linux-kernel - Re: [PATCH v2] drm/mediatek: Set the default value of rotation to DRM_MODE_ROTATE

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Date:   Tue, 14 Dec 2021 07:27:52 +0800
From:   Chun-Kuang Hu <chunkuang.hu@...nel.org>
To:     Mark Yacoub <markyacoub@...omium.org>
Cc:     "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        Sean Paul <seanpaul@...omium.org>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Jason-JH Lin <jason-jh.lin@...iatek.com>, tzungbi@...gle.com,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] drm/mediatek: Set the default value of rotation to DRM_MODE_ROTATE_0

Hi, Mark:

Mark Yacoub <markyacoub@...omium.org> 於 2021年12月14日 週二 上午12:08寫道：
>
> 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=mediatek-drm-next

Regards,
Chun-Kuang.

>
> Tested on Jacuzzi (MTK).
> Resolves IGT@..._properties@...ne-properties-{legacy,atomic}
>
> Signed-off-by: Mark Yacoub <markyacoub@...omium.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 = kzalloc(sizeof(*state), GFP_KERNEL);
>                 if (!state)
>                         return;
> -               plane->state = &state->base;
>         }
>
> +       __drm_atomic_helper_plane_reset(plane, &state->base);
> +
>         state->base.plane = plane;
>         state->pending.format = DRM_FORMAT_RGB565;
>  }
> --
> 2.34.1.173.g76aa8bc2d0-goog
>