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| author | Michael Strauss <michael.strauss@amd.com> | 2023-04-03 11:43:50 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-04-24 18:32:13 -0400 |
| commit | 9fa8cc0c444562fa19e20ca20f1c70e15b9d8c13 (patch) | |
| tree | 9bebc740391f00f20b21807b0196d3b0ea7bfa54 /drivers/gpu/drm/amd/display/dc/link | |
| parent | 550e5d23f14784e2a625c25fe0c9d498589c9256 (diff) | |
| download | linux-stable-9fa8cc0c444562fa19e20ca20f1c70e15b9d8c13.tar.gz linux-stable-9fa8cc0c444562fa19e20ca20f1c70e15b9d8c13.tar.bz2 linux-stable-9fa8cc0c444562fa19e20ca20f1c70e15b9d8c13.zip | |
drm/amd/display: Convert Delaying Aux-I Disable To Monitor Patch
[WHY]
32ms delay was added to resolve issue with a specific sink, however this same
delay also introduces erroneous link training failures with certain sink
devices.
[HOW]
Only apply the 32ms delay for offending devices instead of globally.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c index 5731c4b61f9f..fb6c938c6dab 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c @@ -233,7 +233,8 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence_legacy( link->dpcd_caps.lttpr_caps.phy_repeater_cnt); const uint8_t vendor_lttpr_write_data_intercept_en[4] = {0x1, 0x55, 0x63, 0x0}; const uint8_t vendor_lttpr_write_data_intercept_dis[4] = {0x1, 0x55, 0x63, 0x68}; - uint32_t pre_disable_intercept_delay_ms = link->dc->debug.fixed_vs_aux_delay_config_wa; + uint32_t pre_disable_intercept_delay_ms = + link->local_sink->edid_caps.panel_patch.delay_disable_aux_intercept_ms; uint8_t vendor_lttpr_write_data_vs[4] = {0x1, 0x51, 0x63, 0x0}; uint8_t vendor_lttpr_write_data_pe[4] = {0x1, 0x52, 0x63, 0x0}; uint32_t vendor_lttpr_write_address = 0xF004F; @@ -259,7 +260,7 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence_legacy( /* Certain display and cable configuration require extra delay */ if (offset > 2) - pre_disable_intercept_delay_ms = link->dc->debug.fixed_vs_aux_delay_config_wa * 2; + pre_disable_intercept_delay_ms = pre_disable_intercept_delay_ms * 2; } /* Vendor specific: Reset lane settings */ @@ -380,7 +381,8 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence_legacy( 0); /* Vendor specific: Disable intercept */ for (i = 0; i < max_vendor_dpcd_retries; i++) { - msleep(pre_disable_intercept_delay_ms); + if (pre_disable_intercept_delay_ms != 0) + msleep(pre_disable_intercept_delay_ms); dpcd_status = core_link_write_dpcd( link, vendor_lttpr_write_address, @@ -591,9 +593,11 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence( const uint8_t vendor_lttpr_write_data_adicora_eq1[4] = {0x1, 0x55, 0x63, 0x2E}; const uint8_t vendor_lttpr_write_data_adicora_eq2[4] = {0x1, 0x55, 0x63, 0x01}; const uint8_t vendor_lttpr_write_data_adicora_eq3[4] = {0x1, 0x55, 0x63, 0x68}; - uint32_t pre_disable_intercept_delay_ms = link->dc->debug.fixed_vs_aux_delay_config_wa; uint8_t vendor_lttpr_write_data_vs[4] = {0x1, 0x51, 0x63, 0x0}; uint8_t vendor_lttpr_write_data_pe[4] = {0x1, 0x52, 0x63, 0x0}; + uint32_t pre_disable_intercept_delay_ms = + link->local_sink->edid_caps.panel_patch.delay_disable_aux_intercept_ms; + uint32_t vendor_lttpr_write_address = 0xF004F; enum link_training_result status = LINK_TRAINING_SUCCESS; @@ -618,7 +622,7 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence( /* Certain display and cable configuration require extra delay */ if (offset > 2) - pre_disable_intercept_delay_ms = link->dc->debug.fixed_vs_aux_delay_config_wa * 2; + pre_disable_intercept_delay_ms = pre_disable_intercept_delay_ms * 2; } /* Vendor specific: Reset lane settings */ @@ -739,7 +743,8 @@ enum link_training_result dp_perform_fixed_vs_pe_training_sequence( 0); /* Vendor specific: Disable intercept */ for (i = 0; i < max_vendor_dpcd_retries; i++) { - msleep(pre_disable_intercept_delay_ms); + if (pre_disable_intercept_delay_ms != 0) + msleep(pre_disable_intercept_delay_ms); dpcd_status = core_link_write_dpcd( link, vendor_lttpr_write_address, |