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10#include "mtu3.h"
11#include "mtu3_trace.h"
12
13void mtu3_req_complete(struct mtu3_ep *mep,
14 struct usb_request *req, int status)
15__releases(mep->mtu->lock)
16__acquires(mep->mtu->lock)
17{
18 struct mtu3_request *mreq = to_mtu3_request(req);
19 struct mtu3 *mtu = mreq->mtu;
20
21 list_del(&mreq->list);
22 if (req->status == -EINPROGRESS)
23 req->status = status;
24
25 trace_mtu3_req_complete(mreq);
26 spin_unlock(&mtu->lock);
27
28
29 if (mep->epnum)
30 usb_gadget_unmap_request(&mtu->g, req, mep->is_in);
31
32 dev_dbg(mtu->dev, "%s complete req: %p, sts %d, %d/%d\n",
33 mep->name, req, req->status, req->actual, req->length);
34
35 usb_gadget_giveback_request(&mep->ep, req);
36 spin_lock(&mtu->lock);
37}
38
39static void nuke(struct mtu3_ep *mep, const int status)
40{
41 struct mtu3_request *mreq = NULL;
42
43 if (list_empty(&mep->req_list))
44 return;
45
46 dev_dbg(mep->mtu->dev, "abort %s's req: sts %d\n", mep->name, status);
47
48
49 if (mep->epnum)
50 mtu3_qmu_flush(mep);
51
52 while (!list_empty(&mep->req_list)) {
53 mreq = list_first_entry(&mep->req_list,
54 struct mtu3_request, list);
55 mtu3_req_complete(mep, &mreq->request, status);
56 }
57}
58
59static int mtu3_ep_enable(struct mtu3_ep *mep)
60{
61 const struct usb_endpoint_descriptor *desc;
62 const struct usb_ss_ep_comp_descriptor *comp_desc;
63 struct mtu3 *mtu = mep->mtu;
64 u32 interval = 0;
65 u32 mult = 0;
66 u32 burst = 0;
67 int ret;
68
69 desc = mep->desc;
70 comp_desc = mep->comp_desc;
71 mep->type = usb_endpoint_type(desc);
72 mep->maxp = usb_endpoint_maxp(desc);
73
74 switch (mtu->g.speed) {
75 case USB_SPEED_SUPER:
76 case USB_SPEED_SUPER_PLUS:
77 if (usb_endpoint_xfer_int(desc) ||
78 usb_endpoint_xfer_isoc(desc)) {
79 interval = desc->bInterval;
80 interval = clamp_val(interval, 1, 16);
81 if (usb_endpoint_xfer_isoc(desc) && comp_desc)
82 mult = comp_desc->bmAttributes;
83 }
84 if (comp_desc)
85 burst = comp_desc->bMaxBurst;
86
87 break;
88 case USB_SPEED_HIGH:
89 if (usb_endpoint_xfer_isoc(desc) ||
90 usb_endpoint_xfer_int(desc)) {
91 interval = desc->bInterval;
92 interval = clamp_val(interval, 1, 16);
93 mult = usb_endpoint_maxp_mult(desc) - 1;
94 }
95 break;
96 case USB_SPEED_FULL:
97 if (usb_endpoint_xfer_isoc(desc))
98 interval = clamp_val(desc->bInterval, 1, 16);
99 else if (usb_endpoint_xfer_int(desc))
100 interval = clamp_val(desc->bInterval, 1, 255);
101
102 break;
103 default:
104 break;
105 }
106
107 dev_dbg(mtu->dev, "%s maxp:%d, interval:%d, burst:%d, mult:%d\n",
108 __func__, mep->maxp, interval, burst, mult);
109
110 mep->ep.maxpacket = mep->maxp;
111 mep->ep.desc = desc;
112 mep->ep.comp_desc = comp_desc;
113
114
115 mep->slot = usb_endpoint_xfer_int(desc) ? 0 : mtu->slot;
116
117 ret = mtu3_config_ep(mtu, mep, interval, burst, mult);
118 if (ret < 0)
119 return ret;
120
121 ret = mtu3_gpd_ring_alloc(mep);
122 if (ret < 0) {
123 mtu3_deconfig_ep(mtu, mep);
124 return ret;
125 }
126
127 mtu3_qmu_start(mep);
128
129 return 0;
130}
131
132static int mtu3_ep_disable(struct mtu3_ep *mep)
133{
134 struct mtu3 *mtu = mep->mtu;
135
136 mtu3_qmu_stop(mep);
137
138
139 nuke(mep, -ESHUTDOWN);
140 mtu3_deconfig_ep(mtu, mep);
141 mtu3_gpd_ring_free(mep);
142
143 mep->desc = NULL;
144 mep->ep.desc = NULL;
145 mep->comp_desc = NULL;
146 mep->type = 0;
147 mep->flags = 0;
148
149 return 0;
150}
151
152static int mtu3_gadget_ep_enable(struct usb_ep *ep,
153 const struct usb_endpoint_descriptor *desc)
154{
155 struct mtu3_ep *mep;
156 struct mtu3 *mtu;
157 unsigned long flags;
158 int ret = -EINVAL;
159
160 if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) {
161 pr_debug("%s invalid parameters\n", __func__);
162 return -EINVAL;
163 }
164
165 if (!desc->wMaxPacketSize) {
166 pr_debug("%s missing wMaxPacketSize\n", __func__);
167 return -EINVAL;
168 }
169 mep = to_mtu3_ep(ep);
170 mtu = mep->mtu;
171
172
173 if (usb_endpoint_num(desc) != mep->epnum)
174 return -EINVAL;
175
176 if (!!usb_endpoint_dir_in(desc) ^ !!mep->is_in)
177 return -EINVAL;
178
179 dev_dbg(mtu->dev, "%s %s\n", __func__, ep->name);
180
181 if (mep->flags & MTU3_EP_ENABLED) {
182 dev_WARN_ONCE(mtu->dev, true, "%s is already enabled\n",
183 mep->name);
184 return 0;
185 }
186
187 spin_lock_irqsave(&mtu->lock, flags);
188 mep->desc = desc;
189 mep->comp_desc = ep->comp_desc;
190
191 ret = mtu3_ep_enable(mep);
192 if (ret)
193 goto error;
194
195 mep->flags = MTU3_EP_ENABLED;
196 mtu->active_ep++;
197
198error:
199 spin_unlock_irqrestore(&mtu->lock, flags);
200
201 dev_dbg(mtu->dev, "%s active_ep=%d\n", __func__, mtu->active_ep);
202 trace_mtu3_gadget_ep_enable(mep);
203
204 return ret;
205}
206
207static int mtu3_gadget_ep_disable(struct usb_ep *ep)
208{
209 struct mtu3_ep *mep = to_mtu3_ep(ep);
210 struct mtu3 *mtu = mep->mtu;
211 unsigned long flags;
212
213 dev_dbg(mtu->dev, "%s %s\n", __func__, mep->name);
214 trace_mtu3_gadget_ep_disable(mep);
215
216 if (!(mep->flags & MTU3_EP_ENABLED)) {
217 dev_warn(mtu->dev, "%s is already disabled\n", mep->name);
218 return 0;
219 }
220
221 spin_lock_irqsave(&mtu->lock, flags);
222 mtu3_ep_disable(mep);
223 mep->flags = 0;
224 mtu->active_ep--;
225 spin_unlock_irqrestore(&(mtu->lock), flags);
226
227 dev_dbg(mtu->dev, "%s active_ep=%d, mtu3 is_active=%d\n",
228 __func__, mtu->active_ep, mtu->is_active);
229
230 return 0;
231}
232
233struct usb_request *mtu3_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
234{
235 struct mtu3_ep *mep = to_mtu3_ep(ep);
236 struct mtu3_request *mreq;
237
238 mreq = kzalloc(sizeof(*mreq), gfp_flags);
239 if (!mreq)
240 return NULL;
241
242 mreq->request.dma = DMA_ADDR_INVALID;
243 mreq->epnum = mep->epnum;
244 mreq->mep = mep;
245 INIT_LIST_HEAD(&mreq->list);
246 trace_mtu3_alloc_request(mreq);
247
248 return &mreq->request;
249}
250
251void mtu3_free_request(struct usb_ep *ep, struct usb_request *req)
252{
253 struct mtu3_request *mreq = to_mtu3_request(req);
254
255 trace_mtu3_free_request(mreq);
256 kfree(mreq);
257}
258
259static int mtu3_gadget_queue(struct usb_ep *ep,
260 struct usb_request *req, gfp_t gfp_flags)
261{
262 struct mtu3_ep *mep = to_mtu3_ep(ep);
263 struct mtu3_request *mreq = to_mtu3_request(req);
264 struct mtu3 *mtu = mep->mtu;
265 unsigned long flags;
266 int ret = 0;
267
268 if (!req->buf)
269 return -ENODATA;
270
271 if (mreq->mep != mep)
272 return -EINVAL;
273
274 dev_dbg(mtu->dev, "%s %s EP%d(%s), req=%p, maxp=%d, len#%d\n",
275 __func__, mep->is_in ? "TX" : "RX", mreq->epnum, ep->name,
276 mreq, ep->maxpacket, mreq->request.length);
277
278 if (req->length > GPD_BUF_SIZE ||
279 (mtu->gen2cp && req->length > GPD_BUF_SIZE_EL)) {
280 dev_warn(mtu->dev,
281 "req length > supported MAX:%d requested:%d\n",
282 mtu->gen2cp ? GPD_BUF_SIZE_EL : GPD_BUF_SIZE,
283 req->length);
284 return -EOPNOTSUPP;
285 }
286
287
288 if (!mep->desc) {
289 dev_dbg(mtu->dev, "req=%p queued to %s while it's disabled\n",
290 req, ep->name);
291 return -ESHUTDOWN;
292 }
293
294 mreq->mtu = mtu;
295 mreq->request.actual = 0;
296 mreq->request.status = -EINPROGRESS;
297
298 ret = usb_gadget_map_request(&mtu->g, req, mep->is_in);
299 if (ret) {
300 dev_err(mtu->dev, "dma mapping failed\n");
301 return ret;
302 }
303
304 spin_lock_irqsave(&mtu->lock, flags);
305
306 if (mtu3_prepare_transfer(mep)) {
307 ret = -EAGAIN;
308 goto error;
309 }
310
311 list_add_tail(&mreq->list, &mep->req_list);
312 mtu3_insert_gpd(mep, mreq);
313 mtu3_qmu_resume(mep);
314
315error:
316 spin_unlock_irqrestore(&mtu->lock, flags);
317 trace_mtu3_gadget_queue(mreq);
318
319 return ret;
320}
321
322static int mtu3_gadget_dequeue(struct usb_ep *ep, struct usb_request *req)
323{
324 struct mtu3_ep *mep = to_mtu3_ep(ep);
325 struct mtu3_request *mreq = to_mtu3_request(req);
326 struct mtu3_request *r;
327 struct mtu3 *mtu = mep->mtu;
328 unsigned long flags;
329 int ret = 0;
330
331 if (mreq->mep != mep)
332 return -EINVAL;
333
334 dev_dbg(mtu->dev, "%s : req=%p\n", __func__, req);
335 trace_mtu3_gadget_dequeue(mreq);
336
337 spin_lock_irqsave(&mtu->lock, flags);
338
339 list_for_each_entry(r, &mep->req_list, list) {
340 if (r == mreq)
341 break;
342 }
343 if (r != mreq) {
344 dev_dbg(mtu->dev, "req=%p not queued to %s\n", req, ep->name);
345 ret = -EINVAL;
346 goto done;
347 }
348
349 mtu3_qmu_flush(mep);
350 mtu3_req_complete(mep, req, -ECONNRESET);
351 mtu3_qmu_start(mep);
352
353done:
354 spin_unlock_irqrestore(&mtu->lock, flags);
355
356 return ret;
357}
358
359
360
361
362
363static int mtu3_gadget_ep_set_halt(struct usb_ep *ep, int value)
364{
365 struct mtu3_ep *mep = to_mtu3_ep(ep);
366 struct mtu3 *mtu = mep->mtu;
367 struct mtu3_request *mreq;
368 unsigned long flags;
369 int ret = 0;
370
371 dev_dbg(mtu->dev, "%s : %s...", __func__, ep->name);
372
373 spin_lock_irqsave(&mtu->lock, flags);
374
375 if (mep->type == USB_ENDPOINT_XFER_ISOC) {
376 ret = -EINVAL;
377 goto done;
378 }
379
380 mreq = next_request(mep);
381 if (value) {
382
383
384
385
386
387 if (mreq) {
388 dev_dbg(mtu->dev, "req in progress, cannot halt %s\n",
389 ep->name);
390 ret = -EAGAIN;
391 goto done;
392 }
393 } else {
394 mep->flags &= ~MTU3_EP_WEDGE;
395 }
396
397 dev_dbg(mtu->dev, "%s %s stall\n", ep->name, value ? "set" : "clear");
398
399 mtu3_ep_stall_set(mep, value);
400
401done:
402 spin_unlock_irqrestore(&mtu->lock, flags);
403 trace_mtu3_gadget_ep_set_halt(mep);
404
405 return ret;
406}
407
408
409static int mtu3_gadget_ep_set_wedge(struct usb_ep *ep)
410{
411 struct mtu3_ep *mep = to_mtu3_ep(ep);
412
413 mep->flags |= MTU3_EP_WEDGE;
414
415 return usb_ep_set_halt(ep);
416}
417
418static const struct usb_ep_ops mtu3_ep_ops = {
419 .enable = mtu3_gadget_ep_enable,
420 .disable = mtu3_gadget_ep_disable,
421 .alloc_request = mtu3_alloc_request,
422 .free_request = mtu3_free_request,
423 .queue = mtu3_gadget_queue,
424 .dequeue = mtu3_gadget_dequeue,
425 .set_halt = mtu3_gadget_ep_set_halt,
426 .set_wedge = mtu3_gadget_ep_set_wedge,
427};
428
429static int mtu3_gadget_get_frame(struct usb_gadget *gadget)
430{
431 struct mtu3 *mtu = gadget_to_mtu3(gadget);
432
433 return (int)mtu3_readl(mtu->mac_base, U3D_USB20_FRAME_NUM);
434}
435
436static int mtu3_gadget_wakeup(struct usb_gadget *gadget)
437{
438 struct mtu3 *mtu = gadget_to_mtu3(gadget);
439 unsigned long flags;
440
441 dev_dbg(mtu->dev, "%s\n", __func__);
442
443
444 if (!mtu->may_wakeup)
445 return -EOPNOTSUPP;
446
447 spin_lock_irqsave(&mtu->lock, flags);
448 if (mtu->g.speed >= USB_SPEED_SUPER) {
449 mtu3_setbits(mtu->mac_base, U3D_LINK_POWER_CONTROL, UX_EXIT);
450 } else {
451 mtu3_setbits(mtu->mac_base, U3D_POWER_MANAGEMENT, RESUME);
452 spin_unlock_irqrestore(&mtu->lock, flags);
453 usleep_range(10000, 11000);
454 spin_lock_irqsave(&mtu->lock, flags);
455 mtu3_clrbits(mtu->mac_base, U3D_POWER_MANAGEMENT, RESUME);
456 }
457 spin_unlock_irqrestore(&mtu->lock, flags);
458 return 0;
459}
460
461static int mtu3_gadget_set_self_powered(struct usb_gadget *gadget,
462 int is_selfpowered)
463{
464 struct mtu3 *mtu = gadget_to_mtu3(gadget);
465
466 mtu->is_self_powered = !!is_selfpowered;
467 return 0;
468}
469
470static int mtu3_gadget_pullup(struct usb_gadget *gadget, int is_on)
471{
472 struct mtu3 *mtu = gadget_to_mtu3(gadget);
473 unsigned long flags;
474
475 dev_dbg(mtu->dev, "%s (%s) for %sactive device\n", __func__,
476 is_on ? "on" : "off", mtu->is_active ? "" : "in");
477
478 pm_runtime_get_sync(mtu->dev);
479
480
481 spin_lock_irqsave(&mtu->lock, flags);
482
483 is_on = !!is_on;
484 if (!mtu->is_active) {
485
486 mtu->softconnect = is_on;
487 } else if (is_on != mtu->softconnect) {
488 mtu->softconnect = is_on;
489 mtu3_dev_on_off(mtu, is_on);
490 }
491
492 spin_unlock_irqrestore(&mtu->lock, flags);
493 pm_runtime_put(mtu->dev);
494
495 return 0;
496}
497
498static int mtu3_gadget_start(struct usb_gadget *gadget,
499 struct usb_gadget_driver *driver)
500{
501 struct mtu3 *mtu = gadget_to_mtu3(gadget);
502 unsigned long flags;
503
504 if (mtu->gadget_driver) {
505 dev_err(mtu->dev, "%s is already bound to %s\n",
506 mtu->g.name, mtu->gadget_driver->driver.name);
507 return -EBUSY;
508 }
509
510 dev_dbg(mtu->dev, "bind driver %s\n", driver->function);
511 pm_runtime_get_sync(mtu->dev);
512
513 spin_lock_irqsave(&mtu->lock, flags);
514
515 mtu->softconnect = 0;
516 mtu->gadget_driver = driver;
517
518 if (mtu->ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)
519 mtu3_start(mtu);
520
521 spin_unlock_irqrestore(&mtu->lock, flags);
522 pm_runtime_put(mtu->dev);
523
524 return 0;
525}
526
527static void stop_activity(struct mtu3 *mtu)
528{
529 struct usb_gadget_driver *driver = mtu->gadget_driver;
530 int i;
531
532
533 if (mtu->g.speed == USB_SPEED_UNKNOWN)
534 driver = NULL;
535 else
536 mtu->g.speed = USB_SPEED_UNKNOWN;
537
538
539 if (mtu->softconnect) {
540 mtu->softconnect = 0;
541 mtu3_dev_on_off(mtu, 0);
542 }
543
544
545
546
547
548 nuke(mtu->ep0, -ESHUTDOWN);
549 for (i = 1; i < mtu->num_eps; i++) {
550 nuke(mtu->in_eps + i, -ESHUTDOWN);
551 nuke(mtu->out_eps + i, -ESHUTDOWN);
552 }
553
554 if (driver) {
555 spin_unlock(&mtu->lock);
556 driver->disconnect(&mtu->g);
557 spin_lock(&mtu->lock);
558 }
559}
560
561static int mtu3_gadget_stop(struct usb_gadget *g)
562{
563 struct mtu3 *mtu = gadget_to_mtu3(g);
564 unsigned long flags;
565
566 dev_dbg(mtu->dev, "%s\n", __func__);
567
568 spin_lock_irqsave(&mtu->lock, flags);
569
570 stop_activity(mtu);
571 mtu->gadget_driver = NULL;
572
573 if (mtu->ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)
574 mtu3_stop(mtu);
575
576 spin_unlock_irqrestore(&mtu->lock, flags);
577
578 synchronize_irq(mtu->irq);
579 return 0;
580}
581
582static void
583mtu3_gadget_set_speed(struct usb_gadget *g, enum usb_device_speed speed)
584{
585 struct mtu3 *mtu = gadget_to_mtu3(g);
586 unsigned long flags;
587
588 dev_dbg(mtu->dev, "%s %s\n", __func__, usb_speed_string(speed));
589
590 spin_lock_irqsave(&mtu->lock, flags);
591 mtu->speed = speed;
592 spin_unlock_irqrestore(&mtu->lock, flags);
593}
594
595static const struct usb_gadget_ops mtu3_gadget_ops = {
596 .get_frame = mtu3_gadget_get_frame,
597 .wakeup = mtu3_gadget_wakeup,
598 .set_selfpowered = mtu3_gadget_set_self_powered,
599 .pullup = mtu3_gadget_pullup,
600 .udc_start = mtu3_gadget_start,
601 .udc_stop = mtu3_gadget_stop,
602 .udc_set_speed = mtu3_gadget_set_speed,
603};
604
605static void mtu3_state_reset(struct mtu3 *mtu)
606{
607 mtu->address = 0;
608 mtu->ep0_state = MU3D_EP0_STATE_SETUP;
609 mtu->may_wakeup = 0;
610 mtu->u1_enable = 0;
611 mtu->u2_enable = 0;
612 mtu->delayed_status = false;
613 mtu->test_mode = false;
614}
615
616static void init_hw_ep(struct mtu3 *mtu, struct mtu3_ep *mep,
617 u32 epnum, u32 is_in)
618{
619 mep->epnum = epnum;
620 mep->mtu = mtu;
621 mep->is_in = is_in;
622
623 INIT_LIST_HEAD(&mep->req_list);
624
625 sprintf(mep->name, "ep%d%s", epnum,
626 !epnum ? "" : (is_in ? "in" : "out"));
627
628 mep->ep.name = mep->name;
629 INIT_LIST_HEAD(&mep->ep.ep_list);
630
631
632 if (!epnum) {
633 usb_ep_set_maxpacket_limit(&mep->ep, 512);
634 mep->ep.caps.type_control = true;
635 mep->ep.ops = &mtu3_ep0_ops;
636 mtu->g.ep0 = &mep->ep;
637 } else {
638 usb_ep_set_maxpacket_limit(&mep->ep, 1024);
639 mep->ep.caps.type_iso = true;
640 mep->ep.caps.type_bulk = true;
641 mep->ep.caps.type_int = true;
642 mep->ep.ops = &mtu3_ep_ops;
643 list_add_tail(&mep->ep.ep_list, &mtu->g.ep_list);
644 }
645
646 dev_dbg(mtu->dev, "%s, name=%s, maxp=%d\n", __func__, mep->ep.name,
647 mep->ep.maxpacket);
648
649 if (!epnum) {
650 mep->ep.caps.dir_in = true;
651 mep->ep.caps.dir_out = true;
652 } else if (is_in) {
653 mep->ep.caps.dir_in = true;
654 } else {
655 mep->ep.caps.dir_out = true;
656 }
657}
658
659static void mtu3_gadget_init_eps(struct mtu3 *mtu)
660{
661 u8 epnum;
662
663
664 INIT_LIST_HEAD(&(mtu->g.ep_list));
665
666 dev_dbg(mtu->dev, "%s num_eps(1 for a pair of tx&rx ep)=%d\n",
667 __func__, mtu->num_eps);
668
669 init_hw_ep(mtu, mtu->ep0, 0, 0);
670 for (epnum = 1; epnum < mtu->num_eps; epnum++) {
671 init_hw_ep(mtu, mtu->in_eps + epnum, epnum, 1);
672 init_hw_ep(mtu, mtu->out_eps + epnum, epnum, 0);
673 }
674}
675
676int mtu3_gadget_setup(struct mtu3 *mtu)
677{
678 mtu->g.ops = &mtu3_gadget_ops;
679 mtu->g.max_speed = mtu->max_speed;
680 mtu->g.speed = USB_SPEED_UNKNOWN;
681 mtu->g.sg_supported = 0;
682 mtu->g.name = MTU3_DRIVER_NAME;
683 mtu->is_active = 0;
684 mtu->delayed_status = false;
685
686 mtu3_gadget_init_eps(mtu);
687
688 return usb_add_gadget_udc(mtu->dev, &mtu->g);
689}
690
691void mtu3_gadget_cleanup(struct mtu3 *mtu)
692{
693 usb_del_gadget_udc(&mtu->g);
694}
695
696void mtu3_gadget_resume(struct mtu3 *mtu)
697{
698 dev_dbg(mtu->dev, "gadget RESUME\n");
699 if (mtu->gadget_driver && mtu->gadget_driver->resume) {
700 spin_unlock(&mtu->lock);
701 mtu->gadget_driver->resume(&mtu->g);
702 spin_lock(&mtu->lock);
703 }
704}
705
706
707void mtu3_gadget_suspend(struct mtu3 *mtu)
708{
709 dev_dbg(mtu->dev, "gadget SUSPEND\n");
710 if (mtu->gadget_driver && mtu->gadget_driver->suspend) {
711 spin_unlock(&mtu->lock);
712 mtu->gadget_driver->suspend(&mtu->g);
713 spin_lock(&mtu->lock);
714 }
715}
716
717
718void mtu3_gadget_disconnect(struct mtu3 *mtu)
719{
720 dev_dbg(mtu->dev, "gadget DISCONNECT\n");
721 if (mtu->gadget_driver && mtu->gadget_driver->disconnect) {
722 spin_unlock(&mtu->lock);
723 mtu->gadget_driver->disconnect(&mtu->g);
724 spin_lock(&mtu->lock);
725 }
726
727 mtu3_state_reset(mtu);
728 usb_gadget_set_state(&mtu->g, USB_STATE_NOTATTACHED);
729}
730
731void mtu3_gadget_reset(struct mtu3 *mtu)
732{
733 dev_dbg(mtu->dev, "gadget RESET\n");
734
735
736 if (mtu->g.speed != USB_SPEED_UNKNOWN)
737 mtu3_gadget_disconnect(mtu);
738 else
739 mtu3_state_reset(mtu);
740}
741
