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https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Faraday USB 2.0 EHCI Controller
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*
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* (C) Copyright 2010 Faraday Technology
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* Dante Su <dantesu@faraday-tech.com>
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <usb.h>
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#include <usb/fusbh200.h>
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#include <usb/fotg210.h>
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#include "ehci.h"
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#ifndef CONFIG_USB_EHCI_BASE_LIST
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#define CONFIG_USB_EHCI_BASE_LIST { CONFIG_USB_EHCI_BASE }
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#endif
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union ehci_faraday_regs {
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struct fusbh200_regs usb;
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struct fotg210_regs otg;
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};
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static inline int ehci_is_fotg2xx(union ehci_faraday_regs *regs)
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{
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return !readl(®s->usb.easstr);
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}
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void faraday_ehci_set_usbmode(struct ehci_ctrl *ctrl)
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{
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/* nothing needs to be done */
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}
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int faraday_ehci_get_port_speed(struct ehci_ctrl *ctrl, uint32_t reg)
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{
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int spd, ret = PORTSC_PSPD_HS;
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union ehci_faraday_regs *regs;
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ret = (void __iomem *)((ulong)ctrl->hcor - 0x10);
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if (ehci_is_fotg2xx(regs))
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spd = OTGCSR_SPD(readl(®s->otg.otgcsr));
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else
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spd = BMCSR_SPD(readl(®s->usb.bmcsr));
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switch (spd) {
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case 0: /* full speed */
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ret = PORTSC_PSPD_FS;
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break;
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case 1: /* low speed */
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ret = PORTSC_PSPD_LS;
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break;
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case 2: /* high speed */
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ret = PORTSC_PSPD_HS;
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break;
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default:
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printf("ehci-faraday: invalid device speed\n");
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break;
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}
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return ret;
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}
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uint32_t *faraday_ehci_get_portsc_register(struct ehci_ctrl *ctrl, int port)
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{
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/* Faraday EHCI has one and only one portsc register */
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if (port) {
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/* Printing the message would cause a scan failure! */
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debug("The request port(%d) is not configured\n", port);
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return NULL;
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}
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/* Faraday EHCI PORTSC register offset is 0x20 from hcor */
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return (uint32_t *)((uint8_t *)ctrl->hcor + 0x20);
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}
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static const struct ehci_ops faraday_ehci_ops = {
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.set_usb_mode = faraday_ehci_set_usbmode,
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.get_port_speed = faraday_ehci_get_port_speed,
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.get_portsc_register = faraday_ehci_get_portsc_register,
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};
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/*
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* Create the appropriate control structures to manage
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* a new EHCI host controller.
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*/
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int ehci_hcd_init(int index, enum usb_init_type init,
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struct ehci_hccr **ret_hccr, struct ehci_hcor **ret_hcor)
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{
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struct ehci_hccr *hccr;
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struct ehci_hcor *hcor;
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union ehci_faraday_regs *regs;
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uint32_t base_list[] = CONFIG_USB_EHCI_BASE_LIST;
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if (index < 0 || index >= ARRAY_SIZE(base_list))
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return -1;
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ehci_set_controller_priv(index, NULL, &faraday_ehci_ops);
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regs = (void __iomem *)base_list[index];
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hccr = (struct ehci_hccr *)®s->usb.hccr;
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hcor = (struct ehci_hcor *)®s->usb.hcor;
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if (ehci_is_fotg2xx(regs)) {
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/* A-device bus reset */
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/* ... Power off A-device */
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setbits_le32(®s->otg.otgcsr, OTGCSR_A_BUSDROP);
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/* ... Drop vbus and bus traffic */
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clrbits_le32(®s->otg.otgcsr, OTGCSR_A_BUSREQ);
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mdelay(1);
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/* ... Power on A-device */
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clrbits_le32(®s->otg.otgcsr, OTGCSR_A_BUSDROP);
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/* ... Drive vbus and bus traffic */
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setbits_le32(®s->otg.otgcsr, OTGCSR_A_BUSREQ);
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mdelay(1);
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/* Disable OTG & DEV interrupts, triggered at level-high */
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writel(IMR_IRQLH | IMR_OTG | IMR_DEV, ®s->otg.imr);
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/* Clear all interrupt status */
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writel(ISR_HOST | ISR_OTG | ISR_DEV, ®s->otg.isr);
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} else {
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/* Interrupt=level-high */
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setbits_le32(®s->usb.bmcsr, BMCSR_IRQLH);
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/* VBUS on */
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clrbits_le32(®s->usb.bmcsr, BMCSR_VBUS_OFF);
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/* Disable all interrupts */
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writel(0x00, ®s->usb.bmier);
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writel(0x1f, ®s->usb.bmisr);
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}
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*ret_hccr = hccr;
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*ret_hcor = hcor;
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return 0;
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}
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/*
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* Destroy the appropriate control structures corresponding
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* the the EHCI host controller.
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*/
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int ehci_hcd_stop(int index)
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{
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return 0;
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}
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