[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/delay.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.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_DIV1			0x29
#define DA7210_PLL_DIV2			0x2A
#define DA7210_PLL_DIV3			0x2B
#define DA7210_PLL			0x2C
#define DA7210_A_HID_UNLOCK		0x8A
#define DA7210_A_TEST_UNLOCK		0x8B
#define DA7210_A_PLL1			0x90
#define DA7210_A_CP_MODE		0xA7

/* 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_11025		(0x2 << 0)
#define DA7210_PLL_FS_12000		(0x3 << 0)
#define DA7210_PLL_FS_16000		(0x5 << 0)
#define DA7210_PLL_FS_22050		(0x6 << 0)
#define DA7210_PLL_FS_24000		(0x7 << 0)
#define DA7210_PLL_FS_32000		(0x9 << 0)
#define DA7210_PLL_FS_44100		(0xA << 0)
#define DA7210_PLL_FS_48000		(0xB << 0)
#define DA7210_PLL_FS_88200		(0xE << 0)
#define DA7210_PLL_FS_96000		(0xF << 0)
#define DA7210_PLL_EN			(0x1 << 7)

#define DA7210_VERSION "0.0.1"

/*
 * Playback Volume
 *
 * max		: 0x3F (+15.0 dB)
 *		   (1.5 dB step)
 * min		: 0x11 (-54.0 dB)
 * mute		: 0x10
 * reserved	: 0x00 - 0x0F
 *
 * ** FIXME **
 *
 * Reserved area are considered as "mute".
 * -> min = -79.5 dB
 */
static const DECLARE_TLV_DB_SCALE(hp_out_tlv, -7950, 150, 1);

static const struct snd_kcontrol_new da7210_snd_controls[] = {

	SOC_DOUBLE_R_TLV("HeadPhone Playback Volume",
			 DA7210_HP_L_VOL, DA7210_HP_R_VOL,
			 0, 0x3F, 0, hp_out_tlv),
};

/* Codec private data */
struct da7210_priv {
	enum snd_soc_control_type control_type;
	void *control_data;
};

/*
 * 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->driver->volatile_register);

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

	if (reg >= codec->driver->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) {
		/* 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_codec *codec = rtd->codec;
	u32 dai_cfg1;
	u32 hpf_reg, hpf_mask, hpf_value;
	u32 fs, bypass;

	/* 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;
		bypass		= DA7210_PLL_BYP;
		break;
	case 11025:
		fs		= DA7210_PLL_FS_11025;
		hpf_mask	= DA7210_VOICE_F0_MASK	| DA7210_VOICE_EN;
		hpf_value	= DA7210_VOICE_F0_25	| DA7210_VOICE_EN;
		bypass		= 0;
		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;
		bypass		= DA7210_PLL_BYP;
		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;
		bypass		= DA7210_PLL_BYP;
		break;
	case 22050:
		fs		= DA7210_PLL_FS_22050;
		hpf_mask	= DA7210_VOICE_EN;
		hpf_value	= 0;
		bypass		= 0;
		break;
	case 32000:
		fs		= DA7210_PLL_FS_32000;
		hpf_mask	= DA7210_VOICE_EN;
		hpf_value	= 0;
		bypass		= DA7210_PLL_BYP;
		break;
	case 44100:
		fs		= DA7210_PLL_FS_44100;
		hpf_mask	= DA7210_VOICE_EN;
		hpf_value	= 0;
		bypass		= 0;
		break;
	case 48000:
		fs		= DA7210_PLL_FS_48000;
		hpf_mask	= DA7210_VOICE_EN;
		hpf_value	= 0;
		bypass		= DA7210_PLL_BYP;
		break;
	case 88200:
		fs		= DA7210_PLL_FS_88200;
		hpf_mask	= DA7210_VOICE_EN;
		hpf_value	= 0;
		bypass		= 0;
		break;
	case 96000:
		fs		= DA7210_PLL_FS_96000;
		hpf_mask	= DA7210_VOICE_EN;
		hpf_value	= 0;
		bypass		= DA7210_PLL_BYP;
		break;
	default:
		return -EINVAL;
	}

	/* Disable active mode */
	snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);

	snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
	snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);

	/* Enable active mode */
	snd_soc_update_bits(codec, DA7210_STARTUP1,
			    DA7210_SC_MST_EN, DA7210_SC_MST_EN);

	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,
};

static struct snd_soc_dai_driver da7210_dai = {
	.name = "da7210-hifi",
	/* 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,
	.symmetric_rates = 1,
};

static int da7210_probe(struct snd_soc_codec *codec)
{
	struct da7210_priv *da7210 = snd_soc_codec_get_drvdata(codec);

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

	codec->control_data	= da7210->control_data;
	codec->hw_write		= (hw_write_t)i2c_master_send;

	/* FIXME
	 *
	 * This driver use fixed value here
	 * And below settings expects MCLK = 12.288MHz
	 *
	 * When you select different MCLK, please check...
	 *      DA7210_PLL_DIV1 val
	 *      DA7210_PLL_DIV2 val
	 *      DA7210_PLL_DIV3 val
	 *      DA7210_PLL_DIV3 :: DA7210_MCLK_RANGExxx
	 */

	/*
	 * make sure that DA7210 use bypass mode before start up
	 */
	da7210_write(codec, DA7210_STARTUP1, 0);
	da7210_write(codec, DA7210_PLL_DIV3,
		     DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);

	/*
	 * 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);

	/*
	 * If 48kHz sound came, it use bypass mode,
	 * and when it is 44.1kHz, it use PLL.
	 *
	 * This time, this driver sets PLL always ON
	 * and controls bypass/PLL mode by switching
	 * DA7210_PLL_DIV3 :: DA7210_PLL_BYP bit.
	 *   see da7210_hw_params
	 */
	da7210_write(codec, DA7210_PLL_DIV1, 0xE5); /* MCLK = 12.288MHz */
	da7210_write(codec, DA7210_PLL_DIV2, 0x99);
	da7210_write(codec, DA7210_PLL_DIV3, 0x0A |
		     DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_EN, DA7210_PLL_EN);

	/* As suggested by Dialog */
	da7210_write(codec, DA7210_A_HID_UNLOCK,	0x8B); /* unlock */
	da7210_write(codec, DA7210_A_TEST_UNLOCK,	0xB4);
	da7210_write(codec, DA7210_A_PLL1,		0x01);
	da7210_write(codec, DA7210_A_CP_MODE,		0x7C);
	da7210_write(codec, DA7210_A_HID_UNLOCK,	0x00); /* re-lock */
	da7210_write(codec, DA7210_A_TEST_UNLOCK,	0x00);

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

	snd_soc_add_controls(codec, da7210_snd_controls,
			     ARRAY_SIZE(da7210_snd_controls));

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

	return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_da7210 = {
	.probe			= da7210_probe,
	.read			= da7210_read,
	.write			= da7210_write,
	.reg_cache_size		= ARRAY_SIZE(da7210_reg),
	.reg_word_size		= sizeof(u8),
	.reg_cache_default	= da7210_reg,
};

#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;
	int ret;

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

	i2c_set_clientdata(i2c, da7210);
	da7210->control_data = i2c;
	da7210->control_type = SND_SOC_I2C;

	ret =  snd_soc_register_codec(&i2c->dev,
			&soc_codec_dev_da7210, &da7210_dai, 1);
	if (ret < 0)
		kfree(da7210);

	return ret;
}

static int __devexit da7210_i2c_remove(struct i2c_client *client)
{
	snd_soc_unregister_codec(&client->dev);
	kfree(i2c_get_clientdata(client));
	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-codec",
		.owner = THIS_MODULE,
	},
	.probe		= da7210_i2c_probe,
	.remove		= __devexit_p(da7210_i2c_remove),
	.id_table	= da7210_i2c_id,
};
#endif

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
98615454	18	#include <linux/delay.h>
98615454 KM	19	#include <linux/i2c.h>
98615454 KM	20	#include <linux/platform_device.h>
5a0e3ad6	21	#include <linux/slab.h>
98615454 KM	22	#include <sound/pcm.h>
98615454 KM	23	#include <sound/pcm_params.h>
ce6120cc	24	#include <sound/soc.h>
98615454	25	#include <sound/initval.h>
a7e7cd5b	26	#include <sound/tlv.h>
98615454	27
98615454 KM	28	/* DA7210 register space */
	29	#define DA7210_STATUS 0x02
	30	#define DA7210_STARTUP1 0x03
	31	#define DA7210_MIC_L 0x07
	32	#define DA7210_MIC_R 0x08
	33	#define DA7210_INMIX_L 0x0D
	34	#define DA7210_INMIX_R 0x0E
	35	#define DA7210_ADC_HPF 0x0F
	36	#define DA7210_ADC 0x10
	37	#define DA7210_DAC_HPF 0x14
	38	#define DA7210_DAC_L 0x15
	39	#define DA7210_DAC_R 0x16
	40	#define DA7210_DAC_SEL 0x17
	41	#define DA7210_OUTMIX_L 0x1C
	42	#define DA7210_OUTMIX_R 0x1D
	43	#define DA7210_HP_L_VOL 0x21
	44	#define DA7210_HP_R_VOL 0x22
	45	#define DA7210_HP_CFG 0x23
	46	#define DA7210_DAI_SRC_SEL 0x25
	47	#define DA7210_DAI_CFG1 0x26
	48	#define DA7210_DAI_CFG3 0x28
960b3b4b KM	49	#define DA7210_PLL_DIV1 0x29
960b3b4b KM	50	#define DA7210_PLL_DIV2 0x2A
98615454 KM	51	#define DA7210_PLL_DIV3 0x2B
98615454 KM	52	#define DA7210_PLL 0x2C
960b3b4b KM	53	#define DA7210_A_HID_UNLOCK 0x8A
	54	#define DA7210_A_TEST_UNLOCK 0x8B
	55	#define DA7210_A_PLL1 0x90
	56	#define DA7210_A_CP_MODE 0xA7
98615454 KM	57
	58	/* STARTUP1 bit fields */
	59	#define DA7210_SC_MST_EN (1 << 0)
	60
	61	/* MIC_L bit fields */
	62	#define DA7210_MICBIAS_EN (1 << 6)
	63	#define DA7210_MIC_L_EN (1 << 7)
	64
	65	/* MIC_R bit fields */
	66	#define DA7210_MIC_R_EN (1 << 7)
	67
	68	/* INMIX_L bit fields */
	69	#define DA7210_IN_L_EN (1 << 7)
	70
	71	/* INMIX_R bit fields */
	72	#define DA7210_IN_R_EN (1 << 7)
	73
98615454 KM	74	/* ADC bit fields */
	75	#define DA7210_ADC_L_EN (1 << 3)
	76	#define DA7210_ADC_R_EN (1 << 7)
	77
3a9d6202 KM	78	/* DAC/ADC HPF fields */
	79	#define DA7210_VOICE_F0_MASK (0x7 << 4)
	80	#define DA7210_VOICE_F0_25 (1 << 4)
	81	#define DA7210_VOICE_EN (1 << 7)
c2151433	82
98615454 KM	83	/* DAC_SEL bit fields */
	84	#define DA7210_DAC_L_SRC_DAI_L (4 << 0)
	85	#define DA7210_DAC_L_EN (1 << 3)
	86	#define DA7210_DAC_R_SRC_DAI_R (5 << 4)
	87	#define DA7210_DAC_R_EN (1 << 7)
	88
	89	/* OUTMIX_L bit fields */
	90	#define DA7210_OUT_L_EN (1 << 7)
	91
	92	/* OUTMIX_R bit fields */
	93	#define DA7210_OUT_R_EN (1 << 7)
	94
	95	/* HP_CFG bit fields */
	96	#define DA7210_HP_2CAP_MODE (1 << 1)
	97	#define DA7210_HP_SENSE_EN (1 << 2)
	98	#define DA7210_HP_L_EN (1 << 3)
	99	#define DA7210_HP_MODE (1 << 6)
	100	#define DA7210_HP_R_EN (1 << 7)
	101
	102	/* DAI_SRC_SEL bit fields */
	103	#define DA7210_DAI_OUT_L_SRC (6 << 0)
	104	#define DA7210_DAI_OUT_R_SRC (7 << 4)
	105
	106	/* DAI_CFG1 bit fields */
	107	#define DA7210_DAI_WORD_S16_LE (0 << 0)
	108	#define DA7210_DAI_WORD_S24_LE (2 << 0)
	109	#define DA7210_DAI_FLEN_64BIT (1 << 2)
	110	#define DA7210_DAI_MODE_MASTER (1 << 7)
	111
	112	/* DAI_CFG3 bit fields */
	113	#define DA7210_DAI_FORMAT_I2SMODE (0 << 0)
	114	#define DA7210_DAI_OE (1 << 3)
	115	#define DA7210_DAI_EN (1 << 7)
	116
	117	/PLL_DIV3 bit fields /
	118	#define DA7210_MCLK_RANGE_10_20_MHZ (1 << 4)
	119	#define DA7210_PLL_BYP (1 << 6)
	120
	121	/* PLL bit fields */
3a9d6202 KM	122	#define DA7210_PLL_FS_MASK (0xF << 0)
3a9d6202 KM	123	#define DA7210_PLL_FS_8000 (0x1 << 0)
960b3b4b	124	#define DA7210_PLL_FS_11025 (0x2 << 0)
3a9d6202 KM	125	#define DA7210_PLL_FS_12000 (0x3 << 0)
3a9d6202 KM	126	#define DA7210_PLL_FS_16000 (0x5 << 0)
960b3b4b	127	#define DA7210_PLL_FS_22050 (0x6 << 0)
3a9d6202 KM	128	#define DA7210_PLL_FS_24000 (0x7 << 0)
3a9d6202 KM	129	#define DA7210_PLL_FS_32000 (0x9 << 0)
960b3b4b	130	#define DA7210_PLL_FS_44100 (0xA << 0)
3a9d6202	131	#define DA7210_PLL_FS_48000 (0xB << 0)
960b3b4b	132	#define DA7210_PLL_FS_88200 (0xE << 0)
3a9d6202	133	#define DA7210_PLL_FS_96000 (0xF << 0)
960b3b4b	134	#define DA7210_PLL_EN (0x1 << 7)
98615454 KM	135
	136	#define DA7210_VERSION "0.0.1"
	137
a7e7cd5b KM	138	/*
	139	* Playback Volume
	140	*
	141	* max : 0x3F (+15.0 dB)
	142	* (1.5 dB step)
	143	* min : 0x11 (-54.0 dB)
	144	* mute : 0x10
	145	* reserved : 0x00 - 0x0F
	146	*
	147	* FIXME
	148	*
	149	* Reserved area are considered as "mute".
	150	* -> min = -79.5 dB
	151	*/
	152	static const DECLARE_TLV_DB_SCALE(hp_out_tlv, -7950, 150, 1);
	153
	154	static const struct snd_kcontrol_new da7210_snd_controls[] = {
	155
	156	SOC_DOUBLE_R_TLV("HeadPhone Playback Volume",
	157	DA7210_HP_L_VOL, DA7210_HP_R_VOL,
	158	0, 0x3F, 0, hp_out_tlv),
	159	};
	160
98615454 KM	161	/* Codec private data */
98615454 KM	162	struct da7210_priv {
f0fba2ad LG	163	enum snd_soc_control_type control_type;
f0fba2ad LG	164	void *control_data;
98615454 KM	165	};
98615454 KM	166
98615454 KM	167	/*
	168	* Register cache
	169	*/
	170	static const u8 da7210_reg[] = {
	171	0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0 - R7 */
	172	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8 - RF */
	173	0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
	174	0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
	175	0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
	176	0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
	177	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
	178	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
	179	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
	180	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
	181	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
	182	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
	183	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
	184	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
	185	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
	186	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
	187	0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
	188	0x00, /* R88 */
	189	};
	190
	191	/*
	192	* Read da7210 register cache
	193	*/
	194	static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
	195	{
	196	u8 *cache = codec->reg_cache;
4f6f22d7	197	BUG_ON(reg >= ARRAY_SIZE(da7210_reg));
98615454 KM	198	return cache[reg];
	199	}
	200
	201	/*
	202	* Write to the da7210 register space
	203	*/
	204	static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
	205	{
	206	u8 *cache = codec->reg_cache;
	207	u8 data[2];
	208
f0fba2ad	209	BUG_ON(codec->driver->volatile_register);
98615454 KM	210
	211	data[0] = reg & 0xff;
	212	data[1] = value & 0xff;
	213
f0fba2ad	214	if (reg >= codec->driver->reg_cache_size)
98615454 KM	215	return -EIO;
	216
	217	if (2 != codec->hw_write(codec->control_data, data, 2))
	218	return -EIO;
	219
	220	cache[reg] = value;
	221	return 0;
	222	}
	223
	224	/*
	225	* Read from the da7210 register space.
	226	*/
	227	static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
	228	{
	229	if (DA7210_STATUS == reg)
	230	return i2c_smbus_read_byte_data(codec->control_data, reg);
	231
	232	return da7210_read_reg_cache(codec, reg);
	233	}
	234
	235	static int da7210_startup(struct snd_pcm_substream *substream,
	236	struct snd_soc_dai *dai)
	237	{
	238	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
	239	struct snd_soc_codec *codec = dai->codec;
	240
	241	if (is_play) {
98615454 KM	242	/* Enable Out */
	243	snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
	244	snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
	245
	246	} else {
	247	/* Volume 7 */
	248	snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
	249	snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
	250
	251	/* Enable Mic */
	252	snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
	253	snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
	254	}
	255
	256	return 0;
	257	}
	258
	259	/*
	260	* Set PCM DAI word length.
	261	*/
	262	static int da7210_hw_params(struct snd_pcm_substream *substream,
	263	struct snd_pcm_hw_params *params,
	264	struct snd_soc_dai *dai)
	265	{
	266	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	267	struct snd_soc_codec *codec = rtd->codec;
98615454	268	u32 dai_cfg1;
3a9d6202	269	u32 hpf_reg, hpf_mask, hpf_value;
960b3b4b	270	u32 fs, bypass;
98615454 KM	271
	272	/* set DAI source to Left and Right ADC */
	273	da7210_write(codec, DA7210_DAI_SRC_SEL,
	274	DA7210_DAI_OUT_R_SRC \| DA7210_DAI_OUT_L_SRC);
	275
	276	/* Enable DAI */
	277	da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE \| DA7210_DAI_EN);
	278
	279	dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
	280
	281	switch (params_format(params)) {
	282	case SNDRV_PCM_FORMAT_S16_LE:
	283	dai_cfg1 \|= DA7210_DAI_WORD_S16_LE;
	284	break;
	285	case SNDRV_PCM_FORMAT_S24_LE:
	286	dai_cfg1 \|= DA7210_DAI_WORD_S24_LE;
	287	break;
	288	default:
	289	return -EINVAL;
	290	}
	291
	292	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	293
3a9d6202 KM	294	hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
	295	DA7210_DAC_HPF : DA7210_ADC_HPF;
	296
98615454	297	switch (params_rate(params)) {
3a9d6202 KM	298	case 8000:
	299	fs = DA7210_PLL_FS_8000;
	300	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	301	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
960b3b4b KM	302	bypass = DA7210_PLL_BYP;
	303	break;
	304	case 11025:
	305	fs = DA7210_PLL_FS_11025;
	306	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	307	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
	308	bypass = 0;
3a9d6202 KM	309	break;
	310	case 12000:
	311	fs = DA7210_PLL_FS_12000;
	312	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	313	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
960b3b4b	314	bypass = DA7210_PLL_BYP;
3a9d6202 KM	315	break;
	316	case 16000:
	317	fs = DA7210_PLL_FS_16000;
	318	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	319	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
960b3b4b KM	320	bypass = DA7210_PLL_BYP;
	321	break;
	322	case 22050:
	323	fs = DA7210_PLL_FS_22050;
	324	hpf_mask = DA7210_VOICE_EN;
	325	hpf_value = 0;
	326	bypass = 0;
3a9d6202 KM	327	break;
	328	case 32000:
	329	fs = DA7210_PLL_FS_32000;
	330	hpf_mask = DA7210_VOICE_EN;
	331	hpf_value = 0;
960b3b4b KM	332	bypass = DA7210_PLL_BYP;
	333	break;
	334	case 44100:
	335	fs = DA7210_PLL_FS_44100;
	336	hpf_mask = DA7210_VOICE_EN;
	337	hpf_value = 0;
	338	bypass = 0;
3a9d6202	339	break;
98615454	340	case 48000:
3a9d6202 KM	341	fs = DA7210_PLL_FS_48000;
	342	hpf_mask = DA7210_VOICE_EN;
	343	hpf_value = 0;
960b3b4b KM	344	bypass = DA7210_PLL_BYP;
	345	break;
	346	case 88200:
	347	fs = DA7210_PLL_FS_88200;
	348	hpf_mask = DA7210_VOICE_EN;
	349	hpf_value = 0;
	350	bypass = 0;
3a9d6202 KM	351	break;
	352	case 96000:
	353	fs = DA7210_PLL_FS_96000;
	354	hpf_mask = DA7210_VOICE_EN;
	355	hpf_value = 0;
960b3b4b	356	bypass = DA7210_PLL_BYP;
98615454 KM	357	break;
	358	default:
	359	return -EINVAL;
	360	}
	361
960b3b4b KM	362	/* Disable active mode */
	363	snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);
	364
3a9d6202 KM	365	snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
3a9d6202 KM	366	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
960b3b4b KM	367	snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);
	368
	369	/* Enable active mode */
	370	snd_soc_update_bits(codec, DA7210_STARTUP1,
	371	DA7210_SC_MST_EN, DA7210_SC_MST_EN);
98615454 KM	372
	373	return 0;
	374	}
	375
	376	/*
	377	* Set DAI mode and Format
	378	*/
	379	static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
	380	{
	381	struct snd_soc_codec *codec = codec_dai->codec;
	382	u32 dai_cfg1;
	383	u32 dai_cfg3;
	384
	385	dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
	386	dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
	387
	388	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	389	case SND_SOC_DAIFMT_CBM_CFM:
	390	dai_cfg1 \|= DA7210_DAI_MODE_MASTER;
	391	break;
	392	default:
	393	return -EINVAL;
	394	}
	395
	396	/* FIXME
	397	*
	398	* It support I2S only now
	399	*/
	400	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	401	case SND_SOC_DAIFMT_I2S:
	402	dai_cfg3 \|= DA7210_DAI_FORMAT_I2SMODE;
	403	break;
	404	default:
	405	return -EINVAL;
	406	}
	407
	408	/* FIXME
	409	*
	410	* It support 64bit data transmission only now
	411	*/
	412	dai_cfg1 \|= DA7210_DAI_FLEN_64BIT;
	413
	414	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	415	da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
	416
	417	return 0;
	418	}
	419
	420	#define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S24_LE)
	421
	422	/* DAI operations */
	423	static struct snd_soc_dai_ops da7210_dai_ops = {
	424	.startup = da7210_startup,
	425	.hw_params = da7210_hw_params,
	426	.set_fmt = da7210_set_dai_fmt,
	427	};
	428
f0fba2ad LG	429	static struct snd_soc_dai_driver da7210_dai = {
f0fba2ad LG	430	.name = "da7210-hifi",
98615454 KM	431	/* playback capabilities */
	432	.playback = {
	433	.stream_name = "Playback",
	434	.channels_min = 1,
	435	.channels_max = 2,
	436	.rates = SNDRV_PCM_RATE_8000_96000,
	437	.formats = DA7210_FORMATS,
	438	},
	439	/* capture capabilities */
	440	.capture = {
	441	.stream_name = "Capture",
	442	.channels_min = 1,
	443	.channels_max = 2,
	444	.rates = SNDRV_PCM_RATE_8000_96000,
	445	.formats = DA7210_FORMATS,
	446	},
	447	.ops = &da7210_dai_ops,
960b3b4b	448	.symmetric_rates = 1,
98615454	449	};
98615454	450
f0fba2ad	451	static int da7210_probe(struct snd_soc_codec *codec)
98615454	452	{
f0fba2ad	453	struct da7210_priv *da7210 = snd_soc_codec_get_drvdata(codec);
98615454	454
f0fba2ad	455	dev_info(codec->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
98615454	456
4c62ed9b	457	codec->control_data = da7210->control_data;
98615454	458	codec->hw_write = (hw_write_t)i2c_master_send;
98615454 KM	459
	460	/* FIXME
	461	*
	462	* This driver use fixed value here
960b3b4b KM	463	* And below settings expects MCLK = 12.288MHz
	464	*
	465	* When you select different MCLK, please check...
	466	* DA7210_PLL_DIV1 val
	467	* DA7210_PLL_DIV2 val
	468	* DA7210_PLL_DIV3 val
	469	* DA7210_PLL_DIV3 :: DA7210_MCLK_RANGExxx
98615454 KM	470	*/
98615454 KM	471
960b3b4b KM	472	/*
960b3b4b KM	473	* make sure that DA7210 use bypass mode before start up
98615454	474	*/
960b3b4b KM	475	da7210_write(codec, DA7210_STARTUP1, 0);
	476	da7210_write(codec, DA7210_PLL_DIV3,
	477	DA7210_MCLK_RANGE_10_20_MHZ \| DA7210_PLL_BYP);
98615454 KM	478
	479	/*
	480	* ADC settings
	481	*/
	482
	483	/* Enable Left & Right MIC PGA and Mic Bias */
	484	da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN \| DA7210_MICBIAS_EN);
	485	da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
	486
	487	/* Enable Left and Right input PGA */
	488	da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
	489	da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
	490
	491	/* Enable Left and Right ADC */
	492	da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN \| DA7210_ADC_R_EN);
	493
	494	/*
	495	* DAC settings
	496	*/
	497
	498	/* Enable Left and Right DAC */
	499	da7210_write(codec, DA7210_DAC_SEL,
	500	DA7210_DAC_L_SRC_DAI_L \| DA7210_DAC_L_EN \|
	501	DA7210_DAC_R_SRC_DAI_R \| DA7210_DAC_R_EN);
	502
	503	/* Enable Left and Right out PGA */
	504	da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
	505	da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
	506
	507	/* Enable Left and Right HeadPhone PGA */
	508	da7210_write(codec, DA7210_HP_CFG,
	509	DA7210_HP_2CAP_MODE \| DA7210_HP_SENSE_EN \|
	510	DA7210_HP_L_EN \| DA7210_HP_MODE \| DA7210_HP_R_EN);
	511
	512	/* Diable PLL and bypass it */
	513	da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
	514
960b3b4b KM	515	/*
	516	* If 48kHz sound came, it use bypass mode,
	517	* and when it is 44.1kHz, it use PLL.
	518	*
	519	* This time, this driver sets PLL always ON
	520	* and controls bypass/PLL mode by switching
	521	* DA7210_PLL_DIV3 :: DA7210_PLL_BYP bit.
	522	* see da7210_hw_params
	523	*/
	524	da7210_write(codec, DA7210_PLL_DIV1, 0xE5); /* MCLK = 12.288MHz */
	525	da7210_write(codec, DA7210_PLL_DIV2, 0x99);
	526	da7210_write(codec, DA7210_PLL_DIV3, 0x0A \|
98615454	527	DA7210_MCLK_RANGE_10_20_MHZ \| DA7210_PLL_BYP);
960b3b4b KM	528	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_EN, DA7210_PLL_EN);
	529
	530	/* As suggested by Dialog */
	531	da7210_write(codec, DA7210_A_HID_UNLOCK, 0x8B); /* unlock */
	532	da7210_write(codec, DA7210_A_TEST_UNLOCK, 0xB4);
	533	da7210_write(codec, DA7210_A_PLL1, 0x01);
	534	da7210_write(codec, DA7210_A_CP_MODE, 0x7C);
	535	da7210_write(codec, DA7210_A_HID_UNLOCK, 0x00); /* re-lock */
	536	da7210_write(codec, DA7210_A_TEST_UNLOCK, 0x00);
98615454 KM	537
	538	/* Activate all enabled subsystem */
	539	da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
	540
f0fba2ad LG	541	snd_soc_add_controls(codec, da7210_snd_controls,
f0fba2ad LG	542	ARRAY_SIZE(da7210_snd_controls));
98615454	543
f0fba2ad	544	dev_info(codec->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
98615454	545
f0fba2ad	546	return 0;
98615454 KM	547	}
98615454 KM	548
f0fba2ad	549	static struct snd_soc_codec_driver soc_codec_dev_da7210 = {
4c62ed9b KM	550	.probe = da7210_probe,
	551	.read = da7210_read,
	552	.write = da7210_write,
	553	.reg_cache_size = ARRAY_SIZE(da7210_reg),
	554	.reg_word_size = sizeof(u8),
f0fba2ad LG	555	.reg_cache_default = da7210_reg,
	556	};
	557
98615454	558	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
735fe4cf MB	559	static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
735fe4cf MB	560	const struct i2c_device_id *id)
98615454 KM	561	{
98615454 KM	562	struct da7210_priv *da7210;
98615454 KM	563	int ret;
	564
	565	da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
	566	if (!da7210)
	567	return -ENOMEM;
	568
98615454	569	i2c_set_clientdata(i2c, da7210);
f0fba2ad LG	570	da7210->control_data = i2c;
f0fba2ad LG	571	da7210->control_type = SND_SOC_I2C;
98615454	572
f0fba2ad LG	573	ret = snd_soc_register_codec(&i2c->dev,
	574	&soc_codec_dev_da7210, &da7210_dai, 1);
	575	if (ret < 0)
085efd28	576	kfree(da7210);
98615454 KM	577
	578	return ret;
	579	}
	580
735fe4cf	581	static int __devexit da7210_i2c_remove(struct i2c_client *client)
98615454	582	{
f0fba2ad LG	583	snd_soc_unregister_codec(&client->dev);
f0fba2ad LG	584	kfree(i2c_get_clientdata(client));
98615454 KM	585	return 0;
	586	}
	587
	588	static const struct i2c_device_id da7210_i2c_id[] = {
	589	{ "da7210", 0 },
	590	{ }
	591	};
	592	MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
	593
	594	/* I2C codec control layer */
	595	static struct i2c_driver da7210_i2c_driver = {
	596	.driver = {
f0fba2ad	597	.name = "da7210-codec",
98615454 KM	598	.owner = THIS_MODULE,
98615454 KM	599	},
4c62ed9b KM	600	.probe = da7210_i2c_probe,
	601	.remove = __devexit_p(da7210_i2c_remove),
	602	.id_table = da7210_i2c_id,
98615454 KM	603	};
	604	#endif
	605
98615454 KM	606	static int __init da7210_modinit(void)
	607	{
	608	int ret = 0;
	609	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	610	ret = i2c_add_driver(&da7210_i2c_driver);
	611	#endif
	612	return ret;
	613	}
	614	module_init(da7210_modinit);
	615
	616	static void __exit da7210_exit(void)
	617	{
	618	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	619	i2c_del_driver(&da7210_i2c_driver);
	620	#endif
	621	}
	622	module_exit(da7210_exit);
	623
	624	MODULE_DESCRIPTION("ASoC DA7210 driver");
	625	MODULE_AUTHOR("David Chen, Kuninori Morimoto");
	626	MODULE_LICENSE("GPL");