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/*
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Implementation
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*
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*/
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#include <usbotgdefs.h>
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#include "cusbvbusobserver.h"
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#include "definitions.h"
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#include "debug.h"
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#include "panic.h"
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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CUsbVBusObserver::CUsbVBusObserver() :
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CActive(EPriorityStandard)
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{
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CActiveScheduler::Add(this);
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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void CUsbVBusObserver::ConstructL()
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{
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LOG_FUNC
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LEAVEIFERROR(iVBus.Attach(KUidUsbManCategory,
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KUsbOtgVBusPoweredProperty));
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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CUsbVBusObserver* CUsbVBusObserver::NewL()
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{
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LOG_FUNC
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CUsbVBusObserver* self = new (ELeave) CUsbVBusObserver();
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CleanupStack::PushL(self);
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self->ConstructL();
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CleanupStack::Pop(self);
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return self;
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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CUsbVBusObserver::~CUsbVBusObserver()
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{
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LOG_FUNC
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Cancel();
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iVBus.Close();
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iObservers.Close();
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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CUsbVBusObserver::TState CUsbVBusObserver::VBus() /* not const, because for some reason RProperty::Get is not const */
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{
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TInt val(0);
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TInt err = iVBus.Get(val);
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if (KErrNone != err)
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{
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LOG("CanNotGetVBusProperty" )
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PANIC( ECanNotGetVBusProperty);
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}
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return (0 == val ? EVBusDown : EVBusUp);
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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void CUsbVBusObserver::SubscribeL(MUsbVBusObserver& aObserver)
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{
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LOG_FUNC
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// check if the same observer already exist in a list
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if (KErrNotFound != iObservers.Find(&aObserver))
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{
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LOG( "Observer already exists" );
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PANIC( EObserverAlreadyExists);
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return;
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}
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iObservers.AppendL(&aObserver);
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if (KFirst == iObservers.Count()) // first item
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{
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iVBus.Subscribe(iStatus);
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SetActive();
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}
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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void CUsbVBusObserver::UnsubscribeL(MUsbVBusObserver& aObserver)
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{
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LOG_FUNC
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TInt i(iObservers.Find(&aObserver));
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if (KErrNotFound == i)
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{
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LOG("Observer not found" );
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PANIC( ECanNotFindVBusObserver);
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return;
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}
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iObservers.Remove(i);
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if (0 == iObservers.Count()) // no observers anymore
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{
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// cancel pending request, if any
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Cancel();
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}
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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void CUsbVBusObserver::RunL()
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{
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LOG_FUNC
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LOG1( "iStatus = %d" , iStatus.Int());
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// if error occured, tell to Observers
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if (KErrNone != iStatus.Int())
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{
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for (TInt i(0); i < iObservers.Count(); ++i)
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{
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iObservers[i]->VBusObserverErrorL(iStatus.Int());
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}
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return;
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}
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// re-issue request first
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iVBus.Subscribe(iStatus);
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SetActive();
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// then process property change
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TState state(VBus());
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// report change
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switch (state)
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{
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case EVBusUp:
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{
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LOG("VBus UP");
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for (TInt i(0); i < iObservers.Count(); ++i)
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{
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iObservers[i]->VBusUpL();
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}
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break;
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}
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;
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case EVBusDown:
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{
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LOG("VBus DOWN");
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for (TInt i(0); i < iObservers.Count(); ++i)
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{
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iObservers[i]->VBusDownL();
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}
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break;
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}
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;
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default:
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{
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LOG("WrongVBusState");
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PANIC( EWrongVBusState);
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}
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}
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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void CUsbVBusObserver::DoCancel()
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{
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iVBus.Cancel();
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}
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// ---------------------------------------------------------------------------
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//
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// ---------------------------------------------------------------------------
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//
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TInt CUsbVBusObserver::RunError(TInt aError)
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{
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LOG_FUNC
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LOG1( "aError = %d" , aError);
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// try to continue
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return KErrNone;
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}
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