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1/*
2 * Renesas USB driver
3 *
4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
15 *
16 */
17#include <linux/dma-mapping.h>
18#include <linux/io.h>
19#include <linux/module.h>
20#include <linux/platform_device.h>
21#include <linux/usb/ch9.h>
22#include <linux/usb/gadget.h>
23#include "common.h"
24
25/*
26 * struct
27 */
28struct usbhsg_request {
29 struct usb_request req;
30 struct usbhs_pkt pkt;
31};
32
33#define EP_NAME_SIZE 8
34struct usbhsg_gpriv;
35struct usbhsg_uep {
36 struct usb_ep ep;
37 struct usbhs_pipe *pipe;
38
39 char ep_name[EP_NAME_SIZE];
40
41 struct usbhsg_gpriv *gpriv;
42 struct usbhs_pkt_handle *handler;
43};
44
45struct usbhsg_gpriv {
46 struct usb_gadget gadget;
47 struct usbhs_mod mod;
48 struct list_head link;
49
50 struct usbhsg_uep *uep;
51 int uep_size;
52
53 struct usb_gadget_driver *driver;
54
55 u32 status;
56#define USBHSG_STATUS_STARTED (1 << 0)
57#define USBHSG_STATUS_REGISTERD (1 << 1)
58#define USBHSG_STATUS_WEDGE (1 << 2)
59};
60
61struct usbhsg_recip_handle {
62 char *name;
63 int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
64 struct usb_ctrlrequest *ctrl);
65 int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
66 struct usb_ctrlrequest *ctrl);
67 int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
68 struct usb_ctrlrequest *ctrl);
69};
70
71/*
72 * macro
73 */
74#define usbhsg_priv_to_gpriv(priv) \
75 container_of( \
76 usbhs_mod_get(priv, USBHS_GADGET), \
77 struct usbhsg_gpriv, mod)
78
79#define __usbhsg_for_each_uep(start, pos, g, i) \
80 for (i = start, pos = (g)->uep + i; \
81 i < (g)->uep_size; \
82 i++, pos = (g)->uep + i)
83
84#define usbhsg_for_each_uep(pos, gpriv, i) \
85 __usbhsg_for_each_uep(1, pos, gpriv, i)
86
87#define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \
88 __usbhsg_for_each_uep(0, pos, gpriv, i)
89
90#define usbhsg_gadget_to_gpriv(g)\
91 container_of(g, struct usbhsg_gpriv, gadget)
92
93#define usbhsg_req_to_ureq(r)\
94 container_of(r, struct usbhsg_request, req)
95
96#define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep)
97#define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv)
98#define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv)
99#define usbhsg_gpriv_to_dcp(gp) ((gp)->uep)
100#define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i)
101#define usbhsg_uep_to_gpriv(u) ((u)->gpriv)
102#define usbhsg_uep_to_pipe(u) ((u)->pipe)
103#define usbhsg_pipe_to_uep(p) ((p)->mod_private)
104#define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
105
106#define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
107#define usbhsg_pkt_to_ureq(i) \
108 container_of(i, struct usbhsg_request, pkt)
109
110#define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
111
112/* status */
113#define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0)
114#define usbhsg_status_set(gp, b) (gp->status |= b)
115#define usbhsg_status_clr(gp, b) (gp->status &= ~b)
116#define usbhsg_status_has(gp, b) (gp->status & b)
117
118/* controller */
119LIST_HEAD(the_controller_link);
120
121#define usbhsg_for_each_controller(gpriv)\
122 list_for_each_entry(gpriv, &the_controller_link, link)
123#define usbhsg_controller_register(gpriv)\
124 list_add_tail(&(gpriv)->link, &the_controller_link)
125#define usbhsg_controller_unregister(gpriv)\
126 list_del_init(&(gpriv)->link)
127
128/*
129 * queue push/pop
130 */
131static void usbhsg_queue_push(struct usbhsg_uep *uep,
132 struct usbhsg_request *ureq)
133{
134 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
135 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
136 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
137 struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
138 struct usb_request *req = &ureq->req;
139
140 req->actual = 0;
141 req->status = -EINPROGRESS;
142 usbhs_pkt_push(pipe, pkt, uep->handler,
143 req->buf, req->length, req->zero);
144
145 dev_dbg(dev, "pipe %d : queue push (%d)\n",
146 usbhs_pipe_number(pipe),
147 req->length);
148}
149
150static void usbhsg_queue_pop(struct usbhsg_uep *uep,
151 struct usbhsg_request *ureq,
152 int status)
153{
154 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
155 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
156 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
157
158 dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
159
160 ureq->req.status = status;
161 ureq->req.complete(&uep->ep, &ureq->req);
162}
163
164static void usbhsg_queue_done(struct usbhs_pkt *pkt)
165{
166 struct usbhs_pipe *pipe = pkt->pipe;
167 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
168 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
169
170 ureq->req.actual = pkt->actual;
171
172 usbhsg_queue_pop(uep, ureq, 0);
173}
174
175/*
176 * dma map/unmap
177 */
178static int usbhsg_dma_map(struct device *dev,
179 struct usbhs_pkt *pkt,
180 enum dma_data_direction dir)
181{
182 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
183 struct usb_request *req = &ureq->req;
184
185 if (pkt->dma != DMA_ADDR_INVALID) {
186 dev_err(dev, "dma is already mapped\n");
187 return -EIO;
188 }
189
190 if (req->dma == DMA_ADDR_INVALID) {
191 pkt->dma = dma_map_single(dev, pkt->buf, pkt->length, dir);
192 } else {
193 dma_sync_single_for_device(dev, req->dma, req->length, dir);
194 pkt->dma = req->dma;
195 }
196
197 if (dma_mapping_error(dev, pkt->dma)) {
198 dev_err(dev, "dma mapping error %x\n", pkt->dma);
199 return -EIO;
200 }
201
202 return 0;
203}
204
205static int usbhsg_dma_unmap(struct device *dev,
206 struct usbhs_pkt *pkt,
207 enum dma_data_direction dir)
208{
209 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
210 struct usb_request *req = &ureq->req;
211
212 if (pkt->dma == DMA_ADDR_INVALID) {
213 dev_err(dev, "dma is not mapped\n");
214 return -EIO;
215 }
216
217 if (req->dma == DMA_ADDR_INVALID)
218 dma_unmap_single(dev, pkt->dma, pkt->length, dir);
219 else
220 dma_sync_single_for_cpu(dev, req->dma, req->length, dir);
221
222 pkt->dma = DMA_ADDR_INVALID;
223
224 return 0;
225}
226
227static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
228{
229 struct usbhs_pipe *pipe = pkt->pipe;
230 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
231 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
232 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
233 enum dma_data_direction dir;
234
235 dir = usbhs_pipe_is_dir_in(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
236
237 if (map)
238 return usbhsg_dma_map(dev, pkt, dir);
239 else
240 return usbhsg_dma_unmap(dev, pkt, dir);
241}
242
243/*
244 * USB_TYPE_STANDARD / clear feature functions
245 */
246static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
247 struct usbhsg_uep *uep,
248 struct usb_ctrlrequest *ctrl)
249{
250 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
251 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
252 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
253
254 usbhs_dcp_control_transfer_done(pipe);
255
256 return 0;
257}
258
259static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
260 struct usbhsg_uep *uep,
261 struct usb_ctrlrequest *ctrl)
262{
263 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
264 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
265
266 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
267 usbhs_pipe_disable(pipe);
268 usbhs_pipe_clear_sequence(pipe);
269 usbhs_pipe_enable(pipe);
270 }
271
272 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
273
274 return 0;
275}
276
277struct usbhsg_recip_handle req_clear_feature = {
278 .name = "clear feature",
279 .device = usbhsg_recip_handler_std_control_done,
280 .interface = usbhsg_recip_handler_std_control_done,
281 .endpoint = usbhsg_recip_handler_std_clear_endpoint,
282};
283
284/*
285 * USB_TYPE handler
286 */
287static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
288 struct usbhsg_recip_handle *handler,
289 struct usb_ctrlrequest *ctrl)
290{
291 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
292 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
293 struct usbhsg_uep *uep;
294 struct usbhs_pipe *pipe;
295 int recip = ctrl->bRequestType & USB_RECIP_MASK;
296 int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
297 int ret;
298 int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
299 struct usb_ctrlrequest *ctrl);
300 char *msg;
301
302 uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
303 pipe = usbhsg_uep_to_pipe(uep);
304 if (!pipe) {
305 dev_err(dev, "wrong recip request\n");
306 ret = -EINVAL;
307 goto usbhsg_recip_run_handle_end;
308 }
309
310 switch (recip) {
311 case USB_RECIP_DEVICE:
312 msg = "DEVICE";
313 func = handler->device;
314 break;
315 case USB_RECIP_INTERFACE:
316 msg = "INTERFACE";
317 func = handler->interface;
318 break;
319 case USB_RECIP_ENDPOINT:
320 msg = "ENDPOINT";
321 func = handler->endpoint;
322 break;
323 default:
324 dev_warn(dev, "unsupported RECIP(%d)\n", recip);
325 func = NULL;
326 ret = -EINVAL;
327 }
328
329 if (func) {
330 unsigned long flags;
331
332 dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
333
334 /******************** spin lock ********************/
335 usbhs_lock(priv, flags);
336 ret = func(priv, uep, ctrl);
337 usbhs_unlock(priv, flags);
338 /******************** spin unlock ******************/
339 }
340
341usbhsg_recip_run_handle_end:
342 usbhs_pkt_start(pipe);
343
344 return ret;
345}
346
347/*
348 * irq functions
349 *
350 * it will be called from usbhs_interrupt
351 */
352static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
353 struct usbhs_irq_state *irq_state)
354{
355 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
356 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
357
358 gpriv->gadget.speed = usbhs_status_get_usb_speed(irq_state);
359
360 dev_dbg(dev, "state = %x : speed : %d\n",
361 usbhs_status_get_device_state(irq_state),
362 gpriv->gadget.speed);
363
364 return 0;
365}
366
367static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
368 struct usbhs_irq_state *irq_state)
369{
370 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
371 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
372 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
373 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
374 struct usb_ctrlrequest ctrl;
375 struct usbhsg_recip_handle *recip_handler = NULL;
376 int stage = usbhs_status_get_ctrl_stage(irq_state);
377 int ret = 0;
378
379 dev_dbg(dev, "stage = %d\n", stage);
380
381 /*
382 * see Manual
383 *
384 * "Operation"
385 * - "Interrupt Function"
386 * - "Control Transfer Stage Transition Interrupt"
387 * - Fig. "Control Transfer Stage Transitions"
388 */
389
390 switch (stage) {
391 case READ_DATA_STAGE:
392 dcp->handler = &usbhs_fifo_pio_push_handler;
393 break;
394 case WRITE_DATA_STAGE:
395 dcp->handler = &usbhs_fifo_pio_pop_handler;
396 break;
397 case NODATA_STATUS_STAGE:
398 dcp->handler = &usbhs_ctrl_stage_end_handler;
399 break;
400 default:
401 return ret;
402 }
403
404 /*
405 * get usb request
406 */
407 usbhs_usbreq_get_val(priv, &ctrl);
408
409 switch (ctrl.bRequestType & USB_TYPE_MASK) {
410 case USB_TYPE_STANDARD:
411 switch (ctrl.bRequest) {
412 case USB_REQ_CLEAR_FEATURE:
413 recip_handler = &req_clear_feature;
414 break;
415 }
416 }
417
418 /*
419 * setup stage / run recip
420 */
421 if (recip_handler)
422 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
423 else
424 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
425
426 if (ret < 0)
427 usbhs_pipe_stall(pipe);
428
429 return ret;
430}
431
432/*
433 *
434 * usb_dcp_ops
435 *
436 */
437static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
438{
439 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
440 struct usbhs_pkt *pkt;
441
442 usbhs_pipe_disable(pipe);
443
444 while (1) {
445 pkt = usbhs_pkt_pop(pipe, NULL);
446 if (!pkt)
447 break;
448 }
449
450 return 0;
451}
452
453static void usbhsg_uep_init(struct usbhsg_gpriv *gpriv)
454{
455 int i;
456 struct usbhsg_uep *uep;
457
458 usbhsg_for_each_uep_with_dcp(uep, gpriv, i)
459 uep->pipe = NULL;
460}
461
462/*
463 *
464 * usb_ep_ops
465 *
466 */
467static int usbhsg_ep_enable(struct usb_ep *ep,
468 const struct usb_endpoint_descriptor *desc)
469{
470 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
471 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
472 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
473 struct usbhs_pipe *pipe;
474 int ret = -EIO;
475
476 /*
477 * if it already have pipe,
478 * nothing to do
479 */
480 if (uep->pipe) {
481 usbhs_pipe_clear(uep->pipe);
482 usbhs_pipe_clear_sequence(uep->pipe);
483 return 0;
484 }
485
486 pipe = usbhs_pipe_malloc(priv, desc);
487 if (pipe) {
488 uep->pipe = pipe;
489 pipe->mod_private = uep;
490
491 /*
492 * usbhs_fifo_dma_push/pop_handler try to
493 * use dmaengine if possible.
494 * It will use pio handler if impossible.
495 */
496 if (usb_endpoint_dir_in(desc))
497 uep->handler = &usbhs_fifo_dma_push_handler;
498 else
499 uep->handler = &usbhs_fifo_dma_pop_handler;
500
501 ret = 0;
502 }
503
504 return ret;
505}
506
507static int usbhsg_ep_disable(struct usb_ep *ep)
508{
509 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
510
511 return usbhsg_pipe_disable(uep);
512}
513
514static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
515 gfp_t gfp_flags)
516{
517 struct usbhsg_request *ureq;
518
519 ureq = kzalloc(sizeof *ureq, gfp_flags);
520 if (!ureq)
521 return NULL;
522
523 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
524
525 ureq->req.dma = DMA_ADDR_INVALID;
526
527 return &ureq->req;
528}
529
530static void usbhsg_ep_free_request(struct usb_ep *ep,
531 struct usb_request *req)
532{
533 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
534
535 WARN_ON(!list_empty(&ureq->pkt.node));
536 kfree(ureq);
537}
538
539static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
540 gfp_t gfp_flags)
541{
542 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
543 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
544 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
545 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
546
547 /* param check */
548 if (usbhsg_is_not_connected(gpriv) ||
549 unlikely(!gpriv->driver) ||
550 unlikely(!pipe))
551 return -ESHUTDOWN;
552
553 usbhsg_queue_push(uep, ureq);
554
555 return 0;
556}
557
558static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
559{
560 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
561 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
562 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
563
564 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
565 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
566
567 return 0;
568}
569
570static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
571{
572 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
573 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
574 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
575 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
576 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
577 unsigned long flags;
578
579 usbhsg_pipe_disable(uep);
580
581 dev_dbg(dev, "set halt %d (pipe %d)\n",
582 halt, usbhs_pipe_number(pipe));
583
584 /******************** spin lock ********************/
585 usbhs_lock(priv, flags);
586
587 if (halt)
588 usbhs_pipe_stall(pipe);
589 else
590 usbhs_pipe_disable(pipe);
591
592 if (halt && wedge)
593 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
594 else
595 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
596
597 usbhs_unlock(priv, flags);
598 /******************** spin unlock ******************/
599
600 return 0;
601}
602
603static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
604{
605 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
606}
607
608static int usbhsg_ep_set_wedge(struct usb_ep *ep)
609{
610 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
611}
612
613static struct usb_ep_ops usbhsg_ep_ops = {
614 .enable = usbhsg_ep_enable,
615 .disable = usbhsg_ep_disable,
616
617 .alloc_request = usbhsg_ep_alloc_request,
618 .free_request = usbhsg_ep_free_request,
619
620 .queue = usbhsg_ep_queue,
621 .dequeue = usbhsg_ep_dequeue,
622
623 .set_halt = usbhsg_ep_set_halt,
624 .set_wedge = usbhsg_ep_set_wedge,
625};
626
627/*
628 * usb module start/end
629 */
630static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
631{
632 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
633 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
634 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
635 struct device *dev = usbhs_priv_to_dev(priv);
636 unsigned long flags;
637 int ret = 0;
638
639 /******************** spin lock ********************/
640 usbhs_lock(priv, flags);
641
642 usbhsg_status_set(gpriv, status);
643 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
644 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
645 ret = -1; /* not ready */
646
647 usbhs_unlock(priv, flags);
648 /******************** spin unlock ********************/
649
650 if (ret < 0)
651 return 0; /* not ready is not error */
652
653 /*
654 * enable interrupt and systems if ready
655 */
656 dev_dbg(dev, "start gadget\n");
657
658 /*
659 * pipe initialize and enable DCP
660 */
661 usbhs_pipe_init(priv,
662 usbhsg_queue_done,
663 usbhsg_dma_map_ctrl);
664 usbhs_fifo_init(priv);
665 usbhsg_uep_init(gpriv);
666
667 /* dcp init */
668 dcp->pipe = usbhs_dcp_malloc(priv);
669 dcp->pipe->mod_private = dcp;
670
671 /*
672 * system config enble
673 * - HI speed
674 * - function
675 * - usb module
676 */
677 usbhs_sys_hispeed_ctrl(priv, 1);
678 usbhs_sys_function_ctrl(priv, 1);
679 usbhs_sys_usb_ctrl(priv, 1);
680
681 /*
682 * enable irq callback
683 */
684 mod->irq_dev_state = usbhsg_irq_dev_state;
685 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
686 usbhs_irq_callback_update(priv, mod);
687
688 return 0;
689}
690
691static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
692{
693 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
694 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
695 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
696 struct device *dev = usbhs_priv_to_dev(priv);
697 unsigned long flags;
698 int ret = 0;
699
700 /******************** spin lock ********************/
701 usbhs_lock(priv, flags);
702
703 usbhsg_status_clr(gpriv, status);
704 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
705 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
706 ret = -1; /* already done */
707
708 usbhs_unlock(priv, flags);
709 /******************** spin unlock ********************/
710
711 if (ret < 0)
712 return 0; /* already done is not error */
713
714 /*
715 * disable interrupt and systems if 1st try
716 */
717 usbhs_fifo_quit(priv);
718
719 /* disable all irq */
720 mod->irq_dev_state = NULL;
721 mod->irq_ctrl_stage = NULL;
722 usbhs_irq_callback_update(priv, mod);
723
724 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
725
726 /* disable sys */
727 usbhs_sys_hispeed_ctrl(priv, 0);
728 usbhs_sys_function_ctrl(priv, 0);
729 usbhs_sys_usb_ctrl(priv, 0);
730
731 usbhsg_pipe_disable(dcp);
732
733 if (gpriv->driver &&
734 gpriv->driver->disconnect)
735 gpriv->driver->disconnect(&gpriv->gadget);
736
737 dev_dbg(dev, "stop gadget\n");
738
739 return 0;
740}
741
742/*
743 *
744 * linux usb function
745 *
746 */
747static int usbhsg_gadget_start(struct usb_gadget_driver *driver,
748 int (*bind)(struct usb_gadget *))
749{
750 struct usbhsg_gpriv *gpriv;
751 struct usbhs_priv *priv;
752 struct device *dev;
753 int ret;
754
755 if (!bind ||
756 !driver ||
757 !driver->setup ||
758 driver->speed != USB_SPEED_HIGH)
759 return -EINVAL;
760
761 /*
762 * find unused controller
763 */
764 usbhsg_for_each_controller(gpriv) {
765 if (!gpriv->driver)
766 goto find_unused_controller;
767 }
768 return -ENODEV;
769
770find_unused_controller:
771
772 dev = usbhsg_gpriv_to_dev(gpriv);
773 priv = usbhsg_gpriv_to_priv(gpriv);
774
775 /* first hook up the driver ... */
776 gpriv->driver = driver;
777 gpriv->gadget.dev.driver = &driver->driver;
778
779 ret = device_add(&gpriv->gadget.dev);
780 if (ret) {
781 dev_err(dev, "device_add error %d\n", ret);
782 goto add_fail;
783 }
784
785 ret = bind(&gpriv->gadget);
786 if (ret) {
787 dev_err(dev, "bind to driver %s error %d\n",
788 driver->driver.name, ret);
789 goto bind_fail;
790 }
791
792 dev_dbg(dev, "bind %s\n", driver->driver.name);
793
794 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
795
796bind_fail:
797 device_del(&gpriv->gadget.dev);
798add_fail:
799 gpriv->driver = NULL;
800 gpriv->gadget.dev.driver = NULL;
801
802 return ret;
803}
804
805static int usbhsg_gadget_stop(struct usb_gadget_driver *driver)
806{
807 struct usbhsg_gpriv *gpriv;
808 struct usbhs_priv *priv;
809 struct device *dev;
810
811 if (!driver ||
812 !driver->unbind)
813 return -EINVAL;
814
815 /*
816 * find controller
817 */
818 usbhsg_for_each_controller(gpriv) {
819 if (gpriv->driver == driver)
820 goto find_matching_controller;
821 }
822 return -ENODEV;
823
824find_matching_controller:
825
826 dev = usbhsg_gpriv_to_dev(gpriv);
827 priv = usbhsg_gpriv_to_priv(gpriv);
828
829 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
830 device_del(&gpriv->gadget.dev);
831 gpriv->driver = NULL;
832
833 if (driver->disconnect)
834 driver->disconnect(&gpriv->gadget);
835
836 driver->unbind(&gpriv->gadget);
837 dev_dbg(dev, "unbind %s\n", driver->driver.name);
838
839 return 0;
840}
841
842/*
843 * usb gadget ops
844 */
845static int usbhsg_get_frame(struct usb_gadget *gadget)
846{
847 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
848 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
849
850 return usbhs_frame_get_num(priv);
851}
852
853static struct usb_gadget_ops usbhsg_gadget_ops = {
854 .get_frame = usbhsg_get_frame,
855 .start = usbhsg_gadget_start,
856 .stop = usbhsg_gadget_stop,
857};
858
859static int usbhsg_start(struct usbhs_priv *priv)
860{
861 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
862}
863
864static int usbhsg_stop(struct usbhs_priv *priv)
865{
866 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
867}
868
869int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
870{
871 struct usbhsg_gpriv *gpriv;
872 struct usbhsg_uep *uep;
873 struct device *dev = usbhs_priv_to_dev(priv);
874 int pipe_size = usbhs_get_dparam(priv, pipe_size);
875 int i;
876 int ret;
877
878 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
879 if (!gpriv) {
880 dev_err(dev, "Could not allocate gadget priv\n");
881 return -ENOMEM;
882 }
883
884 uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
885 if (!uep) {
886 dev_err(dev, "Could not allocate ep\n");
887 ret = -ENOMEM;
888 goto usbhs_mod_gadget_probe_err_gpriv;
889 }
890
891 /*
892 * CAUTION
893 *
894 * There is no guarantee that it is possible to access usb module here.
895 * Don't accesses to it.
896 * The accesse will be enable after "usbhsg_start"
897 */
898
899 /*
900 * register itself
901 */
902 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
903
904 /* init gpriv */
905 gpriv->mod.name = "gadget";
906 gpriv->mod.start = usbhsg_start;
907 gpriv->mod.stop = usbhsg_stop;
908 gpriv->uep = uep;
909 gpriv->uep_size = pipe_size;
910 usbhsg_status_init(gpriv);
911
912 /*
913 * init gadget
914 */
915 device_initialize(&gpriv->gadget.dev);
916 dev_set_name(&gpriv->gadget.dev, "gadget");
917 gpriv->gadget.dev.parent = dev;
918 gpriv->gadget.name = "renesas_usbhs_udc";
919 gpriv->gadget.ops = &usbhsg_gadget_ops;
920 gpriv->gadget.is_dualspeed = 1;
921
922 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
923
924 /*
925 * init usb_ep
926 */
927 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
928 uep->gpriv = gpriv;
929 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
930
931 uep->ep.name = uep->ep_name;
932 uep->ep.ops = &usbhsg_ep_ops;
933 INIT_LIST_HEAD(&uep->ep.ep_list);
934
935 /* init DCP */
936 if (usbhsg_is_dcp(uep)) {
937 gpriv->gadget.ep0 = &uep->ep;
938 uep->ep.maxpacket = 64;
939 }
940 /* init normal pipe */
941 else {
942 uep->ep.maxpacket = 512;
943 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
944 }
945 }
946
947 usbhsg_controller_register(gpriv);
948
949 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
950 if (ret)
951 goto err_add_udc;
952
953
954 dev_info(dev, "gadget probed\n");
955
956 return 0;
957err_add_udc:
958 kfree(gpriv->uep);
959
960usbhs_mod_gadget_probe_err_gpriv:
961 kfree(gpriv);
962
963 return ret;
964}
965
966void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv)
967{
968 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
969
970 usb_del_gadget_udc(&gpriv->gadget);
971
972 usbhsg_controller_unregister(gpriv);
973
974 kfree(gpriv->uep);
975 kfree(gpriv);
976}
1// SPDX-License-Identifier: GPL-1.0+
2/*
3 * Renesas USB driver
4 *
5 * Copyright (C) 2011 Renesas Solutions Corp.
6 * Copyright (C) 2019 Renesas Electronics Corporation
7 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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 * struct
21 */
22struct usbhsg_request {
23 struct usb_request req;
24 struct usbhs_pkt pkt;
25};
26
27#define EP_NAME_SIZE 8
28struct usbhsg_gpriv;
29struct usbhsg_uep {
30 struct usb_ep ep;
31 struct usbhs_pipe *pipe;
32 spinlock_t lock; /* protect the pipe */
33
34 char ep_name[EP_NAME_SIZE];
35
36 struct usbhsg_gpriv *gpriv;
37};
38
39struct 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
58struct 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 * macro
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/* status */
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 * queue push/pop
117 */
118static 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
136static 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
149static 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
164static 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 * dma map/unmap
186 */
187static 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 /* it can not use scatter/gather */
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 * USB_TYPE_STANDARD / clear feature functions
216 */
217static 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
230static 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
250static 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 * USB_TYPE_STANDARD / set feature functions
259 */
260static 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
278static 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
291static 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 * USB_TYPE_STANDARD / get status functions
300 */
301static 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 /* free allocated recip-buffer/usb_request */
307 kfree(ureq->pkt.buf);
308 usb_ep_free_request(ep, req);
309}
310
311static 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 /* alloc new usb_request for recip */
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 /* alloc recip data buffer */
328 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
329 if (!buf) {
330 usb_ep_free_request(&dcp->ep, req);
331 return;
332 }
333
334 /* recip data is status */
335 *buf = cpu_to_le16(status);
336
337 /* allocated usb_request/buffer will be freed */
338 req->complete = __usbhsg_recip_send_complete;
339 req->buf = buf;
340 req->length = sizeof(*buf);
341 req->zero = 0;
342
343 /* push packet */
344 pipe->handler = &usbhs_fifo_pio_push_handler;
345 usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
346}
347
348static 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
363static 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
375static 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
391static 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 * USB_TYPE handler
400 */
401static 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 * irq functions
452 *
453 * it will be called from usbhs_interrupt
454 */
455static 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
461 gpriv->gadget.speed = usbhs_bus_get_speed(priv);
462
463 dev_dbg(dev, "state = %x : speed : %d\n",
464 usbhs_status_get_device_state(irq_state),
465 gpriv->gadget.speed);
466
467 return 0;
468}
469
470static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
471 struct usbhs_irq_state *irq_state)
472{
473 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
474 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
475 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
476 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
477 struct usb_ctrlrequest ctrl;
478 struct usbhsg_recip_handle *recip_handler = NULL;
479 int stage = usbhs_status_get_ctrl_stage(irq_state);
480 int ret = 0;
481
482 dev_dbg(dev, "stage = %d\n", stage);
483
484 /*
485 * see Manual
486 *
487 * "Operation"
488 * - "Interrupt Function"
489 * - "Control Transfer Stage Transition Interrupt"
490 * - Fig. "Control Transfer Stage Transitions"
491 */
492
493 switch (stage) {
494 case READ_DATA_STAGE:
495 pipe->handler = &usbhs_fifo_pio_push_handler;
496 break;
497 case WRITE_DATA_STAGE:
498 pipe->handler = &usbhs_fifo_pio_pop_handler;
499 break;
500 case NODATA_STATUS_STAGE:
501 pipe->handler = &usbhs_ctrl_stage_end_handler;
502 break;
503 case READ_STATUS_STAGE:
504 case WRITE_STATUS_STAGE:
505 usbhs_dcp_control_transfer_done(pipe);
506 /* fall through */
507 default:
508 return ret;
509 }
510
511 /*
512 * get usb request
513 */
514 usbhs_usbreq_get_val(priv, &ctrl);
515
516 switch (ctrl.bRequestType & USB_TYPE_MASK) {
517 case USB_TYPE_STANDARD:
518 switch (ctrl.bRequest) {
519 case USB_REQ_CLEAR_FEATURE:
520 recip_handler = &req_clear_feature;
521 break;
522 case USB_REQ_SET_FEATURE:
523 recip_handler = &req_set_feature;
524 break;
525 case USB_REQ_GET_STATUS:
526 recip_handler = &req_get_status;
527 break;
528 }
529 }
530
531 /*
532 * setup stage / run recip
533 */
534 if (recip_handler)
535 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
536 else
537 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
538
539 if (ret < 0)
540 usbhs_pipe_stall(pipe);
541
542 return ret;
543}
544
545/*
546 *
547 * usb_dcp_ops
548 *
549 */
550static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
551{
552 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
553 struct usbhs_pkt *pkt;
554
555 while (1) {
556 pkt = usbhs_pkt_pop(pipe, NULL);
557 if (!pkt)
558 break;
559
560 usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ESHUTDOWN);
561 }
562
563 usbhs_pipe_disable(pipe);
564
565 return 0;
566}
567
568/*
569 *
570 * usb_ep_ops
571 *
572 */
573static int usbhsg_ep_enable(struct usb_ep *ep,
574 const struct usb_endpoint_descriptor *desc)
575{
576 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
577 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
578 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
579 struct usbhs_pipe *pipe;
580 int ret = -EIO;
581 unsigned long flags;
582
583 usbhs_lock(priv, flags);
584
585 /*
586 * if it already have pipe,
587 * nothing to do
588 */
589 if (uep->pipe) {
590 usbhs_pipe_clear(uep->pipe);
591 usbhs_pipe_sequence_data0(uep->pipe);
592 ret = 0;
593 goto usbhsg_ep_enable_end;
594 }
595
596 pipe = usbhs_pipe_malloc(priv,
597 usb_endpoint_type(desc),
598 usb_endpoint_dir_in(desc));
599 if (pipe) {
600 uep->pipe = pipe;
601 pipe->mod_private = uep;
602
603 /* set epnum / maxp */
604 usbhs_pipe_config_update(pipe, 0,
605 usb_endpoint_num(desc),
606 usb_endpoint_maxp(desc));
607
608 /*
609 * usbhs_fifo_dma_push/pop_handler try to
610 * use dmaengine if possible.
611 * It will use pio handler if impossible.
612 */
613 if (usb_endpoint_dir_in(desc)) {
614 pipe->handler = &usbhs_fifo_dma_push_handler;
615 } else {
616 pipe->handler = &usbhs_fifo_dma_pop_handler;
617 usbhs_xxxsts_clear(priv, BRDYSTS,
618 usbhs_pipe_number(pipe));
619 }
620
621 ret = 0;
622 }
623
624usbhsg_ep_enable_end:
625 usbhs_unlock(priv, flags);
626
627 return ret;
628}
629
630static int usbhsg_ep_disable(struct usb_ep *ep)
631{
632 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
633 struct usbhs_pipe *pipe;
634 unsigned long flags;
635
636 spin_lock_irqsave(&uep->lock, flags);
637 pipe = usbhsg_uep_to_pipe(uep);
638 if (!pipe)
639 goto out;
640
641 usbhsg_pipe_disable(uep);
642 usbhs_pipe_free(pipe);
643
644 uep->pipe->mod_private = NULL;
645 uep->pipe = NULL;
646
647out:
648 spin_unlock_irqrestore(&uep->lock, flags);
649
650 return 0;
651}
652
653static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
654 gfp_t gfp_flags)
655{
656 struct usbhsg_request *ureq;
657
658 ureq = kzalloc(sizeof *ureq, gfp_flags);
659 if (!ureq)
660 return NULL;
661
662 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
663
664 return &ureq->req;
665}
666
667static void usbhsg_ep_free_request(struct usb_ep *ep,
668 struct usb_request *req)
669{
670 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
671
672 WARN_ON(!list_empty(&ureq->pkt.node));
673 kfree(ureq);
674}
675
676static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
677 gfp_t gfp_flags)
678{
679 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
680 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
681 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
682 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
683
684 /* param check */
685 if (usbhsg_is_not_connected(gpriv) ||
686 unlikely(!gpriv->driver) ||
687 unlikely(!pipe))
688 return -ESHUTDOWN;
689
690 usbhsg_queue_push(uep, ureq);
691
692 return 0;
693}
694
695static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
696{
697 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
698 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
699 struct usbhs_pipe *pipe;
700 unsigned long flags;
701
702 spin_lock_irqsave(&uep->lock, flags);
703 pipe = usbhsg_uep_to_pipe(uep);
704 if (pipe)
705 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
706
707 /*
708 * To dequeue a request, this driver should call the usbhsg_queue_pop()
709 * even if the pipe is NULL.
710 */
711 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
712 spin_unlock_irqrestore(&uep->lock, flags);
713
714 return 0;
715}
716
717static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
718{
719 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
720 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
721 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
722 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
723 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
724 unsigned long flags;
725 int ret = 0;
726
727 dev_dbg(dev, "set halt %d (pipe %d)\n",
728 halt, usbhs_pipe_number(pipe));
729
730 /******************** spin lock ********************/
731 usbhs_lock(priv, flags);
732
733 /*
734 * According to usb_ep_set_halt()'s description, this function should
735 * return -EAGAIN if the IN endpoint has any queue or data. Note
736 * that the usbhs_pipe_is_dir_in() returns false if the pipe is an
737 * IN endpoint in the gadget mode.
738 */
739 if (!usbhs_pipe_is_dir_in(pipe) && (__usbhsf_pkt_get(pipe) ||
740 usbhs_pipe_contains_transmittable_data(pipe))) {
741 ret = -EAGAIN;
742 goto out;
743 }
744
745 if (halt)
746 usbhs_pipe_stall(pipe);
747 else
748 usbhs_pipe_disable(pipe);
749
750 if (halt && wedge)
751 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
752 else
753 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
754
755out:
756 usbhs_unlock(priv, flags);
757 /******************** spin unlock ******************/
758
759 return ret;
760}
761
762static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
763{
764 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
765}
766
767static int usbhsg_ep_set_wedge(struct usb_ep *ep)
768{
769 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
770}
771
772static const struct usb_ep_ops usbhsg_ep_ops = {
773 .enable = usbhsg_ep_enable,
774 .disable = usbhsg_ep_disable,
775
776 .alloc_request = usbhsg_ep_alloc_request,
777 .free_request = usbhsg_ep_free_request,
778
779 .queue = usbhsg_ep_queue,
780 .dequeue = usbhsg_ep_dequeue,
781
782 .set_halt = usbhsg_ep_set_halt,
783 .set_wedge = usbhsg_ep_set_wedge,
784};
785
786/*
787 * pullup control
788 */
789static int usbhsg_can_pullup(struct usbhs_priv *priv)
790{
791 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
792
793 return gpriv->driver &&
794 usbhsg_status_has(gpriv, USBHSG_STATUS_SOFT_CONNECT);
795}
796
797static void usbhsg_update_pullup(struct usbhs_priv *priv)
798{
799 if (usbhsg_can_pullup(priv))
800 usbhs_sys_function_pullup(priv, 1);
801 else
802 usbhs_sys_function_pullup(priv, 0);
803}
804
805/*
806 * usb module start/end
807 */
808static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
809{
810 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
811 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
812 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
813 struct device *dev = usbhs_priv_to_dev(priv);
814 unsigned long flags;
815 int ret = 0;
816
817 /******************** spin lock ********************/
818 usbhs_lock(priv, flags);
819
820 usbhsg_status_set(gpriv, status);
821 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
822 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
823 ret = -1; /* not ready */
824
825 usbhs_unlock(priv, flags);
826 /******************** spin unlock ********************/
827
828 if (ret < 0)
829 return 0; /* not ready is not error */
830
831 /*
832 * enable interrupt and systems if ready
833 */
834 dev_dbg(dev, "start gadget\n");
835
836 /*
837 * pipe initialize and enable DCP
838 */
839 usbhs_fifo_init(priv);
840 usbhs_pipe_init(priv,
841 usbhsg_dma_map_ctrl);
842
843 /* dcp init instead of usbhsg_ep_enable() */
844 dcp->pipe = usbhs_dcp_malloc(priv);
845 dcp->pipe->mod_private = dcp;
846 usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
847
848 /*
849 * system config enble
850 * - HI speed
851 * - function
852 * - usb module
853 */
854 usbhs_sys_function_ctrl(priv, 1);
855 usbhsg_update_pullup(priv);
856
857 /*
858 * enable irq callback
859 */
860 mod->irq_dev_state = usbhsg_irq_dev_state;
861 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
862 usbhs_irq_callback_update(priv, mod);
863
864 return 0;
865}
866
867static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
868{
869 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
870 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
871 struct usbhsg_uep *uep;
872 struct device *dev = usbhs_priv_to_dev(priv);
873 unsigned long flags;
874 int ret = 0, i;
875
876 /******************** spin lock ********************/
877 usbhs_lock(priv, flags);
878
879 usbhsg_status_clr(gpriv, status);
880 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
881 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
882 ret = -1; /* already done */
883
884 usbhs_unlock(priv, flags);
885 /******************** spin unlock ********************/
886
887 if (ret < 0)
888 return 0; /* already done is not error */
889
890 /*
891 * disable interrupt and systems if 1st try
892 */
893 usbhs_fifo_quit(priv);
894
895 /* disable all irq */
896 mod->irq_dev_state = NULL;
897 mod->irq_ctrl_stage = NULL;
898 usbhs_irq_callback_update(priv, mod);
899
900 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
901
902 /* disable sys */
903 usbhs_sys_set_test_mode(priv, 0);
904 usbhs_sys_function_ctrl(priv, 0);
905
906 /* disable all eps */
907 usbhsg_for_each_uep_with_dcp(uep, gpriv, i)
908 usbhsg_ep_disable(&uep->ep);
909
910 dev_dbg(dev, "stop gadget\n");
911
912 return 0;
913}
914
915/*
916 * VBUS provided by the PHY
917 */
918static int usbhsm_phy_get_vbus(struct platform_device *pdev)
919{
920 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
921 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
922
923 return gpriv->vbus_active;
924}
925
926static void usbhs_mod_phy_mode(struct usbhs_priv *priv)
927{
928 struct usbhs_mod_info *info = &priv->mod_info;
929
930 info->irq_vbus = NULL;
931 info->get_vbus = usbhsm_phy_get_vbus;
932
933 usbhs_irq_callback_update(priv, NULL);
934}
935
936/*
937 *
938 * linux usb function
939 *
940 */
941static int usbhsg_gadget_start(struct usb_gadget *gadget,
942 struct usb_gadget_driver *driver)
943{
944 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
945 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
946 struct device *dev = usbhs_priv_to_dev(priv);
947 int ret;
948
949 if (!driver ||
950 !driver->setup ||
951 driver->max_speed < USB_SPEED_FULL)
952 return -EINVAL;
953
954 /* connect to bus through transceiver */
955 if (!IS_ERR_OR_NULL(gpriv->transceiver)) {
956 ret = otg_set_peripheral(gpriv->transceiver->otg,
957 &gpriv->gadget);
958 if (ret) {
959 dev_err(dev, "%s: can't bind to transceiver\n",
960 gpriv->gadget.name);
961 return ret;
962 }
963
964 /* get vbus using phy versions */
965 usbhs_mod_phy_mode(priv);
966 }
967
968 /* first hook up the driver ... */
969 gpriv->driver = driver;
970
971 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
972}
973
974static int usbhsg_gadget_stop(struct usb_gadget *gadget)
975{
976 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
977 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
978
979 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
980
981 if (!IS_ERR_OR_NULL(gpriv->transceiver))
982 otg_set_peripheral(gpriv->transceiver->otg, NULL);
983
984 gpriv->driver = NULL;
985
986 return 0;
987}
988
989/*
990 * usb gadget ops
991 */
992static int usbhsg_get_frame(struct usb_gadget *gadget)
993{
994 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
995 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
996
997 return usbhs_frame_get_num(priv);
998}
999
1000static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
1001{
1002 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1003 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1004 unsigned long flags;
1005
1006 usbhs_lock(priv, flags);
1007 if (is_on)
1008 usbhsg_status_set(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1009 else
1010 usbhsg_status_clr(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1011 usbhsg_update_pullup(priv);
1012 usbhs_unlock(priv, flags);
1013
1014 return 0;
1015}
1016
1017static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
1018{
1019 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1020
1021 if (is_self)
1022 usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
1023 else
1024 usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
1025
1026 gadget->is_selfpowered = (is_self != 0);
1027
1028 return 0;
1029}
1030
1031static int usbhsg_vbus_session(struct usb_gadget *gadget, int is_active)
1032{
1033 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1034 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1035 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
1036
1037 gpriv->vbus_active = !!is_active;
1038
1039 usbhsc_schedule_notify_hotplug(pdev);
1040
1041 return 0;
1042}
1043
1044static const struct usb_gadget_ops usbhsg_gadget_ops = {
1045 .get_frame = usbhsg_get_frame,
1046 .set_selfpowered = usbhsg_set_selfpowered,
1047 .udc_start = usbhsg_gadget_start,
1048 .udc_stop = usbhsg_gadget_stop,
1049 .pullup = usbhsg_pullup,
1050 .vbus_session = usbhsg_vbus_session,
1051};
1052
1053static int usbhsg_start(struct usbhs_priv *priv)
1054{
1055 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
1056}
1057
1058static int usbhsg_stop(struct usbhs_priv *priv)
1059{
1060 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1061
1062 /* cable disconnect */
1063 if (gpriv->driver &&
1064 gpriv->driver->disconnect)
1065 gpriv->driver->disconnect(&gpriv->gadget);
1066
1067 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
1068}
1069
1070int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
1071{
1072 struct usbhsg_gpriv *gpriv;
1073 struct usbhsg_uep *uep;
1074 struct device *dev = usbhs_priv_to_dev(priv);
1075 struct renesas_usbhs_driver_pipe_config *pipe_configs =
1076 usbhs_get_dparam(priv, pipe_configs);
1077 int pipe_size = usbhs_get_dparam(priv, pipe_size);
1078 int i;
1079 int ret;
1080
1081 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
1082 if (!gpriv)
1083 return -ENOMEM;
1084
1085 uep = kcalloc(pipe_size, sizeof(struct usbhsg_uep), GFP_KERNEL);
1086 if (!uep) {
1087 ret = -ENOMEM;
1088 goto usbhs_mod_gadget_probe_err_gpriv;
1089 }
1090
1091 gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED);
1092 dev_info(dev, "%stransceiver found\n",
1093 !IS_ERR(gpriv->transceiver) ? "" : "no ");
1094
1095 /*
1096 * CAUTION
1097 *
1098 * There is no guarantee that it is possible to access usb module here.
1099 * Don't accesses to it.
1100 * The accesse will be enable after "usbhsg_start"
1101 */
1102
1103 /*
1104 * register itself
1105 */
1106 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
1107
1108 /* init gpriv */
1109 gpriv->mod.name = "gadget";
1110 gpriv->mod.start = usbhsg_start;
1111 gpriv->mod.stop = usbhsg_stop;
1112 gpriv->uep = uep;
1113 gpriv->uep_size = pipe_size;
1114 usbhsg_status_init(gpriv);
1115
1116 /*
1117 * init gadget
1118 */
1119 gpriv->gadget.dev.parent = dev;
1120 gpriv->gadget.name = "renesas_usbhs_udc";
1121 gpriv->gadget.ops = &usbhsg_gadget_ops;
1122 gpriv->gadget.max_speed = USB_SPEED_HIGH;
1123 gpriv->gadget.quirk_avoids_skb_reserve = usbhs_get_dparam(priv,
1124 has_usb_dmac);
1125
1126 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
1127
1128 /*
1129 * init usb_ep
1130 */
1131 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
1132 uep->gpriv = gpriv;
1133 uep->pipe = NULL;
1134 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
1135
1136 uep->ep.name = uep->ep_name;
1137 uep->ep.ops = &usbhsg_ep_ops;
1138 INIT_LIST_HEAD(&uep->ep.ep_list);
1139 spin_lock_init(&uep->lock);
1140
1141 /* init DCP */
1142 if (usbhsg_is_dcp(uep)) {
1143 gpriv->gadget.ep0 = &uep->ep;
1144 usb_ep_set_maxpacket_limit(&uep->ep, 64);
1145 uep->ep.caps.type_control = true;
1146 } else {
1147 /* init normal pipe */
1148 if (pipe_configs[i].type == USB_ENDPOINT_XFER_ISOC)
1149 uep->ep.caps.type_iso = true;
1150 if (pipe_configs[i].type == USB_ENDPOINT_XFER_BULK)
1151 uep->ep.caps.type_bulk = true;
1152 if (pipe_configs[i].type == USB_ENDPOINT_XFER_INT)
1153 uep->ep.caps.type_int = true;
1154 usb_ep_set_maxpacket_limit(&uep->ep,
1155 pipe_configs[i].bufsize);
1156 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
1157 }
1158 uep->ep.caps.dir_in = true;
1159 uep->ep.caps.dir_out = true;
1160 }
1161
1162 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
1163 if (ret)
1164 goto err_add_udc;
1165
1166
1167 dev_info(dev, "gadget probed\n");
1168
1169 return 0;
1170
1171err_add_udc:
1172 kfree(gpriv->uep);
1173
1174usbhs_mod_gadget_probe_err_gpriv:
1175 kfree(gpriv);
1176
1177 return ret;
1178}
1179
1180void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
1181{
1182 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1183
1184 usb_del_gadget_udc(&gpriv->gadget);
1185
1186 kfree(gpriv->uep);
1187 kfree(gpriv);
1188}