drm/i915: Add PORT_TCn aliases to enum port

Since tgl the DDIs have been named A,B,C,TC1,TC2,TC3...
Add the appropriate enum values for the TC DDIs to enum port.

v2: Deal with rkl and dg1
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201028213323.5423-3-ville.syrjala@linux.intel.com

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

@@ -1688,17 +1688,15 @@ static enum port dvo_port_to_port(struct drm_i915_private *dev_priv,
 		[PORT_I] = { DVO_PORT_HDMII, DVO_PORT_DPI, -1 },
 	};
 	/*
-	 * Bspec lists the ports as A, B, C, D - however internally in our
-	 * driver we keep them as PORT_A, PORT_B, PORT_D and PORT_E so the
-	 * registers in Display Engine match the right offsets. Apply the
-	 * mapping here to translate from VBT to internal convention.
+	 * RKL VBT uses PHY based mapping. Combo PHYs A,B,C,D
+	 * map to DDI A,B,TC1,TC2 respectively.
 	 */
 	static const int rkl_port_mapping[][3] = {
 		[PORT_A] = { DVO_PORT_HDMIA, DVO_PORT_DPA, -1 },
 		[PORT_B] = { DVO_PORT_HDMIB, DVO_PORT_DPB, -1 },
 		[PORT_C] = { -1 },
-		[PORT_D] = { DVO_PORT_HDMIC, DVO_PORT_DPC, -1 },
-		[PORT_E] = { DVO_PORT_HDMID, DVO_PORT_DPD, -1 },
+		[PORT_TC1] = { DVO_PORT_HDMIC, DVO_PORT_DPC, -1 },
+		[PORT_TC2] = { DVO_PORT_HDMID, DVO_PORT_DPD, -1 },
 	};
 
 	if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))

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

@@ -5069,8 +5069,8 @@ static bool hti_uses_phy(struct drm_i915_private *i915, enum phy phy)
 static enum hpd_pin dg1_hpd_pin(struct drm_i915_private *dev_priv,
 				enum port port)
 {
-	if (port >= PORT_D)
-		return HPD_PORT_C + port - PORT_D;
+	if (port >= PORT_TC1)
+		return HPD_PORT_C + port - PORT_TC1;
 	else
 		return HPD_PORT_A + port - PORT_A;
 }
@@ -5078,8 +5078,8 @@ static enum hpd_pin dg1_hpd_pin(struct drm_i915_private *dev_priv,
 static enum hpd_pin tgl_hpd_pin(struct drm_i915_private *dev_priv,
 				enum port port)
 {
-	if (port >= PORT_D)
-		return HPD_PORT_TC1 + port - PORT_D;
+	if (port >= PORT_TC1)
+		return HPD_PORT_TC1 + port - PORT_TC1;
 	else
 		return HPD_PORT_A + port - PORT_A;
 }
@@ -5090,8 +5090,8 @@ static enum hpd_pin rkl_hpd_pin(struct drm_i915_private *dev_priv,
 	if (HAS_PCH_TGP(dev_priv))
 		return tgl_hpd_pin(dev_priv, port);
 
-	if (port >= PORT_D)
-		return HPD_PORT_C + port - PORT_D;
+	if (port >= PORT_TC1)
+		return HPD_PORT_C + port - PORT_TC1;
 	else
 		return HPD_PORT_A + port - PORT_A;
 }

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

@@ -7463,12 +7463,12 @@ bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy)
 
 enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port)
 {
-	if (IS_ROCKETLAKE(i915) && port >= PORT_D)
-		return (enum phy)port - 1;
+	if (IS_ROCKETLAKE(i915) && port >= PORT_TC1)
+		return PHY_C + port - PORT_TC1;
 	else if (IS_JSL_EHL(i915) && port == PORT_D)
 		return PHY_A;
 
-	return (enum phy)port;
+	return PHY_A + port - PORT_A;
 }
 
 enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv, enum port port)
@@ -7477,9 +7477,9 @@ enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv, enum port port)
 		return TC_PORT_NONE;
 
 	if (INTEL_GEN(dev_priv) >= 12)
-		return port - PORT_D;
-
-	return port - PORT_C;
+		return TC_PORT_1 + port - PORT_TC1;
+	else
+		return TC_PORT_1 + port - PORT_C;
 }
 
 enum intel_display_power_domain intel_port_to_power_domain(enum port port)
@@ -17222,17 +17222,17 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
 	if (IS_ROCKETLAKE(dev_priv)) {
 		intel_ddi_init(dev_priv, PORT_A);
 		intel_ddi_init(dev_priv, PORT_B);
-		intel_ddi_init(dev_priv, PORT_D);	/* DDI TC1 */
-		intel_ddi_init(dev_priv, PORT_E);	/* DDI TC2 */
+		intel_ddi_init(dev_priv, PORT_TC1);
+		intel_ddi_init(dev_priv, PORT_TC2);
 	} else if (INTEL_GEN(dev_priv) >= 12) {
 		intel_ddi_init(dev_priv, PORT_A);
 		intel_ddi_init(dev_priv, PORT_B);
-		intel_ddi_init(dev_priv, PORT_D);
-		intel_ddi_init(dev_priv, PORT_E);
-		intel_ddi_init(dev_priv, PORT_F);
-		intel_ddi_init(dev_priv, PORT_G);
-		intel_ddi_init(dev_priv, PORT_H);
-		intel_ddi_init(dev_priv, PORT_I);
+		intel_ddi_init(dev_priv, PORT_TC1);
+		intel_ddi_init(dev_priv, PORT_TC2);
+		intel_ddi_init(dev_priv, PORT_TC2);
+		intel_ddi_init(dev_priv, PORT_TC4);
+		intel_ddi_init(dev_priv, PORT_TC5);
+		intel_ddi_init(dev_priv, PORT_TC6);
 		icl_dsi_init(dev_priv);
 	} else if (IS_JSL_EHL(dev_priv)) {
 		intel_ddi_init(dev_priv, PORT_A);

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

@@ -208,6 +208,14 @@ enum port {
 	PORT_H,
 	PORT_I,
 
+	/* tgl+ */
+	PORT_TC1 = PORT_D,
+	PORT_TC2,
+	PORT_TC3,
+	PORT_TC4,
+	PORT_TC5,
+	PORT_TC6,
+
 	I915_MAX_PORTS
 };