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Platforms that support low power modes (LPM) such as Tiger Lake maintain requirements for each sub-state that a readable in the PMC. However, unlike LPM status registers, requirement registers are not memory mapped but are available from an ACPI _DSM. Collect the requirements for Tiger Lake using the _DSM method and store in a buffer. Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Co-developed-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: David E. Box <david.e.box@linux.intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210417031252.3020837-6-david.e.box@linux.intel.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
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