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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2009-12-03 21:19:18 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2009-12-06 16:17:57 +0100 |
| commit | 7a1a8eb58a2c6cd819d17332c5a2c369203635d5 (patch) | |
| tree | 2424ca8b41f97a0d4110218ef75caa50270c194a /include | |
| parent | 965c4ac0613b071d6f035334c5d9d942013df4f9 (diff) | |
| download | linux-stable-7a1a8eb58a2c6cd819d17332c5a2c369203635d5.tar.gz linux-stable-7a1a8eb58a2c6cd819d17332c5a2c369203635d5.tar.bz2 linux-stable-7a1a8eb58a2c6cd819d17332c5a2c369203635d5.zip | |
PM: Add flag for devices capable of generating run-time wake-up events
Apparently, there are devices that can wake up the system from sleep
states and yet are incapable of generating wake-up events at run
time. Thus, introduce a flag indicating if given device is capable
of generating run-time wake-up events.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pm.h | 8 | ||||
| -rw-r--r-- | include/linux/pm_runtime.h | 12 |
2 files changed, 17 insertions, 3 deletions
diff --git a/include/linux/pm.h b/include/linux/pm.h index 3b7e04b95bd2..0d65934246af 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -178,9 +178,10 @@ typedef struct pm_message { * This need not mean that the device should be put into a low power state. * For example, if the device is behind a link which is about to be turned * off, the device may remain at full power. If the device does go to low - * power and if device_may_wakeup(dev) is true, remote wake-up (i.e., a - * hardware mechanism allowing the device to request a change of its power - * state, such as PCI PME) should be enabled for it. + * power and is capable of generating run-time wake-up events, remote + * wake-up (i.e., a hardware mechanism allowing the device to request a + * change of its power state via a wake-up event, such as PCI PME) should + * be enabled for it. * * @runtime_resume: Put the device into the fully active state in response to a * wake-up event generated by hardware or at the request of software. If @@ -428,6 +429,7 @@ struct dev_pm_info { unsigned int idle_notification:1; unsigned int request_pending:1; unsigned int deferred_resume:1; + unsigned int run_wake:1; enum rpm_request request; enum rpm_status runtime_status; int runtime_error; diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 44087044910f..370ce0a6fe4a 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -50,6 +50,16 @@ static inline void pm_runtime_put_noidle(struct device *dev) atomic_add_unless(&dev->power.usage_count, -1, 0); } +static inline bool device_run_wake(struct device *dev) +{ + return dev->power.run_wake; +} + +static inline void device_set_run_wake(struct device *dev, bool enable) +{ + dev->power.run_wake = enable; +} + #else /* !CONFIG_PM_RUNTIME */ static inline int pm_runtime_idle(struct device *dev) { return -ENOSYS; } @@ -73,6 +83,8 @@ static inline bool pm_children_suspended(struct device *dev) { return false; } static inline void pm_suspend_ignore_children(struct device *dev, bool en) {} static inline void pm_runtime_get_noresume(struct device *dev) {} static inline void pm_runtime_put_noidle(struct device *dev) {} +static inline bool device_run_wake(struct device *dev) { return false; } +static inline void device_set_run_wake(struct device *dev, bool enable) {} #endif /* !CONFIG_PM_RUNTIME */ |