1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * STMicroelectronics magnetometers driver
4 *
5 * Copyright 2012-2013 STMicroelectronics Inc.
6 *
7 * Denis Ciocca <denis.ciocca@st.com>
8 */
9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/mod_devicetable.h>
13#include <linux/i2c.h>
14#include <linux/iio/iio.h>
15
16#include <linux/iio/common/st_sensors.h>
17#include <linux/iio/common/st_sensors_i2c.h>
18#include "st_magn.h"
19
20static const struct of_device_id st_magn_of_match[] = {
21 {
22 .compatible = "st,lsm303dlh-magn",
23 .data = LSM303DLH_MAGN_DEV_NAME,
24 },
25 {
26 .compatible = "st,lsm303dlhc-magn",
27 .data = LSM303DLHC_MAGN_DEV_NAME,
28 },
29 {
30 .compatible = "st,lsm303dlm-magn",
31 .data = LSM303DLM_MAGN_DEV_NAME,
32 },
33 {
34 .compatible = "st,lis3mdl-magn",
35 .data = LIS3MDL_MAGN_DEV_NAME,
36 },
37 {
38 .compatible = "st,lsm303agr-magn",
39 .data = LSM303AGR_MAGN_DEV_NAME,
40 },
41 {
42 .compatible = "st,lis2mdl",
43 .data = LIS2MDL_MAGN_DEV_NAME,
44 },
45 {
46 .compatible = "st,lsm9ds1-magn",
47 .data = LSM9DS1_MAGN_DEV_NAME,
48 },
49 {
50 .compatible = "st,iis2mdc",
51 .data = IIS2MDC_MAGN_DEV_NAME,
52 },
53 {
54 .compatible = "st,lsm303c-magn",
55 .data = LSM303C_MAGN_DEV_NAME,
56 },
57 {},
58};
59MODULE_DEVICE_TABLE(of, st_magn_of_match);
60
61static int st_magn_i2c_probe(struct i2c_client *client)
62{
63 const struct st_sensor_settings *settings;
64 struct st_sensor_data *mdata;
65 struct iio_dev *indio_dev;
66 int err;
67
68 st_sensors_dev_name_probe(dev: &client->dev, name: client->name, len: sizeof(client->name));
69
70 settings = st_magn_get_settings(name: client->name);
71 if (!settings) {
72 dev_err(&client->dev, "device name %s not recognized.\n",
73 client->name);
74 return -ENODEV;
75 }
76
77 indio_dev = devm_iio_device_alloc(parent: &client->dev, sizeof_priv: sizeof(*mdata));
78 if (!indio_dev)
79 return -ENOMEM;
80
81 mdata = iio_priv(indio_dev);
82 mdata->sensor_settings = (struct st_sensor_settings *)settings;
83
84 err = st_sensors_i2c_configure(indio_dev, client);
85 if (err < 0)
86 return err;
87
88 err = st_sensors_power_enable(indio_dev);
89 if (err)
90 return err;
91
92 return st_magn_common_probe(indio_dev);
93}
94
95static const struct i2c_device_id st_magn_id_table[] = {
96 { LSM303DLH_MAGN_DEV_NAME },
97 { LSM303DLHC_MAGN_DEV_NAME },
98 { LSM303DLM_MAGN_DEV_NAME },
99 { LIS3MDL_MAGN_DEV_NAME },
100 { LSM303AGR_MAGN_DEV_NAME },
101 { LIS2MDL_MAGN_DEV_NAME },
102 { LSM9DS1_MAGN_DEV_NAME },
103 { IIS2MDC_MAGN_DEV_NAME },
104 { LSM303C_MAGN_DEV_NAME },
105 {},
106};
107MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
108
109static struct i2c_driver st_magn_driver = {
110 .driver = {
111 .name = "st-magn-i2c",
112 .of_match_table = st_magn_of_match,
113 },
114 .probe = st_magn_i2c_probe,
115 .id_table = st_magn_id_table,
116};
117module_i2c_driver(st_magn_driver);
118
119MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
120MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
121MODULE_LICENSE("GPL v2");
122MODULE_IMPORT_NS(IIO_ST_SENSORS);
123

source code of linux/drivers/iio/magnetometer/st_magn_i2c.c