1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * STMicroelectronics hts221 i2c driver
4 *
5 * Copyright 2016 STMicroelectronics Inc.
6 *
7 * Lorenzo Bianconi <lorenzo.bianconi@st.com>
8 */
9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/mod_devicetable.h>
13#include <linux/i2c.h>
14#include <linux/slab.h>
15#include <linux/regmap.h>
16
17#include "hts221.h"
18
19#define HTS221_I2C_AUTO_INCREMENT	BIT(7)
20
21static const struct regmap_config hts221_i2c_regmap_config = {
22	.reg_bits = 8,
23	.val_bits = 8,
24	.write_flag_mask = HTS221_I2C_AUTO_INCREMENT,
25	.read_flag_mask = HTS221_I2C_AUTO_INCREMENT,
26};
27
28static int hts221_i2c_probe(struct i2c_client *client)
29{
30	struct regmap *regmap;
31
32	regmap = devm_regmap_init_i2c(client, &hts221_i2c_regmap_config);
33	if (IS_ERR(regmap)) {
34		dev_err(&client->dev, "Failed to register i2c regmap %ld\n",
35			PTR_ERR(regmap));
36		return PTR_ERR(regmap);
37	}
38
39	return hts221_probe(&client->dev, client->irq,
40			    client->name, regmap);
41}
42
43static const struct acpi_device_id hts221_acpi_match[] = {
44	{"SMO9100", 0},
45	{ },
46};
47MODULE_DEVICE_TABLE(acpi, hts221_acpi_match);
48
49static const struct of_device_id hts221_i2c_of_match[] = {
50	{ .compatible = "st,hts221", },
51	{},
52};
53MODULE_DEVICE_TABLE(of, hts221_i2c_of_match);
54
55static const struct i2c_device_id hts221_i2c_id_table[] = {
56	{ HTS221_DEV_NAME },
57	{},
58};
59MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table);
60
61static struct i2c_driver hts221_driver = {
62	.driver = {
63		.name = "hts221_i2c",
64		.pm = pm_sleep_ptr(&hts221_pm_ops),
65		.of_match_table = hts221_i2c_of_match,
66		.acpi_match_table = hts221_acpi_match,
67	},
68	.probe = hts221_i2c_probe,
69	.id_table = hts221_i2c_id_table,
70};
71module_i2c_driver(hts221_driver);
72
73MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
74MODULE_DESCRIPTION("STMicroelectronics hts221 i2c driver");
75MODULE_LICENSE("GPL v2");
76MODULE_IMPORT_NS(IIO_HTS221);
77