linux-kernel - Re: [v1] drm/msm/disp/dpu1: add support for hierarchical flush for dspp in sc7280

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Message-ID: <CAD=FV=Vo8GMLi=QfV=HXyVf=PTsOkntrc+OTsnQ5jMWYxSDFuQ@mail.gmail.com>
Date:   Thu, 4 Aug 2022 07:16:57 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Kalyan Thota <quic_kalyant@...cinc.com>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Rob Clark <robdclark@...il.com>,
        Stephen Boyd <swboyd@...omium.org>,
        Vinod Polimera <quic_vpolimer@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        "Abhinav Kumar (QUIC)" <quic_abhinavk@...cinc.com>
Subject: Re: [v1] drm/msm/disp/dpu1: add support for hierarchical flush for
 dspp in sc7280

On Thu, Aug 4, 2022 at 3:29 AM Kalyan Thota <quic_kalyant@...cinc.com> wrote:
>
> +static void dpu_hw_ctl_set_dspp_hierarchical_flush(struct dpu_hw_ctl *ctx,
> +       enum dpu_dspp dspp, enum dpu_dspp_sub_blk dspp_sub_blk)
> +{
> +       uint32_t flushbits = 0, active = 0;

nit: don't init to 0 since you just override below.


> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
> index ac15444..8ecab91 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
> @@ -160,6 +160,9 @@ struct dpu_hw_ctl_ops {
>         uint32_t (*get_bitmask_dspp)(struct dpu_hw_ctl *ctx,
>                 enum dpu_dspp blk);
>
> +       void (*set_dspp_hierarchical_flush)(struct dpu_hw_ctl *ctx,
> +               enum dpu_dspp blk, enum dpu_dspp_sub_blk dspp_sub_blk);
> +

Given that most of the items in this list have kernel-doc comments
explaining them, probably you should have one for your new one too.

-Doug