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77512baa | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2cc45cf2 MD |
2 | /* |
3 | * helper functions for physically contiguous capture buffers | |
4 | * | |
5 | * The functions support hardware lacking scatter gather support | |
6 | * (i.e. the buffers must be linear in physical memory) | |
7 | * | |
8 | * Copyright (c) 2008 Magnus Damm | |
2cc45cf2 MD |
9 | */ |
10 | #ifndef _VIDEOBUF_DMA_CONTIG_H | |
11 | #define _VIDEOBUF_DMA_CONTIG_H | |
12 | ||
13 | #include <linux/dma-mapping.h> | |
14 | #include <media/videobuf-core.h> | |
15 | ||
16 | void videobuf_queue_dma_contig_init(struct videobuf_queue *q, | |
38a54f35 | 17 | const struct videobuf_queue_ops *ops, |
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18 | struct device *dev, |
19 | spinlock_t *irqlock, | |
20 | enum v4l2_buf_type type, | |
21 | enum v4l2_field field, | |
22 | unsigned int msize, | |
08bff03e HV |
23 | void *priv, |
24 | struct mutex *ext_lock); | |
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25 | |
26 | dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf); | |
27 | void videobuf_dma_contig_free(struct videobuf_queue *q, | |
28 | struct videobuf_buffer *buf); | |
29 | ||
30 | #endif /* _VIDEOBUF_DMA_CONTIG_H */ |