drm/amd/display: Add trigger connector unplug

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[why]
We need a virtual tool that would emulate a physical
connector unplug to usermode, while connector is
still physically plugged in.

[how]
Added a new option to debugfs entry "trigger_hotplug".
It emulates hotplug irq handling scenario by clearing
DC and DM connector states.
It can be triggered with the following command:

	echo 0 > /sys/kernel/debug/dri/0/DP-X/trigger_hotplug

Signed-off-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Eryk Brol 2020-08-27 15:45:06 -04:00 • committed by Alex Deucher

parent 0749ddeb7d

commit 6b29bb3737

1 changed files with 29 additions and 2 deletions

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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

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