forked from mirrors/linux
d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* 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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#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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