wm8350-i2c.c
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/*
* wm8350-i2c.c -- Generic I2C driver for Wolfson WM8350 PMIC
*
* Copyright 2007, 2008 Wolfson Microelectronics PLC.
*
* Author: Liam Girdwood
* linux@wolfsonmicro.com
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/mfd/wm8350/core.h>
#include <linux/regmap.h>
#include <linux/slab.h>
static int wm8350_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8350 *wm8350;
struct wm8350_platform_data *pdata = dev_get_platdata(&i2c->dev);
int ret = 0;
wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL);
if (wm8350 == NULL)
return -ENOMEM;
wm8350->regmap = devm_regmap_init_i2c(i2c, &wm8350_regmap);
if (IS_ERR(wm8350->regmap)) {
ret = PTR_ERR(wm8350->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
i2c_set_clientdata(i2c, wm8350);
wm8350->dev = &i2c->dev;
return wm8350_device_init(wm8350, i2c->irq, pdata);
}
static int wm8350_i2c_remove(struct i2c_client *i2c)
{
struct wm8350 *wm8350 = i2c_get_clientdata(i2c);
wm8350_device_exit(wm8350);
return 0;
}
static const struct i2c_device_id wm8350_i2c_id[] = {
{ "wm8350", 0 },
{ "wm8351", 0 },
{ "wm8352", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8350_i2c_id);
static struct i2c_driver wm8350_i2c_driver = {
.driver = {
.name = "wm8350",
.owner = THIS_MODULE,
},
.probe = wm8350_i2c_probe,
.remove = wm8350_i2c_remove,
.id_table = wm8350_i2c_id,
};
static int __init wm8350_i2c_init(void)
{
return i2c_add_driver(&wm8350_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(wm8350_i2c_init);
static void __exit wm8350_i2c_exit(void)
{
i2c_del_driver(&wm8350_i2c_driver);
}
module_exit(wm8350_i2c_exit);
MODULE_DESCRIPTION("I2C support for the WM8350 AudioPlus PMIC");
MODULE_LICENSE("GPL");