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Commit a0d3546c authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Mark Brown
Browse files

ASoC: Add ADAU7002 Stereo PDM-to-I2S/TDM Converter driver 



This patch adds support for the ADAU7002 PDM-to-I2S/TDM converter. The
ADAU7002 takes a stereo PDM signal (e.g. from two digital microphones) and
converts it into a I2S/TDM PCM stream. The chip does not have a
programmable control interface and the driver simply describes the static
capabilities of the chip.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 254a1381

sound/soc/codecs/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_ADAU1977_SPI if SPI_MASTER

	select SND_SOC_ADAU1977_I2C if I2C

	select SND_SOC_ADAU1701 if I2C

	select SND_SOC_ADAU7002

	select SND_SOC_ADS117X

	select SND_SOC_AK4104 if SPI_MASTER

	select SND_SOC_AK4535 if I2C
@@ -322,6 +323,9 @@ config SND_SOC_ADAU1977_I2C 
	select SND_SOC_ADAU1977

	select REGMAP_I2C



config SND_SOC_ADAU7002

	tristate "Analog Devices ADAU7002 Stereo PDM-to-I2S/TDM Converter"



config SND_SOC_ADAV80X

	tristate

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ snd-soc-adau1781-spi-objs := adau1781-spi.o 
snd-soc-adau1977-objs := adau1977.o

snd-soc-adau1977-spi-objs := adau1977-spi.o

snd-soc-adau1977-i2c-objs := adau1977-i2c.o

snd-soc-adau7002-objs := adau7002.o

snd-soc-adav80x-objs := adav80x.o

snd-soc-adav801-objs := adav801.o

snd-soc-adav803-objs := adav803.o
@@ -232,6 +233,7 @@ obj-$(CONFIG_SND_SOC_ADAU1781_SPI) += snd-soc-adau1781-spi.o 
obj-$(CONFIG_SND_SOC_ADAU1977)		+= snd-soc-adau1977.o

obj-$(CONFIG_SND_SOC_ADAU1977_SPI)	+= snd-soc-adau1977-spi.o

obj-$(CONFIG_SND_SOC_ADAU1977_I2C)	+= snd-soc-adau1977-i2c.o

obj-$(CONFIG_SND_SOC_ADAU7002)	+= snd-soc-adau7002.o

obj-$(CONFIG_SND_SOC_ADAV80X)  += snd-soc-adav80x.o

obj-$(CONFIG_SND_SOC_ADAV801)  += snd-soc-adav801.o

obj-$(CONFIG_SND_SOC_ADAV803)  += snd-soc-adav803.o

sound/soc/codecs/adau7002.c

0 → 100644
+80 −0
Original line number Diff line number Diff line 
/*

 * ADAU7002 Stereo PDM-to-I2S/TDM converter driver

 *

 * Copyright 2014-2016 Analog Devices

 *  Author: Lars-Peter Clausen <lars@metafoo.de>

 *

 * Licensed under the GPL-2.

 */



#include <linux/init.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/platform_device.h>



#include <sound/soc.h>



static const struct snd_soc_dapm_widget adau7002_widgets[] = {

	SND_SOC_DAPM_INPUT("PDM_DAT"),

	SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0),

};



static const struct snd_soc_dapm_route adau7002_routes[] = {

	{ "Capture", NULL, "PDM_DAT" },

	{ "Capture", NULL, "IOVDD" },

};



static struct snd_soc_dai_driver adau7002_dai = {

	.name = "adau7002-hifi",

	.capture = {

		.stream_name = "Capture",

		.channels_min = 2,

		.channels_max = 2,

		.rates = SNDRV_PCM_RATE_8000_96000,

		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |

			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |

			SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE,

		.sig_bits = 20,

	},

};



static const struct snd_soc_codec_driver adau7002_codec_driver = {

	.dapm_widgets = adau7002_widgets,

	.num_dapm_widgets = ARRAY_SIZE(adau7002_widgets),

	.dapm_routes = adau7002_routes,

	.num_dapm_routes = ARRAY_SIZE(adau7002_routes),

};



static int adau7002_probe(struct platform_device *pdev)

{

	return snd_soc_register_codec(&pdev->dev, &adau7002_codec_driver,

			&adau7002_dai, 1);

}



static int adau7002_remove(struct platform_device *pdev)

{

	snd_soc_unregister_codec(&pdev->dev);

	return 0;

}



#ifdef CONFIG_OF

static const struct of_device_id adau7002_dt_ids[] = {

	{ .compatible = "adi,adau7002", },

	{ }

};

MODULE_DEVICE_TABLE(of, adau7002_dt_ids);

#endif



static struct platform_driver adau7002_driver = {

	.driver = {

		.name = "adau7002",

		.of_match_table	= of_match_ptr(adau7002_dt_ids),

	},

	.probe = adau7002_probe,

	.remove = adau7002_remove,

};

module_platform_driver(adau7002_driver);



MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");

MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver");

MODULE_LICENSE("GPL v2");