xf86-video-intel: Branch 'modesetting' - src/i830_xf86Modes.c

[Eric Anholt]

 src/i830_xf86Modes.c |   39 ---------------------------------------
 1 files changed, 39 deletions(-)

New commits:
diff-tree 89ace3e81fe72075b1709b073c05532f13b7f0d1 (from 6eb69e737864d06dc6d4fbb4cd85a027cbb7643a)
Author: Eric Anholt <eric at anholt.net>
Date:   Mon Jan 29 09:43:35 2007 -0800

    Bug #9680: Remove bogus blank length limiting in xf86SetModeCrtc().
    
    Our modes typically come from EDID or default modes, and when the monitor
    asks for a specific mode, deciding to tweak it usually results in incorrect
    display.  And if the user is specifying a mode by hand, tweaking it then is
    still pretty rude.
    
    Reviewed by: ajax

diff --git a/src/i830_xf86Modes.c b/src/i830_xf86Modes.c
index 482a332..7403a4c 100644
--- a/src/i830_xf86Modes.c
+++ b/src/i830_xf86Modes.c
@@ -150,45 +150,6 @@ xf86SetModeCrtc(DisplayModePtr p, int ad
     }
     p->CrtcHAdjusted = FALSE;
     p->CrtcVAdjusted = FALSE;
-
-    /*
-     * XXX
-     *
-     * The following is taken from VGA, but applies to other cores as well.
-     */
-    p->CrtcVBlankStart = min(p->CrtcVSyncStart, p->CrtcVDisplay);
-    p->CrtcVBlankEnd = max(p->CrtcVSyncEnd, p->CrtcVTotal);
-    if ((p->CrtcVBlankEnd - p->CrtcVBlankStart) >= 127) {
-        /* 
-         * V Blanking size must be < 127.
-         * Moving blank start forward is safer than moving blank end
-         * back, since monitors clamp just AFTER the sync pulse (or in
-         * the sync pulse), but never before.
-         */
-        p->CrtcVBlankStart = p->CrtcVBlankEnd - 127;
-	/*
-	 * If VBlankStart is now > VSyncStart move VBlankStart
-	 * to VSyncStart using the maximum width that fits into
-	 * VTotal.
-	 */
-	if (p->CrtcVBlankStart > p->CrtcVSyncStart) {
-	    p->CrtcVBlankStart = p->CrtcVSyncStart;
-	    p->CrtcVBlankEnd = min(p->CrtcHBlankStart + 127, p->CrtcVTotal);
-	}
-    }
-    p->CrtcHBlankStart = min(p->CrtcHSyncStart, p->CrtcHDisplay);
-    p->CrtcHBlankEnd = max(p->CrtcHSyncEnd, p->CrtcHTotal);
-
-    if ((p->CrtcHBlankEnd - p->CrtcHBlankStart) >= 63 * 8) {
-        /*
-         * H Blanking size must be < 63*8. Same remark as above.
-         */
-        p->CrtcHBlankStart = p->CrtcHBlankEnd - 63 * 8;
-	if (p->CrtcHBlankStart > p->CrtcHSyncStart) {
-	    p->CrtcHBlankStart = p->CrtcHSyncStart;
-	    p->CrtcHBlankEnd = min(p->CrtcHBlankStart + 63 * 8, p->CrtcHTotal);
-	}
-    }
 }
 
 /**