[deliverable/linux.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 <linux/regulator/consumer.h>

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

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

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

#define OMAP3_PANDORA_DAC_POWER_GPIO	118
#define OMAP3_PANDORA_AMP_POWER_GPIO	14

#define PREFIX "ASoC omap3pandora: "

static struct regulator *omap3pandora_dac_reg;

static int omap3pandora_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 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_dac_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
{
	/*
	 * The PCM1773 DAC datasheet requires 1ms delay between switching
	 * VCC power on/off and /PD pin high/low
	 */
	if (SND_SOC_DAPM_EVENT_ON(event)) {
		regulator_enable(omap3pandora_dac_reg);
		mdelay(1);
		gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
	} else {
		gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
		mdelay(1);
		regulator_disable(omap3pandora_dac_reg);
	}

	return 0;
}

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_AMP_POWER_GPIO, 1);
	else
		gpio_set_value(OMAP3_PANDORA_AMP_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_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM,
			   0, 0, omap3pandora_dac_event,
			   SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
	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_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int ret;

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

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

	return snd_soc_dapm_add_routes(dapm, omap3pandora_out_map,
		ARRAY_SIZE(omap3pandora_out_map));
}

static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int ret;

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

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

	return snd_soc_dapm_add_routes(dapm, omap3pandora_in_map,
		ARRAY_SIZE(omap3pandora_in_map));
}

static struct snd_soc_ops omap3pandora_ops = {
	.hw_params = omap3pandora_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_name = "omap-mcbsp-dai.1",
		.codec_dai_name = "twl4030-hifi",
		.platform_name = "omap-pcm-audio",
		.codec_name = "twl4030-codec",
		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
			   SND_SOC_DAIFMT_CBS_CFS,
		.ops = &omap3pandora_ops,
		.init = omap3pandora_out_init,
	}, {
		.name = "TWL4030",
		.stream_name = "Line/Mic In",
		.cpu_dai_name = "omap-mcbsp-dai.3",
		.codec_dai_name = "twl4030-hifi",
		.platform_name = "omap-pcm-audio",
		.codec_name = "twl4030-codec",
		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
			   SND_SOC_DAIFMT_CBS_CFS,
		.ops = &omap3pandora_ops,
		.init = omap3pandora_in_init,
	}
};

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

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, &snd_soc_card_omap3pandora);

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

	omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc");
	if (IS_ERR(omap3pandora_dac_reg)) {
		pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n",
			dev_name(&omap3pandora_snd_device->dev),
			PTR_ERR(omap3pandora_dac_reg));
		ret = PTR_ERR(omap3pandora_dac_reg);
		goto fail3;
	}

	return 0;

fail3:
	platform_device_del(omap3pandora_snd_device);
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)
{
	regulator_put(omap3pandora_dac_reg);
	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>
c50749de	26	#include <linux/regulator/consumer.h>
68fb7407 GI	27
	28	#include <sound/core.h>
	29	#include <sound/pcm.h>
	30	#include <sound/soc.h>
68fb7407 GI	31
68fb7407 GI	32	#include <asm/mach-types.h>
f0fba2ad	33	#include <plat/mcbsp.h>
68fb7407 GI	34
	35	#include "omap-mcbsp.h"
	36	#include "omap-pcm.h"
68fb7407 GI	37
	38	#define OMAP3_PANDORA_DAC_POWER_GPIO 118
	39	#define OMAP3_PANDORA_AMP_POWER_GPIO 14
	40
	41	#define PREFIX "ASoC omap3pandora: "
	42
c50749de GI	43	static struct regulator *omap3pandora_dac_reg;
c50749de GI	44
4b94dba0 GI	45	static int omap3pandora_hw_params(struct snd_pcm_substream *substream,
4b94dba0 GI	46	struct snd_pcm_hw_params *params)
68fb7407	47	{
9e5d86fe	48	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	49	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	50	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
68fb7407 GI	51	int ret;
68fb7407 GI	52
68fb7407 GI	53	/* Set the codec system clock for DAC and ADC */
	54	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
	55	SND_SOC_CLOCK_IN);
	56	if (ret < 0) {
	57	pr_err(PREFIX "can't set codec system clock\n");
	58	return ret;
	59	}
	60
	61	/* Set McBSP clock to external */
9e5d86fe JN	62	ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT,
	63	256 * params_rate(params),
	64	SND_SOC_CLOCK_IN);
68fb7407 GI	65	if (ret < 0) {
	66	pr_err(PREFIX "can't set cpu system clock\n");
	67	return ret;
	68	}
	69
	70	ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
	71	if (ret < 0) {
	72	pr_err(PREFIX "can't set SRG clock divider\n");
	73	return ret;
	74	}
	75
	76	return 0;
	77	}
	78
c50749de	79	static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w,
68fb7407 GI	80	struct snd_kcontrol *k, int event)
68fb7407 GI	81	{
c50749de GI	82	/*
	83	* The PCM1773 DAC datasheet requires 1ms delay between switching
	84	* VCC power on/off and /PD pin high/low
	85	*/
68fb7407	86	if (SND_SOC_DAPM_EVENT_ON(event)) {
c50749de GI	87	regulator_enable(omap3pandora_dac_reg);
c50749de GI	88	mdelay(1);
68fb7407	89	gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
68fb7407	90	} else {
68fb7407	91	gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
c50749de GI	92	mdelay(1);
c50749de GI	93	regulator_disable(omap3pandora_dac_reg);
68fb7407 GI	94	}
	95
	96	return 0;
	97	}
	98
c50749de GI	99	static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
	100	struct snd_kcontrol *k, int event)
	101	{
	102	if (SND_SOC_DAPM_EVENT_ON(event))
	103	gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
	104	else
	105	gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
	106
	107	return 0;
	108	}
	109
68fb7407 GI	110	/*
	111	* Audio paths on Pandora board:
	112	*
	113	* \|O\| ---> PCM DAC +-> AMP -> Headphone Jack
	114	* \|M\| A +--------> Line Out
	115	* \|A\| <~~clk~~+
	116	* \|P\| <--- TWL4030 <--------- Line In and MICs
	117	*/
	118	static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
c50749de GI	119	SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM,
	120	0, 0, omap3pandora_dac_event,
	121	SND_SOC_DAPM_POST_PMU \| SND_SOC_DAPM_PRE_PMD),
68fb7407 GI	122	SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
	123	0, 0, NULL, 0, omap3pandora_hp_event,
	124	SND_SOC_DAPM_POST_PMU \| SND_SOC_DAPM_PRE_PMD),
	125	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	126	SND_SOC_DAPM_LINE("Line Out", NULL),
	127	};
	128
	129	static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = {
8f008062	130	SND_SOC_DAPM_MIC("Mic (internal)", NULL),
68fb7407 GI	131	SND_SOC_DAPM_MIC("Mic (external)", NULL),
	132	SND_SOC_DAPM_LINE("Line In", NULL),
	133	};
	134
	135	static const struct snd_soc_dapm_route omap3pandora_out_map[] = {
3b9447fb	136	{"PCM DAC", NULL, "APLL Enable"},
68fb7407 GI	137	{"Headphone Amplifier", NULL, "PCM DAC"},
	138	{"Line Out", NULL, "PCM DAC"},
	139	{"Headphone Jack", NULL, "Headphone Amplifier"},
	140	};
	141
	142	static const struct snd_soc_dapm_route omap3pandora_in_map[] = {
8f008062 GI	143	{"AUXL", NULL, "Line In"},
	144	{"AUXR", NULL, "Line In"},
	145
	146	{"MAINMIC", NULL, "Mic Bias 1"},
	147	{"Mic Bias 1", NULL, "Mic (internal)"},
	148
	149	{"SUBMIC", NULL, "Mic Bias 2"},
	150	{"Mic Bias 2", NULL, "Mic (external)"},
68fb7407 GI	151	};
68fb7407 GI	152
f0fba2ad	153	static int omap3pandora_out_init(struct snd_soc_pcm_runtime *rtd)
68fb7407	154	{
f0fba2ad	155	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	156	struct snd_soc_dapm_context *dapm = &codec->dapm;
68fb7407 GI	157	int ret;
68fb7407 GI	158
8f008062	159	/* All TWL4030 output pins are floating */
ce6120cc LG	160	snd_soc_dapm_nc_pin(dapm, "EARPIECE");
	161	snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
	162	snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
	163	snd_soc_dapm_nc_pin(dapm, "HSOL");
	164	snd_soc_dapm_nc_pin(dapm, "HSOR");
	165	snd_soc_dapm_nc_pin(dapm, "CARKITL");
	166	snd_soc_dapm_nc_pin(dapm, "CARKITR");
	167	snd_soc_dapm_nc_pin(dapm, "HFL");
	168	snd_soc_dapm_nc_pin(dapm, "HFR");
	169	snd_soc_dapm_nc_pin(dapm, "VIBRA");
	170
	171	ret = snd_soc_dapm_new_controls(dapm, omap3pandora_out_dapm_widgets,
68fb7407 GI	172	ARRAY_SIZE(omap3pandora_out_dapm_widgets));
	173	if (ret < 0)
	174	return ret;
	175
cb424877	176	return snd_soc_dapm_add_routes(dapm, omap3pandora_out_map,
68fb7407	177	ARRAY_SIZE(omap3pandora_out_map));
68fb7407 GI	178	}
68fb7407 GI	179
f0fba2ad	180	static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd)
68fb7407	181	{
f0fba2ad	182	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	183	struct snd_soc_dapm_context *dapm = &codec->dapm;
68fb7407 GI	184	int ret;
68fb7407 GI	185
8f008062	186	/* Not comnnected */
ce6120cc LG	187	snd_soc_dapm_nc_pin(dapm, "HSMIC");
	188	snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
	189	snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
	190	snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
7f185340	191
ce6120cc	192	ret = snd_soc_dapm_new_controls(dapm, omap3pandora_in_dapm_widgets,
68fb7407 GI	193	ARRAY_SIZE(omap3pandora_in_dapm_widgets));
	194	if (ret < 0)
	195	return ret;
	196
cb424877	197	return snd_soc_dapm_add_routes(dapm, omap3pandora_in_map,
68fb7407	198	ARRAY_SIZE(omap3pandora_in_map));
68fb7407 GI	199	}
68fb7407 GI	200
4b94dba0 GI	201	static struct snd_soc_ops omap3pandora_ops = {
4b94dba0 GI	202	.hw_params = omap3pandora_hw_params,
68fb7407 GI	203	};
	204
	205	/* Digital audio interface glue - connects codec <--> CPU */
	206	static struct snd_soc_dai_link omap3pandora_dai[] = {
	207	{
	208	.name = "PCM1773",
	209	.stream_name = "HiFi Out",
f0fba2ad LG	210	.cpu_dai_name = "omap-mcbsp-dai.1",
	211	.codec_dai_name = "twl4030-hifi",
	212	.platform_name = "omap-pcm-audio",
	213	.codec_name = "twl4030-codec",
cf9feff2 JN	214	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
cf9feff2 JN	215	SND_SOC_DAIFMT_CBS_CFS,
4b94dba0	216	.ops = &omap3pandora_ops,
68fb7407 GI	217	.init = omap3pandora_out_init,
	218	}, {
	219	.name = "TWL4030",
	220	.stream_name = "Line/Mic In",
f0fba2ad LG	221	.cpu_dai_name = "omap-mcbsp-dai.3",
	222	.codec_dai_name = "twl4030-hifi",
	223	.platform_name = "omap-pcm-audio",
	224	.codec_name = "twl4030-codec",
cf9feff2 JN	225	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
cf9feff2 JN	226	SND_SOC_DAIFMT_CBS_CFS,
4b94dba0	227	.ops = &omap3pandora_ops,
68fb7407 GI	228	.init = omap3pandora_in_init,
	229	}
	230	};
	231
	232	/* SoC card */
	233	static struct snd_soc_card snd_soc_card_omap3pandora = {
	234	.name = "omap3pandora",
68fb7407 GI	235	.dai_link = omap3pandora_dai,
	236	.num_links = ARRAY_SIZE(omap3pandora_dai),
	237	};
	238
68fb7407 GI	239	static struct platform_device *omap3pandora_snd_device;
	240
	241	static int __init omap3pandora_soc_init(void)
	242	{
	243	int ret;
	244
8f008062	245	if (!machine_is_omap3_pandora())
68fb7407	246	return -ENODEV;
8f008062	247
68fb7407 GI	248	pr_info("OMAP3 Pandora SoC init\n");
	249
	250	ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
	251	if (ret) {
	252	pr_err(PREFIX "Failed to get DAC power GPIO\n");
	253	return ret;
	254	}
	255
	256	ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
	257	if (ret) {
	258	pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
	259	goto fail0;
	260	}
	261
	262	ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
	263	if (ret) {
	264	pr_err(PREFIX "Failed to get amp power GPIO\n");
	265	goto fail0;
	266	}
	267
	268	ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
	269	if (ret) {
	270	pr_err(PREFIX "Failed to set amp power GPIO direction\n");
	271	goto fail1;
	272	}
	273
	274	omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
	275	if (omap3pandora_snd_device == NULL) {
	276	pr_err(PREFIX "Platform device allocation failed\n");
	277	ret = -ENOMEM;
	278	goto fail1;
	279	}
	280
f0fba2ad	281	platform_set_drvdata(omap3pandora_snd_device, &snd_soc_card_omap3pandora);
68fb7407 GI	282
	283	ret = platform_device_add(omap3pandora_snd_device);
	284	if (ret) {
	285	pr_err(PREFIX "Unable to add platform device\n");
	286	goto fail2;
	287	}
	288
c50749de GI	289	omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc");
	290	if (IS_ERR(omap3pandora_dac_reg)) {
	291	pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n",
	292	dev_name(&omap3pandora_snd_device->dev),
	293	PTR_ERR(omap3pandora_dac_reg));
5c12d201	294	ret = PTR_ERR(omap3pandora_dac_reg);
c50749de GI	295	goto fail3;
	296	}
	297
68fb7407 GI	298	return 0;
68fb7407 GI	299
c50749de GI	300	fail3:
c50749de GI	301	platform_device_del(omap3pandora_snd_device);
68fb7407 GI	302	fail2:
	303	platform_device_put(omap3pandora_snd_device);
	304	fail1:
	305	gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
	306	fail0:
	307	gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
	308	return ret;
	309	}
	310	module_init(omap3pandora_soc_init);
	311
	312	static void __exit omap3pandora_soc_exit(void)
	313	{
c50749de	314	regulator_put(omap3pandora_dac_reg);
68fb7407 GI	315	platform_device_unregister(omap3pandora_snd_device);
	316	gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
	317	gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
	318	}
	319	module_exit(omap3pandora_soc_exit);
	320
	321	MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
	322	MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
	323	MODULE_LICENSE("GPL");