1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * STMicroelectronics gyroscopes driver
4 *
5 * Copyright 2012-2013 STMicroelectronics Inc.
6 *
7 * Denis Ciocca <denis.ciocca@st.com>
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/slab.h>
13 #include <linux/i2c.h>
14 #include <linux/iio/iio.h>
15
16 #include <linux/iio/common/st_sensors.h>
17 #include <linux/iio/common/st_sensors_i2c.h>
18 #include "st_gyro.h"
19
20 static const struct of_device_id st_gyro_of_match[] = {
21 {
22 .compatible = "st,l3g4200d-gyro",
23 .data = L3G4200D_GYRO_DEV_NAME,
24 },
25 {
26 .compatible = "st,lsm330d-gyro",
27 .data = LSM330D_GYRO_DEV_NAME,
28 },
29 {
30 .compatible = "st,lsm330dl-gyro",
31 .data = LSM330DL_GYRO_DEV_NAME,
32 },
33 {
34 .compatible = "st,lsm330dlc-gyro",
35 .data = LSM330DLC_GYRO_DEV_NAME,
36 },
37 {
38 .compatible = "st,l3gd20-gyro",
39 .data = L3GD20_GYRO_DEV_NAME,
40 },
41 {
42 .compatible = "st,l3gd20h-gyro",
43 .data = L3GD20H_GYRO_DEV_NAME,
44 },
45 {
46 .compatible = "st,l3g4is-gyro",
47 .data = L3G4IS_GYRO_DEV_NAME,
48 },
49 {
50 .compatible = "st,lsm330-gyro",
51 .data = LSM330_GYRO_DEV_NAME,
52 },
53 {
54 .compatible = "st,lsm9ds0-gyro",
55 .data = LSM9DS0_GYRO_DEV_NAME,
56 },
57 {},
58 };
59 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
60
st_gyro_i2c_probe(struct i2c_client * client,const struct i2c_device_id * id)61 static int st_gyro_i2c_probe(struct i2c_client *client,
62 const struct i2c_device_id *id)
63 {
64 const struct st_sensor_settings *settings;
65 struct st_sensor_data *gdata;
66 struct iio_dev *indio_dev;
67 int err;
68
69 st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
70
71 settings = st_gyro_get_settings(client->name);
72 if (!settings) {
73 dev_err(&client->dev, "device name %s not recognized.\n",
74 client->name);
75 return -ENODEV;
76 }
77
78 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
79 if (!indio_dev)
80 return -ENOMEM;
81
82 gdata = iio_priv(indio_dev);
83 gdata->sensor_settings = (struct st_sensor_settings *)settings;
84
85 err = st_sensors_i2c_configure(indio_dev, client);
86 if (err < 0)
87 return err;
88
89 err = st_sensors_power_enable(indio_dev);
90 if (err)
91 return err;
92
93 err = st_gyro_common_probe(indio_dev);
94 if (err < 0)
95 goto st_gyro_power_off;
96
97 return 0;
98
99 st_gyro_power_off:
100 st_sensors_power_disable(indio_dev);
101
102 return err;
103 }
104
st_gyro_i2c_remove(struct i2c_client * client)105 static int st_gyro_i2c_remove(struct i2c_client *client)
106 {
107 struct iio_dev *indio_dev = i2c_get_clientdata(client);
108
109 st_gyro_common_remove(indio_dev);
110
111 st_sensors_power_disable(indio_dev);
112
113 return 0;
114 }
115
116 static const struct i2c_device_id st_gyro_id_table[] = {
117 { L3G4200D_GYRO_DEV_NAME },
118 { LSM330D_GYRO_DEV_NAME },
119 { LSM330DL_GYRO_DEV_NAME },
120 { LSM330DLC_GYRO_DEV_NAME },
121 { L3GD20_GYRO_DEV_NAME },
122 { L3GD20H_GYRO_DEV_NAME },
123 { L3G4IS_GYRO_DEV_NAME },
124 { LSM330_GYRO_DEV_NAME },
125 { LSM9DS0_GYRO_DEV_NAME },
126 {},
127 };
128 MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
129
130 static struct i2c_driver st_gyro_driver = {
131 .driver = {
132 .name = "st-gyro-i2c",
133 .of_match_table = st_gyro_of_match,
134 },
135 .probe = st_gyro_i2c_probe,
136 .remove = st_gyro_i2c_remove,
137 .id_table = st_gyro_id_table,
138 };
139 module_i2c_driver(st_gyro_driver);
140
141 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
142 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
143 MODULE_LICENSE("GPL v2");
144