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linux-next/drivers/usb/host/ohci-sa1111.c
Peter Chen 3c9740a117 usb: hcd: move controller wakeup setting initialization to individual driver 
Individual controller driver has different requirement for wakeup
setting, so move it from core to itself. In order to align with
current etting the default wakeup setting is enabled (except for
chipidea host).

Pass compile test with below commands:
	make O=outout/all allmodconfig
	make -j$CPU_NUM O=outout/all drivers/usb

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-08 18:06:46 -08:00

266 lines
6.2 KiB
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/*
* 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 <mach/hardware.h>
#include <asm/mach-types.h>
#include <mach/assabet.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 = sa1111_readl(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_has_neponset() ||
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.
*/
sa1111_writel(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);
sa1111_writel(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 = sa1111_readl(dev->mapbase + USB_RESET);
sa1111_writel(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;
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);
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, dev->irq[1], 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 sa1111_dev *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,
},
.devid = SA1111_DEVID_USB,
.probe = ohci_hcd_sa1111_probe,
.remove = ohci_hcd_sa1111_remove,
.shutdown = ohci_hcd_sa1111_shutdown,
};
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