[PATCH 0/7] Fix MST on amdgpu

[Lyude Paul]

For the whole series:

Reviewed-by: Lyude Paul <lyude at redhat.com>

So glad to have this fixed finally ♥

On Thu, 2023-01-19 at 18:51 -0500, Harry Wentland wrote:
> MST has been broken on amdgpu after a refactor in drm_dp_mst
> code that was aligning drm_dp_mst more closely with the atomic
> model.
> 
> The gitlab issue: https://gitlab.freedesktop.org/drm/amd/-/issues/2171
> 
> This series fixes it.
> 
> It can be found at
> https://gitlab.freedesktop.org/hwentland/linux/-/tree/mst_regression
> 
> A stable-6.1.y rebase can be found at
> https://gitlab.freedesktop.org/hwentland/linux/-/tree/mst_regression_6.1
> 
> Lyude Paul (1):
>   drm/amdgpu/display/mst: Fix mst_state->pbn_div and slot count
>     assignments
> 
> Wayne Lin (6):
>   drm/amdgpu/display/mst: limit payload to be updated one by one
>   drm/amdgpu/display/mst: update mst_mgr relevant variable when long HPD
>   drm/drm_print: correct format problem
>   drm/display/dp_mst: Correct the kref of port.
>   drm/amdgpu/display/mst: adjust the naming of mst_port and port of
>     aconnector
>   drm/amdgpu/display/mst: adjust the logic in 2nd phase of updating
>     payload
> 
>  drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h      |  4 +-
>  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 48 +++++++++---
>  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  4 +-
>  .../drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c |  2 +-
>  .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 16 ++--
>  .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 76 +++++++++++++------
>  .../display/amdgpu_dm/amdgpu_dm_mst_types.c   | 53 ++++++-------
>  drivers/gpu/drm/amd/display/dc/core/dc_link.c | 14 +++-
>  drivers/gpu/drm/display/drm_dp_mst_topology.c |  4 +-
>  include/drm/drm_print.h                       |  2 +-
>  10 files changed, 143 insertions(+), 80 deletions(-)
> 
> --
> 2.39.0
> 

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat