龙芯便携式计算机静态节能方案的研究与实现

摘要

龙芯便携式计算机内嵌一个EC（ Embedded Controller ）模块，该模块对电源管理进行控制。结合龙芯处理器的节能模式，通过智能控制EC模块可实现对龙芯便携式计算机的静态节能支持。在分析各种节能模式的基础上，利用Linux内核已有的接口，实现了Standby、STD和LID等节能方案，实验数据表明这些节能模式能很好地满足不同的应用需求。%Loongson laptop has a built-in EC module , it controls the power management .In combination with the power-saving modes of Loongson microprocessor , the support of static power-saving on Loongson laptop can be implemented by the intelligent control of EC module . Based on analysing various kinds of power-saving modes , the power-saving plans including Standby , STD, LID and others are implemented by making use of existing interfaces in Linux kernel .Experimental data demonstrate that these power-saving modes meet the current demands of various applications well .