Commit d0ef62bd authored Oct 12, 2023 by Dennis Chan Committed by Alex Deucher Nov 07, 2023

drm/amd/display: Revise Replay Desync Error IRQ handle



[Why]
Current Desync IRQ handler will have some potential do not hit the
desync error case. We change to check both desync error HPD and DPCD.

Signed-off-by: Dennis Chan <dennis.chan@amd.com>
Acked-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Robin Chen <robin.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 77b2c07d

drivers/gpu/drm/amd/display/dc/dc_types.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -1039,6 +1039,7 @@ struct replay_config {
		uint32_t debug_flags; // Replay debug flags
		bool replay_timing_sync_supported; // Replay desync is supported
		bool force_disable_desync_error_check; // Replay desync is supported
		bool received_desync_error_hpd; //Replay Received Desync Error HPD.
		union replay_error_status replay_error_status; // Replay error status
		};

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -210,6 +210,9 @@ static void handle_hpd_irq_replay_sink(struct dc_link *link)
		&replay_error_status.raw,
		sizeof(replay_error_status.raw));

		if (replay_configuration.bits.DESYNC_ERROR_STATUS)
		link->replay_settings.config.received_desync_error_hpd = 1;

		link->replay_settings.config.replay_error_status.bits.LINK_CRC_ERROR =
		replay_error_status.bits.LINK_CRC_ERROR;
		link->replay_settings.config.replay_error_status.bits.DESYNC_ERROR =