1 /*
2 * STMicroelectronics magnetometers driver
3 *
4 * Copyright 2012-2013 STMicroelectronics Inc.
5 *
6 * Denis Ciocca <denis.ciocca@st.com>
7 *
8 * Licensed under the GPL-2.
9 */
10
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/slab.h>
14 #include <linux/i2c.h>
15 #include <linux/iio/iio.h>
16
17 #include <linux/iio/common/st_sensors.h>
18 #include <linux/iio/common/st_sensors_i2c.h>
19 #include "st_magn.h"
20
21 #ifdef CONFIG_OF
22 static const struct of_device_id st_magn_of_match[] = {
23 {
24 .compatible = "st,lsm303dlh-magn",
25 .data = LSM303DLH_MAGN_DEV_NAME,
26 },
27 {
28 .compatible = "st,lsm303dlhc-magn",
29 .data = LSM303DLHC_MAGN_DEV_NAME,
30 },
31 {
32 .compatible = "st,lsm303dlm-magn",
33 .data = LSM303DLM_MAGN_DEV_NAME,
34 },
35 {
36 .compatible = "st,lis3mdl-magn",
37 .data = LIS3MDL_MAGN_DEV_NAME,
38 },
39 {
40 .compatible = "st,lsm303agr-magn",
41 .data = LSM303AGR_MAGN_DEV_NAME,
42 },
43 {
44 .compatible = "st,lis2mdl",
45 .data = LIS2MDL_MAGN_DEV_NAME,
46 },
47 {},
48 };
49 MODULE_DEVICE_TABLE(of, st_magn_of_match);
50 #else
51 #define st_magn_of_match NULL
52 #endif
53
st_magn_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)54 static int st_magn_i2c_probe(struct i2c_client *client,
55 const struct i2c_device_id *id)
56 {
57 struct iio_dev *indio_dev;
58 struct st_sensor_data *mdata;
59 int err;
60
61 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
62 if (!indio_dev)
63 return -ENOMEM;
64
65 mdata = iio_priv(indio_dev);
66 st_sensors_of_name_probe(&client->dev, st_magn_of_match,
67 client->name, sizeof(client->name));
68
69 st_sensors_i2c_configure(indio_dev, client, mdata);
70
71 err = st_magn_common_probe(indio_dev);
72 if (err < 0)
73 return err;
74
75 return 0;
76 }
77
st_magn_i2c_remove(struct i2c_client * client)78 static int st_magn_i2c_remove(struct i2c_client *client)
79 {
80 struct iio_dev *indio_dev = i2c_get_clientdata(client);
81 st_magn_common_remove(indio_dev);
82
83 return 0;
84 }
85
86 static const struct i2c_device_id st_magn_id_table[] = {
87 { LSM303DLH_MAGN_DEV_NAME },
88 { LSM303DLHC_MAGN_DEV_NAME },
89 { LSM303DLM_MAGN_DEV_NAME },
90 { LIS3MDL_MAGN_DEV_NAME },
91 { LSM303AGR_MAGN_DEV_NAME },
92 { LIS2MDL_MAGN_DEV_NAME },
93 {},
94 };
95 MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
96
97 static struct i2c_driver st_magn_driver = {
98 .driver = {
99 .name = "st-magn-i2c",
100 .of_match_table = of_match_ptr(st_magn_of_match),
101 },
102 .probe = st_magn_i2c_probe,
103 .remove = st_magn_i2c_remove,
104 .id_table = st_magn_id_table,
105 };
106 module_i2c_driver(st_magn_driver);
107
108 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
109 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
110 MODULE_LICENSE("GPL v2");
111
