drm/amd/display: MST support for DPIA

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[Why]
- DPIA MST slot registers are not programmed during payload
allocation and hence MST does not work with DPIA.
- HPD RX interrupts are not handled for DPIA.

[How]
- Added inbox command to program the MST slots whenever
  payload allocation happens for DPIA links.
- Added support for handling HPD RX interrupts

Signed-off-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Meenakshikumar Somasundaram 2021-09-02 14:09:30 -04:00 • committed by Alex Deucher

parent 839e59a343

commit 139a33112f

4 changed files with 111 additions and 0 deletions

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54

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

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28

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

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6

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

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23

drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h

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