--- /dev/null
+/*
+ * Generic platform ehci driver
+ *
+ * Copyright 2007 Steven Brown <sbrown@cortland.com>
+ * Copyright 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Derived from the ohci-ssb driver
+ * Copyright 2007 Michael Buesch <m@bues.ch>
+ *
+ * Derived from the EHCI-PCI driver
+ * Copyright (c) 2000-2004 by David Brownell
+ *
+ * Derived from the ohci-pci driver
+ * Copyright 1999 Roman Weissgaerber
+ * Copyright 2000-2002 David Brownell
+ * Copyright 1999 Linus Torvalds
+ * Copyright 1999 Gregory P. Smith
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+#include <linux/platform_device.h>
+#include <linux/usb/ehci_pdriver.h>
+
+static int ehci_platform_reset(struct usb_hcd *hcd)
+{
+ struct platform_device *pdev = to_platform_device(hcd->self.controller);
+ struct usb_ehci_pdata *pdata = pdev->dev.platform_data;
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int retval;
+
+ hcd->has_tt = pdata->has_tt;
+ ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
+ ehci->big_endian_desc = pdata->big_endian_desc;
+ ehci->big_endian_mmio = pdata->big_endian_mmio;
+
+ ehci->caps = hcd->regs + pdata->caps_offset;
+ retval = ehci_setup(hcd);
+ if (retval)
+ return retval;
+
+ if (pdata->port_power_on)
+ ehci_port_power(ehci, 1);
+ if (pdata->port_power_off)
+ ehci_port_power(ehci, 0);
+
+ return 0;
+}
+
+static const struct hc_driver ehci_platform_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "Generic Platform EHCI Controller",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+
+ .irq = ehci_irq,
+ .flags = HCD_MEMORY | HCD_USB2,
+
+ .reset = ehci_platform_reset,
+ .start = ehci_run,
+ .stop = ehci_stop,
+ .shutdown = ehci_shutdown,
+
+ .urb_enqueue = ehci_urb_enqueue,
+ .urb_dequeue = ehci_urb_dequeue,
+ .endpoint_disable = ehci_endpoint_disable,
+ .endpoint_reset = ehci_endpoint_reset,
+
+ .get_frame_number = ehci_get_frame,
+
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+#if defined(CONFIG_PM)
+ .bus_suspend = ehci_bus_suspend,
+ .bus_resume = ehci_bus_resume,
+#endif
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+
+ .update_device = ehci_update_device,
+
+ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+static int __devinit ehci_platform_probe(struct platform_device *dev)
+{
+ struct usb_hcd *hcd;
+ struct resource *res_mem;
+ int irq;
+ int err = -ENOMEM;
+
+ BUG_ON(!dev->dev.platform_data);
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0) {
+ pr_err("no irq provieded");
+ return irq;
+ }
+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!res_mem) {
+ pr_err("no memory recourse provieded");
+ return -ENXIO;
+ }
+
+ hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
+ dev_name(&dev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ hcd->rsrc_start = res_mem->start;
+ hcd->rsrc_len = resource_size(res_mem);
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ pr_err("controller already in use");
+ err = -EBUSY;
+ goto err_put_hcd;
+ }
+
+ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs)
+ goto err_release_region;
+ err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (err)
+ goto err_iounmap;
+
+ platform_set_drvdata(dev, hcd);
+
+ return err;
+
+err_iounmap:
+ iounmap(hcd->regs);
+err_release_region:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_put_hcd:
+ usb_put_hcd(hcd);
+ return err;
+}
+
+static int __devexit ehci_platform_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);
+ platform_set_drvdata(dev, NULL);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int ehci_platform_suspend(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ bool wakeup = device_may_wakeup(dev);
+
+ ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), wakeup);
+ return 0;
+}
+
+static int ehci_platform_resume(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+ ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd));
+ return 0;
+}
+
+#else /* !CONFIG_PM */
+#define ehci_platform_suspend NULL
+#define ehci_platform_resume NULL
+#endif /* CONFIG_PM */
+
+static const struct platform_device_id ehci_platform_table[] = {
+ { "ehci-platform", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, ehci_platform_table);
+
+static const struct dev_pm_ops ehci_platform_pm_ops = {
+ .suspend = ehci_platform_suspend,
+ .resume = ehci_platform_resume,
+};
+
+static struct platform_driver ehci_platform_driver = {
+ .id_table = ehci_platform_table,
+ .probe = ehci_platform_probe,
+ .remove = __devexit_p(ehci_platform_remove),
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "ehci-platform",
+ .pm = &ehci_platform_pm_ops,
+ }
+};
--- /dev/null
+/*
+ * Copyright (C) 2012 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __USB_CORE_EHCI_PDRIVER_H
+#define __USB_CORE_EHCI_PDRIVER_H
+
+/**
+ * struct usb_ehci_pdata - platform_data for generic ehci driver
+ *
+ * @caps_offset: offset of the EHCI Capability Registers to the start of
+ * the io memory region provided to the driver.
+ * @has_tt: set to 1 if TT is integrated in root hub.
+ * @port_power_on: set to 1 if the controller needs a power up after
+ * initialization.
+ * @port_power_off: set to 1 if the controller needs to be powered down
+ * after initialization.
+ *
+ * These are general configuration options for the EHCI controller. All of
+ * these options are activating more or less workarounds for some hardware.
+ */
+struct usb_ehci_pdata {
+ int caps_offset;
+ unsigned has_tt:1;
+ unsigned has_synopsys_hc_bug:1;
+ unsigned big_endian_desc:1;
+ unsigned big_endian_mmio:1;
+ unsigned port_power_on:1;
+ unsigned port_power_off:1;
+};
+
+#endif /* __USB_CORE_EHCI_PDRIVER_H */
projects / cascardo / linux.git / commitdiff