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
  19 static inline dma_addr_t
  20 vb2_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
  27 int vb2_dma_contig_set_max_seg_size(struct device *dev, unsigned int size);
  28 void vb2_dma_contig_clear_max_seg_size(struct device *dev);
  29
  30 extern const struct vb2_mem_ops vb2_dma_contig_memops;
  31
  32 #endif