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From:   Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Date:   Wed, 13 Dec 2023 00:03:57 +0200
Message-ID: <CAA8EJpooSO3vR+Kp+XHgwOwQy43CKdUsOJOD3LiQ1LxbyW_39w@mail.gmail.com>
Subject: Re: [PATCH v4 01/15] drm/msm/dpu: add formats check for writeback encoder
To:     Abhinav Kumar <quic_abhinavk@quicinc.com>
Cc:     freedreno@lists.freedesktop.org, Rob Clark <robdclark@gmail.com>,
        Sean Paul <sean@poorly.run>,
        Marijn Suijten <marijn.suijten@somainline.org>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        dri-devel@lists.freedesktop.org, seanpaul@chromium.org,
        quic_jesszhan@quicinc.com, linux-arm-msm@vger.kernel.org,
        linux-kernel@vger.kernel.org
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On Tue, 12 Dec 2023 at 23:30, Dmitry Baryshkov
<dmitry.baryshkov@linaro.org> wrote:
>
> On Tue, 12 Dec 2023 at 22:53, Abhinav Kumar <quic_abhinavk@quicinc.com> wrote:
> >
> > In preparation for adding more formats to dpu writeback add
> > format validation to it to fail any unsupported formats.
> >
> > changes in v4:
> >         - change the failure message of the API
> >           drm_atomic_helper_check_wb_connector_state() to a generic
> >           one in case it checks more errors later and moreoever it
> >           already has debug message to indicate its failure
> >         - change the corresponding DPU_ERROR to DPU_DEBUG in-line with
> >           other atomic_check failure messages
> >
> > changes in v3:
> >         - rebase on top of msm-next
> >         - replace drm_atomic_helper_check_wb_encoder_state() with
> >           drm_atomic_helper_check_wb_connector_state() due to the
> >           rebase
> >
> > changes in v2:
> >         - correct some grammar in the commit text
> >
> > Fixes: d7d0e73f7de3 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback")
> > Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
> > ---
> >  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> > index bb94909caa25..4953d87affa1 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
> > @@ -272,6 +272,7 @@ static int dpu_encoder_phys_wb_atomic_check(
> >  {
> >         struct drm_framebuffer *fb;
> >         const struct drm_display_mode *mode = &crtc_state->mode;
> > +       int ret;
> >
> >         DPU_DEBUG("[atomic_check:%d, \"%s\",%d,%d]\n",
> >                         phys_enc->hw_wb->idx, mode->name, mode->hdisplay, mode->vdisplay);
> > @@ -308,6 +309,12 @@ static int dpu_encoder_phys_wb_atomic_check(
> >                 return -EINVAL;
> >         }
> >
> > +       ret = drm_atomic_helper_check_wb_connector_state(conn_state->connector, conn_state->state);
> > +       if (ret < 0) {
> > +               DPU_DEBUG("wb check connector state failed ret = %d\n", ret);
>
> We already have a debug message in
> drm_atomic_helper_check_wb_connector_state(). Can we please drop this
> one?

If you don't mind, I can just drop it while applying

>
> > +               return ret;
> > +       }
> > +
> >         return 0;
> >  }
> >
> > --
> > 2.40.1
> >
>
>
> --
> With best wishes
> Dmitry


-- 
With best wishes
Dmitry