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@gmail.com>
> ---
> Changes in v2:
> - Added Reviewed-by: Neal Gompa <neal@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]