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From:   Chun-Kuang Hu <chunkuang.hu@kernel.org>
Date:   Tue, 14 Dec 2021 07:27:52 +0800
Message-ID: <CAAOTY_81KaSEWAqTWgzmshDZ9BefO3pNrqQwWbB01E4L0+mqzg@mail.gmail.com>
Subject: Re: [PATCH v2] drm/mediatek: Set the default value of rotation to DRM_MODE_ROTATE_0
To:     Mark Yacoub <markyacoub@chromium.org>
Cc:     "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>,
        Sean Paul <seanpaul@chromium.org>,
        Chun-Kuang Hu <chunkuang.hu@kernel.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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Hi, Mark:

Mark Yacoub <markyacoub@chromium.org> =E6=96=BC 2021=E5=B9=B412=E6=9C=8814=
=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.git/=
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/m=
ediatek/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
>