From 3b2ed431342948646ed1ecf2ad73e4b54e88572b Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Fri, 28 Jun 2019 17:36:17 +0300 Subject: [PATCH] drm/i915: Don't enable the DDI-IO power in the TypeC TBT-alt mode MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit According to the spec we should not enable the DDI-IO power domain if the TypeC port is in the TBT-alt mode, so do that only in the other TypeC modes or for non-TypeC ports. See the internal BSpec Index/22243. v2: - Add the internal BSpec reference to the log message. (José) Cc: Manasi Navare Cc: Anusha Srivatsa Cc: José Roberto de Souza Signed-off-by: Imre Deak Reviewed-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20190628143635.22066-6-imre.deak@intel.com --- drivers/gpu/drm/i915/display/intel_ddi.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 442cd3997109..c16fa789a931 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -3124,7 +3124,10 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, intel_ddi_clk_select(encoder, crtc_state); - intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain); + if (!intel_port_is_tc(dev_priv, port) || + dig_port->tc_mode != TC_PORT_TBT_ALT) + intel_display_power_get(dev_priv, + dig_port->ddi_io_power_domain); icl_program_mg_dp_mode(dig_port); icl_disable_phy_clock_gating(dig_port); @@ -3306,8 +3309,10 @@ static void intel_ddi_post_disable_dp(struct intel_encoder *encoder, intel_edp_panel_vdd_on(intel_dp); intel_edp_panel_off(intel_dp); - intel_display_power_put_unchecked(dev_priv, - dig_port->ddi_io_power_domain); + if (!intel_port_is_tc(dev_priv, encoder->port) || + dig_port->tc_mode != TC_PORT_TBT_ALT) + intel_display_power_put_unchecked(dev_priv, + dig_port->ddi_io_power_domain); intel_ddi_clk_disable(encoder); } -- 2.30.2