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/*
* videobuf2-memops.h - generic memory handling routines for videobuf2
*
* Copyright (C) 2010 Samsung Electronics
*
* Author: Pawel Osciak <pawel@osciak.com>
* Marek Szyprowski <m.szyprowski@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*/
#ifndef _MEDIA_VIDEOBUF2_MEMOPS_H
#define _MEDIA_VIDEOBUF2_MEMOPS_H
#include <media/videobuf2-v4l2.h>
#include <linux/mm.h>
#include <linux/refcount.h>
/**
* struct vb2_vmarea_handler - common vma refcount tracking handler.
*
* @refcount: pointer to &refcount_t entry in the buffer.
* @put: callback to function that decreases buffer refcount.
* @arg: argument for @put callback.
*/
struct vb2_vmarea_handler {
refcount_t *refcount;
void (*put)(void *arg);
void *arg;
};
extern const struct vm_operations_struct vb2_common_vm_ops;
struct frame_vector *vb2_create_framevec(unsigned long start,
unsigned long length,
bool write);
void vb2_destroy_framevec(struct frame_vector *vec);
#endif