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Diffstat (limited to 'kernel/drivers/usb/README')
| -rw-r--r-- | kernel/drivers/usb/README | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/drivers/usb/README b/kernel/drivers/usb/README new file mode 100644 index 000000000..2144e7dbf --- /dev/null +++ b/kernel/drivers/usb/README @@ -0,0 +1,54 @@ +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. |