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# SPDX-License-Identifier: GPL-2.0
#
# Intel x86 Platform-Specific Drivers
#
config INTEL_PMC_CORE
tristate "Intel PMC Core driver"
depends on PCI
depends on ACPI
depends on INTEL_PMT_TELEMETRY
select INTEL_PMC_SSRAM_TELEMETRY
select INTEL_PMC_PWRM_TELEMETRY
help
The Intel Platform Controller Hub for Intel Core SoCs provides access
to Power Management Controller registers via various interfaces. This
driver can utilize debugging capabilities and supported features as
exposed by the Power Management Controller. It also may perform some
tasks in the PMC in order to enable transition into the SLPS0 state.
It should be selected on all Intel platforms supported by the driver.
Supported features:
- SLP_S0_RESIDENCY counter
- PCH IP Power Gating status
- LTR Ignore / LTR Show
- MPHY/PLL gating status (Sunrisepoint PCH only)
- SLPS0 Debug registers (Cannonlake/Icelake PCH)
- Low Power Mode registers (Tigerlake and beyond)
- PMC quirks as needed to enable SLPS0/S0ix
config INTEL_PMC_SSRAM_TELEMETRY
tristate
help
This driver discovers PMC SSRAM telemetry regions through the PMC's
MMIO interface (PCI) or ACPI _DSD properties and registers them with
the Intel VSEC framework as Intel PMT telemetry devices.
It probes the PMC SSRAM device, extracts DVSEC information from MMIO,
reads device IDs and base addresses for multiple PMCs (main, IOE, PCH),
and exposes the discovered telemetry through Intel PMT interfaces
(including sysfs).
This option is selected by INTEL_PMC_CORE.
config INTEL_PMC_PWRM_TELEMETRY
tristate
help
This driver discovers PMC PWRM telemetry regions described in ACPI
_DSD and registers them with the Intel VSEC framework as Intel PMT
telemetry devices.
It validates the ACPI discovery data and publishes the discovered
regions so they can be accessed through the Intel PMT telemetry
interfaces (including sysfs).
This option is selected by INTEL_PMC_CORE.
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