mirror of https://gitee.com/openkylin/linux.git
272 lines
6.3 KiB
C
272 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-1.0+
|
|
/*
|
|
* OHCI HCD (Host Controller Driver) for USB.
|
|
*
|
|
* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
|
|
* (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
|
|
* (C) Copyright 2002 Hewlett-Packard Company
|
|
*
|
|
* SA1111 Bus Glue
|
|
*
|
|
* Written by Christopher Hoover <ch@hpl.hp.com>
|
|
* Based on fragments of previous driver by Russell King et al.
|
|
*
|
|
* This file is licenced under the GPL.
|
|
*/
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <asm/hardware/sa1111.h>
|
|
|
|
#ifndef CONFIG_SA1111
|
|
#error "This file is SA-1111 bus glue. CONFIG_SA1111 must be defined."
|
|
#endif
|
|
|
|
#define USB_STATUS 0x0118
|
|
#define USB_RESET 0x011c
|
|
#define USB_IRQTEST 0x0120
|
|
|
|
#define USB_RESET_FORCEIFRESET (1 << 0)
|
|
#define USB_RESET_FORCEHCRESET (1 << 1)
|
|
#define USB_RESET_CLKGENRESET (1 << 2)
|
|
#define USB_RESET_SIMSCALEDOWN (1 << 3)
|
|
#define USB_RESET_USBINTTEST (1 << 4)
|
|
#define USB_RESET_SLEEPSTBYEN (1 << 5)
|
|
#define USB_RESET_PWRSENSELOW (1 << 6)
|
|
#define USB_RESET_PWRCTRLLOW (1 << 7)
|
|
|
|
#define USB_STATUS_IRQHCIRMTWKUP (1 << 7)
|
|
#define USB_STATUS_IRQHCIBUFFACC (1 << 8)
|
|
#define USB_STATUS_NIRQHCIM (1 << 9)
|
|
#define USB_STATUS_NHCIMFCLR (1 << 10)
|
|
#define USB_STATUS_USBPWRSENSE (1 << 11)
|
|
|
|
#if 0
|
|
static void dump_hci_status(struct usb_hcd *hcd, const char *label)
|
|
{
|
|
unsigned long status = readl_relaxed(hcd->regs + USB_STATUS);
|
|
|
|
printk(KERN_DEBUG "%s USB_STATUS = { %s%s%s%s%s}\n", label,
|
|
((status & USB_STATUS_IRQHCIRMTWKUP) ? "IRQHCIRMTWKUP " : ""),
|
|
((status & USB_STATUS_IRQHCIBUFFACC) ? "IRQHCIBUFFACC " : ""),
|
|
((status & USB_STATUS_NIRQHCIM) ? "" : "IRQHCIM "),
|
|
((status & USB_STATUS_NHCIMFCLR) ? "" : "HCIMFCLR "),
|
|
((status & USB_STATUS_USBPWRSENSE) ? "USBPWRSENSE " : ""));
|
|
}
|
|
#endif
|
|
|
|
static int ohci_sa1111_reset(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
|
|
|
|
ohci_hcd_init(ohci);
|
|
return ohci_init(ohci);
|
|
}
|
|
|
|
static int ohci_sa1111_start(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
|
|
int ret;
|
|
|
|
ret = ohci_run(ohci);
|
|
if (ret < 0) {
|
|
ohci_err(ohci, "can't start\n");
|
|
ohci_stop(hcd);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static const struct hc_driver ohci_sa1111_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "SA-1111 OHCI",
|
|
.hcd_priv_size = sizeof(struct ohci_hcd),
|
|
|
|
/*
|
|
* generic hardware linkage
|
|
*/
|
|
.irq = ohci_irq,
|
|
.flags = HCD_USB11 | HCD_MEMORY,
|
|
|
|
/*
|
|
* basic lifecycle operations
|
|
*/
|
|
.reset = ohci_sa1111_reset,
|
|
.start = ohci_sa1111_start,
|
|
.stop = ohci_stop,
|
|
.shutdown = ohci_shutdown,
|
|
|
|
/*
|
|
* managing i/o requests and associated device resources
|
|
*/
|
|
.urb_enqueue = ohci_urb_enqueue,
|
|
.urb_dequeue = ohci_urb_dequeue,
|
|
.endpoint_disable = ohci_endpoint_disable,
|
|
|
|
/*
|
|
* scheduling support
|
|
*/
|
|
.get_frame_number = ohci_get_frame,
|
|
|
|
/*
|
|
* root hub support
|
|
*/
|
|
.hub_status_data = ohci_hub_status_data,
|
|
.hub_control = ohci_hub_control,
|
|
#ifdef CONFIG_PM
|
|
.bus_suspend = ohci_bus_suspend,
|
|
.bus_resume = ohci_bus_resume,
|
|
#endif
|
|
.start_port_reset = ohci_start_port_reset,
|
|
};
|
|
|
|
static int sa1111_start_hc(struct sa1111_dev *dev)
|
|
{
|
|
unsigned int usb_rst = 0;
|
|
int ret;
|
|
|
|
dev_dbg(&dev->dev, "starting SA-1111 OHCI USB Controller\n");
|
|
|
|
if (machine_is_xp860() ||
|
|
machine_is_assabet() ||
|
|
machine_is_pfs168() ||
|
|
machine_is_badge4())
|
|
usb_rst = USB_RESET_PWRSENSELOW | USB_RESET_PWRCTRLLOW;
|
|
|
|
/*
|
|
* Configure the power sense and control lines. Place the USB
|
|
* host controller in reset.
|
|
*/
|
|
writel_relaxed(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET,
|
|
dev->mapbase + USB_RESET);
|
|
|
|
/*
|
|
* Now, carefully enable the USB clock, and take
|
|
* the USB host controller out of reset.
|
|
*/
|
|
ret = sa1111_enable_device(dev);
|
|
if (ret == 0) {
|
|
udelay(11);
|
|
writel_relaxed(usb_rst, dev->mapbase + USB_RESET);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void sa1111_stop_hc(struct sa1111_dev *dev)
|
|
{
|
|
unsigned int usb_rst;
|
|
|
|
dev_dbg(&dev->dev, "stopping SA-1111 OHCI USB Controller\n");
|
|
|
|
/*
|
|
* Put the USB host controller into reset.
|
|
*/
|
|
usb_rst = readl_relaxed(dev->mapbase + USB_RESET);
|
|
writel_relaxed(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET,
|
|
dev->mapbase + USB_RESET);
|
|
|
|
/*
|
|
* Stop the USB clock.
|
|
*/
|
|
sa1111_disable_device(dev);
|
|
}
|
|
|
|
/**
|
|
* ohci_hcd_sa1111_probe - initialize SA-1111-based HCDs
|
|
*
|
|
* Allocates basic resources for this USB host controller, and
|
|
* then invokes the start() method for the HCD associated with it.
|
|
*/
|
|
static int ohci_hcd_sa1111_probe(struct sa1111_dev *dev)
|
|
{
|
|
struct usb_hcd *hcd;
|
|
int ret, irq;
|
|
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
/*
|
|
* We don't call dma_set_mask_and_coherent() here because the
|
|
* DMA mask has already been appropraitely setup by the core
|
|
* SA-1111 bus code (which includes bug workarounds.)
|
|
*/
|
|
|
|
hcd = usb_create_hcd(&ohci_sa1111_hc_driver, &dev->dev, "sa1111");
|
|
if (!hcd)
|
|
return -ENOMEM;
|
|
|
|
hcd->rsrc_start = dev->res.start;
|
|
hcd->rsrc_len = resource_size(&dev->res);
|
|
|
|
irq = sa1111_get_irq(dev, 1);
|
|
if (irq <= 0) {
|
|
ret = irq ? : -ENXIO;
|
|
goto err1;
|
|
}
|
|
|
|
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
|
|
dev_dbg(&dev->dev, "request_mem_region failed\n");
|
|
ret = -EBUSY;
|
|
goto err1;
|
|
}
|
|
|
|
hcd->regs = dev->mapbase;
|
|
|
|
ret = sa1111_start_hc(dev);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
ret = usb_add_hcd(hcd, irq, 0);
|
|
if (ret == 0) {
|
|
device_wakeup_enable(hcd->self.controller);
|
|
return ret;
|
|
}
|
|
|
|
sa1111_stop_hc(dev);
|
|
err2:
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
err1:
|
|
usb_put_hcd(hcd);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ohci_hcd_sa1111_remove - shutdown processing for SA-1111-based HCDs
|
|
* @dev: USB Host Controller being removed
|
|
*
|
|
* Reverses the effect of ohci_hcd_sa1111_probe(), first invoking
|
|
* the HCD's stop() method.
|
|
*/
|
|
static int ohci_hcd_sa1111_remove(struct sa1111_dev *dev)
|
|
{
|
|
struct usb_hcd *hcd = sa1111_get_drvdata(dev);
|
|
|
|
usb_remove_hcd(hcd);
|
|
sa1111_stop_hc(dev);
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
usb_put_hcd(hcd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ohci_hcd_sa1111_shutdown(struct device *_dev)
|
|
{
|
|
struct sa1111_dev *dev = to_sa1111_device(_dev);
|
|
struct usb_hcd *hcd = sa1111_get_drvdata(dev);
|
|
|
|
if (test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
|
|
hcd->driver->shutdown(hcd);
|
|
sa1111_stop_hc(dev);
|
|
}
|
|
}
|
|
|
|
static struct sa1111_driver ohci_hcd_sa1111_driver = {
|
|
.drv = {
|
|
.name = "sa1111-ohci",
|
|
.owner = THIS_MODULE,
|
|
.shutdown = ohci_hcd_sa1111_shutdown,
|
|
},
|
|
.devid = SA1111_DEVID_USB,
|
|
.probe = ohci_hcd_sa1111_probe,
|
|
.remove = ohci_hcd_sa1111_remove,
|
|
};
|