drm/amd/display: Add I2C memory low power support

Browse source

[Why]
The I2C memory blocks should be powered down when they are not in use.
This will reduce power consumption.

[How]
1. Write to I2C_LIGHT_SLEEP_FORCE to put memory in light sleep when
   released
2. Added a debug option to allow this behaviour to be turned off

Signed-off-by: Jacky Liao <ziyu.liao@amd.com>
Acked-by: Bindu Ramamurthy <bindu.r@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Jacky Liao 2020-10-27 10:56:18 -04:00 • committed by Alex Deucher

parent 65e870dfa6

commit af435e3f62

4 changed files with 32 additions and 3 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

1

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

View file

12

drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c

View file

16

drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.h

View file

6

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c

View file