From b139557f41e5eecb3ec65d2bbc9b05b13f2ccc8c Mon Sep 17 00:00:00 2001 From: AngeloGioacchino Del Regno Date: Thu, 23 Oct 2025 12:32:33 +0200 Subject: [PATCH] drm/mediatek: mtk_hdmi_common: Add OP_HDMI if helper funcs assigned 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 Signed-off-by: AngeloGioacchino Del Regno Signed-off-by: Louis-Alexis Eyraud Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20251023-mediatek-drm-hdmi-v2-v11-7-7873ec4a1edf@collabora.com/ Signed-off-by: Chun-Kuang Hu --- drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c index a82189315aef..55e39ff8da31 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c @@ -429,6 +429,10 @@ struct mtk_hdmi *mtk_hdmi_common_probe(struct platform_device *pdev) 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"; -- 2.47.3