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