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

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[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: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Josip Pavic <Josip.Pavic@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Josip Pavic 2023-03-24 15:31:10 -04:00 committed by Alex Deucher
parent e97cc04fe0
commit 522b9a5d58
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
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@ -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);