linux/drivers/usb
Alan Stern 088f7fec8a USB: implement usb_enable_autosuspend
This patch (as1326) adds usb_enable_autosuspend() and
usb_disable_autosuspend() routines for use by drivers.  If a driver
knows that its device can handle suspends and resumes correctly, it
can enable autosuspend all by itself.  This is equivalent to the user
writing "auto" to the device's power/level attribute.

The implementation differs slightly from what it used to be.  Now
autosuspend is disabled simply by doing usb_autoresume_device() (to
increment the usage counter) and enabled by doing
usb_autosuspend_device() (to decrement the usage counter).

The set_level() attribute method is updated to use the new routines,
and the USB Power-Management documentation is updated.

The patch adds a usb_enable_autosuspend() call to the hub driver's
probe routine, allowing the special-case code for hubs in quirks.c to
be removed.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:54:10 -08:00
..
atm USB: cxacru: increment driver version 2010-03-02 14:53:02 -08:00
c67x00 USB: c67x00: use resource_size(). 2010-03-02 14:54:01 -08:00
class USB: usblp: Remove checks no longer needed with the new runtime PM system 2010-03-02 14:53:39 -08:00
core USB: implement usb_enable_autosuspend 2010-03-02 14:54:10 -08:00
early USB: fix section mismatch in early ehci dbgp 2009-12-23 11:34:11 -08:00
gadget USB: gadget: introduce g_nokia gadget driver 2010-03-02 14:54:02 -08:00
host USB: xhci: Fix compile issues with xhci_get_slot_state() 2010-03-02 14:54:01 -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 usbmon: add bus number to text API 2010-03-02 14:53:30 -08:00
musb usb: musb: Add 'extvbus' in musb_hdrc_platform_data 2010-03-02 14:53:48 -08:00
otg usb: otg: twl4030: move to request_threaded_irq 2010-03-02 14:53:40 -08:00
serial USB: cypress_m8: use put_unaligned_le32() where necessary 2010-03-02 14:54:00 -08:00
storage USB: unusual_devs: Add support for multiple Option 3G sticks 2010-03-02 14:54:03 -08:00
wusbcore USB: rename USB_SPEED_VARIABLE to USB_SPEED_WIRELESS 2010-03-02 14:53:36 -08:00
Kconfig USB: host: SL811: allow the hcd on Blackfin systems 2010-03-02 14:53:27 -08:00
Makefile USB: MXC: Add i.MX21 specific USB host controller driver. 2010-03-02 14:52:55 -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.