Commit b65cf4ba authored Sep 05, 2025 by Allen Li Committed by Alex Deucher Sep 23, 2025

drm/amd/display: Add fast sync field in ultra sleep more for DMUB



[Why&How]
We need to inform DMUB whether fast sync in ultra sleep mode is supported,
so that it can disable desync error detection when the it is not enabled.
This helps prevent unexpected desync errors when transitioning out of
ultra sleep mode.

Add fast sync in ultra sleep mode field in replay copy setting command.

Reviewed-by: Robin Chen <robin.chen@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Allen Li <wei-guang.li@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 9e5d4a5e

drivers/gpu/drm/amd/display/dc/dce/dmub_replay.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -169,6 +169,7 @@ static bool dmub_replay_copy_settings(struct dmub_replay *dmub,
		copy_settings_data->max_deviation_line = link->dpcd_caps.pr_info.max_deviation_line;
		copy_settings_data->smu_optimizations_en = link->replay_settings.replay_smu_opt_enable;
		copy_settings_data->replay_timing_sync_supported = link->replay_settings.config.replay_timing_sync_supported;
		copy_settings_data->replay_support_fast_resync_in_ultra_sleep_mode = link->replay_settings.config.replay_support_fast_resync_in_ultra_sleep_mode;

		copy_settings_data->debug.bitfields.enable_ips_visual_confirm = dc->dc->debug.enable_ips_visual_confirm;

drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h

+5 −1

Original line number	Diff line number	Diff line
		@@ -4142,10 +4142,14 @@ struct dmub_cmd_replay_copy_settings_data {
		* @hpo_link_enc_inst: HPO link encoder instance
		*/
		uint8_t hpo_link_enc_inst;
		/**
		* Determines if fast sync in ultra sleep mode is enabled/disabled.
		*/
		uint8_t replay_support_fast_resync_in_ultra_sleep_mode;
		/**
		* @pad: Align structure to 4 byte boundary.
		*/
		uint8_t pad[2];
		uint8_t pad[1];
		};