[PATCH v5 8/8] drm/msm/dpu: handle perf mode in _dpu_core_perf_crtc_update_bus()

[Abhinav Kumar]

On 2/8/2025 7:21 PM, Dmitry Baryshkov wrote:
> Move perf mode handling for the bandwidth to
> _dpu_core_perf_crtc_update_bus() rather than overriding per-CRTC data
> and then aggregating known values.
> 
> Note, this changes the fix_core_ab_vote. Previously it would be
> multiplied per the CRTC number, now it will be used directly for
> interconnect voting. This better reflects user requirements in the case
> of different resolutions being set on different CRTCs: instead of using
> the same bandwidth for each CRTC (which is incorrect) user can now
> calculate overall bandwidth required by all outputs and use that value.
> 
> Note #2: this also disables threshold checks for user-entered bandwidth
> values. First of all, it doesn't make sense to fail atomic commits
> because of the debugfs input. Compositors have no way to correlate
> failing commits with debugfs settings. Second, it makes sense to allow
> users to go beyond these values and check whether this makes any
> difference or fixes the issue.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 36 +++++++++++++--------------
>   1 file changed, 18 insertions(+), 18 deletions(-)
> 

Reviewed-by: Abhinav Kumar <quic_abhinavk at quicinc.com>