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 struct dma_attrs;
  20
  21 static inline dma_addr_t
  22 vb2_dma_contig_plane_dma_addr(struct vb2_buffer *vb, unsigned int plane_no)
  23 {
  24         dma_addr_t *addr = vb2_plane_cookie(vb, plane_no);
  25
  26         return *addr;
  27 }
  28
  29 void *vb2_dma_contig_init_ctx_attrs(struct device *dev,
  30                                     struct dma_attrs *attrs);
  31
  32 static inline void *vb2_dma_contig_init_ctx(struct device *dev)
  33 {
  34         return vb2_dma_contig_init_ctx_attrs(dev, NULL);
  35 }
  36
  37 void vb2_dma_contig_cleanup_ctx(void *alloc_ctx);
  38
  39 extern const struct vb2_mem_ops vb2_dma_contig_memops;
  40
  41 #endif