tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * STMicroelectronics hts221 i2c driver
3 *
4 * Copyright 2016 STMicroelectronics Inc.
5 *
6 * Lorenzo Bianconi <lorenzo.bianconi@st.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 "hts221.h"
19
20#define HTS221_I2C_AUTO_INCREMENT BIT(7)
21
22static const struct regmap_config hts221_i2c_regmap_config = {
23 .reg_bits = 8,
24 .val_bits = 8,
25 .write_flag_mask = HTS221_I2C_AUTO_INCREMENT,
26 .read_flag_mask = HTS221_I2C_AUTO_INCREMENT,
27};
28
29static int hts221_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, &hts221_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 hts221_probe(&client->dev, client->irq,
42 client->name, regmap);
43}
44
45static const struct acpi_device_id hts221_acpi_match[] = {
46 {"SMO9100", 0},
47 { },
48};
49MODULE_DEVICE_TABLE(acpi, hts221_acpi_match);
50
51static const struct of_device_id hts221_i2c_of_match[] = {
52 { .compatible = "st,hts221", },
53 {},
54};
55MODULE_DEVICE_TABLE(of, hts221_i2c_of_match);
56
57static const struct i2c_device_id hts221_i2c_id_table[] = {
58 { HTS221_DEV_NAME },
59 {},
60};
61MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table);
62
63static struct i2c_driver hts221_driver = {
64 .driver = {
65 .name = "hts221_i2c",
66 .pm = &hts221_pm_ops,
67 .of_match_table = of_match_ptr(hts221_i2c_of_match),
68 .acpi_match_table = ACPI_PTR(hts221_acpi_match),
69 },
70 .probe = hts221_i2c_probe,
71 .id_table = hts221_i2c_id_table,
72};
73module_i2c_driver(hts221_driver);
74
75MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
76MODULE_DESCRIPTION("STMicroelectronics hts221 i2c driver");
77MODULE_LICENSE("GPL v2");