Merge branches 'acpica-fixes', 'acpi-video' and 'acpi-processor'
[cascardo/linux.git] / drivers / mfd / act8945a.c
1 /*
2  * MFD driver for Active-semi ACT8945a PMIC
3  *
4  * Copyright (C) 2015 Atmel Corporation.
5  *
6  * Author: Wenyou Yang <wenyou.yang@atmel.com>
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under  the terms of the GNU General  Public License as published by the
10  * Free Software Foundation;  either version 2 of the License, or (at your
11  * option) any later version.
12  */
13
14 #include <linux/i2c.h>
15 #include <linux/mfd/core.h>
16 #include <linux/module.h>
17 #include <linux/of_device.h>
18 #include <linux/regmap.h>
19
20 static const struct mfd_cell act8945a_devs[] = {
21         {
22                 .name = "act8945a-regulator",
23         },
24         {
25                 .name = "act8945a-charger",
26         },
27 };
28
29 static const struct regmap_config act8945a_regmap_config = {
30         .reg_bits = 8,
31         .val_bits = 8,
32 };
33
34 static int act8945a_i2c_probe(struct i2c_client *i2c,
35                               const struct i2c_device_id *id)
36 {
37         int ret;
38         struct regmap *regmap;
39
40         regmap = devm_regmap_init_i2c(i2c, &act8945a_regmap_config);
41         if (IS_ERR(regmap)) {
42                 ret = PTR_ERR(regmap);
43                 dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
44                 return ret;
45         }
46
47         i2c_set_clientdata(i2c, regmap);
48
49         ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
50                                    act8945a_devs, ARRAY_SIZE(act8945a_devs),
51                                    NULL, 0, NULL);
52         if (ret) {
53                 dev_err(&i2c->dev, "Failed to add sub devices\n");
54                 return ret;
55         }
56
57         return 0;
58 }
59
60 static const struct i2c_device_id act8945a_i2c_id[] = {
61         { "act8945a", 0 },
62         {}
63 };
64 MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id);
65
66 static const struct of_device_id act8945a_of_match[] = {
67         { .compatible = "active-semi,act8945a", },
68         {},
69 };
70 MODULE_DEVICE_TABLE(of, act8945a_of_match);
71
72 static struct i2c_driver act8945a_i2c_driver = {
73         .driver = {
74                    .name = "act8945a",
75                    .of_match_table = of_match_ptr(act8945a_of_match),
76         },
77         .probe = act8945a_i2c_probe,
78         .id_table = act8945a_i2c_id,
79 };
80
81 static int __init act8945a_i2c_init(void)
82 {
83         return i2c_add_driver(&act8945a_i2c_driver);
84 }
85 subsys_initcall(act8945a_i2c_init);
86
87 static void __exit act8945a_i2c_exit(void)
88 {
89         i2c_del_driver(&act8945a_i2c_driver);
90 }
91 module_exit(act8945a_i2c_exit);
92
93 MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver");
94 MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
95 MODULE_LICENSE("GPL");