diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 9f41645a73ba..93fb961030ae 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9280,16 +9280,10 @@ static void icelake_get_ddi_pll(struct drm_i915_private *dev_priv,
 			return;
 		break;
 	case PORT_C:
-		id = DPLL_ID_ICL_MGPLL1;
-		break;
 	case PORT_D:
-		id = DPLL_ID_ICL_MGPLL2;
-		break;
 	case PORT_E:
-		id = DPLL_ID_ICL_MGPLL3;
-		break;
 	case PORT_F:
-		id = DPLL_ID_ICL_MGPLL4;
+		id = icl_port_to_mg_pll_id(port);
 		break;
 	default:
 		MISSING_CASE(port);
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c
index 874646357ad1..e96383a74c9a 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -2621,7 +2621,7 @@ static enum port icl_mg_pll_id_to_port(enum intel_dpll_id id)
 	return id - DPLL_ID_ICL_MGPLL1 + PORT_C;
 }
 
-static enum intel_dpll_id icl_port_to_mg_pll_id(enum port port)
+enum intel_dpll_id icl_port_to_mg_pll_id(enum port port)
 {
 	return port - PORT_C + DPLL_ID_ICL_MGPLL1;
 }
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.h b/drivers/gpu/drm/i915/intel_dpll_mgr.h
index 9c033236f2ba..58d3fba06076 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.h
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.h
@@ -345,5 +345,6 @@ void intel_dpll_dump_hw_state(struct drm_i915_private *dev_priv,
 int icl_calc_dp_combo_pll_link(struct drm_i915_private *dev_priv,
 			       uint32_t pll_id);
 int cnl_hdmi_pll_ref_clock(struct drm_i915_private *dev_priv);
+enum intel_dpll_id icl_port_to_mg_pll_id(enum port port);
 
 #endif /* _INTEL_DPLL_MGR_H_ */