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Commit a3a83d9a authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Mark Brown
Browse files

ASoC: Add ak4642/ak4643 codec support 



This is very simple driver for ALSA
It supprt headphone output and stereo input only
This patch is tested by ms7724se

Signed-off-by: default avatarKuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent b2ec22e2

sound/soc/codecs/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_AD73311 if I2C

	select SND_SOC_AK4104 if SPI_MASTER

	select SND_SOC_AK4535 if I2C

	select SND_SOC_AK4642 if I2C

	select SND_SOC_CS4270 if I2C

	select SND_SOC_MAX9877 if I2C

	select SND_SOC_PCM3008
@@ -92,6 +93,9 @@ config SND_SOC_AK4104 
config SND_SOC_AK4535

	tristate



config SND_SOC_AK4642

	tristate



# Cirrus Logic CS4270 Codec

config SND_SOC_CS4270

	tristate

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ snd-soc-ad1980-objs := ad1980.o 
snd-soc-ad73311-objs := ad73311.o

snd-soc-ak4104-objs := ak4104.o

snd-soc-ak4535-objs := ak4535.o

snd-soc-ak4642-objs := ak4642.o

snd-soc-cs4270-objs := cs4270.o

snd-soc-cx20442-objs := cx20442.o

snd-soc-l3-objs := l3.o
@@ -54,6 +55,7 @@ obj-$(CONFIG_SND_SOC_AD1980) += snd-soc-ad1980.o 
obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o

obj-$(CONFIG_SND_SOC_AK4104)	+= snd-soc-ak4104.o

obj-$(CONFIG_SND_SOC_AK4535)	+= snd-soc-ak4535.o

obj-$(CONFIG_SND_SOC_AK4642)	+= snd-soc-ak4642.o

obj-$(CONFIG_SND_SOC_CS4270)	+= snd-soc-cs4270.o

obj-$(CONFIG_SND_SOC_CX20442)	+= snd-soc-cx20442.o

obj-$(CONFIG_SND_SOC_L3)	+= snd-soc-l3.o

sound/soc/codecs/ak4642.c

0 → 100644
+502 −0
Original line number Diff line number Diff line 
/*

 * ak4642.c  --  AK4642/AK4643 ALSA Soc Audio driver

 *

 * Copyright (C) 2009 Renesas Solutions Corp.

 * Kuninori Morimoto <morimoto.kuninori@renesas.com>

 *

 * Based on wm8731.c by Richard Purdie

 * Based on ak4535.c by Richard Purdie

 * Based on wm8753.c by Liam Girdwood

 *

 * 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.

 */



/* ** CAUTION **

 *

 * This is very simple driver.

 * It can use headphone output / stereo input only

 *

 * AK4642 is not tested.

 * AK4643 is tested.

 */



#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/pm.h>

#include <linux/i2c.h>

#include <linux/platform_device.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>

#include <sound/initval.h>



#include "ak4642.h"



#define AK4642_VERSION "0.0.1"



#define PW_MGMT1	0x00

#define PW_MGMT2	0x01

#define SG_SL1		0x02

#define SG_SL2		0x03

#define MD_CTL1		0x04

#define MD_CTL2		0x05

#define TIMER		0x06

#define ALC_CTL1	0x07

#define ALC_CTL2	0x08

#define L_IVC		0x09

#define L_DVC		0x0a

#define ALC_CTL3	0x0b

#define R_IVC		0x0c

#define R_DVC		0x0d

#define MD_CTL3		0x0e

#define MD_CTL4		0x0f

#define PW_MGMT3	0x10

#define DF_S		0x11

#define FIL3_0		0x12

#define FIL3_1		0x13

#define FIL3_2		0x14

#define FIL3_3		0x15

#define EQ_0		0x16

#define EQ_1		0x17

#define EQ_2		0x18

#define EQ_3		0x19

#define EQ_4		0x1a

#define EQ_5		0x1b

#define FIL1_0		0x1c

#define FIL1_1		0x1d

#define FIL1_2		0x1e

#define FIL1_3		0x1f

#define PW_MGMT4	0x20

#define MD_CTL5		0x21

#define LO_MS		0x22

#define HP_MS		0x23

#define SPK_MS		0x24



#define AK4642_CACHEREGNUM 	0x25



struct snd_soc_codec_device soc_codec_dev_ak4642;



/* codec private data */

struct ak4642_priv {

	struct snd_soc_codec codec;

	unsigned int sysclk;

};



static struct snd_soc_codec *ak4642_codec;



/*

 * ak4642 register cache

 */

static const u16 ak4642_reg[AK4642_CACHEREGNUM] = {

	0x0000, 0x0000, 0x0001, 0x0000,

	0x0002, 0x0000, 0x0000, 0x0000,

	0x00e1, 0x00e1, 0x0018, 0x0000,

	0x00e1, 0x0018, 0x0011, 0x0008,

	0x0000, 0x0000, 0x0000, 0x0000,

	0x0000, 0x0000, 0x0000, 0x0000,

	0x0000, 0x0000, 0x0000, 0x0000,

	0x0000, 0x0000, 0x0000, 0x0000,

	0x0000, 0x0000, 0x0000, 0x0000,

	0x0000,

};



/*

 * read ak4642 register cache

 */

static inline unsigned int ak4642_read_reg_cache(struct snd_soc_codec *codec,

	unsigned int reg)

{

	u16 *cache = codec->reg_cache;

	if (reg >= AK4642_CACHEREGNUM)

		return -1;

	return cache[reg];

}



/*

 * write ak4642 register cache

 */

static inline void ak4642_write_reg_cache(struct snd_soc_codec *codec,

	u16 reg, unsigned int value)

{

	u16 *cache = codec->reg_cache;

	if (reg >= AK4642_CACHEREGNUM)

		return;



	cache[reg] = value;

}



/*

 * write to the AK4642 register space

 */

static int ak4642_write(struct snd_soc_codec *codec, unsigned int reg,

	unsigned int value)

{

	u8 data[2];



	/* data is

	 *   D15..D8 AK4642 register offset

	 *   D7...D0 register data

	 */

	data[0] = reg & 0xff;

	data[1] = value & 0xff;



	if (codec->hw_write(codec->control_data, data, 2) == 2) {

		ak4642_write_reg_cache(codec, reg, value);

		return 0;

	} else

		return -EIO;

}



static int ak4642_sync(struct snd_soc_codec *codec)

{

	u16 *cache = codec->reg_cache;

	int i, r = 0;



	for (i = 0; i < AK4642_CACHEREGNUM; i++)

		r |= ak4642_write(codec, i, cache[i]);



	return r;

};



static int ak4642_dai_startup(struct snd_pcm_substream *substream,

			      struct snd_soc_dai *dai)

{

	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;

	struct snd_soc_codec *codec = dai->codec;



	if (is_play) {

		/*

		 * start headphone output

		 *

		 * PLL, Master Mode

		 * Audio I/F Format :MSB justified (ADC & DAC)

		 * Sampling Frequency: 44.1kHz

		 * Digital Volume: −8dB

		 * Bass Boost Level : Middle

		 *

		 * This operation came from example code of

		 * "ASAHI KASEI AK4642" (japanese) manual p97.

		 *

		 * Example code use 0x39, 0x79 value for 0x01 address,

		 * But we need MCKO (0x02) bit now

		 */

		ak4642_write(codec, 0x05, 0x27);

		ak4642_write(codec, 0x0f, 0x09);

		ak4642_write(codec, 0x0e, 0x19);

		ak4642_write(codec, 0x09, 0x91);

		ak4642_write(codec, 0x0c, 0x91);

		ak4642_write(codec, 0x0a, 0x28);

		ak4642_write(codec, 0x0d, 0x28);

		ak4642_write(codec, 0x00, 0x64);

		ak4642_write(codec, 0x01, 0x3b); /* + MCKO bit */

		ak4642_write(codec, 0x01, 0x7b); /* + MCKO bit */

	} else {

		/*

		 * start stereo input

		 *

		 * PLL Master Mode

		 * Audio I/F Format:MSB justified (ADC & DAC)

		 * Sampling Frequency:44.1kHz

		 * Pre MIC AMP:+20dB

		 * MIC Power On

		 * ALC setting:Refer to Table 35

		 * ALC bit=“1”

		 *

		 * This operation came from example code of

		 * "ASAHI KASEI AK4642" (japanese) manual p94.

		 */

		ak4642_write(codec, 0x05, 0x27);

		ak4642_write(codec, 0x02, 0x05);

		ak4642_write(codec, 0x06, 0x3c);

		ak4642_write(codec, 0x08, 0xe1);

		ak4642_write(codec, 0x0b, 0x00);

		ak4642_write(codec, 0x07, 0x21);

		ak4642_write(codec, 0x00, 0x41);

		ak4642_write(codec, 0x10, 0x01);

	}



	return 0;

}



static void ak4642_dai_shutdown(struct snd_pcm_substream *substream,

			       struct snd_soc_dai *dai)

{

	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;

	struct snd_soc_codec *codec = dai->codec;



	if (is_play) {

		/* stop headphone output */

		ak4642_write(codec, 0x01, 0x3b);

		ak4642_write(codec, 0x01, 0x0b);

		ak4642_write(codec, 0x00, 0x40);

		ak4642_write(codec, 0x0e, 0x11);

		ak4642_write(codec, 0x0f, 0x08);

	} else {

		/* stop stereo input */

		ak4642_write(codec, 0x00, 0x40);

		ak4642_write(codec, 0x10, 0x00);

		ak4642_write(codec, 0x07, 0x01);

	}

}



static int ak4642_dai_set_sysclk(struct snd_soc_dai *codec_dai,

	int clk_id, unsigned int freq, int dir)

{

	struct snd_soc_codec *codec = codec_dai->codec;

	struct ak4642_priv *ak4642 = codec->private_data;



	ak4642->sysclk = freq;

	return 0;

}



static struct snd_soc_dai_ops ak4642_dai_ops = {

	.startup	= ak4642_dai_startup,

	.shutdown	= ak4642_dai_shutdown,

	.set_sysclk	= ak4642_dai_set_sysclk,

};



struct snd_soc_dai ak4642_dai = {

	.name = "AK4642",

	.playback = {

		.stream_name = "Playback",

		.channels_min = 1,

		.channels_max = 2,

		.rates = SNDRV_PCM_RATE_8000_48000,

		.formats = SNDRV_PCM_FMTBIT_S16_LE },

	.capture = {

		.stream_name = "Capture",

		.channels_min = 1,

		.channels_max = 2,

		.rates = SNDRV_PCM_RATE_8000_48000,

		.formats = SNDRV_PCM_FMTBIT_S16_LE },

	.ops = &ak4642_dai_ops,

};

EXPORT_SYMBOL_GPL(ak4642_dai);



static int ak4642_resume(struct platform_device *pdev)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	struct snd_soc_codec *codec = socdev->card->codec;



	ak4642_sync(codec);

	return 0;

}



/*

 * initialise the AK4642 driver

 * register the mixer and dsp interfaces with the kernel

 */

static int ak4642_init(struct ak4642_priv *ak4642)

{

	struct snd_soc_codec *codec = &ak4642->codec;

	int ret = 0;



	if (ak4642_codec) {

		dev_err(codec->dev, "Another ak4642 is registered\n");

		return -EINVAL;

	}



	mutex_init(&codec->mutex);

	INIT_LIST_HEAD(&codec->dapm_widgets);

	INIT_LIST_HEAD(&codec->dapm_paths);



	codec->private_data	= ak4642;

	codec->name		= "AK4642";

	codec->owner		= THIS_MODULE;

	codec->read		= ak4642_read_reg_cache;

	codec->write		= ak4642_write;

	codec->dai		= &ak4642_dai;

	codec->num_dai		= 1;

	codec->hw_write		= (hw_write_t)i2c_master_send;

	codec->reg_cache_size	= ARRAY_SIZE(ak4642_reg);

	codec->reg_cache	= kmemdup(ak4642_reg,

					  sizeof(ak4642_reg), GFP_KERNEL);



	if (!codec->reg_cache)

		return -ENOMEM;



	ak4642_dai.dev = codec->dev;

	ak4642_codec = codec;



	ret = snd_soc_register_codec(codec);

	if (ret) {

		dev_err(codec->dev, "Failed to register codec: %d\n", ret);

		goto reg_cache_err;

	}



	ret = snd_soc_register_dai(&ak4642_dai);

	if (ret) {

		dev_err(codec->dev, "Failed to register DAI: %d\n", ret);

		snd_soc_unregister_codec(codec);

		goto reg_cache_err;

	}



	/*

	 * clock setting

	 *

	 * Audio I/F Format: MSB justified (ADC & DAC)

	 * BICK frequency at Master Mode: 64fs

	 * Input Master Clock Select at PLL Mode: 11.2896MHz

	 * MCKO: Enable

	 * Sampling Frequency: 44.1kHz

	 *

	 * This operation came from example code of

	 * "ASAHI KASEI AK4642" (japanese) manual p89.

	 *

	 * please fix-me

	 */

	ak4642_write(codec, 0x01, 0x08);

	ak4642_write(codec, 0x04, 0x4a);

	ak4642_write(codec, 0x05, 0x27);

	ak4642_write(codec, 0x00, 0x40);

	ak4642_write(codec, 0x01, 0x0b);



	return ret;



reg_cache_err:

	kfree(codec->reg_cache);

	codec->reg_cache = NULL;



	return ret;

}



#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)

static int ak4642_i2c_probe(struct i2c_client *i2c,

			    const struct i2c_device_id *id)

{

	struct ak4642_priv *ak4642;

	struct snd_soc_codec *codec;

	int ret;



	ak4642 = kzalloc(sizeof(struct ak4642_priv), GFP_KERNEL);

	if (!ak4642)

		return -ENOMEM;



	codec = &ak4642->codec;

	codec->dev = &i2c->dev;



	i2c_set_clientdata(i2c, ak4642);

	codec->control_data = i2c;



	ret = ak4642_init(ak4642);

	if (ret < 0)

		printk(KERN_ERR "failed to initialise AK4642\n");



	return ret;

}



static int ak4642_i2c_remove(struct i2c_client *client)

{

	struct ak4642_priv *ak4642 = i2c_get_clientdata(client);



	snd_soc_unregister_dai(&ak4642_dai);

	snd_soc_unregister_codec(&ak4642->codec);

	kfree(ak4642->codec.reg_cache);

	kfree(ak4642);

	ak4642_codec = NULL;



	return 0;

}



static const struct i2c_device_id ak4642_i2c_id[] = {

	{ "ak4642", 0 },

	{ "ak4643", 0 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, ak4642_i2c_id);



static struct i2c_driver ak4642_i2c_driver = {

	.driver = {

		.name = "AK4642 I2C Codec",

		.owner = THIS_MODULE,

	},

	.probe		= ak4642_i2c_probe,

	.remove		= ak4642_i2c_remove,

	.id_table	= ak4642_i2c_id,

};



#endif



static int ak4642_probe(struct platform_device *pdev)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	int ret;



	if (!ak4642_codec) {

		dev_err(&pdev->dev, "Codec device not registered\n");

		return -ENODEV;

	}



	socdev->card->codec = ak4642_codec;



	/* register pcms */

	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);

	if (ret < 0) {

		printk(KERN_ERR "ak4642: failed to create pcms\n");

		goto pcm_err;

	}



	ret = snd_soc_init_card(socdev);

	if (ret < 0) {

		printk(KERN_ERR "ak4642: failed to register card\n");

		goto card_err;

	}



	dev_info(&pdev->dev, "AK4642 Audio Codec %s", AK4642_VERSION);

	return ret;



card_err:

	snd_soc_free_pcms(socdev);

	snd_soc_dapm_free(socdev);

pcm_err:

	return ret;



}



/* power down chip */

static int ak4642_remove(struct platform_device *pdev)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);



	snd_soc_free_pcms(socdev);

	snd_soc_dapm_free(socdev);



	return 0;

}



struct snd_soc_codec_device soc_codec_dev_ak4642 = {

	.probe =	ak4642_probe,

	.remove =	ak4642_remove,

	.resume =	ak4642_resume,

};

EXPORT_SYMBOL_GPL(soc_codec_dev_ak4642);



static int __init ak4642_modinit(void)

{

	int ret;

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)

	ret = i2c_add_driver(&ak4642_i2c_driver);

#endif

	return ret;



}

module_init(ak4642_modinit);



static void __exit ak4642_exit(void)

{

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)

	i2c_del_driver(&ak4642_i2c_driver);

#endif



}

module_exit(ak4642_exit);



MODULE_DESCRIPTION("Soc AK4642 driver");

MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>");

MODULE_LICENSE("GPL");

sound/soc/codecs/ak4642.h

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Original line number Diff line number Diff line 
/*

 * ak4642.h  --  AK4642 Soc Audio driver

 *

 * Copyright (C) 2009 Renesas Solutions Corp.

 * Kuninori Morimoto <morimoto.kuninori@renesas.com>

 *

 * Based on ak4535.c

 *

 * 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.

 */



#ifndef _AK4642_H

#define _AK4642_H



extern struct snd_soc_dai ak4642_dai;

extern struct snd_soc_codec_device soc_codec_dev_ak4642;



#endif