4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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.
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
17 #include <linux/delay.h>
18 #include <linux/dma-mapping.h>
20 #include <linux/module.h>
21 #include <linux/platform_device.h>
22 #include <linux/usb/ch9.h>
23 #include <linux/usb/gadget.h>
24 #include <linux/usb/otg.h>
30 struct usbhsg_request {
31 struct usb_request req;
35 #define EP_NAME_SIZE 8
39 struct usbhs_pipe *pipe;
40 spinlock_t lock; /* protect the pipe */
42 char ep_name[EP_NAME_SIZE];
44 struct usbhsg_gpriv *gpriv;
48 struct usb_gadget gadget;
51 struct usbhsg_uep *uep;
54 struct usb_gadget_driver *driver;
55 struct usb_phy *transceiver;
59 #define USBHSG_STATUS_STARTED (1 << 0)
60 #define USBHSG_STATUS_REGISTERD (1 << 1)
61 #define USBHSG_STATUS_WEDGE (1 << 2)
62 #define USBHSG_STATUS_SELF_POWERED (1 << 3)
63 #define USBHSG_STATUS_SOFT_CONNECT (1 << 4)
66 struct usbhsg_recip_handle {
68 int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
69 struct usb_ctrlrequest *ctrl);
70 int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
71 struct usb_ctrlrequest *ctrl);
72 int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
73 struct usb_ctrlrequest *ctrl);
79 #define usbhsg_priv_to_gpriv(priv) \
81 usbhs_mod_get(priv, USBHS_GADGET), \
82 struct usbhsg_gpriv, mod)
84 #define __usbhsg_for_each_uep(start, pos, g, i) \
86 ((i) < (g)->uep_size) && ((pos) = (g)->uep + (i)); \
89 #define usbhsg_for_each_uep(pos, gpriv, i) \
90 __usbhsg_for_each_uep(1, pos, gpriv, i)
92 #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \
93 __usbhsg_for_each_uep(0, pos, gpriv, i)
95 #define usbhsg_gadget_to_gpriv(g)\
96 container_of(g, struct usbhsg_gpriv, gadget)
98 #define usbhsg_req_to_ureq(r)\
99 container_of(r, struct usbhsg_request, req)
101 #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep)
102 #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv)
103 #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv)
104 #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep)
105 #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i)
106 #define usbhsg_uep_to_gpriv(u) ((u)->gpriv)
107 #define usbhsg_uep_to_pipe(u) ((u)->pipe)
108 #define usbhsg_pipe_to_uep(p) ((p)->mod_private)
109 #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
111 #define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
112 #define usbhsg_pkt_to_ureq(i) \
113 container_of(i, struct usbhsg_request, pkt)
115 #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
118 #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0)
119 #define usbhsg_status_set(gp, b) (gp->status |= b)
120 #define usbhsg_status_clr(gp, b) (gp->status &= ~b)
121 #define usbhsg_status_has(gp, b) (gp->status & b)
126 static void __usbhsg_queue_pop(struct usbhsg_uep *uep,
127 struct usbhsg_request *ureq,
130 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
131 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
132 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
133 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
136 dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
138 ureq->req.status = status;
139 spin_unlock(usbhs_priv_to_lock(priv));
140 usb_gadget_giveback_request(&uep->ep, &ureq->req);
141 spin_lock(usbhs_priv_to_lock(priv));
144 static void usbhsg_queue_pop(struct usbhsg_uep *uep,
145 struct usbhsg_request *ureq,
148 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
149 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
152 usbhs_lock(priv, flags);
153 __usbhsg_queue_pop(uep, ureq, status);
154 usbhs_unlock(priv, flags);
157 static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
159 struct usbhs_pipe *pipe = pkt->pipe;
160 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
161 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
164 ureq->req.actual = pkt->actual;
166 usbhs_lock(priv, flags);
168 __usbhsg_queue_pop(uep, ureq, 0);
169 usbhs_unlock(priv, flags);
172 static void usbhsg_queue_push(struct usbhsg_uep *uep,
173 struct usbhsg_request *ureq)
175 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
176 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
177 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
178 struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
179 struct usb_request *req = &ureq->req;
182 req->status = -EINPROGRESS;
183 usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
184 req->buf, req->length, req->zero, -1);
185 usbhs_pkt_start(pipe);
187 dev_dbg(dev, "pipe %d : queue push (%d)\n",
188 usbhs_pipe_number(pipe),
195 static int usbhsg_dma_map_ctrl(struct device *dma_dev, struct usbhs_pkt *pkt,
198 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
199 struct usb_request *req = &ureq->req;
200 struct usbhs_pipe *pipe = pkt->pipe;
201 enum dma_data_direction dir;
204 dir = usbhs_pipe_is_dir_host(pipe);
207 /* it can not use scatter/gather */
208 WARN_ON(req->num_sgs);
210 ret = usb_gadget_map_request_by_dev(dma_dev, req, dir);
216 usb_gadget_unmap_request_by_dev(dma_dev, req, dir);
223 * USB_TYPE_STANDARD / clear feature functions
225 static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
226 struct usbhsg_uep *uep,
227 struct usb_ctrlrequest *ctrl)
229 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
230 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
231 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
233 usbhs_dcp_control_transfer_done(pipe);
238 static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
239 struct usbhsg_uep *uep,
240 struct usb_ctrlrequest *ctrl)
242 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
243 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
245 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
246 usbhs_pipe_disable(pipe);
247 usbhs_pipe_sequence_data0(pipe);
248 usbhs_pipe_enable(pipe);
251 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
253 usbhs_pkt_start(pipe);
258 static struct usbhsg_recip_handle req_clear_feature = {
259 .name = "clear feature",
260 .device = usbhsg_recip_handler_std_control_done,
261 .interface = usbhsg_recip_handler_std_control_done,
262 .endpoint = usbhsg_recip_handler_std_clear_endpoint,
266 * USB_TYPE_STANDARD / set feature functions
268 static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv,
269 struct usbhsg_uep *uep,
270 struct usb_ctrlrequest *ctrl)
272 switch (le16_to_cpu(ctrl->wValue)) {
273 case USB_DEVICE_TEST_MODE:
274 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
276 usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex >> 8));
279 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
286 static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv,
287 struct usbhsg_uep *uep,
288 struct usb_ctrlrequest *ctrl)
290 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
292 usbhs_pipe_stall(pipe);
294 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
299 static struct usbhsg_recip_handle req_set_feature = {
300 .name = "set feature",
301 .device = usbhsg_recip_handler_std_set_device,
302 .interface = usbhsg_recip_handler_std_control_done,
303 .endpoint = usbhsg_recip_handler_std_set_endpoint,
307 * USB_TYPE_STANDARD / get status functions
309 static void __usbhsg_recip_send_complete(struct usb_ep *ep,
310 struct usb_request *req)
312 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
314 /* free allocated recip-buffer/usb_request */
315 kfree(ureq->pkt.buf);
316 usb_ep_free_request(ep, req);
319 static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv,
320 unsigned short status)
322 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
323 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
324 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
325 struct usb_request *req;
328 /* alloc new usb_request for recip */
329 req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC);
331 dev_err(dev, "recip request allocation fail\n");
335 /* alloc recip data buffer */
336 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
338 usb_ep_free_request(&dcp->ep, req);
342 /* recip data is status */
343 *buf = cpu_to_le16(status);
345 /* allocated usb_request/buffer will be freed */
346 req->complete = __usbhsg_recip_send_complete;
348 req->length = sizeof(*buf);
352 pipe->handler = &usbhs_fifo_pio_push_handler;
353 usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
356 static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv,
357 struct usbhsg_uep *uep,
358 struct usb_ctrlrequest *ctrl)
360 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
361 unsigned short status = 0;
363 if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED))
364 status = 1 << USB_DEVICE_SELF_POWERED;
366 __usbhsg_recip_send_status(gpriv, status);
371 static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv,
372 struct usbhsg_uep *uep,
373 struct usb_ctrlrequest *ctrl)
375 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
376 unsigned short status = 0;
378 __usbhsg_recip_send_status(gpriv, status);
383 static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv,
384 struct usbhsg_uep *uep,
385 struct usb_ctrlrequest *ctrl)
387 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
388 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
389 unsigned short status = 0;
391 if (usbhs_pipe_is_stall(pipe))
392 status = 1 << USB_ENDPOINT_HALT;
394 __usbhsg_recip_send_status(gpriv, status);
399 static struct usbhsg_recip_handle req_get_status = {
400 .name = "get status",
401 .device = usbhsg_recip_handler_std_get_device,
402 .interface = usbhsg_recip_handler_std_get_interface,
403 .endpoint = usbhsg_recip_handler_std_get_endpoint,
409 static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
410 struct usbhsg_recip_handle *handler,
411 struct usb_ctrlrequest *ctrl)
413 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
414 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
415 struct usbhsg_uep *uep;
416 struct usbhs_pipe *pipe;
417 int recip = ctrl->bRequestType & USB_RECIP_MASK;
418 int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
420 int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
421 struct usb_ctrlrequest *ctrl);
424 uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
425 pipe = usbhsg_uep_to_pipe(uep);
427 dev_err(dev, "wrong recip request\n");
432 case USB_RECIP_DEVICE:
434 func = handler->device;
436 case USB_RECIP_INTERFACE:
438 func = handler->interface;
440 case USB_RECIP_ENDPOINT:
442 func = handler->endpoint;
445 dev_warn(dev, "unsupported RECIP(%d)\n", recip);
451 dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
452 ret = func(priv, uep, ctrl);
461 * it will be called from usbhs_interrupt
463 static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
464 struct usbhs_irq_state *irq_state)
466 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
467 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
468 int state = usbhs_status_get_device_state(irq_state);
470 gpriv->gadget.speed = usbhs_bus_get_speed(priv);
472 dev_dbg(dev, "state = %x : speed : %d\n", state, gpriv->gadget.speed);
474 if (gpriv->gadget.speed != USB_SPEED_UNKNOWN &&
475 (state & SUSPENDED_STATE)) {
476 if (gpriv->driver && gpriv->driver->suspend)
477 gpriv->driver->suspend(&gpriv->gadget);
478 usb_gadget_set_state(&gpriv->gadget, USB_STATE_SUSPENDED);
484 static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
485 struct usbhs_irq_state *irq_state)
487 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
488 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
489 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
490 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
491 struct usb_ctrlrequest ctrl;
492 struct usbhsg_recip_handle *recip_handler = NULL;
493 int stage = usbhs_status_get_ctrl_stage(irq_state);
496 dev_dbg(dev, "stage = %d\n", stage);
502 * - "Interrupt Function"
503 * - "Control Transfer Stage Transition Interrupt"
504 * - Fig. "Control Transfer Stage Transitions"
508 case READ_DATA_STAGE:
509 pipe->handler = &usbhs_fifo_pio_push_handler;
511 case WRITE_DATA_STAGE:
512 pipe->handler = &usbhs_fifo_pio_pop_handler;
514 case NODATA_STATUS_STAGE:
515 pipe->handler = &usbhs_ctrl_stage_end_handler;
517 case READ_STATUS_STAGE:
518 case WRITE_STATUS_STAGE:
519 usbhs_dcp_control_transfer_done(pipe);
527 usbhs_usbreq_get_val(priv, &ctrl);
529 switch (ctrl.bRequestType & USB_TYPE_MASK) {
530 case USB_TYPE_STANDARD:
531 switch (ctrl.bRequest) {
532 case USB_REQ_CLEAR_FEATURE:
533 recip_handler = &req_clear_feature;
535 case USB_REQ_SET_FEATURE:
536 recip_handler = &req_set_feature;
538 case USB_REQ_GET_STATUS:
539 recip_handler = &req_get_status;
545 * setup stage / run recip
548 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
550 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
553 usbhs_pipe_stall(pipe);
563 static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
565 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
566 struct usbhs_pkt *pkt;
569 pkt = usbhs_pkt_pop(pipe, NULL);
573 usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ESHUTDOWN);
576 usbhs_pipe_disable(pipe);
586 static int usbhsg_ep_enable(struct usb_ep *ep,
587 const struct usb_endpoint_descriptor *desc)
589 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
590 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
591 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
592 struct usbhs_pipe *pipe;
596 usbhs_lock(priv, flags);
599 * if it already have pipe,
603 usbhs_pipe_clear(uep->pipe);
604 usbhs_pipe_sequence_data0(uep->pipe);
606 goto usbhsg_ep_enable_end;
609 pipe = usbhs_pipe_malloc(priv,
610 usb_endpoint_type(desc),
611 usb_endpoint_dir_in(desc));
614 pipe->mod_private = uep;
616 /* set epnum / maxp */
617 usbhs_pipe_config_update(pipe, 0,
618 usb_endpoint_num(desc),
619 usb_endpoint_maxp(desc));
622 * usbhs_fifo_dma_push/pop_handler try to
623 * use dmaengine if possible.
624 * It will use pio handler if impossible.
626 if (usb_endpoint_dir_in(desc)) {
627 pipe->handler = &usbhs_fifo_dma_push_handler;
629 pipe->handler = &usbhs_fifo_dma_pop_handler;
630 usbhs_xxxsts_clear(priv, BRDYSTS,
631 usbhs_pipe_number(pipe));
637 usbhsg_ep_enable_end:
638 usbhs_unlock(priv, flags);
643 static int usbhsg_ep_disable(struct usb_ep *ep)
645 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
646 struct usbhs_pipe *pipe;
649 spin_lock_irqsave(&uep->lock, flags);
650 pipe = usbhsg_uep_to_pipe(uep);
654 usbhsg_pipe_disable(uep);
655 usbhs_pipe_free(pipe);
657 uep->pipe->mod_private = NULL;
661 spin_unlock_irqrestore(&uep->lock, flags);
666 static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
669 struct usbhsg_request *ureq;
671 ureq = kzalloc(sizeof *ureq, gfp_flags);
675 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
680 static void usbhsg_ep_free_request(struct usb_ep *ep,
681 struct usb_request *req)
683 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
685 WARN_ON(!list_empty(&ureq->pkt.node));
689 static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
692 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
693 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
694 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
695 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
698 if (usbhsg_is_not_connected(gpriv) ||
699 unlikely(!gpriv->driver) ||
703 usbhsg_queue_push(uep, ureq);
708 static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
710 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
711 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
712 struct usbhs_pipe *pipe;
715 spin_lock_irqsave(&uep->lock, flags);
716 pipe = usbhsg_uep_to_pipe(uep);
718 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
721 * To dequeue a request, this driver should call the usbhsg_queue_pop()
722 * even if the pipe is NULL.
724 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
725 spin_unlock_irqrestore(&uep->lock, flags);
730 static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
732 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
733 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
734 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
735 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
736 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
740 dev_dbg(dev, "set halt %d (pipe %d)\n",
741 halt, usbhs_pipe_number(pipe));
743 /******************** spin lock ********************/
744 usbhs_lock(priv, flags);
747 * According to usb_ep_set_halt()'s description, this function should
748 * return -EAGAIN if the IN endpoint has any queue or data. Note
749 * that the usbhs_pipe_is_dir_in() returns false if the pipe is an
750 * IN endpoint in the gadget mode.
752 if (!usbhs_pipe_is_dir_in(pipe) && (__usbhsf_pkt_get(pipe) ||
753 usbhs_pipe_contains_transmittable_data(pipe))) {
759 usbhs_pipe_stall(pipe);
761 usbhs_pipe_disable(pipe);
764 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
766 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
769 usbhs_unlock(priv, flags);
770 /******************** spin unlock ******************/
775 static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
777 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
780 static int usbhsg_ep_set_wedge(struct usb_ep *ep)
782 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
785 static struct usb_ep_ops usbhsg_ep_ops = {
786 .enable = usbhsg_ep_enable,
787 .disable = usbhsg_ep_disable,
789 .alloc_request = usbhsg_ep_alloc_request,
790 .free_request = usbhsg_ep_free_request,
792 .queue = usbhsg_ep_queue,
793 .dequeue = usbhsg_ep_dequeue,
795 .set_halt = usbhsg_ep_set_halt,
796 .set_wedge = usbhsg_ep_set_wedge,
802 static int usbhsg_can_pullup(struct usbhs_priv *priv)
804 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
806 return gpriv->driver &&
807 usbhsg_status_has(gpriv, USBHSG_STATUS_SOFT_CONNECT);
810 static void usbhsg_update_pullup(struct usbhs_priv *priv)
812 if (usbhsg_can_pullup(priv))
813 usbhs_sys_function_pullup(priv, 1);
815 usbhs_sys_function_pullup(priv, 0);
819 * usb module start/end
821 static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
823 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
824 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
825 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
826 struct device *dev = usbhs_priv_to_dev(priv);
830 /******************** spin lock ********************/
831 usbhs_lock(priv, flags);
833 usbhsg_status_set(gpriv, status);
834 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
835 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
836 ret = -1; /* not ready */
838 usbhs_unlock(priv, flags);
839 /******************** spin unlock ********************/
842 return 0; /* not ready is not error */
845 * enable interrupt and systems if ready
847 dev_dbg(dev, "start gadget\n");
850 * pipe initialize and enable DCP
852 usbhs_fifo_init(priv);
853 usbhs_pipe_init(priv,
854 usbhsg_dma_map_ctrl);
856 /* dcp init instead of usbhsg_ep_enable() */
857 dcp->pipe = usbhs_dcp_malloc(priv);
858 dcp->pipe->mod_private = dcp;
859 usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
862 * system config enble
867 usbhs_sys_function_ctrl(priv, 1);
868 usbhsg_update_pullup(priv);
871 * enable irq callback
873 mod->irq_dev_state = usbhsg_irq_dev_state;
874 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
875 usbhs_irq_callback_update(priv, mod);
880 static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
882 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
883 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
884 struct usbhsg_uep *uep;
885 struct device *dev = usbhs_priv_to_dev(priv);
889 /******************** spin lock ********************/
890 usbhs_lock(priv, flags);
892 usbhsg_status_clr(gpriv, status);
893 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
894 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
895 ret = -1; /* already done */
897 usbhs_unlock(priv, flags);
898 /******************** spin unlock ********************/
901 return 0; /* already done is not error */
904 * disable interrupt and systems if 1st try
906 usbhs_fifo_quit(priv);
908 /* disable all irq */
909 mod->irq_dev_state = NULL;
910 mod->irq_ctrl_stage = NULL;
911 usbhs_irq_callback_update(priv, mod);
913 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
916 usbhs_sys_set_test_mode(priv, 0);
917 usbhs_sys_function_ctrl(priv, 0);
919 /* disable all eps */
920 usbhsg_for_each_uep_with_dcp(uep, gpriv, i)
921 usbhsg_ep_disable(&uep->ep);
923 dev_dbg(dev, "stop gadget\n");
929 * VBUS provided by the PHY
931 static int usbhsm_phy_get_vbus(struct platform_device *pdev)
933 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
934 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
936 return gpriv->vbus_active;
939 static void usbhs_mod_phy_mode(struct usbhs_priv *priv)
941 struct usbhs_mod_info *info = &priv->mod_info;
943 info->irq_vbus = NULL;
944 priv->pfunc.get_vbus = usbhsm_phy_get_vbus;
946 usbhs_irq_callback_update(priv, NULL);
954 static int usbhsg_gadget_start(struct usb_gadget *gadget,
955 struct usb_gadget_driver *driver)
957 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
958 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
959 struct device *dev = usbhs_priv_to_dev(priv);
964 driver->max_speed < USB_SPEED_FULL)
967 /* connect to bus through transceiver */
968 if (!IS_ERR_OR_NULL(gpriv->transceiver)) {
969 ret = otg_set_peripheral(gpriv->transceiver->otg,
972 dev_err(dev, "%s: can't bind to transceiver\n",
977 /* get vbus using phy versions */
978 usbhs_mod_phy_mode(priv);
981 /* first hook up the driver ... */
982 gpriv->driver = driver;
984 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
987 static int usbhsg_gadget_stop(struct usb_gadget *gadget)
989 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
990 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
992 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
994 if (!IS_ERR_OR_NULL(gpriv->transceiver))
995 otg_set_peripheral(gpriv->transceiver->otg, NULL);
997 gpriv->driver = NULL;
1005 static int usbhsg_get_frame(struct usb_gadget *gadget)
1007 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1008 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1010 return usbhs_frame_get_num(priv);
1013 static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
1015 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1016 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1017 unsigned long flags;
1019 usbhs_lock(priv, flags);
1021 usbhsg_status_set(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1023 usbhsg_status_clr(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1024 usbhsg_update_pullup(priv);
1025 usbhs_unlock(priv, flags);
1030 static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
1032 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1035 usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
1037 usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
1039 gadget->is_selfpowered = (is_self != 0);
1044 static int usbhsg_vbus_session(struct usb_gadget *gadget, int is_active)
1046 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1047 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1048 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
1050 gpriv->vbus_active = !!is_active;
1052 renesas_usbhs_call_notify_hotplug(pdev);
1057 static const struct usb_gadget_ops usbhsg_gadget_ops = {
1058 .get_frame = usbhsg_get_frame,
1059 .set_selfpowered = usbhsg_set_selfpowered,
1060 .udc_start = usbhsg_gadget_start,
1061 .udc_stop = usbhsg_gadget_stop,
1062 .pullup = usbhsg_pullup,
1063 .vbus_session = usbhsg_vbus_session,
1066 static int usbhsg_start(struct usbhs_priv *priv)
1068 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
1071 static int usbhsg_stop(struct usbhs_priv *priv)
1073 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1075 /* cable disconnect */
1076 if (gpriv->driver &&
1077 gpriv->driver->disconnect)
1078 gpriv->driver->disconnect(&gpriv->gadget);
1080 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
1083 int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
1085 struct usbhsg_gpriv *gpriv;
1086 struct usbhsg_uep *uep;
1087 struct device *dev = usbhs_priv_to_dev(priv);
1088 struct renesas_usbhs_driver_pipe_config *pipe_configs =
1089 usbhs_get_dparam(priv, pipe_configs);
1090 int pipe_size = usbhs_get_dparam(priv, pipe_size);
1094 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
1098 uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
1101 goto usbhs_mod_gadget_probe_err_gpriv;
1104 gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED);
1105 dev_info(dev, "%stransceiver found\n",
1106 !IS_ERR(gpriv->transceiver) ? "" : "no ");
1111 * There is no guarantee that it is possible to access usb module here.
1112 * Don't accesses to it.
1113 * The accesse will be enable after "usbhsg_start"
1119 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
1122 gpriv->mod.name = "gadget";
1123 gpriv->mod.start = usbhsg_start;
1124 gpriv->mod.stop = usbhsg_stop;
1126 gpriv->uep_size = pipe_size;
1127 usbhsg_status_init(gpriv);
1132 gpriv->gadget.dev.parent = dev;
1133 gpriv->gadget.name = "renesas_usbhs_udc";
1134 gpriv->gadget.ops = &usbhsg_gadget_ops;
1135 gpriv->gadget.max_speed = USB_SPEED_HIGH;
1136 gpriv->gadget.quirk_avoids_skb_reserve = usbhs_get_dparam(priv,
1139 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
1144 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
1147 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
1149 uep->ep.name = uep->ep_name;
1150 uep->ep.ops = &usbhsg_ep_ops;
1151 INIT_LIST_HEAD(&uep->ep.ep_list);
1152 spin_lock_init(&uep->lock);
1155 if (usbhsg_is_dcp(uep)) {
1156 gpriv->gadget.ep0 = &uep->ep;
1157 usb_ep_set_maxpacket_limit(&uep->ep, 64);
1158 uep->ep.caps.type_control = true;
1160 /* init normal pipe */
1161 if (pipe_configs[i].type == USB_ENDPOINT_XFER_ISOC)
1162 uep->ep.caps.type_iso = true;
1163 if (pipe_configs[i].type == USB_ENDPOINT_XFER_BULK)
1164 uep->ep.caps.type_bulk = true;
1165 if (pipe_configs[i].type == USB_ENDPOINT_XFER_INT)
1166 uep->ep.caps.type_int = true;
1167 usb_ep_set_maxpacket_limit(&uep->ep,
1168 pipe_configs[i].bufsize);
1169 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
1171 uep->ep.caps.dir_in = true;
1172 uep->ep.caps.dir_out = true;
1175 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
1180 dev_info(dev, "gadget probed\n");
1187 usbhs_mod_gadget_probe_err_gpriv:
1193 void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
1195 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1197 usb_del_gadget_udc(&gpriv->gadget);