// SPDX-License-Identifier: GPL-2.0 /* * Generic platform ehci driver * * Copyright 2007 Steven Brown <[email protected]> * Copyright 2010-2012 Hauke Mehrtens <[email protected]> * Copyright 2014 Hans de Goede <[email protected]> * * Derived from the ohci-ssb driver * Copyright 2007 Michael Buesch <[email protected]> * * 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 */ #include <linux/acpi.h> #include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/err.h> #include <linux/kernel.h> #include <linux/hrtimer.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/reset.h> #include <linux/sys_soc.h> #include <linux/timer.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/usb/ehci_pdriver.h> #include <linux/usb/of.h> #include "ehci.h" #define DRIVER_DESC … #define EHCI_MAX_CLKS … #define hcd_to_ehci_priv(h) … #define BCM_USB_FIFO_THRESHOLD … struct ehci_platform_priv { … }; static int ehci_platform_reset(struct usb_hcd *hcd) { … } static int ehci_platform_power_on(struct platform_device *dev) { … } static void ehci_platform_power_off(struct platform_device *dev) { … } static struct hc_driver __read_mostly ehci_platform_hc_driver; static const struct ehci_driver_overrides platform_overrides __initconst = …; static struct usb_ehci_pdata ehci_platform_defaults = …; /** * quirk_poll_check_port_status - Poll port_status if the device sticks * @ehci: the ehci hcd pointer * * Since EHCI/OHCI controllers on R-Car Gen3 SoCs are possible to be getting * stuck very rarely after a full/low usb device was disconnected. To * detect such a situation, the controllers require a special way which poll * the EHCI PORTSC register. * * Return: true if the controller's port_status indicated getting stuck */ static bool quirk_poll_check_port_status(struct ehci_hcd *ehci) { … } /** * quirk_poll_rebind_companion - rebind comanion device to recover * @ehci: the ehci hcd pointer * * Since EHCI/OHCI controllers on R-Car Gen3 SoCs are possible to be getting * stuck very rarely after a full/low usb device was disconnected. To * recover from such a situation, the controllers require changing the OHCI * functional state. */ static void quirk_poll_rebind_companion(struct ehci_hcd *ehci) { … } static void quirk_poll_work(struct work_struct *work) { … } static void quirk_poll_timer(struct timer_list *t) { … } static void quirk_poll_init(struct ehci_platform_priv *priv) { … } static void quirk_poll_end(struct ehci_platform_priv *priv) { … } static const struct soc_device_attribute quirk_poll_match[] = …; static int ehci_platform_probe(struct platform_device *dev) { … } static void ehci_platform_remove(struct platform_device *dev) { … } static int __maybe_unused ehci_platform_suspend(struct device *dev) { … } static int __maybe_unused ehci_platform_resume(struct device *dev) { … } static const struct of_device_id vt8500_ehci_ids[] = …; MODULE_DEVICE_TABLE(of, vt8500_ehci_ids); #ifdef CONFIG_ACPI static const struct acpi_device_id ehci_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, ehci_acpi_match); #endif static const struct platform_device_id ehci_platform_table[] = …; MODULE_DEVICE_TABLE(platform, ehci_platform_table); static SIMPLE_DEV_PM_OPS(ehci_platform_pm_ops, ehci_platform_suspend, ehci_platform_resume); static struct platform_driver ehci_platform_driver = …; static int __init ehci_platform_init(void) { … } module_init(…) …; static void __exit ehci_platform_cleanup(void) { … } module_exit(ehci_platform_cleanup); MODULE_DESCRIPTION(…); MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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