From fc8bd5bde48424e47020eae179c8b331ff69595a Mon Sep 17 00:00:00 2001
From: Alex Deucher <agd5f@yahoo.com>
Date: Sat, 18 Sep 2004 13:37:30 +0000
Subject: Re-add BIOS panel off code for dpms (Felix Kuehling) Fix weird mode
 problem     on savage4 with dvi and some panels (Felix Kuehling)

---
 src/savage_driver.c  | 32 ++++++++++++++++++--------------
 src/savage_driver.h  |  1 +
 src/savage_streams.h |  2 +-
 src/savage_vbe.c     | 17 +++++++++++++++++
 4 files changed, 37 insertions(+), 15 deletions(-)

diff --git a/src/savage_driver.c b/src/savage_driver.c
index 226fbb6..afc890e 100644
--- a/src/savage_driver.c
+++ b/src/savage_driver.c
@@ -3823,20 +3823,24 @@ static void SavageDPMS(ScrnInfoPtr pScrn, int mode, int flags)
     }
  
     if ((!psav->CrtOnly) && psav->PanelX) {
-    	switch (mode) {
-	    case DPMSModeOn:
-		VGAOUT8(0x3c4, 0x31); /* SR31 bit 4 - FP enable */
-		VGAOUT8(0x3c5, VGAIN8(0x3c5) | 0x10);
-	        break;
-	    case DPMSModeStandby:
-	    case DPMSModeSuspend:
-	    case DPMSModeOff:
-		VGAOUT8(0x3c4, 0x31); /* SR31 bit 4 - FP enable */
-		VGAOUT8(0x3c5, VGAIN8(0x3c5) & ~0x10);
-	        break;
-	    default:
-	        xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Invalid DPMS mode %d\n", mode);
-	        break;
+	if (S3_MOBILE_TWISTER_SERIES(psav->Chipset)) {
+	    SavageSetPanelEnabled(psav, (mode == DPMSModeOn));
+	} else {
+    	    switch (mode) {
+	        case DPMSModeOn:
+		    VGAOUT8(0x3c4, 0x31); /* SR31 bit 4 - FP enable */
+		    VGAOUT8(0x3c5, VGAIN8(0x3c5) | 0x10);
+	            break;
+	        case DPMSModeStandby:
+	        case DPMSModeSuspend:
+	        case DPMSModeOff:
+		    VGAOUT8(0x3c4, 0x31); /* SR31 bit 4 - FP enable */
+		    VGAOUT8(0x3c5, VGAIN8(0x3c5) & ~0x10);
+	            break;
+	        default:
+	            xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Invalid DPMS mode %d\n", mode);
+	            break;
+	    }
         }
     }
 
diff --git a/src/savage_driver.h b/src/savage_driver.h
index ca7856e..330c896 100644
--- a/src/savage_driver.h
+++ b/src/savage_driver.h
@@ -452,6 +452,7 @@ void SavageRefreshArea32(ScrnInfoPtr pScrn, int num, BoxPtr pbox);
 
 void SavageSetTextMode( SavagePtr psav );
 void SavageSetVESAMode( SavagePtr psav, int n, int Refresh );
+void SavageSetPanelEnabled( SavagePtr psav, Bool active );
 void SavageFreeBIOSModeTable( SavagePtr psav, SavageModeTablePtr* ppTable );
 SavageModeTablePtr SavageGetBIOSModeTable( SavagePtr psav, int iDepth );
 
diff --git a/src/savage_streams.h b/src/savage_streams.h
index 12fbd7d..2799ca5 100644
--- a/src/savage_streams.h
+++ b/src/savage_streams.h
@@ -71,7 +71,7 @@
 #define SSTREAM_FBSIZE_REG		0x8304
 #define SSTREAM_FBADDR2_REG		0x8308
 
-#define OS_XY(x,y)	(((x+1)<<16)|(y+1))
+#define OS_XY(x,y)	(((x)<<16)|(y+1)) /*(((x+1)<<16)|(y+1))*/
 #define OS_WH(x,y)	(((x-1)<<16)|(y))
 
 /* Streams Processor macros */
diff --git a/src/savage_vbe.c b/src/savage_vbe.c
index 25e64da..a796850 100644
--- a/src/savage_vbe.c
+++ b/src/savage_vbe.c
@@ -122,6 +122,23 @@ SavageSetVESAMode( SavagePtr psav, int n, int Refresh )
 #endif
 }
 
+void
+SavageSetPanelEnabled( SavagePtr psav, Bool active )
+{
+    int iDevInfo;
+    if( !psav->PanelX )
+	return; /* no panel */
+    iDevInfo = SavageGetDevice( psav );
+    if( active )
+	iDevInfo |= LCD_ACTIVE;
+    else
+	iDevInfo &= ~LCD_ACTIVE;
+    SavageClearVM86Regs( psav->pVbe->pInt10 );
+    psav->pVbe->pInt10->ax = 0x4f14;	/* S3 extensions */
+    psav->pVbe->pInt10->bx = 0x0003;	/* set active devices */
+    psav->pVbe->pInt10->cx = iDevInfo;
+    xf86ExecX86int10( psav->pVbe->pInt10 );
+}
 
 /* Function to get supported device list. */
 
-- 
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