[PATCH v3 0/7] Add Apple Mac System Management Controller GPIOs

[Russell King (Oracle)]

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/
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