Lines Matching +full:need +full:- +full:phy +full:- +full:for +full:- +full:wake
1 // SPDX-License-Identifier: GPL-2.0
9 * - Driver assumes that interface to external host (main CPU) is
10 * configured for NOR FLASH interface instead of VLYNQ serial
24 #include <linux/dma-mapping.h>
32 struct platform_device *phy; member
41 * Checks the revision. We need to use the DMA register as 3.0 does not
42 * have correct versions for TUSB_PRCM_REV or TUSB_INT_CTRL_REV.
46 void __iomem *tbase = musb->ctrl_base; in tusb_get_revision()
63 void __iomem *tbase = musb->ctrl_base; in tusb_print_revision()
66 rev = musb->tusb_revision; in tusb_print_revision()
91 * Workaround for spontaneous WBUS wake-up issue #2 for tusb3.0.
92 * Disables power detection in PHY for the duration of idle.
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.
174 * so both loading and unloading FIFOs need explicit byte counts.
184 for (i = 0; i < (len >> 2); i++) { in tusb_fifo_write_unaligned()
192 /* Write the rest 1 - 3 bytes to FIFO */ in tusb_fifo_write_unaligned()
205 for (i = 0; i < (len >> 2); i++) { in tusb_fifo_read_unaligned()
213 /* Read the rest 1 - 3 bytes from FIFO */ in tusb_fifo_read_unaligned()
221 struct musb *musb = hw_ep->musb; in tusb_write_fifo()
222 void __iomem *ep_conf = hw_ep->conf; in tusb_write_fifo()
223 void __iomem *fifo = hw_ep->fifo; in tusb_write_fifo()
224 u8 epnum = hw_ep->epnum; in tusb_write_fifo()
228 dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n", in tusb_write_fifo()
240 /* Best case is 32bit-aligned destination address */ in tusb_write_fifo()
252 /* Cannot use writesw, fifo is 32-bit */ in tusb_write_fifo()
253 for (i = 0; i < (len >> 2); i++) { in tusb_write_fifo()
271 struct musb *musb = hw_ep->musb; in tusb_read_fifo()
272 void __iomem *ep_conf = hw_ep->conf; in tusb_read_fifo()
273 void __iomem *fifo = hw_ep->fifo; in tusb_read_fifo()
274 u8 epnum = hw_ep->epnum; in tusb_read_fifo()
276 dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n", in tusb_read_fifo()
287 /* Best case is 32bit-aligned destination address */ in tusb_read_fifo()
299 /* Cannot use readsw, fifo is 32-bit */ in tusb_read_fifo()
300 for (i = 0; i < (len >> 2); i++) { in tusb_read_fifo()
319 * at most mA current to be drawn from VBUS during a Default-B session
320 * (that is, while VBUS exceeds 4.4V). In Default-A (including pure host
321 * mode), or low power Default-B sessions, something else supplies power.
327 void __iomem *tbase = musb->ctrl_base; in tusb_draw_power()
331 * (measured on one board) for things other than tps and tusb. in tusb_draw_power()
333 * Boards sharing the CPU clock with CLKIN will need to prevent in tusb_draw_power()
337 * The actual current usage would be very board-specific. For now, in tusb_draw_power()
338 * it's simpler to just use an aggregate (also board-specific). in tusb_draw_power()
340 if (x->otg->default_a || mA < (musb->min_power << 1)) in tusb_draw_power()
345 musb->is_bus_powered = 1; in tusb_draw_power()
348 musb->is_bus_powered = 0; in tusb_draw_power()
353 dev_dbg(musb->controller, "draw max %d mA VBUS\n", mA); in tusb_draw_power()
357 /* workaround for issue 13: change clock during chip idle
363 void __iomem *tbase = musb->ctrl_base; in tusb_set_clock_source()
370 * 1 = PHY 60 MHz (internal PLL) in tusb_set_clock_source()
383 * Idle TUSB6010 until next wake-up event; NOR access always wakes.
386 * events. SW_EN for voltage is handled separately.
390 void __iomem *tbase = musb->ctrl_base; in tusb_allow_idle()
394 && (musb->tusb_revision == TUSB_REV_30)) in tusb_allow_idle()
419 dev_dbg(musb->controller, "idle, wake on %02x\n", wakeup_enables); in tusb_allow_idle()
427 void __iomem *tbase = musb->ctrl_base; in tusb_musb_vbus_status()
434 /* Temporarily enable VBUS detection if it was disabled for in tusb_musb_vbus_status()
457 spin_lock_irqsave(&musb->lock, flags); in musb_do_idle()
459 switch (musb->xceiv->otg->state) { in musb_do_idle()
461 if ((musb->a_wait_bcon != 0) in musb_do_idle()
462 && (musb->idle_timeout == 0 in musb_do_idle()
463 || time_after(jiffies, musb->idle_timeout))) { in musb_do_idle()
464 dev_dbg(musb->controller, "Nothing connected %s, turning off VBUS\n", in musb_do_idle()
465 usb_otg_state_string(musb->xceiv->otg->state)); in musb_do_idle()
474 if (!musb->is_active) { in musb_do_idle()
478 if (is_host_active(musb) && (musb->port1_status >> 16)) in musb_do_idle()
481 if (!musb->gadget_driver) { in musb_do_idle()
492 spin_unlock_irqrestore(&musb->lock, flags); in musb_do_idle()
501 * register access to TUSB6010 because of NOR flash wake-up.
517 if (musb->is_active || ((musb->a_wait_bcon == 0) in tusb_musb_try_idle()
518 && (musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON))) { in tusb_musb_try_idle()
519 dev_dbg(musb->controller, "%s active, deleting timer\n", in tusb_musb_try_idle()
520 usb_otg_state_string(musb->xceiv->otg->state)); in tusb_musb_try_idle()
521 del_timer(&musb->dev_timer); in tusb_musb_try_idle()
527 if (!timer_pending(&musb->dev_timer)) in tusb_musb_try_idle()
530 dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n"); in tusb_musb_try_idle()
536 dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", in tusb_musb_try_idle()
537 usb_otg_state_string(musb->xceiv->otg->state), in tusb_musb_try_idle()
538 (unsigned long)jiffies_to_msecs(timeout - jiffies)); in tusb_musb_try_idle()
539 mod_timer(&musb->dev_timer, timeout); in tusb_musb_try_idle()
551 void __iomem *tbase = musb->ctrl_base; in tusb_musb_set_vbus()
554 struct usb_otg *otg = musb->xceiv->otg; in tusb_musb_set_vbus()
563 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); in tusb_musb_set_vbus()
567 otg->default_a = 1; in tusb_musb_set_vbus()
568 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; in tusb_musb_set_vbus()
581 switch (musb->xceiv->otg->state) { in tusb_musb_set_vbus()
584 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VFALL; in tusb_musb_set_vbus()
587 musb->xceiv->otg->state = OTG_STATE_A_IDLE; in tusb_musb_set_vbus()
590 musb->xceiv->otg->state = OTG_STATE_A_IDLE; in tusb_musb_set_vbus()
592 musb->is_active = 0; in tusb_musb_set_vbus()
593 otg->default_a = 1; in tusb_musb_set_vbus()
596 musb->is_active = 0; in tusb_musb_set_vbus()
597 otg->default_a = 0; in tusb_musb_set_vbus()
598 musb->xceiv->otg->state = OTG_STATE_B_IDLE; in tusb_musb_set_vbus()
610 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); in tusb_musb_set_vbus()
612 dev_dbg(musb->controller, "VBUS %s, devctl %02x otg %3x conf %08x prcm %08x\n", in tusb_musb_set_vbus()
613 usb_otg_state_string(musb->xceiv->otg->state), in tusb_musb_set_vbus()
614 musb_readb(musb->mregs, MUSB_DEVCTL), in tusb_musb_set_vbus()
623 * Note that if a mini-A cable is plugged in the ID line will stay down as
624 * the weak ID pull-up is not able to pull the ID up.
628 void __iomem *tbase = musb->ctrl_base; in tusb_musb_set_mode()
638 case MUSB_HOST: /* Disable PHY ID detect, ground ID */ in tusb_musb_set_mode()
644 case MUSB_PERIPHERAL: /* Disable PHY ID detect, keep ID pull-up on */ in tusb_musb_set_mode()
649 case MUSB_OTG: /* Use PHY ID detection */ in tusb_musb_set_mode()
656 dev_dbg(musb->controller, "Trying to set mode %i\n", musb_mode); in tusb_musb_set_mode()
657 return -EINVAL; in tusb_musb_set_mode()
669 INFO("Cannot be peripheral with mini-A cable " in tusb_musb_set_mode()
680 struct usb_otg *otg = musb->xceiv->otg; in tusb_otg_ints()
687 dev_dbg(musb->controller, "Default-%c\n", default_a ? 'A' : 'B'); in tusb_otg_ints()
688 otg->default_a = default_a; in tusb_otg_ints()
699 /* B-dev state machine: no vbus ~= disconnect */ in tusb_otg_ints()
700 if (!otg->default_a) { in tusb_otg_ints()
702 musb->port1_status &= in tusb_otg_ints()
711 dev_dbg(musb->controller, "Forcing disconnect (no interrupt)\n"); in tusb_otg_ints()
712 if (musb->xceiv->otg->state != OTG_STATE_B_IDLE) { in tusb_otg_ints()
714 musb->xceiv->otg->state = OTG_STATE_B_IDLE; in tusb_otg_ints()
715 musb->int_usb |= MUSB_INTR_DISCONNECT; in tusb_otg_ints()
717 musb->is_active = 0; in tusb_otg_ints()
719 dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", in tusb_otg_ints()
720 usb_otg_state_string(musb->xceiv->otg->state), otg_stat); in tusb_otg_ints()
722 schedule_delayed_work(&musb->irq_work, 0); in tusb_otg_ints()
724 } else /* A-dev state machine */ { in tusb_otg_ints()
725 dev_dbg(musb->controller, "vbus change, %s, otg %03x\n", in tusb_otg_ints()
726 usb_otg_state_string(musb->xceiv->otg->state), otg_stat); in tusb_otg_ints()
728 switch (musb->xceiv->otg->state) { in tusb_otg_ints()
730 dev_dbg(musb->controller, "Got SRP, turning on VBUS\n"); in tusb_otg_ints()
733 /* CONNECT can wake if a_wait_bcon is set */ in tusb_otg_ints()
734 if (musb->a_wait_bcon != 0) in tusb_otg_ints()
735 musb->is_active = 0; in tusb_otg_ints()
737 musb->is_active = 1; in tusb_otg_ints()
740 * OPT FS A TD.4.6 needs few seconds for in tusb_otg_ints()
747 /* ignore; A-session-valid < VBUS_VALID/2, in tusb_otg_ints()
755 if (musb->vbuserr_retry) { in tusb_otg_ints()
756 musb->vbuserr_retry--; in tusb_otg_ints()
759 musb->vbuserr_retry in tusb_otg_ints()
774 dev_dbg(musb->controller, "%s timer, %03x\n", in tusb_otg_ints()
775 usb_otg_state_string(musb->xceiv->otg->state), otg_stat); in tusb_otg_ints()
777 switch (musb->xceiv->otg->state) { in tusb_otg_ints()
779 /* VBUS has probably been valid for a while now, in tusb_otg_ints()
782 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); in tusb_otg_ints()
786 dev_dbg(musb->controller, "devctl %02x\n", devctl); in tusb_otg_ints()
789 musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON; in tusb_otg_ints()
790 musb->is_active = 0; in tusb_otg_ints()
792 + msecs_to_jiffies(musb->a_wait_bcon); in tusb_otg_ints()
800 if (musb->a_wait_bcon != 0) in tusb_otg_ints()
802 + msecs_to_jiffies(musb->a_wait_bcon); in tusb_otg_ints()
812 schedule_delayed_work(&musb->irq_work, 0); in tusb_otg_ints()
820 void __iomem *tbase = musb->ctrl_base; in tusb_musb_interrupt()
824 spin_lock_irqsave(&musb->lock, flags); in tusb_musb_interrupt()
831 dev_dbg(musb->controller, "TUSB IRQ %08x\n", int_src); in tusb_musb_interrupt()
833 musb->int_usb = (u8) int_src; in tusb_musb_interrupt()
835 /* Acknowledge wake-up source interrupts */ in tusb_musb_interrupt()
840 if (musb->tusb_revision == TUSB_REV_30) in tusb_musb_interrupt()
843 /* there are issues re-locking the PLL on wakeup ... */ in tusb_musb_interrupt()
846 for (i = 0xf7f7f7; i > 0xf7f7f7 - 1000; i--) { in tusb_musb_interrupt()
852 dev_dbg(musb->controller, "TUSB NOR not ready\n"); in tusb_musb_interrupt()
861 musb->is_active = 1; in tusb_musb_interrupt()
862 schedule_delayed_work(&musb->irq_work, 0); in tusb_musb_interrupt()
864 dev_dbg(musb->controller, "wake %sactive %02x\n", in tusb_musb_interrupt()
865 musb->is_active ? "" : "in", reg); in tusb_musb_interrupt()
871 del_timer(&musb->dev_timer); in tusb_musb_interrupt()
880 * Just clear the DMA interrupt if it comes as the completion for both in tusb_musb_interrupt()
886 dev_dbg(musb->controller, "DMA IRQ %08x\n", dma_src); in tusb_musb_interrupt()
895 musb->int_rx = (((musb_src >> 16) & 0xffff) << 1); in tusb_musb_interrupt()
896 musb->int_tx = (musb_src & 0xffff); in tusb_musb_interrupt()
898 musb->int_rx = 0; in tusb_musb_interrupt()
899 musb->int_tx = 0; in tusb_musb_interrupt()
905 /* Acknowledge TUSB interrupts. Clear only non-reserved bits */ in tusb_musb_interrupt()
912 spin_unlock_irqrestore(&musb->lock, flags); in tusb_musb_interrupt()
922 * - Check what is unnecessary in MGC_HdrcStart()
926 void __iomem *tbase = musb->ctrl_base; in tusb_musb_enable()
945 /* Only 0 clock cycles for minimum interrupt de-assertion time and in tusb_musb_enable()
950 irq_set_irq_type(musb->nIrq, IRQ_TYPE_LEVEL_LOW); in tusb_musb_enable()
952 /* maybe force into the Default-A OTG state machine */ in tusb_musb_enable()
970 void __iomem *tbase = musb->ctrl_base; in tusb_musb_disable()
980 del_timer(&musb->dev_timer); in tusb_musb_disable()
991 * Note: Settings optimized for OMAP24xx
995 void __iomem *tbase = musb->ctrl_base; in tusb_setup_cpu_interface()
999 * Don't disable GPIO[7:6] as they are needed for wake-up. in tusb_setup_cpu_interface()
1010 * de-assertion time 2 system clocks p 62 */ in tusb_setup_cpu_interface()
1016 /* Set 0 wait count for synchronous burst access */ in tusb_setup_cpu_interface()
1022 void __iomem *tbase = musb->ctrl_base; in tusb_musb_start()
1027 if (musb->board_set_power) in tusb_musb_start()
1028 ret = musb->board_set_power(1); in tusb_musb_start()
1034 spin_lock_irqsave(&musb->lock, flags); in tusb_musb_start()
1042 musb->tusb_revision = tusb_get_revision(musb); in tusb_musb_start()
1044 if (musb->tusb_revision < 2) { in tusb_musb_start()
1046 musb->tusb_revision); in tusb_musb_start()
1050 /* The uint bit for "USB non-PDR interrupt enable" has to be 1 when in tusb_musb_start()
1054 /* Select PHY free running 60MHz as a system clock */ in tusb_musb_start()
1057 /* VBus valid timer 1us, disable DFT/Debug and VLYNQ clocks for in tusb_musb_start()
1077 spin_unlock_irqrestore(&musb->lock, flags); in tusb_musb_start()
1082 spin_unlock_irqrestore(&musb->lock, flags); in tusb_musb_start()
1084 if (musb->board_set_power) in tusb_musb_start()
1085 musb->board_set_power(0); in tusb_musb_start()
1087 return -ENODEV; in tusb_musb_start()
1097 musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); in tusb_musb_init()
1098 if (IS_ERR_OR_NULL(musb->xceiv)) in tusb_musb_init()
1099 return -EPROBE_DEFER; in tusb_musb_init()
1101 pdev = to_platform_device(musb->controller); in tusb_musb_init()
1103 /* dma address for async dma */ in tusb_musb_init()
1105 musb->async = mem->start; in tusb_musb_init()
1107 /* dma address for sync dma */ in tusb_musb_init()
1111 ret = -ENODEV; in tusb_musb_init()
1114 musb->sync = mem->start; in tusb_musb_init()
1116 sync = ioremap(mem->start, resource_size(mem)); in tusb_musb_init()
1118 pr_debug("ioremap for sync failed\n"); in tusb_musb_init()
1119 ret = -ENOMEM; in tusb_musb_init()
1122 musb->sync_va = sync; in tusb_musb_init()
1127 musb->mregs += TUSB_BASE_OFFSET; in tusb_musb_init()
1135 musb->isr = tusb_musb_interrupt; in tusb_musb_init()
1137 musb->xceiv->set_power = tusb_draw_power; in tusb_musb_init()
1140 timer_setup(&musb->dev_timer, musb_do_idle, 0); in tusb_musb_init()
1147 usb_put_phy(musb->xceiv); in tusb_musb_init()
1154 del_timer_sync(&musb->dev_timer); in tusb_musb_exit()
1157 if (musb->board_set_power) in tusb_musb_exit()
1158 musb->board_set_power(0); in tusb_musb_exit()
1160 iounmap(musb->sync_va); in tusb_musb_exit()
1162 usb_put_phy(musb->xceiv); in tusb_musb_exit()
1194 .name = "musb-hdrc",
1202 struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); in tusb_probe()
1208 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); in tusb_probe()
1210 return -ENOMEM; in tusb_probe()
1212 glue->dev = &pdev->dev; in tusb_probe()
1214 pdata->platform_ops = &tusb_ops; in tusb_probe()
1222 musb_resources[0].name = pdev->resource[0].name; in tusb_probe()
1223 musb_resources[0].start = pdev->resource[0].start; in tusb_probe()
1224 musb_resources[0].end = pdev->resource[0].end; in tusb_probe()
1225 musb_resources[0].flags = pdev->resource[0].flags; in tusb_probe()
1227 musb_resources[1].name = pdev->resource[1].name; in tusb_probe()
1228 musb_resources[1].start = pdev->resource[1].start; in tusb_probe()
1229 musb_resources[1].end = pdev->resource[1].end; in tusb_probe()
1230 musb_resources[1].flags = pdev->resource[1].flags; in tusb_probe()
1232 musb_resources[2].name = pdev->resource[2].name; in tusb_probe()
1233 musb_resources[2].start = pdev->resource[2].start; in tusb_probe()
1234 musb_resources[2].end = pdev->resource[2].end; in tusb_probe()
1235 musb_resources[2].flags = pdev->resource[2].flags; in tusb_probe()
1238 pinfo.parent = &pdev->dev; in tusb_probe()
1244 glue->musb = musb = platform_device_register_full(&pinfo); in tusb_probe()
1247 dev_err(&pdev->dev, "failed to register musb device: %d\n", ret); in tusb_probe()
1258 platform_device_unregister(glue->musb); in tusb_remove()
1259 usb_phy_generic_unregister(glue->phy); in tusb_remove()
1268 .name = "musb-tusb",