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diff --git a/include/linux/platform_data/hi3620-dsi.h b/include/linux/platform_data/hi3620-dsi.h
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+++ b/include/linux/platform_data/hi3620-dsi.h
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+/*
+ * Hisilicon Hi3620 MIPI DSI head file
+ *
+ * Copyright (c) 2013 Hisilicon Limited.
+ * Copyright (c) 2013 Linaro Limited.
+ *
+ * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
+ *
+ * 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 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef __HI3620_DSI_H
+#define __HI3620_DSI_H
+
+int hi3620_dsi_phy_write(void __iomem *reg_base, unsigned char addr,
+ unsigned char data);
+unsigned char hi3620_dsi_phy_read(void __iomem *reg_base, unsigned char addr);
+
+#endif