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,lsm303d-imu",
23 .data = LSM303D_IMU_DEV_NAME,
24 },
25 {
26 .compatible = "st,lsm9ds0-imu",
27 .data = LSM9DS0_IMU_DEV_NAME,
28 },
29 {}
30 };
31 MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);
32
33 static const struct i2c_device_id st_lsm9ds0_id_table[] = {
34 { LSM303D_IMU_DEV_NAME },
35 { LSM9DS0_IMU_DEV_NAME },
36 {}
37 };
38 MODULE_DEVICE_TABLE(i2c, st_lsm9ds0_id_table);
39
40 static const struct acpi_device_id st_lsm9ds0_acpi_match[] = {
41 {"ACCL0001", (kernel_ulong_t)LSM303D_IMU_DEV_NAME},
42 { },
43 };
44 MODULE_DEVICE_TABLE(acpi, st_lsm9ds0_acpi_match);
45
46 static const struct regmap_config st_lsm9ds0_regmap_config = {
47 .reg_bits = 8,
48 .val_bits = 8,
49 .read_flag_mask = 0x80,
50 };
51
st_lsm9ds0_i2c_probe(struct i2c_client * client)52 static int st_lsm9ds0_i2c_probe(struct i2c_client *client)
53 {
54 const struct regmap_config *config = &st_lsm9ds0_regmap_config;
55 struct device *dev = &client->dev;
56 struct st_lsm9ds0 *lsm9ds0;
57 struct regmap *regmap;
58
59 st_sensors_dev_name_probe(dev, client->name, sizeof(client->name));
60
61 lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);
62 if (!lsm9ds0)
63 return -ENOMEM;
64
65 lsm9ds0->dev = dev;
66 lsm9ds0->name = client->name;
67 lsm9ds0->irq = client->irq;
68
69 regmap = devm_regmap_init_i2c(client, config);
70 if (IS_ERR(regmap))
71 return PTR_ERR(regmap);
72
73 i2c_set_clientdata(client, lsm9ds0);
74
75 return st_lsm9ds0_probe(lsm9ds0, regmap);
76 }
77
78 static struct i2c_driver st_lsm9ds0_driver = {
79 .driver = {
80 .name = "st-lsm9ds0-i2c",
81 .of_match_table = st_lsm9ds0_of_match,
82 .acpi_match_table = st_lsm9ds0_acpi_match,
83 },
84 .probe = st_lsm9ds0_i2c_probe,
85 .id_table = st_lsm9ds0_id_table,
86 };
87 module_i2c_driver(st_lsm9ds0_driver);
88
89 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
90 MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU I2C driver");
91 MODULE_LICENSE("GPL v2");
92 MODULE_IMPORT_NS(IIO_ST_SENSORS);
93