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;
41 char ep_name[EP_NAME_SIZE];
43 struct usbhsg_gpriv *gpriv;
47 struct usb_gadget gadget;
50 struct usbhsg_uep *uep;
53 struct usb_gadget_driver *driver;
54 struct usb_phy *transceiver;
58 #define USBHSG_STATUS_STARTED (1 << 0)
59 #define USBHSG_STATUS_REGISTERD (1 << 1)
60 #define USBHSG_STATUS_WEDGE (1 << 2)
61 #define USBHSG_STATUS_SELF_POWERED (1 << 3)
62 #define USBHSG_STATUS_SOFT_CONNECT (1 << 4)
65 struct usbhsg_recip_handle {
67 int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
68 struct usb_ctrlrequest *ctrl);
69 int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
70 struct usb_ctrlrequest *ctrl);
71 int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
72 struct usb_ctrlrequest *ctrl);
78 #define usbhsg_priv_to_gpriv(priv) \
80 usbhs_mod_get(priv, USBHS_GADGET), \
81 struct usbhsg_gpriv, mod)
83 #define __usbhsg_for_each_uep(start, pos, g, i) \
85 ((i) < (g)->uep_size) && ((pos) = (g)->uep + (i)); \
88 #define usbhsg_for_each_uep(pos, gpriv, i) \
89 __usbhsg_for_each_uep(1, pos, gpriv, i)
91 #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \
92 __usbhsg_for_each_uep(0, pos, gpriv, i)
94 #define usbhsg_gadget_to_gpriv(g)\
95 container_of(g, struct usbhsg_gpriv, gadget)
97 #define usbhsg_req_to_ureq(r)\
98 container_of(r, struct usbhsg_request, req)
100 #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep)
101 #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv)
102 #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv)
103 #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep)
104 #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i)
105 #define usbhsg_uep_to_gpriv(u) ((u)->gpriv)
106 #define usbhsg_uep_to_pipe(u) ((u)->pipe)
107 #define usbhsg_pipe_to_uep(p) ((p)->mod_private)
108 #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
110 #define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
111 #define usbhsg_pkt_to_ureq(i) \
112 container_of(i, struct usbhsg_request, pkt)
114 #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
117 #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0)
118 #define usbhsg_status_set(gp, b) (gp->status |= b)
119 #define usbhsg_status_clr(gp, b) (gp->status &= ~b)
120 #define usbhsg_status_has(gp, b) (gp->status & b)
125 static void __usbhsg_queue_pop(struct usbhsg_uep *uep,
126 struct usbhsg_request *ureq,
129 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
130 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
131 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
132 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
135 dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
137 ureq->req.status = status;
138 spin_unlock(usbhs_priv_to_lock(priv));
139 usb_gadget_giveback_request(&uep->ep, &ureq->req);
140 spin_lock(usbhs_priv_to_lock(priv));
143 static void usbhsg_queue_pop(struct usbhsg_uep *uep,
144 struct usbhsg_request *ureq,
147 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
148 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
151 usbhs_lock(priv, flags);
152 __usbhsg_queue_pop(uep, ureq, status);
153 usbhs_unlock(priv, flags);
156 static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
158 struct usbhs_pipe *pipe = pkt->pipe;
159 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
160 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
163 ureq->req.actual = pkt->actual;
165 usbhs_lock(priv, flags);
167 __usbhsg_queue_pop(uep, ureq, 0);
168 usbhs_unlock(priv, flags);
171 static void usbhsg_queue_push(struct usbhsg_uep *uep,
172 struct usbhsg_request *ureq)
174 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
175 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
176 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
177 struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
178 struct usb_request *req = &ureq->req;
181 req->status = -EINPROGRESS;
182 usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
183 req->buf, req->length, req->zero, -1);
184 usbhs_pkt_start(pipe);
186 dev_dbg(dev, "pipe %d : queue push (%d)\n",
187 usbhs_pipe_number(pipe),
194 static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
196 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
197 struct usb_request *req = &ureq->req;
198 struct usbhs_pipe *pipe = pkt->pipe;
199 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
200 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
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(&gpriv->gadget, req, dir);
216 usb_gadget_unmap_request(&gpriv->gadget, 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);
339 dev_err(dev, "recip data allocation fail\n");
343 /* recip data is status */
344 *buf = cpu_to_le16(status);
346 /* allocated usb_request/buffer will be freed */
347 req->complete = __usbhsg_recip_send_complete;
349 req->length = sizeof(*buf);
353 pipe->handler = &usbhs_fifo_pio_push_handler;
354 usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
357 static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv,
358 struct usbhsg_uep *uep,
359 struct usb_ctrlrequest *ctrl)
361 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
362 unsigned short status = 0;
364 if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED))
365 status = 1 << USB_DEVICE_SELF_POWERED;
367 __usbhsg_recip_send_status(gpriv, status);
372 static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv,
373 struct usbhsg_uep *uep,
374 struct usb_ctrlrequest *ctrl)
376 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
377 unsigned short status = 0;
379 __usbhsg_recip_send_status(gpriv, status);
384 static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv,
385 struct usbhsg_uep *uep,
386 struct usb_ctrlrequest *ctrl)
388 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
389 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
390 unsigned short status = 0;
392 if (usbhs_pipe_is_stall(pipe))
393 status = 1 << USB_ENDPOINT_HALT;
395 __usbhsg_recip_send_status(gpriv, status);
400 static struct usbhsg_recip_handle req_get_status = {
401 .name = "get status",
402 .device = usbhsg_recip_handler_std_get_device,
403 .interface = usbhsg_recip_handler_std_get_interface,
404 .endpoint = usbhsg_recip_handler_std_get_endpoint,
410 static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
411 struct usbhsg_recip_handle *handler,
412 struct usb_ctrlrequest *ctrl)
414 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
415 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
416 struct usbhsg_uep *uep;
417 struct usbhs_pipe *pipe;
418 int recip = ctrl->bRequestType & USB_RECIP_MASK;
419 int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
421 int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
422 struct usb_ctrlrequest *ctrl);
425 uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
426 pipe = usbhsg_uep_to_pipe(uep);
428 dev_err(dev, "wrong recip request\n");
433 case USB_RECIP_DEVICE:
435 func = handler->device;
437 case USB_RECIP_INTERFACE:
439 func = handler->interface;
441 case USB_RECIP_ENDPOINT:
443 func = handler->endpoint;
446 dev_warn(dev, "unsupported RECIP(%d)\n", recip);
452 dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
453 ret = func(priv, uep, ctrl);
462 * it will be called from usbhs_interrupt
464 static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
465 struct usbhs_irq_state *irq_state)
467 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
468 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
470 gpriv->gadget.speed = usbhs_bus_get_speed(priv);
472 dev_dbg(dev, "state = %x : speed : %d\n",
473 usbhs_status_get_device_state(irq_state),
474 gpriv->gadget.speed);
479 static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
480 struct usbhs_irq_state *irq_state)
482 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
483 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
484 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
485 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
486 struct usb_ctrlrequest ctrl;
487 struct usbhsg_recip_handle *recip_handler = NULL;
488 int stage = usbhs_status_get_ctrl_stage(irq_state);
491 dev_dbg(dev, "stage = %d\n", stage);
497 * - "Interrupt Function"
498 * - "Control Transfer Stage Transition Interrupt"
499 * - Fig. "Control Transfer Stage Transitions"
503 case READ_DATA_STAGE:
504 pipe->handler = &usbhs_fifo_pio_push_handler;
506 case WRITE_DATA_STAGE:
507 pipe->handler = &usbhs_fifo_pio_pop_handler;
509 case NODATA_STATUS_STAGE:
510 pipe->handler = &usbhs_ctrl_stage_end_handler;
512 case READ_STATUS_STAGE:
513 case WRITE_STATUS_STAGE:
514 usbhs_dcp_control_transfer_done(pipe);
522 usbhs_usbreq_get_val(priv, &ctrl);
524 switch (ctrl.bRequestType & USB_TYPE_MASK) {
525 case USB_TYPE_STANDARD:
526 switch (ctrl.bRequest) {
527 case USB_REQ_CLEAR_FEATURE:
528 recip_handler = &req_clear_feature;
530 case USB_REQ_SET_FEATURE:
531 recip_handler = &req_set_feature;
533 case USB_REQ_GET_STATUS:
534 recip_handler = &req_get_status;
540 * setup stage / run recip
543 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
545 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
548 usbhs_pipe_stall(pipe);
558 static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
560 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
561 struct usbhs_pkt *pkt;
564 pkt = usbhs_pkt_pop(pipe, NULL);
568 usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ESHUTDOWN);
571 usbhs_pipe_disable(pipe);
581 static int usbhsg_ep_enable(struct usb_ep *ep,
582 const struct usb_endpoint_descriptor *desc)
584 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
585 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
586 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
587 struct usbhs_pipe *pipe;
591 * if it already have pipe,
595 usbhs_pipe_clear(uep->pipe);
596 usbhs_pipe_sequence_data0(uep->pipe);
600 pipe = usbhs_pipe_malloc(priv,
601 usb_endpoint_type(desc),
602 usb_endpoint_dir_in(desc));
605 pipe->mod_private = uep;
607 /* set epnum / maxp */
608 usbhs_pipe_config_update(pipe, 0,
609 usb_endpoint_num(desc),
610 usb_endpoint_maxp(desc));
613 * usbhs_fifo_dma_push/pop_handler try to
614 * use dmaengine if possible.
615 * It will use pio handler if impossible.
617 if (usb_endpoint_dir_in(desc))
618 pipe->handler = &usbhs_fifo_dma_push_handler;
620 pipe->handler = &usbhs_fifo_dma_pop_handler;
628 static int usbhsg_ep_disable(struct usb_ep *ep)
630 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
631 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
636 usbhsg_pipe_disable(uep);
637 usbhs_pipe_free(pipe);
639 uep->pipe->mod_private = NULL;
645 static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
648 struct usbhsg_request *ureq;
650 ureq = kzalloc(sizeof *ureq, gfp_flags);
654 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
659 static void usbhsg_ep_free_request(struct usb_ep *ep,
660 struct usb_request *req)
662 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
664 WARN_ON(!list_empty(&ureq->pkt.node));
668 static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
671 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
672 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
673 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
674 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
677 if (usbhsg_is_not_connected(gpriv) ||
678 unlikely(!gpriv->driver) ||
682 usbhsg_queue_push(uep, ureq);
687 static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
689 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
690 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
691 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
694 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
697 * To dequeue a request, this driver should call the usbhsg_queue_pop()
698 * even if the pipe is NULL.
700 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
705 static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
707 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
708 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
709 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
710 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
711 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
714 usbhsg_pipe_disable(uep);
716 dev_dbg(dev, "set halt %d (pipe %d)\n",
717 halt, usbhs_pipe_number(pipe));
719 /******************** spin lock ********************/
720 usbhs_lock(priv, flags);
723 usbhs_pipe_stall(pipe);
725 usbhs_pipe_disable(pipe);
728 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
730 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
732 usbhs_unlock(priv, flags);
733 /******************** spin unlock ******************/
738 static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
740 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
743 static int usbhsg_ep_set_wedge(struct usb_ep *ep)
745 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
748 static struct usb_ep_ops usbhsg_ep_ops = {
749 .enable = usbhsg_ep_enable,
750 .disable = usbhsg_ep_disable,
752 .alloc_request = usbhsg_ep_alloc_request,
753 .free_request = usbhsg_ep_free_request,
755 .queue = usbhsg_ep_queue,
756 .dequeue = usbhsg_ep_dequeue,
758 .set_halt = usbhsg_ep_set_halt,
759 .set_wedge = usbhsg_ep_set_wedge,
765 static int usbhsg_can_pullup(struct usbhs_priv *priv)
767 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
769 return gpriv->driver &&
770 usbhsg_status_has(gpriv, USBHSG_STATUS_SOFT_CONNECT);
773 static void usbhsg_update_pullup(struct usbhs_priv *priv)
775 if (usbhsg_can_pullup(priv))
776 usbhs_sys_function_pullup(priv, 1);
778 usbhs_sys_function_pullup(priv, 0);
782 * usb module start/end
784 static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
786 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
787 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
788 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
789 struct device *dev = usbhs_priv_to_dev(priv);
793 /******************** spin lock ********************/
794 usbhs_lock(priv, flags);
796 usbhsg_status_set(gpriv, status);
797 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
798 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
799 ret = -1; /* not ready */
801 usbhs_unlock(priv, flags);
802 /******************** spin unlock ********************/
805 return 0; /* not ready is not error */
808 * enable interrupt and systems if ready
810 dev_dbg(dev, "start gadget\n");
813 * pipe initialize and enable DCP
815 usbhs_fifo_init(priv);
816 usbhs_pipe_init(priv,
817 usbhsg_dma_map_ctrl);
819 /* dcp init instead of usbhsg_ep_enable() */
820 dcp->pipe = usbhs_dcp_malloc(priv);
821 dcp->pipe->mod_private = dcp;
822 usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
825 * system config enble
830 usbhs_sys_function_ctrl(priv, 1);
831 usbhsg_update_pullup(priv);
834 * enable irq callback
836 mod->irq_dev_state = usbhsg_irq_dev_state;
837 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
838 usbhs_irq_callback_update(priv, mod);
843 static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
845 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
846 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
847 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
848 struct device *dev = usbhs_priv_to_dev(priv);
852 /******************** spin lock ********************/
853 usbhs_lock(priv, flags);
855 usbhsg_status_clr(gpriv, status);
856 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
857 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
858 ret = -1; /* already done */
860 usbhs_unlock(priv, flags);
861 /******************** spin unlock ********************/
864 return 0; /* already done is not error */
867 * disable interrupt and systems if 1st try
869 usbhs_fifo_quit(priv);
871 /* disable all irq */
872 mod->irq_dev_state = NULL;
873 mod->irq_ctrl_stage = NULL;
874 usbhs_irq_callback_update(priv, mod);
876 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
879 usbhs_sys_set_test_mode(priv, 0);
880 usbhs_sys_function_ctrl(priv, 0);
882 usbhsg_ep_disable(&dcp->ep);
884 dev_dbg(dev, "stop gadget\n");
890 * VBUS provided by the PHY
892 static int usbhsm_phy_get_vbus(struct platform_device *pdev)
894 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
895 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
897 return gpriv->vbus_active;
900 static void usbhs_mod_phy_mode(struct usbhs_priv *priv)
902 struct usbhs_mod_info *info = &priv->mod_info;
904 info->irq_vbus = NULL;
905 priv->pfunc.get_vbus = usbhsm_phy_get_vbus;
907 usbhs_irq_callback_update(priv, NULL);
915 static int usbhsg_gadget_start(struct usb_gadget *gadget,
916 struct usb_gadget_driver *driver)
918 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
919 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
920 struct device *dev = usbhs_priv_to_dev(priv);
925 driver->max_speed < USB_SPEED_FULL)
928 /* connect to bus through transceiver */
929 if (!IS_ERR_OR_NULL(gpriv->transceiver)) {
930 ret = otg_set_peripheral(gpriv->transceiver->otg,
933 dev_err(dev, "%s: can't bind to transceiver\n",
938 /* get vbus using phy versions */
939 usbhs_mod_phy_mode(priv);
942 /* first hook up the driver ... */
943 gpriv->driver = driver;
945 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
948 static int usbhsg_gadget_stop(struct usb_gadget *gadget)
950 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
951 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
953 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
955 if (!IS_ERR_OR_NULL(gpriv->transceiver))
956 otg_set_peripheral(gpriv->transceiver->otg, NULL);
958 gpriv->driver = NULL;
966 static int usbhsg_get_frame(struct usb_gadget *gadget)
968 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
969 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
971 return usbhs_frame_get_num(priv);
974 static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
976 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
977 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
980 usbhs_lock(priv, flags);
982 usbhsg_status_set(gpriv, USBHSG_STATUS_SOFT_CONNECT);
984 usbhsg_status_clr(gpriv, USBHSG_STATUS_SOFT_CONNECT);
985 usbhsg_update_pullup(priv);
986 usbhs_unlock(priv, flags);
991 static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
993 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
996 usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
998 usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
1000 gadget->is_selfpowered = (is_self != 0);
1005 static int usbhsg_vbus_session(struct usb_gadget *gadget, int is_active)
1007 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1008 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1009 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
1011 gpriv->vbus_active = !!is_active;
1013 renesas_usbhs_call_notify_hotplug(pdev);
1018 static const struct usb_gadget_ops usbhsg_gadget_ops = {
1019 .get_frame = usbhsg_get_frame,
1020 .set_selfpowered = usbhsg_set_selfpowered,
1021 .udc_start = usbhsg_gadget_start,
1022 .udc_stop = usbhsg_gadget_stop,
1023 .pullup = usbhsg_pullup,
1024 .vbus_session = usbhsg_vbus_session,
1027 static int usbhsg_start(struct usbhs_priv *priv)
1029 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
1032 static int usbhsg_stop(struct usbhs_priv *priv)
1034 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1036 /* cable disconnect */
1037 if (gpriv->driver &&
1038 gpriv->driver->disconnect)
1039 gpriv->driver->disconnect(&gpriv->gadget);
1041 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
1044 int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
1046 struct usbhsg_gpriv *gpriv;
1047 struct usbhsg_uep *uep;
1048 struct device *dev = usbhs_priv_to_dev(priv);
1049 struct renesas_usbhs_driver_pipe_config *pipe_configs =
1050 usbhs_get_dparam(priv, pipe_configs);
1051 int pipe_size = usbhs_get_dparam(priv, pipe_size);
1055 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
1057 dev_err(dev, "Could not allocate gadget priv\n");
1061 uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
1063 dev_err(dev, "Could not allocate ep\n");
1065 goto usbhs_mod_gadget_probe_err_gpriv;
1068 gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED);
1069 dev_info(dev, "%stransceiver found\n",
1070 gpriv->transceiver ? "" : "no ");
1075 * There is no guarantee that it is possible to access usb module here.
1076 * Don't accesses to it.
1077 * The accesse will be enable after "usbhsg_start"
1083 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
1086 gpriv->mod.name = "gadget";
1087 gpriv->mod.start = usbhsg_start;
1088 gpriv->mod.stop = usbhsg_stop;
1090 gpriv->uep_size = pipe_size;
1091 usbhsg_status_init(gpriv);
1096 gpriv->gadget.dev.parent = dev;
1097 gpriv->gadget.name = "renesas_usbhs_udc";
1098 gpriv->gadget.ops = &usbhsg_gadget_ops;
1099 gpriv->gadget.max_speed = USB_SPEED_HIGH;
1101 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
1106 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
1109 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
1111 uep->ep.name = uep->ep_name;
1112 uep->ep.ops = &usbhsg_ep_ops;
1113 INIT_LIST_HEAD(&uep->ep.ep_list);
1116 if (usbhsg_is_dcp(uep)) {
1117 gpriv->gadget.ep0 = &uep->ep;
1118 usb_ep_set_maxpacket_limit(&uep->ep, 64);
1119 uep->ep.caps.type_control = true;
1121 /* init normal pipe */
1122 if (pipe_configs[i].type == USB_ENDPOINT_XFER_ISOC)
1123 uep->ep.caps.type_iso = true;
1124 if (pipe_configs[i].type == USB_ENDPOINT_XFER_BULK)
1125 uep->ep.caps.type_bulk = true;
1126 if (pipe_configs[i].type == USB_ENDPOINT_XFER_INT)
1127 uep->ep.caps.type_int = true;
1128 usb_ep_set_maxpacket_limit(&uep->ep,
1129 pipe_configs[i].bufsize);
1130 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
1132 uep->ep.caps.dir_in = true;
1133 uep->ep.caps.dir_out = true;
1136 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
1141 dev_info(dev, "gadget probed\n");
1148 usbhs_mod_gadget_probe_err_gpriv:
1154 void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
1156 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1158 usb_del_gadget_udc(&gpriv->gadget);