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/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	err = st_gyro_common_probe(indio_dev);
98	if (err < 0)
99		goto st_gyro_power_off;
100
101	return 0;
102
103st_gyro_power_off:
104	st_sensors_power_disable(indio_dev);
105
106	return err;
107}
108
109static int st_gyro_spi_remove(struct spi_device *spi)
110{
111	struct iio_dev *indio_dev = spi_get_drvdata(spi);
112
113	st_gyro_common_remove(indio_dev);
114
115	st_sensors_power_disable(indio_dev);
116
117	return 0;
118}
119
120static const struct spi_device_id st_gyro_id_table[] = {
121	{ L3G4200D_GYRO_DEV_NAME },
122	{ LSM330D_GYRO_DEV_NAME },
123	{ LSM330DL_GYRO_DEV_NAME },
124	{ LSM330DLC_GYRO_DEV_NAME },
125	{ L3GD20_GYRO_DEV_NAME },
126	{ L3GD20H_GYRO_DEV_NAME },
127	{ L3G4IS_GYRO_DEV_NAME },
128	{ LSM330_GYRO_DEV_NAME },
129	{ LSM9DS0_GYRO_DEV_NAME },
130	{},
131};
132MODULE_DEVICE_TABLE(spi, st_gyro_id_table);
133
134static struct spi_driver st_gyro_driver = {
135	.driver = {
136		.name = "st-gyro-spi",
137		.of_match_table = st_gyro_of_match,
138	},
139	.probe = st_gyro_spi_probe,
140	.remove = st_gyro_spi_remove,
141	.id_table = st_gyro_id_table,
142};
143module_spi_driver(st_gyro_driver);
144
145MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
146MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver");
147MODULE_LICENSE("GPL v2");
148