[deliverable/linux.git] / sound / soc / codecs / da7210.c

/*
 * DA7210 ALSA Soc codec driver
 *
 * Copyright (c) 2009 Dialog Semiconductor
 * Written by David Chen <Dajun.chen@diasemi.com>
 *
 * Copyright (C) 2009 Renesas Solutions Corp.
 * Cleanups by Kuninori Morimoto <morimoto.kuninori@renesas.com>
 *
 * Tested on SuperH Ecovec24 board with S16/S24 LE in 48KHz using I2S
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.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/tlv.h>
#include <sound/initval.h>
#include <asm/div64.h>

#include "da7210.h"

/* DA7210 register space */
#define DA7210_STATUS			0x02
#define DA7210_STARTUP1			0x03
#define DA7210_MIC_L			0x07
#define DA7210_MIC_R			0x08
#define DA7210_INMIX_L			0x0D
#define DA7210_INMIX_R			0x0E
#define DA7210_ADC_HPF			0x0F
#define DA7210_ADC			0x10
#define DA7210_DAC_HPF			0x14
#define DA7210_DAC_L			0x15
#define DA7210_DAC_R			0x16
#define DA7210_DAC_SEL			0x17
#define DA7210_OUTMIX_L			0x1C
#define DA7210_OUTMIX_R			0x1D
#define DA7210_HP_L_VOL			0x21
#define DA7210_HP_R_VOL			0x22
#define DA7210_HP_CFG			0x23
#define DA7210_DAI_SRC_SEL		0x25
#define DA7210_DAI_CFG1			0x26
#define DA7210_DAI_CFG3			0x28
#define DA7210_PLL_DIV3			0x2B
#define DA7210_PLL			0x2C

/* STARTUP1 bit fields */
#define DA7210_SC_MST_EN		(1 << 0)

/* MIC_L bit fields */
#define DA7210_MICBIAS_EN		(1 << 6)
#define DA7210_MIC_L_EN			(1 << 7)

/* MIC_R bit fields */
#define DA7210_MIC_R_EN			(1 << 7)

/* INMIX_L bit fields */
#define DA7210_IN_L_EN			(1 << 7)

/* INMIX_R bit fields */
#define DA7210_IN_R_EN			(1 << 7)

/* ADC_HPF bit fields */
#define DA7210_ADC_VOICE_EN		(1 << 7)

/* ADC bit fields */
#define DA7210_ADC_L_EN			(1 << 3)
#define DA7210_ADC_R_EN			(1 << 7)

/* DAC_HPF fields */
#define DA7210_DAC_VOICE_EN		(1 << 7)

/* DAC_SEL bit fields */
#define DA7210_DAC_L_SRC_DAI_L		(4 << 0)
#define DA7210_DAC_L_EN			(1 << 3)
#define DA7210_DAC_R_SRC_DAI_R		(5 << 4)
#define DA7210_DAC_R_EN			(1 << 7)

/* OUTMIX_L bit fields */
#define DA7210_OUT_L_EN			(1 << 7)

/* OUTMIX_R bit fields */
#define DA7210_OUT_R_EN			(1 << 7)

/* HP_CFG bit fields */
#define DA7210_HP_2CAP_MODE		(1 << 1)
#define DA7210_HP_SENSE_EN		(1 << 2)
#define DA7210_HP_L_EN			(1 << 3)
#define DA7210_HP_MODE			(1 << 6)
#define DA7210_HP_R_EN			(1 << 7)

/* DAI_SRC_SEL bit fields */
#define DA7210_DAI_OUT_L_SRC		(6 << 0)
#define DA7210_DAI_OUT_R_SRC		(7 << 4)

/* DAI_CFG1 bit fields */
#define DA7210_DAI_WORD_S16_LE		(0 << 0)
#define DA7210_DAI_WORD_S24_LE		(2 << 0)
#define DA7210_DAI_FLEN_64BIT		(1 << 2)
#define DA7210_DAI_MODE_MASTER		(1 << 7)

/* DAI_CFG3 bit fields */
#define DA7210_DAI_FORMAT_I2SMODE	(0 << 0)
#define DA7210_DAI_OE			(1 << 3)
#define DA7210_DAI_EN			(1 << 7)

/*PLL_DIV3 bit fields */
#define DA7210_MCLK_RANGE_10_20_MHZ	(1 << 4)
#define DA7210_PLL_BYP			(1 << 6)

/* PLL bit fields */
#define DA7210_PLL_FS_48000		(11 << 0)

#define DA7210_VERSION "0.0.1"

/* Codec private data */
struct da7210_priv {
	struct snd_soc_codec codec;
};

static struct snd_soc_codec *da7210_codec;

/*
 * Register cache
 */
static const u8 da7210_reg[] = {
	0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R0  - R7  */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08,	/* R8  - RF  */
	0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54,	/* R10 - R17 */
	0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R18 - R1F */
	0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00,	/* R20 - R27 */
	0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00,	/* R28 - R2F */
	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00,	/* R30 - R37 */
	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00,	/* R38 - R3F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R40 - R4F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R48 - R4F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R50 - R57 */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R58 - R5F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R60 - R67 */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R68 - R6F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R70 - R77 */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00,	/* R78 - R7F */
	0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R80 - R87 */
	0x00,						/* R88       */
};

/*
 * Read da7210 register cache
 */
static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
{
	u8 *cache = codec->reg_cache;
	BUG_ON(reg > ARRAY_SIZE(da7210_reg));
	return cache[reg];
}

/*
 * Write to the da7210 register space
 */
static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
{
	u8 *cache = codec->reg_cache;
	u8 data[2];

	BUG_ON(codec->volatile_register);

	data[0] = reg & 0xff;
	data[1] = value & 0xff;

	if (reg >= codec->reg_cache_size)
		return -EIO;

	if (2 != codec->hw_write(codec->control_data, data, 2))
		return -EIO;

	cache[reg] = value;
	return 0;
}

/*
 * Read from the da7210 register space.
 */
static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
{
	if (DA7210_STATUS == reg)
		return i2c_smbus_read_byte_data(codec->control_data, reg);

	return da7210_read_reg_cache(codec, reg);
}

static int da7210_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) {
		/* PlayBack Volume 40 */
		snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
		snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);

		/* Enable Out */
		snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
		snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);

	} else {
		/* Volume 7 */
		snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
		snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);

		/* Enable Mic */
		snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
		snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
	}

	return 0;
}

/*
 * Set PCM DAI word length.
 */
static int da7210_hw_params(struct snd_pcm_substream *substream,
			    struct snd_pcm_hw_params *params,
			    struct snd_soc_dai *dai)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_device *socdev = rtd->socdev;
	struct snd_soc_codec *codec = socdev->card->codec;
	u32 dai_cfg1;
	u32 reg, mask;

	/* set DAI source to Left and Right ADC */
	da7210_write(codec, DA7210_DAI_SRC_SEL,
		     DA7210_DAI_OUT_R_SRC | DA7210_DAI_OUT_L_SRC);

	/* Enable DAI */
	da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE | DA7210_DAI_EN);

	dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		dai_cfg1 |= DA7210_DAI_WORD_S16_LE;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		dai_cfg1 |= DA7210_DAI_WORD_S24_LE;
		break;
	default:
		return -EINVAL;
	}

	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);

	/* FIXME
	 *
	 * It support 48K only now
	 */
	switch (params_rate(params)) {
	case 48000:
		if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
			reg  = DA7210_DAC_HPF;
			mask = DA7210_DAC_VOICE_EN;
		} else {
			reg  = DA7210_ADC_HPF;
			mask = DA7210_ADC_VOICE_EN;
		}
		break;
	default:
		return -EINVAL;
	}

	snd_soc_update_bits(codec, reg, mask, 0);

	return 0;
}

/*
 * Set DAI mode and Format
 */
static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	u32 dai_cfg1;
	u32 dai_cfg3;

	dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
	dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		dai_cfg1 |= DA7210_DAI_MODE_MASTER;
		break;
	default:
		return -EINVAL;
	}

	/* FIXME
	 *
	 * It support I2S only now
	 */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		dai_cfg3 |= DA7210_DAI_FORMAT_I2SMODE;
		break;
	default:
		return -EINVAL;
	}

	/* FIXME
	 *
	 * It support 64bit data transmission only now
	 */
	dai_cfg1 |= DA7210_DAI_FLEN_64BIT;

	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);

	return 0;
}

#define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)

/* DAI operations */
static struct snd_soc_dai_ops da7210_dai_ops = {
	.startup	= da7210_startup,
	.hw_params	= da7210_hw_params,
	.set_fmt	= da7210_set_dai_fmt,
};

struct snd_soc_dai da7210_dai = {
	.name = "DA7210 IIS",
	.id = 0,
	/* playback capabilities */
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_96000,
		.formats = DA7210_FORMATS,
	},
	/* capture capabilities */
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_96000,
		.formats = DA7210_FORMATS,
	},
	.ops = &da7210_dai_ops,
};
EXPORT_SYMBOL_GPL(da7210_dai);

/*
 * Initialize the DA7210 driver
 * register the mixer and dsp interfaces with the kernel
 */
static int da7210_init(struct da7210_priv *da7210)
{
	struct snd_soc_codec *codec = &da7210->codec;
	int ret = 0;

	if (da7210_codec) {
		dev_err(codec->dev, "Another da7210 is registered\n");
		return -EINVAL;
	}

	mutex_init(&codec->mutex);
	INIT_LIST_HEAD(&codec->dapm_widgets);
	INIT_LIST_HEAD(&codec->dapm_paths);

	codec->private_data	= da7210;
	codec->name		= "DA7210";
	codec->owner		= THIS_MODULE;
	codec->read		= da7210_read;
	codec->write		= da7210_write;
	codec->dai		= &da7210_dai;
	codec->num_dai		= 1;
	codec->hw_write		= (hw_write_t)i2c_master_send;
	codec->reg_cache_size	= ARRAY_SIZE(da7210_reg);
	codec->reg_cache	= kmemdup(da7210_reg,
					  sizeof(da7210_reg), GFP_KERNEL);

	if (!codec->reg_cache)
		return -ENOMEM;

	da7210_dai.dev = codec->dev;
	da7210_codec = codec;

	ret = snd_soc_register_codec(codec);
	if (ret) {
		dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
		goto init_err;
	}

	ret = snd_soc_register_dai(&da7210_dai);
	if (ret) {
		dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
		goto init_err;
	}

	/* FIXME
	 *
	 * This driver use fixed value here
	 */

	/*
	 * ADC settings
	 */

	/* Enable Left & Right MIC PGA and Mic Bias */
	da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN | DA7210_MICBIAS_EN);
	da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);

	/* Enable Left and Right input PGA */
	da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
	da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);

	/* Enable Left and Right ADC */
	da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN | DA7210_ADC_R_EN);

	/*
	 * DAC settings
	 */

	/* Enable Left and Right DAC */
	da7210_write(codec, DA7210_DAC_SEL,
		     DA7210_DAC_L_SRC_DAI_L | DA7210_DAC_L_EN |
		     DA7210_DAC_R_SRC_DAI_R | DA7210_DAC_R_EN);

	/* Enable Left and Right out PGA */
	da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
	da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);

	/* Enable Left and Right HeadPhone PGA */
	da7210_write(codec, DA7210_HP_CFG,
		     DA7210_HP_2CAP_MODE | DA7210_HP_SENSE_EN |
		     DA7210_HP_L_EN | DA7210_HP_MODE | DA7210_HP_R_EN);

	/* Diable PLL and bypass it */
	da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);

	/* Bypass PLL and set MCLK freq rang to 10-20MHz */
	da7210_write(codec, DA7210_PLL_DIV3,
		     DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);

	/* Activate all enabled subsystem */
	da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);

	return ret;

init_err:
	kfree(codec->reg_cache);
	codec->reg_cache = NULL;

	return ret;

}

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
			   	      const struct i2c_device_id *id)
{
	struct da7210_priv *da7210;
	struct snd_soc_codec *codec;
	int ret;

	da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
	if (!da7210)
		return -ENOMEM;

	codec = &da7210->codec;
	codec->dev = &i2c->dev;

	i2c_set_clientdata(i2c, da7210);
	codec->control_data = i2c;

	ret = da7210_init(da7210);
	if (ret < 0)
		pr_err("Failed to initialise da7210 audio codec\n");

	return ret;
}

static int __devexit da7210_i2c_remove(struct i2c_client *client)
{
	struct da7210_priv *da7210 = i2c_get_clientdata(client);

	snd_soc_unregister_dai(&da7210_dai);
	kfree(da7210->codec.reg_cache);
	kfree(da7210);
	da7210_codec = NULL;

	return 0;
}

static const struct i2c_device_id da7210_i2c_id[] = {
	{ "da7210", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);

/* I2C codec control layer */
static struct i2c_driver da7210_i2c_driver = {
	.driver = {
		.name = "DA7210 I2C Codec",
		.owner = THIS_MODULE,
	},
	.probe = da7210_i2c_probe,
	.remove =  __devexit_p(da7210_i2c_remove),
	.id_table = da7210_i2c_id,
};
#endif

static int da7210_probe(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec;
	int ret;

	if (!da7210_codec) {
		dev_err(&pdev->dev, "Codec device not registered\n");
		return -ENODEV;
	}

	socdev->card->codec = da7210_codec;
	codec = da7210_codec;

	/* Register pcms */
	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	if (ret < 0)
		goto pcm_err;

	dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);

pcm_err:
	return ret;
}

static int da7210_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_da7210 = {
	.probe =	da7210_probe,
	.remove =	da7210_remove,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);

static int __init da7210_modinit(void)
{
	int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	ret = i2c_add_driver(&da7210_i2c_driver);
#endif
	return ret;
}
module_init(da7210_modinit);

static void __exit da7210_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	i2c_del_driver(&da7210_i2c_driver);
#endif
}
module_exit(da7210_exit);

MODULE_DESCRIPTION("ASoC DA7210 driver");
MODULE_AUTHOR("David Chen, Kuninori Morimoto");
MODULE_LICENSE("GPL");
Commit	Line	Data
98615454 KM	1	/*
	2	* DA7210 ALSA Soc codec driver
	3	*
	4	* Copyright (c) 2009 Dialog Semiconductor
	5	* Written by David Chen <Dajun.chen@diasemi.com>
	6	*
	7	* Copyright (C) 2009 Renesas Solutions Corp.
	8	* Cleanups by Kuninori Morimoto <morimoto.kuninori@renesas.com>
	9	*
	10	* Tested on SuperH Ecovec24 board with S16/S24 LE in 48KHz using I2S
	11	*
	12	* This program is free software; you can redistribute it and/or modify it
	13	* under the terms of the GNU General Public License as published by the
	14	* Free Software Foundation; either version 2 of the License, or (at your
	15	* option) any later version.
	16	*/
	17
	18	#include <linux/module.h>
	19	#include <linux/moduleparam.h>
	20	#include <linux/kernel.h>
	21	#include <linux/init.h>
	22	#include <linux/delay.h>
	23	#include <linux/pm.h>
	24	#include <linux/i2c.h>
	25	#include <linux/platform_device.h>
	26	#include <sound/core.h>
	27	#include <sound/pcm.h>
	28	#include <sound/pcm_params.h>
	29	#include <sound/soc.h>
	30	#include <sound/soc-dapm.h>
	31	#include <sound/tlv.h>
	32	#include <sound/initval.h>
	33	#include <asm/div64.h>
	34
	35	#include "da7210.h"
	36
	37	/* DA7210 register space */
	38	#define DA7210_STATUS 0x02
	39	#define DA7210_STARTUP1 0x03
	40	#define DA7210_MIC_L 0x07
	41	#define DA7210_MIC_R 0x08
	42	#define DA7210_INMIX_L 0x0D
	43	#define DA7210_INMIX_R 0x0E
	44	#define DA7210_ADC_HPF 0x0F
	45	#define DA7210_ADC 0x10
	46	#define DA7210_DAC_HPF 0x14
	47	#define DA7210_DAC_L 0x15
	48	#define DA7210_DAC_R 0x16
	49	#define DA7210_DAC_SEL 0x17
	50	#define DA7210_OUTMIX_L 0x1C
	51	#define DA7210_OUTMIX_R 0x1D
	52	#define DA7210_HP_L_VOL 0x21
	53	#define DA7210_HP_R_VOL 0x22
	54	#define DA7210_HP_CFG 0x23
	55	#define DA7210_DAI_SRC_SEL 0x25
	56	#define DA7210_DAI_CFG1 0x26
	57	#define DA7210_DAI_CFG3 0x28
	58	#define DA7210_PLL_DIV3 0x2B
	59	#define DA7210_PLL 0x2C
	60
	61	/* STARTUP1 bit fields */
	62	#define DA7210_SC_MST_EN (1 << 0)
	63
	64	/* MIC_L bit fields */
65	#define DA7210_MICBIAS_EN (1 << 6)
66	#define DA7210_MIC_L_EN (1 << 7)
67
68	/* MIC_R bit fields */
69	#define DA7210_MIC_R_EN (1 << 7)
70
71	/* INMIX_L bit fields */
72	#define DA7210_IN_L_EN (1 << 7)
73
74	/* INMIX_R bit fields */
75	#define DA7210_IN_R_EN (1 << 7)
76
77	/* ADC_HPF bit fields */
78	#define DA7210_ADC_VOICE_EN (1 << 7)
79
80	/* ADC bit fields */
81	#define DA7210_ADC_L_EN (1 << 3)
82	#define DA7210_ADC_R_EN (1 << 7)
83
c2151433 MB	84	/* DAC_HPF fields */
	85	#define DA7210_DAC_VOICE_EN (1 << 7)
	86
98615454 KM	87	/* DAC_SEL bit fields */
	88	#define DA7210_DAC_L_SRC_DAI_L (4 << 0)
	89	#define DA7210_DAC_L_EN (1 << 3)
	90	#define DA7210_DAC_R_SRC_DAI_R (5 << 4)
	91	#define DA7210_DAC_R_EN (1 << 7)
	92
	93	/* OUTMIX_L bit fields */
	94	#define DA7210_OUT_L_EN (1 << 7)
	95
	96	/* OUTMIX_R bit fields */
	97	#define DA7210_OUT_R_EN (1 << 7)
	98
	99	/* HP_CFG bit fields */
	100	#define DA7210_HP_2CAP_MODE (1 << 1)
	101	#define DA7210_HP_SENSE_EN (1 << 2)
	102	#define DA7210_HP_L_EN (1 << 3)
	103	#define DA7210_HP_MODE (1 << 6)
	104	#define DA7210_HP_R_EN (1 << 7)
	105
	106	/* DAI_SRC_SEL bit fields */
	107	#define DA7210_DAI_OUT_L_SRC (6 << 0)
	108	#define DA7210_DAI_OUT_R_SRC (7 << 4)
	109
	110	/* DAI_CFG1 bit fields */
	111	#define DA7210_DAI_WORD_S16_LE (0 << 0)
	112	#define DA7210_DAI_WORD_S24_LE (2 << 0)
	113	#define DA7210_DAI_FLEN_64BIT (1 << 2)
	114	#define DA7210_DAI_MODE_MASTER (1 << 7)
	115
	116	/* DAI_CFG3 bit fields */
	117	#define DA7210_DAI_FORMAT_I2SMODE (0 << 0)
	118	#define DA7210_DAI_OE (1 << 3)
	119	#define DA7210_DAI_EN (1 << 7)
	120
	121	/PLL_DIV3 bit fields /
	122	#define DA7210_MCLK_RANGE_10_20_MHZ (1 << 4)
	123	#define DA7210_PLL_BYP (1 << 6)
	124
	125	/* PLL bit fields */
	126	#define DA7210_PLL_FS_48000 (11 << 0)
	127
	128	#define DA7210_VERSION "0.0.1"
	129
	130	/* Codec private data */
	131	struct da7210_priv {
	132	struct snd_soc_codec codec;
	133	};
	134
	135	static struct snd_soc_codec *da7210_codec;
	136
	137	/*
	138	* Register cache
	139	*/
	140	static const u8 da7210_reg[] = {
	141	0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0 - R7 */
	142	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8 - RF */
	143	0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
	144	0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
	145	0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
	146	0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
	147	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
	148	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
	149	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
	150	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
151	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
152	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
153	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
154	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
155	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
156	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
157	0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
158	0x00, /* R88 */
159	};
160
161	/*
162	* Read da7210 register cache
163	*/
164	static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
165	{
166	u8 *cache = codec->reg_cache;
167	BUG_ON(reg > ARRAY_SIZE(da7210_reg));
168	return cache[reg];
169	}
170
171	/*
172	* Write to the da7210 register space
173	*/
174	static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
175	{
176	u8 *cache = codec->reg_cache;
177	u8 data[2];
178
179	BUG_ON(codec->volatile_register);
180
181	data[0] = reg & 0xff;
182	data[1] = value & 0xff;
183
184	if (reg >= codec->reg_cache_size)
185	return -EIO;
186
187	if (2 != codec->hw_write(codec->control_data, data, 2))
188	return -EIO;
189
190	cache[reg] = value;
191	return 0;
192	}
193
194	/*
195	* Read from the da7210 register space.
196	*/
197	static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
198	{
199	if (DA7210_STATUS == reg)
200	return i2c_smbus_read_byte_data(codec->control_data, reg);
201
202	return da7210_read_reg_cache(codec, reg);
203	}
204
205	static int da7210_startup(struct snd_pcm_substream *substream,
206	struct snd_soc_dai *dai)
207	{
208	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
209	struct snd_soc_codec *codec = dai->codec;
210
211	if (is_play) {
212	/* PlayBack Volume 40 */
213	snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
214	snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);
215
216	/* Enable Out */
217	snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
218	snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
219
220	} else {
221	/* Volume 7 */
222	snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
223	snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
224
225	/* Enable Mic */
226	snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
227	snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
228	}
229
230	return 0;
231	}
232
233	/*
234	* Set PCM DAI word length.
235	*/
236	static int da7210_hw_params(struct snd_pcm_substream *substream,
237	struct snd_pcm_hw_params *params,
238	struct snd_soc_dai *dai)
239	{
240	struct snd_soc_pcm_runtime *rtd = substream->private_data;
241	struct snd_soc_device *socdev = rtd->socdev;
242	struct snd_soc_codec *codec = socdev->card->codec;
243	u32 dai_cfg1;
244	u32 reg, mask;
245
246	/* set DAI source to Left and Right ADC */
247	da7210_write(codec, DA7210_DAI_SRC_SEL,
248	DA7210_DAI_OUT_R_SRC \| DA7210_DAI_OUT_L_SRC);
249
250	/* Enable DAI */
251	da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE \| DA7210_DAI_EN);
252
253	dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
254
255	switch (params_format(params)) {
256	case SNDRV_PCM_FORMAT_S16_LE:
257	dai_cfg1 \|= DA7210_DAI_WORD_S16_LE;
258	break;
259	case SNDRV_PCM_FORMAT_S24_LE:
260	dai_cfg1 \|= DA7210_DAI_WORD_S24_LE;
261	break;
262	default:
263	return -EINVAL;
264	}
265
266	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
267
268	/* FIXME
269	*
270	* It support 48K only now
271	*/
272	switch (params_rate(params)) {
273	case 48000:
274	if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
275	reg = DA7210_DAC_HPF;
276	mask = DA7210_DAC_VOICE_EN;
277	} else {
278	reg = DA7210_ADC_HPF;
279	mask = DA7210_ADC_VOICE_EN;
280	}
281	break;
282	default:
283	return -EINVAL;
284	}
285
286	snd_soc_update_bits(codec, reg, mask, 0);
287
288	return 0;
289	}
290
291	/*
292	* Set DAI mode and Format
293	*/
294	static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
295	{
296	struct snd_soc_codec *codec = codec_dai->codec;
297	u32 dai_cfg1;
298	u32 dai_cfg3;
299
300	dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
301	dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
302
303	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
304	case SND_SOC_DAIFMT_CBM_CFM:
305	dai_cfg1 \|= DA7210_DAI_MODE_MASTER;
306	break;
307	default:
308	return -EINVAL;
309	}
310
311	/* FIXME
312	*
313	* It support I2S only now
314	*/
315	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
316	case SND_SOC_DAIFMT_I2S:
317	dai_cfg3 \|= DA7210_DAI_FORMAT_I2SMODE;
318	break;
319	default:
320	return -EINVAL;
321	}
322
323	/* FIXME
324	*
325	* It support 64bit data transmission only now
326	*/
327	dai_cfg1 \|= DA7210_DAI_FLEN_64BIT;
328
329	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
330	da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
331
332	return 0;
333	}
334
335	#define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S24_LE)
336
337	/* DAI operations */
338	static struct snd_soc_dai_ops da7210_dai_ops = {
339	.startup = da7210_startup,
340	.hw_params = da7210_hw_params,
341	.set_fmt = da7210_set_dai_fmt,
342	};
343
344	struct snd_soc_dai da7210_dai = {
345	.name = "DA7210 IIS",
346	.id = 0,
347	/* playback capabilities */
348	.playback = {
349	.stream_name = "Playback",
350	.channels_min = 1,
351	.channels_max = 2,
352	.rates = SNDRV_PCM_RATE_8000_96000,
353	.formats = DA7210_FORMATS,
354	},
355	/* capture capabilities */
356	.capture = {
357	.stream_name = "Capture",
358	.channels_min = 1,
359	.channels_max = 2,
360	.rates = SNDRV_PCM_RATE_8000_96000,
361	.formats = DA7210_FORMATS,
362	},
363	.ops = &da7210_dai_ops,
364	};
365	EXPORT_SYMBOL_GPL(da7210_dai);
366
367	/*
368	* Initialize the DA7210 driver
369	* register the mixer and dsp interfaces with the kernel
370	*/
371	static int da7210_init(struct da7210_priv *da7210)
372	{
373	struct snd_soc_codec *codec = &da7210->codec;
374	int ret = 0;
375
376	if (da7210_codec) {
377	dev_err(codec->dev, "Another da7210 is registered\n");
378	return -EINVAL;
379	}
380
381	mutex_init(&codec->mutex);
382	INIT_LIST_HEAD(&codec->dapm_widgets);
383	INIT_LIST_HEAD(&codec->dapm_paths);
384
385	codec->private_data = da7210;
386	codec->name = "DA7210";
387	codec->owner = THIS_MODULE;
388	codec->read = da7210_read;
389	codec->write = da7210_write;
390	codec->dai = &da7210_dai;
391	codec->num_dai = 1;
392	codec->hw_write = (hw_write_t)i2c_master_send;
393	codec->reg_cache_size = ARRAY_SIZE(da7210_reg);
394	codec->reg_cache = kmemdup(da7210_reg,
395	sizeof(da7210_reg), GFP_KERNEL);
396
397	if (!codec->reg_cache)
398	return -ENOMEM;
399
400	da7210_dai.dev = codec->dev;
401	da7210_codec = codec;
402
403	ret = snd_soc_register_codec(codec);
404	if (ret) {
405	dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
406	goto init_err;
407	}
408
409	ret = snd_soc_register_dai(&da7210_dai);
410	if (ret) {
411	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
412	goto init_err;
413	}
414
415	/* FIXME
416	*
417	* This driver use fixed value here
418	*/
419
420	/*
421	* ADC settings
422	*/
423
424	/* Enable Left & Right MIC PGA and Mic Bias */
425	da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN \| DA7210_MICBIAS_EN);
426	da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
427
428	/* Enable Left and Right input PGA */
429	da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
430	da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
431
432	/* Enable Left and Right ADC */
433	da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN \| DA7210_ADC_R_EN);
434
435	/*
436	* DAC settings
437	*/
438
439	/* Enable Left and Right DAC */
440	da7210_write(codec, DA7210_DAC_SEL,
441	DA7210_DAC_L_SRC_DAI_L \| DA7210_DAC_L_EN \|
442	DA7210_DAC_R_SRC_DAI_R \| DA7210_DAC_R_EN);
443
444	/* Enable Left and Right out PGA */
445	da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
446	da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
447
448	/* Enable Left and Right HeadPhone PGA */
449	da7210_write(codec, DA7210_HP_CFG,
450	DA7210_HP_2CAP_MODE \| DA7210_HP_SENSE_EN \|
451	DA7210_HP_L_EN \| DA7210_HP_MODE \| DA7210_HP_R_EN);
452
453	/* Diable PLL and bypass it */
454	da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
455
456	/* Bypass PLL and set MCLK freq rang to 10-20MHz */
457	da7210_write(codec, DA7210_PLL_DIV3,
458	DA7210_MCLK_RANGE_10_20_MHZ \| DA7210_PLL_BYP);
459
460	/* Activate all enabled subsystem */
461	da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
462
463	return ret;
464
465	init_err:
466	kfree(codec->reg_cache);
467	codec->reg_cache = NULL;
468
469	return ret;
470
471	}
472
473	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
735fe4cf MB	474	static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
735fe4cf MB	475	const struct i2c_device_id *id)
98615454 KM	476	{
	477	struct da7210_priv *da7210;
	478	struct snd_soc_codec *codec;
	479	int ret;
	480
	481	da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
	482	if (!da7210)
	483	return -ENOMEM;
	484
	485	codec = &da7210->codec;
	486	codec->dev = &i2c->dev;
	487
	488	i2c_set_clientdata(i2c, da7210);
	489	codec->control_data = i2c;
	490
	491	ret = da7210_init(da7210);
	492	if (ret < 0)
	493	pr_err("Failed to initialise da7210 audio codec\n");
	494
	495	return ret;
	496	}
	497
735fe4cf	498	static int __devexit da7210_i2c_remove(struct i2c_client *client)
98615454 KM	499	{
	500	struct da7210_priv *da7210 = i2c_get_clientdata(client);
	501
	502	snd_soc_unregister_dai(&da7210_dai);
	503	kfree(da7210->codec.reg_cache);
	504	kfree(da7210);
	505	da7210_codec = NULL;
	506
	507	return 0;
	508	}
	509
	510	static const struct i2c_device_id da7210_i2c_id[] = {
	511	{ "da7210", 0 },
	512	{ }
	513	};
	514	MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
	515
	516	/* I2C codec control layer */
	517	static struct i2c_driver da7210_i2c_driver = {
	518	.driver = {
	519	.name = "DA7210 I2C Codec",
	520	.owner = THIS_MODULE,
	521	},
	522	.probe = da7210_i2c_probe,
	523	.remove = __devexit_p(da7210_i2c_remove),
	524	.id_table = da7210_i2c_id,
	525	};
	526	#endif
	527
	528	static int da7210_probe(struct platform_device *pdev)
	529	{
	530	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	531	struct snd_soc_codec *codec;
	532	int ret;
	533
	534	if (!da7210_codec) {
	535	dev_err(&pdev->dev, "Codec device not registered\n");
	536	return -ENODEV;
	537	}
	538
	539	socdev->card->codec = da7210_codec;
	540	codec = da7210_codec;
	541
	542	/* Register pcms */
	543	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	544	if (ret < 0)
	545	goto pcm_err;
	546
	547	dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
	548
	549	pcm_err:
	550	return ret;
	551	}
	552
	553	static int da7210_remove(struct platform_device *pdev)
	554	{
	555	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	556
	557	snd_soc_free_pcms(socdev);
	558	snd_soc_dapm_free(socdev);
	559
	560	return 0;
	561	}
	562
563	struct snd_soc_codec_device soc_codec_dev_da7210 = {
564	.probe = da7210_probe,
565	.remove = da7210_remove,
566	};
567	EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);
568
569	static int __init da7210_modinit(void)
570	{
571	int ret = 0;
572	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
573	ret = i2c_add_driver(&da7210_i2c_driver);
574	#endif
575	return ret;
576	}
577	module_init(da7210_modinit);
578
579	static void __exit da7210_exit(void)
580	{
581	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
582	i2c_del_driver(&da7210_i2c_driver);
583	#endif
584	}
585	module_exit(da7210_exit);
586
587	MODULE_DESCRIPTION("ASoC DA7210 driver");
588	MODULE_AUTHOR("David Chen, Kuninori Morimoto");
589	MODULE_LICENSE("GPL");