--- /dev/null
+From 1be00523336ac484c52681f838dfb8a76e8531cd Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 26 Nov 2011 21:28:56 +0100
+Subject: [PATCH 182/186] USB: EHCI: Add a generic platform device driver
+
+This adds a generic driver for platform devices. It works like the PCI
+driver and is based on it. This is for devices which do not have an own
+bus but their EHCI controller works like a PCI controller. It will be
+used for the Broadcom bcma and ssb USB EHCI controller.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/usb/host/Kconfig | 10 ++
+ drivers/usb/host/ehci-hcd.c | 5 +
+ drivers/usb/host/ehci-platform.c | 199 ++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 214 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/usb/host/ehci-platform.c
+
+--- a/drivers/usb/host/Kconfig
++++ b/drivers/usb/host/Kconfig
+@@ -388,6 +388,16 @@ config USB_OHCI_HCD_PLATFORM
+
+ If unsure, say N.
+
++config USB_EHCI_HCD_PLATFORM
++ bool "Generic EHCI driver for a platform device"
++ depends on USB_EHCI_HCD && EXPERIMENTAL
++ default n
++ ---help---
++ Adds an EHCI host driver for a generic platform device, which
++ provieds a memory space and an irq.
++
++ If unsure, say N.
++
+ config USB_OHCI_BIG_ENDIAN_DESC
+ bool
+ depends on USB_OHCI_HCD
+--- a/drivers/usb/host/ehci-hcd.c
++++ b/drivers/usb/host/ehci-hcd.c
+@@ -1329,6 +1329,11 @@ MODULE_LICENSE ("GPL");
+ #define PLATFORM_DRIVER ehci_xls_driver
+ #endif
+
++#ifdef CONFIG_USB_EHCI_HCD_PLATFORM
++#include "ehci-platform.c"
++#define PLATFORM_DRIVER ehci_platform_driver
++#endif
++
+ #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
+ !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
+ !defined(XILINX_OF_PLATFORM_DRIVER)
+--- /dev/null
++++ b/drivers/usb/host/ehci-platform.c
+@@ -0,0 +1,199 @@
++/*
++ * 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/hci_driver.h>
++
++static int ehci_platform_reset(struct usb_hcd *hcd)
++{
++ struct platform_device *pdev = to_platform_device(hcd->self.controller);
++ struct usb_hci_pdata *pdata = pdev->dev.platform_data;
++ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
++ int caps_offset = 0;
++ int flags = 0;
++ int retval;
++
++ if (pdata) {
++ caps_offset = pdata->caps_offset;
++ flags = pdata->flags;
++ }
++
++ if (flags & USB_HCI_PDATA_HAS_TT_SET)
++ hcd->has_tt = pdata->has_tt;
++
++ ehci->caps = hcd->regs + caps_offset;
++ retval = ehci_setup(hcd);
++ if (retval)
++ return retval;
++
++ if (flags & USB_HCI_PDATA_PORT_POWER_SET)
++ ehci_port_power(ehci, pdata->power_set_is_on);
++
++ 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;
++
++ 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,
++ }
++};
projects / openwrt / staging / dedeckeh.git / blobdiff