Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[firefly-linux-kernel-4.4.55.git] / drivers / iio / magnetometer / st_magn_i2c.c
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 };
45 MODULE_DEVICE_TABLE(of, st_magn_of_match);
46 #else
47 #define st_magn_of_match NULL
48 #endif
49
50 static int st_magn_i2c_probe(struct i2c_client *client,
51                                                 const struct i2c_device_id *id)
52 {
53         struct iio_dev *indio_dev;
54         struct st_sensor_data *mdata;
55         int err;
56
57         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
58         if (!indio_dev)
59                 return -ENOMEM;
60
61         mdata = iio_priv(indio_dev);
62         st_sensors_of_i2c_probe(client, st_magn_of_match);
63
64         st_sensors_i2c_configure(indio_dev, client, mdata);
65
66         err = st_magn_common_probe(indio_dev);
67         if (err < 0)
68                 return err;
69
70         return 0;
71 }
72
73 static int st_magn_i2c_remove(struct i2c_client *client)
74 {
75         struct iio_dev *indio_dev = i2c_get_clientdata(client);
76         st_magn_common_remove(indio_dev);
77
78         return 0;
79 }
80
81 static const struct i2c_device_id st_magn_id_table[] = {
82         { LSM303DLH_MAGN_DEV_NAME },
83         { LSM303DLHC_MAGN_DEV_NAME },
84         { LSM303DLM_MAGN_DEV_NAME },
85         { LIS3MDL_MAGN_DEV_NAME },
86         { LSM303AGR_MAGN_DEV_NAME },
87         {},
88 };
89 MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
90
91 static struct i2c_driver st_magn_driver = {
92         .driver = {
93                 .name = "st-magn-i2c",
94                 .of_match_table = of_match_ptr(st_magn_of_match),
95         },
96         .probe = st_magn_i2c_probe,
97         .remove = st_magn_i2c_remove,
98         .id_table = st_magn_id_table,
99 };
100 module_i2c_driver(st_magn_driver);
101
102 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
103 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
104 MODULE_LICENSE("GPL v2");