From 646a884c14429913eb74f860b9b614db9f17f13c Mon Sep 17 00:00:00 2001
From: Alexander Gottwald <alexander.gottwald@s1999.tu-chemnitz.de>
Date: Wed, 17 Mar 2004 20:30:45 +0000
Subject: merge with XORG-RELEASE-1 (tag XORG-CYGWIN-LAST-MERGE)

---
 src/mga_dacG.c | 29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

(limited to 'src/mga_dacG.c')

diff --git a/src/mga_dacG.c b/src/mga_dacG.c
index 842e75e..0a3a7e2 100644
--- a/src/mga_dacG.c
+++ b/src/mga_dacG.c
@@ -2,7 +2,7 @@
  * MGA-1064, MGA-G100, MGA-G200, MGA-G400, MGA-G550 RAMDAC driver
  */
 
-/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_dacG.c,v 1.54 2003/11/03 05:11:17 tsi Exp $ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_dacG.c,v 1.54tsi Exp $ */
 
 /*
  * This is a first cut at a non-accelerated version to work with the
@@ -548,6 +548,14 @@ MGAGInit(ScrnInfoPtr pScrn, DisplayModePtr mode)
             MGACRTC2GetPitch(pScrn, &ModeInfo); 
             MGACRTC2GetDisplayStart(pScrn, &ModeInfo,0,0,0);
         }
+
+#if X_BYTE_ORDER == X_BIG_ENDIAN
+	/* Disable byte-swapping for big-endian architectures - the XFree
+	   driver seems to like a little-endian framebuffer -ReneR */
+	/* pReg->Option |= 0x80000000; */
+	pReg->Option &= ~0x80000000;
+#endif
+
 	return(TRUE);
 }
 
@@ -670,6 +678,14 @@ MGAGRestore(ScrnInfoPtr pScrn, vgaRegPtr vgaReg, MGARegPtr mgaReg,
 	}
 
         if(!pMga->SecondCrtc) {
+           /* Do not set the memory config for primary cards as it
+              should be correct already. Only on little endian architectures
+              since we need to modify the byteswap bit. -ReneR */
+#if X_BYTE_ORDER == X_BIG_ENDIAN
+           optionMask = OPTION1_MASK;
+#else
+           optionMask = (pMga->Primary) ? OPTION1_MASK_PRIMARY : OPTION1_MASK;
+#endif
 
 MGA_NOT_HAL(
 	   /*
@@ -695,10 +711,6 @@ MGA_NOT_HAL(
 	      outMGAdac(i, mgaReg->DacRegs[i]);
 	   }
 	   
-	   /* Do not set the memory config for primary cards as it
-	      should be correct already */
-	   optionMask = (pMga->Primary) ? OPTION1_MASK_PRIMARY : OPTION1_MASK; 
-	   
 	   if (!MGAISGx50(pMga)) {
 	      /* restore pci_option register */
 	      pciSetBitsLong(pMga->PciTag, PCI_OPTION_REG, optionMask,
@@ -939,6 +951,7 @@ MGAGSetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
     MGAPtr pMga = MGAPTR(pScrn);
     x += 64;
     y += 64;
+
 #ifdef USEMGAHAL
     MGA_HAL(
 	    x += pMga->HALGranularityOffX;
@@ -1033,7 +1046,8 @@ MGAG_ddc1Read(ScrnInfoPtr pScrn)
 static void
 MGAG_I2CGetBits(I2CBusPtr b, int *clock, int *data) 
 {
-  MGAPtr pMga = MGAPTR(xf86Screens[b->scrnIndex]);
+  ScrnInfoPtr pScrn = xf86Screens[b->scrnIndex];
+  MGAPtr pMga = MGAPTR(pScrn);
   unsigned char val;
   
    /* Get the result. */
@@ -1054,7 +1068,8 @@ MGAG_I2CGetBits(I2CBusPtr b, int *clock, int *data)
 static void
 MGAG_I2CPutBits(I2CBusPtr b, int clock, int data)
 {
-  MGAPtr pMga = MGAPTR(xf86Screens[b->scrnIndex]);
+  ScrnInfoPtr pScrn = xf86Screens[b->scrnIndex]; 
+  MGAPtr pMga = MGAPTR(pScrn);
   unsigned char drv, val;
 
   val = (clock ? DDC_SCL_MASK : 0) | (data ? DDC_SDA_MASK : 0);
-- 
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