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authorAdam Jackson <ajax@redhat.com>2010-05-28 17:17:37 -0400
committerEric Anholt <eric@anholt.net>2010-06-01 10:19:37 -0700
commit9bc354998f8aa8a83b0cd430e8fcf2cbc3be7367 (patch)
tree23ae978bf9926a6d653cf49fb7fcd54ce2542504
parenta1786bd270b08834a735e06c3d5430eeb0baf017 (diff)
downloadblackbird-op-linux-9bc354998f8aa8a83b0cd430e8fcf2cbc3be7367.tar.gz
blackbird-op-linux-9bc354998f8aa8a83b0cd430e8fcf2cbc3be7367.zip
drm/i915: Honor sync polarity from VBT panel timing descriptors
I'm actually kind of shocked that it works at all otherwise. Signed-off-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Eric Anholt <eric@anholt.net>
-rw-r--r--drivers/gpu/drm/i915/intel_bios.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 4c748d8f73d6..96f75d7f6633 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -95,6 +95,16 @@ fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode,
panel_fixed_mode->clock = dvo_timing->clock * 10;
panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
+ if (dvo_timing->hsync_positive)
+ panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC;
+ else
+ panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
+
+ if (dvo_timing->vsync_positive)
+ panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
+ else
+ panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC;
+
/* Some VBTs have bogus h/vtotal values */
if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal)
panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1;
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