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>
29 struct usbhsg_request {
30 struct usb_request req;
34 #define EP_NAME_SIZE 8
38 struct usbhs_pipe *pipe;
40 char ep_name[EP_NAME_SIZE];
42 struct usbhsg_gpriv *gpriv;
46 struct usb_gadget gadget;
49 struct usbhsg_uep *uep;
52 struct usb_gadget_driver *driver;
55 #define USBHSG_STATUS_STARTED (1 << 0)
56 #define USBHSG_STATUS_REGISTERD (1 << 1)
57 #define USBHSG_STATUS_WEDGE (1 << 2)
60 struct usbhsg_recip_handle {
62 int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
63 struct usb_ctrlrequest *ctrl);
64 int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
65 struct usb_ctrlrequest *ctrl);
66 int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
67 struct usb_ctrlrequest *ctrl);
73 #define usbhsg_priv_to_gpriv(priv) \
75 usbhs_mod_get(priv, USBHS_GADGET), \
76 struct usbhsg_gpriv, mod)
78 #define __usbhsg_for_each_uep(start, pos, g, i) \
79 for (i = start, pos = (g)->uep + i; \
81 i++, pos = (g)->uep + i)
83 #define usbhsg_for_each_uep(pos, gpriv, i) \
84 __usbhsg_for_each_uep(1, pos, gpriv, i)
86 #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \
87 __usbhsg_for_each_uep(0, pos, gpriv, i)
89 #define usbhsg_gadget_to_gpriv(g)\
90 container_of(g, struct usbhsg_gpriv, gadget)
92 #define usbhsg_req_to_ureq(r)\
93 container_of(r, struct usbhsg_request, req)
95 #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep)
96 #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv)
97 #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv)
98 #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep)
99 #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i)
100 #define usbhsg_uep_to_gpriv(u) ((u)->gpriv)
101 #define usbhsg_uep_to_pipe(u) ((u)->pipe)
102 #define usbhsg_pipe_to_uep(p) ((p)->mod_private)
103 #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
105 #define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
106 #define usbhsg_pkt_to_ureq(i) \
107 container_of(i, struct usbhsg_request, pkt)
109 #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
112 #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0)
113 #define usbhsg_status_set(gp, b) (gp->status |= b)
114 #define usbhsg_status_clr(gp, b) (gp->status &= ~b)
115 #define usbhsg_status_has(gp, b) (gp->status & b)
120 static void usbhsg_queue_pop(struct usbhsg_uep *uep,
121 struct usbhsg_request *ureq,
124 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
125 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
126 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
128 dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
130 ureq->req.status = status;
131 ureq->req.complete(&uep->ep, &ureq->req);
134 static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
136 struct usbhs_pipe *pipe = pkt->pipe;
137 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
138 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
140 ureq->req.actual = pkt->actual;
142 usbhsg_queue_pop(uep, ureq, 0);
145 static void usbhsg_queue_push(struct usbhsg_uep *uep,
146 struct usbhsg_request *ureq)
148 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
149 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
150 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
151 struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
152 struct usb_request *req = &ureq->req;
155 req->status = -EINPROGRESS;
156 usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
157 req->buf, req->length, req->zero, -1);
158 usbhs_pkt_start(pipe);
160 dev_dbg(dev, "pipe %d : queue push (%d)\n",
161 usbhs_pipe_number(pipe),
168 static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
170 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
171 struct usb_request *req = &ureq->req;
172 struct usbhs_pipe *pipe = pkt->pipe;
173 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
174 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
175 enum dma_data_direction dir;
178 dir = usbhs_pipe_is_dir_host(pipe);
181 /* it can not use scatter/gather */
182 WARN_ON(req->num_sgs);
184 ret = usb_gadget_map_request(&gpriv->gadget, req, dir);
190 usb_gadget_unmap_request(&gpriv->gadget, req, dir);
197 * USB_TYPE_STANDARD / clear feature functions
199 static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
200 struct usbhsg_uep *uep,
201 struct usb_ctrlrequest *ctrl)
203 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
204 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
205 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
207 usbhs_dcp_control_transfer_done(pipe);
212 static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
213 struct usbhsg_uep *uep,
214 struct usb_ctrlrequest *ctrl)
216 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
217 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
219 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
220 usbhs_pipe_disable(pipe);
221 usbhs_pipe_sequence_data0(pipe);
222 usbhs_pipe_enable(pipe);
225 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
227 usbhs_pkt_start(pipe);
232 struct usbhsg_recip_handle req_clear_feature = {
233 .name = "clear feature",
234 .device = usbhsg_recip_handler_std_control_done,
235 .interface = usbhsg_recip_handler_std_control_done,
236 .endpoint = usbhsg_recip_handler_std_clear_endpoint,
240 * USB_TYPE_STANDARD / set feature functions
242 static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv,
243 struct usbhsg_uep *uep,
244 struct usb_ctrlrequest *ctrl)
246 switch (le16_to_cpu(ctrl->wValue)) {
247 case USB_DEVICE_TEST_MODE:
248 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
250 usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex >> 8));
253 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
260 static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv,
261 struct usbhsg_uep *uep,
262 struct usb_ctrlrequest *ctrl)
264 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
266 usbhs_pipe_stall(pipe);
268 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
273 struct usbhsg_recip_handle req_set_feature = {
274 .name = "set feature",
275 .device = usbhsg_recip_handler_std_set_device,
276 .interface = usbhsg_recip_handler_std_control_done,
277 .endpoint = usbhsg_recip_handler_std_set_endpoint,
281 * USB_TYPE_STANDARD / get status functions
283 static void __usbhsg_recip_send_complete(struct usb_ep *ep,
284 struct usb_request *req)
286 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
288 /* free allocated recip-buffer/usb_request */
289 kfree(ureq->pkt.buf);
290 usb_ep_free_request(ep, req);
293 static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv,
294 unsigned short status)
296 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
297 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
298 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
299 struct usb_request *req;
302 /* alloc new usb_request for recip */
303 req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC);
305 dev_err(dev, "recip request allocation fail\n");
309 /* alloc recip data buffer */
310 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
312 usb_ep_free_request(&dcp->ep, req);
313 dev_err(dev, "recip data allocation fail\n");
317 /* recip data is status */
318 *buf = cpu_to_le16(status);
320 /* allocated usb_request/buffer will be freed */
321 req->complete = __usbhsg_recip_send_complete;
323 req->length = sizeof(*buf);
327 pipe->handler = &usbhs_fifo_pio_push_handler;
328 usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
331 static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv,
332 struct usbhsg_uep *uep,
333 struct usb_ctrlrequest *ctrl)
335 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
336 unsigned short status = 1 << USB_DEVICE_SELF_POWERED;
338 __usbhsg_recip_send_status(gpriv, status);
343 static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv,
344 struct usbhsg_uep *uep,
345 struct usb_ctrlrequest *ctrl)
347 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
348 unsigned short status = 0;
350 __usbhsg_recip_send_status(gpriv, status);
355 static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv,
356 struct usbhsg_uep *uep,
357 struct usb_ctrlrequest *ctrl)
359 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
360 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
361 unsigned short status = 0;
363 if (usbhs_pipe_is_stall(pipe))
364 status = 1 << USB_ENDPOINT_HALT;
366 __usbhsg_recip_send_status(gpriv, status);
371 struct usbhsg_recip_handle req_get_status = {
372 .name = "get status",
373 .device = usbhsg_recip_handler_std_get_device,
374 .interface = usbhsg_recip_handler_std_get_interface,
375 .endpoint = usbhsg_recip_handler_std_get_endpoint,
381 static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
382 struct usbhsg_recip_handle *handler,
383 struct usb_ctrlrequest *ctrl)
385 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
386 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
387 struct usbhsg_uep *uep;
388 struct usbhs_pipe *pipe;
389 int recip = ctrl->bRequestType & USB_RECIP_MASK;
390 int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
392 int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
393 struct usb_ctrlrequest *ctrl);
396 uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
397 pipe = usbhsg_uep_to_pipe(uep);
399 dev_err(dev, "wrong recip request\n");
404 case USB_RECIP_DEVICE:
406 func = handler->device;
408 case USB_RECIP_INTERFACE:
410 func = handler->interface;
412 case USB_RECIP_ENDPOINT:
414 func = handler->endpoint;
417 dev_warn(dev, "unsupported RECIP(%d)\n", recip);
423 dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
424 ret = func(priv, uep, ctrl);
433 * it will be called from usbhs_interrupt
435 static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
436 struct usbhs_irq_state *irq_state)
438 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
439 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
441 gpriv->gadget.speed = usbhs_bus_get_speed(priv);
443 dev_dbg(dev, "state = %x : speed : %d\n",
444 usbhs_status_get_device_state(irq_state),
445 gpriv->gadget.speed);
450 static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
451 struct usbhs_irq_state *irq_state)
453 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
454 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
455 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
456 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
457 struct usb_ctrlrequest ctrl;
458 struct usbhsg_recip_handle *recip_handler = NULL;
459 int stage = usbhs_status_get_ctrl_stage(irq_state);
462 dev_dbg(dev, "stage = %d\n", stage);
468 * - "Interrupt Function"
469 * - "Control Transfer Stage Transition Interrupt"
470 * - Fig. "Control Transfer Stage Transitions"
474 case READ_DATA_STAGE:
475 pipe->handler = &usbhs_fifo_pio_push_handler;
477 case WRITE_DATA_STAGE:
478 pipe->handler = &usbhs_fifo_pio_pop_handler;
480 case NODATA_STATUS_STAGE:
481 pipe->handler = &usbhs_ctrl_stage_end_handler;
490 usbhs_usbreq_get_val(priv, &ctrl);
492 switch (ctrl.bRequestType & USB_TYPE_MASK) {
493 case USB_TYPE_STANDARD:
494 switch (ctrl.bRequest) {
495 case USB_REQ_CLEAR_FEATURE:
496 recip_handler = &req_clear_feature;
498 case USB_REQ_SET_FEATURE:
499 recip_handler = &req_set_feature;
501 case USB_REQ_GET_STATUS:
502 recip_handler = &req_get_status;
508 * setup stage / run recip
511 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
513 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
516 usbhs_pipe_stall(pipe);
526 static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
528 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
529 struct usbhs_pkt *pkt;
532 pkt = usbhs_pkt_pop(pipe, NULL);
536 usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ECONNRESET);
539 usbhs_pipe_disable(pipe);
544 static void usbhsg_uep_init(struct usbhsg_gpriv *gpriv)
547 struct usbhsg_uep *uep;
549 usbhsg_for_each_uep_with_dcp(uep, gpriv, i)
558 static int usbhsg_ep_enable(struct usb_ep *ep,
559 const struct usb_endpoint_descriptor *desc)
561 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
562 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
563 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
564 struct usbhs_pipe *pipe;
568 * if it already have pipe,
572 usbhs_pipe_clear(uep->pipe);
573 usbhs_pipe_sequence_data0(uep->pipe);
577 pipe = usbhs_pipe_malloc(priv,
578 usb_endpoint_type(desc),
579 usb_endpoint_dir_in(desc));
582 pipe->mod_private = uep;
584 /* set epnum / maxp */
585 usbhs_pipe_config_update(pipe, 0,
586 usb_endpoint_num(desc),
587 usb_endpoint_maxp(desc));
590 * usbhs_fifo_dma_push/pop_handler try to
591 * use dmaengine if possible.
592 * It will use pio handler if impossible.
594 if (usb_endpoint_dir_in(desc))
595 pipe->handler = &usbhs_fifo_dma_push_handler;
597 pipe->handler = &usbhs_fifo_dma_pop_handler;
605 static int usbhsg_ep_disable(struct usb_ep *ep)
607 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
609 return usbhsg_pipe_disable(uep);
612 static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
615 struct usbhsg_request *ureq;
617 ureq = kzalloc(sizeof *ureq, gfp_flags);
621 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
626 static void usbhsg_ep_free_request(struct usb_ep *ep,
627 struct usb_request *req)
629 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
631 WARN_ON(!list_empty(&ureq->pkt.node));
635 static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
638 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
639 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
640 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
641 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
644 if (usbhsg_is_not_connected(gpriv) ||
645 unlikely(!gpriv->driver) ||
649 usbhsg_queue_push(uep, ureq);
654 static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
656 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
657 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
658 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
660 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
661 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
666 static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
668 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
669 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
670 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
671 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
672 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
675 usbhsg_pipe_disable(uep);
677 dev_dbg(dev, "set halt %d (pipe %d)\n",
678 halt, usbhs_pipe_number(pipe));
680 /******************** spin lock ********************/
681 usbhs_lock(priv, flags);
684 usbhs_pipe_stall(pipe);
686 usbhs_pipe_disable(pipe);
689 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
691 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
693 usbhs_unlock(priv, flags);
694 /******************** spin unlock ******************/
699 static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
701 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
704 static int usbhsg_ep_set_wedge(struct usb_ep *ep)
706 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
709 static struct usb_ep_ops usbhsg_ep_ops = {
710 .enable = usbhsg_ep_enable,
711 .disable = usbhsg_ep_disable,
713 .alloc_request = usbhsg_ep_alloc_request,
714 .free_request = usbhsg_ep_free_request,
716 .queue = usbhsg_ep_queue,
717 .dequeue = usbhsg_ep_dequeue,
719 .set_halt = usbhsg_ep_set_halt,
720 .set_wedge = usbhsg_ep_set_wedge,
724 * usb module start/end
726 static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
728 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
729 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
730 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
731 struct device *dev = usbhs_priv_to_dev(priv);
735 /******************** spin lock ********************/
736 usbhs_lock(priv, flags);
738 usbhsg_status_set(gpriv, status);
739 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
740 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
741 ret = -1; /* not ready */
743 usbhs_unlock(priv, flags);
744 /******************** spin unlock ********************/
747 return 0; /* not ready is not error */
750 * enable interrupt and systems if ready
752 dev_dbg(dev, "start gadget\n");
755 * pipe initialize and enable DCP
757 usbhs_pipe_init(priv,
758 usbhsg_dma_map_ctrl);
759 usbhs_fifo_init(priv);
760 usbhsg_uep_init(gpriv);
763 dcp->pipe = usbhs_dcp_malloc(priv);
764 dcp->pipe->mod_private = dcp;
765 usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
768 * system config enble
773 usbhs_sys_function_ctrl(priv, 1);
776 * enable irq callback
778 mod->irq_dev_state = usbhsg_irq_dev_state;
779 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
780 usbhs_irq_callback_update(priv, mod);
785 static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
787 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
788 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
789 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
790 struct device *dev = usbhs_priv_to_dev(priv);
794 /******************** spin lock ********************/
795 usbhs_lock(priv, flags);
797 usbhsg_status_clr(gpriv, status);
798 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
799 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
800 ret = -1; /* already done */
802 usbhs_unlock(priv, flags);
803 /******************** spin unlock ********************/
806 return 0; /* already done is not error */
809 * disable interrupt and systems if 1st try
811 usbhs_fifo_quit(priv);
813 /* disable all irq */
814 mod->irq_dev_state = NULL;
815 mod->irq_ctrl_stage = NULL;
816 usbhs_irq_callback_update(priv, mod);
818 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
821 usbhs_sys_set_test_mode(priv, 0);
822 usbhs_sys_function_ctrl(priv, 0);
824 usbhsg_pipe_disable(dcp);
826 dev_dbg(dev, "stop gadget\n");
836 static int usbhsg_gadget_start(struct usb_gadget *gadget,
837 struct usb_gadget_driver *driver)
839 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
840 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
844 driver->max_speed < USB_SPEED_FULL)
847 /* first hook up the driver ... */
848 gpriv->driver = driver;
849 gpriv->gadget.dev.driver = &driver->driver;
851 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
854 static int usbhsg_gadget_stop(struct usb_gadget *gadget,
855 struct usb_gadget_driver *driver)
857 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
858 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
864 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
865 gpriv->gadget.dev.driver = NULL;
866 gpriv->driver = NULL;
874 static int usbhsg_get_frame(struct usb_gadget *gadget)
876 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
877 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
879 return usbhs_frame_get_num(priv);
882 static struct usb_gadget_ops usbhsg_gadget_ops = {
883 .get_frame = usbhsg_get_frame,
884 .udc_start = usbhsg_gadget_start,
885 .udc_stop = usbhsg_gadget_stop,
888 static int usbhsg_start(struct usbhs_priv *priv)
890 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
893 static int usbhsg_stop(struct usbhs_priv *priv)
895 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
897 /* cable disconnect */
899 gpriv->driver->disconnect)
900 gpriv->driver->disconnect(&gpriv->gadget);
902 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
905 static void usbhs_mod_gadget_release(struct device *pdev)
910 int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
912 struct usbhsg_gpriv *gpriv;
913 struct usbhsg_uep *uep;
914 struct device *dev = usbhs_priv_to_dev(priv);
915 int pipe_size = usbhs_get_dparam(priv, pipe_size);
919 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
921 dev_err(dev, "Could not allocate gadget priv\n");
925 uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
927 dev_err(dev, "Could not allocate ep\n");
929 goto usbhs_mod_gadget_probe_err_gpriv;
935 * There is no guarantee that it is possible to access usb module here.
936 * Don't accesses to it.
937 * The accesse will be enable after "usbhsg_start"
943 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
946 gpriv->mod.name = "gadget";
947 gpriv->mod.start = usbhsg_start;
948 gpriv->mod.stop = usbhsg_stop;
950 gpriv->uep_size = pipe_size;
951 usbhsg_status_init(gpriv);
956 dev_set_name(&gpriv->gadget.dev, "gadget");
957 gpriv->gadget.dev.parent = dev;
958 gpriv->gadget.dev.release = usbhs_mod_gadget_release;
959 gpriv->gadget.name = "renesas_usbhs_udc";
960 gpriv->gadget.ops = &usbhsg_gadget_ops;
961 gpriv->gadget.max_speed = USB_SPEED_HIGH;
962 ret = device_register(&gpriv->gadget.dev);
966 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
971 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
973 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
975 uep->ep.name = uep->ep_name;
976 uep->ep.ops = &usbhsg_ep_ops;
977 INIT_LIST_HEAD(&uep->ep.ep_list);
980 if (usbhsg_is_dcp(uep)) {
981 gpriv->gadget.ep0 = &uep->ep;
982 uep->ep.maxpacket = 64;
984 /* init normal pipe */
986 uep->ep.maxpacket = 512;
987 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
991 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
996 dev_info(dev, "gadget probed\n");
1001 device_unregister(&gpriv->gadget.dev);
1005 usbhs_mod_gadget_probe_err_gpriv:
1011 void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
1013 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1015 usb_del_gadget_udc(&gpriv->gadget);
1017 device_unregister(&gpriv->gadget.dev);