14f86d3a8SLen Brown /* 24f86d3a8SLen Brown * cpuidle.h - The internal header file 34f86d3a8SLen Brown */ 44f86d3a8SLen Brown 54f86d3a8SLen Brown #ifndef __DRIVER_CPUIDLE_H 64f86d3a8SLen Brown #define __DRIVER_CPUIDLE_H 74f86d3a8SLen Brown 88a25a2fdSKay Sievers #include <linux/device.h> 94f86d3a8SLen Brown 104f86d3a8SLen Brown /* For internal use only */ 114f86d3a8SLen Brown extern struct cpuidle_governor *cpuidle_curr_governor; 124f86d3a8SLen Brown extern struct list_head cpuidle_governors; 134f86d3a8SLen Brown extern struct list_head cpuidle_detected_devices; 144f86d3a8SLen Brown extern struct mutex cpuidle_lock; 154f86d3a8SLen Brown extern spinlock_t cpuidle_driver_lock; 1662027aeaSLen Brown extern int cpuidle_disabled(void); 1756cfbf74SColin Cross extern int cpuidle_enter_state(struct cpuidle_device *dev, 1856cfbf74SColin Cross struct cpuidle_driver *drv, int next_state); 194f86d3a8SLen Brown 204f86d3a8SLen Brown /* idle loop */ 214f86d3a8SLen Brown extern void cpuidle_install_idle_handler(void); 224f86d3a8SLen Brown extern void cpuidle_uninstall_idle_handler(void); 234f86d3a8SLen Brown 244f86d3a8SLen Brown /* governors */ 254f86d3a8SLen Brown extern int cpuidle_switch_governor(struct cpuidle_governor *gov); 264f86d3a8SLen Brown 274f86d3a8SLen Brown /* sysfs */ 288a25a2fdSKay Sievers extern int cpuidle_add_interface(struct device *dev); 298a25a2fdSKay Sievers extern void cpuidle_remove_interface(struct device *dev); 304f86d3a8SLen Brown extern int cpuidle_add_state_sysfs(struct cpuidle_device *device); 314f86d3a8SLen Brown extern void cpuidle_remove_state_sysfs(struct cpuidle_device *device); 32*1aef40e2SDaniel Lezcano extern int cpuidle_add_sysfs(struct cpuidle_device *dev); 33*1aef40e2SDaniel Lezcano extern void cpuidle_remove_sysfs(struct cpuidle_device *dev); 344f86d3a8SLen Brown 354126c019SColin Cross #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED 364126c019SColin Cross bool cpuidle_state_is_coupled(struct cpuidle_device *dev, 374126c019SColin Cross struct cpuidle_driver *drv, int state); 384126c019SColin Cross int cpuidle_enter_state_coupled(struct cpuidle_device *dev, 394126c019SColin Cross struct cpuidle_driver *drv, int next_state); 404126c019SColin Cross int cpuidle_coupled_register_device(struct cpuidle_device *dev); 414126c019SColin Cross void cpuidle_coupled_unregister_device(struct cpuidle_device *dev); 424126c019SColin Cross #else 434126c019SColin Cross static inline bool cpuidle_state_is_coupled(struct cpuidle_device *dev, 444126c019SColin Cross struct cpuidle_driver *drv, int state) 454126c019SColin Cross { 464126c019SColin Cross return false; 474126c019SColin Cross } 484126c019SColin Cross 494126c019SColin Cross static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev, 504126c019SColin Cross struct cpuidle_driver *drv, int next_state) 514126c019SColin Cross { 524126c019SColin Cross return -1; 534126c019SColin Cross } 544126c019SColin Cross 554126c019SColin Cross static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev) 564126c019SColin Cross { 574126c019SColin Cross return 0; 584126c019SColin Cross } 594126c019SColin Cross 604126c019SColin Cross static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev) 614126c019SColin Cross { 624126c019SColin Cross } 634126c019SColin Cross #endif 644126c019SColin Cross 654f86d3a8SLen Brown #endif /* __DRIVER_CPUIDLE_H */ 66