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linux/drivers/platform/x86/intel/Kconfig
Srinivas Pandruvada 47731fd286 platform/x86/intel: Intel TPMI enumeration driver 
The TPMI (Topology Aware Register and PM Capsule Interface) provides a
flexible, extendable and PCIe enumerable MMIO interface for PM features.

For example Intel RAPL (Running Average Power Limit) provides a MMIO
interface using TPMI. This has advantage over traditional MSR
(Model Specific Register) interface, where a thread needs to be scheduled
on the target CPU to read or write. Also the RAPL features vary between
CPU models, and hence lot of model specific code. Here TPMI provides an
architectural interface by providing hierarchical tables and fields,
which will not need any model specific implementation.

The TPMI interface uses a PCI VSEC structure to expose the location of
MMIO region.

This VSEC structure is present in the PCI configuration space of the
Intel Out-of-Band (OOB) device, which  is handled by the Intel VSEC
driver. The Intel VSEC driver parses VSEC structures present in the PCI
configuration space of the given device and creates an auxiliary device
object for each of them. In particular, it creates an auxiliary device
object representing TPMI that can be bound by an auxiliary driver.

Introduce a TPMI driver that will bind to the TPMI auxiliary device
object created by the Intel VSEC driver.

The TPMI specification defines a PFS (PM Feature Structure) table.
This table is present in the TPMI MMIO region. The starting address
of PFS is derived from the tBIR (Bar Indicator Register) and "Address"
field from the VSEC header.

Each TPMI PM feature has one entry in the PFS with a unique TPMI
ID and its access details. The TPMI driver creates device nodes
for the supported PM features.

The names of the devices created by the TPMI driver start with the
"intel_vsec.tpmi-" prefix which is followed by a specific name of the
given PM feature (for example, "intel_vsec.tpmi-rapl.0").

The device nodes are create by using interface "intel_vsec_add_aux()"
provided by the Intel VSEC driver.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20230202010738.2186174-5-srinivas.pandruvada@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2023-02-06 13:47:30 +01:00

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# SPDX-License-Identifier: GPL-2.0-only
#
# Intel x86 Platform Specific Drivers
#
source "drivers/platform/x86/intel/atomisp2/Kconfig"
source "drivers/platform/x86/intel/ifs/Kconfig"
source "drivers/platform/x86/intel/int1092/Kconfig"
source "drivers/platform/x86/intel/int3472/Kconfig"
source "drivers/platform/x86/intel/pmc/Kconfig"
source "drivers/platform/x86/intel/pmt/Kconfig"
source "drivers/platform/x86/intel/speed_select_if/Kconfig"
source "drivers/platform/x86/intel/telemetry/Kconfig"
source "drivers/platform/x86/intel/wmi/Kconfig"
source "drivers/platform/x86/intel/uncore-frequency/Kconfig"
config INTEL_HID_EVENT
tristate "Intel HID Event"
depends on ACPI
depends on INPUT
depends on I2C
select INPUT_SPARSEKMAP
help
This driver provides support for the Intel HID Event hotkey interface.
Some laptops require this driver for hotkey support.
To compile this driver as a module, choose M here: the module will
be called intel_hid.
config INTEL_VBTN
tristate "Intel Virtual Button"
depends on ACPI
depends on INPUT
depends on I2C
select INPUT_SPARSEKMAP
help
This driver provides support for the Intel Virtual Button interface.
Some laptops require this driver for power button support.
To compile this driver as a module, choose M here: the module will
be called intel_vbtn.
config INTEL_INT0002_VGPIO
tristate "Intel ACPI INT0002 Virtual GPIO driver"
depends on GPIOLIB && ACPI && PM_SLEEP
select GPIOLIB_IRQCHIP
help
Some peripherals on Bay Trail and Cherry Trail platforms signal a
Power Management Event (PME) to the Power Management Controller (PMC)
to wakeup the system. When this happens software needs to explicitly
clear the PME bus 0 status bit in the GPE0a_STS register to avoid an
IRQ storm on IRQ 9.
This is modelled in ACPI through the INT0002 ACPI device, which is
called a "Virtual GPIO controller" in ACPI because it defines the
event handler to call when the PME triggers through _AEI and _L02
methods as would be done for a real GPIO interrupt in ACPI.
To compile this driver as a module, choose M here: the module will
be called intel_int0002_vgpio.
config INTEL_OAKTRAIL
tristate "Intel Oaktrail Platform Extras"
depends on ACPI
depends on ACPI_VIDEO || ACPI_VIDEO=n
depends on RFKILL && BACKLIGHT_CLASS_DEVICE && ACPI
help
Intel Oaktrail platform need this driver to provide interfaces to
enable/disable the Camera, WiFi, BT etc. devices. If in doubt, say Y
here; it will only load on supported platforms.
config INTEL_BXTWC_PMIC_TMU
tristate "Intel Broxton Whiskey Cove TMU Driver"
depends on INTEL_SOC_PMIC_BXTWC
depends on MFD_INTEL_PMC_BXT
select REGMAP
help
Select this driver to use Intel Broxton Whiskey Cove PMIC TMU feature.
This driver enables the alarm wakeup functionality in the TMU unit of
Whiskey Cove PMIC.
config INTEL_CHTDC_TI_PWRBTN
tristate "Intel Cherry Trail Dollar Cove TI power button driver"
depends on INTEL_SOC_PMIC_CHTDC_TI
depends on INPUT
help
This option adds a power button driver for Dollar Cove TI
PMIC on Intel Cherry Trail devices.
To compile this driver as a module, choose M here: the module
will be called intel_chtdc_ti_pwrbtn.
config INTEL_CHTWC_INT33FE
tristate "Intel Cherry Trail Whiskey Cove ACPI INT33FE Driver"
depends on X86 && ACPI && I2C && REGULATOR
depends on CHARGER_BQ24190=y || (CHARGER_BQ24190=m && m)
depends on USB_ROLES_INTEL_XHCI=y || (USB_ROLES_INTEL_XHCI=m && m)
depends on TYPEC_MUX_PI3USB30532=y || (TYPEC_MUX_PI3USB30532=m && m)
help
This driver add support for the Intel Cherry Trail Whiskey Cove
INT33FE ACPI device found on the GPD win and the GPD pocket.
The INT33FE ACPI device on these mini laptops contains I2cSerialBusV2
resources for a MAX17042 Fuel Gauge, FUSB302 USB Type-C Controller
and PI3USB30532 USB switch.
This driver instantiates i2c-clients for these, so that standard
i2c drivers for these chips can bind to the them.
If you enable this driver it is advised to also select
CONFIG_TYPEC_FUSB302=m, CONFIG_TYPEC_MUX_PI3USB30532=m and
CONFIG_BATTERY_MAX17042=m.
config INTEL_ISHTP_ECLITE
tristate "Intel ISHTP eclite controller Driver"
depends on INTEL_ISH_HID
depends on ACPI
help
This driver is for accessing the PSE (Programmable Service Engine) -
an Embedded Controller like IP - using ISHTP (Integrated Sensor Hub
Transport Protocol) to get battery, thermal and UCSI (USB Type-C
Connector System Software Interface) related data from the platform.
Users who don't want to use discrete Embedded Controller on Intel's
Elkhartlake platform can leverage this integrated solution of
ECLite which is part of PSE subsystem.
To compile this driver as a module, choose M here: the module
will be called intel_ishtp_eclite.
config INTEL_MRFLD_PWRBTN
tristate "Intel Merrifield Basin Cove power button driver"
depends on INTEL_SOC_PMIC_MRFLD
depends on INPUT
help
This option adds a power button driver for Basin Cove PMIC
on Intel Merrifield devices.
To compile this driver as a module, choose M here: the module
will be called intel_mrfld_pwrbtn.
config INTEL_PUNIT_IPC
tristate "Intel P-Unit IPC Driver"
help
This driver provides support for Intel P-Unit Mailbox IPC mechanism,
which is used to bridge the communications between kernel and P-Unit.
config INTEL_RST
tristate "Intel Rapid Start Technology Driver"
depends on ACPI
help
This driver provides support for modifying parameters on systems
equipped with Intel's Rapid Start Technology. When put in an ACPI
sleep state, these devices will wake after either a configured
timeout or when the system battery reaches a critical state,
automatically copying memory contents to disk. On resume, the
firmware will copy the memory contents back to RAM and resume the OS
as usual.
config INTEL_SDSI
tristate "Intel On Demand (Software Defined Silicon) Driver"
depends on INTEL_VSEC
depends on X86_64
help
This driver enables access to the Intel On Demand (formerly Software
Defined Silicon) interface used to provision silicon features with an
authentication certificate and capability license.
To compile this driver as a module, choose M here: the module will
be called intel_sdsi.
config INTEL_SMARTCONNECT
tristate "Intel Smart Connect disabling driver"
depends on ACPI
help
Intel Smart Connect is a technology intended to permit devices to
update state by resuming for a short period of time at regular
intervals. If a user enables this functionality under Windows and
then reboots into Linux, the system may remain configured to resume
on suspend. In the absence of any userspace to support it, the system
will then remain awake until something triggers another suspend.
This driver checks to determine whether the device has Intel Smart
Connect enabled, and if so disables it.
config INTEL_TPMI
tristate "Intel Topology Aware Register and PM Capsule Interface (TPMI)"
depends on INTEL_VSEC
depends on X86_64
help
The Intel Topology Aware Register and PM Capsule Interface (TPMI),
provides enumerable MMIO interface for power management features.
This driver creates devices, so that other PM feature driver can
be loaded for PM specific feature operation.
To compile this driver as a module, choose M here: the module will
be called intel_vsec_tpmi.
config INTEL_TURBO_MAX_3
bool "Intel Turbo Boost Max Technology 3.0 enumeration driver"
depends on X86_64 && SCHED_MC_PRIO
help
This driver reads maximum performance ratio of each CPU and set up
the scheduler priority metrics. In this way scheduler can prefer
CPU with higher performance to schedule tasks.
This driver is only required when the system is not using Hardware
P-States (HWP). In HWP mode, priority can be read from ACPI tables.
config INTEL_VSEC
tristate "Intel Vendor Specific Extended Capabilities Driver"
depends on PCI
select AUXILIARY_BUS
help
Adds support for feature drivers exposed using Intel PCIe VSEC and
DVSEC.
To compile this driver as a module, choose M here: the module will
be called intel_vsec.
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