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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/* The industrial I/O - event passing to userspace3 *4 * Copyright (c) 2008-2011 Jonathan Cameron5 *6 * This program is free software; you can redistribute it and/or modify it7 * under the terms of the GNU General Public License version 2 as published by8 * the Free Software Foundation.9 */10#ifndef _UAPI_IIO_EVENTS_H_11#define _UAPI_IIO_EVENTS_H_12 13#include <linux/ioctl.h>14#include <linux/types.h>15 16/**17 * struct iio_event_data - The actual event being pushed to userspace18 * @id: event identifier19 * @timestamp: best estimate of time of event occurrence (often from20 * the interrupt handler)21 */22struct iio_event_data {23 __u64 id;24 __s64 timestamp;25};26 27#define IIO_GET_EVENT_FD_IOCTL _IOR('i', 0x90, int)28 29#define IIO_EVENT_CODE_EXTRACT_TYPE(mask) ((mask >> 56) & 0xFF)30 31#define IIO_EVENT_CODE_EXTRACT_DIR(mask) ((mask >> 48) & 0x7F)32 33#define IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(mask) ((mask >> 32) & 0xFF)34 35/* Event code number extraction depends on which type of event we have.36 * Perhaps review this function in the future*/37#define IIO_EVENT_CODE_EXTRACT_CHAN(mask) ((__s16)(mask & 0xFFFF))38#define IIO_EVENT_CODE_EXTRACT_CHAN2(mask) ((__s16)(((mask) >> 16) & 0xFFFF))39 40#define IIO_EVENT_CODE_EXTRACT_MODIFIER(mask) ((mask >> 40) & 0xFF)41#define IIO_EVENT_CODE_EXTRACT_DIFF(mask) (((mask) >> 55) & 0x1)42 43#endif /* _UAPI_IIO_EVENTS_H_ */44