FreeBSD/Linux Kernel Cross Reference
sys/drivers/usb/

	Name	Size	Last modified (GMT)	Description
	Parent directory		2013-02-02 13:04:39
	atm/		2013-02-02 13:06:08
	c67x00/		2013-02-02 13:06:00
	chipidea/		2013-02-02 13:05:54
	class/		2013-02-02 13:06:08
	core/		2013-02-02 13:06:08
	dwc3/		2013-02-02 13:05:54
	early/		2013-02-02 13:05:54
	gadget/		2013-02-02 13:06:07
	host/		2013-02-02 13:06:03
	image/		2013-02-02 13:06:00
	input/		2007-04-02 19:00:43
	misc/		2013-02-02 13:05:59
	mon/		2013-02-02 13:05:59
	musb/		2013-02-02 13:05:56
	net/		2007-04-02 19:00:42
	otg/		2013-02-02 13:05:59
	phy/		2013-02-02 13:05:54
	renesas_usbhs/		2013-02-02 13:05:54
	serial/		2013-02-02 13:05:58
	storage/		2013-02-02 13:05:57
	wusbcore/		2013-02-02 13:05:54
	Kconfig	5623 bytes	2013-02-02 13:01:53
	Makefile	1542 bytes	2012-12-25 01:45:09
	README	2426 bytes	2008-01-26 22:45:10
	usb-common.c	1080 bytes	2012-12-25 01:45:16
	usb-skeleton.c	16621 bytes	2012-12-25 01:45:16

     To understand all the Linux-USB framework, you'll use these resources:
     
         * This source code.  This is necessarily an evolving work, and
           includes kerneldoc that should help you get a current overview.
           ("make pdfdocs", and then look at "usb.pdf" for host side and
           "gadget.pdf" for peripheral side.)  Also, Documentation/usb has
           more information.
     
         * The USB 2.0 specification (from www.usb.org), with supplements
          such as those for USB OTG and the various device classes.
          The USB specification has a good overview chapter, and USB
          peripherals conform to the widely known "Chapter 9".
    
        * Chip specifications for USB controllers.  Examples include
          host controllers (on PCs, servers, and more); peripheral
          controllers (in devices with Linux firmware, like printers or
          cell phones); and hard-wired peripherals like Ethernet adapters.
    
        * Specifications for other protocols implemented by USB peripheral
          functions.  Some are vendor-specific; others are vendor-neutral
          but just standardized outside of the www.usb.org team.
    
    Here is a list of what each subdirectory here is, and what is contained in
    them.
    
    core/           - This is for the core USB host code, including the
                      usbfs files and the hub class driver ("khubd").
    
    host/           - This is for USB host controller drivers.  This
                      includes UHCI, OHCI, EHCI, and others that might
                      be used with more specialized "embedded" systems.
    
    gadget/         - This is for USB peripheral controller drivers and
                      the various gadget drivers which talk to them.
    
    
    Individual USB driver directories.  A new driver should be added to the
    first subdirectory in the list below that it fits into.
    
    image/          - This is for still image drivers, like scanners or
                      digital cameras.
    ../input/       - This is for any driver that uses the input subsystem,
                      like keyboard, mice, touchscreens, tablets, etc.
    ../media/       - This is for multimedia drivers, like video cameras,
                      radios, and any other drivers that talk to the v4l
                      subsystem.
    ../net/         - This is for network drivers.
    serial/         - This is for USB to serial drivers.
    storage/        - This is for USB mass-storage drivers.
    class/          - This is for all USB device drivers that do not fit
                      into any of the above categories, and work for a range
                      of USB Class specified devices. 
    misc/           - This is for all USB device drivers that do not fit
                      into any of the above categories.