cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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act8945a.c (2056B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      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>
      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
     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			      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
     46	ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
     47				   act8945a_devs, ARRAY_SIZE(act8945a_devs),
     48				   NULL, 0, NULL);
     49	if (ret) {
     50		dev_err(&i2c->dev, "Failed to add sub devices\n");
     51		return ret;
     52	}
     53
     54	return 0;
     55}
     56
     57static const struct i2c_device_id act8945a_i2c_id[] = {
     58	{ "act8945a", 0 },
     59	{}
     60};
     61MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id);
     62
     63static const struct of_device_id act8945a_of_match[] = {
     64	{ .compatible = "active-semi,act8945a", },
     65	{},
     66};
     67MODULE_DEVICE_TABLE(of, act8945a_of_match);
     68
     69static 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,
     75	.id_table = act8945a_i2c_id,
     76};
     77
     78static int __init act8945a_i2c_init(void)
     79{
     80	return i2c_add_driver(&act8945a_i2c_driver);
     81}
     82subsys_initcall(act8945a_i2c_init);
     83
     84static void __exit act8945a_i2c_exit(void)
     85{
     86	i2c_del_driver(&act8945a_i2c_driver);
     87}
     88module_exit(act8945a_i2c_exit);
     89
     90MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver");
     91MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
     92MODULE_LICENSE("GPL");