Re: [PATCH v4 5/5] drm/mediatek: Clear pending flag when cmdq packet is done

[Chun-Kuang Hu]

Hi, Jason:

jason-jh.lin <jason-jh.lin@xxxxxxxxxxxx> 於 2021年10月26日 週二 下午1:29寫道：
>
> From: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
>
> In cmdq mode, packet may be flushed before it is executed, so
> the pending flag should be cleared after cmdq packet is done.

Reviewed-by: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx>

>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
> Signed-off-by: jason-jh.lin <jason-jh.lin@xxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 51 ++++++++++++++++++++++---
>  1 file changed, 46 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index 31f05efc1bc0..ea285795776f 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -275,8 +275,42 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
>  #if IS_REACHABLE(CONFIG_MTK_CMDQ)
>  static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
>  {
> +       struct cmdq_cb_data *data = mssg;
>         struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
>         struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> +       struct mtk_crtc_state *state;
> +       unsigned int i;
> +
> +       if (data->sta < 0)
> +               return;
> +
> +       state = to_mtk_crtc_state(mtk_crtc->base.state);
> +
> +       state->pending_config = false;
> +
> +       if (mtk_crtc->pending_planes) {
> +               for (i = 0; i < mtk_crtc->layer_nr; i++) {
> +                       struct drm_plane *plane = &mtk_crtc->planes[i];
> +                       struct mtk_plane_state *plane_state;
> +
> +                       plane_state = to_mtk_plane_state(plane->state);
> +
> +                       plane_state->pending.config = false;
> +               }
> +               mtk_crtc->pending_planes = false;
> +       }
> +
> +       if (mtk_crtc->pending_async_planes) {
> +               for (i = 0; i < mtk_crtc->layer_nr; i++) {
> +                       struct drm_plane *plane = &mtk_crtc->planes[i];
> +                       struct mtk_plane_state *plane_state;
> +
> +                       plane_state = to_mtk_plane_state(plane->state);
> +
> +                       plane_state->pending.async_config = false;
> +               }
> +               mtk_crtc->pending_async_planes = false;
> +       }
>
>         mtk_crtc->cmdq_vblank_cnt = 0;
>  }
> @@ -432,7 +466,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
>                                     state->pending_vrefresh, 0,
>                                     cmdq_handle);
>
> -               state->pending_config = false;
> +               if (!cmdq_handle)
> +                       state->pending_config = false;
>         }
>
>         if (mtk_crtc->pending_planes) {
> @@ -452,9 +487,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
>                                 mtk_ddp_comp_layer_config(comp, local_layer,
>                                                           plane_state,
>                                                           cmdq_handle);
> -                       plane_state->pending.config = false;
> +                       if (!cmdq_handle)
> +                               plane_state->pending.config = false;
>                 }
> -               mtk_crtc->pending_planes = false;
> +
> +               if (!cmdq_handle)
> +                       mtk_crtc->pending_planes = false;
>         }
>
>         if (mtk_crtc->pending_async_planes) {
> @@ -474,9 +512,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
>                                 mtk_ddp_comp_layer_config(comp, local_layer,
>                                                           plane_state,
>                                                           cmdq_handle);
> -                       plane_state->pending.async_config = false;
> +                       if (!cmdq_handle)
> +                               plane_state->pending.async_config = false;
>                 }
> -               mtk_crtc->pending_async_planes = false;
> +
> +               if (!cmdq_handle)
> +                       mtk_crtc->pending_async_planes = false;
>         }
>  }
>
> --
> 2.18.0
>