linux-stable/sound/soc/codecs/adau1977-i2c.c
Lars-Peter Clausen 603597c937 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: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-19 13:36:15 +09:00

59 lines
1.3 KiB
C

/*
* 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");