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Commit a195b51b authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Mark Brown
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ASoC: IMote2 ASoC Support 



This patch adds the ASoC side of the board support for the Crossbow
IMB400 daughter board.

Thanks to Crossbow for considerable assistance.

Signed-off-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent ee8f6894

sound/soc/pxa/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -134,3 +134,12 @@ config SND_PXA2XX_SOC_MIOA701 
        help

          Say Y if you want to add support for SoC audio on the

          MIO A701.



config SND_PXA2XX_SOC_IMOTE2

       tristate "SoC Audio support for IMote 2"

       depends on SND_PXA2XX_SOC && MACH_INTELMOTE2

       select SND_PXA2XX_SOC_I2S

       select SND_SOC_WM8940

       help

         Say Y if you want to add support for SoC audio on the

	 IMote 2.

sound/soc/pxa/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ snd-soc-palm27x-objs := palm27x.o 
snd-soc-zylonite-objs := zylonite.o

snd-soc-magician-objs := magician.o

snd-soc-mioa701-objs := mioa701_wm9713.o

snd-soc-imote2-objs := imote2.o



obj-$(CONFIG_SND_PXA2XX_SOC_CORGI) += snd-soc-corgi.o

obj-$(CONFIG_SND_PXA2XX_SOC_POODLE) += snd-soc-poodle.o
@@ -35,3 +36,4 @@ obj-$(CONFIG_SND_PXA2XX_SOC_PALM27X) += snd-soc-palm27x.o 
obj-$(CONFIG_SND_PXA2XX_SOC_MAGICIAN) += snd-soc-magician.o

obj-$(CONFIG_SND_PXA2XX_SOC_MIOA701) += snd-soc-mioa701.o

obj-$(CONFIG_SND_SOC_ZYLONITE) += snd-soc-zylonite.o

obj-$(CONFIG_SND_PXA2XX_SOC_IMOTE2) += snd-soc-imote2.o

sound/soc/pxa/imote2.c

0 → 100644
+114 −0
Original line number Diff line number Diff line 


#include <linux/module.h>

#include <sound/soc.h>



#include <asm/mach-types.h>



#include "../codecs/wm8940.h"

#include "pxa2xx-i2s.h"

#include "pxa2xx-pcm.h"



static int imote2_asoc_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->dai->codec_dai;

	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;

	unsigned int clk = 0;

	int ret;



	switch (params_rate(params)) {

	case 8000:

	case 16000:

	case 48000:

	case 96000:

		clk = 12288000;

		break;

	case 11025:

	case 22050:

	case 44100:

		clk = 11289600;

		break;

	}



	/* set codec DAI configuration */

	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S

				  | SND_SOC_DAIFMT_NB_NF

				  | SND_SOC_DAIFMT_CBS_CFS);

	if (ret < 0)

		return ret;



	/* CPU should be clock master */

	ret = snd_soc_dai_set_fmt(cpu_dai,  SND_SOC_DAIFMT_I2S

				  | SND_SOC_DAIFMT_NB_NF

				  | SND_SOC_DAIFMT_CBS_CFS);

	if (ret < 0)

		return ret;



	ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,

				     SND_SOC_CLOCK_IN);

	if (ret < 0)

		return ret;



	/* set the I2S system clock as input (unused) */

	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk,

		SND_SOC_CLOCK_OUT);



	return ret;

}



static struct snd_soc_ops imote2_asoc_ops = {

	.hw_params = imote2_asoc_hw_params,

};



static struct snd_soc_dai_link imote2_dai = {

	.name = "WM8940",

	.stream_name = "WM8940",

	.cpu_dai = &pxa_i2s_dai,

	.codec_dai = &wm8940_dai,

	.ops = &imote2_asoc_ops,

};



static struct snd_soc_card snd_soc_imote2 = {

	.name = "Imote2",

	.platform = &pxa2xx_soc_platform,

	.dai_link = &imote2_dai,

	.num_links = 1,

};



static struct snd_soc_device imote2_snd_devdata = {

	.card = &snd_soc_imote2,

	.codec_dev = &soc_codec_dev_wm8940,

};



static struct platform_device *imote2_snd_device;



static int __init imote2_asoc_init(void)

{

	int ret;



	if (!machine_is_intelmote2())

		return -ENODEV;

	imote2_snd_device = platform_device_alloc("soc-audio", -1);

	if (!imote2_snd_device)

		return -ENOMEM;



	platform_set_drvdata(imote2_snd_device, &imote2_snd_devdata);

	imote2_snd_devdata.dev = &imote2_snd_device->dev;

	ret = platform_device_add(imote2_snd_device);

	if (ret)

		platform_device_put(imote2_snd_device);



	return ret;

}

module_init(imote2_asoc_init);



static void __exit imote2_asoc_exit(void)

{

	platform_device_unregister(imote2_snd_device);

}

module_exit(imote2_asoc_exit);



MODULE_AUTHOR("Jonathan Cameron");

MODULE_DESCRIPTION("ALSA SoC Imote 2");

MODULE_LICENSE("GPL");