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