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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * STMicroelectronics gyroscopes driver4 *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 maintain23 * compatibility24 */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