diff -r 000000000000 -r c9bc50fca66e usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/inc/linkstatenotifier.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/inc/linkstatenotifier.h	Tue Feb 02 02:02:59 2010 +0200
@@ -0,0 +1,74 @@
+/*
+* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#ifndef __LINKSTATENOTIFIER_H__
+#define __LINKSTATENOTIFIER_H__
+
+#include <e32base.h> 
+
+class RDevUsbcClient;
+
+
+const TInt KMaxPacketTypeBulkFS = 64;
+const TInt KMaxPacketTypeBulkHS = 512;
+
+const TInt KDefaultMaxPacketTypeBulk = KMaxPacketTypeBulkFS;
+
+
+class MLinkStateObserver
+/**
+ * Interface for notifications of link state events.
+ */
+	{
+public:
+	virtual void MLSOStateChange(TInt aPacketSize) = 0;
+	};
+
+NONSHARABLE_CLASS(CLinkStateNotifier) : public CActive
+/**
+ * Active object to request link state notifications.
+ */
+	{
+public:
+	static CLinkStateNotifier* NewL(MLinkStateObserver& aParent, 
+		RDevUsbcClient& aUsb);
+	~CLinkStateNotifier();
+	
+	void Start();
+
+private: // from CActive
+	virtual void DoCancel();
+	virtual void RunL();
+	virtual TInt RunError(TInt aError);
+
+private:
+	CLinkStateNotifier(MLinkStateObserver& aParent, RDevUsbcClient& aUsb);
+
+private:
+	void LinkUp();
+	void LinkDown();
+
+private: // unowned
+	MLinkStateObserver& iParent; ///< Observer
+	RDevUsbcClient& iUsb;		///< The Ldd to use
+
+private: // owned
+	TUint iUsbState;		///< Bitmask representing the endpoints
+	TInt iPacketSize;
+	};
+
+#endif // __LINKSTATENOTIFIER_H__