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 
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 
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