[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 cs4349_platform_data	pdata;
	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:
	case CS4349_MODE:
	case CS4349_VMI:
	case CS4349_MUTE:
	case CS4349_VOLA:
	case CS4349_VOLB:
	case CS4349_RMPFLT:
	case 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 mode, fmt, ret;

	mode = snd_soc_read(codec, CS4349_MODE);
	cs4349->rate = params_rate(params);

	switch (cs4349->mode) {
	case SND_SOC_DAIFMT_I2S:
		mode |= MODE_FORMAT(DIF_I2S);
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		mode |= MODE_FORMAT(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;
		}
		mode |= MODE_FORMAT(fmt);
		break;
	default:
		return -EINVAL;
	}

	ret = snd_soc_write(codec, CS4349_MODE, mode);
	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,
	.cache_type		= REGCACHE_RBTREE,
};

static int cs4349_i2c_probe(struct i2c_client *client,
				      const struct i2c_device_id *id)
{
	struct cs4349_private *cs4349;
	struct cs4349_platform_data *pdata = dev_get_platdata(&client->dev);
	int ret = 0;

	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;
	}

	if (pdata)
		cs4349->pdata = *pdata;

	/* 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;
	48	struct cs4349_platform_data pdata;
	49	struct gpio_desc *reset_gpio;
	50	unsigned int mode;
	51	int rate;
	52	};
	53
	54	static bool cs4349_readable_register(struct device *dev, unsigned int reg)
	55	{
	56	switch (reg) {
	57	case CS4349_CHIPID:
	58	case CS4349_MODE:
	59	case CS4349_VMI:
	60	case CS4349_MUTE:
	61	case CS4349_VOLA:
	62	case CS4349_VOLB:
	63	case CS4349_RMPFLT:
	64	case CS4349_MISC:
65	return true;
66	default:
67	return false;
68	}
69	}
70
71	static int cs4349_set_dai_fmt(struct snd_soc_dai *codec_dai,
72	unsigned int format)
73	{
74	struct snd_soc_codec *codec = codec_dai->codec;
75	struct cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
76	unsigned int fmt;
77
78	fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;
79
80	switch (fmt) {
81	case SND_SOC_DAIFMT_I2S:
82	case SND_SOC_DAIFMT_LEFT_J:
83	case SND_SOC_DAIFMT_RIGHT_J:
84	cs4349->mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
85	break;
86	default:
87	return -EINVAL;
88	}
89
90	return 0;
91	}
92
93	static int cs4349_pcm_hw_params(struct snd_pcm_substream *substream,
94	struct snd_pcm_hw_params *params,
95	struct snd_soc_dai *dai)
96	{
dedae86d	97	struct snd_soc_codec *codec = dai->codec;
e40da86a TH	98	struct cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
	99	int mode, fmt, ret;
	100
	101	mode = snd_soc_read(codec, CS4349_MODE);
	102	cs4349->rate = params_rate(params);
	103
	104	switch (cs4349->mode) {
	105	case SND_SOC_DAIFMT_I2S:
	106	mode \|= MODE_FORMAT(DIF_I2S);
	107	break;
	108	case SND_SOC_DAIFMT_LEFT_J:
	109	mode \|= MODE_FORMAT(DIF_LEFT_JST);
	110	break;
	111	case SND_SOC_DAIFMT_RIGHT_J:
	112	switch (params_width(params)) {
	113	case 16:
	114	fmt = DIF_RGHT_JST16;
	115	break;
	116	case 24:
	117	fmt = DIF_RGHT_JST24;
	118	break;
	119	default:
	120	return -EINVAL;
	121	}
	122	mode \|= MODE_FORMAT(fmt);
	123	break;
	124	default:
	125	return -EINVAL;
	126	}
	127
	128	ret = snd_soc_write(codec, CS4349_MODE, mode);
	129	if (ret < 0)
	130	return ret;
	131
	132	return 0;
	133	}
	134
	135	static int cs4349_digital_mute(struct snd_soc_dai *dai, int mute)
	136	{
	137	struct snd_soc_codec *codec = dai->codec;
	138	int reg;
	139
	140	reg = 0;
	141	if (mute)
	142	reg = MUTE_AB_MASK;
	143
	144	return snd_soc_update_bits(codec, CS4349_MUTE, MUTE_AB_MASK, reg);
	145	}
	146
	147	static DECLARE_TLV_DB_SCALE(dig_tlv, -12750, 50, 0);
	148
	149	static const char * const chan_mix_texts[] = {
	150	"Mute", "MuteA", "MuteA SwapB", "MuteA MonoB", "SwapA MuteB",
	151	"BothR", "Swap", "SwapA MonoB", "MuteB", "Normal", "BothL",
	152	"MonoB", "MonoA MuteB", "MonoA", "MonoA SwapB", "Mono",
	153	/Normal == Channel A = Left, Channel B = Right/
	154	};
	155
	156	static const char * const fm_texts[] = {
	157	"Auto", "Single", "Double", "Quad",
	158	};
	159
	160	static const char * const deemph_texts[] = {
	161	"None", "44.1k", "48k", "32k",
162	};
163
164	static const char * const softr_zeroc_texts[] = {
165	"Immediate", "Zero Cross", "Soft Ramp", "SR on ZC",
166	};
167
168	static int deemph_values[] = {
169	0, 4, 8, 12,
170	};
171
172	static int softr_zeroc_values[] = {
173	0, 64, 128, 192,
174	};
175
176	static const struct soc_enum chan_mix_enum =
177	SOC_ENUM_SINGLE(CS4349_VMI, 0,
178	ARRAY_SIZE(chan_mix_texts),
179	chan_mix_texts);
180
181	static const struct soc_enum fm_mode_enum =
182	SOC_ENUM_SINGLE(CS4349_MODE, 0,
183	ARRAY_SIZE(fm_texts),
184	fm_texts);
185
186	static SOC_VALUE_ENUM_SINGLE_DECL(deemph_enum, CS4349_MODE, 0, DEM_MASK,
187	deemph_texts, deemph_values);
188
189	static SOC_VALUE_ENUM_SINGLE_DECL(softr_zeroc_enum, CS4349_RMPFLT, 0,
190	SR_ZC_MASK, softr_zeroc_texts,
191	softr_zeroc_values);
192
193	static const struct snd_kcontrol_new cs4349_snd_controls[] = {
194	SOC_DOUBLE_R_TLV("Master Playback Volume",
195	CS4349_VOLA, CS4349_VOLB, 0, 0xFF, 1, dig_tlv),
196	SOC_ENUM("Functional Mode", fm_mode_enum),
197	SOC_ENUM("De-Emphasis Control", deemph_enum),
198	SOC_ENUM("Soft Ramp Zero Cross Control", softr_zeroc_enum),
199	SOC_ENUM("Channel Mixer", chan_mix_enum),
200	SOC_SINGLE("VolA = VolB Switch", CS4349_VMI, 7, 1, 0),
201	SOC_SINGLE("InvertA Switch", CS4349_VMI, 6, 1, 0),
202	SOC_SINGLE("InvertB Switch", CS4349_VMI, 5, 1, 0),
203	SOC_SINGLE("Auto-Mute Switch", CS4349_MUTE, 7, 1, 0),
204	SOC_SINGLE("MUTEC A = B Switch", CS4349_MUTE, 5, 1, 0),
205	SOC_SINGLE("Soft Ramp Up Switch", CS4349_RMPFLT, 5, 1, 0),
206	SOC_SINGLE("Soft Ramp Down Switch", CS4349_RMPFLT, 4, 1, 0),
207	SOC_SINGLE("Slow Roll Off Filter Switch", CS4349_RMPFLT, 2, 1, 0),
208	SOC_SINGLE("Freeze Switch", CS4349_MISC, 5, 1, 0),
209	SOC_SINGLE("Popguard Switch", CS4349_MISC, 4, 1, 0),
210	};
211
212	static const struct snd_soc_dapm_widget cs4349_dapm_widgets[] = {
213	SND_SOC_DAPM_DAC("HiFi DAC", NULL, SND_SOC_NOPM, 0, 0),
214
215	SND_SOC_DAPM_OUTPUT("OutputA"),
216	SND_SOC_DAPM_OUTPUT("OutputB"),
217	};
218
219	static const struct snd_soc_dapm_route cs4349_routes[] = {
220	{"DAC Playback", NULL, "OutputA"},
221	{"DAC Playback", NULL, "OutputB"},
222
223	{"OutputA", NULL, "HiFi DAC"},
224	{"OutputB", NULL, "HiFi DAC"},
225	};
226
227	#define CS4349_PCM_FORMATS (SNDRV_PCM_FMTBIT_S8 \| \
228	SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S16_BE \| \
229	SNDRV_PCM_FMTBIT_S18_3LE \| SNDRV_PCM_FMTBIT_S18_3BE \| \
230	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S20_3BE \| \
231	SNDRV_PCM_FMTBIT_S24_3LE \| SNDRV_PCM_FMTBIT_S24_3BE \| \
232	SNDRV_PCM_FMTBIT_S24_LE \| SNDRV_PCM_FMTBIT_S24_BE \| \
233	SNDRV_PCM_FMTBIT_S32_LE)
234
235	#define CS4349_PCM_RATES SNDRV_PCM_RATE_8000_192000
236
237	static const struct snd_soc_dai_ops cs4349_dai_ops = {
238	.hw_params = cs4349_pcm_hw_params,
239	.set_fmt = cs4349_set_dai_fmt,
240	.digital_mute = cs4349_digital_mute,
241	};
242
243	static struct snd_soc_dai_driver cs4349_dai = {
244	.name = "cs4349_hifi",
245	.playback = {
246	.stream_name = "DAC Playback",
247	.channels_min = 1,
248	.channels_max = 2,
249	.rates = CS4349_PCM_RATES,
250	.formats = CS4349_PCM_FORMATS,
251	},
252	.ops = &cs4349_dai_ops,
253	.symmetric_rates = 1,
254	};
255
256	static struct snd_soc_codec_driver soc_codec_dev_cs4349 = {
257	.controls = cs4349_snd_controls,
258	.num_controls = ARRAY_SIZE(cs4349_snd_controls),
259
260	.dapm_widgets = cs4349_dapm_widgets,
261	.num_dapm_widgets = ARRAY_SIZE(cs4349_dapm_widgets),
262	.dapm_routes = cs4349_routes,
263	.num_dapm_routes = ARRAY_SIZE(cs4349_routes),
264	};
265
b08b3382	266	static const struct regmap_config cs4349_regmap = {
e40da86a TH	267	.reg_bits = 8,
	268	.val_bits = 8,
	269
dd9283e2	270	.max_register = CS4349_MISC,
e40da86a TH	271	.reg_defaults = cs4349_reg_defaults,
	272	.num_reg_defaults = ARRAY_SIZE(cs4349_reg_defaults),
	273	.readable_reg = cs4349_readable_register,
	274	.cache_type = REGCACHE_RBTREE,
	275	};
	276
	277	static int cs4349_i2c_probe(struct i2c_client *client,
	278	const struct i2c_device_id *id)
	279	{
	280	struct cs4349_private *cs4349;
	281	struct cs4349_platform_data *pdata = dev_get_platdata(&client->dev);
	282	int ret = 0;
	283
	284	cs4349 = devm_kzalloc(&client->dev, sizeof(*cs4349), GFP_KERNEL);
	285	if (!cs4349)
	286	return -ENOMEM;
	287
	288	cs4349->regmap = devm_regmap_init_i2c(client, &cs4349_regmap);
	289	if (IS_ERR(cs4349->regmap)) {
	290	ret = PTR_ERR(cs4349->regmap);
	291	dev_err(&client->dev, "regmap_init() failed: %d\n", ret);
	292	return ret;
	293	}
	294
	295	if (pdata)
	296	cs4349->pdata = *pdata;
	297
	298	/* Reset the Device */
	299	cs4349->reset_gpio = devm_gpiod_get_optional(&client->dev,
	300	"reset", GPIOD_OUT_LOW);
	301	if (IS_ERR(cs4349->reset_gpio))
	302	return PTR_ERR(cs4349->reset_gpio);
	303
	304	if (cs4349->reset_gpio)
	305	gpiod_set_value_cansleep(cs4349->reset_gpio, 1);
	306
	307	i2c_set_clientdata(client, cs4349);
	308
	309	return snd_soc_register_codec(&client->dev, &soc_codec_dev_cs4349,
	310	&cs4349_dai, 1);
	311	}
	312
	313	static int cs4349_i2c_remove(struct i2c_client *client)
	314	{
	315	struct cs4349_private *cs4349 = i2c_get_clientdata(client);
	316
	317	snd_soc_unregister_codec(&client->dev);
	318
	319	/* Hold down reset */
	320	if (cs4349->reset_gpio)
	321	gpiod_set_value_cansleep(cs4349->reset_gpio, 0);
	322
	323	return 0;
	324	}
	325
	326	#ifdef CONFIG_PM
	327	static int cs4349_runtime_suspend(struct device *dev)
	328	{
	329	struct cs4349_private *cs4349 = dev_get_drvdata(dev);
e40da86a TH	330	int ret;
e40da86a TH	331
cb2510da	332	ret = regmap_update_bits(cs4349->regmap, CS4349_MISC, PWR_DWN, 1);
e40da86a TH	333	if (ret < 0)
	334	return ret;
	335
	336	regcache_cache_only(cs4349->regmap, true);
	337
	338	/* Hold down reset */
	339	if (cs4349->reset_gpio)
	340	gpiod_set_value_cansleep(cs4349->reset_gpio, 0);
	341
	342	return 0;
	343	}
	344
	345	static int cs4349_runtime_resume(struct device *dev)
	346	{
	347	struct cs4349_private *cs4349 = dev_get_drvdata(dev);
e40da86a TH	348	int ret;
e40da86a TH	349
cb2510da	350	ret = regmap_update_bits(cs4349->regmap, CS4349_MISC, PWR_DWN, 0);
e40da86a TH	351	if (ret < 0)
	352	return ret;
	353
	354	if (cs4349->reset_gpio)
	355	gpiod_set_value_cansleep(cs4349->reset_gpio, 1);
	356
	357	regcache_cache_only(cs4349->regmap, false);
	358	regcache_sync(cs4349->regmap);
	359
	360	return 0;
	361	}
	362	#endif
	363
	364	static const struct dev_pm_ops cs4349_runtime_pm = {
	365	SET_RUNTIME_PM_OPS(cs4349_runtime_suspend, cs4349_runtime_resume,
	366	NULL)
	367	};
	368
	369	static const struct of_device_id cs4349_of_match[] = {
	370	{ .compatible = "cirrus,cs4349", },
	371	{},
	372	};
	373
	374	MODULE_DEVICE_TABLE(of, cs4349_of_match);
	375
	376	static const struct i2c_device_id cs4349_i2c_id[] = {
	377	{"cs4349", 0},
	378	{}
	379	};
	380
	381	MODULE_DEVICE_TABLE(i2c, cs4349_i2c_id);
	382
	383	static struct i2c_driver cs4349_i2c_driver = {
	384	.driver = {
	385	.name = "cs4349",
	386	.owner = THIS_MODULE,
	387	.of_match_table = cs4349_of_match,
	388	},
	389	.id_table = cs4349_i2c_id,
	390	.probe = cs4349_i2c_probe,
	391	.remove = cs4349_i2c_remove,
	392	};
	393
	394	module_i2c_driver(cs4349_i2c_driver);
	395
	396	MODULE_AUTHOR("Tim Howe <tim.howe@cirrus.com>");
	397	MODULE_DESCRIPTION("Cirrus Logic CS4349 ALSA SoC Codec Driver");
	398	MODULE_LICENSE("GPL");