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- diff -Nur linux-3.12.37.orig/arch/arm/mach-bcm2708/bcm2708.c linux-3.12.37/arch/arm/mach-bcm2708/bcm2708.c
- --- linux-3.12.37.orig/arch/arm/mach-bcm2708/bcm2708.c 2015-02-18 14:32:14.988546928 +0100
- +++ linux-3.12.37/arch/arm/mach-bcm2708/bcm2708.c 2015-02-18 15:20:32.564560932 +0100
- @@ -769,6 +769,19 @@
- };
- #endif
-
- +#ifdef CONFIG_SND_BCM2708_SOC_RPI_PROTO_MODULE
- +static struct platform_device snd_rpi_proto_device = {
- + .name = "snd-rpi-proto",
- + .id = 0,
- + .num_resources = 0,
- +};
- +static struct i2c_board_info __initdata snd_rpi_proto_i2c_devices[] = {
- + {
- + I2C_BOARD_INFO("wm8731", 0x1a)
- + },
- +};
- +#endif
- +
- int __init bcm_register_device(struct platform_device *pdev)
- {
- int ret;
- @@ -944,6 +957,10 @@
- bcm_register_device(&snd_rpi_iqaudio_dac_device);
- i2c_register_board_info(1, snd_pcm512x_i2c_devices, ARRAY_SIZE(snd_pcm512x_i2c_devices));
- #endif
- +#if defined(CONFIG_SND_BCM2708_SOC_RPI_PROTO) || defined(CONFIG_SND_BCM2708_SOC_RPI_PROTO_MODULE)
- + bcm_register_device(&snd_rpi_proto_device);
- + i2c_register_board_info(1, snd_rpi_proto_i2c_devices, ARRAY_SIZE(snd_rpi_proto_i2c_devices));
- +#endif
-
-
- for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
- diff -Nur linux-3.12.37.orig/sound/soc/bcm/bcm2708-i2s.c linux-3.12.37/sound/soc/bcm/bcm2708-i2s.c
- --- linux-3.12.37.orig/sound/soc/bcm/bcm2708-i2s.c 2015-02-18 14:32:15.128546928 +0100
- +++ linux-3.12.37/sound/soc/bcm/bcm2708-i2s.c 2015-02-18 15:10:07.452557911 +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;
- @@ -870,7 +875,7 @@
- .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 |
- @@ -962,6 +967,11 @@
- return ret;
- }
-
- + if (use_mmap) {
- + 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);
- diff -Nur linux-3.12.37.orig/sound/soc/bcm/Kconfig linux-3.12.37/sound/soc/bcm/Kconfig
- --- linux-3.12.37.orig/sound/soc/bcm/Kconfig 2015-02-18 14:32:15.128546928 +0100
- +++ linux-3.12.37/sound/soc/bcm/Kconfig 2015-02-18 15:18:22.948560306 +0100
- @@ -50,3 +50,11 @@
- select SND_SOC_PCM512x
- help
- Say Y or M if you want to add support for IQaudIO-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 if you want to add support for Audio Codec Board -
- + PROTO (WM8731)
- diff -Nur linux-3.12.37.orig/sound/soc/bcm/Makefile linux-3.12.37/sound/soc/bcm/Makefile
- --- linux-3.12.37.orig/sound/soc/bcm/Makefile 2015-02-18 14:32:15.128546928 +0100
- +++ linux-3.12.37/sound/soc/bcm/Makefile 2015-02-18 15:18:39.484560386 +0100
- @@ -10,6 +10,7 @@
- snd-soc-hifiberry-amp-objs := hifiberry_amp.o
- snd-soc-rpi-dac-objs := rpi-dac.o
- snd-soc-iqaudio-dac-objs := iqaudio-dac.o
- +snd-soc-rpi-proto-objs := rpi-proto.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
- @@ -17,3 +18,4 @@
- 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-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
- +obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
- diff -Nur linux-3.12.37.orig/sound/soc/bcm/rpi-proto.c linux-3.12.37/sound/soc/bcm/rpi-proto.c
- --- linux-3.12.37.orig/sound/soc/bcm/rpi-proto.c 1970-01-01 01:00:00.000000000 +0100
- +++ linux-3.12.37/sound/soc/bcm/rpi-proto.c 2015-02-18 15:10:01.164557881 +0100
- @@ -0,0 +1,130 @@
- +/*
- + * 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;
- + 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 struct platform_driver snd_rpi_proto_driver = {
- + .driver = {
- + .name = "snd-rpi-proto",
- + .owner = THIS_MODULE,
- + },
- + .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");
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