224563b6ce
Hi Greg, This pull request includes one new feature for the xhci-plat driver (device tree support). Felipe was fine with the patch last I checked, but hadn't provided an official Acked-by line. This pull request also includes 13 patches from my FOSS Outreach Program for Women (OPW) intern, Xenia. She fixed a bug in the xHCI driver so that the driver can allocate 64-bit consistent DMA, converted the driver to use dynamic debugging, and added a bunch of new trace events for the xHCI driver. The python plugin for trace-cmd should be up on git hub shortly, although the trace events are usable without it. I'm very happy with the progress that Xenia has made, and I look forward to her future contributions to the Linux kernel. Sarah Sharp -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJSDPhXAAoJEBMGWMLi1Gc5gyIP/iH1gkiwWT4LapgmwKyG3kH5 YS+NKBC/E1a2kXlvP6yb5SzZd9eYcQ0oatGB1Tg/ek+HctDEmDr2XBBhRuR2XszW 6mkGbP4NjnRrW8s+5IgF3bbk5GGHY50ogegHIYiTHCo+lHvX+zCFSv/fNtHli3FU HhyR/cxOJUouFmPQHgnjc3yFGthYO9sfq0YTDKQ00dYna2q44zm+TTwJSvg8XjW5 oTFyJeER0yQQ4b9gKUz4JJDmYUmr2ZiAmXIZD9C8fouD5PGdFjBquH9lCY5rRjPi UZB/HKtSTntT3K1yWCdiT/wqAGcY/MF9FVg44LtQom7c7ozwPUnQV1Y/7kPU2KrM etKBqR5z1x4Sob8c1YnSiARGUAzwKxxXjlcZA3WWJJahI/tR70PSslesoxi+phQs mPTYOX+f5UIF3ieiREJWf6tvL5hWVYVv4y9WqzF6gUydVjpxHgRZ0oikiRFUPBtz DEjhlsNjDE56M88aVVJCUiPDQFZpJZccykqZr6uNt/T9KQyS0NvH5eKY/U3AUJXC N/8EB/eFTbMIgDWBQRusV2+08oMVZrFXXGvDin/qmWP8eRsaJHCILymWrwq1dkTW Cd7F8CgT1uDbu5Kyxq/p4lVWwgpUTkN99aW2cqgfY7IhuWtatn1SdL7SD+0OBHne jFDdl5LQuKE4otg4+KKv =n45I -----END PGP SIGNATURE----- Merge tag 'for-usb-next-2013-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-next Sarah writes: xhci: Platform updates, 64-bit DMA, and trace events for 3.12. Hi Greg, This pull request includes one new feature for the xhci-plat driver (device tree support). Felipe was fine with the patch last I checked, but hadn't provided an official Acked-by line. This pull request also includes 13 patches from my FOSS Outreach Program for Women (OPW) intern, Xenia. She fixed a bug in the xHCI driver so that the driver can allocate 64-bit consistent DMA, converted the driver to use dynamic debugging, and added a bunch of new trace events for the xHCI driver. The python plugin for trace-cmd should be up on git hub shortly, although the trace events are usable without it. I'm very happy with the progress that Xenia has made, and I look forward to her future contributions to the Linux kernel. Sarah Sharp
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.