| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * cpuidle.h - The internal header file |
| 4 | */ |
| 5 | |
| 6 | #ifndef __DRIVER_CPUIDLE_H |
| 7 | #define __DRIVER_CPUIDLE_H |
| 8 | |
| 9 | /* For internal use only */ |
| 10 | extern struct cpuidle_governor *cpuidle_curr_governor; |
| 11 | extern struct list_head cpuidle_governors; |
| 12 | extern struct list_head cpuidle_detected_devices; |
| 13 | extern struct mutex cpuidle_lock; |
| 14 | extern spinlock_t cpuidle_driver_lock; |
| 15 | extern int cpuidle_disabled(void); |
| 16 | extern int cpuidle_enter_state(struct cpuidle_device *dev, |
| 17 | struct cpuidle_driver *drv, int next_state); |
| 18 | |
| 19 | /* idle loop */ |
| 20 | extern void cpuidle_install_idle_handler(void); |
| 21 | extern void cpuidle_uninstall_idle_handler(void); |
| 22 | |
| 23 | /* governors */ |
| 24 | extern int cpuidle_switch_governor(struct cpuidle_governor *gov); |
| 25 | |
| 26 | /* sysfs */ |
| 27 | |
| 28 | struct device; |
| 29 | |
| 30 | extern int cpuidle_add_interface(struct device *dev); |
| 31 | extern void cpuidle_remove_interface(struct device *dev); |
| 32 | extern int cpuidle_add_device_sysfs(struct cpuidle_device *device); |
| 33 | extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device); |
| 34 | extern int cpuidle_add_sysfs(struct cpuidle_device *dev); |
| 35 | extern void cpuidle_remove_sysfs(struct cpuidle_device *dev); |
| 36 | |
| 37 | #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED |
| 38 | bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state); |
| 39 | int cpuidle_coupled_state_verify(struct cpuidle_driver *drv); |
| 40 | int cpuidle_enter_state_coupled(struct cpuidle_device *dev, |
| 41 | struct cpuidle_driver *drv, int next_state); |
| 42 | int cpuidle_coupled_register_device(struct cpuidle_device *dev); |
| 43 | void cpuidle_coupled_unregister_device(struct cpuidle_device *dev); |
| 44 | #else |
| 45 | static inline |
| 46 | bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state) |
| 47 | { |
| 48 | return false; |
| 49 | } |
| 50 | |
| 51 | static inline int cpuidle_coupled_state_verify(struct cpuidle_driver *drv) |
| 52 | { |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev, |
| 57 | struct cpuidle_driver *drv, int next_state) |
| 58 | { |
| 59 | return -1; |
| 60 | } |
| 61 | |
| 62 | static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev) |
| 63 | { |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev) |
| 68 | { |
| 69 | } |
| 70 | #endif |
| 71 | |
| 72 | #endif /* __DRIVER_CPUIDLE_H */ |