Re: [PATCH v2] drm: mediatek: fix device passed to cmdq

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Hi, Hsin-Yi:

Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx> 於 2020年4月9日 週四 下午2:02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@xxxxxxxxxx>

>
> Fixes: 1d367541aded ("soc / drm: mediatek: Fix mediatek-drm device probing")
> Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
> Reviewed-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
> Tested-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
> ---
> The patch is based on
> https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux.git
> branch v5.6-next/soc
>
> Change log:
> v1->v2:
> align with 60fa8c13ab1a ("drm/mediatek: Move gce event property to mutex device node")
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 3 ++-
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c  | 2 +-
>  2 files changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index 615a54e60fe2..7247c6f87f4a 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -822,7 +822,8 @@ 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",
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index e2bb0d19ef99..28418e5b83ee 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -517,7 +517,7 @@ 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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