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

/* DAC/ADC HPF fields */
#define DA7210_VOICE_F0_MASK		(0x7 << 4)
#define DA7210_VOICE_F0_25		(1 << 4)
#define DA7210_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_MASK		(0xF << 0)
#define DA7210_PLL_FS_8000		(0x1 << 0)
#define DA7210_PLL_FS_12000		(0x3 << 0)
#define DA7210_PLL_FS_16000		(0x5 << 0)
#define DA7210_PLL_FS_24000		(0x7 << 0)
#define DA7210_PLL_FS_32000		(0x9 << 0)
#define DA7210_PLL_FS_48000		(0xB << 0)
#define DA7210_PLL_FS_96000		(0xF << 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 hpf_reg, hpf_mask, hpf_value;
	u32 fs;

	/* 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);

	hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
		DA7210_DAC_HPF : DA7210_ADC_HPF;

	switch (params_rate(params)) {
	case 8000:
		fs		= DA7210_PLL_FS_8000;
		hpf_mask	= DA7210_VOICE_F0_MASK	| DA7210_VOICE_EN;
		hpf_value	= DA7210_VOICE_F0_25	| DA7210_VOICE_EN;
		break;
	case 12000:
		fs		= DA7210_PLL_FS_12000;
		hpf_mask	= DA7210_VOICE_F0_MASK	| DA7210_VOICE_EN;
		hpf_value	= DA7210_VOICE_F0_25	| DA7210_VOICE_EN;
		break;
	case 16000:
		fs		= DA7210_PLL_FS_16000;
		hpf_mask	= DA7210_VOICE_F0_MASK	| DA7210_VOICE_EN;
		hpf_value	= DA7210_VOICE_F0_25	| DA7210_VOICE_EN;
		break;
	case 32000:
		fs		= DA7210_PLL_FS_32000;
		hpf_mask	= DA7210_VOICE_EN;
		hpf_value	= 0;
		break;
	case 48000:
		fs		= DA7210_PLL_FS_48000;
		hpf_mask	= DA7210_VOICE_EN;
		hpf_value	= 0;
		break;
	case 96000:
		fs		= DA7210_PLL_FS_96000;
		hpf_mask	= DA7210_VOICE_EN;
		hpf_value	= 0;
		break;
	default:
		return -EINVAL;
	}

	snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);

	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
98615454 KM	77	/* ADC bit fields */
	78	#define DA7210_ADC_L_EN (1 << 3)
	79	#define DA7210_ADC_R_EN (1 << 7)
	80
3a9d6202 KM	81	/* DAC/ADC HPF fields */
	82	#define DA7210_VOICE_F0_MASK (0x7 << 4)
	83	#define DA7210_VOICE_F0_25 (1 << 4)
	84	#define DA7210_VOICE_EN (1 << 7)
c2151433	85
98615454 KM	86	/* DAC_SEL bit fields */
	87	#define DA7210_DAC_L_SRC_DAI_L (4 << 0)
	88	#define DA7210_DAC_L_EN (1 << 3)
	89	#define DA7210_DAC_R_SRC_DAI_R (5 << 4)
	90	#define DA7210_DAC_R_EN (1 << 7)
	91
	92	/* OUTMIX_L bit fields */
	93	#define DA7210_OUT_L_EN (1 << 7)
	94
	95	/* OUTMIX_R bit fields */
	96	#define DA7210_OUT_R_EN (1 << 7)
	97
	98	/* HP_CFG bit fields */
	99	#define DA7210_HP_2CAP_MODE (1 << 1)
	100	#define DA7210_HP_SENSE_EN (1 << 2)
	101	#define DA7210_HP_L_EN (1 << 3)
	102	#define DA7210_HP_MODE (1 << 6)
	103	#define DA7210_HP_R_EN (1 << 7)
	104
	105	/* DAI_SRC_SEL bit fields */
	106	#define DA7210_DAI_OUT_L_SRC (6 << 0)
	107	#define DA7210_DAI_OUT_R_SRC (7 << 4)
	108
	109	/* DAI_CFG1 bit fields */
	110	#define DA7210_DAI_WORD_S16_LE (0 << 0)
	111	#define DA7210_DAI_WORD_S24_LE (2 << 0)
	112	#define DA7210_DAI_FLEN_64BIT (1 << 2)
	113	#define DA7210_DAI_MODE_MASTER (1 << 7)
	114
	115	/* DAI_CFG3 bit fields */
	116	#define DA7210_DAI_FORMAT_I2SMODE (0 << 0)
	117	#define DA7210_DAI_OE (1 << 3)
	118	#define DA7210_DAI_EN (1 << 7)
	119
	120	/PLL_DIV3 bit fields /
	121	#define DA7210_MCLK_RANGE_10_20_MHZ (1 << 4)
	122	#define DA7210_PLL_BYP (1 << 6)
	123
	124	/* PLL bit fields */
3a9d6202 KM	125	#define DA7210_PLL_FS_MASK (0xF << 0)
	126	#define DA7210_PLL_FS_8000 (0x1 << 0)
	127	#define DA7210_PLL_FS_12000 (0x3 << 0)
	128	#define DA7210_PLL_FS_16000 (0x5 << 0)
	129	#define DA7210_PLL_FS_24000 (0x7 << 0)
	130	#define DA7210_PLL_FS_32000 (0x9 << 0)
	131	#define DA7210_PLL_FS_48000 (0xB << 0)
	132	#define DA7210_PLL_FS_96000 (0xF << 0)
	133
98615454 KM	134
	135	#define DA7210_VERSION "0.0.1"
	136
	137	/* Codec private data */
	138	struct da7210_priv {
	139	struct snd_soc_codec codec;
	140	};
	141
	142	static struct snd_soc_codec *da7210_codec;
	143
	144	/*
	145	* Register cache
	146	*/
	147	static const u8 da7210_reg[] = {
	148	0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0 - R7 */
	149	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8 - RF */
	150	0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
	151	0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
	152	0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
	153	0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
	154	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
	155	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
	156	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
	157	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
	158	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
	159	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
	160	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
	161	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
	162	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
	163	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
	164	0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
	165	0x00, /* R88 */
	166	};
	167
	168	/*
	169	* Read da7210 register cache
	170	*/
	171	static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
	172	{
	173	u8 *cache = codec->reg_cache;
	174	BUG_ON(reg > ARRAY_SIZE(da7210_reg));
	175	return cache[reg];
	176	}
	177
	178	/*
	179	* Write to the da7210 register space
	180	*/
	181	static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
	182	{
	183	u8 *cache = codec->reg_cache;
	184	u8 data[2];
	185
	186	BUG_ON(codec->volatile_register);
	187
	188	data[0] = reg & 0xff;
	189	data[1] = value & 0xff;
	190
	191	if (reg >= codec->reg_cache_size)
	192	return -EIO;
	193
	194	if (2 != codec->hw_write(codec->control_data, data, 2))
	195	return -EIO;
	196
	197	cache[reg] = value;
198	return 0;
199	}
200
201	/*
202	* Read from the da7210 register space.
203	*/
204	static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
205	{
206	if (DA7210_STATUS == reg)
207	return i2c_smbus_read_byte_data(codec->control_data, reg);
208
209	return da7210_read_reg_cache(codec, reg);
210	}
211
212	static int da7210_startup(struct snd_pcm_substream *substream,
213	struct snd_soc_dai *dai)
214	{
215	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
216	struct snd_soc_codec *codec = dai->codec;
217
218	if (is_play) {
219	/* PlayBack Volume 40 */
220	snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
221	snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);
222
223	/* Enable Out */
224	snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
225	snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
226
227	} else {
228	/* Volume 7 */
229	snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
230	snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
231
232	/* Enable Mic */
233	snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
234	snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
235	}
236
237	return 0;
238	}
239
240	/*
241	* Set PCM DAI word length.
242	*/
243	static int da7210_hw_params(struct snd_pcm_substream *substream,
244	struct snd_pcm_hw_params *params,
245	struct snd_soc_dai *dai)
246	{
247	struct snd_soc_pcm_runtime *rtd = substream->private_data;
248	struct snd_soc_device *socdev = rtd->socdev;
249	struct snd_soc_codec *codec = socdev->card->codec;
250	u32 dai_cfg1;
3a9d6202 KM	251	u32 hpf_reg, hpf_mask, hpf_value;
3a9d6202 KM	252	u32 fs;
98615454 KM	253
	254	/* set DAI source to Left and Right ADC */
	255	da7210_write(codec, DA7210_DAI_SRC_SEL,
	256	DA7210_DAI_OUT_R_SRC \| DA7210_DAI_OUT_L_SRC);
	257
	258	/* Enable DAI */
	259	da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE \| DA7210_DAI_EN);
	260
	261	dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
	262
	263	switch (params_format(params)) {
	264	case SNDRV_PCM_FORMAT_S16_LE:
	265	dai_cfg1 \|= DA7210_DAI_WORD_S16_LE;
	266	break;
	267	case SNDRV_PCM_FORMAT_S24_LE:
	268	dai_cfg1 \|= DA7210_DAI_WORD_S24_LE;
	269	break;
	270	default:
	271	return -EINVAL;
	272	}
	273
	274	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	275
3a9d6202 KM	276	hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
	277	DA7210_DAC_HPF : DA7210_ADC_HPF;
	278
98615454	279	switch (params_rate(params)) {
3a9d6202 KM	280	case 8000:
	281	fs = DA7210_PLL_FS_8000;
	282	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	283	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
	284	break;
	285	case 12000:
	286	fs = DA7210_PLL_FS_12000;
	287	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	288	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
	289	break;
	290	case 16000:
	291	fs = DA7210_PLL_FS_16000;
	292	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	293	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
	294	break;
	295	case 32000:
	296	fs = DA7210_PLL_FS_32000;
	297	hpf_mask = DA7210_VOICE_EN;
	298	hpf_value = 0;
	299	break;
98615454	300	case 48000:
3a9d6202 KM	301	fs = DA7210_PLL_FS_48000;
	302	hpf_mask = DA7210_VOICE_EN;
	303	hpf_value = 0;
	304	break;
	305	case 96000:
	306	fs = DA7210_PLL_FS_96000;
	307	hpf_mask = DA7210_VOICE_EN;
	308	hpf_value = 0;
98615454 KM	309	break;
	310	default:
	311	return -EINVAL;
	312	}
	313
3a9d6202 KM	314	snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
3a9d6202 KM	315	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
98615454 KM	316
	317	return 0;
	318	}
	319
	320	/*
	321	* Set DAI mode and Format
	322	*/
	323	static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
	324	{
	325	struct snd_soc_codec *codec = codec_dai->codec;
	326	u32 dai_cfg1;
	327	u32 dai_cfg3;
	328
	329	dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
	330	dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
	331
	332	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	333	case SND_SOC_DAIFMT_CBM_CFM:
	334	dai_cfg1 \|= DA7210_DAI_MODE_MASTER;
	335	break;
	336	default:
	337	return -EINVAL;
	338	}
	339
	340	/* FIXME
	341	*
	342	* It support I2S only now
	343	*/
	344	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	345	case SND_SOC_DAIFMT_I2S:
	346	dai_cfg3 \|= DA7210_DAI_FORMAT_I2SMODE;
	347	break;
	348	default:
	349	return -EINVAL;
	350	}
	351
	352	/* FIXME
	353	*
	354	* It support 64bit data transmission only now
	355	*/
	356	dai_cfg1 \|= DA7210_DAI_FLEN_64BIT;
	357
	358	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	359	da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
	360
	361	return 0;
	362	}
	363
	364	#define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S24_LE)
	365
	366	/* DAI operations */
	367	static struct snd_soc_dai_ops da7210_dai_ops = {
	368	.startup = da7210_startup,
	369	.hw_params = da7210_hw_params,
	370	.set_fmt = da7210_set_dai_fmt,
	371	};
	372
	373	struct snd_soc_dai da7210_dai = {
	374	.name = "DA7210 IIS",
	375	.id = 0,
	376	/* playback capabilities */
	377	.playback = {
	378	.stream_name = "Playback",
	379	.channels_min = 1,
380	.channels_max = 2,
381	.rates = SNDRV_PCM_RATE_8000_96000,
382	.formats = DA7210_FORMATS,
383	},
384	/* capture capabilities */
385	.capture = {
386	.stream_name = "Capture",
387	.channels_min = 1,
388	.channels_max = 2,
389	.rates = SNDRV_PCM_RATE_8000_96000,
390	.formats = DA7210_FORMATS,
391	},
392	.ops = &da7210_dai_ops,
393	};
394	EXPORT_SYMBOL_GPL(da7210_dai);
395
396	/*
397	* Initialize the DA7210 driver
398	* register the mixer and dsp interfaces with the kernel
399	*/
400	static int da7210_init(struct da7210_priv *da7210)
401	{
402	struct snd_soc_codec *codec = &da7210->codec;
403	int ret = 0;
404
405	if (da7210_codec) {
406	dev_err(codec->dev, "Another da7210 is registered\n");
407	return -EINVAL;
408	}
409
410	mutex_init(&codec->mutex);
411	INIT_LIST_HEAD(&codec->dapm_widgets);
412	INIT_LIST_HEAD(&codec->dapm_paths);
413
414	codec->private_data = da7210;
415	codec->name = "DA7210";
416	codec->owner = THIS_MODULE;
417	codec->read = da7210_read;
418	codec->write = da7210_write;
419	codec->dai = &da7210_dai;
420	codec->num_dai = 1;
421	codec->hw_write = (hw_write_t)i2c_master_send;
422	codec->reg_cache_size = ARRAY_SIZE(da7210_reg);
423	codec->reg_cache = kmemdup(da7210_reg,
424	sizeof(da7210_reg), GFP_KERNEL);
425
426	if (!codec->reg_cache)
427	return -ENOMEM;
428
429	da7210_dai.dev = codec->dev;
430	da7210_codec = codec;
431
432	ret = snd_soc_register_codec(codec);
433	if (ret) {
434	dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
435	goto init_err;
436	}
437
438	ret = snd_soc_register_dai(&da7210_dai);
439	if (ret) {
440	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
441	goto init_err;
442	}
443
444	/* FIXME
445	*
446	* This driver use fixed value here
447	*/
448
449	/*
450	* ADC settings
451	*/
452
453	/* Enable Left & Right MIC PGA and Mic Bias */
454	da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN \| DA7210_MICBIAS_EN);
455	da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
456
457	/* Enable Left and Right input PGA */
458	da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
459	da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
460
461	/* Enable Left and Right ADC */
462	da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN \| DA7210_ADC_R_EN);
463
464	/*
465	* DAC settings
466	*/
467
468	/* Enable Left and Right DAC */
469	da7210_write(codec, DA7210_DAC_SEL,
470	DA7210_DAC_L_SRC_DAI_L \| DA7210_DAC_L_EN \|
471	DA7210_DAC_R_SRC_DAI_R \| DA7210_DAC_R_EN);
472
473	/* Enable Left and Right out PGA */
474	da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
475	da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
476
477	/* Enable Left and Right HeadPhone PGA */
478	da7210_write(codec, DA7210_HP_CFG,
479	DA7210_HP_2CAP_MODE \| DA7210_HP_SENSE_EN \|
480	DA7210_HP_L_EN \| DA7210_HP_MODE \| DA7210_HP_R_EN);
481
482	/* Diable PLL and bypass it */
483	da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
484
485	/* Bypass PLL and set MCLK freq rang to 10-20MHz */
486	da7210_write(codec, DA7210_PLL_DIV3,
487	DA7210_MCLK_RANGE_10_20_MHZ \| DA7210_PLL_BYP);
488
489	/* Activate all enabled subsystem */
490	da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
491
492	return ret;
493
494	init_err:
495	kfree(codec->reg_cache);
496	codec->reg_cache = NULL;
497
498	return ret;
499
500	}
501
502	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
735fe4cf MB	503	static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
735fe4cf MB	504	const struct i2c_device_id *id)
98615454 KM	505	{
	506	struct da7210_priv *da7210;
	507	struct snd_soc_codec *codec;
	508	int ret;
	509
	510	da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
	511	if (!da7210)
	512	return -ENOMEM;
	513
	514	codec = &da7210->codec;
	515	codec->dev = &i2c->dev;
	516
	517	i2c_set_clientdata(i2c, da7210);
	518	codec->control_data = i2c;
	519
	520	ret = da7210_init(da7210);
	521	if (ret < 0)
	522	pr_err("Failed to initialise da7210 audio codec\n");
	523
	524	return ret;
	525	}
	526
735fe4cf	527	static int __devexit da7210_i2c_remove(struct i2c_client *client)
98615454 KM	528	{
	529	struct da7210_priv *da7210 = i2c_get_clientdata(client);
	530
	531	snd_soc_unregister_dai(&da7210_dai);
	532	kfree(da7210->codec.reg_cache);
	533	kfree(da7210);
	534	da7210_codec = NULL;
	535
	536	return 0;
	537	}
	538
	539	static const struct i2c_device_id da7210_i2c_id[] = {
	540	{ "da7210", 0 },
	541	{ }
	542	};
	543	MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
	544
	545	/* I2C codec control layer */
	546	static struct i2c_driver da7210_i2c_driver = {
	547	.driver = {
	548	.name = "DA7210 I2C Codec",
	549	.owner = THIS_MODULE,
	550	},
	551	.probe = da7210_i2c_probe,
	552	.remove = __devexit_p(da7210_i2c_remove),
	553	.id_table = da7210_i2c_id,
	554	};
	555	#endif
	556
	557	static int da7210_probe(struct platform_device *pdev)
	558	{
	559	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	560	struct snd_soc_codec *codec;
	561	int ret;
	562
	563	if (!da7210_codec) {
	564	dev_err(&pdev->dev, "Codec device not registered\n");
	565	return -ENODEV;
	566	}
	567
	568	socdev->card->codec = da7210_codec;
	569	codec = da7210_codec;
	570
	571	/* Register pcms */
	572	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	573	if (ret < 0)
	574	goto pcm_err;
	575
	576	dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
	577
	578	pcm_err:
	579	return ret;
	580	}
	581
	582	static int da7210_remove(struct platform_device *pdev)
	583	{
	584	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	585
	586	snd_soc_free_pcms(socdev);
	587	snd_soc_dapm_free(socdev);
	588
	589	return 0;
	590	}
	591
592	struct snd_soc_codec_device soc_codec_dev_da7210 = {
593	.probe = da7210_probe,
594	.remove = da7210_remove,
595	};
596	EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);
597
598	static int __init da7210_modinit(void)
599	{
600	int ret = 0;
601	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
602	ret = i2c_add_driver(&da7210_i2c_driver);
603	#endif
604	return ret;
605	}
606	module_init(da7210_modinit);
607
608	static void __exit da7210_exit(void)
609	{
610	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
611	i2c_del_driver(&da7210_i2c_driver);
612	#endif
613	}
614	module_exit(da7210_exit);
615
616	MODULE_DESCRIPTION("ASoC DA7210 driver");
617	MODULE_AUTHOR("David Chen, Kuninori Morimoto");
618	MODULE_LICENSE("GPL");