[net-next-2.6.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 <sound/tlv.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"

/*
 * 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 {
	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) {
		/* 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 codec_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;

codec_err:
	snd_soc_unregister_codec(codec);
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");
		kfree(da7210);
	}

	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;

	snd_soc_add_controls(da7210_codec, da7210_snd_controls,
			     ARRAY_SIZE(da7210_snd_controls));

	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>
a7e7cd5b	26	#include <sound/tlv.h>
98615454 KM	27
	28	#include "da7210.h"
	29
	30	/* DA7210 register space */
	31	#define DA7210_STATUS 0x02
	32	#define DA7210_STARTUP1 0x03
	33	#define DA7210_MIC_L 0x07
	34	#define DA7210_MIC_R 0x08
	35	#define DA7210_INMIX_L 0x0D
	36	#define DA7210_INMIX_R 0x0E
	37	#define DA7210_ADC_HPF 0x0F
	38	#define DA7210_ADC 0x10
	39	#define DA7210_DAC_HPF 0x14
	40	#define DA7210_DAC_L 0x15
	41	#define DA7210_DAC_R 0x16
	42	#define DA7210_DAC_SEL 0x17
	43	#define DA7210_OUTMIX_L 0x1C
	44	#define DA7210_OUTMIX_R 0x1D
	45	#define DA7210_HP_L_VOL 0x21
	46	#define DA7210_HP_R_VOL 0x22
	47	#define DA7210_HP_CFG 0x23
	48	#define DA7210_DAI_SRC_SEL 0x25
	49	#define DA7210_DAI_CFG1 0x26
	50	#define DA7210_DAI_CFG3 0x28
960b3b4b KM	51	#define DA7210_PLL_DIV1 0x29
960b3b4b KM	52	#define DA7210_PLL_DIV2 0x2A
98615454 KM	53	#define DA7210_PLL_DIV3 0x2B
98615454 KM	54	#define DA7210_PLL 0x2C
960b3b4b KM	55	#define DA7210_A_HID_UNLOCK 0x8A
	56	#define DA7210_A_TEST_UNLOCK 0x8B
	57	#define DA7210_A_PLL1 0x90
	58	#define DA7210_A_CP_MODE 0xA7
98615454 KM	59
	60	/* STARTUP1 bit fields */
	61	#define DA7210_SC_MST_EN (1 << 0)
	62
	63	/* MIC_L bit fields */
	64	#define DA7210_MICBIAS_EN (1 << 6)
	65	#define DA7210_MIC_L_EN (1 << 7)
	66
	67	/* MIC_R bit fields */
	68	#define DA7210_MIC_R_EN (1 << 7)
	69
	70	/* INMIX_L bit fields */
	71	#define DA7210_IN_L_EN (1 << 7)
	72
	73	/* INMIX_R bit fields */
	74	#define DA7210_IN_R_EN (1 << 7)
	75
98615454 KM	76	/* ADC bit fields */
	77	#define DA7210_ADC_L_EN (1 << 3)
	78	#define DA7210_ADC_R_EN (1 << 7)
	79
3a9d6202 KM	80	/* DAC/ADC HPF fields */
	81	#define DA7210_VOICE_F0_MASK (0x7 << 4)
	82	#define DA7210_VOICE_F0_25 (1 << 4)
	83	#define DA7210_VOICE_EN (1 << 7)
c2151433	84
98615454 KM	85	/* DAC_SEL bit fields */
	86	#define DA7210_DAC_L_SRC_DAI_L (4 << 0)
	87	#define DA7210_DAC_L_EN (1 << 3)
	88	#define DA7210_DAC_R_SRC_DAI_R (5 << 4)
	89	#define DA7210_DAC_R_EN (1 << 7)
	90
	91	/* OUTMIX_L bit fields */
	92	#define DA7210_OUT_L_EN (1 << 7)
	93
	94	/* OUTMIX_R bit fields */
	95	#define DA7210_OUT_R_EN (1 << 7)
	96
	97	/* HP_CFG bit fields */
	98	#define DA7210_HP_2CAP_MODE (1 << 1)
	99	#define DA7210_HP_SENSE_EN (1 << 2)
	100	#define DA7210_HP_L_EN (1 << 3)
	101	#define DA7210_HP_MODE (1 << 6)
	102	#define DA7210_HP_R_EN (1 << 7)
	103
	104	/* DAI_SRC_SEL bit fields */
	105	#define DA7210_DAI_OUT_L_SRC (6 << 0)
	106	#define DA7210_DAI_OUT_R_SRC (7 << 4)
	107
	108	/* DAI_CFG1 bit fields */
	109	#define DA7210_DAI_WORD_S16_LE (0 << 0)
	110	#define DA7210_DAI_WORD_S24_LE (2 << 0)
	111	#define DA7210_DAI_FLEN_64BIT (1 << 2)
	112	#define DA7210_DAI_MODE_MASTER (1 << 7)
	113
	114	/* DAI_CFG3 bit fields */
	115	#define DA7210_DAI_FORMAT_I2SMODE (0 << 0)
	116	#define DA7210_DAI_OE (1 << 3)
	117	#define DA7210_DAI_EN (1 << 7)
	118
	119	/PLL_DIV3 bit fields /
	120	#define DA7210_MCLK_RANGE_10_20_MHZ (1 << 4)
	121	#define DA7210_PLL_BYP (1 << 6)
	122
	123	/* PLL bit fields */
3a9d6202 KM	124	#define DA7210_PLL_FS_MASK (0xF << 0)
3a9d6202 KM	125	#define DA7210_PLL_FS_8000 (0x1 << 0)
960b3b4b	126	#define DA7210_PLL_FS_11025 (0x2 << 0)
3a9d6202 KM	127	#define DA7210_PLL_FS_12000 (0x3 << 0)
3a9d6202 KM	128	#define DA7210_PLL_FS_16000 (0x5 << 0)
960b3b4b	129	#define DA7210_PLL_FS_22050 (0x6 << 0)
3a9d6202 KM	130	#define DA7210_PLL_FS_24000 (0x7 << 0)
3a9d6202 KM	131	#define DA7210_PLL_FS_32000 (0x9 << 0)
960b3b4b	132	#define DA7210_PLL_FS_44100 (0xA << 0)
3a9d6202	133	#define DA7210_PLL_FS_48000 (0xB << 0)
960b3b4b	134	#define DA7210_PLL_FS_88200 (0xE << 0)
3a9d6202	135	#define DA7210_PLL_FS_96000 (0xF << 0)
960b3b4b	136	#define DA7210_PLL_EN (0x1 << 7)
98615454 KM	137
	138	#define DA7210_VERSION "0.0.1"
	139
a7e7cd5b KM	140	/*
	141	* Playback Volume
	142	*
	143	* max : 0x3F (+15.0 dB)
	144	* (1.5 dB step)
	145	* min : 0x11 (-54.0 dB)
	146	* mute : 0x10
	147	* reserved : 0x00 - 0x0F
	148	*
	149	* FIXME
	150	*
	151	* Reserved area are considered as "mute".
	152	* -> min = -79.5 dB
	153	*/
	154	static const DECLARE_TLV_DB_SCALE(hp_out_tlv, -7950, 150, 1);
	155
	156	static const struct snd_kcontrol_new da7210_snd_controls[] = {
	157
	158	SOC_DOUBLE_R_TLV("HeadPhone Playback Volume",
	159	DA7210_HP_L_VOL, DA7210_HP_R_VOL,
	160	0, 0x3F, 0, hp_out_tlv),
	161	};
	162
98615454 KM	163	/* Codec private data */
	164	struct da7210_priv {
	165	struct snd_soc_codec codec;
	166	};
	167
	168	static struct snd_soc_codec *da7210_codec;
	169
	170	/*
	171	* Register cache
	172	*/
	173	static const u8 da7210_reg[] = {
	174	0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0 - R7 */
	175	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8 - RF */
	176	0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
	177	0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
	178	0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
	179	0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
	180	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
	181	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
	182	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
	183	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
	184	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
	185	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
	186	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
	187	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
	188	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
	189	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
	190	0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
	191	0x00, /* R88 */
	192	};
	193
	194	/*
	195	* Read da7210 register cache
	196	*/
	197	static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
	198	{
	199	u8 *cache = codec->reg_cache;
4f6f22d7	200	BUG_ON(reg >= ARRAY_SIZE(da7210_reg));
98615454 KM	201	return cache[reg];
	202	}
	203
	204	/*
	205	* Write to the da7210 register space
	206	*/
	207	static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
	208	{
	209	u8 *cache = codec->reg_cache;
	210	u8 data[2];
	211
	212	BUG_ON(codec->volatile_register);
	213
	214	data[0] = reg & 0xff;
	215	data[1] = value & 0xff;
	216
	217	if (reg >= codec->reg_cache_size)
	218	return -EIO;
	219
	220	if (2 != codec->hw_write(codec->control_data, data, 2))
	221	return -EIO;
	222
	223	cache[reg] = value;
	224	return 0;
	225	}
	226
	227	/*
	228	* Read from the da7210 register space.
	229	*/
	230	static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
	231	{
	232	if (DA7210_STATUS == reg)
	233	return i2c_smbus_read_byte_data(codec->control_data, reg);
	234
	235	return da7210_read_reg_cache(codec, reg);
	236	}
	237
	238	static int da7210_startup(struct snd_pcm_substream *substream,
	239	struct snd_soc_dai *dai)
	240	{
	241	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
	242	struct snd_soc_codec *codec = dai->codec;
	243
	244	if (is_play) {
98615454 KM	245	/* Enable Out */
	246	snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
	247	snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
	248
	249	} else {
	250	/* Volume 7 */
	251	snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
	252	snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
	253
	254	/* Enable Mic */
	255	snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
	256	snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
	257	}
	258
	259	return 0;
	260	}
	261
	262	/*
	263	* Set PCM DAI word length.
	264	*/
	265	static int da7210_hw_params(struct snd_pcm_substream *substream,
	266	struct snd_pcm_hw_params *params,
	267	struct snd_soc_dai *dai)
	268	{
	269	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	270	struct snd_soc_device *socdev = rtd->socdev;
	271	struct snd_soc_codec *codec = socdev->card->codec;
	272	u32 dai_cfg1;
3a9d6202	273	u32 hpf_reg, hpf_mask, hpf_value;
960b3b4b	274	u32 fs, bypass;
98615454 KM	275
	276	/* set DAI source to Left and Right ADC */
	277	da7210_write(codec, DA7210_DAI_SRC_SEL,
	278	DA7210_DAI_OUT_R_SRC \| DA7210_DAI_OUT_L_SRC);
	279
	280	/* Enable DAI */
	281	da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE \| DA7210_DAI_EN);
	282
	283	dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
	284
	285	switch (params_format(params)) {
	286	case SNDRV_PCM_FORMAT_S16_LE:
	287	dai_cfg1 \|= DA7210_DAI_WORD_S16_LE;
	288	break;
	289	case SNDRV_PCM_FORMAT_S24_LE:
	290	dai_cfg1 \|= DA7210_DAI_WORD_S24_LE;
	291	break;
	292	default:
	293	return -EINVAL;
	294	}
	295
	296	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	297
3a9d6202 KM	298	hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
	299	DA7210_DAC_HPF : DA7210_ADC_HPF;
	300
98615454	301	switch (params_rate(params)) {
3a9d6202 KM	302	case 8000:
	303	fs = DA7210_PLL_FS_8000;
	304	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	305	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
960b3b4b KM	306	bypass = DA7210_PLL_BYP;
	307	break;
	308	case 11025:
	309	fs = DA7210_PLL_FS_11025;
	310	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	311	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
	312	bypass = 0;
3a9d6202 KM	313	break;
	314	case 12000:
	315	fs = DA7210_PLL_FS_12000;
	316	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	317	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
960b3b4b	318	bypass = DA7210_PLL_BYP;
3a9d6202 KM	319	break;
	320	case 16000:
	321	fs = DA7210_PLL_FS_16000;
	322	hpf_mask = DA7210_VOICE_F0_MASK \| DA7210_VOICE_EN;
	323	hpf_value = DA7210_VOICE_F0_25 \| DA7210_VOICE_EN;
960b3b4b KM	324	bypass = DA7210_PLL_BYP;
	325	break;
	326	case 22050:
	327	fs = DA7210_PLL_FS_22050;
	328	hpf_mask = DA7210_VOICE_EN;
	329	hpf_value = 0;
	330	bypass = 0;
3a9d6202 KM	331	break;
	332	case 32000:
	333	fs = DA7210_PLL_FS_32000;
	334	hpf_mask = DA7210_VOICE_EN;
	335	hpf_value = 0;
960b3b4b KM	336	bypass = DA7210_PLL_BYP;
	337	break;
	338	case 44100:
	339	fs = DA7210_PLL_FS_44100;
	340	hpf_mask = DA7210_VOICE_EN;
	341	hpf_value = 0;
	342	bypass = 0;
3a9d6202	343	break;
98615454	344	case 48000:
3a9d6202 KM	345	fs = DA7210_PLL_FS_48000;
	346	hpf_mask = DA7210_VOICE_EN;
	347	hpf_value = 0;
960b3b4b KM	348	bypass = DA7210_PLL_BYP;
	349	break;
	350	case 88200:
	351	fs = DA7210_PLL_FS_88200;
	352	hpf_mask = DA7210_VOICE_EN;
	353	hpf_value = 0;
	354	bypass = 0;
3a9d6202 KM	355	break;
	356	case 96000:
	357	fs = DA7210_PLL_FS_96000;
	358	hpf_mask = DA7210_VOICE_EN;
	359	hpf_value = 0;
960b3b4b	360	bypass = DA7210_PLL_BYP;
98615454 KM	361	break;
	362	default:
	363	return -EINVAL;
	364	}
	365
960b3b4b KM	366	/* Disable active mode */
	367	snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);
	368
3a9d6202 KM	369	snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
3a9d6202 KM	370	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
960b3b4b KM	371	snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);
	372
	373	/* Enable active mode */
	374	snd_soc_update_bits(codec, DA7210_STARTUP1,
	375	DA7210_SC_MST_EN, DA7210_SC_MST_EN);
98615454 KM	376
	377	return 0;
	378	}
	379
	380	/*
	381	* Set DAI mode and Format
	382	*/
	383	static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
	384	{
	385	struct snd_soc_codec *codec = codec_dai->codec;
	386	u32 dai_cfg1;
	387	u32 dai_cfg3;
	388
	389	dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
	390	dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
	391
	392	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	393	case SND_SOC_DAIFMT_CBM_CFM:
	394	dai_cfg1 \|= DA7210_DAI_MODE_MASTER;
	395	break;
	396	default:
	397	return -EINVAL;
	398	}
	399
	400	/* FIXME
	401	*
	402	* It support I2S only now
	403	*/
	404	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	405	case SND_SOC_DAIFMT_I2S:
	406	dai_cfg3 \|= DA7210_DAI_FORMAT_I2SMODE;
	407	break;
	408	default:
	409	return -EINVAL;
	410	}
	411
	412	/* FIXME
	413	*
	414	* It support 64bit data transmission only now
	415	*/
	416	dai_cfg1 \|= DA7210_DAI_FLEN_64BIT;
	417
	418	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	419	da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
	420
	421	return 0;
	422	}
	423
	424	#define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S24_LE)
	425
	426	/* DAI operations */
	427	static struct snd_soc_dai_ops da7210_dai_ops = {
	428	.startup = da7210_startup,
	429	.hw_params = da7210_hw_params,
	430	.set_fmt = da7210_set_dai_fmt,
	431	};
	432
	433	struct snd_soc_dai da7210_dai = {
	434	.name = "DA7210 IIS",
	435	.id = 0,
	436	/* playback capabilities */
	437	.playback = {
	438	.stream_name = "Playback",
	439	.channels_min = 1,
440	.channels_max = 2,
441	.rates = SNDRV_PCM_RATE_8000_96000,
442	.formats = DA7210_FORMATS,
443	},
444	/* capture capabilities */
445	.capture = {
446	.stream_name = "Capture",
447	.channels_min = 1,
448	.channels_max = 2,
449	.rates = SNDRV_PCM_RATE_8000_96000,
450	.formats = DA7210_FORMATS,
451	},
452	.ops = &da7210_dai_ops,
960b3b4b	453	.symmetric_rates = 1,
98615454 KM	454	};
	455	EXPORT_SYMBOL_GPL(da7210_dai);
	456
	457	/*
	458	* Initialize the DA7210 driver
	459	* register the mixer and dsp interfaces with the kernel
	460	*/
	461	static int da7210_init(struct da7210_priv *da7210)
	462	{
	463	struct snd_soc_codec *codec = &da7210->codec;
	464	int ret = 0;
	465
	466	if (da7210_codec) {
	467	dev_err(codec->dev, "Another da7210 is registered\n");
	468	return -EINVAL;
	469	}
	470
	471	mutex_init(&codec->mutex);
	472	INIT_LIST_HEAD(&codec->dapm_widgets);
	473	INIT_LIST_HEAD(&codec->dapm_paths);
	474
b2c812e2	475	snd_soc_codec_set_drvdata(codec, da7210);
98615454 KM	476	codec->name = "DA7210";
	477	codec->owner = THIS_MODULE;
	478	codec->read = da7210_read;
	479	codec->write = da7210_write;
	480	codec->dai = &da7210_dai;
	481	codec->num_dai = 1;
	482	codec->hw_write = (hw_write_t)i2c_master_send;
	483	codec->reg_cache_size = ARRAY_SIZE(da7210_reg);
	484	codec->reg_cache = kmemdup(da7210_reg,
	485	sizeof(da7210_reg), GFP_KERNEL);
	486
	487	if (!codec->reg_cache)
	488	return -ENOMEM;
	489
	490	da7210_dai.dev = codec->dev;
	491	da7210_codec = codec;
	492
	493	ret = snd_soc_register_codec(codec);
	494	if (ret) {
	495	dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
	496	goto init_err;
	497	}
	498
	499	ret = snd_soc_register_dai(&da7210_dai);
	500	if (ret) {
	501	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
085efd28	502	goto codec_err;
98615454 KM	503	}
	504
	505	/* FIXME
	506	*
	507	* This driver use fixed value here
960b3b4b KM	508	* And below settings expects MCLK = 12.288MHz
	509	*
	510	* When you select different MCLK, please check...
	511	* DA7210_PLL_DIV1 val
	512	* DA7210_PLL_DIV2 val
	513	* DA7210_PLL_DIV3 val
	514	* DA7210_PLL_DIV3 :: DA7210_MCLK_RANGExxx
98615454 KM	515	*/
98615454 KM	516
960b3b4b KM	517	/*
960b3b4b KM	518	* make sure that DA7210 use bypass mode before start up
98615454	519	*/
960b3b4b KM	520	da7210_write(codec, DA7210_STARTUP1, 0);
	521	da7210_write(codec, DA7210_PLL_DIV3,
	522	DA7210_MCLK_RANGE_10_20_MHZ \| DA7210_PLL_BYP);
98615454 KM	523
	524	/*
	525	* ADC settings
	526	*/
	527
	528	/* Enable Left & Right MIC PGA and Mic Bias */
	529	da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN \| DA7210_MICBIAS_EN);
	530	da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
	531
	532	/* Enable Left and Right input PGA */
	533	da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
	534	da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
	535
	536	/* Enable Left and Right ADC */
	537	da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN \| DA7210_ADC_R_EN);
	538
	539	/*
	540	* DAC settings
	541	*/
	542
	543	/* Enable Left and Right DAC */
	544	da7210_write(codec, DA7210_DAC_SEL,
	545	DA7210_DAC_L_SRC_DAI_L \| DA7210_DAC_L_EN \|
	546	DA7210_DAC_R_SRC_DAI_R \| DA7210_DAC_R_EN);
	547
	548	/* Enable Left and Right out PGA */
	549	da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
	550	da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
	551
	552	/* Enable Left and Right HeadPhone PGA */
	553	da7210_write(codec, DA7210_HP_CFG,
	554	DA7210_HP_2CAP_MODE \| DA7210_HP_SENSE_EN \|
	555	DA7210_HP_L_EN \| DA7210_HP_MODE \| DA7210_HP_R_EN);
	556
	557	/* Diable PLL and bypass it */
	558	da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
	559
960b3b4b KM	560	/*
	561	* If 48kHz sound came, it use bypass mode,
	562	* and when it is 44.1kHz, it use PLL.
	563	*
	564	* This time, this driver sets PLL always ON
	565	* and controls bypass/PLL mode by switching
	566	* DA7210_PLL_DIV3 :: DA7210_PLL_BYP bit.
	567	* see da7210_hw_params
	568	*/
	569	da7210_write(codec, DA7210_PLL_DIV1, 0xE5); /* MCLK = 12.288MHz */
	570	da7210_write(codec, DA7210_PLL_DIV2, 0x99);
	571	da7210_write(codec, DA7210_PLL_DIV3, 0x0A \|
98615454	572	DA7210_MCLK_RANGE_10_20_MHZ \| DA7210_PLL_BYP);
960b3b4b KM	573	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_EN, DA7210_PLL_EN);
	574
	575	/* As suggested by Dialog */
	576	da7210_write(codec, DA7210_A_HID_UNLOCK, 0x8B); /* unlock */
	577	da7210_write(codec, DA7210_A_TEST_UNLOCK, 0xB4);
	578	da7210_write(codec, DA7210_A_PLL1, 0x01);
	579	da7210_write(codec, DA7210_A_CP_MODE, 0x7C);
	580	da7210_write(codec, DA7210_A_HID_UNLOCK, 0x00); /* re-lock */
	581	da7210_write(codec, DA7210_A_TEST_UNLOCK, 0x00);
98615454 KM	582
	583	/* Activate all enabled subsystem */
	584	da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
	585
	586	return ret;
	587
085efd28 AL	588	codec_err:
085efd28 AL	589	snd_soc_unregister_codec(codec);
98615454 KM	590	init_err:
	591	kfree(codec->reg_cache);
	592	codec->reg_cache = NULL;
	593
	594	return ret;
	595
	596	}
	597
	598	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
735fe4cf MB	599	static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
735fe4cf MB	600	const struct i2c_device_id *id)
98615454 KM	601	{
	602	struct da7210_priv *da7210;
	603	struct snd_soc_codec *codec;
	604	int ret;
	605
	606	da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
	607	if (!da7210)
	608	return -ENOMEM;
	609
	610	codec = &da7210->codec;
	611	codec->dev = &i2c->dev;
	612
	613	i2c_set_clientdata(i2c, da7210);
	614	codec->control_data = i2c;
	615
	616	ret = da7210_init(da7210);
085efd28	617	if (ret < 0) {
98615454	618	pr_err("Failed to initialise da7210 audio codec\n");
085efd28 AL	619	kfree(da7210);
085efd28 AL	620	}
98615454 KM	621
	622	return ret;
	623	}
	624
735fe4cf	625	static int __devexit da7210_i2c_remove(struct i2c_client *client)
98615454 KM	626	{
	627	struct da7210_priv *da7210 = i2c_get_clientdata(client);
	628
	629	snd_soc_unregister_dai(&da7210_dai);
	630	kfree(da7210->codec.reg_cache);
	631	kfree(da7210);
	632	da7210_codec = NULL;
	633
	634	return 0;
	635	}
	636
	637	static const struct i2c_device_id da7210_i2c_id[] = {
	638	{ "da7210", 0 },
	639	{ }
	640	};
	641	MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
	642
	643	/* I2C codec control layer */
	644	static struct i2c_driver da7210_i2c_driver = {
	645	.driver = {
	646	.name = "DA7210 I2C Codec",
	647	.owner = THIS_MODULE,
	648	},
	649	.probe = da7210_i2c_probe,
	650	.remove = __devexit_p(da7210_i2c_remove),
	651	.id_table = da7210_i2c_id,
	652	};
	653	#endif
	654
	655	static int da7210_probe(struct platform_device *pdev)
	656	{
	657	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	658	struct snd_soc_codec *codec;
	659	int ret;
	660
	661	if (!da7210_codec) {
	662	dev_err(&pdev->dev, "Codec device not registered\n");
	663	return -ENODEV;
	664	}
	665
	666	socdev->card->codec = da7210_codec;
	667	codec = da7210_codec;
	668
	669	/* Register pcms */
	670	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	671	if (ret < 0)
	672	goto pcm_err;
	673
a7e7cd5b KM	674	snd_soc_add_controls(da7210_codec, da7210_snd_controls,
	675	ARRAY_SIZE(da7210_snd_controls));
	676
98615454 KM	677	dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
	678
	679	pcm_err:
	680	return ret;
	681	}
	682
	683	static int da7210_remove(struct platform_device *pdev)
	684	{
	685	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	686
	687	snd_soc_free_pcms(socdev);
	688	snd_soc_dapm_free(socdev);
	689
	690	return 0;
	691	}
	692
	693	struct snd_soc_codec_device soc_codec_dev_da7210 = {
	694	.probe = da7210_probe,
	695	.remove = da7210_remove,
	696	};
	697	EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);
	698
	699	static int __init da7210_modinit(void)
	700	{
	701	int ret = 0;
	702	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	703	ret = i2c_add_driver(&da7210_i2c_driver);
	704	#endif
	705	return ret;
	706	}
	707	module_init(da7210_modinit);
	708
	709	static void __exit da7210_exit(void)
	710	{
	711	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	712	i2c_del_driver(&da7210_i2c_driver);
	713	#endif
	714	}
	715	module_exit(da7210_exit);
	716
	717	MODULE_DESCRIPTION("ASoC DA7210 driver");
	718	MODULE_AUTHOR("David Chen, Kuninori Morimoto");
	719	MODULE_LICENSE("GPL");