LXR linux/include/media/videobuf2-dma-sg.h

   1/*
   2 * videobuf2-dma-sg.h - DMA scatter/gather memory allocator for videobuf2
   3 *
   4 * Copyright (C) 2010 Samsung Electronics
   5 *
   6 * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation.
  11 */
  12
  13#ifndef _MEDIA_VIDEOBUF2_DMA_SG_H
  14#define _MEDIA_VIDEOBUF2_DMA_SG_H
  15
  16#include <media/videobuf2-core.h>
  17
  18struct vb2_dma_sg_desc {
  19        unsigned long           size;
  20        unsigned int            num_pages;
  21        struct scatterlist      *sglist;
  22};
  23
  24static inline struct vb2_dma_sg_desc *vb2_dma_sg_plane_desc(
  25                struct vb2_buffer *vb, unsigned int plane_no)
  26{
  27        return (struct vb2_dma_sg_desc *)vb2_plane_cookie(vb, plane_no);
  28}
  29
  30extern const struct vb2_mem_ops vb2_dma_sg_memops;
  31
  32#endif
  33