/*
   * 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);

  void vb2_destroy_framevec(struct frame_vector *vec);

  
  #endif