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/spi/spi.h>
15 #include <linux/iio/iio.h>
16
17 #include <linux/iio/common/st_sensors.h>
18 #include <linux/iio/common/st_sensors_spi.h>
19 #include "st_gyro.h"
20
21 #ifdef CONFIG_OF
22 /*
23 * For new single-chip sensors use <device_name> as compatible string.
24 * For old single-chip devices keep <device_name>-gyro to maintain
25 * compatibility
26 */
27 static const struct of_device_id st_gyro_of_match[] = {
28 {
29 .compatible = "st,l3g4200d-gyro",
30 .data = L3G4200D_GYRO_DEV_NAME,
31 },
32 {
33 .compatible = "st,lsm330d-gyro",
34 .data = LSM330D_GYRO_DEV_NAME,
35 },
36 {
37 .compatible = "st,lsm330dl-gyro",
38 .data = LSM330DL_GYRO_DEV_NAME,
39 },
40 {
41 .compatible = "st,lsm330dlc-gyro",
42 .data = LSM330DLC_GYRO_DEV_NAME,
43 },
44 {
45 .compatible = "st,l3gd20-gyro",
46 .data = L3GD20_GYRO_DEV_NAME,
47 },
48 {
49 .compatible = "st,l3gd20h-gyro",
50 .data = L3GD20H_GYRO_DEV_NAME,
51 },
52 {
53 .compatible = "st,l3g4is-gyro",
54 .data = L3G4IS_GYRO_DEV_NAME,
55 },
56 {
57 .compatible = "st,lsm330-gyro",
58 .data = LSM330_GYRO_DEV_NAME,
59 },
60 {
61 .compatible = "st,lsm9ds0-gyro",
62 .data = LSM9DS0_GYRO_DEV_NAME,
63 },
64 {},
65 };
66 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
67 #else
68 #define st_gyro_of_match NULL
69 #endif
70
st_gyro_spi_probe(struct spi_device * spi)71 static int st_gyro_spi_probe(struct spi_device *spi)
72 {
73 struct iio_dev *indio_dev;
74 struct st_sensor_data *gdata;
75 int err;
76
77 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*gdata));
78 if (!indio_dev)
79 return -ENOMEM;
80
81 gdata = iio_priv(indio_dev);
82
83 st_sensors_of_name_probe(&spi->dev, st_gyro_of_match,
84 spi->modalias, sizeof(spi->modalias));
85 st_sensors_spi_configure(indio_dev, spi, gdata);
86
87 err = st_gyro_common_probe(indio_dev);
88 if (err < 0)
89 return err;
90
91 return 0;
92 }
93
st_gyro_spi_remove(struct spi_device * spi)94 static int st_gyro_spi_remove(struct spi_device *spi)
95 {
96 st_gyro_common_remove(spi_get_drvdata(spi));
97
98 return 0;
99 }
100
101 static const struct spi_device_id st_gyro_id_table[] = {
102 { L3G4200D_GYRO_DEV_NAME },
103 { LSM330D_GYRO_DEV_NAME },
104 { LSM330DL_GYRO_DEV_NAME },
105 { LSM330DLC_GYRO_DEV_NAME },
106 { L3GD20_GYRO_DEV_NAME },
107 { L3GD20H_GYRO_DEV_NAME },
108 { L3G4IS_GYRO_DEV_NAME },
109 { LSM330_GYRO_DEV_NAME },
110 { LSM9DS0_GYRO_DEV_NAME },
111 {},
112 };
113 MODULE_DEVICE_TABLE(spi, st_gyro_id_table);
114
115 static struct spi_driver st_gyro_driver = {
116 .driver = {
117 .name = "st-gyro-spi",
118 .of_match_table = of_match_ptr(st_gyro_of_match),
119 },
120 .probe = st_gyro_spi_probe,
121 .remove = st_gyro_spi_remove,
122 .id_table = st_gyro_id_table,
123 };
124 module_spi_driver(st_gyro_driver);
125
126 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
127 MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver");
128 MODULE_LICENSE("GPL v2");
129
