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drm/amd/display: Restrict multi-disp support for in-game FAMS

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[HOW&WHY]
In multi-monitor cases the VBLANK stretch that is required to align both
monitors may be so large that it may create issues for gaming performance.

Use debug value to restrict in-game FAMS support for multi-disp use case.

Reviewed-by: Harry Vanzylldejong <harry.vanzylldejong@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Iswara Nagulendran <iswara.nagulendran@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Iswara Nagulendran
2024-04-11 14:39:50 -04:00
committed by Alex Deucher
parent 69925c0036
commit ae308e93db
3 changed files with 11 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/amd/display/dc/dc.h
+7 -1
View File
@@ -499,6 +499,12 @@ enum dcc_option {
DCC_HALF_REQ_DISALBE = 2,
};
enum in_game_fams_config {
INGAME_FAMS_SINGLE_DISP_ENABLE, // enable in-game fams
INGAME_FAMS_DISABLE, // disable in-game fams
INGAME_FAMS_MULTI_DISP_ENABLE, //enable in-game fams for multi-display
};
/**
* enum pipe_split_policy - Pipe split strategy supported by DCN
*
@@ -951,7 +957,7 @@ struct dc_debug_options {
/* Enable dmub aux for legacy ddc */
bool enable_dmub_aux_for_legacy_ddc;
bool disable_fams;
bool disable_fams_gaming;
enum in_game_fams_config disable_fams_gaming;
/* FEC/PSR1 sequence enable delay in 100us */
uint8_t fec_enable_delay_in100us;
bool enable_driver_sequence_debug;
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
+3 -1
View File
@@ -580,7 +580,9 @@ struct dc_stream_state *dcn32_can_support_mclk_switch_using_fw_based_vblank_stre
if (!fpo_candidate_stream->allow_freesync)
return NULL;
if (fpo_candidate_stream->vrr_active_variable && dc->debug.disable_fams_gaming)
if (fpo_candidate_stream->vrr_active_variable &&
((dc->debug.disable_fams_gaming == INGAME_FAMS_DISABLE) ||
(context->stream_count > 1 && !(dc->debug.disable_fams_gaming == INGAME_FAMS_MULTI_DISP_ENABLE))))
return NULL;
return fpo_candidate_stream;
drivers/gpu/drm/amd/display/dc/resource/dcn30/dcn30_resource.c
+1 -1
View File
@@ -1996,7 +1996,7 @@ bool dcn30_can_support_mclk_switch_using_fw_based_vblank_stretch(struct dc *dc,
if (!context->streams[0]->allow_freesync)
return false;
if (context->streams[0]->vrr_active_variable && dc->debug.disable_fams_gaming)
if (context->streams[0]->vrr_active_variable && (dc->debug.disable_fams_gaming == INGAME_FAMS_DISABLE))
return false;
context->streams[0]->fpo_in_use = true;