1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * STMicroelectronics LSM9DS0 IMU driver
4 *
5 * Copyright (C) 2021, Intel Corporation
6 *
7 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
8 */
9
10 #include <linux/i2c.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/mod_devicetable.h>
14 #include <linux/regmap.h>
15
16 #include <linux/iio/common/st_sensors_i2c.h>
17
18 #include "st_lsm9ds0.h"
19
20 static const struct of_device_id st_lsm9ds0_of_match[] = {
21 {
22 .compatible = "st,lsm9ds0-imu",
23 .data = LSM9DS0_IMU_DEV_NAME,
24 },
25 {}
26 };
27 MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);
28
29 static const struct i2c_device_id st_lsm9ds0_id_table[] = {
30 { LSM9DS0_IMU_DEV_NAME },
31 {}
32 };
33 MODULE_DEVICE_TABLE(i2c, st_lsm9ds0_id_table);
34
35 static const struct regmap_config st_lsm9ds0_regmap_config = {
36 .reg_bits = 8,
37 .val_bits = 8,
38 .read_flag_mask = 0x80,
39 };
40
st_lsm9ds0_i2c_probe(struct i2c_client * client)41 static int st_lsm9ds0_i2c_probe(struct i2c_client *client)
42 {
43 const struct regmap_config *config = &st_lsm9ds0_regmap_config;
44 struct device *dev = &client->dev;
45 struct st_lsm9ds0 *lsm9ds0;
46 struct regmap *regmap;
47
48 st_sensors_dev_name_probe(dev, client->name, sizeof(client->name));
49
50 lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);
51 if (!lsm9ds0)
52 return -ENOMEM;
53
54 lsm9ds0->dev = dev;
55 lsm9ds0->name = client->name;
56 lsm9ds0->irq = client->irq;
57
58 regmap = devm_regmap_init_i2c(client, config);
59 if (IS_ERR(regmap))
60 return PTR_ERR(regmap);
61
62 i2c_set_clientdata(client, lsm9ds0);
63
64 return st_lsm9ds0_probe(lsm9ds0, regmap);
65 }
66
67 static struct i2c_driver st_lsm9ds0_driver = {
68 .driver = {
69 .name = "st-lsm9ds0-i2c",
70 .of_match_table = st_lsm9ds0_of_match,
71 },
72 .probe_new = st_lsm9ds0_i2c_probe,
73 .id_table = st_lsm9ds0_id_table,
74 };
75 module_i2c_driver(st_lsm9ds0_driver);
76
77 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
78 MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU I2C driver");
79 MODULE_LICENSE("GPL v2");
80 MODULE_IMPORT_NS(IIO_ST_SENSORS);
81