linux-toradex.git/drivers/thermal, branch tegra-10.7.1 Linux kernel for Apalis and Colibri modules acpi: thermal: Add EOL to the trip_point_N_type strings 2009-11-05T22:33:24+00:00 Amit Kucheria amit.kucheria@canonical.com 2009-10-16T09:46:02+00:00 625120a42bd4371da98808a4ca3e7589083a06d8 Make the trip_point_N_type sysfs files return a string ending in EOL for consistency with other sysfs files. Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com> 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> 
Make the trip_point_N_type sysfs files return a string ending in EOL for
consistency with other sysfs files.

Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com>
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: add missing Kconfig dependency 2009-09-19T05:41:49+00:00 Jan Beulich JBeulich@novell.com 2009-09-18T19:41:10+00:00 df43176c934f2bc01f7615a6e20a4b8e77dcdd11 Otherwise THERMAL_HWMON can be selected when HWMON=n and THERMAL=n, which fails to build. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Matthew Garrett <mjg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com> 
Otherwise THERMAL_HWMON can be selected when HWMON=n and THERMAL=n, which
fails to build.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal_sys: check get_temp return value 2009-08-27T03:06:52+00:00 Michael Brunner mibru@gmx.de 2009-08-26T21:29:25+00:00 0d288162f2afc42b37aab656f4622c076babbca3 The return value of the get_temp function is not checked when doing a thermal zone update. This may lead to a critical shutdown if get_temp fails and the content of the temp variable is incorrectly set higher than the critical trip point. This has been observed on a system with incorrect ACPI implementation where the corresponding methods were not serialized and therefore sometimes triggered ACPI errors (AE_ALREADY_EXISTS). The following critical shutdowns indicated a temperature of 2097 C, which was obviously wrong. The patch adds a return value check that jumps over all trip point evaluations printing a warning if get_temp fails. The trip points are evaluated again on the next polling interval with successful get_temp execution. Signed-off-by: Michael Brunner <mibru@gmx.de> Acked-by: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
The return value of the get_temp function is not checked when doing a
thermal zone update.  This may lead to a critical shutdown if get_temp
fails and the content of the temp variable is incorrectly set higher than
the critical trip point.

This has been observed on a system with incorrect ACPI implementation
where the corresponding methods were not serialized and therefore
sometimes triggered ACPI errors (AE_ALREADY_EXISTS).  The following
critical shutdowns indicated a temperature of 2097 C, which was obviously
wrong.

The patch adds a return value check that jumps over all trip point
evaluations printing a warning if get_temp fails.  The trip points are
evaluated again on the next polling interval with successful get_temp
execution.

Signed-off-by: Michael Brunner <mibru@gmx.de>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
thermal: remove driver_data direct access of struct device 2009-06-16T04:30:27+00:00 Greg Kroah-Hartman gregkh@suse.de 2009-04-30T21:43:31+00:00 0e968a3b6da710294a56460473cac32dc821fd4a In the near future, the driver core is going to not allow direct access to the driver_data pointer in struct device. Instead, the functions dev_get_drvdata() and dev_set_drvdata() should be used. These functions have been around since the beginning, so are backwards compatible with all older kernel versions. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.


Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
thermal: fix off-by-1 error in trip point trigger condition 2009-05-14T17:40:53+00:00 Vladimir Zajac eightgraph@gmail.com 2009-05-06T17:34:21+00:00 29321357ac6db54eeb8574da1f6c3e0ce8cfbb60 This patch fixes a regression caused by commit b1569e99c795bf83b4ddf41c4f1c42761ab7f75e "ACPI: move thermal trip handling to generic thermal layer" which accidentally changed trip point trigger condition to temp > trip_temp This patch changes the trigger condition back to temp >= trip_temp Signed-off-by: Vladimir Zajac <eightgraph@gmail.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com> 
This patch fixes a regression caused by commit
b1569e99c795bf83b4ddf41c4f1c42761ab7f75e
"ACPI: move thermal trip handling to generic thermal layer"
which accidentally changed trip point trigger condition to
  temp > trip_temp

This patch changes the trigger condition back to
  temp >= trip_temp

Signed-off-by: Vladimir Zajac <eightgraph@gmail.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: support forcing support for passive cooling 2009-03-27T20:58:22+00:00 Matthew Garrett mjg59@srcf.ucam.org 2008-12-03T18:00:38+00:00 03a971a2899886006f19f3495973bbd646d8bdae Due to poor thermal design or Linux driving hardware outside its thermal envelope, some systems will reach critical temperature and shut down under high load. This patch adds support for forcing a polling-based passive trip point if the firmware doesn't provide one. The assumption is made that the processor is the most practical means to reduce the dynamic heat generation, so hitting the passive thermal limit will cause the CPU to be throttled until the temperature stabalises around the defined value. UI is provided via a "passive" sysfs entry in the thermal zone directory. It accepts a decimal value in millidegrees celsius, or "0" to disable the functionality. Default behaviour is for this functionality to be disabled. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com> 
Due to poor thermal design or Linux driving hardware outside its thermal
envelope, some systems will reach critical temperature and shut down
under high load. This patch adds support for forcing a polling-based
passive trip point if the firmware doesn't provide one. The assumption
is made that the processor is the most practical means to reduce the
dynamic heat generation, so hitting the passive thermal limit will cause
the CPU to be throttled until the temperature stabalises around the
defined value.

UI is provided via a "passive" sysfs entry in the thermal zone
directory. It accepts a decimal value in millidegrees celsius, or "0" to
disable the functionality. Default behaviour is for this functionality
to be disabled.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
ACPI: move thermal trip handling to generic thermal layer 2009-02-20T23:41:56+00:00 Matthew Garrett mjg59@srcf.ucam.org 2008-12-03T17:55:32+00:00 b1569e99c795bf83b4ddf41c4f1c42761ab7f75e The ACPI code currently carries its own thermal trip handling, meaning that any other thermal implementation will need to reimplement it. Move the code to the generic thermal layer. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com> 
The ACPI code currently carries its own thermal trip handling, meaning that
any other thermal implementation will need to reimplement it. Move the code
to the generic thermal layer.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: use integers rather than strings for thermal values 2009-02-20T15:52:37+00:00 Matthew Garrett mjg59@srcf.ucam.org 2008-11-27T17:48:13+00:00 6503e5df08008b9a47022b5e9ebba658c8fa69af The thermal API currently uses strings to pass values to userspace. This makes it difficult to use from within the kernel. Change the interface to use integers and fix up the consumers. Signed-off-by: Matthew Garrett <mjg@redhat.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com> 
The thermal API currently uses strings to pass values to userspace. This
makes it difficult to use from within the kernel. Change the interface
to use integers and fix up the consumers.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
thermal: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06T18:44:37+00:00 Kay Sievers kay.sievers@vrfy.org 2009-01-06T18:44:37+00:00 354655ea9714e5b0e8d23c90a5382986815687e0 Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
thermal: Create CONFIG_THERMAL_HWMON=n 2008-06-25T23:25:42+00:00 Rene Herman rene.herman@keyaccess.nl 2008-06-24T17:38:56+00:00 16d752397301b95abaa95cbaf9e785d221872311 A bug in libsensors <= 2.10.6 is exposed when this new hwmon I/F is enabled. Create CONFIG_THERMAL_HWMON=n until some time after libsensors 2.10.7 ships so those users can run the latest kernel. libsensors 3.x is already fixed -- those users can use CONFIG_THERMAL_HWMON=y now. Signed-off-by: Rene Herman <rene.herman@gmail.com> Acked-by: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Len Brown <len.brown@intel.com> 
A bug in libsensors <= 2.10.6 is exposed
when this new hwmon I/F is enabled.
Create CONFIG_THERMAL_HWMON=n
until some time after libsensors 2.10.7 ships
so those users can run the latest kernel.

libsensors 3.x is already fixed -- those users
can use CONFIG_THERMAL_HWMON=y now.

Signed-off-by: Rene Herman <rene.herman@gmail.com>
Acked-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Len Brown <len.brown@intel.com>