mirror of
https://github.com/torvalds/linux.git
synced 2024-12-21 10:31:54 +00:00
aaf0f3aeeb
Signed-off-by: Andreas Irestål <andire@axis.com> Signed-off-by: Mark Brown <broonie@kernel.org>
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/*
|
|
* Driver for ADAU1361/ADAU1461/ADAU1761/ADAU1961 codec
|
|
*
|
|
* 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 "adau1761.h"
|
|
|
|
static void adau1761_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 adau1761_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 = adau1761_regmap_config;
|
|
config.val_bits = 8;
|
|
config.reg_bits = 24;
|
|
config.read_flag_mask = 0x1;
|
|
|
|
return adau1761_probe(&spi->dev,
|
|
devm_regmap_init_spi(spi, &config),
|
|
id->driver_data, adau1761_spi_switch_mode);
|
|
}
|
|
|
|
static int adau1761_spi_remove(struct spi_device *spi)
|
|
{
|
|
snd_soc_unregister_codec(&spi->dev);
|
|
return 0;
|
|
}
|
|
|
|
static const struct spi_device_id adau1761_spi_id[] = {
|
|
{ "adau1361", ADAU1361 },
|
|
{ "adau1461", ADAU1761 },
|
|
{ "adau1761", ADAU1761 },
|
|
{ "adau1961", ADAU1361 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(spi, adau1761_spi_id);
|
|
|
|
#if defined(CONFIG_OF)
|
|
static const struct of_device_id adau1761_spi_dt_ids[] = {
|
|
{ .compatible = "adi,adau1361", },
|
|
{ .compatible = "adi,adau1461", },
|
|
{ .compatible = "adi,adau1761", },
|
|
{ .compatible = "adi,adau1961", },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, adau1761_spi_dt_ids);
|
|
#endif
|
|
|
|
static struct spi_driver adau1761_spi_driver = {
|
|
.driver = {
|
|
.name = "adau1761",
|
|
.of_match_table = of_match_ptr(adau1761_spi_dt_ids),
|
|
},
|
|
.probe = adau1761_spi_probe,
|
|
.remove = adau1761_spi_remove,
|
|
.id_table = adau1761_spi_id,
|
|
};
|
|
module_spi_driver(adau1761_spi_driver);
|
|
|
|
MODULE_DESCRIPTION("ASoC ADAU1361/ADAU1461/ADAU1761/ADAU1961 CODEC SPI driver");
|
|
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
|
|
MODULE_LICENSE("GPL");
|