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
22static 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};
33MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);
34
35static const struct spi_device_id st_lsm9ds0_id_table[] = {
36 { LSM303D_IMU_DEV_NAME },
37 { LSM9DS0_IMU_DEV_NAME },
38 {}
39};
40MODULE_DEVICE_TABLE(spi, st_lsm9ds0_id_table);
41
42static const struct regmap_config st_lsm9ds0_regmap_config = {
43 .reg_bits = 8,
44 .val_bits = 8,
45 .read_flag_mask = 0xc0,
46};
47
48static 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
73static 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};
81module_spi_driver(st_lsm9ds0_driver);
82
83MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
84MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU SPI driver");
85MODULE_LICENSE("GPL v2");
86MODULE_IMPORT_NS(IIO_ST_SENSORS);
87

source code of linux/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c