sound/soc/omap/sdp3430.c - kernel/msm-4.9 - Gitiles

 /*
  * sdp3430.c  --  SoC audio for TI OMAP3430 SDP
  *
  * Author: Misael Lopez Cruz <x0052729@ti.com>
  *
  * Based on:
  * Author: Steve Sakoman <steve@sakoman.com>
  *
  * 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.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  * 02110-1301 USA
  *
  */

 #include <linux/clk.h>
 #include <linux/platform_device.h>
 #include <linux/i2c/twl.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>
 #include <sound/jack.h>

 #include <asm/mach-types.h>
 #include <mach/hardware.h>
 #include <mach/gpio.h>
 #include <plat/mcbsp.h>

 /* Register descriptions for twl4030 codec part */
 #include <linux/mfd/twl4030-audio.h>

 #include "omap-mcbsp.h"
 #include "omap-pcm.h"

 /* TWL4030 PMBR1 Register */
 #define TWL4030_INTBR_PMBR1		0x0D
 /* TWL4030 PMBR1 Register GPIO6 mux bit */
 #define TWL4030_GPIO6_PWM0_MUTE(value)	(value << 2)

 static struct snd_soc_card snd_soc_sdp3430;

 static int sdp3430_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 ret;

 	/* Set codec DAI configuration */
 	ret = snd_soc_dai_set_fmt(codec_dai,
 				  SND_SOC_DAIFMT_I2S |
 				  SND_SOC_DAIFMT_NB_NF |
 				  SND_SOC_DAIFMT_CBM_CFM);
 	if (ret < 0) {
 		printk(KERN_ERR "can't set codec DAI configuration\n");
 		return ret;
 	}

 	/* Set cpu DAI configuration */
 	ret = snd_soc_dai_set_fmt(cpu_dai,
 				  SND_SOC_DAIFMT_I2S |
 				  SND_SOC_DAIFMT_NB_NF |
 				  SND_SOC_DAIFMT_CBM_CFM);
 	if (ret < 0) {
 		printk(KERN_ERR "can't set cpu DAI configuration\n");
 		return ret;
 	}

 	/* Set the codec system clock for DAC and ADC */
 	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
 					    SND_SOC_CLOCK_IN);
 	if (ret < 0) {
 		printk(KERN_ERR "can't set codec system clock\n");
 		return ret;
 	}

 	return 0;
 }

 static struct snd_soc_ops sdp3430_ops = {
 	.hw_params = sdp3430_hw_params,
 };

 static int sdp3430_hw_voice_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 ret;

 	/* Set codec DAI configuration */
 	ret = snd_soc_dai_set_fmt(codec_dai,
 				SND_SOC_DAIFMT_DSP_A |
 				SND_SOC_DAIFMT_IB_NF |
 				SND_SOC_DAIFMT_CBM_CFM);
 	if (ret) {
 		printk(KERN_ERR "can't set codec DAI configuration\n");
 		return ret;
 	}

 	/* Set cpu DAI configuration */
 	ret = snd_soc_dai_set_fmt(cpu_dai,
 				SND_SOC_DAIFMT_DSP_A |
 				SND_SOC_DAIFMT_IB_NF |
 				SND_SOC_DAIFMT_CBM_CFM);
 	if (ret < 0) {
 		printk(KERN_ERR "can't set cpu DAI configuration\n");
 		return ret;
 	}

 	/* Set the codec system clock for DAC and ADC */
 	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
 					    SND_SOC_CLOCK_IN);
 	if (ret < 0) {
 		printk(KERN_ERR "can't set codec system clock\n");
 		return ret;
 	}

 	return 0;
 }

 static struct snd_soc_ops sdp3430_voice_ops = {
 	.hw_params = sdp3430_hw_voice_params,
 };

 /* Headset jack */
 static struct snd_soc_jack hs_jack;

 /* Headset jack detection DAPM pins */
 static struct snd_soc_jack_pin hs_jack_pins[] = {
 	{
 		.pin = "Headset Mic",
 		.mask = SND_JACK_MICROPHONE,
 	},
 	{
 		.pin = "Headset Stereophone",
 		.mask = SND_JACK_HEADPHONE,
 	},
 };

 /* Headset jack detection gpios */
 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 	{
 		.gpio = (OMAP_MAX_GPIO_LINES + 2),
 		.name = "hsdet-gpio",
 		.report = SND_JACK_HEADSET,
 		.debounce_time = 200,
 	},
 };

 /* SDP3430 machine DAPM */
 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
 	SND_SOC_DAPM_MIC("Ext Mic", NULL),
 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 	SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 };

 static const struct snd_soc_dapm_route audio_map[] = {
 	/* External Mics: MAINMIC, SUBMIC with bias*/
 	{"MAINMIC", NULL, "Mic Bias 1"},
 	{"SUBMIC", NULL, "Mic Bias 2"},
 	{"Mic Bias 1", NULL, "Ext Mic"},
 	{"Mic Bias 2", NULL, "Ext Mic"},

 	/* External Speakers: HFL, HFR */
 	{"Ext Spk", NULL, "HFL"},
 	{"Ext Spk", NULL, "HFR"},

 	/* Headset Mic: HSMIC with bias */
 	{"HSMIC", NULL, "Headset Mic Bias"},
 	{"Headset Mic Bias", NULL, "Headset Mic"},

 	/* Headset Stereophone (Headphone): HSOL, HSOR */
 	{"Headset Stereophone", NULL, "HSOL"},
 	{"Headset Stereophone", NULL, "HSOR"},
 };

 static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;
 	int ret;

 	/* Add SDP3430 specific widgets */
 	ret = snd_soc_dapm_new_controls(dapm, sdp3430_twl4030_dapm_widgets,
 				ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
 	if (ret)
 		return ret;

 	/* Set up SDP3430 specific audio path audio_map */
 	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));

 	/* SDP3430 connected pins */
 	snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 	snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 	snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 	snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");

 	/* TWL4030 not connected pins */
 	snd_soc_dapm_nc_pin(dapm, "AUXL");
 	snd_soc_dapm_nc_pin(dapm, "AUXR");
 	snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
 	snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
 	snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");

 	snd_soc_dapm_nc_pin(dapm, "OUTL");
 	snd_soc_dapm_nc_pin(dapm, "OUTR");
 	snd_soc_dapm_nc_pin(dapm, "EARPIECE");
 	snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
 	snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
 	snd_soc_dapm_nc_pin(dapm, "CARKITL");
 	snd_soc_dapm_nc_pin(dapm, "CARKITR");

 	ret = snd_soc_dapm_sync(dapm);
 	if (ret)
 		return ret;

 	/* Headset jack detection */
 	ret = snd_soc_jack_new(codec, "Headset Jack",
 				SND_JACK_HEADSET, &hs_jack);
 	if (ret)
 		return ret;

 	ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 				hs_jack_pins);
 	if (ret)
 		return ret;

 	ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 				hs_jack_gpios);

 	return ret;
 }

 static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
 	unsigned short reg;

 	/* Enable voice interface */
 	reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
 	reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
 	codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);

 	return 0;
 }


 /* Digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link sdp3430_dai[] = {
 	{
 		.name = "TWL4030 I2S",
 		.stream_name = "TWL4030 Audio",
 		.cpu_dai_name = "omap-mcbsp-dai.1",
 		.codec_dai_name = "twl4030-hifi",
 		.platform_name = "omap-pcm-audio",
 		.codec_name = "twl4030-codec",
 		.init = sdp3430_twl4030_init,
 		.ops = &sdp3430_ops,
 	},
 	{
 		.name = "TWL4030 PCM",
 		.stream_name = "TWL4030 Voice",
 		.cpu_dai_name = "omap-mcbsp-dai.2",
 		.codec_dai_name = "twl4030-voice",
 		.platform_name = "omap-pcm-audio",
 		.codec_name = "twl4030-codec",
 		.init = sdp3430_twl4030_voice_init,
 		.ops = &sdp3430_voice_ops,
 	},
 };

 /* Audio machine driver */
 static struct snd_soc_card snd_soc_sdp3430 = {
 	.name = "SDP3430",
 	.dai_link = sdp3430_dai,
 	.num_links = ARRAY_SIZE(sdp3430_dai),
 };

 static struct platform_device *sdp3430_snd_device;

 static int __init sdp3430_soc_init(void)
 {
 	int ret;
 	u8 pin_mux;

 	if (!machine_is_omap_3430sdp())
 		return -ENODEV;
 	printk(KERN_INFO "SDP3430 SoC init\n");

 	sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
 	if (!sdp3430_snd_device) {
 		printk(KERN_ERR "Platform device allocation failed\n");
 		return -ENOMEM;
 	}

 	platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);

 	/* Set TWL4030 GPIO6 as EXTMUTE signal */
 	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
 						TWL4030_INTBR_PMBR1);
 	pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
 	pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
 	twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
 						TWL4030_INTBR_PMBR1);

 	ret = platform_device_add(sdp3430_snd_device);
 	if (ret)
 		goto err1;

 	return 0;

 err1:
 	printk(KERN_ERR "Unable to add platform device\n");
 	platform_device_put(sdp3430_snd_device);

 	return ret;
 }
 module_init(sdp3430_soc_init);

 static void __exit sdp3430_soc_exit(void)
 {
 	snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 				hs_jack_gpios);

 	platform_device_unregister(sdp3430_snd_device);
 }
 module_exit(sdp3430_soc_exit);

 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 MODULE_DESCRIPTION("ALSA SoC SDP3430");
 MODULE_LICENSE("GPL");
	/*
	* sdp3430.c -- SoC audio for TI OMAP3430 SDP
	*
	* Author: Misael Lopez Cruz <x0052729@ti.com>
	*
	* Based on:
	* Author: Steve Sakoman <steve@sakoman.com>
	*
	* 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.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	* 02110-1301 USA
	*
	*/

	#include <linux/clk.h>
	#include <linux/platform_device.h>
	#include <linux/i2c/twl.h>
	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/soc.h>
	#include <sound/jack.h>

	#include <asm/mach-types.h>
	#include <mach/hardware.h>
	#include <mach/gpio.h>
	#include <plat/mcbsp.h>

	/* Register descriptions for twl4030 codec part */
	#include <linux/mfd/twl4030-audio.h>

	#include "omap-mcbsp.h"
	#include "omap-pcm.h"

	/* TWL4030 PMBR1 Register */
	#define TWL4030_INTBR_PMBR1 0x0D
	/* TWL4030 PMBR1 Register GPIO6 mux bit */
	#define TWL4030_GPIO6_PWM0_MUTE(value) (value << 2)

	static struct snd_soc_card snd_soc_sdp3430;

	static int sdp3430_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 ret;

	/* Set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai,
	SND_SOC_DAIFMT_I2S \|
	SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0) {
	printk(KERN_ERR "can't set codec DAI configuration\n");
	return ret;
	}

	/* Set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai,
	SND_SOC_DAIFMT_I2S \|
	SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0) {
	printk(KERN_ERR "can't set cpu DAI configuration\n");
	return ret;
	}

	/* Set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
	SND_SOC_CLOCK_IN);
	if (ret < 0) {
	printk(KERN_ERR "can't set codec system clock\n");
	return ret;
	}

	return 0;
	}

	static struct snd_soc_ops sdp3430_ops = {
	.hw_params = sdp3430_hw_params,
	};

	static int sdp3430_hw_voice_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 ret;

	/* Set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai,
	SND_SOC_DAIFMT_DSP_A \|
	SND_SOC_DAIFMT_IB_NF \|
	SND_SOC_DAIFMT_CBM_CFM);
	if (ret) {
	printk(KERN_ERR "can't set codec DAI configuration\n");
	return ret;
	}

	/* Set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai,
	SND_SOC_DAIFMT_DSP_A \|
	SND_SOC_DAIFMT_IB_NF \|
	SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0) {
	printk(KERN_ERR "can't set cpu DAI configuration\n");
	return ret;
	}

	/* Set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
	SND_SOC_CLOCK_IN);
	if (ret < 0) {
	printk(KERN_ERR "can't set codec system clock\n");
	return ret;
	}

	return 0;
	}

	static struct snd_soc_ops sdp3430_voice_ops = {
	.hw_params = sdp3430_hw_voice_params,
	};

	/* Headset jack */
	static struct snd_soc_jack hs_jack;

	/* Headset jack detection DAPM pins */
	static struct snd_soc_jack_pin hs_jack_pins[] = {
	{
	.pin = "Headset Mic",
	.mask = SND_JACK_MICROPHONE,
	},
	{
	.pin = "Headset Stereophone",
	.mask = SND_JACK_HEADPHONE,
	},
	};

	/* Headset jack detection gpios */
	static struct snd_soc_jack_gpio hs_jack_gpios[] = {
	{
	.gpio = (OMAP_MAX_GPIO_LINES + 2),
	.name = "hsdet-gpio",
	.report = SND_JACK_HEADSET,
	.debounce_time = 200,
	},
	};

	/* SDP3430 machine DAPM */
	static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
	SND_SOC_DAPM_MIC("Ext Mic", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_HP("Headset Stereophone", NULL),
	};

	static const struct snd_soc_dapm_route audio_map[] = {
	/* External Mics: MAINMIC, SUBMIC with bias*/
	{"MAINMIC", NULL, "Mic Bias 1"},
	{"SUBMIC", NULL, "Mic Bias 2"},
	{"Mic Bias 1", NULL, "Ext Mic"},
	{"Mic Bias 2", NULL, "Ext Mic"},

	/* External Speakers: HFL, HFR */
	{"Ext Spk", NULL, "HFL"},
	{"Ext Spk", NULL, "HFR"},

	/* Headset Mic: HSMIC with bias */
	{"HSMIC", NULL, "Headset Mic Bias"},
	{"Headset Mic Bias", NULL, "Headset Mic"},

	/* Headset Stereophone (Headphone): HSOL, HSOR */
	{"Headset Stereophone", NULL, "HSOL"},
	{"Headset Stereophone", NULL, "HSOR"},
	};

	static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int ret;

	/* Add SDP3430 specific widgets */
	ret = snd_soc_dapm_new_controls(dapm, sdp3430_twl4030_dapm_widgets,
	ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
	if (ret)
	return ret;

	/* Set up SDP3430 specific audio path audio_map */
	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));

	/* SDP3430 connected pins */
	snd_soc_dapm_enable_pin(dapm, "Ext Mic");
	snd_soc_dapm_enable_pin(dapm, "Ext Spk");
	snd_soc_dapm_disable_pin(dapm, "Headset Mic");
	snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");

	/* TWL4030 not connected pins */
	snd_soc_dapm_nc_pin(dapm, "AUXL");
	snd_soc_dapm_nc_pin(dapm, "AUXR");
	snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
	snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
	snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");

	snd_soc_dapm_nc_pin(dapm, "OUTL");
	snd_soc_dapm_nc_pin(dapm, "OUTR");
	snd_soc_dapm_nc_pin(dapm, "EARPIECE");
	snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
	snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
	snd_soc_dapm_nc_pin(dapm, "CARKITL");
	snd_soc_dapm_nc_pin(dapm, "CARKITR");

	ret = snd_soc_dapm_sync(dapm);
	if (ret)
	return ret;

	/* Headset jack detection */
	ret = snd_soc_jack_new(codec, "Headset Jack",
	SND_JACK_HEADSET, &hs_jack);
	if (ret)
	return ret;

	ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
	hs_jack_pins);
	if (ret)
	return ret;

	ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
	hs_jack_gpios);

	return ret;
	}

	static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_codec *codec = rtd->codec;
	unsigned short reg;

	/* Enable voice interface */
	reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
	reg \|= TWL4030_VIF_DIN_EN \| TWL4030_VIF_DOUT_EN \| TWL4030_VIF_EN;
	codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);

	return 0;
	}


	/* Digital audio interface glue - connects codec <--> CPU */
	static struct snd_soc_dai_link sdp3430_dai[] = {
	{
	.name = "TWL4030 I2S",
	.stream_name = "TWL4030 Audio",
	.cpu_dai_name = "omap-mcbsp-dai.1",
	.codec_dai_name = "twl4030-hifi",
	.platform_name = "omap-pcm-audio",
	.codec_name = "twl4030-codec",
	.init = sdp3430_twl4030_init,
	.ops = &sdp3430_ops,
	},
	{
	.name = "TWL4030 PCM",
	.stream_name = "TWL4030 Voice",
	.cpu_dai_name = "omap-mcbsp-dai.2",
	.codec_dai_name = "twl4030-voice",
	.platform_name = "omap-pcm-audio",
	.codec_name = "twl4030-codec",
	.init = sdp3430_twl4030_voice_init,
	.ops = &sdp3430_voice_ops,
	},
	};

	/* Audio machine driver */
	static struct snd_soc_card snd_soc_sdp3430 = {
	.name = "SDP3430",
	.dai_link = sdp3430_dai,
	.num_links = ARRAY_SIZE(sdp3430_dai),
	};

	static struct platform_device *sdp3430_snd_device;

	static int __init sdp3430_soc_init(void)
	{
	int ret;
	u8 pin_mux;

	if (!machine_is_omap_3430sdp())
	return -ENODEV;
	printk(KERN_INFO "SDP3430 SoC init\n");

	sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
	if (!sdp3430_snd_device) {
	printk(KERN_ERR "Platform device allocation failed\n");
	return -ENOMEM;
	}

	platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);

	/* Set TWL4030 GPIO6 as EXTMUTE signal */
	twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
	TWL4030_INTBR_PMBR1);
	pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
	pin_mux \|= TWL4030_GPIO6_PWM0_MUTE(0x02);
	twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
	TWL4030_INTBR_PMBR1);

	ret = platform_device_add(sdp3430_snd_device);
	if (ret)
	goto err1;

	return 0;

	err1:
	printk(KERN_ERR "Unable to add platform device\n");
	platform_device_put(sdp3430_snd_device);

	return ret;
	}
	module_init(sdp3430_soc_init);

	static void __exit sdp3430_soc_exit(void)
	{
	snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
	hs_jack_gpios);

	platform_device_unregister(sdp3430_snd_device);
	}
	module_exit(sdp3430_soc_exit);

	MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
	MODULE_DESCRIPTION("ALSA SoC SDP3430");
	MODULE_LICENSE("GPL");