// SPDX-License-Identifier: GPL-1.0+ /* * OHCI HCD (Host Controller Driver) for USB. * * Copyright (C) 2004 SAN People (Pty) Ltd. * Copyright (C) 2005 Thibaut VARENE <[email protected]> * * AT91 Bus Glue * * Based on fragments of 2.4 driver by Rick Bronson. * Based on ohci-omap.c * * This file is licenced under the GPL. */ #include <linux/arm-smccc.h> #include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/gpio/consumer.h> #include <linux/platform_device.h> #include <linux/platform_data/atmel.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/mfd/syscon.h> #include <linux/of.h> #include <linux/regmap.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include <soc/at91/atmel-sfr.h> #include "ohci.h" #define valid_port(index) … #define at91_for_each_port(index) … /* interface, function and usb clocks; sometimes also an AHB clock */ #define hcd_to_ohci_at91_priv(h) … #define AT91_MAX_USBH_PORTS … struct at91_usbh_data { … }; struct ohci_at91_priv { … }; /* interface and function clocks; sometimes also an AHB clock */ #define DRIVER_DESC … static struct hc_driver __read_mostly ohci_at91_hc_driver; static const struct ohci_driver_overrides ohci_at91_drv_overrides __initconst = …; /*-------------------------------------------------------------------------*/ static void at91_start_clock(struct ohci_at91_priv *ohci_at91) { … } static void at91_stop_clock(struct ohci_at91_priv *ohci_at91) { … } static void at91_start_hc(struct platform_device *pdev) { … } static void at91_stop_hc(struct platform_device *pdev) { … } /*-------------------------------------------------------------------------*/ static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); static u32 at91_dt_suspend_smc(struct device *dev) { … } static struct regmap *at91_dt_syscon_sfr(void) { … } /* configure so an HC device and id are always provided */ /* always called with process context; sleeping is OK */ /* * usb_hcd_at91_probe - initialize AT91-based HCDs * @driver: Pointer to hc driver instance * @pdev: USB controller to probe * * Context: task context, might sleep * * 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. */ static int usb_hcd_at91_probe(const struct hc_driver *driver, struct platform_device *pdev) { … } /* may be called with controller, bus, and devices active */ /* * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs * @hcd: USB controller to remove * @pdev: Platform device required for cleanup * * Context: task context, might sleep * * Reverses the effect of usb_hcd_at91_probe(), first invoking * the HCD's stop() method. It is always called from a thread * context, "rmmod" or something similar. */ static void usb_hcd_at91_remove(struct usb_hcd *hcd, struct platform_device *pdev) { … } /*-------------------------------------------------------------------------*/ static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int enable) { … } static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port) { … } /* * Update the status data from the hub with the over-current indicator change. */ static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf) { … } static int ohci_at91_port_suspend(struct ohci_at91_priv *ohci_at91, u8 set) { … } /* * Look at the control requests to the root hub and see if we need to override. */ static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { … } /*-------------------------------------------------------------------------*/ static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data) { … } static const struct of_device_id at91_ohci_dt_ids[] = …; MODULE_DEVICE_TABLE(of, at91_ohci_dt_ids); /*-------------------------------------------------------------------------*/ static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) { … } static void ohci_hcd_at91_drv_remove(struct platform_device *pdev) { … } static int __maybe_unused ohci_hcd_at91_drv_suspend(struct device *dev) { … } static int __maybe_unused ohci_hcd_at91_drv_resume(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(ohci_hcd_at91_pm_ops, ohci_hcd_at91_drv_suspend, ohci_hcd_at91_drv_resume); static struct platform_driver ohci_hcd_at91_driver = …; static int __init ohci_at91_init(void) { … } module_init(…) …; static void __exit ohci_at91_cleanup(void) { … } module_exit(ohci_at91_cleanup); MODULE_DESCRIPTION(…); MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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