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/module.h> |
14 | #include <linux/mod_devicetable.h> |
15 | #include <linux/regmap.h> |
16 | #include <linux/spi/spi.h> |
17 | |
18 | #include <linux/iio/common/st_sensors_spi.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 spi_device_id st_lsm9ds0_id_table[] = { |
36 | { LSM303D_IMU_DEV_NAME }, |
37 | { LSM9DS0_IMU_DEV_NAME }, |
38 | {} |
39 | }; |
40 | MODULE_DEVICE_TABLE(spi, st_lsm9ds0_id_table); |
41 | |
42 | static const struct regmap_config st_lsm9ds0_regmap_config = { |
43 | .reg_bits = 8, |
44 | .val_bits = 8, |
45 | .read_flag_mask = 0xc0, |
46 | }; |
47 | |
48 | static int st_lsm9ds0_spi_probe(struct spi_device *spi) |
49 | { |
50 | struct device *dev = &spi->dev; |
51 | struct st_lsm9ds0 *lsm9ds0; |
52 | struct regmap *regmap; |
53 | |
54 | st_sensors_dev_name_probe(dev, name: spi->modalias, len: sizeof(spi->modalias)); |
55 | |
56 | lsm9ds0 = devm_kzalloc(dev, size: sizeof(*lsm9ds0), GFP_KERNEL); |
57 | if (!lsm9ds0) |
58 | return -ENOMEM; |
59 | |
60 | lsm9ds0->dev = dev; |
61 | lsm9ds0->name = spi->modalias; |
62 | lsm9ds0->irq = spi->irq; |
63 | |
64 | regmap = devm_regmap_init_spi(spi, &st_lsm9ds0_regmap_config); |
65 | if (IS_ERR(ptr: regmap)) |
66 | return PTR_ERR(ptr: regmap); |
67 | |
68 | spi_set_drvdata(spi, data: lsm9ds0); |
69 | |
70 | return st_lsm9ds0_probe(lsm9ds0, regmap); |
71 | } |
72 | |
73 | static struct spi_driver st_lsm9ds0_driver = { |
74 | .driver = { |
75 | .name = "st-lsm9ds0-spi" , |
76 | .of_match_table = st_lsm9ds0_of_match, |
77 | }, |
78 | .probe = st_lsm9ds0_spi_probe, |
79 | .id_table = st_lsm9ds0_id_table, |
80 | }; |
81 | module_spi_driver(st_lsm9ds0_driver); |
82 | |
83 | MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>" ); |
84 | MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU SPI driver" ); |
85 | MODULE_LICENSE("GPL v2" ); |
86 | MODULE_IMPORT_NS(IIO_ST_SENSORS); |
87 | |