linux-stable.git/Documentation/thermal, branch linux-3.6.y Linux kernel stable tree Thermal: Documentation update 2012-07-25T03:20:40+00:00 Zhang Rui rui.zhang@intel.com 2012-07-25T02:11:00+00:00 8eaa8d6ca27788aa23659082362a608c1fabcdfe With commit 6503e5df08008b9a47022b5e9ebba658c8fa69af, the value of /sys/class/thermal/thermal_zoneX/mode has been changed from user/kernel to enabled/disabled. Update the documentation so that users won't be confused. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> 
With commit 6503e5df08008b9a47022b5e9ebba658c8fa69af,
the value of /sys/class/thermal/thermal_zoneX/mode has been changed
from user/kernel to enabled/disabled.
Update the documentation so that users won't be confused.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Thermal: Add Hysteresis attributes 2012-07-25T03:19:26+00:00 Durgadoss R dugardoss.r@intel.com 2012-07-25T02:10:59+00:00 27365a6c7d64a3bba22ee62109e4a071bbd7f933 The Linux Thermal Framework does not support hysteresis attributes. Most thermal sensors, today, have a hysteresis value associated with trip points. This patch adds hysteresis attributes on a per-trip-point basis, to the Thermal Framework. These attributes are optionally writable. Signed-off-by: Durgadoss R <durgadoss.r@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> 
The Linux Thermal Framework does not support hysteresis
attributes. Most thermal sensors, today, have a
hysteresis value associated with trip points.

This patch adds hysteresis attributes on a per-trip-point
basis, to the Thermal Framework. These attributes are
optionally writable.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Thermal: Make Thermal trip points writeable 2012-07-25T03:17:20+00:00 Durgadoss R dugardoss.r@intel.com 2012-07-25T02:10:58+00:00 c56f5c0342dfee11a1a13d2f5bb7618de5b17590 Some of the thermal drivers using the Generic Thermal Framework require (all/some) trip points to be writeable. This patch makes the trip point temperatures writeable on a per-trip point basis, and modifies the required function call in thermal.c. This patch also updates the Documentation to reflect the new change. Signed-off-by: Durgadoss R <durgadoss.r@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> 
Some of the thermal drivers using the Generic Thermal Framework
require (all/some) trip points to be writeable. This patch makes
the trip point temperatures writeable on a per-trip point basis,
and modifies the required function call in thermal.c. This patch
also updates the Documentation to reflect the new change.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: Rename generate_netlink_event 2012-01-23T08:15:25+00:00 Jean Delvare khali@linux-fr.org 2011-11-04T09:31:04+00:00 2d58d7ea9164da59d0ea82fdf80e3ababe52d58c It doesn't seem right for the thermal subsystem to export a symbol named generate_netlink_event. This function is thermal-specific and its name should reflect that fact. Rename it to thermal_generate_netlink_event. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: R.Durgadoss <durgadoss.r@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> 
It doesn't seem right for the thermal subsystem to export a symbol
named generate_netlink_event. This function is thermal-specific and
its name should reflect that fact. Rename it to
thermal_generate_netlink_event.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: R.Durgadoss <durgadoss.r@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: Add event notification to thermal framework 2011-01-12T05:08:35+00:00 R.Durgadoss durgadoss.r@intel.com 2010-10-26T22:03:29+00:00 4cb18728709683c91a5f6f8d5f337bfb498b089a 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 <durgadoss.r@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> 
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 <durgadoss.r@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: add sanity check for the passive attribute 2009-11-05T23:18:10+00:00 Frans Pop elendil@planet.nl 2009-10-26T07:39:02+00:00 3d8e3ad879441ae14c5957b933028daf39d252b0 Values below 1000 milli-celsius don't make sense and can cause the system to go into a thermal heart attack: the actual temperature will always be lower and thus the system will be throttled down to its lowest setting. An additional problem is that values below 1000 will show as 0 in /proc/acpi/thermal/TZx/trip_points:passive. cat passive 0 echo -n 90 >passive bash: echo: write error: Invalid argument echo -n 90000 >passive cat passive 90000 Signed-off-by: Frans Pop <elendil@planet.nl> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com> 
Values below 1000 milli-celsius don't make sense and can cause the
system to go into a thermal heart attack: the actual temperature
will always be lower and thus the system will be throttled down to
its lowest setting.

An additional problem is that values below 1000 will show as 0 in
/proc/acpi/thermal/TZx/trip_points:passive.

cat passive
0
echo -n 90 >passive
bash: echo: write error: Invalid argument
echo -n 90000 >passive
cat passive
90000

Signed-off-by: Frans Pop <elendil@planet.nl>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: sysfs-api.txt - document passive attribute for thermal zones 2009-11-05T23:11:18+00:00 Frans Pop elendil@planet.nl 2009-10-26T07:39:00+00:00 29226ed3c3b5cd0b2b0b1fb40ffeac3f796b80e9 Signed-off-by: Frans Pop <elendil@planet.nl> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com> 
Signed-off-by: Frans Pop <elendil@planet.nl>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: sysfs-api.txt - reformat for improved readability 2009-11-05T23:06:05+00:00 Frans Pop elendil@planet.nl 2009-10-26T07:38:59+00:00 38bb0849a6799e05bb474a88f198522ae4ecace2 The document currently uses large indentations which make the text too wide for easy readability. Also improve general consistency. Signed-off-by: Frans Pop <elendil@planet.nl> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com> 
The document currently uses large indentations which make the text
too wide for easy readability. Also improve general consistency.

Signed-off-by: Frans Pop <elendil@planet.nl>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: update the documentation 2008-04-29T06:49:47+00:00 Zhang Rui rui.zhang@intel.com 2008-04-22T00:50:09+00:00 e9ae71078b2c8657c0e8de808b76b76049806906 Update the documentation for the thermal driver hwmon sys I/F. Change the ACPI thermal zone type to be consistent with hwmon. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Len Brown <len.brown@intel.com> 
Update the documentation for the thermal driver hwmon sys I/F.

Change the ACPI thermal zone type to be consistent with hwmon.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: fix generic thermal I/F for hwmon 2008-03-13T05:49:01+00:00 Zhang, Rui rui.zhang@intel.com 2008-02-27T00:37:50+00:00 3152fb9f11cdd2fd8688c2c5cb805e5c09b53dd9 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> 
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>