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17#include <env.h>
18#include <errno.h>
19#include <common.h>
20#include <log.h>
21#include <malloc.h>
22
23#include <linux/usb/ch9.h>
24#include <linux/usb/gadget.h>
25#include <linux/usb/composite.h>
26
27#include <dfu.h>
28#include <g_dnl.h>
29#include "f_dfu.h"
30
31struct f_dfu {
32 struct usb_function usb_function;
33
34 struct usb_descriptor_header **function;
35 struct usb_string *strings;
36
37
38 u8 config;
39 u8 altsetting;
40 enum dfu_state dfu_state;
41 unsigned int dfu_status;
42
43
44 int blk_seq_num;
45 unsigned int poll_timeout;
46};
47
48struct dfu_entity *dfu_defer_flush;
49
50typedef int (*dfu_state_fn) (struct f_dfu *,
51 const struct usb_ctrlrequest *,
52 struct usb_gadget *,
53 struct usb_request *);
54
55static inline struct f_dfu *func_to_dfu(struct usb_function *f)
56{
57 return container_of(f, struct f_dfu, usb_function);
58}
59
60static const struct dfu_function_descriptor dfu_func = {
61 .bLength = sizeof dfu_func,
62 .bDescriptorType = DFU_DT_FUNC,
63 .bmAttributes = DFU_BIT_WILL_DETACH |
64 DFU_BIT_MANIFESTATION_TOLERANT |
65 DFU_BIT_CAN_UPLOAD |
66 DFU_BIT_CAN_DNLOAD,
67 .wDetachTimeOut = 0,
68 .wTransferSize = DFU_USB_BUFSIZ,
69 .bcdDFUVersion = __constant_cpu_to_le16(0x0110),
70};
71
72static struct usb_interface_descriptor dfu_intf_runtime = {
73 .bLength = sizeof dfu_intf_runtime,
74 .bDescriptorType = USB_DT_INTERFACE,
75 .bNumEndpoints = 0,
76 .bInterfaceClass = USB_CLASS_APP_SPEC,
77 .bInterfaceSubClass = 1,
78 .bInterfaceProtocol = 1,
79
80};
81
82static struct usb_descriptor_header *dfu_runtime_descs[] = {
83 (struct usb_descriptor_header *) &dfu_intf_runtime,
84 NULL,
85};
86
87static const char dfu_name[] = "Device Firmware Upgrade";
88
89
90
91
92
93
94static struct usb_string strings_dfu_generic[] = {
95 [0].s = dfu_name,
96 { }
97};
98
99static struct usb_gadget_strings stringtab_dfu_generic = {
100 .language = 0x0409,
101 .strings = strings_dfu_generic,
102};
103
104static struct usb_gadget_strings *dfu_generic_strings[] = {
105 &stringtab_dfu_generic,
106 NULL,
107};
108
109
110
111
112static struct usb_gadget_strings stringtab_dfu = {
113 .language = 0x0409,
114
115
116
117
118
119
120
121};
122
123static struct usb_gadget_strings *dfu_strings[] = {
124 &stringtab_dfu,
125 NULL,
126};
127
128static void dfu_set_poll_timeout(struct dfu_status *dstat, unsigned int ms)
129{
130
131
132
133
134
135
136
137
138
139
140 unsigned char *p = (unsigned char *)&ms;
141
142 if (!ms || (ms & ~DFU_POLL_TIMEOUT_MASK)) {
143 dstat->bwPollTimeout[0] = 0;
144 dstat->bwPollTimeout[1] = 0;
145 dstat->bwPollTimeout[2] = 0;
146
147 return;
148 }
149
150 dstat->bwPollTimeout[0] = *p++;
151 dstat->bwPollTimeout[1] = *p++;
152 dstat->bwPollTimeout[2] = *p;
153}
154
155
156
157static void dnload_request_complete(struct usb_ep *ep, struct usb_request *req)
158{
159 struct f_dfu *f_dfu = req->context;
160 int ret;
161
162 ret = dfu_write(dfu_get_entity(f_dfu->altsetting), req->buf,
163 req->actual, f_dfu->blk_seq_num);
164 if (ret) {
165 f_dfu->dfu_status = DFU_STATUS_errUNKNOWN;
166 f_dfu->dfu_state = DFU_STATE_dfuERROR;
167 }
168}
169
170static void dnload_request_flush(struct usb_ep *ep, struct usb_request *req)
171{
172 struct f_dfu *f_dfu = req->context;
173 dfu_set_defer_flush(dfu_get_entity(f_dfu->altsetting));
174}
175
176static inline int dfu_get_manifest_timeout(struct dfu_entity *dfu)
177{
178 return dfu->poll_timeout ? dfu->poll_timeout(dfu) :
179 DFU_MANIFEST_POLL_TIMEOUT;
180}
181
182static int handle_getstatus(struct usb_request *req)
183{
184 struct dfu_status *dstat = (struct dfu_status *)req->buf;
185 struct f_dfu *f_dfu = req->context;
186 struct dfu_entity *dfu = dfu_get_entity(f_dfu->altsetting);
187
188 dfu_set_poll_timeout(dstat, 0);
189
190 switch (f_dfu->dfu_state) {
191 case DFU_STATE_dfuDNLOAD_SYNC:
192 case DFU_STATE_dfuDNBUSY:
193 f_dfu->dfu_state = DFU_STATE_dfuDNLOAD_IDLE;
194 break;
195 case DFU_STATE_dfuMANIFEST_SYNC:
196 f_dfu->dfu_state = DFU_STATE_dfuMANIFEST;
197 break;
198 case DFU_STATE_dfuMANIFEST:
199 dfu_set_poll_timeout(dstat, dfu_get_manifest_timeout(dfu));
200 break;
201 default:
202 break;
203 }
204
205 if (f_dfu->poll_timeout)
206 if (!(f_dfu->blk_seq_num %
207 (dfu_get_buf_size() / DFU_USB_BUFSIZ)))
208 dfu_set_poll_timeout(dstat, f_dfu->poll_timeout);
209
210
211 dstat->bStatus = f_dfu->dfu_status;
212 dstat->bState = f_dfu->dfu_state;
213 dstat->iString = 0;
214
215 return sizeof(struct dfu_status);
216}
217
218static int handle_getstate(struct usb_request *req)
219{
220 struct f_dfu *f_dfu = req->context;
221
222 ((u8 *)req->buf)[0] = f_dfu->dfu_state;
223 return sizeof(u8);
224}
225
226static inline void to_dfu_mode(struct f_dfu *f_dfu)
227{
228 f_dfu->usb_function.strings = dfu_strings;
229 f_dfu->usb_function.hs_descriptors = f_dfu->function;
230 f_dfu->usb_function.descriptors = f_dfu->function;
231 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
232}
233
234static inline void to_runtime_mode(struct f_dfu *f_dfu)
235{
236 f_dfu->usb_function.strings = NULL;
237 f_dfu->usb_function.hs_descriptors = dfu_runtime_descs;
238 f_dfu->usb_function.descriptors = dfu_runtime_descs;
239}
240
241static int handle_upload(struct usb_request *req, u16 len)
242{
243 struct f_dfu *f_dfu = req->context;
244
245 return dfu_read(dfu_get_entity(f_dfu->altsetting), req->buf,
246 req->length, f_dfu->blk_seq_num);
247}
248
249static int handle_dnload(struct usb_gadget *gadget, u16 len)
250{
251 struct usb_composite_dev *cdev = get_gadget_data(gadget);
252 struct usb_request *req = cdev->req;
253 struct f_dfu *f_dfu = req->context;
254
255 if (len == 0)
256 f_dfu->dfu_state = DFU_STATE_dfuMANIFEST_SYNC;
257
258 req->complete = dnload_request_complete;
259
260 return len;
261}
262
263
264
265static int state_app_idle(struct f_dfu *f_dfu,
266 const struct usb_ctrlrequest *ctrl,
267 struct usb_gadget *gadget,
268 struct usb_request *req)
269{
270 int value = 0;
271
272 switch (ctrl->bRequest) {
273 case USB_REQ_DFU_GETSTATUS:
274 value = handle_getstatus(req);
275 break;
276 case USB_REQ_DFU_GETSTATE:
277 value = handle_getstate(req);
278 break;
279 case USB_REQ_DFU_DETACH:
280 f_dfu->dfu_state = DFU_STATE_appDETACH;
281 to_dfu_mode(f_dfu);
282 value = RET_ZLP;
283 break;
284 default:
285 value = RET_STALL;
286 break;
287 }
288
289 return value;
290}
291
292static int state_app_detach(struct f_dfu *f_dfu,
293 const struct usb_ctrlrequest *ctrl,
294 struct usb_gadget *gadget,
295 struct usb_request *req)
296{
297 int value = 0;
298
299 switch (ctrl->bRequest) {
300 case USB_REQ_DFU_GETSTATUS:
301 value = handle_getstatus(req);
302 break;
303 case USB_REQ_DFU_GETSTATE:
304 value = handle_getstate(req);
305 break;
306 default:
307 f_dfu->dfu_state = DFU_STATE_appIDLE;
308 value = RET_STALL;
309 break;
310 }
311
312 return value;
313}
314
315static int state_dfu_idle(struct f_dfu *f_dfu,
316 const struct usb_ctrlrequest *ctrl,
317 struct usb_gadget *gadget,
318 struct usb_request *req)
319{
320 u16 w_value = le16_to_cpu(ctrl->wValue);
321 u16 len = le16_to_cpu(ctrl->wLength);
322 int value = 0;
323
324 switch (ctrl->bRequest) {
325 case USB_REQ_DFU_DNLOAD:
326 if (len == 0) {
327 f_dfu->dfu_state = DFU_STATE_dfuERROR;
328 value = RET_STALL;
329 break;
330 }
331 f_dfu->dfu_state = DFU_STATE_dfuDNLOAD_SYNC;
332 f_dfu->blk_seq_num = w_value;
333 value = handle_dnload(gadget, len);
334 break;
335 case USB_REQ_DFU_UPLOAD:
336 f_dfu->dfu_state = DFU_STATE_dfuUPLOAD_IDLE;
337 f_dfu->blk_seq_num = 0;
338 value = handle_upload(req, len);
339 break;
340 case USB_REQ_DFU_ABORT:
341
342 value = RET_ZLP;
343 break;
344 case USB_REQ_DFU_GETSTATUS:
345 value = handle_getstatus(req);
346 break;
347 case USB_REQ_DFU_GETSTATE:
348 value = handle_getstate(req);
349 break;
350 case USB_REQ_DFU_DETACH:
351
352
353
354
355
356
357
358
359 f_dfu->dfu_state =
360 DFU_STATE_dfuMANIFEST_WAIT_RST;
361 to_runtime_mode(f_dfu);
362 f_dfu->dfu_state = DFU_STATE_appIDLE;
363
364 g_dnl_trigger_detach();
365 break;
366 default:
367 f_dfu->dfu_state = DFU_STATE_dfuERROR;
368 value = RET_STALL;
369 break;
370 }
371
372 return value;
373}
374
375static int state_dfu_dnload_sync(struct f_dfu *f_dfu,
376 const struct usb_ctrlrequest *ctrl,
377 struct usb_gadget *gadget,
378 struct usb_request *req)
379{
380 int value = 0;
381
382 switch (ctrl->bRequest) {
383 case USB_REQ_DFU_GETSTATUS:
384 value = handle_getstatus(req);
385 break;
386 case USB_REQ_DFU_GETSTATE:
387 value = handle_getstate(req);
388 break;
389 default:
390 f_dfu->dfu_state = DFU_STATE_dfuERROR;
391 value = RET_STALL;
392 break;
393 }
394
395 return value;
396}
397
398static int state_dfu_dnbusy(struct f_dfu *f_dfu,
399 const struct usb_ctrlrequest *ctrl,
400 struct usb_gadget *gadget,
401 struct usb_request *req)
402{
403 int value = 0;
404
405 switch (ctrl->bRequest) {
406 case USB_REQ_DFU_GETSTATUS:
407 value = handle_getstatus(req);
408 break;
409 default:
410 f_dfu->dfu_state = DFU_STATE_dfuERROR;
411 value = RET_STALL;
412 break;
413 }
414
415 return value;
416}
417
418static int state_dfu_dnload_idle(struct f_dfu *f_dfu,
419 const struct usb_ctrlrequest *ctrl,
420 struct usb_gadget *gadget,
421 struct usb_request *req)
422{
423 u16 w_value = le16_to_cpu(ctrl->wValue);
424 u16 len = le16_to_cpu(ctrl->wLength);
425 int value = 0;
426
427 switch (ctrl->bRequest) {
428 case USB_REQ_DFU_DNLOAD:
429 f_dfu->dfu_state = DFU_STATE_dfuDNLOAD_SYNC;
430 f_dfu->blk_seq_num = w_value;
431 value = handle_dnload(gadget, len);
432 break;
433 case USB_REQ_DFU_ABORT:
434 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
435 value = RET_ZLP;
436 break;
437 case USB_REQ_DFU_GETSTATUS:
438 value = handle_getstatus(req);
439 break;
440 case USB_REQ_DFU_GETSTATE:
441 value = handle_getstate(req);
442 break;
443 default:
444 f_dfu->dfu_state = DFU_STATE_dfuERROR;
445 value = RET_STALL;
446 break;
447 }
448
449 return value;
450}
451
452static int state_dfu_manifest_sync(struct f_dfu *f_dfu,
453 const struct usb_ctrlrequest *ctrl,
454 struct usb_gadget *gadget,
455 struct usb_request *req)
456{
457 int value = 0;
458
459 switch (ctrl->bRequest) {
460 case USB_REQ_DFU_GETSTATUS:
461
462 f_dfu->dfu_state = DFU_STATE_dfuMANIFEST;
463 value = handle_getstatus(req);
464 f_dfu->blk_seq_num = 0;
465 req->complete = dnload_request_flush;
466 break;
467 case USB_REQ_DFU_GETSTATE:
468 value = handle_getstate(req);
469 break;
470 default:
471 f_dfu->dfu_state = DFU_STATE_dfuERROR;
472 value = RET_STALL;
473 break;
474 }
475
476 return value;
477}
478
479static int state_dfu_manifest(struct f_dfu *f_dfu,
480 const struct usb_ctrlrequest *ctrl,
481 struct usb_gadget *gadget,
482 struct usb_request *req)
483{
484 int value = 0;
485
486 switch (ctrl->bRequest) {
487 case USB_REQ_DFU_GETSTATUS:
488
489 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
490 value = handle_getstatus(req);
491 f_dfu->blk_seq_num = 0;
492 puts("DOWNLOAD ... OK\nCtrl+C to exit ...\n");
493 break;
494 case USB_REQ_DFU_GETSTATE:
495 value = handle_getstate(req);
496 break;
497 default:
498 f_dfu->dfu_state = DFU_STATE_dfuERROR;
499 value = RET_STALL;
500 break;
501 }
502 return value;
503}
504
505static int state_dfu_upload_idle(struct f_dfu *f_dfu,
506 const struct usb_ctrlrequest *ctrl,
507 struct usb_gadget *gadget,
508 struct usb_request *req)
509{
510 u16 w_value = le16_to_cpu(ctrl->wValue);
511 u16 len = le16_to_cpu(ctrl->wLength);
512 int value = 0;
513
514 switch (ctrl->bRequest) {
515 case USB_REQ_DFU_UPLOAD:
516
517 f_dfu->blk_seq_num = w_value;
518 value = handle_upload(req, len);
519 if (value >= 0 && value < len)
520 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
521 break;
522 case USB_REQ_DFU_ABORT:
523 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
524
525 value = RET_ZLP;
526 break;
527 case USB_REQ_DFU_GETSTATUS:
528 value = handle_getstatus(req);
529 break;
530 case USB_REQ_DFU_GETSTATE:
531 value = handle_getstate(req);
532 break;
533 default:
534 f_dfu->dfu_state = DFU_STATE_dfuERROR;
535 value = RET_STALL;
536 break;
537 }
538
539 return value;
540}
541
542static int state_dfu_error(struct f_dfu *f_dfu,
543 const struct usb_ctrlrequest *ctrl,
544 struct usb_gadget *gadget,
545 struct usb_request *req)
546{
547 int value = 0;
548
549 switch (ctrl->bRequest) {
550 case USB_REQ_DFU_GETSTATUS:
551 value = handle_getstatus(req);
552 break;
553 case USB_REQ_DFU_GETSTATE:
554 value = handle_getstate(req);
555 break;
556 case USB_REQ_DFU_CLRSTATUS:
557 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
558 f_dfu->dfu_status = DFU_STATUS_OK;
559
560 value = RET_ZLP;
561 break;
562 default:
563 f_dfu->dfu_state = DFU_STATE_dfuERROR;
564 value = RET_STALL;
565 break;
566 }
567
568 return value;
569}
570
571static dfu_state_fn dfu_state[] = {
572 state_app_idle,
573 state_app_detach,
574 state_dfu_idle,
575 state_dfu_dnload_sync,
576 state_dfu_dnbusy,
577 state_dfu_dnload_idle,
578 state_dfu_manifest_sync,
579 state_dfu_manifest,
580 NULL,
581 state_dfu_upload_idle,
582 state_dfu_error
583};
584
585static int
586dfu_handle(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
587{
588 struct usb_gadget *gadget = f->config->cdev->gadget;
589 struct usb_request *req = f->config->cdev->req;
590 struct f_dfu *f_dfu = f->config->cdev->req->context;
591 u16 len = le16_to_cpu(ctrl->wLength);
592 u16 w_value = le16_to_cpu(ctrl->wValue);
593 int value = 0;
594 u8 req_type = ctrl->bRequestType & USB_TYPE_MASK;
595
596 debug("w_value: 0x%x len: 0x%x\n", w_value, len);
597 debug("req_type: 0x%x ctrl->bRequest: 0x%x f_dfu->dfu_state: 0x%x\n",
598 req_type, ctrl->bRequest, f_dfu->dfu_state);
599
600#ifdef CONFIG_DFU_TIMEOUT
601
602 dfu_set_timeout(0);
603#endif
604
605 if (req_type == USB_TYPE_STANDARD) {
606 if (ctrl->bRequest == USB_REQ_GET_DESCRIPTOR &&
607 (w_value >> 8) == DFU_DT_FUNC) {
608 value = min(len, (u16) sizeof(dfu_func));
609 memcpy(req->buf, &dfu_func, value);
610 }
611 } else
612 value = dfu_state[f_dfu->dfu_state] (f_dfu, ctrl, gadget, req);
613
614 if (value >= 0) {
615 req->length = value;
616 req->zero = value < len;
617 value = usb_ep_queue(gadget->ep0, req, 0);
618 if (value < 0) {
619 debug("ep_queue --> %d\n", value);
620 req->status = 0;
621 }
622 }
623
624 return value;
625}
626
627
628
629static int
630dfu_prepare_strings(struct f_dfu *f_dfu, int n)
631{
632 struct dfu_entity *de = NULL;
633 int i = 0;
634
635 f_dfu->strings = calloc(sizeof(struct usb_string), n + 1);
636 if (!f_dfu->strings)
637 return -ENOMEM;
638
639 for (i = 0; i < n; ++i) {
640 de = dfu_get_entity(i);
641 f_dfu->strings[i].s = de->name;
642 }
643
644 f_dfu->strings[i].id = 0;
645 f_dfu->strings[i].s = NULL;
646
647 return 0;
648}
649
650static int dfu_prepare_function(struct f_dfu *f_dfu, int n)
651{
652 struct usb_interface_descriptor *d;
653 int i = 0;
654
655 f_dfu->function = calloc(sizeof(struct usb_descriptor_header *), n + 2);
656 if (!f_dfu->function)
657 goto enomem;
658
659 for (i = 0; i < n; ++i) {
660 d = calloc(sizeof(*d), 1);
661 if (!d)
662 goto enomem;
663
664 d->bLength = sizeof(*d);
665 d->bDescriptorType = USB_DT_INTERFACE;
666 d->bAlternateSetting = i;
667 d->bNumEndpoints = 0;
668 d->bInterfaceClass = USB_CLASS_APP_SPEC;
669 d->bInterfaceSubClass = 1;
670 d->bInterfaceProtocol = 2;
671
672 f_dfu->function[i] = (struct usb_descriptor_header *)d;
673 }
674
675
676 f_dfu->function[i] = calloc(sizeof(dfu_func), 1);
677 if (!f_dfu->function[i])
678 goto enomem;
679 memcpy(f_dfu->function[i], &dfu_func, sizeof(dfu_func));
680
681 i++;
682 f_dfu->function[i] = NULL;
683
684 return 0;
685
686enomem:
687 while (i) {
688 free(f_dfu->function[--i]);
689 f_dfu->function[i] = NULL;
690 }
691 free(f_dfu->function);
692
693 return -ENOMEM;
694}
695
696static int dfu_bind(struct usb_configuration *c, struct usb_function *f)
697{
698 struct usb_composite_dev *cdev = c->cdev;
699 struct f_dfu *f_dfu = func_to_dfu(f);
700 const char *s;
701 int alt_num = dfu_get_alt_number();
702 int rv, id, i;
703
704 id = usb_interface_id(c, f);
705 if (id < 0)
706 return id;
707 dfu_intf_runtime.bInterfaceNumber = id;
708
709 f_dfu->dfu_state = DFU_STATE_appIDLE;
710 f_dfu->dfu_status = DFU_STATUS_OK;
711
712 rv = dfu_prepare_function(f_dfu, alt_num);
713 if (rv)
714 goto error;
715
716 rv = dfu_prepare_strings(f_dfu, alt_num);
717 if (rv)
718 goto error;
719 for (i = 0; i < alt_num; i++) {
720 id = usb_string_id(cdev);
721 if (id < 0)
722 return id;
723 f_dfu->strings[i].id = id;
724 ((struct usb_interface_descriptor *)f_dfu->function[i])
725 ->iInterface = id;
726 }
727
728 to_dfu_mode(f_dfu);
729
730 stringtab_dfu.strings = f_dfu->strings;
731
732 cdev->req->context = f_dfu;
733
734 s = env_get("serial#");
735 if (s)
736 g_dnl_set_serialnumber((char *)s);
737
738error:
739 return rv;
740}
741
742static void dfu_unbind(struct usb_configuration *c, struct usb_function *f)
743{
744 struct f_dfu *f_dfu = func_to_dfu(f);
745 int alt_num = dfu_get_alt_number();
746 int i;
747
748 if (f_dfu->strings) {
749 i = alt_num;
750 while (i)
751 f_dfu->strings[--i].s = NULL;
752
753 free(f_dfu->strings);
754 }
755
756 if (f_dfu->function) {
757 i = alt_num;
758 i++;
759 while (i) {
760 free(f_dfu->function[--i]);
761 f_dfu->function[i] = NULL;
762 }
763 free(f_dfu->function);
764 }
765
766 free(f_dfu);
767}
768
769static int dfu_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
770{
771 struct f_dfu *f_dfu = func_to_dfu(f);
772
773 debug("%s: intf:%d alt:%d\n", __func__, intf, alt);
774
775 f_dfu->altsetting = alt;
776 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
777 f_dfu->dfu_status = DFU_STATUS_OK;
778
779 return 0;
780}
781
782static int __dfu_get_alt(struct usb_function *f, unsigned intf)
783{
784 struct f_dfu *f_dfu = func_to_dfu(f);
785
786 return f_dfu->altsetting;
787}
788
789
790static void dfu_disable(struct usb_function *f)
791{
792 struct f_dfu *f_dfu = func_to_dfu(f);
793 if (f_dfu->config == 0)
794 return;
795
796 debug("%s: reset config\n", __func__);
797
798 f_dfu->config = 0;
799}
800
801static int dfu_bind_config(struct usb_configuration *c)
802{
803 struct f_dfu *f_dfu;
804 int status;
805
806 f_dfu = calloc(sizeof(*f_dfu), 1);
807 if (!f_dfu)
808 return -ENOMEM;
809 f_dfu->usb_function.name = "dfu";
810 f_dfu->usb_function.hs_descriptors = dfu_runtime_descs;
811 f_dfu->usb_function.descriptors = dfu_runtime_descs;
812 f_dfu->usb_function.bind = dfu_bind;
813 f_dfu->usb_function.unbind = dfu_unbind;
814 f_dfu->usb_function.set_alt = dfu_set_alt;
815 f_dfu->usb_function.get_alt = __dfu_get_alt;
816 f_dfu->usb_function.disable = dfu_disable;
817 f_dfu->usb_function.strings = dfu_generic_strings;
818 f_dfu->usb_function.setup = dfu_handle;
819 f_dfu->poll_timeout = DFU_DEFAULT_POLL_TIMEOUT;
820
821 status = usb_add_function(c, &f_dfu->usb_function);
822 if (status)
823 free(f_dfu);
824
825 return status;
826}
827
828int dfu_add(struct usb_configuration *c)
829{
830 int id;
831
832 id = usb_string_id(c->cdev);
833 if (id < 0)
834 return id;
835 strings_dfu_generic[0].id = id;
836 dfu_intf_runtime.iInterface = id;
837
838 debug("%s: cdev: 0x%p gadget:0x%p gadget->ep0: 0x%p\n", __func__,
839 c->cdev, c->cdev->gadget, c->cdev->gadget->ep0);
840
841 return dfu_bind_config(c);
842}
843
844DECLARE_GADGET_BIND_CALLBACK(usb_dnl_dfu, dfu_add);
845
