[PATCH v2 0/7] Add Apple Mac System Management Controller GPIOs

[Russell King (Oracle)]

Hi,

[Andy dropped from the Cc lists; he's taking a break.]

This series adds support for the Apple Mac GPIO driver. These GPIOs
are hadled via the System Management Controller.

The first two patches add the DT binding documentation for the new
drivers. No changes from the first posting (I think there's still
some discussion going on about how best to handle these.)

Patch 3 adds apple_rtkit_poll() and has had no changes since v1.

Patch 4 is new, extending the existing FourCC format code to be able
to print other endian FourCC codes.

Patch 5 adds the SMC core and rtkit driver. Changes in v2 include
properly limiting the data size (since it is limited to the width of
the size fields in the mailbox messages, not the shmem size) and also
to properly cleanup after failure to send the initialisation message.

Patch 6 adds the SMC GPIO support. Changes in v2 include some of the
issues Andy pointed out,

Patch 7 is new, adding the SMC nodes to the dtsi.

Patches taken from the Asahi project.

 Documentation/core-api/printk-formats.rst          |  32 ++
 .../devicetree/bindings/gpio/gpio-macsmc.yaml      |  28 ++
 .../devicetree/bindings/mfd/apple,smc.yaml         |  65 +++
 arch/arm64/boot/dts/apple/t8103.dtsi               |  26 ++
 drivers/gpio/Kconfig                               |  11 +
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-macsmc.c                         | 242 +++++++++++
 drivers/platform/Kconfig                           |   2 +
 drivers/platform/Makefile                          |   1 +
 drivers/platform/apple/Kconfig                     |  49 +++
 drivers/platform/apple/Makefile                    |  11 +
 drivers/platform/apple/smc.h                       |  28 ++
 drivers/platform/apple/smc_core.c                  | 249 +++++++++++
 drivers/platform/apple/smc_rtkit.c                 | 453 +++++++++++++++++++++
 drivers/soc/apple/rtkit.c                          |   6 +
 include/linux/mfd/macsmc.h                         |  86 ++++
 include/linux/soc/apple/rtkit.h                    |  12 +
 lib/vsprintf.c                                     |  35 +-
 18 files changed, 1331 insertions(+), 6 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-macsmc.yaml
 create mode 100644 Documentation/devicetree/bindings/mfd/apple,smc.yaml
 create mode 100644 drivers/gpio/gpio-macsmc.c
 create mode 100644 drivers/platform/apple/Kconfig
 create mode 100644 drivers/platform/apple/Makefile
 create mode 100644 drivers/platform/apple/smc.h
 create mode 100644 drivers/platform/apple/smc_core.c
 create mode 100644 drivers/platform/apple/smc_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!