hub.h

/*
 * hub.h -- USB HUB definitions.
 *
 * Copyright (C) Youness Alaoui (KaKaRoTo)
 *
 * This software is distributed under the terms of the GNU General Public
 * License ("GPL") version 3, as published by the Free Software Foundation.
 *
 * This file holds USB constants and structures defined
 * by the USB Device Class Definition for HUB Devices.
 *
 * This code is based in part on:
 *
 * USB MIDI Gadget Driver, Copyright (C) 2006 Thumtronics Pty Ltd.
 */

#ifndef __LINUX_USB_HUB_H
#define __LINUX_USB_HUB_H

#include <linux/timer.h>
#include <linux/jiffies.h>
#include <linux/types.h>

#define USB_DT_CS_HUB 0x29

/* 11.23.2.1  Class-Specific AC Interface Descriptor */
struct usb_hub_header_descriptor {
        __u8  bLength;                  /* 8+n */
        __u8  bDescriptorType;          /* USB_DT_CS_HUB */
        __u8  bNbrPorts;                /* n */
        __le16 wHubCharacteristics;     /* hub characteristics */
        __u8  bPwrOn2PwrGood;           /* ? */
        __u8  bHubContrCurrent;         /* ? */
        __u8  DeviceRemovable;          /* [n/8] */
        __u8  PortPwrCtrlMask;          /* [n/8] */
} __attribute__ ((packed));

#define USB_DT_HUB_HEADER_SIZE(n)       (sizeof(struct usb_hub_header_descriptor))


#define PORT_STAT_CONNECTION    0x0001
#define PORT_STAT_ENABLE        0x0002
#define PORT_STAT_RESET         0x0010
#define PORT_STAT_POWER         0x0100
#define PORT_STAT_LOW_SPEED     0x0200
#define PORT_STAT_HIGH_SPEED    0x0400

#define PORT_STAT_C_CONNECTION  0x0001
#define PORT_STAT_C_RESET       0x0010


struct hub_port {
  u16 status;
  u16 change;
};

#endif /* __LINUX_USB_HUB_H */