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|
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* All drivers should typically include these */
#include "xf86.h"
#include "xf86_OSproc.h"
/* Drivers that need to access the PCI config space directly need this */
#include "xf86Pci.h"
#include "mga_reg.h"
#include "mga.h"
#define MNP_TABLE_SIZE 64
#define CLKSEL_MGA 0x0c
#define PLLLOCK 0x40
static CARD32 G450ApplyPFactor(ScrnInfoPtr pScrn, CARD8 ucP, CARD32 *pulFIn)
{
if(!(ucP & 0x40))
{
*pulFIn = *pulFIn / (2L << (ucP & 3));
}
return TRUE;
}
static CARD32 G450RemovePFactor(ScrnInfoPtr pScrn, CARD8 ucP, CARD32 *pulFIn)
{
if(!(ucP & 0x40))
{
*pulFIn = *pulFIn * (2L << (ucP & 3));
}
return TRUE;
}
static CARD32 G450CalculVCO(ScrnInfoPtr pScrn, CARD32 ulMNP, CARD32 *pulF)
{
CARD8 ucM, ucN;
ucM = (CARD8)((ulMNP >> 16) & 0xff);
ucN = (CARD8)((ulMNP >> 8) & 0xff);
*pulF = (27000 * (2 * (ucN + 2)) + ((ucM + 1) >> 1)) / (ucM + 1);
return TRUE;
}
static CARD32 G450CalculDeltaFreq(ScrnInfoPtr pScrn, CARD32 ulF1,
CARD32 ulF2, CARD32 *pulDelta)
{
if(ulF2 < ulF1)
{
*pulDelta = ((ulF1 - ulF2) * 1000) / ulF1;
}
else
{
*pulDelta = ((ulF2 - ulF1) * 1000) / ulF1;
}
return TRUE;
}
static CARD32 G450FindNextPLLParam(ScrnInfoPtr pScrn, CARD32 ulFout,
CARD32 *pulPLLMNP)
{
CARD8 ucM, ucN, ucP, ucS;
CARD32 ulVCO, ulVCOMin;
ucM = (CARD8)((*pulPLLMNP >> 16) & 0xff);
ucN = (CARD8)((*pulPLLMNP >> 8) & 0xff);
ucP = (CARD8)(*pulPLLMNP & 0x43);
ulVCOMin = 256000;
if(ulVCOMin >= (255L * 8000))
{
ulVCOMin = 230000;
}
if((ucM == 9) && (ucP & 0x40))
{
*pulPLLMNP = 0xffffffff;
} else if (ucM == 9)
{
if(ucP)
{
ucP--;
}
else
{
ucP = 0x40;
}
ucM = 0;
}
else
{
ucM++;
}
ulVCO = ulFout;
G450RemovePFactor(pScrn, ucP, &ulVCO);
if(ulVCO < ulVCOMin)
{
*pulPLLMNP = 0xffffffff;
}
if(*pulPLLMNP != 0xffffffff)
{
ucN = (CARD8)(((ulVCO * (ucM+1) + 27000)/(27000 * 2)) - 2);
ucS = 5;
if(ulVCO < 1300000) ucS = 4;
if(ulVCO < 1100000) ucS = 3;
if(ulVCO < 900000) ucS = 2;
if(ulVCO < 700000) ucS = 1;
if(ulVCO < 550000) ucS = 0;
ucP |= (CARD8)(ucS << 3);
*pulPLLMNP &= 0xff000000;
*pulPLLMNP |= (CARD32)ucM << 16;
*pulPLLMNP |= (CARD32)ucN << 8;
*pulPLLMNP |= (CARD32)ucP;
#ifdef DEBUG
ErrorF("FINS_S: VCO = %d, S = %02X, *pulPLLMNP = %08X\n", (unsigned)ulVCO, (unsigned)ucS, (unsigned)*pulPLLMNP);
#endif
}
return TRUE;
}
static CARD32 G450FindFirstPLLParam(ScrnInfoPtr pScrn, CARD32 ulFout,
CARD32 *pulPLLMNP)
{
CARD8 ucP;
CARD32 ulVCO;
CARD32 ulVCOMax;
/* Default value */
ulVCOMax = 1300000;
if(ulFout > (ulVCOMax/2))
{
ucP = 0x40;
ulVCO = ulFout;
}
else
{
ucP = 3;
ulVCO = ulFout;
G450RemovePFactor(pScrn, ucP, &ulVCO);
while(ucP && (ulVCO > ulVCOMax))
{
ucP--;
ulVCO = ulFout;
G450RemovePFactor(pScrn, ucP, &ulVCO);
}
}
if(ulVCO > ulVCOMax)
{
*pulPLLMNP = 0xffffffff;
}
else
{
/* Pixel clock: 1 */
*pulPLLMNP = (1 << 24) + 0xff0000 + ucP;
G450FindNextPLLParam(pScrn, ulFout, pulPLLMNP);
}
return TRUE;
}
static CARD32 G450WriteMNP(ScrnInfoPtr pScrn, CARD32 ulMNP)
{
MGAPtr pMga = MGAPTR(pScrn);
if (!pMga->SecondCrtc) {
outMGAdac(MGA1064_PIX_PLLC_M, (CARD8)(ulMNP >> 16));
outMGAdac(MGA1064_PIX_PLLC_N, (CARD8)(ulMNP >> 8));
outMGAdac(MGA1064_PIX_PLLC_P, (CARD8) ulMNP);
} else {
outMGAdac(MGA1064_VID_PLL_M, (CARD8)(ulMNP >> 16));
outMGAdac(MGA1064_VID_PLL_N, (CARD8)(ulMNP >> 8));
outMGAdac(MGA1064_VID_PLL_P, (CARD8) ulMNP);
}
return TRUE;
}
static CARD32 G450ReadMNP(ScrnInfoPtr pScrn)
{
MGAPtr pMga = MGAPTR(pScrn);
CARD32 ret = 0;
if (!pMga->SecondCrtc) {
ret = (CARD8)inMGAdac(MGA1064_PIX_PLLC_M) << 16;
ret |= (CARD8)inMGAdac(MGA1064_PIX_PLLC_N) << 8;
ret |= (CARD8)inMGAdac(MGA1064_PIX_PLLC_P);
} else {
ret = (CARD8)inMGAdac(MGA1064_VID_PLL_M) << 16;
ret |= (CARD8)inMGAdac(MGA1064_VID_PLL_N) << 8;
ret |= (CARD8)inMGAdac(MGA1064_VID_PLL_P);
}
return ret;
}
static CARD32 G450CompareMNP(ScrnInfoPtr pScrn, CARD32 ulFout, CARD32 ulMNP1,
CARD32 ulMNP2, long *pulResult)
{
CARD32 ulFreq, ulDelta1, ulDelta2;
G450CalculVCO(pScrn, ulMNP1, &ulFreq);
G450ApplyPFactor(pScrn, (CARD8) ulMNP1, &ulFreq);
G450CalculDeltaFreq(pScrn, ulFout, ulFreq, &ulDelta1);
G450CalculVCO(pScrn, ulMNP2, &ulFreq);
G450ApplyPFactor(pScrn, (CARD8) ulMNP2, &ulFreq);
G450CalculDeltaFreq(pScrn, ulFout, ulFreq, &ulDelta2);
if(ulDelta1 < ulDelta2)
{
*pulResult = -1;
}
else if(ulDelta1 > ulDelta2)
{
*pulResult = 1;
}
else
{
*pulResult = 0;
}
if((ulDelta1 <= 5) && (ulDelta2 <= 5))
{
if((ulMNP1 & 0xff0000) < (ulMNP2 & 0xff0000))
{
*pulResult = -1;
}
else if((ulMNP1 & 0xff0000) > (ulMNP2 & 0xff0000))
{
*pulResult = 1;
}
}
return TRUE;
}
static CARD32 G450IsPllLocked(ScrnInfoPtr pScrn, Bool *lpbLocked)
{
CARD32 ulFallBackCounter, ulLockCount, ulCount;
CARD8 ucPLLStatus;
MGAPtr pMga = MGAPTR(pScrn);
if (!pMga->SecondCrtc)
OUTREG8(0x3c00, MGA1064_PIX_PLL_STAT);
else
OUTREG8(0x3c00, MGA1064_VID_PLL_STAT);
ulFallBackCounter = 0;
do
{
ucPLLStatus = INREG8(0x3c0a);
ulFallBackCounter++;
} while(!(ucPLLStatus & PLLLOCK) && (ulFallBackCounter < 1000));
ulLockCount = 0;
if(ulFallBackCounter < 1000)
{
for(ulCount = 0; ulCount < 100; ulCount++)
{
ucPLLStatus = INREG8(0x3c0a);
if(ucPLLStatus & PLLLOCK)
{
ulLockCount++;
}
}
}
*lpbLocked = ulLockCount >= 90;
return TRUE;
}
double MGAG450SetPLLFreq(ScrnInfoPtr pScrn, long f_out)
{
Bool bFoundValidPLL;
Bool bLocked;
CARD8 ucMisc, ucSIndex, ucSTable[4];
CARD32 ulMaxIndex;
CARD32 ulMNP;
CARD32 ulMNPTable[MNP_TABLE_SIZE];
CARD32 ulIndex;
CARD32 ulTryMNP;
long lCompareResult;
MGAPtr pMga = MGAPTR(pScrn);
#ifdef DEBUG
xf86DrvMsg(pScrn->scrnIndex,X_INFO, "Restoring PLLClk = %ld\n", f_out);
#endif
G450FindFirstPLLParam(pScrn, f_out, &ulMNP);
ulMNPTable[0] = ulMNP;
G450FindNextPLLParam(pScrn, f_out, &ulMNP);
ulMaxIndex = 1;
while(ulMNP != 0xffffffff)
{
int ulIndex;
Bool bSkipValue;
bSkipValue = FALSE;
if(ulMaxIndex == MNP_TABLE_SIZE)
{
G450CompareMNP(pScrn, f_out, ulMNP, ulMNPTable[MNP_TABLE_SIZE - 1],
&lCompareResult);
if(lCompareResult > 0)
{
bSkipValue = TRUE;
}
else
{
ulMaxIndex--;
}
}
if(!bSkipValue)
{
for(ulIndex = ulMaxIndex; !bSkipValue && (ulIndex > 0); ulIndex--)
{
G450CompareMNP(pScrn, f_out, ulMNP, ulMNPTable[ulIndex - 1],
&lCompareResult);
if(lCompareResult < 0)
{
ulMNPTable[ulIndex] = ulMNPTable[ulIndex - 1];
}
else
{
break;
}
}
ulMNPTable[ulIndex] = ulMNP;
ulMaxIndex++;
}
G450FindNextPLLParam(pScrn, f_out, &ulMNP);
}
bFoundValidPLL = FALSE;
ulMNP = 0;
/* For pixel pll */
if (!pMga->SecondCrtc) {
ucMisc = INREG8(0x1FCC);
OUTREG8(0x1fc2, (CARD8)(ucMisc | CLKSEL_MGA));
}
for(ulIndex = 0; !bFoundValidPLL && (ulIndex < ulMaxIndex); ulIndex++)
{
ulTryMNP = ulMNPTable[ulIndex];
ucSTable[3] = 0xff;
ucSTable[2] = 0xff;
ucSTable[0] = (CARD8) (ulTryMNP & 0x38);
if (ucSTable[0] != 0) {
ucSTable[1] = ucSTable[0] - 8;
if (ucSTable[0] != 0x38) {
ucSTable[2] = ucSTable[0] + 8;
}
} else {
ucSTable[1] = 8;
}
for(ucSIndex = 0; !bFoundValidPLL && (ucSTable[ucSIndex] != 0xff);
ucSIndex++) {
ulTryMNP &= 0xffffffc7;
ulTryMNP |= (CARD32)ucSTable[ucSIndex];
bLocked = TRUE;
if((ulMNPTable[ulIndex] & 0xff00) < 0x300 ||
(ulMNPTable[ulIndex] & 0xff00) > 0x7a00)
{
bLocked = FALSE;
}
if(bLocked)
{
G450WriteMNP(pScrn, ulTryMNP - 0x300);
G450IsPllLocked(pScrn, &bLocked);
}
if(bLocked)
{
G450WriteMNP(pScrn, ulTryMNP + 0x300);
G450IsPllLocked(pScrn, &bLocked);
}
if(bLocked)
{
G450WriteMNP(pScrn, ulTryMNP - 0x200);
G450IsPllLocked(pScrn, &bLocked);
}
if(bLocked)
{
G450WriteMNP(pScrn, ulTryMNP + 0x200);
G450IsPllLocked(pScrn, &bLocked);
}
if(bLocked)
{
G450WriteMNP(pScrn, ulTryMNP - 0x100);
G450IsPllLocked(pScrn, &bLocked);
}
if(bLocked)
{
G450WriteMNP(pScrn, ulTryMNP + 0x100);
G450IsPllLocked(pScrn, &bLocked);
}
if(bLocked)
{
G450WriteMNP(pScrn, ulTryMNP);
G450IsPllLocked(pScrn, &bLocked);
}
else if(!ulMNP)
{
G450WriteMNP(pScrn, ulTryMNP);
G450IsPllLocked(pScrn, &bLocked);
if(bLocked)
{
ulMNP = ulMNPTable[ulIndex];
}
bLocked = FALSE;
}
if(bLocked)
{
bFoundValidPLL = TRUE;
}
}
}
if(!bFoundValidPLL)
{
if(ulMNP)
{
G450WriteMNP(pScrn, ulMNP);
}
else
{
G450WriteMNP(pScrn, ulMNPTable[0]);
}
}
return TRUE;
}
long
MGAG450SavePLLFreq(ScrnInfoPtr pScrn)
{
CARD32 ulMNP = G450ReadMNP(pScrn);
CARD8 ucP;
CARD32 freq;
G450CalculVCO(pScrn, ulMNP, &freq);
ucP = (CARD8)(ulMNP & 0x03);
G450ApplyPFactor(pScrn, ucP, &freq);
#ifdef DEBUG
xf86DrvMsg(pScrn->scrnIndex,X_INFO,"Saved PLLClk = %u\n", (unsigned)freq);
#endif
return freq;
}
#ifdef DEBUG
void
MGAG450PrintPLL(ScrnInfoPtr pScrn)
{
CARD32 ulMNP = G450ReadMNP(pScrn);
CARD8 ucP;
CARD32 freq;
G450CalculVCO(pScrn, ulMNP, &freq);
ucP = (CARD8)(ulMNP & 0x03);
G450ApplyPFactor(pScrn, ucP, &freq);
xf86DrvMsg(pScrn->scrnIndex,X_INFO,"MGAGClock = %u -- MNP = 0x%x\n",
(unsigned)freq, (unsigned)ulMNP);
}
#endif
|
