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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * MFD driver for Active-semi ACT8945a PMIC4 *5 * Copyright (C) 2015 Atmel Corporation.6 *7 * Author: Wenyou Yang <wenyou.yang@atmel.com>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 16static 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 26static const struct regmap_config act8945a_regmap_config = {27 .reg_bits = 8,28 .val_bits = 8,29};30 31static 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 56static const struct i2c_device_id act8945a_i2c_id[] = {57 { "act8945a" },58 {}59};60MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id);61 62static const struct of_device_id act8945a_of_match[] = {63 { .compatible = "active-semi,act8945a", },64 {},65};66MODULE_DEVICE_TABLE(of, act8945a_of_match);67 68static 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 77static int __init act8945a_i2c_init(void)78{79 return i2c_add_driver(&act8945a_i2c_driver);80}81subsys_initcall(act8945a_i2c_init);82 83static void __exit act8945a_i2c_exit(void)84{85 i2c_del_driver(&act8945a_i2c_driver);86}87module_exit(act8945a_i2c_exit);88 89MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver");90MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");91MODULE_LICENSE("GPL");92