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 int vb2_dma_contig_set_max_seg_size(struct device *dev, unsigned int size);
30 void vb2_dma_contig_clear_max_seg_size(struct device *dev);
31 
32 extern const struct vb2_mem_ops vb2_dma_contig_memops;
33 
34 #endif
35