linux-kernel - Re: [v5] drm/msm/disp/dpu1: add support for dspp sub block flush in sc7280

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Message-ID: <CAD=FV=UT-GmAOYrCBRU0bhGeXU=pOGDbk=Jq7JEk40tyEH0zLA@mail.gmail.com>
Date:   Thu, 29 Sep 2022 09:13:20 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Kalyan Thota <quic_kalyant@...cinc.com>
Cc:     y@...lcomm.com, 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: [v5] drm/msm/disp/dpu1: add support for dspp sub block flush in sc7280

Hi,

On Wed, Sep 14, 2022 at 5:16 AM Kalyan Thota <quic_kalyant@...cinc.com> wrote:
>
> Flush mechanism for DSPP blocks has changed in sc7280 family, it
> allows individual sub blocks to be flushed in coordination with
> master flush control.
>
> Representation: master_flush && (PCC_flush | IGC_flush .. etc )
>
> This change adds necessary support for the above design.
>
> Changes in v1:
> - Few nits (Doug, Dmitry)
> - Restrict sub-block flush programming to dpu_hw_ctl file (Dmitry)
>
> Changes in v2:
> - Move the address offset to flush macro (Dmitry)
> - Seperate ops for the sub block flush (Dmitry)
>
> Changes in v3:
> - Reuse the DPU_DSPP_xx enum instead of a new one (Dmitry)
>
> Changes in v4:
> - Use shorter version for unsigned int (Stephen)
>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c       |  2 +-
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c |  5 +++-
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h |  4 +++
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c     | 35 ++++++++++++++++++++++++--
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h     | 10 ++++++--
>  5 files changed, 50 insertions(+), 6 deletions(-)

Breadcrumbs: though this is tagged in the subject as v5 I think the
newest version is actually "resend v4" [1] which just fixes the
Signed-off-by.

[1] https://lore.kernel.org/r/1663825463-6715-1-git-send-email-quic_kalyant@quicinc.com