LXR linux/include/linux/iio/events.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/* The industrial I/O - event passing to userspace
   3 *
   4 * Copyright (c) 2008-2011 Jonathan Cameron
   5 */
   6#ifndef _IIO_EVENTS_H_
   7#define _IIO_EVENTS_H_
   8
   9#include <linux/iio/types.h>
  10#include <uapi/linux/iio/events.h>
  11
  12/**
  13 * IIO_EVENT_CODE() - create event identifier
  14 * @chan_type:  Type of the channel. Should be one of enum iio_chan_type.
  15 * @diff:       Whether the event is for an differential channel or not.
  16 * @modifier:   Modifier for the channel. Should be one of enum iio_modifier.
  17 * @direction:  Direction of the event. One of enum iio_event_direction.
  18 * @type:       Type of the event. Should be one of enum iio_event_type.
  19 * @chan:       Channel number for non-differential channels.
  20 * @chan1:      First channel number for differential channels.
  21 * @chan2:      Second channel number for differential channels.
  22 */
  23
  24#define IIO_EVENT_CODE(chan_type, diff, modifier, direction,            \
  25                       type, chan, chan1, chan2)                        \
  26        (((u64)type << 56) | ((u64)diff << 55) |                        \
  27         ((u64)direction << 48) | ((u64)modifier << 40) |               \
  28         ((u64)chan_type << 32) | (((u16)chan2) << 16) | ((u16)chan1) | \
  29         ((u16)chan))
  30
  31
  32/**
  33 * IIO_MOD_EVENT_CODE() - create event identifier for modified channels
  34 * @chan_type:  Type of the channel. Should be one of enum iio_chan_type.
  35 * @number:     Channel number.
  36 * @modifier:   Modifier for the channel. Should be one of enum iio_modifier.
  37 * @type:       Type of the event. Should be one of enum iio_event_type.
  38 * @direction:  Direction of the event. One of enum iio_event_direction.
  39 */
  40
  41#define IIO_MOD_EVENT_CODE(chan_type, number, modifier,         \
  42                           type, direction)                             \
  43        IIO_EVENT_CODE(chan_type, 0, modifier, direction, type, number, 0, 0)
  44
  45/**
  46 * IIO_UNMOD_EVENT_CODE() - create event identifier for unmodified channels
  47 * @chan_type:  Type of the channel. Should be one of enum iio_chan_type.
  48 * @number:     Channel number.
  49 * @type:       Type of the event. Should be one of enum iio_event_type.
  50 * @direction:  Direction of the event. One of enum iio_event_direction.
  51 */
  52
  53#define IIO_UNMOD_EVENT_CODE(chan_type, number, type, direction)        \
  54        IIO_EVENT_CODE(chan_type, 0, 0, direction, type, number, 0, 0)
  55
  56#endif
  57