2 * usb hub driver head file
4 * Copyright (C) 1999 Linus Torvalds
5 * Copyright (C) 1999 Johannes Erdfelt
6 * Copyright (C) 1999 Gregory P. Smith
7 * Copyright (C) 2001 Brad Hards (bhards@bigpond.net.au)
8 * Copyright (C) 2012 Intel Corp (tianyu.lan@intel.com)
10 * move struct usb_hub to this file.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
18 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 #include <linux/usb.h>
23 #include <linux/usb/ch11.h>
24 #include <linux/usb/hcd.h>
28 struct device *intfdev; /* the "interface" device */
29 struct usb_device *hdev;
31 struct urb *urb; /* for interrupt polling pipe */
33 /* buffer for urb ... with extra space in case of babble */
36 struct usb_hub_status hub;
37 struct usb_port_status port;
38 } *status; /* buffer for status reports */
39 struct mutex status_mutex; /* for the status buffer */
41 int error; /* last reported error */
42 int nerrors; /* track consecutive errors */
44 struct list_head event_list; /* hubs w/data or errs ready */
45 unsigned long event_bits[1]; /* status change bitmask */
46 unsigned long change_bits[1]; /* ports with logical connect
48 unsigned long busy_bits[1]; /* ports being reset or
50 unsigned long removed_bits[1]; /* ports with a "removed"
52 unsigned long wakeup_bits[1]; /* ports that have signaled
54 #if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */
55 #error event_bits[] is too short!
58 struct usb_hub_descriptor *descriptor; /* class descriptor */
59 struct usb_tt tt; /* Transaction Translator */
61 unsigned mA_per_port; /* current for each child */
63 unsigned limited_power:1;
65 unsigned disconnected:1;
67 unsigned quirk_check_port_auto_suspend:1;
69 unsigned has_indicators:1;
70 u8 indicator[USB_MAXCHILDREN];
71 struct delayed_work leds;
72 struct delayed_work init_work;
73 struct usb_port **ports;
77 * struct usb port - kernel's representation of a usb port
78 * @child: usb device attatched to the port
79 * @dev: generic device interface
80 * @port_owner: port's owner
81 * @connect_type: port's connect type
84 struct usb_device *child;
86 struct dev_state *port_owner;
87 enum usb_port_connect_type connect_type;
90 #define to_usb_port(_dev) \
91 container_of(_dev, struct usb_port, dev)
93 extern int usb_hub_create_port_device(struct usb_hub *hub,
95 extern void usb_hub_remove_port_device(struct usb_hub *hub,