/* -*- mode: C++; tab-width: 4 -*- */
/* ===================================================================== *\
	Copyright (c) 2000-2001 Palm, Inc. or its subsidiaries.
	All rights reserved.

	This file is part of the Palm OS Emulator.

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.
\* ===================================================================== */

#include "EmCommon.h"
#include "EmRegsEZPalmIIIc.h"
#include "EmRegsEZPrv.h"

#include "EmSPISlaveADS784x.h"	// EmSPISlaveADS784x

#include "PalmPack.h"
#define NON_PORTABLE
	#include "EZAustin/IncsPrv/HardwareAustin.h"	// hwrEZPortCKbdRow0, hwrEZPortBRS232Enable, etc.
#undef NON_PORTABLE
#include "PalmPackPop.h"

const int		kNumButtonRows = 3;
const int		kNumButtonCols = 4;

const uint16	kButtonMap[kNumButtonRows][kNumButtonCols] =
{
	{ keyBitHard1,	keyBitHard2,	keyBitHard3,	keyBitHard4 },
	{ keyBitPageUp,	keyBitPageDown,	0,				0 },
	{ keyBitPower,	keyBitContrast,	keyBitHard2,	0 }
};


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::EmRegsEZPalmIIIc
// ---------------------------------------------------------------------------

EmRegsEZPalmIIIc::EmRegsEZPalmIIIc (void) :
	EmRegsEZ (),
	fSPISlaveADC (new EmSPISlaveADS784x (kChannelSet2))
{
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::~EmRegsEZPalmIIIc
// ---------------------------------------------------------------------------

EmRegsEZPalmIIIc::~EmRegsEZPalmIIIc (void)
{
	delete fSPISlaveADC;
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetLCDScreenOn
// ---------------------------------------------------------------------------

Bool EmRegsEZPalmIIIc::GetLCDScreenOn (void)
{
	// Override the Dragonball version and let the SED 1375 handle it.

	return EmHALHandler::GetLCDScreenOn ();
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetLCDBacklightOn
// ---------------------------------------------------------------------------

Bool EmRegsEZPalmIIIc::GetLCDBacklightOn (void)
{
	// Override the Dragonball version and let the SED 1375 handle it.

	return EmHALHandler::GetLCDBacklightOn ();
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetLCDHasFrame
// ---------------------------------------------------------------------------

Bool EmRegsEZPalmIIIc::GetLCDHasFrame (void)
{
	// Override the Dragonball version and let the SED 1375 handle it.

	return EmHALHandler::GetLCDHasFrame ();
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetLCDBeginEnd
// ---------------------------------------------------------------------------

void EmRegsEZPalmIIIc::GetLCDBeginEnd (emuptr& begin, emuptr& end)
{
	// Override the Dragonball version and let the SED 1375 handle it.

	EmHALHandler::GetLCDBeginEnd (begin, end);
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetLCDScanlines
// ---------------------------------------------------------------------------

void EmRegsEZPalmIIIc::GetLCDScanlines (EmScreenUpdateInfo& info)
{
	// Override the Dragonball version and let the SED 1375 handle it.

	EmHALHandler::GetLCDScanlines (info);
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetLineDriverState
// ---------------------------------------------------------------------------
// Return whether or not the line drivers for the given object are open or
// closed.

Bool EmRegsEZPalmIIIc::GetLineDriverState (EmUARTDeviceType type)
{
	if (type == kUARTSerial)
		return (READ_REGISTER (portBData) & hwrEZPortBRS232Enable) != 0;

	if (type == kUARTIR)
		return (READ_REGISTER (portGData) & hwrEZPortGIRShutdown) == 0;

	return false;
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetPortInputValue
// ---------------------------------------------------------------------------
// Return the GPIO values for the pins on the port.  These values are used
// if the select pins are high.

uint8 EmRegsEZPalmIIIc::GetPortInputValue (int port)
{
	uint8	result = EmRegsEZ::GetPortInputValue (port);

	if (port == 'F')
	{
		// Ensure that bit hwrEZPortFIXTRNL2 is set.  If it's clear, HotSync
		// will sync via the modem instead of the serial port.

		// Make sure hwrEZPortFLCDPowered is always set, or HwrDisplayWake will hang

		result |= hwrEZPortFIXTRNL2 | hwrEZPortFLCDPowered;
	}

	return result;
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetPortInternalValue
// ---------------------------------------------------------------------------
// Return the dedicated values for the pins on the port.  These values are
// used if the select pins are low.

uint8 EmRegsEZPalmIIIc::GetPortInternalValue (int port)
{
	uint8	result = EmRegsEZ::GetPortInternalValue (port);

	if (port == 'D')
	{
		// Make sure that hwrEZPortDPowerFail is set.  If it's clear,
		// the battery code will make the device go to sleep immediately.

		result |= hwrEZPortDPowerFail;

		// Make sure hwrEZPortDAdapterInstalled is set, or the dock-status routines
		// will report that we're powered (even if we aren't docked!).

		result |= hwrEZPortDAdapterInstalled;
	}

	return result;
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetKeyInfo
// ---------------------------------------------------------------------------

void EmRegsEZPalmIIIc::GetKeyInfo (int* numRows, int* numCols,
								uint16* keyMap, Bool* rows)
{
	*numRows = kNumButtonRows;
	*numCols = kNumButtonCols;

	memcpy (keyMap, kButtonMap, sizeof (kButtonMap));

	// Determine what row is being asked for.

	UInt8	portCDir	= READ_REGISTER (portCDir);
	UInt8	portCData	= READ_REGISTER (portCData);

	rows[0]	= (portCDir & hwrEZPortCKbdRow0) != 0 && (portCData & hwrEZPortCKbdRow0) == 0;
	rows[1]	= (portCDir & hwrEZPortCKbdRow1) != 0 && (portCData & hwrEZPortCKbdRow1) == 0;
	rows[2]	= (portCDir & hwrEZPortCKbdRow2) != 0 && (portCData & hwrEZPortCKbdRow2) == 0;
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmIIIc::GetSPISlave
// ---------------------------------------------------------------------------

EmSPISlave* EmRegsEZPalmIIIc::GetSPISlave (void)
{
	if ((READ_REGISTER (portBData) & hwrEZPortBCS_ADC) == 0)
	{
		return fSPISlaveADC;
	}

	return NULL;
}