drm/omap: dss: Support for detecting display stack readiness
When omapdss is loaded (all core components are in place) create a list of
devices used in the display graph. This list later can be used by omapdrm
via the omapdss_stack_is_ready() function to check that these components
are loaded. Based on this information, omapdrm can defer probe in case when
the omapdss stack is not ready yet.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 7e1feb9..d5c369b 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -939,4 +939,7 @@ const struct dispc_ops *dispc_get_ops(void);
bool omapdss_component_is_display(struct device_node *node);
bool omapdss_component_is_output(struct device_node *node);
+bool omapdss_stack_is_ready(void);
+void omapdss_gather_components(struct device *dev);
+
#endif /* __OMAP_DRM_DSS_H */