[linux-2.6-block.git] / sound / soc / omap / omap3pandora.c

/*
 * omap3pandora.c  --  SoC audio for Pandora Handheld Console
 *
 * Author: Gražvydas Ignotas <notasas@gmail.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/gpio.h>
#include <linux/delay.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>

#include <asm/mach-types.h>

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

#define OMAP3_PANDORA_DAC_POWER_GPIO	118
#define OMAP3_PANDORA_AMP_POWER_GPIO	14

#define PREFIX "ASoC omap3pandora: "

static int omap3pandora_cmn_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params, unsigned int fmt)
{
	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, fmt);
	if (ret < 0) {
		pr_err(PREFIX "can't set codec DAI configuration\n");
		return ret;
	}

	/* Set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
	if (ret < 0) {
		pr_err(PREFIX "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) {
		pr_err(PREFIX "can't set codec system clock\n");
		return ret;
	}

	/* Set McBSP clock to external */
	ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT,
				     256 * params_rate(params),
				     SND_SOC_CLOCK_IN);
	if (ret < 0) {
		pr_err(PREFIX "can't set cpu system clock\n");
		return ret;
	}

	ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
	if (ret < 0) {
		pr_err(PREFIX "can't set SRG clock divider\n");
		return ret;
	}

	return 0;
}

static int omap3pandora_out_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	return omap3pandora_cmn_hw_params(substream, params,
					  SND_SOC_DAIFMT_I2S |
					  SND_SOC_DAIFMT_IB_NF |
					  SND_SOC_DAIFMT_CBS_CFS);
}

static int omap3pandora_in_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	return omap3pandora_cmn_hw_params(substream, params,
					  SND_SOC_DAIFMT_I2S |
					  SND_SOC_DAIFMT_NB_NF |
					  SND_SOC_DAIFMT_CBS_CFS);
}

static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
{
	if (SND_SOC_DAPM_EVENT_ON(event)) {
		gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
		gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
	} else {
		gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
		mdelay(1);
		gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
	}

	return 0;
}

/*
 * Audio paths on Pandora board:
 *
 *  |O| ---> PCM DAC +-> AMP -> Headphone Jack
 *  |M|         A    +--------> Line Out
 *  |A| <~~clk~~+
 *  |P| <--- TWL4030 <--------- Line In and MICs
 */
static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("PCM DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
			   0, 0, NULL, 0, omap3pandora_hp_event,
			   SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_LINE("Line Out", NULL),
};

static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = {
	SND_SOC_DAPM_MIC("Mic (internal)", NULL),
	SND_SOC_DAPM_MIC("Mic (external)", NULL),
	SND_SOC_DAPM_LINE("Line In", NULL),
};

static const struct snd_soc_dapm_route omap3pandora_out_map[] = {
	{"PCM DAC", NULL, "APLL Enable"},
	{"Headphone Amplifier", NULL, "PCM DAC"},
	{"Line Out", NULL, "PCM DAC"},
	{"Headphone Jack", NULL, "Headphone Amplifier"},
};

static const struct snd_soc_dapm_route omap3pandora_in_map[] = {
	{"AUXL", NULL, "Line In"},
	{"AUXR", NULL, "Line In"},

	{"MAINMIC", NULL, "Mic Bias 1"},
	{"Mic Bias 1", NULL, "Mic (internal)"},

	{"SUBMIC", NULL, "Mic Bias 2"},
	{"Mic Bias 2", NULL, "Mic (external)"},
};

static int omap3pandora_out_init(struct snd_soc_codec *codec)
{
	int ret;

	/* All TWL4030 output pins are floating */
	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, "HSOL");
	snd_soc_dapm_nc_pin(codec, "HSOR");
	snd_soc_dapm_nc_pin(codec, "CARKITL");
	snd_soc_dapm_nc_pin(codec, "CARKITR");
	snd_soc_dapm_nc_pin(codec, "HFL");
	snd_soc_dapm_nc_pin(codec, "HFR");
	snd_soc_dapm_nc_pin(codec, "VIBRA");

	ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets,
				ARRAY_SIZE(omap3pandora_out_dapm_widgets));
	if (ret < 0)
		return ret;

	snd_soc_dapm_add_routes(codec, omap3pandora_out_map,
		ARRAY_SIZE(omap3pandora_out_map));

	return snd_soc_dapm_sync(codec);
}

static int omap3pandora_in_init(struct snd_soc_codec *codec)
{
	int ret;

	/* Not comnnected */
	snd_soc_dapm_nc_pin(codec, "HSMIC");
	snd_soc_dapm_nc_pin(codec, "CARKITMIC");
	snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
	snd_soc_dapm_nc_pin(codec, "DIGIMIC1");

	ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets,
				ARRAY_SIZE(omap3pandora_in_dapm_widgets));
	if (ret < 0)
		return ret;

	snd_soc_dapm_add_routes(codec, omap3pandora_in_map,
		ARRAY_SIZE(omap3pandora_in_map));

	return snd_soc_dapm_sync(codec);
}

static struct snd_soc_ops omap3pandora_out_ops = {
	.hw_params = omap3pandora_out_hw_params,
};

static struct snd_soc_ops omap3pandora_in_ops = {
	.hw_params = omap3pandora_in_hw_params,
};

/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link omap3pandora_dai[] = {
	{
		.name = "PCM1773",
		.stream_name = "HiFi Out",
		.cpu_dai = &omap_mcbsp_dai[0],
		.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
		.ops = &omap3pandora_out_ops,
		.init = omap3pandora_out_init,
	}, {
		.name = "TWL4030",
		.stream_name = "Line/Mic In",
		.cpu_dai = &omap_mcbsp_dai[1],
		.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
		.ops = &omap3pandora_in_ops,
		.init = omap3pandora_in_init,
	}
};

/* SoC card */
static struct snd_soc_card snd_soc_card_omap3pandora = {
	.name = "omap3pandora",
	.platform = &omap_soc_platform,
	.dai_link = omap3pandora_dai,
	.num_links = ARRAY_SIZE(omap3pandora_dai),
};

/* Audio subsystem */
static struct snd_soc_device omap3pandora_snd_data = {
	.card = &snd_soc_card_omap3pandora,
	.codec_dev = &soc_codec_dev_twl4030,
};

static struct platform_device *omap3pandora_snd_device;

static int __init omap3pandora_soc_init(void)
{
	int ret;

	if (!machine_is_omap3_pandora())
		return -ENODEV;

	pr_info("OMAP3 Pandora SoC init\n");

	ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
	if (ret) {
		pr_err(PREFIX "Failed to get DAC power GPIO\n");
		return ret;
	}

	ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
	if (ret) {
		pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
		goto fail0;
	}

	ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
	if (ret) {
		pr_err(PREFIX "Failed to get amp power GPIO\n");
		goto fail0;
	}

	ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
	if (ret) {
		pr_err(PREFIX "Failed to set amp power GPIO direction\n");
		goto fail1;
	}

	omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
	if (omap3pandora_snd_device == NULL) {
		pr_err(PREFIX "Platform device allocation failed\n");
		ret = -ENOMEM;
		goto fail1;
	}

	platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data);
	omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev;
	*(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */
	*(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */

	ret = platform_device_add(omap3pandora_snd_device);
	if (ret) {
		pr_err(PREFIX "Unable to add platform device\n");
		goto fail2;
	}

	return 0;

fail2:
	platform_device_put(omap3pandora_snd_device);
fail1:
	gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
fail0:
	gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
	return ret;
}
module_init(omap3pandora_soc_init);

static void __exit omap3pandora_soc_exit(void)
{
	platform_device_unregister(omap3pandora_snd_device);
	gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
	gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
}
module_exit(omap3pandora_soc_exit);

MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
MODULE_LICENSE("GPL");
Commit	Line	Data
68fb7407 GI	1	/*
	2	* omap3pandora.c -- SoC audio for Pandora Handheld Console
	3	*
	4	* Author: Gražvydas Ignotas <notasas@gmail.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 <linux/gpio.h>
	25	#include <linux/delay.h>
	26
	27	#include <sound/core.h>
	28	#include <sound/pcm.h>
	29	#include <sound/soc.h>
	30	#include <sound/soc-dapm.h>
	31
	32	#include <asm/mach-types.h>
	33
	34	#include "omap-mcbsp.h"
	35	#include "omap-pcm.h"
	36	#include "../codecs/twl4030.h"
	37
	38	#define OMAP3_PANDORA_DAC_POWER_GPIO 118
	39	#define OMAP3_PANDORA_AMP_POWER_GPIO 14
	40
	41	#define PREFIX "ASoC omap3pandora: "
	42
9e5d86fe JN	43	static int omap3pandora_cmn_hw_params(struct snd_pcm_substream *substream,
9e5d86fe JN	44	struct snd_pcm_hw_params *params, unsigned int fmt)
68fb7407	45	{
9e5d86fe JN	46	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	47	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	48	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
68fb7407 GI	49	int ret;
	50
	51	/* Set codec DAI configuration */
	52	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
	53	if (ret < 0) {
	54	pr_err(PREFIX "can't set codec DAI configuration\n");
	55	return ret;
	56	}
	57
	58	/* Set cpu DAI configuration */
	59	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
	60	if (ret < 0) {
	61	pr_err(PREFIX "can't set cpu DAI configuration\n");
	62	return ret;
	63	}
	64
	65	/* Set the codec system clock for DAC and ADC */
	66	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
	67	SND_SOC_CLOCK_IN);
	68	if (ret < 0) {
	69	pr_err(PREFIX "can't set codec system clock\n");
	70	return ret;
	71	}
	72
	73	/* Set McBSP clock to external */
9e5d86fe JN	74	ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT,
	75	256 * params_rate(params),
	76	SND_SOC_CLOCK_IN);
68fb7407 GI	77	if (ret < 0) {
	78	pr_err(PREFIX "can't set cpu system clock\n");
	79	return ret;
	80	}
	81
	82	ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
	83	if (ret < 0) {
	84	pr_err(PREFIX "can't set SRG clock divider\n");
	85	return ret;
	86	}
	87
	88	return 0;
	89	}
	90
	91	static int omap3pandora_out_hw_params(struct snd_pcm_substream *substream,
	92	struct snd_pcm_hw_params *params)
	93	{
9e5d86fe	94	return omap3pandora_cmn_hw_params(substream, params,
68fb7407 GI	95	SND_SOC_DAIFMT_I2S \|
	96	SND_SOC_DAIFMT_IB_NF \|
	97	SND_SOC_DAIFMT_CBS_CFS);
	98	}
	99
	100	static int omap3pandora_in_hw_params(struct snd_pcm_substream *substream,
	101	struct snd_pcm_hw_params *params)
	102	{
9e5d86fe	103	return omap3pandora_cmn_hw_params(substream, params,
68fb7407 GI	104	SND_SOC_DAIFMT_I2S \|
	105	SND_SOC_DAIFMT_NB_NF \|
	106	SND_SOC_DAIFMT_CBS_CFS);
	107	}
	108
	109	static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
	110	struct snd_kcontrol *k, int event)
	111	{
	112	if (SND_SOC_DAPM_EVENT_ON(event)) {
	113	gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
	114	gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
	115	} else {
	116	gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
	117	mdelay(1);
	118	gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
	119	}
	120
	121	return 0;
	122	}
	123
	124	/*
	125	* Audio paths on Pandora board:
	126	*
	127	* \|O\| ---> PCM DAC +-> AMP -> Headphone Jack
	128	* \|M\| A +--------> Line Out
	129	* \|A\| <~~clk~~+
	130	* \|P\| <--- TWL4030 <--------- Line In and MICs
	131	*/
	132	static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
f3dd7041	133	SND_SOC_DAPM_DAC("PCM DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0),
68fb7407 GI	134	SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
	135	0, 0, NULL, 0, omap3pandora_hp_event,
	136	SND_SOC_DAPM_POST_PMU \| SND_SOC_DAPM_PRE_PMD),
	137	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	138	SND_SOC_DAPM_LINE("Line Out", NULL),
	139	};
	140
	141	static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = {
8f008062	142	SND_SOC_DAPM_MIC("Mic (internal)", NULL),
68fb7407 GI	143	SND_SOC_DAPM_MIC("Mic (external)", NULL),
	144	SND_SOC_DAPM_LINE("Line In", NULL),
	145	};
	146
	147	static const struct snd_soc_dapm_route omap3pandora_out_map[] = {
3b9447fb	148	{"PCM DAC", NULL, "APLL Enable"},
68fb7407 GI	149	{"Headphone Amplifier", NULL, "PCM DAC"},
	150	{"Line Out", NULL, "PCM DAC"},
	151	{"Headphone Jack", NULL, "Headphone Amplifier"},
	152	};
	153
	154	static const struct snd_soc_dapm_route omap3pandora_in_map[] = {
8f008062 GI	155	{"AUXL", NULL, "Line In"},
	156	{"AUXR", NULL, "Line In"},
	157
	158	{"MAINMIC", NULL, "Mic Bias 1"},
	159	{"Mic Bias 1", NULL, "Mic (internal)"},
	160
	161	{"SUBMIC", NULL, "Mic Bias 2"},
	162	{"Mic Bias 2", NULL, "Mic (external)"},
68fb7407 GI	163	};
	164
	165	static int omap3pandora_out_init(struct snd_soc_codec *codec)
	166	{
	167	int ret;
	168
8f008062 GI	169	/* All TWL4030 output pins are floating */
	170	snd_soc_dapm_nc_pin(codec, "OUTL");
	171	snd_soc_dapm_nc_pin(codec, "OUTR");
	172	snd_soc_dapm_nc_pin(codec, "EARPIECE");
	173	snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
	174	snd_soc_dapm_nc_pin(codec, "PREDRIVER");
	175	snd_soc_dapm_nc_pin(codec, "HSOL");
	176	snd_soc_dapm_nc_pin(codec, "HSOR");
	177	snd_soc_dapm_nc_pin(codec, "CARKITL");
	178	snd_soc_dapm_nc_pin(codec, "CARKITR");
	179	snd_soc_dapm_nc_pin(codec, "HFL");
	180	snd_soc_dapm_nc_pin(codec, "HFR");
f3dd7041	181	snd_soc_dapm_nc_pin(codec, "VIBRA");
8f008062	182
68fb7407 GI	183	ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets,
	184	ARRAY_SIZE(omap3pandora_out_dapm_widgets));
	185	if (ret < 0)
	186	return ret;
	187
	188	snd_soc_dapm_add_routes(codec, omap3pandora_out_map,
	189	ARRAY_SIZE(omap3pandora_out_map));
	190
	191	return snd_soc_dapm_sync(codec);
	192	}
	193
	194	static int omap3pandora_in_init(struct snd_soc_codec *codec)
	195	{
	196	int ret;
	197
8f008062 GI	198	/* Not comnnected */
	199	snd_soc_dapm_nc_pin(codec, "HSMIC");
	200	snd_soc_dapm_nc_pin(codec, "CARKITMIC");
	201	snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
	202	snd_soc_dapm_nc_pin(codec, "DIGIMIC1");
7f185340	203
68fb7407 GI	204	ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets,
	205	ARRAY_SIZE(omap3pandora_in_dapm_widgets));
	206	if (ret < 0)
	207	return ret;
	208
	209	snd_soc_dapm_add_routes(codec, omap3pandora_in_map,
	210	ARRAY_SIZE(omap3pandora_in_map));
	211
	212	return snd_soc_dapm_sync(codec);
	213	}
	214
	215	static struct snd_soc_ops omap3pandora_out_ops = {
	216	.hw_params = omap3pandora_out_hw_params,
	217	};
	218
	219	static struct snd_soc_ops omap3pandora_in_ops = {
	220	.hw_params = omap3pandora_in_hw_params,
	221	};
	222
	223	/* Digital audio interface glue - connects codec <--> CPU */
	224	static struct snd_soc_dai_link omap3pandora_dai[] = {
	225	{
	226	.name = "PCM1773",
	227	.stream_name = "HiFi Out",
	228	.cpu_dai = &omap_mcbsp_dai[0],
7154b3e8	229	.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
68fb7407 GI	230	.ops = &omap3pandora_out_ops,
	231	.init = omap3pandora_out_init,
	232	}, {
	233	.name = "TWL4030",
	234	.stream_name = "Line/Mic In",
	235	.cpu_dai = &omap_mcbsp_dai[1],
7154b3e8	236	.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
68fb7407 GI	237	.ops = &omap3pandora_in_ops,
	238	.init = omap3pandora_in_init,
	239	}
	240	};
	241
	242	/* SoC card */
	243	static struct snd_soc_card snd_soc_card_omap3pandora = {
	244	.name = "omap3pandora",
	245	.platform = &omap_soc_platform,
	246	.dai_link = omap3pandora_dai,
	247	.num_links = ARRAY_SIZE(omap3pandora_dai),
	248	};
	249
	250	/* Audio subsystem */
	251	static struct snd_soc_device omap3pandora_snd_data = {
	252	.card = &snd_soc_card_omap3pandora,
	253	.codec_dev = &soc_codec_dev_twl4030,
	254	};
	255
	256	static struct platform_device *omap3pandora_snd_device;
	257
	258	static int __init omap3pandora_soc_init(void)
	259	{
	260	int ret;
	261
8f008062	262	if (!machine_is_omap3_pandora())
68fb7407	263	return -ENODEV;
8f008062	264
68fb7407 GI	265	pr_info("OMAP3 Pandora SoC init\n");
	266
	267	ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
	268	if (ret) {
	269	pr_err(PREFIX "Failed to get DAC power GPIO\n");
	270	return ret;
	271	}
	272
	273	ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
	274	if (ret) {
	275	pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
	276	goto fail0;
	277	}
	278
	279	ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
	280	if (ret) {
	281	pr_err(PREFIX "Failed to get amp power GPIO\n");
	282	goto fail0;
	283	}
	284
	285	ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
	286	if (ret) {
	287	pr_err(PREFIX "Failed to set amp power GPIO direction\n");
	288	goto fail1;
	289	}
	290
	291	omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
	292	if (omap3pandora_snd_device == NULL) {
	293	pr_err(PREFIX "Platform device allocation failed\n");
	294	ret = -ENOMEM;
	295	goto fail1;
	296	}
	297
	298	platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data);
	299	omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev;
	300	(unsigned int )omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */
	301	(unsigned int )omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */
	302
	303	ret = platform_device_add(omap3pandora_snd_device);
	304	if (ret) {
	305	pr_err(PREFIX "Unable to add platform device\n");
	306	goto fail2;
	307	}
	308
	309	return 0;
	310
	311	fail2:
	312	platform_device_put(omap3pandora_snd_device);
	313	fail1:
	314	gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
	315	fail0:
	316	gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
	317	return ret;
	318	}
	319	module_init(omap3pandora_soc_init);
	320
	321	static void __exit omap3pandora_soc_exit(void)
	322	{
	323	platform_device_unregister(omap3pandora_snd_device);
	324	gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
	325	gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
	326	}
	327	module_exit(omap3pandora_soc_exit);
	328
329	MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
330	MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
331	MODULE_LICENSE("GPL");