[deliverable/linux.git] / sound / soc / omap / zoom2.c

/*
 * zoom2.c  --  SoC audio for Zoom2
 *
 * Author: Misael Lopez Cruz <x0052729@ti.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 <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>

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

#include "omap-mcbsp.h"
#include "omap-pcm.h"
#include "../codecs/twl4030.h"

#define ZOOM2_HEADSET_MUX_GPIO		(OMAP_MAX_GPIO_LINES + 15)
#define ZOOM2_HEADSET_EXTMUTE_GPIO	153

static int zoom2_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;
	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 zoom2_ops = {
	.hw_params = zoom2_hw_params,
};

static int zoom2_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->dai->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->dai->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 zoom2_voice_ops = {
	.hw_params = zoom2_hw_voice_params,
};

/* Zoom2 machine DAPM */
static const struct snd_soc_dapm_widget zoom2_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),
	SND_SOC_DAPM_LINE("Aux In", 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 Stereophone:  HSOL, HSOR */
	{"Headset Stereophone", NULL, "HSOL"},
	{"Headset Stereophone", NULL, "HSOR"},

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

	/* Aux In: AUXL, AUXR */
	{"Aux In", NULL, "AUXL"},
	{"Aux In", NULL, "AUXR"},
};

static int zoom2_twl4030_init(struct snd_soc_codec *codec)
{
	int ret;

	/* Add Zoom2 specific widgets */
	ret = snd_soc_dapm_new_controls(codec, zoom2_twl4030_dapm_widgets,
				ARRAY_SIZE(zoom2_twl4030_dapm_widgets));
	if (ret)
		return ret;

	/* Set up Zoom2 specific audio path audio_map */
	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

	/* Zoom2 connected pins */
	snd_soc_dapm_enable_pin(codec, "Ext Mic");
	snd_soc_dapm_enable_pin(codec, "Ext Spk");
	snd_soc_dapm_enable_pin(codec, "Headset Mic");
	snd_soc_dapm_enable_pin(codec, "Headset Stereophone");
	snd_soc_dapm_enable_pin(codec, "Aux In");

	/* TWL4030 not connected pins */
	snd_soc_dapm_nc_pin(codec, "CARKITMIC");
	snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
	snd_soc_dapm_nc_pin(codec, "DIGIMIC1");

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

	ret = snd_soc_dapm_sync(codec);

	return ret;
}

static int zoom2_twl4030_voice_init(struct snd_soc_codec *codec)
{
	unsigned short reg;

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

	return 0;
}

/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link zoom2_dai[] = {
	{
		.name = "TWL4030 I2S",
		.stream_name = "TWL4030 Audio",
		.cpu_dai = &omap_mcbsp_dai[0],
		.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
		.init = zoom2_twl4030_init,
		.ops = &zoom2_ops,
	},
	{
		.name = "TWL4030 PCM",
		.stream_name = "TWL4030 Voice",
		.cpu_dai = &omap_mcbsp_dai[1],
		.codec_dai = &twl4030_dai[TWL4030_DAI_VOICE],
		.init = zoom2_twl4030_voice_init,
		.ops = &zoom2_voice_ops,
	},
};

/* Audio machine driver */
static struct snd_soc_card snd_soc_zoom2 = {
	.name = "Zoom2",
	.platform = &omap_soc_platform,
	.dai_link = zoom2_dai,
	.num_links = ARRAY_SIZE(zoom2_dai),
};

/* EXTMUTE callback function */
void zoom2_set_hs_extmute(int mute)
{
	gpio_set_value(ZOOM2_HEADSET_EXTMUTE_GPIO, mute);
}

/* twl4030 setup */
static struct twl4030_setup_data twl4030_setup = {
	.ramp_delay_value = 3,	/* 161 ms */
	.sysclk = 26000,
	.hs_extmute = 1,
	.set_hs_extmute = zoom2_set_hs_extmute,
};

/* Audio subsystem */
static struct snd_soc_device zoom2_snd_devdata = {
	.card = &snd_soc_zoom2,
	.codec_dev = &soc_codec_dev_twl4030,
	.codec_data = &twl4030_setup,
};

static struct platform_device *zoom2_snd_device;

static int __init zoom2_soc_init(void)
{
	int ret;

	if (!machine_is_omap_zoom2()) {
		pr_debug("Not Zoom2!\n");
		return -ENODEV;
	}
	printk(KERN_INFO "Zoom2 SoC init\n");

	zoom2_snd_device = platform_device_alloc("soc-audio", -1);
	if (!zoom2_snd_device) {
		printk(KERN_ERR "Platform device allocation failed\n");
		return -ENOMEM;
	}

	platform_set_drvdata(zoom2_snd_device, &zoom2_snd_devdata);
	zoom2_snd_devdata.dev = &zoom2_snd_device->dev;
	*(unsigned int *)zoom2_dai[0].cpu_dai->private_data = 1; /* McBSP2 */
	*(unsigned int *)zoom2_dai[1].cpu_dai->private_data = 2; /* McBSP3 */

	ret = platform_device_add(zoom2_snd_device);
	if (ret)
		goto err1;

	BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0);
	gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0);

	BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0);
	gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0);

	return 0;

err1:
	printk(KERN_ERR "Unable to add platform device\n");
	platform_device_put(zoom2_snd_device);

	return ret;
}
module_init(zoom2_soc_init);

static void __exit zoom2_soc_exit(void)
{
	gpio_free(ZOOM2_HEADSET_MUX_GPIO);
	gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO);

	platform_device_unregister(zoom2_snd_device);
}
module_exit(zoom2_soc_exit);

MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
MODULE_DESCRIPTION("ALSA SoC Zoom2");
MODULE_LICENSE("GPL");
Commit	Line	Data
df205936 LCM	1	/*
	2	* zoom2.c -- SoC audio for Zoom2
	3	*
	4	* Author: Misael Lopez Cruz <x0052729@ti.com>
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
	8	* version 2 as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	18	* 02110-1301 USA
	19	*
	20	*/
	21
	22	#include <linux/clk.h>
	23	#include <linux/platform_device.h>
	24	#include <sound/core.h>
	25	#include <sound/pcm.h>
	26	#include <sound/soc.h>
	27	#include <sound/soc-dapm.h>
	28
	29	#include <asm/mach-types.h>
	30	#include <mach/hardware.h>
	31	#include <mach/gpio.h>
ce491cf8	32	#include <plat/mcbsp.h>
df205936 LCM	33
	34	#include "omap-mcbsp.h"
	35	#include "omap-pcm.h"
	36	#include "../codecs/twl4030.h"
	37
1b6ebdd7 CVJ	38	#define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15)
1b6ebdd7 CVJ	39	#define ZOOM2_HEADSET_EXTMUTE_GPIO 153
df205936 LCM	40
	41	static int zoom2_hw_params(struct snd_pcm_substream *substream,
	42	struct snd_pcm_hw_params *params)
	43	{
	44	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	45	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	46	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
	47	int ret;
	48
	49	/* Set codec DAI configuration */
	50	ret = snd_soc_dai_set_fmt(codec_dai,
	51	SND_SOC_DAIFMT_I2S \|
	52	SND_SOC_DAIFMT_NB_NF \|
	53	SND_SOC_DAIFMT_CBM_CFM);
	54	if (ret < 0) {
	55	printk(KERN_ERR "can't set codec DAI configuration\n");
	56	return ret;
	57	}
	58
	59	/* Set cpu DAI configuration */
	60	ret = snd_soc_dai_set_fmt(cpu_dai,
	61	SND_SOC_DAIFMT_I2S \|
	62	SND_SOC_DAIFMT_NB_NF \|
	63	SND_SOC_DAIFMT_CBM_CFM);
	64	if (ret < 0) {
	65	printk(KERN_ERR "can't set cpu DAI configuration\n");
	66	return ret;
	67	}
	68
	69	/* Set the codec system clock for DAC and ADC */
	70	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
	71	SND_SOC_CLOCK_IN);
	72	if (ret < 0) {
	73	printk(KERN_ERR "can't set codec system clock\n");
	74	return ret;
	75	}
	76
	77	return 0;
	78	}
	79
	80	static struct snd_soc_ops zoom2_ops = {
	81	.hw_params = zoom2_hw_params,
	82	};
	83
	84	static int zoom2_hw_voice_params(struct snd_pcm_substream *substream,
	85	struct snd_pcm_hw_params *params)
	86	{
	87	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	88	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	89	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
	90	int ret;
	91
	92	/* Set codec DAI configuration */
	93	ret = snd_soc_dai_set_fmt(codec_dai,
	94	SND_SOC_DAIFMT_DSP_A \|
	95	SND_SOC_DAIFMT_IB_NF \|
c264301c	96	SND_SOC_DAIFMT_CBM_CFM);
df205936 LCM	97	if (ret) {
	98	printk(KERN_ERR "can't set codec DAI configuration\n");
	99	return ret;
	100	}
	101
	102	/* Set cpu DAI configuration */
	103	ret = snd_soc_dai_set_fmt(cpu_dai,
	104	SND_SOC_DAIFMT_DSP_A \|
	105	SND_SOC_DAIFMT_IB_NF \|
	106	SND_SOC_DAIFMT_CBM_CFM);
	107	if (ret < 0) {
	108	printk(KERN_ERR "can't set cpu DAI configuration\n");
	109	return ret;
	110	}
	111
	112	/* Set the codec system clock for DAC and ADC */
	113	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
	114	SND_SOC_CLOCK_IN);
	115	if (ret < 0) {
	116	printk(KERN_ERR "can't set codec system clock\n");
	117	return ret;
	118	}
	119
	120	return 0;
	121	}
	122
	123	static struct snd_soc_ops zoom2_voice_ops = {
	124	.hw_params = zoom2_hw_voice_params,
	125	};
	126
	127	/* Zoom2 machine DAPM */
	128	static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = {
	129	SND_SOC_DAPM_MIC("Ext Mic", NULL),
	130	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	131	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	132	SND_SOC_DAPM_HP("Headset Stereophone", NULL),
	133	SND_SOC_DAPM_LINE("Aux In", NULL),
	134	};
	135
	136	static const struct snd_soc_dapm_route audio_map[] = {
	137	/* External Mics: MAINMIC, SUBMIC with bias*/
	138	{"MAINMIC", NULL, "Mic Bias 1"},
	139	{"SUBMIC", NULL, "Mic Bias 2"},
	140	{"Mic Bias 1", NULL, "Ext Mic"},
	141	{"Mic Bias 2", NULL, "Ext Mic"},
	142
	143	/* External Speakers: HFL, HFR */
	144	{"Ext Spk", NULL, "HFL"},
	145	{"Ext Spk", NULL, "HFR"},
	146
	147	/* Headset Stereophone: HSOL, HSOR */
	148	{"Headset Stereophone", NULL, "HSOL"},
	149	{"Headset Stereophone", NULL, "HSOR"},
	150
	151	/* Headset Mic: HSMIC with bias */
	152	{"HSMIC", NULL, "Headset Mic Bias"},
	153	{"Headset Mic Bias", NULL, "Headset Mic"},
	154
	155	/* Aux In: AUXL, AUXR */
	156	{"Aux In", NULL, "AUXL"},
	157	{"Aux In", NULL, "AUXR"},
	158	};
	159
	160	static int zoom2_twl4030_init(struct snd_soc_codec *codec)
161	{
162	int ret;
163
164	/* Add Zoom2 specific widgets */
165	ret = snd_soc_dapm_new_controls(codec, zoom2_twl4030_dapm_widgets,
166	ARRAY_SIZE(zoom2_twl4030_dapm_widgets));
167	if (ret)
168	return ret;
169
170	/* Set up Zoom2 specific audio path audio_map */
171	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
172
173	/* Zoom2 connected pins */
174	snd_soc_dapm_enable_pin(codec, "Ext Mic");
175	snd_soc_dapm_enable_pin(codec, "Ext Spk");
176	snd_soc_dapm_enable_pin(codec, "Headset Mic");
177	snd_soc_dapm_enable_pin(codec, "Headset Stereophone");
178	snd_soc_dapm_enable_pin(codec, "Aux In");
179
180	/* TWL4030 not connected pins */
181	snd_soc_dapm_nc_pin(codec, "CARKITMIC");
182	snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
183	snd_soc_dapm_nc_pin(codec, "DIGIMIC1");
184
185	snd_soc_dapm_nc_pin(codec, "OUTL");
186	snd_soc_dapm_nc_pin(codec, "OUTR");
187	snd_soc_dapm_nc_pin(codec, "EARPIECE");
188	snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
189	snd_soc_dapm_nc_pin(codec, "PREDRIVER");
190	snd_soc_dapm_nc_pin(codec, "CARKITL");
191	snd_soc_dapm_nc_pin(codec, "CARKITR");
192
193	ret = snd_soc_dapm_sync(codec);
194
195	return ret;
196	}
197
198	static int zoom2_twl4030_voice_init(struct snd_soc_codec *codec)
199	{
200	unsigned short reg;
201
202	/* Enable voice interface */
203	reg = codec->read(codec, TWL4030_REG_VOICE_IF);
204	reg \|= TWL4030_VIF_DIN_EN \| TWL4030_VIF_DOUT_EN \| TWL4030_VIF_EN;
205	codec->write(codec, TWL4030_REG_VOICE_IF, reg);
206
207	return 0;
208	}
209
210	/* Digital audio interface glue - connects codec <--> CPU */
211	static struct snd_soc_dai_link zoom2_dai[] = {
212	{
213	.name = "TWL4030 I2S",
214	.stream_name = "TWL4030 Audio",
215	.cpu_dai = &omap_mcbsp_dai[0],
216	.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
217	.init = zoom2_twl4030_init,
218	.ops = &zoom2_ops,
219	},
220	{
221	.name = "TWL4030 PCM",
222	.stream_name = "TWL4030 Voice",
223	.cpu_dai = &omap_mcbsp_dai[1],
224	.codec_dai = &twl4030_dai[TWL4030_DAI_VOICE],
225	.init = zoom2_twl4030_voice_init,
226	.ops = &zoom2_voice_ops,
227	},
228	};
229
230	/* Audio machine driver */
231	static struct snd_soc_card snd_soc_zoom2 = {
232	.name = "Zoom2",
233	.platform = &omap_soc_platform,
234	.dai_link = zoom2_dai,
235	.num_links = ARRAY_SIZE(zoom2_dai),
236	};
237
1b6ebdd7 CVJ	238	/* EXTMUTE callback function */
	239	void zoom2_set_hs_extmute(int mute)
	240	{
	241	gpio_set_value(ZOOM2_HEADSET_EXTMUTE_GPIO, mute);
	242	}
	243
df205936 LCM	244	/* twl4030 setup */
df205936 LCM	245	static struct twl4030_setup_data twl4030_setup = {
1b6ebdd7	246	.ramp_delay_value = 3, /* 161 ms */
df205936	247	.sysclk = 26000,
1b6ebdd7 CVJ	248	.hs_extmute = 1,
1b6ebdd7 CVJ	249	.set_hs_extmute = zoom2_set_hs_extmute,
df205936 LCM	250	};
	251
	252	/* Audio subsystem */
	253	static struct snd_soc_device zoom2_snd_devdata = {
	254	.card = &snd_soc_zoom2,
	255	.codec_dev = &soc_codec_dev_twl4030,
	256	.codec_data = &twl4030_setup,
	257	};
	258
	259	static struct platform_device *zoom2_snd_device;
	260
	261	static int __init zoom2_soc_init(void)
	262	{
	263	int ret;
	264
	265	if (!machine_is_omap_zoom2()) {
	266	pr_debug("Not Zoom2!\n");
	267	return -ENODEV;
	268	}
	269	printk(KERN_INFO "Zoom2 SoC init\n");
	270
	271	zoom2_snd_device = platform_device_alloc("soc-audio", -1);
	272	if (!zoom2_snd_device) {
	273	printk(KERN_ERR "Platform device allocation failed\n");
	274	return -ENOMEM;
	275	}
	276
	277	platform_set_drvdata(zoom2_snd_device, &zoom2_snd_devdata);
	278	zoom2_snd_devdata.dev = &zoom2_snd_device->dev;
	279	(unsigned int )zoom2_dai[0].cpu_dai->private_data = 1; /* McBSP2 */
	280	(unsigned int )zoom2_dai[1].cpu_dai->private_data = 2; /* McBSP3 */
	281
	282	ret = platform_device_add(zoom2_snd_device);
	283	if (ret)
	284	goto err1;
	285
	286	BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0);
	287	gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0);
	288
1b6ebdd7 CVJ	289	BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0);
	290	gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0);
	291
df205936 LCM	292	return 0;
	293
	294	err1:
	295	printk(KERN_ERR "Unable to add platform device\n");
	296	platform_device_put(zoom2_snd_device);
	297
	298	return ret;
	299	}
	300	module_init(zoom2_soc_init);
	301
	302	static void __exit zoom2_soc_exit(void)
	303	{
	304	gpio_free(ZOOM2_HEADSET_MUX_GPIO);
1b6ebdd7	305	gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO);
df205936 LCM	306
	307	platform_device_unregister(zoom2_snd_device);
	308	}
	309	module_exit(zoom2_soc_exit);
	310
	311	MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
	312	MODULE_DESCRIPTION("ALSA SoC Zoom2");
	313	MODULE_LICENSE("GPL");
	314