linux kernel driver tutorial

.2. Method 2--Add Hardware abstraction LayerSplit the driver into split, part open source in kernel, part not open source in Android frame:Second, for example led Android drive:From here we will see the direction of the entire application framework layer to the underlying drive. First, either way, we need to implement a Linux

How to add the graphics card module (private driver) of the old kernel for the new kernel-Linux general technology-Linux programming and kernel information. The following is a detailed description. Ask about the make localmodconfi

How is Linux composed?A: Linux is made up of user space and kernel spaceWhy divide user space and kernel space?A: For CPU architectures, each processor can have multiple modes, and Linux is a partition that takes into account the system'sSecurity, such as X86 can have 4 mode

process, does not have the race state question. This was a concern during the kernel migration, but found that kernel has provided a common function in the case of a large and small-end processor operation Register, which is Readl/writel (for example, to operate a 32-bit register). For driver developers do not need to care about the processor's byte sequence, r

Linux Kernel Analysis (2) ---- kernel module introduction | simple kernel module implementation, linux ---- Linux Kernel Analysis (2) Yesterday we started

, ADDR, NR );/Bufp + = nR ;}Flexible Use of macro definition (2)# Define offsetof (strct, ELEM )/(Long) (struct strct *) 0)-> ELEM ))• 1. (struct strct *) 0) strct pointer• 2. (struct strct *) 0)-> ELEM) Member address,That is, the offset relative to 0.• 3. Result: offsetof (strct, ELEM) returns the structureOffset of the ELEM member in the body strctUse of goto in C Language• In application C programming, to ensure the program's moduleBlock, Goto is not recommended•

can be directly compiled into the kernel or used separately as a module. Printk is used for output, so you may wonder why you don't need printf, because in Linux, it is divided into user space and kernel space, while printf can only run in user space. In addition, the device files used for interaction between them. To understand the source file, GPL protocol,

Original address: Linux kernel source Code Analysis--Kernel boot (6) Image kernel boot (do_basic_setup function) (Linux-3.0 ARMv7) TekkamanninjaTransferred from: http://blog.chinaunix.net/uid-25909619-id-4938396.htmlAfter the basic analysis of the

[Video] Secrets of Embedded Linux/Android driver development (1) Touch Screen driver development and android driver development Secrets of Embedded Linux/Android driver development (1) Touch Screen

details, it is very recommended to buy this bookThank Juno for this book, Bring me a lot of unknown knowledge, the great God's blog address: Http://blog.csdn.net/luoshengyangFirst, write kernel-driven appletThe kernel-driven applet content is not covered here, because there is nothing to say about the Linux system API, and then look at the concept of the drive.

bookThank Juno for this book, Bring me a lot of unknown knowledge, the great God's blog address: Http://blog.csdn.net/luoshengyangFirst, write kernel-driven appletThe kernel-driven applet content is not covered here, because there is nothing to say about the Linux system API, and then look at the concept of the drive. Here the main introduction of the operating

downloaded from the official website of nv, you must manually install the nv driver after each kernel upgrade. This guide aims to automatically install the driver after kernel upgrade without manual intervention. This article assumes that you have correctly installed the nvidia official