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2024-02-12thermal/intel: Fix intel_tcc_get_temp() to support negative CPU temperatureZhang Rui1-6/+6
CPU temperature can be negative in some cases. Thus the negative CPU temperature should not be considered as a failure. Fix intel_tcc_get_temp() and its users to support negative CPU temperature. Fixes: a3c1f066e1c5 ("thermal/intel: Introduce Intel TCC library") Signed-off-by: Zhang Rui <[email protected]> Reviewed-by: Stanislaw Gruszka <[email protected]> Cc: 6.3+ <[email protected]> # 6.3+ Signed-off-by: Rafael J. Wysocki <[email protected]>
2022-12-30thermal/intel: Introduce Intel TCC libraryZhang Rui1-0/+139
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 <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>