1 // SPDX-License-Identifier: GPL-1.0+
5 * Copyright (C) 2011 Renesas Solutions Corp.
6 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
8 #include <linux/delay.h>
9 #include <linux/dma-mapping.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>
21 struct usbhsg_request {
22 struct usb_request req;
26 #define EP_NAME_SIZE 8
30 struct usbhs_pipe *pipe;
31 spinlock_t lock; /* protect the pipe */
33 char ep_name[EP_NAME_SIZE];
35 struct usbhsg_gpriv *gpriv;
39 struct usb_gadget gadget;
42 struct usbhsg_uep *uep;
45 struct usb_gadget_driver *driver;
46 struct usb_phy *transceiver;
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)
57 struct usbhsg_recip_handle {
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);
70 #define usbhsg_priv_to_gpriv(priv) \
72 usbhs_mod_get(priv, USBHS_GADGET), \
73 struct usbhsg_gpriv, mod)
75 #define __usbhsg_for_each_uep(start, pos, g, i) \
77 ((i) < (g)->uep_size) && ((pos) = (g)->uep + (i)); \
80 #define usbhsg_for_each_uep(pos, gpriv, i) \
81 __usbhsg_for_each_uep(1, pos, gpriv, i)
83 #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \
84 __usbhsg_for_each_uep(0, pos, gpriv, i)
86 #define usbhsg_gadget_to_gpriv(g)\
87 container_of(g, struct usbhsg_gpriv, gadget)
89 #define usbhsg_req_to_ureq(r)\
90 container_of(r, struct usbhsg_request, req)
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))
102 #define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
103 #define usbhsg_pkt_to_ureq(i) \
104 container_of(i, struct usbhsg_request, pkt)
106 #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
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)
117 static void __usbhsg_queue_pop(struct usbhsg_uep *uep,
118 struct usbhsg_request *ureq,
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);
127 dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
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));
135 static void usbhsg_queue_pop(struct usbhsg_uep *uep,
136 struct usbhsg_request *ureq,
139 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
140 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
143 usbhs_lock(priv, flags);
144 __usbhsg_queue_pop(uep, ureq, status);
145 usbhs_unlock(priv, flags);
148 static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
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);
155 ureq->req.actual = pkt->actual;
157 usbhs_lock(priv, flags);
159 __usbhsg_queue_pop(uep, ureq, 0);
160 usbhs_unlock(priv, flags);
163 static void usbhsg_queue_push(struct usbhsg_uep *uep,
164 struct usbhsg_request *ureq)
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;
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);
178 dev_dbg(dev, "pipe %d : queue push (%d)\n",
179 usbhs_pipe_number(pipe),
186 static int usbhsg_dma_map_ctrl(struct device *dma_dev, struct usbhs_pkt *pkt,
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;
195 dir = usbhs_pipe_is_dir_host(pipe);
198 /* it can not use scatter/gather */
199 WARN_ON(req->num_sgs);
201 ret = usb_gadget_map_request_by_dev(dma_dev, req, dir);
207 usb_gadget_unmap_request_by_dev(dma_dev, req, dir);
214 * USB_TYPE_STANDARD / clear feature functions
216 static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
217 struct usbhsg_uep *uep,
218 struct usb_ctrlrequest *ctrl)
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);
224 usbhs_dcp_control_transfer_done(pipe);
229 static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
230 struct usbhsg_uep *uep,
231 struct usb_ctrlrequest *ctrl)
233 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
234 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
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);
242 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
244 usbhs_pkt_start(pipe);
249 static 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,
257 * USB_TYPE_STANDARD / set feature functions
259 static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv,
260 struct usbhsg_uep *uep,
261 struct usb_ctrlrequest *ctrl)
263 switch (le16_to_cpu(ctrl->wValue)) {
264 case USB_DEVICE_TEST_MODE:
265 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
267 usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex >> 8));
270 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
277 static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv,
278 struct usbhsg_uep *uep,
279 struct usb_ctrlrequest *ctrl)
281 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
283 usbhs_pipe_stall(pipe);
285 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
290 static 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,
298 * USB_TYPE_STANDARD / get status functions
300 static void __usbhsg_recip_send_complete(struct usb_ep *ep,
301 struct usb_request *req)
303 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
305 /* free allocated recip-buffer/usb_request */
306 kfree(ureq->pkt.buf);
307 usb_ep_free_request(ep, req);
310 static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv,
311 unsigned short status)
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;
319 /* alloc new usb_request for recip */
320 req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC);
322 dev_err(dev, "recip request allocation fail\n");
326 /* alloc recip data buffer */
327 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
329 usb_ep_free_request(&dcp->ep, req);
333 /* recip data is status */
334 *buf = cpu_to_le16(status);
336 /* allocated usb_request/buffer will be freed */
337 req->complete = __usbhsg_recip_send_complete;
339 req->length = sizeof(*buf);
343 pipe->handler = &usbhs_fifo_pio_push_handler;
344 usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
347 static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv,
348 struct usbhsg_uep *uep,
349 struct usb_ctrlrequest *ctrl)
351 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
352 unsigned short status = 0;
354 if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED))
355 status = 1 << USB_DEVICE_SELF_POWERED;
357 __usbhsg_recip_send_status(gpriv, status);
362 static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv,
363 struct usbhsg_uep *uep,
364 struct usb_ctrlrequest *ctrl)
366 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
367 unsigned short status = 0;
369 __usbhsg_recip_send_status(gpriv, status);
374 static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv,
375 struct usbhsg_uep *uep,
376 struct usb_ctrlrequest *ctrl)
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;
382 if (usbhs_pipe_is_stall(pipe))
383 status = 1 << USB_ENDPOINT_HALT;
385 __usbhsg_recip_send_status(gpriv, status);
390 static 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,
400 static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
401 struct usbhsg_recip_handle *handler,
402 struct usb_ctrlrequest *ctrl)
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;
411 int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
412 struct usb_ctrlrequest *ctrl);
415 uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
416 pipe = usbhsg_uep_to_pipe(uep);
418 dev_err(dev, "wrong recip request\n");
423 case USB_RECIP_DEVICE:
425 func = handler->device;
427 case USB_RECIP_INTERFACE:
429 func = handler->interface;
431 case USB_RECIP_ENDPOINT:
433 func = handler->endpoint;
436 dev_warn(dev, "unsupported RECIP(%d)\n", recip);
442 dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
443 ret = func(priv, uep, ctrl);
452 * it will be called from usbhs_interrupt
454 static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
455 struct usbhs_irq_state *irq_state)
457 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
458 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
459 int state = usbhs_status_get_device_state(irq_state);
461 gpriv->gadget.speed = usbhs_bus_get_speed(priv);
463 dev_dbg(dev, "state = %x : speed : %d\n", state, gpriv->gadget.speed);
465 if (gpriv->gadget.speed != USB_SPEED_UNKNOWN &&
466 (state & SUSPENDED_STATE)) {
467 if (gpriv->driver && gpriv->driver->suspend)
468 gpriv->driver->suspend(&gpriv->gadget);
469 usb_gadget_set_state(&gpriv->gadget, USB_STATE_SUSPENDED);
475 static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
476 struct usbhs_irq_state *irq_state)
478 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
479 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
480 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
481 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
482 struct usb_ctrlrequest ctrl;
483 struct usbhsg_recip_handle *recip_handler = NULL;
484 int stage = usbhs_status_get_ctrl_stage(irq_state);
487 dev_dbg(dev, "stage = %d\n", stage);
493 * - "Interrupt Function"
494 * - "Control Transfer Stage Transition Interrupt"
495 * - Fig. "Control Transfer Stage Transitions"
499 case READ_DATA_STAGE:
500 pipe->handler = &usbhs_fifo_pio_push_handler;
502 case WRITE_DATA_STAGE:
503 pipe->handler = &usbhs_fifo_pio_pop_handler;
505 case NODATA_STATUS_STAGE:
506 pipe->handler = &usbhs_ctrl_stage_end_handler;
508 case READ_STATUS_STAGE:
509 case WRITE_STATUS_STAGE:
510 usbhs_dcp_control_transfer_done(pipe);
519 usbhs_usbreq_get_val(priv, &ctrl);
521 switch (ctrl.bRequestType & USB_TYPE_MASK) {
522 case USB_TYPE_STANDARD:
523 switch (ctrl.bRequest) {
524 case USB_REQ_CLEAR_FEATURE:
525 recip_handler = &req_clear_feature;
527 case USB_REQ_SET_FEATURE:
528 recip_handler = &req_set_feature;
530 case USB_REQ_GET_STATUS:
531 recip_handler = &req_get_status;
537 * setup stage / run recip
540 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
542 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
545 usbhs_pipe_stall(pipe);
555 static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
557 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
558 struct usbhs_pkt *pkt;
561 pkt = usbhs_pkt_pop(pipe, NULL);
565 usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ESHUTDOWN);
568 usbhs_pipe_disable(pipe);
578 static int usbhsg_ep_enable(struct usb_ep *ep,
579 const struct usb_endpoint_descriptor *desc)
581 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
582 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
583 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
584 struct usbhs_pipe *pipe;
588 usbhs_lock(priv, flags);
591 * if it already have pipe,
595 usbhs_pipe_clear(uep->pipe);
596 usbhs_pipe_sequence_data0(uep->pipe);
598 goto usbhsg_ep_enable_end;
601 pipe = usbhs_pipe_malloc(priv,
602 usb_endpoint_type(desc),
603 usb_endpoint_dir_in(desc));
606 pipe->mod_private = uep;
608 /* set epnum / maxp */
609 usbhs_pipe_config_update(pipe, 0,
610 usb_endpoint_num(desc),
611 usb_endpoint_maxp(desc));
614 * usbhs_fifo_dma_push/pop_handler try to
615 * use dmaengine if possible.
616 * It will use pio handler if impossible.
618 if (usb_endpoint_dir_in(desc)) {
619 pipe->handler = &usbhs_fifo_dma_push_handler;
621 pipe->handler = &usbhs_fifo_dma_pop_handler;
622 usbhs_xxxsts_clear(priv, BRDYSTS,
623 usbhs_pipe_number(pipe));
629 usbhsg_ep_enable_end:
630 usbhs_unlock(priv, flags);
635 static int usbhsg_ep_disable(struct usb_ep *ep)
637 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
638 struct usbhs_pipe *pipe;
641 spin_lock_irqsave(&uep->lock, flags);
642 pipe = usbhsg_uep_to_pipe(uep);
646 usbhsg_pipe_disable(uep);
647 usbhs_pipe_free(pipe);
649 uep->pipe->mod_private = NULL;
653 spin_unlock_irqrestore(&uep->lock, flags);
658 static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
661 struct usbhsg_request *ureq;
663 ureq = kzalloc(sizeof *ureq, gfp_flags);
667 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
672 static void usbhsg_ep_free_request(struct usb_ep *ep,
673 struct usb_request *req)
675 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
677 WARN_ON(!list_empty(&ureq->pkt.node));
681 static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
684 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
685 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
686 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
687 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
690 if (usbhsg_is_not_connected(gpriv) ||
691 unlikely(!gpriv->driver) ||
695 usbhsg_queue_push(uep, ureq);
700 static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
702 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
703 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
704 struct usbhs_pipe *pipe;
707 spin_lock_irqsave(&uep->lock, flags);
708 pipe = usbhsg_uep_to_pipe(uep);
710 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
713 * To dequeue a request, this driver should call the usbhsg_queue_pop()
714 * even if the pipe is NULL.
716 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
717 spin_unlock_irqrestore(&uep->lock, flags);
722 static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
724 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
725 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
726 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
727 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
728 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
732 dev_dbg(dev, "set halt %d (pipe %d)\n",
733 halt, usbhs_pipe_number(pipe));
735 /******************** spin lock ********************/
736 usbhs_lock(priv, flags);
739 * According to usb_ep_set_halt()'s description, this function should
740 * return -EAGAIN if the IN endpoint has any queue or data. Note
741 * that the usbhs_pipe_is_dir_in() returns false if the pipe is an
742 * IN endpoint in the gadget mode.
744 if (!usbhs_pipe_is_dir_in(pipe) && (__usbhsf_pkt_get(pipe) ||
745 usbhs_pipe_contains_transmittable_data(pipe))) {
751 usbhs_pipe_stall(pipe);
753 usbhs_pipe_disable(pipe);
756 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
758 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
761 usbhs_unlock(priv, flags);
762 /******************** spin unlock ******************/
767 static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
769 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
772 static int usbhsg_ep_set_wedge(struct usb_ep *ep)
774 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
777 static const struct usb_ep_ops usbhsg_ep_ops = {
778 .enable = usbhsg_ep_enable,
779 .disable = usbhsg_ep_disable,
781 .alloc_request = usbhsg_ep_alloc_request,
782 .free_request = usbhsg_ep_free_request,
784 .queue = usbhsg_ep_queue,
785 .dequeue = usbhsg_ep_dequeue,
787 .set_halt = usbhsg_ep_set_halt,
788 .set_wedge = usbhsg_ep_set_wedge,
794 static int usbhsg_can_pullup(struct usbhs_priv *priv)
796 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
798 return gpriv->driver &&
799 usbhsg_status_has(gpriv, USBHSG_STATUS_SOFT_CONNECT);
802 static void usbhsg_update_pullup(struct usbhs_priv *priv)
804 if (usbhsg_can_pullup(priv))
805 usbhs_sys_function_pullup(priv, 1);
807 usbhs_sys_function_pullup(priv, 0);
811 * usb module start/end
813 static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
815 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
816 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
817 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
818 struct device *dev = usbhs_priv_to_dev(priv);
822 /******************** spin lock ********************/
823 usbhs_lock(priv, flags);
825 usbhsg_status_set(gpriv, status);
826 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
827 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
828 ret = -1; /* not ready */
830 usbhs_unlock(priv, flags);
831 /******************** spin unlock ********************/
834 return 0; /* not ready is not error */
837 * enable interrupt and systems if ready
839 dev_dbg(dev, "start gadget\n");
842 * pipe initialize and enable DCP
844 usbhs_fifo_init(priv);
845 usbhs_pipe_init(priv,
846 usbhsg_dma_map_ctrl);
848 /* dcp init instead of usbhsg_ep_enable() */
849 dcp->pipe = usbhs_dcp_malloc(priv);
850 dcp->pipe->mod_private = dcp;
851 usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
854 * system config enble
859 usbhs_sys_function_ctrl(priv, 1);
860 usbhsg_update_pullup(priv);
863 * enable irq callback
865 mod->irq_dev_state = usbhsg_irq_dev_state;
866 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
867 usbhs_irq_callback_update(priv, mod);
872 static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
874 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
875 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
876 struct usbhsg_uep *uep;
877 struct device *dev = usbhs_priv_to_dev(priv);
881 /******************** spin lock ********************/
882 usbhs_lock(priv, flags);
884 usbhsg_status_clr(gpriv, status);
885 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
886 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
887 ret = -1; /* already done */
889 usbhs_unlock(priv, flags);
890 /******************** spin unlock ********************/
893 return 0; /* already done is not error */
896 * disable interrupt and systems if 1st try
898 usbhs_fifo_quit(priv);
900 /* disable all irq */
901 mod->irq_dev_state = NULL;
902 mod->irq_ctrl_stage = NULL;
903 usbhs_irq_callback_update(priv, mod);
905 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
908 usbhs_sys_set_test_mode(priv, 0);
909 usbhs_sys_function_ctrl(priv, 0);
911 /* disable all eps */
912 usbhsg_for_each_uep_with_dcp(uep, gpriv, i)
913 usbhsg_ep_disable(&uep->ep);
915 dev_dbg(dev, "stop gadget\n");
921 * VBUS provided by the PHY
923 static int usbhsm_phy_get_vbus(struct platform_device *pdev)
925 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
926 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
928 return gpriv->vbus_active;
931 static void usbhs_mod_phy_mode(struct usbhs_priv *priv)
933 struct usbhs_mod_info *info = &priv->mod_info;
935 info->irq_vbus = NULL;
936 priv->pfunc.get_vbus = usbhsm_phy_get_vbus;
938 usbhs_irq_callback_update(priv, NULL);
946 static int usbhsg_gadget_start(struct usb_gadget *gadget,
947 struct usb_gadget_driver *driver)
949 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
950 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
951 struct device *dev = usbhs_priv_to_dev(priv);
956 driver->max_speed < USB_SPEED_FULL)
959 /* connect to bus through transceiver */
960 if (!IS_ERR_OR_NULL(gpriv->transceiver)) {
961 ret = otg_set_peripheral(gpriv->transceiver->otg,
964 dev_err(dev, "%s: can't bind to transceiver\n",
969 /* get vbus using phy versions */
970 usbhs_mod_phy_mode(priv);
973 /* first hook up the driver ... */
974 gpriv->driver = driver;
976 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
979 static int usbhsg_gadget_stop(struct usb_gadget *gadget)
981 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
982 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
984 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
986 if (!IS_ERR_OR_NULL(gpriv->transceiver))
987 otg_set_peripheral(gpriv->transceiver->otg, NULL);
989 gpriv->driver = NULL;
997 static int usbhsg_get_frame(struct usb_gadget *gadget)
999 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1000 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1002 return usbhs_frame_get_num(priv);
1005 static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
1007 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1008 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1009 unsigned long flags;
1011 usbhs_lock(priv, flags);
1013 usbhsg_status_set(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1015 usbhsg_status_clr(gpriv, USBHSG_STATUS_SOFT_CONNECT);
1016 usbhsg_update_pullup(priv);
1017 usbhs_unlock(priv, flags);
1022 static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
1024 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1027 usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
1029 usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
1031 gadget->is_selfpowered = (is_self != 0);
1036 static int usbhsg_vbus_session(struct usb_gadget *gadget, int is_active)
1038 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
1039 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
1040 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
1042 gpriv->vbus_active = !!is_active;
1044 renesas_usbhs_call_notify_hotplug(pdev);
1049 static const struct usb_gadget_ops usbhsg_gadget_ops = {
1050 .get_frame = usbhsg_get_frame,
1051 .set_selfpowered = usbhsg_set_selfpowered,
1052 .udc_start = usbhsg_gadget_start,
1053 .udc_stop = usbhsg_gadget_stop,
1054 .pullup = usbhsg_pullup,
1055 .vbus_session = usbhsg_vbus_session,
1058 static int usbhsg_start(struct usbhs_priv *priv)
1060 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
1063 static int usbhsg_stop(struct usbhs_priv *priv)
1065 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1067 /* cable disconnect */
1068 if (gpriv->driver &&
1069 gpriv->driver->disconnect)
1070 gpriv->driver->disconnect(&gpriv->gadget);
1072 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
1075 int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
1077 struct usbhsg_gpriv *gpriv;
1078 struct usbhsg_uep *uep;
1079 struct device *dev = usbhs_priv_to_dev(priv);
1080 struct renesas_usbhs_driver_pipe_config *pipe_configs =
1081 usbhs_get_dparam(priv, pipe_configs);
1082 int pipe_size = usbhs_get_dparam(priv, pipe_size);
1086 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
1090 uep = kcalloc(pipe_size, sizeof(struct usbhsg_uep), GFP_KERNEL);
1093 goto usbhs_mod_gadget_probe_err_gpriv;
1096 gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED);
1097 dev_info(dev, "%stransceiver found\n",
1098 !IS_ERR(gpriv->transceiver) ? "" : "no ");
1103 * There is no guarantee that it is possible to access usb module here.
1104 * Don't accesses to it.
1105 * The accesse will be enable after "usbhsg_start"
1111 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
1114 gpriv->mod.name = "gadget";
1115 gpriv->mod.start = usbhsg_start;
1116 gpriv->mod.stop = usbhsg_stop;
1118 gpriv->uep_size = pipe_size;
1119 usbhsg_status_init(gpriv);
1124 gpriv->gadget.dev.parent = dev;
1125 gpriv->gadget.name = "renesas_usbhs_udc";
1126 gpriv->gadget.ops = &usbhsg_gadget_ops;
1127 gpriv->gadget.max_speed = USB_SPEED_HIGH;
1128 gpriv->gadget.quirk_avoids_skb_reserve = usbhs_get_dparam(priv,
1131 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
1136 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
1139 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
1141 uep->ep.name = uep->ep_name;
1142 uep->ep.ops = &usbhsg_ep_ops;
1143 INIT_LIST_HEAD(&uep->ep.ep_list);
1144 spin_lock_init(&uep->lock);
1147 if (usbhsg_is_dcp(uep)) {
1148 gpriv->gadget.ep0 = &uep->ep;
1149 usb_ep_set_maxpacket_limit(&uep->ep, 64);
1150 uep->ep.caps.type_control = true;
1152 /* init normal pipe */
1153 if (pipe_configs[i].type == USB_ENDPOINT_XFER_ISOC)
1154 uep->ep.caps.type_iso = true;
1155 if (pipe_configs[i].type == USB_ENDPOINT_XFER_BULK)
1156 uep->ep.caps.type_bulk = true;
1157 if (pipe_configs[i].type == USB_ENDPOINT_XFER_INT)
1158 uep->ep.caps.type_int = true;
1159 usb_ep_set_maxpacket_limit(&uep->ep,
1160 pipe_configs[i].bufsize);
1161 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
1163 uep->ep.caps.dir_in = true;
1164 uep->ep.caps.dir_out = true;
1167 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
1172 dev_info(dev, "gadget probed\n");
1179 usbhs_mod_gadget_probe_err_gpriv:
1185 void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
1187 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1189 usb_del_gadget_udc(&gpriv->gadget);