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38 lines
1.3 KiB
38 lines
1.3 KiB
From 7f588d4ca94f4efd146b47cdcb6483edda4886f4 Mon Sep 17 00:00:00 2001
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From: Adam Jackson <ajax@redhat.com>
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Date: Fri, 28 May 2010 17:17:37 -0400
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Subject: [PATCH 2/4] drm/i915: Honor sync polarity from VBT panel timing descriptors
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I'm actually kind of shocked that it works at all otherwise.
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Signed-off-by: Adam Jackson <ajax@redhat.com>
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Signed-off-by: Eric Anholt <eric@anholt.net>
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---
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drivers/gpu/drm/i915/intel_bios.c | 10 ++++++++++
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1 files changed, 10 insertions(+), 0 deletions(-)
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diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
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index f9ba452..8905070 100644
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--- a/drivers/gpu/drm/i915/intel_bios.c
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+++ b/drivers/gpu/drm/i915/intel_bios.c
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@@ -95,6 +95,16 @@ fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode,
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panel_fixed_mode->clock = dvo_timing->clock * 10;
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panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
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+ if (dvo_timing->hsync_positive)
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+ panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC;
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+ else
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+ panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
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+
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+ if (dvo_timing->vsync_positive)
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+ panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
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+ else
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+ panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC;
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+
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/* Some VBTs have bogus h/vtotal values */
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if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal)
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panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1;
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--
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1.7.0.1
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