drm/amd/display: Add MPC memory shutdown support for DCN3

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[Why]
The MPC memory blocks in DCN3 should be powered down completely when
they are not in use. This will reduce power consumption.

[How]
This commits changes behaviour for dcn3 and does the following:
1. Write to MPC_RMU<X>_LOW_PWR_MODE and MPCC_OGAM_MEM_LOW_PWR_MODE to
   automatically shut down memory when not in use
2. mpc3_power_on_shaper_3dlut and mpc3_power_on_ogam_lut are called
   to disable force power on when configuration finishes
3. Added a debug option to allow this behaviour to be turned off

Signed-off-by: Jacky Liao <ziyu.liao@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Jacky Liao 2020-10-13 18:43:34 -04:00 • committed by Alex Deucher

parent 585e7cedf3

commit 3e5b4cdf26

3 changed files with 63 additions and 3 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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1

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

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56

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c

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9

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.h

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