1/*
2 * cpuidle.h - The internal header file
3 */
4
5#ifndef __DRIVER_CPUIDLE_H
6#define __DRIVER_CPUIDLE_H
7
8/* For internal use only */
9extern struct cpuidle_governor *cpuidle_curr_governor;
10extern struct list_head cpuidle_governors;
11extern struct list_head cpuidle_detected_devices;
12extern struct mutex cpuidle_lock;
13extern spinlock_t cpuidle_driver_lock;
14extern int cpuidle_disabled(void);
15extern int cpuidle_enter_state(struct cpuidle_device *dev,
16		struct cpuidle_driver *drv, int next_state);
17
18/* idle loop */
19extern void cpuidle_install_idle_handler(void);
20extern void cpuidle_uninstall_idle_handler(void);
21
22/* governors */
23extern int cpuidle_switch_governor(struct cpuidle_governor *gov);
24
25/* sysfs */
26
27struct device;
28
29extern int cpuidle_add_interface(struct device *dev);
30extern void cpuidle_remove_interface(struct device *dev);
31extern int cpuidle_add_device_sysfs(struct cpuidle_device *device);
32extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device);
33extern int cpuidle_add_sysfs(struct cpuidle_device *dev);
34extern void cpuidle_remove_sysfs(struct cpuidle_device *dev);
35
36#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
37bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state);
38int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
39		struct cpuidle_driver *drv, int next_state);
40int cpuidle_coupled_register_device(struct cpuidle_device *dev);
41void cpuidle_coupled_unregister_device(struct cpuidle_device *dev);
42#else
43static inline
44bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state)
45{
46	return false;
47}
48
49static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
50		struct cpuidle_driver *drv, int next_state)
51{
52	return -1;
53}
54
55static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev)
56{
57	return 0;
58}
59
60static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev)
61{
62}
63#endif
64
65#endif /* __DRIVER_CPUIDLE_H */
66