1 /*
2 * Cirrus Logic CS42448/CS42888 Audio CODEC DAI I2C driver
3 *
4 * Copyright (C) 2014 Freescale Semiconductor, Inc.
5 *
6 * Author: Nicolin Chen <Guangyu.Chen@freescale.com>
7 *
8 * This file is licensed under the terms of the GNU General Public License
9 * version 2. This program is licensed "as is" without any warranty of any
10 * kind, whether express or implied.
11 */
12
13 #include <linux/i2c.h>
14 #include <linux/module.h>
15 #include <linux/mod_devicetable.h>
16 #include <linux/pm_runtime.h>
17 #include <sound/soc.h>
18
19 #include "cs42xx8.h"
20
21 static int cs42xx8_i2c_probe(struct i2c_client *i2c)
22 {
23 int ret;
24 struct cs42xx8_driver_data *drvdata;
25
26 drvdata = (struct cs42xx8_driver_data *)i2c_get_match_data(i2c);
27 if (!drvdata)
28 return dev_err_probe(&i2c->dev, -EINVAL,
29 "failed to find driver data\n");
30
31 ret = cs42xx8_probe(&i2c->dev,
32 devm_regmap_init_i2c(i2c, &cs42xx8_regmap_config), drvdata);
33 if (ret)
34 return ret;
35
36 pm_runtime_enable(&i2c->dev);
37 pm_request_idle(&i2c->dev);
38
39 return 0;
40 }
41
42 static void cs42xx8_i2c_remove(struct i2c_client *i2c)
43 {
44 pm_runtime_disable(&i2c->dev);
45 }
46
47 static const struct of_device_id cs42xx8_of_match[] = {
48 { .compatible = "cirrus,cs42448", .data = &cs42448_data, },
49 { .compatible = "cirrus,cs42888", .data = &cs42888_data, },
50 { /* sentinel */ }
51 };
52 MODULE_DEVICE_TABLE(of, cs42xx8_of_match);
53
54 static const struct i2c_device_id cs42xx8_i2c_id[] = {
55 {"cs42448", (kernel_ulong_t)&cs42448_data},
56 {"cs42888", (kernel_ulong_t)&cs42888_data},
57 {}
58 };
59 MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id);
60
61 static struct i2c_driver cs42xx8_i2c_driver = {
62 .driver = {
63 .name = "cs42xx8",
64 .pm = &cs42xx8_pm,
65 .of_match_table = cs42xx8_of_match,
66 },
67 .probe = cs42xx8_i2c_probe,
68 .remove = cs42xx8_i2c_remove,
69 .id_table = cs42xx8_i2c_id,
70 };
71
72 module_i2c_driver(cs42xx8_i2c_driver);
73
74 MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec I2C Driver");
75 MODULE_AUTHOR("Freescale Semiconductor, Inc.");
76 MODULE_LICENSE("GPL");
77
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