76 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * cpuidle.h - The internal header file4 */5 6#ifndef __DRIVER_CPUIDLE_H7#define __DRIVER_CPUIDLE_H8 9/* For internal use only */10extern char param_governor[];11extern struct cpuidle_governor *cpuidle_curr_governor;12extern struct cpuidle_governor *cpuidle_prev_governor;13extern struct list_head cpuidle_governors;14extern struct list_head cpuidle_detected_devices;15extern struct mutex cpuidle_lock;16extern spinlock_t cpuidle_driver_lock;17extern int cpuidle_disabled(void);18extern int cpuidle_enter_state(struct cpuidle_device *dev,19 struct cpuidle_driver *drv, int next_state);20 21/* idle loop */22extern void cpuidle_install_idle_handler(void);23extern void cpuidle_uninstall_idle_handler(void);24 25/* governors */26extern struct cpuidle_governor *cpuidle_find_governor(const char *str);27extern int cpuidle_switch_governor(struct cpuidle_governor *gov);28 29/* sysfs */30 31struct device;32 33extern int cpuidle_add_interface(void);34extern void cpuidle_remove_interface(struct device *dev);35extern int cpuidle_add_device_sysfs(struct cpuidle_device *device);36extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device);37extern int cpuidle_add_sysfs(struct cpuidle_device *dev);38extern void cpuidle_remove_sysfs(struct cpuidle_device *dev);39 40#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED41bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state);42int cpuidle_coupled_state_verify(struct cpuidle_driver *drv);43int cpuidle_enter_state_coupled(struct cpuidle_device *dev,44 struct cpuidle_driver *drv, int next_state);45int cpuidle_coupled_register_device(struct cpuidle_device *dev);46void cpuidle_coupled_unregister_device(struct cpuidle_device *dev);47#else48static inline49bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state)50{51 return false;52}53 54static inline int cpuidle_coupled_state_verify(struct cpuidle_driver *drv)55{56 return 0;57}58 59static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev,60 struct cpuidle_driver *drv, int next_state)61{62 return -1;63}64 65static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev)66{67 return 0;68}69 70static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev)71{72}73#endif74 75#endif /* __DRIVER_CPUIDLE_H */76