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 */
25static 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};
64MODULE_DEVICE_TABLE(of, st_gyro_of_match);
65
66static 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
100static 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};
112MODULE_DEVICE_TABLE(spi, st_gyro_id_table);
113
114static 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};
122module_spi_driver(st_gyro_driver);
123
124MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
125MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver");
126MODULE_LICENSE("GPL v2");
127MODULE_IMPORT_NS(IIO_ST_SENSORS);
128