On Wed, Mar 06, 2019 at 09:07:21AM +0000, Biju Das wrote: > RZ/G2E cat874 board is capable of detecting cable connect and disconnect > events. Add support for renesas_usb3 to receive connect and disconnect > notification using extcon framework. I think you will need the series from Yu Chen [1], but once we have that, you can do this with USB role class instead of relying on extcon, and that is what you need to do. There is a reason why we need to use a dedicated class with the USB role switching instead of relying on extcon. We actually originally planned on using extcon with the USB role switches, but the extcon maintainers refused some the USB mux drivers. The problem from extcon perspective is that the consumer/supplier roles seem to be inverted in some cases. USB role switch can simply be too many things - discrete mux, integrated mux (like in your case) or something like a dual role capable USB controller could simply represent one. On the other hand, using a dedicated API and class now feel like a much better idea in general compared to a multipurpose thing like extcon. [1] https://lkml.org/lkml/2019/3/2/42 thanks, -- heikki
