基于输入子系统的Linux触摸屏驱动的实现

Realization of Touch Screen's Driver with Linux Input Subsystem

文中对输入子系统模型进行了介绍并重点对该驱动模型的实现原理及机制进行了分析。在此基础上,使用输入子系统驱动模型框架,以ARM处理器S3C2440嵌入式芯片为硬件平台,配合其芯片内部集成的触摸屏控制器,设计了Linux下的电阻式触摸屏驱动程序,实现了在S3C2440平台上,电阻式触摸屏的触点位置坐标采集和触点跟踪。

In this article,the principles of Linux input subsystem driver module are introduced and analyzed.The touch screen driver is designed for Linux input subsystem with the ARM embedded processor of SC32440 as hardware platform. And the contact coordinates of the touch screen and contact tracking are realized on the SC32440 hardware platform.