Re: [PATCH v6 38/42] drm/mediatek: mtk_hdmi_common: Add OP_HDMI if helper funcs assigned

["CK Hu (胡俊光)" <ck.hu@mediatek.com>]

On Tue, 2025-02-11 at 12:34 +0100, AngeloGioacchino Del Regno wrote:
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> 
> 
> In preparation for adding the HDMI TX v2 driver, and to allow
> a future modernization of the HDMI v1 one, perform changes
> that enable the usage of the HDMI Helpers provided by DRM.
> 
> Check if the HDMI driver provides the function pointers to
> hdmi_{clear,write}_infoframe used by the HDMI Helper API and,
> if present, add DRM_BRIDGE_OP_HDMI to the drm_bridge ops,
> enabling the drm API to register the bridge as HDMI and to use
> the HDMI Helper functions.
> 
> If the hdmi_{write,clear}_infoframe pointers are not assigned,
> vendor and product strings and HDMI helpers will not be used,
> hence this commit brings no functional changes to drivers that
> have not been refactored to use the new helpers.
> 
> This also means that, in the current state, there is effectively
> no functional change to mtk_hdmi and its other components.

Reviewed-by: CK Hu <ck.hu@mediatek.com>

> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
> index 2c91f65f26fa..d58752b772e8 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
> @@ -410,6 +410,11 @@ struct mtk_hdmi *mtk_hdmi_common_probe(struct platform_device *pdev)
>         hdmi->bridge.of_node = pdev->dev.of_node;
>         hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
>                          | DRM_BRIDGE_OP_HPD;
> +
> +       if (ver_conf->bridge_funcs->hdmi_write_infoframe &&
> +           ver_conf->bridge_funcs->hdmi_clear_infoframe)
> +               hdmi->bridge.ops |= DRM_BRIDGE_OP_HDMI;
> +
>         hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
>         hdmi->bridge.ddc = hdmi->ddc_adpt;
>         hdmi->bridge.vendor = "MediaTek";
> --
> 2.48.1
>