[deliverable/linux.git] / sound / soc / codecs / cs4349.c

/*
 * cs4349.c  --  CS4349 ALSA Soc Audio driver
 *
 * Copyright 2015 Cirrus Logic, Inc.
 *
 * Authors: Tim Howe <Tim.Howe@cirrus.com>
 *
 * 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/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "cs4349.h"


static const struct reg_default cs4349_reg_defaults[] = {
	{ 2, 0x00 },	/* r02	- Mode Control */
	{ 3, 0x09 },	/* r03	- Volume, Mixing and Inversion Control */
	{ 4, 0x81 },	/* r04	- Mute Control */
	{ 5, 0x00 },	/* r05	- Channel A Volume Control */
	{ 6, 0x00 },	/* r06	- Channel B Volume Control */
	{ 7, 0xB1 },	/* r07	- Ramp and Filter Control */
	{ 8, 0x1C },	/* r08	- Misc. Control */
};

/* Private data for the CS4349 */
struct  cs4349_private {
	struct regmap			*regmap;
	struct gpio_desc		*reset_gpio;
	unsigned int			mode;
	int				rate;
};

static bool cs4349_readable_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case CS4349_CHIPID ... CS4349_MISC:
		return true;
	default:
		return false;
	}
}

static bool cs4349_writeable_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case CS4349_MODE ...  CS4349_MISC:
		return true;
	default:
		return false;
	}
}

static int cs4349_set_dai_fmt(struct snd_soc_dai *codec_dai,
			      unsigned int format)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
	unsigned int fmt;

	fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;

	switch (fmt) {
	case SND_SOC_DAIFMT_I2S:
	case SND_SOC_DAIFMT_LEFT_J:
	case SND_SOC_DAIFMT_RIGHT_J:
		cs4349->mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int cs4349_pcm_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 cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
	int fmt, ret;

	cs4349->rate = params_rate(params);

	switch (cs4349->mode) {
	case SND_SOC_DAIFMT_I2S:
		fmt = DIF_I2S;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		fmt = DIF_LEFT_JST;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		switch (params_width(params)) {
		case 16:
			fmt = DIF_RGHT_JST16;
			break;
		case 24:
			fmt = DIF_RGHT_JST24;
			break;
		default:
			return -EINVAL;
		}
		break;
	default:
		return -EINVAL;
	}

	ret = snd_soc_update_bits(codec, CS4349_MODE, DIF_MASK,
				  MODE_FORMAT(fmt));
	if (ret < 0)
		return ret;

	return 0;
}

static int cs4349_digital_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	int reg;

	reg = 0;
	if (mute)
		reg = MUTE_AB_MASK;

	return snd_soc_update_bits(codec, CS4349_MUTE, MUTE_AB_MASK, reg);
}

static DECLARE_TLV_DB_SCALE(dig_tlv, -12750, 50, 0);

static const char * const chan_mix_texts[] = {
	"Mute", "MuteA", "MuteA SwapB", "MuteA MonoB", "SwapA MuteB",
	"BothR", "Swap", "SwapA MonoB", "MuteB", "Normal", "BothL",
	"MonoB", "MonoA MuteB", "MonoA", "MonoA SwapB", "Mono",
	/*Normal == Channel A = Left, Channel B = Right*/
};

static const char * const fm_texts[] = {
	"Auto", "Single", "Double", "Quad",
};

static const char * const deemph_texts[] = {
	"None", "44.1k", "48k", "32k",
};

static const char * const softr_zeroc_texts[] = {
	"Immediate", "Zero Cross", "Soft Ramp", "SR on ZC",
};

static int deemph_values[] = {
	0, 4, 8, 12,
};

static int softr_zeroc_values[] = {
	0, 64, 128, 192,
};

static const struct soc_enum chan_mix_enum =
	SOC_ENUM_SINGLE(CS4349_VMI, 0,
			ARRAY_SIZE(chan_mix_texts),
			chan_mix_texts);

static const struct soc_enum fm_mode_enum =
	SOC_ENUM_SINGLE(CS4349_MODE, 0,
			ARRAY_SIZE(fm_texts),
			fm_texts);

static SOC_VALUE_ENUM_SINGLE_DECL(deemph_enum, CS4349_MODE, 0, DEM_MASK,
				deemph_texts, deemph_values);

static SOC_VALUE_ENUM_SINGLE_DECL(softr_zeroc_enum, CS4349_RMPFLT, 0,
				SR_ZC_MASK, softr_zeroc_texts,
				softr_zeroc_values);

static const struct snd_kcontrol_new cs4349_snd_controls[] = {
	SOC_DOUBLE_R_TLV("Master Playback Volume",
			 CS4349_VOLA, CS4349_VOLB, 0, 0xFF, 1, dig_tlv),
	SOC_ENUM("Functional Mode", fm_mode_enum),
	SOC_ENUM("De-Emphasis Control", deemph_enum),
	SOC_ENUM("Soft Ramp Zero Cross Control", softr_zeroc_enum),
	SOC_ENUM("Channel Mixer", chan_mix_enum),
	SOC_SINGLE("VolA = VolB Switch", CS4349_VMI, 7, 1, 0),
	SOC_SINGLE("InvertA Switch", CS4349_VMI, 6, 1, 0),
	SOC_SINGLE("InvertB Switch", CS4349_VMI, 5, 1, 0),
	SOC_SINGLE("Auto-Mute Switch", CS4349_MUTE, 7, 1, 0),
	SOC_SINGLE("MUTEC A = B Switch", CS4349_MUTE, 5, 1, 0),
	SOC_SINGLE("Soft Ramp Up Switch", CS4349_RMPFLT, 5, 1, 0),
	SOC_SINGLE("Soft Ramp Down Switch", CS4349_RMPFLT, 4, 1, 0),
	SOC_SINGLE("Slow Roll Off Filter Switch", CS4349_RMPFLT, 2, 1, 0),
	SOC_SINGLE("Freeze Switch", CS4349_MISC, 5, 1, 0),
	SOC_SINGLE("Popguard Switch", CS4349_MISC, 4, 1, 0),
};

static const struct snd_soc_dapm_widget cs4349_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("HiFi DAC", NULL, SND_SOC_NOPM, 0, 0),

	SND_SOC_DAPM_OUTPUT("OutputA"),
	SND_SOC_DAPM_OUTPUT("OutputB"),
};

static const struct snd_soc_dapm_route cs4349_routes[] = {
	{"DAC Playback", NULL, "OutputA"},
	{"DAC Playback", NULL, "OutputB"},

	{"OutputA", NULL, "HiFi DAC"},
	{"OutputB", NULL, "HiFi DAC"},
};

#define CS4349_PCM_FORMATS (SNDRV_PCM_FMTBIT_S8  | \
			SNDRV_PCM_FMTBIT_S16_LE  | SNDRV_PCM_FMTBIT_S16_BE  | \
			SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
			SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \
			SNDRV_PCM_FMTBIT_S24_LE  | SNDRV_PCM_FMTBIT_S24_BE  | \
			SNDRV_PCM_FMTBIT_S32_LE)

#define CS4349_PCM_RATES SNDRV_PCM_RATE_8000_192000

static const struct snd_soc_dai_ops cs4349_dai_ops = {
	.hw_params	= cs4349_pcm_hw_params,
	.set_fmt	= cs4349_set_dai_fmt,
	.digital_mute	= cs4349_digital_mute,
};

static struct snd_soc_dai_driver cs4349_dai = {
	.name = "cs4349_hifi",
	.playback = {
		.stream_name	= "DAC Playback",
		.channels_min	= 1,
		.channels_max	= 2,
		.rates		= CS4349_PCM_RATES,
		.formats	= CS4349_PCM_FORMATS,
	},
	.ops = &cs4349_dai_ops,
	.symmetric_rates = 1,
};

static struct snd_soc_codec_driver soc_codec_dev_cs4349 = {
	.controls		= cs4349_snd_controls,
	.num_controls		= ARRAY_SIZE(cs4349_snd_controls),

	.dapm_widgets		= cs4349_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(cs4349_dapm_widgets),
	.dapm_routes		= cs4349_routes,
	.num_dapm_routes	= ARRAY_SIZE(cs4349_routes),
};

static const struct regmap_config cs4349_regmap = {
	.reg_bits		= 8,
	.val_bits		= 8,

	.max_register		= CS4349_MISC,
	.reg_defaults		= cs4349_reg_defaults,
	.num_reg_defaults	= ARRAY_SIZE(cs4349_reg_defaults),
	.readable_reg		= cs4349_readable_register,
	.writeable_reg		= cs4349_writeable_register,
	.cache_type		= REGCACHE_RBTREE,
};

static int cs4349_i2c_probe(struct i2c_client *client,
				      const struct i2c_device_id *id)
{
	struct cs4349_private *cs4349;
	int ret;

	cs4349 = devm_kzalloc(&client->dev, sizeof(*cs4349), GFP_KERNEL);
	if (!cs4349)
		return -ENOMEM;

	cs4349->regmap = devm_regmap_init_i2c(client, &cs4349_regmap);
	if (IS_ERR(cs4349->regmap)) {
		ret = PTR_ERR(cs4349->regmap);
		dev_err(&client->dev, "regmap_init() failed: %d\n", ret);
		return ret;
	}

	/* Reset the Device */
	cs4349->reset_gpio = devm_gpiod_get_optional(&client->dev,
		"reset", GPIOD_OUT_LOW);
	if (IS_ERR(cs4349->reset_gpio))
		return PTR_ERR(cs4349->reset_gpio);

	if (cs4349->reset_gpio)
		gpiod_set_value_cansleep(cs4349->reset_gpio, 1);

	i2c_set_clientdata(client, cs4349);

	return snd_soc_register_codec(&client->dev, &soc_codec_dev_cs4349,
		&cs4349_dai, 1);
}

static int cs4349_i2c_remove(struct i2c_client *client)
{
	struct cs4349_private *cs4349 = i2c_get_clientdata(client);

	snd_soc_unregister_codec(&client->dev);

	/* Hold down reset */
	if (cs4349->reset_gpio)
		gpiod_set_value_cansleep(cs4349->reset_gpio, 0);

	return 0;
}

#ifdef CONFIG_PM
static int cs4349_runtime_suspend(struct device *dev)
{
	struct cs4349_private *cs4349 = dev_get_drvdata(dev);
	int ret;

	ret = regmap_update_bits(cs4349->regmap, CS4349_MISC, PWR_DWN, 1);
	if (ret < 0)
		return ret;

	regcache_cache_only(cs4349->regmap, true);

	/* Hold down reset */
	if (cs4349->reset_gpio)
		gpiod_set_value_cansleep(cs4349->reset_gpio, 0);

	return 0;
}

static int cs4349_runtime_resume(struct device *dev)
{
	struct cs4349_private *cs4349 = dev_get_drvdata(dev);
	int ret;

	ret = regmap_update_bits(cs4349->regmap, CS4349_MISC, PWR_DWN, 0);
	if (ret < 0)
		return ret;

	if (cs4349->reset_gpio)
		gpiod_set_value_cansleep(cs4349->reset_gpio, 1);

	regcache_cache_only(cs4349->regmap, false);
	regcache_sync(cs4349->regmap);

	return 0;
}
#endif

static const struct dev_pm_ops cs4349_runtime_pm = {
	SET_RUNTIME_PM_OPS(cs4349_runtime_suspend, cs4349_runtime_resume,
			   NULL)
};

static const struct of_device_id cs4349_of_match[] = {
	{ .compatible = "cirrus,cs4349", },
	{},
};

MODULE_DEVICE_TABLE(of, cs4349_of_match);

static const struct i2c_device_id cs4349_i2c_id[] = {
	{"cs4349", 0},
	{}
};

MODULE_DEVICE_TABLE(i2c, cs4349_i2c_id);

static struct i2c_driver cs4349_i2c_driver = {
	.driver = {
		.name		= "cs4349",
		.owner		= THIS_MODULE,
		.of_match_table	= cs4349_of_match,
	},
	.id_table	= cs4349_i2c_id,
	.probe		= cs4349_i2c_probe,
	.remove		= cs4349_i2c_remove,
};

module_i2c_driver(cs4349_i2c_driver);

MODULE_AUTHOR("Tim Howe <tim.howe@cirrus.com>");
MODULE_DESCRIPTION("Cirrus Logic CS4349 ALSA SoC Codec Driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
e40da86a TH	1	/*
	2	* cs4349.c -- CS4349 ALSA Soc Audio driver
	3	*
	4	* Copyright 2015 Cirrus Logic, Inc.
	5	*
	6	* Authors: Tim Howe <Tim.Howe@cirrus.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12
	13	#include <linux/module.h>
	14	#include <linux/moduleparam.h>
	15	#include <linux/kernel.h>
	16	#include <linux/init.h>
	17	#include <linux/delay.h>
	18	#include <linux/gpio.h>
	19	#include <linux/platform_device.h>
	20	#include <linux/pm.h>
	21	#include <linux/i2c.h>
	22	#include <linux/of_device.h>
	23	#include <linux/regmap.h>
	24	#include <linux/slab.h>
	25	#include <sound/core.h>
	26	#include <sound/pcm.h>
	27	#include <sound/pcm_params.h>
	28	#include <sound/soc.h>
	29	#include <sound/soc-dapm.h>
	30	#include <sound/initval.h>
	31	#include <sound/tlv.h>
	32	#include "cs4349.h"
	33
	34
	35	static const struct reg_default cs4349_reg_defaults[] = {
	36	{ 2, 0x00 }, /* r02 - Mode Control */
	37	{ 3, 0x09 }, /* r03 - Volume, Mixing and Inversion Control */
	38	{ 4, 0x81 }, /* r04 - Mute Control */
	39	{ 5, 0x00 }, /* r05 - Channel A Volume Control */
	40	{ 6, 0x00 }, /* r06 - Channel B Volume Control */
	41	{ 7, 0xB1 }, /* r07 - Ramp and Filter Control */
	42	{ 8, 0x1C }, /* r08 - Misc. Control */
	43	};
	44
	45	/* Private data for the CS4349 */
	46	struct cs4349_private {
	47	struct regmap *regmap;
e40da86a TH	48	struct gpio_desc *reset_gpio;
	49	unsigned int mode;
	50	int rate;
	51	};
	52
	53	static bool cs4349_readable_register(struct device *dev, unsigned int reg)
	54	{
	55	switch (reg) {
0443de7e AL	56	case CS4349_CHIPID ... CS4349_MISC:
	57	return true;
	58	default:
	59	return false;
	60	}
	61	}
	62
	63	static bool cs4349_writeable_register(struct device *dev, unsigned int reg)
	64	{
	65	switch (reg) {
	66	case CS4349_MODE ... CS4349_MISC:
e40da86a TH	67	return true;
	68	default:
	69	return false;
	70	}
	71	}
	72
	73	static int cs4349_set_dai_fmt(struct snd_soc_dai *codec_dai,
	74	unsigned int format)
	75	{
	76	struct snd_soc_codec *codec = codec_dai->codec;
	77	struct cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
	78	unsigned int fmt;
	79
	80	fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;
	81
	82	switch (fmt) {
	83	case SND_SOC_DAIFMT_I2S:
	84	case SND_SOC_DAIFMT_LEFT_J:
	85	case SND_SOC_DAIFMT_RIGHT_J:
	86	cs4349->mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
	87	break;
	88	default:
	89	return -EINVAL;
	90	}
	91
	92	return 0;
	93	}
	94
	95	static int cs4349_pcm_hw_params(struct snd_pcm_substream *substream,
	96	struct snd_pcm_hw_params *params,
	97	struct snd_soc_dai *dai)
	98	{
dedae86d	99	struct snd_soc_codec *codec = dai->codec;
e40da86a	100	struct cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
da304ac3	101	int fmt, ret;
e40da86a	102
e40da86a TH	103	cs4349->rate = params_rate(params);
	104
	105	switch (cs4349->mode) {
	106	case SND_SOC_DAIFMT_I2S:
da304ac3	107	fmt = DIF_I2S;
e40da86a TH	108	break;
e40da86a TH	109	case SND_SOC_DAIFMT_LEFT_J:
da304ac3	110	fmt = DIF_LEFT_JST;
e40da86a TH	111	break;
	112	case SND_SOC_DAIFMT_RIGHT_J:
	113	switch (params_width(params)) {
	114	case 16:
	115	fmt = DIF_RGHT_JST16;
	116	break;
	117	case 24:
	118	fmt = DIF_RGHT_JST24;
	119	break;
	120	default:
	121	return -EINVAL;
	122	}
e40da86a TH	123	break;
	124	default:
	125	return -EINVAL;
	126	}
	127
da304ac3 AL	128	ret = snd_soc_update_bits(codec, CS4349_MODE, DIF_MASK,
da304ac3 AL	129	MODE_FORMAT(fmt));
e40da86a TH	130	if (ret < 0)
	131	return ret;
	132
	133	return 0;
	134	}
	135
	136	static int cs4349_digital_mute(struct snd_soc_dai *dai, int mute)
	137	{
	138	struct snd_soc_codec *codec = dai->codec;
	139	int reg;
	140
	141	reg = 0;
	142	if (mute)
	143	reg = MUTE_AB_MASK;
	144
	145	return snd_soc_update_bits(codec, CS4349_MUTE, MUTE_AB_MASK, reg);
	146	}
	147
	148	static DECLARE_TLV_DB_SCALE(dig_tlv, -12750, 50, 0);
	149
	150	static const char * const chan_mix_texts[] = {
	151	"Mute", "MuteA", "MuteA SwapB", "MuteA MonoB", "SwapA MuteB",
	152	"BothR", "Swap", "SwapA MonoB", "MuteB", "Normal", "BothL",
	153	"MonoB", "MonoA MuteB", "MonoA", "MonoA SwapB", "Mono",
	154	/Normal == Channel A = Left, Channel B = Right/
	155	};
	156
	157	static const char * const fm_texts[] = {
	158	"Auto", "Single", "Double", "Quad",
	159	};
	160
	161	static const char * const deemph_texts[] = {
	162	"None", "44.1k", "48k", "32k",
	163	};
	164
	165	static const char * const softr_zeroc_texts[] = {
	166	"Immediate", "Zero Cross", "Soft Ramp", "SR on ZC",
	167	};
	168
	169	static int deemph_values[] = {
	170	0, 4, 8, 12,
	171	};
	172
	173	static int softr_zeroc_values[] = {
	174	0, 64, 128, 192,
	175	};
	176
	177	static const struct soc_enum chan_mix_enum =
	178	SOC_ENUM_SINGLE(CS4349_VMI, 0,
	179	ARRAY_SIZE(chan_mix_texts),
	180	chan_mix_texts);
	181
	182	static const struct soc_enum fm_mode_enum =
	183	SOC_ENUM_SINGLE(CS4349_MODE, 0,
	184	ARRAY_SIZE(fm_texts),
	185	fm_texts);
	186
	187	static SOC_VALUE_ENUM_SINGLE_DECL(deemph_enum, CS4349_MODE, 0, DEM_MASK,
	188	deemph_texts, deemph_values);
	189
	190	static SOC_VALUE_ENUM_SINGLE_DECL(softr_zeroc_enum, CS4349_RMPFLT, 0,
	191	SR_ZC_MASK, softr_zeroc_texts,
	192	softr_zeroc_values);
	193
194	static const struct snd_kcontrol_new cs4349_snd_controls[] = {
195	SOC_DOUBLE_R_TLV("Master Playback Volume",
196	CS4349_VOLA, CS4349_VOLB, 0, 0xFF, 1, dig_tlv),
197	SOC_ENUM("Functional Mode", fm_mode_enum),
198	SOC_ENUM("De-Emphasis Control", deemph_enum),
199	SOC_ENUM("Soft Ramp Zero Cross Control", softr_zeroc_enum),
200	SOC_ENUM("Channel Mixer", chan_mix_enum),
201	SOC_SINGLE("VolA = VolB Switch", CS4349_VMI, 7, 1, 0),
202	SOC_SINGLE("InvertA Switch", CS4349_VMI, 6, 1, 0),
203	SOC_SINGLE("InvertB Switch", CS4349_VMI, 5, 1, 0),
204	SOC_SINGLE("Auto-Mute Switch", CS4349_MUTE, 7, 1, 0),
205	SOC_SINGLE("MUTEC A = B Switch", CS4349_MUTE, 5, 1, 0),
206	SOC_SINGLE("Soft Ramp Up Switch", CS4349_RMPFLT, 5, 1, 0),
207	SOC_SINGLE("Soft Ramp Down Switch", CS4349_RMPFLT, 4, 1, 0),
208	SOC_SINGLE("Slow Roll Off Filter Switch", CS4349_RMPFLT, 2, 1, 0),
209	SOC_SINGLE("Freeze Switch", CS4349_MISC, 5, 1, 0),
210	SOC_SINGLE("Popguard Switch", CS4349_MISC, 4, 1, 0),
211	};
212
213	static const struct snd_soc_dapm_widget cs4349_dapm_widgets[] = {
214	SND_SOC_DAPM_DAC("HiFi DAC", NULL, SND_SOC_NOPM, 0, 0),
215
216	SND_SOC_DAPM_OUTPUT("OutputA"),
217	SND_SOC_DAPM_OUTPUT("OutputB"),
218	};
219
220	static const struct snd_soc_dapm_route cs4349_routes[] = {
221	{"DAC Playback", NULL, "OutputA"},
222	{"DAC Playback", NULL, "OutputB"},
223
224	{"OutputA", NULL, "HiFi DAC"},
225	{"OutputB", NULL, "HiFi DAC"},
226	};
227
228	#define CS4349_PCM_FORMATS (SNDRV_PCM_FMTBIT_S8 \| \
229	SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S16_BE \| \
230	SNDRV_PCM_FMTBIT_S18_3LE \| SNDRV_PCM_FMTBIT_S18_3BE \| \
231	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S20_3BE \| \
232	SNDRV_PCM_FMTBIT_S24_3LE \| SNDRV_PCM_FMTBIT_S24_3BE \| \
233	SNDRV_PCM_FMTBIT_S24_LE \| SNDRV_PCM_FMTBIT_S24_BE \| \
234	SNDRV_PCM_FMTBIT_S32_LE)
235
236	#define CS4349_PCM_RATES SNDRV_PCM_RATE_8000_192000
237
238	static const struct snd_soc_dai_ops cs4349_dai_ops = {
239	.hw_params = cs4349_pcm_hw_params,
240	.set_fmt = cs4349_set_dai_fmt,
241	.digital_mute = cs4349_digital_mute,
242	};
243
244	static struct snd_soc_dai_driver cs4349_dai = {
245	.name = "cs4349_hifi",
246	.playback = {
247	.stream_name = "DAC Playback",
248	.channels_min = 1,
249	.channels_max = 2,
250	.rates = CS4349_PCM_RATES,
251	.formats = CS4349_PCM_FORMATS,
252	},
253	.ops = &cs4349_dai_ops,
254	.symmetric_rates = 1,
255	};
256
257	static struct snd_soc_codec_driver soc_codec_dev_cs4349 = {
258	.controls = cs4349_snd_controls,
259	.num_controls = ARRAY_SIZE(cs4349_snd_controls),
260
261	.dapm_widgets = cs4349_dapm_widgets,
262	.num_dapm_widgets = ARRAY_SIZE(cs4349_dapm_widgets),
263	.dapm_routes = cs4349_routes,
264	.num_dapm_routes = ARRAY_SIZE(cs4349_routes),
265	};
266
b08b3382	267	static const struct regmap_config cs4349_regmap = {
e40da86a TH	268	.reg_bits = 8,
	269	.val_bits = 8,
	270
dd9283e2	271	.max_register = CS4349_MISC,
e40da86a TH	272	.reg_defaults = cs4349_reg_defaults,
	273	.num_reg_defaults = ARRAY_SIZE(cs4349_reg_defaults),
	274	.readable_reg = cs4349_readable_register,
0443de7e	275	.writeable_reg = cs4349_writeable_register,
e40da86a TH	276	.cache_type = REGCACHE_RBTREE,
	277	};
	278
	279	static int cs4349_i2c_probe(struct i2c_client *client,
	280	const struct i2c_device_id *id)
	281	{
	282	struct cs4349_private *cs4349;
44251551	283	int ret;
e40da86a TH	284
	285	cs4349 = devm_kzalloc(&client->dev, sizeof(*cs4349), GFP_KERNEL);
	286	if (!cs4349)
	287	return -ENOMEM;
	288
	289	cs4349->regmap = devm_regmap_init_i2c(client, &cs4349_regmap);
	290	if (IS_ERR(cs4349->regmap)) {
	291	ret = PTR_ERR(cs4349->regmap);
	292	dev_err(&client->dev, "regmap_init() failed: %d\n", ret);
	293	return ret;
	294	}
	295
e40da86a TH	296	/* Reset the Device */
	297	cs4349->reset_gpio = devm_gpiod_get_optional(&client->dev,
	298	"reset", GPIOD_OUT_LOW);
	299	if (IS_ERR(cs4349->reset_gpio))
	300	return PTR_ERR(cs4349->reset_gpio);
	301
	302	if (cs4349->reset_gpio)
	303	gpiod_set_value_cansleep(cs4349->reset_gpio, 1);
	304
	305	i2c_set_clientdata(client, cs4349);
	306
	307	return snd_soc_register_codec(&client->dev, &soc_codec_dev_cs4349,
	308	&cs4349_dai, 1);
	309	}
	310
	311	static int cs4349_i2c_remove(struct i2c_client *client)
	312	{
	313	struct cs4349_private *cs4349 = i2c_get_clientdata(client);
	314
	315	snd_soc_unregister_codec(&client->dev);
	316
	317	/* Hold down reset */
	318	if (cs4349->reset_gpio)
	319	gpiod_set_value_cansleep(cs4349->reset_gpio, 0);
	320
	321	return 0;
	322	}
	323
	324	#ifdef CONFIG_PM
	325	static int cs4349_runtime_suspend(struct device *dev)
	326	{
	327	struct cs4349_private *cs4349 = dev_get_drvdata(dev);
e40da86a TH	328	int ret;
e40da86a TH	329
cb2510da	330	ret = regmap_update_bits(cs4349->regmap, CS4349_MISC, PWR_DWN, 1);
e40da86a TH	331	if (ret < 0)
	332	return ret;
	333
	334	regcache_cache_only(cs4349->regmap, true);
	335
	336	/* Hold down reset */
	337	if (cs4349->reset_gpio)
	338	gpiod_set_value_cansleep(cs4349->reset_gpio, 0);
	339
	340	return 0;
	341	}
	342
	343	static int cs4349_runtime_resume(struct device *dev)
	344	{
	345	struct cs4349_private *cs4349 = dev_get_drvdata(dev);
e40da86a TH	346	int ret;
e40da86a TH	347
cb2510da	348	ret = regmap_update_bits(cs4349->regmap, CS4349_MISC, PWR_DWN, 0);
e40da86a TH	349	if (ret < 0)
	350	return ret;
	351
	352	if (cs4349->reset_gpio)
	353	gpiod_set_value_cansleep(cs4349->reset_gpio, 1);
	354
	355	regcache_cache_only(cs4349->regmap, false);
	356	regcache_sync(cs4349->regmap);
	357
	358	return 0;
	359	}
	360	#endif
	361
	362	static const struct dev_pm_ops cs4349_runtime_pm = {
	363	SET_RUNTIME_PM_OPS(cs4349_runtime_suspend, cs4349_runtime_resume,
	364	NULL)
	365	};
	366
	367	static const struct of_device_id cs4349_of_match[] = {
	368	{ .compatible = "cirrus,cs4349", },
	369	{},
	370	};
	371
	372	MODULE_DEVICE_TABLE(of, cs4349_of_match);
	373
	374	static const struct i2c_device_id cs4349_i2c_id[] = {
	375	{"cs4349", 0},
	376	{}
	377	};
	378
	379	MODULE_DEVICE_TABLE(i2c, cs4349_i2c_id);
	380
	381	static struct i2c_driver cs4349_i2c_driver = {
	382	.driver = {
	383	.name = "cs4349",
	384	.owner = THIS_MODULE,
	385	.of_match_table = cs4349_of_match,
	386	},
	387	.id_table = cs4349_i2c_id,
	388	.probe = cs4349_i2c_probe,
	389	.remove = cs4349_i2c_remove,
	390	};
	391
	392	module_i2c_driver(cs4349_i2c_driver);
	393
	394	MODULE_AUTHOR("Tim Howe <tim.howe@cirrus.com>");
	395	MODULE_DESCRIPTION("Cirrus Logic CS4349 ALSA SoC Codec Driver");
	396	MODULE_LICENSE("GPL");