Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
Christopher Ferris | 12e1f28 | 2016-02-04 12:35:07 -0800 | [diff] [blame] | 2 | /* The industrial I/O - event passing to userspace |
| 3 | * |
| 4 | * Copyright (c) 2008-2011 Jonathan Cameron |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License version 2 as published by |
| 8 | * 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 userspace |
| 18 | * @id: event identifier |
| 19 | * @timestamp: best estimate of time of event occurrence (often from |
| 20 | * the interrupt handler) |
| 21 | */ |
| 22 | struct 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_ */ |