projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 4f86d3a8 LB |
2 | /* |
| 3 | * cpuidle.h - The internal header file | |
| 4 | */ | |
| 5 | ||
| 6 | #ifndef __DRIVER_CPUIDLE_H | |
| 7 | #define __DRIVER_CPUIDLE_H | |
| 8 | ||
| 4f86d3a8 | 9 | /* For internal use only */ |
| 61cb5758 | 10 | extern char param_governor[]; |
| 4f86d3a8 | 11 | extern struct cpuidle_governor *cpuidle_curr_governor; |
| cb5d8c45 | 12 | extern struct cpuidle_governor *cpuidle_prev_governor; |
| 4f86d3a8 LB |
13 | extern struct list_head cpuidle_governors; |
| 14 | extern struct list_head cpuidle_detected_devices; | |
| 15 | extern struct mutex cpuidle_lock; | |
| 16 | extern spinlock_t cpuidle_driver_lock; | |
| 62027aea | 17 | extern int cpuidle_disabled(void); |
| 56cfbf74 CC |
18 | extern int cpuidle_enter_state(struct cpuidle_device *dev, |
| 19 | struct cpuidle_driver *drv, int next_state); | |
| 4f86d3a8 LB |
20 | |
| 21 | /* idle loop */ | |
| 22 | extern void cpuidle_install_idle_handler(void); | |
| 23 | extern void cpuidle_uninstall_idle_handler(void); | |
| 24 | ||
| 25 | /* governors */ | |
| cb5d8c45 | 26 | extern struct cpuidle_governor *cpuidle_find_governor(const char *str); |
| 4f86d3a8 LB |
27 | extern int cpuidle_switch_governor(struct cpuidle_governor *gov); |
| 28 | ||
| 29 | /* sysfs */ | |
| 8f3e9953 DL |
30 | |
| 31 | struct device; | |
| 32 | ||
| bf6479db | 33 | extern int cpuidle_add_interface(void); |
| 8a25a2fd | 34 | extern void cpuidle_remove_interface(struct device *dev); |
| bf4d1b5d DL |
35 | extern int cpuidle_add_device_sysfs(struct cpuidle_device *device); |
| 36 | extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device); | |
| 1aef40e2 DL |
37 | extern int cpuidle_add_sysfs(struct cpuidle_device *dev); |
| 38 | extern void cpuidle_remove_sysfs(struct cpuidle_device *dev); | |
| 4f86d3a8 | 39 | |
| 4126c019 | 40 | #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED |
| 4c1ed5a6 | 41 | bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state); |
| abceaa9c | 42 | int cpuidle_coupled_state_verify(struct cpuidle_driver *drv); |
| 4126c019 CC |
43 | int cpuidle_enter_state_coupled(struct cpuidle_device *dev, |
| 44 | struct cpuidle_driver *drv, int next_state); | |
| 45 | int cpuidle_coupled_register_device(struct cpuidle_device *dev); | |
| 46 | void cpuidle_coupled_unregister_device(struct cpuidle_device *dev); | |
| 47 | #else | |
| 4c1ed5a6 XP |
48 | static inline |
| 49 | bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state) | |
| 4126c019 CC |
50 | { |
| 51 | return false; | |
| 52 | } | |
| 53 | ||
| abceaa9c XP |
54 | static inline int cpuidle_coupled_state_verify(struct cpuidle_driver *drv) |
| 55 | { | |
| 56 | return 0; | |
| 57 | } | |
| 58 | ||
| 4126c019 CC |
59 | static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev, |
| 60 | struct cpuidle_driver *drv, int next_state) | |
| 61 | { | |
| 62 | return -1; | |
| 63 | } | |
| 64 | ||
| 65 | static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev) | |
| 66 | { | |
| 67 | return 0; | |
| 68 | } | |
| 69 | ||
| 70 | static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev) | |
| 71 | { | |
| 72 | } | |
| 73 | #endif | |
| 74 | ||
| 4f86d3a8 | 75 | #endif /* __DRIVER_CPUIDLE_H */ |