diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c
index 53250fc057e1..8c22b91ed040 100644
--- a/drivers/thunderbolt/icm.c
+++ b/drivers/thunderbolt/icm.c
@@ -89,7 +89,7 @@ static inline struct tb *icm_to_tb(struct icm *icm)
 
 static inline u8 phy_port_from_route(u64 route, u8 depth)
 {
-	return tb_switch_phy_port_from_link(route >> ((depth - 1) * 8));
+	return tb_phy_port_from_link(route >> ((depth - 1) * 8));
 }
 
 static inline u8 dual_link_from_link(u8 link)
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index 2fefe76621ca..ea21d927bd09 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -40,8 +40,6 @@ struct tb_switch_nvm {
 };
 
 #define TB_SWITCH_KEY_SIZE		32
-/* Each physical port contains 2 links on modern controllers */
-#define TB_SWITCH_LINKS_PER_PHY_PORT	2
 
 /**
  * struct tb_switch - a thunderbolt switch
@@ -367,11 +365,6 @@ struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
 					       u8 depth);
 struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
 
-static inline unsigned int tb_switch_phy_port_from_link(unsigned int link)
-{
-	return (link - 1) / TB_SWITCH_LINKS_PER_PHY_PORT;
-}
-
 static inline void tb_switch_put(struct tb_switch *sw)
 {
 	put_device(&sw->dev);
diff --git a/include/linux/thunderbolt.h b/include/linux/thunderbolt.h
index 910b1bf92112..43b8d1e09341 100644
--- a/include/linux/thunderbolt.h
+++ b/include/linux/thunderbolt.h
@@ -78,6 +78,13 @@ struct tb {
 
 extern struct bus_type tb_bus_type;
 
+#define TB_LINKS_PER_PHY_PORT	2
+
+static inline unsigned int tb_phy_port_from_link(unsigned int link)
+{
+	return (link - 1) / TB_LINKS_PER_PHY_PORT;
+}
+
 /**
  * struct tb_property_dir - XDomain property directory
  * @uuid: Directory UUID or %NULL if root directory