Greg Kroah-Hartman d6977b51d5 USB: serial: option: clean up urb->status usage 18 years ago
..
atm 87e71b473e USB: cxacru: Cleanup sysfs attribute code 18 years ago
class 97cb95d1c4 usblp: Don't let suspend to kill ->used 18 years ago
core 9f6a93f7bb usb: free DMA mappings if enqueue fails 18 years ago
gadget 3fc154b6b8 USB Gadget driver for Samsung s3c2410 ARM SoC 18 years ago
host 756aa6b3d5 ehci-hub: improved over-current recovery 18 years ago
image e63340ae6b header cleaning: don't include smp_lock.h when not used 18 years ago
misc d4ead16f50 USB: prevent char device open/deregister race 18 years ago
mon ce7cd137fc usbmon: Add class for binary interface 18 years ago
serial d6977b51d5 USB: serial: option: clean up urb->status usage 18 years ago
storage ed76cacbea USB: usb-storage: use kthread_stop() for the control thread 18 years ago
Kconfig 648dcfc805 USB: usb host side can be configured given PCMCIA 18 years ago
Makefile 5d3043586d USB: r8a66597-hcd: host controller driver for R8A66597 18 years ago
README 1da177e4c3 Linux-2.6.12-rc2 20 years ago
usb-skeleton.c 403dfb58c3 USB: usb-skeleton: usb anchor to implement flush 18 years ago

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.