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| author |   Pawel Osciak <p.osciak@samsung.com> | 2010-10-11 10:59:36 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-21 20:31:34 -0300 |
| commit | 1a758d4e847f7743ac1b5aa79fde3ba2d8b5132b (patch) | |
| tree | b5f37565157d7dd16af460b00b19cafa1b01c966 /include/media/videobuf2-dma-contig.h | |
| parent | [media] v4l: videobuf2: add vmalloc allocator (diff) | |
| download | wireguard-linux-1a758d4e847f7743ac1b5aa79fde3ba2d8b5132b.tar.xz wireguard-linux-1a758d4e847f7743ac1b5aa79fde3ba2d8b5132b.zip | |
[media] v4l: videobuf2: add DMA coherent allocator
Add an implementation of DMA coherent memory allocator and handling
routines for videobuf2, implemented on top of dma_alloc_coherent() call.
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: Pawel Osciak <pawel@osciak.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media/videobuf2-dma-contig.h')
| -rw-r--r-- | include/media/videobuf2-dma-contig.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/media/videobuf2-dma-contig.h b/include/media/videobuf2-dma-contig.h new file mode 100644 index 000000000000..fb7ca849d993 --- /dev/null +++ b/include/media/videobuf2-dma-contig.h @@ -0,0 +1,29 @@ +/* + * videobuf2-dma-coherent.h - DMA coherent memory allocator for videobuf2 + * + * Copyright (C) 2010 Samsung Electronics + * + * Author: Pawel Osciak <p.osciak@samsung.com> + * + * 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. + */ + +#ifndef _MEDIA_VIDEOBUF2_DMA_COHERENT_H +#define _MEDIA_VIDEOBUF2_DMA_COHERENT_H + +#include <media/videobuf2-core.h> + +static inline unsigned long vb2_dma_contig_plane_paddr( + struct vb2_buffer *vb, unsigned int plane_no) +{ + return (unsigned long)vb2_plane_cookie(vb, plane_no); +} + +void *vb2_dma_contig_init_ctx(struct device *dev); +void vb2_dma_contig_cleanup_ctx(void *alloc_ctx); + +extern const struct vb2_mem_ops vb2_dma_contig_memops; + +#endif |