[deliverable/linux.git] / sound / soc / davinci / davinci-evm.c

/*
 * ASoC driver for TI DAVINCI EVM platform
 *
 * Author:      Vladimir Barinov, <vbarinov@embeddedalley.com>
 * Copyright:   (C) 2007 MontaVista Software, Inc., <source@mvista.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.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.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/dma.h>
#include <asm/mach-types.h>

#include <mach/asp.h>
#include <mach/edma.h>
#include <mach/mux.h>

#include "../codecs/tlv320aic3x.h"
#include "../codecs/spdif_transciever.h"
#include "davinci-pcm.h"
#include "davinci-i2s.h"
#include "davinci-mcasp.h"

#define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
		SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF)
static int evm_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 = 0;
	unsigned sysclk;

	/* ASP1 on DM355 EVM is clocked by an external oscillator */
	if (machine_is_davinci_dm355_evm() || machine_is_davinci_dm6467_evm())
		sysclk = 27000000;

	/* ASP0 in DM6446 EVM is clocked by U55, as configured by
	 * board-dm644x-evm.c using GPIOs from U18.  There are six
	 * options; here we "know" we use a 48 KHz sample rate.
	 */
	else if (machine_is_davinci_evm())
		sysclk = 12288000;

	else
		return -EINVAL;

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
	if (ret < 0)
		return ret;

	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
	if (ret < 0)
		return ret;

	/* set the codec system clock */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops evm_ops = {
	.hw_params = evm_hw_params,
};

/* davinci-evm machine dapm widgets */
static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_LINE("Line Out", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_LINE("Line In", NULL),
};

/* davinci-evm machine audio_mapnections to the codec pins */
static const struct snd_soc_dapm_route audio_map[] = {
	/* Headphone connected to HPLOUT, HPROUT */
	{"Headphone Jack", NULL, "HPLOUT"},
	{"Headphone Jack", NULL, "HPROUT"},

	/* Line Out connected to LLOUT, RLOUT */
	{"Line Out", NULL, "LLOUT"},
	{"Line Out", NULL, "RLOUT"},

	/* Mic connected to (MIC3L | MIC3R) */
	{"MIC3L", NULL, "Mic Bias 2V"},
	{"MIC3R", NULL, "Mic Bias 2V"},
	{"Mic Bias 2V", NULL, "Mic Jack"},

	/* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
	{"LINE1L", NULL, "Line In"},
	{"LINE2L", NULL, "Line In"},
	{"LINE1R", NULL, "Line In"},
	{"LINE2R", NULL, "Line In"},
};

/* Logic for a aic3x as connected on a davinci-evm */
static int evm_aic3x_init(struct snd_soc_codec *codec)
{
	/* Add davinci-evm specific widgets */
	snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
				  ARRAY_SIZE(aic3x_dapm_widgets));

	/* Set up davinci-evm specific audio path audio_map */
	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

	/* not connected */
	snd_soc_dapm_disable_pin(codec, "MONO_LOUT");
	snd_soc_dapm_disable_pin(codec, "HPLCOM");
	snd_soc_dapm_disable_pin(codec, "HPRCOM");

	/* always connected */
	snd_soc_dapm_enable_pin(codec, "Headphone Jack");
	snd_soc_dapm_enable_pin(codec, "Line Out");
	snd_soc_dapm_enable_pin(codec, "Mic Jack");
	snd_soc_dapm_enable_pin(codec, "Line In");

	snd_soc_dapm_sync(codec);

	return 0;
}

/* davinci-evm digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link evm_dai = {
	.name = "TLV320AIC3X",
	.stream_name = "AIC3X",
	.cpu_dai = &davinci_i2s_dai,
	.codec_dai = &aic3x_dai,
	.init = evm_aic3x_init,
	.ops = &evm_ops,
};

static struct snd_soc_dai_link dm6467_evm_dai[] = {
	{
		.name = "TLV320AIC3X",
		.stream_name = "AIC3X",
		.cpu_dai = &davinci_mcasp_dai[DAVINCI_MCASP_I2S_DAI],
		.codec_dai = &aic3x_dai,
		.init = evm_aic3x_init,
		.ops = &evm_ops,
	},
	{
		.name = "McASP",
		.stream_name = "spdif",
		.cpu_dai = &davinci_mcasp_dai[DAVINCI_MCASP_DIT_DAI],
		.codec_dai = &dit_stub_dai,
		.ops = &evm_ops,
	},
};

/* davinci-evm audio machine driver */
static struct snd_soc_card snd_soc_card_evm = {
	.name = "DaVinci EVM",
	.platform = &davinci_soc_platform,
	.dai_link = &evm_dai,
	.num_links = 1,
};

/* davinci dm6467 evm audio machine driver */
static struct snd_soc_card dm6467_snd_soc_card_evm = {
	.name = "DaVinci DM6467 EVM",
	.platform = &davinci_soc_platform,
	.dai_link = dm6467_evm_dai,
	.num_links = ARRAY_SIZE(dm6467_evm_dai),
};

/* evm audio private data */
static struct aic3x_setup_data evm_aic3x_setup = {
	.i2c_bus = 1,
	.i2c_address = 0x1b,
};

/* dm6467 evm audio private data */
static struct aic3x_setup_data dm6467_evm_aic3x_setup = {
       .i2c_bus = 1,
       .i2c_address = 0x18,
};

/* evm audio subsystem */
static struct snd_soc_device evm_snd_devdata = {
	.card = &snd_soc_card_evm,
	.codec_dev = &soc_codec_dev_aic3x,
	.codec_data = &evm_aic3x_setup,
};

/* evm audio subsystem */
static struct snd_soc_device dm6467_evm_snd_devdata = {
	.card = &dm6467_snd_soc_card_evm,
	.codec_dev = &soc_codec_dev_aic3x,
	.codec_data = &dm6467_evm_aic3x_setup,
};

static struct platform_device *evm_snd_device;

static int __init evm_init(void)
{
	struct snd_soc_device *evm_snd_dev_data;
	int index;
	int ret;

	if (machine_is_davinci_evm()) {
		evm_snd_dev_data = &evm_snd_devdata;
		index = 0;
	} else if (machine_is_davinci_dm355_evm()) {
		evm_snd_dev_data = &evm_snd_devdata;
		index = 1;
	} else if (machine_is_davinci_dm6467_evm()) {
		evm_snd_dev_data = &dm6467_evm_snd_devdata;
		index = 0;
	} else
		return -EINVAL;

	evm_snd_device = platform_device_alloc("soc-audio", index);
	if (!evm_snd_device)
		return -ENOMEM;

	platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
	evm_snd_dev_data->dev = &evm_snd_device->dev;
	ret = platform_device_add(evm_snd_device);
	if (ret)
		platform_device_put(evm_snd_device);

	return ret;
}

static void __exit evm_exit(void)
{
	platform_device_unregister(evm_snd_device);
}

module_init(evm_init);
module_exit(evm_exit);

MODULE_AUTHOR("Vladimir Barinov");
MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
310355c1 VB	1	/*
	2	* ASoC driver for TI DAVINCI EVM platform
	3	*
d6b52039	4	* Author: Vladimir Barinov, <vbarinov@embeddedalley.com>
310355c1 VB	5	* Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
	12	#include <linux/module.h>
	13	#include <linux/moduleparam.h>
	14	#include <linux/timer.h>
	15	#include <linux/interrupt.h>
	16	#include <linux/platform_device.h>
	17	#include <sound/core.h>
	18	#include <sound/pcm.h>
	19	#include <sound/soc.h>
	20	#include <sound/soc-dapm.h>
	21
310355c1	22	#include <asm/dma.h>
f492ec9f DB	23	#include <asm/mach-types.h>
	24
	25	#include <mach/asp.h>
	26	#include <mach/edma.h>
	27	#include <mach/mux.h>
310355c1 VB	28
310355c1 VB	29	#include "../codecs/tlv320aic3x.h"
04f80f5c	30	#include "../codecs/spdif_transciever.h"
310355c1 VB	31	#include "davinci-pcm.h"
310355c1 VB	32	#include "davinci-i2s.h"
04f80f5c	33	#include "davinci-mcasp.h"
310355c1	34
d6f83396 TK	35	#define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B \| \
d6f83396 TK	36	SND_SOC_DAIFMT_CBM_CFM \| SND_SOC_DAIFMT_IB_NF)
310355c1 VB	37	static int evm_hw_params(struct snd_pcm_substream *substream,
	38	struct snd_pcm_hw_params *params)
	39	{
	40	struct snd_soc_pcm_runtime *rtd = substream->private_data;
9cb132d7 LG	41	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
9cb132d7 LG	42	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
310355c1	43	int ret = 0;
05d5e991 DB	44	unsigned sysclk;
	45
	46	/* ASP1 on DM355 EVM is clocked by an external oscillator */
04f80f5c	47	if (machine_is_davinci_dm355_evm() \|\| machine_is_davinci_dm6467_evm())
05d5e991 DB	48	sysclk = 27000000;
	49
	50	/* ASP0 in DM6446 EVM is clocked by U55, as configured by
	51	* board-dm644x-evm.c using GPIOs from U18. There are six
	52	* options; here we "know" we use a 48 KHz sample rate.
	53	*/
	54	else if (machine_is_davinci_evm())
	55	sysclk = 12288000;
	56
	57	else
	58	return -EINVAL;
310355c1 VB	59
310355c1 VB	60	/* set codec DAI configuration */
9e031624	61	ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
310355c1 VB	62	if (ret < 0)
	63	return ret;
	64
	65	/* set cpu DAI configuration */
9e031624	66	ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
310355c1 VB	67	if (ret < 0)
	68	return ret;
	69
	70	/* set the codec system clock */
05d5e991	71	ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
310355c1 VB	72	if (ret < 0)
	73	return ret;
	74
	75	return 0;
	76	}
	77
	78	static struct snd_soc_ops evm_ops = {
	79	.hw_params = evm_hw_params,
	80	};
	81
	82	/* davinci-evm machine dapm widgets */
	83	static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
	84	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	85	SND_SOC_DAPM_LINE("Line Out", NULL),
	86	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	87	SND_SOC_DAPM_LINE("Line In", NULL),
	88	};
	89
	90	/* davinci-evm machine audio_mapnections to the codec pins */
acf497f9	91	static const struct snd_soc_dapm_route audio_map[] = {
310355c1 VB	92	/* Headphone connected to HPLOUT, HPROUT */
	93	{"Headphone Jack", NULL, "HPLOUT"},
	94	{"Headphone Jack", NULL, "HPROUT"},
	95
	96	/* Line Out connected to LLOUT, RLOUT */
	97	{"Line Out", NULL, "LLOUT"},
	98	{"Line Out", NULL, "RLOUT"},
	99
	100	/* Mic connected to (MIC3L \| MIC3R) */
	101	{"MIC3L", NULL, "Mic Bias 2V"},
	102	{"MIC3R", NULL, "Mic Bias 2V"},
	103	{"Mic Bias 2V", NULL, "Mic Jack"},
	104
	105	/* Line In connected to (LINE1L \| LINE2L), (LINE1R \| LINE2R) */
	106	{"LINE1L", NULL, "Line In"},
	107	{"LINE2L", NULL, "Line In"},
	108	{"LINE1R", NULL, "Line In"},
	109	{"LINE2R", NULL, "Line In"},
310355c1 VB	110	};
	111
	112	/* Logic for a aic3x as connected on a davinci-evm */
	113	static int evm_aic3x_init(struct snd_soc_codec *codec)
	114	{
310355c1	115	/* Add davinci-evm specific widgets */
acf497f9 MB	116	snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
acf497f9 MB	117	ARRAY_SIZE(aic3x_dapm_widgets));
310355c1 VB	118
310355c1 VB	119	/* Set up davinci-evm specific audio path audio_map */
acf497f9	120	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
310355c1 VB	121
310355c1 VB	122	/* not connected */
a5302181 LG	123	snd_soc_dapm_disable_pin(codec, "MONO_LOUT");
	124	snd_soc_dapm_disable_pin(codec, "HPLCOM");
	125	snd_soc_dapm_disable_pin(codec, "HPRCOM");
310355c1 VB	126
310355c1 VB	127	/* always connected */
a5302181 LG	128	snd_soc_dapm_enable_pin(codec, "Headphone Jack");
	129	snd_soc_dapm_enable_pin(codec, "Line Out");
	130	snd_soc_dapm_enable_pin(codec, "Mic Jack");
	131	snd_soc_dapm_enable_pin(codec, "Line In");
310355c1	132
a5302181	133	snd_soc_dapm_sync(codec);
310355c1 VB	134
	135	return 0;
	136	}
	137
	138	/* davinci-evm digital audio interface glue - connects codec <--> CPU */
	139	static struct snd_soc_dai_link evm_dai = {
	140	.name = "TLV320AIC3X",
	141	.stream_name = "AIC3X",
	142	.cpu_dai = &davinci_i2s_dai,
	143	.codec_dai = &aic3x_dai,
	144	.init = evm_aic3x_init,
	145	.ops = &evm_ops,
	146	};
	147
04f80f5c C	148	static struct snd_soc_dai_link dm6467_evm_dai[] = {
	149	{
	150	.name = "TLV320AIC3X",
	151	.stream_name = "AIC3X",
	152	.cpu_dai = &davinci_mcasp_dai[DAVINCI_MCASP_I2S_DAI],
	153	.codec_dai = &aic3x_dai,
	154	.init = evm_aic3x_init,
	155	.ops = &evm_ops,
	156	},
	157	{
	158	.name = "McASP",
	159	.stream_name = "spdif",
	160	.cpu_dai = &davinci_mcasp_dai[DAVINCI_MCASP_DIT_DAI],
	161	.codec_dai = &dit_stub_dai,
	162	.ops = &evm_ops,
	163	},
	164	};
	165
310355c1	166	/* davinci-evm audio machine driver */
87506549	167	static struct snd_soc_card snd_soc_card_evm = {
310355c1	168	.name = "DaVinci EVM",
87689d56	169	.platform = &davinci_soc_platform,
310355c1 VB	170	.dai_link = &evm_dai,
	171	.num_links = 1,
	172	};
	173
04f80f5c C	174	/* davinci dm6467 evm audio machine driver */
	175	static struct snd_soc_card dm6467_snd_soc_card_evm = {
	176	.name = "DaVinci DM6467 EVM",
	177	.platform = &davinci_soc_platform,
	178	.dai_link = dm6467_evm_dai,
	179	.num_links = ARRAY_SIZE(dm6467_evm_dai),
	180	};
	181
310355c1 VB	182	/* evm audio private data */
310355c1 VB	183	static struct aic3x_setup_data evm_aic3x_setup = {
f492ec9f	184	.i2c_bus = 1,
310355c1 VB	185	.i2c_address = 0x1b,
	186	};
	187
04f80f5c C	188	/* dm6467 evm audio private data */
	189	static struct aic3x_setup_data dm6467_evm_aic3x_setup = {
	190	.i2c_bus = 1,
	191	.i2c_address = 0x18,
	192	};
	193
310355c1 VB	194	/* evm audio subsystem */
310355c1 VB	195	static struct snd_soc_device evm_snd_devdata = {
87506549	196	.card = &snd_soc_card_evm,
310355c1 VB	197	.codec_dev = &soc_codec_dev_aic3x,
	198	.codec_data = &evm_aic3x_setup,
	199	};
	200
04f80f5c C	201	/* evm audio subsystem */
	202	static struct snd_soc_device dm6467_evm_snd_devdata = {
	203	.card = &dm6467_snd_soc_card_evm,
	204	.codec_dev = &soc_codec_dev_aic3x,
	205	.codec_data = &dm6467_evm_aic3x_setup,
310355c1 VB	206	};
	207
	208	static struct platform_device *evm_snd_device;
	209
	210	static int __init evm_init(void)
	211	{
04f80f5c	212	struct snd_soc_device *evm_snd_dev_data;
f492ec9f	213	int index;
310355c1 VB	214	int ret;
310355c1 VB	215
f492ec9f	216	if (machine_is_davinci_evm()) {
04f80f5c	217	evm_snd_dev_data = &evm_snd_devdata;
f492ec9f DB	218	index = 0;
f492ec9f DB	219	} else if (machine_is_davinci_dm355_evm()) {
04f80f5c	220	evm_snd_dev_data = &evm_snd_devdata;
f492ec9f	221	index = 1;
04f80f5c C	222	} else if (machine_is_davinci_dm6467_evm()) {
	223	evm_snd_dev_data = &dm6467_evm_snd_devdata;
	224	index = 0;
f492ec9f DB	225	} else
	226	return -EINVAL;
	227
	228	evm_snd_device = platform_device_alloc("soc-audio", index);
310355c1 VB	229	if (!evm_snd_device)
	230	return -ENOMEM;
	231
04f80f5c C	232	platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
04f80f5c C	233	evm_snd_dev_data->dev = &evm_snd_device->dev;
310355c1 VB	234	ret = platform_device_add(evm_snd_device);
	235	if (ret)
	236	platform_device_put(evm_snd_device);
	237
	238	return ret;
	239	}
	240
	241	static void __exit evm_exit(void)
	242	{
	243	platform_device_unregister(evm_snd_device);
	244	}
	245
	246	module_init(evm_init);
	247	module_exit(evm_exit);
	248
	249	MODULE_AUTHOR("Vladimir Barinov");
	250	MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
	251	MODULE_LICENSE("GPL");