sound/soc/codecs/ak4613.c - LeafOS-Devices/android_kernel_samsung_universal7904 - Gitiles

 /*
  * ak4613.c  --  Asahi Kasei ALSA Soc Audio driver
  *
  * Copyright (C) 2015 Renesas Electronics Corporation
  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
  *
  * Based on ak4642.c by Kuninori Morimoto
  * Based on wm8731.c by Richard Purdie
  * Based on ak4535.c by Richard Purdie
  * Based on wm8753.c by Liam Girdwood
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */

 #include <linux/clk.h>
 #include <linux/i2c.h>
 #include <linux/slab.h>
 #include <linux/of_device.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <sound/soc.h>
 #include <sound/pcm_params.h>
 #include <sound/tlv.h>

 #define PW_MGMT1	0x00 /* Power Management 1 */
 #define PW_MGMT2	0x01 /* Power Management 2 */
 #define PW_MGMT3	0x02 /* Power Management 3 */
 #define CTRL1		0x03 /* Control 1 */
 #define CTRL2		0x04 /* Control 2 */
 #define DEMP1		0x05 /* De-emphasis1 */
 #define DEMP2		0x06 /* De-emphasis2 */
 #define OFD		0x07 /* Overflow Detect */
 #define ZRD		0x08 /* Zero Detect */
 #define ICTRL		0x09 /* Input Control */
 #define OCTRL		0x0a /* Output Control */
 #define LOUT1		0x0b /* LOUT1 Volume Control */
 #define ROUT1		0x0c /* ROUT1 Volume Control */
 #define LOUT2		0x0d /* LOUT2 Volume Control */
 #define ROUT2		0x0e /* ROUT2 Volume Control */
 #define LOUT3		0x0f /* LOUT3 Volume Control */
 #define ROUT3		0x10 /* ROUT3 Volume Control */
 #define LOUT4		0x11 /* LOUT4 Volume Control */
 #define ROUT4		0x12 /* ROUT4 Volume Control */
 #define LOUT5		0x13 /* LOUT5 Volume Control */
 #define ROUT5		0x14 /* ROUT5 Volume Control */
 #define LOUT6		0x15 /* LOUT6 Volume Control */
 #define ROUT6		0x16 /* ROUT6 Volume Control */

 /* PW_MGMT1 */
 #define RSTN		BIT(0)
 #define PMDAC		BIT(1)
 #define PMADC		BIT(2)
 #define PMVR		BIT(3)

 /* PW_MGMT2 */
 #define PMAD_ALL	0x7

 /* PW_MGMT3 */
 #define PMDA_ALL	0x3f

 /* CTRL1 */
 #define DIF0		BIT(3)
 #define DIF1		BIT(4)
 #define DIF2		BIT(5)
 #define TDM0		BIT(6)
 #define TDM1		BIT(7)
 #define NO_FMT		(0xff)
 #define FMT_MASK	(0xf8)

 /* CTRL2 */
 #define DFS_NORMAL_SPEED	(0 << 2)
 #define DFS_DOUBLE_SPEED	(1 << 2)
 #define DFS_QUAD_SPEED		(2 << 2)

 struct ak4613_priv {
 	struct mutex lock;

 	unsigned int fmt;
 	u8 fmt_ctrl;
 	int cnt;
 };

 struct ak4613_formats {
 	unsigned int width;
 	unsigned int fmt;
 };

 struct ak4613_interface {
 	struct ak4613_formats capture;
 	struct ak4613_formats playback;
 };

 /*
  * Playback Volume
  *
  * max : 0x00 : 0 dB
  *       ( 0.5 dB step )
  * min : 0xFE : -127.0 dB
  * mute: 0xFF
  */
 static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);

 static const struct snd_kcontrol_new ak4613_snd_controls[] = {
 	SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
 			 0, 0xFF, 1, out_tlv),
 	SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
 			 0, 0xFF, 1, out_tlv),
 	SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
 			 0, 0xFF, 1, out_tlv),
 	SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
 			 0, 0xFF, 1, out_tlv),
 	SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
 			 0, 0xFF, 1, out_tlv),
 	SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
 			 0, 0xFF, 1, out_tlv),
 };

 static const struct reg_default ak4613_reg[] = {
 	{ 0x0,  0x0f }, { 0x1,  0x07 }, { 0x2,  0x3f }, { 0x3,  0x20 },
 	{ 0x4,  0x20 }, { 0x5,  0x55 }, { 0x6,  0x05 }, { 0x7,  0x07 },
 	{ 0x8,  0x0f }, { 0x9,  0x07 }, { 0xa,  0x3f }, { 0xb,  0x00 },
 	{ 0xc,  0x00 }, { 0xd,  0x00 }, { 0xe,  0x00 }, { 0xf,  0x00 },
 	{ 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
 	{ 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
 };

 #define AUDIO_IFACE_IDX_TO_VAL(i) (i << 3)
 #define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
 static const struct ak4613_interface ak4613_iface[] = {
 	/* capture */				/* playback */
 	[0] = {	AUDIO_IFACE(24, LEFT_J),	AUDIO_IFACE(16, RIGHT_J) },
 	[1] = {	AUDIO_IFACE(24, LEFT_J),	AUDIO_IFACE(20, RIGHT_J) },
 	[2] = {	AUDIO_IFACE(24, LEFT_J),	AUDIO_IFACE(24, RIGHT_J) },
 	[3] = {	AUDIO_IFACE(24, LEFT_J),	AUDIO_IFACE(24, LEFT_J) },
 	[4] = {	AUDIO_IFACE(24, I2S),		AUDIO_IFACE(24, I2S) },
 };

 static const struct regmap_config ak4613_regmap_cfg = {
 	.reg_bits		= 8,
 	.val_bits		= 8,
 	.max_register		= 0x16,
 	.reg_defaults		= ak4613_reg,
 	.num_reg_defaults	= ARRAY_SIZE(ak4613_reg),
 	.cache_type		= REGCACHE_RBTREE,
 };

 static const struct of_device_id ak4613_of_match[] = {
 	{ .compatible = "asahi-kasei,ak4613",	.data = &ak4613_regmap_cfg },
 	{},
 };
 MODULE_DEVICE_TABLE(of, ak4613_of_match);

 static const struct i2c_device_id ak4613_i2c_id[] = {
 	{ "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);

 static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {

 	/* Outputs */
 	SND_SOC_DAPM_OUTPUT("LOUT1"),
 	SND_SOC_DAPM_OUTPUT("LOUT2"),
 	SND_SOC_DAPM_OUTPUT("LOUT3"),
 	SND_SOC_DAPM_OUTPUT("LOUT4"),
 	SND_SOC_DAPM_OUTPUT("LOUT5"),
 	SND_SOC_DAPM_OUTPUT("LOUT6"),

 	SND_SOC_DAPM_OUTPUT("ROUT1"),
 	SND_SOC_DAPM_OUTPUT("ROUT2"),
 	SND_SOC_DAPM_OUTPUT("ROUT3"),
 	SND_SOC_DAPM_OUTPUT("ROUT4"),
 	SND_SOC_DAPM_OUTPUT("ROUT5"),
 	SND_SOC_DAPM_OUTPUT("ROUT6"),

 	/* Inputs */
 	SND_SOC_DAPM_INPUT("LIN1"),
 	SND_SOC_DAPM_INPUT("LIN2"),

 	SND_SOC_DAPM_INPUT("RIN1"),
 	SND_SOC_DAPM_INPUT("RIN2"),

 	/* DAC */
 	SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
 	SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
 	SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
 	SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
 	SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
 	SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),

 	/* ADC */
 	SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
 	SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
 };

 static const struct snd_soc_dapm_route ak4613_intercon[] = {
 	{"LOUT1", NULL, "DAC1"},
 	{"LOUT2", NULL, "DAC2"},
 	{"LOUT3", NULL, "DAC3"},
 	{"LOUT4", NULL, "DAC4"},
 	{"LOUT5", NULL, "DAC5"},
 	{"LOUT6", NULL, "DAC6"},

 	{"ROUT1", NULL, "DAC1"},
 	{"ROUT2", NULL, "DAC2"},
 	{"ROUT3", NULL, "DAC3"},
 	{"ROUT4", NULL, "DAC4"},
 	{"ROUT5", NULL, "DAC5"},
 	{"ROUT6", NULL, "DAC6"},

 	{"DAC1", NULL, "Playback"},
 	{"DAC2", NULL, "Playback"},
 	{"DAC3", NULL, "Playback"},
 	{"DAC4", NULL, "Playback"},
 	{"DAC5", NULL, "Playback"},
 	{"DAC6", NULL, "Playback"},

 	{"Capture", NULL, "ADC1"},
 	{"Capture", NULL, "ADC2"},

 	{"ADC1", NULL, "LIN1"},
 	{"ADC2", NULL, "LIN2"},

 	{"ADC1", NULL, "RIN1"},
 	{"ADC2", NULL, "RIN2"},
 };

 static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
 			       struct snd_soc_dai *dai)
 {
 	struct snd_soc_codec *codec = dai->codec;
 	struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
 	struct device *dev = codec->dev;

 	mutex_lock(&priv->lock);
 	priv->cnt--;
 	if (priv->cnt < 0) {
 		dev_err(dev, "unexpected counter error\n");
 		priv->cnt = 0;
 	}
 	if (!priv->cnt)
 		priv->fmt_ctrl = NO_FMT;
 	mutex_unlock(&priv->lock);
 }

 static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 {
 	struct snd_soc_codec *codec = dai->codec;
 	struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);

 	fmt &= SND_SOC_DAIFMT_FORMAT_MASK;

 	switch (fmt) {
 	case SND_SOC_DAIFMT_RIGHT_J:
 	case SND_SOC_DAIFMT_LEFT_J:
 	case SND_SOC_DAIFMT_I2S:
 		priv->fmt = fmt;

 		break;
 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
 				struct snd_pcm_hw_params *params,
 				struct snd_soc_dai *dai)
 {
 	struct snd_soc_codec *codec = dai->codec;
 	struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
 	const struct ak4613_formats *fmts;
 	struct device *dev = codec->dev;
 	unsigned int width = params_width(params);
 	unsigned int fmt = priv->fmt;
 	unsigned int rate;
 	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 	int i, ret;
 	u8 fmt_ctrl, ctrl2;

 	rate = params_rate(params);
 	switch (rate) {
 	case 32000:
 	case 44100:
 	case 48000:
 		ctrl2 = DFS_NORMAL_SPEED;
 		break;
 	case 88200:
 	case 96000:
 		ctrl2 = DFS_DOUBLE_SPEED;
 		break;
 	case 176400:
 	case 192000:
 		ctrl2 = DFS_QUAD_SPEED;
 		break;
 	default:
 		return -EINVAL;
 	}

 	/*
 	 * FIXME
 	 *
 	 * It doesn't support TDM at this point
 	 */
 	fmt_ctrl = NO_FMT;
 	for (i = 0; i < ARRAY_SIZE(ak4613_iface); i++) {
 		fmts = (is_play) ?	&ak4613_iface[i].playback :
 					&ak4613_iface[i].capture;

 		if (fmts->fmt != fmt)
 			continue;

 		if (fmt == SND_SOC_DAIFMT_RIGHT_J) {
 			if (fmts->width != width)
 				continue;
 		} else {
 			if (fmts->width < width)
 				continue;
 		}

 		fmt_ctrl = AUDIO_IFACE_IDX_TO_VAL(i);
 		break;
 	}

 	ret = -EINVAL;
 	if (fmt_ctrl == NO_FMT)
 		goto hw_params_end;

 	mutex_lock(&priv->lock);
 	if ((priv->fmt_ctrl == NO_FMT) ||
 	    (priv->fmt_ctrl == fmt_ctrl)) {
 		priv->fmt_ctrl = fmt_ctrl;
 		priv->cnt++;
 		ret = 0;
 	}
 	mutex_unlock(&priv->lock);

 	if (ret < 0)
 		goto hw_params_end;

 	snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
 	snd_soc_write(codec, CTRL2, ctrl2);

 hw_params_end:
 	if (ret < 0)
 		dev_warn(dev, "unsupported data width/format combination\n");

 	return ret;
 }

 static int ak4613_set_bias_level(struct snd_soc_codec *codec,
 				 enum snd_soc_bias_level level)
 {
 	u8 mgmt1 = 0;

 	switch (level) {
 	case SND_SOC_BIAS_ON:
 		mgmt1 |= RSTN;
 		/* fall through */
 	case SND_SOC_BIAS_PREPARE:
 		mgmt1 |= PMADC | PMDAC;
 		/* fall through */
 	case SND_SOC_BIAS_STANDBY:
 		mgmt1 |= PMVR;
 		/* fall through */
 	case SND_SOC_BIAS_OFF:
 	default:
 		break;
 	}

 	snd_soc_write(codec, PW_MGMT1, mgmt1);

 	return 0;
 }

 static const struct snd_soc_dai_ops ak4613_dai_ops = {
 	.shutdown	= ak4613_dai_shutdown,
 	.set_fmt	= ak4613_dai_set_fmt,
 	.hw_params	= ak4613_dai_hw_params,
 };

 #define AK4613_PCM_RATE		(SNDRV_PCM_RATE_32000  |\
 				 SNDRV_PCM_RATE_44100  |\
 				 SNDRV_PCM_RATE_48000  |\
 				 SNDRV_PCM_RATE_64000  |\
 				 SNDRV_PCM_RATE_88200  |\
 				 SNDRV_PCM_RATE_96000  |\
 				 SNDRV_PCM_RATE_176400 |\
 				 SNDRV_PCM_RATE_192000)
 #define AK4613_PCM_FMTBIT	(SNDRV_PCM_FMTBIT_S16_LE |\
 				 SNDRV_PCM_FMTBIT_S24_LE)

 static struct snd_soc_dai_driver ak4613_dai = {
 	.name = "ak4613-hifi",
 	.playback = {
 		.stream_name	= "Playback",
 		.channels_min	= 2,
 		.channels_max	= 2,
 		.rates		= AK4613_PCM_RATE,
 		.formats	= AK4613_PCM_FMTBIT,
 	},
 	.capture = {
 		.stream_name	= "Capture",
 		.channels_min	= 2,
 		.channels_max	= 2,
 		.rates		= AK4613_PCM_RATE,
 		.formats	= AK4613_PCM_FMTBIT,
 	},
 	.ops = &ak4613_dai_ops,
 	.symmetric_rates = 1,
 };

 static int ak4613_resume(struct snd_soc_codec *codec)
 {
 	struct regmap *regmap = dev_get_regmap(codec->dev, NULL);

 	regcache_mark_dirty(regmap);
 	return regcache_sync(regmap);
 }

 static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
 	.resume			= ak4613_resume,
 	.set_bias_level		= ak4613_set_bias_level,
 	.controls		= ak4613_snd_controls,
 	.num_controls		= ARRAY_SIZE(ak4613_snd_controls),
 	.dapm_widgets		= ak4613_dapm_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(ak4613_dapm_widgets),
 	.dapm_routes		= ak4613_intercon,
 	.num_dapm_routes	= ARRAY_SIZE(ak4613_intercon),
 };

 static int ak4613_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {
 	struct device *dev = &i2c->dev;
 	struct device_node *np = dev->of_node;
 	const struct regmap_config *regmap_cfg;
 	struct regmap *regmap;
 	struct ak4613_priv *priv;

 	regmap_cfg = NULL;
 	if (np) {
 		const struct of_device_id *of_id;

 		of_id = of_match_device(ak4613_of_match, dev);
 		if (of_id)
 			regmap_cfg = of_id->data;
 	} else {
 		regmap_cfg = (const struct regmap_config *)id->driver_data;
 	}

 	if (!regmap_cfg)
 		return -EINVAL;

 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;

 	priv->fmt_ctrl		= NO_FMT;
 	priv->cnt		= 0;

 	mutex_init(&priv->lock);

 	i2c_set_clientdata(i2c, priv);

 	regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);

 	return snd_soc_register_codec(dev, &soc_codec_dev_ak4613,
 				      &ak4613_dai, 1);
 }

 static int ak4613_i2c_remove(struct i2c_client *client)
 {
 	snd_soc_unregister_codec(&client->dev);
 	return 0;
 }

 static struct i2c_driver ak4613_i2c_driver = {
 	.driver = {
 		.name = "ak4613-codec",
 		.owner = THIS_MODULE,
 		.of_match_table = ak4613_of_match,
 	},
 	.probe		= ak4613_i2c_probe,
 	.remove		= ak4613_i2c_remove,
 	.id_table	= ak4613_i2c_id,
 };

 module_i2c_driver(ak4613_i2c_driver);

 MODULE_DESCRIPTION("Soc AK4613 driver");
 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 MODULE_LICENSE("GPL v2");
	/*
	* ak4613.c -- Asahi Kasei ALSA Soc Audio driver
	*
	* Copyright (C) 2015 Renesas Electronics Corporation
	* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
	*
	* Based on ak4642.c by Kuninori Morimoto
	* Based on wm8731.c by Richard Purdie
	* Based on ak4535.c by Richard Purdie
	* Based on wm8753.c by Liam Girdwood
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*/

	#include <linux/clk.h>
	#include <linux/i2c.h>
	#include <linux/slab.h>
	#include <linux/of_device.h>
	#include <linux/module.h>
	#include <linux/regmap.h>
	#include <sound/soc.h>
	#include <sound/pcm_params.h>
	#include <sound/tlv.h>

	#define PW_MGMT1 0x00 /* Power Management 1 */
	#define PW_MGMT2 0x01 /* Power Management 2 */
	#define PW_MGMT3 0x02 /* Power Management 3 */
	#define CTRL1 0x03 /* Control 1 */
	#define CTRL2 0x04 /* Control 2 */
	#define DEMP1 0x05 /* De-emphasis1 */
	#define DEMP2 0x06 /* De-emphasis2 */
	#define OFD 0x07 /* Overflow Detect */
	#define ZRD 0x08 /* Zero Detect */
	#define ICTRL 0x09 /* Input Control */
	#define OCTRL 0x0a /* Output Control */
	#define LOUT1 0x0b /* LOUT1 Volume Control */
	#define ROUT1 0x0c /* ROUT1 Volume Control */
	#define LOUT2 0x0d /* LOUT2 Volume Control */
	#define ROUT2 0x0e /* ROUT2 Volume Control */
	#define LOUT3 0x0f /* LOUT3 Volume Control */
	#define ROUT3 0x10 /* ROUT3 Volume Control */
	#define LOUT4 0x11 /* LOUT4 Volume Control */
	#define ROUT4 0x12 /* ROUT4 Volume Control */
	#define LOUT5 0x13 /* LOUT5 Volume Control */
	#define ROUT5 0x14 /* ROUT5 Volume Control */
	#define LOUT6 0x15 /* LOUT6 Volume Control */
	#define ROUT6 0x16 /* ROUT6 Volume Control */

	/* PW_MGMT1 */
	#define RSTN BIT(0)
	#define PMDAC BIT(1)
	#define PMADC BIT(2)
	#define PMVR BIT(3)

	/* PW_MGMT2 */
	#define PMAD_ALL 0x7

	/* PW_MGMT3 */
	#define PMDA_ALL 0x3f

	/* CTRL1 */
	#define DIF0 BIT(3)
	#define DIF1 BIT(4)
	#define DIF2 BIT(5)
	#define TDM0 BIT(6)
	#define TDM1 BIT(7)
	#define NO_FMT (0xff)
	#define FMT_MASK (0xf8)

	/* CTRL2 */
	#define DFS_NORMAL_SPEED (0 << 2)
	#define DFS_DOUBLE_SPEED (1 << 2)
	#define DFS_QUAD_SPEED (2 << 2)

	struct ak4613_priv {
	struct mutex lock;

	unsigned int fmt;
	u8 fmt_ctrl;
	int cnt;
	};

	struct ak4613_formats {
	unsigned int width;
	unsigned int fmt;
	};

	struct ak4613_interface {
	struct ak4613_formats capture;
	struct ak4613_formats playback;
	};

	/*
	* Playback Volume
	*
	* max : 0x00 : 0 dB
	* ( 0.5 dB step )
	* min : 0xFE : -127.0 dB
	* mute: 0xFF
	*/
	static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);

	static const struct snd_kcontrol_new ak4613_snd_controls[] = {
	SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
	0, 0xFF, 1, out_tlv),
	SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
	0, 0xFF, 1, out_tlv),
	SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
	0, 0xFF, 1, out_tlv),
	SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
	0, 0xFF, 1, out_tlv),
	SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
	0, 0xFF, 1, out_tlv),
	SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
	0, 0xFF, 1, out_tlv),
	};

	static const struct reg_default ak4613_reg[] = {
	{ 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
	{ 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
	{ 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
	{ 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
	{ 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
	{ 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
	};

	#define AUDIO_IFACE_IDX_TO_VAL(i) (i << 3)
	#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
	static const struct ak4613_interface ak4613_iface[] = {
	/* capture / / playback */
	[0] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(16, RIGHT_J) },
	[1] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(20, RIGHT_J) },
	[2] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, RIGHT_J) },
	[3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) },
	[4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) },
	};

	static const struct regmap_config ak4613_regmap_cfg = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = 0x16,
	.reg_defaults = ak4613_reg,
	.num_reg_defaults = ARRAY_SIZE(ak4613_reg),
	.cache_type = REGCACHE_RBTREE,
	};

	static const struct of_device_id ak4613_of_match[] = {
	{ .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg },
	{},
	};
	MODULE_DEVICE_TABLE(of, ak4613_of_match);

	static const struct i2c_device_id ak4613_i2c_id[] = {
	{ "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
	{ }
	};
	MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);

	static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {

	/* Outputs */
	SND_SOC_DAPM_OUTPUT("LOUT1"),
	SND_SOC_DAPM_OUTPUT("LOUT2"),
	SND_SOC_DAPM_OUTPUT("LOUT3"),
	SND_SOC_DAPM_OUTPUT("LOUT4"),
	SND_SOC_DAPM_OUTPUT("LOUT5"),
	SND_SOC_DAPM_OUTPUT("LOUT6"),

	SND_SOC_DAPM_OUTPUT("ROUT1"),
	SND_SOC_DAPM_OUTPUT("ROUT2"),
	SND_SOC_DAPM_OUTPUT("ROUT3"),
	SND_SOC_DAPM_OUTPUT("ROUT4"),
	SND_SOC_DAPM_OUTPUT("ROUT5"),
	SND_SOC_DAPM_OUTPUT("ROUT6"),

	/* Inputs */
	SND_SOC_DAPM_INPUT("LIN1"),
	SND_SOC_DAPM_INPUT("LIN2"),

	SND_SOC_DAPM_INPUT("RIN1"),
	SND_SOC_DAPM_INPUT("RIN2"),

	/* DAC */
	SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
	SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
	SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
	SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
	SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
	SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),

	/* ADC */
	SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
	SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
	};

	static const struct snd_soc_dapm_route ak4613_intercon[] = {
	{"LOUT1", NULL, "DAC1"},
	{"LOUT2", NULL, "DAC2"},
	{"LOUT3", NULL, "DAC3"},
	{"LOUT4", NULL, "DAC4"},
	{"LOUT5", NULL, "DAC5"},
	{"LOUT6", NULL, "DAC6"},

	{"ROUT1", NULL, "DAC1"},
	{"ROUT2", NULL, "DAC2"},
	{"ROUT3", NULL, "DAC3"},
	{"ROUT4", NULL, "DAC4"},
	{"ROUT5", NULL, "DAC5"},
	{"ROUT6", NULL, "DAC6"},

	{"DAC1", NULL, "Playback"},
	{"DAC2", NULL, "Playback"},
	{"DAC3", NULL, "Playback"},
	{"DAC4", NULL, "Playback"},
	{"DAC5", NULL, "Playback"},
	{"DAC6", NULL, "Playback"},

	{"Capture", NULL, "ADC1"},
	{"Capture", NULL, "ADC2"},

	{"ADC1", NULL, "LIN1"},
	{"ADC2", NULL, "LIN2"},

	{"ADC1", NULL, "RIN1"},
	{"ADC2", NULL, "RIN2"},
	};

	static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
	struct snd_soc_dai *dai)
	{
	struct snd_soc_codec *codec = dai->codec;
	struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
	struct device *dev = codec->dev;

	mutex_lock(&priv->lock);
	priv->cnt--;
	if (priv->cnt < 0) {
	dev_err(dev, "unexpected counter error\n");
	priv->cnt = 0;
	}
	if (!priv->cnt)
	priv->fmt_ctrl = NO_FMT;
	mutex_unlock(&priv->lock);
	}

	static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
	{
	struct snd_soc_codec *codec = dai->codec;
	struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);

	fmt &= SND_SOC_DAIFMT_FORMAT_MASK;

	switch (fmt) {
	case SND_SOC_DAIFMT_RIGHT_J:
	case SND_SOC_DAIFMT_LEFT_J:
	case SND_SOC_DAIFMT_I2S:
	priv->fmt = fmt;

	break;
	default:
	return -EINVAL;
	}

	return 0;
	}

	static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct snd_soc_dai *dai)
	{
	struct snd_soc_codec *codec = dai->codec;
	struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
	const struct ak4613_formats *fmts;
	struct device *dev = codec->dev;
	unsigned int width = params_width(params);
	unsigned int fmt = priv->fmt;
	unsigned int rate;
	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
	int i, ret;
	u8 fmt_ctrl, ctrl2;

	rate = params_rate(params);
	switch (rate) {
	case 32000:
	case 44100:
	case 48000:
	ctrl2 = DFS_NORMAL_SPEED;
	break;
	case 88200:
	case 96000:
	ctrl2 = DFS_DOUBLE_SPEED;
	break;
	case 176400:
	case 192000:
	ctrl2 = DFS_QUAD_SPEED;
	break;
	default:
	return -EINVAL;
	}

	/*
	* FIXME
	*
	* It doesn't support TDM at this point
	*/
	fmt_ctrl = NO_FMT;
	for (i = 0; i < ARRAY_SIZE(ak4613_iface); i++) {
	fmts = (is_play) ? &ak4613_iface[i].playback :
	&ak4613_iface[i].capture;

	if (fmts->fmt != fmt)
	continue;

	if (fmt == SND_SOC_DAIFMT_RIGHT_J) {
	if (fmts->width != width)
	continue;
	} else {
	if (fmts->width < width)
	continue;
	}

	fmt_ctrl = AUDIO_IFACE_IDX_TO_VAL(i);
	break;
	}

	ret = -EINVAL;
	if (fmt_ctrl == NO_FMT)
	goto hw_params_end;

	mutex_lock(&priv->lock);
	if ((priv->fmt_ctrl == NO_FMT) \|\|
	(priv->fmt_ctrl == fmt_ctrl)) {
	priv->fmt_ctrl = fmt_ctrl;
	priv->cnt++;
	ret = 0;
	}
	mutex_unlock(&priv->lock);

	if (ret < 0)
	goto hw_params_end;

	snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
	snd_soc_write(codec, CTRL2, ctrl2);

	hw_params_end:
	if (ret < 0)
	dev_warn(dev, "unsupported data width/format combination\n");

	return ret;
	}

	static int ak4613_set_bias_level(struct snd_soc_codec *codec,
	enum snd_soc_bias_level level)
	{
	u8 mgmt1 = 0;

	switch (level) {
	case SND_SOC_BIAS_ON:
	mgmt1 \|= RSTN;
	/* fall through */
	case SND_SOC_BIAS_PREPARE:
	mgmt1 \|= PMADC \| PMDAC;
	/* fall through */
	case SND_SOC_BIAS_STANDBY:
	mgmt1 \|= PMVR;
	/* fall through */
	case SND_SOC_BIAS_OFF:
	default:
	break;
	}

	snd_soc_write(codec, PW_MGMT1, mgmt1);

	return 0;
	}

	static const struct snd_soc_dai_ops ak4613_dai_ops = {
	.shutdown = ak4613_dai_shutdown,
	.set_fmt = ak4613_dai_set_fmt,
	.hw_params = ak4613_dai_hw_params,
	};

	#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 \|\
	SNDRV_PCM_RATE_44100 \|\
	SNDRV_PCM_RATE_48000 \|\
	SNDRV_PCM_RATE_64000 \|\
	SNDRV_PCM_RATE_88200 \|\
	SNDRV_PCM_RATE_96000 \|\
	SNDRV_PCM_RATE_176400 \|\
	SNDRV_PCM_RATE_192000)
	#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S16_LE \|\
	SNDRV_PCM_FMTBIT_S24_LE)

	static struct snd_soc_dai_driver ak4613_dai = {
	.name = "ak4613-hifi",
	.playback = {
	.stream_name = "Playback",
	.channels_min = 2,
	.channels_max = 2,
	.rates = AK4613_PCM_RATE,
	.formats = AK4613_PCM_FMTBIT,
	},
	.capture = {
	.stream_name = "Capture",
	.channels_min = 2,
	.channels_max = 2,
	.rates = AK4613_PCM_RATE,
	.formats = AK4613_PCM_FMTBIT,
	},
	.ops = &ak4613_dai_ops,
	.symmetric_rates = 1,
	};

	static int ak4613_resume(struct snd_soc_codec *codec)
	{
	struct regmap *regmap = dev_get_regmap(codec->dev, NULL);

	regcache_mark_dirty(regmap);
	return regcache_sync(regmap);
	}

	static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
	.resume = ak4613_resume,
	.set_bias_level = ak4613_set_bias_level,
	.controls = ak4613_snd_controls,
	.num_controls = ARRAY_SIZE(ak4613_snd_controls),
	.dapm_widgets = ak4613_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
	.dapm_routes = ak4613_intercon,
	.num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
	};

	static int ak4613_i2c_probe(struct i2c_client *i2c,
	const struct i2c_device_id *id)
	{
	struct device *dev = &i2c->dev;
	struct device_node *np = dev->of_node;
	const struct regmap_config *regmap_cfg;
	struct regmap *regmap;
	struct ak4613_priv *priv;

	regmap_cfg = NULL;
	if (np) {
	const struct of_device_id *of_id;

	of_id = of_match_device(ak4613_of_match, dev);
	if (of_id)
	regmap_cfg = of_id->data;
	} else {
	regmap_cfg = (const struct regmap_config *)id->driver_data;
	}

	if (!regmap_cfg)
	return -EINVAL;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
	return -ENOMEM;

	priv->fmt_ctrl = NO_FMT;
	priv->cnt = 0;

	mutex_init(&priv->lock);

	i2c_set_clientdata(i2c, priv);

	regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
	if (IS_ERR(regmap))
	return PTR_ERR(regmap);

	return snd_soc_register_codec(dev, &soc_codec_dev_ak4613,
	&ak4613_dai, 1);
	}

	static int ak4613_i2c_remove(struct i2c_client *client)
	{
	snd_soc_unregister_codec(&client->dev);
	return 0;
	}

	static struct i2c_driver ak4613_i2c_driver = {
	.driver = {
	.name = "ak4613-codec",
	.owner = THIS_MODULE,
	.of_match_table = ak4613_of_match,
	},
	.probe = ak4613_i2c_probe,
	.remove = ak4613_i2c_remove,
	.id_table = ak4613_i2c_id,
	};

	module_i2c_driver(ak4613_i2c_driver);

	MODULE_DESCRIPTION("Soc AK4613 driver");
	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
	MODULE_LICENSE("GPL v2");