linux/drivers/usb
Rafael J. Wysocki 927bc9165d PM: Allow USB devices to suspend/resume asynchronously
Set power.async_suspend for USB devices, endpoints and interfaces,
allowing them to be suspended and resumed asynchronously during
system sleep transitions.

The power.async_suspend flag is also set for devices that don't have
suspend or resume callbacks, because otherwise they would make the
main suspend/resume thread wait for their "asynchronous" children
(during suspend) or parents (during resume), effectively negating the
possible gains from executing these devices' suspend and resume
callbacks asynchronously.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-02-26 20:39:12 +01:00
..
atm firmware_class: make request_firmware_nowait more useful 2009-12-11 11:24:52 -08:00
c67x00 usb/c67x00 endianness annotations 2008-06-04 08:06:01 -07:00
class USB: usbtmc: Use usb_clear_halt() instead of custom code. 2009-12-11 11:55:27 -08:00
core PM: Allow USB devices to suspend/resume asynchronously 2010-02-26 20:39:12 +01:00
early USB: fix section mismatch in early ehci dbgp 2009-12-23 11:34:11 -08:00
gadget USB: gadget: fix EEM gadget CRC usage 2010-02-16 15:11:10 -08:00
host USB: FHCI: Fix build after kfifo rework 2010-02-16 15:11:07 -08:00
image USB: remove unneeded printks from microtek driver 2009-09-23 06:46:34 -07:00
misc USB: SIS USB2VGA DRIVER: support KAIREN's USB VGA adaptor USB20SVGA-MB-PLUS 2010-02-16 15:11:05 -08:00
mon USB: add scatter-gather support to usbmon 2009-12-11 11:55:20 -08:00
musb USB: musb: workaround Blackfin FIFO anomalies 2009-12-23 11:34:19 -08:00
otg USB: otg Kconfig: let USB_OTG_UTILS select USB_ULPI option 2010-02-16 15:11:09 -08:00
serial USB: serial: add usbid for dell wwan card to sierra.c 2010-02-16 15:11:06 -08:00
storage Lower USB storage settling delay to something more reasonable 2010-02-26 10:03:22 -08:00
wusbcore USB: wusb: correctly check size of security descriptor. 2009-12-11 11:55:26 -08:00
Kconfig USB: ehci: Allow EHCI to be built on OMAP3 2009-12-11 11:55:20 -08:00
Makefile USB: Fix double-linking of drivers/usb/otg when ULPI is selected 2009-12-23 11:34:10 -08:00
README
usb-skeleton.c USB: skeleton: Correct use of ! and & 2009-12-11 11:55:14 -08:00

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.