[PATCH 5/8] drm/i915: Enable AUX power earlier

Imre Deak imre.deak at intel.com
Mon Oct 29 11:24:41 UTC 2018


Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c     | 46 +++++++++++++++++++++++++-----------
 drivers/gpu/drm/i915/intel_display.c |  2 ++
 2 files changed, 34 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index e34f873f143c..d3628f5fb0a3 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2082,10 +2082,8 @@ bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
 }
 
 static inline enum intel_display_power_domain
-intel_ddi_main_link_aux_domain(struct intel_dp *intel_dp)
+intel_ddi_main_link_aux_domain(struct intel_digital_port *dig_port)
 {
-	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-
 	/* CNL+ HW requires corresponding AUX IOs to be powered up for PSR with
 	 * DC states enabled at the same time, while for driver initiated AUX
 	 * transfers we need the same AUX IOs to be powered but with DC states
@@ -2120,11 +2118,8 @@ static u64 intel_ddi_get_power_domains(struct intel_encoder *encoder,
 	domains = BIT_ULL(dig_port->ddi_io_power_domain);
 
 	/* AUX power is only needed for (e)DP mode, not for HDMI. */
-	if (intel_crtc_has_dp_encoder(crtc_state)) {
-		struct intel_dp *intel_dp = &dig_port->dp;
-
-		domains |= BIT_ULL(intel_ddi_main_link_aux_domain(intel_dp));
-	}
+	if (intel_crtc_has_dp_encoder(crtc_state))
+		domains |= BIT_ULL(intel_ddi_main_link_aux_domain(dig_port));
 
 	return domains;
 }
@@ -2891,6 +2886,31 @@ static void intel_ddi_clk_disable(struct intel_encoder *encoder)
 	}
 }
 
+static void icl_ddi_pre_pll_enable(struct intel_encoder *encoder,
+				   const struct intel_crtc_state *crtc_state,
+				   const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
+
+	if (intel_crtc_has_dp_encoder(crtc_state))
+		intel_display_power_get(dev_priv,
+					intel_ddi_main_link_aux_domain(dig_port));
+
+}
+
+static void icl_ddi_post_pll_disable(struct intel_encoder *encoder,
+				     const struct intel_crtc_state *crtc_state,
+				     const struct drm_connector_state *conn_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
+
+	if (intel_crtc_has_dp_encoder(crtc_state))
+		intel_display_power_put(dev_priv,
+					intel_ddi_main_link_aux_domain(dig_port));
+}
+
 static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
 				    const struct intel_crtc_state *crtc_state,
 				    const struct drm_connector_state *conn_state)
@@ -2904,9 +2924,6 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
 
 	WARN_ON(is_mst && (port == PORT_A || port == PORT_E));
 
-	intel_display_power_get(dev_priv,
-				intel_ddi_main_link_aux_domain(intel_dp));
-
 	intel_dp_set_link_params(intel_dp, crtc_state->port_clock,
 				 crtc_state->lane_count, is_mst);
 
@@ -3071,9 +3088,6 @@ static void intel_ddi_post_disable_dp(struct intel_encoder *encoder,
 	intel_display_power_put(dev_priv, dig_port->ddi_io_power_domain);
 
 	intel_ddi_clk_disable(encoder);
-
-	intel_display_power_put(dev_priv,
-				intel_ddi_main_link_aux_domain(intel_dp));
 }
 
 static void intel_ddi_post_disable_hdmi(struct intel_encoder *encoder,
@@ -3834,6 +3848,10 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 	intel_encoder->enable = intel_enable_ddi;
 	if (IS_GEN9_LP(dev_priv))
 		intel_encoder->pre_pll_enable = bxt_ddi_pre_pll_enable;
+	if (IS_ICELAKE(dev_priv)) {
+		intel_encoder->pre_pll_enable = icl_ddi_pre_pll_enable;
+		intel_encoder->post_pll_disable = icl_ddi_post_pll_disable;
+	}
 	intel_encoder->pre_enable = intel_ddi_pre_enable;
 	intel_encoder->disable = intel_disable_ddi;
 	intel_encoder->post_disable = intel_ddi_post_disable;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 09ba5c8306dd..a11ef1a20090 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5872,6 +5872,8 @@ static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
 
 	if (INTEL_GEN(dev_priv) >= 11)
 		icl_unmap_plls_to_ports(crtc, old_crtc_state, old_state);
+
+	intel_encoders_post_pll_disable(crtc, old_crtc_state, old_state);
 }
 
 static void i9xx_pfit_enable(const struct intel_crtc_state *crtc_state)
-- 
2.13.2



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