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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"); |
93 |
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