2 * wm8350-i2c.c -- Generic I2C driver for Wolfson WM8350 PMIC
4 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
6 * Author: Liam Girdwood
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.
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>
26 static const struct regmap_config wm8350_regmap = {
31 static int wm8350_i2c_probe(struct i2c_client *i2c,
32 const struct i2c_device_id *id)
34 struct wm8350 *wm8350;
37 wm8350 = devm_kzalloc(&i2c->dev, sizeof(struct wm8350), GFP_KERNEL);
41 wm8350->regmap = devm_regmap_init_i2c(i2c, &wm8350_regmap);
42 if (IS_ERR(wm8350->regmap)) {
43 ret = PTR_ERR(wm8350->regmap);
44 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
49 i2c_set_clientdata(i2c, wm8350);
50 wm8350->dev = &i2c->dev;
52 ret = wm8350_device_init(wm8350, i2c->irq, i2c->dev.platform_data);
59 regmap_exit(wm8350->regmap);
63 static int wm8350_i2c_remove(struct i2c_client *i2c)
65 struct wm8350 *wm8350 = i2c_get_clientdata(i2c);
67 wm8350_device_exit(wm8350);
72 static const struct i2c_device_id wm8350_i2c_id[] = {
78 MODULE_DEVICE_TABLE(i2c, wm8350_i2c_id);
81 static struct i2c_driver wm8350_i2c_driver = {
86 .probe = wm8350_i2c_probe,
87 .remove = wm8350_i2c_remove,
88 .id_table = wm8350_i2c_id,
91 static int __init wm8350_i2c_init(void)
93 return i2c_add_driver(&wm8350_i2c_driver);
95 /* init early so consumer devices can complete system boot */
96 subsys_initcall(wm8350_i2c_init);
98 static void __exit wm8350_i2c_exit(void)
100 i2c_del_driver(&wm8350_i2c_driver);
102 module_exit(wm8350_i2c_exit);
104 MODULE_DESCRIPTION("I2C support for the WM8350 AudioPlus PMIC");
105 MODULE_LICENSE("GPL");