This source file includes following definitions.
- __usbhsg_queue_pop
- usbhsg_queue_pop
- usbhsg_queue_done
- usbhsg_queue_push
- usbhsg_dma_map_ctrl
- usbhsg_recip_handler_std_control_done
- usbhsg_recip_handler_std_clear_endpoint
- usbhsg_recip_handler_std_set_device
- usbhsg_recip_handler_std_set_endpoint
- __usbhsg_recip_send_complete
- __usbhsg_recip_send_status
- usbhsg_recip_handler_std_get_device
- usbhsg_recip_handler_std_get_interface
- usbhsg_recip_handler_std_get_endpoint
- usbhsg_recip_run_handle
- usbhsg_irq_dev_state
- usbhsg_irq_ctrl_stage
- usbhsg_pipe_disable
- usbhsg_ep_enable
- usbhsg_ep_disable
- usbhsg_ep_alloc_request
- usbhsg_ep_free_request
- usbhsg_ep_queue
- usbhsg_ep_dequeue
- __usbhsg_ep_set_halt_wedge
- usbhsg_ep_set_halt
- usbhsg_ep_set_wedge
- usbhsg_can_pullup
- usbhsg_update_pullup
- usbhsg_try_start
- usbhsg_try_stop
- usbhsm_phy_get_vbus
- usbhs_mod_phy_mode
- usbhsg_gadget_start
- usbhsg_gadget_stop
- usbhsg_get_frame
- usbhsg_pullup
- usbhsg_set_selfpowered
- usbhsg_vbus_session
- usbhsg_start
- usbhsg_stop
- usbhs_mod_gadget_probe
- usbhs_mod_gadget_remove
1
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8
9 #include <linux/delay.h>
10 #include <linux/dma-mapping.h>
11 #include <linux/io.h>
12 #include <linux/module.h>
13 #include <linux/platform_device.h>
14 #include <linux/usb/ch9.h>
15 #include <linux/usb/gadget.h>
16 #include <linux/usb/otg.h>
17 #include "common.h"
18
19
20
21
22 struct usbhsg_request {
23 struct usb_request req;
24 struct usbhs_pkt pkt;
25 };
26
27 #define EP_NAME_SIZE 8
28 struct usbhsg_gpriv;
29 struct usbhsg_uep {
30 struct usb_ep ep;
31 struct usbhs_pipe *pipe;
32 spinlock_t lock;
33
34 char ep_name[EP_NAME_SIZE];
35
36 struct usbhsg_gpriv *gpriv;
37 };
38
39 struct usbhsg_gpriv {
40 struct usb_gadget gadget;
41 struct usbhs_mod mod;
42
43 struct usbhsg_uep *uep;
44 int uep_size;
45
46 struct usb_gadget_driver *driver;
47 struct usb_phy *transceiver;
48 bool vbus_active;
49
50 u32 status;
51 #define USBHSG_STATUS_STARTED (1 << 0)
52 #define USBHSG_STATUS_REGISTERD (1 << 1)
53 #define USBHSG_STATUS_WEDGE (1 << 2)
54 #define USBHSG_STATUS_SELF_POWERED (1 << 3)
55 #define USBHSG_STATUS_SOFT_CONNECT (1 << 4)
56 };
57
58 struct usbhsg_recip_handle {
59 char *name;
60 int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
61 struct usb_ctrlrequest *ctrl);
62 int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
63 struct usb_ctrlrequest *ctrl);
64 int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
65 struct usb_ctrlrequest *ctrl);
66 };
67
68
69
70
71 #define usbhsg_priv_to_gpriv(priv) \
72 container_of( \
73 usbhs_mod_get(priv, USBHS_GADGET), \
74 struct usbhsg_gpriv, mod)
75
76 #define __usbhsg_for_each_uep(start, pos, g, i) \
77 for ((i) = start; \
78 ((i) < (g)->uep_size) && ((pos) = (g)->uep + (i)); \
79 (i)++)
80
81 #define usbhsg_for_each_uep(pos, gpriv, i) \
82 __usbhsg_for_each_uep(1, pos, gpriv, i)
83
84 #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \
85 __usbhsg_for_each_uep(0, pos, gpriv, i)
86
87 #define usbhsg_gadget_to_gpriv(g)\
88 container_of(g, struct usbhsg_gpriv, gadget)
89
90 #define usbhsg_req_to_ureq(r)\
91 container_of(r, struct usbhsg_request, req)
92
93 #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep)
94 #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv)
95 #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv)
96 #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep)
97 #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i)
98 #define usbhsg_uep_to_gpriv(u) ((u)->gpriv)
99 #define usbhsg_uep_to_pipe(u) ((u)->pipe)
100 #define usbhsg_pipe_to_uep(p) ((p)->mod_private)
101 #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
102
103 #define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
104 #define usbhsg_pkt_to_ureq(i) \
105 container_of(i, struct usbhsg_request, pkt)
106
107 #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
108
109
110 #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0)
111 #define usbhsg_status_set(gp, b) (gp->status |= b)
112 #define usbhsg_status_clr(gp, b) (gp->status &= ~b)
113 #define usbhsg_status_has(gp, b) (gp->status & b)
114
115
116
117
118 static void __usbhsg_queue_pop(struct usbhsg_uep *uep,
119 struct usbhsg_request *ureq,
120 int status)
121 {
122 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
123 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
124 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
125 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
126
127 if (pipe)
128 dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
129
130 ureq->req.status = status;
131 spin_unlock(usbhs_priv_to_lock(priv));
132 usb_gadget_giveback_request(&uep->ep, &ureq->req);
133 spin_lock(usbhs_priv_to_lock(priv));
134 }
135
136 static void usbhsg_queue_pop(struct usbhsg_uep *uep,
137 struct usbhsg_request *ureq,
138 int status)
139 {
140 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
141 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
142 unsigned long flags;
143
144 usbhs_lock(priv, flags);
145 __usbhsg_queue_pop(uep, ureq, status);
146 usbhs_unlock(priv, flags);
147 }
148
149 static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
150 {
151 struct usbhs_pipe *pipe = pkt->pipe;
152 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
153 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
154 unsigned long flags;
155
156 ureq->req.actual = pkt->actual;
157
158 usbhs_lock(priv, flags);
159 if (uep)
160 __usbhsg_queue_pop(uep, ureq, 0);
161 usbhs_unlock(priv, flags);
162 }
163
164 static void usbhsg_queue_push(struct usbhsg_uep *uep,
165 struct usbhsg_request *ureq)
166 {
167 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
168 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
169 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
170 struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
171 struct usb_request *req = &ureq->req;
172
173 req->actual = 0;
174 req->status = -EINPROGRESS;
175 usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
176 req->buf, req->length, req->zero, -1);
177 usbhs_pkt_start(pipe);
178
179 dev_dbg(dev, "pipe %d : queue push (%d)\n",
180 usbhs_pipe_number(pipe),
181 req->length);
182 }
183
184
185
186
187 static int usbhsg_dma_map_ctrl(struct device *dma_dev, struct usbhs_pkt *pkt,
188 int map)
189 {
190 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
191 struct usb_request *req = &ureq->req;
192 struct usbhs_pipe *pipe = pkt->pipe;
193 enum dma_data_direction dir;
194 int ret = 0;
195
196 dir = usbhs_pipe_is_dir_host(pipe);
197
198 if (map) {
199
200 WARN_ON(req->num_sgs);
201
202 ret = usb_gadget_map_request_by_dev(dma_dev, req, dir);
203 if (ret < 0)
204 return ret;
205
206 pkt->dma = req->dma;
207 } else {
208 usb_gadget_unmap_request_by_dev(dma_dev, req, dir);
209 }
210
211 return ret;
212 }
213
214
215
216
217 static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
218 struct usbhsg_uep *uep,
219 struct usb_ctrlrequest *ctrl)
220 {
221 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
222 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
223 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
224
225 usbhs_dcp_control_transfer_done(pipe);
226
227 return 0;
228 }
229
230 static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
231 struct usbhsg_uep *uep,
232 struct usb_ctrlrequest *ctrl)
233 {
234 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
235 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
236
237 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
238 usbhs_pipe_disable(pipe);
239 usbhs_pipe_sequence_data0(pipe);
240 usbhs_pipe_enable(pipe);
241 }
242
243 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
244
245 usbhs_pkt_start(pipe);
246
247 return 0;
248 }
249
250 static struct usbhsg_recip_handle req_clear_feature = {
251 .name = "clear feature",
252 .device = usbhsg_recip_handler_std_control_done,
253 .interface = usbhsg_recip_handler_std_control_done,
254 .endpoint = usbhsg_recip_handler_std_clear_endpoint,
255 };
256
257
258
259
260 static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv,
261 struct usbhsg_uep *uep,
262 struct usb_ctrlrequest *ctrl)
263 {
264 switch (le16_to_cpu(ctrl->wValue)) {
265 case USB_DEVICE_TEST_MODE:
266 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
267 udelay(100);
268 usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex) >> 8);
269 break;
270 default:
271 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
272 break;
273 }
274
275 return 0;
276 }
277
278 static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv,
279 struct usbhsg_uep *uep,
280 struct usb_ctrlrequest *ctrl)
281 {
282 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
283
284 usbhs_pipe_stall(pipe);
285
286 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
287
288 return 0;
289 }
290
291 static struct usbhsg_recip_handle req_set_feature = {
292 .name = "set feature",
293 .device = usbhsg_recip_handler_std_set_device,
294 .interface = usbhsg_recip_handler_std_control_done,
295 .endpoint = usbhsg_recip_handler_std_set_endpoint,
296 };
297
298
299
300
301 static void __usbhsg_recip_send_complete(struct usb_ep *ep,
302 struct usb_request *req)
303 {
304 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
305
306
307 kfree(ureq->pkt.buf);
308 usb_ep_free_request(ep, req);
309 }
310
311 static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv,
312 unsigned short status)
313 {
314 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
315 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
316 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
317 struct usb_request *req;
318 __le16 *buf;
319
320
321 req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC);
322 if (!req) {
323 dev_err(dev, "recip request allocation fail\n");
324 return;
325 }
326
327
328 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
329 if (!buf) {
330 usb_ep_free_request(&dcp->ep, req);
331 return;
332 }
333
334
335 *buf = cpu_to_le16(status);
336
337
338 req->complete = __usbhsg_recip_send_complete;
339 req->buf = buf;
340 req->length = sizeof(*buf);
341 req->zero = 0;
342
343
344 pipe->handler = &usbhs_fifo_pio_push_handler;
345 usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
346 }
347
348 static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv,
349 struct usbhsg_uep *uep,
350 struct usb_ctrlrequest *ctrl)
351 {
352 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
353 unsigned short status = 0;
354
355 if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED))
356 status = 1 << USB_DEVICE_SELF_POWERED;
357
358 __usbhsg_recip_send_status(gpriv, status);
359
360 return 0;
361 }
362
363 static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv,
364 struct usbhsg_uep *uep,
365 struct usb_ctrlrequest *ctrl)
366 {
367 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
368 unsigned short status = 0;
369
370 __usbhsg_recip_send_status(gpriv, status);
371
372 return 0;
373 }
374
375 static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv,
376 struct usbhsg_uep *uep,
377 struct usb_ctrlrequest *ctrl)
378 {
379 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
380 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
381 unsigned short status = 0;
382
383 if (usbhs_pipe_is_stall(pipe))
384 status = 1 << USB_ENDPOINT_HALT;
385
386 __usbhsg_recip_send_status(gpriv, status);
387
388 return 0;
389 }
390
391 static struct usbhsg_recip_handle req_get_status = {
392 .name = "get status",
393 .device = usbhsg_recip_handler_std_get_device,
394 .interface = usbhsg_recip_handler_std_get_interface,
395 .endpoint = usbhsg_recip_handler_std_get_endpoint,
396 };
397
398
399
400
401 static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
402 struct usbhsg_recip_handle *handler,
403 struct usb_ctrlrequest *ctrl)
404 {
405 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
406 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
407 struct usbhsg_uep *uep;
408 struct usbhs_pipe *pipe;
409 int recip = ctrl->bRequestType & USB_RECIP_MASK;
410 int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
411 int ret = 0;
412 int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
413 struct usb_ctrlrequest *ctrl);
414 char *msg;
415
416 uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
417 pipe = usbhsg_uep_to_pipe(uep);
418 if (!pipe) {
419 dev_err(dev, "wrong recip request\n");
420 return -EINVAL;
421 }
422
423 switch (recip) {
424 case USB_RECIP_DEVICE:
425 msg = "DEVICE";
426 func = handler->device;
427 break;
428 case USB_RECIP_INTERFACE:
429 msg = "INTERFACE";
430 func = handler->interface;
431 break;
432 case USB_RECIP_ENDPOINT:
433 msg = "ENDPOINT";
434 func = handler->endpoint;
435 break;
436 default:
437 dev_warn(dev, "unsupported RECIP(%d)\n", recip);
438 func = NULL;
439 ret = -EINVAL;
440 }
441
442 if (func) {
443 dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
444 ret = func(priv, uep, ctrl);
445 }
446
447 return ret;
448 }
449
450
451
452
453
454
455 static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
456 struct usbhs_irq_state *irq_state)
457 {
458 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
459 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
460 int state = usbhs_status_get_device_state(irq_state);
461
462 gpriv->gadget.speed = usbhs_bus_get_speed(priv);
463
464 dev_dbg(dev, "state = %x : speed : %d\n", state, gpriv->gadget.speed);
465
466 if (gpriv->gadget.speed != USB_SPEED_UNKNOWN &&
467 (state & SUSPENDED_STATE)) {
468 if (gpriv->driver && gpriv->driver->suspend)
469 gpriv->driver->suspend(&gpriv->gadget);
470 usb_gadget_set_state(&gpriv->gadget, USB_STATE_SUSPENDED);
471 }
472
473 return 0;
474 }
475
476 static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
477 struct usbhs_irq_state *irq_state)
478 {
479 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
480 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
481 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
482 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
483 struct usb_ctrlrequest ctrl;
484 struct usbhsg_recip_handle *recip_handler = NULL;
485 int stage = usbhs_status_get_ctrl_stage(irq_state);
486 int ret = 0;
487
488 dev_dbg(dev, "stage = %d\n", stage);
489
490
491
492
493
494
495
496
497
498
499 switch (stage) {
500 case READ_DATA_STAGE:
501 pipe->handler = &usbhs_fifo_pio_push_handler;
502 break;
503 case WRITE_DATA_STAGE:
504 pipe->handler = &usbhs_fifo_pio_pop_handler;
505 break;
506 case NODATA_STATUS_STAGE:
507 pipe->handler = &usbhs_ctrl_stage_end_handler;
508 break;
509 case READ_STATUS_STAGE:
510 case WRITE_STATUS_STAGE:
511 usbhs_dcp_control_transfer_done(pipe);
512
513 default:
514 return ret;
515 }
516
517
518
519
520 usbhs_usbreq_get_val(priv, &ctrl);
521
522 switch (ctrl.bRequestType & USB_TYPE_MASK) {
523 case USB_TYPE_STANDARD:
524 switch (ctrl.bRequest) {
525 case USB_REQ_CLEAR_FEATURE:
526 recip_handler = &req_clear_feature;
527 break;
528 case USB_REQ_SET_FEATURE:
529 recip_handler = &req_set_feature;
530 break;
531 case USB_REQ_GET_STATUS:
532 recip_handler = &req_get_status;
533 break;
534 }
535 }
536
537
538
539
540 if (recip_handler)
541 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
542 else
543 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
544
545 if (ret < 0)
546 usbhs_pipe_stall(pipe);
547
548 return ret;
549 }
550
551
552
553
554
555
556 static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
557 {
558 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
559 struct usbhs_pkt *pkt;
560
561 while (1) {
562 pkt = usbhs_pkt_pop(pipe, NULL);
563 if (!pkt)
564 break;
565
566 usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ESHUTDOWN);
567 }
568
569 usbhs_pipe_disable(pipe);
570
571 return 0;
572 }
573
574
575
576
577
578
579 static int usbhsg_ep_enable(struct usb_ep *ep,
580 const struct usb_endpoint_descriptor *desc)
581 {
582 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
583 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
584 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
585 struct usbhs_pipe *pipe;
586 int ret = -EIO;
587 unsigned long flags;
588
589 usbhs_lock(priv, flags);
590
591
592
593
594
595 if (uep->pipe) {
596 usbhs_pipe_clear(uep->pipe);
597 usbhs_pipe_sequence_data0(uep->pipe);
598 ret = 0;
599 goto usbhsg_ep_enable_end;
600 }
601
602 pipe = usbhs_pipe_malloc(priv,
603 usb_endpoint_type(desc),
604 usb_endpoint_dir_in(desc));
605 if (pipe) {
606 uep->pipe = pipe;
607 pipe->mod_private = uep;
608
609
610 usbhs_pipe_config_update(pipe, 0,
611 usb_endpoint_num(desc),
612 usb_endpoint_maxp(desc));
613
614
615
616
617
618
619 if (usb_endpoint_dir_in(desc)) {
620 pipe->handler = &usbhs_fifo_dma_push_handler;
621 } else {
622 pipe->handler = &usbhs_fifo_dma_pop_handler;
623 usbhs_xxxsts_clear(priv, BRDYSTS,
624 usbhs_pipe_number(pipe));
625 }
626
627 ret = 0;
628 }
629
630 usbhsg_ep_enable_end:
631 usbhs_unlock(priv, flags);
632
633 return ret;
634 }
635
636 static int usbhsg_ep_disable(struct usb_ep *ep)
637 {
638 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
639 struct usbhs_pipe *pipe;
640 unsigned long flags;
641
642 spin_lock_irqsave(&uep->lock, flags);
643 pipe = usbhsg_uep_to_pipe(uep);
644 if (!pipe)
645 goto out;
646
647 usbhsg_pipe_disable(uep);
648 usbhs_pipe_free(pipe);
649
650 uep->pipe->mod_private = NULL;
651 uep->pipe = NULL;
652
653 out:
654 spin_unlock_irqrestore(&uep->lock, flags);
655
656 return 0;
657 }
658
659 static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
660 gfp_t gfp_flags)
661 {
662 struct usbhsg_request *ureq;
663
664 ureq = kzalloc(sizeof *ureq, gfp_flags);
665 if (!ureq)
666 return NULL;
667
668 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
669
670 return &ureq->req;
671 }
672
673 static void usbhsg_ep_free_request(struct usb_ep *ep,
674 struct usb_request *req)
675 {
676 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
677
678 WARN_ON(!list_empty(&ureq->pkt.node));
679 kfree(ureq);
680 }
681
682 static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
683 gfp_t gfp_flags)
684 {
685 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
686 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
687 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
688 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
689
690
691 if (usbhsg_is_not_connected(gpriv) ||
692 unlikely(!gpriv->driver) ||
693 unlikely(!pipe))
694 return -ESHUTDOWN;
695
696 usbhsg_queue_push(uep, ureq);
697
698 return 0;
699 }
700
701 static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
702 {
703 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
704 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
705 struct usbhs_pipe *pipe;
706 unsigned long flags;
707
708 spin_lock_irqsave(&uep->lock, flags);
709 pipe = usbhsg_uep_to_pipe(uep);
710 if (pipe)
711 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
712
713
714
715
716
717 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
718 spin_unlock_irqrestore(&uep->lock, flags);
719
720 return 0;
721 }
722
723 static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
724 {
725 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
726 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
727 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
728 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
729 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
730 unsigned long flags;
731 int ret = 0;
732
733 dev_dbg(dev, "set halt %d (pipe %d)\n",
734 halt, usbhs_pipe_number(pipe));
735
736
737 usbhs_lock(priv, flags);
738
739
740
741
742
743
744
745 if (!usbhs_pipe_is_dir_in(pipe) && (__usbhsf_pkt_get(pipe) ||
746 usbhs_pipe_contains_transmittable_data(pipe))) {
747 ret = -EAGAIN;
748 goto out;
749 }
750
751 if (halt)
752 usbhs_pipe_stall(pipe);
753 else
754 usbhs_pipe_disable(pipe);
755
756 if (halt && wedge)
757 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
758 else
759 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
760
761 out:
762 usbhs_unlock(priv, flags);
763
764
765 return ret;
766 }
767
768 static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
769 {
770 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
771 }
772
773 static int usbhsg_ep_set_wedge(struct usb_ep *ep)
774 {
775 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
776 }
777
778 static const struct usb_ep_ops usbhsg_ep_ops = {
779 .enable = usbhsg_ep_enable,
780 .disable = usbhsg_ep_disable,
781
782 .alloc_request = usbhsg_ep_alloc_request,
783 .free_request = usbhsg_ep_free_request,
784
785 .queue = usbhsg_ep_queue,
786 .dequeue = usbhsg_ep_dequeue,
787
788 .set_halt = usbhsg_ep_set_halt,
789 .set_wedge = usbhsg_ep_set_wedge,
790 };
791
792
793
794
795 static int usbhsg_can_pullup(struct usbhs_priv *priv)
796 {
797 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
798
799 return gpriv->driver &&
800 usbhsg_status_has(gpriv, USBHSG_STATUS_SOFT_CONNECT);
801 }
802
803 static void usbhsg_update_pullup(struct usbhs_priv *priv)
804 {
805 if (usbhsg_can_pullup(priv))
806 usbhs_sys_function_pullup(priv, 1);
807 else
808 usbhs_sys_function_pullup(priv, 0);
809 }
810
811
812
813
814 static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
815 {
816 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
817 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
818 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
819 struct device *dev = usbhs_priv_to_dev(priv);
820 unsigned long flags;
821 int ret = 0;
822
823
824 usbhs_lock(priv, flags);
825
826 usbhsg_status_set(gpriv, status);
827 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
828 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
829 ret = -1;
830
831 usbhs_unlock(priv, flags);
832
833
834 if (ret < 0)
835 return 0;
836
837
838
839
840 dev_dbg(dev, "start gadget\n");
841
842
843
844
845 usbhs_fifo_init(priv);
846 usbhs_pipe_init(priv,
847 usbhsg_dma_map_ctrl);
848
849
850 dcp->pipe = usbhs_dcp_malloc(priv);
851 dcp->pipe->mod_private = dcp;
852 usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
853
854
855
856
857
858
859
860 usbhs_sys_function_ctrl(priv, 1);
861 usbhsg_update_pullup(priv);
862
863
864
865
866 mod->irq_dev_state = usbhsg_irq_dev_state;
867 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
868 usbhs_irq_callback_update(priv, mod);
869
870 return 0;
871 }
872
873 static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
874 {
875 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
876 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
877 struct usbhsg_uep *uep;
878 struct device *dev = usbhs_priv_to_dev(priv);
879 unsigned long flags;
880 int ret = 0, i;
881
882
883 usbhs_lock(priv, flags);
884
885 usbhsg_status_clr(gpriv, status);
886 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
887 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
888 ret = -1;
889
890 usbhs_unlock(priv, flags);
891
892
893 if (ret < 0)
894 return 0;
895
896
897
898
899 usbhs_fifo_quit(priv);
900
901
902 mod->irq_dev_state = NULL;
903 mod->irq_ctrl_stage = NULL;
904 usbhs_irq_callback_update(priv, mod);
905
906 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
907
908
909 usbhs_sys_set_test_mode(priv, 0);
910 usbhs_sys_function_ctrl(priv, 0);
911
912
913 usbhsg_for_each_uep_with_dcp(uep, gpriv, i)
914 usbhsg_ep_disable(&uep->ep);
915
916 dev_dbg(dev, "stop gadget\n");
917
918 return 0;
919 }
920
921
922
923
924 static int usbhsm_phy_get_vbus(struct platform_device *pdev)
925 {
926 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
927 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
928
929 return gpriv->vbus_active;
930 }
931
932 static void usbhs_mod_phy_mode(struct usbhs_priv *priv)
933 {
934 struct usbhs_mod_info *info = &priv->mod_info;
935
936 info->irq_vbus = NULL;
937 info->get_vbus = usbhsm_phy_get_vbus;
938
939 usbhs_irq_callback_update(priv, NULL);
940 }
941
942
943
944
945
946
947 static int usbhsg_gadget_start(struct usb_gadget *gadget,
948 struct usb_gadget_driver *driver)
949 {
950 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
951 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
952 struct device *dev = usbhs_priv_to_dev(priv);
953 int ret;
954
955 if (!driver ||
956 !driver->setup ||
957 driver->max_speed < USB_SPEED_FULL)
958 return -EINVAL;
959
960
961 if (!IS_ERR_OR_NULL(gpriv->transceiver)) {
962 ret = otg_set_peripheral(gpriv->transceiver->otg,
963 &gpriv->gadget);
964 if (ret) {
965 dev_err(dev, "%s: can't bind to transceiver\n",
966 gpriv->gadget.name);
967 return ret;
968 }
969
970
971 usbhs_mod_phy_mode(priv);
972 }
973
974
975 gpriv->driver = driver;
976
977 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
978 }
979
980 static int usbhsg_gadget_stop(struct usb_gadget *gadget)
981 {
982 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
983 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
984
985 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
986
987 if (!IS_ERR_OR_NULL(gpriv->transceiver))
988 otg_set_peripheral(gpriv->transceiver->otg, NULL);
989
990 gpriv->driver = NULL;
991
992 return 0;
993 }
994
995
996
997
998 static int usbhsg_get_frame(struct usb_gadget *gadget)
999 {
1000 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1001 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1002
1003 return usbhs_frame_get_num(priv);
1004 }
1005
1006 static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
1007 {
1008 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1009 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1010 unsigned long flags;
1011
1012 usbhs_lock(priv, flags);
1013 if (is_on)
1014 usbhsg_status_set(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1015 else
1016 usbhsg_status_clr(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1017 usbhsg_update_pullup(priv);
1018 usbhs_unlock(priv, flags);
1019
1020 return 0;
1021 }
1022
1023 static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
1024 {
1025 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1026
1027 if (is_self)
1028 usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
1029 else
1030 usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
1031
1032 gadget->is_selfpowered = (is_self != 0);
1033
1034 return 0;
1035 }
1036
1037 static int usbhsg_vbus_session(struct usb_gadget *gadget, int is_active)
1038 {
1039 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1040 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1041 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
1042
1043 gpriv->vbus_active = !!is_active;
1044
1045 usbhsc_schedule_notify_hotplug(pdev);
1046
1047 return 0;
1048 }
1049
1050 static const struct usb_gadget_ops usbhsg_gadget_ops = {
1051 .get_frame = usbhsg_get_frame,
1052 .set_selfpowered = usbhsg_set_selfpowered,
1053 .udc_start = usbhsg_gadget_start,
1054 .udc_stop = usbhsg_gadget_stop,
1055 .pullup = usbhsg_pullup,
1056 .vbus_session = usbhsg_vbus_session,
1057 };
1058
1059 static int usbhsg_start(struct usbhs_priv *priv)
1060 {
1061 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
1062 }
1063
1064 static int usbhsg_stop(struct usbhs_priv *priv)
1065 {
1066 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1067
1068
1069 if (gpriv->driver &&
1070 gpriv->driver->disconnect)
1071 gpriv->driver->disconnect(&gpriv->gadget);
1072
1073 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
1074 }
1075
1076 int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
1077 {
1078 struct usbhsg_gpriv *gpriv;
1079 struct usbhsg_uep *uep;
1080 struct device *dev = usbhs_priv_to_dev(priv);
1081 struct renesas_usbhs_driver_pipe_config *pipe_configs =
1082 usbhs_get_dparam(priv, pipe_configs);
1083 int pipe_size = usbhs_get_dparam(priv, pipe_size);
1084 int i;
1085 int ret;
1086
1087 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
1088 if (!gpriv)
1089 return -ENOMEM;
1090
1091 uep = kcalloc(pipe_size, sizeof(struct usbhsg_uep), GFP_KERNEL);
1092 if (!uep) {
1093 ret = -ENOMEM;
1094 goto usbhs_mod_gadget_probe_err_gpriv;
1095 }
1096
1097 gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED);
1098 dev_info(dev, "%stransceiver found\n",
1099 !IS_ERR(gpriv->transceiver) ? "" : "no ");
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
1113
1114
1115 gpriv->mod.name = "gadget";
1116 gpriv->mod.start = usbhsg_start;
1117 gpriv->mod.stop = usbhsg_stop;
1118 gpriv->uep = uep;
1119 gpriv->uep_size = pipe_size;
1120 usbhsg_status_init(gpriv);
1121
1122
1123
1124
1125 gpriv->gadget.dev.parent = dev;
1126 gpriv->gadget.name = "renesas_usbhs_udc";
1127 gpriv->gadget.ops = &usbhsg_gadget_ops;
1128 gpriv->gadget.max_speed = USB_SPEED_HIGH;
1129 gpriv->gadget.quirk_avoids_skb_reserve = usbhs_get_dparam(priv,
1130 has_usb_dmac);
1131
1132 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
1133
1134
1135
1136
1137 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
1138 uep->gpriv = gpriv;
1139 uep->pipe = NULL;
1140 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
1141
1142 uep->ep.name = uep->ep_name;
1143 uep->ep.ops = &usbhsg_ep_ops;
1144 INIT_LIST_HEAD(&uep->ep.ep_list);
1145 spin_lock_init(&uep->lock);
1146
1147
1148 if (usbhsg_is_dcp(uep)) {
1149 gpriv->gadget.ep0 = &uep->ep;
1150 usb_ep_set_maxpacket_limit(&uep->ep, 64);
1151 uep->ep.caps.type_control = true;
1152 } else {
1153
1154 if (pipe_configs[i].type == USB_ENDPOINT_XFER_ISOC)
1155 uep->ep.caps.type_iso = true;
1156 if (pipe_configs[i].type == USB_ENDPOINT_XFER_BULK)
1157 uep->ep.caps.type_bulk = true;
1158 if (pipe_configs[i].type == USB_ENDPOINT_XFER_INT)
1159 uep->ep.caps.type_int = true;
1160 usb_ep_set_maxpacket_limit(&uep->ep,
1161 pipe_configs[i].bufsize);
1162 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
1163 }
1164 uep->ep.caps.dir_in = true;
1165 uep->ep.caps.dir_out = true;
1166 }
1167
1168 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
1169 if (ret)
1170 goto err_add_udc;
1171
1172
1173 dev_info(dev, "gadget probed\n");
1174
1175 return 0;
1176
1177 err_add_udc:
1178 kfree(gpriv->uep);
1179
1180 usbhs_mod_gadget_probe_err_gpriv:
1181 kfree(gpriv);
1182
1183 return ret;
1184 }
1185
1186 void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
1187 {
1188 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1189
1190 usb_del_gadget_udc(&gpriv->gadget);
1191
1192 kfree(gpriv->uep);
1193 kfree(gpriv);
1194 }