Programming Guide for Linux USB device drivers

发 布 时 间 : 2008-11-19 来 源 : 来自网络 作 者 : 匿名 浏 览 :

 

This document can be found on http:/usb.cs.tum.edu/usbdoc and can be downloaded from
http:/usb.cs.tum.edu/download/usbdoc

The development of the Linux USB subsystem started in 1997 and in the meantime it was redesigned many times. This implied various changes of its internal structure and its API too. So it is even hard for experienced device driver developers to keep up to date with all ongoing discussions and current changes.
This document should give detailed information about the current state of the USB subsystem and its API for USB device drivers. The first section will deal with the basics of USB devices. You will learn about different types of devices and their properties. Going into detail you will see how USB devices communicate on the bus. The second section gives an overview of the Linux USB subsystem [2] and the device driver framework. Then the API and its data structures will be explained step by step. The last section of this document contains a reference of all API calls and their return codes.


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