64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/* The industrial I/O core, trigger consumer functions
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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 __LINUX_IIO_TRIGGER_CONSUMER_H__
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#define __LINUX_IIO_TRIGGER_CONSUMER_H__
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#include <linux/interrupt.h>
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#include <linux/types.h>
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struct iio_dev;
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struct iio_trigger;
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/**
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* struct iio_poll_func - poll function pair
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*
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* @indio_dev: data specific to device (passed into poll func)
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* @h: the function that is actually run on trigger
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* @thread: threaded interrupt part
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* @type: the type of interrupt (basically if oneshot)
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* @name: name used to identify the trigger consumer.
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* @irq: the corresponding irq as allocated from the
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* trigger pool
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* @timestamp: some devices need a timestamp grabbed as soon
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* as possible after the trigger - hence handler
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* passes it via here.
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**/
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struct iio_poll_func {
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struct iio_dev *indio_dev;
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irqreturn_t (*h)(int irq, void *p);
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irqreturn_t (*thread)(int irq, void *p);
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int type;
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char *name;
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int irq;
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s64 timestamp;
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};
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struct iio_poll_func
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*iio_alloc_pollfunc(irqreturn_t (*h)(int irq, void *p),
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irqreturn_t (*thread)(int irq, void *p),
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int type,
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struct iio_dev *indio_dev,
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const char *fmt,
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...);
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void iio_dealloc_pollfunc(struct iio_poll_func *pf);
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irqreturn_t iio_pollfunc_store_time(int irq, void *p);
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void iio_trigger_notify_done(struct iio_trigger *trig);
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/*
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* Two functions for common case where all that happens is a pollfunc
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* is attached and detached from a trigger
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*/
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int iio_triggered_buffer_postenable(struct iio_dev *indio_dev);
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int iio_triggered_buffer_predisable(struct iio_dev *indio_dev);
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#endif
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