From fa27a1147d55f79cd57daeef45eb5344181e7db8 Mon Sep 17 00:00:00 2001
From: "Enrico Weigelt, metux IT consult" <info@metux.net>
Date: Wed, 17 Dec 2025 14:09:26 +0100
Subject: [PATCH] drop ancient READOUT code pathes

The symbol isn't defined anymore for over two decades now, so
no need to keep these ancient and never compiled code pathes.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
---
 src/trident.h     |  3 ---
 src/trident_dac.c | 37 -------------------------------------
 src/trident_pll.c | 34 ----------------------------------
 3 files changed, 74 deletions(-)

diff --git a/src/trident.h b/src/trident.h
index 4f34588..1335bd6 100644
--- a/src/trident.h
+++ b/src/trident.h
@@ -148,9 +148,6 @@ typedef struct {
     int                 lcdMode;
     Bool                lcdActive;
     Bool                doInit;
-#ifdef READOUT
-    Bool                DontSetClock;
-#endif
     TRIDENTRegRec	SavedReg;
     TRIDENTRegRec	ModeReg;
     I2CBusPtr		DDC;
diff --git a/src/trident_dac.c b/src/trident_dac.c
index 1cf3dd4..23db597 100644
--- a/src/trident_dac.c
+++ b/src/trident_dac.c
@@ -270,14 +270,7 @@ TridentInit(ScrnInfoPtr pScrn, DisplayModePtr mode)
 
     if (pTrident->IsCyber) {
 	Bool LCDActive;
-#ifdef READOUT
-	Bool ShadowModeActive;
-#endif
 	int i = pTrident->lcdMode;
-#ifdef READOUT
-	OUTB(0x3CE, CyberControl);
-	ShadowModeActive = ((INB(0x3CF) & 0x81) == 0x81);
-#endif
 	OUTB(0x3CE, FPConfig);
 	pReg->tridentRegs3CE[FPConfig] = INB(0x3CF);
 	if (pTrident->dspOverride) {
@@ -321,27 +314,6 @@ TridentInit(ScrnInfoPtr pScrn, DisplayModePtr mode)
 	OUTB(0x3CE,VertStretch);
 	pReg->tridentRegs3CE[VertStretch] = INB(0x3CF);
 
-#ifdef READOUT
-	if ((!((pReg->tridentRegs3CE[VertStretch] & 1) ||
-	       (pReg->tridentRegs3CE[HorStretch] & 1)))
-	    && (!LCDActive || ShadowModeActive)) 
-	  {
-	    unsigned char tmp;
-	    
-	    SHADOW_ENABLE(tmp);
-	    OUTB(vgaIOBase + 4,0);
-	    pReg->tridentRegs3x4[0x0] = INB(vgaIOBase + 5);
-	    OUTB(vgaIOBase + 4,3);
-	    pReg->tridentRegs3x4[0x3] = INB(vgaIOBase + 5);
-	    OUTB(vgaIOBase + 4,4);
-	    pReg->tridentRegs3x4[0x4] = INB(vgaIOBase + 5);
-	    OUTB(vgaIOBase + 4,5);
-  	    pReg->tridentRegs3x4[0x5] = INB(vgaIOBase + 5);
-  	    OUTB(vgaIOBase + 4,0x6);
-  	    pReg->tridentRegs3x4[0x6] = INB(vgaIOBase + 5);
-  	    SHADOW_RESTORE(tmp);
- 	} else
-#endif
  	{
  	    if (i != 0xff) {
   		pReg->tridentRegs3x4[0x0] = LCD[i].shadow_0;
@@ -867,9 +839,6 @@ TridentRestore(ScrnInfoPtr pScrn, TRIDENTRegPtr tridentReg)
     }
  
     if (Is3Dchip) {
-#ifdef READOUT
-	if (!pTrident->DontSetClock)
-#endif
 	{
 	    OUTW(0x3C4, (tridentReg->tridentRegsClock[0x01])<<8 | ClockLow);
 	    OUTW(0x3C4, (tridentReg->tridentRegsClock[0x02])<<8 | ClockHigh);
@@ -879,9 +848,6 @@ TridentRestore(ScrnInfoPtr pScrn, TRIDENTRegPtr tridentReg)
 	    OUTW(0x3C4,(tridentReg->tridentRegsClock[0x04])<<8 | MCLKHigh);
 	}
     } else {
-#ifdef READOUT
-	if (!pTrident->DontSetClock)
-#endif
 	{
 	    OUTB(0x43C8, tridentReg->tridentRegsClock[0x01]);
 	    OUTB(0x43C9, tridentReg->tridentRegsClock[0x02]);
@@ -891,9 +857,6 @@ TridentRestore(ScrnInfoPtr pScrn, TRIDENTRegPtr tridentReg)
 	    OUTB(0x43C7, tridentReg->tridentRegsClock[0x04]);
 	}
     }
-#ifdef READOUT
-    if (!pTrident->DontSetClock)
-#endif
     {
 	OUTB(0x3C2, tridentReg->tridentRegsClock[0x00]);
     }
diff --git a/src/trident_pll.c b/src/trident_pll.c
index f029b66..cc796c0 100644
--- a/src/trident_pll.c
+++ b/src/trident_pll.c
@@ -143,44 +143,12 @@ TridentFindClock(ScrnInfoPtr pScrn, int clock)
     TRIDENTPtr pTrident = TRIDENTPTR(pScrn);
 
     pTrident->MUX = FALSE;
-#ifdef READOUT
-    pTrident->DontSetClock = FALSE;
-#endif
     pTrident->currentClock = clock;
 
     if (pTrident->IsCyber) {
         Bool LCDActive;
-#ifdef READOUT
-        Bool ShadowModeActive;
-        Bool HStretch;
-        Bool VStretch;
-#endif
         OUTB(0x3CE, FPConfig);
         LCDActive = (INB(0x3CF) & 0x10);
-#ifdef READOUT
-        OUTB(0x3CE, HorStretch);
-        HStretch = (INB(0x3CF) & 0x01);
-        OUTB(0x3CE, VertStretch);
-        VStretch = (INB(0x3CF) & 0x01);
-
-        if (!(VStretch || HStretch) && LCDActive) {
-            CARD8 temp;
-            temp = INB(0x3C8);
-            temp = INB(0x3C6);
-            temp = INB(0x3C6);
-            temp = INB(0x3C6);
-            temp = INB(0x3C6);
-            pTrident->MUX = ((INB(0x3C6) & 0x20) == 0x20);
-            temp = INB(0x3C8);
-            pTrident->DontSetClock = TRUE;
-            xf86DrvMsg(pScrn->scrnIndex, X_INFO,
-                        "Keeping Clock for LCD Mode\n");
-            xf86DrvMsg(pScrn->scrnIndex, X_INFO,
-                        "MUX is %s\n",
-                        pTrident->MUX ? "on" : "off");
-            return;
-        } else
-#endif
         {
             if (pTrident->lcdMode != 0xff && LCDActive)
                 pTrident->currentClock = clock =
@@ -188,13 +156,11 @@ TridentFindClock(ScrnInfoPtr pScrn, int clock)
         }
 
     } 
-#ifndef READOUT
     if (pTrident->Chipset != BLADEXP &&
         clock > pTrident->MUXThreshold)
         pTrident->MUX = TRUE;
     else  
         pTrident->MUX = FALSE;
-#endif
 }
 
 float