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Commit | Line | Data |
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1 | /* | |
2 | * helper functions for physically contiguous capture buffers | |
3 | * | |
4 | * The functions support hardware lacking scatter gather support | |
5 | * (i.e. the buffers must be linear in physical memory) | |
6 | * | |
7 | * Copyright (c) 2008 Magnus Damm | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 | |
12 | */ | |
13 | #ifndef _VIDEOBUF_DMA_CONTIG_H | |
14 | #define _VIDEOBUF_DMA_CONTIG_H | |
15 | ||
16 | #include <linux/dma-mapping.h> | |
17 | #include <media/videobuf-core.h> | |
18 | ||
19 | void videobuf_queue_dma_contig_init(struct videobuf_queue *q, | |
20 | const struct videobuf_queue_ops *ops, | |
21 | struct device *dev, | |
22 | spinlock_t *irqlock, | |
23 | enum v4l2_buf_type type, | |
24 | enum v4l2_field field, | |
25 | unsigned int msize, | |
26 | void *priv, | |
27 | struct mutex *ext_lock); | |
28 | ||
29 | dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf); | |
30 | void videobuf_dma_contig_free(struct videobuf_queue *q, | |
31 | struct videobuf_buffer *buf); | |
32 | ||
33 | #endif /* _VIDEOBUF_DMA_CONTIG_H */ |