linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [RFC PATCH 0/2] Add a generic virtual thermal sensor
@ 2021-08-19 12:32 Alexandre Bailon
  2021-08-19 12:32 ` [RFC PATCH 1/2] thermal: provide a way to get thermal sensor from a device tree node Alexandre Bailon
                   ` (2 more replies)
  0 siblings, 3 replies; 8+ messages in thread
From: Alexandre Bailon @ 2021-08-19 12:32 UTC (permalink / raw)
  To: rui.zhang, daniel.lezcano, amitk
  Cc: linux-pm, linux-kernel, ben.tseng, khilman, Alexandre Bailon

This series add a virtual thermal sensor that uses the hardware thermal sensors,
aggregate them to return a temperature.

My first aptempt was to do the aggregation in the thermal zone but it was not
that easy to do, and, there were some case that would have been conflictual
such as setting differents trip for a regular zone and a multisensor zone.

Instead, I made a virtual thermal sensor that could registered in a thermal
zone, and have its own properties.
It could be added in the device tree, with the list of sensors to aggregate,
and the type of aggregation to be done.

As example:
  soc_max_sensor: soc_max_sensor {
    compatible = "generic,thermal-aggregator";
    #thermal-sensor-cells = <1>;
    type = "max";
    thermal-sensors = <&lvts 0>, <&lvts 1>, <&lvts 2>, <&lvts 3>,
          <&lvts 4>, <&lvts 5>, <&lvts 6>, <&lvts 7>,
          <&lvts 8>, <&lvts 9>, <&lvts 10>, <&lvts 11>,
          <&lvts 12>, <&lvts 13>, <&lvts 14>, <&lvts 15>,
          <&lvts 16>;
  };

The current series build and work but it would require to be completed
aswell a lot of cleanup.
Before working on it, I would like to get some feedback and I know if that
would an acceptable solution and continue that way.

Follows the following discussion:
https://patchwork.kernel.org/project/linux-mediatek/patch/20210617114707.10618-3-ben.tseng@mediatek.com/

Alexandre Bailon (2):
  thermal: provide a way to get thermal sensor from a device tree node
  thermal: add a virtual sensor to aggregate temperatures

 drivers/thermal/Kconfig              |   8 ++
 drivers/thermal/Makefile             |   1 +
 drivers/thermal/thermal_aggregator.c | 134 +++++++++++++++++++++++++++
 drivers/thermal/thermal_of.c         |  43 +++++++++
 include/linux/thermal.h              |  12 +++
 5 files changed, 198 insertions(+)
 create mode 100644 drivers/thermal/thermal_aggregator.c

-- 
2.31.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2021-08-23  8:40 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-19 12:32 [RFC PATCH 0/2] Add a generic virtual thermal sensor Alexandre Bailon
2021-08-19 12:32 ` [RFC PATCH 1/2] thermal: provide a way to get thermal sensor from a device tree node Alexandre Bailon
2021-08-19 12:32 ` [RFC PATCH 2/2] thermal: add a virtual sensor to aggregate temperatures Alexandre Bailon
2021-08-20 12:52   ` Daniel Lezcano
2021-08-23  7:54     ` Alexandre Bailon
2021-08-20 11:30 ` [RFC PATCH 0/2] Add a generic virtual thermal sensor Daniel Lezcano
2021-08-23  7:35   ` Alexandre Bailon
2021-08-23  8:40     ` Daniel Lezcano

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).