crtctimings.cpp

X-scale 27x 平台

//
// Copyright (c) Chrontel Inc.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Chrontel end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
/*++
THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.

Module Name:
   crtctiming.cpp
Abstract:

Functions:

Notes:

Revision:
   12/20/02, Roger Yu, Create the file
*/

#include	"precomp.h"
#include	"XSLGPE.h"


static DISPTIMING tftTimings[]={
// 640x480, 
	  // dwSize           , dwDotClock,
	{ sizeof(DISPTIMING), 25000, 
      //dwHActive, dwHSyncWidth, dwHFrontPorch, dwHBackPorch, dwHRefresh
	  640, 64, 40, 40, 	0,
	  //dwVActive, dwVSyncWidth, dwVFrontPorch, dwVBackPorch, dwVRefresh
	  480, 2,  21, 22,  60,
	  //flFlags (bHSyncPolarity, bVSyncPolarity, bBlankPolarity, bClockDouble, bLineDouble,..} 
	{1,0,0,0,0 }
	},
// 800x600, 
	{ sizeof(DISPTIMING), 40000 | LCLK_L27_CHANGE, 
	  800, 64, 100, 100, 0,
	  600, 2,  74,  74,  60,
	{1,0,0,0,0 }
	},
// Orig
// 320x240,  320x480  // scale up to 640x480
	{ sizeof(DISPTIMING), 12500 | LCLK_L27_CHANGE, 
	  320, 32, 20, 20, 0,
	  240, 2,  21, 22, 60,
	{1,0,0,1,1 }
	},
// 640x400,    // for PAL mode 8 (1000x500)
	  // dwSize           , dwDotClock,
	{ sizeof(DISPTIMING), 25000, 
      //dwHActive, dwHSyncWidth, dwHFrontPorch, dwHBackPorch, dwHRefresh
	  640, 64, 148, 148, 	0,
	  //dwVActive, dwVSyncWidth, dwVFrontPorch, dwVBackPorch, dwVRefresh
	  400, 2,  49, 49,  60,
	  //flFlags (bHSyncPolarity, bVSyncPolarity, bBlankPolarity, bClockDouble, bLineDouble,..} 
	{1,0,0,0,0 }
	},
// 320x200,  // scale up to 640x400 PAL
	{ sizeof(DISPTIMING), 12500 | LCLK_L27_CHANGE, 
	  320, 32, 74, 74, 0,
	  200, 2,  49, 49, 60,
	{1,0,0,1,1 }
	},
	
};

static int tftTimingsSize= sizeof(tftTimings)/sizeof(DISPTIMING);

// Local Panel STN/TFT Timing
static DISPTIMING pasTimings[]={
// Intel DBPXA255 System & // Accelent IDPPXA250 System
// 640x480 STN Passive Dual-Panel
	  // dwSize           , dwDotClock,
	{ sizeof(DISPTIMING), 3872, 
      //dwHActive, dwHSyncWidth, dwHFrontPorch, dwHBackPorch, dwHRefresh
	  640, 3, 4,  4,	0,
	  //dwVActive, dwVSyncWidth, dwVFrontPorch, dwVBackPorch, dwVRefresh
	  240, 2, 0,  0,  60,
	  //flFlags (bHSyncPolarity, bVSyncPolarity, bBlankPolarity, bClockDouble, bLineDouble,..} 
	{0,0,0,0,0 }
	},
//@@## (Please use this and comment the upper for TFT VGA Panel)
// 640x480 TFT VGA Panel
	  // dwSize           , dwDotClock,
	{ sizeof(DISPTIMING), 25000, 
      //dwHActive, dwHSyncWidth, dwHFrontPorch, dwHBackPorch, dwHRefresh
	  640, 2, 2,  160,	0,
	  //dwVActive, dwVSyncWidth, dwVFrontPorch, dwVBackPorch, dwVRefresh
	  480, 45, 0,  0,  60,
	  //flFlags (bHSyncPolarity, bVSyncPolarity, bBlankPolarity, bClockDouble, bLineDouble,..} 
	{0,0,0,0,0 }
	},
// 320x240,  // TFTQVGA  Landscape
	  // dwSize           , dwDotClock,
	{ sizeof(DISPTIMING), 6220, 
      //dwHActive, dwHSyncWidth, dwHFrontPorch, dwHBackPorch, dwHRefresh
	  320, 2, 4,  52,	0,
	  //dwVActive, dwVSyncWidth, dwVFrontPorch, dwVBackPorch, dwVRefresh
	  240, 3, 4,  4,  60,
	  //flFlags (bHSyncPolarity, bVSyncPolarity, bBlankPolarity, bClockDouble, bLineDouble,..} 
	{1,1,0,0,0 }
	},
// 240x320,  // TFTQVGA  Portrait
	  // dwSize           , dwDotClock,
	{ sizeof(DISPTIMING), 4150, 
      //dwHActive, dwHSyncWidth, dwHFrontPorch, dwHBackPorch, dwHRefresh
	  240, 13, 10, 9,	0,
	  //dwVActive, dwVSyncWidth, dwVFrontPorch, dwVBackPorch, dwVRefresh
	  320, 2, 6, 4,  60,
	  //flFlags (bHSyncPolarity, bVSyncPolarity, bBlankPolarity, bClockDouble, bLineDouble,..} 
	{0,0,0,0,0 }
	},
// 176x220,  //  
	  // dwSize           , dwDotClock,
	{ sizeof(DISPTIMING), 3872, 
      //dwHActive, dwHSyncWidth, dwHFrontPorch, dwHBackPorch, dwHRefresh
	  176, 3, 124,  4,	0,
	  //dwVActive, dwVSyncWidth, dwVFrontPorch, dwVBackPorch, dwVRefresh
	  220, 2, 3,  0,  60,
	  //flFlags (bHSyncPolarity, bVSyncPolarity, bBlankPolarity, bClockDouble, bLineDouble,..} 
	{1,1,1,0,0 }
	},

};

static int pasTimingsSize= sizeof(pasTimings)/sizeof(DISPTIMING);


PDISPTIMING FindCrtcTiming(int sx, int sy, BOOL chvoe_time)
{
    DISPTIMING *pdt;
	int sdt, i;

	if (chvoe_time) {
		pdt = tftTimings;
		sdt = tftTimingsSize;
	}
	else {
		pdt = pasTimings;
		sdt = pasTimingsSize;
	}

	for (i=0; i<sdt; i++) {
		if ( (pdt[i].dwHActive == (unsigned)sx) && 
			 (pdt[i].dwVActive == (unsigned)sy)
		)	break;
	}
	if (i>=sdt) i=0;

	//special for TFT VGA panel
//	if ((!chvoe_time) && (sx==640) && (sy==480) && (bIsTftPanel) ) i=1;

	return (&pdt[i]);
}