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diff --git a/backends/platform/psp/powerman.h b/backends/platform/psp/powerman.h
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+++ b/backends/platform/psp/powerman.h
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#ifndef POWERMAN_H
+#define POWERMAN_H
+ 
+#include <SDL/SDL_thread.h>
+#include <SDL/SDL_mutex.h>
+#include "common/singleton.h"
+#include "common/list.h"
+ 
+ /*
+  *  Implement this class (interface) if you want to use PowerManager's suspend callback functionality
+  *
+  */
+ class Suspendable {
+ public:
+	virtual ~Suspendable() {}
+	virtual int suspend() = 0;
+	virtual int resume() = 0;
+ };
+ 
+ /****************************************************************************************************** 
+ *
+ *  This class will call a Suspendable when the PSP goes to suspend/resumes. It also provides the ability to block
+ *  a thread when the PSP is going to suspend/suspending, and to wake it up when the PSP is resumed. 
+ *	This ability is very useful for managing the PSPIoStream class, but may be found useful by other classes as well.
+ *
+ *******************************************************************************************************/
+ class PowerManager: public Common::Singleton<PowerManager> {
+private:
+	friend class Common::Singleton<PowerManager>;
+	PowerManager();
+	~PowerManager();
+
+	Common::List<Suspendable *> _suspendList;		/* list to register in */
+
+	bool _suspendFlag;								/* protected variable */
+	SDL_mutex *_flagMutex;							/* mutex to access access flag */
+	SDL_mutex *_listMutex;							/* mutex to access Suspendable list */
+	SDL_cond *_condSuspendable;						/* signal to synchronize accessing threads */
+	SDL_cond *_condPM;								/* signal to wake up the PM from a critical section */
+	int _criticalCounter;							/* Counter of how many threads are in a critical section */
+
+public:
+	int blockOnSuspend();								/* block if suspending */
+	int beginCriticalSection(bool justBlock = false);	/* Use a critical section to block (if suspend was already pressed) */
+	int endCriticalSection();							/* and to prevent the PSP from suspending in a particular section */
+	int registerSuspend(Suspendable *item);			/* register to be called to suspend/resume */
+	int unregisterSuspend(Suspendable *item);		/* remove from suspend/resume list */
+	int suspend();									/* callback to have all items in list suspend */
+	int resume();									/* callback to have all items in list resume */
+	
+	enum {
+		Error = -1,
+		NotBlocked = 0,
+		Blocked = 1		
+	};
+		
+ };
+ 
+ // For easy access
+#define PowerMan	PowerManager::instance()
+
+ #endif /* POWERMAN_H */