[mirror_ubuntu-hirsute-kernel.git] / sound / soc / codecs / ak4613.c

// SPDX-License-Identifier: GPL-2.0
//
// 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

#include <linux/clk.h>
#include <linux/delay.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_MASK		(3 << 2)
#define DFS_NORMAL_SPEED	(0 << 2)
#define DFS_DOUBLE_SPEED	(1 << 2)
#define DFS_QUAD_SPEED		(2 << 2)

/* ICTRL */
#define ICTRL_MASK	(0x3)

/* OCTRL */
#define OCTRL_MASK	(0x3F)

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

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

struct ak4613_priv {
	struct mutex lock;
	const struct ak4613_interface *iface;
	struct snd_pcm_hw_constraint_list constraint;
	struct work_struct dummy_write_work;
	struct snd_soc_component *component;
	unsigned int rate;
	unsigned int sysclk;

	unsigned int fmt;
	u8 oc;
	u8 ic;
	int cnt;
};

/*
 * 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_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
static const struct ak4613_interface ak4613_iface[] = {
	/* capture */				/* playback */
	/* [0] - [2] are not supported */
	[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_component *component = dai->component;
	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
	struct device *dev = component->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->iface = NULL;
	mutex_unlock(&priv->lock);
}

static void ak4613_hw_constraints(struct ak4613_priv *priv,
				  struct snd_pcm_runtime *runtime)
{
	static const unsigned int ak4613_rates[] = {
		 32000,
		 44100,
		 48000,
		 64000,
		 88200,
		 96000,
		176400,
		192000,
	};
	struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
	unsigned int fs;
	int i;

	constraint->list	= ak4613_rates;
	constraint->mask	= 0;
	constraint->count	= 0;

	/*
	 * Slave Mode
	 *	Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
	 *	Double: [64kHz, 96kHz] : 256fs
	 *	Quad  : [128kHz,192kHz]: 128fs
	 *
	 * Master mode
	 *	Normal: [32kHz, 48kHz] : 256fs or 512fs
	 *	Double: [64kHz, 96kHz] : 256fs
	 *	Quad  : [128kHz,192kHz]: 128fs
	*/
	for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
		/* minimum fs on each range */
		fs = (ak4613_rates[i] <= 96000) ? 256 : 128;

		if (priv->sysclk >= ak4613_rates[i] * fs)
			constraint->count = i + 1;
	}

	snd_pcm_hw_constraint_list(runtime, 0,
				SNDRV_PCM_HW_PARAM_RATE, constraint);
}

static int ak4613_dai_startup(struct snd_pcm_substream *substream,
			      struct snd_soc_dai *dai)
{
	struct snd_soc_component *component = dai->component;
	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);

	priv->cnt++;

	ak4613_hw_constraints(priv, substream->runtime);

	return 0;
}

static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
				 int clk_id, unsigned int freq, int dir)
{
	struct snd_soc_component *component = codec_dai->component;
	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);

	priv->sysclk = freq;

	return 0;
}

static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
	struct snd_soc_component *component = dai->component;
	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);

	fmt &= SND_SOC_DAIFMT_FORMAT_MASK;

	switch (fmt) {
	case SND_SOC_DAIFMT_LEFT_J:
	case SND_SOC_DAIFMT_I2S:
		priv->fmt = fmt;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
				    int is_play,
				    unsigned int fmt, unsigned int width)
{
	const struct ak4613_formats *fmts;

	fmts = (is_play) ? &iface->playback : &iface->capture;

	if (fmts->fmt != fmt)
		return false;

	if (fmts->width != width)
		return false;

	return true;
}

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_component *component = dai->component;
	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
	const struct ak4613_interface *iface;
	struct device *dev = component->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 64000:
	case 88200:
	case 96000:
		ctrl2 = DFS_DOUBLE_SPEED;
		break;
	case 176400:
	case 192000:
		ctrl2 = DFS_QUAD_SPEED;
		break;
	default:
		return -EINVAL;
	}
	priv->rate = rate;

	/*
	 * FIXME
	 *
	 * It doesn't support TDM at this point
	 */
	fmt_ctrl = NO_FMT;
	ret = -EINVAL;
	iface = NULL;

	mutex_lock(&priv->lock);
	if (priv->iface) {
		if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
			iface = priv->iface;
	} else {
		for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
			if (!ak4613_dai_fmt_matching(ak4613_iface + i,
						     is_play,
						     fmt, width))
				continue;
			iface = ak4613_iface + i;
			break;
		}
	}

	if ((priv->iface == NULL) ||
	    (priv->iface == iface)) {
		priv->iface = iface;
		ret = 0;
	}
	mutex_unlock(&priv->lock);

	if (ret < 0)
		goto hw_params_end;

	fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);

	snd_soc_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl);
	snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);

	snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
	snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc);

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_component *component,
				 enum snd_soc_bias_level level)
{
	u8 mgmt1 = 0;

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

	snd_soc_component_write(component, PW_MGMT1, mgmt1);

	return 0;
}

static void ak4613_dummy_write(struct work_struct *work)
{
	struct ak4613_priv *priv = container_of(work,
						struct ak4613_priv,
						dummy_write_work);
	struct snd_soc_component *component = priv->component;
	unsigned int mgmt1;
	unsigned int mgmt3;

	/*
	 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
	 *
	 * Note
	 *
	 * To avoid extra delay, we want to avoid preemption here,
	 * but we can't. Because it uses I2C access which is using IRQ
	 * and sleep. Thus, delay might be more than 5 LR clocks
	 * see also
	 *	ak4613_dai_trigger()
	 */
	udelay(5000000 / priv->rate);

	mgmt1 = snd_soc_component_read(component, PW_MGMT1);
	mgmt3 = snd_soc_component_read(component, PW_MGMT3);

	snd_soc_component_write(component, PW_MGMT1, mgmt1);
	snd_soc_component_write(component, PW_MGMT3, mgmt3);
}

static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd,
			      struct snd_soc_dai *dai)
{
	struct snd_soc_component *component = dai->component;
	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);

	/*
	 * FIXME
	 *
	 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
	 * from Power Down Release. Otherwise, Playback volume will be 0dB.
	 * To avoid complex multiple delay/dummy_write method from
	 * ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...),
	 * call it once here.
	 *
	 * But, unfortunately, we can't "write" here because here is atomic
	 * context (It uses I2C access for writing).
	 * Thus, use schedule_work() to switching to normal context
	 * immediately.
	 *
	 * Note
	 *
	 * Calling ak4613_dummy_write() function might be delayed.
	 * In such case, ak4613 volume might be temporarily 0dB when
	 * beggining of playback.
	 * see also
	 *	ak4613_dummy_write()
	 */

	if ((cmd != SNDRV_PCM_TRIGGER_START) &&
	    (cmd != SNDRV_PCM_TRIGGER_RESUME))
		return 0;

	if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
		return  0;

	priv->component = component;
	schedule_work(&priv->dummy_write_work);

	return 0;
}

static const struct snd_soc_dai_ops ak4613_dai_ops = {
	.startup	= ak4613_dai_startup,
	.shutdown	= ak4613_dai_shutdown,
	.set_sysclk	= ak4613_dai_set_sysclk,
	.set_fmt	= ak4613_dai_set_fmt,
	.trigger	= ak4613_dai_trigger,
	.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_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_suspend(struct snd_soc_component *component)
{
	struct regmap *regmap = dev_get_regmap(component->dev, NULL);

	regcache_cache_only(regmap, true);
	regcache_mark_dirty(regmap);
	return 0;
}

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

	regcache_cache_only(regmap, false);
	return regcache_sync(regmap);
}

static const struct snd_soc_component_driver soc_component_dev_ak4613 = {
	.suspend		= ak4613_suspend,
	.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),
	.idle_bias_on		= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static void ak4613_parse_of(struct ak4613_priv *priv,
			    struct device *dev)
{
	struct device_node *np = dev->of_node;
	char prop[32];
	int i;

	/* Input 1 - 2 */
	for (i = 0; i < 2; i++) {
		snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
		if (!of_get_property(np, prop, NULL))
			priv->ic |= 1 << i;
	}

	/* Output 1 - 6 */
	for (i = 0; i < 6; i++) {
		snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
		if (!of_get_property(np, prop, NULL))
			priv->oc |= 1 << i;
	}
}

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;

	ak4613_parse_of(priv, dev);

	priv->iface		= NULL;
	priv->cnt		= 0;
	priv->sysclk		= 0;
	INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);

	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 devm_snd_soc_register_component(dev, &soc_component_dev_ak4613,
				      &ak4613_dai, 1);
}

static int ak4613_i2c_remove(struct i2c_client *client)
{
	return 0;
}

static struct i2c_driver ak4613_i2c_driver = {
	.driver = {
		.name = "ak4613-codec",
		.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
e028937c KM	1	// SPDX-License-Identifier: GPL-2.0
	2	//
	3	// ak4613.c -- Asahi Kasei ALSA Soc Audio driver
	4	//
	5	// Copyright (C) 2015 Renesas Electronics Corporation
	6	// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
	7	//
	8	// Based on ak4642.c by Kuninori Morimoto
	9	// Based on wm8731.c by Richard Purdie
	10	// Based on ak4535.c by Richard Purdie
	11	// Based on wm8753.c by Liam Girdwood
b0757062 KM	12
b0757062 KM	13	#include <linux/clk.h>
03bbf9f5	14	#include <linux/delay.h>
b0757062 KM	15	#include <linux/i2c.h>
	16	#include <linux/slab.h>
	17	#include <linux/of_device.h>
	18	#include <linux/module.h>
	19	#include <linux/regmap.h>
	20	#include <sound/soc.h>
	21	#include <sound/pcm_params.h>
e3a4d958	22	#include <sound/tlv.h>
b0757062 KM	23
	24	#define PW_MGMT1 0x00 /* Power Management 1 */
	25	#define PW_MGMT2 0x01 /* Power Management 2 */
	26	#define PW_MGMT3 0x02 /* Power Management 3 */
	27	#define CTRL1 0x03 /* Control 1 */
	28	#define CTRL2 0x04 /* Control 2 */
	29	#define DEMP1 0x05 /* De-emphasis1 */
	30	#define DEMP2 0x06 /* De-emphasis2 */
	31	#define OFD 0x07 /* Overflow Detect */
	32	#define ZRD 0x08 /* Zero Detect */
	33	#define ICTRL 0x09 /* Input Control */
	34	#define OCTRL 0x0a /* Output Control */
	35	#define LOUT1 0x0b /* LOUT1 Volume Control */
	36	#define ROUT1 0x0c /* ROUT1 Volume Control */
	37	#define LOUT2 0x0d /* LOUT2 Volume Control */
	38	#define ROUT2 0x0e /* ROUT2 Volume Control */
	39	#define LOUT3 0x0f /* LOUT3 Volume Control */
	40	#define ROUT3 0x10 /* ROUT3 Volume Control */
	41	#define LOUT4 0x11 /* LOUT4 Volume Control */
	42	#define ROUT4 0x12 /* ROUT4 Volume Control */
	43	#define LOUT5 0x13 /* LOUT5 Volume Control */
	44	#define ROUT5 0x14 /* ROUT5 Volume Control */
	45	#define LOUT6 0x15 /* LOUT6 Volume Control */
	46	#define ROUT6 0x16 /* ROUT6 Volume Control */
	47
	48	/* PW_MGMT1 */
	49	#define RSTN BIT(0)
	50	#define PMDAC BIT(1)
	51	#define PMADC BIT(2)
	52	#define PMVR BIT(3)
	53
	54	/* PW_MGMT2 */
	55	#define PMAD_ALL 0x7
	56
	57	/* PW_MGMT3 */
	58	#define PMDA_ALL 0x3f
	59
	60	/* CTRL1 */
	61	#define DIF0 BIT(3)
	62	#define DIF1 BIT(4)
	63	#define DIF2 BIT(5)
	64	#define TDM0 BIT(6)
	65	#define TDM1 BIT(7)
	66	#define NO_FMT (0xff)
	67	#define FMT_MASK (0xf8)
	68
	69	/* CTRL2 */
b323dd30	70	#define DFS_MASK (3 << 2)
b0757062 KM	71	#define DFS_NORMAL_SPEED (0 << 2)
	72	#define DFS_DOUBLE_SPEED (1 << 2)
	73	#define DFS_QUAD_SPEED (2 << 2)
	74
4898b61e KM	75	/* ICTRL */
	76	#define ICTRL_MASK (0x3)
	77
	78	/* OCTRL */
	79	#define OCTRL_MASK (0x3F)
	80
b0757062 KM	81	struct ak4613_formats {
	82	unsigned int width;
	83	unsigned int fmt;
	84	};
	85
	86	struct ak4613_interface {
	87	struct ak4613_formats capture;
	88	struct ak4613_formats playback;
	89	};
	90
35299f17 KM	91	struct ak4613_priv {
	92	struct mutex lock;
	93	const struct ak4613_interface *iface;
907cd880	94	struct snd_pcm_hw_constraint_list constraint;
03bbf9f5 KM	95	struct work_struct dummy_write_work;
	96	struct snd_soc_component *component;
	97	unsigned int rate;
907cd880	98	unsigned int sysclk;
35299f17 KM	99
	100	unsigned int fmt;
	101	u8 oc;
	102	u8 ic;
	103	int cnt;
	104	};
	105
e3a4d958 KM	106	/*
	107	* Playback Volume
	108	*
	109	* max : 0x00 : 0 dB
	110	* ( 0.5 dB step )
	111	* min : 0xFE : -127.0 dB
	112	* mute: 0xFF
	113	*/
	114	static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
	115
	116	static const struct snd_kcontrol_new ak4613_snd_controls[] = {
	117	SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
	118	0, 0xFF, 1, out_tlv),
	119	SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
	120	0, 0xFF, 1, out_tlv),
	121	SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
	122	0, 0xFF, 1, out_tlv),
	123	SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
	124	0, 0xFF, 1, out_tlv),
	125	SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
	126	0, 0xFF, 1, out_tlv),
	127	SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
	128	0, 0xFF, 1, out_tlv),
	129	};
	130
b0757062 KM	131	static const struct reg_default ak4613_reg[] = {
	132	{ 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
	133	{ 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
	134	{ 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
	135	{ 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
	136	{ 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
	137	{ 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
	138	};
	139
35299f17	140	#define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
b0757062 KM	141	#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
	142	static const struct ak4613_interface ak4613_iface[] = {
	143	/* capture / / playback */
ec185f95	144	/* [0] - [2] are not supported */
b0757062 KM	145	[3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) },
	146	[4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) },
	147	};
	148
	149	static const struct regmap_config ak4613_regmap_cfg = {
	150	.reg_bits = 8,
	151	.val_bits = 8,
	152	.max_register = 0x16,
	153	.reg_defaults = ak4613_reg,
	154	.num_reg_defaults = ARRAY_SIZE(ak4613_reg),
dcd2d1f7	155	.cache_type = REGCACHE_RBTREE,
b0757062 KM	156	};
	157
	158	static const struct of_device_id ak4613_of_match[] = {
	159	{ .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg },
	160	{},
	161	};
	162	MODULE_DEVICE_TABLE(of, ak4613_of_match);
	163
	164	static const struct i2c_device_id ak4613_i2c_id[] = {
	165	{ "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
	166	{ }
	167	};
	168	MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
	169
	170	static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
	171
	172	/* Outputs */
	173	SND_SOC_DAPM_OUTPUT("LOUT1"),
	174	SND_SOC_DAPM_OUTPUT("LOUT2"),
	175	SND_SOC_DAPM_OUTPUT("LOUT3"),
	176	SND_SOC_DAPM_OUTPUT("LOUT4"),
	177	SND_SOC_DAPM_OUTPUT("LOUT5"),
	178	SND_SOC_DAPM_OUTPUT("LOUT6"),
	179
	180	SND_SOC_DAPM_OUTPUT("ROUT1"),
	181	SND_SOC_DAPM_OUTPUT("ROUT2"),
	182	SND_SOC_DAPM_OUTPUT("ROUT3"),
	183	SND_SOC_DAPM_OUTPUT("ROUT4"),
	184	SND_SOC_DAPM_OUTPUT("ROUT5"),
	185	SND_SOC_DAPM_OUTPUT("ROUT6"),
	186
	187	/* Inputs */
	188	SND_SOC_DAPM_INPUT("LIN1"),
	189	SND_SOC_DAPM_INPUT("LIN2"),
	190
	191	SND_SOC_DAPM_INPUT("RIN1"),
	192	SND_SOC_DAPM_INPUT("RIN2"),
	193
	194	/* DAC */
	195	SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
	196	SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
	197	SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
	198	SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
	199	SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
	200	SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
	201
	202	/* ADC */
	203	SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
	204	SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
	205	};
	206
	207	static const struct snd_soc_dapm_route ak4613_intercon[] = {
	208	{"LOUT1", NULL, "DAC1"},
	209	{"LOUT2", NULL, "DAC2"},
	210	{"LOUT3", NULL, "DAC3"},
	211	{"LOUT4", NULL, "DAC4"},
	212	{"LOUT5", NULL, "DAC5"},
	213	{"LOUT6", NULL, "DAC6"},
	214
	215	{"ROUT1", NULL, "DAC1"},
	216	{"ROUT2", NULL, "DAC2"},
	217	{"ROUT3", NULL, "DAC3"},
	218	{"ROUT4", NULL, "DAC4"},
	219	{"ROUT5", NULL, "DAC5"},
220	{"ROUT6", NULL, "DAC6"},
221
222	{"DAC1", NULL, "Playback"},
223	{"DAC2", NULL, "Playback"},
224	{"DAC3", NULL, "Playback"},
225	{"DAC4", NULL, "Playback"},
226	{"DAC5", NULL, "Playback"},
227	{"DAC6", NULL, "Playback"},
228
229	{"Capture", NULL, "ADC1"},
230	{"Capture", NULL, "ADC2"},
231
232	{"ADC1", NULL, "LIN1"},
233	{"ADC2", NULL, "LIN2"},
234
235	{"ADC1", NULL, "RIN1"},
236	{"ADC2", NULL, "RIN2"},
237	};
238
239	static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
240	struct snd_soc_dai *dai)
241	{
9123ea9f KM	242	struct snd_soc_component *component = dai->component;
	243	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
	244	struct device *dev = component->dev;
b0757062 KM	245
	246	mutex_lock(&priv->lock);
	247	priv->cnt--;
	248	if (priv->cnt < 0) {
	249	dev_err(dev, "unexpected counter error\n");
	250	priv->cnt = 0;
	251	}
	252	if (!priv->cnt)
35299f17	253	priv->iface = NULL;
b0757062 KM	254	mutex_unlock(&priv->lock);
	255	}
	256
907cd880 KM	257	static void ak4613_hw_constraints(struct ak4613_priv *priv,
	258	struct snd_pcm_runtime *runtime)
	259	{
	260	static const unsigned int ak4613_rates[] = {
	261	32000,
	262	44100,
	263	48000,
	264	64000,
	265	88200,
	266	96000,
	267	176400,
	268	192000,
	269	};
	270	struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
	271	unsigned int fs;
	272	int i;
	273
	274	constraint->list = ak4613_rates;
	275	constraint->mask = 0;
	276	constraint->count = 0;
	277
	278	/*
	279	* Slave Mode
	280	* Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
	281	* Double: [64kHz, 96kHz] : 256fs
	282	* Quad : [128kHz,192kHz]: 128fs
	283	*
	284	* Master mode
	285	* Normal: [32kHz, 48kHz] : 256fs or 512fs
	286	* Double: [64kHz, 96kHz] : 256fs
	287	* Quad : [128kHz,192kHz]: 128fs
	288	*/
	289	for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
	290	/* minimum fs on each range */
	291	fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
	292
	293	if (priv->sysclk >= ak4613_rates[i] * fs)
	294	constraint->count = i + 1;
	295	}
	296
	297	snd_pcm_hw_constraint_list(runtime, 0,
	298	SNDRV_PCM_HW_PARAM_RATE, constraint);
	299	}
	300
41165298 RK	301	static int ak4613_dai_startup(struct snd_pcm_substream *substream,
	302	struct snd_soc_dai *dai)
	303	{
9123ea9f KM	304	struct snd_soc_component *component = dai->component;
9123ea9f KM	305	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
41165298 RK	306
	307	priv->cnt++;
	308
907cd880 KM	309	ak4613_hw_constraints(priv, substream->runtime);
	310
	311	return 0;
	312	}
	313
	314	static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
	315	int clk_id, unsigned int freq, int dir)
	316	{
9123ea9f KM	317	struct snd_soc_component *component = codec_dai->component;
9123ea9f KM	318	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
907cd880 KM	319
	320	priv->sysclk = freq;
	321
41165298 RK	322	return 0;
	323	}
	324
b0757062 KM	325	static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
b0757062 KM	326	{
9123ea9f KM	327	struct snd_soc_component *component = dai->component;
9123ea9f KM	328	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
b0757062 KM	329
	330	fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
	331
	332	switch (fmt) {
b0757062 KM	333	case SND_SOC_DAIFMT_LEFT_J:
	334	case SND_SOC_DAIFMT_I2S:
	335	priv->fmt = fmt;
b0757062 KM	336	break;
	337	default:
	338	return -EINVAL;
	339	}
	340
	341	return 0;
	342	}
	343
35299f17 KM	344	static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
	345	int is_play,
	346	unsigned int fmt, unsigned int width)
	347	{
	348	const struct ak4613_formats *fmts;
	349
	350	fmts = (is_play) ? &iface->playback : &iface->capture;
	351
	352	if (fmts->fmt != fmt)
	353	return false;
	354
ec185f95 KM	355	if (fmts->width != width)
ec185f95 KM	356	return false;
35299f17 KM	357
	358	return true;
	359	}
	360
b0757062 KM	361	static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
	362	struct snd_pcm_hw_params *params,
	363	struct snd_soc_dai *dai)
	364	{
9123ea9f KM	365	struct snd_soc_component *component = dai->component;
9123ea9f KM	366	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
35299f17	367	const struct ak4613_interface *iface;
9123ea9f	368	struct device *dev = component->dev;
b0757062 KM	369	unsigned int width = params_width(params);
	370	unsigned int fmt = priv->fmt;
	371	unsigned int rate;
	372	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
	373	int i, ret;
	374	u8 fmt_ctrl, ctrl2;
	375
	376	rate = params_rate(params);
	377	switch (rate) {
	378	case 32000:
	379	case 44100:
	380	case 48000:
	381	ctrl2 = DFS_NORMAL_SPEED;
	382	break;
a83ac486	383	case 64000:
b0757062 KM	384	case 88200:
	385	case 96000:
	386	ctrl2 = DFS_DOUBLE_SPEED;
	387	break;
	388	case 176400:
	389	case 192000:
	390	ctrl2 = DFS_QUAD_SPEED;
	391	break;
	392	default:
	393	return -EINVAL;
	394	}
03bbf9f5	395	priv->rate = rate;
b0757062 KM	396
	397	/*
	398	* FIXME
	399	*
	400	* It doesn't support TDM at this point
	401	*/
	402	fmt_ctrl = NO_FMT;
35299f17 KM	403	ret = -EINVAL;
35299f17 KM	404	iface = NULL;
b0757062	405
35299f17 KM	406	mutex_lock(&priv->lock);
	407	if (priv->iface) {
	408	if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
	409	iface = priv->iface;
	410	} else {
b5f2a487	411	for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
35299f17 KM	412	if (!ak4613_dai_fmt_matching(ak4613_iface + i,
	413	is_play,
	414	fmt, width))
b0757062	415	continue;
35299f17 KM	416	iface = ak4613_iface + i;
35299f17 KM	417	break;
b0757062	418	}
b0757062 KM	419	}
b0757062 KM	420
35299f17 KM	421	if ((priv->iface == NULL) \|\|
	422	(priv->iface == iface)) {
	423	priv->iface = iface;
b0757062 KM	424	ret = 0;
	425	}
	426	mutex_unlock(&priv->lock);
	427
	428	if (ret < 0)
	429	goto hw_params_end;
	430
35299f17 KM	431	fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
35299f17 KM	432
9123ea9f KM	433	snd_soc_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl);
9123ea9f KM	434	snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);
b0757062	435
9123ea9f KM	436	snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
9123ea9f KM	437	snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc);
a3af0c65	438
b0757062 KM	439	hw_params_end:
	440	if (ret < 0)
	441	dev_warn(dev, "unsupported data width/format combination\n");
	442
	443	return ret;
	444	}
	445
9123ea9f	446	static int ak4613_set_bias_level(struct snd_soc_component *component,
b0757062 KM	447	enum snd_soc_bias_level level)
	448	{
	449	u8 mgmt1 = 0;
	450
	451	switch (level) {
	452	case SND_SOC_BIAS_ON:
	453	mgmt1 \|= RSTN;
3e146b55	454	fallthrough;
b0757062 KM	455	case SND_SOC_BIAS_PREPARE:
b0757062 KM	456	mgmt1 \|= PMADC \| PMDAC;
3e146b55	457	fallthrough;
b0757062 KM	458	case SND_SOC_BIAS_STANDBY:
b0757062 KM	459	mgmt1 \|= PMVR;
3e146b55	460	fallthrough;
b0757062 KM	461	case SND_SOC_BIAS_OFF:
	462	default:
	463	break;
	464	}
	465
9123ea9f	466	snd_soc_component_write(component, PW_MGMT1, mgmt1);
b0757062 KM	467
	468	return 0;
	469	}
	470
03bbf9f5 KM	471	static void ak4613_dummy_write(struct work_struct *work)
	472	{
	473	struct ak4613_priv *priv = container_of(work,
	474	struct ak4613_priv,
	475	dummy_write_work);
	476	struct snd_soc_component *component = priv->component;
	477	unsigned int mgmt1;
	478	unsigned int mgmt3;
	479
	480	/*
	481	* PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
	482	*
	483	* Note
	484	*
	485	* To avoid extra delay, we want to avoid preemption here,
	486	* but we can't. Because it uses I2C access which is using IRQ
	487	* and sleep. Thus, delay might be more than 5 LR clocks
	488	* see also
	489	* ak4613_dai_trigger()
	490	*/
	491	udelay(5000000 / priv->rate);
	492
cf6e26c7 KM	493	mgmt1 = snd_soc_component_read(component, PW_MGMT1);
cf6e26c7 KM	494	mgmt3 = snd_soc_component_read(component, PW_MGMT3);
03bbf9f5 KM	495
	496	snd_soc_component_write(component, PW_MGMT1, mgmt1);
	497	snd_soc_component_write(component, PW_MGMT3, mgmt3);
	498	}
	499
	500	static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd,
	501	struct snd_soc_dai *dai)
	502	{
9123ea9f KM	503	struct snd_soc_component *component = dai->component;
9123ea9f KM	504	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
03bbf9f5 KM	505
	506	/*
	507	* FIXME
	508	*
	509	* PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
	510	* from Power Down Release. Otherwise, Playback volume will be 0dB.
	511	* To avoid complex multiple delay/dummy_write method from
	512	* ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...),
	513	* call it once here.
	514	*
	515	* But, unfortunately, we can't "write" here because here is atomic
	516	* context (It uses I2C access for writing).
	517	* Thus, use schedule_work() to switching to normal context
	518	* immediately.
	519	*
	520	* Note
	521	*
	522	* Calling ak4613_dummy_write() function might be delayed.
	523	* In such case, ak4613 volume might be temporarily 0dB when
	524	* beggining of playback.
	525	* see also
	526	* ak4613_dummy_write()
	527	*/
	528
	529	if ((cmd != SNDRV_PCM_TRIGGER_START) &&
	530	(cmd != SNDRV_PCM_TRIGGER_RESUME))
	531	return 0;
	532
	533	if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
	534	return 0;
	535
9123ea9f	536	priv->component = component;
03bbf9f5 KM	537	schedule_work(&priv->dummy_write_work);
	538
	539	return 0;
	540	}
	541
b0757062	542	static const struct snd_soc_dai_ops ak4613_dai_ops = {
41165298	543	.startup = ak4613_dai_startup,
b0757062	544	.shutdown = ak4613_dai_shutdown,
907cd880	545	.set_sysclk = ak4613_dai_set_sysclk,
b0757062	546	.set_fmt = ak4613_dai_set_fmt,
03bbf9f5	547	.trigger = ak4613_dai_trigger,
b0757062 KM	548	.hw_params = ak4613_dai_hw_params,
	549	};
	550
	551	#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 \|\
	552	SNDRV_PCM_RATE_44100 \|\
	553	SNDRV_PCM_RATE_48000 \|\
	554	SNDRV_PCM_RATE_64000 \|\
	555	SNDRV_PCM_RATE_88200 \|\
	556	SNDRV_PCM_RATE_96000 \|\
	557	SNDRV_PCM_RATE_176400 \|\
	558	SNDRV_PCM_RATE_192000)
ec185f95	559	#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE)
b0757062 KM	560
	561	static struct snd_soc_dai_driver ak4613_dai = {
	562	.name = "ak4613-hifi",
	563	.playback = {
	564	.stream_name = "Playback",
	565	.channels_min = 2,
	566	.channels_max = 2,
	567	.rates = AK4613_PCM_RATE,
	568	.formats = AK4613_PCM_FMTBIT,
	569	},
	570	.capture = {
	571	.stream_name = "Capture",
	572	.channels_min = 2,
	573	.channels_max = 2,
	574	.rates = AK4613_PCM_RATE,
	575	.formats = AK4613_PCM_FMTBIT,
	576	},
	577	.ops = &ak4613_dai_ops,
	578	.symmetric_rates = 1,
	579	};
	580
9123ea9f	581	static int ak4613_suspend(struct snd_soc_component *component)
b0757062	582	{
9123ea9f	583	struct regmap *regmap = dev_get_regmap(component->dev, NULL);
b0757062	584
f9ae17ba	585	regcache_cache_only(regmap, true);
b0757062	586	regcache_mark_dirty(regmap);
f9ae17ba GU	587	return 0;
	588	}
	589
9123ea9f	590	static int ak4613_resume(struct snd_soc_component *component)
f9ae17ba	591	{
9123ea9f	592	struct regmap *regmap = dev_get_regmap(component->dev, NULL);
f9ae17ba GU	593
f9ae17ba GU	594	regcache_cache_only(regmap, false);
b0757062 KM	595	return regcache_sync(regmap);
	596	}
	597
9123ea9f	598	static const struct snd_soc_component_driver soc_component_dev_ak4613 = {
f9ae17ba	599	.suspend = ak4613_suspend,
b0757062 KM	600	.resume = ak4613_resume,
b0757062 KM	601	.set_bias_level = ak4613_set_bias_level,
9123ea9f KM	602	.controls = ak4613_snd_controls,
	603	.num_controls = ARRAY_SIZE(ak4613_snd_controls),
	604	.dapm_widgets = ak4613_dapm_widgets,
	605	.num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
	606	.dapm_routes = ak4613_intercon,
	607	.num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
	608	.idle_bias_on = 1,
9123ea9f KM	609	.endianness = 1,
9123ea9f KM	610	.non_legacy_dai_naming = 1,
b0757062 KM	611	};
b0757062 KM	612
a3af0c65 KM	613	static void ak4613_parse_of(struct ak4613_priv *priv,
	614	struct device *dev)
	615	{
	616	struct device_node *np = dev->of_node;
	617	char prop[32];
	618	int i;
	619
	620	/* Input 1 - 2 */
	621	for (i = 0; i < 2; i++) {
5547ba61	622	snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
a3af0c65 KM	623	if (!of_get_property(np, prop, NULL))
	624	priv->ic \|= 1 << i;
	625	}
	626
	627	/* Output 1 - 6 */
	628	for (i = 0; i < 6; i++) {
5547ba61	629	snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
a3af0c65 KM	630	if (!of_get_property(np, prop, NULL))
	631	priv->oc \|= 1 << i;
	632	}
	633	}
	634
b0757062 KM	635	static int ak4613_i2c_probe(struct i2c_client *i2c,
	636	const struct i2c_device_id *id)
	637	{
	638	struct device *dev = &i2c->dev;
	639	struct device_node *np = dev->of_node;
	640	const struct regmap_config *regmap_cfg;
	641	struct regmap *regmap;
	642	struct ak4613_priv *priv;
	643
	644	regmap_cfg = NULL;
	645	if (np) {
	646	const struct of_device_id *of_id;
	647
	648	of_id = of_match_device(ak4613_of_match, dev);
	649	if (of_id)
	650	regmap_cfg = of_id->data;
	651	} else {
	652	regmap_cfg = (const struct regmap_config *)id->driver_data;
	653	}
	654
	655	if (!regmap_cfg)
	656	return -EINVAL;
	657
	658	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	659	if (!priv)
	660	return -ENOMEM;
	661
a3af0c65 KM	662	ak4613_parse_of(priv, dev);
a3af0c65 KM	663
35299f17	664	priv->iface = NULL;
b0757062	665	priv->cnt = 0;
907cd880	666	priv->sysclk = 0;
03bbf9f5	667	INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);
b0757062 KM	668
	669	mutex_init(&priv->lock);
	670
	671	i2c_set_clientdata(i2c, priv);
	672
	673	regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
	674	if (IS_ERR(regmap))
	675	return PTR_ERR(regmap);
	676
9123ea9f	677	return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613,
b0757062 KM	678	&ak4613_dai, 1);
	679	}
	680
	681	static int ak4613_i2c_remove(struct i2c_client *client)
	682	{
b0757062 KM	683	return 0;
	684	}
	685
	686	static struct i2c_driver ak4613_i2c_driver = {
	687	.driver = {
	688	.name = "ak4613-codec",
b0757062 KM	689	.of_match_table = ak4613_of_match,
	690	},
	691	.probe = ak4613_i2c_probe,
	692	.remove = ak4613_i2c_remove,
	693	.id_table = ak4613_i2c_id,
	694	};
	695
	696	module_i2c_driver(ak4613_i2c_driver);
	697
	698	MODULE_DESCRIPTION("Soc AK4613 driver");
	699	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
	700	MODULE_LICENSE("GPL v2");