14f86d3a8e297205780cca027e974fd5f81064780Len Brown/* 24f86d3a8e297205780cca027e974fd5f81064780Len Brown * cpuidle.h - The internal header file 34f86d3a8e297205780cca027e974fd5f81064780Len Brown */ 44f86d3a8e297205780cca027e974fd5f81064780Len Brown 54f86d3a8e297205780cca027e974fd5f81064780Len Brown#ifndef __DRIVER_CPUIDLE_H 64f86d3a8e297205780cca027e974fd5f81064780Len Brown#define __DRIVER_CPUIDLE_H 74f86d3a8e297205780cca027e974fd5f81064780Len Brown 84f86d3a8e297205780cca027e974fd5f81064780Len Brown/* For internal use only */ 94f86d3a8e297205780cca027e974fd5f81064780Len Brownextern struct cpuidle_governor *cpuidle_curr_governor; 104f86d3a8e297205780cca027e974fd5f81064780Len Brownextern struct list_head cpuidle_governors; 114f86d3a8e297205780cca027e974fd5f81064780Len Brownextern struct list_head cpuidle_detected_devices; 124f86d3a8e297205780cca027e974fd5f81064780Len Brownextern struct mutex cpuidle_lock; 134f86d3a8e297205780cca027e974fd5f81064780Len Brownextern spinlock_t cpuidle_driver_lock; 1462027aea23fcd14478abdddd3b74a4e0f5fb2984Len Brownextern int cpuidle_disabled(void); 1556cfbf74a17c40f3a741398103c9f5d5a6806715Colin Crossextern int cpuidle_enter_state(struct cpuidle_device *dev, 1656cfbf74a17c40f3a741398103c9f5d5a6806715Colin Cross struct cpuidle_driver *drv, int next_state); 174f86d3a8e297205780cca027e974fd5f81064780Len Brown 184f86d3a8e297205780cca027e974fd5f81064780Len Brown/* idle loop */ 194f86d3a8e297205780cca027e974fd5f81064780Len Brownextern void cpuidle_install_idle_handler(void); 204f86d3a8e297205780cca027e974fd5f81064780Len Brownextern void cpuidle_uninstall_idle_handler(void); 214f86d3a8e297205780cca027e974fd5f81064780Len Brown 224f86d3a8e297205780cca027e974fd5f81064780Len Brown/* governors */ 234f86d3a8e297205780cca027e974fd5f81064780Len Brownextern int cpuidle_switch_governor(struct cpuidle_governor *gov); 244f86d3a8e297205780cca027e974fd5f81064780Len Brown 254f86d3a8e297205780cca027e974fd5f81064780Len Brown/* sysfs */ 268f3e9953e1e4ae5c11e2e880e7d85c03c0180613Daniel Lezcano 278f3e9953e1e4ae5c11e2e880e7d85c03c0180613Daniel Lezcanostruct device; 288f3e9953e1e4ae5c11e2e880e7d85c03c0180613Daniel Lezcano 298a25a2fd126c621f44f3aeaef80d51f00fc11639Kay Sieversextern int cpuidle_add_interface(struct device *dev); 308a25a2fd126c621f44f3aeaef80d51f00fc11639Kay Sieversextern void cpuidle_remove_interface(struct device *dev); 31bf4d1b5ddb78f86078ac6ae0415802d5f0c68f92Daniel Lezcanoextern int cpuidle_add_device_sysfs(struct cpuidle_device *device); 32bf4d1b5ddb78f86078ac6ae0415802d5f0c68f92Daniel Lezcanoextern void cpuidle_remove_device_sysfs(struct cpuidle_device *device); 331aef40e288acfb3cc28ff77528b34ef66683bed6Daniel Lezcanoextern int cpuidle_add_sysfs(struct cpuidle_device *dev); 341aef40e288acfb3cc28ff77528b34ef66683bed6Daniel Lezcanoextern void cpuidle_remove_sysfs(struct cpuidle_device *dev); 354f86d3a8e297205780cca027e974fd5f81064780Len Brown 364126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED 374126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Crossbool cpuidle_state_is_coupled(struct cpuidle_device *dev, 384126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross struct cpuidle_driver *drv, int state); 394126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Crossint cpuidle_enter_state_coupled(struct cpuidle_device *dev, 404126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross struct cpuidle_driver *drv, int next_state); 414126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Crossint cpuidle_coupled_register_device(struct cpuidle_device *dev); 424126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Crossvoid cpuidle_coupled_unregister_device(struct cpuidle_device *dev); 434126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross#else 444126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Crossstatic inline bool cpuidle_state_is_coupled(struct cpuidle_device *dev, 454126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross struct cpuidle_driver *drv, int state) 464126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross{ 474126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross return false; 484126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross} 494126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross 504126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Crossstatic inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev, 514126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross struct cpuidle_driver *drv, int next_state) 524126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross{ 534126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross return -1; 544126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross} 554126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross 564126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Crossstatic inline int cpuidle_coupled_register_device(struct cpuidle_device *dev) 574126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross{ 584126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross return 0; 594126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross} 604126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross 614126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Crossstatic inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev) 624126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross{ 634126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross} 644126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross#endif 654126c0197bc8c58a0bb7fcda07b01b596b6fb4c5Colin Cross 664f86d3a8e297205780cca027e974fd5f81064780Len Brown#endif /* __DRIVER_CPUIDLE_H */ 67