/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/sis/sis_vb.c,v 1.3 2001/04/19 12:40:33 alanh Exp $ */

#include "xf86.h"
#include "xf86_ansic.h"
#include "compiler.h"
#include "xf86PciInfo.h"

#include "sis.h"
#include "sis_regs.h"
#include "sis_vb.h"

void SISLCDPreInit(ScrnInfoPtr pScrn)
{
    SISPtr  pSiS = SISPTR(pScrn);
    int temp;

    
    if (!(pSiS->VBFlags & (VB_301|VB_302|VB_303|VB_LVDS|VB_CHRONTEL))) 
        return;

    inSISIDXREG(pSiS->RelIO+CROFFSET, 0x32, temp);
    if (temp & 0x08)
           pSiS->VBFlags |= CRT2_LCD;

    inSISIDXREG(pSiS->RelIO+CROFFSET, 0x36, temp);
    if (temp == 1)
        pSiS->VBFlags |= LCD_800x600;
    if (temp == 2)
        pSiS->VBFlags |= LCD_1024x768;
    if (temp == 3)
        pSiS->VBFlags |= LCD_1280x1024;
}

void SISTVPreInit(ScrnInfoPtr pScrn)
{
    SISPtr  pSiS = SISPTR(pScrn);
    int temp;

    if (!(pSiS->VBFlags & (VB_301|VB_302|VB_303|VB_LVDS|VB_CHRONTEL))) 
        return;

    inSISIDXREG(pSiS->RelIO+CROFFSET, 0x32, temp);
    if (temp & 0x04)
        pSiS->VBFlags |= (CRT2_TV | TV_SCART);
    else if (temp & 0x02)
        pSiS->VBFlags |= (CRT2_TV | TV_SVIDEO);
    else if (temp & 0x01)
        pSiS->VBFlags |= (CRT2_TV | TV_AVIDEO);
    else if (temp & 0x40)
        pSiS->VBFlags |= (CRT2_TV | TV_HIVISION);
        return;

    inSISIDXREG(pSiS->RelIO+CROFFSET, 0x31, temp);
    if (temp & 0x01)
        pSiS->VBFlags |= TV_PAL;
    else
        pSiS->VBFlags |= TV_NTSC;
}

void SISCRT2PreInit(ScrnInfoPtr pScrn)
{
    SISPtr  pSiS = SISPTR(pScrn);
    int temp;

    if (!(pSiS->VBFlags & (VB_301|VB_302|VB_303|VB_LVDS|VB_CHRONTEL))) 
        return;

    inSISIDXREG(pSiS->RelIO+CROFFSET, 0x32, temp);
    if (temp & 0x10)
           pSiS->VBFlags |= CRT2_VGA;
          
        return;

}