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 2C7EC35975; Sun, 25 Jan 2026 23:16:58 +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=1769383019; cv=none; b=KLKI+sCvWDMai/FGb5+SwyHvFgSe0rfDlRet0+GfAd1gtmtoy6N19dhNUIwgfNMo5CqE8xIaR2odSx3bq87sp1cUYB4mBgtFXmYSkTXr79NP67kQ037XlO7dip+ksa8w5TCYgEt25VOaB2fySlAodRUVnhMWGk6kBZjwXX6GhAw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769383019; c=relaxed/simple; bh=xGdA9FNu7g2hehmu1Y6kvytIzbxTCM/CF+5TVtvEPsw=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=ZmUWVIXvY0LS44U+ptKt6vYT8g9m8hAgJyw69eFEIe90yEFujRSn2aMuDUL24VNWXLTUqPKCLBO20iiXGvULhsaiTCIWpN7TPn1AawcBtr/0VRZQj1Sd26zCCI6Upz61ftd6wJfwXlKTqYyAVg4pP8HJ+xMZ2WCxTEsi5Q6rXos= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kRAIIKf8; 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="kRAIIKf8" Received: by smtp.kernel.org (Postfix) with ESMTPS id C6694C4CEF1; Sun, 25 Jan 2026 23:16:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769383018; bh=xGdA9FNu7g2hehmu1Y6kvytIzbxTCM/CF+5TVtvEPsw=; h=From:Subject:Date:To:Cc:Reply-To:From; b=kRAIIKf8F7+Hf/Oyc7W7OWFEPuXVwC9bbZCP6AlF9z7h/oszpR6UYU59U5YW2tcFz GXAScgBnMm2UIOvEqGWe739nDLzPxyj2U8sA9NNgTQxRYUuZE1DAZq2MN+VZXgFfCW ZwN6WJr37qOTekUu2IXbD+2ZMTYHfqitC0Ch6TZ0BjyLtRCtVKtRRiNw1pKzdr66rU WgJ+la+t6S9tUWt+efthvofs0E1SHWcS0irkg1QLiplMbk51h7u5HQ7G9EHOHmuJ0W Bfb2RZToAta2z1/0nSD55jnBhcmKPzjv6UaiwIN0luBUjoy04RRt24opZJJelr3itM hsHL+n6VC8YFA== 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 BB48CE63CA8; Sun, 25 Jan 2026 23:16:58 +0000 (UTC) From: Michael Reeves via B4 Relay Subject: [PATCH v6 0/2] Add Apple Silicon SMC power driver Date: Mon, 26 Jan 2026 10:16:55 +1100 Message-Id: <20260126-b4-macsmc-power-v6-0-9861d4070f92@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=H4sIAGekdmkC/4WNywrCMBQFf6VkbSS9eVi78j/ERRLT9oJpSiJRK f1304IguHA5B2bOTJKL6BJpq5lElzFhGAuoXUXsoMfeUbwWJsBAsRokNYJ6bZO3dAoPF6kxnPH m6JjsalKsKboOn1vxfCk8YLqH+NoOsljXT0v9tLKgjGoNWjVgtZLs1HuNt70NnqytLP/4svicg VCgDtzUzbe/LMsbD/WZLu4AAAA= 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=1769383017; l=3570; i=michael.reeves077@gmail.com; s=20260105; h=from:subject:message-id; bh=xGdA9FNu7g2hehmu1Y6kvytIzbxTCM/CF+5TVtvEPsw=; b=k+GhSxjeWGPBPurpla2kQgixNOH1PggMJrkTx/SBwo2oE017phmkRmbn4Il1yGZuUmFL0TmSi XWINHl9Jow8DwCYt3T6ChPXTmXFDAx46zpkrjsDjQFPkjy1l+YkN957 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 v6: - Add FS header include for emergency_sync() - Link to v5: https://lore.kernel.org/r/20260126-b4-macsmc-power-v5-0-302462673b18@gmail.com 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 | 852 ++++++++++++++++++++++++++++++++++++ 5 files changed, 866 insertions(+) --- base-commit: ca3a02fda4da8e2c1cb6baee5d72352e9e2cfaea change-id: 20260125-b4-macsmc-power-bb30389e05f1 Best regards, -- Michael Reeves