Commit 4fbdc4a5 authored by Imre Deak's avatar Imre Deak
Browse files

drm/i915/dp: Write the source OUI for eDP before detecting sink capabilities 



The eDP sink's capabilities, like DSC, may depend on the source OUI
written to the sink, so ensure the OUI is written before reading out the
capabilities.

Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241025160259.3088727-7-imre.deak@intel.com
parent 99fe4aec

drivers/gpu/drm/i915/display/intel_dp.c

+6 −6
Original line number Diff line number Diff line
@@ -4199,6 +4199,12 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp, struct intel_connector *connector 
		intel_dp->use_max_params = intel_dp->edp_dpcd[0] < DP_EDP_14;

	}



	/*

	 * If needed, program our source OUI so we can make various Intel-specific AUX services

	 * available (such as HDR backlight controls)

	 */

	intel_dp_init_source_oui(intel_dp);



	/*

	 * This has to be called after intel_dp->edp_dpcd is filled, PSR checks

	 * for SET_POWER_CAPABLE bit in intel_dp->edp_dpcd[1]
@@ -4211,12 +4217,6 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp, struct intel_connector *connector 
	/* Read the eDP DSC DPCD registers */

	intel_dp_detect_dsc_caps(intel_dp, connector);



	/*

	 * If needed, program our source OUI so we can make various Intel-specific AUX services

	 * available (such as HDR backlight controls)

	 */

	intel_dp_init_source_oui(intel_dp);



	return true;

}