drm/i915: Unify the TypeC port notation in debug/error messages

Unify the TypeC port notation in log messages, so that it matches the
spec. For instance the first ICL TypeC port will read as 'Port C/TC#1'.

v2:
- Format print the name only once. (José)

Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190628143635.22066-9-imre.deak@intel.com

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

@@ -4265,9 +4265,12 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 	intel_dig_port->max_lanes = intel_ddi_max_lanes(intel_dig_port);
 	intel_dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
 
-	intel_dig_port->tc_legacy_port = intel_port_is_tc(dev_priv, port) &&
+	if (intel_port_is_tc(dev_priv, port)) {
-					 !port_info->supports_typec_usb &&
+		bool is_legacy = !port_info->supports_typec_usb &&
-					 !port_info->supports_tbt;
+				 !port_info->supports_tbt;
+
+		intel_tc_port_init(intel_dig_port, is_legacy);
+	}
 
 	switch (port) {
 	case PORT_A:

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

@@ -86,7 +86,8 @@ static bool icl_tc_phy_connect(struct intel_digital_port *dig_port)
 
 	val = I915_READ(PORT_TX_DFLEXDPPMS);
 	if (!(val & DP_PHY_MODE_STATUS_COMPLETED(tc_port))) {
-		DRM_DEBUG_KMS("DP PHY for TC port %d not ready\n", tc_port);
+		DRM_DEBUG_KMS("Port %s: PHY not ready\n",
+			      dig_port->tc_port_name);
 		WARN_ON(dig_port->tc_legacy_port);
 		return false;
 	}
@@ -107,7 +108,8 @@ static bool icl_tc_phy_connect(struct intel_digital_port *dig_port)
 	 */
 	if (dig_port->tc_mode == TC_PORT_DP_ALT &&
 	    !(I915_READ(PORT_TX_DFLEXDPSP) & TC_LIVE_STATE_TC(tc_port))) {
-		DRM_DEBUG_KMS("TC PHY %d sudden disconnect.\n", tc_port);
+		DRM_DEBUG_KMS("Port %s: PHY sudden disconnect\n",
+			      dig_port->tc_port_name);
 		icl_tc_phy_disconnect(dig_port);
 		return false;
 	}
@@ -137,8 +139,8 @@ void icl_tc_phy_disconnect(struct intel_digital_port *dig_port)
 		I915_WRITE(PORT_TX_DFLEXDPCSSS, val);
 	}
 
-	DRM_DEBUG_KMS("Port %c TC type %s disconnected\n",
+	DRM_DEBUG_KMS("Port %s: mode %s disconnected\n",
-		      port_name(dig_port->base.port),
+		      dig_port->tc_port_name,
 		      tc_port_mode_name(dig_port->tc_mode));
 
 	dig_port->tc_mode = TC_PORT_TBT_ALT;
@@ -148,7 +150,6 @@ static void icl_update_tc_port_type(struct drm_i915_private *dev_priv,
 				    struct intel_digital_port *intel_dig_port,
 				    bool is_legacy, bool is_typec, bool is_tbt)
 {
-	enum port port = intel_dig_port->base.port;
 	enum tc_port_mode old_mode = intel_dig_port->tc_mode;
 
 	WARN_ON(is_legacy + is_typec + is_tbt != 1);
@@ -163,7 +164,8 @@ static void icl_update_tc_port_type(struct drm_i915_private *dev_priv,
 		return;
 
 	if (old_mode != intel_dig_port->tc_mode)
-		DRM_DEBUG_KMS("Port %c has TC type %s\n", port_name(port),
+		DRM_DEBUG_KMS("Port %s: port has mode %s\n",
+			      intel_dig_port->tc_port_name,
 			      tc_port_mode_name(intel_dig_port->tc_mode));
 }
 
@@ -191,8 +193,8 @@ bool intel_tc_port_connected(struct intel_digital_port *dig_port)
 	 */
 	if (!dig_port->tc_legacy_port &&
 	    I915_READ(SDEISR) & SDE_TC_HOTPLUG_ICP(tc_port)) {
-		DRM_ERROR("VBT incorrectly claims port %c is not TypeC legacy\n",
+		DRM_ERROR("Port %s: VBT incorrectly claims port is not TypeC legacy\n",
-			  port_name(port));
+			  dig_port->tc_port_name);
 		dig_port->tc_legacy_port = true;
 	}
 	is_legacy = dig_port->tc_legacy_port;
@@ -220,3 +222,17 @@ bool intel_tc_port_connected(struct intel_digital_port *dig_port)
 	return true;
 }
 
+void intel_tc_port_init(struct intel_digital_port *dig_port, bool is_legacy)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	enum port port = dig_port->base.port;
+	enum tc_port tc_port = intel_port_to_tc(i915, port);
+
+	if (WARN_ON(tc_port == PORT_TC_NONE))
+		return;
+
+	snprintf(dig_port->tc_port_name, sizeof(dig_port->tc_port_name),
+		 "%c/TC#%d", port_name(port), tc_port + 1);
+
+	dig_port->tc_legacy_port = is_legacy;
+}

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

@@ -15,4 +15,6 @@ void icl_tc_phy_disconnect(struct intel_digital_port *dig_port);
 bool intel_tc_port_connected(struct intel_digital_port *dig_port);
 int intel_tc_port_fia_max_lane_count(struct intel_digital_port *dig_port);
 
+void intel_tc_port_init(struct intel_digital_port *dig_port, bool is_legacy);
+
 #endif /* __INTEL_TC_H__ */

drivers/gpu/drm/i915/intel_drv.h

@@ -1225,6 +1225,7 @@ struct intel_digital_port {
 	enum aux_ch aux_ch;
 	enum intel_display_power_domain ddi_io_power_domain;
 	bool tc_legacy_port:1;
+	char tc_port_name[8];
 	enum tc_port_mode tc_mode;
 
 	void (*write_infoframe)(struct intel_encoder *encoder,