platform/x86/intel/pmc: Add PSON residency counter

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Tiger Lake platform onwards, devices have the capability to track the
duration of time that their Power Supply Units (PSUs) are turned off
during S0ix. This patch adds a debugfs file `pson_residency_usec` to
provide access to this counter.

Signed-off-by: Michael Bottini <michael.a.bottini@linux.intel.com>
Signed-off-by: Rajvi Jingar <rajvi.jingar@linux.intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20231219042216.2592029-2-rajvi.jingar@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

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Rajvi Jingar 2023-12-18 20:22:10 -08:00 • committed by Hans de Goede

parent 1f5e56c9f6

commit b6258fa2c7

2 changed files with 39 additions and 0 deletions

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37

drivers/platform/x86/intel/pmc/core.c

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2

drivers/platform/x86/intel/pmc/core.h

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