drm/i915/icl+: Don't enable DDI IO power on a TypeC port in TBT mode
authorImre Deak <imre.deak@intel.com>
Mon, 30 Mar 2020 15:22:44 +0000 (18:22 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 17 Apr 2020 14:12:19 +0000 (16:12 +0200)
commita976b33092783229413f5e8beaec63b79ed043f6
tree09933ff4093e0a6a4ec19588f844b20e321a3450
parent65f96b5dad4d0fed235fb58a3da2c8b8c88c1270
drm/i915/icl+: Don't enable DDI IO power on a TypeC port in TBT mode

The DDI IO power well must not be enabled for a TypeC port in TBT mode,
ensure this during driver loading/system resume.

This gets rid of error messages like
[drm] *ERROR* power well DDI E TC2 IO state mismatch (refcount 1/enabled 0)

and avoids leaking the power ref when disabling the output.

Cc: <stable@vger.kernel.org> # v5.4+
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200330152244.11316-1-imre.deak@intel.com
(cherry picked from commit f77a2db27f26c3ccba0681f7e89fef083718f07f)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/i915/display/intel_ddi.c