// 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:

// lukasz.forynski@gmail.com

//

// Contributors:

//

// Description:

// omap3530/beagle_drivers/byd_touch/common/controller.cpp

//

#include <drivers/iic.h>

#include <drivers/iic_channel.h>

#include <assp/omap3530_assp/omap3530_gpio.h>

#include "controller.h"

//#define VERBOSE_DEBUG

#ifdef VERBOSE_DEBUG

#define LOG_FUNCTION_CALL Kern::Printf("%s()", __FUNCTION__)

#else

#define LOG_FUNCTION_CALL

#endif

TTouchControllerInterface::TTouchControllerInterface() :

	iSpiTransactionHeader(KHeader),

	iSpiTxTransfer(TIicBusTransfer::EMasterWrite, KBufGranulatity, &iSpiWriteBuffer),

	iSpiRxTransfer(TIicBusTransfer::EMasterRead, KBufGranulatity, &iSpiReadBuffer),

	iSpiTransaction(&iSpiTransactionHeader, &iSpiTxTransfer)

	{

	// after all above - make the transaction full duplex using the Rx buffer

	iSpiTransaction.SetFullDuplexTrans(&iSpiRxTransfer);

	// set buffer length only once..

	iSpiWriteBuffer.SetLength(iSpiWriteBuffer.MaxLength());

	iSpiReadBuffer.SetLength(iSpiReadBuffer.MaxLength());

	// and set SPI addressing / bus configuration

	iSpiBusId = 0;

	SET_BUS_TYPE(iSpiBusId, DIicBusChannel::ESpi);

	SET_CHAN_NUM(iSpiBusId, KSpiModule);

	SET_SLAVE_ADDR(iSpiBusId, KSpiSlaveAddr);

	}

TInt TTouchControllerInterface::Read(TUint8 aRegAddress, TUint8& aValue)

	{

	LOG_FUNCTION_CALL;

	iSpiWriteBuffer[0] = KReadCommand;

	iSpiWriteBuffer[1] = aRegAddress;

	iSpiWriteBuffer[2] = 0; // TODO - might not be needed..

#ifdef VERBOSE_DEBUG

	for (int i = 0; i <KSpiPacketLength; i++)

		Kern::Printf("R0[i]: %d", iSpiReadBuffer[1]);

#endif

	TInt r = IicBus::QueueTransaction(iSpiBusId, &iSpiTransaction);

	if(r == KErrNone)

		{

		aValue = iSpiReadBuffer[2];

		}

#ifdef VERBOSE_DEBUG

	for (int i = 0; i <KSpiPacketLength; i++)

		Kern::Printf("R1[i]: %d", iSpiReadBuffer[1]);

#endif

	return r;

	}

TInt TTouchControllerInterface::Write(TUint8 aRegAddress, TUint8 aValue)

	{

	LOG_FUNCTION_CALL;

	iSpiWriteBuffer[0] = KWriteCommand;

	iSpiWriteBuffer[1] = aRegAddress;

	iSpiWriteBuffer[2] = aValue;

#ifdef VERBOSE_DEBUG

	for (int i = 0; i < 3; i++)

		Kern::Printf("WR0[i]: %d", iSpiWriteBuffer[i]);

	for (int i = 0; i <KSpiPacketLength; i++)

		Kern::Printf("W0[i]: %d", iSpiReadBuffer[1]);

#endif

	TInt r = IicBus::QueueTransaction(iSpiBusId, &iSpiTransaction);

#ifdef VERBOSE_DEBUG

	for (int i = 0; i <KSpiPacketLength; i++)

		Kern::Printf("W1[i]: %d", iSpiReadBuffer[1]);

#endif

	return r;

	}

// Touch controller

TouchController::TouchController() :

	iCallback(NULL)

	{

	}

TouchController::TouchController(TVoidCallback aCallback) :

	iCallback(aCallback)

	{

	}

TInt TouchController::HardReset()

	{

	LOG_FUNCTION_CALL;

	TInt r = GPIO::SetPinMode(KResetPin, GPIO::EEnabled);

	if(r == KErrNone)

		{

		r = GPIO::SetPinDirection(KResetPin, GPIO::EOutput);

		if(r == KErrNone)

			{

//			GPIO::SetOutputState(KResetPin, GPIO::ELow);

			GPIO::SetOutputState(KResetPin, GPIO::EHigh);

//			GPIO::SetOutputState(KResetPin, GPIO::ELow);

			Kern::NanoWait(25000); // should be > 10us

//			GPIO::SetOutputState(KResetPin, GPIO::EHigh);

			GPIO::SetOutputState(KResetPin, GPIO::ELow);

			}

		}

//	Kern::NanoWait(1000000);

//	SoftReset();

//	Kern::NanoWait(1000000);

	iInterface.Write(KMasterReadStartAddr, X1_H);

	return r;

	}

TInt TouchController::SoftReset()

	{

	LOG_FUNCTION_CALL;

	for(TInt i = 0; i<4; i++)

		{

		iCtrlRegsCache[i] = 0;

		}

	return iInterface.Write(KControl_0, KControl_0_SWRST);

	}

TInt TouchController::SetTouchMode(TTouchMode aMode)

	{

	LOG_FUNCTION_CALL;

	iCtrlRegsCache[0] &= ~KControl_0_MODE_MASK; // clear all mode bits

	switch(aMode)

		{

		case ESingle:

			iCtrlRegsCache[0] |= KControl_0_MODE_SINGLE;

			break;

		case EMulti:

			iCtrlRegsCache[0] |= KControl_0_MODE_MULTI;

			break;

		case EGesture:

			iCtrlRegsCache[0] |= KControl_0_MODE_GESTURE;

			break;

		}

	return iInterface.Write(KControl_0, iCtrlRegsCache[0]);

	}

TInt TouchController::SetResolution(TResolution aResolution)

	{

	LOG_FUNCTION_CALL;

	iCtrlRegsCache[0] &= ~KControl_0_RM_12; // clear all mode bits

	if(aResolution == ERes12Bits)

		{

		iCtrlRegsCache[0] |= KControl_0_RM_12; // set bit

		}

	return iInterface.Write(KControl_0, iCtrlRegsCache[0]);

	}

TInt TouchController::SetLongerSamplingRate(TUint aRate)

	{

	LOG_FUNCTION_CALL;

	iCtrlRegsCache[0] &= ~KControl_0_LST_MASK; // clear bits..

	iCtrlRegsCache[0] |= aRate & KControl_0_LST_MASK; // set new value..

	return iInterface.Write(KControl_0, iCtrlRegsCache[0]);

	}

TInt TouchController::SetIrqActiveTime(TUint aIrqActiveTime)

	{

	LOG_FUNCTION_CALL;

	iCtrlRegsCache[1] &= ~KControl_1_PAT_MASK; // clear bits..

	iCtrlRegsCache[1] |= (aIrqActiveTime << KControl_1_PAT_SHIFT) & KControl_1_PAT_MASK; // set new value..

	return iInterface.Write(KControl_1, iCtrlRegsCache[1]);

	}

TInt TouchController::SetPanelVoltageStabTime(TUint aVoltageStabilizationTime)

	{

	LOG_FUNCTION_CALL;

	iCtrlRegsCache[1] &= ~KControl_1_PVT_MASK; // clear bits..

	iCtrlRegsCache[1] |= (aVoltageStabilizationTime << KControl_1_PVT_SHIFT) & KControl_1_PVT_MASK; // set new value..

	return iInterface.Write(KControl_1, iCtrlRegsCache[1]);

	}

TInt TouchController::SetNumberOfColumns(TUint aNumberOfColumns)

	{

	LOG_FUNCTION_CALL;

	iCtrlRegsCache[2] &= ~KControl_2_C_MASK; // clear bits..

	iCtrlRegsCache[2] |= (aNumberOfColumns << KControl_2_C_SHIFT) & KControl_2_C_MASK;

	return iInterface.Write(KControl_2, iCtrlRegsCache[2]);

	}

TInt TouchController::SetNumberOfRows(TUint aNumberOfRows)

	{

	LOG_FUNCTION_CALL;

	iCtrlRegsCache[3] &= ~KControl_3_R_SHIFT; // clear bits..

	iCtrlRegsCache[3] |= (aNumberOfRows << KControl_3_R_SHIFT) & KControl_3_R_MASK; // set new value..

	return iInterface.Write(KControl_3, iCtrlRegsCache[3]);

	}

TInt TouchController::EnableWindowMode(TPoint aStart, TPoint aStop)

	{

	LOG_FUNCTION_CALL;

	TBool error_occured = EFalse;

	// setup window points

	TInt r = iInterface.Write(KWindowXStart_Msb, (TUint8)(aStart.iX >> 8));

	if(r != KErrNone)

		error_occured = ETrue;

	r = iInterface.Write(KWindowXStart_Lsb, (TUint8)(aStart.iX));

	if(r != KErrNone)

		error_occured = ETrue;

	r = iInterface.Write(KWindowYStart_Msb, (TUint8)(aStart.iY >> 8));

	if(r != KErrNone)

		error_occured = ETrue;

	r = iInterface.Write(KWindowYStart_Lsb, (TUint8)(aStart.iY));

	if(r != KErrNone)

		error_occured = ETrue;

	r = iInterface.Write(KWindowXStop_Msb, (TUint8)(aStop.iX >> 8));

	if(r != KErrNone)

		error_occured = ETrue;

	r = iInterface.Write(KWindowXStop_Lsb, (TUint8)(aStop.iX));

	if(r != KErrNone)

		error_occured = ETrue;

	r = iInterface.Write(KWindowYStop_Msb, (TUint8)(aStop.iY >> 8));

	if(r != KErrNone)

		error_occured = ETrue;

	r = iInterface.Write(KWindowYStop_Lsb, (TUint8)(aStop.iY));

	if(r != KErrNone)

		error_occured = ETrue;

	// enable mode

	if(!error_occured)

		{

		iCtrlRegsCache[1] |= ~KControl_1_WS; // set enable bit..

		r = iInterface.Write(KControl_1, iCtrlRegsCache[1]);

		}

	else

		{

		r = KErrGeneral;

		}

	return r;

	}

TInt TouchController::DisableWindowMode()

	{

	LOG_FUNCTION_CALL;

	iCtrlRegsCache[1] &= ~KControl_1_WS; // clear enable bit..

	return iInterface.Write(KControl_1, iCtrlRegsCache[1]);

	}

TInt TouchController::NumOfTouches()

	{

	TUint8 val = 0;

	return iInterface.Read(KTouchNumberAndType, val);

	}

TInt TouchController::GetMeasurements(TPoint* aPoints, TInt& aNumPoints)

	{

	LOG_FUNCTION_CALL;

	TInt r = KErrArgument;

	TInt num_points = 0;

	if(aPoints)

		{

		// check how many points is there to read..

		TUint8 val = 0;

		r = iInterface.Read(KTouchNumberAndType, val);

		//Kern::Printf("KTouchNumberAndType %x", val);

		// if in multi mode - read all received, but only up to one otherwise..

		num_points = val & (val & KTouchNumberAndType_MULTI ? KTouchNumberAndType_TouchNMask : 1);

		// setup the transaction:

		for (TInt i = 0; i < num_points; i++) // if anything was touched at all..

			{

			// get X coordinate

			r = iInterface.Read(X1_H + (i << 2), val);

			if (r != KErrNone)

				break;

			aPoints[i].iX = TInt(val << 8);

			r = iInterface.Read(X1_L + (i << 2) , val);

			if (r != KErrNone)

				break;

			aPoints[i].iX |= TInt(val);

			// get Y coordinate

			r = iInterface.Read(Y1_H + (i << 2), val);

			if (r != KErrNone)

				break;

			aPoints[i].iY = TInt(val << 8);

			r = iInterface.Read(Y1_L + (i << 2) , val);

			if (r != KErrNone)

				break;

			aPoints[i].iY |= TInt(val);

			}

		}

	// update number of points

	if (r != KErrNone)

		{

		aNumPoints = 0;

		}

	else

		{

		aNumPoints = num_points;

		}

	return r;

	}