}
uvc->enable_interrupt_ep = opts->enable_interrupt_ep;
- ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_streaming_ep);
+ /*
+ * gadget_is_{super|dual}speed() API check UDC controller capitblity. It should pass down
+ * highest speed endpoint descriptor to UDC controller. So UDC controller driver can reserve
+ * enough resource at check_config(), especially mult and maxburst. So UDC driver (such as
+ * cdns3) can know need at least (mult + 1) * (maxburst + 1) * wMaxPacketSize internal
+ * memory for this uvc functions. This is the only straightforward method to resolve the UDC
+ * resource allocation issue in the current gadget framework.
+ */
+ if (gadget_is_superspeed(c->cdev->gadget))
+ ep = usb_ep_autoconfig_ss(cdev->gadget, &uvc_ss_streaming_ep,
+ &uvc_ss_streaming_comp);
+ else if (gadget_is_dualspeed(cdev->gadget))
+ ep = usb_ep_autoconfig(cdev->gadget, &uvc_hs_streaming_ep);
+ else
+ ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_streaming_ep);
+
if (!ep) {
uvcg_info(f, "Unable to allocate streaming EP\n");
goto error;
}
uvc->video.ep = ep;
+ uvc_fs_streaming_ep.bEndpointAddress = uvc->video.ep->address;
uvc_hs_streaming_ep.bEndpointAddress = uvc->video.ep->address;
uvc_ss_streaming_ep.bEndpointAddress = uvc->video.ep->address;