[linux-2.6-block.git] / sound / soc / codecs / max98371.c

/*
 * max98371.c -- ALSA SoC Stereo MAX98371 driver
 *
 * Copyright 2015-16 Maxim Integrated Products
 *
 * 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/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include "max98371.h"

static const char *const monomix_text[] = {
	"Left", "Right", "LeftRightDiv2",
};

static const char *const hpf_cutoff_txt[] = {
	"Disable", "DC Block", "50Hz",
	"100Hz", "200Hz", "400Hz", "800Hz",
};

static SOC_ENUM_SINGLE_DECL(max98371_monomix, MAX98371_MONOMIX_CFG, 0,
		monomix_text);

static SOC_ENUM_SINGLE_DECL(max98371_hpf_cutoff, MAX98371_HPF, 0,
		hpf_cutoff_txt);

static const DECLARE_TLV_DB_RANGE(max98371_dht_min_gain,
	0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),
	2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),
	4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),
	6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),
	8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),
	10, 11, TLV_DB_SCALE_ITEM(1699, 101, 0),
);

static const DECLARE_TLV_DB_RANGE(max98371_dht_max_gain,
	0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),
	2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),
	4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),
	6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),
	8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),
	10, 11, TLV_DB_SCALE_ITEM(1699, 208, 0),
);

static const DECLARE_TLV_DB_RANGE(max98371_dht_rot_gain,
	0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0),
	2, 6, TLV_DB_SCALE_ITEM(-100, -100, 0),
	7, 8, TLV_DB_SCALE_ITEM(-800, -200, 0),
	9, 11, TLV_DB_SCALE_ITEM(-1200, -300, 0),
	12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0),
	14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0),
);

static const struct reg_default max98371_reg[] = {
	{ 0x01, 0x00 },
	{ 0x02, 0x00 },
	{ 0x03, 0x00 },
	{ 0x04, 0x00 },
	{ 0x05, 0x00 },
	{ 0x06, 0x00 },
	{ 0x07, 0x00 },
	{ 0x08, 0x00 },
	{ 0x09, 0x00 },
	{ 0x0A, 0x00 },
	{ 0x10, 0x06 },
	{ 0x11, 0x08 },
	{ 0x14, 0x80 },
	{ 0x15, 0x00 },
	{ 0x16, 0x00 },
	{ 0x18, 0x00 },
	{ 0x19, 0x00 },
	{ 0x1C, 0x00 },
	{ 0x1D, 0x00 },
	{ 0x1E, 0x00 },
	{ 0x1F, 0x00 },
	{ 0x20, 0x00 },
	{ 0x21, 0x00 },
	{ 0x22, 0x00 },
	{ 0x23, 0x00 },
	{ 0x24, 0x00 },
	{ 0x25, 0x00 },
	{ 0x26, 0x00 },
	{ 0x27, 0x00 },
	{ 0x28, 0x00 },
	{ 0x29, 0x00 },
	{ 0x2A, 0x00 },
	{ 0x2B, 0x00 },
	{ 0x2C, 0x00 },
	{ 0x2D, 0x00 },
	{ 0x2E, 0x0B },
	{ 0x31, 0x00 },
	{ 0x32, 0x18 },
	{ 0x33, 0x00 },
	{ 0x34, 0x00 },
	{ 0x36, 0x00 },
	{ 0x37, 0x00 },
	{ 0x38, 0x00 },
	{ 0x39, 0x00 },
	{ 0x3A, 0x00 },
	{ 0x3B, 0x00 },
	{ 0x3C, 0x00 },
	{ 0x3D, 0x00 },
	{ 0x3E, 0x00 },
	{ 0x3F, 0x00 },
	{ 0x40, 0x00 },
	{ 0x41, 0x00 },
	{ 0x42, 0x00 },
	{ 0x43, 0x00 },
	{ 0x4A, 0x00 },
	{ 0x4B, 0x00 },
	{ 0x4C, 0x00 },
	{ 0x4D, 0x00 },
	{ 0x4E, 0x00 },
	{ 0x50, 0x00 },
	{ 0x51, 0x00 },
	{ 0x55, 0x00 },
	{ 0x58, 0x00 },
	{ 0x59, 0x00 },
	{ 0x5C, 0x00 },
	{ 0xFF, 0x43 },
};

static bool max98371_volatile_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case MAX98371_IRQ_CLEAR1:
	case MAX98371_IRQ_CLEAR2:
	case MAX98371_IRQ_CLEAR3:
	case MAX98371_VERSION:
		return true;
	default:
		return false;
	}
}

static bool max98371_readable_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case MAX98371_SOFT_RESET:
		return false;
	default:
		return true;
	}
};

static const DECLARE_TLV_DB_RANGE(max98371_gain_tlv,
	0, 7, TLV_DB_SCALE_ITEM(0, 50, 0),
	8, 10, TLV_DB_SCALE_ITEM(400, 100, 0)
);

static const DECLARE_TLV_DB_RANGE(max98371_noload_gain_tlv,
	0, 11, TLV_DB_SCALE_ITEM(950, 100, 0),
);

static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1);

static const struct snd_kcontrol_new max98371_snd_controls[] = {
	SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN,
			MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0,
			max98371_gain_tlv),
	SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0,
			(1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv),
	SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN,
			0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0,
			max98371_dht_max_gain),
	SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN,
			0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0,
			max98371_dht_min_gain),
	SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN,
			0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0,
			max98371_dht_rot_gain),
	SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0),
	SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0),
	SOC_ENUM("Monomix Select", max98371_monomix),
	SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff),
};

static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai,
		unsigned int fmt)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec);
	unsigned int val = 0;

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBS_CFS:
		break;
	default:
		dev_err(codec->dev, "DAI clock mode unsupported");
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		val |= 0;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		val |= MAX98371_DAI_RIGHT;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		val |= MAX98371_DAI_LEFT;
		break;
	default:
		dev_err(codec->dev, "DAI wrong mode unsupported");
		return -EINVAL;
	}
	regmap_update_bits(max98371->regmap, MAX98371_FMT,
			MAX98371_FMT_MODE_MASK, val);
	return 0;
}

static int max98371_dai_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 max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec);
	int blr_clk_ratio, ch_size, channels = params_channels(params);
	int rate = params_rate(params);

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S8:
		regmap_update_bits(max98371->regmap, MAX98371_FMT,
				MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);
		ch_size = 8;
		break;
	case SNDRV_PCM_FORMAT_S16_LE:
		regmap_update_bits(max98371->regmap, MAX98371_FMT,
				MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);
		ch_size = 16;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		regmap_update_bits(max98371->regmap, MAX98371_FMT,
				MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);
		ch_size = 24;
		break;
	case SNDRV_PCM_FORMAT_S32_LE:
		regmap_update_bits(max98371->regmap, MAX98371_FMT,
				MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);
		ch_size = 32;
		break;
	default:
		return -EINVAL;
	}

	/* BCLK/LRCLK ratio calculation */
	blr_clk_ratio = channels * ch_size;
	switch (blr_clk_ratio) {
	case 32:
		regmap_update_bits(max98371->regmap,
			MAX98371_DAI_CLK,
			MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32);
		break;
	case 48:
		regmap_update_bits(max98371->regmap,
			MAX98371_DAI_CLK,
			MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48);
		break;
	case 64:
		regmap_update_bits(max98371->regmap,
			MAX98371_DAI_CLK,
			MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64);
		break;
	default:
		return -EINVAL;
	}

	switch (rate) {
	case 32000:
		regmap_update_bits(max98371->regmap,
			MAX98371_SPK_SR,
			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32);
		break;
	case 44100:
		regmap_update_bits(max98371->regmap,
			MAX98371_SPK_SR,
			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44);
		break;
	case 48000:
		regmap_update_bits(max98371->regmap,
			MAX98371_SPK_SR,
			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48);
		break;
	case 88200:
		regmap_update_bits(max98371->regmap,
			MAX98371_SPK_SR,
			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88);
		break;
	case 96000:
		regmap_update_bits(max98371->regmap,
			MAX98371_SPK_SR,
			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96);
		break;
	default:
		return -EINVAL;
	}

	/* enabling both the RX channels*/
	regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC,
			MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1);
	regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL,
			MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK);
	return 0;
}

static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0),
	SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE,
		0, 0, NULL, 0),
	SND_SOC_DAPM_OUTPUT("SPK_OUT"),
};

static const struct snd_soc_dapm_route max98371_audio_map[] = {
	{"DAC", NULL, "HiFi Playback"},
	{"SPK_OUT", NULL, "DAC"},
	{"SPK_OUT", NULL, "Global Enable"},
};

#define MAX98371_RATES SNDRV_PCM_RATE_8000_48000
#define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \
		SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE)

static const struct snd_soc_dai_ops max98371_dai_ops = {
	.set_fmt = max98371_dai_set_fmt,
	.hw_params = max98371_dai_hw_params,
};

static struct snd_soc_dai_driver max98371_dai[] = {
	{
		.name = "max98371-aif1",
		.playback = {
			.stream_name = "HiFi Playback",
			.channels_min = 1,
			.channels_max = 2,
			.rates = SNDRV_PCM_RATE_8000_48000,
			.formats = MAX98371_FORMATS,
		},
		.ops = &max98371_dai_ops,
	}
};

static const struct snd_soc_codec_driver max98371_codec = {
	.controls = max98371_snd_controls,
	.num_controls = ARRAY_SIZE(max98371_snd_controls),
	.dapm_routes = max98371_audio_map,
	.num_dapm_routes = ARRAY_SIZE(max98371_audio_map),
	.dapm_widgets = max98371_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(max98371_dapm_widgets),
};

static const struct regmap_config max98371_regmap = {
	.reg_bits         = 8,
	.val_bits         = 8,
	.max_register     = MAX98371_VERSION,
	.reg_defaults     = max98371_reg,
	.num_reg_defaults = ARRAY_SIZE(max98371_reg),
	.volatile_reg     = max98371_volatile_register,
	.readable_reg     = max98371_readable_register,
	.cache_type       = REGCACHE_RBTREE,
};

static int max98371_i2c_probe(struct i2c_client *i2c,
		const struct i2c_device_id *id)
{
	struct max98371_priv *max98371;
	int ret, reg;

	max98371 = devm_kzalloc(&i2c->dev,
			sizeof(*max98371), GFP_KERNEL);
	if (!max98371)
		return -ENOMEM;

	i2c_set_clientdata(i2c, max98371);
	max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap);
	if (IS_ERR(max98371->regmap)) {
		ret = PTR_ERR(max98371->regmap);
		dev_err(&i2c->dev,
				"Failed to allocate regmap: %d\n", ret);
		return ret;
	}

	ret = regmap_read(max98371->regmap, MAX98371_VERSION, &reg);
	if (ret < 0) {
		dev_info(&i2c->dev, "device error %d\n", ret);
		return ret;
	}
	dev_info(&i2c->dev, "device version %x\n", reg);

	ret = snd_soc_register_codec(&i2c->dev, &max98371_codec,
			max98371_dai, ARRAY_SIZE(max98371_dai));
	if (ret < 0) {
		dev_err(&i2c->dev, "Failed to register codec: %d\n", ret);
		return ret;
	}
	return ret;
}

static int max98371_i2c_remove(struct i2c_client *client)
{
	snd_soc_unregister_codec(&client->dev);
	return 0;
}

static const struct i2c_device_id max98371_i2c_id[] = {
	{ "max98371", 0 },
	{ }
};

MODULE_DEVICE_TABLE(i2c, max98371_i2c_id);

static const struct of_device_id max98371_of_match[] = {
	{ .compatible = "maxim,max98371", },
	{ }
};
MODULE_DEVICE_TABLE(of, max98371_of_match);

static struct i2c_driver max98371_i2c_driver = {
	.driver = {
		.name = "max98371",
		.owner = THIS_MODULE,
		.pm = NULL,
		.of_match_table = of_match_ptr(max98371_of_match),
	},
	.probe  = max98371_i2c_probe,
	.remove = max98371_i2c_remove,
	.id_table = max98371_i2c_id,
};

module_i2c_driver(max98371_i2c_driver);

MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC MAX98371 driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
ca2cd6bc	1	/*
	2	* max98371.c -- ALSA SoC Stereo MAX98371 driver
	3	*
	4	* Copyright 2015-16 Maxim Integrated Products
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/i2c.h>
	12	#include <linux/module.h>
	13	#include <linux/regmap.h>
	14	#include <linux/slab.h>
	15	#include <sound/pcm.h>
	16	#include <sound/pcm_params.h>
	17	#include <sound/soc.h>
	18	#include <sound/tlv.h>
	19	#include "max98371.h"
	20
	21	static const char *const monomix_text[] = {
	22	"Left", "Right", "LeftRightDiv2",
	23	};
	24
	25	static const char *const hpf_cutoff_txt[] = {
	26	"Disable", "DC Block", "50Hz",
	27	"100Hz", "200Hz", "400Hz", "800Hz",
	28	};
	29
	30	static SOC_ENUM_SINGLE_DECL(max98371_monomix, MAX98371_MONOMIX_CFG, 0,
	31	monomix_text);
	32
	33	static SOC_ENUM_SINGLE_DECL(max98371_hpf_cutoff, MAX98371_HPF, 0,
	34	hpf_cutoff_txt);
	35
	36	static const DECLARE_TLV_DB_RANGE(max98371_dht_min_gain,
	37	0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),
	38	2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),
	39	4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),
	40	6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),
	41	8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),
	42	10, 11, TLV_DB_SCALE_ITEM(1699, 101, 0),
	43	);
	44
	45	static const DECLARE_TLV_DB_RANGE(max98371_dht_max_gain,
	46	0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),
	47	2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),
	48	4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),
	49	6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),
	50	8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),
	51	10, 11, TLV_DB_SCALE_ITEM(1699, 208, 0),
	52	);
	53
	54	static const DECLARE_TLV_DB_RANGE(max98371_dht_rot_gain,
	55	0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0),
	56	2, 6, TLV_DB_SCALE_ITEM(-100, -100, 0),
	57	7, 8, TLV_DB_SCALE_ITEM(-800, -200, 0),
	58	9, 11, TLV_DB_SCALE_ITEM(-1200, -300, 0),
	59	12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0),
	60	14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0),
	61	);
	62
	63	static const struct reg_default max98371_reg[] = {
	64	{ 0x01, 0x00 },
65	{ 0x02, 0x00 },
66	{ 0x03, 0x00 },
67	{ 0x04, 0x00 },
68	{ 0x05, 0x00 },
69	{ 0x06, 0x00 },
70	{ 0x07, 0x00 },
71	{ 0x08, 0x00 },
72	{ 0x09, 0x00 },
73	{ 0x0A, 0x00 },
74	{ 0x10, 0x06 },
75	{ 0x11, 0x08 },
76	{ 0x14, 0x80 },
77	{ 0x15, 0x00 },
78	{ 0x16, 0x00 },
79	{ 0x18, 0x00 },
80	{ 0x19, 0x00 },
81	{ 0x1C, 0x00 },
82	{ 0x1D, 0x00 },
83	{ 0x1E, 0x00 },
84	{ 0x1F, 0x00 },
85	{ 0x20, 0x00 },
86	{ 0x21, 0x00 },
87	{ 0x22, 0x00 },
88	{ 0x23, 0x00 },
89	{ 0x24, 0x00 },
90	{ 0x25, 0x00 },
91	{ 0x26, 0x00 },
92	{ 0x27, 0x00 },
93	{ 0x28, 0x00 },
94	{ 0x29, 0x00 },
95	{ 0x2A, 0x00 },
96	{ 0x2B, 0x00 },
97	{ 0x2C, 0x00 },
98	{ 0x2D, 0x00 },
99	{ 0x2E, 0x0B },
100	{ 0x31, 0x00 },
101	{ 0x32, 0x18 },
102	{ 0x33, 0x00 },
103	{ 0x34, 0x00 },
104	{ 0x36, 0x00 },
105	{ 0x37, 0x00 },
106	{ 0x38, 0x00 },
107	{ 0x39, 0x00 },
108	{ 0x3A, 0x00 },
109	{ 0x3B, 0x00 },
ca2cd6bc	110	{ 0x3C, 0x00 },
	111	{ 0x3D, 0x00 },
	112	{ 0x3E, 0x00 },
	113	{ 0x3F, 0x00 },
	114	{ 0x40, 0x00 },
	115	{ 0x41, 0x00 },
	116	{ 0x42, 0x00 },
	117	{ 0x43, 0x00 },
	118	{ 0x4A, 0x00 },
	119	{ 0x4B, 0x00 },
	120	{ 0x4C, 0x00 },
	121	{ 0x4D, 0x00 },
	122	{ 0x4E, 0x00 },
	123	{ 0x50, 0x00 },
	124	{ 0x51, 0x00 },
	125	{ 0x55, 0x00 },
	126	{ 0x58, 0x00 },
	127	{ 0x59, 0x00 },
	128	{ 0x5C, 0x00 },
	129	{ 0xFF, 0x43 },
	130	};
	131
	132	static bool max98371_volatile_register(struct device *dev, unsigned int reg)
	133	{
	134	switch (reg) {
	135	case MAX98371_IRQ_CLEAR1:
	136	case MAX98371_IRQ_CLEAR2:
	137	case MAX98371_IRQ_CLEAR3:
	138	case MAX98371_VERSION:
	139	return true;
	140	default:
	141	return false;
	142	}
	143	}
	144
	145	static bool max98371_readable_register(struct device *dev, unsigned int reg)
	146	{
	147	switch (reg) {
	148	case MAX98371_SOFT_RESET:
	149	return false;
	150	default:
	151	return true;
	152	}
	153	};
	154
	155	static const DECLARE_TLV_DB_RANGE(max98371_gain_tlv,
	156	0, 7, TLV_DB_SCALE_ITEM(0, 50, 0),
	157	8, 10, TLV_DB_SCALE_ITEM(400, 100, 0)
	158	);
	159
	160	static const DECLARE_TLV_DB_RANGE(max98371_noload_gain_tlv,
	161	0, 11, TLV_DB_SCALE_ITEM(950, 100, 0),
	162	);
	163
	164	static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1);
	165
	166	static const struct snd_kcontrol_new max98371_snd_controls[] = {
	167	SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN,
	168	MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0,
	169	max98371_gain_tlv),
	170	SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0,
	171	(1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv),
	172	SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN,
	173	0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0,
174	max98371_dht_max_gain),
175	SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN,
176	0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0,
177	max98371_dht_min_gain),
178	SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN,
179	0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0,
180	max98371_dht_rot_gain),
181	SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0),
182	SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0),
183	SOC_ENUM("Monomix Select", max98371_monomix),
184	SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff),
185	};
186
187	static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai,
188	unsigned int fmt)
189	{
190	struct snd_soc_codec *codec = codec_dai->codec;
191	struct max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec);
192	unsigned int val = 0;
193
194	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
195	case SND_SOC_DAIFMT_CBS_CFS:
196	break;
197	default:
198	dev_err(codec->dev, "DAI clock mode unsupported");
199	return -EINVAL;
200	}
201
202	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
203	case SND_SOC_DAIFMT_I2S:
204	val \|= 0;
205	break;
206	case SND_SOC_DAIFMT_RIGHT_J:
207	val \|= MAX98371_DAI_RIGHT;
208	break;
209	case SND_SOC_DAIFMT_LEFT_J:
210	val \|= MAX98371_DAI_LEFT;
211	break;
212	default:
213	dev_err(codec->dev, "DAI wrong mode unsupported");
214	return -EINVAL;
215	}
216	regmap_update_bits(max98371->regmap, MAX98371_FMT,
217	MAX98371_FMT_MODE_MASK, val);
218	return 0;
219	}
220
221	static int max98371_dai_hw_params(struct snd_pcm_substream *substream,
222	struct snd_pcm_hw_params *params,
223	struct snd_soc_dai *dai)
224	{
225	struct snd_soc_codec *codec = dai->codec;
226	struct max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec);
227	int blr_clk_ratio, ch_size, channels = params_channels(params);
228	int rate = params_rate(params);
229
230	switch (params_format(params)) {
231	case SNDRV_PCM_FORMAT_S8:
232	regmap_update_bits(max98371->regmap, MAX98371_FMT,
233	MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);
234	ch_size = 8;
235	break;
236	case SNDRV_PCM_FORMAT_S16_LE:
237	regmap_update_bits(max98371->regmap, MAX98371_FMT,
238	MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);
239	ch_size = 16;
240	break;
241	case SNDRV_PCM_FORMAT_S24_LE:
242	regmap_update_bits(max98371->regmap, MAX98371_FMT,
243	MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);
244	ch_size = 24;
245	break;
246	case SNDRV_PCM_FORMAT_S32_LE:
247	regmap_update_bits(max98371->regmap, MAX98371_FMT,
248	MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);
249	ch_size = 32;
250	break;
251	default:
252	return -EINVAL;
253	}
254
255	/* BCLK/LRCLK ratio calculation */
256	blr_clk_ratio = channels * ch_size;
257	switch (blr_clk_ratio) {
258	case 32:
259	regmap_update_bits(max98371->regmap,
260	MAX98371_DAI_CLK,
261	MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32);
262	break;
263	case 48:
264	regmap_update_bits(max98371->regmap,
265	MAX98371_DAI_CLK,
266	MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48);
267	break;
268	case 64:
269	regmap_update_bits(max98371->regmap,
270	MAX98371_DAI_CLK,
271	MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64);
272	break;
273	default:
274	return -EINVAL;
275	}
276
277	switch (rate) {
278	case 32000:
279	regmap_update_bits(max98371->regmap,
280	MAX98371_SPK_SR,
281	MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32);
282	break;
283	case 44100:
284	regmap_update_bits(max98371->regmap,
285	MAX98371_SPK_SR,
286	MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44);
287	break;
288	case 48000:
289	regmap_update_bits(max98371->regmap,
290	MAX98371_SPK_SR,
291	MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48);
292	break;
293	case 88200:
294	regmap_update_bits(max98371->regmap,
295	MAX98371_SPK_SR,
296	MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88);
297	break;
298	case 96000:
299	regmap_update_bits(max98371->regmap,
300	MAX98371_SPK_SR,
301	MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96);
302	break;
303	default:
304	return -EINVAL;
305	}
306
307	/* enabling both the RX channels*/
308	regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC,
309	MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1);
310	regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL,
311	MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK);
312	return 0;
313	}
314
315	static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = {
316	SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0),
317	SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE,
318	0, 0, NULL, 0),
319	SND_SOC_DAPM_OUTPUT("SPK_OUT"),
320	};
321
322	static const struct snd_soc_dapm_route max98371_audio_map[] = {
323	{"DAC", NULL, "HiFi Playback"},
324	{"SPK_OUT", NULL, "DAC"},
325	{"SPK_OUT", NULL, "Global Enable"},
326	};
327
328	#define MAX98371_RATES SNDRV_PCM_RATE_8000_48000
329	#define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_S16_BE \| \
330	SNDRV_PCM_FMTBIT_S24_BE \| SNDRV_PCM_FMTBIT_S32_BE)
331
332	static const struct snd_soc_dai_ops max98371_dai_ops = {
333	.set_fmt = max98371_dai_set_fmt,
334	.hw_params = max98371_dai_hw_params,
335	};
336
337	static struct snd_soc_dai_driver max98371_dai[] = {
338	{
339	.name = "max98371-aif1",
340	.playback = {
341	.stream_name = "HiFi Playback",
342	.channels_min = 1,
343	.channels_max = 2,
344	.rates = SNDRV_PCM_RATE_8000_48000,
345	.formats = MAX98371_FORMATS,
346	},
347	.ops = &max98371_dai_ops,
348	}
349	};
350
351	static const struct snd_soc_codec_driver max98371_codec = {
352	.controls = max98371_snd_controls,
353	.num_controls = ARRAY_SIZE(max98371_snd_controls),
354	.dapm_routes = max98371_audio_map,
355	.num_dapm_routes = ARRAY_SIZE(max98371_audio_map),
356	.dapm_widgets = max98371_dapm_widgets,
357	.num_dapm_widgets = ARRAY_SIZE(max98371_dapm_widgets),
358	};
359
360	static const struct regmap_config max98371_regmap = {
361	.reg_bits = 8,
362	.val_bits = 8,
363	.max_register = MAX98371_VERSION,
364	.reg_defaults = max98371_reg,
365	.num_reg_defaults = ARRAY_SIZE(max98371_reg),
366	.volatile_reg = max98371_volatile_register,
367	.readable_reg = max98371_readable_register,
368	.cache_type = REGCACHE_RBTREE,
369	};
370
371	static int max98371_i2c_probe(struct i2c_client *i2c,
372	const struct i2c_device_id *id)
373	{
374	struct max98371_priv *max98371;
375	int ret, reg;
376
377	max98371 = devm_kzalloc(&i2c->dev,
378	sizeof(*max98371), GFP_KERNEL);
379	if (!max98371)
380	return -ENOMEM;
381
382	i2c_set_clientdata(i2c, max98371);
383	max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap);
384	if (IS_ERR(max98371->regmap)) {
385	ret = PTR_ERR(max98371->regmap);
386	dev_err(&i2c->dev,
387	"Failed to allocate regmap: %d\n", ret);
388	return ret;
389	}
390
391	ret = regmap_read(max98371->regmap, MAX98371_VERSION, &reg);
392	if (ret < 0) {
393	dev_info(&i2c->dev, "device error %d\n", ret);
394	return ret;
395	}
396	dev_info(&i2c->dev, "device version %x\n", reg);
397
398	ret = snd_soc_register_codec(&i2c->dev, &max98371_codec,
399	max98371_dai, ARRAY_SIZE(max98371_dai));
400	if (ret < 0) {
401	dev_err(&i2c->dev, "Failed to register codec: %d\n", ret);
402	return ret;
403	}
404	return ret;
405	}
406
407	static int max98371_i2c_remove(struct i2c_client *client)
408	{
409	snd_soc_unregister_codec(&client->dev);
410	return 0;
411	}
412
413	static const struct i2c_device_id max98371_i2c_id[] = {
414	{ "max98371", 0 },
209c721c	415	{ }
ca2cd6bc	416	};
	417
	418	MODULE_DEVICE_TABLE(i2c, max98371_i2c_id);
	419
	420	static const struct of_device_id max98371_of_match[] = {
	421	{ .compatible = "maxim,max98371", },
	422	{ }
	423	};
	424	MODULE_DEVICE_TABLE(of, max98371_of_match);
	425
	426	static struct i2c_driver max98371_i2c_driver = {
	427	.driver = {
	428	.name = "max98371",
	429	.owner = THIS_MODULE,
	430	.pm = NULL,
	431	.of_match_table = of_match_ptr(max98371_of_match),
	432	},
	433	.probe = max98371_i2c_probe,
	434	.remove = max98371_i2c_remove,
	435	.id_table = max98371_i2c_id,
	436	};
	437
	438	module_i2c_driver(max98371_i2c_driver);
	439
	440	MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>");
	441	MODULE_DESCRIPTION("ALSA SoC MAX98371 driver");
	442	MODULE_LICENSE("GPL");