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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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/* The industrial I/O - event passing to userspace

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* This program is free software; you can redistribute it and/or modify it

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* under the terms of the GNU General Public License version 2 as published by

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* the Free Software Foundation.

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#ifndef _IIO_EVENTS_H_

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#define _IIO_EVENTS_H_

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#include <linux/ioctl.h>

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#include <linux/types.h>

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/**

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* struct iio_event_data - The actual event being pushed to userspace

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* @id: event identifier

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* @timestamp: best estimate of time of event occurrence (often from

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* the interrupt handler)

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struct iio_event_data {

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__u64 id;

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__s64 timestamp;

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};

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#define IIO_GET_EVENT_FD_IOCTL _IOR('i', 0x90, int)

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#define IIO_EVENT_CODE_EXTRACT_TYPE(mask) ((mask >> 56) & 0xFF)

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#define IIO_EVENT_CODE_EXTRACT_DIR(mask) ((mask >> 48) & 0x7F)

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#define IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(mask) ((mask >> 32) & 0xFF)

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/* Event code number extraction depends on which type of event we have.

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* Perhaps review this function in the future*/

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#define IIO_EVENT_CODE_EXTRACT_CHAN(mask) ((__s16)(mask & 0xFFFF))

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#define IIO_EVENT_CODE_EXTRACT_CHAN2(mask) ((__s16)(((mask) >> 16) & 0xFFFF))

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#define IIO_EVENT_CODE_EXTRACT_MODIFIER(mask) ((mask >> 40) & 0xFF)

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#define IIO_EVENT_CODE_EXTRACT_DIFF(mask) (((mask) >> 55) & 0x1)

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#endif /* _IIO_EVENTS_H_ */

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