| /* 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_ */ |
