3c05484c79
This patch set gyro settings right after probe start. This is done in preparation of regmap that needs different configuration based on multiread bit value. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
138 lines
3.0 KiB
C
138 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* STMicroelectronics gyroscopes driver
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*
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* Copyright 2012-2013 STMicroelectronics Inc.
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*
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* Denis Ciocca <denis.ciocca@st.com>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/spi/spi.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/common/st_sensors.h>
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#include <linux/iio/common/st_sensors_spi.h>
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#include "st_gyro.h"
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#ifdef CONFIG_OF
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/*
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* For new single-chip sensors use <device_name> as compatible string.
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* For old single-chip devices keep <device_name>-gyro to maintain
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* compatibility
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*/
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static const struct of_device_id st_gyro_of_match[] = {
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{
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.compatible = "st,l3g4200d-gyro",
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.data = L3G4200D_GYRO_DEV_NAME,
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},
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{
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.compatible = "st,lsm330d-gyro",
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.data = LSM330D_GYRO_DEV_NAME,
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},
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{
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.compatible = "st,lsm330dl-gyro",
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.data = LSM330DL_GYRO_DEV_NAME,
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},
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{
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.compatible = "st,lsm330dlc-gyro",
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.data = LSM330DLC_GYRO_DEV_NAME,
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},
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{
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.compatible = "st,l3gd20-gyro",
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.data = L3GD20_GYRO_DEV_NAME,
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},
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{
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.compatible = "st,l3gd20h-gyro",
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.data = L3GD20H_GYRO_DEV_NAME,
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},
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{
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.compatible = "st,l3g4is-gyro",
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.data = L3G4IS_GYRO_DEV_NAME,
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},
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{
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.compatible = "st,lsm330-gyro",
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.data = LSM330_GYRO_DEV_NAME,
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},
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{
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.compatible = "st,lsm9ds0-gyro",
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.data = LSM9DS0_GYRO_DEV_NAME,
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},
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{},
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};
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MODULE_DEVICE_TABLE(of, st_gyro_of_match);
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#else
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#define st_gyro_of_match NULL
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#endif
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static int st_gyro_spi_probe(struct spi_device *spi)
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{
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const struct st_sensor_settings *settings;
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struct st_sensor_data *gdata;
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struct iio_dev *indio_dev;
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int err;
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st_sensors_of_name_probe(&spi->dev, st_gyro_of_match,
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spi->modalias, sizeof(spi->modalias));
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settings = st_gyro_get_settings(spi->modalias);
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if (!settings) {
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dev_err(&spi->dev, "device name %s not recognized.\n",
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spi->modalias);
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return -ENODEV;
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}
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indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*gdata));
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if (!indio_dev)
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return -ENOMEM;
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gdata = iio_priv(indio_dev);
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gdata->sensor_settings = (struct st_sensor_settings *)settings;
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st_sensors_spi_configure(indio_dev, spi, gdata);
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err = st_gyro_common_probe(indio_dev);
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if (err < 0)
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return err;
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return 0;
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}
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static int st_gyro_spi_remove(struct spi_device *spi)
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{
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st_gyro_common_remove(spi_get_drvdata(spi));
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return 0;
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}
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static const struct spi_device_id st_gyro_id_table[] = {
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{ L3G4200D_GYRO_DEV_NAME },
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{ LSM330D_GYRO_DEV_NAME },
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{ LSM330DL_GYRO_DEV_NAME },
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{ LSM330DLC_GYRO_DEV_NAME },
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{ L3GD20_GYRO_DEV_NAME },
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{ L3GD20H_GYRO_DEV_NAME },
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{ L3G4IS_GYRO_DEV_NAME },
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{ LSM330_GYRO_DEV_NAME },
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{ LSM9DS0_GYRO_DEV_NAME },
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{},
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};
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MODULE_DEVICE_TABLE(spi, st_gyro_id_table);
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static struct spi_driver st_gyro_driver = {
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.driver = {
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.name = "st-gyro-spi",
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.of_match_table = of_match_ptr(st_gyro_of_match),
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},
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.probe = st_gyro_spi_probe,
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.remove = st_gyro_spi_remove,
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.id_table = st_gyro_id_table,
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};
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module_spi_driver(st_gyro_driver);
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MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver");
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MODULE_LICENSE("GPL v2");
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