This short series implements support for the laptop keyboards on the Apple Silicon Mac laptops. These keyboards are connected to an SPI bus, so this adds a driver for the SPI controller integrated on the SoC, as well as the driver for the keyboard itself. This makes it possible to interact with U-Boot and EFI applications without the need for an external USB keyboard.
ChangeLog:
v2: - Drop delay after enabling controller - Check for errors in spi calls - Add comments
Mark Kettenis (2): spi: apple: Add driver for Apple SPI controller input: apple: Add support for Apple SPI keyboard
arch/arm/Kconfig | 2 + configs/apple_m1_defconfig | 1 + drivers/input/Kconfig | 8 + drivers/input/Makefile | 1 + drivers/input/apple_spi_kbd.c | 271 ++++++++++++++++++++++++++++++++ drivers/spi/Kconfig | 7 + drivers/spi/Makefile | 1 + drivers/spi/apple_spi.c | 285 ++++++++++++++++++++++++++++++++++ include/configs/apple.h | 2 +- 9 files changed, 577 insertions(+), 1 deletion(-) create mode 100644 drivers/input/apple_spi_kbd.c create mode 100644 drivers/spi/apple_spi.c