linux-kernel - [PATCH v2 09/10] drm: bridge: dw_hdmi: Update EDID during hotplug processing

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Message-ID: <20240908132823.3308029-10-jonas@kwiboo.se>
Date: Sun,  8 Sep 2024 13:28:11 +0000
From: Jonas Karlman <jonas@...boo.se>
To: Andrzej Hajda <andrzej.hajda@...el.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Jonas Karlman <jonas@...boo.se>,
	Jernej Skrabec <jernej.skrabec@...il.com>
Cc: Christian Hewitt <christianshewitt@...il.com>,
	Diederik de Haas <didi.debian@...ow.org>,
	Christopher Obbard <chris.obbard@...labora.com>,
	dri-devel@...ts.freedesktop.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 09/10] drm: bridge: dw_hdmi: Update EDID during hotplug processing

Update successfully read EDID during hotplug processing to ensure the
connector diplay_info is always up-to-date.

Signed-off-by: Jonas Karlman <jonas@...boo.se>
---
v2: No change
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index c19307120909..7bd9f895f03f 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2457,6 +2457,18 @@ dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
 
 	status = dw_hdmi_detect(hdmi);
 
+	/* Update EDID during hotplug processing (force=false) */
+	if (status == connector_status_connected && !force) {
+		const struct drm_edid *drm_edid;
+
+		drm_edid = dw_hdmi_edid_read(hdmi, connector);
+		if (drm_edid)
+			drm_edid_connector_update(connector, drm_edid);
+		cec_notifier_set_phys_addr(hdmi->cec_notifier,
+			connector->display_info.source_physical_address);
+		drm_edid_free(drm_edid);
+	}
+
 	if (status == connector_status_disconnected)
 		cec_notifier_phys_addr_invalidate(hdmi->cec_notifier);
 
-- 
2.46.0