logitech usb controller driver

Transferred from: http://blog.csdn.net/zkami/article/details/2496770Usb_hcd_omap_probe (const struct hc_driver *driver) (DEV/OHCI/OHCI-OMAP.C)Called by Platform_driver_register () during module initialization to initialize and Ohci_hcd_omap_driverMatch the USB host controller.-GT;USB_CREATE_HCD (driver); Create a data

USB bus leads to two important linked lists! A usb bus leads to two important linked lists: A linked list of USB devices and a linked list of USB drivers. The device linked list contains USB devices in various systems and all interfaces of these devices. The

Author:Liu Hongtao, a lecturer at Huaqing vision embedded College. A Linux USB driver consists of two parts. Some are USB device controller (UDC) drivers and others are hardware-independent function drivers (such as mouse, USB flash drive,

and USB core, and then does the appropriate processing.Driver Catalog drivers/usb/*Usb/serial USB Serial device driver (e.g. USB 3G card, Bluetooth, etc.)Usb/storage

. Endpoint descriptor: the endpoint address, direction, and type. It supports the maximum package size. If it is an end point of the interrupt type, it also includes the round inquiry frequency rate. In Linux kernel, USB end points are described using the usb_host_endpoint structure. The USB end point description is defined as the usb_endpoint_descriptor structure. String descriptor: other descriptors p

shows the functional relationship between the modules of the USB master driver stack in the VxWorks operating system. The underlying hardware of the stack is the USB host con-troroller. the USB master controller controls the USB

USB device: Mainly completes the processing of the USB protocol and data exchange. PC program: consists of USB communication program and user service program. The user service program communicates with the system USB di through the USB communication program. The debugging o

1. Foreword 2. Source Code Architecture 3. Enumeration process 1. Foreword Gadget, small ornaments. USB Gadget, refers to the development of electronic devices to USB from the device mode through the USB connection to the host. For example, when a mobile phone is plugged into a PC with a USB cable, the handset is a

Introduction The embedded linux system environment is widely used in the embedded field because of its ease of transplantation and cutting, small kernel, high efficiency, integrity, open source code, and excellent performance. Linux USB device source code mainly includes the massive storage devices of USB device, serial devices, network devices, and other device drivers and drivers of various

. As far as I understand it now, the USB drive is divided into two pieces, a USB bus driver, this thing, the Linux kernel has been done, we can ignore, but we must at least understand his function. The image must say, the USB bus drive is equivalent to paving a road, so that all the information can be reached through t

;_ U8 bulk_in_endpointaddr;_ U8 bulk_out_endpointaddr;Struct kref;};Here we need to explain some detailed USB protocol specifications. USB can automatically monitor the device and call the corresponding driver to process the device, so its specification is actually quite complicated. Fortunately, we don't have to worry about most of the details, because Linux has

of the USB driver framework in wince6.0, contains three roles. 3. the USB directory structure in wince6.0 has good support for USB. Let's take a look at what Microsoft has done. From the preceding directory structure, we can see that the USB

Generally, Intel has two EHCI and one xhci on the motherboard that supports USB 3.0 host controllers. This type of motherboard generally has 14 ports, and port 0-3 is shared by EHCI and xhci, that is, port 0-3 has four switches, and the control registers of these four switches are located in the xhci PCI (PCI-E) configuration space, the four switches on the PC are configured in the BIOS. Because many boards are not enabled by default, after you buy a

Invalid URB function. Usbd_status_invalid_parameter 0x80000300 Invalid parameter. Usbd_status_error_busy 0x80000400 The client driver caused an error by attempting to close a endpoint, interface, or configuration handle with outstanding Transfers. Usbd_status_request_failed 0x80000500 The hub driver cannot complete a URB request. U

. Urb_async_unlinkIf it is set to bits, the call to usb_unlink_urb of the urb will be returned almost immediately, and the urb will be unbound later. otherwise, this function waits until urb is completely dechained and ends before returning. use this bit with caution because it may be difficult to debug synchronization issues. Urb_no_fsbrOnly the uhci USB host controller

S3C2440 provides a USB slave interface. We can use it to simulate 2440 as a USB flash drive and access 2440 directly from the computer as a drive letter. I. Kernel configurationUSB support USB Peripheral Controller (S3C2410 USB device c