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/module.h>
15 #include <linux/of_device.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 
wm8731_i2c_probe(struct i2c_client * i2c)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", 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_new = 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