[PATCH v2 5/5] drm/i915/adlp+/dp_mst: Align master transcoder disabling with spec wrt. DP2 config

[Imre Deak <imre.deak@intel.com>]

On ADLP+ during modeset disabling, disable the DP2 configuration for MST
master transcoders as required by the specification.

Bspec: 55424, 54128, 65448, 68849
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index d82bc1bf8b68f..6adbc7d0b90d9 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3062,6 +3062,8 @@ static void intel_ddi_post_disable_dp(struct intel_atomic_state *state,
 
 	intel_dp_sink_set_fec_ready(intel_dp, old_crtc_state, false);
 
+	intel_ddi_config_transcoder_dp2(old_crtc_state, false);
+
 	/*
 	 * From TGL spec: "If single stream or multi-stream master transcoder:
 	 * Configure Transcoder Clock select to direct no clock to the
-- 
2.44.2