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