Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 603597c9 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Mark Brown
Browse files

ASoC: Add ADAU1977 CODEC driver 



This patch adds support for the ADAU1977, ADAU1978 and ADAU1979 audio CODEC
devices. They are a family of 4-channel differential input audio ADC devices.
They can be connected to either a SPI or I2C bus. The driver is implemented in
three modules, one main module (adau1977.ko) which implements the device logic
and one module each for SPI (adau1977-spi.ko) and I2C (adau1977-i2c.ko) bus
access.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent a32eb702

include/linux/platform_data/adau1977.h

0 → 100644
+45 −0
Original line number Diff line number Diff line 
/*

 * ADAU1977/ADAU1978/ADAU1979 driver

 *

 * Copyright 2014 Analog Devices Inc.

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

 *

 * Licensed under the GPL-2.

 */



#ifndef __LINUX_PLATFORM_DATA_ADAU1977_H__

#define __LINUX_PLATFORM_DATA_ADAU1977_H__



/**

 * enum adau1977_micbias - ADAU1977 MICBIAS pin voltage setting

 * @ADAU1977_MICBIAS_5V0: MICBIAS is set to 5.0 V

 * @ADAU1977_MICBIAS_5V5: MICBIAS is set to 5.5 V

 * @ADAU1977_MICBIAS_6V0: MICBIAS is set to 6.0 V

 * @ADAU1977_MICBIAS_6V5: MICBIAS is set to 6.5 V

 * @ADAU1977_MICBIAS_7V0: MICBIAS is set to 7.0 V

 * @ADAU1977_MICBIAS_7V5: MICBIAS is set to 7.5 V

 * @ADAU1977_MICBIAS_8V0: MICBIAS is set to 8.0 V

 * @ADAU1977_MICBIAS_8V5: MICBIAS is set to 8.5 V

 * @ADAU1977_MICBIAS_9V0: MICBIAS is set to 9.0 V

 */

enum adau1977_micbias {

	ADAU1977_MICBIAS_5V0 = 0x0,

	ADAU1977_MICBIAS_5V5 = 0x1,

	ADAU1977_MICBIAS_6V0 = 0x2,

	ADAU1977_MICBIAS_6V5 = 0x3,

	ADAU1977_MICBIAS_7V0 = 0x4,

	ADAU1977_MICBIAS_7V5 = 0x5,

	ADAU1977_MICBIAS_8V0 = 0x6,

	ADAU1977_MICBIAS_8V5 = 0x7,

	ADAU1977_MICBIAS_9V0 = 0x8,

};



/**

 * struct adau1977_platform_data - Platform configuration data for the ADAU1977

 * @micbias: Specifies the voltage for the MICBIAS pin

 */

struct adau1977_platform_data {

	enum adau1977_micbias micbias;

};



#endif

sound/soc/codecs/Kconfig

+15 −0
Original line number Diff line number Diff line
@@ -24,6 +24,8 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_ADAU1373 if I2C

	select SND_SOC_ADAV801 if SPI_MASTER

	select SND_SOC_ADAV803 if I2C

	select SND_SOC_ADAU1977_SPI if SPI_MASTER

	select SND_SOC_ADAU1977_I2C if I2C

	select SND_SOC_ADAU1701 if I2C

	select SND_SOC_ADS117X

	select SND_SOC_AK4104 if SPI_MASTER
@@ -200,6 +202,19 @@ config SND_SOC_ADAU1701 
config SND_SOC_ADAU1373

	tristate



config SND_SOC_ADAU1977

	tristate



config SND_SOC_ADAU1977_SPI

	tristate

	select SND_SOC_ADAU1977

	select REGMAP_SPI



config SND_SOC_ADAU1977_I2C

	tristate

	select SND_SOC_ADAU1977

	select REGMAP_I2C



config SND_SOC_ADAV80X

	tristate

sound/soc/codecs/Makefile

+6 −0
Original line number Diff line number Diff line
@@ -7,6 +7,9 @@ snd-soc-ad1980-objs := ad1980.o 
snd-soc-ad73311-objs := ad73311.o

snd-soc-adau1701-objs := adau1701.o

snd-soc-adau1373-objs := adau1373.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-adav80x-objs := adav80x.o

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

snd-soc-adav803-objs := adav803.o
@@ -139,6 +142,9 @@ obj-$(CONFIG_SND_SOC_AD193X) += snd-soc-ad193x.o 
obj-$(CONFIG_SND_SOC_AD1980)	+= snd-soc-ad1980.o

obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o

obj-$(CONFIG_SND_SOC_ADAU1373)	+= snd-soc-adau1373.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_ADAU1701)  += snd-soc-adau1701.o

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

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

sound/soc/codecs/adau1977-i2c.c

0 → 100644
+59 −0
Original line number Diff line number Diff line 
/*

 * ADAU1977/ADAU1978/ADAU1979 driver

 *

 * Copyright 2014 Analog Devices Inc.

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

 *

 * Licensed under the GPL-2.

 */



#include <linux/i2c.h>

#include <linux/mod_devicetable.h>

#include <linux/module.h>

#include <linux/regmap.h>

#include <sound/soc.h>



#include "adau1977.h"



static int adau1977_i2c_probe(struct i2c_client *client,

	const struct i2c_device_id *id)

{

	struct regmap_config config;



	config = adau1977_regmap_config;

	config.val_bits = 8;

	config.reg_bits = 8;



	return adau1977_probe(&client->dev,

		devm_regmap_init_i2c(client, &config),

		id->driver_data, NULL);

}



static int adau1977_i2c_remove(struct i2c_client *client)

{

	snd_soc_unregister_codec(&client->dev);

	return 0;

}



static const struct i2c_device_id adau1977_i2c_ids[] = {

	{ "adau1977", ADAU1977 },

	{ "adau1978", ADAU1978 },

	{ "adau1979", ADAU1978 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, adau1977_i2c_ids);



static struct i2c_driver adau1977_i2c_driver = {

	.driver = {

		.name = "adau1977",

		.owner = THIS_MODULE,

	},

	.probe = adau1977_i2c_probe,

	.remove = adau1977_i2c_remove,

	.id_table = adau1977_i2c_ids,

};

module_i2c_driver(adau1977_i2c_driver);



MODULE_DESCRIPTION("ASoC ADAU1977/ADAU1978/ADAU1979 driver");

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

MODULE_LICENSE("GPL");

sound/soc/codecs/adau1977-spi.c

0 → 100644
+76 −0
Original line number Diff line number Diff line 
/*

 * ADAU1977/ADAU1978/ADAU1979 driver

 *

 * Copyright 2014 Analog Devices Inc.

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

 *

 * Licensed under the GPL-2.

 */



#include <linux/mod_devicetable.h>

#include <linux/module.h>

#include <linux/regmap.h>

#include <linux/spi/spi.h>

#include <sound/soc.h>



#include "adau1977.h"



static void adau1977_spi_switch_mode(struct device *dev)

{

	struct spi_device *spi = to_spi_device(dev);



	/*

	 * To get the device into SPI mode CLATCH has to be pulled low three

	 * times.  Do this by issuing three dummy reads.

	 */

	spi_w8r8(spi, 0x00);

	spi_w8r8(spi, 0x00);

	spi_w8r8(spi, 0x00);

}



static int adau1977_spi_probe(struct spi_device *spi)

{

	const struct spi_device_id *id = spi_get_device_id(spi);

	struct regmap_config config;



	if (!id)

		return -EINVAL;



	config = adau1977_regmap_config;

	config.val_bits = 8;

	config.reg_bits = 16;

	config.read_flag_mask = 0x1;



	return adau1977_probe(&spi->dev,

		devm_regmap_init_spi(spi, &config),

		id->driver_data, adau1977_spi_switch_mode);

}



static int adau1977_spi_remove(struct spi_device *spi)

{

	snd_soc_unregister_codec(&spi->dev);

	return 0;

}



static const struct spi_device_id adau1977_spi_ids[] = {

	{ "adau1977", ADAU1977 },

	{ "adau1978", ADAU1978 },

	{ "adau1979", ADAU1978 },

	{ }

};

MODULE_DEVICE_TABLE(spi, adau1977_spi_ids);



static struct spi_driver adau1977_spi_driver = {

	.driver = {

		.name = "adau1977",

		.owner = THIS_MODULE,

	},

	.probe = adau1977_spi_probe,

	.remove = adau1977_spi_remove,

	.id_table = adau1977_spi_ids,

};

module_spi_driver(adau1977_spi_driver);



MODULE_DESCRIPTION("ASoC ADAU1977/ADAU1978/ADAU1979 driver");

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

MODULE_LICENSE("GPL");