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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-04-11 22:41:48 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-04-11 22:41:48 +0200
commit41a2a4665d401f79912a3da83ff9ef3e502bc12e (patch)
treec1183d82f60df38205921e293a022d47d90268b2 /Documentation/ABI
parent75eb2d13acca49c3c4f1c96fb04d6c9fd6013e78 (diff)
downloadlinux-41a2a4665d401f79912a3da83ff9ef3e502bc12e.tar.gz
ACPI / PM: Expose lists of device wakeup power resources to user space
Commit 18a3870 (ACPI / PM: Expose lists of device power resources to user space) exposed the lists of ACPI power resources associated with power states of ACPI devices, but it didn't expose the lists of ACPI wakeup power resources, which also is necessary to get the full picture of dependencies between ACPI devices and power resources. For this reason, for every ACPI device node having a list of ACPI wakeup power resources associated with it, expose that list to user space in analogy with commit 18a3870. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/ABI')
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diff --git a/Documentation/ABI/testing/sysfs-devices-power_resources_wakeup b/Documentation/ABI/testing/sysfs-devices-power_resources_wakeup
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+What: /sys/devices/.../power_resources_wakeup/
+Date: April 2013
+Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Description:
+ The /sys/devices/.../power_resources_wakeup/ directory is only
+ present for device objects representing ACPI device nodes that
+ require ACPI power resources for wakeup signaling.
+
+ If present, it contains symbolic links to device directories
+ representing ACPI power resources that need to be turned on for
+ the given device node to be able to signal wakeup. The names of
+ the links are the same as the names of the directories they
+ point to.