drm/i915/icl: HPD pin for port F

Extend enum hpd_pin to port F so that we can start using this for ICL.

v2: Rebase.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180323172419.24911-6-paulo.r.zanoni@intel.com

drivers/gpu/drm/i915/i915_drv.h

@@ -262,6 +262,7 @@ enum hpd_pin {
 	HPD_PORT_C,
 	HPD_PORT_D,
 	HPD_PORT_E,
+	HPD_PORT_F,
 	HPD_NUM_PINS
 };
 

drivers/gpu/drm/i915/intel_hotplug.c

@@ -100,6 +100,8 @@ enum port intel_hpd_pin_to_port(struct drm_i915_private *dev_priv,
 		if (IS_CNL_WITH_PORT_F(dev_priv))
 			return PORT_F;
 		return PORT_E;
+	case HPD_PORT_F:
+		return PORT_F;
 	default:
 		return PORT_NONE; /* no port for this pin */
 	}
@@ -132,6 +134,7 @@ enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,
 	case PORT_F:
 		if (IS_CNL_WITH_PORT_F(dev_priv))
 			return HPD_PORT_E;
+		return HPD_PORT_F;
 	default:
 		MISSING_CASE(port);
 		return HPD_NONE;