drm/i915/ddi: For an active output call the DP encoder sync_state() only for DP

If the DDI encoder output is enabled in HDMI mode there is no point in
calling intel_dp_sync_state(), as in that case the DPCD initialization
will fail - as expected - with AUX timeouts. Prevent calling the hook in
this case.
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240722165503.2084999-5-imre.deak@intel.com

drivers/gpu/drm/i915/display/intel_ddi.c

@@ -4172,7 +4172,8 @@ static void intel_ddi_sync_state(struct intel_encoder *encoder,
 		intel_tc_port_sanitize_mode(enc_to_dig_port(encoder),
 					    crtc_state);
 
-	if (intel_encoder_is_dp(encoder))
+	if ((crtc_state && intel_crtc_has_dp_encoder(crtc_state)) ||
+	    (!crtc_state && intel_encoder_is_dp(encoder)))
 		intel_dp_sync_state(encoder, crtc_state);
 }