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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 len = len > DFU_USB_BUFSIZ ? DFU_USB_BUFSIZ : len;
325
326 switch (ctrl->bRequest) {
327 case USB_REQ_DFU_DNLOAD:
328 if (!(ctrl->bRequestType & USB_DIR_IN)) {
329 if (len == 0) {
330 f_dfu->dfu_state = DFU_STATE_dfuERROR;
331 value = RET_STALL;
332 break;
333 }
334 f_dfu->dfu_state = DFU_STATE_dfuDNLOAD_SYNC;
335 f_dfu->blk_seq_num = w_value;
336 value = handle_dnload(gadget, len);
337 }
338 break;
339 case USB_REQ_DFU_UPLOAD:
340 if (ctrl->bRequestType & USB_DIR_IN) {
341 f_dfu->dfu_state = DFU_STATE_dfuUPLOAD_IDLE;
342 f_dfu->blk_seq_num = 0;
343 value = handle_upload(req, len);
344 if (value >= 0 && value < len)
345 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
346 }
347 break;
348 case USB_REQ_DFU_ABORT:
349
350 value = RET_ZLP;
351 break;
352 case USB_REQ_DFU_GETSTATUS:
353 value = handle_getstatus(req);
354 break;
355 case USB_REQ_DFU_GETSTATE:
356 value = handle_getstate(req);
357 break;
358 case USB_REQ_DFU_DETACH:
359
360
361
362
363
364
365
366
367 f_dfu->dfu_state =
368 DFU_STATE_dfuMANIFEST_WAIT_RST;
369 to_runtime_mode(f_dfu);
370 f_dfu->dfu_state = DFU_STATE_appIDLE;
371
372 g_dnl_trigger_detach();
373 break;
374 default:
375 f_dfu->dfu_state = DFU_STATE_dfuERROR;
376 value = RET_STALL;
377 break;
378 }
379
380 return value;
381}
382
383static int state_dfu_dnload_sync(struct f_dfu *f_dfu,
384 const struct usb_ctrlrequest *ctrl,
385 struct usb_gadget *gadget,
386 struct usb_request *req)
387{
388 int value = 0;
389
390 switch (ctrl->bRequest) {
391 case USB_REQ_DFU_GETSTATUS:
392 value = handle_getstatus(req);
393 break;
394 case USB_REQ_DFU_GETSTATE:
395 value = handle_getstate(req);
396 break;
397 default:
398 f_dfu->dfu_state = DFU_STATE_dfuERROR;
399 value = RET_STALL;
400 break;
401 }
402
403 return value;
404}
405
406static int state_dfu_dnbusy(struct f_dfu *f_dfu,
407 const struct usb_ctrlrequest *ctrl,
408 struct usb_gadget *gadget,
409 struct usb_request *req)
410{
411 int value = 0;
412
413 switch (ctrl->bRequest) {
414 case USB_REQ_DFU_GETSTATUS:
415 value = handle_getstatus(req);
416 break;
417 default:
418 f_dfu->dfu_state = DFU_STATE_dfuERROR;
419 value = RET_STALL;
420 break;
421 }
422
423 return value;
424}
425
426static int state_dfu_dnload_idle(struct f_dfu *f_dfu,
427 const struct usb_ctrlrequest *ctrl,
428 struct usb_gadget *gadget,
429 struct usb_request *req)
430{
431 u16 w_value = le16_to_cpu(ctrl->wValue);
432 u16 len = le16_to_cpu(ctrl->wLength);
433 int value = 0;
434
435 len = len > DFU_USB_BUFSIZ ? DFU_USB_BUFSIZ : len;
436
437 switch (ctrl->bRequest) {
438 case USB_REQ_DFU_DNLOAD:
439 if (!(ctrl->bRequestType & USB_DIR_IN)) {
440 f_dfu->dfu_state = DFU_STATE_dfuDNLOAD_SYNC;
441 f_dfu->blk_seq_num = w_value;
442 value = handle_dnload(gadget, len);
443 }
444 break;
445 case USB_REQ_DFU_ABORT:
446 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
447 value = RET_ZLP;
448 break;
449 case USB_REQ_DFU_GETSTATUS:
450 value = handle_getstatus(req);
451 break;
452 case USB_REQ_DFU_GETSTATE:
453 value = handle_getstate(req);
454 break;
455 default:
456 f_dfu->dfu_state = DFU_STATE_dfuERROR;
457 value = RET_STALL;
458 break;
459 }
460
461 return value;
462}
463
464static int state_dfu_manifest_sync(struct f_dfu *f_dfu,
465 const struct usb_ctrlrequest *ctrl,
466 struct usb_gadget *gadget,
467 struct usb_request *req)
468{
469 int value = 0;
470
471 switch (ctrl->bRequest) {
472 case USB_REQ_DFU_GETSTATUS:
473
474 f_dfu->dfu_state = DFU_STATE_dfuMANIFEST;
475 value = handle_getstatus(req);
476 f_dfu->blk_seq_num = 0;
477 req->complete = dnload_request_flush;
478 break;
479 case USB_REQ_DFU_GETSTATE:
480 value = handle_getstate(req);
481 break;
482 default:
483 f_dfu->dfu_state = DFU_STATE_dfuERROR;
484 value = RET_STALL;
485 break;
486 }
487
488 return value;
489}
490
491static int state_dfu_manifest(struct f_dfu *f_dfu,
492 const struct usb_ctrlrequest *ctrl,
493 struct usb_gadget *gadget,
494 struct usb_request *req)
495{
496 int value = 0;
497
498 switch (ctrl->bRequest) {
499 case USB_REQ_DFU_GETSTATUS:
500
501 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
502 value = handle_getstatus(req);
503 f_dfu->blk_seq_num = 0;
504 puts("DOWNLOAD ... OK\nCtrl+C to exit ...\n");
505 break;
506 case USB_REQ_DFU_GETSTATE:
507 value = handle_getstate(req);
508 break;
509 default:
510 f_dfu->dfu_state = DFU_STATE_dfuERROR;
511 value = RET_STALL;
512 break;
513 }
514 return value;
515}
516
517static int state_dfu_upload_idle(struct f_dfu *f_dfu,
518 const struct usb_ctrlrequest *ctrl,
519 struct usb_gadget *gadget,
520 struct usb_request *req)
521{
522 u16 w_value = le16_to_cpu(ctrl->wValue);
523 u16 len = le16_to_cpu(ctrl->wLength);
524 int value = 0;
525
526 len = len > DFU_USB_BUFSIZ ? DFU_USB_BUFSIZ : len;
527
528 switch (ctrl->bRequest) {
529 case USB_REQ_DFU_UPLOAD:
530 if (ctrl->bRequestType & USB_DIR_IN) {
531
532 f_dfu->blk_seq_num = w_value;
533 value = handle_upload(req, len);
534 if (value >= 0 && value < len)
535 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
536 }
537 break;
538 case USB_REQ_DFU_ABORT:
539 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
540
541 value = RET_ZLP;
542 break;
543 case USB_REQ_DFU_GETSTATUS:
544 value = handle_getstatus(req);
545 break;
546 case USB_REQ_DFU_GETSTATE:
547 value = handle_getstate(req);
548 break;
549 default:
550 f_dfu->dfu_state = DFU_STATE_dfuERROR;
551 value = RET_STALL;
552 break;
553 }
554
555 return value;
556}
557
558static int state_dfu_error(struct f_dfu *f_dfu,
559 const struct usb_ctrlrequest *ctrl,
560 struct usb_gadget *gadget,
561 struct usb_request *req)
562{
563 int value = 0;
564
565 switch (ctrl->bRequest) {
566 case USB_REQ_DFU_GETSTATUS:
567 value = handle_getstatus(req);
568 break;
569 case USB_REQ_DFU_GETSTATE:
570 value = handle_getstate(req);
571 break;
572 case USB_REQ_DFU_CLRSTATUS:
573 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
574 f_dfu->dfu_status = DFU_STATUS_OK;
575
576 value = RET_ZLP;
577 break;
578 default:
579 f_dfu->dfu_state = DFU_STATE_dfuERROR;
580 value = RET_STALL;
581 break;
582 }
583
584 return value;
585}
586
587static dfu_state_fn dfu_state[] = {
588 state_app_idle,
589 state_app_detach,
590 state_dfu_idle,
591 state_dfu_dnload_sync,
592 state_dfu_dnbusy,
593 state_dfu_dnload_idle,
594 state_dfu_manifest_sync,
595 state_dfu_manifest,
596 NULL,
597 state_dfu_upload_idle,
598 state_dfu_error
599};
600
601static int
602dfu_handle(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
603{
604 struct usb_gadget *gadget = f->config->cdev->gadget;
605 struct usb_request *req = f->config->cdev->req;
606 struct f_dfu *f_dfu = f->config->cdev->req->context;
607 u16 len = le16_to_cpu(ctrl->wLength);
608 u16 w_value = le16_to_cpu(ctrl->wValue);
609 int value = 0;
610 u8 req_type = ctrl->bRequestType & USB_TYPE_MASK;
611
612 len = len > DFU_USB_BUFSIZ ? DFU_USB_BUFSIZ : len;
613
614 debug("w_value: 0x%x len: 0x%x\n", w_value, len);
615 debug("req_type: 0x%x ctrl->bRequest: 0x%x f_dfu->dfu_state: 0x%x\n",
616 req_type, ctrl->bRequest, f_dfu->dfu_state);
617
618#ifdef CONFIG_DFU_TIMEOUT
619
620 dfu_set_timeout(0);
621#endif
622
623 if (req_type == USB_TYPE_STANDARD) {
624 if (ctrl->bRequest == USB_REQ_GET_DESCRIPTOR &&
625 (w_value >> 8) == DFU_DT_FUNC) {
626 value = min(len, (u16) sizeof(dfu_func));
627 memcpy(req->buf, &dfu_func, value);
628 }
629 } else
630 value = dfu_state[f_dfu->dfu_state] (f_dfu, ctrl, gadget, req);
631
632 if (value >= 0) {
633 req->length = value > DFU_USB_BUFSIZ ? DFU_USB_BUFSIZ : value;
634 req->zero = value < len;
635 value = usb_ep_queue(gadget->ep0, req, 0);
636 if (value < 0) {
637 debug("ep_queue --> %d\n", value);
638 req->status = 0;
639 }
640 }
641
642 return value;
643}
644
645
646
647static int
648dfu_prepare_strings(struct f_dfu *f_dfu, int n)
649{
650 struct dfu_entity *de = NULL;
651 int i = 0;
652
653 f_dfu->strings = calloc(sizeof(struct usb_string), n + 1);
654 if (!f_dfu->strings)
655 return -ENOMEM;
656
657 for (i = 0; i < n; ++i) {
658 de = dfu_get_entity(i);
659 f_dfu->strings[i].s = de->name;
660 }
661
662 f_dfu->strings[i].id = 0;
663 f_dfu->strings[i].s = NULL;
664
665 return 0;
666}
667
668static int dfu_prepare_function(struct f_dfu *f_dfu, int n)
669{
670 struct usb_interface_descriptor *d;
671 int i = 0;
672
673 f_dfu->function = calloc(sizeof(struct usb_descriptor_header *), n + 2);
674 if (!f_dfu->function)
675 goto enomem;
676
677 for (i = 0; i < n; ++i) {
678 d = calloc(sizeof(*d), 1);
679 if (!d)
680 goto enomem;
681
682 d->bLength = sizeof(*d);
683 d->bDescriptorType = USB_DT_INTERFACE;
684 d->bAlternateSetting = i;
685 d->bNumEndpoints = 0;
686 d->bInterfaceClass = USB_CLASS_APP_SPEC;
687 d->bInterfaceSubClass = 1;
688 d->bInterfaceProtocol = 2;
689
690 f_dfu->function[i] = (struct usb_descriptor_header *)d;
691 }
692
693
694 f_dfu->function[i] = calloc(sizeof(dfu_func), 1);
695 if (!f_dfu->function[i])
696 goto enomem;
697 memcpy(f_dfu->function[i], &dfu_func, sizeof(dfu_func));
698
699 i++;
700 f_dfu->function[i] = NULL;
701
702 return 0;
703
704enomem:
705 while (i) {
706 free(f_dfu->function[--i]);
707 f_dfu->function[i] = NULL;
708 }
709 free(f_dfu->function);
710
711 return -ENOMEM;
712}
713
714static int dfu_bind(struct usb_configuration *c, struct usb_function *f)
715{
716 struct usb_composite_dev *cdev = c->cdev;
717 struct f_dfu *f_dfu = func_to_dfu(f);
718 const char *s;
719 int alt_num = dfu_get_alt_number();
720 int rv, id, i;
721
722 id = usb_interface_id(c, f);
723 if (id < 0)
724 return id;
725 dfu_intf_runtime.bInterfaceNumber = id;
726
727 f_dfu->dfu_state = DFU_STATE_appIDLE;
728 f_dfu->dfu_status = DFU_STATUS_OK;
729
730 rv = dfu_prepare_function(f_dfu, alt_num);
731 if (rv)
732 goto error;
733
734 rv = dfu_prepare_strings(f_dfu, alt_num);
735 if (rv)
736 goto error;
737 for (i = 0; i < alt_num; i++) {
738 id = usb_string_id(cdev);
739 if (id < 0)
740 return id;
741 f_dfu->strings[i].id = id;
742 ((struct usb_interface_descriptor *)f_dfu->function[i])
743 ->iInterface = id;
744 }
745
746 to_dfu_mode(f_dfu);
747
748 stringtab_dfu.strings = f_dfu->strings;
749
750 cdev->req->context = f_dfu;
751
752 s = env_get("serial#");
753 if (s)
754 g_dnl_set_serialnumber((char *)s);
755
756error:
757 return rv;
758}
759
760static void dfu_unbind(struct usb_configuration *c, struct usb_function *f)
761{
762 struct f_dfu *f_dfu = func_to_dfu(f);
763 int alt_num = dfu_get_alt_number();
764 int i;
765
766 if (f_dfu->strings) {
767 i = alt_num;
768 while (i)
769 f_dfu->strings[--i].s = NULL;
770
771 free(f_dfu->strings);
772 }
773
774 if (f_dfu->function) {
775 i = alt_num;
776 i++;
777 while (i) {
778 free(f_dfu->function[--i]);
779 f_dfu->function[i] = NULL;
780 }
781 free(f_dfu->function);
782 }
783
784 free(f_dfu);
785}
786
787static int dfu_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
788{
789 struct f_dfu *f_dfu = func_to_dfu(f);
790
791 debug("%s: intf:%d alt:%d\n", __func__, intf, alt);
792
793 f_dfu->altsetting = alt;
794 f_dfu->dfu_state = DFU_STATE_dfuIDLE;
795 f_dfu->dfu_status = DFU_STATUS_OK;
796
797 return 0;
798}
799
800static int __dfu_get_alt(struct usb_function *f, unsigned intf)
801{
802 struct f_dfu *f_dfu = func_to_dfu(f);
803
804 return f_dfu->altsetting;
805}
806
807
808static void dfu_disable(struct usb_function *f)
809{
810 struct f_dfu *f_dfu = func_to_dfu(f);
811 if (f_dfu->config == 0)
812 return;
813
814 debug("%s: reset config\n", __func__);
815
816 f_dfu->config = 0;
817}
818
819static int dfu_bind_config(struct usb_configuration *c)
820{
821 struct f_dfu *f_dfu;
822 int status;
823
824 f_dfu = calloc(sizeof(*f_dfu), 1);
825 if (!f_dfu)
826 return -ENOMEM;
827 f_dfu->usb_function.name = "dfu";
828 f_dfu->usb_function.hs_descriptors = dfu_runtime_descs;
829 f_dfu->usb_function.descriptors = dfu_runtime_descs;
830 f_dfu->usb_function.bind = dfu_bind;
831 f_dfu->usb_function.unbind = dfu_unbind;
832 f_dfu->usb_function.set_alt = dfu_set_alt;
833 f_dfu->usb_function.get_alt = __dfu_get_alt;
834 f_dfu->usb_function.disable = dfu_disable;
835 f_dfu->usb_function.strings = dfu_generic_strings;
836 f_dfu->usb_function.setup = dfu_handle;
837 f_dfu->poll_timeout = DFU_DEFAULT_POLL_TIMEOUT;
838
839 status = usb_add_function(c, &f_dfu->usb_function);
840 if (status)
841 free(f_dfu);
842
843 return status;
844}
845
846int dfu_add(struct usb_configuration *c)
847{
848 int id;
849
850 id = usb_string_id(c->cdev);
851 if (id < 0)
852 return id;
853 strings_dfu_generic[0].id = id;
854 dfu_intf_runtime.iInterface = id;
855
856 debug("%s: cdev: 0x%p gadget:0x%p gadget->ep0: 0x%p\n", __func__,
857 c->cdev, c->cdev->gadget, c->cdev->gadget->ep0);
858
859 return dfu_bind_config(c);
860}
861
862DECLARE_GADGET_BIND_CALLBACK(usb_dnl_dfu, dfu_add);
863
