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43 lines
1.4 KiB
43 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* The industrial I/O - event passing to userspace |
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* |
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* Copyright (c) 2008-2011 Jonathan Cameron |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 as published by |
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* the Free Software Foundation. |
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*/ |
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#ifndef _UAPI_IIO_EVENTS_H_ |
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#define _UAPI_IIO_EVENTS_H_ |
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#include <linux/ioctl.h> |
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#include <linux/types.h> |
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/** |
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* struct iio_event_data - The actual event being pushed to userspace |
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* @id: event identifier |
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* @timestamp: best estimate of time of event occurrence (often from |
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* the interrupt handler) |
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*/ |
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struct iio_event_data { |
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__u64 id; |
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__s64 timestamp; |
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}; |
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#define IIO_GET_EVENT_FD_IOCTL _IOR('i', 0x90, int) |
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#define IIO_EVENT_CODE_EXTRACT_TYPE(mask) ((mask >> 56) & 0xFF) |
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#define IIO_EVENT_CODE_EXTRACT_DIR(mask) ((mask >> 48) & 0x7F) |
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#define IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(mask) ((mask >> 32) & 0xFF) |
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/* Event code number extraction depends on which type of event we have. |
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* Perhaps review this function in the future*/ |
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#define IIO_EVENT_CODE_EXTRACT_CHAN(mask) ((__s16)(mask & 0xFFFF)) |
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#define IIO_EVENT_CODE_EXTRACT_CHAN2(mask) ((__s16)(((mask) >> 16) & 0xFFFF)) |
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#define IIO_EVENT_CODE_EXTRACT_MODIFIER(mask) ((mask >> 40) & 0xFF) |
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#define IIO_EVENT_CODE_EXTRACT_DIFF(mask) (((mask) >> 55) & 0x1) |
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#endif /* _UAPI_IIO_EVENTS_H_ */
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