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authorPawel Osciak <p.osciak@samsung.com>2010-10-11 10:59:36 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-03-21 20:31:34 -0300
commit1a758d4e847f7743ac1b5aa79fde3ba2d8b5132b (patch)
treeb5f37565157d7dd16af460b00b19cafa1b01c966 /include/media/videobuf2-dma-contig.h
parent3c18ff06d811f743d380e6436fac0143ffcf1266 (diff)
downloadlinux-1a758d4e847f7743ac1b5aa79fde3ba2d8b5132b.tar.bz2
[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.h29
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
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+++ b/include/media/videobuf2-dma-contig.h
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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