Lines Matching refs:mvotg
54 struct mv_otg *mvotg = container_of(otg->usb_phy, struct mv_otg, phy); in mv_otg_set_vbus() local
55 if (mvotg->pdata->set_vbus == NULL) in mv_otg_set_vbus()
58 return mvotg->pdata->set_vbus(on); in mv_otg_set_vbus()
77 static void mv_otg_run_state_machine(struct mv_otg *mvotg, in mv_otg_run_state_machine() argument
80 dev_dbg(&mvotg->pdev->dev, "transceiver is updated\n"); in mv_otg_run_state_machine()
81 if (!mvotg->qwork) in mv_otg_run_state_machine()
84 queue_delayed_work(mvotg->qwork, &mvotg->work, delay); in mv_otg_run_state_machine()
89 struct mv_otg *mvotg = from_timer(mvotg, t, in mv_otg_timer_await_bcon() local
92 mvotg->otg_ctrl.a_wait_bcon_timeout = 1; in mv_otg_timer_await_bcon()
94 dev_info(&mvotg->pdev->dev, "B Device No Response!\n"); in mv_otg_timer_await_bcon()
96 if (spin_trylock(&mvotg->wq_lock)) { in mv_otg_timer_await_bcon()
97 mv_otg_run_state_machine(mvotg, 0); in mv_otg_timer_await_bcon()
98 spin_unlock(&mvotg->wq_lock); in mv_otg_timer_await_bcon()
102 static int mv_otg_cancel_timer(struct mv_otg *mvotg, unsigned int id) in mv_otg_cancel_timer() argument
109 timer = &mvotg->otg_ctrl.timer[id]; in mv_otg_cancel_timer()
117 static int mv_otg_set_timer(struct mv_otg *mvotg, unsigned int id, in mv_otg_set_timer() argument
125 timer = &mvotg->otg_ctrl.timer[id]; in mv_otg_set_timer()
127 dev_err(&mvotg->pdev->dev, "Timer%d is already running\n", id); in mv_otg_set_timer()
137 static int mv_otg_reset(struct mv_otg *mvotg) in mv_otg_reset() argument
143 tmp = readl(&mvotg->op_regs->usbcmd); in mv_otg_reset()
145 writel(tmp, &mvotg->op_regs->usbcmd); in mv_otg_reset()
148 writel(USBCMD_CTRL_RESET, &mvotg->op_regs->usbcmd); in mv_otg_reset()
150 ret = readl_poll_timeout_atomic(&mvotg->op_regs->usbcmd, tmp, in mv_otg_reset()
153 dev_err(&mvotg->pdev->dev, in mv_otg_reset()
158 writel(0x0, &mvotg->op_regs->usbintr); in mv_otg_reset()
159 tmp = readl(&mvotg->op_regs->usbsts); in mv_otg_reset()
160 writel(tmp, &mvotg->op_regs->usbsts); in mv_otg_reset()
165 static void mv_otg_init_irq(struct mv_otg *mvotg) in mv_otg_init_irq() argument
169 mvotg->irq_en = OTGSC_INTR_A_SESSION_VALID in mv_otg_init_irq()
171 mvotg->irq_status = OTGSC_INTSTS_A_SESSION_VALID in mv_otg_init_irq()
174 if (mvotg->pdata->vbus == NULL) { in mv_otg_init_irq()
175 mvotg->irq_en |= OTGSC_INTR_B_SESSION_VALID in mv_otg_init_irq()
177 mvotg->irq_status |= OTGSC_INTSTS_B_SESSION_VALID in mv_otg_init_irq()
181 if (mvotg->pdata->id == NULL) { in mv_otg_init_irq()
182 mvotg->irq_en |= OTGSC_INTR_USB_ID; in mv_otg_init_irq()
183 mvotg->irq_status |= OTGSC_INTSTS_USB_ID; in mv_otg_init_irq()
186 otgsc = readl(&mvotg->op_regs->otgsc); in mv_otg_init_irq()
187 otgsc |= mvotg->irq_en; in mv_otg_init_irq()
188 writel(otgsc, &mvotg->op_regs->otgsc); in mv_otg_init_irq()
191 static void mv_otg_start_host(struct mv_otg *mvotg, int on) in mv_otg_start_host() argument
194 struct usb_otg *otg = mvotg->phy.otg; in mv_otg_start_host()
200 dev_info(&mvotg->pdev->dev, "%s host\n", on ? "start" : "stop"); in mv_otg_start_host()
213 static void mv_otg_start_periphrals(struct mv_otg *mvotg, int on) in mv_otg_start_periphrals() argument
215 struct usb_otg *otg = mvotg->phy.otg; in mv_otg_start_periphrals()
220 dev_info(mvotg->phy.dev, "gadget %s\n", on ? "on" : "off"); in mv_otg_start_periphrals()
228 static void otg_clock_enable(struct mv_otg *mvotg) in otg_clock_enable() argument
230 clk_prepare_enable(mvotg->clk); in otg_clock_enable()
233 static void otg_clock_disable(struct mv_otg *mvotg) in otg_clock_disable() argument
235 clk_disable_unprepare(mvotg->clk); in otg_clock_disable()
238 static int mv_otg_enable_internal(struct mv_otg *mvotg) in mv_otg_enable_internal() argument
242 if (mvotg->active) in mv_otg_enable_internal()
245 dev_dbg(&mvotg->pdev->dev, "otg enabled\n"); in mv_otg_enable_internal()
247 otg_clock_enable(mvotg); in mv_otg_enable_internal()
248 if (mvotg->pdata->phy_init) { in mv_otg_enable_internal()
249 retval = mvotg->pdata->phy_init(mvotg->phy_regs); in mv_otg_enable_internal()
251 dev_err(&mvotg->pdev->dev, in mv_otg_enable_internal()
253 otg_clock_disable(mvotg); in mv_otg_enable_internal()
257 mvotg->active = 1; in mv_otg_enable_internal()
263 static int mv_otg_enable(struct mv_otg *mvotg) in mv_otg_enable() argument
265 if (mvotg->clock_gating) in mv_otg_enable()
266 return mv_otg_enable_internal(mvotg); in mv_otg_enable()
271 static void mv_otg_disable_internal(struct mv_otg *mvotg) in mv_otg_disable_internal() argument
273 if (mvotg->active) { in mv_otg_disable_internal()
274 dev_dbg(&mvotg->pdev->dev, "otg disabled\n"); in mv_otg_disable_internal()
275 if (mvotg->pdata->phy_deinit) in mv_otg_disable_internal()
276 mvotg->pdata->phy_deinit(mvotg->phy_regs); in mv_otg_disable_internal()
277 otg_clock_disable(mvotg); in mv_otg_disable_internal()
278 mvotg->active = 0; in mv_otg_disable_internal()
282 static void mv_otg_disable(struct mv_otg *mvotg) in mv_otg_disable() argument
284 if (mvotg->clock_gating) in mv_otg_disable()
285 mv_otg_disable_internal(mvotg); in mv_otg_disable()
288 static void mv_otg_update_inputs(struct mv_otg *mvotg) in mv_otg_update_inputs() argument
290 struct mv_otg_ctrl *otg_ctrl = &mvotg->otg_ctrl; in mv_otg_update_inputs()
293 otgsc = readl(&mvotg->op_regs->otgsc); in mv_otg_update_inputs()
295 if (mvotg->pdata->vbus) { in mv_otg_update_inputs()
296 if (mvotg->pdata->vbus->poll() == VBUS_HIGH) { in mv_otg_update_inputs()
308 if (mvotg->pdata->id) in mv_otg_update_inputs()
309 otg_ctrl->id = !!mvotg->pdata->id->poll(); in mv_otg_update_inputs()
313 if (mvotg->pdata->otg_force_a_bus_req && !otg_ctrl->id) in mv_otg_update_inputs()
319 dev_dbg(&mvotg->pdev->dev, "%s: ", __func__); in mv_otg_update_inputs()
320 dev_dbg(&mvotg->pdev->dev, "id %d\n", otg_ctrl->id); in mv_otg_update_inputs()
321 dev_dbg(&mvotg->pdev->dev, "b_sess_vld %d\n", otg_ctrl->b_sess_vld); in mv_otg_update_inputs()
322 dev_dbg(&mvotg->pdev->dev, "b_sess_end %d\n", otg_ctrl->b_sess_end); in mv_otg_update_inputs()
323 dev_dbg(&mvotg->pdev->dev, "a_vbus_vld %d\n", otg_ctrl->a_vbus_vld); in mv_otg_update_inputs()
324 dev_dbg(&mvotg->pdev->dev, "a_sess_vld %d\n", otg_ctrl->a_sess_vld); in mv_otg_update_inputs()
327 static void mv_otg_update_state(struct mv_otg *mvotg) in mv_otg_update_state() argument
329 struct mv_otg_ctrl *otg_ctrl = &mvotg->otg_ctrl; in mv_otg_update_state()
330 int old_state = mvotg->phy.otg->state; in mv_otg_update_state()
334 mvotg->phy.otg->state = OTG_STATE_B_IDLE; in mv_otg_update_state()
338 mvotg->phy.otg->state = OTG_STATE_A_IDLE; in mv_otg_update_state()
340 mvotg->phy.otg->state = OTG_STATE_B_PERIPHERAL; in mv_otg_update_state()
344 mvotg->phy.otg->state = OTG_STATE_B_IDLE; in mv_otg_update_state()
348 mvotg->phy.otg->state = OTG_STATE_B_IDLE; in mv_otg_update_state()
351 mvotg->phy.otg->state = OTG_STATE_A_WAIT_VRISE; in mv_otg_update_state()
355 mvotg->phy.otg->state = OTG_STATE_A_WAIT_BCON; in mv_otg_update_state()
360 mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER); in mv_otg_update_state()
361 mvotg->otg_ctrl.a_wait_bcon_timeout = 0; in mv_otg_update_state()
362 mvotg->phy.otg->state = OTG_STATE_A_WAIT_VFALL; in mv_otg_update_state()
365 mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER); in mv_otg_update_state()
366 mvotg->otg_ctrl.a_wait_bcon_timeout = 0; in mv_otg_update_state()
367 mvotg->phy.otg->state = OTG_STATE_A_VBUS_ERR; in mv_otg_update_state()
369 mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER); in mv_otg_update_state()
370 mvotg->otg_ctrl.a_wait_bcon_timeout = 0; in mv_otg_update_state()
371 mvotg->phy.otg->state = OTG_STATE_A_HOST; in mv_otg_update_state()
377 mvotg->phy.otg->state = OTG_STATE_A_WAIT_BCON; in mv_otg_update_state()
379 mvotg->phy.otg->state = OTG_STATE_A_VBUS_ERR; in mv_otg_update_state()
385 mvotg->phy.otg->state = OTG_STATE_A_IDLE; in mv_otg_update_state()
391 mvotg->phy.otg->state = OTG_STATE_A_WAIT_VFALL; in mv_otg_update_state()
401 struct mv_otg *mvotg; in mv_otg_work() local
405 mvotg = container_of(to_delayed_work(work), struct mv_otg, work); in mv_otg_work()
409 otg = mvotg->phy.otg; in mv_otg_work()
412 if (!mvotg->active) in mv_otg_work()
415 mv_otg_update_inputs(mvotg); in mv_otg_work()
416 mv_otg_update_state(mvotg); in mv_otg_work()
418 if (old_state != mvotg->phy.otg->state) { in mv_otg_work()
419 dev_info(&mvotg->pdev->dev, "change from state %s to %s\n", in mv_otg_work()
421 state_string[mvotg->phy.otg->state]); in mv_otg_work()
423 switch (mvotg->phy.otg->state) { in mv_otg_work()
427 mv_otg_start_periphrals(mvotg, 0); in mv_otg_work()
428 mv_otg_reset(mvotg); in mv_otg_work()
429 mv_otg_disable(mvotg); in mv_otg_work()
430 usb_phy_set_event(&mvotg->phy, USB_EVENT_NONE); in mv_otg_work()
433 mv_otg_enable(mvotg); in mv_otg_work()
434 mv_otg_start_periphrals(mvotg, 1); in mv_otg_work()
435 usb_phy_set_event(&mvotg->phy, USB_EVENT_ENUMERATED); in mv_otg_work()
439 mv_otg_enable(mvotg); in mv_otg_work()
441 mv_otg_start_host(mvotg, 0); in mv_otg_work()
442 mv_otg_reset(mvotg); in mv_otg_work()
449 mv_otg_start_host(mvotg, 1); in mv_otg_work()
450 mv_otg_set_timer(mvotg, A_WAIT_BCON_TIMER, in mv_otg_work()
456 mvotg->otg_ctrl.b_conn = 1; in mv_otg_work()
465 mvotg->otg_ctrl.b_conn = 0; in mv_otg_work()
479 struct mv_otg *mvotg = dev; in mv_otg_irq() local
482 otgsc = readl(&mvotg->op_regs->otgsc); in mv_otg_irq()
483 writel(otgsc, &mvotg->op_regs->otgsc); in mv_otg_irq()
489 if (mvotg->pdata->vbus) in mv_otg_irq()
494 if ((otgsc & mvotg->irq_status) == 0) in mv_otg_irq()
497 mv_otg_run_state_machine(mvotg, 0); in mv_otg_irq()
504 struct mv_otg *mvotg = dev; in mv_otg_inputs_irq() local
507 if (!mvotg->active) { in mv_otg_inputs_irq()
508 mv_otg_enable(mvotg); in mv_otg_inputs_irq()
509 mv_otg_init_irq(mvotg); in mv_otg_inputs_irq()
512 mv_otg_run_state_machine(mvotg, 0); in mv_otg_inputs_irq()
520 struct mv_otg *mvotg = dev_get_drvdata(dev); in a_bus_req_show() local
522 mvotg->otg_ctrl.a_bus_req); in a_bus_req_show()
529 struct mv_otg *mvotg = dev_get_drvdata(dev); in a_bus_req_store() local
535 if (mvotg->phy.otg->state != OTG_STATE_B_IDLE in a_bus_req_store()
536 && mvotg->phy.otg->state != OTG_STATE_A_IDLE) in a_bus_req_store()
540 mv_otg_enable(mvotg); in a_bus_req_store()
541 mv_otg_init_irq(mvotg); in a_bus_req_store()
544 mvotg->otg_ctrl.a_bus_req = 1; in a_bus_req_store()
545 mvotg->otg_ctrl.a_bus_drop = 0; in a_bus_req_store()
546 dev_dbg(&mvotg->pdev->dev, in a_bus_req_store()
549 if (spin_trylock(&mvotg->wq_lock)) { in a_bus_req_store()
550 mv_otg_run_state_machine(mvotg, 0); in a_bus_req_store()
551 spin_unlock(&mvotg->wq_lock); in a_bus_req_store()
564 struct mv_otg *mvotg = dev_get_drvdata(dev); in a_clr_err_store() local
565 if (!mvotg->phy.otg->default_a) in a_clr_err_store()
572 mvotg->otg_ctrl.a_clr_err = 1; in a_clr_err_store()
573 dev_dbg(&mvotg->pdev->dev, in a_clr_err_store()
577 if (spin_trylock(&mvotg->wq_lock)) { in a_clr_err_store()
578 mv_otg_run_state_machine(mvotg, 0); in a_clr_err_store()
579 spin_unlock(&mvotg->wq_lock); in a_clr_err_store()
591 struct mv_otg *mvotg = dev_get_drvdata(dev); in a_bus_drop_show() local
593 mvotg->otg_ctrl.a_bus_drop); in a_bus_drop_show()
600 struct mv_otg *mvotg = dev_get_drvdata(dev); in a_bus_drop_store() local
601 if (!mvotg->phy.otg->default_a) in a_bus_drop_store()
608 mvotg->otg_ctrl.a_bus_drop = 0; in a_bus_drop_store()
609 dev_dbg(&mvotg->pdev->dev, in a_bus_drop_store()
612 mvotg->otg_ctrl.a_bus_drop = 1; in a_bus_drop_store()
613 mvotg->otg_ctrl.a_bus_req = 0; in a_bus_drop_store()
614 dev_dbg(&mvotg->pdev->dev, in a_bus_drop_store()
616 dev_dbg(&mvotg->pdev->dev, in a_bus_drop_store()
620 if (spin_trylock(&mvotg->wq_lock)) { in a_bus_drop_store()
621 mv_otg_run_state_machine(mvotg, 0); in a_bus_drop_store()
622 spin_unlock(&mvotg->wq_lock); in a_bus_drop_store()
649 struct mv_otg *mvotg = platform_get_drvdata(pdev); in mv_otg_remove() local
651 if (mvotg->qwork) in mv_otg_remove()
652 destroy_workqueue(mvotg->qwork); in mv_otg_remove()
654 mv_otg_disable(mvotg); in mv_otg_remove()
656 usb_remove_phy(&mvotg->phy); in mv_otg_remove()
662 struct mv_otg *mvotg; in mv_otg_probe() local
672 mvotg = devm_kzalloc(&pdev->dev, sizeof(*mvotg), GFP_KERNEL); in mv_otg_probe()
673 if (!mvotg) in mv_otg_probe()
680 platform_set_drvdata(pdev, mvotg); in mv_otg_probe()
682 mvotg->pdev = pdev; in mv_otg_probe()
683 mvotg->pdata = pdata; in mv_otg_probe()
685 mvotg->clk = devm_clk_get(&pdev->dev, NULL); in mv_otg_probe()
686 if (IS_ERR(mvotg->clk)) in mv_otg_probe()
687 return PTR_ERR(mvotg->clk); in mv_otg_probe()
689 mvotg->qwork = create_singlethread_workqueue("mv_otg_queue"); in mv_otg_probe()
690 if (!mvotg->qwork) { in mv_otg_probe()
695 INIT_DELAYED_WORK(&mvotg->work, mv_otg_work); in mv_otg_probe()
698 mvotg->pdev = pdev; in mv_otg_probe()
699 mvotg->phy.dev = &pdev->dev; in mv_otg_probe()
700 mvotg->phy.otg = otg; in mv_otg_probe()
701 mvotg->phy.label = driver_name; in mv_otg_probe()
704 otg->usb_phy = &mvotg->phy; in mv_otg_probe()
710 timer_setup(&mvotg->otg_ctrl.timer[i], in mv_otg_probe()
713 r = platform_get_resource_byname(mvotg->pdev, in mv_otg_probe()
721 mvotg->phy_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r)); in mv_otg_probe()
722 if (mvotg->phy_regs == NULL) { in mv_otg_probe()
728 r = platform_get_resource_byname(mvotg->pdev, in mv_otg_probe()
736 mvotg->cap_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r)); in mv_otg_probe()
737 if (mvotg->cap_regs == NULL) { in mv_otg_probe()
744 retval = mv_otg_enable_internal(mvotg); in mv_otg_probe()
750 mvotg->op_regs = in mv_otg_probe()
751 (struct mv_otg_regs __iomem *) ((unsigned long) mvotg->cap_regs in mv_otg_probe()
752 + (readl(mvotg->cap_regs) & CAPLENGTH_MASK)); in mv_otg_probe()
757 IRQF_ONESHOT, "id", mvotg); in mv_otg_probe()
766 mvotg->clock_gating = 1; in mv_otg_probe()
769 IRQF_ONESHOT, "vbus", mvotg); in mv_otg_probe()
774 mvotg->clock_gating = 0; in mv_otg_probe()
780 mvotg->clock_gating = 0; in mv_otg_probe()
782 mv_otg_reset(mvotg); in mv_otg_probe()
783 mv_otg_init_irq(mvotg); in mv_otg_probe()
785 r = platform_get_resource(mvotg->pdev, IORESOURCE_IRQ, 0); in mv_otg_probe()
792 mvotg->irq = r->start; in mv_otg_probe()
793 if (devm_request_irq(&pdev->dev, mvotg->irq, mv_otg_irq, IRQF_SHARED, in mv_otg_probe()
794 driver_name, mvotg)) { in mv_otg_probe()
796 mvotg->irq); in mv_otg_probe()
797 mvotg->irq = 0; in mv_otg_probe()
802 retval = usb_add_phy(&mvotg->phy, USB_PHY_TYPE_USB2); in mv_otg_probe()
809 spin_lock_init(&mvotg->wq_lock); in mv_otg_probe()
810 if (spin_trylock(&mvotg->wq_lock)) { in mv_otg_probe()
811 mv_otg_run_state_machine(mvotg, 2 * HZ); in mv_otg_probe()
812 spin_unlock(&mvotg->wq_lock); in mv_otg_probe()
817 mvotg->clock_gating ? "with" : "without"); in mv_otg_probe()
822 mv_otg_disable_internal(mvotg); in mv_otg_probe()
824 destroy_workqueue(mvotg->qwork); in mv_otg_probe()
832 struct mv_otg *mvotg = platform_get_drvdata(pdev); in mv_otg_suspend() local
834 if (mvotg->phy.otg->state != OTG_STATE_B_IDLE) { in mv_otg_suspend()
837 mvotg->phy.otg->state); in mv_otg_suspend()
841 if (!mvotg->clock_gating) in mv_otg_suspend()
842 mv_otg_disable_internal(mvotg); in mv_otg_suspend()
849 struct mv_otg *mvotg = platform_get_drvdata(pdev); in mv_otg_resume() local
852 if (!mvotg->clock_gating) { in mv_otg_resume()
853 mv_otg_enable_internal(mvotg); in mv_otg_resume()
855 otgsc = readl(&mvotg->op_regs->otgsc); in mv_otg_resume()
856 otgsc |= mvotg->irq_en; in mv_otg_resume()
857 writel(otgsc, &mvotg->op_regs->otgsc); in mv_otg_resume()
859 if (spin_trylock(&mvotg->wq_lock)) { in mv_otg_resume()
860 mv_otg_run_state_machine(mvotg, 0); in mv_otg_resume()
861 spin_unlock(&mvotg->wq_lock); in mv_otg_resume()