Attachment 482 Details for Bug 871 – xorg-x11-CVS-ati-radeon-forcelegacycrt.patch

[patch] xorg-x11-CVS-ati-radeon-forcelegacycrt.patch

xorg-x11-CVS-ati-radeon-forcelegacycrt.patch (text/plain), 3.02 KB, created by Mike A. Harris on 2004-07-15 00:43:07 UTC

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Creator: Mike A. Harris

Created: 2004-07-15 00:43:07 UTC

Size: 3.02 KB

patch

obsolete

>Patch author:  Mike A. Harris <mharris@redhat.com>
>
>This patch adds a new option to the Radeon driver named "ForceLegacyCRT",
>which allows the user to force the driver to use a legacy VGA CRT display
>when no monitor is detected.  Very old monitors can then be used with
>Radeon hardware.
>
>Fixes bug report/feature request:
>        http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=69978
>
>Submitted patch upstream during post 6.7.0 development:
>        http://freedesktop.org/bugzilla/show_bug.cgi?id=871
>
>
>--- xc/programs/Xserver/hw/xfree86/drivers/ati/radeon_driver.c.ati-radeon-forcelegacycrt	2004-07-09 17:58:52.000000000 -0400
>+++ xc/programs/Xserver/hw/xfree86/drivers/ati/radeon_driver.c	2004-07-15 03:15:16.000000000 -0400
>@@ -160,7 +160,8 @@
>     OPTION_RENDER_ACCEL,
>     OPTION_SUBPIXEL_ORDER,
> #endif
>-    OPTION_SHOWCACHE
>+    OPTION_SHOWCACHE,
>+    OPTION_FORCE_LEGACY_CRT
> } RADEONOpts;
> 
> const OptionInfoRec RADEONOptions[] = {
>@@ -204,6 +205,7 @@
>     { OPTION_SUBPIXEL_ORDER, "SubPixelOrder",    OPTV_ANYSTR,  {0}, FALSE },
> #endif
>     { OPTION_SHOWCACHE,      "ShowCache",        OPTV_BOOLEAN, {0}, FALSE },
>+    { OPTION_FORCE_LEGACY_CRT, "ForceLegacyCRT",         OPTV_INTEGER, {0}, FALSE },
>     { -1,                    NULL,               OPTV_NONE,    {0}, FALSE }
> };
> 
>@@ -932,7 +934,21 @@
> 	    if (INREG(RADEON_LVDS_GEN_CNTL) & RADEON_LVDS_ON) MonType = MT_LCD;
> 	    else MonType = MT_DFP;
> 	} else MonType = MT_CRT;
>-    } else MonType = MT_NONE;
>+    } else if (xf86ReturnOptValBool(info->Options,
>+                                    OPTION_FORCE_LEGACY_CRT, FALSE)) {
>+        /* If no monitor/LCD type detected so far, we test for option
>+	 * ForceLegacyCRT, and if present, we force-enable CRT for this head.
>+	 * Option added for Alan Cox's ancient mono VGA monitor:
>+	 * http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=69978
>+	 */
>+	MonType = MT_CRT;
>+        xf86DrvMsg(pScrn->scrnIndex, X_INFO,
>+		   "Using option ForceLegacyCRT from config file to allow a single legacy\n\t"
>+		   "VGA CRT to be used.  Do NOT attach a second display to the other head\n\t"
>+		   "or damage may result.\n");
>+    } else {
>+	MonType = MT_NONE;
>+    }
> 
>     info->DDCReg = DDCReg;
> 
>--- xc/programs/Xserver/hw/xfree86/drivers/ati/radeon.man.ati-radeon-forcelegacycrt	2004-06-20 03:26:08.000000000 -0400
>+++ xc/programs/Xserver/hw/xfree86/drivers/ati/radeon.man	2004-07-15 03:17:15.000000000 -0400
>@@ -419,6 +419,14 @@
> Enable page flipping for 3D acceleration. This will increase performance
> but not work correctly in some rare cases, hence the default is
> .B off.
>+.TP
>+.BI "Option \*qForceLegacyCRT\*q \*q" boolean \*q
>+Enable usage of legacy VGA CRT display when no monitor is detected.  This
>+can be used to force the driver to work with ancient VGA monitors, such as
>+an old mono VGA monitor.  *WARNING* Do NOT use this option with dualhead
>+configurations with both heads connected to a dualhead Radeon card, as it
>+can potentially damage the monitor.
>+.B off.
> .br
> .B Note:
> Page flipping does not work well in certain configurations with MergedFB.  If you

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