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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 * Drivers should use the specialized macros below instead of using this one
24 * directly.
25 */
26
27#define _IIO_EVENT_CODE(chan_type, diff, modifier, direction, \
28 type, chan, chan1, chan2) \
29 (((u64)type << 56) | ((u64)diff << 55) | \
30 ((u64)direction << 48) | ((u64)modifier << 40) | \
31 ((u64)chan_type << 32) | (((u16)chan2) << 16) | ((u16)chan1) | \
32 ((u16)chan))
33
34
35/**
36 * IIO_MOD_EVENT_CODE() - create event identifier for modified (non
37 * differential) channels
38 * @chan_type: Type of the channel. Should be one of enum iio_chan_type.
39 * @number: Channel number.
40 * @modifier: Modifier for the channel. Should be one of enum iio_modifier.
41 * @type: Type of the event. Should be one of enum iio_event_type.
42 * @direction: Direction of the event. One of enum iio_event_direction.
43 */
44
45#define IIO_MOD_EVENT_CODE(chan_type, number, modifier, \
46 type, direction) \
47 _IIO_EVENT_CODE(chan_type, 0, modifier, direction, type, number, 0, 0)
48
49/**
50 * IIO_UNMOD_EVENT_CODE() - create event identifier for unmodified (non
51 * differential) channels
52 * @chan_type: Type of the channel. Should be one of enum iio_chan_type.
53 * @number: Channel number.
54 * @type: Type of the event. Should be one of enum iio_event_type.
55 * @direction: Direction of the event. One of enum iio_event_direction.
56 */
57
58#define IIO_UNMOD_EVENT_CODE(chan_type, number, type, direction) \
59 _IIO_EVENT_CODE(chan_type, 0, 0, direction, type, number, 0, 0)
60
61/**
62 * IIO_DIFF_EVENT_CODE() - create event identifier for differential channels
63 * @chan_type: Type of the channel. Should be one of enum iio_chan_type.
64 * @chan1: First channel number for differential channels.
65 * @chan2: Second channel number for differential channels.
66 * @type: Type of the event. Should be one of enum iio_event_type.
67 * @direction: Direction of the event. One of enum iio_event_direction.
68 */
69
70#define IIO_DIFF_EVENT_CODE(chan_type, chan1, chan2, type, direction) \
71 _IIO_EVENT_CODE(chan_type, 1, 0, direction, type, 0, chan1, chan2)
72
73#endif