drm/amd/display: clean up and simply locking logic

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always take update lock instead of using HW built in update
lock trigger with write to primary_addr_lo.

we will be a little more inefficient with the extra registers
write to lock, but this simplify code and make it always correct.

Will revisit locking optimization once update sequence mature

Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Tony Cheng 2017-02-28 21:30:32 -05:00 • committed by Alex Deucher

parent 2d60ded132

commit d98e5cc2dd

3 changed files with 11 additions and 25 deletions

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38

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

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3

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

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1

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

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