drm/amd/display: Turn on phantom OTG before disabling phantom pipe

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[Description]
- Proper phantom pipe disable sequence was missing in
  commit_planes_for_stream
- If disabling phantom pipe, turn on phantom OTG first, and turn
  off the phantom OTG after the plane is disabled
- Also update sequence for enabling / disabling phantom streams
  (apply_ctx_to_hw). When enabling phantom pipes, enable before
  doing front end programming for phantom pipes. If disabling
  phantom pipes, disable after front end programming (i.e. after
  phantom plane disable)
- TODO: Still need to properly handle transition case when a phantom
  pipe is transitioned directly into a real pipe (need to fully disable
  the phantom pipe first)

Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Alvin Lee 2022-12-07 20:19:49 -05:00 • committed by Alex Deucher

parent cbd8f20b48

commit a5b50a0cbf

6 changed files with 88 additions and 34 deletions

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58

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

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24

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

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36

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c

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2

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.h

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1

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_init.c

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1

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

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