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path: root/drivers/thermal/db8500_cpufreq_cooling.c
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2015-09-13thermal: db8500_cpufreq_cooling: Fix module autoload for OF platform driverLuis de Bethencourt
This platform driver has a OF device ID table but the OF module alias information is not created so module autoloading won't work. Signed-off-by: Luis de Bethencourt <luis@debethencourt.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-12-21Merge branch 'fixes' of ↵Zhang Rui
git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into thermal-soc
2014-12-12thermal: db8500: Do not print error message in the EPROBE_DEFER caseEduardo Valentin
Avoid printing the error message in the EPROBE_DEFER case where registering cpu cooling at db8500 thermal driver. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: devicetree@vger.kernel.org Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-12-08thermal: db8500: pass cpu_present_mask to cpufreq_cooling_register()Viresh Kumar
cpufreq_cooling_register() expects mask of all the CPUs where frequency constraint is applicable. This platform has more than one CPU to which these constraints will apply and so passing mask of only CPU0 wouldn't be sufficient. Also, this platform has a single cluster of CPUs and the constraint applies to all CPUs. If CPU0 is hoplugged out then we may face strange BUGs as cpu_cooling framework isn't aware of any siblings sharing clock line. Fix it by passing cpu_present_mask to cpufreq_cooling_register(). Cc: Hongbo Zhang <hongbo.zhang@linaro.com> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-12-08thermal: cpu_cooling: check for the readiness of cpufreq layerEduardo Valentin
In this patch, the cpu_cooling code checks for the usability of cpufreq layer before proceeding with the CPU cooling device registration. The main reason is: CPU cooling device is not usable if cpufreq cannot switch frequencies. Similar checks are spread in thermal drivers. Thus, the advantage now is to have the check in a single place: cpu cooling device registration. For this reason, this patch also updates the existing drivers that depend on CPU cooling to simply propagate the error code of the cpu cooling registration call. Therefore, in case cpufreq is not ready, the thermal drivers will still return -EPROBE_DEFER, in an attempt to try again when cpufreq layer gets ready. Cc: devicetree@vger.kernel.org Cc: Grant Likely <grant.likely@linaro.org> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: linux-samsung-soc@vger.kernel.org Cc: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Zhang Rui <rui.zhang@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-10-20thermal: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-04-27thermal: db8500_cpufreq_cooling: remove usage of IS_ERR_OR_NULL()Eduardo Valentin
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>
2013-01-04thermal: db8500: Use of_match_ptr() macro in db8500_cpufreq_cooling.cSachin Kamat
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>
2012-11-15Thermal: Add ST-Ericsson DB8500 thermal driver.hongbo.zhang
This driver is based on the thermal management framework in thermal_sys.c. A thermal zone device is created with the trip points to which cooling devices can be bound, the current cooling device is cpufreq, e.g. CPU frequency is clipped down to cool the CPU, and other cooling devices can be added and bound to the trip points dynamically. The platform specific PRCMU interrupts are used to active thermal update when trip points are reached. Signed-off-by: hongbo.zhang <hongbo.zhang@linaro.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Francesco Lavra <francescolavra.fl@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>