Maximilian Luz b05ff1002a HID: Add support for Surface Aggregator Module HID transport
Add a HID transport driver to support integrated HID devices on newer
Microsoft Surface models (specifically 7th-generation, i.e. Surface
Laptop 3, Surface Book 3, and later).

On those models, the internal keyboard and touchpad (as well as some
other HID devices with currently unknown function) are connected via the
generic HID subsystem (TC=0x15) of the Surface System Aggregator Module
(SSAM). This subsystem provides a generic HID transport layer, support
for which is implemented by this driver.

Co-developed-by: Blaž Hrastnik <blaz@mxxn.io>
Signed-off-by: Blaž Hrastnik <blaz@mxxn.io>
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-03-30 09:19:29 +02:00

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# SPDX-License-Identifier: GPL-2.0+
menu "Surface System Aggregator Module HID support"
depends on SURFACE_AGGREGATOR
depends on INPUT
config SURFACE_HID
tristate "HID transport driver for Surface System Aggregator Module"
depends on SURFACE_AGGREGATOR_REGISTRY
select SURFACE_HID_CORE
help
Driver to support integrated HID devices on newer Microsoft Surface
models.
This driver provides support for the HID transport protocol provided
by the Surface Aggregator Module (i.e. the embedded controller) on
7th-generation Microsoft Surface devices, i.e. Surface Book 3 and
Surface Laptop 3. On those models, it is mainly used to connect the
integrated touchpad and keyboard.
Say M or Y here, if you want support for integrated HID devices, i.e.
integrated touchpad and keyboard, on 7th generation Microsoft Surface
models.
endmenu
config SURFACE_HID_CORE
tristate
select HID