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thermal: Add event notification to thermal framework

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This patch adds event notification support to the generic
thermal sysfs framework in the kernel. The notification is in the
form of a netlink event.

Signed-off-by: R.Durgadoss <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
R.Durgadoss 2010-10-27 03:33:29 +05:30 • committed by Len Brown
commit 4cb1872870
5 changed files with 151 additions and 1 deletions
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12
Documentation/thermal/sysfs-api.txt
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@ -278,3 +278,15 @@ method, the sys I/F structure will be built like this:
|---name: acpitz
|---temp1_input: 37000
|---temp1_crit: 100000
4. Event Notification
The framework includes a simple notification mechanism, in the form of a
netlink event. Netlink socket initialization is done during the _init_
of the framework. Drivers which intend to use the notification mechanism
just need to call generate_netlink_event() with two arguments viz
(originator, event). Typically the originator will be an integer assigned
to a thermal_zone_device when it registers itself with the framework. The
event will be one of:{THERMAL_AUX0, THERMAL_AUX1, THERMAL_CRITICAL,
THERMAL_DEV_FAULT}. Notification can be sent when the current temperature
crosses any of the configured thresholds.