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drm/amd: Add DM DMCU support

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

DC is already fully equipped to initialize DMCU as long as the
firmware is loaded.

At the moment only the raven firmware is available.

A single .bin file is loaded by the kernel's loading mechanism
and split into two ucodes according to the header.

DMCU is optional, so if the firmware is not found, no error or
warning is raised.

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 13:49:49 -04:00
committed by Alex Deucher
parent 6b7eab2ce6
commit a94d5569b2
2 changed files with 92 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
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@@ -129,6 +129,8 @@ struct amdgpu_display_manager {
struct drm_atomic_state *cached_state;
struct dm_comressor_info compressor;
const struct firmware *fw_dmcu;
};
struct amdgpu_dm_connector {