]> git.baikalelectronics.ru Git - kernel.git/commit
drm/i915: Ignore panel type from OpRegion on SKL
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Tue, 12 Jul 2016 12:00:37 +0000 (15:00 +0300)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Thu, 14 Jul 2016 13:05:40 +0000 (16:05 +0300)
commit2fda5c81db8231295bef58c2a10d2825db427f62
tree4e5306dab657049aef7664a2af0aec93403d3129
parent5d8c2c612541dc83970cb2786a15d4e44c01aa4d
drm/i915: Ignore panel type from OpRegion on SKL

Dell XPS 13 9350 apparently doesn't like it when we use the panel type
from OpRegion. The OpRegion panel type (0) tells us to use use low
vswing for eDP, whereas the VBT panel type (2) tells us to use normal
vswing. The problem is that low vswing results in some display flickers.
Since no one seems to know how this stuff is supposed to be handled,
let's just ignore the OpRegion panel type on SKL for now.

v2: Print the panel type correctly in the debug output

Reported-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: drm-intel-fixes@lists.freedesktop.org
References: https://lists.freedesktop.org/archives/intel-gfx/2016-June/098826.html
Fixes: 330775cdce5c ("drm/i915: Get panel_type from OpRegion panel details")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1468324837-29237-1-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
drivers/gpu/drm/i915/intel_opregion.c