1 files changed, 32 insertions, 0 deletions

diff --git a/include/media/videobuf-dma-contig.h b/include/media/videobuf-dma-contig.h
new file mode 100644
index 000000000000..549386681aab
--- /dev/null
+++ b/include/media/videobuf-dma-contig.h
@@ -0,0 +1,32 @@
+/*
+ * helper functions for physically contiguous capture buffers
+ *
+ * The functions support hardware lacking scatter gather support
+ * (i.e. the buffers must be linear in physical memory)
+ *
+ * Copyright (c) 2008 Magnus Damm
+ *
+ * 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; either version 2
+ */
+#ifndef _VIDEOBUF_DMA_CONTIG_H
+#define _VIDEOBUF_DMA_CONTIG_H
+
+#include <linux/dma-mapping.h>
+#include <media/videobuf-core.h>
+
+void videobuf_queue_dma_contig_init(struct videobuf_queue *q,
+                                    struct videobuf_queue_ops *ops,
+                                    struct device *dev,
+                                    spinlock_t *irqlock,
+                                    enum v4l2_buf_type type,
+                                    enum v4l2_field field,
+                                    unsigned int msize,
+                                    void *priv);
+
+dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf);
+void videobuf_dma_contig_free(struct videobuf_queue *q,
+                              struct videobuf_buffer *buf);
+
+#endif /* _VIDEOBUF_DMA_CONTIG_H */