On Tue, 19 Mar 2024 at 22:34, Abhinav Kumar <quic_abhin...@quicinc.com> wrote:
>
>
>
> On 3/13/2024 6:10 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.
> >
> > Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
> > ---
> > drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 39
> > +++++++++++++--------------
> > 1 file changed, 19 insertions(+), 20 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
> > b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
> > index 87b892069526..ff2942a6a678 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
> > @@ -118,21 +118,9 @@ static void _dpu_core_perf_calc_crtc(const struct
> > dpu_core_perf *core_perf,
> > return;
> > }
> >
> > - memset(perf, 0, sizeof(struct dpu_core_perf_params));
> > -
> > - if (core_perf->perf_tune.mode == DPU_PERF_MODE_MINIMUM) {
> > - perf->bw_ctl = 0;
> > - perf->max_per_pipe_ib = 0;
> > - perf->core_clk_rate = 0;
> > - } else if (core_perf->perf_tune.mode == DPU_PERF_MODE_FIXED) {
> > - perf->bw_ctl = core_perf->fix_core_ab_vote;
> > - perf->max_per_pipe_ib = core_perf->fix_core_ib_vote;
> > - perf->core_clk_rate = core_perf->fix_core_clk_rate;
> > - } else {
> > - perf->bw_ctl = _dpu_core_perf_calc_bw(perf_cfg, crtc);
> > - perf->max_per_pipe_ib = perf_cfg->min_dram_ib;
> > - perf->core_clk_rate = _dpu_core_perf_calc_clk(perf_cfg, crtc,
> > state);
> > - }
> > + perf->bw_ctl = _dpu_core_perf_calc_bw(perf_cfg, crtc);
> > + perf->max_per_pipe_ib = perf_cfg->min_dram_ib;
> > + perf->core_clk_rate = _dpu_core_perf_calc_clk(perf_cfg, crtc, state);
> >
> > DRM_DEBUG_ATOMIC(
> > "crtc=%d clk_rate=%llu core_ib=%llu core_ab=%llu\n",
> > @@ -233,18 +221,29 @@ static int _dpu_core_perf_crtc_update_bus(struct
> > dpu_kms *kms,
> > {
> > struct dpu_core_perf_params perf = { 0 };
> > int i, ret = 0;
> > - u64 avg_bw;
> > + u32 avg_bw;
> > + u32 peak_bw;
> >
> > if (!kms->num_paths)
> > return 0;
> >
> > - dpu_core_perf_aggregate(crtc->dev, dpu_crtc_get_client_type(crtc),
> > &perf);
> > + if (kms->perf.perf_tune.mode == DPU_PERF_MODE_MINIMUM) {
> > + avg_bw = 0;
> > + peak_bw = 0;
> > + } else if (kms->perf.perf_tune.mode == DPU_PERF_MODE_FIXED) {
> > + avg_bw = kms->perf.fix_core_ab_vote;
> > + peak_bw = kms->perf.fix_core_ib_vote;
> > + } else {
> > + dpu_core_perf_aggregate(crtc->dev,
> > dpu_crtc_get_client_type(crtc), &perf);
>
> Where is this function dpu_core_perf_aggregate() defined? I dont see it
> in msm-next
In the previous patch.
>
> > +
> > + avg_bw = div_u64(perf.bw_ctl, 1000); /*Bps_to_icc*/
> > + peak_bw = perf.max_per_pipe_ib;
> > + }
> >
> > - avg_bw = perf.bw_ctl;
> > - do_div(avg_bw, (kms->num_paths * 1000)); /*Bps_to_icc*/
> > + avg_bw /= kms->num_paths;
> >
> > for (i = 0; i < kms->num_paths; i++)
> > - icc_set_bw(kms->path[i], avg_bw, perf.max_per_pipe_ib);
> > + icc_set_bw(kms->path[i], avg_bw, peak_bw);
> >
> > return ret;
> > }
> >
--
With best wishes
Dmitry
