As now the cost to lock and use a TC port is higher due the implementation of the TCCOLD sequences it is worty to hold a reference of the TC port to avoid all this locking at every aux transaction part of the DisplayPort detection.
Cc: Imre Deak <imre.d...@intel.com> Cc: Cooper Chiou <cooper.ch...@intel.com> Cc: Kai-Heng Feng <kai.heng.f...@canonical.com> Signed-off-by: José Roberto de Souza <jose.so...@intel.com> --- drivers/gpu/drm/i915/display/intel_dp.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index ef2e06e292d5..89b52211928b 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5718,6 +5718,7 @@ intel_dp_detect(struct drm_connector *connector, struct intel_dp *intel_dp = intel_attached_dp(to_intel_connector(connector)); struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); struct intel_encoder *encoder = &dig_port->base; + enum phy phy = intel_port_to_phy(dev_priv, encoder->port); enum drm_connector_status status; drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s]\n", @@ -5726,12 +5727,17 @@ intel_dp_detect(struct drm_connector *connector, !drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex)); /* Can't disconnect eDP */ - if (intel_dp_is_edp(intel_dp)) + if (intel_dp_is_edp(intel_dp)) { status = edp_detect(intel_dp); - else if (intel_digital_port_connected(encoder)) - status = intel_dp_detect_dpcd(intel_dp); - else - status = connector_status_disconnected; + } else { + if (intel_phy_is_tc(dev_priv, phy)) + intel_tc_port_get_link(dig_port, 1); + + if (intel_digital_port_connected(encoder)) + status = intel_dp_detect_dpcd(intel_dp); + else + status = connector_status_disconnected; + } if (status == connector_status_disconnected) { memset(&intel_dp->compliance, 0, sizeof(intel_dp->compliance)); @@ -5809,6 +5815,9 @@ intel_dp_detect(struct drm_connector *connector, if (status != connector_status_connected && !intel_dp->is_mst) intel_dp_unset_edid(intel_dp); + if (intel_phy_is_tc(dev_priv, phy)) + intel_tc_port_put_link(dig_port); + /* * Make sure the refs for power wells enabled during detect are * dropped to avoid a new detect cycle triggered by HPD polling. -- 2.25.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx