drm/amd: Add ucode DMCU support

Browse source

DMCU (Display Microcontroller Unit) is a GPU chip involved in
eDP features like Adaptive Backlight Modulation and Panel Self
Refresh.

DMCU has two pieces of firmware: the ERAM and the interrupt
vectors, which must be loaded seperately.

To this end, the DMCU firmware has a custom header and parsing
logic similar to MEC, to extract the two ucodes from a single
struct firmware.

Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

David Francis 2018-09-11 13:41:01 -04:00 • committed by Alex Deucher

parent 240cd9a642

commit 01fcfc83fe

2 changed files with 29 additions and 2 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

21

drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c

View file

10

drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.h

View file