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);
469 gpriv->gadget.speed = usbhs_bus_get_speed(priv);
471 dev_dbg(dev, "state = %x : speed : %d\n",
472 usbhs_status_get_device_state(irq_state),
473 gpriv->gadget.speed);
478 static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
479 struct usbhs_irq_state *irq_state)
481 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
482 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
483 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
484 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
485 struct usb_ctrlrequest ctrl;
486 struct usbhsg_recip_handle *recip_handler = NULL;
487 int stage = usbhs_status_get_ctrl_stage(irq_state);
490 dev_dbg(dev, "stage = %d\n", stage);
496 * - "Interrupt Function"
497 * - "Control Transfer Stage Transition Interrupt"
498 * - Fig. "Control Transfer Stage Transitions"
502 case READ_DATA_STAGE:
503 pipe->handler = &usbhs_fifo_pio_push_handler;
505 case WRITE_DATA_STAGE:
506 pipe->handler = &usbhs_fifo_pio_pop_handler;
508 case NODATA_STATUS_STAGE:
509 pipe->handler = &usbhs_ctrl_stage_end_handler;
511 case READ_STATUS_STAGE:
512 case WRITE_STATUS_STAGE:
513 usbhs_dcp_control_transfer_done(pipe);
521 usbhs_usbreq_get_val(priv, &ctrl);
523 switch (ctrl.bRequestType & USB_TYPE_MASK) {
524 case USB_TYPE_STANDARD:
525 switch (ctrl.bRequest) {
526 case USB_REQ_CLEAR_FEATURE:
527 recip_handler = &req_clear_feature;
529 case USB_REQ_SET_FEATURE:
530 recip_handler = &req_set_feature;
532 case USB_REQ_GET_STATUS:
533 recip_handler = &req_get_status;
539 * setup stage / run recip
542 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
544 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
547 usbhs_pipe_stall(pipe);
557 static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
559 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
560 struct usbhs_pkt *pkt;
563 pkt = usbhs_pkt_pop(pipe, NULL);
567 usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ESHUTDOWN);
570 usbhs_pipe_disable(pipe);
580 static int usbhsg_ep_enable(struct usb_ep *ep,
581 const struct usb_endpoint_descriptor *desc)
583 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
584 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
585 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
586 struct usbhs_pipe *pipe;
590 usbhs_lock(priv, flags);
593 * if it already have pipe,
597 usbhs_pipe_clear(uep->pipe);
598 usbhs_pipe_sequence_data0(uep->pipe);
600 goto usbhsg_ep_enable_end;
603 pipe = usbhs_pipe_malloc(priv,
604 usb_endpoint_type(desc),
605 usb_endpoint_dir_in(desc));
608 pipe->mod_private = uep;
610 /* set epnum / maxp */
611 usbhs_pipe_config_update(pipe, 0,
612 usb_endpoint_num(desc),
613 usb_endpoint_maxp(desc));
616 * usbhs_fifo_dma_push/pop_handler try to
617 * use dmaengine if possible.
618 * It will use pio handler if impossible.
620 if (usb_endpoint_dir_in(desc)) {
621 pipe->handler = &usbhs_fifo_dma_push_handler;
623 pipe->handler = &usbhs_fifo_dma_pop_handler;
624 usbhs_xxxsts_clear(priv, BRDYSTS,
625 usbhs_pipe_number(pipe));
631 usbhsg_ep_enable_end:
632 usbhs_unlock(priv, flags);
637 static int usbhsg_ep_disable(struct usb_ep *ep)
639 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
640 struct usbhs_pipe *pipe;
644 spin_lock_irqsave(&uep->lock, flags);
645 pipe = usbhsg_uep_to_pipe(uep);
651 usbhsg_pipe_disable(uep);
652 usbhs_pipe_free(pipe);
654 uep->pipe->mod_private = NULL;
658 spin_unlock_irqrestore(&uep->lock, flags);
663 static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
666 struct usbhsg_request *ureq;
668 ureq = kzalloc(sizeof *ureq, gfp_flags);
672 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
677 static void usbhsg_ep_free_request(struct usb_ep *ep,
678 struct usb_request *req)
680 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
682 WARN_ON(!list_empty(&ureq->pkt.node));
686 static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
689 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
690 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
691 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
692 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
695 if (usbhsg_is_not_connected(gpriv) ||
696 unlikely(!gpriv->driver) ||
700 usbhsg_queue_push(uep, ureq);
705 static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
707 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
708 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
709 struct usbhs_pipe *pipe;
712 spin_lock_irqsave(&uep->lock, flags);
713 pipe = usbhsg_uep_to_pipe(uep);
715 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
718 * To dequeue a request, this driver should call the usbhsg_queue_pop()
719 * even if the pipe is NULL.
721 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
722 spin_unlock_irqrestore(&uep->lock, flags);
727 static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
729 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
730 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
731 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
732 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
733 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
736 usbhsg_pipe_disable(uep);
738 dev_dbg(dev, "set halt %d (pipe %d)\n",
739 halt, usbhs_pipe_number(pipe));
741 /******************** spin lock ********************/
742 usbhs_lock(priv, flags);
745 usbhs_pipe_stall(pipe);
747 usbhs_pipe_disable(pipe);
750 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
752 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
754 usbhs_unlock(priv, flags);
755 /******************** spin unlock ******************/
760 static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
762 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
765 static int usbhsg_ep_set_wedge(struct usb_ep *ep)
767 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
770 static struct usb_ep_ops usbhsg_ep_ops = {
771 .enable = usbhsg_ep_enable,
772 .disable = usbhsg_ep_disable,
774 .alloc_request = usbhsg_ep_alloc_request,
775 .free_request = usbhsg_ep_free_request,
777 .queue = usbhsg_ep_queue,
778 .dequeue = usbhsg_ep_dequeue,
780 .set_halt = usbhsg_ep_set_halt,
781 .set_wedge = usbhsg_ep_set_wedge,
787 static int usbhsg_can_pullup(struct usbhs_priv *priv)
789 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
791 return gpriv->driver &&
792 usbhsg_status_has(gpriv, USBHSG_STATUS_SOFT_CONNECT);
795 static void usbhsg_update_pullup(struct usbhs_priv *priv)
797 if (usbhsg_can_pullup(priv))
798 usbhs_sys_function_pullup(priv, 1);
800 usbhs_sys_function_pullup(priv, 0);
804 * usb module start/end
806 static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
808 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
809 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
810 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
811 struct device *dev = usbhs_priv_to_dev(priv);
815 /******************** spin lock ********************/
816 usbhs_lock(priv, flags);
818 usbhsg_status_set(gpriv, status);
819 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
820 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
821 ret = -1; /* not ready */
823 usbhs_unlock(priv, flags);
824 /******************** spin unlock ********************/
827 return 0; /* not ready is not error */
830 * enable interrupt and systems if ready
832 dev_dbg(dev, "start gadget\n");
835 * pipe initialize and enable DCP
837 usbhs_fifo_init(priv);
838 usbhs_pipe_init(priv,
839 usbhsg_dma_map_ctrl);
841 /* dcp init instead of usbhsg_ep_enable() */
842 dcp->pipe = usbhs_dcp_malloc(priv);
843 dcp->pipe->mod_private = dcp;
844 usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
847 * system config enble
852 usbhs_sys_function_ctrl(priv, 1);
853 usbhsg_update_pullup(priv);
856 * enable irq callback
858 mod->irq_dev_state = usbhsg_irq_dev_state;
859 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
860 usbhs_irq_callback_update(priv, mod);
865 static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
867 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
868 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
869 struct usbhsg_uep *uep;
870 struct device *dev = usbhs_priv_to_dev(priv);
874 /******************** spin lock ********************/
875 usbhs_lock(priv, flags);
877 usbhsg_status_clr(gpriv, status);
878 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
879 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
880 ret = -1; /* already done */
882 usbhs_unlock(priv, flags);
883 /******************** spin unlock ********************/
886 return 0; /* already done is not error */
889 * disable interrupt and systems if 1st try
891 usbhs_fifo_quit(priv);
893 /* disable all irq */
894 mod->irq_dev_state = NULL;
895 mod->irq_ctrl_stage = NULL;
896 usbhs_irq_callback_update(priv, mod);
898 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
901 usbhs_sys_set_test_mode(priv, 0);
902 usbhs_sys_function_ctrl(priv, 0);
904 /* disable all eps */
905 usbhsg_for_each_uep_with_dcp(uep, gpriv, i)
906 usbhsg_ep_disable(&uep->ep);
908 dev_dbg(dev, "stop gadget\n");
914 * VBUS provided by the PHY
916 static int usbhsm_phy_get_vbus(struct platform_device *pdev)
918 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
919 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
921 return gpriv->vbus_active;
924 static void usbhs_mod_phy_mode(struct usbhs_priv *priv)
926 struct usbhs_mod_info *info = &priv->mod_info;
928 info->irq_vbus = NULL;
929 priv->pfunc.get_vbus = usbhsm_phy_get_vbus;
931 usbhs_irq_callback_update(priv, NULL);
939 static int usbhsg_gadget_start(struct usb_gadget *gadget,
940 struct usb_gadget_driver *driver)
942 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
943 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
944 struct device *dev = usbhs_priv_to_dev(priv);
949 driver->max_speed < USB_SPEED_FULL)
952 /* connect to bus through transceiver */
953 if (!IS_ERR_OR_NULL(gpriv->transceiver)) {
954 ret = otg_set_peripheral(gpriv->transceiver->otg,
957 dev_err(dev, "%s: can't bind to transceiver\n",
962 /* get vbus using phy versions */
963 usbhs_mod_phy_mode(priv);
966 /* first hook up the driver ... */
967 gpriv->driver = driver;
969 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
972 static int usbhsg_gadget_stop(struct usb_gadget *gadget)
974 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
975 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
977 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
979 if (!IS_ERR_OR_NULL(gpriv->transceiver))
980 otg_set_peripheral(gpriv->transceiver->otg, NULL);
982 gpriv->driver = NULL;
990 static int usbhsg_get_frame(struct usb_gadget *gadget)
992 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
993 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
995 return usbhs_frame_get_num(priv);
998 static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
1000 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1001 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1002 unsigned long flags;
1004 usbhs_lock(priv, flags);
1006 usbhsg_status_set(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1008 usbhsg_status_clr(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1009 usbhsg_update_pullup(priv);
1010 usbhs_unlock(priv, flags);
1015 static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
1017 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1020 usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
1022 usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
1024 gadget->is_selfpowered = (is_self != 0);
1029 static int usbhsg_vbus_session(struct usb_gadget *gadget, int is_active)
1031 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1032 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1033 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
1035 gpriv->vbus_active = !!is_active;
1037 renesas_usbhs_call_notify_hotplug(pdev);
1042 static const struct usb_gadget_ops usbhsg_gadget_ops = {
1043 .get_frame = usbhsg_get_frame,
1044 .set_selfpowered = usbhsg_set_selfpowered,
1045 .udc_start = usbhsg_gadget_start,
1046 .udc_stop = usbhsg_gadget_stop,
1047 .pullup = usbhsg_pullup,
1048 .vbus_session = usbhsg_vbus_session,
1051 static int usbhsg_start(struct usbhs_priv *priv)
1053 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
1056 static int usbhsg_stop(struct usbhs_priv *priv)
1058 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1060 /* cable disconnect */
1061 if (gpriv->driver &&
1062 gpriv->driver->disconnect)
1063 gpriv->driver->disconnect(&gpriv->gadget);
1065 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
1068 int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
1070 struct usbhsg_gpriv *gpriv;
1071 struct usbhsg_uep *uep;
1072 struct device *dev = usbhs_priv_to_dev(priv);
1073 struct renesas_usbhs_driver_pipe_config *pipe_configs =
1074 usbhs_get_dparam(priv, pipe_configs);
1075 int pipe_size = usbhs_get_dparam(priv, pipe_size);
1079 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
1083 uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
1086 goto usbhs_mod_gadget_probe_err_gpriv;
1088 spin_lock_init(&uep->lock);
1090 gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED);
1091 dev_info(dev, "%stransceiver found\n",
1092 !IS_ERR(gpriv->transceiver) ? "" : "no ");
1097 * There is no guarantee that it is possible to access usb module here.
1098 * Don't accesses to it.
1099 * The accesse will be enable after "usbhsg_start"
1105 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
1108 gpriv->mod.name = "gadget";
1109 gpriv->mod.start = usbhsg_start;
1110 gpriv->mod.stop = usbhsg_stop;
1112 gpriv->uep_size = pipe_size;
1113 usbhsg_status_init(gpriv);
1118 gpriv->gadget.dev.parent = dev;
1119 gpriv->gadget.name = "renesas_usbhs_udc";
1120 gpriv->gadget.ops = &usbhsg_gadget_ops;
1121 gpriv->gadget.max_speed = USB_SPEED_HIGH;
1122 gpriv->gadget.quirk_avoids_skb_reserve = usbhs_get_dparam(priv,
1125 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
1130 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
1133 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
1135 uep->ep.name = uep->ep_name;
1136 uep->ep.ops = &usbhsg_ep_ops;
1137 INIT_LIST_HEAD(&uep->ep.ep_list);
1140 if (usbhsg_is_dcp(uep)) {
1141 gpriv->gadget.ep0 = &uep->ep;
1142 usb_ep_set_maxpacket_limit(&uep->ep, 64);
1143 uep->ep.caps.type_control = true;
1145 /* init normal pipe */
1146 if (pipe_configs[i].type == USB_ENDPOINT_XFER_ISOC)
1147 uep->ep.caps.type_iso = true;
1148 if (pipe_configs[i].type == USB_ENDPOINT_XFER_BULK)
1149 uep->ep.caps.type_bulk = true;
1150 if (pipe_configs[i].type == USB_ENDPOINT_XFER_INT)
1151 uep->ep.caps.type_int = true;
1152 usb_ep_set_maxpacket_limit(&uep->ep,
1153 pipe_configs[i].bufsize);
1154 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
1156 uep->ep.caps.dir_in = true;
1157 uep->ep.caps.dir_out = true;
1160 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
1165 dev_info(dev, "gadget probed\n");
1172 usbhs_mod_gadget_probe_err_gpriv:
1178 void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
1180 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1182 usb_del_gadget_udc(&gpriv->gadget);