Lines Matching +full:otg +full:- +full:rev
1 // SPDX-License-Identifier: GPL-2.0
3 * TUSB6010 USB 2.0 OTG Dual Role controller
9 * - Driver assumes that interface to external host (main CPU) is
24 #include <linux/dma-mapping.h>
46 void __iomem *tbase = musb->ctrl_base; in tusb_get_revision()
48 u8 rev; in tusb_get_revision() local
50 rev = musb_readl(tbase, TUSB_DMA_CTRL_REV) & 0xff; in tusb_get_revision()
51 if (TUSB_REV_MAJOR(rev) == 3) { in tusb_get_revision()
55 rev |= 1; in tusb_get_revision()
58 return rev; in tusb_get_revision()
63 void __iomem *tbase = musb->ctrl_base; in tusb_print_revision()
64 u8 rev; in tusb_print_revision() local
66 rev = musb->tusb_revision; in tusb_print_revision()
83 "rev", in tusb_print_revision()
84 TUSB_REV_MAJOR(rev), TUSB_REV_MINOR(rev)); in tusb_print_revision()
91 * Workaround for spontaneous WBUS wake-up issue #2 for tusb3.0.
96 void __iomem *tbase = musb->ctrl_base; in tusb_wbus_quirk()
109 dev_dbg(musb->controller, "Enabled tusb wbus quirk ctrl %08x ena %08x\n", in tusb_wbus_quirk()
118 dev_dbg(musb->controller, "Disabled tusb wbus quirk ctrl %08x ena %08x\n", in tusb_wbus_quirk()
143 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
192 /* Write the rest 1 - 3 bytes to FIFO */ in tusb_fifo_write_unaligned()
214 /* Read the rest 1 - 3 bytes from FIFO */ in tusb_fifo_read_unaligned()
222 struct musb *musb = hw_ep->musb; in tusb_write_fifo()
223 void __iomem *ep_conf = hw_ep->conf; in tusb_write_fifo()
224 void __iomem *fifo = hw_ep->fifo; in tusb_write_fifo()
225 u8 epnum = hw_ep->epnum; in tusb_write_fifo()
229 dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n", in tusb_write_fifo()
241 /* Best case is 32bit-aligned destination address */ in tusb_write_fifo()
253 /* Cannot use writesw, fifo is 32-bit */ in tusb_write_fifo()
272 struct musb *musb = hw_ep->musb; in tusb_read_fifo()
273 void __iomem *ep_conf = hw_ep->conf; in tusb_read_fifo()
274 void __iomem *fifo = hw_ep->fifo; in tusb_read_fifo()
275 u8 epnum = hw_ep->epnum; in tusb_read_fifo()
277 dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n", in tusb_read_fifo()
288 /* Best case is 32bit-aligned destination address */ in tusb_read_fifo()
300 /* Cannot use readsw, fifo is 32-bit */ in tusb_read_fifo()
319 /* This is used by gadget drivers, and OTG transceiver logic, allowing
320 * at most mA current to be drawn from VBUS during a Default-B session
321 * (that is, while VBUS exceeds 4.4V). In Default-A (including pure host
322 * mode), or low power Default-B sessions, something else supplies power.
328 void __iomem *tbase = musb->ctrl_base; in tusb_draw_power()
338 * The actual current usage would be very board-specific. For now, in tusb_draw_power()
339 * it's simpler to just use an aggregate (also board-specific). in tusb_draw_power()
341 if (x->otg->default_a || mA < (musb->min_power << 1)) in tusb_draw_power()
346 musb->is_bus_powered = 1; in tusb_draw_power()
349 musb->is_bus_powered = 0; in tusb_draw_power()
354 dev_dbg(musb->controller, "draw max %d mA VBUS\n", mA); in tusb_draw_power()
364 void __iomem *tbase = musb->ctrl_base; in tusb_set_clock_source()
384 * Idle TUSB6010 until next wake-up event; NOR access always wakes.
391 void __iomem *tbase = musb->ctrl_base; in tusb_allow_idle()
395 && (musb->tusb_revision == TUSB_REV_30)) in tusb_allow_idle()
420 dev_dbg(musb->controller, "idle, wake on %02x\n", wakeup_enables); in tusb_allow_idle()
428 void __iomem *tbase = musb->ctrl_base; in tusb_musb_vbus_status()
458 spin_lock_irqsave(&musb->lock, flags); in musb_do_idle()
460 switch (musb->xceiv->otg->state) { in musb_do_idle()
462 if ((musb->a_wait_bcon != 0) in musb_do_idle()
463 && (musb->idle_timeout == 0 in musb_do_idle()
464 || time_after(jiffies, musb->idle_timeout))) { in musb_do_idle()
465 dev_dbg(musb->controller, "Nothing connected %s, turning off VBUS\n", in musb_do_idle()
466 usb_otg_state_string(musb->xceiv->otg->state)); in musb_do_idle()
475 if (!musb->is_active) { in musb_do_idle()
479 if (is_host_active(musb) && (musb->port1_status >> 16)) in musb_do_idle()
482 if (!musb->gadget_driver) { in musb_do_idle()
493 spin_unlock_irqrestore(&musb->lock, flags); in musb_do_idle()
502 * register access to TUSB6010 because of NOR flash wake-up.
518 if (musb->is_active || ((musb->a_wait_bcon == 0) in tusb_musb_try_idle()
519 && (musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON))) { in tusb_musb_try_idle()
520 dev_dbg(musb->controller, "%s active, deleting timer\n", in tusb_musb_try_idle()
521 usb_otg_state_string(musb->xceiv->otg->state)); in tusb_musb_try_idle()
522 del_timer(&musb->dev_timer); in tusb_musb_try_idle()
528 if (!timer_pending(&musb->dev_timer)) in tusb_musb_try_idle()
531 dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n"); in tusb_musb_try_idle()
537 dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", in tusb_musb_try_idle()
538 usb_otg_state_string(musb->xceiv->otg->state), in tusb_musb_try_idle()
539 (unsigned long)jiffies_to_msecs(timeout - jiffies)); in tusb_musb_try_idle()
540 mod_timer(&musb->dev_timer, timeout); in tusb_musb_try_idle()
552 void __iomem *tbase = musb->ctrl_base; in tusb_musb_set_vbus()
555 struct usb_otg *otg = musb->xceiv->otg; in tusb_musb_set_vbus() local
564 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); in tusb_musb_set_vbus()
568 otg->default_a = 1; in tusb_musb_set_vbus()
569 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; in tusb_musb_set_vbus()
582 switch (musb->xceiv->otg->state) { in tusb_musb_set_vbus()
585 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VFALL; in tusb_musb_set_vbus()
588 musb->xceiv->otg->state = OTG_STATE_A_IDLE; in tusb_musb_set_vbus()
591 musb->xceiv->otg->state = OTG_STATE_A_IDLE; in tusb_musb_set_vbus()
593 musb->is_active = 0; in tusb_musb_set_vbus()
594 otg->default_a = 1; in tusb_musb_set_vbus()
597 musb->is_active = 0; in tusb_musb_set_vbus()
598 otg->default_a = 0; in tusb_musb_set_vbus()
599 musb->xceiv->otg->state = OTG_STATE_B_IDLE; in tusb_musb_set_vbus()
611 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); in tusb_musb_set_vbus()
613 dev_dbg(musb->controller, "VBUS %s, devctl %02x otg %3x conf %08x prcm %08x\n", in tusb_musb_set_vbus()
614 usb_otg_state_string(musb->xceiv->otg->state), in tusb_musb_set_vbus()
615 musb_readb(musb->mregs, MUSB_DEVCTL), in tusb_musb_set_vbus()
621 * Sets the mode to OTG, peripheral or host by changing the ID detection.
624 * Note that if a mini-A cable is plugged in the ID line will stay down as
625 * the weak ID pull-up is not able to pull the ID up.
629 void __iomem *tbase = musb->ctrl_base; in tusb_musb_set_mode()
645 case MUSB_PERIPHERAL: /* Disable PHY ID detect, keep ID pull-up on */ in tusb_musb_set_mode()
657 dev_dbg(musb->controller, "Trying to set mode %i\n", musb_mode); in tusb_musb_set_mode()
658 return -EINVAL; in tusb_musb_set_mode()
670 INFO("Cannot be peripheral with mini-A cable " in tusb_musb_set_mode()
681 struct usb_otg *otg = musb->xceiv->otg; in tusb_otg_ints() local
688 dev_dbg(musb->controller, "Default-%c\n", default_a ? 'A' : 'B'); in tusb_otg_ints()
689 otg->default_a = default_a; in tusb_otg_ints()
700 /* B-dev state machine: no vbus ~= disconnect */ in tusb_otg_ints()
701 if (!otg->default_a) { in tusb_otg_ints()
703 musb->port1_status &= in tusb_otg_ints()
712 dev_dbg(musb->controller, "Forcing disconnect (no interrupt)\n"); in tusb_otg_ints()
713 if (musb->xceiv->otg->state != OTG_STATE_B_IDLE) { in tusb_otg_ints()
715 musb->xceiv->otg->state = OTG_STATE_B_IDLE; in tusb_otg_ints()
716 musb->int_usb |= MUSB_INTR_DISCONNECT; in tusb_otg_ints()
718 musb->is_active = 0; in tusb_otg_ints()
720 dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", in tusb_otg_ints()
721 usb_otg_state_string(musb->xceiv->otg->state), otg_stat); in tusb_otg_ints()
723 schedule_delayed_work(&musb->irq_work, 0); in tusb_otg_ints()
725 } else /* A-dev state machine */ { in tusb_otg_ints()
726 dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", in tusb_otg_ints()
727 usb_otg_state_string(musb->xceiv->otg->state), otg_stat); in tusb_otg_ints()
729 switch (musb->xceiv->otg->state) { in tusb_otg_ints()
731 dev_dbg(musb->controller, "Got SRP, turning on VBUS\n"); in tusb_otg_ints()
735 if (musb->a_wait_bcon != 0) in tusb_otg_ints()
736 musb->is_active = 0; in tusb_otg_ints()
738 musb->is_active = 1; in tusb_otg_ints()
748 /* ignore; A-session-valid < VBUS_VALID/2, in tusb_otg_ints()
756 if (musb->vbuserr_retry) { in tusb_otg_ints()
757 musb->vbuserr_retry--; in tusb_otg_ints()
760 musb->vbuserr_retry in tusb_otg_ints()
771 /* OTG timer expiration */ in tusb_otg_ints()
775 dev_dbg(musb->controller, "%s timer, %03x\n", in tusb_otg_ints()
776 usb_otg_state_string(musb->xceiv->otg->state), otg_stat); in tusb_otg_ints()
778 switch (musb->xceiv->otg->state) { in tusb_otg_ints()
783 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); in tusb_otg_ints()
787 dev_dbg(musb->controller, "devctl %02x\n", devctl); in tusb_otg_ints()
790 musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON; in tusb_otg_ints()
791 musb->is_active = 0; in tusb_otg_ints()
793 + msecs_to_jiffies(musb->a_wait_bcon); in tusb_otg_ints()
801 if (musb->a_wait_bcon != 0) in tusb_otg_ints()
803 + msecs_to_jiffies(musb->a_wait_bcon); in tusb_otg_ints()
813 schedule_delayed_work(&musb->irq_work, 0); in tusb_otg_ints()
821 void __iomem *tbase = musb->ctrl_base; in tusb_musb_interrupt()
825 spin_lock_irqsave(&musb->lock, flags); in tusb_musb_interrupt()
832 dev_dbg(musb->controller, "TUSB IRQ %08x\n", int_src); in tusb_musb_interrupt()
834 musb->int_usb = (u8) int_src; in tusb_musb_interrupt()
836 /* Acknowledge wake-up source interrupts */ in tusb_musb_interrupt()
841 if (musb->tusb_revision == TUSB_REV_30) in tusb_musb_interrupt()
844 /* there are issues re-locking the PLL on wakeup ... */ in tusb_musb_interrupt()
847 for (i = 0xf7f7f7; i > 0xf7f7f7 - 1000; i--) { in tusb_musb_interrupt()
853 dev_dbg(musb->controller, "TUSB NOR not ready\n"); in tusb_musb_interrupt()
862 musb->is_active = 1; in tusb_musb_interrupt()
863 schedule_delayed_work(&musb->irq_work, 0); in tusb_musb_interrupt()
865 dev_dbg(musb->controller, "wake %sactive %02x\n", in tusb_musb_interrupt()
866 musb->is_active ? "" : "in", reg); in tusb_musb_interrupt()
872 del_timer(&musb->dev_timer); in tusb_musb_interrupt()
874 /* OTG state change reports (annoyingly) not issued by Mentor core */ in tusb_musb_interrupt()
887 dev_dbg(musb->controller, "DMA IRQ %08x\n", dma_src); in tusb_musb_interrupt()
896 musb->int_rx = (((musb_src >> 16) & 0xffff) << 1); in tusb_musb_interrupt()
897 musb->int_tx = (musb_src & 0xffff); in tusb_musb_interrupt()
899 musb->int_rx = 0; in tusb_musb_interrupt()
900 musb->int_tx = 0; in tusb_musb_interrupt()
906 /* Acknowledge TUSB interrupts. Clear only non-reserved bits */ in tusb_musb_interrupt()
913 spin_unlock_irqrestore(&musb->lock, flags); in tusb_musb_interrupt()
923 * - Check what is unnecessary in MGC_HdrcStart()
927 void __iomem *tbase = musb->ctrl_base; in tusb_musb_enable()
946 /* Only 0 clock cycles for minimum interrupt de-assertion time and in tusb_musb_enable()
951 irq_set_irq_type(musb->nIrq, IRQ_TYPE_LEVEL_LOW); in tusb_musb_enable()
953 /* maybe force into the Default-A OTG state machine */ in tusb_musb_enable()
971 void __iomem *tbase = musb->ctrl_base; in tusb_musb_disable()
981 del_timer(&musb->dev_timer); in tusb_musb_disable()
996 void __iomem *tbase = musb->ctrl_base; in tusb_setup_cpu_interface()
1000 * Don't disable GPIO[7:6] as they are needed for wake-up. in tusb_setup_cpu_interface()
1011 * de-assertion time 2 system clocks p 62 */ in tusb_setup_cpu_interface()
1023 void __iomem *tbase = musb->ctrl_base; in tusb_musb_start()
1028 if (musb->board_set_power) in tusb_musb_start()
1029 ret = musb->board_set_power(1); in tusb_musb_start()
1035 spin_lock_irqsave(&musb->lock, flags); in tusb_musb_start()
1043 musb->tusb_revision = tusb_get_revision(musb); in tusb_musb_start()
1045 if (musb->tusb_revision < 2) { in tusb_musb_start()
1047 musb->tusb_revision); in tusb_musb_start()
1051 /* The uint bit for "USB non-PDR interrupt enable" has to be 1 when in tusb_musb_start()
1069 /* simplify: always sense/pullup ID pins, as if in OTG mode */ in tusb_musb_start()
1078 spin_unlock_irqrestore(&musb->lock, flags); in tusb_musb_start()
1083 spin_unlock_irqrestore(&musb->lock, flags); in tusb_musb_start()
1085 if (musb->board_set_power) in tusb_musb_start()
1086 musb->board_set_power(0); in tusb_musb_start()
1088 return -ENODEV; in tusb_musb_start()
1098 musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); in tusb_musb_init()
1099 if (IS_ERR_OR_NULL(musb->xceiv)) in tusb_musb_init()
1100 return -EPROBE_DEFER; in tusb_musb_init()
1102 pdev = to_platform_device(musb->controller); in tusb_musb_init()
1108 ret = -ENODEV; in tusb_musb_init()
1111 musb->async = mem->start; in tusb_musb_init()
1117 ret = -ENODEV; in tusb_musb_init()
1120 musb->sync = mem->start; in tusb_musb_init()
1122 sync = ioremap(mem->start, resource_size(mem)); in tusb_musb_init()
1125 ret = -ENOMEM; in tusb_musb_init()
1128 musb->sync_va = sync; in tusb_musb_init()
1133 musb->mregs += TUSB_BASE_OFFSET; in tusb_musb_init()
1141 musb->isr = tusb_musb_interrupt; in tusb_musb_init()
1143 musb->xceiv->set_power = tusb_draw_power; in tusb_musb_init()
1146 timer_setup(&musb->dev_timer, musb_do_idle, 0); in tusb_musb_init()
1153 usb_put_phy(musb->xceiv); in tusb_musb_init()
1160 del_timer_sync(&musb->dev_timer); in tusb_musb_exit()
1163 if (musb->board_set_power) in tusb_musb_exit()
1164 musb->board_set_power(0); in tusb_musb_exit()
1166 iounmap(musb->sync_va); in tusb_musb_exit()
1168 usb_put_phy(musb->xceiv); in tusb_musb_exit()
1200 .name = "musb-hdrc",
1208 struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); in tusb_probe()
1214 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); in tusb_probe()
1216 return -ENOMEM; in tusb_probe()
1218 glue->dev = &pdev->dev; in tusb_probe()
1220 pdata->platform_ops = &tusb_ops; in tusb_probe()
1228 musb_resources[0].name = pdev->resource[0].name; in tusb_probe()
1229 musb_resources[0].start = pdev->resource[0].start; in tusb_probe()
1230 musb_resources[0].end = pdev->resource[0].end; in tusb_probe()
1231 musb_resources[0].flags = pdev->resource[0].flags; in tusb_probe()
1233 musb_resources[1].name = pdev->resource[1].name; in tusb_probe()
1234 musb_resources[1].start = pdev->resource[1].start; in tusb_probe()
1235 musb_resources[1].end = pdev->resource[1].end; in tusb_probe()
1236 musb_resources[1].flags = pdev->resource[1].flags; in tusb_probe()
1238 musb_resources[2].name = pdev->resource[2].name; in tusb_probe()
1239 musb_resources[2].start = pdev->resource[2].start; in tusb_probe()
1240 musb_resources[2].end = pdev->resource[2].end; in tusb_probe()
1241 musb_resources[2].flags = pdev->resource[2].flags; in tusb_probe()
1244 pinfo.parent = &pdev->dev; in tusb_probe()
1250 glue->musb = musb = platform_device_register_full(&pinfo); in tusb_probe()
1253 dev_err(&pdev->dev, "failed to register musb device: %d\n", ret); in tusb_probe()
1264 platform_device_unregister(glue->musb); in tusb_remove()
1265 usb_phy_generic_unregister(glue->phy); in tusb_remove()
1274 .name = "musb-tusb",