Commit 522b9a5d authored by Josip Pavic's avatar Josip Pavic Committed by Alex Deucher
Browse files

drm/amd/display: drain dmub inbox if queue is full 



[Why & How]
If dmub command queuing fails due to the inbox being full, flush the
inbox and resubmit the comamnd. This was previously the default behavior
but was lost in a refactor.

Reviewed-by: default avatarNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: default avatarQingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: default avatarJosip Pavic <Josip.Pavic@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent e97cc04f

drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c

+9 −0
Original line number Diff line number Diff line
@@ -139,6 +139,15 @@ bool dc_dmub_srv_cmd_run_list(struct dc_dmub_srv *dc_dmub_srv, unsigned int coun 
		// Queue command

		status = dmub_srv_cmd_queue(dmub, &cmd_list[i]);



		if (status == DMUB_STATUS_QUEUE_FULL) {

			/* Execute and wait for queue to become empty again. */

			dmub_srv_cmd_execute(dmub);

			dmub_srv_wait_for_idle(dmub, 100000);



			/* Requeue the command. */

			status = dmub_srv_cmd_queue(dmub, &cmd_list[i]);

		}



		if (status != DMUB_STATUS_OK) {

			DC_ERROR("Error queueing DMUB command: status=%d\n", status);

			dc_dmub_srv_log_diagnostic_data(dc_dmub_srv);