// SPDX-License-Identifier: GPL-2.0-only
/*
 * STMicroelectronics gyroscopes driver
 *
 * Copyright 2012-2013 STMicroelectronics Inc.
 *
 * Denis Ciocca <denis.ciocca@st.com>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/spi/spi.h>
#include <linux/iio/iio.h>

#include <linux/iio/common/st_sensors.h>
#include <linux/iio/common/st_sensors_spi.h>
#include "st_gyro.h"

/*
 * For new single-chip sensors use <device_name> as compatible string.
 * For old single-chip devices keep <device_name>-gyro to maintain
 * compatibility
 */
static const struct of_device_id st_gyro_of_match[] = {
        {
                .compatible = "st,l3g4200d-gyro",
                .data = L3G4200D_GYRO_DEV_NAME,
        },
        {
                .compatible = "st,lsm330d-gyro",
                .data = LSM330D_GYRO_DEV_NAME,
        },
        {
                .compatible = "st,lsm330dl-gyro",
                .data = LSM330DL_GYRO_DEV_NAME,
        },
        {
                .compatible = "st,lsm330dlc-gyro",
                .data = LSM330DLC_GYRO_DEV_NAME,
        },
        {
                .compatible = "st,l3gd20-gyro",
                .data = L3GD20_GYRO_DEV_NAME,
        },
        {
                .compatible = "st,l3gd20h-gyro",
                .data = L3GD20H_GYRO_DEV_NAME,
        },
        {
                .compatible = "st,l3g4is-gyro",
                .data = L3G4IS_GYRO_DEV_NAME,
        },
        {
                .compatible = "st,lsm330-gyro",
                .data = LSM330_GYRO_DEV_NAME,
        },
        {
                .compatible = "st,lsm9ds0-gyro",
                .data = LSM9DS0_GYRO_DEV_NAME,
        },
        { }
};
MODULE_DEVICE_TABLE(of, st_gyro_of_match);

static int st_gyro_spi_probe(struct spi_device *spi)
{
        const struct st_sensor_settings *settings;
        struct st_sensor_data *gdata;
        struct iio_dev *indio_dev;
        int err;

        st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));

        settings = st_gyro_get_settings(spi->modalias);
        if (!settings) {
                dev_err(&spi->dev, "device name %s not recognized.\n",
                        spi->modalias);
                return -ENODEV;
        }

        indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*gdata));
        if (!indio_dev)
                return -ENOMEM;

        gdata = iio_priv(indio_dev);
        gdata->sensor_settings = (struct st_sensor_settings *)settings;

        err = st_sensors_spi_configure(indio_dev, spi);
        if (err < 0)
                return err;

        err = st_sensors_power_enable(indio_dev);
        if (err)
                return err;

        return st_gyro_common_probe(indio_dev);
}

static const struct spi_device_id st_gyro_id_table[] = {
        { L3G4200D_GYRO_DEV_NAME },
        { LSM330D_GYRO_DEV_NAME },
        { LSM330DL_GYRO_DEV_NAME },
        { LSM330DLC_GYRO_DEV_NAME },
        { L3GD20_GYRO_DEV_NAME },
        { L3GD20H_GYRO_DEV_NAME },
        { L3G4IS_GYRO_DEV_NAME },
        { LSM330_GYRO_DEV_NAME },
        { LSM9DS0_GYRO_DEV_NAME },
        { }
};
MODULE_DEVICE_TABLE(spi, st_gyro_id_table);

static struct spi_driver st_gyro_driver = {
        .driver = {
                .name = "st-gyro-spi",
                .of_match_table = st_gyro_of_match,
        },
        .probe = st_gyro_spi_probe,
        .id_table = st_gyro_id_table,
};
module_spi_driver(st_gyro_driver);

MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS("IIO_ST_SENSORS");