linux-kernel - Re: [PATCH 02/16] drm/msm/dpu: add formats check for writeback encoder

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Message-ID: <CAA8EJpoNqWTspHADS6PKKMLcfHCKhgbZTXO39tueSZE+a64MwQ@mail.gmail.com>
Date:   Thu, 31 Aug 2023 02:39:59 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Abhinav Kumar <quic_abhinavk@...cinc.com>
Cc:     freedreno@...ts.freedesktop.org, Rob Clark <robdclark@...il.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, quic_jesszhan@...cinc.com,
        quic_parellan@...cinc.com, quic_khsieh@...cinc.com,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/16] drm/msm/dpu: add formats check for writeback encoder

On Thu, 31 Aug 2023 at 01:49, Abhinav Kumar <quic_abhinavk@...cinc.com> wrote:
>
> In preparation of adding more formats to dpu writeback add

I think it is `preparation to'

Other than that:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

> format validation to it to fail any unsupported formats.
>
> Fixes: d7d0e73f7de3 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback")
> Signed-off-by: Abhinav Kumar <quic_abhinavk@...cinc.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 284a88060221..6a1f8e34f18a 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
> @@ -238,6 +238,7 @@ 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);
> @@ -274,6 +275,12 @@ static int dpu_encoder_phys_wb_atomic_check(
>                 return -EINVAL;
>         }
>
> +       ret = drm_atomic_helper_check_wb_encoder_state(phys_enc->parent, conn_state);
> +       if (ret < 0) {
> +               DPU_ERROR("invalid pixel format %p4cc\n", &fb->format->format);
> +               return ret;
> +       }
> +
>         return 0;
>  }
>
> --
> 2.40.1
>


-- 
With best wishes
Dmitry