drm/i915/icl: Gate clocks for DSI (32250c8e) · Commits · 戴 / test

drivers/gpu/drm/i915/icl_dsi.c

+20 −0

Original line number	Diff line number	Diff line
		@@ -536,6 +536,23 @@ static void gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder)
		}
		}

		static void gen11_dsi_gate_clocks(struct intel_encoder *encoder)
		{
		struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
		struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
		u32 tmp;
		enum port port;

		mutex_lock(&dev_priv->dpll_lock);
		tmp = I915_READ(DPCLKA_CFGCR0_ICL);
		for_each_dsi_port(port, intel_dsi->ports) {
		tmp \|= DPCLKA_CFGCR0_DDI_CLK_OFF(port);
		}

		I915_WRITE(DPCLKA_CFGCR0_ICL, tmp);
		mutex_unlock(&dev_priv->dpll_lock);
		}

		static void
		gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
		const struct intel_crtc_state *pipe_config)
		@@ -883,6 +900,9 @@ gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder,

		/* Step (4h, 4i, 4j, 4k): Configure transcoder */
		gen11_dsi_configure_transcoder(encoder, pipe_config);

		/* Step 4l: Gate DDI clocks */
		gen11_dsi_gate_clocks(encoder);
		}

		static void gen11_dsi_powerup_panel(struct intel_encoder *encoder)