[PATCH v2] drm/mediatek: Set the default value of rotation to DRM_MODE_ROTATE_0

[Chun-Kuang Hu]

Hi, Mark:

Mark Yacoub <markyacoub at chromium.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 at kms_properties@plane-properties-{legacy,atomic}
>
> Signed-off-by: Mark Yacoub <markyacoub at 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 = 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
>