Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
35 lines
607 B
C
35 lines
607 B
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2020 Intel Corporation
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*/
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#include <asm/msr.h>
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#include "i915_drv.h"
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#include "librapl.h"
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bool librapl_supported(const struct drm_i915_private *i915)
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{
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/* Discrete cards require hwmon integration */
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if (IS_DGFX(i915))
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return false;
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return librapl_energy_uJ();
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}
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u64 librapl_energy_uJ(void)
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{
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unsigned long long power;
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u32 units;
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if (rdmsrq_safe(MSR_RAPL_POWER_UNIT, &power))
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return 0;
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units = (power & 0x1f00) >> 8;
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if (rdmsrq_safe(MSR_PP1_ENERGY_STATUS, &power))
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return 0;
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return (1000000 * power) >> units; /* convert to uJ */
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}
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