/* -*- 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 "EmRegsEZPalmV.h"
#include "EmRegsEZPrv.h"

#include "EmDevice.h"			// HardwareSubID
#include "EmSession.h"			// GetDevice
#include "EmSPISlaveADS784x.h"	// EmSPISlaveADS784x

#include "PalmPack.h"
#define NON_PORTABLE
	#include "EZSumo/IncsPrv/HardwareEZ.h"			// hwrEZPortCLCDEnableOn, 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 }
};


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmV::EmRegsEZPalmV
// ---------------------------------------------------------------------------

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


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmV::~EmRegsEZPalmV
// ---------------------------------------------------------------------------

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


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmV::GetLCDScreenOn
// ---------------------------------------------------------------------------

Bool EmRegsEZPalmV::GetLCDScreenOn (void)
{
	return (READ_REGISTER (portCData) & hwrEZPortCLCDEnableOn) != 0;
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmV::GetLCDBacklightOn
// ---------------------------------------------------------------------------

Bool EmRegsEZPalmV::GetLCDBacklightOn (void)
{
	return (READ_REGISTER (portFData) & hwrEZPortFBacklightOn) != 0;
}


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

Bool EmRegsEZPalmV::GetLineDriverState (EmUARTDeviceType type)
{
	if (type == kUARTSerial)
		return (READ_REGISTER (portDData) & hwrEZPortD232Enable) != 0;

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

	return false;
}


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

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

	if (port == 'E')
	{
		// Return the hardware sub-ID.

		EmAssert (gSession);

		EmDevice	device	= gSession->GetDevice ();
		result |= ~device.HardwareSubID ();
	}

	return result;
}


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

uint8 EmRegsEZPalmV::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;
	}

	return result;
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmV::GetKeyInfo
// ---------------------------------------------------------------------------

void EmRegsEZPalmV::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	portFDir	= READ_REGISTER (portFDir);
	UInt8	portFData	= READ_REGISTER (portFData);

	rows[0]	= (portFDir & hwrEZPortFKbdRow0) != 0 && (portFData & hwrEZPortFKbdRow0) == 0;
	rows[1]	= (portFDir & hwrEZPortFKbdRow1) != 0 && (portFData & hwrEZPortFKbdRow1) == 0;
	rows[2]	= (portFDir & hwrEZPortFKbdRow2) != 0 && (portFData & hwrEZPortFKbdRow2) == 0;
}


// ---------------------------------------------------------------------------
//		¥ EmRegsEZPalmV::GetSPISlave
// ---------------------------------------------------------------------------

EmSPISlave* EmRegsEZPalmV::GetSPISlave (void)
{
	if ((READ_REGISTER (portGData) & hwrEZPortGADCOff) == 0)
	{
		return fSPISlaveADC;
	}

	return NULL;
}