[linux-2.6-block.git] / sound / soc / codecs / tfa9879.c

/*
 * tfa9879.c  --  driver for NXP Semiconductors TFA9879
 *
 * Copyright (C) 2014 Axentia Technologies AB
 * Author: Peter Rosin <peda@axentia.se>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/pcm_params.h>

#include "tfa9879.h"

struct tfa9879_priv {
	struct regmap *regmap;
	int lsb_justified;
};

static int tfa9879_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 tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
	int fs;
	int i2s_set = 0;

	switch (params_rate(params)) {
	case 8000:
		fs = TFA9879_I2S_FS_8000;
		break;
	case 11025:
		fs = TFA9879_I2S_FS_11025;
		break;
	case 12000:
		fs = TFA9879_I2S_FS_12000;
		break;
	case 16000:
		fs = TFA9879_I2S_FS_16000;
		break;
	case 22050:
		fs = TFA9879_I2S_FS_22050;
		break;
	case 24000:
		fs = TFA9879_I2S_FS_24000;
		break;
	case 32000:
		fs = TFA9879_I2S_FS_32000;
		break;
	case 44100:
		fs = TFA9879_I2S_FS_44100;
		break;
	case 48000:
		fs = TFA9879_I2S_FS_48000;
		break;
	case 64000:
		fs = TFA9879_I2S_FS_64000;
		break;
	case 88200:
		fs = TFA9879_I2S_FS_88200;
		break;
	case 96000:
		fs = TFA9879_I2S_FS_96000;
		break;
	default:
		return -EINVAL;
	}

	switch (params_width(params)) {
	case 16:
		i2s_set = TFA9879_I2S_SET_LSB_J_16;
		break;
	case 24:
		i2s_set = TFA9879_I2S_SET_LSB_J_24;
		break;
	default:
		return -EINVAL;
	}

	if (tfa9879->lsb_justified)
		snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
				    TFA9879_I2S_SET_MASK,
				    i2s_set << TFA9879_I2S_SET_SHIFT);

	snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
			    TFA9879_I2S_FS_MASK,
			    fs << TFA9879_I2S_FS_SHIFT);
	return 0;
}

static int tfa9879_digital_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;

	snd_soc_update_bits(codec, TFA9879_MISC_CONTROL,
			    TFA9879_S_MUTE_MASK,
			    !!mute << TFA9879_S_MUTE_SHIFT);

	return 0;
}

static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
	struct snd_soc_codec *codec = dai->codec;
	struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
	int i2s_set;
	int sck_pol;

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBS_CFS:
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF:
		sck_pol = TFA9879_SCK_POL_NORMAL;
		break;
	case SND_SOC_DAIFMT_IB_NF:
		sck_pol = TFA9879_SCK_POL_INVERSE;
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		tfa9879->lsb_justified = 0;
		i2s_set = TFA9879_I2S_SET_I2S_24;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		tfa9879->lsb_justified = 0;
		i2s_set = TFA9879_I2S_SET_MSB_J_24;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		tfa9879->lsb_justified = 1;
		i2s_set = TFA9879_I2S_SET_LSB_J_24;
		break;
	default:
		return -EINVAL;
	}

	snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
			    TFA9879_SCK_POL_MASK,
			    sck_pol << TFA9879_SCK_POL_SHIFT);
	snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
			    TFA9879_I2S_SET_MASK,
			    i2s_set << TFA9879_I2S_SET_SHIFT);
	return 0;
}

static struct reg_default tfa9879_regs[] = {
	{ TFA9879_DEVICE_CONTROL,	0x0000 }, /* 0x00 */
	{ TFA9879_SERIAL_INTERFACE_1,	0x0a18 }, /* 0x01 */
	{ TFA9879_PCM_IOM2_FORMAT_1,	0x0007 }, /* 0x02 */
	{ TFA9879_SERIAL_INTERFACE_2,	0x0a18 }, /* 0x03 */
	{ TFA9879_PCM_IOM2_FORMAT_2,	0x0007 }, /* 0x04 */
	{ TFA9879_EQUALIZER_A1,		0x59dd }, /* 0x05 */
	{ TFA9879_EQUALIZER_A2,		0xc63e }, /* 0x06 */
	{ TFA9879_EQUALIZER_B1,		0x651a }, /* 0x07 */
	{ TFA9879_EQUALIZER_B2,		0xe53e }, /* 0x08 */
	{ TFA9879_EQUALIZER_C1,		0x4616 }, /* 0x09 */
	{ TFA9879_EQUALIZER_C2,		0xd33e }, /* 0x0a */
	{ TFA9879_EQUALIZER_D1,		0x4df3 }, /* 0x0b */
	{ TFA9879_EQUALIZER_D2,		0xea3e }, /* 0x0c */
	{ TFA9879_EQUALIZER_E1,		0x5ee0 }, /* 0x0d */
	{ TFA9879_EQUALIZER_E2,		0xf93e }, /* 0x0e */
	{ TFA9879_BYPASS_CONTROL,	0x0093 }, /* 0x0f */
	{ TFA9879_DYNAMIC_RANGE_COMPR,	0x92ba }, /* 0x10 */
	{ TFA9879_BASS_TREBLE,		0x12a5 }, /* 0x11 */
	{ TFA9879_HIGH_PASS_FILTER,	0x0004 }, /* 0x12 */
	{ TFA9879_VOLUME_CONTROL,	0x10bd }, /* 0x13 */
	{ TFA9879_MISC_CONTROL,		0x0000 }, /* 0x14 */
};

static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
{
	return reg == TFA9879_MISC_STATUS;
}

static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
static const char * const tb_freq_text[] = {
	"Low", "Mid", "High"
};
static const struct soc_enum treble_freq_enum =
	SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
			ARRAY_SIZE(tb_freq_text), tb_freq_text);
static const struct soc_enum bass_freq_enum =
	SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
			ARRAY_SIZE(tb_freq_text), tb_freq_text);

static const struct snd_kcontrol_new tfa9879_controls[] = {
	SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
		       TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
	SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
		       TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
	SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
		       TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
	SOC_ENUM("Treble Corner Freq", treble_freq_enum),
	SOC_ENUM("Bass Corner Freq", bass_freq_enum),
};

static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
SND_SOC_DAPM_OUTPUT("LINEOUT"),
SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
		    NULL, 0),
};

static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
	{ "DAC", NULL, "AIFINL" },
	{ "DAC", NULL, "AIFINR" },

	{ "LINEOUT", NULL, "DAC" },

	{ "DAC", NULL, "POWER" },
};

static const struct snd_soc_codec_driver tfa9879_codec = {
	.controls = tfa9879_controls,
	.num_controls = ARRAY_SIZE(tfa9879_controls),

	.dapm_widgets = tfa9879_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tfa9879_dapm_widgets),
	.dapm_routes = tfa9879_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(tfa9879_dapm_routes),
};

static const struct regmap_config tfa9879_regmap = {
	.reg_bits = 8,
	.val_bits = 16,

	.volatile_reg = tfa9879_volatile_reg,
	.max_register = TFA9879_MISC_STATUS,
	.reg_defaults = tfa9879_regs,
	.num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
	.cache_type = REGCACHE_RBTREE,
};

static const struct snd_soc_dai_ops tfa9879_dai_ops = {
	.hw_params = tfa9879_hw_params,
	.digital_mute = tfa9879_digital_mute,
	.set_fmt = tfa9879_set_fmt,
};

#define TFA9879_RATES SNDRV_PCM_RATE_8000_96000

#define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
			 SNDRV_PCM_FMTBIT_S24_LE)

static struct snd_soc_dai_driver tfa9879_dai = {
	.name = "tfa9879-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = TFA9879_RATES,
		.formats = TFA9879_FORMATS, },
	.ops = &tfa9879_dai_ops,
};

static int tfa9879_i2c_probe(struct i2c_client *i2c,
			     const struct i2c_device_id *id)
{
	struct tfa9879_priv *tfa9879;
	int i;

	tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
	if (!tfa9879)
		return -ENOMEM;

	i2c_set_clientdata(i2c, tfa9879);

	tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
	if (IS_ERR(tfa9879->regmap))
		return PTR_ERR(tfa9879->regmap);

	/* Ensure the device is in reset state */
	for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
		regmap_write(tfa9879->regmap,
			     tfa9879_regs[i].reg, tfa9879_regs[i].def);

	return snd_soc_register_codec(&i2c->dev, &tfa9879_codec,
				      &tfa9879_dai, 1);
}

static int tfa9879_i2c_remove(struct i2c_client *client)
{
	snd_soc_unregister_codec(&client->dev);

	return 0;
}

static const struct i2c_device_id tfa9879_i2c_id[] = {
	{ "tfa9879", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);

static struct i2c_driver tfa9879_i2c_driver = {
	.driver = {
		.name = "tfa9879",
		.owner = THIS_MODULE,
	},
	.probe = tfa9879_i2c_probe,
	.remove = tfa9879_i2c_remove,
	.id_table = tfa9879_i2c_id,
};

module_i2c_driver(tfa9879_i2c_driver);

MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
MODULE_LICENSE("GPL");
Commit	Line	Data
fbace43e PR	1	/*
	2	* tfa9879.c -- driver for NXP Semiconductors TFA9879
	3	*
	4	* Copyright (C) 2014 Axentia Technologies AB
	5	* Author: Peter Rosin <peda@axentia.se>
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2 of the License, or (at your
	10	* option) any later version.
	11	*
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/init.h>
	16	#include <linux/i2c.h>
	17	#include <linux/regmap.h>
	18	#include <sound/soc.h>
	19	#include <sound/tlv.h>
	20	#include <sound/pcm_params.h>
	21
	22	#include "tfa9879.h"
	23
	24	struct tfa9879_priv {
	25	struct regmap *regmap;
	26	int lsb_justified;
	27	};
	28
	29	static int tfa9879_hw_params(struct snd_pcm_substream *substream,
	30	struct snd_pcm_hw_params *params,
	31	struct snd_soc_dai *dai)
	32	{
	33	struct snd_soc_codec *codec = dai->codec;
	34	struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
	35	int fs;
	36	int i2s_set = 0;
	37
	38	switch (params_rate(params)) {
	39	case 8000:
	40	fs = TFA9879_I2S_FS_8000;
	41	break;
	42	case 11025:
	43	fs = TFA9879_I2S_FS_11025;
	44	break;
	45	case 12000:
	46	fs = TFA9879_I2S_FS_12000;
	47	break;
	48	case 16000:
	49	fs = TFA9879_I2S_FS_16000;
	50	break;
	51	case 22050:
	52	fs = TFA9879_I2S_FS_22050;
	53	break;
	54	case 24000:
	55	fs = TFA9879_I2S_FS_24000;
	56	break;
	57	case 32000:
	58	fs = TFA9879_I2S_FS_32000;
	59	break;
	60	case 44100:
	61	fs = TFA9879_I2S_FS_44100;
	62	break;
	63	case 48000:
	64	fs = TFA9879_I2S_FS_48000;
65	break;
66	case 64000:
67	fs = TFA9879_I2S_FS_64000;
68	break;
69	case 88200:
70	fs = TFA9879_I2S_FS_88200;
71	break;
72	case 96000:
73	fs = TFA9879_I2S_FS_96000;
74	break;
75	default:
76	return -EINVAL;
77	}
78
79	switch (params_width(params)) {
80	case 16:
81	i2s_set = TFA9879_I2S_SET_LSB_J_16;
82	break;
83	case 24:
84	i2s_set = TFA9879_I2S_SET_LSB_J_24;
85	break;
86	default:
87	return -EINVAL;
88	}
89
90	if (tfa9879->lsb_justified)
91	snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
92	TFA9879_I2S_SET_MASK,
93	i2s_set << TFA9879_I2S_SET_SHIFT);
94
95	snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
96	TFA9879_I2S_FS_MASK,
97	fs << TFA9879_I2S_FS_SHIFT);
98	return 0;
99	}
100
101	static int tfa9879_digital_mute(struct snd_soc_dai *dai, int mute)
102	{
103	struct snd_soc_codec *codec = dai->codec;
104
105	snd_soc_update_bits(codec, TFA9879_MISC_CONTROL,
106	TFA9879_S_MUTE_MASK,
107	!!mute << TFA9879_S_MUTE_SHIFT);
108
109	return 0;
110	}
111
112	static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
113	{
114	struct snd_soc_codec *codec = dai->codec;
115	struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
116	int i2s_set;
117	int sck_pol;
118
119	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
120	case SND_SOC_DAIFMT_CBS_CFS:
121	break;
122	default:
123	return -EINVAL;
124	}
125
126	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
127	case SND_SOC_DAIFMT_NB_NF:
128	sck_pol = TFA9879_SCK_POL_NORMAL;
129	break;
130	case SND_SOC_DAIFMT_IB_NF:
131	sck_pol = TFA9879_SCK_POL_INVERSE;
132	break;
133	default:
134	return -EINVAL;
135	}
136
137	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
138	case SND_SOC_DAIFMT_I2S:
139	tfa9879->lsb_justified = 0;
140	i2s_set = TFA9879_I2S_SET_I2S_24;
141	break;
142	case SND_SOC_DAIFMT_LEFT_J:
143	tfa9879->lsb_justified = 0;
144	i2s_set = TFA9879_I2S_SET_MSB_J_24;
145	break;
146	case SND_SOC_DAIFMT_RIGHT_J:
147	tfa9879->lsb_justified = 1;
148	i2s_set = TFA9879_I2S_SET_LSB_J_24;
149	break;
150	default:
151	return -EINVAL;
152	}
153
154	snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
155	TFA9879_SCK_POL_MASK,
156	sck_pol << TFA9879_SCK_POL_SHIFT);
157	snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
158	TFA9879_I2S_SET_MASK,
159	i2s_set << TFA9879_I2S_SET_SHIFT);
160	return 0;
161	}
162
163	static struct reg_default tfa9879_regs[] = {
164	{ TFA9879_DEVICE_CONTROL, 0x0000 }, /* 0x00 */
165	{ TFA9879_SERIAL_INTERFACE_1, 0x0a18 }, /* 0x01 */
166	{ TFA9879_PCM_IOM2_FORMAT_1, 0x0007 }, /* 0x02 */
167	{ TFA9879_SERIAL_INTERFACE_2, 0x0a18 }, /* 0x03 */
168	{ TFA9879_PCM_IOM2_FORMAT_2, 0x0007 }, /* 0x04 */
169	{ TFA9879_EQUALIZER_A1, 0x59dd }, /* 0x05 */
170	{ TFA9879_EQUALIZER_A2, 0xc63e }, /* 0x06 */
171	{ TFA9879_EQUALIZER_B1, 0x651a }, /* 0x07 */
172	{ TFA9879_EQUALIZER_B2, 0xe53e }, /* 0x08 */
173	{ TFA9879_EQUALIZER_C1, 0x4616 }, /* 0x09 */
174	{ TFA9879_EQUALIZER_C2, 0xd33e }, /* 0x0a */
175	{ TFA9879_EQUALIZER_D1, 0x4df3 }, /* 0x0b */
176	{ TFA9879_EQUALIZER_D2, 0xea3e }, /* 0x0c */
177	{ TFA9879_EQUALIZER_E1, 0x5ee0 }, /* 0x0d */
178	{ TFA9879_EQUALIZER_E2, 0xf93e }, /* 0x0e */
179	{ TFA9879_BYPASS_CONTROL, 0x0093 }, /* 0x0f */
180	{ TFA9879_DYNAMIC_RANGE_COMPR, 0x92ba }, /* 0x10 */
181	{ TFA9879_BASS_TREBLE, 0x12a5 }, /* 0x11 */
182	{ TFA9879_HIGH_PASS_FILTER, 0x0004 }, /* 0x12 */
183	{ TFA9879_VOLUME_CONTROL, 0x10bd }, /* 0x13 */
184	{ TFA9879_MISC_CONTROL, 0x0000 }, /* 0x14 */
185	};
186
187	static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
188	{
189	return reg == TFA9879_MISC_STATUS;
190	}
191
192	static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
193	static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
194	static const char * const tb_freq_text[] = {
195	"Low", "Mid", "High"
196	};
197	static const struct soc_enum treble_freq_enum =
198	SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
199	ARRAY_SIZE(tb_freq_text), tb_freq_text);
200	static const struct soc_enum bass_freq_enum =
201	SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
202	ARRAY_SIZE(tb_freq_text), tb_freq_text);
203
204	static const struct snd_kcontrol_new tfa9879_controls[] = {
205	SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
206	TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
207	SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
208	TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
209	SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
210	TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
211	SOC_ENUM("Treble Corner Freq", treble_freq_enum),
212	SOC_ENUM("Bass Corner Freq", bass_freq_enum),
213	};
214
215	static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
216	SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
217	SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
218	SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
219	SND_SOC_DAPM_OUTPUT("LINEOUT"),
220	SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
221	NULL, 0),
222	};
223
224	static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
225	{ "DAC", NULL, "AIFINL" },
226	{ "DAC", NULL, "AIFINR" },
227
228	{ "LINEOUT", NULL, "DAC" },
229
230	{ "DAC", NULL, "POWER" },
231	};
232
233	static const struct snd_soc_codec_driver tfa9879_codec = {
234	.controls = tfa9879_controls,
235	.num_controls = ARRAY_SIZE(tfa9879_controls),
236
237	.dapm_widgets = tfa9879_dapm_widgets,
238	.num_dapm_widgets = ARRAY_SIZE(tfa9879_dapm_widgets),
239	.dapm_routes = tfa9879_dapm_routes,
240	.num_dapm_routes = ARRAY_SIZE(tfa9879_dapm_routes),
241	};
242
243	static const struct regmap_config tfa9879_regmap = {
244	.reg_bits = 8,
245	.val_bits = 16,
246
247	.volatile_reg = tfa9879_volatile_reg,
248	.max_register = TFA9879_MISC_STATUS,
249	.reg_defaults = tfa9879_regs,
250	.num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
251	.cache_type = REGCACHE_RBTREE,
252	};
253
254	static const struct snd_soc_dai_ops tfa9879_dai_ops = {
255	.hw_params = tfa9879_hw_params,
256	.digital_mute = tfa9879_digital_mute,
257	.set_fmt = tfa9879_set_fmt,
258	};
259
260	#define TFA9879_RATES SNDRV_PCM_RATE_8000_96000
261
262	#define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| \
263	SNDRV_PCM_FMTBIT_S24_LE)
264
265	static struct snd_soc_dai_driver tfa9879_dai = {
266	.name = "tfa9879-hifi",
267	.playback = {
268	.stream_name = "Playback",
269	.channels_min = 2,
270	.channels_max = 2,
271	.rates = TFA9879_RATES,
272	.formats = TFA9879_FORMATS, },
273	.ops = &tfa9879_dai_ops,
274	};
275
276	static int tfa9879_i2c_probe(struct i2c_client *i2c,
277	const struct i2c_device_id *id)
278	{
279	struct tfa9879_priv *tfa9879;
280	int i;
281
282	tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
427ced4b WY	283	if (!tfa9879)
427ced4b WY	284	return -ENOMEM;
fbace43e PR	285
	286	i2c_set_clientdata(i2c, tfa9879);
	287
	288	tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
	289	if (IS_ERR(tfa9879->regmap))
	290	return PTR_ERR(tfa9879->regmap);
	291
	292	/* Ensure the device is in reset state */
	293	for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
	294	regmap_write(tfa9879->regmap,
	295	tfa9879_regs[i].reg, tfa9879_regs[i].def);
	296
	297	return snd_soc_register_codec(&i2c->dev, &tfa9879_codec,
	298	&tfa9879_dai, 1);
	299	}
	300
	301	static int tfa9879_i2c_remove(struct i2c_client *client)
	302	{
	303	snd_soc_unregister_codec(&client->dev);
	304
	305	return 0;
	306	}
	307
	308	static const struct i2c_device_id tfa9879_i2c_id[] = {
	309	{ "tfa9879", 0 },
	310	{ }
	311	};
	312	MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
	313
	314	static struct i2c_driver tfa9879_i2c_driver = {
	315	.driver = {
	316	.name = "tfa9879",
	317	.owner = THIS_MODULE,
	318	},
	319	.probe = tfa9879_i2c_probe,
	320	.remove = tfa9879_i2c_remove,
	321	.id_table = tfa9879_i2c_id,
	322	};
	323
	324	module_i2c_driver(tfa9879_i2c_driver);
	325
	326	MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
	327	MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
	328	MODULE_LICENSE("GPL");