Attachment 62228 Details for Bug 50236 – No hsync front porch of 0 for Cantiga+

[patch] No hsync front porch of 0 for Cantiga+

0001-drm-i915-Cantiga-cannot-handle-a-hsync-front-porch-o.patch (text/plain), 1.06 KB, created by Chris Wilson on 2012-05-29 07:06:54 UTC

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Creator: Chris Wilson

Created: 2012-05-29 07:06:54 UTC

Size: 1.06 KB

patch

obsolete

>From 2625cf572fca5e114e9dc58189c2c3af8a023b2b Mon Sep 17 00:00:00 2001
>From: Chris Wilson <chris@chris-wilson.co.uk>
>Date: Tue, 29 May 2012 15:04:26 +0100
>Subject: [PATCH] drm/i915: Cantiga+ cannot handle a hsync front porch of 0
>
>Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
>---
> drivers/gpu/drm/i915/intel_display.c |    7 +++++++
> 1 file changed, 7 insertions(+)
>
>diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
>index 67ed819..8047090 100644
>--- a/drivers/gpu/drm/i915/intel_display.c
>+++ b/drivers/gpu/drm/i915/intel_display.c
>@@ -3414,6 +3414,13 @@ static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
> 	if (!(adjusted_mode->private_flags & INTEL_MODE_CRTC_TIMINGS_SET))
> 		drm_mode_set_crtcinfo(adjusted_mode, 0);
> 
>+	/* Cantiga+ cannot handle modes with a hsync front porch of 0:
>+	 * http://dt.igk.intel.com/wa_database/DetailsView/Show?wa_name_id=803
>+	 */
>+	if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
>+	    adjusted_mode->hdisplay == adjust_mode->hsync_start)
>+		return false;
>+
> 	return true;
> }
> 
>-- 
>1.7.10
>

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