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This driver provides battery and AC status monitoring for Apple Silicon Macs via the SMC (System Management Controller). It supports reporting capacity, voltage, current, and charging status, and modifying the charging behaviour across multiple generations of SMC firmware. Signed-off-by: Hector Martin <marcan@marcan.st> Co-developed-by: Joey Gouly <joey.gouly@arm.com> Signed-off-by: Joey Gouly <joey.gouly@arm.com> Co-developed-by: Janne Grunau <j@jannau.net> Signed-off-by: Janne Grunau <j@jannau.net> Reviewed-by: Neal Gompa <neal@gompa.dev> Reviewed-by: Sven Peter <sven@kernel.org> Co-developed-by: Michael Reeves <michael.reeves077@gmail.com> Signed-off-by: Michael Reeves <michael.reeves077@gmail.com> Link: https://patch.msgid.link/20260217-b4-macsmc-power-v7-1-4a4d63664362@gmail.com Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>