diff mbox series

[v9,20/23] drm/mediatek: mtk_hdmi_common: Add OP_HDMI if helper funcs assigned

Message ID 20250415104321.51149-21-angelogioacchino.delregno@collabora.com (mailing list archive)
State New
Headers show
Series Add support for MT8195/88 HDMIv2 and DDCv2 | expand

Commit Message

AngeloGioacchino Del Regno April 15, 2025, 10:43 a.m. UTC 
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 mbox series

Patch

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
index 93003a39708e..b6043d99be7e 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
@@ -406,6 +406,11 @@  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";