Signed-off-by: Frans Pop <elendil@xxxxxxxxx> Cc: Zhang Rui <rui.zhang@xxxxxxxxx> Cc: Sujith Thomas <sujith.thomas@xxxxxxxxx> diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt index 48e9c5c..52b63c4 100644 --- a/Documentation/thermal/sysfs-api.txt +++ b/Documentation/thermal/sysfs-api.txt @@ -3,7 +3,7 @@ Generic Thermal Sysfs driver How To Written by Sujith Thomas <sujith.thomas@xxxxxxxxx>, Zhang Rui <rui.zhang@xxxxxxxxx> -Updated: 2 January 2008 +Updated: 21 August 2009 Copyright (c) 2008 Intel Corporation @@ -199,6 +199,16 @@ cdev[0-*]_trip_point point. RO, Optional +passive + Attribute is only present for zones which do not have a passive + cooling policy (_PSV) defined in ACPI. Default is zero and can be + set to a temperature (in millidegrees) to enable a passive trip + point for the zone. Activation is done by polling (default interval: + 10 seconds); the polling interval can be set in + /proc/acpi/thermal/TZN/polling_frequency. + Unit: millidegree Celsius + RW, Optional + ***************************** * Cooling device attributes * ***************************** @@ -230,8 +240,9 @@ thermal_zone_device (thermal_zone1) with 4 trip points in all. It has one processor and one fan, which are both registered as thermal_cooling_device. -If the processor is listed in _PSL method, and the fan is listed in _AL0 -method, the sys I/F structure will be built like this: +If the processor is listed in _PSL method, the fan is listed in _AL0 +method, and the zone has a _PSV method, the sys I/F structure will be +built like this: /sys/class/thermal: -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
