0d92aa2c27
Update the sensor settings to support the LSM9DS1 sensor. Although the LSM9DS1 accelerometer and gyroscope are coupled together to use the same FIFO, the magnetometer is separate and can be cleanly supported without refactoring the existing driver. Signed-off-by: Martin Kelly <martin@martingkelly.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
/*
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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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* Licensed under the GPL-2.
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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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#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>-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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#else
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#define st_magn_of_match NULL
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#endif
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static int st_magn_spi_probe(struct spi_device *spi)
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{
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struct iio_dev *indio_dev;
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struct st_sensor_data *mdata;
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int err;
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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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st_sensors_of_name_probe(&spi->dev, st_magn_of_match,
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spi->modalias, sizeof(spi->modalias));
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st_sensors_spi_configure(indio_dev, spi, mdata);
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err = st_magn_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_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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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 = of_match_ptr(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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