Commit 9bc35499 authored by Adam Jackson's avatar Adam Jackson Committed by Eric Anholt
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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: default avatarAdam Jackson <ajax@redhat.com>
Signed-off-by: default avatarEric Anholt <eric@anholt.net>
parent a1786bd2
......@@ -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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