drm/i915/lspcon: Remove DPCD compare based resume time workaround
authorImre Deak <imre.deak@intel.com>
Fri, 27 Jan 2017 09:39:20 +0000 (11:39 +0200)
committerImre Deak <imre.deak@intel.com>
Mon, 6 Feb 2017 14:33:33 +0000 (16:33 +0200)
commitf123959594c000a43b267c75695bd3ffd0748eb1
treeb1382183b51c5b276b3d254a7049115af198df9f
parent390b4e00241ce14ca3967c4698c8f6a158c5a674
drm/i915/lspcon: Remove DPCD compare based resume time workaround

This effectively reverts
commit 489375c866c111f16cea93b2467ebe59c9022cc7
Author: Imre Deak <imre.deak@intel.com>
Date:   Mon Oct 24 19:33:31 2016 +0300

    drm/i915/lspcon: Add workaround for resuming in PCON mode

The workaround was added without considering that HPD is low during
the failed AUX transfers the WA fixed. Since the previous patch we
wait for HPD to get asserted. My tests also show that this happens
_after_ the DPCD reads start to return correct values. This
suggests that we don't need this WA any more, let's try to remove
it to reduce the clutter.

Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1485509961-9010-4-git-send-email-imre.deak@intel.com
drivers/gpu/drm/i915/intel_drv.h
drivers/gpu/drm/i915/intel_lspcon.c