kernel/git/stable/linux.git/Documentation/power/devices.txt, branch master

PM / core / docs: Convert sleep states API document to reST

2017-02-06T18:25:55+00:00

Move the document describing the system sleep state transitions API for devices to Documentation/driver-api/pm/, convert it to reST and update it to use current terminology. Also remove the remaining reference to the old version of it from pm.h. The new document still contains references to some documents in the .txt format that will be converted later. Signed-off-by: Rafael J. Wysocki Signed-off-by: Jonathan Corbet

PM / doc: Update device documentation for devices in IRQ-safe PM domains

2016-10-24T21:48:22+00:00

Update documentation to reflect the changes made to support IRQ safe PM domains. Suggested-by: Rafael J. Wysocki Signed-off-by: Lina Iyer Signed-off-by: Rafael J. Wysocki

PM / sleep: Allow devices without runtime PM to do direct-complete

2015-07-21T21:14:22+00:00

Don't unset the direct_complete flag on devices that have runtime PM disabled, if they are runtime suspended. This is needed because otherwise ancestor devices wouldn't be able to do direct_complete without adding runtime PM support to all its descendants. Also removes pm_runtime_suspended_if_enabled() because it's now unused. Signed-off-by: Tomeu Vizoso Signed-off-by: Alan Stern Signed-off-by: Rafael J. Wysocki

PM / sleep: Update device PM documentation to cover direct_complete

2014-05-16T21:15:44+00:00

Update the device PM documentation in devices.txt and runtime_pm.txt to reflect the changes in the system suspend and resume handling related to the introduction of the new power.direct_complete flag. Signed-off-by: Rafael J. Wysocki Acked-by: Alan Stern

doc: fix double words

2014-03-21T12:16:58+00:00

Fix double words "the the" in various files within Documentations. Signed-off-by: Masanari Iida Signed-off-by: Jiri Kosina

PM: Documentation update for freeze state

2013-05-13T23:41:37+00:00

Signed-off-by: Zhang Rui Signed-off-by: Rafael J. Wysocki

PM / Documentation: fix typos in power management description

2012-07-03T16:32:51+00:00

Just two missing characters. Signed-off-by: Oskar Schirmer Signed-off-by: Rafael J. Wysocki

PM / Sleep: Introduce "late suspend" and "early resume" of devices

2012-01-29T19:38:29+00:00

The current device suspend/resume phases during system-wide power transitions appear to be insufficient for some platforms that want to use the same callback routines for saving device states and related operations during runtime suspend/resume as well as during system suspend/resume. In principle, they could point their .suspend_noirq() and .resume_noirq() to the same callback routines as their .runtime_suspend() and .runtime_resume(), respectively, but at least some of them require device interrupts to be enabled while the code in those routines is running. It also makes sense to have device suspend-resume callbacks that will be executed with runtime PM disabled and with device interrupts enabled in case someone needs to run some special code in that context during system-wide power transitions. Apart from this, .suspend_noirq() and .resume_noirq() were introduced as a workaround for drivers using shared interrupts and failing to prevent their interrupt handlers from accessing suspended hardware. It appears to be better not to use them for other porposes, or we may have to deal with some serious confusion (which seems to be happening already). For the above reasons, introduce new device suspend/resume phases, "late suspend" and "early resume" (and analogously for hibernation) whose callback will be executed with runtime PM disabled and with device interrupts enabled and whose callback pointers generally may point to runtime suspend/resume routines. Signed-off-by: Rafael J. Wysocki Reviewed-by: Mark Brown Reviewed-by: Kevin Hilman

PM: Run the driver callback directly if the subsystem one is not there

2011-12-21T21:01:05+00:00

Make the PM core execute driver PM callbacks directly if the corresponding subsystem callbacks are not present. There are three reasons for doing that. First, it reflects the behavior of drivers/base/dd.c:really_probe() that runs the driver's .probe() callback directly if the bus type's one is not defined, so this change will remove one arbitrary difference between the PM core and the remaining parts of the driver core. Second, it will allow some subsystems, whose PM callbacks don't do anything except for executing driver callbacks, to be simplified quite a bit by removing those "forward-only" callbacks. Finally, it will allow us to remove one level of indirection in the system suspend and resume code paths where it is not necessary, which is going to lead to less debug noise with initcall_debug passed in the kernel command line (messages won't be printed for driverless devices whose subsystems don't provide PM callbacks among other things). Signed-off-by: Rafael J. Wysocki

PM / Sleep: Update documentation related to system wakeup

2011-11-28T21:14:45+00:00

The system wakeup section of Documentation/power/devices.txt is outdated, so make it agree with the current code. Signed-off-by: Rafael J. Wysocki