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

   1/*
   2 * videobuf2-dma-contig.h - DMA contig memory allocator for videobuf2
   3 *
   4 * Copyright (C) 2010 Samsung Electronics
   5 *
   6 * Author: Pawel Osciak <pawel@osciak.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_CONTIG_H
  14#define _MEDIA_VIDEOBUF2_DMA_CONTIG_H
  15
  16#include <media/videobuf2-v4l2.h>
  17#include <linux/dma-mapping.h>
  18
  19static inline dma_addr_t
  20vb2_dma_contig_plane_dma_addr(struct vb2_buffer *vb, unsigned int plane_no)
  21{
  22        dma_addr_t *addr = vb2_plane_cookie(vb, plane_no);
  23
  24        return *addr;
  25}
  26
  27int vb2_dma_contig_set_max_seg_size(struct device *dev, unsigned int size);
  28void vb2_dma_contig_clear_max_seg_size(struct device *dev);
  29
  30extern const struct vb2_mem_ops vb2_dma_contig_memops;
  31
  32#endif
  33