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