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 <20211213160742.744333-1-markyacoub@chromium.org> <CAAOTY_81KaSEWAqTWgzmshDZ9BefO3pNrqQwWbB01E4L0+mqzg@mail.gmail.com>
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From:   Mark Yacoub <markyacoub@chromium.org>
Date:   Tue, 14 Dec 2021 10:26:06 -0500
Message-ID: <CAJUqKUp_Q39S912_epc3pfT-uc3DN=u4sCSdLm9VetwqdH_Pzw@mail.gmail.com>
Subject: Re: [PATCH v2] drm/mediatek: Set the default value of rotation to DRM_MODE_ROTATE_0
To:     Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc:     "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>,
        Sean Paul <seanpaul@chromium.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Jason-JH Lin <jason-jh.lin@mediatek.com>, tzungbi@google.com,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        DRI Development <dri-devel@lists.freedesktop.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>
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Thank you so much!

On Mon, Dec 13, 2021 at 6:27 PM Chun-Kuang Hu <chunkuang.hu@kernel.org> wro=
te:
>
> Hi, Mark:
>
> Mark Yacoub <markyacoub@chromium.org> =E6=96=BC 2021=E5=B9=B412=E6=9C=881=
4=E6=97=A5 =E9=80=B1=E4=BA=8C =E4=B8=8A=E5=8D=8812:08=E5=AF=AB=E9=81=93=EF=
=BC=9A
> >
> > At the reset hook, call __drm_atomic_helper_plane_reset which is
> > called at the initialization of the plane and sets the default value of
> > rotation on all planes to DRM_MODE_ROTATE_0 which is equal to 1.
>
> Applied to mediatek-drm-next [1], thanks.
>
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.gi=
t/log/?h=3Dmediatek-drm-next
>
> Regards,
> Chun-Kuang.
>
> >
> > Tested on Jacuzzi (MTK).
> > Resolves IGT@kms_properties@plane-properties-{legacy,atomic}
> >
> > Signed-off-by: Mark Yacoub <markyacoub@chromium.org>
> > ---
> >  drivers/gpu/drm/mediatek/mtk_drm_plane.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm=
/mediatek/mtk_drm_plane.c
> > index e6dcb34d30522..accd26481b9fb 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> > @@ -44,9 +44,10 @@ static void mtk_plane_reset(struct drm_plane *plane)
> >                 state =3D kzalloc(sizeof(*state), GFP_KERNEL);
> >                 if (!state)
> >                         return;
> > -               plane->state =3D &state->base;
> >         }
> >
> > +       __drm_atomic_helper_plane_reset(plane, &state->base);
> > +
> >         state->base.plane =3D plane;
> >         state->pending.format =3D DRM_FORMAT_RGB565;
> >  }
> > --
> > 2.34.1.173.g76aa8bc2d0-goog
> >