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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (39 commits) USB: at91-ohci, handle extra at91sam9261 ahb clock USB: another id for cp2101 driver USB: ueagle-atm.c needs sched.h USB: at91_udc, shrink runtime footprint usbnet: add missing Kconfig for KC2190 cables usbnet: init fault (oops) cleanup, whitespace fixes usbnet: recognize SiteCom CN-124 usb: Remove Airprime device from option.c USB: change __init to __devinit for isp116x_probe USB: ps3: don't call ps3_system_bus_driver_register on other platforms USB: hid-core.c: Removes GTCO CalComp Interwrite IPanel PIDs from blacklist USB: kernel-doc fixes USB: quirky device for cdc-acm USB: cdc-acm: fix incorrect throtteling, make set_control optional USB: unconfigure devices which have config 0 USB: make usb_iso_packet_descriptor.status signed USB: fix g_serial small error USB: use __u32 rather than u32 in userspace ioctls in usbdevice_fs.h USB Storage: US_FL_IGNORE_RESIDUE needed for Aiptek MP3 Player USB: Fix misspelled "USBNET_MII" kernel config option. ...
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.