Re: [PATCH 00/16] drm/i915/dp: Clean up link BW/DSC slice config computation (fixes)

[Imre Deak <imre.deak@intel.com>]

Hi Thomas, Maarten, Maxime,

could you ack merging patch 1 and 2 in this patchset containing changes
in drm_dp_helper.c via the Intel trees? They fix an issue in the i915/xe
drivers' DP DSC slice-count handling and do not affect other drivers.

Thanks,
Imre

On Mon, Dec 15, 2025 at 09:23:40PM +0200, Imre Deak wrote:
> This is the first part of patchset [1] containing only the fixes for the
> link BW and DSC slice computation. The remaining patches in [1] refactor
> the link BW and DSC slice computation simplifying these, to be sent as a
> follow-up to this patchset.
> 
> I moved patches 13-15 in [1] later in the patchset to be sent as part of
> the follow-up, as these patches are not a dependency for the fixes in
> this patchset.
> 
> [1] https://lore.kernel.org/all/20251127175023.1522538-1-imre.deak@intel.com
> 
> Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
> Cc: Luca Coelho <luciano.coelho@intel.com>
> Cc: Jouni Högander <jouni.hogander@intel.com>
> Cc: Vinod Govindapillai <vinod.govindapillai@intel.com>
> 
> Imre Deak (16):
>   drm/dp: Parse all DSC slice count caps for eDP 1.5
>   drm/dp: Add drm_dp_dsc_sink_slice_count_mask()
>   drm/i915/dp: Fix DSC sink's slice count capability check
>   drm/i915/dp: Return a fixed point BPP value from intel_dp_output_bpp()
>   drm/i915/dp: Use a mode's crtc_clock vs. clock during state
>     computation
>   drm/i915/dp: Factor out intel_dp_link_bw_overhead()
>   drm/i915/dp: Fix BW check in is_bw_sufficient_for_dsc_config()
>   drm/i915/dp: Use the effective data rate for DP BW calculation
>   drm/i915/dp: Use the effective data rate for DP compressed BW
>     calculation
>   drm/i915/dp: Account with MST, SSC BW overhead for uncompressed DP-MST
>     stream BW
>   drm/i915/dp: Account with DSC BW overhead for compressed DP-SST stream
>     BW
>   drm/i915/dp: Account with pipe joiner max compressed BPP limit for
>     DP-MST and eDP
>   drm/i915/dp: Fail state computation for invalid min/max link BPP
>     values
>   drm/i915/dp: Fail state computation for invalid max throughput BPP
>     value
>   drm/i915/dp: Fail state computation for invalid max sink compressed
>     BPP value
>   drm/i915/dp: Fail state computation for invalid DSC source input BPP
>     values
> 
>  drivers/gpu/drm/display/drm_dp_helper.c       | 103 ++++++---
>  drivers/gpu/drm/i915/display/intel_dp.c       | 211 ++++++++++++------
>  drivers/gpu/drm/i915/display/intel_dp.h       |   9 +-
>  .../drm/i915/display/intel_dp_link_training.c |   4 +-
>  drivers/gpu/drm/i915/display/intel_dp_mst.c   |  33 ++-
>  include/drm/display/drm_dp_helper.h           |   3 +
>  6 files changed, 234 insertions(+), 129 deletions(-)
> 
> -- 
> 2.49.1
>