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ASoC: pcm179x: Add I2C interface driver

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The PCM179x family supports both SPI and I2C. This patch adds support
for the I2C interface.

Signed-off-by: Jacob Siverskog <jacob@teenage.engineering>
Reviewed-by: Johan Hovold <johan@kernel.org>
Acked-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jacob Siverskog
2016-01-22 13:39:54 +01:00
committed by Mark Brown
parent 1b347b6891
commit 70e3e56e6c
4 changed files with 94 additions and 1 deletions
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73
sound/soc/codecs/pcm179x-i2c.c Normal file
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/*
* PCM179X ASoC I2C driver
*
* Copyright (c) Teenage Engineering AB 2016
*
* Jacob Siverskog <jacob@teenage.engineering>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <linux/of.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include "pcm179x.h"
static int pcm179x_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct regmap *regmap;
int ret;
regmap = devm_regmap_init_i2c(client, &pcm179x_regmap_config);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
dev_err(&client->dev, "Failed to allocate regmap: %d\n", ret);
return ret;
}
return pcm179x_common_init(&client->dev, regmap);
}
static int pcm179x_i2c_remove(struct i2c_client *client)
{
return pcm179x_common_exit(&client->dev);
}
static const struct of_device_id pcm179x_of_match[] = {
{ .compatible = "ti,pcm1792a", },
{ }
};
MODULE_DEVICE_TABLE(of, pcm179x_of_match);
static const struct i2c_device_id pcm179x_i2c_ids[] = {
{ "pcm179x", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, pcm179x_i2c_ids);
static struct i2c_driver pcm179x_i2c_driver = {
.driver = {
.name = "pcm179x",
.of_match_table = of_match_ptr(pcm179x_of_match),
},
.id_table = pcm179x_i2c_ids,
.probe = pcm179x_i2c_probe,
.remove = pcm179x_i2c_remove,
};
module_i2c_driver(pcm179x_i2c_driver);
MODULE_DESCRIPTION("ASoC PCM179X I2C driver");
MODULE_AUTHOR("Jacob Siverskog <jacob@teenage.engineering>");
MODULE_LICENSE("GPL");