xref: /openbmc/linux/sound/soc/codecs/wm8804-i2c.c (revision 62e59c4e)
1 /*
2  * wm8804-i2c.c  --  WM8804 S/PDIF transceiver driver - I2C
3  *
4  * Copyright 2015 Cirrus Logic Inc
5  *
6  * Author: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  */
12 
13 #include <linux/init.h>
14 #include <linux/module.h>
15 #include <linux/i2c.h>
16 #include <linux/acpi.h>
17 
18 #include "wm8804.h"
19 
20 static int wm8804_i2c_probe(struct i2c_client *i2c,
21 			    const struct i2c_device_id *id)
22 {
23 	struct regmap *regmap;
24 
25 	regmap = devm_regmap_init_i2c(i2c, &wm8804_regmap_config);
26 	if (IS_ERR(regmap))
27 		return PTR_ERR(regmap);
28 
29 	return wm8804_probe(&i2c->dev, regmap);
30 }
31 
32 static int wm8804_i2c_remove(struct i2c_client *i2c)
33 {
34 	wm8804_remove(&i2c->dev);
35 	return 0;
36 }
37 
38 static const struct i2c_device_id wm8804_i2c_id[] = {
39 	{ "wm8804", 0 },
40 	{ }
41 };
42 MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id);
43 
44 #if defined(CONFIG_OF)
45 static const struct of_device_id wm8804_of_match[] = {
46 	{ .compatible = "wlf,wm8804", },
47 	{ }
48 };
49 MODULE_DEVICE_TABLE(of, wm8804_of_match);
50 #endif
51 
52 #ifdef CONFIG_ACPI
53 static const struct acpi_device_id wm8804_acpi_match[] = {
54 	{ "1AEC8804", 0 }, /* Wolfson PCI ID + part ID */
55 	{ "10138804", 0 }, /* Cirrus Logic PCI ID + part ID */
56 	{ },
57 };
58 MODULE_DEVICE_TABLE(acpi, wm8804_acpi_match);
59 #endif
60 
61 static struct i2c_driver wm8804_i2c_driver = {
62 	.driver = {
63 		.name = "wm8804",
64 		.pm = &wm8804_pm,
65 		.of_match_table = of_match_ptr(wm8804_of_match),
66 		.acpi_match_table = ACPI_PTR(wm8804_acpi_match),
67 	},
68 	.probe = wm8804_i2c_probe,
69 	.remove = wm8804_i2c_remove,
70 	.id_table = wm8804_i2c_id
71 };
72 
73 module_i2c_driver(wm8804_i2c_driver);
74 
75 MODULE_DESCRIPTION("ASoC WM8804 driver - I2C");
76 MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.wolfsonmicro.com>");
77 MODULE_LICENSE("GPL");
78