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);