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