drm/i915/rkl: Add DDC pin mapping (cd0a8952) · Commits · 戴 / test

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

+21 −1

Original line number	Diff line number	Diff line
		@@ -3082,6 +3082,24 @@ static u8 mcc_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
		return ddc_pin;
		}

		static u8 rkl_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port port)
		{
		enum phy phy = intel_port_to_phy(dev_priv, port);

		WARN_ON(port == PORT_C);

		/*
		* Pin mapping for RKL depends on which PCH is present. With TGP, the
		* final two outputs use type-c pins, even though they're actually
		* combo outputs. With CMP, the traditional DDI A-D pins are used for
		* all outputs.
		*/
		if (INTEL_PCH_TYPE(dev_priv) >= PCH_TGP && phy >= PHY_C)
		return GMBUS_PIN_9_TC1_ICP + phy - PHY_C;

		return GMBUS_PIN_1_BXT + phy;
		}

		static u8 g4x_port_to_ddc_pin(struct drm_i915_private *dev_priv,
		enum port port)
		{
		@@ -3119,7 +3137,9 @@ static u8 intel_hdmi_ddc_pin(struct intel_encoder *encoder)
		return ddc_pin;
		}

		if (HAS_PCH_MCC(dev_priv))
		if (IS_ROCKETLAKE(dev_priv))
		ddc_pin = rkl_port_to_ddc_pin(dev_priv, port);
		else if (HAS_PCH_MCC(dev_priv))
		ddc_pin = mcc_port_to_ddc_pin(dev_priv, port);
		else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
		ddc_pin = icl_port_to_ddc_pin(dev_priv, port);