[v2,24/49] drm/omap: Notify all devices in the pipeline of output disconnection

Submitted by Laurent Pinchart on Jan. 11, 2019, 3:50 a.m.

Details

Message ID 20190111035120.20668-25-laurent.pinchart@ideasonboard.com
State New
Series "omapdrm: drm_bridge and drm_panel support"
Headers show

Commit Message

Laurent Pinchart Jan. 11, 2019, 3:50 a.m.
For HDMI pipelines, when the output gets disconnected the device
handling CEC needs to be notified. Instead of guessing which device that
would be (and sometimes getting it wrong), notify all devices in the
pipeline.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
 drivers/gpu/drm/omapdrm/omap_connector.c | 28 ++++++++++++++----------
 1 file changed, 16 insertions(+), 12 deletions(-)

Patch hide | download patch | download mbox

diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
index 31b6d6d1def3..8db1f2fbcf43 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -35,18 +35,22 @@  struct omap_connector {
 };
 
 static void omap_connector_hpd_notify(struct drm_connector *connector,
-				      struct omap_dss_device *src,
 				      enum drm_connector_status status)
 {
-	if (status == connector_status_disconnected) {
-		/*
-		 * If the source is an HDMI encoder, notify it of disconnection.
-		 * This is required to let the HDMI encoder reset any internal
-		 * state related to connection status, such as the CEC address.
-		 */
-		if (src && src->type == OMAP_DISPLAY_TYPE_HDMI &&
-		    src->ops->hdmi.lost_hotplug)
-			src->ops->hdmi.lost_hotplug(src);
+	struct omap_connector *omap_connector = to_omap_connector(connector);
+	struct omap_dss_device *dssdev;
+
+	if (status != connector_status_disconnected)
+		return;
+
+	/*
+	 * Notify all devics in the pipeline of disconnection. This is required
+	 * to let the HDMI encoders reset their internal state related to
+	 * connection status, such as the CEC address.
+	 */
+	for (dssdev = omap_connector->output; dssdev; dssdev = dssdev->next) {
+		if (dssdev->ops && dssdev->ops->hdmi.lost_hotplug)
+			dssdev->ops->hdmi.lost_hotplug(dssdev);
 	}
 }
 
@@ -66,7 +70,7 @@  static void omap_connector_hpd_cb(void *cb_data,
 	if (old_status == status)
 		return;
 
-	omap_connector_hpd_notify(connector, omap_connector->hpd, status);
+	omap_connector_hpd_notify(connector, status);
 
 	drm_kms_helper_hotplug_event(dev);
 }
@@ -127,7 +131,7 @@  static enum drm_connector_status omap_connector_detect(
 		       ? connector_status_connected
 		       : connector_status_disconnected;
 
-		omap_connector_hpd_notify(connector, dssdev->src, status);
+		omap_connector_hpd_notify(connector, status);
 	} else {
 		switch (connector->connector_type) {
 		case DRM_MODE_CONNECTOR_DPI: