// SPDX-License-Identifier: GPL-1.0+ /* * OHCI HCD (Host Controller Driver) for USB. * * (C) Copyright 1999 Roman Weissgaerber <[email protected]> * (C) Copyright 2000-2002 David Brownell <[email protected]> * (C) Copyright 2002 Hewlett-Packard Company * * USB Bus Glue for Samsung S3C2410 * * Written by Christopher Hoover <[email protected]> * Based on fragments of previous driver by Russell King et al. * * Modified for S3C2410 from ohci-sa1111.c, ohci-omap.c and ohci-lh7a40.c * by Ben Dooks, <[email protected]> * Copyright (C) 2004 Simtec Electronics * * Thanks to [email protected] for updates to newer kernels * * This file is licenced under the GPL. */ #include <linux/clk.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/platform_data/usb-ohci-s3c2410.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include "ohci.h" #define valid_port(idx) … /* clock device associated with the hcd */ #define DRIVER_DESC … static struct clk *clk; static struct clk *usb_clk; static struct hc_driver __read_mostly ohci_s3c2410_hc_driver; /* forward definitions */ static void s3c2410_hcd_oc(struct s3c2410_hcd_info *info, int port_oc); /* conversion functions */ static struct s3c2410_hcd_info *to_s3c2410_info(struct usb_hcd *hcd) { … } static void s3c2410_start_hc(struct platform_device *dev, struct usb_hcd *hcd) { … } static void s3c2410_stop_hc(struct platform_device *dev) { … } /* ohci_s3c2410_hub_status_data * * update the status data from the hub with anything that * has been detected by our system */ static int ohci_s3c2410_hub_status_data(struct usb_hcd *hcd, char *buf) { … } /* s3c2410_usb_set_power * * configure the power on a port, by calling the platform device * routine registered with the platform device */ static void s3c2410_usb_set_power(struct s3c2410_hcd_info *info, int port, int to) { … } /* ohci_s3c2410_hub_control * * look at control requests to the hub, and see if we need * to take any action or over-ride the results from the * request. */ static int ohci_s3c2410_hub_control( struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { … } /* s3c2410_hcd_oc * * handle an over-current report */ static void s3c2410_hcd_oc(struct s3c2410_hcd_info *info, int port_oc) { … } /* may be called without controller electrically present */ /* may be called with controller, bus, and devices active */ /* * ohci_hcd_s3c2410_remove - shutdown processing for HCD * @dev: USB Host Controller being removed * * Context: task context, might sleep * * Reverses the effect of ohci_hcd_3c2410_probe(), first invoking * the HCD's stop() method. It is always called from a thread * context, normally "rmmod", "apmd", or something similar. */ static void ohci_hcd_s3c2410_remove(struct platform_device *dev) { … } /* * ohci_hcd_s3c2410_probe - initialize S3C2410-based HCDs * @dev: USB Host Controller to be probed * * 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 ohci_hcd_s3c2410_probe(struct platform_device *dev) { … } /*-------------------------------------------------------------------------*/ #ifdef CONFIG_PM static int ohci_hcd_s3c2410_drv_suspend(struct device *dev) { … } static int ohci_hcd_s3c2410_drv_resume(struct device *dev) { … } #else #define ohci_hcd_s3c2410_drv_suspend … #define ohci_hcd_s3c2410_drv_resume … #endif static const struct dev_pm_ops ohci_hcd_s3c2410_pm_ops = …; static const struct of_device_id ohci_hcd_s3c2410_dt_ids[] = …; MODULE_DEVICE_TABLE(of, ohci_hcd_s3c2410_dt_ids); static struct platform_driver ohci_hcd_s3c2410_driver = …; static int __init ohci_s3c2410_init(void) { … } module_init(…) …; static void __exit ohci_s3c2410_cleanup(void) { … } module_exit(ohci_s3c2410_cleanup); MODULE_DESCRIPTION(…); MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
Codebase Browser
linux