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(&i2c->dev, sizeof(struct wm8731_priv),
32 GFP_KERNEL);
33 if (wm8731 == NULL)
34 return -ENOMEM;
35
36 i2c_set_clientdata(i2c, wm8731);
37
38 wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
39 if (IS_ERR(wm8731->regmap)) {
40 ret = PTR_ERR(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(&i2c->dev, wm8731);
47 }
48
49 static const struct i2c_device_id wm8731_i2c_id[] = {
50 { "wm8731" },
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
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