LXR linux/drivers/iio/magnetometer/st_magn

   1/*
   2 * STMicroelectronics magnetometers driver
   3 *
   4 * Copyright 2012-2013 STMicroelectronics Inc.
   5 *
   6 * Denis Ciocca <denis.ciocca@st.com>
   7 *
   8 * Licensed under the GPL-2.
   9 */
  10
  11#include <linux/kernel.h>
  12#include <linux/module.h>
  13#include <linux/slab.h>
  14#include <linux/spi/spi.h>
  15#include <linux/iio/iio.h>
  16
  17#include <linux/iio/common/st_sensors.h>
  18#include <linux/iio/common/st_sensors_spi.h>
  19#include "st_magn.h"
  20
  21static int st_magn_spi_probe(struct spi_device *spi)
  22{
  23        struct iio_dev *indio_dev;
  24        struct st_sensor_data *mdata;
  25        int err;
  26
  27        indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*mdata));
  28        if (!indio_dev)
  29                return -ENOMEM;
  30
  31        mdata = iio_priv(indio_dev);
  32
  33        st_sensors_spi_configure(indio_dev, spi, mdata);
  34
  35        err = st_magn_common_probe(indio_dev);
  36        if (err < 0)
  37                return err;
  38
  39        return 0;
  40}
  41
  42static int st_magn_spi_remove(struct spi_device *spi)
  43{
  44        struct iio_dev *indio_dev = spi_get_drvdata(spi);
  45        st_magn_common_remove(indio_dev);
  46
  47        return 0;
  48}
  49
  50static const struct spi_device_id st_magn_id_table[] = {
  51        { LIS3MDL_MAGN_DEV_NAME },
  52        { LSM303AGR_MAGN_DEV_NAME },
  53        {},
  54};
  55MODULE_DEVICE_TABLE(spi, st_magn_id_table);
  56
  57static struct spi_driver st_magn_driver = {
  58        .driver = {
  59                .name = "st-magn-spi",
  60        },
  61        .probe = st_magn_spi_probe,
  62        .remove = st_magn_spi_remove,
  63        .id_table = st_magn_id_table,
  64};
  65module_spi_driver(st_magn_driver);
  66
  67MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  68MODULE_DESCRIPTION("STMicroelectronics magnetometers spi driver");
  69MODULE_LICENSE("GPL v2");
  70