linux.git/drivers/thermal, branch v4.6-rc2

Thermal: Ignore invalid trip points

2016-03-18T06:10:57+00:00

In some cases, platform thermal driver may report invalid trip points,
thermal core should not take any action for these trip points.

This fixed a regression that bogus trip point starts to screw up thermal
control on some Lenovo laptops, after
commit bb431ba26c5cd0a17c941ca6c3a195a3a6d5d461
Author: Zhang Rui 
Date:   Fri Oct 30 16:31:47 2015 +0800

    Thermal: initialize thermal zone device correctly

    After thermal zone device registered, as we have not read any
    temperature before, thus tz->temperature should not be 0,
    which actually means 0C, and thermal trend is not available.
    In this case, we need specially handling for the first
    thermal_zone_device_update().

    Both thermal core framework and step_wise governor is
    enhanced to handle this. And since the step_wise governor
    is the only one that uses trends, so it's the only thermal
    governor that needs to be updated.

    Tested-by: Manuel Krause 
    Tested-by: szegad 
    Tested-by: prash 
    Tested-by: amish 
    Tested-by: Matthias 
    Reviewed-by: Javi Merino 
    Signed-off-by: Zhang Rui 
    Signed-off-by: Chen Yu 

CC:  #3.18+
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1317190
Link: https://bugzilla.kernel.org/show_bug.cgi?id=114551
Signed-off-by: Zhang Rui

Merge branches 'thermal-core', 'thermal-intel' and 'thermal-soc' into next

2016-03-14T23:54:06+00:00

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into thermal-soc

2016-03-14T23:53:01+00:00

thermal: intel_pch_thermal: Enable Skylake PCH thermal

2016-03-14T23:51:17+00:00

Enabled temperature reporting device of Skylake Platform Controller hub.
The register map is same as the wildcat point thermal currently implemented
in this driver.

Signed-off-by: Srinivas Pandruvada 
Signed-off-by: Zhang Rui

thermal: of-thermal: Add devm version of thermal_zone_of_sensor_register

2016-03-09T18:31:20+00:00

Add resource managed version of thermal_zone_of_sensor_register() and
thermal_zone_of_sensor_unregister().

This helps in reducing the code size in error path, remove of
driver remove callbacks and making proper sequence for deallocations.

Signed-off-by: Laxman Dewangan 
Signed-off-by: Eduardo Valentin

thermal: exynos: Defer probe if vtmu is present but not registered

2016-03-08T22:22:25+00:00

The driver doesn't check if the regulator_get_optional return value is
-EPROBE_DEFER so it will wrongly assume that the regulator couldn't be
found just because the regulator driver wasn't registered yet, i.e:

exynos-tmu 10060000.tmu: Regulator node (vtmu) not found

In this case the return value should be propagated to allow the driver
probe function to be deferred until the regulator driver is registered.

Reviewed-by: Krzysztof Kozlowski 
Reviewed-by: Andi Shyti 
Signed-off-by: Javier Martinez Canillas 
Signed-off-by: Eduardo Valentin

thermal: exynos: Use devm_regulator_get_optional() for vtmu

2016-03-08T22:21:41+00:00

The Exynos TMU DT binding says that the vtmu-supply is optional but the
driver uses devm_regulator_get() that creates a dummy regulator if it's
not defined in the DT. For example the following message is in the log:

10060000.tmu supply vtmu not found, using dummy regulator

Use the optional version of regulator_get() that doesn't create a dummy
regulator and instead returns a -ENODEV errno code. Since it's expected
that a regulator may not be defined and the driver will inform about it:

exynos-tmu 10060000.tmu: Regulator node (vtmu) not found

Reviewed-by: Krzysztof Kozlowski 
Reviewed-by: Andi Shyti 
Signed-off-by: Javier Martinez Canillas 
Signed-off-by: Eduardo Valentin

thermal: exynos: Print a message about exceeded number of supported trip-points

2016-03-08T22:07:32+00:00

When DeviveTree contains more trip-points than SoC can configure
(usually more than four) and polling mode is not enabled, then the
remaining trip-points will be silently ignored. No interrupts will be
generated for them.

This might be quite dangerous when one provides DTB with a
non-configurable critical trip-point, like (assuming four supported
thresholds in TMU):
 - alert @50 C (type: active),
 - alert @60 C (type: active),
 - alert @70 C (type: active),
 - alert @80 C (type: active),
 - critical @120 C (type: critical) <- no interrupts generated.

This is a mistake in DTB so print a message in such case.

Reviewed-by: Chanwoo Choi 
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Eduardo Valentin

thermal: mtk: allow compile testing on UM

2016-03-08T21:34:25+00:00

Following the fix on thermal Kconfig, this
patch adds dependency on HAS_IOMEM so driver
properly compile test on UM arch.

Cc: Krzysztof Kozlowski 
Cc: Zhang Rui 
Cc: Matthias Brugger 
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Signed-off-by: Eduardo Valentin

thermal: tegra_soctherm: fix sign bit of temperature

2016-03-08T20:41:40+00:00

The sign bit of temperature readback is bit 0, not bit 1.
Change to BIT(0) to fix it.

Signed-off-by: Wei Ni 
Reviewed-by: Matt Longnecker 
Signed-off-by: Eduardo Valentin