drm/amd/display: Ungate stream before programming registers

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[Why]
Certain tests fail after a fresh reboot. This is caused by writing to
registers prior to ungating the stream we're trying to program.

[How]
Make sure the stream is ungated before writing to its registers.
This also enables power-gating plane resources before init_hw
initializes them.
Additionally, this does some refactoring to move gating/ungating
from enable/disable_plane functions to where stream resources are
enabled/disabled.

Signed-off-by: Gary Kattan <gary.kattan@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Gary Kattan 2019-01-25 15:04:14 -08:00 • committed by Alex Deucher

parent c19bd82f8b

commit 240d09d070

3 changed files with 16 additions and 2 deletions

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6

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

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8

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

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4

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

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