1 /*

     2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef __LINKSTATENOTIFIER_H__

    19 #define __LINKSTATENOTIFIER_H__

    20 

    21 #include <e32base.h> 

    22 

    23 class RDevUsbcClient;

    24 

    25 

    26 const TInt KMaxPacketTypeBulkFS = 64;

    27 const TInt KMaxPacketTypeBulkHS = 512;

    28 

    29 const TInt KDefaultMaxPacketTypeBulk = KMaxPacketTypeBulkFS;

    30 

    31 

    32 class MLinkStateObserver

    33 /**

    34  * Interface for notifications of link state events.

    35  */

    36 	{

    37 public:

    38 	virtual void MLSOStateChange(TInt aPacketSize) = 0;

    39 	};

    40 

    41 NONSHARABLE_CLASS(CLinkStateNotifier) : public CActive

    42 /**

    43  * Active object to request link state notifications.

    44  */

    45 	{

    46 public:

    47 	static CLinkStateNotifier* NewL(MLinkStateObserver& aParent, 

    48 		RDevUsbcClient& aUsb);

    49 	~CLinkStateNotifier();

    50 	

    51 	void Start();

    52 

    53 private: // from CActive

    54 	virtual void DoCancel();

    55 	virtual void RunL();

    56 	virtual TInt RunError(TInt aError);

    57 

    58 private:

    59 	CLinkStateNotifier(MLinkStateObserver& aParent, RDevUsbcClient& aUsb);

    60 

    61 private:

    62 	void LinkUp();

    63 	void LinkDown();

    64 

    65 private: // unowned

    66 	MLinkStateObserver& iParent; ///< Observer

    67 	RDevUsbcClient& iUsb;		///< The Ldd to use

    68 

    69 private: // owned

    70 	TUint iUsbState;		///< Bitmask representing the endpoints

    71 	TInt iPacketSize;

    72 	};

    73 

    74 #endif // __LINKSTATENOTIFIER_H__