thunderbolt: Use constants for path weight and priority

Makes it easier to follow and update. No functional changes.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/thunderbolt/tunnel.c

@@ -21,12 +21,18 @@
 #define TB_PCI_PATH_DOWN		0
 #define TB_PCI_PATH_UP			1
 
+#define TB_PCI_PRIORITY			3
+#define TB_PCI_WEIGHT			1
+
 /* USB3 adapters use always HopID of 8 for both directions */
 #define TB_USB3_HOPID			8
 
 #define TB_USB3_PATH_DOWN		0
 #define TB_USB3_PATH_UP			1
 
+#define TB_USB3_PRIORITY		3
+#define TB_USB3_WEIGHT			3
+
 /* DP adapters use HopID 8 for AUX and 9 for Video */
 #define TB_DP_AUX_TX_HOPID		8
 #define TB_DP_AUX_RX_HOPID		8
@@ -36,6 +42,12 @@
 #define TB_DP_AUX_PATH_OUT		1
 #define TB_DP_AUX_PATH_IN		2
 
+#define TB_DP_VIDEO_PRIORITY		1
+#define TB_DP_VIDEO_WEIGHT		1
+
+#define TB_DP_AUX_PRIORITY		2
+#define TB_DP_AUX_WEIGHT		1
+
 /* Minimum number of credits needed for PCIe path */
 #define TB_MIN_PCIE_CREDITS		6U
 /*
@@ -46,6 +58,9 @@
 /* Minimum number of credits for DMA path */
 #define TB_MIN_DMA_CREDITS		1
 
+#define TB_DMA_PRIORITY			5
+#define TB_DMA_WEIGHT			1
+
 static unsigned int dma_credits = TB_DMA_CREDITS;
 module_param(dma_credits, uint, 0444);
 MODULE_PARM_DESC(dma_credits, "specify custom credits for DMA tunnels (default: "
@@ -213,8 +228,8 @@ static int tb_pci_init_path(struct tb_path *path)
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 3;
-	path->weight = 1;
+	path->priority = TB_PCI_PRIORITY;
+	path->weight = TB_PCI_WEIGHT;
 	path->drop_packages = 0;
 
 	tb_path_for_each_hop(path, hop) {
@@ -1152,8 +1167,8 @@ static void tb_dp_init_aux_path(struct tb_path *path)
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 2;
-	path->weight = 1;
+	path->priority = TB_DP_AUX_PRIORITY;
+	path->weight = TB_DP_AUX_WEIGHT;
 
 	tb_path_for_each_hop(path, hop)
 		tb_dp_init_aux_credits(hop);
@@ -1196,8 +1211,8 @@ static int tb_dp_init_video_path(struct tb_path *path)
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_fc_enable = TB_PATH_NONE;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 1;
-	path->weight = 1;
+	path->priority = TB_DP_VIDEO_PRIORITY;
+	path->weight = TB_DP_VIDEO_WEIGHT;
 
 	tb_path_for_each_hop(path, hop) {
 		int ret;
@@ -1471,8 +1486,8 @@ static int tb_dma_init_rx_path(struct tb_path *path, unsigned int credits)
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 5;
-	path->weight = 1;
+	path->priority = TB_DMA_PRIORITY;
+	path->weight = TB_DMA_WEIGHT;
 	path->clear_fc = true;
 
 	/*
@@ -1505,8 +1520,8 @@ static int tb_dma_init_tx_path(struct tb_path *path, unsigned int credits)
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 5;
-	path->weight = 1;
+	path->priority = TB_DMA_PRIORITY;
+	path->weight = TB_DMA_WEIGHT;
 	path->clear_fc = true;
 
 	tb_path_for_each_hop(path, hop) {
@@ -1838,8 +1853,8 @@ static void tb_usb3_init_path(struct tb_path *path)
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 3;
-	path->weight = 3;
+	path->priority = TB_USB3_PRIORITY;
+	path->weight = TB_USB3_WEIGHT;
 	path->drop_packages = 0;
 
 	tb_path_for_each_hop(path, hop)