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);