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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
293487c8 DB |
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_ */ |