1 /* 1 /*
2 * Cirrus Logic CS42448/CS42888 Audio CODEC DA 2 * Cirrus Logic CS42448/CS42888 Audio CODEC DAI I2C driver
3 * 3 *
4 * Copyright (C) 2014 Freescale Semiconductor, 4 * Copyright (C) 2014 Freescale Semiconductor, Inc.
5 * 5 *
6 * Author: Nicolin Chen <Guangyu.Chen@freescal 6 * Author: Nicolin Chen <Guangyu.Chen@freescale.com>
7 * 7 *
8 * This file is licensed under the terms of th 8 * This file is licensed under the terms of the GNU General Public License
9 * version 2. This program is licensed "as is" 9 * version 2. This program is licensed "as is" without any warranty of any
10 * kind, whether express or implied. 10 * kind, whether express or implied.
11 */ 11 */
12 12
13 #include <linux/i2c.h> 13 #include <linux/i2c.h>
14 #include <linux/module.h> 14 #include <linux/module.h>
15 #include <linux/mod_devicetable.h> !! 15 #include <linux/of_device.h>
16 #include <linux/pm_runtime.h> 16 #include <linux/pm_runtime.h>
17 #include <sound/soc.h> 17 #include <sound/soc.h>
18 18
19 #include "cs42xx8.h" 19 #include "cs42xx8.h"
20 20
>> 21 static const struct of_device_id cs42xx8_of_match[];
>> 22
21 static int cs42xx8_i2c_probe(struct i2c_client 23 static int cs42xx8_i2c_probe(struct i2c_client *i2c)
22 { 24 {
23 int ret; 25 int ret;
24 struct cs42xx8_driver_data *drvdata; 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 }
25 34
26 drvdata = (struct cs42xx8_driver_data !! 35 drvdata = (struct cs42xx8_driver_data *)of_id->data;
27 if (!drvdata) <<
28 return dev_err_probe(&i2c->dev <<
29 "failed t <<
30 36
31 ret = cs42xx8_probe(&i2c->dev, 37 ret = cs42xx8_probe(&i2c->dev,
32 devm_regmap_init_i2c(i2c, &cs4 38 devm_regmap_init_i2c(i2c, &cs42xx8_regmap_config), drvdata);
33 if (ret) 39 if (ret)
34 return ret; 40 return ret;
35 41
36 pm_runtime_enable(&i2c->dev); 42 pm_runtime_enable(&i2c->dev);
37 pm_request_idle(&i2c->dev); 43 pm_request_idle(&i2c->dev);
38 44
39 return 0; 45 return 0;
40 } 46 }
41 47
42 static void cs42xx8_i2c_remove(struct i2c_clie 48 static void cs42xx8_i2c_remove(struct i2c_client *i2c)
43 { 49 {
44 pm_runtime_disable(&i2c->dev); 50 pm_runtime_disable(&i2c->dev);
45 } 51 }
46 52
47 static const struct of_device_id cs42xx8_of_ma 53 static const struct of_device_id cs42xx8_of_match[] = {
48 { .compatible = "cirrus,cs42448", .dat 54 { .compatible = "cirrus,cs42448", .data = &cs42448_data, },
49 { .compatible = "cirrus,cs42888", .dat 55 { .compatible = "cirrus,cs42888", .data = &cs42888_data, },
50 { /* sentinel */ } 56 { /* sentinel */ }
51 }; 57 };
52 MODULE_DEVICE_TABLE(of, cs42xx8_of_match); 58 MODULE_DEVICE_TABLE(of, cs42xx8_of_match);
53 59
54 static const struct i2c_device_id cs42xx8_i2c_ 60 static const struct i2c_device_id cs42xx8_i2c_id[] = {
55 {"cs42448", (kernel_ulong_t)&cs42448_d 61 {"cs42448", (kernel_ulong_t)&cs42448_data},
56 {"cs42888", (kernel_ulong_t)&cs42888_d 62 {"cs42888", (kernel_ulong_t)&cs42888_data},
57 {} 63 {}
58 }; 64 };
59 MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id); 65 MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id);
60 66
61 static struct i2c_driver cs42xx8_i2c_driver = 67 static struct i2c_driver cs42xx8_i2c_driver = {
62 .driver = { 68 .driver = {
63 .name = "cs42xx8", 69 .name = "cs42xx8",
64 .pm = &cs42xx8_pm, 70 .pm = &cs42xx8_pm,
65 .of_match_table = cs42xx8_of_m 71 .of_match_table = cs42xx8_of_match,
66 }, 72 },
67 .probe = cs42xx8_i2c_probe, !! 73 .probe_new = cs42xx8_i2c_probe,
68 .remove = cs42xx8_i2c_remove, 74 .remove = cs42xx8_i2c_remove,
69 .id_table = cs42xx8_i2c_id, 75 .id_table = cs42xx8_i2c_id,
70 }; 76 };
71 77
72 module_i2c_driver(cs42xx8_i2c_driver); 78 module_i2c_driver(cs42xx8_i2c_driver);
73 79
74 MODULE_DESCRIPTION("Cirrus Logic CS42448/CS428 80 MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec I2C Driver");
75 MODULE_AUTHOR("Freescale Semiconductor, Inc.") 81 MODULE_AUTHOR("Freescale Semiconductor, Inc.");
76 MODULE_LICENSE("GPL"); 82 MODULE_LICENSE("GPL");
77 83
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