diff options
Diffstat (limited to 'include/linux/suspend.h')
| -rw-r--r-- | include/linux/suspend.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 3388c1b6f7d8..5efe743ce1e8 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -201,6 +201,21 @@ struct platform_freeze_ops { */ extern void suspend_set_ops(const struct platform_suspend_ops *ops); extern int suspend_valid_only_mem(suspend_state_t state); + +/* Suspend-to-idle state machnine. */ +enum freeze_state { + FREEZE_STATE_NONE, /* Not suspended/suspending. */ + FREEZE_STATE_ENTER, /* Enter suspend-to-idle. */ + FREEZE_STATE_WAKE, /* Wake up from suspend-to-idle. */ +}; + +extern enum freeze_state __read_mostly suspend_freeze_state; + +static inline bool idle_should_freeze(void) +{ + return unlikely(suspend_freeze_state == FREEZE_STATE_ENTER); +} + extern void freeze_set_ops(const struct platform_freeze_ops *ops); extern void freeze_wake(void); @@ -228,6 +243,7 @@ extern int pm_suspend(suspend_state_t state); static inline void suspend_set_ops(const struct platform_suspend_ops *ops) {} static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; } +static inline bool idle_should_freeze(void) { return false; } static inline void freeze_set_ops(const struct platform_freeze_ops *ops) {} static inline void freeze_wake(void) {} #endif /* !CONFIG_SUSPEND */ |