2010-12-09 16:20:47 +03:00
|
|
|
/*
|
|
|
|
|
* videobuf2-memops.h - generic memory handling routines for videobuf2
|
|
|
|
|
*
|
|
|
|
|
* Copyright (C) 2010 Samsung Electronics
|
|
|
|
|
*
|
2011-03-13 21:23:32 +03:00
|
|
|
* Author: Pawel Osciak <pawel@osciak.com>
|
2010-12-09 16:20:47 +03:00
|
|
|
* 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
|
