drm/i915: Replace intel_bios_is_port_hpd_inverted() with intel_bios_encoder_hpd_invert()

intel_bios_is_port_hpd_inverted() is only used on bxt/glk on
which we always have encoder->devdata available. So consult
that instead of digging around in vbt.ports[].

And rename the function to match the common pattern.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208015508.24824-6-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

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

@@ -3574,26 +3574,6 @@ bool intel_bios_get_dsc_params(struct intel_encoder *encoder,
 	return false;
 }
 
-/**
- * intel_bios_is_port_hpd_inverted - is HPD inverted for %port
- * @i915:	i915 device instance
- * @port:	port to check
- *
- * Return true if HPD should be inverted for %port.
- */
-bool
-intel_bios_is_port_hpd_inverted(const struct drm_i915_private *i915,
-				enum port port)
-{
-	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[port];
-
-	if (drm_WARN_ON_ONCE(&i915->drm,
-			     !IS_GEMINILAKE(i915) && !IS_BROXTON(i915)))
-		return false;
-
-	return devdata && devdata->child.hpd_invert;
-}
-
 enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *i915,
 				   enum port port)
 {
@@ -3763,6 +3743,11 @@ bool intel_bios_encoder_lane_reversal(const struct intel_bios_encoder_data *devd
 	return devdata && devdata->child.lane_reversal;
 }
 
+bool intel_bios_encoder_hpd_invert(const struct intel_bios_encoder_data *devdata)
+{
+	return devdata && devdata->child.hpd_invert;
+}
+
 const struct intel_bios_encoder_data *
 intel_bios_encoder_data_lookup(struct drm_i915_private *i915, enum port port)
 {

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

@@ -248,8 +248,6 @@ bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port por
 bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
 bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, enum port port);
 bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port);
-bool intel_bios_is_port_hpd_inverted(const struct drm_i915_private *i915,
-				     enum port port);
 enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *dev_priv, enum port port);
 bool intel_bios_get_dsc_params(struct intel_encoder *encoder,
 			       struct intel_crtc_state *crtc_state,
@@ -274,5 +272,6 @@ bool intel_bios_encoder_is_lspcon(const struct intel_bios_encoder_data *devdata)
 int intel_bios_encoder_dp_boost_level(const struct intel_bios_encoder_data *devdata);
 int intel_bios_encoder_hdmi_boost_level(const struct intel_bios_encoder_data *devdata);
 bool intel_bios_encoder_lane_reversal(const struct intel_bios_encoder_data *devdata);
+bool intel_bios_encoder_hpd_invert(const struct intel_bios_encoder_data *devdata);
 
 #endif /* _INTEL_BIOS_H_ */

drivers/gpu/drm/i915/i915_irq.c

@@ -3131,23 +3131,22 @@ static void ilk_hpd_irq_setup(struct drm_i915_private *dev_priv)
 
 static u32 bxt_hotplug_enables(struct intel_encoder *encoder)
 {
-	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	u32 hotplug;
 
 	switch (encoder->hpd_pin) {
 	case HPD_PORT_A:
 		hotplug = PORTA_HOTPLUG_ENABLE;
-		if (intel_bios_is_port_hpd_inverted(i915, PORT_A))
+		if (intel_bios_encoder_hpd_invert(encoder->devdata))
 			hotplug |= BXT_DDIA_HPD_INVERT;
 		return hotplug;
 	case HPD_PORT_B:
 		hotplug = PORTB_HOTPLUG_ENABLE;
-		if (intel_bios_is_port_hpd_inverted(i915, PORT_B))
+		if (intel_bios_encoder_hpd_invert(encoder->devdata))
 			hotplug |= BXT_DDIB_HPD_INVERT;
 		return hotplug;
 	case HPD_PORT_C:
 		hotplug = PORTC_HOTPLUG_ENABLE;
-		if (intel_bios_is_port_hpd_inverted(i915, PORT_C))
+		if (intel_bios_encoder_hpd_invert(encoder->devdata))
 			hotplug |= BXT_DDIC_HPD_INVERT;
 		return hotplug;
 	default: