[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-dapm.h>
#include <sound/initval.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_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"

/* 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, 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,
};

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,
	.symmetric_rates = 1,
};
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);

	snd_soc_codec_set_drvdata(codec, 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
	 * 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);

	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
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>
98615454	24	#include <sound/soc-dapm.h>
98615454	25	#include <sound/initval.h>
98615454 KM	26
	27	#include "da7210.h"
	28
	29	/* DA7210 register space */
	30	#define DA7210_STATUS 0x02
	31	#define DA7210_STARTUP1 0x03
	32	#define DA7210_MIC_L 0x07
	33	#define DA7210_MIC_R 0x08
	34	#define DA7210_INMIX_L 0x0D
	35	#define DA7210_INMIX_R 0x0E
	36	#define DA7210_ADC_HPF 0x0F
	37	#define DA7210_ADC 0x10
	38	#define DA7210_DAC_HPF 0x14
	39	#define DA7210_DAC_L 0x15
	40	#define DA7210_DAC_R 0x16
	41	#define DA7210_DAC_SEL 0x17
	42	#define DA7210_OUTMIX_L 0x1C
	43	#define DA7210_OUTMIX_R 0x1D
	44	#define DA7210_HP_L_VOL 0x21
	45	#define DA7210_HP_R_VOL 0x22
	46	#define DA7210_HP_CFG 0x23
	47	#define DA7210_DAI_SRC_SEL 0x25
	48	#define DA7210_DAI_CFG1 0x26
	49	#define DA7210_DAI_CFG3 0x28
960b3b4b KM	50	#define DA7210_PLL_DIV1 0x29
960b3b4b KM	51	#define DA7210_PLL_DIV2 0x2A
98615454 KM	52	#define DA7210_PLL_DIV3 0x2B
98615454 KM	53	#define DA7210_PLL 0x2C
960b3b4b KM	54	#define DA7210_A_HID_UNLOCK 0x8A
	55	#define DA7210_A_TEST_UNLOCK 0x8B
	56	#define DA7210_A_PLL1 0x90
	57	#define DA7210_A_CP_MODE 0xA7
98615454 KM	58
	59	/* STARTUP1 bit fields */
	60	#define DA7210_SC_MST_EN (1 << 0)
	61
	62	/* MIC_L bit fields */
	63	#define DA7210_MICBIAS_EN (1 << 6)
	64	#define DA7210_MIC_L_EN (1 << 7)
	65
	66	/* MIC_R bit fields */
	67	#define DA7210_MIC_R_EN (1 << 7)
	68
	69	/* INMIX_L bit fields */
	70	#define DA7210_IN_L_EN (1 << 7)
	71
	72	/* INMIX_R bit fields */
	73	#define DA7210_IN_R_EN (1 << 7)
	74
98615454 KM	75	/* ADC bit fields */
	76	#define DA7210_ADC_L_EN (1 << 3)
	77	#define DA7210_ADC_R_EN (1 << 7)
	78
3a9d6202 KM	79	/* DAC/ADC HPF fields */
	80	#define DA7210_VOICE_F0_MASK (0x7 << 4)
	81	#define DA7210_VOICE_F0_25 (1 << 4)
	82	#define DA7210_VOICE_EN (1 << 7)
c2151433	83
98615454 KM	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 */
3a9d6202 KM	123	#define DA7210_PLL_FS_MASK (0xF << 0)
3a9d6202 KM	124	#define DA7210_PLL_FS_8000 (0x1 << 0)
960b3b4b	125	#define DA7210_PLL_FS_11025 (0x2 << 0)
3a9d6202 KM	126	#define DA7210_PLL_FS_12000 (0x3 << 0)
3a9d6202 KM	127	#define DA7210_PLL_FS_16000 (0x5 << 0)
960b3b4b	128	#define DA7210_PLL_FS_22050 (0x6 << 0)
3a9d6202 KM	129	#define DA7210_PLL_FS_24000 (0x7 << 0)
3a9d6202 KM	130	#define DA7210_PLL_FS_32000 (0x9 << 0)
960b3b4b	131	#define DA7210_PLL_FS_44100 (0xA << 0)
3a9d6202	132	#define DA7210_PLL_FS_48000 (0xB << 0)
960b3b4b	133	#define DA7210_PLL_FS_88200 (0xE << 0)
3a9d6202	134	#define DA7210_PLL_FS_96000 (0xF << 0)
960b3b4b	135	#define DA7210_PLL_EN (0x1 << 7)
98615454 KM	136
	137	#define DA7210_VERSION "0.0.1"
	138
	139	/* Codec private data */
	140	struct da7210_priv {
	141	struct snd_soc_codec codec;
	142	};
	143
	144	static struct snd_soc_codec *da7210_codec;
	145
	146	/*
	147	* Register cache
	148	*/
	149	static const u8 da7210_reg[] = {
	150	0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0 - R7 */
	151	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8 - RF */
	152	0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
	153	0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
	154	0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
	155	0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
	156	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
	157	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
	158	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
	159	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
	160	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
	161	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
	162	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
	163	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
	164	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
	165	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
	166	0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
	167	0x00, /* R88 */
	168	};
	169
	170	/*
	171	* Read da7210 register cache
	172	*/
	173	static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
	174	{
	175	u8 *cache = codec->reg_cache;
4f6f22d7	176	BUG_ON(reg >= ARRAY_SIZE(da7210_reg));
98615454 KM	177	return cache[reg];
	178	}
	179
	180	/*
	181	* Write to the da7210 register space
	182	*/
	183	static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
	184	{
	185	u8 *cache = codec->reg_cache;
	186	u8 data[2];
	187
	188	BUG_ON(codec->volatile_register);
	189
	190	data[0] = reg & 0xff;
	191	data[1] = value & 0xff;
	192
	193	if (reg >= codec->reg_cache_size)
	194	return -EIO;
	195
	196	if (2 != codec->hw_write(codec->control_data, data, 2))
	197	return -EIO;
	198
	199	cache[reg] = value;
	200	return 0;
	201	}
	202
	203	/*
	204	* Read from the da7210 register space.
	205	*/
	206	static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
	207	{
	208	if (DA7210_STATUS == reg)
	209	return i2c_smbus_read_byte_data(codec->control_data, reg);
	210
	211	return da7210_read_reg_cache(codec, reg);
	212	}
	213
	214	static int da7210_startup(struct snd_pcm_substream *substream,
	215	struct snd_soc_dai *dai)
	216	{
	217	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
	218	struct snd_soc_codec *codec = dai->codec;
	219
	220	if (is_play) {
	221	/* PlayBack Volume 40 */
	222	snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
	223	snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);
	224
	225	/* Enable Out */
	226	snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
	227	snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
	228
	229	} else {
	230	/* Volume 7 */
	231	snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
	232	snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
	233
	234	/* Enable Mic */
	235	snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
	236	snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
	237	}
	238
	239	return 0;
	240	}
241
242	/*
243	* Set PCM DAI word length.
244	*/
245	static int da7210_hw_params(struct snd_pcm_substream *substream,
246	struct snd_pcm_hw_params *params,
247	struct snd_soc_dai *dai)
248	{
249	struct snd_soc_pcm_runtime *rtd = substream->private_data;
250	struct snd_soc_device *socdev = rtd->socdev;
251	struct snd_soc_codec *codec = socdev->card->codec;
252	u32 dai_cfg1;
3a9d6202	253	u32 hpf_reg, hpf_mask, hpf_value;
960b3b4b	254	u32 fs, bypass;
98615454 KM	255
	256	/* set DAI source to Left and Right ADC */
	257	da7210_write(codec, DA7210_DAI_SRC_SEL,
	258	DA7210_DAI_OUT_R_SRC \| DA7210_DAI_OUT_L_SRC);
	259
	260	/* Enable DAI */
	261	da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE \| DA7210_DAI_EN);
	262
	263	dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
	264
	265	switch (params_format(params)) {
	266	case SNDRV_PCM_FORMAT_S16_LE:
	267	dai_cfg1 \|= DA7210_DAI_WORD_S16_LE;
	268	break;
	269	case SNDRV_PCM_FORMAT_S24_LE:
	270	dai_cfg1 \|= DA7210_DAI_WORD_S24_LE;
	271	break;
	272	default:
	273	return -EINVAL;
	274	}
	275
	276	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	277
3a9d6202 KM	278	hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
	279	DA7210_DAC_HPF : DA7210_ADC_HPF;
	280
98615454	281	switch (params_rate(params)) {
3a9d6202 KM	282	case 8000:
	283	fs = DA7210_PLL_FS_8000;
	284	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	285	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
960b3b4b KM	286	bypass = DA7210_PLL_BYP;
	287	break;
	288	case 11025:
	289	fs = DA7210_PLL_FS_11025;
	290	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	291	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
	292	bypass = 0;
3a9d6202 KM	293	break;
	294	case 12000:
	295	fs = DA7210_PLL_FS_12000;
	296	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	297	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
960b3b4b	298	bypass = DA7210_PLL_BYP;
3a9d6202 KM	299	break;
	300	case 16000:
	301	fs = DA7210_PLL_FS_16000;
	302	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	303	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
960b3b4b KM	304	bypass = DA7210_PLL_BYP;
	305	break;
	306	case 22050:
	307	fs = DA7210_PLL_FS_22050;
	308	hpf_mask = DA7210_VOICE_EN;
	309	hpf_value = 0;
	310	bypass = 0;
3a9d6202 KM	311	break;
	312	case 32000:
	313	fs = DA7210_PLL_FS_32000;
	314	hpf_mask = DA7210_VOICE_EN;
	315	hpf_value = 0;
960b3b4b KM	316	bypass = DA7210_PLL_BYP;
	317	break;
	318	case 44100:
	319	fs = DA7210_PLL_FS_44100;
	320	hpf_mask = DA7210_VOICE_EN;
	321	hpf_value = 0;
	322	bypass = 0;
3a9d6202	323	break;
98615454	324	case 48000:
3a9d6202 KM	325	fs = DA7210_PLL_FS_48000;
	326	hpf_mask = DA7210_VOICE_EN;
	327	hpf_value = 0;
960b3b4b KM	328	bypass = DA7210_PLL_BYP;
	329	break;
	330	case 88200:
	331	fs = DA7210_PLL_FS_88200;
	332	hpf_mask = DA7210_VOICE_EN;
	333	hpf_value = 0;
	334	bypass = 0;
3a9d6202 KM	335	break;
	336	case 96000:
	337	fs = DA7210_PLL_FS_96000;
	338	hpf_mask = DA7210_VOICE_EN;
	339	hpf_value = 0;
960b3b4b	340	bypass = DA7210_PLL_BYP;
98615454 KM	341	break;
	342	default:
	343	return -EINVAL;
	344	}
	345
960b3b4b KM	346	/* Disable active mode */
	347	snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);
	348
3a9d6202 KM	349	snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
3a9d6202 KM	350	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
960b3b4b KM	351	snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);
	352
	353	/* Enable active mode */
	354	snd_soc_update_bits(codec, DA7210_STARTUP1,
	355	DA7210_SC_MST_EN, DA7210_SC_MST_EN);
98615454 KM	356
	357	return 0;
	358	}
	359
	360	/*
	361	* Set DAI mode and Format
	362	*/
	363	static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
	364	{
	365	struct snd_soc_codec *codec = codec_dai->codec;
	366	u32 dai_cfg1;
	367	u32 dai_cfg3;
	368
	369	dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
	370	dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
	371
	372	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	373	case SND_SOC_DAIFMT_CBM_CFM:
	374	dai_cfg1 \|= DA7210_DAI_MODE_MASTER;
	375	break;
	376	default:
	377	return -EINVAL;
	378	}
	379
	380	/* FIXME
	381	*
	382	* It support I2S only now
	383	*/
	384	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	385	case SND_SOC_DAIFMT_I2S:
	386	dai_cfg3 \|= DA7210_DAI_FORMAT_I2SMODE;
	387	break;
	388	default:
	389	return -EINVAL;
	390	}
	391
	392	/* FIXME
	393	*
	394	* It support 64bit data transmission only now
	395	*/
	396	dai_cfg1 \|= DA7210_DAI_FLEN_64BIT;
	397
	398	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	399	da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
	400
	401	return 0;
	402	}
	403
	404	#define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S24_LE)
	405
	406	/* DAI operations */
	407	static struct snd_soc_dai_ops da7210_dai_ops = {
	408	.startup = da7210_startup,
	409	.hw_params = da7210_hw_params,
	410	.set_fmt = da7210_set_dai_fmt,
	411	};
	412
	413	struct snd_soc_dai da7210_dai = {
	414	.name = "DA7210 IIS",
	415	.id = 0,
	416	/* playback capabilities */
	417	.playback = {
	418	.stream_name = "Playback",
	419	.channels_min = 1,
420	.channels_max = 2,
421	.rates = SNDRV_PCM_RATE_8000_96000,
422	.formats = DA7210_FORMATS,
423	},
424	/* capture capabilities */
425	.capture = {
426	.stream_name = "Capture",
427	.channels_min = 1,
428	.channels_max = 2,
429	.rates = SNDRV_PCM_RATE_8000_96000,
430	.formats = DA7210_FORMATS,
431	},
432	.ops = &da7210_dai_ops,
960b3b4b	433	.symmetric_rates = 1,
98615454 KM	434	};
	435	EXPORT_SYMBOL_GPL(da7210_dai);
	436
	437	/*
	438	* Initialize the DA7210 driver
	439	* register the mixer and dsp interfaces with the kernel
	440	*/
	441	static int da7210_init(struct da7210_priv *da7210)
	442	{
	443	struct snd_soc_codec *codec = &da7210->codec;
	444	int ret = 0;
	445
	446	if (da7210_codec) {
	447	dev_err(codec->dev, "Another da7210 is registered\n");
	448	return -EINVAL;
	449	}
	450
	451	mutex_init(&codec->mutex);
	452	INIT_LIST_HEAD(&codec->dapm_widgets);
	453	INIT_LIST_HEAD(&codec->dapm_paths);
	454
b2c812e2	455	snd_soc_codec_set_drvdata(codec, da7210);
98615454 KM	456	codec->name = "DA7210";
	457	codec->owner = THIS_MODULE;
	458	codec->read = da7210_read;
	459	codec->write = da7210_write;
	460	codec->dai = &da7210_dai;
	461	codec->num_dai = 1;
	462	codec->hw_write = (hw_write_t)i2c_master_send;
	463	codec->reg_cache_size = ARRAY_SIZE(da7210_reg);
	464	codec->reg_cache = kmemdup(da7210_reg,
	465	sizeof(da7210_reg), GFP_KERNEL);
	466
	467	if (!codec->reg_cache)
	468	return -ENOMEM;
	469
	470	da7210_dai.dev = codec->dev;
	471	da7210_codec = codec;
	472
	473	ret = snd_soc_register_codec(codec);
	474	if (ret) {
	475	dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
	476	goto init_err;
	477	}
	478
	479	ret = snd_soc_register_dai(&da7210_dai);
	480	if (ret) {
	481	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
	482	goto init_err;
	483	}
	484
	485	/* FIXME
	486	*
	487	* This driver use fixed value here
960b3b4b KM	488	* And below settings expects MCLK = 12.288MHz
	489	*
	490	* When you select different MCLK, please check...
	491	* DA7210_PLL_DIV1 val
	492	* DA7210_PLL_DIV2 val
	493	* DA7210_PLL_DIV3 val
	494	* DA7210_PLL_DIV3 :: DA7210_MCLK_RANGExxx
98615454 KM	495	*/
98615454 KM	496
960b3b4b KM	497	/*
960b3b4b KM	498	* make sure that DA7210 use bypass mode before start up
98615454	499	*/
960b3b4b KM	500	da7210_write(codec, DA7210_STARTUP1, 0);
	501	da7210_write(codec, DA7210_PLL_DIV3,
	502	DA7210_MCLK_RANGE_10_20_MHZ \| DA7210_PLL_BYP);
98615454 KM	503
	504	/*
	505	* ADC settings
	506	*/
	507
	508	/* Enable Left & Right MIC PGA and Mic Bias */
	509	da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN \| DA7210_MICBIAS_EN);
	510	da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
	511
	512	/* Enable Left and Right input PGA */
	513	da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
	514	da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
	515
	516	/* Enable Left and Right ADC */
	517	da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN \| DA7210_ADC_R_EN);
	518
	519	/*
	520	* DAC settings
	521	*/
	522
	523	/* Enable Left and Right DAC */
	524	da7210_write(codec, DA7210_DAC_SEL,
	525	DA7210_DAC_L_SRC_DAI_L \| DA7210_DAC_L_EN \|
	526	DA7210_DAC_R_SRC_DAI_R \| DA7210_DAC_R_EN);
	527
	528	/* Enable Left and Right out PGA */
	529	da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
	530	da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
	531
	532	/* Enable Left and Right HeadPhone PGA */
	533	da7210_write(codec, DA7210_HP_CFG,
	534	DA7210_HP_2CAP_MODE \| DA7210_HP_SENSE_EN \|
	535	DA7210_HP_L_EN \| DA7210_HP_MODE \| DA7210_HP_R_EN);
	536
	537	/* Diable PLL and bypass it */
	538	da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
	539
960b3b4b KM	540	/*
	541	* If 48kHz sound came, it use bypass mode,
	542	* and when it is 44.1kHz, it use PLL.
	543	*
	544	* This time, this driver sets PLL always ON
	545	* and controls bypass/PLL mode by switching
	546	* DA7210_PLL_DIV3 :: DA7210_PLL_BYP bit.
	547	* see da7210_hw_params
	548	*/
	549	da7210_write(codec, DA7210_PLL_DIV1, 0xE5); /* MCLK = 12.288MHz */
	550	da7210_write(codec, DA7210_PLL_DIV2, 0x99);
	551	da7210_write(codec, DA7210_PLL_DIV3, 0x0A \|
98615454	552	DA7210_MCLK_RANGE_10_20_MHZ \| DA7210_PLL_BYP);
960b3b4b KM	553	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_EN, DA7210_PLL_EN);
	554
	555	/* As suggested by Dialog */
	556	da7210_write(codec, DA7210_A_HID_UNLOCK, 0x8B); /* unlock */
	557	da7210_write(codec, DA7210_A_TEST_UNLOCK, 0xB4);
	558	da7210_write(codec, DA7210_A_PLL1, 0x01);
	559	da7210_write(codec, DA7210_A_CP_MODE, 0x7C);
	560	da7210_write(codec, DA7210_A_HID_UNLOCK, 0x00); /* re-lock */
	561	da7210_write(codec, DA7210_A_TEST_UNLOCK, 0x00);
98615454 KM	562
	563	/* Activate all enabled subsystem */
	564	da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
	565
	566	return ret;
	567
	568	init_err:
	569	kfree(codec->reg_cache);
	570	codec->reg_cache = NULL;
	571
	572	return ret;
	573
	574	}
	575
	576	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
735fe4cf MB	577	static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
735fe4cf MB	578	const struct i2c_device_id *id)
98615454 KM	579	{
	580	struct da7210_priv *da7210;
	581	struct snd_soc_codec *codec;
	582	int ret;
	583
	584	da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
	585	if (!da7210)
	586	return -ENOMEM;
	587
	588	codec = &da7210->codec;
	589	codec->dev = &i2c->dev;
	590
	591	i2c_set_clientdata(i2c, da7210);
	592	codec->control_data = i2c;
	593
	594	ret = da7210_init(da7210);
	595	if (ret < 0)
	596	pr_err("Failed to initialise da7210 audio codec\n");
	597
	598	return ret;
	599	}
	600
735fe4cf	601	static int __devexit da7210_i2c_remove(struct i2c_client *client)
98615454 KM	602	{
	603	struct da7210_priv *da7210 = i2c_get_clientdata(client);
	604
	605	snd_soc_unregister_dai(&da7210_dai);
	606	kfree(da7210->codec.reg_cache);
	607	kfree(da7210);
	608	da7210_codec = NULL;
	609
	610	return 0;
	611	}
	612
	613	static const struct i2c_device_id da7210_i2c_id[] = {
	614	{ "da7210", 0 },
	615	{ }
	616	};
	617	MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
	618
	619	/* I2C codec control layer */
	620	static struct i2c_driver da7210_i2c_driver = {
	621	.driver = {
	622	.name = "DA7210 I2C Codec",
	623	.owner = THIS_MODULE,
	624	},
	625	.probe = da7210_i2c_probe,
	626	.remove = __devexit_p(da7210_i2c_remove),
	627	.id_table = da7210_i2c_id,
	628	};
	629	#endif
	630
	631	static int da7210_probe(struct platform_device *pdev)
	632	{
	633	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	634	struct snd_soc_codec *codec;
	635	int ret;
	636
	637	if (!da7210_codec) {
	638	dev_err(&pdev->dev, "Codec device not registered\n");
	639	return -ENODEV;
	640	}
	641
	642	socdev->card->codec = da7210_codec;
	643	codec = da7210_codec;
	644
	645	/* Register pcms */
	646	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	647	if (ret < 0)
	648	goto pcm_err;
	649
	650	dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
	651
	652	pcm_err:
	653	return ret;
	654	}
	655
	656	static int da7210_remove(struct platform_device *pdev)
	657	{
	658	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	659
	660	snd_soc_free_pcms(socdev);
	661	snd_soc_dapm_free(socdev);
	662
	663	return 0;
	664	}
	665
666	struct snd_soc_codec_device soc_codec_dev_da7210 = {
667	.probe = da7210_probe,
668	.remove = da7210_remove,
669	};
670	EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);
671
672	static int __init da7210_modinit(void)
673	{
674	int ret = 0;
675	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
676	ret = i2c_add_driver(&da7210_i2c_driver);
677	#endif
678	return ret;
679	}
680	module_init(da7210_modinit);
681
682	static void __exit da7210_exit(void)
683	{
684	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
685	i2c_del_driver(&da7210_i2c_driver);
686	#endif
687	}
688	module_exit(da7210_exit);
689
690	MODULE_DESCRIPTION("ASoC DA7210 driver");
691	MODULE_AUTHOR("David Chen, Kuninori Morimoto");
692	MODULE_LICENSE("GPL");