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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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ccf54555da
The direction field is set on 7 bits, thus we need to AND it with 0111 111 mask
in order to retrieve it, that is 0x7F, not 0xCF as it is now.
Fixes: ade7ef7ba (staging:iio: Differential channel handling)
Signed-off-by: Cristina Ciocan <cristina.ciocan@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
/* 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 _IIO_EVENTS_H_
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#define _IIO_EVENTS_H_
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include <linux/iio/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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/**
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* IIO_EVENT_CODE() - create event identifier
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* @chan_type: Type of the channel. Should be one of enum iio_chan_type.
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* @diff: Whether the event is for an differential channel or not.
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* @modifier: Modifier for the channel. Should be one of enum iio_modifier.
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* @direction: Direction of the event. One of enum iio_event_direction.
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* @type: Type of the event. Should be one of enum iio_event_type.
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* @chan: Channel number for non-differential channels.
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* @chan1: First channel number for differential channels.
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* @chan2: Second channel number for differential channels.
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*/
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#define IIO_EVENT_CODE(chan_type, diff, modifier, direction, \
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type, chan, chan1, chan2) \
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(((u64)type << 56) | ((u64)diff << 55) | \
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((u64)direction << 48) | ((u64)modifier << 40) | \
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((u64)chan_type << 32) | (((u16)chan2) << 16) | ((u16)chan1) | \
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((u16)chan))
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/**
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* IIO_MOD_EVENT_CODE() - create event identifier for modified channels
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* @chan_type: Type of the channel. Should be one of enum iio_chan_type.
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* @number: Channel number.
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* @modifier: Modifier for the channel. Should be one of enum iio_modifier.
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* @type: Type of the event. Should be one of enum iio_event_type.
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* @direction: Direction of the event. One of enum iio_event_direction.
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*/
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#define IIO_MOD_EVENT_CODE(chan_type, number, modifier, \
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type, direction) \
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IIO_EVENT_CODE(chan_type, 0, modifier, direction, type, number, 0, 0)
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/**
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* IIO_UNMOD_EVENT_CODE() - create event identifier for unmodified channels
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* @chan_type: Type of the channel. Should be one of enum iio_chan_type.
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* @number: Channel number.
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* @type: Type of the event. Should be one of enum iio_event_type.
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* @direction: Direction of the event. One of enum iio_event_direction.
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*/
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#define IIO_UNMOD_EVENT_CODE(chan_type, number, type, direction) \
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IIO_EVENT_CODE(chan_type, 0, 0, direction, type, number, 0, 0)
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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
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