1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * STMicroelectronics hts221 i2c driver
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2016 STMicroelectronics Inc.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Lorenzo Bianconi <lorenzo.bianconi@st.com>
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/kernel.h>
11*4882a593Smuzhiyun #include <linux/module.h>
12*4882a593Smuzhiyun #include <linux/acpi.h>
13*4882a593Smuzhiyun #include <linux/i2c.h>
14*4882a593Smuzhiyun #include <linux/slab.h>
15*4882a593Smuzhiyun #include <linux/regmap.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #include "hts221.h"
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #define HTS221_I2C_AUTO_INCREMENT BIT(7)
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun static const struct regmap_config hts221_i2c_regmap_config = {
22*4882a593Smuzhiyun .reg_bits = 8,
23*4882a593Smuzhiyun .val_bits = 8,
24*4882a593Smuzhiyun .write_flag_mask = HTS221_I2C_AUTO_INCREMENT,
25*4882a593Smuzhiyun .read_flag_mask = HTS221_I2C_AUTO_INCREMENT,
26*4882a593Smuzhiyun };
27*4882a593Smuzhiyun
hts221_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)28*4882a593Smuzhiyun static int hts221_i2c_probe(struct i2c_client *client,
29*4882a593Smuzhiyun const struct i2c_device_id *id)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun struct regmap *regmap;
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun regmap = devm_regmap_init_i2c(client, &hts221_i2c_regmap_config);
34*4882a593Smuzhiyun if (IS_ERR(regmap)) {
35*4882a593Smuzhiyun dev_err(&client->dev, "Failed to register i2c regmap %ld\n",
36*4882a593Smuzhiyun PTR_ERR(regmap));
37*4882a593Smuzhiyun return PTR_ERR(regmap);
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun return hts221_probe(&client->dev, client->irq,
41*4882a593Smuzhiyun client->name, regmap);
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun static const struct acpi_device_id hts221_acpi_match[] = {
45*4882a593Smuzhiyun {"SMO9100", 0},
46*4882a593Smuzhiyun { },
47*4882a593Smuzhiyun };
48*4882a593Smuzhiyun MODULE_DEVICE_TABLE(acpi, hts221_acpi_match);
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun static const struct of_device_id hts221_i2c_of_match[] = {
51*4882a593Smuzhiyun { .compatible = "st,hts221", },
52*4882a593Smuzhiyun {},
53*4882a593Smuzhiyun };
54*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, hts221_i2c_of_match);
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun static const struct i2c_device_id hts221_i2c_id_table[] = {
57*4882a593Smuzhiyun { HTS221_DEV_NAME },
58*4882a593Smuzhiyun {},
59*4882a593Smuzhiyun };
60*4882a593Smuzhiyun MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun static struct i2c_driver hts221_driver = {
63*4882a593Smuzhiyun .driver = {
64*4882a593Smuzhiyun .name = "hts221_i2c",
65*4882a593Smuzhiyun .pm = &hts221_pm_ops,
66*4882a593Smuzhiyun .of_match_table = hts221_i2c_of_match,
67*4882a593Smuzhiyun .acpi_match_table = ACPI_PTR(hts221_acpi_match),
68*4882a593Smuzhiyun },
69*4882a593Smuzhiyun .probe = hts221_i2c_probe,
70*4882a593Smuzhiyun .id_table = hts221_i2c_id_table,
71*4882a593Smuzhiyun };
72*4882a593Smuzhiyun module_i2c_driver(hts221_driver);
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
75*4882a593Smuzhiyun MODULE_DESCRIPTION("STMicroelectronics hts221 i2c driver");
76*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
77