--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/drivers/iic/iic_transaction.cpp Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,53 @@
+// 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 the License "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:
+// e32\drivers\iic_transaction.cpp
+// IIC Transaction API Implementation
+//
+
+#include <drivers/iic_transaction.h>
+#include <drivers/iic_channel.h>
+
+EXPORT_C void TIicBusSlaveCallback::DfcFunc(TAny* aPtr)
+ {
+ TIicBusSlaveCallback* pCb = (TIicBusSlaveCallback*) aPtr;
+ // pCb can be NULL if a client corrupt it after the dfc has been queued
+ __ASSERT_DEBUG(pCb != NULL, Kern::Fault(KIicPanic,__LINE__));
+ DIicBusChannelSlave* chan = pCb->iChannel;
+ __ASSERT_DEBUG(chan != NULL, Kern::Fault(KIicPanic,__LINE__));
+
+ chan->ProcessData(pCb->iTrigger, pCb); // Call PSL to fill in iReturn, iRxWords and/or iTxWords
+ //
+ // Only invoke the client's callback (and update the state machine) if asynchronous channel capture has
+ // completed, or if one of the requested triggers has occurred or if a bus error has been witnessed
+ TInt8 callbackTrig = 0;
+ TInt callbackRet = 0;
+ TInt nextSteps = chan->UpdateReqTrig(callbackTrig, callbackRet);
+ if(nextSteps & DIicBusChannelSlave::EStopTimer)
+ {
+ chan->StopTimer();
+ }
+ if(nextSteps & DIicBusChannelSlave::EInvokeCb)
+ {
+ (pCb->iCallback)(pCb->iChannelId, callbackRet, (TInt)callbackTrig, pCb->iRxWords, pCb->iTxWords, pCb->iParam);
+ // Callback now processed, so re-initialise callback object members
+ pCb->iTrigger = 0;
+ pCb->iReturn = KErrNone;
+ pCb->iRxWords = 0;
+ pCb->iTxWords = 0;
+ }
+ if(nextSteps & DIicBusChannelSlave::EStartTimer)
+ {
+ chan->StartTimerByState();
+ }
+ }