[deliverable/linux.git] / sound / soc / codecs / ak4613.c

/*
 * 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),
};

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");
Commit	Line	Data
b0757062 KM	1	/*
	2	* ak4613.c -- Asahi Kasei ALSA Soc Audio driver
	3	*
	4	* Copyright (C) 2015 Renesas Electronics Corporation
	5	* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
	6	*
	7	* Based on ak4642.c by Kuninori Morimoto
	8	* Based on wm8731.c by Richard Purdie
	9	* Based on ak4535.c by Richard Purdie
	10	* Based on wm8753.c by Liam Girdwood
	11	*
	12	* This program is free software; you can redistribute it and/or modify
	13	* it under the terms of the GNU General Public License version 2 as
	14	* published by the Free Software Foundation.
	15	*/
	16
	17	#include <linux/clk.h>
	18	#include <linux/i2c.h>
	19	#include <linux/slab.h>
	20	#include <linux/of_device.h>
	21	#include <linux/module.h>
	22	#include <linux/regmap.h>
	23	#include <sound/soc.h>
	24	#include <sound/pcm_params.h>
e3a4d958	25	#include <sound/tlv.h>
b0757062 KM	26
	27	#define PW_MGMT1 0x00 /* Power Management 1 */
	28	#define PW_MGMT2 0x01 /* Power Management 2 */
	29	#define PW_MGMT3 0x02 /* Power Management 3 */
	30	#define CTRL1 0x03 /* Control 1 */
	31	#define CTRL2 0x04 /* Control 2 */
	32	#define DEMP1 0x05 /* De-emphasis1 */
	33	#define DEMP2 0x06 /* De-emphasis2 */
	34	#define OFD 0x07 /* Overflow Detect */
	35	#define ZRD 0x08 /* Zero Detect */
	36	#define ICTRL 0x09 /* Input Control */
	37	#define OCTRL 0x0a /* Output Control */
	38	#define LOUT1 0x0b /* LOUT1 Volume Control */
	39	#define ROUT1 0x0c /* ROUT1 Volume Control */
	40	#define LOUT2 0x0d /* LOUT2 Volume Control */
	41	#define ROUT2 0x0e /* ROUT2 Volume Control */
	42	#define LOUT3 0x0f /* LOUT3 Volume Control */
	43	#define ROUT3 0x10 /* ROUT3 Volume Control */
	44	#define LOUT4 0x11 /* LOUT4 Volume Control */
	45	#define ROUT4 0x12 /* ROUT4 Volume Control */
	46	#define LOUT5 0x13 /* LOUT5 Volume Control */
	47	#define ROUT5 0x14 /* ROUT5 Volume Control */
	48	#define LOUT6 0x15 /* LOUT6 Volume Control */
	49	#define ROUT6 0x16 /* ROUT6 Volume Control */
	50
	51	/* PW_MGMT1 */
	52	#define RSTN BIT(0)
	53	#define PMDAC BIT(1)
	54	#define PMADC BIT(2)
	55	#define PMVR BIT(3)
	56
	57	/* PW_MGMT2 */
	58	#define PMAD_ALL 0x7
	59
	60	/* PW_MGMT3 */
	61	#define PMDA_ALL 0x3f
	62
	63	/* CTRL1 */
	64	#define DIF0 BIT(3)
	65	#define DIF1 BIT(4)
	66	#define DIF2 BIT(5)
	67	#define TDM0 BIT(6)
	68	#define TDM1 BIT(7)
	69	#define NO_FMT (0xff)
	70	#define FMT_MASK (0xf8)
	71
	72	/* CTRL2 */
	73	#define DFS_NORMAL_SPEED (0 << 2)
	74	#define DFS_DOUBLE_SPEED (1 << 2)
	75	#define DFS_QUAD_SPEED (2 << 2)
	76
	77	struct ak4613_priv {
	78	struct mutex lock;
	79
	80	unsigned int fmt;
	81	u8 fmt_ctrl;
	82	int cnt;
	83	};
	84
	85	struct ak4613_formats {
	86	unsigned int width;
	87	unsigned int fmt;
	88	};
	89
90	struct ak4613_interface {
91	struct ak4613_formats capture;
92	struct ak4613_formats playback;
93	};
94
e3a4d958 KM	95	/*
	96	* Playback Volume
	97	*
	98	* max : 0x00 : 0 dB
	99	* ( 0.5 dB step )
	100	* min : 0xFE : -127.0 dB
	101	* mute: 0xFF
	102	*/
	103	static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
	104
	105	static const struct snd_kcontrol_new ak4613_snd_controls[] = {
	106	SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
	107	0, 0xFF, 1, out_tlv),
	108	SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
	109	0, 0xFF, 1, out_tlv),
	110	SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
	111	0, 0xFF, 1, out_tlv),
	112	SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
	113	0, 0xFF, 1, out_tlv),
	114	SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
	115	0, 0xFF, 1, out_tlv),
	116	SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
	117	0, 0xFF, 1, out_tlv),
	118	};
	119
b0757062 KM	120	static const struct reg_default ak4613_reg[] = {
	121	{ 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
	122	{ 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
	123	{ 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
	124	{ 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
	125	{ 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
	126	{ 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
	127	};
	128
	129	#define AUDIO_IFACE_IDX_TO_VAL(i) (i << 3)
	130	#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
	131	static const struct ak4613_interface ak4613_iface[] = {
	132	/* capture / / playback */
	133	[0] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(16, RIGHT_J) },
	134	[1] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(20, RIGHT_J) },
	135	[2] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, RIGHT_J) },
	136	[3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) },
	137	[4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) },
	138	};
	139
	140	static const struct regmap_config ak4613_regmap_cfg = {
	141	.reg_bits = 8,
	142	.val_bits = 8,
	143	.max_register = 0x16,
	144	.reg_defaults = ak4613_reg,
	145	.num_reg_defaults = ARRAY_SIZE(ak4613_reg),
	146	};
	147
	148	static const struct of_device_id ak4613_of_match[] = {
	149	{ .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg },
	150	{},
	151	};
	152	MODULE_DEVICE_TABLE(of, ak4613_of_match);
	153
	154	static const struct i2c_device_id ak4613_i2c_id[] = {
	155	{ "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
	156	{ }
	157	};
	158	MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
	159
	160	static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
	161
	162	/* Outputs */
	163	SND_SOC_DAPM_OUTPUT("LOUT1"),
	164	SND_SOC_DAPM_OUTPUT("LOUT2"),
	165	SND_SOC_DAPM_OUTPUT("LOUT3"),
	166	SND_SOC_DAPM_OUTPUT("LOUT4"),
	167	SND_SOC_DAPM_OUTPUT("LOUT5"),
	168	SND_SOC_DAPM_OUTPUT("LOUT6"),
	169
	170	SND_SOC_DAPM_OUTPUT("ROUT1"),
	171	SND_SOC_DAPM_OUTPUT("ROUT2"),
	172	SND_SOC_DAPM_OUTPUT("ROUT3"),
	173	SND_SOC_DAPM_OUTPUT("ROUT4"),
	174	SND_SOC_DAPM_OUTPUT("ROUT5"),
	175	SND_SOC_DAPM_OUTPUT("ROUT6"),
	176
	177	/* Inputs */
	178	SND_SOC_DAPM_INPUT("LIN1"),
	179	SND_SOC_DAPM_INPUT("LIN2"),
	180
	181	SND_SOC_DAPM_INPUT("RIN1"),
	182	SND_SOC_DAPM_INPUT("RIN2"),
	183
184	/* DAC */
185	SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
186	SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
187	SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
188	SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
189	SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
190	SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
191
192	/* ADC */
193	SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
194	SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
195	};
196
197	static const struct snd_soc_dapm_route ak4613_intercon[] = {
198	{"LOUT1", NULL, "DAC1"},
199	{"LOUT2", NULL, "DAC2"},
200	{"LOUT3", NULL, "DAC3"},
201	{"LOUT4", NULL, "DAC4"},
202	{"LOUT5", NULL, "DAC5"},
203	{"LOUT6", NULL, "DAC6"},
204
205	{"ROUT1", NULL, "DAC1"},
206	{"ROUT2", NULL, "DAC2"},
207	{"ROUT3", NULL, "DAC3"},
208	{"ROUT4", NULL, "DAC4"},
209	{"ROUT5", NULL, "DAC5"},
210	{"ROUT6", NULL, "DAC6"},
211
212	{"DAC1", NULL, "Playback"},
213	{"DAC2", NULL, "Playback"},
214	{"DAC3", NULL, "Playback"},
215	{"DAC4", NULL, "Playback"},
216	{"DAC5", NULL, "Playback"},
217	{"DAC6", NULL, "Playback"},
218
219	{"Capture", NULL, "ADC1"},
220	{"Capture", NULL, "ADC2"},
221
222	{"ADC1", NULL, "LIN1"},
223	{"ADC2", NULL, "LIN2"},
224
225	{"ADC1", NULL, "RIN1"},
226	{"ADC2", NULL, "RIN2"},
227	};
228
229	static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
230	struct snd_soc_dai *dai)
231	{
232	struct snd_soc_codec *codec = dai->codec;
233	struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
234	struct device *dev = codec->dev;
235
236	mutex_lock(&priv->lock);
237	priv->cnt--;
238	if (priv->cnt < 0) {
239	dev_err(dev, "unexpected counter error\n");
240	priv->cnt = 0;
241	}
242	if (!priv->cnt)
243	priv->fmt_ctrl = NO_FMT;
244	mutex_unlock(&priv->lock);
245	}
246
247	static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
248	{
249	struct snd_soc_codec *codec = dai->codec;
250	struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
251
252	fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
253
254	switch (fmt) {
255	case SND_SOC_DAIFMT_RIGHT_J:
256	case SND_SOC_DAIFMT_LEFT_J:
257	case SND_SOC_DAIFMT_I2S:
258	priv->fmt = fmt;
259
260	break;
261	default:
262	return -EINVAL;
263	}
264
265	return 0;
266	}
267
268	static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
269	struct snd_pcm_hw_params *params,
270	struct snd_soc_dai *dai)
271	{
272	struct snd_soc_codec *codec = dai->codec;
273	struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
274	const struct ak4613_formats *fmts;
275	struct device *dev = codec->dev;
276	unsigned int width = params_width(params);
277	unsigned int fmt = priv->fmt;
278	unsigned int rate;
279	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
280	int i, ret;
281	u8 fmt_ctrl, ctrl2;
282
283	rate = params_rate(params);
284	switch (rate) {
285	case 32000:
286	case 44100:
287	case 48000:
288	ctrl2 = DFS_NORMAL_SPEED;
289	break;
290	case 88200:
291	case 96000:
292	ctrl2 = DFS_DOUBLE_SPEED;
293	break;
294	case 176400:
295	case 192000:
296	ctrl2 = DFS_QUAD_SPEED;
297	break;
298	default:
299	return -EINVAL;
300	}
301
302	/*
303	* FIXME
304	*
305	* It doesn't support TDM at this point
306	*/
307	fmt_ctrl = NO_FMT;
308	for (i = 0; i < ARRAY_SIZE(ak4613_iface); i++) {
309	fmts = (is_play) ? &ak4613_iface[i].playback :
310	&ak4613_iface[i].capture;
311
312	if (fmts->fmt != fmt)
313	continue;
314
315	if (fmt == SND_SOC_DAIFMT_RIGHT_J) {
316	if (fmts->width != width)
317	continue;
318	} else {
319	if (fmts->width < width)
320	continue;
321	}
322
323	fmt_ctrl = AUDIO_IFACE_IDX_TO_VAL(i);
324	break;
325	}
326
327	ret = -EINVAL;
328	if (fmt_ctrl == NO_FMT)
329	goto hw_params_end;
330
331	mutex_lock(&priv->lock);
332	if ((priv->fmt_ctrl == NO_FMT) \|\|
333	(priv->fmt_ctrl == fmt_ctrl)) {
334	priv->fmt_ctrl = fmt_ctrl;
335	priv->cnt++;
336	ret = 0;
337	}
338	mutex_unlock(&priv->lock);
339
340	if (ret < 0)
341	goto hw_params_end;
342
343	snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
344	snd_soc_write(codec, CTRL2, ctrl2);
345
346	hw_params_end:
347	if (ret < 0)
348	dev_warn(dev, "unsupported data width/format combination\n");
349
350	return ret;
351	}
352
353	static int ak4613_set_bias_level(struct snd_soc_codec *codec,
354	enum snd_soc_bias_level level)
355	{
356	u8 mgmt1 = 0;
357
358	switch (level) {
359	case SND_SOC_BIAS_ON:
360	mgmt1 \|= RSTN;
361	/* fall through */
362	case SND_SOC_BIAS_PREPARE:
363	mgmt1 \|= PMADC \| PMDAC;
364	/* fall through */
365	case SND_SOC_BIAS_STANDBY:
366	mgmt1 \|= PMVR;
367	/* fall through */
368	case SND_SOC_BIAS_OFF:
369	default:
370	break;
371	}
372
373	snd_soc_write(codec, PW_MGMT1, mgmt1);
374
375	return 0;
376	}
377
378	static const struct snd_soc_dai_ops ak4613_dai_ops = {
379	.shutdown = ak4613_dai_shutdown,
380	.set_fmt = ak4613_dai_set_fmt,
381	.hw_params = ak4613_dai_hw_params,
382	};
383
384	#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 \|\
385	SNDRV_PCM_RATE_44100 \|\
386	SNDRV_PCM_RATE_48000 \|\
387	SNDRV_PCM_RATE_64000 \|\
388	SNDRV_PCM_RATE_88200 \|\
389	SNDRV_PCM_RATE_96000 \|\
390	SNDRV_PCM_RATE_176400 \|\
391	SNDRV_PCM_RATE_192000)
392	#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S16_LE \|\
393	SNDRV_PCM_FMTBIT_S24_LE)
394
395	static struct snd_soc_dai_driver ak4613_dai = {
396	.name = "ak4613-hifi",
397	.playback = {
398	.stream_name = "Playback",
399	.channels_min = 2,
400	.channels_max = 2,
401	.rates = AK4613_PCM_RATE,
402	.formats = AK4613_PCM_FMTBIT,
403	},
404	.capture = {
405	.stream_name = "Capture",
406	.channels_min = 2,
407	.channels_max = 2,
408	.rates = AK4613_PCM_RATE,
409	.formats = AK4613_PCM_FMTBIT,
410	},
411	.ops = &ak4613_dai_ops,
412	.symmetric_rates = 1,
413	};
414
415	static int ak4613_resume(struct snd_soc_codec *codec)
416	{
417	struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
418
419	regcache_mark_dirty(regmap);
420	return regcache_sync(regmap);
421	}
422
423	static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
424	.resume = ak4613_resume,
425	.set_bias_level = ak4613_set_bias_level,
e3a4d958 KM	426	.controls = ak4613_snd_controls,
e3a4d958 KM	427	.num_controls = ARRAY_SIZE(ak4613_snd_controls),
b0757062 KM	428	.dapm_widgets = ak4613_dapm_widgets,
	429	.num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
	430	.dapm_routes = ak4613_intercon,
	431	.num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
	432	};
	433
	434	static int ak4613_i2c_probe(struct i2c_client *i2c,
	435	const struct i2c_device_id *id)
	436	{
	437	struct device *dev = &i2c->dev;
	438	struct device_node *np = dev->of_node;
	439	const struct regmap_config *regmap_cfg;
	440	struct regmap *regmap;
	441	struct ak4613_priv *priv;
	442
	443	regmap_cfg = NULL;
	444	if (np) {
	445	const struct of_device_id *of_id;
	446
	447	of_id = of_match_device(ak4613_of_match, dev);
	448	if (of_id)
	449	regmap_cfg = of_id->data;
	450	} else {
	451	regmap_cfg = (const struct regmap_config *)id->driver_data;
	452	}
	453
	454	if (!regmap_cfg)
	455	return -EINVAL;
	456
	457	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	458	if (!priv)
	459	return -ENOMEM;
	460
	461	priv->fmt_ctrl = NO_FMT;
	462	priv->cnt = 0;
	463
	464	mutex_init(&priv->lock);
	465
	466	i2c_set_clientdata(i2c, priv);
	467
	468	regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
	469	if (IS_ERR(regmap))
	470	return PTR_ERR(regmap);
	471
	472	return snd_soc_register_codec(dev, &soc_codec_dev_ak4613,
	473	&ak4613_dai, 1);
	474	}
	475
	476	static int ak4613_i2c_remove(struct i2c_client *client)
	477	{
	478	snd_soc_unregister_codec(&client->dev);
	479	return 0;
	480	}
	481
	482	static struct i2c_driver ak4613_i2c_driver = {
	483	.driver = {
	484	.name = "ak4613-codec",
	485	.owner = THIS_MODULE,
	486	.of_match_table = ak4613_of_match,
	487	},
	488	.probe = ak4613_i2c_probe,
	489	.remove = ak4613_i2c_remove,
	490	.id_table = ak4613_i2c_id,
	491	};
492
493	module_i2c_driver(ak4613_i2c_driver);
494
495	MODULE_DESCRIPTION("Soc AK4613 driver");
496	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
497	MODULE_LICENSE("GPL v2");