sync raspberry pi patch set

Enable CMA and CMA_DMA for RPI.
Make ENDIAN Symbols visible.
Set CMA to 64 MB.
Add MMAP I2S enable patch.

target/arm/bcm28xx/patches/3.18.8/0002-allow-to-control-volume-for-each-channel.patch

@@ -1,26 +0,0 @@
-From 05ca0b1b73f368564aef8cc4763e96a218cfefeb Mon Sep 17 00:00:00 2001
-From: Waldemar Brodkorb <wbrodkorb@conet.de>
-Date: Mon, 2 Feb 2015 09:51:56 +0100
-Subject: [PATCH 2/2] allow to control volume for each channel
-
-Signed-off-by: Waldemar Brodkorb <wbrodkorb@conet.de>
----
- sound/arm/bcm2835-ctl.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/sound/arm/bcm2835-ctl.c b/sound/arm/bcm2835-ctl.c
-index aad905f..12e77f5 100755
---- a/sound/arm/bcm2835-ctl.c
-+++ b/sound/arm/bcm2835-ctl.c
-@@ -45,7 +45,7 @@ static int snd_bcm2835_ctl_info(struct snd_kcontrol *kcontrol,
- 	audio_info(" ... IN\n");
- 	if (kcontrol->private_value == PCM_PLAYBACK_VOLUME) {
- 		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
--		uinfo->count = 1;
-+		uinfo->count = 2;
- 		uinfo->value.integer.min = CTRL_VOL_MIN;
- 		uinfo->value.integer.max = CTRL_VOL_MAX;      /* 2303 */
- 	} else if (kcontrol->private_value == PCM_PLAYBACK_MUTE) {
--- 
-1.9.1
-

target/arm/bcm28xx/patches/3.18.8/0002-enable-MMAP-by-default-allow-overide-via-use_mmap.patch

@@ -0,0 +1,37 @@
+diff -Nur linux-3.18.6.orig/sound/soc/bcm/bcm2708-i2s.c linux-3.18.6/sound/soc/bcm/bcm2708-i2s.c
+--- linux-3.18.6.orig/sound/soc/bcm/bcm2708-i2s.c	2015-02-12 12:00:42.809186343 +0100
++++ linux-3.18.6/sound/soc/bcm/bcm2708-i2s.c	2015-02-12 13:35:35.929213859 +0100
+@@ -171,6 +171,11 @@
+ /* I2S pin configuration */
+ static int bcm2708_i2s_gpio=BCM2708_I2S_GPIO_AUTO;
+ 
++static bool use_mmap = 1;
++module_param(use_mmap, bool, S_IRUGO);
++MODULE_PARM_DESC(use_mmap, "Use MMAP");
++
++
+ /* General device struct */
+ struct bcm2708_i2s_dev {
+ 	struct device				*dev;
+@@ -874,7 +879,7 @@
+ 	.name		= "bcm2708-i2s-comp",
+ };
+ 
+-static const struct snd_pcm_hardware bcm2708_pcm_hardware = {
++static struct snd_pcm_hardware bcm2708_pcm_hardware = {
+ 	.info			= SNDRV_PCM_INFO_INTERLEAVED |
+ 				  SNDRV_PCM_INFO_JOINT_DUPLEX,
+ 	.formats		= SNDRV_PCM_FMTBIT_S16_LE |
+@@ -966,6 +971,12 @@
+ 		return ret;
+ 	}
+ 
++	if (use_mmap) {
++		printk("Enable ALSA MMAP support for I2S\n");
++		bcm2708_pcm_hardware.info |= SNDRV_PCM_INFO_MMAP;
++		bcm2708_pcm_hardware.info |= SNDRV_PCM_INFO_MMAP_VALID;
++	}
++
+ 	ret = snd_dmaengine_pcm_register(&pdev->dev,
+ 				&bcm2708_dmaengine_pcm_config,
+ 				SND_DMAENGINE_PCM_FLAG_COMPAT);

target/config/Config.in.endian.choice

@@ -5,19 +5,19 @@ choice ADK_TARGET_ENDIAN_MODE
 prompt "Endianess"
 depends on ADK_TARGET_ARCH_SH || ADK_TARGET_ARCH_MIPS || ADK_TARGET_ARCH_MICROBLAZE \
 	|| ADK_TARGET_ARCH_MIPS64 || ADK_TARGET_ARCH_ARC || ADK_TARGET_ARCH_ARM || ADK_TARGET_ARCH_C6X
-depends on !ADK_TARGET_SYSTEM_MIKROTIK_RB532
-depends on !ADK_TARGET_SYSTEM_DRAGINO_MS14S
-depends on !ADK_TARGET_SYSTEM_LEMOTE_YEELONG
-depends on !ADK_TARGET_SYSTEM_RASPBERRY_PI
-depends on !ADK_TARGET_SYSTEM_RASPBERRY_PI2
-depends on !ADK_TARGET_SYSTEM_SOLIDRUN_IMX6
-depends on !ADK_TARGET_SYSTEM_QEMU_ARM
-depends on !ADK_TARGET_SYSTEM_LINKSYS_NSLU2
 
 config ADK_TARGET_LITTLE_ENDIAN
 	bool "Little endian"
+	depends on !ADK_TARGET_SYSTEM_DRAGINO_MS14S
+	depends on !ADK_TARGET_SYSTEM_LINKSYS_NSLU2
 
 config ADK_TARGET_BIG_ENDIAN
 	bool "Big endian"
-
+	depends on !ADK_TARGET_SYSTEM_MIKROTIK_RB532
+	depends on !ADK_TARGET_SYSTEM_LEMOTE_YEELONG
+	depends on !ADK_TARGET_SYSTEM_RASPBERRY_PI
+	depends on !ADK_TARGET_SYSTEM_RASPBERRY_PI2
+	depends on !ADK_TARGET_SYSTEM_SOLIDRUN_IMX6
+	depends on !ADK_TARGET_SYSTEM_QEMU_ARM
+	
 endchoice

target/linux/config/Config.in.dma

@@ -4,6 +4,7 @@ config ADK_KERNEL_DMADEVICES
 config ADK_KERNEL_DMA_BCM2708
         bool
         select ADK_KERNEL_DMADEVICES
+	select ADK_KERNEL_BCM_VC_CMA
 	depends on ADK_TARGET_BOARD_BCM28XX
 	default y if ADK_TARGET_BOARD_BCM28XX
 	default n
@@ -23,8 +24,12 @@ config ADK_KERNEL_CMA
 
 config ADK_KERNEL_CMA_SIZE_MBYTES
 	int
-	default 256
+	default 64
 
 config ADK_KERNEL_DMA_CMA
+	bool
 	select ADK_KERNEL_CMA
+
+config ADK_KERNEL_BCM_VC_CMA
 	bool
+	select ADK_KERNEL_DMA_CMA