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 */ 104f86d3a8SLen Brown extern struct cpuidle_governor *cpuidle_curr_governor; 114f86d3a8SLen Brown extern struct list_head cpuidle_governors; 124f86d3a8SLen Brown extern struct list_head cpuidle_detected_devices; 134f86d3a8SLen Brown extern struct mutex cpuidle_lock; 144f86d3a8SLen Brown extern spinlock_t cpuidle_driver_lock; 1562027aeaSLen Brown extern int cpuidle_disabled(void); 1656cfbf74SColin Cross extern int cpuidle_enter_state(struct cpuidle_device *dev, 1756cfbf74SColin Cross struct cpuidle_driver *drv, int next_state); 184f86d3a8SLen Brown 194f86d3a8SLen Brown /* idle loop */ 204f86d3a8SLen Brown extern void cpuidle_install_idle_handler(void); 214f86d3a8SLen Brown extern void cpuidle_uninstall_idle_handler(void); 224f86d3a8SLen Brown 234f86d3a8SLen Brown /* governors */ 244f86d3a8SLen Brown extern int cpuidle_switch_governor(struct cpuidle_governor *gov); 254f86d3a8SLen Brown 264f86d3a8SLen Brown /* sysfs */ 278f3e9953SDaniel Lezcano 288f3e9953SDaniel Lezcano struct device; 298f3e9953SDaniel Lezcano 308a25a2fdSKay Sievers extern int cpuidle_add_interface(struct device *dev); 318a25a2fdSKay Sievers extern void cpuidle_remove_interface(struct device *dev); 32bf4d1b5dSDaniel Lezcano extern int cpuidle_add_device_sysfs(struct cpuidle_device *device); 33bf4d1b5dSDaniel Lezcano extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device); 341aef40e2SDaniel Lezcano extern int cpuidle_add_sysfs(struct cpuidle_device *dev); 351aef40e2SDaniel Lezcano extern void cpuidle_remove_sysfs(struct cpuidle_device *dev); 364f86d3a8SLen Brown 374126c019SColin Cross #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED 384c1ed5a6SXunlei Pang bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state); 39abceaa9cSXunlei Pang int cpuidle_coupled_state_verify(struct cpuidle_driver *drv); 404126c019SColin Cross int cpuidle_enter_state_coupled(struct cpuidle_device *dev, 414126c019SColin Cross struct cpuidle_driver *drv, int next_state); 424126c019SColin Cross int cpuidle_coupled_register_device(struct cpuidle_device *dev); 434126c019SColin Cross void cpuidle_coupled_unregister_device(struct cpuidle_device *dev); 444126c019SColin Cross #else 454c1ed5a6SXunlei Pang static inline 464c1ed5a6SXunlei Pang bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state) 474126c019SColin Cross { 484126c019SColin Cross return false; 494126c019SColin Cross } 504126c019SColin Cross 51abceaa9cSXunlei Pang static inline int cpuidle_coupled_state_verify(struct cpuidle_driver *drv) 52abceaa9cSXunlei Pang { 53abceaa9cSXunlei Pang return 0; 54abceaa9cSXunlei Pang } 55abceaa9cSXunlei Pang 564126c019SColin Cross static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev, 574126c019SColin Cross struct cpuidle_driver *drv, int next_state) 584126c019SColin Cross { 594126c019SColin Cross return -1; 604126c019SColin Cross } 614126c019SColin Cross 624126c019SColin Cross static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev) 634126c019SColin Cross { 644126c019SColin Cross return 0; 654126c019SColin Cross } 664126c019SColin Cross 674126c019SColin Cross static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev) 684126c019SColin Cross { 694126c019SColin Cross } 704126c019SColin Cross #endif 714126c019SColin Cross 724f86d3a8SLen Brown #endif /* __DRIVER_CPUIDLE_H */ 73