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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atc260x-i2c.c (1749B)

      1// SPDX-License-Identifier: GPL-2.0+
      2/*
      3 * I2C bus interface for ATC260x PMICs
      4 *
      5 * Copyright (C) 2019 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
      6 * Copyright (C) 2020 Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
      7 */
      8
      9#include <linux/i2c.h>
     10#include <linux/mfd/atc260x/core.h>
     11#include <linux/module.h>
     12#include <linux/of.h>
     13#include <linux/regmap.h>
     14
     15static int atc260x_i2c_probe(struct i2c_client *client,
     16			     const struct i2c_device_id *id)
     17{
     18	struct atc260x *atc260x;
     19	struct regmap_config regmap_cfg;
     20	int ret;
     21
     22	atc260x = devm_kzalloc(&client->dev, sizeof(*atc260x), GFP_KERNEL);
     23	if (!atc260x)
     24		return -ENOMEM;
     25
     26	atc260x->dev = &client->dev;
     27	atc260x->irq = client->irq;
     28
     29	ret = atc260x_match_device(atc260x, &regmap_cfg);
     30	if (ret)
     31		return ret;
     32
     33	i2c_set_clientdata(client, atc260x);
     34
     35	atc260x->regmap = devm_regmap_init_i2c(client, &regmap_cfg);
     36	if (IS_ERR(atc260x->regmap)) {
     37		ret = PTR_ERR(atc260x->regmap);
     38		dev_err(&client->dev, "failed to init regmap: %d\n", ret);
     39		return ret;
     40	}
     41
     42	return atc260x_device_probe(atc260x);
     43}
     44
     45static const struct of_device_id atc260x_i2c_of_match[] = {
     46	{ .compatible = "actions,atc2603c", .data = (void *)ATC2603C },
     47	{ .compatible = "actions,atc2609a", .data = (void *)ATC2609A },
     48	{ }
     49};
     50MODULE_DEVICE_TABLE(of, atc260x_i2c_of_match);
     51
     52static struct i2c_driver atc260x_i2c_driver = {
     53	.driver = {
     54		.name = "atc260x",
     55		.of_match_table	= of_match_ptr(atc260x_i2c_of_match),
     56	},
     57	.probe = atc260x_i2c_probe,
     58};
     59module_i2c_driver(atc260x_i2c_driver);
     60
     61MODULE_DESCRIPTION("ATC260x PMICs I2C bus interface");
     62MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>");
     63MODULE_AUTHOR("Cristian Ciocaltea <cristian.ciocaltea@gmail.com>");
     64MODULE_LICENSE("GPL");