How to call an action on a route using closure actions?

I've got openModal action defined on application route. I'm trying to call this action from within a component.

If I use syntax for action bubbling:

{{my-component openModal="openModal"}}

then everything works as expected and I can trigger this action using this.sendAction("openModal").

However, I'm not sure how to get the same result using the new closure syntax:

{{my-component openModal=(action "openModal")}}

In this case, Ember complains that there's no action openModal defined on the controller. Do I have to define this action on every controller that uses my-component? Is there a way to somehow use target option to tell Ember that this action is defined on a route? Is it ok to mix bubbling and closure syntax in a single component?

I'm using Ember 2.0 beta 1.