[PATCH v2 0/2] Add Apple Silicon SMC power driver

[Lee Jones]

On Fri, 09 Jan 2026, Michael Reeves via B4 Relay wrote:

> This series adds a power supply driver for the Apple SMC found on
> Apple Silicon devices. This allows the kernel to report AC status,
> battery charging status, and power metrics, and modify the charging
> behaviour.
> 
> The first patch adds the driver itself, and the second patch wires it
> up to the MFD core.
> 
> The driver is based on an original out-of-tree implementation by
> Hector Martin. It has been refactored for upstream inclusion, 
> including support for newer SMC firmwares, devices without batteries,
> dynamic property detection and improved state management.
> 
> Tested on: Apple M3 (MacBook Air, J613)
> 
> Signed-off-by: Michael Reeves <michael.reeves077 at gmail.com>
> ---
> Changes in v2:
> - Added Reviewed-by: Neal Gompa <neal at gompa.dev> to all patches.
> - Fixed Makefile alignment by using tabs for the macsmc-power entry.
> - Upgraded physical battery exhaustion log level to EMERG.
> - Downgraded software-triggered orderly poweroff log level to CRIT.
> - Added check for CHIS key to skip AC registration on desktop models.
> - Link to v1: https://lore.kernel.org/r/20260105-b4-macsmc-power-v1-0-62954c42a555@gmail.com
> 
> ---
> Michael Reeves (2):
>       power: supply: Add macsmc-power driver for Apple Silicon
>       mfd: macsmc: Wire up Apple SMC power driver
> 
>  MAINTAINERS                         |   1 +
>  drivers/mfd/macsmc.c                |   1 +
>  drivers/power/supply/Kconfig        |  11 +
>  drivers/power/supply/Makefile       |   1 +
>  drivers/power/supply/macsmc-power.c | 883 ++++++++++++++++++++++++++++++++++++
>  5 files changed, 897 insertions(+)

Let me know when the Power driver has been merged and I'll take the MFD part.

-- 
Lee Jones [李琼斯]