1. 根目录:
2. sound
3. soc
4. codecs
5. wm8804-i2c.c

/*
 * wm8804-i2c.c  --  WM8804 S/PDIF transceiver driver - I2C
 *
 * Copyright 2015 Cirrus Logic Inc
 *
 * Author: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/i2c.h>

#include "wm8804.h"

static int wm8804_i2c_probe(struct i2c_client *i2c,
			    const struct i2c_device_id *id)
{
	struct regmap *regmap;

	regmap = devm_regmap_init_i2c(i2c, &wm8804_regmap_config);
	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	return wm8804_probe(&i2c->dev, regmap);
}

static int wm8804_i2c_remove(struct i2c_client *i2c)
{
	wm8804_remove(&i2c->dev);
	return 0;
}

static const struct i2c_device_id wm8804_i2c_id[] = {
	{ "wm8804", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id);

static const struct of_device_id wm8804_of_match[] = {
	{ .compatible = "wlf,wm8804", },
	{ }
};
MODULE_DEVICE_TABLE(of, wm8804_of_match);

static struct i2c_driver wm8804_i2c_driver = {
	.driver = {
		.name = "wm8804",
		.pm = &wm8804_pm,
		.of_match_table = wm8804_of_match,
	},
	.probe = wm8804_i2c_probe,
	.remove = wm8804_i2c_remove,
	.id_table = wm8804_i2c_id
};

module_i2c_driver(wm8804_i2c_driver);

MODULE_DESCRIPTION("ASoC WM8804 driver - I2C");
MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");