Hi. This series adds support for Apple touchscreens using the Z2 protocol. Those are used as the primary touchscreen on mobile Apple devices, and for the touchbar on laptops using the M-series chips. (T1/T2 laptops have a coprocessor in charge of speaking Z2 to the touchbar). Originally sent as a RFC at https://lore.kernel.org/all/20230223-z2-for-ml-v1-0-028f2b85dc15@xxxxxxxxx/ The changes since then mostly address the review feedback, but also add another machine that has this specific controller. The extra gpio needed to be toggled turned out to be a quirk of the j293, normal CS is unusable on it, and a gpio has to be used instead. (j493 does not have this quirk) Signed-off-by: Sasha Finkelstein <fnkl.kernel@xxxxxxxxx> --- Sasha Finkelstein (4): dt-bindings: input: touchscreen: Add Z2 controller input: apple_z2: Add a driver for Apple Z2 touchscreens arm64: dts: apple: Add touchbar digitizer nodes MAINTAINERS: Add entries for Apple Z2 touchscreen driver .../input/touchscreen/apple,z2-multitouch.yaml | 83 ++++ MAINTAINERS | 2 + arch/arm64/boot/dts/apple/t8103-j293.dts | 24 + arch/arm64/boot/dts/apple/t8103.dtsi | 19 + arch/arm64/boot/dts/apple/t8112-j493.dts | 20 + arch/arm64/boot/dts/apple/t8112.dtsi | 14 + drivers/input/touchscreen/Kconfig | 13 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/apple_z2.c | 495 +++++++++++++++++++++ 9 files changed, 671 insertions(+) --- base-commit: 9f16d5e6f220661f73b36a4be1b21575651d8833 change-id: 20241124-z2-c012b528ea0d
