blob: 10c6d2da88226e02102cac7bf0c6bf216049ad2f [file] [log] [blame]
Wenyou Yangb25c6b72016-02-05 11:36:29 +08001/*
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
20static const struct mfd_cell act8945a_devs[] = {
21 {
22 .name = "act8945a-regulator",
23 },
24 {
25 .name = "act8945a-charger",
26 },
27};
28
29static const struct regmap_config act8945a_regmap_config = {
30 .reg_bits = 8,
31 .val_bits = 8,
32};
33
34static 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
Laxman Dewanganf9932c62016-04-08 00:12:57 +053049 ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
50 act8945a_devs, ARRAY_SIZE(act8945a_devs),
51 NULL, 0, NULL);
Wenyou Yangb25c6b72016-02-05 11:36:29 +080052 if (ret) {
53 dev_err(&i2c->dev, "Failed to add sub devices\n");
54 return ret;
55 }
56
57 return 0;
58}
59
Wenyou Yangb25c6b72016-02-05 11:36:29 +080060static const struct i2c_device_id act8945a_i2c_id[] = {
61 { "act8945a", 0 },
62 {}
63};
64MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id);
65
66static const struct of_device_id act8945a_of_match[] = {
67 { .compatible = "active-semi,act8945a", },
68 {},
69};
70MODULE_DEVICE_TABLE(of, act8945a_of_match);
71
72static 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,
Wenyou Yangb25c6b72016-02-05 11:36:29 +080078 .id_table = act8945a_i2c_id,
79};
80
81static int __init act8945a_i2c_init(void)
82{
83 return i2c_add_driver(&act8945a_i2c_driver);
84}
85subsys_initcall(act8945a_i2c_init);
86
87static void __exit act8945a_i2c_exit(void)
88{
89 i2c_del_driver(&act8945a_i2c_driver);
90}
91module_exit(act8945a_i2c_exit);
92
93MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver");
94MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
95MODULE_LICENSE("GPL");