drm/amd/display: Fixed dim around 1sec when resume from S3 (v2)

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root cause:
DMCU try to perform a smoothness brightness change.Incorrect initial
brightness level causes the 1 sec dim.
Change:
Cache brightness level in stream, and clear it when edp backlight on.
If brightness level in stream is 0, set brightness with ramp value is 0.
DMCU will set the brightness without smoothness transition.

v2: squash in null pointer fix (Harry)

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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This commit is contained in:

Yongqiang Sun 2018-03-05 10:28:34 -05:00 • committed by Alex Deucher

parent 2a54bd6e08

commit 14d6f64436

3 changed files with 11 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

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7

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

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1

drivers/gpu/drm/amd/display/dc/dc_stream.h

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4

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

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