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https://github.com/edk2-porting/linux-next.git
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872e79add7
This patch adds a generic magnetometer driver for STMicroelectronics magnetometers, currently it supports: LSM303DLHC, LSM303DLM, LIS3MDL. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
81 lines
1.7 KiB
C
81 lines
1.7 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/trigger.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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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 = iio_device_alloc(sizeof(*mdata));
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if (indio_dev == NULL) {
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err = -ENOMEM;
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goto iio_device_alloc_error;
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}
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mdata = iio_priv(indio_dev);
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mdata->dev = &spi->dev;
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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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goto st_magn_common_probe_error;
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return 0;
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st_magn_common_probe_error:
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iio_device_free(indio_dev);
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iio_device_alloc_error:
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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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return 0;
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}
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static const struct spi_device_id st_magn_id_table[] = {
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{ LSM303DLHC_MAGN_DEV_NAME },
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{ LSM303DLM_MAGN_DEV_NAME },
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{ LIS3MDL_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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.owner = THIS_MODULE,
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.name = "st-magn-spi",
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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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