diff options
| author | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
|---|---|---|
| committer | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
| commit | 8e4bff4cab0ddac6060645b0715210484d02ff40 (patch) | |
| tree | 3a5c3024371a04692a3a6d9974d001cdff8ebf84 /include/media/videobuf-dma-contig.h | |
Diffstat (limited to 'include/media/videobuf-dma-contig.h')
| -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 00000000..f0ed8254 --- /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 */ |