Lines Matching refs:mvotg
59 struct mv_otg *mvotg = container_of(otg->usb_phy, struct mv_otg, phy); in mv_otg_set_vbus() local
60 if (mvotg->pdata->set_vbus == NULL) in mv_otg_set_vbus()
63 return mvotg->pdata->set_vbus(on); in mv_otg_set_vbus()
82 static void mv_otg_run_state_machine(struct mv_otg *mvotg, in mv_otg_run_state_machine() argument
85 dev_dbg(&mvotg->pdev->dev, "transceiver is updated\n"); in mv_otg_run_state_machine()
86 if (!mvotg->qwork) in mv_otg_run_state_machine()
89 queue_delayed_work(mvotg->qwork, &mvotg->work, delay); in mv_otg_run_state_machine()
94 struct mv_otg *mvotg = (struct mv_otg *) data; in mv_otg_timer_await_bcon() local
96 mvotg->otg_ctrl.a_wait_bcon_timeout = 1; in mv_otg_timer_await_bcon()
98 dev_info(&mvotg->pdev->dev, "B Device No Response!\n"); in mv_otg_timer_await_bcon()
100 if (spin_trylock(&mvotg->wq_lock)) { in mv_otg_timer_await_bcon()
101 mv_otg_run_state_machine(mvotg, 0); in mv_otg_timer_await_bcon()
102 spin_unlock(&mvotg->wq_lock); in mv_otg_timer_await_bcon()
106 static int mv_otg_cancel_timer(struct mv_otg *mvotg, unsigned int id) in mv_otg_cancel_timer() argument
113 timer = &mvotg->otg_ctrl.timer[id]; in mv_otg_cancel_timer()
121 static int mv_otg_set_timer(struct mv_otg *mvotg, unsigned int id, in mv_otg_set_timer() argument
130 timer = &mvotg->otg_ctrl.timer[id]; in mv_otg_set_timer()
132 dev_err(&mvotg->pdev->dev, "Timer%d is already running\n", id); in mv_otg_set_timer()
137 timer->data = (unsigned long) mvotg; in mv_otg_set_timer()
145 static int mv_otg_reset(struct mv_otg *mvotg) in mv_otg_reset() argument
151 tmp = readl(&mvotg->op_regs->usbcmd); in mv_otg_reset()
153 writel(tmp, &mvotg->op_regs->usbcmd); in mv_otg_reset()
156 writel(USBCMD_CTRL_RESET, &mvotg->op_regs->usbcmd); in mv_otg_reset()
159 while (readl(&mvotg->op_regs->usbcmd) & USBCMD_CTRL_RESET) { in mv_otg_reset()
161 dev_err(&mvotg->pdev->dev, in mv_otg_reset()
169 writel(0x0, &mvotg->op_regs->usbintr); in mv_otg_reset()
170 tmp = readl(&mvotg->op_regs->usbsts); in mv_otg_reset()
171 writel(tmp, &mvotg->op_regs->usbsts); in mv_otg_reset()
176 static void mv_otg_init_irq(struct mv_otg *mvotg) in mv_otg_init_irq() argument
180 mvotg->irq_en = OTGSC_INTR_A_SESSION_VALID in mv_otg_init_irq()
182 mvotg->irq_status = OTGSC_INTSTS_A_SESSION_VALID in mv_otg_init_irq()
185 if (mvotg->pdata->vbus == NULL) { in mv_otg_init_irq()
186 mvotg->irq_en |= OTGSC_INTR_B_SESSION_VALID in mv_otg_init_irq()
188 mvotg->irq_status |= OTGSC_INTSTS_B_SESSION_VALID in mv_otg_init_irq()
192 if (mvotg->pdata->id == NULL) { in mv_otg_init_irq()
193 mvotg->irq_en |= OTGSC_INTR_USB_ID; in mv_otg_init_irq()
194 mvotg->irq_status |= OTGSC_INTSTS_USB_ID; in mv_otg_init_irq()
197 otgsc = readl(&mvotg->op_regs->otgsc); in mv_otg_init_irq()
198 otgsc |= mvotg->irq_en; in mv_otg_init_irq()
199 writel(otgsc, &mvotg->op_regs->otgsc); in mv_otg_init_irq()
202 static void mv_otg_start_host(struct mv_otg *mvotg, int on) in mv_otg_start_host() argument
205 struct usb_otg *otg = mvotg->phy.otg; in mv_otg_start_host()
211 dev_info(&mvotg->pdev->dev, "%s host\n", on ? "start" : "stop"); in mv_otg_start_host()
224 static void mv_otg_start_periphrals(struct mv_otg *mvotg, int on) in mv_otg_start_periphrals() argument
226 struct usb_otg *otg = mvotg->phy.otg; in mv_otg_start_periphrals()
231 dev_info(mvotg->phy.dev, "gadget %s\n", on ? "on" : "off"); in mv_otg_start_periphrals()
239 static void otg_clock_enable(struct mv_otg *mvotg) in otg_clock_enable() argument
241 clk_prepare_enable(mvotg->clk); in otg_clock_enable()
244 static void otg_clock_disable(struct mv_otg *mvotg) in otg_clock_disable() argument
246 clk_disable_unprepare(mvotg->clk); in otg_clock_disable()
249 static int mv_otg_enable_internal(struct mv_otg *mvotg) in mv_otg_enable_internal() argument
253 if (mvotg->active) in mv_otg_enable_internal()
256 dev_dbg(&mvotg->pdev->dev, "otg enabled\n"); in mv_otg_enable_internal()
258 otg_clock_enable(mvotg); in mv_otg_enable_internal()
259 if (mvotg->pdata->phy_init) { in mv_otg_enable_internal()
260 retval = mvotg->pdata->phy_init(mvotg->phy_regs); in mv_otg_enable_internal()
262 dev_err(&mvotg->pdev->dev, in mv_otg_enable_internal()
264 otg_clock_disable(mvotg); in mv_otg_enable_internal()
268 mvotg->active = 1; in mv_otg_enable_internal()
274 static int mv_otg_enable(struct mv_otg *mvotg) in mv_otg_enable() argument
276 if (mvotg->clock_gating) in mv_otg_enable()
277 return mv_otg_enable_internal(mvotg); in mv_otg_enable()
282 static void mv_otg_disable_internal(struct mv_otg *mvotg) in mv_otg_disable_internal() argument
284 if (mvotg->active) { in mv_otg_disable_internal()
285 dev_dbg(&mvotg->pdev->dev, "otg disabled\n"); in mv_otg_disable_internal()
286 if (mvotg->pdata->phy_deinit) in mv_otg_disable_internal()
287 mvotg->pdata->phy_deinit(mvotg->phy_regs); in mv_otg_disable_internal()
288 otg_clock_disable(mvotg); in mv_otg_disable_internal()
289 mvotg->active = 0; in mv_otg_disable_internal()
293 static void mv_otg_disable(struct mv_otg *mvotg) in mv_otg_disable() argument
295 if (mvotg->clock_gating) in mv_otg_disable()
296 mv_otg_disable_internal(mvotg); in mv_otg_disable()
299 static void mv_otg_update_inputs(struct mv_otg *mvotg) in mv_otg_update_inputs() argument
301 struct mv_otg_ctrl *otg_ctrl = &mvotg->otg_ctrl; in mv_otg_update_inputs()
304 otgsc = readl(&mvotg->op_regs->otgsc); in mv_otg_update_inputs()
306 if (mvotg->pdata->vbus) { in mv_otg_update_inputs()
307 if (mvotg->pdata->vbus->poll() == VBUS_HIGH) { in mv_otg_update_inputs()
319 if (mvotg->pdata->id) in mv_otg_update_inputs()
320 otg_ctrl->id = !!mvotg->pdata->id->poll(); in mv_otg_update_inputs()
324 if (mvotg->pdata->otg_force_a_bus_req && !otg_ctrl->id) in mv_otg_update_inputs()
330 dev_dbg(&mvotg->pdev->dev, "%s: ", __func__); in mv_otg_update_inputs()
331 dev_dbg(&mvotg->pdev->dev, "id %d\n", otg_ctrl->id); in mv_otg_update_inputs()
332 dev_dbg(&mvotg->pdev->dev, "b_sess_vld %d\n", otg_ctrl->b_sess_vld); in mv_otg_update_inputs()
333 dev_dbg(&mvotg->pdev->dev, "b_sess_end %d\n", otg_ctrl->b_sess_end); in mv_otg_update_inputs()
334 dev_dbg(&mvotg->pdev->dev, "a_vbus_vld %d\n", otg_ctrl->a_vbus_vld); in mv_otg_update_inputs()
335 dev_dbg(&mvotg->pdev->dev, "a_sess_vld %d\n", otg_ctrl->a_sess_vld); in mv_otg_update_inputs()
338 static void mv_otg_update_state(struct mv_otg *mvotg) in mv_otg_update_state() argument
340 struct mv_otg_ctrl *otg_ctrl = &mvotg->otg_ctrl; in mv_otg_update_state()
341 int old_state = mvotg->phy.otg->state; in mv_otg_update_state()
345 mvotg->phy.otg->state = OTG_STATE_B_IDLE; in mv_otg_update_state()
349 mvotg->phy.otg->state = OTG_STATE_A_IDLE; in mv_otg_update_state()
351 mvotg->phy.otg->state = OTG_STATE_B_PERIPHERAL; in mv_otg_update_state()
355 mvotg->phy.otg->state = OTG_STATE_B_IDLE; in mv_otg_update_state()
359 mvotg->phy.otg->state = OTG_STATE_B_IDLE; in mv_otg_update_state()
362 mvotg->phy.otg->state = OTG_STATE_A_WAIT_VRISE; in mv_otg_update_state()
366 mvotg->phy.otg->state = OTG_STATE_A_WAIT_BCON; in mv_otg_update_state()
371 mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER); in mv_otg_update_state()
372 mvotg->otg_ctrl.a_wait_bcon_timeout = 0; in mv_otg_update_state()
373 mvotg->phy.otg->state = OTG_STATE_A_WAIT_VFALL; in mv_otg_update_state()
376 mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER); in mv_otg_update_state()
377 mvotg->otg_ctrl.a_wait_bcon_timeout = 0; in mv_otg_update_state()
378 mvotg->phy.otg->state = OTG_STATE_A_VBUS_ERR; in mv_otg_update_state()
380 mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER); in mv_otg_update_state()
381 mvotg->otg_ctrl.a_wait_bcon_timeout = 0; in mv_otg_update_state()
382 mvotg->phy.otg->state = OTG_STATE_A_HOST; in mv_otg_update_state()
388 mvotg->phy.otg->state = OTG_STATE_A_WAIT_BCON; in mv_otg_update_state()
390 mvotg->phy.otg->state = OTG_STATE_A_VBUS_ERR; in mv_otg_update_state()
396 mvotg->phy.otg->state = OTG_STATE_A_IDLE; in mv_otg_update_state()
402 mvotg->phy.otg->state = OTG_STATE_A_WAIT_VFALL; in mv_otg_update_state()
412 struct mv_otg *mvotg; in mv_otg_work() local
417 mvotg = container_of(to_delayed_work(work), struct mv_otg, work); in mv_otg_work()
421 phy = &mvotg->phy; in mv_otg_work()
422 otg = mvotg->phy.otg; in mv_otg_work()
425 if (!mvotg->active) in mv_otg_work()
428 mv_otg_update_inputs(mvotg); in mv_otg_work()
429 mv_otg_update_state(mvotg); in mv_otg_work()
431 if (old_state != mvotg->phy.otg->state) { in mv_otg_work()
432 dev_info(&mvotg->pdev->dev, "change from state %s to %s\n", in mv_otg_work()
434 state_string[mvotg->phy.otg->state]); in mv_otg_work()
436 switch (mvotg->phy.otg->state) { in mv_otg_work()
440 mv_otg_start_periphrals(mvotg, 0); in mv_otg_work()
441 mv_otg_reset(mvotg); in mv_otg_work()
442 mv_otg_disable(mvotg); in mv_otg_work()
443 usb_phy_set_event(&mvotg->phy, USB_EVENT_NONE); in mv_otg_work()
446 mv_otg_enable(mvotg); in mv_otg_work()
447 mv_otg_start_periphrals(mvotg, 1); in mv_otg_work()
448 usb_phy_set_event(&mvotg->phy, USB_EVENT_ENUMERATED); in mv_otg_work()
452 mv_otg_enable(mvotg); in mv_otg_work()
454 mv_otg_start_host(mvotg, 0); in mv_otg_work()
455 mv_otg_reset(mvotg); in mv_otg_work()
462 mv_otg_start_host(mvotg, 1); in mv_otg_work()
463 mv_otg_set_timer(mvotg, A_WAIT_BCON_TIMER, in mv_otg_work()
470 mvotg->otg_ctrl.b_conn = 1; in mv_otg_work()
479 mvotg->otg_ctrl.b_conn = 0; in mv_otg_work()
493 struct mv_otg *mvotg = dev; in mv_otg_irq() local
496 otgsc = readl(&mvotg->op_regs->otgsc); in mv_otg_irq()
497 writel(otgsc, &mvotg->op_regs->otgsc); in mv_otg_irq()
503 if (mvotg->pdata->vbus) in mv_otg_irq()
508 if ((otgsc & mvotg->irq_status) == 0) in mv_otg_irq()
511 mv_otg_run_state_machine(mvotg, 0); in mv_otg_irq()
518 struct mv_otg *mvotg = dev; in mv_otg_inputs_irq() local
521 if (!mvotg->active) { in mv_otg_inputs_irq()
522 mv_otg_enable(mvotg); in mv_otg_inputs_irq()
523 mv_otg_init_irq(mvotg); in mv_otg_inputs_irq()
526 mv_otg_run_state_machine(mvotg, 0); in mv_otg_inputs_irq()
534 struct mv_otg *mvotg = dev_get_drvdata(dev); in get_a_bus_req() local
536 mvotg->otg_ctrl.a_bus_req); in get_a_bus_req()
543 struct mv_otg *mvotg = dev_get_drvdata(dev); in set_a_bus_req() local
549 if (mvotg->phy.otg->state != OTG_STATE_B_IDLE in set_a_bus_req()
550 && mvotg->phy.otg->state != OTG_STATE_A_IDLE) in set_a_bus_req()
554 mv_otg_enable(mvotg); in set_a_bus_req()
555 mv_otg_init_irq(mvotg); in set_a_bus_req()
558 mvotg->otg_ctrl.a_bus_req = 1; in set_a_bus_req()
559 mvotg->otg_ctrl.a_bus_drop = 0; in set_a_bus_req()
560 dev_dbg(&mvotg->pdev->dev, in set_a_bus_req()
563 if (spin_trylock(&mvotg->wq_lock)) { in set_a_bus_req()
564 mv_otg_run_state_machine(mvotg, 0); in set_a_bus_req()
565 spin_unlock(&mvotg->wq_lock); in set_a_bus_req()
579 struct mv_otg *mvotg = dev_get_drvdata(dev); in set_a_clr_err() local
580 if (!mvotg->phy.otg->default_a) in set_a_clr_err()
587 mvotg->otg_ctrl.a_clr_err = 1; in set_a_clr_err()
588 dev_dbg(&mvotg->pdev->dev, in set_a_clr_err()
592 if (spin_trylock(&mvotg->wq_lock)) { in set_a_clr_err()
593 mv_otg_run_state_machine(mvotg, 0); in set_a_clr_err()
594 spin_unlock(&mvotg->wq_lock); in set_a_clr_err()
606 struct mv_otg *mvotg = dev_get_drvdata(dev); in get_a_bus_drop() local
608 mvotg->otg_ctrl.a_bus_drop); in get_a_bus_drop()
615 struct mv_otg *mvotg = dev_get_drvdata(dev); in set_a_bus_drop() local
616 if (!mvotg->phy.otg->default_a) in set_a_bus_drop()
623 mvotg->otg_ctrl.a_bus_drop = 0; in set_a_bus_drop()
624 dev_dbg(&mvotg->pdev->dev, in set_a_bus_drop()
627 mvotg->otg_ctrl.a_bus_drop = 1; in set_a_bus_drop()
628 mvotg->otg_ctrl.a_bus_req = 0; in set_a_bus_drop()
629 dev_dbg(&mvotg->pdev->dev, in set_a_bus_drop()
631 dev_dbg(&mvotg->pdev->dev, in set_a_bus_drop()
635 if (spin_trylock(&mvotg->wq_lock)) { in set_a_bus_drop()
636 mv_otg_run_state_machine(mvotg, 0); in set_a_bus_drop()
637 spin_unlock(&mvotg->wq_lock); in set_a_bus_drop()
660 struct mv_otg *mvotg = platform_get_drvdata(pdev); in mv_otg_remove() local
662 sysfs_remove_group(&mvotg->pdev->dev.kobj, &inputs_attr_group); in mv_otg_remove()
664 if (mvotg->qwork) { in mv_otg_remove()
665 flush_workqueue(mvotg->qwork); in mv_otg_remove()
666 destroy_workqueue(mvotg->qwork); in mv_otg_remove()
669 mv_otg_disable(mvotg); in mv_otg_remove()
671 usb_remove_phy(&mvotg->phy); in mv_otg_remove()
679 struct mv_otg *mvotg; in mv_otg_probe() local
689 mvotg = devm_kzalloc(&pdev->dev, sizeof(*mvotg), GFP_KERNEL); in mv_otg_probe()
690 if (!mvotg) in mv_otg_probe()
697 platform_set_drvdata(pdev, mvotg); in mv_otg_probe()
699 mvotg->pdev = pdev; in mv_otg_probe()
700 mvotg->pdata = pdata; in mv_otg_probe()
702 mvotg->clk = devm_clk_get(&pdev->dev, NULL); in mv_otg_probe()
703 if (IS_ERR(mvotg->clk)) in mv_otg_probe()
704 return PTR_ERR(mvotg->clk); in mv_otg_probe()
706 mvotg->qwork = create_singlethread_workqueue("mv_otg_queue"); in mv_otg_probe()
707 if (!mvotg->qwork) { in mv_otg_probe()
712 INIT_DELAYED_WORK(&mvotg->work, mv_otg_work); in mv_otg_probe()
715 mvotg->pdev = pdev; in mv_otg_probe()
716 mvotg->phy.dev = &pdev->dev; in mv_otg_probe()
717 mvotg->phy.otg = otg; in mv_otg_probe()
718 mvotg->phy.label = driver_name; in mv_otg_probe()
721 otg->usb_phy = &mvotg->phy; in mv_otg_probe()
727 init_timer(&mvotg->otg_ctrl.timer[i]); in mv_otg_probe()
729 r = platform_get_resource_byname(mvotg->pdev, in mv_otg_probe()
737 mvotg->phy_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r)); in mv_otg_probe()
738 if (mvotg->phy_regs == NULL) { in mv_otg_probe()
744 r = platform_get_resource_byname(mvotg->pdev, in mv_otg_probe()
752 mvotg->cap_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r)); in mv_otg_probe()
753 if (mvotg->cap_regs == NULL) { in mv_otg_probe()
760 retval = mv_otg_enable_internal(mvotg); in mv_otg_probe()
766 mvotg->op_regs = in mv_otg_probe()
767 (struct mv_otg_regs __iomem *) ((unsigned long) mvotg->cap_regs in mv_otg_probe()
768 + (readl(mvotg->cap_regs) & CAPLENGTH_MASK)); in mv_otg_probe()
773 IRQF_ONESHOT, "id", mvotg); in mv_otg_probe()
782 mvotg->clock_gating = 1; in mv_otg_probe()
785 IRQF_ONESHOT, "vbus", mvotg); in mv_otg_probe()
790 mvotg->clock_gating = 0; in mv_otg_probe()
796 mvotg->clock_gating = 0; in mv_otg_probe()
798 mv_otg_reset(mvotg); in mv_otg_probe()
799 mv_otg_init_irq(mvotg); in mv_otg_probe()
801 r = platform_get_resource(mvotg->pdev, IORESOURCE_IRQ, 0); in mv_otg_probe()
808 mvotg->irq = r->start; in mv_otg_probe()
809 if (devm_request_irq(&pdev->dev, mvotg->irq, mv_otg_irq, IRQF_SHARED, in mv_otg_probe()
810 driver_name, mvotg)) { in mv_otg_probe()
812 mvotg->irq); in mv_otg_probe()
813 mvotg->irq = 0; in mv_otg_probe()
818 retval = usb_add_phy(&mvotg->phy, USB_PHY_TYPE_USB2); in mv_otg_probe()
832 spin_lock_init(&mvotg->wq_lock); in mv_otg_probe()
833 if (spin_trylock(&mvotg->wq_lock)) { in mv_otg_probe()
834 mv_otg_run_state_machine(mvotg, 2 * HZ); in mv_otg_probe()
835 spin_unlock(&mvotg->wq_lock); in mv_otg_probe()
840 mvotg->clock_gating ? "with" : "without"); in mv_otg_probe()
845 usb_remove_phy(&mvotg->phy); in mv_otg_probe()
847 mv_otg_disable_internal(mvotg); in mv_otg_probe()
849 flush_workqueue(mvotg->qwork); in mv_otg_probe()
850 destroy_workqueue(mvotg->qwork); in mv_otg_probe()
858 struct mv_otg *mvotg = platform_get_drvdata(pdev); in mv_otg_suspend() local
860 if (mvotg->phy.otg->state != OTG_STATE_B_IDLE) { in mv_otg_suspend()
863 mvotg->phy.otg->state); in mv_otg_suspend()
867 if (!mvotg->clock_gating) in mv_otg_suspend()
868 mv_otg_disable_internal(mvotg); in mv_otg_suspend()
875 struct mv_otg *mvotg = platform_get_drvdata(pdev); in mv_otg_resume() local
878 if (!mvotg->clock_gating) { in mv_otg_resume()
879 mv_otg_enable_internal(mvotg); in mv_otg_resume()
881 otgsc = readl(&mvotg->op_regs->otgsc); in mv_otg_resume()
882 otgsc |= mvotg->irq_en; in mv_otg_resume()
883 writel(otgsc, &mvotg->op_regs->otgsc); in mv_otg_resume()
885 if (spin_trylock(&mvotg->wq_lock)) { in mv_otg_resume()
886 mv_otg_run_state_machine(mvotg, 0); in mv_otg_resume()
887 spin_unlock(&mvotg->wq_lock); in mv_otg_resume()