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authorMatthew Garrett <mjg59@srcf.ucam.org>2013-07-02 18:41:03 -0400
committerMatthew Garrett <matthew.garrett@nebula.com>2013-07-10 15:42:48 -0400
commit34a956db3774e8cba3f6b52aa9c1d67cf9a496fe (patch)
treefbc6a170ee548c9cf4a170bd6e399bfe5fd1f557 /Documentation
parent8667ca9518bbe0eff2222e69d611f4c8549fcbde (diff)
downloadlinux-34a956db3774e8cba3f6b52aa9c1d67cf9a496fe.tar.bz2
Add support driver for Intel Rapid Start Technology
Intel Rapid Start Technology is a firmware-based suspend-to-disk implementation. Once placed in S3, the device will wake once either a timeout elapses or the battery reaches a critical level. It will then resume to the firmware and copy the contents of RAM to a specialised partition, and then power off the machine. If the user turns the machine back on the firmware will copy the contents of the partition back to RAM and then resume from S3 as normal. This driver provides an interface for configuring the wakeup events and timeout. It still requires firmware support and an appropriate suspend partition. Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-driver-intel-rapid-start21
1 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-rapid-start b/Documentation/ABI/testing/sysfs-driver-intel-rapid-start
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+What: /sys/bus/acpi/intel-rapid-start/wakeup_events
+Date: July 2, 2013
+KernelVersion: 3.11
+Contact: Matthew Garrett <mjg59@srcf.ucam.org>
+Description: An integer representing a set of wakeup events as follows:
+ 1: Wake to enter hibernation when the wakeup timer expires
+ 2: Wake to enter hibernation when the battery reaches a
+ critical level
+
+ These values are ORed together. For example, a value of 3
+ indicates that the system will wake to enter hibernation when
+ either the wakeup timer expires or the battery reaches a
+ critical level.
+
+What: /sys/bus/acpi/intel-rapid-start/wakeup_time
+Date: July 2, 2013
+KernelVersion: 3.11
+Contact: Matthew Garrett <mjg59@srcf.ucam.org>
+Description: An integer representing the length of time the system will
+ remain asleep before waking up to enter hibernation.
+ This value is in minutes.