init301.c

linux-2.6.15.6

/* $XFree86$ */
/* $XdotOrg$ */
/*
 * Mode initializing code (CRT2 section)
 * for SiS 300/305/540/630/730,
 *     SiS 315/550/[M]650/651/[M]661[FGM]X/[M]74x[GX]/330/[M]76x[GX],
 *     XGI V3XT/V5/V8, Z7
 * (Universal module for Linux kernel framebuffer and X.org/XFree86 4.x)
 *
 * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
 *
 * If distributed as part of the Linux kernel, the following license terms
 * apply:
 *
 * * 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 named License,
 * * or any later version.
 * *
 * * This program is distributed in the hope that it will be useful,
 * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * * GNU General Public License for more details.
 * *
 * * You should have received a copy of the GNU General Public License
 * * along with this program; if not, write to the Free Software
 * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
 *
 * Otherwise, the following license terms apply:
 *
 * * Redistribution and use in source and binary forms, with or without
 * * modification, are permitted provided that the following conditions
 * * are met:
 * * 1) Redistributions of source code must retain the above copyright
 * *    notice, this list of conditions and the following disclaimer.
 * * 2) Redistributions in binary form must reproduce the above copyright
 * *    notice, this list of conditions and the following disclaimer in the
 * *    documentation and/or other materials provided with the distribution.
 * * 3) The name of the author may not be used to endorse or promote products
 * *    derived from this software without specific prior written permission.
 * *
 * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Author: 	Thomas Winischhofer <[e-mail]>
 *
 * Formerly based on non-functional code-fragements for 300 series by SiS, Inc.
 * Used by permission.
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#if 1
#define SET_EMI		/* 302LV/ELV: Set EMI values */
#endif

#if 1
#define SET_PWD		/* 301/302LV: Set PWD */
#endif

#define COMPAL_HACK	/* Needed for Compal 1400x1050 (EMI) */
#define COMPAQ_HACK	/* Needed for Inventec/Compaq 1280x1024 (EMI) */
#define ASUS_HACK	/* Needed for Asus A2H 1024x768 (EMI) */

#include "init301.h"

#ifdef SIS300
#include "oem300.h"
#endif

#ifdef SIS315H
#include "oem310.h"
#endif

#define SiS_I2CDELAY      1000
#define SiS_I2CDELAYSHORT  150

static unsigned short	SiS_GetBIOSLCDResInfo(struct SiS_Private *SiS_Pr);
#ifdef SIS_LINUX_KERNEL
static void		SiS_SetCH70xx(struct SiS_Private *SiS_Pr, unsigned short reg, unsigned char val);
#endif

/*********************************************/
/*         HELPER: Lock/Unlock CRT2          */
/*********************************************/

void
SiS_UnLockCRT2(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->ChipType == XGI_20)
      return;
   else if(SiS_Pr->ChipType >= SIS_315H)
      SiS_SetRegOR(SiS_Pr->SiS_Part1Port,0x2f,0x01);
   else
      SiS_SetRegOR(SiS_Pr->SiS_Part1Port,0x24,0x01);
}

#ifdef SIS_LINUX_KERNEL
static
#endif
void
SiS_LockCRT2(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->ChipType == XGI_20)
      return;
   else if(SiS_Pr->ChipType >= SIS_315H)
      SiS_SetRegAND(SiS_Pr->SiS_Part1Port,0x2F,0xFE);
   else
      SiS_SetRegAND(SiS_Pr->SiS_Part1Port,0x24,0xFE);
}

/*********************************************/
/*            HELPER: Write SR11             */
/*********************************************/

static void
SiS_SetRegSR11ANDOR(struct SiS_Private *SiS_Pr, unsigned short DataAND, unsigned short DataOR)
{
   if(SiS_Pr->ChipType >= SIS_661) {
      DataAND &= 0x0f;
      DataOR  &= 0x0f;
   }
   SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x11,DataAND,DataOR);
}

/*********************************************/
/*    HELPER: Get Pointer to LCD structure   */
/*********************************************/

#ifdef SIS315H
static unsigned char *
GetLCDStructPtr661(struct SiS_Private *SiS_Pr)
{
   unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
   unsigned char  *myptr = NULL;
   unsigned short romindex = 0, reg = 0, idx = 0;

   /* Use the BIOS tables only for LVDS panels; TMDS is unreliable
    * due to the variaty of panels the BIOS doesn't know about.
    * Exception: If the BIOS has better knowledge (such as in case
    * of machines with a 301C and a panel that does not support DDC)
    * use the BIOS data as well.
    */

   if((SiS_Pr->SiS_ROMNew) &&
      ((SiS_Pr->SiS_VBType & VB_SISLVDS) || (!SiS_Pr->PanelSelfDetected))) {

      if(SiS_Pr->ChipType < SIS_661) reg = 0x3c;
      else                           reg = 0x7d;

      idx = (SiS_GetReg(SiS_Pr->SiS_P3d4,reg) & 0x1f) * 26;

      if(idx < (8*26)) {
         myptr = (unsigned char *)&SiS_LCDStruct661[idx];
      }
      romindex = SISGETROMW(0x100);
      if(romindex) {
         romindex += idx;
         myptr = &ROMAddr[romindex];
      }
   }
   return myptr;
}

static unsigned short
GetLCDStructPtr661_2(struct SiS_Private *SiS_Pr)
{
   unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
   unsigned short romptr = 0;

   /* Use the BIOS tables only for LVDS panels; TMDS is unreliable
    * due to the variaty of panels the BIOS doesn't know about.
    * Exception: If the BIOS has better knowledge (such as in case
    * of machines with a 301C and a panel that does not support DDC)
    * use the BIOS data as well.
    */

   if((SiS_Pr->SiS_ROMNew) &&
      ((SiS_Pr->SiS_VBType & VB_SISLVDS) || (!SiS_Pr->PanelSelfDetected))) {
      romptr = SISGETROMW(0x102);
      romptr += ((SiS_GetReg(SiS_Pr->SiS_P3d4,0x36) >> 4) * SiS_Pr->SiS661LCD2TableSize);
   }

   return romptr;
}
#endif

/*********************************************/
/*           Adjust Rate for CRT2            */
/*********************************************/

static BOOLEAN
SiS_AdjustCRT2Rate(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex,
		unsigned short RRTI, unsigned short *i)
{
   unsigned short checkmask=0, modeid, infoflag;

   modeid = SiS_Pr->SiS_RefIndex[RRTI + (*i)].ModeID;

   if(SiS_Pr->SiS_VBType & VB_SISVB) {

      if(SiS_Pr->SiS_VBInfo & SetCRT2ToRAMDAC) {

	 checkmask |= SupportRAMDAC2;
	 if(SiS_Pr->ChipType >= SIS_315H) {
	    checkmask |= SupportRAMDAC2_135;
	    if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
	       checkmask |= SupportRAMDAC2_162;
	       if(SiS_Pr->SiS_VBType & VB_SISRAMDAC202) {
		  checkmask |= SupportRAMDAC2_202;
	       }
	    }
	 }

      } else if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToLCDA)) {

	 checkmask |= SupportLCD;
	 if(SiS_Pr->ChipType >= SIS_315H) {
	    if(SiS_Pr->SiS_VBType & VB_SISVB) {
	       if((SiS_Pr->SiS_LCDInfo & DontExpandLCD) && (SiS_Pr->SiS_LCDInfo & LCDPass11)) {
	          if(modeid == 0x2e) checkmask |= Support64048060Hz;
	       }
	    }
	 }

      } else if(SiS_Pr->SiS_VBInfo & SetCRT2ToHiVision) {

	 checkmask |= SupportHiVision;

      } else if(SiS_Pr->SiS_VBInfo & (SetCRT2ToYPbPr525750|SetCRT2ToAVIDEO|SetCRT2ToSVIDEO|SetCRT2ToSCART)) {

	 checkmask |= SupportTV;
	 if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
	    checkmask |= SupportTV1024;
	    if(SiS_Pr->SiS_VBInfo & SetCRT2ToYPbPr525750) {
	       if(SiS_Pr->SiS_TVMode & TVSetYPbPr750p) {
	          checkmask |= SupportYPbPr750p;
	       }
	    }
	 }

      }

   } else {	/* LVDS */

      if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
	 if(SiS_Pr->SiS_VBInfo & SetCRT2ToTV) {
	    checkmask |= SupportCHTV;
	 }
      }

      if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCD) {
	 checkmask |= SupportLCD;
      }

   }

   /* Look backwards in table for matching CRT2 mode */
   for(; SiS_Pr->SiS_RefIndex[RRTI + (*i)].ModeID == modeid; (*i)--) {
      infoflag = SiS_Pr->SiS_RefIndex[RRTI + (*i)].Ext_InfoFlag;
      if(infoflag & checkmask) return TRUE;
      if((*i) == 0) break;
   }

   /* Look through the whole mode-section of the table from the beginning
    * for a matching CRT2 mode if no mode was found yet.
    */
   for((*i) = 0; ; (*i)++) {
      if(SiS_Pr->SiS_RefIndex[RRTI + (*i)].ModeID != modeid) break;
      infoflag = SiS_Pr->SiS_RefIndex[RRTI + (*i)].Ext_InfoFlag;
      if(infoflag & checkmask) return TRUE;
   }
   return FALSE;
}

/*********************************************/
/*              Get rate index               */
/*********************************************/

unsigned short
SiS_GetRatePtr(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
{
   unsigned short RRTI,i,backup_i;
   unsigned short modeflag,index,temp,backupindex;
   static const unsigned short LCDRefreshIndex[] = {
		0x00, 0x00, 0x01, 0x01,
		0x01, 0x01, 0x01, 0x01,
		0x01, 0x01, 0x01, 0x01,
		0x01, 0x01, 0x01, 0x01,
		0x00, 0x00, 0x00, 0x00
   };

   /* Do NOT check for UseCustomMode here, will skrew up FIFO */
   if(ModeNo == 0xfe) return 0;

   if(ModeNo <= 0x13) {
      modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
   } else {
      modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
   }

   if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
      if(SiS_Pr->SiS_VBInfo & SetCRT2ToTV) {
	 if(modeflag & HalfDCLK) return 0;
      }
   }

   if(ModeNo < 0x14) return 0xFFFF;

   index = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x33) >> SiS_Pr->SiS_SelectCRT2Rate) & 0x0F;
   backupindex = index;

   if(index > 0) index--;

   if(SiS_Pr->SiS_SetFlag & ProgrammingCRT2) {
      if(SiS_Pr->SiS_VBType & VB_SISVB) {
	 if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCD) {
	    if(SiS_Pr->SiS_VBType & VB_NoLCD)		 index = 0;
	    else if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) index = backupindex = 0;
	 }
	 if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToLCDA)) {
	    if(!(SiS_Pr->SiS_VBType & VB_NoLCD)) {
	       temp = LCDRefreshIndex[SiS_GetBIOSLCDResInfo(SiS_Pr)];
	       if(index > temp) index = temp;
	    }
	 }
      } else {
	 if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToLCDA)) index = 0;
	 if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
	    if(SiS_Pr->SiS_VBInfo & SetCRT2ToTV) index = 0;
	 }
      }
   }

   RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
   ModeNo = SiS_Pr->SiS_RefIndex[RRTI].ModeID;

   if(SiS_Pr->ChipType >= SIS_315H) {
      if(!(SiS_Pr->SiS_VBInfo & DriverMode)) {
	 if( (SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_VESAID == 0x105) ||
	     (SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_VESAID == 0x107) ) {
	    if(backupindex <= 1) RRTI++;
	 }
      }
   }

   i = 0;
   do {
      if(SiS_Pr->SiS_RefIndex[RRTI + i].ModeID != ModeNo) break;
      temp = SiS_Pr->SiS_RefIndex[RRTI + i].Ext_InfoFlag;
      temp &= ModeTypeMask;
      if(temp < SiS_Pr->SiS_ModeType) break;
      i++;
      index--;
   } while(index != 0xFFFF);

   if(!(SiS_Pr->SiS_VBInfo & SetCRT2ToRAMDAC)) {
      if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) {
	 temp = SiS_Pr->SiS_RefIndex[RRTI + i - 1].Ext_InfoFlag;
	 if(temp & InterlaceMode) i++;
      }
   }

   i--;

   if((SiS_Pr->SiS_SetFlag & ProgrammingCRT2) && (!(SiS_Pr->SiS_VBInfo & DisableCRT2Display))) {
      backup_i = i;
      if(!(SiS_AdjustCRT2Rate(SiS_Pr, ModeNo, ModeIdIndex, RRTI, &i))) {
	 i = backup_i;
      }
   }

   return (RRTI + i);
}

/*********************************************/
/*            STORE CRT2 INFO in CR34        */
/*********************************************/

static void
SiS_SaveCRT2Info(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
{
   unsigned short temp1, temp2;

   /* Store CRT1 ModeNo in CR34 */
   SiS_SetReg(SiS_Pr->SiS_P3d4,0x34,ModeNo);
   temp1 = (SiS_Pr->SiS_VBInfo & SetInSlaveMode) >> 8;
   temp2 = ~(SetInSlaveMode >> 8);
   SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x31,temp2,temp1);
}

/*********************************************/
/*    HELPER: GET SOME DATA FROM BIOS ROM    */
/*********************************************/

#ifdef SIS300
static BOOLEAN
SiS_CR36BIOSWord23b(struct SiS_Private *SiS_Pr)
{
   unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
   unsigned short temp,temp1;

   if(SiS_Pr->SiS_UseROM) {
      if((ROMAddr[0x233] == 0x12) && (ROMAddr[0x234] == 0x34)) {
	 temp = 1 << ((SiS_GetReg(SiS_Pr->SiS_P3d4,0x36) >> 4) & 0x0f);
	 temp1 = SISGETROMW(0x23b);
	 if(temp1 & temp) return TRUE;
      }
   }
   return FALSE;
}