1 // Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 // lukasz.forynski@gmail.com

    13 //

    14 // Description:

    15 // omap3530/omap3530_drivers/spi/master.h

    16 //

    17 

    18 

    19 #ifndef __OMAP3530_SPI_MASTER_H__

    20 #define __OMAP3530_SPI_MASTER_H__

    21 

    22 #include <drivers/iic_channel.h>

    23 

    24 _LIT(KIicPslThreadName,"SpiChannelThread_");

    25 const TInt KIicPslDfcPriority = 0;

    26 const TInt KIicPslThreadPriority = 24;

    27 

    28 // class declaration for SPI master

    29 class DSpiMasterBeagle : public DIicBusChannelMaster

    30 	{

    31 public:

    32 	static DSpiMasterBeagle* New(TInt aChannelNumber, const TBusType aBusType, const TChannelDuplex aChanDuplex);

    33 	virtual TInt DoRequest(TIicBusTransaction* aTransaction); // Gateway function for PSL implementation

    34 

    35 private:

    36 	DSpiMasterBeagle(TInt aChannelNumber, const TBusType aBusType, const TChannelDuplex aChanDuplex);

    37 

    38 	// Override base-class pure virtual methods

    39 	virtual TInt DoCreate();

    40 	virtual TInt CheckHdr(TDes8* aHdr);

    41 	virtual TInt HandleSlaveTimeout();

    42 

    43 	// Internal methods

    44 	TInt PrepareConfiguration();

    45 	TInt ConfigureInterface();

    46 	TInt ProcessNextTransfers();

    47 	TInt StartTransfer(TIicBusTransfer* aTransferPtr, TUint8 aType);

    48 	TInt DoTransfer(TUint8 aType);

    49 	static void Isr(TAny* aPtr);

    50 	static void TransferEndDfc(TAny* aPtr);

    51 	void ExitComplete(TInt aErr, TBool aComplete = ETrue);

    52 

    53 #ifdef _DEBUG

    54 	void DumpCurrentStatus(const TInt8* aWhere = NULL);

    55 #endif

    56 

    57 private:

    58 	TDfc iTransferEndDfc;

    59 	TIicOperationType iOperation;

    60 	TUint8 iWordSize;

    61 

    62 	TInt8 iTxFifoThreshold;

    63 	enum TMyState

    64 		{

    65 		EIdle,

    66 		EBusy

    67 		};

    68 	TMyState iState;

    69 

    70 	TInt iIrqId;

    71 	TLinAddr iHwBase;

    72 

    73 	// Pointers used to store current transfers information

    74 	TIicBusTransfer* iHalfDTransfer;

    75 	TIicBusTransfer* iFullDTransfer;

    76 

    77 	// Pointer to the current transaction.

    78 	TIicBusTransaction* iCurrTransaction;

    79 

    80 	// Pointers to buffers used for Rx and Tx transfers

    81 	TInt8 *iTxData;

    82 	TInt8 *iRxData;

    83 	TInt8 *iTxDataEnd;

    84 	TInt8 *iRxDataEnd;

    85 

    86 	// global status of the transaction

    87 	volatile TInt iTransactionStatus;

    88 

    89 	TConfigSpiV01 iCurrHeader;

    90 	TInt iCurrSS;

    91 	TInt iCurrSlavePinSet;

    92 	};

    93 

    94 #endif //__OMAP3530_SPI_MASTER_H__