video: adf: add memblock helper

Provides a dma-buf exporter for memblocks, mainly useful for ADF devices
to wrap their bootloader logos

Change-Id: I936a9b5df099ab6084d433fcaf50f3bc29f93289
Signed-off-by: Greg Hackmann <ghackmann@google.com>
diff --git a/include/video/adf_memblock.h b/include/video/adf_memblock.h
new file mode 100644
index 0000000..6256e0e
--- /dev/null
+++ b/include/video/adf_memblock.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2013 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _VIDEO_ADF_MEMBLOCK_H_
+#define _VIDEO_ADF_MEMBLOCK_H_
+
+struct dma_buf *adf_memblock_export(phys_addr_t base, size_t size, int flags);
+
+#endif /* _VIDEO_ADF_MEMBLOCK_H_ */