Add support for on-the-fly screen rotation when supported by hardware (Aron

Plattner).

hw/xfree86/common/xf86Cursor.c

@@ -222,7 +222,7 @@ xf86SwitchMode(ScreenPtr pScreen, DisplayModePtr mode)
   if (mode == pScr->currentMode)
     return TRUE;
 
-  if (mode->HDisplay > pScreen->width || mode->VDisplay > pScreen->height)
+  if (mode->HDisplay > pScr->virtualX || mode->VDisplay > pScr->virtualY)
     return FALSE;
 
   pCursorScreen = miPointerCurrentScreen();

hw/xfree86/common/xf86Init.c

@@ -902,6 +902,8 @@ InitOutput(ScreenInfo *pScreenInfo, int argc, char **argv)
 	xf86Screens[i]->DPMSSet = NULL;
 	xf86Screens[i]->LoadPalette = NULL; 
 	xf86Screens[i]->SetOverscan = NULL;
+	xf86Screens[i]->RRGetInfo = NULL;
+	xf86Screens[i]->RRSetConfig = NULL;
 	scr_index = AddScreen(xf86Screens[i]->ScreenInit, argc, argv);
       if (scr_index == i) {
 	/*

hw/xfree86/common/xf86RandR.c

@@ -1,4 +1,4 @@
-/* $XdotOrg$ */
+/* $XdotOrg: xc/programs/Xserver/hw/xfree86/common/xf86RandR.c,v 1.2 2004/04/23 19:20:32 eich Exp $ */
 /*
  * $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86RandR.c,v 1.7tsi Exp $
  *
@@ -38,6 +38,7 @@ typedef struct _xf86RandRInfo {
     CloseScreenProcPtr		    CloseScreen;
     int				    virtualX;
     int				    virtualY;
+    Rotation			    rotation;
 } XF86RandRInfoRec, *XF86RandRInfoPtr;
     
 static int	    xf86RandRIndex;
@@ -77,8 +78,8 @@ xf86RandRGetInfo (ScreenPtr pScreen, Rotation *rotations)
 	    return FALSE;
 	RRRegisterRate (pScreen, pSize, refresh);
 	if (mode == scrp->currentMode &&
-	    mode->HDisplay == pScreen->width && mode->VDisplay == pScreen->height)
+	    mode->HDisplay == scrp->virtualX && mode->VDisplay == scrp->virtualY)
-	    RRSetCurrentConfig (pScreen, RR_Rotate_0, refresh, pSize);
+	    RRSetCurrentConfig (pScreen, randrp->rotation, refresh, pSize);
 	if (mode->next == scrp->modes)
 	    break;
     }
@@ -93,12 +94,17 @@ xf86RandRGetInfo (ScreenPtr pScreen, Rotation *rotations)
 	if (!pSize)
 	    return FALSE;
 	RRRegisterRate (pScreen, pSize, refresh0);
-	if (pScreen->width == randrp->virtualX && 
+	if (scrp->virtualX == randrp->virtualX && 
-	    pScreen->height == randrp->virtualY)
+	    scrp->virtualY == randrp->virtualY)
 	{
-	    RRSetCurrentConfig (pScreen, RR_Rotate_0, refresh0, pSize);
+	    RRSetCurrentConfig (pScreen, randrp->rotation, refresh0, pSize);
 	}
     }
+
+    /* If there is driver support for randr, let it set our supported rotations */
+    if(scrp->RRGetInfo)
+	return (*scrp->RRGetInfo)(scrp, rotations);
+
     return TRUE;
 }
 
@@ -125,8 +131,17 @@ xf86RandRSetMode (ScreenPtr	    pScreen,
 	scrp->virtualX = mode->HDisplay;
 	scrp->virtualY = mode->VDisplay;
     }
-    pScreen->width = scrp->virtualX;
+    if(randrp->rotation & (RR_Rotate_90 | RR_Rotate_270))
-    pScreen->height = scrp->virtualY;
+    {
+	/* If the screen is rotated 90 or 270 degrees, swap the sizes. */
+	pScreen->width = scrp->virtualY;
+	pScreen->height = scrp->virtualX;
+    }
+    else
+    {
+	pScreen->width = scrp->virtualX;
+	pScreen->height = scrp->virtualY;
+    }
     if (!xf86SwitchMode (pScreen, mode))
     {
 	scrp->virtualX = pScreen->width = oldWidth;
@@ -160,6 +175,8 @@ xf86RandRSetConfig (ScreenPtr		pScreen,
     int			    px, py;
     Bool		    useVirtual = FALSE;
 
+    randrp->rotation = rotation;
+
     miPointerPosition (&px, &py);
     for (mode = scrp->modes; ; mode = mode->next)
     {
@@ -179,6 +196,12 @@ xf86RandRSetConfig (ScreenPtr		pScreen,
 	    return FALSE;
 	}
     }
+
+    /* Have the driver do its thing. */
+    if (scrp->RRSetConfig &&
+        !(*scrp->RRSetConfig)(scrp, rotation, rate, pSize->width, pSize->height))
+	return FALSE;
+
     if (!xf86RandRSetMode (pScreen, mode, useVirtual))
 	return FALSE;
     /*
@@ -189,6 +212,7 @@ xf86RandRSetConfig (ScreenPtr		pScreen,
 	if (px < pSize->width && py < pSize->height)
 	    (*pScreen->SetCursorPosition) (pScreen, px, py, FALSE);
     }
+
     return TRUE;
 }
 
@@ -277,6 +301,8 @@ xf86RandRInit (ScreenPtr    pScreen)
     randrp->CloseScreen = pScreen->CloseScreen;
     pScreen->CloseScreen = xf86RandRCloseScreen;
 
+    randrp->rotation = RR_Rotate_0;
+
     pScreen->devPrivates[xf86RandRIndex].ptr = randrp;
     return TRUE;
 }

hw/xfree86/common/xf86str.h

@@ -476,7 +476,7 @@ typedef struct _confdrirec {
 /* These values should be adjusted when new fields are added to ScrnInfoRec */
 #define NUM_RESERVED_INTS		16
 #define NUM_RESERVED_POINTERS		15
-#define NUM_RESERVED_FUNCS		12
+#define NUM_RESERVED_FUNCS		10
 
 typedef pointer (*funcPointer)(void);
 
@@ -767,6 +767,8 @@ typedef int  xf86HandleMessageProc     (int, const char*, const char*, char**);
 typedef void xf86DPMSSetProc		  (ScrnInfoPtr, int, int);
 typedef void xf86LoadPaletteProc   (ScrnInfoPtr, int, int *, LOCO *, VisualPtr);
 typedef void xf86SetOverscanProc          (ScrnInfoPtr, int);
+typedef Bool xf86RRGetInfoProc            (ScrnInfoPtr, unsigned short *);
+typedef Bool xf86RRSetConfigProc          (ScrnInfoPtr, int, int, int, int);
 
 /*
  * ScrnInfoRec
@@ -921,6 +923,8 @@ typedef struct _ScrnInfoRec {
     xf86DPMSSetProc			*DPMSSet;
     xf86LoadPaletteProc			*LoadPalette;
     xf86SetOverscanProc			*SetOverscan;
+    xf86RRGetInfoProc			*RRGetInfo;
+    xf86RRSetConfigProc			*RRSetConfig;
     
     /*
      * This can be used when the minor ABI version is incremented.