drm/i915/mtl: Add DP rates

Add DP rates for Meteorlake.
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230413212443.1504245-2-radhakrishna.sripada@intel.com

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

@@ -420,6 +420,11 @@ static int ehl_max_source_rate(struct intel_dp *intel_dp)
 	return 810000;
 }
 
+static int mtl_max_source_rate(struct intel_dp *intel_dp)
+{
+	return intel_dp_is_edp(intel_dp) ? 675000 : 810000;
+}
+
 static int vbt_max_link_rate(struct intel_dp *intel_dp)
 {
 	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
@@ -444,6 +449,10 @@ static void
 intel_dp_set_source_rates(struct intel_dp *intel_dp)
 {
 	/* The values must be in increasing order */
+	static const int mtl_rates[] = {
+		162000, 216000, 243000, 270000, 324000, 432000, 540000, 675000,
+		810000,
+	};
 	static const int icl_rates[] = {
 		162000, 216000, 270000, 324000, 432000, 540000, 648000, 810000,
 		1000000, 1350000,
@@ -469,7 +478,11 @@ intel_dp_set_source_rates(struct intel_dp *intel_dp)
 	drm_WARN_ON(&dev_priv->drm,
 		    intel_dp->source_rates || intel_dp->num_source_rates);
 
-	if (DISPLAY_VER(dev_priv) >= 11) {
+	if (DISPLAY_VER(dev_priv) >= 14) {
+		source_rates = mtl_rates;
+		size = ARRAY_SIZE(mtl_rates);
+		max_rate = mtl_max_source_rate(intel_dp);
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
 		source_rates = icl_rates;
 		size = ARRAY_SIZE(icl_rates);
 		if (IS_DG2(dev_priv))