drm/amd/display: Expand dc to use 16.16 bit backlight

Browse source

[Why] We want to increase precision for backlight setting.
But DC interface takes 8 bit backlight level value only.

[How] DMCU already takes 16 bit backlight level.
Expand the DC interface to take 16.16 bit value.
Max 32 bit backlight value (0xFFFF) will represent
max backlight (100%)

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Anthony Koo 2018-10-12 21:34:32 -04:00 • committed by Alex Deucher

parent a7d8084b58

commit 262485a50f

7 changed files with 80 additions and 79 deletions

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

Download patch file Download diff file Expand all files Collapse all files

8

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

View file

34

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

View file

11

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

View file

92

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

View file

1

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

View file

11

drivers/gpu/drm/amd/display/dc/inc/hw/abm.h

View file

2

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

View file