diff options
Diffstat (limited to 'Documentation/power')
| -rw-r--r-- | Documentation/power/power_supply_class.txt | 8 | ||||
| -rw-r--r-- | Documentation/power/runtime_pm.txt | 14 |
2 files changed, 10 insertions, 12 deletions
diff --git a/Documentation/power/power_supply_class.txt b/Documentation/power/power_supply_class.txt index 3f10b39b0346..89a8816990ff 100644 --- a/Documentation/power/power_supply_class.txt +++ b/Documentation/power/power_supply_class.txt @@ -135,11 +135,11 @@ CAPACITY_LEVEL - capacity level. This corresponds to POWER_SUPPLY_CAPACITY_LEVEL_*. TEMP - temperature of the power supply. -TEMP_ALERT_MIN - minimum battery temperature alert value in milli centigrade. -TEMP_ALERT_MAX - maximum battery temperature alert value in milli centigrade. +TEMP_ALERT_MIN - minimum battery temperature alert. +TEMP_ALERT_MAX - maximum battery temperature alert. TEMP_AMBIENT - ambient temperature. -TEMP_AMBIENT_ALERT_MIN - minimum ambient temperature alert value in milli centigrade. -TEMP_AMBIENT_ALERT_MAX - maximum ambient temperature alert value in milli centigrade. +TEMP_AMBIENT_ALERT_MIN - minimum ambient temperature alert. +TEMP_AMBIENT_ALERT_MAX - maximum ambient temperature alert. TIME_TO_EMPTY - seconds left for battery to be considered empty (i.e. while battery powers a load) diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index 0f54333b0ff2..b6ce00b2be9a 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -547,13 +547,11 @@ helper functions described in Section 4. In that case, pm_runtime_resume() should be used. Of course, for this purpose the device's runtime PM has to be enabled earlier by calling pm_runtime_enable(). -If the device bus type's or driver's ->probe() callback runs -pm_runtime_suspend() or pm_runtime_idle() or their asynchronous counterparts, -they will fail returning -EAGAIN, because the device's usage counter is -incremented by the driver core before executing ->probe(). Still, it may be -desirable to suspend the device as soon as ->probe() has finished, so the driver -core uses pm_runtime_put_sync() to invoke the subsystem-level idle callback for -the device at that time. +It may be desirable to suspend the device once ->probe() has finished. +Therefore the driver core uses the asyncronous pm_request_idle() to submit a +request to execute the subsystem-level idle callback for the device at that +time. A driver that makes use of the runtime autosuspend feature, may want to +update the last busy mark before returning from ->probe(). Moreover, the driver core prevents runtime PM callbacks from racing with the bus notifier callback in __device_release_driver(), which is necessary, because the @@ -656,7 +654,7 @@ out the following operations: __pm_runtime_disable() with 'false' as the second argument for every device right before executing the subsystem-level .suspend_late() callback for it. - * During system resume it calls pm_runtime_enable() and pm_runtime_put_sync() + * During system resume it calls pm_runtime_enable() and pm_runtime_put() for every device right after executing the subsystem-level .resume_early() callback and right after executing the subsystem-level .resume() callback for it, respectively. |