root/include/linux/iio/events.h

INCLUDED FROM

   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