// Copyright (c) 2010 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:

// lukasz.forynski@gmail.com

//

// Description:

// omap3530/omap3530_drivers/spi/slave.h

//

#ifndef __OMAP3530_SPI_SLAVE_H__

#define __OMAP3530_SPI_SLAVE_H__

#include <drivers/iic_channel.h>

class DSpiSlaveBeagle: public DIicBusChannelSlave

	{

public:

	static DSpiSlaveBeagle* New(TInt aChannelNumber, const TBusType aBusType,

	                              const TChannelDuplex aChanDuplex);

	// Gateway function for PSL implementation

	virtual TInt DoRequest(TInt aOperation);

	DSpiSlaveBeagle(TInt aChannelNumber, const TBusType aBusType,

	                 const TChannelDuplex aChanDuplex);

private:

	// Overriders for base class pure-virtual methods

	virtual TInt DoCreate(); // second-stage construction,

	virtual TInt CheckHdr(TDes8* aHdrBuff);

	virtual void ProcessData(TInt aTrigger, TIicBusSlaveCallback* aCb);

	// Internal methods..

	TBool TransConfigDiffersFromPrev();

	TInt ConfigureInterface();

	TInt AsynchConfigureInterface();

	TInt InitTransfer();

	// ISR handler and other static methods..

	static void IicPslIsr(TAny* aPtr);

	static void TimeoutCallback(TAny* aPtr);

	static inline void NotifyClientEnd(DSpiSlaveBeagle* aPtr);

	// Register base for the Master channel

	TUint iSlaveChanBase;

	// Interrupt ID for the Master channel

	TInt iSlaveIntId;

	// Bit mask of the transfer triggers managed by the channel

	TUint8 iTrigger;

	// Granularity, expressed as the number of bytes in a word

	TInt8 iWordSize;

	// Flag indicating transmission activity - optional, may not be required for all bus types

	// In the template example it is used to indicate transitions on a chip-select line, such as for SPI.

	TInt8 iInProgress;

	// Dummy variable used merely to demonstrate the asynchronous channel capture mechanism

	// See method AsynchConfigureInterface

	TInt8 iAsyncConfig;

	// Pointers to buffers used for Rx and Tx transfers

	TInt8 *iTxData;

	TInt8 *iRxData;

	TInt8 *iTxDataEnd;

	TInt8 *iRxDataEnd;

	// Timer to guard 'while' loops..

	NTimer iHwGuardTimer;

	// status of the transaction

	volatile TInt iTransactionStatus;

	};

#endif /*__OMAP3530_SPI_SLAVE_H__*/