[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / soc / codecs / da7210.c

/*
 * DA7210 ALSA Soc codec driver
 *
 * Copyright (c) 2009 Dialog Semiconductor
 * Written by David Chen <Dajun.chen@diasemi.com>
 *
 * Copyright (C) 2009 Renesas Solutions Corp.
 * Cleanups by Kuninori Morimoto <morimoto.kuninori@renesas.com>
 *
 * Tested on SuperH Ecovec24 board with S16/S24 LE in 48KHz using I2S
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include <sound/initval.h>
#include <asm/div64.h>

#include "da7210.h"

/* DA7210 register space */
#define DA7210_STATUS			0x02
#define DA7210_STARTUP1			0x03
#define DA7210_MIC_L			0x07
#define DA7210_MIC_R			0x08
#define DA7210_INMIX_L			0x0D
#define DA7210_INMIX_R			0x0E
#define DA7210_ADC_HPF			0x0F
#define DA7210_ADC			0x10
#define DA7210_DAC_HPF			0x14
#define DA7210_DAC_L			0x15
#define DA7210_DAC_R			0x16
#define DA7210_DAC_SEL			0x17
#define DA7210_OUTMIX_L			0x1C
#define DA7210_OUTMIX_R			0x1D
#define DA7210_HP_L_VOL			0x21
#define DA7210_HP_R_VOL			0x22
#define DA7210_HP_CFG			0x23
#define DA7210_DAI_SRC_SEL		0x25
#define DA7210_DAI_CFG1			0x26
#define DA7210_DAI_CFG3			0x28
#define DA7210_PLL_DIV3			0x2B
#define DA7210_PLL			0x2C

/* STARTUP1 bit fields */
#define DA7210_SC_MST_EN		(1 << 0)

/* MIC_L bit fields */
#define DA7210_MICBIAS_EN		(1 << 6)
#define DA7210_MIC_L_EN			(1 << 7)

/* MIC_R bit fields */
#define DA7210_MIC_R_EN			(1 << 7)

/* INMIX_L bit fields */
#define DA7210_IN_L_EN			(1 << 7)

/* INMIX_R bit fields */
#define DA7210_IN_R_EN			(1 << 7)

/* ADC_HPF bit fields */
#define DA7210_ADC_VOICE_EN		(1 << 7)

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

/* DAC_HPF fields */
#define DA7210_DAC_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_48000		(11 << 0)

#define DA7210_VERSION "0.0.1"

/* Codec private data */
struct da7210_priv {
	struct snd_soc_codec codec;
};

static struct snd_soc_codec *da7210_codec;

/*
 * Register cache
 */
static const u8 da7210_reg[] = {
	0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R0  - R7  */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08,	/* R8  - RF  */
	0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54,	/* R10 - R17 */
	0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R18 - R1F */
	0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00,	/* R20 - R27 */
	0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00,	/* R28 - R2F */
	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00,	/* R30 - R37 */
	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00,	/* R38 - R3F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R40 - R4F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R48 - R4F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R50 - R57 */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R58 - R5F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R60 - R67 */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R68 - R6F */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R70 - R77 */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00,	/* R78 - R7F */
	0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00,	/* R80 - R87 */
	0x00,						/* R88       */
};

/*
 * Read da7210 register cache
 */
static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
{
	u8 *cache = codec->reg_cache;
	BUG_ON(reg > ARRAY_SIZE(da7210_reg));
	return cache[reg];
}

/*
 * Write to the da7210 register space
 */
static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
{
	u8 *cache = codec->reg_cache;
	u8 data[2];

	BUG_ON(codec->volatile_register);

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

	if (reg >= codec->reg_cache_size)
		return -EIO;

	if (2 != codec->hw_write(codec->control_data, data, 2))
		return -EIO;

	cache[reg] = value;
	return 0;
}

/*
 * Read from the da7210 register space.
 */
static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
{
	if (DA7210_STATUS == reg)
		return i2c_smbus_read_byte_data(codec->control_data, reg);

	return da7210_read_reg_cache(codec, reg);
}

static int da7210_startup(struct snd_pcm_substream *substream,
			  struct snd_soc_dai *dai)
{
	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
	struct snd_soc_codec *codec = dai->codec;

	if (is_play) {
		/* PlayBack Volume 40 */
		snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
		snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);

		/* Enable Out */
		snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
		snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);

	} else {
		/* Volume 7 */
		snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
		snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);

		/* Enable Mic */
		snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
		snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
	}

	return 0;
}

/*
 * Set PCM DAI word length.
 */
static int da7210_hw_params(struct snd_pcm_substream *substream,
			    struct snd_pcm_hw_params *params,
			    struct snd_soc_dai *dai)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_device *socdev = rtd->socdev;
	struct snd_soc_codec *codec = socdev->card->codec;
	u32 dai_cfg1;
	u32 reg, mask;

	/* set DAI source to Left and Right ADC */
	da7210_write(codec, DA7210_DAI_SRC_SEL,
		     DA7210_DAI_OUT_R_SRC | DA7210_DAI_OUT_L_SRC);

	/* Enable DAI */
	da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE | DA7210_DAI_EN);

	dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		dai_cfg1 |= DA7210_DAI_WORD_S16_LE;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		dai_cfg1 |= DA7210_DAI_WORD_S24_LE;
		break;
	default:
		return -EINVAL;
	}

	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);

	/* FIXME
	 *
	 * It support 48K only now
	 */
	switch (params_rate(params)) {
	case 48000:
		if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
			reg  = DA7210_DAC_HPF;
			mask = DA7210_DAC_VOICE_EN;
		} else {
			reg  = DA7210_ADC_HPF;
			mask = DA7210_ADC_VOICE_EN;
		}
		break;
	default:
		return -EINVAL;
	}

	snd_soc_update_bits(codec, reg, mask, 0);

	return 0;
}

/*
 * Set DAI mode and Format
 */
static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	u32 dai_cfg1;
	u32 dai_cfg3;

	dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
	dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		dai_cfg1 |= DA7210_DAI_MODE_MASTER;
		break;
	default:
		return -EINVAL;
	}

	/* FIXME
	 *
	 * It support I2S only now
	 */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		dai_cfg3 |= DA7210_DAI_FORMAT_I2SMODE;
		break;
	default:
		return -EINVAL;
	}

	/* FIXME
	 *
	 * It support 64bit data transmission only now
	 */
	dai_cfg1 |= DA7210_DAI_FLEN_64BIT;

	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
	da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);

	return 0;
}

#define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)

/* DAI operations */
static struct snd_soc_dai_ops da7210_dai_ops = {
	.startup	= da7210_startup,
	.hw_params	= da7210_hw_params,
	.set_fmt	= da7210_set_dai_fmt,
};

struct snd_soc_dai da7210_dai = {
	.name = "DA7210 IIS",
	.id = 0,
	/* playback capabilities */
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_96000,
		.formats = DA7210_FORMATS,
	},
	/* capture capabilities */
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_96000,
		.formats = DA7210_FORMATS,
	},
	.ops = &da7210_dai_ops,
};
EXPORT_SYMBOL_GPL(da7210_dai);

/*
 * Initialize the DA7210 driver
 * register the mixer and dsp interfaces with the kernel
 */
static int da7210_init(struct da7210_priv *da7210)
{
	struct snd_soc_codec *codec = &da7210->codec;
	int ret = 0;

	if (da7210_codec) {
		dev_err(codec->dev, "Another da7210 is registered\n");
		return -EINVAL;
	}

	mutex_init(&codec->mutex);
	INIT_LIST_HEAD(&codec->dapm_widgets);
	INIT_LIST_HEAD(&codec->dapm_paths);

	codec->private_data	= da7210;
	codec->name		= "DA7210";
	codec->owner		= THIS_MODULE;
	codec->read		= da7210_read;
	codec->write		= da7210_write;
	codec->dai		= &da7210_dai;
	codec->num_dai		= 1;
	codec->hw_write		= (hw_write_t)i2c_master_send;
	codec->reg_cache_size	= ARRAY_SIZE(da7210_reg);
	codec->reg_cache	= kmemdup(da7210_reg,
					  sizeof(da7210_reg), GFP_KERNEL);

	if (!codec->reg_cache)
		return -ENOMEM;

	da7210_dai.dev = codec->dev;
	da7210_codec = codec;

	ret = snd_soc_register_codec(codec);
	if (ret) {
		dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
		goto init_err;
	}

	ret = snd_soc_register_dai(&da7210_dai);
	if (ret) {
		dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
		goto init_err;
	}

	/* FIXME
	 *
	 * This driver use fixed value here
	 */

	/*
	 * ADC settings
	 */

	/* Enable Left & Right MIC PGA and Mic Bias */
	da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN | DA7210_MICBIAS_EN);
	da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);

	/* Enable Left and Right input PGA */
	da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
	da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);

	/* Enable Left and Right ADC */
	da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN | DA7210_ADC_R_EN);

	/*
	 * DAC settings
	 */

	/* Enable Left and Right DAC */
	da7210_write(codec, DA7210_DAC_SEL,
		     DA7210_DAC_L_SRC_DAI_L | DA7210_DAC_L_EN |
		     DA7210_DAC_R_SRC_DAI_R | DA7210_DAC_R_EN);

	/* Enable Left and Right out PGA */
	da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
	da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);

	/* Enable Left and Right HeadPhone PGA */
	da7210_write(codec, DA7210_HP_CFG,
		     DA7210_HP_2CAP_MODE | DA7210_HP_SENSE_EN |
		     DA7210_HP_L_EN | DA7210_HP_MODE | DA7210_HP_R_EN);

	/* Diable PLL and bypass it */
	da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);

	/* Bypass PLL and set MCLK freq rang to 10-20MHz */
	da7210_write(codec, DA7210_PLL_DIV3,
		     DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);

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

	return ret;

init_err:
	kfree(codec->reg_cache);
	codec->reg_cache = NULL;

	return ret;

}

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
			   	      const struct i2c_device_id *id)
{
	struct da7210_priv *da7210;
	struct snd_soc_codec *codec;
	int ret;

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

	codec = &da7210->codec;
	codec->dev = &i2c->dev;

	i2c_set_clientdata(i2c, da7210);
	codec->control_data = i2c;

	ret = da7210_init(da7210);
	if (ret < 0)
		pr_err("Failed to initialise da7210 audio codec\n");

	return ret;
}

static int __devexit da7210_i2c_remove(struct i2c_client *client)
{
	struct da7210_priv *da7210 = i2c_get_clientdata(client);

	snd_soc_unregister_dai(&da7210_dai);
	kfree(da7210->codec.reg_cache);
	kfree(da7210);
	da7210_codec = NULL;

	return 0;
}

static const struct i2c_device_id da7210_i2c_id[] = {
	{ "da7210", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);

/* I2C codec control layer */
static struct i2c_driver da7210_i2c_driver = {
	.driver = {
		.name = "DA7210 I2C Codec",
		.owner = THIS_MODULE,
	},
	.probe = da7210_i2c_probe,
	.remove =  __devexit_p(da7210_i2c_remove),
	.id_table = da7210_i2c_id,
};
#endif

static int da7210_probe(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec;
	int ret;

	if (!da7210_codec) {
		dev_err(&pdev->dev, "Codec device not registered\n");
		return -ENODEV;
	}

	socdev->card->codec = da7210_codec;
	codec = da7210_codec;

	/* Register pcms */
	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	if (ret < 0)
		goto pcm_err;

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

pcm_err:
	return ret;
}

static int da7210_remove(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	snd_soc_free_pcms(socdev);
	snd_soc_dapm_free(socdev);

	return 0;
}

struct snd_soc_codec_device soc_codec_dev_da7210 = {
	.probe =	da7210_probe,
	.remove =	da7210_remove,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);

static int __init da7210_modinit(void)
{
	int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	ret = i2c_add_driver(&da7210_i2c_driver);
#endif
	return ret;
}
module_init(da7210_modinit);

static void __exit da7210_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	i2c_del_driver(&da7210_i2c_driver);
#endif
}
module_exit(da7210_exit);

MODULE_DESCRIPTION("ASoC DA7210 driver");
MODULE_AUTHOR("David Chen, Kuninori Morimoto");
MODULE_LICENSE("GPL");
Commit	Line	Data
98615454 KM	1	/*
	2	* DA7210 ALSA Soc codec driver
	3	*
	4	* Copyright (c) 2009 Dialog Semiconductor
	5	* Written by David Chen <Dajun.chen@diasemi.com>
	6	*
	7	* Copyright (C) 2009 Renesas Solutions Corp.
	8	* Cleanups by Kuninori Morimoto <morimoto.kuninori@renesas.com>
	9	*
	10	* Tested on SuperH Ecovec24 board with S16/S24 LE in 48KHz using I2S
	11	*
	12	* This program is free software; you can redistribute it and/or modify it
	13	* under the terms of the GNU General Public License as published by the
	14	* Free Software Foundation; either version 2 of the License, or (at your
	15	* option) any later version.
	16	*/
	17
	18	#include <linux/module.h>
	19	#include <linux/moduleparam.h>
	20	#include <linux/kernel.h>
	21	#include <linux/init.h>
	22	#include <linux/delay.h>
	23	#include <linux/pm.h>
	24	#include <linux/i2c.h>
	25	#include <linux/platform_device.h>
5a0e3ad6	26	#include <linux/slab.h>
98615454 KM	27	#include <sound/core.h>
	28	#include <sound/pcm.h>
	29	#include <sound/pcm_params.h>
	30	#include <sound/soc.h>
	31	#include <sound/soc-dapm.h>
	32	#include <sound/tlv.h>
	33	#include <sound/initval.h>
	34	#include <asm/div64.h>
	35
	36	#include "da7210.h"
	37
	38	/* DA7210 register space */
	39	#define DA7210_STATUS 0x02
	40	#define DA7210_STARTUP1 0x03
	41	#define DA7210_MIC_L 0x07
	42	#define DA7210_MIC_R 0x08
	43	#define DA7210_INMIX_L 0x0D
	44	#define DA7210_INMIX_R 0x0E
	45	#define DA7210_ADC_HPF 0x0F
	46	#define DA7210_ADC 0x10
	47	#define DA7210_DAC_HPF 0x14
	48	#define DA7210_DAC_L 0x15
	49	#define DA7210_DAC_R 0x16
	50	#define DA7210_DAC_SEL 0x17
	51	#define DA7210_OUTMIX_L 0x1C
	52	#define DA7210_OUTMIX_R 0x1D
	53	#define DA7210_HP_L_VOL 0x21
	54	#define DA7210_HP_R_VOL 0x22
	55	#define DA7210_HP_CFG 0x23
	56	#define DA7210_DAI_SRC_SEL 0x25
	57	#define DA7210_DAI_CFG1 0x26
	58	#define DA7210_DAI_CFG3 0x28
	59	#define DA7210_PLL_DIV3 0x2B
	60	#define DA7210_PLL 0x2C
	61
	62	/* STARTUP1 bit fields */
	63	#define DA7210_SC_MST_EN (1 << 0)
	64
	65	/* MIC_L bit fields */
	66	#define DA7210_MICBIAS_EN (1 << 6)
	67	#define DA7210_MIC_L_EN (1 << 7)
	68
	69	/* MIC_R bit fields */
	70	#define DA7210_MIC_R_EN (1 << 7)
	71
	72	/* INMIX_L bit fields */
	73	#define DA7210_IN_L_EN (1 << 7)
	74
	75	/* INMIX_R bit fields */
	76	#define DA7210_IN_R_EN (1 << 7)
	77
	78	/* ADC_HPF bit fields */
	79	#define DA7210_ADC_VOICE_EN (1 << 7)
	80
	81	/* ADC bit fields */
	82	#define DA7210_ADC_L_EN (1 << 3)
	83	#define DA7210_ADC_R_EN (1 << 7)
	84
c2151433 MB	85	/* DAC_HPF fields */
	86	#define DA7210_DAC_VOICE_EN (1 << 7)
	87
98615454 KM	88	/* DAC_SEL bit fields */
	89	#define DA7210_DAC_L_SRC_DAI_L (4 << 0)
	90	#define DA7210_DAC_L_EN (1 << 3)
	91	#define DA7210_DAC_R_SRC_DAI_R (5 << 4)
	92	#define DA7210_DAC_R_EN (1 << 7)
	93
	94	/* OUTMIX_L bit fields */
	95	#define DA7210_OUT_L_EN (1 << 7)
	96
	97	/* OUTMIX_R bit fields */
	98	#define DA7210_OUT_R_EN (1 << 7)
	99
	100	/* HP_CFG bit fields */
	101	#define DA7210_HP_2CAP_MODE (1 << 1)
	102	#define DA7210_HP_SENSE_EN (1 << 2)
	103	#define DA7210_HP_L_EN (1 << 3)
	104	#define DA7210_HP_MODE (1 << 6)
	105	#define DA7210_HP_R_EN (1 << 7)
	106
	107	/* DAI_SRC_SEL bit fields */
	108	#define DA7210_DAI_OUT_L_SRC (6 << 0)
	109	#define DA7210_DAI_OUT_R_SRC (7 << 4)
	110
	111	/* DAI_CFG1 bit fields */
	112	#define DA7210_DAI_WORD_S16_LE (0 << 0)
	113	#define DA7210_DAI_WORD_S24_LE (2 << 0)
	114	#define DA7210_DAI_FLEN_64BIT (1 << 2)
	115	#define DA7210_DAI_MODE_MASTER (1 << 7)
	116
	117	/* DAI_CFG3 bit fields */
	118	#define DA7210_DAI_FORMAT_I2SMODE (0 << 0)
	119	#define DA7210_DAI_OE (1 << 3)
	120	#define DA7210_DAI_EN (1 << 7)
	121
	122	/PLL_DIV3 bit fields /
	123	#define DA7210_MCLK_RANGE_10_20_MHZ (1 << 4)
	124	#define DA7210_PLL_BYP (1 << 6)
	125
	126	/* PLL bit fields */
	127	#define DA7210_PLL_FS_48000 (11 << 0)
	128
	129	#define DA7210_VERSION "0.0.1"
	130
	131	/* Codec private data */
	132	struct da7210_priv {
	133	struct snd_soc_codec codec;
	134	};
	135
	136	static struct snd_soc_codec *da7210_codec;
	137
	138	/*
	139	* Register cache
	140	*/
	141	static const u8 da7210_reg[] = {
	142	0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0 - R7 */
	143	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8 - RF */
	144	0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
	145	0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
	146	0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
	147	0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
	148	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
	149	0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
	150	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
	151	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
152	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
153	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
154	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
155	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
156	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
157	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
158	0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
159	0x00, /* R88 */
160	};
161
162	/*
163	* Read da7210 register cache
164	*/
165	static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
166	{
167	u8 *cache = codec->reg_cache;
168	BUG_ON(reg > ARRAY_SIZE(da7210_reg));
169	return cache[reg];
170	}
171
172	/*
173	* Write to the da7210 register space
174	*/
175	static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
176	{
177	u8 *cache = codec->reg_cache;
178	u8 data[2];
179
180	BUG_ON(codec->volatile_register);
181
182	data[0] = reg & 0xff;
183	data[1] = value & 0xff;
184
185	if (reg >= codec->reg_cache_size)
186	return -EIO;
187
188	if (2 != codec->hw_write(codec->control_data, data, 2))
189	return -EIO;
190
191	cache[reg] = value;
192	return 0;
193	}
194
195	/*
196	* Read from the da7210 register space.
197	*/
198	static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
199	{
200	if (DA7210_STATUS == reg)
201	return i2c_smbus_read_byte_data(codec->control_data, reg);
202
203	return da7210_read_reg_cache(codec, reg);
204	}
205
206	static int da7210_startup(struct snd_pcm_substream *substream,
207	struct snd_soc_dai *dai)
208	{
209	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
210	struct snd_soc_codec *codec = dai->codec;
211
212	if (is_play) {
213	/* PlayBack Volume 40 */
214	snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
215	snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);
216
217	/* Enable Out */
218	snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
219	snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
220
221	} else {
222	/* Volume 7 */
223	snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
224	snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
225
226	/* Enable Mic */
227	snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
228	snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
229	}
230
231	return 0;
232	}
233
234	/*
235	* Set PCM DAI word length.
236	*/
237	static int da7210_hw_params(struct snd_pcm_substream *substream,
238	struct snd_pcm_hw_params *params,
239	struct snd_soc_dai *dai)
240	{
241	struct snd_soc_pcm_runtime *rtd = substream->private_data;
242	struct snd_soc_device *socdev = rtd->socdev;
243	struct snd_soc_codec *codec = socdev->card->codec;
244	u32 dai_cfg1;
245	u32 reg, mask;
246
247	/* set DAI source to Left and Right ADC */
248	da7210_write(codec, DA7210_DAI_SRC_SEL,
249	DA7210_DAI_OUT_R_SRC \| DA7210_DAI_OUT_L_SRC);
250
251	/* Enable DAI */
252	da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE \| DA7210_DAI_EN);
253
254	dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
255
256	switch (params_format(params)) {
257	case SNDRV_PCM_FORMAT_S16_LE:
258	dai_cfg1 \|= DA7210_DAI_WORD_S16_LE;
259	break;
260	case SNDRV_PCM_FORMAT_S24_LE:
261	dai_cfg1 \|= DA7210_DAI_WORD_S24_LE;
262	break;
263	default:
264	return -EINVAL;
265	}
266
267	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
268
269	/* FIXME
270	*
271	* It support 48K only now
272	*/
273	switch (params_rate(params)) {
274	case 48000:
275	if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
276	reg = DA7210_DAC_HPF;
277	mask = DA7210_DAC_VOICE_EN;
278	} else {
279	reg = DA7210_ADC_HPF;
280	mask = DA7210_ADC_VOICE_EN;
281	}
282	break;
283	default:
284	return -EINVAL;
285	}
286
287	snd_soc_update_bits(codec, reg, mask, 0);
288
289	return 0;
290	}
291
292	/*
293	* Set DAI mode and Format
294	*/
295	static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
296	{
297	struct snd_soc_codec *codec = codec_dai->codec;
298	u32 dai_cfg1;
299	u32 dai_cfg3;
300
301	dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
302	dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
303
304	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
305	case SND_SOC_DAIFMT_CBM_CFM:
306	dai_cfg1 \|= DA7210_DAI_MODE_MASTER;
307	break;
308	default:
309	return -EINVAL;
310	}
311
312	/* FIXME
313	*
314	* It support I2S only now
315	*/
316	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
317	case SND_SOC_DAIFMT_I2S:
318	dai_cfg3 \|= DA7210_DAI_FORMAT_I2SMODE;
319	break;
320	default:
321	return -EINVAL;
322	}
323
324	/* FIXME
325	*
326	* It support 64bit data transmission only now
327	*/
328	dai_cfg1 \|= DA7210_DAI_FLEN_64BIT;
329
330	da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
331	da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
332
333	return 0;
334	}
335
336	#define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S24_LE)
337
338	/* DAI operations */
339	static struct snd_soc_dai_ops da7210_dai_ops = {
340	.startup = da7210_startup,
341	.hw_params = da7210_hw_params,
342	.set_fmt = da7210_set_dai_fmt,
343	};
344
345	struct snd_soc_dai da7210_dai = {
346	.name = "DA7210 IIS",
347	.id = 0,
348	/* playback capabilities */
349	.playback = {
350	.stream_name = "Playback",
351	.channels_min = 1,
352	.channels_max = 2,
353	.rates = SNDRV_PCM_RATE_8000_96000,
354	.formats = DA7210_FORMATS,
355	},
356	/* capture capabilities */
357	.capture = {
358	.stream_name = "Capture",
359	.channels_min = 1,
360	.channels_max = 2,
361	.rates = SNDRV_PCM_RATE_8000_96000,
362	.formats = DA7210_FORMATS,
363	},
364	.ops = &da7210_dai_ops,
365	};
366	EXPORT_SYMBOL_GPL(da7210_dai);
367
368	/*
369	* Initialize the DA7210 driver
370	* register the mixer and dsp interfaces with the kernel
371	*/
372	static int da7210_init(struct da7210_priv *da7210)
373	{
374	struct snd_soc_codec *codec = &da7210->codec;
375	int ret = 0;
376
377	if (da7210_codec) {
378	dev_err(codec->dev, "Another da7210 is registered\n");
379	return -EINVAL;
380	}
381
382	mutex_init(&codec->mutex);
383	INIT_LIST_HEAD(&codec->dapm_widgets);
384	INIT_LIST_HEAD(&codec->dapm_paths);
385
386	codec->private_data = da7210;
387	codec->name = "DA7210";
388	codec->owner = THIS_MODULE;
389	codec->read = da7210_read;
390	codec->write = da7210_write;
391	codec->dai = &da7210_dai;
392	codec->num_dai = 1;
393	codec->hw_write = (hw_write_t)i2c_master_send;
394	codec->reg_cache_size = ARRAY_SIZE(da7210_reg);
395	codec->reg_cache = kmemdup(da7210_reg,
396	sizeof(da7210_reg), GFP_KERNEL);
397
398	if (!codec->reg_cache)
399	return -ENOMEM;
400
401	da7210_dai.dev = codec->dev;
402	da7210_codec = codec;
403
404	ret = snd_soc_register_codec(codec);
405	if (ret) {
406	dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
407	goto init_err;
408	}
409
410	ret = snd_soc_register_dai(&da7210_dai);
411	if (ret) {
412	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
413	goto init_err;
414	}
415
416	/* FIXME
417	*
418	* This driver use fixed value here
419	*/
420
421	/*
422	* ADC settings
423	*/
424
425	/* Enable Left & Right MIC PGA and Mic Bias */
426	da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN \| DA7210_MICBIAS_EN);
427	da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
428
429	/* Enable Left and Right input PGA */
430	da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
431	da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
432
433	/* Enable Left and Right ADC */
434	da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN \| DA7210_ADC_R_EN);
435
436	/*
437	* DAC settings
438	*/
439
440	/* Enable Left and Right DAC */
441	da7210_write(codec, DA7210_DAC_SEL,
442	DA7210_DAC_L_SRC_DAI_L \| DA7210_DAC_L_EN \|
443	DA7210_DAC_R_SRC_DAI_R \| DA7210_DAC_R_EN);
444
445	/* Enable Left and Right out PGA */
446	da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
447	da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
448
449	/* Enable Left and Right HeadPhone PGA */
450	da7210_write(codec, DA7210_HP_CFG,
451	DA7210_HP_2CAP_MODE \| DA7210_HP_SENSE_EN \|
452	DA7210_HP_L_EN \| DA7210_HP_MODE \| DA7210_HP_R_EN);
453
454	/* Diable PLL and bypass it */
455	da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
456
457	/* Bypass PLL and set MCLK freq rang to 10-20MHz */
458	da7210_write(codec, DA7210_PLL_DIV3,
459	DA7210_MCLK_RANGE_10_20_MHZ \| DA7210_PLL_BYP);
460
461	/* Activate all enabled subsystem */
462	da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
463
464	return ret;
465
466	init_err:
467	kfree(codec->reg_cache);
468	codec->reg_cache = NULL;
469
470	return ret;
471
472	}
473
474	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
735fe4cf MB	475	static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
735fe4cf MB	476	const struct i2c_device_id *id)
98615454 KM	477	{
	478	struct da7210_priv *da7210;
	479	struct snd_soc_codec *codec;
	480	int ret;
	481
	482	da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
	483	if (!da7210)
	484	return -ENOMEM;
	485
	486	codec = &da7210->codec;
	487	codec->dev = &i2c->dev;
	488
	489	i2c_set_clientdata(i2c, da7210);
	490	codec->control_data = i2c;
	491
	492	ret = da7210_init(da7210);
	493	if (ret < 0)
	494	pr_err("Failed to initialise da7210 audio codec\n");
	495
	496	return ret;
	497	}
	498
735fe4cf	499	static int __devexit da7210_i2c_remove(struct i2c_client *client)
98615454 KM	500	{
	501	struct da7210_priv *da7210 = i2c_get_clientdata(client);
	502
	503	snd_soc_unregister_dai(&da7210_dai);
	504	kfree(da7210->codec.reg_cache);
	505	kfree(da7210);
	506	da7210_codec = NULL;
	507
	508	return 0;
	509	}
	510
	511	static const struct i2c_device_id da7210_i2c_id[] = {
	512	{ "da7210", 0 },
	513	{ }
	514	};
	515	MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
	516
	517	/* I2C codec control layer */
	518	static struct i2c_driver da7210_i2c_driver = {
	519	.driver = {
	520	.name = "DA7210 I2C Codec",
	521	.owner = THIS_MODULE,
	522	},
	523	.probe = da7210_i2c_probe,
	524	.remove = __devexit_p(da7210_i2c_remove),
	525	.id_table = da7210_i2c_id,
	526	};
	527	#endif
	528
	529	static int da7210_probe(struct platform_device *pdev)
	530	{
	531	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	532	struct snd_soc_codec *codec;
	533	int ret;
	534
	535	if (!da7210_codec) {
	536	dev_err(&pdev->dev, "Codec device not registered\n");
	537	return -ENODEV;
	538	}
	539
	540	socdev->card->codec = da7210_codec;
	541	codec = da7210_codec;
	542
	543	/* Register pcms */
	544	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	545	if (ret < 0)
	546	goto pcm_err;
	547
	548	dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
	549
	550	pcm_err:
	551	return ret;
	552	}
	553
	554	static int da7210_remove(struct platform_device *pdev)
	555	{
	556	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	557
	558	snd_soc_free_pcms(socdev);
	559	snd_soc_dapm_free(socdev);
	560
	561	return 0;
	562	}
	563
564	struct snd_soc_codec_device soc_codec_dev_da7210 = {
565	.probe = da7210_probe,
566	.remove = da7210_remove,
567	};
568	EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);
569
570	static int __init da7210_modinit(void)
571	{
572	int ret = 0;
573	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
574	ret = i2c_add_driver(&da7210_i2c_driver);
575	#endif
576	return ret;
577	}
578	module_init(da7210_modinit);
579
580	static void __exit da7210_exit(void)
581	{
582	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
583	i2c_del_driver(&da7210_i2c_driver);
584	#endif
585	}
586	module_exit(da7210_exit);
587
588	MODULE_DESCRIPTION("ASoC DA7210 driver");
589	MODULE_AUTHOR("David Chen, Kuninori Morimoto");
590	MODULE_LICENSE("GPL");