diff options
Diffstat (limited to 'drivers/gpu/drm/drm_connector.c')
| -rw-r--r-- | drivers/gpu/drm/drm_connector.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 480b3770cddb..d6e86227542e 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -269,6 +269,7 @@ int drm_connector_init(struct drm_device *dev, INIT_LIST_HEAD(&connector->modes); mutex_init(&connector->mutex); connector->edid_blob_ptr = NULL; + connector->epoch_counter = 0; connector->tile_blob_ptr = NULL; connector->status = connector_status_unknown; connector->display_info.panel_orientation = @@ -1979,6 +1980,7 @@ int drm_connector_update_edid_property(struct drm_connector *connector, struct drm_device *dev = connector->dev; size_t size = 0; int ret; + const struct edid *old_edid; /* ignore requests to set edid when overridden */ if (connector->override_edid) @@ -2002,6 +2004,20 @@ int drm_connector_update_edid_property(struct drm_connector *connector, drm_update_tile_info(connector, edid); + if (connector->edid_blob_ptr) { + old_edid = (const struct edid *)connector->edid_blob_ptr->data; + if (old_edid) { + if (!drm_edid_are_equal(edid, old_edid)) { + DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Edid was changed.\n", + connector->base.id, connector->name); + + connector->epoch_counter += 1; + DRM_DEBUG_KMS("Updating change counter to %llu\n", + connector->epoch_counter); + } + } + } + drm_object_property_set_value(&connector->base, dev->mode_config.non_desktop_property, connector->display_info.non_desktop); |