Merge remote-tracking branch 'spi/fix/s3c64xx' into spi-linus
[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / mfd / wm8350-i2c.c
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
26 static int wm8350_i2c_probe(struct i2c_client *i2c,
27                             const struct i2c_device_id *id)
28 {
29         struct wm8350 *wm8350;
30         int ret = 0;
31
32         wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL);
33         if (wm8350 == NULL)
34                 return -ENOMEM;
35
36         wm8350->regmap = devm_regmap_init_i2c(i2c, &wm8350_regmap);
37         if (IS_ERR(wm8350->regmap)) {
38                 ret = PTR_ERR(wm8350->regmap);
39                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
40                         ret);
41                 return ret;
42         }
43
44         i2c_set_clientdata(i2c, wm8350);
45         wm8350->dev = &i2c->dev;
46
47         return wm8350_device_init(wm8350, i2c->irq, i2c->dev.platform_data);
48 }
49
50 static int wm8350_i2c_remove(struct i2c_client *i2c)
51 {
52         struct wm8350 *wm8350 = i2c_get_clientdata(i2c);
53
54         wm8350_device_exit(wm8350);
55
56         return 0;
57 }
58
59 static const struct i2c_device_id wm8350_i2c_id[] = {
60        { "wm8350", 0 },
61        { "wm8351", 0 },
62        { "wm8352", 0 },
63        { }
64 };
65 MODULE_DEVICE_TABLE(i2c, wm8350_i2c_id);
66
67
68 static struct i2c_driver wm8350_i2c_driver = {
69         .driver = {
70                    .name = "wm8350",
71                    .owner = THIS_MODULE,
72         },
73         .probe = wm8350_i2c_probe,
74         .remove = wm8350_i2c_remove,
75         .id_table = wm8350_i2c_id,
76 };
77
78 static 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 */
83 subsys_initcall(wm8350_i2c_init);
84
85 static void __exit wm8350_i2c_exit(void)
86 {
87         i2c_del_driver(&wm8350_i2c_driver);
88 }
89 module_exit(wm8350_i2c_exit);
90
91 MODULE_DESCRIPTION("I2C support for the WM8350 AudioPlus PMIC");
92 MODULE_LICENSE("GPL");