Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 289 insertions, 0 deletions

diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c
new file mode 100644
index 00000000000..814d2be4ee7
--- /dev/null
+++ b/drivers/usb/host/ohci-sa1111.c
@@ -0,0 +1,289 @@
+/*
+ * 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 Rusell King et al.
+ *
+ * This file is licenced under the GPL.
+ */
+ 
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/arch/assabet.h>
+#include <asm/arch/badge4.h>
+#include <asm/hardware/sa1111.h>
+
+#ifndef CONFIG_SA1111
+#error "This file is SA-1111 bus glue.  CONFIG_SA1111 must be defined."
+#endif
+
+extern int usb_disabled(void);
+
+/*-------------------------------------------------------------------------*/
+
+static void sa1111_start_hc(struct sa1111_dev *dev)
+{
+	unsigned int usb_rst = 0;
+
+	printk(KERN_DEBUG __FILE__ 
+	       ": starting SA-1111 OHCI USB Controller\n");
+
+#ifdef CONFIG_SA1100_BADGE4
+	if (machine_is_badge4()) {
+		badge4_set_5V(BADGE4_5V_USB, 1);
+	}
+#endif
+
+	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 + SA1111_USB_RESET);
+
+	/*
+	 * Now, carefully enable the USB clock, and take
+	 * the USB host controller out of reset.
+	 */
+	sa1111_enable_device(dev);
+	udelay(11);
+	sa1111_writel(usb_rst, dev->mapbase + SA1111_USB_RESET);
+}
+
+static void sa1111_stop_hc(struct sa1111_dev *dev)
+{
+	unsigned int usb_rst;
+	printk(KERN_DEBUG __FILE__ 
+	       ": stopping SA-1111 OHCI USB Controller\n");
+
+	/*
+	 * Put the USB host controller into reset.
+	 */
+	usb_rst = sa1111_readl(dev->mapbase + SA1111_USB_RESET);
+	sa1111_writel(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET,
+		      dev->mapbase + SA1111_USB_RESET);
+
+	/*
+	 * Stop the USB clock.
+	 */
+	sa1111_disable_device(dev);
+
+#ifdef CONFIG_SA1100_BADGE4
+	if (machine_is_badge4()) {
+		/* Disable power to the USB bus */
+		badge4_set_5V(BADGE4_5V_USB, 0);
+	}
+#endif
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+#if 0
+static void dump_hci_status(struct usb_hcd *hcd, const char *label)
+{
+	unsigned long status = sa1111_readl(hcd->regs + SA1111_USB_STATUS);
+
+	dbg ("%s USB_STATUS = { %s%s%s%s%s}", 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
+
+/*-------------------------------------------------------------------------*/
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+
+/**
+ * usb_hcd_sa1111_probe - initialize SA-1111-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ *
+ * Store this function in the HCD's struct pci_driver as probe().
+ */
+int usb_hcd_sa1111_probe (const struct hc_driver *driver,
+			  struct sa1111_dev *dev)
+{
+	struct usb_hcd *hcd;
+	int retval;
+
+	hcd = usb_create_hcd (driver, &dev->dev, "sa1111");
+	if (!hcd)
+		return -ENOMEM;
+	hcd->rsrc_start = dev->res.start;
+	hcd->rsrc_len = dev->res.end - dev->res.start + 1;
+
+	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+		dbg("request_mem_region failed");
+		retval = -EBUSY;
+		goto err1;
+	}
+	hcd->regs = dev->mapbase;
+
+	sa1111_start_hc(dev);
+	ohci_hcd_init(hcd_to_ohci(hcd));
+
+	retval = usb_add_hcd(hcd, dev->irq[1], SA_INTERRUPT);
+	if (retval == 0)
+		return retval;
+
+	sa1111_stop_hc(dev);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ err1:
+	usb_put_hcd(hcd);
+	return retval;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_sa1111_remove - shutdown processing for SA-1111-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_sa1111_probe(), first invoking
+ * the HCD's stop() method.  It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+void usb_hcd_sa1111_remove (struct usb_hcd *hcd, struct sa1111_dev *dev)
+{
+	usb_remove_hcd(hcd);
+	sa1111_stop_hc(dev);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+	usb_put_hcd(hcd);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int __devinit
+ohci_sa1111_start (struct usb_hcd *hcd)
+{
+	struct ohci_hcd	*ohci = hcd_to_ohci (hcd);
+	int		ret;
+
+	if ((ret = ohci_init(ohci)) < 0)
+		return ret;
+
+	if ((ret = ohci_run (ohci)) < 0) {
+		err ("can't start %s", hcd->self.bus_name);
+		ohci_stop (hcd);
+		return ret;
+	}
+	return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+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
+	 */
+	.start =		ohci_sa1111_start,
+#ifdef	CONFIG_PM
+	/* suspend:		ohci_sa1111_suspend,  -- tbd */
+	/* resume:		ohci_sa1111_resume,   -- tbd */
+#endif
+	.stop =			ohci_stop,
+
+	/*
+	 * 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_USB_SUSPEND
+	.hub_suspend =		ohci_hub_suspend,
+	.hub_resume =		ohci_hub_resume,
+#endif
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int ohci_hcd_sa1111_drv_probe(struct sa1111_dev *dev)
+{
+	int ret;
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	ret = usb_hcd_sa1111_probe(&ohci_sa1111_hc_driver, dev);
+	return ret;
+}
+
+static int ohci_hcd_sa1111_drv_remove(struct sa1111_dev *dev)
+{
+	struct usb_hcd *hcd = sa1111_get_drvdata(dev);
+
+	usb_hcd_sa1111_remove(hcd, dev);
+	return 0;
+}
+
+static struct sa1111_driver ohci_hcd_sa1111_driver = {
+	.drv = {
+		.name	= "sa1111-ohci",
+	},
+	.devid		= SA1111_DEVID_USB,
+	.probe		= ohci_hcd_sa1111_drv_probe,
+	.remove		= ohci_hcd_sa1111_drv_remove,
+};
+
+static int __init ohci_hcd_sa1111_init (void)
+{
+	dbg (DRIVER_INFO " (SA-1111)");
+	dbg ("block sizes: ed %d td %d",
+		sizeof (struct ed), sizeof (struct td));
+
+	return sa1111_driver_register(&ohci_hcd_sa1111_driver);
+}
+
+static void __exit ohci_hcd_sa1111_cleanup (void)
+{
+	sa1111_driver_unregister(&ohci_hcd_sa1111_driver);
+}
+
+module_init (ohci_hcd_sa1111_init);
+module_exit (ohci_hcd_sa1111_cleanup);