From b27f93c6dbe0a6e416db2c65738e996c70a403c1 Mon Sep 17 00:00:00 2001

From: Fedora X Ninjas <airlied@redhat.com>

Date: Thu, 6 May 2010 12:55:34 +1000

Subject: [PATCH] xf86: allow for no outputs connected at startup operation.

When nothing is connected at startup and we canGrow, allow the server to start with a 1024x768 framebuffer, and when the drivers send hotplug events this will expand to the correct size dynamically.

Signed-off-by: Dave Airlie <airlied@redhat.com>

---

 hw/xfree86/modes/xf86Crtc.c |   66 ++++++++++++++++++++++++++++++------------

 1 files changed, 47 insertions(+), 19 deletions(-)

diff --git a/hw/xfree86/modes/xf86Crtc.c b/hw/xfree86/modes/xf86Crtc.c

index 571ffd0..99082ec 100644

--- a/hw/xfree86/modes/xf86Crtc.c

+++ b/hw/xfree86/modes/xf86Crtc.c

@@ -48,6 +48,8 @@

 #include "xf86xv.h"

+#define NO_OUTPUT_DEFAULT_WIDTH 1024

+#define NO_OUTPUT_DEFAULT_HEIGHT 768

 /*

  * Initialize xf86CrtcConfig structure

  */

@@ -1946,7 +1948,7 @@ xf86SetScrnInfoModes (ScrnInfoPtr scrn)

 #endif

 }

-static void

+static Bool

 xf86CollectEnabledOutputs(ScrnInfoPtr scrn, xf86CrtcConfigPtr config,

 			  Bool *enabled)

 {

@@ -1961,8 +1963,10 @@ xf86CollectEnabledOutputs(ScrnInfoPtr scrn, xf86CrtcConfigPtr config,

 		   "No outputs definitely connected, trying again...\n");

 	for (o = 0; o < config->num_output; o++)

-	    enabled[o] = xf86OutputEnabled(config->output[o], FALSE);

+	    any_enabled |= enabled[o] = xf86OutputEnabled(config->output[o], FALSE);

     }

+

+    return any_enabled;

 }

 static Bool

@@ -2409,6 +2413,8 @@ xf86InitialConfiguration (ScrnInfoPtr scrn, Bool canGrow)

     Bool		*enabled;

     int			width, height;

     int			i = scrn->scrnIndex;

+    Bool have_outputs = TRUE;

+    Bool ret;

     /* Set up the device options */

     config->options = xnfalloc (sizeof (xf86DeviceOptions));

@@ -2433,20 +2439,26 @@ xf86InitialConfiguration (ScrnInfoPtr scrn, Bool canGrow)

     modes = xnfcalloc (config->num_output, sizeof (DisplayModePtr));

     enabled = xnfcalloc (config->num_output, sizeof (Bool));

-    xf86CollectEnabledOutputs(scrn, config, enabled);

-

-    if (xf86TargetUserpref(scrn, config, modes, enabled, width, height))

-	xf86DrvMsg(i, X_INFO, "Using user preference for initial modes\n");

-    else if (xf86TargetRightOf(scrn, config, modes, enabled, width, height))

-	xf86DrvMsg(i, X_INFO, "Using spanning desktop for initial modes\n");

-    else if (xf86TargetPreferred(scrn, config, modes, enabled, width, height))

-	xf86DrvMsg(i, X_INFO, "Using exact sizes for initial modes\n");

-    else if (xf86TargetAspect(scrn, config, modes, enabled, width, height))

-	xf86DrvMsg(i, X_INFO, "Using fuzzy aspect match for initial modes\n");

-    else if (xf86TargetFallback(scrn, config, modes, enabled, width, height))

-	xf86DrvMsg(i, X_INFO, "Using sloppy heuristic for initial modes\n");

-    else

-	xf86DrvMsg(i, X_WARNING, "Unable to find initial modes\n");

+    ret = xf86CollectEnabledOutputs(scrn, config, enabled);

+    if (ret == FALSE && canGrow) {

+	xf86DrvMsg(i, X_WARNING, "Unable to find connected outputs - setting %dx%d initial framebuffer\n",

+		   NO_OUTPUT_DEFAULT_WIDTH, NO_OUTPUT_DEFAULT_HEIGHT);

+	have_outputs = FALSE;

+    }

+    else {

+	if (xf86TargetUserpref(scrn, config, modes, enabled, width, height))

+	    xf86DrvMsg(i, X_INFO, "Using user preference for initial modes\n");

+	else if (xf86TargetRightOf(scrn, config, modes, enabled, width, height))

+	    xf86DrvMsg(i, X_INFO, "Using spanning desktop for initial modes\n");

+	else if (xf86TargetPreferred(scrn, config, modes, enabled, width, height))

+	    xf86DrvMsg(i, X_INFO, "Using exact sizes for initial modes\n");

+	else if (xf86TargetAspect(scrn, config, modes, enabled, width, height))

+	    xf86DrvMsg(i, X_INFO, "Using fuzzy aspect match for initial modes\n");

+	else if (xf86TargetFallback(scrn, config, modes, enabled, width, height))

+	    xf86DrvMsg(i, X_INFO, "Using sloppy heuristic for initial modes\n");

+	else

+	    xf86DrvMsg(i, X_WARNING, "Unable to find initial modes\n");

+    }

     for (o = -1; nextEnabledOutput(config, enabled, &o); ) {

 	if (!modes[o])

@@ -2479,7 +2491,7 @@ xf86InitialConfiguration (ScrnInfoPtr scrn, Bool canGrow)

     /*

      * Assign CRTCs to fit output configuration

      */

-    if (!xf86PickCrtcs (scrn, crtcs, modes, 0, width, height))

+    if (have_outputs && !xf86PickCrtcs (scrn, crtcs, modes, 0, width, height))

     {

 	xfree (crtcs);

 	xfree (modes);

@@ -2541,6 +2553,13 @@ xf86InitialConfiguration (ScrnInfoPtr scrn, Bool canGrow)

 	 */

 	xf86DefaultScreenLimits (scrn, &width, &height, canGrow);

+	if (have_outputs == FALSE) {

+	    if (width < NO_OUTPUT_DEFAULT_WIDTH && height < NO_OUTPUT_DEFAULT_HEIGHT) {

+		width = NO_OUTPUT_DEFAULT_WIDTH;

+		height = NO_OUTPUT_DEFAULT_HEIGHT;

+	    }

+	}

+

 	scrn->display->virtualX = width;

 	scrn->display->virtualY = height;

     }

@@ -2566,8 +2585,17 @@ xf86InitialConfiguration (ScrnInfoPtr scrn, Bool canGrow)

 			      width, height);

     }

-    /* Mirror output modes to scrn mode list */

-    xf86SetScrnInfoModes (scrn);

+    if (have_outputs) {

+	/* Mirror output modes to scrn mode list */

+	xf86SetScrnInfoModes (scrn);

+    } else {

+	/* Clear any existing modes from scrn->modes */

+	while (scrn->modes != NULL)

+	    xf86DeleteMode(&scrn->modes, scrn->modes);

+	scrn->modes = xf86ModesAdd(scrn->modes,

+				   xf86CVTMode(width, height, 60, 0, 0));

+    }

+

     xfree (crtcs);

     xfree (modes);

-- 

1.7.0.1