Re: [PATCH v3 4/5] drm/mediatek: dpi/dsi: change the getting possible_crtc way

[Chun-Kuang Hu]

Hi, Frank:

Frank Wunderlich <linux@xxxxxxxxx> 於 2020年8月4日 週二 下午7:00寫道：
>
> From: Jitao Shi <jitao.shi@xxxxxxxxxxxx>
>
> For current mediatek dsi encoder, its possible crtc is fixed in crtc
> 0, and mediatek dpi encoder's possible crtc is fixed in crtc 1. In
> some SoC the possible crtc is not fixed in this case, so call
> mtk_drm_find_possible_crtc_by_comp() to find out the correct possible
> crtc.

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

>
> Signed-off-by: Jitao Shi <jitao.shi@xxxxxxxxxxxx>
> Signed-off-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 3 ++-
>  drivers/gpu/drm/mediatek/mtk_dsi.c | 3 ++-
>  2 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index d4f0fb7ad312..e43977015843 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -608,7 +608,8 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
>         drm_encoder_helper_add(&dpi->encoder, &mtk_dpi_encoder_helper_funcs);
>
>         /* Currently DPI0 is fixed to be driven by OVL1 */
> -       dpi->encoder.possible_crtcs = BIT(1);
> +       dpi->encoder.possible_crtcs =
> +               mtk_drm_find_possible_crtc_by_comp(drm_dev, dpi->ddp_comp);
>
>         ret = drm_bridge_attach(&dpi->encoder, dpi->bridge, NULL, 0);
>         if (ret) {
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index 270bf22c98fe..c31d9c12d4a9 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -892,7 +892,8 @@ static int mtk_dsi_create_conn_enc(struct drm_device *drm, struct mtk_dsi *dsi)
>          * Currently display data paths are statically assigned to a crtc each.
>          * crtc 0 is OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0
>          */
> -       dsi->encoder.possible_crtcs = 1;
> +       dsi->encoder.possible_crtcs =
> +               mtk_drm_find_possible_crtc_by_comp(drm, dsi->ddp_comp);
>
>         /* If there's a bridge, attach to it and let it create the connector */
>         if (dsi->bridge) {
> --
> 2.25.1
>
>
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