drm/i915/hdmi: SCDC Scrambling enable without CTS mode

Setting the SCDC scrambling CTS mode causes HDMI Link Layer protocol tests
HF1-12 and HF1-13 to fail.

V2: Removed "Source Shall" entries to a new patch
V3: Rebase to drm-tip
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107895
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107896Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1544482374-26507-1-git-send-email-clinton.a.taylor@intel.com

drivers/gpu/drm/i915/intel_ddi.c

@@ -1880,7 +1880,7 @@ void intel_ddi_enable_transcoder_func(const struct intel_crtc_state *crtc_state)
 			temp |= TRANS_DDI_MODE_SELECT_DVI;
 
 		if (crtc_state->hdmi_scrambling)
-			temp |= TRANS_DDI_HDMI_SCRAMBLING_MASK;
+			temp |= TRANS_DDI_HDMI_SCRAMBLING;
 		if (crtc_state->hdmi_high_tmds_clock_ratio)
 			temp |= TRANS_DDI_HIGH_TMDS_CHAR_RATE;
 	} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
@@ -3793,8 +3793,7 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
 		if (intel_dig_port->infoframe_enabled(encoder, pipe_config))
 			pipe_config->has_infoframe = true;
 
-		if ((temp & TRANS_DDI_HDMI_SCRAMBLING_MASK) ==
-			TRANS_DDI_HDMI_SCRAMBLING_MASK)
+		if (temp & TRANS_DDI_HDMI_SCRAMBLING)
 			pipe_config->hdmi_scrambling = true;
 		if (temp & TRANS_DDI_HIGH_TMDS_CHAR_RATE)
 			pipe_config->hdmi_high_tmds_clock_ratio = true;