This movement of files is done for easy maintenance and adding more
new sensor's support for exynos platform easily . This will also help in
bifurcating exynos common, sensor driver and sensor data related parts.
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
This is based on the initial imx thermal work done by
Rob Lee <rob.lee@linaro.org> (Not sure if the email address is still
valid). Since he is no longer interested in the work and I have
rewritten a significant amount of the code, I just took the authorship
over from him.
It adds the imx thermal support using Temperature Monitor (TEMPMON)
block found on some Freescale i.MX SoCs. The driver uses syscon regmap
interface to access TEMPMON control registers and calibration data, and
supports cpufreq as the cooling device.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Commit f1a18a105 "Thermal: CPU Package temperature thermal" had code
that did a get_online_cpus(), run a loop and then do a
put_online_cpus(). The problem is that the loop had an error exit that
would skip the put_online_cpus() part.
In the error exit part of the function, it also did a get_online_cpus(),
run a loop and then put_online_cpus(). The only way to get to the error
exit part is with get_online_cpus() already performed. If this error
condition is hit, the system will be prevented from taking CPUs offline.
The process taking the CPU offline will lock up hard.
Removing the get_online_cpus() removes the lockup as the hotplug CPU
refcount is back to zero.
This was bisected with ktest.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Although it is unlikley that physical package id is set to some
arbitary number, it is better to prevent in anycase. Since package
temp zones use this in thermal zone type and for allocation, added
a limit.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
If krealloc() returns NULL, it doesn't free the original. So any code
of the form 'foo = krealloc(foo, ...);' is almost certainly a bug.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
On systems with no package MSR support this caused crash as there
is a bug in the logic to check presence of DTHERM and PTS feature
together. Added a change so that when there is no PTS support, module
doesn't get loaded. Even if some CPU comes online with the PTS
feature disabled, and other CPUs has this support, this patch
will still prevent such MSR accesses.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reported-by: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Pull thermal management updates from Zhang Rui:
"There are not too many changes this time, except two new platform
thermal drivers, ti-soc-thermal driver and x86_pkg_temp_thermal
driver, and a couple of small fixes.
Highlights:
- move the ti-soc-thermal driver out of the staging tree to the
thermal tree.
- introduce the x86_pkg_temp_thermal driver. This driver registers
CPU digital temperature package level sensor as a thermal zone.
- small fixes/cleanups including removing redundant use of
platform_set_drvdata() and of_match_ptr for all platform thermal
drivers"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (34 commits)
thermal: cpu_cooling: fix stub function
thermal: ti-soc-thermal: use standard GPIO DT bindings
thermal: MAINTAINERS: Add git tree path for SoC specific updates
thermal: fix x86_pkg_temp_thermal.c build and Kconfig
Thermal: Documentation for x86 package temperature thermal driver
Thermal: CPU Package temperature thermal
thermal: consider emul_temperature while computing trend
thermal: ti-soc-thermal: add DT example for DRA752 chip
thermal: ti-soc-thermal: add dra752 chip to device table
thermal: ti-soc-thermal: add thermal data for DRA752 chips
thermal: ti-soc-thermal: remove usage of IS_ERR_OR_NULL
thermal: ti-soc-thermal: freeze FSM while computing trend
thermal: ti-soc-thermal: remove external heat while extrapolating hotspot
thermal: ti-soc-thermal: update DT reference for OMAP5430
x86, mcheck, therm_throt: Process package thresholds
thermal: cpu_cooling: fix 'descend' check in get_property()
Thermal: spear: Remove redundant use of of_match_ptr
Thermal: kirkwood: Remove redundant use of of_match_ptr
Thermal: dove: Remove redundant use of of_match_ptr
Thermal: armada: Remove redundant use of of_match_ptr
...
This change updates the ti-soc-thermal driver to use
standard GPIO DT bindings to read the GPIO number associated
to thermal shutdown IRQ, in case the device features it.
Previously, the code was using a specific DT bindings.
As now OMAP supports the standard way to model GPIOs,
there is no point in having a ti specific binding.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
EXYNOS4212 and EXYNOS4412 have the same thermal block, so there is no
reason to include support only for EXYNOS4412 in this driver.
Cc: linux-pm@vger.kernel.org
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Fix build error in x86_pkg_temp_thermal.c. It requires that
X86_MCE & X86_THERMAL_VECTOR be enabled, so depend on the latter symbol,
since it depends on X86_MCE (indirectly).
Also, X86_PKG_TEMP_THERMAL is already inside an "if THERMAL" block,
so remove that duplicated dependency.
ERROR: "platform_thermal_package_rate_control" [drivers/thermal/x86_pkg_temp_thermal.ko] undefined!
ERROR: "platform_thermal_package_notify" [drivers/thermal/x86_pkg_temp_thermal.ko] undefined!
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This driver register CPU digital temperature sensor as a thermal
zone at package level.
Each package will show up as one zone with at max two trip points.
These trip points can be both read and updated. Once a non zero
value is set in the trip point, if the package package temperature
goes above or below this setting, a thermal notification is
generated.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
In case emulated temperature is in use, using the trend
provided by driver layer can lead to bogus situation.
In this case, debugger user would set a temperature value,
but the trend would be from driver computation.
To avoid this situation, this patch changes the get_tz_trend()
to consider the emulated temperature whenever that is in use.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Amit Daniel Kachhap <amit.daniel@samsung.com>
Cc: Durgadoss R <durgadoss.r@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch adds the thermal data for TI DRA752 chips.
In this change it includes (autogen):
. Register offset definitions
. Bitfields and masks for all registers
. Conversion table
Also, the thermal limits, thresholds and extrapolation
rules are included. The extrapolation rule is simply
add +2C as margin.
All 5 sensors, MPU, GPU, CORE, DSPEVE and IVA, are defined
and exposed. Only MPU has cooling device.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch changes the driver to avoid the usage of IS_ERR_OR_NULL()
macro. This macro can lead to dangerous results, like returning
success (0) during a failure scenario (NULL pointer handling).
For this reason this patch is changing the driver after
revisiting the code. These are the cases:
i. For cases in which IS_ERR_OR_NULL() is used for checking
return values of functions that returns either PTR_ERR()
or a valid pointer, it has been translated to IS_ERR() check only.
ii. For cases that a NULL check is still needed, it has been
translated to if (!ptr || IS_ERR(ptr)).
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
In order to read the history buffer, it is required to
freeze BG FSM. This patch adds the missing piece of code
to freeze the FSM and also a contention area to avoid
other parts of the code to access the DTEMPs.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
For boards that provide a PCB sensor close to SoC junction
temperature, it is possible to remove the cumulative heat
reported by the SoC temperature sensor.
This patch changes the extrapolation computation to consider
an external sensor in the extrapolation equations.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The variable 'descend' is initialized as -1 in function get_property(),
and will never get any chance to be updated by the following code.
if (freq != CPUFREQ_ENTRY_INVALID && descend != -1)
descend = !!(freq > table[i].frequency);
This makes function get_property() return the wrong frequency for given
cooling level if the frequency table is sorted in ascending. Fix it
by correcting the 'descend' check in if-condition to 'descend == -1'.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
'spear_thermal_id_table' is always compiled in and the driver
is dependent on OF. Hence use of of_match_ptr is unnecessary.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Vincenzo Frascino <vincenzo.frascino@st.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
'kirkwood_thermal_id_table' is always compiled in and the driver
is dependent on OF. Hence use of of_match_ptr is unnecessary.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
'dove_thermal_id_table' is always compiled in and the driver
is dependent on OF. Hence use of of_match_ptr is unnecessary.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
'armada_thermal_id_table' is always compiled in and the driver
is dependent on OF. Hence use of of_match_ptr is unnecessary.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
devm_ioremap_resource does sanity checks on the given resource.
No need to duplicate this in the driver.
CC: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
CC: Vincenzo Frascino <vincenzo.frascino@st.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
This patch adds a requirement needing .get_trip_temp() callback
function for registering thermal zone device. This function is
used when thermal zone is updated and essential where thermal core
handles thermal trip based only polling way not hw interrupt.
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Setting policy results in invalid value error.
% echo "step_wise" > policy
% echo: write error: Invalid argument
Need clean up of the buffer which "echo" may add based on the arguments, before
comparing aganist list of governor names.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reported-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Tested-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Use the newly introduced devm_ioremap_resource().
devm_ioremap_resource() provides its own error messages; so all explicit
error messages can be removed from the failure code paths.
CC: Vincenzo Frascino <vincenzo.frascino@st.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Vincenzo Frascino <vincenzo.frascino@st.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch changes the driver to avoid the usage of IS_ERR_OR_NULL()
macro. This macro can lead to dangerous results, like returning
success (0) during a failure scenario (NULL pointer handling).
The case present in this driver can be translated to a simple
check for IS_ERR(), as the cpufreq_cooling_register() returns
either a valid pointer or an ERR_PTR().
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Hongbo Zhang <hongbo.zhang@stericsson.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch changes the driver to avoid the usage of IS_ERR_OR_NULL()
macro. This macro can lead to dangerous results, like returning
success (0) during a failure scenario (NULL pointer handling).
The case present in this patch has simply be translated to
normal check for NULL and if the pointer has an error code.
The later case is needed because functions like
thermal_zone_get_zone_by_name() could return an ERR_PTR().
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Improve code readiness by changing alignments so that
they match open parenthesis, like checkpatch.pl --strict
suggests.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
There are at least three patterns for oneline comments in this
file. This patch changes them to one single pattern
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Just for code readiness, this patch makes all functions
on this file to have a blank line before their returns.
Now, some functions follow this pattern, and others will
not have a blank line. So, this patch makes it a single
pattern.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch updates the documentation for thermal_zone_device_register
and removes the warnings generated by scripts/kernel-doc -v.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch updates the documentation for create_trip_attrs
and removes the warnings generated by scripts/kernel-doc -v.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch updates the documentation for thermal_cooling_device_register
and removes the warnings generated by scripts/kernel-doc -v.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch updates the documentation for thermal_zone_unbind_cooling_device
and removes the warnings generated by scripts/kernel-doc -v.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch updates the documentation for thermal_zone_bind_cooling_device
and removes the warnings generated by scripts/kernel-doc -v.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
To follow the prefix names used by the thermal functions,
this patch renames notify_thermal_framework to thermal_notify_framework.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
As per the comment at the top of this file, this is a GPLv2 driver.
This patch updates the driver license accordingly.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The list is not needed so far. Thus removing it.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Just for style purposes, remove extra curl brackets.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Limit the amount of bytes written to dev_name by
secure writing with snprintf.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Update comments for this exported function.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Add proper documentation for exported function cpufreq_cooling_register.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
There is no support for hotplug or any other means of reducing
temperature. So, this patch removes these references from Kconfig.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Update kernel-doc comment and documentation for cpufreq_thermal_notifier.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Add documentation for cpufreq_get_cooling_level. As this
is an exported function, it has to be documented.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
As this is one of the central functions of this file,
it deserves a proper documentation. This patch improves
the existing comment to format it as a kernel-doc style.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Update documentation for is_cpufreq_valid function so
that kernel-doc does not complain about return value.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
level will be used only if GET_FREQ mode is requested.
There is no potential harm with current code. But for
cleaning the compilation log, this patch initializes
level to zero.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Restrict the usage to GPL modules.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Simple fixes for making kernel_doc happy about
struct cpufreq_cooling_device. Includes also a minor
spelling fix.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
clk_{un}prepare APIs are required to migrate to common
clock framework. While at it convert to use devm_clk_get as
it removes some cleanup code.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Amit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This code doesn't work on big endian systems because we're storing low
values in the high bits of the unsigned long. It makes it a very high
value instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch exports the thermal_zone_get_temp API so that driver
writers can fetch temperature of thermal zones managed by other
drivers.
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch adds a helper function to get a reference of
a thermal zone, based on the zone type name.
It will perform a zone name lookup and return a reference
to a thermal zone device that matches the name requested.
In case the zone is not found or when several zones match
same name or if the required parameters are invalid, it will return
the corresponding error code (ERR_PTR).
Cc: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The thermal governors are part of the thermal framework,
rather than a seperate feature/module.
Because the generic thermal layer can not work without
thermal governors, and it must load the thermal governors
during its initialization.
Build them into one module in this patch.
This also fix a problem that the generic thermal layer does not
work when CONFIG_THERMAL=m and CONFIG_THERMAL_GOV_XXX=y.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
this is the preparation work to build all the thermal core framework
source file, like governors, cpu cooling, etc, into one module.
No functional change in this patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
In multiplatform configurations, we cannot include headers
provided by only the exynos platform. Fortunately a number
of drivers that include those headers do not actually need
them, so we can just remove the inclusions.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-pm@vger.kernel.org
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
When selecting a target cooling state in get_target_state(), make sure
that the state is at least as high as the minimum when the temperature
is rising and at least as low as the maximum when the temperature is
falling. This is necessary because, in the THREAML_TREND_RAISING and
THERMAL_TREND_DROPPING cases, the current state may only be incremented
or decremented by one even if it is outside the bounds of the thermal
instance. This might occur, for example, if the CPU is heating up
and hits a thermal trip point for the first time when it's frequency
is much higher than the range specified by the thermal instance
corresponding to the trip point.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Because this feature is for debuging purposes, it is highly
recommended to do not enable this on production systems.
This patch adds warnings for system integrators, so that
people are aware of this potential security issue.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This removes the driver specific sysfs support of the temperature
emulation and uses the newly added core thermal framework for thermal
emulation. An exynos platform specific handler is added to support this.
In this patch, the exynos senor(tmu) related code and exynos framework
related (thermal zone, cooling devices) code are intentionally kept separate.
So an emulated function pointer is passed from sensor to framework. This is
beneficial in adding more sensor support using the same framework code
which is an ongoing work. The goal is to finally split them totally. Even
the existing read_temperature also follows the same execution method.
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Current rcar_thermal() didn't care about own power.
Without this patch, rcar_thermal doesn't work on APE6 board
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Current rcar_thermal driver didn't care about rcar_theraml_irq_disable()
when registration failure case on _probe(), and _remove().
And, it returns without unregistering thermal zone when
registration failure case on _probe().
This patch fixes these issue.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This driver supports both Armada 370 and Armada XP SoC
thermal management controllers.
Armada 370 has a register to check a valid temperature, whereas
Armada XP does not. Each has a different initialization (i.e. calibration)
function. The temperature conversion formula is the same for both.
The controller present in each SoC have a very similar feature set,
so it corresponds to have one driver to support both of them.
Although this driver may present similarities to Dove and Kirkwood
thermal driver, the exact differences and coincidences are not fully
known. For this reason, support is given through a separate driver.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The currently formula has been taken from the 88AP510 SoC datasheet,
which is not exactly correct. The correct value for the temperature
in Celcius of the sensor present in this SoC is:
Celsius = (322-reg)/1.3625
Signed-off-by: Lior Amsalem <alior@marvell.com>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The currently formula has been taken from the 88AP510 SoC datasheet,
which is not exactly correct. The correct value for the temperature
in Celcius of the sensor present in this SoC is:
Celsius = (322-reg)/1.3625
Signed-off-by: Lior Amsalem <alior@marvell.com>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The correct value is obtain by first shifting the register by the offset,
later applying the valid mask and finally invert the result.
This check was lacking an extra parenthesis to be strictly correct.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
thermal_zone_device_register() returns ERR_PTR on error, thus use
IS_ERR rather than IS_ERR_OR_NULL to check return value.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
cpufreq cooling uses different frequencies as different cooling states.
But the per_cpu cpufreq_frequency_table may contain duplicate,
invalid entries, and it may be in either ascending or descending order.
And currently, code for parsing the per_cpu cpufreq_frequency_table
is used in several places and inconsistent.
Now introduce new code to
1. get the maximum cooling states
2. translate cooling state to cpu frequency
3. translate cpu frequency to cooling state
in one place,
with the correct logic of handling per_cpu cpufreq_frequency_table.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Amit Daniel kachhap <amit.daniel@samsung.com>
we are returning EINVAL while the thermal_zone_device_register function fail.
instead we can use the return value from the thermal_zone_device_register by
using PTR_ERR.
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
thermal_zone_device_register returns a value contained in the pointer itself
use PTR_ERR to obtain the address and return it at the end.
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Use the newly introduced devm_ioremap_resource() instead of
devm_request_and_ioremap() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages; so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Use the newly introduced devm_ioremap_resource() instead of
devm_request_and_ioremap() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages; so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Use the newly introduced devm_ioremap_resource() instead of
devm_request_and_ioremap() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages; so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Add the missing unlock before return from function rcar_thermal_update_temp()
in the error handling case.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The new intel_powerclamp thermal cooling device driver was merged in
commit 2af78448ff (Pull thermal management updates from Zhang Rui)
without any data conflicts. But there was a more subtle conflict I
missed: the driver uses MAX_USER_RT_PRIO, but commit 8bd75c77b7
("sched/rt: Move rt specific bits into new header file") had moved that
define from <linux/sched.h> to <linux/sched/rt.h>.
Which caused this build failure:
drivers/thermal/intel_powerclamp.c: In function ‘clamp_thread’:
drivers/thermal/intel_powerclamp.c:360:21: error: ‘MAX_USER_RT_PRIO’ undeclared (first use in this function)
drivers/thermal/intel_powerclamp.c:360:21: note: each undeclared identifier is reported only once for each function it appears in
And because I don't do a full "make allmodconfig" build after each pull,
I didn't notice until too late. So now the fix is here, separately from
the merge commit.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull thermal management updates from Zhang Rui:
"Highlights:
- introduction of Dove thermal sensor driver.
- introduction of Kirkwood thermal sensor driver.
- introduction of intel_powerclamp thermal cooling device driver.
- add interrupt and DT support for rcar thermal driver.
- add thermal emulation support which allows platform thermal driver
to do software/hardware emulation for thermal issues."
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (36 commits)
thermal: rcar: remove __devinitconst
thermal: return an error on failure to register thermal class
Thermal: rename thermal governor Kconfig option to avoid generic naming
thermal: exynos: Use the new thermal trend type for quick cooling action.
Thermal: exynos: Add support for temperature falling interrupt.
Thermal: Dove: Add Themal sensor support for Dove.
thermal: Add support for the thermal sensor on Kirkwood SoCs
thermal: rcar: add Device Tree support
thermal: rcar: remove machine_power_off() from rcar_thermal_notify()
thermal: rcar: add interrupt support
thermal: rcar: add read/write functions for common/priv data
thermal: rcar: multi channel support
thermal: rcar: use mutex lock instead of spin lock
thermal: rcar: enable CPCTL to use hardware TSC deciding
thermal: rcar: use parenthesis on macro
Thermal: fix a build warning when CONFIG_THERMAL_EMULATION cleared
Thermal: fix a wrong comment
thermal: sysfs: Add a new sysfs node emul_temp for thermal emulation
PM: intel_powerclamp: off by one in start_power_clamp()
thermal: exynos: Miscellaneous fixes to support falling threshold interrupt
...
Convert to the much saner new idr interface.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
commit 76cc18874 "thermal: rcar: add Device Tree support"
added device tree support for this driver, but also added
an instance of __devinitconst, which is no longer defined
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Zhang Rui <rui.zhang@intel.com>
The return code from the registration of the thermal class is used to
unallocate resources, but this failure isn't passed back to the caller of
thermal_init. Return this failure back to the caller.
This bug was introduced in changeset 4cb18728 which overwrote the return code
when the variable was re-used to catch the return code of the registration of
the genetlink thermal socket family.
Signed-off-by: Richard Guy Briggs <rbriggs@redhat.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Currently, we have three Kconfig options for thermal governors, aka,
CONFIG_FAIR_SHARE, CONFIG_USER_SPACE and CONFIG_STEP_WISE.
But these names are too generic that may bring confusion to users.
Rename them to CONFIG_THERMAL_GOV_FAIR_SHARE,
CONFIG_THERMAL_GOV_USER_SPACE, CONFIG_THERMAL_GOV_STEP_WISE
to avoid the generic naming.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch uses the quick thermal cooling trend type macros. This is needed
as exynos5 and other thermal sensors now supports only interrupt method for
thresold temperature check.
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch introduces using temperature falling interrupt in exynos
thermal driver. Former patch, it only use polling way to check
whether if system themperature is fallen. However, exynos SOC also
provides temperature falling interrupt way to do same things by hw.
This feature is not supported in exynos4210.
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
The Marvell Dove SoC has a thermal sensor. Add a driver using the
thermal framework.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch adds support for Kirkwood 88F6282 and 88F6283 thermal sensor.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Support for loading the Renesas R-Car thermal module via devicetree.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Machine/System power-off is run in thermal frame work if
it become critical temperature.
This patch removed pointless machine_power_off()
from thermal_zone_device_ops :: .notify
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch adds interrupt support for R-Car thermal driver.
New generation R-Car thermal sensor interrupt controller was
different from old generation.
This patch supports new generation sensor only,
since the old generation interrupt controller had never been used before,
and will never be used in the future.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
R-Car thermal driver will use struct common in next
feature (interrupt support).
But the register address is different between struct priv and common.
This patch adds read/write functions for struct common,
and use macro technique to avoid wrong register access.
This is preparation patch for next feature (interrupt support),
therefore, there is no user to use this common read/write
function at this point.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
R-Car thermal sensor will be multi channel sensor in next generation.
But "IRQ controlling method" and "register mapping" are
different between old/new chip.
This patch adds multi sensor support.
Then, this driver assumes there is common register
if platform has IRQ resource.
The IRQ will be supported soon.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Current R-Car thermal driver is using spin lock for each
registers read/write, but it is pointless lock.
This lock is required while reading temperature,
but it needs long wait (= 300ms).
So, this patch used mutex lock while reading temperature,
instead of spin lock for each registers.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
If CPCTL was 1 on R-Car thermal, the thermal comparator offset
is automatically decided by hardware.
And this CPCTL is the conditions which validate interrupt.
This patch enabled CPCTL.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
"level" parameter of get_cpu_frequency equals cooling state
of cpu cooling device, and it starts from 0.
Fix the misleading comment.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch adds support to set the emulated temperature method in
thermal zone (sensor). After setting this feature thermal zone may
report this temperature and not the actual temperature. The emulation
implementation may be based on sensor capability through platform
specific handler or pure software emulation if no platform handler defined.
This is useful in debugging different temperature threshold and its
associated cooling action. Critical threshold's cannot be emulated.
Writing 0 on this node should disable emulation.
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This value has already been clamped correctly to 0 through 49 in
powerclamp_set_cur_state() so this patch doesn't actually change
anything. But we should fix it anyway for consistency.
set_target_ratio is used as an offset into an array with
MAX_TARGET_RATIO (50) elements.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Below fixes are done to support falling threshold interrupt,
* Falling interrupt status macro corrected according to exynos5 data sheet.
* The get trend function modified to calculate trip temperature correctly.
* The clearing of interrupt status in the isr is now done after handling
the event that caused the interrupt.
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Intel PowerClamp driver performs synchronized idle injection across
all online CPUs. The goal is to maintain a given package level C-state
ratio.
Compared to other throttling methods already exist in the kernel,
such as ACPI PAD (taking CPUs offline) and clock modulation, this is often
more efficient in terms of performance per watt.
Please refer to Documentation/thermal/intel_powerclamp.txt for more details.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds an extra check in the data structure while registering
a thermal device. The check is to avoid registering zones with a number
of trips greater than zero, but with no .get_trip_temp nor .get_trip_type
callbacks. Receiving such data structure may end in wrong data access.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
No need for spinlocks in this file, then removing its header.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch changes the function thermal_generate_netlink_event
to receive a thermal zone device instead of a originator id.
This way, the messages will always be bound to a thermal zone.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This eliminates having an #ifdef returning NULL for the case
when OF is disabled.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Hongbo Zhang <hongbo.zhang@stericsson.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This eliminates having an #ifdef returning NULL for the case
when OF is disabled.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Hongbo Zhang <hongbo.zhang@stericsson.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This eliminates having an #ifdef returning NULL for the case
when OF is disabled.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
devm_clk_get allocates a resource that is released when a driver detaches.
This patch uses devm_clk_get for data that is allocated in the probe
function of a platform device and is only released in the remove function.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch adds .get_trip_type(), .get_trip_temp(), and .notify()
on rcar_thermal_zone_ops.
Driver will try platform power OFF if it reached to
critical temperature.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This patch supports exynos's emulation mode with newly created sysfs node.
Exynos 4x12 (4212, 4412) and 5 series provide emulation mode for thermal
management unit. Thermal emulation mode supports software debug for TMU's
operation. User can set temperature manually with software code and TMU
will read current temperature from user value not from sensor's value.
This patch includes also documentary placed under Documentation/thermal/.
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
step_wise governor should set the device cooling state to
upper/lower limit directly when THERMAL_TREND_RAISE/DROP_FULL.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
CONFIG_HOTPLUG is going away as an option. As a result, the __dev*
markings need to be removed.
This change removes the use of __devinit, __devexit_p, __devinitdata,
and __devexit from these drivers.
Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.
Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
