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
  18 struct vb2_dma_sg_desc {
  19         unsigned long           size;
  20         unsigned int            num_pages;
  21         struct scatterlist      *sglist;
  22 };
  23
  24 static 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
  30 extern const struct vb2_mem_ops vb2_dma_sg_memops;
  31
  32 #endif