From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3146072631; Sun, 25 Jan 2026 13:14:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769346857; cv=none; b=i45anyg8fgtJ5/UKE4YHWk55BVYvscLx0wfLJs6dCLHE49JSfk9LY3bC9MHt+bJezZ6AYELhG0Qjs/pSBNdWfm0kbVsDQZB/lP81vxWY7a4pqMo3o3voY5E99IUMx7V/Y1SGmeFllpJZ68HruMHHoREQaFLqs4lygH0HbhLJ4/0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769346857; c=relaxed/simple; bh=JgxmdDWn5iWIrp1gT9mGTXjqUcTFbbNWhNSXuLV/Edc=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=SW2tEC7bZPluwEyLjIqf9DUQrtLCYp26WrI2mCX+T0O9JOSAGFExpMtU1CXR+zoMVKeCNg4gP9IULkHy2gLQuFpV76zPEZlfbuIdZ7WSRhuRjvteoydpS0ugCKdtnHfrBgHGOPzddAyLhgPaZMDP4OQOUl9A3D2sVswDuR4kpmA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=It2xrISj; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="It2xrISj" Received: by smtp.kernel.org (Postfix) with ESMTPS id F1BCDC4CEF1; Sun, 25 Jan 2026 13:14:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769346857; bh=JgxmdDWn5iWIrp1gT9mGTXjqUcTFbbNWhNSXuLV/Edc=; h=From:Subject:Date:To:Cc:Reply-To:From; b=It2xrISjtGIVITTpHP9upS2IZpJ2aIOlT0EKaQQnyvAS6Gc1lzP5MVMign7QbD/DE xa0464kzqi33uGCB/8eUYFPkfzuyVg9cS9JTmLAx5CxLwXvGhmdpYXd7WM+fX1UT4x V+syBK9urUWMr8RwnuC87tf8j9IvGLS4Z3Ls6OXTYukMTehhdMKih8gUg4hzw1IHTw lr/BZS6eI7/uUJFeQ0c7DR762VbPtMPXIRRCsiDgzcoxXfvkOX3FzI2vrvt9CkiNsm SilW/4a8zIVVUexwVygqsmhCBawFR5Hrwu7MFJXdfhSoQxVNZRpw7uVTHPTvjTVUqS vMYPi/ZTQ+SJw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id E87DEE63CA2; Sun, 25 Jan 2026 13:14:16 +0000 (UTC) From: Michael Reeves via B4 Relay Subject: [PATCH v5 0/2] Add Apple Silicon SMC power driver Date: Mon, 26 Jan 2026 00:14:10 +1100 Message-Id: <20260126-b4-macsmc-power-v5-0-302462673b18@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIACMXdmkC/2WNQQ6CMBBFr0Jm7ZhSaIOuvIdhMdQBJrGUtAY1h LtbSVy5fC/576+QOAonOBcrRF4kSZgymEMBbqRpYJRbZtBKW1Vqg12NnlzyDufw5IhdV6mqObE yfQl5NUfu5bUXr23mUdIjxPd+sNRf+2vZv9ZSo0IiTbbRjqxRl8GT3I8ueGi3bfsAcw/EFK4AA AA= X-Change-ID: 20260125-b4-macsmc-power-bb30389e05f1 To: Sebastian Reichel , Sven Peter , Janne Grunau , Neal Gompa , Lee Jones Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Michael Reeves , Hector Martin , Joey Gouly X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1769346855; l=3412; i=michael.reeves077@gmail.com; s=20260105; h=from:subject:message-id; bh=JgxmdDWn5iWIrp1gT9mGTXjqUcTFbbNWhNSXuLV/Edc=; b=yS64ZpLJAb/0AiUKJMZBUywrNUrPEEujJVRC9JJq7W97Mvzr4p4qqJh8Na9oefnGtAKicSQLu U/71E7LI0KHAw7RCkR9TsabO/3z0vBoDyjZR0unceYMSGNxz5TaX8Aq X-Developer-Key: i=michael.reeves077@gmail.com; a=ed25519; pk=QIrgWBGCm3LG0YYc6MLCDkwuVXLTGGooVBdWX/KhSiU= X-Endpoint-Received: by B4 Relay for michael.reeves077@gmail.com/20260105 with auth_id=591 X-Original-From: Michael Reeves Reply-To: michael.reeves077@gmail.com 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 by myself for upstream inclusion, including support for newer SMC firmwares, devices without batteries, dynamic property detection and improved state management, among other things. This series is based ontop of the current linux-next at time of writing, the exact commit hash is listed below. Tested on: Apple M3 (MacBook Air, J613) Signed-off-by: Michael Reeves --- Changes in v5: - Readd cover subject that mistakenly got dropped, apologies. - Link to v4: https://lore.kernel.org/r/20260126-b4-macsmc-power-v4-0-aa2a682ca650@gmail.com Changes in v4: - Restore Hector Martin as primary author for the series. - Restore downstream Co-developed-by and Signed-off-by tags. - Add Reviewed-by: Sven Peter . - Simplify MFD patch authorship and remove redundant tags. - Fix probe return value being overwritten by devm_work_autocancel. - Return -ENODEV in probe if neither battery nor AC adapter are found. - Add bounds check for nprops against MACSMC_MAX_BATT_PROPS. - Refactor macsmc_battery_set_charge_behaviour to remove unnecessary resets. - Improve critical_work shutdown flags and remove return. - Add comments explaining SMC key firmware history and flag meanings. - Clarify event ID descriptions and restore BSFC flag comments. - Remove redundant dev_dbg logs for missing battery or AC. - Link to v3: https://lore.kernel.org/r/20260115-b4-macsmc-power-v3-0-c236e09874be@gmail.com Changes in v3: - Rebase on top of latest linux-next - Drop charge control threshold properties. - Switch to devm_work_autocancel() for critical work. - Add platform ID table and remove MODULE_ALIAS. - Simplify property array management in struct macsmc_power. - Improve probe error handling and device pointer usage. - Minor style and indentation fixes. - Link to v2: https://lore.kernel.org/r/20260109-b4-macsmc-power-v2-0-93818f1e7d62@gmail.com Changes in v2: - Added Reviewed-by: Neal Gompa 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 --- Hector Martin (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 | 851 ++++++++++++++++++++++++++++++++++++ 5 files changed, 865 insertions(+) --- base-commit: ca3a02fda4da8e2c1cb6baee5d72352e9e2cfaea change-id: 20260125-b4-macsmc-power-bb30389e05f1 Best regards, -- Michael Reeves