1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * STMicroelectronics uvis25 i2c driver
 4 *
 5 * Copyright 2017 STMicroelectronics Inc.
 6 *
 7 * Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
 8 */
 9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/acpi.h>
13#include <linux/i2c.h>
14#include <linux/slab.h>
15#include <linux/regmap.h>
16
17#include "st_uvis25.h"
18
19#define UVIS25_I2C_AUTO_INCREMENT	BIT(7)
20
21static const struct regmap_config st_uvis25_i2c_regmap_config = {
22	.reg_bits = 8,
23	.val_bits = 8,
24	.write_flag_mask = UVIS25_I2C_AUTO_INCREMENT,
25	.read_flag_mask = UVIS25_I2C_AUTO_INCREMENT,
26};
27
28static int st_uvis25_i2c_probe(struct i2c_client *client,
29			       const struct i2c_device_id *id)
30{
31	struct regmap *regmap;
32
33	regmap = devm_regmap_init_i2c(client, &st_uvis25_i2c_regmap_config);
34	if (IS_ERR(regmap)) {
35		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
36			(int)PTR_ERR(regmap));
37		return PTR_ERR(regmap);
38	}
39
40	return st_uvis25_probe(&client->dev, client->irq, regmap);
41}
42
43static const struct of_device_id st_uvis25_i2c_of_match[] = {
44	{ .compatible = "st,uvis25", },
45	{},
46};
47MODULE_DEVICE_TABLE(of, st_uvis25_i2c_of_match);
48
49static const struct i2c_device_id st_uvis25_i2c_id_table[] = {
50	{ ST_UVIS25_DEV_NAME },
51	{},
52};
53MODULE_DEVICE_TABLE(i2c, st_uvis25_i2c_id_table);
54
55static struct i2c_driver st_uvis25_driver = {
56	.driver = {
57		.name = "st_uvis25_i2c",
58		.pm = &st_uvis25_pm_ops,
59		.of_match_table = of_match_ptr(st_uvis25_i2c_of_match),
60	},
61	.probe = st_uvis25_i2c_probe,
62	.id_table = st_uvis25_i2c_id_table,
63};
64module_i2c_driver(st_uvis25_driver);
65
66MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>");
67MODULE_DESCRIPTION("STMicroelectronics uvis25 i2c driver");
68MODULE_LICENSE("GPL v2");