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0c3a14c177
Require that dma-sg also uses an allocation context. This is in preparation for adding prepare/finish memops to sync the memory between DMA and CPU. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Pawel Osciak <pawel@osciak.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
30 lines
790 B
C
30 lines
790 B
C
/*
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* videobuf2-dma-sg.h - DMA scatter/gather memory allocator for videobuf2
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*
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* Copyright (C) 2010 Samsung Electronics
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*
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* Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation.
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*/
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#ifndef _MEDIA_VIDEOBUF2_DMA_SG_H
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#define _MEDIA_VIDEOBUF2_DMA_SG_H
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#include <media/videobuf2-core.h>
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static inline struct sg_table *vb2_dma_sg_plane_desc(
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struct vb2_buffer *vb, unsigned int plane_no)
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{
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return (struct sg_table *)vb2_plane_cookie(vb, plane_no);
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}
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void *vb2_dma_sg_init_ctx(struct device *dev);
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void vb2_dma_sg_cleanup_ctx(void *alloc_ctx);
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extern const struct vb2_mem_ops vb2_dma_sg_memops;
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#endif
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