[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 <mach/hardware.h>

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

#define EVM_CODEC_CLOCK 22579200

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;

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
					 SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;

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

	/* set the codec system clock */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, EVM_CODEC_CLOCK,
					    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,
};

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

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

/* evm audio subsystem */
static struct snd_soc_device evm_snd_devdata = {
	.machine = &snd_soc_machine_evm,
	.platform = &davinci_soc_platform,
	.codec_dev = &soc_codec_dev_aic3x,
	.codec_data = &evm_aic3x_setup,
};

static struct resource evm_snd_resources[] = {
	{
		.start = DAVINCI_MCBSP_BASE,
		.end = DAVINCI_MCBSP_BASE + SZ_8K - 1,
		.flags = IORESOURCE_MEM,
	},
};

static struct evm_snd_platform_data evm_snd_data = {
	.tx_dma_ch	= DM644X_DMACH_MCBSP_TX,
	.rx_dma_ch	= DM644X_DMACH_MCBSP_RX,
};

static struct platform_device *evm_snd_device;

static int __init evm_init(void)
{
	int ret;

	evm_snd_device = platform_device_alloc("soc-audio", 0);
	if (!evm_snd_device)
		return -ENOMEM;

	platform_set_drvdata(evm_snd_device, &evm_snd_devdata);
	evm_snd_devdata.dev = &evm_snd_device->dev;
	evm_snd_device->dev.platform_data = &evm_snd_data;

	ret = platform_device_add_resources(evm_snd_device, evm_snd_resources,
					    ARRAY_SIZE(evm_snd_resources));
	if (ret) {
		platform_device_put(evm_snd_device);
		return ret;
	}

	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>
a09e64fb	23	#include <mach/hardware.h>
310355c1 VB	24
	25	#include "../codecs/tlv320aic3x.h"
	26	#include "davinci-pcm.h"
	27	#include "davinci-i2s.h"
	28
	29	#define EVM_CODEC_CLOCK 22579200
	30
	31	static int evm_hw_params(struct snd_pcm_substream *substream,
	32	struct snd_pcm_hw_params *params)
	33	{
	34	struct snd_soc_pcm_runtime *rtd = substream->private_data;
9cb132d7 LG	35	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
9cb132d7 LG	36	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
310355c1 VB	37	int ret = 0;
	38
	39	/* set codec DAI configuration */
64105cfd	40	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
310355c1 VB	41	SND_SOC_DAIFMT_CBM_CFM);
	42	if (ret < 0)
	43	return ret;
	44
	45	/* set cpu DAI configuration */
64105cfd	46	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM \|
310355c1 VB	47	SND_SOC_DAIFMT_IB_NF);
	48	if (ret < 0)
	49	return ret;
	50
	51	/* set the codec system clock */
64105cfd	52	ret = snd_soc_dai_set_sysclk(codec_dai, 0, EVM_CODEC_CLOCK,
310355c1 VB	53	SND_SOC_CLOCK_OUT);
	54	if (ret < 0)
	55	return ret;
	56
	57	return 0;
	58	}
	59
	60	static struct snd_soc_ops evm_ops = {
	61	.hw_params = evm_hw_params,
	62	};
	63
	64	/* davinci-evm machine dapm widgets */
	65	static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
	66	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	67	SND_SOC_DAPM_LINE("Line Out", NULL),
	68	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	69	SND_SOC_DAPM_LINE("Line In", NULL),
	70	};
	71
	72	/* davinci-evm machine audio_mapnections to the codec pins */
acf497f9	73	static const struct snd_soc_dapm_route audio_map[] = {
310355c1 VB	74	/* Headphone connected to HPLOUT, HPROUT */
	75	{"Headphone Jack", NULL, "HPLOUT"},
	76	{"Headphone Jack", NULL, "HPROUT"},
	77
	78	/* Line Out connected to LLOUT, RLOUT */
	79	{"Line Out", NULL, "LLOUT"},
	80	{"Line Out", NULL, "RLOUT"},
	81
	82	/* Mic connected to (MIC3L \| MIC3R) */
	83	{"MIC3L", NULL, "Mic Bias 2V"},
	84	{"MIC3R", NULL, "Mic Bias 2V"},
	85	{"Mic Bias 2V", NULL, "Mic Jack"},
	86
	87	/* Line In connected to (LINE1L \| LINE2L), (LINE1R \| LINE2R) */
	88	{"LINE1L", NULL, "Line In"},
	89	{"LINE2L", NULL, "Line In"},
	90	{"LINE1R", NULL, "Line In"},
	91	{"LINE2R", NULL, "Line In"},
310355c1 VB	92	};
	93
	94	/* Logic for a aic3x as connected on a davinci-evm */
	95	static int evm_aic3x_init(struct snd_soc_codec *codec)
	96	{
310355c1	97	/* Add davinci-evm specific widgets */
acf497f9 MB	98	snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
acf497f9 MB	99	ARRAY_SIZE(aic3x_dapm_widgets));
310355c1 VB	100
310355c1 VB	101	/* Set up davinci-evm specific audio path audio_map */
acf497f9	102	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
310355c1 VB	103
310355c1 VB	104	/* not connected */
a5302181 LG	105	snd_soc_dapm_disable_pin(codec, "MONO_LOUT");
	106	snd_soc_dapm_disable_pin(codec, "HPLCOM");
	107	snd_soc_dapm_disable_pin(codec, "HPRCOM");
310355c1 VB	108
310355c1 VB	109	/* always connected */
a5302181 LG	110	snd_soc_dapm_enable_pin(codec, "Headphone Jack");
	111	snd_soc_dapm_enable_pin(codec, "Line Out");
	112	snd_soc_dapm_enable_pin(codec, "Mic Jack");
	113	snd_soc_dapm_enable_pin(codec, "Line In");
310355c1	114
a5302181	115	snd_soc_dapm_sync(codec);
310355c1 VB	116
	117	return 0;
	118	}
	119
	120	/* davinci-evm digital audio interface glue - connects codec <--> CPU */
	121	static struct snd_soc_dai_link evm_dai = {
	122	.name = "TLV320AIC3X",
	123	.stream_name = "AIC3X",
	124	.cpu_dai = &davinci_i2s_dai,
	125	.codec_dai = &aic3x_dai,
	126	.init = evm_aic3x_init,
	127	.ops = &evm_ops,
	128	};
	129
	130	/* davinci-evm audio machine driver */
	131	static struct snd_soc_machine snd_soc_machine_evm = {
	132	.name = "DaVinci EVM",
	133	.dai_link = &evm_dai,
	134	.num_links = 1,
	135	};
	136
	137	/* evm audio private data */
	138	static struct aic3x_setup_data evm_aic3x_setup = {
ba8ed121	139	.i2c_bus = 0,
310355c1 VB	140	.i2c_address = 0x1b,
	141	};
	142
	143	/* evm audio subsystem */
	144	static struct snd_soc_device evm_snd_devdata = {
	145	.machine = &snd_soc_machine_evm,
	146	.platform = &davinci_soc_platform,
	147	.codec_dev = &soc_codec_dev_aic3x,
	148	.codec_data = &evm_aic3x_setup,
	149	};
	150
	151	static struct resource evm_snd_resources[] = {
	152	{
	153	.start = DAVINCI_MCBSP_BASE,
	154	.end = DAVINCI_MCBSP_BASE + SZ_8K - 1,
	155	.flags = IORESOURCE_MEM,
	156	},
	157	};
	158
	159	static struct evm_snd_platform_data evm_snd_data = {
	160	.tx_dma_ch = DM644X_DMACH_MCBSP_TX,
	161	.rx_dma_ch = DM644X_DMACH_MCBSP_RX,
	162	};
	163
	164	static struct platform_device *evm_snd_device;
	165
	166	static int __init evm_init(void)
	167	{
	168	int ret;
	169
	170	evm_snd_device = platform_device_alloc("soc-audio", 0);
	171	if (!evm_snd_device)
	172	return -ENOMEM;
	173
	174	platform_set_drvdata(evm_snd_device, &evm_snd_devdata);
	175	evm_snd_devdata.dev = &evm_snd_device->dev;
	176	evm_snd_device->dev.platform_data = &evm_snd_data;
	177
	178	ret = platform_device_add_resources(evm_snd_device, evm_snd_resources,
	179	ARRAY_SIZE(evm_snd_resources));
	180	if (ret) {
	181	platform_device_put(evm_snd_device);
	182	return ret;
	183	}
	184
	185	ret = platform_device_add(evm_snd_device);
	186	if (ret)
	187	platform_device_put(evm_snd_device);
	188
	189	return ret;
	190	}
	191
	192	static void __exit evm_exit(void)
	193	{
	194	platform_device_unregister(evm_snd_device);
	195	}
	196
	197	module_init(evm_init);
	198	module_exit(evm_exit);
	199
	200	MODULE_AUTHOR("Vladimir Barinov");
	201	MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
	202	MODULE_LICENSE("GPL");