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/device.h> |
11 | #include <linux/err.h> |
12 | #include <linux/gfp_types.h> |
13 | #include <linux/i2c.h> |
14 | #include <linux/module.h> |
15 | #include <linux/mod_devicetable.h> |
16 | #include <linux/regmap.h> |
17 | |
18 | #include <linux/iio/common/st_sensors_i2c.h> |
19 | |
20 | #include "st_lsm9ds0.h" |
21 | |
22 | static const struct of_device_id st_lsm9ds0_of_match[] = { |
23 | { |
24 | .compatible = "st,lsm303d-imu" , |
25 | .data = LSM303D_IMU_DEV_NAME, |
26 | }, |
27 | { |
28 | .compatible = "st,lsm9ds0-imu" , |
29 | .data = LSM9DS0_IMU_DEV_NAME, |
30 | }, |
31 | {} |
32 | }; |
33 | MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match); |
34 | |
35 | static const struct i2c_device_id st_lsm9ds0_id_table[] = { |
36 | { LSM303D_IMU_DEV_NAME }, |
37 | { LSM9DS0_IMU_DEV_NAME }, |
38 | {} |
39 | }; |
40 | MODULE_DEVICE_TABLE(i2c, st_lsm9ds0_id_table); |
41 | |
42 | static const struct acpi_device_id st_lsm9ds0_acpi_match[] = { |
43 | {"ACCL0001" , (kernel_ulong_t)LSM303D_IMU_DEV_NAME}, |
44 | {} |
45 | }; |
46 | MODULE_DEVICE_TABLE(acpi, st_lsm9ds0_acpi_match); |
47 | |
48 | static const struct regmap_config st_lsm9ds0_regmap_config = { |
49 | .reg_bits = 8, |
50 | .val_bits = 8, |
51 | .read_flag_mask = 0x80, |
52 | }; |
53 | |
54 | static int st_lsm9ds0_i2c_probe(struct i2c_client *client) |
55 | { |
56 | const struct regmap_config *config = &st_lsm9ds0_regmap_config; |
57 | struct device *dev = &client->dev; |
58 | struct st_lsm9ds0 *lsm9ds0; |
59 | struct regmap *regmap; |
60 | |
61 | st_sensors_dev_name_probe(dev, name: client->name, len: sizeof(client->name)); |
62 | |
63 | lsm9ds0 = devm_kzalloc(dev, size: sizeof(*lsm9ds0), GFP_KERNEL); |
64 | if (!lsm9ds0) |
65 | return -ENOMEM; |
66 | |
67 | lsm9ds0->dev = dev; |
68 | lsm9ds0->name = client->name; |
69 | lsm9ds0->irq = client->irq; |
70 | |
71 | regmap = devm_regmap_init_i2c(client, config); |
72 | if (IS_ERR(ptr: regmap)) |
73 | return PTR_ERR(ptr: regmap); |
74 | |
75 | i2c_set_clientdata(client, data: lsm9ds0); |
76 | |
77 | return st_lsm9ds0_probe(lsm9ds0, regmap); |
78 | } |
79 | |
80 | static struct i2c_driver st_lsm9ds0_driver = { |
81 | .driver = { |
82 | .name = "st-lsm9ds0-i2c" , |
83 | .of_match_table = st_lsm9ds0_of_match, |
84 | .acpi_match_table = st_lsm9ds0_acpi_match, |
85 | }, |
86 | .probe = st_lsm9ds0_i2c_probe, |
87 | .id_table = st_lsm9ds0_id_table, |
88 | }; |
89 | module_i2c_driver(st_lsm9ds0_driver); |
90 | |
91 | MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>" ); |
92 | MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU I2C driver" ); |
93 | MODULE_LICENSE("GPL v2" ); |
94 | MODULE_IMPORT_NS(IIO_ST_SENSORS); |
95 | |