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Commit ca2cd6bc authored by anish kumar's avatar anish kumar Committed by Mark Brown
Browse files

ASoC: Add max98371 codec driver 



Signed-off-by: default avataranish kumar <yesanishhere@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f55532a0

Documentation/devicetree/bindings/sound/max98371.txt

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max98371 codec



This device supports I2C mode only.



Required properties:



- compatible : "maxim,max98371"

- reg : The chip select number on the I2C bus



Example:



&i2c {

	max98371: max98371@0x31 {

		compatible = "maxim,max98371";

		reg = <0x31>;

	};

};

sound/soc/codecs/Kconfig

+4 −0
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@@ -79,6 +79,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_MAX98090 if I2C

	select SND_SOC_MAX98095 if I2C

	select SND_SOC_MAX98357A if GPIOLIB

	select SND_SOC_MAX98371 if I2C

	select SND_SOC_MAX9867 if I2C

	select SND_SOC_MAX98925 if I2C

	select SND_SOC_MAX98926 if I2C
@@ -522,6 +523,9 @@ config SND_SOC_MAX98095 
config SND_SOC_MAX98357A

       tristate



config SND_SOC_MAX98371

       tristate



config SND_SOC_MAX9867

	tristate

sound/soc/codecs/Makefile

+1 −0
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@@ -74,6 +74,7 @@ snd-soc-max98088-objs := max98088.o 
snd-soc-max98090-objs := max98090.o

snd-soc-max98095-objs := max98095.o

snd-soc-max98357a-objs := max98357a.o

snd-soc-max98371-objs := max98371.o

snd-soc-max9867-objs := max9867.o

snd-soc-max98925-objs := max98925.o

snd-soc-max98926-objs := max98926.o

sound/soc/codecs/max98371.c

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/*

 * 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 },

	{ 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");

sound/soc/codecs/max98371.h

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/*

 * max98371.h -- MAX98371 ALSA SoC Audio driver

 *

 * Copyright 2011-2012 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.

 */



#ifndef _MAX98371_H

#define _MAX98371_H



#define MAX98371_IRQ_CLEAR1			0x01

#define MAX98371_IRQ_CLEAR2			0x02

#define MAX98371_IRQ_CLEAR3			0x03

#define MAX98371_DAI_CLK			0x10

#define MAX98371_DAI_BSEL_MASK			0xF

#define MAX98371_DAI_BSEL_32			2

#define MAX98371_DAI_BSEL_48			3

#define MAX98371_DAI_BSEL_64			4

#define MAX98371_SPK_SR				0x11

#define MAX98371_SPK_SR_MASK			0xF

#define MAX98371_SPK_SR_32			6

#define MAX98371_SPK_SR_44			7

#define MAX98371_SPK_SR_48			8

#define MAX98371_SPK_SR_88			10

#define MAX98371_SPK_SR_96			11

#define MAX98371_DAI_CHANNEL			0x15

#define MAX98371_CHANNEL_MASK			0x3

#define MAX98371_MONOMIX_SRC			0x18

#define MAX98371_MONOMIX_CFG			0x19

#define MAX98371_HPF				0x1C

#define MAX98371_MONOMIX_SRC_MASK		0xFF

#define MONOMIX_RX_0_1				((0x1)<<(4))

#define M98371_DAI_CHANNEL_I2S			0x3

#define MAX98371_DIGITAL_GAIN			0x2D

#define MAX98371_DIGITAL_GAIN_WIDTH		0x7

#define MAX98371_GAIN				0x2E

#define MAX98371_GAIN_SHIFT			0x4

#define MAX98371_GAIN_WIDTH			0x4

#define MAX98371_DHT_MAX_WIDTH			4

#define MAX98371_FMT				0x14

#define MAX98371_CHANSZ_WIDTH			6

#define MAX98371_FMT_MASK		        ((0x3)<<(MAX98371_CHANSZ_WIDTH))

#define MAX98371_FMT_MODE_MASK		        ((0x7)<<(3))

#define MAX98371_DAI_LEFT		        ((0x1)<<(3))

#define MAX98371_DAI_RIGHT		        ((0x2)<<(3))

#define MAX98371_DAI_CHANSZ_16                  ((1)<<(MAX98371_CHANSZ_WIDTH))

#define MAX98371_DAI_CHANSZ_24                  ((2)<<(MAX98371_CHANSZ_WIDTH))

#define MAX98371_DAI_CHANSZ_32                  ((3)<<(MAX98371_CHANSZ_WIDTH))

#define MAX98371_DHT  0x32

#define MAX98371_DHT_STEP			0x3

#define MAX98371_DHT_GAIN			0x31

#define MAX98371_DHT_GAIN_WIDTH			0x4

#define MAX98371_DHT_ROT_WIDTH			0x4

#define MAX98371_SPK_ENABLE			0x4A

#define MAX98371_GLOBAL_ENABLE			0x50

#define MAX98371_SOFT_RESET			0x51

#define MAX98371_VERSION			0xFF





struct max98371_priv {

	struct regmap *regmap;

	struct snd_soc_codec *codec;

};

#endif