drm/amd/display: Optimize link power-down when link powered externally

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[Why]
When an eDP panel is powered externally by a different GPU, we don't need
to wait for hardware sequencing delays when powering down a link, as the
display is not dependent on the GPU being powered down.

[How]
This commit adds a variable 'link_powered_externally' to indicate when a
link is being powered by another GPU.

Tested-by: Daniel Wheeler <Daniel.Wheeler@amd.com>
Reviewed-by: Felipe Clark <felipe.clark@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Tony Tascioglu <tony.tascioglu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Tony Tascioglu 2022-11-25 17:31:44 -05:00 • committed by Alex Deucher

parent 762e8febab

commit 3351ce5d8c

7 changed files with 29 additions and 15 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

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5

drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c

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14

drivers/gpu/drm/amd/display/dc/bios/command_table2.c

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3

drivers/gpu/drm/amd/display/dc/bios/command_table2.h

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3

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

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2

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

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14

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

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3

drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h

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