[ALSA] Davinci ASoC support

source "sound/soc/s3c24xx/Kconfig"

source "sound/soc/sh/Kconfig"

source "sound/soc/fsl/Kconfig"

source "sound/soc/davinci/Kconfig"

# Supported codecs

source "sound/soc/codecs/Kconfig"

snd-soc-core-objs := soc-core.o soc-dapm.o

obj-$(CONFIG_SND_SOC)	+= snd-soc-core.o

obj-$(CONFIG_SND_SOC)	+= codecs/ at91/ pxa/ s3c24xx/ sh/ fsl/

obj-$(CONFIG_SND_SOC)	+= codecs/ at91/ pxa/ s3c24xx/ sh/ fsl/ davinci/

config SND_DAVINCI_SOC

	tristate "SoC Audio for the TI DAVINCI chip"

	depends on ARCH_DAVINCI && SND_SOC

	help

	  Say Y or M if you want to add support for codecs attached to

	  the DAVINCI AC97 or I2S interface. You will also need

	  to select the audio interfaces to support below.

config SND_DAVINCI_SOC_I2S

	tristate

config SND_DAVINCI_SOC_EVM

	tristate "SoC Audio support for DaVinci EVM"

	depends on SND_DAVINCI_SOC && MACH_DAVINCI_EVM

	select SND_DAVINCI_SOC_I2S

	select SND_SOC_TLV320AIC3X

	help

	  Say Y if you want to add support for SoC audio on TI

	  DaVinci EVM platform.

# DAVINCI Platform Support

snd-soc-davinci-objs := davinci-pcm.o

snd-soc-davinci-i2s-objs := davinci-i2s.o

obj-$(CONFIG_SND_DAVINCI_SOC) += snd-soc-davinci.o

obj-$(CONFIG_SND_DAVINCI_SOC_I2S) += snd-soc-davinci-i2s.o

# DAVINCI Machine Support

snd-soc-evm-objs := davinci-evm.o

obj-$(CONFIG_SND_DAVINCI_SOC_EVM) += snd-soc-evm.o

/*

 * ASoC driver for TI DAVINCI EVM platform

 *

 * Author:      Vladimir Barinov, <vbarinov@ru.mvista.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/mach-types.h>

#include <asm/dma.h>

#include <asm/arch/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_codec_dai *codec_dai = rtd->dai->codec_dai;

	struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;

	int ret = 0;

	/* set codec DAI configuration */

	ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |

					 SND_SOC_DAIFMT_CBM_CFM);

	if (ret < 0)

		return ret;

	/* set cpu DAI configuration */

	ret = cpu_dai->dai_ops.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 = codec_dai->dai_ops.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 char *audio_map[][3] = {

	/* 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"},

	{NULL, NULL, NULL},

};

/* Logic for a aic3x as connected on a davinci-evm */

static int evm_aic3x_init(struct snd_soc_codec *codec)

{

	int i;

	/* Add davinci-evm specific widgets */

	for (i = 0; i < ARRAY_SIZE(aic3x_dapm_widgets); i++)

		snd_soc_dapm_new_control(codec, &aic3x_dapm_widgets[i]);

	/* Set up davinci-evm specific audio path audio_map */

	for (i = 0; audio_map[i][0] != NULL; i++)

		snd_soc_dapm_connect_input(codec, audio_map[i][0],

					   audio_map[i][1], audio_map[i][2]);

	/* not connected */

	snd_soc_dapm_set_endpoint(codec, "MONO_LOUT", 0);

	snd_soc_dapm_set_endpoint(codec, "HPLCOM", 0);

	snd_soc_dapm_set_endpoint(codec, "HPRCOM", 0);

	/* always connected */

	snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);

	snd_soc_dapm_set_endpoint(codec, "Line Out", 1);

	snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);

	snd_soc_dapm_set_endpoint(codec, "Line In", 1);

	snd_soc_dapm_sync_endpoints(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_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");