projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b25c6b7d WY |
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 = mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE, act8945a_devs, | |
| 50 | ARRAY_SIZE(act8945a_devs), NULL, 0, NULL); | |
| 51 | if (ret) { | |
| 52 | dev_err(&i2c->dev, "Failed to add sub devices\n"); | |
| 53 | return ret; | |
| 54 | } | |
| 55 | ||
| 56 | return 0; | |
| 57 | } | |
| 58 | ||
| 59 | static int act8945a_i2c_remove(struct i2c_client *i2c) | |
| 60 | { | |
| 61 | mfd_remove_devices(&i2c->dev); | |
| 62 | ||
| 63 | return 0; | |
| 64 | } | |
| 65 | ||
| 66 | static const struct i2c_device_id act8945a_i2c_id[] = { | |
| 67 | { "act8945a", 0 }, | |
| 68 | {} | |
| 69 | }; | |
| 70 | MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id); | |
| 71 | ||
| 72 | static const struct of_device_id act8945a_of_match[] = { | |
| 73 | { .compatible = "active-semi,act8945a", }, | |
| 74 | {}, | |
| 75 | }; | |
| 76 | MODULE_DEVICE_TABLE(of, act8945a_of_match); | |
| 77 | ||
| 78 | static struct i2c_driver act8945a_i2c_driver = { | |
| 79 | .driver = { | |
| 80 | .name = "act8945a", | |
| 81 | .of_match_table = of_match_ptr(act8945a_of_match), | |
| 82 | }, | |
| 83 | .probe = act8945a_i2c_probe, | |
| 84 | .remove = act8945a_i2c_remove, | |
| 85 | .id_table = act8945a_i2c_id, | |
| 86 | }; | |
| 87 | ||
| 88 | static int __init act8945a_i2c_init(void) | |
| 89 | { | |
| 90 | return i2c_add_driver(&act8945a_i2c_driver); | |
| 91 | } | |
| 92 | subsys_initcall(act8945a_i2c_init); | |
| 93 | ||
| 94 | static void __exit act8945a_i2c_exit(void) | |
| 95 | { | |
| 96 | i2c_del_driver(&act8945a_i2c_driver); | |
| 97 | } | |
| 98 | module_exit(act8945a_i2c_exit); | |
| 99 | ||
| 100 | MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver"); | |
| 101 | MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); | |
| 102 | MODULE_LICENSE("GPL"); |