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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
b25c6b7d WY |
2 | /* |
3 | * MFD driver for Active-semi ACT8945a PMIC | |
4 | * | |
5 | * Copyright (C) 2015 Atmel Corporation. | |
6 | * | |
7 | * Author: Wenyou Yang <wenyou.yang@atmel.com> | |
b25c6b7d WY |
8 | */ |
9 | ||
10 | #include <linux/i2c.h> | |
11 | #include <linux/mfd/core.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/of_device.h> | |
14 | #include <linux/regmap.h> | |
15 | ||
16 | static const struct mfd_cell act8945a_devs[] = { | |
17 | { | |
18 | .name = "act8945a-regulator", | |
19 | }, | |
20 | { | |
21 | .name = "act8945a-charger", | |
7235711a | 22 | .of_compatible = "active-semi,act8945a-charger", |
b25c6b7d WY |
23 | }, |
24 | }; | |
25 | ||
26 | static const struct regmap_config act8945a_regmap_config = { | |
27 | .reg_bits = 8, | |
28 | .val_bits = 8, | |
29 | }; | |
30 | ||
31 | static int act8945a_i2c_probe(struct i2c_client *i2c, | |
32 | const struct i2c_device_id *id) | |
33 | { | |
34 | int ret; | |
35 | struct regmap *regmap; | |
36 | ||
37 | regmap = devm_regmap_init_i2c(i2c, &act8945a_regmap_config); | |
38 | if (IS_ERR(regmap)) { | |
39 | ret = PTR_ERR(regmap); | |
40 | dev_err(&i2c->dev, "regmap init failed: %d\n", ret); | |
41 | return ret; | |
42 | } | |
43 | ||
44 | i2c_set_clientdata(i2c, regmap); | |
45 | ||
f9932c6e LD |
46 | ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE, |
47 | act8945a_devs, ARRAY_SIZE(act8945a_devs), | |
48 | NULL, 0, NULL); | |
b25c6b7d WY |
49 | if (ret) { |
50 | dev_err(&i2c->dev, "Failed to add sub devices\n"); | |
51 | return ret; | |
52 | } | |
53 | ||
54 | return 0; | |
55 | } | |
56 | ||
b25c6b7d WY |
57 | static const struct i2c_device_id act8945a_i2c_id[] = { |
58 | { "act8945a", 0 }, | |
59 | {} | |
60 | }; | |
61 | MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id); | |
62 | ||
63 | static const struct of_device_id act8945a_of_match[] = { | |
64 | { .compatible = "active-semi,act8945a", }, | |
65 | {}, | |
66 | }; | |
67 | MODULE_DEVICE_TABLE(of, act8945a_of_match); | |
68 | ||
69 | static struct i2c_driver act8945a_i2c_driver = { | |
70 | .driver = { | |
71 | .name = "act8945a", | |
72 | .of_match_table = of_match_ptr(act8945a_of_match), | |
73 | }, | |
74 | .probe = act8945a_i2c_probe, | |
b25c6b7d WY |
75 | .id_table = act8945a_i2c_id, |
76 | }; | |
77 | ||
78 | static int __init act8945a_i2c_init(void) | |
79 | { | |
80 | return i2c_add_driver(&act8945a_i2c_driver); | |
81 | } | |
82 | subsys_initcall(act8945a_i2c_init); | |
83 | ||
84 | static void __exit act8945a_i2c_exit(void) | |
85 | { | |
86 | i2c_del_driver(&act8945a_i2c_driver); | |
87 | } | |
88 | module_exit(act8945a_i2c_exit); | |
89 | ||
90 | MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver"); | |
91 | MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); | |
92 | MODULE_LICENSE("GPL"); |