Re: [Intel-gfx] [PATCH v2 00/11] drm/i915: Fix UHBR data, link M/N/TU and PBN values

[Jani Nikula <jani.nikula@linux.intel.com>]

On Thu, 16 Nov 2023, Imre Deak <imre.deak@intel.com> wrote:
> This is v2 of [1], with the following changes:
> - Store the pbn_div value in fixed point format.
> - Fix PBN calculation in patch 8.
> - Reuse intel_dp_max_data_rate(), intel_dp_effective_data_rate() in
>   intel_link_compute_m_n() (Jani).
>
> [1] https://lore.kernel.org/all/20231113201110.510724-1-imre.deak@intel.com
>
> Cc: Arun R Murthy <arun.r.murthy@intel.com>
> Cc: Jani Nikula <jani.nikula@linux.intel.com>
> Cc: Lyude Paul <lyude@redhat.com>
>
> Imre Deak (11):
>   drm/dp_mst: Store the MST PBN divider value in fixed point format
>   drm/dp_mst: Fix PBN divider calculation for UHBR rates
>   drm/dp_mst: Add kunit tests for drm_dp_get_vc_payload_bw()

Maarten, Maxime, Thomas, ack for merging these three via drm-intel-next?

Imre, I note that said patches were Cc: dri-devel, but for future
reference please Cc: the entire series to dri-devel when you include
dependencies that you plan to merge via drm-intel.

BR,
Jani.


>   drm/i915/dp: Replace intel_dp_is_uhbr_rate() with
>     drm_dp_is_uhbr_rate()
>   drm/i915/dp: Account for channel coding efficiency on UHBR links
>   drm/i915/dp: Fix UHBR link M/N values
>   drm/i915/dp_mst: Calculate the BW overhead in
>     intel_dp_mst_find_vcpi_slots_for_bpp()
>   drm/i915/dp_mst: Fix PBN / MTP_TU size calculation for UHBR rates
>   drm/i915/dp: Report a rounded-down value as the maximum data rate
>   drm/i915/dp: Simplify intel_dp_max_data_rate()
>   drm/i915/dp: Reuse intel_dp_{max,effective}_data_rate in
>     intel_link_compute_m_n()
>
>  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |   5 +-
>  .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c |   3 +-
>  .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |   5 +-
>  drivers/gpu/drm/display/drm_dp_mst_topology.c |  31 +++-
>  drivers/gpu/drm/i915/display/intel_display.c  |  51 ++----
>  drivers/gpu/drm/i915/display/intel_dp.c       |  78 +++++++---
>  drivers/gpu/drm/i915/display/intel_dp.h       |   5 +-
>  drivers/gpu/drm/i915/display/intel_dp_mst.c   |  55 +++++--
>  drivers/gpu/drm/nouveau/dispnv50/disp.c       |   6 +-
>  .../gpu/drm/tests/drm_dp_mst_helper_test.c    | 145 ++++++++++++++++++
>  include/drm/display/drm_dp_helper.h           |  13 ++
>  include/drm/display/drm_dp_mst_helper.h       |   7 +-
>  12 files changed, 311 insertions(+), 93 deletions(-)

-- 
Jani Nikula, Intel