drm/amd/display: Change power gating off sequence to fix hang

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Power off plane clear all the reg values includes cursor.
When OS call set cursor position, cursor address reg is cleared,
results in system hard hang.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Yongqiang Sun 2017-01-27 10:29:01 -05:00 • committed by Alex Deucher

parent 75a7475576

commit bb9042da8e

1 changed files with 5 additions and 2 deletions

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

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