drm/i915/adl_s: Add PHYs for Alderlake S

Alderlake-S has 5 combo phys, add reg definitions for
combo phys and update the port to phy helper for ADL-S.

v2:
- Change IS_GEN() >= 12 to IS_TIGERLAKE() in intel_phy_is_tc()
and return false for platforms RKL,DG1 and ADLS.(mdroper)

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Aditya Swarup <aditya.swarup@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210125140753.347998-5-aditya.swarup@intel.com

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

@@ -6935,6 +6935,8 @@ bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy)
 {
 	if (phy == PHY_NONE)
 		return false;
+	else if (IS_ALDERLAKE_S(dev_priv))
+		return phy <= PHY_E;
 	else if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))
 		return phy <= PHY_D;
 	else if (IS_JSL_EHL(dev_priv))
@@ -6947,11 +6949,9 @@ bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy)
 
 bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy)
 {
-	if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))
-		return false;
-	else if (INTEL_GEN(dev_priv) >= 12)
+	if (IS_TIGERLAKE(dev_priv))
 		return phy >= PHY_D && phy <= PHY_I;
-	else if (INTEL_GEN(dev_priv) >= 11 && !IS_JSL_EHL(dev_priv))
+	else if (IS_ICELAKE(dev_priv))
 		return phy >= PHY_C && phy <= PHY_F;
 	else
 		return false;
@@ -6959,7 +6959,9 @@ 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_DG1(i915) || IS_ROCKETLAKE(i915)) && port >= PORT_TC1)
+	if (IS_ALDERLAKE_S(i915) && port >= PORT_TC1)
+		return PHY_B + port - PORT_TC1;
+	else if ((IS_DG1(i915) || IS_ROCKETLAKE(i915)) && port >= PORT_TC1)
 		return PHY_C + port - PORT_TC1;
 	else if (IS_JSL_EHL(i915) && port == PORT_D)
 		return PHY_A;

drivers/gpu/drm/i915/i915_reg.h

@@ -1874,10 +1874,13 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 #define _ICL_COMBOPHY_B			0x6C000
 #define _EHL_COMBOPHY_C			0x160000
 #define _RKL_COMBOPHY_D			0x161000
+#define _ADL_COMBOPHY_E			0x16B000
+
 #define _ICL_COMBOPHY(phy)		_PICK(phy, _ICL_COMBOPHY_A, \
 					      _ICL_COMBOPHY_B, \
 					      _EHL_COMBOPHY_C, \
-					      _RKL_COMBOPHY_D)
+					      _RKL_COMBOPHY_D, \
+					      _ADL_COMBOPHY_E)
 
 /* CNL/ICL Port CL_DW registers */
 #define _ICL_PORT_CL_DW(dw, phy)	(_ICL_COMBOPHY(phy) + \