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

[Bartosz Golaszewski]

On Tue, Sep 6, 2022 at 3:18 PM Russell King (Oracle)
<linux at armlinux.org.uk> wrote:
>
> 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!

For GPIO:

Reviewed-by: Bartosz Golaszewski <brgl at bgdev.pl>