1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun /* The industrial I/O - event passing to userspace 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (c) 2008-2011 Jonathan Cameron 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify it 7*4882a593Smuzhiyun * under the terms of the GNU General Public License version 2 as published by 8*4882a593Smuzhiyun * the Free Software Foundation. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun #ifndef _UAPI_IIO_EVENTS_H_ 11*4882a593Smuzhiyun #define _UAPI_IIO_EVENTS_H_ 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/ioctl.h> 14*4882a593Smuzhiyun #include <linux/types.h> 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /** 17*4882a593Smuzhiyun * struct iio_event_data - The actual event being pushed to userspace 18*4882a593Smuzhiyun * @id: event identifier 19*4882a593Smuzhiyun * @timestamp: best estimate of time of event occurrence (often from 20*4882a593Smuzhiyun * the interrupt handler) 21*4882a593Smuzhiyun */ 22*4882a593Smuzhiyun struct iio_event_data { 23*4882a593Smuzhiyun __u64 id; 24*4882a593Smuzhiyun __s64 timestamp; 25*4882a593Smuzhiyun }; 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #define IIO_GET_EVENT_FD_IOCTL _IOR('i', 0x90, int) 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun #define IIO_EVENT_CODE_EXTRACT_TYPE(mask) ((mask >> 56) & 0xFF) 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun #define IIO_EVENT_CODE_EXTRACT_DIR(mask) ((mask >> 48) & 0x7F) 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #define IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(mask) ((mask >> 32) & 0xFF) 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun /* Event code number extraction depends on which type of event we have. 36*4882a593Smuzhiyun * Perhaps review this function in the future*/ 37*4882a593Smuzhiyun #define IIO_EVENT_CODE_EXTRACT_CHAN(mask) ((__s16)(mask & 0xFFFF)) 38*4882a593Smuzhiyun #define IIO_EVENT_CODE_EXTRACT_CHAN2(mask) ((__s16)(((mask) >> 16) & 0xFFFF)) 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun #define IIO_EVENT_CODE_EXTRACT_MODIFIER(mask) ((mask >> 40) & 0xFF) 41*4882a593Smuzhiyun #define IIO_EVENT_CODE_EXTRACT_DIFF(mask) (((mask) >> 55) & 0x1) 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #endif /* _UAPI_IIO_EVENTS_H_ */ 44