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