Commit 9bc35499 authored by Adam Jackson's avatar Adam Jackson Committed by Eric Anholt
Browse files

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 <>
Signed-off-by: default avatarEric Anholt <>
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;
panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
if (dvo_timing->vsync_positive)
panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
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;
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment