Merge remote-tracking branch 'asoc/fix/samsung' into asoc-linus
[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / mfd / da9055-i2c.c
1  /* I2C access for DA9055 PMICs.
2  *
3  * Copyright(c) 2012 Dialog Semiconductor Ltd.
4  *
5  * Author: David Dajun Chen <dchen@diasemi.com>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  */
13
14 #include <linux/module.h>
15 #include <linux/device.h>
16 #include <linux/i2c.h>
17 #include <linux/err.h>
18
19 #include <linux/mfd/da9055/core.h>
20
21 static int da9055_i2c_probe(struct i2c_client *i2c,
22                                       const struct i2c_device_id *id)
23 {
24         struct da9055 *da9055;
25         int ret;
26
27         da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);
28         if (!da9055)
29                 return -ENOMEM;
30
31         da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);
32         if (IS_ERR(da9055->regmap)) {
33                 ret = PTR_ERR(da9055->regmap);
34                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
35                         ret);
36                 return ret;
37         }
38
39         da9055->dev = &i2c->dev;
40         da9055->chip_irq = i2c->irq;
41
42         i2c_set_clientdata(i2c, da9055);
43
44         return da9055_device_init(da9055);
45 }
46
47 static int da9055_i2c_remove(struct i2c_client *i2c)
48 {
49         struct da9055 *da9055 = i2c_get_clientdata(i2c);
50
51         da9055_device_exit(da9055);
52
53         return 0;
54 }
55
56 static struct i2c_device_id da9055_i2c_id[] = {
57         {"da9055-pmic", 0},
58         { }
59 };
60
61 static struct i2c_driver da9055_i2c_driver = {
62         .probe = da9055_i2c_probe,
63         .remove = da9055_i2c_remove,
64         .id_table = da9055_i2c_id,
65         .driver = {
66                 .name = "da9055",
67                 .owner = THIS_MODULE,
68         },
69 };
70
71 static int __init da9055_i2c_init(void)
72 {
73         int ret;
74
75         ret = i2c_add_driver(&da9055_i2c_driver);
76         if (ret != 0) {
77                 pr_err("DA9055 I2C registration failed %d\n", ret);
78                 return ret;
79         }
80
81         return 0;
82 }
83 subsys_initcall(da9055_i2c_init);
84
85 static void __exit da9055_i2c_exit(void)
86 {
87         i2c_del_driver(&da9055_i2c_driver);
88 }
89 module_exit(da9055_i2c_exit);
90
91 MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
92 MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");
93 MODULE_LICENSE("GPL");