diff -r 000000000000 -r c6b0df440bee dbgagents/trkagent/engine/TrkUsbPortListener.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dbgagents/trkagent/engine/TrkUsbPortListener.cpp	Tue Mar 02 10:33:16 2010 +0530
@@ -0,0 +1,151 @@
+/*
+* Copyright (c) 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: 
+*
+*/
+
+// INCLUDE FILES
+#include <e32std.h>                      
+
+#include "TrkUsbPortListener.h" 
+                   
+// LOCAL FUNCTION PROTOTYPES
+
+// LOCAL CONSTANTS
+
+const TUint KTrkUsbDeviceStateMask				= 0x00ff;
+
+#if(defined __SERIES60_30__ || defined __SERIES60_31__ || defined __S60_32__)
+#define KPersonalityPCSuite               113
+#else
+#define KPersonalityPCSuite               5
+#endif
+
+
+
+
+//
+// CTrkUsbPortListener::CTrkUsbPortListener
+// Constructor
+//
+CTrkUsbPortListener::CTrkUsbPortListener (MTrkUsbConnectionListener *aConnectionListener) 
+		  	  :CTrkCommPortListener(aConnectionListener, CActive::EPriorityStandard)
+{
+	iConnected = EFalse;
+	iPersonalityId = 0;
+
+	iUsbDeviceState = EUsbDeviceStateUndefined;
+    
+    TInt err = iUsbServer.Connect();
+
+    err = iUsbServer.GetDeviceState( iUsbDeviceState );
+    if (!err)
+    	err = iUsbServer.GetCurrentPersonalityId( iPersonalityId );
+    
+    if (!err && iUsbDeviceState == EUsbDeviceStateConfigured
+    		 && iPersonalityId == KPersonalityPCSuite)
+    		 iConnected = ETrue;
+
+    CActiveScheduler::Add( this ); 
+}
+
+//
+// CTrkUsbPortListener::~CTrkUsbPortListener
+// Destructor
+//
+CTrkUsbPortListener::~CTrkUsbPortListener()
+{
+    Cancel();   // Ensure that any outstanding requests are cancelled
+    Deque();
+    iUsbServer.Close();
+}
+
+//
+// CTrkUsbPortListener::ListenL
+// Starts listening for usb connection status notifications..
+//
+void CTrkUsbPortListener::ListenL()
+{		
+	IssueRequestL();		
+}
+
+//
+// CTrkUsbPortListener::IssueRequestL
+//
+void CTrkUsbPortListener::IssueRequestL()
+{		
+	if (IsActive()) //already listening, just return...
+		return;
+		
+	if ( iUsbDeviceState == EUsbDeviceStateUndefined )
+	{
+		User::LeaveIfError( iUsbServer.GetDeviceState( iUsbDeviceState ) );
+		
+	}
+	
+	iUsbServer.DeviceStateNotification(KTrkUsbDeviceStateMask, iUsbDeviceState, iStatus);
+	SetActive();	
+}
+
+//
+// CTrkUsbPortListener::StopListening
+// Cancel any pending requests for connection status notifications.
+//
+void CTrkUsbPortListener::StopListening()
+{
+	Cancel();	
+}
+
+//
+// CTrkUsbPortListener::DoCancel
+// This method gets called from CActive::Cancel();
+//
+void CTrkUsbPortListener::DoCancel()
+{
+	iUsbServer.DeviceStateNotificationCancel();	
+	iUsbDeviceState = EUsbDeviceStateUndefined;
+}
+
+//
+// CTrkUsbPortListener::RunL
+// This method gets called whenever there is a change in the connection status.
+// Right now we are interested only when the cable is disconnected. 
+// For all the other notifications, just reissues the request.
+//
+void CTrkUsbPortListener::RunL()
+{
+	User::LeaveIfError( iStatus.Int() );
+
+	iUsbServer.GetCurrentPersonalityId( iPersonalityId );
+	
+  	if ( iUsbDeviceState == EUsbDeviceStateUndefined ||
+         (iUsbDeviceState == EUsbDeviceStateConfigured && iPersonalityId != KPersonalityPCSuite) ) 
+	{
+		iConnectionListener->ConnectionUnAvailable();
+		iConnected = EFalse;
+	}
+	// There is something wrong USB cable status notifications
+	// When the cable is disconnected, first you get a notification 
+	// with the device state as configured.
+	// So we need to work around using a local status flag
+	else if ( iUsbDeviceState == EUsbDeviceStateConfigured &&
+			  iPersonalityId == KPersonalityPCSuite  && 
+			  !iConnected) 
+	{
+		iConnected = ETrue;
+		iConnectionListener->ConnectionAvailable();;
+	}		
+		IssueRequestL();
+}
+