usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/src/linkstatenotifier.cpp
/*
* Copyright (c) 2006-2009 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 <e32base.h>
#include <d32usbc.h>
#include <usb/usblogger.h>
#include "AcmPanic.h"
#include "linkstatenotifier.h"
#ifdef __FLOG_ACTIVE
_LIT8(KLogComponent, "ECACM");
#endif
CLinkStateNotifier* CLinkStateNotifier::NewL(MLinkStateObserver& aParent, RDevUsbcClient& aUsb)
{
LOG_STATIC_FUNC_ENTRY
CLinkStateNotifier* self = new (ELeave) CLinkStateNotifier(aParent, aUsb);
return self;
}
CLinkStateNotifier::CLinkStateNotifier(MLinkStateObserver& aParent, RDevUsbcClient& aUsb)
: CActive(EPriorityStandard),
iParent(aParent), iUsb(aUsb)
{
LOG_FUNC
CActiveScheduler::Add(this);
}
/**
CObexUsbHandler destructor.
*/
CLinkStateNotifier::~CLinkStateNotifier()
{
LOG_FUNC
Cancel();
}
/**
Standard active object error function.
@return KErrNone because currently nothing should cause this to be called.
*/
TInt CLinkStateNotifier::RunError(TInt /*aError*/)
{
return KErrNone;
}
/**
This function will be called upon a change in the state of the device
(as set up in AcceptL).
*/
void CLinkStateNotifier::RunL()
{
LOGTEXT2(_L8("CObexUsbHandler::RunL called state=0x%X"), iUsbState);
if (iStatus != KErrNone)
{
LOGTEXT2(_L8("CObexUsbHandler::RunL() - Error = %d"),iStatus.Int());
LinkDown();
iParent.MLSOStateChange(KDefaultMaxPacketTypeBulk);
return;
}
if (!(iUsbState & KUsbAlternateSetting))
{
TUsbcDeviceState deviceState = static_cast<TUsbcDeviceState>(iUsbState);
switch(deviceState)
{
case EUsbcDeviceStateUndefined:
LinkDown();
break;
case EUsbcDeviceStateAttached:
case EUsbcDeviceStatePowered:
case EUsbcDeviceStateDefault:
case EUsbcDeviceStateAddress:
case EUsbcDeviceStateSuspended:
break;
case EUsbcDeviceStateConfigured:
LinkUp();
break;
default:
__ASSERT_DEBUG(false, _USB_PANIC(KAcmPanicCat, EPanicUnknownDeviceState));
break;
}
}
iParent.MLSOStateChange(iPacketSize || KDefaultMaxPacketTypeBulk);
// Await further notification of a state change.
iUsb.AlternateDeviceStatusNotify(iStatus, iUsbState);
SetActive();
}
/**
Standard active object cancellation function.
*/
void CLinkStateNotifier::DoCancel()
{
LOG_FUNC
iUsb.AlternateDeviceStatusNotifyCancel();
}
/**
Accept an incoming connection.
*/
void CLinkStateNotifier::Start()
{
LOG_FUNC
iUsb.AlternateDeviceStatusNotify(iStatus, iUsbState);
SetActive();
}
void CLinkStateNotifier::LinkUp()
{
if (iUsb.CurrentlyUsingHighSpeed())
{
iPacketSize = KMaxPacketTypeBulkHS;
}
else
{
iPacketSize = KMaxPacketTypeBulkFS;
}
}
void CLinkStateNotifier::LinkDown()
{
iPacketSize = 0;
}