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drm/amd/display: Add debugfs to repress HPD and HPR_RX IRQs

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[Why]
For debugging reasons it can be beneficial to disable any hotplug and DP shortpulse interrupt handling.

[How]
Expose a debugfs to set a flag to bypass HPD IRQ handling and skip IRQ handling if flag is set.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Bindu Ramamurthy <bindur12@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry Wentland
2020-10-02 13:32:00 -04:00
committed by Alex Deucher
parent 83d76eeb7b
commit b972b4f913
3 changed files with 45 additions and 2 deletions
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3
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
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@@ -1,5 +1,5 @@
/*
* Copyright 2015 Advanced Micro Devices, Inc.
* Copyright (C) 2015-2020 Advanced Micro Devices, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -410,6 +410,7 @@ struct amdgpu_display_manager {
*/
struct amdgpu_encoder mst_encoders[AMDGPU_DM_MAX_CRTC];
bool force_timing_sync;
bool disable_hpd_irq;
bool dmcub_trace_event_en;
/**
* @da_list: