otg_is_host_mode(core_if)) {
+		if (fiq_enable) {
+			local_fiq_disable();
+			fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
+			/* Pull in from the FIQ's disabled mask */
+			gintmsk.d32 = gintmsk.d32 | ~(dwc_otg_hcd->fiq_state->gintmsk_saved.d32);
+			dwc_otg_hcd->fiq_state->gintmsk_saved.d32 = ~0;
+		}
+
+		if (fiq_fsm_enable && ( 0x0000FFFF & ~(dwc_otg_hcd->fiq_state->haintmsk_saved.b2.chint))) {
+			gintsts.b.hcintr = 1;
+		}
+
+		/* Danger will robinson: fake a SOF if necessary */
+		if (fiq_fsm_enable && (dwc_otg_hcd->fiq_state->gintmsk_saved.b.sofintr == 1)) {
+			gintsts.b.sofintr = 1;
+		}
+		gintsts.d32 &= gintmsk.d32;
+		
+		if (fiq_enable) {
+			fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
+			local_fiq_enable();
+		}
+
+		if (!gintsts.d32) {
+			goto exit_handler_routine;
+		}
+
+#ifdef DEBUG
+		// We should be OK doing this because the common interrupts should already have been serviced
+		/* Don't print debug message in the interrupt handler on SOF */
+#ifndef DEBUG_SOF
+		if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#endif
+			DWC_DEBUGPL(DBG_HCDI, "\n");
+#endif
+
+#ifdef DEBUG
+#ifndef DEBUG_SOF
+		if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#endif
+			DWC_DEBUGPL(DBG_HCDI,
+				    "DWC OTG HCD Interrupt Detected gintsts&gintmsk=0x%08x core_if=%p\n",
+				    gintsts.d32, core_if);
+#endif
+		hfnum.d32 = DWC_READ_REG32(&dwc_otg_hcd->core_if->host_if->host_global_regs->hfnum);
+		if (gintsts.b.sofintr) {
+			retval |= dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd);
+		}
+
+		if (gintsts.b.rxstsqlvl) {
+			retval |=
+			    dwc_otg_hcd_handle_rx_status_q_level_intr
+			    (dwc_otg_hcd);
+		}
+		if (gintsts.b.nptxfempty) {
+			retval |=
+			    dwc_otg_hcd_handle_np_tx_fifo_empty_intr
+			    (dwc_otg_hcd);
+		}
+		if (gintsts.b.i2cintr) {
+			/** @todo Implement i2cintr handler. */
+		}
+		if (gintsts.b.portintr) {
+
+			gintmsk_data_t gintmsk = { .b.portintr = 1};
+			retval |= dwc_otg_hcd_handle_port_intr(dwc_otg_hcd);
+			if (fiq_enable) {
+				local_fiq_disable();
+				fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
+				DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
+				fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
+				local_fiq_enable();
+			} else {
+				DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
+			}
+		}
+		if (gintsts.b.hcintr) {
+			retval |= dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd);
+		}
+		if (gintsts.b.ptxfempty) {
+			retval |=
+			    dwc_otg_hcd_handle_perio_tx_fifo_empty_intr
+			    (dwc_otg_hcd);
+		}
+#ifdef DEBUG
+#ifndef DEBUG_SOF
+		if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#endif
+		{
+			DWC_DEBUGPL(DBG_HCDI,
+				    "DWC OTG HCD Finished Servicing Interrupts\n");
+			DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintsts=0x%08x\n",
+				    DWC_READ_REG32(&global_regs->gintsts));
+			DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintmsk=0x%08x\n",
+				    DWC_READ_REG32(&global_regs->gintmsk));
+		}
+#endif
+
+#ifdef DEBUG
+#ifndef DEBUG_SOF
+		if (gintsts.d32 != DWC_SOF_INTR_MASK)
+#endif
+			DWC_DEBUGPL(DBG_HCDI, "\n");
+#endif
+
+	}
+
+exit_handler_routine:
+	if (fiq_enable)	{
+		gintmsk_data_t gintmsk_new;
+		haintmsk_data_t haintmsk_new;
+		local_fiq_disable();
+		fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
+		gintmsk_new.d32 = *(volatile uint32_t *)&dwc_otg_hcd->fiq_state->gintmsk_saved.d32;
+		if(fiq_fsm_enable)
+			haintmsk_new.d32 = *(volatile uint32_t *)&dwc_otg_hcd->fiq_state->haintmsk_saved.d32;
+		else
+			haintmsk_new.d32 = 0x0000FFFF;
+
+		/* The FIQ could have sneaked another interrupt in. If so, don't clear MPHI */
+		if ((gintmsk_new.d32 == ~0) && (haintmsk_new.d32 == 0x0000FFFF)) {
+				DWC_WRITE_REG32(dwc_otg_hcd->fiq_state->mphi_regs.intstat, (1<<16));
+				if (dwc_otg_hcd->fiq_state->mphi_int_count >= 50) {
+					fiq_print(FIQDBG_INT, dwc_otg_hcd->fiq_state, "MPHI CLR");
+					DWC_WRITE_REG32(dwc_otg_hcd->fiq_state->mphi_regs.ctrl, ((1<<31) + (1<<16)));
+					while (!(DWC_READ_REG32(dwc_otg_hcd->fiq_state->mphi_regs.ctrl) & (1 << 17)))
+						;
+					DWC_WRITE_REG32(dwc_otg_hcd->fiq_state->mphi_regs.ctrl, (1<<31));
+					dwc_otg_hcd->fiq_state->mphi_int_count = 0;
+				}
+				int_done++;
+		}
+		haintmsk.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->haintmsk);
+		/* Re-enable interrupts that the FIQ masked (first time round) */
+		FIQ_WRITE(dwc_otg_hcd->fiq_state->dwc_regs_base + GINTMSK, gintmsk.d32);
+		fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
+		local_fiq_enable();
+
+		if ((jiffies / HZ) > last_time) {
+			//dwc_otg_qh_t *qh;
+			//dwc_list_link_t *cur;
+			/* Once a second output the fiq and irq numbers, useful for debug */
+			last_time = jiffies / HZ;
+		//	 DWC_WARN("np_kick=%d AHC=%d sched_frame=%d cur_frame=%d int_done=%d fiq_done=%d",
+		//	dwc_otg_hcd->fiq_state->kick_np_queues, dwc_otg_hcd->available_host_channels,
+		//	dwc_otg_hcd->fiq_state->next_sched_frame, hfnum.b.frnum, int_done, dwc_otg_hcd->fiq_state->fiq_done);
+			 //printk(KERN_WARNING "Periodic queues:\n");
+		}
+	}
+
+	DWC_SPINUNLOCK(dwc_otg_hcd->lock);
+	return retval;
+}
+
+#ifdef DWC_TRACK_MISSED_SOFS
+
+#warning Compiling code to track missed SOFs
+#define FRAME_NUM_ARRAY_SIZE 1000
+/**
+ * This function is for debug only.
+ */
+static inline void track_missed_sofs(uint16_t curr_frame_number)
+{
+	static uint16_t frame_num_array[FRAME_NUM_ARRAY_SIZE];
+	static uint16_t last_frame_num_array[FRAME_NUM_ARRAY_SIZE];
+	static int frame_num_idx = 0;
+	static uint16_t last_frame_num = DWC_HFNUM_MAX_FRNUM;
+	static int dumped_frame_num_array = 0;
+
+	if (frame_num_idx < FRAME_NUM_ARRAY_SIZE) {
+		if (((last_frame_num + 1) & DWC_HFNUM_MAX_FRNUM) !=
+		    curr_frame_number) {
+			frame_num_array[frame_num_idx] = curr_frame_number;
+			last_frame_num_array[frame_num_idx++] = last_frame_num;
+		}
+	} else if (!dumped_frame_num_array) {
+		int i;
+		DWC_PRINTF("Frame     Last Frame\n");
+		DWC_PRINTF("-----     ----------\n");
+		for (i = 0; i < FRAME_NUM_ARRAY_SIZE; i++) {
+			DWC_PRINTF("0x%04x    0x%04x\n",
+				   frame_num_array[i], last_frame_num_array[i]);
+		}
+		dumped_frame_num_array = 1;
+	}
+	last_frame_num = curr_frame_number;
+}
+#endif
+
+/**
+ * Handles the start-of-frame interrupt in host mode. Non-periodic
+ * transactions may be queued to the DWC_otg controller for the current
+ * (micro)frame. Periodic transactions may be queued to the controller for the
+ * next (micro)frame.
+ */
+int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t * hcd)
+{
+	hfnum_data_t hfnum;
+	gintsts_data_t gintsts = { .d32 = 0 };
+	dwc_list_link_t *qh_entry;
+	dwc_otg_qh_t *qh;
+	dwc_otg_transaction_type_e tr_type;
+	int did_something = 0;
+	int32_t next_sched_frame = -1;
+
+	hfnum.d32 =
+	    DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hfnum);
+
+#ifdef DEBUG_SOF
+	DWC_DEBUGPL(DBG_HCD, "--Start of Frame Interrupt--\n");
+#endif
+	hcd->frame_number = hfnum.b.frnum;
+
+#ifdef DEBUG
+	hcd->frrem_accum += hfnum.b.frrem;
+	hcd->frrem_samples++;
+#endif
+
+#ifdef DWC_TRACK_MISSED_SOFS
+	track_missed_sofs(hcd->frame_number);
+#endif
+	/* Determine whether any periodic QHs should be executed. */
+	qh_entry = DWC_LIST_FIRST(&hcd->periodic_sched_inactive);
+	while (qh_entry != &hcd->periodic_sched_inactive) {
+		qh = DWC_LIST_ENTRY(qh_entry, dwc_otg_qh_t, qh_list_entry);
+		qh_entry = qh_entry->next;
+		if (dwc_frame_num_le(qh->sched_frame, hcd->frame_number)) {
+
+			/*
+			 * Move QH to the ready list to be executed next
+			 * (micro)frame.
+			 */
+			DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_ready,
+					   &qh->qh_list_entry);
+
+			did_something = 1;
+		}
+		else
+		{
+			if(next_sched_frame < 0 || dwc_frame_num_le(qh->sched_frame, next_sched_frame))
+			{
+				next_sched_frame = qh->sched_frame;
+			}
+		}
+	}
+	if (fiq_enable)
+		hcd->fiq_state->next_sched_frame = next_sched_frame;
+
+	tr_type = dwc_otg_hcd_select_transactions(hcd);
+	if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+		dwc_otg_hcd_queue_transactions(hcd, tr_type);
+		did_something = 1;
+	}
+
+	/* Clear interrupt - but do not trample on the FIQ sof */
+	if (!fiq_fsm_enable) {
+		gintsts.b.sofintr = 1;
+		DWC_WRITE_REG32(&hcd->core_if->core_global_regs->gintsts, gintsts.d32);
+	}
+	return 1;
+}
+
+/** Handles the Rx Status Queue Level Interrupt, which indicates that there is at
+ * least one packet in the Rx FIFO.  The packets are moved from the FIFO to
+ * memory if the DWC_otg controller is operating in Slave mode. */
+int32_t dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+	host_grxsts_data_t grxsts;
+	dwc_hc_t *hc = NULL;
+
+	DWC_DEBUGPL(DBG_HCD, "--RxStsQ Level Interrupt--\n");
+
+	grxsts.d32 =
+	    DWC_READ_REG32(&dwc_otg_hcd->core_if->core_global_regs->grxstsp);
+
+	hc = dwc_otg_hcd->hc_ptr_array[grxsts.b.chnum];
+	if (!hc) {
+		DWC_ERROR("Unable to get corresponding channel\n");
+		return 0;
+	}
+
+	/* Packet Status */
+	DWC_DEBUGPL(DBG_HCDV, "    Ch num = %d\n", grxsts.b.chnum);
+	DWC_DEBUGPL(DBG_HCDV, "    Count = %d\n", grxsts.b.bcnt);
+	DWC_DEBUGPL(DBG_HCDV, "    DPID = %d, hc.dpid = %d\n", grxsts.b.dpid,
+		    hc->data_pid_start);
+	DWC_DEBUGPL(DBG_HCDV, "    PStatus = %d\n", grxsts.b.pktsts);
+
+	switch (grxsts.b.pktsts) {
+	case DWC_GRXSTS_PKTSTS_IN:
+		/* Read the data into the host buffer. */
+		if (grxsts.b.bcnt > 0) {
+			dwc_otg_read_packet(dwc_otg_hcd->core_if,
+					    hc->xfer_buff, grxsts.b.bcnt);
+
+			/* Update the HC fields for the next packet received. */
+			hc->xfer_count += grxsts.b.bcnt;
+			hc->xfer_buff += grxsts.b.bcnt;
+		}
+
+	case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
+	case DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR:
+	case DWC_GRXSTS_PKTSTS_CH_HALTED:
+		/* Handled in interrupt, just ignore data */
+		break;
+	default:
+		DWC_ERROR("RX_STS_Q Interrupt: Unknown status %d\n",
+			  grxsts.b.pktsts);
+		break;
+	}
+
+	return 1;
+}
+
+/** This interrupt occurs when the non-periodic Tx FIFO is half-empty. More
+ * data packets may be written to the FIFO for OUT transfers. More requests
+ * may be written to the non-periodic request queue for IN transfers. This
+ * interrupt is enabled only in Slave mode. */
+int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+	DWC_DEBUGPL(DBG_HCD, "--Non-Periodic TxFIFO Empty Interrupt--\n");
+	dwc_otg_hcd_queue_transactions(dwc_otg_hcd,
+				       DWC_OTG_TRANSACTION_NON_PERIODIC);
+	return 1;
+}
+
+/** This interrupt occurs when the periodic Tx FIFO is half-empty. More data
+ * packets may be written to the FIFO for OUT transfers. More requests may be
+ * written to the periodic request queue for IN transfers. This interrupt is
+ * enabled only in Slave mode. */
+int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+	DWC_DEBUGPL(DBG_HCD, "--Periodic TxFIFO Empty Interrupt--\n");
+	dwc_otg_hcd_queue_transactions(dwc_otg_hcd,
+				       DWC_OTG_TRANSACTION_PERIODIC);
+	return 1;
+}
+
+/** There are multiple conditions that can cause a port interrupt. This function
+ * determines which interrupt conditions have occurred and handles them
+ * appropriately. */
+int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+	int retval = 0;
+	hprt0_data_t hprt0;
+	hprt0_data_t hprt0_modify;
+
+	hprt0.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
+	hprt0_modify.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
+
+	/* Clear appropriate bits in HPRT0 to clear the interrupt bit in
+	 * GINTSTS */
+
+	hprt0_modify.b.prtena = 0;
+	hprt0_modify.b.prtconndet = 0;
+	hprt0_modify.b.prtenchng = 0;
+	hprt0_modify.b.prtovrcurrchng = 0;
+
+	/* Port Connect Detected
+	 * Set flag and clear if detected */
+	if (dwc_otg_hcd->core_if->hibernation_suspend == 1) {
+		// Dont modify port status if we are in hibernation state
+		hprt0_modify.b.prtconndet = 1;
+		hprt0_modify.b.prtenchng = 1;
+		DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0_modify.d32);
+		hprt0.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
+		return retval;
+	}
+
+	if (hprt0.b.prtconndet) {
+		/** @todo - check if steps performed in 'else' block should be perfromed regardles adp */
+		if (dwc_otg_hcd->core_if->adp_enable &&
+				dwc_otg_hcd->core_if->adp.vbuson_timer_started == 1) {
+			DWC_PRINTF("PORT CONNECT DETECTED ----------------\n");
+			DWC_TIMER_CANCEL(dwc_otg_hcd->core_if->adp.vbuson_timer);
+			dwc_otg_hcd->core_if->adp.vbuson_timer_started = 0;
+			/* TODO - check if this is required, as
+			 * host initialization was already performed
+			 * after initial ADP probing
+			 */
+			/*dwc_otg_hcd->core_if->adp.vbuson_timer_started = 0;
+			dwc_otg_core_init(dwc_otg_hcd->core_if);
+			dwc_otg_enable_global_interrupts(dwc_otg_hcd->core_if);
+			cil_hcd_start(dwc_otg_hcd->core_if);*/
+		} else {
+
+			DWC_DEBUGPL(DBG_HCD, "--Port Interrupt HPRT0=0x%08x "
+				    "Port Connect Detected--\n", hprt0.d32);
+			dwc_otg_hcd->flags.b.port_connect_status_change = 1;
+			dwc_otg_hcd->flags.b.port_connect_status = 1;
+			hprt0_modify.b.prtconndet = 1;
+
+			/* B-Device has connected, Delete the connection timer. */
+			DWC_TIMER_CANCEL(dwc_otg_hcd->conn_timer);
+		}
+		/* The Hub driver asserts a reset when it sees port connect
+		 * status change flag */
+		retval |= 1;
+	}
+
+	/* Port Enable Changed
+	 * Clear if detected - Set internal flag if disabled */
+	if (hprt0.b.prtenchng) {
+		DWC_DEBUGPL(DBG_HCD, "  --Port Interrupt HPRT0=0x%08x "
+			    "Port Enable Changed--\n", hprt0.d32);
+		hprt0_modify.b.prtenchng = 1;
+		if (hprt0.b.prtena == 1) {
+			hfir_data_t hfir;
+			int do_reset = 0;
+			dwc_otg_core_params_t *params =
+			    dwc_otg_hcd->core_if->core_params;
+			dwc_otg_core_global_regs_t *global_regs =
+			    dwc_otg_hcd->core_if->core_global_regs;
+			dwc_otg_host_if_t *host_if =
+			    dwc_otg_hcd->core_if->host_if;
+
+			/* Every time when port enables calculate
+			 * HFIR.FrInterval
+			 */
+			hfir.d32 = DWC_READ_REG32(&host_if->host_global_regs->hfir);
+			hfir.b.frint = calc_frame_interval(dwc_otg_hcd->core_if);
+			DWC_WRITE_REG32(&host_if->host_global_regs->hfir, hfir.d32);
+
+			/* Check if we need to adjust the PHY clock speed for
+			 * low power and adjust it */
+			if (params->host_support_fs_ls_low_power) {
+				gusbcfg_data_t usbcfg;
+
+				usbcfg.d32 =
+				    DWC_READ_REG32(&global_regs->gusbcfg);
+
+				if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED
+				    || hprt0.b.prtspd ==
+				    DWC_HPRT0_PRTSPD_FULL_SPEED) {
+					/*
+					 * Low power
+					 */
+					hcfg_data_t hcfg;
+					if (usbcfg.b.phylpwrclksel == 0) {
+						/* Set PHY low power clock select for FS/LS devices */
+						usbcfg.b.phylpwrclksel = 1;
+						DWC_WRITE_REG32
+						    (&global_regs->gusbcfg,
+						     usbcfg.d32);
+						do_reset = 1;
+					}
+
+					hcfg.d32 =
+					    DWC_READ_REG32
+					    (&host_if->host_global_regs->hcfg);
+
+					if (hprt0.b.prtspd ==
+					    DWC_HPRT0_PRTSPD_LOW_SPEED
+					    && params->host_ls_low_power_phy_clk
+					    ==
+					    DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ)
+					{
+						/* 6 MHZ */
+						DWC_DEBUGPL(DBG_CIL,
+							    "FS_PHY programming HCFG to 6 MHz (Low Power)\n");
+						if (hcfg.b.fslspclksel !=
+						    DWC_HCFG_6_MHZ) {
+							hcfg.b.fslspclksel =
+							    DWC_HCFG_6_MHZ;
+							DWC_WRITE_REG32
+							    (&host_if->host_global_regs->hcfg,
+							     hcfg.d32);
+							do_reset = 1;
+						}
+					} else {
+						/* 48 MHZ */
+						DWC_DEBUGPL(DBG_CIL,
+							    "FS_PHY programming HCFG to 48 MHz ()\n");
+						if (hcfg.b.fslspclksel !=
+						    DWC_HCFG_48_MHZ) {
+							hcfg.b.fslspclksel =
+							    DWC_HCFG_48_MHZ;
+							DWC_WRITE_REG32
+							    (&host_if->host_global_regs->hcfg,
+							     hcfg.d32);
+							do_reset = 1;
+						}
+					}
+				} else {
+					/*
+					 * Not low power
+					 */
+					if (usbcfg.b.phylpwrclksel == 1) {
+						usbcfg.b.phylpwrclksel = 0;
+						DWC_WRITE_REG32
+						    (&global_regs->gusbcfg,
+						     usbcfg.d32);
+						do_reset = 1;
+					}
+				}
+
+				if (do_reset) {
+					DWC_TASK_SCHEDULE(dwc_otg_hcd->reset_tasklet);
+				}
+			}
+
+			if (!do_reset) {
+				/* Port has been enabled set the reset change flag */
+				dwc_otg_hcd->flags.b.port_reset_change = 1;
+			}
+		} else {
+			dwc_otg_hcd->flags.b.port_enable_change = 1;
+		}
+		retval |= 1;
+	}
+
+	/** Overcurrent Change Interrupt */
+	if (hprt0.b.prtovrcurrchng) {
+		DWC_DEBUGPL(DBG_HCD, "  --Port Interrupt HPRT0=0x%08x "
+			    "Port Overcurrent Changed--\n", hprt0.d32);
+		dwc_otg_hcd->flags.b.port_over_current_change = 1;
+		hprt0_modify.b.prtovrcurrchng = 1;
+		retval |= 1;
+	}
+
+	/* Clear Port Interrupts */
+	DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0_modify.d32);
+
+	return retval;
+}
+
+/** This interrupt indicates that one or more host channels has a pending
+ * interrupt. There are multiple conditions that can cause each host channel
+ * interrupt. This function determines which conditions have occurred for each
+ * host channel interrupt and handles them appropriately. */
+int32_t dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+	int i;
+	int retval = 0;
+	haint_data_t haint = { .d32 = 0 } ;
+
+	/* Clear appropriate bits in HCINTn to clear the interrupt bit in
+	 * GINTSTS */
+
+	if (!fiq_fsm_enable)
+		haint.d32 = dwc_otg_read_host_all_channels_intr(dwc_otg_hcd->core_if);
+
+	// Overwrite with saved interrupts from fiq handler
+	if(fiq_fsm_enable)
+	{
+		/* check the mask? */
+		local_fiq_disable();
+		fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
+		haint.b2.chint |= ~(dwc_otg_hcd->fiq_state->haintmsk_saved.b2.chint);
+		dwc_otg_hcd->fiq_state->haintmsk_saved.b2.chint = ~0;
+		fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
+		local_fiq_enable();
+	}
+
+	for (i = 0; i < dwc_otg_hcd->core_if->core_params->host_channels; i++) {
+		if (haint.b2.chint & (1 << i)) {
+			retval |= dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd, i);
+		}
+	}
+
+	return retval;
+}
+
+/**
+ * Gets the actual length of a transfer after the transfer halts. _halt_status
+ * holds the reason for the halt.
+ *
+ * For IN transfers where halt_status is DWC_OTG_HC_XFER_COMPLETE,
+ * *short_read is set to 1 upon return if less than the requested
+ * number of bytes were transferred. Otherwise, *short_read is set to 0 upon
+ * return. short_read may also be NULL on entry, in which case it remains
+ * unchanged.
+ */
+static uint32_t get_actual_xfer_length(dwc_hc_t * hc,
+				       dwc_otg_hc_regs_t * hc_regs,
+				       dwc_otg_qtd_t * qtd,
+				       dwc_otg_halt_status_e halt_status,
+				       int *short_read)
+{
+	hctsiz_data_t hctsiz;
+	uint32_t length;
+
+	if (short_read != NULL) {
+		*short_read = 0;
+	}
+	hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+
+	if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
+		if (hc->ep_is_in) {
+			length = hc->xfer_len - hctsiz.b.xfersize;
+			if (short_read != NULL) {
+				*short_read = (hctsiz.b.xfersize != 0);
+			}
+		} else if (hc->qh->do_split) {
+				//length = split_out_xfersize[hc->hc_num];
+				length = qtd->ssplit_out_xfer_count;
+		} else {
+			length = hc->xfer_len;
+		}
+	} else {
+		/*
+		 * Must use the hctsiz.pktcnt field to determine how much data
+		 * has been transferred. This field reflects the number of
+		 * packets that have been transferred via the USB. This is
+		 * always an integral number of packets if the transfer was
+		 * halted before its normal completion. (Can't use the
+		 * hctsiz.xfersize field because that reflects the number of
+		 * bytes transferred via the AHB, not the USB).
+		 */
+		length =
+		    (hc->start_pkt_count - hctsiz.b.pktcnt) * hc->max_packet;
+	}
+
+	return length;
+}
+
+/**
+ * Updates the state of the URB after a Transfer Complete interrupt on the
+ * host channel. Updates the actual_length field of the URB based on the
+ * number of bytes transferred via the host channel. Sets the URB status
+ * if the data transfer is finished.
+ *
+ * @return 1 if the data transfer specified by the URB is completely finished,
+ * 0 otherwise.
+ */
+static int update_urb_state_xfer_comp(dwc_hc_t * hc,
+				      dwc_otg_hc_regs_t * hc_regs,
+				      dwc_otg_hcd_urb_t * urb,
+				      dwc_otg_qtd_t * qtd)
+{
+	int xfer_done = 0;
+	int short_read = 0;
+
+	int xfer_length;
+
+	xfer_length = get_actual_xfer_length(hc, hc_regs, qtd,
+					     DWC_OTG_HC_XFER_COMPLETE,
+					     &short_read);
+
+	/* non DWORD-aligned buffer case handling. */
+	if (hc->align_buff && xfer_length && hc->ep_is_in) {
+		dwc_memcpy(urb->buf + urb->actual_length, hc->qh->dw_align_buf,
+			   xfer_length);
+	}
+
+	urb->actual_length += xfer_length;
+
+	if (xfer_length && (hc->ep_type == DWC_OTG_EP_TYPE_BULK) &&
+	    (urb->flags & URB_SEND_ZERO_PACKET)
+	    && (urb->actual_length == urb->length)
+	    && !(urb->length % hc->max_packet)) {
+		xfer_done = 0;
+	} else if (short_read || urb->actual_length >= urb->length) {
+		xfer_done = 1;
+		urb->status = 0;
+	}
+
+#ifdef DEBUG
+	{
+		hctsiz_data_t hctsiz;
+		hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+		DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
+			    __func__, (hc->ep_is_in ? "IN" : "OUT"),
+			    hc->hc_num);
+		DWC_DEBUGPL(DBG_HCDV, "  hc->xfer_len %d\n", hc->xfer_len);
+		DWC_DEBUGPL(DBG_HCDV, "  hctsiz.xfersize %d\n",
+			    hctsiz.b.xfersize);
+		DWC_DEBUGPL(DBG_HCDV, "  urb->transfer_buffer_length %d\n",
+			    urb->length);
+		DWC_DEBUGPL(DBG_HCDV, "  urb->actual_length %d\n",
+			    urb->actual_length);
+		DWC_DEBUGPL(DBG_HCDV, "  short_read %d, xfer_done %d\n",
+			    short_read, xfer_done);
+	}
+#endif
+
+	return xfer_done;
+}
+
+/*
+ * Save the starting data toggle for the next transfer. The data toggle is
+ * saved in the QH for non-control transfers and it's saved in the QTD for
+ * control transfers.
+ */
+void dwc_otg_hcd_save_data_toggle(dwc_hc_t * hc,
+			     dwc_otg_hc_regs_t * hc_regs, dwc_otg_qtd_t * qtd)
+{
+	hctsiz_data_t hctsiz;
+	hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+
+	if (hc->ep_type != DWC_OTG_EP_TYPE_CONTROL) {
+		dwc_otg_qh_t *qh = hc->qh;
+		if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
+			qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+		} else {
+			qh->data_toggle = DWC_OTG_HC_PID_DATA1;
+		}
+	} else {
+		if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
+			qtd->data_toggle = DWC_OTG_HC_PID_DATA0;
+		} else {
+			qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
+		}
+	}
+}
+
+/**
+ * Updates the state of an Isochronous URB when the transfer is stopped for
+ * any reason. The fields of the current entry in the frame descriptor array
+ * are set based on the transfer state and the input _halt_status. Completes
+ * the Isochronous URB if all the URB frames have been completed.
+ *
+ * @return DWC_OTG_HC_XFER_COMPLETE if there are more frames remaining to be
+ * transferred in the URB. Otherwise return DWC_OTG_HC_XFER_URB_COMPLETE.
+ */
+static dwc_otg_halt_status_e
+update_isoc_urb_state(dwc_otg_hcd_t * hcd,
+		      dwc_hc_t * hc,
+		      dwc_otg_hc_regs_t * hc_regs,
+		      dwc_otg_qtd_t * qtd, dwc_otg_halt_status_e halt_status)
+{
+	dwc_otg_hcd_urb_t *urb = qtd->urb;
+	dwc_otg_halt_status_e ret_val = halt_status;
+	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+
+	frame_desc = &urb->iso_descs[qtd->isoc_frame_index];
+	switch (halt_status) {
+	case DWC_OTG_HC_XFER_COMPLETE:
+		frame_desc->status = 0;
+		frame_desc->actual_length =
+		    get_actual_xfer_length(hc, hc_regs, qtd, halt_status, NULL);
+
+		/* non DWORD-aligned buffer case handling. */
+		if (hc->align_buff && frame_desc->actual_length && hc->ep_is_in) {
+			dwc_memcpy(urb->buf + frame_desc->offset + qtd->isoc_split_offset,
+				   hc->qh->dw_align_buf, frame_desc->actual_length);
+		}
+
+		break;
+	case DWC_OTG_HC_XFER_FRAME_OVERRUN:
+		urb->error_count++;
+		if (hc->ep_is_in) {
+			frame_desc->status = -DWC_E_NO_STREAM_RES;
+		} else {
+			frame_desc->status = -DWC_E_COMMUNICATION;
+		}
+		frame_desc->actual_length = 0;
+		break;
+	case DWC_OTG_HC_XFER_BABBLE_ERR:
+		urb->error_count++;
+		frame_desc->status = -DWC_E_OVERFLOW;
+		/* Don't need to update actual_length in this case. */
+		break;
+	case DWC_OTG_HC_XFER_XACT_ERR:
+		urb->error_count++;
+		frame_desc->status = -DWC_E_PROTOCOL;
+		frame_desc->actual_length =
+		    get_actual_xfer_length(hc, hc_regs, qtd, halt_status, NULL);
+
+		/* non DWORD-aligned buffer case handling. */
+		if (hc->align_buff && frame_desc->actual_length && hc->ep_is_in) {
+			dwc_memcpy(urb->buf + frame_desc->offset + qtd->isoc_split_offset,
+				   hc->qh->dw_align_buf, frame_desc->actual_length);
+		}
+		/* Skip whole frame */
+		if (hc->qh->do_split && (hc->ep_type == DWC_OTG_EP_TYPE_ISOC) &&
+		    hc->ep_is_in && hcd->core_if->dma_enable) {
+			qtd->complete_split = 0;
+			qtd->isoc_split_offset = 0;
+		}
+
+		break;
+	default:
+		DWC_ASSERT(1, "Unhandled _halt_status (%d)\n", halt_status);
+		break;
+	}
+	if (++qtd->isoc_frame_index == urb->packet_count) {
+		/*
+		 * urb->status is not used for isoc transfers.
+		 * The individual frame_desc statuses are used instead.
+		 */
+		hcd->fops->complete(hcd, urb->priv, urb, 0);
+		ret_val = DWC_OTG_HC_XFER_URB_COMPLETE;
+	} else {
+		ret_val = DWC_OTG_HC_XFER_COMPLETE;
+	}
+	return ret_val;
+}
+
+/**
+ * Frees the first QTD in the QH's list if free_qtd is 1. For non-periodic
+ * QHs, removes the QH from the active non-periodic schedule. If any QTDs are
+ * still linked to the QH, the QH is added to the end of the inactive
+ * non-periodic schedule. For periodic QHs, removes the QH from the periodic
+ * schedule if no more QTDs are linked to the QH.
+ */
+static void deactivate_qh(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, int free_qtd)
+{
+	int continue_split = 0;
+	dwc_otg_qtd_t *qtd;
+
+	DWC_DEBUGPL(DBG_HCDV, "  %s(%p,%p,%d)\n", __func__, hcd, qh, free_qtd);
+
+	qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
+
+	if (qtd->complete_split) {
+		continue_split = 1;
+	} else if (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_MID ||
+		   qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_END) {
+		continue_split = 1;
+	}
+
+	if (free_qtd) {
+		dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
+		continue_split = 0;
+	}
+
+	qh->channel = NULL;
+	dwc_otg_hcd_qh_deactivate(hcd, qh, continue_split);
+}
+
+/**
+ * Releases a host channel for use by other transfers. Attempts to select and
+ * queue more transactions since at least one host channel is available.
+ *
+ * @param hcd The HCD state structure.
+ * @param hc The host channel to release.
+ * @param qtd The QTD associated with the host channel. This QTD may be freed
+ * if the transfer is complete or an error has occurred.
+ * @param halt_status Reason the channel is being released. This status
+ * determines the actions taken by this function.
+ */
+static void release_channel(dwc_otg_hcd_t * hcd,
+			    dwc_hc_t * hc,
+			    dwc_otg_qtd_t * qtd,
+			    dwc_otg_halt_status_e halt_status)
+{
+	dwc_otg_transaction_type_e tr_type;
+	int free_qtd;
+	dwc_irqflags_t flags;
+	dwc_spinlock_t *channel_lock = hcd->channel_lock;
+
+	int hog_port = 0;
+
+	DWC_DEBUGPL(DBG_HCDV, "  %s: channel %d, halt_status %d, xfer_len %d\n",
+		    __func__, hc->hc_num, halt_status, hc->xfer_len);
+
+	if(fiq_fsm_enable && hc->do_split) {
+		if(!hc->ep_is_in && hc->ep_type == UE_ISOCHRONOUS) {
+			if(hc->xact_pos == DWC_HCSPLIT_XACTPOS_MID ||
+					hc->xact_pos == DWC_HCSPLIT_XACTPOS_BEGIN) {
+				hog_port = 0;
+			}
+		}
+	}
+
+	switch (halt_status) {
+	case DWC_OTG_HC_XFER_URB_COMPLETE:
+		free_qtd = 1;
+		break;
+	case DWC_OTG_HC_XFER_AHB_ERR:
+	case DWC_OTG_HC_XFER_STALL:
+	case DWC_OTG_HC_XFER_BABBLE_ERR:
+		free_qtd = 1;
+		break;
+	case DWC_OTG_HC_XFER_XACT_ERR:
+		if (qtd->error_count >= 3) {
+			DWC_DEBUGPL(DBG_HCDV,
+				    "  Complete URB with transaction error\n");
+			free_qtd = 1;
+			qtd->urb->status = -DWC_E_PROTOCOL;
+			hcd->fops->complete(hcd, qtd->urb->priv,
+					    qtd->urb, -DWC_E_PROTOCOL);
+		} else {
+			free_qtd = 0;
+		}
+		break;
+	case DWC_OTG_HC_XFER_URB_DEQUEUE:
+		/*
+		 * The QTD has already been removed and the QH has been
+		 * deactivated. Don't want to do anything except release the
+		 * host channel and try to queue more transfers.
+		 */
+		goto cleanup;
+	case DWC_OTG_HC_XFER_NO_HALT_STATUS:
+		free_qtd = 0;
+		break;
+	case DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE:
+		DWC_DEBUGPL(DBG_HCDV,
+			"  Complete URB with I/O error\n");
+		free_qtd = 1;
+		qtd->urb->status = -DWC_E_IO;
+		hcd->fops->complete(hcd, qtd->urb->priv,
+			qtd->urb, -DWC_E_IO);
+		break;
+	default:
+		free_qtd = 0;
+		break;
+	}
+
+	deactivate_qh(hcd, hc->qh, free_qtd);
+
+cleanup:
+	/*
+	 * Release the host channel for use by other transfers. The cleanup
+	 * function clears the channel interrupt enables and conditions, so
+	 * there's no need to clear the Channel Halted interrupt separately.
+	 */
+	if (fiq_fsm_enable && hcd->fiq_state->channel[hc->hc_num].fsm != FIQ_PASSTHROUGH)
+		dwc_otg_cleanup_fiq_channel(hcd, hc->hc_num);
+	dwc_otg_hc_cleanup(hcd->core_if, hc);
+	DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
+
+	if (!microframe_schedule) {
+		switch (hc->ep_type) {
+		case DWC_OTG_EP_TYPE_CONTROL:
+		case DWC_OTG_EP_TYPE_BULK:
+			hcd->non_periodic_channels--;
+			break;
+
+		default:
+			/*
+			 * Don't release reservations for periodic channels here.
+			 * That's done when a periodic transfer is descheduled (i.e.
+			 * when the QH is removed from the periodic schedule).
+			 */
+			break;
+		}
+	} else {
+
+		DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
+		hcd->available_host_channels++;
+		fiq_print(FIQDBG_INT, hcd->fiq_state, "AHC = %d ", hcd->available_host_channels);
+		DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
+	}
+
+	/* Try to queue more transfers now that there's a free channel. */
+	tr_type = dwc_otg_hcd_select_transactions(hcd);
+	if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+		dwc_otg_hcd_queue_transactions(hcd, tr_type);
+	}
+}
+
+/**
+ * Halts a host channel. If the channel cannot be halted immediately because
+ * the request queue is full, this function ensures that the FIFO empty
+ * interrupt for the appropriate queue is enabled so that the halt request can
+ * be queued when there is space in the request queue.
+ *
+ * This function may also be called in DMA mode. In that case, the channel is
+ * simply released since the core always halts the channel automatically in
+ * DMA mode.
+ */
+static void halt_channel(dwc_otg_hcd_t * hcd,
+			 dwc_hc_t * hc,
+			 dwc_otg_qtd_t * qtd, dwc_otg_halt_status_e halt_status)
+{
+	if (hcd->core_if->dma_enable) {
+		release_channel(hcd, hc, qtd, halt_status);
+		return;
+	}
+
+	/* Slave mode processing... */
+	dwc_otg_hc_halt(hcd->core_if, hc, halt_status);
+
+	if (hc->halt_on_queue) {
+		gintmsk_data_t gintmsk = {.d32 = 0 };
+		dwc_otg_core_global_regs_t *global_regs;
+		global_regs = hcd->core_if->core_global_regs;
+
+		if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+		    hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
+			/*
+			 * Make sure the Non-periodic Tx FIFO empty interrupt
+			 * is enabled so that the non-periodic schedule will
+			 * be processed.
+			 */
+			gintmsk.b.nptxfempty = 1;
+			if (fiq_enable) {
+				local_fiq_disable();
+				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
+				DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
+				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
+				local_fiq_enable();
+			} else {
+				DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
+			}
+		} else {
+			/*
+			 * Move the QH from the periodic queued schedule to
+			 * the periodic assigned schedule. This allows the
+			 * halt to be queued when the periodic schedule is
+			 * processed.
+			 */
+			DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
+					   &hc->qh->qh_list_entry);
+
+			/*
+			 * Make sure the Periodic Tx FIFO Empty interrupt is
+			 * enabled so that the periodic schedule will be
+			 * processed.
+			 */
+			gintmsk.b.ptxfempty = 1;
+			if (fiq_enable) {
+				local_fiq_disable();
+				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
+				DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
+				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
+				local_fiq_enable();
+			} else {
+				DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
+			}
+		}
+	}
+}
+
+/**
+ * Performs common cleanup for non-periodic transfers after a Transfer
+ * Complete interrupt. This function should be called after any endpoint type
+ * specific handling is finished to release the host channel.
+ */
+static void complete_non_periodic_xfer(dwc_otg_hcd_t * hcd,
+				       dwc_hc_t * hc,
+				       dwc_otg_hc_regs_t * hc_regs,
+				       dwc_otg_qtd_t * qtd,
+				       dwc_otg_halt_status_e halt_status)
+{
+	hcint_data_t hcint;
+
+	qtd->error_count = 0;
+
+	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+	if (hcint.b.nyet) {
+		/*
+		 * Got a NYET on the last transaction of the transfer. This
+		 * means that the endpoint should be in the PING state at the
+		 * beginning of the next transfer.
+		 */
+		hc->qh->ping_state = 1;
+		clear_hc_int(hc_regs, nyet);
+	}
+
+	/*
+	 * Always halt and release the host channel to make it available for
+	 * more transfers. There may still be more phases for a control
+	 * transfer or more data packets for a bulk transfer at this point,
+	 * but the host channel is still halted. A channel will be reassigned
+	 * to the transfer when the non-periodic schedule is processed after
+	 * the channel is released. This allows transactions to be queued
+	 * properly via dwc_otg_hcd_queue_transactions, which also enables the
+	 * Tx FIFO Empty interrupt if necessary.
+	 */
+	if (hc->ep_is_in) {
+		/*
+		 * IN transfers in Slave mode require an explicit disable to
+		 * halt the channel. (In DMA mode, this call simply releases
+		 * the channel.)
+		 */
+		halt_channel(hcd, hc, qtd, halt_status);
+	} else {
+		/*
+		 * The channel is automatically disabled by the core for OUT
+		 * transfers in Slave mode.
+		 */
+		release_channel(hcd, hc, qtd, halt_status);
+	}
+}
+
+/**
+ * Performs common cleanup for periodic transfers after a Transfer Complete
+ * interrupt. This function should be called after any endpoint type specific
+ * handling is finished to release the host channel.
+ */
+static void complete_periodic_xfer(dwc_otg_hcd_t * hcd,
+				   dwc_hc_t * hc,
+				   dwc_otg_hc_regs_t * hc_regs,
+				   dwc_otg_qtd_t * qtd,
+				   dwc_otg_halt_status_e halt_status)
+{
+	hctsiz_data_t hctsiz;
+	qtd->error_count = 0;
+
+	hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+	if (!hc->ep_is_in || hctsiz.b.pktcnt == 0) {
+		/* Core halts channel in these cases. */
+		release_channel(hcd, hc, qtd, halt_status);
+	} else {
+		/* Flush any outstanding requests from the Tx queue. */
+		halt_channel(hcd, hc, qtd, halt_status);
+	}
+}
+
+static int32_t handle_xfercomp_isoc_split_in(dwc_otg_hcd_t * hcd,
+					     dwc_hc_t * hc,
+					     dwc_otg_hc_regs_t * hc_regs,
+					     dwc_otg_qtd_t * qtd)
+{
+	uint32_t len;
+	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
+	frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
+
+	len = get_actual_xfer_length(hc, hc_regs, qtd,
+				     DWC_OTG_HC_XFER_COMPLETE, NULL);
+
+	if (!len) {
+		qtd->complete_split = 0;
+		qtd->isoc_split_offset = 0;
+		return 0;
+	}
+	frame_desc->actual_length += len;
+
+	if (hc->align_buff && len)
+		dwc_memcpy(qtd->urb->buf + frame_desc->offset +
+			   qtd->isoc_split_offset, hc->qh->dw_align_buf, len);
+	qtd->isoc_split_offset += len;
+
+	if (frame_desc->length == frame_desc->actual_length) {
+		frame_desc->status = 0;
+		qtd->isoc_frame_index++;
+		qtd->complete_split = 0;
+		qtd->isoc_split_offset = 0;
+	}
+
+	if (qtd->isoc_frame_index == qtd->urb->packet_count) {
+		hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+		release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+	} else {
+		release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
+	}
+
+	return 1;		/* Indicates that channel released */
+}
+
+/**
+ * Handles a host channel Transfer Complete interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_xfercomp_intr(dwc_otg_hcd_t * hcd,
+				       dwc_hc_t * hc,
+				       dwc_otg_hc_regs_t * hc_regs,
+				       dwc_otg_qtd_t * qtd)
+{
+	int urb_xfer_done;
+	dwc_otg_halt_status_e halt_status = DWC_OTG_HC_XFER_COMPLETE;
+	dwc_otg_hcd_urb_t *urb = qtd->urb;
+	int pipe_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
+
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		    "Transfer Complete--\n", hc->hc_num);
+
+	if (hcd->core_if->dma_desc_enable) {
+		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs, halt_status);
+		if (pipe_type == UE_ISOCHRONOUS) {
+			/* Do not disable the interrupt, just clear it */
+			clear_hc_int(hc_regs, xfercomp);
+			return 1;
+		}
+		goto handle_xfercomp_done;
+	}
+
+	/*
+	 * Handle xfer complete on CSPLIT.
+	 */
+
+	if (hc->qh->do_split) {
+		if ((hc->ep_type == DWC_OTG_EP_TYPE_ISOC) && hc->ep_is_in
+		    && hcd->core_if->dma_enable) {
+			if (qtd->complete_split
+			    && handle_xfercomp_isoc_split_in(hcd, hc, hc_regs,
+							     qtd))
+				goto handle_xfercomp_done;
+		} else {
+			qtd->complete_split = 0;
+		}
+	}
+
+	/* Update the QTD and URB states. */
+	switch (pipe_type) {
+	case UE_CONTROL:
+		switch (qtd->control_phase) {
+		case DWC_OTG_CONTROL_SETUP:
+			if (urb->length > 0) {
+				qtd->control_phase = DWC_OTG_CONTROL_DATA;
+			} else {
+				qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+			}
+			DWC_DEBUGPL(DBG_HCDV,
+				    "  Control setup transaction done\n");
+			halt_status = DWC_OTG_HC_XFER_COMPLETE;
+			break;
+		case DWC_OTG_CONTROL_DATA:{
+				urb_xfer_done =
+				    update_urb_state_xfer_comp(hc, hc_regs, urb,
+							       qtd);
+				if (urb_xfer_done) {
+					qtd->control_phase =
+					    DWC_OTG_CONTROL_STATUS;
+					DWC_DEBUGPL(DBG_HCDV,
+						    "  Control data transfer done\n");
+				} else {
+					dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+				}
+				halt_status = DWC_OTG_HC_XFER_COMPLETE;
+				break;
+			}
+		case DWC_OTG_CONTROL_STATUS:
+			DWC_DEBUGPL(DBG_HCDV, "  Control transfer complete\n");
+			if (urb->status == -DWC_E_IN_PROGRESS) {
+				urb->status = 0;
+			}
+			hcd->fops->complete(hcd, urb->priv, urb, urb->status);
+			halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+			break;
+		}
+
+		complete_non_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+		break;
+	case UE_BULK:
+		DWC_DEBUGPL(DBG_HCDV, "  Bulk transfer complete\n");
+		urb_xfer_done =
+		    update_urb_state_xfer_comp(hc, hc_regs, urb, qtd);
+		if (urb_xfer_done) {
+			hcd->fops->complete(hcd, urb->priv, urb, urb->status);
+			halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+		} else {
+			halt_status = DWC_OTG_HC_XFER_COMPLETE;
+		}
+
+		dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+		complete_non_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+		break;
+	case UE_INTERRUPT:
+		DWC_DEBUGPL(DBG_HCDV, "  Interrupt transfer complete\n");
+		urb_xfer_done =
+			update_urb_state_xfer_comp(hc, hc_regs, urb, qtd);
+
+		/*
+		 * Interrupt URB is done on the first transfer complete
+		 * interrupt.
+		 */
+		if (urb_xfer_done) {
+				hcd->fops->complete(hcd, urb->priv, urb, urb->status);
+				halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+		} else {
+				halt_status = DWC_OTG_HC_XFER_COMPLETE;
+		}
+
+		dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+		complete_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+		break;
+	case UE_ISOCHRONOUS:
+		DWC_DEBUGPL(DBG_HCDV, "  Isochronous transfer complete\n");
+		if (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_ALL) {
+			halt_status =
+			    update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+						  DWC_OTG_HC_XFER_COMPLETE);
+		}
+		complete_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+		break;
+	}
+
+handle_xfercomp_done:
+	disable_hc_int(hc_regs, xfercompl);
+
+	return 1;
+}
+
+/**
+ * Handles a host channel STALL interrupt. This handler may be called in
+ * either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_stall_intr(dwc_otg_hcd_t * hcd,
+				    dwc_hc_t * hc,
+				    dwc_otg_hc_regs_t * hc_regs,
+				    dwc_otg_qtd_t * qtd)
+{
+	dwc_otg_hcd_urb_t *urb = qtd->urb;
+	int pipe_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
+
+	DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+		    "STALL Received--\n", hc->hc_num);
+
+	if (hcd->core_if->dma_desc_enable) {
+		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs, DWC_OTG_HC_XFER_STALL);
+		goto handle_stall_done;
+	}
+
+	if (pipe_type == UE_CONTROL) {
+		hcd->fops->complete(hcd, urb->priv, urb, -DWC_E_PIPE);
+	}
+
+	if (pipe_type == UE_BULK || pipe_type == UE_INTERRUPT) {
+		hcd->fops->complete(hcd, urb->priv, urb, -DWC_E_PIPE);
+		/*
+		 * USB protocol requires resetting the data toggle for bulk
+		 * and interrupt endpoints when a CLEAR_FEATURE(ENDPOINT_HALT)
+		 * setup command is issued to the endpoint. Anticipate the
+		 * CLEAR_FEATURE command since a STALL has occurred and reset
+		 * the data toggle now.
+		 */
+		hc->qh->data_toggle = 0;
+	}
+
+	halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_STALL);
+
+handle_stall_done:
+	disable_hc_int(hc_regs, stall);
+
+	return 1;
+}
+
+/*
+ * Updates the state of the URB when a transfer has been stopped due to an
+ * abnormal condition before the transfer completes. Modifies the
+ * actual_length field of the URB to reflect the number of bytes that have
+ * actually been transferred via the host channel.
+ */
+static void update_urb_state_xfer_intr(dwc_hc_t * hc,
+				       dwc_otg_hc_regs_t * hc_regs,
+				       dwc_otg_hcd_urb_t * urb,
+				       dwc_otg_qtd_t * qtd,
+				       dwc_otg_halt_status_e halt_status)
+{
+	uint32_t bytes_transferred = get_actual_xfer_length(hc, hc_regs, qtd,
+							    halt_status, NULL);
+	/* non DWORD-aligned buffer case handling. */
+	if (hc->align_buff && bytes_transferred && hc->ep_is_in) {
+		dwc_memcpy(urb->buf + urb->actual_length, hc->qh->dw_align_buf,
+			   bytes_transferred);
+	}
+
+	urb->actual_length += bytes_transferred;
+
+#ifdef DEBUG
+	{
+		hctsiz_data_t hctsiz;
+		hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+		DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
+			    __func__, (hc->ep_is_in ? "IN" : "OUT"),
+			    hc->hc_num);
+		DWC_DEBUGPL(DBG_HCDV, "  hc->start_pkt_count %d\n",
+			    hc->start_pkt_count);
+		DWC_DEBUGPL(DBG_HCDV, "  hctsiz.pktcnt %d\n", hctsiz.b.pktcnt);
+		DWC_DEBUGPL(DBG_HCDV, "  hc->max_packet %d\n", hc->max_packet);
+		DWC_DEBUGPL(DBG_HCDV, "  bytes_transferred %d\n",
+			    bytes_transferred);
+		DWC_DEBUGPL(DBG_HCDV, "  urb->actual_length %d\n",
+			    urb->actual_length);
+		DWC_DEBUGPL(DBG_HCDV, "  urb->transfer_buffer_length %d\n",
+			    urb->length);
+	}
+#endif
+}
+
+/**
+ * Handles a host channel NAK interrupt. This handler may be called in either
+ * DMA mode or Slave mode.
+ */
+static int32_t handle_hc_nak_intr(dwc_otg_hcd_t * hcd,
+				  dwc_hc_t * hc,
+				  dwc_otg_hc_regs_t * hc_regs,
+				  dwc_otg_qtd_t * qtd)
+{
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		    "NAK Received--\n", hc->hc_num);
+
+	/*
+	 * When we get bulk NAKs then remember this so we holdoff on this qh until
+	 * the beginning of the next frame
+	 */
+	switch(dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
+		case UE_BULK:
+		case UE_CONTROL:
+		if (nak_holdoff && qtd->qh->do_split)
+			hc->qh->nak_frame = dwc_otg_hcd_get_frame_number(hcd);
+	}
+
+	/*
+	 * Handle NAK for IN/OUT SSPLIT/CSPLIT transfers, bulk, control, and
+	 * interrupt.  Re-start the SSPLIT transfer.
+	 */
+	if (hc->do_split) {
+		if (hc->complete_split) {
+			qtd->error_count = 0;
+		}
+		qtd->complete_split = 0;
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
+		goto handle_nak_done;
+	}
+
+	switch (dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
+	case UE_CONTROL:
+	case UE_BULK:
+		if (hcd->core_if->dma_enable && hc->ep_is_in) {
+			/*
+			 * NAK interrupts are enabled on bulk/control IN
+			 * transfers in DMA mode for the sole purpose of
+			 * resetting the error count after a transaction error
+			 * occurs. The core will continue transferring data.
+			 * Disable other interrupts unmasked for the same
+			 * reason.
+			 */
+			disable_hc_int(hc_regs, datatglerr);
+			disable_hc_int(hc_regs, ack);
+			qtd->error_count = 0;
+			goto handle_nak_done;
+		}
+
+		/*
+		 * NAK interrupts normally occur during OUT transfers in DMA
+		 * or Slave mode. For IN transfers, more requests will be
+		 * queued as request queue space is available.
+		 */
+		qtd->error_count = 0;
+
+		if (!hc->qh->ping_state) {
+			update_urb_state_xfer_intr(hc, hc_regs,
+						   qtd->urb, qtd,
+						   DWC_OTG_HC_XFER_NAK);
+			dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+
+			if (hc->speed == DWC_OTG_EP_SPEED_HIGH)
+				hc->qh->ping_state = 1;
+		}
+
+		/*
+		 * Halt the channel so the transfer can be re-started from
+		 * the appropriate point or the PING protocol will
+		 * start/continue.
+		 */
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
+		break;
+	case UE_INTERRUPT:
+		qtd->error_count = 0;
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
+		break;
+	case UE_ISOCHRONOUS:
+		/* Should never get called for isochronous transfers. */
+		DWC_ASSERT(1, "NACK interrupt for ISOC transfer\n");
+		break;
+	}
+
+handle_nak_done:
+	disable_hc_int(hc_regs, nak);
+
+	return 1;
+}
+
+/**
+ * Handles a host channel ACK interrupt. This interrupt is enabled when
+ * performing the PING protocol in Slave mode, when errors occur during
+ * either Slave mode or DMA mode, and during Start Split transactions.
+ */
+static int32_t handle_hc_ack_intr(dwc_otg_hcd_t * hcd,
+				  dwc_hc_t * hc,
+				  dwc_otg_hc_regs_t * hc_regs,
+				  dwc_otg_qtd_t * qtd)
+{
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		    "ACK Received--\n", hc->hc_num);
+
+	if (hc->do_split) {
+		/*
+		 * Handle ACK on SSPLIT.
+		 * ACK should not occur in CSPLIT.
+		 */
+		if (!hc->ep_is_in && hc->data_pid_start != DWC_OTG_HC_PID_SETUP) {
+			qtd->ssplit_out_xfer_count = hc->xfer_len;
+		}
+		if (!(hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in)) {
+			/* Don't need complete for isochronous out transfers. */
+			qtd->complete_split = 1;
+		}
+
+		/* ISOC OUT */
+		if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in) {
+			switch (hc->xact_pos) {
+			case DWC_HCSPLIT_XACTPOS_ALL:
+				break;
+			case DWC_HCSPLIT_XACTPOS_END:
+				qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
+				qtd->isoc_split_offset = 0;
+				break;
+			case DWC_HCSPLIT_XACTPOS_BEGIN:
+			case DWC_HCSPLIT_XACTPOS_MID:
+				/*
+				 * For BEGIN or MID, calculate the length for
+				 * the next microframe to determine the correct
+				 * SSPLIT token, either MID or END.
+				 */
+				{
+					struct dwc_otg_hcd_iso_packet_desc
+					*frame_desc;
+
+					frame_desc =
+					    &qtd->urb->
+					    iso_descs[qtd->isoc_frame_index];
+					qtd->isoc_split_offset += 188;
+
+					if ((frame_desc->length -
+					     qtd->isoc_split_offset) <= 188) {
+						qtd->isoc_split_pos =
+						    DWC_HCSPLIT_XACTPOS_END;
+					} else {
+						qtd->isoc_split_pos =
+						    DWC_HCSPLIT_XACTPOS_MID;
+					}
+
+				}
+				break;
+			}
+		} else {
+			halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_ACK);
+		}
+	} else {
+		/*
+		 * An unmasked ACK on a non-split DMA transaction is
+		 * for the sole purpose of resetting error counts. Disable other
+		 * interrupts unmasked for the same reason.
+		 */
+		if(hcd->core_if->dma_enable) {
+			disable_hc_int(hc_regs, datatglerr);
+			disable_hc_int(hc_regs, nak);
+		}
+		qtd->error_count = 0;
+
+		if (hc->qh->ping_state) {
+			hc->qh->ping_state = 0;
+			/*
+			 * Halt the channel so the transfer can be re-started
+			 * from the appropriate point. This only happens in
+			 * Slave mode. In DMA mode, the ping_state is cleared
+			 * when the transfer is started because the core
+			 * automatically executes the PING, then the transfer.
+			 */
+			halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_ACK);
+		}
+	}
+
+	/*
+	 * If the ACK occurred when _not_ in the PING state, let the channel
+	 * continue transferring data after clearing the error count.
+	 */
+
+	disable_hc_int(hc_regs, ack);
+
+	return 1;
+}
+
+/**
+ * Handles a host channel NYET interrupt. This interrupt should only occur on
+ * Bulk and Control OUT endpoints and for complete split transactions. If a
+ * NYET occurs at the same time as a Transfer Complete interrupt, it is
+ * handled in the xfercomp interrupt handler, not here. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_nyet_intr(dwc_otg_hcd_t * hcd,
+				   dwc_hc_t * hc,
+				   dwc_otg_hc_regs_t * hc_regs,
+				   dwc_otg_qtd_t * qtd)
+{
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		    "NYET Received--\n", hc->hc_num);
+
+	/*
+	 * NYET on CSPLIT
+	 * re-do the CSPLIT immediately on non-periodic
+	 */
+	if (hc->do_split && hc->complete_split) {
+		if (hc->ep_is_in && (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
+		    && hcd->core_if->dma_enable) {
+			qtd->complete_split = 0;
+			qtd->isoc_split_offset = 0;
+			if (++qtd->isoc_frame_index == qtd->urb->packet_count) {
+				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+			}
+			else
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
+			goto handle_nyet_done;
+		}
+
+		if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+		    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+			int frnum = dwc_otg_hcd_get_frame_number(hcd);
+
+			// With the FIQ running we only ever see the failed NYET
+			if (dwc_full_frame_num(frnum) !=
+			    dwc_full_frame_num(hc->qh->sched_frame) ||
+			    fiq_fsm_enable) {
+				/*
+				 * No longer in the same full speed frame.
+				 * Treat this as a transaction error.
+				 */
+#if 0
+				/** @todo Fix system performance so this can
+				 * be treated as an error. Right now complete
+				 * splits cannot be scheduled precisely enough
+				 * due to other system activity, so this error
+				 * occurs regularly in Slave mode.
+				 */
+				qtd->error_count++;
+#endif
+				qtd->complete_split = 0;
+				halt_channel(hcd, hc, qtd,
+					     DWC_OTG_HC_XFER_XACT_ERR);
+				/** @todo add support for isoc release */
+				goto handle_nyet_done;
+			}
+		}
+
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NYET);
+		goto handle_nyet_done;
+	}
+
+	hc->qh->ping_state = 1;
+	qtd->error_count = 0;
+
+	update_urb_state_xfer_intr(hc, hc_regs, qtd->urb, qtd,
+				   DWC_OTG_HC_XFER_NYET);
+	dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+
+	/*
+	 * Halt the channel and re-start the transfer so the PING
+	 * protocol will start.
+	 */
+	halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NYET);
+
+handle_nyet_done:
+	disable_hc_int(hc_regs, nyet);
+	return 1;
+}
+
+/**
+ * Handles a host channel babble interrupt. This handler may be called in
+ * either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_babble_intr(dwc_otg_hcd_t * hcd,
+				     dwc_hc_t * hc,
+				     dwc_otg_hc_regs_t * hc_regs,
+				     dwc_otg_qtd_t * qtd)
+{
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		    "Babble Error--\n", hc->hc_num);
+
+	if (hcd->core_if->dma_desc_enable) {
+		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
+					       DWC_OTG_HC_XFER_BABBLE_ERR);
+		goto handle_babble_done;
+	}
+
+	if (hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+		hcd->fops->complete(hcd, qtd->urb->priv,
+				    qtd->urb, -DWC_E_OVERFLOW);
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_BABBLE_ERR);
+	} else {
+		dwc_otg_halt_status_e halt_status;
+		halt_status = update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+						    DWC_OTG_HC_XFER_BABBLE_ERR);
+		halt_channel(hcd, hc, qtd, halt_status);
+	}
+
+handle_babble_done:
+	disable_hc_int(hc_regs, bblerr);
+	return 1;
+}
+
+/**
+ * Handles a host channel AHB error interrupt. This handler is only called in
+ * DMA mode.
+ */
+static int32_t handle_hc_ahberr_intr(dwc_otg_hcd_t * hcd,
+				     dwc_hc_t * hc,
+				     dwc_otg_hc_regs_t * hc_regs,
+				     dwc_otg_qtd_t * qtd)
+{
+	hcchar_data_t hcchar;
+	hcsplt_data_t hcsplt;
+	hctsiz_data_t hctsiz;
+	uint32_t hcdma;
+	char *pipetype, *speed;
+
+	dwc_otg_hcd_urb_t *urb = qtd->urb;
+
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		    "AHB Error--\n", hc->hc_num);
+
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
+	hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+	hcdma = DWC_READ_REG32(&hc_regs->hcdma);
+
+	DWC_ERROR("AHB ERROR, Channel %d\n", hc->hc_num);
+	DWC_ERROR("  hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32, hcsplt.d32);
+	DWC_ERROR("  hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32, hcdma);
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Enqueue\n");
+	DWC_ERROR("  Device address: %d\n",
+		  dwc_otg_hcd_get_dev_addr(&urb->pipe_info));
+	DWC_ERROR("  Endpoint: %d, %s\n",
+		  dwc_otg_hcd_get_ep_num(&urb->pipe_info),
+		  (dwc_otg_hcd_is_pipe_in(&urb->pipe_info) ? "IN" : "OUT"));
+
+	switch (dwc_otg_hcd_get_pipe_type(&urb->pipe_info)) {
+	case UE_CONTROL:
+		pipetype = "CONTROL";
+		break;
+	case UE_BULK:
+		pipetype = "BULK";
+		break;
+	case UE_INTERRUPT:
+		pipetype = "INTERRUPT";
+		break;
+	case UE_ISOCHRONOUS:
+		pipetype = "ISOCHRONOUS";
+		break;
+	default:
+		pipetype = "UNKNOWN";
+		break;
+	}
+
+	DWC_ERROR("  Endpoint type: %s\n", pipetype);
+
+	switch (hc->speed) {
+	case DWC_OTG_EP_SPEED_HIGH:
+		speed = "HIGH";
+		break;
+	case DWC_OTG_EP_SPEED_FULL:
+		speed = "FULL";
+		break;
+	case DWC_OTG_EP_SPEED_LOW:
+		speed = "LOW";
+		break;
+	default:
+		speed = "UNKNOWN";
+		break;
+	};
+
+	DWC_ERROR("  Speed: %s\n", speed);
+
+	DWC_ERROR("  Max packet size: %d\n",
+		  dwc_otg_hcd_get_mps(&urb->pipe_info));
+	DWC_ERROR("  Data buffer length: %d\n", urb->length);
+	DWC_ERROR("  Transfer buffer: %p, Transfer DMA: %p\n",
+		  urb->buf, (void *)urb->dma);
+	DWC_ERROR("  Setup buffer: %p, Setup DMA: %p\n",
+		  urb->setup_packet, (void *)urb->setup_dma);
+	DWC_ERROR("  Interval: %d\n", urb->interval);
+
+	/* Core haltes the channel for Descriptor DMA mode */
+	if (hcd->core_if->dma_desc_enable) {
+		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
+					       DWC_OTG_HC_XFER_AHB_ERR);
+		goto handle_ahberr_done;
+	}
+
+	hcd->fops->complete(hcd, urb->priv, urb, -DWC_E_IO);
+
+	/*
+	 * Force a channel halt. Don't call halt_channel because that won't
+	 * write to the HCCHARn register in DMA mode to force the halt.
+	 */
+	dwc_otg_hc_halt(hcd->core_if, hc, DWC_OTG_HC_XFER_AHB_ERR);
+handle_ahberr_done:
+	disable_hc_int(hc_regs, ahberr);
+	return 1;
+}
+
+/**
+ * Handles a host channel transaction error interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_xacterr_intr(dwc_otg_hcd_t * hcd,
+				      dwc_hc_t * hc,
+				      dwc_otg_hc_regs_t * hc_regs,
+				      dwc_otg_qtd_t * qtd)
+{
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		    "Transaction Error--\n", hc->hc_num);
+
+	if (hcd->core_if->dma_desc_enable) {
+		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
+					       DWC_OTG_HC_XFER_XACT_ERR);
+		goto handle_xacterr_done;
+	}
+
+	switch (dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
+	case UE_CONTROL:
+	case UE_BULK:
+		qtd->error_count++;
+		if (!hc->qh->ping_state) {
+
+			update_urb_state_xfer_intr(hc, hc_regs,
+						   qtd->urb, qtd,
+						   DWC_OTG_HC_XFER_XACT_ERR);
+			dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+			if (!hc->ep_is_in && hc->speed == DWC_OTG_EP_SPEED_HIGH) {
+				hc->qh->ping_state = 1;
+			}
+		}
+
+		/*
+		 * Halt the channel so the transfer can be re-started from
+		 * the appropriate point or the PING protocol will start.
+		 */
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+		break;
+	case UE_INTERRUPT:
+		qtd->error_count++;
+		if (hc->do_split && hc->complete_split) {
+			qtd->complete_split = 0;
+		}
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+		break;
+	case UE_ISOCHRONOUS:
+		{
+			dwc_otg_halt_status_e halt_status;
+			halt_status =
+			    update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+						  DWC_OTG_HC_XFER_XACT_ERR);
+
+			halt_channel(hcd, hc, qtd, halt_status);
+		}
+		break;
+	}
+handle_xacterr_done:
+	disable_hc_int(hc_regs, xacterr);
+
+	return 1;
+}
+
+/**
+ * Handles a host channel frame overrun interrupt. This handler may be called
+ * in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_frmovrun_intr(dwc_otg_hcd_t * hcd,
+				       dwc_hc_t * hc,
+				       dwc_otg_hc_regs_t * hc_regs,
+				       dwc_otg_qtd_t * qtd)
+{
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		    "Frame Overrun--\n", hc->hc_num);
+
+	switch (dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
+	case UE_CONTROL:
+	case UE_BULK:
+		break;
+	case UE_INTERRUPT:
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_FRAME_OVERRUN);
+		break;
+	case UE_ISOCHRONOUS:
+		{
+			dwc_otg_halt_status_e halt_status;
+			halt_status =
+			    update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+						  DWC_OTG_HC_XFER_FRAME_OVERRUN);
+
+			halt_channel(hcd, hc, qtd, halt_status);
+		}
+		break;
+	}
+
+	disable_hc_int(hc_regs, frmovrun);
+
+	return 1;
+}
+
+/**
+ * Handles a host channel data toggle error interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_datatglerr_intr(dwc_otg_hcd_t * hcd,
+					 dwc_hc_t * hc,
+					 dwc_otg_hc_regs_t * hc_regs,
+					 dwc_otg_qtd_t * qtd)
+{
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		"Data Toggle Error on %s transfer--\n",
+		hc->hc_num, (hc->ep_is_in ? "IN" : "OUT"));
+
+	/* Data toggles on split transactions cause the hc to halt.
+	 * restart transfer */
+	if(hc->qh->do_split)
+	{
+		qtd->error_count++;
+		dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+		update_urb_state_xfer_intr(hc, hc_regs,
+			qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+	} else if (hc->ep_is_in) {
+		/* An unmasked data toggle error on a non-split DMA transaction is
+		 * for the sole purpose of resetting error counts. Disable other
+		 * interrupts unmasked for the same reason.
+		 */
+		if(hcd->core_if->dma_enable) {
+			disable_hc_int(hc_regs, ack);
+			disable_hc_int(hc_regs, nak);
+		}
+		qtd->error_count = 0;
+	}
+
+	disable_hc_int(hc_regs, datatglerr);
+
+	return 1;
+}
+
+#ifdef DEBUG
+/**
+ * This function is for debug only. It checks that a valid halt status is set
+ * and that HCCHARn.chdis is clear. If there's a problem, corrective action is
+ * taken and a warning is issued.
+ * @return 1 if halt status is ok, 0 otherwise.
+ */
+static inline int halt_status_ok(dwc_otg_hcd_t * hcd,
+				 dwc_hc_t * hc,
+				 dwc_otg_hc_regs_t * hc_regs,
+				 dwc_otg_qtd_t * qtd)
+{
+	hcchar_data_t hcchar;
+	hctsiz_data_t hctsiz;
+	hcint_data_t hcint;
+	hcintmsk_data_t hcintmsk;
+	hcsplt_data_t hcsplt;
+
+	if (hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS) {
+		/*
+		 * This code is here only as a check. This condition should
+		 * never happen. Ignore the halt if it does occur.
+		 */
+		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+		hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
+		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+		hcintmsk.d32 = DWC_READ_REG32(&hc_regs->hcintmsk);
+		hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
+		DWC_WARN
+		    ("%s: hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS, "
+		     "channel %d, hcchar 0x%08x, hctsiz 0x%08x, "
+		     "hcint 0x%08x, hcintmsk 0x%08x, "
+		     "hcsplt 0x%08x, qtd->complete_split %d\n", __func__,
+		     hc->hc_num, hcchar.d32, hctsiz.d32, hcint.d32,
+		     hcintmsk.d32, hcsplt.d32, qtd->complete_split);
+
+		DWC_WARN("%s: no halt status, channel %d, ignoring interrupt\n",
+			 __func__, hc->hc_num);
+		DWC_WARN("\n");
+		clear_hc_int(hc_regs, chhltd);
+		return 0;
+	}
+
+	/*
+	 * This code is here only as a check. hcchar.chdis should
+	 * never be set when the halt interrupt occurs. Halt the
+	 * channel again if it does occur.
+	 */
+	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
+	if (hcchar.b.chdis) {
+		DWC_WARN("%s: hcchar.chdis set unexpectedly, "
+			 "hcchar 0x%08x, trying to halt again\n",
+			 __func__, hcchar.d32);
+		clear_hc_int(hc_regs, chhltd);
+		hc->halt_pending = 0;
+		halt_channel(hcd, hc, qtd, hc->halt_status);
+		return 0;
+	}
+
+	return 1;
+}
+#endif
+
+/**
+ * Handles a host Channel Halted interrupt in DMA mode. This handler
+ * determines the reason the channel halted and proceeds accordingly.
+ */
+static void handle_hc_chhltd_intr_dma(dwc_otg_hcd_t * hcd,
+				      dwc_hc_t * hc,
+				      dwc_otg_hc_regs_t * hc_regs,
+				      dwc_otg_qtd_t * qtd)
+{
+	int out_nak_enh = 0;
+	hcint_data_t hcint;
+	hcintmsk_data_t hcintmsk;
+	/* For core with OUT NAK enhancement, the flow for high-
+	 * speed CONTROL/BULK OUT is handled a little differently.
+	 */
+	if (hcd->core_if->snpsid >= OTG_CORE_REV_2_71a) {
+		if (hc->speed == DWC_OTG_EP_SPEED_HIGH && !hc->ep_is_in &&
+		    (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+		     hc->ep_type == DWC_OTG_EP_TYPE_BULK)) {
+			out_nak_enh = 1;
+		}
+	}
+
+	if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
+	    (hc->halt_status == DWC_OTG_HC_XFER_AHB_ERR
+	     && !hcd->core_if->dma_desc_enable)) {
+		/*
+		 * Just release the channel. A dequeue can happen on a
+		 * transfer timeout. In the case of an AHB Error, the channel
+		 * was forced to halt because there's no way to gracefully
+		 * recover.
+		 */
+		if (hcd->core_if->dma_desc_enable)
+			dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
+						       hc->halt_status);
+		else
+			release_channel(hcd, hc, qtd, hc->halt_status);
+		return;
+	}
+
+	/* Read the HCINTn register to determine the cause for the halt. */
+
+	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+	hcintmsk.d32 = DWC_READ_REG32(&hc_regs->hcintmsk);
+
+	if (hcint.b.xfercomp) {
+		/** @todo This is here because of a possible hardware bug.  Spec
+		 * says that on SPLIT-ISOC OUT transfers in DMA mode that a HALT
+		 * interrupt w/ACK bit set should occur, but I only see the
+		 * XFERCOMP bit, even with it masked out.  This is a workaround
+		 * for that behavior.  Should fix this when hardware is fixed.
+		 */
+		if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in) {
+			handle_hc_ack_intr(hcd, hc, hc_regs, qtd);
+		}
+		handle_hc_xfercomp_intr(hcd, hc, hc_regs, qtd);
+	} else if (hcint.b.stall) {
+		handle_hc_stall_intr(hcd, hc, hc_regs, qtd);
+	} else if (hcint.b.xacterr && !hcd->core_if->dma_desc_enable) {
+		if (out_nak_enh) {
+			if (hcint.b.nyet || hcint.b.nak || hcint.b.ack) {
+				DWC_DEBUGPL(DBG_HCD, "XactErr with NYET/NAK/ACK\n");
+				qtd->error_count = 0;
+			} else {
+				DWC_DEBUGPL(DBG_HCD, "XactErr without NYET/NAK/ACK\n");
+			}
+		}
+
+		/*
+		 * Must handle xacterr before nak or ack. Could get a xacterr
+		 * at the same time as either of these on a BULK/CONTROL OUT
+		 * that started with a PING. The xacterr takes precedence.
+		 */
+		handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
+	} else if (hcint.b.xcs_xact && hcd->core_if->dma_desc_enable) {
+		handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
+	} else if (hcint.b.ahberr && hcd->core_if->dma_desc_enable) {
+		handle_hc_ahberr_intr(hcd, hc, hc_regs, qtd);
+	} else if (hcint.b.bblerr) {
+		handle_hc_babble_intr(hcd, hc, hc_regs, qtd);
+	} else if (hcint.b.frmovrun) {
+		handle_hc_frmovrun_intr(hcd, hc, hc_regs, qtd);
+	} else if (hcint.b.datatglerr) {
+		handle_hc_datatglerr_intr(hcd, hc, hc_regs, qtd);
+	} else if (!out_nak_enh) {
+		if (hcint.b.nyet) {
+			/*
+			 * Must handle nyet before nak or ack. Could get a nyet at the
+			 * same time as either of those on a BULK/CONTROL OUT that
+			 * started with a PING. The nyet takes precedence.
+			 */
+			handle_hc_nyet_intr(hcd, hc, hc_regs, qtd);
+		} else if (hcint.b.nak && !hcintmsk.b.nak) {
+			/*
+			 * If nak is not masked, it's because a non-split IN transfer
+			 * is in an error state. In that case, the nak is handled by
+			 * the nak interrupt handler, not here. Handle nak here for
+			 * BULK/CONTROL OUT transfers, which halt on a NAK to allow
+			 * rewinding the buffer pointer.
+			 */
+			handle_hc_nak_intr(hcd, hc, hc_regs, qtd);
+		} else if (hcint.b.ack && !hcintmsk.b.ack) {
+			/*
+			 * If ack is not masked, it's because a non-split IN transfer
+			 * is in an error state. In that case, the ack is handled by
+			 * the ack interrupt handler, not here. Handle ack here for
+			 * split transfers. Start splits halt on ACK.
+			 */
+			handle_hc_ack_intr(hcd, hc, hc_regs, qtd);
+		} else {
+			if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+			    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+				/*
+				 * A periodic transfer halted with no other channel
+				 * interrupts set. Assume it was halted by the core
+				 * because it could not be completed in its scheduled
+				 * (micro)frame.
+				 */
+#ifdef DEBUG
+				DWC_PRINTF
+				    ("%s: Halt channel %d (assume incomplete periodic transfer)\n",
+				     __func__, hc->hc_num);
+#endif
+				halt_channel(hcd, hc, qtd,
+					     DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE);
+			} else {
+				DWC_ERROR
+				    ("%s: Channel %d, DMA Mode -- ChHltd set, but reason "
+				     "for halting is unknown, hcint 0x%08x, intsts 0x%08x\n",
+				     __func__, hc->hc_num, hcint.d32,
+				     DWC_READ_REG32(&hcd->
+						    core_if->core_global_regs->
+						    gintsts));
+				/* Failthrough: use 3-strikes rule */
+				qtd->error_count++;
+				dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+				update_urb_state_xfer_intr(hc, hc_regs,
+					   qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+				halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+			}
+
+		}
+	} else {
+		DWC_PRINTF("NYET/NAK/ACK/other in non-error case, 0x%08x\n",
+			   hcint.d32);
+		/* Failthrough: use 3-strikes rule */
+		qtd->error_count++;
+		dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+		update_urb_state_xfer_intr(hc, hc_regs,
+			   qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+	}
+}
+
+/**
+ * Handles a host channel Channel Halted interrupt.
+ *
+ * In slave mode, this handler is called only when the driver specifically
+ * requests a halt. This occurs during handling other host channel interrupts
+ * (e.g. nak, xacterr, stall, nyet, etc.).
+ *
+ * In DMA mode, this is the interrupt that occurs when the core has finished
+ * processing a transfer on a channel. Other host channel interrupts (except
+ * ahberr) are disabled in DMA mode.
+ */
+static int32_t handle_hc_chhltd_intr(dwc_otg_hcd_t * hcd,
+				     dwc_hc_t * hc,
+				     dwc_otg_hc_regs_t * hc_regs,
+				     dwc_otg_qtd_t * qtd)
+{
+	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
+		    "Channel Halted--\n", hc->hc_num);
+
+	if (hcd->core_if->dma_enable) {
+		handle_hc_chhltd_intr_dma(hcd, hc, hc_regs, qtd);
+	} else {
+#ifdef DEBUG
+		if (!halt_status_ok(hcd, hc, hc_regs, qtd)) {
+			return 1;
+		}
+#endif
+		release_channel(hcd, hc, qtd, hc->halt_status);
+	}
+
+	return 1;
+}
+
+
+/**
+ * dwc_otg_fiq_unmangle_isoc() - Update the iso_frame_desc structure on
+ * FIQ transfer completion
+ * @hcd:	Pointer to dwc_otg_hcd struct
+ * @num:	Host channel number
+ *
+ * 1. Un-mangle the status as recorded in each iso_frame_desc status
+ * 2. Copy it from the dwc_otg_urb into the real URB
+ */
+void dwc_otg_fiq_unmangle_isoc(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh, dwc_otg_qtd_t *qtd, uint32_t num)
+{
+	struct dwc_otg_hcd_urb *dwc_urb = qtd->urb;
+	int nr_frames = dwc_urb->packet_count;
+	int i;
+	hcint_data_t frame_hcint;
+
+	for (i = 0; i < nr_frames; i++) {
+		frame_hcint.d32 = dwc_urb->iso_descs[i].status;
+		if (frame_hcint.b.xfercomp) {
+			dwc_urb->iso_descs[i].status = 0;
+			dwc_urb->actual_length += dwc_urb->iso_descs[i].actual_length;
+		} else if (frame_hcint.b.frmovrun) {
+			if (qh->ep_is_in)
+				dwc_urb->iso_descs[i].status = -DWC_E_NO_STREAM_RES;
+			else
+				dwc_urb->iso_descs[i].status = -DWC_E_COMMUNICATION;
+			dwc_urb->error_count++;
+			dwc_urb->iso_descs[i].actual_length = 0;
+		} else if (frame_hcint.b.xacterr) {
+			dwc_urb->iso_descs[i].status = -DWC_E_PROTOCOL;
+			dwc_urb->error_count++;
+			dwc_urb->iso_descs[i].actual_length = 0;
+		} else if (frame_hcint.b.bblerr) {
+			dwc_urb->iso_descs[i].status = -DWC_E_OVERFLOW;
+			dwc_urb->error_count++;
+			dwc_urb->iso_descs[i].actual_length = 0;
+		} else {
+			/* Something went wrong */
+			dwc_urb->iso_descs[i].status = -1;
+			dwc_urb->iso_descs[i].actual_length = 0;
+			dwc_urb->error_count++;
+		}
+	}
+	//printk_ratelimited(KERN_INFO "%s: HS isochronous of %d/%d frames with %d errors complete\n",
+	//			__FUNCTION__, i, dwc_urb->packet_count, dwc_urb->error_count);
+	hcd->fops->complete(hcd, dwc_urb->priv, dwc_urb, 0);
+	release_channel(hcd, qh->channel, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+}
+
+/**
+ * dwc_otg_fiq_unsetup_per_dma() - Remove data from bounce buffers for split transactions
+ * @hcd:	Pointer to dwc_otg_hcd struct
+ * @num:	Host channel number
+ *
+ * Copies data from the FIQ bounce buffers into the URB's transfer buffer. Does not modify URB state.
+ * Returns total length of data or -1 if the buffers were not used.
+ *
+ */
+int dwc_otg_fiq_unsetup_per_dma(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh, dwc_otg_qtd_t *qtd, uint32_t num)
+{
+	dwc_hc_t *hc = qh->channel;
+	struct fiq_dma_blob *blob = hcd->fiq_dmab;
+	struct fiq_channel_state *st = &hcd->fiq_state->channel[num];
+	uint8_t *ptr = NULL;
+	int index = 0, len = 0;
+	int i = 0;
+	if (hc->ep_is_in) {
+		/* Copy data out of the DMA bounce buffers to the URB's buffer.
+		 * The align_buf is ignored as this is ignored on FSM enqueue. */
+		ptr = qtd->urb->buf;
+		if (qh->ep_type == UE_ISOCHRONOUS) {
+			/* Isoc IN transactions - grab the offset of the iso_frame_desc into the URB transfer buffer */
+			index = qtd->isoc_frame_index;
+			ptr += qtd->urb->iso_descs[index].offset;
+		} else {
+			/* Need to increment by actual_length for interrupt IN */
+			ptr += qtd->urb->actual_length;
+		}
+
+		for (i = 0; i < st->dma_info.index; i++) {
+			len += st->dma_info.slot_len[i];
+			dwc_memcpy(ptr, &blob->channel[num].index[i].buf[0], st->dma_info.slot_len[i]);
+			ptr += st->dma_info.slot_len[i];
+		}
+		return len;
+	} else {
+		/* OUT endpoints - nothing to do. */
+		return -1;
+	}
+
+}
+/**
+ * dwc_otg_hcd_handle_hc_fsm() - handle an unmasked channel interrupt
+ * 				 from a channel handled in the FIQ
+ * @hcd:	Pointer to dwc_otg_hcd struct
+ * @num:	Host channel number
+ *
+ * If a host channel interrupt was received by the IRQ and this was a channel
+ * used by the FIQ, the execution flow for transfer completion is substantially
+ * different from the normal (messy) path. This function and its friends handles
+ * channel cleanup and transaction completion from a FIQ transaction.
+ */
+void dwc_otg_hcd_handle_hc_fsm(dwc_otg_hcd_t *hcd, uint32_t num)
+{
+	struct fiq_channel_state *st = &hcd->fiq_state->channel[num];
+	dwc_hc_t *hc = hcd->hc_ptr_array[num];
+	dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&hc->qh->qtd_list);
+	dwc_otg_qh_t *qh = hc->qh;
+	dwc_otg_hc_regs_t *hc_regs = hcd->core_if->host_if->hc_regs[num];
+	hcint_data_t hcint = hcd->fiq_state->channel[num].hcint_copy;
+	int hostchannels  = 0;
+	fiq_print(FIQDBG_INT, hcd->fiq_state, "OUT %01d %01d ", num , st->fsm);
+
+	hostchannels = hcd->available_host_channels;
+	switch (st->fsm) {
+	case FIQ_TEST:
+		break;
+
+	case FIQ_DEQUEUE_ISSUED:
+		/* hc_halt was called. QTD no longer exists. */
+		/* TODO: for a nonperiodic split transaction, need to issue a
+		 * CLEAR_TT_BUFFER hub command if we were in the start-split phase.
+		 */
+		release_channel(hcd, hc, NULL, hc->halt_status);
+		break;
+
+	case FIQ_NP_SPLIT_DONE:
+		/* Nonperiodic transaction complete. */
+		if (!hc->ep_is_in) {
+			qtd->ssplit_out_xfer_count = hc->xfer_len;
+		}
+		if (hcint.b.xfercomp) {
+			handle_hc_xfercomp_intr(hcd, hc, hc_regs, qtd);
+		} else if (hcint.b.nak) {
+			handle_hc_nak_intr(hcd, hc, hc_regs, qtd);
+		}
+		break;
+
+	case FIQ_NP_SPLIT_HS_ABORTED:
+		/* A HS abort is a 3-strikes on the HS bus at any point in the transaction.
+		 * Normally a CLEAR_TT_BUFFER hub command would be required: we can't do that
+		 * because there's no guarantee which order a non-periodic split happened in.
+		 * We could end up clearing a perfectly good transaction out of the buffer.
+		 */
+		if (hcint.b.xacterr) {
+			qtd->error_count += st->nr_errors;
+			handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
+		} else if (hcint.b.ahberr) {
+			handle_hc_ahberr_intr(hcd, hc, hc_regs, qtd);
+		} else {
+			local_fiq_disable();
+			BUG();
+		}
+		break;
+
+	case FIQ_NP_SPLIT_LS_ABORTED:
+		/* A few cases can cause this - either an unknown state on a SSPLIT or
+		 * STALL/data toggle error response on a CSPLIT */
+		if (hcint.b.stall) {
+			handle_hc_stall_intr(hcd, hc, hc_regs, qtd);
+		} else if (hcint.b.datatglerr) {
+			handle_hc_datatglerr_intr(hcd, hc, hc_regs, qtd);
+		} else if (hcint.b.bblerr) {
+			handle_hc_babble_intr(hcd, hc, hc_regs, qtd);
+		} else if (hcint.b.ahberr) {
+			handle_hc_ahberr_intr(hcd, hc, hc_regs, qtd);
+		} else {
+			local_fiq_disable();
+			BUG();
+		}
+		break;
+
+	case FIQ_PER_SPLIT_DONE:
+		/* Isoc IN or Interrupt IN/OUT */
+
+		/* Flow control here is different from the normal execution by the driver.
+		* We need to completely ignore most of the driver's method of handling
+		* split transactions and do it ourselves.
+		*/
+		if (hc->ep_type == UE_INTERRUPT) {
+			if (hcint.b.nak) {
+					handle_hc_nak_intr(hcd, hc, hc_regs, qtd);
+			} else if (hc->ep_is_in) {
+				int len;
+				len = dwc_otg_fiq_unsetup_per_dma(hcd, hc->qh, qtd, num);
+				//printk(KERN_NOTICE "FIQ Transaction: hc=%d len=%d urb_len = %d\n", num, len, qtd->urb->length);
+				qtd->urb->actual_length += len;
+				if (qtd->urb->actual_length >= qtd->urb->length) {
+					qtd->urb->status = 0;
+					hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, qtd->urb->status);
+					release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+				} else {
+					/* Interrupt transfer not complete yet - is it a short read? */
+					if (len < hc->max_packet) {
+						/* Interrupt transaction complete */
+						qtd->urb->status = 0;
+						hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, qtd->urb->status);
+						release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+					} else {
+						/* Further transactions required */
+						release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
+					}
+				}
+			} else {
+				/* Interrupt OUT complete. */
+				dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
+				qtd->urb->actual_length += hc->xfer_len;
+				if (qtd->urb->actual_length >= qtd->urb->length) {
+					qtd->urb->status = 0;
+					hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, qtd->urb->status);
+					release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+				} else {
+					release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
+				}
+			}
+		} else {
+			/* ISOC IN complete. */
+			struct dwc_otg_hcd_iso_packet_desc *frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
+			int len = 0;
+			/* Record errors, update qtd. */
+			if (st->nr_errors) {
+				frame_desc->actual_length = 0;
+				frame_desc->status = -DWC_E_PROTOCOL;
+			} else {
+				frame_desc->status = 0;
+				/* Unswizzle dma */
+				len = dwc_otg_fiq_unsetup_per_dma(hcd, qh, qtd, num);
+				frame_desc->actual_length = len;
+			}
+			qtd->isoc_frame_index++;
+			if (qtd->isoc_frame_index == qtd->urb->packet_count) {
+				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+			} else {
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
+			}
+		}
+		break;
+
+	case FIQ_PER_ISO_OUT_DONE: {
+			struct dwc_otg_hcd_iso_packet_desc *frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
+			/* Record errors, update qtd. */
+			if (st->nr_errors) {
+				frame_desc->actual_length = 0;
+				frame_desc->status = -DWC_E_PROTOCOL;
+			} else {
+				frame_desc->status = 0;
+				frame_desc->actual_length = frame_desc->length;
+			}
+			qtd->isoc_frame_index++;
+			qtd->isoc_split_offset = 0;
+			if (qtd->isoc_frame_index == qtd->urb->packet_count) {
+				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+			} else {
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
+			}
+		}
+		break;
+
+	case FIQ_PER_SPLIT_NYET_ABORTED:
+		/* Doh. lost the data. */
+		printk_ratelimited(KERN_INFO "Transfer to device %d endpoint 0x%x frame %d failed "
+				"- FIQ reported NYET. Data may have been lost.\n",
+				hc->dev_addr, hc->ep_num, dwc_otg_hcd_get_frame_number(hcd) >> 3);
+		if (hc->ep_type == UE_ISOCHRONOUS) {
+			struct dwc_otg_hcd_iso_packet_desc *frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
+			/* Record errors, update qtd. */
+			frame_desc->actual_length = 0;
+			frame_desc->status = -DWC_E_PROTOCOL;
+			qtd->isoc_frame_index++;
+			qtd->isoc_split_offset = 0;
+			if (qtd->isoc_frame_index == qtd->urb->packet_count) {
+				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+			} else {
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
+			}
+		} else {
+			release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
+		}
+		break;
+
+	case FIQ_HS_ISOC_DONE:
+		/* The FIQ has performed a whole pile of isochronous transactions.
+		 * The status is recorded as the interrupt state should the transaction
+		 * fail.
+		 */
+		dwc_otg_fiq_unmangle_isoc(hcd, qh, qtd, num);
+		break;
+
+	case FIQ_PER_SPLIT_LS_ABORTED:
+		if (hcint.b.xacterr) {
+			/* Hub has responded with an ERR packet. Device
+			 * has been unplugged or the port has been disabled.
+			 * TODO: need to issue a reset to the hub port. */
+			qtd->error_count += 3;
+			handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
+		} else if (hcint.b.stall) {
+			handle_hc_stall_intr(hcd, hc, hc_regs, qtd);
+		} else if (hcint.b.bblerr) {
+			handle_hc_babble_intr(hcd, hc, hc_regs, qtd);
+		} else {
+			printk_ratelimited(KERN_INFO "Transfer to device %d endpoint 0x%x failed "
+				"- FIQ reported FSM=%d. Data may have been lost.\n",
+				st->fsm, hc->dev_addr, hc->ep_num);
+			release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
+		}
+		break;
+
+	case FIQ_PER_SPLIT_HS_ABORTED:
+		/* Either the SSPLIT phase suffered transaction errors or something
+		 * unexpected happened.
+		 */
+		qtd->error_count += 3;
+		handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
+		release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
+		break;
+
+	case FIQ_PER_SPLIT_TIMEOUT:
+		/* Couldn't complete in the nominated frame */
+		printk(KERN_INFO "Transfer to device %d endpoint 0x%x frame %d failed "
+				"- FIQ timed out. Data may have been lost.\n",
+				hc->dev_addr, hc->ep_num, dwc_otg_hcd_get_frame_number(hcd) >> 3);
+		if (hc->ep_type == UE_ISOCHRONOUS) {
+			struct dwc_otg_hcd_iso_packet_desc *frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
+			/* Record errors, update qtd. */
+			frame_desc->actual_length = 0;
+			if (hc->ep_is_in) {
+				frame_desc->status = -DWC_E_NO_STREAM_RES;
+			} else {
+				frame_desc->status = -DWC_E_COMMUNICATION;
+			}
+			qtd->isoc_frame_index++;
+			if (qtd->isoc_frame_index == qtd->urb->packet_count) {
+				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
+			} else {
+				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
+			}
+		} else {
+			release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
+		}
+		break;
+
+	default:
+		DWC_WARN("Unexpected state received on hc=%d fsm=%d on transfer to device %d ep 0x%x", 
+					hc->hc_num, st->fsm, hc->dev_addr, hc->ep_num);
+		qtd->error_count++;
+		release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
+	}
+	return;
+}
+
+/** Handles interrupt for a specific Host Channel */
+int32_t dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd_t * dwc_otg_hcd, uint32_t num)
+{
+	int retval = 0;
+	hcint_data_t hcint;
+	hcintmsk_data_t hcintmsk;
+	dwc_hc_t *hc;
+	dwc_otg_hc_regs_t *hc_regs;
+	dwc_otg_qtd_t *qtd;
+
+	DWC_DEBUGPL(DBG_HCDV, "--Host Channel Interrupt--, Channel %d\n", num);
+
+	hc = dwc_otg_hcd->hc_ptr_array[num];
+	hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[num];
+	if(hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
+		/* We are responding to a channel disable. Driver
+		 * state is cleared - our qtd has gone away.
+		 */
+		release_channel(dwc_otg_hcd, hc, NULL, hc->halt_status);
+		return 1;
+	}
+	qtd = DWC_CIRCLEQ_FIRST(&hc->qh->qtd_list);
+
+	/*
+	 * FSM mode: Check to see if this is a HC interrupt from a channel handled by the FIQ.
+	 * Execution path is fundamentally different for the channels after a FIQ has completed
+	 * a split transaction.
+	 */
+	if (fiq_fsm_enable) {
+		switch (dwc_otg_hcd->fiq_state->channel[num].fsm) {
+			case FIQ_PASSTHROUGH:
+				break;
+			case FIQ_PASSTHROUGH_ERRORSTATE:
+				/* Hook into the error count */
+				fiq_print(FIQDBG_ERR, dwc_otg_hcd->fiq_state, "HCDERR%02d", num);
+				if (!dwc_otg_hcd->fiq_state->channel[num].nr_errors) {
+					qtd->error_count = 0;
+					fiq_print(FIQDBG_ERR, dwc_otg_hcd->fiq_state, "RESET   ");
+				}
+				break;
+			default:
+				dwc_otg_hcd_handle_hc_fsm(dwc_otg_hcd, num);
+				return 1;
+		}
+	}
+
+	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
+	hcintmsk.d32 = DWC_READ_REG32(&hc_regs->hcintmsk);
+	hcint.d32 = hcint.d32 & hcintmsk.d32;
+	if (!dwc_otg_hcd->core_if->dma_enable) {
+		if (hcint.b.chhltd && hcint.d32 != 0x2) {
+			hcint.b.chhltd = 0;
+		}
+	}
+
+	if (hcint.b.xfercomp) {
+		retval |=
+		    handle_hc_xfercomp_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+		/*
+		 * If NYET occurred at same time as Xfer Complete, the NYET is
+		 * handled by the Xfer Complete interrupt handler. Don't want
+		 * to call the NYET interrupt handler in this case.
+		 */
+		hcint.b.nyet = 0;
+	}
+	if (hcint.b.chhltd) {
+		retval |= handle_hc_chhltd_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+	if (hcint.b.ahberr) {
+		retval |= handle_hc_ahberr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+	if (hcint.b.stall) {
+		retval |= handle_hc_stall_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+	if (hcint.b.nak) {
+		retval |= handle_hc_nak_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+	if (hcint.b.ack) {
+		if(!hcint.b.chhltd)
+			retval |= handle_hc_ack_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+	if (hcint.b.nyet) {
+		retval |= handle_hc_nyet_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+	if (hcint.b.xacterr) {
+		retval |= handle_hc_xacterr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+	if (hcint.b.bblerr) {
+		retval |= handle_hc_babble_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+	if (hcint.b.frmovrun) {
+		retval |=
+		    handle_hc_frmovrun_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+	if (hcint.b.datatglerr) {
+		retval |=
+		    handle_hc_datatglerr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+	}
+
+	return retval;
+}
+#endif /* DWC_DEVICE_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,994 @@
+
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_linux.c $
+ * $Revision: #20 $
+ * $Date: 2011/10/26 $
+ * $Change: 1872981 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/**
+ * @file
+ *
+ * This file contains the implementation of the HCD. In Linux, the HCD
+ * implements the hc_driver API.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/dma-mapping.h>
+#include <linux/version.h>
+#include <asm/io.h>
+#include <asm/fiq.h>
+#include <linux/usb.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35)
+#include <../drivers/usb/core/hcd.h>
+#else
+#include <linux/usb/hcd.h>
+#endif
+#include <asm/bug.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30))
+#define USB_URB_EP_LINKING 1
+#else
+#define USB_URB_EP_LINKING 0
+#endif
+
+#include "dwc_otg_hcd_if.h"
+#include "dwc_otg_dbg.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_hcd.h"
+
+extern unsigned char  _dwc_otg_fiq_stub, _dwc_otg_fiq_stub_end;
+
+/**
+ * Gets the endpoint number from a _bEndpointAddress argument. The endpoint is
+ * qualified with its direction (possible 32 endpoints per device).
+ */
+#define dwc_ep_addr_to_endpoint(_bEndpointAddress_) ((_bEndpointAddress_ & USB_ENDPOINT_NUMBER_MASK) | \
+						     ((_bEndpointAddress_ & USB_DIR_IN) != 0) << 4)
+
+static const char dwc_otg_hcd_name[] = "dwc_otg_hcd";
+
+extern bool fiq_enable;
+
+/** @name Linux HC Driver API Functions */
+/** @{ */
+/* manage i/o requests, device state */
+static int dwc_otg_urb_enqueue(struct usb_hcd *hcd,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+		       struct usb_host_endpoint *ep,
+#endif
+		       struct urb *urb, gfp_t mem_flags);
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+static int dwc_otg_urb_dequeue(struct usb_hcd *hcd, struct urb *urb);
+#endif
+#else /* kernels at or post 2.6.30 */
+static int dwc_otg_urb_dequeue(struct usb_hcd *hcd,
+                               struct urb *urb, int status);
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30) */
+
+static void endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
+static void endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
+#endif
+static irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd);
+extern int hcd_start(struct usb_hcd *hcd);
+extern void hcd_stop(struct usb_hcd *hcd);
+static int get_frame_number(struct usb_hcd *hcd);
+extern int hub_status_data(struct usb_hcd *hcd, char *buf);
+extern int hub_control(struct usb_hcd *hcd,
+		       u16 typeReq,
+		       u16 wValue, u16 wIndex, char *buf, u16 wLength);
+
+struct wrapper_priv_data {
+	dwc_otg_hcd_t *dwc_otg_hcd;
+};
+
+/** @} */
+
+static struct hc_driver dwc_otg_hc_driver = {
+
+	.description = dwc_otg_hcd_name,
+	.product_desc = "DWC OTG Controller",
+	.hcd_priv_size = sizeof(struct wrapper_priv_data),
+
+	.irq = dwc_otg_hcd_irq,
+
+	.flags = HCD_MEMORY | HCD_USB2,
+
+	//.reset =
+	.start = hcd_start,
+	//.suspend =
+	//.resume =
+	.stop = hcd_stop,
+
+	.urb_enqueue = dwc_otg_urb_enqueue,
+	.urb_dequeue = dwc_otg_urb_dequeue,
+	.endpoint_disable = endpoint_disable,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
+	.endpoint_reset = endpoint_reset,
+#endif
+	.get_frame_number = get_frame_number,
+
+	.hub_status_data = hub_status_data,
+	.hub_control = hub_control,
+	//.bus_suspend =
+	//.bus_resume =
+};
+
+/** Gets the dwc_otg_hcd from a struct usb_hcd */
+static inline dwc_otg_hcd_t *hcd_to_dwc_otg_hcd(struct usb_hcd *hcd)
+{
+	struct wrapper_priv_data *p;
+	p = (struct wrapper_priv_data *)(hcd->hcd_priv);
+	return p->dwc_otg_hcd;
+}
+
+/** Gets the struct usb_hcd that contains a dwc_otg_hcd_t. */
+static inline struct usb_hcd *dwc_otg_hcd_to_hcd(dwc_otg_hcd_t * dwc_otg_hcd)
+{
+	return dwc_otg_hcd_get_priv_data(dwc_otg_hcd);
+}
+
+/** Gets the usb_host_endpoint associated with an URB. */
+inline struct usb_host_endpoint *dwc_urb_to_endpoint(struct urb *urb)
+{
+	struct usb_device *dev = urb->dev;
+	int ep_num = usb_pipeendpoint(urb->pipe);
+
+	if (usb_pipein(urb->pipe))
+		return dev->ep_in[ep_num];
+	else
+		return dev->ep_out[ep_num];
+}
+
+static int _disconnect(dwc_otg_hcd_t * hcd)
+{
+	struct usb_hcd *usb_hcd = dwc_otg_hcd_to_hcd(hcd);
+
+	usb_hcd->self.is_b_host = 0;
+	return 0;
+}
+
+static int _start(dwc_otg_hcd_t * hcd)
+{
+	struct usb_hcd *usb_hcd = dwc_otg_hcd_to_hcd(hcd);
+
+	usb_hcd->self.is_b_host = dwc_otg_hcd_is_b_host(hcd);
+	hcd_start(usb_hcd);
+
+	return 0;
+}
+
+static int _hub_info(dwc_otg_hcd_t * hcd, void *urb_handle, uint32_t * hub_addr,
+		     uint32_t * port_addr)
+{
+   struct urb *urb = (struct urb *)urb_handle;
+   struct usb_bus *bus;
+#if 1 //GRAYG - temporary
+   if (NULL == urb_handle)
+      DWC_ERROR("**** %s - NULL URB handle\n", __func__);//GRAYG
+   if (NULL == urb->dev)
+      DWC_ERROR("**** %s - URB has no device\n", __func__);//GRAYG
+   if (NULL == port_addr)
+      DWC_ERROR("**** %s - NULL port_address\n", __func__);//GRAYG
+#endif
+   if (urb->dev->tt) {
+        if (NULL == urb->dev->tt->hub) {
+                DWC_ERROR("**** %s - (URB's transactor has no TT - giving no hub)\n",
+                           __func__); //GRAYG
+                //*hub_addr = (u8)usb_pipedevice(urb->pipe); //GRAYG
+                *hub_addr = 0; //GRAYG
+                // we probably shouldn't have a transaction translator if
+                // there's no associated hub?
+        } else {
+		bus = hcd_to_bus(dwc_otg_hcd_to_hcd(hcd));
+		if (urb->dev->tt->hub == bus->root_hub)
+			*hub_addr = 0;
+		else
+			*hub_addr = urb->dev->tt->hub->devnum;
+	}
+	*port_addr = urb->dev->tt->multi ? urb->dev->ttport : 1;
+   } else {
+        *hub_addr = 0;
+	*port_addr = urb->dev->ttport;
+   }
+   return 0;
+}
+
+static int _speed(dwc_otg_hcd_t * hcd, void *urb_handle)
+{
+	struct urb *urb = (struct urb *)urb_handle;
+	return urb->dev->speed;
+}
+
+static int _get_b_hnp_enable(dwc_otg_hcd_t * hcd)
+{
+	struct usb_hcd *usb_hcd = dwc_otg_hcd_to_hcd(hcd);
+	return usb_hcd->self.b_hnp_enable;
+}
+
+static void allocate_bus_bandwidth(struct usb_hcd *hcd, uint32_t bw,
+				   struct urb *urb)
+{
+	hcd_to_bus(hcd)->bandwidth_allocated += bw / urb->interval;
+	if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+		hcd_to_bus(hcd)->bandwidth_isoc_reqs++;
+	} else {
+		hcd_to_bus(hcd)->bandwidth_int_reqs++;
+	}
+}
+
+static void free_bus_bandwidth(struct usb_hcd *hcd, uint32_t bw,
+			       struct urb *urb)
+{
+	hcd_to_bus(hcd)->bandwidth_allocated -= bw / urb->interval;
+	if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+		hcd_to_bus(hcd)->bandwidth_isoc_reqs--;
+	} else {
+		hcd_to_bus(hcd)->bandwidth_int_reqs--;
+	}
+}
+
+/**
+ * Sets the final status of an URB and returns it to the device driver. Any
+ * required cleanup of the URB is performed.  The HCD lock should be held on
+ * entry.
+ */
+static int _complete(dwc_otg_hcd_t * hcd, void *urb_handle,
+		     dwc_otg_hcd_urb_t * dwc_otg_urb, int32_t status)
+{
+	struct urb *urb = (struct urb *)urb_handle;
+	urb_tq_entry_t *new_entry;
+	int rc = 0;
+	if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+		DWC_PRINTF("%s: urb %p, device %d, ep %d %s, status=%d\n",
+			   __func__, urb, usb_pipedevice(urb->pipe),
+			   usb_pipeendpoint(urb->pipe),
+			   usb_pipein(urb->pipe) ? "IN" : "OUT", status);
+		if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+			int i;
+			for (i = 0; i < urb->number_of_packets; i++) {
+				DWC_PRINTF("  ISO Desc %d status: %d\n",
+					   i, urb->iso_frame_desc[i].status);
+			}
+		}
+	}
+	new_entry = DWC_ALLOC_ATOMIC(sizeof(urb_tq_entry_t));
+	urb->actual_length = dwc_otg_hcd_urb_get_actual_length(dwc_otg_urb);
+	/* Convert status value. */
+	switch (status) {
+	case -DWC_E_PROTOCOL:
+		status = -EPROTO;
+		break;
+	case -DWC_E_IN_PROGRESS:
+		status = -EINPROGRESS;
+		break;
+	case -DWC_E_PIPE:
+		status = -EPIPE;
+		break;
+	case -DWC_E_IO:
+		status = -EIO;
+		break;
+	case -DWC_E_TIMEOUT:
+		status = -ETIMEDOUT;
+		break;
+	case -DWC_E_OVERFLOW:
+		status = -EOVERFLOW;
+		break;
+	case -DWC_E_SHUTDOWN:
+		status = -ESHUTDOWN;
+		break;
+	default:
+		if (status) {
+			DWC_PRINTF("Uknown urb status %d\n", status);
+
+		}
+	}
+
+	if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+		int i;
+
+		urb->error_count = dwc_otg_hcd_urb_get_error_count(dwc_otg_urb);
+		for (i = 0; i < urb->number_of_packets; ++i) {
+			urb->iso_frame_desc[i].actual_length =
+			    dwc_otg_hcd_urb_get_iso_desc_actual_length
+			    (dwc_otg_urb, i);
+			urb->iso_frame_desc[i].status =
+			    dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_urb, i);
+		}
+	}
+
+	urb->status = status;
+	urb->hcpriv = NULL;
+	if (!status) {
+		if ((urb->transfer_flags & URB_SHORT_NOT_OK) &&
+		    (urb->actual_length < urb->transfer_buffer_length)) {
+			urb->status = -EREMOTEIO;
+		}
+	}
+
+	if ((usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) ||
+	    (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) {
+		struct usb_host_endpoint *ep = dwc_urb_to_endpoint(urb);
+		if (ep) {
+			free_bus_bandwidth(dwc_otg_hcd_to_hcd(hcd),
+					   dwc_otg_hcd_get_ep_bandwidth(hcd,
+									ep->hcpriv),
+					   urb);
+		}
+	}
+	DWC_FREE(dwc_otg_urb);
+	if (!new_entry) {
+		DWC_ERROR("dwc_otg_hcd: complete: cannot allocate URB TQ entry\n");
+		urb->status = -EPROTO;
+		/* don't schedule the tasklet -
+		 * directly return the packet here with error. */
+#if USB_URB_EP_LINKING
+		usb_hcd_unlink_urb_from_ep(dwc_otg_hcd_to_hcd(hcd), urb);
+#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+		usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb);
+#else
+		usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb, urb->status);
+#endif
+	} else {
+		new_entry->urb = urb;
+#if USB_URB_EP_LINKING
+		rc = usb_hcd_check_unlink_urb(dwc_otg_hcd_to_hcd(hcd), urb, urb->status);
+		if(0 == rc) {
+			usb_hcd_unlink_urb_from_ep(dwc_otg_hcd_to_hcd(hcd), urb);
+		}
+#endif
+		if(0 == rc) {
+			DWC_TAILQ_INSERT_TAIL(&hcd->completed_urb_list, new_entry,
+						urb_tq_entries);
+			DWC_TASK_HI_SCHEDULE(hcd->completion_tasklet);
+		}
+	}
+	return 0;
+}
+
+static struct dwc_otg_hcd_function_ops hcd_fops = {
+	.start = _start,
+	.disconnect = _disconnect,
+	.hub_info = _hub_info,
+	.speed = _speed,
+	.complete = _complete,
+	.get_b_hnp_enable = _get_b_hnp_enable,
+};
+
+static struct fiq_handler fh = {
+  .name = "usb_fiq",
+};
+
+static void hcd_init_fiq(void *cookie)
+{
+	dwc_otg_device_t *otg_dev = cookie;
+	dwc_otg_hcd_t *dwc_otg_hcd = otg_dev->hcd;
+	struct pt_regs regs;
+
+	if (claim_fiq(&fh)) {
+		DWC_ERROR("Can't claim FIQ");
+		BUG();
+	}
+	DWC_WARN("FIQ on core %d at 0x%08x",
+				smp_processor_id(),
+				(fiq_fsm_enable ? (int)&dwc_otg_fiq_fsm : (int)&dwc_otg_fiq_nop));
+	DWC_WARN("FIQ ASM at 0x%08x length %d", (int)&_dwc_otg_fiq_stub, (int)(&_dwc_otg_fiq_stub_end - &_dwc_otg_fiq_stub));
+		set_fiq_handler((void *) &_dwc_otg_fiq_stub, &_dwc_otg_fiq_stub_end - &_dwc_otg_fiq_stub);
+	memset(&regs,0,sizeof(regs));
+
+	regs.ARM_r8 = (long) dwc_otg_hcd->fiq_state;
+	if (fiq_fsm_enable) {
+		regs.ARM_r9 = dwc_otg_hcd->core_if->core_params->host_channels;
+		//regs.ARM_r10 = dwc_otg_hcd->dma;
+		regs.ARM_fp = (long) dwc_otg_fiq_fsm;
+	} else {
+		regs.ARM_fp = (long) dwc_otg_fiq_nop;
+	}
+
+	regs.ARM_sp = (long) dwc_otg_hcd->fiq_stack + (sizeof(struct fiq_stack) - 4);
+
+//		__show_regs(&regs);
+	set_fiq_regs(&regs);
+
+	//Set the mphi periph to  the required registers
+	dwc_otg_hcd->fiq_state->mphi_regs.base    = otg_dev->os_dep.mphi_base;
+	dwc_otg_hcd->fiq_state->mphi_regs.ctrl    = otg_dev->os_dep.mphi_base + 0x4c;
+	dwc_otg_hcd->fiq_state->mphi_regs.outdda  = otg_dev->os_dep.mphi_base + 0x28;
+	dwc_otg_hcd->fiq_state->mphi_regs.outddb  = otg_dev->os_dep.mphi_base + 0x2c;
+	dwc_otg_hcd->fiq_state->mphi_regs.intstat = otg_dev->os_dep.mphi_base + 0x50;
+	dwc_otg_hcd->fiq_state->dwc_regs_base = otg_dev->os_dep.base;
+	DWC_WARN("MPHI regs_base at 0x%08x", (int)dwc_otg_hcd->fiq_state->mphi_regs.base);
+	//Enable mphi peripheral
+	writel((1<<31),dwc_otg_hcd->fiq_state->mphi_regs.ctrl);
+#ifdef DEBUG
+	if (readl(dwc_otg_hcd->fiq_state->mphi_regs.ctrl) & 0x80000000)
+		DWC_WARN("MPHI periph has been enabled");
+	else
+		DWC_WARN("MPHI periph has NOT been enabled");
+#endif
+	// Enable FIQ interrupt from USB peripheral
+	enable_fiq(INTERRUPT_VC_USB);
+	local_fiq_enable();
+}
+
+/**
+ * Initializes the HCD. This function allocates memory for and initializes the
+ * static parts of the usb_hcd and dwc_otg_hcd structures. It also registers the
+ * USB bus with the core and calls the hc_driver->start() function. It returns
+ * a negative error on failure.
+ */
+int hcd_init(dwc_bus_dev_t *_dev)
+{
+	struct usb_hcd *hcd = NULL;
+	dwc_otg_hcd_t *dwc_otg_hcd = NULL;
+	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+	int retval = 0;
+        u64 dmamask;
+
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD INIT otg_dev=%p\n", otg_dev);
+
+	/* Set device flags indicating whether the HCD supports DMA. */
+	if (dwc_otg_is_dma_enable(otg_dev->core_if))
+                dmamask = DMA_BIT_MASK(32);
+        else
+                dmamask = 0;
+
+#if    defined(LM_INTERFACE) || defined(PLATFORM_INTERFACE)
+        dma_set_mask(&_dev->dev, dmamask);
+        dma_set_coherent_mask(&_dev->dev, dmamask);
+#elif  defined(PCI_INTERFACE)
+        pci_set_dma_mask(_dev, dmamask);
+        pci_set_consistent_dma_mask(_dev, dmamask);
+#endif
+
+	/*
+	 * Allocate memory for the base HCD plus the DWC OTG HCD.
+	 * Initialize the base HCD.
+	 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+	hcd = usb_create_hcd(&dwc_otg_hc_driver, &_dev->dev, _dev->dev.bus_id);
+#else
+	hcd = usb_create_hcd(&dwc_otg_hc_driver, &_dev->dev, dev_name(&_dev->dev));
+	hcd->has_tt = 1;
+//      hcd->uses_new_polling = 1;
+//      hcd->poll_rh = 0;
+#endif
+	if (!hcd) {
+		retval = -ENOMEM;
+		goto error1;
+	}
+
+	hcd->regs = otg_dev->os_dep.base;
+
+
+	/* Initialize the DWC OTG HCD. */
+	dwc_otg_hcd = dwc_otg_hcd_alloc_hcd();
+	if (!dwc_otg_hcd) {
+		goto error2;
+	}
+	((struct wrapper_priv_data *)(hcd->hcd_priv))->dwc_otg_hcd =
+	    dwc_otg_hcd;
+	otg_dev->hcd = dwc_otg_hcd;
+
+	if (dwc_otg_hcd_init(dwc_otg_hcd, otg_dev->core_if)) {
+		goto error2;
+	}
+
+	if (fiq_enable) {
+		if (num_online_cpus() > 1) {
+			/* bcm2709: can run the FIQ on a separate core to IRQs */
+			smp_call_function_single(1, hcd_init_fiq, otg_dev, 1);
+		} else {
+			smp_call_function_single(0, hcd_init_fiq, otg_dev, 1);
+		}
+	}
+
+	otg_dev->hcd->otg_dev = otg_dev;
+	hcd->self.otg_port = dwc_otg_hcd_otg_port(dwc_otg_hcd);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33) //don't support for LM(with 2.6.20.1 kernel)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35) //version field absent later
+	hcd->self.otg_version = dwc_otg_get_otg_version(otg_dev->core_if);
+#endif
+	/* Don't support SG list at this point */
+	hcd->self.sg_tablesize = 0;
+#endif
+	/*
+	 * Finish generic HCD initialization and start the HCD. This function
+	 * allocates the DMA buffer pool, registers the USB bus, requests the
+	 * IRQ line, and calls hcd_start method.
+	 */
+#ifdef PLATFORM_INTERFACE
+	retval = usb_add_hcd(hcd, platform_get_irq(_dev, fiq_enable ? 0 : 1), IRQF_SHARED | IRQF_DISABLED);
+#else
+	retval = usb_add_hcd(hcd, _dev->irq, IRQF_SHARED | IRQF_DISABLED);	
+#endif
+	if (retval < 0) {
+		goto error2;
+	}
+
+	dwc_otg_hcd_set_priv_data(dwc_otg_hcd, hcd);
+	return 0;
+
+error2:
+	usb_put_hcd(hcd);
+error1:
+	return retval;
+}
+
+/**
+ * Removes the HCD.
+ * Frees memory and resources associated with the HCD and deregisters the bus.
+ */
+void hcd_remove(dwc_bus_dev_t *_dev)
+{
+	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+	dwc_otg_hcd_t *dwc_otg_hcd;
+	struct usb_hcd *hcd;
+
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD REMOVE otg_dev=%p\n", otg_dev);
+
+	if (!otg_dev) {
+		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev NULL!\n", __func__);
+		return;
+	}
+
+	dwc_otg_hcd = otg_dev->hcd;
+
+	if (!dwc_otg_hcd) {
+		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->hcd NULL!\n", __func__);
+		return;
+	}
+
+	hcd = dwc_otg_hcd_to_hcd(dwc_otg_hcd);
+
+	if (!hcd) {
+		DWC_DEBUGPL(DBG_ANY,
+			    "%s: dwc_otg_hcd_to_hcd(dwc_otg_hcd) NULL!\n",
+			    __func__);
+		return;
+	}
+	usb_remove_hcd(hcd);
+	dwc_otg_hcd_set_priv_data(dwc_otg_hcd, NULL);
+	dwc_otg_hcd_remove(dwc_otg_hcd);
+	usb_put_hcd(hcd);
+}
+
+/* =========================================================================
+ *  Linux HC Driver Functions
+ * ========================================================================= */
+
+/** Initializes the DWC_otg controller and its root hub and prepares it for host
+ * mode operation. Activates the root port. Returns 0 on success and a negative
+ * error code on failure. */
+int hcd_start(struct usb_hcd *hcd)
+{
+	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+	struct usb_bus *bus;
+
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD START\n");
+	bus = hcd_to_bus(hcd);
+
+	hcd->state = HC_STATE_RUNNING;
+	if (dwc_otg_hcd_start(dwc_otg_hcd, &hcd_fops)) {
+		return 0;
+	}
+
+	/* Initialize and connect root hub if one is not already attached */
+	if (bus->root_hub) {
+		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Has Root Hub\n");
+		/* Inform the HUB driver to resume. */
+		usb_hcd_resume_root_hub(hcd);
+	}
+
+	return 0;
+}
+
+/**
+ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
+ * stopped.
+ */
+void hcd_stop(struct usb_hcd *hcd)
+{
+	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+	dwc_otg_hcd_stop(dwc_otg_hcd);
+}
+
+/** Returns the current frame number. */
+static int get_frame_number(struct usb_hcd *hcd)
+{
+	hprt0_data_t hprt0;
+	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+	hprt0.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
+	if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED)
+		return dwc_otg_hcd_get_frame_number(dwc_otg_hcd) >> 3;
+	else
+		return dwc_otg_hcd_get_frame_number(dwc_otg_hcd);
+}
+
+#ifdef DEBUG
+static void dump_urb_info(struct urb *urb, char *fn_name)
+{
+	DWC_PRINTF("%s, urb %p\n", fn_name, urb);
+	DWC_PRINTF("  Device address: %d\n", usb_pipedevice(urb->pipe));
+	DWC_PRINTF("  Endpoint: %d, %s\n", usb_pipeendpoint(urb->pipe),
+		   (usb_pipein(urb->pipe) ? "IN" : "OUT"));
+	DWC_PRINTF("  Endpoint type: %s\n", ( {
+					     char *pipetype;
+					     switch (usb_pipetype(urb->pipe)) {
+case PIPE_CONTROL:
+pipetype = "CONTROL"; break; case PIPE_BULK:
+pipetype = "BULK"; break; case PIPE_INTERRUPT:
+pipetype = "INTERRUPT"; break; case PIPE_ISOCHRONOUS:
+pipetype = "ISOCHRONOUS"; break; default:
+					     pipetype = "UNKNOWN"; break;};
+					     pipetype;}
+		   )) ;
+	DWC_PRINTF("  Speed: %s\n", ( {
+				     char *speed; switch (urb->dev->speed) {
+case USB_SPEED_HIGH:
+speed = "HIGH"; break; case USB_SPEED_FULL:
+speed = "FULL"; break; case USB_SPEED_LOW:
+speed = "LOW"; break; default:
+				     speed = "UNKNOWN"; break;};
+				     speed;}
+		   )) ;
+	DWC_PRINTF("  Max packet size: %d\n",
+		   usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)));
+	DWC_PRINTF("  Data buffer length: %d\n", urb->transfer_buffer_length);
+	DWC_PRINTF("  Transfer buffer: %p, Transfer DMA: %p\n",
+		   urb->transfer_buffer, (void *)urb->transfer_dma);
+	DWC_PRINTF("  Setup buffer: %p, Setup DMA: %p\n",
+		   urb->setup_packet, (void *)urb->setup_dma);
+	DWC_PRINTF("  Interval: %d\n", urb->interval);
+	if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+		int i;
+		for (i = 0; i < urb->number_of_packets; i++) {
+			DWC_PRINTF("  ISO Desc %d:\n", i);
+			DWC_PRINTF("    offset: %d, length %d\n",
+				   urb->iso_frame_desc[i].offset,
+				   urb->iso_frame_desc[i].length);
+		}
+	}
+}
+#endif
+
+/** Starts processing a USB transfer request specified by a USB Request Block
+ * (URB). mem_flags indicates the type of memory allocation to use while
+ * processing this URB. */
+static int dwc_otg_urb_enqueue(struct usb_hcd *hcd,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+		       struct usb_host_endpoint *ep,
+#endif
+		       struct urb *urb, gfp_t mem_flags)
+{
+	int retval = 0;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
+	struct usb_host_endpoint *ep = urb->ep;
+#endif
+	dwc_irqflags_t irqflags;
+        void **ref_ep_hcpriv = &ep->hcpriv;
+	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+	dwc_otg_hcd_urb_t *dwc_otg_urb;
+	int i;
+	int alloc_bandwidth = 0;
+	uint8_t ep_type = 0;
+	uint32_t flags = 0;
+	void *buf;
+
+#ifdef DEBUG
+	if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+		dump_urb_info(urb, "dwc_otg_urb_enqueue");
+	}
+#endif
+
+	if (!urb->transfer_buffer && urb->transfer_buffer_length)
+		return -EINVAL;
+
+	if ((usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)
+	    || (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) {
+		if (!dwc_otg_hcd_is_bandwidth_allocated
+		    (dwc_otg_hcd, ref_ep_hcpriv)) {
+			alloc_bandwidth = 1;
+		}
+	}
+
+	switch (usb_pipetype(urb->pipe)) {
+	case PIPE_CONTROL:
+		ep_type = USB_ENDPOINT_XFER_CONTROL;
+		break;
+	case PIPE_ISOCHRONOUS:
+		ep_type = USB_ENDPOINT_XFER_ISOC;
+		break;
+	case PIPE_BULK:
+		ep_type = USB_ENDPOINT_XFER_BULK;
+		break;
+	case PIPE_INTERRUPT:
+		ep_type = USB_ENDPOINT_XFER_INT;
+		break;
+	default:
+                DWC_WARN("Wrong EP type - %d\n", usb_pipetype(urb->pipe));
+	}
+
+        /* # of packets is often 0 - do we really need to call this then? */
+	dwc_otg_urb = dwc_otg_hcd_urb_alloc(dwc_otg_hcd,
+					    urb->number_of_packets,
+					    mem_flags == GFP_ATOMIC ? 1 : 0);
+
+	if(dwc_otg_urb == NULL)
+		return -ENOMEM;
+
+	if (!dwc_otg_urb && urb->number_of_packets)
+		return -ENOMEM;
+
+	dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_urb, usb_pipedevice(urb->pipe),
+				     usb_pipeendpoint(urb->pipe), ep_type,
+				     usb_pipein(urb->pipe),
+				     usb_maxpacket(urb->dev, urb->pipe,
+						   !(usb_pipein(urb->pipe))));
+
+	buf = urb->transfer_buffer;
+	if (hcd->self.uses_dma) {
+		/*
+		 * Calculate virtual address from physical address,
+		 * because some class driver may not fill transfer_buffer.
+		 * In Buffer DMA mode virual address is used,
+		 * when handling non DWORD aligned buffers.
+		 */
+		//buf = phys_to_virt(urb->transfer_dma);
+                // DMA addresses are bus addresses not physical addresses!
+                buf = dma_to_virt(&urb->dev->dev, urb->transfer_dma);
+	}
+
+	if (!(urb->transfer_flags & URB_NO_INTERRUPT))
+		flags |= URB_GIVEBACK_ASAP;
+	if (urb->transfer_flags & URB_ZERO_PACKET)
+		flags |= URB_SEND_ZERO_PACKET;
+
+	dwc_otg_hcd_urb_set_params(dwc_otg_urb, urb, buf,
+				   urb->transfer_dma,
+				   urb->transfer_buffer_length,
+				   urb->setup_packet,
+				   urb->setup_dma, flags, urb->interval);
+
+	for (i = 0; i < urb->number_of_packets; ++i) {
+		dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_urb, i,
+						    urb->
+						    iso_frame_desc[i].offset,
+						    urb->
+						    iso_frame_desc[i].length);
+	}
+
+	DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &irqflags);
+	urb->hcpriv = dwc_otg_urb;
+#if USB_URB_EP_LINKING
+	retval = usb_hcd_link_urb_to_ep(hcd, urb);
+	if (0 == retval)
+#endif
+	{
+		retval = dwc_otg_hcd_urb_enqueue(dwc_otg_hcd, dwc_otg_urb,
+						/*(dwc_otg_qh_t **)*/
+						ref_ep_hcpriv, 1);
+		if (0 == retval) {
+			if (alloc_bandwidth) {
+				allocate_bus_bandwidth(hcd,
+						dwc_otg_hcd_get_ep_bandwidth(
+							dwc_otg_hcd, *ref_ep_hcpriv),
+						urb);
+			}
+		} else {
+			DWC_DEBUGPL(DBG_HCD, "DWC OTG dwc_otg_hcd_urb_enqueue failed rc %d\n", retval);
+#if USB_URB_EP_LINKING
+			usb_hcd_unlink_urb_from_ep(hcd, urb);
+#endif
+			DWC_FREE(dwc_otg_urb);
+			urb->hcpriv = NULL;
+			if (retval == -DWC_E_NO_DEVICE)
+				retval = -ENODEV;
+		}
+	}
+#if USB_URB_EP_LINKING
+	else
+	{
+		DWC_FREE(dwc_otg_urb);
+		urb->hcpriv = NULL;
+	}
+#endif
+	DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, irqflags);
+	return retval;
+}
+
+/** Aborts/cancels a USB transfer request. Always returns 0 to indicate
+ * success.  */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+static int dwc_otg_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
+#else
+static int dwc_otg_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+#endif
+{
+	dwc_irqflags_t flags;
+	dwc_otg_hcd_t *dwc_otg_hcd;
+        int rc;
+
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue\n");
+
+	dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+#ifdef DEBUG
+	if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+		dump_urb_info(urb, "dwc_otg_urb_dequeue");
+	}
+#endif
+
+	DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
+	rc = usb_hcd_check_unlink_urb(hcd, urb, status);
+	if (0 == rc) {
+		if(urb->hcpriv != NULL) {
+	                dwc_otg_hcd_urb_dequeue(dwc_otg_hcd,
+	                                    (dwc_otg_hcd_urb_t *)urb->hcpriv);
+
+		        DWC_FREE(urb->hcpriv);
+			urb->hcpriv = NULL;
+		}
+        }
+
+        if (0 == rc) {
+		/* Higher layer software sets URB status. */
+#if USB_URB_EP_LINKING
+                usb_hcd_unlink_urb_from_ep(hcd, urb);
+#endif
+		DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
+
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+                usb_hcd_giveback_urb(hcd, urb);
+#else
+                usb_hcd_giveback_urb(hcd, urb, status);
+#endif
+                if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+                        DWC_PRINTF("Called usb_hcd_giveback_urb() \n");
+                        DWC_PRINTF("  1urb->status = %d\n", urb->status);
+                }
+                DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue OK\n");
+        } else {
+		DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
+                DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue failed - rc %d\n",
+                            rc);
+        }
+
+	return rc;
+}
+
+/* Frees resources in the DWC_otg controller related to a given endpoint. Also
+ * clears state in the HCD related to the endpoint. Any URBs for the endpoint
+ * must already be dequeued. */
+static void endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+{
+	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+	DWC_DEBUGPL(DBG_HCD,
+		    "DWC OTG HCD EP DISABLE: _bEndpointAddress=0x%02x, "
+		    "endpoint=%d\n", ep->desc.bEndpointAddress,
+		    dwc_ep_addr_to_endpoint(ep->desc.bEndpointAddress));
+	dwc_otg_hcd_endpoint_disable(dwc_otg_hcd, ep->hcpriv, 250);
+	ep->hcpriv = NULL;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
+/* Resets endpoint specific parameter values, in current version used to reset
+ * the data toggle(as a WA). This function can be called from usb_clear_halt routine */
+static void endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+{
+	dwc_irqflags_t flags;
+	struct usb_device *udev = NULL;
+	int epnum = usb_endpoint_num(&ep->desc);
+	int is_out = usb_endpoint_dir_out(&ep->desc);
+	int is_control = usb_endpoint_xfer_control(&ep->desc);
+	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+        struct device *dev = DWC_OTG_OS_GETDEV(dwc_otg_hcd->otg_dev->os_dep);
+
+	if (dev)
+		udev = to_usb_device(dev);
+	else
+		return;
+
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD EP RESET: Endpoint Num=0x%02d\n", epnum);
+
+	DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
+	usb_settoggle(udev, epnum, is_out, 0);
+	if (is_control)
+		usb_settoggle(udev, epnum, !is_out, 0);
+
+	if (ep->hcpriv) {
+		dwc_otg_hcd_endpoint_reset(dwc_otg_hcd, ep->hcpriv);
+	}
+	DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
+}
+#endif
+
+/** Handles host mode interrupts for the DWC_otg controller. Returns IRQ_NONE if
+ * there was no interrupt to handle. Returns IRQ_HANDLED if there was a valid
+ * interrupt.
+ *
+ * This function is called by the USB core when an interrupt occurs */
+static irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd)
+{
+	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+	int32_t retval = dwc_otg_hcd_handle_intr(dwc_otg_hcd);
+	if (retval != 0) {
+		S3C2410X_CLEAR_EINTPEND();
+	}
+	return IRQ_RETVAL(retval);
+}
+
+/** Creates Status Change bitmap for the root hub and root port. The bitmap is
+ * returned in buf. Bit 0 is the status change indicator for the root hub. Bit 1
+ * is the status change indicator for the single root port. Returns 1 if either
+ * change indicator is 1, otherwise returns 0. */
+int hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+	buf[0] = 0;
+	buf[0] |= (dwc_otg_hcd_is_status_changed(dwc_otg_hcd, 1)) << 1;
+
+	return (buf[0] != 0);
+}
+
+/** Handles hub class-specific requests. */
+int hub_control(struct usb_hcd *hcd,
+		u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength)
+{
+	int retval;
+
+	retval = dwc_otg_hcd_hub_control(hcd_to_dwc_otg_hcd(hcd),
+					 typeReq, wValue, wIndex, buf, wLength);
+
+	switch (retval) {
+	case -DWC_E_INVALID:
+		retval = -EINVAL;
+		break;
+	}
+
+	return retval;
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,957 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_queue.c $
+ * $Revision: #44 $
+ * $Date: 2011/10/26 $
+ * $Change: 1873028 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/**
+ * @file
+ *
+ * This file contains the functions to manage Queue Heads and Queue
+ * Transfer Descriptors.
+ */
+
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+extern bool microframe_schedule;
+
+/**
+ * Free each QTD in the QH's QTD-list then free the QH.  QH should already be
+ * removed from a list.  QTD list should already be empty if called from URB
+ * Dequeue.
+ *
+ * @param hcd HCD instance.
+ * @param qh The QH to free.
+ */
+void dwc_otg_hcd_qh_free(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	dwc_otg_qtd_t *qtd, *qtd_tmp;
+	dwc_irqflags_t flags;
+
+	/* Free each QTD in the QTD list */
+	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+	DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &qh->qtd_list, qtd_list_entry) {
+		DWC_CIRCLEQ_REMOVE(&qh->qtd_list, qtd, qtd_list_entry);
+		dwc_otg_hcd_qtd_free(qtd);
+	}
+
+	if (hcd->core_if->dma_desc_enable) {
+		dwc_otg_hcd_qh_free_ddma(hcd, qh);
+	} else if (qh->dw_align_buf) {
+		uint32_t buf_size;
+		if (qh->ep_type == UE_ISOCHRONOUS) {
+			buf_size = 4096;
+		} else {
+			buf_size = hcd->core_if->core_params->max_transfer_size;
+		}
+		DWC_DMA_FREE(buf_size, qh->dw_align_buf, qh->dw_align_buf_dma);
+	}
+
+	DWC_FREE(qh);
+	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
+	return;
+}
+
+#define BitStuffTime(bytecount)  ((8 * 7* bytecount) / 6)
+#define HS_HOST_DELAY		5	/* nanoseconds */
+#define FS_LS_HOST_DELAY	1000	/* nanoseconds */
+#define HUB_LS_SETUP		333	/* nanoseconds */
+#define NS_TO_US(ns)		((ns + 500) / 1000)
+				/* convert & round nanoseconds to microseconds */
+
+static uint32_t calc_bus_time(int speed, int is_in, int is_isoc, int bytecount)
+{
+	unsigned long retval;
+
+	switch (speed) {
+	case USB_SPEED_HIGH:
+		if (is_isoc) {
+			retval =
+			    ((38 * 8 * 2083) +
+			     (2083 * (3 + BitStuffTime(bytecount)))) / 1000 +
+			    HS_HOST_DELAY;
+		} else {
+			retval =
+			    ((55 * 8 * 2083) +
+			     (2083 * (3 + BitStuffTime(bytecount)))) / 1000 +
+			    HS_HOST_DELAY;
+		}
+		break;
+	case USB_SPEED_FULL:
+		if (is_isoc) {
+			retval =
+			    (8354 * (31 + 10 * BitStuffTime(bytecount))) / 1000;
+			if (is_in) {
+				retval = 7268 + FS_LS_HOST_DELAY + retval;
+			} else {
+				retval = 6265 + FS_LS_HOST_DELAY + retval;
+			}
+		} else {
+			retval =
+			    (8354 * (31 + 10 * BitStuffTime(bytecount))) / 1000;
+			retval = 9107 + FS_LS_HOST_DELAY + retval;
+		}
+		break;
+	case USB_SPEED_LOW:
+		if (is_in) {
+			retval =
+			    (67667 * (31 + 10 * BitStuffTime(bytecount))) /
+			    1000;
+			retval =
+			    64060 + (2 * HUB_LS_SETUP) + FS_LS_HOST_DELAY +
+			    retval;
+		} else {
+			retval =
+			    (66700 * (31 + 10 * BitStuffTime(bytecount))) /
+			    1000;
+			retval =
+			    64107 + (2 * HUB_LS_SETUP) + FS_LS_HOST_DELAY +
+			    retval;
+		}
+		break;
+	default:
+		DWC_WARN("Unknown device speed\n");
+		retval = -1;
+	}
+
+	return NS_TO_US(retval);
+}
+
+/**
+ * Initializes a QH structure.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh  The QH to init.
+ * @param urb Holds the information about the device/endpoint that we need
+ * 	      to initialize the QH.
+ */
+#define SCHEDULE_SLOP 10
+void qh_init(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, dwc_otg_hcd_urb_t * urb)
+{
+	char *speed, *type;
+	int dev_speed;
+	uint32_t hub_addr, hub_port;
+
+	dwc_memset(qh, 0, sizeof(dwc_otg_qh_t));
+
+	/* Initialize QH */
+	qh->ep_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
+	qh->ep_is_in = dwc_otg_hcd_is_pipe_in(&urb->pipe_info) ? 1 : 0;
+
+	qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+	qh->maxp = dwc_otg_hcd_get_mps(&urb->pipe_info);
+	DWC_CIRCLEQ_INIT(&qh->qtd_list);
+	DWC_LIST_INIT(&qh->qh_list_entry);
+	qh->channel = NULL;
+
+	/* FS/LS Enpoint on HS Hub
+	 * NOT virtual root hub */
+	dev_speed = hcd->fops->speed(hcd, urb->priv);
+
+	hcd->fops->hub_info(hcd, urb->priv, &hub_addr, &hub_port);
+	qh->do_split = 0;
+	if (microframe_schedule)
+		qh->speed = dev_speed;
+
+	qh->nak_frame = 0xffff;
+
+	if (((dev_speed == USB_SPEED_LOW) ||
+	     (dev_speed == USB_SPEED_FULL)) &&
+	    (hub_addr != 0 && hub_addr != 1)) {
+		DWC_DEBUGPL(DBG_HCD,
+			    "QH init: EP %d: TT found at hub addr %d, for port %d\n",
+			    dwc_otg_hcd_get_ep_num(&urb->pipe_info), hub_addr,
+			    hub_port);
+		qh->do_split = 1;
+		qh->skip_count = 0;
+	}
+
+	if (qh->ep_type == UE_INTERRUPT || qh->ep_type == UE_ISOCHRONOUS) {
+		/* Compute scheduling parameters once and save them. */
+		hprt0_data_t hprt;
+
+		/** @todo Account for split transfers in the bus time. */
+		int bytecount =
+		    dwc_hb_mult(qh->maxp) * dwc_max_packet(qh->maxp);
+
+		qh->usecs =
+		    calc_bus_time((qh->do_split ? USB_SPEED_HIGH : dev_speed),
+				  qh->ep_is_in, (qh->ep_type == UE_ISOCHRONOUS),
+				  bytecount);
+		/* Start in a slightly future (micro)frame. */
+		qh->sched_frame = dwc_frame_num_inc(hcd->frame_number,
+						    SCHEDULE_SLOP);
+		qh->interval = urb->interval;
+
+#if 0
+		/* Increase interrupt polling rate for debugging. */
+		if (qh->ep_type == UE_INTERRUPT) {
+			qh->interval = 8;
+		}
+#endif
+		hprt.d32 = DWC_READ_REG32(hcd->core_if->host_if->hprt0);
+		if ((hprt.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED) &&
+		    ((dev_speed == USB_SPEED_LOW) ||
+		     (dev_speed == USB_SPEED_FULL))) {
+			qh->interval *= 8;
+			qh->sched_frame |= 0x7;
+			qh->start_split_frame = qh->sched_frame;
+		}
+
+	}
+
+	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD QH Initialized\n");
+	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - qh = %p\n", qh);
+	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Device Address = %d\n",
+		    dwc_otg_hcd_get_dev_addr(&urb->pipe_info));
+	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Endpoint %d, %s\n",
+		    dwc_otg_hcd_get_ep_num(&urb->pipe_info),
+		    dwc_otg_hcd_is_pipe_in(&urb->pipe_info) ? "IN" : "OUT");
+	switch (dev_speed) {
+	case USB_SPEED_LOW:
+		qh->dev_speed = DWC_OTG_EP_SPEED_LOW;
+		speed = "low";
+		break;
+	case USB_SPEED_FULL:
+		qh->dev_speed = DWC_OTG_EP_SPEED_FULL;
+		speed = "full";
+		break;
+	case USB_SPEED_HIGH:
+		qh->dev_speed = DWC_OTG_EP_SPEED_HIGH;
+		speed = "high";
+		break;
+	default:
+		speed = "?";
+		break;
+	}
+	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Speed = %s\n", speed);
+
+	switch (qh->ep_type) {
+	case UE_ISOCHRONOUS:
+		type = "isochronous";
+		break;
+	case UE_INTERRUPT:
+		type = "interrupt";
+		break;
+	case UE_CONTROL:
+		type = "control";
+		break;
+	case UE_BULK:
+		type = "bulk";
+		break;
+	default:
+		type = "?";
+		break;
+	}
+
+	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Type = %s\n", type);
+
+#ifdef DEBUG
+	if (qh->ep_type == UE_INTERRUPT) {
+		DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - usecs = %d\n",
+			    qh->usecs);
+		DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - interval = %d\n",
+			    qh->interval);
+	}
+#endif
+
+}
+
+/**
+ * This function allocates and initializes a QH.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param urb Holds the information about the device/endpoint that we need
+ * 	      to initialize the QH.
+ * @param atomic_alloc Flag to do atomic allocation if needed
+ *
+ * @return Returns pointer to the newly allocated QH, or NULL on error. */
+dwc_otg_qh_t *dwc_otg_hcd_qh_create(dwc_otg_hcd_t * hcd,
+				    dwc_otg_hcd_urb_t * urb, int atomic_alloc)
+{
+	dwc_otg_qh_t *qh;
+
+	/* Allocate memory */
+	/** @todo add memflags argument */
+	qh = dwc_otg_hcd_qh_alloc(atomic_alloc);
+	if (qh == NULL) {
+		DWC_ERROR("qh allocation failed");
+		return NULL;
+	}
+
+	qh_init(hcd, qh, urb);
+
+	if (hcd->core_if->dma_desc_enable
+	    && (dwc_otg_hcd_qh_init_ddma(hcd, qh) < 0)) {
+		dwc_otg_hcd_qh_free(hcd, qh);
+		return NULL;
+	}
+
+	return qh;
+}
+
+/* microframe_schedule=0 start */
+
+/**
+ * Checks that a channel is available for a periodic transfer.
+ *
+ * @return 0 if successful, negative error code otherise.
+ */
+static int periodic_channel_available(dwc_otg_hcd_t * hcd)
+{
+	/*
+	 * Currently assuming that there is a dedicated host channnel for each
+	 * periodic transaction plus at least one host channel for
+	 * non-periodic transactions.
+	 */
+	int status;
+	int num_channels;
+
+	num_channels = hcd->core_if->core_params->host_channels;
+	if ((hcd->periodic_channels + hcd->non_periodic_channels < num_channels)
+	    && (hcd->periodic_channels < num_channels - 1)) {
+		status = 0;
+	} else {
+		DWC_INFO("%s: Total channels: %d, Periodic: %d, Non-periodic: %d\n",
+			__func__, num_channels, hcd->periodic_channels, hcd->non_periodic_channels);	//NOTICE
+		status = -DWC_E_NO_SPACE;
+	}
+
+	return status;
+}
+
+/**
+ * Checks that there is sufficient bandwidth for the specified QH in the
+ * periodic schedule. For simplicity, this calculation assumes that all the
+ * transfers in the periodic schedule may occur in the same (micro)frame.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH containing periodic bandwidth required.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int check_periodic_bandwidth(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	int status;
+	int16_t max_claimed_usecs;
+
+	status = 0;
+
+	if ((qh->dev_speed == DWC_OTG_EP_SPEED_HIGH) || qh->do_split) {
+		/*
+		 * High speed mode.
+		 * Max periodic usecs is 80% x 125 usec = 100 usec.
+		 */
+
+		max_claimed_usecs = 100 - qh->usecs;
+	} else {
+		/*
+		 * Full speed mode.
+		 * Max periodic usecs is 90% x 1000 usec = 900 usec.
+		 */
+		max_claimed_usecs = 900 - qh->usecs;
+	}
+
+	if (hcd->periodic_usecs > max_claimed_usecs) {
+		DWC_INFO("%s: already claimed usecs %d, required usecs %d\n", __func__, hcd->periodic_usecs, qh->usecs);	//NOTICE
+		status = -DWC_E_NO_SPACE;
+	}
+
+	return status;
+}
+
+/* microframe_schedule=0 end */
+
+/**
+ * Microframe scheduler
+ * track the total use in hcd->frame_usecs
+ * keep each qh use in qh->frame_usecs
+ * when surrendering the qh then donate the time back
+ */
+const unsigned short max_uframe_usecs[]={ 100, 100, 100, 100, 100, 100, 30, 0 };
+
+/*
+ * called from dwc_otg_hcd.c:dwc_otg_hcd_init
+ */
+int init_hcd_usecs(dwc_otg_hcd_t *_hcd)
+{
+	int i;
+	for (i=0; i<8; i++) {
+		_hcd->frame_usecs[i] = max_uframe_usecs[i];
+	}
+	return 0;
+}
+
+static int find_single_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+	int i;
+	unsigned short utime;
+	int t_left;
+	int ret;
+	int done;
+
+	ret = -1;
+	utime = _qh->usecs;
+	t_left = utime;
+	i = 0;
+	done = 0;
+	while (done == 0) {
+		/* At the start _hcd->frame_usecs[i] = max_uframe_usecs[i]; */
+		if (utime <= _hcd->frame_usecs[i]) {
+			_hcd->frame_usecs[i] -= utime;
+			_qh->frame_usecs[i] += utime;
+			t_left -= utime;
+			ret = i;
+			done = 1;
+			return ret;
+		} else {
+			i++;
+			if (i == 8) {
+				done = 1;
+				ret = -1;
+			}
+		}
+	}
+	return ret;
+ }
+
+/*
+ * use this for FS apps that can span multiple uframes
+  */
+static int find_multi_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+	int i;
+	int j;
+	unsigned short utime;
+	int t_left;
+	int ret;
+	int done;
+	unsigned short xtime;
+
+	ret = -1;
+	utime = _qh->usecs;
+	t_left = utime;
+	i = 0;
+	done = 0;
+loop:
+	while (done == 0) {
+		if(_hcd->frame_usecs[i] <= 0) {
+			i++;
+			if (i == 8) {
+				done = 1;
+				ret = -1;
+			}
+			goto loop;
+		}
+
+		/*
+		 * we need n consecutive slots
+		 * so use j as a start slot j plus j+1 must be enough time (for now)
+		 */
+		xtime= _hcd->frame_usecs[i];
+		for (j = i+1 ; j < 8 ; j++ ) {
+                       /*
+                        * if we add this frame remaining time to xtime we may
+                        * be OK, if not we need to test j for a complete frame
+                        */
+                       if ((xtime+_hcd->frame_usecs[j]) < utime) {
+                               if (_hcd->frame_usecs[j] < max_uframe_usecs[j]) {
+                                       j = 8;
+                                       ret = -1;
+                                       continue;
+                               }
+                       }
+                       if (xtime >= utime) {
+                               ret = i;
+                               j = 8;  /* stop loop with a good value ret */
+                               continue;
+                       }
+                       /* add the frame time to x time */
+                       xtime += _hcd->frame_usecs[j];
+		       /* we must have a fully available next frame or break */
+		       if ((xtime < utime)
+				       && (_hcd->frame_usecs[j] == max_uframe_usecs[j])) {
+			       ret = -1;
+			       j = 8;  /* stop loop with a bad value ret */
+			       continue;
+		       }
+		}
+		if (ret >= 0) {
+			t_left = utime;
+			for (j = i; (t_left>0) && (j < 8); j++ ) {
+				t_left -= _hcd->frame_usecs[j];
+				if ( t_left <= 0 ) {
+					_qh->frame_usecs[j] += _hcd->frame_usecs[j] + t_left;
+					_hcd->frame_usecs[j]= -t_left;
+					ret = i;
+					done = 1;
+				} else {
+					_qh->frame_usecs[j] += _hcd->frame_usecs[j];
+					_hcd->frame_usecs[j] = 0;
+				}
+			}
+		} else {
+			i++;
+			if (i == 8) {
+				done = 1;
+				ret = -1;
+			}
+		}
+	}
+	return ret;
+}
+
+static int find_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
+{
+	int ret;
+	ret = -1;
+
+	if (_qh->speed == USB_SPEED_HIGH) {
+		/* if this is a hs transaction we need a full frame */
+		ret = find_single_uframe(_hcd, _qh);
+	} else {
+		/* if this is a fs transaction we may need a sequence of frames */
+		ret = find_multi_uframe(_hcd, _qh);
+	}
+	return ret;
+}
+
+/**
+ * Checks that the max transfer size allowed in a host channel is large enough
+ * to handle the maximum data transfer in a single (micro)frame for a periodic
+ * transfer.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH for a periodic endpoint.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int check_max_xfer_size(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	int status;
+	uint32_t max_xfer_size;
+	uint32_t max_channel_xfer_size;
+
+	status = 0;
+
+	max_xfer_size = dwc_max_packet(qh->maxp) * dwc_hb_mult(qh->maxp);
+	max_channel_xfer_size = hcd->core_if->core_params->max_transfer_size;
+
+	if (max_xfer_size > max_channel_xfer_size) {
+		DWC_INFO("%s: Periodic xfer length %d > " "max xfer length for channel %d\n",
+				__func__, max_xfer_size, max_channel_xfer_size);	//NOTICE
+		status = -DWC_E_NO_SPACE;
+	}
+
+	return status;
+}
+
+
+
+/**
+ * Schedules an interrupt or isochronous transfer in the periodic schedule.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH for the periodic transfer. The QH should already contain the
+ * scheduling information.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int schedule_periodic(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	int status = 0;
+
+	if (microframe_schedule) {
+		int frame;
+		status = find_uframe(hcd, qh);
+		frame = -1;
+		if (status == 0) {
+			frame = 7;
+		} else {
+			if (status > 0 )
+				frame = status-1;
+		}
+
+		/* Set the new frame up */
+		if (frame > -1) {
+			qh->sched_frame &= ~0x7;
+			qh->sched_frame |= (frame & 7);
+		}
+
+		if (status != -1)
+			status = 0;
+	} else {
+		status = periodic_channel_available(hcd);
+		if (status) {
+			DWC_INFO("%s: No host channel available for periodic " "transfer.\n", __func__);	//NOTICE
+			return status;
+		}
+
+		status = check_periodic_bandwidth(hcd, qh);
+	}
+	if (status) {
+		DWC_INFO("%s: Insufficient periodic bandwidth for "
+			    "periodic transfer.\n", __func__);
+		return status;
+	}
+	status = check_max_xfer_size(hcd, qh);
+	if (status) {
+		DWC_INFO("%s: Channel max transfer size too small "
+			    "for periodic transfer.\n", __func__);
+		return status;
+	}
+
+	if (hcd->core_if->dma_desc_enable) {
+		/* Don't rely on SOF and start in ready schedule */
+		DWC_LIST_INSERT_TAIL(&hcd->periodic_sched_ready, &qh->qh_list_entry);
+	}
+	else {
+		if(fiq_enable && (DWC_LIST_EMPTY(&hcd->periodic_sched_inactive) || dwc_frame_num_le(qh->sched_frame, hcd->fiq_state->next_sched_frame)))
+		{
+			hcd->fiq_state->next_sched_frame = qh->sched_frame;
+
+		}
+		/* Always start in the inactive schedule. */
+		DWC_LIST_INSERT_TAIL(&hcd->periodic_sched_inactive, &qh->qh_list_entry);
+	}
+
+	if (!microframe_schedule) {
+		/* Reserve the periodic channel. */
+		hcd->periodic_channels++;
+	}
+
+	/* Update claimed usecs per (micro)frame. */
+	hcd->periodic_usecs += qh->usecs;
+
+	return status;
+}
+
+
+/**
+ * This function adds a QH to either the non periodic or periodic schedule if
+ * it is not already in the schedule. If the QH is already in the schedule, no
+ * action is taken.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	int status = 0;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	if (!DWC_LIST_EMPTY(&qh->qh_list_entry)) {
+		/* QH already in a schedule. */
+		return status;
+	}
+
+	/* Add the new QH to the appropriate schedule */
+	if (dwc_qh_is_non_per(qh)) {
+		/* Always start in the inactive schedule. */
+		DWC_LIST_INSERT_TAIL(&hcd->non_periodic_sched_inactive,
+				     &qh->qh_list_entry);
+		//hcd->fiq_state->kick_np_queues = 1;
+	} else {
+		status = schedule_periodic(hcd, qh);
+		if ( !hcd->periodic_qh_count ) {
+			intr_mask.b.sofintr = 1;
+			if (fiq_enable) {
+				local_fiq_disable();
+				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
+				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
+				local_fiq_enable();
+			} else {
+				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+			}
+		}
+		hcd->periodic_qh_count++;
+	}
+
+	return status;
+}
+
+/**
+ * Removes an interrupt or isochronous transfer from the periodic schedule.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH for the periodic transfer.
+ */
+static void deschedule_periodic(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	int i;
+	DWC_LIST_REMOVE_INIT(&qh->qh_list_entry);
+
+	/* Update claimed usecs per (micro)frame. */
+	hcd->periodic_usecs -= qh->usecs;
+
+	if (!microframe_schedule) {
+		/* Release the periodic channel reservation. */
+		hcd->periodic_channels--;
+	} else {
+		for (i = 0; i < 8; i++) {
+			hcd->frame_usecs[i] += qh->frame_usecs[i];
+			qh->frame_usecs[i] = 0;
+		}
+	}
+}
+
+/**
+ * Removes a QH from either the non-periodic or periodic schedule.  Memory is
+ * not freed.
+ *
+ * @param hcd The HCD state structure.
+ * @param qh QH to remove from schedule. */
+void dwc_otg_hcd_qh_remove(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
+{
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	if (DWC_LIST_EMPTY(&qh->qh_list_entry)) {
+		/* QH is not in a schedule. */
+		return;
+	}
+
+	if (dwc_qh_is_non_per(qh)) {
+		if (hcd->non_periodic_qh_ptr == &qh->qh_list_entry) {
+			hcd->non_periodic_qh_ptr =
+			    hcd->non_periodic_qh_ptr->next;
+		}
+		DWC_LIST_REMOVE_INIT(&qh->qh_list_entry);
+		//if (!DWC_LIST_EMPTY(&hcd->non_periodic_sched_inactive))
+		//	hcd->fiq_state->kick_np_queues = 1;
+	} else {
+		deschedule_periodic(hcd, qh);
+		hcd->periodic_qh_count--;
+		if( !hcd->periodic_qh_count && !fiq_fsm_enable ) {
+			intr_mask.b.sofintr = 1;
+			if (fiq_enable) {
+				local_fiq_disable();
+				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
+				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, intr_mask.d32, 0);
+				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
+				local_fiq_enable();
+			} else {
+				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, intr_mask.d32, 0);
+			}
+		}
+	}
+}
+
+/**
+ * Deactivates a QH. For non-periodic QHs, removes the QH from the active
+ * non-periodic schedule. The QH is added to the inactive non-periodic
+ * schedule if any QTDs are still attached to the QH.
+ *
+ * For periodic QHs, the QH is removed from the periodic queued schedule. If
+ * there are any QTDs still attached to the QH, the QH is added to either the
+ * periodic inactive schedule or the periodic ready schedule and its next
+ * scheduled frame is calculated. The QH is placed in the ready schedule if
+ * the scheduled frame has been reached already. Otherwise it's placed in the
+ * inactive schedule. If there are no QTDs attached to the QH, the QH is
+ * completely removed from the periodic schedule.
+ */
+void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
+			       int sched_next_periodic_split)
+{
+	if (dwc_qh_is_non_per(qh)) {
+		dwc_otg_hcd_qh_remove(hcd, qh);
+		if (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+			/* Add back to inactive non-periodic schedule. */
+			dwc_otg_hcd_qh_add(hcd, qh);
+			//hcd->fiq_state->kick_np_queues = 1;
+		}
+	} else {
+		uint16_t frame_number = dwc_otg_hcd_get_frame_number(hcd);
+
+		if (qh->do_split) {
+			/* Schedule the next continuing periodic split transfer */
+			if (sched_next_periodic_split) {
+
+				qh->sched_frame = frame_number;
+
+				if (dwc_frame_num_le(frame_number,
+						     dwc_frame_num_inc
+						     (qh->start_split_frame,
+						      1))) {
+					/*
+					 * Allow one frame to elapse after start
+					 * split microframe before scheduling
+					 * complete split, but DONT if we are
+					 * doing the next start split in the
+					 * same frame for an ISOC out.
+					 */
+					if ((qh->ep_type != UE_ISOCHRONOUS) ||
+					    (qh->ep_is_in != 0)) {
+						qh->sched_frame =
+						    dwc_frame_num_inc(qh->sched_frame, 1);
+					}
+				}
+			} else {
+				qh->sched_frame =
+				    dwc_frame_num_inc(qh->start_split_frame,
+						      qh->interval);
+				if (dwc_frame_num_le
+				    (qh->sched_frame, frame_number)) {
+					qh->sched_frame = frame_number;
+				}
+				qh->sched_frame |= 0x7;
+				qh->start_split_frame = qh->sched_frame;
+			}
+		} else {
+			qh->sched_frame =
+			    dwc_frame_num_inc(qh->sched_frame, qh->interval);
+			if (dwc_frame_num_le(qh->sched_frame, frame_number)) {
+				qh->sched_frame = frame_number;
+			}
+		}
+
+		if (DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
+			dwc_otg_hcd_qh_remove(hcd, qh);
+		} else {
+			/*
+			 * Remove from periodic_sched_queued and move to
+			 * appropriate queue.
+			 */
+			if ((microframe_schedule && dwc_frame_num_le(qh->sched_frame, frame_number)) ||
+			(!microframe_schedule && qh->sched_frame == frame_number)) {
+				DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_ready,
+						   &qh->qh_list_entry);
+			} else {
+				if(fiq_enable && !dwc_frame_num_le(hcd->fiq_state->next_sched_frame, qh->sched_frame))
+				{
+					hcd->fiq_state->next_sched_frame = qh->sched_frame;
+				}
+
+				DWC_LIST_MOVE_HEAD
+				    (&hcd->periodic_sched_inactive,
+				     &qh->qh_list_entry);
+			}
+		}
+	}
+}
+
+/**
+ * This function allocates and initializes a QTD.
+ *
+ * @param urb The URB to create a QTD from.  Each URB-QTD pair will end up
+ * 	      pointing to each other so each pair should have a unique correlation.
+ * @param atomic_alloc Flag to do atomic alloc if needed
+ *
+ * @return Returns pointer to the newly allocated QTD, or NULL on error. */
+dwc_otg_qtd_t *dwc_otg_hcd_qtd_create(dwc_otg_hcd_urb_t * urb, int atomic_alloc)
+{
+	dwc_otg_qtd_t *qtd;
+
+	qtd = dwc_otg_hcd_qtd_alloc(atomic_alloc);
+	if (qtd == NULL) {
+		return NULL;
+	}
+
+	dwc_otg_hcd_qtd_init(qtd, urb);
+	return qtd;
+}
+
+/**
+ * Initializes a QTD structure.
+ *
+ * @param qtd The QTD to initialize.
+ * @param urb The URB to use for initialization.  */
+void dwc_otg_hcd_qtd_init(dwc_otg_qtd_t * qtd, dwc_otg_hcd_urb_t * urb)
+{
+	dwc_memset(qtd, 0, sizeof(dwc_otg_qtd_t));
+	qtd->urb = urb;
+	if (dwc_otg_hcd_get_pipe_type(&urb->pipe_info) == UE_CONTROL) {
+		/*
+		 * The only time the QTD data toggle is used is on the data
+		 * phase of control transfers. This phase always starts with
+		 * DATA1.
+		 */
+		qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
+		qtd->control_phase = DWC_OTG_CONTROL_SETUP;
+	}
+
+	/* start split */
+	qtd->complete_split = 0;
+	qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
+	qtd->isoc_split_offset = 0;
+	qtd->in_process = 0;
+
+	/* Store the qtd ptr in the urb to reference what QTD. */
+	urb->qtd = qtd;
+	return;
+}
+
+/**
+ * This function adds a QTD to the QTD-list of a QH.  It will find the correct
+ * QH to place the QTD into.  If it does not find a QH, then it will create a
+ * new QH. If the QH to which the QTD is added is not currently scheduled, it
+ * is placed into the proper schedule based on its EP type.
+ * HCD lock must be held and interrupts must be disabled on entry
+ *
+ * @param[in] qtd The QTD to add
+ * @param[in] hcd The DWC HCD structure
+ * @param[out] qh out parameter to return queue head
+ * @param atomic_alloc Flag to do atomic alloc if needed
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t * qtd,
+			dwc_otg_hcd_t * hcd, dwc_otg_qh_t ** qh, int atomic_alloc)
+{
+	int retval = 0;
+	dwc_otg_hcd_urb_t *urb = qtd->urb;
+
+	/*
+	 * Get the QH which holds the QTD-list to insert to. Create QH if it
+	 * doesn't exist.
+	 */
+	if (*qh == NULL) {
+		*qh = dwc_otg_hcd_qh_create(hcd, urb, atomic_alloc);
+		if (*qh == NULL) {
+			retval = -DWC_E_NO_MEMORY;
+			goto done;
+		} else {
+			if (fiq_enable)
+				hcd->fiq_state->kick_np_queues = 1;
+		}
+	}
+	retval = dwc_otg_hcd_qh_add(hcd, *qh);
+	if (retval == 0) {
+		DWC_CIRCLEQ_INSERT_TAIL(&((*qh)->qtd_list), qtd,
+					qtd_list_entry);
+		qtd->qh = *qh;
+	}
+done:
+
+	return retval;
+}
+
+#endif /* DWC_DEVICE_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_os_dep.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_os_dep.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_os_dep.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_os_dep.h	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,188 @@
+#ifndef _DWC_OS_DEP_H_
+#define _DWC_OS_DEP_H_
+
+/**
+ * @file
+ *
+ * This file contains OS dependent structures.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/dma-mapping.h>
+#include <linux/jiffies.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/workqueue.h>
+#include <linux/stat.h>
+#include <linux/pci.h>
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+# include <linux/irq.h>
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
+# include <linux/usb/ch9.h>
+#else
+# include <linux/usb_ch9.h>
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
+# include <linux/usb/gadget.h>
+#else
+# include <linux/usb_gadget.h>
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+# include <asm/irq.h>
+#endif
+
+#ifdef PCI_INTERFACE
+# include <asm/io.h>
+#endif
+
+#ifdef LM_INTERFACE
+# include <asm/unaligned.h>
+# include <asm/sizes.h>
+# include <asm/param.h>
+# include <asm/io.h>
+# if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30))
+#  include <asm/arch/hardware.h>
+#  include <asm/arch/lm.h>
+#  include <asm/arch/irqs.h>
+#  include <asm/arch/regs-irq.h>
+# else
+/* in 2.6.31, at least, we seem to have lost the generic LM infrastructure -
+   here we assume that the machine architecture provides definitions
+   in its own header
+*/
+#  include <mach/lm.h>
+#  include <mach/hardware.h>
+# endif
+#endif
+
+#ifdef PLATFORM_INTERFACE
+#include <linux/platform_device.h>
+#include <asm/mach/map.h>
+#endif
+
+/** The OS page size */
+#define DWC_OS_PAGE_SIZE	PAGE_SIZE
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
+typedef int gfp_t;
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
+# define IRQF_SHARED SA_SHIRQ
+#endif
+
+typedef struct os_dependent {
+	/** Base address returned from ioremap() */
+	void *base;
+
+	/** Register offset for Diagnostic API */
+	uint32_t reg_offset;
+
+	/** Base address for MPHI peripheral */
+	void *mphi_base;
+
+#ifdef LM_INTERFACE
+	struct lm_device *lmdev;
+#elif  defined(PCI_INTERFACE)
+	struct pci_dev *pcidev;
+
+	/** Start address of a PCI region */
+	resource_size_t rsrc_start;
+
+	/** Length address of a PCI region */
+	resource_size_t rsrc_len;
+#elif  defined(PLATFORM_INTERFACE)
+	struct platform_device *platformdev;
+#endif
+
+} os_dependent_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
+/* Type for the our device on the chosen bus */
+#if   defined(LM_INTERFACE)
+typedef struct lm_device       dwc_bus_dev_t;
+#elif defined(PCI_INTERFACE)
+typedef struct pci_dev         dwc_bus_dev_t;
+#elif defined(PLATFORM_INTERFACE)
+typedef struct platform_device dwc_bus_dev_t;
+#endif
+
+/* Helper macro to retrieve drvdata from the device on the chosen bus */
+#if    defined(LM_INTERFACE)
+#define DWC_OTG_BUSDRVDATA(_dev) lm_get_drvdata(_dev)
+#elif  defined(PCI_INTERFACE)
+#define DWC_OTG_BUSDRVDATA(_dev) pci_get_drvdata(_dev)
+#elif  defined(PLATFORM_INTERFACE)
+#define DWC_OTG_BUSDRVDATA(_dev) platform_get_drvdata(_dev)
+#endif
+
+/**
+ * Helper macro returning the otg_device structure of a given struct device
+ *
+ * c.f. static dwc_otg_device_t *dwc_otg_drvdev(struct device *_dev)
+ */
+#ifdef LM_INTERFACE
+#define DWC_OTG_GETDRVDEV(_var, _dev) do { \
+                struct lm_device *lm_dev = \
+                        container_of(_dev, struct lm_device, dev); \
+                _var = lm_get_drvdata(lm_dev); \
+        } while (0)
+
+#elif defined(PCI_INTERFACE)
+#define DWC_OTG_GETDRVDEV(_var, _dev) do { \
+                _var = dev_get_drvdata(_dev); \
+        } while (0)
+
+#elif defined(PLATFORM_INTERFACE)
+#define DWC_OTG_GETDRVDEV(_var, _dev) do { \
+                struct platform_device *platform_dev = \
+                        container_of(_dev, struct platform_device, dev); \
+                _var = platform_get_drvdata(platform_dev); \
+        } while (0)
+#endif
+
+
+/**
+ * Helper macro returning the struct dev of the given struct os_dependent
+ *
+ * c.f. static struct device *dwc_otg_getdev(struct os_dependent *osdep)
+ */
+#ifdef LM_INTERFACE
+#define DWC_OTG_OS_GETDEV(_osdep) \
+        ((_osdep).lmdev == NULL? NULL: &(_osdep).lmdev->dev)
+#elif defined(PCI_INTERFACE)
+#define DWC_OTG_OS_GETDEV(_osdep) \
+        ((_osdep).pci_dev == NULL? NULL: &(_osdep).pci_dev->dev)
+#elif defined(PLATFORM_INTERFACE)
+#define DWC_OTG_OS_GETDEV(_osdep) \
+        ((_osdep).platformdev == NULL? NULL: &(_osdep).platformdev->dev)
+#endif
+
+
+
+
+#endif /* _DWC_OS_DEP_H_ */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd.c	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,2712 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.c $
+ * $Revision: #101 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+
+/** @file
+ * This file implements PCD Core. All code in this file is portable and doesn't
+ * use any OS specific functions.
+ * PCD Core provides Interface, defined in <code><dwc_otg_pcd_if.h></code>
+ * header file, which can be used to implement OS specific PCD interface.
+ *
+ * An important function of the PCD is managing interrupts generated
+ * by the DWC_otg controller. The implementation of the DWC_otg device
+ * mode interrupt service routines is in dwc_otg_pcd_intr.c.
+ *
+ * @todo Add Device Mode test modes (Test J mode, Test K mode, etc).
+ * @todo Does it work when the request size is greater than DEPTSIZ
+ * transfer size
+ *
+ */
+
+#include "dwc_otg_pcd.h"
+
+#ifdef DWC_UTE_CFI
+#include "dwc_otg_cfi.h"
+
+extern int init_cfi(cfiobject_t * cfiobj);
+#endif
+
+/**
+ * Choose endpoint from ep arrays using usb_ep structure.
+ */
+static dwc_otg_pcd_ep_t *get_ep_from_handle(dwc_otg_pcd_t * pcd, void *handle)
+{
+	int i;
+	if (pcd->ep0.priv == handle) {
+		return &pcd->ep0;
+	}
+	for (i = 0; i < MAX_EPS_CHANNELS - 1; i++) {
+		if (pcd->in_ep[i].priv == handle)
+			return &pcd->in_ep[i];
+		if (pcd->out_ep[i].priv == handle)
+			return &pcd->out_ep[i];
+	}
+
+	return NULL;
+}
+
+/**
+ * This function completes a request.  It call's the request call back.
+ */
+void dwc_otg_request_done(dwc_otg_pcd_ep_t * ep, dwc_otg_pcd_request_t * req,
+			  int32_t status)
+{
+	unsigned stopped = ep->stopped;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(ep %p req %p)\n", __func__, ep, req);
+	DWC_CIRCLEQ_REMOVE_INIT(&ep->queue, req, queue_entry);
+
+	/* don't modify queue heads during completion callback */
+	ep->stopped = 1;
+	/* spin_unlock/spin_lock now done in fops->complete() */
+	ep->pcd->fops->complete(ep->pcd, ep->priv, req->priv, status,
+				req->actual);
+
+	if (ep->pcd->request_pending > 0) {
+		--ep->pcd->request_pending;
+	}
+
+	ep->stopped = stopped;
+	DWC_FREE(req);
+}
+
+/**
+ * This function terminates all the requsts in the EP request queue.
+ */
+void dwc_otg_request_nuke(dwc_otg_pcd_ep_t * ep)
+{
+	dwc_otg_pcd_request_t *req;
+
+	ep->stopped = 1;
+
+	/* called with irqs blocked?? */
+	while (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+		req = DWC_CIRCLEQ_FIRST(&ep->queue);
+		dwc_otg_request_done(ep, req, -DWC_E_SHUTDOWN);
+	}
+}
+
+void dwc_otg_pcd_start(dwc_otg_pcd_t * pcd,
+		       const struct dwc_otg_pcd_function_ops *fops)
+{
+	pcd->fops = fops;
+}
+
+/**
+ * PCD Callback function for initializing the PCD when switching to
+ * device mode.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_start_cb(void *p)
+{
+	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+	/*
+	 * Initialized the Core for Device mode.
+	 */
+	if (dwc_otg_is_device_mode(core_if)) {
+		dwc_otg_core_dev_init(core_if);
+		/* Set core_if's lock pointer to the pcd->lock */
+		core_if->lock = pcd->lock;
+	}
+	return 1;
+}
+
+/** CFI-specific buffer allocation function for EP */
+#ifdef DWC_UTE_CFI
+uint8_t *cfiw_ep_alloc_buffer(dwc_otg_pcd_t * pcd, void *pep, dwc_dma_t * addr,
+			      size_t buflen, int flags)
+{
+	dwc_otg_pcd_ep_t *ep;
+	ep = get_ep_from_handle(pcd, pep);
+	if (!ep) {
+		DWC_WARN("bad ep\n");
+		return -DWC_E_INVALID;
+	}
+
+	return pcd->cfi->ops.ep_alloc_buf(pcd->cfi, pcd, ep, addr, buflen,
+					  flags);
+}
+#else
+uint8_t *cfiw_ep_alloc_buffer(dwc_otg_pcd_t * pcd, void *pep, dwc_dma_t * addr,
+			      size_t buflen, int flags);
+#endif
+
+/**
+ * PCD Callback function for notifying the PCD when resuming from
+ * suspend.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_resume_cb(void *p)
+{
+	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
+
+	if (pcd->fops->resume) {
+		pcd->fops->resume(pcd);
+	}
+
+	/* Stop the SRP timeout timer. */
+	if ((GET_CORE_IF(pcd)->core_params->phy_type != DWC_PHY_TYPE_PARAM_FS)
+	    || (!GET_CORE_IF(pcd)->core_params->i2c_enable)) {
+		if (GET_CORE_IF(pcd)->srp_timer_started) {
+			GET_CORE_IF(pcd)->srp_timer_started = 0;
+			DWC_TIMER_CANCEL(GET_CORE_IF(pcd)->srp_timer);
+		}
+	}
+	return 1;
+}
+
+/**
+ * PCD Callback function for notifying the PCD device is suspended.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_suspend_cb(void *p)
+{
+	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
+
+	if (pcd->fops->suspend) {
+		DWC_SPINUNLOCK(pcd->lock);
+		pcd->fops->suspend(pcd);
+		DWC_SPINLOCK(pcd->lock);
+	}
+
+	return 1;
+}
+
+/**
+ * PCD Callback function for stopping the PCD when switching to Host
+ * mode.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_stop_cb(void *p)
+{
+	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
+	extern void dwc_otg_pcd_stop(dwc_otg_pcd_t * _pcd);
+
+	dwc_otg_pcd_stop(pcd);
+	return 1;
+}
+
+/**
+ * PCD Callback structure for handling mode switching.
+ */
+static dwc_otg_cil_callbacks_t pcd_callbacks = {
+	.start = dwc_otg_pcd_start_cb,
+	.stop = dwc_otg_pcd_stop_cb,
+	.suspend = dwc_otg_pcd_suspend_cb,
+	.resume_wakeup = dwc_otg_pcd_resume_cb,
+	.p = 0,			/* Set at registration */
+};
+
+/**
+ * This function allocates a DMA Descriptor chain for the Endpoint
+ * buffer to be used for a transfer to/from the specified endpoint.
+ */
+dwc_otg_dev_dma_desc_t *dwc_otg_ep_alloc_desc_chain(dwc_dma_t * dma_desc_addr,
+						    uint32_t count)
+{
+	return DWC_DMA_ALLOC_ATOMIC(count * sizeof(dwc_otg_dev_dma_desc_t),
+							dma_desc_addr);
+}
+
+/**
+ * This function frees a DMA Descriptor chain that was allocated by ep_alloc_desc.
+ */
+void dwc_otg_ep_free_desc_chain(dwc_otg_dev_dma_desc_t * desc_addr,
+				uint32_t dma_desc_addr, uint32_t count)
+{
+	DWC_DMA_FREE(count * sizeof(dwc_otg_dev_dma_desc_t), desc_addr,
+		     dma_desc_addr);
+}
+
+#ifdef DWC_EN_ISOC
+
+/**
+ * This function initializes a descriptor chain for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_iso_ep_start_ddma_transfer(dwc_otg_core_if_t * core_if,
+					dwc_ep_t * dwc_ep)
+{
+
+	dsts_data_t dsts = {.d32 = 0 };
+	depctl_data_t depctl = {.d32 = 0 };
+	volatile uint32_t *addr;
+	int i, j;
+	uint32_t len;
+
+	if (dwc_ep->is_in)
+		dwc_ep->desc_cnt = dwc_ep->buf_proc_intrvl / dwc_ep->bInterval;
+	else
+		dwc_ep->desc_cnt =
+		    dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm /
+		    dwc_ep->bInterval;
+
+	/** Allocate descriptors for double buffering */
+	dwc_ep->iso_desc_addr =
+	    dwc_otg_ep_alloc_desc_chain(&dwc_ep->iso_dma_desc_addr,
+					dwc_ep->desc_cnt * 2);
+	if (dwc_ep->desc_addr) {
+		DWC_WARN("%s, can't allocate DMA descriptor chain\n", __func__);
+		return;
+	}
+
+	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+	/** ISO OUT EP */
+	if (dwc_ep->is_in == 0) {
+		dev_dma_desc_sts_t sts = {.d32 = 0 };
+		dwc_otg_dev_dma_desc_t *dma_desc = dwc_ep->iso_desc_addr;
+		dma_addr_t dma_ad;
+		uint32_t data_per_desc;
+		dwc_otg_dev_out_ep_regs_t *out_regs =
+		    core_if->dev_if->out_ep_regs[dwc_ep->num];
+		int offset;
+
+		addr = &core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl;
+		dma_ad = (dma_addr_t) DWC_READ_REG32(&(out_regs->doepdma));
+
+		/** Buffer 0 descriptors setup */
+		dma_ad = dwc_ep->dma_addr0;
+
+		sts.b_iso_out.bs = BS_HOST_READY;
+		sts.b_iso_out.rxsts = 0;
+		sts.b_iso_out.l = 0;
+		sts.b_iso_out.sp = 0;
+		sts.b_iso_out.ioc = 0;
+		sts.b_iso_out.pid = 0;
+		sts.b_iso_out.framenum = 0;
+
+		offset = 0;
+		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+		     i += dwc_ep->pkt_per_frm) {
+
+			for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
+				uint32_t len = (j + 1) * dwc_ep->maxpacket;
+				if (len > dwc_ep->data_per_frame)
+					data_per_desc =
+					    dwc_ep->data_per_frame -
+					    j * dwc_ep->maxpacket;
+				else
+					data_per_desc = dwc_ep->maxpacket;
+				len = data_per_desc % 4;
+				if (len)
+					data_per_desc += 4 - len;
+
+				sts.b_iso_out.rxbytes = data_per_desc;
+				dma_desc->buf = dma_ad;
+				dma_desc->status.d32 = sts.d32;
+
+				offset += data_per_desc;
+				dma_desc++;
+				dma_ad += data_per_desc;
+			}
+		}
+
+		for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
+			uint32_t len = (j + 1) * dwc_ep->maxpacket;
+			if (len > dwc_ep->data_per_frame)
+				data_per_desc =
+				    dwc_ep->data_per_frame -
+				    j * dwc_ep->maxpacket;
+			else
+				data_per_desc = dwc_ep->maxpacket;
+			len = data_per_desc % 4;
+			if (len)
+				data_per_desc += 4 - len;
+			sts.b_iso_out.rxbytes = data_per_desc;
+			dma_desc->buf = dma_ad;
+			dma_desc->status.d32 = sts.d32;
+
+			offset += data_per_desc;
+			dma_desc++;
+			dma_ad += data_per_desc;
+		}
+
+		sts.b_iso_out.ioc = 1;
+		len = (j + 1) * dwc_ep->maxpacket;
+		if (len > dwc_ep->data_per_frame)
+			data_per_desc =
+			    dwc_ep->data_per_frame - j * dwc_ep->maxpacket;
+		else
+			data_per_desc = dwc_ep->maxpacket;
+		len = data_per_desc % 4;
+		if (len)
+			data_per_desc += 4 - len;
+		sts.b_iso_out.rxbytes = data_per_desc;
+
+		dma_desc->buf = dma_ad;
+		dma_desc->status.d32 = sts.d32;
+		dma_desc++;
+
+		/** Buffer 1 descriptors setup */
+		sts.b_iso_out.ioc = 0;
+		dma_ad = dwc_ep->dma_addr1;
+
+		offset = 0;
+		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+		     i += dwc_ep->pkt_per_frm) {
+			for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
+				uint32_t len = (j + 1) * dwc_ep->maxpacket;
+				if (len > dwc_ep->data_per_frame)
+					data_per_desc =
+					    dwc_ep->data_per_frame -
+					    j * dwc_ep->maxpacket;
+				else
+					data_per_desc = dwc_ep->maxpacket;
+				len = data_per_desc % 4;
+				if (len)
+					data_per_desc += 4 - len;
+
+				data_per_desc =
+				    sts.b_iso_out.rxbytes = data_per_desc;
+				dma_desc->buf = dma_ad;
+				dma_desc->status.d32 = sts.d32;
+
+				offset += data_per_desc;
+				dma_desc++;
+				dma_ad += data_per_desc;
+			}
+		}
+		for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
+			data_per_desc =
+			    ((j + 1) * dwc_ep->maxpacket >
+			     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+			    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+			data_per_desc +=
+			    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+			sts.b_iso_out.rxbytes = data_per_desc;
+			dma_desc->buf = dma_ad;
+			dma_desc->status.d32 = sts.d32;
+
+			offset += data_per_desc;
+			dma_desc++;
+			dma_ad += data_per_desc;
+		}
+
+		sts.b_iso_out.ioc = 1;
+		sts.b_iso_out.l = 1;
+		data_per_desc =
+		    ((j + 1) * dwc_ep->maxpacket >
+		     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+		    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+		data_per_desc +=
+		    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+		sts.b_iso_out.rxbytes = data_per_desc;
+
+		dma_desc->buf = dma_ad;
+		dma_desc->status.d32 = sts.d32;
+
+		dwc_ep->next_frame = 0;
+
+		/** Write dma_ad into DOEPDMA register */
+		DWC_WRITE_REG32(&(out_regs->doepdma),
+				(uint32_t) dwc_ep->iso_dma_desc_addr);
+
+	}
+	/** ISO IN EP */
+	else {
+		dev_dma_desc_sts_t sts = {.d32 = 0 };
+		dwc_otg_dev_dma_desc_t *dma_desc = dwc_ep->iso_desc_addr;
+		dma_addr_t dma_ad;
+		dwc_otg_dev_in_ep_regs_t *in_regs =
+		    core_if->dev_if->in_ep_regs[dwc_ep->num];
+		unsigned int frmnumber;
+		fifosize_data_t txfifosize, rxfifosize;
+
+		txfifosize.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[dwc_ep->num]->
+				   dtxfsts);
+		rxfifosize.d32 =
+		    DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
+
+		addr = &core_if->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+
+		dma_ad = dwc_ep->dma_addr0;
+
+		dsts.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+		sts.b_iso_in.bs = BS_HOST_READY;
+		sts.b_iso_in.txsts = 0;
+		sts.b_iso_in.sp =
+		    (dwc_ep->data_per_frame % dwc_ep->maxpacket) ? 1 : 0;
+		sts.b_iso_in.ioc = 0;
+		sts.b_iso_in.pid = dwc_ep->pkt_per_frm;
+
+		frmnumber = dwc_ep->next_frame;
+
+		sts.b_iso_in.framenum = frmnumber;
+		sts.b_iso_in.txbytes = dwc_ep->data_per_frame;
+		sts.b_iso_in.l = 0;
+
+		/** Buffer 0 descriptors setup */
+		for (i = 0; i < dwc_ep->desc_cnt - 1; i++) {
+			dma_desc->buf = dma_ad;
+			dma_desc->status.d32 = sts.d32;
+			dma_desc++;
+
+			dma_ad += dwc_ep->data_per_frame;
+			sts.b_iso_in.framenum += dwc_ep->bInterval;
+		}
+
+		sts.b_iso_in.ioc = 1;
+		dma_desc->buf = dma_ad;
+		dma_desc->status.d32 = sts.d32;
+		++dma_desc;
+
+		/** Buffer 1 descriptors setup */
+		sts.b_iso_in.ioc = 0;
+		dma_ad = dwc_ep->dma_addr1;
+
+		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+		     i += dwc_ep->pkt_per_frm) {
+			dma_desc->buf = dma_ad;
+			dma_desc->status.d32 = sts.d32;
+			dma_desc++;
+
+			dma_ad += dwc_ep->data_per_frame;
+			sts.b_iso_in.framenum += dwc_ep->bInterval;
+
+			sts.b_iso_in.ioc = 0;
+		}
+		sts.b_iso_in.ioc = 1;
+		sts.b_iso_in.l = 1;
+
+		dma_desc->buf = dma_ad;
+		dma_desc->status.d32 = sts.d32;
+
+		dwc_ep->next_frame = sts.b_iso_in.framenum + dwc_ep->bInterval;
+
+		/** Write dma_ad into diepdma register */
+		DWC_WRITE_REG32(&(in_regs->diepdma),
+				(uint32_t) dwc_ep->iso_dma_desc_addr);
+	}
+	/** Enable endpoint, clear nak  */
+	depctl.d32 = 0;
+	depctl.b.epena = 1;
+	depctl.b.usbactep = 1;
+	depctl.b.cnak = 1;
+
+	DWC_MODIFY_REG32(addr, depctl.d32, depctl.d32);
+	depctl.d32 = DWC_READ_REG32(addr);
+}
+
+/**
+ * This function initializes a descriptor chain for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_iso_ep_start_buf_transfer(dwc_otg_core_if_t * core_if,
+				       dwc_ep_t * ep)
+{
+	depctl_data_t depctl = {.d32 = 0 };
+	volatile uint32_t *addr;
+
+	if (ep->is_in) {
+		addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+	} else {
+		addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+	}
+
+	if (core_if->dma_enable == 0 || core_if->dma_desc_enable != 0) {
+		return;
+	} else {
+		deptsiz_data_t deptsiz = {.d32 = 0 };
+
+		ep->xfer_len =
+		    ep->data_per_frame * ep->buf_proc_intrvl / ep->bInterval;
+		ep->pkt_cnt =
+		    (ep->xfer_len - 1 + ep->maxpacket) / ep->maxpacket;
+		ep->xfer_count = 0;
+		ep->xfer_buff =
+		    (ep->proc_buf_num) ? ep->xfer_buff1 : ep->xfer_buff0;
+		ep->dma_addr =
+		    (ep->proc_buf_num) ? ep->dma_addr1 : ep->dma_addr0;
+
+		if (ep->is_in) {
+			/* Program the transfer size and packet count
+			 *      as follows: xfersize = N * maxpacket +
+			 *      short_packet pktcnt = N + (short_packet
+			 *      exist ? 1 : 0)
+			 */
+			deptsiz.b.mc = ep->pkt_per_frm;
+			deptsiz.b.xfersize = ep->xfer_len;
+			deptsiz.b.pktcnt =
+			    (ep->xfer_len - 1 + ep->maxpacket) / ep->maxpacket;
+			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+					dieptsiz, deptsiz.d32);
+
+			/* Write the DMA register */
+			DWC_WRITE_REG32(&
+					(core_if->dev_if->in_ep_regs[ep->num]->
+					 diepdma), (uint32_t) ep->dma_addr);
+
+		} else {
+			deptsiz.b.pktcnt =
+			    (ep->xfer_len + (ep->maxpacket - 1)) /
+			    ep->maxpacket;
+			deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
+
+			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[ep->num]->
+					doeptsiz, deptsiz.d32);
+
+			/* Write the DMA register */
+			DWC_WRITE_REG32(&
+					(core_if->dev_if->out_ep_regs[ep->num]->
+					 doepdma), (uint32_t) ep->dma_addr);
+
+		}
+		/** Enable endpoint, clear nak  */
+		depctl.d32 = 0;
+		depctl.b.epena = 1;
+		depctl.b.cnak = 1;
+
+		DWC_MODIFY_REG32(addr, depctl.d32, depctl.d32);
+	}
+}
+
+/**
+ * This function does the setup for a data transfer for an EP and
+ * starts the transfer. For an IN transfer, the packets will be
+ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
+ * the packets are unloaded from the Rx FIFO in the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+
+static void dwc_otg_iso_ep_start_transfer(dwc_otg_core_if_t * core_if,
+					  dwc_ep_t * ep)
+{
+	if (core_if->dma_enable) {
+		if (core_if->dma_desc_enable) {
+			if (ep->is_in) {
+				ep->desc_cnt = ep->pkt_cnt / ep->pkt_per_frm;
+			} else {
+				ep->desc_cnt = ep->pkt_cnt;
+			}
+			dwc_otg_iso_ep_start_ddma_transfer(core_if, ep);
+		} else {
+			if (core_if->pti_enh_enable) {
+				dwc_otg_iso_ep_start_buf_transfer(core_if, ep);
+			} else {
+				ep->cur_pkt_addr =
+				    (ep->proc_buf_num) ? ep->xfer_buff1 : ep->
+				    xfer_buff0;
+				ep->cur_pkt_dma_addr =
+				    (ep->proc_buf_num) ? ep->dma_addr1 : ep->
+				    dma_addr0;
+				dwc_otg_iso_ep_start_frm_transfer(core_if, ep);
+			}
+		}
+	} else {
+		ep->cur_pkt_addr =
+		    (ep->proc_buf_num) ? ep->xfer_buff1 : ep->xfer_buff0;
+		ep->cur_pkt_dma_addr =
+		    (ep->proc_buf_num) ? ep->dma_addr1 : ep->dma_addr0;
+		dwc_otg_iso_ep_start_frm_transfer(core_if, ep);
+	}
+}
+
+/**
+ * This function stops transfer for an EP and
+ * resets the ep's variables.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+
+void dwc_otg_iso_ep_stop_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	depctl_data_t depctl = {.d32 = 0 };
+	volatile uint32_t *addr;
+
+	if (ep->is_in == 1) {
+		addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+	} else {
+		addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+	}
+
+	/* disable the ep */
+	depctl.d32 = DWC_READ_REG32(addr);
+
+	depctl.b.epdis = 1;
+	depctl.b.snak = 1;
+
+	DWC_WRITE_REG32(addr, depctl.d32);
+
+	if (core_if->dma_desc_enable &&
+	    ep->iso_desc_addr && ep->iso_dma_desc_addr) {
+		dwc_otg_ep_free_desc_chain(ep->iso_desc_addr,
+					   ep->iso_dma_desc_addr,
+					   ep->desc_cnt * 2);
+	}
+
+	/* reset varibales */
+	ep->dma_addr0 = 0;
+	ep->dma_addr1 = 0;
+	ep->xfer_buff0 = 0;
+	ep->xfer_buff1 = 0;
+	ep->data_per_frame = 0;
+	ep->data_pattern_frame = 0;
+	ep->sync_frame = 0;
+	ep->buf_proc_intrvl = 0;
+	ep->bInterval = 0;
+	ep->proc_buf_num = 0;
+	ep->pkt_per_frm = 0;
+	ep->pkt_per_frm = 0;
+	ep->desc_cnt = 0;
+	ep->iso_desc_addr = 0;
+	ep->iso_dma_desc_addr = 0;
+}
+
+int dwc_otg_pcd_iso_ep_start(dwc_otg_pcd_t * pcd, void *ep_handle,
+			     uint8_t * buf0, uint8_t * buf1, dwc_dma_t dma0,
+			     dwc_dma_t dma1, int sync_frame, int dp_frame,
+			     int data_per_frame, int start_frame,
+			     int buf_proc_intrvl, void *req_handle,
+			     int atomic_alloc)
+{
+	dwc_otg_pcd_ep_t *ep;
+	dwc_irqflags_t flags = 0;
+	dwc_ep_t *dwc_ep;
+	int32_t frm_data;
+	dsts_data_t dsts;
+	dwc_otg_core_if_t *core_if;
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+
+	if (!ep || !ep->desc || ep->dwc_ep.num == 0) {
+		DWC_WARN("bad ep\n");
+		return -DWC_E_INVALID;
+	}
+
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+	core_if = GET_CORE_IF(pcd);
+	dwc_ep = &ep->dwc_ep;
+
+	if (ep->iso_req_handle) {
+		DWC_WARN("ISO request in progress\n");
+	}
+
+	dwc_ep->dma_addr0 = dma0;
+	dwc_ep->dma_addr1 = dma1;
+
+	dwc_ep->xfer_buff0 = buf0;
+	dwc_ep->xfer_buff1 = buf1;
+
+	dwc_ep->data_per_frame = data_per_frame;
+
+	/** @todo - pattern data support is to be implemented in the future */
+	dwc_ep->data_pattern_frame = dp_frame;
+	dwc_ep->sync_frame = sync_frame;
+
+	dwc_ep->buf_proc_intrvl = buf_proc_intrvl;
+
+	dwc_ep->bInterval = 1 << (ep->desc->bInterval - 1);
+
+	dwc_ep->proc_buf_num = 0;
+
+	dwc_ep->pkt_per_frm = 0;
+	frm_data = ep->dwc_ep.data_per_frame;
+	while (frm_data > 0) {
+		dwc_ep->pkt_per_frm++;
+		frm_data -= ep->dwc_ep.maxpacket;
+	}
+
+	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+	if (start_frame == -1) {
+		dwc_ep->next_frame = dsts.b.soffn + 1;
+		if (dwc_ep->bInterval != 1) {
+			dwc_ep->next_frame =
+			    dwc_ep->next_frame + (dwc_ep->bInterval - 1 -
+						  dwc_ep->next_frame %
+						  dwc_ep->bInterval);
+		}
+	} else {
+		dwc_ep->next_frame = start_frame;
+	}
+
+	if (!core_if->pti_enh_enable) {
+		dwc_ep->pkt_cnt =
+		    dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm /
+		    dwc_ep->bInterval;
+	} else {
+		dwc_ep->pkt_cnt =
+		    (dwc_ep->data_per_frame *
+		     (dwc_ep->buf_proc_intrvl / dwc_ep->bInterval)
+		     - 1 + dwc_ep->maxpacket) / dwc_ep->maxpacket;
+	}
+
+	if (core_if->dma_desc_enable) {
+		dwc_ep->desc_cnt =
+		    dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm /
+		    dwc_ep->bInterval;
+	}
+
+	if (atomic_alloc) {
+		dwc_ep->pkt_info =
+		    DWC_ALLOC_ATOMIC(sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
+	} else {
+		dwc_ep->pkt_info =
+		    DWC_ALLOC(sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
+	}
+	if (!dwc_ep->pkt_info) {
+		DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+		return -DWC_E_NO_MEMORY;
+	}
+	if (core_if->pti_enh_enable) {
+		dwc_memset(dwc_ep->pkt_info, 0,
+			   sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
+	}
+
+	dwc_ep->cur_pkt = 0;
+	ep->iso_req_handle = req_handle;
+
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+	dwc_otg_iso_ep_start_transfer(core_if, dwc_ep);
+	return 0;
+}
+
+int dwc_otg_pcd_iso_ep_stop(dwc_otg_pcd_t * pcd, void *ep_handle,
+			    void *req_handle)
+{
+	dwc_irqflags_t flags = 0;
+	dwc_otg_pcd_ep_t *ep;
+	dwc_ep_t *dwc_ep;
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+	if (!ep || !ep->desc || ep->dwc_ep.num == 0) {
+		DWC_WARN("bad ep\n");
+		return -DWC_E_INVALID;
+	}
+	dwc_ep = &ep->dwc_ep;
+
+	dwc_otg_iso_ep_stop_transfer(GET_CORE_IF(pcd), dwc_ep);
+
+	DWC_FREE(dwc_ep->pkt_info);
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+	if (ep->iso_req_handle != req_handle) {
+		DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+		return -DWC_E_INVALID;
+	}
+
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+	ep->iso_req_handle = 0;
+	return 0;
+}
+
+/**
+ * This function is used for perodical data exchnage between PCD and gadget drivers.
+ * for Isochronous EPs
+ *
+ *	- Every time a sync period completes this function is called to
+ *	  perform data exchange between PCD and gadget
+ */
+void dwc_otg_iso_buffer_done(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep,
+			     void *req_handle)
+{
+	int i;
+	dwc_ep_t *dwc_ep;
+
+	dwc_ep = &ep->dwc_ep;
+
+	DWC_SPINUNLOCK(ep->pcd->lock);
+	pcd->fops->isoc_complete(pcd, ep->priv, ep->iso_req_handle,
+				 dwc_ep->proc_buf_num ^ 0x1);
+	DWC_SPINLOCK(ep->pcd->lock);
+
+	for (i = 0; i < dwc_ep->pkt_cnt; ++i) {
+		dwc_ep->pkt_info[i].status = 0;
+		dwc_ep->pkt_info[i].offset = 0;
+		dwc_ep->pkt_info[i].length = 0;
+	}
+}
+
+int dwc_otg_pcd_get_iso_packet_count(dwc_otg_pcd_t * pcd, void *ep_handle,
+				     void *iso_req_handle)
+{
+	dwc_otg_pcd_ep_t *ep;
+	dwc_ep_t *dwc_ep;
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+	if (!ep->desc || ep->dwc_ep.num == 0) {
+		DWC_WARN("bad ep\n");
+		return -DWC_E_INVALID;
+	}
+	dwc_ep = &ep->dwc_ep;
+
+	return dwc_ep->pkt_cnt;
+}
+
+void dwc_otg_pcd_get_iso_packet_params(dwc_otg_pcd_t * pcd, void *ep_handle,
+				       void *iso_req_handle, int packet,
+				       int *status, int *actual, int *offset)
+{
+	dwc_otg_pcd_ep_t *ep;
+	dwc_ep_t *dwc_ep;
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+	if (!ep)
+		DWC_WARN("bad ep\n");
+
+	dwc_ep = &ep->dwc_ep;
+
+	*status = dwc_ep->pkt_info[packet].status;
+	*actual = dwc_ep->pkt_info[packet].length;
+	*offset = dwc_ep->pkt_info[packet].offset;
+}
+
+#endif /* DWC_EN_ISOC */
+
+static void dwc_otg_pcd_init_ep(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * pcd_ep,
+				uint32_t is_in, uint32_t ep_num)
+{
+	/* Init EP structure */
+	pcd_ep->desc = 0;
+	pcd_ep->pcd = pcd;
+	pcd_ep->stopped = 1;
+	pcd_ep->queue_sof = 0;
+
+	/* Init DWC ep structure */
+	pcd_ep->dwc_ep.is_in = is_in;
+	pcd_ep->dwc_ep.num = ep_num;
+	pcd_ep->dwc_ep.active = 0;
+	pcd_ep->dwc_ep.tx_fifo_num = 0;
+	/* Control until ep is actvated */
+	pcd_ep->dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
+	pcd_ep->dwc_ep.maxpacket = MAX_PACKET_SIZE;
+	pcd_ep->dwc_ep.dma_addr = 0;
+	pcd_ep->dwc_ep.start_xfer_buff = 0;
+	pcd_ep->dwc_ep.xfer_buff = 0;
+	pcd_ep->dwc_ep.xfer_len = 0;
+	pcd_ep->dwc_ep.xfer_count = 0;
+	pcd_ep->dwc_ep.sent_zlp = 0;
+	pcd_ep->dwc_ep.total_len = 0;
+	pcd_ep->dwc_ep.desc_addr = 0;
+	pcd_ep->dwc_ep.dma_desc_addr = 0;
+	DWC_CIRCLEQ_INIT(&pcd_ep->queue);
+}
+
+/**
+ * Initialize ep's
+ */
+static void dwc_otg_pcd_reinit(dwc_otg_pcd_t * pcd)
+{
+	int i;
+	uint32_t hwcfg1;
+	dwc_otg_pcd_ep_t *ep;
+	int in_ep_cntr, out_ep_cntr;
+	uint32_t num_in_eps = (GET_CORE_IF(pcd))->dev_if->num_in_eps;
+	uint32_t num_out_eps = (GET_CORE_IF(pcd))->dev_if->num_out_eps;
+
+	/**
+	 * Initialize the EP0 structure.
+	 */
+	ep = &pcd->ep0;
+	dwc_otg_pcd_init_ep(pcd, ep, 0, 0);
+
+	in_ep_cntr = 0;
+	hwcfg1 = (GET_CORE_IF(pcd))->hwcfg1.d32 >> 3;
+	for (i = 1; in_ep_cntr < num_in_eps; i++) {
+		if ((hwcfg1 & 0x1) == 0) {
+			dwc_otg_pcd_ep_t *ep = &pcd->in_ep[in_ep_cntr];
+			in_ep_cntr++;
+			/**
+			 * @todo NGS: Add direction to EP, based on contents
+			 * of HWCFG1.  Need a copy of HWCFG1 in pcd structure?
+			 * sprintf(";r
+			 */
+			dwc_otg_pcd_init_ep(pcd, ep, 1 /* IN */ , i);
+
+			DWC_CIRCLEQ_INIT(&ep->queue);
+		}
+		hwcfg1 >>= 2;
+	}
+
+	out_ep_cntr = 0;
+	hwcfg1 = (GET_CORE_IF(pcd))->hwcfg1.d32 >> 2;
+	for (i = 1; out_ep_cntr < num_out_eps; i++) {
+		if ((hwcfg1 & 0x1) == 0) {
+			dwc_otg_pcd_ep_t *ep = &pcd->out_ep[out_ep_cntr];
+			out_ep_cntr++;
+			/**
+			 * @todo NGS: Add direction to EP, based on contents
+			 * of HWCFG1.  Need a copy of HWCFG1 in pcd structure?
+			 * sprintf(";r
+			 */
+			dwc_otg_pcd_init_ep(pcd, ep, 0 /* OUT */ , i);
+			DWC_CIRCLEQ_INIT(&ep->queue);
+		}
+		hwcfg1 >>= 2;
+	}
+
+	pcd->ep0state = EP0_DISCONNECT;
+	pcd->ep0.dwc_ep.maxpacket = MAX_EP0_SIZE;
+	pcd->ep0.dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
+}
+
+/**
+ * This function is called when the SRP timer expires. The SRP should
+ * complete within 6 seconds.
+ */
+static void srp_timeout(void *ptr)
+{
+	gotgctl_data_t gotgctl;
+	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
+	volatile uint32_t *addr = &core_if->core_global_regs->gotgctl;
+
+	gotgctl.d32 = DWC_READ_REG32(addr);
+
+	core_if->srp_timer_started = 0;
+
+	if (core_if->adp_enable) {
+		if (gotgctl.b.bsesvld == 0) {
+			gpwrdn_data_t gpwrdn = {.d32 = 0 };
+			DWC_PRINTF("SRP Timeout BSESSVLD = 0\n");
+			/* Power off the core */
+			if (core_if->power_down == 2) {
+				gpwrdn.b.pwrdnswtch = 1;
+				DWC_MODIFY_REG32(&core_if->
+						 core_global_regs->gpwrdn,
+						 gpwrdn.d32, 0);
+			}
+
+			gpwrdn.d32 = 0;
+			gpwrdn.b.pmuintsel = 1;
+			gpwrdn.b.pmuactv = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
+					 gpwrdn.d32);
+			dwc_otg_adp_probe_start(core_if);
+		} else {
+			DWC_PRINTF("SRP Timeout BSESSVLD = 1\n");
+			core_if->op_state = B_PERIPHERAL;
+			dwc_otg_core_init(core_if);
+			dwc_otg_enable_global_interrupts(core_if);
+			cil_pcd_start(core_if);
+		}
+	}
+
+	if ((core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS) &&
+	    (core_if->core_params->i2c_enable)) {
+		DWC_PRINTF("SRP Timeout\n");
+
+		if ((core_if->srp_success) && (gotgctl.b.bsesvld)) {
+			if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+				core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+			}
+
+			/* Clear Session Request */
+			gotgctl.d32 = 0;
+			gotgctl.b.sesreq = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gotgctl,
+					 gotgctl.d32, 0);
+
+			core_if->srp_success = 0;
+		} else {
+			__DWC_ERROR("Device not connected/responding\n");
+			gotgctl.b.sesreq = 0;
+			DWC_WRITE_REG32(addr, gotgctl.d32);
+		}
+	} else if (gotgctl.b.sesreq) {
+		DWC_PRINTF("SRP Timeout\n");
+
+		__DWC_ERROR("Device not connected/responding\n");
+		gotgctl.b.sesreq = 0;
+		DWC_WRITE_REG32(addr, gotgctl.d32);
+	} else {
+		DWC_PRINTF(" SRP GOTGCTL=%0x\n", gotgctl.d32);
+	}
+}
+
+/**
+ * Tasklet
+ *
+ */
+extern void start_next_request(dwc_otg_pcd_ep_t * ep);
+
+static void start_xfer_tasklet_func(void *data)
+{
+	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) data;
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+	int i;
+	depctl_data_t diepctl;
+
+	DWC_DEBUGPL(DBG_PCDV, "Start xfer tasklet\n");
+
+	diepctl.d32 = DWC_READ_REG32(&core_if->dev_if->in_ep_regs[0]->diepctl);
+
+	if (pcd->ep0.queue_sof) {
+		pcd->ep0.queue_sof = 0;
+		start_next_request(&pcd->ep0);
+		// break;
+	}
+
+	for (i = 0; i < core_if->dev_if->num_in_eps; i++) {
+		depctl_data_t diepctl;
+		diepctl.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->diepctl);
+
+		if (pcd->in_ep[i].queue_sof) {
+			pcd->in_ep[i].queue_sof = 0;
+			start_next_request(&pcd->in_ep[i]);
+			// break;
+		}
+	}
+
+	return;
+}
+
+/**
+ * This function initialized the PCD portion of the driver.
+ *
+ */
+dwc_otg_pcd_t *dwc_otg_pcd_init(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_pcd_t *pcd = NULL;
+	dwc_otg_dev_if_t *dev_if;
+	int i;
+
+	/*
+	 * Allocate PCD structure
+	 */
+	pcd = DWC_ALLOC(sizeof(dwc_otg_pcd_t));
+
+	if (pcd == NULL) {
+		return NULL;
+	}
+
+#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK))
+	DWC_SPINLOCK_ALLOC_LINUX_DEBUG(pcd->lock);
+#else
+	pcd->lock = DWC_SPINLOCK_ALLOC();
+#endif
+        DWC_DEBUGPL(DBG_HCDV, "Init of PCD %p given core_if %p\n",
+                    pcd, core_if);//GRAYG
+	if (!pcd->lock) {
+		DWC_ERROR("Could not allocate lock for pcd");
+		DWC_FREE(pcd);
+		return NULL;
+	}
+	/* Set core_if's lock pointer to hcd->lock */
+	core_if->lock = pcd->lock;
+	pcd->core_if = core_if;
+
+	dev_if = core_if->dev_if;
+	dev_if->isoc_ep = NULL;
+
+	if (core_if->hwcfg4.b.ded_fifo_en) {
+		DWC_PRINTF("Dedicated Tx FIFOs mode\n");
+	} else {
+		DWC_PRINTF("Shared Tx FIFO mode\n");
+	}
+
+	/*
+	 * Initialized the Core for Device mode here if there is nod ADP support.
+	 * Otherwise it will be done later in dwc_otg_adp_start routine.
+	 */
+	if (dwc_otg_is_device_mode(core_if) /*&& !core_if->adp_enable*/) {
+		dwc_otg_core_dev_init(core_if);
+	}
+
+	/*
+	 * Register the PCD Callbacks.
+	 */
+	dwc_otg_cil_register_pcd_callbacks(core_if, &pcd_callbacks, pcd);
+
+	/*
+	 * Initialize the DMA buffer for SETUP packets
+	 */
+	if (GET_CORE_IF(pcd)->dma_enable) {
+		pcd->setup_pkt =
+		    DWC_DMA_ALLOC(sizeof(*pcd->setup_pkt) * 5,
+				  &pcd->setup_pkt_dma_handle);
+		if (pcd->setup_pkt == NULL) {
+			DWC_FREE(pcd);
+			return NULL;
+		}
+
+		pcd->status_buf =
+		    DWC_DMA_ALLOC(sizeof(uint16_t),
+				  &pcd->status_buf_dma_handle);
+		if (pcd->status_buf == NULL) {
+			DWC_DMA_FREE(sizeof(*pcd->setup_pkt) * 5,
+				     pcd->setup_pkt, pcd->setup_pkt_dma_handle);
+			DWC_FREE(pcd);
+			return NULL;
+		}
+
+		if (GET_CORE_IF(pcd)->dma_desc_enable) {
+			dev_if->setup_desc_addr[0] =
+			    dwc_otg_ep_alloc_desc_chain
+			    (&dev_if->dma_setup_desc_addr[0], 1);
+			dev_if->setup_desc_addr[1] =
+			    dwc_otg_ep_alloc_desc_chain
+			    (&dev_if->dma_setup_desc_addr[1], 1);
+			dev_if->in_desc_addr =
+			    dwc_otg_ep_alloc_desc_chain
+			    (&dev_if->dma_in_desc_addr, 1);
+			dev_if->out_desc_addr =
+			    dwc_otg_ep_alloc_desc_chain
+			    (&dev_if->dma_out_desc_addr, 1);
+			pcd->data_terminated = 0;
+
+			if (dev_if->setup_desc_addr[0] == 0
+			    || dev_if->setup_desc_addr[1] == 0
+			    || dev_if->in_desc_addr == 0
+			    || dev_if->out_desc_addr == 0) {
+
+				if (dev_if->out_desc_addr)
+					dwc_otg_ep_free_desc_chain
+					    (dev_if->out_desc_addr,
+					     dev_if->dma_out_desc_addr, 1);
+				if (dev_if->in_desc_addr)
+					dwc_otg_ep_free_desc_chain
+					    (dev_if->in_desc_addr,
+					     dev_if->dma_in_desc_addr, 1);
+				if (dev_if->setup_desc_addr[1])
+					dwc_otg_ep_free_desc_chain
+					    (dev_if->setup_desc_addr[1],
+					     dev_if->dma_setup_desc_addr[1], 1);
+				if (dev_if->setup_desc_addr[0])
+					dwc_otg_ep_free_desc_chain
+					    (dev_if->setup_desc_addr[0],
+					     dev_if->dma_setup_desc_addr[0], 1);
+
+				DWC_DMA_FREE(sizeof(*pcd->setup_pkt) * 5,
+					     pcd->setup_pkt,
+					     pcd->setup_pkt_dma_handle);
+				DWC_DMA_FREE(sizeof(*pcd->status_buf),
+					     pcd->status_buf,
+					     pcd->status_buf_dma_handle);
+
+				DWC_FREE(pcd);
+
+				return NULL;
+			}
+		}
+	} else {
+		pcd->setup_pkt = DWC_ALLOC(sizeof(*pcd->setup_pkt) * 5);
+		if (pcd->setup_pkt == NULL) {
+			DWC_FREE(pcd);
+			return NULL;
+		}
+
+		pcd->status_buf = DWC_ALLOC(sizeof(uint16_t));
+		if (pcd->status_buf == NULL) {
+			DWC_FREE(pcd->setup_pkt);
+			DWC_FREE(pcd);
+			return NULL;
+		}
+	}
+
+	dwc_otg_pcd_reinit(pcd);
+
+	/* Allocate the cfi object for the PCD */
+#ifdef DWC_UTE_CFI
+	pcd->cfi = DWC_ALLOC(sizeof(cfiobject_t));
+	if (NULL == pcd->cfi)
+		goto fail;
+	if (init_cfi(pcd->cfi)) {
+		CFI_INFO("%s: Failed to init the CFI object\n", __func__);
+		goto fail;
+	}
+#endif
+
+	/* Initialize tasklets */
+	pcd->start_xfer_tasklet = DWC_TASK_ALLOC("xfer_tasklet",
+						 start_xfer_tasklet_func, pcd);
+	pcd->test_mode_tasklet = DWC_TASK_ALLOC("test_mode_tasklet",
+						do_test_mode, pcd);
+
+	/* Initialize SRP timer */
+	core_if->srp_timer = DWC_TIMER_ALLOC("SRP TIMER", srp_timeout, core_if);
+
+	if (core_if->core_params->dev_out_nak) {
+		/**
+		* Initialize xfer timeout timer. Implemented for
+		* 2.93a feature "Device DDMA OUT NAK Enhancement"
+		*/
+		for(i = 0; i < MAX_EPS_CHANNELS; i++) {
+			pcd->core_if->ep_xfer_timer[i] =
+				DWC_TIMER_ALLOC("ep timer", ep_xfer_timeout,
+				&pcd->core_if->ep_xfer_info[i]);
+		}
+	}
+
+	return pcd;
+#ifdef DWC_UTE_CFI
+fail:
+#endif
+	if (pcd->setup_pkt)
+		DWC_FREE(pcd->setup_pkt);
+	if (pcd->status_buf)
+		DWC_FREE(pcd->status_buf);
+#ifdef DWC_UTE_CFI
+	if (pcd->cfi)
+		DWC_FREE(pcd->cfi);
+#endif
+	if (pcd)
+		DWC_FREE(pcd);
+	return NULL;
+
+}
+
+/**
+ * Remove PCD specific data
+ */
+void dwc_otg_pcd_remove(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+	int i;
+	if (pcd->core_if->core_params->dev_out_nak) {
+		for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+			DWC_TIMER_CANCEL(pcd->core_if->ep_xfer_timer[i]);
+			pcd->core_if->ep_xfer_info[i].state = 0;
+		}
+	}
+
+	if (GET_CORE_IF(pcd)->dma_enable) {
+		DWC_DMA_FREE(sizeof(*pcd->setup_pkt) * 5, pcd->setup_pkt,
+			     pcd->setup_pkt_dma_handle);
+		DWC_DMA_FREE(sizeof(uint16_t), pcd->status_buf,
+			     pcd->status_buf_dma_handle);
+		if (GET_CORE_IF(pcd)->dma_desc_enable) {
+			dwc_otg_ep_free_desc_chain(dev_if->setup_desc_addr[0],
+						   dev_if->dma_setup_desc_addr
+						   [0], 1);
+			dwc_otg_ep_free_desc_chain(dev_if->setup_desc_addr[1],
+						   dev_if->dma_setup_desc_addr
+						   [1], 1);
+			dwc_otg_ep_free_desc_chain(dev_if->in_desc_addr,
+						   dev_if->dma_in_desc_addr, 1);
+			dwc_otg_ep_free_desc_chain(dev_if->out_desc_addr,
+						   dev_if->dma_out_desc_addr,
+						   1);
+		}
+	} else {
+		DWC_FREE(pcd->setup_pkt);
+		DWC_FREE(pcd->status_buf);
+	}
+	DWC_SPINLOCK_FREE(pcd->lock);
+	/* Set core_if's lock pointer to NULL */
+	pcd->core_if->lock = NULL;
+
+	DWC_TASK_FREE(pcd->start_xfer_tasklet);
+	DWC_TASK_FREE(pcd->test_mode_tasklet);
+	if (pcd->core_if->core_params->dev_out_nak) {
+		for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+			if (pcd->core_if->ep_xfer_timer[i]) {
+					DWC_TIMER_FREE(pcd->core_if->ep_xfer_timer[i]);
+			}
+		}
+	}
+
+/* Release the CFI object's dynamic memory */
+#ifdef DWC_UTE_CFI
+	if (pcd->cfi->ops.release) {
+		pcd->cfi->ops.release(pcd->cfi);
+	}
+#endif
+
+	DWC_FREE(pcd);
+}
+
+/**
+ * Returns whether registered pcd is dual speed or not
+ */
+uint32_t dwc_otg_pcd_is_dualspeed(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+	if ((core_if->core_params->speed == DWC_SPEED_PARAM_FULL) ||
+	    ((core_if->hwcfg2.b.hs_phy_type == 2) &&
+	     (core_if->hwcfg2.b.fs_phy_type == 1) &&
+	     (core_if->core_params->ulpi_fs_ls))) {
+		return 0;
+	}
+
+	return 1;
+}
+
+/**
+ * Returns whether registered pcd is OTG capable or not
+ */
+uint32_t dwc_otg_pcd_is_otg(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	gusbcfg_data_t usbcfg = {.d32 = 0 };
+
+	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
+	if (!usbcfg.b.srpcap || !usbcfg.b.hnpcap) {
+		return 0;
+	}
+
+	return 1;
+}
+
+/**
+ * This function assigns periodic Tx FIFO to an periodic EP
+ * in shared Tx FIFO mode
+ */
+static uint32_t assign_tx_fifo(dwc_otg_core_if_t * core_if)
+{
+	uint32_t TxMsk = 1;
+	int i;
+
+	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; ++i) {
+		if ((TxMsk & core_if->tx_msk) == 0) {
+			core_if->tx_msk |= TxMsk;
+			return i + 1;
+		}
+		TxMsk <<= 1;
+	}
+	return 0;
+}
+
+/**
+ * This function assigns periodic Tx FIFO to an periodic EP
+ * in shared Tx FIFO mode
+ */
+static uint32_t assign_perio_tx_fifo(dwc_otg_core_if_t * core_if)
+{
+	uint32_t PerTxMsk = 1;
+	int i;
+	for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; ++i) {
+		if ((PerTxMsk & core_if->p_tx_msk) == 0) {
+			core_if->p_tx_msk |= PerTxMsk;
+			return i + 1;
+		}
+		PerTxMsk <<= 1;
+	}
+	return 0;
+}
+
+/**
+ * This function releases periodic Tx FIFO
+ * in shared Tx FIFO mode
+ */
+static void release_perio_tx_fifo(dwc_otg_core_if_t * core_if,
+				  uint32_t fifo_num)
+{
+	core_if->p_tx_msk =
+	    (core_if->p_tx_msk & (1 << (fifo_num - 1))) ^ core_if->p_tx_msk;
+}
+
+/**
+ * This function releases periodic Tx FIFO
+ * in shared Tx FIFO mode
+ */
+static void release_tx_fifo(dwc_otg_core_if_t * core_if, uint32_t fifo_num)
+{
+	core_if->tx_msk =
+	    (core_if->tx_msk & (1 << (fifo_num - 1))) ^ core_if->tx_msk;
+}
+
+/**
+ * This function is being called from gadget
+ * to enable PCD endpoint.
+ */
+int dwc_otg_pcd_ep_enable(dwc_otg_pcd_t * pcd,
+			  const uint8_t * ep_desc, void *usb_ep)
+{
+	int num, dir;
+	dwc_otg_pcd_ep_t *ep = NULL;
+	const usb_endpoint_descriptor_t *desc;
+	dwc_irqflags_t flags;
+	fifosize_data_t dptxfsiz = {.d32 = 0 };
+	gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
+	gdfifocfg_data_t gdfifocfgbase = {.d32 = 0 };
+	int retval = 0;
+	int i, epcount;
+
+	desc = (const usb_endpoint_descriptor_t *)ep_desc;
+
+	if (!desc) {
+		pcd->ep0.priv = usb_ep;
+		ep = &pcd->ep0;
+		retval = -DWC_E_INVALID;
+		goto out;
+	}
+
+	num = UE_GET_ADDR(desc->bEndpointAddress);
+	dir = UE_GET_DIR(desc->bEndpointAddress);
+
+	if (!desc->wMaxPacketSize) {
+		DWC_WARN("bad maxpacketsize\n");
+		retval = -DWC_E_INVALID;
+		goto out;
+	}
+
+	if (dir == UE_DIR_IN) {
+		epcount = pcd->core_if->dev_if->num_in_eps;
+		for (i = 0; i < epcount; i++) {
+			if (num == pcd->in_ep[i].dwc_ep.num) {
+				ep = &pcd->in_ep[i];
+				break;
+			}
+		}
+	} else {
+		epcount = pcd->core_if->dev_if->num_out_eps;
+		for (i = 0; i < epcount; i++) {
+			if (num == pcd->out_ep[i].dwc_ep.num) {
+				ep = &pcd->out_ep[i];
+				break;
+			}
+		}
+	}
+
+	if (!ep) {
+		DWC_WARN("bad address\n");
+		retval = -DWC_E_INVALID;
+		goto out;
+	}
+
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+	ep->desc = desc;
+	ep->priv = usb_ep;
+
+	/*
+	 * Activate the EP
+	 */
+	ep->stopped = 0;
+
+	ep->dwc_ep.is_in = (dir == UE_DIR_IN);
+	ep->dwc_ep.maxpacket = UGETW(desc->wMaxPacketSize);
+
+	ep->dwc_ep.type = desc->bmAttributes & UE_XFERTYPE;
+
+	if (ep->dwc_ep.is_in) {
+		if (!GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
+			ep->dwc_ep.tx_fifo_num = 0;
+
+			if (ep->dwc_ep.type == UE_ISOCHRONOUS) {
+				/*
+				 * if ISOC EP then assign a Periodic Tx FIFO.
+				 */
+				ep->dwc_ep.tx_fifo_num =
+				    assign_perio_tx_fifo(GET_CORE_IF(pcd));
+			}
+		} else {
+			/*
+			 * if Dedicated FIFOs mode is on then assign a Tx FIFO.
+			 */
+			ep->dwc_ep.tx_fifo_num =
+			    assign_tx_fifo(GET_CORE_IF(pcd));
+		}
+
+		/* Calculating EP info controller base address */
+		if (ep->dwc_ep.tx_fifo_num
+		    && GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
+			gdfifocfg.d32 =
+			    DWC_READ_REG32(&GET_CORE_IF(pcd)->
+					   core_global_regs->gdfifocfg);
+			gdfifocfgbase.d32 = gdfifocfg.d32 >> 16;
+			dptxfsiz.d32 =
+			    (DWC_READ_REG32
+			     (&GET_CORE_IF(pcd)->core_global_regs->
+			      dtxfsiz[ep->dwc_ep.tx_fifo_num - 1]) >> 16);
+			gdfifocfg.b.epinfobase =
+			    gdfifocfgbase.d32 + dptxfsiz.d32;
+			if (GET_CORE_IF(pcd)->snpsid <= OTG_CORE_REV_2_94a) {
+				DWC_WRITE_REG32(&GET_CORE_IF(pcd)->
+						core_global_regs->gdfifocfg,
+						gdfifocfg.d32);
+			}
+		}
+	}
+	/* Set initial data PID. */
+	if (ep->dwc_ep.type == UE_BULK) {
+		ep->dwc_ep.data_pid_start = 0;
+	}
+
+	/* Alloc DMA Descriptors */
+	if (GET_CORE_IF(pcd)->dma_desc_enable) {
+#ifndef DWC_UTE_PER_IO
+		if (ep->dwc_ep.type != UE_ISOCHRONOUS) {
+#endif
+			ep->dwc_ep.desc_addr =
+			    dwc_otg_ep_alloc_desc_chain(&ep->
+							dwc_ep.dma_desc_addr,
+							MAX_DMA_DESC_CNT);
+			if (!ep->dwc_ep.desc_addr) {
+				DWC_WARN("%s, can't allocate DMA descriptor\n",
+					 __func__);
+				retval = -DWC_E_SHUTDOWN;
+				DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+				goto out;
+			}
+#ifndef DWC_UTE_PER_IO
+		}
+#endif
+	}
+
+	DWC_DEBUGPL(DBG_PCD, "Activate %s: type=%d, mps=%d desc=%p\n",
+		    (ep->dwc_ep.is_in ? "IN" : "OUT"),
+		    ep->dwc_ep.type, ep->dwc_ep.maxpacket, ep->desc);
+#ifdef DWC_UTE_PER_IO
+	ep->dwc_ep.xiso_bInterval = 1 << (ep->desc->bInterval - 1);
+#endif
+	if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+		ep->dwc_ep.bInterval = 1 << (ep->desc->bInterval - 1);
+		ep->dwc_ep.frame_num = 0xFFFFFFFF;
+	}
+
+	dwc_otg_ep_activate(GET_CORE_IF(pcd), &ep->dwc_ep);
+
+#ifdef DWC_UTE_CFI
+	if (pcd->cfi->ops.ep_enable) {
+		pcd->cfi->ops.ep_enable(pcd->cfi, pcd, ep);
+	}
+#endif
+
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+out:
+	return retval;
+}
+
+/**
+ * This function is being called from gadget
+ * to disable PCD endpoint.
+ */
+int dwc_otg_pcd_ep_disable(dwc_otg_pcd_t * pcd, void *ep_handle)
+{
+	dwc_otg_pcd_ep_t *ep;
+	dwc_irqflags_t flags;
+	dwc_otg_dev_dma_desc_t *desc_addr;
+	dwc_dma_t dma_desc_addr;
+	gdfifocfg_data_t gdfifocfgbase = {.d32 = 0 };
+	gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
+	fifosize_data_t dptxfsiz = {.d32 = 0 };
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+
+	if (!ep || !ep->desc) {
+		DWC_DEBUGPL(DBG_PCD, "bad ep address\n");
+		return -DWC_E_INVALID;
+	}
+
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+	dwc_otg_request_nuke(ep);
+
+	dwc_otg_ep_deactivate(GET_CORE_IF(pcd), &ep->dwc_ep);
+	if (pcd->core_if->core_params->dev_out_nak) {
+		DWC_TIMER_CANCEL(pcd->core_if->ep_xfer_timer[ep->dwc_ep.num]);
+		pcd->core_if->ep_xfer_info[ep->dwc_ep.num].state = 0;
+	}
+	ep->desc = NULL;
+	ep->stopped = 1;
+
+	gdfifocfg.d32 =
+	    DWC_READ_REG32(&GET_CORE_IF(pcd)->core_global_regs->gdfifocfg);
+	gdfifocfgbase.d32 = gdfifocfg.d32 >> 16;
+
+	if (ep->dwc_ep.is_in) {
+		if (GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
+			/* Flush the Tx FIFO */
+			dwc_otg_flush_tx_fifo(GET_CORE_IF(pcd),
+					      ep->dwc_ep.tx_fifo_num);
+		}
+		release_perio_tx_fifo(GET_CORE_IF(pcd), ep->dwc_ep.tx_fifo_num);
+		release_tx_fifo(GET_CORE_IF(pcd), ep->dwc_ep.tx_fifo_num);
+		if (GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
+			/* Decreasing EPinfo Base Addr */
+			dptxfsiz.d32 =
+			    (DWC_READ_REG32
+			     (&GET_CORE_IF(pcd)->
+				core_global_regs->dtxfsiz[ep->dwc_ep.tx_fifo_num-1]) >> 16);
+			gdfifocfg.b.epinfobase = gdfifocfgbase.d32 - dptxfsiz.d32;
+			if (GET_CORE_IF(pcd)->snpsid <= OTG_CORE_REV_2_94a) {
+				DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gdfifocfg,
+					gdfifocfg.d32);
+			}
+		}
+	}
+
+	/* Free DMA Descriptors */
+	if (GET_CORE_IF(pcd)->dma_desc_enable) {
+		if (ep->dwc_ep.type != UE_ISOCHRONOUS) {
+			desc_addr = ep->dwc_ep.desc_addr;
+			dma_desc_addr = ep->dwc_ep.dma_desc_addr;
+
+			/* Cannot call dma_free_coherent() with IRQs disabled */
+			DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+			dwc_otg_ep_free_desc_chain(desc_addr, dma_desc_addr,
+						   MAX_DMA_DESC_CNT);
+
+			goto out_unlocked;
+		}
+	}
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+out_unlocked:
+	DWC_DEBUGPL(DBG_PCD, "%d %s disabled\n", ep->dwc_ep.num,
+		    ep->dwc_ep.is_in ? "IN" : "OUT");
+	return 0;
+
+}
+
+/******************************************************************************/
+#ifdef DWC_UTE_PER_IO
+
+/**
+ * Free the request and its extended parts
+ *
+ */
+void dwc_pcd_xiso_ereq_free(dwc_otg_pcd_ep_t * ep, dwc_otg_pcd_request_t * req)
+{
+	DWC_FREE(req->ext_req.per_io_frame_descs);
+	DWC_FREE(req);
+}
+
+/**
+ * Start the next request in the endpoint's queue.
+ *
+ */
+int dwc_otg_pcd_xiso_start_next_request(dwc_otg_pcd_t * pcd,
+					dwc_otg_pcd_ep_t * ep)
+{
+	int i;
+	dwc_otg_pcd_request_t *req = NULL;
+	dwc_ep_t *dwcep = NULL;
+	struct dwc_iso_xreq_port *ereq = NULL;
+	struct dwc_iso_pkt_desc_port *ddesc_iso;
+	uint16_t nat;
+	depctl_data_t diepctl;
+
+	dwcep = &ep->dwc_ep;
+
+	if (dwcep->xiso_active_xfers > 0) {
+#if 0	//Disable this to decrease s/w overhead that is crucial for Isoc transfers
+		DWC_WARN("There are currently active transfers for EP%d \
+				(active=%d; queued=%d)", dwcep->num, dwcep->xiso_active_xfers,
+				dwcep->xiso_queued_xfers);
+#endif
+		return 0;
+	}
+
+	nat = UGETW(ep->desc->wMaxPacketSize);
+	nat = (nat >> 11) & 0x03;
+
+	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+		req = DWC_CIRCLEQ_FIRST(&ep->queue);
+		ereq = &req->ext_req;
+		ep->stopped = 0;
+
+		/* Get the frame number */
+		dwcep->xiso_frame_num =
+		    dwc_otg_get_frame_number(GET_CORE_IF(pcd));
+		DWC_DEBUG("FRM_NUM=%d", dwcep->xiso_frame_num);
+
+		ddesc_iso = ereq->per_io_frame_descs;
+
+		if (dwcep->is_in) {
+			/* Setup DMA Descriptor chain for IN Isoc request */
+			for (i = 0; i < ereq->pio_pkt_count; i++) {
+				//if ((i % (nat + 1)) == 0)
+				if ( i > 0 )
+					dwcep->xiso_frame_num =
+					    (dwcep->xiso_bInterval +
+										dwcep->xiso_frame_num) & 0x3FFF;
+				dwcep->desc_addr[i].buf =
+				    req->dma + ddesc_iso[i].offset;
+				dwcep->desc_addr[i].status.b_iso_in.txbytes =
+				    ddesc_iso[i].length;
+				dwcep->desc_addr[i].status.b_iso_in.framenum =
+				    dwcep->xiso_frame_num;
+				dwcep->desc_addr[i].status.b_iso_in.bs =
+				    BS_HOST_READY;
+				dwcep->desc_addr[i].status.b_iso_in.txsts = 0;
+				dwcep->desc_addr[i].status.b_iso_in.sp =
+				    (ddesc_iso[i].length %
+				     dwcep->maxpacket) ? 1 : 0;
+				dwcep->desc_addr[i].status.b_iso_in.ioc = 0;
+				dwcep->desc_addr[i].status.b_iso_in.pid = nat + 1;
+				dwcep->desc_addr[i].status.b_iso_in.l = 0;
+
+				/* Process the last descriptor */
+				if (i == ereq->pio_pkt_count - 1) {
+					dwcep->desc_addr[i].status.b_iso_in.ioc = 1;
+					dwcep->desc_addr[i].status.b_iso_in.l = 1;
+				}
+			}
+
+			/* Setup and start the transfer for this endpoint */
+			dwcep->xiso_active_xfers++;
+			DWC_WRITE_REG32(&GET_CORE_IF(pcd)->dev_if->
+					in_ep_regs[dwcep->num]->diepdma,
+					dwcep->dma_desc_addr);
+			diepctl.d32 = 0;
+			diepctl.b.epena = 1;
+			diepctl.b.cnak = 1;
+			DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->dev_if->
+					 in_ep_regs[dwcep->num]->diepctl, 0,
+					 diepctl.d32);
+		} else {
+			/* Setup DMA Descriptor chain for OUT Isoc request */
+			for (i = 0; i < ereq->pio_pkt_count; i++) {
+				//if ((i % (nat + 1)) == 0)
+				dwcep->xiso_frame_num = (dwcep->xiso_bInterval +
+										dwcep->xiso_frame_num) & 0x3FFF;
+				dwcep->desc_addr[i].buf =
+				    req->dma + ddesc_iso[i].offset;
+				dwcep->desc_addr[i].status.b_iso_out.rxbytes =
+				    ddesc_iso[i].length;
+				dwcep->desc_addr[i].status.b_iso_out.framenum =
+				    dwcep->xiso_frame_num;
+				dwcep->desc_addr[i].status.b_iso_out.bs =
+				    BS_HOST_READY;
+				dwcep->desc_addr[i].status.b_iso_out.rxsts = 0;
+				dwcep->desc_addr[i].status.b_iso_out.sp =
+				    (ddesc_iso[i].length %
+				     dwcep->maxpacket) ? 1 : 0;
+				dwcep->desc_addr[i].status.b_iso_out.ioc = 0;
+				dwcep->desc_addr[i].status.b_iso_out.pid = nat + 1;
+				dwcep->desc_addr[i].status.b_iso_out.l = 0;
+
+				/* Process the last descriptor */
+				if (i == ereq->pio_pkt_count - 1) {
+					dwcep->desc_addr[i].status.b_iso_out.ioc = 1;
+					dwcep->desc_addr[i].status.b_iso_out.l = 1;
+				}
+			}
+
+			/* Setup and start the transfer for this endpoint */
+			dwcep->xiso_active_xfers++;
+			DWC_WRITE_REG32(&GET_CORE_IF(pcd)->
+					dev_if->out_ep_regs[dwcep->num]->
+					doepdma, dwcep->dma_desc_addr);
+			diepctl.d32 = 0;
+			diepctl.b.epena = 1;
+			diepctl.b.cnak = 1;
+			DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->
+					 dev_if->out_ep_regs[dwcep->num]->
+					 doepctl, 0, diepctl.d32);
+		}
+
+	} else {
+		ep->stopped = 1;
+	}
+
+	return 0;
+}
+
+/**
+ *	- Remove the request from the queue
+ */
+void complete_xiso_ep(dwc_otg_pcd_ep_t * ep)
+{
+	dwc_otg_pcd_request_t *req = NULL;
+	struct dwc_iso_xreq_port *ereq = NULL;
+	struct dwc_iso_pkt_desc_port *ddesc_iso = NULL;
+	dwc_ep_t *dwcep = NULL;
+	int i;
+
+	//DWC_DEBUG();
+	dwcep = &ep->dwc_ep;
+
+	/* Get the first pending request from the queue */
+	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+		req = DWC_CIRCLEQ_FIRST(&ep->queue);
+		if (!req) {
+			DWC_PRINTF("complete_ep 0x%p, req = NULL!\n", ep);
+			return;
+		}
+		dwcep->xiso_active_xfers--;
+		dwcep->xiso_queued_xfers--;
+		/* Remove this request from the queue */
+		DWC_CIRCLEQ_REMOVE_INIT(&ep->queue, req, queue_entry);
+	} else {
+		DWC_PRINTF("complete_ep 0x%p, ep->queue empty!\n", ep);
+		return;
+	}
+
+	ep->stopped = 1;
+	ereq = &req->ext_req;
+	ddesc_iso = ereq->per_io_frame_descs;
+
+	if (dwcep->xiso_active_xfers < 0) {
+		DWC_WARN("EP#%d (xiso_active_xfers=%d)", dwcep->num,
+			 dwcep->xiso_active_xfers);
+	}
+
+	/* Fill the Isoc descs of portable extended req from dma descriptors */
+	for (i = 0; i < ereq->pio_pkt_count; i++) {
+		if (dwcep->is_in) {	/* IN endpoints */
+			ddesc_iso[i].actual_length = ddesc_iso[i].length -
+			    dwcep->desc_addr[i].status.b_iso_in.txbytes;
+			ddesc_iso[i].status =
+			    dwcep->desc_addr[i].status.b_iso_in.txsts;
+		} else {	/* OUT endpoints */
+			ddesc_iso[i].actual_length = ddesc_iso[i].length -
+			    dwcep->desc_addr[i].status.b_iso_out.rxbytes;
+			ddesc_iso[i].status =
+			    dwcep->desc_addr[i].status.b_iso_out.rxsts;
+		}
+	}
+
+	DWC_SPINUNLOCK(ep->pcd->lock);
+
+	/* Call the completion function in the non-portable logic */
+	ep->pcd->fops->xisoc_complete(ep->pcd, ep->priv, req->priv, 0,
+				      &req->ext_req);
+
+	DWC_SPINLOCK(ep->pcd->lock);
+
+	/* Free the request - specific freeing needed for extended request object */
+	dwc_pcd_xiso_ereq_free(ep, req);
+
+	/* Start the next request */
+	dwc_otg_pcd_xiso_start_next_request(ep->pcd, ep);
+
+	return;
+}
+
+/**
+ * Create and initialize the Isoc pkt descriptors of the extended request.
+ *
+ */
+static int dwc_otg_pcd_xiso_create_pkt_descs(dwc_otg_pcd_request_t * req,
+					     void *ereq_nonport,
+					     int atomic_alloc)
+{
+	struct dwc_iso_xreq_port *ereq = NULL;
+	struct dwc_iso_xreq_port *req_mapped = NULL;
+	struct dwc_iso_pkt_desc_port *ipds = NULL;	/* To be created in this function */
+	uint32_t pkt_count;
+	int i;
+
+	ereq = &req->ext_req;
+	req_mapped = (struct dwc_iso_xreq_port *)ereq_nonport;
+	pkt_count = req_mapped->pio_pkt_count;
+
+	/* Create the isoc descs */
+	if (atomic_alloc) {
+		ipds = DWC_ALLOC_ATOMIC(sizeof(*ipds) * pkt_count);
+	} else {
+		ipds = DWC_ALLOC(sizeof(*ipds) * pkt_count);
+	}
+
+	if (!ipds) {
+		DWC_ERROR("Failed to allocate isoc descriptors");
+		return -DWC_E_NO_MEMORY;
+	}
+
+	/* Initialize the extended request fields */
+	ereq->per_io_frame_descs = ipds;
+	ereq->error_count = 0;
+	ereq->pio_alloc_pkt_count = pkt_count;
+	ereq->pio_pkt_count = pkt_count;
+	ereq->tr_sub_flags = req_mapped->tr_sub_flags;
+
+	/* Init the Isoc descriptors */
+	for (i = 0; i < pkt_count; i++) {
+		ipds[i].length = req_mapped->per_io_frame_descs[i].length;
+		ipds[i].offset = req_mapped->per_io_frame_descs[i].offset;
+		ipds[i].status = req_mapped->per_io_frame_descs[i].status;	/* 0 */
+		ipds[i].actual_length =
+		    req_mapped->per_io_frame_descs[i].actual_length;
+	}
+
+	return 0;
+}
+
+static void prn_ext_request(struct dwc_iso_xreq_port *ereq)
+{
+	struct dwc_iso_pkt_desc_port *xfd = NULL;
+	int i;
+
+	DWC_DEBUG("per_io_frame_descs=%p", ereq->per_io_frame_descs);
+	DWC_DEBUG("tr_sub_flags=%d", ereq->tr_sub_flags);
+	DWC_DEBUG("error_count=%d", ereq->error_count);
+	DWC_DEBUG("pio_alloc_pkt_count=%d", ereq->pio_alloc_pkt_count);
+	DWC_DEBUG("pio_pkt_count=%d", ereq->pio_pkt_count);
+	DWC_DEBUG("res=%d", ereq->res);
+
+	for (i = 0; i < ereq->pio_pkt_count; i++) {
+		xfd = &ereq->per_io_frame_descs[0];
+		DWC_DEBUG("FD #%d", i);
+
+		DWC_DEBUG("xfd->actual_length=%d", xfd->actual_length);
+		DWC_DEBUG("xfd->length=%d", xfd->length);
+		DWC_DEBUG("xfd->offset=%d", xfd->offset);
+		DWC_DEBUG("xfd->status=%d", xfd->status);
+	}
+}
+
+/**
+ *
+ */
+int dwc_otg_pcd_xiso_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
+			      uint8_t * buf, dwc_dma_t dma_buf, uint32_t buflen,
+			      int zero, void *req_handle, int atomic_alloc,
+			      void *ereq_nonport)
+{
+	dwc_otg_pcd_request_t *req = NULL;
+	dwc_otg_pcd_ep_t *ep;
+	dwc_irqflags_t flags;
+	int res;
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+	if (!ep) {
+		DWC_WARN("bad ep\n");
+		return -DWC_E_INVALID;
+	}
+
+	/* We support this extension only for DDMA mode */
+	if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC)
+		if (!GET_CORE_IF(pcd)->dma_desc_enable)
+			return -DWC_E_INVALID;
+
+	/* Create a dwc_otg_pcd_request_t object */
+	if (atomic_alloc) {
+		req = DWC_ALLOC_ATOMIC(sizeof(*req));
+	} else {
+		req = DWC_ALLOC(sizeof(*req));
+	}
+
+	if (!req) {
+		return -DWC_E_NO_MEMORY;
+	}
+
+	/* Create the Isoc descs for this request which shall be the exact match
+	 * of the structure sent to us from the non-portable logic */
+	res =
+	    dwc_otg_pcd_xiso_create_pkt_descs(req, ereq_nonport, atomic_alloc);
+	if (res) {
+		DWC_WARN("Failed to init the Isoc descriptors");
+		DWC_FREE(req);
+		return res;
+	}
+
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+	DWC_CIRCLEQ_INIT_ENTRY(req, queue_entry);
+	req->buf = buf;
+	req->dma = dma_buf;
+	req->length = buflen;
+	req->sent_zlp = zero;
+	req->priv = req_handle;
+
+	//DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+	ep->dwc_ep.dma_addr = dma_buf;
+	ep->dwc_ep.start_xfer_buff = buf;
+	ep->dwc_ep.xfer_buff = buf;
+	ep->dwc_ep.xfer_len = 0;
+	ep->dwc_ep.xfer_count = 0;
+	ep->dwc_ep.sent_zlp = 0;
+	ep->dwc_ep.total_len = buflen;
+
+	/* Add this request to the tail */
+	DWC_CIRCLEQ_INSERT_TAIL(&ep->queue, req, queue_entry);
+	ep->dwc_ep.xiso_queued_xfers++;
+
+//DWC_DEBUG("CP_0");
+//DWC_DEBUG("req->ext_req.tr_sub_flags=%d", req->ext_req.tr_sub_flags);
+//prn_ext_request((struct dwc_iso_xreq_port *) ereq_nonport);
+//prn_ext_request(&req->ext_req);
+
+	//DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+	/* If the req->status == ASAP  then check if there is any active transfer
+	 * for this endpoint. If no active transfers, then get the first entry
+	 * from the queue and start that transfer
+	 */
+	if (req->ext_req.tr_sub_flags == DWC_EREQ_TF_ASAP) {
+		res = dwc_otg_pcd_xiso_start_next_request(pcd, ep);
+		if (res) {
+			DWC_WARN("Failed to start the next Isoc transfer");
+			DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+			DWC_FREE(req);
+			return res;
+		}
+	}
+
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+	return 0;
+}
+
+#endif
+/* END ifdef DWC_UTE_PER_IO ***************************************************/
+int dwc_otg_pcd_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
+			 uint8_t * buf, dwc_dma_t dma_buf, uint32_t buflen,
+			 int zero, void *req_handle, int atomic_alloc)
+{
+	dwc_irqflags_t flags;
+	dwc_otg_pcd_request_t *req;
+	dwc_otg_pcd_ep_t *ep;
+	uint32_t max_transfer;
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+	if (!ep || (!ep->desc && ep->dwc_ep.num != 0)) {
+		DWC_WARN("bad ep\n");
+		return -DWC_E_INVALID;
+	}
+
+	if (atomic_alloc) {
+		req = DWC_ALLOC_ATOMIC(sizeof(*req));
+	} else {
+		req = DWC_ALLOC(sizeof(*req));
+	}
+
+	if (!req) {
+		return -DWC_E_NO_MEMORY;
+	}
+	DWC_CIRCLEQ_INIT_ENTRY(req, queue_entry);
+	if (!GET_CORE_IF(pcd)->core_params->opt) {
+		if (ep->dwc_ep.num != 0) {
+			DWC_ERROR("queue req %p, len %d buf %p\n",
+				  req_handle, buflen, buf);
+		}
+	}
+
+	req->buf = buf;
+	req->dma = dma_buf;
+	req->length = buflen;
+	req->sent_zlp = zero;
+	req->priv = req_handle;
+	req->dw_align_buf = NULL;
+	if ((dma_buf & 0x3) && GET_CORE_IF(pcd)->dma_enable
+			&& !GET_CORE_IF(pcd)->dma_desc_enable)
+		req->dw_align_buf = DWC_DMA_ALLOC(buflen,
+				 &req->dw_align_buf_dma);
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+	/*
+	 * After adding request to the queue for IN ISOC wait for In Token Received
+	 * when TX FIFO is empty interrupt and for OUT ISOC wait for OUT Token
+	 * Received when EP is disabled interrupt to obtain starting microframe
+	 * (odd/even) start transfer
+	 */
+	if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+		if (req != 0) {
+			depctl_data_t depctl = {.d32 =
+				    DWC_READ_REG32(&pcd->core_if->dev_if->
+						   in_ep_regs[ep->dwc_ep.num]->
+						   diepctl) };
+			++pcd->request_pending;
+
+			DWC_CIRCLEQ_INSERT_TAIL(&ep->queue, req, queue_entry);
+			if (ep->dwc_ep.is_in) {
+				depctl.b.cnak = 1;
+				DWC_WRITE_REG32(&pcd->core_if->dev_if->
+						in_ep_regs[ep->dwc_ep.num]->
+						diepctl, depctl.d32);
+			}
+
+			DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+		}
+		return 0;
+	}
+
+	/*
+	 * For EP0 IN without premature status, zlp is required?
+	 */
+	if (ep->dwc_ep.num == 0 && ep->dwc_ep.is_in) {
+		DWC_DEBUGPL(DBG_PCDV, "%d-OUT ZLP\n", ep->dwc_ep.num);
+		//_req->zero = 1;
+	}
+
+	/* Start the transfer */
+	if (DWC_CIRCLEQ_EMPTY(&ep->queue) && !ep->stopped) {
+		/* EP0 Transfer? */
+		if (ep->dwc_ep.num == 0) {
+			switch (pcd->ep0state) {
+			case EP0_IN_DATA_PHASE:
+				DWC_DEBUGPL(DBG_PCD,
+					    "%s ep0: EP0_IN_DATA_PHASE\n",
+					    __func__);
+				break;
+
+			case EP0_OUT_DATA_PHASE:
+				DWC_DEBUGPL(DBG_PCD,
+					    "%s ep0: EP0_OUT_DATA_PHASE\n",
+					    __func__);
+				if (pcd->request_config) {
+					/* Complete STATUS PHASE */
+					ep->dwc_ep.is_in = 1;
+					pcd->ep0state = EP0_IN_STATUS_PHASE;
+				}
+				break;
+
+			case EP0_IN_STATUS_PHASE:
+				DWC_DEBUGPL(DBG_PCD,
+					    "%s ep0: EP0_IN_STATUS_PHASE\n",
+					    __func__);
+				break;
+
+			default:
+				DWC_DEBUGPL(DBG_ANY, "ep0: odd state %d\n",
+					    pcd->ep0state);
+				DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+				return -DWC_E_SHUTDOWN;
+			}
+
+			ep->dwc_ep.dma_addr = dma_buf;
+			ep->dwc_ep.start_xfer_buff = buf;
+			ep->dwc_ep.xfer_buff = buf;
+			ep->dwc_ep.xfer_len = buflen;
+			ep->dwc_ep.xfer_count = 0;
+			ep->dwc_ep.sent_zlp = 0;
+			ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+			if (zero) {
+				if ((ep->dwc_ep.xfer_len %
+				     ep->dwc_ep.maxpacket == 0)
+				    && (ep->dwc_ep.xfer_len != 0)) {
+					ep->dwc_ep.sent_zlp = 1;
+				}
+
+			}
+
+			dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd),
+						   &ep->dwc_ep);
+		}		// non-ep0 endpoints
+		else {
+#ifdef DWC_UTE_CFI
+			if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+				/* store the request length */
+				ep->dwc_ep.cfi_req_len = buflen;
+				pcd->cfi->ops.build_descriptors(pcd->cfi, pcd,
+								ep, req);
+			} else {
+#endif
+				max_transfer =
+				    GET_CORE_IF(ep->pcd)->core_params->
+				    max_transfer_size;
+
+				/* Setup and start the Transfer */
+				if (req->dw_align_buf){
+					if (ep->dwc_ep.is_in)
+						dwc_memcpy(req->dw_align_buf,
+							   buf, buflen);
+					ep->dwc_ep.dma_addr =
+					    req->dw_align_buf_dma;
+					ep->dwc_ep.start_xfer_buff =
+					    req->dw_align_buf;
+					ep->dwc_ep.xfer_buff =
+					    req->dw_align_buf;
+				} else {
+					ep->dwc_ep.dma_addr = dma_buf;
+					ep->dwc_ep.start_xfer_buff = buf;
+                                        ep->dwc_ep.xfer_buff = buf;
+				}
+				ep->dwc_ep.xfer_len = 0;
+				ep->dwc_ep.xfer_count = 0;
+				ep->dwc_ep.sent_zlp = 0;
+				ep->dwc_ep.total_len = buflen;
+
+				ep->dwc_ep.maxxfer = max_transfer;
+				if (GET_CORE_IF(pcd)->dma_desc_enable) {
+					uint32_t out_max_xfer =
+					    DDMA_MAX_TRANSFER_SIZE -
+					    (DDMA_MAX_TRANSFER_SIZE % 4);
+					if (ep->dwc_ep.is_in) {
+						if (ep->dwc_ep.maxxfer >
+						    DDMA_MAX_TRANSFER_SIZE) {
+							ep->dwc_ep.maxxfer =
+							    DDMA_MAX_TRANSFER_SIZE;
+						}
+					} else {
+						if (ep->dwc_ep.maxxfer >
+						    out_max_xfer) {
+							ep->dwc_ep.maxxfer =
+							    out_max_xfer;
+						}
+					}
+				}
+				if (ep->dwc_ep.maxxfer < ep->dwc_ep.total_len) {
+					ep->dwc_ep.maxxfer -=
+					    (ep->dwc_ep.maxxfer %
+					     ep->dwc_ep.maxpacket);
+				}
+
+				if (zero) {
+					if ((ep->dwc_ep.total_len %
+					     ep->dwc_ep.maxpacket == 0)
+					    && (ep->dwc_ep.total_len != 0)) {
+						ep->dwc_ep.sent_zlp = 1;
+					}
+				}
+#ifdef DWC_UTE_CFI
+			}
+#endif
+			dwc_otg_ep_start_transfer(GET_CORE_IF(pcd),
+						  &ep->dwc_ep);
+		}
+	}
+
+	if (req != 0) {
+		++pcd->request_pending;
+		DWC_CIRCLEQ_INSERT_TAIL(&ep->queue, req, queue_entry);
+		if (ep->dwc_ep.is_in && ep->stopped
+		    && !(GET_CORE_IF(pcd)->dma_enable)) {
+			/** @todo NGS Create a function for this. */
+			diepmsk_data_t diepmsk = {.d32 = 0 };
+			diepmsk.b.intktxfemp = 1;
+			if (GET_CORE_IF(pcd)->multiproc_int_enable) {
+				DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->
+						 dev_if->dev_global_regs->diepeachintmsk
+						 [ep->dwc_ep.num], 0,
+						 diepmsk.d32);
+			} else {
+				DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->
+						 dev_if->dev_global_regs->
+						 diepmsk, 0, diepmsk.d32);
+			}
+
+		}
+	}
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+	return 0;
+}
+
+int dwc_otg_pcd_ep_dequeue(dwc_otg_pcd_t * pcd, void *ep_handle,
+			   void *req_handle)
+{
+	dwc_irqflags_t flags;
+	dwc_otg_pcd_request_t *req;
+	dwc_otg_pcd_ep_t *ep;
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+	if (!ep || (!ep->desc && ep->dwc_ep.num != 0)) {
+		DWC_WARN("bad argument\n");
+		return -DWC_E_INVALID;
+	}
+
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+
+	/* make sure it's actually queued on this endpoint */
+	DWC_CIRCLEQ_FOREACH(req, &ep->queue, queue_entry) {
+		if (req->priv == (void *)req_handle) {
+			break;
+		}
+	}
+
+	if (req->priv != (void *)req_handle) {
+		DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+		return -DWC_E_INVALID;
+	}
+
+	if (!DWC_CIRCLEQ_EMPTY_ENTRY(req, queue_entry)) {
+		dwc_otg_request_done(ep, req, -DWC_E_RESTART);
+	} else {
+		req = NULL;
+	}
+
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+	return req ? 0 : -DWC_E_SHUTDOWN;
+
+}
+
+/**
+ * dwc_otg_pcd_ep_wedge - sets the halt feature and ignores clear requests
+ *
+ * Use this to stall an endpoint and ignore CLEAR_FEATURE(HALT_ENDPOINT)
+ * requests. If the gadget driver clears the halt status, it will
+ * automatically unwedge the endpoint.
+ *
+ * Returns zero on success, else negative DWC error code.
+ */
+int dwc_otg_pcd_ep_wedge(dwc_otg_pcd_t * pcd, void *ep_handle)
+{
+	dwc_otg_pcd_ep_t *ep;
+	dwc_irqflags_t flags;
+	int retval = 0;
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+
+	if ((!ep->desc && ep != &pcd->ep0) ||
+	    (ep->desc && (ep->desc->bmAttributes == UE_ISOCHRONOUS))) {
+		DWC_WARN("%s, bad ep\n", __func__);
+		return -DWC_E_INVALID;
+	}
+
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+		DWC_WARN("%d %s XFer In process\n", ep->dwc_ep.num,
+			 ep->dwc_ep.is_in ? "IN" : "OUT");
+		retval = -DWC_E_AGAIN;
+	} else {
+                /* This code needs to be reviewed */
+		if (ep->dwc_ep.is_in == 1 && GET_CORE_IF(pcd)->dma_desc_enable) {
+			dtxfsts_data_t txstatus;
+			fifosize_data_t txfifosize;
+
+			txfifosize.d32 =
+			    DWC_READ_REG32(&GET_CORE_IF(pcd)->
+					   core_global_regs->dtxfsiz[ep->dwc_ep.
+								     tx_fifo_num]);
+			txstatus.d32 =
+			    DWC_READ_REG32(&GET_CORE_IF(pcd)->
+					   dev_if->in_ep_regs[ep->dwc_ep.num]->
+					   dtxfsts);
+
+			if (txstatus.b.txfspcavail < txfifosize.b.depth) {
+				DWC_WARN("%s() Data In Tx Fifo\n", __func__);
+				retval = -DWC_E_AGAIN;
+			} else {
+				if (ep->dwc_ep.num == 0) {
+					pcd->ep0state = EP0_STALL;
+				}
+
+				ep->stopped = 1;
+				dwc_otg_ep_set_stall(GET_CORE_IF(pcd),
+						     &ep->dwc_ep);
+			}
+		} else {
+			if (ep->dwc_ep.num == 0) {
+				pcd->ep0state = EP0_STALL;
+			}
+
+			ep->stopped = 1;
+			dwc_otg_ep_set_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
+		}
+	}
+
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+	return retval;
+}
+
+int dwc_otg_pcd_ep_halt(dwc_otg_pcd_t * pcd, void *ep_handle, int value)
+{
+	dwc_otg_pcd_ep_t *ep;
+	dwc_irqflags_t flags;
+	int retval = 0;
+
+	ep = get_ep_from_handle(pcd, ep_handle);
+
+	if (!ep || (!ep->desc && ep != &pcd->ep0) ||
+	    (ep->desc && (ep->desc->bmAttributes == UE_ISOCHRONOUS))) {
+		DWC_WARN("%s, bad ep\n", __func__);
+		return -DWC_E_INVALID;
+	}
+
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+		DWC_WARN("%d %s XFer In process\n", ep->dwc_ep.num,
+			 ep->dwc_ep.is_in ? "IN" : "OUT");
+		retval = -DWC_E_AGAIN;
+	} else if (value == 0) {
+		dwc_otg_ep_clear_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
+	} else if (value == 1) {
+		if (ep->dwc_ep.is_in == 1 && GET_CORE_IF(pcd)->dma_desc_enable) {
+			dtxfsts_data_t txstatus;
+			fifosize_data_t txfifosize;
+
+			txfifosize.d32 =
+			    DWC_READ_REG32(&GET_CORE_IF(pcd)->core_global_regs->
+					   dtxfsiz[ep->dwc_ep.tx_fifo_num]);
+			txstatus.d32 =
+			    DWC_READ_REG32(&GET_CORE_IF(pcd)->dev_if->
+					   in_ep_regs[ep->dwc_ep.num]->dtxfsts);
+
+			if (txstatus.b.txfspcavail < txfifosize.b.depth) {
+				DWC_WARN("%s() Data In Tx Fifo\n", __func__);
+				retval = -DWC_E_AGAIN;
+			} else {
+				if (ep->dwc_ep.num == 0) {
+					pcd->ep0state = EP0_STALL;
+				}
+
+				ep->stopped = 1;
+				dwc_otg_ep_set_stall(GET_CORE_IF(pcd),
+						     &ep->dwc_ep);
+			}
+		} else {
+			if (ep->dwc_ep.num == 0) {
+				pcd->ep0state = EP0_STALL;
+			}
+
+			ep->stopped = 1;
+			dwc_otg_ep_set_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
+		}
+	} else if (value == 2) {
+		ep->dwc_ep.stall_clear_flag = 0;
+	} else if (value == 3) {
+		ep->dwc_ep.stall_clear_flag = 1;
+	}
+
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+
+	return retval;
+}
+
+/**
+ * This function initiates remote wakeup of the host from suspend state.
+ */
+void dwc_otg_pcd_rem_wkup_from_suspend(dwc_otg_pcd_t * pcd, int set)
+{
+	dctl_data_t dctl = { 0 };
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dsts_data_t dsts;
+
+	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+	if (!dsts.b.suspsts) {
+		DWC_WARN("Remote wakeup while is not in suspend state\n");
+	}
+	/* Check if DEVICE_REMOTE_WAKEUP feature enabled */
+	if (pcd->remote_wakeup_enable) {
+		if (set) {
+
+			if (core_if->adp_enable) {
+				gpwrdn_data_t gpwrdn;
+
+				dwc_otg_adp_probe_stop(core_if);
+
+				/* Mask SRP detected interrupt from Power Down Logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.srp_det_msk = 1;
+				DWC_MODIFY_REG32(&core_if->
+						 core_global_regs->gpwrdn,
+						 gpwrdn.d32, 0);
+
+				/* Disable Power Down Logic */
+				gpwrdn.d32 = 0;
+				gpwrdn.b.pmuactv = 1;
+				DWC_MODIFY_REG32(&core_if->
+						 core_global_regs->gpwrdn,
+						 gpwrdn.d32, 0);
+
+				/*
+				 * Initialize the Core for Device mode.
+				 */
+				core_if->op_state = B_PERIPHERAL;
+				dwc_otg_core_init(core_if);
+				dwc_otg_enable_global_interrupts(core_if);
+				cil_pcd_start(core_if);
+
+				dwc_otg_initiate_srp(core_if);
+			}
+
+			dctl.b.rmtwkupsig = 1;
+			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+					 dctl, 0, dctl.d32);
+			DWC_DEBUGPL(DBG_PCD, "Set Remote Wakeup\n");
+
+			dwc_mdelay(2);
+			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+					 dctl, dctl.d32, 0);
+			DWC_DEBUGPL(DBG_PCD, "Clear Remote Wakeup\n");
+		}
+	} else {
+		DWC_DEBUGPL(DBG_PCD, "Remote Wakeup is disabled\n");
+	}
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+/**
+ * This function initiates remote wakeup of the host from L1 sleep state.
+ */
+void dwc_otg_pcd_rem_wkup_from_sleep(dwc_otg_pcd_t * pcd, int set)
+{
+	glpmcfg_data_t lpmcfg;
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+
+	/* Check if we are in L1 state */
+	if (!lpmcfg.b.prt_sleep_sts) {
+		DWC_DEBUGPL(DBG_PCD, "Device is not in sleep state\n");
+		return;
+	}
+
+	/* Check if host allows remote wakeup */
+	if (!lpmcfg.b.rem_wkup_en) {
+		DWC_DEBUGPL(DBG_PCD, "Host does not allow remote wakeup\n");
+		return;
+	}
+
+	/* Check if Resume OK */
+	if (!lpmcfg.b.sleep_state_resumeok) {
+		DWC_DEBUGPL(DBG_PCD, "Sleep state resume is not OK\n");
+		return;
+	}
+
+	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
+	lpmcfg.b.en_utmi_sleep = 0;
+	lpmcfg.b.hird_thres &= (~(1 << 4));
+	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
+
+	if (set) {
+		dctl_data_t dctl = {.d32 = 0 };
+		dctl.b.rmtwkupsig = 1;
+		/* Set RmtWkUpSig bit to start remote wakup signaling.
+		 * Hardware will automatically clear this bit.
+		 */
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl,
+				 0, dctl.d32);
+		DWC_DEBUGPL(DBG_PCD, "Set Remote Wakeup\n");
+	}
+
+}
+#endif
+
+/**
+ * Performs remote wakeup.
+ */
+void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t * pcd, int set)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_irqflags_t flags;
+	if (dwc_otg_is_device_mode(core_if)) {
+		DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+		if (core_if->lx_state == DWC_OTG_L1) {
+			dwc_otg_pcd_rem_wkup_from_sleep(pcd, set);
+		} else {
+#endif
+			dwc_otg_pcd_rem_wkup_from_suspend(pcd, set);
+#ifdef CONFIG_USB_DWC_OTG_LPM
+		}
+#endif
+		DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+	}
+	return;
+}
+
+void dwc_otg_pcd_disconnect_us(dwc_otg_pcd_t * pcd, int no_of_usecs)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dctl_data_t dctl = { 0 };
+
+	if (dwc_otg_is_device_mode(core_if)) {
+		dctl.b.sftdiscon = 1;
+		DWC_PRINTF("Soft disconnect for %d useconds\n",no_of_usecs);
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+		dwc_udelay(no_of_usecs);
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32,0);
+
+	} else{
+		DWC_PRINTF("NOT SUPPORTED IN HOST MODE\n");
+	}
+	return;
+
+}
+
+int dwc_otg_pcd_wakeup(dwc_otg_pcd_t * pcd)
+{
+	dsts_data_t dsts;
+	gotgctl_data_t gotgctl;
+
+	/*
+	 * This function starts the Protocol if no session is in progress. If
+	 * a session is already in progress, but the device is suspended,
+	 * remote wakeup signaling is started.
+	 */
+
+	/* Check if valid session */
+	gotgctl.d32 =
+	    DWC_READ_REG32(&(GET_CORE_IF(pcd)->core_global_regs->gotgctl));
+	if (gotgctl.b.bsesvld) {
+		/* Check if suspend state */
+		dsts.d32 =
+		    DWC_READ_REG32(&
+				   (GET_CORE_IF(pcd)->dev_if->
+				    dev_global_regs->dsts));
+		if (dsts.b.suspsts) {
+			dwc_otg_pcd_remote_wakeup(pcd, 1);
+		}
+	} else {
+		dwc_otg_pcd_initiate_srp(pcd);
+	}
+
+	return 0;
+
+}
+
+/**
+ * Start the SRP timer to detect when the SRP does not complete within
+ * 6 seconds.
+ *
+ * @param pcd the pcd structure.
+ */
+void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t * pcd)
+{
+	dwc_irqflags_t flags;
+	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
+	dwc_otg_initiate_srp(GET_CORE_IF(pcd));
+	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
+}
+
+int dwc_otg_pcd_get_frame_number(dwc_otg_pcd_t * pcd)
+{
+	return dwc_otg_get_frame_number(GET_CORE_IF(pcd));
+}
+
+int dwc_otg_pcd_is_lpm_enabled(dwc_otg_pcd_t * pcd)
+{
+	return GET_CORE_IF(pcd)->core_params->lpm_enable;
+}
+
+uint32_t get_b_hnp_enable(dwc_otg_pcd_t * pcd)
+{
+	return pcd->b_hnp_enable;
+}
+
+uint32_t get_a_hnp_support(dwc_otg_pcd_t * pcd)
+{
+	return pcd->a_hnp_support;
+}
+
+uint32_t get_a_alt_hnp_support(dwc_otg_pcd_t * pcd)
+{
+	return pcd->a_alt_hnp_support;
+}
+
+int dwc_otg_pcd_get_rmwkup_enable(dwc_otg_pcd_t * pcd)
+{
+	return pcd->remote_wakeup_enable;
+}
+
+#endif /* DWC_HOST_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd.h	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,266 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.h $
+ * $Revision: #48 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+#if !defined(__DWC_PCD_H__)
+#define __DWC_PCD_H__
+
+#include "dwc_otg_os_dep.h"
+#include "usb.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_pcd_if.h"
+struct cfiobject;
+
+/**
+ * @file
+ *
+ * This file contains the structures, constants, and interfaces for
+ * the Perpherial Contoller Driver (PCD).
+ *
+ * The Peripheral Controller Driver (PCD) for Linux will implement the
+ * Gadget API, so that the existing Gadget drivers can be used. For
+ * the Mass Storage Function driver the File-backed USB Storage Gadget
+ * (FBS) driver will be used.  The FBS driver supports the
+ * Control-Bulk (CB), Control-Bulk-Interrupt (CBI), and Bulk-Only
+ * transports.
+ *
+ */
+
+/** Invalid DMA Address */
+#define DWC_DMA_ADDR_INVALID	(~(dwc_dma_t)0)
+
+/** Max Transfer size for any EP */
+#define DDMA_MAX_TRANSFER_SIZE 65535
+
+/**
+ * Get the pointer to the core_if from the pcd pointer.
+ */
+#define GET_CORE_IF( _pcd ) (_pcd->core_if)
+
+/**
+ * States of EP0.
+ */
+typedef enum ep0_state {
+	EP0_DISCONNECT,		/* no host */
+	EP0_IDLE,
+	EP0_IN_DATA_PHASE,
+	EP0_OUT_DATA_PHASE,
+	EP0_IN_STATUS_PHASE,
+	EP0_OUT_STATUS_PHASE,
+	EP0_STALL,
+} ep0state_e;
+
+/** Fordward declaration.*/
+struct dwc_otg_pcd;
+
+/** DWC_otg iso request structure.
+ *
+ */
+typedef struct usb_iso_request dwc_otg_pcd_iso_request_t;
+
+#ifdef DWC_UTE_PER_IO
+
+/**
+ * This shall be the exact analogy of the same type structure defined in the
+ * usb_gadget.h. Each descriptor contains
+ */
+struct dwc_iso_pkt_desc_port {
+	uint32_t offset;
+	uint32_t length;	/* expected length */
+	uint32_t actual_length;
+	uint32_t status;
+};
+
+struct dwc_iso_xreq_port {
+	/** transfer/submission flag */
+	uint32_t tr_sub_flags;
+	/** Start the request ASAP */
+#define DWC_EREQ_TF_ASAP		0x00000002
+	/** Just enqueue the request w/o initiating a transfer */
+#define DWC_EREQ_TF_ENQUEUE		0x00000004
+
+	/**
+	* count of ISO packets attached to this request - shall
+	* not exceed the pio_alloc_pkt_count
+	*/
+	uint32_t pio_pkt_count;
+	/** count of ISO packets allocated for this request */
+	uint32_t pio_alloc_pkt_count;
+	/** number of ISO packet errors */
+	uint32_t error_count;
+	/** reserved for future extension */
+	uint32_t res;
+	/** Will be allocated and freed in the UTE gadget and based on the CFC value */
+	struct dwc_iso_pkt_desc_port *per_io_frame_descs;
+};
+#endif
+/** DWC_otg request structure.
+ * This structure is a list of requests.
+ */
+typedef struct dwc_otg_pcd_request {
+	void *priv;
+	void *buf;
+	dwc_dma_t dma;
+	uint32_t length;
+	uint32_t actual;
+	unsigned sent_zlp:1;
+    /**
+     * Used instead of original buffer if
+     * it(physical address) is not dword-aligned.
+     **/
+     uint8_t *dw_align_buf;
+     dwc_dma_t dw_align_buf_dma;
+
+	 DWC_CIRCLEQ_ENTRY(dwc_otg_pcd_request) queue_entry;
+#ifdef DWC_UTE_PER_IO
+	struct dwc_iso_xreq_port ext_req;
+	//void *priv_ereq_nport; /*  */
+#endif
+} dwc_otg_pcd_request_t;
+
+DWC_CIRCLEQ_HEAD(req_list, dwc_otg_pcd_request);
+
+/**	  PCD EP structure.
+ * This structure describes an EP, there is an array of EPs in the PCD
+ * structure.
+ */
+typedef struct dwc_otg_pcd_ep {
+	/** USB EP Descriptor */
+	const usb_endpoint_descriptor_t *desc;
+
+	/** queue of dwc_otg_pcd_requests. */
+	struct req_list queue;
+	unsigned stopped:1;
+	unsigned disabling:1;
+	unsigned dma:1;
+	unsigned queue_sof:1;
+
+#ifdef DWC_EN_ISOC
+	/** ISOC req handle passed */
+	void *iso_req_handle;
+#endif				//_EN_ISOC_
+
+	/** DWC_otg ep data. */
+	dwc_ep_t dwc_ep;
+
+	/** Pointer to PCD */
+	struct dwc_otg_pcd *pcd;
+
+	void *priv;
+} dwc_otg_pcd_ep_t;
+
+/** DWC_otg PCD Structure.
+ * This structure encapsulates the data for the dwc_otg PCD.
+ */
+struct dwc_otg_pcd {
+	const struct dwc_otg_pcd_function_ops *fops;
+	/** The DWC otg device pointer */
+	struct dwc_otg_device *otg_dev;
+	/** Core Interface */
+	dwc_otg_core_if_t *core_if;
+	/** State of EP0 */
+	ep0state_e ep0state;
+	/** EP0 Request is pending */
+	unsigned ep0_pending:1;
+	/** Indicates when SET CONFIGURATION Request is in process */
+	unsigned request_config:1;
+	/** The state of the Remote Wakeup Enable. */
+	unsigned remote_wakeup_enable:1;
+	/** The state of the B-Device HNP Enable. */
+	unsigned b_hnp_enable:1;
+	/** The state of A-Device HNP Support. */
+	unsigned a_hnp_support:1;
+	/** The state of the A-Device Alt HNP support. */
+	unsigned a_alt_hnp_support:1;
+	/** Count of pending Requests */
+	unsigned request_pending;
+
+	/** SETUP packet for EP0
+	 * This structure is allocated as a DMA buffer on PCD initialization
+	 * with enough space for up to 3 setup packets.
+	 */
+	union {
+		usb_device_request_t req;
+		uint32_t d32[2];
+	} *setup_pkt;
+
+	dwc_dma_t setup_pkt_dma_handle;
+
+	/* Additional buffer and flag for CTRL_WR premature case */
+	uint8_t *backup_buf;
+	unsigned data_terminated;
+
+	/** 2-byte dma buffer used to return status from GET_STATUS */
+	uint16_t *status_buf;
+	dwc_dma_t status_buf_dma_handle;
+
+	/** EP0 */
+	dwc_otg_pcd_ep_t ep0;
+
+	/** Array of IN EPs. */
+	dwc_otg_pcd_ep_t in_ep[MAX_EPS_CHANNELS - 1];
+	/** Array of OUT EPs. */
+	dwc_otg_pcd_ep_t out_ep[MAX_EPS_CHANNELS - 1];
+	/** number of valid EPs in the above array. */
+//        unsigned      num_eps : 4;
+	dwc_spinlock_t *lock;
+
+	/** Tasklet to defer starting of TEST mode transmissions until
+	 *	Status Phase has been completed.
+	 */
+	dwc_tasklet_t *test_mode_tasklet;
+
+	/** Tasklet to delay starting of xfer in DMA mode */
+	dwc_tasklet_t *start_xfer_tasklet;
+
+	/** The test mode to enter when the tasklet is executed. */
+	unsigned test_mode;
+	/** The cfi_api structure that implements most of the CFI API
+	 * and OTG specific core configuration functionality
+	 */
+#ifdef DWC_UTE_CFI
+	struct cfiobject *cfi;
+#endif
+
+};
+
+//FIXME this functions should be static, and this prototypes should be removed
+extern void dwc_otg_request_nuke(dwc_otg_pcd_ep_t * ep);
+extern void dwc_otg_request_done(dwc_otg_pcd_ep_t * ep,
+				 dwc_otg_pcd_request_t * req, int32_t status);
+
+void dwc_otg_iso_buffer_done(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep,
+			     void *req_handle);
+
+extern void do_test_mode(void *data);
+#endif
+#endif /* DWC_HOST_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,360 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_if.h $
+ * $Revision: #11 $
+ * $Date: 2011/10/26 $
+ * $Change: 1873028 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+
+#if !defined(__DWC_PCD_IF_H__)
+#define __DWC_PCD_IF_H__
+
+//#include "dwc_os.h"
+#include "dwc_otg_core_if.h"
+
+/** @file
+ * This file defines DWC_OTG PCD Core API.
+ */
+
+struct dwc_otg_pcd;
+typedef struct dwc_otg_pcd dwc_otg_pcd_t;
+
+/** Maxpacket size for EP0 */
+#define MAX_EP0_SIZE	64
+/** Maxpacket size for any EP */
+#define MAX_PACKET_SIZE 1024
+
+/** @name Function Driver Callbacks */
+/** @{ */
+
+/** This function will be called whenever a previously queued request has
+ * completed.  The status value will be set to -DWC_E_SHUTDOWN to indicated a
+ * failed or aborted transfer, or -DWC_E_RESTART to indicate the device was reset,
+ * or -DWC_E_TIMEOUT to indicate it timed out, or -DWC_E_INVALID to indicate invalid
+ * parameters. */
+typedef int (*dwc_completion_cb_t) (dwc_otg_pcd_t * pcd, void *ep_handle,
+				    void *req_handle, int32_t status,
+				    uint32_t actual);
+/**
+ * This function will be called whenever a previousle queued ISOC request has
+ * completed. Count of ISOC packets could be read using dwc_otg_pcd_get_iso_packet_count
+ * function.
+ * The status of each ISOC packet could be read using dwc_otg_pcd_get_iso_packet_*
+ * functions.
+ */
+typedef int (*dwc_isoc_completion_cb_t) (dwc_otg_pcd_t * pcd, void *ep_handle,
+					 void *req_handle, int proc_buf_num);
+/** This function should handle any SETUP request that cannot be handled by the
+ * PCD Core.  This includes most GET_DESCRIPTORs, SET_CONFIGS, Any
+ * class-specific requests, etc.  The function must non-blocking.
+ *
+ * Returns 0 on success.
+ * Returns -DWC_E_NOT_SUPPORTED if the request is not supported.
+ * Returns -DWC_E_INVALID if the setup request had invalid parameters or bytes.
+ * Returns -DWC_E_SHUTDOWN on any other error. */
+typedef int (*dwc_setup_cb_t) (dwc_otg_pcd_t * pcd, uint8_t * bytes);
+/** This is called whenever the device has been disconnected.  The function
+ * driver should take appropriate action to clean up all pending requests in the
+ * PCD Core, remove all endpoints (except ep0), and initialize back to reset
+ * state. */
+typedef int (*dwc_disconnect_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called when device has been connected. */
+typedef int (*dwc_connect_cb_t) (dwc_otg_pcd_t * pcd, int speed);
+/** This function is called when device has been suspended */
+typedef int (*dwc_suspend_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called when device has received LPM tokens, i.e.
+ * device has been sent to sleep state. */
+typedef int (*dwc_sleep_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called when device has been resumed
+ * from suspend(L2) or L1 sleep state. */
+typedef int (*dwc_resume_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called whenever hnp params has been changed.
+ * User can call get_b_hnp_enable, get_a_hnp_support, get_a_alt_hnp_support functions
+ * to get hnp parameters. */
+typedef int (*dwc_hnp_params_changed_cb_t) (dwc_otg_pcd_t * pcd);
+/** This function is called whenever USB RESET is detected. */
+typedef int (*dwc_reset_cb_t) (dwc_otg_pcd_t * pcd);
+
+typedef int (*cfi_setup_cb_t) (dwc_otg_pcd_t * pcd, void *ctrl_req_bytes);
+
+/**
+ *
+ * @param ep_handle	Void pointer to the usb_ep structure
+ * @param ereq_port Pointer to the extended request structure created in the
+ *					portable part.
+ */
+typedef int (*xiso_completion_cb_t) (dwc_otg_pcd_t * pcd, void *ep_handle,
+				     void *req_handle, int32_t status,
+				     void *ereq_port);
+/** Function Driver Ops Data Structure */
+struct dwc_otg_pcd_function_ops {
+	dwc_connect_cb_t connect;
+	dwc_disconnect_cb_t disconnect;
+	dwc_setup_cb_t setup;
+	dwc_completion_cb_t complete;
+	dwc_isoc_completion_cb_t isoc_complete;
+	dwc_suspend_cb_t suspend;
+	dwc_sleep_cb_t sleep;
+	dwc_resume_cb_t resume;
+	dwc_reset_cb_t reset;
+	dwc_hnp_params_changed_cb_t hnp_changed;
+	cfi_setup_cb_t cfi_setup;
+#ifdef DWC_UTE_PER_IO
+	xiso_completion_cb_t xisoc_complete;
+#endif
+};
+/** @} */
+
+/** @name Function Driver Functions */
+/** @{ */
+
+/** Call this function to get pointer on dwc_otg_pcd_t,
+ * this pointer will be used for all PCD API functions.
+ *
+ * @param core_if The DWC_OTG Core
+ */
+extern dwc_otg_pcd_t *dwc_otg_pcd_init(dwc_otg_core_if_t * core_if);
+
+/** Frees PCD allocated by dwc_otg_pcd_init
+ *
+ * @param pcd The PCD
+ */
+extern void dwc_otg_pcd_remove(dwc_otg_pcd_t * pcd);
+
+/** Call this to bind the function driver to the PCD Core.
+ *
+ * @param pcd Pointer on dwc_otg_pcd_t returned by dwc_otg_pcd_init function.
+ * @param fops The Function Driver Ops data structure containing pointers to all callbacks.
+ */
+extern void dwc_otg_pcd_start(dwc_otg_pcd_t * pcd,
+			      const struct dwc_otg_pcd_function_ops *fops);
+
+/** Enables an endpoint for use.  This function enables an endpoint in
+ * the PCD.  The endpoint is described by the ep_desc which has the
+ * same format as a USB ep descriptor.  The ep_handle parameter is used to refer
+ * to the endpoint from other API functions and in callbacks.  Normally this
+ * should be called after a SET_CONFIGURATION/SET_INTERFACE to configure the
+ * core for that interface.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
+ * Returns 0 on success.
+ *
+ * @param pcd The PCD
+ * @param ep_desc Endpoint descriptor
+ * @param usb_ep Handle on endpoint, that will be used to identify endpoint.
+ */
+extern int dwc_otg_pcd_ep_enable(dwc_otg_pcd_t * pcd,
+				 const uint8_t * ep_desc, void *usb_ep);
+
+/** Disable the endpoint referenced by ep_handle.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error occurred.
+ * Returns 0 on success. */
+extern int dwc_otg_pcd_ep_disable(dwc_otg_pcd_t * pcd, void *ep_handle);
+
+/** Queue a data transfer request on the endpoint referenced by ep_handle.
+ * After the transfer is completes, the complete callback will be called with
+ * the request status.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param buf The buffer for the data
+ * @param dma_buf The DMA buffer for the data
+ * @param buflen The length of the data transfer
+ * @param zero Specifies whether to send zero length last packet.
+ * @param req_handle Set this handle to any value to use to reference this
+ * request in the ep_dequeue function or from the complete callback
+ * @param atomic_alloc If driver need to perform atomic allocations
+ * for internal data structures.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
+ * Returns 0 on success. */
+extern int dwc_otg_pcd_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
+				uint8_t * buf, dwc_dma_t dma_buf,
+				uint32_t buflen, int zero, void *req_handle,
+				int atomic_alloc);
+#ifdef DWC_UTE_PER_IO
+/**
+ *
+ * @param ereq_nonport	Pointer to the extended request part of the
+ *						usb_request structure defined in usb_gadget.h file.
+ */
+extern int dwc_otg_pcd_xiso_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
+				     uint8_t * buf, dwc_dma_t dma_buf,
+				     uint32_t buflen, int zero,
+				     void *req_handle, int atomic_alloc,
+				     void *ereq_nonport);
+
+#endif
+
+/** De-queue the specified data transfer that has not yet completed.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
+ * Returns 0 on success. */
+extern int dwc_otg_pcd_ep_dequeue(dwc_otg_pcd_t * pcd, void *ep_handle,
+				  void *req_handle);
+
+/** Halt (STALL) an endpoint or clear it.
+ *
+ * Returns -DWC_E_INVALID if invalid parameters were passed.
+ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
+ * Returns -DWC_E_AGAIN if the STALL cannot be sent and must be tried again later
+ * Returns 0 on success. */
+extern int dwc_otg_pcd_ep_halt(dwc_otg_pcd_t * pcd, void *ep_handle, int value);
+
+/** This function */
+extern int dwc_otg_pcd_ep_wedge(dwc_otg_pcd_t * pcd, void *ep_handle);
+
+/** This function should be called on every hardware interrupt */
+extern int32_t dwc_otg_pcd_handle_intr(dwc_otg_pcd_t * pcd);
+
+/** This function returns current frame number */
+extern int dwc_otg_pcd_get_frame_number(dwc_otg_pcd_t * pcd);
+
+/**
+ * Start isochronous transfers on the endpoint referenced by ep_handle.
+ * For isochronous transfers duble buffering is used.
+ * After processing each of buffers comlete callback will be called with
+ * status for each transaction.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param buf0 The virtual address of first data buffer
+ * @param buf1 The virtual address of second data buffer
+ * @param dma0 The DMA address of first data buffer
+ * @param dma1 The DMA address of second data buffer
+ * @param sync_frame Data pattern frame number
+ * @param dp_frame Data size for pattern frame
+ * @param data_per_frame Data size for regular frame
+ * @param start_frame Frame number to start transfers, if -1 then start transfers ASAP.
+ * @param buf_proc_intrvl Interval of ISOC Buffer processing
+ * @param req_handle Handle of ISOC request
+ * @param atomic_alloc Specefies whether to perform atomic allocation for
+ * 			internal data structures.
+ *
+ * Returns -DWC_E_NO_MEMORY if there is no enough memory.
+ * Returns -DWC_E_INVALID if incorrect arguments are passed to the function.
+ * Returns -DW_E_SHUTDOWN for any other error.
+ * Returns 0 on success
+ */
+extern int dwc_otg_pcd_iso_ep_start(dwc_otg_pcd_t * pcd, void *ep_handle,
+				    uint8_t * buf0, uint8_t * buf1,
+				    dwc_dma_t dma0, dwc_dma_t dma1,
+				    int sync_frame, int dp_frame,
+				    int data_per_frame, int start_frame,
+				    int buf_proc_intrvl, void *req_handle,
+				    int atomic_alloc);
+
+/** Stop ISOC transfers on endpoint referenced by ep_handle.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param req_handle Handle of ISOC request
+ *
+ * Returns -DWC_E_INVALID if incorrect arguments are passed to the function
+ * Returns 0 on success
+ */
+int dwc_otg_pcd_iso_ep_stop(dwc_otg_pcd_t * pcd, void *ep_handle,
+			    void *req_handle);
+
+/** Get ISOC packet status.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param iso_req_handle Isochronoush request handle
+ * @param packet Number of packet
+ * @param status Out parameter for returning status
+ * @param actual Out parameter for returning actual length
+ * @param offset Out parameter for returning offset
+ *
+ */
+extern void dwc_otg_pcd_get_iso_packet_params(dwc_otg_pcd_t * pcd,
+					      void *ep_handle,
+					      void *iso_req_handle, int packet,
+					      int *status, int *actual,
+					      int *offset);
+
+/** Get ISOC packet count.
+ *
+ * @param pcd The PCD
+ * @param ep_handle The handle of the endpoint
+ * @param iso_req_handle
+ */
+extern int dwc_otg_pcd_get_iso_packet_count(dwc_otg_pcd_t * pcd,
+					    void *ep_handle,
+					    void *iso_req_handle);
+
+/** This function starts the SRP Protocol if no session is in progress. If
+ * a session is already in progress, but the device is suspended,
+ * remote wakeup signaling is started.
+ */
+extern int dwc_otg_pcd_wakeup(dwc_otg_pcd_t * pcd);
+
+/** This function returns 1 if LPM support is enabled, and 0 otherwise. */
+extern int dwc_otg_pcd_is_lpm_enabled(dwc_otg_pcd_t * pcd);
+
+/** This function returns 1 if remote wakeup is allowed and 0, otherwise. */
+extern int dwc_otg_pcd_get_rmwkup_enable(dwc_otg_pcd_t * pcd);
+
+/** Initiate SRP */
+extern void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t * pcd);
+
+/** Starts remote wakeup signaling. */
+extern void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t * pcd, int set);
+
+/** Starts micorsecond soft disconnect. */
+extern void dwc_otg_pcd_disconnect_us(dwc_otg_pcd_t * pcd, int no_of_usecs);
+/** This function returns whether device is dualspeed.*/
+extern uint32_t dwc_otg_pcd_is_dualspeed(dwc_otg_pcd_t * pcd);
+
+/** This function returns whether device is otg. */
+extern uint32_t dwc_otg_pcd_is_otg(dwc_otg_pcd_t * pcd);
+
+/** These functions allow to get hnp parameters */
+extern uint32_t get_b_hnp_enable(dwc_otg_pcd_t * pcd);
+extern uint32_t get_a_hnp_support(dwc_otg_pcd_t * pcd);
+extern uint32_t get_a_alt_hnp_support(dwc_otg_pcd_t * pcd);
+
+/** CFI specific Interface functions */
+/** Allocate a cfi buffer */
+extern uint8_t *cfiw_ep_alloc_buffer(dwc_otg_pcd_t * pcd, void *pep,
+				     dwc_dma_t * addr, size_t buflen,
+				     int flags);
+
+/******************************************************************************/
+
+/** @} */
+
+#endif				/* __DWC_PCD_IF_H__ */
+
+#endif				/* DWC_HOST_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,5147 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_intr.c $
+ * $Revision: #116 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+
+#include "dwc_otg_pcd.h"
+
+#ifdef DWC_UTE_CFI
+#include "dwc_otg_cfi.h"
+#endif
+
+#ifdef DWC_UTE_PER_IO
+extern void complete_xiso_ep(dwc_otg_pcd_ep_t * ep);
+#endif
+//#define PRINT_CFI_DMA_DESCS
+
+#define DEBUG_EP0
+
+/**
+ * This function updates OTG.
+ */
+static void dwc_otg_pcd_update_otg(dwc_otg_pcd_t * pcd, const unsigned reset)
+{
+
+	if (reset) {
+		pcd->b_hnp_enable = 0;
+		pcd->a_hnp_support = 0;
+		pcd->a_alt_hnp_support = 0;
+	}
+
+	if (pcd->fops->hnp_changed) {
+		pcd->fops->hnp_changed(pcd);
+	}
+}
+
+/** @file
+ * This file contains the implementation of the PCD Interrupt handlers.
+ *
+ * The PCD handles the device interrupts.  Many conditions can cause a
+ * device interrupt. When an interrupt occurs, the device interrupt
+ * service routine determines the cause of the interrupt and
+ * dispatches handling to the appropriate function. These interrupt
+ * handling functions are described below.
+ * All interrupt registers are processed from LSB to MSB.
+ */
+
+/**
+ * This function prints the ep0 state for debug purposes.
+ */
+static inline void print_ep0_state(dwc_otg_pcd_t * pcd)
+{
+#ifdef DEBUG
+	char str[40];
+
+	switch (pcd->ep0state) {
+	case EP0_DISCONNECT:
+		dwc_strcpy(str, "EP0_DISCONNECT");
+		break;
+	case EP0_IDLE:
+		dwc_strcpy(str, "EP0_IDLE");
+		break;
+	case EP0_IN_DATA_PHASE:
+		dwc_strcpy(str, "EP0_IN_DATA_PHASE");
+		break;
+	case EP0_OUT_DATA_PHASE:
+		dwc_strcpy(str, "EP0_OUT_DATA_PHASE");
+		break;
+	case EP0_IN_STATUS_PHASE:
+		dwc_strcpy(str, "EP0_IN_STATUS_PHASE");
+		break;
+	case EP0_OUT_STATUS_PHASE:
+		dwc_strcpy(str, "EP0_OUT_STATUS_PHASE");
+		break;
+	case EP0_STALL:
+		dwc_strcpy(str, "EP0_STALL");
+		break;
+	default:
+		dwc_strcpy(str, "EP0_INVALID");
+	}
+
+	DWC_DEBUGPL(DBG_ANY, "%s(%d)\n", str, pcd->ep0state);
+#endif
+}
+
+/**
+ * This function calculate the size of the payload in the memory
+ * for out endpoints and prints size for debug purposes(used in
+ * 2.93a DevOutNak feature).
+ */
+static inline void print_memory_payload(dwc_otg_pcd_t * pcd,  dwc_ep_t * ep)
+{
+#ifdef DEBUG
+	deptsiz_data_t deptsiz_init = {.d32 = 0 };
+	deptsiz_data_t deptsiz_updt = {.d32 = 0 };
+	int pack_num;
+	unsigned payload;
+
+	deptsiz_init.d32 = pcd->core_if->start_doeptsiz_val[ep->num];
+	deptsiz_updt.d32 =
+		DWC_READ_REG32(&pcd->core_if->dev_if->
+						out_ep_regs[ep->num]->doeptsiz);
+	/* Payload will be */
+	payload = deptsiz_init.b.xfersize - deptsiz_updt.b.xfersize;
+	/* Packet count is decremented every time a packet
+	 * is written to the RxFIFO not in to the external memory
+	 * So, if payload == 0, then it means no packet was sent to ext memory*/
+	pack_num = (!payload) ? 0 : (deptsiz_init.b.pktcnt - deptsiz_updt.b.pktcnt);
+	DWC_DEBUGPL(DBG_PCDV,
+		"Payload for EP%d-%s\n",
+		ep->num, (ep->is_in ? "IN" : "OUT"));
+	DWC_DEBUGPL(DBG_PCDV,
+		"Number of transfered bytes = 0x%08x\n", payload);
+	DWC_DEBUGPL(DBG_PCDV,
+		"Number of transfered packets = %d\n", pack_num);
+#endif
+}
+
+
+#ifdef DWC_UTE_CFI
+static inline void print_desc(struct dwc_otg_dma_desc *ddesc,
+			      const uint8_t * epname, int descnum)
+{
+	CFI_INFO
+	    ("%s DMA_DESC(%d) buf=0x%08x bytes=0x%04x; sp=0x%x; l=0x%x; sts=0x%02x; bs=0x%02x\n",
+	     epname, descnum, ddesc->buf, ddesc->status.b.bytes,
+	     ddesc->status.b.sp, ddesc->status.b.l, ddesc->status.b.sts,
+	     ddesc->status.b.bs);
+}
+#endif
+
+/**
+ * This function returns pointer to in ep struct with number ep_num
+ */
+static inline dwc_otg_pcd_ep_t *get_in_ep(dwc_otg_pcd_t * pcd, uint32_t ep_num)
+{
+	int i;
+	int num_in_eps = GET_CORE_IF(pcd)->dev_if->num_in_eps;
+	if (ep_num == 0) {
+		return &pcd->ep0;
+	} else {
+		for (i = 0; i < num_in_eps; ++i) {
+			if (pcd->in_ep[i].dwc_ep.num == ep_num)
+				return &pcd->in_ep[i];
+		}
+		return 0;
+	}
+}
+
+/**
+ * This function returns pointer to out ep struct with number ep_num
+ */
+static inline dwc_otg_pcd_ep_t *get_out_ep(dwc_otg_pcd_t * pcd, uint32_t ep_num)
+{
+	int i;
+	int num_out_eps = GET_CORE_IF(pcd)->dev_if->num_out_eps;
+	if (ep_num == 0) {
+		return &pcd->ep0;
+	} else {
+		for (i = 0; i < num_out_eps; ++i) {
+			if (pcd->out_ep[i].dwc_ep.num == ep_num)
+				return &pcd->out_ep[i];
+		}
+		return 0;
+	}
+}
+
+/**
+ * This functions gets a pointer to an EP from the wIndex address
+ * value of the control request.
+ */
+dwc_otg_pcd_ep_t *get_ep_by_addr(dwc_otg_pcd_t * pcd, u16 wIndex)
+{
+	dwc_otg_pcd_ep_t *ep;
+	uint32_t ep_num = UE_GET_ADDR(wIndex);
+
+	if (ep_num == 0) {
+		ep = &pcd->ep0;
+	} else if (UE_GET_DIR(wIndex) == UE_DIR_IN) {	/* in ep */
+		ep = &pcd->in_ep[ep_num - 1];
+	} else {
+		ep = &pcd->out_ep[ep_num - 1];
+	}
+
+	return ep;
+}
+
+/**
+ * This function checks the EP request queue, if the queue is not
+ * empty the next request is started.
+ */
+void start_next_request(dwc_otg_pcd_ep_t * ep)
+{
+	dwc_otg_pcd_request_t *req = 0;
+	uint32_t max_transfer =
+	    GET_CORE_IF(ep->pcd)->core_params->max_transfer_size;
+
+#ifdef DWC_UTE_CFI
+	struct dwc_otg_pcd *pcd;
+	pcd = ep->pcd;
+#endif
+
+	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+		req = DWC_CIRCLEQ_FIRST(&ep->queue);
+
+#ifdef DWC_UTE_CFI
+		if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+			ep->dwc_ep.cfi_req_len = req->length;
+			pcd->cfi->ops.build_descriptors(pcd->cfi, pcd, ep, req);
+		} else {
+#endif
+			/* Setup and start the Transfer */
+			if (req->dw_align_buf) {
+				ep->dwc_ep.dma_addr = req->dw_align_buf_dma;
+				ep->dwc_ep.start_xfer_buff = req->dw_align_buf;
+				ep->dwc_ep.xfer_buff = req->dw_align_buf;
+			} else {
+				ep->dwc_ep.dma_addr = req->dma;
+				ep->dwc_ep.start_xfer_buff = req->buf;
+				ep->dwc_ep.xfer_buff = req->buf;
+			}
+			ep->dwc_ep.sent_zlp = 0;
+			ep->dwc_ep.total_len = req->length;
+			ep->dwc_ep.xfer_len = 0;
+			ep->dwc_ep.xfer_count = 0;
+
+			ep->dwc_ep.maxxfer = max_transfer;
+			if (GET_CORE_IF(ep->pcd)->dma_desc_enable) {
+				uint32_t out_max_xfer = DDMA_MAX_TRANSFER_SIZE
+				    - (DDMA_MAX_TRANSFER_SIZE % 4);
+				if (ep->dwc_ep.is_in) {
+					if (ep->dwc_ep.maxxfer >
+					    DDMA_MAX_TRANSFER_SIZE) {
+						ep->dwc_ep.maxxfer =
+						    DDMA_MAX_TRANSFER_SIZE;
+					}
+				} else {
+					if (ep->dwc_ep.maxxfer > out_max_xfer) {
+						ep->dwc_ep.maxxfer =
+						    out_max_xfer;
+					}
+				}
+			}
+			if (ep->dwc_ep.maxxfer < ep->dwc_ep.total_len) {
+				ep->dwc_ep.maxxfer -=
+				    (ep->dwc_ep.maxxfer % ep->dwc_ep.maxpacket);
+			}
+			if (req->sent_zlp) {
+				if ((ep->dwc_ep.total_len %
+				     ep->dwc_ep.maxpacket == 0)
+				    && (ep->dwc_ep.total_len != 0)) {
+					ep->dwc_ep.sent_zlp = 1;
+				}
+
+			}
+#ifdef DWC_UTE_CFI
+		}
+#endif
+		dwc_otg_ep_start_transfer(GET_CORE_IF(ep->pcd), &ep->dwc_ep);
+	} else if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+		DWC_PRINTF("There are no more ISOC requests \n");
+		ep->dwc_ep.frame_num = 0xFFFFFFFF;
+	}
+}
+
+/**
+ * This function handles the SOF Interrupts. At this time the SOF
+ * Interrupt is disabled.
+ */
+int32_t dwc_otg_pcd_handle_sof_intr(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+	gintsts_data_t gintsts;
+
+	DWC_DEBUGPL(DBG_PCD, "SOF\n");
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.sofintr = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * This function handles the Rx Status Queue Level Interrupt, which
+ * indicates that there is a least one packet in the Rx FIFO.  The
+ * packets are moved from the FIFO to memory, where they will be
+ * processed when the Endpoint Interrupt Register indicates Transfer
+ * Complete or SETUP Phase Done.
+ *
+ * Repeat the following until the Rx Status Queue is empty:
+ *	 -# Read the Receive Status Pop Register (GRXSTSP) to get Packet
+ *		info
+ *	 -# If Receive FIFO is empty then skip to step Clear the interrupt
+ *		and exit
+ *	 -# If SETUP Packet call dwc_otg_read_setup_packet to copy the
+ *		SETUP data to the buffer
+ *	 -# If OUT Data Packet call dwc_otg_read_packet to copy the data
+ *		to the destination buffer
+ */
+int32_t dwc_otg_pcd_handle_rx_status_q_level_intr(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	gintmsk_data_t gintmask = {.d32 = 0 };
+	device_grxsts_data_t status;
+	dwc_otg_pcd_ep_t *ep;
+	gintsts_data_t gintsts;
+#ifdef DEBUG
+	static char *dpid_str[] = { "D0", "D2", "D1", "MDATA" };
+#endif
+
+	//DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _pcd);
+	/* Disable the Rx Status Queue Level interrupt */
+	gintmask.b.rxstsqlvl = 1;
+	DWC_MODIFY_REG32(&global_regs->gintmsk, gintmask.d32, 0);
+
+	/* Get the Status from the top of the FIFO */
+	status.d32 = DWC_READ_REG32(&global_regs->grxstsp);
+
+	DWC_DEBUGPL(DBG_PCD, "EP:%d BCnt:%d DPID:%s "
+		    "pktsts:%x Frame:%d(0x%0x)\n",
+		    status.b.epnum, status.b.bcnt,
+		    dpid_str[status.b.dpid],
+		    status.b.pktsts, status.b.fn, status.b.fn);
+	/* Get pointer to EP structure */
+	ep = get_out_ep(pcd, status.b.epnum);
+
+	switch (status.b.pktsts) {
+	case DWC_DSTS_GOUT_NAK:
+		DWC_DEBUGPL(DBG_PCDV, "Global OUT NAK\n");
+		break;
+	case DWC_STS_DATA_UPDT:
+		DWC_DEBUGPL(DBG_PCDV, "OUT Data Packet\n");
+		if (status.b.bcnt && ep->dwc_ep.xfer_buff) {
+			/** @todo NGS Check for buffer overflow? */
+			dwc_otg_read_packet(core_if,
+					    ep->dwc_ep.xfer_buff,
+					    status.b.bcnt);
+			ep->dwc_ep.xfer_count += status.b.bcnt;
+			ep->dwc_ep.xfer_buff += status.b.bcnt;
+		}
+		break;
+	case DWC_STS_XFER_COMP:
+		DWC_DEBUGPL(DBG_PCDV, "OUT Complete\n");
+		break;
+	case DWC_DSTS_SETUP_COMP:
+#ifdef DEBUG_EP0
+		DWC_DEBUGPL(DBG_PCDV, "Setup Complete\n");
+#endif
+		break;
+	case DWC_DSTS_SETUP_UPDT:
+		dwc_otg_read_setup_packet(core_if, pcd->setup_pkt->d32);
+#ifdef DEBUG_EP0
+		DWC_DEBUGPL(DBG_PCD,
+			    "SETUP PKT: %02x.%02x v%04x i%04x l%04x\n",
+			    pcd->setup_pkt->req.bmRequestType,
+			    pcd->setup_pkt->req.bRequest,
+			    UGETW(pcd->setup_pkt->req.wValue),
+			    UGETW(pcd->setup_pkt->req.wIndex),
+			    UGETW(pcd->setup_pkt->req.wLength));
+#endif
+		ep->dwc_ep.xfer_count += status.b.bcnt;
+		break;
+	default:
+		DWC_DEBUGPL(DBG_PCDV, "Invalid Packet Status (0x%0x)\n",
+			    status.b.pktsts);
+		break;
+	}
+
+	/* Enable the Rx Status Queue Level interrupt */
+	DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmask.d32);
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.rxstsqlvl = 1;
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	//DWC_DEBUGPL(DBG_PCDV, "EXIT: %s\n", __func__);
+	return 1;
+}
+
+/**
+ * This function examines the Device IN Token Learning Queue to
+ * determine the EP number of the last IN token received.  This
+ * implementation is for the Mass Storage device where there are only
+ * 2 IN EPs (Control-IN and BULK-IN).
+ *
+ * The EP numbers for the first six IN Tokens are in DTKNQR1 and there
+ * are 8 EP Numbers in each of the other possible DTKNQ Registers.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ *
+ */
+static inline int get_ep_of_last_in_token(dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_device_global_regs_t *dev_global_regs =
+	    core_if->dev_if->dev_global_regs;
+	const uint32_t TOKEN_Q_DEPTH = core_if->hwcfg2.b.dev_token_q_depth;
+	/* Number of Token Queue Registers */
+	const int DTKNQ_REG_CNT = (TOKEN_Q_DEPTH + 7) / 8;
+	dtknq1_data_t dtknqr1;
+	uint32_t in_tkn_epnums[4];
+	int ndx = 0;
+	int i = 0;
+	volatile uint32_t *addr = &dev_global_regs->dtknqr1;
+	int epnum = 0;
+
+	//DWC_DEBUGPL(DBG_PCD,"dev_token_q_depth=%d\n",TOKEN_Q_DEPTH);
+
+	/* Read the DTKNQ Registers */
+	for (i = 0; i < DTKNQ_REG_CNT; i++) {
+		in_tkn_epnums[i] = DWC_READ_REG32(addr);
+		DWC_DEBUGPL(DBG_PCDV, "DTKNQR%d=0x%08x\n", i + 1,
+			    in_tkn_epnums[i]);
+		if (addr == &dev_global_regs->dvbusdis) {
+			addr = &dev_global_regs->dtknqr3_dthrctl;
+		} else {
+			++addr;
+		}
+
+	}
+
+	/* Copy the DTKNQR1 data to the bit field. */
+	dtknqr1.d32 = in_tkn_epnums[0];
+	/* Get the EP numbers */
+	in_tkn_epnums[0] = dtknqr1.b.epnums0_5;
+	ndx = dtknqr1.b.intknwptr - 1;
+
+	//DWC_DEBUGPL(DBG_PCDV,"ndx=%d\n",ndx);
+	if (ndx == -1) {
+		/** @todo Find a simpler way to calculate the max
+		 * queue position.*/
+		int cnt = TOKEN_Q_DEPTH;
+		if (TOKEN_Q_DEPTH <= 6) {
+			cnt = TOKEN_Q_DEPTH - 1;
+		} else if (TOKEN_Q_DEPTH <= 14) {
+			cnt = TOKEN_Q_DEPTH - 7;
+		} else if (TOKEN_Q_DEPTH <= 22) {
+			cnt = TOKEN_Q_DEPTH - 15;
+		} else {
+			cnt = TOKEN_Q_DEPTH - 23;
+		}
+		epnum = (in_tkn_epnums[DTKNQ_REG_CNT - 1] >> (cnt * 4)) & 0xF;
+	} else {
+		if (ndx <= 5) {
+			epnum = (in_tkn_epnums[0] >> (ndx * 4)) & 0xF;
+		} else if (ndx <= 13) {
+			ndx -= 6;
+			epnum = (in_tkn_epnums[1] >> (ndx * 4)) & 0xF;
+		} else if (ndx <= 21) {
+			ndx -= 14;
+			epnum = (in_tkn_epnums[2] >> (ndx * 4)) & 0xF;
+		} else if (ndx <= 29) {
+			ndx -= 22;
+			epnum = (in_tkn_epnums[3] >> (ndx * 4)) & 0xF;
+		}
+	}
+	//DWC_DEBUGPL(DBG_PCD,"epnum=%d\n",epnum);
+	return epnum;
+}
+
+/**
+ * This interrupt occurs when the non-periodic Tx FIFO is half-empty.
+ * The active request is checked for the next packet to be loaded into
+ * the non-periodic Tx FIFO.
+ */
+int32_t dwc_otg_pcd_handle_np_tx_fifo_empty_intr(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	dwc_otg_dev_in_ep_regs_t *ep_regs;
+	gnptxsts_data_t txstatus = {.d32 = 0 };
+	gintsts_data_t gintsts;
+
+	int epnum = 0;
+	dwc_otg_pcd_ep_t *ep = 0;
+	uint32_t len = 0;
+	int dwords;
+
+	/* Get the epnum from the IN Token Learning Queue. */
+	epnum = get_ep_of_last_in_token(core_if);
+	ep = get_in_ep(pcd, epnum);
+
+	DWC_DEBUGPL(DBG_PCD, "NP TxFifo Empty: %d \n", epnum);
+
+	ep_regs = core_if->dev_if->in_ep_regs[epnum];
+
+	len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+	if (len > ep->dwc_ep.maxpacket) {
+		len = ep->dwc_ep.maxpacket;
+	}
+	dwords = (len + 3) / 4;
+
+	/* While there is space in the queue and space in the FIFO and
+	 * More data to tranfer, Write packets to the Tx FIFO */
+	txstatus.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+	DWC_DEBUGPL(DBG_PCDV, "b4 GNPTXSTS=0x%08x\n", txstatus.d32);
+
+	while (txstatus.b.nptxqspcavail > 0 &&
+	       txstatus.b.nptxfspcavail > dwords &&
+	       ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len) {
+		/* Write the FIFO */
+		dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0);
+		len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+
+		if (len > ep->dwc_ep.maxpacket) {
+			len = ep->dwc_ep.maxpacket;
+		}
+
+		dwords = (len + 3) / 4;
+		txstatus.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
+		DWC_DEBUGPL(DBG_PCDV, "GNPTXSTS=0x%08x\n", txstatus.d32);
+	}
+
+	DWC_DEBUGPL(DBG_PCDV, "GNPTXSTS=0x%08x\n",
+		    DWC_READ_REG32(&global_regs->gnptxsts));
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.nptxfempty = 1;
+	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * This function is called when dedicated Tx FIFO Empty interrupt occurs.
+ * The active request is checked for the next packet to be loaded into
+ * apropriate Tx FIFO.
+ */
+static int32_t write_empty_tx_fifo(dwc_otg_pcd_t * pcd, uint32_t epnum)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	dwc_otg_dev_in_ep_regs_t *ep_regs;
+	dtxfsts_data_t txstatus = {.d32 = 0 };
+	dwc_otg_pcd_ep_t *ep = 0;
+	uint32_t len = 0;
+	int dwords;
+
+	ep = get_in_ep(pcd, epnum);
+
+	DWC_DEBUGPL(DBG_PCD, "Dedicated TxFifo Empty: %d \n", epnum);
+
+	ep_regs = core_if->dev_if->in_ep_regs[epnum];
+
+	len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+
+	if (len > ep->dwc_ep.maxpacket) {
+		len = ep->dwc_ep.maxpacket;
+	}
+
+	dwords = (len + 3) / 4;
+
+	/* While there is space in the queue and space in the FIFO and
+	 * More data to tranfer, Write packets to the Tx FIFO */
+	txstatus.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum, txstatus.d32);
+
+	while (txstatus.b.txfspcavail > dwords &&
+	       ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len &&
+	       ep->dwc_ep.xfer_len != 0) {
+		/* Write the FIFO */
+		dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0);
+
+		len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+		if (len > ep->dwc_ep.maxpacket) {
+			len = ep->dwc_ep.maxpacket;
+		}
+
+		dwords = (len + 3) / 4;
+		txstatus.d32 =
+		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+		DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", epnum,
+			    txstatus.d32);
+	}
+
+	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum,
+		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts));
+
+	return 1;
+}
+
+/**
+ * This function is called when the Device is disconnected. It stops
+ * any active requests and informs the Gadget driver of the
+ * disconnect.
+ */
+void dwc_otg_pcd_stop(dwc_otg_pcd_t * pcd)
+{
+	int i, num_in_eps, num_out_eps;
+	dwc_otg_pcd_ep_t *ep;
+
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_SPINLOCK(pcd->lock);
+
+	num_in_eps = GET_CORE_IF(pcd)->dev_if->num_in_eps;
+	num_out_eps = GET_CORE_IF(pcd)->dev_if->num_out_eps;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s() \n", __func__);
+	/* don't disconnect drivers more than once */
+	if (pcd->ep0state == EP0_DISCONNECT) {
+		DWC_DEBUGPL(DBG_ANY, "%s() Already Disconnected\n", __func__);
+		DWC_SPINUNLOCK(pcd->lock);
+		return;
+	}
+	pcd->ep0state = EP0_DISCONNECT;
+
+	/* Reset the OTG state. */
+	dwc_otg_pcd_update_otg(pcd, 1);
+
+	/* Disable the NP Tx Fifo Empty Interrupt. */
+	intr_mask.b.nptxfempty = 1;
+	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+			 intr_mask.d32, 0);
+
+	/* Flush the FIFOs */
+	/**@todo NGS Flush Periodic FIFOs */
+	dwc_otg_flush_tx_fifo(GET_CORE_IF(pcd), 0x10);
+	dwc_otg_flush_rx_fifo(GET_CORE_IF(pcd));
+
+	/* prevent new request submissions, kill any outstanding requests  */
+	ep = &pcd->ep0;
+	dwc_otg_request_nuke(ep);
+	/* prevent new request submissions, kill any outstanding requests  */
+	for (i = 0; i < num_in_eps; i++) {
+		dwc_otg_pcd_ep_t *ep = &pcd->in_ep[i];
+		dwc_otg_request_nuke(ep);
+	}
+	/* prevent new request submissions, kill any outstanding requests  */
+	for (i = 0; i < num_out_eps; i++) {
+		dwc_otg_pcd_ep_t *ep = &pcd->out_ep[i];
+		dwc_otg_request_nuke(ep);
+	}
+
+	/* report disconnect; the driver is already quiesced */
+	if (pcd->fops->disconnect) {
+		DWC_SPINUNLOCK(pcd->lock);
+		pcd->fops->disconnect(pcd);
+		DWC_SPINLOCK(pcd->lock);
+	}
+	DWC_SPINUNLOCK(pcd->lock);
+}
+
+/**
+ * This interrupt indicates that ...
+ */
+int32_t dwc_otg_pcd_handle_i2c_intr(dwc_otg_pcd_t * pcd)
+{
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	gintsts_data_t gintsts;
+
+	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "i2cintr");
+	intr_mask.b.i2cintr = 1;
+	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+			 intr_mask.d32, 0);
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.i2cintr = 1;
+	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+			gintsts.d32);
+	return 1;
+}
+
+/**
+ * This interrupt indicates that ...
+ */
+int32_t dwc_otg_pcd_handle_early_suspend_intr(dwc_otg_pcd_t * pcd)
+{
+	gintsts_data_t gintsts;
+#if defined(VERBOSE)
+	DWC_PRINTF("Early Suspend Detected\n");
+#endif
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.erlysuspend = 1;
+	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+			gintsts.d32);
+	return 1;
+}
+
+/**
+ * This function configures EPO to receive SETUP packets.
+ *
+ * @todo NGS: Update the comments from the HW FS.
+ *
+ *	-# Program the following fields in the endpoint specific registers
+ *	for Control OUT EP 0, in order to receive a setup packet
+ *	- DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back
+ *	  setup packets)
+ *	- DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back
+ *	  to back setup packets)
+ *		- In DMA mode, DOEPDMA0 Register with a memory address to
+ *		  store any setup packets received
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param pcd	  Programming view of the PCD.
+ */
+static inline void ep0_out_start(dwc_otg_core_if_t * core_if,
+				 dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	deptsiz0_data_t doeptsize0 = {.d32 = 0 };
+	dwc_otg_dev_dma_desc_t *dma_desc;
+	depctl_data_t doepctl = {.d32 = 0 };
+
+#ifdef VERBOSE
+	DWC_DEBUGPL(DBG_PCDV, "%s() doepctl0=%0x\n", __func__,
+		    DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl));
+#endif
+	if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+		doepctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl);
+		if (doepctl.b.epena) {
+			return;
+		}
+	}
+
+	doeptsize0.b.supcnt = 3;
+	doeptsize0.b.pktcnt = 1;
+	doeptsize0.b.xfersize = 8 * 3;
+
+	if (core_if->dma_enable) {
+		if (!core_if->dma_desc_enable) {
+			/** put here as for Hermes mode deptisz register should not be written */
+			DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doeptsiz,
+					doeptsize0.d32);
+
+			/** @todo dma needs to handle multiple setup packets (up to 3) */
+			DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepdma,
+					pcd->setup_pkt_dma_handle);
+		} else {
+			dev_if->setup_desc_index =
+			    (dev_if->setup_desc_index + 1) & 1;
+			dma_desc =
+			    dev_if->setup_desc_addr[dev_if->setup_desc_index];
+
+			/** DMA Descriptor Setup */
+			dma_desc->status.b.bs = BS_HOST_BUSY;
+			if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+				dma_desc->status.b.sr = 0;
+				dma_desc->status.b.mtrf = 0;
+			}
+			dma_desc->status.b.l = 1;
+			dma_desc->status.b.ioc = 1;
+			dma_desc->status.b.bytes = pcd->ep0.dwc_ep.maxpacket;
+			dma_desc->buf = pcd->setup_pkt_dma_handle;
+			dma_desc->status.b.sts = 0;
+			dma_desc->status.b.bs = BS_HOST_READY;
+
+			/** DOEPDMA0 Register write */
+			DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepdma,
+					dev_if->dma_setup_desc_addr
+					[dev_if->setup_desc_index]);
+		}
+
+	} else {
+		/** put here as for Hermes mode deptisz register should not be written */
+		DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doeptsiz,
+				doeptsize0.d32);
+	}
+
+	/** DOEPCTL0 Register write cnak will be set after setup interrupt */
+	doepctl.d32 = 0;
+	doepctl.b.epena = 1;
+	if (core_if->snpsid <= OTG_CORE_REV_2_94a) {
+	doepctl.b.cnak = 1;
+	DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32);
+	} else {
+		DWC_MODIFY_REG32(&dev_if->out_ep_regs[0]->doepctl, 0, doepctl.d32);
+	}
+
+#ifdef VERBOSE
+	DWC_DEBUGPL(DBG_PCDV, "doepctl0=%0x\n",
+		    DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl));
+	DWC_DEBUGPL(DBG_PCDV, "diepctl0=%0x\n",
+		    DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl));
+#endif
+}
+
+/**
+ * This interrupt occurs when a USB Reset is detected. When the USB
+ * Reset Interrupt occurs the device state is set to DEFAULT and the
+ * EP0 state is set to IDLE.
+ *	-#	Set the NAK bit for all OUT endpoints (DOEPCTLn.SNAK = 1)
+ *	-#	Unmask the following interrupt bits
+ *		- DAINTMSK.INEP0 = 1 (Control 0 IN endpoint)
+ *	- DAINTMSK.OUTEP0 = 1 (Control 0 OUT endpoint)
+ *	- DOEPMSK.SETUP = 1
+ *	- DOEPMSK.XferCompl = 1
+ *	- DIEPMSK.XferCompl = 1
+ *	- DIEPMSK.TimeOut = 1
+ *	-# Program the following fields in the endpoint specific registers
+ *	for Control OUT EP 0, in order to receive a setup packet
+ *	- DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back
+ *	  setup packets)
+ *	- DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back
+ *	  to back setup packets)
+ *		- In DMA mode, DOEPDMA0 Register with a memory address to
+ *		  store any setup packets received
+ * At this point, all the required initialization, except for enabling
+ * the control 0 OUT endpoint is done, for receiving SETUP packets.
+ */
+int32_t dwc_otg_pcd_handle_usb_reset_intr(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	depctl_data_t doepctl = {.d32 = 0 };
+	depctl_data_t diepctl = {.d32 = 0 };
+	daint_data_t daintmsk = {.d32 = 0 };
+	doepmsk_data_t doepmsk = {.d32 = 0 };
+	diepmsk_data_t diepmsk = {.d32 = 0 };
+	dcfg_data_t dcfg = {.d32 = 0 };
+	grstctl_t resetctl = {.d32 = 0 };
+	dctl_data_t dctl = {.d32 = 0 };
+	int i = 0;
+	gintsts_data_t gintsts;
+	pcgcctl_data_t power = {.d32 = 0 };
+
+	power.d32 = DWC_READ_REG32(core_if->pcgcctl);
+	if (power.b.stoppclk) {
+		power.d32 = 0;
+		power.b.stoppclk = 1;
+		DWC_MODIFY_REG32(core_if->pcgcctl, power.d32, 0);
+
+		power.b.pwrclmp = 1;
+		DWC_MODIFY_REG32(core_if->pcgcctl, power.d32, 0);
+
+		power.b.rstpdwnmodule = 1;
+		DWC_MODIFY_REG32(core_if->pcgcctl, power.d32, 0);
+	}
+
+	core_if->lx_state = DWC_OTG_L0;
+
+	DWC_PRINTF("USB RESET\n");
+#ifdef DWC_EN_ISOC
+	for (i = 1; i < 16; ++i) {
+		dwc_otg_pcd_ep_t *ep;
+		dwc_ep_t *dwc_ep;
+		ep = get_in_ep(pcd, i);
+		if (ep != 0) {
+			dwc_ep = &ep->dwc_ep;
+			dwc_ep->next_frame = 0xffffffff;
+		}
+	}
+#endif /* DWC_EN_ISOC */
+
+	/* reset the HNP settings */
+	dwc_otg_pcd_update_otg(pcd, 1);
+
+	/* Clear the Remote Wakeup Signalling */
+	dctl.b.rmtwkupsig = 1;
+	DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, 0);
+
+	/* Set NAK for all OUT EPs */
+	doepctl.b.snak = 1;
+	for (i = 0; i <= dev_if->num_out_eps; i++) {
+		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepctl, doepctl.d32);
+	}
+
+	/* Flush the NP Tx FIFO */
+	dwc_otg_flush_tx_fifo(core_if, 0x10);
+	/* Flush the Learning Queue */
+	resetctl.b.intknqflsh = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->grstctl, resetctl.d32);
+
+	if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable) {
+		core_if->start_predict = 0;
+		for (i = 0; i<= core_if->dev_if->num_in_eps; ++i) {
+			core_if->nextep_seq[i] = 0xff;	// 0xff - EP not active
+		}
+		core_if->nextep_seq[0] = 0;
+		core_if->first_in_nextep_seq = 0;
+		diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl);
+		diepctl.b.nextep = 0;
+		DWC_WRITE_REG32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
+
+		/* Update IN Endpoint Mismatch Count by active IN NP EP count + 1 */
+		dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+		dcfg.b.epmscnt = 2;
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+		DWC_DEBUGPL(DBG_PCDV,
+			    "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
+			__func__, core_if->first_in_nextep_seq);
+		for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+			DWC_DEBUGPL(DBG_PCDV, "%2d\n", core_if->nextep_seq[i]);
+		}
+	}
+
+	if (core_if->multiproc_int_enable) {
+		daintmsk.b.inep0 = 1;
+		daintmsk.b.outep0 = 1;
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->deachintmsk,
+				daintmsk.d32);
+
+		doepmsk.b.setup = 1;
+		doepmsk.b.xfercompl = 1;
+		doepmsk.b.ahberr = 1;
+		doepmsk.b.epdisabled = 1;
+
+		if ((core_if->dma_desc_enable) ||
+		    (core_if->dma_enable
+		     && core_if->snpsid >= OTG_CORE_REV_3_00a)) {
+			doepmsk.b.stsphsercvd = 1;
+		}
+		if (core_if->dma_desc_enable)
+			doepmsk.b.bna = 1;
+/*
+		doepmsk.b.babble = 1;
+		doepmsk.b.nyet = 1;
+
+		if (core_if->dma_enable) {
+			doepmsk.b.nak = 1;
+		}
+*/
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->doepeachintmsk[0],
+				doepmsk.d32);
+
+		diepmsk.b.xfercompl = 1;
+		diepmsk.b.timeout = 1;
+		diepmsk.b.epdisabled = 1;
+		diepmsk.b.ahberr = 1;
+		diepmsk.b.intknepmis = 1;
+		if (!core_if->en_multiple_tx_fifo && core_if->dma_enable)
+			diepmsk.b.intknepmis = 0;
+
+/*		if (core_if->dma_desc_enable) {
+			diepmsk.b.bna = 1;
+		}
+*/
+/*
+		if (core_if->dma_enable) {
+			diepmsk.b.nak = 1;
+		}
+*/
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->diepeachintmsk[0],
+				diepmsk.d32);
+	} else {
+		daintmsk.b.inep0 = 1;
+		daintmsk.b.outep0 = 1;
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->daintmsk,
+				daintmsk.d32);
+
+		doepmsk.b.setup = 1;
+		doepmsk.b.xfercompl = 1;
+		doepmsk.b.ahberr = 1;
+		doepmsk.b.epdisabled = 1;
+
+		if ((core_if->dma_desc_enable) ||
+		    (core_if->dma_enable
+		     && core_if->snpsid >= OTG_CORE_REV_3_00a)) {
+			doepmsk.b.stsphsercvd = 1;
+		}
+		if (core_if->dma_desc_enable)
+			doepmsk.b.bna = 1;
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->doepmsk, doepmsk.d32);
+
+		diepmsk.b.xfercompl = 1;
+		diepmsk.b.timeout = 1;
+		diepmsk.b.epdisabled = 1;
+		diepmsk.b.ahberr = 1;
+		if (!core_if->en_multiple_tx_fifo && core_if->dma_enable)
+			diepmsk.b.intknepmis = 0;
+/*
+		if (core_if->dma_desc_enable) {
+			diepmsk.b.bna = 1;
+		}
+*/
+
+		DWC_WRITE_REG32(&dev_if->dev_global_regs->diepmsk, diepmsk.d32);
+	}
+
+	/* Reset Device Address */
+	dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
+	dcfg.b.devaddr = 0;
+	DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+	/* setup EP0 to receive SETUP packets */
+	if (core_if->snpsid <= OTG_CORE_REV_2_94a)
+		ep0_out_start(core_if, pcd);
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.usbreset = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * Get the device speed from the device status register and convert it
+ * to USB speed constant.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static int get_device_speed(dwc_otg_core_if_t * core_if)
+{
+	dsts_data_t dsts;
+	int speed = 0;
+	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
+
+	switch (dsts.b.enumspd) {
+	case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ:
+		speed = USB_SPEED_HIGH;
+		break;
+	case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ:
+	case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ:
+		speed = USB_SPEED_FULL;
+		break;
+
+	case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ:
+		speed = USB_SPEED_LOW;
+		break;
+	}
+
+	return speed;
+}
+
+/**
+ * Read the device status register and set the device speed in the
+ * data structure.
+ * Set up EP0 to receive SETUP packets by calling dwc_ep0_activate.
+ */
+int32_t dwc_otg_pcd_handle_enum_done_intr(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+	gintsts_data_t gintsts;
+	gusbcfg_data_t gusbcfg;
+	dwc_otg_core_global_regs_t *global_regs =
+	    GET_CORE_IF(pcd)->core_global_regs;
+	uint8_t utmi16b, utmi8b;
+	int speed;
+	DWC_DEBUGPL(DBG_PCD, "SPEED ENUM\n");
+
+	if (GET_CORE_IF(pcd)->snpsid >= OTG_CORE_REV_2_60a) {
+		utmi16b = 6;	//vahrama old value was 6;
+		utmi8b = 9;
+	} else {
+		utmi16b = 4;
+		utmi8b = 8;
+	}
+	dwc_otg_ep0_activate(GET_CORE_IF(pcd), &ep0->dwc_ep);
+	if (GET_CORE_IF(pcd)->snpsid >= OTG_CORE_REV_3_00a) {
+		ep0_out_start(GET_CORE_IF(pcd), pcd);
+	}
+
+#ifdef DEBUG_EP0
+	print_ep0_state(pcd);
+#endif
+
+	if (pcd->ep0state == EP0_DISCONNECT) {
+		pcd->ep0state = EP0_IDLE;
+	} else if (pcd->ep0state == EP0_STALL) {
+		pcd->ep0state = EP0_IDLE;
+	}
+
+	pcd->ep0state = EP0_IDLE;
+
+	ep0->stopped = 0;
+
+	speed = get_device_speed(GET_CORE_IF(pcd));
+	pcd->fops->connect(pcd, speed);
+
+	/* Set USB turnaround time based on device speed and PHY interface. */
+	gusbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
+	if (speed == USB_SPEED_HIGH) {
+		if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type ==
+		    DWC_HWCFG2_HS_PHY_TYPE_ULPI) {
+			/* ULPI interface */
+			gusbcfg.b.usbtrdtim = 9;
+		}
+		if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type ==
+		    DWC_HWCFG2_HS_PHY_TYPE_UTMI) {
+			/* UTMI+ interface */
+			if (GET_CORE_IF(pcd)->hwcfg4.b.utmi_phy_data_width == 0) {
+				gusbcfg.b.usbtrdtim = utmi8b;
+			} else if (GET_CORE_IF(pcd)->hwcfg4.
+				   b.utmi_phy_data_width == 1) {
+				gusbcfg.b.usbtrdtim = utmi16b;
+			} else if (GET_CORE_IF(pcd)->
+				   core_params->phy_utmi_width == 8) {
+				gusbcfg.b.usbtrdtim = utmi8b;
+			} else {
+				gusbcfg.b.usbtrdtim = utmi16b;
+			}
+		}
+		if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type ==
+		    DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI) {
+			/* UTMI+  OR  ULPI interface */
+			if (gusbcfg.b.ulpi_utmi_sel == 1) {
+				/* ULPI interface */
+				gusbcfg.b.usbtrdtim = 9;
+			} else {
+				/* UTMI+ interface */
+				if (GET_CORE_IF(pcd)->
+				    core_params->phy_utmi_width == 16) {
+					gusbcfg.b.usbtrdtim = utmi16b;
+				} else {
+					gusbcfg.b.usbtrdtim = utmi8b;
+				}
+			}
+		}
+	} else {
+		/* Full or low speed */
+		gusbcfg.b.usbtrdtim = 9;
+	}
+	DWC_WRITE_REG32(&global_regs->gusbcfg, gusbcfg.d32);
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.enumdone = 1;
+	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+			gintsts.d32);
+	return 1;
+}
+
+/**
+ * This interrupt indicates that the ISO OUT Packet was dropped due to
+ * Rx FIFO full or Rx Status Queue Full.  If this interrupt occurs
+ * read all the data from the Rx FIFO.
+ */
+int32_t dwc_otg_pcd_handle_isoc_out_packet_dropped_intr(dwc_otg_pcd_t * pcd)
+{
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	gintsts_data_t gintsts;
+
+	DWC_WARN("INTERRUPT Handler not implemented for %s\n",
+		 "ISOC Out Dropped");
+
+	intr_mask.b.isooutdrop = 1;
+	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+			 intr_mask.d32, 0);
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.isooutdrop = 1;
+	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+			gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * This interrupt indicates the end of the portion of the micro-frame
+ * for periodic transactions.  If there is a periodic transaction for
+ * the next frame, load the packets into the EP periodic Tx FIFO.
+ */
+int32_t dwc_otg_pcd_handle_end_periodic_frame_intr(dwc_otg_pcd_t * pcd)
+{
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	gintsts_data_t gintsts;
+	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "EOP");
+
+	intr_mask.b.eopframe = 1;
+	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+			 intr_mask.d32, 0);
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.eopframe = 1;
+	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+			gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * This interrupt indicates that EP of the packet on the top of the
+ * non-periodic Tx FIFO does not match EP of the IN Token received.
+ *
+ * The "Device IN Token Queue" Registers are read to determine the
+ * order the IN Tokens have been received. The non-periodic Tx FIFO
+ * is flushed, so it can be reloaded in the order seen in the IN Token
+ * Queue.
+ */
+int32_t dwc_otg_pcd_handle_ep_mismatch_intr(dwc_otg_pcd_t * pcd)
+{
+	gintsts_data_t gintsts;
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dctl_data_t dctl;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	if (!core_if->en_multiple_tx_fifo && core_if->dma_enable) {
+		core_if->start_predict = 1;
+
+		DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, core_if);
+
+		gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+		if (!gintsts.b.ginnakeff) {
+			/* Disable EP Mismatch interrupt */
+			intr_mask.d32 = 0;
+			intr_mask.b.epmismatch = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, intr_mask.d32, 0);
+			/* Enable the Global IN NAK Effective Interrupt */
+			intr_mask.d32 = 0;
+			intr_mask.b.ginnakeff = 1;
+			DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, intr_mask.d32);
+			/* Set the global non-periodic IN NAK handshake */
+			dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+			dctl.b.sgnpinnak = 1;
+			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
+		} else {
+			DWC_PRINTF("gintsts.b.ginnakeff = 1! dctl.b.sgnpinnak not set\n");
+		}
+		/* Disabling of all EP's will be done in dwc_otg_pcd_handle_in_nak_effective()
+		 * handler after Global IN NAK Effective interrupt will be asserted */
+	}
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.epmismatch = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * This interrupt is valid only in DMA mode. This interrupt indicates that the
+ * core has stopped fetching data for IN endpoints due to the unavailability of
+ * TxFIFO space or Request Queue space. This interrupt is used by the
+ * application for an endpoint mismatch algorithm.
+ *
+ * @param pcd The PCD
+ */
+int32_t dwc_otg_pcd_handle_ep_fetsusp_intr(dwc_otg_pcd_t * pcd)
+{
+	gintsts_data_t gintsts;
+	gintmsk_data_t gintmsk_data;
+	dctl_data_t dctl;
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, core_if);
+
+	/* Clear the global non-periodic IN NAK handshake */
+	dctl.d32 = 0;
+	dctl.b.cgnpinnak = 1;
+	DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
+
+	/* Mask GINTSTS.FETSUSP interrupt */
+	gintmsk_data.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+	gintmsk_data.b.fetsusp = 0;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk_data.d32);
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.fetsusp = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+	return 1;
+}
+/**
+ * This funcion stalls EP0.
+ */
+static inline void ep0_do_stall(dwc_otg_pcd_t * pcd, const int err_val)
+{
+	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+	usb_device_request_t *ctrl = &pcd->setup_pkt->req;
+	DWC_WARN("req %02x.%02x protocol STALL; err %d\n",
+		 ctrl->bmRequestType, ctrl->bRequest, err_val);
+
+	ep0->dwc_ep.is_in = 1;
+	dwc_otg_ep_set_stall(GET_CORE_IF(pcd), &ep0->dwc_ep);
+	pcd->ep0.stopped = 1;
+	pcd->ep0state = EP0_IDLE;
+	ep0_out_start(GET_CORE_IF(pcd), pcd);
+}
+
+/**
+ * This functions delegates the setup command to the gadget driver.
+ */
+static inline void do_gadget_setup(dwc_otg_pcd_t * pcd,
+				   usb_device_request_t * ctrl)
+{
+	int ret = 0;
+	DWC_SPINUNLOCK(pcd->lock);
+	ret = pcd->fops->setup(pcd, (uint8_t *) ctrl);
+	DWC_SPINLOCK(pcd->lock);
+	if (ret < 0) {
+		ep0_do_stall(pcd, ret);
+	}
+
+	/** @todo This is a g_file_storage gadget driver specific
+	 * workaround: a DELAYED_STATUS result from the fsg_setup
+	 * routine will result in the gadget queueing a EP0 IN status
+	 * phase for a two-stage control transfer. Exactly the same as
+	 * a SET_CONFIGURATION/SET_INTERFACE except that this is a class
+	 * specific request.  Need a generic way to know when the gadget
+	 * driver will queue the status phase. Can we assume when we
+	 * call the gadget driver setup() function that it will always
+	 * queue and require the following flag? Need to look into
+	 * this.
+	 */
+
+	if (ret == 256 + 999) {
+		pcd->request_config = 1;
+	}
+}
+
+#ifdef DWC_UTE_CFI
+/**
+ * This functions delegates the CFI setup commands to the gadget driver.
+ * This function will return a negative value to indicate a failure.
+ */
+static inline int cfi_gadget_setup(dwc_otg_pcd_t * pcd,
+				   struct cfi_usb_ctrlrequest *ctrl_req)
+{
+	int ret = 0;
+
+	if (pcd->fops && pcd->fops->cfi_setup) {
+		DWC_SPINUNLOCK(pcd->lock);
+		ret = pcd->fops->cfi_setup(pcd, ctrl_req);
+		DWC_SPINLOCK(pcd->lock);
+		if (ret < 0) {
+			ep0_do_stall(pcd, ret);
+			return ret;
+		}
+	}
+
+	return ret;
+}
+#endif
+
+/**
+ * This function starts the Zero-Length Packet for the IN status phase
+ * of a 2 stage control transfer.
+ */
+static inline void do_setup_in_status_phase(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+	if (pcd->ep0state == EP0_STALL) {
+		return;
+	}
+
+	pcd->ep0state = EP0_IN_STATUS_PHASE;
+
+	/* Prepare for more SETUP Packets */
+	DWC_DEBUGPL(DBG_PCD, "EP0 IN ZLP\n");
+	if ((GET_CORE_IF(pcd)->snpsid >= OTG_CORE_REV_3_00a)
+	    && (pcd->core_if->dma_desc_enable)
+	    && (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len)) {
+		DWC_DEBUGPL(DBG_PCDV,
+			    "Data terminated wait next packet in out_desc_addr\n");
+		pcd->backup_buf = phys_to_virt(ep0->dwc_ep.dma_addr);
+		pcd->data_terminated = 1;
+	}
+	ep0->dwc_ep.xfer_len = 0;
+	ep0->dwc_ep.xfer_count = 0;
+	ep0->dwc_ep.is_in = 1;
+	ep0->dwc_ep.dma_addr = pcd->setup_pkt_dma_handle;
+	dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
+
+	/* Prepare for more SETUP Packets */
+	//ep0_out_start(GET_CORE_IF(pcd), pcd);
+}
+
+/**
+ * This function starts the Zero-Length Packet for the OUT status phase
+ * of a 2 stage control transfer.
+ */
+static inline void do_setup_out_status_phase(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+	if (pcd->ep0state == EP0_STALL) {
+		DWC_DEBUGPL(DBG_PCD, "EP0 STALLED\n");
+		return;
+	}
+	pcd->ep0state = EP0_OUT_STATUS_PHASE;
+
+	DWC_DEBUGPL(DBG_PCD, "EP0 OUT ZLP\n");
+	ep0->dwc_ep.xfer_len = 0;
+	ep0->dwc_ep.xfer_count = 0;
+	ep0->dwc_ep.is_in = 0;
+	ep0->dwc_ep.dma_addr = pcd->setup_pkt_dma_handle;
+	dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
+
+	/* Prepare for more SETUP Packets */
+	if (GET_CORE_IF(pcd)->dma_enable == 0) {
+		ep0_out_start(GET_CORE_IF(pcd), pcd);
+	}
+}
+
+/**
+ * Clear the EP halt (STALL) and if pending requests start the
+ * transfer.
+ */
+static inline void pcd_clear_halt(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep)
+{
+	if (ep->dwc_ep.stall_clear_flag == 0)
+		dwc_otg_ep_clear_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
+
+	/* Reactive the EP */
+	dwc_otg_ep_activate(GET_CORE_IF(pcd), &ep->dwc_ep);
+	if (ep->stopped) {
+		ep->stopped = 0;
+		/* If there is a request in the EP queue start it */
+
+		/** @todo FIXME: this causes an EP mismatch in DMA mode.
+		 * epmismatch not yet implemented. */
+
+		/*
+		 * Above fixme is solved by implmenting a tasklet to call the
+		 * start_next_request(), outside of interrupt context at some
+		 * time after the current time, after a clear-halt setup packet.
+		 * Still need to implement ep mismatch in the future if a gadget
+		 * ever uses more than one endpoint at once
+		 */
+		ep->queue_sof = 1;
+		DWC_TASK_SCHEDULE(pcd->start_xfer_tasklet);
+	}
+	/* Start Control Status Phase */
+	do_setup_in_status_phase(pcd);
+}
+
+/**
+ * This function is called when the SET_FEATURE TEST_MODE Setup packet
+ * is sent from the host.  The Device Control register is written with
+ * the Test Mode bits set to the specified Test Mode.  This is done as
+ * a tasklet so that the "Status" phase of the control transfer
+ * completes before transmitting the TEST packets.
+ *
+ * @todo This has not been tested since the tasklet struct was put
+ * into the PCD struct!
+ *
+ */
+void do_test_mode(void *data)
+{
+	dctl_data_t dctl;
+	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) data;
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	int test_mode = pcd->test_mode;
+
+//        DWC_WARN("%s() has not been tested since being rewritten!\n", __func__);
+
+	dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+	switch (test_mode) {
+	case 1:		// TEST_J
+		dctl.b.tstctl = 1;
+		break;
+
+	case 2:		// TEST_K
+		dctl.b.tstctl = 2;
+		break;
+
+	case 3:		// TEST_SE0_NAK
+		dctl.b.tstctl = 3;
+		break;
+
+	case 4:		// TEST_PACKET
+		dctl.b.tstctl = 4;
+		break;
+
+	case 5:		// TEST_FORCE_ENABLE
+		dctl.b.tstctl = 5;
+		break;
+	}
+	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
+}
+
+/**
+ * This function process the GET_STATUS Setup Commands.
+ */
+static inline void do_get_status(dwc_otg_pcd_t * pcd)
+{
+	usb_device_request_t ctrl = pcd->setup_pkt->req;
+	dwc_otg_pcd_ep_t *ep;
+	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+	uint16_t *status = pcd->status_buf;
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+#ifdef DEBUG_EP0
+	DWC_DEBUGPL(DBG_PCD,
+		    "GET_STATUS %02x.%02x v%04x i%04x l%04x\n",
+		    ctrl.bmRequestType, ctrl.bRequest,
+		    UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
+		    UGETW(ctrl.wLength));
+#endif
+
+	switch (UT_GET_RECIPIENT(ctrl.bmRequestType)) {
+	case UT_DEVICE:
+		if(UGETW(ctrl.wIndex) == 0xF000) { /* OTG Status selector */
+			DWC_PRINTF("wIndex - %d\n", UGETW(ctrl.wIndex));
+			DWC_PRINTF("OTG VERSION - %d\n", core_if->otg_ver);
+			DWC_PRINTF("OTG CAP - %d, %d\n",
+				   core_if->core_params->otg_cap,
+						DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE);
+			if (core_if->otg_ver == 1
+			    && core_if->core_params->otg_cap ==
+			    DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+				uint8_t *otgsts = (uint8_t*)pcd->status_buf;
+				*otgsts = (core_if->otg_sts & 0x1);
+				pcd->ep0_pending = 1;
+				ep0->dwc_ep.start_xfer_buff =
+				    (uint8_t *) otgsts;
+				ep0->dwc_ep.xfer_buff = (uint8_t *) otgsts;
+				ep0->dwc_ep.dma_addr =
+				    pcd->status_buf_dma_handle;
+				ep0->dwc_ep.xfer_len = 1;
+				ep0->dwc_ep.xfer_count = 0;
+				ep0->dwc_ep.total_len = ep0->dwc_ep.xfer_len;
+				dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd),
+							   &ep0->dwc_ep);
+				return;
+			} else {
+				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+				return;
+			}
+			break;
+		} else {
+			*status = 0x1;	/* Self powered */
+			*status |= pcd->remote_wakeup_enable << 1;
+			break;
+		}
+	case UT_INTERFACE:
+		*status = 0;
+		break;
+
+	case UT_ENDPOINT:
+		ep = get_ep_by_addr(pcd, UGETW(ctrl.wIndex));
+		if (ep == 0 || UGETW(ctrl.wLength) > 2) {
+			ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+			return;
+		}
+		/** @todo check for EP stall */
+		*status = ep->stopped;
+		break;
+	}
+	pcd->ep0_pending = 1;
+	ep0->dwc_ep.start_xfer_buff = (uint8_t *) status;
+	ep0->dwc_ep.xfer_buff = (uint8_t *) status;
+	ep0->dwc_ep.dma_addr = pcd->status_buf_dma_handle;
+	ep0->dwc_ep.xfer_len = 2;
+	ep0->dwc_ep.xfer_count = 0;
+	ep0->dwc_ep.total_len = ep0->dwc_ep.xfer_len;
+	dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
+}
+
+/**
+ * This function process the SET_FEATURE Setup Commands.
+ */
+static inline void do_set_feature(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+	usb_device_request_t ctrl = pcd->setup_pkt->req;
+	dwc_otg_pcd_ep_t *ep = 0;
+	int32_t otg_cap_param = core_if->core_params->otg_cap;
+	gotgctl_data_t gotgctl = {.d32 = 0 };
+
+	DWC_DEBUGPL(DBG_PCD, "SET_FEATURE:%02x.%02x v%04x i%04x l%04x\n",
+		    ctrl.bmRequestType, ctrl.bRequest,
+		    UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
+		    UGETW(ctrl.wLength));
+	DWC_DEBUGPL(DBG_PCD, "otg_cap=%d\n", otg_cap_param);
+
+	switch (UT_GET_RECIPIENT(ctrl.bmRequestType)) {
+	case UT_DEVICE:
+		switch (UGETW(ctrl.wValue)) {
+		case UF_DEVICE_REMOTE_WAKEUP:
+			pcd->remote_wakeup_enable = 1;
+			break;
+
+		case UF_TEST_MODE:
+			/* Setup the Test Mode tasklet to do the Test
+			 * Packet generation after the SETUP Status
+			 * phase has completed. */
+
+			/** @todo This has not been tested since the
+			 * tasklet struct was put into the PCD
+			 * struct! */
+			pcd->test_mode = UGETW(ctrl.wIndex) >> 8;
+			DWC_TASK_SCHEDULE(pcd->test_mode_tasklet);
+			break;
+
+		case UF_DEVICE_B_HNP_ENABLE:
+			DWC_DEBUGPL(DBG_PCDV,
+				    "SET_FEATURE: USB_DEVICE_B_HNP_ENABLE\n");
+
+			/* dev may initiate HNP */
+			if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+				pcd->b_hnp_enable = 1;
+				dwc_otg_pcd_update_otg(pcd, 0);
+				DWC_DEBUGPL(DBG_PCD, "Request B HNP\n");
+				/**@todo Is the gotgctl.devhnpen cleared
+				 * by a USB Reset? */
+				gotgctl.b.devhnpen = 1;
+				gotgctl.b.hnpreq = 1;
+				DWC_WRITE_REG32(&global_regs->gotgctl,
+						gotgctl.d32);
+			} else {
+				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+				return;
+			}
+			break;
+
+		case UF_DEVICE_A_HNP_SUPPORT:
+			/* RH port supports HNP */
+			DWC_DEBUGPL(DBG_PCDV,
+				    "SET_FEATURE: USB_DEVICE_A_HNP_SUPPORT\n");
+			if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+				pcd->a_hnp_support = 1;
+				dwc_otg_pcd_update_otg(pcd, 0);
+			} else {
+				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+				return;
+			}
+			break;
+
+		case UF_DEVICE_A_ALT_HNP_SUPPORT:
+			/* other RH port does */
+			DWC_DEBUGPL(DBG_PCDV,
+				    "SET_FEATURE: USB_DEVICE_A_ALT_HNP_SUPPORT\n");
+			if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+				pcd->a_alt_hnp_support = 1;
+				dwc_otg_pcd_update_otg(pcd, 0);
+			} else {
+				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+				return;
+			}
+			break;
+
+		default:
+			ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+			return;
+
+		}
+		do_setup_in_status_phase(pcd);
+		break;
+
+	case UT_INTERFACE:
+		do_gadget_setup(pcd, &ctrl);
+		break;
+
+	case UT_ENDPOINT:
+		if (UGETW(ctrl.wValue) == UF_ENDPOINT_HALT) {
+			ep = get_ep_by_addr(pcd, UGETW(ctrl.wIndex));
+			if (ep == 0) {
+				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+				return;
+			}
+			ep->stopped = 1;
+			dwc_otg_ep_set_stall(core_if, &ep->dwc_ep);
+		}
+		do_setup_in_status_phase(pcd);
+		break;
+	}
+}
+
+/**
+ * This function process the CLEAR_FEATURE Setup Commands.
+ */
+static inline void do_clear_feature(dwc_otg_pcd_t * pcd)
+{
+	usb_device_request_t ctrl = pcd->setup_pkt->req;
+	dwc_otg_pcd_ep_t *ep = 0;
+
+	DWC_DEBUGPL(DBG_PCD,
+		    "CLEAR_FEATURE:%02x.%02x v%04x i%04x l%04x\n",
+		    ctrl.bmRequestType, ctrl.bRequest,
+		    UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
+		    UGETW(ctrl.wLength));
+
+	switch (UT_GET_RECIPIENT(ctrl.bmRequestType)) {
+	case UT_DEVICE:
+		switch (UGETW(ctrl.wValue)) {
+		case UF_DEVICE_REMOTE_WAKEUP:
+			pcd->remote_wakeup_enable = 0;
+			break;
+
+		case UF_TEST_MODE:
+			/** @todo Add CLEAR_FEATURE for TEST modes. */
+			break;
+
+		default:
+			ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+			return;
+		}
+		do_setup_in_status_phase(pcd);
+		break;
+
+	case UT_ENDPOINT:
+		ep = get_ep_by_addr(pcd, UGETW(ctrl.wIndex));
+		if (ep == 0) {
+			ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
+			return;
+		}
+
+		pcd_clear_halt(pcd, ep);
+
+		break;
+	}
+}
+
+/**
+ * This function process the SET_ADDRESS Setup Commands.
+ */
+static inline void do_set_address(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+	usb_device_request_t ctrl = pcd->setup_pkt->req;
+
+	if (ctrl.bmRequestType == UT_DEVICE) {
+		dcfg_data_t dcfg = {.d32 = 0 };
+
+#ifdef DEBUG_EP0
+//                      DWC_DEBUGPL(DBG_PCDV, "SET_ADDRESS:%d\n", ctrl.wValue);
+#endif
+		dcfg.b.devaddr = UGETW(ctrl.wValue);
+		DWC_MODIFY_REG32(&dev_if->dev_global_regs->dcfg, 0, dcfg.d32);
+		do_setup_in_status_phase(pcd);
+	}
+}
+
+/**
+ *	This function processes SETUP commands. In Linux, the USB Command
+ *	processing is done in two places - the first being the PCD and the
+ *	second in the Gadget Driver (for example, the File-Backed Storage
+ *	Gadget Driver).
+ *
+ * <table>
+ * <tr><td>Command	</td><td>Driver </td><td>Description</td></tr>
+ *
+ * <tr><td>GET_STATUS </td><td>PCD </td><td>Command is processed as
+ * defined in chapter 9 of the USB 2.0 Specification chapter 9
+ * </td></tr>
+ *
+ * <tr><td>CLEAR_FEATURE </td><td>PCD </td><td>The Device and Endpoint
+ * requests are the ENDPOINT_HALT feature is procesed, all others the
+ * interface requests are ignored.</td></tr>
+ *
+ * <tr><td>SET_FEATURE </td><td>PCD </td><td>The Device and Endpoint
+ * requests are processed by the PCD.  Interface requests are passed
+ * to the Gadget Driver.</td></tr>
+ *
+ * <tr><td>SET_ADDRESS </td><td>PCD </td><td>Program the DCFG reg,
+ * with device address received </td></tr>
+ *
+ * <tr><td>GET_DESCRIPTOR </td><td>Gadget Driver </td><td>Return the
+ * requested descriptor</td></tr>
+ *
+ * <tr><td>SET_DESCRIPTOR </td><td>Gadget Driver </td><td>Optional -
+ * not implemented by any of the existing Gadget Drivers.</td></tr>
+ *
+ * <tr><td>SET_CONFIGURATION </td><td>Gadget Driver </td><td>Disable
+ * all EPs and enable EPs for new configuration.</td></tr>
+ *
+ * <tr><td>GET_CONFIGURATION </td><td>Gadget Driver </td><td>Return
+ * the current configuration</td></tr>
+ *
+ * <tr><td>SET_INTERFACE </td><td>Gadget Driver </td><td>Disable all
+ * EPs and enable EPs for new configuration.</td></tr>
+ *
+ * <tr><td>GET_INTERFACE </td><td>Gadget Driver </td><td>Return the
+ * current interface.</td></tr>
+ *
+ * <tr><td>SYNC_FRAME </td><td>PCD </td><td>Display debug
+ * message.</td></tr>
+ * </table>
+ *
+ * When the SETUP Phase Done interrupt occurs, the PCD SETUP commands are
+ * processed by pcd_setup. Calling the Function Driver's setup function from
+ * pcd_setup processes the gadget SETUP commands.
+ */
+static inline void pcd_setup(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	usb_device_request_t ctrl = pcd->setup_pkt->req;
+	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+
+	deptsiz0_data_t doeptsize0 = {.d32 = 0 };
+
+#ifdef DWC_UTE_CFI
+	int retval = 0;
+	struct cfi_usb_ctrlrequest cfi_req;
+#endif
+
+	doeptsize0.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[0]->doeptsiz);
+
+	/** In BDMA more then 1 setup packet is not supported till 3.00a */
+	if (core_if->dma_enable && core_if->dma_desc_enable == 0
+	    && (doeptsize0.b.supcnt < 2)
+	    && (core_if->snpsid < OTG_CORE_REV_2_94a)) {
+		DWC_ERROR
+		    ("\n\n-----------	 CANNOT handle > 1 setup packet in DMA mode\n\n");
+	}
+	if ((core_if->snpsid >= OTG_CORE_REV_3_00a)
+	    && (core_if->dma_enable == 1) && (core_if->dma_desc_enable == 0)) {
+		ctrl =
+		    (pcd->setup_pkt +
+		     (3 - doeptsize0.b.supcnt - 1 +
+		      ep0->dwc_ep.stp_rollover))->req;
+	}
+#ifdef DEBUG_EP0
+	DWC_DEBUGPL(DBG_PCD, "SETUP %02x.%02x v%04x i%04x l%04x\n",
+		    ctrl.bmRequestType, ctrl.bRequest,
+		    UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
+		    UGETW(ctrl.wLength));
+#endif
+
+	/* Clean up the request queue */
+	dwc_otg_request_nuke(ep0);
+	ep0->stopped = 0;
+
+	if (ctrl.bmRequestType & UE_DIR_IN) {
+		ep0->dwc_ep.is_in = 1;
+		pcd->ep0state = EP0_IN_DATA_PHASE;
+	} else {
+		ep0->dwc_ep.is_in = 0;
+		pcd->ep0state = EP0_OUT_DATA_PHASE;
+	}
+
+	if (UGETW(ctrl.wLength) == 0) {
+		ep0->dwc_ep.is_in = 1;
+		pcd->ep0state = EP0_IN_STATUS_PHASE;
+	}
+
+	if (UT_GET_TYPE(ctrl.bmRequestType) != UT_STANDARD) {
+
+#ifdef DWC_UTE_CFI
+		DWC_MEMCPY(&cfi_req, &ctrl, sizeof(usb_device_request_t));
+
+		//printk(KERN_ALERT "CFI: req_type=0x%02x; req=0x%02x\n",
+				ctrl.bRequestType, ctrl.bRequest);
+		if (UT_GET_TYPE(cfi_req.bRequestType) == UT_VENDOR) {
+			if (cfi_req.bRequest > 0xB0 && cfi_req.bRequest < 0xBF) {
+				retval = cfi_setup(pcd, &cfi_req);
+				if (retval < 0) {
+					ep0_do_stall(pcd, retval);
+					pcd->ep0_pending = 0;
+					return;
+				}
+
+				/* if need gadget setup then call it and check the retval */
+				if (pcd->cfi->need_gadget_att) {
+					retval =
+					    cfi_gadget_setup(pcd,
+							     &pcd->
+							     cfi->ctrl_req);
+					if (retval < 0) {
+						pcd->ep0_pending = 0;
+						return;
+					}
+				}
+
+				if (pcd->cfi->need_status_in_complete) {
+					do_setup_in_status_phase(pcd);
+				}
+				return;
+			}
+		}
+#endif
+
+		/* handle non-standard (class/vendor) requests in the gadget driver */
+		do_gadget_setup(pcd, &ctrl);
+		return;
+	}
+
+	/** @todo NGS: Handle bad setup packet? */
+
+///////////////////////////////////////////
+//// --- Standard Request handling --- ////
+
+	switch (ctrl.bRequest) {
+	case UR_GET_STATUS:
+		do_get_status(pcd);
+		break;
+
+	case UR_CLEAR_FEATURE:
+		do_clear_feature(pcd);
+		break;
+
+	case UR_SET_FEATURE:
+		do_set_feature(pcd);
+		break;
+
+	case UR_SET_ADDRESS:
+		do_set_address(pcd);
+		break;
+
+	case UR_SET_INTERFACE:
+	case UR_SET_CONFIG:
+//              _pcd->request_config = 1;       /* Configuration changed */
+		do_gadget_setup(pcd, &ctrl);
+		break;
+
+	case UR_SYNCH_FRAME:
+		do_gadget_setup(pcd, &ctrl);
+		break;
+
+	default:
+		/* Call the Gadget Driver's setup functions */
+		do_gadget_setup(pcd, &ctrl);
+		break;
+	}
+}
+
+/**
+ * This function completes the ep0 control transfer.
+ */
+static int32_t ep0_complete_request(dwc_otg_pcd_ep_t * ep)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	dwc_otg_dev_in_ep_regs_t *in_ep_regs =
+	    dev_if->in_ep_regs[ep->dwc_ep.num];
+#ifdef DEBUG_EP0
+	dwc_otg_dev_out_ep_regs_t *out_ep_regs =
+	    dev_if->out_ep_regs[ep->dwc_ep.num];
+#endif
+	deptsiz0_data_t deptsiz;
+	dev_dma_desc_sts_t desc_sts;
+	dwc_otg_pcd_request_t *req;
+	int is_last = 0;
+	dwc_otg_pcd_t *pcd = ep->pcd;
+
+#ifdef DWC_UTE_CFI
+	struct cfi_usb_ctrlrequest *ctrlreq;
+	int retval = -DWC_E_NOT_SUPPORTED;
+#endif
+
+        desc_sts.b.bytes = 0;
+
+	if (pcd->ep0_pending && DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+		if (ep->dwc_ep.is_in) {
+#ifdef DEBUG_EP0
+			DWC_DEBUGPL(DBG_PCDV, "Do setup OUT status phase\n");
+#endif
+			do_setup_out_status_phase(pcd);
+		} else {
+#ifdef DEBUG_EP0
+			DWC_DEBUGPL(DBG_PCDV, "Do setup IN status phase\n");
+#endif
+
+#ifdef DWC_UTE_CFI
+			ctrlreq = &pcd->cfi->ctrl_req;
+
+			if (UT_GET_TYPE(ctrlreq->bRequestType) == UT_VENDOR) {
+				if (ctrlreq->bRequest > 0xB0
+				    && ctrlreq->bRequest < 0xBF) {
+
+					/* Return if the PCD failed to handle the request */
+					if ((retval =
+					     pcd->cfi->ops.
+					     ctrl_write_complete(pcd->cfi,
+								 pcd)) < 0) {
+						CFI_INFO
+						    ("ERROR setting a new value in the PCD(%d)\n",
+						     retval);
+						ep0_do_stall(pcd, retval);
+						pcd->ep0_pending = 0;
+						return 0;
+					}
+
+					/* If the gadget needs to be notified on the request */
+					if (pcd->cfi->need_gadget_att == 1) {
+						//retval = do_gadget_setup(pcd, &pcd->cfi->ctrl_req);
+						retval =
+						    cfi_gadget_setup(pcd,
+								     &pcd->cfi->
+								     ctrl_req);
+
+						/* Return from the function if the gadget failed to process
+						 * the request properly - this should never happen !!!
+						 */
+						if (retval < 0) {
+							CFI_INFO
+							    ("ERROR setting a new value in the gadget(%d)\n",
+							     retval);
+							pcd->ep0_pending = 0;
+							return 0;
+						}
+					}
+
+					CFI_INFO("%s: RETVAL=%d\n", __func__,
+						 retval);
+					/* If we hit here then the PCD and the gadget has properly
+					 * handled the request - so send the ZLP IN to the host.
+					 */
+					/* @todo: MAS - decide whether we need to start the setup
+					 * stage based on the need_setup value of the cfi object
+					 */
+					do_setup_in_status_phase(pcd);
+					pcd->ep0_pending = 0;
+					return 1;
+				}
+			}
+#endif
+
+			do_setup_in_status_phase(pcd);
+		}
+		pcd->ep0_pending = 0;
+		return 1;
+	}
+
+	if (DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+		return 0;
+	}
+	req = DWC_CIRCLEQ_FIRST(&ep->queue);
+
+	if (pcd->ep0state == EP0_OUT_STATUS_PHASE
+	    || pcd->ep0state == EP0_IN_STATUS_PHASE) {
+		is_last = 1;
+	} else if (ep->dwc_ep.is_in) {
+		deptsiz.d32 = DWC_READ_REG32(&in_ep_regs->dieptsiz);
+		if (core_if->dma_desc_enable != 0)
+			desc_sts = dev_if->in_desc_addr->status;
+#ifdef DEBUG_EP0
+		DWC_DEBUGPL(DBG_PCDV, "%d len=%d  xfersize=%d pktcnt=%d\n",
+			    ep->dwc_ep.num, ep->dwc_ep.xfer_len,
+			    deptsiz.b.xfersize, deptsiz.b.pktcnt);
+#endif
+
+		if (((core_if->dma_desc_enable == 0)
+		     && (deptsiz.b.xfersize == 0))
+		    || ((core_if->dma_desc_enable != 0)
+			&& (desc_sts.b.bytes == 0))) {
+			req->actual = ep->dwc_ep.xfer_count;
+			/* Is a Zero Len Packet needed? */
+			if (req->sent_zlp) {
+#ifdef DEBUG_EP0
+				DWC_DEBUGPL(DBG_PCD, "Setup Rx ZLP\n");
+#endif
+				req->sent_zlp = 0;
+			}
+			do_setup_out_status_phase(pcd);
+		}
+	} else {
+		/* ep0-OUT */
+#ifdef DEBUG_EP0
+		deptsiz.d32 = DWC_READ_REG32(&out_ep_regs->doeptsiz);
+		DWC_DEBUGPL(DBG_PCDV, "%d len=%d xsize=%d pktcnt=%d\n",
+			    ep->dwc_ep.num, ep->dwc_ep.xfer_len,
+			    deptsiz.b.xfersize, deptsiz.b.pktcnt);
+#endif
+		req->actual = ep->dwc_ep.xfer_count;
+
+		/* Is a Zero Len Packet needed? */
+		if (req->sent_zlp) {
+#ifdef DEBUG_EP0
+			DWC_DEBUGPL(DBG_PCDV, "Setup Tx ZLP\n");
+#endif
+			req->sent_zlp = 0;
+		}
+		/* For older cores do setup in status phase in Slave/BDMA modes,
+		 * starting from 3.00 do that only in slave, and for DMA modes
+		 * just re-enable ep 0 OUT here*/
+		if (core_if->dma_enable == 0
+		    || (core_if->dma_desc_enable == 0
+			&& core_if->snpsid <= OTG_CORE_REV_2_94a)) {
+			do_setup_in_status_phase(pcd);
+		} else if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+			DWC_DEBUGPL(DBG_PCDV,
+				    "Enable out ep before in status phase\n");
+			ep0_out_start(core_if, pcd);
+		}
+	}
+
+	/* Complete the request */
+	if (is_last) {
+		dwc_otg_request_done(ep, req, 0);
+		ep->dwc_ep.start_xfer_buff = 0;
+		ep->dwc_ep.xfer_buff = 0;
+		ep->dwc_ep.xfer_len = 0;
+		return 1;
+	}
+	return 0;
+}
+
+#ifdef DWC_UTE_CFI
+/**
+ * This function calculates traverses all the CFI DMA descriptors and
+ * and accumulates the bytes that are left to be transfered.
+ *
+ * @return The total bytes left to transfered, or a negative value as failure
+ */
+static inline int cfi_calc_desc_residue(dwc_otg_pcd_ep_t * ep)
+{
+	int32_t ret = 0;
+	int i;
+	struct dwc_otg_dma_desc *ddesc = NULL;
+	struct cfi_ep *cfiep;
+
+	/* See if the pcd_ep has its respective cfi_ep mapped */
+	cfiep = get_cfi_ep_by_pcd_ep(ep->pcd->cfi, ep);
+	if (!cfiep) {
+		CFI_INFO("%s: Failed to find ep\n", __func__);
+		return -1;
+	}
+
+	ddesc = ep->dwc_ep.descs;
+
+	for (i = 0; (i < cfiep->desc_count) && (i < MAX_DMA_DESCS_PER_EP); i++) {
+
+#if defined(PRINT_CFI_DMA_DESCS)
+		print_desc(ddesc, ep->ep.name, i);
+#endif
+		ret += ddesc->status.b.bytes;
+		ddesc++;
+	}
+
+	if (ret)
+		CFI_INFO("!!!!!!!!!! WARNING (%s) - residue=%d\n", __func__,
+			 ret);
+
+	return ret;
+}
+#endif
+
+/**
+ * This function completes the request for the EP. If there are
+ * additional requests for the EP in the queue they will be started.
+ */
+static void complete_ep(dwc_otg_pcd_ep_t * ep)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	dwc_otg_dev_in_ep_regs_t *in_ep_regs =
+	    dev_if->in_ep_regs[ep->dwc_ep.num];
+	deptsiz_data_t deptsiz;
+	dev_dma_desc_sts_t desc_sts;
+	dwc_otg_pcd_request_t *req = 0;
+	dwc_otg_dev_dma_desc_t *dma_desc;
+	uint32_t byte_count = 0;
+	int is_last = 0;
+	int i;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s() %d-%s\n", __func__, ep->dwc_ep.num,
+		    (ep->dwc_ep.is_in ? "IN" : "OUT"));
+
+	/* Get any pending requests */
+	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+		req = DWC_CIRCLEQ_FIRST(&ep->queue);
+		if (!req) {
+			DWC_PRINTF("complete_ep 0x%p, req = NULL!\n", ep);
+			return;
+		}
+	} else {
+		DWC_PRINTF("complete_ep 0x%p, ep->queue empty!\n", ep);
+		return;
+	}
+
+	DWC_DEBUGPL(DBG_PCD, "Requests %d\n", ep->pcd->request_pending);
+
+	if (ep->dwc_ep.is_in) {
+		deptsiz.d32 = DWC_READ_REG32(&in_ep_regs->dieptsiz);
+
+		if (core_if->dma_enable) {
+			if (core_if->dma_desc_enable == 0) {
+				if (deptsiz.b.xfersize == 0
+				    && deptsiz.b.pktcnt == 0) {
+					byte_count =
+					    ep->dwc_ep.xfer_len -
+					    ep->dwc_ep.xfer_count;
+
+					ep->dwc_ep.xfer_buff += byte_count;
+					ep->dwc_ep.dma_addr += byte_count;
+					ep->dwc_ep.xfer_count += byte_count;
+
+					DWC_DEBUGPL(DBG_PCDV,
+						    "%d-%s len=%d  xfersize=%d pktcnt=%d\n",
+						    ep->dwc_ep.num,
+						    (ep->dwc_ep.
+						     is_in ? "IN" : "OUT"),
+						    ep->dwc_ep.xfer_len,
+						    deptsiz.b.xfersize,
+						    deptsiz.b.pktcnt);
+
+					if (ep->dwc_ep.xfer_len <
+					    ep->dwc_ep.total_len) {
+						dwc_otg_ep_start_transfer
+						    (core_if, &ep->dwc_ep);
+					} else if (ep->dwc_ep.sent_zlp) {
+						/*
+						 * This fragment of code should initiate 0
+						 * length transfer in case if it is queued
+						 * a transfer with size divisible to EPs max
+						 * packet size and with usb_request zero field
+						 * is set, which means that after data is transfered,
+						 * it is also should be transfered
+						 * a 0 length packet at the end. For Slave and
+						 * Buffer DMA modes in this case SW has
+						 * to initiate 2 transfers one with transfer size,
+						 * and the second with 0 size. For Descriptor
+						 * DMA mode SW is able to initiate a transfer,
+						 * which will handle all the packets including
+						 * the last  0 length.
+						 */
+						ep->dwc_ep.sent_zlp = 0;
+						dwc_otg_ep_start_zl_transfer
+						    (core_if, &ep->dwc_ep);
+					} else {
+						is_last = 1;
+					}
+				} else {
+					if (ep->dwc_ep.type ==
+					    DWC_OTG_EP_TYPE_ISOC) {
+						req->actual = 0;
+						dwc_otg_request_done(ep, req, 0);
+
+						ep->dwc_ep.start_xfer_buff = 0;
+						ep->dwc_ep.xfer_buff = 0;
+						ep->dwc_ep.xfer_len = 0;
+
+						/* If there is a request in the queue start it. */
+						start_next_request(ep);
+					} else
+						DWC_WARN
+						("Incomplete transfer (%d - %s [siz=%d pkt=%d])\n",
+						ep->dwc_ep.num,
+						(ep->dwc_ep.is_in ? "IN" : "OUT"),
+						deptsiz.b.xfersize,
+						deptsiz.b.pktcnt);
+				}
+			} else {
+				dma_desc = ep->dwc_ep.desc_addr;
+				byte_count = 0;
+				ep->dwc_ep.sent_zlp = 0;
+
+#ifdef DWC_UTE_CFI
+				CFI_INFO("%s: BUFFER_MODE=%d\n", __func__,
+					 ep->dwc_ep.buff_mode);
+				if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+					int residue;
+
+					residue = cfi_calc_desc_residue(ep);
+					if (residue < 0)
+						return;
+
+					byte_count = residue;
+				} else {
+#endif
+					for (i = 0; i < ep->dwc_ep.desc_cnt;
+					     ++i) {
+					desc_sts = dma_desc->status;
+					byte_count += desc_sts.b.bytes;
+					dma_desc++;
+				}
+#ifdef DWC_UTE_CFI
+				}
+#endif
+				if (byte_count == 0) {
+					ep->dwc_ep.xfer_count =
+					    ep->dwc_ep.total_len;
+					is_last = 1;
+				} else {
+					DWC_WARN("Incomplete transfer\n");
+				}
+			}
+		} else {
+			if (deptsiz.b.xfersize == 0 && deptsiz.b.pktcnt == 0) {
+				DWC_DEBUGPL(DBG_PCDV,
+					    "%d-%s len=%d  xfersize=%d pktcnt=%d\n",
+					    ep->dwc_ep.num,
+					    ep->dwc_ep.is_in ? "IN" : "OUT",
+					    ep->dwc_ep.xfer_len,
+					    deptsiz.b.xfersize,
+					    deptsiz.b.pktcnt);
+
+				/*      Check if the whole transfer was completed,
+				 *      if no, setup transfer for next portion of data
+				 */
+				if (ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+					dwc_otg_ep_start_transfer(core_if,
+								  &ep->dwc_ep);
+				} else if (ep->dwc_ep.sent_zlp) {
+					/*
+					 * This fragment of code should initiate 0
+					 * length trasfer in case if it is queued
+					 * a trasfer with size divisible to EPs max
+					 * packet size and with usb_request zero field
+					 * is set, which means that after data is transfered,
+					 * it is also should be transfered
+					 * a 0 length packet at the end. For Slave and
+					 * Buffer DMA modes in this case SW has
+					 * to initiate 2 transfers one with transfer size,
+					 * and the second with 0 size. For Desriptor
+					 * DMA mode SW is able to initiate a transfer,
+					 * which will handle all the packets including
+					 * the last  0 legth.
+					 */
+					ep->dwc_ep.sent_zlp = 0;
+					dwc_otg_ep_start_zl_transfer(core_if,
+								     &ep->dwc_ep);
+				} else {
+					is_last = 1;
+				}
+			} else {
+				DWC_WARN
+				    ("Incomplete transfer (%d-%s [siz=%d pkt=%d])\n",
+				     ep->dwc_ep.num,
+				     (ep->dwc_ep.is_in ? "IN" : "OUT"),
+				     deptsiz.b.xfersize, deptsiz.b.pktcnt);
+			}
+		}
+	} else {
+		dwc_otg_dev_out_ep_regs_t *out_ep_regs =
+		    dev_if->out_ep_regs[ep->dwc_ep.num];
+		desc_sts.d32 = 0;
+		if (core_if->dma_enable) {
+			if (core_if->dma_desc_enable) {
+				dma_desc = ep->dwc_ep.desc_addr;
+				byte_count = 0;
+				ep->dwc_ep.sent_zlp = 0;
+
+#ifdef DWC_UTE_CFI
+				CFI_INFO("%s: BUFFER_MODE=%d\n", __func__,
+					 ep->dwc_ep.buff_mode);
+				if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+					int residue;
+					residue = cfi_calc_desc_residue(ep);
+					if (residue < 0)
+						return;
+					byte_count = residue;
+				} else {
+#endif
+
+					for (i = 0; i < ep->dwc_ep.desc_cnt;
+					     ++i) {
+						desc_sts = dma_desc->status;
+						byte_count += desc_sts.b.bytes;
+						dma_desc++;
+					}
+
+#ifdef DWC_UTE_CFI
+				}
+#endif
+				/* Checking for interrupt Out transfers with not
+				 * dword aligned mps sizes
+				 */
+				if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_INTR &&
+							(ep->dwc_ep.maxpacket%4)) {
+					ep->dwc_ep.xfer_count =
+					    ep->dwc_ep.total_len - byte_count;
+					if ((ep->dwc_ep.xfer_len %
+					     ep->dwc_ep.maxpacket)
+					    && (ep->dwc_ep.xfer_len /
+						ep->dwc_ep.maxpacket <
+						MAX_DMA_DESC_CNT))
+						ep->dwc_ep.xfer_len -=
+						    (ep->dwc_ep.desc_cnt -
+						     1) * ep->dwc_ep.maxpacket +
+						    ep->dwc_ep.xfer_len %
+						    ep->dwc_ep.maxpacket;
+					else
+						ep->dwc_ep.xfer_len -=
+						    ep->dwc_ep.desc_cnt *
+						    ep->dwc_ep.maxpacket;
+					if (ep->dwc_ep.xfer_len > 0) {
+						dwc_otg_ep_start_transfer
+						    (core_if, &ep->dwc_ep);
+					} else {
+						is_last = 1;
+					}
+				} else {
+					ep->dwc_ep.xfer_count =
+					    ep->dwc_ep.total_len - byte_count +
+					    ((4 -
+					      (ep->dwc_ep.
+					       total_len & 0x3)) & 0x3);
+					is_last = 1;
+				}
+			} else {
+				deptsiz.d32 = 0;
+				deptsiz.d32 =
+				    DWC_READ_REG32(&out_ep_regs->doeptsiz);
+
+				byte_count = (ep->dwc_ep.xfer_len -
+					      ep->dwc_ep.xfer_count -
+					      deptsiz.b.xfersize);
+				ep->dwc_ep.xfer_buff += byte_count;
+				ep->dwc_ep.dma_addr += byte_count;
+				ep->dwc_ep.xfer_count += byte_count;
+
+				/*      Check if the whole transfer was completed,
+				 *      if no, setup transfer for next portion of data
+				 */
+				if (ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+					dwc_otg_ep_start_transfer(core_if,
+								  &ep->dwc_ep);
+				} else if (ep->dwc_ep.sent_zlp) {
+					/*
+					 * This fragment of code should initiate 0
+					 * length trasfer in case if it is queued
+					 * a trasfer with size divisible to EPs max
+					 * packet size and with usb_request zero field
+					 * is set, which means that after data is transfered,
+					 * it is also should be transfered
+					 * a 0 length packet at the end. For Slave and
+					 * Buffer DMA modes in this case SW has
+					 * to initiate 2 transfers one with transfer size,
+					 * and the second with 0 size. For Desriptor
+					 * DMA mode SW is able to initiate a transfer,
+					 * which will handle all the packets including
+					 * the last  0 legth.
+					 */
+					ep->dwc_ep.sent_zlp = 0;
+					dwc_otg_ep_start_zl_transfer(core_if,
+								     &ep->dwc_ep);
+				} else {
+					is_last = 1;
+				}
+			}
+		} else {
+			/*      Check if the whole transfer was completed,
+			 *      if no, setup transfer for next portion of data
+			 */
+			if (ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+				dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
+			} else if (ep->dwc_ep.sent_zlp) {
+				/*
+				 * This fragment of code should initiate 0
+				 * length transfer in case if it is queued
+				 * a transfer with size divisible to EPs max
+				 * packet size and with usb_request zero field
+				 * is set, which means that after data is transfered,
+				 * it is also should be transfered
+				 * a 0 length packet at the end. For Slave and
+				 * Buffer DMA modes in this case SW has
+				 * to initiate 2 transfers one with transfer size,
+				 * and the second with 0 size. For Descriptor
+				 * DMA mode SW is able to initiate a transfer,
+				 * which will handle all the packets including
+				 * the last  0 length.
+				 */
+				ep->dwc_ep.sent_zlp = 0;
+				dwc_otg_ep_start_zl_transfer(core_if,
+							     &ep->dwc_ep);
+			} else {
+				is_last = 1;
+			}
+		}
+
+		DWC_DEBUGPL(DBG_PCDV,
+			    "addr %p,	 %d-%s len=%d cnt=%d xsize=%d pktcnt=%d\n",
+			    &out_ep_regs->doeptsiz, ep->dwc_ep.num,
+			    ep->dwc_ep.is_in ? "IN" : "OUT",
+			    ep->dwc_ep.xfer_len, ep->dwc_ep.xfer_count,
+			    deptsiz.b.xfersize, deptsiz.b.pktcnt);
+	}
+
+	/* Complete the request */
+	if (is_last) {
+#ifdef DWC_UTE_CFI
+		if (ep->dwc_ep.buff_mode != BM_STANDARD) {
+			req->actual = ep->dwc_ep.cfi_req_len - byte_count;
+		} else {
+#endif
+			req->actual = ep->dwc_ep.xfer_count;
+#ifdef DWC_UTE_CFI
+		}
+#endif
+		if (req->dw_align_buf) {
+			if (!ep->dwc_ep.is_in) {
+				dwc_memcpy(req->buf, req->dw_align_buf, req->length);
+			}
+			DWC_DMA_FREE(req->length, req->dw_align_buf,
+				     req->dw_align_buf_dma);
+		}
+
+		dwc_otg_request_done(ep, req, 0);
+
+		ep->dwc_ep.start_xfer_buff = 0;
+		ep->dwc_ep.xfer_buff = 0;
+		ep->dwc_ep.xfer_len = 0;
+
+		/* If there is a request in the queue start it. */
+		start_next_request(ep);
+	}
+}
+
+#ifdef DWC_EN_ISOC
+
+/**
+ * This function BNA interrupt for Isochronous EPs
+ *
+ */
+static void dwc_otg_pcd_handle_iso_bna(dwc_otg_pcd_ep_t * ep)
+{
+	dwc_ep_t *dwc_ep = &ep->dwc_ep;
+	volatile uint32_t *addr;
+	depctl_data_t depctl = {.d32 = 0 };
+	dwc_otg_pcd_t *pcd = ep->pcd;
+	dwc_otg_dev_dma_desc_t *dma_desc;
+	int i;
+
+	dma_desc =
+	    dwc_ep->iso_desc_addr + dwc_ep->desc_cnt * (dwc_ep->proc_buf_num);
+
+	if (dwc_ep->is_in) {
+		dev_dma_desc_sts_t sts = {.d32 = 0 };
+		for (i = 0; i < dwc_ep->desc_cnt; ++i, ++dma_desc) {
+			sts.d32 = dma_desc->status.d32;
+			sts.b_iso_in.bs = BS_HOST_READY;
+			dma_desc->status.d32 = sts.d32;
+		}
+	} else {
+		dev_dma_desc_sts_t sts = {.d32 = 0 };
+		for (i = 0; i < dwc_ep->desc_cnt; ++i, ++dma_desc) {
+			sts.d32 = dma_desc->status.d32;
+			sts.b_iso_out.bs = BS_HOST_READY;
+			dma_desc->status.d32 = sts.d32;
+		}
+	}
+
+	if (dwc_ep->is_in == 0) {
+		addr =
+		    &GET_CORE_IF(pcd)->dev_if->out_ep_regs[dwc_ep->
+							   num]->doepctl;
+	} else {
+		addr =
+		    &GET_CORE_IF(pcd)->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+	}
+	depctl.b.epena = 1;
+	DWC_MODIFY_REG32(addr, depctl.d32, depctl.d32);
+}
+
+/**
+ * This function sets latest iso packet information(non-PTI mode)
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void set_current_pkt_info(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	deptsiz_data_t deptsiz = {.d32 = 0 };
+	dma_addr_t dma_addr;
+	uint32_t offset;
+
+	if (ep->proc_buf_num)
+		dma_addr = ep->dma_addr1;
+	else
+		dma_addr = ep->dma_addr0;
+
+	if (ep->is_in) {
+		deptsiz.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->
+				   in_ep_regs[ep->num]->dieptsiz);
+		offset = ep->data_per_frame;
+	} else {
+		deptsiz.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->
+				   out_ep_regs[ep->num]->doeptsiz);
+		offset =
+		    ep->data_per_frame +
+		    (0x4 & (0x4 - (ep->data_per_frame & 0x3)));
+	}
+
+	if (!deptsiz.b.xfersize) {
+		ep->pkt_info[ep->cur_pkt].length = ep->data_per_frame;
+		ep->pkt_info[ep->cur_pkt].offset =
+		    ep->cur_pkt_dma_addr - dma_addr;
+		ep->pkt_info[ep->cur_pkt].status = 0;
+	} else {
+		ep->pkt_info[ep->cur_pkt].length = ep->data_per_frame;
+		ep->pkt_info[ep->cur_pkt].offset =
+		    ep->cur_pkt_dma_addr - dma_addr;
+		ep->pkt_info[ep->cur_pkt].status = -DWC_E_NO_DATA;
+	}
+	ep->cur_pkt_addr += offset;
+	ep->cur_pkt_dma_addr += offset;
+	ep->cur_pkt++;
+}
+
+/**
+ * This function sets latest iso packet information(DDMA mode)
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP to start the transfer on.
+ *
+ */
+static void set_ddma_iso_pkts_info(dwc_otg_core_if_t * core_if,
+				   dwc_ep_t * dwc_ep)
+{
+	dwc_otg_dev_dma_desc_t *dma_desc;
+	dev_dma_desc_sts_t sts = {.d32 = 0 };
+	iso_pkt_info_t *iso_packet;
+	uint32_t data_per_desc;
+	uint32_t offset;
+	int i, j;
+
+	iso_packet = dwc_ep->pkt_info;
+
+	/** Reinit closed DMA Descriptors*/
+	/** ISO OUT EP */
+	if (dwc_ep->is_in == 0) {
+		dma_desc =
+		    dwc_ep->iso_desc_addr +
+		    dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+		offset = 0;
+
+		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+		     i += dwc_ep->pkt_per_frm) {
+			for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
+				data_per_desc =
+				    ((j + 1) * dwc_ep->maxpacket >
+				     dwc_ep->
+				     data_per_frame) ? dwc_ep->data_per_frame -
+				    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+				data_per_desc +=
+				    (data_per_desc % 4) ? (4 -
+							   data_per_desc %
+							   4) : 0;
+
+				sts.d32 = dma_desc->status.d32;
+
+				/* Write status in iso_packet_decsriptor  */
+				iso_packet->status =
+				    sts.b_iso_out.rxsts +
+				    (sts.b_iso_out.bs ^ BS_DMA_DONE);
+				if (iso_packet->status) {
+					iso_packet->status = -DWC_E_NO_DATA;
+				}
+
+				/* Received data length */
+				if (!sts.b_iso_out.rxbytes) {
+					iso_packet->length =
+					    data_per_desc -
+					    sts.b_iso_out.rxbytes;
+				} else {
+					iso_packet->length =
+					    data_per_desc -
+					    sts.b_iso_out.rxbytes + (4 -
+								     dwc_ep->data_per_frame
+								     % 4);
+				}
+
+				iso_packet->offset = offset;
+
+				offset += data_per_desc;
+				dma_desc++;
+				iso_packet++;
+			}
+		}
+
+		for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
+			data_per_desc =
+			    ((j + 1) * dwc_ep->maxpacket >
+			     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+			    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+			data_per_desc +=
+			    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+
+			sts.d32 = dma_desc->status.d32;
+
+			/* Write status in iso_packet_decsriptor  */
+			iso_packet->status =
+			    sts.b_iso_out.rxsts +
+			    (sts.b_iso_out.bs ^ BS_DMA_DONE);
+			if (iso_packet->status) {
+				iso_packet->status = -DWC_E_NO_DATA;
+			}
+
+			/* Received data length */
+			iso_packet->length =
+			    dwc_ep->data_per_frame - sts.b_iso_out.rxbytes;
+
+			iso_packet->offset = offset;
+
+			offset += data_per_desc;
+			iso_packet++;
+			dma_desc++;
+		}
+
+		sts.d32 = dma_desc->status.d32;
+
+		/* Write status in iso_packet_decsriptor  */
+		iso_packet->status =
+		    sts.b_iso_out.rxsts + (sts.b_iso_out.bs ^ BS_DMA_DONE);
+		if (iso_packet->status) {
+			iso_packet->status = -DWC_E_NO_DATA;
+		}
+		/* Received data length */
+		if (!sts.b_iso_out.rxbytes) {
+			iso_packet->length =
+			    dwc_ep->data_per_frame - sts.b_iso_out.rxbytes;
+		} else {
+			iso_packet->length =
+			    dwc_ep->data_per_frame - sts.b_iso_out.rxbytes +
+			    (4 - dwc_ep->data_per_frame % 4);
+		}
+
+		iso_packet->offset = offset;
+	} else {
+/** ISO IN EP */
+
+		dma_desc =
+		    dwc_ep->iso_desc_addr +
+		    dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+
+		for (i = 0; i < dwc_ep->desc_cnt - 1; i++) {
+			sts.d32 = dma_desc->status.d32;
+
+			/* Write status in iso packet descriptor */
+			iso_packet->status =
+			    sts.b_iso_in.txsts +
+			    (sts.b_iso_in.bs ^ BS_DMA_DONE);
+			if (iso_packet->status != 0) {
+				iso_packet->status = -DWC_E_NO_DATA;
+
+			}
+			/* Bytes has been transfered */
+			iso_packet->length =
+			    dwc_ep->data_per_frame - sts.b_iso_in.txbytes;
+
+			dma_desc++;
+			iso_packet++;
+		}
+
+		sts.d32 = dma_desc->status.d32;
+		while (sts.b_iso_in.bs == BS_DMA_BUSY) {
+			sts.d32 = dma_desc->status.d32;
+		}
+
+		/* Write status in iso packet descriptor ??? do be done with ERROR codes */
+		iso_packet->status =
+		    sts.b_iso_in.txsts + (sts.b_iso_in.bs ^ BS_DMA_DONE);
+		if (iso_packet->status != 0) {
+			iso_packet->status = -DWC_E_NO_DATA;
+		}
+
+		/* Bytes has been transfered */
+		iso_packet->length =
+		    dwc_ep->data_per_frame - sts.b_iso_in.txbytes;
+	}
+}
+
+/**
+ * This function reinitialize DMA Descriptors for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP to start the transfer on.
+ *
+ */
+static void reinit_ddma_iso_xfer(dwc_otg_core_if_t * core_if, dwc_ep_t * dwc_ep)
+{
+	int i, j;
+	dwc_otg_dev_dma_desc_t *dma_desc;
+	dma_addr_t dma_ad;
+	volatile uint32_t *addr;
+	dev_dma_desc_sts_t sts = {.d32 = 0 };
+	uint32_t data_per_desc;
+
+	if (dwc_ep->is_in == 0) {
+		addr = &core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl;
+	} else {
+		addr = &core_if->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+	}
+
+	if (dwc_ep->proc_buf_num == 0) {
+		/** Buffer 0 descriptors setup */
+		dma_ad = dwc_ep->dma_addr0;
+	} else {
+		/** Buffer 1 descriptors setup */
+		dma_ad = dwc_ep->dma_addr1;
+	}
+
+	/** Reinit closed DMA Descriptors*/
+	/** ISO OUT EP */
+	if (dwc_ep->is_in == 0) {
+		dma_desc =
+		    dwc_ep->iso_desc_addr +
+		    dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+
+		sts.b_iso_out.bs = BS_HOST_READY;
+		sts.b_iso_out.rxsts = 0;
+		sts.b_iso_out.l = 0;
+		sts.b_iso_out.sp = 0;
+		sts.b_iso_out.ioc = 0;
+		sts.b_iso_out.pid = 0;
+		sts.b_iso_out.framenum = 0;
+
+		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
+		     i += dwc_ep->pkt_per_frm) {
+			for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
+				data_per_desc =
+				    ((j + 1) * dwc_ep->maxpacket >
+				     dwc_ep->
+				     data_per_frame) ? dwc_ep->data_per_frame -
+				    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+				data_per_desc +=
+				    (data_per_desc % 4) ? (4 -
+							   data_per_desc %
+							   4) : 0;
+				sts.b_iso_out.rxbytes = data_per_desc;
+				dma_desc->buf = dma_ad;
+				dma_desc->status.d32 = sts.d32;
+
+				dma_ad += data_per_desc;
+				dma_desc++;
+			}
+		}
+
+		for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
+
+			data_per_desc =
+			    ((j + 1) * dwc_ep->maxpacket >
+			     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+			    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+			data_per_desc +=
+			    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+			sts.b_iso_out.rxbytes = data_per_desc;
+
+			dma_desc->buf = dma_ad;
+			dma_desc->status.d32 = sts.d32;
+
+			dma_desc++;
+			dma_ad += data_per_desc;
+		}
+
+		sts.b_iso_out.ioc = 1;
+		sts.b_iso_out.l = dwc_ep->proc_buf_num;
+
+		data_per_desc =
+		    ((j + 1) * dwc_ep->maxpacket >
+		     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
+		    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+		data_per_desc +=
+		    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
+		sts.b_iso_out.rxbytes = data_per_desc;
+
+		dma_desc->buf = dma_ad;
+		dma_desc->status.d32 = sts.d32;
+	} else {
+/** ISO IN EP */
+
+		dma_desc =
+		    dwc_ep->iso_desc_addr +
+		    dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+
+		sts.b_iso_in.bs = BS_HOST_READY;
+		sts.b_iso_in.txsts = 0;
+		sts.b_iso_in.sp = 0;
+		sts.b_iso_in.ioc = 0;
+		sts.b_iso_in.pid = dwc_ep->pkt_per_frm;
+		sts.b_iso_in.framenum = dwc_ep->next_frame;
+		sts.b_iso_in.txbytes = dwc_ep->data_per_frame;
+		sts.b_iso_in.l = 0;
+
+		for (i = 0; i < dwc_ep->desc_cnt - 1; i++) {
+			dma_desc->buf = dma_ad;
+			dma_desc->status.d32 = sts.d32;
+
+			sts.b_iso_in.framenum += dwc_ep->bInterval;
+			dma_ad += dwc_ep->data_per_frame;
+			dma_desc++;
+		}
+
+		sts.b_iso_in.ioc = 1;
+		sts.b_iso_in.l = dwc_ep->proc_buf_num;
+
+		dma_desc->buf = dma_ad;
+		dma_desc->status.d32 = sts.d32;
+
+		dwc_ep->next_frame =
+		    sts.b_iso_in.framenum + dwc_ep->bInterval * 1;
+	}
+	dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+}
+
+/**
+ * This function is to handle Iso EP transfer complete interrupt
+ * in case Iso out packet was dropped
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP for wihich transfer complete was asserted
+ *
+ */
+static uint32_t handle_iso_out_pkt_dropped(dwc_otg_core_if_t * core_if,
+					   dwc_ep_t * dwc_ep)
+{
+	uint32_t dma_addr;
+	uint32_t drp_pkt;
+	uint32_t drp_pkt_cnt;
+	deptsiz_data_t deptsiz = {.d32 = 0 };
+	depctl_data_t depctl = {.d32 = 0 };
+	int i;
+
+	deptsiz.d32 =
+	    DWC_READ_REG32(&core_if->dev_if->
+			   out_ep_regs[dwc_ep->num]->doeptsiz);
+
+	drp_pkt = dwc_ep->pkt_cnt - deptsiz.b.pktcnt;
+	drp_pkt_cnt = dwc_ep->pkt_per_frm - (drp_pkt % dwc_ep->pkt_per_frm);
+
+	/* Setting dropped packets status */
+	for (i = 0; i < drp_pkt_cnt; ++i) {
+		dwc_ep->pkt_info[drp_pkt].status = -DWC_E_NO_DATA;
+		drp_pkt++;
+		deptsiz.b.pktcnt--;
+	}
+
+	if (deptsiz.b.pktcnt > 0) {
+		deptsiz.b.xfersize =
+		    dwc_ep->xfer_len - (dwc_ep->pkt_cnt -
+					deptsiz.b.pktcnt) * dwc_ep->maxpacket;
+	} else {
+		deptsiz.b.xfersize = 0;
+		deptsiz.b.pktcnt = 0;
+	}
+
+	DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doeptsiz,
+			deptsiz.d32);
+
+	if (deptsiz.b.pktcnt > 0) {
+		if (dwc_ep->proc_buf_num) {
+			dma_addr =
+			    dwc_ep->dma_addr1 + dwc_ep->xfer_len -
+			    deptsiz.b.xfersize;
+		} else {
+			dma_addr =
+			    dwc_ep->dma_addr0 + dwc_ep->xfer_len -
+			    deptsiz.b.xfersize;;
+		}
+
+		DWC_WRITE_REG32(&core_if->dev_if->
+				out_ep_regs[dwc_ep->num]->doepdma, dma_addr);
+
+		/** Re-enable endpoint, clear nak  */
+		depctl.d32 = 0;
+		depctl.b.epena = 1;
+		depctl.b.cnak = 1;
+
+		DWC_MODIFY_REG32(&core_if->dev_if->
+				 out_ep_regs[dwc_ep->num]->doepctl, depctl.d32,
+				 depctl.d32);
+		return 0;
+	} else {
+		return 1;
+	}
+}
+
+/**
+ * This function sets iso packets information(PTI mode)
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+static uint32_t set_iso_pkts_info(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
+{
+	int i, j;
+	dma_addr_t dma_ad;
+	iso_pkt_info_t *packet_info = ep->pkt_info;
+	uint32_t offset;
+	uint32_t frame_data;
+	deptsiz_data_t deptsiz;
+
+	if (ep->proc_buf_num == 0) {
+		/** Buffer 0 descriptors setup */
+		dma_ad = ep->dma_addr0;
+	} else {
+		/** Buffer 1 descriptors setup */
+		dma_ad = ep->dma_addr1;
+	}
+
+	if (ep->is_in) {
+		deptsiz.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
+				   dieptsiz);
+	} else {
+		deptsiz.d32 =
+		    DWC_READ_REG32(&core_if->dev_if->out_ep_regs[ep->num]->
+				   doeptsiz);
+	}
+
+	if (!deptsiz.b.xfersize) {
+		offset = 0;
+		for (i = 0; i < ep->pkt_cnt; i += ep->pkt_per_frm) {
+			frame_data = ep->data_per_frame;
+			for (j = 0; j < ep->pkt_per_frm; ++j) {
+
+				/* Packet status - is not set as initially
+				 * it is set to 0 and if packet was sent
+				 successfully, status field will remain 0*/
+
+				/* Bytes has been transfered */
+				packet_info->length =
+				    (ep->maxpacket <
+				     frame_data) ? ep->maxpacket : frame_data;
+
+				/* Received packet offset */
+				packet_info->offset = offset;
+				offset += packet_info->length;
+				frame_data -= packet_info->length;
+
+				packet_info++;
+			}
+		}
+		return 1;
+	} else {
+		/* This is a workaround for in case of Transfer Complete with
+		 * PktDrpSts interrupts merging - in this case Transfer complete
+		 * interrupt for Isoc Out Endpoint is asserted without PktDrpSts
+		 * set and with DOEPTSIZ register non zero. Investigations showed,
+		 * that this happens when Out packet is dropped, but because of
+		 * interrupts merging during first interrupt handling PktDrpSts
+		 * bit is cleared and for next merged interrupts it is not reset.
+		 * In this case SW hadles the interrupt as if PktDrpSts bit is set.
+		 */
+		if (ep->is_in) {
+			return 1;
+		} else {
+			return handle_iso_out_pkt_dropped(core_if, ep);
+		}
+	}
+}
+
+/**
+ * This function is to handle Iso EP transfer complete interrupt
+ *
+ * @param pcd The PCD
+ * @param ep The EP for which transfer complete was asserted
+ *
+ */
+static void complete_iso_ep(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
+	dwc_ep_t *dwc_ep = &ep->dwc_ep;
+	uint8_t is_last = 0;
+
+	if (ep->dwc_ep.next_frame == 0xffffffff) {
+		DWC_WARN("Next frame is not set!\n");
+		return;
+	}
+
+	if (core_if->dma_enable) {
+		if (core_if->dma_desc_enable) {
+			set_ddma_iso_pkts_info(core_if, dwc_ep);
+			reinit_ddma_iso_xfer(core_if, dwc_ep);
+			is_last = 1;
+		} else {
+			if (core_if->pti_enh_enable) {
+				if (set_iso_pkts_info(core_if, dwc_ep)) {
+					dwc_ep->proc_buf_num =
+					    (dwc_ep->proc_buf_num ^ 1) & 0x1;
+					dwc_otg_iso_ep_start_buf_transfer
+					    (core_if, dwc_ep);
+					is_last = 1;
+				}
+			} else {
+				set_current_pkt_info(core_if, dwc_ep);
+				if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+					is_last = 1;
+					dwc_ep->cur_pkt = 0;
+					dwc_ep->proc_buf_num =
+					    (dwc_ep->proc_buf_num ^ 1) & 0x1;
+					if (dwc_ep->proc_buf_num) {
+						dwc_ep->cur_pkt_addr =
+						    dwc_ep->xfer_buff1;
+						dwc_ep->cur_pkt_dma_addr =
+						    dwc_ep->dma_addr1;
+					} else {
+						dwc_ep->cur_pkt_addr =
+						    dwc_ep->xfer_buff0;
+						dwc_ep->cur_pkt_dma_addr =
+						    dwc_ep->dma_addr0;
+					}
+
+				}
+				dwc_otg_iso_ep_start_frm_transfer(core_if,
+								  dwc_ep);
+			}
+		}
+	} else {
+		set_current_pkt_info(core_if, dwc_ep);
+		if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+			is_last = 1;
+			dwc_ep->cur_pkt = 0;
+			dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+			if (dwc_ep->proc_buf_num) {
+				dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff1;
+				dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr1;
+			} else {
+				dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff0;
+				dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr0;
+			}
+
+		}
+		dwc_otg_iso_ep_start_frm_transfer(core_if, dwc_ep);
+	}
+	if (is_last)
+		dwc_otg_iso_buffer_done(pcd, ep, ep->iso_req_handle);
+}
+#endif /* DWC_EN_ISOC */
+
+/**
+ * This function handle BNA interrupt for Non Isochronous EPs
+ *
+ */
+static void dwc_otg_pcd_handle_noniso_bna(dwc_otg_pcd_ep_t * ep)
+{
+	dwc_ep_t *dwc_ep = &ep->dwc_ep;
+	volatile uint32_t *addr;
+	depctl_data_t depctl = {.d32 = 0 };
+	dwc_otg_pcd_t *pcd = ep->pcd;
+	dwc_otg_dev_dma_desc_t *dma_desc;
+	dev_dma_desc_sts_t sts = {.d32 = 0 };
+	dwc_otg_core_if_t *core_if = ep->pcd->core_if;
+	int i, start;
+
+	if (!dwc_ep->desc_cnt)
+		DWC_WARN("Ep%d %s Descriptor count = %d \n", dwc_ep->num,
+			 (dwc_ep->is_in ? "IN" : "OUT"), dwc_ep->desc_cnt);
+
+	if (core_if->core_params->cont_on_bna && !dwc_ep->is_in
+							&& dwc_ep->type != DWC_OTG_EP_TYPE_CONTROL) {
+		uint32_t doepdma;
+		dwc_otg_dev_out_ep_regs_t *out_regs =
+			core_if->dev_if->out_ep_regs[dwc_ep->num];
+		doepdma = DWC_READ_REG32(&(out_regs->doepdma));
+		start = (doepdma - dwc_ep->dma_desc_addr)/sizeof(dwc_otg_dev_dma_desc_t);
+		dma_desc = &(dwc_ep->desc_addr[start]);
+	} else {
+		start = 0;
+		dma_desc = dwc_ep->desc_addr;
+	}
+
+
+	for (i = start; i < dwc_ep->desc_cnt; ++i, ++dma_desc) {
+		sts.d32 = dma_desc->status.d32;
+		sts.b.bs = BS_HOST_READY;
+		dma_desc->status.d32 = sts.d32;
+	}
+
+	if (dwc_ep->is_in == 0) {
+		addr =
+		    &GET_CORE_IF(pcd)->dev_if->out_ep_regs[dwc_ep->num]->
+		    doepctl;
+	} else {
+		addr =
+		    &GET_CORE_IF(pcd)->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+	}
+	depctl.b.epena = 1;
+	depctl.b.cnak = 1;
+	DWC_MODIFY_REG32(addr, 0, depctl.d32);
+}
+
+/**
+ * This function handles EP0 Control transfers.
+ *
+ * The state of the control transfers are tracked in
+ * <code>ep0state</code>.
+ */
+static void handle_ep0(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+	dev_dma_desc_sts_t desc_sts;
+	deptsiz0_data_t deptsiz;
+	uint32_t byte_count;
+
+#ifdef DEBUG_EP0
+	DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__);
+	print_ep0_state(pcd);
+#endif
+
+//      DWC_PRINTF("HANDLE EP0\n");
+
+	switch (pcd->ep0state) {
+	case EP0_DISCONNECT:
+		break;
+
+	case EP0_IDLE:
+		pcd->request_config = 0;
+
+		pcd_setup(pcd);
+		break;
+
+	case EP0_IN_DATA_PHASE:
+#ifdef DEBUG_EP0
+		DWC_DEBUGPL(DBG_PCD, "DATA_IN EP%d-%s: type=%d, mps=%d\n",
+			    ep0->dwc_ep.num, (ep0->dwc_ep.is_in ? "IN" : "OUT"),
+			    ep0->dwc_ep.type, ep0->dwc_ep.maxpacket);
+#endif
+
+		if (core_if->dma_enable != 0) {
+			/*
+			 * For EP0 we can only program 1 packet at a time so we
+			 * need to do the make calculations after each complete.
+			 * Call write_packet to make the calculations, as in
+			 * slave mode, and use those values to determine if we
+			 * can complete.
+			 */
+			if (core_if->dma_desc_enable == 0) {
+				deptsiz.d32 =
+				    DWC_READ_REG32(&core_if->
+						   dev_if->in_ep_regs[0]->
+						   dieptsiz);
+				byte_count =
+				    ep0->dwc_ep.xfer_len - deptsiz.b.xfersize;
+			} else {
+				desc_sts =
+				    core_if->dev_if->in_desc_addr->status;
+				byte_count =
+				    ep0->dwc_ep.xfer_len - desc_sts.b.bytes;
+			}
+			ep0->dwc_ep.xfer_count += byte_count;
+			ep0->dwc_ep.xfer_buff += byte_count;
+			ep0->dwc_ep.dma_addr += byte_count;
+		}
+		if (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len) {
+			dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
+						      &ep0->dwc_ep);
+			DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
+		} else if (ep0->dwc_ep.sent_zlp) {
+			dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
+						      &ep0->dwc_ep);
+			ep0->dwc_ep.sent_zlp = 0;
+			DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER sent zlp\n");
+		} else {
+			ep0_complete_request(ep0);
+			DWC_DEBUGPL(DBG_PCD, "COMPLETE TRANSFER\n");
+		}
+		break;
+	case EP0_OUT_DATA_PHASE:
+#ifdef DEBUG_EP0
+		DWC_DEBUGPL(DBG_PCD, "DATA_OUT EP%d-%s: type=%d, mps=%d\n",
+			    ep0->dwc_ep.num, (ep0->dwc_ep.is_in ? "IN" : "OUT"),
+			    ep0->dwc_ep.type, ep0->dwc_ep.maxpacket);
+#endif
+		if (core_if->dma_enable != 0) {
+			if (core_if->dma_desc_enable == 0) {
+				deptsiz.d32 =
+				    DWC_READ_REG32(&core_if->
+						   dev_if->out_ep_regs[0]->
+						   doeptsiz);
+				byte_count =
+				    ep0->dwc_ep.maxpacket - deptsiz.b.xfersize;
+			} else {
+				desc_sts =
+				    core_if->dev_if->out_desc_addr->status;
+				byte_count =
+				    ep0->dwc_ep.maxpacket - desc_sts.b.bytes;
+			}
+			ep0->dwc_ep.xfer_count += byte_count;
+			ep0->dwc_ep.xfer_buff += byte_count;
+			ep0->dwc_ep.dma_addr += byte_count;
+		}
+		if (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len) {
+			dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
+						      &ep0->dwc_ep);
+			DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
+		} else if (ep0->dwc_ep.sent_zlp) {
+			dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
+						      &ep0->dwc_ep);
+			ep0->dwc_ep.sent_zlp = 0;
+			DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER sent zlp\n");
+		} else {
+			ep0_complete_request(ep0);
+			DWC_DEBUGPL(DBG_PCD, "COMPLETE TRANSFER\n");
+		}
+		break;
+
+	case EP0_IN_STATUS_PHASE:
+	case EP0_OUT_STATUS_PHASE:
+		DWC_DEBUGPL(DBG_PCD, "CASE: EP0_STATUS\n");
+		ep0_complete_request(ep0);
+		pcd->ep0state = EP0_IDLE;
+		ep0->stopped = 1;
+		ep0->dwc_ep.is_in = 0;	/* OUT for next SETUP */
+
+		/* Prepare for more SETUP Packets */
+		if (core_if->dma_enable) {
+			ep0_out_start(core_if, pcd);
+		}
+		break;
+
+	case EP0_STALL:
+		DWC_ERROR("EP0 STALLed, should not get here pcd_setup()\n");
+		break;
+	}
+#ifdef DEBUG_EP0
+	print_ep0_state(pcd);
+#endif
+}
+
+/**
+ * Restart transfer
+ */
+static void restart_transfer(dwc_otg_pcd_t * pcd, const uint32_t epnum)
+{
+	dwc_otg_core_if_t *core_if;
+	dwc_otg_dev_if_t *dev_if;
+	deptsiz_data_t dieptsiz = {.d32 = 0 };
+	dwc_otg_pcd_ep_t *ep;
+
+	ep = get_in_ep(pcd, epnum);
+
+#ifdef DWC_EN_ISOC
+	if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+		return;
+	}
+#endif /* DWC_EN_ISOC  */
+
+	core_if = GET_CORE_IF(pcd);
+	dev_if = core_if->dev_if;
+
+	dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dieptsiz);
+
+	DWC_DEBUGPL(DBG_PCD, "xfer_buff=%p xfer_count=%0x xfer_len=%0x"
+		    " stopped=%d\n", ep->dwc_ep.xfer_buff,
+		    ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len, ep->stopped);
+	/*
+	 * If xfersize is 0 and pktcnt in not 0, resend the last packet.
+	 */
+	if (dieptsiz.b.pktcnt && dieptsiz.b.xfersize == 0 &&
+	    ep->dwc_ep.start_xfer_buff != 0) {
+		if (ep->dwc_ep.total_len <= ep->dwc_ep.maxpacket) {
+			ep->dwc_ep.xfer_count = 0;
+			ep->dwc_ep.xfer_buff = ep->dwc_ep.start_xfer_buff;
+			ep->dwc_ep.xfer_len = ep->dwc_ep.xfer_count;
+		} else {
+			ep->dwc_ep.xfer_count -= ep->dwc_ep.maxpacket;
+			/* convert packet size to dwords. */
+			ep->dwc_ep.xfer_buff -= ep->dwc_ep.maxpacket;
+			ep->dwc_ep.xfer_len = ep->dwc_ep.xfer_count;
+		}
+		ep->stopped = 0;
+		DWC_DEBUGPL(DBG_PCD, "xfer_buff=%p xfer_count=%0x "
+			    "xfer_len=%0x stopped=%d\n",
+			    ep->dwc_ep.xfer_buff,
+			    ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len,
+			    ep->stopped);
+		if (epnum == 0) {
+			dwc_otg_ep0_start_transfer(core_if, &ep->dwc_ep);
+		} else {
+			dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
+		}
+	}
+}
+
+/*
+ * This function create new nextep sequnce based on Learn Queue.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void predict_nextep_seq( dwc_otg_core_if_t * core_if)
+{
+	dwc_otg_device_global_regs_t *dev_global_regs =
+	    core_if->dev_if->dev_global_regs;
+	const uint32_t TOKEN_Q_DEPTH = core_if->hwcfg2.b.dev_token_q_depth;
+	/* Number of Token Queue Registers */
+	const int DTKNQ_REG_CNT = (TOKEN_Q_DEPTH + 7) / 8;
+	dtknq1_data_t dtknqr1;
+	uint32_t in_tkn_epnums[4];
+	uint8_t seqnum[MAX_EPS_CHANNELS];
+	uint8_t intkn_seq[TOKEN_Q_DEPTH];
+	grstctl_t resetctl = {.d32 = 0 };
+	uint8_t temp;
+	int ndx = 0;
+	int start = 0;
+	int end = 0;
+	int sort_done = 0;
+	int i = 0;
+	volatile uint32_t *addr = &dev_global_regs->dtknqr1;
+
+
+	DWC_DEBUGPL(DBG_PCD,"dev_token_q_depth=%d\n",TOKEN_Q_DEPTH);
+
+	/* Read the DTKNQ Registers */
+	for (i = 0; i < DTKNQ_REG_CNT; i++) {
+		in_tkn_epnums[i] = DWC_READ_REG32(addr);
+		DWC_DEBUGPL(DBG_PCDV, "DTKNQR%d=0x%08x\n", i + 1,
+			    in_tkn_epnums[i]);
+		if (addr == &dev_global_regs->dvbusdis) {
+			addr = &dev_global_regs->dtknqr3_dthrctl;
+		} else {
+			++addr;
+		}
+
+	}
+
+	/* Copy the DTKNQR1 data to the bit field. */
+	dtknqr1.d32 = in_tkn_epnums[0];
+	if (dtknqr1.b.wrap_bit) {
+		ndx = dtknqr1.b.intknwptr;
+		end = ndx -1;
+		if (end < 0)
+			end = TOKEN_Q_DEPTH -1;
+	} else {
+		ndx = 0;
+		end = dtknqr1.b.intknwptr -1;
+		if (end < 0)
+			end = 0;
+	}
+	start = ndx;
+
+	/* Fill seqnum[] by initial values: EP number + 31 */
+	for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+		seqnum[i] = i +31;
+	}
+
+	/* Fill intkn_seq[] from in_tkn_epnums[0] */
+	for (i=0; i < 6; i++)
+		intkn_seq[i] = (in_tkn_epnums[0] >> ((7-i) * 4)) & 0xf;
+
+	if (TOKEN_Q_DEPTH > 6) {
+		/* Fill intkn_seq[] from in_tkn_epnums[1] */
+		for (i=6; i < 14; i++)
+			intkn_seq[i] =
+			    (in_tkn_epnums[1] >> ((7 - (i - 6)) * 4)) & 0xf;
+	}
+
+	if (TOKEN_Q_DEPTH > 14) {
+		/* Fill intkn_seq[] from in_tkn_epnums[1] */
+		for (i=14; i < 22; i++)
+			intkn_seq[i] =
+			    (in_tkn_epnums[2] >> ((7 - (i - 14)) * 4)) & 0xf;
+	}
+
+	if (TOKEN_Q_DEPTH > 22) {
+		/* Fill intkn_seq[] from in_tkn_epnums[1] */
+		for (i=22; i < 30; i++)
+			intkn_seq[i] =
+			    (in_tkn_epnums[3] >> ((7 - (i - 22)) * 4)) & 0xf;
+	}
+
+	DWC_DEBUGPL(DBG_PCDV, "%s start=%d end=%d intkn_seq[]:\n", __func__,
+		    start, end);
+	for (i=0; i<TOKEN_Q_DEPTH; i++)
+		DWC_DEBUGPL(DBG_PCDV,"%d\n", intkn_seq[i]);
+
+	/* Update seqnum based on intkn_seq[] */
+	i = 0;
+	do {
+		seqnum[intkn_seq[ndx]] = i;
+		ndx++;
+		i++;
+		if (ndx == TOKEN_Q_DEPTH)
+			ndx = 0;
+	} while ( i < TOKEN_Q_DEPTH );
+
+	/* Mark non active EP's in seqnum[] by 0xff */
+	for (i=0; i<=core_if->dev_if->num_in_eps; i++) {
+		if (core_if->nextep_seq[i] == 0xff )
+			seqnum[i] = 0xff;
+	}
+
+	/* Sort seqnum[] */
+	sort_done = 0;
+	while (!sort_done) {
+		sort_done = 1;
+		for (i=0; i<core_if->dev_if->num_in_eps; i++) {
+			if (seqnum[i] > seqnum[i+1]) {
+				temp = seqnum[i];
+				seqnum[i] = seqnum[i+1];
+				seqnum[i+1] = temp;
+				sort_done = 0;
+			}
+		}
+	}
+
+	ndx = start + seqnum[0];
+	if (ndx >= TOKEN_Q_DEPTH)
+		ndx = ndx % TOKEN_Q_DEPTH;
+	core_if->first_in_nextep_seq = intkn_seq[ndx];
+
+	/* Update seqnum[] by EP numbers  */
+	for (i=0; i<=core_if->dev_if->num_in_eps; i++) {
+		ndx = start + i;
+		if (seqnum[i] < 31) {
+			ndx = start + seqnum[i];
+			if (ndx >= TOKEN_Q_DEPTH)
+				ndx = ndx % TOKEN_Q_DEPTH;
+			seqnum[i] = intkn_seq[ndx];
+		} else {
+			if (seqnum[i] < 0xff) {
+				seqnum[i] = seqnum[i] - 31;
+			} else {
+				break;
+			}
+		}
+	}
+
+	/* Update nextep_seq[] based on seqnum[] */
+	for (i=0; i<core_if->dev_if->num_in_eps; i++) {
+		if (seqnum[i] != 0xff) {
+			if (seqnum[i+1] != 0xff) {
+				core_if->nextep_seq[seqnum[i]] = seqnum[i+1];
+			} else {
+				core_if->nextep_seq[seqnum[i]] = core_if->first_in_nextep_seq;
+				break;
+			}
+		} else {
+			break;
+		}
+	}
+
+	DWC_DEBUGPL(DBG_PCDV, "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
+		__func__, core_if->first_in_nextep_seq);
+	for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
+		DWC_DEBUGPL(DBG_PCDV,"%2d\n", core_if->nextep_seq[i]);
+	}
+
+	/* Flush the Learning Queue */
+	resetctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->grstctl);
+	resetctl.b.intknqflsh = 1;
+	DWC_WRITE_REG32(&core_if->core_global_regs->grstctl, resetctl.d32);
+
+
+}
+
+/**
+ * handle the IN EP disable interrupt.
+ */
+static inline void handle_in_ep_disable_intr(dwc_otg_pcd_t * pcd,
+					     const uint32_t epnum)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	deptsiz_data_t dieptsiz = {.d32 = 0 };
+	dctl_data_t dctl = {.d32 = 0 };
+	dwc_otg_pcd_ep_t *ep;
+	dwc_ep_t *dwc_ep;
+	gintmsk_data_t gintmsk_data;
+	depctl_data_t depctl;
+	uint32_t diepdma;
+	uint32_t remain_to_transfer = 0;
+	uint8_t i;
+	uint32_t xfer_size;
+
+	ep = get_in_ep(pcd, epnum);
+	dwc_ep = &ep->dwc_ep;
+
+	if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+		dwc_otg_flush_tx_fifo(core_if, dwc_ep->tx_fifo_num);
+		complete_ep(ep);
+		return;
+	}
+
+	DWC_DEBUGPL(DBG_PCD, "diepctl%d=%0x\n", epnum,
+		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl));
+	dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dieptsiz);
+	depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl);
+
+	DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n",
+		    dieptsiz.b.pktcnt, dieptsiz.b.xfersize);
+
+	if ((core_if->start_predict == 0) || (depctl.b.eptype & 1)) {
+		if (ep->stopped) {
+			if (core_if->en_multiple_tx_fifo)
+				/* Flush the Tx FIFO */
+				dwc_otg_flush_tx_fifo(core_if, dwc_ep->tx_fifo_num);
+			/* Clear the Global IN NP NAK */
+			dctl.d32 = 0;
+			dctl.b.cgnpinnak = 1;
+			DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
+			/* Restart the transaction */
+			if (dieptsiz.b.pktcnt != 0 || dieptsiz.b.xfersize != 0) {
+				restart_transfer(pcd, epnum);
+			}
+		} else {
+			/* Restart the transaction */
+			if (dieptsiz.b.pktcnt != 0 || dieptsiz.b.xfersize != 0) {
+				restart_transfer(pcd, epnum);
+			}
+			DWC_DEBUGPL(DBG_ANY, "STOPPED!!!\n");
+		}
+		return;
+	}
+
+	if (core_if->start_predict > 2) {	// NP IN EP
+		core_if->start_predict--;
+		return;
+	}
+
+	core_if->start_predict--;
+
+	if (core_if->start_predict == 1) {	// All NP IN Ep's disabled now
+
+		predict_nextep_seq(core_if);
+
+		/* Update all active IN EP's NextEP field based of nextep_seq[] */
+		for ( i = 0; i <= core_if->dev_if->num_in_eps; i++) {
+			depctl.d32 =
+			    DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+			if (core_if->nextep_seq[i] != 0xff) {	// Active NP IN EP
+				depctl.b.nextep = core_if->nextep_seq[i];
+				DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
+			}
+		}
+		/* Flush Shared NP TxFIFO */
+		dwc_otg_flush_tx_fifo(core_if, 0);
+		/* Rewind buffers */
+		if (!core_if->dma_desc_enable) {
+			i = core_if->first_in_nextep_seq;
+			do {
+				ep = get_in_ep(pcd, i);
+				dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->dieptsiz);
+				xfer_size = ep->dwc_ep.total_len - ep->dwc_ep.xfer_count;
+				if (xfer_size > ep->dwc_ep.maxxfer)
+					xfer_size = ep->dwc_ep.maxxfer;
+				depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+				if (dieptsiz.b.pktcnt != 0) {
+					if (xfer_size == 0) {
+						remain_to_transfer = 0;
+					} else {
+						if ((xfer_size % ep->dwc_ep.maxpacket) == 0) {
+							remain_to_transfer =
+								dieptsiz.b.pktcnt * ep->dwc_ep.maxpacket;
+						} else {
+							remain_to_transfer = ((dieptsiz.b.pktcnt -1) * ep->dwc_ep.maxpacket)
+								+ (xfer_size % ep->dwc_ep.maxpacket);
+						}
+					}
+					diepdma = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepdma);
+					dieptsiz.b.xfersize = remain_to_transfer;
+					DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->dieptsiz, dieptsiz.d32);
+					diepdma = ep->dwc_ep.dma_addr + (xfer_size - remain_to_transfer);
+					DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepdma, diepdma);
+				}
+				i = core_if->nextep_seq[i];
+			} while (i != core_if->first_in_nextep_seq);
+		} else { // dma_desc_enable
+				DWC_PRINTF("%s Learning Queue not supported in DDMA\n", __func__);
+		}
+
+		/* Restart transfers in predicted sequences */
+		i = core_if->first_in_nextep_seq;
+		do {
+			dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->dieptsiz);
+			depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+			if (dieptsiz.b.pktcnt != 0) {
+				depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+				depctl.b.epena = 1;
+				depctl.b.cnak = 1;
+				DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
+			}
+			i = core_if->nextep_seq[i];
+		} while (i != core_if->first_in_nextep_seq);
+
+		/* Clear the global non-periodic IN NAK handshake */
+		dctl.d32 = 0;
+		dctl.b.cgnpinnak = 1;
+		DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
+
+		/* Unmask EP Mismatch interrupt */
+		gintmsk_data.d32 = 0;
+		gintmsk_data.b.epmismatch = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, gintmsk_data.d32);
+
+		core_if->start_predict = 0;
+
+	}
+}
+
+/**
+ * Handler for the IN EP timeout handshake interrupt.
+ */
+static inline void handle_in_ep_timeout_intr(dwc_otg_pcd_t * pcd,
+					     const uint32_t epnum)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+
+#ifdef DEBUG
+	deptsiz_data_t dieptsiz = {.d32 = 0 };
+	uint32_t num = 0;
+#endif
+	dctl_data_t dctl = {.d32 = 0 };
+	dwc_otg_pcd_ep_t *ep;
+
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	ep = get_in_ep(pcd, epnum);
+
+	/* Disable the NP Tx Fifo Empty Interrrupt */
+	if (!core_if->dma_enable) {
+		intr_mask.b.nptxfempty = 1;
+		DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
+				 intr_mask.d32, 0);
+	}
+	/** @todo NGS Check EP type.
+	 * Implement for Periodic EPs */
+	/*
+	 * Non-periodic EP
+	 */
+	/* Enable the Global IN NAK Effective Interrupt */
+	intr_mask.b.ginnakeff = 1;
+	DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, intr_mask.d32);
+
+	/* Set Global IN NAK */
+	dctl.b.sgnpinnak = 1;
+	DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
+
+	ep->stopped = 1;
+
+#ifdef DEBUG
+	dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[num]->dieptsiz);
+	DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n",
+		    dieptsiz.b.pktcnt, dieptsiz.b.xfersize);
+#endif
+
+#ifdef DISABLE_PERIODIC_EP
+	/*
+	 * Set the NAK bit for this EP to
+	 * start the disable process.
+	 */
+	diepctl.d32 = 0;
+	diepctl.b.snak = 1;
+	DWC_MODIFY_REG32(&dev_if->in_ep_regs[num]->diepctl, diepctl.d32,
+			 diepctl.d32);
+	ep->disabling = 1;
+	ep->stopped = 1;
+#endif
+}
+
+/**
+ * Handler for the IN EP NAK interrupt.
+ */
+static inline int32_t handle_in_ep_nak_intr(dwc_otg_pcd_t * pcd,
+					    const uint32_t epnum)
+{
+	/** @todo implement ISR */
+	dwc_otg_core_if_t *core_if;
+	diepmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "IN EP NAK");
+	core_if = GET_CORE_IF(pcd);
+	intr_mask.b.nak = 1;
+
+	if (core_if->multiproc_int_enable) {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+				 diepeachintmsk[epnum], intr_mask.d32, 0);
+	} else {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->diepmsk,
+				 intr_mask.d32, 0);
+	}
+
+	return 1;
+}
+
+/**
+ * Handler for the OUT EP Babble interrupt.
+ */
+static inline int32_t handle_out_ep_babble_intr(dwc_otg_pcd_t * pcd,
+						const uint32_t epnum)
+{
+	/** @todo implement ISR */
+	dwc_otg_core_if_t *core_if;
+	doepmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n",
+		   "OUT EP Babble");
+	core_if = GET_CORE_IF(pcd);
+	intr_mask.b.babble = 1;
+
+	if (core_if->multiproc_int_enable) {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+				 doepeachintmsk[epnum], intr_mask.d32, 0);
+	} else {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
+				 intr_mask.d32, 0);
+	}
+
+	return 1;
+}
+
+/**
+ * Handler for the OUT EP NAK interrupt.
+ */
+static inline int32_t handle_out_ep_nak_intr(dwc_otg_pcd_t * pcd,
+					     const uint32_t epnum)
+{
+	/** @todo implement ISR */
+	dwc_otg_core_if_t *core_if;
+	doepmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_DEBUGPL(DBG_ANY, "INTERRUPT Handler not implemented for %s\n", "OUT EP NAK");
+	core_if = GET_CORE_IF(pcd);
+	intr_mask.b.nak = 1;
+
+	if (core_if->multiproc_int_enable) {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+				 doepeachintmsk[epnum], intr_mask.d32, 0);
+	} else {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
+				 intr_mask.d32, 0);
+	}
+
+	return 1;
+}
+
+/**
+ * Handler for the OUT EP NYET interrupt.
+ */
+static inline int32_t handle_out_ep_nyet_intr(dwc_otg_pcd_t * pcd,
+					      const uint32_t epnum)
+{
+	/** @todo implement ISR */
+	dwc_otg_core_if_t *core_if;
+	doepmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "OUT EP NYET");
+	core_if = GET_CORE_IF(pcd);
+	intr_mask.b.nyet = 1;
+
+	if (core_if->multiproc_int_enable) {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
+				 doepeachintmsk[epnum], intr_mask.d32, 0);
+	} else {
+		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
+				 intr_mask.d32, 0);
+	}
+
+	return 1;
+}
+
+/**
+ * This interrupt indicates that an IN EP has a pending Interrupt.
+ * The sequence for handling the IN EP interrupt is shown below:
+ * -#	Read the Device All Endpoint Interrupt register
+ * -#	Repeat the following for each IN EP interrupt bit set (from
+ *		LSB to MSB).
+ * -#	Read the Device Endpoint Interrupt (DIEPINTn) register
+ * -#	If "Transfer Complete" call the request complete function
+ * -#	If "Endpoint Disabled" complete the EP disable procedure.
+ * -#	If "AHB Error Interrupt" log error
+ * -#	If "Time-out Handshake" log error
+ * -#	If "IN Token Received when TxFIFO Empty" write packet to Tx
+ *		FIFO.
+ * -#	If "IN Token EP Mismatch" (disable, this is handled by EP
+ *		Mismatch Interrupt)
+ */
+static int32_t dwc_otg_pcd_handle_in_ep_intr(dwc_otg_pcd_t * pcd)
+{
+#define CLEAR_IN_EP_INTR(__core_if,__epnum,__intr) \
+do { \
+		diepint_data_t diepint = {.d32=0}; \
+		diepint.b.__intr = 1; \
+		DWC_WRITE_REG32(&__core_if->dev_if->in_ep_regs[__epnum]->diepint, \
+		diepint.d32); \
+} while (0)
+
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+	diepint_data_t diepint = {.d32 = 0 };
+	depctl_data_t depctl = {.d32 = 0 };
+	uint32_t ep_intr;
+	uint32_t epnum = 0;
+	dwc_otg_pcd_ep_t *ep;
+	dwc_ep_t *dwc_ep;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, pcd);
+
+	/* Read in the device interrupt bits */
+	ep_intr = dwc_otg_read_dev_all_in_ep_intr(core_if);
+
+	/* Service the Device IN interrupts for each endpoint */
+	while (ep_intr) {
+		if (ep_intr & 0x1) {
+			uint32_t empty_msk;
+			/* Get EP pointer */
+			ep = get_in_ep(pcd, epnum);
+			dwc_ep = &ep->dwc_ep;
+
+			depctl.d32 =
+			    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl);
+			empty_msk =
+			    DWC_READ_REG32(&dev_if->
+					   dev_global_regs->dtknqr4_fifoemptymsk);
+
+			DWC_DEBUGPL(DBG_PCDV,
+				    "IN EP INTERRUPT - %d\nepmty_msk - %8x  diepctl - %8x\n",
+				    epnum, empty_msk, depctl.d32);
+
+			DWC_DEBUGPL(DBG_PCD,
+				    "EP%d-%s: type=%d, mps=%d\n",
+				    dwc_ep->num, (dwc_ep->is_in ? "IN" : "OUT"),
+				    dwc_ep->type, dwc_ep->maxpacket);
+
+			diepint.d32 =
+			    dwc_otg_read_dev_in_ep_intr(core_if, dwc_ep);
+
+			DWC_DEBUGPL(DBG_PCDV,
+				    "EP %d Interrupt Register - 0x%x\n", epnum,
+				    diepint.d32);
+			/* Transfer complete */
+			if (diepint.b.xfercompl) {
+				/* Disable the NP Tx FIFO Empty
+				 * Interrupt */
+				if (core_if->en_multiple_tx_fifo == 0) {
+					intr_mask.b.nptxfempty = 1;
+					DWC_MODIFY_REG32
+					    (&core_if->core_global_regs->gintmsk,
+					     intr_mask.d32, 0);
+				} else {
+					/* Disable the Tx FIFO Empty Interrupt for this EP */
+					uint32_t fifoemptymsk =
+					    0x1 << dwc_ep->num;
+					DWC_MODIFY_REG32(&core_if->
+							 dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+							 fifoemptymsk, 0);
+				}
+				/* Clear the bit in DIEPINTn for this interrupt */
+				CLEAR_IN_EP_INTR(core_if, epnum, xfercompl);
+
+				/* Complete the transfer */
+				if (epnum == 0) {
+					handle_ep0(pcd);
+				}
+#ifdef DWC_EN_ISOC
+				else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+					if (!ep->stopped)
+						complete_iso_ep(pcd, ep);
+				}
+#endif /* DWC_EN_ISOC */
+#ifdef DWC_UTE_PER_IO
+				else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+					if (!ep->stopped)
+						complete_xiso_ep(ep);
+				}
+#endif /* DWC_UTE_PER_IO */
+				else {
+					if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC &&
+							dwc_ep->bInterval > 1) {
+						dwc_ep->frame_num += dwc_ep->bInterval;
+						if (dwc_ep->frame_num > 0x3FFF)
+						{
+							dwc_ep->frm_overrun = 1;
+							dwc_ep->frame_num &= 0x3FFF;
+						} else
+							dwc_ep->frm_overrun = 0;
+					}
+					complete_ep(ep);
+					if(diepint.b.nak)
+						CLEAR_IN_EP_INTR(core_if, epnum, nak);
+				}
+			}
+			/* Endpoint disable      */
+			if (diepint.b.epdisabled) {
+				DWC_DEBUGPL(DBG_ANY, "EP%d IN disabled\n",
+					    epnum);
+				handle_in_ep_disable_intr(pcd, epnum);
+
+				/* Clear the bit in DIEPINTn for this interrupt */
+				CLEAR_IN_EP_INTR(core_if, epnum, epdisabled);
+			}
+			/* AHB Error */
+			if (diepint.b.ahberr) {
+				DWC_ERROR("EP%d IN AHB Error\n", epnum);
+				/* Clear the bit in DIEPINTn for this interrupt */
+				CLEAR_IN_EP_INTR(core_if, epnum, ahberr);
+			}
+			/* TimeOUT Handshake (non-ISOC IN EPs) */
+			if (diepint.b.timeout) {
+				DWC_ERROR("EP%d IN Time-out\n", epnum);
+				handle_in_ep_timeout_intr(pcd, epnum);
+
+				CLEAR_IN_EP_INTR(core_if, epnum, timeout);
+			}
+			/** IN Token received with TxF Empty */
+			if (diepint.b.intktxfemp) {
+				DWC_DEBUGPL(DBG_ANY,
+					    "EP%d IN TKN TxFifo Empty\n",
+					    epnum);
+				if (!ep->stopped && epnum != 0) {
+
+					diepmsk_data_t diepmsk = {.d32 = 0 };
+					diepmsk.b.intktxfemp = 1;
+
+					if (core_if->multiproc_int_enable) {
+						DWC_MODIFY_REG32
+						    (&dev_if->dev_global_regs->diepeachintmsk
+						     [epnum], diepmsk.d32, 0);
+					} else {
+						DWC_MODIFY_REG32
+						    (&dev_if->dev_global_regs->diepmsk,
+						     diepmsk.d32, 0);
+					}
+				} else if (core_if->dma_desc_enable
+					   && epnum == 0
+					   && pcd->ep0state ==
+					   EP0_OUT_STATUS_PHASE) {
+					// EP0 IN set STALL
+					depctl.d32 =
+					    DWC_READ_REG32(&dev_if->in_ep_regs
+							   [epnum]->diepctl);
+
+					/* set the disable and stall bits */
+					if (depctl.b.epena) {
+						depctl.b.epdis = 1;
+					}
+					depctl.b.stall = 1;
+					DWC_WRITE_REG32(&dev_if->in_ep_regs
+							[epnum]->diepctl,
+							depctl.d32);
+				}
+				CLEAR_IN_EP_INTR(core_if, epnum, intktxfemp);
+			}
+			/** IN Token Received with EP mismatch */
+			if (diepint.b.intknepmis) {
+				DWC_DEBUGPL(DBG_ANY,
+					    "EP%d IN TKN EP Mismatch\n", epnum);
+				CLEAR_IN_EP_INTR(core_if, epnum, intknepmis);
+			}
+			/** IN Endpoint NAK Effective */
+			if (diepint.b.inepnakeff) {
+				DWC_DEBUGPL(DBG_ANY,
+					    "EP%d IN EP NAK Effective\n",
+					    epnum);
+				/* Periodic EP */
+				if (ep->disabling) {
+					depctl.d32 = 0;
+					depctl.b.snak = 1;
+					depctl.b.epdis = 1;
+					DWC_MODIFY_REG32(&dev_if->in_ep_regs
+							 [epnum]->diepctl,
+							 depctl.d32,
+							 depctl.d32);
+				}
+				CLEAR_IN_EP_INTR(core_if, epnum, inepnakeff);
+
+			}
+
+			/** IN EP Tx FIFO Empty Intr */
+			if (diepint.b.emptyintr) {
+				DWC_DEBUGPL(DBG_ANY,
+					    "EP%d Tx FIFO Empty Intr \n",
+					    epnum);
+				write_empty_tx_fifo(pcd, epnum);
+
+				CLEAR_IN_EP_INTR(core_if, epnum, emptyintr);
+
+			}
+
+			/** IN EP BNA Intr */
+			if (diepint.b.bna) {
+				CLEAR_IN_EP_INTR(core_if, epnum, bna);
+				if (core_if->dma_desc_enable) {
+#ifdef DWC_EN_ISOC
+					if (dwc_ep->type ==
+					    DWC_OTG_EP_TYPE_ISOC) {
+						/*
+						 * This checking is performed to prevent first "false" BNA
+						 * handling occuring right after reconnect
+						 */
+						if (dwc_ep->next_frame !=
+						    0xffffffff)
+							dwc_otg_pcd_handle_iso_bna(ep);
+					} else
+#endif				/* DWC_EN_ISOC */
+					{
+						dwc_otg_pcd_handle_noniso_bna(ep);
+					}
+				}
+			}
+			/* NAK Interrutp */
+			if (diepint.b.nak) {
+				DWC_DEBUGPL(DBG_ANY, "EP%d IN NAK Interrupt\n",
+					    epnum);
+				if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+					depctl_data_t depctl;
+					if (ep->dwc_ep.frame_num == 0xFFFFFFFF) {
+						ep->dwc_ep.frame_num = core_if->frame_num;
+						if (ep->dwc_ep.bInterval > 1) {
+							depctl.d32 = 0;
+							depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl);
+							if (ep->dwc_ep.frame_num & 0x1) {
+								depctl.b.setd1pid = 1;
+								depctl.b.setd0pid = 0;
+							} else {
+								depctl.b.setd0pid = 1;
+								depctl.b.setd1pid = 0;
+							}
+							DWC_WRITE_REG32(&dev_if->in_ep_regs[epnum]->diepctl, depctl.d32);
+						}
+						start_next_request(ep);
+					}
+					ep->dwc_ep.frame_num += ep->dwc_ep.bInterval;
+					if (dwc_ep->frame_num > 0x3FFF)	{
+						dwc_ep->frm_overrun = 1;
+						dwc_ep->frame_num &= 0x3FFF;
+					} else
+						dwc_ep->frm_overrun = 0;
+				}
+
+				CLEAR_IN_EP_INTR(core_if, epnum, nak);
+			}
+		}
+		epnum++;
+		ep_intr >>= 1;
+	}
+
+	return 1;
+#undef CLEAR_IN_EP_INTR
+}
+
+/**
+ * This interrupt indicates that an OUT EP has a pending Interrupt.
+ * The sequence for handling the OUT EP interrupt is shown below:
+ * -#	Read the Device All Endpoint Interrupt register
+ * -#	Repeat the following for each OUT EP interrupt bit set (from
+ *		LSB to MSB).
+ * -#	Read the Device Endpoint Interrupt (DOEPINTn) register
+ * -#	If "Transfer Complete" call the request complete function
+ * -#	If "Endpoint Disabled" complete the EP disable procedure.
+ * -#	If "AHB Error Interrupt" log error
+ * -#	If "Setup Phase Done" process Setup Packet (See Standard USB
+ *		Command Processing)
+ */
+static int32_t dwc_otg_pcd_handle_out_ep_intr(dwc_otg_pcd_t * pcd)
+{
+#define CLEAR_OUT_EP_INTR(__core_if,__epnum,__intr) \
+do { \
+		doepint_data_t doepint = {.d32=0}; \
+		doepint.b.__intr = 1; \
+		DWC_WRITE_REG32(&__core_if->dev_if->out_ep_regs[__epnum]->doepint, \
+		doepint.d32); \
+} while (0)
+
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	uint32_t ep_intr;
+	doepint_data_t doepint = {.d32 = 0 };
+	uint32_t epnum = 0;
+	dwc_otg_pcd_ep_t *ep;
+	dwc_ep_t *dwc_ep;
+	dctl_data_t dctl = {.d32 = 0 };
+	gintmsk_data_t gintmsk = {.d32 = 0 };
+
+
+	DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__);
+
+	/* Read in the device interrupt bits */
+	ep_intr = dwc_otg_read_dev_all_out_ep_intr(core_if);
+
+	while (ep_intr) {
+		if (ep_intr & 0x1) {
+			/* Get EP pointer */
+			ep = get_out_ep(pcd, epnum);
+			dwc_ep = &ep->dwc_ep;
+
+#ifdef VERBOSE
+			DWC_DEBUGPL(DBG_PCDV,
+				    "EP%d-%s: type=%d, mps=%d\n",
+				    dwc_ep->num, (dwc_ep->is_in ? "IN" : "OUT"),
+				    dwc_ep->type, dwc_ep->maxpacket);
+#endif
+			doepint.d32 =
+			    dwc_otg_read_dev_out_ep_intr(core_if, dwc_ep);
+			/* Moved this interrupt upper due to core deffect of asserting
+			 * OUT EP 0 xfercompl along with stsphsrcvd in BDMA */
+			if (doepint.b.stsphsercvd) {
+				deptsiz0_data_t deptsiz;
+				CLEAR_OUT_EP_INTR(core_if, epnum, stsphsercvd);
+				deptsiz.d32 =
+				    DWC_READ_REG32(&core_if->dev_if->
+						   out_ep_regs[0]->doeptsiz);
+				if (core_if->snpsid >= OTG_CORE_REV_3_00a
+				    && core_if->dma_enable
+				    && core_if->dma_desc_enable == 0
+				    && doepint.b.xfercompl
+				    && deptsiz.b.xfersize == 24) {
+					CLEAR_OUT_EP_INTR(core_if, epnum,
+							  xfercompl);
+					doepint.b.xfercompl = 0;
+					ep0_out_start(core_if, pcd);
+				}
+				if ((core_if->dma_desc_enable) ||
+				    (core_if->dma_enable
+				     && core_if->snpsid >=
+				     OTG_CORE_REV_3_00a)) {
+					do_setup_in_status_phase(pcd);
+				}
+			}
+			/* Transfer complete */
+			if (doepint.b.xfercompl) {
+
+				if (epnum == 0) {
+					/* Clear the bit in DOEPINTn for this interrupt */
+					CLEAR_OUT_EP_INTR(core_if, epnum, xfercompl);
+					if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
+						DWC_DEBUGPL(DBG_PCDV, "DOEPINT=%x doepint=%x\n",
+							DWC_READ_REG32(&core_if->dev_if->out_ep_regs[0]->doepint),
+							doepint.d32);
+						DWC_DEBUGPL(DBG_PCDV, "DOEPCTL=%x \n",
+							DWC_READ_REG32(&core_if->dev_if->out_ep_regs[0]->doepctl));
+
+						if (core_if->snpsid >= OTG_CORE_REV_3_00a
+							&& core_if->dma_enable == 0) {
+							doepint_data_t doepint;
+							doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+														out_ep_regs[0]->doepint);
+							if (pcd->ep0state == EP0_IDLE && doepint.b.sr) {
+								CLEAR_OUT_EP_INTR(core_if, epnum, sr);
+								goto exit_xfercompl;
+							}
+						}
+						/* In case of DDMA  look at SR bit to go to the Data Stage */
+						if (core_if->dma_desc_enable) {
+							dev_dma_desc_sts_t status = {.d32 = 0};
+							if (pcd->ep0state == EP0_IDLE) {
+								status.d32 = core_if->dev_if->setup_desc_addr[core_if->
+											dev_if->setup_desc_index]->status.d32;
+								if(pcd->data_terminated) {
+									 pcd->data_terminated = 0;
+									 status.d32 = core_if->dev_if->out_desc_addr->status.d32;
+									 dwc_memcpy(&pcd->setup_pkt->req, pcd->backup_buf, 8);
+								}
+								if (status.b.sr) {
+									if (doepint.b.setup) {
+										DWC_DEBUGPL(DBG_PCDV, "DMA DESC EP0_IDLE SR=1 setup=1\n");
+										/* Already started data stage, clear setup */
+										CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+										doepint.b.setup = 0;
+										handle_ep0(pcd);
+										/* Prepare for more setup packets */
+										if (pcd->ep0state == EP0_IN_STATUS_PHASE ||
+											pcd->ep0state == EP0_IN_DATA_PHASE) {
+											ep0_out_start(core_if, pcd);
+										}
+
+										goto exit_xfercompl;
+									} else {
+										/* Prepare for more setup packets */
+										DWC_DEBUGPL(DBG_PCDV,
+											"EP0_IDLE SR=1 setup=0 new setup comes\n");
+										ep0_out_start(core_if, pcd);
+									}
+								}
+							} else {
+								dwc_otg_pcd_request_t *req;
+								dev_dma_desc_sts_t status = {.d32 = 0};
+								diepint_data_t diepint0;
+								diepint0.d32 = DWC_READ_REG32(&core_if->dev_if->
+															in_ep_regs[0]->diepint);
+
+								if (pcd->ep0state == EP0_STALL || pcd->ep0state == EP0_DISCONNECT) {
+									DWC_ERROR("EP0 is stalled/disconnected\n");
+								}
+
+								/* Clear IN xfercompl if set */
+								if (diepint0.b.xfercompl && (pcd->ep0state == EP0_IN_STATUS_PHASE
+									|| pcd->ep0state == EP0_IN_DATA_PHASE)) {
+									DWC_WRITE_REG32(&core_if->dev_if->
+										in_ep_regs[0]->diepint, diepint0.d32);
+								}
+
+								status.d32 = core_if->dev_if->setup_desc_addr[core_if->
+									dev_if->setup_desc_index]->status.d32;
+
+								if (ep->dwc_ep.xfer_count != ep->dwc_ep.total_len
+									&& (pcd->ep0state == EP0_OUT_DATA_PHASE))
+									status.d32 = core_if->dev_if->out_desc_addr->status.d32;
+								if (pcd->ep0state == EP0_OUT_STATUS_PHASE)
+									status.d32 = core_if->dev_if->
+									out_desc_addr->status.d32;
+
+								if (status.b.sr) {
+									if (DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+										DWC_DEBUGPL(DBG_PCDV, "Request queue empty!!\n");
+									} else {
+										DWC_DEBUGPL(DBG_PCDV, "complete req!!\n");
+										req = DWC_CIRCLEQ_FIRST(&ep->queue);
+										if (ep->dwc_ep.xfer_count != ep->dwc_ep.total_len &&
+											pcd->ep0state == EP0_OUT_DATA_PHASE) {
+												/* Read arrived setup packet from req->buf */
+												dwc_memcpy(&pcd->setup_pkt->req,
+													req->buf + ep->dwc_ep.xfer_count, 8);
+										}
+										req->actual = ep->dwc_ep.xfer_count;
+										dwc_otg_request_done(ep, req, -ECONNRESET);
+										ep->dwc_ep.start_xfer_buff = 0;
+										ep->dwc_ep.xfer_buff = 0;
+										ep->dwc_ep.xfer_len = 0;
+									}
+									pcd->ep0state = EP0_IDLE;
+									if (doepint.b.setup) {
+										DWC_DEBUGPL(DBG_PCDV, "EP0_IDLE SR=1 setup=1\n");
+										/* Data stage started, clear setup */
+										CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+										doepint.b.setup = 0;
+										handle_ep0(pcd);
+										/* Prepare for setup packets if ep0in was enabled*/
+										if (pcd->ep0state == EP0_IN_STATUS_PHASE) {
+											ep0_out_start(core_if, pcd);
+										}
+
+										goto exit_xfercompl;
+									} else {
+										/* Prepare for more setup packets */
+										DWC_DEBUGPL(DBG_PCDV,
+											"EP0_IDLE SR=1 setup=0 new setup comes 2\n");
+										ep0_out_start(core_if, pcd);
+									}
+								}
+							}
+						}
+						if (core_if->snpsid >= OTG_CORE_REV_2_94a && core_if->dma_enable
+							&& core_if->dma_desc_enable == 0) {
+							doepint_data_t doepint_temp = {.d32 = 0};
+							deptsiz0_data_t doeptsize0 = {.d32 = 0 };
+							doepint_temp.d32 = DWC_READ_REG32(&core_if->dev_if->
+															out_ep_regs[ep->dwc_ep.num]->doepint);
+							doeptsize0.d32 = DWC_READ_REG32(&core_if->dev_if->
+															out_ep_regs[ep->dwc_ep.num]->doeptsiz);
+							if (pcd->ep0state == EP0_IDLE) {
+								if (doepint_temp.b.sr) {
+									CLEAR_OUT_EP_INTR(core_if, epnum, sr);
+								}
+									doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+																	out_ep_regs[0]->doepint);
+									if (doeptsize0.b.supcnt == 3) {
+										DWC_DEBUGPL(DBG_ANY, "Rolling over!!!!!!!\n");
+										ep->dwc_ep.stp_rollover = 1;
+									}
+									if (doepint.b.setup) {
+retry:
+										/* Already started data stage, clear setup */
+										CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+										doepint.b.setup = 0;
+										handle_ep0(pcd);
+										ep->dwc_ep.stp_rollover = 0;
+										/* Prepare for more setup packets */
+										if (pcd->ep0state == EP0_IN_STATUS_PHASE ||
+											pcd->ep0state == EP0_IN_DATA_PHASE) {
+											ep0_out_start(core_if, pcd);
+										}
+										goto exit_xfercompl;
+									} else {
+										/* Prepare for more setup packets */
+										DWC_DEBUGPL(DBG_ANY,
+											"EP0_IDLE SR=1 setup=0 new setup comes\n");
+										doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+																	out_ep_regs[0]->doepint);
+										if(doepint.b.setup)
+											goto retry;
+										ep0_out_start(core_if, pcd);
+									}
+							} else {
+								dwc_otg_pcd_request_t *req;
+								diepint_data_t diepint0 = {.d32 = 0};
+								doepint_data_t doepint_temp = {.d32 = 0};
+								depctl_data_t diepctl0;
+								diepint0.d32 = DWC_READ_REG32(&core_if->dev_if->
+																in_ep_regs[0]->diepint);
+								diepctl0.d32 = DWC_READ_REG32(&core_if->dev_if->
+																in_ep_regs[0]->diepctl);
+
+								if (pcd->ep0state == EP0_IN_DATA_PHASE
+									|| pcd->ep0state == EP0_IN_STATUS_PHASE) {
+									if (diepint0.b.xfercompl) {
+										DWC_WRITE_REG32(&core_if->dev_if->
+											in_ep_regs[0]->diepint, diepint0.d32);
+									}
+									if (diepctl0.b.epena) {
+										diepint_data_t diepint = {.d32 = 0};
+										diepctl0.b.snak = 1;
+										DWC_WRITE_REG32(&core_if->dev_if->
+														in_ep_regs[0]->diepctl, diepctl0.d32);
+										do {
+											dwc_udelay(10);
+											diepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+												in_ep_regs[0]->diepint);
+										} while (!diepint.b.inepnakeff);
+										diepint.b.inepnakeff = 1;
+										DWC_WRITE_REG32(&core_if->dev_if->
+											in_ep_regs[0]->diepint, diepint.d32);
+										diepctl0.d32 = 0;
+										diepctl0.b.epdis = 1;
+										DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[0]->diepctl,
+														diepctl0.d32);
+										do {
+											dwc_udelay(10);
+											diepint.d32 = DWC_READ_REG32(&core_if->dev_if->
+												in_ep_regs[0]->diepint);
+										} while (!diepint.b.epdisabled);
+										diepint.b.epdisabled = 1;
+										DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[0]->diepint,
+															diepint.d32);
+									}
+								}
+								doepint_temp.d32 = DWC_READ_REG32(&core_if->dev_if->
+																out_ep_regs[ep->dwc_ep.num]->doepint);
+								if (doepint_temp.b.sr) {
+									CLEAR_OUT_EP_INTR(core_if, epnum, sr);
+									if (DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+										DWC_DEBUGPL(DBG_PCDV, "Request queue empty!!\n");
+									} else {
+										DWC_DEBUGPL(DBG_PCDV, "complete req!!\n");
+										req = DWC_CIRCLEQ_FIRST(&ep->queue);
+										if (ep->dwc_ep.xfer_count != ep->dwc_ep.total_len &&
+											pcd->ep0state == EP0_OUT_DATA_PHASE) {
+												/* Read arrived setup packet from req->buf */
+												dwc_memcpy(&pcd->setup_pkt->req,
+													req->buf + ep->dwc_ep.xfer_count, 8);
+										}
+										req->actual = ep->dwc_ep.xfer_count;
+										dwc_otg_request_done(ep, req, -ECONNRESET);
+										ep->dwc_ep.start_xfer_buff = 0;
+										ep->dwc_ep.xfer_buff = 0;
+										ep->dwc_ep.xfer_len = 0;
+									}
+									pcd->ep0state = EP0_IDLE;
+									if (doepint.b.setup) {
+										DWC_DEBUGPL(DBG_PCDV, "EP0_IDLE SR=1 setup=1\n");
+										/* Data stage started, clear setup */
+										CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+										doepint.b.setup = 0;
+										handle_ep0(pcd);
+										/* Prepare for setup packets if ep0in was enabled*/
+										if (pcd->ep0state == EP0_IN_STATUS_PHASE) {
+											ep0_out_start(core_if, pcd);
+										}
+										goto exit_xfercompl;
+									} else {
+										/* Prepare for more setup packets */
+										DWC_DEBUGPL(DBG_PCDV,
+											"EP0_IDLE SR=1 setup=0 new setup comes 2\n");
+										ep0_out_start(core_if, pcd);
+									}
+								}
+							}
+						}
+						if (core_if->dma_enable == 0 || pcd->ep0state != EP0_IDLE)
+							handle_ep0(pcd);
+exit_xfercompl:
+						DWC_DEBUGPL(DBG_PCDV, "DOEPINT=%x doepint=%x\n",
+							dwc_otg_read_dev_out_ep_intr(core_if, dwc_ep), doepint.d32);
+					} else {
+					if (core_if->dma_desc_enable == 0
+					    || pcd->ep0state != EP0_IDLE)
+						handle_ep0(pcd);
+					}
+#ifdef DWC_EN_ISOC
+				} else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+					if (doepint.b.pktdrpsts == 0) {
+						/* Clear the bit in DOEPINTn for this interrupt */
+						CLEAR_OUT_EP_INTR(core_if,
+								  epnum,
+								  xfercompl);
+						complete_iso_ep(pcd, ep);
+					} else {
+
+						doepint_data_t doepint = {.d32 = 0 };
+						doepint.b.xfercompl = 1;
+						doepint.b.pktdrpsts = 1;
+						DWC_WRITE_REG32
+						    (&core_if->dev_if->out_ep_regs
+						     [epnum]->doepint,
+						     doepint.d32);
+						if (handle_iso_out_pkt_dropped
+						    (core_if, dwc_ep)) {
+							complete_iso_ep(pcd,
+									ep);
+						}
+					}
+#endif /* DWC_EN_ISOC */
+#ifdef DWC_UTE_PER_IO
+				} else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+					CLEAR_OUT_EP_INTR(core_if, epnum, xfercompl);
+					if (!ep->stopped)
+						complete_xiso_ep(ep);
+#endif /* DWC_UTE_PER_IO */
+				} else {
+					/* Clear the bit in DOEPINTn for this interrupt */
+					CLEAR_OUT_EP_INTR(core_if, epnum,
+							  xfercompl);
+
+					if (core_if->core_params->dev_out_nak) {
+						DWC_TIMER_CANCEL(pcd->core_if->ep_xfer_timer[epnum]);
+						pcd->core_if->ep_xfer_info[epnum].state = 0;
+#ifdef DEBUG
+						print_memory_payload(pcd, dwc_ep);
+#endif
+					}
+					complete_ep(ep);
+				}
+
+			}
+
+			/* Endpoint disable      */
+			if (doepint.b.epdisabled) {
+
+				/* Clear the bit in DOEPINTn for this interrupt */
+				CLEAR_OUT_EP_INTR(core_if, epnum, epdisabled);
+				if (core_if->core_params->dev_out_nak) {
+#ifdef DEBUG
+					print_memory_payload(pcd, dwc_ep);
+#endif
+					/* In case of timeout condition */
+					if (core_if->ep_xfer_info[epnum].state == 2) {
+						dctl.d32 = DWC_READ_REG32(&core_if->dev_if->
+										dev_global_regs->dctl);
+						dctl.b.cgoutnak = 1;
+						DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
+																dctl.d32);
+						/* Unmask goutnakeff interrupt which was masked
+						 * during handle nak out interrupt */
+						gintmsk.b.goutnakeff = 1;
+						DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
+																0, gintmsk.d32);
+
+						complete_ep(ep);
+					}
+				}
+				if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC)
+				{
+					dctl_data_t dctl;
+					gintmsk_data_t intr_mask = {.d32 = 0};
+					dwc_otg_pcd_request_t *req = 0;
+
+					dctl.d32 = DWC_READ_REG32(&core_if->dev_if->
+						dev_global_regs->dctl);
+					dctl.b.cgoutnak = 1;
+					DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
+						dctl.d32);
+
+					intr_mask.d32 = 0;
+					intr_mask.b.incomplisoout = 1;
+
+					/* Get any pending requests */
+					if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
+						req = DWC_CIRCLEQ_FIRST(&ep->queue);
+						if (!req) {
+							DWC_PRINTF("complete_ep 0x%p, req = NULL!\n", ep);
+						} else {
+							dwc_otg_request_done(ep, req, 0);
+							start_next_request(ep);
+						}
+					} else {
+						DWC_PRINTF("complete_ep 0x%p, ep->queue empty!\n", ep);
+					}
+				}
+			}
+			/* AHB Error */
+			if (doepint.b.ahberr) {
+				DWC_ERROR("EP%d OUT AHB Error\n", epnum);
+				DWC_ERROR("EP%d DEPDMA=0x%08x \n",
+					  epnum, core_if->dev_if->out_ep_regs[epnum]->doepdma);
+				CLEAR_OUT_EP_INTR(core_if, epnum, ahberr);
+			}
+			/* Setup Phase Done (contorl EPs) */
+			if (doepint.b.setup) {
+#ifdef DEBUG_EP0
+				DWC_DEBUGPL(DBG_PCD, "EP%d SETUP Done\n", epnum);
+#endif
+				CLEAR_OUT_EP_INTR(core_if, epnum, setup);
+
+				handle_ep0(pcd);
+			}
+
+			/** OUT EP BNA Intr */
+			if (doepint.b.bna) {
+				CLEAR_OUT_EP_INTR(core_if, epnum, bna);
+				if (core_if->dma_desc_enable) {
+#ifdef DWC_EN_ISOC
+					if (dwc_ep->type ==
+					    DWC_OTG_EP_TYPE_ISOC) {
+						/*
+						 * This checking is performed to prevent first "false" BNA
+						 * handling occuring right after reconnect
+						 */
+						if (dwc_ep->next_frame !=
+						    0xffffffff)
+							dwc_otg_pcd_handle_iso_bna(ep);
+					} else
+#endif				/* DWC_EN_ISOC */
+					{
+						dwc_otg_pcd_handle_noniso_bna(ep);
+					}
+				}
+			}
+			/* Babble Interrupt */
+			if (doepint.b.babble) {
+				DWC_DEBUGPL(DBG_ANY, "EP%d OUT Babble\n",
+					    epnum);
+				handle_out_ep_babble_intr(pcd, epnum);
+
+				CLEAR_OUT_EP_INTR(core_if, epnum, babble);
+			}
+			if (doepint.b.outtknepdis) {
+				DWC_DEBUGPL(DBG_ANY, "EP%d OUT Token received when EP is \
+					disabled\n",epnum);
+				if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+					doepmsk_data_t doepmsk = {.d32 = 0};
+					ep->dwc_ep.frame_num = core_if->frame_num;
+					if (ep->dwc_ep.bInterval > 1) {
+						depctl_data_t depctl;
+						depctl.d32 = DWC_READ_REG32(&core_if->dev_if->
+													out_ep_regs[epnum]->doepctl);
+						if (ep->dwc_ep.frame_num & 0x1) {
+							depctl.b.setd1pid = 1;
+							depctl.b.setd0pid = 0;
+						} else {
+							depctl.b.setd0pid = 1;
+							depctl.b.setd1pid = 0;
+						}
+						DWC_WRITE_REG32(&core_if->dev_if->
+										out_ep_regs[epnum]->doepctl, depctl.d32);
+					}
+					start_next_request(ep);
+					doepmsk.b.outtknepdis = 1;
+					DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
+								 doepmsk.d32, 0);
+				}
+				CLEAR_OUT_EP_INTR(core_if, epnum, outtknepdis);
+			}
+
+			/* NAK Interrutp */
+			if (doepint.b.nak) {
+				DWC_DEBUGPL(DBG_ANY, "EP%d OUT NAK\n", epnum);
+				handle_out_ep_nak_intr(pcd, epnum);
+
+				CLEAR_OUT_EP_INTR(core_if, epnum, nak);
+			}
+			/* NYET Interrutp */
+			if (doepint.b.nyet) {
+				DWC_DEBUGPL(DBG_ANY, "EP%d OUT NYET\n", epnum);
+				handle_out_ep_nyet_intr(pcd, epnum);
+
+				CLEAR_OUT_EP_INTR(core_if, epnum, nyet);
+			}
+		}
+
+		epnum++;
+		ep_intr >>= 1;
+	}
+
+	return 1;
+
+#undef CLEAR_OUT_EP_INTR
+}
+static int drop_transfer(uint32_t trgt_fr, uint32_t curr_fr, uint8_t frm_overrun)
+{
+	int retval = 0;
+	if(!frm_overrun && curr_fr >= trgt_fr)
+		retval = 1;
+	else if (frm_overrun
+		 && (curr_fr >= trgt_fr && ((curr_fr - trgt_fr) < 0x3FFF / 2)))
+		retval = 1;
+	return retval;
+}
+/**
+ * Incomplete ISO IN Transfer Interrupt.
+ * This interrupt indicates one of the following conditions occurred
+ * while transmitting an ISOC transaction.
+ * - Corrupted IN Token for ISOC EP.
+ * - Packet not complete in FIFO.
+ * The follow actions will be taken:
+ *	-#	Determine the EP
+ *	-#	Set incomplete flag in dwc_ep structure
+ *	-#	Disable EP; when "Endpoint Disabled" interrupt is received
+ *		Flush FIFO
+ */
+int32_t dwc_otg_pcd_handle_incomplete_isoc_in_intr(dwc_otg_pcd_t * pcd)
+{
+	gintsts_data_t gintsts;
+
+#ifdef DWC_EN_ISOC
+	dwc_otg_dev_if_t *dev_if;
+	deptsiz_data_t deptsiz = {.d32 = 0 };
+	depctl_data_t depctl = {.d32 = 0 };
+	dsts_data_t dsts = {.d32 = 0 };
+	dwc_ep_t *dwc_ep;
+	int i;
+
+	dev_if = GET_CORE_IF(pcd)->dev_if;
+
+	for (i = 1; i <= dev_if->num_in_eps; ++i) {
+		dwc_ep = &pcd->in_ep[i].dwc_ep;
+		if (dwc_ep->active && dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+			deptsiz.d32 =
+			    DWC_READ_REG32(&dev_if->in_ep_regs[i]->dieptsiz);
+			depctl.d32 =
+			    DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+
+			if (depctl.b.epdis && deptsiz.d32) {
+				set_current_pkt_info(GET_CORE_IF(pcd), dwc_ep);
+				if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+					dwc_ep->cur_pkt = 0;
+					dwc_ep->proc_buf_num =
+					    (dwc_ep->proc_buf_num ^ 1) & 0x1;
+
+					if (dwc_ep->proc_buf_num) {
+						dwc_ep->cur_pkt_addr =
+						    dwc_ep->xfer_buff1;
+						dwc_ep->cur_pkt_dma_addr =
+						    dwc_ep->dma_addr1;
+					} else {
+						dwc_ep->cur_pkt_addr =
+						    dwc_ep->xfer_buff0;
+						dwc_ep->cur_pkt_dma_addr =
+						    dwc_ep->dma_addr0;
+					}
+
+				}
+
+				dsts.d32 =
+				    DWC_READ_REG32(&GET_CORE_IF(pcd)->dev_if->
+						   dev_global_regs->dsts);
+				dwc_ep->next_frame = dsts.b.soffn;
+
+				dwc_otg_iso_ep_start_frm_transfer(GET_CORE_IF
+								  (pcd),
+								  dwc_ep);
+			}
+		}
+	}
+
+#else
+	depctl_data_t depctl = {.d32 = 0 };
+	dwc_ep_t *dwc_ep;
+	dwc_otg_dev_if_t *dev_if;
+	int i;
+	dev_if = GET_CORE_IF(pcd)->dev_if;
+
+	DWC_DEBUGPL(DBG_PCD,"Incomplete ISO IN \n");
+
+	for (i = 1; i <= dev_if->num_in_eps; ++i) {
+		dwc_ep = &pcd->in_ep[i-1].dwc_ep;
+		depctl.d32 =
+			DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+		if (depctl.b.epena && dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+			if (drop_transfer(dwc_ep->frame_num, GET_CORE_IF(pcd)->frame_num,
+							dwc_ep->frm_overrun))
+			{
+				depctl.d32 =
+					DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+				depctl.b.snak = 1;
+				depctl.b.epdis = 1;
+				DWC_MODIFY_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32, depctl.d32);
+			}
+		}
+	}
+
+	/*intr_mask.b.incomplisoin = 1;
+	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+			 intr_mask.d32, 0);	 */
+#endif				//DWC_EN_ISOC
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.incomplisoin = 1;
+	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+			gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * Incomplete ISO OUT Transfer Interrupt.
+ *
+ * This interrupt indicates that the core has dropped an ISO OUT
+ * packet. The following conditions can be the cause:
+ * - FIFO Full, the entire packet would not fit in the FIFO.
+ * - CRC Error
+ * - Corrupted Token
+ * The follow actions will be taken:
+ *	-#	Determine the EP
+ *	-#	Set incomplete flag in dwc_ep structure
+ *	-#	Read any data from the FIFO
+ *	-#	Disable EP. When "Endpoint Disabled" interrupt is received
+ *		re-enable EP.
+ */
+int32_t dwc_otg_pcd_handle_incomplete_isoc_out_intr(dwc_otg_pcd_t * pcd)
+{
+
+	gintsts_data_t gintsts;
+
+#ifdef DWC_EN_ISOC
+	dwc_otg_dev_if_t *dev_if;
+	deptsiz_data_t deptsiz = {.d32 = 0 };
+	depctl_data_t depctl = {.d32 = 0 };
+	dsts_data_t dsts = {.d32 = 0 };
+	dwc_ep_t *dwc_ep;
+	int i;
+
+	dev_if = GET_CORE_IF(pcd)->dev_if;
+
+	for (i = 1; i <= dev_if->num_out_eps; ++i) {
+		dwc_ep = &pcd->in_ep[i].dwc_ep;
+		if (pcd->out_ep[i].dwc_ep.active &&
+		    pcd->out_ep[i].dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+			deptsiz.d32 =
+			    DWC_READ_REG32(&dev_if->out_ep_regs[i]->doeptsiz);
+			depctl.d32 =
+			    DWC_READ_REG32(&dev_if->out_ep_regs[i]->doepctl);
+
+			if (depctl.b.epdis && deptsiz.d32) {
+				set_current_pkt_info(GET_CORE_IF(pcd),
+						     &pcd->out_ep[i].dwc_ep);
+				if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+					dwc_ep->cur_pkt = 0;
+					dwc_ep->proc_buf_num =
+					    (dwc_ep->proc_buf_num ^ 1) & 0x1;
+
+					if (dwc_ep->proc_buf_num) {
+						dwc_ep->cur_pkt_addr =
+						    dwc_ep->xfer_buff1;
+						dwc_ep->cur_pkt_dma_addr =
+						    dwc_ep->dma_addr1;
+					} else {
+						dwc_ep->cur_pkt_addr =
+						    dwc_ep->xfer_buff0;
+						dwc_ep->cur_pkt_dma_addr =
+						    dwc_ep->dma_addr0;
+					}
+
+				}
+
+				dsts.d32 =
+				    DWC_READ_REG32(&GET_CORE_IF(pcd)->dev_if->
+						   dev_global_regs->dsts);
+				dwc_ep->next_frame = dsts.b.soffn;
+
+				dwc_otg_iso_ep_start_frm_transfer(GET_CORE_IF
+								  (pcd),
+								  dwc_ep);
+			}
+		}
+	}
+#else
+	/** @todo implement ISR */
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	dwc_otg_core_if_t *core_if;
+	deptsiz_data_t deptsiz = {.d32 = 0 };
+	depctl_data_t depctl = {.d32 = 0 };
+	dctl_data_t dctl = {.d32 = 0 };
+	dwc_ep_t *dwc_ep = NULL;
+	int i;
+	core_if = GET_CORE_IF(pcd);
+
+	for (i = 0; i < core_if->dev_if->num_out_eps; ++i) {
+		dwc_ep = &pcd->out_ep[i].dwc_ep;
+		depctl.d32 =
+			DWC_READ_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl);
+		if (depctl.b.epena && depctl.b.dpid == (core_if->frame_num & 0x1)) {
+			core_if->dev_if->isoc_ep = dwc_ep;
+			deptsiz.d32 =
+					DWC_READ_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doeptsiz);
+				break;
+		}
+	}
+	dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
+	gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
+	intr_mask.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
+
+	if (!intr_mask.b.goutnakeff) {
+		/* Unmask it */
+		intr_mask.b.goutnakeff = 1;
+		DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, intr_mask.d32);
+	}
+	if (!gintsts.b.goutnakeff) {
+		dctl.b.sgoutnak = 1;
+	}
+	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
+
+	depctl.d32 = DWC_READ_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl);
+	if (depctl.b.epena) {
+		depctl.b.epdis = 1;
+		depctl.b.snak = 1;
+	}
+	DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl, depctl.d32);
+
+	intr_mask.d32 = 0;
+	intr_mask.b.incomplisoout = 1;
+
+#endif /* DWC_EN_ISOC */
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.incomplisoout = 1;
+	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+			gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * This function handles the Global IN NAK Effective interrupt.
+ *
+ */
+int32_t dwc_otg_pcd_handle_in_nak_effective(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+	depctl_data_t diepctl = {.d32 = 0 };
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	gintsts_data_t gintsts;
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+	int i;
+
+	DWC_DEBUGPL(DBG_PCD, "Global IN NAK Effective\n");
+
+	/* Disable all active IN EPs */
+	for (i = 0; i <= dev_if->num_in_eps; i++) {
+		diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
+		if (!(diepctl.b.eptype & 1) && diepctl.b.epena) {
+			if (core_if->start_predict > 0)
+				core_if->start_predict++;
+			diepctl.b.epdis = 1;
+			diepctl.b.snak = 1;
+			DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, diepctl.d32);
+		}
+	}
+
+
+	/* Disable the Global IN NAK Effective Interrupt */
+	intr_mask.b.ginnakeff = 1;
+	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+			 intr_mask.d32, 0);
+
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.ginnakeff = 1;
+	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+			gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * OUT NAK Effective.
+ *
+ */
+int32_t dwc_otg_pcd_handle_out_nak_effective(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+	gintmsk_data_t intr_mask = {.d32 = 0 };
+	gintsts_data_t gintsts;
+	depctl_data_t doepctl;
+	int i;
+
+	/* Disable the Global OUT NAK Effective Interrupt */
+	intr_mask.b.goutnakeff = 1;
+	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+		intr_mask.d32, 0);
+
+	/* If DEV OUT NAK enabled*/
+	if (pcd->core_if->core_params->dev_out_nak) {
+		/* Run over all out endpoints to determine the ep number on
+		 * which the timeout has happened
+		 */
+		for (i = 0; i <= dev_if->num_out_eps; i++) {
+			if ( pcd->core_if->ep_xfer_info[i].state == 2 )
+				break;
+		}
+		if (i > dev_if->num_out_eps) {
+			dctl_data_t dctl;
+			dctl.d32 =
+			    DWC_READ_REG32(&dev_if->dev_global_regs->dctl);
+			dctl.b.cgoutnak = 1;
+			DWC_WRITE_REG32(&dev_if->dev_global_regs->dctl,
+				dctl.d32);
+			goto out;
+		}
+
+		/* Disable the endpoint */
+		doepctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[i]->doepctl);
+		if (doepctl.b.epena) {
+			doepctl.b.epdis = 1;
+			doepctl.b.snak = 1;
+		}
+		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepctl, doepctl.d32);
+		return 1;
+	}
+	/* We come here from Incomplete ISO OUT handler */
+	if (dev_if->isoc_ep) {
+		dwc_ep_t *dwc_ep = (dwc_ep_t *)dev_if->isoc_ep;
+		uint32_t epnum = dwc_ep->num;
+		doepint_data_t doepint;
+		doepint.d32 =
+		    DWC_READ_REG32(&dev_if->out_ep_regs[dwc_ep->num]->doepint);
+		dev_if->isoc_ep = NULL;
+		doepctl.d32 =
+		    DWC_READ_REG32(&dev_if->out_ep_regs[epnum]->doepctl);
+		DWC_PRINTF("Before disable DOEPCTL = %08x\n", doepctl.d32);
+		if (doepctl.b.epena) {
+			doepctl.b.epdis = 1;
+			doepctl.b.snak = 1;
+		}
+		DWC_WRITE_REG32(&dev_if->out_ep_regs[epnum]->doepctl,
+				doepctl.d32);
+		return 1;
+	} else
+		DWC_PRINTF("INTERRUPT Handler not implemented for %s\n",
+			   "Global OUT NAK Effective\n");
+
+out:
+	/* Clear interrupt */
+	gintsts.d32 = 0;
+	gintsts.b.goutnakeff = 1;
+	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+			gintsts.d32);
+
+	return 1;
+}
+
+/**
+ * PCD interrupt handler.
+ *
+ * The PCD handles the device interrupts.  Many conditions can cause a
+ * device interrupt. When an interrupt occurs, the device interrupt
+ * service routine determines the cause of the interrupt and
+ * dispatches handling to the appropriate function. These interrupt
+ * handling functions are described below.
+ *
+ * All interrupt registers are processed from LSB to MSB.
+ *
+ */
+int32_t dwc_otg_pcd_handle_intr(dwc_otg_pcd_t * pcd)
+{
+	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+#ifdef VERBOSE
+	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+#endif
+	gintsts_data_t gintr_status;
+	int32_t retval = 0;
+
+	/* Exit from ISR if core is hibernated */
+	if (core_if->hibernation_suspend == 1) {
+		return retval;
+	}
+#ifdef VERBOSE
+	DWC_DEBUGPL(DBG_ANY, "%s() gintsts=%08x	 gintmsk=%08x\n",
+		    __func__,
+		    DWC_READ_REG32(&global_regs->gintsts),
+		    DWC_READ_REG32(&global_regs->gintmsk));
+#endif
+
+	if (dwc_otg_is_device_mode(core_if)) {
+		DWC_SPINLOCK(pcd->lock);
+#ifdef VERBOSE
+		DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%08x  gintmsk=%08x\n",
+			    __func__,
+			    DWC_READ_REG32(&global_regs->gintsts),
+			    DWC_READ_REG32(&global_regs->gintmsk));
+#endif
+
+		gintr_status.d32 = dwc_otg_read_core_intr(core_if);
+
+		DWC_DEBUGPL(DBG_PCDV, "%s: gintsts&gintmsk=%08x\n",
+			    __func__, gintr_status.d32);
+
+		if (gintr_status.b.sofintr) {
+			retval |= dwc_otg_pcd_handle_sof_intr(pcd);
+		}
+		if (gintr_status.b.rxstsqlvl) {
+			retval |=
+			    dwc_otg_pcd_handle_rx_status_q_level_intr(pcd);
+		}
+		if (gintr_status.b.nptxfempty) {
+			retval |= dwc_otg_pcd_handle_np_tx_fifo_empty_intr(pcd);
+		}
+		if (gintr_status.b.goutnakeff) {
+			retval |= dwc_otg_pcd_handle_out_nak_effective(pcd);
+		}
+		if (gintr_status.b.i2cintr) {
+			retval |= dwc_otg_pcd_handle_i2c_intr(pcd);
+		}
+		if (gintr_status.b.erlysuspend) {
+			retval |= dwc_otg_pcd_handle_early_suspend_intr(pcd);
+		}
+		if (gintr_status.b.usbreset) {
+			retval |= dwc_otg_pcd_handle_usb_reset_intr(pcd);
+		}
+		if (gintr_status.b.enumdone) {
+			retval |= dwc_otg_pcd_handle_enum_done_intr(pcd);
+		}
+		if (gintr_status.b.isooutdrop) {
+			retval |=
+			    dwc_otg_pcd_handle_isoc_out_packet_dropped_intr
+			    (pcd);
+		}
+		if (gintr_status.b.eopframe) {
+			retval |=
+			    dwc_otg_pcd_handle_end_periodic_frame_intr(pcd);
+		}
+		if (gintr_status.b.inepint) {
+			if (!core_if->multiproc_int_enable) {
+				retval |= dwc_otg_pcd_handle_in_ep_intr(pcd);
+			}
+		}
+		if (gintr_status.b.outepintr) {
+			if (!core_if->multiproc_int_enable) {
+				retval |= dwc_otg_pcd_handle_out_ep_intr(pcd);
+			}
+		}
+		if (gintr_status.b.epmismatch) {
+			retval |= dwc_otg_pcd_handle_ep_mismatch_intr(pcd);
+		}
+		if (gintr_status.b.fetsusp) {
+			retval |= dwc_otg_pcd_handle_ep_fetsusp_intr(pcd);
+		}
+		if (gintr_status.b.ginnakeff) {
+			retval |= dwc_otg_pcd_handle_in_nak_effective(pcd);
+		}
+		if (gintr_status.b.incomplisoin) {
+			retval |=
+			    dwc_otg_pcd_handle_incomplete_isoc_in_intr(pcd);
+		}
+		if (gintr_status.b.incomplisoout) {
+			retval |=
+			    dwc_otg_pcd_handle_incomplete_isoc_out_intr(pcd);
+		}
+
+		/* In MPI mode Device Endpoints interrupts are asserted
+		 * without setting outepintr and inepint bits set, so these
+		 * Interrupt handlers are called without checking these bit-fields
+		 */
+		if (core_if->multiproc_int_enable) {
+			retval |= dwc_otg_pcd_handle_in_ep_intr(pcd);
+			retval |= dwc_otg_pcd_handle_out_ep_intr(pcd);
+		}
+#ifdef VERBOSE
+		DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%0x\n", __func__,
+			    DWC_READ_REG32(&global_regs->gintsts));
+#endif
+		DWC_SPINUNLOCK(pcd->lock);
+	}
+	return retval;
+}
+
+#endif /* DWC_HOST_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,1360 @@
+ /* ==========================================================================
+  * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_linux.c $
+  * $Revision: #21 $
+  * $Date: 2012/08/10 $
+  * $Change: 2047372 $
+  *
+  * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+  * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+  * otherwise expressly agreed to in writing between Synopsys and you.
+  *
+  * The Software IS NOT an item of Licensed Software or Licensed Product under
+  * any End User Software License Agreement or Agreement for Licensed Product
+  * with Synopsys or any supplement thereto. You are permitted to use and
+  * redistribute this Software in source and binary forms, with or without
+  * modification, provided that redistributions of source code must retain this
+  * notice. You may not view, use, disclose, copy or distribute this file or
+  * any information contained herein except pursuant to this license grant from
+  * Synopsys. If you do not agree with this notice, including the disclaimer
+  * below, then you are not authorized to use the Software.
+  *
+  * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+  * DAMAGE.
+  * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+
+/** @file
+ * This file implements the Peripheral Controller Driver.
+ *
+ * The Peripheral Controller Driver (PCD) is responsible for
+ * translating requests from the Function Driver into the appropriate
+ * actions on the DWC_otg controller. It isolates the Function Driver
+ * from the specifics of the controller by providing an API to the
+ * Function Driver.
+ *
+ * The Peripheral Controller Driver for Linux will implement the
+ * Gadget API, so that the existing Gadget drivers can be used.
+ * (Gadget Driver is the Linux terminology for a Function Driver.)
+ *
+ * The Linux Gadget API is defined in the header file
+ * <code><linux/usb_gadget.h></code>.  The USB EP operations API is
+ * defined in the structure <code>usb_ep_ops</code> and the USB
+ * Controller API is defined in the structure
+ * <code>usb_gadget_ops</code>.
+ *
+ */
+
+#include "dwc_otg_os_dep.h"
+#include "dwc_otg_pcd_if.h"
+#include "dwc_otg_pcd.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_dbg.h"
+
+extern bool fiq_enable;
+
+static struct gadget_wrapper {
+	dwc_otg_pcd_t *pcd;
+
+	struct usb_gadget gadget;
+	struct usb_gadget_driver *driver;
+
+	struct usb_ep ep0;
+	struct usb_ep in_ep[16];
+	struct usb_ep out_ep[16];
+
+} *gadget_wrapper;
+
+/* Display the contents of the buffer */
+extern void dump_msg(const u8 * buf, unsigned int length);
+/**
+ * Get the dwc_otg_pcd_ep_t* from usb_ep* pointer - NULL in case
+ * if the endpoint is not found
+ */
+static struct dwc_otg_pcd_ep *ep_from_handle(dwc_otg_pcd_t * pcd, void *handle)
+{
+	int i;
+	if (pcd->ep0.priv == handle) {
+		return &pcd->ep0;
+	}
+
+	for (i = 0; i < MAX_EPS_CHANNELS - 1; i++) {
+		if (pcd->in_ep[i].priv == handle)
+			return &pcd->in_ep[i];
+		if (pcd->out_ep[i].priv == handle)
+			return &pcd->out_ep[i];
+	}
+
+	return NULL;
+}
+
+/* USB Endpoint Operations */
+/*
+ * The following sections briefly describe the behavior of the Gadget
+ * API endpoint operations implemented in the DWC_otg driver
+ * software. Detailed descriptions of the generic behavior of each of
+ * these functions can be found in the Linux header file
+ * include/linux/usb_gadget.h.
+ *
+ * The Gadget API provides wrapper functions for each of the function
+ * pointers defined in usb_ep_ops. The Gadget Driver calls the wrapper
+ * function, which then calls the underlying PCD function. The
+ * following sections are named according to the wrapper
+ * functions. Within each section, the corresponding DWC_otg PCD
+ * function name is specified.
+ *
+ */
+
+/**
+ * This function is called by the Gadget Driver for each EP to be
+ * configured for the current configuration (SET_CONFIGURATION).
+ *
+ * This function initializes the dwc_otg_ep_t data structure, and then
+ * calls dwc_otg_ep_activate.
+ */
+static int ep_enable(struct usb_ep *usb_ep,
+		     const struct usb_endpoint_descriptor *ep_desc)
+{
+	int retval;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, usb_ep, ep_desc);
+
+	if (!usb_ep || !ep_desc || ep_desc->bDescriptorType != USB_DT_ENDPOINT) {
+		DWC_WARN("%s, bad ep or descriptor\n", __func__);
+		return -EINVAL;
+	}
+	if (usb_ep == &gadget_wrapper->ep0) {
+		DWC_WARN("%s, bad ep(0)\n", __func__);
+		return -EINVAL;
+	}
+
+	/* Check FIFO size? */
+	if (!ep_desc->wMaxPacketSize) {
+		DWC_WARN("%s, bad %s maxpacket\n", __func__, usb_ep->name);
+		return -ERANGE;
+	}
+
+	if (!gadget_wrapper->driver ||
+	    gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
+		DWC_WARN("%s, bogus device state\n", __func__);
+		return -ESHUTDOWN;
+	}
+
+	/* Delete after check - MAS */
+#if 0
+	nat = (uint32_t) ep_desc->wMaxPacketSize;
+	printk(KERN_ALERT "%s: nat (before) =%d\n", __func__, nat);
+	nat = (nat >> 11) & 0x03;
+	printk(KERN_ALERT "%s: nat (after) =%d\n", __func__, nat);
+#endif
+	retval = dwc_otg_pcd_ep_enable(gadget_wrapper->pcd,
+				       (const uint8_t *)ep_desc,
+				       (void *)usb_ep);
+	if (retval) {
+		DWC_WARN("dwc_otg_pcd_ep_enable failed\n");
+		return -EINVAL;
+	}
+
+	usb_ep->maxpacket = le16_to_cpu(ep_desc->wMaxPacketSize);
+
+	return 0;
+}
+
+/**
+ * This function is called when an EP is disabled due to disconnect or
+ * change in configuration. Any pending requests will terminate with a
+ * status of -ESHUTDOWN.
+ *
+ * This function modifies the dwc_otg_ep_t data structure for this EP,
+ * and then calls dwc_otg_ep_deactivate.
+ */
+static int ep_disable(struct usb_ep *usb_ep)
+{
+	int retval;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, usb_ep);
+	if (!usb_ep) {
+		DWC_DEBUGPL(DBG_PCD, "%s, %s not enabled\n", __func__,
+			    usb_ep ? usb_ep->name : NULL);
+		return -EINVAL;
+	}
+
+	retval = dwc_otg_pcd_ep_disable(gadget_wrapper->pcd, usb_ep);
+	if (retval) {
+		retval = -EINVAL;
+	}
+
+	return retval;
+}
+
+/**
+ * This function allocates a request object to use with the specified
+ * endpoint.
+ *
+ * @param ep The endpoint to be used with with the request
+ * @param gfp_flags the GFP_* flags to use.
+ */
+static struct usb_request *dwc_otg_pcd_alloc_request(struct usb_ep *ep,
+						     gfp_t gfp_flags)
+{
+	struct usb_request *usb_req;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%d)\n", __func__, ep, gfp_flags);
+	if (0 == ep) {
+		DWC_WARN("%s() %s\n", __func__, "Invalid EP!\n");
+		return 0;
+	}
+	usb_req = kmalloc(sizeof(*usb_req), gfp_flags);
+	if (0 == usb_req) {
+		DWC_WARN("%s() %s\n", __func__, "request allocation failed!\n");
+		return 0;
+	}
+	memset(usb_req, 0, sizeof(*usb_req));
+	usb_req->dma = DWC_DMA_ADDR_INVALID;
+
+	return usb_req;
+}
+
+/**
+ * This function frees a request object.
+ *
+ * @param ep The endpoint associated with the request
+ * @param req The request being freed
+ */
+static void dwc_otg_pcd_free_request(struct usb_ep *ep, struct usb_request *req)
+{
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, ep, req);
+
+	if (0 == ep || 0 == req) {
+		DWC_WARN("%s() %s\n", __func__,
+			 "Invalid ep or req argument!\n");
+		return;
+	}
+
+	kfree(req);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+/**
+ * This function allocates an I/O buffer to be used for a transfer
+ * to/from the specified endpoint.
+ *
+ * @param usb_ep The endpoint to be used with with the request
+ * @param bytes The desired number of bytes for the buffer
+ * @param dma Pointer to the buffer's DMA address; must be valid
+ * @param gfp_flags the GFP_* flags to use.
+ * @return address of a new buffer or null is buffer could not be allocated.
+ */
+static void *dwc_otg_pcd_alloc_buffer(struct usb_ep *usb_ep, unsigned bytes,
+				      dma_addr_t * dma, gfp_t gfp_flags)
+{
+	void *buf;
+	dwc_otg_pcd_t *pcd = 0;
+
+	pcd = gadget_wrapper->pcd;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%d,%p,%0x)\n", __func__, usb_ep, bytes,
+		    dma, gfp_flags);
+
+	/* Check dword alignment */
+	if ((bytes & 0x3UL) != 0) {
+		DWC_WARN("%s() Buffer size is not a multiple of"
+			 "DWORD size (%d)", __func__, bytes);
+	}
+
+	buf = dma_alloc_coherent(NULL, bytes, dma, gfp_flags);
+
+	/* Check dword alignment */
+	if (((int)buf & 0x3UL) != 0) {
+		DWC_WARN("%s() Buffer is not DWORD aligned (%p)",
+			 __func__, buf);
+	}
+
+	return buf;
+}
+
+/**
+ * This function frees an I/O buffer that was allocated by alloc_buffer.
+ *
+ * @param usb_ep the endpoint associated with the buffer
+ * @param buf address of the buffer
+ * @param dma The buffer's DMA address
+ * @param bytes The number of bytes of the buffer
+ */
+static void dwc_otg_pcd_free_buffer(struct usb_ep *usb_ep, void *buf,
+				    dma_addr_t dma, unsigned bytes)
+{
+	dwc_otg_pcd_t *pcd = 0;
+
+	pcd = gadget_wrapper->pcd;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%0x,%d)\n", __func__, buf, dma, bytes);
+
+	dma_free_coherent(NULL, bytes, buf, dma);
+}
+#endif
+
+/**
+ * This function is used to submit an I/O Request to an EP.
+ *
+ *	- When the request completes the request's completion callback
+ *	  is called to return the request to the driver.
+ *	- An EP, except control EPs, may have multiple requests
+ *	  pending.
+ *	- Once submitted the request cannot be examined or modified.
+ *	- Each request is turned into one or more packets.
+ *	- A BULK EP can queue any amount of data; the transfer is
+ *	  packetized.
+ *	- Zero length Packets are specified with the request 'zero'
+ *	  flag.
+ */
+static int ep_queue(struct usb_ep *usb_ep, struct usb_request *usb_req,
+		    gfp_t gfp_flags)
+{
+	dwc_otg_pcd_t *pcd;
+	struct dwc_otg_pcd_ep *ep = NULL;
+	int retval = 0, is_isoc_ep = 0;
+	dma_addr_t dma_addr = DWC_DMA_ADDR_INVALID;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p,%d)\n",
+		    __func__, usb_ep, usb_req, gfp_flags);
+
+	if (!usb_req || !usb_req->complete || !usb_req->buf) {
+		DWC_WARN("bad params\n");
+		return -EINVAL;
+	}
+
+	if (!usb_ep) {
+		DWC_WARN("bad ep\n");
+		return -EINVAL;
+	}
+
+	pcd = gadget_wrapper->pcd;
+	if (!gadget_wrapper->driver ||
+	    gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
+		DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n",
+			    gadget_wrapper->gadget.speed);
+		DWC_WARN("bogus device state\n");
+		return -ESHUTDOWN;
+	}
+
+	DWC_DEBUGPL(DBG_PCD, "%s queue req %p, len %d buf %p\n",
+		    usb_ep->name, usb_req, usb_req->length, usb_req->buf);
+
+	usb_req->status = -EINPROGRESS;
+	usb_req->actual = 0;
+
+	ep = ep_from_handle(pcd, usb_ep);
+	if (ep == NULL)
+		is_isoc_ep = 0;
+	else
+		is_isoc_ep = (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) ? 1 : 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+	dma_addr = usb_req->dma;
+#else
+	if (GET_CORE_IF(pcd)->dma_enable) {
+                dwc_otg_device_t *otg_dev = gadget_wrapper->pcd->otg_dev;
+                struct device *dev = NULL;
+
+                if (otg_dev != NULL)
+                        dev = DWC_OTG_OS_GETDEV(otg_dev->os_dep);
+
+		if (usb_req->length != 0 &&
+                    usb_req->dma == DWC_DMA_ADDR_INVALID) {
+                        dma_addr = dma_map_single(dev, usb_req->buf,
+                                                  usb_req->length,
+                                                  ep->dwc_ep.is_in ?
+                                                        DMA_TO_DEVICE:
+                                                        DMA_FROM_DEVICE);
+		}
+	}
+#endif
+
+#ifdef DWC_UTE_PER_IO
+	if (is_isoc_ep == 1) {
+		retval = dwc_otg_pcd_xiso_ep_queue(pcd, usb_ep, usb_req->buf, dma_addr,
+			usb_req->length, usb_req->zero, usb_req,
+			gfp_flags == GFP_ATOMIC ? 1 : 0, &usb_req->ext_req);
+		if (retval)
+			return -EINVAL;
+
+		return 0;
+	}
+#endif
+	retval = dwc_otg_pcd_ep_queue(pcd, usb_ep, usb_req->buf, dma_addr,
+				      usb_req->length, usb_req->zero, usb_req,
+				      gfp_flags == GFP_ATOMIC ? 1 : 0);
+	if (retval) {
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * This function cancels an I/O request from an EP.
+ */
+static int ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req)
+{
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, usb_ep, usb_req);
+
+	if (!usb_ep || !usb_req) {
+		DWC_WARN("bad argument\n");
+		return -EINVAL;
+	}
+	if (!gadget_wrapper->driver ||
+	    gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
+		DWC_WARN("bogus device state\n");
+		return -ESHUTDOWN;
+	}
+	if (dwc_otg_pcd_ep_dequeue(gadget_wrapper->pcd, usb_ep, usb_req)) {
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * usb_ep_set_halt stalls an endpoint.
+ *
+ * usb_ep_clear_halt clears an endpoint halt and resets its data
+ * toggle.
+ *
+ * Both of these functions are implemented with the same underlying
+ * function. The behavior depends on the value argument.
+ *
+ * @param[in] usb_ep the Endpoint to halt or clear halt.
+ * @param[in] value
+ *	- 0 means clear_halt.
+ *	- 1 means set_halt,
+ *	- 2 means clear stall lock flag.
+ *	- 3 means set  stall lock flag.
+ */
+static int ep_halt(struct usb_ep *usb_ep, int value)
+{
+	int retval = 0;
+
+	DWC_DEBUGPL(DBG_PCD, "HALT %s %d\n", usb_ep->name, value);
+
+	if (!usb_ep) {
+		DWC_WARN("bad ep\n");
+		return -EINVAL;
+	}
+
+	retval = dwc_otg_pcd_ep_halt(gadget_wrapper->pcd, usb_ep, value);
+	if (retval == -DWC_E_AGAIN) {
+		return -EAGAIN;
+	} else if (retval) {
+		retval = -EINVAL;
+	}
+
+	return retval;
+}
+
+//#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30))
+#if 0
+/**
+ * ep_wedge: sets the halt feature and ignores clear requests
+ *
+ * @usb_ep: the endpoint being wedged
+ *
+ * Use this to stall an endpoint and ignore CLEAR_FEATURE(HALT_ENDPOINT)
+ * requests. If the gadget driver clears the halt status, it will
+ * automatically unwedge the endpoint.
+ *
+ * Returns zero on success, else negative errno. *
+ * Check usb_ep_set_wedge() at "usb_gadget.h" for details
+ */
+static int ep_wedge(struct usb_ep *usb_ep)
+{
+	int retval = 0;
+
+	DWC_DEBUGPL(DBG_PCD, "WEDGE %s\n", usb_ep->name);
+
+	if (!usb_ep) {
+		DWC_WARN("bad ep\n");
+		return -EINVAL;
+	}
+
+	retval = dwc_otg_pcd_ep_wedge(gadget_wrapper->pcd, usb_ep);
+	if (retval == -DWC_E_AGAIN) {
+		retval = -EAGAIN;
+	} else if (retval) {
+		retval = -EINVAL;
+	}
+
+	return retval;
+}
+#endif
+
+#ifdef DWC_EN_ISOC
+/**
+ * This function is used to submit an ISOC Transfer Request to an EP.
+ *
+ *	- Every time a sync period completes the request's completion callback
+ *	  is called to provide data to the gadget driver.
+ *	- Once submitted the request cannot be modified.
+ *	- Each request is turned into periodic data packets untill ISO
+ *	  Transfer is stopped..
+ */
+static int iso_ep_start(struct usb_ep *usb_ep, struct usb_iso_request *req,
+			gfp_t gfp_flags)
+{
+	int retval = 0;
+
+	if (!req || !req->process_buffer || !req->buf0 || !req->buf1) {
+		DWC_WARN("bad params\n");
+		return -EINVAL;
+	}
+
+	if (!usb_ep) {
+		DWC_PRINTF("bad params\n");
+		return -EINVAL;
+	}
+
+	req->status = -EINPROGRESS;
+
+	retval =
+	    dwc_otg_pcd_iso_ep_start(gadget_wrapper->pcd, usb_ep, req->buf0,
+				     req->buf1, req->dma0, req->dma1,
+				     req->sync_frame, req->data_pattern_frame,
+				     req->data_per_frame,
+				     req->
+				     flags & USB_REQ_ISO_ASAP ? -1 :
+				     req->start_frame, req->buf_proc_intrvl,
+				     req, gfp_flags == GFP_ATOMIC ? 1 : 0);
+
+	if (retval) {
+		return -EINVAL;
+	}
+
+	return retval;
+}
+
+/**
+ * This function stops ISO EP Periodic Data Transfer.
+ */
+static int iso_ep_stop(struct usb_ep *usb_ep, struct usb_iso_request *req)
+{
+	int retval = 0;
+	if (!usb_ep) {
+		DWC_WARN("bad ep\n");
+	}
+
+	if (!gadget_wrapper->driver ||
+	    gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
+		DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n",
+			    gadget_wrapper->gadget.speed);
+		DWC_WARN("bogus device state\n");
+	}
+
+	dwc_otg_pcd_iso_ep_stop(gadget_wrapper->pcd, usb_ep, req);
+	if (retval) {
+		retval = -EINVAL;
+	}
+
+	return retval;
+}
+
+static struct usb_iso_request *alloc_iso_request(struct usb_ep *ep,
+						 int packets, gfp_t gfp_flags)
+{
+	struct usb_iso_request *pReq = NULL;
+	uint32_t req_size;
+
+	req_size = sizeof(struct usb_iso_request);
+	req_size +=
+	    (2 * packets * (sizeof(struct usb_gadget_iso_packet_descriptor)));
+
+	pReq = kmalloc(req_size, gfp_flags);
+	if (!pReq) {
+		DWC_WARN("Can't allocate Iso Request\n");
+		return 0;
+	}
+	pReq->iso_packet_desc0 = (void *)(pReq + 1);
+
+	pReq->iso_packet_desc1 = pReq->iso_packet_desc0 + packets;
+
+	return pReq;
+}
+
+static void free_iso_request(struct usb_ep *ep, struct usb_iso_request *req)
+{
+	kfree(req);
+}
+
+static struct usb_isoc_ep_ops dwc_otg_pcd_ep_ops = {
+	.ep_ops = {
+		   .enable = ep_enable,
+		   .disable = ep_disable,
+
+		   .alloc_request = dwc_otg_pcd_alloc_request,
+		   .free_request = dwc_otg_pcd_free_request,
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+		   .alloc_buffer = dwc_otg_pcd_alloc_buffer,
+		   .free_buffer = dwc_otg_pcd_free_buffer,
+#endif
+
+		   .queue = ep_queue,
+		   .dequeue = ep_dequeue,
+
+		   .set_halt = ep_halt,
+		   .fifo_status = 0,
+		   .fifo_flush = 0,
+		   },
+	.iso_ep_start = iso_ep_start,
+	.iso_ep_stop = iso_ep_stop,
+	.alloc_iso_request = alloc_iso_request,
+	.free_iso_request = free_iso_request,
+};
+
+#else
+
+	int (*enable) (struct usb_ep *ep,
+		const struct usb_endpoint_descriptor *desc);
+	int (*disable) (struct usb_ep *ep);
+
+	struct usb_request *(*alloc_request) (struct usb_ep *ep,
+		gfp_t gfp_flags);
+	void (*free_request) (struct usb_ep *ep, struct usb_request *req);
+
+	int (*queue) (struct usb_ep *ep, struct usb_request *req,
+		gfp_t gfp_flags);
+	int (*dequeue) (struct usb_ep *ep, struct usb_request *req);
+
+	int (*set_halt) (struct usb_ep *ep, int value);
+	int (*set_wedge) (struct usb_ep *ep);
+
+	int (*fifo_status) (struct usb_ep *ep);
+	void (*fifo_flush) (struct usb_ep *ep);
+static struct usb_ep_ops dwc_otg_pcd_ep_ops = {
+	.enable = ep_enable,
+	.disable = ep_disable,
+
+	.alloc_request = dwc_otg_pcd_alloc_request,
+	.free_request = dwc_otg_pcd_free_request,
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+	.alloc_buffer = dwc_otg_pcd_alloc_buffer,
+	.free_buffer = dwc_otg_pcd_free_buffer,
+#else
+	/* .set_wedge = ep_wedge, */
+        .set_wedge = NULL, /* uses set_halt instead */
+#endif
+
+	.queue = ep_queue,
+	.dequeue = ep_dequeue,
+
+	.set_halt = ep_halt,
+	.fifo_status = 0,
+	.fifo_flush = 0,
+
+};
+
+#endif /* _EN_ISOC_ */
+/*	Gadget Operations */
+/**
+ * The following gadget operations will be implemented in the DWC_otg
+ * PCD. Functions in the API that are not described below are not
+ * implemented.
+ *
+ * The Gadget API provides wrapper functions for each of the function
+ * pointers defined in usb_gadget_ops. The Gadget Driver calls the
+ * wrapper function, which then calls the underlying PCD function. The
+ * following sections are named according to the wrapper functions
+ * (except for ioctl, which doesn't have a wrapper function). Within
+ * each section, the corresponding DWC_otg PCD function name is
+ * specified.
+ *
+ */
+
+/**
+ *Gets the USB Frame number of the last SOF.
+ */
+static int get_frame_number(struct usb_gadget *gadget)
+{
+	struct gadget_wrapper *d;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, gadget);
+
+	if (gadget == 0) {
+		return -ENODEV;
+	}
+
+	d = container_of(gadget, struct gadget_wrapper, gadget);
+	return dwc_otg_pcd_get_frame_number(d->pcd);
+}
+
+#ifdef CONFIG_USB_DWC_OTG_LPM
+static int test_lpm_enabled(struct usb_gadget *gadget)
+{
+	struct gadget_wrapper *d;
+
+	d = container_of(gadget, struct gadget_wrapper, gadget);
+
+	return dwc_otg_pcd_is_lpm_enabled(d->pcd);
+}
+#endif
+
+/**
+ * Initiates Session Request Protocol (SRP) to wakeup the host if no
+ * session is in progress. If a session is already in progress, but
+ * the device is suspended, remote wakeup signaling is started.
+ *
+ */
+static int wakeup(struct usb_gadget *gadget)
+{
+	struct gadget_wrapper *d;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, gadget);
+
+	if (gadget == 0) {
+		return -ENODEV;
+	} else {
+		d = container_of(gadget, struct gadget_wrapper, gadget);
+	}
+	dwc_otg_pcd_wakeup(d->pcd);
+	return 0;
+}
+
+static const struct usb_gadget_ops dwc_otg_pcd_ops = {
+	.get_frame = get_frame_number,
+	.wakeup = wakeup,
+#ifdef CONFIG_USB_DWC_OTG_LPM
+	.lpm_support = test_lpm_enabled,
+#endif
+	// current versions must always be self-powered
+};
+
+static int _setup(dwc_otg_pcd_t * pcd, uint8_t * bytes)
+{
+	int retval = -DWC_E_NOT_SUPPORTED;
+	if (gadget_wrapper->driver && gadget_wrapper->driver->setup) {
+		retval = gadget_wrapper->driver->setup(&gadget_wrapper->gadget,
+						       (struct usb_ctrlrequest
+							*)bytes);
+	}
+
+	if (retval == -ENOTSUPP) {
+		retval = -DWC_E_NOT_SUPPORTED;
+	} else if (retval < 0) {
+		retval = -DWC_E_INVALID;
+	}
+
+	return retval;
+}
+
+#ifdef DWC_EN_ISOC
+static int _isoc_complete(dwc_otg_pcd_t * pcd, void *ep_handle,
+			  void *req_handle, int proc_buf_num)
+{
+	int i, packet_count;
+	struct usb_gadget_iso_packet_descriptor *iso_packet = 0;
+	struct usb_iso_request *iso_req = req_handle;
+
+	if (proc_buf_num) {
+		iso_packet = iso_req->iso_packet_desc1;
+	} else {
+		iso_packet = iso_req->iso_packet_desc0;
+	}
+	packet_count =
+	    dwc_otg_pcd_get_iso_packet_count(pcd, ep_handle, req_handle);
+	for (i = 0; i < packet_count; ++i) {
+		int status;
+		int actual;
+		int offset;
+		dwc_otg_pcd_get_iso_packet_params(pcd, ep_handle, req_handle,
+						  i, &status, &actual, &offset);
+		switch (status) {
+		case -DWC_E_NO_DATA:
+			status = -ENODATA;
+			break;
+		default:
+			if (status) {
+				DWC_PRINTF("unknown status in isoc packet\n");
+			}
+
+		}
+		iso_packet[i].status = status;
+		iso_packet[i].offset = offset;
+		iso_packet[i].actual_length = actual;
+	}
+
+	iso_req->status = 0;
+	iso_req->process_buffer(ep_handle, iso_req);
+
+	return 0;
+}
+#endif /* DWC_EN_ISOC */
+
+#ifdef DWC_UTE_PER_IO
+/**
+ * Copy the contents of the extended request to the Linux usb_request's
+ * extended part and call the gadget's completion.
+ *
+ * @param pcd			Pointer to the pcd structure
+ * @param ep_handle		Void pointer to the usb_ep structure
+ * @param req_handle	Void pointer to the usb_request structure
+ * @param status		Request status returned from the portable logic
+ * @param ereq_port		Void pointer to the extended request structure
+ *						created in the the portable part that contains the
+ *						results of the processed iso packets.
+ */
+static int _xisoc_complete(dwc_otg_pcd_t * pcd, void *ep_handle,
+			   void *req_handle, int32_t status, void *ereq_port)
+{
+	struct dwc_ute_iso_req_ext *ereqorg = NULL;
+	struct dwc_iso_xreq_port *ereqport = NULL;
+	struct dwc_ute_iso_packet_descriptor *desc_org = NULL;
+	int i;
+	struct usb_request *req;
+	//struct dwc_ute_iso_packet_descriptor *
+	//int status = 0;
+
+	req = (struct usb_request *)req_handle;
+	ereqorg = &req->ext_req;
+	ereqport = (struct dwc_iso_xreq_port *)ereq_port;
+	desc_org = ereqorg->per_io_frame_descs;
+
+	if (req && req->complete) {
+		/* Copy the request data from the portable logic to our request */
+		for (i = 0; i < ereqport->pio_pkt_count; i++) {
+			desc_org[i].actual_length =
+			    ereqport->per_io_frame_descs[i].actual_length;
+			desc_org[i].status =
+			    ereqport->per_io_frame_descs[i].status;
+		}
+
+		switch (status) {
+		case -DWC_E_SHUTDOWN:
+			req->status = -ESHUTDOWN;
+			break;
+		case -DWC_E_RESTART:
+			req->status = -ECONNRESET;
+			break;
+		case -DWC_E_INVALID:
+			req->status = -EINVAL;
+			break;
+		case -DWC_E_TIMEOUT:
+			req->status = -ETIMEDOUT;
+			break;
+		default:
+			req->status = status;
+		}
+
+		/* And call the gadget's completion */
+		req->complete(ep_handle, req);
+	}
+
+	return 0;
+}
+#endif /* DWC_UTE_PER_IO */
+
+static int _complete(dwc_otg_pcd_t * pcd, void *ep_handle,
+		     void *req_handle, int32_t status, uint32_t actual)
+{
+	struct usb_request *req = (struct usb_request *)req_handle;
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27)
+	struct dwc_otg_pcd_ep *ep = NULL;
+#endif
+
+	if (req && req->complete) {
+		switch (status) {
+		case -DWC_E_SHUTDOWN:
+			req->status = -ESHUTDOWN;
+			break;
+		case -DWC_E_RESTART:
+			req->status = -ECONNRESET;
+			break;
+		case -DWC_E_INVALID:
+			req->status = -EINVAL;
+			break;
+		case -DWC_E_TIMEOUT:
+			req->status = -ETIMEDOUT;
+			break;
+		default:
+			req->status = status;
+
+		}
+
+		req->actual = actual;
+		DWC_SPINUNLOCK(pcd->lock);
+		req->complete(ep_handle, req);
+		DWC_SPINLOCK(pcd->lock);
+	}
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27)
+	ep = ep_from_handle(pcd, ep_handle);
+	if (GET_CORE_IF(pcd)->dma_enable) {
+                if (req->length != 0) {
+                        dwc_otg_device_t *otg_dev = gadget_wrapper->pcd->otg_dev;
+                        struct device *dev = NULL;
+
+                        if (otg_dev != NULL)
+                                  dev = DWC_OTG_OS_GETDEV(otg_dev->os_dep);
+
+			dma_unmap_single(dev, req->dma, req->length,
+                                         ep->dwc_ep.is_in ?
+                                                DMA_TO_DEVICE: DMA_FROM_DEVICE);
+                }
+	}
+#endif
+
+	return 0;
+}
+
+static int _connect(dwc_otg_pcd_t * pcd, int speed)
+{
+	gadget_wrapper->gadget.speed = speed;
+	return 0;
+}
+
+static int _disconnect(dwc_otg_pcd_t * pcd)
+{
+	if (gadget_wrapper->driver && gadget_wrapper->driver->disconnect) {
+		gadget_wrapper->driver->disconnect(&gadget_wrapper->gadget);
+	}
+	return 0;
+}
+
+static int _resume(dwc_otg_pcd_t * pcd)
+{
+	if (gadget_wrapper->driver && gadget_wrapper->driver->resume) {
+		gadget_wrapper->driver->resume(&gadget_wrapper->gadget);
+	}
+
+	return 0;
+}
+
+static int _suspend(dwc_otg_pcd_t * pcd)
+{
+	if (gadget_wrapper->driver && gadget_wrapper->driver->suspend) {
+		gadget_wrapper->driver->suspend(&gadget_wrapper->gadget);
+	}
+	return 0;
+}
+
+/**
+ * This function updates the otg values in the gadget structure.
+ */
+static int _hnp_changed(dwc_otg_pcd_t * pcd)
+{
+
+	if (!gadget_wrapper->gadget.is_otg)
+		return 0;
+
+	gadget_wrapper->gadget.b_hnp_enable = get_b_hnp_enable(pcd);
+	gadget_wrapper->gadget.a_hnp_support = get_a_hnp_support(pcd);
+	gadget_wrapper->gadget.a_alt_hnp_support = get_a_alt_hnp_support(pcd);
+	return 0;
+}
+
+static int _reset(dwc_otg_pcd_t * pcd)
+{
+	return 0;
+}
+
+#ifdef DWC_UTE_CFI
+static int _cfi_setup(dwc_otg_pcd_t * pcd, void *cfi_req)
+{
+	int retval = -DWC_E_INVALID;
+	if (gadget_wrapper->driver->cfi_feature_setup) {
+		retval =
+		    gadget_wrapper->driver->
+		    cfi_feature_setup(&gadget_wrapper->gadget,
+				      (struct cfi_usb_ctrlrequest *)cfi_req);
+	}
+
+	return retval;
+}
+#endif
+
+static const struct dwc_otg_pcd_function_ops fops = {
+	.complete = _complete,
+#ifdef DWC_EN_ISOC
+	.isoc_complete = _isoc_complete,
+#endif
+	.setup = _setup,
+	.disconnect = _disconnect,
+	.connect = _connect,
+	.resume = _resume,
+	.suspend = _suspend,
+	.hnp_changed = _hnp_changed,
+	.reset = _reset,
+#ifdef DWC_UTE_CFI
+	.cfi_setup = _cfi_setup,
+#endif
+#ifdef DWC_UTE_PER_IO
+	.xisoc_complete = _xisoc_complete,
+#endif
+};
+
+/**
+ * This function is the top level PCD interrupt handler.
+ */
+static irqreturn_t dwc_otg_pcd_irq(int irq, void *dev)
+{
+	dwc_otg_pcd_t *pcd = dev;
+	int32_t retval = IRQ_NONE;
+
+	retval = dwc_otg_pcd_handle_intr(pcd);
+	if (retval != 0) {
+		S3C2410X_CLEAR_EINTPEND();
+	}
+	return IRQ_RETVAL(retval);
+}
+
+/**
+ * This function initialized the usb_ep structures to there default
+ * state.
+ *
+ * @param d Pointer on gadget_wrapper.
+ */
+void gadget_add_eps(struct gadget_wrapper *d)
+{
+	static const char *names[] = {
+
+		"ep0",
+		"ep1in",
+		"ep2in",
+		"ep3in",
+		"ep4in",
+		"ep5in",
+		"ep6in",
+		"ep7in",
+		"ep8in",
+		"ep9in",
+		"ep10in",
+		"ep11in",
+		"ep12in",
+		"ep13in",
+		"ep14in",
+		"ep15in",
+		"ep1out",
+		"ep2out",
+		"ep3out",
+		"ep4out",
+		"ep5out",
+		"ep6out",
+		"ep7out",
+		"ep8out",
+		"ep9out",
+		"ep10out",
+		"ep11out",
+		"ep12out",
+		"ep13out",
+		"ep14out",
+		"ep15out"
+	};
+
+	int i;
+	struct usb_ep *ep;
+	int8_t dev_endpoints;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s\n", __func__);
+
+	INIT_LIST_HEAD(&d->gadget.ep_list);
+	d->gadget.ep0 = &d->ep0;
+	d->gadget.speed = USB_SPEED_UNKNOWN;
+
+	INIT_LIST_HEAD(&d->gadget.ep0->ep_list);
+
+	/**
+	 * Initialize the EP0 structure.
+	 */
+	ep = &d->ep0;
+
+	/* Init the usb_ep structure. */
+	ep->name = names[0];
+	ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
+
+	/**
+	 * @todo NGS: What should the max packet size be set to
+	 * here?  Before EP type is set?
+	 */
+	ep->maxpacket = MAX_PACKET_SIZE;
+	dwc_otg_pcd_ep_enable(d->pcd, NULL, ep);
+
+	list_add_tail(&ep->ep_list, &d->gadget.ep_list);
+
+	/**
+	 * Initialize the EP structures.
+	 */
+	dev_endpoints = d->pcd->core_if->dev_if->num_in_eps;
+
+	for (i = 0; i < dev_endpoints; i++) {
+		ep = &d->in_ep[i];
+
+		/* Init the usb_ep structure. */
+		ep->name = names[d->pcd->in_ep[i].dwc_ep.num];
+		ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
+
+		/**
+		 * @todo NGS: What should the max packet size be set to
+		 * here?  Before EP type is set?
+		 */
+		ep->maxpacket = MAX_PACKET_SIZE;
+		list_add_tail(&ep->ep_list, &d->gadget.ep_list);
+	}
+
+	dev_endpoints = d->pcd->core_if->dev_if->num_out_eps;
+
+	for (i = 0; i < dev_endpoints; i++) {
+		ep = &d->out_ep[i];
+
+		/* Init the usb_ep structure. */
+		ep->name = names[15 + d->pcd->out_ep[i].dwc_ep.num];
+		ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
+
+		/**
+		 * @todo NGS: What should the max packet size be set to
+		 * here?  Before EP type is set?
+		 */
+		ep->maxpacket = MAX_PACKET_SIZE;
+
+		list_add_tail(&ep->ep_list, &d->gadget.ep_list);
+	}
+
+	/* remove ep0 from the list.  There is a ep0 pointer. */
+	list_del_init(&d->ep0.ep_list);
+
+	d->ep0.maxpacket = MAX_EP0_SIZE;
+}
+
+/**
+ * This function releases the Gadget device.
+ * required by device_unregister().
+ *
+ * @todo Should this do something?	Should it free the PCD?
+ */
+static void dwc_otg_pcd_gadget_release(struct device *dev)
+{
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, dev);
+}
+
+static struct gadget_wrapper *alloc_wrapper(dwc_bus_dev_t *_dev)
+{
+	static char pcd_name[] = "dwc_otg_pcd";
+	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+	struct gadget_wrapper *d;
+	int retval;
+
+	d = DWC_ALLOC(sizeof(*d));
+	if (d == NULL) {
+		return NULL;
+	}
+
+	memset(d, 0, sizeof(*d));
+
+	d->gadget.name = pcd_name;
+	d->pcd = otg_dev->pcd;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
+	strcpy(d->gadget.dev.bus_id, "gadget");
+#else
+	dev_set_name(&d->gadget.dev, "%s", "gadget");
+#endif
+
+	d->gadget.dev.parent = &_dev->dev;
+	d->gadget.dev.release = dwc_otg_pcd_gadget_release;
+	d->gadget.ops = &dwc_otg_pcd_ops;
+	d->gadget.max_speed = dwc_otg_pcd_is_dualspeed(otg_dev->pcd) ? USB_SPEED_HIGH:USB_SPEED_FULL;
+	d->gadget.is_otg = dwc_otg_pcd_is_otg(otg_dev->pcd);
+
+	d->driver = 0;
+	/* Register the gadget device */
+	retval = device_register(&d->gadget.dev);
+	if (retval != 0) {
+		DWC_ERROR("device_register failed\n");
+		DWC_FREE(d);
+		return NULL;
+	}
+
+	return d;
+}
+
+static void free_wrapper(struct gadget_wrapper *d)
+{
+	if (d->driver) {
+		/* should have been done already by driver model core */
+		DWC_WARN("driver '%s' is still registered\n",
+			 d->driver->driver.name);
+		usb_gadget_unregister_driver(d->driver);
+	}
+
+	device_unregister(&d->gadget.dev);
+	DWC_FREE(d);
+}
+
+/**
+ * This function initialized the PCD portion of the driver.
+ *
+ */
+int pcd_init(dwc_bus_dev_t *_dev)
+{
+	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+	int retval = 0;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p) otg_dev=%p\n", __func__, _dev, otg_dev);
+
+	otg_dev->pcd = dwc_otg_pcd_init(otg_dev->core_if);
+
+	if (!otg_dev->pcd) {
+		DWC_ERROR("dwc_otg_pcd_init failed\n");
+		return -ENOMEM;
+	}
+
+	otg_dev->pcd->otg_dev = otg_dev;
+	gadget_wrapper = alloc_wrapper(_dev);
+
+	/*
+	 * Initialize EP structures
+	 */
+	gadget_add_eps(gadget_wrapper);
+	/*
+	 * Setup interupt handler
+	 */
+#ifdef PLATFORM_INTERFACE
+	DWC_DEBUGPL(DBG_ANY, "registering handler for irq%d\n",
+                    platform_get_irq(_dev, fiq_enable ? 0 : 1));
+	retval = request_irq(platform_get_irq(_dev, fiq_enable ? 0 : 1), dwc_otg_pcd_irq,
+			     IRQF_SHARED, gadget_wrapper->gadget.name,
+			     otg_dev->pcd);
+	if (retval != 0) {
+		DWC_ERROR("request of irq%d failed\n",
+                          platform_get_irq(_dev, fiq_enable ? 0 : 1));
+		free_wrapper(gadget_wrapper);
+		return -EBUSY;
+	}
+#else
+	DWC_DEBUGPL(DBG_ANY, "registering handler for irq%d\n",
+                    _dev->irq);
+	retval = request_irq(_dev->irq, dwc_otg_pcd_irq,
+			     IRQF_SHARED | IRQF_DISABLED,
+			     gadget_wrapper->gadget.name, otg_dev->pcd);
+	if (retval != 0) {
+		DWC_ERROR("request of irq%d failed\n", _dev->irq);
+		free_wrapper(gadget_wrapper);
+		return -EBUSY;
+	}
+#endif
+
+	dwc_otg_pcd_start(gadget_wrapper->pcd, &fops);
+
+	return retval;
+}
+
+/**
+ * Cleanup the PCD.
+ */
+void pcd_remove(dwc_bus_dev_t *_dev)
+{
+	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
+	dwc_otg_pcd_t *pcd = otg_dev->pcd;
+
+	DWC_DEBUGPL(DBG_PCDV, "%s(%p) otg_dev %p\n", __func__, _dev, otg_dev);
+
+	/*
+	 * Free the IRQ
+	 */
+#ifdef PLATFORM_INTERFACE
+	free_irq(platform_get_irq(_dev, 0), pcd);
+#else
+	free_irq(_dev->irq, pcd);
+#endif
+	dwc_otg_pcd_remove(otg_dev->pcd);
+	free_wrapper(gadget_wrapper);
+	otg_dev->pcd = 0;
+}
+
+/**
+ * This function registers a gadget driver with the PCD.
+ *
+ * When a driver is successfully registered, it will receive control
+ * requests including set_configuration(), which enables non-control
+ * requests.  then usb traffic follows until a disconnect is reported.
+ * then a host may connect again, or the driver might get unbound.
+ *
+ * @param driver The driver being registered
+ * @param bind The bind function of gadget driver
+ */
+
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver)
+{
+	int retval;
+
+	DWC_DEBUGPL(DBG_PCD, "registering gadget driver '%s'\n",
+		    driver->driver.name);
+
+	if (!driver || driver->max_speed == USB_SPEED_UNKNOWN ||
+	    !driver->bind ||
+	    !driver->unbind || !driver->disconnect || !driver->setup) {
+		DWC_DEBUGPL(DBG_PCDV, "EINVAL\n");
+		return -EINVAL;
+	}
+	if (gadget_wrapper == 0) {
+		DWC_DEBUGPL(DBG_PCDV, "ENODEV\n");
+		return -ENODEV;
+	}
+	if (gadget_wrapper->driver != 0) {
+		DWC_DEBUGPL(DBG_PCDV, "EBUSY (%p)\n", gadget_wrapper->driver);
+		return -EBUSY;
+	}
+
+	/* hook up the driver */
+	gadget_wrapper->driver = driver;
+	gadget_wrapper->gadget.dev.driver = &driver->driver;
+
+	DWC_DEBUGPL(DBG_PCD, "bind to driver %s\n", driver->driver.name);
+	retval = driver->bind(&gadget_wrapper->gadget, gadget_wrapper->driver);
+	if (retval) {
+		DWC_ERROR("bind to driver %s --> error %d\n",
+			  driver->driver.name, retval);
+		gadget_wrapper->driver = 0;
+		gadget_wrapper->gadget.dev.driver = 0;
+		return retval;
+	}
+	DWC_DEBUGPL(DBG_ANY, "registered gadget driver '%s'\n",
+		    driver->driver.name);
+	return 0;
+}
+EXPORT_SYMBOL(usb_gadget_probe_driver);
+
+/**
+ * This function unregisters a gadget driver
+ *
+ * @param driver The driver being unregistered
+ */
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+	//DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n", __func__, _driver);
+
+	if (gadget_wrapper == 0) {
+		DWC_DEBUGPL(DBG_ANY, "%s Return(%d): s_pcd==0\n", __func__,
+			    -ENODEV);
+		return -ENODEV;
+	}
+	if (driver == 0 || driver != gadget_wrapper->driver) {
+		DWC_DEBUGPL(DBG_ANY, "%s Return(%d): driver?\n", __func__,
+			    -EINVAL);
+		return -EINVAL;
+	}
+
+	driver->unbind(&gadget_wrapper->gadget);
+	gadget_wrapper->driver = 0;
+
+	DWC_DEBUGPL(DBG_ANY, "unregistered driver '%s'\n", driver->driver.name);
+	return 0;
+}
+
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+#endif /* DWC_HOST_ONLY */
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_regs.h linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_regs.h
--- linux-3.18.10/drivers/usb/host/dwc_otg/dwc_otg_regs.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/dwc_otg_regs.h	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,2550 @@
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_regs.h $
+ * $Revision: #98 $
+ * $Date: 2012/08/10 $
+ * $Change: 2047372 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_REGS_H__
+#define __DWC_OTG_REGS_H__
+
+#include "dwc_otg_core_if.h"
+
+/**
+ * @file
+ *
+ * This file contains the data structures for accessing the DWC_otg core registers.
+ *
+ * The application interfaces with the HS OTG core by reading from and
+ * writing to the Control and Status Register (CSR) space through the
+ * AHB Slave interface. These registers are 32 bits wide, and the
+ * addresses are 32-bit-block aligned.
+ * CSRs are classified as follows:
+ * - Core Global Registers
+ * - Device Mode Registers
+ * - Device Global Registers
+ * - Device Endpoint Specific Registers
+ * - Host Mode Registers
+ * - Host Global Registers
+ * - Host Port CSRs
+ * - Host Channel Specific Registers
+ *
+ * Only the Core Global registers can be accessed in both Device and
+ * Host modes. When the HS OTG core is operating in one mode, either
+ * Device or Host, the application must not access registers from the
+ * other mode. When the core switches from one mode to another, the
+ * registers in the new mode of operation must be reprogrammed as they
+ * would be after a power-on reset.
+ */
+
+/****************************************************************************/
+/** DWC_otg Core registers .
+ * The dwc_otg_core_global_regs structure defines the size
+ * and relative field offsets for the Core Global registers.
+ */
+typedef struct dwc_otg_core_global_regs {
+	/** OTG Control and Status Register.  <i>Offset: 000h</i> */
+	volatile uint32_t gotgctl;
+	/** OTG Interrupt Register.	 <i>Offset: 004h</i> */
+	volatile uint32_t gotgint;
+	/**Core AHB Configuration Register.	 <i>Offset: 008h</i> */
+	volatile uint32_t gahbcfg;
+
+#define DWC_GLBINTRMASK		0x0001
+#define DWC_DMAENABLE		0x0020
+#define DWC_NPTXEMPTYLVL_EMPTY	0x0080
+#define DWC_NPTXEMPTYLVL_HALFEMPTY	0x0000
+#define DWC_PTXEMPTYLVL_EMPTY	0x0100
+#define DWC_PTXEMPTYLVL_HALFEMPTY	0x0000
+
+	/**Core USB Configuration Register.	 <i>Offset: 00Ch</i> */
+	volatile uint32_t gusbcfg;
+	/**Core Reset Register.	 <i>Offset: 010h</i> */
+	volatile uint32_t grstctl;
+	/**Core Interrupt Register.	 <i>Offset: 014h</i> */
+	volatile uint32_t gintsts;
+	/**Core Interrupt Mask Register.  <i>Offset: 018h</i> */
+	volatile uint32_t gintmsk;
+	/**Receive Status Queue Read Register (Read Only).	<i>Offset: 01Ch</i> */
+	volatile uint32_t grxstsr;
+	/**Receive Status Queue Read & POP Register (Read Only).  <i>Offset: 020h</i>*/
+	volatile uint32_t grxstsp;
+	/**Receive FIFO Size Register.	<i>Offset: 024h</i> */
+	volatile uint32_t grxfsiz;
+	/**Non Periodic Transmit FIFO Size Register.  <i>Offset: 028h</i> */
+	volatile uint32_t gnptxfsiz;
+	/**Non Periodic Transmit FIFO/Queue Status Register (Read
+	 * Only). <i>Offset: 02Ch</i> */
+	volatile uint32_t gnptxsts;
+	/**I2C Access Register.	 <i>Offset: 030h</i> */
+	volatile uint32_t gi2cctl;
+	/**PHY Vendor Control Register.	 <i>Offset: 034h</i> */
+	volatile uint32_t gpvndctl;
+	/**General Purpose Input/Output Register.  <i>Offset: 038h</i> */
+	volatile uint32_t ggpio;
+	/**User ID Register.  <i>Offset: 03Ch</i> */
+	volatile uint32_t guid;
+	/**Synopsys ID Register (Read Only).  <i>Offset: 040h</i> */
+	volatile uint32_t gsnpsid;
+	/**User HW Config1 Register (Read Only).  <i>Offset: 044h</i> */
+	volatile uint32_t ghwcfg1;
+	/**User HW Config2 Register (Read Only).  <i>Offset: 048h</i> */
+	volatile uint32_t ghwcfg2;
+#define DWC_SLAVE_ONLY_ARCH 0
+#define DWC_EXT_DMA_ARCH 1
+#define DWC_INT_DMA_ARCH 2
+
+#define DWC_MODE_HNP_SRP_CAPABLE	0
+#define DWC_MODE_SRP_ONLY_CAPABLE	1
+#define DWC_MODE_NO_HNP_SRP_CAPABLE		2
+#define DWC_MODE_SRP_CAPABLE_DEVICE		3
+#define DWC_MODE_NO_SRP_CAPABLE_DEVICE	4
+#define DWC_MODE_SRP_CAPABLE_HOST	5
+#define DWC_MODE_NO_SRP_CAPABLE_HOST	6
+
+	/**User HW Config3 Register (Read Only).  <i>Offset: 04Ch</i> */
+	volatile uint32_t ghwcfg3;
+	/**User HW Config4 Register (Read Only).  <i>Offset: 050h</i>*/
+	volatile uint32_t ghwcfg4;
+	/** Core LPM Configuration register <i>Offset: 054h</i>*/
+	volatile uint32_t glpmcfg;
+	/** Global PowerDn Register <i>Offset: 058h</i> */
+	volatile uint32_t gpwrdn;
+	/** Global DFIFO SW Config Register  <i>Offset: 05Ch</i> */
+	volatile uint32_t gdfifocfg;
+	/** ADP Control Register  <i>Offset: 060h</i> */
+	volatile uint32_t adpctl;
+	/** Reserved  <i>Offset: 064h-0FFh</i> */
+	volatile uint32_t reserved39[39];
+	/** Host Periodic Transmit FIFO Size Register. <i>Offset: 100h</i> */
+	volatile uint32_t hptxfsiz;
+	/** Device Periodic Transmit FIFO#n Register if dedicated fifos are disabled,
+		otherwise Device Transmit FIFO#n Register.
+	 * <i>Offset: 104h + (FIFO_Number-1)*04h, 1 <= FIFO Number <= 15 (1<=n<=15).</i> */
+	volatile uint32_t dtxfsiz[15];
+} dwc_otg_core_global_regs_t;
+
+/**
+ * This union represents the bit fields of the Core OTG Control
+ * and Status Register (GOTGCTL).  Set the bits using the bit
+ * fields then write the <i>d32</i> value to the register.
+ */
+typedef union gotgctl_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned sesreqscs:1;
+		unsigned sesreq:1;
+		unsigned vbvalidoven:1;
+		unsigned vbvalidovval:1;
+		unsigned avalidoven:1;
+		unsigned avalidovval:1;
+		unsigned bvalidoven:1;
+		unsigned bvalidovval:1;
+		unsigned hstnegscs:1;
+		unsigned hnpreq:1;
+		unsigned hstsethnpen:1;
+		unsigned devhnpen:1;
+		unsigned reserved12_15:4;
+		unsigned conidsts:1;
+		unsigned dbnctime:1;
+		unsigned asesvld:1;
+		unsigned bsesvld:1;
+		unsigned otgver:1;
+		unsigned reserved1:1;
+		unsigned multvalidbc:5;
+		unsigned chirpen:1;
+		unsigned reserved28_31:4;
+	} b;
+} gotgctl_data_t;
+
+/**
+ * This union represents the bit fields of the Core OTG Interrupt Register
+ * (GOTGINT).  Set/clear the bits using the bit fields then write the <i>d32</i>
+ * value to the register.
+ */
+typedef union gotgint_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Current Mode */
+		unsigned reserved0_1:2;
+
+		/** Session End Detected */
+		unsigned sesenddet:1;
+
+		unsigned reserved3_7:5;
+
+		/** Session Request Success Status Change */
+		unsigned sesreqsucstschng:1;
+		/** Host Negotiation Success Status Change */
+		unsigned hstnegsucstschng:1;
+
+		unsigned reserved10_16:7;
+
+		/** Host Negotiation Detected */
+		unsigned hstnegdet:1;
+		/** A-Device Timeout Change */
+		unsigned adevtoutchng:1;
+		/** Debounce Done */
+		unsigned debdone:1;
+		/** Multi-Valued input changed */
+		unsigned mvic:1;
+
+		unsigned reserved31_21:11;
+
+	} b;
+} gotgint_data_t;
+
+/**
+ * This union represents the bit fields of the Core AHB Configuration
+ * Register (GAHBCFG). Set/clear the bits using the bit fields then
+ * write the <i>d32</i> value to the register.
+ */
+typedef union gahbcfg_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned glblintrmsk:1;
+#define DWC_GAHBCFG_GLBINT_ENABLE		1
+
+		unsigned hburstlen:4;
+#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE	0
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR		1
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR4		3
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR8		5
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR16	7
+
+		unsigned dmaenable:1;
+#define DWC_GAHBCFG_DMAENABLE			1
+		unsigned reserved:1;
+		unsigned nptxfemplvl_txfemplvl:1;
+		unsigned ptxfemplvl:1;
+#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY		1
+#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY	0
+		unsigned reserved9_20:12;
+		unsigned remmemsupp:1;
+		unsigned notialldmawrit:1;
+		unsigned ahbsingle:1;
+		unsigned reserved24_31:8;
+	} b;
+} gahbcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core USB Configuration
+ * Register (GUSBCFG). Set the bits using the bit fields then write
+ * the <i>d32</i> value to the register.
+ */
+typedef union gusbcfg_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned toutcal:3;
+		unsigned phyif:1;
+		unsigned ulpi_utmi_sel:1;
+		unsigned fsintf:1;
+		unsigned physel:1;
+		unsigned ddrsel:1;
+		unsigned srpcap:1;
+		unsigned hnpcap:1;
+		unsigned usbtrdtim:4;
+		unsigned reserved1:1;
+		unsigned phylpwrclksel:1;
+		unsigned otgutmifssel:1;
+		unsigned ulpi_fsls:1;
+		unsigned ulpi_auto_res:1;
+		unsigned ulpi_clk_sus_m:1;
+		unsigned ulpi_ext_vbus_drv:1;
+		unsigned ulpi_int_vbus_indicator:1;
+		unsigned term_sel_dl_pulse:1;
+		unsigned indicator_complement:1;
+		unsigned indicator_pass_through:1;
+		unsigned ulpi_int_prot_dis:1;
+		unsigned ic_usb_cap:1;
+		unsigned ic_traffic_pull_remove:1;
+		unsigned tx_end_delay:1;
+		unsigned force_host_mode:1;
+		unsigned force_dev_mode:1;
+		unsigned reserved31:1;
+	} b;
+} gusbcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core Reset Register
+ * (GRSTCTL).  Set/clear the bits using the bit fields then write the
+ * <i>d32</i> value to the register.
+ */
+typedef union grstctl_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Core Soft Reset (CSftRst) (Device and Host)
+		 *
+		 * The application can flush the control logic in the
+		 * entire core using this bit. This bit resets the
+		 * pipelines in the AHB Clock domain as well as the
+		 * PHY Clock domain.
+		 *
+		 * The state machines are reset to an IDLE state, the
+		 * control bits in the CSRs are cleared, all the
+		 * transmit FIFOs and the receive FIFO are flushed.
+		 *
+		 * The status mask bits that control the generation of
+		 * the interrupt, are cleared, to clear the
+		 * interrupt. The interrupt status bits are not
+		 * cleared, so the application can get the status of
+		 * any events that occurred in the core after it has
+		 * set this bit.
+		 *
+		 * Any transactions on the AHB are terminated as soon
+		 * as possible following the protocol. Any
+		 * transactions on the USB are terminated immediately.
+		 *
+		 * The configuration settings in the CSRs are
+		 * unchanged, so the software doesn't have to
+		 * reprogram these registers (Device
+		 * Configuration/Host Configuration/Core System
+		 * Configuration/Core PHY Configuration).
+		 *
+		 * The application can write to this bit, any time it
+		 * wants to reset the core. This is a self clearing
+		 * bit and the core clears this bit after all the
+		 * necessary logic is reset in the core, which may
+		 * take several clocks, depending on the current state
+		 * of the core.
+		 */
+		unsigned csftrst:1;
+		/** Hclk Soft Reset
+		 *
+		 * The application uses this bit to reset the control logic in
+		 * the AHB clock domain. Only AHB clock domain pipelines are
+		 * reset.
+		 */
+		unsigned hsftrst:1;
+		/** Host Frame Counter Reset (Host Only)<br>
+		 *
+		 * The application can reset the (micro)frame number
+		 * counter inside the core, using this bit. When the
+		 * (micro)frame counter is reset, the subsequent SOF
+		 * sent out by the core, will have a (micro)frame
+		 * number of 0.
+		 */
+		unsigned hstfrm:1;
+		/** In Token Sequence Learning Queue Flush
+		 * (INTknQFlsh) (Device Only)
+		 */
+		unsigned intknqflsh:1;
+		/** RxFIFO Flush (RxFFlsh) (Device and Host)
+		 *
+		 * The application can flush the entire Receive FIFO
+		 * using this bit. The application must first
+		 * ensure that the core is not in the middle of a
+		 * transaction. The application should write into
+		 * this bit, only after making sure that neither the
+		 * DMA engine is reading from the RxFIFO nor the MAC
+		 * is writing the data in to the FIFO. The
+		 * application should wait until the bit is cleared
+		 * before performing any other operations. This bit
+		 * will takes 8 clocks (slowest of PHY or AHB clock)
+		 * to clear.
+		 */
+		unsigned rxfflsh:1;
+		/** TxFIFO Flush (TxFFlsh) (Device and Host).
+		 *
+		 * This bit is used to selectively flush a single or
+		 * all transmit FIFOs. The application must first
+		 * ensure that the core is not in the middle of a
+		 * transaction. The application should write into
+		 * this bit, only after making sure that neither the
+		 * DMA engine is writing into the TxFIFO nor the MAC
+		 * is reading the data out of the FIFO. The
+		 * application should wait until the core clears this
+		 * bit, before performing any operations. This bit
+		 * will takes 8 clocks (slowest of PHY or AHB clock)
+		 * to clear.
+		 */
+		unsigned txfflsh:1;
+
+		/** TxFIFO Number (TxFNum) (Device and Host).
+		 *
+		 * This is the FIFO number which needs to be flushed,
+		 * using the TxFIFO Flush bit. This field should not
+		 * be changed until the TxFIFO Flush bit is cleared by
+		 * the core.
+		 *	 - 0x0 : Non Periodic TxFIFO Flush
+		 *	 - 0x1 : Periodic TxFIFO #1 Flush in device mode
+		 *	   or Periodic TxFIFO in host mode
+		 *	 - 0x2 : Periodic TxFIFO #2 Flush in device mode.
+		 *	 - ...
+		 *	 - 0xF : Periodic TxFIFO #15 Flush in device mode
+		 *	 - 0x10: Flush all the Transmit NonPeriodic and
+		 *	   Transmit Periodic FIFOs in the core
+		 */
+		unsigned txfnum:5;
+		/** Reserved */
+		unsigned reserved11_29:19;
+		/** DMA Request Signal.	 Indicated DMA request is in
+		 * probress. Used for debug purpose. */
+		unsigned dmareq:1;
+		/** AHB Master Idle.  Indicates the AHB Master State
+		 * Machine is in IDLE condition. */
+		unsigned ahbidle:1;
+	} b;
+} grstctl_t;
+
+/**
+ * This union represents the bit fields of the Core Interrupt Mask
+ * Register (GINTMSK). Set/clear the bits using the bit fields then
+ * write the <i>d32</i> value to the register.
+ */
+typedef union gintmsk_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned reserved0:1;
+		unsigned modemismatch:1;
+		unsigned otgintr:1;
+		unsigned sofintr:1;
+		unsigned rxstsqlvl:1;
+		unsigned nptxfempty:1;
+		unsigned ginnakeff:1;
+		unsigned goutnakeff:1;
+		unsigned ulpickint:1;
+		unsigned i2cintr:1;
+		unsigned erlysuspend:1;
+		unsigned usbsuspend:1;
+		unsigned usbreset:1;
+		unsigned enumdone:1;
+		unsigned isooutdrop:1;
+		unsigned eopframe:1;
+		unsigned restoredone:1;
+		unsigned epmismatch:1;
+		unsigned inepintr:1;
+		unsigned outepintr:1;
+		unsigned incomplisoin:1;
+		unsigned incomplisoout:1;
+		unsigned fetsusp:1;
+		unsigned resetdet:1;
+		unsigned portintr:1;
+		unsigned hcintr:1;
+		unsigned ptxfempty:1;
+		unsigned lpmtranrcvd:1;
+		unsigned conidstschng:1;
+		unsigned disconnect:1;
+		unsigned sessreqintr:1;
+		unsigned wkupintr:1;
+	} b;
+} gintmsk_data_t;
+/**
+ * This union represents the bit fields of the Core Interrupt Register
+ * (GINTSTS).  Set/clear the bits using the bit fields then write the
+ * <i>d32</i> value to the register.
+ */
+typedef union gintsts_data {
+	/** raw register data */
+	uint32_t d32;
+#define DWC_SOF_INTR_MASK 0x0008
+	/** register bits */
+	struct {
+#define DWC_HOST_MODE 1
+		unsigned curmode:1;
+		unsigned modemismatch:1;
+		unsigned otgintr:1;
+		unsigned sofintr:1;
+		unsigned rxstsqlvl:1;
+		unsigned nptxfempty:1;
+		unsigned ginnakeff:1;
+		unsigned goutnakeff:1;
+		unsigned ulpickint:1;
+		unsigned i2cintr:1;
+		unsigned erlysuspend:1;
+		unsigned usbsuspend:1;
+		unsigned usbreset:1;
+		unsigned enumdone:1;
+		unsigned isooutdrop:1;
+		unsigned eopframe:1;
+		unsigned restoredone:1;
+		unsigned epmismatch:1;
+		unsigned inepint:1;
+		unsigned outepintr:1;
+		unsigned incomplisoin:1;
+		unsigned incomplisoout:1;
+		unsigned fetsusp:1;
+		unsigned resetdet:1;
+		unsigned portintr:1;
+		unsigned hcintr:1;
+		unsigned ptxfempty:1;
+		unsigned lpmtranrcvd:1;
+		unsigned conidstschng:1;
+		unsigned disconnect:1;
+		unsigned sessreqintr:1;
+		unsigned wkupintr:1;
+	} b;
+} gintsts_data_t;
+
+/**
+ * This union represents the bit fields in the Device Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
+ * element then read out the bits using the <i>b</i>it elements.
+ */
+typedef union device_grxsts_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned epnum:4;
+		unsigned bcnt:11;
+		unsigned dpid:2;
+
+#define DWC_STS_DATA_UPDT		0x2	// OUT Data Packet
+#define DWC_STS_XFER_COMP		0x3	// OUT Data Transfer Complete
+
+#define DWC_DSTS_GOUT_NAK		0x1	// Global OUT NAK
+#define DWC_DSTS_SETUP_COMP		0x4	// Setup Phase Complete
+#define DWC_DSTS_SETUP_UPDT 0x6	// SETUP Packet
+		unsigned pktsts:4;
+		unsigned fn:4;
+		unsigned reserved25_31:7;
+	} b;
+} device_grxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Host Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
+ * element then read out the bits using the <i>b</i>it elements.
+ */
+typedef union host_grxsts_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned chnum:4;
+		unsigned bcnt:11;
+		unsigned dpid:2;
+
+		unsigned pktsts:4;
+#define DWC_GRXSTS_PKTSTS_IN			  0x2
+#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP	  0x3
+#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR 0x5
+#define DWC_GRXSTS_PKTSTS_CH_HALTED		  0x7
+
+		unsigned reserved21_31:11;
+	} b;
+} host_grxsts_data_t;
+
+/**
+ * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ,
+ * GNPTXFSIZ, DPTXFSIZn, DIEPTXFn). Read the register into the <i>d32</i> element
+ * then read out the bits using the <i>b</i>it elements.
+ */
+typedef union fifosize_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned startaddr:16;
+		unsigned depth:16;
+	} b;
+} fifosize_data_t;
+
+/**
+ * This union represents the bit fields in the Non-Periodic Transmit
+ * FIFO/Queue Status Register (GNPTXSTS). Read the register into the
+ * <i>d32</i> element then read out the bits using the <i>b</i>it
+ * elements.
+ */
+typedef union gnptxsts_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned nptxfspcavail:16;
+		unsigned nptxqspcavail:8;
+		/** Top of the Non-Periodic Transmit Request Queue
+		 *	- bit 24 - Terminate (Last entry for the selected
+		 *	  channel/EP)
+		 *	- bits 26:25 - Token Type
+		 *	  - 2'b00 - IN/OUT
+		 *	  - 2'b01 - Zero Length OUT
+		 *	  - 2'b10 - PING/Complete Split
+		 *	  - 2'b11 - Channel Halt
+		 *	- bits 30:27 - Channel/EP Number
+		 */
+		unsigned nptxqtop_terminate:1;
+		unsigned nptxqtop_token:2;
+		unsigned nptxqtop_chnep:4;
+		unsigned reserved:1;
+	} b;
+} gnptxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Transmit
+ * FIFO Status Register (DTXFSTS). Read the register into the
+ * <i>d32</i> element then read out the bits using the <i>b</i>it
+ * elements.
+ */
+typedef union dtxfsts_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned txfspcavail:16;
+		unsigned reserved:16;
+	} b;
+} dtxfsts_data_t;
+
+/**
+ * This union represents the bit fields in the I2C Control Register
+ * (I2CCTL). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gi2cctl_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned rwdata:8;
+		unsigned regaddr:8;
+		unsigned addr:7;
+		unsigned i2cen:1;
+		unsigned ack:1;
+		unsigned i2csuspctl:1;
+		unsigned i2cdevaddr:2;
+		unsigned i2cdatse0:1;
+		unsigned reserved:1;
+		unsigned rw:1;
+		unsigned bsydne:1;
+	} b;
+} gi2cctl_data_t;
+
+/**
+ * This union represents the bit fields in the PHY Vendor Control Register
+ * (GPVNDCTL). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gpvndctl_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned regdata:8;
+		unsigned vctrl:8;
+		unsigned regaddr16_21:6;
+		unsigned regwr:1;
+		unsigned reserved23_24:2;
+		unsigned newregreq:1;
+		unsigned vstsbsy:1;
+		unsigned vstsdone:1;
+		unsigned reserved28_30:3;
+		unsigned disulpidrvr:1;
+	} b;
+} gpvndctl_data_t;
+
+/**
+ * This union represents the bit fields in the General Purpose
+ * Input/Output Register (GGPIO).
+ * Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union ggpio_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned gpi:16;
+		unsigned gpo:16;
+	} b;
+} ggpio_data_t;
+
+/**
+ * This union represents the bit fields in the User ID Register
+ * (GUID). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union guid_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned rwdata:32;
+	} b;
+} guid_data_t;
+
+/**
+ * This union represents the bit fields in the Synopsys ID Register
+ * (GSNPSID). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gsnpsid_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned rwdata:32;
+	} b;
+} gsnpsid_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config1
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg1_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned ep_dir0:2;
+		unsigned ep_dir1:2;
+		unsigned ep_dir2:2;
+		unsigned ep_dir3:2;
+		unsigned ep_dir4:2;
+		unsigned ep_dir5:2;
+		unsigned ep_dir6:2;
+		unsigned ep_dir7:2;
+		unsigned ep_dir8:2;
+		unsigned ep_dir9:2;
+		unsigned ep_dir10:2;
+		unsigned ep_dir11:2;
+		unsigned ep_dir12:2;
+		unsigned ep_dir13:2;
+		unsigned ep_dir14:2;
+		unsigned ep_dir15:2;
+	} b;
+} hwcfg1_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config2
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg2_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/* GHWCFG2 */
+		unsigned op_mode:3;
+#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG 0
+#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG 1
+#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG 2
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE 3
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE 4
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST 5
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST 6
+
+		unsigned architecture:2;
+		unsigned point2point:1;
+		unsigned hs_phy_type:2;
+#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED 0
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI 1
+#define DWC_HWCFG2_HS_PHY_TYPE_ULPI 2
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI 3
+
+		unsigned fs_phy_type:2;
+		unsigned num_dev_ep:4;
+		unsigned num_host_chan:4;
+		unsigned perio_ep_supported:1;
+		unsigned dynamic_fifo:1;
+		unsigned multi_proc_int:1;
+		unsigned reserved21:1;
+		unsigned nonperio_tx_q_depth:2;
+		unsigned host_perio_tx_q_depth:2;
+		unsigned dev_token_q_depth:5;
+		unsigned otg_enable_ic_usb:1;
+	} b;
+} hwcfg2_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config3
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg3_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/* GHWCFG3 */
+		unsigned xfer_size_cntr_width:4;
+		unsigned packet_size_cntr_width:3;
+		unsigned otg_func:1;
+		unsigned i2c:1;
+		unsigned vendor_ctrl_if:1;
+		unsigned optional_features:1;
+		unsigned synch_reset_type:1;
+		unsigned adp_supp:1;
+		unsigned otg_enable_hsic:1;
+		unsigned bc_support:1;
+		unsigned otg_lpm_en:1;
+		unsigned dfifo_depth:16;
+	} b;
+} hwcfg3_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config4
+ * Register.  Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg4_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned num_dev_perio_in_ep:4;
+		unsigned power_optimiz:1;
+		unsigned min_ahb_freq:1;
+		unsigned hiber:1;
+		unsigned xhiber:1;
+		unsigned reserved:6;
+		unsigned utmi_phy_data_width:2;
+		unsigned num_dev_mode_ctrl_ep:4;
+		unsigned iddig_filt_en:1;
+		unsigned vbus_valid_filt_en:1;
+		unsigned a_valid_filt_en:1;
+		unsigned b_valid_filt_en:1;
+		unsigned session_end_filt_en:1;
+		unsigned ded_fifo_en:1;
+		unsigned num_in_eps:4;
+		unsigned desc_dma:1;
+		unsigned desc_dma_dyn:1;
+	} b;
+} hwcfg4_data_t;
+
+/**
+ * This union represents the bit fields of the Core LPM Configuration
+ * Register (GLPMCFG). Set the bits using bit fields then write
+ * the <i>d32</i> value to the register.
+ */
+typedef union glpmctl_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** LPM-Capable (LPMCap) (Device and Host)
+		 * The application uses this bit to control
+		 * the DWC_otg core LPM capabilities.
+		 */
+		unsigned lpm_cap_en:1;
+		/** LPM response programmed by application (AppL1Res) (Device)
+		 * Handshake response to LPM token pre-programmed
+		 * by device application software.
+		 */
+		unsigned appl_resp:1;
+		/** Host Initiated Resume Duration (HIRD) (Device and Host)
+		 * In Host mode this field indicates the value of HIRD
+		 * to be sent in an LPM transaction.
+		 * In Device mode this field is updated with the
+		 * Received LPM Token HIRD bmAttribute
+		 * when an ACK/NYET/STALL response is sent
+		 * to an LPM transaction.
+		 */
+		unsigned hird:4;
+		/** RemoteWakeEnable (bRemoteWake) (Device and Host)
+		 * In Host mode this bit indicates the value of remote
+		 * wake up to be sent in wIndex field of LPM transaction.
+		 * In Device mode this field is updated with the
+		 * Received LPM Token bRemoteWake bmAttribute
+		 * when an ACK/NYET/STALL response is sent
+		 * to an LPM transaction.
+		 */
+		unsigned rem_wkup_en:1;
+		/** Enable utmi_sleep_n (EnblSlpM) (Device and Host)
+		 * The application uses this bit to control
+		 * the utmi_sleep_n assertion to the PHY when in L1 state.
+		 */
+		unsigned en_utmi_sleep:1;
+		/** HIRD Threshold (HIRD_Thres) (Device and Host)
+		 */
+		unsigned hird_thres:5;
+		/** LPM Response (CoreL1Res) (Device and Host)
+		 * In Host mode this bit contains handsake response to
+		 * LPM transaction.
+		 * In Device mode the response of the core to
+		 * LPM transaction received is reflected in these two bits.
+			- 0x0 : ERROR (No handshake response)
+			- 0x1 : STALL
+			- 0x2 : NYET
+			- 0x3 : ACK
+		 */
+		unsigned lpm_resp:2;
+		/** Port Sleep Status (SlpSts) (Device and Host)
+		 * This bit is set as long as a Sleep condition
+		 * is present on the USB bus.
+		 */
+		unsigned prt_sleep_sts:1;
+		/** Sleep State Resume OK (L1ResumeOK) (Device and Host)
+		 * Indicates that the application or host
+		 * can start resume from Sleep state.
+		 */
+		unsigned sleep_state_resumeok:1;
+		/** LPM channel Index (LPM_Chnl_Indx) (Host)
+		 * The channel number on which the LPM transaction
+		 * has to be applied while sending
+		 * an LPM transaction to the local device.
+		 */
+		unsigned lpm_chan_index:4;
+		/** LPM Retry Count (LPM_Retry_Cnt) (Host)
+		 * Number host retries that would be performed
+		 * if the device response was not valid response.
+		 */
+		unsigned retry_count:3;
+		/** Send LPM Transaction (SndLPM) (Host)
+		 * When set by application software,
+		 * an LPM transaction containing two tokens
+		 * is sent.
+		 */
+		unsigned send_lpm:1;
+		/** LPM Retry status (LPM_RetryCnt_Sts) (Host)
+		 * Number of LPM Host Retries still remaining
+		 * to be transmitted for the current LPM sequence
+		 */
+		unsigned retry_count_sts:3;
+		unsigned reserved28_29:2;
+		/** In host mode once this bit is set, the host
+		 * configures to drive the HSIC Idle state on the bus.
+		 * It then waits for the  device to initiate the Connect sequence.
+		 * In device mode once this bit is set, the device waits for
+		 * the HSIC Idle line state on the bus. Upon receving the Idle
+		 * line state, it initiates the HSIC Connect sequence.
+		 */
+		unsigned hsic_connect:1;
+		/** This bit overrides and functionally inverts
+		 * the if_select_hsic input port signal.
+		 */
+		unsigned inv_sel_hsic:1;
+	} b;
+} glpmcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core ADP Timer, Control and
+ * Status Register (ADPTIMCTLSTS). Set the bits using bit fields then write
+ * the <i>d32</i> value to the register.
+ */
+typedef union adpctl_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Probe Discharge (PRB_DSCHG)
+		 *  These bits set the times for TADP_DSCHG.
+		 *  These bits are defined as follows:
+		 *  2'b00 - 4 msec
+		 *  2'b01 - 8 msec
+		 *  2'b10 - 16 msec
+		 *  2'b11 - 32 msec
+		 */
+		unsigned prb_dschg:2;
+		/** Probe Delta (PRB_DELTA)
+		 *  These bits set the resolution for RTIM   value.
+		 *  The bits are defined in units of 32 kHz clock cycles as follows:
+		 *  2'b00  -  1 cycles
+		 *  2'b01  -  2 cycles
+		 *  2'b10 -  3 cycles
+		 *  2'b11 - 4 cycles
+		 *  For example if this value is chosen to 2'b01, it means that RTIM
+		 *  increments for every 3(three) 32Khz clock cycles.
+		 */
+		unsigned prb_delta:2;
+		/** Probe Period (PRB_PER)
+		 *  These bits sets the TADP_PRD as shown in Figure 4 as follows:
+		 *  2'b00  -  0.625 to 0.925 sec (typical 0.775 sec)
+		 *  2'b01  -  1.25 to 1.85 sec (typical 1.55 sec)
+		 *  2'b10  -  1.9 to 2.6 sec (typical 2.275 sec)
+		 *  2'b11  -  Reserved
+		 */
+		unsigned prb_per:2;
+		/** These bits capture the latest time it took for VBUS to ramp from
+		 *  VADP_SINK to VADP_PRB.
+		 *  0x000  -  1 cycles
+		 *  0x001  -  2 cycles
+		 *  0x002  -  3 cycles
+		 *  etc
+		 *  0x7FF  -  2048 cycles
+		 *  A time of 1024 cycles at 32 kHz corresponds to a time of 32 msec.
+		*/
+		unsigned rtim:11;
+		/** Enable Probe (EnaPrb)
+		 *  When programmed to 1'b1, the core performs a probe operation.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned enaprb:1;
+		/** Enable Sense (EnaSns)
+		 *  When programmed to 1'b1, the core performs a Sense operation.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned enasns:1;
+		/** ADP Reset (ADPRes)
+		 *  When set, ADP controller is reset.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned adpres:1;
+		/** ADP Enable (ADPEn)
+		 *  When set, the core performs either ADP probing or sensing
+		 *  based on EnaPrb or EnaSns.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned adpen:1;
+		/** ADP Probe Interrupt (ADP_PRB_INT)
+		 *  When this bit is set, it means that the VBUS
+		 *  voltage is greater than VADP_PRB or VADP_PRB is reached.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned adp_prb_int:1;
+		/**
+		 *  ADP Sense Interrupt (ADP_SNS_INT)
+		 *  When this bit is set, it means that the VBUS voltage is greater than
+		 *  VADP_SNS value or VADP_SNS is reached.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned adp_sns_int:1;
+		/** ADP Tomeout Interrupt (ADP_TMOUT_INT)
+		 *  This bit is relevant only for an ADP probe.
+		 *  When this bit is set, it means that the ramp time has
+		 *  completed ie ADPCTL.RTIM has reached its terminal value
+		 *  of 0x7FF.  This is a debug feature that allows software
+		 *  to read the ramp time after each cycle.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned adp_tmout_int:1;
+		/** ADP Probe Interrupt Mask (ADP_PRB_INT_MSK)
+		 *  When this bit is set, it unmasks the interrupt due to ADP_PRB_INT.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned adp_prb_int_msk:1;
+		/** ADP Sense Interrupt Mask (ADP_SNS_INT_MSK)
+		 *  When this bit is set, it unmasks the interrupt due to ADP_SNS_INT.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned adp_sns_int_msk:1;
+		/** ADP Timoeout Interrupt Mask (ADP_TMOUT_MSK)
+		 *  When this bit is set, it unmasks the interrupt due to ADP_TMOUT_INT.
+		 *  This bit is valid only if OTG_Ver = 1'b1.
+		 */
+		unsigned adp_tmout_int_msk:1;
+		/** Access Request
+		 * 2'b00 - Read/Write Valid (updated by the core)
+		 * 2'b01 - Read
+		 * 2'b00 - Write
+		 * 2'b00 - Reserved
+		 */
+		unsigned ar:2;
+		 /** Reserved */
+		unsigned reserved29_31:3;
+	} b;
+} adpctl_data_t;
+
+////////////////////////////////////////////
+// Device Registers
+/**
+ * Device Global Registers. <i>Offsets 800h-BFFh</i>
+ *
+ * The following structures define the size and relative field offsets
+ * for the Device Mode Registers.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_global_regs {
+	/** Device Configuration Register. <i>Offset 800h</i> */
+	volatile uint32_t dcfg;
+	/** Device Control Register. <i>Offset: 804h</i> */
+	volatile uint32_t dctl;
+	/** Device Status Register (Read Only). <i>Offset: 808h</i> */
+	volatile uint32_t dsts;
+	/** Reserved. <i>Offset: 80Ch</i> */
+	uint32_t unused;
+	/** Device IN Endpoint Common Interrupt Mask
+	 * Register. <i>Offset: 810h</i> */
+	volatile uint32_t diepmsk;
+	/** Device OUT Endpoint Common Interrupt Mask
+	 * Register. <i>Offset: 814h</i> */
+	volatile uint32_t doepmsk;
+	/** Device All Endpoints Interrupt Register.  <i>Offset: 818h</i> */
+	volatile uint32_t daint;
+	/** Device All Endpoints Interrupt Mask Register.  <i>Offset:
+	 * 81Ch</i> */
+	volatile uint32_t daintmsk;
+	/** Device IN Token Queue Read Register-1 (Read Only).
+	 * <i>Offset: 820h</i> */
+	volatile uint32_t dtknqr1;
+	/** Device IN Token Queue Read Register-2 (Read Only).
+	 * <i>Offset: 824h</i> */
+	volatile uint32_t dtknqr2;
+	/** Device VBUS	 discharge Register.  <i>Offset: 828h</i> */
+	volatile uint32_t dvbusdis;
+	/** Device VBUS Pulse Register.	 <i>Offset: 82Ch</i> */
+	volatile uint32_t dvbuspulse;
+	/** Device IN Token Queue Read Register-3 (Read Only). /
+	 *	Device Thresholding control register (Read/Write)
+	 * <i>Offset: 830h</i> */
+	volatile uint32_t dtknqr3_dthrctl;
+	/** Device IN Token Queue Read Register-4 (Read Only). /
+	 *	Device IN EPs empty Inr. Mask Register (Read/Write)
+	 * <i>Offset: 834h</i> */
+	volatile uint32_t dtknqr4_fifoemptymsk;
+	/** Device Each Endpoint Interrupt Register (Read Only). /
+	 * <i>Offset: 838h</i> */
+	volatile uint32_t deachint;
+	/** Device Each Endpoint Interrupt mask Register (Read/Write). /
+	 * <i>Offset: 83Ch</i> */
+	volatile uint32_t deachintmsk;
+	/** Device Each In Endpoint Interrupt mask Register (Read/Write). /
+	 * <i>Offset: 840h</i> */
+	volatile uint32_t diepeachintmsk[MAX_EPS_CHANNELS];
+	/** Device Each Out Endpoint Interrupt mask Register (Read/Write). /
+	 * <i>Offset: 880h</i> */
+	volatile uint32_t doepeachintmsk[MAX_EPS_CHANNELS];
+} dwc_otg_device_global_regs_t;
+
+/**
+ * This union represents the bit fields in the Device Configuration
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.  Write the
+ * <i>d32</i> member to the dcfg register.
+ */
+typedef union dcfg_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Device Speed */
+		unsigned devspd:2;
+		/** Non Zero Length Status OUT Handshake */
+		unsigned nzstsouthshk:1;
+#define DWC_DCFG_SEND_STALL 1
+
+		unsigned ena32khzs:1;
+		/** Device Addresses */
+		unsigned devaddr:7;
+		/** Periodic Frame Interval */
+		unsigned perfrint:2;
+#define DWC_DCFG_FRAME_INTERVAL_80 0
+#define DWC_DCFG_FRAME_INTERVAL_85 1
+#define DWC_DCFG_FRAME_INTERVAL_90 2
+#define DWC_DCFG_FRAME_INTERVAL_95 3
+
+		/** Enable Device OUT NAK for bulk in DDMA mode */
+		unsigned endevoutnak:1;
+
+		unsigned reserved14_17:4;
+		/** In Endpoint Mis-match count */
+		unsigned epmscnt:5;
+		/** Enable Descriptor DMA in Device mode */
+		unsigned descdma:1;
+		unsigned perschintvl:2;
+		unsigned resvalid:6;
+	} b;
+} dcfg_data_t;
+
+/**
+ * This union represents the bit fields in the Device Control
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union dctl_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Remote Wakeup */
+		unsigned rmtwkupsig:1;
+		/** Soft Disconnect */
+		unsigned sftdiscon:1;
+		/** Global Non-Periodic IN NAK Status */
+		unsigned gnpinnaksts:1;
+		/** Global OUT NAK Status */
+		unsigned goutnaksts:1;
+		/** Test Control */
+		unsigned tstctl:3;
+		/** Set Global Non-Periodic IN NAK */
+		unsigned sgnpinnak:1;
+		/** Clear Global Non-Periodic IN NAK */
+		unsigned cgnpinnak:1;
+		/** Set Global OUT NAK */
+		unsigned sgoutnak:1;
+		/** Clear Global OUT NAK */
+		unsigned cgoutnak:1;
+		/** Power-On Programming Done */
+		unsigned pwronprgdone:1;
+		/** Reserved */
+		unsigned reserved:1;
+		/** Global Multi Count */
+		unsigned gmc:2;
+		/** Ignore Frame Number for ISOC EPs */
+		unsigned ifrmnum:1;
+		/** NAK on Babble */
+		unsigned nakonbble:1;
+		/** Enable Continue on BNA */
+		unsigned encontonbna:1;
+
+		unsigned reserved18_31:14;
+	} b;
+} dctl_data_t;
+
+/**
+ * This union represents the bit fields in the Device Status
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union dsts_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Suspend Status */
+		unsigned suspsts:1;
+		/** Enumerated Speed */
+		unsigned enumspd:2;
+#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ 0
+#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ 1
+#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ		   2
+#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ		   3
+		/** Erratic Error */
+		unsigned errticerr:1;
+		unsigned reserved4_7:4;
+		/** Frame or Microframe Number of the received SOF */
+		unsigned soffn:14;
+		unsigned reserved22_31:10;
+	} b;
+} dsts_data_t;
+
+/**
+ * This union represents the bit fields in the Device IN EP Interrupt
+ * Register and the Device IN EP Common Mask Register.
+ *
+ * - Read the register into the <i>d32</i> member then set/clear the
+ *	 bits using the <i>b</i>it elements.
+ */
+typedef union diepint_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Transfer complete mask */
+		unsigned xfercompl:1;
+		/** Endpoint disable mask */
+		unsigned epdisabled:1;
+		/** AHB Error mask */
+		unsigned ahberr:1;
+		/** TimeOUT Handshake mask (non-ISOC EPs) */
+		unsigned timeout:1;
+		/** IN Token received with TxF Empty mask */
+		unsigned intktxfemp:1;
+		/** IN Token Received with EP mismatch mask */
+		unsigned intknepmis:1;
+		/** IN Endpoint NAK Effective mask */
+		unsigned inepnakeff:1;
+		/** Reserved */
+		unsigned emptyintr:1;
+
+		unsigned txfifoundrn:1;
+
+		/** BNA Interrupt mask */
+		unsigned bna:1;
+
+		unsigned reserved10_12:3;
+		/** BNA Interrupt mask */
+		unsigned nak:1;
+
+		unsigned reserved14_31:18;
+	} b;
+} diepint_data_t;
+
+/**
+ * This union represents the bit fields in the Device IN EP
+ * Common/Dedicated Interrupt Mask Register.
+ */
+typedef union diepint_data diepmsk_data_t;
+
+/**
+ * This union represents the bit fields in the Device OUT EP Interrupt
+ * Registerand Device OUT EP Common Interrupt Mask Register.
+ *
+ * - Read the register into the <i>d32</i> member then set/clear the
+ *	 bits using the <i>b</i>it elements.
+ */
+typedef union doepint_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Transfer complete */
+		unsigned xfercompl:1;
+		/** Endpoint disable  */
+		unsigned epdisabled:1;
+		/** AHB Error */
+		unsigned ahberr:1;
+		/** Setup Phase Done (contorl EPs) */
+		unsigned setup:1;
+		/** OUT Token Received when Endpoint Disabled */
+		unsigned outtknepdis:1;
+
+		unsigned stsphsercvd:1;
+		/** Back-to-Back SETUP Packets Received */
+		unsigned back2backsetup:1;
+
+		unsigned reserved7:1;
+		/** OUT packet Error */
+		unsigned outpkterr:1;
+		/** BNA Interrupt */
+		unsigned bna:1;
+
+		unsigned reserved10:1;
+		/** Packet Drop Status */
+		unsigned pktdrpsts:1;
+		/** Babble Interrupt */
+		unsigned babble:1;
+		/** NAK Interrupt */
+		unsigned nak:1;
+		/** NYET Interrupt */
+		unsigned nyet:1;
+		/** Bit indicating setup packet received */
+		unsigned sr:1;
+
+		unsigned reserved16_31:16;
+	} b;
+} doepint_data_t;
+
+/**
+ * This union represents the bit fields in the Device OUT EP
+ * Common/Dedicated Interrupt Mask Register.
+ */
+typedef union doepint_data doepmsk_data_t;
+
+/**
+ * This union represents the bit fields in the Device All EP Interrupt
+ * and Mask Registers.
+ * - Read the register into the <i>d32</i> member then set/clear the
+ *	 bits using the <i>b</i>it elements.
+ */
+typedef union daint_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** IN Endpoint bits */
+		unsigned in:16;
+		/** OUT Endpoint bits */
+		unsigned out:16;
+	} ep;
+	struct {
+		/** IN Endpoint bits */
+		unsigned inep0:1;
+		unsigned inep1:1;
+		unsigned inep2:1;
+		unsigned inep3:1;
+		unsigned inep4:1;
+		unsigned inep5:1;
+		unsigned inep6:1;
+		unsigned inep7:1;
+		unsigned inep8:1;
+		unsigned inep9:1;
+		unsigned inep10:1;
+		unsigned inep11:1;
+		unsigned inep12:1;
+		unsigned inep13:1;
+		unsigned inep14:1;
+		unsigned inep15:1;
+		/** OUT Endpoint bits */
+		unsigned outep0:1;
+		unsigned outep1:1;
+		unsigned outep2:1;
+		unsigned outep3:1;
+		unsigned outep4:1;
+		unsigned outep5:1;
+		unsigned outep6:1;
+		unsigned outep7:1;
+		unsigned outep8:1;
+		unsigned outep9:1;
+		unsigned outep10:1;
+		unsigned outep11:1;
+		unsigned outep12:1;
+		unsigned outep13:1;
+		unsigned outep14:1;
+		unsigned outep15:1;
+	} b;
+} daint_data_t;
+
+/**
+ * This union represents the bit fields in the Device IN Token Queue
+ * Read Registers.
+ * - Read the register into the <i>d32</i> member.
+ * - READ-ONLY Register
+ */
+typedef union dtknq1_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** In Token Queue Write Pointer */
+		unsigned intknwptr:5;
+		/** Reserved */
+		unsigned reserved05_06:2;
+		/** write pointer has wrapped. */
+		unsigned wrap_bit:1;
+		/** EP Numbers of IN Tokens 0 ... 4 */
+		unsigned epnums0_5:24;
+	} b;
+} dtknq1_data_t;
+
+/**
+ * This union represents Threshold control Register
+ * - Read and write the register into the <i>d32</i> member.
+ * - READ-WRITABLE Register
+ */
+typedef union dthrctl_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** non ISO Tx Thr. Enable */
+		unsigned non_iso_thr_en:1;
+		/** ISO Tx Thr. Enable */
+		unsigned iso_thr_en:1;
+		/** Tx Thr. Length */
+		unsigned tx_thr_len:9;
+		/** AHB Threshold ratio */
+		unsigned ahb_thr_ratio:2;
+		/** Reserved */
+		unsigned reserved13_15:3;
+		/** Rx Thr. Enable */
+		unsigned rx_thr_en:1;
+		/** Rx Thr. Length */
+		unsigned rx_thr_len:9;
+		unsigned reserved26:1;
+		/** Arbiter Parking Enable*/
+		unsigned arbprken:1;
+		/** Reserved */
+		unsigned reserved28_31:4;
+	} b;
+} dthrctl_data_t;
+
+/**
+ * Device Logical IN Endpoint-Specific Registers. <i>Offsets
+ * 900h-AFCh</i>
+ *
+ * There will be one set of endpoint registers per logical endpoint
+ * implemented.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_in_ep_regs {
+	/** Device IN Endpoint Control Register. <i>Offset:900h +
+	 * (ep_num * 20h) + 00h</i> */
+	volatile uint32_t diepctl;
+	/** Reserved. <i>Offset:900h + (ep_num * 20h) + 04h</i> */
+	uint32_t reserved04;
+	/** Device IN Endpoint Interrupt Register. <i>Offset:900h +
+	 * (ep_num * 20h) + 08h</i> */
+	volatile uint32_t diepint;
+	/** Reserved. <i>Offset:900h + (ep_num * 20h) + 0Ch</i> */
+	uint32_t reserved0C;
+	/** Device IN Endpoint Transfer Size
+	 * Register. <i>Offset:900h + (ep_num * 20h) + 10h</i> */
+	volatile uint32_t dieptsiz;
+	/** Device IN Endpoint DMA Address Register. <i>Offset:900h +
+	 * (ep_num * 20h) + 14h</i> */
+	volatile uint32_t diepdma;
+	/** Device IN Endpoint Transmit FIFO Status Register. <i>Offset:900h +
+	 * (ep_num * 20h) + 18h</i> */
+	volatile uint32_t dtxfsts;
+	/** Device IN Endpoint DMA Buffer Register. <i>Offset:900h +
+	 * (ep_num * 20h) + 1Ch</i> */
+	volatile uint32_t diepdmab;
+} dwc_otg_dev_in_ep_regs_t;
+
+/**
+ * Device Logical OUT Endpoint-Specific Registers. <i>Offsets:
+ * B00h-CFCh</i>
+ *
+ * There will be one set of endpoint registers per logical endpoint
+ * implemented.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_out_ep_regs {
+	/** Device OUT Endpoint Control Register. <i>Offset:B00h +
+	 * (ep_num * 20h) + 00h</i> */
+	volatile uint32_t doepctl;
+	/** Reserved. <i>Offset:B00h + (ep_num * 20h) + 04h</i> */
+	uint32_t reserved04;
+	/** Device OUT Endpoint Interrupt Register. <i>Offset:B00h +
+	 * (ep_num * 20h) + 08h</i> */
+	volatile uint32_t doepint;
+	/** Reserved. <i>Offset:B00h + (ep_num * 20h) + 0Ch</i> */
+	uint32_t reserved0C;
+	/** Device OUT Endpoint Transfer Size Register. <i>Offset:
+	 * B00h + (ep_num * 20h) + 10h</i> */
+	volatile uint32_t doeptsiz;
+	/** Device OUT Endpoint DMA Address Register. <i>Offset:B00h
+	 * + (ep_num * 20h) + 14h</i> */
+	volatile uint32_t doepdma;
+	/** Reserved. <i>Offset:B00h + 	 * (ep_num * 20h) + 18h</i> */
+	uint32_t unused;
+	/** Device OUT Endpoint DMA Buffer Register. <i>Offset:B00h
+	 * + (ep_num * 20h) + 1Ch</i> */
+	uint32_t doepdmab;
+} dwc_otg_dev_out_ep_regs_t;
+
+/**
+ * This union represents the bit fields in the Device EP Control
+ * Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union depctl_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Maximum Packet Size
+		 * IN/OUT EPn
+		 * IN/OUT EP0 - 2 bits
+		 *	 2'b00: 64 Bytes
+		 *	 2'b01: 32
+		 *	 2'b10: 16
+		 *	 2'b11: 8 */
+		unsigned mps:11;
+#define DWC_DEP0CTL_MPS_64	 0
+#define DWC_DEP0CTL_MPS_32	 1
+#define DWC_DEP0CTL_MPS_16	 2
+#define DWC_DEP0CTL_MPS_8	 3
+
+		/** Next Endpoint
+		 * IN EPn/IN EP0
+		 * OUT EPn/OUT EP0 - reserved */
+		unsigned nextep:4;
+
+		/** USB Active Endpoint */
+		unsigned usbactep:1;
+
+		/** Endpoint DPID (INTR/Bulk IN and OUT endpoints)
+		 * This field contains the PID of the packet going to
+		 * be received or transmitted on this endpoint. The
+		 * application should program the PID of the first
+		 * packet going to be received or transmitted on this
+		 * endpoint , after the endpoint is
+		 * activated. Application use the SetD1PID and
+		 * SetD0PID fields of this register to program either
+		 * D0 or D1 PID.
+		 *
+		 * The encoding for this field is
+		 *	 - 0: D0
+		 *	 - 1: D1
+		 */
+		unsigned dpid:1;
+
+		/** NAK Status */
+		unsigned naksts:1;
+
+		/** Endpoint Type
+		 *	2'b00: Control
+		 *	2'b01: Isochronous
+		 *	2'b10: Bulk
+		 *	2'b11: Interrupt */
+		unsigned eptype:2;
+
+		/** Snoop Mode
+		 * OUT EPn/OUT EP0
+		 * IN EPn/IN EP0 - reserved */
+		unsigned snp:1;
+
+		/** Stall Handshake */
+		unsigned stall:1;
+
+		/** Tx Fifo Number
+		 * IN EPn/IN EP0
+		 * OUT EPn/OUT EP0 - reserved */
+		unsigned txfnum:4;
+
+		/** Clear NAK */
+		unsigned cnak:1;
+		/** Set NAK */
+		unsigned snak:1;
+		/** Set DATA0 PID (INTR/Bulk IN and OUT endpoints)
+		 * Writing to this field sets the Endpoint DPID (DPID)
+		 * field in this register to DATA0. Set Even
+		 * (micro)frame (SetEvenFr) (ISO IN and OUT Endpoints)
+		 * Writing to this field sets the Even/Odd
+		 * (micro)frame (EO_FrNum) field to even (micro)
+		 * frame.
+		 */
+		unsigned setd0pid:1;
+		/** Set DATA1 PID (INTR/Bulk IN and OUT endpoints)
+		 * Writing to this field sets the Endpoint DPID (DPID)
+		 * field in this register to DATA1 Set Odd
+		 * (micro)frame (SetOddFr) (ISO IN and OUT Endpoints)
+		 * Writing to this field sets the Even/Odd
+		 * (micro)frame (EO_FrNum) field to odd (micro) frame.
+		 */
+		unsigned setd1pid:1;
+
+		/** Endpoint Disable */
+		unsigned epdis:1;
+		/** Endpoint Enable */
+		unsigned epena:1;
+	} b;
+} depctl_data_t;
+
+/**
+ * This union represents the bit fields in the Device EP Transfer
+ * Size Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union deptsiz_data {
+		/** raw register data */
+	uint32_t d32;
+		/** register bits */
+	struct {
+		/** Transfer size */
+		unsigned xfersize:19;
+/** Max packet count for EP (pow(2,10)-1) */
+#define MAX_PKT_CNT 1023
+		/** Packet Count */
+		unsigned pktcnt:10;
+		/** Multi Count - Periodic IN endpoints */
+		unsigned mc:2;
+		unsigned reserved:1;
+	} b;
+} deptsiz_data_t;
+
+/**
+ * This union represents the bit fields in the Device EP 0 Transfer
+ * Size Register.  Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union deptsiz0_data {
+		/** raw register data */
+	uint32_t d32;
+		/** register bits */
+	struct {
+		/** Transfer size */
+		unsigned xfersize:7;
+				/** Reserved */
+		unsigned reserved7_18:12;
+		/** Packet Count */
+		unsigned pktcnt:2;
+				/** Reserved */
+		unsigned reserved21_28:8;
+				/**Setup Packet Count (DOEPTSIZ0 Only) */
+		unsigned supcnt:2;
+		unsigned reserved31;
+	} b;
+} deptsiz0_data_t;
+
+/////////////////////////////////////////////////
+// DMA Descriptor Specific Structures
+//
+
+/** Buffer status definitions */
+
+#define BS_HOST_READY	0x0
+#define BS_DMA_BUSY		0x1
+#define BS_DMA_DONE		0x2
+#define BS_HOST_BUSY	0x3
+
+/** Receive/Transmit status definitions */
+
+#define RTS_SUCCESS		0x0
+#define RTS_BUFFLUSH	0x1
+#define RTS_RESERVED	0x2
+#define RTS_BUFERR		0x3
+
+/**
+ * This union represents the bit fields in the DMA Descriptor
+ * status quadlet. Read the quadlet into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it, <i>b_iso_out</i> and
+ * <i>b_iso_in</i> elements.
+ */
+typedef union dev_dma_desc_sts {
+		/** raw register data */
+	uint32_t d32;
+		/** quadlet bits */
+	struct {
+		/** Received number of bytes */
+		unsigned bytes:16;
+		/** NAK bit - only for OUT EPs */
+		unsigned nak:1;
+		unsigned reserved17_22:6;
+		/** Multiple Transfer - only for OUT EPs */
+		unsigned mtrf:1;
+		/** Setup Packet received - only for OUT EPs */
+		unsigned sr:1;
+		/** Interrupt On Complete */
+		unsigned ioc:1;
+		/** Short Packet */
+		unsigned sp:1;
+		/** Last */
+		unsigned l:1;
+		/** Receive Status */
+		unsigned sts:2;
+		/** Buffer Status */
+		unsigned bs:2;
+	} b;
+
+//#ifdef DWC_EN_ISOC
+		/** iso out quadlet bits */
+	struct {
+		/** Received number of bytes */
+		unsigned rxbytes:11;
+
+		unsigned reserved11:1;
+		/** Frame Number */
+		unsigned framenum:11;
+		/** Received ISO Data PID */
+		unsigned pid:2;
+		/** Interrupt On Complete */
+		unsigned ioc:1;
+		/** Short Packet */
+		unsigned sp:1;
+		/** Last */
+		unsigned l:1;
+		/** Receive Status */
+		unsigned rxsts:2;
+		/** Buffer Status */
+		unsigned bs:2;
+	} b_iso_out;
+
+		/** iso in quadlet bits */
+	struct {
+		/** Transmited number of bytes */
+		unsigned txbytes:12;
+		/** Frame Number */
+		unsigned framenum:11;
+		/** Transmited ISO Data PID */
+		unsigned pid:2;
+		/** Interrupt On Complete */
+		unsigned ioc:1;
+		/** Short Packet */
+		unsigned sp:1;
+		/** Last */
+		unsigned l:1;
+		/** Transmit Status */
+		unsigned txsts:2;
+		/** Buffer Status */
+		unsigned bs:2;
+	} b_iso_in;
+//#endif                                /* DWC_EN_ISOC */
+} dev_dma_desc_sts_t;
+
+/**
+ * DMA Descriptor structure
+ *
+ * DMA Descriptor structure contains two quadlets:
+ * Status quadlet and Data buffer pointer.
+ */
+typedef struct dwc_otg_dev_dma_desc {
+	/** DMA Descriptor status quadlet */
+	dev_dma_desc_sts_t status;
+	/** DMA Descriptor data buffer pointer */
+	uint32_t buf;
+} dwc_otg_dev_dma_desc_t;
+
+/**
+ * The dwc_otg_dev_if structure contains information needed to manage
+ * the DWC_otg controller acting in device mode. It represents the
+ * programming view of the device-specific aspects of the controller.
+ */
+typedef struct dwc_otg_dev_if {
+	/** Pointer to device Global registers.
+	 * Device Global Registers starting at offset 800h
+	 */
+	dwc_otg_device_global_regs_t *dev_global_regs;
+#define DWC_DEV_GLOBAL_REG_OFFSET 0x800
+
+	/**
+	 * Device Logical IN Endpoint-Specific Registers 900h-AFCh
+	 */
+	dwc_otg_dev_in_ep_regs_t *in_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_IN_EP_REG_OFFSET 0x900
+#define DWC_EP_REG_OFFSET 0x20
+
+	/** Device Logical OUT Endpoint-Specific Registers B00h-CFCh */
+	dwc_otg_dev_out_ep_regs_t *out_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_OUT_EP_REG_OFFSET 0xB00
+
+	/* Device configuration information */
+	uint8_t speed;				 /**< Device Speed	0: Unknown, 1: LS, 2:FS, 3: HS */
+	uint8_t num_in_eps;		 /**< Number # of Tx EP range: 0-15 exept ep0 */
+	uint8_t num_out_eps;		 /**< Number # of Rx EP range: 0-15 exept ep 0*/
+
+	/** Size of periodic FIFOs (Bytes) */
+	uint16_t perio_tx_fifo_size[MAX_PERIO_FIFOS];
+
+	/** Size of Tx FIFOs (Bytes) */
+	uint16_t tx_fifo_size[MAX_TX_FIFOS];
+
+	/** Thresholding enable flags and length varaiables **/
+	uint16_t rx_thr_en;
+	uint16_t iso_tx_thr_en;
+	uint16_t non_iso_tx_thr_en;
+
+	uint16_t rx_thr_length;
+	uint16_t tx_thr_length;
+
+	/**
+	 * Pointers to the DMA Descriptors for EP0 Control
+	 * transfers (virtual and physical)
+	 */
+
+	/** 2 descriptors for SETUP packets */
+	dwc_dma_t dma_setup_desc_addr[2];
+	dwc_otg_dev_dma_desc_t *setup_desc_addr[2];
+
+	/** Pointer to Descriptor with latest SETUP packet */
+	dwc_otg_dev_dma_desc_t *psetup;
+
+	/** Index of current SETUP handler descriptor */
+	uint32_t setup_desc_index;
+
+	/** Descriptor for Data In or Status In phases */
+	dwc_dma_t dma_in_desc_addr;
+	dwc_otg_dev_dma_desc_t *in_desc_addr;
+
+	/** Descriptor for Data Out or Status Out phases */
+	dwc_dma_t dma_out_desc_addr;
+	dwc_otg_dev_dma_desc_t *out_desc_addr;
+
+	/** Setup Packet Detected - if set clear NAK when queueing */
+	uint32_t spd;
+	/** Isoc ep pointer on which incomplete happens */
+	void *isoc_ep;
+
+} dwc_otg_dev_if_t;
+
+/////////////////////////////////////////////////
+// Host Mode Register Structures
+//
+/**
+ * The Host Global Registers structure defines the size and relative
+ * field offsets for the Host Mode Global Registers.  Host Global
+ * Registers offsets 400h-7FFh.
+*/
+typedef struct dwc_otg_host_global_regs {
+	/** Host Configuration Register.   <i>Offset: 400h</i> */
+	volatile uint32_t hcfg;
+	/** Host Frame Interval Register.	<i>Offset: 404h</i> */
+	volatile uint32_t hfir;
+	/** Host Frame Number / Frame Remaining Register. <i>Offset: 408h</i> */
+	volatile uint32_t hfnum;
+	/** Reserved.	<i>Offset: 40Ch</i> */
+	uint32_t reserved40C;
+	/** Host Periodic Transmit FIFO/ Queue Status Register. <i>Offset: 410h</i> */
+	volatile uint32_t hptxsts;
+	/** Host All Channels Interrupt Register. <i>Offset: 414h</i> */
+	volatile uint32_t haint;
+	/** Host All Channels Interrupt Mask Register. <i>Offset: 418h</i> */
+	volatile uint32_t haintmsk;
+	/** Host Frame List Base Address Register . <i>Offset: 41Ch</i> */
+	volatile uint32_t hflbaddr;
+} dwc_otg_host_global_regs_t;
+
+/**
+ * This union represents the bit fields in the Host Configuration Register.
+ * Read the register into the <i>d32</i> member then set/clear the bits using
+ * the <i>b</i>it elements. Write the <i>d32</i> member to the hcfg register.
+ */
+typedef union hcfg_data {
+	/** raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		/** FS/LS Phy Clock Select */
+		unsigned fslspclksel:2;
+#define DWC_HCFG_30_60_MHZ 0
+#define DWC_HCFG_48_MHZ	   1
+#define DWC_HCFG_6_MHZ	   2
+
+		/** FS/LS Only Support */
+		unsigned fslssupp:1;
+		unsigned reserved3_6:4;
+		/** Enable 32-KHz Suspend Mode */
+		unsigned ena32khzs:1;
+		/** Resume Validation Periiod */
+		unsigned resvalid:8;
+		unsigned reserved16_22:7;
+		/** Enable Scatter/gather DMA in Host mode */
+		unsigned descdma:1;
+		/** Frame List Entries */
+		unsigned frlisten:2;
+		/** Enable Periodic Scheduling */
+		unsigned perschedena:1;
+		unsigned reserved27_30:4;
+		unsigned modechtimen:1;
+	} b;
+} hcfg_data_t;
+
+/**
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.
+ */
+typedef union hfir_data {
+	/** raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		unsigned frint:16;
+		unsigned hfirrldctrl:1;
+		unsigned reserved:15;
+	} b;
+} hfir_data_t;
+
+/**
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.
+ */
+typedef union hfnum_data {
+	/** raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		unsigned frnum:16;
+#define DWC_HFNUM_MAX_FRNUM 0x3FFF
+		unsigned frrem:16;
+	} b;
+} hfnum_data_t;
+
+typedef union hptxsts_data {
+	/** raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		unsigned ptxfspcavail:16;
+		unsigned ptxqspcavail:8;
+		/** Top of the Periodic Transmit Request Queue
+		 *	- bit 24 - Terminate (last entry for the selected channel)
+		 *	- bits 26:25 - Token Type
+		 *	  - 2'b00 - Zero length
+		 *	  - 2'b01 - Ping
+		 *	  - 2'b10 - Disable
+		 *	- bits 30:27 - Channel Number
+		 *	- bit 31 - Odd/even microframe
+		 */
+		unsigned ptxqtop_terminate:1;
+		unsigned ptxqtop_token:2;
+		unsigned ptxqtop_chnum:4;
+		unsigned ptxqtop_odd:1;
+	} b;
+} hptxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Host Port Control and Status
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hprt0 register.
+ */
+typedef union hprt0_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned prtconnsts:1;
+		unsigned prtconndet:1;
+		unsigned prtena:1;
+		unsigned prtenchng:1;
+		unsigned prtovrcurract:1;
+		unsigned prtovrcurrchng:1;
+		unsigned prtres:1;
+		unsigned prtsusp:1;
+		unsigned prtrst:1;
+		unsigned reserved9:1;
+		unsigned prtlnsts:2;
+		unsigned prtpwr:1;
+		unsigned prttstctl:4;
+		unsigned prtspd:2;
+#define DWC_HPRT0_PRTSPD_HIGH_SPEED 0
+#define DWC_HPRT0_PRTSPD_FULL_SPEED 1
+#define DWC_HPRT0_PRTSPD_LOW_SPEED	2
+		unsigned reserved19_31:13;
+	} b;
+} hprt0_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register.
+ */
+typedef union haint_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned ch0:1;
+		unsigned ch1:1;
+		unsigned ch2:1;
+		unsigned ch3:1;
+		unsigned ch4:1;
+		unsigned ch5:1;
+		unsigned ch6:1;
+		unsigned ch7:1;
+		unsigned ch8:1;
+		unsigned ch9:1;
+		unsigned ch10:1;
+		unsigned ch11:1;
+		unsigned ch12:1;
+		unsigned ch13:1;
+		unsigned ch14:1;
+		unsigned ch15:1;
+		unsigned reserved:16;
+	} b;
+
+	struct {
+		unsigned chint:16;
+		unsigned reserved:16;
+	} b2;
+} haint_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register.
+ */
+typedef union haintmsk_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned ch0:1;
+		unsigned ch1:1;
+		unsigned ch2:1;
+		unsigned ch3:1;
+		unsigned ch4:1;
+		unsigned ch5:1;
+		unsigned ch6:1;
+		unsigned ch7:1;
+		unsigned ch8:1;
+		unsigned ch9:1;
+		unsigned ch10:1;
+		unsigned ch11:1;
+		unsigned ch12:1;
+		unsigned ch13:1;
+		unsigned ch14:1;
+		unsigned ch15:1;
+		unsigned reserved:16;
+	} b;
+
+	struct {
+		unsigned chint:16;
+		unsigned reserved:16;
+	} b2;
+} haintmsk_data_t;
+
+/**
+ * Host Channel Specific Registers. <i>500h-5FCh</i>
+ */
+typedef struct dwc_otg_hc_regs {
+	/** Host Channel 0 Characteristic Register. <i>Offset: 500h + (chan_num * 20h) + 00h</i> */
+	volatile uint32_t hcchar;
+	/** Host Channel 0 Split Control Register. <i>Offset: 500h + (chan_num * 20h) + 04h</i> */
+	volatile uint32_t hcsplt;
+	/** Host Channel 0 Interrupt Register. <i>Offset: 500h + (chan_num * 20h) + 08h</i> */
+	volatile uint32_t hcint;
+	/** Host Channel 0 Interrupt Mask Register. <i>Offset: 500h + (chan_num * 20h) + 0Ch</i> */
+	volatile uint32_t hcintmsk;
+	/** Host Channel 0 Transfer Size Register. <i>Offset: 500h + (chan_num * 20h) + 10h</i> */
+	volatile uint32_t hctsiz;
+	/** Host Channel 0 DMA Address Register. <i>Offset: 500h + (chan_num * 20h) + 14h</i> */
+	volatile uint32_t hcdma;
+	volatile uint32_t reserved;
+	/** Host Channel 0 DMA Buffer Address Register. <i>Offset: 500h + (chan_num * 20h) + 1Ch</i> */
+	volatile uint32_t hcdmab;
+} dwc_otg_hc_regs_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Characteristics
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcchar register.
+ */
+typedef union hcchar_data {
+	/** raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		/** Maximum packet size in bytes */
+		unsigned mps:11;
+
+		/** Endpoint number */
+		unsigned epnum:4;
+
+		/** 0: OUT, 1: IN */
+		unsigned epdir:1;
+
+		unsigned reserved:1;
+
+		/** 0: Full/high speed device, 1: Low speed device */
+		unsigned lspddev:1;
+
+		/** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
+		unsigned eptype:2;
+
+		/** Packets per frame for periodic transfers. 0 is reserved. */
+		unsigned multicnt:2;
+
+		/** Device address */
+		unsigned devaddr:7;
+
+		/**
+		 * Frame to transmit periodic transaction.
+		 * 0: even, 1: odd
+		 */
+		unsigned oddfrm:1;
+
+		/** Channel disable */
+		unsigned chdis:1;
+
+		/** Channel enable */
+		unsigned chen:1;
+	} b;
+} hcchar_data_t;
+
+typedef union hcsplt_data {
+	/** raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		/** Port Address */
+		unsigned prtaddr:7;
+
+		/** Hub Address */
+		unsigned hubaddr:7;
+
+		/** Transaction Position */
+		unsigned xactpos:2;
+#define DWC_HCSPLIT_XACTPOS_MID 0
+#define DWC_HCSPLIT_XACTPOS_END 1
+#define DWC_HCSPLIT_XACTPOS_BEGIN 2
+#define DWC_HCSPLIT_XACTPOS_ALL 3
+
+		/** Do Complete Split */
+		unsigned compsplt:1;
+
+		/** Reserved */
+		unsigned reserved:14;
+
+		/** Split Enble */
+		unsigned spltena:1;
+	} b;
+} hcsplt_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register.
+ */
+typedef union hcint_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** Transfer Complete */
+		unsigned xfercomp:1;
+		/** Channel Halted */
+		unsigned chhltd:1;
+		/** AHB Error */
+		unsigned ahberr:1;
+		/** STALL Response Received */
+		unsigned stall:1;
+		/** NAK Response Received */
+		unsigned nak:1;
+		/** ACK Response Received */
+		unsigned ack:1;
+		/** NYET Response Received */
+		unsigned nyet:1;
+		/** Transaction Err */
+		unsigned xacterr:1;
+		/** Babble Error */
+		unsigned bblerr:1;
+		/** Frame Overrun */
+		unsigned frmovrun:1;
+		/** Data Toggle Error */
+		unsigned datatglerr:1;
+		/** Buffer Not Available (only for DDMA mode) */
+		unsigned bna:1;
+		/** Exessive transaction error (only for DDMA mode) */
+		unsigned xcs_xact:1;
+		/** Frame List Rollover interrupt */
+		unsigned frm_list_roll:1;
+		/** Reserved */
+		unsigned reserved14_31:18;
+	} b;
+} hcint_data_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Interrupt Mask
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcintmsk register.
+ */
+typedef union hcintmsk_data {
+	/** raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		unsigned xfercompl:1;
+		unsigned chhltd:1;
+		unsigned ahberr:1;
+		unsigned stall:1;
+		unsigned nak:1;
+		unsigned ack:1;
+		unsigned nyet:1;
+		unsigned xacterr:1;
+		unsigned bblerr:1;
+		unsigned frmovrun:1;
+		unsigned datatglerr:1;
+		unsigned bna:1;
+		unsigned xcs_xact:1;
+		unsigned frm_list_roll:1;
+		unsigned reserved14_31:18;
+	} b;
+} hcintmsk_data_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Transfer Size
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcchar register.
+ */
+
+typedef union hctsiz_data {
+	/** raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		/** Total transfer size in bytes */
+		unsigned xfersize:19;
+
+		/** Data packets to transfer */
+		unsigned pktcnt:10;
+
+		/**
+		 * Packet ID for next data packet
+		 * 0: DATA0
+		 * 1: DATA2
+		 * 2: DATA1
+		 * 3: MDATA (non-Control), SETUP (Control)
+		 */
+		unsigned pid:2;
+#define DWC_HCTSIZ_DATA0 0
+#define DWC_HCTSIZ_DATA1 2
+#define DWC_HCTSIZ_DATA2 1
+#define DWC_HCTSIZ_MDATA 3
+#define DWC_HCTSIZ_SETUP 3
+
+		/** Do PING protocol when 1 */
+		unsigned dopng:1;
+	} b;
+
+	/** register bits */
+	struct {
+		/** Scheduling information */
+		unsigned schinfo:8;
+
+		/** Number of transfer descriptors.
+		 * Max value:
+		 * 64 in general,
+		 * 256 only for HS isochronous endpoint.
+		 */
+		unsigned ntd:8;
+
+		/** Data packets to transfer */
+		unsigned reserved16_28:13;
+
+		/**
+		 * Packet ID for next data packet
+		 * 0: DATA0
+		 * 1: DATA2
+		 * 2: DATA1
+		 * 3: MDATA (non-Control)
+		 */
+		unsigned pid:2;
+
+		/** Do PING protocol when 1 */
+		unsigned dopng:1;
+	} b_ddma;
+} hctsiz_data_t;
+
+/**
+ * This union represents the bit fields in the Host DMA Address
+ * Register used in Descriptor DMA mode.
+ */
+typedef union hcdma_data {
+	/** raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		unsigned reserved0_2:3;
+		/** Current Transfer Descriptor. Not used for ISOC */
+		unsigned ctd:8;
+		/** Start Address of Descriptor List */
+		unsigned dma_addr:21;
+	} b;
+} hcdma_data_t;
+
+/**
+ * This union represents the bit fields in the DMA Descriptor
+ * status quadlet for host mode. Read the quadlet into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union host_dma_desc_sts {
+	/** raw register data */
+	uint32_t d32;
+	/** quadlet bits */
+
+	/* for non-isochronous  */
+	struct {
+		/** Number of bytes */
+		unsigned n_bytes:17;
+		/** QTD offset to jump when Short Packet received - only for IN EPs */
+		unsigned qtd_offset:6;
+		/**
+		 * Set to request the core to jump to alternate QTD if
+		 * Short Packet received - only for IN EPs
+		 */
+		unsigned a_qtd:1;
+		 /**
+		  * Setup Packet bit. When set indicates that buffer contains
+		  * setup packet.
+		  */
+		unsigned sup:1;
+		/** Interrupt On Complete */
+		unsigned ioc:1;
+		/** End of List */
+		unsigned eol:1;
+		unsigned reserved27:1;
+		/** Rx/Tx Status */
+		unsigned sts:2;
+#define DMA_DESC_STS_PKTERR	1
+		unsigned reserved30:1;
+		/** Active Bit */
+		unsigned a:1;
+	} b;
+	/* for isochronous */
+	struct {
+		/** Number of bytes */
+		unsigned n_bytes:12;
+		unsigned reserved12_24:13;
+		/** Interrupt On Complete */
+		unsigned ioc:1;
+		unsigned reserved26_27:2;
+		/** Rx/Tx Status */
+		unsigned sts:2;
+		unsigned reserved30:1;
+		/** Active Bit */
+		unsigned a:1;
+	} b_isoc;
+} host_dma_desc_sts_t;
+
+#define	MAX_DMA_DESC_SIZE		131071
+#define MAX_DMA_DESC_NUM_GENERIC	64
+#define MAX_DMA_DESC_NUM_HS_ISOC	256
+#define MAX_FRLIST_EN_NUM		64
+/**
+ * Host-mode DMA Descriptor structure
+ *
+ * DMA Descriptor structure contains two quadlets:
+ * Status quadlet and Data buffer pointer.
+ */
+typedef struct dwc_otg_host_dma_desc {
+	/** DMA Descriptor status quadlet */
+	host_dma_desc_sts_t status;
+	/** DMA Descriptor data buffer pointer */
+	uint32_t buf;
+} dwc_otg_host_dma_desc_t;
+
+/** OTG Host Interface Structure.
+ *
+ * The OTG Host Interface Structure structure contains information
+ * needed to manage the DWC_otg controller acting in host mode. It
+ * represents the programming view of the host-specific aspects of the
+ * controller.
+ */
+typedef struct dwc_otg_host_if {
+	/** Host Global Registers starting at offset 400h.*/
+	dwc_otg_host_global_regs_t *host_global_regs;
+#define DWC_OTG_HOST_GLOBAL_REG_OFFSET 0x400
+
+	/** Host Port 0 Control and Status Register */
+	volatile uint32_t *hprt0;
+#define DWC_OTG_HOST_PORT_REGS_OFFSET 0x440
+
+	/** Host Channel Specific Registers at offsets 500h-5FCh. */
+	dwc_otg_hc_regs_t *hc_regs[MAX_EPS_CHANNELS];
+#define DWC_OTG_HOST_CHAN_REGS_OFFSET 0x500
+#define DWC_OTG_CHAN_REGS_OFFSET 0x20
+
+	/* Host configuration information */
+	/** Number of Host Channels (range: 1-16) */
+	uint8_t num_host_channels;
+	/** Periodic EPs supported (0: no, 1: yes) */
+	uint8_t perio_eps_supported;
+	/** Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */
+	uint16_t perio_tx_fifo_size;
+
+} dwc_otg_host_if_t;
+
+/**
+ * This union represents the bit fields in the Power and Clock Gating Control
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union pcgcctl_data {
+	/** raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		/** Stop Pclk */
+		unsigned stoppclk:1;
+		/** Gate Hclk */
+		unsigned gatehclk:1;
+		/** Power Clamp */
+		unsigned pwrclmp:1;
+		/** Reset Power Down Modules */
+		unsigned rstpdwnmodule:1;
+		/** Reserved */
+		unsigned reserved:1;
+		/** Enable Sleep Clock Gating (Enbl_L1Gating) */
+		unsigned enbl_sleep_gating:1;
+		/** PHY In Sleep (PhySleep) */
+		unsigned phy_in_sleep:1;
+		/** Deep Sleep*/
+		unsigned deep_sleep:1;
+		unsigned resetaftsusp:1;
+		unsigned restoremode:1;
+		unsigned enbl_extnd_hiber:1;
+		unsigned extnd_hiber_pwrclmp:1;
+		unsigned extnd_hiber_switch:1;
+		unsigned ess_reg_restored:1;
+		unsigned prt_clk_sel:2;
+		unsigned port_power:1;
+		unsigned max_xcvrselect:2;
+		unsigned max_termsel:1;
+		unsigned mac_dev_addr:7;
+		unsigned p2hd_dev_enum_spd:2;
+		unsigned p2hd_prt_spd:2;
+		unsigned if_dev_mode:1;
+	} b;
+} pcgcctl_data_t;
+
+/**
+ * This union represents the bit fields in the Global Data FIFO Software
+ * Configuration Register. Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union gdfifocfg_data {
+	/* raw register data */
+	uint32_t d32;
+	/** register bits */
+	struct {
+		/** OTG Data FIFO depth */
+		unsigned gdfifocfg:16;
+		/** Start address of EP info controller */
+		unsigned epinfobase:16;
+	} b;
+} gdfifocfg_data_t;
+
+/**
+ * This union represents the bit fields in the Global Power Down Register
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gpwrdn_data {
+	/* raw register data */
+	uint32_t d32;
+
+	/** register bits */
+	struct {
+		/** PMU Interrupt Select */
+		unsigned pmuintsel:1;
+		/** PMU Active */
+		unsigned pmuactv:1;
+		/** Restore */
+		unsigned restore:1;
+		/** Power Down Clamp */
+		unsigned pwrdnclmp:1;
+		/** Power Down Reset */
+		unsigned pwrdnrstn:1;
+		/** Power Down Switch */
+		unsigned pwrdnswtch:1;
+		/** Disable VBUS */
+		unsigned dis_vbus:1;
+		/** Line State Change */
+		unsigned lnstschng:1;
+		/** Line state change mask */
+		unsigned lnstchng_msk:1;
+		/** Reset Detected */
+		unsigned rst_det:1;
+		/** Reset Detect mask */
+		unsigned rst_det_msk:1;
+		/** Disconnect Detected */
+		unsigned disconn_det:1;
+		/** Disconnect Detect mask */
+		unsigned disconn_det_msk:1;
+		/** Connect Detected*/
+		unsigned connect_det:1;
+		/** Connect Detected Mask*/
+		unsigned connect_det_msk:1;
+		/** SRP Detected */
+		unsigned srp_det:1;
+		/** SRP Detect mask */
+		unsigned srp_det_msk:1;
+		/** Status Change Interrupt */
+		unsigned sts_chngint:1;
+		/** Status Change Interrupt Mask */
+		unsigned sts_chngint_msk:1;
+		/** Line State */
+		unsigned linestate:2;
+		/** Indicates current mode(status of IDDIG signal) */
+		unsigned idsts:1;
+		/** B Session Valid signal status*/
+		unsigned bsessvld:1;
+		/** ADP Event Detected */
+		unsigned adp_int:1;
+		/** Multi Valued ID pin */
+		unsigned mult_val_id_bc:5;
+		/** Reserved 24_31 */
+		unsigned reserved29_31:3;
+	} b;
+} gpwrdn_data_t;
+
+#endif
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/Makefile linux-rpi/drivers/usb/host/dwc_otg/Makefile
--- linux-3.18.10/drivers/usb/host/dwc_otg/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/Makefile	2015-03-26 11:46:54.308238199 +0100
@@ -0,0 +1,82 @@
+#
+# Makefile for DWC_otg Highspeed USB controller driver
+#
+
+ifneq ($(KERNELRELEASE),)
+
+# Use the BUS_INTERFACE variable to compile the software for either
+# PCI(PCI_INTERFACE) or LM(LM_INTERFACE) bus.
+ifeq ($(BUS_INTERFACE),)
+#	BUS_INTERFACE = -DPCI_INTERFACE
+#	BUS_INTERFACE = -DLM_INTERFACE
+        BUS_INTERFACE = -DPLATFORM_INTERFACE
+endif
+
+#ccflags-y	+= -DDEBUG
+#ccflags-y	+= -DDWC_OTG_DEBUGLEV=1 # reduce common debug msgs
+
+# Use one of the following flags to compile the software in host-only or
+# device-only mode.
+#ccflags-y        += -DDWC_HOST_ONLY
+#ccflags-y        += -DDWC_DEVICE_ONLY
+
+ccflags-y	+= -Dlinux -DDWC_HS_ELECT_TST
+#ccflags-y	+= -DDWC_EN_ISOC
+ccflags-y   	+= -I$(obj)/../dwc_common_port
+#ccflags-y   	+= -I$(PORTLIB)
+ccflags-y   	+= -DDWC_LINUX
+ccflags-y   	+= $(CFI)
+ccflags-y	+= $(BUS_INTERFACE)
+#ccflags-y	+= -DDWC_DEV_SRPCAP
+
+obj-$(CONFIG_USB_DWCOTG) += dwc_otg.o
+
+dwc_otg-objs	:= dwc_otg_driver.o dwc_otg_attr.o
+dwc_otg-objs	+= dwc_otg_cil.o dwc_otg_cil_intr.o
+dwc_otg-objs	+= dwc_otg_pcd_linux.o dwc_otg_pcd.o dwc_otg_pcd_intr.o
+dwc_otg-objs	+= dwc_otg_hcd.o dwc_otg_hcd_linux.o dwc_otg_hcd_intr.o dwc_otg_hcd_queue.o dwc_otg_hcd_ddma.o
+dwc_otg-objs	+= dwc_otg_adp.o
+dwc_otg-objs	+= dwc_otg_fiq_fsm.o
+dwc_otg-objs	+= dwc_otg_fiq_stub.o
+ifneq ($(CFI),)
+dwc_otg-objs	+= dwc_otg_cfi.o
+endif
+
+kernrelwd := $(subst ., ,$(KERNELRELEASE))
+kernrel3 := $(word 1,$(kernrelwd)).$(word 2,$(kernrelwd)).$(word 3,$(kernrelwd))
+
+ifneq ($(kernrel3),2.6.20)
+ccflags-y += $(CPPFLAGS)
+endif
+
+else
+
+PWD		:= $(shell pwd)
+PORTLIB		:= $(PWD)/../dwc_common_port
+
+# Command paths
+CTAGS		:= $(CTAGS)
+DOXYGEN		:= $(DOXYGEN)
+
+default: portlib
+	$(MAKE) -C$(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
+
+install: default
+	$(MAKE) -C$(KDIR) M=$(PORTLIB) modules_install
+	$(MAKE) -C$(KDIR) M=$(PWD) modules_install
+
+portlib:
+	$(MAKE) -C$(KDIR) M=$(PORTLIB) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
+	cp $(PORTLIB)/Module.symvers $(PWD)/
+
+docs:	$(wildcard *.[hc]) doc/doxygen.cfg
+	$(DOXYGEN) doc/doxygen.cfg
+
+tags:	$(wildcard *.[hc])
+	$(CTAGS) -e $(wildcard *.[hc]) $(wildcard linux/*.[hc]) $(wildcard $(KDIR)/include/linux/usb*.h)
+
+
+clean:
+	rm -rf   *.o *.ko .*cmd *.mod.c .tmp_versions Module.symvers
+
+endif
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/test/dwc_otg_test.pm linux-rpi/drivers/usb/host/dwc_otg/test/dwc_otg_test.pm
--- linux-3.18.10/drivers/usb/host/dwc_otg/test/dwc_otg_test.pm	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/test/dwc_otg_test.pm	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,337 @@
+package dwc_otg_test;
+
+use strict;
+use Exporter ();
+
+use vars qw(@ISA @EXPORT
+$sysfsdir $paramdir $errors $params
+);
+
+@ISA = qw(Exporter);
+
+#
+# Globals
+#
+$sysfsdir = "/sys/devices/lm0";
+$paramdir = "/sys/module/dwc_otg";
+$errors = 0;
+
+$params = [
+	   {
+	    NAME => "otg_cap",
+	    DEFAULT => 0,
+	    ENUM => [],
+	    LOW => 0,
+	    HIGH => 2
+	   },
+	   {
+	    NAME => "dma_enable",
+	    DEFAULT => 0,
+	    ENUM => [],
+	    LOW => 0,
+	    HIGH => 1
+	   },
+	   {
+	    NAME => "dma_burst_size",
+	    DEFAULT => 32,
+	    ENUM => [1, 4, 8, 16, 32, 64, 128, 256],
+	    LOW => 1,
+	    HIGH => 256
+	   },
+	   {
+	    NAME => "host_speed",
+	    DEFAULT => 0,
+	    ENUM => [],
+	    LOW => 0,
+	    HIGH => 1
+	   },
+	   {
+	    NAME => "host_support_fs_ls_low_power",
+	    DEFAULT => 0,
+	    ENUM => [],
+	    LOW => 0,
+	    HIGH => 1
+	   },
+	   {
+	    NAME => "host_ls_low_power_phy_clk",
+	    DEFAULT => 0,
+	    ENUM => [],
+	    LOW => 0,
+	    HIGH => 1
+	   },
+	   {
+	    NAME => "dev_speed",
+	    DEFAULT => 0,
+	    ENUM => [],
+	    LOW => 0,
+	    HIGH => 1
+	   },
+	   {
+	    NAME => "enable_dynamic_fifo",
+	    DEFAULT => 1,
+	    ENUM => [],
+	    LOW => 0,
+	    HIGH => 1
+	   },
+	   {
+	    NAME => "data_fifo_size",
+	    DEFAULT => 8192,
+	    ENUM => [],
+	    LOW => 32,
+	    HIGH => 32768
+	   },
+	   {
+	    NAME => "dev_rx_fifo_size",
+	    DEFAULT => 1064,
+	    ENUM => [],
+	    LOW => 16,
+	    HIGH => 32768
+	   },
+	   {
+	    NAME => "dev_nperio_tx_fifo_size",
+	    DEFAULT => 1024,
+	    ENUM => [],
+	    LOW => 16,
+	    HIGH => 32768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_1",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_2",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_3",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_4",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_5",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_6",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_7",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_8",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_9",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_10",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_11",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_12",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_13",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_14",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "dev_perio_tx_fifo_size_15",
+	    DEFAULT => 256,
+	    ENUM => [],
+	    LOW => 4,
+	    HIGH => 768
+	   },
+	   {
+	    NAME => "host_rx_fifo_size",
+	    DEFAULT => 1024,
+	    ENUM => [],
+	    LOW => 16,
+	    HIGH => 32768
+	   },
+	   {
+	    NAME => "host_nperio_tx_fifo_size",
+	    DEFAULT => 1024,
+	    ENUM => [],
+	    LOW => 16,
+	    HIGH => 32768
+	   },
+	   {
+	    NAME => "host_perio_tx_fifo_size",
+	    DEFAULT => 1024,
+	    ENUM => [],
+	    LOW => 16,
+	    HIGH => 32768
+	   },
+	   {
+	    NAME => "max_transfer_size",
+	    DEFAULT => 65535,
+	    ENUM => [],
+	    LOW => 2047,
+	    HIGH => 65535
+	   },
+	   {
+	    NAME => "max_packet_count",
+	    DEFAULT => 511,
+	    ENUM => [],
+	    LOW => 15,
+	    HIGH => 511
+	   },
+	   {
+	    NAME => "host_channels",
+	    DEFAULT => 12,
+	    ENUM => [],
+	    LOW => 1,
+	    HIGH => 16
+	   },
+	   {
+	    NAME => "dev_endpoints",
+	    DEFAULT => 6,
+	    ENUM => [],
+	    LOW => 1,
+	    HIGH => 15
+	   },
+	   {
+	    NAME => "phy_type",
+	    DEFAULT => 1,
+	    ENUM => [],
+	    LOW => 0,
+	    HIGH => 2
+	   },
+	   {
+	    NAME => "phy_utmi_width",
+	    DEFAULT => 16,
+	    ENUM => [8, 16],
+	    LOW => 8,
+	    HIGH => 16
+	   },
+	   {
+	    NAME => "phy_ulpi_ddr",
+	    DEFAULT => 0,
+	    ENUM => [],
+	    LOW => 0,
+	    HIGH => 1
+	   },
+	  ];
+
+
+#
+#
+sub check_arch {
+  $_ = `uname -m`;
+  chomp;
+  unless (m/armv4tl/) {
+    warn "# \n# Can't execute on $_.  Run on integrator platform.\n# \n";
+    return 0;
+  }
+  return 1;
+}
+
+#
+#
+sub load_module {
+  my $params = shift;
+  print "\nRemoving Module\n";
+  system "rmmod dwc_otg";
+  print "Loading Module\n";
+  if ($params ne "") {
+    print "Module Parameters: $params\n";
+  }
+  if (system("modprobe dwc_otg $params")) {
+    warn "Unable to load module\n";
+    return 0;
+  }
+  return 1;
+}
+
+#
+#
+sub test_status {
+  my $arg = shift;
+
+  print "\n";
+
+  if (defined $arg) {
+    warn "WARNING: $arg\n";
+  }
+
+  if ($errors > 0) {
+    warn "TEST FAILED with $errors errors\n";
+    return 0;
+  } else {
+    print "TEST PASSED\n";
+    return 0 if (defined $arg);
+  }
+  return 1;
+}
+
+#
+#
+@EXPORT = qw(
+$sysfsdir
+$paramdir
+$params
+$errors
+check_arch
+load_module
+test_status
+);
+
+1;
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/test/Makefile linux-rpi/drivers/usb/host/dwc_otg/test/Makefile
--- linux-3.18.10/drivers/usb/host/dwc_otg/test/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/test/Makefile	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,16 @@
+
+PERL=/usr/bin/perl
+PL_TESTS=test_sysfs.pl test_mod_param.pl
+
+.PHONY : test
+test : perl_tests
+
+perl_tests :
+	@echo
+	@echo Running perl tests
+	@for test in $(PL_TESTS); do \
+	  if $(PERL) ./$$test ; then \
+	    echo "=======> $$test, PASSED" ; \
+	  else echo "=======> $$test, FAILED" ; \
+	  fi \
+	done
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/test/test_mod_param.pl linux-rpi/drivers/usb/host/dwc_otg/test/test_mod_param.pl
--- linux-3.18.10/drivers/usb/host/dwc_otg/test/test_mod_param.pl	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/test/test_mod_param.pl	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,133 @@
+#!/usr/bin/perl -w
+#
+# Run this program on the integrator.
+#
+# - Tests module parameter default values.
+# - Tests setting of valid module parameter values via modprobe.
+# - Tests invalid module parameter values.
+# -----------------------------------------------------------------------------
+use strict;
+use dwc_otg_test;
+
+check_arch() or die;
+
+#
+#
+sub test {
+  my ($param,$expected) = @_;
+  my $value = get($param);
+
+  if ($value == $expected) {
+    print "$param = $value, okay\n";
+  }
+
+  else {
+    warn "ERROR: value of $param != $expected, $value\n";
+    $errors ++;
+  }
+}
+
+#
+#
+sub get {
+  my $param = shift;
+  my $tmp = `cat $paramdir/$param`;
+  chomp $tmp;
+  return $tmp;
+}
+
+#
+#
+sub test_main {
+
+  print "\nTesting Module Parameters\n";
+
+  load_module("") or die;
+
+  # Test initial values
+  print "\nTesting Default Values\n";
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{DEFAULT});
+  }
+
+  # Test low value
+  print "\nTesting Low Value\n";
+  my $cmd_params = "";
+  foreach (@{$params}) {
+    $cmd_params = $cmd_params . "$_->{NAME}=$_->{LOW} ";
+  }
+  load_module($cmd_params) or die;
+
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{LOW});
+  }
+
+  # Test high value
+  print "\nTesting High Value\n";
+  $cmd_params = "";
+  foreach (@{$params}) {
+    $cmd_params = $cmd_params . "$_->{NAME}=$_->{HIGH} ";
+  }
+  load_module($cmd_params) or die;
+
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{HIGH});
+  }
+
+  # Test Enum
+  print "\nTesting Enumerated\n";
+  foreach (@{$params}) {
+    if (defined $_->{ENUM}) {
+      my $value;
+      foreach $value (@{$_->{ENUM}}) {
+	$cmd_params = "$_->{NAME}=$value";
+	load_module($cmd_params) or die;
+	test ($_->{NAME}, $value);
+      }
+    }
+  }
+
+  # Test Invalid Values
+  print "\nTesting Invalid Values\n";
+  $cmd_params = "";
+  foreach (@{$params}) {
+    $cmd_params = $cmd_params . sprintf "$_->{NAME}=%d ", $_->{LOW}-1;
+  }
+  load_module($cmd_params) or die;
+
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{DEFAULT});
+  }
+
+  $cmd_params = "";
+  foreach (@{$params}) {
+    $cmd_params = $cmd_params . sprintf "$_->{NAME}=%d ", $_->{HIGH}+1;
+  }
+  load_module($cmd_params) or die;
+
+  foreach (@{$params}) {
+    test ($_->{NAME}, $_->{DEFAULT});
+  }
+
+  print "\nTesting Enumerated\n";
+  foreach (@{$params}) {
+    if (defined $_->{ENUM}) {
+      my $value;
+      foreach $value (@{$_->{ENUM}}) {
+	$value = $value + 1;
+	$cmd_params = "$_->{NAME}=$value";
+	load_module($cmd_params) or die;
+	test ($_->{NAME}, $_->{DEFAULT});
+	$value = $value - 2;
+	$cmd_params = "$_->{NAME}=$value";
+	load_module($cmd_params) or die;
+	test ($_->{NAME}, $_->{DEFAULT});
+      }
+    }
+  }
+
+  test_status() or die;
+}
+
+test_main();
+0;
diff -Nur linux-3.18.10/drivers/usb/host/dwc_otg/test/test_sysfs.pl linux-rpi/drivers/usb/host/dwc_otg/test/test_sysfs.pl
--- linux-3.18.10/drivers/usb/host/dwc_otg/test/test_sysfs.pl	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/usb/host/dwc_otg/test/test_sysfs.pl	2015-03-26 11:46:54.320238212 +0100
@@ -0,0 +1,193 @@
+#!/usr/bin/perl -w
+#
+# Run this program on the integrator
+# - Tests select sysfs attributes.
+# - Todo ... test more attributes, hnp/srp, buspower/bussuspend, etc.
+# -----------------------------------------------------------------------------
+use strict;
+use dwc_otg_test;
+
+check_arch() or die;
+
+#
+#
+sub test {
+  my ($attr,$expected) = @_;
+  my $string = get($attr);
+
+  if ($string eq $expected) {
+    printf("$attr = $string, okay\n");
+  }
+  else {
+    warn "ERROR: value of $attr != $expected, $string\n";
+    $errors ++;
+  }
+}
+
+#
+#
+sub set {
+  my ($reg, $value) = @_;
+  system "echo $value > $sysfsdir/$reg";
+}
+
+#
+#
+sub get {
+  my $attr = shift;
+  my $string = `cat $sysfsdir/$attr`;
+  chomp $string;
+  if ($string =~ m/\s\=\s/) {
+    my $tmp;
+    ($tmp, $string) = split /\s=\s/, $string;
+  }
+  return $string;
+}
+
+#
+#
+sub test_main {
+  print("\nTesting Sysfs Attributes\n");
+
+  load_module("") or die;
+
+  # Test initial values of regoffset/regvalue/guid/gsnpsid
+  print("\nTesting Default Values\n");
+
+  test("regoffset", "0xffffffff");
+  test("regvalue", "invalid offset");
+  test("guid", "0x12345678");	# this will fail if it has been changed
+  test("gsnpsid", "0x4f54200a");
+
+  # Test operation of regoffset/regvalue
+  print("\nTesting regoffset\n");
+  set('regoffset', '5a5a5a5a');
+  test("regoffset", "0xffffffff");
+
+  set('regoffset', '0');
+  test("regoffset", "0x00000000");
+
+  set('regoffset', '40000');
+  test("regoffset", "0x00000000");
+
+  set('regoffset', '3ffff');
+  test("regoffset", "0x0003ffff");
+
+  set('regoffset', '1');
+  test("regoffset", "0x00000001");
+
+  print("\nTesting regvalue\n");
+  set('regoffset', '3c');
+  test("regvalue", "0x12345678");
+  set('regvalue', '5a5a5a5a');
+  test("regvalue", "0x5a5a5a5a");
+  set('regvalue','a5a5a5a5');
+  test("regvalue", "0xa5a5a5a5");
+  set('guid','12345678');
+
+  # Test HNP Capable
+  print("\nTesting HNP Capable bit\n");
+  set('hnpcapable', '1');
+  test("hnpcapable", "0x1");
+  set('hnpcapable','0');
+  test("hnpcapable", "0x0");
+
+  set('regoffset','0c');
+
+  my $old = get('gusbcfg');
+  print("setting hnpcapable\n");
+  set('hnpcapable', '1');
+  test("hnpcapable", "0x1");
+  test('gusbcfg', sprintf "0x%08x", (oct ($old) | (1<<9)));
+  test('regvalue', sprintf "0x%08x", (oct ($old) | (1<<9)));
+
+  $old = get('gusbcfg');
+  print("clearing hnpcapable\n");
+  set('hnpcapable', '0');
+  test("hnpcapable", "0x0");
+  test ('gusbcfg', sprintf "0x%08x", oct ($old) & (~(1<<9)));
+  test ('regvalue', sprintf "0x%08x", oct ($old) & (~(1<<9)));
+
+  # Test SRP Capable
+  print("\nTesting SRP Capable bit\n");
+  set('srpcapable', '1');
+  test("srpcapable", "0x1");
+  set('srpcapable','0');
+  test("srpcapable", "0x0");
+
+  set('regoffset','0c');
+
+  $old = get('gusbcfg');
+  print("setting srpcapable\n");
+  set('srpcapable', '1');
+  test("srpcapable", "0x1");
+  test('gusbcfg', sprintf "0x%08x", (oct ($old) | (1<<8)));
+  test('regvalue', sprintf "0x%08x", (oct ($old) | (1<<8)));
+
+  $old = get('gusbcfg');
+  print("clearing srpcapable\n");
+  set('srpcapable', '0');
+  test("srpcapable", "0x0");
+  test('gusbcfg', sprintf "0x%08x", oct ($old) & (~(1<<8)));
+  test('regvalue', sprintf "0x%08x", oct ($old) & (~(1<<8)));
+
+  # Test GGPIO
+  print("\nTesting GGPIO\n");
+  set('ggpio','5a5a5a5a');
+  test('ggpio','0x5a5a0000');
+  set('ggpio','a5a5a5a5');
+  test('ggpio','0xa5a50000');
+  set('ggpio','11110000');
+  test('ggpio','0x11110000');
+  set('ggpio','00001111');
+  test('ggpio','0x00000000');
+
+  # Test DEVSPEED
+  print("\nTesting DEVSPEED\n");
+  set('regoffset','800');
+  $old = get('regvalue');
+  set('devspeed','0');
+  test('devspeed','0x0');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3)));
+  set('devspeed','1');
+  test('devspeed','0x1');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 1));
+  set('devspeed','2');
+  test('devspeed','0x2');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 2));
+  set('devspeed','3');
+  test('devspeed','0x3');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 3));
+  set('devspeed','4');
+  test('devspeed','0x0');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3)));
+  set('devspeed','5');
+  test('devspeed','0x1');
+  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 1));
+
+
+  #  mode	Returns the current mode:0 for device mode1 for host mode	Read
+  #  hnp	Initiate the Host Negotiation Protocol.  Read returns the status.	Read/Write
+  #  srp	Initiate the Session Request Protocol.  Read returns the status.	Read/Write
+  #  buspower	Get or Set the Power State of the bus (0 - Off or 1 - On) 	Read/Write
+  #  bussuspend	Suspend the USB bus.	Read/Write
+  #  busconnected	Get the connection status of the bus 	Read
+
+  #  gotgctl	Get or set the Core Control Status Register.	Read/Write
+  ##  gusbcfg	Get or set the Core USB Configuration Register	Read/Write
+  #  grxfsiz	Get or set the Receive FIFO Size Register	Read/Write
+  #  gnptxfsiz	Get or set the non-periodic Transmit Size Register	Read/Write
+  #  gpvndctl	Get or set the PHY Vendor Control Register	Read/Write
+  ##  ggpio	Get the value in the lower 16-bits of the General Purpose IO Register or Set the upper 16 bits.	Read/Write
+  ##  guid	Get or set the value of the User ID Register	Read/Write
+  ##  gsnpsid	Get the value of the Synopsys ID Regester	Read
+  ##  devspeed	Get or set the device speed setting in the DCFG register	Read/Write
+  #  enumspeed	Gets the device enumeration Speed.	Read
+  #  hptxfsiz	Get the value of the Host Periodic Transmit FIFO	Read
+  #  hprt0	Get or Set the value in the Host Port Control and Status Register	Read/Write
+
+  test_status("TEST NYI") or die;
+}
+
+test_main();
+0;
diff -Nur linux-3.18.10/drivers/usb/host/Kconfig linux-rpi/drivers/usb/host/Kconfig
--- linux-3.18.10/drivers/usb/host/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/usb/host/Kconfig	2015-03-26 11:46:54.308238199 +0100
@@ -744,6 +744,19 @@
 	  To compile this driver a module, choose M here: the module
 	  will be called "hwa-hc".
 
+config USB_DWCOTG
+	tristate "Synopsis DWC host support"
+	depends on USB
+	help
+	  The Synopsis DWC controller is a dual-role
+	  host/peripheral/OTG ("On The Go") USB controllers.
+
+	  Enable this option to support this IP in host controller mode.
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  modules built will be called dwc_otg and dwc_common_port.
+
 config USB_IMX21_HCD
        tristate "i.MX21 HCD support"
        depends on ARM && ARCH_MXC
diff -Nur linux-3.18.10/drivers/usb/host/Makefile linux-rpi/drivers/usb/host/Makefile
--- linux-3.18.10/drivers/usb/host/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/usb/host/Makefile	2015-03-26 11:46:54.308238199 +0100
@@ -71,6 +71,8 @@
 obj-$(CONFIG_USB_R8A66597_HCD)	+= r8a66597-hcd.o
 obj-$(CONFIG_USB_ISP1760_HCD)	+= isp1760.o
 obj-$(CONFIG_USB_HWA_HCD)	+= hwa-hc.o
+
+obj-$(CONFIG_USB_DWCOTG)        += dwc_otg/ dwc_common_port/
 obj-$(CONFIG_USB_IMX21_HCD)	+= imx21-hcd.o
 obj-$(CONFIG_USB_FSL_MPH_DR_OF)	+= fsl-mph-dr-of.o
 obj-$(CONFIG_USB_OCTEON2_COMMON) += octeon2-common.o
diff -Nur linux-3.18.10/drivers/usb/Makefile linux-rpi/drivers/usb/Makefile
--- linux-3.18.10/drivers/usb/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/usb/Makefile	2015-03-26 11:46:54.248238147 +0100
@@ -24,6 +24,7 @@
 obj-$(CONFIG_USB_R8A66597_HCD)	+= host/
 obj-$(CONFIG_USB_HWA_HCD)	+= host/
 obj-$(CONFIG_USB_ISP1760_HCD)	+= host/
+obj-$(CONFIG_USB_DWCOTG)	+= host/
 obj-$(CONFIG_USB_IMX21_HCD)	+= host/
 obj-$(CONFIG_USB_FSL_MPH_DR_OF)	+= host/
 obj-$(CONFIG_USB_FUSBH200_HCD)	+= host/
diff -Nur linux-3.18.10/drivers/video/fbdev/bcm2708_fb.c linux-rpi/drivers/video/fbdev/bcm2708_fb.c
--- linux-3.18.10/drivers/video/fbdev/bcm2708_fb.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/video/fbdev/bcm2708_fb.c	2015-03-26 11:46:54.428238312 +0100
@@ -0,0 +1,818 @@
+/*
+ *  linux/drivers/video/bcm2708_fb.c
+ *
+ * Copyright (C) 2010 Broadcom
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * Broadcom simple framebuffer driver
+ *
+ * This file is derived from cirrusfb.c
+ * Copyright 1999-2001 Jeff Garzik <jgarzik@pobox.com>
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/list.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/printk.h>
+#include <linux/console.h>
+#include <linux/debugfs.h>
+
+#include <mach/dma.h>
+#include <mach/platform.h>
+#include <mach/vcio.h>
+
+#include <asm/sizes.h>
+#include <linux/io.h>
+#include <linux/dma-mapping.h>
+
+//#define BCM2708_FB_DEBUG
+#define MODULE_NAME "bcm2708_fb"
+
+#ifdef BCM2708_FB_DEBUG
+#define print_debug(fmt,...) pr_debug("%s:%s:%d: "fmt, MODULE_NAME, __func__, __LINE__, ##__VA_ARGS__)
+#else
+#define print_debug(fmt,...)
+#endif
+
+/* This is limited to 16 characters when displayed by X startup */
+static const char *bcm2708_name = "BCM2708 FB";
+
+#define DRIVER_NAME "bcm2708_fb"
+
+static int fbwidth = 800;  /* module parameter */
+static int fbheight = 480; /* module parameter */
+static int fbdepth = 16;   /* module parameter */
+static int fbswap = 0;     /* module parameter */
+
+static u32 dma_busy_wait_threshold = 1<<15;
+module_param(dma_busy_wait_threshold, int, 0644);
+MODULE_PARM_DESC(dma_busy_wait_threshold, "Busy-wait for DMA completion below this area");
+
+/* this data structure describes each frame buffer device we find */
+
+struct fbinfo_s {
+	u32 xres, yres, xres_virtual, yres_virtual;
+	u32 pitch, bpp;
+	u32 xoffset, yoffset;
+	u32 base;
+	u32 screen_size;
+	u16 cmap[256];
+};
+
+struct bcm2708_fb_stats {
+	struct debugfs_regset32 regset;
+	u32 dma_copies;
+	u32 dma_irqs;
+};
+
+struct bcm2708_fb {
+	struct fb_info fb;
+	struct platform_device *dev;
+	struct fbinfo_s *info;
+	dma_addr_t dma;
+	u32 cmap[16];
+	int dma_chan;
+	int dma_irq;
+	void __iomem *dma_chan_base;
+	void *cb_base;		/* DMA control blocks */
+	dma_addr_t cb_handle;
+	struct dentry *debugfs_dir;
+	wait_queue_head_t dma_waitq;
+	struct bcm2708_fb_stats stats;
+	unsigned long fb_bus_address;
+};
+
+#define to_bcm2708(info)	container_of(info, struct bcm2708_fb, fb)
+
+static void bcm2708_fb_debugfs_deinit(struct bcm2708_fb *fb)
+{
+	debugfs_remove_recursive(fb->debugfs_dir);
+	fb->debugfs_dir = NULL;
+}
+
+static int bcm2708_fb_debugfs_init(struct bcm2708_fb *fb)
+{
+	static struct debugfs_reg32 stats_registers[] = {
+		{
+			"dma_copies",
+			offsetof(struct bcm2708_fb_stats, dma_copies)
+		},
+		{
+			"dma_irqs",
+			offsetof(struct bcm2708_fb_stats, dma_irqs)
+		},
+	};
+
+	fb->debugfs_dir = debugfs_create_dir(DRIVER_NAME, NULL);
+	if (!fb->debugfs_dir) {
+		pr_warn("%s: could not create debugfs entry\n",
+			__func__);
+		return -EFAULT;
+	}
+
+	fb->stats.regset.regs = stats_registers;
+	fb->stats.regset.nregs = ARRAY_SIZE(stats_registers);
+	fb->stats.regset.base = &fb->stats;
+
+	if (!debugfs_create_regset32(
+		"stats", 0444, fb->debugfs_dir, &fb->stats.regset)) {
+		pr_warn("%s: could not create statistics registers\n",
+			__func__);
+		goto fail;
+	}
+	return 0;
+
+fail:
+	bcm2708_fb_debugfs_deinit(fb);
+	return -EFAULT;
+}
+
+static int bcm2708_fb_set_bitfields(struct fb_var_screeninfo *var)
+{
+	int ret = 0;
+
+	memset(&var->transp, 0, sizeof(var->transp));
+
+	var->red.msb_right = 0;
+	var->green.msb_right = 0;
+	var->blue.msb_right = 0;
+
+	switch (var->bits_per_pixel) {
+	case 1:
+	case 2:
+	case 4:
+	case 8:
+		var->red.length = var->bits_per_pixel;
+		var->red.offset = 0;
+		var->green.length = var->bits_per_pixel;
+		var->green.offset = 0;
+		var->blue.length = var->bits_per_pixel;
+		var->blue.offset = 0;
+		break;
+	case 16:
+		var->red.length = 5;
+		var->blue.length = 5;
+		/*
+		 * Green length can be 5 or 6 depending whether
+		 * we're operating in RGB555 or RGB565 mode.
+		 */
+		if (var->green.length != 5 && var->green.length != 6)
+			var->green.length = 6;
+		break;
+	case 24:
+		var->red.length = 8;
+		var->blue.length = 8;
+		var->green.length = 8;
+		break;
+	case 32:
+		var->red.length = 8;
+		var->green.length = 8;
+		var->blue.length = 8;
+		var->transp.length = 8;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	/*
+	 * >= 16bpp displays have separate colour component bitfields
+	 * encoded in the pixel data.  Calculate their position from
+	 * the bitfield length defined above.
+	 */
+	if (ret == 0 && var->bits_per_pixel >= 24 && fbswap) {
+		var->blue.offset = 0;
+		var->green.offset = var->blue.offset + var->blue.length;
+		var->red.offset = var->green.offset + var->green.length;
+		var->transp.offset = var->red.offset + var->red.length;
+	} else if (ret == 0 && var->bits_per_pixel >= 24) {
+		var->red.offset = 0;
+		var->green.offset = var->red.offset + var->red.length;
+		var->blue.offset = var->green.offset + var->green.length;
+		var->transp.offset = var->blue.offset + var->blue.length;
+	} else if (ret == 0 && var->bits_per_pixel >= 16) {
+		var->blue.offset = 0;
+		var->green.offset = var->blue.offset + var->blue.length;
+		var->red.offset = var->green.offset + var->green.length;
+		var->transp.offset = var->red.offset + var->red.length;
+	}
+
+	return ret;
+}
+
+static int bcm2708_fb_check_var(struct fb_var_screeninfo *var,
+				struct fb_info *info)
+{
+	/* info input, var output */
+	int yres;
+
+	/* info input, var output */
+	print_debug("bcm2708_fb_check_var info(%p) %dx%d (%dx%d), %d, %d\n", info,
+		info->var.xres, info->var.yres, info->var.xres_virtual,
+		info->var.yres_virtual, (int)info->screen_size,
+		info->var.bits_per_pixel);
+	print_debug("bcm2708_fb_check_var var(%p) %dx%d (%dx%d), %d\n", var,
+		var->xres, var->yres, var->xres_virtual, var->yres_virtual,
+		var->bits_per_pixel);
+
+	if (!var->bits_per_pixel)
+		var->bits_per_pixel = 16;
+
+	if (bcm2708_fb_set_bitfields(var) != 0) {
+		pr_err("bcm2708_fb_check_var: invalid bits_per_pixel %d\n",
+		     var->bits_per_pixel);
+		return -EINVAL;
+	}
+
+
+	if (var->xres_virtual < var->xres)
+		var->xres_virtual = var->xres;
+	/* use highest possible virtual resolution */
+	if (var->yres_virtual == -1) {
+		var->yres_virtual = 480;
+
+		pr_err
+		    ("bcm2708_fb_check_var: virtual resolution set to maximum of %dx%d\n",
+		     var->xres_virtual, var->yres_virtual);
+	}
+	if (var->yres_virtual < var->yres)
+		var->yres_virtual = var->yres;
+
+	if (var->xoffset < 0)
+		var->xoffset = 0;
+	if (var->yoffset < 0)
+		var->yoffset = 0;
+
+	/* truncate xoffset and yoffset to maximum if too high */
+	if (var->xoffset > var->xres_virtual - var->xres)
+		var->xoffset = var->xres_virtual - var->xres - 1;
+	if (var->yoffset > var->yres_virtual - var->yres)
+		var->yoffset = var->yres_virtual - var->yres - 1;
+
+	yres = var->yres;
+	if (var->vmode & FB_VMODE_DOUBLE)
+		yres *= 2;
+	else if (var->vmode & FB_VMODE_INTERLACED)
+		yres = (yres + 1) / 2;
+
+	return 0;
+}
+
+static int bcm2708_fb_set_par(struct fb_info *info)
+{
+	uint32_t val = 0;
+	struct bcm2708_fb *fb = to_bcm2708(info);
+	volatile struct fbinfo_s *fbinfo = fb->info;
+	fbinfo->xres = info->var.xres;
+	fbinfo->yres = info->var.yres;
+	fbinfo->xres_virtual = info->var.xres_virtual;
+	fbinfo->yres_virtual = info->var.yres_virtual;
+	fbinfo->bpp = info->var.bits_per_pixel;
+	fbinfo->xoffset = info->var.xoffset;
+	fbinfo->yoffset = info->var.yoffset;
+	fbinfo->base = 0;	/* filled in by VC */
+	fbinfo->pitch = 0;	/* filled in by VC */
+
+	print_debug("bcm2708_fb_set_par info(%p) %dx%d (%dx%d), %d, %d\n", info,
+		info->var.xres, info->var.yres, info->var.xres_virtual,
+		info->var.yres_virtual, (int)info->screen_size,
+		info->var.bits_per_pixel);
+
+	/* ensure last write to fbinfo is visible to GPU */
+	wmb();
+
+	/* inform vc about new framebuffer */
+	bcm_mailbox_write(MBOX_CHAN_FB, fb->dma);
+
+	/* TODO: replace fb driver with vchiq version */
+	/* wait for response */
+	bcm_mailbox_read(MBOX_CHAN_FB, &val);
+
+	/* ensure GPU writes are visible to us */
+	rmb();
+
+        if (val == 0) {
+		fb->fb.fix.line_length = fbinfo->pitch;
+
+		if (info->var.bits_per_pixel <= 8)
+			fb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
+		else
+			fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
+
+		fb->fb_bus_address = fbinfo->base;
+		fbinfo->base &= ~0xc0000000;
+		fb->fb.fix.smem_start = fbinfo->base;
+		fb->fb.fix.smem_len = fbinfo->pitch * fbinfo->yres_virtual;
+		fb->fb.screen_size = fbinfo->screen_size;
+		if (fb->fb.screen_base)
+			iounmap(fb->fb.screen_base);
+		fb->fb.screen_base =
+			(void *)ioremap_wc(fbinfo->base, fb->fb.screen_size);
+		if (!fb->fb.screen_base) {
+			/* the console may currently be locked */
+			console_trylock();
+			console_unlock();
+
+			BUG();		/* what can we do here */
+		}
+	}
+	print_debug
+	    ("BCM2708FB: start = %p,%p width=%d, height=%d, bpp=%d, pitch=%d size=%d success=%d\n",
+	     (void *)fb->fb.screen_base, (void *)fb->fb_bus_address,
+	     fbinfo->xres, fbinfo->yres, fbinfo->bpp,
+	     fbinfo->pitch, (int)fb->fb.screen_size, val);
+
+	return val;
+}
+
+static inline u32 convert_bitfield(int val, struct fb_bitfield *bf)
+{
+	unsigned int mask = (1 << bf->length) - 1;
+
+	return (val >> (16 - bf->length) & mask) << bf->offset;
+}
+
+
+static int bcm2708_fb_setcolreg(unsigned int regno, unsigned int red,
+				unsigned int green, unsigned int blue,
+				unsigned int transp, struct fb_info *info)
+{
+	struct bcm2708_fb *fb = to_bcm2708(info);
+
+	/*print_debug("BCM2708FB: setcolreg %d:(%02x,%02x,%02x,%02x) %x\n", regno, red, green, blue, transp, fb->fb.fix.visual);*/
+	if (fb->fb.var.bits_per_pixel <= 8) {
+		if (regno < 256) {
+			/* blue [0:4], green [5:10], red [11:15] */
+			fb->info->cmap[regno] = ((red   >> (16-5)) & 0x1f) << 11 |
+						((green >> (16-6)) & 0x3f) << 5 |
+						((blue  >> (16-5)) & 0x1f) << 0;
+		}
+		/* Hack: we need to tell GPU the palette has changed, but currently bcm2708_fb_set_par takes noticable time when called for every (256) colour */
+		/* So just call it for what looks like the last colour in a list for now. */
+		if (regno == 15 || regno == 255)
+			bcm2708_fb_set_par(info);
+        } else if (regno < 16) {
+		fb->cmap[regno] = convert_bitfield(transp, &fb->fb.var.transp) |
+		    convert_bitfield(blue, &fb->fb.var.blue) |
+		    convert_bitfield(green, &fb->fb.var.green) |
+		    convert_bitfield(red, &fb->fb.var.red);
+	}
+	return regno > 255;
+}
+
+static int bcm2708_fb_blank(int blank_mode, struct fb_info *info)
+{
+	s32 result = -1;
+	u32 p[7];
+	if ( 	(blank_mode == FB_BLANK_NORMAL) || 
+		(blank_mode == FB_BLANK_UNBLANK)) {
+
+		p[0] = 28; //  size = sizeof u32 * length of p
+		p[1] = VCMSG_PROCESS_REQUEST; // process request
+		p[2] = VCMSG_SET_BLANK_SCREEN; // (the tag id)
+		p[3] = 4; // (size of the response buffer)
+		p[4] = 4; // (size of the request data)
+		p[5] = blank_mode;
+		p[6] = VCMSG_PROPERTY_END; // end tag
+	
+		bcm_mailbox_property(&p, p[0]);
+	
+		if ( p[1] == VCMSG_REQUEST_SUCCESSFUL )
+			result = 0;
+		else
+			pr_err("bcm2708_fb_blank(%d) returns=%d p[1]=0x%x\n", blank_mode, p[5], p[1]);
+	}
+	return result;
+}
+
+static int bcm2708_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	s32 result = -1;
+	info->var.xoffset = var->xoffset;
+	info->var.yoffset = var->yoffset;
+	result = bcm2708_fb_set_par(info);
+	if (result != 0)
+		pr_err("bcm2708_fb_pan_display(%d,%d) returns=%d\n", var->xoffset, var->yoffset, result);
+	return result;
+}
+
+static int bcm2708_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
+{
+	s32 result = -1;
+	u32 p[7];
+	if (cmd == FBIO_WAITFORVSYNC) {
+		p[0] = 28; //  size = sizeof u32 * length of p
+		p[1] = VCMSG_PROCESS_REQUEST; // process request
+		p[2] = VCMSG_SET_VSYNC; // (the tag id)
+		p[3] = 4; // (size of the response buffer)
+		p[4] = 4; // (size of the request data)
+		p[5] = 0; // dummy
+		p[6] = VCMSG_PROPERTY_END; // end tag
+
+		bcm_mailbox_property(&p, p[0]);
+
+		if ( p[1] == VCMSG_REQUEST_SUCCESSFUL )
+			result = 0;
+		else
+			pr_err("bcm2708_fb_ioctl %x,%lx returns=%d p[1]=0x%x\n", cmd, arg, p[5], p[1]);
+	}
+	return result;
+}
+static void bcm2708_fb_fillrect(struct fb_info *info,
+				const struct fb_fillrect *rect)
+{
+	/* (is called) print_debug("bcm2708_fb_fillrect\n"); */
+	cfb_fillrect(info, rect);
+}
+
+/* A helper function for configuring dma control block */
+static void set_dma_cb(struct bcm2708_dma_cb *cb,
+		       int        burst_size,
+		       dma_addr_t dst,
+		       int        dst_stride,
+		       dma_addr_t src,
+		       int        src_stride,
+		       int        w,
+		       int        h)
+{
+	cb->info = BCM2708_DMA_BURST(burst_size) | BCM2708_DMA_S_WIDTH |
+		   BCM2708_DMA_S_INC | BCM2708_DMA_D_WIDTH |
+		   BCM2708_DMA_D_INC | BCM2708_DMA_TDMODE;
+	cb->dst = dst;
+	cb->src = src;
+	/*
+	 * This is not really obvious from the DMA documentation,
+	 * but the top 16 bits must be programmmed to "height -1"
+	 * and not "height" in 2D mode.
+	 */
+	cb->length = ((h - 1) << 16) | w;
+	cb->stride = ((dst_stride - w) << 16) | (u16)(src_stride - w);
+	cb->pad[0] = 0;
+	cb->pad[1] = 0;
+}
+
+static void bcm2708_fb_copyarea(struct fb_info *info,
+				const struct fb_copyarea *region)
+{
+	struct bcm2708_fb *fb = to_bcm2708(info);
+	struct bcm2708_dma_cb *cb = fb->cb_base;
+	int bytes_per_pixel = (info->var.bits_per_pixel + 7) >> 3;
+	/* Channel 0 supports larger bursts and is a bit faster */
+	int burst_size = (fb->dma_chan == 0) ? 8 : 2;
+	int pixels = region->width * region->height;
+
+	/* Fallback to cfb_copyarea() if we don't like something */
+	if (in_atomic() ||
+	    bytes_per_pixel > 4 ||
+	    info->var.xres * info->var.yres > 1920 * 1200 ||
+	    region->width <= 0 || region->width > info->var.xres ||
+	    region->height <= 0 || region->height > info->var.yres ||
+	    region->sx < 0 || region->sx >= info->var.xres ||
+	    region->sy < 0 || region->sy >= info->var.yres ||
+	    region->dx < 0 || region->dx >= info->var.xres ||
+	    region->dy < 0 || region->dy >= info->var.yres ||
+	    region->sx + region->width > info->var.xres ||
+	    region->dx + region->width > info->var.xres ||
+	    region->sy + region->height > info->var.yres ||
+	    region->dy + region->height > info->var.yres) {
+		cfb_copyarea(info, region);
+		return;
+	}
+
+	if (region->dy == region->sy && region->dx > region->sx) {
+		/*
+		 * A difficult case of overlapped copy. Because DMA can't
+		 * copy individual scanlines in backwards direction, we need
+		 * two-pass processing. We do it by programming a chain of dma
+		 * control blocks in the first 16K part of the buffer and use
+		 * the remaining 48K as the intermediate temporary scratch
+		 * buffer. The buffer size is sufficient to handle up to
+		 * 1920x1200 resolution at 32bpp pixel depth.
+		 */
+		int y;
+		dma_addr_t control_block_pa = fb->cb_handle;
+		dma_addr_t scratchbuf = fb->cb_handle + 16 * 1024;
+		int scanline_size = bytes_per_pixel * region->width;
+		int scanlines_per_cb = (64 * 1024 - 16 * 1024) / scanline_size;
+
+		for (y = 0; y < region->height; y += scanlines_per_cb) {
+			dma_addr_t src =
+				fb->fb_bus_address +
+				bytes_per_pixel * region->sx +
+				(region->sy + y) * fb->fb.fix.line_length;
+			dma_addr_t dst =
+				fb->fb_bus_address +
+				bytes_per_pixel * region->dx +
+				(region->dy + y) * fb->fb.fix.line_length;
+
+			if (region->height - y < scanlines_per_cb)
+				scanlines_per_cb = region->height - y;
+
+			set_dma_cb(cb, burst_size, scratchbuf, scanline_size,
+				   src, fb->fb.fix.line_length,
+				   scanline_size, scanlines_per_cb);
+			control_block_pa += sizeof(struct bcm2708_dma_cb);
+			cb->next = control_block_pa;
+			cb++;
+
+			set_dma_cb(cb, burst_size, dst, fb->fb.fix.line_length,
+				   scratchbuf, scanline_size,
+				   scanline_size, scanlines_per_cb);
+			control_block_pa += sizeof(struct bcm2708_dma_cb);
+			cb->next = control_block_pa;
+			cb++;
+		}
+		/* move the pointer back to the last dma control block */
+		cb--;
+	} else {
+		/* A single dma control block is enough. */
+		int sy, dy, stride;
+		if (region->dy <= region->sy) {
+			/* processing from top to bottom */
+			dy = region->dy;
+			sy = region->sy;
+			stride = fb->fb.fix.line_length;
+		} else {
+			/* processing from bottom to top */
+			dy = region->dy + region->height - 1;
+			sy = region->sy + region->height - 1;
+			stride = -fb->fb.fix.line_length;
+		}
+		set_dma_cb(cb, burst_size,
+			   fb->fb_bus_address + dy * fb->fb.fix.line_length +
+						   bytes_per_pixel * region->dx,
+			   stride,
+			   fb->fb_bus_address + sy * fb->fb.fix.line_length +
+						   bytes_per_pixel * region->sx,
+			   stride,
+			   region->width * bytes_per_pixel,
+			   region->height);
+	}
+
+	/* end of dma control blocks chain */
+	cb->next = 0;
+
+
+	if (pixels < dma_busy_wait_threshold) {
+		bcm_dma_start(fb->dma_chan_base, fb->cb_handle);
+		bcm_dma_wait_idle(fb->dma_chan_base);
+	} else {
+		void __iomem *dma_chan = fb->dma_chan_base;
+		cb->info |= BCM2708_DMA_INT_EN;
+		bcm_dma_start(fb->dma_chan_base, fb->cb_handle);
+		while (bcm_dma_is_busy(dma_chan)) {
+			wait_event_interruptible(
+				fb->dma_waitq,
+				!bcm_dma_is_busy(dma_chan));
+		}
+		fb->stats.dma_irqs++;
+	}
+	fb->stats.dma_copies++;
+}
+
+static void bcm2708_fb_imageblit(struct fb_info *info,
+				 const struct fb_image *image)
+{
+	/* (is called) print_debug("bcm2708_fb_imageblit\n"); */
+	cfb_imageblit(info, image);
+}
+
+static irqreturn_t bcm2708_fb_dma_irq(int irq, void *cxt)
+{
+	struct bcm2708_fb *fb = cxt;
+
+	/* FIXME: should read status register to check if this is
+	 * actually interrupting us or not, in case this interrupt
+	 * ever becomes shared amongst several DMA channels
+	 *
+	 * readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_IRQ;
+	 */
+
+	/* acknowledge the interrupt */
+	writel(BCM2708_DMA_INT, fb->dma_chan_base + BCM2708_DMA_CS);
+
+	wake_up(&fb->dma_waitq);
+	return IRQ_HANDLED;
+}
+
+static struct fb_ops bcm2708_fb_ops = {
+	.owner = THIS_MODULE,
+	.fb_check_var = bcm2708_fb_check_var,
+	.fb_set_par = bcm2708_fb_set_par,
+	.fb_setcolreg = bcm2708_fb_setcolreg,
+	.fb_blank = bcm2708_fb_blank,
+	.fb_fillrect = bcm2708_fb_fillrect,
+	.fb_copyarea = bcm2708_fb_copyarea,
+	.fb_imageblit = bcm2708_fb_imageblit,
+	.fb_pan_display = bcm2708_fb_pan_display,
+	.fb_ioctl = bcm2708_ioctl,
+};
+
+static int bcm2708_fb_register(struct bcm2708_fb *fb)
+{
+	int ret;
+	dma_addr_t dma;
+	void *mem;
+
+	mem =
+	    dma_alloc_coherent(NULL, PAGE_ALIGN(sizeof(*fb->info)), &dma,
+			       GFP_KERNEL);
+
+	if (NULL == mem) {
+		pr_err(": unable to allocate fbinfo buffer\n");
+		ret = -ENOMEM;
+	} else {
+		fb->info = (struct fbinfo_s *)mem;
+		fb->dma = dma;
+	}
+	fb->fb.fbops = &bcm2708_fb_ops;
+	fb->fb.flags = FBINFO_FLAG_DEFAULT | FBINFO_HWACCEL_COPYAREA;
+	fb->fb.pseudo_palette = fb->cmap;
+
+	strncpy(fb->fb.fix.id, bcm2708_name, sizeof(fb->fb.fix.id));
+	fb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
+	fb->fb.fix.type_aux = 0;
+	fb->fb.fix.xpanstep = 1;
+	fb->fb.fix.ypanstep = 1;
+	fb->fb.fix.ywrapstep = 0;
+	fb->fb.fix.accel = FB_ACCEL_NONE;
+
+	fb->fb.var.xres = fbwidth;
+	fb->fb.var.yres = fbheight;
+	fb->fb.var.xres_virtual = fbwidth;
+	fb->fb.var.yres_virtual = fbheight;
+	fb->fb.var.bits_per_pixel = fbdepth;
+	fb->fb.var.vmode = FB_VMODE_NONINTERLACED;
+	fb->fb.var.activate = FB_ACTIVATE_NOW;
+	fb->fb.var.nonstd = 0;
+	fb->fb.var.height = -1;		/* height of picture in mm    */
+	fb->fb.var.width = -1;		/* width of picture in mm    */
+	fb->fb.var.accel_flags = 0;
+
+	fb->fb.monspecs.hfmin = 0;
+	fb->fb.monspecs.hfmax = 100000;
+	fb->fb.monspecs.vfmin = 0;
+	fb->fb.monspecs.vfmax = 400;
+	fb->fb.monspecs.dclkmin = 1000000;
+	fb->fb.monspecs.dclkmax = 100000000;
+
+	bcm2708_fb_set_bitfields(&fb->fb.var);
+	init_waitqueue_head(&fb->dma_waitq);
+
+	/*
+	 * Allocate colourmap.
+	 */
+
+	fb_set_var(&fb->fb, &fb->fb.var);
+	bcm2708_fb_set_par(&fb->fb);
+
+	print_debug("BCM2708FB: registering framebuffer (%dx%d@%d) (%d)\n", fbwidth
+		fbheight, fbdepth, fbswap);
+
+	ret = register_framebuffer(&fb->fb);
+	print_debug("BCM2708FB: register framebuffer (%d)\n", ret);
+	if (ret == 0)
+		goto out;
+
+	print_debug("BCM2708FB: cannot register framebuffer (%d)\n", ret);
+out:
+	return ret;
+}
+
+static int bcm2708_fb_probe(struct platform_device *dev)
+{
+	struct bcm2708_fb *fb;
+	int ret;
+
+	fb = kzalloc(sizeof(struct bcm2708_fb), GFP_KERNEL);
+	if (!fb) {
+		dev_err(&dev->dev,
+			"could not allocate new bcm2708_fb struct\n");
+		ret = -ENOMEM;
+		goto free_region;
+	}
+
+	bcm2708_fb_debugfs_init(fb);
+
+	fb->cb_base = dma_alloc_writecombine(&dev->dev, SZ_64K,
+					     &fb->cb_handle, GFP_KERNEL);
+	if (!fb->cb_base) {
+		dev_err(&dev->dev, "cannot allocate DMA CBs\n");
+		ret = -ENOMEM;
+		goto free_fb;
+	}
+
+	pr_info("BCM2708FB: allocated DMA memory %08x\n",
+	       fb->cb_handle);
+
+	ret = bcm_dma_chan_alloc(BCM_DMA_FEATURE_BULK,
+				 &fb->dma_chan_base, &fb->dma_irq);
+	if (ret < 0) {
+		dev_err(&dev->dev, "couldn't allocate a DMA channel\n");
+		goto free_cb;
+	}
+	fb->dma_chan = ret;
+
+	ret = request_irq(fb->dma_irq, bcm2708_fb_dma_irq,
+			  0, "bcm2708_fb dma", fb);
+	if (ret) {
+		pr_err("%s: failed to request DMA irq\n", __func__);
+		goto free_dma_chan;
+	}
+
+
+	pr_info("BCM2708FB: allocated DMA channel %d @ %p\n",
+	       fb->dma_chan, fb->dma_chan_base);
+
+	fb->dev = dev;
+
+	ret = bcm2708_fb_register(fb);
+	if (ret == 0) {
+		platform_set_drvdata(dev, fb);
+		goto out;
+	}
+
+free_dma_chan:
+	bcm_dma_chan_free(fb->dma_chan);
+free_cb:
+	dma_free_writecombine(&dev->dev, SZ_64K, fb->cb_base, fb->cb_handle);
+free_fb:
+	kfree(fb);
+free_region:
+	dev_err(&dev->dev, "probe failed, err %d\n", ret);
+out:
+	return ret;
+}
+
+static int bcm2708_fb_remove(struct platform_device *dev)
+{
+	struct bcm2708_fb *fb = platform_get_drvdata(dev);
+
+	platform_set_drvdata(dev, NULL);
+
+	if (fb->fb.screen_base)
+		iounmap(fb->fb.screen_base);
+	unregister_framebuffer(&fb->fb);
+
+	dma_free_writecombine(&dev->dev, SZ_64K, fb->cb_base, fb->cb_handle);
+	bcm_dma_chan_free(fb->dma_chan);
+
+	dma_free_coherent(NULL, PAGE_ALIGN(sizeof(*fb->info)), (void *)fb->info,
+			  fb->dma);
+	bcm2708_fb_debugfs_deinit(fb);
+
+	free_irq(fb->dma_irq, fb);
+
+	kfree(fb);
+
+	return 0;
+}
+
+static struct platform_driver bcm2708_fb_driver = {
+	.probe = bcm2708_fb_probe,
+	.remove = bcm2708_fb_remove,
+	.driver = {
+		   .name = DRIVER_NAME,
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static int __init bcm2708_fb_init(void)
+{
+	return platform_driver_register(&bcm2708_fb_driver);
+}
+
+module_init(bcm2708_fb_init);
+
+static void __exit bcm2708_fb_exit(void)
+{
+	platform_driver_unregister(&bcm2708_fb_driver);
+}
+
+module_exit(bcm2708_fb_exit);
+
+module_param(fbwidth, int, 0644);
+module_param(fbheight, int, 0644);
+module_param(fbdepth, int, 0644);
+module_param(fbswap, int, 0644);
+
+MODULE_DESCRIPTION("BCM2708 framebuffer driver");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM_DESC(fbwidth, "Width of ARM Framebuffer");
+MODULE_PARM_DESC(fbheight, "Height of ARM Framebuffer");
+MODULE_PARM_DESC(fbdepth, "Bit depth of ARM Framebuffer");
+MODULE_PARM_DESC(fbswap, "Swap order of red and blue in 24 and 32 bit modes");
diff -Nur linux-3.18.10/drivers/video/fbdev/core/cfbimgblt.c linux-rpi/drivers/video/fbdev/core/cfbimgblt.c
--- linux-3.18.10/drivers/video/fbdev/core/cfbimgblt.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/video/fbdev/core/cfbimgblt.c	2015-03-26 11:46:54.436238317 +0100
@@ -28,6 +28,11 @@
  *
  *  Also need to add code to deal with cards endians that are different than
  *  the native cpu endians. I also need to deal with MSB position in the word.
+ *  Modified by Harm Hanemaaijer (fgenfb@yahoo.com) 2013:
+ *  - Provide optimized versions of fast_imageblit for 16 and 32bpp that are
+ *    significantly faster than the previous implementation.
+ *  - Simplify the fast/slow_imageblit selection code, avoiding integer
+ *    divides.
  */
 #include <linux/module.h>
 #include <linux/string.h>
@@ -262,6 +267,133 @@
 	}
 }	
 	
+/*
+ * Optimized fast_imageblit for bpp == 16. ppw = 2, bit_mask = 3 folded
+ * into the code, main loop unrolled.
+ */
+
+static inline void fast_imageblit16(const struct fb_image *image,
+				    struct fb_info *p, u8 __iomem * dst1,
+				    u32 fgcolor, u32 bgcolor)
+{
+	u32 fgx = fgcolor, bgx = bgcolor;
+	u32 spitch = (image->width + 7) / 8;
+	u32 end_mask, eorx;
+	const char *s = image->data, *src;
+	u32 __iomem *dst;
+	const u32 *tab = NULL;
+	int i, j, k;
+
+	tab = fb_be_math(p) ? cfb_tab16_be : cfb_tab16_le;
+
+	fgx <<= 16;
+	bgx <<= 16;
+	fgx |= fgcolor;
+	bgx |= bgcolor;
+
+	eorx = fgx ^ bgx;
+	k = image->width / 2;
+
+	for (i = image->height; i--;) {
+		dst = (u32 __iomem *) dst1;
+		src = s;
+
+		j = k;
+		while (j >= 4) {
+			u8 bits = *src;
+			end_mask = tab[(bits >> 6) & 3];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[(bits >> 4) & 3];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[(bits >> 2) & 3];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[bits & 3];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			src++;
+			j -= 4;
+		}
+		if (j != 0) {
+			u8 bits = *src;
+			end_mask = tab[(bits >> 6) & 3];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			if (j >= 2) {
+				end_mask = tab[(bits >> 4) & 3];
+				FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+				if (j == 3) {
+					end_mask = tab[(bits >> 2) & 3];
+					FB_WRITEL((end_mask & eorx) ^ bgx, dst);
+				}
+			}
+		}
+		dst1 += p->fix.line_length;
+		s += spitch;
+	}
+}
+
+/*
+ * Optimized fast_imageblit for bpp == 32. ppw = 1, bit_mask = 1 folded
+ * into the code, main loop unrolled.
+ */
+
+static inline void fast_imageblit32(const struct fb_image *image,
+				    struct fb_info *p, u8 __iomem * dst1,
+				    u32 fgcolor, u32 bgcolor)
+{
+	u32 fgx = fgcolor, bgx = bgcolor;
+	u32 spitch = (image->width + 7) / 8;
+	u32 end_mask, eorx;
+	const char *s = image->data, *src;
+	u32 __iomem *dst;
+	const u32 *tab = NULL;
+	int i, j, k;
+
+	tab = cfb_tab32;
+
+	eorx = fgx ^ bgx;
+	k = image->width;
+
+	for (i = image->height; i--;) {
+		dst = (u32 __iomem *) dst1;
+		src = s;
+
+		j = k;
+		while (j >= 8) {
+			u8 bits = *src;
+			end_mask = tab[(bits >> 7) & 1];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[(bits >> 6) & 1];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[(bits >> 5) & 1];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[(bits >> 4) & 1];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[(bits >> 3) & 1];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[(bits >> 2) & 1];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[(bits >> 1) & 1];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			end_mask = tab[bits & 1];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+			src++;
+			j -= 8;
+		}
+		if (j != 0) {
+			u32 bits = (u32) * src;
+			while (j > 1) {
+				end_mask = tab[(bits >> 7) & 1];
+				FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+				bits <<= 1;
+				j--;
+			}
+			end_mask = tab[(bits >> 7) & 1];
+			FB_WRITEL((end_mask & eorx) ^ bgx, dst);
+		}
+		dst1 += p->fix.line_length;
+		s += spitch;
+	}
+}
+
 void cfb_imageblit(struct fb_info *p, const struct fb_image *image)
 {
 	u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0;
@@ -294,11 +426,21 @@
 			bgcolor = image->bg_color;
 		}	
 		
-		if (32 % bpp == 0 && !start_index && !pitch_index && 
-		    ((width & (32/bpp-1)) == 0) &&
-		    bpp >= 8 && bpp <= 32) 			
-			fast_imageblit(image, p, dst1, fgcolor, bgcolor);
-		else 
+		if (!start_index && !pitch_index) {
+			if (bpp == 32)
+				fast_imageblit32(image, p, dst1, fgcolor,
+						 bgcolor);
+			else if (bpp == 16 && (width & 1) == 0)
+				fast_imageblit16(image, p, dst1, fgcolor,
+						 bgcolor);
+			else if (bpp == 8 && (width & 3) == 0)
+				fast_imageblit(image, p, dst1, fgcolor,
+					       bgcolor);
+			else
+				slow_imageblit(image, p, dst1, fgcolor,
+					       bgcolor,
+					       start_index, pitch_index);
+		} else
 			slow_imageblit(image, p, dst1, fgcolor, bgcolor,
 					start_index, pitch_index);
 	} else
diff -Nur linux-3.18.10/drivers/video/fbdev/core/fbmem.c linux-rpi/drivers/video/fbdev/core/fbmem.c
--- linux-3.18.10/drivers/video/fbdev/core/fbmem.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/video/fbdev/core/fbmem.c	2015-03-26 11:46:54.452238335 +0100
@@ -1084,6 +1084,25 @@
 }
 EXPORT_SYMBOL(fb_blank);
 
+static int fb_copyarea_user(struct fb_info *info,
+			    struct fb_copyarea *copy)
+{
+	int ret = 0;
+	if (!lock_fb_info(info))
+		return -ENODEV;
+	if (copy->dx + copy->width > info->var.xres ||
+	    copy->sx + copy->width > info->var.xres ||
+	    copy->dy + copy->height > info->var.yres ||
+	    copy->sy + copy->height > info->var.yres) {
+		ret = -EINVAL;
+		goto out;
+	}
+	info->fbops->fb_copyarea(info, copy);
+out:
+	unlock_fb_info(info);
+	return ret;
+}
+
 static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
 			unsigned long arg)
 {
@@ -1094,6 +1113,7 @@
 	struct fb_cmap cmap_from;
 	struct fb_cmap_user cmap;
 	struct fb_event event;
+	struct fb_copyarea copy;
 	void __user *argp = (void __user *)arg;
 	long ret = 0;
 
@@ -1211,6 +1231,15 @@
 		unlock_fb_info(info);
 		console_unlock();
 		break;
+	case FBIOCOPYAREA:
+		if (info->flags & FBINFO_HWACCEL_COPYAREA) {
+			/* only provide this ioctl if it is accelerated */
+			if (copy_from_user(&copy, argp, sizeof(copy)))
+				return -EFAULT;
+			ret = fb_copyarea_user(info, &copy);
+			break;
+		}
+		/* fall through */
 	default:
 		if (!lock_fb_info(info))
 			return -ENODEV;
@@ -1365,6 +1394,7 @@
 	case FBIOPAN_DISPLAY:
 	case FBIOGET_CON2FBMAP:
 	case FBIOPUT_CON2FBMAP:
+	case FBIOCOPYAREA:
 		arg = (unsigned long) compat_ptr(arg);
 	case FBIOBLANK:
 		ret = do_fb_ioctl(info, cmd, arg);
diff -Nur linux-3.18.10/drivers/video/fbdev/Kconfig linux-rpi/drivers/video/fbdev/Kconfig
--- linux-3.18.10/drivers/video/fbdev/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/video/fbdev/Kconfig	2015-03-26 11:46:54.420238304 +0100
@@ -224,6 +224,20 @@
 comment "Frame buffer hardware drivers"
 	depends on FB
 
+config FB_BCM2708
+	tristate "BCM2708 framebuffer support"
+	depends on FB && ARM
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	help
+	  This framebuffer device driver is for the BCM2708 framebuffer.
+
+	  If you want to compile this as a module (=code which can be
+	  inserted into and removed from the running kernel), say M
+	  here and read <file:Documentation/kbuild/modules.txt>.  The module
+	  will be called bcm2708_fb.
+
 config FB_GRVGA
 	tristate "Aeroflex Gaisler framebuffer support"
 	depends on FB && SPARC
diff -Nur linux-3.18.10/drivers/video/fbdev/Makefile linux-rpi/drivers/video/fbdev/Makefile
--- linux-3.18.10/drivers/video/fbdev/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/video/fbdev/Makefile	2015-03-26 11:46:54.420238304 +0100
@@ -12,6 +12,7 @@
 obj-$(CONFIG_FB_WMT_GE_ROPS)   += wmt_ge_rops.o
 
 # Hardware specific drivers go first
+obj-$(CONFIG_FB_BCM2708)	  += bcm2708_fb.o
 obj-$(CONFIG_FB_AMIGA)            += amifb.o c2p_planar.o
 obj-$(CONFIG_FB_ARC)              += arcfb.o
 obj-$(CONFIG_FB_CLPS711X)	  += clps711x-fb.o
diff -Nur linux-3.18.10/drivers/video/logo/logo_linux_clut224.ppm linux-rpi/drivers/video/logo/logo_linux_clut224.ppm
--- linux-3.18.10/drivers/video/logo/logo_linux_clut224.ppm	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/video/logo/logo_linux_clut224.ppm	2015-03-26 11:46:54.512238389 +0100
@@ -1,1604 +1,883 @@
 P3
-# Standard 224-color Linux logo
-80 80
+63 80
 255
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- 46  46  46  34  34  34   6   6   6   2   2   6
- 42  42  42  78  78  78  42  42  42  18  18  18
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-  2   2   6   2   2   6   2   2   6   2   2   6
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- 86  86  86  54  54  54  22  22  22   6   6   6
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  6   6   6  18  18  18  46  46  46  90  90  90
- 46  46  46  18  18  18   6   6   6 182 182 182
-253 253 253 246 246 246 206 206 206 190 190 190
-190 190 190 190 190 190 190 190 190 190 190 190
-206 206 206 231 231 231 250 250 250 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-202 202 202  14  14  14   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 42  42  42  86  86  86  42  42  42  18  18  18
-  6   6   6   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 14  14  14  38  38  38  74  74  74  66  66  66
-  2   2   6   6   6   6  90  90  90 250 250 250
-253 253 253 253 253 253 238 238 238 198 198 198
-190 190 190 190 190 190 195 195 195 221 221 221
-246 246 246 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253  82  82  82   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  78  78  78  70  70  70  34  34  34
- 14  14  14   6   6   6   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  14  14  14
- 34  34  34  66  66  66  78  78  78   6   6   6
-  2   2   6  18  18  18 218 218 218 253 253 253
-253 253 253 253 253 253 253 253 253 246 246 246
-226 226 226 231 231 231 246 246 246 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 178 178 178   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  18  18  18  90  90  90  62  62  62
- 30  30  30  10  10  10   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0  10  10  10  26  26  26
- 58  58  58  90  90  90  18  18  18   2   2   6
-  2   2   6 110 110 110 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-250 250 250 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 231 231 231  18  18  18   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6  18  18  18  94  94  94
- 54  54  54  26  26  26  10  10  10   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   6   6   6  22  22  22  50  50  50
- 90  90  90  26  26  26   2   2   6   2   2   6
- 14  14  14 195 195 195 250 250 250 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-250 250 250 242 242 242  54  54  54   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  38  38  38
- 86  86  86  50  50  50  22  22  22   6   6   6
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  6   6   6  14  14  14  38  38  38  82  82  82
- 34  34  34   2   2   6   2   2   6   2   2   6
- 42  42  42 195 195 195 246 246 246 253 253 253
-253 253 253 253 253 253 253 253 253 250 250 250
-242 242 242 242 242 242 250 250 250 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 250 250 250 246 246 246 238 238 238
-226 226 226 231 231 231 101 101 101   6   6   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 38  38  38  82  82  82  42  42  42  14  14  14
-  6   6   6   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
- 10  10  10  26  26  26  62  62  62  66  66  66
-  2   2   6   2   2   6   2   2   6   6   6   6
- 70  70  70 170 170 170 206 206 206 234 234 234
-246 246 246 250 250 250 250 250 250 238 238 238
-226 226 226 231 231 231 238 238 238 250 250 250
-250 250 250 250 250 250 246 246 246 231 231 231
-214 214 214 206 206 206 202 202 202 202 202 202
-198 198 198 202 202 202 182 182 182  18  18  18
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  62  62  62  66  66  66  30  30  30
- 10  10  10   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
- 14  14  14  42  42  42  82  82  82  18  18  18
-  2   2   6   2   2   6   2   2   6  10  10  10
- 94  94  94 182 182 182 218 218 218 242 242 242
-250 250 250 253 253 253 253 253 253 250 250 250
-234 234 234 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 246 246 246
-238 238 238 226 226 226 210 210 210 202 202 202
-195 195 195 195 195 195 210 210 210 158 158 158
-  6   6   6  14  14  14  50  50  50  14  14  14
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   6   6   6  86  86  86  46  46  46
- 18  18  18   6   6   6   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 22  22  22  54  54  54  70  70  70   2   2   6
-  2   2   6  10  10  10   2   2   6  22  22  22
-166 166 166 231 231 231 250 250 250 253 253 253
-253 253 253 253 253 253 253 253 253 250 250 250
-242 242 242 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 246 246 246
-231 231 231 206 206 206 198 198 198 226 226 226
- 94  94  94   2   2   6   6   6   6  38  38  38
- 30  30  30   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6  62  62  62  66  66  66
- 26  26  26  10  10  10   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 30  30  30  74  74  74  50  50  50   2   2   6
- 26  26  26  26  26  26   2   2   6 106 106 106
-238 238 238 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 246 246 246 218 218 218 202 202 202
-210 210 210  14  14  14   2   2   6   2   2   6
- 30  30  30  22  22  22   2   2   6   2   2   6
-  2   2   6   2   2   6  18  18  18  86  86  86
- 42  42  42  14  14  14   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  14  14  14
- 42  42  42  90  90  90  22  22  22   2   2   6
- 42  42  42   2   2   6  18  18  18 218 218 218
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 250 250 250 221 221 221
-218 218 218 101 101 101   2   2   6  14  14  14
- 18  18  18  38  38  38  10  10  10   2   2   6
-  2   2   6   2   2   6   2   2   6  78  78  78
- 58  58  58  22  22  22   6   6   6   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   6   6   6  18  18  18
- 54  54  54  82  82  82   2   2   6  26  26  26
- 22  22  22   2   2   6 123 123 123 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 250 250 250
-238 238 238 198 198 198   6   6   6  38  38  38
- 58  58  58  26  26  26  38  38  38   2   2   6
-  2   2   6   2   2   6   2   2   6  46  46  46
- 78  78  78  30  30  30  10  10  10   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0  10  10  10  30  30  30
- 74  74  74  58  58  58   2   2   6  42  42  42
-  2   2   6  22  22  22 231 231 231 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 250 250 250
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 246 246 246  46  46  46  38  38  38
- 42  42  42  14  14  14  38  38  38  14  14  14
-  2   2   6   2   2   6   2   2   6   6   6   6
- 86  86  86  46  46  46  14  14  14   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   6   6   6  14  14  14  42  42  42
- 90  90  90  18  18  18  18  18  18  26  26  26
-  2   2   6 116 116 116 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 250 250 250 238 238 238
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253  94  94  94   6   6   6
-  2   2   6   2   2   6  10  10  10  34  34  34
-  2   2   6   2   2   6   2   2   6   2   2   6
- 74  74  74  58  58  58  22  22  22   6   6   6
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0  10  10  10  26  26  26  66  66  66
- 82  82  82   2   2   6  38  38  38   6   6   6
- 14  14  14 210 210 210 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 246 246 246 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 144 144 144   2   2   6
-  2   2   6   2   2   6   2   2   6  46  46  46
-  2   2   6   2   2   6   2   2   6   2   2   6
- 42  42  42  74  74  74  30  30  30  10  10  10
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  6   6   6  14  14  14  42  42  42  90  90  90
- 26  26  26   6   6   6  42  42  42   2   2   6
- 74  74  74 250 250 250 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 242 242 242 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 182 182 182   2   2   6
-  2   2   6   2   2   6   2   2   6  46  46  46
-  2   2   6   2   2   6   2   2   6   2   2   6
- 10  10  10  86  86  86  38  38  38  10  10  10
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
- 10  10  10  26  26  26  66  66  66  82  82  82
-  2   2   6  22  22  22  18  18  18   2   2   6
-149 149 149 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 234 234 234 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 206 206 206   2   2   6
-  2   2   6   2   2   6   2   2   6  38  38  38
-  2   2   6   2   2   6   2   2   6   2   2   6
-  6   6   6  86  86  86  46  46  46  14  14  14
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 18  18  18  46  46  46  86  86  86  18  18  18
-  2   2   6  34  34  34  10  10  10   6   6   6
-210 210 210 253 253 253 253 253 253 253 253 253
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-253 253 253 253 253 253 234 234 234 242 242 242
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-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 221 221 221   6   6   6
-  2   2   6   2   2   6   6   6   6  30  30  30
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  82  82  82  54  54  54  18  18  18
-  6   6   6   0   0   0   0   0   0   0   0   0
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-  2   2   6  38  38  38  10  10  10  26  26  26
-238 238 238 253 253 253 253 253 253 253 253 253
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-253 253 253 253 253 253 253 253 253 253 253 253
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-253 253 253 253 253 253 231 231 231   6   6   6
-  2   2   6   2   2   6  10  10  10  30  30  30
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  66  66  66  58  58  58  22  22  22
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- 38  38  38  78  78  78   6   6   6   2   2   6
-  2   2   6  46  46  46  14  14  14  42  42  42
-246 246 246 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
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-  2   2   6   2   2   6  22  22  22  14  14  14
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  66  66  66  62  62  62  22  22  22
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- 50  50  50  74  74  74   2   2   6   2   2   6
- 14  14  14  70  70  70  34  34  34  62  62  62
-250 250 250 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
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-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 234 234 234  14  14  14
-  2   2   6   2   2   6  30  30  30   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  66  66  66  62  62  62  22  22  22
-  6   6   6   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   6   6   6  18  18  18
- 54  54  54  62  62  62   2   2   6   2   2   6
-  2   2   6  30  30  30  46  46  46  70  70  70
-250 250 250 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
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-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 226 226 226  10  10  10
-  2   2   6   6   6   6  30  30  30   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  66  66  66  58  58  58  22  22  22
-  6   6   6   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   6   6   6  22  22  22
- 58  58  58  62  62  62   2   2   6   2   2   6
-  2   2   6   2   2   6  30  30  30  78  78  78
-250 250 250 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
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-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 206 206 206   2   2   6
- 22  22  22  34  34  34  18  14   6  22  22  22
- 26  26  26  18  18  18   6   6   6   2   2   6
-  2   2   6  82  82  82  54  54  54  18  18  18
-  6   6   6   0   0   0   0   0   0   0   0   0
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- 62  62  62 106 106 106  74  54  14 185 133  11
-210 162  10 121  92   8   6   6   6  62  62  62
-238 238 238 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
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-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 158 158 158  18  18  18
- 14  14  14   2   2   6   2   2   6   2   2   6
-  6   6   6  18  18  18  66  66  66  38  38  38
-  6   6   6  94  94  94  50  50  50  18  18  18
-  6   6   6   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   6   6   6
- 10  10  10  10  10  10  18  18  18  38  38  38
- 78  78  78 142 134 106 216 158  10 242 186  14
-246 190  14 246 190  14 156 118  10  10  10  10
- 90  90  90 238 238 238 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 231 231 231 250 250 250
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 246 230 190
-238 204  91 238 204  91 181 142  44  37  26   9
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6  38  38  38  46  46  46
- 26  26  26 106 106 106  54  54  54  18  18  18
-  6   6   6   0   0   0   0   0   0   0   0   0
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-  0   0   0   6   6   6  14  14  14  22  22  22
- 30  30  30  38  38  38  50  50  50  70  70  70
-106 106 106 190 142  34 226 170  11 242 186  14
-246 190  14 246 190  14 246 190  14 154 114  10
-  6   6   6  74  74  74 226 226 226 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 231 231 231 250 250 250
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 228 184  62
-241 196  14 241 208  19 232 195  16  38  30  10
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   6   6   6  30  30  30  26  26  26
-203 166  17 154 142  90  66  66  66  26  26  26
-  6   6   6   0   0   0   0   0   0   0   0   0
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-  6   6   6  18  18  18  38  38  38  58  58  58
- 78  78  78  86  86  86 101 101 101 123 123 123
-175 146  61 210 150  10 234 174  13 246 186  14
-246 190  14 246 190  14 246 190  14 238 190  10
-102  78  10   2   2   6  46  46  46 198 198 198
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 234 234 234 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 224 178  62
-242 186  14 241 196  14 210 166  10  22  18   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   6   6   6 121  92   8
-238 202  15 232 195  16  82  82  82  34  34  34
- 10  10  10   0   0   0   0   0   0   0   0   0
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- 14  14  14  38  38  38  70  70  70 154 122  46
-190 142  34 200 144  11 197 138  11 197 138  11
-213 154  11 226 170  11 242 186  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-225 175  15  46  32   6   2   2   6  22  22  22
-158 158 158 250 250 250 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 250 250 250 242 242 242 224 178  62
-239 182  13 236 186  11 213 154  11  46  32   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6  61  42   6 225 175  15
-238 190  10 236 186  11 112 100  78  42  42  42
- 14  14  14   0   0   0   0   0   0   0   0   0
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- 22  22  22  54  54  54 154 122  46 213 154  11
-226 170  11 230 174  11 226 170  11 226 170  11
-236 178  12 242 186  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-241 196  14 184 144  12  10  10  10   2   2   6
-  6   6   6 116 116 116 242 242 242 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 231 231 231 198 198 198 214 170  54
-236 178  12 236 178  12 210 150  10 137  92   6
- 18  14   6   2   2   6   2   2   6   2   2   6
-  6   6   6  70  47   6 200 144  11 236 178  12
-239 182  13 239 182  13 124 112  88  58  58  58
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-  0   0   0   0   0   0   0   0   0  10  10  10
- 30  30  30  70  70  70 180 133  36 226 170  11
-239 182  13 242 186  14 242 186  14 246 186  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 232 195  16  98  70   6   2   2   6
-  2   2   6   2   2   6  66  66  66 221 221 221
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 206 206 206 198 198 198 214 166  58
-230 174  11 230 174  11 216 158  10 192 133   9
-163 110   8 116  81   8 102  78  10 116  81   8
-167 114   7 197 138  11 226 170  11 239 182  13
-242 186  14 242 186  14 162 146  94  78  78  78
- 34  34  34  14  14  14   6   6   6   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 30  30  30  78  78  78 190 142  34 226 170  11
-239 182  13 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 241 196  14 203 166  17  22  18   6
-  2   2   6   2   2   6   2   2   6  38  38  38
-218 218 218 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-250 250 250 206 206 206 198 198 198 202 162  69
-226 170  11 236 178  12 224 166  10 210 150  10
-200 144  11 197 138  11 192 133   9 197 138  11
-210 150  10 226 170  11 242 186  14 246 190  14
-246 190  14 246 186  14 225 175  15 124 112  88
- 62  62  62  30  30  30  14  14  14   6   6   6
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 30  30  30  78  78  78 174 135  50 224 166  10
-239 182  13 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 241 196  14 139 102  15
-  2   2   6   2   2   6   2   2   6   2   2   6
- 78  78  78 250 250 250 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-250 250 250 214 214 214 198 198 198 190 150  46
-219 162  10 236 178  12 234 174  13 224 166  10
-216 158  10 213 154  11 213 154  11 216 158  10
-226 170  11 239 182  13 246 190  14 246 190  14
-246 190  14 246 190  14 242 186  14 206 162  42
-101 101 101  58  58  58  30  30  30  14  14  14
-  6   6   6   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 30  30  30  74  74  74 174 135  50 216 158  10
-236 178  12 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 241 196  14 226 184  13
- 61  42   6   2   2   6   2   2   6   2   2   6
- 22  22  22 238 238 238 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 226 226 226 187 187 187 180 133  36
-216 158  10 236 178  12 239 182  13 236 178  12
-230 174  11 226 170  11 226 170  11 230 174  11
-236 178  12 242 186  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 186  14 239 182  13
-206 162  42 106 106 106  66  66  66  34  34  34
- 14  14  14   6   6   6   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 26  26  26  70  70  70 163 133  67 213 154  11
-236 178  12 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 241 196  14
-190 146  13  18  14   6   2   2   6   2   2   6
- 46  46  46 246 246 246 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 221 221 221  86  86  86 156 107  11
-216 158  10 236 178  12 242 186  14 246 186  14
-242 186  14 239 182  13 239 182  13 242 186  14
-242 186  14 246 186  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-242 186  14 225 175  15 142 122  72  66  66  66
- 30  30  30  10  10  10   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 26  26  26  70  70  70 163 133  67 210 150  10
-236 178  12 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-232 195  16 121  92   8  34  34  34 106 106 106
-221 221 221 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-242 242 242  82  82  82  18  14   6 163 110   8
-216 158  10 236 178  12 242 186  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 242 186  14 163 133  67
- 46  46  46  18  18  18   6   6   6   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 30  30  30  78  78  78 163 133  67 210 150  10
-236 178  12 246 186  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-241 196  14 215 174  15 190 178 144 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 218 218 218
- 58  58  58   2   2   6  22  18   6 167 114   7
-216 158  10 236 178  12 246 186  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
-246 190  14 246 186  14 242 186  14 190 150  46
- 54  54  54  22  22  22   6   6   6   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  14  14  14
- 38  38  38  86  86  86 180 133  36 213 154  11
-236 178  12 246 186  14 246 190  14 246 190  14
-246 190  14 246 190  14 246 190  14 246 190  14
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+188 17 66  188 17 66  188 17 66  188 17 66  188 17 66  188 17 66
+191 17 67  180 16 63  95 9 33  7 1 3  0 0 0  0 0 0
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+189 17 66  188 17 66  188 17 66  189 17 66  191 17 67  187 17 66
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+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  14 1 5  68 6 24  131 12 46  166 15 58
+180 16 63  183 17 64  180 16 63  168 15 59  134 12 47  75 7 26
+17 2 6  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
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+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
+0 0 0  0 0 0  0 0 0
diff -Nur linux-3.18.10/drivers/w1/masters/w1-gpio.c linux-rpi/drivers/w1/masters/w1-gpio.c
--- linux-3.18.10/drivers/w1/masters/w1-gpio.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/w1/masters/w1-gpio.c	2015-03-26 11:46:54.528238404 +0100
@@ -23,6 +23,19 @@
 #include "../w1.h"
 #include "../w1_int.h"
 
+static int w1_gpio_pullup = 0;
+static int w1_gpio_pullup_orig = 0;
+module_param_named(pullup, w1_gpio_pullup, int, 0);
+MODULE_PARM_DESC(pullup, "Enable parasitic power (power on data) mode");
+static int w1_gpio_pullup_pin = -1;
+static int w1_gpio_pullup_pin_orig = -1;
+module_param_named(extpullup, w1_gpio_pullup_pin, int, 0);
+MODULE_PARM_DESC(extpullup, "GPIO external pullup pin number");
+static int w1_gpio_pin = -1;
+static int w1_gpio_pin_orig = -1;
+module_param_named(gpiopin, w1_gpio_pin, int, 0);
+MODULE_PARM_DESC(gpiopin, "GPIO pin number");
+
 static u8 w1_gpio_set_pullup(void *data, int delay)
 {
 	struct w1_gpio_platform_data *pdata = data;
@@ -67,6 +80,16 @@
 	return gpio_get_value(pdata->pin) ? 1 : 0;
 }
 
+static void w1_gpio_bitbang_pullup(void *data, u8 on)
+{
+	struct w1_gpio_platform_data *pdata = data;
+
+	if (on)
+		gpio_direction_output(pdata->pin, 1);
+	else
+		gpio_direction_input(pdata->pin);
+}
+
 #if defined(CONFIG_OF)
 static struct of_device_id w1_gpio_dt_ids[] = {
 	{ .compatible = "w1-gpio" },
@@ -80,6 +103,7 @@
 	struct w1_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	struct device_node *np = pdev->dev.of_node;
 	int gpio;
+	u32 value;
 
 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
@@ -88,6 +112,9 @@
 	if (of_get_property(np, "linux,open-drain", NULL))
 		pdata->is_open_drain = 1;
 
+	if (of_property_read_u32(np, "rpi,parasitic-power", &value) == 0)
+	    pdata->parasitic_power = (value != 0);
+
 	gpio = of_get_gpio(np, 0);
 	if (gpio < 0) {
 		if (gpio != -EPROBE_DEFER)
@@ -103,7 +130,7 @@
 	if (gpio == -EPROBE_DEFER)
 		return gpio;
 	/* ignore other errors as the pullup gpio is optional */
-	pdata->ext_pullup_enable_pin = gpio;
+	pdata->ext_pullup_enable_pin = (gpio >= 0) ? gpio : -1;
 
 	pdev->dev.platform_data = pdata;
 
@@ -113,13 +140,15 @@
 static int w1_gpio_probe(struct platform_device *pdev)
 {
 	struct w1_bus_master *master;
-	struct w1_gpio_platform_data *pdata;
+	struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
 	int err;
 
-	if (of_have_populated_dt()) {
-		err = w1_gpio_probe_dt(pdev);
-		if (err < 0)
-			return err;
+	if(pdata == NULL) {
+		if (of_have_populated_dt()) {
+			err = w1_gpio_probe_dt(pdev);
+			if (err < 0)
+				return err;
+		}
 	}
 
 	pdata = dev_get_platdata(&pdev->dev);
@@ -136,6 +165,22 @@
 		return -ENOMEM;
 	}
 
+	w1_gpio_pin_orig = pdata->pin;
+	w1_gpio_pullup_pin_orig = pdata->ext_pullup_enable_pin;
+	w1_gpio_pullup_orig = pdata->parasitic_power;
+
+	if(gpio_is_valid(w1_gpio_pin)) {
+		pdata->pin = w1_gpio_pin;
+		pdata->ext_pullup_enable_pin = -1;
+		pdata->parasitic_power = -1;
+	}
+	pdata->parasitic_power |= w1_gpio_pullup;
+	if(gpio_is_valid(w1_gpio_pullup_pin)) {
+		pdata->ext_pullup_enable_pin = w1_gpio_pullup_pin;
+	}
+
+	dev_info(&pdev->dev, "gpio pin %d, external pullup pin %d, parasitic power %d\n", pdata->pin, pdata->ext_pullup_enable_pin, pdata->parasitic_power);
+
 	err = devm_gpio_request(&pdev->dev, pdata->pin, "w1");
 	if (err) {
 		dev_err(&pdev->dev, "gpio_request (pin) failed\n");
@@ -165,6 +210,14 @@
 		master->set_pullup = w1_gpio_set_pullup;
 	}
 
+	if (pdata->parasitic_power) {
+		if (pdata->is_open_drain)
+			printk(KERN_ERR "w1-gpio 'pullup'(parasitic power) "
+			       "option doesn't work with open drain GPIO\n");
+		else
+			master->bitbang_pullup = w1_gpio_bitbang_pullup;
+	}
+
 	err = w1_add_master_device(master);
 	if (err) {
 		dev_err(&pdev->dev, "w1_add_master device failed\n");
@@ -195,6 +248,10 @@
 
 	w1_remove_master_device(master);
 
+	pdata->pin = w1_gpio_pin_orig;
+	pdata->ext_pullup_enable_pin = w1_gpio_pullup_pin_orig;
+	pdata->parasitic_power = w1_gpio_pullup_orig;
+
 	return 0;
 }
 
diff -Nur linux-3.18.10/drivers/w1/w1.h linux-rpi/drivers/w1/w1.h
--- linux-3.18.10/drivers/w1/w1.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/w1/w1.h	2015-03-26 11:46:54.528238404 +0100
@@ -171,6 +171,12 @@
 
 	u8		(*set_pullup)(void *, int);
 
+	/**
+	 * Turns the pullup on/off in bitbanging mode, takes an on/off argument.
+	 * @return -1=Error, 0=completed
+	 */
+	void (*bitbang_pullup) (void *, u8);
+
 	void		(*search)(void *, struct w1_master *,
 		u8, w1_slave_found_callback);
 };
diff -Nur linux-3.18.10/drivers/w1/w1_int.c linux-rpi/drivers/w1/w1_int.c
--- linux-3.18.10/drivers/w1/w1_int.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/w1/w1_int.c	2015-03-26 11:46:54.528238404 +0100
@@ -123,6 +123,20 @@
 		return(-EINVAL);
 	}
 
+	/* bitbanging hardware uses bitbang_pullup, other hardware uses set_pullup
+	 * and takes care of timing itself */
+	if (!master->write_byte && !master->touch_bit && master->set_pullup) {
+		printk(KERN_ERR "w1_add_master_device: set_pullup requires "
+			"write_byte or touch_bit, disabling\n");
+		master->set_pullup = NULL;
+	}
+
+	if (master->set_pullup && master->bitbang_pullup) {
+		printk(KERN_ERR "w1_add_master_device: set_pullup should not "
+		       "be set when bitbang_pullup is used, disabling\n");
+		master->set_pullup = NULL;
+	}
+
 	/* Lock until the device is added (or not) to w1_masters. */
 	mutex_lock(&w1_mlock);
 	/* Search for the first available id (starting at 1). */
diff -Nur linux-3.18.10/drivers/w1/w1_io.c linux-rpi/drivers/w1/w1_io.c
--- linux-3.18.10/drivers/w1/w1_io.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/w1/w1_io.c	2015-03-26 11:46:54.528238404 +0100
@@ -134,10 +134,22 @@
 static void w1_post_write(struct w1_master *dev)
 {
 	if (dev->pullup_duration) {
-		if (dev->enable_pullup && dev->bus_master->set_pullup)
-			dev->bus_master->set_pullup(dev->bus_master->data, 0);
-		else
+		if (dev->enable_pullup) {
+			if (dev->bus_master->set_pullup) {
+				dev->bus_master->set_pullup(dev->
+							    bus_master->data,
+							    0);
+			} else if (dev->bus_master->bitbang_pullup) {
+				dev->bus_master->
+				    bitbang_pullup(dev->bus_master->data, 1);
 			msleep(dev->pullup_duration);
+				dev->bus_master->
+				    bitbang_pullup(dev->bus_master->data, 0);
+			}
+		} else {
+			msleep(dev->pullup_duration);
+		}
+
 		dev->pullup_duration = 0;
 	}
 }
diff -Nur linux-3.18.10/drivers/watchdog/bcm2708_wdog.c linux-rpi/drivers/watchdog/bcm2708_wdog.c
--- linux-3.18.10/drivers/watchdog/bcm2708_wdog.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/drivers/watchdog/bcm2708_wdog.c	2015-03-26 11:46:54.528238404 +0100
@@ -0,0 +1,382 @@
+/*
+ *	Broadcom BCM2708 watchdog driver.
+ *
+ *	(c) Copyright 2010 Broadcom Europe Ltd
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ *
+ *      BCM2708 watchdog driver. Loosely based on wdt driver.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/miscdevice.h>
+#include <linux/watchdog.h>
+#include <linux/fs.h>
+#include <linux/ioport.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <mach/platform.h>
+
+#define SECS_TO_WDOG_TICKS(x) ((x) << 16)
+#define WDOG_TICKS_TO_SECS(x) ((x) >> 16)
+
+static unsigned long wdog_is_open;
+static uint32_t wdog_ticks;	       /* Ticks to load into wdog timer */
+static char expect_close;
+
+/*
+ *	Module parameters
+ */
+
+#define WD_TIMO 10		       /* Default heartbeat = 60 seconds */
+static int heartbeat = WD_TIMO;	       /* Heartbeat in seconds */
+
+module_param(heartbeat, int, 0);
+MODULE_PARM_DESC(heartbeat,
+	"Watchdog heartbeat in seconds. (0 < heartbeat < 65536, default="
+				__MODULE_STRING(WD_TIMO) ")");
+
+static int nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, int, 0);
+MODULE_PARM_DESC(nowayout,
+	"Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+
+static DEFINE_SPINLOCK(wdog_lock);
+
+/**
+ *	Start the watchdog driver.
+ */
+
+static int wdog_start(unsigned long timeout)
+{
+	uint32_t cur;
+	unsigned long flags;
+	spin_lock_irqsave(&wdog_lock, flags);
+
+	/* enable the watchdog */
+	iowrite32(PM_PASSWORD | (timeout & PM_WDOG_TIME_SET),
+		  __io_address(PM_WDOG));
+	cur = ioread32(__io_address(PM_RSTC));
+	iowrite32(PM_PASSWORD | (cur & PM_RSTC_WRCFG_CLR) |
+		  PM_RSTC_WRCFG_FULL_RESET, __io_address(PM_RSTC));
+
+	spin_unlock_irqrestore(&wdog_lock, flags);
+	return 0;
+}
+
+/**
+ *	Stop the watchdog driver.
+ */
+
+static int wdog_stop(void)
+{
+	iowrite32(PM_PASSWORD | PM_RSTC_RESET, __io_address(PM_RSTC));
+	printk(KERN_INFO "watchdog stopped\n");
+	return 0;
+}
+
+/**
+ *	Reload counter one with the watchdog heartbeat. We don't bother
+ *	reloading the cascade counter.
+ */
+
+static void wdog_ping(void)
+{
+	wdog_start(wdog_ticks);
+}
+
+/**
+ *	@t:		the new heartbeat value that needs to be set.
+ *
+ *	Set a new heartbeat value for the watchdog device. If the heartbeat
+ *	value is incorrect we keep the old value and return -EINVAL. If
+ *	successful we return 0.
+ */
+
+static int wdog_set_heartbeat(int t)
+{
+	if (t < 1 || t > WDOG_TICKS_TO_SECS(PM_WDOG_TIME_SET))
+		return -EINVAL;
+
+	heartbeat = t;
+	wdog_ticks = SECS_TO_WDOG_TICKS(t);
+	return 0;
+}
+
+/**
+ *	@file: file handle to the watchdog
+ *	@buf: buffer to write (unused as data does not matter here
+ *	@count: count of bytes
+ *	@ppos: pointer to the position to write. No seeks allowed
+ *
+ *	A write to a watchdog device is defined as a keepalive signal.
+ *
+ *      if 'nowayout' is set then normally a close() is ignored. But
+ *      if you write 'V' first then the close() will stop the timer.
+ */
+
+static ssize_t wdog_write(struct file *file, const char __user *buf,
+						size_t count, loff_t *ppos)
+{
+	if (count) {
+		if (!nowayout) {
+			size_t i;
+
+			/* In case it was set long ago */
+			expect_close = 0;
+
+			for (i = 0; i != count; i++) {
+				char c;
+				if (get_user(c, buf + i))
+					return -EFAULT;
+				if (c == 'V')
+					expect_close = 42;
+			}
+		}
+		wdog_ping();
+	}
+	return count;
+}
+
+static int wdog_get_status(void)
+{
+	unsigned long flags;
+	int status = 0;
+	spin_lock_irqsave(&wdog_lock, flags);
+	/* FIXME: readback reset reason */
+	spin_unlock_irqrestore(&wdog_lock, flags);
+	return status;
+}
+
+static uint32_t wdog_get_remaining(void)
+{
+	uint32_t ret = ioread32(__io_address(PM_WDOG));
+	return ret & PM_WDOG_TIME_SET;
+}
+
+/**
+ *	@file: file handle to the device
+ *	@cmd: watchdog command
+ *	@arg: argument pointer
+ *
+ *	The watchdog API defines a common set of functions for all watchdogs
+ *	according to their available features. We only actually usefully support
+ *	querying capabilities and current status.
+ */
+
+static long wdog_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	void __user *argp = (void __user *)arg;
+	int __user *p = argp;
+	int new_heartbeat;
+	int status;
+	int options;
+	uint32_t remaining;
+
+	struct watchdog_info ident = {
+		.options =		WDIOF_SETTIMEOUT|
+					WDIOF_MAGICCLOSE|
+					WDIOF_KEEPALIVEPING,
+		.firmware_version =	1,
+		.identity =		"BCM2708",
+	};
+
+	switch (cmd) {
+	case WDIOC_GETSUPPORT:
+		return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+	case WDIOC_GETSTATUS:
+		status = wdog_get_status();
+		return put_user(status, p);
+	case WDIOC_GETBOOTSTATUS:
+		return put_user(0, p);
+	case WDIOC_KEEPALIVE:
+		wdog_ping();
+		return 0;
+	case WDIOC_SETTIMEOUT:
+		if (get_user(new_heartbeat, p))
+			return -EFAULT;
+		if (wdog_set_heartbeat(new_heartbeat))
+			return -EINVAL;
+		wdog_ping();
+		/* Fall */
+	case WDIOC_GETTIMEOUT:
+		return put_user(heartbeat, p);
+	case WDIOC_GETTIMELEFT:
+		remaining = WDOG_TICKS_TO_SECS(wdog_get_remaining());
+		return put_user(remaining, p);
+	case WDIOC_SETOPTIONS:
+		if (get_user(options, p))
+			return -EFAULT;
+		if (options & WDIOS_DISABLECARD)
+			wdog_stop();
+		if (options & WDIOS_ENABLECARD)
+			wdog_start(wdog_ticks);
+		return 0;
+	default:
+		return -ENOTTY;
+	}
+}
+
+/**
+ *	@inode: inode of device
+ *	@file: file handle to device
+ *
+ *	The watchdog device has been opened. The watchdog device is single
+ *	open and on opening we load the counters.
+ */
+
+static int wdog_open(struct inode *inode, struct file *file)
+{
+	if (test_and_set_bit(0, &wdog_is_open))
+		return -EBUSY;
+	/*
+	 *	Activate
+	 */
+	wdog_start(wdog_ticks);
+	return nonseekable_open(inode, file);
+}
+
+/**
+ *	@inode: inode to board
+ *	@file: file handle to board
+ *
+ *	The watchdog has a configurable API. There is a religious dispute
+ *	between people who want their watchdog to be able to shut down and
+ *	those who want to be sure if the watchdog manager dies the machine
+ *	reboots. In the former case we disable the counters, in the latter
+ *	case you have to open it again very soon.
+ */
+
+static int wdog_release(struct inode *inode, struct file *file)
+{
+	if (expect_close == 42) {
+		wdog_stop();
+	} else {
+		printk(KERN_CRIT
+		 "wdt: WDT device closed unexpectedly.  WDT will not stop!\n");
+		wdog_ping();
+	}
+	clear_bit(0, &wdog_is_open);
+	expect_close = 0;
+	return 0;
+}
+
+/**
+ *	@this: our notifier block
+ *	@code: the event being reported
+ *	@unused: unused
+ *
+ *	Our notifier is called on system shutdowns. Turn the watchdog
+ *	off so that it does not fire during the next reboot.
+ */
+
+static int wdog_notify_sys(struct notifier_block *this, unsigned long code,
+	void *unused)
+{
+	if (code == SYS_DOWN || code == SYS_HALT)
+		wdog_stop();
+	return NOTIFY_DONE;
+}
+
+/*
+ *	Kernel Interfaces
+ */
+
+
+static const struct file_operations wdog_fops = {
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.write		= wdog_write,
+	.unlocked_ioctl	= wdog_ioctl,
+	.open		= wdog_open,
+	.release	= wdog_release,
+};
+
+static struct miscdevice wdog_miscdev = {
+	.minor	= WATCHDOG_MINOR,
+	.name	= "watchdog",
+	.fops	= &wdog_fops,
+};
+
+/*
+ *	The WDT card needs to learn about soft shutdowns in order to
+ *	turn the timebomb registers off.
+ */
+
+static struct notifier_block wdog_notifier = {
+	.notifier_call = wdog_notify_sys,
+};
+
+/**
+ *	cleanup_module:
+ *
+ *	Unload the watchdog. You cannot do this with any file handles open.
+ *	If your watchdog is set to continue ticking on close and you unload
+ *	it, well it keeps ticking. We won't get the interrupt but the board
+ *	will not touch PC memory so all is fine. You just have to load a new
+ *	module in 60 seconds or reboot.
+ */
+
+static void __exit wdog_exit(void)
+{
+	misc_deregister(&wdog_miscdev);
+	unregister_reboot_notifier(&wdog_notifier);
+}
+
+static int __init wdog_init(void)
+{
+	int ret;
+
+	/* Check that the heartbeat value is within it's range;
+	   if not reset to the default */
+	if (wdog_set_heartbeat(heartbeat)) {
+		wdog_set_heartbeat(WD_TIMO);
+		printk(KERN_INFO "bcm2708_wdog: heartbeat value must be "
+			"0 < heartbeat < %d, using %d\n",
+				WDOG_TICKS_TO_SECS(PM_WDOG_TIME_SET),
+				WD_TIMO);
+	}
+
+	ret = register_reboot_notifier(&wdog_notifier);
+	if (ret) {
+		printk(KERN_ERR
+		      "wdt: cannot register reboot notifier (err=%d)\n", ret);
+		goto out_reboot;
+	}
+
+	ret = misc_register(&wdog_miscdev);
+	if (ret) {
+		printk(KERN_ERR
+			"wdt: cannot register miscdev on minor=%d (err=%d)\n",
+							WATCHDOG_MINOR, ret);
+		goto out_misc;
+	}
+
+	printk(KERN_INFO "bcm2708 watchdog, heartbeat=%d sec (nowayout=%d)\n",
+		heartbeat, nowayout);
+	return 0;
+
+out_misc:
+	unregister_reboot_notifier(&wdog_notifier);
+out_reboot:
+	return ret;
+}
+
+module_init(wdog_init);
+module_exit(wdog_exit);
+
+MODULE_AUTHOR("Luke Diamand");
+MODULE_DESCRIPTION("Driver for BCM2708 watchdog");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
+MODULE_ALIAS_MISCDEV(TEMP_MINOR);
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/drivers/watchdog/Kconfig linux-rpi/drivers/watchdog/Kconfig
--- linux-3.18.10/drivers/watchdog/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/watchdog/Kconfig	2015-03-26 11:46:54.528238404 +0100
@@ -452,6 +452,12 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called retu_wdt.
 
+config BCM2708_WDT
+	tristate "BCM2708 Watchdog"
+	depends on ARCH_BCM2708 || ARCH_BCM2709
+	help
+	  Enables BCM2708 watchdog support.
+
 config MOXART_WDT
 	tristate "MOXART watchdog"
 	depends on ARCH_MOXART
diff -Nur linux-3.18.10/drivers/watchdog/Makefile linux-rpi/drivers/watchdog/Makefile
--- linux-3.18.10/drivers/watchdog/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/drivers/watchdog/Makefile	2015-03-26 11:46:54.528238404 +0100
@@ -56,6 +56,7 @@
 obj-$(CONFIG_IMX2_WDT) += imx2_wdt.o
 obj-$(CONFIG_UX500_WATCHDOG) += ux500_wdt.o
 obj-$(CONFIG_RETU_WATCHDOG) += retu_wdt.o
+obj-$(CONFIG_BCM2708_WDT) += bcm2708_wdog.o
 obj-$(CONFIG_BCM2835_WDT) += bcm2835_wdt.o
 obj-$(CONFIG_MOXART_WDT) += moxart_wdt.o
 obj-$(CONFIG_SIRFSOC_WATCHDOG) += sirfsoc_wdt.o
diff -Nur linux-3.18.10/include/linux/broadcom/vc_cma.h linux-rpi/include/linux/broadcom/vc_cma.h
--- linux-3.18.10/include/linux/broadcom/vc_cma.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/include/linux/broadcom/vc_cma.h	2015-03-26 11:46:55.548239348 +0100
@@ -0,0 +1,29 @@
+/*****************************************************************************
+* Copyright 2012 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#if !defined( VC_CMA_H )
+#define VC_CMA_H
+
+#include <linux/ioctl.h>
+
+#define VC_CMA_IOC_MAGIC 0xc5
+
+#define VC_CMA_IOC_RESERVE _IO(VC_CMA_IOC_MAGIC, 0)
+
+#ifdef __KERNEL__
+extern void __init vc_cma_early_init(void);
+extern void __init vc_cma_reserve(void);
+#endif
+
+#endif /* VC_CMA_H */
diff -Nur linux-3.18.10/include/linux/mmc/host.h linux-rpi/include/linux/mmc/host.h
--- linux-3.18.10/include/linux/mmc/host.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/include/linux/mmc/host.h	2015-03-26 11:46:55.932239704 +0100
@@ -290,6 +290,7 @@
 #define MMC_CAP2_HS400		(MMC_CAP2_HS400_1_8V | \
 				 MMC_CAP2_HS400_1_2V)
 #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
+#define MMC_CAP2_FORCE_MULTIBLOCK (1 << 31)	/* Always use multiblock transfers */
 
 	mmc_pm_flag_t		pm_caps;	/* supported pm features */
 
diff -Nur linux-3.18.10/include/linux/mmc/sdhci.h linux-rpi/include/linux/mmc/sdhci.h
--- linux-3.18.10/include/linux/mmc/sdhci.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/include/linux/mmc/sdhci.h	2015-03-26 11:46:55.932239704 +0100
@@ -130,6 +130,7 @@
 #define SDHCI_SDIO_IRQ_ENABLED	(1<<9)	/* SDIO irq enabled */
 #define SDHCI_SDR104_NEEDS_TUNING (1<<10)	/* SDR104/HS200 needs tuning */
 #define SDHCI_USING_RETUNING_TIMER (1<<11)	/* Host is using a retuning timer for the card */
+#define SDHCI_USE_PLATDMA       (1<<12) /* Host uses 3rd party DMA */
 
 	unsigned int version;	/* SDHCI spec. version */
 
diff -Nur linux-3.18.10/include/linux/platform_data/bcm2708.h linux-rpi/include/linux/platform_data/bcm2708.h
--- linux-3.18.10/include/linux/platform_data/bcm2708.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/include/linux/platform_data/bcm2708.h	2015-03-26 11:46:56.020239783 +0100
@@ -0,0 +1,23 @@
+/*
+ * include/linux/platform_data/bcm2708.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * (C) 2014 Julian Scheel <julian@jusst.de>
+ *
+ */
+#ifndef __BCM2708_H_
+#define __BCM2708_H_
+
+typedef enum {
+	BCM2708_PULL_OFF,
+	BCM2708_PULL_UP,
+	BCM2708_PULL_DOWN
+} bcm2708_gpio_pull_t;
+
+extern int bcm2708_gpio_setpull(struct gpio_chip *gc, unsigned offset,
+		bcm2708_gpio_pull_t value);
+
+#endif
diff -Nur linux-3.18.10/include/linux/vmstat.h linux-rpi/include/linux/vmstat.h
--- linux-3.18.10/include/linux/vmstat.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/include/linux/vmstat.h	2015-03-26 11:46:56.512240241 +0100
@@ -241,7 +241,11 @@
 static inline void __dec_zone_state(struct zone *zone, enum zone_stat_item item)
 {
 	atomic_long_dec(&zone->vm_stat[item]);
+	if (item == NR_FILE_DIRTY && unlikely(atomic_long_read(&zone->vm_stat[item]) < 0))
+		atomic_long_set(&zone->vm_stat[item], 0);
 	atomic_long_dec(&vm_stat[item]);
+	if (item == NR_FILE_DIRTY && unlikely(atomic_long_read(&vm_stat[item]) < 0))
+		atomic_long_set(&vm_stat[item], 0);
 }
 
 static inline void __inc_zone_page_state(struct page *page,
diff -Nur linux-3.18.10/include/linux/w1-gpio.h linux-rpi/include/linux/w1-gpio.h
--- linux-3.18.10/include/linux/w1-gpio.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/include/linux/w1-gpio.h	2015-03-26 11:46:56.512240241 +0100
@@ -18,6 +18,7 @@
 struct w1_gpio_platform_data {
 	unsigned int pin;
 	unsigned int is_open_drain:1;
+	unsigned int parasitic_power:1;
 	void (*enable_external_pullup)(int enable);
 	unsigned int ext_pullup_enable_pin;
 	unsigned int pullup_duration;
diff -Nur linux-3.18.10/include/uapi/linux/fb.h linux-rpi/include/uapi/linux/fb.h
--- linux-3.18.10/include/uapi/linux/fb.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/include/uapi/linux/fb.h	2015-03-26 11:46:58.608242179 +0100
@@ -34,6 +34,11 @@
 #define FBIOPUT_MODEINFO        0x4617
 #define FBIOGET_DISPINFO        0x4618
 #define FBIO_WAITFORVSYNC	_IOW('F', 0x20, __u32)
+/*
+ * HACK: use 'z' in order not to clash with any other ioctl numbers which might
+ * be concurrently added to the mainline kernel
+ */
+#define FBIOCOPYAREA		_IOW('z', 0x21, struct fb_copyarea)
 
 #define FB_TYPE_PACKED_PIXELS		0	/* Packed Pixels	*/
 #define FB_TYPE_PLANES			1	/* Non interleaved planes */
diff -Nur linux-3.18.10/kernel/cgroup.c linux-rpi/kernel/cgroup.c
--- linux-3.18.10/kernel/cgroup.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/kernel/cgroup.c	2015-03-26 11:46:59.356242871 +0100
@@ -5322,6 +5322,29 @@
 }
 __setup("cgroup_disable=", cgroup_disable);
 
+static int __init cgroup_enable(char *str)
+{
+	struct cgroup_subsys *ss;
+	char *token;
+	int i;
+
+	while ((token = strsep(&str, ",")) != NULL) {
+		if (!*token)
+			continue;
+
+		for_each_subsys(ss, i) {
+			if (!strcmp(token, ss->name)) {
+				ss->disabled = 0;
+				printk(KERN_INFO "Enabling %s control group"
+					" subsystem\n", ss->name);
+				break;
+			}
+		}
+	}
+	return 1;
+}
+__setup("cgroup_enable=", cgroup_enable);
+
 static int __init cgroup_set_legacy_files_on_dfl(char *str)
 {
 	printk("cgroup: using legacy files on the default hierarchy\n");
diff -Nur linux-3.18.10/mm/memcontrol.c linux-rpi/mm/memcontrol.c
--- linux-3.18.10/mm/memcontrol.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/mm/memcontrol.c	2015-03-26 11:47:00.144243601 +0100
@@ -6207,6 +6207,7 @@
 	.bind = mem_cgroup_bind,
 	.legacy_cftypes = mem_cgroup_files,
 	.early_init = 0,
+	.disabled = 1,
 };
 
 #ifdef CONFIG_MEMCG_SWAP
diff -Nur linux-3.18.10/scripts/dtc/checks.c linux-rpi/scripts/dtc/checks.c
--- linux-3.18.10/scripts/dtc/checks.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/checks.c	2015-03-26 11:47:02.296245591 +0100
@@ -53,7 +53,7 @@
 	void *data;
 	bool warn, error;
 	enum checkstatus status;
-	int inprogress;
+	bool inprogress;
 	int num_prereqs;
 	struct check **prereq;
 };
@@ -113,6 +113,7 @@
 		vfprintf(stderr, fmt, ap);
 		fprintf(stderr, "\n");
 	}
+	va_end(ap);
 }
 
 #define FAIL(c, ...) \
@@ -141,9 +142,9 @@
 		check_nodes_props(c, dt, child);
 }
 
-static int run_check(struct check *c, struct node *dt)
+static bool run_check(struct check *c, struct node *dt)
 {
-	int error = 0;
+	bool error = false;
 	int i;
 
 	assert(!c->inprogress);
@@ -151,11 +152,11 @@
 	if (c->status != UNCHECKED)
 		goto out;
 
-	c->inprogress = 1;
+	c->inprogress = true;
 
 	for (i = 0; i < c->num_prereqs; i++) {
 		struct check *prq = c->prereq[i];
-		error |= run_check(prq, dt);
+		error = error || run_check(prq, dt);
 		if (prq->status != PASSED) {
 			c->status = PREREQ;
 			check_msg(c, "Failed prerequisite '%s'",
@@ -177,9 +178,9 @@
 	TRACE(c, "\tCompleted, status %d", c->status);
 
 out:
-	c->inprogress = 0;
+	c->inprogress = false;
 	if ((c->status != PASSED) && (c->error))
-		error = 1;
+		error = true;
 	return error;
 }
 
@@ -457,22 +458,93 @@
 				     struct node *node, struct property *prop)
 {
 	struct marker *m = prop->val.markers;
+	struct fixup *f, **fp;
+	struct fixup_entry *fe, **fep;
 	struct node *refnode;
 	cell_t phandle;
+	int has_phandle_refs;
+
+	has_phandle_refs = 0;
+	for_each_marker_of_type(m, REF_PHANDLE) {
+		has_phandle_refs = 1;
+		break;
+	}
+
+	if (!has_phandle_refs)
+		return;
 
 	for_each_marker_of_type(m, REF_PHANDLE) {
 		assert(m->offset + sizeof(cell_t) <= prop->val.len);
 
 		refnode = get_node_by_ref(dt, m->ref);
-		if (! refnode) {
+		if (!refnode && !symbol_fixup_support) {
 			FAIL(c, "Reference to non-existent node or label \"%s\"\n",
-			     m->ref);
+				m->ref);
 			continue;
 		}
 
-		phandle = get_node_phandle(dt, refnode);
-		*((cell_t *)(prop->val.val + m->offset)) = cpu_to_fdt32(phandle);
+		if (!refnode) {
+			/* allocate fixup entry */
+			fe = xmalloc(sizeof(*fe));
+
+			fe->node = node;
+			fe->prop = prop;
+			fe->offset = m->offset;
+			fe->next = NULL;
+
+			/* search for an already existing fixup */
+			for_each_fixup(dt, f)
+				if (strcmp(f->ref, m->ref) == 0)
+					break;
+
+			/* no fixup found, add new */
+			if (f == NULL) {
+				f = xmalloc(sizeof(*f));
+				f->ref = m->ref;
+				f->entries = NULL;
+				f->next = NULL;
+
+				/* add it to the tree */
+				fp = &dt->fixups;
+				while (*fp)
+					fp = &(*fp)->next;
+				*fp = f;
+			}
+
+			/* and now append fixup entry */
+			fep = &f->entries;
+			while (*fep)
+				fep = &(*fep)->next;
+			*fep = fe;
+
+			/* mark the entry as unresolved */
+			phandle = 0xdeadbeef;
+		} else {
+			phandle = get_node_phandle(dt, refnode);
+
+			/* if it's a plugin, we need to record it */
+			if (symbol_fixup_support && dt->is_plugin) {
+
+				/* allocate a new local fixup entry */
+				fe = xmalloc(sizeof(*fe));
+
+				fe->node = node;
+				fe->prop = prop;
+				fe->offset = m->offset;
+				fe->next = NULL;
+
+				/* append it to the local fixups */
+				fep = &dt->local_fixups;
+				while (*fep)
+					fep = &(*fep)->next;
+				*fep = fe;
+			}
+		}
+
+		*((cell_t *)(prop->val.val + m->offset)) =
+			cpu_to_fdt32(phandle);
 	}
+
 }
 ERROR(phandle_references, NULL, NULL, fixup_phandle_references, NULL,
       &duplicate_node_names, &explicit_phandles);
@@ -624,11 +696,11 @@
 	if (!reg && !ranges)
 		return;
 
-	if ((node->parent->addr_cells == -1))
+	if (node->parent->addr_cells == -1)
 		FAIL(c, "Relying on default #address-cells value for %s",
 		     node->fullpath);
 
-	if ((node->parent->size_cells == -1))
+	if (node->parent->size_cells == -1)
 		FAIL(c, "Relying on default #size-cells value for %s",
 		     node->fullpath);
 }
@@ -651,6 +723,45 @@
 }
 TREE_WARNING(obsolete_chosen_interrupt_controller, NULL);
 
+static void check_auto_label_phandles(struct check *c, struct node *dt,
+				       struct node *node)
+{
+	struct label *l;
+	struct symbol *s, **sp;
+	int has_label;
+
+	if (!symbol_fixup_support)
+		return;
+
+	has_label = 0;
+	for_each_label(node->labels, l) {
+		has_label = 1;
+		break;
+	}
+
+	if (!has_label)
+		return;
+
+	/* force allocation of a phandle for this node */
+	(void)get_node_phandle(dt, node);
+
+	/* add the symbol */
+	for_each_label(node->labels, l) {
+
+		s = xmalloc(sizeof(*s));
+		s->label = l;
+		s->node = node;
+		s->next = NULL;
+
+		/* add it to the symbols list */
+		sp = &dt->symbols;
+		while (*sp)
+			sp = &((*sp)->next);
+		*sp = s;
+	}
+}
+NODE_WARNING(auto_label_phandles, NULL);
+
 static struct check *check_table[] = {
 	&duplicate_node_names, &duplicate_property_names,
 	&node_name_chars, &node_name_format, &property_name_chars,
@@ -669,6 +780,8 @@
 	&avoid_default_addr_size,
 	&obsolete_chosen_interrupt_controller,
 
+	&auto_label_phandles,
+
 	&always_fail,
 };
 
@@ -706,15 +819,15 @@
 	c->error = c->error && !error;
 }
 
-void parse_checks_option(bool warn, bool error, const char *optarg)
+void parse_checks_option(bool warn, bool error, const char *arg)
 {
 	int i;
-	const char *name = optarg;
+	const char *name = arg;
 	bool enable = true;
 
-	if ((strncmp(optarg, "no-", 3) == 0)
-	    || (strncmp(optarg, "no_", 3) == 0)) {
-		name = optarg + 3;
+	if ((strncmp(arg, "no-", 3) == 0)
+	    || (strncmp(arg, "no_", 3) == 0)) {
+		name = arg + 3;
 		enable = false;
 	}
 
@@ -733,7 +846,7 @@
 	die("Unrecognized check name \"%s\"\n", name);
 }
 
-void process_checks(int force, struct boot_info *bi)
+void process_checks(bool force, struct boot_info *bi)
 {
 	struct node *dt = bi->dt;
 	int i;
diff -Nur linux-3.18.10/scripts/dtc/data.c linux-rpi/scripts/dtc/data.c
--- linux-3.18.10/scripts/dtc/data.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/data.c	2015-03-26 11:47:02.296245591 +0100
@@ -74,7 +74,7 @@
 	struct data d;
 	char *q;
 
-	d = data_grow_for(empty_data, strlen(s)+1);
+	d = data_grow_for(empty_data, len + 1);
 
 	q = d.val;
 	while (i < len) {
@@ -250,20 +250,20 @@
 	return data_append_markers(d, m);
 }
 
-int data_is_one_string(struct data d)
+bool data_is_one_string(struct data d)
 {
 	int i;
 	int len = d.len;
 
 	if (len == 0)
-		return 0;
+		return false;
 
 	for (i = 0; i < len-1; i++)
 		if (d.val[i] == '\0')
-			return 0;
+			return false;
 
 	if (d.val[len-1] != '\0')
-		return 0;
+		return false;
 
-	return 1;
+	return true;
 }
diff -Nur linux-3.18.10/scripts/dtc/dtc.c linux-rpi/scripts/dtc/dtc.c
--- linux-3.18.10/scripts/dtc/dtc.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/dtc.c	2015-03-26 11:47:02.296245591 +0100
@@ -29,6 +29,7 @@
 int minsize;		/* Minimum blob size */
 int padsize;		/* Additional padding to blob */
 int phandle_format = PHANDLE_BOTH;	/* Use linux,phandle or phandle properties */
+int symbol_fixup_support = 0;
 
 static void fill_fullpaths(struct node *tree, const char *prefix)
 {
@@ -48,8 +49,10 @@
 }
 
 /* Usage related data. */
+#define FDT_VERSION(version)	_FDT_VERSION(version)
+#define _FDT_VERSION(version)	#version
 static const char usage_synopsis[] = "dtc [options] <input file>";
-static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv";
+static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv@";
 static struct option const usage_long_opts[] = {
 	{"quiet",            no_argument, NULL, 'q'},
 	{"in-format",         a_argument, NULL, 'I'},
@@ -67,6 +70,7 @@
 	{"phandle",           a_argument, NULL, 'H'},
 	{"warning",           a_argument, NULL, 'W'},
 	{"error",             a_argument, NULL, 'E'},
+	{"symbols",           a_argument, NULL, '@'},
 	{"help",             no_argument, NULL, 'h'},
 	{"version",          no_argument, NULL, 'v'},
 	{NULL,               no_argument, NULL, 0x0},
@@ -82,9 +86,9 @@
 	 "\t\tdts - device tree source text\n"
 	 "\t\tdtb - device tree blob\n"
 	 "\t\tasm - assembler source",
-	"\n\tBlob version to produce, defaults to %d (for dtb and asm output)", //, DEFAULT_FDT_VERSION);
+	"\n\tBlob version to produce, defaults to "FDT_VERSION(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
 	"\n\tOutput dependency file",
-	"\n\ttMake space for <number> reserve map entries (for dtb and asm output)",
+	"\n\tMake space for <number> reserve map entries (for dtb and asm output)",
 	"\n\tMake the blob at least <bytes> long (extra space)",
 	"\n\tAdd padding to the blob of <bytes> long (extra space)",
 	"\n\tSet the physical boot cpu",
@@ -97,6 +101,7 @@
 	 "\t\tboth   - Both \"linux,phandle\" and \"phandle\" properties",
 	"\n\tEnable/disable warnings (prefix with \"no-\")",
 	"\n\tEnable/disable errors (prefix with \"no-\")",
+	"\n\tSymbols and Fixups support",
 	"\n\tPrint this help and exit",
 	"\n\tPrint version and exit",
 	NULL,
@@ -109,7 +114,7 @@
 	const char *outform = "dts";
 	const char *outname = "-";
 	const char *depname = NULL;
-	int force = 0, sort = 0;
+	bool force = false, sort = false;
 	const char *arg;
 	int opt;
 	FILE *outf = NULL;
@@ -148,7 +153,7 @@
 			padsize = strtol(optarg, NULL, 0);
 			break;
 		case 'f':
-			force = 1;
+			force = true;
 			break;
 		case 'q':
 			quiet++;
@@ -174,7 +179,7 @@
 			break;
 
 		case 's':
-			sort = 1;
+			sort = true;
 			break;
 
 		case 'W':
@@ -184,7 +189,9 @@
 		case 'E':
 			parse_checks_option(false, true, optarg);
 			break;
-
+		case '@':
+			symbol_fixup_support = 1;
+			break;
 		case 'h':
 			usage(NULL);
 		default:
@@ -237,7 +244,7 @@
 	if (streq(outname, "-")) {
 		outf = stdout;
 	} else {
-		outf = fopen(outname, "w");
+		outf = fopen(outname, "wb");
 		if (! outf)
 			die("Couldn't open output file %s: %s\n",
 			    outname, strerror(errno));
diff -Nur linux-3.18.10/scripts/dtc/dtc.h linux-rpi/scripts/dtc/dtc.h
--- linux-3.18.10/scripts/dtc/dtc.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/dtc.h	2015-03-26 11:47:02.296245591 +0100
@@ -38,9 +38,9 @@
 #include "util.h"
 
 #ifdef DEBUG
-#define debug(fmt,args...)	printf(fmt, ##args)
+#define debug(...)	printf(__VA_ARGS__)
 #else
-#define debug(fmt,args...)
+#define debug(...)
 #endif
 
 
@@ -54,6 +54,7 @@
 extern int minsize;		/* Minimum blob size */
 extern int padsize;		/* Additional padding to blob */
 extern int phandle_format;	/* Use linux,phandle or phandle properties */
+extern int symbol_fixup_support;/* enable symbols & fixup support */
 
 #define PHANDLE_LEGACY	0x1
 #define PHANDLE_EPAPR	0x2
@@ -88,7 +89,7 @@
 };
 
 
-#define empty_data ((struct data){ /* all .members = 0 or NULL */ })
+#define empty_data ((struct data){ 0 /* all .members = 0 or NULL */ })
 
 #define for_each_marker(m) \
 	for (; (m); (m) = (m)->next)
@@ -118,7 +119,7 @@
 
 struct data data_add_marker(struct data d, enum markertype type, char *ref);
 
-int data_is_one_string(struct data d);
+bool data_is_one_string(struct data d);
 
 /* DT constraints */
 
@@ -127,13 +128,32 @@
 
 /* Live trees */
 struct label {
-	int deleted;
+	bool deleted;
 	char *label;
 	struct label *next;
 };
 
+struct fixup_entry {
+	int offset;
+	struct node *node;
+	struct property *prop;
+	struct fixup_entry *next;
+};
+
+struct fixup {
+	char *ref;
+	struct fixup_entry *entries;
+	struct fixup *next;
+};
+
+struct symbol {
+	struct label *label;
+	struct node *node;
+	struct symbol *next;
+};
+
 struct property {
-	int deleted;
+	bool deleted;
 	char *name;
 	struct data val;
 
@@ -143,7 +163,7 @@
 };
 
 struct node {
-	int deleted;
+	bool deleted;
 	char *name;
 	struct property *proplist;
 	struct node *children;
@@ -158,6 +178,12 @@
 	int addr_cells, size_cells;
 
 	struct label *labels;
+
+	int is_root;
+	int is_plugin;
+	struct fixup *fixups;
+	struct symbol *symbols;
+	struct fixup_entry *local_fixups;
 };
 
 #define for_each_label_withdel(l0, l) \
@@ -181,6 +207,18 @@
 	for_each_child_withdel(n, c) \
 		if (!(c)->deleted)
 
+#define for_each_fixup(n, f) \
+	for ((f) = (n)->fixups; (f); (f) = (f)->next)
+
+#define for_each_fixup_entry(f, fe) \
+	for ((fe) = (f)->entries; (fe); (fe) = (fe)->next)
+
+#define for_each_symbol(n, s) \
+	for ((s) = (n)->symbols; (s); (s) = (s)->next)
+
+#define for_each_local_fixup_entry(n, fe) \
+	for ((fe) = (n)->local_fixups; (fe); (fe) = (fe)->next)
+
 void add_label(struct label **labels, char *label);
 void delete_labels(struct label **labels);
 
@@ -247,8 +285,8 @@
 
 /* Checks */
 
-void parse_checks_option(bool warn, bool error, const char *optarg);
-void process_checks(int force, struct boot_info *bi);
+void parse_checks_option(bool warn, bool error, const char *arg);
+void process_checks(bool force, struct boot_info *bi);
 
 /* Flattened trees */
 
diff -Nur linux-3.18.10/scripts/dtc/dtc-lexer.l linux-rpi/scripts/dtc/dtc-lexer.l
--- linux-3.18.10/scripts/dtc/dtc-lexer.l	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/dtc-lexer.l	2015-03-26 11:47:02.296245591 +0100
@@ -20,7 +20,6 @@
 
 %option noyywrap nounput noinput never-interactive
 
-%x INCLUDE
 %x BYTESTRING
 %x PROPNODENAME
 %s V1
@@ -40,6 +39,7 @@
 #include "dtc-parser.tab.h"
 
 YYLTYPE yylloc;
+extern bool treesource_error;
 
 /* CAUTION: this will stop working if we ever use yyless() or yyunput() */
 #define	YY_USER_ACTION \
@@ -61,7 +61,8 @@
 				BEGIN(V1); \
 
 static void push_input_file(const char *filename);
-static int pop_input_file(void);
+static bool pop_input_file(void);
+static void lexical_error(const char *fmt, ...);
 %}
 
 %%
@@ -75,11 +76,11 @@
 			char *line, *tmp, *fn;
 			/* skip text before line # */
 			line = yytext;
-			while (!isdigit(*line))
+			while (!isdigit((unsigned char)*line))
 				line++;
 			/* skip digits in line # */
 			tmp = line;
-			while (!isspace(*tmp))
+			while (!isspace((unsigned char)*tmp))
 				tmp++;
 			/* "NULL"-terminate line # */
 			*tmp = '\0';
@@ -112,6 +113,11 @@
 			return DT_V1;
 		}
 
+<*>"/plugin/"	{
+			DPRINT("Keyword: /plugin/\n");
+			return DT_PLUGIN;
+		}
+
 <*>"/memreserve/"	{
 			DPRINT("Keyword: /memreserve/\n");
 			BEGIN_DEFAULT();
@@ -146,15 +152,42 @@
 		}
 
 <V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? {
-			yylval.literal = xstrdup(yytext);
-			DPRINT("Literal: '%s'\n", yylval.literal);
+			char *e;
+			DPRINT("Integer Literal: '%s'\n", yytext);
+
+			errno = 0;
+			yylval.integer = strtoull(yytext, &e, 0);
+
+			assert(!(*e) || !e[strspn(e, "UL")]);
+
+			if (errno == ERANGE)
+				lexical_error("Integer literal '%s' out of range",
+					      yytext);
+			else
+				/* ERANGE is the only strtoull error triggerable
+				 *  by strings matching the pattern */
+				assert(errno == 0);
 			return DT_LITERAL;
 		}
 
 <*>{CHAR_LITERAL}	{
-			yytext[yyleng-1] = '\0';
-			yylval.literal = xstrdup(yytext+1);
-			DPRINT("Character literal: %s\n", yylval.literal);
+			struct data d;
+			DPRINT("Character literal: %s\n", yytext);
+
+			d = data_copy_escape_string(yytext+1, yyleng-2);
+			if (d.len == 1) {
+				lexical_error("Empty character literal");
+				yylval.integer = 0;
+				return DT_CHAR_LITERAL;
+			}
+
+			yylval.integer = (unsigned char)d.val[0];
+
+			if (d.len > 2)
+				lexical_error("Character literal has %d"
+					      " characters instead of 1",
+					      d.len - 1);
+
 			return DT_CHAR_LITERAL;
 		}
 
@@ -164,7 +197,7 @@
 			return DT_REF;
 		}
 
-<*>"&{/"{PATHCHAR}+\}	{	/* new-style path reference */
+<*>"&{/"{PATHCHAR}*\}	{	/* new-style path reference */
 			yytext[yyleng-1] = '\0';
 			DPRINT("Ref: %s\n", yytext+2);
 			yylval.labelref = xstrdup(yytext+2);
@@ -238,13 +271,24 @@
 }
 
 
-static int pop_input_file(void)
+static bool pop_input_file(void)
 {
 	if (srcfile_pop() == 0)
-		return 0;
+		return false;
 
 	yypop_buffer_state();
 	yyin = current_srcfile->f;
 
-	return 1;
+	return true;
+}
+
+static void lexical_error(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	srcpos_verror(&yylloc, "Lexical error", fmt, ap);
+	va_end(ap);
+
+	treesource_error = true;
 }
diff -Nur linux-3.18.10/scripts/dtc/dtc-lexer.lex.c_shipped linux-rpi/scripts/dtc/dtc-lexer.lex.c_shipped
--- linux-3.18.10/scripts/dtc/dtc-lexer.lex.c_shipped	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/dtc-lexer.lex.c_shipped	2015-03-26 11:47:02.296245591 +0100
@@ -372,8 +372,8 @@
 	*yy_cp = '\0'; \
 	(yy_c_buf_p) = yy_cp;
 
-#define YY_NUM_RULES 30
-#define YY_END_OF_BUFFER 31
+#define YY_NUM_RULES 31
+#define YY_END_OF_BUFFER 32
 /* This struct is not used in this scanner,
    but its presence is necessary. */
 struct yy_trans_info
@@ -381,25 +381,26 @@
 	flex_int32_t yy_verify;
 	flex_int32_t yy_nxt;
 	};
-static yyconst flex_int16_t yy_accept[161] =
+static yyconst flex_int16_t yy_accept[166] =
     {   0,
+        0,    0,    0,    0,    0,    0,    0,    0,   32,   30,
+       19,   19,   30,   30,   30,   30,   30,   30,   30,   30,
+       30,   30,   30,   30,   30,   30,   16,   17,   17,   30,
+       17,   11,   11,   19,   27,    0,    3,    0,   28,   13,
+        0,    0,   12,    0,    0,    0,    0,    0,    0,    0,
+        0,   22,   24,   26,   25,   23,    0,   10,   29,    0,
+        0,    0,   15,   15,   17,   17,   17,   11,   11,   11,
+        0,   13,    0,   12,    0,    0,    0,   21,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,   17,   11,   11,
+       11,    0,   14,   20,    0,    0,    0,    0,    0,    0,
+
+        0,    0,    0,    0,   17,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    0,   17,    7,    0,    0,    0,
+        0,    0,    0,    0,    2,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    4,   18,    0,    0,    5,    2,
         0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-       31,   29,   18,   18,   29,   29,   29,   29,   29,   29,
-       29,   29,   29,   29,   29,   29,   29,   29,   15,   16,
-       16,   29,   16,   10,   10,   18,   26,    0,    3,    0,
-       27,   12,    0,    0,   11,    0,    0,    0,    0,    0,
-        0,    0,   21,   23,   25,   24,   22,    0,    9,   28,
-        0,    0,    0,   14,   14,   16,   16,   16,   10,   10,
-       10,    0,   12,    0,   11,    0,    0,    0,   20,    0,
-        0,    0,    0,    0,    0,    0,    0,   16,   10,   10,
-       10,    0,   19,    0,    0,    0,    0,    0,    0,    0,
-
-        0,    0,   16,   13,    0,    0,    0,    0,    0,    0,
-        0,    0,    0,   16,    6,    0,    0,    0,    0,    0,
-        0,    2,    0,    0,    0,    0,    0,    0,    0,    0,
-        4,   17,    0,    0,    2,    0,    0,    0,    0,    0,
-        0,    0,    0,    0,    0,    0,    0,    1,    0,    0,
-        0,    0,    5,    8,    0,    0,    0,    0,    7,    0
+        0,    0,    1,    0,    0,    0,    0,    6,    9,    0,
+        0,    0,    0,    8,    0
     } ;
 
 static yyconst flex_int32_t yy_ec[256] =
@@ -415,9 +416,9 @@
        22,   22,   22,   22,   24,   22,   22,   25,   22,   22,
         1,   26,   27,    1,   22,    1,   21,   28,   29,   30,
 
-       31,   21,   22,   22,   32,   22,   22,   33,   34,   35,
-       36,   37,   22,   38,   39,   40,   41,   42,   22,   25,
-       43,   22,   44,   45,   46,    1,    1,    1,    1,    1,
+       31,   21,   32,   22,   33,   22,   22,   34,   35,   36,
+       37,   38,   22,   39,   40,   41,   42,   43,   22,   25,
+       44,   22,   45,   46,   47,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
@@ -434,163 +435,165 @@
         1,    1,    1,    1,    1
     } ;
 
-static yyconst flex_int32_t yy_meta[47] =
+static yyconst flex_int32_t yy_meta[48] =
     {   0,
         1,    1,    1,    1,    1,    1,    2,    3,    1,    2,
         2,    2,    4,    5,    5,    5,    6,    1,    1,    1,
         7,    8,    8,    8,    8,    1,    1,    7,    7,    7,
         7,    8,    8,    8,    8,    8,    8,    8,    8,    8,
-        8,    8,    8,    3,    1,    1
+        8,    8,    8,    8,    3,    1,    4
     } ;
 
-static yyconst flex_int16_t yy_base[175] =
+static yyconst flex_int16_t yy_base[180] =
     {   0,
-        0,  385,  378,   40,   41,  383,   72,  382,   34,   44,
-      388,  393,   61,  117,  368,  116,  115,  115,  115,   48,
-      367,  107,  368,  339,  127,  120,    0,  147,  393,    0,
-      127,    0,  133,  156,  168,  153,  393,  125,  393,  380,
-      393,    0,  369,  127,  393,  160,  371,  377,  347,   21,
-      343,  346,  393,  393,  393,  393,  393,  359,  393,  393,
-      183,  343,  339,  393,  356,    0,  183,  340,  187,  348,
-      347,    0,    0,    0,  178,  359,  195,  365,  354,  326,
-      332,  325,  334,  328,  204,  326,  331,  324,  393,  335,
-      150,  311,  343,  342,  315,  322,  340,  179,  313,  207,
-
-      319,  316,  317,  393,  337,  333,  305,  302,  311,  301,
-      310,  190,  338,  337,  393,  307,  322,  301,  305,  277,
-      208,  311,  307,  278,  271,  270,  248,  246,  213,  130,
-      393,  393,  263,  235,  207,  221,  218,  229,  213,  213,
-      206,  234,  218,  210,  208,  193,  219,  393,  223,  204,
-      176,  157,  393,  393,  120,  106,   97,  119,  393,  393,
-      245,  251,  259,  263,  267,  273,  280,  284,  292,  300,
-      304,  310,  318,  326
+        0,  393,   35,  392,   66,  391,   38,  107,  397,  401,
+       55,  113,  377,  112,  111,  111,  114,   42,  376,  106,
+      377,  347,  126,  120,    0,  147,  401,    0,  124,    0,
+      137,  158,  170,  163,  401,  153,  401,  389,  401,    0,
+      378,  120,  401,  131,  380,  386,  355,  139,  351,  355,
+      351,  401,  401,  401,  401,  401,  367,  401,  401,  185,
+      350,  346,  401,  364,    0,  185,  347,  189,  356,  355,
+        0,    0,  330,  180,  366,  141,  372,  361,  332,  338,
+      331,  341,  334,  326,  205,  331,  337,  329,  401,  341,
+      167,  316,  401,  349,  348,  320,  328,  346,  180,  318,
+
+      324,  209,  324,  320,  322,  342,  338,  309,  306,  315,
+      305,  315,  312,  192,  342,  341,  401,  293,  306,  282,
+      268,  252,  255,  203,  285,  282,  272,  268,  252,  233,
+      232,  239,  208,  107,  401,  401,  238,  211,  401,  211,
+      212,  208,  228,  203,  215,  207,  233,  222,  212,  211,
+      203,  227,  401,  237,  225,  204,  185,  401,  401,  149,
+      128,   88,   42,  401,  401,  253,  259,  267,  271,  275,
+      281,  288,  292,  300,  308,  312,  318,  326,  334
     } ;
 
-static yyconst flex_int16_t yy_def[175] =
+static yyconst flex_int16_t yy_def[180] =
     {   0,
-      160,    1,    1,    1,    1,    5,  160,    7,    1,    1,
-      160,  160,  160,  160,  160,  161,  162,  163,  160,  160,
-      160,  160,  164,  160,  160,  160,  165,  164,  160,  166,
-      167,  166,  166,  160,  160,  160,  160,  161,  160,  161,
-      160,  168,  160,  163,  160,  163,  169,  170,  160,  160,
-      160,  160,  160,  160,  160,  160,  160,  164,  160,  160,
-      160,  160,  160,  160,  164,  166,  167,  166,  160,  160,
-      160,  171,  168,  172,  163,  169,  169,  170,  160,  160,
-      160,  160,  160,  160,  160,  160,  160,  166,  160,  160,
-      171,  172,  160,  160,  160,  160,  160,  160,  160,  160,
-
-      160,  160,  166,  160,  160,  160,  160,  160,  160,  160,
-      160,  173,  160,  166,  160,  160,  160,  160,  160,  160,
-      173,  160,  173,  160,  160,  160,  160,  160,  160,  160,
-      160,  160,  160,  160,  160,  160,  160,  160,  160,  160,
-      160,  160,  174,  160,  160,  160,  174,  160,  174,  160,
-      160,  160,  160,  160,  160,  160,  160,  160,  160,    0,
-      160,  160,  160,  160,  160,  160,  160,  160,  160,  160,
-      160,  160,  160,  160
+      165,    1,    1,    3,  165,    5,    1,    1,  165,  165,
+      165,  165,  165,  166,  167,  168,  165,  165,  165,  165,
+      169,  165,  165,  165,  170,  169,  165,  171,  172,  171,
+      171,  165,  165,  165,  165,  166,  165,  166,  165,  173,
+      165,  168,  165,  168,  174,  175,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  169,  165,  165,  165,
+      165,  165,  165,  169,  171,  172,  171,  165,  165,  165,
+      176,  173,  177,  168,  174,  174,  175,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  171,  165,  165,
+      176,  177,  165,  165,  165,  165,  165,  165,  165,  165,
+
+      165,  165,  165,  165,  171,  165,  165,  165,  165,  165,
+      165,  165,  165,  178,  165,  171,  165,  165,  165,  165,
+      165,  165,  165,  178,  165,  178,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  179,  165,  165,
+      165,  179,  165,  179,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,    0,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165
     } ;
 
-static yyconst flex_int16_t yy_nxt[440] =
+static yyconst flex_int16_t yy_nxt[449] =
     {   0,
-       12,   13,   14,   13,   15,   16,   12,   17,   18,   12,
-       12,   12,   19,   12,   12,   12,   12,   20,   21,   22,
-       23,   23,   23,   23,   23,   12,   12,   23,   23,   23,
-       23,   23,   23,   23,   23,   23,   23,   23,   23,   23,
-       23,   23,   23,   12,   24,   12,   25,   34,   35,   35,
-       25,   81,   26,   26,   27,   27,   27,   34,   35,   35,
-       82,   28,   36,   36,   36,   53,   54,   29,   28,   28,
-       28,   28,   12,   13,   14,   13,   15,   16,   30,   17,
-       18,   30,   30,   30,   26,   30,   30,   30,   12,   20,
-       21,   22,   31,   31,   31,   31,   31,   32,   12,   31,
-
-       31,   31,   31,   31,   31,   31,   31,   31,   31,   31,
-       31,   31,   31,   31,   31,   12,   24,   12,   36,   36,
-       36,   39,   41,   45,   47,   56,   57,   48,   61,   47,
-       39,  159,   48,   66,   61,   45,   66,   66,   66,  158,
-       46,   40,   49,   59,   50,  157,   51,   49,   52,   50,
-       40,   63,   46,   52,   36,   36,   36,  156,   43,   62,
-       65,   65,   65,   59,  136,   68,  137,   65,   75,   69,
-       69,   69,   70,   71,   65,   65,   65,   65,   70,   71,
-       72,   69,   69,   69,   61,   46,   45,  155,  154,   66,
-       70,   71,   66,   66,   66,  122,   85,   85,   85,   59,
-
-       69,   69,   69,   46,   77,  100,  109,   93,  100,   70,
-       71,  110,  112,  122,  129,  123,  153,   85,   85,   85,
-      135,  135,  135,  148,  148,  160,  135,  135,  135,  152,
-      142,  142,  142,  123,  143,  142,  142,  142,  151,  143,
-      150,  146,  145,  149,  149,   38,   38,   38,   38,   38,
-       38,   38,   38,   42,  144,  141,  140,   42,   42,   44,
-       44,   44,   44,   44,   44,   44,   44,   58,   58,   58,
-       58,   64,  139,   64,   66,  138,  134,   66,  133,   66,
-       66,   67,  132,  131,   67,   67,   67,   67,   73,  130,
-       73,   73,   76,   76,   76,   76,   76,   76,   76,   76,
-
-       78,   78,   78,   78,   78,   78,   78,   78,   91,  160,
-       91,   92,  129,   92,   92,  128,   92,   92,  121,  121,
-      121,  121,  121,  121,  121,  121,  147,  147,  147,  147,
-      147,  147,  147,  147,  127,  126,  125,  124,   61,   61,
-      120,  119,  118,  117,  116,  115,   47,  114,  110,  113,
-      111,  108,  107,  106,   48,  105,  104,   89,  103,  102,
-      101,   99,   98,   97,   96,   95,   94,   79,   77,   90,
-       89,   88,   59,   87,   86,   59,   84,   83,   80,   79,
-       77,   74,  160,   60,   59,   55,   37,  160,   33,   25,
-       26,   25,   11,  160,  160,  160,  160,  160,  160,  160,
-
-      160,  160,  160,  160,  160,  160,  160,  160,  160,  160,
-      160,  160,  160,  160,  160,  160,  160,  160,  160,  160,
-      160,  160,  160,  160,  160,  160,  160,  160,  160,  160,
-      160,  160,  160,  160,  160,  160,  160,  160,  160
+       10,   11,   12,   11,   13,   14,   10,   15,   16,   10,
+       10,   10,   17,   10,   10,   10,   10,   18,   19,   20,
+       21,   21,   21,   21,   21,   10,   10,   21,   21,   21,
+       21,   21,   21,   21,   21,   21,   21,   21,   21,   21,
+       21,   21,   21,   21,   10,   22,   10,   24,   25,   25,
+       25,   32,   33,   33,  164,   26,   34,   34,   34,   52,
+       53,   27,   26,   26,   26,   26,   10,   11,   12,   11,
+       13,   14,   28,   15,   16,   28,   28,   28,   24,   28,
+       28,   28,   10,   18,   19,   20,   29,   29,   29,   29,
+       29,   30,   10,   29,   29,   29,   29,   29,   29,   29,
+
+       29,   29,   29,   29,   29,   29,   29,   29,   29,   29,
+       10,   22,   10,   23,   34,   34,   34,   37,   39,   43,
+       32,   33,   33,   45,   55,   56,   46,   60,   43,   45,
+       65,  163,   46,   65,   65,   65,   44,   38,   60,   74,
+       58,   47,  141,   48,  142,   44,   49,   47,   50,   48,
+       76,   51,   62,   94,   50,   41,   44,   51,   37,   61,
+       64,   64,   64,   58,   34,   34,   34,   64,  162,   80,
+       67,   68,   68,   68,   64,   64,   64,   64,   38,   81,
+       69,   70,   71,   68,   68,   68,   60,  161,   43,   69,
+       70,   65,   69,   70,   65,   65,   65,  125,   85,   85,
+
+       85,   58,   68,   68,   68,   44,  102,  110,  125,  133,
+      102,   69,   70,  111,  114,  160,  159,  126,   85,   85,
+       85,  140,  140,  140,  140,  140,  140,  153,  126,  147,
+      147,  147,  153,  148,  147,  147,  147,  158,  148,  165,
+      157,  156,  155,  151,  150,  149,  146,  154,  145,  144,
+      143,  139,  154,   36,   36,   36,   36,   36,   36,   36,
+       36,   40,  138,  137,  136,   40,   40,   42,   42,   42,
+       42,   42,   42,   42,   42,   57,   57,   57,   57,   63,
+      135,   63,   65,  134,  165,   65,  133,   65,   65,   66,
+      132,  131,   66,   66,   66,   66,   72,  130,   72,   72,
+
+       75,   75,   75,   75,   75,   75,   75,   75,   77,   77,
+       77,   77,   77,   77,   77,   77,   91,  129,   91,   92,
+      128,   92,   92,  127,   92,   92,  124,  124,  124,  124,
+      124,  124,  124,  124,  152,  152,  152,  152,  152,  152,
+      152,  152,   60,   60,  123,  122,  121,  120,  119,  118,
+      117,   45,  116,  111,  115,  113,  112,  109,  108,  107,
+       46,  106,   93,   89,  105,  104,  103,  101,  100,   99,
+       98,   97,   96,   95,   78,   76,   93,   90,   89,   88,
+       58,   87,   86,   58,   84,   83,   82,   79,   78,   76,
+       73,  165,   59,   58,   54,   35,  165,   31,   23,   23,
+
+        9,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165
     } ;
 
-static yyconst flex_int16_t yy_chk[440] =
+static yyconst flex_int16_t yy_chk[449] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
-        1,    1,    1,    1,    1,    1,    4,    9,    9,    9,
-       10,   50,    4,    5,    5,    5,    5,   10,   10,   10,
-       50,    5,   13,   13,   13,   20,   20,    5,    5,    5,
-        5,    5,    7,    7,    7,    7,    7,    7,    7,    7,
-        7,    7,    7,    7,    7,    7,    7,    7,    7,    7,
-        7,    7,    7,    7,    7,    7,    7,    7,    7,    7,
-
-        7,    7,    7,    7,    7,    7,    7,    7,    7,    7,
-        7,    7,    7,    7,    7,    7,    7,    7,   14,   14,
-       14,   16,   17,   18,   19,   22,   22,   19,   25,   26,
-       38,  158,   26,   31,   33,   44,   31,   31,   31,  157,
-       18,   16,   19,   31,   19,  156,   19,   26,   19,   26,
-       38,   26,   44,   26,   36,   36,   36,  155,   17,   25,
-       28,   28,   28,   28,  130,   33,  130,   28,   46,   34,
-       34,   34,   91,   91,   28,   28,   28,   28,   34,   34,
-       34,   35,   35,   35,   61,   46,   75,  152,  151,   67,
-       35,   35,   67,   67,   67,  112,   61,   61,   61,   67,
-
-       69,   69,   69,   75,   77,   85,   98,   77,  100,   69,
-       69,   98,  100,  121,  129,  112,  150,   85,   85,   85,
-      135,  135,  135,  143,  147,  149,  129,  129,  129,  146,
-      138,  138,  138,  121,  138,  142,  142,  142,  145,  142,
-      144,  141,  140,  143,  147,  161,  161,  161,  161,  161,
-      161,  161,  161,  162,  139,  137,  136,  162,  162,  163,
-      163,  163,  163,  163,  163,  163,  163,  164,  164,  164,
-      164,  165,  134,  165,  166,  133,  128,  166,  127,  166,
-      166,  167,  126,  125,  167,  167,  167,  167,  168,  124,
-      168,  168,  169,  169,  169,  169,  169,  169,  169,  169,
-
-      170,  170,  170,  170,  170,  170,  170,  170,  171,  123,
-      171,  172,  122,  172,  172,  120,  172,  172,  173,  173,
-      173,  173,  173,  173,  173,  173,  174,  174,  174,  174,
-      174,  174,  174,  174,  119,  118,  117,  116,  114,  113,
-      111,  110,  109,  108,  107,  106,  105,  103,  102,  101,
-       99,   97,   96,   95,   94,   93,   92,   90,   88,   87,
-       86,   84,   83,   82,   81,   80,   79,   78,   76,   71,
-       70,   68,   65,   63,   62,   58,   52,   51,   49,   48,
-       47,   43,   40,   24,   23,   21,   15,   11,    8,    6,
-        3,    2,  160,  160,  160,  160,  160,  160,  160,  160,
-
-      160,  160,  160,  160,  160,  160,  160,  160,  160,  160,
-      160,  160,  160,  160,  160,  160,  160,  160,  160,  160,
-      160,  160,  160,  160,  160,  160,  160,  160,  160,  160,
-      160,  160,  160,  160,  160,  160,  160,  160,  160
+        1,    1,    1,    1,    1,    1,    1,    3,    3,    3,
+        3,    7,    7,    7,  163,    3,   11,   11,   11,   18,
+       18,    3,    3,    3,    3,    3,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    8,   12,   12,   12,   14,   15,   16,
+        8,    8,    8,   17,   20,   20,   17,   23,   42,   24,
+       29,  162,   24,   29,   29,   29,   16,   14,   31,   44,
+       29,   17,  134,   17,  134,   42,   17,   24,   17,   24,
+       76,   17,   24,   76,   24,   15,   44,   24,   36,   23,
+       26,   26,   26,   26,   34,   34,   34,   26,  161,   48,
+       31,   32,   32,   32,   26,   26,   26,   26,   36,   48,
+       32,   32,   32,   33,   33,   33,   60,  160,   74,   91,
+       91,   66,   33,   33,   66,   66,   66,  114,   60,   60,
+
+       60,   66,   68,   68,   68,   74,   85,   99,  124,  133,
+      102,   68,   68,   99,  102,  157,  156,  114,   85,   85,
+       85,  133,  133,  133,  140,  140,  140,  148,  124,  143,
+      143,  143,  152,  143,  147,  147,  147,  155,  147,  154,
+      151,  150,  149,  146,  145,  144,  142,  148,  141,  138,
+      137,  132,  152,  166,  166,  166,  166,  166,  166,  166,
+      166,  167,  131,  130,  129,  167,  167,  168,  168,  168,
+      168,  168,  168,  168,  168,  169,  169,  169,  169,  170,
+      128,  170,  171,  127,  126,  171,  125,  171,  171,  172,
+      123,  122,  172,  172,  172,  172,  173,  121,  173,  173,
+
+      174,  174,  174,  174,  174,  174,  174,  174,  175,  175,
+      175,  175,  175,  175,  175,  175,  176,  120,  176,  177,
+      119,  177,  177,  118,  177,  177,  178,  178,  178,  178,
+      178,  178,  178,  178,  179,  179,  179,  179,  179,  179,
+      179,  179,  116,  115,  113,  112,  111,  110,  109,  108,
+      107,  106,  105,  104,  103,  101,  100,   98,   97,   96,
+       95,   94,   92,   90,   88,   87,   86,   84,   83,   82,
+       81,   80,   79,   78,   77,   75,   73,   70,   69,   67,
+       64,   62,   61,   57,   51,   50,   49,   47,   46,   45,
+       41,   38,   22,   21,   19,   13,    9,    6,    4,    2,
+
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165
     } ;
 
 static yy_state_type yy_last_accepting_state;
@@ -631,13 +634,13 @@
 
 
 
-
-#line 38 "dtc-lexer.l"
+#line 37 "dtc-lexer.l"
 #include "dtc.h"
 #include "srcpos.h"
 #include "dtc-parser.tab.h"
 
 YYLTYPE yylloc;
+extern bool treesource_error;
 
 /* CAUTION: this will stop working if we ever use yyless() or yyunput() */
 #define	YY_USER_ACTION \
@@ -659,14 +662,14 @@
 				BEGIN(V1); \
 
 static void push_input_file(const char *filename);
-static int pop_input_file(void);
-#line 664 "dtc-lexer.lex.c"
+static bool pop_input_file(void);
+static void lexical_error(const char *fmt, ...);
+#line 668 "dtc-lexer.lex.c"
 
 #define INITIAL 0
-#define INCLUDE 1
-#define BYTESTRING 2
-#define PROPNODENAME 3
-#define V1 4
+#define BYTESTRING 1
+#define PROPNODENAME 2
+#define V1 3
 
 #ifndef YY_NO_UNISTD_H
 /* Special case for "unistd.h", since it is non-ANSI. We include it way
@@ -852,9 +855,9 @@
 	register char *yy_cp, *yy_bp;
 	register int yy_act;
     
-#line 67 "dtc-lexer.l"
+#line 68 "dtc-lexer.l"
 
-#line 858 "dtc-lexer.lex.c"
+#line 861 "dtc-lexer.lex.c"
 
 	if ( !(yy_init) )
 		{
@@ -908,13 +911,13 @@
 			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 				{
 				yy_current_state = (int) yy_def[yy_current_state];
-				if ( yy_current_state >= 161 )
+				if ( yy_current_state >= 166 )
 					yy_c = yy_meta[(unsigned int) yy_c];
 				}
 			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
 			++yy_cp;
 			}
-		while ( yy_current_state != 160 );
+		while ( yy_current_state != 165 );
 		yy_cp = (yy_last_accepting_cpos);
 		yy_current_state = (yy_last_accepting_state);
 
@@ -937,7 +940,7 @@
 case 1:
 /* rule 1 can match eol */
 YY_RULE_SETUP
-#line 68 "dtc-lexer.l"
+#line 69 "dtc-lexer.l"
 {
 			char *name = strchr(yytext, '\"') + 1;
 			yytext[yyleng-1] = '\0';
@@ -947,16 +950,16 @@
 case 2:
 /* rule 2 can match eol */
 YY_RULE_SETUP
-#line 74 "dtc-lexer.l"
+#line 75 "dtc-lexer.l"
 {
 			char *line, *tmp, *fn;
 			/* skip text before line # */
 			line = yytext;
-			while (!isdigit(*line))
+			while (!isdigit((unsigned char)*line))
 				line++;
 			/* skip digits in line # */
 			tmp = line;
-			while (!isspace(*tmp))
+			while (!isspace((unsigned char)*tmp))
 				tmp++;
 			/* "NULL"-terminate line # */
 			*tmp = '\0';
@@ -970,11 +973,10 @@
 		}
 	YY_BREAK
 case YY_STATE_EOF(INITIAL):
-case YY_STATE_EOF(INCLUDE):
 case YY_STATE_EOF(BYTESTRING):
 case YY_STATE_EOF(PROPNODENAME):
 case YY_STATE_EOF(V1):
-#line 95 "dtc-lexer.l"
+#line 96 "dtc-lexer.l"
 {
 			if (!pop_input_file()) {
 				yyterminate();
@@ -984,7 +986,7 @@
 case 3:
 /* rule 3 can match eol */
 YY_RULE_SETUP
-#line 101 "dtc-lexer.l"
+#line 102 "dtc-lexer.l"
 {
 			DPRINT("String: %s\n", yytext);
 			yylval.data = data_copy_escape_string(yytext+1,
@@ -994,7 +996,7 @@
 	YY_BREAK
 case 4:
 YY_RULE_SETUP
-#line 108 "dtc-lexer.l"
+#line 109 "dtc-lexer.l"
 {
 			DPRINT("Keyword: /dts-v1/\n");
 			dts_version = 1;
@@ -1004,25 +1006,33 @@
 	YY_BREAK
 case 5:
 YY_RULE_SETUP
-#line 115 "dtc-lexer.l"
+#line 116 "dtc-lexer.l"
+{
+			DPRINT("Keyword: /plugin/\n");
+			return DT_PLUGIN;
+		}
+	YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 121 "dtc-lexer.l"
 {
 			DPRINT("Keyword: /memreserve/\n");
 			BEGIN_DEFAULT();
 			return DT_MEMRESERVE;
 		}
 	YY_BREAK
-case 6:
+case 7:
 YY_RULE_SETUP
-#line 121 "dtc-lexer.l"
+#line 127 "dtc-lexer.l"
 {
 			DPRINT("Keyword: /bits/\n");
 			BEGIN_DEFAULT();
 			return DT_BITS;
 		}
 	YY_BREAK
-case 7:
+case 8:
 YY_RULE_SETUP
-#line 127 "dtc-lexer.l"
+#line 133 "dtc-lexer.l"
 {
 			DPRINT("Keyword: /delete-property/\n");
 			DPRINT("<PROPNODENAME>\n");
@@ -1030,9 +1040,9 @@
 			return DT_DEL_PROP;
 		}
 	YY_BREAK
-case 8:
+case 9:
 YY_RULE_SETUP
-#line 134 "dtc-lexer.l"
+#line 140 "dtc-lexer.l"
 {
 			DPRINT("Keyword: /delete-node/\n");
 			DPRINT("<PROPNODENAME>\n");
@@ -1040,9 +1050,9 @@
 			return DT_DEL_NODE;
 		}
 	YY_BREAK
-case 9:
+case 10:
 YY_RULE_SETUP
-#line 141 "dtc-lexer.l"
+#line 147 "dtc-lexer.l"
 {
 			DPRINT("Label: %s\n", yytext);
 			yylval.labelref = xstrdup(yytext);
@@ -1050,38 +1060,65 @@
 			return DT_LABEL;
 		}
 	YY_BREAK
-case 10:
+case 11:
 YY_RULE_SETUP
-#line 148 "dtc-lexer.l"
+#line 154 "dtc-lexer.l"
 {
-			yylval.literal = xstrdup(yytext);
-			DPRINT("Literal: '%s'\n", yylval.literal);
+			char *e;
+			DPRINT("Integer Literal: '%s'\n", yytext);
+
+			errno = 0;
+			yylval.integer = strtoull(yytext, &e, 0);
+
+			assert(!(*e) || !e[strspn(e, "UL")]);
+
+			if (errno == ERANGE)
+				lexical_error("Integer literal '%s' out of range",
+					      yytext);
+			else
+				/* ERANGE is the only strtoull error triggerable
+				 *  by strings matching the pattern */
+				assert(errno == 0);
 			return DT_LITERAL;
 		}
 	YY_BREAK
-case 11:
-/* rule 11 can match eol */
+case 12:
+/* rule 12 can match eol */
 YY_RULE_SETUP
-#line 154 "dtc-lexer.l"
+#line 173 "dtc-lexer.l"
 {
-			yytext[yyleng-1] = '\0';
-			yylval.literal = xstrdup(yytext+1);
-			DPRINT("Character literal: %s\n", yylval.literal);
+			struct data d;
+			DPRINT("Character literal: %s\n", yytext);
+
+			d = data_copy_escape_string(yytext+1, yyleng-2);
+			if (d.len == 1) {
+				lexical_error("Empty character literal");
+				yylval.integer = 0;
+				return DT_CHAR_LITERAL;
+			}
+
+			yylval.integer = (unsigned char)d.val[0];
+
+			if (d.len > 2)
+				lexical_error("Character literal has %d"
+					      " characters instead of 1",
+					      d.len - 1);
+
 			return DT_CHAR_LITERAL;
 		}
 	YY_BREAK
-case 12:
+case 13:
 YY_RULE_SETUP
-#line 161 "dtc-lexer.l"
+#line 194 "dtc-lexer.l"
 {	/* label reference */
 			DPRINT("Ref: %s\n", yytext+1);
 			yylval.labelref = xstrdup(yytext+1);
 			return DT_REF;
 		}
 	YY_BREAK
-case 13:
+case 14:
 YY_RULE_SETUP
-#line 167 "dtc-lexer.l"
+#line 200 "dtc-lexer.l"
 {	/* new-style path reference */
 			yytext[yyleng-1] = '\0';
 			DPRINT("Ref: %s\n", yytext+2);
@@ -1089,27 +1126,27 @@
 			return DT_REF;
 		}
 	YY_BREAK
-case 14:
+case 15:
 YY_RULE_SETUP
-#line 174 "dtc-lexer.l"
+#line 207 "dtc-lexer.l"
 {
 			yylval.byte = strtol(yytext, NULL, 16);
 			DPRINT("Byte: %02x\n", (int)yylval.byte);
 			return DT_BYTE;
 		}
 	YY_BREAK
-case 15:
+case 16:
 YY_RULE_SETUP
-#line 180 "dtc-lexer.l"
+#line 213 "dtc-lexer.l"
 {
 			DPRINT("/BYTESTRING\n");
 			BEGIN_DEFAULT();
 			return ']';
 		}
 	YY_BREAK
-case 16:
+case 17:
 YY_RULE_SETUP
-#line 186 "dtc-lexer.l"
+#line 219 "dtc-lexer.l"
 {
 			DPRINT("PropNodeName: %s\n", yytext);
 			yylval.propnodename = xstrdup((yytext[0] == '\\') ?
@@ -1118,75 +1155,75 @@
 			return DT_PROPNODENAME;
 		}
 	YY_BREAK
-case 17:
+case 18:
 YY_RULE_SETUP
-#line 194 "dtc-lexer.l"
+#line 227 "dtc-lexer.l"
 {
 			DPRINT("Binary Include\n");
 			return DT_INCBIN;
 		}
 	YY_BREAK
-case 18:
-/* rule 18 can match eol */
-YY_RULE_SETUP
-#line 199 "dtc-lexer.l"
-/* eat whitespace */
-	YY_BREAK
 case 19:
 /* rule 19 can match eol */
 YY_RULE_SETUP
-#line 200 "dtc-lexer.l"
-/* eat C-style comments */
+#line 232 "dtc-lexer.l"
+/* eat whitespace */
 	YY_BREAK
 case 20:
 /* rule 20 can match eol */
 YY_RULE_SETUP
-#line 201 "dtc-lexer.l"
-/* eat C++-style comments */
+#line 233 "dtc-lexer.l"
+/* eat C-style comments */
 	YY_BREAK
 case 21:
+/* rule 21 can match eol */
 YY_RULE_SETUP
-#line 203 "dtc-lexer.l"
-{ return DT_LSHIFT; };
+#line 234 "dtc-lexer.l"
+/* eat C++-style comments */
 	YY_BREAK
 case 22:
 YY_RULE_SETUP
-#line 204 "dtc-lexer.l"
-{ return DT_RSHIFT; };
+#line 236 "dtc-lexer.l"
+{ return DT_LSHIFT; };
 	YY_BREAK
 case 23:
 YY_RULE_SETUP
-#line 205 "dtc-lexer.l"
-{ return DT_LE; };
+#line 237 "dtc-lexer.l"
+{ return DT_RSHIFT; };
 	YY_BREAK
 case 24:
 YY_RULE_SETUP
-#line 206 "dtc-lexer.l"
-{ return DT_GE; };
+#line 238 "dtc-lexer.l"
+{ return DT_LE; };
 	YY_BREAK
 case 25:
 YY_RULE_SETUP
-#line 207 "dtc-lexer.l"
-{ return DT_EQ; };
+#line 239 "dtc-lexer.l"
+{ return DT_GE; };
 	YY_BREAK
 case 26:
 YY_RULE_SETUP
-#line 208 "dtc-lexer.l"
-{ return DT_NE; };
+#line 240 "dtc-lexer.l"
+{ return DT_EQ; };
 	YY_BREAK
 case 27:
 YY_RULE_SETUP
-#line 209 "dtc-lexer.l"
-{ return DT_AND; };
+#line 241 "dtc-lexer.l"
+{ return DT_NE; };
 	YY_BREAK
 case 28:
 YY_RULE_SETUP
-#line 210 "dtc-lexer.l"
-{ return DT_OR; };
+#line 242 "dtc-lexer.l"
+{ return DT_AND; };
 	YY_BREAK
 case 29:
 YY_RULE_SETUP
-#line 212 "dtc-lexer.l"
+#line 243 "dtc-lexer.l"
+{ return DT_OR; };
+	YY_BREAK
+case 30:
+YY_RULE_SETUP
+#line 245 "dtc-lexer.l"
 {
 			DPRINT("Char: %c (\\x%02x)\n", yytext[0],
 				(unsigned)yytext[0]);
@@ -1202,12 +1239,12 @@
 			return yytext[0];
 		}
 	YY_BREAK
-case 30:
+case 31:
 YY_RULE_SETUP
-#line 227 "dtc-lexer.l"
+#line 260 "dtc-lexer.l"
 ECHO;
 	YY_BREAK
-#line 1211 "dtc-lexer.lex.c"
+#line 1248 "dtc-lexer.lex.c"
 
 	case YY_END_OF_BUFFER:
 		{
@@ -1499,7 +1536,7 @@
 		while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 			{
 			yy_current_state = (int) yy_def[yy_current_state];
-			if ( yy_current_state >= 161 )
+			if ( yy_current_state >= 166 )
 				yy_c = yy_meta[(unsigned int) yy_c];
 			}
 		yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
@@ -1527,11 +1564,11 @@
 	while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 		{
 		yy_current_state = (int) yy_def[yy_current_state];
-		if ( yy_current_state >= 161 )
+		if ( yy_current_state >= 166 )
 			yy_c = yy_meta[(unsigned int) yy_c];
 		}
 	yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
-	yy_is_jam = (yy_current_state == 160);
+	yy_is_jam = (yy_current_state == 165);
 
 	return yy_is_jam ? 0 : yy_current_state;
 }
@@ -2166,7 +2203,7 @@
 
 #define YYTABLES_NAME "yytables"
 
-#line 227 "dtc-lexer.l"
+#line 260 "dtc-lexer.l"
 
 
 
@@ -2182,14 +2219,25 @@
 }
 
 
-static int pop_input_file(void)
+static bool pop_input_file(void)
 {
 	if (srcfile_pop() == 0)
-		return 0;
+		return false;
 
 	yypop_buffer_state();
 	yyin = current_srcfile->f;
 
-	return 1;
+	return true;
+}
+
+static void lexical_error(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	srcpos_verror(&yylloc, "Lexical error", fmt, ap);
+	va_end(ap);
+
+	treesource_error = true;
 }
 
diff -Nur linux-3.18.10/scripts/dtc/dtc-parser.tab.c_shipped linux-rpi/scripts/dtc/dtc-parser.tab.c_shipped
--- linux-3.18.10/scripts/dtc/dtc-parser.tab.c_shipped	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/dtc-parser.tab.c_shipped	2015-03-26 11:47:02.296245591 +0100
@@ -1,19 +1,19 @@
-/* A Bison parser, made by GNU Bison 2.7.12-4996.  */
+/* A Bison parser, made by GNU Bison 3.0.2.  */
 
 /* Bison implementation for Yacc-like parsers in C
-   
-      Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, Inc.
-   
+
+   Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, Inc.
+
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
-   
+
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
-   
+
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
@@ -26,7 +26,7 @@
    special exception, which will cause the skeleton and the resulting
    Bison output files to be licensed under the GNU General Public
    License without this special exception.
-   
+
    This special exception was added by the Free Software Foundation in
    version 2.2 of Bison.  */
 
@@ -44,7 +44,7 @@
 #define YYBISON 1
 
 /* Bison version.  */
-#define YYBISON_VERSION "2.7.12-4996"
+#define YYBISON_VERSION "3.0.2"
 
 /* Skeleton name.  */
 #define YYSKELETON_NAME "yacc.c"
@@ -62,34 +62,32 @@
 
 
 /* Copy the first part of user declarations.  */
-/* Line 371 of yacc.c  */
-#line 21 "dtc-parser.y"
+#line 20 "dtc-parser.y" /* yacc.c:339  */
 
 #include <stdio.h>
+#include <inttypes.h>
 
 #include "dtc.h"
 #include "srcpos.h"
 
-YYLTYPE yylloc;
-
 extern int yylex(void);
-extern void print_error(char const *fmt, ...);
 extern void yyerror(char const *s);
+#define ERROR(loc, ...) \
+	do { \
+		srcpos_error((loc), "Error", __VA_ARGS__); \
+		treesource_error = true; \
+	} while (0)
 
 extern struct boot_info *the_boot_info;
-extern int treesource_error;
-
-static unsigned long long eval_literal(const char *s, int base, int bits);
-static unsigned char eval_char_literal(const char *s);
+extern bool treesource_error;
 
-/* Line 371 of yacc.c  */
-#line 87 "dtc-parser.tab.c"
+#line 85 "dtc-parser.tab.c" /* yacc.c:339  */
 
-# ifndef YY_NULL
+# ifndef YY_NULLPTR
 #  if defined __cplusplus && 201103L <= __cplusplus
-#   define YY_NULL nullptr
+#   define YY_NULLPTR nullptr
 #  else
-#   define YY_NULL 0
+#   define YY_NULLPTR 0
 #  endif
 # endif
 
@@ -105,7 +103,7 @@
    by #include "dtc-parser.tab.h".  */
 #ifndef YY_YY_DTC_PARSER_TAB_H_INCLUDED
 # define YY_YY_DTC_PARSER_TAB_H_INCLUDED
-/* Enabling traces.  */
+/* Debug traces.  */
 #ifndef YYDEBUG
 # define YYDEBUG 0
 #endif
@@ -113,48 +111,45 @@
 extern int yydebug;
 #endif
 
-/* Tokens.  */
+/* Token type.  */
 #ifndef YYTOKENTYPE
 # define YYTOKENTYPE
-   /* Put the tokens into the symbol table, so that GDB and other debuggers
-      know about them.  */
-   enum yytokentype {
-     DT_V1 = 258,
-     DT_MEMRESERVE = 259,
-     DT_LSHIFT = 260,
-     DT_RSHIFT = 261,
-     DT_LE = 262,
-     DT_GE = 263,
-     DT_EQ = 264,
-     DT_NE = 265,
-     DT_AND = 266,
-     DT_OR = 267,
-     DT_BITS = 268,
-     DT_DEL_PROP = 269,
-     DT_DEL_NODE = 270,
-     DT_PROPNODENAME = 271,
-     DT_LITERAL = 272,
-     DT_CHAR_LITERAL = 273,
-     DT_BASE = 274,
-     DT_BYTE = 275,
-     DT_STRING = 276,
-     DT_LABEL = 277,
-     DT_REF = 278,
-     DT_INCBIN = 279
-   };
+  enum yytokentype
+  {
+    DT_V1 = 258,
+    DT_PLUGIN = 259,
+    DT_MEMRESERVE = 260,
+    DT_LSHIFT = 261,
+    DT_RSHIFT = 262,
+    DT_LE = 263,
+    DT_GE = 264,
+    DT_EQ = 265,
+    DT_NE = 266,
+    DT_AND = 267,
+    DT_OR = 268,
+    DT_BITS = 269,
+    DT_DEL_PROP = 270,
+    DT_DEL_NODE = 271,
+    DT_PROPNODENAME = 272,
+    DT_LITERAL = 273,
+    DT_CHAR_LITERAL = 274,
+    DT_BYTE = 275,
+    DT_STRING = 276,
+    DT_LABEL = 277,
+    DT_REF = 278,
+    DT_INCBIN = 279
+  };
 #endif
 
-
+/* Value type.  */
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-typedef union YYSTYPE
+typedef union YYSTYPE YYSTYPE;
+union YYSTYPE
 {
-/* Line 387 of yacc.c  */
-#line 40 "dtc-parser.y"
+#line 39 "dtc-parser.y" /* yacc.c:355  */
 
 	char *propnodename;
-	char *literal;
 	char *labelref;
-	unsigned int cbase;
 	uint8_t byte;
 	struct data data;
 
@@ -169,38 +164,38 @@
 	struct node *nodelist;
 	struct reserve_info *re;
 	uint64_t integer;
+	int is_plugin;
 
-
-/* Line 387 of yacc.c  */
-#line 176 "dtc-parser.tab.c"
-} YYSTYPE;
+#line 170 "dtc-parser.tab.c" /* yacc.c:355  */
+};
 # define YYSTYPE_IS_TRIVIAL 1
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
 # define YYSTYPE_IS_DECLARED 1
 #endif
 
-extern YYSTYPE yylval;
-
-#ifdef YYPARSE_PARAM
-#if defined __STDC__ || defined __cplusplus
-int yyparse (void *YYPARSE_PARAM);
-#else
-int yyparse ();
+/* Location type.  */
+#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
+typedef struct YYLTYPE YYLTYPE;
+struct YYLTYPE
+{
+  int first_line;
+  int first_column;
+  int last_line;
+  int last_column;
+};
+# define YYLTYPE_IS_DECLARED 1
+# define YYLTYPE_IS_TRIVIAL 1
 #endif
-#else /* ! YYPARSE_PARAM */
-#if defined __STDC__ || defined __cplusplus
+
+
+extern YYSTYPE yylval;
+extern YYLTYPE yylloc;
 int yyparse (void);
-#else
-int yyparse ();
-#endif
-#endif /* ! YYPARSE_PARAM */
 
 #endif /* !YY_YY_DTC_PARSER_TAB_H_INCLUDED  */
 
 /* Copy the second part of user declarations.  */
 
-/* Line 390 of yacc.c  */
-#line 204 "dtc-parser.tab.c"
+#line 199 "dtc-parser.tab.c" /* yacc.c:358  */
 
 #ifdef short
 # undef short
@@ -214,11 +209,8 @@
 
 #ifdef YYTYPE_INT8
 typedef YYTYPE_INT8 yytype_int8;
-#elif (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-typedef signed char yytype_int8;
 #else
-typedef short int yytype_int8;
+typedef signed char yytype_int8;
 #endif
 
 #ifdef YYTYPE_UINT16
@@ -238,8 +230,7 @@
 #  define YYSIZE_T __SIZE_TYPE__
 # elif defined size_t
 #  define YYSIZE_T size_t
-# elif ! defined YYSIZE_T && (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
+# elif ! defined YYSIZE_T
 #  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
 #  define YYSIZE_T size_t
 # else
@@ -261,11 +252,30 @@
 # endif
 #endif
 
-#ifndef __attribute__
-/* This feature is available in gcc versions 2.5 and later.  */
-# if (! defined __GNUC__ || __GNUC__ < 2 \
-      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
-#  define __attribute__(Spec) /* empty */
+#ifndef YY_ATTRIBUTE
+# if (defined __GNUC__                                               \
+      && (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)))  \
+     || defined __SUNPRO_C && 0x5110 <= __SUNPRO_C
+#  define YY_ATTRIBUTE(Spec) __attribute__(Spec)
+# else
+#  define YY_ATTRIBUTE(Spec) /* empty */
+# endif
+#endif
+
+#ifndef YY_ATTRIBUTE_PURE
+# define YY_ATTRIBUTE_PURE   YY_ATTRIBUTE ((__pure__))
+#endif
+
+#ifndef YY_ATTRIBUTE_UNUSED
+# define YY_ATTRIBUTE_UNUSED YY_ATTRIBUTE ((__unused__))
+#endif
+
+#if !defined _Noreturn \
+     && (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112)
+# if defined _MSC_VER && 1200 <= _MSC_VER
+#  define _Noreturn __declspec (noreturn)
+# else
+#  define _Noreturn YY_ATTRIBUTE ((__noreturn__))
 # endif
 #endif
 
@@ -276,24 +286,25 @@
 # define YYUSE(E) /* empty */
 #endif
 
-
-/* Identity function, used to suppress warnings about constant conditions.  */
-#ifndef lint
-# define YYID(N) (N)
-#else
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-static int
-YYID (int yyi)
+#if defined __GNUC__ && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
+/* Suppress an incorrect diagnostic about yylval being uninitialized.  */
+# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
+    _Pragma ("GCC diagnostic push") \
+    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
+    _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END \
+    _Pragma ("GCC diagnostic pop")
 #else
-static int
-YYID (yyi)
-    int yyi;
+# define YY_INITIAL_VALUE(Value) Value
 #endif
-{
-  return yyi;
-}
+#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END
 #endif
+#ifndef YY_INITIAL_VALUE
+# define YY_INITIAL_VALUE(Value) /* Nothing. */
+#endif
+
 
 #if ! defined yyoverflow || YYERROR_VERBOSE
 
@@ -312,8 +323,7 @@
 #    define alloca _alloca
 #   else
 #    define YYSTACK_ALLOC alloca
-#    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
+#    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS
 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
       /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
 #     ifndef EXIT_SUCCESS
@@ -325,8 +335,8 @@
 # endif
 
 # ifdef YYSTACK_ALLOC
-   /* Pacify GCC's `empty if-body' warning.  */
-#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
+   /* Pacify GCC's 'empty if-body' warning.  */
+#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
 #  ifndef YYSTACK_ALLOC_MAXIMUM
     /* The OS might guarantee only one guard page at the bottom of the stack,
        and a page size can be as small as 4096 bytes.  So we cannot safely
@@ -342,7 +352,7 @@
 #  endif
 #  if (defined __cplusplus && ! defined EXIT_SUCCESS \
        && ! ((defined YYMALLOC || defined malloc) \
-	     && (defined YYFREE || defined free)))
+             && (defined YYFREE || defined free)))
 #   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 #   ifndef EXIT_SUCCESS
 #    define EXIT_SUCCESS 0
@@ -350,15 +360,13 @@
 #  endif
 #  ifndef YYMALLOC
 #   define YYMALLOC malloc
-#   if ! defined malloc && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
+#   if ! defined malloc && ! defined EXIT_SUCCESS
 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif
 #  ifndef YYFREE
 #   define YYFREE free
-#   if ! defined free && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
+#   if ! defined free && ! defined EXIT_SUCCESS
 void free (void *); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif
@@ -368,13 +376,15 @@
 
 #if (! defined yyoverflow \
      && (! defined __cplusplus \
-	 || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
+         || (defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
+             && defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
 
 /* A type that is properly aligned for any stack member.  */
 union yyalloc
 {
   yytype_int16 yyss_alloc;
   YYSTYPE yyvs_alloc;
+  YYLTYPE yyls_alloc;
 };
 
 /* The size of the maximum gap between one aligned stack and the next.  */
@@ -383,8 +393,8 @@
 /* The size of an array large to enough to hold all stacks, each with
    N elements.  */
 # define YYSTACK_BYTES(N) \
-     ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
-      + YYSTACK_GAP_MAXIMUM)
+     ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
+      + 2 * YYSTACK_GAP_MAXIMUM)
 
 # define YYCOPY_NEEDED 1
 
@@ -393,16 +403,16 @@
    elements in the stack, and YYPTR gives the new location of the
    stack.  Advance YYPTR to a properly aligned location for the next
    stack.  */
-# define YYSTACK_RELOCATE(Stack_alloc, Stack)				\
-    do									\
-      {									\
-	YYSIZE_T yynewbytes;						\
-	YYCOPY (&yyptr->Stack_alloc, Stack, yysize);			\
-	Stack = &yyptr->Stack_alloc;					\
-	yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
-	yyptr += yynewbytes / sizeof (*yyptr);				\
-      }									\
-    while (YYID (0))
+# define YYSTACK_RELOCATE(Stack_alloc, Stack)                           \
+    do                                                                  \
+      {                                                                 \
+        YYSIZE_T yynewbytes;                                            \
+        YYCOPY (&yyptr->Stack_alloc, Stack, yysize);                    \
+        Stack = &yyptr->Stack_alloc;                                    \
+        yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
+        yyptr += yynewbytes / sizeof (*yyptr);                          \
+      }                                                                 \
+    while (0)
 
 #endif
 
@@ -421,7 +431,7 @@
           for (yyi = 0; yyi < (Count); yyi++)   \
             (Dst)[yyi] = (Src)[yyi];            \
         }                                       \
-      while (YYID (0))
+      while (0)
 #  endif
 # endif
 #endif /* !YYCOPY_NEEDED */
@@ -429,25 +439,27 @@
 /* YYFINAL -- State number of the termination state.  */
 #define YYFINAL  4
 /* YYLAST -- Last index in YYTABLE.  */
-#define YYLAST   133
+#define YYLAST   135
 
 /* YYNTOKENS -- Number of terminals.  */
 #define YYNTOKENS  48
 /* YYNNTS -- Number of nonterminals.  */
-#define YYNNTS  28
+#define YYNNTS  29
 /* YYNRULES -- Number of rules.  */
-#define YYNRULES  79
-/* YYNRULES -- Number of states.  */
-#define YYNSTATES  141
+#define YYNRULES  81
+/* YYNSTATES -- Number of states.  */
+#define YYNSTATES  144
 
-/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
+/* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
+   by yylex, with out-of-bounds checking.  */
 #define YYUNDEFTOK  2
 #define YYMAXUTOK   279
 
-#define YYTRANSLATE(YYX)						\
+#define YYTRANSLATE(YYX)                                                \
   ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
 
-/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
+/* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
+   as returned by yylex, without out-of-bounds checking.  */
 static const yytype_uint8 yytranslate[] =
 {
        0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
@@ -481,63 +493,18 @@
 };
 
 #if YYDEBUG
-/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
-   YYRHS.  */
-static const yytype_uint16 yyprhs[] =
-{
-       0,     0,     3,     8,     9,    12,    17,    20,    23,    27,
-      31,    36,    42,    43,    46,    51,    54,    58,    61,    64,
-      68,    73,    76,    86,    92,    95,    96,    99,   102,   106,
-     108,   111,   114,   117,   119,   121,   125,   127,   129,   135,
-     137,   141,   143,   147,   149,   153,   155,   159,   161,   165,
-     167,   171,   175,   177,   181,   185,   189,   193,   197,   201,
-     203,   207,   211,   213,   217,   221,   225,   227,   229,   232,
-     235,   238,   239,   242,   245,   246,   249,   252,   255,   259
-};
-
-/* YYRHS -- A `-1'-separated list of the rules' RHS.  */
-static const yytype_int8 yyrhs[] =
-{
-      49,     0,    -1,     3,    25,    50,    52,    -1,    -1,    51,
-      50,    -1,     4,    59,    59,    25,    -1,    22,    51,    -1,
-      26,    53,    -1,    52,    26,    53,    -1,    52,    23,    53,
-      -1,    52,    15,    23,    25,    -1,    27,    54,    74,    28,
-      25,    -1,    -1,    54,    55,    -1,    16,    29,    56,    25,
-      -1,    16,    25,    -1,    14,    16,    25,    -1,    22,    55,
-      -1,    57,    21,    -1,    57,    58,    30,    -1,    57,    31,
-      73,    32,    -1,    57,    23,    -1,    57,    24,    33,    21,
-      34,    59,    34,    59,    35,    -1,    57,    24,    33,    21,
-      35,    -1,    56,    22,    -1,    -1,    56,    34,    -1,    57,
-      22,    -1,    13,    17,    36,    -1,    36,    -1,    58,    59,
-      -1,    58,    23,    -1,    58,    22,    -1,    17,    -1,    18,
-      -1,    33,    60,    35,    -1,    61,    -1,    62,    -1,    62,
-      37,    60,    38,    61,    -1,    63,    -1,    62,    12,    63,
-      -1,    64,    -1,    63,    11,    64,    -1,    65,    -1,    64,
-      39,    65,    -1,    66,    -1,    65,    40,    66,    -1,    67,
-      -1,    66,    41,    67,    -1,    68,    -1,    67,     9,    68,
-      -1,    67,    10,    68,    -1,    69,    -1,    68,    36,    69,
-      -1,    68,    30,    69,    -1,    68,     7,    69,    -1,    68,
-       8,    69,    -1,    69,     5,    70,    -1,    69,     6,    70,
-      -1,    70,    -1,    70,    42,    71,    -1,    70,    43,    71,
-      -1,    71,    -1,    71,    44,    72,    -1,    71,    26,    72,
-      -1,    71,    45,    72,    -1,    72,    -1,    59,    -1,    43,
-      72,    -1,    46,    72,    -1,    47,    72,    -1,    -1,    73,
-      20,    -1,    73,    22,    -1,    -1,    75,    74,    -1,    75,
-      55,    -1,    16,    53,    -1,    15,    16,    25,    -1,    22,
-      75,    -1
-};
-
-/* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
+  /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
 static const yytype_uint16 yyrline[] =
 {
-       0,   109,   109,   118,   121,   128,   132,   140,   144,   148,
-     158,   172,   180,   183,   190,   194,   198,   202,   210,   214,
-     218,   222,   226,   243,   253,   261,   264,   268,   275,   290,
-     295,   315,   329,   336,   340,   344,   351,   355,   356,   360,
-     361,   365,   366,   370,   371,   375,   376,   380,   381,   385,
-     386,   387,   391,   392,   393,   394,   395,   399,   400,   401,
-     405,   406,   407,   411,   412,   413,   414,   418,   419,   420,
-     421,   426,   429,   433,   441,   444,   448,   456,   460,   464
+       0,   108,   108,   119,   122,   130,   133,   140,   144,   152,
+     156,   160,   170,   185,   193,   196,   203,   207,   211,   215,
+     223,   227,   231,   235,   239,   255,   265,   273,   276,   280,
+     287,   303,   308,   327,   341,   348,   349,   350,   357,   361,
+     362,   366,   367,   371,   372,   376,   377,   381,   382,   386,
+     387,   391,   392,   393,   397,   398,   399,   400,   401,   405,
+     406,   407,   411,   412,   413,   417,   418,   419,   420,   424,
+     425,   426,   427,   432,   435,   439,   447,   450,   454,   462,
+     466,   470
 };
 #endif
 
@@ -546,25 +513,25 @@
    First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
 static const char *const yytname[] =
 {
-  "$end", "error", "$undefined", "DT_V1", "DT_MEMRESERVE", "DT_LSHIFT",
-  "DT_RSHIFT", "DT_LE", "DT_GE", "DT_EQ", "DT_NE", "DT_AND", "DT_OR",
-  "DT_BITS", "DT_DEL_PROP", "DT_DEL_NODE", "DT_PROPNODENAME", "DT_LITERAL",
-  "DT_CHAR_LITERAL", "DT_BASE", "DT_BYTE", "DT_STRING", "DT_LABEL",
+  "$end", "error", "$undefined", "DT_V1", "DT_PLUGIN", "DT_MEMRESERVE",
+  "DT_LSHIFT", "DT_RSHIFT", "DT_LE", "DT_GE", "DT_EQ", "DT_NE", "DT_AND",
+  "DT_OR", "DT_BITS", "DT_DEL_PROP", "DT_DEL_NODE", "DT_PROPNODENAME",
+  "DT_LITERAL", "DT_CHAR_LITERAL", "DT_BYTE", "DT_STRING", "DT_LABEL",
   "DT_REF", "DT_INCBIN", "';'", "'/'", "'{'", "'}'", "'='", "'>'", "'['",
   "']'", "'('", "','", "')'", "'<'", "'?'", "':'", "'|'", "'^'", "'&'",
   "'+'", "'-'", "'*'", "'%'", "'~'", "'!'", "$accept", "sourcefile",
-  "memreserves", "memreserve", "devicetree", "nodedef", "proplist",
-  "propdef", "propdata", "propdataprefix", "arrayprefix", "integer_prim",
-  "integer_expr", "integer_trinary", "integer_or", "integer_and",
-  "integer_bitor", "integer_bitxor", "integer_bitand", "integer_eq",
-  "integer_rela", "integer_shift", "integer_add", "integer_mul",
-  "integer_unary", "bytestring", "subnodes", "subnode", YY_NULL
+  "plugindecl", "memreserves", "memreserve", "devicetree", "nodedef",
+  "proplist", "propdef", "propdata", "propdataprefix", "arrayprefix",
+  "integer_prim", "integer_expr", "integer_trinary", "integer_or",
+  "integer_and", "integer_bitor", "integer_bitxor", "integer_bitand",
+  "integer_eq", "integer_rela", "integer_shift", "integer_add",
+  "integer_mul", "integer_unary", "bytestring", "subnodes", "subnode", YY_NULLPTR
 };
 #endif
 
 # ifdef YYPRINT
-/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
-   token YYLEX-NUM.  */
+/* YYTOKNUM[NUM] -- (External) token number corresponding to the
+   (internal) symbol number NUM (which must be that of a token).  */
 static const yytype_uint16 yytoknum[] =
 {
        0,   256,   257,   258,   259,   260,   261,   262,   263,   264,
@@ -575,183 +542,173 @@
 };
 # endif
 
-/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
-static const yytype_uint8 yyr1[] =
-{
-       0,    48,    49,    50,    50,    51,    51,    52,    52,    52,
-      52,    53,    54,    54,    55,    55,    55,    55,    56,    56,
-      56,    56,    56,    56,    56,    57,    57,    57,    58,    58,
-      58,    58,    58,    59,    59,    59,    60,    61,    61,    62,
-      62,    63,    63,    64,    64,    65,    65,    66,    66,    67,
-      67,    67,    68,    68,    68,    68,    68,    69,    69,    69,
-      70,    70,    70,    71,    71,    71,    71,    72,    72,    72,
-      72,    73,    73,    73,    74,    74,    74,    75,    75,    75
-};
+#define YYPACT_NINF -41
 
-/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
-static const yytype_uint8 yyr2[] =
+#define yypact_value_is_default(Yystate) \
+  (!!((Yystate) == (-41)))
+
+#define YYTABLE_NINF -1
+
+#define yytable_value_is_error(Yytable_value) \
+  0
+
+  /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
+     STATE-NUM.  */
+static const yytype_int8 yypact[] =
 {
-       0,     2,     4,     0,     2,     4,     2,     2,     3,     3,
-       4,     5,     0,     2,     4,     2,     3,     2,     2,     3,
-       4,     2,     9,     5,     2,     0,     2,     2,     3,     1,
-       2,     2,     2,     1,     1,     3,     1,     1,     5,     1,
-       3,     1,     3,     1,     3,     1,     3,     1,     3,     1,
-       3,     3,     1,     3,     3,     3,     3,     3,     3,     1,
-       3,     3,     1,     3,     3,     3,     1,     1,     2,     2,
-       2,     0,     2,     2,     0,     2,     2,     2,     3,     2
+      37,    10,    24,    78,   -41,    20,     9,   -41,     8,     9,
+      59,     9,   -41,   -41,   -10,     8,   -41,    60,    39,   -41,
+     -10,   -10,   -10,   -41,    51,   -41,    -7,    76,    50,    52,
+      53,    49,     2,    65,    32,    -1,   -41,    66,   -41,   -41,
+      67,    60,    60,   -41,   -41,   -41,   -41,   -10,   -10,   -10,
+     -10,   -10,   -10,   -10,   -10,   -10,   -10,   -10,   -10,   -10,
+     -10,   -10,   -10,   -10,   -10,   -10,   -41,    41,    68,   -41,
+     -41,    76,    57,    50,    52,    53,    49,     2,     2,    65,
+      65,    65,    65,    32,    32,    -1,    -1,   -41,   -41,   -41,
+      79,    80,   -12,    41,   -41,    70,    41,   -41,   -10,    74,
+      75,   -41,   -41,   -41,   -41,   -41,    77,   -41,   -41,   -41,
+     -41,   -41,    17,    -2,   -41,   -41,   -41,   -41,    83,   -41,
+     -41,   -41,    71,   -41,   -41,    31,    69,    82,    -4,   -41,
+     -41,   -41,   -41,   -41,    42,   -41,   -41,   -41,     8,   -41,
+      72,     8,    73,   -41
 };
 
-/* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM.
-   Performed when YYTABLE doesn't specify something else to do.  Zero
-   means the default is an error.  */
+  /* YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM.
+     Performed when YYTABLE does not specify something else to do.  Zero
+     means the default is an error.  */
 static const yytype_uint8 yydefact[] =
 {
-       0,     0,     0,     3,     1,     0,     0,     0,     3,    33,
-      34,     0,     0,     6,     0,     2,     4,     0,     0,     0,
-      67,     0,    36,    37,    39,    41,    43,    45,    47,    49,
-      52,    59,    62,    66,     0,    12,     7,     0,     0,     0,
-      68,    69,    70,    35,     0,     0,     0,     0,     0,     0,
+       0,     0,     0,     3,     1,     0,     5,     4,     0,     0,
+       0,     5,    35,    36,     0,     0,     8,     0,     2,     6,
+       0,     0,     0,    69,     0,    38,    39,    41,    43,    45,
+      47,    49,    51,    54,    61,    64,    68,     0,    14,     9,
+       0,     0,     0,    70,    71,    72,    37,     0,     0,     0,
        0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     5,    74,     0,     9,     8,    40,     0,
-      42,    44,    46,    48,    50,    51,    55,    56,    54,    53,
-      57,    58,    60,    61,    64,    63,    65,     0,     0,     0,
-       0,    13,     0,    74,    10,     0,     0,     0,    15,    25,
-      77,    17,    79,     0,    76,    75,    38,    16,    78,     0,
-       0,    11,    24,    14,    26,     0,    18,    27,    21,     0,
-      71,    29,     0,     0,     0,     0,    32,    31,    19,    30,
-      28,     0,    72,    73,    20,     0,    23,     0,     0,     0,
-      22
+       0,     0,     0,     0,     0,     0,     7,    76,     0,    11,
+      10,    42,     0,    44,    46,    48,    50,    52,    53,    57,
+      58,    56,    55,    59,    60,    62,    63,    66,    65,    67,
+       0,     0,     0,     0,    15,     0,    76,    12,     0,     0,
+       0,    17,    27,    79,    19,    81,     0,    78,    77,    40,
+      18,    80,     0,     0,    13,    26,    16,    28,     0,    20,
+      29,    23,     0,    73,    31,     0,     0,     0,     0,    34,
+      33,    21,    32,    30,     0,    74,    75,    22,     0,    25,
+       0,     0,     0,    24
 };
 
-/* YYDEFGOTO[NTERM-NUM].  */
-static const yytype_int8 yydefgoto[] =
+  /* YYPGOTO[NTERM-NUM].  */
+static const yytype_int8 yypgoto[] =
 {
-      -1,     2,     7,     8,    15,    36,    64,    91,   109,   110,
-     122,    20,    21,    22,    23,    24,    25,    26,    27,    28,
-      29,    30,    31,    32,    33,   125,    92,    93
+     -41,   -41,   -41,    96,   100,   -41,   -40,   -41,   -23,   -41,
+     -41,   -41,    -8,    62,    13,   -41,    81,    63,    64,    84,
+      61,    25,    11,    21,    22,   -17,   -41,    19,    23
 };
 
-/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
-   STATE-NUM.  */
-#define YYPACT_NINF -78
-static const yytype_int8 yypact[] =
+  /* YYDEFGOTO[NTERM-NUM].  */
+static const yytype_int16 yydefgoto[] =
 {
-      22,    11,    51,    10,   -78,    23,    10,     2,    10,   -78,
-     -78,    -9,    23,   -78,    30,    38,   -78,    -9,    -9,    -9,
-     -78,    35,   -78,    -6,    52,    29,    48,    49,    33,     3,
-      71,    36,     0,   -78,    64,   -78,   -78,    68,    30,    30,
-     -78,   -78,   -78,   -78,    -9,    -9,    -9,    -9,    -9,    -9,
-      -9,    -9,    -9,    -9,    -9,    -9,    -9,    -9,    -9,    -9,
-      -9,    -9,    -9,   -78,    44,    67,   -78,   -78,    52,    55,
-      29,    48,    49,    33,     3,     3,    71,    71,    71,    71,
-      36,    36,     0,     0,   -78,   -78,   -78,    78,    79,    42,
-      44,   -78,    69,    44,   -78,    -9,    73,    74,   -78,   -78,
-     -78,   -78,   -78,    75,   -78,   -78,   -78,   -78,   -78,    -7,
-      -1,   -78,   -78,   -78,   -78,    84,   -78,   -78,   -78,    63,
-     -78,   -78,    32,    66,    82,    -3,   -78,   -78,   -78,   -78,
-     -78,    46,   -78,   -78,   -78,    23,   -78,    70,    23,    72,
-     -78
+      -1,     2,     6,    10,    11,    18,    39,    67,    94,   112,
+     113,   125,    23,    24,    25,    26,    27,    28,    29,    30,
+      31,    32,    33,    34,    35,    36,   128,    95,    96
 };
 
-/* YYPGOTO[NTERM-NUM].  */
-static const yytype_int8 yypgoto[] =
+  /* YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM.  If
+     positive, shift that token.  If negative, reduce the rule whose
+     number is the opposite.  If YYTABLE_NINF, syntax error.  */
+static const yytype_uint8 yytable[] =
 {
-     -78,   -78,    97,   100,   -78,   -37,   -78,   -77,   -78,   -78,
-     -78,    -5,    65,    13,   -78,    76,    77,    62,    80,    83,
-      34,    20,    26,    28,   -14,   -78,    18,    24
+      15,    69,    70,    43,    44,    45,    47,    37,    12,    13,
+      55,    56,   118,   101,     8,    38,   135,   102,   136,   119,
+     120,   121,   122,    14,     4,    63,    12,    13,   137,   123,
+      48,     9,    57,    20,   124,     3,    21,    22,    58,   115,
+       1,    14,   116,    64,    65,     7,    87,    88,    89,    12,
+      13,   117,   103,   129,   130,    40,    90,    91,    92,    53,
+      54,   131,    41,    93,    14,    42,    79,    80,    81,    82,
+     104,    59,    60,   107,    61,    62,   138,   139,    77,    78,
+      83,    84,     5,    85,    86,    17,    46,    38,    49,    50,
+      68,    66,    51,    97,    52,    98,    99,   100,   106,   110,
+     111,   126,   114,   134,   127,   133,   141,    19,   143,    16,
+      72,   109,    73,    76,    74,   108,   105,   132,     0,     0,
+       0,     0,     0,     0,     0,     0,     0,     0,    71,     0,
+     140,     0,     0,   142,     0,    75
 };
 
-/* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
-   positive, shift that token.  If negative, reduce the rule which
-   number is the opposite.  If YYTABLE_NINF, syntax error.  */
-#define YYTABLE_NINF -1
-static const yytype_uint8 yytable[] =
+static const yytype_int16 yycheck[] =
 {
-      12,    66,    67,    40,    41,    42,    44,    34,     9,    10,
-      52,    53,   115,   101,     5,   112,   104,   132,   113,   133,
-     116,   117,   118,   119,    11,     1,    60,   114,    14,   134,
-     120,    45,     6,    54,    17,   121,     3,    18,    19,    55,
-       9,    10,    50,    51,    61,    62,    84,    85,    86,     9,
-      10,     4,   100,    37,   126,   127,    11,    35,    87,    88,
-      89,    38,   128,    46,    39,    11,    90,    98,    47,    35,
-      43,    99,    76,    77,    78,    79,    56,    57,    58,    59,
-     135,   136,    80,    81,    74,    75,    82,    83,    48,    63,
-      49,    65,    94,    95,    96,    97,   124,   103,   107,   108,
-     111,   123,   130,   131,   138,    16,    13,   140,   106,    71,
-      69,   105,     0,     0,   102,     0,     0,   129,     0,     0,
-      68,     0,     0,    70,     0,     0,     0,     0,    72,     0,
-     137,     0,    73,   139
+       8,    41,    42,    20,    21,    22,    13,    15,    18,    19,
+       8,     9,    14,    25,     5,    27,    20,    29,    22,    21,
+      22,    23,    24,    33,     0,    26,    18,    19,    32,    31,
+      37,    22,    30,    43,    36,    25,    46,    47,    36,    22,
+       3,    33,    25,    44,    45,    25,    63,    64,    65,    18,
+      19,    34,    92,    22,    23,    16,    15,    16,    17,    10,
+      11,    30,    23,    22,    33,    26,    55,    56,    57,    58,
+      93,     6,     7,    96,    42,    43,    34,    35,    53,    54,
+      59,    60,     4,    61,    62,    26,    35,    27,    12,    39,
+      23,    25,    40,    25,    41,    38,    17,    17,    28,    25,
+      25,    18,    25,    21,    33,    36,    34,    11,    35,     9,
+      48,    98,    49,    52,    50,    96,    93,   125,    -1,    -1,
+      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    47,    -1,
+     138,    -1,    -1,   141,    -1,    51
 };
 
-#define yypact_value_is_default(Yystate) \
-  (!!((Yystate) == (-78)))
-
-#define yytable_value_is_error(Yytable_value) \
-  YYID (0)
+  /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
+     symbol of state STATE-NUM.  */
+static const yytype_uint8 yystos[] =
+{
+       0,     3,    49,    25,     0,     4,    50,    25,     5,    22,
+      51,    52,    18,    19,    33,    60,    52,    26,    53,    51,
+      43,    46,    47,    60,    61,    62,    63,    64,    65,    66,
+      67,    68,    69,    70,    71,    72,    73,    60,    27,    54,
+      16,    23,    26,    73,    73,    73,    35,    13,    37,    12,
+      39,    40,    41,    10,    11,     8,     9,    30,    36,     6,
+       7,    42,    43,    26,    44,    45,    25,    55,    23,    54,
+      54,    64,    61,    65,    66,    67,    68,    69,    69,    70,
+      70,    70,    70,    71,    71,    72,    72,    73,    73,    73,
+      15,    16,    17,    22,    56,    75,    76,    25,    38,    17,
+      17,    25,    29,    54,    56,    76,    28,    56,    75,    62,
+      25,    25,    57,    58,    25,    22,    25,    34,    14,    21,
+      22,    23,    24,    31,    36,    59,    18,    33,    74,    22,
+      23,    30,    60,    36,    21,    20,    22,    32,    34,    35,
+      60,    34,    60,    35
+};
 
-static const yytype_int16 yycheck[] =
+  /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
+static const yytype_uint8 yyr1[] =
 {
-       5,    38,    39,    17,    18,    19,    12,    12,    17,    18,
-       7,     8,    13,    90,     4,    22,    93,    20,    25,    22,
-      21,    22,    23,    24,    33,     3,    26,    34,    26,    32,
-      31,    37,    22,    30,    43,    36,    25,    46,    47,    36,
-      17,    18,     9,    10,    44,    45,    60,    61,    62,    17,
-      18,     0,    89,    15,    22,    23,    33,    27,    14,    15,
-      16,    23,    30,    11,    26,    33,    22,    25,    39,    27,
-      35,    29,    52,    53,    54,    55,     5,     6,    42,    43,
-      34,    35,    56,    57,    50,    51,    58,    59,    40,    25,
-      41,    23,    25,    38,    16,    16,    33,    28,    25,    25,
-      25,    17,    36,    21,    34,     8,     6,    35,    95,    47,
-      45,    93,    -1,    -1,    90,    -1,    -1,   122,    -1,    -1,
-      44,    -1,    -1,    46,    -1,    -1,    -1,    -1,    48,    -1,
-     135,    -1,    49,   138
+       0,    48,    49,    50,    50,    51,    51,    52,    52,    53,
+      53,    53,    53,    54,    55,    55,    56,    56,    56,    56,
+      57,    57,    57,    57,    57,    57,    57,    58,    58,    58,
+      59,    59,    59,    59,    59,    60,    60,    60,    61,    62,
+      62,    63,    63,    64,    64,    65,    65,    66,    66,    67,
+      67,    68,    68,    68,    69,    69,    69,    69,    69,    70,
+      70,    70,    71,    71,    71,    72,    72,    72,    72,    73,
+      73,    73,    73,    74,    74,    74,    75,    75,    75,    76,
+      76,    76
 };
 
-/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
-   symbol of state STATE-NUM.  */
-static const yytype_uint8 yystos[] =
+  /* YYR2[YYN] -- Number of symbols on the right hand side of rule YYN.  */
+static const yytype_uint8 yyr2[] =
 {
-       0,     3,    49,    25,     0,     4,    22,    50,    51,    17,
-      18,    33,    59,    51,    26,    52,    50,    43,    46,    47,
-      59,    60,    61,    62,    63,    64,    65,    66,    67,    68,
-      69,    70,    71,    72,    59,    27,    53,    15,    23,    26,
-      72,    72,    72,    35,    12,    37,    11,    39,    40,    41,
-       9,    10,     7,     8,    30,    36,     5,     6,    42,    43,
-      26,    44,    45,    25,    54,    23,    53,    53,    63,    60,
-      64,    65,    66,    67,    68,    68,    69,    69,    69,    69,
-      70,    70,    71,    71,    72,    72,    72,    14,    15,    16,
-      22,    55,    74,    75,    25,    38,    16,    16,    25,    29,
-      53,    55,    75,    28,    55,    74,    61,    25,    25,    56,
-      57,    25,    22,    25,    34,    13,    21,    22,    23,    24,
-      31,    36,    58,    17,    33,    73,    22,    23,    30,    59,
-      36,    21,    20,    22,    32,    34,    35,    59,    34,    59,
-      35
+       0,     2,     5,     0,     2,     0,     2,     4,     2,     2,
+       3,     3,     4,     5,     0,     2,     4,     2,     3,     2,
+       2,     3,     4,     2,     9,     5,     2,     0,     2,     2,
+       3,     1,     2,     2,     2,     1,     1,     3,     1,     1,
+       5,     1,     3,     1,     3,     1,     3,     1,     3,     1,
+       3,     1,     3,     3,     1,     3,     3,     3,     3,     3,
+       3,     1,     3,     3,     1,     3,     3,     3,     1,     1,
+       2,     2,     2,     0,     2,     2,     0,     2,     2,     2,
+       3,     2
 };
 
-#define yyerrok		(yyerrstatus = 0)
-#define yyclearin	(yychar = YYEMPTY)
-#define YYEMPTY		(-2)
-#define YYEOF		0
-
-#define YYACCEPT	goto yyacceptlab
-#define YYABORT		goto yyabortlab
-#define YYERROR		goto yyerrorlab
-
-
-/* Like YYERROR except do call yyerror.  This remains here temporarily
-   to ease the transition to the new meaning of YYERROR, for GCC.
-   Once GCC version 2 has supplanted version 1, this can go.  However,
-   YYFAIL appears to be in use.  Nevertheless, it is formally deprecated
-   in Bison 2.4.2's NEWS entry, where a plan to phase it out is
-   discussed.  */
-
-#define YYFAIL		goto yyerrlab
-#if defined YYFAIL
-  /* This is here to suppress warnings from the GCC cpp's
-     -Wunused-macros.  Normally we don't worry about that warning, but
-     some users do, and we want to make it easy for users to remove
-     YYFAIL uses, which will produce warnings from Bison 2.5.  */
-#endif
+
+#define yyerrok         (yyerrstatus = 0)
+#define yyclearin       (yychar = YYEMPTY)
+#define YYEMPTY         (-2)
+#define YYEOF           0
+
+#define YYACCEPT        goto yyacceptlab
+#define YYABORT         goto yyabortlab
+#define YYERROR         goto yyerrorlab
+
 
 #define YYRECOVERING()  (!!yyerrstatus)
 
@@ -768,27 +725,41 @@
   else                                                          \
     {                                                           \
       yyerror (YY_("syntax error: cannot back up")); \
-      YYERROR;							\
-    }								\
-while (YYID (0))
+      YYERROR;                                                  \
+    }                                                           \
+while (0)
 
 /* Error token number */
-#define YYTERROR	1
-#define YYERRCODE	256
+#define YYTERROR        1
+#define YYERRCODE       256
 
 
-/* This macro is provided for backward compatibility. */
-#ifndef YY_LOCATION_PRINT
-# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
+   If N is 0, then set CURRENT to the empty location which ends
+   the previous symbol: RHS[0] (always defined).  */
+
+#ifndef YYLLOC_DEFAULT
+# define YYLLOC_DEFAULT(Current, Rhs, N)                                \
+    do                                                                  \
+      if (N)                                                            \
+        {                                                               \
+          (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;        \
+          (Current).first_column = YYRHSLOC (Rhs, 1).first_column;      \
+          (Current).last_line    = YYRHSLOC (Rhs, N).last_line;         \
+          (Current).last_column  = YYRHSLOC (Rhs, N).last_column;       \
+        }                                                               \
+      else                                                              \
+        {                                                               \
+          (Current).first_line   = (Current).last_line   =              \
+            YYRHSLOC (Rhs, 0).last_line;                                \
+          (Current).first_column = (Current).last_column =              \
+            YYRHSLOC (Rhs, 0).last_column;                              \
+        }                                                               \
+    while (0)
 #endif
 
+#define YYRHSLOC(Rhs, K) ((Rhs)[K])
 
-/* YYLEX -- calling `yylex' with the right arguments.  */
-#ifdef YYLEX_PARAM
-# define YYLEX yylex (YYLEX_PARAM)
-#else
-# define YYLEX yylex ()
-#endif
 
 /* Enable debugging if requested.  */
 #if YYDEBUG
@@ -798,50 +769,84 @@
 #  define YYFPRINTF fprintf
 # endif
 
-# define YYDPRINTF(Args)			\
-do {						\
-  if (yydebug)					\
-    YYFPRINTF Args;				\
-} while (YYID (0))
-
-# define YY_SYMBOL_PRINT(Title, Type, Value, Location)			  \
-do {									  \
-  if (yydebug)								  \
-    {									  \
-      YYFPRINTF (stderr, "%s ", Title);					  \
-      yy_symbol_print (stderr,						  \
-		  Type, Value); \
-      YYFPRINTF (stderr, "\n");						  \
-    }									  \
-} while (YYID (0))
+# define YYDPRINTF(Args)                        \
+do {                                            \
+  if (yydebug)                                  \
+    YYFPRINTF Args;                             \
+} while (0)
 
 
-/*--------------------------------.
-| Print this symbol on YYOUTPUT.  |
-`--------------------------------*/
+/* YY_LOCATION_PRINT -- Print the location on the stream.
+   This macro was not mandated originally: define only if we know
+   we won't break user code: when these are the locations we know.  */
 
-/*ARGSUSED*/
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-static void
-yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
-#else
-static void
-yy_symbol_value_print (yyoutput, yytype, yyvaluep)
-    FILE *yyoutput;
-    int yytype;
-    YYSTYPE const * const yyvaluep;
+#ifndef YY_LOCATION_PRINT
+# if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
+
+/* Print *YYLOCP on YYO.  Private, do not rely on its existence. */
+
+YY_ATTRIBUTE_UNUSED
+static unsigned
+yy_location_print_ (FILE *yyo, YYLTYPE const * const yylocp)
+{
+  unsigned res = 0;
+  int end_col = 0 != yylocp->last_column ? yylocp->last_column - 1 : 0;
+  if (0 <= yylocp->first_line)
+    {
+      res += YYFPRINTF (yyo, "%d", yylocp->first_line);
+      if (0 <= yylocp->first_column)
+        res += YYFPRINTF (yyo, ".%d", yylocp->first_column);
+    }
+  if (0 <= yylocp->last_line)
+    {
+      if (yylocp->first_line < yylocp->last_line)
+        {
+          res += YYFPRINTF (yyo, "-%d", yylocp->last_line);
+          if (0 <= end_col)
+            res += YYFPRINTF (yyo, ".%d", end_col);
+        }
+      else if (0 <= end_col && yylocp->first_column < end_col)
+        res += YYFPRINTF (yyo, "-%d", end_col);
+    }
+  return res;
+ }
+
+#  define YY_LOCATION_PRINT(File, Loc)          \
+  yy_location_print_ (File, &(Loc))
+
+# else
+#  define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+# endif
 #endif
+
+
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)                    \
+do {                                                                      \
+  if (yydebug)                                                            \
+    {                                                                     \
+      YYFPRINTF (stderr, "%s ", Title);                                   \
+      yy_symbol_print (stderr,                                            \
+                  Type, Value, Location); \
+      YYFPRINTF (stderr, "\n");                                           \
+    }                                                                     \
+} while (0)
+
+
+/*----------------------------------------.
+| Print this symbol's value on YYOUTPUT.  |
+`----------------------------------------*/
+
+static void
+yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, YYLTYPE const * const yylocationp)
 {
   FILE *yyo = yyoutput;
   YYUSE (yyo);
+  YYUSE (yylocationp);
   if (!yyvaluep)
     return;
 # ifdef YYPRINT
   if (yytype < YYNTOKENS)
     YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
-# else
-  YYUSE (yyoutput);
 # endif
   YYUSE (yytype);
 }
@@ -851,24 +856,15 @@
 | Print this symbol on YYOUTPUT.  |
 `--------------------------------*/
 
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-static void
-yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
-#else
 static void
-yy_symbol_print (yyoutput, yytype, yyvaluep)
-    FILE *yyoutput;
-    int yytype;
-    YYSTYPE const * const yyvaluep;
-#endif
+yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, YYLTYPE const * const yylocationp)
 {
-  if (yytype < YYNTOKENS)
-    YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
-  else
-    YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
+  YYFPRINTF (yyoutput, "%s %s (",
+             yytype < YYNTOKENS ? "token" : "nterm", yytname[yytype]);
 
-  yy_symbol_value_print (yyoutput, yytype, yyvaluep);
+  YY_LOCATION_PRINT (yyoutput, *yylocationp);
+  YYFPRINTF (yyoutput, ": ");
+  yy_symbol_value_print (yyoutput, yytype, yyvaluep, yylocationp);
   YYFPRINTF (yyoutput, ")");
 }
 
@@ -877,16 +873,8 @@
 | TOP (included).                                                   |
 `------------------------------------------------------------------*/
 
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
 static void
 yy_stack_print (yytype_int16 *yybottom, yytype_int16 *yytop)
-#else
-static void
-yy_stack_print (yybottom, yytop)
-    yytype_int16 *yybottom;
-    yytype_int16 *yytop;
-#endif
 {
   YYFPRINTF (stderr, "Stack now");
   for (; yybottom <= yytop; yybottom++)
@@ -897,49 +885,42 @@
   YYFPRINTF (stderr, "\n");
 }
 
-# define YY_STACK_PRINT(Bottom, Top)				\
-do {								\
-  if (yydebug)							\
-    yy_stack_print ((Bottom), (Top));				\
-} while (YYID (0))
+# define YY_STACK_PRINT(Bottom, Top)                            \
+do {                                                            \
+  if (yydebug)                                                  \
+    yy_stack_print ((Bottom), (Top));                           \
+} while (0)
 
 
 /*------------------------------------------------.
 | Report that the YYRULE is going to be reduced.  |
 `------------------------------------------------*/
 
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-static void
-yy_reduce_print (YYSTYPE *yyvsp, int yyrule)
-#else
 static void
-yy_reduce_print (yyvsp, yyrule)
-    YYSTYPE *yyvsp;
-    int yyrule;
-#endif
+yy_reduce_print (yytype_int16 *yyssp, YYSTYPE *yyvsp, YYLTYPE *yylsp, int yyrule)
 {
+  unsigned long int yylno = yyrline[yyrule];
   int yynrhs = yyr2[yyrule];
   int yyi;
-  unsigned long int yylno = yyrline[yyrule];
   YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
-	     yyrule - 1, yylno);
+             yyrule - 1, yylno);
   /* The symbols being reduced.  */
   for (yyi = 0; yyi < yynrhs; yyi++)
     {
       YYFPRINTF (stderr, "   $%d = ", yyi + 1);
-      yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
-		       &(yyvsp[(yyi + 1) - (yynrhs)])
-		       		       );
+      yy_symbol_print (stderr,
+                       yystos[yyssp[yyi + 1 - yynrhs]],
+                       &(yyvsp[(yyi + 1) - (yynrhs)])
+                       , &(yylsp[(yyi + 1) - (yynrhs)])                       );
       YYFPRINTF (stderr, "\n");
     }
 }
 
-# define YY_REDUCE_PRINT(Rule)		\
-do {					\
-  if (yydebug)				\
-    yy_reduce_print (yyvsp, Rule); \
-} while (YYID (0))
+# define YY_REDUCE_PRINT(Rule)          \
+do {                                    \
+  if (yydebug)                          \
+    yy_reduce_print (yyssp, yyvsp, yylsp, Rule); \
+} while (0)
 
 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */
@@ -953,7 +934,7 @@
 
 
 /* YYINITDEPTH -- initial size of the parser's stacks.  */
-#ifndef	YYINITDEPTH
+#ifndef YYINITDEPTH
 # define YYINITDEPTH 200
 #endif
 
@@ -976,15 +957,8 @@
 #   define yystrlen strlen
 #  else
 /* Return the length of YYSTR.  */
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
 static YYSIZE_T
 yystrlen (const char *yystr)
-#else
-static YYSIZE_T
-yystrlen (yystr)
-    const char *yystr;
-#endif
 {
   YYSIZE_T yylen;
   for (yylen = 0; yystr[yylen]; yylen++)
@@ -1000,16 +974,8 @@
 #  else
 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
    YYDEST.  */
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
 static char *
 yystpcpy (char *yydest, const char *yysrc)
-#else
-static char *
-yystpcpy (yydest, yysrc)
-    char *yydest;
-    const char *yysrc;
-#endif
 {
   char *yyd = yydest;
   const char *yys = yysrc;
@@ -1039,27 +1005,27 @@
       char const *yyp = yystr;
 
       for (;;)
-	switch (*++yyp)
-	  {
-	  case '\'':
-	  case ',':
-	    goto do_not_strip_quotes;
-
-	  case '\\':
-	    if (*++yyp != '\\')
-	      goto do_not_strip_quotes;
-	    /* Fall through.  */
-	  default:
-	    if (yyres)
-	      yyres[yyn] = *yyp;
-	    yyn++;
-	    break;
-
-	  case '"':
-	    if (yyres)
-	      yyres[yyn] = '\0';
-	    return yyn;
-	  }
+        switch (*++yyp)
+          {
+          case '\'':
+          case ',':
+            goto do_not_strip_quotes;
+
+          case '\\':
+            if (*++yyp != '\\')
+              goto do_not_strip_quotes;
+            /* Fall through.  */
+          default:
+            if (yyres)
+              yyres[yyn] = *yyp;
+            yyn++;
+            break;
+
+          case '"':
+            if (yyres)
+              yyres[yyn] = '\0';
+            return yyn;
+          }
     do_not_strip_quotes: ;
     }
 
@@ -1082,11 +1048,11 @@
 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
                 yytype_int16 *yyssp, int yytoken)
 {
-  YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);
+  YYSIZE_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]);
   YYSIZE_T yysize = yysize0;
   enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
   /* Internationalized format string. */
-  const char *yyformat = YY_NULL;
+  const char *yyformat = YY_NULLPTR;
   /* Arguments of yyformat. */
   char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
   /* Number of reported tokens (one for the "unexpected", one per
@@ -1094,10 +1060,6 @@
   int yycount = 0;
 
   /* There are many possibilities here to consider:
-     - Assume YYFAIL is not used.  It's too flawed to consider.  See
-       <http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html>
-       for details.  YYERROR is fine as it does not invoke this
-       function.
      - If this state is a consistent state with a default action, then
        the only way this function was invoked is if the default action
        is an error action.  In that case, don't check for expected
@@ -1147,7 +1109,7 @@
                   }
                 yyarg[yycount++] = yytname[yyx];
                 {
-                  YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
+                  YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULLPTR, yytname[yyx]);
                   if (! (yysize <= yysize1
                          && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
                     return 2;
@@ -1214,26 +1176,18 @@
 | Release the memory associated to this symbol.  |
 `-----------------------------------------------*/
 
-/*ARGSUSED*/
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-static void
-yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep)
-#else
 static void
-yydestruct (yymsg, yytype, yyvaluep)
-    const char *yymsg;
-    int yytype;
-    YYSTYPE *yyvaluep;
-#endif
+yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep, YYLTYPE *yylocationp)
 {
   YYUSE (yyvaluep);
-
+  YYUSE (yylocationp);
   if (!yymsg)
     yymsg = "Deleting";
   YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
 
+  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
   YYUSE (yytype);
+  YY_IGNORE_MAYBE_UNINITIALIZED_END
 }
 
 
@@ -1242,18 +1196,14 @@
 /* The lookahead symbol.  */
 int yychar;
 
-
-#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-# define YY_IGNORE_MAYBE_UNINITIALIZED_END
-#endif
-#ifndef YY_INITIAL_VALUE
-# define YY_INITIAL_VALUE(Value) /* Nothing. */
-#endif
-
 /* The semantic value of the lookahead symbol.  */
-YYSTYPE yylval YY_INITIAL_VALUE(yyval_default);
-
+YYSTYPE yylval;
+/* Location data for the lookahead symbol.  */
+YYLTYPE yylloc
+# if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
+  = { 1, 1, 1, 1 }
+# endif
+;
 /* Number of syntax errors so far.  */
 int yynerrs;
 
@@ -1262,35 +1212,17 @@
 | yyparse.  |
 `----------*/
 
-#ifdef YYPARSE_PARAM
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-int
-yyparse (void *YYPARSE_PARAM)
-#else
-int
-yyparse (YYPARSE_PARAM)
-    void *YYPARSE_PARAM;
-#endif
-#else /* ! YYPARSE_PARAM */
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
 int
 yyparse (void)
-#else
-int
-yyparse ()
-
-#endif
-#endif
 {
     int yystate;
     /* Number of tokens to shift before error messages enabled.  */
     int yyerrstatus;
 
     /* The stacks and their tools:
-       `yyss': related to states.
-       `yyvs': related to semantic values.
+       'yyss': related to states.
+       'yyvs': related to semantic values.
+       'yyls': related to locations.
 
        Refer to the stacks through separate pointers, to allow yyoverflow
        to reallocate them elsewhere.  */
@@ -1305,6 +1237,14 @@
     YYSTYPE *yyvs;
     YYSTYPE *yyvsp;
 
+    /* The location stack.  */
+    YYLTYPE yylsa[YYINITDEPTH];
+    YYLTYPE *yyls;
+    YYLTYPE *yylsp;
+
+    /* The locations where the error started and ended.  */
+    YYLTYPE yyerror_range[3];
+
     YYSIZE_T yystacksize;
 
   int yyn;
@@ -1314,6 +1254,7 @@
   /* The variables used to return semantic value and location from the
      action routines.  */
   YYSTYPE yyval;
+  YYLTYPE yyloc;
 
 #if YYERROR_VERBOSE
   /* Buffer for error messages, and its allocated size.  */
@@ -1322,7 +1263,7 @@
   YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
 #endif
 
-#define YYPOPSTACK(N)   (yyvsp -= (N), yyssp -= (N))
+#define YYPOPSTACK(N)   (yyvsp -= (N), yyssp -= (N), yylsp -= (N))
 
   /* The number of symbols on the RHS of the reduced rule.
      Keep to zero when no symbol should be popped.  */
@@ -1330,6 +1271,7 @@
 
   yyssp = yyss = yyssa;
   yyvsp = yyvs = yyvsa;
+  yylsp = yyls = yylsa;
   yystacksize = YYINITDEPTH;
 
   YYDPRINTF ((stderr, "Starting parse\n"));
@@ -1338,6 +1280,7 @@
   yyerrstatus = 0;
   yynerrs = 0;
   yychar = YYEMPTY; /* Cause a token to be read.  */
+  yylsp[0] = yylloc;
   goto yysetstate;
 
 /*------------------------------------------------------------.
@@ -1358,23 +1301,26 @@
 
 #ifdef yyoverflow
       {
-	/* Give user a chance to reallocate the stack.  Use copies of
-	   these so that the &'s don't force the real ones into
-	   memory.  */
-	YYSTYPE *yyvs1 = yyvs;
-	yytype_int16 *yyss1 = yyss;
-
-	/* Each stack pointer address is followed by the size of the
-	   data in use in that stack, in bytes.  This used to be a
-	   conditional around just the two extra args, but that might
-	   be undefined if yyoverflow is a macro.  */
-	yyoverflow (YY_("memory exhausted"),
-		    &yyss1, yysize * sizeof (*yyssp),
-		    &yyvs1, yysize * sizeof (*yyvsp),
-		    &yystacksize);
-
-	yyss = yyss1;
-	yyvs = yyvs1;
+        /* Give user a chance to reallocate the stack.  Use copies of
+           these so that the &'s don't force the real ones into
+           memory.  */
+        YYSTYPE *yyvs1 = yyvs;
+        yytype_int16 *yyss1 = yyss;
+        YYLTYPE *yyls1 = yyls;
+
+        /* Each stack pointer address is followed by the size of the
+           data in use in that stack, in bytes.  This used to be a
+           conditional around just the two extra args, but that might
+           be undefined if yyoverflow is a macro.  */
+        yyoverflow (YY_("memory exhausted"),
+                    &yyss1, yysize * sizeof (*yyssp),
+                    &yyvs1, yysize * sizeof (*yyvsp),
+                    &yyls1, yysize * sizeof (*yylsp),
+                    &yystacksize);
+
+        yyls = yyls1;
+        yyss = yyss1;
+        yyvs = yyvs1;
       }
 #else /* no yyoverflow */
 # ifndef YYSTACK_RELOCATE
@@ -1382,34 +1328,36 @@
 # else
       /* Extend the stack our own way.  */
       if (YYMAXDEPTH <= yystacksize)
-	goto yyexhaustedlab;
+        goto yyexhaustedlab;
       yystacksize *= 2;
       if (YYMAXDEPTH < yystacksize)
-	yystacksize = YYMAXDEPTH;
+        yystacksize = YYMAXDEPTH;
 
       {
-	yytype_int16 *yyss1 = yyss;
-	union yyalloc *yyptr =
-	  (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
-	if (! yyptr)
-	  goto yyexhaustedlab;
-	YYSTACK_RELOCATE (yyss_alloc, yyss);
-	YYSTACK_RELOCATE (yyvs_alloc, yyvs);
+        yytype_int16 *yyss1 = yyss;
+        union yyalloc *yyptr =
+          (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
+        if (! yyptr)
+          goto yyexhaustedlab;
+        YYSTACK_RELOCATE (yyss_alloc, yyss);
+        YYSTACK_RELOCATE (yyvs_alloc, yyvs);
+        YYSTACK_RELOCATE (yyls_alloc, yyls);
 #  undef YYSTACK_RELOCATE
-	if (yyss1 != yyssa)
-	  YYSTACK_FREE (yyss1);
+        if (yyss1 != yyssa)
+          YYSTACK_FREE (yyss1);
       }
 # endif
 #endif /* no yyoverflow */
 
       yyssp = yyss + yysize - 1;
       yyvsp = yyvs + yysize - 1;
+      yylsp = yyls + yysize - 1;
 
       YYDPRINTF ((stderr, "Stack size increased to %lu\n",
-		  (unsigned long int) yystacksize));
+                  (unsigned long int) yystacksize));
 
       if (yyss + yystacksize - 1 <= yyssp)
-	YYABORT;
+        YYABORT;
     }
 
   YYDPRINTF ((stderr, "Entering state %d\n", yystate));
@@ -1438,7 +1386,7 @@
   if (yychar == YYEMPTY)
     {
       YYDPRINTF ((stderr, "Reading a token: "));
-      yychar = YYLEX;
+      yychar = yylex ();
     }
 
   if (yychar <= YYEOF)
@@ -1481,7 +1429,7 @@
   YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
   *++yyvsp = yylval;
   YY_IGNORE_MAYBE_UNINITIALIZED_END
-
+  *++yylsp = yylloc;
   goto yynewstate;
 
 
@@ -1503,7 +1451,7 @@
   yylen = yyr2[yyn];
 
   /* If YYLEN is nonzero, implement the default value of the action:
-     `$$ = $1'.
+     '$$ = $1'.
 
      Otherwise, the following line sets YYVAL to garbage.
      This behavior is undocumented and Bison
@@ -1512,287 +1460,306 @@
      GCC warning that YYVAL may be used uninitialized.  */
   yyval = yyvsp[1-yylen];
 
-
+  /* Default location.  */
+  YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);
   YY_REDUCE_PRINT (yyn);
   switch (yyn)
     {
         case 2:
-/* Line 1787 of yacc.c  */
-#line 110 "dtc-parser.y"
+#line 109 "dtc-parser.y" /* yacc.c:1646  */
     {
-			the_boot_info = build_boot_info((yyvsp[(3) - (4)].re), (yyvsp[(4) - (4)].node),
-							guess_boot_cpuid((yyvsp[(4) - (4)].node)));
+			(yyvsp[0].node)->is_plugin = (yyvsp[-2].is_plugin);
+			(yyvsp[0].node)->is_root = 1;
+			the_boot_info = build_boot_info((yyvsp[-1].re), (yyvsp[0].node),
+							guess_boot_cpuid((yyvsp[0].node)));
 		}
+#line 1477 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 3:
-/* Line 1787 of yacc.c  */
-#line 118 "dtc-parser.y"
+#line 119 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.re) = NULL;
+			(yyval.is_plugin) = 0;
 		}
+#line 1485 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 4:
-/* Line 1787 of yacc.c  */
-#line 122 "dtc-parser.y"
+#line 123 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.re) = chain_reserve_entry((yyvsp[(1) - (2)].re), (yyvsp[(2) - (2)].re));
+			(yyval.is_plugin) = 1;
 		}
+#line 1493 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 5:
-/* Line 1787 of yacc.c  */
-#line 129 "dtc-parser.y"
+#line 130 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.re) = build_reserve_entry((yyvsp[(2) - (4)].integer), (yyvsp[(3) - (4)].integer));
+			(yyval.re) = NULL;
 		}
+#line 1501 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 6:
-/* Line 1787 of yacc.c  */
-#line 133 "dtc-parser.y"
+#line 134 "dtc-parser.y" /* yacc.c:1646  */
     {
-			add_label(&(yyvsp[(2) - (2)].re)->labels, (yyvsp[(1) - (2)].labelref));
-			(yyval.re) = (yyvsp[(2) - (2)].re);
+			(yyval.re) = chain_reserve_entry((yyvsp[-1].re), (yyvsp[0].re));
 		}
+#line 1509 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 7:
-/* Line 1787 of yacc.c  */
-#line 141 "dtc-parser.y"
+#line 141 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.node) = name_node((yyvsp[(2) - (2)].node), "");
+			(yyval.re) = build_reserve_entry((yyvsp[-2].integer), (yyvsp[-1].integer));
 		}
+#line 1517 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 8:
-/* Line 1787 of yacc.c  */
-#line 145 "dtc-parser.y"
+#line 145 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.node) = merge_nodes((yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node));
+			add_label(&(yyvsp[0].re)->labels, (yyvsp[-1].labelref));
+			(yyval.re) = (yyvsp[0].re);
 		}
+#line 1526 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 9:
-/* Line 1787 of yacc.c  */
-#line 149 "dtc-parser.y"
+#line 153 "dtc-parser.y" /* yacc.c:1646  */
     {
-			struct node *target = get_node_by_ref((yyvsp[(1) - (3)].node), (yyvsp[(2) - (3)].labelref));
-
-			if (target)
-				merge_nodes(target, (yyvsp[(3) - (3)].node));
-			else
-				print_error("label or path, '%s', not found", (yyvsp[(2) - (3)].labelref));
-			(yyval.node) = (yyvsp[(1) - (3)].node);
+			(yyval.node) = name_node((yyvsp[0].node), "");
 		}
+#line 1534 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 10:
-/* Line 1787 of yacc.c  */
-#line 159 "dtc-parser.y"
+#line 157 "dtc-parser.y" /* yacc.c:1646  */
     {
-			struct node *target = get_node_by_ref((yyvsp[(1) - (4)].node), (yyvsp[(3) - (4)].labelref));
-
-			if (!target)
-				print_error("label or path, '%s', not found", (yyvsp[(3) - (4)].labelref));
-			else
-				delete_node(target);
-
-			(yyval.node) = (yyvsp[(1) - (4)].node);
+			(yyval.node) = merge_nodes((yyvsp[-2].node), (yyvsp[0].node));
 		}
+#line 1542 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 11:
-/* Line 1787 of yacc.c  */
-#line 173 "dtc-parser.y"
+#line 161 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.node) = build_node((yyvsp[(2) - (5)].proplist), (yyvsp[(3) - (5)].nodelist));
+			struct node *target = get_node_by_ref((yyvsp[-2].node), (yyvsp[-1].labelref));
+
+			if (target)
+				merge_nodes(target, (yyvsp[0].node));
+			else
+				ERROR(&(yylsp[-1]), "Label or path %s not found", (yyvsp[-1].labelref));
+			(yyval.node) = (yyvsp[-2].node);
 		}
+#line 1556 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 12:
-/* Line 1787 of yacc.c  */
-#line 180 "dtc-parser.y"
+#line 171 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.proplist) = NULL;
+			struct node *target = get_node_by_ref((yyvsp[-3].node), (yyvsp[-1].labelref));
+
+			if (target)
+				delete_node(target);
+			else
+				ERROR(&(yylsp[-1]), "Label or path %s not found", (yyvsp[-1].labelref));
+
+
+			(yyval.node) = (yyvsp[-3].node);
 		}
+#line 1572 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 13:
-/* Line 1787 of yacc.c  */
-#line 184 "dtc-parser.y"
+#line 186 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.proplist) = chain_property((yyvsp[(2) - (2)].prop), (yyvsp[(1) - (2)].proplist));
+			(yyval.node) = build_node((yyvsp[-3].proplist), (yyvsp[-2].nodelist));
 		}
+#line 1580 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 14:
-/* Line 1787 of yacc.c  */
-#line 191 "dtc-parser.y"
+#line 193 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.prop) = build_property((yyvsp[(1) - (4)].propnodename), (yyvsp[(3) - (4)].data));
+			(yyval.proplist) = NULL;
 		}
+#line 1588 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 15:
-/* Line 1787 of yacc.c  */
-#line 195 "dtc-parser.y"
+#line 197 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.prop) = build_property((yyvsp[(1) - (2)].propnodename), empty_data);
+			(yyval.proplist) = chain_property((yyvsp[0].prop), (yyvsp[-1].proplist));
 		}
+#line 1596 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 16:
-/* Line 1787 of yacc.c  */
-#line 199 "dtc-parser.y"
+#line 204 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.prop) = build_property_delete((yyvsp[(2) - (3)].propnodename));
+			(yyval.prop) = build_property((yyvsp[-3].propnodename), (yyvsp[-1].data));
 		}
+#line 1604 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 17:
-/* Line 1787 of yacc.c  */
-#line 203 "dtc-parser.y"
+#line 208 "dtc-parser.y" /* yacc.c:1646  */
     {
-			add_label(&(yyvsp[(2) - (2)].prop)->labels, (yyvsp[(1) - (2)].labelref));
-			(yyval.prop) = (yyvsp[(2) - (2)].prop);
+			(yyval.prop) = build_property((yyvsp[-1].propnodename), empty_data);
 		}
+#line 1612 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 18:
-/* Line 1787 of yacc.c  */
-#line 211 "dtc-parser.y"
+#line 212 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.data) = data_merge((yyvsp[(1) - (2)].data), (yyvsp[(2) - (2)].data));
+			(yyval.prop) = build_property_delete((yyvsp[-1].propnodename));
 		}
+#line 1620 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 19:
-/* Line 1787 of yacc.c  */
-#line 215 "dtc-parser.y"
+#line 216 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.data) = data_merge((yyvsp[(1) - (3)].data), (yyvsp[(2) - (3)].array).data);
+			add_label(&(yyvsp[0].prop)->labels, (yyvsp[-1].labelref));
+			(yyval.prop) = (yyvsp[0].prop);
 		}
+#line 1629 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 20:
-/* Line 1787 of yacc.c  */
-#line 219 "dtc-parser.y"
+#line 224 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.data) = data_merge((yyvsp[(1) - (4)].data), (yyvsp[(3) - (4)].data));
+			(yyval.data) = data_merge((yyvsp[-1].data), (yyvsp[0].data));
 		}
+#line 1637 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 21:
-/* Line 1787 of yacc.c  */
-#line 223 "dtc-parser.y"
+#line 228 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.data) = data_add_marker((yyvsp[(1) - (2)].data), REF_PATH, (yyvsp[(2) - (2)].labelref));
+			(yyval.data) = data_merge((yyvsp[-2].data), (yyvsp[-1].array).data);
 		}
+#line 1645 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 22:
-/* Line 1787 of yacc.c  */
-#line 227 "dtc-parser.y"
+#line 232 "dtc-parser.y" /* yacc.c:1646  */
     {
-			FILE *f = srcfile_relative_open((yyvsp[(4) - (9)].data).val, NULL);
+			(yyval.data) = data_merge((yyvsp[-3].data), (yyvsp[-1].data));
+		}
+#line 1653 "dtc-parser.tab.c" /* yacc.c:1646  */
+    break;
+
+  case 23:
+#line 236 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			(yyval.data) = data_add_marker((yyvsp[-1].data), REF_PATH, (yyvsp[0].labelref));
+		}
+#line 1661 "dtc-parser.tab.c" /* yacc.c:1646  */
+    break;
+
+  case 24:
+#line 240 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			FILE *f = srcfile_relative_open((yyvsp[-5].data).val, NULL);
 			struct data d;
 
-			if ((yyvsp[(6) - (9)].integer) != 0)
-				if (fseek(f, (yyvsp[(6) - (9)].integer), SEEK_SET) != 0)
-					print_error("Couldn't seek to offset %llu in \"%s\": %s",
-						     (unsigned long long)(yyvsp[(6) - (9)].integer),
-						     (yyvsp[(4) - (9)].data).val,
-						     strerror(errno));
+			if ((yyvsp[-3].integer) != 0)
+				if (fseek(f, (yyvsp[-3].integer), SEEK_SET) != 0)
+					die("Couldn't seek to offset %llu in \"%s\": %s",
+					    (unsigned long long)(yyvsp[-3].integer), (yyvsp[-5].data).val,
+					    strerror(errno));
 
-			d = data_copy_file(f, (yyvsp[(8) - (9)].integer));
+			d = data_copy_file(f, (yyvsp[-1].integer));
 
-			(yyval.data) = data_merge((yyvsp[(1) - (9)].data), d);
+			(yyval.data) = data_merge((yyvsp[-8].data), d);
 			fclose(f);
 		}
+#line 1681 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 23:
-/* Line 1787 of yacc.c  */
-#line 244 "dtc-parser.y"
+  case 25:
+#line 256 "dtc-parser.y" /* yacc.c:1646  */
     {
-			FILE *f = srcfile_relative_open((yyvsp[(4) - (5)].data).val, NULL);
+			FILE *f = srcfile_relative_open((yyvsp[-1].data).val, NULL);
 			struct data d = empty_data;
 
 			d = data_copy_file(f, -1);
 
-			(yyval.data) = data_merge((yyvsp[(1) - (5)].data), d);
+			(yyval.data) = data_merge((yyvsp[-4].data), d);
 			fclose(f);
 		}
+#line 1695 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 24:
-/* Line 1787 of yacc.c  */
-#line 254 "dtc-parser.y"
+  case 26:
+#line 266 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.data) = data_add_marker((yyvsp[(1) - (2)].data), LABEL, (yyvsp[(2) - (2)].labelref));
+			(yyval.data) = data_add_marker((yyvsp[-1].data), LABEL, (yyvsp[0].labelref));
 		}
+#line 1703 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 25:
-/* Line 1787 of yacc.c  */
-#line 261 "dtc-parser.y"
+  case 27:
+#line 273 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = empty_data;
 		}
+#line 1711 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 26:
-/* Line 1787 of yacc.c  */
-#line 265 "dtc-parser.y"
+  case 28:
+#line 277 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.data) = (yyvsp[(1) - (2)].data);
+			(yyval.data) = (yyvsp[-1].data);
 		}
+#line 1719 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 27:
-/* Line 1787 of yacc.c  */
-#line 269 "dtc-parser.y"
+  case 29:
+#line 281 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.data) = data_add_marker((yyvsp[(1) - (2)].data), LABEL, (yyvsp[(2) - (2)].labelref));
+			(yyval.data) = data_add_marker((yyvsp[-1].data), LABEL, (yyvsp[0].labelref));
 		}
+#line 1727 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 28:
-/* Line 1787 of yacc.c  */
-#line 276 "dtc-parser.y"
+  case 30:
+#line 288 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.array).data = empty_data;
-			(yyval.array).bits = eval_literal((yyvsp[(2) - (3)].literal), 0, 7);
+			unsigned long long bits;
 
-			if (((yyval.array).bits !=  8) &&
-			    ((yyval.array).bits != 16) &&
-			    ((yyval.array).bits != 32) &&
-			    ((yyval.array).bits != 64))
-			{
-				print_error("Only 8, 16, 32 and 64-bit elements"
-					    " are currently supported");
-				(yyval.array).bits = 32;
+			bits = (yyvsp[-1].integer);
+
+			if ((bits !=  8) && (bits != 16) &&
+			    (bits != 32) && (bits != 64)) {
+				ERROR(&(yylsp[-1]), "Array elements must be"
+				      " 8, 16, 32 or 64-bits");
+				bits = 32;
 			}
+
+			(yyval.array).data = empty_data;
+			(yyval.array).bits = bits;
 		}
+#line 1747 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 29:
-/* Line 1787 of yacc.c  */
-#line 291 "dtc-parser.y"
+  case 31:
+#line 304 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.array).data = empty_data;
 			(yyval.array).bits = 32;
 		}
+#line 1756 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 30:
-/* Line 1787 of yacc.c  */
-#line 296 "dtc-parser.y"
+  case 32:
+#line 309 "dtc-parser.y" /* yacc.c:1646  */
     {
-			if ((yyvsp[(1) - (2)].array).bits < 64) {
-				uint64_t mask = (1ULL << (yyvsp[(1) - (2)].array).bits) - 1;
+			if ((yyvsp[-1].array).bits < 64) {
+				uint64_t mask = (1ULL << (yyvsp[-1].array).bits) - 1;
 				/*
 				 * Bits above mask must either be all zero
 				 * (positive within range of mask) or all one
@@ -1801,275 +1768,258 @@
 				 * within the mask to one (i.e. | in the
 				 * mask), all bits are one.
 				 */
-				if (((yyvsp[(2) - (2)].integer) > mask) && (((yyvsp[(2) - (2)].integer) | mask) != -1ULL))
-					print_error(
-						"integer value out of range "
-						"%016lx (%d bits)", (yyvsp[(1) - (2)].array).bits);
+				if (((yyvsp[0].integer) > mask) && (((yyvsp[0].integer) | mask) != -1ULL))
+					ERROR(&(yylsp[0]), "Value out of range for"
+					      " %d-bit array element", (yyvsp[-1].array).bits);
 			}
 
-			(yyval.array).data = data_append_integer((yyvsp[(1) - (2)].array).data, (yyvsp[(2) - (2)].integer), (yyvsp[(1) - (2)].array).bits);
+			(yyval.array).data = data_append_integer((yyvsp[-1].array).data, (yyvsp[0].integer), (yyvsp[-1].array).bits);
 		}
+#line 1779 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 31:
-/* Line 1787 of yacc.c  */
-#line 316 "dtc-parser.y"
+  case 33:
+#line 328 "dtc-parser.y" /* yacc.c:1646  */
     {
-			uint64_t val = ~0ULL >> (64 - (yyvsp[(1) - (2)].array).bits);
+			uint64_t val = ~0ULL >> (64 - (yyvsp[-1].array).bits);
 
-			if ((yyvsp[(1) - (2)].array).bits == 32)
-				(yyvsp[(1) - (2)].array).data = data_add_marker((yyvsp[(1) - (2)].array).data,
+			if ((yyvsp[-1].array).bits == 32)
+				(yyvsp[-1].array).data = data_add_marker((yyvsp[-1].array).data,
 							  REF_PHANDLE,
-							  (yyvsp[(2) - (2)].labelref));
+							  (yyvsp[0].labelref));
 			else
-				print_error("References are only allowed in "
+				ERROR(&(yylsp[0]), "References are only allowed in "
 					    "arrays with 32-bit elements.");
 
-			(yyval.array).data = data_append_integer((yyvsp[(1) - (2)].array).data, val, (yyvsp[(1) - (2)].array).bits);
-		}
-    break;
-
-  case 32:
-/* Line 1787 of yacc.c  */
-#line 330 "dtc-parser.y"
-    {
-			(yyval.array).data = data_add_marker((yyvsp[(1) - (2)].array).data, LABEL, (yyvsp[(2) - (2)].labelref));
-		}
-    break;
-
-  case 33:
-/* Line 1787 of yacc.c  */
-#line 337 "dtc-parser.y"
-    {
-			(yyval.integer) = eval_literal((yyvsp[(1) - (1)].literal), 0, 64);
+			(yyval.array).data = data_append_integer((yyvsp[-1].array).data, val, (yyvsp[-1].array).bits);
 		}
+#line 1797 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 34:
-/* Line 1787 of yacc.c  */
-#line 341 "dtc-parser.y"
+#line 342 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.integer) = eval_char_literal((yyvsp[(1) - (1)].literal));
+			(yyval.array).data = data_add_marker((yyvsp[-1].array).data, LABEL, (yyvsp[0].labelref));
 		}
+#line 1805 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 35:
-/* Line 1787 of yacc.c  */
-#line 345 "dtc-parser.y"
+  case 37:
+#line 351 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.integer) = (yyvsp[(2) - (3)].integer);
+			(yyval.integer) = (yyvsp[-1].integer);
 		}
-    break;
-
-  case 38:
-/* Line 1787 of yacc.c  */
-#line 356 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (5)].integer) ? (yyvsp[(3) - (5)].integer) : (yyvsp[(5) - (5)].integer); }
+#line 1813 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 40:
-/* Line 1787 of yacc.c  */
-#line 361 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) || (yyvsp[(3) - (3)].integer); }
+#line 362 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-4].integer) ? (yyvsp[-2].integer) : (yyvsp[0].integer); }
+#line 1819 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 42:
-/* Line 1787 of yacc.c  */
-#line 366 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) && (yyvsp[(3) - (3)].integer); }
+#line 367 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) || (yyvsp[0].integer); }
+#line 1825 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 44:
-/* Line 1787 of yacc.c  */
-#line 371 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) | (yyvsp[(3) - (3)].integer); }
+#line 372 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) && (yyvsp[0].integer); }
+#line 1831 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 46:
-/* Line 1787 of yacc.c  */
-#line 376 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) ^ (yyvsp[(3) - (3)].integer); }
+#line 377 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) | (yyvsp[0].integer); }
+#line 1837 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 48:
-/* Line 1787 of yacc.c  */
-#line 381 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) & (yyvsp[(3) - (3)].integer); }
+#line 382 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) ^ (yyvsp[0].integer); }
+#line 1843 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 50:
-/* Line 1787 of yacc.c  */
-#line 386 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) == (yyvsp[(3) - (3)].integer); }
+#line 387 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) & (yyvsp[0].integer); }
+#line 1849 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 51:
-/* Line 1787 of yacc.c  */
-#line 387 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) != (yyvsp[(3) - (3)].integer); }
+  case 52:
+#line 392 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) == (yyvsp[0].integer); }
+#line 1855 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 53:
-/* Line 1787 of yacc.c  */
-#line 392 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) < (yyvsp[(3) - (3)].integer); }
-    break;
-
-  case 54:
-/* Line 1787 of yacc.c  */
-#line 393 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) > (yyvsp[(3) - (3)].integer); }
+#line 393 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) != (yyvsp[0].integer); }
+#line 1861 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 55:
-/* Line 1787 of yacc.c  */
-#line 394 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) <= (yyvsp[(3) - (3)].integer); }
+#line 398 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) < (yyvsp[0].integer); }
+#line 1867 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 56:
-/* Line 1787 of yacc.c  */
-#line 395 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) >= (yyvsp[(3) - (3)].integer); }
+#line 399 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) > (yyvsp[0].integer); }
+#line 1873 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 57:
-/* Line 1787 of yacc.c  */
-#line 399 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) << (yyvsp[(3) - (3)].integer); }
+#line 400 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) <= (yyvsp[0].integer); }
+#line 1879 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 58:
-/* Line 1787 of yacc.c  */
-#line 400 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) >> (yyvsp[(3) - (3)].integer); }
+#line 401 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) >= (yyvsp[0].integer); }
+#line 1885 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 60:
-/* Line 1787 of yacc.c  */
-#line 405 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) + (yyvsp[(3) - (3)].integer); }
+  case 59:
+#line 405 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) << (yyvsp[0].integer); }
+#line 1891 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 61:
-/* Line 1787 of yacc.c  */
-#line 406 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) - (yyvsp[(3) - (3)].integer); }
+  case 60:
+#line 406 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) >> (yyvsp[0].integer); }
+#line 1897 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 63:
-/* Line 1787 of yacc.c  */
-#line 411 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) * (yyvsp[(3) - (3)].integer); }
+  case 62:
+#line 411 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) + (yyvsp[0].integer); }
+#line 1903 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 64:
-/* Line 1787 of yacc.c  */
-#line 412 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) / (yyvsp[(3) - (3)].integer); }
+  case 63:
+#line 412 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) - (yyvsp[0].integer); }
+#line 1909 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 65:
-/* Line 1787 of yacc.c  */
-#line 413 "dtc-parser.y"
-    { (yyval.integer) = (yyvsp[(1) - (3)].integer) % (yyvsp[(3) - (3)].integer); }
+#line 417 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) * (yyvsp[0].integer); }
+#line 1915 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 68:
-/* Line 1787 of yacc.c  */
-#line 419 "dtc-parser.y"
-    { (yyval.integer) = -(yyvsp[(2) - (2)].integer); }
+  case 66:
+#line 418 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) / (yyvsp[0].integer); }
+#line 1921 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 69:
-/* Line 1787 of yacc.c  */
-#line 420 "dtc-parser.y"
-    { (yyval.integer) = ~(yyvsp[(2) - (2)].integer); }
+  case 67:
+#line 419 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = (yyvsp[-2].integer) % (yyvsp[0].integer); }
+#line 1927 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 70:
-/* Line 1787 of yacc.c  */
-#line 421 "dtc-parser.y"
-    { (yyval.integer) = !(yyvsp[(2) - (2)].integer); }
+#line 425 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = -(yyvsp[0].integer); }
+#line 1933 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 71:
-/* Line 1787 of yacc.c  */
-#line 426 "dtc-parser.y"
-    {
-			(yyval.data) = empty_data;
-		}
+#line 426 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = ~(yyvsp[0].integer); }
+#line 1939 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 72:
-/* Line 1787 of yacc.c  */
-#line 430 "dtc-parser.y"
-    {
-			(yyval.data) = data_append_byte((yyvsp[(1) - (2)].data), (yyvsp[(2) - (2)].byte));
-		}
+#line 427 "dtc-parser.y" /* yacc.c:1646  */
+    { (yyval.integer) = !(yyvsp[0].integer); }
+#line 1945 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 73:
-/* Line 1787 of yacc.c  */
-#line 434 "dtc-parser.y"
+#line 432 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.data) = data_add_marker((yyvsp[(1) - (2)].data), LABEL, (yyvsp[(2) - (2)].labelref));
+			(yyval.data) = empty_data;
 		}
+#line 1953 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 74:
-/* Line 1787 of yacc.c  */
-#line 441 "dtc-parser.y"
+#line 436 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.nodelist) = NULL;
+			(yyval.data) = data_append_byte((yyvsp[-1].data), (yyvsp[0].byte));
 		}
+#line 1961 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 75:
-/* Line 1787 of yacc.c  */
-#line 445 "dtc-parser.y"
+#line 440 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.nodelist) = chain_node((yyvsp[(1) - (2)].node), (yyvsp[(2) - (2)].nodelist));
+			(yyval.data) = data_add_marker((yyvsp[-1].data), LABEL, (yyvsp[0].labelref));
 		}
+#line 1969 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 76:
-/* Line 1787 of yacc.c  */
-#line 449 "dtc-parser.y"
+#line 447 "dtc-parser.y" /* yacc.c:1646  */
     {
-			print_error("syntax error: properties must precede subnodes");
-			YYERROR;
+			(yyval.nodelist) = NULL;
 		}
+#line 1977 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 77:
-/* Line 1787 of yacc.c  */
-#line 457 "dtc-parser.y"
+#line 451 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.node) = name_node((yyvsp[(2) - (2)].node), (yyvsp[(1) - (2)].propnodename));
+			(yyval.nodelist) = chain_node((yyvsp[-1].node), (yyvsp[0].nodelist));
 		}
+#line 1985 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 78:
-/* Line 1787 of yacc.c  */
-#line 461 "dtc-parser.y"
+#line 455 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.node) = name_node(build_node_delete(), (yyvsp[(2) - (3)].propnodename));
+			ERROR(&(yylsp[0]), "Properties must precede subnodes");
+			YYERROR;
 		}
+#line 1994 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 79:
-/* Line 1787 of yacc.c  */
-#line 465 "dtc-parser.y"
+#line 463 "dtc-parser.y" /* yacc.c:1646  */
     {
-			add_label(&(yyvsp[(2) - (2)].node)->labels, (yyvsp[(1) - (2)].labelref));
-			(yyval.node) = (yyvsp[(2) - (2)].node);
+			(yyval.node) = name_node((yyvsp[0].node), (yyvsp[-1].propnodename));
 		}
+#line 2002 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
+  case 80:
+#line 467 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			(yyval.node) = name_node(build_node_delete(), (yyvsp[-1].propnodename));
+		}
+#line 2010 "dtc-parser.tab.c" /* yacc.c:1646  */
+    break;
+
+  case 81:
+#line 471 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			add_label(&(yyvsp[0].node)->labels, (yyvsp[-1].labelref));
+			(yyval.node) = (yyvsp[0].node);
+		}
+#line 2019 "dtc-parser.tab.c" /* yacc.c:1646  */
+    break;
 
-/* Line 1787 of yacc.c  */
-#line 2073 "dtc-parser.tab.c"
+
+#line 2023 "dtc-parser.tab.c" /* yacc.c:1646  */
       default: break;
     }
   /* User semantic actions sometimes alter yychar, and that requires
@@ -2090,8 +2040,9 @@
   YY_STACK_PRINT (yyss, yyssp);
 
   *++yyvsp = yyval;
+  *++yylsp = yyloc;
 
-  /* Now `shift' the result of the reduction.  Determine what state
+  /* Now 'shift' the result of the reduction.  Determine what state
      that goes to, based on the state we popped back to and the rule
      number reduced by.  */
 
@@ -2106,9 +2057,9 @@
   goto yynewstate;
 
 
-/*------------------------------------.
-| yyerrlab -- here on detecting error |
-`------------------------------------*/
+/*--------------------------------------.
+| yyerrlab -- here on detecting error.  |
+`--------------------------------------*/
 yyerrlab:
   /* Make sure we have latest lookahead translation.  See comments at
      user semantic actions for why this is necessary.  */
@@ -2154,25 +2105,25 @@
 #endif
     }
 
-
+  yyerror_range[1] = yylloc;
 
   if (yyerrstatus == 3)
     {
       /* If just tried and failed to reuse lookahead token after an
-	 error, discard it.  */
+         error, discard it.  */
 
       if (yychar <= YYEOF)
-	{
-	  /* Return failure if at end of input.  */
-	  if (yychar == YYEOF)
-	    YYABORT;
-	}
+        {
+          /* Return failure if at end of input.  */
+          if (yychar == YYEOF)
+            YYABORT;
+        }
       else
-	{
-	  yydestruct ("Error: discarding",
-		      yytoken, &yylval);
-	  yychar = YYEMPTY;
-	}
+        {
+          yydestruct ("Error: discarding",
+                      yytoken, &yylval, &yylloc);
+          yychar = YYEMPTY;
+        }
     }
 
   /* Else will try to reuse lookahead token after shifting the error
@@ -2191,7 +2142,8 @@
   if (/*CONSTCOND*/ 0)
      goto yyerrorlab;
 
-  /* Do not reclaim the symbols of the rule which action triggered
+  yyerror_range[1] = yylsp[1-yylen];
+  /* Do not reclaim the symbols of the rule whose action triggered
      this YYERROR.  */
   YYPOPSTACK (yylen);
   yylen = 0;
@@ -2204,29 +2156,29 @@
 | yyerrlab1 -- common code for both syntax error and YYERROR.  |
 `-------------------------------------------------------------*/
 yyerrlab1:
-  yyerrstatus = 3;	/* Each real token shifted decrements this.  */
+  yyerrstatus = 3;      /* Each real token shifted decrements this.  */
 
   for (;;)
     {
       yyn = yypact[yystate];
       if (!yypact_value_is_default (yyn))
-	{
-	  yyn += YYTERROR;
-	  if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
-	    {
-	      yyn = yytable[yyn];
-	      if (0 < yyn)
-		break;
-	    }
-	}
+        {
+          yyn += YYTERROR;
+          if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
+            {
+              yyn = yytable[yyn];
+              if (0 < yyn)
+                break;
+            }
+        }
 
       /* Pop the current state because it cannot handle the error token.  */
       if (yyssp == yyss)
-	YYABORT;
-
+        YYABORT;
 
+      yyerror_range[1] = *yylsp;
       yydestruct ("Error: popping",
-		  yystos[yystate], yyvsp);
+                  yystos[yystate], yyvsp, yylsp);
       YYPOPSTACK (1);
       yystate = *yyssp;
       YY_STACK_PRINT (yyss, yyssp);
@@ -2236,6 +2188,11 @@
   *++yyvsp = yylval;
   YY_IGNORE_MAYBE_UNINITIALIZED_END
 
+  yyerror_range[2] = yylloc;
+  /* Using YYLLOC is tempting, but would change the location of
+     the lookahead.  YYLOC is available though.  */
+  YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
+  *++yylsp = yyloc;
 
   /* Shift the error token.  */
   YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
@@ -2275,16 +2232,16 @@
          user semantic actions for why this is necessary.  */
       yytoken = YYTRANSLATE (yychar);
       yydestruct ("Cleanup: discarding lookahead",
-                  yytoken, &yylval);
+                  yytoken, &yylval, &yylloc);
     }
-  /* Do not reclaim the symbols of the rule which action triggered
+  /* Do not reclaim the symbols of the rule whose action triggered
      this YYABORT or YYACCEPT.  */
   YYPOPSTACK (yylen);
   YY_STACK_PRINT (yyss, yyssp);
   while (yyssp != yyss)
     {
       yydestruct ("Cleanup: popping",
-		  yystos[*yyssp], yyvsp);
+                  yystos[*yyssp], yyvsp, yylsp);
       YYPOPSTACK (1);
     }
 #ifndef yyoverflow
@@ -2295,72 +2252,12 @@
   if (yymsg != yymsgbuf)
     YYSTACK_FREE (yymsg);
 #endif
-  /* Make sure YYID is used.  */
-  return YYID (yyresult);
+  return yyresult;
 }
+#line 477 "dtc-parser.y" /* yacc.c:1906  */
 
 
-/* Line 2050 of yacc.c  */
-#line 471 "dtc-parser.y"
-
-
-void print_error(char const *fmt, ...)
+void yyerror(char const *s)
 {
-	va_list va;
-
-	va_start(va, fmt);
-	srcpos_verror(&yylloc, fmt, va);
-	va_end(va);
-
-	treesource_error = 1;
-}
-
-void yyerror(char const *s) {
-	print_error("%s", s);
-}
-
-static unsigned long long eval_literal(const char *s, int base, int bits)
-{
-	unsigned long long val;
-	char *e;
-
-	errno = 0;
-	val = strtoull(s, &e, base);
-	if (*e) {
-		size_t uls = strspn(e, "UL");
-		if (e[uls])
-			print_error("bad characters in literal");
-	}
-	if ((errno == ERANGE)
-		 || ((bits < 64) && (val >= (1ULL << bits))))
-		print_error("literal out of range");
-	else if (errno != 0)
-		print_error("bad literal");
-	return val;
-}
-
-static unsigned char eval_char_literal(const char *s)
-{
-	int i = 1;
-	char c = s[0];
-
-	if (c == '\0')
-	{
-		print_error("empty character literal");
-		return 0;
-	}
-
-	/*
-	 * If the first character in the character literal is a \ then process
-	 * the remaining characters as an escape encoding. If the first
-	 * character is neither an escape or a terminator it should be the only
-	 * character in the literal and will be returned.
-	 */
-	if (c == '\\')
-		c = get_escape_char(s, &i);
-
-	if (s[i] != '\0')
-		print_error("malformed character literal");
-
-	return c;
+	ERROR(&yylloc, "%s", s);
 }
diff -Nur linux-3.18.10/scripts/dtc/dtc-parser.tab.h_shipped linux-rpi/scripts/dtc/dtc-parser.tab.h_shipped
--- linux-3.18.10/scripts/dtc/dtc-parser.tab.h_shipped	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/dtc-parser.tab.h_shipped	2015-03-26 11:47:02.296245591 +0100
@@ -1,19 +1,19 @@
-/* A Bison parser, made by GNU Bison 2.7.12-4996.  */
+/* A Bison parser, made by GNU Bison 3.0.2.  */
 
 /* Bison interface for Yacc-like parsers in C
-   
-      Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, Inc.
-   
+
+   Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, Inc.
+
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
-   
+
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
-   
+
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
@@ -26,13 +26,13 @@
    special exception, which will cause the skeleton and the resulting
    Bison output files to be licensed under the GNU General Public
    License without this special exception.
-   
+
    This special exception was added by the Free Software Foundation in
    version 2.2 of Bison.  */
 
 #ifndef YY_YY_DTC_PARSER_TAB_H_INCLUDED
 # define YY_YY_DTC_PARSER_TAB_H_INCLUDED
-/* Enabling traces.  */
+/* Debug traces.  */
 #ifndef YYDEBUG
 # define YYDEBUG 0
 #endif
@@ -40,48 +40,45 @@
 extern int yydebug;
 #endif
 
-/* Tokens.  */
+/* Token type.  */
 #ifndef YYTOKENTYPE
 # define YYTOKENTYPE
-   /* Put the tokens into the symbol table, so that GDB and other debuggers
-      know about them.  */
-   enum yytokentype {
-     DT_V1 = 258,
-     DT_MEMRESERVE = 259,
-     DT_LSHIFT = 260,
-     DT_RSHIFT = 261,
-     DT_LE = 262,
-     DT_GE = 263,
-     DT_EQ = 264,
-     DT_NE = 265,
-     DT_AND = 266,
-     DT_OR = 267,
-     DT_BITS = 268,
-     DT_DEL_PROP = 269,
-     DT_DEL_NODE = 270,
-     DT_PROPNODENAME = 271,
-     DT_LITERAL = 272,
-     DT_CHAR_LITERAL = 273,
-     DT_BASE = 274,
-     DT_BYTE = 275,
-     DT_STRING = 276,
-     DT_LABEL = 277,
-     DT_REF = 278,
-     DT_INCBIN = 279
-   };
+  enum yytokentype
+  {
+    DT_V1 = 258,
+    DT_PLUGIN = 259,
+    DT_MEMRESERVE = 260,
+    DT_LSHIFT = 261,
+    DT_RSHIFT = 262,
+    DT_LE = 263,
+    DT_GE = 264,
+    DT_EQ = 265,
+    DT_NE = 266,
+    DT_AND = 267,
+    DT_OR = 268,
+    DT_BITS = 269,
+    DT_DEL_PROP = 270,
+    DT_DEL_NODE = 271,
+    DT_PROPNODENAME = 272,
+    DT_LITERAL = 273,
+    DT_CHAR_LITERAL = 274,
+    DT_BYTE = 275,
+    DT_STRING = 276,
+    DT_LABEL = 277,
+    DT_REF = 278,
+    DT_INCBIN = 279
+  };
 #endif
 
-
+/* Value type.  */
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-typedef union YYSTYPE
+typedef union YYSTYPE YYSTYPE;
+union YYSTYPE
 {
-/* Line 2053 of yacc.c  */
-#line 40 "dtc-parser.y"
+#line 39 "dtc-parser.y" /* yacc.c:1909  */
 
 	char *propnodename;
-	char *literal;
 	char *labelref;
-	unsigned int cbase;
 	uint8_t byte;
 	struct data data;
 
@@ -96,30 +93,31 @@
 	struct node *nodelist;
 	struct reserve_info *re;
 	uint64_t integer;
+	int is_plugin;
 
-
-/* Line 2053 of yacc.c  */
-#line 103 "dtc-parser.tab.h"
-} YYSTYPE;
+#line 99 "dtc-parser.tab.h" /* yacc.c:1909  */
+};
 # define YYSTYPE_IS_TRIVIAL 1
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
 # define YYSTYPE_IS_DECLARED 1
 #endif
 
-extern YYSTYPE yylval;
-
-#ifdef YYPARSE_PARAM
-#if defined __STDC__ || defined __cplusplus
-int yyparse (void *YYPARSE_PARAM);
-#else
-int yyparse ();
+/* Location type.  */
+#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
+typedef struct YYLTYPE YYLTYPE;
+struct YYLTYPE
+{
+  int first_line;
+  int first_column;
+  int last_line;
+  int last_column;
+};
+# define YYLTYPE_IS_DECLARED 1
+# define YYLTYPE_IS_TRIVIAL 1
 #endif
-#else /* ! YYPARSE_PARAM */
-#if defined __STDC__ || defined __cplusplus
+
+
+extern YYSTYPE yylval;
+extern YYLTYPE yylloc;
 int yyparse (void);
-#else
-int yyparse ();
-#endif
-#endif /* ! YYPARSE_PARAM */
 
 #endif /* !YY_YY_DTC_PARSER_TAB_H_INCLUDED  */
diff -Nur linux-3.18.10/scripts/dtc/dtc-parser.y linux-rpi/scripts/dtc/dtc-parser.y
--- linux-3.18.10/scripts/dtc/dtc-parser.y	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/dtc-parser.y	2015-03-26 11:47:02.296245591 +0100
@@ -17,31 +17,28 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  *                                                                   USA
  */
-
 %{
 #include <stdio.h>
+#include <inttypes.h>
 
 #include "dtc.h"
 #include "srcpos.h"
 
-YYLTYPE yylloc;
-
 extern int yylex(void);
-extern void print_error(char const *fmt, ...);
 extern void yyerror(char const *s);
+#define ERROR(loc, ...) \
+	do { \
+		srcpos_error((loc), "Error", __VA_ARGS__); \
+		treesource_error = true; \
+	} while (0)
 
 extern struct boot_info *the_boot_info;
-extern int treesource_error;
-
-static unsigned long long eval_literal(const char *s, int base, int bits);
-static unsigned char eval_char_literal(const char *s);
+extern bool treesource_error;
 %}
 
 %union {
 	char *propnodename;
-	char *literal;
 	char *labelref;
-	unsigned int cbase;
 	uint8_t byte;
 	struct data data;
 
@@ -56,18 +53,19 @@
 	struct node *nodelist;
 	struct reserve_info *re;
 	uint64_t integer;
+	int is_plugin;
 }
 
 %token DT_V1
+%token DT_PLUGIN
 %token DT_MEMRESERVE
 %token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR
 %token DT_BITS
 %token DT_DEL_PROP
 %token DT_DEL_NODE
 %token <propnodename> DT_PROPNODENAME
-%token <literal> DT_LITERAL
-%token <literal> DT_CHAR_LITERAL
-%token <cbase> DT_BASE
+%token <integer> DT_LITERAL
+%token <integer> DT_CHAR_LITERAL
 %token <byte> DT_BYTE
 %token <data> DT_STRING
 %token <labelref> DT_LABEL
@@ -76,6 +74,7 @@
 
 %type <data> propdata
 %type <data> propdataprefix
+%type <is_plugin> plugindecl
 %type <re> memreserve
 %type <re> memreserves
 %type <array> arrayprefix
@@ -106,10 +105,23 @@
 %%
 
 sourcefile:
-	  DT_V1 ';' memreserves devicetree
+	  DT_V1 ';' plugindecl memreserves devicetree
+		{
+			$5->is_plugin = $3;
+			$5->is_root = 1;
+			the_boot_info = build_boot_info($4, $5,
+							guess_boot_cpuid($5));
+		}
+	;
+
+plugindecl:
+	/* empty */
+		{
+			$$ = 0;
+		}
+	| DT_PLUGIN ';'
 		{
-			the_boot_info = build_boot_info($3, $4,
-							guess_boot_cpuid($4));
+			$$ = 1;
 		}
 	;
 
@@ -152,17 +164,18 @@
 			if (target)
 				merge_nodes(target, $3);
 			else
-				print_error("label or path, '%s', not found", $2);
+				ERROR(&@2, "Label or path %s not found", $2);
 			$$ = $1;
 		}
 	| devicetree DT_DEL_NODE DT_REF ';'
 		{
 			struct node *target = get_node_by_ref($1, $3);
 
-			if (!target)
-				print_error("label or path, '%s', not found", $3);
-			else
+			if (target)
 				delete_node(target);
+			else
+				ERROR(&@3, "Label or path %s not found", $3);
+
 
 			$$ = $1;
 		}
@@ -230,10 +243,9 @@
 
 			if ($6 != 0)
 				if (fseek(f, $6, SEEK_SET) != 0)
-					print_error("Couldn't seek to offset %llu in \"%s\": %s",
-						     (unsigned long long)$6,
-						     $4.val,
-						     strerror(errno));
+					die("Couldn't seek to offset %llu in \"%s\": %s",
+					    (unsigned long long)$6, $4.val,
+					    strerror(errno));
 
 			d = data_copy_file(f, $8);
 
@@ -274,18 +286,19 @@
 arrayprefix:
 	DT_BITS DT_LITERAL '<'
 		{
-			$$.data = empty_data;
-			$$.bits = eval_literal($2, 0, 7);
+			unsigned long long bits;
 
-			if (($$.bits !=  8) &&
-			    ($$.bits != 16) &&
-			    ($$.bits != 32) &&
-			    ($$.bits != 64))
-			{
-				print_error("Only 8, 16, 32 and 64-bit elements"
-					    " are currently supported");
-				$$.bits = 32;
+			bits = $2;
+
+			if ((bits !=  8) && (bits != 16) &&
+			    (bits != 32) && (bits != 64)) {
+				ERROR(&@2, "Array elements must be"
+				      " 8, 16, 32 or 64-bits");
+				bits = 32;
 			}
+
+			$$.data = empty_data;
+			$$.bits = bits;
 		}
 	| '<'
 		{
@@ -305,9 +318,8 @@
 				 * mask), all bits are one.
 				 */
 				if (($2 > mask) && (($2 | mask) != -1ULL))
-					print_error(
-						"integer value out of range "
-						"%016lx (%d bits)", $1.bits);
+					ERROR(&@2, "Value out of range for"
+					      " %d-bit array element", $1.bits);
 			}
 
 			$$.data = data_append_integer($1.data, $2, $1.bits);
@@ -321,7 +333,7 @@
 							  REF_PHANDLE,
 							  $2);
 			else
-				print_error("References are only allowed in "
+				ERROR(&@2, "References are only allowed in "
 					    "arrays with 32-bit elements.");
 
 			$$.data = data_append_integer($1.data, val, $1.bits);
@@ -334,13 +346,7 @@
 
 integer_prim:
 	  DT_LITERAL
-		{
-			$$ = eval_literal($1, 0, 64);
-		}
 	| DT_CHAR_LITERAL
-		{
-			$$ = eval_char_literal($1);
-		}
 	| '(' integer_expr ')'
 		{
 			$$ = $2;
@@ -447,7 +453,7 @@
 		}
 	| subnode propdef
 		{
-			print_error("syntax error: properties must precede subnodes");
+			ERROR(&@2, "Properties must precede subnodes");
 			YYERROR;
 		}
 	;
@@ -470,63 +476,7 @@
 
 %%
 
-void print_error(char const *fmt, ...)
+void yyerror(char const *s)
 {
-	va_list va;
-
-	va_start(va, fmt);
-	srcpos_verror(&yylloc, fmt, va);
-	va_end(va);
-
-	treesource_error = 1;
-}
-
-void yyerror(char const *s) {
-	print_error("%s", s);
-}
-
-static unsigned long long eval_literal(const char *s, int base, int bits)
-{
-	unsigned long long val;
-	char *e;
-
-	errno = 0;
-	val = strtoull(s, &e, base);
-	if (*e) {
-		size_t uls = strspn(e, "UL");
-		if (e[uls])
-			print_error("bad characters in literal");
-	}
-	if ((errno == ERANGE)
-		 || ((bits < 64) && (val >= (1ULL << bits))))
-		print_error("literal out of range");
-	else if (errno != 0)
-		print_error("bad literal");
-	return val;
-}
-
-static unsigned char eval_char_literal(const char *s)
-{
-	int i = 1;
-	char c = s[0];
-
-	if (c == '\0')
-	{
-		print_error("empty character literal");
-		return 0;
-	}
-
-	/*
-	 * If the first character in the character literal is a \ then process
-	 * the remaining characters as an escape encoding. If the first
-	 * character is neither an escape or a terminator it should be the only
-	 * character in the literal and will be returned.
-	 */
-	if (c == '\\')
-		c = get_escape_char(s, &i);
-
-	if (s[i] != '\0')
-		print_error("malformed character literal");
-
-	return c;
+	ERROR(&yylloc, "%s", s);
 }
diff -Nur linux-3.18.10/scripts/dtc/flattree.c linux-rpi/scripts/dtc/flattree.c
--- linux-3.18.10/scripts/dtc/flattree.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/flattree.c	2015-03-26 11:47:02.300245594 +0100
@@ -261,7 +261,13 @@
 {
 	struct property *prop;
 	struct node *child;
-	int seen_name_prop = 0;
+	bool seen_name_prop = false;
+	struct symbol *sym;
+	struct fixup *f;
+	struct fixup_entry *fe;
+	char *name, *s;
+	const char *fullpath;
+	int namesz, nameoff, vallen;
 
 	if (tree->deleted)
 		return;
@@ -276,10 +282,8 @@
 	emit->align(etarget, sizeof(cell_t));
 
 	for_each_property(tree, prop) {
-		int nameoff;
-
 		if (streq(prop->name, "name"))
-			seen_name_prop = 1;
+			seen_name_prop = true;
 
 		nameoff = stringtable_insert(strbuf, prop->name);
 
@@ -310,6 +314,139 @@
 		flatten_tree(child, emit, etarget, strbuf, vi);
 	}
 
+	if (!symbol_fixup_support)
+		goto no_symbols;
+
+	/* add the symbol nodes (if any) */
+	if (tree->symbols) {
+
+		emit->beginnode(etarget, NULL);
+		emit->string(etarget, "__symbols__", 0);
+		emit->align(etarget, sizeof(cell_t));
+
+		for_each_symbol(tree, sym) {
+
+			vallen = strlen(sym->node->fullpath);
+
+			nameoff = stringtable_insert(strbuf, sym->label->label);
+
+			emit->property(etarget, NULL);
+			emit->cell(etarget, vallen + 1);
+			emit->cell(etarget, nameoff);
+
+			if ((vi->flags & FTF_VARALIGN) && vallen >= 8)
+				emit->align(etarget, 8);
+
+			emit->string(etarget, sym->node->fullpath,
+					strlen(sym->node->fullpath));
+			emit->align(etarget, sizeof(cell_t));
+		}
+
+		emit->endnode(etarget, NULL);
+	}
+
+	/* add the fixup nodes */
+	if (tree->fixups) {
+
+		/* emit the external fixups */
+		emit->beginnode(etarget, NULL);
+		emit->string(etarget, "__fixups__", 0);
+		emit->align(etarget, sizeof(cell_t));
+
+		for_each_fixup(tree, f) {
+
+			namesz = 0;
+			for_each_fixup_entry(f, fe) {
+				fullpath = fe->node->fullpath;
+				if (fullpath[0] == '\0')
+					fullpath = "/";
+				namesz += strlen(fullpath) + 1;
+				namesz += strlen(fe->prop->name) + 1;
+				namesz += 32;	/* space for :<number> + '\0' */
+			}
+
+			name = xmalloc(namesz);
+
+			s = name;
+			for_each_fixup_entry(f, fe) {
+				fullpath = fe->node->fullpath;
+				if (fullpath[0] == '\0')
+					fullpath = "/";
+				snprintf(s, name + namesz - s, "%s:%s:%d",
+						fullpath,
+						fe->prop->name, fe->offset);
+				s += strlen(s) + 1;
+			}
+
+			nameoff = stringtable_insert(strbuf, f->ref);
+			vallen = s - name - 1;
+
+			emit->property(etarget, NULL);
+			emit->cell(etarget, vallen + 1);
+			emit->cell(etarget, nameoff);
+
+			if ((vi->flags & FTF_VARALIGN) && vallen >= 8)
+				emit->align(etarget, 8);
+
+			emit->string(etarget, name, vallen);
+			emit->align(etarget, sizeof(cell_t));
+
+			free(name);
+		}
+
+		emit->endnode(etarget, tree->labels);
+	}
+
+	/* add the local fixup property */
+	if (tree->local_fixups) {
+
+		/* emit the external fixups */
+		emit->beginnode(etarget, NULL);
+		emit->string(etarget, "__local_fixups__", 0);
+		emit->align(etarget, sizeof(cell_t));
+
+		namesz = 0;
+		for_each_local_fixup_entry(tree, fe) {
+			fullpath = fe->node->fullpath;
+			if (fullpath[0] == '\0')
+				fullpath = "/";
+			namesz += strlen(fullpath) + 1;
+			namesz += strlen(fe->prop->name) + 1;
+			namesz += 32;	/* space for :<number> + '\0' */
+		}
+
+		name = xmalloc(namesz);
+
+		s = name;
+		for_each_local_fixup_entry(tree, fe) {
+			fullpath = fe->node->fullpath;
+			if (fullpath[0] == '\0')
+				fullpath = "/";
+			snprintf(s, name + namesz - s, "%s:%s:%d",
+					fullpath, fe->prop->name,
+					fe->offset);
+			s += strlen(s) + 1;
+		}
+
+		nameoff = stringtable_insert(strbuf, "fixup");
+		vallen = s - name - 1;
+
+		emit->property(etarget, NULL);
+		emit->cell(etarget, vallen + 1);
+		emit->cell(etarget, nameoff);
+
+		if ((vi->flags & FTF_VARALIGN) && vallen >= 8)
+			emit->align(etarget, 8);
+
+		emit->string(etarget, name, vallen);
+		emit->align(etarget, sizeof(cell_t));
+
+		free(name);
+
+		emit->endnode(etarget, tree->labels);
+	}
+
+no_symbols:
 	emit->endnode(etarget, tree->labels);
 }
 
diff -Nur linux-3.18.10/scripts/dtc/fstree.c linux-rpi/scripts/dtc/fstree.c
--- linux-3.18.10/scripts/dtc/fstree.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/fstree.c	2015-03-26 11:47:02.300245594 +0100
@@ -37,26 +37,26 @@
 	tree = build_node(NULL, NULL);
 
 	while ((de = readdir(d)) != NULL) {
-		char *tmpnam;
+		char *tmpname;
 
 		if (streq(de->d_name, ".")
 		    || streq(de->d_name, ".."))
 			continue;
 
-		tmpnam = join_path(dirname, de->d_name);
+		tmpname = join_path(dirname, de->d_name);
 
-		if (lstat(tmpnam, &st) < 0)
-			die("stat(%s): %s\n", tmpnam, strerror(errno));
+		if (lstat(tmpname, &st) < 0)
+			die("stat(%s): %s\n", tmpname, strerror(errno));
 
 		if (S_ISREG(st.st_mode)) {
 			struct property *prop;
 			FILE *pfile;
 
-			pfile = fopen(tmpnam, "r");
+			pfile = fopen(tmpname, "rb");
 			if (! pfile) {
 				fprintf(stderr,
 					"WARNING: Cannot open %s: %s\n",
-					tmpnam, strerror(errno));
+					tmpname, strerror(errno));
 			} else {
 				prop = build_property(xstrdup(de->d_name),
 						      data_copy_file(pfile,
@@ -67,12 +67,12 @@
 		} else if (S_ISDIR(st.st_mode)) {
 			struct node *newchild;
 
-			newchild = read_fstree(tmpnam);
+			newchild = read_fstree(tmpname);
 			newchild = name_node(newchild, xstrdup(de->d_name));
 			add_child(tree, newchild);
 		}
 
-		free(tmpnam);
+		free(tmpname);
 	}
 
 	closedir(d);
diff -Nur linux-3.18.10/scripts/dtc/livetree.c linux-rpi/scripts/dtc/livetree.c
--- linux-3.18.10/scripts/dtc/livetree.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/livetree.c	2015-03-26 11:47:02.300245594 +0100
@@ -511,7 +511,9 @@
 
 struct node *get_node_by_ref(struct node *tree, const char *ref)
 {
-	if (ref[0] == '/')
+	if (streq(ref, "/"))
+		return tree;
+	else if (ref[0] == '/')
 		return get_node_by_path(tree, ref);
 	else
 		return get_node_by_label(tree, ref);
diff -Nur linux-3.18.10/scripts/dtc/srcpos.c linux-rpi/scripts/dtc/srcpos.c
--- linux-3.18.10/scripts/dtc/srcpos.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/srcpos.c	2015-03-26 11:47:02.300245594 +0100
@@ -34,7 +34,7 @@
 static struct search_path *search_path_head, **search_path_tail;
 
 
-static char *dirname(const char *path)
+static char *get_dirname(const char *path)
 {
 	const char *slash = strrchr(path, '/');
 
@@ -77,7 +77,7 @@
 	else
 		fullname = join_path(dirname, fname);
 
-	*fp = fopen(fullname, "r");
+	*fp = fopen(fullname, "rb");
 	if (!*fp) {
 		free(fullname);
 		fullname = NULL;
@@ -150,7 +150,7 @@
 	srcfile = xmalloc(sizeof(*srcfile));
 
 	srcfile->f = srcfile_relative_open(fname, &srcfile->name);
-	srcfile->dir = dirname(srcfile->name);
+	srcfile->dir = get_dirname(srcfile->name);
 	srcfile->prev = current_srcfile;
 
 	srcfile->lineno = 1;
@@ -159,7 +159,7 @@
 	current_srcfile = srcfile;
 }
 
-int srcfile_pop(void)
+bool srcfile_pop(void)
 {
 	struct srcfile_state *srcfile = current_srcfile;
 
@@ -177,7 +177,7 @@
 	 * fix this we could either allocate all the files from a
 	 * table, or use a pool allocator. */
 
-	return current_srcfile ? 1 : 0;
+	return current_srcfile ? true : false;
 }
 
 void srcfile_add_search_path(const char *dirname)
@@ -290,42 +290,27 @@
 	return pos_str;
 }
 
-void
-srcpos_verror(struct srcpos *pos, char const *fmt, va_list va)
+void srcpos_verror(struct srcpos *pos, const char *prefix,
+		   const char *fmt, va_list va)
 {
-       const char *srcstr;
-
-       srcstr = srcpos_string(pos);
+	char *srcstr;
 
-       fprintf(stderr, "Error: %s ", srcstr);
-       vfprintf(stderr, fmt, va);
-       fprintf(stderr, "\n");
-}
+	srcstr = srcpos_string(pos);
 
-void
-srcpos_error(struct srcpos *pos, char const *fmt, ...)
-{
-	va_list va;
+	fprintf(stderr, "%s: %s ", prefix, srcstr);
+	vfprintf(stderr, fmt, va);
+	fprintf(stderr, "\n");
 
-	va_start(va, fmt);
-	srcpos_verror(pos, fmt, va);
-	va_end(va);
+	free(srcstr);
 }
 
-
-void
-srcpos_warn(struct srcpos *pos, char const *fmt, ...)
+void srcpos_error(struct srcpos *pos, const char *prefix,
+		  const char *fmt, ...)
 {
-	const char *srcstr;
 	va_list va;
-	va_start(va, fmt);
-
-	srcstr = srcpos_string(pos);
-
-	fprintf(stderr, "Warning: %s ", srcstr);
-	vfprintf(stderr, fmt, va);
-	fprintf(stderr, "\n");
 
+	va_start(va, fmt);
+	srcpos_verror(pos, prefix, fmt, va);
 	va_end(va);
 }
 
diff -Nur linux-3.18.10/scripts/dtc/srcpos.h linux-rpi/scripts/dtc/srcpos.h
--- linux-3.18.10/scripts/dtc/srcpos.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/srcpos.h	2015-03-26 11:47:02.300245594 +0100
@@ -21,6 +21,7 @@
 #define _SRCPOS_H_
 
 #include <stdio.h>
+#include <stdbool.h>
 
 struct srcfile_state {
 	FILE *f;
@@ -55,7 +56,7 @@
 FILE *srcfile_relative_open(const char *fname, char **fullnamep);
 
 void srcfile_push(const char *fname);
-int srcfile_pop(void);
+bool srcfile_pop(void);
 
 /**
  * Add a new directory to the search path for input files
@@ -106,12 +107,12 @@
 extern char *srcpos_string(struct srcpos *pos);
 extern void srcpos_dump(struct srcpos *pos);
 
-extern void srcpos_verror(struct srcpos *pos, char const *, va_list va)
-     __attribute__((format(printf, 2, 0)));
-extern void srcpos_error(struct srcpos *pos, char const *, ...)
-     __attribute__((format(printf, 2, 3)));
-extern void srcpos_warn(struct srcpos *pos, char const *, ...)
-     __attribute__((format(printf, 2, 3)));
+extern void srcpos_verror(struct srcpos *pos, const char *prefix,
+			  const char *fmt, va_list va)
+	__attribute__((format(printf, 3, 0)));
+extern void srcpos_error(struct srcpos *pos, const char *prefix,
+			 const char *fmt, ...)
+	__attribute__((format(printf, 3, 4)));
 
 extern void srcpos_set_line(char *f, int l);
 
diff -Nur linux-3.18.10/scripts/dtc/treesource.c linux-rpi/scripts/dtc/treesource.c
--- linux-3.18.10/scripts/dtc/treesource.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/treesource.c	2015-03-26 11:47:02.300245594 +0100
@@ -26,12 +26,12 @@
 extern YYLTYPE yylloc;
 
 struct boot_info *the_boot_info;
-int treesource_error;
+bool treesource_error;
 
 struct boot_info *dt_from_source(const char *fname)
 {
 	the_boot_info = NULL;
-	treesource_error = 0;
+	treesource_error = false;
 
 	srcfile_push(fname);
 	yyin = current_srcfile->f;
@@ -54,9 +54,9 @@
 		fputc('\t', f);
 }
 
-static int isstring(char c)
+static bool isstring(char c)
 {
-	return (isprint(c)
+	return (isprint((unsigned char)c)
 		|| (c == '\0')
 		|| strchr("\a\b\t\n\v\f\r", c));
 }
@@ -109,7 +109,7 @@
 			break;
 		case '\0':
 			fprintf(f, "\", ");
-			while (m && (m->offset < i)) {
+			while (m && (m->offset <= (i + 1))) {
 				if (m->type == LABEL) {
 					assert(m->offset == (i+1));
 					fprintf(f, "%s: ", m->ref);
@@ -119,7 +119,7 @@
 			fprintf(f, "\"");
 			break;
 		default:
-			if (isprint(c))
+			if (isprint((unsigned char)c))
 				fprintf(f, "%c", c);
 			else
 				fprintf(f, "\\x%02hhx", c);
@@ -178,7 +178,7 @@
 			m = m->next;
 		}
 
-		fprintf(f, "%02hhx", *bp++);
+		fprintf(f, "%02hhx", (unsigned char)(*bp++));
 		if ((const void *)bp >= propend)
 			break;
 		fprintf(f, " ");
diff -Nur linux-3.18.10/scripts/dtc/util.c linux-rpi/scripts/dtc/util.c
--- linux-3.18.10/scripts/dtc/util.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/util.c	2015-03-26 11:47:02.300245594 +0100
@@ -39,11 +39,11 @@
 char *xstrdup(const char *s)
 {
 	int len = strlen(s) + 1;
-	char *dup = xmalloc(len);
+	char *d = xmalloc(len);
 
-	memcpy(dup, s, len);
+	memcpy(d, s, len);
 
-	return dup;
+	return d;
 }
 
 char *join_path(const char *path, const char *name)
@@ -70,7 +70,7 @@
 	return str;
 }
 
-int util_is_printable_string(const void *data, int len)
+bool util_is_printable_string(const void *data, int len)
 {
 	const char *s = data;
 	const char *ss, *se;
@@ -87,7 +87,7 @@
 
 	while (s < se) {
 		ss = s;
-		while (s < se && *s && isprint(*s))
+		while (s < se && *s && isprint((unsigned char)*s))
 			s++;
 
 		/* not zero, or not done yet */
@@ -219,10 +219,6 @@
 		if (offset == bufsize) {
 			bufsize *= 2;
 			buf = xrealloc(buf, bufsize);
-			if (!buf) {
-				ret = ENOMEM;
-				break;
-			}
 		}
 
 		ret = read(fd, &buf[offset], bufsize - offset);
@@ -375,9 +371,9 @@
 		const uint32_t *cell = (const uint32_t *)data;
 
 		printf(" = <");
-		for (i = 0; i < len; i += 4)
+		for (i = 0, len /= 4; i < len; i++)
 			printf("0x%08x%s", fdt32_to_cpu(cell[i]),
-			       i < (len - 4) ? " " : "");
+			       i < (len - 1) ? " " : "");
 		printf(">");
 	} else {
 		printf(" = [");
diff -Nur linux-3.18.10/scripts/dtc/util.h linux-rpi/scripts/dtc/util.h
--- linux-3.18.10/scripts/dtc/util.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/util.h	2015-03-26 11:47:02.300245594 +0100
@@ -2,6 +2,7 @@
 #define _UTIL_H
 
 #include <stdarg.h>
+#include <stdbool.h>
 #include <getopt.h>
 
 /*
@@ -33,6 +34,7 @@
 	va_start(ap, str);
 	fprintf(stderr, "FATAL ERROR: ");
 	vfprintf(stderr, str, ap);
+	va_end(ap);
 	exit(1);
 }
 
@@ -68,7 +70,7 @@
  * @param len	The string length including terminator
  * @return 1 if a valid printable string, 0 if not
  */
-int util_is_printable_string(const void *data, int len);
+bool util_is_printable_string(const void *data, int len);
 
 /*
  * Parse an escaped character starting at index i in string s.  The resulting
diff -Nur linux-3.18.10/scripts/dtc/version_gen.h linux-rpi/scripts/dtc/version_gen.h
--- linux-3.18.10/scripts/dtc/version_gen.h	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/scripts/dtc/version_gen.h	2015-03-26 11:47:02.300245594 +0100
@@ -1 +1 @@
-#define DTC_VERSION "DTC 1.4.0-dirty"
+#define DTC_VERSION "DTC 1.4.1-g36c70742"
diff -Nur linux-3.18.10/sound/arm/bcm2835.c linux-rpi/sound/arm/bcm2835.c
--- linux-3.18.10/sound/arm/bcm2835.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/arm/bcm2835.c	2015-03-26 11:47:02.440245724 +0100
@@ -0,0 +1,420 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/platform_device.h>
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#include "bcm2835.h"
+
+/* module parameters (see "Module Parameters") */
+/* SNDRV_CARDS: maximum number of cards supported by this module */
+static int index[MAX_SUBSTREAMS] = {[0 ... (MAX_SUBSTREAMS - 1)] = -1 };
+static char *id[MAX_SUBSTREAMS] = {[0 ... (MAX_SUBSTREAMS - 1)] = NULL };
+static int enable[MAX_SUBSTREAMS] = {[0 ... (MAX_SUBSTREAMS - 1)] = 1 };
+
+/* HACKY global pointers needed for successive probes to work : ssp
+ * But compared against the changes we will have to do in VC audio_ipc code
+ * to export 8 audio_ipc devices as a single IPC device and then monitor all
+ * four devices in a thread, this gets things done quickly and should be easier
+ * to debug if we run into issues
+ */
+
+static struct snd_card *g_card = NULL;
+static bcm2835_chip_t *g_chip = NULL;
+
+static int snd_bcm2835_free(bcm2835_chip_t * chip)
+{
+	kfree(chip);
+	return 0;
+}
+
+/* component-destructor
+ * (see "Management of Cards and Components")
+ */
+static int snd_bcm2835_dev_free(struct snd_device *device)
+{
+	return snd_bcm2835_free(device->device_data);
+}
+
+/* chip-specific constructor
+ * (see "Management of Cards and Components")
+ */
+static int snd_bcm2835_create(struct snd_card *card,
+					struct platform_device *pdev,
+					bcm2835_chip_t ** rchip)
+{
+	bcm2835_chip_t *chip;
+	int err;
+	static struct snd_device_ops ops = {
+		.dev_free = snd_bcm2835_dev_free,
+	};
+
+	*rchip = NULL;
+
+	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+	if (chip == NULL)
+		return -ENOMEM;
+
+	chip->card = card;
+
+	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+	if (err < 0) {
+		snd_bcm2835_free(chip);
+		return err;
+	}
+
+	*rchip = chip;
+	return 0;
+}
+
+static int snd_bcm2835_alsa_probe(struct platform_device *pdev)
+{
+	static int dev;
+	bcm2835_chip_t *chip;
+	struct snd_card *card;
+	int err;
+
+	if (dev >= MAX_SUBSTREAMS)
+		return -ENODEV;
+
+	if (!enable[dev]) {
+		dev++;
+		return -ENOENT;
+	}
+
+	if (dev > 0)
+		goto add_register_map;
+
+	err = snd_card_new(NULL, index[dev], id[dev], THIS_MODULE, 0, &g_card);
+	if (err < 0)
+		goto out;
+
+	snd_card_set_dev(g_card, &pdev->dev);
+	strcpy(g_card->driver, "bcm2835");
+	strcpy(g_card->shortname, "bcm2835 ALSA");
+	sprintf(g_card->longname, "%s", g_card->shortname);
+
+	err = snd_bcm2835_create(g_card, pdev, &chip);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Failed to create bcm2835 chip\n");
+		goto out_bcm2835_create;
+	}
+
+	g_chip = chip;
+	err = snd_bcm2835_new_pcm(chip);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Failed to create new BCM2835 pcm device\n");
+		goto out_bcm2835_new_pcm;
+	}
+
+	err = snd_bcm2835_new_spdif_pcm(chip);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Failed to create new BCM2835 spdif pcm device\n");
+		goto out_bcm2835_new_spdif;
+	}
+
+	err = snd_bcm2835_new_ctl(chip);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Failed to create new BCM2835 ctl\n");
+		goto out_bcm2835_new_ctl;
+	}
+
+add_register_map:
+	card = g_card;
+	chip = g_chip;
+
+	BUG_ON(!(card && chip));
+
+	chip->avail_substreams |= (1 << dev);
+	chip->pdev[dev] = pdev;
+
+	if (dev == 0) {
+		err = snd_card_register(card);
+		if (err < 0) {
+			dev_err(&pdev->dev,
+				"Failed to register bcm2835 ALSA card \n");
+			goto out_card_register;
+		}
+		platform_set_drvdata(pdev, card);
+		audio_info("bcm2835 ALSA card created!\n");
+	} else {
+		audio_info("bcm2835 ALSA chip created!\n");
+		platform_set_drvdata(pdev, (void *)dev);
+	}
+
+	dev++;
+
+	return 0;
+
+out_card_register:
+out_bcm2835_new_ctl:
+out_bcm2835_new_spdif:
+out_bcm2835_new_pcm:
+out_bcm2835_create:
+	BUG_ON(!g_card);
+	if (snd_card_free(g_card))
+		dev_err(&pdev->dev, "Failed to free Registered alsa card\n");
+	g_card = NULL;
+out:
+	dev = SNDRV_CARDS;	/* stop more avail_substreams from being probed */
+	dev_err(&pdev->dev, "BCM2835 ALSA Probe failed !!\n");
+	return err;
+}
+
+static int snd_bcm2835_alsa_remove(struct platform_device *pdev)
+{
+	uint32_t idx;
+	void *drv_data;
+
+	drv_data = platform_get_drvdata(pdev);
+
+	if (drv_data == (void *)g_card) {
+		/* This is the card device */
+		snd_card_free((struct snd_card *)drv_data);
+		g_card = NULL;
+		g_chip = NULL;
+	} else {
+		idx = (uint32_t) drv_data;
+		if (g_card != NULL) {
+			BUG_ON(!g_chip);
+			/* We pass chip device numbers in audio ipc devices
+			 * other than the one we registered our card with
+			 */
+			idx = (uint32_t) drv_data;
+			BUG_ON(!idx || idx > MAX_SUBSTREAMS);
+			g_chip->avail_substreams &= ~(1 << idx);
+			/* There should be atleast one substream registered
+			 * after we are done here, as it wil be removed when
+			 * the *remove* is called for the card device
+			 */
+			BUG_ON(!g_chip->avail_substreams);
+		}
+	}
+
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int snd_bcm2835_alsa_suspend(struct platform_device *pdev,
+				    pm_message_t state)
+{
+	return 0;
+}
+
+static int snd_bcm2835_alsa_resume(struct platform_device *pdev)
+{
+	return 0;
+}
+
+#endif
+
+static struct platform_driver bcm2835_alsa0_driver = {
+	.probe = snd_bcm2835_alsa_probe,
+	.remove = snd_bcm2835_alsa_remove,
+#ifdef CONFIG_PM
+	.suspend = snd_bcm2835_alsa_suspend,
+	.resume = snd_bcm2835_alsa_resume,
+#endif
+	.driver = {
+		   .name = "bcm2835_AUD0",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_driver bcm2835_alsa1_driver = {
+	.probe = snd_bcm2835_alsa_probe,
+	.remove = snd_bcm2835_alsa_remove,
+#ifdef CONFIG_PM
+	.suspend = snd_bcm2835_alsa_suspend,
+	.resume = snd_bcm2835_alsa_resume,
+#endif
+	.driver = {
+		   .name = "bcm2835_AUD1",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_driver bcm2835_alsa2_driver = {
+	.probe = snd_bcm2835_alsa_probe,
+	.remove = snd_bcm2835_alsa_remove,
+#ifdef CONFIG_PM
+	.suspend = snd_bcm2835_alsa_suspend,
+	.resume = snd_bcm2835_alsa_resume,
+#endif
+	.driver = {
+		   .name = "bcm2835_AUD2",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_driver bcm2835_alsa3_driver = {
+	.probe = snd_bcm2835_alsa_probe,
+	.remove = snd_bcm2835_alsa_remove,
+#ifdef CONFIG_PM
+	.suspend = snd_bcm2835_alsa_suspend,
+	.resume = snd_bcm2835_alsa_resume,
+#endif
+	.driver = {
+		   .name = "bcm2835_AUD3",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_driver bcm2835_alsa4_driver = {
+	.probe = snd_bcm2835_alsa_probe,
+	.remove = snd_bcm2835_alsa_remove,
+#ifdef CONFIG_PM
+	.suspend = snd_bcm2835_alsa_suspend,
+	.resume = snd_bcm2835_alsa_resume,
+#endif
+	.driver = {
+		   .name = "bcm2835_AUD4",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_driver bcm2835_alsa5_driver = {
+	.probe = snd_bcm2835_alsa_probe,
+	.remove = snd_bcm2835_alsa_remove,
+#ifdef CONFIG_PM
+	.suspend = snd_bcm2835_alsa_suspend,
+	.resume = snd_bcm2835_alsa_resume,
+#endif
+	.driver = {
+		   .name = "bcm2835_AUD5",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_driver bcm2835_alsa6_driver = {
+	.probe = snd_bcm2835_alsa_probe,
+	.remove = snd_bcm2835_alsa_remove,
+#ifdef CONFIG_PM
+	.suspend = snd_bcm2835_alsa_suspend,
+	.resume = snd_bcm2835_alsa_resume,
+#endif
+	.driver = {
+		   .name = "bcm2835_AUD6",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_driver bcm2835_alsa7_driver = {
+	.probe = snd_bcm2835_alsa_probe,
+	.remove = snd_bcm2835_alsa_remove,
+#ifdef CONFIG_PM
+	.suspend = snd_bcm2835_alsa_suspend,
+	.resume = snd_bcm2835_alsa_resume,
+#endif
+	.driver = {
+		   .name = "bcm2835_AUD7",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static int bcm2835_alsa_device_init(void)
+{
+	int err;
+	err = platform_driver_register(&bcm2835_alsa0_driver);
+	if (err) {
+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
+		goto out;
+	}
+
+	err = platform_driver_register(&bcm2835_alsa1_driver);
+	if (err) {
+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
+		goto unregister_0;
+	}
+
+	err = platform_driver_register(&bcm2835_alsa2_driver);
+	if (err) {
+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
+		goto unregister_1;
+	}
+
+	err = platform_driver_register(&bcm2835_alsa3_driver);
+	if (err) {
+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
+		goto unregister_2;
+	}
+
+	err = platform_driver_register(&bcm2835_alsa4_driver);
+	if (err) {
+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
+		goto unregister_3;
+	}
+
+	err = platform_driver_register(&bcm2835_alsa5_driver);
+	if (err) {
+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
+		goto unregister_4;
+	}
+
+	err = platform_driver_register(&bcm2835_alsa6_driver);
+	if (err) {
+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
+		goto unregister_5;
+	}
+
+	err = platform_driver_register(&bcm2835_alsa7_driver);
+	if (err) {
+		pr_err("Error registering bcm2835_alsa0_driver %d .\n", err);
+		goto unregister_6;
+	}
+
+	return 0;
+
+unregister_6:
+	platform_driver_unregister(&bcm2835_alsa6_driver);
+unregister_5:
+	platform_driver_unregister(&bcm2835_alsa5_driver);
+unregister_4:
+	platform_driver_unregister(&bcm2835_alsa4_driver);
+unregister_3:
+	platform_driver_unregister(&bcm2835_alsa3_driver);
+unregister_2:
+	platform_driver_unregister(&bcm2835_alsa2_driver);
+unregister_1:
+	platform_driver_unregister(&bcm2835_alsa1_driver);
+unregister_0:
+	platform_driver_unregister(&bcm2835_alsa0_driver);
+out:
+	return err;
+}
+
+static void bcm2835_alsa_device_exit(void)
+{
+	platform_driver_unregister(&bcm2835_alsa0_driver);
+	platform_driver_unregister(&bcm2835_alsa1_driver);
+	platform_driver_unregister(&bcm2835_alsa2_driver);
+	platform_driver_unregister(&bcm2835_alsa3_driver);
+	platform_driver_unregister(&bcm2835_alsa4_driver);
+	platform_driver_unregister(&bcm2835_alsa5_driver);
+	platform_driver_unregister(&bcm2835_alsa6_driver);
+	platform_driver_unregister(&bcm2835_alsa7_driver);
+}
+
+late_initcall(bcm2835_alsa_device_init);
+module_exit(bcm2835_alsa_device_exit);
+
+MODULE_AUTHOR("Dom Cobley");
+MODULE_DESCRIPTION("Alsa driver for BCM2835 chip");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bcm2835_alsa");
diff -Nur linux-3.18.10/sound/arm/bcm2835-ctl.c linux-rpi/sound/arm/bcm2835-ctl.c
--- linux-3.18.10/sound/arm/bcm2835-ctl.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/arm/bcm2835-ctl.c	2015-03-26 11:47:02.428245711 +0100
@@ -0,0 +1,323 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/jiffies.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/delay.h>
+#include <linux/moduleparam.h>
+#include <linux/sched.h>
+
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/rawmidi.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+#include <sound/asoundef.h>
+
+#include "bcm2835.h"
+
+/* volume maximum and minimum in terms of 0.01dB */
+#define CTRL_VOL_MAX 400
+#define CTRL_VOL_MIN -10239 /* originally -10240 */
+
+
+static int snd_bcm2835_ctl_info(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_info *uinfo)
+{
+	audio_info(" ... IN\n");
+	if (kcontrol->private_value == PCM_PLAYBACK_VOLUME) {
+		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+		uinfo->count = 1;
+		uinfo->value.integer.min = CTRL_VOL_MIN;
+		uinfo->value.integer.max = CTRL_VOL_MAX;      /* 2303 */
+	} else if (kcontrol->private_value == PCM_PLAYBACK_MUTE) {
+		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+		uinfo->count = 1;
+		uinfo->value.integer.min = 0;
+		uinfo->value.integer.max = 1;
+	} else if (kcontrol->private_value == PCM_PLAYBACK_DEVICE) {
+		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+		uinfo->count = 1;
+		uinfo->value.integer.min = 0;
+		uinfo->value.integer.max = AUDIO_DEST_MAX-1;
+	}
+	audio_info(" ... OUT\n");
+	return 0;
+}
+
+/* toggles mute on or off depending on the value of nmute, and returns
+ * 1 if the mute value was changed, otherwise 0
+ */
+static int toggle_mute(struct bcm2835_chip *chip, int nmute)
+{
+	/* if settings are ok, just return 0 */
+	if(chip->mute == nmute)
+		return 0;
+
+	/* if the sound is muted then we need to unmute */
+	if(chip->mute == CTRL_VOL_MUTE)
+	{
+		chip->volume = chip->old_volume; /* copy the old volume back */
+		audio_info("Unmuting, old_volume = %d, volume = %d ...\n", chip->old_volume, chip->volume);
+	}
+	else /* otherwise we mute */
+	{
+		chip->old_volume = chip->volume;
+		chip->volume = 26214; /* set volume to minimum level AKA mute */
+		audio_info("Muting, old_volume = %d, volume = %d ...\n", chip->old_volume, chip->volume);
+	}
+
+	chip->mute = nmute;
+	return 1;
+}
+
+static int snd_bcm2835_ctl_get(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
+
+	BUG_ON(!chip && !(chip->avail_substreams & AVAIL_SUBSTREAMS_MASK));
+
+	if (kcontrol->private_value == PCM_PLAYBACK_VOLUME)
+		ucontrol->value.integer.value[0] = chip2alsa(chip->volume);
+	else if (kcontrol->private_value == PCM_PLAYBACK_MUTE)
+		ucontrol->value.integer.value[0] = chip->mute;
+	else if (kcontrol->private_value == PCM_PLAYBACK_DEVICE)
+		ucontrol->value.integer.value[0] = chip->dest;
+
+	return 0;
+}
+
+static int snd_bcm2835_ctl_put(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
+	int changed = 0;
+
+	if (kcontrol->private_value == PCM_PLAYBACK_VOLUME) {
+		audio_info("Volume change attempted.. volume = %d new_volume = %d\n", chip->volume, (int)ucontrol->value.integer.value[0]);
+		if (chip->mute == CTRL_VOL_MUTE) {
+			/* changed = toggle_mute(chip, CTRL_VOL_UNMUTE); */
+			return 1; /* should return 0 to signify no change but the mixer takes this as the opposite sign (no idea why) */
+		}
+		if (changed
+		    || (ucontrol->value.integer.value[0] != chip2alsa(chip->volume))) {
+
+			chip->volume = alsa2chip(ucontrol->value.integer.value[0]);
+			changed = 1;
+		}
+
+	} else if (kcontrol->private_value == PCM_PLAYBACK_MUTE) {
+		/* Now implemented */
+		audio_info(" Mute attempted\n");
+		changed = toggle_mute(chip, ucontrol->value.integer.value[0]);
+
+	} else if (kcontrol->private_value == PCM_PLAYBACK_DEVICE) {
+		if (ucontrol->value.integer.value[0] != chip->dest) {
+			chip->dest = ucontrol->value.integer.value[0];
+			changed = 1;
+		}
+	}
+
+	if (changed) {
+		if (bcm2835_audio_set_ctls(chip))
+			printk(KERN_ERR "Failed to set ALSA controls..\n");
+	}
+
+	return changed;
+}
+
+static DECLARE_TLV_DB_SCALE(snd_bcm2835_db_scale, CTRL_VOL_MIN, 1, 1);
+
+static struct snd_kcontrol_new snd_bcm2835_ctl[] = {
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	 .name = "PCM Playback Volume",
+	 .index = 0,
+	 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
+	 .private_value = PCM_PLAYBACK_VOLUME,
+	 .info = snd_bcm2835_ctl_info,
+	 .get = snd_bcm2835_ctl_get,
+	 .put = snd_bcm2835_ctl_put,
+	 .count = 1,
+	 .tlv = {.p = snd_bcm2835_db_scale}
+	},
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	 .name = "PCM Playback Switch",
+	 .index = 0,
+	 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+	 .private_value = PCM_PLAYBACK_MUTE,
+	 .info = snd_bcm2835_ctl_info,
+	 .get = snd_bcm2835_ctl_get,
+	 .put = snd_bcm2835_ctl_put,
+	 .count = 1,
+	 },
+	{
+	 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	 .name = "PCM Playback Route",
+	 .index = 0,
+	 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+	 .private_value = PCM_PLAYBACK_DEVICE,
+	 .info = snd_bcm2835_ctl_info,
+	 .get = snd_bcm2835_ctl_get,
+	 .put = snd_bcm2835_ctl_put,
+	 .count = 1,
+	},
+};
+
+static int snd_bcm2835_spdif_default_info(struct snd_kcontrol *kcontrol,
+					  struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+	uinfo->count = 1;
+	return 0;
+}
+
+static int snd_bcm2835_spdif_default_get(struct snd_kcontrol *kcontrol,
+					 struct snd_ctl_elem_value *ucontrol)
+{
+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
+	int i;
+
+	for (i = 0; i < 4; i++)
+		ucontrol->value.iec958.status[i] =
+			(chip->spdif_status >> (i * 8)) && 0xff;
+
+	return 0;
+}
+
+static int snd_bcm2835_spdif_default_put(struct snd_kcontrol *kcontrol,
+					 struct snd_ctl_elem_value *ucontrol)
+{
+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
+	unsigned int val = 0;
+	int i, change;
+
+	for (i = 0; i < 4; i++)
+		val |= (unsigned int)ucontrol->value.iec958.status[i] << (i * 8);
+
+	change = val != chip->spdif_status;
+	chip->spdif_status = val;
+
+	return change;
+}
+
+static int snd_bcm2835_spdif_mask_info(struct snd_kcontrol *kcontrol,
+				       struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+	uinfo->count = 1;
+	return 0;
+}
+
+static int snd_bcm2835_spdif_mask_get(struct snd_kcontrol *kcontrol,
+				      struct snd_ctl_elem_value *ucontrol)
+{
+	/* bcm2835 supports only consumer mode and sets all other format flags
+	 * automatically. So the only thing left is signalling non-audio
+	 * content */
+	ucontrol->value.iec958.status[0] = IEC958_AES0_NONAUDIO;
+	return 0;
+}
+
+static int snd_bcm2835_spdif_stream_info(struct snd_kcontrol *kcontrol,
+					 struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+	uinfo->count = 1;
+	return 0;
+}
+
+static int snd_bcm2835_spdif_stream_get(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
+	int i;
+
+	for (i = 0; i < 4; i++)
+		ucontrol->value.iec958.status[i] =
+			(chip->spdif_status >> (i * 8)) & 0xff;
+	return 0;
+}
+
+static int snd_bcm2835_spdif_stream_put(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
+	unsigned int val = 0;
+	int i, change;
+
+	for (i = 0; i < 4; i++)
+		val |= (unsigned int)ucontrol->value.iec958.status[i] << (i * 8);
+	change = val != chip->spdif_status;
+	chip->spdif_status = val;
+
+	return change;
+}
+
+static struct snd_kcontrol_new snd_bcm2835_spdif[] = {
+	{
+		.iface = SNDRV_CTL_ELEM_IFACE_PCM,
+		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
+		.info = snd_bcm2835_spdif_default_info,
+		.get = snd_bcm2835_spdif_default_get,
+		.put = snd_bcm2835_spdif_default_put
+	},
+	{
+		.access = SNDRV_CTL_ELEM_ACCESS_READ,
+		.iface = SNDRV_CTL_ELEM_IFACE_PCM,
+		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK),
+		.info = snd_bcm2835_spdif_mask_info,
+		.get = snd_bcm2835_spdif_mask_get,
+	},
+	{
+		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
+			SNDRV_CTL_ELEM_ACCESS_INACTIVE,
+		.iface = SNDRV_CTL_ELEM_IFACE_PCM,
+		.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PCM_STREAM),
+		.info = snd_bcm2835_spdif_stream_info,
+		.get = snd_bcm2835_spdif_stream_get,
+		.put = snd_bcm2835_spdif_stream_put,
+	},
+};
+
+int snd_bcm2835_new_ctl(bcm2835_chip_t * chip)
+{
+	int err;
+	unsigned int idx;
+
+	strcpy(chip->card->mixername, "Broadcom Mixer");
+	for (idx = 0; idx < ARRAY_SIZE(snd_bcm2835_ctl); idx++) {
+		err =
+		    snd_ctl_add(chip->card,
+				snd_ctl_new1(&snd_bcm2835_ctl[idx], chip));
+		if (err < 0)
+			return err;
+	}
+	for (idx = 0; idx < ARRAY_SIZE(snd_bcm2835_spdif); idx++) {
+		err = snd_ctl_add(chip->card,
+				snd_ctl_new1(&snd_bcm2835_spdif[idx], chip));
+		if (err < 0)
+			return err;
+	}
+	return 0;
+}
diff -Nur linux-3.18.10/sound/arm/bcm2835.h linux-rpi/sound/arm/bcm2835.h
--- linux-3.18.10/sound/arm/bcm2835.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/arm/bcm2835.h	2015-03-26 11:47:02.440245724 +0100
@@ -0,0 +1,167 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#ifndef __SOUND_ARM_BCM2835_H
+#define __SOUND_ARM_BCM2835_H
+
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/wait.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/pcm-indirect.h>
+#include <linux/workqueue.h>
+
+/*
+#define AUDIO_DEBUG_ENABLE
+#define AUDIO_VERBOSE_DEBUG_ENABLE
+*/
+
+/* Debug macros */
+
+#ifdef AUDIO_DEBUG_ENABLE
+#ifdef AUDIO_VERBOSE_DEBUG_ENABLE
+
+#define audio_debug(fmt, arg...)	\
+	printk(KERN_INFO"%s:%d " fmt, __func__, __LINE__, ##arg)
+
+#define audio_info(fmt, arg...)	\
+	printk(KERN_INFO"%s:%d " fmt, __func__, __LINE__, ##arg)
+
+#else
+
+#define audio_debug(fmt, arg...)
+
+#define audio_info(fmt, arg...)
+
+#endif /* AUDIO_VERBOSE_DEBUG_ENABLE */
+
+#else
+
+#define audio_debug(fmt, arg...)
+
+#define audio_info(fmt, arg...)
+
+#endif /* AUDIO_DEBUG_ENABLE */
+
+#define audio_error(fmt, arg...)	\
+	printk(KERN_ERR"%s:%d " fmt, __func__, __LINE__, ##arg)
+
+#define audio_warning(fmt, arg...)	\
+	printk(KERN_WARNING"%s:%d " fmt, __func__, __LINE__, ##arg)
+
+#define audio_alert(fmt, arg...)	\
+	printk(KERN_ALERT"%s:%d " fmt, __func__, __LINE__, ##arg)
+
+#define MAX_SUBSTREAMS			(8)
+#define AVAIL_SUBSTREAMS_MASK		(0xff)
+enum {
+	CTRL_VOL_MUTE,
+	CTRL_VOL_UNMUTE
+};
+
+/* macros for alsa2chip and chip2alsa, instead of functions */
+
+#define alsa2chip(vol) (uint)(-((vol << 8) / 100))	/* convert alsa to chip volume (defined as macro rather than function call) */
+#define chip2alsa(vol) -((vol * 100) >> 8)			/* convert chip to alsa volume */
+
+/* Some constants for values .. */
+typedef enum {
+	AUDIO_DEST_AUTO = 0,
+	AUDIO_DEST_HEADPHONES = 1,
+	AUDIO_DEST_HDMI = 2,
+	AUDIO_DEST_MAX,
+} SND_BCM2835_ROUTE_T;
+
+typedef enum {
+	PCM_PLAYBACK_VOLUME,
+	PCM_PLAYBACK_MUTE,
+	PCM_PLAYBACK_DEVICE,
+} SND_BCM2835_CTRL_T;
+
+/* definition of the chip-specific record */
+typedef struct bcm2835_chip {
+	struct snd_card *card;
+	struct snd_pcm *pcm;
+	struct snd_pcm *pcm_spdif;
+	/* Bitmat for valid reg_base and irq numbers */
+	uint32_t avail_substreams;
+	struct platform_device *pdev[MAX_SUBSTREAMS];
+	struct bcm2835_alsa_stream *alsa_stream[MAX_SUBSTREAMS];
+
+	int volume;
+	int old_volume; /* stores the volume value whist muted */
+	int dest;
+	int mute;
+
+	unsigned int opened;
+	unsigned int spdif_status;
+	struct mutex audio_mutex;
+} bcm2835_chip_t;
+
+typedef struct bcm2835_alsa_stream {
+	bcm2835_chip_t *chip;
+	struct snd_pcm_substream *substream;
+	struct snd_pcm_indirect pcm_indirect;
+
+	struct semaphore buffers_update_sem;
+	struct semaphore control_sem;
+	spinlock_t lock;
+	volatile uint32_t control;
+	volatile uint32_t status;
+
+	int open;
+	int running;
+	int draining;
+
+	int channels;
+	int params_rate;
+	int pcm_format_width;
+
+	unsigned int pos;
+	unsigned int buffer_size;
+	unsigned int period_size;
+
+	uint32_t enable_fifo_irq;
+	irq_handler_t fifo_irq_handler;
+
+	atomic_t retrieved;
+	struct opaque_AUDIO_INSTANCE_T *instance;
+	struct workqueue_struct *my_wq;
+	int idx;
+} bcm2835_alsa_stream_t;
+
+int snd_bcm2835_new_ctl(bcm2835_chip_t * chip);
+int snd_bcm2835_new_pcm(bcm2835_chip_t * chip);
+int snd_bcm2835_new_spdif_pcm(bcm2835_chip_t * chip);
+
+int bcm2835_audio_open(bcm2835_alsa_stream_t * alsa_stream);
+int bcm2835_audio_close(bcm2835_alsa_stream_t * alsa_stream);
+int bcm2835_audio_set_params(bcm2835_alsa_stream_t * alsa_stream,
+			     uint32_t channels, uint32_t samplerate,
+			     uint32_t bps);
+int bcm2835_audio_setup(bcm2835_alsa_stream_t * alsa_stream);
+int bcm2835_audio_start(bcm2835_alsa_stream_t * alsa_stream);
+int bcm2835_audio_stop(bcm2835_alsa_stream_t * alsa_stream);
+int bcm2835_audio_set_ctls(bcm2835_chip_t * chip);
+int bcm2835_audio_write(bcm2835_alsa_stream_t * alsa_stream, uint32_t count,
+			void *src);
+uint32_t bcm2835_audio_retrieve_buffers(bcm2835_alsa_stream_t * alsa_stream);
+void bcm2835_audio_flush_buffers(bcm2835_alsa_stream_t * alsa_stream);
+void bcm2835_audio_flush_playback_buffers(bcm2835_alsa_stream_t * alsa_stream);
+
+#endif /* __SOUND_ARM_BCM2835_H */
diff -Nur linux-3.18.10/sound/arm/bcm2835-pcm.c linux-rpi/sound/arm/bcm2835-pcm.c
--- linux-3.18.10/sound/arm/bcm2835-pcm.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/arm/bcm2835-pcm.c	2015-03-26 11:47:02.440245724 +0100
@@ -0,0 +1,552 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+
+#include <sound/asoundef.h>
+
+#include "bcm2835.h"
+
+/* hardware definition */
+static struct snd_pcm_hardware snd_bcm2835_playback_hw = {
+	.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID),
+	.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
+	.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+	.rate_min = 8000,
+	.rate_max = 48000,
+	.channels_min = 1,
+	.channels_max = 2,
+	.buffer_bytes_max = 128 * 1024,
+	.period_bytes_min =   1 * 1024,
+	.period_bytes_max = 128 * 1024,
+	.periods_min = 1,
+	.periods_max = 128,
+};
+
+static struct snd_pcm_hardware snd_bcm2835_playback_spdif_hw = {
+	.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID),
+	.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_44100 |
+		SNDRV_PCM_RATE_48000,
+	.rate_min = 44100,
+	.rate_max = 48000,
+	.channels_min = 2,
+	.channels_max = 2,
+	.buffer_bytes_max = 128 * 1024,
+	.period_bytes_min =   1 * 1024,
+	.period_bytes_max = 128 * 1024,
+	.periods_min = 1,
+	.periods_max = 128,
+};
+
+static void snd_bcm2835_playback_free(struct snd_pcm_runtime *runtime)
+{
+	audio_info("Freeing up alsa stream here ..\n");
+	if (runtime->private_data)
+		kfree(runtime->private_data);
+	runtime->private_data = NULL;
+}
+
+static irqreturn_t bcm2835_playback_fifo_irq(int irq, void *dev_id)
+{
+	bcm2835_alsa_stream_t *alsa_stream = (bcm2835_alsa_stream_t *) dev_id;
+	uint32_t consumed = 0;
+	int new_period = 0;
+
+	audio_info(" .. IN\n");
+
+	audio_info("alsa_stream=%p substream=%p\n", alsa_stream,
+		   alsa_stream ? alsa_stream->substream : 0);
+
+	if (alsa_stream->open)
+		consumed = bcm2835_audio_retrieve_buffers(alsa_stream);
+
+	/* We get called only if playback was triggered, So, the number of buffers we retrieve in
+	 * each iteration are the buffers that have been played out already
+	 */
+
+	if (alsa_stream->period_size) {
+		if ((alsa_stream->pos / alsa_stream->period_size) !=
+		    ((alsa_stream->pos + consumed) / alsa_stream->period_size))
+			new_period = 1;
+	}
+	audio_debug("updating pos cur: %d + %d max:%d period_bytes:%d, hw_ptr: %d new_period:%d\n",
+		      alsa_stream->pos,
+		      consumed,
+		      alsa_stream->buffer_size,
+			  (int)(alsa_stream->period_size*alsa_stream->substream->runtime->periods),
+			  frames_to_bytes(alsa_stream->substream->runtime, alsa_stream->substream->runtime->status->hw_ptr),
+			  new_period);
+	if (alsa_stream->buffer_size) {
+		alsa_stream->pos += consumed &~ (1<<30);
+		alsa_stream->pos %= alsa_stream->buffer_size;
+	}
+
+	if (alsa_stream->substream) {
+		if (new_period)
+			snd_pcm_period_elapsed(alsa_stream->substream);
+	} else {
+		audio_warning(" unexpected NULL substream\n");
+	}
+	audio_info(" .. OUT\n");
+
+	return IRQ_HANDLED;
+}
+
+/* open callback */
+static int snd_bcm2835_playback_open_generic(
+		struct snd_pcm_substream *substream, int spdif)
+{
+	bcm2835_chip_t *chip = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	bcm2835_alsa_stream_t *alsa_stream;
+	int idx;
+	int err;
+
+	audio_info(" .. IN (%d)\n", substream->number);
+
+	if(mutex_lock_interruptible(&chip->audio_mutex))
+	{
+		audio_error("Interrupted whilst waiting for lock\n");
+		return -EINTR;
+	}
+	audio_info("Alsa open (%d)\n", substream->number);
+	idx = substream->number;
+
+	if (spdif && chip->opened != 0)
+		return -EBUSY;
+	else if (!spdif && (chip->opened & (1 << idx)))
+		return -EBUSY;
+
+	if (idx > MAX_SUBSTREAMS) {
+		audio_error
+		    ("substream(%d) device doesn't exist max(%d) substreams allowed\n",
+		     idx, MAX_SUBSTREAMS);
+		err = -ENODEV;
+		goto out;
+	}
+
+	/* Check if we are ready */
+	if (!(chip->avail_substreams & (1 << idx))) {
+		/* We are not ready yet */
+		audio_error("substream(%d) device is not ready yet\n", idx);
+		err = -EAGAIN;
+		goto out;
+	}
+
+	alsa_stream = kzalloc(sizeof(bcm2835_alsa_stream_t), GFP_KERNEL);
+	if (alsa_stream == NULL) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	/* Initialise alsa_stream */
+	alsa_stream->chip = chip;
+	alsa_stream->substream = substream;
+	alsa_stream->idx = idx;
+
+	sema_init(&alsa_stream->buffers_update_sem, 0);
+	sema_init(&alsa_stream->control_sem, 0);
+	spin_lock_init(&alsa_stream->lock);
+
+	/* Enabled in start trigger, called on each "fifo irq" after that */
+	alsa_stream->enable_fifo_irq = 0;
+	alsa_stream->fifo_irq_handler = bcm2835_playback_fifo_irq;
+
+	err = bcm2835_audio_open(alsa_stream);
+	if (err != 0) {
+		kfree(alsa_stream);
+		return err;
+	}
+	runtime->private_data = alsa_stream;
+	runtime->private_free = snd_bcm2835_playback_free;
+	if (spdif) {
+		runtime->hw = snd_bcm2835_playback_spdif_hw;
+	} else {
+		/* clear spdif status, as we are not in spdif mode */
+		chip->spdif_status = 0;
+		runtime->hw = snd_bcm2835_playback_hw;
+	}
+	/* minimum 16 bytes alignment (for vchiq bulk transfers) */
+	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
+				   16);
+
+	chip->alsa_stream[idx] = alsa_stream;
+
+	chip->opened |= (1 << idx);
+	alsa_stream->open = 1;
+	alsa_stream->draining = 1;
+
+out:
+	mutex_unlock(&chip->audio_mutex);
+
+	audio_info(" .. OUT =%d\n", err);
+
+	return err;
+}
+
+static int snd_bcm2835_playback_open(struct snd_pcm_substream *substream)
+{
+	return snd_bcm2835_playback_open_generic(substream, 0);
+}
+
+static int snd_bcm2835_playback_spdif_open(struct snd_pcm_substream *substream)
+{
+	return snd_bcm2835_playback_open_generic(substream, 1);
+}
+
+/* close callback */
+static int snd_bcm2835_playback_close(struct snd_pcm_substream *substream)
+{
+	/* the hardware-specific codes will be here */
+
+	bcm2835_chip_t *chip;
+	struct snd_pcm_runtime *runtime;
+	bcm2835_alsa_stream_t *alsa_stream;
+
+	audio_info(" .. IN\n");
+
+	chip = snd_pcm_substream_chip(substream);
+	if(mutex_lock_interruptible(&chip->audio_mutex))
+	{
+		audio_error("Interrupted whilst waiting for lock\n");
+		return -EINTR;
+	}
+	runtime = substream->runtime;
+	alsa_stream = runtime->private_data;
+
+	audio_info("Alsa close\n");
+
+	/*
+	 * Call stop if it's still running. This happens when app
+	 * is force killed and we don't get a stop trigger.
+	 */
+	if (alsa_stream->running) {
+		int err;
+		err = bcm2835_audio_stop(alsa_stream);
+		alsa_stream->running = 0;
+		if (err != 0)
+			audio_error(" Failed to STOP alsa device\n");
+	}
+
+	alsa_stream->period_size = 0;
+	alsa_stream->buffer_size = 0;
+
+	if (alsa_stream->open) {
+		alsa_stream->open = 0;
+		bcm2835_audio_close(alsa_stream);
+	}
+	if (alsa_stream->chip)
+		alsa_stream->chip->alsa_stream[alsa_stream->idx] = NULL;
+	/*
+	 * Do not free up alsa_stream here, it will be freed up by
+	 * runtime->private_free callback we registered in *_open above
+	 */
+
+	chip->opened &= ~(1 << substream->number);
+
+	mutex_unlock(&chip->audio_mutex);
+	audio_info(" .. OUT\n");
+
+	return 0;
+}
+
+/* hw_params callback */
+static int snd_bcm2835_pcm_hw_params(struct snd_pcm_substream *substream,
+				     struct snd_pcm_hw_params *params)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
+	int err;
+
+	audio_info(" .. IN\n");
+
+	err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
+	if (err < 0) {
+		audio_error
+		    (" pcm_lib_malloc failed to allocated pages for buffers\n");
+		return err;
+	}
+
+	alsa_stream->channels = params_channels(params);
+	alsa_stream->params_rate = params_rate(params);
+	alsa_stream->pcm_format_width = snd_pcm_format_width(params_format (params));
+	audio_info(" .. OUT\n");
+
+	return err;
+}
+
+/* hw_free callback */
+static int snd_bcm2835_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+	audio_info(" .. IN\n");
+	return snd_pcm_lib_free_pages(substream);
+}
+
+/* prepare callback */
+static int snd_bcm2835_pcm_prepare(struct snd_pcm_substream *substream)
+{
+	bcm2835_chip_t *chip = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
+	int channels;
+	int err;
+
+	audio_info(" .. IN\n");
+
+	/* notify the vchiq that it should enter spdif passthrough mode by
+	 * setting channels=0 (see
+	 * https://github.com/raspberrypi/linux/issues/528) */
+	if (chip->spdif_status & IEC958_AES0_NONAUDIO)
+		channels = 0;
+	else
+		channels = alsa_stream->channels;
+
+	err = bcm2835_audio_set_params(alsa_stream, channels,
+				       alsa_stream->params_rate,
+				       alsa_stream->pcm_format_width);
+	if (err < 0) {
+		audio_error(" error setting hw params\n");
+	}
+
+	bcm2835_audio_setup(alsa_stream);
+
+	/* in preparation of the stream, set the controls (volume level) of the stream */
+	bcm2835_audio_set_ctls(alsa_stream->chip);
+
+
+	memset(&alsa_stream->pcm_indirect, 0, sizeof(alsa_stream->pcm_indirect));
+
+	alsa_stream->pcm_indirect.hw_buffer_size =
+	alsa_stream->pcm_indirect.sw_buffer_size =
+		snd_pcm_lib_buffer_bytes(substream);
+
+	alsa_stream->buffer_size = snd_pcm_lib_buffer_bytes(substream);
+	alsa_stream->period_size = snd_pcm_lib_period_bytes(substream);
+	alsa_stream->pos = 0;
+
+	audio_debug("buffer_size=%d, period_size=%d pos=%d frame_bits=%d\n",
+		      alsa_stream->buffer_size, alsa_stream->period_size,
+		      alsa_stream->pos, runtime->frame_bits);
+
+	audio_info(" .. OUT\n");
+	return 0;
+}
+
+static void snd_bcm2835_pcm_transfer(struct snd_pcm_substream *substream,
+				    struct snd_pcm_indirect *rec, size_t bytes)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
+	void *src = (void *)(substream->runtime->dma_area + rec->sw_data);
+	int err;
+
+	err = bcm2835_audio_write(alsa_stream, bytes, src);
+	if (err)
+		audio_error(" Failed to transfer to alsa device (%d)\n", err);
+
+}
+
+static int snd_bcm2835_pcm_ack(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
+	struct snd_pcm_indirect *pcm_indirect = &alsa_stream->pcm_indirect;
+
+	pcm_indirect->hw_queue_size = runtime->hw.buffer_bytes_max;
+	snd_pcm_indirect_playback_transfer(substream, pcm_indirect,
+					   snd_bcm2835_pcm_transfer);
+	return 0;
+}
+
+/* trigger callback */
+static int snd_bcm2835_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
+	int err = 0;
+
+	audio_info(" .. IN\n");
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		audio_debug("bcm2835_AUDIO_TRIGGER_START running=%d\n",
+			      alsa_stream->running);
+		if (!alsa_stream->running) {
+			err = bcm2835_audio_start(alsa_stream);
+			if (err == 0) {
+				alsa_stream->pcm_indirect.hw_io =
+				alsa_stream->pcm_indirect.hw_data =
+					bytes_to_frames(runtime,
+							alsa_stream->pos);
+				substream->ops->ack(substream);
+				alsa_stream->running = 1;
+				alsa_stream->draining = 1;
+			} else {
+				audio_error(" Failed to START alsa device (%d)\n", err);
+			}
+		}
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+		audio_debug
+		    ("bcm2835_AUDIO_TRIGGER_STOP running=%d draining=%d\n",
+			     alsa_stream->running, runtime->status->state == SNDRV_PCM_STATE_DRAINING);
+		if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
+			audio_info("DRAINING\n");
+			alsa_stream->draining = 1;
+		} else {
+			audio_info("DROPPING\n");
+			alsa_stream->draining = 0;
+		}
+		if (alsa_stream->running) {
+			err = bcm2835_audio_stop(alsa_stream);
+			if (err != 0)
+				audio_error(" Failed to STOP alsa device (%d)\n", err);
+			alsa_stream->running = 0;
+		}
+		break;
+	default:
+		err = -EINVAL;
+	}
+
+	audio_info(" .. OUT\n");
+	return err;
+}
+
+/* pointer callback */
+static snd_pcm_uframes_t
+snd_bcm2835_pcm_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	bcm2835_alsa_stream_t *alsa_stream = runtime->private_data;
+
+	audio_info(" .. IN\n");
+
+	audio_debug("pcm_pointer... (%d) hwptr=%d appl=%d pos=%d\n", 0,
+		      frames_to_bytes(runtime, runtime->status->hw_ptr),
+		      frames_to_bytes(runtime, runtime->control->appl_ptr),
+		      alsa_stream->pos);
+
+	audio_info(" .. OUT\n");
+	return snd_pcm_indirect_playback_pointer(substream,
+						 &alsa_stream->pcm_indirect,
+						 alsa_stream->pos);
+}
+
+static int snd_bcm2835_pcm_lib_ioctl(struct snd_pcm_substream *substream,
+				     unsigned int cmd, void *arg)
+{
+	int ret = snd_pcm_lib_ioctl(substream, cmd, arg);
+	audio_info(" .. substream=%p, cmd=%d, arg=%p (%x) ret=%d\n", substream,
+		    cmd, arg, arg ? *(unsigned *)arg : 0, ret);
+	return ret;
+}
+
+/* operators */
+static struct snd_pcm_ops snd_bcm2835_playback_ops = {
+	.open = snd_bcm2835_playback_open,
+	.close = snd_bcm2835_playback_close,
+	.ioctl = snd_bcm2835_pcm_lib_ioctl,
+	.hw_params = snd_bcm2835_pcm_hw_params,
+	.hw_free = snd_bcm2835_pcm_hw_free,
+	.prepare = snd_bcm2835_pcm_prepare,
+	.trigger = snd_bcm2835_pcm_trigger,
+	.pointer = snd_bcm2835_pcm_pointer,
+	.ack = snd_bcm2835_pcm_ack,
+};
+
+static struct snd_pcm_ops snd_bcm2835_playback_spdif_ops = {
+	.open = snd_bcm2835_playback_spdif_open,
+	.close = snd_bcm2835_playback_close,
+	.ioctl = snd_bcm2835_pcm_lib_ioctl,
+	.hw_params = snd_bcm2835_pcm_hw_params,
+	.hw_free = snd_bcm2835_pcm_hw_free,
+	.prepare = snd_bcm2835_pcm_prepare,
+	.trigger = snd_bcm2835_pcm_trigger,
+	.pointer = snd_bcm2835_pcm_pointer,
+	.ack = snd_bcm2835_pcm_ack,
+};
+
+/* create a pcm device */
+int snd_bcm2835_new_pcm(bcm2835_chip_t * chip)
+{
+	struct snd_pcm *pcm;
+	int err;
+
+	audio_info(" .. IN\n");
+	mutex_init(&chip->audio_mutex);
+	if(mutex_lock_interruptible(&chip->audio_mutex))
+	{
+		audio_error("Interrupted whilst waiting for lock\n");
+		return -EINTR;
+	}
+	err =
+	    snd_pcm_new(chip->card, "bcm2835 ALSA", 0, MAX_SUBSTREAMS, 0, &pcm);
+	if (err < 0)
+		return err;
+	pcm->private_data = chip;
+	strcpy(pcm->name, "bcm2835 ALSA");
+	chip->pcm = pcm;
+	chip->dest = AUDIO_DEST_AUTO;
+	chip->volume = alsa2chip(0);
+	chip->mute = CTRL_VOL_UNMUTE;	/*disable mute on startup */
+	/* set operators */
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+			&snd_bcm2835_playback_ops);
+
+	/* pre-allocation of buffers */
+	/* NOTE: this may fail */
+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
+					      snd_dma_continuous_data
+					      (GFP_KERNEL), 64 * 1024,
+					      64 * 1024);
+
+	mutex_unlock(&chip->audio_mutex);
+	audio_info(" .. OUT\n");
+
+	return 0;
+}
+
+int snd_bcm2835_new_spdif_pcm(bcm2835_chip_t * chip)
+{
+	struct snd_pcm *pcm;
+	int err;
+
+	audio_info(" .. IN\n");
+	if(mutex_lock_interruptible(&chip->audio_mutex))
+	{
+		audio_error("Interrupted whilst waiting for lock\n");
+		return -EINTR;
+	}
+	err = snd_pcm_new(chip->card, "bcm2835 ALSA", 1, 1, 0, &pcm);
+	if (err < 0)
+		return err;
+
+	pcm->private_data = chip;
+	strcpy(pcm->name, "bcm2835 IEC958/HDMI");
+	chip->pcm_spdif = pcm;
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+			&snd_bcm2835_playback_spdif_ops);
+
+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
+					      snd_dma_continuous_data (GFP_KERNEL),
+					      64 * 1024, 64 * 1024);
+	mutex_unlock(&chip->audio_mutex);
+	audio_info(" .. OUT\n");
+
+	return 0;
+}
diff -Nur linux-3.18.10/sound/arm/bcm2835-vchiq.c linux-rpi/sound/arm/bcm2835-vchiq.c
--- linux-3.18.10/sound/arm/bcm2835-vchiq.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/arm/bcm2835-vchiq.c	2015-03-26 11:47:02.440245724 +0100
@@ -0,0 +1,902 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/mm.h>
+#include <linux/syscalls.h>
+#include <asm/uaccess.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/atomic.h>
+#include <linux/module.h>
+#include <linux/completion.h>
+
+#include "bcm2835.h"
+
+/* ---- Include Files -------------------------------------------------------- */
+
+#include "interface/vchi/vchi.h"
+#include "vc_vchi_audioserv_defs.h"
+
+/* ---- Private Constants and Types ------------------------------------------ */
+
+#define BCM2835_AUDIO_STOP           0
+#define BCM2835_AUDIO_START          1
+#define BCM2835_AUDIO_WRITE          2
+
+/* Logging macros (for remapping to other logging mechanisms, i.e., printf) */
+#ifdef AUDIO_DEBUG_ENABLE
+	#define LOG_ERR( fmt, arg... )   pr_err( "%s:%d " fmt, __func__, __LINE__, ##arg)
+	#define LOG_WARN( fmt, arg... )  pr_info( "%s:%d " fmt, __func__, __LINE__, ##arg)
+	#define LOG_INFO( fmt, arg... )  pr_info( "%s:%d " fmt, __func__, __LINE__, ##arg)
+	#define LOG_DBG( fmt, arg... )   pr_info( "%s:%d " fmt, __func__, __LINE__, ##arg)
+#else
+	#define LOG_ERR( fmt, arg... )   pr_err( "%s:%d " fmt, __func__, __LINE__, ##arg)
+	#define LOG_WARN( fmt, arg... )
+	#define LOG_INFO( fmt, arg... )
+	#define LOG_DBG( fmt, arg... )
+#endif
+
+typedef struct opaque_AUDIO_INSTANCE_T {
+	uint32_t num_connections;
+	VCHI_SERVICE_HANDLE_T vchi_handle[VCHI_MAX_NUM_CONNECTIONS];
+	struct completion msg_avail_comp;
+	struct mutex vchi_mutex;
+	bcm2835_alsa_stream_t *alsa_stream;
+	int32_t result;
+	short peer_version;
+} AUDIO_INSTANCE_T;
+
+bool force_bulk = false;
+
+/* ---- Private Variables ---------------------------------------------------- */
+
+/* ---- Private Function Prototypes ------------------------------------------ */
+
+/* ---- Private Functions ---------------------------------------------------- */
+
+static int bcm2835_audio_stop_worker(bcm2835_alsa_stream_t * alsa_stream);
+static int bcm2835_audio_start_worker(bcm2835_alsa_stream_t * alsa_stream);
+static int bcm2835_audio_write_worker(bcm2835_alsa_stream_t *alsa_stream,
+				      uint32_t count, void *src);
+
+typedef struct {
+	struct work_struct my_work;
+	bcm2835_alsa_stream_t *alsa_stream;
+	int cmd;
+	void *src;
+	uint32_t count;
+} my_work_t;
+
+static void my_wq_function(struct work_struct *work)
+{
+	my_work_t *w = (my_work_t *) work;
+	int ret = -9;
+	LOG_DBG(" .. IN %p:%d\n", w->alsa_stream, w->cmd);
+	switch (w->cmd) {
+	case BCM2835_AUDIO_START:
+		ret = bcm2835_audio_start_worker(w->alsa_stream);
+		break;
+	case BCM2835_AUDIO_STOP:
+		ret = bcm2835_audio_stop_worker(w->alsa_stream);
+		break;
+	case BCM2835_AUDIO_WRITE:
+		ret = bcm2835_audio_write_worker(w->alsa_stream, w->count,
+						 w->src);
+		break;
+	default:
+		LOG_ERR(" Unexpected work: %p:%d\n", w->alsa_stream, w->cmd);
+		break;
+	}
+	kfree((void *)work);
+	LOG_DBG(" .. OUT %d\n", ret);
+}
+
+int bcm2835_audio_start(bcm2835_alsa_stream_t * alsa_stream)
+{
+	int ret = -1;
+	LOG_DBG(" .. IN\n");
+	if (alsa_stream->my_wq) {
+		my_work_t *work = kmalloc(sizeof(my_work_t), GFP_ATOMIC);
+		/*--- Queue some work (item 1) ---*/
+		if (work) {
+			INIT_WORK((struct work_struct *)work, my_wq_function);
+			work->alsa_stream = alsa_stream;
+			work->cmd = BCM2835_AUDIO_START;
+			if (queue_work
+			    (alsa_stream->my_wq, (struct work_struct *)work))
+				ret = 0;
+		} else
+			LOG_ERR(" .. Error: NULL work kmalloc\n");
+	}
+	LOG_DBG(" .. OUT %d\n", ret);
+	return ret;
+}
+
+int bcm2835_audio_stop(bcm2835_alsa_stream_t * alsa_stream)
+{
+	int ret = -1;
+	LOG_DBG(" .. IN\n");
+	if (alsa_stream->my_wq) {
+		my_work_t *work = kmalloc(sizeof(my_work_t), GFP_ATOMIC);
+		 /*--- Queue some work (item 1) ---*/
+		if (work) {
+			INIT_WORK((struct work_struct *)work, my_wq_function);
+			work->alsa_stream = alsa_stream;
+			work->cmd = BCM2835_AUDIO_STOP;
+			if (queue_work
+			    (alsa_stream->my_wq, (struct work_struct *)work))
+				ret = 0;
+		} else
+			LOG_ERR(" .. Error: NULL work kmalloc\n");
+	}
+	LOG_DBG(" .. OUT %d\n", ret);
+	return ret;
+}
+
+int bcm2835_audio_write(bcm2835_alsa_stream_t *alsa_stream,
+			uint32_t count, void *src)
+{
+	int ret = -1;
+	LOG_DBG(" .. IN\n");
+	if (alsa_stream->my_wq) {
+		my_work_t *work = kmalloc(sizeof(my_work_t), GFP_ATOMIC);
+		 /*--- Queue some work (item 1) ---*/
+		if (work) {
+			INIT_WORK((struct work_struct *)work, my_wq_function);
+			work->alsa_stream = alsa_stream;
+			work->cmd = BCM2835_AUDIO_WRITE;
+			work->src = src;
+			work->count = count;
+			if (queue_work
+			    (alsa_stream->my_wq, (struct work_struct *)work))
+				ret = 0;
+		} else
+			LOG_ERR(" .. Error: NULL work kmalloc\n");
+	}
+	LOG_DBG(" .. OUT %d\n", ret);
+	return ret;
+}
+
+void my_workqueue_init(bcm2835_alsa_stream_t * alsa_stream)
+{
+	alsa_stream->my_wq = alloc_workqueue("my_queue", WQ_HIGHPRI, 1);
+	return;
+}
+
+void my_workqueue_quit(bcm2835_alsa_stream_t * alsa_stream)
+{
+	if (alsa_stream->my_wq) {
+		flush_workqueue(alsa_stream->my_wq);
+		destroy_workqueue(alsa_stream->my_wq);
+		alsa_stream->my_wq = NULL;
+	}
+	return;
+}
+
+static void audio_vchi_callback(void *param,
+				const VCHI_CALLBACK_REASON_T reason,
+				void *msg_handle)
+{
+	AUDIO_INSTANCE_T *instance = (AUDIO_INSTANCE_T *) param;
+	int32_t status;
+	int32_t msg_len;
+	VC_AUDIO_MSG_T m;
+	LOG_DBG(" .. IN instance=%p, handle=%p, alsa=%p, reason=%d, handle=%p\n",
+		instance, instance ? instance->vchi_handle[0] : NULL, instance ? instance->alsa_stream : NULL, reason, msg_handle);
+
+	if (reason != VCHI_CALLBACK_MSG_AVAILABLE) {
+		return;
+	}
+	if (!instance) {
+		LOG_ERR(" .. instance is null\n");
+		BUG();
+		return;
+  }
+  if (!instance->vchi_handle[0]) {
+		LOG_ERR(" .. instance->vchi_handle[0] is null\n");
+		BUG();
+		return;
+  }
+	status = vchi_msg_dequeue(instance->vchi_handle[0],
+				  &m, sizeof m, &msg_len, VCHI_FLAGS_NONE);
+	if (m.type == VC_AUDIO_MSG_TYPE_RESULT) {
+		LOG_DBG
+		    (" .. instance=%p, m.type=VC_AUDIO_MSG_TYPE_RESULT, success=%d\n",
+		     instance, m.u.result.success);
+		instance->result = m.u.result.success;
+		complete(&instance->msg_avail_comp);
+	} else if (m.type == VC_AUDIO_MSG_TYPE_COMPLETE) {
+		bcm2835_alsa_stream_t *alsa_stream = instance->alsa_stream;
+		irq_handler_t callback = (irq_handler_t) m.u.complete.callback;
+		LOG_DBG
+		    (" .. instance=%p, m.type=VC_AUDIO_MSG_TYPE_COMPLETE, complete=%d\n",
+		     instance, m.u.complete.count);
+		if (alsa_stream && callback) {
+			atomic_add(m.u.complete.count, &alsa_stream->retrieved);
+			callback(0, alsa_stream);
+		} else {
+			LOG_ERR(" .. unexpected alsa_stream=%p, callback=%p\n",
+				alsa_stream, callback);
+		}
+	} else {
+		LOG_ERR(" .. unexpected m.type=%d\n", m.type);
+	}
+	LOG_DBG(" .. OUT\n");
+}
+
+static AUDIO_INSTANCE_T *vc_vchi_audio_init(VCHI_INSTANCE_T vchi_instance,
+					    VCHI_CONNECTION_T **
+					    vchi_connections,
+					    uint32_t num_connections)
+{
+	uint32_t i;
+	AUDIO_INSTANCE_T *instance;
+	int status;
+
+	LOG_DBG("%s: start", __func__);
+
+	if (num_connections > VCHI_MAX_NUM_CONNECTIONS) {
+		LOG_ERR("%s: unsupported number of connections %u (max=%u)\n",
+			__func__, num_connections, VCHI_MAX_NUM_CONNECTIONS);
+
+		return NULL;
+	}
+	/* Allocate memory for this instance */
+	instance = kmalloc(sizeof(*instance), GFP_KERNEL);
+	if (!instance)
+		return NULL;
+
+	memset(instance, 0, sizeof(*instance));
+	instance->num_connections = num_connections;
+
+	/* Create a lock for exclusive, serialized VCHI connection access */
+	mutex_init(&instance->vchi_mutex);
+	/* Open the VCHI service connections */
+	for (i = 0; i < num_connections; i++) {
+		SERVICE_CREATION_T params = {
+			VCHI_VERSION_EX(VC_AUDIOSERV_VER, VC_AUDIOSERV_MIN_VER),
+			VC_AUDIO_SERVER_NAME,	// 4cc service code
+			vchi_connections[i],	// passed in fn pointers
+			0,	// rx fifo size (unused)
+			0,	// tx fifo size (unused)
+			audio_vchi_callback,	// service callback
+			instance,	// service callback parameter
+			1,	//TODO: remove VCOS_FALSE,   // unaligned bulk recieves
+			1,	//TODO: remove VCOS_FALSE,   // unaligned bulk transmits
+			0	// want crc check on bulk transfers
+		};
+
+		LOG_DBG("%s: about to open %i\n", __func__, i);
+		status = vchi_service_open(vchi_instance, &params,
+					   &instance->vchi_handle[i]);
+		LOG_DBG("%s: opened %i: %p=%d\n", __func__, i, instance->vchi_handle[i], status);
+		if (status) {
+			LOG_ERR
+			    ("%s: failed to open VCHI service connection (status=%d)\n",
+			     __func__, status);
+
+			goto err_close_services;
+		}
+		/* Finished with the service for now */
+		vchi_service_release(instance->vchi_handle[i]);
+	}
+
+	LOG_DBG("%s: okay\n", __func__);
+	return instance;
+
+err_close_services:
+	for (i = 0; i < instance->num_connections; i++) {
+		LOG_ERR("%s: closing %i: %p\n", __func__, i, instance->vchi_handle[i]);
+		if (instance->vchi_handle[i])
+			vchi_service_close(instance->vchi_handle[i]);
+	}
+
+	kfree(instance);
+	LOG_ERR("%s: error\n", __func__);
+
+	return NULL;
+}
+
+static int32_t vc_vchi_audio_deinit(AUDIO_INSTANCE_T * instance)
+{
+	uint32_t i;
+
+	LOG_DBG(" .. IN\n");
+
+	if (instance == NULL) {
+		LOG_ERR("%s: invalid handle %p\n", __func__, instance);
+
+		return -1;
+	}
+
+	LOG_DBG(" .. about to lock (%d)\n", instance->num_connections);
+	if(mutex_lock_interruptible(&instance->vchi_mutex))
+	{
+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
+		return -EINTR;
+	}
+
+	/* Close all VCHI service connections */
+	for (i = 0; i < instance->num_connections; i++) {
+		int32_t success;
+		LOG_DBG(" .. %i:closing %p\n", i, instance->vchi_handle[i]);
+		vchi_service_use(instance->vchi_handle[i]);
+
+		success = vchi_service_close(instance->vchi_handle[i]);
+		if (success != 0) {
+			LOG_ERR
+			    ("%s: failed to close VCHI service connection (status=%d)\n",
+			     __func__, success);
+		}
+	}
+
+	mutex_unlock(&instance->vchi_mutex);
+
+	kfree(instance);
+
+	LOG_DBG(" .. OUT\n");
+
+	return 0;
+}
+
+static int bcm2835_audio_open_connection(bcm2835_alsa_stream_t * alsa_stream)
+{
+	static VCHI_INSTANCE_T vchi_instance;
+	static VCHI_CONNECTION_T *vchi_connection;
+	static int initted;
+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
+	int ret;
+	LOG_DBG(" .. IN\n");
+
+	LOG_INFO("%s: start\n", __func__);
+	BUG_ON(instance);
+	if (instance) {
+		LOG_ERR("%s: VCHI instance already open (%p)\n",
+			__func__, instance);
+		instance->alsa_stream = alsa_stream;
+		alsa_stream->instance = instance;
+		ret = 0;	// xxx todo -1;
+		goto err_free_mem;
+	}
+
+	/* Initialize and create a VCHI connection */
+	if (!initted) {
+	  ret = vchi_initialise(&vchi_instance);
+	  if (ret != 0) {
+		  LOG_ERR("%s: failed to initialise VCHI instance (ret=%d)\n",
+			  __func__, ret);
+
+		  ret = -EIO;
+		  goto err_free_mem;
+	  }
+	  ret = vchi_connect(NULL, 0, vchi_instance);
+	  if (ret != 0) {
+		  LOG_ERR("%s: failed to connect VCHI instance (ret=%d)\n",
+			  __func__, ret);
+
+		  ret = -EIO;
+		  goto err_free_mem;
+	  }
+	initted = 1;
+	}
+
+	/* Initialize an instance of the audio service */
+	instance = vc_vchi_audio_init(vchi_instance, &vchi_connection, 1);
+
+	if (instance == NULL) {
+		LOG_ERR("%s: failed to initialize audio service\n", __func__);
+
+		ret = -EPERM;
+		goto err_free_mem;
+	}
+
+	instance->alsa_stream = alsa_stream;
+	alsa_stream->instance = instance;
+
+	LOG_DBG(" success !\n");
+err_free_mem:
+	LOG_DBG(" .. OUT\n");
+
+	return ret;
+}
+
+int bcm2835_audio_open(bcm2835_alsa_stream_t * alsa_stream)
+{
+	AUDIO_INSTANCE_T *instance;
+	VC_AUDIO_MSG_T m;
+	int32_t success;
+	int ret;
+	LOG_DBG(" .. IN\n");
+
+	my_workqueue_init(alsa_stream);
+
+	ret = bcm2835_audio_open_connection(alsa_stream);
+	if (ret != 0) {
+		ret = -1;
+		goto exit;
+	}
+	instance = alsa_stream->instance;
+	LOG_DBG(" instance (%p)\n", instance);
+
+	if(mutex_lock_interruptible(&instance->vchi_mutex))
+	{
+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
+		return -EINTR;
+	}
+	vchi_service_use(instance->vchi_handle[0]);
+
+	m.type = VC_AUDIO_MSG_TYPE_OPEN;
+
+	/* Send the message to the videocore */
+	success = vchi_msg_queue(instance->vchi_handle[0],
+				 &m, sizeof m,
+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+
+	if (success != 0) {
+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
+			__func__, success);
+
+		ret = -1;
+		goto unlock;
+	}
+
+	ret = 0;
+
+unlock:
+	vchi_service_release(instance->vchi_handle[0]);
+	mutex_unlock(&instance->vchi_mutex);
+exit:
+	LOG_DBG(" .. OUT\n");
+	return ret;
+}
+
+static int bcm2835_audio_set_ctls_chan(bcm2835_alsa_stream_t * alsa_stream,
+				       bcm2835_chip_t * chip)
+{
+	VC_AUDIO_MSG_T m;
+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
+	int32_t success;
+	int ret;
+	LOG_DBG(" .. IN\n");
+
+	LOG_INFO
+	    (" Setting ALSA dest(%d), volume(%d)\n", chip->dest, chip->volume);
+
+	if(mutex_lock_interruptible(&instance->vchi_mutex))
+	{
+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
+		return -EINTR;
+	}
+	vchi_service_use(instance->vchi_handle[0]);
+
+	instance->result = -1;
+
+	m.type = VC_AUDIO_MSG_TYPE_CONTROL;
+	m.u.control.dest = chip->dest;
+	m.u.control.volume = chip->volume;
+
+	/* Create the message available completion */
+	init_completion(&instance->msg_avail_comp);
+
+	/* Send the message to the videocore */
+	success = vchi_msg_queue(instance->vchi_handle[0],
+				 &m, sizeof m,
+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+
+	if (success != 0) {
+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
+			__func__, success);
+
+		ret = -1;
+		goto unlock;
+	}
+
+	/* We are expecting a reply from the videocore */
+	ret = wait_for_completion_interruptible(&instance->msg_avail_comp);
+	if (ret) {
+		LOG_ERR("%s: failed on waiting for event (status=%d)\n",
+			__func__, success);
+		goto unlock;
+	}
+
+	if (instance->result != 0) {
+		LOG_ERR("%s: result=%d\n", __func__, instance->result);
+
+		ret = -1;
+		goto unlock;
+	}
+
+	ret = 0;
+
+unlock:
+	vchi_service_release(instance->vchi_handle[0]);
+	mutex_unlock(&instance->vchi_mutex);
+
+	LOG_DBG(" .. OUT\n");
+	return ret;
+}
+
+int bcm2835_audio_set_ctls(bcm2835_chip_t * chip)
+{
+	int i;
+	int ret = 0;
+	LOG_DBG(" .. IN\n");
+	LOG_DBG(" Setting ALSA dest(%d), volume(%d)\n", chip->dest, chip->volume);
+
+	/* change ctls for all substreams */
+	for (i = 0; i < MAX_SUBSTREAMS; i++) {
+		if (chip->avail_substreams & (1 << i)) {
+			if (!chip->alsa_stream[i])
+			{
+				LOG_DBG(" No ALSA stream available?! %i:%p (%x)\n", i, chip->alsa_stream[i], chip->avail_substreams);
+				ret = 0;
+			}
+			else if (bcm2835_audio_set_ctls_chan /* returns 0 on success */
+				 (chip->alsa_stream[i], chip) != 0)
+				 {
+					LOG_ERR("Couldn't set the controls for stream %d\n", i);
+					ret = -1;
+				 }
+			else LOG_DBG(" Controls set for stream %d\n", i);
+		}
+	}
+	LOG_DBG(" .. OUT ret=%d\n", ret);
+	return ret;
+}
+
+int bcm2835_audio_set_params(bcm2835_alsa_stream_t * alsa_stream,
+			     uint32_t channels, uint32_t samplerate,
+			     uint32_t bps)
+{
+	VC_AUDIO_MSG_T m;
+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
+	int32_t success;
+	int ret;
+	LOG_DBG(" .. IN\n");
+
+	LOG_INFO
+	    (" Setting ALSA channels(%d), samplerate(%d), bits-per-sample(%d)\n",
+	     channels, samplerate, bps);
+
+	/* resend ctls - alsa_stream may not have been open when first send */
+	ret = bcm2835_audio_set_ctls_chan(alsa_stream, alsa_stream->chip);
+	if (ret != 0) {
+		LOG_ERR(" Alsa controls not supported\n");
+		return -EINVAL;
+	}
+
+	if(mutex_lock_interruptible(&instance->vchi_mutex))
+	{
+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
+		return -EINTR;
+	}
+	vchi_service_use(instance->vchi_handle[0]);
+
+	instance->result = -1;
+
+	m.type = VC_AUDIO_MSG_TYPE_CONFIG;
+	m.u.config.channels = channels;
+	m.u.config.samplerate = samplerate;
+	m.u.config.bps = bps;
+
+	/* Create the message available completion */
+	init_completion(&instance->msg_avail_comp);
+
+	/* Send the message to the videocore */
+	success = vchi_msg_queue(instance->vchi_handle[0],
+				 &m, sizeof m,
+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+
+	if (success != 0) {
+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
+			__func__, success);
+
+		ret = -1;
+		goto unlock;
+	}
+
+	/* We are expecting a reply from the videocore */
+	ret = wait_for_completion_interruptible(&instance->msg_avail_comp);
+	if (ret) {
+		LOG_ERR("%s: failed on waiting for event (status=%d)\n",
+			__func__, success);
+		goto unlock;
+	}
+
+	if (instance->result != 0) {
+		LOG_ERR("%s: result=%d", __func__, instance->result);
+
+		ret = -1;
+		goto unlock;
+	}
+
+	ret = 0;
+
+unlock:
+	vchi_service_release(instance->vchi_handle[0]);
+	mutex_unlock(&instance->vchi_mutex);
+
+	LOG_DBG(" .. OUT\n");
+	return ret;
+}
+
+int bcm2835_audio_setup(bcm2835_alsa_stream_t * alsa_stream)
+{
+	LOG_DBG(" .. IN\n");
+
+	LOG_DBG(" .. OUT\n");
+
+	return 0;
+}
+
+static int bcm2835_audio_start_worker(bcm2835_alsa_stream_t * alsa_stream)
+{
+	VC_AUDIO_MSG_T m;
+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
+	int32_t success;
+	int ret;
+	LOG_DBG(" .. IN\n");
+
+	if(mutex_lock_interruptible(&instance->vchi_mutex))
+	{
+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
+		return -EINTR;
+	}
+	vchi_service_use(instance->vchi_handle[0]);
+
+	m.type = VC_AUDIO_MSG_TYPE_START;
+
+	/* Send the message to the videocore */
+	success = vchi_msg_queue(instance->vchi_handle[0],
+				 &m, sizeof m,
+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+
+	if (success != 0) {
+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
+			__func__, success);
+
+		ret = -1;
+		goto unlock;
+	}
+
+	ret = 0;
+
+unlock:
+	vchi_service_release(instance->vchi_handle[0]);
+	mutex_unlock(&instance->vchi_mutex);
+	LOG_DBG(" .. OUT\n");
+	return ret;
+}
+
+static int bcm2835_audio_stop_worker(bcm2835_alsa_stream_t * alsa_stream)
+{
+	VC_AUDIO_MSG_T m;
+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
+	int32_t success;
+	int ret;
+	LOG_DBG(" .. IN\n");
+
+	if(mutex_lock_interruptible(&instance->vchi_mutex))
+	{
+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
+		return -EINTR;
+	}
+	vchi_service_use(instance->vchi_handle[0]);
+
+	m.type = VC_AUDIO_MSG_TYPE_STOP;
+	m.u.stop.draining = alsa_stream->draining;
+
+	/* Send the message to the videocore */
+	success = vchi_msg_queue(instance->vchi_handle[0],
+				 &m, sizeof m,
+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+
+	if (success != 0) {
+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
+			__func__, success);
+
+		ret = -1;
+		goto unlock;
+	}
+
+	ret = 0;
+
+unlock:
+	vchi_service_release(instance->vchi_handle[0]);
+	mutex_unlock(&instance->vchi_mutex);
+	LOG_DBG(" .. OUT\n");
+	return ret;
+}
+
+int bcm2835_audio_close(bcm2835_alsa_stream_t * alsa_stream)
+{
+	VC_AUDIO_MSG_T m;
+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
+	int32_t success;
+	int ret;
+	LOG_DBG(" .. IN\n");
+
+	my_workqueue_quit(alsa_stream);
+
+	if(mutex_lock_interruptible(&instance->vchi_mutex))
+	{
+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
+		return -EINTR;
+	}
+	vchi_service_use(instance->vchi_handle[0]);
+
+	m.type = VC_AUDIO_MSG_TYPE_CLOSE;
+
+	/* Create the message available completion */
+	init_completion(&instance->msg_avail_comp);
+
+	/* Send the message to the videocore */
+	success = vchi_msg_queue(instance->vchi_handle[0],
+				 &m, sizeof m,
+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+
+	if (success != 0) {
+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
+			__func__, success);
+		ret = -1;
+		goto unlock;
+	}
+
+	ret = wait_for_completion_interruptible(&instance->msg_avail_comp);
+	if (ret) {
+		LOG_ERR("%s: failed on waiting for event (status=%d)\n",
+			__func__, success);
+		goto unlock;
+	}
+	if (instance->result != 0) {
+		LOG_ERR("%s: failed result (status=%d)\n",
+			__func__, instance->result);
+
+		ret = -1;
+		goto unlock;
+	}
+
+	ret = 0;
+
+unlock:
+	vchi_service_release(instance->vchi_handle[0]);
+	mutex_unlock(&instance->vchi_mutex);
+
+	/* Stop the audio service */
+	if (instance) {
+		vc_vchi_audio_deinit(instance);
+		alsa_stream->instance = NULL;
+	}
+	LOG_DBG(" .. OUT\n");
+	return ret;
+}
+
+int bcm2835_audio_write_worker(bcm2835_alsa_stream_t *alsa_stream,
+			       uint32_t count, void *src)
+{
+	VC_AUDIO_MSG_T m;
+	AUDIO_INSTANCE_T *instance = alsa_stream->instance;
+	int32_t success;
+	int ret;
+
+	LOG_DBG(" .. IN\n");
+
+	LOG_INFO(" Writing %d bytes from %p\n", count, src);
+
+	if(mutex_lock_interruptible(&instance->vchi_mutex))
+	{
+		LOG_DBG("Interrupted whilst waiting for lock on (%d)\n",instance->num_connections);
+		return -EINTR;
+	}
+	vchi_service_use(instance->vchi_handle[0]);
+
+	if ( instance->peer_version==0 && vchi_get_peer_version(instance->vchi_handle[0], &instance->peer_version) == 0 ) {
+		LOG_DBG("%s: client version %d connected\n", __func__, instance->peer_version);
+	}
+	m.type = VC_AUDIO_MSG_TYPE_WRITE;
+	m.u.write.count = count;
+	// old version uses bulk, new version uses control
+	m.u.write.max_packet = instance->peer_version < 2 || force_bulk ? 0:4000;
+	m.u.write.callback = alsa_stream->fifo_irq_handler;
+	m.u.write.cookie = alsa_stream;
+	m.u.write.silence = src == NULL;
+
+	/* Send the message to the videocore */
+	success = vchi_msg_queue(instance->vchi_handle[0],
+				 &m, sizeof m,
+				 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+
+	if (success != 0) {
+		LOG_ERR("%s: failed on vchi_msg_queue (status=%d)\n",
+			__func__, success);
+
+		ret = -1;
+		goto unlock;
+	}
+	if (!m.u.write.silence) {
+		if (m.u.write.max_packet == 0) {
+			/* Send the message to the videocore */
+			success = vchi_bulk_queue_transmit(instance->vchi_handle[0],
+							   src, count,
+							   0 *
+							   VCHI_FLAGS_BLOCK_UNTIL_QUEUED
+							   +
+							   1 *
+							   VCHI_FLAGS_BLOCK_UNTIL_DATA_READ,
+							   NULL);
+		} else {
+			while (count > 0) {
+				int bytes = min((int)m.u.write.max_packet, (int)count);
+				success = vchi_msg_queue(instance->vchi_handle[0],
+							 src, bytes,
+							 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL);
+				src = (char *)src + bytes;
+				count -= bytes;
+			}
+		}
+		if (success != 0) {
+			LOG_ERR
+			    ("%s: failed on vchi_bulk_queue_transmit (status=%d)\n",
+			     __func__, success);
+
+			ret = -1;
+			goto unlock;
+		}
+	}
+	ret = 0;
+
+unlock:
+	vchi_service_release(instance->vchi_handle[0]);
+	mutex_unlock(&instance->vchi_mutex);
+	LOG_DBG(" .. OUT\n");
+	return ret;
+}
+
+/**
+  * Returns all buffers from arm->vc
+  */
+void bcm2835_audio_flush_buffers(bcm2835_alsa_stream_t * alsa_stream)
+{
+	LOG_DBG(" .. IN\n");
+	LOG_DBG(" .. OUT\n");
+	return;
+}
+
+/**
+  * Forces VC to flush(drop) its filled playback buffers and
+  * return them the us. (VC->ARM)
+  */
+void bcm2835_audio_flush_playback_buffers(bcm2835_alsa_stream_t * alsa_stream)
+{
+	LOG_DBG(" .. IN\n");
+	LOG_DBG(" .. OUT\n");
+}
+
+uint32_t bcm2835_audio_retrieve_buffers(bcm2835_alsa_stream_t * alsa_stream)
+{
+	uint32_t count = atomic_read(&alsa_stream->retrieved);
+	atomic_sub(count, &alsa_stream->retrieved);
+	return count;
+}
+
+module_param(force_bulk, bool, 0444);
+MODULE_PARM_DESC(force_bulk, "Force use of vchiq bulk for audio");
diff -Nur linux-3.18.10/sound/arm/Kconfig linux-rpi/sound/arm/Kconfig
--- linux-3.18.10/sound/arm/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/sound/arm/Kconfig	2015-03-26 11:47:02.428245711 +0100
@@ -39,5 +39,12 @@
 	  Say Y or M if you want to support any AC97 codec attached to
 	  the PXA2xx AC97 interface.
 
+config SND_BCM2835
+	tristate "BCM2835 ALSA driver"
+	depends on (ARCH_BCM2708 || ARCH_BCM2709) && BCM2708_VCHIQ && SND
+	select SND_PCM
+	help
+	  Say Y or M if you want to support BCM2835 Alsa pcm card driver
+
 endif	# SND_ARM
 
diff -Nur linux-3.18.10/sound/arm/Makefile linux-rpi/sound/arm/Makefile
--- linux-3.18.10/sound/arm/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/sound/arm/Makefile	2015-03-26 11:47:02.428245711 +0100
@@ -14,3 +14,8 @@
 
 obj-$(CONFIG_SND_PXA2XX_AC97)	+= snd-pxa2xx-ac97.o
 snd-pxa2xx-ac97-objs		:= pxa2xx-ac97.o
+
+obj-$(CONFIG_SND_BCM2835)	+= snd-bcm2835.o
+snd-bcm2835-objs		:= bcm2835.o bcm2835-ctl.o bcm2835-pcm.o bcm2835-vchiq.o
+
+ccflags-y += -Idrivers/misc/vc04_services -Idrivers/misc/vc04_services/interface/vcos/linuxkernel -D__VCCOREVER__=0x04000000
diff -Nur linux-3.18.10/sound/arm/vc_vchi_audioserv_defs.h linux-rpi/sound/arm/vc_vchi_audioserv_defs.h
--- linux-3.18.10/sound/arm/vc_vchi_audioserv_defs.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/arm/vc_vchi_audioserv_defs.h	2015-03-26 11:47:02.440245724 +0100
@@ -0,0 +1,116 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation.  All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#ifndef _VC_AUDIO_DEFS_H_
+#define _VC_AUDIO_DEFS_H_
+
+#define VC_AUDIOSERV_MIN_VER 1
+#define VC_AUDIOSERV_VER 2
+
+// FourCC code used for VCHI connection
+#define VC_AUDIO_SERVER_NAME  MAKE_FOURCC("AUDS")
+
+// Maximum message length
+#define VC_AUDIO_MAX_MSG_LEN  (sizeof( VC_AUDIO_MSG_T ))
+
+// List of screens that are currently supported
+// All message types supported for HOST->VC direction
+typedef enum {
+	VC_AUDIO_MSG_TYPE_RESULT,	// Generic result
+	VC_AUDIO_MSG_TYPE_COMPLETE,	// Generic result
+	VC_AUDIO_MSG_TYPE_CONFIG,	// Configure audio
+	VC_AUDIO_MSG_TYPE_CONTROL,	// Configure audio
+	VC_AUDIO_MSG_TYPE_OPEN,	// Configure audio
+	VC_AUDIO_MSG_TYPE_CLOSE,	// Configure audio
+	VC_AUDIO_MSG_TYPE_START,	// Configure audio
+	VC_AUDIO_MSG_TYPE_STOP,	// Configure audio
+	VC_AUDIO_MSG_TYPE_WRITE,	// Configure audio
+	VC_AUDIO_MSG_TYPE_MAX
+} VC_AUDIO_MSG_TYPE;
+
+// configure the audio
+typedef struct {
+	uint32_t channels;
+	uint32_t samplerate;
+	uint32_t bps;
+
+} VC_AUDIO_CONFIG_T;
+
+typedef struct {
+	uint32_t volume;
+	uint32_t dest;
+
+} VC_AUDIO_CONTROL_T;
+
+// audio
+typedef struct {
+	uint32_t dummy;
+
+} VC_AUDIO_OPEN_T;
+
+// audio
+typedef struct {
+	uint32_t dummy;
+
+} VC_AUDIO_CLOSE_T;
+// audio
+typedef struct {
+	uint32_t dummy;
+
+} VC_AUDIO_START_T;
+// audio
+typedef struct {
+	uint32_t draining;
+
+} VC_AUDIO_STOP_T;
+
+// configure the write audio samples
+typedef struct {
+	uint32_t count;		// in bytes
+	void *callback;
+	void *cookie;
+	uint16_t silence;
+	uint16_t max_packet;
+} VC_AUDIO_WRITE_T;
+
+// Generic result for a request (VC->HOST)
+typedef struct {
+	int32_t success;	// Success value
+
+} VC_AUDIO_RESULT_T;
+
+// Generic result for a request (VC->HOST)
+typedef struct {
+	int32_t count;		// Success value
+	void *callback;
+	void *cookie;
+} VC_AUDIO_COMPLETE_T;
+
+// Message header for all messages in HOST->VC direction
+typedef struct {
+	int32_t type;		// Message type (VC_AUDIO_MSG_TYPE)
+	union {
+		VC_AUDIO_CONFIG_T config;
+		VC_AUDIO_CONTROL_T control;
+		VC_AUDIO_OPEN_T open;
+		VC_AUDIO_CLOSE_T close;
+		VC_AUDIO_START_T start;
+		VC_AUDIO_STOP_T stop;
+		VC_AUDIO_WRITE_T write;
+		VC_AUDIO_RESULT_T result;
+		VC_AUDIO_COMPLETE_T complete;
+	} u;
+} VC_AUDIO_MSG_T;
+
+#endif // _VC_AUDIO_DEFS_H_
diff -Nur linux-3.18.10/sound/soc/bcm/bcm2708-i2s.c linux-rpi/sound/soc/bcm/bcm2708-i2s.c
--- linux-3.18.10/sound/soc/bcm/bcm2708-i2s.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/bcm/bcm2708-i2s.c	2015-03-26 11:47:03.340246554 +0100
@@ -0,0 +1,1009 @@
+/*
+ * ALSA SoC I2S Audio Layer for Broadcom BCM2708 SoC
+ *
+ * Author:	Florian Meier <florian.meier@koalo.de>
+ *		Copyright 2013
+ *
+ * Based on
+ *	Raspberry Pi PCM I2S ALSA Driver
+ *	Copyright (c) by Phil Poole 2013
+ *
+ *	ALSA SoC I2S (McBSP) Audio Layer for TI DAVINCI processor
+ *      Vladimir Barinov, <vbarinov@embeddedalley.com>
+ *	Copyright (C) 2007 MontaVista Software, Inc., <source@mvista.com>
+ *
+ *	OMAP ALSA SoC DAI driver using McBSP port
+ *	Copyright (C) 2008 Nokia Corporation
+ *	Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
+ *		 Peter Ujfalusi <peter.ujfalusi@ti.com>
+ *
+ *	Freescale SSI ALSA SoC Digital Audio Interface (DAI) driver
+ *	Author: Timur Tabi <timur@freescale.com>
+ *	Copyright 2007-2010 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include "bcm2708-i2s.h"
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <mach/gpio.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+#include <sound/dmaengine_pcm.h>
+
+#include <asm/system_info.h>
+
+/* Clock registers */
+#define BCM2708_CLK_PCMCTL_REG  0x00
+#define BCM2708_CLK_PCMDIV_REG  0x04
+
+/* Clock register settings */
+#define BCM2708_CLK_PASSWD		(0x5a000000)
+#define BCM2708_CLK_PASSWD_MASK	(0xff000000)
+#define BCM2708_CLK_MASH(v)		((v) << 9)
+#define BCM2708_CLK_FLIP		BIT(8)
+#define BCM2708_CLK_BUSY		BIT(7)
+#define BCM2708_CLK_KILL		BIT(5)
+#define BCM2708_CLK_ENAB		BIT(4)
+#define BCM2708_CLK_SRC(v)		(v)
+
+#define BCM2708_CLK_SHIFT		(12)
+#define BCM2708_CLK_DIVI(v)		((v) << BCM2708_CLK_SHIFT)
+#define BCM2708_CLK_DIVF(v)		(v)
+#define BCM2708_CLK_DIVF_MASK		(0xFFF)
+
+enum {
+	BCM2708_CLK_MASH_0 = 0,
+	BCM2708_CLK_MASH_1,
+	BCM2708_CLK_MASH_2,
+	BCM2708_CLK_MASH_3,
+};
+
+enum {
+	BCM2708_CLK_SRC_GND = 0,
+	BCM2708_CLK_SRC_OSC,
+	BCM2708_CLK_SRC_DBG0,
+	BCM2708_CLK_SRC_DBG1,
+	BCM2708_CLK_SRC_PLLA,
+	BCM2708_CLK_SRC_PLLC,
+	BCM2708_CLK_SRC_PLLD,
+	BCM2708_CLK_SRC_HDMI,
+};
+
+/* Most clocks are not useable (freq = 0) */
+static const unsigned int bcm2708_clk_freq[BCM2708_CLK_SRC_HDMI+1] = {
+	[BCM2708_CLK_SRC_GND]		= 0,
+	[BCM2708_CLK_SRC_OSC]		= 19200000,
+	[BCM2708_CLK_SRC_DBG0]		= 0,
+	[BCM2708_CLK_SRC_DBG1]		= 0,
+	[BCM2708_CLK_SRC_PLLA]		= 0,
+	[BCM2708_CLK_SRC_PLLC]		= 0,
+	[BCM2708_CLK_SRC_PLLD]		= 500000000,
+	[BCM2708_CLK_SRC_HDMI]		= 0,
+};
+
+/* I2S registers */
+#define BCM2708_I2S_CS_A_REG		0x00
+#define BCM2708_I2S_FIFO_A_REG		0x04
+#define BCM2708_I2S_MODE_A_REG		0x08
+#define BCM2708_I2S_RXC_A_REG		0x0c
+#define BCM2708_I2S_TXC_A_REG		0x10
+#define BCM2708_I2S_DREQ_A_REG		0x14
+#define BCM2708_I2S_INTEN_A_REG	0x18
+#define BCM2708_I2S_INTSTC_A_REG	0x1c
+#define BCM2708_I2S_GRAY_REG		0x20
+
+/* I2S register settings */
+#define BCM2708_I2S_STBY		BIT(25)
+#define BCM2708_I2S_SYNC		BIT(24)
+#define BCM2708_I2S_RXSEX		BIT(23)
+#define BCM2708_I2S_RXF		BIT(22)
+#define BCM2708_I2S_TXE		BIT(21)
+#define BCM2708_I2S_RXD		BIT(20)
+#define BCM2708_I2S_TXD		BIT(19)
+#define BCM2708_I2S_RXR		BIT(18)
+#define BCM2708_I2S_TXW		BIT(17)
+#define BCM2708_I2S_CS_RXERR		BIT(16)
+#define BCM2708_I2S_CS_TXERR		BIT(15)
+#define BCM2708_I2S_RXSYNC		BIT(14)
+#define BCM2708_I2S_TXSYNC		BIT(13)
+#define BCM2708_I2S_DMAEN		BIT(9)
+#define BCM2708_I2S_RXTHR(v)		((v) << 7)
+#define BCM2708_I2S_TXTHR(v)		((v) << 5)
+#define BCM2708_I2S_RXCLR		BIT(4)
+#define BCM2708_I2S_TXCLR		BIT(3)
+#define BCM2708_I2S_TXON		BIT(2)
+#define BCM2708_I2S_RXON		BIT(1)
+#define BCM2708_I2S_EN			(1)
+
+#define BCM2708_I2S_CLKDIS		BIT(28)
+#define BCM2708_I2S_PDMN		BIT(27)
+#define BCM2708_I2S_PDME		BIT(26)
+#define BCM2708_I2S_FRXP		BIT(25)
+#define BCM2708_I2S_FTXP		BIT(24)
+#define BCM2708_I2S_CLKM		BIT(23)
+#define BCM2708_I2S_CLKI		BIT(22)
+#define BCM2708_I2S_FSM		BIT(21)
+#define BCM2708_I2S_FSI		BIT(20)
+#define BCM2708_I2S_FLEN(v)		((v) << 10)
+#define BCM2708_I2S_FSLEN(v)		(v)
+
+#define BCM2708_I2S_CHWEX		BIT(15)
+#define BCM2708_I2S_CHEN		BIT(14)
+#define BCM2708_I2S_CHPOS(v)		((v) << 4)
+#define BCM2708_I2S_CHWID(v)		(v)
+#define BCM2708_I2S_CH1(v)		((v) << 16)
+#define BCM2708_I2S_CH2(v)		(v)
+
+#define BCM2708_I2S_TX_PANIC(v)	((v) << 24)
+#define BCM2708_I2S_RX_PANIC(v)	((v) << 16)
+#define BCM2708_I2S_TX(v)		((v) << 8)
+#define BCM2708_I2S_RX(v)		(v)
+
+#define BCM2708_I2S_INT_RXERR		BIT(3)
+#define BCM2708_I2S_INT_TXERR		BIT(2)
+#define BCM2708_I2S_INT_RXR		BIT(1)
+#define BCM2708_I2S_INT_TXW		BIT(0)
+
+/* I2S DMA interface */
+#define BCM2708_I2S_FIFO_PHYSICAL_ADDR	0x7E203004
+#define BCM2708_DMA_DREQ_PCM_TX		2
+#define BCM2708_DMA_DREQ_PCM_RX		3
+
+/* I2S pin configuration */
+static int bcm2708_i2s_gpio=BCM2708_I2S_GPIO_AUTO;
+
+/* General device struct */
+struct bcm2708_i2s_dev {
+	struct device				*dev;
+	struct snd_dmaengine_dai_dma_data	dma_data[2];
+	unsigned int				fmt;
+	unsigned int				bclk_ratio;
+
+	struct regmap *i2s_regmap;
+	struct regmap *clk_regmap;
+};
+
+void bcm2708_i2s_set_gpio(int gpio) {
+	bcm2708_i2s_gpio=gpio;
+}
+EXPORT_SYMBOL(bcm2708_i2s_set_gpio);
+
+
+static void bcm2708_i2s_start_clock(struct bcm2708_i2s_dev *dev)
+{
+	/* Start the clock if in master mode */
+	unsigned int master = dev->fmt & SND_SOC_DAIFMT_MASTER_MASK;
+
+	switch (master) {
+	case SND_SOC_DAIFMT_CBS_CFS:
+	case SND_SOC_DAIFMT_CBS_CFM:
+		regmap_update_bits(dev->clk_regmap, BCM2708_CLK_PCMCTL_REG,
+			BCM2708_CLK_PASSWD_MASK | BCM2708_CLK_ENAB,
+			BCM2708_CLK_PASSWD | BCM2708_CLK_ENAB);
+		break;
+	default:
+		break;
+	}
+}
+
+static void bcm2708_i2s_stop_clock(struct bcm2708_i2s_dev *dev)
+{
+	uint32_t clkreg;
+	int timeout = 1000;
+
+	/* Stop clock */
+	regmap_update_bits(dev->clk_regmap, BCM2708_CLK_PCMCTL_REG,
+			BCM2708_CLK_PASSWD_MASK | BCM2708_CLK_ENAB,
+			BCM2708_CLK_PASSWD);
+
+	/* Wait for the BUSY flag going down */
+	while (--timeout) {
+		regmap_read(dev->clk_regmap, BCM2708_CLK_PCMCTL_REG, &clkreg);
+		if (!(clkreg & BCM2708_CLK_BUSY))
+			break;
+	}
+
+	if (!timeout) {
+		/* KILL the clock */
+		dev_err(dev->dev, "I2S clock didn't stop. Kill the clock!\n");
+		regmap_update_bits(dev->clk_regmap, BCM2708_CLK_PCMCTL_REG,
+			BCM2708_CLK_KILL | BCM2708_CLK_PASSWD_MASK,
+			BCM2708_CLK_KILL | BCM2708_CLK_PASSWD);
+	}
+}
+
+static void bcm2708_i2s_clear_fifos(struct bcm2708_i2s_dev *dev,
+				    bool tx, bool rx)
+{
+	int timeout = 1000;
+	uint32_t syncval;
+	uint32_t csreg;
+	uint32_t i2s_active_state;
+	uint32_t clkreg;
+	uint32_t clk_active_state;
+	uint32_t off;
+	uint32_t clr;
+
+	off =  tx ? BCM2708_I2S_TXON : 0;
+	off |= rx ? BCM2708_I2S_RXON : 0;
+
+	clr =  tx ? BCM2708_I2S_TXCLR : 0;
+	clr |= rx ? BCM2708_I2S_RXCLR : 0;
+
+	/* Backup the current state */
+	regmap_read(dev->i2s_regmap, BCM2708_I2S_CS_A_REG, &csreg);
+	i2s_active_state = csreg & (BCM2708_I2S_RXON | BCM2708_I2S_TXON);
+
+	regmap_read(dev->clk_regmap, BCM2708_CLK_PCMCTL_REG, &clkreg);
+	clk_active_state = clkreg & BCM2708_CLK_ENAB;
+
+	/* Start clock if not running */
+	if (!clk_active_state) {
+		regmap_update_bits(dev->clk_regmap, BCM2708_CLK_PCMCTL_REG,
+			BCM2708_CLK_PASSWD_MASK | BCM2708_CLK_ENAB,
+			BCM2708_CLK_PASSWD | BCM2708_CLK_ENAB);
+	}
+
+	/* Stop I2S module */
+	regmap_update_bits(dev->i2s_regmap, BCM2708_I2S_CS_A_REG, off, 0);
+
+	/*
+	 * Clear the FIFOs
+	 * Requires at least 2 PCM clock cycles to take effect
+	 */
+	regmap_update_bits(dev->i2s_regmap, BCM2708_I2S_CS_A_REG, clr, clr);
+
+	/* Wait for 2 PCM clock cycles */
+
+	/*
+	 * Toggle the SYNC flag. After 2 PCM clock cycles it can be read back
+	 * FIXME: This does not seem to work for slave mode!
+	 */
+	regmap_read(dev->i2s_regmap, BCM2708_I2S_CS_A_REG, &syncval);
+	syncval &= BCM2708_I2S_SYNC;
+
+	regmap_update_bits(dev->i2s_regmap, BCM2708_I2S_CS_A_REG,
+			BCM2708_I2S_SYNC, ~syncval);
+
+	/* Wait for the SYNC flag changing it's state */
+	while (--timeout) {
+		regmap_read(dev->i2s_regmap, BCM2708_I2S_CS_A_REG, &csreg);
+		if ((csreg & BCM2708_I2S_SYNC) != syncval)
+			break;
+	}
+
+	if (!timeout)
+		dev_err(dev->dev, "I2S SYNC error!\n");
+
+	/* Stop clock if it was not running before */
+	if (!clk_active_state)
+		bcm2708_i2s_stop_clock(dev);
+
+	/* Restore I2S state */
+	regmap_update_bits(dev->i2s_regmap, BCM2708_I2S_CS_A_REG,
+			BCM2708_I2S_RXON | BCM2708_I2S_TXON, i2s_active_state);
+}
+
+static int bcm2708_i2s_set_dai_fmt(struct snd_soc_dai *dai,
+				      unsigned int fmt)
+{
+	struct bcm2708_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
+	dev->fmt = fmt;
+	return 0;
+}
+
+static int bcm2708_i2s_set_dai_bclk_ratio(struct snd_soc_dai *dai,
+				      unsigned int ratio)
+{
+	struct bcm2708_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
+	dev->bclk_ratio = ratio;
+	return 0;
+}
+
+
+static int bcm2708_i2s_set_function(unsigned offset, int function)
+{
+	#define GPIOFSEL(x)  (0x00+(x)*4)
+	void __iomem *gpio = __io_address(GPIO_BASE);
+	unsigned alt = function <= 3 ? function + 4: function == 4 ? 3 : 2;
+	unsigned gpiodir;
+	unsigned gpio_bank = offset / 10;
+	unsigned gpio_field_offset = (offset - 10 * gpio_bank) * 3;
+
+	if (offset >= BCM2708_NR_GPIOS)
+		return -EINVAL;
+
+	gpiodir = readl(gpio + GPIOFSEL(gpio_bank));
+	gpiodir &= ~(7 << gpio_field_offset);
+	gpiodir |= alt << gpio_field_offset;
+	writel(gpiodir, gpio + GPIOFSEL(gpio_bank));
+	return 0;
+}
+
+static void bcm2708_i2s_setup_gpio(void)
+{
+	/*
+	 * This is the common way to handle the GPIO pins for
+	 * the Raspberry Pi.
+	 * TODO Better way would be to handle
+	 * this in the device tree!
+	 */
+	int pin,pinconfig,startpin,alt;
+
+	/* SPI is on different GPIOs on different boards */
+        /* for Raspberry Pi B+, this is pin GPIO18-21, for original on 28-31 */
+	if (bcm2708_i2s_gpio==BCM2708_I2S_GPIO_AUTO) {	
+		if ((system_rev & 0xffffff) >= 0x10) {
+			/* Model B+ */
+			pinconfig=BCM2708_I2S_GPIO_PIN18;
+		} else {
+			/* original */
+			pinconfig=BCM2708_I2S_GPIO_PIN28;
+		}
+	} else {
+		pinconfig=bcm2708_i2s_gpio;
+	}
+
+	if (pinconfig==BCM2708_I2S_GPIO_PIN18) {
+		startpin=18;
+		alt=BCM2708_I2S_GPIO_PIN18_ALT;
+	} else if (pinconfig==BCM2708_I2S_GPIO_PIN28) {
+		startpin=28;
+		alt=BCM2708_I2S_GPIO_PIN28_ALT;
+	} else {
+		printk(KERN_INFO "Can't configure I2S GPIOs, unknown pin mode for I2S: %i\n",pinconfig);
+		return;
+	}	
+
+	/* configure I2S pins to correct ALT mode */
+	for (pin = startpin; pin <= startpin+3; pin++) {
+		bcm2708_i2s_set_function(pin, alt);
+	}
+}
+
+static int bcm2708_i2s_hw_params(struct snd_pcm_substream *substream,
+				 struct snd_pcm_hw_params *params,
+				 struct snd_soc_dai *dai)
+{
+	struct bcm2708_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
+
+	unsigned int sampling_rate = params_rate(params);
+	unsigned int data_length, data_delay, bclk_ratio;
+	unsigned int ch1pos, ch2pos, mode, format;
+	unsigned int mash = BCM2708_CLK_MASH_1;
+	unsigned int divi, divf, target_frequency;
+	int clk_src = -1;
+	unsigned int master = dev->fmt & SND_SOC_DAIFMT_MASTER_MASK;
+	bool bit_master =	(master == SND_SOC_DAIFMT_CBS_CFS
+					|| master == SND_SOC_DAIFMT_CBS_CFM);
+
+	bool frame_master =	(master == SND_SOC_DAIFMT_CBS_CFS
+					|| master == SND_SOC_DAIFMT_CBM_CFS);
+	uint32_t csreg;
+
+	/*
+	 * If a stream is already enabled,
+	 * the registers are already set properly.
+	 */
+	regmap_read(dev->i2s_regmap, BCM2708_I2S_CS_A_REG, &csreg);
+
+	if (csreg & (BCM2708_I2S_TXON | BCM2708_I2S_RXON))
+		return 0;
+
+
+	bcm2708_i2s_setup_gpio();
+
+	/*
+	 * Adjust the data length according to the format.
+	 * We prefill the half frame length with an integer
+	 * divider of 2400 as explained at the clock settings.
+	 * Maybe it is overwritten there, if the Integer mode
+	 * does not apply.
+	 */
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		data_length = 16;
+		bclk_ratio = 50;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		data_length = 24;
+		bclk_ratio = 50;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		data_length = 32;
+		bclk_ratio = 100;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* If bclk_ratio already set, use that one. */
+	if (dev->bclk_ratio)
+		bclk_ratio = dev->bclk_ratio;
+
+	/*
+	 * Clock Settings
+	 *
+	 * The target frequency of the bit clock is
+	 *	sampling rate * frame length
+	 *
+	 * Integer mode:
+	 * Sampling rates that are multiples of 8000 kHz
+	 * can be driven by the oscillator of 19.2 MHz
+	 * with an integer divider as long as the frame length
+	 * is an integer divider of 19200000/8000=2400 as set up above.
+	 * This is no longer possible if the sampling rate
+	 * is too high (e.g. 192 kHz), because the oscillator is too slow.
+	 *
+	 * MASH mode:
+	 * For all other sampling rates, it is not possible to
+	 * have an integer divider. Approximate the clock
+	 * with the MASH module that induces a slight frequency
+	 * variance. To minimize that it is best to have the fastest
+	 * clock here. That is PLLD with 500 MHz.
+	 */
+	target_frequency = sampling_rate * bclk_ratio;
+	clk_src = BCM2708_CLK_SRC_OSC;
+	mash = BCM2708_CLK_MASH_0;
+
+	if (bcm2708_clk_freq[clk_src] % target_frequency == 0
+			&& bit_master && frame_master) {
+		divi = bcm2708_clk_freq[clk_src] / target_frequency;
+		divf = 0;
+	} else {
+		uint64_t dividend;
+
+		if (!dev->bclk_ratio) {
+			/*
+			 * Overwrite bclk_ratio, because the
+			 * above trick is not needed or can
+			 * not be used.
+			 */
+			bclk_ratio = 2 * data_length;
+		}
+
+		target_frequency = sampling_rate * bclk_ratio;
+
+		clk_src = BCM2708_CLK_SRC_PLLD;
+		mash = BCM2708_CLK_MASH_1;
+
+		dividend = bcm2708_clk_freq[clk_src];
+		dividend <<= BCM2708_CLK_SHIFT;
+		do_div(dividend, target_frequency);
+		divi = dividend >> BCM2708_CLK_SHIFT;
+		divf = dividend & BCM2708_CLK_DIVF_MASK;
+	}
+
+	/* Clock should only be set up here if CPU is clock master */
+	if (((dev->fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBS_CFS) ||
+	    ((dev->fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBS_CFM)) {
+		/* Set clock divider */
+		regmap_write(dev->clk_regmap, BCM2708_CLK_PCMDIV_REG, BCM2708_CLK_PASSWD
+				| BCM2708_CLK_DIVI(divi)
+				| BCM2708_CLK_DIVF(divf));
+
+		/* Setup clock, but don't start it yet */
+		regmap_write(dev->clk_regmap, BCM2708_CLK_PCMCTL_REG, BCM2708_CLK_PASSWD
+				| BCM2708_CLK_MASH(mash)
+				| BCM2708_CLK_SRC(clk_src));
+	}
+
+	/* Setup the frame format */
+	format = BCM2708_I2S_CHEN;
+
+	if (data_length >= 24)
+		format |= BCM2708_I2S_CHWEX;
+
+	format |= BCM2708_I2S_CHWID((data_length-8)&0xf);
+
+	switch (dev->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		data_delay = 1;
+		break;
+	default:
+		/*
+		 * TODO
+		 * Others are possible but are not implemented at the moment.
+		 */
+		dev_err(dev->dev, "%s:bad format\n", __func__);
+		return -EINVAL;
+	}
+
+	ch1pos = data_delay;
+	ch2pos = bclk_ratio / 2 + data_delay;
+
+	switch (params_channels(params)) {
+	case 2:
+		format = BCM2708_I2S_CH1(format) | BCM2708_I2S_CH2(format);
+		format |= BCM2708_I2S_CH1(BCM2708_I2S_CHPOS(ch1pos));
+		format |= BCM2708_I2S_CH2(BCM2708_I2S_CHPOS(ch2pos));
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/*
+	 * Set format for both streams.
+	 * We cannot set another frame length
+	 * (and therefore word length) anyway,
+	 * so the format will be the same.
+	 */
+	regmap_write(dev->i2s_regmap, BCM2708_I2S_RXC_A_REG, format);
+	regmap_write(dev->i2s_regmap, BCM2708_I2S_TXC_A_REG, format);
+
+	/* Setup the I2S mode */
+	mode = 0;
+
+	if (data_length <= 16) {
+		/*
+		 * Use frame packed mode (2 channels per 32 bit word)
+		 * We cannot set another frame length in the second stream
+		 * (and therefore word length) anyway,
+		 * so the format will be the same.
+		 */
+		mode |= BCM2708_I2S_FTXP | BCM2708_I2S_FRXP;
+	}
+
+	mode |= BCM2708_I2S_FLEN(bclk_ratio - 1);
+	mode |= BCM2708_I2S_FSLEN(bclk_ratio / 2);
+
+	/* Master or slave? */
+	switch (dev->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBS_CFS:
+		/* CPU is master */
+		break;
+	case SND_SOC_DAIFMT_CBM_CFS:
+		/*
+		 * CODEC is bit clock master
+		 * CPU is frame master
+		 */
+		mode |= BCM2708_I2S_CLKM;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFM:
+		/*
+		 * CODEC is frame master
+		 * CPU is bit clock master
+		 */
+		mode |= BCM2708_I2S_FSM;
+		break;
+	case SND_SOC_DAIFMT_CBM_CFM:
+		/* CODEC is master */
+		mode |= BCM2708_I2S_CLKM;
+		mode |= BCM2708_I2S_FSM;
+		break;
+	default:
+		dev_err(dev->dev, "%s:bad master\n", __func__);
+		return -EINVAL;
+	}
+
+	/*
+	 * Invert clocks?
+	 *
+	 * The BCM approach seems to be inverted to the classical I2S approach.
+	 */
+	switch (dev->fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		/* None. Therefore, both for BCM */
+		mode |= BCM2708_I2S_CLKI;
+		mode |= BCM2708_I2S_FSI;
+		break;
+	case SND_SOC_DAIFMT_IB_IF:
+		/* Both. Therefore, none for BCM */
+		break;
+	case SND_SOC_DAIFMT_NB_IF:
+		/*
+		 * Invert only frame sync. Therefore,
+		 * invert only bit clock for BCM
+		 */
+		mode |= BCM2708_I2S_CLKI;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		/*
+		 * Invert only bit clock. Therefore,
+		 * invert only frame sync for BCM
+		 */
+		mode |= BCM2708_I2S_FSI;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_write(dev->i2s_regmap, BCM2708_I2S_MODE_A_REG, mode);
+
+	/* Setup the DMA parameters */
+	regmap_update_bits(dev->i2s_regmap, BCM2708_I2S_CS_A_REG,
+			BCM2708_I2S_RXTHR(1)
+			| BCM2708_I2S_TXTHR(1)
+			| BCM2708_I2S_DMAEN, 0xffffffff);
+
+	regmap_update_bits(dev->i2s_regmap, BCM2708_I2S_DREQ_A_REG,
+			  BCM2708_I2S_TX_PANIC(0x10)
+			| BCM2708_I2S_RX_PANIC(0x30)
+			| BCM2708_I2S_TX(0x30)
+			| BCM2708_I2S_RX(0x20), 0xffffffff);
+
+	/* Clear FIFOs */
+	bcm2708_i2s_clear_fifos(dev, true, true);
+
+	return 0;
+}
+
+static int bcm2708_i2s_prepare(struct snd_pcm_substream *substream,
+		struct snd_soc_dai *dai)
+{
+	struct bcm2708_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
+	uint32_t cs_reg;
+
+	bcm2708_i2s_start_clock(dev);
+
+	/*
+	 * Clear both FIFOs if the one that should be started
+	 * is not empty at the moment. This should only happen
+	 * after overrun. Otherwise, hw_params would have cleared
+	 * the FIFO.
+	 */
+	regmap_read(dev->i2s_regmap, BCM2708_I2S_CS_A_REG, &cs_reg);
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK
+			&& !(cs_reg & BCM2708_I2S_TXE))
+		bcm2708_i2s_clear_fifos(dev, true, false);
+	else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE
+			&& (cs_reg & BCM2708_I2S_RXD))
+		bcm2708_i2s_clear_fifos(dev, false, true);
+
+	return 0;
+}
+
+static void bcm2708_i2s_stop(struct bcm2708_i2s_dev *dev,
+		struct snd_pcm_substream *substream,
+		struct snd_soc_dai *dai)
+{
+	uint32_t mask;
+
+	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+		mask = BCM2708_I2S_RXON;
+	else
+		mask = BCM2708_I2S_TXON;
+
+	regmap_update_bits(dev->i2s_regmap,
+			BCM2708_I2S_CS_A_REG, mask, 0);
+
+	/* Stop also the clock when not SND_SOC_DAIFMT_CONT */
+	if (!dai->active && !(dev->fmt & SND_SOC_DAIFMT_CONT))
+		bcm2708_i2s_stop_clock(dev);
+}
+
+static int bcm2708_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+			       struct snd_soc_dai *dai)
+{
+	struct bcm2708_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
+	uint32_t mask;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		bcm2708_i2s_start_clock(dev);
+
+		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+			mask = BCM2708_I2S_RXON;
+		else
+			mask = BCM2708_I2S_TXON;
+
+		regmap_update_bits(dev->i2s_regmap,
+				BCM2708_I2S_CS_A_REG, mask, mask);
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		bcm2708_i2s_stop(dev, substream, dai);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int bcm2708_i2s_startup(struct snd_pcm_substream *substream,
+			       struct snd_soc_dai *dai)
+{
+	struct bcm2708_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
+
+	if (dai->active)
+		return 0;
+
+	/* Should this still be running stop it */
+	bcm2708_i2s_stop_clock(dev);
+
+	/* Enable PCM block */
+	regmap_update_bits(dev->i2s_regmap, BCM2708_I2S_CS_A_REG,
+			BCM2708_I2S_EN, BCM2708_I2S_EN);
+
+	/*
+	 * Disable STBY.
+	 * Requires at least 4 PCM clock cycles to take effect.
+	 */
+	regmap_update_bits(dev->i2s_regmap, BCM2708_I2S_CS_A_REG,
+			BCM2708_I2S_STBY, BCM2708_I2S_STBY);
+
+	return 0;
+}
+
+static void bcm2708_i2s_shutdown(struct snd_pcm_substream *substream,
+		struct snd_soc_dai *dai)
+{
+	struct bcm2708_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
+
+	bcm2708_i2s_stop(dev, substream, dai);
+
+	/* If both streams are stopped, disable module and clock */
+	if (dai->active)
+		return;
+
+	/* Disable the module */
+	regmap_update_bits(dev->i2s_regmap, BCM2708_I2S_CS_A_REG,
+			BCM2708_I2S_EN, 0);
+
+	/*
+	 * Stopping clock is necessary, because stop does
+	 * not stop the clock when SND_SOC_DAIFMT_CONT
+	 */
+	bcm2708_i2s_stop_clock(dev);
+}
+
+static const struct snd_soc_dai_ops bcm2708_i2s_dai_ops = {
+	.startup	= bcm2708_i2s_startup,
+	.shutdown	= bcm2708_i2s_shutdown,
+	.prepare	= bcm2708_i2s_prepare,
+	.trigger	= bcm2708_i2s_trigger,
+	.hw_params	= bcm2708_i2s_hw_params,
+	.set_fmt	= bcm2708_i2s_set_dai_fmt,
+	.set_bclk_ratio	= bcm2708_i2s_set_dai_bclk_ratio
+};
+
+static int bcm2708_i2s_dai_probe(struct snd_soc_dai *dai)
+{
+	struct bcm2708_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
+
+	dai->playback_dma_data = &dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK];
+	dai->capture_dma_data = &dev->dma_data[SNDRV_PCM_STREAM_CAPTURE];
+
+	return 0;
+}
+
+static struct snd_soc_dai_driver bcm2708_i2s_dai = {
+	.name	= "bcm2708-i2s",
+	.probe	= bcm2708_i2s_dai_probe,
+	.playback = {
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates =	SNDRV_PCM_RATE_8000_192000,
+		.formats =	SNDRV_PCM_FMTBIT_S16_LE
+				| SNDRV_PCM_FMTBIT_S24_LE
+				| SNDRV_PCM_FMTBIT_S32_LE
+		},
+	.capture = {
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates =	SNDRV_PCM_RATE_8000_192000,
+		.formats =	SNDRV_PCM_FMTBIT_S16_LE
+				| SNDRV_PCM_FMTBIT_S24_LE
+				| SNDRV_PCM_FMTBIT_S32_LE
+		},
+	.ops = &bcm2708_i2s_dai_ops,
+	.symmetric_rates = 1
+};
+
+static bool bcm2708_i2s_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case BCM2708_I2S_CS_A_REG:
+	case BCM2708_I2S_FIFO_A_REG:
+	case BCM2708_I2S_INTSTC_A_REG:
+	case BCM2708_I2S_GRAY_REG:
+		return true;
+	default:
+		return false;
+	};
+}
+
+static bool bcm2708_i2s_precious_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case BCM2708_I2S_FIFO_A_REG:
+		return true;
+	default:
+		return false;
+	};
+}
+
+static bool bcm2708_clk_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case BCM2708_CLK_PCMCTL_REG:
+		return true;
+	default:
+		return false;
+	};
+}
+
+static const struct regmap_config bcm2708_regmap_config[] = {
+	{
+		.reg_bits = 32,
+		.reg_stride = 4,
+		.val_bits = 32,
+		.max_register = BCM2708_I2S_GRAY_REG,
+		.precious_reg = bcm2708_i2s_precious_reg,
+		.volatile_reg = bcm2708_i2s_volatile_reg,
+		.cache_type = REGCACHE_RBTREE,
+		.name = "i2s",
+	},
+	{
+		.reg_bits = 32,
+		.reg_stride = 4,
+		.val_bits = 32,
+		.max_register = BCM2708_CLK_PCMDIV_REG,
+		.volatile_reg = bcm2708_clk_volatile_reg,
+		.cache_type = REGCACHE_RBTREE,
+		.name = "clk",
+	},
+};
+
+static const struct snd_soc_component_driver bcm2708_i2s_component = {
+	.name		= "bcm2708-i2s-comp",
+};
+
+static const struct snd_pcm_hardware bcm2708_pcm_hardware = {
+	.info			= SNDRV_PCM_INFO_INTERLEAVED |
+				  SNDRV_PCM_INFO_JOINT_DUPLEX,
+	.formats		= SNDRV_PCM_FMTBIT_S16_LE |
+				  SNDRV_PCM_FMTBIT_S24_LE |
+				  SNDRV_PCM_FMTBIT_S32_LE,
+	.period_bytes_min	= 32,
+	.period_bytes_max	= 64 * PAGE_SIZE,
+	.periods_min		= 2,
+	.periods_max		= 255,
+	.buffer_bytes_max	= 128 * PAGE_SIZE,
+};
+
+static const struct snd_dmaengine_pcm_config bcm2708_dmaengine_pcm_config = {
+	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
+	.pcm_hardware = &bcm2708_pcm_hardware,
+	.prealloc_buffer_size = 256 * PAGE_SIZE,
+};
+
+
+static int bcm2708_i2s_probe(struct platform_device *pdev)
+{
+	struct bcm2708_i2s_dev *dev;
+	int i;
+	int ret;
+	struct regmap *regmap[2];
+	struct resource *mem[2];
+
+	/* Request both ioareas */
+	for (i = 0; i <= 1; i++) {
+		void __iomem *base;
+
+		mem[i] = platform_get_resource(pdev, IORESOURCE_MEM, i);
+		base = devm_ioremap_resource(&pdev->dev, mem[i]);
+		if (IS_ERR(base))
+			return PTR_ERR(base);
+
+		regmap[i] = devm_regmap_init_mmio(&pdev->dev, base,
+					    &bcm2708_regmap_config[i]);
+		if (IS_ERR(regmap[i])) {
+			dev_err(&pdev->dev, "I2S probe: regmap init failed\n");
+			return PTR_ERR(regmap[i]);
+		}
+	}
+
+	dev = devm_kzalloc(&pdev->dev, sizeof(*dev),
+			   GFP_KERNEL);
+	if (IS_ERR(dev))
+		return PTR_ERR(dev);
+
+	dev->i2s_regmap = regmap[0];
+	dev->clk_regmap = regmap[1];
+
+	/* Set the DMA address */
+	dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr =
+		(dma_addr_t)BCM2708_I2S_FIFO_PHYSICAL_ADDR;
+
+	dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].addr =
+		(dma_addr_t)BCM2708_I2S_FIFO_PHYSICAL_ADDR;
+
+	/* Set the DREQ */
+	dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].slave_id =
+		BCM2708_DMA_DREQ_PCM_TX;
+	dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].slave_id =
+		BCM2708_DMA_DREQ_PCM_RX;
+
+	/* Set the bus width */
+	dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr_width =
+		DMA_SLAVE_BUSWIDTH_4_BYTES;
+	dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].addr_width =
+		DMA_SLAVE_BUSWIDTH_4_BYTES;
+
+	/* Set burst */
+	dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].maxburst = 2;
+	dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].maxburst = 2;
+
+	/* BCLK ratio - use default */
+	dev->bclk_ratio = 0;
+
+	/* Store the pdev */
+	dev->dev = &pdev->dev;
+	dev_set_drvdata(&pdev->dev, dev);
+
+	ret = snd_soc_register_component(&pdev->dev,
+			&bcm2708_i2s_component, &bcm2708_i2s_dai, 1);
+
+	if (ret) {
+		dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
+		ret = -ENOMEM;
+		return ret;
+	}
+
+	ret = snd_dmaengine_pcm_register(&pdev->dev,
+				&bcm2708_dmaengine_pcm_config,
+				SND_DMAENGINE_PCM_FLAG_COMPAT);
+	if (ret) {
+		dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
+		snd_soc_unregister_component(&pdev->dev);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int bcm2708_i2s_remove(struct platform_device *pdev)
+{
+	snd_dmaengine_pcm_unregister(&pdev->dev);
+	snd_soc_unregister_component(&pdev->dev);
+	return 0;
+}
+
+static const struct of_device_id bcm2708_i2s_of_match[] = {
+	{ .compatible = "brcm,bcm2708-i2s", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, bcm2708_i2s_of_match);
+
+static struct platform_driver bcm2708_i2s_driver = {
+	.probe		= bcm2708_i2s_probe,
+	.remove		= bcm2708_i2s_remove,
+	.driver		= {
+		.name	= "bcm2708-i2s",
+		.owner	= THIS_MODULE,
+		.of_match_table = bcm2708_i2s_of_match,
+	},
+};
+
+module_platform_driver(bcm2708_i2s_driver);
+
+MODULE_ALIAS("platform:bcm2708-i2s");
+MODULE_DESCRIPTION("BCM2708 I2S interface");
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/bcm/bcm2708-i2s.h linux-rpi/sound/soc/bcm/bcm2708-i2s.h
--- linux-3.18.10/sound/soc/bcm/bcm2708-i2s.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/bcm/bcm2708-i2s.h	2015-03-26 11:47:03.340246554 +0100
@@ -0,0 +1,35 @@
+/*
+ * I2S configuration for sound cards. 
+ *
+ * Copyright (c) 2014 Daniel Matuschek <daniel@hifiberry.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef BCM2708_I2S_H
+#define BCM2708_I2S_H
+
+/* I2S pin assignment */
+#define BCM2708_I2S_GPIO_AUTO	0
+#define BCM2708_I2S_GPIO_PIN18	1
+#define BCM2708_I2S_GPIO_PIN28	2
+
+/* Alt mode to enable I2S */
+#define BCM2708_I2S_GPIO_PIN18_ALT	0
+#define BCM2708_I2S_GPIO_PIN28_ALT	2
+
+extern void bcm2708_i2s_set_gpio(int gpio);
+
+#endif
diff -Nur linux-3.18.10/sound/soc/bcm/bcm2835-i2s.c linux-rpi/sound/soc/bcm/bcm2835-i2s.c
--- linux-3.18.10/sound/soc/bcm/bcm2835-i2s.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/sound/soc/bcm/bcm2835-i2s.c	2015-03-26 11:47:03.340246554 +0100
@@ -861,6 +861,7 @@
 	{ .compatible = "brcm,bcm2835-i2s", },
 	{},
 };
+MODULE_DEVICE_TABLE(of, bcm2835_i2s_of_match);
 
 static struct platform_driver bcm2835_i2s_driver = {
 	.probe		= bcm2835_i2s_probe,
diff -Nur linux-3.18.10/sound/soc/bcm/hifiberry_amp.c linux-rpi/sound/soc/bcm/hifiberry_amp.c
--- linux-3.18.10/sound/soc/bcm/hifiberry_amp.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/bcm/hifiberry_amp.c	2015-03-26 11:47:03.340246554 +0100
@@ -0,0 +1,127 @@
+/*
+ * ASoC Driver for HifiBerry AMP
+ *
+ * Author:	Sebastian Eickhoff <basti.eickhoff@googlemail.com>
+ *		Copyright 2014
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+static int snd_rpi_hifiberry_amp_init(struct snd_soc_pcm_runtime *rtd)
+{
+	// ToDo: init of the dsp-registers.
+	return 0;
+}
+
+static int snd_rpi_hifiberry_amp_hw_params( struct snd_pcm_substream *substream,
+				       struct snd_pcm_hw_params *params )
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+	return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+}
+
+static struct snd_soc_ops snd_rpi_hifiberry_amp_ops = {
+	.hw_params = snd_rpi_hifiberry_amp_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_hifiberry_amp_dai[] = {
+    {
+		.name			= "HifiBerry AMP",
+		.stream_name	= "HifiBerry AMP HiFi",
+		.cpu_dai_name	= "bcm2708-i2s.0",
+		.codec_dai_name	= "tas5713-hifi",
+		.platform_name	= "bcm2708-i2s.0",
+		.codec_name		= "tas5713.1-001b",
+		.dai_fmt		= SND_SOC_DAIFMT_I2S |
+						  SND_SOC_DAIFMT_NB_NF |
+						  SND_SOC_DAIFMT_CBS_CFS,
+		.ops			= &snd_rpi_hifiberry_amp_ops,
+		.init			= snd_rpi_hifiberry_amp_init,
+	},
+};
+
+
+static struct snd_soc_card snd_rpi_hifiberry_amp = {
+	.name         = "snd_rpi_hifiberry_amp",
+	.dai_link     = snd_rpi_hifiberry_amp_dai,
+	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_amp_dai),
+};
+
+static const struct of_device_id snd_rpi_hifiberry_amp_of_match[] = {
+        { .compatible = "hifiberry,hifiberry-amp", },
+        {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_amp_of_match);
+
+
+static int snd_rpi_hifiberry_amp_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	snd_rpi_hifiberry_amp.dev = &pdev->dev;
+
+        if (pdev->dev.of_node) {
+            struct device_node *i2s_node;
+            struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_amp_dai[0];
+            i2s_node = of_parse_phandle(pdev->dev.of_node,
+                                        "i2s-controller", 0);
+
+            if (i2s_node) {
+                dai->cpu_dai_name = NULL;
+                dai->cpu_of_node = i2s_node;
+                dai->platform_name = NULL;
+                dai->platform_of_node = i2s_node;
+            }
+        }
+
+	ret = snd_soc_register_card(&snd_rpi_hifiberry_amp);
+
+	if (ret != 0) {
+		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+	}
+
+	return ret;
+}
+
+
+static int snd_rpi_hifiberry_amp_remove(struct platform_device *pdev)
+{
+	return snd_soc_unregister_card(&snd_rpi_hifiberry_amp);
+}
+
+
+static struct platform_driver snd_rpi_hifiberry_amp_driver = {
+        .driver = {
+                .name   = "snd-hifiberry-amp",
+                .owner  = THIS_MODULE,
+		.of_match_table = snd_rpi_hifiberry_amp_of_match,
+        },
+        .probe          = snd_rpi_hifiberry_amp_probe,
+        .remove         = snd_rpi_hifiberry_amp_remove,
+};
+
+
+module_platform_driver(snd_rpi_hifiberry_amp_driver);
+
+
+MODULE_AUTHOR("Sebastian Eickhoff <basti.eickhoff@googlemail.com>");
+MODULE_DESCRIPTION("ASoC driver for HiFiBerry-AMP");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/bcm/hifiberry_dac.c linux-rpi/sound/soc/bcm/hifiberry_dac.c
--- linux-3.18.10/sound/soc/bcm/hifiberry_dac.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/bcm/hifiberry_dac.c	2015-03-26 11:47:03.340246554 +0100
@@ -0,0 +1,122 @@
+/*
+ * ASoC Driver for HifiBerry DAC
+ *
+ * Author:	Florian Meier <florian.meier@koalo.de>
+ *		Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+static int snd_rpi_hifiberry_dac_init(struct snd_soc_pcm_runtime *rtd)
+{
+	return 0;
+}
+
+static int snd_rpi_hifiberry_dac_hw_params(struct snd_pcm_substream *substream,
+				       struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+	unsigned int sample_bits =
+		snd_pcm_format_physical_width(params_format(params));
+
+	return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_hifiberry_dac_ops = {
+	.hw_params = snd_rpi_hifiberry_dac_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_hifiberry_dac_dai[] = {
+{
+	.name		= "HifiBerry DAC",
+	.stream_name	= "HifiBerry DAC HiFi",
+	.cpu_dai_name	= "bcm2708-i2s.0",
+	.codec_dai_name	= "pcm5102a-hifi",
+	.platform_name	= "bcm2708-i2s.0",
+	.codec_name	= "pcm5102a-codec",
+	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBS_CFS,
+	.ops		= &snd_rpi_hifiberry_dac_ops,
+	.init		= snd_rpi_hifiberry_dac_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_hifiberry_dac = {
+	.name         = "snd_rpi_hifiberry_dac",
+	.dai_link     = snd_rpi_hifiberry_dac_dai,
+	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dac_dai),
+};
+
+static int snd_rpi_hifiberry_dac_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	snd_rpi_hifiberry_dac.dev = &pdev->dev;
+
+	if (pdev->dev.of_node) {
+	    struct device_node *i2s_node;
+	    struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_dac_dai[0];
+	    i2s_node = of_parse_phandle(pdev->dev.of_node,
+					"i2s-controller", 0);
+
+	    if (i2s_node) {
+		dai->cpu_dai_name = NULL;
+		dai->cpu_of_node = i2s_node;
+		dai->platform_name = NULL;
+		dai->platform_of_node = i2s_node;
+	    }
+	}
+
+	ret = snd_soc_register_card(&snd_rpi_hifiberry_dac);
+	if (ret)
+		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+
+	return ret;
+}
+
+static int snd_rpi_hifiberry_dac_remove(struct platform_device *pdev)
+{
+	return snd_soc_unregister_card(&snd_rpi_hifiberry_dac);
+}
+
+static const struct of_device_id snd_rpi_hifiberry_dac_of_match[] = {
+	{ .compatible = "hifiberry,hifiberry-dac", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dac_of_match);
+
+static struct platform_driver snd_rpi_hifiberry_dac_driver = {
+        .driver = {
+                .name   = "snd-hifiberry-dac",
+                .owner  = THIS_MODULE,
+		.of_match_table = snd_rpi_hifiberry_dac_of_match,
+        },
+        .probe          = snd_rpi_hifiberry_dac_probe,
+        .remove         = snd_rpi_hifiberry_dac_remove,
+};
+
+module_platform_driver(snd_rpi_hifiberry_dac_driver);
+
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_DESCRIPTION("ASoC Driver for HifiBerry DAC");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/bcm/hifiberry_dacplus.c linux-rpi/sound/soc/bcm/hifiberry_dacplus.c
--- linux-3.18.10/sound/soc/bcm/hifiberry_dacplus.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/bcm/hifiberry_dacplus.c	2015-03-26 11:47:03.340246554 +0100
@@ -0,0 +1,141 @@
+/*
+ * ASoC Driver for HiFiBerry DAC+
+ *
+ * Author:	Daniel Matuschek
+ *		Copyright 2014
+ *		based on code by Florian Meier <florian.meier@koalo.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "../codecs/pcm512x.h"
+
+static int snd_rpi_hifiberry_dacplus_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_codec *codec = rtd->codec;
+	snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
+	snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
+	snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
+	return 0;
+}
+
+static int snd_rpi_hifiberry_dacplus_hw_params(struct snd_pcm_substream *substream,
+				       struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+}
+
+static int snd_rpi_hifiberry_dacplus_startup(struct snd_pcm_substream *substream) {
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_codec *codec = rtd->codec;
+	snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
+	return 0;
+}
+
+static void snd_rpi_hifiberry_dacplus_shutdown(struct snd_pcm_substream *substream) {
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_codec *codec = rtd->codec;
+	snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_hifiberry_dacplus_ops = {
+	.hw_params = snd_rpi_hifiberry_dacplus_hw_params,
+	.startup = snd_rpi_hifiberry_dacplus_startup,
+	.shutdown = snd_rpi_hifiberry_dacplus_shutdown,
+};
+
+static struct snd_soc_dai_link snd_rpi_hifiberry_dacplus_dai[] = {
+{
+	.name		= "HiFiBerry DAC+",
+	.stream_name	= "HiFiBerry DAC+ HiFi",
+	.cpu_dai_name	= "bcm2708-i2s.0",
+	.codec_dai_name	= "pcm512x-hifi",
+	.platform_name	= "bcm2708-i2s.0",
+	.codec_name	= "pcm512x.1-004d",
+	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBS_CFS,
+	.ops		= &snd_rpi_hifiberry_dacplus_ops,
+	.init		= snd_rpi_hifiberry_dacplus_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_hifiberry_dacplus = {
+	.name         = "snd_rpi_hifiberry_dacplus",
+	.dai_link     = snd_rpi_hifiberry_dacplus_dai,
+	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplus_dai),
+};
+
+static int snd_rpi_hifiberry_dacplus_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	snd_rpi_hifiberry_dacplus.dev = &pdev->dev;
+
+	if (pdev->dev.of_node) {
+	    struct device_node *i2s_node;
+	    struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_dacplus_dai[0];
+	    i2s_node = of_parse_phandle(pdev->dev.of_node,
+					"i2s-controller", 0);
+
+	    if (i2s_node) {
+		dai->cpu_dai_name = NULL;
+		dai->cpu_of_node = i2s_node;
+		dai->platform_name = NULL;
+		dai->platform_of_node = i2s_node;
+	    }
+	}
+
+	ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplus);
+	if (ret)
+		dev_err(&pdev->dev,
+			"snd_soc_register_card() failed: %d\n", ret);
+
+	return ret;
+}
+
+static int snd_rpi_hifiberry_dacplus_remove(struct platform_device *pdev)
+{
+	return snd_soc_unregister_card(&snd_rpi_hifiberry_dacplus);
+}
+
+static const struct of_device_id snd_rpi_hifiberry_dacplus_of_match[] = {
+	{ .compatible = "hifiberry,hifiberry-dacplus", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplus_of_match);
+
+static struct platform_driver snd_rpi_hifiberry_dacplus_driver = {
+	.driver = {
+		.name   = "snd-rpi-hifiberry-dacplus",
+		.owner  = THIS_MODULE,
+		.of_match_table = snd_rpi_hifiberry_dacplus_of_match,
+	},
+	.probe          = snd_rpi_hifiberry_dacplus_probe,
+	.remove         = snd_rpi_hifiberry_dacplus_remove,
+};
+
+module_platform_driver(snd_rpi_hifiberry_dacplus_driver);
+
+MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
+MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/bcm/hifiberry_digi.c linux-rpi/sound/soc/bcm/hifiberry_digi.c
--- linux-3.18.10/sound/soc/bcm/hifiberry_digi.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/bcm/hifiberry_digi.c	2015-03-26 11:47:03.340246554 +0100
@@ -0,0 +1,223 @@
+/*
+ * ASoC Driver for HifiBerry Digi
+ *
+ * Author: Daniel Matuschek <info@crazy-audio.com>
+ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
+ *	Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "../codecs/wm8804.h"
+
+static short int auto_shutdown_output = 0;
+module_param(auto_shutdown_output, short, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
+MODULE_PARM_DESC(auto_shutdown_output, "Shutdown SP/DIF output if playback is stopped");
+
+
+static int samplerate=44100;
+
+static int snd_rpi_hifiberry_digi_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_codec *codec = rtd->codec;
+
+	/* enable TX output */
+	snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+	return 0;
+}
+
+static int snd_rpi_hifiberry_digi_startup(struct snd_pcm_substream *substream) {
+	/* turn on digital output */
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_codec *codec = rtd->codec;
+	snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00);
+	return 0;
+}
+
+static void snd_rpi_hifiberry_digi_shutdown(struct snd_pcm_substream *substream) {
+	/* turn off output */
+	if (auto_shutdown_output) {
+		/* turn off output */
+		struct snd_soc_pcm_runtime *rtd = substream->private_data;
+		struct snd_soc_codec *codec = rtd->codec;
+		snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c);
+	}
+}
+
+
+static int snd_rpi_hifiberry_digi_hw_params(struct snd_pcm_substream *substream,
+				       struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	struct snd_soc_codec *codec = rtd->codec;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+	int sysclk = 27000000; /* This is fixed on this board */
+
+	long mclk_freq=0;
+	int mclk_div=1;
+	int sampling_freq=1;
+
+	int ret;
+
+	samplerate = params_rate(params);
+
+	if (samplerate<=96000) {
+		mclk_freq=samplerate*256;
+		mclk_div=WM8804_MCLKDIV_256FS;
+	} else {
+		mclk_freq=samplerate*128;
+		mclk_div=WM8804_MCLKDIV_128FS;
+	}
+	
+	switch (samplerate) {
+		case 32000:
+			sampling_freq=0x03;
+			break;
+		case 44100:
+			sampling_freq=0x00;
+			break;
+		case 48000:
+			sampling_freq=0x02;
+			break;
+		case 88200:
+			sampling_freq=0x08;
+			break;
+		case 96000:
+			sampling_freq=0x0a;
+			break;
+		case 176400:
+			sampling_freq=0x0c;
+			break;
+		case 192000:
+			sampling_freq=0x0e;
+			break;
+		default:
+			dev_err(substream->pcm->dev,
+			"Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
+			samplerate);
+	}
+
+	snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
+	snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
+					sysclk, SND_SOC_CLOCK_OUT);
+	if (ret < 0) {
+		dev_err(substream->pcm->dev,
+		"Failed to set WM8804 SYSCLK: %d\n", ret);
+		return ret;
+	}
+
+	/* Enable TX output */
+	snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+	/* Power on */
+	snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
+
+	/* set sampling frequency status bits */
+	snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq);
+
+	return snd_soc_dai_set_bclk_ratio(cpu_dai,64);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_hifiberry_digi_ops = {
+	.hw_params = snd_rpi_hifiberry_digi_hw_params,
+        .startup = snd_rpi_hifiberry_digi_startup,
+        .shutdown = snd_rpi_hifiberry_digi_shutdown,
+};
+
+static struct snd_soc_dai_link snd_rpi_hifiberry_digi_dai[] = {
+{
+	.name		= "HifiBerry Digi",
+	.stream_name	= "HifiBerry Digi HiFi",
+	.cpu_dai_name	= "bcm2708-i2s.0",
+	.codec_dai_name	= "wm8804-spdif",
+	.platform_name	= "bcm2708-i2s.0",
+	.codec_name	= "wm8804.1-003b",
+	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBM_CFM,
+	.ops		= &snd_rpi_hifiberry_digi_ops,
+	.init		= snd_rpi_hifiberry_digi_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_hifiberry_digi = {
+	.name         = "snd_rpi_hifiberry_digi",
+	.dai_link     = snd_rpi_hifiberry_digi_dai,
+	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_digi_dai),
+};
+
+static int snd_rpi_hifiberry_digi_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	snd_rpi_hifiberry_digi.dev = &pdev->dev;
+
+	if (pdev->dev.of_node) {
+	    struct device_node *i2s_node;
+	    struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_digi_dai[0];
+	    i2s_node = of_parse_phandle(pdev->dev.of_node,
+					"i2s-controller", 0);
+
+	    if (i2s_node) {
+		dai->cpu_dai_name = NULL;
+		dai->cpu_of_node = i2s_node;
+		dai->platform_name = NULL;
+		dai->platform_of_node = i2s_node;
+	    }
+	}
+
+	ret = snd_soc_register_card(&snd_rpi_hifiberry_digi);
+	if (ret)
+		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+
+	return ret;
+}
+
+static int snd_rpi_hifiberry_digi_remove(struct platform_device *pdev)
+{
+	return snd_soc_unregister_card(&snd_rpi_hifiberry_digi);
+}
+
+static const struct of_device_id snd_rpi_hifiberry_digi_of_match[] = {
+	{ .compatible = "hifiberry,hifiberry-digi", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_digi_of_match);
+
+static struct platform_driver snd_rpi_hifiberry_digi_driver = {
+	.driver = {
+		.name   = "snd-hifiberry-digi",
+		.owner  = THIS_MODULE,
+		.of_match_table = snd_rpi_hifiberry_digi_of_match,
+	},
+	.probe          = snd_rpi_hifiberry_digi_probe,
+	.remove         = snd_rpi_hifiberry_digi_remove,
+};
+
+module_platform_driver(snd_rpi_hifiberry_digi_driver);
+
+MODULE_AUTHOR("Daniel Matuschek <info@crazy-audio.com>");
+MODULE_DESCRIPTION("ASoC Driver for HifiBerry Digi");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/bcm/iqaudio-dac.c linux-rpi/sound/soc/bcm/iqaudio-dac.c
--- linux-3.18.10/sound/soc/bcm/iqaudio-dac.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/bcm/iqaudio-dac.c	2015-03-26 11:47:03.340246554 +0100
@@ -0,0 +1,133 @@
+/*
+ * ASoC Driver for IQaudIO DAC
+ *
+ * Author:	Florian Meier <florian.meier@koalo.de>
+ *		Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+static int snd_rpi_iqaudio_dac_init(struct snd_soc_pcm_runtime *rtd)
+{
+	int ret;
+	struct snd_soc_card *card = rtd->card;
+	struct snd_soc_codec *codec = rtd->codec;
+
+	ret = snd_soc_limit_volume(codec, "Digital Playback Volume", 207);
+	if (ret < 0)
+		dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
+
+	return 0;
+}
+
+static int snd_rpi_iqaudio_dac_hw_params(struct snd_pcm_substream *substream,
+				       struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+// NOT USED	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+// NOT USED	struct snd_soc_codec *codec = rtd->codec;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+	unsigned int sample_bits =
+		snd_pcm_format_physical_width(params_format(params));
+
+	return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_iqaudio_dac_ops = {
+	.hw_params = snd_rpi_iqaudio_dac_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_iqaudio_dac_dai[] = {
+{
+	.name		= "IQaudIO DAC",
+	.stream_name	= "IQaudIO DAC HiFi",
+	.cpu_dai_name	= "bcm2708-i2s.0",
+	.codec_dai_name	= "pcm512x-hifi",
+	.platform_name	= "bcm2708-i2s.0",
+	.codec_name	= "pcm512x.1-004c",
+	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBS_CFS,
+	.ops		= &snd_rpi_iqaudio_dac_ops,
+	.init		= snd_rpi_iqaudio_dac_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_iqaudio_dac = {
+	.name         = "IQaudIODAC",
+	.dai_link     = snd_rpi_iqaudio_dac_dai,
+	.num_links    = ARRAY_SIZE(snd_rpi_iqaudio_dac_dai),
+};
+
+static int snd_rpi_iqaudio_dac_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	snd_rpi_iqaudio_dac.dev = &pdev->dev;
+
+	if (pdev->dev.of_node) {
+	    struct device_node *i2s_node;
+	    struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_dac_dai[0];
+	    i2s_node = of_parse_phandle(pdev->dev.of_node,
+					"i2s-controller", 0);
+
+	    if (i2s_node) {
+		dai->cpu_dai_name = NULL;
+		dai->cpu_of_node = i2s_node;
+		dai->platform_name = NULL;
+		dai->platform_of_node = i2s_node;
+	    }
+	}
+
+	ret = snd_soc_register_card(&snd_rpi_iqaudio_dac);
+	if (ret)
+		dev_err(&pdev->dev,
+			"snd_soc_register_card() failed: %d\n", ret);
+
+	return ret;
+}
+
+static int snd_rpi_iqaudio_dac_remove(struct platform_device *pdev)
+{
+	return snd_soc_unregister_card(&snd_rpi_iqaudio_dac);
+}
+
+static const struct of_device_id iqaudio_of_match[] = {
+	{ .compatible = "iqaudio,iqaudio-dac", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, iqaudio_of_match);
+
+static struct platform_driver snd_rpi_iqaudio_dac_driver = {
+	.driver = {
+		.name   = "snd-rpi-iqaudio-dac",
+		.owner  = THIS_MODULE,
+		.of_match_table = iqaudio_of_match,
+	},
+	.probe          = snd_rpi_iqaudio_dac_probe,
+	.remove         = snd_rpi_iqaudio_dac_remove,
+};
+
+module_platform_driver(snd_rpi_iqaudio_dac_driver);
+
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_DESCRIPTION("ASoC Driver for IQAudio DAC");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/bcm/Kconfig linux-rpi/sound/soc/bcm/Kconfig
--- linux-3.18.10/sound/soc/bcm/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/sound/soc/bcm/Kconfig	2015-03-26 11:47:03.340246554 +0100
@@ -7,3 +7,63 @@
 	  Say Y or M if you want to add support for codecs attached to
 	  the BCM2835 I2S interface. You will also need
 	  to select the audio interfaces to support below.
+
+config SND_BCM2708_SOC_I2S
+	tristate "SoC Audio support for the Broadcom BCM2708 I2S module"
+	depends on MACH_BCM2708 || MACH_BCM2709
+	select REGMAP_MMIO
+	select SND_SOC_DMAENGINE_PCM
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	  Say Y or M if you want to add support for codecs attached to
+	  the BCM2708 I2S interface. You will also need
+	  to select the audio interfaces to support below.
+
+config SND_BCM2708_SOC_HIFIBERRY_DAC
+        tristate "Support for HifiBerry DAC"
+        depends on SND_BCM2708_SOC_I2S
+        select SND_SOC_PCM5102A
+        help
+         Say Y or M if you want to add support for HifiBerry DAC.
+
+config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
+        tristate "Support for HifiBerry DAC+"
+        depends on SND_BCM2708_SOC_I2S
+        select SND_SOC_PCM512x
+        help
+         Say Y or M if you want to add support for HifiBerry DAC+.
+
+config SND_BCM2708_SOC_HIFIBERRY_DIGI
+        tristate "Support for HifiBerry Digi"
+        depends on SND_BCM2708_SOC_I2S
+        select SND_SOC_WM8804
+        help
+         Say Y or M if you want to add support for HifiBerry Digi S/PDIF output board.
+
+config SND_BCM2708_SOC_HIFIBERRY_AMP
+        tristate "Support for the HifiBerry Amp"
+        depends on SND_BCM2708_SOC_I2S
+        select SND_SOC_TAS5713
+        help
+         Say Y or M if you want to add support for the HifiBerry Amp amplifier board.
+
+config SND_BCM2708_SOC_RPI_DAC
+        tristate "Support for RPi-DAC"
+        depends on SND_BCM2708_SOC_I2S
+        select SND_SOC_PCM1794A
+        help
+         Say Y or M if you want to add support for RPi-DAC.
+
+config SND_BCM2708_SOC_RPI_PROTO
+	tristate "Support for Rpi-PROTO"
+	depends on SND_BCM2708_SOC_I2S
+	select SND_SOC_WM8731
+	help
+	  Say Y or M if you want to add support for Audio Codec Board PROTO (WM8731).
+
+config SND_BCM2708_SOC_IQAUDIO_DAC
+	tristate "Support for IQaudIO-DAC"
+	depends on SND_BCM2708_SOC_I2S
+	select SND_SOC_PCM512x_I2C
+	help
+	  Say Y or M if you want to add support for IQaudIO-DAC.
diff -Nur linux-3.18.10/sound/soc/bcm/Makefile linux-rpi/sound/soc/bcm/Makefile
--- linux-3.18.10/sound/soc/bcm/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/sound/soc/bcm/Makefile	2015-03-26 11:47:03.340246554 +0100
@@ -3,3 +3,24 @@
 
 obj-$(CONFIG_SND_BCM2835_SOC_I2S) += snd-soc-bcm2835-i2s.o
 
+# BCM2708 Platform Support
+snd-soc-bcm2708-i2s-objs := bcm2708-i2s.o
+
+obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd-soc-bcm2708-i2s.o
+
+# BCM2708 Machine Support
+snd-soc-hifiberry-dac-objs := hifiberry_dac.o
+snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
+snd-soc-hifiberry-digi-objs := hifiberry_digi.o
+snd-soc-hifiberry-amp-objs := hifiberry_amp.o
+snd-soc-rpi-dac-objs := rpi-dac.o
+snd-soc-rpi-proto-objs := rpi-proto.o
+snd-soc-iqaudio-dac-objs := iqaudio-dac.o
+
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o
+obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
+obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
diff -Nur linux-3.18.10/sound/soc/bcm/rpi-dac.c linux-rpi/sound/soc/bcm/rpi-dac.c
--- linux-3.18.10/sound/soc/bcm/rpi-dac.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/bcm/rpi-dac.c	2015-03-26 11:47:03.340246554 +0100
@@ -0,0 +1,97 @@
+/*
+ * ASoC Driver for RPi-DAC.
+ *
+ * Author:	Florian Meier <florian.meier@koalo.de>
+ *		Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+static int snd_rpi_rpi_dac_init(struct snd_soc_pcm_runtime *rtd)
+{
+	return 0;
+}
+
+static int snd_rpi_rpi_dac_hw_params(struct snd_pcm_substream *substream,
+				       struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+	return snd_soc_dai_set_bclk_ratio(cpu_dai, 32*2);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_rpi_dac_ops = {
+	.hw_params = snd_rpi_rpi_dac_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_rpi_dac_dai[] = {
+{
+	.name		= "RPi-DAC",
+	.stream_name	= "RPi-DAC HiFi",
+	.cpu_dai_name	= "bcm2708-i2s.0",
+	.codec_dai_name	= "pcm1794a-hifi",
+	.platform_name	= "bcm2708-i2s.0",
+	.codec_name	= "pcm1794a-codec",
+	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBS_CFS,
+	.ops		= &snd_rpi_rpi_dac_ops,
+	.init		= snd_rpi_rpi_dac_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_rpi_dac = {
+	.name         = "snd_rpi_rpi_dac",
+	.dai_link     = snd_rpi_rpi_dac_dai,
+	.num_links    = ARRAY_SIZE(snd_rpi_rpi_dac_dai),
+};
+
+static int snd_rpi_rpi_dac_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	snd_rpi_rpi_dac.dev = &pdev->dev;
+	ret = snd_soc_register_card(&snd_rpi_rpi_dac);
+	if (ret)
+		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+
+	return ret;
+}
+
+static int snd_rpi_rpi_dac_remove(struct platform_device *pdev)
+{
+	return snd_soc_unregister_card(&snd_rpi_rpi_dac);
+}
+
+static struct platform_driver snd_rpi_rpi_dac_driver = {
+        .driver = {
+                .name   = "snd-rpi-dac",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = snd_rpi_rpi_dac_probe,
+        .remove         = snd_rpi_rpi_dac_remove,
+};
+
+module_platform_driver(snd_rpi_rpi_dac_driver);
+
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_DESCRIPTION("ASoC Driver for RPi-DAC");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/bcm/rpi-proto.c linux-rpi/sound/soc/bcm/rpi-proto.c
--- linux-3.18.10/sound/soc/bcm/rpi-proto.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/bcm/rpi-proto.c	2015-03-26 11:47:03.340246554 +0100
@@ -0,0 +1,152 @@
+/*
+ * ASoC driver for PROTO AudioCODEC (with a WM8731)
+ * connected to a Raspberry Pi
+ *
+ * Author:      Florian Meier, <koalo@koalo.de>
+ *	      Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "../codecs/wm8731.h"
+
+static const unsigned int wm8731_rates_12288000[] = {
+	8000, 32000, 48000, 96000,
+};
+
+static struct snd_pcm_hw_constraint_list wm8731_constraints_12288000 = {
+	.list = wm8731_rates_12288000,
+	.count = ARRAY_SIZE(wm8731_rates_12288000),
+};
+
+static int snd_rpi_proto_startup(struct snd_pcm_substream *substream)
+{
+	/* Setup constraints, because there is a 12.288 MHz XTAL on the board */
+	snd_pcm_hw_constraint_list(substream->runtime, 0,
+				SNDRV_PCM_HW_PARAM_RATE,
+				&wm8731_constraints_12288000);
+	return 0;
+}
+
+static int snd_rpi_proto_hw_params(struct snd_pcm_substream *substream,
+				       struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	int sysclk = 12288000; /* This is fixed on this board */
+
+	/* Set proto bclk */
+	int ret = snd_soc_dai_set_bclk_ratio(cpu_dai,32*2);
+	if (ret < 0){
+		dev_err(substream->pcm->dev,
+				"Failed to set BCLK ratio %d\n", ret);
+		return ret;
+	}
+
+	/* Set proto sysclk */
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
+			sysclk, SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		dev_err(substream->pcm->dev,
+				"Failed to set WM8731 SYSCLK: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_proto_ops = {
+	.startup = snd_rpi_proto_startup,
+	.hw_params = snd_rpi_proto_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_proto_dai[] = {
+{
+	.name		= "WM8731",
+	.stream_name	= "WM8731 HiFi",
+	.cpu_dai_name	= "bcm2708-i2s.0",
+	.codec_dai_name	= "wm8731-hifi",
+	.platform_name	= "bcm2708-i2s.0",
+	.codec_name	= "wm8731.1-001a",
+	.dai_fmt	= SND_SOC_DAIFMT_I2S
+				| SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBM_CFM,
+	.ops		= &snd_rpi_proto_ops,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_proto = {
+	.name		= "snd_rpi_proto",
+	.dai_link	= snd_rpi_proto_dai,
+	.num_links	= ARRAY_SIZE(snd_rpi_proto_dai),
+};
+
+static int snd_rpi_proto_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	snd_rpi_proto.dev = &pdev->dev;
+
+	if (pdev->dev.of_node) {
+		struct device_node *i2s_node;
+		struct snd_soc_dai_link *dai = &snd_rpi_proto_dai[0];
+		i2s_node = of_parse_phandle(pdev->dev.of_node,
+				            "i2s-controller", 0);
+
+		if (i2s_node) {
+			dai->cpu_dai_name = NULL;
+			dai->cpu_of_node = i2s_node;
+			dai->platform_name = NULL;
+			dai->platform_of_node = i2s_node;
+		}
+	}
+
+	ret = snd_soc_register_card(&snd_rpi_proto);
+	if (ret) {
+		dev_err(&pdev->dev,
+				"snd_soc_register_card() failed: %d\n", ret);
+	}
+
+	return ret;
+}
+
+
+static int snd_rpi_proto_remove(struct platform_device *pdev)
+{
+	return snd_soc_unregister_card(&snd_rpi_proto);
+}
+
+static const struct of_device_id snd_rpi_proto_of_match[] = {
+	{ .compatible = "rpi,rpi-proto", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_proto_of_match);
+
+static struct platform_driver snd_rpi_proto_driver = {
+	.driver = {
+		.name   = "snd-rpi-proto",
+		.owner  = THIS_MODULE,
+		.of_match_table = snd_rpi_proto_of_match,
+	},
+	.probe	  = snd_rpi_proto_probe,
+	.remove	 = snd_rpi_proto_remove,
+};
+
+module_platform_driver(snd_rpi_proto_driver);
+
+MODULE_AUTHOR("Florian Meier");
+MODULE_DESCRIPTION("ASoC Driver for Raspberry Pi connected to PROTO board (WM8731)");
+MODULE_LICENSE("GPL");
diff -Nur linux-3.18.10/sound/soc/codecs/Kconfig linux-rpi/sound/soc/codecs/Kconfig
--- linux-3.18.10/sound/soc/codecs/Kconfig	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/sound/soc/codecs/Kconfig	2015-03-26 11:47:03.360246573 +0100
@@ -80,6 +80,8 @@
 	select SND_SOC_PCM512x_I2C if I2C
 	select SND_SOC_PCM512x_SPI if SPI_MASTER
 	select SND_SOC_RT286 if I2C
+	select SND_SOC_PCM5102A if I2C
+	select SND_SOC_PCM1794A if I2C
 	select SND_SOC_RT5631 if I2C
 	select SND_SOC_RT5640 if I2C
 	select SND_SOC_RT5645 if I2C
@@ -103,6 +105,7 @@
 	select SND_SOC_TAS5086 if I2C
 	select SND_SOC_TLV320AIC23_I2C if I2C
 	select SND_SOC_TLV320AIC23_SPI if SPI_MASTER
+	select SND_SOC_TAS5713 if I2C
 	select SND_SOC_TLV320AIC26 if SPI_MASTER
 	select SND_SOC_TLV320AIC31XX if I2C
 	select SND_SOC_TLV320AIC32X4 if I2C
@@ -486,6 +489,12 @@
 	tristate
 	depends on I2C
 
+config SND_SOC_PCM1794A
+	tristate
+
+config SND_SOC_PCM5102A
+	tristate
+
 config SND_SOC_RT5631
 	tristate
 
@@ -577,6 +586,9 @@
 	tristate "Texas Instruments TAS5086 speaker amplifier"
 	depends on I2C
 
+config SND_SOC_TAS5713
+	tristate
+
 config SND_SOC_TLV320AIC23
 	tristate
 
diff -Nur linux-3.18.10/sound/soc/codecs/Makefile linux-rpi/sound/soc/codecs/Makefile
--- linux-3.18.10/sound/soc/codecs/Makefile	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/sound/soc/codecs/Makefile	2015-03-26 11:47:03.360246573 +0100
@@ -74,6 +74,8 @@
 snd-soc-pcm512x-spi-objs := pcm512x-spi.o
 snd-soc-rl6231-objs := rl6231.o
 snd-soc-rt286-objs := rt286.o
+snd-soc-pcm1794a-objs := pcm1794a.o
+snd-soc-pcm5102a-objs := pcm5102a.o
 snd-soc-rt5631-objs := rt5631.o
 snd-soc-rt5640-objs := rt5640.o
 snd-soc-rt5645-objs := rt5645.o
@@ -101,6 +103,7 @@
 snd-soc-sta529-objs := sta529.o
 snd-soc-stac9766-objs := stac9766.o
 snd-soc-tas5086-objs := tas5086.o
+snd-soc-tas5713-objs := tas5713.o
 snd-soc-tlv320aic23-objs := tlv320aic23.o
 snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
 snd-soc-tlv320aic23-spi-objs := tlv320aic23-spi.o
@@ -250,6 +253,8 @@
 obj-$(CONFIG_SND_SOC_PCM512x_SPI)	+= snd-soc-pcm512x-spi.o
 obj-$(CONFIG_SND_SOC_RL6231)	+= snd-soc-rl6231.o
 obj-$(CONFIG_SND_SOC_RT286)	+= snd-soc-rt286.o
+obj-$(CONFIG_SND_SOC_PCM1794A)	+= snd-soc-pcm1794a.o
+obj-$(CONFIG_SND_SOC_PCM5102A)	+= snd-soc-pcm5102a.o
 obj-$(CONFIG_SND_SOC_RT5631)	+= snd-soc-rt5631.o
 obj-$(CONFIG_SND_SOC_RT5640)	+= snd-soc-rt5640.o
 obj-$(CONFIG_SND_SOC_RT5645)	+= snd-soc-rt5645.o
@@ -274,6 +279,7 @@
 obj-$(CONFIG_SND_SOC_STAC9766)	+= snd-soc-stac9766.o
 obj-$(CONFIG_SND_SOC_TAS2552)	+= snd-soc-tas2552.o
 obj-$(CONFIG_SND_SOC_TAS5086)	+= snd-soc-tas5086.o
+obj-$(CONFIG_SND_SOC_TAS5713)	+= snd-soc-tas5713.o
 obj-$(CONFIG_SND_SOC_TLV320AIC23)	+= snd-soc-tlv320aic23.o
 obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C)	+= snd-soc-tlv320aic23-i2c.o
 obj-$(CONFIG_SND_SOC_TLV320AIC23_SPI)	+= snd-soc-tlv320aic23-spi.o
diff -Nur linux-3.18.10/sound/soc/codecs/pcm1794a.c linux-rpi/sound/soc/codecs/pcm1794a.c
--- linux-3.18.10/sound/soc/codecs/pcm1794a.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/codecs/pcm1794a.c	2015-03-26 11:47:03.480246684 +0100
@@ -0,0 +1,62 @@
+/*
+ * Driver for the PCM1794A codec
+ *
+ * Author:	Florian Meier <florian.meier@koalo.de>
+ *		Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/soc.h>
+
+static struct snd_soc_dai_driver pcm1794a_dai = {
+	.name = "pcm1794a-hifi",
+	.playback = {
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_8000_192000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE |
+			   SNDRV_PCM_FMTBIT_S24_LE
+	},
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_pcm1794a;
+
+static int pcm1794a_probe(struct platform_device *pdev)
+{
+	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_pcm1794a,
+			&pcm1794a_dai, 1);
+}
+
+static int pcm1794a_remove(struct platform_device *pdev)
+{
+	snd_soc_unregister_codec(&pdev->dev);
+	return 0;
+}
+
+static struct platform_driver pcm1794a_codec_driver = {
+	.probe 		= pcm1794a_probe,
+	.remove 	= pcm1794a_remove,
+	.driver		= {
+		.name	= "pcm1794a-codec",
+		.owner	= THIS_MODULE,
+	},
+};
+
+module_platform_driver(pcm1794a_codec_driver);
+
+MODULE_DESCRIPTION("ASoC PCM1794A codec driver");
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/codecs/pcm5102a.c linux-rpi/sound/soc/codecs/pcm5102a.c
--- linux-3.18.10/sound/soc/codecs/pcm5102a.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/codecs/pcm5102a.c	2015-03-26 11:47:03.480246684 +0100
@@ -0,0 +1,70 @@
+/*
+ * Driver for the PCM5102A codec
+ *
+ * Author:	Florian Meier <florian.meier@koalo.de>
+ *		Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/soc.h>
+
+static struct snd_soc_dai_driver pcm5102a_dai = {
+	.name = "pcm5102a-hifi",
+	.playback = {
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_8000_192000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE |
+			   SNDRV_PCM_FMTBIT_S24_LE |
+			   SNDRV_PCM_FMTBIT_S32_LE
+	},
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_pcm5102a;
+
+static int pcm5102a_probe(struct platform_device *pdev)
+{
+	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_pcm5102a,
+			&pcm5102a_dai, 1);
+}
+
+static int pcm5102a_remove(struct platform_device *pdev)
+{
+	snd_soc_unregister_codec(&pdev->dev);
+	return 0;
+}
+
+static const struct of_device_id pcm5102a_of_match[] = {
+	{ .compatible = "ti,pcm5102a", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, pcm5102a_of_match);
+
+static struct platform_driver pcm5102a_codec_driver = {
+	.probe 		= pcm5102a_probe,
+	.remove 	= pcm5102a_remove,
+	.driver		= {
+		.name	= "pcm5102a-codec",
+		.owner	= THIS_MODULE,
+		.of_match_table = pcm5102a_of_match,
+	},
+};
+
+module_platform_driver(pcm5102a_codec_driver);
+
+MODULE_DESCRIPTION("ASoC PCM5102A codec driver");
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/codecs/pcm512x.c linux-rpi/sound/soc/codecs/pcm512x.c
--- linux-3.18.10/sound/soc/codecs/pcm512x.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/sound/soc/codecs/pcm512x.c	2015-03-26 11:47:03.480246684 +0100
@@ -261,9 +261,9 @@
 static const struct snd_kcontrol_new pcm512x_controls[] = {
 SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
 		 PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
-SOC_DOUBLE_TLV("Playback Volume", PCM512x_ANALOG_GAIN_CTRL,
+SOC_DOUBLE_TLV("Analogue Playback Volume", PCM512x_ANALOG_GAIN_CTRL,
 	       PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
-SOC_DOUBLE_TLV("Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
+SOC_DOUBLE_TLV("Analogue Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
 	       PCM512x_AGBL_SHIFT, PCM512x_AGBR_SHIFT, 1, 0, boost_tlv),
 SOC_DOUBLE("Digital Playback Switch", PCM512x_MUTE, PCM512x_RQML_SHIFT,
 	   PCM512x_RQMR_SHIFT, 1, 1),
diff -Nur linux-3.18.10/sound/soc/codecs/tas5713.c linux-rpi/sound/soc/codecs/tas5713.c
--- linux-3.18.10/sound/soc/codecs/tas5713.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/codecs/tas5713.c	2015-03-26 11:47:03.568246766 +0100
@@ -0,0 +1,369 @@
+/*
+ * ASoC Driver for TAS5713
+ *
+ * Author:	Sebastian Eickhoff <basti.eickhoff@googlemail.com>
+ *		Copyright 2014
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/of_device.h>
+#include <linux/spi/spi.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+
+#include "tas5713.h"
+
+
+static struct i2c_client *i2c;
+
+struct tas5713_priv {
+	struct regmap *regmap;
+	int mclk_div;
+	struct snd_soc_codec *codec;
+};
+
+static struct tas5713_priv *priv_data;
+
+
+
+
+/*
+ *    _   _    ___   _      ___         _           _
+ *   /_\ | |  / __| /_\    / __|___ _ _| |_ _ _ ___| |___
+ *  / _ \| |__\__ \/ _ \  | (__/ _ \ ' \  _| '_/ _ \ (_-<
+ * /_/ \_\____|___/_/ \_\  \___\___/_||_\__|_| \___/_/__/
+ *
+ */
+
+static const DECLARE_TLV_DB_SCALE(tas5713_vol_tlv, -10000, 50, 1);
+
+
+static const struct snd_kcontrol_new tas5713_snd_controls[] = {
+	SOC_SINGLE_TLV  ("Master"    , TAS5713_VOL_MASTER, 0, 248, 1, tas5713_vol_tlv),
+	SOC_DOUBLE_R_TLV("Channels"  , TAS5713_VOL_CH1, TAS5713_VOL_CH2, 0, 248, 1, tas5713_vol_tlv)
+};
+
+
+
+
+/*
+ *  __  __         _    _            ___      _
+ * |  \/  |__ _ __| |_ (_)_ _  ___  |   \ _ _(_)_ _____ _ _
+ * | |\/| / _` / _| ' \| | ' \/ -_) | |) | '_| \ V / -_) '_|
+ * |_|  |_\__,_\__|_||_|_|_||_\___| |___/|_| |_|\_/\___|_|
+ *
+ */
+
+static int tas5713_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params,
+			    struct snd_soc_dai *dai)
+{
+	u16 blen = 0x00;
+
+	struct snd_soc_codec *codec;
+	codec = dai->codec;
+	priv_data->codec = dai->codec;
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		blen = 0x03;
+		break;
+	case SNDRV_PCM_FORMAT_S20_3LE:
+		blen = 0x1;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		blen = 0x04;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		blen = 0x05;
+		break;
+	default:
+		dev_err(dai->dev, "Unsupported word length: %u\n",
+			params_format(params));
+		return -EINVAL;
+	}
+
+	// set word length
+	snd_soc_update_bits(codec, TAS5713_SERIAL_DATA_INTERFACE, 0x7, blen);
+
+	return 0;
+}
+
+
+static int tas5713_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
+{
+	unsigned int val = 0;
+
+	struct tas5713_priv *tas5713;
+	struct snd_soc_codec *codec = dai->codec;
+	tas5713 = snd_soc_codec_get_drvdata(codec);
+
+	if (mute) {
+		val = TAS5713_SOFT_MUTE_ALL;
+	}
+
+	return regmap_write(tas5713->regmap, TAS5713_SOFT_MUTE, val);
+}
+
+
+static const struct snd_soc_dai_ops tas5713_dai_ops = {
+	.hw_params 		= tas5713_hw_params,
+	.mute_stream	= tas5713_mute_stream,
+};
+
+
+static struct snd_soc_dai_driver tas5713_dai = {
+	.name		= "tas5713-hifi",
+	.playback 	= {
+		.stream_name	= "Playback",
+		.channels_min	= 2,
+		.channels_max	= 2,
+		.rates		    = SNDRV_PCM_RATE_8000_48000,
+		.formats	    = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE ),
+	},
+	.ops        = &tas5713_dai_ops,
+};
+
+
+
+
+/*
+ *   ___         _          ___      _
+ *  / __|___  __| |___ __  |   \ _ _(_)_ _____ _ _
+ * | (__/ _ \/ _` / -_) _| | |) | '_| \ V / -_) '_|
+ *  \___\___/\__,_\___\__| |___/|_| |_|\_/\___|_|
+ *
+ */
+
+static int tas5713_remove(struct snd_soc_codec *codec)
+{
+	struct tas5713_priv *tas5713;
+
+	tas5713 = snd_soc_codec_get_drvdata(codec);
+
+	return 0;
+}
+
+
+static int tas5713_probe(struct snd_soc_codec *codec)
+{
+	struct tas5713_priv *tas5713;
+	int i, ret;
+
+	i2c = container_of(codec->dev, struct i2c_client, dev);
+
+	tas5713 = snd_soc_codec_get_drvdata(codec);
+
+	// Reset error
+	ret = snd_soc_write(codec, TAS5713_ERROR_STATUS, 0x00);
+	if (ret < 0) return ret;
+
+	// Trim oscillator
+	ret = snd_soc_write(codec, TAS5713_OSC_TRIM, 0x00);
+	if (ret < 0) return ret;
+	msleep(1000);
+
+	// Reset error
+	ret = snd_soc_write(codec, TAS5713_ERROR_STATUS, 0x00);
+	if (ret < 0) return ret;
+
+	// Clock mode: 44/48kHz, MCLK=64xfs
+	ret = snd_soc_write(codec, TAS5713_CLOCK_CTRL, 0x60);
+	if (ret < 0) return ret;
+
+	// I2S 24bit
+	ret = snd_soc_write(codec, TAS5713_SERIAL_DATA_INTERFACE, 0x05);
+	if (ret < 0) return ret;
+
+	// Unmute
+	ret = snd_soc_write(codec, TAS5713_SYSTEM_CTRL2, 0x00);
+	if (ret < 0) return ret;
+	ret = snd_soc_write(codec, TAS5713_SOFT_MUTE, 0x00);
+	if (ret < 0) return ret;
+
+	// Set volume to 0db
+	ret = snd_soc_write(codec, TAS5713_VOL_MASTER, 0x00);
+	if (ret < 0) return ret;
+
+	// Now start programming the default initialization sequence
+	for (i = 0; i < ARRAY_SIZE(tas5713_init_sequence); ++i) {
+		ret = i2c_master_send(i2c,
+				     tas5713_init_sequence[i].data,
+				     tas5713_init_sequence[i].size);
+		if (ret < 0) {
+			printk(KERN_INFO "TAS5713 CODEC PROBE: InitSeq returns: %d\n", ret);
+		}
+	}
+
+	// Unmute
+	ret = snd_soc_write(codec, TAS5713_SYSTEM_CTRL2, 0x00);
+	if (ret < 0) return ret;
+
+	return 0;
+}
+
+
+static struct snd_soc_codec_driver soc_codec_dev_tas5713 = {
+	.probe = tas5713_probe,
+	.remove = tas5713_remove,
+	.controls = tas5713_snd_controls,
+	.num_controls = ARRAY_SIZE(tas5713_snd_controls),
+};
+
+
+
+
+/*
+ *   ___ ___ ___   ___      _
+ *  |_ _|_  ) __| |   \ _ _(_)_ _____ _ _
+ *   | | / / (__  | |) | '_| \ V / -_) '_|
+ *  |___/___\___| |___/|_| |_|\_/\___|_|
+ *
+ */
+
+static const struct reg_default tas5713_reg_defaults[] = {
+	{ 0x07 ,0x80 },     // R7  - VOL_MASTER    - -40dB
+	{ 0x08 ,  30 },     // R8  - VOL_CH1	   -   0dB
+	{ 0x09 ,  30 },     // R9  - VOL_CH2       -   0dB
+	{ 0x0A ,0x80 },     // R10 - VOL_HEADPHONE - -40dB
+};
+
+
+static bool tas5713_reg_volatile(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+		case TAS5713_DEVICE_ID:
+		case TAS5713_ERROR_STATUS:
+			return true;
+	default:
+			return false;
+	}
+}
+
+
+static const struct of_device_id tas5713_of_match[] = {
+	{ .compatible = "ti,tas5713", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, tas5713_of_match);
+
+
+static struct regmap_config tas5713_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = TAS5713_MAX_REGISTER,
+	.volatile_reg = tas5713_reg_volatile,
+
+	.cache_type = REGCACHE_RBTREE,
+	.reg_defaults = tas5713_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(tas5713_reg_defaults),
+};
+
+
+static int tas5713_i2c_probe(struct i2c_client *i2c,
+			    const struct i2c_device_id *id)
+{
+	int ret;
+
+	priv_data = devm_kzalloc(&i2c->dev, sizeof *priv_data, GFP_KERNEL);
+	if (!priv_data)
+		return -ENOMEM;
+
+	priv_data->regmap = devm_regmap_init_i2c(i2c, &tas5713_regmap_config);
+	if (IS_ERR(priv_data->regmap)) {
+		ret = PTR_ERR(priv_data->regmap);
+		return ret;
+	}
+
+	i2c_set_clientdata(i2c, priv_data);
+
+	ret = snd_soc_register_codec(&i2c->dev,
+				     &soc_codec_dev_tas5713, &tas5713_dai, 1);
+
+	return ret;
+}
+
+
+static int tas5713_i2c_remove(struct i2c_client *i2c)
+{
+	snd_soc_unregister_codec(&i2c->dev);
+	i2c_set_clientdata(i2c, NULL);
+
+	kfree(priv_data);
+
+	return 0;
+}
+
+
+static const struct i2c_device_id tas5713_i2c_id[] = {
+	{ "tas5713", 0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, tas5713_i2c_id);
+
+
+static struct i2c_driver tas5713_i2c_driver = {
+	.driver = {
+		.name = "tas5713",
+		.owner = THIS_MODULE,
+		.of_match_table = tas5713_of_match,
+	},
+	.probe = tas5713_i2c_probe,
+	.remove = tas5713_i2c_remove,
+	.id_table = tas5713_i2c_id
+};
+
+
+static int __init tas5713_modinit(void)
+{
+	int ret = 0;
+
+	ret = i2c_add_driver(&tas5713_i2c_driver);
+	if (ret) {
+		printk(KERN_ERR "Failed to register tas5713 I2C driver: %d\n",
+		       ret);
+	}
+
+	return ret;
+}
+module_init(tas5713_modinit);
+
+
+static void __exit tas5713_exit(void)
+{
+	i2c_del_driver(&tas5713_i2c_driver);
+}
+module_exit(tas5713_exit);
+
+
+MODULE_AUTHOR("Sebastian Eickhoff <basti.eickhoff@googlemail.com>");
+MODULE_DESCRIPTION("ASoC driver for TAS5713");
+MODULE_LICENSE("GPL v2");
diff -Nur linux-3.18.10/sound/soc/codecs/tas5713.h linux-rpi/sound/soc/codecs/tas5713.h
--- linux-3.18.10/sound/soc/codecs/tas5713.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-rpi/sound/soc/codecs/tas5713.h	2015-03-26 11:47:03.568246766 +0100
@@ -0,0 +1,210 @@
+/*
+ * ASoC Driver for TAS5713
+ *
+ * Author:      Sebastian Eickhoff <basti.eickhoff@googlemail.com>
+ *              Copyright 2014
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef _TAS5713_H
+#define _TAS5713_H
+
+
+// TAS5713 I2C-bus register addresses
+
+#define TAS5713_CLOCK_CTRL              0x00
+#define TAS5713_DEVICE_ID               0x01
+#define TAS5713_ERROR_STATUS            0x02
+#define TAS5713_SYSTEM_CTRL1            0x03
+#define TAS5713_SERIAL_DATA_INTERFACE   0x04
+#define TAS5713_SYSTEM_CTRL2            0x05
+#define TAS5713_SOFT_MUTE               0x06
+#define TAS5713_VOL_MASTER              0x07
+#define TAS5713_VOL_CH1                 0x08
+#define TAS5713_VOL_CH2                 0x09
+#define TAS5713_VOL_HEADPHONE           0x0A
+#define TAS5713_VOL_CONFIG              0x0E
+#define TAS5713_MODULATION_LIMIT        0x10
+#define TAS5713_IC_DLY_CH1              0x11
+#define TAS5713_IC_DLY_CH2              0x12
+#define TAS5713_IC_DLY_CH3              0x13
+#define TAS5713_IC_DLY_CH4              0x14
+
+#define TAS5713_START_STOP_PERIOD       0x1A
+#define TAS5713_OSC_TRIM                0x1B
+#define TAS5713_BKND_ERR                0x1C
+
+#define TAS5713_INPUT_MUX               0x20
+#define TAS5713_SRC_SELECT_CH4          0x21
+#define TAS5713_PWM_MUX                 0x25
+
+#define TAS5713_CH1_BQ0                 0x29
+#define TAS5713_CH1_BQ1                 0x2A
+#define TAS5713_CH1_BQ2                 0x2B
+#define TAS5713_CH1_BQ3                 0x2C
+#define TAS5713_CH1_BQ4                 0x2D
+#define TAS5713_CH1_BQ5                 0x2E
+#define TAS5713_CH1_BQ6                 0x2F
+#define TAS5713_CH1_BQ7                 0x58
+#define TAS5713_CH1_BQ8                 0x59
+
+#define TAS5713_CH2_BQ0                 0x30
+#define TAS5713_CH2_BQ1                 0x31
+#define TAS5713_CH2_BQ2                 0x32
+#define TAS5713_CH2_BQ3                 0x33
+#define TAS5713_CH2_BQ4                 0x34
+#define TAS5713_CH2_BQ5                 0x35
+#define TAS5713_CH2_BQ6                 0x36
+#define TAS5713_CH2_BQ7                 0x5C
+#define TAS5713_CH2_BQ8                 0x5D
+
+#define TAS5713_CH4_BQ0                 0x5A
+#define TAS5713_CH4_BQ1                 0x5B
+#define TAS5713_CH3_BQ0                 0x5E
+#define TAS5713_CH3_BQ1                 0x5F
+
+#define TAS5713_DRC1_SOFTENING_FILTER_ALPHA_OMEGA       0x3B
+#define TAS5713_DRC1_ATTACK_RELEASE_RATE                0x3C
+#define TAS5713_DRC2_SOFTENING_FILTER_ALPHA_OMEGA       0x3E
+#define TAS5713_DRC2_ATTACK_RELEASE_RATE                0x3F
+#define TAS5713_DRC1_ATTACK_RELEASE_THRES               0x40
+#define TAS5713_DRC2_ATTACK_RELEASE_THRES               0x43
+#define TAS5713_DRC_CTRL                                0x46
+
+#define TAS5713_BANK_SW_CTRL            0x50
+#define TAS5713_CH1_OUTPUT_MIXER        0x51
+#define TAS5713_CH2_OUTPUT_MIXER        0x52
+#define TAS5713_CH1_INPUT_MIXER         0x53
+#define TAS5713_CH2_INPUT_MIXER         0x54
+#define TAS5713_OUTPUT_POST_SCALE       0x56
+#define TAS5713_OUTPUT_PRESCALE         0x57
+
+#define TAS5713_IDF_POST_SCALE          0x62
+
+#define TAS5713_CH1_INLINE_MIXER        0x70
+#define TAS5713_CH1_INLINE_DRC_EN_MIXER 0x71
+#define TAS5713_CH1_R_CHANNEL_MIXER     0x72
+#define TAS5713_CH1_L_CHANNEL_MIXER     0x73
+#define TAS5713_CH2_INLINE_MIXER        0x74
+#define TAS5713_CH2_INLINE_DRC_EN_MIXER 0x75
+#define TAS5713_CH2_L_CHANNEL_MIXER     0x76
+#define TAS5713_CH2_R_CHANNEL_MIXER     0x77
+
+#define TAS5713_UPDATE_DEV_ADDR_KEY     0xF8
+#define TAS5713_UPDATE_DEV_ADDR_REG     0xF9
+
+#define TAS5713_REGISTER_COUNT          0x46
+#define TAS5713_MAX_REGISTER            0xF9
+
+
+// Bitmasks for registers
+#define TAS5713_SOFT_MUTE_ALL           0x07
+
+
+
+struct tas5713_init_command {
+        const int size;
+        const char *const data;
+};
+
+static const struct tas5713_init_command tas5713_init_sequence[] = {
+
+        // Trim oscillator
+    { .size = 2,  .data = "\x1B\x00" },
+    // System control register 1 (0x03): block DC
+    { .size = 2,  .data = "\x03\x80" },
+    // Mute everything
+    { .size = 2,  .data = "\x05\x40" },
+    // Modulation limit register (0x10): 97.7%
+    { .size = 2,  .data = "\x10\x02" },
+    // Interchannel delay registers
+    // (0x11, 0x12, 0x13, and 0x14): BD mode
+    { .size = 2,  .data = "\x11\xB8" },
+    { .size = 2,  .data = "\x12\x60" },
+    { .size = 2,  .data = "\x13\xA0" },
+    { .size = 2,  .data = "\x14\x48" },
+    // PWM shutdown group register (0x19): no shutdown
+    { .size = 2,  .data = "\x19\x00" },
+    // Input multiplexer register (0x20): BD mode
+    { .size = 2,  .data = "\x20\x00\x89\x77\x72" },
+    // PWM output mux register (0x25)
+    // Channel 1 --> OUTA, channel 1 neg --> OUTB
+    // Channel 2 --> OUTC, channel 2 neg --> OUTD
+    { .size = 5,  .data = "\x25\x01\x02\x13\x45" },
+    // DRC control (0x46): DRC off
+    { .size = 5,  .data = "\x46\x00\x00\x00\x00" },
+    // BKND_ERR register (0x1C): 299ms reset period
+    { .size = 2,  .data = "\x1C\x07" },
+    // Mute channel 3
+    { .size = 2,  .data = "\x0A\xFF" },
+    // Volume configuration register (0x0E): volume slew 512 steps
+    { .size = 2,  .data = "\x0E\x90" },
+    // Clock control register (0x00): 44/48kHz, MCLK=64xfs
+    { .size = 2,  .data = "\x00\x60" },
+    // Bank switch and eq control (0x50): no bank switching
+    { .size = 5,  .data = "\x50\x00\x00\x00\x00" },
+    // Volume registers (0x07, 0x08, 0x09, 0x0A)
+    { .size = 2,  .data = "\x07\x20" },
+    { .size = 2,  .data = "\x08\x30" },
+    { .size = 2,  .data = "\x09\x30" },
+    { .size = 2,  .data = "\x0A\xFF" },
+    // 0x72, 0x73, 0x76, 0x77 input mixer:
+    // no intermix between channels
+    { .size = 5,  .data = "\x72\x00\x00\x00\x00" },
+    { .size = 5,  .data = "\x73\x00\x80\x00\x00" },
+    { .size = 5,  .data = "\x76\x00\x00\x00\x00" },
+    { .size = 5,  .data = "\x77\x00\x80\x00\x00" },
+    // 0x70, 0x71, 0x74, 0x75 inline DRC mixer:
+    // no inline DRC inmix
+    { .size = 5,  .data = "\x70\x00\x80\x00\x00" },
+    { .size = 5,  .data = "\x71\x00\x00\x00\x00" },
+    { .size = 5,  .data = "\x74\x00\x80\x00\x00" },
+    { .size = 5,  .data = "\x75\x00\x00\x00\x00" },
+    // 0x56, 0x57 Output scale
+    { .size = 5,  .data = "\x56\x00\x80\x00\x00" },
+    { .size = 5,  .data = "\x57\x00\x02\x00\x00" },
+    // 0x3B, 0x3c
+    { .size = 9,  .data = "\x3B\x00\x08\x00\x00\x00\x78\x00\x00" },
+    { .size = 9,  .data = "\x3C\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
+    { .size = 9,  .data = "\x3E\x00\x08\x00\x00\x00\x78\x00\x00" },
+    { .size = 9,  .data = "\x3F\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
+    { .size = 9,  .data = "\x40\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
+    { .size = 9,  .data = "\x43\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
+    // 0x51, 0x52: output mixer
+    { .size = 9,  .data = "\x51\x00\x80\x00\x00\x00\x00\x00\x00" },
+    { .size = 9,  .data = "\x52\x00\x80\x00\x00\x00\x00\x00\x00" },
+    // PEQ defaults
+    { .size = 21,  .data = "\x29\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x2A\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x2B\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x2C\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x2D\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x2E\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x2F\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x30\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x31\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x32\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x33\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x34\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x35\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x36\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x58\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x59\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x5C\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x5D\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x5E\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x5F\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x5A\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+    { .size = 21,  .data = "\x5B\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+};
+
+
+#endif  /* _TAS5713_H */
diff -Nur linux-3.18.10/sound/soc/codecs/wm8804.c linux-rpi/sound/soc/codecs/wm8804.c
--- linux-3.18.10/sound/soc/codecs/wm8804.c	2015-03-24 02:05:12.000000000 +0100
+++ linux-rpi/sound/soc/codecs/wm8804.c	2015-03-26 11:47:03.752246937 +0100
@@ -278,6 +278,7 @@
 		blen = 0x1;
 		break;
 	case 24:
+	case 32:
 		blen = 0x2;
 		break;
 	default:
@@ -624,7 +625,7 @@
 };
 
 #define WM8804_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
-			SNDRV_PCM_FMTBIT_S24_LE)
+			SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
 
 #define WM8804_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 		      SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \
@@ -655,7 +656,7 @@
 	.probe = wm8804_probe,
 	.remove = wm8804_remove,
 	.set_bias_level = wm8804_set_bias_level,
-	.idle_bias_off = true,
+	.idle_bias_off = false,
 
 	.controls = wm8804_snd_controls,
 	.num_controls = ARRAY_SIZE(wm8804_snd_controls),