_exit my_exit(void) { cdev_del(&my_cdev); unregister_chrdev(major_number, "my_device"); printk(KERN_INFO "Device unregistered\n"); } module_init(my_init); module_exit(my_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Your Name"); MODULE_DESCRIPTION("A simple character device driver...
Linux Device Driver Development
dev_id为申请时告诉系统的设备标识,regs为产生中断时的寄存器内容;device为设备名,将会挂载在/proc/interrupts文件中;flag是申请中断时的选项,它控制着中断处理程序的一些特性,比如最常用的选项设置flag为SA_INTERRUPT,则表示快速处理程序,此时所有中断都被屏蔽;而不设置SA_INTERRUPT时,则表示慢速处理程序,除了正在处理...
應徵Apple 的 Software Engineer - Linux Driver Developer - Thunderbolt/USB/PCIe/Displays 職務。請詳閱關於此職務的資訊,了解是否適合你。
tools, and active community make it an ideal choice for developers looking to create high-quality drivers for their hardware devices. Whether you are a beginner or an experienced developer, Red Hat provides the tools and resources you need to succeed in the world of Linux device driver ...
Both of these skills are very useful for helping the developer to understand what is happening inside the kernel. Chapter 3, Working with Char Drivers, examines how to implement a really simple char driver, and how to exchange data between it and the userspace. The chapter ends by proposing...
Even when Android is a Linux-based operating system,Google by a design decision forked the Linux kernel and added some APIs [6] that don't exist on the Linux kernel. These APIs are used by device drivers and for that reason,a developer has to choose whethertowrite a device driver for ...
Overall, Linux Device Drivers 4 is a must-have resource for anyone interested in Linux device driver development. Whether you are a beginner looking to learn the basics of device driver programming or an experienced developer seeking to enhance your skills, this book offers valuable insights and ...
即便如此,了解了kernel的设备模型,对于driver developer来说有很大的好处,而且,在某些情况下,driver需要直接和某些设备模型交互,使用他们提供的部分功能。 14.1. Kobjects, Ksets, and Subsystems 在kernel中,kobj是一个非常基础的东西,它可以把很多的device module组合在一起。kobj最开始只是一个reference counter,后来...
pci提供 pci_register_driver() 3)registe_device(xx) 各总线除了管理driver外,还管理device,通常会提供一支API来添加设备,如: input_register_device, serio_add_port.实现上都是通过一个链表对设备进行管理,通常是在初始化或者probe的时候, 添加设备。