METHOD AND SYSTEM FOR RAPID ENTRY INTO AND FOR RAPID EXITING FROM SLEEP STATES FOR PROCESSORS OF A PORTABLE COMPUTING DEVICE

摘要

A method and system for managing sleep states of a portable computing device are described. They include maintaining a sleep set of resource states and an active set of resource states in memory. A request may be issued for a processor to enter into a sleep state. This causes a controller to review a trigger set to determine if a shut down condition for the processor matches one or more conditions listed in the trigger set. Each trigger set may comprise a "trigger event" that may allow a controller to select a specific resource set which is desired by a particular processor based on a trigger event detected by a system power manager. If a trigger set matches a shut down condition then switching states of one or more resources in accordance with the sleep set may be made by the controller without using a software handshake.