linux/drivers/usb
Linus Torvalds a9a08845e9 vfs: do bulk POLL* -> EPOLL* replacement
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-11 14:34:03 -08:00
..
atm USB: atm: fix up some remaining DEVICE_ATTR() usage 2018-01-24 08:49:52 +01:00
c67x00 USB: add SPDX identifiers to all remaining Makefiles 2017-11-07 15:53:48 +01:00
chipidea USB: move many drivers to use DEVICE_ATTR_WO 2018-01-24 08:49:52 +01:00
class vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
common USB: ulpi: fix bus-node lookup 2017-11-28 15:17:48 +01:00
core vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
dwc2 usb: changes for v4.16 merge window 2018-01-08 14:03:30 +01:00
dwc3 phy: for 4.16 2018-01-08 14:17:59 +01:00
early usb: early: Correct the endpoint type value for bulk in endpoint 2017-12-07 16:03:15 +01:00
gadget vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
host pinctrl: files should directly include apis they use 2018-02-05 09:41:54 -08:00
image USB/PHY patches for 4.15-rc1 2017-11-13 21:14:07 -08:00
isp1760 USB/PHY patches for 4.15-rc1 2017-11-13 21:14:07 -08:00
misc vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
mon vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
mtu3 usb: mtu3: fix semicolon.cocci warnings 2018-01-16 10:01:01 +01:00
musb USB: musb: fix up one odd DEVICE_ATTR() usage 2018-01-24 08:49:52 +01:00
phy USB: move many drivers to use DEVICE_ATTR_WO 2018-01-24 08:49:52 +01:00
renesas_usbhs usb: renesas_usbhs: Add support for RZ/A1 2018-01-09 16:18:50 +01:00
serial Driver Core updates for 4.16-rc1 2018-02-01 10:00:28 -08:00
storage USB: move many drivers to use DEVICE_ATTR_RO 2018-01-24 08:49:52 +01:00
typec Merge 4.15-rc4 into usb-next 2017-12-18 09:08:05 +01:00
usbip USB: move many drivers to use DEVICE_ATTR_WO 2018-01-24 08:49:52 +01:00
wusbcore USB/PHY patches for 4.15-rc1 2017-11-13 21:14:07 -08:00
Kconfig
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
README
usb-skeleton.c USB: usb-skeleton: Remove redundant license text 2017-11-04 11:55:39 +01:00

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 ("hub_wq").

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.