1 /*
2  * STMicroelectronics uvis25 i2c driver
3  *
4  * Copyright 2017 STMicroelectronics Inc.
5  *
6  * Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
7  *
8  * Licensed under the GPL-2.
9  */
10 
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/acpi.h>
14 #include <linux/i2c.h>
15 #include <linux/slab.h>
16 #include <linux/regmap.h>
17 
18 #include "st_uvis25.h"
19 
20 #define UVIS25_I2C_AUTO_INCREMENT	BIT(7)
21 
22 static const struct regmap_config st_uvis25_i2c_regmap_config = {
23 	.reg_bits = 8,
24 	.val_bits = 8,
25 	.write_flag_mask = UVIS25_I2C_AUTO_INCREMENT,
26 	.read_flag_mask = UVIS25_I2C_AUTO_INCREMENT,
27 };
28 
29 static int st_uvis25_i2c_probe(struct i2c_client *client,
30 			       const struct i2c_device_id *id)
31 {
32 	struct regmap *regmap;
33 
34 	regmap = devm_regmap_init_i2c(client, &st_uvis25_i2c_regmap_config);
35 	if (IS_ERR(regmap)) {
36 		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
37 			(int)PTR_ERR(regmap));
38 		return PTR_ERR(regmap);
39 	}
40 
41 	return st_uvis25_probe(&client->dev, client->irq, regmap);
42 }
43 
44 static const struct of_device_id st_uvis25_i2c_of_match[] = {
45 	{ .compatible = "st,uvis25", },
46 	{},
47 };
48 MODULE_DEVICE_TABLE(of, st_uvis25_i2c_of_match);
49 
50 static const struct i2c_device_id st_uvis25_i2c_id_table[] = {
51 	{ ST_UVIS25_DEV_NAME },
52 	{},
53 };
54 MODULE_DEVICE_TABLE(i2c, st_uvis25_i2c_id_table);
55 
56 static struct i2c_driver st_uvis25_driver = {
57 	.driver = {
58 		.name = "st_uvis25_i2c",
59 		.pm = &st_uvis25_pm_ops,
60 		.of_match_table = of_match_ptr(st_uvis25_i2c_of_match),
61 	},
62 	.probe = st_uvis25_i2c_probe,
63 	.id_table = st_uvis25_i2c_id_table,
64 };
65 module_i2c_driver(st_uvis25_driver);
66 
67 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>");
68 MODULE_DESCRIPTION("STMicroelectronics uvis25 i2c driver");
69 MODULE_LICENSE("GPL v2");
70