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

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[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: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Robin Chen <po-tchen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Robin Chen 2022-06-21 00:18:55 +08:00 committed by Alex Deucher
parent 922e7ee31d
commit e2facd575f
1 changed files with 17 additions and 16 deletions
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33
drivers/gpu/drm/amd/display/modules/power/power_helpers.c
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@ -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;
}
/**