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1 /*
2  * STMicroelectronics gyroscopes 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_gyro.h"
20 
21 #ifdef CONFIG_OF
22 static const struct of_device_id st_gyro_of_match[] = {
23 	{
24 		.compatible = "st,l3g4200d-gyro",
25 		.data = L3G4200D_GYRO_DEV_NAME,
26 	},
27 	{
28 		.compatible = "st,lsm330d-gyro",
29 		.data = LSM330D_GYRO_DEV_NAME,
30 	},
31 	{
32 		.compatible = "st,lsm330dl-gyro",
33 		.data = LSM330DL_GYRO_DEV_NAME,
34 	},
35 	{
36 		.compatible = "st,lsm330dlc-gyro",
37 		.data = LSM330DLC_GYRO_DEV_NAME,
38 	},
39 	{
40 		.compatible = "st,l3gd20-gyro",
41 		.data = L3GD20_GYRO_DEV_NAME,
42 	},
43 	{
44 		.compatible = "st,l3g4is-gyro",
45 		.data = L3G4IS_GYRO_DEV_NAME,
46 	},
47 	{
48 		.compatible = "st,lsm330-gyro",
49 		.data = LSM330_GYRO_DEV_NAME,
50 	},
51 	{},
52 };
53 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
54 #else
55 #define st_gyro_of_match NULL
56 #endif
57 
st_gyro_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)58 static int st_gyro_i2c_probe(struct i2c_client *client,
59 						const struct i2c_device_id *id)
60 {
61 	struct iio_dev *indio_dev;
62 	struct st_sensor_data *gdata;
63 	int err;
64 
65 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
66 	if (!indio_dev)
67 		return -ENOMEM;
68 
69 	gdata = iio_priv(indio_dev);
70 	st_sensors_of_i2c_probe(client, st_gyro_of_match);
71 
72 	st_sensors_i2c_configure(indio_dev, client, gdata);
73 
74 	err = st_gyro_common_probe(indio_dev);
75 	if (err < 0)
76 		return err;
77 
78 	return 0;
79 }
80 
st_gyro_i2c_remove(struct i2c_client * client)81 static int st_gyro_i2c_remove(struct i2c_client *client)
82 {
83 	st_gyro_common_remove(i2c_get_clientdata(client));
84 
85 	return 0;
86 }
87 
88 static const struct i2c_device_id st_gyro_id_table[] = {
89 	{ L3G4200D_GYRO_DEV_NAME },
90 	{ LSM330D_GYRO_DEV_NAME },
91 	{ LSM330DL_GYRO_DEV_NAME },
92 	{ LSM330DLC_GYRO_DEV_NAME },
93 	{ L3GD20_GYRO_DEV_NAME },
94 	{ L3G4IS_GYRO_DEV_NAME },
95 	{ LSM330_GYRO_DEV_NAME },
96 	{},
97 };
98 MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
99 
100 static struct i2c_driver st_gyro_driver = {
101 	.driver = {
102 		.name = "st-gyro-i2c",
103 		.of_match_table = of_match_ptr(st_gyro_of_match),
104 	},
105 	.probe = st_gyro_i2c_probe,
106 	.remove = st_gyro_i2c_remove,
107 	.id_table = st_gyro_id_table,
108 };
109 module_i2c_driver(st_gyro_driver);
110 
111 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
112 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
113 MODULE_LICENSE("GPL v2");
114