diff options
Diffstat (limited to 'kernel/drivers/cpuidle/cpuidle.h')
| -rw-r--r-- | kernel/drivers/cpuidle/cpuidle.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/kernel/drivers/cpuidle/cpuidle.h b/kernel/drivers/cpuidle/cpuidle.h new file mode 100644 index 000000000..ee97e9672 --- /dev/null +++ b/kernel/drivers/cpuidle/cpuidle.h @@ -0,0 +1,66 @@ +/* + * 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_device *dev, + struct cpuidle_driver *drv, int state); +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_device *dev, + struct cpuidle_driver *drv, int state) +{ + return false; +} + +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 */ |