2 * Faraday USB 2.0 EHCI Controller
4 * (C) Copyright 2010 Faraday Technology
7 * SPDX-License-Identifier: GPL-2.0+
13 #include <usb/fusbh200.h>
14 #include <usb/fotg210.h>
18 #ifndef CONFIG_USB_EHCI_BASE_LIST
19 #define CONFIG_USB_EHCI_BASE_LIST { CONFIG_USB_EHCI_BASE }
22 union ehci_faraday_regs {
23 struct fusbh200_regs usb;
24 struct fotg210_regs otg;
27 static inline int ehci_is_fotg2xx(union ehci_faraday_regs *regs)
29 return !readl(®s->usb.easstr);
33 * Create the appropriate control structures to manage
34 * a new EHCI host controller.
36 int ehci_hcd_init(int index, enum usb_init_type init,
37 struct ehci_hccr **ret_hccr, struct ehci_hcor **ret_hcor)
39 struct ehci_hccr *hccr;
40 struct ehci_hcor *hcor;
41 union ehci_faraday_regs *regs;
42 uint32_t base_list[] = CONFIG_USB_EHCI_BASE_LIST;
44 if (index < 0 || index >= ARRAY_SIZE(base_list))
46 regs = (void __iomem *)base_list[index];
47 hccr = (struct ehci_hccr *)®s->usb.hccr;
48 hcor = (struct ehci_hcor *)®s->usb.hcor;
50 if (ehci_is_fotg2xx(regs)) {
51 /* A-device bus reset */
52 /* ... Power off A-device */
53 setbits_le32(®s->otg.otgcsr, OTGCSR_A_BUSDROP);
54 /* ... Drop vbus and bus traffic */
55 clrbits_le32(®s->otg.otgcsr, OTGCSR_A_BUSREQ);
57 /* ... Power on A-device */
58 clrbits_le32(®s->otg.otgcsr, OTGCSR_A_BUSDROP);
59 /* ... Drive vbus and bus traffic */
60 setbits_le32(®s->otg.otgcsr, OTGCSR_A_BUSREQ);
62 /* Disable OTG & DEV interrupts, triggered at level-high */
63 writel(IMR_IRQLH | IMR_OTG | IMR_DEV, ®s->otg.imr);
64 /* Clear all interrupt status */
65 writel(ISR_HOST | ISR_OTG | ISR_DEV, ®s->otg.isr);
67 /* Interrupt=level-high */
68 setbits_le32(®s->usb.bmcsr, BMCSR_IRQLH);
70 clrbits_le32(®s->usb.bmcsr, BMCSR_VBUS_OFF);
71 /* Disable all interrupts */
72 writel(0x00, ®s->usb.bmier);
73 writel(0x1f, ®s->usb.bmisr);
83 * Destroy the appropriate control structures corresponding
84 * the the EHCI host controller.
86 int ehci_hcd_stop(int index)
92 * This ehci_set_usbmode() overrides the weak function
95 void ehci_set_usbmode(int index)
97 /* nothing needs to be done */
101 * This ehci_get_port_speed() overrides the weak function
104 int ehci_get_port_speed(struct ehci_hcor *hcor, uint32_t reg)
106 int spd, ret = PORTSC_PSPD_HS;
107 union ehci_faraday_regs *regs = (void __iomem *)((ulong)hcor - 0x10);
109 if (ehci_is_fotg2xx(regs))
110 spd = OTGCSR_SPD(readl(®s->otg.otgcsr));
112 spd = BMCSR_SPD(readl(®s->usb.bmcsr));
115 case 0: /* full speed */
116 ret = PORTSC_PSPD_FS;
118 case 1: /* low speed */
119 ret = PORTSC_PSPD_LS;
121 case 2: /* high speed */
122 ret = PORTSC_PSPD_HS;
125 printf("ehci-faraday: invalid device speed\n");
133 * This ehci_get_portsc_register() overrides the weak function
136 uint32_t *ehci_get_portsc_register(struct ehci_hcor *hcor, int port)
138 /* Faraday EHCI has one and only one portsc register */
140 /* Printing the message would cause a scan failure! */
141 debug("The request port(%d) is not configured\n", port);
145 /* Faraday EHCI PORTSC register offset is 0x20 from hcor */
146 return (uint32_t *)((uint8_t *)hcor + 0x20);