[PATCH 00/23] USB4 DP tunneling

[Harry Wentland]

On 2021-10-04 10:40, Wayne Lin wrote:
> These series patches are for supporting USB4 DP tunneling feature.
> 

Can you provide a description (with or without diagrams) of what
DP4 tunneling is and some of the key parts of how it works?

Does this patchset have dependencies on patches in the USB
subsystem?

Harry

> ---
> 
> Jimmy Kizito (14):
>   drm/amd/display: Update link encoder object creation.
>   drm/amd/display: Support USB4 dynamic link encoder selection.
>   drm/amd/display: Support USB4 for display endpoint control path.
>   drm/amd/display: Support DP tunneling when DPRX detection
>   drm/amd/display: Update training parameters for DPIA links
>   drm/amd/display: Support USB4 when DP link training.
>   drm/amd/display: Implement DPIA training loop
>   drm/amd/display: Implement DPIA link configuration
>   drm/amd/display: Implement DPIA clock recovery phase
>   drm/amd/display: Implement DPIA equalisation phase
>   drm/amd/display: Implement end of training for hop in DPIA display
>     path
>   drm/amd/display: Read USB4 DP tunneling data from DPCD.
>   drm/amd/display: Fix DIG_HPD_SELECT for USB4 display endpoints.
>   drm/amd/display: Add debug flags for USB4 DP link training.
> 
> Jude Shih (4):
>   drm/amd/display: Support for SET_CONFIG processing with DMUB
>   drm/amd/display: Deadlock/HPD Status/Crash Bug Fix
>   drm/amd/display: Fix USB4 Aux via DMUB terminate unexpectedly
>   drm/amd/display: USB4 bring up set correct address
> 
> Meenakshikumar Somasundaram (5):
>   drm/amd/display: USB4 DPIA enumeration and AUX Tunneling
>   drm/amd/display: Support for DMUB HPD and HPD RX interrupt handling
>   drm/amd/display: Support for SET_CONFIG processing with DMUB
>   drm/amd/display: Add dpia debug options
>   drm/amd/display: Fix for access for ddc pin and aux engine.
> 
>  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 106 +-
>  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  12 +-
>  .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c |  17 +-
>  drivers/gpu/drm/amd/display/dc/Makefile       |   2 +-
>  drivers/gpu/drm/amd/display/dc/core/dc.c      | 179 +++-
>  drivers/gpu/drm/amd/display/dc/core/dc_link.c |  81 +-
>  .../gpu/drm/amd/display/dc/core/dc_link_ddc.c |   9 +-
>  .../gpu/drm/amd/display/dc/core/dc_link_dp.c  |  36 +-
>  .../drm/amd/display/dc/core/dc_link_dpia.c    | 945 ++++++++++++++++++
>  drivers/gpu/drm/amd/display/dc/core/dc_stat.c |   8 +
>  drivers/gpu/drm/amd/display/dc/dc.h           |  22 +
>  drivers/gpu/drm/amd/display/dc/dc_dp_types.h  |  31 +
>  drivers/gpu/drm/amd/display/dc/dc_types.h     |   1 +
>  drivers/gpu/drm/amd/display/dc/dce/dce_aux.c  |   3 +
>  .../display/dc/dcn31/dcn31_dio_link_encoder.c | 126 ++-
>  .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    |   6 +
>  .../drm/amd/display/dc/dcn31/dcn31_resource.c |   7 +
>  drivers/gpu/drm/amd/display/dc/dm_helpers.h   |   5 +
>  .../gpu/drm/amd/display/dc/inc/core_types.h   |   3 +
>  .../gpu/drm/amd/display/dc/inc/dc_link_ddc.h  |   1 +
>  .../gpu/drm/amd/display/dc/inc/dc_link_dpia.h |  98 ++
>  drivers/gpu/drm/amd/display/dc/inc/resource.h |   1 +
>  drivers/gpu/drm/amd/display/dc/os_types.h     |   1 +
>  drivers/gpu/drm/amd/display/dmub/dmub_srv.h   |   3 +
>  .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h   | 113 ++-
>  .../gpu/drm/amd/display/dmub/src/dmub_dcn31.c |   1 +
>  .../drm/amd/display/dmub/src/dmub_srv_stat.c  |  16 +
>  .../gpu/drm/amd/display/include/dal_asic_id.h |   2 +-
>  28 files changed, 1793 insertions(+), 42 deletions(-)
>  create mode 100644 drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c
>  create mode 100644 drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h
>