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)
58 #define USBHSG_STATUS_SELF_POWERED (1 << 3)
61 struct usbhsg_recip_handle {
63 int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
64 struct usb_ctrlrequest *ctrl);
65 int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
66 struct usb_ctrlrequest *ctrl);
67 int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
68 struct usb_ctrlrequest *ctrl);
74 #define usbhsg_priv_to_gpriv(priv) \
76 usbhs_mod_get(priv, USBHS_GADGET), \
77 struct usbhsg_gpriv, mod)
79 #define __usbhsg_for_each_uep(start, pos, g, i) \
80 for (i = start, pos = (g)->uep + i; \
82 i++, pos = (g)->uep + i)
84 #define usbhsg_for_each_uep(pos, gpriv, i) \
85 __usbhsg_for_each_uep(1, pos, gpriv, i)
87 #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \
88 __usbhsg_for_each_uep(0, pos, gpriv, i)
90 #define usbhsg_gadget_to_gpriv(g)\
91 container_of(g, struct usbhsg_gpriv, gadget)
93 #define usbhsg_req_to_ureq(r)\
94 container_of(r, struct usbhsg_request, req)
96 #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep)
97 #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv)
98 #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv)
99 #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep)
100 #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i)
101 #define usbhsg_uep_to_gpriv(u) ((u)->gpriv)
102 #define usbhsg_uep_to_pipe(u) ((u)->pipe)
103 #define usbhsg_pipe_to_uep(p) ((p)->mod_private)
104 #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
106 #define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
107 #define usbhsg_pkt_to_ureq(i) \
108 container_of(i, struct usbhsg_request, pkt)
110 #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
113 #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0)
114 #define usbhsg_status_set(gp, b) (gp->status |= b)
115 #define usbhsg_status_clr(gp, b) (gp->status &= ~b)
116 #define usbhsg_status_has(gp, b) (gp->status & b)
121 static void usbhsg_queue_pop(struct usbhsg_uep *uep,
122 struct usbhsg_request *ureq,
125 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
126 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
127 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
129 dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
131 ureq->req.status = status;
132 ureq->req.complete(&uep->ep, &ureq->req);
135 static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
137 struct usbhs_pipe *pipe = pkt->pipe;
138 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
139 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
141 ureq->req.actual = pkt->actual;
143 usbhsg_queue_pop(uep, ureq, 0);
146 static void usbhsg_queue_push(struct usbhsg_uep *uep,
147 struct usbhsg_request *ureq)
149 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
150 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
151 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
152 struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
153 struct usb_request *req = &ureq->req;
156 req->status = -EINPROGRESS;
157 usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
158 req->buf, req->length, req->zero, -1);
159 usbhs_pkt_start(pipe);
161 dev_dbg(dev, "pipe %d : queue push (%d)\n",
162 usbhs_pipe_number(pipe),
169 static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
171 struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
172 struct usb_request *req = &ureq->req;
173 struct usbhs_pipe *pipe = pkt->pipe;
174 struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
175 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
176 enum dma_data_direction dir;
179 dir = usbhs_pipe_is_dir_host(pipe);
182 /* it can not use scatter/gather */
183 WARN_ON(req->num_sgs);
185 ret = usb_gadget_map_request(&gpriv->gadget, req, dir);
191 usb_gadget_unmap_request(&gpriv->gadget, req, dir);
198 * USB_TYPE_STANDARD / clear feature functions
200 static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
201 struct usbhsg_uep *uep,
202 struct usb_ctrlrequest *ctrl)
204 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
205 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
206 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
208 usbhs_dcp_control_transfer_done(pipe);
213 static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
214 struct usbhsg_uep *uep,
215 struct usb_ctrlrequest *ctrl)
217 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
218 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
220 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
221 usbhs_pipe_disable(pipe);
222 usbhs_pipe_sequence_data0(pipe);
223 usbhs_pipe_enable(pipe);
226 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
228 usbhs_pkt_start(pipe);
233 struct usbhsg_recip_handle req_clear_feature = {
234 .name = "clear feature",
235 .device = usbhsg_recip_handler_std_control_done,
236 .interface = usbhsg_recip_handler_std_control_done,
237 .endpoint = usbhsg_recip_handler_std_clear_endpoint,
241 * USB_TYPE_STANDARD / set feature functions
243 static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv,
244 struct usbhsg_uep *uep,
245 struct usb_ctrlrequest *ctrl)
247 switch (le16_to_cpu(ctrl->wValue)) {
248 case USB_DEVICE_TEST_MODE:
249 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
251 usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex >> 8));
254 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
261 static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv,
262 struct usbhsg_uep *uep,
263 struct usb_ctrlrequest *ctrl)
265 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
267 usbhs_pipe_stall(pipe);
269 usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
274 struct usbhsg_recip_handle req_set_feature = {
275 .name = "set feature",
276 .device = usbhsg_recip_handler_std_set_device,
277 .interface = usbhsg_recip_handler_std_control_done,
278 .endpoint = usbhsg_recip_handler_std_set_endpoint,
282 * USB_TYPE_STANDARD / get status functions
284 static void __usbhsg_recip_send_complete(struct usb_ep *ep,
285 struct usb_request *req)
287 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
289 /* free allocated recip-buffer/usb_request */
290 kfree(ureq->pkt.buf);
291 usb_ep_free_request(ep, req);
294 static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv,
295 unsigned short status)
297 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
298 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
299 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
300 struct usb_request *req;
303 /* alloc new usb_request for recip */
304 req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC);
306 dev_err(dev, "recip request allocation fail\n");
310 /* alloc recip data buffer */
311 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
313 usb_ep_free_request(&dcp->ep, req);
314 dev_err(dev, "recip data allocation fail\n");
318 /* recip data is status */
319 *buf = cpu_to_le16(status);
321 /* allocated usb_request/buffer will be freed */
322 req->complete = __usbhsg_recip_send_complete;
324 req->length = sizeof(*buf);
328 pipe->handler = &usbhs_fifo_pio_push_handler;
329 usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
332 static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv,
333 struct usbhsg_uep *uep,
334 struct usb_ctrlrequest *ctrl)
336 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
337 unsigned short status = 0;
339 if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED))
340 status = 1 << USB_DEVICE_SELF_POWERED;
342 __usbhsg_recip_send_status(gpriv, status);
347 static int usbhsg_recip_handler_std_get_interface(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 __usbhsg_recip_send_status(gpriv, status);
359 static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv,
360 struct usbhsg_uep *uep,
361 struct usb_ctrlrequest *ctrl)
363 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
364 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
365 unsigned short status = 0;
367 if (usbhs_pipe_is_stall(pipe))
368 status = 1 << USB_ENDPOINT_HALT;
370 __usbhsg_recip_send_status(gpriv, status);
375 struct usbhsg_recip_handle req_get_status = {
376 .name = "get status",
377 .device = usbhsg_recip_handler_std_get_device,
378 .interface = usbhsg_recip_handler_std_get_interface,
379 .endpoint = usbhsg_recip_handler_std_get_endpoint,
385 static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
386 struct usbhsg_recip_handle *handler,
387 struct usb_ctrlrequest *ctrl)
389 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
390 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
391 struct usbhsg_uep *uep;
392 struct usbhs_pipe *pipe;
393 int recip = ctrl->bRequestType & USB_RECIP_MASK;
394 int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
396 int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
397 struct usb_ctrlrequest *ctrl);
400 uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
401 pipe = usbhsg_uep_to_pipe(uep);
403 dev_err(dev, "wrong recip request\n");
408 case USB_RECIP_DEVICE:
410 func = handler->device;
412 case USB_RECIP_INTERFACE:
414 func = handler->interface;
416 case USB_RECIP_ENDPOINT:
418 func = handler->endpoint;
421 dev_warn(dev, "unsupported RECIP(%d)\n", recip);
427 dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
428 ret = func(priv, uep, ctrl);
437 * it will be called from usbhs_interrupt
439 static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
440 struct usbhs_irq_state *irq_state)
442 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
443 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
445 gpriv->gadget.speed = usbhs_bus_get_speed(priv);
447 dev_dbg(dev, "state = %x : speed : %d\n",
448 usbhs_status_get_device_state(irq_state),
449 gpriv->gadget.speed);
454 static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
455 struct usbhs_irq_state *irq_state)
457 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
458 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
459 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
460 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
461 struct usb_ctrlrequest ctrl;
462 struct usbhsg_recip_handle *recip_handler = NULL;
463 int stage = usbhs_status_get_ctrl_stage(irq_state);
466 dev_dbg(dev, "stage = %d\n", stage);
472 * - "Interrupt Function"
473 * - "Control Transfer Stage Transition Interrupt"
474 * - Fig. "Control Transfer Stage Transitions"
478 case READ_DATA_STAGE:
479 pipe->handler = &usbhs_fifo_pio_push_handler;
481 case WRITE_DATA_STAGE:
482 pipe->handler = &usbhs_fifo_pio_pop_handler;
484 case NODATA_STATUS_STAGE:
485 pipe->handler = &usbhs_ctrl_stage_end_handler;
494 usbhs_usbreq_get_val(priv, &ctrl);
496 switch (ctrl.bRequestType & USB_TYPE_MASK) {
497 case USB_TYPE_STANDARD:
498 switch (ctrl.bRequest) {
499 case USB_REQ_CLEAR_FEATURE:
500 recip_handler = &req_clear_feature;
502 case USB_REQ_SET_FEATURE:
503 recip_handler = &req_set_feature;
505 case USB_REQ_GET_STATUS:
506 recip_handler = &req_get_status;
512 * setup stage / run recip
515 ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl);
517 ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
520 usbhs_pipe_stall(pipe);
530 static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
532 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
533 struct usbhs_pkt *pkt;
536 pkt = usbhs_pkt_pop(pipe, NULL);
540 usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ECONNRESET);
543 usbhs_pipe_disable(pipe);
548 static void usbhsg_uep_init(struct usbhsg_gpriv *gpriv)
551 struct usbhsg_uep *uep;
553 usbhsg_for_each_uep_with_dcp(uep, gpriv, i)
562 static int usbhsg_ep_enable(struct usb_ep *ep,
563 const struct usb_endpoint_descriptor *desc)
565 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
566 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
567 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
568 struct usbhs_pipe *pipe;
572 * if it already have pipe,
576 usbhs_pipe_clear(uep->pipe);
577 usbhs_pipe_sequence_data0(uep->pipe);
581 pipe = usbhs_pipe_malloc(priv,
582 usb_endpoint_type(desc),
583 usb_endpoint_dir_in(desc));
586 pipe->mod_private = uep;
588 /* set epnum / maxp */
589 usbhs_pipe_config_update(pipe, 0,
590 usb_endpoint_num(desc),
591 usb_endpoint_maxp(desc));
594 * usbhs_fifo_dma_push/pop_handler try to
595 * use dmaengine if possible.
596 * It will use pio handler if impossible.
598 if (usb_endpoint_dir_in(desc))
599 pipe->handler = &usbhs_fifo_dma_push_handler;
601 pipe->handler = &usbhs_fifo_dma_pop_handler;
609 static int usbhsg_ep_disable(struct usb_ep *ep)
611 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
613 return usbhsg_pipe_disable(uep);
616 static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
619 struct usbhsg_request *ureq;
621 ureq = kzalloc(sizeof *ureq, gfp_flags);
625 usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
630 static void usbhsg_ep_free_request(struct usb_ep *ep,
631 struct usb_request *req)
633 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
635 WARN_ON(!list_empty(&ureq->pkt.node));
639 static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
642 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
643 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
644 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
645 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
648 if (usbhsg_is_not_connected(gpriv) ||
649 unlikely(!gpriv->driver) ||
653 usbhsg_queue_push(uep, ureq);
658 static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
660 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
661 struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
662 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
664 usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
665 usbhsg_queue_pop(uep, ureq, -ECONNRESET);
670 static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
672 struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
673 struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
674 struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
675 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
676 struct device *dev = usbhsg_gpriv_to_dev(gpriv);
679 usbhsg_pipe_disable(uep);
681 dev_dbg(dev, "set halt %d (pipe %d)\n",
682 halt, usbhs_pipe_number(pipe));
684 /******************** spin lock ********************/
685 usbhs_lock(priv, flags);
688 usbhs_pipe_stall(pipe);
690 usbhs_pipe_disable(pipe);
693 usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
695 usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
697 usbhs_unlock(priv, flags);
698 /******************** spin unlock ******************/
703 static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
705 return __usbhsg_ep_set_halt_wedge(ep, value, 0);
708 static int usbhsg_ep_set_wedge(struct usb_ep *ep)
710 return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
713 static struct usb_ep_ops usbhsg_ep_ops = {
714 .enable = usbhsg_ep_enable,
715 .disable = usbhsg_ep_disable,
717 .alloc_request = usbhsg_ep_alloc_request,
718 .free_request = usbhsg_ep_free_request,
720 .queue = usbhsg_ep_queue,
721 .dequeue = usbhsg_ep_dequeue,
723 .set_halt = usbhsg_ep_set_halt,
724 .set_wedge = usbhsg_ep_set_wedge,
728 * usb module start/end
730 static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
732 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
733 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
734 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
735 struct device *dev = usbhs_priv_to_dev(priv);
739 /******************** spin lock ********************/
740 usbhs_lock(priv, flags);
742 usbhsg_status_set(gpriv, status);
743 if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
744 usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
745 ret = -1; /* not ready */
747 usbhs_unlock(priv, flags);
748 /******************** spin unlock ********************/
751 return 0; /* not ready is not error */
754 * enable interrupt and systems if ready
756 dev_dbg(dev, "start gadget\n");
759 * pipe initialize and enable DCP
761 usbhs_pipe_init(priv,
762 usbhsg_dma_map_ctrl);
763 usbhs_fifo_init(priv);
764 usbhsg_uep_init(gpriv);
767 dcp->pipe = usbhs_dcp_malloc(priv);
768 dcp->pipe->mod_private = dcp;
769 usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
772 * system config enble
777 usbhs_sys_function_ctrl(priv, 1);
780 * enable irq callback
782 mod->irq_dev_state = usbhsg_irq_dev_state;
783 mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
784 usbhs_irq_callback_update(priv, mod);
789 static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
791 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
792 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
793 struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
794 struct device *dev = usbhs_priv_to_dev(priv);
798 /******************** spin lock ********************/
799 usbhs_lock(priv, flags);
801 usbhsg_status_clr(gpriv, status);
802 if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
803 !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
804 ret = -1; /* already done */
806 usbhs_unlock(priv, flags);
807 /******************** spin unlock ********************/
810 return 0; /* already done is not error */
813 * disable interrupt and systems if 1st try
815 usbhs_fifo_quit(priv);
817 /* disable all irq */
818 mod->irq_dev_state = NULL;
819 mod->irq_ctrl_stage = NULL;
820 usbhs_irq_callback_update(priv, mod);
822 gpriv->gadget.speed = USB_SPEED_UNKNOWN;
825 usbhs_sys_set_test_mode(priv, 0);
826 usbhs_sys_function_ctrl(priv, 0);
828 usbhsg_pipe_disable(dcp);
830 dev_dbg(dev, "stop gadget\n");
840 static int usbhsg_gadget_start(struct usb_gadget *gadget,
841 struct usb_gadget_driver *driver)
843 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
844 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
848 driver->max_speed < USB_SPEED_FULL)
851 /* first hook up the driver ... */
852 gpriv->driver = driver;
853 gpriv->gadget.dev.driver = &driver->driver;
855 return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
858 static int usbhsg_gadget_stop(struct usb_gadget *gadget,
859 struct usb_gadget_driver *driver)
861 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
862 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
868 usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
869 gpriv->gadget.dev.driver = NULL;
870 gpriv->driver = NULL;
878 static int usbhsg_get_frame(struct usb_gadget *gadget)
880 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
881 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
883 return usbhs_frame_get_num(priv);
886 static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
888 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
889 struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
891 usbhs_sys_function_pullup(priv, is_on);
896 static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
898 struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
901 usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
903 usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
908 static struct usb_gadget_ops usbhsg_gadget_ops = {
909 .get_frame = usbhsg_get_frame,
910 .set_selfpowered = usbhsg_set_selfpowered,
911 .udc_start = usbhsg_gadget_start,
912 .udc_stop = usbhsg_gadget_stop,
913 .pullup = usbhsg_pullup,
916 static int usbhsg_start(struct usbhs_priv *priv)
918 return usbhsg_try_start(priv, USBHSG_STATUS_STARTED);
921 static int usbhsg_stop(struct usbhs_priv *priv)
923 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
925 /* cable disconnect */
927 gpriv->driver->disconnect)
928 gpriv->driver->disconnect(&gpriv->gadget);
930 return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
933 static void usbhs_mod_gadget_release(struct device *pdev)
938 int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
940 struct usbhsg_gpriv *gpriv;
941 struct usbhsg_uep *uep;
942 struct device *dev = usbhs_priv_to_dev(priv);
943 int pipe_size = usbhs_get_dparam(priv, pipe_size);
947 gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
949 dev_err(dev, "Could not allocate gadget priv\n");
953 uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
955 dev_err(dev, "Could not allocate ep\n");
957 goto usbhs_mod_gadget_probe_err_gpriv;
963 * There is no guarantee that it is possible to access usb module here.
964 * Don't accesses to it.
965 * The accesse will be enable after "usbhsg_start"
971 usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
974 gpriv->mod.name = "gadget";
975 gpriv->mod.start = usbhsg_start;
976 gpriv->mod.stop = usbhsg_stop;
978 gpriv->uep_size = pipe_size;
979 usbhsg_status_init(gpriv);
984 dev_set_name(&gpriv->gadget.dev, "gadget");
985 gpriv->gadget.dev.parent = dev;
986 gpriv->gadget.dev.release = usbhs_mod_gadget_release;
987 gpriv->gadget.name = "renesas_usbhs_udc";
988 gpriv->gadget.ops = &usbhsg_gadget_ops;
989 gpriv->gadget.max_speed = USB_SPEED_HIGH;
990 ret = device_register(&gpriv->gadget.dev);
994 INIT_LIST_HEAD(&gpriv->gadget.ep_list);
999 usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
1001 snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
1003 uep->ep.name = uep->ep_name;
1004 uep->ep.ops = &usbhsg_ep_ops;
1005 INIT_LIST_HEAD(&uep->ep.ep_list);
1008 if (usbhsg_is_dcp(uep)) {
1009 gpriv->gadget.ep0 = &uep->ep;
1010 uep->ep.maxpacket = 64;
1012 /* init normal pipe */
1014 uep->ep.maxpacket = 512;
1015 list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
1019 ret = usb_add_gadget_udc(dev, &gpriv->gadget);
1024 dev_info(dev, "gadget probed\n");
1029 device_unregister(&gpriv->gadget.dev);
1033 usbhs_mod_gadget_probe_err_gpriv:
1039 void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
1041 struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
1043 usb_del_gadget_udc(&gpriv->gadget);
1045 device_unregister(&gpriv->gadget.dev);