xref: /linux/sound/soc/codecs/cs35l45-i2c.c (revision 33e02dc69afbd8f1b85a51d74d72f139ba4ca623)
1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // cs35l45-i2c.c -- CS35L45 I2C driver
4 //
5 // Copyright 2019-2022 Cirrus Logic, Inc.
6 //
7 // Author: James Schulman <james.schulman@cirrus.com>
8 
9 #include <linux/device.h>
10 #include <linux/module.h>
11 #include <linux/i2c.h>
12 #include <linux/regmap.h>
13 
14 #include "cs35l45.h"
15 
cs35l45_i2c_probe(struct i2c_client * client)16 static int cs35l45_i2c_probe(struct i2c_client *client)
17 {
18 	struct cs35l45_private *cs35l45;
19 	struct device *dev = &client->dev;
20 	int ret;
21 
22 	cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL);
23 	if (!cs35l45)
24 		return -ENOMEM;
25 
26 	i2c_set_clientdata(client, cs35l45);
27 	cs35l45->regmap = devm_regmap_init_i2c(client, &cs35l45_i2c_regmap);
28 	if (IS_ERR(cs35l45->regmap)) {
29 		ret = PTR_ERR(cs35l45->regmap);
30 		dev_err(dev, "Failed to allocate register map: %d\n", ret);
31 		return ret;
32 	}
33 
34 	cs35l45->dev = dev;
35 	cs35l45->irq = client->irq;
36 	cs35l45->bus_type = CONTROL_BUS_I2C;
37 	cs35l45->i2c_addr = client->addr;
38 
39 	return cs35l45_probe(cs35l45);
40 }
41 
cs35l45_i2c_remove(struct i2c_client * client)42 static void cs35l45_i2c_remove(struct i2c_client *client)
43 {
44 	struct cs35l45_private *cs35l45 = i2c_get_clientdata(client);
45 
46 	cs35l45_remove(cs35l45);
47 }
48 
49 static const struct of_device_id cs35l45_of_match[] = {
50 	{ .compatible = "cirrus,cs35l45" },
51 	{},
52 };
53 MODULE_DEVICE_TABLE(of, cs35l45_of_match);
54 
55 static const struct i2c_device_id cs35l45_id_i2c[] = {
56 	{ "cs35l45" },
57 	{}
58 };
59 MODULE_DEVICE_TABLE(i2c, cs35l45_id_i2c);
60 
61 static struct i2c_driver cs35l45_i2c_driver = {
62 	.driver = {
63 		.name		= "cs35l45",
64 		.of_match_table = cs35l45_of_match,
65 		.pm		= pm_ptr(&cs35l45_pm_ops),
66 	},
67 	.id_table	= cs35l45_id_i2c,
68 	.probe		= cs35l45_i2c_probe,
69 	.remove		= cs35l45_i2c_remove,
70 };
71 module_i2c_driver(cs35l45_i2c_driver);
72 
73 MODULE_DESCRIPTION("I2C CS35L45 driver");
74 MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
75 MODULE_LICENSE("GPL");
76 MODULE_IMPORT_NS(SND_SOC_CS35L45);
77