LXR linux/drivers/iio/gyro/st_gyro

   1/*
   2 * STMicroelectronics gyroscopes 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_gyro.h"
  20
  21#ifdef CONFIG_OF
  22/*
  23 * For new single-chip sensors use <device_name> as compatible string.
  24 * For old single-chip devices keep <device_name>-gyro to maintain
  25 * compatibility
  26 */
  27static const struct of_device_id st_gyro_of_match[] = {
  28        {
  29                .compatible = "st,l3g4200d-gyro",
  30                .data = L3G4200D_GYRO_DEV_NAME,
  31        },
  32        {
  33                .compatible = "st,lsm330d-gyro",
  34                .data = LSM330D_GYRO_DEV_NAME,
  35        },
  36        {
  37                .compatible = "st,lsm330dl-gyro",
  38                .data = LSM330DL_GYRO_DEV_NAME,
  39        },
  40        {
  41                .compatible = "st,lsm330dlc-gyro",
  42                .data = LSM330DLC_GYRO_DEV_NAME,
  43        },
  44        {
  45                .compatible = "st,l3gd20-gyro",
  46                .data = L3GD20_GYRO_DEV_NAME,
  47        },
  48        {
  49                .compatible = "st,l3gd20h-gyro",
  50                .data = L3GD20H_GYRO_DEV_NAME,
  51        },
  52        {
  53                .compatible = "st,l3g4is-gyro",
  54                .data = L3G4IS_GYRO_DEV_NAME,
  55        },
  56        {
  57                .compatible = "st,lsm330-gyro",
  58                .data = LSM330_GYRO_DEV_NAME,
  59        },
  60        {
  61                .compatible = "st,lsm9ds0-gyro",
  62                .data = LSM9DS0_GYRO_DEV_NAME,
  63        },
  64        {},
  65};
  66MODULE_DEVICE_TABLE(of, st_gyro_of_match);
  67#else
  68#define st_gyro_of_match        NULL
  69#endif
  70
  71static int st_gyro_spi_probe(struct spi_device *spi)
  72{
  73        struct iio_dev *indio_dev;
  74        struct st_sensor_data *gdata;
  75        int err;
  76
  77        indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*gdata));
  78        if (!indio_dev)
  79                return -ENOMEM;
  80
  81        gdata = iio_priv(indio_dev);
  82
  83        st_sensors_of_name_probe(&spi->dev, st_gyro_of_match,
  84                                 spi->modalias, sizeof(spi->modalias));
  85        st_sensors_spi_configure(indio_dev, spi, gdata);
  86
  87        err = st_gyro_common_probe(indio_dev);
  88        if (err < 0)
  89                return err;
  90
  91        return 0;
  92}
  93
  94static int st_gyro_spi_remove(struct spi_device *spi)
  95{
  96        st_gyro_common_remove(spi_get_drvdata(spi));
  97
  98        return 0;
  99}
 100
 101static const struct spi_device_id st_gyro_id_table[] = {
 102        { L3G4200D_GYRO_DEV_NAME },
 103        { LSM330D_GYRO_DEV_NAME },
 104        { LSM330DL_GYRO_DEV_NAME },
 105        { LSM330DLC_GYRO_DEV_NAME },
 106        { L3GD20_GYRO_DEV_NAME },
 107        { L3GD20H_GYRO_DEV_NAME },
 108        { L3G4IS_GYRO_DEV_NAME },
 109        { LSM330_GYRO_DEV_NAME },
 110        { LSM9DS0_GYRO_DEV_NAME },
 111        {},
 112};
 113MODULE_DEVICE_TABLE(spi, st_gyro_id_table);
 114
 115static struct spi_driver st_gyro_driver = {
 116        .driver = {
 117                .name = "st-gyro-spi",
 118                .of_match_table = of_match_ptr(st_gyro_of_match),
 119        },
 120        .probe = st_gyro_spi_probe,
 121        .remove = st_gyro_spi_remove,
 122        .id_table = st_gyro_id_table,
 123};
 124module_spi_driver(st_gyro_driver);
 125
 126MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 127MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver");
 128MODULE_LICENSE("GPL v2");
 129