// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// 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:

// Nokia Corporation - initial contribution.

//

// Contributors:

// iwanj@users.sourceforge.net added NGA support based on Syborg display PDD

// Description:

// omap3530/beagle_drivers/lcd/lcd.cpp

// Implementation of an LCD driver. 

// This file is part of the Beagle Base port

// N.B. This sample code assumes that the display supports setting the backlight on or off, 

// as well as adjusting the contrast and the brightness.

#include <videodriver.h>

#include <platform.h>

#include <nkern.h>

#include <kernel.h>

#include <kern_priv.h>

#include <kpower.h>

#include <assp/omap3530_assp/omap3530_assp_priv.h>

#include <assp/omap3530_assp/omap3530_hardware_base.h>

#include <assp/omap3530_assp/omap3530_prcm.h>

//#undef __KTRACE_OPT

//#define __KTRACE_OPT(c,p)	p

#define DSS_SYSCONFIG				0x48050010

#define DISPC_SYSSTATUS				0x48050414

#define DISPC_SYSCONFIG				0x48050410

#define DISPC_CONFIG				0x48050444

#define DISPC_DEFAULT_COLOR0		0x4805044c

#define DISPC_TRANS_COLOR0			0x48050454

#define DISPC_TIMING_H				0x48050464

#define DISPC_TIMING_V				0x48050468

#define DISPC_POL_FREQ				0x4805046c

#define DISPC_DIVISOR				0x48050470

#define DISPC_SIZE_LCD				0x4805047c

#define DISPC_GFX_BA1				0x48050480

#define DISPC_GFX_BA2				0x48050484

#define DISPC_GFX_POSITION			0x48050488

#define DISPC_GFX_SIZE				0x4805048c

#define DISPC_GFX_ATTRIBUTES		0x480504a0

#define DISPC_GFX_FIFO_THRESHOLD	0x480504a4

#define DISPC_GFX_FIFO_SIZE_STATUS	0x480504a8

#define DISPC_GFX_ROW_INC			0x480504ac

#define DISPC_GFX_PIXEL_INC			0x480504b0

#define DISPC_GFX_WINDOW_SKIP		0x480504b4

#define DISPC_GFX_TABLE_BA			0x480504b8

#define DISPC_CONTROL				0x48050440

#define GET_REGISTER(Reg)		*( (TUint *) Omap3530HwBase::TVirtual<Reg>::Value )

#define SET_REGISTER(Reg,Val)	*( (TUint *) Omap3530HwBase::TVirtual<Reg>::Value ) = Val

#define _MODE_1280x1024_

//#define _MODE_1024x768_

#ifdef _MODE_800x600_

// ModeLine       "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync

// Decoded by: http://www.tkk.fi/Misc/Electronics/faq/vga2rgb/calc.html

#	define PIXEL_CLK	40000

#	define H_DISP		800

#	define H_FPORCH	40

#	define H_SYNC		128

#	define H_BPORCH	88

#	define H_SYNC_POL	1

#	define V_DISP		600

#	define V_FPORCH	1

#	define V_SYNC		4

#	define V_BPORCH	23

#	define V_SYNC_POL	1

#	define INTERLACE_ENABLE	0

#endif

#ifdef _MODE_1024x768_

// ModeLine       "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -hsync -vsync

// Decoded by: http://www.tkk.fi/Misc/Electronics/faq/vga2rgb/calc.html

#	define PIXEL_CLK	65000

#	define H_DISP		1024

#	define H_FPORCH	24

#	define H_SYNC		136

#	define H_BPORCH	160

#	define H_SYNC_POL	0

#	define V_DISP		768

#	define V_FPORCH	3

#	define V_SYNC		6

#	define V_BPORCH	29

#	define V_SYNC_POL	0

#	define INTERLACE_ENABLE	0

#endif

#ifdef _MODE_1280x1024_

// ModeLine "1280x1024@60" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync

// Decoded by: http://www.tkk.fi/Misc/Electronics/faq/vga2rgb/calc.html

#	define PIXEL_CLK	108000

#	define H_DISP		1280

#	define H_FPORCH	48

#	define H_SYNC		112

#	define H_BPORCH	248

#	define H_SYNC_POL	1

#	define V_DISP		1024

#	define V_FPORCH	1

#	define V_SYNC		3

#	define V_BPORCH	38

#	define V_SYNC_POL	1

#	define INTERLACE_ENABLE	0

#endif

// TO DO: (mandatory)

// If the display supports Contrast and/or Brightness control then supply the following defines:

// This is only example code... you may need to modify it for your hardware

const TInt KConfigInitialDisplayContrast	= 128;

const TInt KConfigLcdMinDisplayContrast		= 1;

const TInt KConfigLcdMaxDisplayContrast		= 255;

const TInt KConfigInitialDisplayBrightness	= 128;

const TInt KConfigLcdMinDisplayBrightness	= 1;

const TInt KConfigLcdMaxDisplayBrightness	= 255;

// TO DO: (mandatory)

// define a macro to calculate the screen buffer size

// This is only example code... you may need to modify it for your hardware

// aBpp is the number of bits-per-pixel, aPpl is the number of pixels per line and 

// aLpp number of lines per panel

#define FRAME_BUFFER_SIZE(aBpp,aPpl,aLpp)	(aBpp*aPpl*aLpp)/8	

// TO DO: (mandatory)

// define the physical screen dimensions

// This is only example code... you need to modify it for your hardware

// TO DO: (mandatory)

// define the characteristics of the LCD display

// This is only example code... you need to modify it for your hardware

const TBool	KConfigLcdIsMono				= EFalse;

const TBool	KConfigLcdPixelOrderRGB			= ETrue;

// TO DO: (mandatory)

// define the display dimensions in TWIPs

// A TWIP is a 20th of a point.  A point is a 72nd of an inch

// Therefore a TWIP is a 1440th of an inch

// This is only example code... you need to modify it for your hardware

// TO DO: (mandatory)

// define the available display modes

// This is only example code... you need to modify it for your hardware

const TInt  KConfigLcdNumberOfDisplayModes	= 1;

const TInt  KConfigLcdInitialDisplayMode	= 0;

struct SLcdConfig

	{

	TInt iMode;

	TInt iOffsetToFirstVideoBuffer;

	TInt iLenghtOfVideoBufferInBytes;

	TInt iOffsetBetweenLines;

	TBool iIsPalettized;

	TInt iBitsPerPixel;

	};

static const SLcdConfig Lcd_Mode_Config[KConfigLcdNumberOfDisplayModes]=

	{

		{

		0,								// iMode

		0,								// iOffsetToFirstVideoBuffer

		FRAME_BUFFER_SIZE(32/*16*/, KConfigLcdWidth, KConfigLcdHeight),	// iLenghtOfVideoBufferInBytes

		KConfigLcdWidth*4,//2,				// iOffsetBetweenLines

		EFalse,							// iIsPalettized

		32,//16								// iBitsPerPixel

		}

	};	

_LIT(KLitLcd,"LCD");

//

// TO DO: (optional)

//

// Add any private functions and data you require

//

NONSHARABLE_CLASS(DLcdPowerHandler) : public DPowerHandler

	{

public: 

	DLcdPowerHandler();

	// from DPowerHandler

	void PowerDown(TPowerState);

	void PowerUp();

	void PowerUpDfc();

	void PowerDownDfc();

	TInt Create();

	void DisplayOn();

	void DisplayOff();

	TInt HalFunction(TInt aFunction, TAny* a1, TAny* a2);

	void PowerUpLcd(TBool aSecure);

	void PowerDownLcd();

	void ScreenInfo(TScreenInfoV01& aInfo);

	void WsSwitchOnScreen();

	void WsSwitchOffScreen();

	void HandleMsg();

	void SwitchDisplay(TBool aSecure);

	void SetBacklightState(TBool aState);

	void BacklightOn();

	void BacklightOff();

	TInt SetContrast(TInt aContrast);

	TInt SetBrightness(TInt aBrightness);

#ifdef ENABLE_GCE_MODE

	void ChangeFrameBufferAddress(TUint32 aFbAddr);

#endif

private:

	TInt SetPaletteEntry(TInt aEntry, TInt aColor);

	TInt GetPaletteEntry(TInt aEntry, TInt* aColor);

	TInt NumberOfPaletteEntries();

	TInt GetCurrentDisplayModeInfo(TVideoInfoV01& aInfo, TBool aSecure);

	TInt GetSpecifiedDisplayModeInfo(TInt aMode, TVideoInfoV01& aInfo);

	TInt SetDisplayMode(TInt aMode);

	void SplashScreen();

	TInt GetDisplayColors(TInt* aColors);

#ifdef ENABLE_GCE_MODE

public:

	static DLcdPowerHandler* pLcd;

	TInt iSize;

	TPhysAddr iCompositionPhysical;

	TVideoInfoV01 iVideoInfo;

	TDfcQue* iDfcQ;

	TPhysAddr ivRamPhys;

#endif

private:

	TBool iIsPalettized;

	TBool iDisplayOn;				// to prevent a race condition with WServer trying to power up/down at the same time

	DPlatChunkHw* iChunk;

	DPlatChunkHw* iSecureChunk;

	TBool iWsSwitchOnScreen;

 	TBool iSecureDisplay;

	TMessageQue iMsgQ;

	TDfc iPowerUpDfc;

	TDfc iPowerDownDfc;	

#ifndef ENABLE_GCE_MODE

	TDfcQue* iDfcQ;

	TVideoInfoV01 iVideoInfo;

	TPhysAddr ivRamPhys;

#endif

	TVideoInfoV01 iSecureVideoInfo;

	NFastMutex iLock;				// protects against being preempted whilst manipulating iVideoInfo/iSecureVideoInfo

	TPhysAddr iSecurevRamPhys;

	TBool iBacklightOn;

	TInt iContrast;

	TInt iBrightness;

	};

/**

HAL handler function

@param	aPtr a pointer to an instance of DLcdPowerHandler

@param	aFunction the function number

@param	a1 an arbitrary parameter

@param	a2 an arbitrary parameter

*/

LOCAL_C TInt halFunction(TAny* aPtr, TInt aFunction, TAny* a1, TAny* a2)

	{

	DLcdPowerHandler* pH=(DLcdPowerHandler*)aPtr;

	return pH->HalFunction(aFunction,a1,a2);

	}

/**

DFC for receiving messages from the power handler

@param	aPtr a pointer to an instance of DLcdPowerHandler

*/

void rxMsg(TAny* aPtr)

	{

	DLcdPowerHandler& h=*(DLcdPowerHandler*)aPtr;

	h.HandleMsg();

	}

/**

DFC for powering up the device

@param aPtr	aPtr a pointer to an instance of DLcdPowerHandler

*/

void power_up_dfc(TAny* aPtr)

	{

	((DLcdPowerHandler*)aPtr)->PowerUpDfc();

	}

/**

DFC for powering down the device

@param aPtr	aPtr a pointer to an instance of DLcdPowerHandler

*/

void power_down_dfc(TAny* aPtr)

	{

	((DLcdPowerHandler*)aPtr)->PowerDownDfc();

	}