1/*
2 * wm8350-i2c.c  --  Generic I2C driver for Wolfson WM8350 PMIC
3 *
4 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
5 *
6 * Author: Liam Girdwood
7 *         linux@wolfsonmicro.com
8 *
9 *  This program is free software; you can redistribute  it and/or modify it
10 *  under  the terms of  the GNU General  Public License as published by the
11 *  Free Software Foundation;  either version 2 of the  License, or (at your
12 *  option) any later version.
13 *
14 */
15
16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/err.h>
19#include <linux/init.h>
20#include <linux/i2c.h>
21#include <linux/platform_device.h>
22#include <linux/mfd/wm8350/core.h>
23#include <linux/regmap.h>
24#include <linux/slab.h>
25
26static int wm8350_i2c_probe(struct i2c_client *i2c,
27			    const struct i2c_device_id *id)
28{
29	struct wm8350 *wm8350;
30	struct wm8350_platform_data *pdata = dev_get_platdata(&i2c->dev);
31	int ret = 0;
32
33	wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL);
34	if (wm8350 == NULL)
35		return -ENOMEM;
36
37	wm8350->regmap = devm_regmap_init_i2c(i2c, &wm8350_regmap);
38	if (IS_ERR(wm8350->regmap)) {
39		ret = PTR_ERR(wm8350->regmap);
40		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
41			ret);
42		return ret;
43	}
44
45	i2c_set_clientdata(i2c, wm8350);
46	wm8350->dev = &i2c->dev;
47
48	return wm8350_device_init(wm8350, i2c->irq, pdata);
49}
50
51static int wm8350_i2c_remove(struct i2c_client *i2c)
52{
53	struct wm8350 *wm8350 = i2c_get_clientdata(i2c);
54
55	wm8350_device_exit(wm8350);
56
57	return 0;
58}
59
60static const struct i2c_device_id wm8350_i2c_id[] = {
61	{ "wm8350", 0 },
62	{ "wm8351", 0 },
63	{ "wm8352", 0 },
64	{ }
65};
66MODULE_DEVICE_TABLE(i2c, wm8350_i2c_id);
67
68
69static struct i2c_driver wm8350_i2c_driver = {
70	.driver = {
71		   .name = "wm8350",
72	},
73	.probe = wm8350_i2c_probe,
74	.remove = wm8350_i2c_remove,
75	.id_table = wm8350_i2c_id,
76};
77
78static int __init wm8350_i2c_init(void)
79{
80	return i2c_add_driver(&wm8350_i2c_driver);
81}
82/* init early so consumer devices can complete system boot */
83subsys_initcall(wm8350_i2c_init);
84
85static void __exit wm8350_i2c_exit(void)
86{
87	i2c_del_driver(&wm8350_i2c_driver);
88}
89module_exit(wm8350_i2c_exit);
90
91MODULE_DESCRIPTION("I2C support for the WM8350 AudioPlus PMIC");
92MODULE_LICENSE("GPL");
93