| 1 | |
| 2 | |
| 3 | * MFD driver for Active-semi ACT8945a PMIC
|
| 4 | *
|
| 5 | * Copyright (C) 2015 Atmel Corporation.
|
| 6 | *
|
| 7 | * Author: Wenyou Yang <[email protected]>
|
| 8 |
|
| 9 |
|
| 10 | #include <linux/i2c.h>
|
| 11 | #include <linux/mfd/core.h>
|
| 12 | #include <linux/module.h>
|
| 13 | #include <linux/of.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",
|
| 22 | .of_compatible = "active-semi,act8945a-charger",
|
| 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 | {
|
| 33 | int ret;
|
| 34 | struct regmap *regmap;
|
| 35 |
|
| 36 | regmap = devm_regmap_init_i2c(i2c, &act8945a_regmap_config);
|
| 37 | if (IS_ERR(regmap)) {
|
| 38 | ret = PTR_ERR(regmap);
|
| 39 | dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
|
| 40 | return ret;
|
| 41 | }
|
| 42 |
|
| 43 | i2c_set_clientdata(i2c, regmap);
|
| 44 |
|
| 45 | ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
|
| 46 | act8945a_devs, ARRAY_SIZE(act8945a_devs),
|
| 47 | NULL, 0, NULL);
|
| 48 | if (ret) {
|
| 49 | dev_err(&i2c->dev, "Failed to add sub devices\n");
|
| 50 | return ret;
|
| 51 | }
|
| 52 |
|
| 53 | return 0;
|
| 54 | }
|
| 55 |
|
| 56 | static const struct i2c_device_id act8945a_i2c_id[] = {
|
| 57 | { "act8945a" },
|
| 58 | {}
|
| 59 | };
|
| 60 | MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id);
|
| 61 |
|
| 62 | static const struct of_device_id act8945a_of_match[] = {
|
| 63 | { .compatible = "active-semi,act8945a", },
|
| 64 | {},
|
| 65 | };
|
| 66 | MODULE_DEVICE_TABLE(of, act8945a_of_match);
|
| 67 |
|
| 68 | static struct i2c_driver act8945a_i2c_driver = {
|
| 69 | .driver = {
|
| 70 | .name = "act8945a",
|
| 71 | .of_match_table = act8945a_of_match,
|
| 72 | },
|
| 73 | .probe = act8945a_i2c_probe,
|
| 74 | .id_table = act8945a_i2c_id,
|
| 75 | };
|
| 76 |
|
| 77 | static int __init act8945a_i2c_init(void)
|
| 78 | {
|
| 79 | return i2c_add_driver(&act8945a_i2c_driver);
|
| 80 | }
|
| 81 | subsys_initcall(act8945a_i2c_init);
|
| 82 |
|
| 83 | static void __exit act8945a_i2c_exit(void)
|
| 84 | {
|
| 85 | i2c_del_driver(&act8945a_i2c_driver);
|
| 86 | }
|
| 87 | module_exit(act8945a_i2c_exit);
|
| 88 |
|
| 89 | MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver");
|
| 90 | MODULE_AUTHOR("Wenyou Yang <[email protected]>");
|
| 91 | MODULE_LICENSE("GPL");
|