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// SPDX-License-Identifier: GPL-2.0-only
/*
* STMicroelectronics magnetometers driver
*
* Copyright 2012-2013 STMicroelectronics Inc.
*
* Denis Ciocca <denis.ciocca@st.com>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.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_magn.h"
/*
* For new single-chip sensors use <device_name> as compatible string.
* For old single-chip devices keep <device_name>-magn to maintain
* compatibility
* For multi-chip devices, use <device_name>-magn to distinguish which
* capability is being used
*/
static const struct of_device_id st_magn_of_match[] = {
{
.compatible = "st,lis3mdl-magn",
.data = LIS3MDL_MAGN_DEV_NAME,
},
{
.compatible = "st,lsm303agr-magn",
.data = LSM303AGR_MAGN_DEV_NAME,
},
{
.compatible = "st,lis2mdl",
.data = LIS2MDL_MAGN_DEV_NAME,
},
{
.compatible = "st,lsm9ds1-magn",
.data = LSM9DS1_MAGN_DEV_NAME,
},
{}
};
MODULE_DEVICE_TABLE(of, st_magn_of_match);
static int st_magn_spi_probe(struct spi_device *spi)
{
const struct st_sensor_settings *settings;
struct st_sensor_data *mdata;
struct iio_dev *indio_dev;
int err;
st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
settings = st_magn_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(*mdata));
if (!indio_dev)
return -ENOMEM;
mdata = iio_priv(indio_dev);
mdata->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;
err = st_magn_common_probe(indio_dev);
if (err < 0)
goto st_magn_power_off;
return 0;
st_magn_power_off:
st_sensors_power_disable(indio_dev);
return err;
}
static int st_magn_spi_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
st_magn_common_remove(indio_dev);
st_sensors_power_disable(indio_dev);
return 0;
}
static const struct spi_device_id st_magn_id_table[] = {
{ LIS3MDL_MAGN_DEV_NAME },
{ LSM303AGR_MAGN_DEV_NAME },
{ LIS2MDL_MAGN_DEV_NAME },
{ LSM9DS1_MAGN_DEV_NAME },
{},
};
MODULE_DEVICE_TABLE(spi, st_magn_id_table);
static struct spi_driver st_magn_driver = {
.driver = {
.name = "st-magn-spi",
.of_match_table = st_magn_of_match,
},
.probe = st_magn_spi_probe,
.remove = st_magn_spi_remove,
.id_table = st_magn_id_table,
};
module_spi_driver(st_magn_driver);
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
MODULE_DESCRIPTION("STMicroelectronics magnetometers spi driver");
MODULE_LICENSE("GPL v2");
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