drm/i915: Show LTTPR in the TPS debug print

Indicate which LTTPR we're currently attempting to train when
we print which training pattern we're using.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211004170535.4173-3-ville.syrjala@linux.intel.comReviewed-by: Imre Deak <imre.deak@intel.com>

drivers/gpu/drm/i915/display/g4x_dp.c

@@ -637,7 +637,7 @@ static void intel_dp_enable_port(struct intel_dp *intel_dp,
 	/* enable with pattern 1 (as per spec) */
 
 	intel_dp_program_link_training_pattern(intel_dp, crtc_state,
-					       DP_TRAINING_PATTERN_1);
+					       DP_PHY_DPRX, DP_TRAINING_PATTERN_1);
 
 	/*
 	 * Magic for VLV/CHV. We _must_ first set up the register

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

@@ -376,7 +376,7 @@ intel_dp_set_link_train(struct intel_dp *intel_dp,
 	int len;
 
 	intel_dp_program_link_training_pattern(intel_dp, crtc_state,
-					       dp_train_pat);
+					       dp_phy, dp_train_pat);
 
 	buf[0] = dp_train_pat;
 	/* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */
@@ -404,17 +404,20 @@ static char dp_training_pattern_name(u8 train_pat)
 void
 intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
 				       const struct intel_crtc_state *crtc_state,
+				       enum drm_dp_phy dp_phy,
 				       u8 dp_train_pat)
 {
 	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	u8 train_pat = intel_dp_training_pattern_symbol(dp_train_pat);
+	char phy_name[10];
 
 	if (train_pat != DP_TRAINING_PATTERN_DISABLE)
 		drm_dbg_kms(&dev_priv->drm,
-			    "[ENCODER:%d:%s] Using DP training pattern TPS%c\n",
+			    "[ENCODER:%d:%s] Using DP training pattern TPS%c, at %s\n",
 			    encoder->base.base.id, encoder->base.name,
-			    dp_training_pattern_name(train_pat));
+			    dp_training_pattern_name(train_pat),
+			    intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name)));
 
 	intel_dp->set_link_train(intel_dp, crtc_state, dp_train_pat);
 }
@@ -855,7 +858,7 @@ void intel_dp_stop_link_train(struct intel_dp *intel_dp,
 	intel_dp->link_trained = true;
 
 	intel_dp_disable_dpcd_training_pattern(intel_dp, DP_PHY_DPRX);
-	intel_dp_program_link_training_pattern(intel_dp, crtc_state,
+	intel_dp_program_link_training_pattern(intel_dp, crtc_state, DP_PHY_DPRX,
 					       DP_TRAINING_PATTERN_DISABLE);
 }
 

drivers/gpu/drm/i915/display/intel_dp_link_training.h

@@ -19,6 +19,7 @@ void intel_dp_get_adjust_train(struct intel_dp *intel_dp,
 			       const u8 link_status[DP_LINK_STATUS_SIZE]);
 void intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
 					    const struct intel_crtc_state *crtc_state,
+					    enum drm_dp_phy dp_phy,
 					    u8 dp_train_pat);
 void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
 				const struct intel_crtc_state *crtc_state,