1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
55 lines
2.4 KiB
Plaintext
55 lines
2.4 KiB
Plaintext
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.
|