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diff --git a/firmware/target/hosted/sonynwz/nvp-nwz.h b/firmware/target/hosted/sonynwz/nvp-nwz.h
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@@ -0,0 +1,41 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2016 by Amaury Pouly
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef __NVP_NWZ_H__
+#define __NVP_NWZ_H__
+
+#include "system.h"
+#include "nwz-db.h"
+
+/* get model ID */
+unsigned long nwz_get_model_id(void);
+/* get model NAME (ie NWZ-E463) */
+const char *nwz_get_model_name(void);
+/* return series (index into nwz_db) */
+int nwz_get_series(void);
+
+/* read a nvp node and return its size, if the data pointer is null, then simply
+ * return the size, return -1 on error */
+int nwz_nvp_read(enum nwz_nvp_node_t node, void *data);
+/* write a nvp node, return 0 on success and -1 on error, the size of the buffer
+ * must be the one returned by nwz_nvp_read */
+int nwz_nvp_write(enum nwz_nvp_node_t node, void *data);
+
+#endif /* __NVP_NWZ_H__ */