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
19struct dma_attrs;
20
21static inline dma_addr_t
22vb2_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
29void *vb2_dma_contig_init_ctx_attrs(struct device *dev,
30				    struct dma_attrs *attrs);
31
32static inline void *vb2_dma_contig_init_ctx(struct device *dev)
33{
34	return vb2_dma_contig_init_ctx_attrs(dev, NULL);
35}
36
37void vb2_dma_contig_cleanup_ctx(void *alloc_ctx);
38
39extern const struct vb2_mem_ops vb2_dma_contig_memops;
40
41#endif

 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);
28static inline void vb2_dma_contig_clear_max_seg_size(struct device *dev) { }
 
 
 
 
 
 
 
29
30extern const struct vb2_mem_ops vb2_dma_contig_memops;
31
32#endif