+++ /dev/null
-/*
- * Gemini EHCI Host Controller driver
- *
- * Copyright (C) 2014 Roman Yeryomin <roman@advem.lv>
- * Copyright (C) 2012 Tobias Waldvogel
- * based on GPLd code from Sony Computer Entertainment Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- */
-#include <linux/kernel.h>
-#include <linux/hrtimer.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/usb.h>
-#include <linux/usb/hcd.h>
-#include <linux/usb/ehci_pdriver.h>
-
-#include <mach/hardware.h>
-#include <mach/global_reg.h>
-
-#include "ehci.h"
-
-#define DRV_NAME "ehci-fotg2"
-
-#define HCD_MISC 0x40
-
-#define OTGC_SCR 0x80
-#define OTGC_INT_STS 0x84
-#define OTGC_INT_EN 0x88
-
-#define GLOBAL_ISR 0xC0
-#define GLOBAL_ICR 0xC4
-
-#define GLOBAL_INT_POLARITY (1 << 3)
-#define GLOBAL_INT_MASK_HC (1 << 2)
-#define GLOBAL_INT_MASK_OTG (1 << 1)
-#define GLOBAL_INT_MASK_DEV (1 << 0)
-
-#define OTGC_SCR_ID (1 << 21)
-#define OTGC_SCR_CROLE (1 << 20)
-#define OTGC_SCR_VBUS_VLD (1 << 19)
-#define OTGC_SCR_A_SRP_RESP_TYPE (1 << 8)
-#define OTGC_SCR_A_SRP_DET_EN (1 << 7)
-#define OTGC_SCR_A_SET_B_HNP_EN (1 << 6)
-#define OTGC_SCR_A_BUS_DROP (1 << 5)
-#define OTGC_SCR_A_BUS_REQ (1 << 4)
-
-#define OTGC_INT_APLGRMV (1 << 12)
-#define OTGC_INT_BPLGRMV (1 << 11)
-#define OTGC_INT_OVC (1 << 10)
-#define OTGC_INT_IDCHG (1 << 9)
-#define OTGC_INT_RLCHG (1 << 8)
-#define OTGC_INT_AVBUSERR (1 << 5)
-#define OTGC_INT_ASRPDET (1 << 4)
-#define OTGC_INT_BSRPDN (1 << 0)
-
-#define OTGC_INT_A_TYPE ( \
- OTGC_INT_ASRPDET | \
- OTGC_INT_AVBUSERR | \
- OTGC_INT_OVC | \
- OTGC_INT_RLCHG | \
- OTGC_INT_IDCHG | \
- OTGC_INT_APLGRMV \
- )
-#define OTGC_INT_B_TYPE ( \
- OTGC_INT_AVBUSERR | \
- OTGC_INT_OVC | \
- OTGC_INT_RLCHG | \
- OTGC_INT_IDCHG \
- )
-
-
-static void fotg2_otg_init(struct usb_hcd *hcd)
-{
- u32 val;
-
- writel(GLOBAL_INT_POLARITY | GLOBAL_INT_MASK_HC |
- GLOBAL_INT_MASK_OTG | GLOBAL_INT_MASK_DEV,
- hcd->regs + GLOBAL_ICR);
-
- val = readl(hcd->regs + OTGC_SCR);
- val &= ~(OTGC_SCR_A_SRP_RESP_TYPE | OTGC_SCR_A_SRP_DET_EN |
- OTGC_SCR_A_BUS_DROP | OTGC_SCR_A_SET_B_HNP_EN);
- val |= OTGC_SCR_A_BUS_REQ;
- writel(val, hcd->regs + OTGC_SCR);
-
- writel(OTGC_INT_A_TYPE, hcd->regs + OTGC_INT_EN);
-
- /* setup MISC register, fixes timing problems */
- val = readl(hcd->regs + HCD_MISC);
- val |= 0xD;
- writel(val, hcd->regs + HCD_MISC);
-
- writel(~0, hcd->regs + GLOBAL_ISR);
- writel(~0, hcd->regs + OTGC_INT_STS);
-}
-
-static int fotg2_ehci_reset(struct usb_hcd *hcd)
-{
- int retval;
-
- retval = ehci_setup(hcd);
- if (retval)
- return retval;
-
- writel(GLOBAL_INT_POLARITY, hcd->regs + GLOBAL_ICR);
- return 0;
-}
-
-static const struct hc_driver fotg2_ehci_hc_driver = {
- .description = hcd_name,
- .product_desc = "FOTG2 EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_hcd),
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
- .reset = fotg2_ehci_reset,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
- .get_frame_number = ehci_get_frame,
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
-#if defined(CONFIG_PM)
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
-#endif
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
-
-static irqreturn_t fotg2_ehci_irq(int irq, void *data)
-{
- struct usb_hcd *hcd = data;
- u32 icr, sts;
- irqreturn_t retval;
-
- icr = readl(hcd->regs + GLOBAL_ICR);
- writel(GLOBAL_INT_POLARITY | GLOBAL_INT_MASK_HC |
- GLOBAL_INT_MASK_OTG | GLOBAL_INT_MASK_DEV,
- hcd->regs + GLOBAL_ICR);
-
- retval = IRQ_NONE;
-
- sts = ~icr;
- sts &= GLOBAL_INT_MASK_HC | GLOBAL_INT_MASK_OTG | GLOBAL_INT_MASK_DEV;
- sts &= readl(hcd->regs + GLOBAL_ISR);
- writel(sts, hcd->regs + GLOBAL_ISR);
-
- if (unlikely(sts & GLOBAL_INT_MASK_DEV)) {
- ehci_warn(hcd_to_ehci(hcd),
- "Received unexpected irq for device role\n");
- retval = IRQ_HANDLED;
- }
-
- if (unlikely(sts & GLOBAL_INT_MASK_OTG)) {
- u32 otg_sts;
-
- otg_sts = readl(hcd->regs + OTGC_INT_STS);
- writel(otg_sts, hcd->regs + OTGC_INT_STS);
-
- ehci_warn(hcd_to_ehci(hcd),
- "Received unexpected irq for OTG management\n");
- retval = IRQ_HANDLED;
- }
-
- if (sts & GLOBAL_INT_MASK_HC) {
- retval = IRQ_NONE;
- }
-
- writel(icr, hcd->regs + GLOBAL_ICR);
- return retval;
-}
-
-static int fotg2_ehci_probe(struct platform_device *pdev)
-{
- struct usb_hcd *hcd;
- struct resource *res;
- int irq , err;
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- pr_err("no irq provided");
- return irq;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- pr_err("no memory resource provided");
- return -ENXIO;
- }
-
- hcd = usb_create_hcd(&fotg2_ehci_hc_driver, &pdev->dev,
- dev_name(&pdev->dev));
- if (!hcd)
- return -ENOMEM;
-
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
-
- hcd->regs = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(hcd->regs)) {
- err = -ENOMEM;
- goto err_put_hcd;
- }
-
- hcd->has_tt = 1;
- hcd_to_ehci(hcd)->caps = hcd->regs;
-
- fotg2_otg_init(hcd);
-
- err = request_irq(irq, &fotg2_ehci_irq, IRQF_SHARED, "fotg2", hcd);
- if (err)
- goto err_put_hcd;
-
- err = usb_add_hcd(hcd, irq, IRQF_SHARED);
- if (err)
- goto err_put_hcd;
-
- platform_set_drvdata(pdev, hcd);
- return 0;
-
-err_put_hcd:
- usb_put_hcd(hcd);
- return err;
-}
-
-static int fotg2_ehci_remove(struct platform_device *pdev)
-{
- struct usb_hcd *hcd = platform_get_drvdata(pdev);
-
- writel(GLOBAL_INT_POLARITY | GLOBAL_INT_MASK_HC |
- GLOBAL_INT_MASK_OTG | GLOBAL_INT_MASK_DEV,
- hcd->regs + GLOBAL_ICR);
-
- free_irq(hcd->irq, hcd);
- usb_remove_hcd(hcd);
- usb_put_hcd(hcd);
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-MODULE_ALIAS("platform:" DRV_NAME);
-
-static struct platform_driver ehci_fotg2_driver = {
- .probe = fotg2_ehci_probe,
- .remove = fotg2_ehci_remove,
- .driver.name = DRV_NAME,
-};
projects / openwrt / staging / yousong.git / blobdiff