Quoting Maxime Ripard (2022-02-07 16:35:08)
> The rcar-du KMS driver will call drm_plane_create_zpos_property() with an
> init value depending on the plane type.
>
> Since the initial value wasn't carried over in the state, the driver had
> to set it again in rcar_du_plane_reset() and rcar_du_vsp_plane_reset().
> However, the helpers have been adjusted to set it properly at reset, so
> this is not needed anymore.
Sounds helpful ;-)
> Cc: linux-renesas-...@vger.kernel.org
> Cc: Kieran Bingham <kieran.bingham+rene...@ideasonboard.com>
> Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> Signed-off-by: Maxime Ripard <max...@cerno.tech>
Reviewed-by: Kieran Bingham <kieran.bingham+rene...@ideasonboard.com>
> ---
> drivers/gpu/drm/rcar-du/rcar_du_plane.c | 1 -
> drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 1 -
> 2 files changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c
> b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
> index 862197be1e01..9dda5e06457d 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
> @@ -696,7 +696,6 @@ static void rcar_du_plane_reset(struct drm_plane *plane)
> state->hwindex = -1;
> state->source = RCAR_DU_PLANE_MEMORY;
> state->colorkey = RCAR_DU_COLORKEY_NONE;
> - state->state.zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
> }
>
> static int rcar_du_plane_atomic_set_property(struct drm_plane *plane,
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> index b7fc5b069cbc..719c60034952 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> @@ -362,7 +362,6 @@ static void rcar_du_vsp_plane_reset(struct drm_plane
> *plane)
> return;
>
> __drm_atomic_helper_plane_reset(plane, &state->state);
> - state->state.zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
> }
>
> static const struct drm_plane_funcs rcar_du_vsp_plane_funcs = {
> --
> 2.34.1
>
