1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * wm8731-i2c.c -- WM8731 ALSA SoC Audio driver I2C code |
4 | * |
5 | * Copyright 2005 Openedhand Ltd. |
6 | * Copyright 2006-12 Wolfson Microelectronics, plc |
7 | * |
8 | * Author: Richard Purdie <richard@openedhand.com> |
9 | * |
10 | * Based on wm8753.c by Liam Girdwood |
11 | */ |
12 | |
13 | #include <linux/i2c.h> |
14 | #include <linux/mod_devicetable.h> |
15 | #include <linux/module.h> |
16 | |
17 | #include "wm8731.h" |
18 | |
19 | |
20 | static const struct of_device_id wm8731_of_match[] = { |
21 | { .compatible = "wlf,wm8731" , }, |
22 | { } |
23 | }; |
24 | MODULE_DEVICE_TABLE(of, wm8731_of_match); |
25 | |
26 | static int wm8731_i2c_probe(struct i2c_client *i2c) |
27 | { |
28 | struct wm8731_priv *wm8731; |
29 | int ret; |
30 | |
31 | wm8731 = devm_kzalloc(dev: &i2c->dev, size: sizeof(struct wm8731_priv), |
32 | GFP_KERNEL); |
33 | if (wm8731 == NULL) |
34 | return -ENOMEM; |
35 | |
36 | i2c_set_clientdata(client: i2c, data: wm8731); |
37 | |
38 | wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap); |
39 | if (IS_ERR(ptr: wm8731->regmap)) { |
40 | ret = PTR_ERR(ptr: wm8731->regmap); |
41 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n" , |
42 | ret); |
43 | return ret; |
44 | } |
45 | |
46 | return wm8731_init(dev: &i2c->dev, wm8731); |
47 | } |
48 | |
49 | static const struct i2c_device_id wm8731_i2c_id[] = { |
50 | { "wm8731" , 0 }, |
51 | { } |
52 | }; |
53 | MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id); |
54 | |
55 | static struct i2c_driver wm8731_i2c_driver = { |
56 | .driver = { |
57 | .name = "wm8731" , |
58 | .of_match_table = wm8731_of_match, |
59 | }, |
60 | .probe = wm8731_i2c_probe, |
61 | .id_table = wm8731_i2c_id, |
62 | }; |
63 | |
64 | module_i2c_driver(wm8731_i2c_driver); |
65 | |
66 | MODULE_DESCRIPTION("ASoC WM8731 driver - I2C" ); |
67 | MODULE_AUTHOR("Richard Purdie" ); |
68 | MODULE_LICENSE("GPL" ); |
69 | |