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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /include/media/videobuf-dma-contig.h | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | include/media/videobuf-dma-contig.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/media/videobuf-dma-contig.h b/include/media/videobuf-dma-contig.h new file mode 100644 index 000000000..f0ed82543 --- /dev/null +++ b/include/media/videobuf-dma-contig.h @@ -0,0 +1,33 @@ +/* + * helper functions for physically contiguous capture buffers + * + * The functions support hardware lacking scatter gather support + * (i.e. the buffers must be linear in physical memory) + * + * Copyright (c) 2008 Magnus Damm + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 + */ +#ifndef _VIDEOBUF_DMA_CONTIG_H +#define _VIDEOBUF_DMA_CONTIG_H + +#include <linux/dma-mapping.h> +#include <media/videobuf-core.h> + +void videobuf_queue_dma_contig_init(struct videobuf_queue *q, + const struct videobuf_queue_ops *ops, + struct device *dev, + spinlock_t *irqlock, + enum v4l2_buf_type type, + enum v4l2_field field, + unsigned int msize, + void *priv, + struct mutex *ext_lock); + +dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf); +void videobuf_dma_contig_free(struct videobuf_queue *q, + struct videobuf_buffer *buf); + +#endif /* _VIDEOBUF_DMA_CONTIG_H */ |