[PATCH] drm: mediatek: fix device passed to cmdq

[Chun-Kuang Hu]

Hi, Hsin-Yi:

Hsin-Yi Wang <hsinyi at chromium.org> 於 2020年4月6日 週一 下午1:12寫道：
>
> drm device is now probed from mmsys. We need to use mmsys device to get gce
> nodes. Fix following errors:
>
> [    0.740068] mediatek-drm mediatek-drm.1.auto: error -2 can't parse gce-client-reg property (0)
> [    0.748721] mediatek-drm mediatek-drm.1.auto: error -2 can't parse gce-client-reg property (0)
> ...
> [    2.659645] mediatek-drm mediatek-drm.1.auto: failed to request channel
> [    2.666270] mediatek-drm mediatek-drm.1.auto: failed to request channel

Reviewed-by: Chun-Kuang Hu <chunkuang.hu at kernel.org>

>
> Fixes: 1d367541aded ("soc / drm: mediatek: Fix mediatek-drm device probing")
> Signed-off-by: Hsin-Yi Wang <hsinyi at chromium.org>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 6 ++++--
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c  | 3 ++-
>  2 files changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index 615a54e60fe2..8621f0289399 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -822,14 +822,16 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
>
>  #if IS_REACHABLE(CONFIG_MTK_CMDQ)
>         mtk_crtc->cmdq_client =
> -                       cmdq_mbox_create(dev, drm_crtc_index(&mtk_crtc->base),
> +                       cmdq_mbox_create(mtk_crtc->mmsys_dev,
> +                                        drm_crtc_index(&mtk_crtc->base),
>                                          2000);
>         if (IS_ERR(mtk_crtc->cmdq_client)) {
>                 dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n",
>                         drm_crtc_index(&mtk_crtc->base));
>                 mtk_crtc->cmdq_client = NULL;
>         }
> -       ret = of_property_read_u32_index(dev->of_node, "mediatek,gce-events",
> +       ret = of_property_read_u32_index(mtk_crtc->mmsys_dev->of_node,
> +                                        "mediatek,gce-events",
>                                          drm_crtc_index(&mtk_crtc->base),
>                                          &mtk_crtc->cmdq_event);
>         if (ret)
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index e2bb0d19ef99..dc78e86bccc0 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -517,7 +517,8 @@ static int mtk_drm_probe(struct platform_device *pdev)
>                                 goto err_node;
>                         }
>
> -                       ret = mtk_ddp_comp_init(dev, node, comp, comp_id, NULL);
> +                       ret = mtk_ddp_comp_init(dev->parent, node, comp,
> +                                               comp_id, NULL);
>                         if (ret) {
>                                 of_node_put(node);
>                                 goto err_node;
> --
> 2.26.0.292.g33ef6b2f38-goog
>
>
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