1 2 3 Supporting multiple CPU idle levels in kernel 4 5 cpuidle drivers 6 7 8 9 10cpuidle driver hooks into the cpuidle infrastructure and handles the 11architecture/platform dependent part of CPU idle states. Driver 12provides the platform idle state detection capability and also 13has mechanisms in place to support actual entry-exit into CPU idle states. 14 15cpuidle driver initializes the cpuidle_device structure for each CPU device 16and registers with cpuidle using cpuidle_register_device. 17 18It can also support the dynamic changes (like battery <-> AC), by using 19cpuidle_pause_and_lock, cpuidle_disable_device and cpuidle_enable_device, 20cpuidle_resume_and_unlock. 21 22Interfaces: 23extern int cpuidle_register_driver(struct cpuidle_driver *drv); 24extern void cpuidle_unregister_driver(struct cpuidle_driver *drv); 25extern int cpuidle_register_device(struct cpuidle_device *dev); 26extern void cpuidle_unregister_device(struct cpuidle_device *dev); 27 28extern void cpuidle_pause_and_lock(void); 29extern void cpuidle_resume_and_unlock(void); 30extern int cpuidle_enable_device(struct cpuidle_device *dev); 31extern void cpuidle_disable_device(struct cpuidle_device *dev); 32