thermal/intel: Introduce Intel TCC library

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There are several different drivers that accesses the Intel TCC
(thermal control circuitry) MSRs, and each of them has its own
implementation for the same functionalities, e.g. getting the current
temperature, getting the tj_max, and getting/setting the tj_max offset.

Introduce a library to unify the code for Intel CPU TCC MSR access.

At the same time, ensure the temperature is got based on the updated
tjmax value because tjmax can be changed at runtime for cases like
the Intel SST-PP (Intel Speed Select Technology - Performance Profile)
level change.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Zhang Rui 2022-12-19 23:46:15 +08:00 • committed by Rafael J. Wysocki

parent b878d3ba9b

commit a3c1f066e1

4 changed files with 162 additions and 0 deletions

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4

drivers/thermal/intel/Kconfig

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1

drivers/thermal/intel/Makefile

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139

drivers/thermal/intel/intel_tcc.c

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18

include/linux/intel_tcc.h

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