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
82 * @portnum: port index num based one
83 * @power_is_on: port's power state
84 * @did_runtime_put: port has done pm_runtime_put().
87 struct usb_device
*child
;
89 struct dev_state
*port_owner
;
90 enum usb_port_connect_type connect_type
;
92 unsigned power_is_on
:1;
93 unsigned did_runtime_put
:1;
96 #define to_usb_port(_dev) \
97 container_of(_dev, struct usb_port, dev)
99 extern int usb_hub_create_port_device(struct usb_hub
*hub
,
101 extern void usb_hub_remove_port_device(struct usb_hub
*hub
,
103 extern int usb_hub_set_port_power(struct usb_device
*hdev
,
104 int port1
, bool set
);
105 extern struct usb_hub
*usb_hub_to_struct_hub(struct usb_device
*hdev
);
106 extern int hub_port_debounce(struct usb_hub
*hub
, int port1
,
107 bool must_be_connected
);
108 extern int usb_clear_port_feature(struct usb_device
*hdev
,
109 int port1
, int feature
);
111 static inline int hub_port_debounce_be_connected(struct usb_hub
*hub
,
114 return hub_port_debounce(hub
, port1
, true);
117 static inline int hub_port_debounce_be_stable(struct usb_hub
*hub
,
120 return hub_port_debounce(hub
, port1
, false);