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

[Michael Reeves via B4 Relay]

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(+)
---
base-commit: cc3aa43b44bdb43dfbac0fcb51c56594a11338a8
change-id: 20260105-b4-macsmc-power-d017cc7f53ac

Best regards,
-- 
Michael Reeves <michael.reeves077 at gmail.com>