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    SubjectRe: [PATCH 2/6] thermal: sysfs-api.txt - document passive attribute for thermal zones
    Date
    On Monday 31 August 2009, Zhang Rui wrote:
    > > +passive
    > > + Attribute is only present for zones which do not have a passive
    > > + cooling policy (_PSV) defined in ACPI.
    >
    > We should not involve any platform specific stuff in this
    > documentation. how about "Attribute is only present for zones in which
    > the passive cooling policy is not supported by native thermal driver"
    [...]
    > > -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:
    >
    > For an ACPI thermal zone, supporting passive cooling means that both
    > _PSL and _PSV are available.
    > so I don't think we need to change this. :)

    OK. Updated patch below.


    From: Frans Pop <elendil@planet.nl>
    Subject: thermal: sysfs-api.txt - document passive attribute for thermal zones

    Signed-off-by: Frans Pop <elendil@planet.nl>
    Cc: Zhang Rui <rui.zhang@intel.com>
    Cc: Sujith Thomas <sujith.thomas@intel.com>
    Cc: Matthew Garrett <mjg59@srcf.ucam.org>

    diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
    index 895337f..a87dc27 100644
    --- a/Documentation/thermal/sysfs-api.txt
    +++ b/Documentation/thermal/sysfs-api.txt
    @@ -199,6 +199,15 @@ cdev[0-*]_trip_point
    point.
    RO, Optional

    +passive
    + Attribute is only present for zones in which the passive cooling
    + policy is not supported by native thermal driver. 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
    + with an interval of 1 second.
    + Unit: millidegrees Celsius
    + RW, Optional
    +
    *****************************
    * Cooling device attributes *
    *****************************

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