drm/amd/display: use previous aux timeout val if no repeater.

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[Why]
The aux timeout value is not default before reading link cap.
Setting it to default when lttpr is not enabled causes some monitor
not to light up.

[How]
Read the aux engine timeout value before setting it to extended.
Set the aux engine timeout to its previous value if no lttpr.

Signed-off-by: abdoulaye berthe <abdoulaye.berthe@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

abdoulaye berthe 2019-09-19 15:51:00 -04:00 • committed by Alex Deucher

parent 64c12b733f

commit 9bffd0806d

6 changed files with 52 additions and 22 deletions

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13

drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c

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9

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

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46

drivers/gpu/drm/amd/display/dc/dce/dce_aux.c

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2

drivers/gpu/drm/amd/display/dc/dce/dce_aux.h

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2

drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h

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2

drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h

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