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");
105