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,lsm9ds0-imu",
23 .data = LSM9DS0_IMU_DEV_NAME,
24 },
25 {}
26 };
27 MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);
28
29 static const struct spi_device_id st_lsm9ds0_id_table[] = {
30 { LSM9DS0_IMU_DEV_NAME },
31 {}
32 };
33 MODULE_DEVICE_TABLE(spi, st_lsm9ds0_id_table);
34
35 static const struct regmap_config st_lsm9ds0_regmap_config = {
36 .reg_bits = 8,
37 .val_bits = 8,
38 .read_flag_mask = 0xc0,
39 };
40
st_lsm9ds0_spi_probe(struct spi_device * spi)41 static int st_lsm9ds0_spi_probe(struct spi_device *spi)
42 {
43 struct device *dev = &spi->dev;
44 struct st_lsm9ds0 *lsm9ds0;
45 struct regmap *regmap;
46
47 st_sensors_dev_name_probe(dev, spi->modalias, sizeof(spi->modalias));
48
49 lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);
50 if (!lsm9ds0)
51 return -ENOMEM;
52
53 lsm9ds0->dev = dev;
54 lsm9ds0->name = spi->modalias;
55 lsm9ds0->irq = spi->irq;
56
57 regmap = devm_regmap_init_spi(spi, &st_lsm9ds0_regmap_config);
58 if (IS_ERR(regmap))
59 return PTR_ERR(regmap);
60
61 spi_set_drvdata(spi, lsm9ds0);
62
63 return st_lsm9ds0_probe(lsm9ds0, regmap);
64 }
65
66 static struct spi_driver st_lsm9ds0_driver = {
67 .driver = {
68 .name = "st-lsm9ds0-spi",
69 .of_match_table = st_lsm9ds0_of_match,
70 },
71 .probe = st_lsm9ds0_spi_probe,
72 .id_table = st_lsm9ds0_id_table,
73 };
74 module_spi_driver(st_lsm9ds0_driver);
75
76 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
77 MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU SPI driver");
78 MODULE_LICENSE("GPL v2");
79 MODULE_IMPORT_NS(IIO_ST_SENSORS);
80