--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/usbengines/usbotgwatcher/src/cusbvbusobserver.cpp Thu Dec 17 09:14:30 2009 +0200
@@ -0,0 +1,246 @@
+/*
+* Copyright (c) 2008-2009 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: Implementation
+ *
+*/
+
+
+#include <usbotgdefs.h>
+
+#include "cusbvbusobserver.h"
+
+#include "definitions.h"
+#include "debug.h"
+#include "panic.h"
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CUsbVBusObserver::CUsbVBusObserver() :
+ CActive(EPriorityStandard)
+ {
+ CActiveScheduler::Add(this);
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbVBusObserver::ConstructL()
+ {
+
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::ConstructL" ) );
+
+ User::LeaveIfError(iVBus.Attach(KUidUsbManCategory,
+ KUsbOtgVBusPoweredProperty));
+
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CUsbVBusObserver* CUsbVBusObserver::NewL()
+ {
+
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::NewL" ) );
+
+ CUsbVBusObserver* self = new (ELeave) CUsbVBusObserver();
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CUsbVBusObserver::~CUsbVBusObserver()
+ {
+
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::~CUsbVBusObserver" ) );
+
+ Cancel();
+
+ iVBus.Close();
+
+ iObservers.Close();
+
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CUsbVBusObserver::TState CUsbVBusObserver::VBus() /* not const, because for some reason RProperty::Get is not const! */
+ {
+
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::VBus" ) );
+
+ TInt val(0);
+
+ TInt err = iVBus.Get(val);
+
+ if (KErrNone != err)
+ {
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::VBus CanNotGetVBusProperty" ) );
+ Panic(ECanNotGetVBusProperty);
+ }
+
+ FTRACE( FPrint(_L( "[USBOTGWATCHER]\tCUsbVBusObserver::VBus = %d" ), val ));
+
+ // not found in docs clear definition of this property. Verification is needed
+ return (0 == val ? EVBusDown : EVBusUp);
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbVBusObserver::SubscribeL(MUsbVBusObserver* aObserver)
+ {
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::SubscribeL" ) );
+
+ User::LeaveIfError(iObservers.Append(aObserver));
+
+ if (KFirst == iObservers.Count()) // first item
+ {
+ iVBus.Subscribe(iStatus);
+ SetActive();
+ }
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbVBusObserver::UnsubscribeL(MUsbVBusObserver* aObserver)
+ {
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::UnsubscribeL" ) );
+
+ if (0 == iObservers.Count()) // no items
+ {
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::UnsubscribeL No observers" ) );
+ return;
+ }
+
+ TInt i(0);
+ while (i < iObservers.Count() && aObserver != iObservers[i])
+ {
+ ++i;
+ FTRACE( FPrint(_L( "[USBOTGWATCHER]\tCUsbVBusObserver::UnsubscribeL i = %d" ), i ));
+ }
+
+ if (aObserver == iObservers[i]) // found
+ {
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::UnsubscribeL Removing item" ) );
+ iObservers.Remove(i);
+ }
+ else
+ {
+ FLOG( _L( "[USBOTGWATCHER]\tCUsbVBusObserver::UnsubscribeL CanNotFindVBusObserver" ) );
+ Panic(ECanNotFindVBusObserver);
+ }
+
+ if (0 == iObservers.Count()) // no observers anymore
+ {
+ // cancel pending request, if any
+ Cancel();
+ return;
+ }
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbVBusObserver::RunL()
+ {
+ FTRACE( FPrint(_L( "[USBOTGWATCHER]\tCUsbVBusObserver::RunL iStatus = %d" ), iStatus.Int()));
+
+ // if error occured, tell to Observers
+ if(KErrNone != iStatus.Int())
+ {
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->VBusObserverErrorL(iStatus.Int());
+ }
+ return;
+ }
+
+ // re-issue request first
+ iVBus.Subscribe(iStatus);
+ SetActive();
+
+ // then process property change
+ TState state(VBus());
+
+ // report change
+ switch (state)
+ {
+ case EVBusUp:
+ {
+ FLOG(_L( "[USBOTGWATCHER]\tCUsbVBusObserver::RunL VBus UP"));
+
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->VBusUpL();
+ }
+ break;
+ }
+ ;
+
+ case EVBusDown:
+ {
+ FLOG(_L( "[USBOTGWATCHER]\tCUsbVBusObserver::RunL VBus DOWN"));
+
+ for (TInt i(0); i < iObservers.Count(); ++i)
+ {
+ iObservers[i]->VBusDownL();
+ }
+ break;
+ }
+ ;
+
+ default:
+ {
+ Panic(EWrongVBusState);
+ }
+ }
+
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CUsbVBusObserver::DoCancel()
+ {
+ iVBus.Cancel();
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TInt CUsbVBusObserver::RunError(TInt aError)
+ {
+
+ FTRACE( FPrint(_L( "[USBOTGWATCHER]\tCUsbVBusObserver::RunError aError = %d" ), aError));
+
+ // try to continue
+ return KErrNone;
+ }