tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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