linux/include/media/videobuf2-dma-contig.h
Pawel Osciak 1a758d4e84 [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>
2011-03-21 20:31:34 -03:00

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/*
* 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