1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 24f86d3a8SLen Brown /* 34f86d3a8SLen Brown * cpuidle.h - The internal header file 44f86d3a8SLen Brown */ 54f86d3a8SLen Brown 64f86d3a8SLen Brown #ifndef __DRIVER_CPUIDLE_H 74f86d3a8SLen Brown #define __DRIVER_CPUIDLE_H 84f86d3a8SLen Brown 94f86d3a8SLen Brown /* For internal use only */ 1061cb5758SRafael J. Wysocki extern char param_governor[]; 114f86d3a8SLen Brown extern struct cpuidle_governor *cpuidle_curr_governor; 12*cb5d8c45SJoao Martins extern struct cpuidle_governor *cpuidle_prev_governor; 134f86d3a8SLen Brown extern struct list_head cpuidle_governors; 144f86d3a8SLen Brown extern struct list_head cpuidle_detected_devices; 154f86d3a8SLen Brown extern struct mutex cpuidle_lock; 164f86d3a8SLen Brown extern spinlock_t cpuidle_driver_lock; 1762027aeaSLen Brown extern int cpuidle_disabled(void); 1856cfbf74SColin Cross extern int cpuidle_enter_state(struct cpuidle_device *dev, 1956cfbf74SColin Cross struct cpuidle_driver *drv, int next_state); 204f86d3a8SLen Brown 214f86d3a8SLen Brown /* idle loop */ 224f86d3a8SLen Brown extern void cpuidle_install_idle_handler(void); 234f86d3a8SLen Brown extern void cpuidle_uninstall_idle_handler(void); 244f86d3a8SLen Brown 254f86d3a8SLen Brown /* governors */ 26*cb5d8c45SJoao Martins extern struct cpuidle_governor *cpuidle_find_governor(const char *str); 274f86d3a8SLen Brown extern int cpuidle_switch_governor(struct cpuidle_governor *gov); 284f86d3a8SLen Brown 294f86d3a8SLen Brown /* sysfs */ 308f3e9953SDaniel Lezcano 318f3e9953SDaniel Lezcano struct device; 328f3e9953SDaniel Lezcano 338a25a2fdSKay Sievers extern int cpuidle_add_interface(struct device *dev); 348a25a2fdSKay Sievers extern void cpuidle_remove_interface(struct device *dev); 35bf4d1b5dSDaniel Lezcano extern int cpuidle_add_device_sysfs(struct cpuidle_device *device); 36bf4d1b5dSDaniel Lezcano extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device); 371aef40e2SDaniel Lezcano extern int cpuidle_add_sysfs(struct cpuidle_device *dev); 381aef40e2SDaniel Lezcano extern void cpuidle_remove_sysfs(struct cpuidle_device *dev); 394f86d3a8SLen Brown 404126c019SColin Cross #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED 414c1ed5a6SXunlei Pang bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state); 42abceaa9cSXunlei Pang int cpuidle_coupled_state_verify(struct cpuidle_driver *drv); 434126c019SColin Cross int cpuidle_enter_state_coupled(struct cpuidle_device *dev, 444126c019SColin Cross struct cpuidle_driver *drv, int next_state); 454126c019SColin Cross int cpuidle_coupled_register_device(struct cpuidle_device *dev); 464126c019SColin Cross void cpuidle_coupled_unregister_device(struct cpuidle_device *dev); 474126c019SColin Cross #else 484c1ed5a6SXunlei Pang static inline 494c1ed5a6SXunlei Pang bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state) 504126c019SColin Cross { 514126c019SColin Cross return false; 524126c019SColin Cross } 534126c019SColin Cross 54abceaa9cSXunlei Pang static inline int cpuidle_coupled_state_verify(struct cpuidle_driver *drv) 55abceaa9cSXunlei Pang { 56abceaa9cSXunlei Pang return 0; 57abceaa9cSXunlei Pang } 58abceaa9cSXunlei Pang 594126c019SColin Cross static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev, 604126c019SColin Cross struct cpuidle_driver *drv, int next_state) 614126c019SColin Cross { 624126c019SColin Cross return -1; 634126c019SColin Cross } 644126c019SColin Cross 654126c019SColin Cross static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev) 664126c019SColin Cross { 674126c019SColin Cross return 0; 684126c019SColin Cross } 694126c019SColin Cross 704126c019SColin Cross static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev) 714126c019SColin Cross { 724126c019SColin Cross } 734126c019SColin Cross #endif 744126c019SColin Cross 754f86d3a8SLen Brown #endif /* __DRIVER_CPUIDLE_H */ 76