linux-toradex.git/include/linux/thermal.h, branch v6.1-rc1

thermal/of: Remove the thermal_zone_of_get_sensor_id() function

2022-10-04T09:21:06+00:00

The function thermal_zone_of_get_sensor_id() is no longer used
anywhere, remove it.

Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20220818082316.2717095-2-daniel.lezcano@linaro.org

thermal: core: Increase maximum number of trip points

2022-09-30T17:50:10+00:00

On one of the Chrome system, if we define more than 12 trip points,
probe for thermal sensor fails with
"int3403 thermal: probe of INTC1046:03 failed with error -22"
and throws an error as
"thermal_sys: Error: Incorrect number of thermal trips".

The thermal_zone_device_register() interface needs maximum
number of trip points supported in a zone as an argument.
This number can't exceed THERMAL_MAX_TRIPS, which is currently
set to 12. To address this issue, THERMAL_MAX_TRIPS value
has to be increased.

This interface also has an argument to specify a mask of trips
which are writable. This mask is defined as an int.
This mask sets the ceiling for increasing maximum number of
supported trips. With the current implementation, maximum number
of trips can be supported is 31.

Also, THERMAL_MAX_TRIPS macro is used in one place only.
So, remove THERMAL_MAX_TRIPS macro and compare num_trips
directly with using a macro BITS_PER_TYPE(int)-1.

Signed-off-by: Sumeet Pawnikar 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Rafael J. Wysocki

thermal/of: Remove old OF code

2022-08-17T12:09:39+00:00

All the drivers are converted to the new OF API, remove the old OF code.

Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20220804224349.1926752-34-daniel.lezcano@linexp.org
Signed-off-by: Daniel Lezcano

thermal/of: Rework the thermal device tree initialization

2022-08-17T12:09:37+00:00

The following changes are reworking entirely the thermal device tree
initialization. The old version is kept until the different drivers
using it are converted to the new API.

The old approach creates the different actors independently. This
approach is the source of the code duplication in the thermal OF
because a thermal zone is created but a sensor is registered
after. The thermal zones are created unconditionnaly with a fake
sensor at init time, thus forcing to provide fake ops and store all
the thermal zone related information in duplicated structures. Then
the sensor is initialized and the code looks up the thermal zone name
using the device tree. Then the sensor is associated to the thermal
zone, and the sensor specific ops are called with a second level of
indirection from the thermal zone ops.

When a sensor is removed (with a module unload), the thermal zone
stays there with the fake sensor.

The cooling device associated with a thermal zone and a trip point is
stored in a list, again duplicating information, using the node name
of the device tree to match afterwards the cooling devices.

The new approach is simpler, it creates a thermal zone when the sensor
is registered and destroys it when the sensor is removed. All the
matching between the cooling device, trip points and thermal zones are
done using the device tree, as well as bindings. The ops are no longer
specific but uses the generic ones provided by the thermal framework.

When the old code won't have any users, it can be removed and the
remaining thermal OF code will be much simpler.

Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20220804224349.1926752-2-daniel.lezcano@linexp.org
Signed-off-by: Daniel Lezcano

thermal/core: Add thermal_trip in thermal_zone

2022-07-28T15:29:56+00:00

The thermal trip points are properties of a thermal zone and the
different sub systems should be able to save them in the thermal zone
structure instead of having their own definition.

Give the opportunity to the drivers to create a thermal zone with
thermal trips which will be accessible directly from the thermal core
framework.

As we added the thermal trip points structure in the thermal zone,
let's extend the thermal zone register function to have the thermal
trip structures as a parameter and store it in the 'trips' field of
the thermal zone structure.

The thermal zone contains the trip point, we can store them directly
when registering the thermal zone. That will allow another step
forward to remove the duplicate thermal zone structure we find in the
thermal_of code.

Cc: Alexandre Bailon 
Cc: Kevin Hilman 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20220722200007.1839356-9-daniel.lezcano@linexp.org
Signed-off-by: Daniel Lezcano

thermal/core: Rename 'trips' to 'num_trips'

2022-07-28T15:29:56+00:00

In order to use thermal trips defined in the thermal structure, rename
the 'trips' field to 'num_trips' to have the 'trips' field containing the
thermal trip points.

Cc: Alexandre Bailon 
Cc: Kevin Hilman 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20220722200007.1839356-8-daniel.lezcano@linexp.org
Signed-off-by: Daniel Lezcano

thermal/of: Move thermal_trip structure to thermal.h

2022-07-28T15:29:54+00:00

The structure thermal_trip is now generic and will be usable by the
different sensor drivers in place of their own structure.

Move its definition to thermal.h to make it accessible.

Cc: Alexandre Bailon 
Cc: Kevin Hilman 
Signed-off-by: Daniel Lezcano 
Reviewed-by: Lukasz Luba 
Link: https://lore.kernel.org/r/20220722200007.1839356-5-daniel.lezcano@linexp.org
Signed-off-by: Daniel Lezcano

thermal/core: Remove DROP_FULL and RAISE_FULL

2022-07-28T15:29:47+00:00

The trends DROP_FULL and RAISE_FULL are not used and were never used
in the past AFAICT. Remove these conditions as they seems to not be
handled anywhere.

Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20220629151012.3115773-2-daniel.lezcano@linaro.org
Signed-off-by: Daniel Lezcano

thermal/drivers/thermal_of: Add change_mode ops support for thermal_of sensor

2022-05-19T10:11:51+00:00

The sensor driver which register through thermal_of interface doesn't
have an option to get thermal zone mode change notification from
thermal core.

Add support for change_mode ops in thermal_of interface so that sensor
driver can use this ops for mode change notification.

Signed-off-by: Manaf Meethalavalappu Pallikunhi 
Link: https://lore.kernel.org/r/1646767586-31908-1-git-send-email-quic_manafm@quicinc.com
Signed-off-by: Daniel Lezcano

thermal: Spelling s/scallbacks/callbacks/

2021-08-14T13:43:28+00:00

Fix a misspelling of the word "callbacks".

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/ae38372996a23bb67769e2d62ca170ae9457c4df.1626261946.git.geert+renesas@glider.be