diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/power/power_helpers.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/power/power_helpers.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c index 2b00f334e93d..97928d4c3b9a 100644 --- a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c +++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c @@ -784,3 +784,41 @@ bool dmcu_load_iram(struct dmcu *dmcu, return result; } +/* + * is_psr_su_specific_panel() - check if sink is AMD vendor-specific PSR-SU + * supported eDP device. + * + * @link: dc link pointer + * + * Return: true if AMDGPU vendor specific PSR-SU eDP panel + */ +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; + /* + * 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) { + /* + * 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. + */ + 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; + } + } + + return false; +} |