drm/amd/display: add vsc update support for test pattern request

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Allow vsc info packet if vsc is supported.  Update vsc based on test
pattern request.  Remove dpg_is_blanked polling, apply hardware global
lock instead to ensure double buffered dpg is updated with vsc in one
frame

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Wenjing Liu 2020-01-22 11:55:48 -05:00 • committed by Alex Deucher

parent 3c1fcc5542

commit e8f9ecf261

1 changed files with 24 additions and 8 deletions

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

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