[Intel-gfx] [PATCH 2/2] drm/i915/hdmi: Add missing sequence

[José Roberto de Souza]

It was missing the step 7.b - "If not type-C static connection,
configure PORT_CL_DW10 Static Power Down to power up all lanes of the
DDI".

BSpec: 53339
BSpec: 49191
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 255dc796ede5..d1c8a17fc8ea 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3312,6 +3312,7 @@ static void intel_ddi_pre_enable_hdmi(struct intel_atomic_state *state,
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
 	int level = intel_ddi_hdmi_level(encoder);
 
 	intel_dp_dual_mode_set_tmds_output(&dig_port->hdmi, true);
@@ -3339,6 +3340,15 @@ static void intel_ddi_pre_enable_hdmi(struct intel_atomic_state *state,
 
 	intel_ddi_enable_pipe_clock(encoder, crtc_state);
 
+	if (intel_phy_is_combo(dev_priv, phy)) {
+		bool lane_reversal =
+			dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL;
+
+		intel_combo_phy_power_up_lanes(dev_priv, phy, false,
+					       crtc_state->lane_count,
+					       lane_reversal);
+	}
+
 	dig_port->set_infoframes(encoder, crtc_state->has_infoframe, crtc_state,
 				 conn_state);
 }
-- 
2.26.2