mirror of
https://github.com/hardkernel/linux.git
synced 2026-04-12 07:58:10 +09:00
534c1ca9c2
LSK 16.07 v4.4-android * tag 'lsk-v4.4-16.07-android': (160 commits) arm64: kaslr: increase randomization granularity arm64: relocatable: deal with physically misaligned kernel images arm64: don't map TEXT_OFFSET bytes below the kernel if we can avoid it arm64: kernel: replace early 64-bit literal loads with move-immediates arm64: introduce mov_q macro to move a constant into a 64-bit register arm64: kernel: perform relocation processing from ID map arm64: kernel: use literal for relocated address of __secondary_switched arm64: kernel: don't export local symbols from head.S arm64: simplify kernel segment mapping granularity arm64: cover the .head.text section in the .text segment mapping arm64: move early boot code to the .init segment arm64: use 'segment' rather than 'chunk' to describe mapped kernel regions arm64: mm: Mark .rodata as RO Linux 4.4.16 ovl: verify upper dentry before unlink and rename drm/i915: Revert DisplayPort fast link training feature tmpfs: fix regression hang in fallocate undo tmpfs: don't undo fallocate past its last page crypto: qat - make qat_asym_algs.o depend on asn1 headers xen/acpi: allow xen-acpi-processor driver to load on Xen 4.7 ...
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.