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Unverified Commit 0f68c396 authored by Alexander Shiyan's avatar Alexander Shiyan Committed by Mark Brown
Browse files

ASoC: cs4341: Add driver for CS4341 DAC 



This patch adds Cirrus Logic CS4341.
This is a very simple, playback only, stereo DAC.

Signed-off-by: default avatarAlexander Shiyan <shc_work@mail.ru>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 22c7d5e7

sound/soc/codecs/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -65,6 +65,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_CS4271_SPI if SPI_MASTER

	select SND_SOC_CS42XX8_I2C if I2C

	select SND_SOC_CS43130 if I2C

	select SND_SOC_CS4341 if SND_SOC_I2C_AND_SPI

	select SND_SOC_CS4349 if I2C

	select SND_SOC_CS47L24 if MFD_CS47L24

	select SND_SOC_CS53L30 if I2C
@@ -542,6 +543,12 @@ config SND_SOC_CS43130 
        tristate "Cirrus Logic CS43130 CODEC"

        depends on I2C



config SND_SOC_CS4341

	tristate "Cirrus Logic CS4341 CODEC"

	depends on I2C || SPI_MASTER

	select REGMAP_I2C if I2C

	select REGMAP_SPI if SPI_MASTER



# Cirrus Logic CS4349 HiFi DAC

config SND_SOC_CS4349

	tristate "Cirrus Logic CS4349 CODEC"

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ snd-soc-cs4271-spi-objs := cs4271-spi.o 
snd-soc-cs42xx8-objs := cs42xx8.o

snd-soc-cs42xx8-i2c-objs := cs42xx8-i2c.o

snd-soc-cs43130-objs := cs43130.o

snd-soc-cs4341-objs := cs4341.o

snd-soc-cs4349-objs := cs4349.o

snd-soc-cs47l24-objs := cs47l24.o

snd-soc-cs53l30-objs := cs53l30.o
@@ -326,6 +327,7 @@ obj-$(CONFIG_SND_SOC_CS4271_SPI) += snd-soc-cs4271-spi.o 
obj-$(CONFIG_SND_SOC_CS42XX8)	+= snd-soc-cs42xx8.o

obj-$(CONFIG_SND_SOC_CS42XX8_I2C) += snd-soc-cs42xx8-i2c.o

obj-$(CONFIG_SND_SOC_CS43130)   += snd-soc-cs43130.o

obj-$(CONFIG_SND_SOC_CS4341)	+= snd-soc-cs4341.o

obj-$(CONFIG_SND_SOC_CS4349)	+= snd-soc-cs4349.o

obj-$(CONFIG_SND_SOC_CS47L24)	+= snd-soc-cs47l24.o

obj-$(CONFIG_SND_SOC_CS53L30)	+= snd-soc-cs53l30.o

sound/soc/codecs/cs4341.c

0 → 100644
+346 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0+ */

/*

 *  Cirrus Logic CS4341A ALSA SoC Codec Driver

 *  Author: Alexander Shiyan <shc_work@mail.ru>

 */



#include <linux/i2c.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/regmap.h>

#include <linux/spi/spi.h>



#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <sound/soc.h>

#include <sound/tlv.h>



#define CS4341_REG_MODE1	0x00

#define CS4341_REG_MODE2	0x01

#define CS4341_REG_MIX		0x02

#define CS4341_REG_VOLA		0x03

#define CS4341_REG_VOLB		0x04



#define CS4341_MODE2_DIF	(7 << 4)

#define CS4341_MODE2_DIF_I2S_24	(0 << 4)

#define CS4341_MODE2_DIF_I2S_16	(1 << 4)

#define CS4341_MODE2_DIF_LJ_24	(2 << 4)

#define CS4341_MODE2_DIF_RJ_24	(3 << 4)

#define CS4341_MODE2_DIF_RJ_16	(5 << 4)

#define CS4341_VOLX_MUTE	(1 << 7)



struct cs4341_priv {

	unsigned int		fmt;

	struct regmap		*regmap;

	struct regmap_config	regcfg;

};



static const struct reg_default cs4341_reg_defaults[] = {

	{ CS4341_REG_MODE1,	0x00 },

	{ CS4341_REG_MODE2,	0x82 },

	{ CS4341_REG_MIX,	0x49 },

	{ CS4341_REG_VOLA,	0x80 },

	{ CS4341_REG_VOLB,	0x80 },

};



static int cs4341_set_fmt(struct snd_soc_dai *dai, unsigned int format)

{

	struct snd_soc_component *component = dai->component;

	struct cs4341_priv *cs4341 = snd_soc_component_get_drvdata(component);



	switch (format & SND_SOC_DAIFMT_MASTER_MASK) {

	case SND_SOC_DAIFMT_CBS_CFS:

		break;

	default:

		return -EINVAL;

	}



	switch (format & SND_SOC_DAIFMT_INV_MASK) {

	case SND_SOC_DAIFMT_NB_NF:

		break;

	default:

		return -EINVAL;

	}



	switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {

	case SND_SOC_DAIFMT_I2S:

	case SND_SOC_DAIFMT_LEFT_J:

	case SND_SOC_DAIFMT_RIGHT_J:

		cs4341->fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;

		break;

	default:

		return -EINVAL;

	}



	return 0;

}



static int cs4341_hw_params(struct snd_pcm_substream *substream,

			    struct snd_pcm_hw_params *params,

			    struct snd_soc_dai *dai)

{

	struct snd_soc_component *component = dai->component;

	struct cs4341_priv *cs4341 = snd_soc_component_get_drvdata(component);

	unsigned int mode = 0;

	int b24 = 0;



	switch (params_format(params)) {

	case SNDRV_PCM_FORMAT_S24_LE:

		b24 = 1;

		break;

	case SNDRV_PCM_FORMAT_S16_LE:

		break;

	default:

		dev_err(component->dev, "Unsupported PCM format 0x%08x.\n",

			params_format(params));

		return -EINVAL;

	}



	switch (cs4341->fmt) {

	case SND_SOC_DAIFMT_I2S:

		mode = b24 ? CS4341_MODE2_DIF_I2S_24 : CS4341_MODE2_DIF_I2S_16;

		break;

	case SND_SOC_DAIFMT_LEFT_J:

		mode = CS4341_MODE2_DIF_LJ_24;

		break;

	case SND_SOC_DAIFMT_RIGHT_J:

		mode = b24 ? CS4341_MODE2_DIF_RJ_24 : CS4341_MODE2_DIF_RJ_16;

		break;

	default:

		dev_err(component->dev, "Unsupported DAI format 0x%08x.\n",

			cs4341->fmt);

		return -EINVAL;

	}



	return snd_soc_component_update_bits(component, CS4341_REG_MODE2,

					     CS4341_MODE2_DIF, mode);

}



static int cs4341_digital_mute(struct snd_soc_dai *dai, int mute)

{

	struct snd_soc_component *component = dai->component;

	int ret;



	ret = snd_soc_component_update_bits(component, CS4341_REG_VOLA,

					    CS4341_VOLX_MUTE,

					    mute ? CS4341_VOLX_MUTE : 0);

	if (ret < 0)

		return ret;



	return snd_soc_component_update_bits(component, CS4341_REG_VOLB,

					     CS4341_VOLX_MUTE,

					     mute ? CS4341_VOLX_MUTE : 0);

}



static DECLARE_TLV_DB_SCALE(out_tlv, -9000, 100, 0);



static const char * const deemph[] = {

	"None", "44.1k", "48k", "32k",

};



static const struct soc_enum deemph_enum =

	SOC_ENUM_SINGLE(CS4341_REG_MODE2, 2, 4, deemph);



static const char * const srzc[] = {

	"Immediate", "Zero Cross", "Soft Ramp", "SR on ZC",

};



static const struct soc_enum srzc_enum =

	SOC_ENUM_SINGLE(CS4341_REG_MIX, 5, 4, srzc);





static const struct snd_soc_dapm_widget cs4341_dapm_widgets[] = {

	SND_SOC_DAPM_DAC("HiFi DAC", NULL, SND_SOC_NOPM, 0, 0),

	SND_SOC_DAPM_OUTPUT("OutA"),

	SND_SOC_DAPM_OUTPUT("OutB"),

};



static const struct snd_soc_dapm_route cs4341_routes[] = {

	{ "OutA", NULL, "HiFi DAC" },

	{ "OutB", NULL, "HiFi DAC" },

	{ "DAC Playback", NULL, "OutA" },

	{ "DAC Playback", NULL, "OutB" },

};



static const struct snd_kcontrol_new cs4341_controls[] = {

	SOC_DOUBLE_R_TLV("Master Playback Volume",

			 CS4341_REG_VOLA, CS4341_REG_VOLB, 0, 90, 1, out_tlv),

	SOC_ENUM("De-Emphasis Control", deemph_enum),

	SOC_ENUM("Soft Ramp Zero Cross Control", srzc_enum),

	SOC_SINGLE("Auto-Mute Switch", CS4341_REG_MODE2, 7, 1, 0),

	SOC_SINGLE("Popguard Transient Switch", CS4341_REG_MODE2, 1, 1, 0),

};



static const struct snd_soc_dai_ops cs4341_dai_ops = {

	.set_fmt	= cs4341_set_fmt,

	.hw_params	= cs4341_hw_params,

	.digital_mute	= cs4341_digital_mute,

};



static struct snd_soc_dai_driver cs4341_dai = {

	.name			= "cs4341a-hifi",

	.playback		= {

		.stream_name	= "DAC Playback",

		.channels_min	= 1,

		.channels_max	= 2,

		.rates		= SNDRV_PCM_RATE_8000_96000,

		.formats	= SNDRV_PCM_FMTBIT_S16_LE |

				  SNDRV_PCM_FMTBIT_S24_LE,

	},

	.ops			= &cs4341_dai_ops,

	.symmetric_rates	= 1,

};



static const struct snd_soc_component_driver soc_component_cs4341 = {

	.controls		= cs4341_controls,

	.num_controls		= ARRAY_SIZE(cs4341_controls),

	.dapm_widgets		= cs4341_dapm_widgets,

	.num_dapm_widgets	= ARRAY_SIZE(cs4341_dapm_widgets),

	.dapm_routes		= cs4341_routes,

	.num_dapm_routes	= ARRAY_SIZE(cs4341_routes),

	.idle_bias_on		= 1,

	.use_pmdown_time	= 1,

	.endianness		= 1,

	.non_legacy_dai_naming	= 1,

};



static const struct of_device_id __maybe_unused cs4341_dt_ids[] = {

	{ .compatible = "cirrus,cs4341a", },

	{ }

};

MODULE_DEVICE_TABLE(of, cs4341_dt_ids);



static int cs4341_probe(struct device *dev)

{

	struct cs4341_priv *cs4341 = dev_get_drvdata(dev);

	int i;



	for (i = 0; i < ARRAY_SIZE(cs4341_reg_defaults); i++)

		regmap_write(cs4341->regmap, cs4341_reg_defaults[i].reg,

			     cs4341_reg_defaults[i].def);



	return devm_snd_soc_register_component(dev, &soc_component_cs4341,

					       &cs4341_dai, 1);

}



#if defined(CONFIG_I2C)

static int cs4341_i2c_probe(struct i2c_client *i2c,

			    const struct i2c_device_id *id)

{

	struct cs4341_priv *cs4341;



	cs4341 = devm_kzalloc(&i2c->dev, sizeof(*cs4341), GFP_KERNEL);

	if (!cs4341)

		return -ENOMEM;



	i2c_set_clientdata(i2c, cs4341);



	cs4341->regcfg.reg_bits		= 8;

	cs4341->regcfg.val_bits		= 8;

	cs4341->regcfg.max_register	= CS4341_REG_VOLB;

	cs4341->regcfg.cache_type	= REGCACHE_FLAT;

	cs4341->regcfg.reg_defaults	= cs4341_reg_defaults;

	cs4341->regcfg.num_reg_defaults	= ARRAY_SIZE(cs4341_reg_defaults);

	cs4341->regmap = devm_regmap_init_i2c(i2c, &cs4341->regcfg);

	if (IS_ERR(cs4341->regmap))

		return PTR_ERR(cs4341->regmap);



	return cs4341_probe(&i2c->dev);

}



static const struct i2c_device_id cs4341_i2c_id[] = {

	{ "cs4341", 0 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, cs4341_i2c_id);



static struct i2c_driver cs4341_i2c_driver = {

	.driver = {

		.name = "cs4341-i2c",

		.of_match_table = of_match_ptr(cs4341_dt_ids),

	},

	.probe = cs4341_i2c_probe,

	.id_table = cs4341_i2c_id,

};

#endif



#if defined(CONFIG_SPI_MASTER)

static bool cs4341_reg_readable(struct device *dev, unsigned int reg)

{

	return false;

}



static int cs4341_spi_probe(struct spi_device *spi)

{

	struct cs4341_priv *cs4341;

	int ret;



	cs4341 = devm_kzalloc(&spi->dev, sizeof(*cs4341), GFP_KERNEL);

	if (!cs4341)

		return -ENOMEM;



	if (!spi->bits_per_word)

		spi->bits_per_word = 8;

	if (!spi->max_speed_hz)

		spi->max_speed_hz = 6000000;

	ret = spi_setup(spi);

	if (ret)

		return ret;



	spi_set_drvdata(spi, cs4341);



	cs4341->regcfg.reg_bits		= 16;

	cs4341->regcfg.val_bits		= 8;

	cs4341->regcfg.write_flag_mask	= 0x20;

	cs4341->regcfg.max_register	= CS4341_REG_VOLB;

	cs4341->regcfg.cache_type	= REGCACHE_FLAT;

	cs4341->regcfg.readable_reg	= cs4341_reg_readable;

	cs4341->regcfg.reg_defaults	= cs4341_reg_defaults;

	cs4341->regcfg.num_reg_defaults	= ARRAY_SIZE(cs4341_reg_defaults);

	cs4341->regmap = devm_regmap_init_spi(spi, &cs4341->regcfg);

	if (IS_ERR(cs4341->regmap))

		return PTR_ERR(cs4341->regmap);



	return cs4341_probe(&spi->dev);

}



static struct spi_driver cs4341_spi_driver = {

	.driver = {

		.name = "cs4341-spi",

		.of_match_table = of_match_ptr(cs4341_dt_ids),

	},

	.probe = cs4341_spi_probe,

};

#endif



static int __init cs4341_init(void)

{

	int ret = 0;



#if defined(CONFIG_I2C)

	ret = i2c_add_driver(&cs4341_i2c_driver);

	if (ret)

		return ret;

#endif

#if defined(CONFIG_SPI_MASTER)

	ret = spi_register_driver(&cs4341_spi_driver);

#endif



	return ret;

}

module_init(cs4341_init);



static void __exit cs4341_exit(void)

{

#if defined(CONFIG_I2C)

	i2c_del_driver(&cs4341_i2c_driver);

#endif

#if defined(CONFIG_SPI_MASTER)

	spi_unregister_driver(&cs4341_spi_driver);

#endif

}

module_exit(cs4341_exit);



MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");

MODULE_DESCRIPTION("Cirrus Logic CS4341 ALSA SoC Codec Driver");

MODULE_LICENSE("GPL");