diff -r 000000000000 -r c9bc50fca66e usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/inc/CdcControlInterfaceReader.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/inc/CdcControlInterfaceReader.h	Tue Feb 02 02:02:59 2010 +0200
@@ -0,0 +1,94 @@
+/*
+* Copyright (c) 1997-2009 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 __CDCCONTROLINTERFACEREADER_H__
+#define __CDCCONTROLINTERFACEREADER_H__
+
+#include <e32base.h>
+#include "RequestHeader.h"
+#include "acmcapability.h"
+
+class MCdcCommsClassRequestHandler;
+class RDevUsbcClient;
+
+NONSHARABLE_CLASS(CCdcControlInterfaceReader) : public CActive
+/**
+ * Deals with reading control information from the LDD.
+ */
+	{
+public:
+	static CCdcControlInterfaceReader* NewL(
+		MCdcCommsClassRequestHandler& aParent, 
+		RDevUsbcClient& aLdd);
+	~CCdcControlInterfaceReader();
+
+private:
+	CCdcControlInterfaceReader(MCdcCommsClassRequestHandler& aParent, 
+		RDevUsbcClient& aLdd);
+
+private: // utility
+	void HandleReadCompletion(TInt aError);
+	
+	void DecodeMessageHeader();
+	void DecodeMessageDataWithResponseRequired();
+	void DecodeMessageData();
+
+	void ReadMessageHeader();
+	void ReadMessageData(TUint aLength);
+
+private: // from CActive
+	void RunL();
+	void DoCancel();
+
+private: // unowned
+	MCdcCommsClassRequestHandler& iParent;
+	RDevUsbcClient& iLdd;			
+
+private: // owned
+	TBuf8<KUsbRequestHdrSize> iMessageHeader; ///< Raw message header
+
+	enum
+		{
+		KAcmControlReadBufferLength = 256, ///< Size of the ACM control read 
+		///< buffer
+
+		// Request IDs- see p16 of UBSCDC1.1 Table 4.
+		KGetEncapsulated = 0x01, ///< GET_ENCAPSULATED_RESPONSE
+		KGetCommFeature  = 0x03, ///< GET_COMM_FEATURE
+		KGetLineCoding	 = 0x21, ///< GET_LINE_CODING
+
+		KSendEncapsulated	 = 0x00, ///< SEND_ENCAPSULATED_COMMAND
+		KSetCommFeature 	 = 0x02, ///< SET_COMM_FEATURE
+		KClearCommFeature	 = 0x04, ///< CLEAR_COMM_FEATURE
+		KSetLineCoding		 = 0x20, ///< SET_LINE_CODING
+		KSetControlLineState = 0x22, ///< SET_CONTROL_LINE_STATE
+		KSendBreak			 = 0x23, ///< SEND_BREAK
+		};
+
+	enum TReaderState
+		{
+		EWaitingForHeader = 0,	///< Waiting for message header
+		EWaitingForData = 1,	///< Waiting for message data
+		};
+
+	TBuf8<KAcmControlReadBufferLength> iMessageData;	///< Message data
+	///< Decoded message header
+	TUsbRequestHdr iRequestHeader;						
+	TReaderState iState;								///< Reader state
+	};
+
+#endif // __CDCCONTROLINTERFACEREADER_H__