Dan Williams 0cc6bfe901 USB: Option: let cdc-acm handle Sony Ericsson F3507g / Dell 5530 16 years ago
..
atm eeafa64b7a USB: atm/cxacru, fix lock imbalance 16 years ago
c67x00 76e6f2526f usb/c67x00 endianness annotations 17 years ago
class 228dd05dbf USB: usbtmc: add protocol 1 support 16 years ago
core 6ff1046409 USB: usbfs: keep async URBs until the device file is closed 16 years ago
gadget 54b9ed35ae USB: gadget: fix build error in omap_apollon_2420_defconfig 16 years ago
host 391016f6e2 USB: EHCI: expedite unlinks when the root hub is suspended 16 years ago
image 909b6c3fc2 USB: image/mdc800, fix lock imbalance 16 years ago
misc a08b43aee4 USB: misc/vstusb, fix lock imbalance 16 years ago
mon 7abce6bedc USB: usbmon: Implement compat_ioctl 16 years ago
musb e747951240 USB: musb: fix srp sysfs entry deletion 16 years ago
otg 2bf5fa13fc USB: omap1 ohci buildfix (otg related) 16 years ago
serial 0cc6bfe901 USB: Option: let cdc-acm handle Sony Ericsson F3507g / Dell 5530 16 years ago
storage c497e715f9 USB: unusual_devs: Add support for GI 0431 SD-Card interface 16 years ago
wusbcore 49fa09215c USB: wusbcore/wa-xfer, fix lock imbalance 16 years ago
Kconfig b8da8677d4 USB: move isp1301_omap to drivers/usb/otg 16 years ago
Makefile 26e1287594 USB: Correct Makefile to make isp1760 buildable 16 years ago
README 9e3e31046f USB: fix directory references in usb/README 17 years ago
usb-skeleton.c cdc9779228 USB: remove unnecessary type casting of urb->context 17 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.