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-rw-r--r--drivers/gpu/drm/radeon/radeon_connectors.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 93f6a970b51..ec2f3ffc42c 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -735,6 +735,39 @@ static enum drm_connector_status radeon_dvi_detect(struct drm_connector *connect
ret = connector_status_disconnected;
} else
ret = connector_status_connected;
+
+ /* multiple connectors on the same encoder with the same ddc line
+ * This tends to be HDMI and DVI on the same encoder with the
+ * same ddc line. If the edid says HDMI, consider the HDMI port
+ * connected and the DVI port disconnected. If the edid doesn't
+ * say HDMI, vice versa.
+ */
+ if (radeon_connector->shared_ddc && connector_status_connected) {
+ struct drm_device *dev = connector->dev;
+ struct drm_connector *list_connector;
+ struct radeon_connector *list_radeon_connector;
+ list_for_each_entry(list_connector, &dev->mode_config.connector_list, head) {
+ if (connector == list_connector)
+ continue;
+ list_radeon_connector = to_radeon_connector(list_connector);
+ if (radeon_connector->devices == list_radeon_connector->devices) {
+ if (drm_detect_hdmi_monitor(radeon_connector->edid)) {
+ if (connector->connector_type == DRM_MODE_CONNECTOR_DVID) {
+ kfree(radeon_connector->edid);
+ radeon_connector->edid = NULL;
+ ret = connector_status_disconnected;
+ }
+ } else {
+ if ((connector->connector_type == DRM_MODE_CONNECTOR_HDMIA) ||
+ (connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)) {
+ kfree(radeon_connector->edid);
+ radeon_connector->edid = NULL;
+ ret = connector_status_disconnected;
+ }
+ }
+ }
+ }
+ }
}
}