usb: OHCI/EHCI support for Netlogic XLS processor.

Add supprt for on-chip USB controller for Netlogic XLS MIPS64
SoC processor family.
Changes are:
 - update ehci-hcd.c and ohci-hcd.c to add XLS hcds
 - add ehci-xls.c: EHCI support for Netlogic XLS.
 - add ohci-xls.c: OHCI support for Netlogic XLS.

Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 151 insertions, 0 deletions

diff --git a/drivers/usb/host/ohci-xls.c b/drivers/usb/host/ohci-xls.c
new file mode 100644
index 000000000000..a3a9c6f45b91
--- /dev/null
+++ b/drivers/usb/host/ohci-xls.c
@@ -0,0 +1,151 @@
+/*
+ * OHCI HCD for Netlogic XLS processors.
+ *
+ * (C) Copyright 2011 Netlogic Microsystems Inc.
+ *
+ *  Based on ohci-au1xxx.c, and other Linux OHCI drivers.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/signal.h>
+
+static int ohci_xls_probe_internal(const struct hc_driver *driver,
+                        struct platform_device *dev)
+{
+        struct resource *res;
+        struct usb_hcd *hcd;
+        int retval, irq;
+
+        /* Get our IRQ from an earlier registered Platform Resource */
+        irq = platform_get_irq(dev, 0);
+        if (irq < 0) {
+                dev_err(&dev->dev, "Found HC with no IRQ\n");
+                return -ENODEV;
+        }
+
+        /* Get our Memory Handle */
+        res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(&dev->dev, "MMIO Handle incorrect!\n");
+                return -ENODEV;
+        }
+
+        hcd = usb_create_hcd(driver, &dev->dev, "XLS");
+        if (!hcd) {
+                retval = -ENOMEM;
+                goto err1;
+        }
+        hcd->rsrc_start = res->start;
+        hcd->rsrc_len = res->end - res->start + 1;
+
+        if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
+                        driver->description)) {
+                dev_dbg(&dev->dev, "Controller already in use\n");
+                retval = -EBUSY;
+                goto err2;
+        }
+
+        hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
+        if (hcd->regs == NULL) {
+                dev_dbg(&dev->dev, "error mapping memory\n");
+                retval = -EFAULT;
+                goto err3;
+        }
+
+        retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        if (retval != 0)
+                goto err4;
+        return retval;
+
+err4:
+        iounmap(hcd->regs);
+err3:
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err2:
+        usb_put_hcd(hcd);
+err1:
+        dev_err(&dev->dev, "init fail, %d\n", retval);
+        return retval;
+}
+
+static int ohci_xls_reset(struct usb_hcd *hcd)
+{
+        struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+        ohci_hcd_init(ohci);
+        return ohci_init(ohci);
+}
+
+static int __devinit ohci_xls_start(struct usb_hcd *hcd)
+{
+        struct ohci_hcd *ohci;
+        int ret;
+
+        ohci = hcd_to_ohci(hcd);
+        ret = ohci_run(ohci);
+        if (ret < 0) {
+                err("can't start %s", hcd->self.bus_name);
+                ohci_stop(hcd);
+                return ret;
+        }
+        return 0;
+}
+
+static struct hc_driver ohci_xls_hc_driver = {
+        .description    = hcd_name,
+        .product_desc   = "XLS OHCI Host Controller",
+        .hcd_priv_size  = sizeof(struct ohci_hcd),
+        .irq            = ohci_irq,
+        .flags          = HCD_MEMORY | HCD_USB11,
+        .reset          = ohci_xls_reset,
+        .start          = ohci_xls_start,
+        .stop           = ohci_stop,
+        .shutdown       = ohci_shutdown,
+        .urb_enqueue    = ohci_urb_enqueue,
+        .urb_dequeue    = ohci_urb_dequeue,
+        .endpoint_disable = ohci_endpoint_disable,
+        .get_frame_number = ohci_get_frame,
+        .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 ohci_xls_probe(struct platform_device *dev)
+{
+        int ret;
+
+        pr_debug("In ohci_xls_probe");
+        if (usb_disabled())
+                return -ENODEV;
+        ret = ohci_xls_probe_internal(&ohci_xls_hc_driver, dev);
+        return ret;
+}
+
+static int ohci_xls_remove(struct platform_device *dev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(dev);
+
+        usb_remove_hcd(hcd);
+        iounmap(hcd->regs);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+        usb_put_hcd(hcd);
+        return 0;
+}
+
+static struct platform_driver ohci_xls_driver = {
+        .probe          = ohci_xls_probe,
+        .remove         = ohci_xls_remove,
+        .shutdown       = usb_hcd_platform_shutdown,
+        .driver         = {
+                .name   = "ohci-xls-0",
+                .owner  = THIS_MODULE,
+        },
+};