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[2403:580a:80ed:0:4835:5a07:49e7:f115]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b472d76a430sm10286316a12.43.2025.08.19.04.48.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Aug 2025 04:48:06 -0700 (PDT) From: James Calligeros Subject: [PATCH 0/8] mfd: macsmc: add rtc, hwmon and hid subdevices Date: Tue, 19 Aug 2025 21:47:52 +1000 Message-Id: <20250819-macsmc-subdevs-v1-0-57df6c3e5f19@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=H4sIAGhkpGgC/x3MPQqAMAxA4atIZgtpRSteRRw0jZrBHxoUQXp3i +M3vPeCchRW6IoXIt+icuwZtiyA1nFf2EjIBoeuxtY2ZhtJNzJ6TYFvNa3HyhFaH5AgR2fkWZ5 /2A8pfUSAoVdgAAAA X-Change-ID: 20250816-macsmc-subdevs-87032c017d0c To: Sven Peter , Janne Grunau , Alyssa Rosenzweig , Neal Gompa , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alexandre Belloni , Jean Delvare , Guenter Roeck , Dmitry Torokhov Cc: asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rtc@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-input@vger.kernel.org, James Calligeros , Mark Kettenis , Hector Martin X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=4439; i=jcalligeros99@gmail.com; h=from:subject:message-id; bh=7ZN9mquuvmQGhl/5cAieHoqLnblhiM9pvWAqAoyRNDU=; b=owGbwMvMwCV2xczoYuD3ygTG02pJDBlLUvIqW5TYMuxC+++cFnu1f/ZGP9Mf0p8qr9deu7V4e rnMe6abHaUsDGJcDLJiiiwbmoQ8Zhux3ewXqdwLM4eVCWQIAxenAEwkRpaR4UURzySBlincJoWh R9jTOSdsW5V8vn/eA7aJYZ0PeO6ohTAy/Pxw89OhxYoaU2boSRx6daOlcFV1cd+FzxpbulfdsZJ /zAMA X-Developer-Key: i=jcalligeros99@gmail.com; a=openpgp; fpr=B08212489B3206D98F1479BDD43632D151F77960 Hi all, This series adds support for the remaining SMC subdevices. These are the RTC, hwmon, and HID devices. They are being submitted together as the RTC and hwmon drivers both require changes to the SMC DT schema. The RTC driver is responsible for getting and setting the system clock, and requires an NVMEM cell. This series replaces Sven's original RTC driver submission [1]. The hwmon function is an interesting one. While each Apple Silicon device exposes pretty similar sets of sensors, these all seem to be paired to different SMC keys in the firmware interface. This is true even when the sensors are on the SoC. For example, an M1 MacBook Pro will use different keys to access the LITTLE core temperature sensors to an M1 Mac mini. This necessitates describing which keys correspond to which sensors for each device individually, and populating the hwmon structs at runtime. We do this with a node in the device tree. This series includes only the keys for sensors which we know to be common to all devices. The SMC is also responsible for monitoring and controlling fan speeds on systems with fans, which we expose via the hwmon driver. The SMC also handles the hardware power button and lid switch. Power button presses and lid opening/closing are emitted as HID events, so we add a HID subdevice to handle them. Note that this series is based on a branch with three additional commits applied to add the parent SMC nodes to the relevant Devicetrees. This was done to silence build errors. The series applies cleanly to 6.17-rc1. Regards, James [1] https://lore.kernel.org/asahi/CAEg-Je84XxLWH7vznQmPRfjf6GxWOu75ZetwN7AdseAwfMLLrQ@mail.gmail.com/T/#t Signed-off-by: James Calligeros --- Hector Martin (2): rtc: Add new rtc-macsmc driver for Apple Silicon Macs input: macsmc-hid: New driver to handle the Apple Mac SMC buttons/lid James Calligeros (4): dt-bindings: hwmon: add Apple System Management Controller hwmon schema hwmon: Add Apple Silicon SMC hwmon driver arm64: dts: apple: add common hwmon sensors and fans arm64: dts: apple: t8103, t600x, t8112: add common hwmon nodes to devices Sven Peter (2): dt-bindings: rtc: Add Apple SMC RTC arm64: dts: apple: t8103,t600x,t8112: Add SMC RTC node .../bindings/hwmon/apple,smc-hwmon.yaml | 148 +++++ .../bindings/mfd/apple,smc.yaml | 54 ++ .../bindings/rtc/apple,smc-rtc.yaml | 35 + MAINTAINERS | 5 + .../boot/dts/apple/hwmon-common.dtsi | 46 ++ .../boot/dts/apple/hwmon-fan-dual.dtsi | 27 + arch/arm64/boot/dts/apple/hwmon-fan.dtsi | 21 + .../boot/dts/apple/hwmon-laptop.dtsi | 43 ++ .../boot/dts/apple/hwmon-mac-mini.dtsi | 19 + .../arm64/boot/dts/apple/t6001-j375c.dts | 2 + .../arm64/boot/dts/apple/t6002-j375d.dts | 2 + .../arm64/boot/dts/apple/t600x-die0.dtsi | 6 + .../boot/dts/apple/t600x-j314-j316.dtsi | 4 + .../arm64/boot/dts/apple/t600x-j375.dtsi | 2 + arch/arm64/boot/dts/apple/t8103-j274.dts | 2 + arch/arm64/boot/dts/apple/t8103-j293.dts | 3 + arch/arm64/boot/dts/apple/t8103-j313.dts | 2 + arch/arm64/boot/dts/apple/t8103-j456.dts | 2 + arch/arm64/boot/dts/apple/t8103-j457.dts | 2 + .../arm64/boot/dts/apple/t8103-jxxx.dtsi | 2 + arch/arm64/boot/dts/apple/t8103.dtsi | 6 + arch/arm64/boot/dts/apple/t8112-j413.dts | 2 + arch/arm64/boot/dts/apple/t8112-j473.dts | 2 + arch/arm64/boot/dts/apple/t8112-j493.dts | 3 + .../arm64/boot/dts/apple/t8112-jxxx.dtsi | 2 + arch/arm64/boot/dts/apple/t8112.dtsi | 6 + drivers/hwmon/Kconfig | 12 + drivers/hwmon/Makefile | 1 + drivers/hwmon/macsmc_hwmon.c | 858 +++++++++++++++++++++++++ drivers/input/misc/Kconfig | 11 + drivers/input/misc/Makefile | 1 + drivers/input/misc/macsmc-hid.c | 210 ++++++ drivers/mfd/macsmc.c | 3 + drivers/rtc/Kconfig | 11 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-macsmc.c | 141 ++++ 36 files changed, 1697 insertions(+) --- base-commit: 876d6a70b24869f96ebc8672caf86cb4bae72927 change-id: 20250816-macsmc-subdevs-87032c017d0c Best regards, -- James Calligeros