Linux-2.6.12-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, 284 insertions, 0 deletions

diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c
new file mode 100644
index 00000000000..3981bf15c8c
--- /dev/null
+++ b/drivers/usb/host/ohci-au1xxx.c
@@ -0,0 +1,284 @@
+/*
+ * 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
+ *
+ * Bus Glue for AMD Alchemy Au1xxx
+ *
+ * Written by Christopher Hoover <ch@hpl.hp.com>
+ * Based on fragments of previous driver by Rusell King et al.
+ *
+ * Modified for LH7A404 from ohci-sa1111.c
+ *  by Durgesh Pattamatta <pattamattad@sharpsec.com>
+ * Modified for AMD Alchemy Au1xxx
+ *  by Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <asm/mach-au1x00/au1000.h>
+
+#define USBH_ENABLE_BE (1<<0)
+#define USBH_ENABLE_C  (1<<1)
+#define USBH_ENABLE_E  (1<<2)
+#define USBH_ENABLE_CE (1<<3)
+#define USBH_ENABLE_RD (1<<4)
+
+#ifdef __LITTLE_ENDIAN
+#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C)
+#elif __BIG_ENDIAN
+#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C | USBH_ENABLE_BE)
+#else
+#error not byte order defined
+#endif
+
+extern int usb_disabled(void);
+
+/*-------------------------------------------------------------------------*/
+
+static void au1xxx_start_hc(struct platform_device *dev)
+{
+	printk(KERN_DEBUG __FILE__
+		": starting Au1xxx OHCI USB Controller\n");
+
+	/* enable host controller */
+	au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG);
+	udelay(1000);
+	au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG);
+	udelay(1000);
+
+	/* wait for reset complete (read register twice; see au1500 errata) */
+	while (au_readl(USB_HOST_CONFIG),
+		!(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD))
+		udelay(1000);
+
+	printk(KERN_DEBUG __FILE__
+	": Clock to USB host has been enabled \n");
+}
+
+static void au1xxx_stop_hc(struct platform_device *dev)
+{
+	printk(KERN_DEBUG __FILE__
+	       ": stopping Au1xxx OHCI USB Controller\n");
+
+	/* Disable clock */
+	au_writel(readl((void *)USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+
+/**
+ * usb_hcd_au1xxx_probe - initialize Au1xxx-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.
+ *
+ */
+int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
+			  struct platform_device *dev)
+{
+	int retval;
+	struct usb_hcd *hcd;
+
+	if(dev->resource[1].flags != IORESOURCE_IRQ) {
+		pr_debug ("resource[1] is not IORESOURCE_IRQ");
+		return -ENOMEM;
+	}
+
+	hcd = usb_create_hcd(driver, &dev->dev, "au1xxx");
+	if (!hcd)
+		return -ENOMEM;
+	hcd->rsrc_start = dev->resource[0].start;
+	hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;
+
+	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+		pr_debug("request_mem_region failed");
+		retval = -EBUSY;
+		goto err1;
+	}
+
+	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+	if (!hcd->regs) {
+		pr_debug("ioremap failed");
+		retval = -ENOMEM;
+		goto err2;
+	}
+
+	au1xxx_start_hc(dev);
+	ohci_hcd_init(hcd_to_ohci(hcd));
+
+	retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT);
+	if (retval == 0)
+		return retval;
+
+	au1xxx_stop_hc(dev);
+	iounmap(hcd->regs);
+ err2:
+	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_au1xxx_remove - shutdown processing for Au1xxx-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_au1xxx_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_au1xxx_remove (struct usb_hcd *hcd, struct platform_device *dev)
+{
+	usb_remove_hcd(hcd);
+	au1xxx_stop_hc(dev);
+	iounmap(hcd->regs);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+	usb_put_hcd(hcd);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int __devinit
+ohci_au1xxx_start (struct usb_hcd *hcd)
+{
+	struct ohci_hcd	*ohci = hcd_to_ohci (hcd);
+	int		ret;
+
+	ohci_dbg (ohci, "ohci_au1xxx_start, ohci:%p", ohci);
+
+	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_au1xxx_hc_driver = {
+	.description =		hcd_name,
+	.product_desc =		"Au1xxx OHCI",
+	.hcd_priv_size =	sizeof(struct ohci_hcd),
+
+	/*
+	 * generic hardware linkage
+	 */
+	.irq =			ohci_irq,
+	.flags =		HCD_USB11 | HCD_MEMORY,
+
+	/*
+	 * basic lifecycle operations
+	 */
+	.start =		ohci_au1xxx_start,
+#ifdef	CONFIG_PM
+	/* suspend:		ohci_au1xxx_suspend,  -- tbd */
+	/* resume:		ohci_au1xxx_resume,   -- tbd */
+#endif /*CONFIG_PM*/
+	.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,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int ohci_hcd_au1xxx_drv_probe(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	int ret;
+
+	pr_debug ("In ohci_hcd_au1xxx_drv_probe");
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	ret = usb_hcd_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev);
+	return ret;
+}
+
+static int ohci_hcd_au1xxx_drv_remove(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+	usb_hcd_au1xxx_remove(hcd, pdev);
+	return 0;
+}
+	/*TBD*/
+/*static int ohci_hcd_au1xxx_drv_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+	return 0;
+}
+static int ohci_hcd_au1xxx_drv_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+	return 0;
+}
+*/
+
+static struct device_driver ohci_hcd_au1xxx_driver = {
+	.name		= "au1xxx-ohci",
+	.bus		= &platform_bus_type,
+	.probe		= ohci_hcd_au1xxx_drv_probe,
+	.remove		= ohci_hcd_au1xxx_drv_remove,
+	/*.suspend	= ohci_hcd_au1xxx_drv_suspend, */
+	/*.resume	= ohci_hcd_au1xxx_drv_resume, */
+};
+
+static int __init ohci_hcd_au1xxx_init (void)
+{
+	pr_debug (DRIVER_INFO " (Au1xxx)");
+	pr_debug ("block sizes: ed %d td %d\n",
+		sizeof (struct ed), sizeof (struct td));
+
+	return driver_register(&ohci_hcd_au1xxx_driver);
+}
+
+static void __exit ohci_hcd_au1xxx_cleanup (void)
+{
+	driver_unregister(&ohci_hcd_au1xxx_driver);
+}
+
+module_init (ohci_hcd_au1xxx_init);
+module_exit (ohci_hcd_au1xxx_cleanup);