3  * USB Raw Gadget driver.
4  * See Documentation/usb/raw-gadget.rst for more details.
26 #include <linux/usb/gadget.h>
30 #define	DRIVER_DESC "USB Raw Gadget"
31 #define DRIVER_NAME "raw-gadget"
173 	struct usb_gadget		*gadget;  member
214 			usb_ep_dequeue(dev->gadget->ep0, dev->req);  in dev_free()
215 		usb_ep_free_request(dev->gadget->ep0, dev->req);  in dev_free()
278 static int gadget_bind(struct usb_gadget *gadget,  in gadget_bind()  argument
287 	if (strcmp(gadget->name, dev->udc_name) != 0)  in gadget_bind()
290 	set_gadget_data(gadget, dev);  in gadget_bind()
291 	req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL);  in gadget_bind()
293 		dev_err(&gadget->dev, "usb_ep_alloc_request failed\n");  in gadget_bind()
294 		set_gadget_data(gadget, NULL);  in gadget_bind()
302 	dev->gadget = gadget;  in gadget_bind()
303 	gadget_for_each_ep(ep, dev->gadget) {  in gadget_bind()
314 		dev_err(&gadget->dev, "failed to queue event\n");  in gadget_bind()
315 		set_gadget_data(gadget, NULL);  in gadget_bind()
324 static void gadget_unbind(struct usb_gadget *gadget)  in gadget_unbind()  argument
326 	struct raw_dev *dev = get_gadget_data(gadget);  in gadget_unbind()
328 	set_gadget_data(gadget, NULL);  in gadget_unbind()
333 static int gadget_setup(struct usb_gadget *gadget,  in gadget_setup()  argument
337 	struct raw_dev *dev = get_gadget_data(gadget);  in gadget_setup()
342 		dev_err(&gadget->dev, "ignoring, device is not running\n");  in gadget_setup()
347 		dev_dbg(&gadget->dev, "stalling, request already pending\n");  in gadget_setup()
359 		dev_err(&gadget->dev, "failed to queue event\n");  in gadget_setup()
369 static void gadget_disconnect(struct usb_gadget *gadget) { }  in gadget_disconnect()  argument
370 static void gadget_suspend(struct usb_gadget *gadget) { }  in gadget_suspend()  argument
371 static void gadget_resume(struct usb_gadget *gadget) { }  in gadget_resume()  argument
372 static void gadget_reset(struct usb_gadget *gadget) { }  in gadget_reset()  argument
404 	if (!dev->gadget) {  in raw_release()
582 	if (!dev->gadget) {  in raw_ioctl_event_fetch()
583 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_event_fetch()
591 		dev_dbg(&dev->gadget->dev, "event fetching interrupted\n");  in raw_ioctl_event_fetch()
595 		dev_err(&dev->gadget->dev, "failed to fetch event\n");  in raw_ioctl_event_fetch()
646 	if (!dev->gadget) {  in raw_process_ep0_io()
647 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_process_ep0_io()
652 		dev_dbg(&dev->gadget->dev, "fail, urb already queued\n");  in raw_process_ep0_io()
658 		dev_dbg(&dev->gadget->dev, "fail, wrong direction\n");  in raw_process_ep0_io()
679 	ret = usb_ep_queue(dev->gadget->ep0, dev->req, GFP_KERNEL);  in raw_process_ep0_io()
681 		dev_err(&dev->gadget->dev,  in raw_process_ep0_io()
690 		dev_dbg(&dev->gadget->dev, "wait interrupted\n");  in raw_process_ep0_io()
691 		usb_ep_dequeue(dev->gadget->ep0, dev->req);  in raw_process_ep0_io()
761 	if (!dev->gadget) {  in raw_ioctl_ep0_stall()
762 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_ep0_stall()
767 		dev_dbg(&dev->gadget->dev, "fail, urb already queued\n");  in raw_ioctl_ep0_stall()
772 		dev_dbg(&dev->gadget->dev, "fail, no request pending\n");  in raw_ioctl_ep0_stall()
777 	ret = usb_ep_set_halt(dev->gadget->ep0);  in raw_ioctl_ep0_stall()
779 		dev_err(&dev->gadget->dev,  in raw_ioctl_ep0_stall()
819 	if (!dev->gadget) {  in raw_ioctl_ep_enable()
820 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_ep_enable()
832 		if (!usb_gadget_ep_match_desc(dev->gadget, ep->ep, desc, NULL))  in raw_ioctl_ep_enable()
837 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_enable()
843 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_enable()
855 	dev_dbg(&dev->gadget->dev, "fail, no gadget endpoints available\n");  in raw_ioctl_ep_enable()
876 	if (!dev->gadget) {  in raw_ioctl_ep_disable()
877 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_ep_disable()
887 		dev_dbg(&dev->gadget->dev, "fail, endpoint is not enabled\n");  in raw_ioctl_ep_disable()
892 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_disable()
898 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_disable()
931 	if (!dev->gadget) {  in raw_ioctl_ep_set_clear_halt_wedge()
932 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_ep_set_clear_halt_wedge()
942 		dev_dbg(&dev->gadget->dev, "fail, endpoint is not enabled\n");  in raw_ioctl_ep_set_clear_halt_wedge()
947 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
953 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
959 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
968 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
973 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
978 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
1017 	if (!dev->gadget) {  in raw_process_ep_io()
1018 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_process_ep_io()
1023 		dev_dbg(&dev->gadget->dev, "fail, invalid endpoint\n");  in raw_process_ep_io()
1029 		dev_dbg(&dev->gadget->dev, "fail, endpoint is not enabled\n");  in raw_process_ep_io()
1034 		dev_dbg(&dev->gadget->dev,  in raw_process_ep_io()
1040 		dev_dbg(&dev->gadget->dev, "fail, urb already queued\n");  in raw_process_ep_io()
1045 		dev_dbg(&dev->gadget->dev, "fail, wrong direction\n");  in raw_process_ep_io()
1061 		dev_err(&dev->gadget->dev,  in raw_process_ep_io()
1070 		dev_dbg(&dev->gadget->dev, "wait interrupted\n");  in raw_process_ep_io()
1141 	if (!dev->gadget) {  in raw_ioctl_configure()
1142 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_configure()
1146 	usb_gadget_set_state(dev->gadget, USB_STATE_CONFIGURED);  in raw_ioctl_configure()
1164 	if (!dev->gadget) {  in raw_ioctl_vbus_draw()
1165 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_vbus_draw()
1169 	usb_gadget_vbus_draw(dev->gadget, 2 * value);  in raw_ioctl_vbus_draw()
1213 	if (!dev->gadget) {  in raw_ioctl_eps_info()
1214 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_eps_info()