drm/i915: Relocate intel_dp_program_link_training_pattern()

intel_dp_program_link_training_pattern() clearly belongs in
intel_dp_link_training.c. Make it so.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210318161015.22070-4-ville.syrjala@linux.intel.com

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

@@ -3386,39 +3386,6 @@ ivb_cpu_edp_set_signal_levels(struct intel_dp *intel_dp,
 	intel_de_posting_read(dev_priv, intel_dp->output_reg);
 }
 
-static char dp_training_pattern_name(u8 train_pat)
-{
-	switch (train_pat) {
-	case DP_TRAINING_PATTERN_1:
-	case DP_TRAINING_PATTERN_2:
-	case DP_TRAINING_PATTERN_3:
-		return '0' + train_pat;
-	case DP_TRAINING_PATTERN_4:
-		return '4';
-	default:
-		MISSING_CASE(train_pat);
-		return '?';
-	}
-}
-
-void
-intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
-				       const struct intel_crtc_state *crtc_state,
-				       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);
-
-	if (train_pat != DP_TRAINING_PATTERN_DISABLE)
-		drm_dbg_kms(&dev_priv->drm,
-			    "[ENCODER:%d:%s] Using DP training pattern TPS%c\n",
-			    encoder->base.base.id, encoder->base.name,
-			    dp_training_pattern_name(train_pat));
-
-	intel_dp->set_link_train(intel_dp, crtc_state, dp_train_pat);
-}
-
 static void
 intel_dp_link_down(struct intel_encoder *encoder,
 		   const struct intel_crtc_state *old_crtc_state)

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

@@ -87,10 +87,6 @@ void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv,
 void intel_edp_drrs_flush(struct drm_i915_private *dev_priv,
 			  unsigned int frontbuffer_bits);
 
-void
-intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
-				       const struct intel_crtc_state *crtc_state,
-				       u8 dp_train_pat);
 void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
 			   u8 *link_bw, u8 *rate_select);
 bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp);

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

@@ -367,6 +367,39 @@ intel_dp_set_link_train(struct intel_dp *intel_dp,
 	return drm_dp_dpcd_write(&intel_dp->aux, reg, buf, len) == len;
 }
 
+static char dp_training_pattern_name(u8 train_pat)
+{
+	switch (train_pat) {
+	case DP_TRAINING_PATTERN_1:
+	case DP_TRAINING_PATTERN_2:
+	case DP_TRAINING_PATTERN_3:
+		return '0' + train_pat;
+	case DP_TRAINING_PATTERN_4:
+		return '4';
+	default:
+		MISSING_CASE(train_pat);
+		return '?';
+	}
+}
+
+void
+intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
+				       const struct intel_crtc_state *crtc_state,
+				       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);
+
+	if (train_pat != DP_TRAINING_PATTERN_DISABLE)
+		drm_dbg_kms(&dev_priv->drm,
+			    "[ENCODER:%d:%s] Using DP training pattern TPS%c\n",
+			    encoder->base.base.id, encoder->base.name,
+			    dp_training_pattern_name(train_pat));
+
+	intel_dp->set_link_train(intel_dp, crtc_state, dp_train_pat);
+}
+
 void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
 				const struct intel_crtc_state *crtc_state,
 				enum drm_dp_phy dp_phy)

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

@@ -17,6 +17,9 @@ void intel_dp_get_adjust_train(struct intel_dp *intel_dp,
 			       const struct intel_crtc_state *crtc_state,
 			       enum drm_dp_phy dp_phy,
 			       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,
+					    u8 dp_train_pat);
 void intel_dp_set_signal_levels(struct intel_dp *intel_dp,
 				const struct intel_crtc_state *crtc_state,
 				enum drm_dp_phy dp_phy);