mirror of
https://github.com/a52xq-dev/kernel.git
synced 2026-10-18 21:58:11 +07:00
| SHA1 | ||
|---|---|---|
* this imports the latest version of SM-A526B kernel from https://opensource.samsung.com/uploadSearch?searchValue=SM-A526B |
34794f4cb2
|
|
Allow platform drivers to register with CPU cooling with their frequency mitigation functions. This allows the platform drivers to provide the callbacks to get the current ceil limit and to set the floor and ceil limits for the cpu. Change-Id: I47960b002bf1bce1cd588de2892de46793a95562 Signed-off-by: Lina Iyer <ilina@codeaurora.org> (cherry picked from commit 986fde1710c194bede83bf62eb542e6f05af3886) Signed-off-by: Mark Salyzyn <salyzyn@google.com> Bug: 154153737 
Lina Iyer
authored and
 Mark Salyzyn
commited |
e92e4035e0 | |
No one has used it for the last two and half years (since it was
introduced by commit
Viresh Kumar
authored and
 Rafael J. Wysocki
commited |
84fe2cab48 | |
of_cpufreq_cooling_register() isn't used by anyone and so can be removed, but then we would be left with two routines: cpufreq_cooling_register() and of_cpufreq_power_cooling_register() that would look odd. Remove current implementation of of_cpufreq_cooling_register() and rename of_cpufreq_power_cooling_register() as of_cpufreq_cooling_register(). This simplifies lots of stuff. Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Viresh Kumar
authored and
Rafael J. Wysocki
commited |
3ebb62ffc4 | |
It isn't used by anyone, drop it. Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Viresh Kumar
authored and
Rafael J. Wysocki
commited |
ba0966da20 | |
All the callers of of_cpufreq_power_cooling_register() have almost identical code and it makes more sense to move that code into the helper as its all about reading DT properties. This got rid of lot of redundant code. Acked-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Viresh Kumar
authored and
Rafael J. Wysocki
commited |
f5f263fed6 | |
The CPU cooling driver uses the cpufreq policy, to get clip_cpus, the frequency table, etc. Most of the callers of CPU cooling driver's registration routines have the cpufreq policy with them, but they only pass the policy->related_cpus cpumask. The __cpufreq_cooling_register() routine then gets the policy by itself and uses it. It would be much better if the callers can pass the policy instead directly. This also fixes a basic design flaw, where the policy can be freed while the CPU cooling driver is still active. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Tested-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Viresh Kumar
authored and
 Eduardo Valentin
commited |
4d753aa7b6 | |
There is only one user of cpufreq_cooling_get_level() and that already has pointer to the cpufreq_cdev structure. It can directly call get_level() instead and we can get rid of cpufreq_cooling_get_level(). Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Tested-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Viresh Kumar
authored and
Eduardo Valentin
commited |
3e08b2df12 | |
Add a basic power model to the cpu cooling device to implement the power cooling device API. The power model uses the current frequency, current load and OPPs for the power calculations. The cpus must have registered their OPPs using the OPP library. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kapileshwar Singh <kapileshwar.singh@arm.com> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> 
Javi Merino
authored and
Eduardo Valentin
commited |
c36cf07176 | |
The documentation of of_cpufreq_cooling_register() and cpufreq_cooling_register() say that they return ERR_PTR() on error. Accordingly, callers only check for IS_ERR(). Therefore, make them return ERR_PTR(-ENOSYS) as is customary in the kernel when config options are missing. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Javi Merino
authored and
Eduardo Valentin
commited |
503ccc3fec | |
This patch introduces an API to register cpufreq cooling device based on device tree node. The registration via device tree node differs from normal registration due to the fact that it is needed to fill the device_node structure in order to be able to match the cooling devices with trip points. 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> 
Eduardo Valentin
commited |
39d99cff76 | |
The function stub for cpufreq_cooling_get_level introduced
in
Arnd Bergmann
authored and
Eduardo Valentin
commited |
e8d39240d6 | |
To improve code readiness, change the way the lines are broken in this file. Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Eduardo Valentin
authored and
 Zhang Rui
commited |
d44ada5162 | |
Remove defines that are not in used. 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>
Eduardo Valentin
authored and
Zhang Rui
commited |
e44dec77be | |
Update header list for cpu_cooling.h. Missing definition of cpumask. 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>
Eduardo Valentin
authored and
Zhang Rui
commited |
198f38f7fb | |
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>
Zhang Rui
commited |
bbf7fc88c7 | |
Signed-off-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Amit Daniel kachhap <amit.daniel@samsung.com>
Zhang Rui
commited |
57df810693 | |
As thermal drivers can be built as modules and also the thermal framework itself, building cpu cooling only as built-in can cause linking errors. For instance: * Generic Thermal sysfs driver * Generic Thermal sysfs driver (THERMAL) [M/n/y/?] m generic cpu cooling support (CPU_THERMAL) [N/y/?] (NEW) y with the following drive: CONFIG_OMAP_BANDGAP=m generates: ERROR: "cpufreq_cooling_unregister" [drivers/staging/omap-thermal/omap-thermal.ko] undefined! ERROR: "cpufreq_cooling_register" [drivers/staging/omap-thermal/omap-thermal.ko] undefined! This patch changes cpu cooling driver to allow it to be built as module. Reported-by: Enric Balletbo i Serra <eballetbo@gmail.com> 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>
Eduardo Valentin
authored and
Zhang Rui
commited |
4ba115b1e1 | |
There are predefined cpu_masks that are const data structures. This patch changes the cpu cooling register function so that those const cpu_masks can be used, without compilation warnings. include/linux/cpumask.h * The following particular system cpumasks and operations manage * possible, present, active and online cpus. * * cpu_possible_mask- has bit 'cpu' set iff cpu is populatable * cpu_present_mask - has bit 'cpu' set iff cpu is populated * cpu_online_mask - has bit 'cpu' set iff cpu available to scheduler * cpu_active_mask - has bit 'cpu' set iff cpu available to migration * Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Eduardo Valentin
authored and
Zhang Rui
commited |
3778ff5c70 | |
This patchset introduces a new generic cooling device based on cpufreq
that can be used on non-ACPI platforms. As a proof of concept, we have
drivers for the following platforms using this mechanism now:
* Samsung Exynos (Exynos4 and Exynos5) in the current patchset.
* Freescale i.MX (git://git.linaro.org/people/amitdanielk/linux.git imx6q_thermal)
There is a small change in cpufreq cooling registration APIs, so a minor
change is needed for Freescale platforms.
Brief Description:
1) The generic cooling devices code is placed inside driver/thermal/*
as placing inside acpi folder will need un-necessary enabling of acpi
code. This code is architecture independent.
2) This patchset adds generic cpu cooling low level implementation
through frequency clipping. In future, other cpu related cooling
devices may be added here. An ACPI version of this already exists
(drivers/acpi/processor_thermal.c) .But this will be useful for
platforms like ARM using the generic thermal interface along with the
generic cpu cooling devices. The cooling device registration API's
return cooling device pointers which can be easily binded with the
thermal zone trip points. The important APIs exposed are,
a) struct thermal_cooling_device *cpufreq_cooling_register(
struct cpumask *clip_cpus)
b) void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
3) Samsung exynos platform thermal implementation is done using the
generic cpu cooling APIs and the new trip type. The temperature sensor
driver present in the hwmon folder(registered as hwmon driver) is moved
to thermal folder and registered as a thermal driver.
A simple data/control flow diagrams is shown below,
Core Linux thermal <-----> Exynos thermal interface <----- Temperature Sensor
| |
\|/ |
Cpufreq cooling device <---------------
TODO:
*Will send the DT enablement patches later after the driver is merged.
This patch:
Add support for generic cpu thermal cooling low level implementations
using frequency scaling up/down based on the registration parameters.
Different cpu related cooling devices can be registered by the user and
the binding of these cooling devices to the corresponding trip points can
be easily done as the registration APIs return the cooling device pointer.
The user of these APIs are responsible for passing clipping frequency .
The drivers can also register to recieve notification about any cooling
action called.
[akpm@linux-foundation.org: fix comment layout]
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: SangWook Ju <sw.ju@samsung.com>
Cc: Durgadoss <durgadoss.r@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Kyungmin Park <kmpark@infradead.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Amit Daniel Kachhap
authored and
Zhang Rui
commited |
0236141837 |