usb/mtu3/mtu3_gadget.c

15 __releases(mep->mtu->lock)
16 __acquires(mep->mtu->lock)
19 	struct mtu3 *mtu = mreq->mtu;
29 		usb_gadget_unmap_request(&mtu->g, req, mep->is_in);
31 	dev_dbg(mtu->dev, "%s complete req: %p, sts %d, %d/%d\n",
34 	spin_unlock(&mtu->lock);
36 	spin_lock(&mtu->lock);
46 	dev_dbg(mep->mtu->dev, "abort %s's req: sts %d\n", mep->name, status);
63 	struct mtu3 *mtu = mep->mtu;
74 	switch (mtu->g.speed) {
107 	dev_dbg(mtu->dev, "%s maxp:%d, interval:%d, burst:%d, mult:%d\n",
115 	mep->slot = usb_endpoint_xfer_int(desc) ? 0 : mtu->slot;
117 	ret = mtu3_config_ep(mtu, mep, interval, burst, mult);
123 		mtu3_deconfig_ep(mtu, mep);
134 	struct mtu3 *mtu = mep->mtu;
139 	mtu3_deconfig_ep(mtu, mep);
155 	struct mtu3 *mtu;
169 	mtu = mep->mtu;
178 	dev_dbg(mtu->dev, "%s %s\n", __func__, ep->name);
181 		dev_WARN_ONCE(mtu->dev, true, "%s is already enabled\n",
186 	spin_lock_irqsave(&mtu->lock, flags);
195 	mtu->active_ep++;
198 	spin_unlock_irqrestore(&mtu->lock, flags);
200 	dev_dbg(mtu->dev, "%s active_ep=%d\n", __func__, mtu->active_ep);
209 	struct mtu3 *mtu = mep->mtu;
212 	dev_dbg(mtu->dev, "%s %s\n", __func__, mep->name);
216 		dev_warn(mtu->dev, "%s is already disabled\n", mep->name);
220 	spin_lock_irqsave(&mtu->lock, flags);
223 	mtu->active_ep--;
224 	spin_unlock_irqrestore(&(mtu->lock), flags);
226 	dev_dbg(mtu->dev, "%s active_ep=%d, mtu3 is_active=%d\n",
227 		__func__, mtu->active_ep, mtu->is_active);
263 	struct mtu3 *mtu = mep->mtu;
273 	dev_dbg(mtu->dev, "%s %s EP%d(%s), req=%p, maxp=%d, len#%d\n",
278 	    (mtu->gen2cp && req->length > GPD_BUF_SIZE_EL)) {
279 		dev_warn(mtu->dev,
281 			mtu->gen2cp ? GPD_BUF_SIZE_EL : GPD_BUF_SIZE,
288 		dev_dbg(mtu->dev, "req=%p queued to %s while it's disabled\n",
293 	mreq->mtu = mtu;
297 	ret = usb_gadget_map_request(&mtu->g, req, mep->is_in);
299 		dev_err(mtu->dev, "dma mapping failed\n");
303 	spin_lock_irqsave(&mtu->lock, flags);
315 	spin_unlock_irqrestore(&mtu->lock, flags);
326 	struct mtu3 *mtu = mep->mtu;
333 	dev_dbg(mtu->dev, "%s : req=%p\n", __func__, req);
336 	spin_lock_irqsave(&mtu->lock, flags);
343 		dev_dbg(mtu->dev, "req=%p not queued to %s\n", req, ep->name);
353 	spin_unlock_irqrestore(&mtu->lock, flags);
365 	struct mtu3 *mtu = mep->mtu;
370 	dev_dbg(mtu->dev, "%s : %s...", __func__, ep->name);
372 	spin_lock_irqsave(&mtu->lock, flags);
387 			dev_dbg(mtu->dev, "req in progress, cannot halt %s\n",
396 	dev_dbg(mtu->dev, "%s %s stall\n", ep->name, value ? "set" : "clear");
401 	spin_unlock_irqrestore(&mtu->lock, flags);
430 	struct mtu3 *mtu = gadget_to_mtu3(gadget);
432 	return (int)mtu3_readl(mtu->mac_base, U3D_USB20_FRAME_NUM);
435 static void function_wake_notif(struct mtu3 *mtu, u8 intf)
437 	mtu3_writel(mtu->mac_base, U3D_DEV_NOTIF_0,
439 	mtu3_setbits(mtu->mac_base, U3D_DEV_NOTIF_0, SEND_DEV_NOTIF);
444 	struct mtu3 *mtu = gadget_to_mtu3(gadget);
447 	dev_dbg(mtu->dev, "%s\n", __func__);
450 	if (!mtu->may_wakeup)
453 	spin_lock_irqsave(&mtu->lock, flags);
454 	if (mtu->g.speed >= USB_SPEED_SUPER) {
459 		mtu3_setbits(mtu->mac_base, U3D_LINK_POWER_CONTROL, UX_EXIT);
466 		function_wake_notif(mtu, 0);
468 		mtu3_setbits(mtu->mac_base, U3D_POWER_MANAGEMENT, RESUME);
469 		spin_unlock_irqrestore(&mtu->lock, flags);
471 		spin_lock_irqsave(&mtu->lock, flags);
472 		mtu3_clrbits(mtu->mac_base, U3D_POWER_MANAGEMENT, RESUME);
474 	spin_unlock_irqrestore(&mtu->lock, flags);
481 	struct mtu3 *mtu = gadget_to_mtu3(gadget);
483 	mtu->is_self_powered = !!is_selfpowered;
489 	struct mtu3 *mtu = gadget_to_mtu3(gadget);
492 	dev_dbg(mtu->dev, "%s (%s) for %sactive device\n", __func__,
493 		is_on ? "on" : "off", mtu->is_active ? "" : "in");
495 	pm_runtime_get_sync(mtu->dev);
498 	spin_lock_irqsave(&mtu->lock, flags);
501 	if (!mtu->is_active) {
503 		mtu->softconnect = is_on;
504 	} else if (is_on != mtu->softconnect) {
505 		mtu->softconnect = is_on;
506 		mtu3_dev_on_off(mtu, is_on);
509 	spin_unlock_irqrestore(&mtu->lock, flags);
510 	pm_runtime_put(mtu->dev);
518 	struct mtu3 *mtu = gadget_to_mtu3(gadget);
521 	if (mtu->gadget_driver) {
522 		dev_err(mtu->dev, "%s is already bound to %s\n",
523 			mtu->g.name, mtu->gadget_driver->driver.name);
527 	dev_dbg(mtu->dev, "bind driver %s\n", driver->function);
528 	pm_runtime_get_sync(mtu->dev);
530 	spin_lock_irqsave(&mtu->lock, flags);
532 	mtu->softconnect = 0;
533 	mtu->gadget_driver = driver;
535 	if (mtu->ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)
536 		mtu3_start(mtu);
538 	spin_unlock_irqrestore(&mtu->lock, flags);
539 	pm_runtime_put(mtu->dev);
544 static void stop_activity(struct mtu3 *mtu)
546 	struct usb_gadget_driver *driver = mtu->gadget_driver;
550 	if (mtu->g.speed == USB_SPEED_UNKNOWN)
553 		mtu->g.speed = USB_SPEED_UNKNOWN;
556 	if (mtu->softconnect) {
557 		mtu->softconnect = 0;
558 		mtu3_dev_on_off(mtu, 0);
565 	nuke(mtu->ep0, -ESHUTDOWN);
566 	for (i = 1; i < mtu->num_eps; i++) {
567 		nuke(mtu->in_eps + i, -ESHUTDOWN);
568 		nuke(mtu->out_eps + i, -ESHUTDOWN);
572 		spin_unlock(&mtu->lock);
573 		driver->disconnect(&mtu->g);
574 		spin_lock(&mtu->lock);
580 	struct mtu3 *mtu = gadget_to_mtu3(g);
583 	dev_dbg(mtu->dev, "%s\n", __func__);
585 	spin_lock_irqsave(&mtu->lock, flags);
587 	stop_activity(mtu);
588 	mtu->gadget_driver = NULL;
590 	if (mtu->ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)
591 		mtu3_stop(mtu);
593 	spin_unlock_irqrestore(&mtu->lock, flags);
595 	synchronize_irq(mtu->irq);
602 	struct mtu3 *mtu = gadget_to_mtu3(g);
605 	dev_dbg(mtu->dev, "%s %s\n", __func__, usb_speed_string(speed));
607 	spin_lock_irqsave(&mtu->lock, flags);
608 	mtu->speed = speed;
609 	spin_unlock_irqrestore(&mtu->lock, flags);
614 	struct mtu3 *mtu = gadget_to_mtu3(g);
617 	dev_dbg(mtu->dev, "%s %s\n", __func__, enable ? "en" : "dis");
619 	spin_lock_irqsave(&mtu->lock, flags);
620 	mtu->async_callbacks = enable;
621 	spin_unlock_irqrestore(&mtu->lock, flags);
635 static void mtu3_state_reset(struct mtu3 *mtu)
637 	mtu->address = 0;
638 	mtu->ep0_state = MU3D_EP0_STATE_SETUP;
639 	mtu->may_wakeup = 0;
640 	mtu->u1_enable = 0;
641 	mtu->u2_enable = 0;
642 	mtu->delayed_status = false;
643 	mtu->test_mode = false;
646 static void init_hw_ep(struct mtu3 *mtu, struct mtu3_ep *mep,
650 	mep->mtu = mtu;
666 		mtu->g.ep0 = &mep->ep;
673 		list_add_tail(&mep->ep.ep_list, &mtu->g.ep_list);
676 	dev_dbg(mtu->dev, "%s, name=%s, maxp=%d\n", __func__, mep->ep.name,
689 static void mtu3_gadget_init_eps(struct mtu3 *mtu)
694 	INIT_LIST_HEAD(&(mtu->g.ep_list));
696 	dev_dbg(mtu->dev, "%s num_eps(1 for a pair of tx&rx ep)=%d\n",
697 		__func__, mtu->num_eps);
699 	init_hw_ep(mtu, mtu->ep0, 0, 0);
700 	for (epnum = 1; epnum < mtu->num_eps; epnum++) {
701 		init_hw_ep(mtu, mtu->in_eps + epnum, epnum, 1);
702 		init_hw_ep(mtu, mtu->out_eps + epnum, epnum, 0);
706 int mtu3_gadget_setup(struct mtu3 *mtu)
708 	mtu->g.ops = &mtu3_gadget_ops;
709 	mtu->g.max_speed = mtu->max_speed;
710 	mtu->g.speed = USB_SPEED_UNKNOWN;
711 	mtu->g.sg_supported = 0;
712 	mtu->g.name = MTU3_DRIVER_NAME;
713 	mtu->g.irq = mtu->irq;
714 	mtu->is_active = 0;
715 	mtu->delayed_status = false;
717 	mtu3_gadget_init_eps(mtu);
719 	return usb_add_gadget_udc(mtu->dev, &mtu->g);
722 void mtu3_gadget_cleanup(struct mtu3 *mtu)
724 	usb_del_gadget_udc(&mtu->g);
727 void mtu3_gadget_resume(struct mtu3 *mtu)
729 	dev_dbg(mtu->dev, "gadget RESUME\n");
730 	if (mtu->async_callbacks && mtu->gadget_driver && mtu->gadget_driver->resume) {
731 		spin_unlock(&mtu->lock);
732 		mtu->gadget_driver->resume(&mtu->g);
733 		spin_lock(&mtu->lock);
738 void mtu3_gadget_suspend(struct mtu3 *mtu)
740 	dev_dbg(mtu->dev, "gadget SUSPEND\n");
741 	if (mtu->async_callbacks && mtu->gadget_driver && mtu->gadget_driver->suspend) {
742 		spin_unlock(&mtu->lock);
743 		mtu->gadget_driver->suspend(&mtu->g);
744 		spin_lock(&mtu->lock);
749 void mtu3_gadget_disconnect(struct mtu3 *mtu)
751 	dev_dbg(mtu->dev, "gadget DISCONNECT\n");
752 	if (mtu->async_callbacks && mtu->gadget_driver && mtu->gadget_driver->disconnect) {
753 		spin_unlock(&mtu->lock);
754 		mtu->gadget_driver->disconnect(&mtu->g);
755 		spin_lock(&mtu->lock);
758 	mtu3_state_reset(mtu);
759 	usb_gadget_set_state(&mtu->g, USB_STATE_NOTATTACHED);
762 void mtu3_gadget_reset(struct mtu3 *mtu)
764 	dev_dbg(mtu->dev, "gadget RESET\n");
767 	if (mtu->g.speed != USB_SPEED_UNKNOWN)
768 		mtu3_gadget_disconnect(mtu);
770 		mtu3_state_reset(mtu);