linux-sg2042/drivers/usb
Linus Torvalds b4a41ed24c Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: cdc-acm: fix potential null-pointer dereference on disconnect
  USB: cdc-acm: fix potential null-pointer dereference
  USB: cdc-acm: fix memory corruption / panic
  USB: Fix 'bad dma' problem on WDM device disconnect
  usb: wwan: fix compilation without CONFIG_PM_RUNTIME
  USB: uss720 fixup refcount position
  usb: musb: blackfin: fix typo in new bfin_musb_vbus_status func
  usb: musb: blackfin: fix typo in new dev_pm_ops struct
  usb: musb: blackfin: fix typo in platform driver name
  usb: musb: Fix for merge issue
  ehci-hcd: Bug fix: don't set a QH's Halt bit
  USB: Do not pass negative length to snoop_urb()
2011-03-24 10:02:55 -07:00
..
atm USB: ueagle-atm: use system_wq instead of dedicated workqueues 2011-01-22 19:38:26 -08:00
c67x00 usb: makefile cleanup 2010-10-22 10:22:07 -07:00
class USB: cdc-acm: fix potential null-pointer dereference on disconnect 2011-03-23 13:22:02 -07:00
core USB: Do not pass negative length to snoop_urb() 2011-03-23 13:14:16 -07:00
early USB: ehci-dbgp: fix typo in startup message 2011-01-22 19:35:40 -08:00
gadget Merge branch 'remove' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-03-16 19:05:40 -07:00
host Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-03-24 10:02:55 -07:00
image SCSI host lock push-down 2010-11-16 13:33:23 -08:00
misc USB: uss720 fixup refcount position 2011-03-23 13:14:31 -07:00
mon USB: usbmon: fix-up docs and text API for sparse ISO 2011-02-04 11:46:57 -08:00
musb usb: musb: blackfin: fix typo in new bfin_musb_vbus_status func 2011-03-23 13:14:31 -07:00
otg Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2011-03-17 19:28:15 -07:00
serial usb: wwan: fix compilation without CONFIG_PM_RUNTIME 2011-03-23 13:16:06 -07:00
storage Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6 2011-03-16 15:19:35 -07:00
wusbcore USB 3.0 Hub Changes 2011-03-13 18:07:11 -07:00
Kconfig ARM: lh7a40x: remove unmaintained platform support 2011-01-24 19:05:19 +00:00
Makefile USB: drivers/usb/Makefile: conditionally descend to 'early' 2010-08-10 14:35:38 -07:00
README
usb-skeleton.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00

README

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.