tree fa8742ca65a4ccd8c3409e2d9af32da679e3fab9
parent 0c3e924b0a1760e0b12c063d6e11cc0222da7b8d
author Mark Kettenis <kettenis@openbsd.org> 1642952893 +0100
committer Tom Rini <trini@konsulko.com> 1644529463 -0500

input: apple: Add support for Apple SPI keyboard

This driver adds support for the keyboard on Apple Silicon laptops.
The controller for this keyboard sits on an SPI bus and uses an
Apple-specific HID over SPI protocol. The packets sent by this
controller for key presses and key releases are fairly simple and
are decoded directly by the code in this driver and converted into
standard Linux keycodes. The same controller handles the touchpad
found on these laptops.  Packets for touchpad events are simply
ignored.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested on: Macbook Air M1
Tested-by: Simon Glass <sjg@chromium.org>