device transfer

Linux character device-simple character device model Linux character Devices I. Use the character Device Driver 1. Compile/install the driverIn Linux, drivers generally use the program structure of the kernel module for encoding. Therefore, the essence of compiling/installing a driver is to compile/install a kernel module. 2. Character

PCI device creation process This part is divided into two parts for learning. One is to refer to the previous articles, analyze the source code of ld1_and sculld, and the other is to refer to ldd3 to learn PCI. Part 1Ldd_bus declares the ldd_bus_type of a bus_type structure: Struct bus_type ldd_bus_type = { . Name = "LDD ", . Match = ldd_match, . Uevent = ldd_uevent, }; The code for adding ldd_bus_type to and detaching from the kernel is as follows:

As there are too many notes in Chapter 10, I will post the previous notes first. 1. functions used to open various devices Device Function used to open a device File Createfile (pszname is the path name or UNC path name) Directory Createfile (pszname is the path name or UNC path name ). if you specify the file_flag_backup_semantics flag when calling createfile, Windows al

1. The setup steps are very easy in "application ".2. Click "set", as shown in the following figure.3. Find the "device" in the "Enable settings" and enter the details.4. Click "call" to enter.5. Click other settings ].6. Then you can set [call transfer] here ].7. Select [voice call ].8. Select the transfer method

A new device driver model-platform (platform) device driver, platform device driver (platform_device) and platform driver (Platform_driver) is introduced into the Linux2.6 kernel, The introduction of platform devices makes Linux device drivers more portable.First, platform equipmentPlatform

A Linux device model can be better understood through various stages of a device's life cycle in the kernel. I will analyze the source code of ldquo and sculld to understand the integration of each link in the Linux device model. The integration of the (PCI Bus) in ldd3 serves as a reference, because embedded Linux uses less PCI bus. First, you must familiarize yourself with the source code of ldquo and scu

Loaded from http://blog.csdn.net/sjwangjinbao/article/details/6077225When writing a bus device driver, it was found that the struct device in the 2.6.33.2 kernel had no members of BUS_ID, and the const char *init_name member was found. However, this member cannot be used directly to set and read the device name.The method for kernel operation is dev_name and Dev_

2.1Network Driver StructureThe architecture 1 of the Linux Network Driver is shown in.It can be divided into four layers:(1) Protocol Interface Layer (2) network device interface layer (3) Device Driver Function Layer (4) network device and media layer. Network Driver Focus: completes the device driver Function Layer I

How to use the device tree of linux drivers and how to use the device tree of linux drivers The Device Tree describes the hardware from the software perspective, and DTS is the Device Tree source file. DTC is responsible for converting DTS to DTB, and DTB is the binary form of DTS for machine use. The

1, after the system plugged into the USB device, from the console interface has the following prompt:From the console information, you can see the inserted USB device name.As you can see, the plugged-in USB device is sde4.However, if the CRT tool is remotely connected to the past, you can use the following command to view the USB