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/mod_devicetable.h>
13 #include <linux/spi/spi.h>
14 #include <linux/iio/iio.h>
15
16 #include <linux/iio/common/st_sensors.h>
17 #include <linux/iio/common/st_sensors_spi.h>
18 #include "st_gyro.h"
19
20 /*
21 * For new single-chip sensors use <device_name> as compatible string.
22 * For old single-chip devices keep <device_name>-gyro to maintain
23 * compatibility
24 */
25 static const struct of_device_id st_gyro_of_match[] = {
26 {
27 .compatible = "st,l3g4200d-gyro",
28 .data = L3G4200D_GYRO_DEV_NAME,
29 },
30 {
31 .compatible = "st,lsm330d-gyro",
32 .data = LSM330D_GYRO_DEV_NAME,
33 },
34 {
35 .compatible = "st,lsm330dl-gyro",
36 .data = LSM330DL_GYRO_DEV_NAME,
37 },
38 {
39 .compatible = "st,lsm330dlc-gyro",
40 .data = LSM330DLC_GYRO_DEV_NAME,
41 },
42 {
43 .compatible = "st,l3gd20-gyro",
44 .data = L3GD20_GYRO_DEV_NAME,
45 },
46 {
47 .compatible = "st,l3gd20h-gyro",
48 .data = L3GD20H_GYRO_DEV_NAME,
49 },
50 {
51 .compatible = "st,l3g4is-gyro",
52 .data = L3G4IS_GYRO_DEV_NAME,
53 },
54 {
55 .compatible = "st,lsm330-gyro",
56 .data = LSM330_GYRO_DEV_NAME,
57 },
58 {
59 .compatible = "st,lsm9ds0-gyro",
60 .data = LSM9DS0_GYRO_DEV_NAME,
61 },
62 {},
63 };
64 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
65
st_gyro_spi_probe(struct spi_device * spi)66 static int st_gyro_spi_probe(struct spi_device *spi)
67 {
68 const struct st_sensor_settings *settings;
69 struct st_sensor_data *gdata;
70 struct iio_dev *indio_dev;
71 int err;
72
73 st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
74
75 settings = st_gyro_get_settings(spi->modalias);
76 if (!settings) {
77 dev_err(&spi->dev, "device name %s not recognized.\n",
78 spi->modalias);
79 return -ENODEV;
80 }
81
82 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*gdata));
83 if (!indio_dev)
84 return -ENOMEM;
85
86 gdata = iio_priv(indio_dev);
87 gdata->sensor_settings = (struct st_sensor_settings *)settings;
88
89 err = st_sensors_spi_configure(indio_dev, spi);
90 if (err < 0)
91 return err;
92
93 err = st_sensors_power_enable(indio_dev);
94 if (err)
95 return err;
96
97 return st_gyro_common_probe(indio_dev);
98 }
99
100 static const struct spi_device_id st_gyro_id_table[] = {
101 { L3G4200D_GYRO_DEV_NAME },
102 { LSM330D_GYRO_DEV_NAME },
103 { LSM330DL_GYRO_DEV_NAME },
104 { LSM330DLC_GYRO_DEV_NAME },
105 { L3GD20_GYRO_DEV_NAME },
106 { L3GD20H_GYRO_DEV_NAME },
107 { L3G4IS_GYRO_DEV_NAME },
108 { LSM330_GYRO_DEV_NAME },
109 { LSM9DS0_GYRO_DEV_NAME },
110 {},
111 };
112 MODULE_DEVICE_TABLE(spi, st_gyro_id_table);
113
114 static struct spi_driver st_gyro_driver = {
115 .driver = {
116 .name = "st-gyro-spi",
117 .of_match_table = st_gyro_of_match,
118 },
119 .probe = st_gyro_spi_probe,
120 .id_table = st_gyro_id_table,
121 };
122 module_spi_driver(st_gyro_driver);
123
124 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
125 MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver");
126 MODULE_LICENSE("GPL v2");
127