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/**
 * \file
 *
 * Interface for Serial Peripheral Interface (SPI) controller.
 *
 */

#ifndef _QSPI_
#define _QSPI_
/*----------------------------------------------------------------------------
 *        Macros
 *----------------------------------------------------------------------------*/

/**
 *
 * Here are several macros which should be used when configuring a SPI
 * peripheral.
 *
 * \section qspi_configuration_macros SPI Configuration Macros
 * - \ref QSPI_PCS
 * - \ref QSPI_SCBR
 * - \ref QSPI_DLYBS
 * - \ref QSPI_DLYBCT
 */

/** Calculates the value of the CSR SCBR field given the baudrate and MCK. */
#define QSPI_SCBR(baudrate, masterClock) \
	((uint32_t) (masterClock / baudrate) << 8)

/** Calculates the value of the CSR DLYBS field given the desired delay (in ns) */
#define QSPI_DLYBS(delay, masterClock) \
	((uint32_t) (((masterClock / 1000000) * delay) / 1000) << 16)

/** Calculates the value of the CSR DLYBCT field given the desired delay (in ns) */
#define QSPI_DLYBCT(delay, masterClock) \
	((uint32_t) (((masterClock / 1000000) * delay) / 32000) << 24)

/*--------------------------------------------------------------------------- */

#ifdef __cplusplus
extern "C" {
#endif

/*----------------------------------------------------------------------------
 *        Exported functions
 *----------------------------------------------------------------------------*/

/** \brief qspi access modes
 */
typedef enum {
	CmdAccess = 0,
	ReadAccess,
	WriteAccess
} Access_t;

/** \brief qspi modes SPI or QSPI
 */
typedef enum {
	SpiMode = QSPI_MR_SMM_SPI,
	QspiMemMode = QSPI_MR_SMM_MEMORY
} QspiMode_t;


/** \brief qspi clock modes , regarding clock phase and clock polarity
 */
typedef enum {
	ClockMode_00 = 0,
	ClockMode_10,
	ClockMode_01,
	ClockMode_11
} QspiClockMode_t;


/** \brief qspi status codes
 */
typedef enum {
	QSPI_SUCCESS = 0,
	QSPI_BUSY,
	QSPI_BUSY_SENDING,
	QSPI_READ_ERROR,
	QSPI_WRITE_ERROR,
	QSPI_UNKNOWN_ERROR,
	QSPI_INIT_ERROR,
	QSPI_INPUT_ERROR,
	QSPI_TOTAL_ERROR
} QspidStatus_t;


/** \brief qspi status regiter bits
 */
typedef enum {
	IsReceived    = QSPI_SR_RDRF,
	IsTxSent      = QSPI_SR_TDRE,
	IsTxEmpty     = QSPI_SR_TXEMPTY,
	IsOverrun     = QSPI_SR_OVRES,
	IsCsRise      = QSPI_SR_CSR,
	IsCsAsserted  = QSPI_SR_CSS,
	IsEofInst     = QSPI_SR_INSTRE,
	IsEnabled     = QSPI_SR_QSPIENS
} QspiStatus_t;

/** \brief qspi command structure
 */
typedef struct {
	uint8_t       Instruction;
	uint8_t       Option;
} QspiMemCmd_t;

/** \brief qspi buffer structure
 */
typedef struct {
	uint32_t      TxDataSize;     /* Tx buffer size */
	uint32_t      RxDataSize;     /* Rx buffer size */
	const void    *pDataTx;       /* Tx buffer */
	void          *pDataRx;       /* Rx buffer */
} QspiBuffer_t;


/** \brief qspi frame structure for QSPI mode
 */
typedef struct {
	union _QspiInstFrame {
		uint32_t val;
		struct _QspiInstFrameBM {
			uint32_t bwidth: 3,         /** Width of QSPI Addr , inst data */
					 reserved0: 1,       /** Reserved*/
					 bInstEn: 1,        /** Enable Inst */
					 bAddrEn: 1,        /** Enable Address */
					 bOptEn: 1,         /** Enable Option */
					 bDataEn: 1,        /** Enable Data */
					 bOptLen: 2,        /** Option Length*/
					 bAddrLen: 1,       /** Addrs Length*/
					 reserved1: 1,       /** Option Length*/
					 bXfrType: 2,       /** Transfer type*/
					 bContinuesRead: 1, /** Continoues read mode*/
					 reserved2: 1,       /** Reserved*/
					 bDummyCycles: 5,   /**< Unicast hash match */
					 reserved3: 11;      /** Reserved*/
		} bm;
	} InstFrame;
	uint32_t       Addr;
} QspiInstFrame_t;

/** \brief qspi driver structure
 */
typedef struct {
	uint8_t           qspiId;         /* QSPI ID */
	Qspi              *pQspiHw;       /* QSPI Hw instance */
	QspiMode_t        qspiMode;       /* Qspi mode: SPI or QSPI */
	QspiMemCmd_t      qspiCommand;    /* Qspi command structure*/
	QspiBuffer_t      qspiBuffer;     /* Qspi buffer*/
	QspiInstFrame_t   *pQspiFrame;    /* Qspi QSPI mode Fram register informations*/
} Qspid_t;


void QSPI_SwReset(Qspi *pQspi);

void QSPI_Disable(Qspi *pQspi);

void QSPI_Enable(Qspi *pQspi);

QspidStatus_t QSPI_EndTransfer(Qspi *pQspi);

uint32_t QSPI_GetStatus(Qspi *pQspi, const QspiStatus_t rStatus);

void QSPI_ConfigureClock(Qspi *pQspi, QspiClockMode_t ClockMode,
						  uint32_t dwClockCfg);

QspidStatus_t QSPI_SingleReadSPI(Qspid_t *pQspid, uint16_t *const pData);

QspidStatus_t QSPI_MultiReadSPI(Qspid_t *pQspid, uint16_t *
								 const pData, uint32_t NumOfBytes);

QspidStatus_t QSPI_SingleWriteSPI(Qspid_t *pQspid, uint16_t const *pData);

QspidStatus_t QSPI_MultiWriteSPI(Qspid_t *pQspid, uint16_t const *pData ,
								  uint32_t NumOfBytes);

QspidStatus_t QSPI_EnableIt(Qspi *pQspi, uint32_t dwSources);

QspidStatus_t QSPI_DisableIt(Qspi *pQspi, uint32_t dwSources);

uint32_t QSPI_GetItMask(Qspi *pQspi);

uint32_t QSPI_GetEnabledItStatus(Qspi *pQspi);

QspidStatus_t QSPI_ConfigureInterface(Qspid_t *pQspid, QspiMode_t Mode,
									   uint32_t dwConfiguration);

QspidStatus_t QSPI_SendCommand(Qspid_t *pQspi, uint8_t const KeepCfg);

QspidStatus_t QSPI_SendCommandWithData(Qspid_t *pQspi, uint8_t const KeepCfg);

QspidStatus_t QSPI_ReadCommand(Qspid_t *pQspi,  uint8_t const KeepCfg);

QspidStatus_t QSPI_EnableMemAccess(Qspid_t *pQspi, uint8_t const KeepCfg,
									uint8_t ScrambleFlag);

QspidStatus_t QSPI_ReadWriteMem(Qspid_t *pQspid, Access_t const ReadWrite);

#ifdef __cplusplus
}
#endif

#endif /* #ifndef _QSPI_ */