/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* The industrial I/O - event passing to userspace * * Copyright (c) 2008-2011 Jonathan Cameron * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ #ifndef _IIO_EVENTS_H_ #define _IIO_EVENTS_H_ #include <linux/ioctl.h> #include <linux/types.h> /** * struct iio_event_data - The actual event being pushed to userspace * @id: event identifier * @timestamp: best estimate of time of event occurrence (often from * the interrupt handler) */ struct iio_event_data { __u64 id; __s64 timestamp; }; #define IIO_GET_EVENT_FD_IOCTL _IOR('i', 0x90, int) #define IIO_EVENT_CODE_EXTRACT_TYPE(mask) ((mask >> 56) & 0xFF) #define IIO_EVENT_CODE_EXTRACT_DIR(mask) ((mask >> 48) & 0x7F) #define IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(mask) ((mask >> 32) & 0xFF) /* Event code number extraction depends on which type of event we have. * Perhaps review this function in the future*/ #define IIO_EVENT_CODE_EXTRACT_CHAN(mask) ((__s16)(mask & 0xFFFF)) #define IIO_EVENT_CODE_EXTRACT_CHAN2(mask) ((__s16)(((mask) >> 16) & 0xFFFF)) #define IIO_EVENT_CODE_EXTRACT_MODIFIER(mask) ((mask >> 40) & 0xFF) #define IIO_EVENT_CODE_EXTRACT_DIFF(mask) (((mask) >> 55) & 0x1) #endif /* _IIO_EVENTS_H_ */