Commit e2facd57 authored by Robin Chen's avatar Robin Chen Committed by Alex Deucher
Browse files

drm/amd/display: Disable PSRSU when DSC enabled on the specific sink 



[Why]
Some specific sink is not able to support PSRSU when DSC is turned on.
For this case, fall-back to use PSR1.

Reviewed-by: default avatarAnthony Koo <Anthony.Koo@amd.com>
Acked-by: default avatarSolomon Chiu <solomon.chiu@amd.com>
Signed-off-by: default avatarRobin Chen <po-tchen@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 922e7ee3

drivers/gpu/drm/amd/display/modules/power/power_helpers.c

+17 −16
Original line number Diff line number Diff line
@@ -794,33 +794,34 @@ bool dmcu_load_iram(struct dmcu *dmcu, 
 */

bool is_psr_su_specific_panel(struct dc_link *link)

{

	if (link->dpcd_caps.edp_rev >= DP_EDP_14) {

		if (link->dpcd_caps.psr_info.psr_version >= DP_PSR2_WITH_Y_COORD_ET_SUPPORTED)

			return true;

	bool isPSRSUSupported = false;

	struct dpcd_caps *dpcd_caps = &link->dpcd_caps;



	if (dpcd_caps->edp_rev >= DP_EDP_14) {

		if (dpcd_caps->psr_info.psr_version >= DP_PSR2_WITH_Y_COORD_ET_SUPPORTED)

			isPSRSUSupported = true;

		/*

		 * Some panels will report PSR capabilities over additional DPCD bits.

		 * Such panels are approved despite reporting only PSR v3, as long as

		 * the additional bits are reported.

		 */

		if (link->dpcd_caps.psr_info.psr_version < DP_PSR2_WITH_Y_COORD_IS_SUPPORTED)

			return false;



		if (link->dpcd_caps.sink_dev_id == DP_BRANCH_DEVICE_ID_001CF8) {

		if (dpcd_caps->sink_dev_id == DP_BRANCH_DEVICE_ID_001CF8) {

			/*

			 * FIXME:

			 * This is the temporary workaround to disable PSRSU when system turned on

			 * DSC function on the sepcific sink. Once the PSRSU + DSC is fixed, this

			 * condition should be removed.

			 * DSC function on the sepcific sink.

			 */

			if (link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_SUPPORT)

				return false;



			if (link->dpcd_caps.psr_info.force_psrsu_cap == 0x1)

				return true;

			if (dpcd_caps->psr_info.psr_version < DP_PSR2_WITH_Y_COORD_IS_SUPPORTED)

				isPSRSUSupported = false;

			else if (dpcd_caps->dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_SUPPORT &&

				((dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x08) ||

				(dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x07)))

				isPSRSUSupported = false;

			else if (dpcd_caps->psr_info.force_psrsu_cap == 0x1)

				isPSRSUSupported = true;

		}

	}



	return false;

	return isPSRSUSupported;

}



/**