1 // SPDX-License-Identifier: GPL-2.0-only
3 * STMicroelectronics magnetometers driver
5 * Copyright 2012-2013 STMicroelectronics Inc.
7 * Denis Ciocca <denis.ciocca@st.com>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/slab.h>
13 #include <linux/spi/spi.h>
14 #include <linux/iio/iio.h>
16 #include <linux/iio/common/st_sensors.h>
17 #include <linux/iio/common/st_sensors_spi.h>
21 * For new single-chip sensors use <device_name> as compatible string.
22 * For old single-chip devices keep <device_name>-magn to maintain
24 * For multi-chip devices, use <device_name>-magn to distinguish which
25 * capability is being used
27 static const struct of_device_id st_magn_of_match[] = {
29 .compatible = "st,lis3mdl-magn",
30 .data = LIS3MDL_MAGN_DEV_NAME,
33 .compatible = "st,lsm303agr-magn",
34 .data = LSM303AGR_MAGN_DEV_NAME,
37 .compatible = "st,lis2mdl",
38 .data = LIS2MDL_MAGN_DEV_NAME,
41 .compatible = "st,lsm9ds1-magn",
42 .data = LSM9DS1_MAGN_DEV_NAME,
46 MODULE_DEVICE_TABLE(of, st_magn_of_match);
48 static int st_magn_spi_probe(struct spi_device *spi)
50 const struct st_sensor_settings *settings;
51 struct st_sensor_data *mdata;
52 struct iio_dev *indio_dev;
55 st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
57 settings = st_magn_get_settings(spi->modalias);
59 dev_err(&spi->dev, "device name %s not recognized.\n",
64 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*mdata));
68 mdata = iio_priv(indio_dev);
69 mdata->sensor_settings = (struct st_sensor_settings *)settings;
71 err = st_sensors_spi_configure(indio_dev, spi);
75 err = st_sensors_power_enable(indio_dev);
79 err = st_magn_common_probe(indio_dev);
81 goto st_magn_power_off;
86 st_sensors_power_disable(indio_dev);
91 static int st_magn_spi_remove(struct spi_device *spi)
93 struct iio_dev *indio_dev = spi_get_drvdata(spi);
95 st_magn_common_remove(indio_dev);
97 st_sensors_power_disable(indio_dev);
102 static const struct spi_device_id st_magn_id_table[] = {
103 { LIS3MDL_MAGN_DEV_NAME },
104 { LSM303AGR_MAGN_DEV_NAME },
105 { LIS2MDL_MAGN_DEV_NAME },
106 { LSM9DS1_MAGN_DEV_NAME },
109 MODULE_DEVICE_TABLE(spi, st_magn_id_table);
111 static struct spi_driver st_magn_driver = {
113 .name = "st-magn-spi",
114 .of_match_table = st_magn_of_match,
116 .probe = st_magn_spi_probe,
117 .remove = st_magn_spi_remove,
118 .id_table = st_magn_id_table,
120 module_spi_driver(st_magn_driver);
122 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
123 MODULE_DESCRIPTION("STMicroelectronics magnetometers spi driver");
124 MODULE_LICENSE("GPL v2");