Hi, This is version 3 of the series adds support for the Apple Mac GPIO driver. These GPIOs are hadled via the System Management Controller. The first patch adds the core SMC support to the MFD subsystem. Patch 2 prepares the printf code for printing generic fourccs, as required by patch 4 and 7. Patch 3 adds the DT binding documentation for the rtkit backend. Patch 4 adds the rtkit backend for the SMC core. Patch 5 adds the device tree updates for the rtkit communication channel and gpio sub device to DT. Patch 6 adds the DT binding documentation for the gpio client. Patch 7 adds the gpio client. Patches mostly taken from the Asahi project and then modified due to review comments from the previous postings. I may have missed some comments as there's been quite a lot of discussion on previous postings. Documentation/core-api/printk-formats.rst | 32 ++ .../devicetree/bindings/gpio/apple,smc-gpio.yaml | 37 ++ .../devicetree/bindings/mfd/apple,smc.yaml | 67 +++ arch/arm64/boot/dts/apple/t8103.dtsi | 27 ++ drivers/gpio/Kconfig | 11 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-macsmc.c | 245 +++++++++++ drivers/mfd/Kconfig | 4 + drivers/mfd/Makefile | 1 + drivers/mfd/macsmc.c | 239 +++++++++++ drivers/platform/Kconfig | 2 + drivers/platform/Makefile | 1 + drivers/platform/apple/Kconfig | 34 ++ drivers/platform/apple/Makefile | 7 + drivers/platform/apple/macsmc-rtkit.c | 455 +++++++++++++++++++++ include/linux/mfd/macsmc.h | 104 +++++ lib/test_printf.c | 39 +- lib/vsprintf.c | 35 +- 18 files changed, 1328 insertions(+), 13 deletions(-) create mode 100644 Documentation/devicetree/bindings/gpio/apple,smc-gpio.yaml create mode 100644 Documentation/devicetree/bindings/mfd/apple,smc.yaml create mode 100644 drivers/gpio/gpio-macsmc.c create mode 100644 drivers/mfd/macsmc.c create mode 100644 drivers/platform/apple/Kconfig create mode 100644 drivers/platform/apple/Makefile create mode 100644 drivers/platform/apple/macsmc-rtkit.c create mode 100644 include/linux/mfd/macsmc.h -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
