Commit graph

406 commits

Author SHA1 Message Date
Rickard Strandqvist
fbe2ddcdcc thermal: ti-soc-thermal: ti-bandgap.c: Cleaning up wrong address is checked
Wrong address is checked after memory allocation.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-07-01 09:52:35 +08:00
Anson Huang
d0f9d64a0b Thermal: imx: correct critical trip temperature setting
On latest i.MX6 SOC with thermal calibration data of 0x5A100000,
the critical trip temperature will be an invalid value and
cause system auto shutdown as below log:

thermal thermal_zone0: critical temperature reached(42 C),shutting down

So, with universal formula for thermal sensor, only room
temperature point is calibrated, which means the calibration
data read from fuse only has valid data of bit [31:20], others
are all 0, the critical trip point temperature can NOT depend
on the hot point calibration data, here we set it to 20 C higher
than default passive temperature.

Signed-off-by: Anson Huang <b20788@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-07-01 09:22:28 +08:00
Punit Agrawal
dd354b84d4 thermal: Bind cooling devices with the correct arguments
When binding cooling devices to thermal zones created from the device
tree the minimum and maximum cooling states are in the wrong order
leading to failure to bind.

Fix the order of cooling states in the call to
thermal_zone_bind_cooling_device to fix this.

Cc:Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-06-30 10:20:27 +08:00
Stephen Boyd
ca9521b770 thermal: Add braces around suspect code
It looks like this code is missing braces, otherwise the if
statement shouldn't have been indented. Fix it.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-06-30 10:18:57 +08:00
Aaron Lu
e8db5d6736 thermal: hwmon: Make the check for critical temp valid consistent
On 05/21/2014 04:22 PM, Aaron Lu wrote:
> On 05/21/2014 01:57 PM, Kui Zhang wrote:
>> Hello,
>>
>> I get following error when rmmod thermal.
>>
>> rmmod  thermal
>> Killed

While dealing with this problem, I found another problem that also
results in a kernel crash on thermal module removal:

From: Aaron Lu <aaron.lu@intel.com>
Date: Wed, 21 May 2014 16:05:38 +0800
Subject: [PATCH] thermal: hwmon: Make the check for critical temp valid consistent

We used the tz->ops->get_crit_temp && !tz->ops->get_crit_temp(tz, temp)
to decide if we need to create the temp_crit attribute file but we just
check if tz->ops->get_crit_temp exists to decide if we need to remove
that attribute file. Some ACPI thermal zone doesn't have a valid critical
trip point and that would result in removing a non-existent device file
on thermal module unload.

Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-06-30 10:17:27 +08:00
Linus Torvalds
c31c24b825 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management update from Zhang Rui:
 "Specifics:

   - fix a bug in Exynos thermal driver, which overwrites the hardware
     trip point threshold when updating software trigger levels and
     results in emergency shutdown.  From: Tushar Behera.

   - add thermal sensor support for Armada 375 and 38x SoCs.  From
     Ezequiel Garcia.

   - add TMU (Thermal Management Unit) support for Exynos5260 and
     Exynos5420 SoCs.  From Naveen Krishna Chatradhi.

   - add support for the additional digital temperature sensors in the
     Intel SoCs like Bay Trail.  From: Srinivas Pandruvada.

   - a couple of cleanups and small fixes from Jingoo Han, Bartlomiej
     Zolnierkiewicz, Geert Uytterhoeven, Jacob Pan, Paul Walmsley and
     Lan,Tianyu"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (21 commits)
  thermal: spear: remove unnecessary OOM messages
  thermal: exynos: remove unnecessary OOM messages
  thermal: rcar: remove unnecessary OOM messages
  thermal: armada: Support Armada 380 SoC
  thermal: armada: Support Armada 375 SoC
  thermal: armada: Allow to specify an 'inverted readout' sensor
  thermal: armada: Pass the platform_device to init_sensor()
  thermal: armada: Add generic infrastructure to handle the sensor
  thermal: armada: Add infrastructure to support generic formulas
  thermal: armada: Rename armada_thermal_ops struct
  thermal/intel_powerclamp: add newer cpu ids
  thermal: rcar: Use pm_runtime_put() i.s.o. pm_runtime_put_sync()
  thermal: samsung: Only update available threshold limits
  Thermal/int3403: Fix thermal hysteresis unit conversion
  thermal: Intel SoC DTS thermal
  thermal: samsung: Add TMU support for Exynos5260 SoCs
  thermal: samsung: Add TMU support for Exynos5420 SoCs
  thermal: samsung: change base_common to more meaningful base_second
  thermal: samsung: replace inten_ bit fields with intclr_
  thermal: offer Samsung thermal support only when ARCH_EXYNOS is defined
  ...
2014-06-11 14:26:21 -07:00
Zhang Rui
63745aa72e Merge branches 'armada-375-380-soc-support', 'eduardo-thermal-soc-fixes', 'intel-soc-dts-thermal' and 'thermal-soc-fixes' of .git into next 2014-05-15 17:18:02 +08:00
Jingoo Han
fa018d3eed thermal: spear: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:15:26 +08:00
Jingoo Han
2a9675b39a thermal: exynos: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:15:26 +08:00
Jingoo Han
b0a60d88d6 thermal: rcar: remove unnecessary OOM messages
The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:15:26 +08:00
Ezequiel Garcia
e6e0a68c6c thermal: armada: Support Armada 380 SoC
Now that a generic infrastructure is in place, it's possible to support
the Armada 380 SoC thermal sensor. This sensor is similar to the one
available in the already supported SoCs, with its specific temperature formula
and specific sensor initialization.

Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:12:49 +08:00
Ezequiel Garcia
e2d5f05b74 thermal: armada: Support Armada 375 SoC
Now that a generic infrastructure is in place, it's possible to support
the new Armada 375 SoC thermal sensor. This sensor is similar to the one
available in the already supported SoCs, with its specific temperature formula
and specific sensor initialization.

In addition, we also add support for the Z1 SoC stepping, which needs
an initialization-quirk to work properly.

Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:12:49 +08:00
Ezequiel Garcia
fd2c94d5a3 thermal: armada: Allow to specify an 'inverted readout' sensor
In order to support inverted-formula thermal sensor readout, this commit
introduces an 'inverted' field in the SoC-specific structure which
allows to specify an inversion of the temperature formula.

Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:12:48 +08:00
Ezequiel Garcia
04bf3d7e5b thermal: armada: Pass the platform_device to init_sensor()
In order to perform SoC-specific quirks on platforms that need them,
this commit adds a new parameter to the init_sensor() function.
This will be used to support early silicons of the Armada 375 SoC,
to workaround some hardware issues.

Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:12:47 +08:00
Ezequiel Garcia
1fcacca40a thermal: armada: Add generic infrastructure to handle the sensor
In order to support similar SoC where the sensor value and valid
bit can have different shifts and/or mask, we add such fields to the
per-variant structure, instead of having the values hardcoded.

Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:12:46 +08:00
Ezequiel Garcia
9484bc62ca thermal: armada: Add infrastructure to support generic formulas
In order to support other similar SoC, with different sensor
coefficients, this commit adds the coeficients to the per-variant
structure, instead of having the formula hardcoded.

Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:12:34 +08:00
Ezequiel Garcia
66fdb7b635 thermal: armada: Rename armada_thermal_ops struct
As preparation work to add a generic infrastructure to support
different SoC variants, the armada_thermal_ops will be used
to host the SoC-specific fields, such as formula values and
register shifts.

For this reason, the name armada_thermal_ops is no longer suitable,
and this commit replaces it with armada_thermal_data.

Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 17:11:07 +08:00
Jacob Pan
9a17f56c59 thermal/intel_powerclamp: add newer cpu ids
Add support for Broadwell and Valleyview CPUs

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
2014-05-15 17:02:18 +08:00
Geert Uytterhoeven
09be511cda thermal: rcar: Use pm_runtime_put() i.s.o. pm_runtime_put_sync()
There's no need for this to be synchronous

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 16:47:39 +08:00
Tushar Behera
c65d34735a thermal: samsung: Only update available threshold limits
Currently the threshold limits are updated in 2 stages, once for all
software trigger levels and again for hardware trip point.

While updating the software trigger levels, it overwrites the threshold
limit for hardware trip point thereby forcing the Exynos core to issue
an emergency shutdown.

Updating only the required fields in threshold register fixes this issue.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 16:44:16 +08:00
Zhang Rui
9550b8d1dc Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into thermal-soc-fixes 2014-05-15 16:41:34 +08:00
lan,Tianyu
ced2284339 Thermal/int3403: Fix thermal hysteresis unit conversion
Thermal hysteresis represents a temperature difference.
But the original code treats it as a temperature value,
Convert it from tenths of degree Kelvin to Milli-Celsius
by deducing 273200. This is not right.

Kelvin and Celsius have same degree size. From temperature
difference view, the conversion between tenths of degree
Kelvin unit and Milli-Celsius unit is just to multiply 100.

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 16:38:48 +08:00
Srinivas Pandruvada
bc40b5e320 thermal: Intel SoC DTS thermal
In the Intel SoCs like Bay Trail, there are 2 additional digital temperature
sensors(DTS), in addition to the standard DTSs in the core. Also they support
4 programmable thresholds, out of which two can be used by OSPM. These
thresholds can be used by OSPM thermal control. Out of these two thresholds,
one is used by driver and one user mode can change via thermal sysfs to get
notifications on threshold violations.

The driver defines one critical trip points, which is set to TJ MAX - offset.
The offset can be changed via module parameter (default 5C). Also it uses
one of the thresholds to get notification for this temperature violation.
This is very important for orderly shutdown as the many of these devices don't
have ACPI thermal zone, and expects that there is some other thermal control
mechanism present in OSPM. When a Linux distro is used without additional
specialized thermal control program, BIOS can do force shutdown when thermals
are not under control. When temperature reaches critical, the Linux thermal
core will initiate an orderly shutdown.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-05-15 16:37:24 +08:00
Naveen Krishna Chatradhi
923488a53e thermal: samsung: Add TMU support for Exynos5260 SoCs
This patch adds the registers, bit fields and compatible strings
required to support for the 5 TMU channels on Exynos5260.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-05-06 14:55:42 -04:00
Naveen Krishna Chatradhi
14a11dc7e0 thermal: samsung: Add TMU support for Exynos5420 SoCs
Exynos5420 has 5 TMU channels, the TRIMINFO register is
misplaced for TMU channels 2, 3 and 4
TRIMINFO at 0x1006c000 contains data for TMU channel 3
TRIMINFO at 0x100a0000 contains data for TMU channel 4
TRIMINFO at 0x10068000 contains data for TMU channel 2

This patch
1 Adds the neccessary register changes and arch information
   to support Exynos5420 SoCs.
2. Handles the gate clock for misplaced TRIMINFO register
3. Updates the Documentation at
   Documentation/devicetree/bindings/thermal/exynos-thermal.txt

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-05-06 14:51:32 -04:00
Naveen Krishna Chatradhi
9025d563cd thermal: samsung: change base_common to more meaningful base_second
On Exynos5440 and Exynos5420 there are registers common
across the TMU channels.

To support that, we introduced a ADDRESS_MULTIPLE flag in the
driver and the 2nd set of register base and size are provided
in the "reg" property of the node.

As per Amit's suggestion, this patch changes the base_common
to base_second and SHARED_MEMORY to ADDRESS_MULTIPLE.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-05-06 14:51:32 -04:00
Naveen Krishna Chatradhi
74429c2f03 thermal: samsung: replace inten_ bit fields with intclr_
This patch replaces the inten_rise_shift/mask and inten_fall_shift/mask
with intclr_rise_shift/mask and intclr_fall_shift/mask respectively.
Currently, inten_rise_shift/mask and inten_fall_shift/mask bits are only used
to configure intclr related registers.

Description of H/W:
The offset for the bits in the CLEAR register are not consistent across TMU
modules in Exynso5250, 5420 and 5440.

On Exynos5250, the FALL interrupt related en, status and clear bits are
available at an offset of
16 in INTEN, INTSTAT registers and at an offset of
12 in INTCLEAR register.

On Exynos5420, the FALL interrupt related en, status and clear bits are
available at an offset of
16 in INTEN, INTSTAT and INTCLEAR registers.

On Exynos5440,
the FALL_IRQEN bits are at an offset of 4
and the RISE_IRQEN bits are at an offset of 0

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-05-06 14:51:32 -04:00
Bartlomiej Zolnierkiewicz
4de458174a thermal: offer Samsung thermal support only when ARCH_EXYNOS is defined
Menu for Samsung thermal support is visible on all Samsung
platforms while thermal drivers are currently available only
for EXYNOS SoCs. Fix it by replacing PLAT_SAMSUNG dependency
with ARCH_EXYNOS one.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-05-06 14:51:32 -04:00
Paul Walmsley
c68789e534 thermal: ti-soc-thermal: clk_round_rate() can return a zero upon error
Treat both negative and zero return values from clk_round_rate() as
errors.  This is needed since subsequent patches will convert
clk_round_rate()'s return value to be an unsigned type, rather than a
signed type, since some clock sources can generate rates higher than
(2^31)-1 Hz.

Eventually, when calling clk_round_rate(), only a return value of zero
will be considered a error.  All other values will be considered valid
rates.  The comparison against values less than 0 is kept to preserve
the correct behavior in the meantime.

This patch also gets rid of a comparison between unsigned and signed
values; a side-benefit.

Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Eduardo Valentin <eduardo.valentin@ti.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-05-06 14:35:19 -04:00
Stratos Karafotis
3c84ef3af7 thermal: cpu_cooling: Use cpufreq_for_each_valid_entry macro for iteration
The cpufreq core now supports the cpufreq_for_each_valid_entry macro
helper for iteration over the cpufreq_frequency_table, so use it.

Also remove the redundant !! operator.

It should have no functional changes.

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-30 00:06:49 +02:00
Linus Torvalds
190a3998be Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
 "We only have a couple of fixes/cleanups for platform thermal drivers
  this time.

  Specifics:

   - rcar thermal driver: avoid updating the thermal zone in case an IRQ
     was triggered but the temperature didn't effectively change.  From
     Patrick Titiano.

   - update the imx thermal driver' formula of converting thermal
     sensor' raw date to real temperature in degree C.  From Anson
     Huang.

   - trivial code cleanups of ti soc thermal and rcar thermal driver
     from Jingoo Han and Patrick Titiano"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: rcar-thermal: update thermal zone only when temperature changes
  thermal: rcar-thermal: fix same mask applied twice
  thermal: ti-soc-thermal: Use SIMPLE_DEV_PM_OPS macro
  thermal: imx: update formula for thermal sensor
2014-04-10 09:15:46 -07:00
Patrick Titiano
9477165ec5 thermal: rcar-thermal: update thermal zone only when temperature changes
Avoid updating the thermal zone in case an IRQ was triggered but the
temperature didn't effectively change.
Note this is not a driver issue.
Below is a captured debug trace illustrating the purpose of this patch:
out of 8 thermal zone updates, only 2 are actually necessary.

[   41.120000] rcar_thermal_work(): cctemp=25000
[   41.120000] rcar_thermal_work(): nctemp=30000
[   41.120000] rcar_thermal_work(): temp is now 30000C, update thermal zone
[   58.990000] rcar_thermal_work(): cctemp=30000
[   58.990000] rcar_thermal_work(): nctemp=30000
[   58.990000] rcar_thermal_work(): same temp, do not update thermal zone
[   59.290000] rcar_thermal_work(): cctemp=30000
[   59.290000] rcar_thermal_work(): nctemp=30000
[   59.290000] rcar_thermal_work(): same temp, do not update thermal zone
[   59.590000] rcar_thermal_work(): cctemp=30000
[   59.590000] rcar_thermal_work(): nctemp=30000
[   59.590000] rcar_thermal_work(): same temp, do not update thermal zone
[   59.890000] rcar_thermal_work(): cctemp=30000
[   59.890000] rcar_thermal_work(): nctemp=30000
[   59.890000] rcar_thermal_work(): same temp, do not update thermal zone
[   60.190000] rcar_thermal_work(): cctemp=30000
[   60.190000] rcar_thermal_work(): nctemp=30000
[   60.190000] rcar_thermal_work(): same temp, do not update thermal zone
[   60.490000] rcar_thermal_work(): cctemp=30000
[   60.490000] rcar_thermal_work(): nctemp=30000
[   60.490000] rcar_thermal_work(): same temp, do not update thermal zone
[   60.790000] rcar_thermal_work(): cctemp=30000
[   60.790000] rcar_thermal_work(): nctemp=35000
[   60.790000] rcar_thermal_work(): temp is now 35000C, update thermal zone

I suspect this may be due to sensor sampling accuracy / fluctuation,
but no formal proof.

Signed-off-by: Patrick Titiano <ptitiano@baylibre.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-04-08 09:01:39 +08:00
Patrick Titiano
206c0cba09 thermal: rcar-thermal: fix same mask applied twice
Mask is already applied preceding the if statement.
Remove the second mask.

Signed-off-by: Patrick Titiano <ptitiano@baylibre.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-04-08 09:01:39 +08:00
Jingoo Han
5204f8c0a7 thermal: ti-soc-thermal: Use SIMPLE_DEV_PM_OPS macro
Use SIMPLE_DEV_PM_OPS macro in order to make the code simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-04-08 09:01:38 +08:00
Anson Huang
749e8be71d thermal: imx: update formula for thermal sensor
Thermal sensor used to need two calibration points which are
in fuse map to get a slope for converting thermal sensor's raw
data to real temperature in degree C. Due to the chip calibration
limitation, hardware team provides an universal formula to get
real temperature from internal thermal sensor raw data:

Slope = 0.4297157 - (0.0015976 * 25C fuse);

Update the formula, as there will be no hot point calibration
data in fuse map from now on.

Signed-off-by: Anson Huang <b20788@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-04-08 09:01:37 +08:00
Linus Torvalds
467a9e1633 CPU hotplug notifiers registration fixes for 3.15-rc1
The purpose of this single series of commits from Srivatsa S Bhat (with
 a small piece from Gautham R Shenoy) touching multiple subsystems that use
 CPU hotplug notifiers is to provide a way to register them that will not
 lead to deadlocks with CPU online/offline operations as described in the
 changelog of commit 93ae4f978c (CPU hotplug: Provide lockless versions
 of callback registration functions).
 
 The first three commits in the series introduce the API and document it
 and the rest simply goes through the users of CPU hotplug notifiers and
 converts them to using the new method.
 
 /
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Merge tag 'cpu-hotplug-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull CPU hotplug notifiers registration fixes from Rafael Wysocki:
 "The purpose of this single series of commits from Srivatsa S Bhat
  (with a small piece from Gautham R Shenoy) touching multiple
  subsystems that use CPU hotplug notifiers is to provide a way to
  register them that will not lead to deadlocks with CPU online/offline
  operations as described in the changelog of commit 93ae4f978c ("CPU
  hotplug: Provide lockless versions of callback registration
  functions").

  The first three commits in the series introduce the API and document
  it and the rest simply goes through the users of CPU hotplug notifiers
  and converts them to using the new method"

* tag 'cpu-hotplug-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (52 commits)
  net/iucv/iucv.c: Fix CPU hotplug callback registration
  net/core/flow.c: Fix CPU hotplug callback registration
  mm, zswap: Fix CPU hotplug callback registration
  mm, vmstat: Fix CPU hotplug callback registration
  profile: Fix CPU hotplug callback registration
  trace, ring-buffer: Fix CPU hotplug callback registration
  xen, balloon: Fix CPU hotplug callback registration
  hwmon, via-cputemp: Fix CPU hotplug callback registration
  hwmon, coretemp: Fix CPU hotplug callback registration
  thermal, x86-pkg-temp: Fix CPU hotplug callback registration
  octeon, watchdog: Fix CPU hotplug callback registration
  oprofile, nmi-timer: Fix CPU hotplug callback registration
  intel-idle: Fix CPU hotplug callback registration
  clocksource, dummy-timer: Fix CPU hotplug callback registration
  drivers/base/topology.c: Fix CPU hotplug callback registration
  acpi-cpufreq: Fix CPU hotplug callback registration
  zsmalloc: Fix CPU hotplug callback registration
  scsi, fcoe: Fix CPU hotplug callback registration
  scsi, bnx2fc: Fix CPU hotplug callback registration
  scsi, bnx2i: Fix CPU hotplug callback registration
  ...
2014-04-07 14:55:46 -07:00
Linus Torvalds
cbda94e039 ARM: SoC: driver changes
These changes are mostly for ARM specific device drivers that either
 don't have an upstream maintainer, or that had the maintainer ask
 us to pick up the changes to avoid conflicts. A large chunk of this
 are clock drivers (bcm281xx, exynos, versatile, shmobile), aside from
 that, reset controllers for STi as well as a large rework of the
 Marvell Orion/EBU watchdog driver are notable.
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Merge tag 'drivers-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver changes from Arnd Bergmann:
 "These changes are mostly for ARM specific device drivers that either
  don't have an upstream maintainer, or that had the maintainer ask us
  to pick up the changes to avoid conflicts.

  A large chunk of this are clock drivers (bcm281xx, exynos, versatile,
  shmobile), aside from that, reset controllers for STi as well as a
  large rework of the Marvell Orion/EBU watchdog driver are notable"

* tag 'drivers-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (99 commits)
  Revert "dts: socfpga: Add DTS entry for adding the stmmac glue layer for stmmac."
  Revert "net: stmmac: Add SOCFPGA glue driver"
  ARM: shmobile: r8a7791: Fix SCIFA3-5 clocks
  ARM: STi: Add reset controller support to mach-sti Kconfig
  drivers: reset: stih416: add softreset controller
  drivers: reset: stih415: add softreset controller
  drivers: reset: Reset controller driver for STiH416
  drivers: reset: Reset controller driver for STiH415
  drivers: reset: STi SoC system configuration reset controller support
  dts: socfpga: Add sysmgr node so the gmac can use to reference
  dts: socfpga: Add support for SD/MMC on the SOCFPGA platform
  reset: Add optional resets and stubs
  ARM: shmobile: r7s72100: fix bus clock calculation
  Power: Reset: Generalize qnap-poweroff to work on Synology devices.
  dts: socfpga: Update clock entry to support multiple parents
  ARM: socfpga: Update socfpga_defconfig
  dts: socfpga: Add DTS entry for adding the stmmac glue layer for stmmac.
  net: stmmac: Add SOCFPGA glue driver
  watchdog: orion_wdt: Use %pa to print 'phys_addr_t'
  drivers: cci: Export CCI PMU revision
  ...
2014-04-05 15:37:40 -07:00
Srivatsa S. Bhat
cf0485a2ac thermal, x86-pkg-temp: Fix CPU hotplug callback registration
Subsystems that want to register CPU hotplug callbacks, as well as perform
initialization for the CPUs that are already online, often do it as shown
below:

	get_online_cpus();

	for_each_online_cpu(cpu)
		init_cpu(cpu);

	register_cpu_notifier(&foobar_cpu_notifier);

	put_online_cpus();

This is wrong, since it is prone to ABBA deadlocks involving the
cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently
with CPU hotplug operations).

Instead, the correct and race-free way of performing the callback
registration is:

	cpu_notifier_register_begin();

	for_each_online_cpu(cpu)
		init_cpu(cpu);

	/* Note the use of the double underscored version of the API */
	__register_cpu_notifier(&foobar_cpu_notifier);

	cpu_notifier_register_done();

Fix the thermal x86-pkg-temp code by using this latter form of callback
registration.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <eduardo.valentin@ti.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-20 13:43:47 +01:00
Zhang Rui
f2234bcd03 Thermal: thermal zone governor fix
This patch does a cleanup about the thermal zone govenor,
setting and make the following rule.
1. For thermal zone devices that are registered w/o tz->tzp,
   they can use the default thermal governor only.
2. For thermal zone devices w/ governor name specified in
   tz->tzp->governor_name, we will use the default govenor
   if the governor specified is not available at the moment,
   and update tz->governor when the matched governor is registered.

This also fixes a problem that OF registered thermal zones
are running with no governor.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Javi Merino <javi.merino@arm.com>
2014-03-03 23:15:57 +08:00
Ni Wade
5ca0cce562 Thermal: Allow first update of cooling device state
In initialization, if the cooling device is initialized at
max cooling state, and the thermal zone temperature is below
the first trip point, then the cooling state can't be updated
to the right state, untill the first trip point be triggered.

To fix this issue, allow first update of cooling device state
during registration, initialized "updated" device field as
"false" (instead of "true").

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-03 23:15:29 +08:00
Richard Weinberger
d1c8b0410b thermal,rcar_thermal: Add dependency on HAS_IOMEM
Commit beeb5a1e (thermal: rcar-thermal: Enable driver compilation with COMPILE_TEST)
broke build on archs wihout io memory.

On archs like S390 or um this driver cannot build nor work.
Make it depend on HAS_IOMEM to bypass build failures.

drivers/thermal/rcar_thermal.c:404: undefined reference to `devm_ioremap_resource'
drivers/thermal/rcar_thermal.c:426: undefined reference to `devm_ioremap_resource'

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-03 23:15:02 +08:00
Jean Delvare
3e4216531c x86_pkg_temp_thermal: Fix the thermal zone type
The thermal zone type should not include an instance number. Otherwise
each zone is considered a different type and the thermal-to-hwmon
bridge fails to group them all in a single hwmon device.

I also changed the type to "x86_pkg_temp", because "pkg" was too
generic, and other thermal drivers use an underscore, not a dash, as
a separator. Or maybe "cpu_pkg_temp" would be better?

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-03 23:13:37 +08:00
Jean Delvare
79786880a4 x86_pkg_temp_thermal: Do not expose as a hwmon device
The temperature value reported by x86_pkg_temp_thermal is already
reported by the coretemp driver. So, do not expose this thermal zone
as a hwmon device, because it would be redundant.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-03 23:13:24 +08:00
Zhang Rui
37d6a82bd9 Thermal: update INT3404 thermal driver help text
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-03-03 23:12:49 +08:00
Andrew Lunn
ff1f0018cf drivers: Enable building of Kirkwood drivers for mach-mvebu
With the move of kirkwood into mach-mvebu, drivers Kconfig need
tweeking to allow the kirkwood specific drivers to be built.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <cooloney@gmail.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-24 17:28:31 +00:00
Linus Torvalds
91466574be Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
 "This time, the biggest change is the work of representing hardware
  thermal properties in device tree infrastructure.

  This work includes the introduction of a device tree bindings for
  describing the hardware thermal behavior and limits, and also a parser
  to read and interpret the data, and build thermal zones and thermal
  binding parameters.  It also contains three examples on how to use the
  new representation on sensor devices, using three different drivers to
  accomplish it.  One driver is in thermal subsystem, the TI SoC
  thermal, and the other two drivers are in hwmon subsystem.

  Actually, this would be the first step of the complete work because we
  still need to check other potential drivers to be converted and then
  validate the proposed API.  But the reason why I include it in this
  pull request is that, first, this change does not hurt any others
  without using this approach, second, the principle and concept of this
  change would not break after converting the remaining drivers.  BTW,
  as you can see, there are several points in this change that do not
  belong to thermal subsystem.  Because it has been suggested by Guenter
  R that in such cases, it is recommended to send the complete series
  via one single subsystem.

  Specifics:

   - representing hardware thermal properties in device tree
     infrastructure

   - fix a regression that the imx thermal driver breaks system suspend.

   - introduce ACPI INT3403 thermal driver to retrieve temperature data
     from the INT3403 ACPI device object present on some systems.

   - introduce debug statement for thermal core and step_wise governor.

   - assorted fixes and cleanups for thermal core, cpu cooling, exynos
     thrmal, intel powerclamp and imx thermal driver"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (34 commits)
  thermal: remove const flag from .ops of imx thermal
  Thermal: update thermal zone device after setting emul_temp
  intel_powerclamp: Fix cstate counter detection.
  thermal: imx: add necessary clk operation
  Thermal cpu cooling: return error if no valid cpu frequency entry
  thermal: fix cpu_cooling max_level behavior
  thermal: rcar-thermal: Enable driver compilation with COMPILE_TEST
  thermal: debug: add debug statement for core and step_wise
  thermal: imx_thermal: add module device table
  drivers: thermal: Mark function as static in x86_pkg_temp_thermal.c
  thermal:samsung: fix compilation warning
  thermal: imx: correct suspend/resume flow
  thermal: exynos: fix error return code
  Thermal: ACPI INT3403 thermal driver
  MAINTAINERS: add thermal bindings entry in thermal domain
  arm: dts: make OMAP4460 bandgap node to belong to OCP
  arm: dts: make OMAP443x bandgap node to belong to OCP
  arm: dts: add cooling properties on omap5 cpu node
  arm: dts: add omap5 thermal data
  arm: dts: add omap5 CORE thermal data
  ...
2014-01-24 17:13:49 -08:00
Linus Torvalds
09da8dfa98 ACPI and power management updates for 3.14-rc1
- ACPI core changes to make it create a struct acpi_device object for every
    device represented in the ACPI tables during all namespace scans regardless
    of the current status of that device.  In accordance with this, ACPI hotplug
    operations will not delete those objects, unless the underlying ACPI tables
    go away.
 
  - On top of the above, new sysfs attribute for ACPI device objects allowing
    user space to check device status by triggering the execution of _STA for
    its ACPI object.  From Srinivas Pandruvada.
 
  - ACPI core hotplug changes reducing code duplication, integrating the
    PCI root hotplug with the core and reworking container hotplug.
 
  - ACPI core simplifications making it use ACPI_COMPANION() in the code
    "glueing" ACPI device objects to "physical" devices.
 
  - ACPICA update to upstream version 20131218.  This adds support for the
    DBG2 and PCCT tables to ACPICA, fixes some bugs and improves debug
    facilities.  From Bob Moore, Lv Zheng and Betty Dall.
 
  - Init code change to carry out the early ACPI initialization earlier.
    That should allow us to use ACPI during the timekeeping initialization
    and possibly to simplify the EFI initialization too.  From Chun-Yi Lee.
 
  - Clenups of the inclusions of ACPI headers in many places all over from
    Lv Zheng and Rashika Kheria (work in progress).
 
  - New helper for ACPI _DSM execution and rework of the code in drivers
    that uses _DSM to execute it via the new helper.  From Jiang Liu.
 
  - New Win8 OSI blacklist entries from Takashi Iwai.
 
  - Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun Guo,
    Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava, Rashika Kheria,
    Tang Chen, Zhang Rui.
 
  - intel_pstate driver updates, including proper Baytrail support, from
    Dirk Brandewie and intel_pstate documentation from Ramkumar Ramachandra.
 
  - Generic CPU boost ("turbo") support for cpufreq from Lukasz Majewski.
 
  - powernow-k6 cpufreq driver fixes from Mikulas Patocka.
 
  - cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark Brown.
 
  - Assorted cpufreq drivers fixes and cleanups from Anson Huang, John Tobias,
    Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh Kumar.
 
  - cpuidle cleanups from Bartlomiej Zolnierkiewicz.
 
  - Support for hibernation APM events from Bin Shi.
 
  - Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC disabled
    during thaw transitions from Bjørn Mork.
 
  - PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf Hansson.
 
  - PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente Kurusa,
    Rashika Kheria.
 
  - New tool for profiling system suspend from Todd E Brandt and a cpupower
    tool cleanup from One Thousand Gnomes.
 
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Merge tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael Wysocki:
 "As far as the number of commits goes, the top spot belongs to ACPI
  this time with cpufreq in the second position and a handful of PM
  core, PNP and cpuidle updates.  They are fixes and cleanups mostly, as
  usual, with a couple of new features in the mix.

  The most visible change is probably that we will create struct
  acpi_device objects (visible in sysfs) for all devices represented in
  the ACPI tables regardless of their status and there will be a new
  sysfs attribute under those objects allowing user space to check that
  status via _STA.

  Consequently, ACPI device eject or generally hot-removal will not
  delete those objects, unless the table containing the corresponding
  namespace nodes is unloaded, which is extremely rare.  Also ACPI
  container hotplug will be handled quite a bit differently and cpufreq
  will support CPU boost ("turbo") generically and not only in the
  acpi-cpufreq driver.

  Specifics:

   - ACPI core changes to make it create a struct acpi_device object for
     every device represented in the ACPI tables during all namespace
     scans regardless of the current status of that device.  In
     accordance with this, ACPI hotplug operations will not delete those
     objects, unless the underlying ACPI tables go away.

   - On top of the above, new sysfs attribute for ACPI device objects
     allowing user space to check device status by triggering the
     execution of _STA for its ACPI object.  From Srinivas Pandruvada.

   - ACPI core hotplug changes reducing code duplication, integrating
     the PCI root hotplug with the core and reworking container hotplug.

   - ACPI core simplifications making it use ACPI_COMPANION() in the
     code "glueing" ACPI device objects to "physical" devices.

   - ACPICA update to upstream version 20131218.  This adds support for
     the DBG2 and PCCT tables to ACPICA, fixes some bugs and improves
     debug facilities.  From Bob Moore, Lv Zheng and Betty Dall.

   - Init code change to carry out the early ACPI initialization
     earlier.  That should allow us to use ACPI during the timekeeping
     initialization and possibly to simplify the EFI initialization too.
     From Chun-Yi Lee.

   - Clenups of the inclusions of ACPI headers in many places all over
     from Lv Zheng and Rashika Kheria (work in progress).

   - New helper for ACPI _DSM execution and rework of the code in
     drivers that uses _DSM to execute it via the new helper.  From
     Jiang Liu.

   - New Win8 OSI blacklist entries from Takashi Iwai.

   - Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun
     Guo, Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava,
     Rashika Kheria, Tang Chen, Zhang Rui.

   - intel_pstate driver updates, including proper Baytrail support,
     from Dirk Brandewie and intel_pstate documentation from Ramkumar
     Ramachandra.

   - Generic CPU boost ("turbo") support for cpufreq from Lukasz
     Majewski.

   - powernow-k6 cpufreq driver fixes from Mikulas Patocka.

   - cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark
     Brown.

   - Assorted cpufreq drivers fixes and cleanups from Anson Huang, John
     Tobias, Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh
     Kumar.

   - cpuidle cleanups from Bartlomiej Zolnierkiewicz.

   - Support for hibernation APM events from Bin Shi.

   - Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC
     disabled during thaw transitions from Bjørn Mork.

   - PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf
     Hansson.

   - PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente
     Kurusa, Rashika Kheria.

   - New tool for profiling system suspend from Todd E Brandt and a
     cpupower tool cleanup from One Thousand Gnomes"

* tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (153 commits)
  thermal: exynos: boost: Automatic enable/disable of BOOST feature (at Exynos4412)
  cpufreq: exynos4x12: Change L0 driver data to CPUFREQ_BOOST_FREQ
  Documentation: cpufreq / boost: Update BOOST documentation
  cpufreq: exynos: Extend Exynos cpufreq driver to support boost
  cpufreq / boost: Kconfig: Support for software-managed BOOST
  acpi-cpufreq: Adjust the code to use the common boost attribute
  cpufreq: Add boost frequency support in core
  intel_pstate: Add trace point to report internal state.
  cpufreq: introduce cpufreq_generic_get() routine
  ARM: SA1100: Create dummy clk_get_rate() to avoid build failures
  cpufreq: stats: create sysfs entries when cpufreq_stats is a module
  cpufreq: stats: free table and remove sysfs entry in a single routine
  cpufreq: stats: remove hotplug notifiers
  cpufreq: stats: handle cpufreq_unregister_driver() and suspend/resume properly
  cpufreq: speedstep: remove unused speedstep_get_state
  platform: introduce OF style 'modalias' support for platform bus
  PM / tools: new tool for suspend/resume performance optimization
  ACPI: fix module autoloading for ACPI enumerated devices
  ACPI: add module autoloading support for ACPI enumerated devices
  ACPI: fix create_modalias() return value handling
  ...
2014-01-24 15:51:02 -08:00
Linus Torvalds
bb1281f2aa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree updates from Jiri Kosina:
 "Usual rocket science stuff from trivial.git"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
  neighbour.h: fix comment
  sched: Fix warning on make htmldocs caused by wait.h
  slab: struct kmem_cache is protected by slab_mutex
  doc: Fix typo in USB Gadget Documentation
  of/Kconfig: Spelling s/one/once/
  mkregtable: Fix sscanf handling
  lp5523, lp8501: comment improvements
  thermal: rcar: comment spelling
  treewide: fix comments and printk msgs
  IXP4xx: remove '1 &&' from a condition check in ixp4xx_restart()
  Documentation: update /proc/uptime field description
  Documentation: Fix size parameter for snprintf
  arm: fix comment header and macro name
  asm-generic: uaccess: Spelling s/a ny/any/
  mtd: onenand: fix comment header
  doc: driver-model/platform.txt: fix a typo
  drivers: fix typo in DEVTMPFS_MOUNT Kconfig help text
  doc: Fix typo (acces_process_vm -> access_process_vm)
  treewide: Fix typos in printk
  drivers/gpu/drm/qxl/Kconfig: reformat the help text
  ...
2014-01-22 21:21:55 -08:00
Lukasz Majewski
4f11b85a5f thermal: exynos: boost: Automatic enable/disable of BOOST feature (at Exynos4412)
This patch provides auto disable/enable operation for boost. It uses already
present thermal infrastructure to provide BOOST hysteresis.
The TMU data is modified to work properly with or without BOOST.
Hence, the two first trip points with corresponding clip frequencies are
adjusted.

The first one is reduced from 85 to 70 degrees and the clip frequency is
increased to 1.4 GHz from 800 MHz. This trip point is in fact responsible
for providing BOOST hysteresis. When temperature exceeds 70 deg, the maximal
non BOOST frequency for Exynos4412 is imposed.

Since the first trigger level has been "stolen" for BOOST, the second one
needs to be a compromise for the previously used two for non BOOST
configuration. The 95 deg with modified clip freq (to 400 MHz) should provide
a good balance between cooling down the overheated device and throughput on
an acceptable level.

Two last trigger levels are not modified since, they cause platform shutdown
on emergency overheat to happen.

The third trip point passage results in SW managed shut down of the system.
If the last trip point is crossed, the PMU HW generates the power off
signal.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
[rjw: Changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-17 02:00:45 +01:00
Peter Zijlstra
130816ce4d sched, thermal: Clean up preempt_enable_no_resched() abuse
The only valid use of preempt_enable_no_resched() is if the very next
line is schedule() or if we know preemption cannot actually be enabled
by that statement due to known more preempt_count 'refs'.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: rjw@rjwysocki.net
Cc: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Cc: rui.zhang@intel.com
Cc: jacob.jun.pan@linux.intel.com
Cc: Mike Galbraith <bitbucket@online.de>
Cc: hpa@zytor.com
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: lenb@kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-zcfvacdlvlr63qmnn5i58vuj@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-01-13 17:39:18 +01:00