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Commit 89933dee authored by Neil Jones's avatar Neil Jones Committed by Mark Brown
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ASoC: Add support for the WM8727 DAC. 



Add support for the Wolfson Microelectronics WM8727 DAC, this is a simple
non-configurable DAC.

Signed-off-by: default avatarNeil Jones <neil.jones@imgtec.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 0f83d639

sound/soc/codecs/Kconfig

+4 −0
Original line number Original line Diff line number Diff line
@@ -40,6 +40,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_WM8523 if I2C

	select SND_SOC_WM8523 if I2C

	select SND_SOC_WM8580 if I2C

	select SND_SOC_WM8580 if I2C

	select SND_SOC_WM8711 if SND_SOC_I2C_AND_SPI

	select SND_SOC_WM8711 if SND_SOC_I2C_AND_SPI

	select SND_SOC_WM8727

	select SND_SOC_WM8728 if SND_SOC_I2C_AND_SPI

	select SND_SOC_WM8728 if SND_SOC_I2C_AND_SPI

	select SND_SOC_WM8731 if SND_SOC_I2C_AND_SPI

	select SND_SOC_WM8731 if SND_SOC_I2C_AND_SPI

	select SND_SOC_WM8750 if SND_SOC_I2C_AND_SPI

	select SND_SOC_WM8750 if SND_SOC_I2C_AND_SPI
@@ -174,6 +175,9 @@ config SND_SOC_WM8580 
config SND_SOC_WM8711

config SND_SOC_WM8711

	tristate

	tristate





config SND_SOC_WM8727

	tristate



config SND_SOC_WM8728

config SND_SOC_WM8728

	tristate

	tristate

sound/soc/codecs/Makefile

+2 −0
Original line number Original line Diff line number Diff line
@@ -27,6 +27,7 @@ snd-soc-wm8510-objs := wm8510.o 
snd-soc-wm8523-objs := wm8523.o

snd-soc-wm8523-objs := wm8523.o

snd-soc-wm8580-objs := wm8580.o

snd-soc-wm8580-objs := wm8580.o

snd-soc-wm8711-objs := wm8711.o

snd-soc-wm8711-objs := wm8711.o

snd-soc-wm8727-objs := wm8727.o

snd-soc-wm8728-objs := wm8728.o

snd-soc-wm8728-objs := wm8728.o

snd-soc-wm8731-objs := wm8731.o

snd-soc-wm8731-objs := wm8731.o

snd-soc-wm8750-objs := wm8750.o

snd-soc-wm8750-objs := wm8750.o
@@ -81,6 +82,7 @@ obj-$(CONFIG_SND_SOC_WM8510) += snd-soc-wm8510.o 
obj-$(CONFIG_SND_SOC_WM8523)	+= snd-soc-wm8523.o

obj-$(CONFIG_SND_SOC_WM8523)	+= snd-soc-wm8523.o

obj-$(CONFIG_SND_SOC_WM8580)	+= snd-soc-wm8580.o

obj-$(CONFIG_SND_SOC_WM8580)	+= snd-soc-wm8580.o

obj-$(CONFIG_SND_SOC_WM8711)	+= snd-soc-wm8711.o

obj-$(CONFIG_SND_SOC_WM8711)	+= snd-soc-wm8711.o

obj-$(CONFIG_SND_SOC_WM8727)	+= snd-soc-wm8727.o

obj-$(CONFIG_SND_SOC_WM8728)	+= snd-soc-wm8728.o

obj-$(CONFIG_SND_SOC_WM8728)	+= snd-soc-wm8728.o

obj-$(CONFIG_SND_SOC_WM8731)	+= snd-soc-wm8731.o

obj-$(CONFIG_SND_SOC_WM8731)	+= snd-soc-wm8731.o

obj-$(CONFIG_SND_SOC_WM8750)	+= snd-soc-wm8750.o

obj-$(CONFIG_SND_SOC_WM8750)	+= snd-soc-wm8750.o

sound/soc/codecs/wm8727.c

0 → 100644
+143 −0
Original line number Original line Diff line number Diff line 
/*

 * wm8727.c

 *

 *  Created on: 15-Oct-2009

 *      Author: neil.jones@imgtec.com

 *

 * Copyright (C) 2009 Imagination Technologies 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.

 */



#include <linux/init.h>

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/device.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/ac97_codec.h>

#include <sound/initval.h>

#include <sound/soc.h>



#include "wm8727.h"

/*

 * Note this is a simple chip with no configuration interface, sample rate is

 * determined automatically by examining the Master clock and Bit clock ratios

 */

#define WM8727_RATES  (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\

			SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\

			SNDRV_PCM_RATE_192000)





struct snd_soc_dai wm8727_dai = {

	.name = "WM8727",

	.playback = {

		.stream_name = "Playback",

		.channels_min = 2,

		.channels_max = 2,

		.rates = WM8727_RATES,

		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,

		},

};

EXPORT_SYMBOL_GPL(wm8727_dai);



static int wm8727_soc_probe(struct platform_device *pdev)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	struct snd_soc_codec *codec;

	int ret = 0;



	codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);

	if (codec == NULL)

		return -ENOMEM;

	mutex_init(&codec->mutex);

	codec->name = "WM8727";

	codec->owner = THIS_MODULE;

	codec->dai = &wm8727_dai;

	codec->num_dai = 1;

	socdev->card->codec = codec;

	INIT_LIST_HEAD(&codec->dapm_widgets);

	INIT_LIST_HEAD(&codec->dapm_paths);



	/* register pcms */

	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);

	if (ret < 0) {

		printk(KERN_ERR "wm8727: failed to create pcms\n");

		goto pcm_err;

	}

	/* register card */

	ret = snd_soc_init_card(socdev);

	if (ret < 0) {

		printk(KERN_ERR "wm8727: failed to register card\n");

		goto register_err;

	}



	return ret;



register_err:

	snd_soc_free_pcms(socdev);

pcm_err:

	kfree(socdev->card->codec);

	socdev->card->codec = NULL;

	return ret;

}



static int wm8727_soc_remove(struct platform_device *pdev)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	struct snd_soc_codec *codec = socdev->card->codec;



	if (codec == NULL)

		return 0;

	snd_soc_free_pcms(socdev);

	kfree(codec);

	return 0;

}



struct snd_soc_codec_device soc_codec_dev_wm8727 = {

	.probe = 	wm8727_soc_probe,

	.remove = 	wm8727_soc_remove,

};

EXPORT_SYMBOL_GPL(soc_codec_dev_wm8727);





static __devinit int wm8727_platform_probe(struct platform_device *pdev)

{

	wm8727_dai.dev = &pdev->dev;

	return snd_soc_register_dai(&wm8727_dai);

}



static int __devexit wm8727_platform_remove(struct platform_device *pdev)

{

	snd_soc_unregister_dai(&wm8727_dai);

	return 0;

}



struct platform_driver wm8727_codec_driver = {

	.driver = {

			.name = "wm8727-codec",

			.owner = THIS_MODULE,

	},



	.probe = wm8727_platform_probe,

	.remove = __devexit_p(wm8727_platform_remove),

};



static int __init wm8727_init(void)

{

	return platform_driver_register(&wm8727_codec_driver);

}

module_init(wm8727_init);



static void __exit wm8727_exit(void)

{

	platform_driver_unregister(&wm8727_codec_driver);

}

module_exit(wm8727_exit);



MODULE_DESCRIPTION("ASoC wm8727 driver");

MODULE_AUTHOR("Neil Jones");

MODULE_LICENSE("GPL");

sound/soc/codecs/wm8727.h

0 → 100644
+21 −0
Original line number Original line Diff line number Diff line 
/*

 * wm8727.h

 *

 *  Created on: 15-Oct-2009

 *      Author: neil.jones@imgtec.com

 *

 * Copyright (C) 2009 Imagination Technologies 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.

 */



#ifndef WM8727_H_

#define WM8727_H_



extern struct snd_soc_dai wm8727_dai;

extern struct snd_soc_codec_device soc_codec_dev_wm8727;



#endif /* WM8727_H_ */