Add per-monitor config file option for maximum pixel clock.

3 files changed, 15 insertions, 7 deletions

diff --git a/hw/xfree86/common/xf86Config.c b/hw/xfree86/common/xf86Config.c
index 4bd93b89f..b5b49272b 100644
--- a/hw/xfree86/common/xf86Config.c
+++ b/hw/xfree86/common/xf86Config.c
@@ -1,5 +1,3 @@
-
-
 /*
  * Loosely based on code bearing the following copyright:
  *
@@ -1947,12 +1945,15 @@ configScreen(confScreenPtr screenp, XF86ConfScreenPtr conf_screen, int scrnum,
 }
 
 typedef enum {
-    MON_REDUCEDBLANKING
+    MON_REDUCEDBLANKING,
+    MON_MAX_PIX_CLOCK,
 } MonitorValues;
 
 static OptionInfoRec MonitorOptions[] = {
   { MON_REDUCEDBLANKING,      "ReducedBlanking",        OPTV_BOOLEAN,
        {0}, FALSE },
+  { MON_MAX_PIX_CLOCK,	      "MaxPixClock",		OPTV_FREQ,
+       {0}, FALSE },
   { -1,                                NULL,                   OPTV_NONE,
        {0}, FALSE },
 };
@@ -2099,11 +2100,11 @@ configMonitor(MonPtr monitorp, XF86ConfMonitorPtr conf_monitor)
 	    return FALSE;
     }
 
-    /* Check wether this Monitor accepts Reduced Blanking modelines */
     xf86ProcessOptions(-1, monitorp->options, MonitorOptions);
-
     xf86GetOptValBool(MonitorOptions, MON_REDUCEDBLANKING,
                       &monitorp->reducedblanking);
+    xf86GetOptValFreq(MonitorOptions, MON_MAX_PIX_CLOCK, OPTUNITS_KHZ,
+		      &monitorp->maxPixClock);
     return TRUE;
 }
 
diff --git a/hw/xfree86/common/xf86Mode.c b/hw/xfree86/common/xf86Mode.c
index 0c25c96db..7fcce10b1 100644
--- a/hw/xfree86/common/xf86Mode.c
+++ b/hw/xfree86/common/xf86Mode.c
@@ -1472,6 +1472,12 @@ xf86ValidateModes(ScrnInfoPtr scrp, DisplayModePtr availModes,
 			 scrp->monitor->vrefresh[i].lo,
 			 scrp->monitor->vrefresh[i].hi);
 	}
+	if (scrp->monitor->maxPixClock) {
+	    xf86DrvMsg(scrp->scrnIndex, X_INFO,
+		       "%s: Using maximum pixel clock of %.2f MHz\n",
+		       scrp->monitor->id,
+		       (float)scrp->monitor->maxPixClock / 1000.0);
+	}
     }
 
     /*
diff --git a/hw/xfree86/modes/xf86EdidModes.c b/hw/xfree86/modes/xf86EdidModes.c
index 22329922c..3f67ef3d7 100644
--- a/hw/xfree86/modes/xf86EdidModes.c
+++ b/hw/xfree86/modes/xf86EdidModes.c
@@ -427,7 +427,7 @@ xf86DDCMonitorSet(int scrnIndex, MonPtr Monitor, xf86MonPtr DDC)
 {
     DisplayModePtr Modes = NULL, Mode;
     int i, clock;
-    Bool have_hsync = FALSE, have_vrefresh = FALSE;
+    Bool have_hsync = FALSE, have_vrefresh = FALSE, have_maxpixclock = FALSE;
 
     if (!Monitor || !DDC)
         return;
@@ -447,6 +447,7 @@ xf86DDCMonitorSet(int scrnIndex, MonPtr Monitor, xf86MonPtr DDC)
     /* Skip EDID ranges if they were specified in the config file */
     have_hsync = (Monitor->nHsync != 0);
     have_vrefresh = (Monitor->nVrefresh != 0);
+    have_maxpixclock = (Monitor->maxPixClock != 0);
 
     /* Go through the detailed monitor sections */
     for (i = 0; i < DET_TIMINGS; i++) {
@@ -481,7 +482,7 @@ xf86DDCMonitorSet(int scrnIndex, MonPtr Monitor, xf86MonPtr DDC)
 	    }
 
 	    clock = DDC->det_mon[i].section.ranges.max_clock * 1000;
-	    if (clock > Monitor->maxPixClock)
+	    if (!have_maxpixclock && clock > Monitor->maxPixClock)
 		Monitor->maxPixClock = clock;
 
             break;