I'm actually kind of shocked that it works at all otherwise.
Signed-off-by: Adam Jackson <a...@redhat.com>
---
drivers/gpu/drm/i915/intel_bios.c | 10 ++++++++++
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 4c748d8..96f75d7 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;
--
1.7.0.1
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