sound/soc/pxa/corgi.c - kernel/msm-4.9 - Gitiles

 /*
  * corgi.c  --  SoC audio for Corgi
  *
  * Copyright 2005 Wolfson Microelectronics PLC.
  * Copyright 2005 Openedhand Ltd.
  *
  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
  *          Richard Purdie <richard@openedhand.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.
  */

 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/timer.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>

 #include <asm/mach-types.h>
 #include <mach/corgi.h>
 #include <mach/audio.h>

 #include "../codecs/wm8731.h"
 #include "pxa2xx-i2s.h"

 #define CORGI_HP        0
 #define CORGI_MIC       1
 #define CORGI_LINE      2
 #define CORGI_HEADSET   3
 #define CORGI_HP_OFF    4
 #define CORGI_SPK_ON    0
 #define CORGI_SPK_OFF   1

  /* audio clock in Hz - rounded from 12.235MHz */
 #define CORGI_AUDIO_CLOCK 12288000

 static int corgi_jack_func;
 static int corgi_spk_func;

 static void corgi_ext_control(struct snd_soc_dapm_context *dapm)
 {
 	snd_soc_dapm_mutex_lock(dapm);

 	/* set up jack connection */
 	switch (corgi_jack_func) {
 	case CORGI_HP:
 		/* set = unmute headphone */
 		gpio_set_value(CORGI_GPIO_MUTE_L, 1);
 		gpio_set_value(CORGI_GPIO_MUTE_R, 1);
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 		break;
 	case CORGI_MIC:
 		/* reset = mute headphone */
 		gpio_set_value(CORGI_GPIO_MUTE_L, 0);
 		gpio_set_value(CORGI_GPIO_MUTE_R, 0);
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 		break;
 	case CORGI_LINE:
 		gpio_set_value(CORGI_GPIO_MUTE_L, 0);
 		gpio_set_value(CORGI_GPIO_MUTE_R, 0);
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 		break;
 	case CORGI_HEADSET:
 		gpio_set_value(CORGI_GPIO_MUTE_L, 0);
 		gpio_set_value(CORGI_GPIO_MUTE_R, 1);
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
 		break;
 	}

 	if (corgi_spk_func == CORGI_SPK_ON)
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
 	else
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");

 	/* signal a DAPM event */
 	snd_soc_dapm_sync_unlocked(dapm);

 	snd_soc_dapm_mutex_unlock(dapm);
 }

 static int corgi_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;

 	/* check the jack status at stream startup */
 	corgi_ext_control(&rtd->card->dapm);

 	return 0;
 }

 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
 static void corgi_shutdown(struct snd_pcm_substream *substream)
 {
 	/* set = unmute headphone */
 	gpio_set_value(CORGI_GPIO_MUTE_L, 1);
 	gpio_set_value(CORGI_GPIO_MUTE_R, 1);
 }

 static int corgi_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;
 	unsigned int clk = 0;
 	int ret = 0;

 	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 the codec system clock for DAC and ADC */
 	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, 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, 0,
 		SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static struct snd_soc_ops corgi_ops = {
 	.startup = corgi_startup,
 	.hw_params = corgi_hw_params,
 	.shutdown = corgi_shutdown,
 };

 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
 	ucontrol->value.integer.value[0] = corgi_jack_func;
 	return 0;
 }

 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);

 	if (corgi_jack_func == ucontrol->value.integer.value[0])
 		return 0;

 	corgi_jack_func = ucontrol->value.integer.value[0];
 	corgi_ext_control(&card->dapm);
 	return 1;
 }

 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
 	ucontrol->value.integer.value[0] = corgi_spk_func;
 	return 0;
 }

 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);

 	if (corgi_spk_func == ucontrol->value.integer.value[0])
 		return 0;

 	corgi_spk_func = ucontrol->value.integer.value[0];
 	corgi_ext_control(&card->dapm);
 	return 1;
 }

 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *k, int event)
 {
 	gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
 	return 0;
 }

 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *k, int event)
 {
 	gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
 	return 0;
 }

 /* corgi machine dapm widgets */
 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
 SND_SOC_DAPM_LINE("Line Jack", NULL),
 SND_SOC_DAPM_HP("Headset Jack", NULL),
 };

 /* Corgi machine audio map (connections to the codec pins) */
 static const struct snd_soc_dapm_route corgi_audio_map[] = {

 	/* headset Jack  - in = micin, out = LHPOUT*/
 	{"Headset Jack", NULL, "LHPOUT"},

 	/* headphone connected to LHPOUT1, RHPOUT1 */
 	{"Headphone Jack", NULL, "LHPOUT"},
 	{"Headphone Jack", NULL, "RHPOUT"},

 	/* speaker connected to LOUT, ROUT */
 	{"Ext Spk", NULL, "ROUT"},
 	{"Ext Spk", NULL, "LOUT"},

 	/* mic is connected to MICIN (via right channel of headphone jack) */
 	{"MICIN", NULL, "Mic Jack"},

 	/* Same as the above but no mic bias for line signals */
 	{"MICIN", NULL, "Line Jack"},
 };

 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 	"Off"};
 static const char *spk_function[] = {"On", "Off"};
 static const struct soc_enum corgi_enum[] = {
 	SOC_ENUM_SINGLE_EXT(5, jack_function),
 	SOC_ENUM_SINGLE_EXT(2, spk_function),
 };

 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
 	SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
 		corgi_set_jack),
 	SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
 		corgi_set_spk),
 };

 /*
  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
  */
 static int corgi_wm8731_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;

 	snd_soc_dapm_nc_pin(dapm, "LLINEIN");
 	snd_soc_dapm_nc_pin(dapm, "RLINEIN");

 	return 0;
 }

 /* corgi digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link corgi_dai = {
 	.name = "WM8731",
 	.stream_name = "WM8731",
 	.cpu_dai_name = "pxa2xx-i2s",
 	.codec_dai_name = "wm8731-hifi",
 	.platform_name = "pxa-pcm-audio",
 	.codec_name = "wm8731.0-001b",
 	.init = corgi_wm8731_init,
 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 		   SND_SOC_DAIFMT_CBS_CFS,
 	.ops = &corgi_ops,
 };

 /* corgi audio machine driver */
 static struct snd_soc_card corgi = {
 	.name = "Corgi",
 	.owner = THIS_MODULE,
 	.dai_link = &corgi_dai,
 	.num_links = 1,

 	.controls = wm8731_corgi_controls,
 	.num_controls = ARRAY_SIZE(wm8731_corgi_controls),
 	.dapm_widgets = wm8731_dapm_widgets,
 	.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
 	.dapm_routes = corgi_audio_map,
 	.num_dapm_routes = ARRAY_SIZE(corgi_audio_map),
 };

 static int corgi_probe(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = &corgi;
 	int ret;

 	card->dev = &pdev->dev;

 	ret = snd_soc_register_card(card);
 	if (ret)
 		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 			ret);
 	return ret;
 }

 static int corgi_remove(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = platform_get_drvdata(pdev);

 	snd_soc_unregister_card(card);
 	return 0;
 }

 static struct platform_driver corgi_driver = {
 	.driver		= {
 		.name	= "corgi-audio",
 		.pm     = &snd_soc_pm_ops,
 	},
 	.probe		= corgi_probe,
 	.remove		= corgi_remove,
 };

 module_platform_driver(corgi_driver);

 /* Module information */
 MODULE_AUTHOR("Richard Purdie");
 MODULE_DESCRIPTION("ALSA SoC Corgi");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:corgi-audio");
	/*
	* corgi.c -- SoC audio for Corgi
	*
	* Copyright 2005 Wolfson Microelectronics PLC.
	* Copyright 2005 Openedhand Ltd.
	*
	* Authors: Liam Girdwood <lrg@slimlogic.co.uk>
	* Richard Purdie <richard@openedhand.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.
	*/

	#include <linux/module.h>
	#include <linux/moduleparam.h>
	#include <linux/timer.h>
	#include <linux/i2c.h>
	#include <linux/interrupt.h>
	#include <linux/platform_device.h>
	#include <linux/gpio.h>
	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/soc.h>

	#include <asm/mach-types.h>
	#include <mach/corgi.h>
	#include <mach/audio.h>

	#include "../codecs/wm8731.h"
	#include "pxa2xx-i2s.h"

	#define CORGI_HP 0
	#define CORGI_MIC 1
	#define CORGI_LINE 2
	#define CORGI_HEADSET 3
	#define CORGI_HP_OFF 4
	#define CORGI_SPK_ON 0
	#define CORGI_SPK_OFF 1

	/* audio clock in Hz - rounded from 12.235MHz */
	#define CORGI_AUDIO_CLOCK 12288000

	static int corgi_jack_func;
	static int corgi_spk_func;

	static void corgi_ext_control(struct snd_soc_dapm_context *dapm)
	{
	snd_soc_dapm_mutex_lock(dapm);

	/* set up jack connection */
	switch (corgi_jack_func) {
	case CORGI_HP:
	/* set = unmute headphone */
	gpio_set_value(CORGI_GPIO_MUTE_L, 1);
	gpio_set_value(CORGI_GPIO_MUTE_R, 1);
	snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
	snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
	snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
	snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
	break;
	case CORGI_MIC:
	/* reset = mute headphone */
	gpio_set_value(CORGI_GPIO_MUTE_L, 0);
	gpio_set_value(CORGI_GPIO_MUTE_R, 0);
	snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
	snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
	snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
	snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
	break;
	case CORGI_LINE:
	gpio_set_value(CORGI_GPIO_MUTE_L, 0);
	gpio_set_value(CORGI_GPIO_MUTE_R, 0);
	snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
	snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
	snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
	snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
	break;
	case CORGI_HEADSET:
	gpio_set_value(CORGI_GPIO_MUTE_L, 0);
	gpio_set_value(CORGI_GPIO_MUTE_R, 1);
	snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
	snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
	snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
	snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
	break;
	}

	if (corgi_spk_func == CORGI_SPK_ON)
	snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
	else
	snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");

	/* signal a DAPM event */
	snd_soc_dapm_sync_unlocked(dapm);

	snd_soc_dapm_mutex_unlock(dapm);
	}

	static int corgi_startup(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	/* check the jack status at stream startup */
	corgi_ext_control(&rtd->card->dapm);

	return 0;
	}

	/* we need to unmute the HP at shutdown as the mute burns power on corgi */
	static void corgi_shutdown(struct snd_pcm_substream *substream)
	{
	/* set = unmute headphone */
	gpio_set_value(CORGI_GPIO_MUTE_L, 1);
	gpio_set_value(CORGI_GPIO_MUTE_R, 1);
	}

	static int corgi_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;
	unsigned int clk = 0;
	int ret = 0;

	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 the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, 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, 0,
	SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	return 0;
	}

	static struct snd_soc_ops corgi_ops = {
	.startup = corgi_startup,
	.hw_params = corgi_hw_params,
	.shutdown = corgi_shutdown,
	};

	static int corgi_get_jack(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	ucontrol->value.integer.value[0] = corgi_jack_func;
	return 0;
	}

	static int corgi_set_jack(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);

	if (corgi_jack_func == ucontrol->value.integer.value[0])
	return 0;

	corgi_jack_func = ucontrol->value.integer.value[0];
	corgi_ext_control(&card->dapm);
	return 1;
	}

	static int corgi_get_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	ucontrol->value.integer.value[0] = corgi_spk_func;
	return 0;
	}

	static int corgi_set_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);

	if (corgi_spk_func == ucontrol->value.integer.value[0])
	return 0;

	corgi_spk_func = ucontrol->value.integer.value[0];
	corgi_ext_control(&card->dapm);
	return 1;
	}

	static int corgi_amp_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
	{
	gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
	return 0;
	}

	static int corgi_mic_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
	{
	gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
	return 0;
	}

	/* corgi machine dapm widgets */
	static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
	SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
	SND_SOC_DAPM_LINE("Line Jack", NULL),
	SND_SOC_DAPM_HP("Headset Jack", NULL),
	};

	/* Corgi machine audio map (connections to the codec pins) */
	static const struct snd_soc_dapm_route corgi_audio_map[] = {

	/* headset Jack - in = micin, out = LHPOUT*/
	{"Headset Jack", NULL, "LHPOUT"},

	/* headphone connected to LHPOUT1, RHPOUT1 */
	{"Headphone Jack", NULL, "LHPOUT"},
	{"Headphone Jack", NULL, "RHPOUT"},

	/* speaker connected to LOUT, ROUT */
	{"Ext Spk", NULL, "ROUT"},
	{"Ext Spk", NULL, "LOUT"},

	/* mic is connected to MICIN (via right channel of headphone jack) */
	{"MICIN", NULL, "Mic Jack"},

	/* Same as the above but no mic bias for line signals */
	{"MICIN", NULL, "Line Jack"},
	};

	static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
	"Off"};
	static const char *spk_function[] = {"On", "Off"};
	static const struct soc_enum corgi_enum[] = {
	SOC_ENUM_SINGLE_EXT(5, jack_function),
	SOC_ENUM_SINGLE_EXT(2, spk_function),
	};

	static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
	SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
	corgi_set_jack),
	SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
	corgi_set_spk),
	};

	/*
	* Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
	*/
	static int corgi_wm8731_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	snd_soc_dapm_nc_pin(dapm, "LLINEIN");
	snd_soc_dapm_nc_pin(dapm, "RLINEIN");

	return 0;
	}

	/* corgi digital audio interface glue - connects codec <--> CPU */
	static struct snd_soc_dai_link corgi_dai = {
	.name = "WM8731",
	.stream_name = "WM8731",
	.cpu_dai_name = "pxa2xx-i2s",
	.codec_dai_name = "wm8731-hifi",
	.platform_name = "pxa-pcm-audio",
	.codec_name = "wm8731.0-001b",
	.init = corgi_wm8731_init,
	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBS_CFS,
	.ops = &corgi_ops,
	};

	/* corgi audio machine driver */
	static struct snd_soc_card corgi = {
	.name = "Corgi",
	.owner = THIS_MODULE,
	.dai_link = &corgi_dai,
	.num_links = 1,

	.controls = wm8731_corgi_controls,
	.num_controls = ARRAY_SIZE(wm8731_corgi_controls),
	.dapm_widgets = wm8731_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
	.dapm_routes = corgi_audio_map,
	.num_dapm_routes = ARRAY_SIZE(corgi_audio_map),
	};

	static int corgi_probe(struct platform_device *pdev)
	{
	struct snd_soc_card *card = &corgi;
	int ret;

	card->dev = &pdev->dev;

	ret = snd_soc_register_card(card);
	if (ret)
	dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
	ret);
	return ret;
	}

	static int corgi_remove(struct platform_device *pdev)
	{
	struct snd_soc_card *card = platform_get_drvdata(pdev);

	snd_soc_unregister_card(card);
	return 0;
	}

	static struct platform_driver corgi_driver = {
	.driver = {
	.name = "corgi-audio",
	.pm = &snd_soc_pm_ops,
	},
	.probe = corgi_probe,
	.remove = corgi_remove,
	};

	module_platform_driver(corgi_driver);

	/* Module information */
	MODULE_AUTHOR("Richard Purdie");
	MODULE_DESCRIPTION("ALSA SoC Corgi");
	MODULE_LICENSE("GPL");
	MODULE_ALIAS("platform:corgi-audio");