Jiri Slaby 2912282c06 USB: make usb_buffer_map_sg consistent with doc 16 years ago
..
atm ade901d7a4 firmware: atm/ueagle-atm: prepare for FIRMWARE_NAME_MAX removal 16 years ago
c67x00 76e6f2526f usb/c67x00 endianness annotations 17 years ago
class 4143d178e7 USB: usbtmc: correct termination condition for reads. 16 years ago
core 2912282c06 USB: make usb_buffer_map_sg consistent with doc 16 years ago
gadget 04c4ab17c7 USB: fsl_qe_udc: Add fsl,mpc8323-qe-usb compatible entry 16 years ago
host a448c9d8c5 USB: EHCI: change deschedule logic for interrupt QHs 16 years ago
image 877accca79 USB: remove unneeded printks from microtek driver 16 years ago
misc 4d155eb5f5 USB: full autosuspend and power management support for usbsevseg 16 years ago
mon 4e9e920035 USB: usbmon: end ugly tricks with DMA peeking 16 years ago
musb c740d0d80d USB: musb: fix put_device() call sequence 16 years ago
otg 63ead6a00d USB: otg: fix twl4030-usb build 16 years ago
serial 29cf1b72f3 USB-serial: pl2303: use 1.5 instead of 2 stop bits with 5 data bits 16 years ago
storage d0defb855c USB: usb-storage fails to attach to Huawei Datacard cdrom device 16 years ago
wusbcore 3dbda77e6f trivial: fix typos "man[ae]g?ment" -> "management" 16 years ago
Kconfig 501c9c0802 USB: at91: Add USB EHCI driver for at91sam9g45 series 16 years ago
Makefile a9d43091c5 USB: NXP ISP1362 USB host driver 16 years ago
README 9e3e31046f USB: fix directory references in usb/README 17 years ago
usb-skeleton.c a5f5ea230d USB: skeleton: Use dev_info instead of info 16 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.