iio/gyro/st_gyro_spi.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * STMicroelectronics gyroscopes driver
0004  *
0005  * Copyright 2012-2013 STMicroelectronics Inc.
0006  *
0007  * Denis Ciocca <denis.ciocca@st.com>
0008  */
0009
0010 #include <linux/kernel.h>
0011 #include <linux/module.h>
0012 #include <linux/mod_devicetable.h>
0013 #include <linux/spi/spi.h>
0014 #include <linux/iio/iio.h>
0015
0016 #include <linux/iio/common/st_sensors.h>
0017 #include <linux/iio/common/st_sensors_spi.h>
0018 #include "st_gyro.h"
0019
0020 /*
0021  * For new single-chip sensors use <device_name> as compatible string.
0022  * For old single-chip devices keep <device_name>-gyro to maintain
0023  * compatibility
0024  */
0025 static const struct of_device_id st_gyro_of_match[] = {
0026     {
0027         .compatible = "st,l3g4200d-gyro",
0028         .data = L3G4200D_GYRO_DEV_NAME,
0029     },
0030     {
0031         .compatible = "st,lsm330d-gyro",
0032         .data = LSM330D_GYRO_DEV_NAME,
0033     },
0034     {
0035         .compatible = "st,lsm330dl-gyro",
0036         .data = LSM330DL_GYRO_DEV_NAME,
0037     },
0038     {
0039         .compatible = "st,lsm330dlc-gyro",
0040         .data = LSM330DLC_GYRO_DEV_NAME,
0041     },
0042     {
0043         .compatible = "st,l3gd20-gyro",
0044         .data = L3GD20_GYRO_DEV_NAME,
0045     },
0046     {
0047         .compatible = "st,l3gd20h-gyro",
0048         .data = L3GD20H_GYRO_DEV_NAME,
0049     },
0050     {
0051         .compatible = "st,l3g4is-gyro",
0052         .data = L3G4IS_GYRO_DEV_NAME,
0053     },
0054     {
0055         .compatible = "st,lsm330-gyro",
0056         .data = LSM330_GYRO_DEV_NAME,
0057     },
0058     {
0059         .compatible = "st,lsm9ds0-gyro",
0060         .data = LSM9DS0_GYRO_DEV_NAME,
0061     },
0062     {},
0063 };
0064 MODULE_DEVICE_TABLE(of, st_gyro_of_match);
0065
0066 static int st_gyro_spi_probe(struct spi_device *spi)
0067 {
0068     const struct st_sensor_settings *settings;
0069     struct st_sensor_data *gdata;
0070     struct iio_dev *indio_dev;
0071     int err;
0072
0073     st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
0074
0075     settings = st_gyro_get_settings(spi->modalias);
0076     if (!settings) {
0077         dev_err(&spi->dev, "device name %s not recognized.\n",
0078             spi->modalias);
0079         return -ENODEV;
0080     }
0081
0082     indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*gdata));
0083     if (!indio_dev)
0084         return -ENOMEM;
0085
0086     gdata = iio_priv(indio_dev);
0087     gdata->sensor_settings = (struct st_sensor_settings *)settings;
0088
0089     err = st_sensors_spi_configure(indio_dev, spi);
0090     if (err < 0)
0091         return err;
0092
0093     err = st_sensors_power_enable(indio_dev);
0094     if (err)
0095         return err;
0096
0097     return st_gyro_common_probe(indio_dev);
0098 }
0099
0100 static const struct spi_device_id st_gyro_id_table[] = {
0101     { L3G4200D_GYRO_DEV_NAME },
0102     { LSM330D_GYRO_DEV_NAME },
0103     { LSM330DL_GYRO_DEV_NAME },
0104     { LSM330DLC_GYRO_DEV_NAME },
0105     { L3GD20_GYRO_DEV_NAME },
0106     { L3GD20H_GYRO_DEV_NAME },
0107     { L3G4IS_GYRO_DEV_NAME },
0108     { LSM330_GYRO_DEV_NAME },
0109     { LSM9DS0_GYRO_DEV_NAME },
0110     {},
0111 };
0112 MODULE_DEVICE_TABLE(spi, st_gyro_id_table);
0113
0114 static struct spi_driver st_gyro_driver = {
0115     .driver = {
0116         .name = "st-gyro-spi",
0117         .of_match_table = st_gyro_of_match,
0118     },
0119     .probe = st_gyro_spi_probe,
0120     .id_table = st_gyro_id_table,
0121 };
0122 module_spi_driver(st_gyro_driver);
0123
0124 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
0125 MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver");
0126 MODULE_LICENSE("GPL v2");
0127 MODULE_IMPORT_NS(IIO_ST_SENSORS);