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kernel-aes67/include/linux/intel_tcc.h

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thermal/intel: Introduce Intel TCC library 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>
2022-12-19 10:46:15 -05:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* header for Intel TCC (thermal control circuitry) library
*
* Copyright (C) 2022 Intel Corporation.
*/
#ifndef __INTEL_TCC_H__
#define __INTEL_TCC_H__
#include <linux/types.h>
int intel_tcc_get_tjmax(int cpu);
int intel_tcc_get_offset(int cpu);
int intel_tcc_set_offset(int cpu, int offset);
thermal/intel: Fix intel_tcc_get_temp() to support negative CPU temperature 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 <rui.zhang@intel.com> Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com> Cc: 6.3+ <stable@vger.kernel.org> # 6.3+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-02-05 20:54:09 -05:00
int intel_tcc_get_temp(int cpu, int *temp, bool pkg);
thermal/intel: Introduce Intel TCC library 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>
2022-12-19 10:46:15 -05:00
#endif /* __INTEL_TCC_H__ */