cdns_role_start
ret = cdns_role_start(cdns, USB_ROLE_NONE);
ret = cdns_role_start(cdns, USB_ROLE_DEVICE);
ret = cdns_role_start(cdns, USB_ROLE_HOST);
ret = cdns_role_start(cdns, real_role);
ret = cdns_role_start(cdns, current_role);
ret = cdns_role_start(cdns, role);