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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-core.h>
/**
* vb2_vmarea_handler - common vma refcount tracking handler
* @refcount: pointer to refcount entry in the buffer
* @put: callback to function that decreases buffer refcount
* @arg: argument for @put callback
*/
struct vb2_vmarea_handler {
atomic_t *refcount;
void (*put)(void *arg);
void *arg;
};
extern const struct vm_operations_struct vb2_common_vm_ops;
int vb2_get_contig_userptr(unsigned long vaddr, unsigned long size,
struct vm_area_struct **res_vma, dma_addr_t *res_pa);
struct vm_area_struct *vb2_get_vma(struct vm_area_struct *vma);
void vb2_put_vma(struct vm_area_struct *vma);
#endif