3  * USB Raw Gadget driver.
4  * See Documentation/usb/raw-gadget.rst for more details.
27 #include <linux/usb/gadget.h>
32 #define	DRIVER_DESC "USB Raw Gadget"
33 #define DRIVER_NAME "raw-gadget"
175 	struct usb_gadget		*gadget;  member
216 			usb_ep_dequeue(dev->gadget->ep0, dev->req);  in dev_free()
217 		usb_ep_free_request(dev->gadget->ep0, dev->req);  in dev_free()
280 static int gadget_bind(struct usb_gadget *gadget,  in gadget_bind()  argument
289 	if (strcmp(gadget->name, dev->udc_name) != 0)  in gadget_bind()
292 	set_gadget_data(gadget, dev);  in gadget_bind()
293 	req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL);  in gadget_bind()
295 		dev_err(&gadget->dev, "usb_ep_alloc_request failed\n");  in gadget_bind()
296 		set_gadget_data(gadget, NULL);  in gadget_bind()
304 	dev->gadget = gadget;  in gadget_bind()
305 	gadget_for_each_ep(ep, dev->gadget) {  in gadget_bind()
314 	dev_dbg(&gadget->dev, "gadget connected\n");  in gadget_bind()
317 		dev_err(&gadget->dev, "failed to queue connect event\n");  in gadget_bind()
318 		set_gadget_data(gadget, NULL);  in gadget_bind()
327 static void gadget_unbind(struct usb_gadget *gadget)  in gadget_unbind()  argument
329 	struct raw_dev *dev = get_gadget_data(gadget);  in gadget_unbind()
331 	set_gadget_data(gadget, NULL);  in gadget_unbind()
336 static int gadget_setup(struct usb_gadget *gadget,  in gadget_setup()  argument
340 	struct raw_dev *dev = get_gadget_data(gadget);  in gadget_setup()
345 		dev_err(&gadget->dev, "ignoring, device is not running\n");  in gadget_setup()
350 		dev_dbg(&gadget->dev, "stalling, request already pending\n");  in gadget_setup()
362 		dev_err(&gadget->dev, "failed to queue control event\n");  in gadget_setup()
381 static void gadget_disconnect(struct usb_gadget *gadget)  in gadget_disconnect()  argument
383 	struct raw_dev *dev = get_gadget_data(gadget);  in gadget_disconnect()
386 	dev_dbg(&gadget->dev, "gadget disconnected\n");  in gadget_disconnect()
389 		dev_err(&gadget->dev, "failed to queue disconnect event\n");  in gadget_disconnect()
391 static void gadget_suspend(struct usb_gadget *gadget)  in gadget_suspend()  argument
393 	struct raw_dev *dev = get_gadget_data(gadget);  in gadget_suspend()
396 	dev_dbg(&gadget->dev, "gadget suspended\n");  in gadget_suspend()
399 		dev_err(&gadget->dev, "failed to queue suspend event\n");  in gadget_suspend()
401 static void gadget_resume(struct usb_gadget *gadget)  in gadget_resume()  argument
403 	struct raw_dev *dev = get_gadget_data(gadget);  in gadget_resume()
406 	dev_dbg(&gadget->dev, "gadget resumed\n");  in gadget_resume()
409 		dev_err(&gadget->dev, "failed to queue resume event\n");  in gadget_resume()
411 static void gadget_reset(struct usb_gadget *gadget)  in gadget_reset()  argument
413 	struct raw_dev *dev = get_gadget_data(gadget);  in gadget_reset()
416 	dev_dbg(&gadget->dev, "gadget reset\n");  in gadget_reset()
419 		dev_err(&gadget->dev, "failed to queue reset event\n");  in gadget_reset()
452 	if (!dev->gadget) {  in raw_release()
630 	if (!dev->gadget) {  in raw_ioctl_event_fetch()
631 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_event_fetch()
639 		dev_dbg(&dev->gadget->dev, "event fetching interrupted\n");  in raw_ioctl_event_fetch()
643 		dev_err(&dev->gadget->dev, "failed to fetch event\n");  in raw_ioctl_event_fetch()
694 	if (!dev->gadget) {  in raw_process_ep0_io()
695 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_process_ep0_io()
700 		dev_dbg(&dev->gadget->dev, "fail, urb already queued\n");  in raw_process_ep0_io()
706 		dev_dbg(&dev->gadget->dev, "fail, wrong direction\n");  in raw_process_ep0_io()
727 	ret = usb_ep_queue(dev->gadget->ep0, dev->req, GFP_KERNEL);  in raw_process_ep0_io()
729 		dev_err(&dev->gadget->dev,  in raw_process_ep0_io()
737 		dev_dbg(&dev->gadget->dev, "wait interrupted\n");  in raw_process_ep0_io()
738 		usb_ep_dequeue(dev->gadget->ep0, dev->req);  in raw_process_ep0_io()
808 	if (!dev->gadget) {  in raw_ioctl_ep0_stall()
809 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_ep0_stall()
814 		dev_dbg(&dev->gadget->dev, "fail, urb already queued\n");  in raw_ioctl_ep0_stall()
819 		dev_dbg(&dev->gadget->dev, "fail, no request pending\n");  in raw_ioctl_ep0_stall()
824 	ret = usb_ep_set_halt(dev->gadget->ep0);  in raw_ioctl_ep0_stall()
826 		dev_err(&dev->gadget->dev,  in raw_ioctl_ep0_stall()
867 	if (!dev->gadget) {  in raw_ioctl_ep_enable()
868 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_ep_enable()
878 		if (!usb_gadget_ep_match_desc(dev->gadget, ep->ep, desc, NULL))  in raw_ioctl_ep_enable()
886 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_enable()
892 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_enable()
905 		dev_dbg(&dev->gadget->dev, "fail, bad endpoint descriptor\n");  in raw_ioctl_ep_enable()
908 		dev_dbg(&dev->gadget->dev, "fail, no endpoints available\n");  in raw_ioctl_ep_enable()
930 	if (!dev->gadget) {  in raw_ioctl_ep_disable()
931 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_ep_disable()
941 		dev_dbg(&dev->gadget->dev, "fail, endpoint is not enabled\n");  in raw_ioctl_ep_disable()
946 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_disable()
952 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_disable()
985 	if (!dev->gadget) {  in raw_ioctl_ep_set_clear_halt_wedge()
986 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_ep_set_clear_halt_wedge()
996 		dev_dbg(&dev->gadget->dev, "fail, endpoint is not enabled\n");  in raw_ioctl_ep_set_clear_halt_wedge()
1001 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
1007 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
1013 		dev_dbg(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
1022 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
1027 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
1032 			dev_err(&dev->gadget->dev,  in raw_ioctl_ep_set_clear_halt_wedge()
1071 	if (!dev->gadget) {  in raw_process_ep_io()
1072 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_process_ep_io()
1077 		dev_dbg(&dev->gadget->dev, "fail, invalid endpoint\n");  in raw_process_ep_io()
1083 		dev_dbg(&dev->gadget->dev, "fail, endpoint is not enabled\n");  in raw_process_ep_io()
1088 		dev_dbg(&dev->gadget->dev,  in raw_process_ep_io()
1094 		dev_dbg(&dev->gadget->dev, "fail, urb already queued\n");  in raw_process_ep_io()
1099 		dev_dbg(&dev->gadget->dev, "fail, wrong direction\n");  in raw_process_ep_io()
1115 		dev_err(&dev->gadget->dev,  in raw_process_ep_io()
1123 		dev_dbg(&dev->gadget->dev, "wait interrupted\n");  in raw_process_ep_io()
1194 	if (!dev->gadget) {  in raw_ioctl_configure()
1195 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_configure()
1199 	usb_gadget_set_state(dev->gadget, USB_STATE_CONFIGURED);  in raw_ioctl_configure()
1217 	if (!dev->gadget) {  in raw_ioctl_vbus_draw()
1218 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_vbus_draw()
1222 	usb_gadget_vbus_draw(dev->gadget, 2 * value);  in raw_ioctl_vbus_draw()
1266 	if (!dev->gadget) {  in raw_ioctl_eps_info()
1267 		dev_dbg(dev->dev, "fail, gadget is not bound\n");  in raw_ioctl_eps_info()