# SPDX-License-Identifier: GPL-2.0-only## Microsoft Surface Platform-Specific Drivers# menuconfig SURFACE_PLATFORMS	bool "Microsoft Surface Platform-Specific Device Drivers"	depends on ARM64 || X86 || COMPILE_TEST	default y if ARM64 || X86	help	  Say Y here to get to see options for platform-specific device drivers	  for Microsoft Surface devices. This option alone does not add any	  kernel code. 	  If you say N, all options in this submenu will be skipped and disabled. if SURFACE_PLATFORMS config SURFACE3_WMI	tristate "Surface 3 WMI Driver"	depends on ACPI_WMI	depends on DMI	depends on INPUT	depends on SPI	help	  Say Y here if you have a Surface 3. 	  To compile this driver as a module, choose M here: the module will	  be called surface3-wmi. config SURFACE_3_POWER_OPREGION	tristate "Surface 3 battery platform operation region support"	depends on ACPI	depends on I2C	help	  This driver provides support for ACPI operation	  region of the Surface 3 battery platform driver. config SURFACE_ACPI_NOTIFY	tristate "Surface ACPI Notify Driver"	depends on SURFACE_AGGREGATOR	help	  Surface ACPI Notify (SAN) driver for Microsoft Surface devices. 	  This driver provides support for the ACPI interface (called SAN) of	  the Surface System Aggregator Module (SSAM) EC. This interface is used	  on 5th- and 6th-generation Microsoft Surface devices (including	  Surface Pro 5 and 6, Surface Book 2, Surface Laptops 1 and 2, and in	  reduced functionality on the Surface Laptop 3) to execute SSAM	  requests directly from ACPI code, as well as receive SSAM events and	  turn them into ACPI notifications. It essentially acts as a	  translation layer between the SSAM controller and ACPI. 	  Specifically, this driver may be needed for battery status reporting,	  thermal sensor access, and real-time clock information, depending on	  the Surface device in question. config SURFACE_AGGREGATOR_CDEV	tristate "Surface System Aggregator Module User-Space Interface"	depends on SURFACE_AGGREGATOR	help	  Provides a misc-device interface to the Surface System Aggregator	  Module (SSAM) controller. 	  This option provides a module (called surface_aggregator_cdev), that,	  when loaded, will add a client device (and its respective driver) to	  the SSAM controller. Said client device manages a misc-device	  interface (/dev/surface/aggregator), which can be used by user-space	  tools to directly communicate with the SSAM EC by sending requests and	  receiving the corresponding responses. 	  The provided interface is intended for debugging and development only,	  and should not be used otherwise. config SURFACE_AGGREGATOR_HUB	tristate "Surface System Aggregator Module Subsystem Device Hubs"	depends on SURFACE_AGGREGATOR	depends on SURFACE_AGGREGATOR_BUS	help	  Device-hub drivers for Surface System Aggregator Module (SSAM) subsystem	  devices. 	  Provides subsystem hub drivers which manage client devices on various	  SSAM subsystems. In some subsystems, notably the BAS subsystem managing	  devices contained in the base of the Surface Book 3 and the KIP subsystem	  managing type-cover devices in the Surface Pro 8 and Surface Pro X,	  devices can be (hot-)removed. Hub devices and drivers are required to	  manage these subdevices. 	  Devices managed via these hubs are:	  - Battery/AC devices (Surface Book 3).	  - HID input devices (7th-generation and later models with detachable	    input devices). 	  Select M (recommended) or Y here if you want support for the above	  mentioned devices on the corresponding Surface models. Without this	  module, the respective devices mentioned above will not be instantiated	  and thus any functionality provided by them will be missing, even when	  drivers for these devices are present. This module only provides the	  respective subsystem hubs. Both drivers and device specification (e.g.	  via the Surface Aggregator Registry) for these devices still need to be	  selected via other options. config SURFACE_AGGREGATOR_REGISTRY	tristate "Surface System Aggregator Module Device Registry"	depends on SURFACE_AGGREGATOR	depends on SURFACE_AGGREGATOR_BUS	help	  Device-registry for Surface System Aggregator Module (SSAM) devices. 	  Provides a module and driver which act as a device-registry for SSAM	  client devices that cannot be detected automatically, e.g. via ACPI.	  Such devices are instead provided and managed via this registry. 	  Devices provided via this registry are:	  - Platform profile (performance-/cooling-mode) device (5th- and later	    generations).	  - Battery/AC devices (7th-generation).	  - HID input devices (7th-generation). 	  Select M (recommended) or Y here if you want support for the above	  mentioned devices on the corresponding Surface models. Without this	  module, the respective devices will not be instantiated and thus any	  functionality provided by them will be missing, even when drivers for	  these devices are present. In other words, this module only provides	  the respective client devices. Drivers for these devices still need to	  be selected via the other options. config SURFACE_AGGREGATOR_TABLET_SWITCH	tristate "Surface Aggregator Generic Tablet-Mode Switch Driver"	depends on SURFACE_AGGREGATOR	depends on SURFACE_AGGREGATOR_BUS	depends on INPUT	help	  Provides a tablet-mode switch input device on Microsoft Surface models	  using the KIP subsystem for detachable keyboards (e.g. keyboard covers)	  or the POS subsystem for device/screen posture changes. 	  The KIP subsystem is used on newer Surface generations to handle	  detachable input peripherals, specifically the keyboard cover (containing	  keyboard and touchpad) on the Surface Pro 8 and Surface Pro X. The POS	  subsystem is used for device posture change notifications on the Surface	  Laptop Studio. This module provides a driver to let user-space know when	  the device should be considered in tablet-mode due to the keyboard cover	  being detached or folded back (essentially signaling when the keyboard is	  not available for input). It does so by creating a tablet-mode switch	  input device, sending the standard SW_TABLET_MODE event on mode change. 	  Select M or Y here, if you want to provide tablet-mode switch input	  events on the Surface Pro 8, Surface Pro X, and Surface Laptop Studio. config SURFACE_DTX	tristate "Surface DTX (Detachment System) Driver"	depends on SURFACE_AGGREGATOR	depends on INPUT	help	  Driver for the Surface Book clipboard detachment system (DTX). 	  On the Surface Book series devices, the display part containing the	  CPU (called the clipboard) can be detached from the base (containing a	  battery, the keyboard, and, optionally, a discrete GPU) by (if	  necessary) unlocking and opening the latch connecting both parts. 	  This driver provides a user-space interface that can influence the	  behavior of this process, which includes the option to abort it in	  case the base is still in use or speed it up in case it is not. 	  Note that this module can be built without support for the Surface	  Aggregator Bus (i.e. CONFIG_SURFACE_AGGREGATOR_BUS=n). In that case,	  some devices, specifically the Surface Book 3, will not be supported. config SURFACE_GPE	tristate "Surface GPE/Lid Support Driver"	depends on ACPI	depends on DMI	help	  This driver marks the GPEs related to the ACPI lid device found on	  Microsoft Surface devices as wakeup sources and prepares them	  accordingly. It is required on those devices to allow wake-ups from	  suspend by opening the lid. config SURFACE_HOTPLUG	tristate "Surface Hot-Plug Driver"	depends on ACPI	depends on GPIOLIB	help	  Driver for out-of-band hot-plug event signaling on Microsoft Surface	  devices with hot-pluggable PCIe cards. 	  This driver is used on Surface Book (2 and 3) devices with a	  hot-pluggable discrete GPU (dGPU). When not in use, the dGPU on those	  devices can enter D3cold, which prevents in-band (standard) PCIe	  hot-plug signaling. Thus, without this driver, detaching the base	  containing the dGPU will not correctly update the state of the	  corresponding PCIe device if it is in D3cold. This driver adds support	  for out-of-band hot-plug notifications, ensuring that the device state	  is properly updated even when the device in question is in D3cold. 	  Select M or Y here, if you want to (fully) support hot-plugging of	  dGPU devices on the Surface Book 2 and/or 3 during D3cold. config SURFACE_PLATFORM_PROFILE	tristate "Surface Platform Profile Driver"	depends on ACPI	depends on SURFACE_AGGREGATOR_REGISTRY	select ACPI_PLATFORM_PROFILE	help	  Provides support for the ACPI platform profile on 5th- and later	  generation Microsoft Surface devices. 	  More specifically, this driver provides ACPI platform profile support	  on Microsoft Surface devices with a Surface System Aggregator Module	  (SSAM) connected via the Surface Serial Hub (SSH / SAM-over-SSH). In	  other words, this driver provides platform profile support on the	  Surface Pro 5, Surface Book 2, Surface Laptop, Surface Laptop Go and	  later. On those devices, the platform profile can significantly	  influence cooling behavior, e.g. setting it to 'quiet' (default) or	  'low-power' can significantly limit performance of the discrete GPU on	  Surface Books, while in turn leading to lower power consumption and/or	  less fan noise. 	  Select M or Y here, if you want to include ACPI platform profile	  support on the above mentioned devices. config SURFACE_PRO3_BUTTON	tristate "Power/home/volume buttons driver for Microsoft Surface Pro 3/4 tablet"	depends on ACPI	depends on INPUT	help	  This driver handles the power/home/volume buttons on the Microsoft Surface Pro 3/4 tablet. source "drivers/platform/surface/aggregator/Kconfig" endif # SURFACE_PLATFORMS