From 578938f1cdd5a06dd6fa28167d575ec980322a5d Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Mon, 16 Nov 2009 13:46:01 +0000
Subject: Update to git master branch of xserver.

---
 xorg-server/hw/xfree86/modes/xf86Modes.c | 42 +++++++++++++++++++++++++++++---
 1 file changed, 39 insertions(+), 3 deletions(-)

(limited to 'xorg-server/hw/xfree86/modes/xf86Modes.c')

diff --git a/xorg-server/hw/xfree86/modes/xf86Modes.c b/xorg-server/hw/xfree86/modes/xf86Modes.c
index d105b48ab..75aedaa99 100644
--- a/xorg-server/hw/xfree86/modes/xf86Modes.c
+++ b/xorg-server/hw/xfree86/modes/xf86Modes.c
@@ -136,10 +136,12 @@ xf86ModeBandwidth(DisplayModePtr mode, int depth)
 void
 xf86SetModeDefaultName(DisplayModePtr mode)
 {
-    if (mode->name != NULL)
-	xfree(mode->name);
+    Bool interlaced = !!(mode->Flags & V_INTERLACE);
 
-    mode->name = XNFprintf("%dx%d", mode->HDisplay, mode->VDisplay);
+    xfree(mode->name);
+
+    mode->name = XNFprintf("%dx%d%s", mode->HDisplay, mode->VDisplay,
+			   interlaced ? "i" : "");
 }
 
 /*
@@ -689,3 +691,37 @@ xf86GetDefaultModes (void)
     }
     return head;
 }
+
+/*
+ * Walk a mode list and prune out duplicates.  Will preserve the preferred
+ * mode of an otherwise-duplicate pair.
+ *
+ * Probably best to call this on lists that are all of a single class
+ * (driver, default, user, etc.), otherwise, which mode gets deleted is
+ * not especially well defined.
+ *
+ * Returns the new list.
+ */
+
+DisplayModePtr
+xf86PruneDuplicateModes(DisplayModePtr modes)
+{
+    DisplayModePtr m, n, o;
+
+top:
+    for (m = modes; m; m = m->next) {
+	for (n = m->next; n; n = o) {
+	    o = n->next;
+	    if (xf86ModesEqual(m, n)) {
+		if (n->type & M_T_PREFERRED) {
+		    xf86DeleteMode(&modes, m);
+		    goto top;
+		}
+		else
+		    xf86DeleteMode(&modes, n);
+	    }
+	}
+    }
+
+    return modes;
+}
-- 
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