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
20 static 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 };
55 MODULE_DEVICE_TABLE(of, st_magn_of_match);
56
st_magn_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)57 static int st_magn_i2c_probe(struct i2c_client *client,
58 const struct i2c_device_id *id)
59 {
60 const struct st_sensor_settings *settings;
61 struct st_sensor_data *mdata;
62 struct iio_dev *indio_dev;
63 int err;
64
65 st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
66
67 settings = st_magn_get_settings(client->name);
68 if (!settings) {
69 dev_err(&client->dev, "device name %s not recognized.\n",
70 client->name);
71 return -ENODEV;
72 }
73
74 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
75 if (!indio_dev)
76 return -ENOMEM;
77
78 mdata = iio_priv(indio_dev);
79 mdata->sensor_settings = (struct st_sensor_settings *)settings;
80
81 err = st_sensors_i2c_configure(indio_dev, client);
82 if (err < 0)
83 return err;
84
85 err = st_sensors_power_enable(indio_dev);
86 if (err)
87 return err;
88
89 return st_magn_common_probe(indio_dev);
90 }
91
92 static const struct i2c_device_id st_magn_id_table[] = {
93 { LSM303DLH_MAGN_DEV_NAME },
94 { LSM303DLHC_MAGN_DEV_NAME },
95 { LSM303DLM_MAGN_DEV_NAME },
96 { LIS3MDL_MAGN_DEV_NAME },
97 { LSM303AGR_MAGN_DEV_NAME },
98 { LIS2MDL_MAGN_DEV_NAME },
99 { LSM9DS1_MAGN_DEV_NAME },
100 { IIS2MDC_MAGN_DEV_NAME },
101 {},
102 };
103 MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
104
105 static struct i2c_driver st_magn_driver = {
106 .driver = {
107 .name = "st-magn-i2c",
108 .of_match_table = st_magn_of_match,
109 },
110 .probe = st_magn_i2c_probe,
111 .id_table = st_magn_id_table,
112 };
113 module_i2c_driver(st_magn_driver);
114
115 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
116 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
117 MODULE_LICENSE("GPL v2");
118 MODULE_IMPORT_NS(IIO_ST_SENSORS);
119
