X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=Documentation%2Fpower%2Finterface.txt;h=8c5b41bf3f363e386181f8adccd33cc2b97f81b2;hb=ac09c349080008fdd54a15616a1b14771772d867;hp=74311d7e0f3c9a9d250de17d241953114b335abe;hpb=bd3c97a7c718bfb9f1e4f31c16c383a5c6f815eb;p=linux-2.6-omap-h63xx.git diff --git a/Documentation/power/interface.txt b/Documentation/power/interface.txt index 74311d7e0f3..8c5b41bf3f3 100644 --- a/Documentation/power/interface.txt +++ b/Documentation/power/interface.txt @@ -18,17 +18,10 @@ states. /sys/power/disk controls the operating mode of the suspend-to-disk -mechanism. Suspend-to-disk can be handled in several ways. The -greatest distinction is who writes memory to disk - the firmware or -the kernel. If the firmware does it, we assume that it also handles -suspending the system. - -If the kernel does it, then we have three options for putting the system -to sleep - using the platform driver (e.g. ACPI or other PM -registers), powering off the system or rebooting the system (for -testing). The system will support either 'firmware' or 'platform', and -that is known a priori. But, the user may choose 'shutdown' or -'reboot' as alternatives. +mechanism. Suspend-to-disk can be handled in several ways. We have a +few options for putting the system to sleep - using the platform driver +(e.g. ACPI or other pm_ops), powering off the system or rebooting the +system (for testing). Additionally, /sys/power/disk can be used to turn on one of the two testing modes of the suspend-to-disk mechanism: 'testproc' or 'test'. If the @@ -44,16 +37,12 @@ is being slow and which device drivers are misbehaving. Reading from this file will display what the mode is currently set to. Writing to this file will accept one of - 'firmware' - 'platform' + 'platform' (only if the platform supports it) 'shutdown' 'reboot' 'testproc' 'test' -It will only change to 'firmware' or 'platform' if the system supports -it. - /sys/power/image_size controls the size of the image created by the suspend-to-disk mechanism. It can be written a string representing a non-negative integer that will be used as an upper