// SPDX-License-Identifier: GPL-2.0-or-later /* * MFD driver for Active-semi ACT8945a PMIC * * Copyright (C) 2015 Atmel Corporation. * * Author: Wenyou Yang <wenyou.yang@atmel.com> */ #include <linux/i2c.h> #include <linux/mfd/core.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/regmap.h> static const struct mfd_cell act8945a_devs[] = { { .name = "act8945a-regulator", }, { .name = "act8945a-charger", .of_compatible = "active-semi,act8945a-charger", }, }; static const struct regmap_config act8945a_regmap_config = { .reg_bits = 8, .val_bits = 8, }; static int act8945a_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { int ret; struct regmap *regmap; regmap = devm_regmap_init_i2c(i2c, &act8945a_regmap_config); if (IS_ERR(regmap)) { ret = PTR_ERR(regmap); dev_err(&i2c->dev, "regmap init failed: %d\n", ret); return ret; } i2c_set_clientdata(i2c, regmap); ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE, act8945a_devs, ARRAY_SIZE(act8945a_devs), NULL, 0, NULL); if (ret) { dev_err(&i2c->dev, "Failed to add sub devices\n"); return ret; } return 0; } static const struct i2c_device_id act8945a_i2c_id[] = { { "act8945a", 0 }, {} }; MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id); static const struct of_device_id act8945a_of_match[] = { { .compatible = "active-semi,act8945a", }, {}, }; MODULE_DEVICE_TABLE(of, act8945a_of_match); static struct i2c_driver act8945a_i2c_driver = { .driver = { .name = "act8945a", .of_match_table = of_match_ptr(act8945a_of_match), }, .probe = act8945a_i2c_probe, .id_table = act8945a_i2c_id, }; static int __init act8945a_i2c_init(void) { return i2c_add_driver(&act8945a_i2c_driver); } subsys_initcall(act8945a_i2c_init); static void __exit act8945a_i2c_exit(void) { i2c_del_driver(&act8945a_i2c_driver); } module_exit(act8945a_i2c_exit); MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver"); MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); MODULE_LICENSE("GPL");