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

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

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

#define ZOOM2_HEADSET_MUX_GPIO		(OMAP_MAX_GPIO_LINES + 15)

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->codec_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) {
		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,
};

/* 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_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	/* TWL4030 not connected pins */
	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, "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");

	return 0;
}

static int zoom2_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 zoom2_dai[] = {
	{
		.name = "TWL4030 I2S",
		.stream_name = "TWL4030 Audio",
		.cpu_dai_name = "omap-mcbsp.2",
		.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_CBM_CFM,
		.init = zoom2_twl4030_init,
		.ops = &zoom2_ops,
	},
	{
		.name = "TWL4030 PCM",
		.stream_name = "TWL4030 Voice",
		.cpu_dai_name = "omap-mcbsp.3",
		.codec_dai_name = "twl4030-voice",
		.platform_name = "omap-pcm-audio",
		.codec_name = "twl4030-codec",
		.dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
			   SND_SOC_DAIFMT_CBM_CFM,
		.init = zoom2_twl4030_voice_init,
		.ops = &zoom2_ops,
	},
};

/* Audio machine driver */
static struct snd_soc_card snd_soc_zoom2 = {
	.name = "Zoom2",
	.owner = THIS_MODULE,
	.dai_link = zoom2_dai,
	.num_links = ARRAY_SIZE(zoom2_dai),

	.dapm_widgets = zoom2_twl4030_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(zoom2_twl4030_dapm_widgets),
	.dapm_routes = audio_map,
	.num_dapm_routes = ARRAY_SIZE(audio_map),
};

static struct platform_device *zoom2_snd_device;

static int __init zoom2_soc_init(void)
{
	int ret;

	if (!machine_is_omap_zoom2())
		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, &snd_soc_zoom2);
	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>
df205936 LCM	27
	28	#include <asm/mach-types.h>
	29	#include <mach/hardware.h>
	30	#include <mach/gpio.h>
f0fba2ad	31	#include <mach/board-zoom.h>
ce491cf8	32	#include <plat/mcbsp.h>
df205936	33
f0fba2ad	34	/* Register descriptions for twl4030 codec part */
57fe7251	35	#include <linux/mfd/twl4030-audio.h>
da155d5b	36	#include <linux/module.h>
f0fba2ad	37
df205936 LCM	38	#include "omap-mcbsp.h"
df205936 LCM	39	#include "omap-pcm.h"
df205936	40
1b6ebdd7	41	#define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15)
df205936 LCM	42
	43	static int zoom2_hw_params(struct snd_pcm_substream *substream,
	44	struct snd_pcm_hw_params *params)
	45	{
	46	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	47	struct snd_soc_dai *codec_dai = rtd->codec_dai;
df205936 LCM	48	int ret;
df205936 LCM	49
df205936 LCM	50	/* Set the codec system clock for DAC and ADC */
	51	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
	52	SND_SOC_CLOCK_IN);
	53	if (ret < 0) {
	54	printk(KERN_ERR "can't set codec system clock\n");
	55	return ret;
	56	}
	57
	58	return 0;
	59	}
	60
	61	static struct snd_soc_ops zoom2_ops = {
	62	.hw_params = zoom2_hw_params,
	63	};
	64
df205936 LCM	65	/* Zoom2 machine DAPM */
	66	static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = {
	67	SND_SOC_DAPM_MIC("Ext Mic", NULL),
	68	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	69	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	70	SND_SOC_DAPM_HP("Headset Stereophone", NULL),
	71	SND_SOC_DAPM_LINE("Aux In", NULL),
	72	};
	73
	74	static const struct snd_soc_dapm_route audio_map[] = {
	75	/* External Mics: MAINMIC, SUBMIC with bias*/
	76	{"MAINMIC", NULL, "Mic Bias 1"},
	77	{"SUBMIC", NULL, "Mic Bias 2"},
	78	{"Mic Bias 1", NULL, "Ext Mic"},
	79	{"Mic Bias 2", NULL, "Ext Mic"},
	80
	81	/* External Speakers: HFL, HFR */
	82	{"Ext Spk", NULL, "HFL"},
	83	{"Ext Spk", NULL, "HFR"},
	84
	85	/* Headset Stereophone: HSOL, HSOR */
	86	{"Headset Stereophone", NULL, "HSOL"},
	87	{"Headset Stereophone", NULL, "HSOR"},
	88
	89	/* Headset Mic: HSMIC with bias */
	90	{"HSMIC", NULL, "Headset Mic Bias"},
	91	{"Headset Mic Bias", NULL, "Headset Mic"},
	92
	93	/* Aux In: AUXL, AUXR */
	94	{"Aux In", NULL, "AUXL"},
	95	{"Aux In", NULL, "AUXR"},
	96	};
	97
f0fba2ad	98	static int zoom2_twl4030_init(struct snd_soc_pcm_runtime *rtd)
df205936	99	{
f0fba2ad	100	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	101	struct snd_soc_dapm_context *dapm = &codec->dapm;
df205936	102
df205936	103	/* TWL4030 not connected pins */
ce6120cc LG	104	snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
	105	snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
	106	snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
	107	snd_soc_dapm_nc_pin(dapm, "EARPIECE");
	108	snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
	109	snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
	110	snd_soc_dapm_nc_pin(dapm, "CARKITL");
	111	snd_soc_dapm_nc_pin(dapm, "CARKITR");
	112
cb424877	113	return 0;
df205936 LCM	114	}
df205936 LCM	115
f0fba2ad	116	static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
df205936	117	{
f0fba2ad	118	struct snd_soc_codec *codec = rtd->codec;
df205936 LCM	119	unsigned short reg;
	120
	121	/* Enable voice interface */
f0fba2ad	122	reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
df205936	123	reg \|= TWL4030_VIF_DIN_EN \| TWL4030_VIF_DOUT_EN \| TWL4030_VIF_EN;
f0fba2ad	124	codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
df205936 LCM	125
	126	return 0;
	127	}
	128
	129	/* Digital audio interface glue - connects codec <--> CPU */
	130	static struct snd_soc_dai_link zoom2_dai[] = {
	131	{
	132	.name = "TWL4030 I2S",
	133	.stream_name = "TWL4030 Audio",
45656b44	134	.cpu_dai_name = "omap-mcbsp.2",
f0fba2ad LG	135	.codec_dai_name = "twl4030-hifi",
	136	.platform_name = "omap-pcm-audio",
	137	.codec_name = "twl4030-codec",
cf9feff2 JN	138	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
cf9feff2 JN	139	SND_SOC_DAIFMT_CBM_CFM,
df205936 LCM	140	.init = zoom2_twl4030_init,
	141	.ops = &zoom2_ops,
	142	},
	143	{
	144	.name = "TWL4030 PCM",
	145	.stream_name = "TWL4030 Voice",
45656b44	146	.cpu_dai_name = "omap-mcbsp.3",
f0fba2ad LG	147	.codec_dai_name = "twl4030-voice",
	148	.platform_name = "omap-pcm-audio",
	149	.codec_name = "twl4030-codec",
cf9feff2 JN	150	.dai_fmt = SND_SOC_DAIFMT_DSP_A \| SND_SOC_DAIFMT_IB_NF \|
cf9feff2 JN	151	SND_SOC_DAIFMT_CBM_CFM,
df205936	152	.init = zoom2_twl4030_voice_init,
a3c6dac2	153	.ops = &zoom2_ops,
df205936 LCM	154	},
	155	};
	156
	157	/* Audio machine driver */
	158	static struct snd_soc_card snd_soc_zoom2 = {
	159	.name = "Zoom2",
b425b884	160	.owner = THIS_MODULE,
df205936 LCM	161	.dai_link = zoom2_dai,
df205936 LCM	162	.num_links = ARRAY_SIZE(zoom2_dai),
1083dbd1 PU	163
	164	.dapm_widgets = zoom2_twl4030_dapm_widgets,
	165	.num_dapm_widgets = ARRAY_SIZE(zoom2_twl4030_dapm_widgets),
	166	.dapm_routes = audio_map,
	167	.num_dapm_routes = ARRAY_SIZE(audio_map),
df205936 LCM	168	};
df205936 LCM	169
df205936 LCM	170	static struct platform_device *zoom2_snd_device;
	171
	172	static int __init zoom2_soc_init(void)
	173	{
	174	int ret;
	175
ec588ae6	176	if (!machine_is_omap_zoom2())
df205936	177	return -ENODEV;
df205936 LCM	178	printk(KERN_INFO "Zoom2 SoC init\n");
	179
	180	zoom2_snd_device = platform_device_alloc("soc-audio", -1);
	181	if (!zoom2_snd_device) {
	182	printk(KERN_ERR "Platform device allocation failed\n");
	183	return -ENOMEM;
	184	}
	185
f0fba2ad	186	platform_set_drvdata(zoom2_snd_device, &snd_soc_zoom2);
df205936 LCM	187	ret = platform_device_add(zoom2_snd_device);
	188	if (ret)
	189	goto err1;
	190
	191	BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0);
	192	gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0);
	193
1b6ebdd7 CVJ	194	BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0);
	195	gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0);
	196
df205936 LCM	197	return 0;
	198
	199	err1:
	200	printk(KERN_ERR "Unable to add platform device\n");
	201	platform_device_put(zoom2_snd_device);
	202
	203	return ret;
	204	}
	205	module_init(zoom2_soc_init);
	206
	207	static void __exit zoom2_soc_exit(void)
	208	{
	209	gpio_free(ZOOM2_HEADSET_MUX_GPIO);
1b6ebdd7	210	gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO);
df205936 LCM	211
	212	platform_device_unregister(zoom2_snd_device);
	213	}
	214	module_exit(zoom2_soc_exit);
	215
	216	MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
	217	MODULE_DESCRIPTION("ALSA SoC Zoom2");
	218	MODULE_LICENSE("GPL");
	219