[thirdparty/kernel/stable.git] / sound / soc / codecs / pcm1681.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * PCM1681 ASoC codec driver
 *
 * Copyright (c) StreamUnlimited GmbH 2013
 *	Marek Belisko <marek.belisko@streamunlimited.com>
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>

#define PCM1681_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE  |		\
			     SNDRV_PCM_FMTBIT_S24_LE)

#define PCM1681_PCM_RATES   (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | \
			     SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100  | \
			     SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200  | \
			     SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000)

#define PCM1681_SOFT_MUTE_ALL		0xff
#define PCM1681_DEEMPH_RATE_MASK	0x18
#define PCM1681_DEEMPH_MASK		0x01

#define PCM1681_ATT_CONTROL(X)	(X <= 6 ? X : X + 9) /* Attenuation level */
#define PCM1681_SOFT_MUTE	0x07	/* Soft mute control register */
#define PCM1681_DAC_CONTROL	0x08	/* DAC operation control */
#define PCM1681_FMT_CONTROL	0x09	/* Audio interface data format */
#define PCM1681_DEEMPH_CONTROL	0x0a	/* De-emphasis control */
#define PCM1681_ZERO_DETECT_STATUS	0x0e	/* Zero detect status reg */

static const struct reg_default pcm1681_reg_defaults[] = {
	{ 0x01,	0xff },
	{ 0x02,	0xff },
	{ 0x03,	0xff },
	{ 0x04,	0xff },
	{ 0x05,	0xff },
	{ 0x06,	0xff },
	{ 0x07,	0x00 },
	{ 0x08,	0x00 },
	{ 0x09,	0x06 },
	{ 0x0A,	0x00 },
	{ 0x0B,	0xff },
	{ 0x0C,	0x0f },
	{ 0x0D,	0x00 },
	{ 0x10,	0xff },
	{ 0x11,	0xff },
	{ 0x12,	0x00 },
	{ 0x13,	0x00 },
};

static bool pcm1681_accessible_reg(struct device *dev, unsigned int reg)
{
	return !((reg == 0x00) || (reg == 0x0f));
}

static bool pcm1681_writeable_reg(struct device *dev, unsigned int reg)
{
	return pcm1681_accessible_reg(dev, reg) &&
		(reg != PCM1681_ZERO_DETECT_STATUS);
}

struct pcm1681_private {
	struct regmap *regmap;
	unsigned int format;
	/* Current deemphasis status */
	unsigned int deemph;
	/* Current rate for deemphasis control */
	unsigned int rate;
};

static const int pcm1681_deemph[] = { 44100, 48000, 32000 };

static int pcm1681_set_deemph(struct snd_soc_component *component)
{
	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
	int i = 0, val = -1, enable = 0;

	if (priv->deemph) {
		for (i = 0; i < ARRAY_SIZE(pcm1681_deemph); i++) {
			if (pcm1681_deemph[i] == priv->rate) {
				val = i;
				break;
			}
		}
	}

	if (val != -1) {
		regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
				   PCM1681_DEEMPH_RATE_MASK, val << 3);
		enable = 1;
	} else {
		enable = 0;
	}

	/* enable/disable deemphasis functionality */
	return regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
					PCM1681_DEEMPH_MASK, enable);
}

static int pcm1681_get_deemph(struct snd_kcontrol *kcontrol,
			      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);

	ucontrol->value.integer.value[0] = priv->deemph;

	return 0;
}

static int pcm1681_put_deemph(struct snd_kcontrol *kcontrol,
			      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);

	priv->deemph = ucontrol->value.integer.value[0];

	return pcm1681_set_deemph(component);
}

static int pcm1681_set_dai_fmt(struct snd_soc_dai *codec_dai,
			      unsigned int format)
{
	struct snd_soc_component *component = codec_dai->component;
	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);

	/* The PCM1681 can only be slave to all clocks */
	if ((format & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
		dev_err(component->dev, "Invalid clocking mode\n");
		return -EINVAL;
	}

	priv->format = format;

	return 0;
}

static int pcm1681_digital_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_component *component = dai->component;
	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
	int val;

	if (mute)
		val = PCM1681_SOFT_MUTE_ALL;
	else
		val = 0;

	return regmap_write(priv->regmap, PCM1681_SOFT_MUTE, val);
}

static int pcm1681_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 pcm1681_private *priv = snd_soc_component_get_drvdata(component);
	int val = 0, ret;

	priv->rate = params_rate(params);

	switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_RIGHT_J:
		switch (params_width(params)) {
		case 24:
			val = 0;
			break;
		case 16:
			val = 3;
			break;
		default:
			return -EINVAL;
		}
		break;
	case SND_SOC_DAIFMT_I2S:
		val = 0x04;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		val = 0x05;
		break;
	default:
		dev_err(component->dev, "Invalid DAI format\n");
		return -EINVAL;
	}

	ret = regmap_update_bits(priv->regmap, PCM1681_FMT_CONTROL, 0x0f, val);
	if (ret < 0)
		return ret;

	return pcm1681_set_deemph(component);
}

static const struct snd_soc_dai_ops pcm1681_dai_ops = {
	.set_fmt	= pcm1681_set_dai_fmt,
	.hw_params	= pcm1681_hw_params,
	.digital_mute	= pcm1681_digital_mute,
};

static const struct snd_soc_dapm_widget pcm1681_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("VOUT1"),
SND_SOC_DAPM_OUTPUT("VOUT2"),
SND_SOC_DAPM_OUTPUT("VOUT3"),
SND_SOC_DAPM_OUTPUT("VOUT4"),
SND_SOC_DAPM_OUTPUT("VOUT5"),
SND_SOC_DAPM_OUTPUT("VOUT6"),
SND_SOC_DAPM_OUTPUT("VOUT7"),
SND_SOC_DAPM_OUTPUT("VOUT8"),
};

static const struct snd_soc_dapm_route pcm1681_dapm_routes[] = {
	{ "VOUT1", NULL, "Playback" },
	{ "VOUT2", NULL, "Playback" },
	{ "VOUT3", NULL, "Playback" },
	{ "VOUT4", NULL, "Playback" },
	{ "VOUT5", NULL, "Playback" },
	{ "VOUT6", NULL, "Playback" },
	{ "VOUT7", NULL, "Playback" },
	{ "VOUT8", NULL, "Playback" },
};

static const DECLARE_TLV_DB_SCALE(pcm1681_dac_tlv, -6350, 50, 1);

static const struct snd_kcontrol_new pcm1681_controls[] = {
	SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume",
			PCM1681_ATT_CONTROL(1), PCM1681_ATT_CONTROL(2), 0,
			0x7f, 0, pcm1681_dac_tlv),
	SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume",
			PCM1681_ATT_CONTROL(3), PCM1681_ATT_CONTROL(4), 0,
			0x7f, 0, pcm1681_dac_tlv),
	SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume",
			PCM1681_ATT_CONTROL(5), PCM1681_ATT_CONTROL(6), 0,
			0x7f, 0, pcm1681_dac_tlv),
	SOC_DOUBLE_R_TLV("Channel 7/8 Playback Volume",
			PCM1681_ATT_CONTROL(7), PCM1681_ATT_CONTROL(8), 0,
			0x7f, 0, pcm1681_dac_tlv),
	SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
			    pcm1681_get_deemph, pcm1681_put_deemph),
};

static struct snd_soc_dai_driver pcm1681_dai = {
	.name = "pcm1681-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 8,
		.rates = PCM1681_PCM_RATES,
		.formats = PCM1681_PCM_FORMATS,
	},
	.ops = &pcm1681_dai_ops,
};

#ifdef CONFIG_OF
static const struct of_device_id pcm1681_dt_ids[] = {
	{ .compatible = "ti,pcm1681", },
	{ }
};
MODULE_DEVICE_TABLE(of, pcm1681_dt_ids);
#endif

static const struct regmap_config pcm1681_regmap = {
	.reg_bits		= 8,
	.val_bits		= 8,
	.max_register		= 0x13,
	.reg_defaults		= pcm1681_reg_defaults,
	.num_reg_defaults	= ARRAY_SIZE(pcm1681_reg_defaults),
	.writeable_reg		= pcm1681_writeable_reg,
	.readable_reg		= pcm1681_accessible_reg,
};

static const struct snd_soc_component_driver soc_component_dev_pcm1681 = {
	.controls		= pcm1681_controls,
	.num_controls		= ARRAY_SIZE(pcm1681_controls),
	.dapm_widgets		= pcm1681_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(pcm1681_dapm_widgets),
	.dapm_routes		= pcm1681_dapm_routes,
	.num_dapm_routes	= ARRAY_SIZE(pcm1681_dapm_routes),
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static const struct i2c_device_id pcm1681_i2c_id[] = {
	{"pcm1681", 0},
	{}
};
MODULE_DEVICE_TABLE(i2c, pcm1681_i2c_id);

static int pcm1681_i2c_probe(struct i2c_client *client,
			      const struct i2c_device_id *id)
{
	int ret;
	struct pcm1681_private *priv;

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

	priv->regmap = devm_regmap_init_i2c(client, &pcm1681_regmap);
	if (IS_ERR(priv->regmap)) {
		ret = PTR_ERR(priv->regmap);
		dev_err(&client->dev, "Failed to create regmap: %d\n", ret);
		return ret;
	}

	i2c_set_clientdata(client, priv);

	return devm_snd_soc_register_component(&client->dev,
		&soc_component_dev_pcm1681,
		&pcm1681_dai, 1);
}

static struct i2c_driver pcm1681_i2c_driver = {
	.driver = {
		.name	= "pcm1681",
		.of_match_table = of_match_ptr(pcm1681_dt_ids),
	},
	.id_table	= pcm1681_i2c_id,
	.probe		= pcm1681_i2c_probe,
};

module_i2c_driver(pcm1681_i2c_driver);

MODULE_DESCRIPTION("Texas Instruments PCM1681 ALSA SoC Codec Driver");
MODULE_AUTHOR("Marek Belisko <marek.belisko@streamunlimited.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
c942fddf	1	// SPDX-License-Identifier: GPL-2.0-or-later
95169d08 MB	2	/*
	3	* PCM1681 ASoC codec driver
	4	*
	5	* Copyright (c) StreamUnlimited GmbH 2013
	6	* Marek Belisko <marek.belisko@streamunlimited.com>
95169d08 MB	7	*/
	8
	9	#include <linux/module.h>
	10	#include <linux/slab.h>
	11	#include <linux/delay.h>
	12	#include <linux/gpio.h>
	13	#include <linux/i2c.h>
	14	#include <linux/regmap.h>
193a4716	15	#include <linux/of.h>
95169d08 MB	16	#include <linux/of_device.h>
	17	#include <linux/of_gpio.h>
	18	#include <sound/pcm.h>
	19	#include <sound/pcm_params.h>
	20	#include <sound/soc.h>
	21	#include <sound/tlv.h>
	22
	23	#define PCM1681_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| \
	24	SNDRV_PCM_FMTBIT_S24_LE)
	25
	26	#define PCM1681_PCM_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000 \| \
	27	SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \| \
	28	SNDRV_PCM_RATE_48000 \| SNDRV_PCM_RATE_88200 \| \
	29	SNDRV_PCM_RATE_96000 \| SNDRV_PCM_RATE_192000)
	30
	31	#define PCM1681_SOFT_MUTE_ALL 0xff
	32	#define PCM1681_DEEMPH_RATE_MASK 0x18
	33	#define PCM1681_DEEMPH_MASK 0x01
	34
	35	#define PCM1681_ATT_CONTROL(X) (X <= 6 ? X : X + 9) /* Attenuation level */
	36	#define PCM1681_SOFT_MUTE 0x07 /* Soft mute control register */
	37	#define PCM1681_DAC_CONTROL 0x08 /* DAC operation control */
	38	#define PCM1681_FMT_CONTROL 0x09 /* Audio interface data format */
	39	#define PCM1681_DEEMPH_CONTROL 0x0a /* De-emphasis control */
	40	#define PCM1681_ZERO_DETECT_STATUS 0x0e /* Zero detect status reg */
	41
	42	static const struct reg_default pcm1681_reg_defaults[] = {
	43	{ 0x01, 0xff },
	44	{ 0x02, 0xff },
	45	{ 0x03, 0xff },
	46	{ 0x04, 0xff },
	47	{ 0x05, 0xff },
	48	{ 0x06, 0xff },
	49	{ 0x07, 0x00 },
	50	{ 0x08, 0x00 },
	51	{ 0x09, 0x06 },
	52	{ 0x0A, 0x00 },
	53	{ 0x0B, 0xff },
	54	{ 0x0C, 0x0f },
	55	{ 0x0D, 0x00 },
	56	{ 0x10, 0xff },
	57	{ 0x11, 0xff },
	58	{ 0x12, 0x00 },
	59	{ 0x13, 0x00 },
	60	};
	61
	62	static bool pcm1681_accessible_reg(struct device *dev, unsigned int reg)
	63	{
	64	return !((reg == 0x00) \|\| (reg == 0x0f));
	65	}
	66
a074ae0e	67	static bool pcm1681_writeable_reg(struct device *dev, unsigned int reg)
95169d08 MB	68	{
	69	return pcm1681_accessible_reg(dev, reg) &&
	70	(reg != PCM1681_ZERO_DETECT_STATUS);
	71	}
	72
	73	struct pcm1681_private {
	74	struct regmap *regmap;
	75	unsigned int format;
	76	/* Current deemphasis status */
	77	unsigned int deemph;
	78	/* Current rate for deemphasis control */
	79	unsigned int rate;
	80	};
	81
	82	static const int pcm1681_deemph[] = { 44100, 48000, 32000 };
	83
7dbbaa51	84	static int pcm1681_set_deemph(struct snd_soc_component *component)
95169d08	85	{
7dbbaa51	86	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
95169d08 MB	87	int i = 0, val = -1, enable = 0;
95169d08 MB	88
48f403be AL	89	if (priv->deemph) {
	90	for (i = 0; i < ARRAY_SIZE(pcm1681_deemph); i++) {
	91	if (pcm1681_deemph[i] == priv->rate) {
95169d08	92	val = i;
48f403be AL	93	break;
	94	}
	95	}
	96	}
95169d08 MB	97
	98	if (val != -1) {
	99	regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
fa8173a3	100	PCM1681_DEEMPH_RATE_MASK, val << 3);
95169d08	101	enable = 1;
48f403be	102	} else {
95169d08	103	enable = 0;
48f403be	104	}
95169d08 MB	105
	106	/* enable/disable deemphasis functionality */
	107	return regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
	108	PCM1681_DEEMPH_MASK, enable);
	109	}
	110
	111	static int pcm1681_get_deemph(struct snd_kcontrol *kcontrol,
	112	struct snd_ctl_elem_value *ucontrol)
	113	{
7dbbaa51 KM	114	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
7dbbaa51 KM	115	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
95169d08	116
d7f58db4	117	ucontrol->value.integer.value[0] = priv->deemph;
95169d08 MB	118
	119	return 0;
	120	}
	121
	122	static int pcm1681_put_deemph(struct snd_kcontrol *kcontrol,
	123	struct snd_ctl_elem_value *ucontrol)
	124	{
7dbbaa51 KM	125	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
7dbbaa51 KM	126	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
95169d08	127
d7f58db4	128	priv->deemph = ucontrol->value.integer.value[0];
95169d08	129
7dbbaa51	130	return pcm1681_set_deemph(component);
95169d08 MB	131	}
	132
	133	static int pcm1681_set_dai_fmt(struct snd_soc_dai *codec_dai,
	134	unsigned int format)
	135	{
7dbbaa51 KM	136	struct snd_soc_component *component = codec_dai->component;
7dbbaa51 KM	137	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
95169d08 MB	138
	139	/* The PCM1681 can only be slave to all clocks */
	140	if ((format & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
7dbbaa51	141	dev_err(component->dev, "Invalid clocking mode\n");
95169d08 MB	142	return -EINVAL;
	143	}
	144
	145	priv->format = format;
	146
	147	return 0;
	148	}
	149
	150	static int pcm1681_digital_mute(struct snd_soc_dai *dai, int mute)
	151	{
7dbbaa51 KM	152	struct snd_soc_component *component = dai->component;
7dbbaa51 KM	153	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
95169d08 MB	154	int val;
	155
	156	if (mute)
	157	val = PCM1681_SOFT_MUTE_ALL;
	158	else
	159	val = 0;
	160
	161	return regmap_write(priv->regmap, PCM1681_SOFT_MUTE, val);
	162	}
	163
	164	static int pcm1681_hw_params(struct snd_pcm_substream *substream,
	165	struct snd_pcm_hw_params *params,
	166	struct snd_soc_dai *dai)
	167	{
7dbbaa51 KM	168	struct snd_soc_component *component = dai->component;
7dbbaa51 KM	169	struct pcm1681_private *priv = snd_soc_component_get_drvdata(component);
95169d08	170	int val = 0, ret;
95169d08 MB	171
	172	priv->rate = params_rate(params);
	173
	174	switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
	175	case SND_SOC_DAIFMT_RIGHT_J:
50a68fb4 MB	176	switch (params_width(params)) {
	177	case 24:
	178	val = 0;
	179	break;
	180	case 16:
	181	val = 3;
	182	break;
	183	default:
	184	return -EINVAL;
	185	}
95169d08 MB	186	break;
	187	case SND_SOC_DAIFMT_I2S:
	188	val = 0x04;
	189	break;
	190	case SND_SOC_DAIFMT_LEFT_J:
	191	val = 0x05;
	192	break;
	193	default:
7dbbaa51	194	dev_err(component->dev, "Invalid DAI format\n");
95169d08 MB	195	return -EINVAL;
	196	}
	197
	198	ret = regmap_update_bits(priv->regmap, PCM1681_FMT_CONTROL, 0x0f, val);
	199	if (ret < 0)
	200	return ret;
	201
7dbbaa51	202	return pcm1681_set_deemph(component);
95169d08 MB	203	}
	204
	205	static const struct snd_soc_dai_ops pcm1681_dai_ops = {
	206	.set_fmt = pcm1681_set_dai_fmt,
	207	.hw_params = pcm1681_hw_params,
	208	.digital_mute = pcm1681_digital_mute,
	209	};
	210
b9281f99 MB	211	static const struct snd_soc_dapm_widget pcm1681_dapm_widgets[] = {
	212	SND_SOC_DAPM_OUTPUT("VOUT1"),
	213	SND_SOC_DAPM_OUTPUT("VOUT2"),
	214	SND_SOC_DAPM_OUTPUT("VOUT3"),
	215	SND_SOC_DAPM_OUTPUT("VOUT4"),
	216	SND_SOC_DAPM_OUTPUT("VOUT5"),
	217	SND_SOC_DAPM_OUTPUT("VOUT6"),
	218	SND_SOC_DAPM_OUTPUT("VOUT7"),
	219	SND_SOC_DAPM_OUTPUT("VOUT8"),
	220	};
	221
	222	static const struct snd_soc_dapm_route pcm1681_dapm_routes[] = {
	223	{ "VOUT1", NULL, "Playback" },
	224	{ "VOUT2", NULL, "Playback" },
	225	{ "VOUT3", NULL, "Playback" },
	226	{ "VOUT4", NULL, "Playback" },
	227	{ "VOUT5", NULL, "Playback" },
	228	{ "VOUT6", NULL, "Playback" },
	229	{ "VOUT7", NULL, "Playback" },
	230	{ "VOUT8", NULL, "Playback" },
	231	};
	232
95169d08 MB	233	static const DECLARE_TLV_DB_SCALE(pcm1681_dac_tlv, -6350, 50, 1);
	234
	235	static const struct snd_kcontrol_new pcm1681_controls[] = {
	236	SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume",
	237	PCM1681_ATT_CONTROL(1), PCM1681_ATT_CONTROL(2), 0,
	238	0x7f, 0, pcm1681_dac_tlv),
	239	SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume",
	240	PCM1681_ATT_CONTROL(3), PCM1681_ATT_CONTROL(4), 0,
	241	0x7f, 0, pcm1681_dac_tlv),
	242	SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume",
	243	PCM1681_ATT_CONTROL(5), PCM1681_ATT_CONTROL(6), 0,
	244	0x7f, 0, pcm1681_dac_tlv),
	245	SOC_DOUBLE_R_TLV("Channel 7/8 Playback Volume",
	246	PCM1681_ATT_CONTROL(7), PCM1681_ATT_CONTROL(8), 0,
	247	0x7f, 0, pcm1681_dac_tlv),
	248	SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
	249	pcm1681_get_deemph, pcm1681_put_deemph),
	250	};
	251
16695971	252	static struct snd_soc_dai_driver pcm1681_dai = {
95169d08 MB	253	.name = "pcm1681-hifi",
	254	.playback = {
	255	.stream_name = "Playback",
	256	.channels_min = 2,
	257	.channels_max = 8,
	258	.rates = PCM1681_PCM_RATES,
	259	.formats = PCM1681_PCM_FORMATS,
	260	},
	261	.ops = &pcm1681_dai_ops,
	262	};
	263
	264	#ifdef CONFIG_OF
	265	static const struct of_device_id pcm1681_dt_ids[] = {
	266	{ .compatible = "ti,pcm1681", },
	267	{ }
	268	};
	269	MODULE_DEVICE_TABLE(of, pcm1681_dt_ids);
	270	#endif
	271
	272	static const struct regmap_config pcm1681_regmap = {
	273	.reg_bits = 8,
	274	.val_bits = 8,
64256ac6	275	.max_register = 0x13,
95169d08 MB	276	.reg_defaults = pcm1681_reg_defaults,
	277	.num_reg_defaults = ARRAY_SIZE(pcm1681_reg_defaults),
	278	.writeable_reg = pcm1681_writeable_reg,
	279	.readable_reg = pcm1681_accessible_reg,
	280	};
	281
7dbbaa51 KM	282	static const struct snd_soc_component_driver soc_component_dev_pcm1681 = {
	283	.controls = pcm1681_controls,
	284	.num_controls = ARRAY_SIZE(pcm1681_controls),
	285	.dapm_widgets = pcm1681_dapm_widgets,
	286	.num_dapm_widgets = ARRAY_SIZE(pcm1681_dapm_widgets),
	287	.dapm_routes = pcm1681_dapm_routes,
	288	.num_dapm_routes = ARRAY_SIZE(pcm1681_dapm_routes),
	289	.idle_bias_on = 1,
	290	.use_pmdown_time = 1,
	291	.endianness = 1,
	292	.non_legacy_dai_naming = 1,
95169d08 MB	293	};
	294
	295	static const struct i2c_device_id pcm1681_i2c_id[] = {
	296	{"pcm1681", 0},
	297	{}
	298	};
	299	MODULE_DEVICE_TABLE(i2c, pcm1681_i2c_id);
	300
	301	static int pcm1681_i2c_probe(struct i2c_client *client,
	302	const struct i2c_device_id *id)
	303	{
	304	int ret;
	305	struct pcm1681_private *priv;
	306
	307	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
	308	if (!priv)
	309	return -ENOMEM;
	310
	311	priv->regmap = devm_regmap_init_i2c(client, &pcm1681_regmap);
	312	if (IS_ERR(priv->regmap)) {
	313	ret = PTR_ERR(priv->regmap);
	314	dev_err(&client->dev, "Failed to create regmap: %d\n", ret);
	315	return ret;
	316	}
	317
	318	i2c_set_clientdata(client, priv);
	319
7dbbaa51 KM	320	return devm_snd_soc_register_component(&client->dev,
7dbbaa51 KM	321	&soc_component_dev_pcm1681,
95169d08 MB	322	&pcm1681_dai, 1);
	323	}
	324
95169d08 MB	325	static struct i2c_driver pcm1681_i2c_driver = {
	326	.driver = {
	327	.name = "pcm1681",
95169d08 MB	328	.of_match_table = of_match_ptr(pcm1681_dt_ids),
	329	},
	330	.id_table = pcm1681_i2c_id,
	331	.probe = pcm1681_i2c_probe,
95169d08 MB	332	};
	333
	334	module_i2c_driver(pcm1681_i2c_driver);
	335
	336	MODULE_DESCRIPTION("Texas Instruments PCM1681 ALSA SoC Codec Driver");
	337	MODULE_AUTHOR("Marek Belisko <marek.belisko@streamunlimited.com>");
	338	MODULE_LICENSE("GPL");