linux/include/media/videobuf2-dma-contig.h
Pawel Osciak 472af2b05b [media] videobuf2-dma-contig: make cookie() return a pointer to dma_addr_t
dma_addr_t may not fit into void* on some architectures. To be safe, make
vb2_dma_contig_cookie() return a pointer to dma_addr_t and dereference it
in vb2_dma_contig_plane_paddr() back to dma_addr_t.

Signed-off-by: Pawel Osciak <pawel@osciak.com>
Reported-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22 19:41:58 -03:00

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/*
* videobuf2-dma-coherent.h - DMA coherent memory allocator for videobuf2
*
* Copyright (C) 2010 Samsung Electronics
*
* Author: Pawel Osciak <pawel@osciak.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>
#include <linux/dma-mapping.h>
static inline dma_addr_t
vb2_dma_contig_plane_paddr(struct vb2_buffer *vb, unsigned int plane_no)
{
dma_addr_t *paddr = vb2_plane_cookie(vb, plane_no);
return *paddr;
}
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