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,lsm303dlhc-magn",
25 		.data = LSM303DLHC_MAGN_DEV_NAME,
26 	},
27 	{
28 		.compatible = "st,lsm303dlm-magn",
29 		.data = LSM303DLM_MAGN_DEV_NAME,
30 	},
31 	{
32 		.compatible = "st,lis3mdl-magn",
33 		.data = LIS3MDL_MAGN_DEV_NAME,
34 	},
35 	{},
36 };
37 MODULE_DEVICE_TABLE(of, st_magn_of_match);
38 #else
39 #define st_magn_of_match NULL
40 #endif
41 
42 static int st_magn_i2c_probe(struct i2c_client *client,
43 						const struct i2c_device_id *id)
44 {
45 	struct iio_dev *indio_dev;
46 	struct st_sensor_data *mdata;
47 	int err;
48 
49 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mdata));
50 	if (!indio_dev)
51 		return -ENOMEM;
52 
53 	mdata = iio_priv(indio_dev);
54 	mdata->dev = &client->dev;
55 	st_sensors_of_i2c_probe(client, st_magn_of_match);
56 
57 	st_sensors_i2c_configure(indio_dev, client, mdata);
58 
59 	err = st_magn_common_probe(indio_dev, NULL);
60 	if (err < 0)
61 		return err;
62 
63 	return 0;
64 }
65 
66 static int st_magn_i2c_remove(struct i2c_client *client)
67 {
68 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
69 	st_magn_common_remove(indio_dev);
70 
71 	return 0;
72 }
73 
74 static const struct i2c_device_id st_magn_id_table[] = {
75 	{ LSM303DLHC_MAGN_DEV_NAME },
76 	{ LSM303DLM_MAGN_DEV_NAME },
77 	{ LIS3MDL_MAGN_DEV_NAME },
78 	{},
79 };
80 MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
81 
82 static struct i2c_driver st_magn_driver = {
83 	.driver = {
84 		.owner = THIS_MODULE,
85 		.name = "st-magn-i2c",
86 		.of_match_table = of_match_ptr(st_magn_of_match),
87 	},
88 	.probe = st_magn_i2c_probe,
89 	.remove = st_magn_i2c_remove,
90 	.id_table = st_magn_id_table,
91 };
92 module_i2c_driver(st_magn_driver);
93 
94 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
95 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
96 MODULE_LICENSE("GPL v2");
97