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/of_device.h>
16#include <linux/pm_runtime.h>
17#include <sound/soc.h>
18
19#include "cs42xx8.h"
20
21static const struct of_device_id cs42xx8_of_match[];
22
23static int cs42xx8_i2c_probe(struct i2c_client *i2c)
24{
25	int ret;
26	struct cs42xx8_driver_data *drvdata;
27	const struct of_device_id *of_id;
28
29	of_id = of_match_device(cs42xx8_of_match, &i2c->dev);
30	if (!of_id) {
31		dev_err(&i2c->dev, "failed to find driver data\n");
32		return -EINVAL;
33	}
34
35	drvdata = (struct cs42xx8_driver_data *)of_id->data;
36
37	ret = cs42xx8_probe(&i2c->dev,
38		devm_regmap_init_i2c(i2c, &cs42xx8_regmap_config), drvdata);
39	if (ret)
40		return ret;
41
42	pm_runtime_enable(&i2c->dev);
43	pm_request_idle(&i2c->dev);
44
45	return 0;
46}
47
48static void cs42xx8_i2c_remove(struct i2c_client *i2c)
49{
50	pm_runtime_disable(&i2c->dev);
51}
52
53static const struct of_device_id cs42xx8_of_match[] = {
54	{ .compatible = "cirrus,cs42448", .data = &cs42448_data, },
55	{ .compatible = "cirrus,cs42888", .data = &cs42888_data, },
56	{ /* sentinel */ }
57};
58MODULE_DEVICE_TABLE(of, cs42xx8_of_match);
59
60static const struct i2c_device_id cs42xx8_i2c_id[] = {
61	{"cs42448", (kernel_ulong_t)&cs42448_data},
62	{"cs42888", (kernel_ulong_t)&cs42888_data},
63	{}
64};
65MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id);
66
67static struct i2c_driver cs42xx8_i2c_driver = {
68	.driver = {
69		.name = "cs42xx8",
70		.pm = &cs42xx8_pm,
71		.of_match_table = cs42xx8_of_match,
72	},
73	.probe = cs42xx8_i2c_probe,
74	.remove = cs42xx8_i2c_remove,
75	.id_table = cs42xx8_i2c_id,
76};
77
78module_i2c_driver(cs42xx8_i2c_driver);
79
80MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec I2C Driver");
81MODULE_AUTHOR("Freescale Semiconductor, Inc.");
82MODULE_LICENSE("GPL");
83