| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * cpuidle.h - The internal header file |
| */ |
| |
| #ifndef __DRIVER_CPUIDLE_H |
| #define __DRIVER_CPUIDLE_H |
| |
| /* For internal use only */ |
| extern struct cpuidle_governor *cpuidle_curr_governor; |
| extern struct list_head cpuidle_governors; |
| extern struct list_head cpuidle_detected_devices; |
| extern struct mutex cpuidle_lock; |
| extern spinlock_t cpuidle_driver_lock; |
| extern int cpuidle_disabled(void); |
| extern int cpuidle_enter_state(struct cpuidle_device *dev, |
| struct cpuidle_driver *drv, int next_state); |
| |
| /* idle loop */ |
| extern void cpuidle_install_idle_handler(void); |
| extern void cpuidle_uninstall_idle_handler(void); |
| |
| /* governors */ |
| extern int cpuidle_switch_governor(struct cpuidle_governor *gov); |
| |
| /* sysfs */ |
| |
| struct device; |
| |
| extern int cpuidle_add_interface(struct device *dev); |
| extern void cpuidle_remove_interface(struct device *dev); |
| extern int cpuidle_add_device_sysfs(struct cpuidle_device *device); |
| extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device); |
| extern int cpuidle_add_sysfs(struct cpuidle_device *dev); |
| extern void cpuidle_remove_sysfs(struct cpuidle_device *dev); |
| |
| #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED |
| bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state); |
| int cpuidle_coupled_state_verify(struct cpuidle_driver *drv); |
| int cpuidle_enter_state_coupled(struct cpuidle_device *dev, |
| struct cpuidle_driver *drv, int next_state); |
| int cpuidle_coupled_register_device(struct cpuidle_device *dev); |
| void cpuidle_coupled_unregister_device(struct cpuidle_device *dev); |
| #else |
| static inline |
| bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state) |
| { |
| return false; |
| } |
| |
| static inline int cpuidle_coupled_state_verify(struct cpuidle_driver *drv) |
| { |
| return 0; |
| } |
| |
| static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev, |
| struct cpuidle_driver *drv, int next_state) |
| { |
| return -1; |
| } |
| |
| static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev) |
| { |
| return 0; |
| } |
| |
| static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev) |
| { |
| } |
| #endif |
| |
| #endif /* __DRIVER_CPUIDLE_H */ |