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Sat, 03 Oct 2026 23:04:39 -0700 (PDT) Received: from [192.168.2.3] ([2403:581e:d87e:0:fc2d:ed31:e80e:412d]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a78d4a869esm5844094a91.2.2026.10.03.23.04.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Oct 2026 23:04:38 -0700 (PDT) From: James Calligeros Subject: [PATCH v2 00/21] Add speaker and headset jack support for Apple Silicon Macs Date: Sun, 04 Oct 2026 16:03:27 +1000 Message-Id: <20261004-macaudio-v2-0-7b47ed6335a8@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: 8bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/0WNQQ6CMBBFr0JmbU1bikRX3sOwqNMBxgglLRAN6 d0FNHH5kvffXyBSYIpwyRYINHNk36+gDxlga/uGBLuVQUt9kmdViM6inRx7keeo0NS5NM7Cqg+ Ban7tqVv15TjdH4Tjtt+MluPow3v/mtXm/bJa/rOzElKURiFqaUtDxbXpLD+P6DuoUkofFNBi6 LIAAAA= X-Change-ID: 20260915-macaudio-33c1c4f304da To: David Rhodes , Richard Fitzgerald , =?utf-8?q?Martin_Povi=C5=A1er?= , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , James Calligeros , Jaroslav Kysela , Takashi Iwai , Matthias Brugger , AngeloGioacchino Del Regno , Shenghao Ding , Kevin Lu , Baojun Xu , Sen Wang , Sven Peter , Janne Grunau , Neal Gompa Cc: asahi@lists.linux.dev, linux-sound@vger.kernel.org, patches@opensource.cirrus.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Hector Martin , Sasha Finkelstein X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=8568; i=jcalligeros99@gmail.com; h=from:subject:message-id; bh=InItdihPvue7KhBnmJaCghTk7rJnuaesPMmkASkU+Ns=; b=kA0DAAoW1DYy0VH3eWAByyZiAGrB7GejxJ/BY+XQc5ki3nai1coeDKk54HL6FwSs+x8HSeZoG oiRBAAWCgA5FiEEsIISSJsyBtmPFHm91DYy0VH3eWAFAmrB7GcbFIAAAAAABAAObWFudTIsMi41 KzEuMTIsMywyAAoJENQ2MtFR93lgTzcA/07o9jzZVCe7oiVoo4GLoAlryGIXkgrMlK/oeh3ub7r aAP41EmVnhb+0m1VzqLvSeTfgVll3CIMzOx5GM9pqdyrvBw== X-Developer-Key: i=jcalligeros99@gmail.com; a=openpgp; fpr=B08212489B3206D98F1479BDD43632D151F77960 Hi folks, This series adds the machine driver and related bindings for the primary audio subsystem on Apple Silicon Macs. The macaudio machine driver is based on an RFC sent many years ago by Martin Povišer[1]. The driver uses the DPCM model to dynamically glue a backend DAI (combination of MCA ports and codecs) to a frontend PCM. While this theoretically allows us to route any backend to any frontend, this is not used in practice; the "Primary" frontend is always used for the headset codec and the "Secondary" is always used for the speakers. The audio subsystem on Apple Silicon Macs is rather complicated and the speaker arrangement is highly variable; some machines have a single mono woofer while others pull together multiple woofers and tweeters into a single stereo pair. Every machine also includes a headset jack, and some also have their own builtin microphones which are handled by a separate coprocessor with its own driver. Many functions which are handled by firmware on other platforms must be handled by the kernel or by userspace. Most notably, speaker protection is handled by speakersafetyd[2], a userspace daemon. Speaker protection is handled in userspace due to the expensive floating point calculations and amount of per-machine configuration data required. The machine driver facilitates this by exposing a capture PCM from which the voltage and current across each speaker's voice coil can be read. Given that there are absolutely no hardware or firmware level failsafes preventing permanent damage to the fragile speakers found on these machines, the driver also implements a failsafe that will significantly attenuate and lock the gains of every connected speaker unless speakersafetyd is running. Version 2 of this series drops numerous fixes and semi-related patches that are not strictly necessary for the machine driver to function correctly. These will be resubmitted at a later date. Adding the required Devicetree updates for M3 series devices would have bloated this series to an unreasonable size as they are still missing most prerequisite hardware nodes. They will be added in a future series. Regards, James [1] https://lore.kernel.org/asahi/20220606191910.16580-1-povik+lin@cutebit.org/ [2] https://github.com/AsahiLinux/speakersafetyd --- Changes in v2: - Drop patches that are only tangentially related (will be submitted later) - Drop wildcard-matching API for kctls - Relabel J473 sound model to Mac mini - Align Devicetree changes with upstream bindings - Relax Cirrus CS42L42 required properties to keep DT style checker happy - Define missing properties in CS42L{42,84} bindings - Fix mistyped DT properties - Improve macaudio DT binding description - Drop generic fallback compatible for apple,macaudio - Drop now-redundant descriptions from other compatibles - Constrain DAI link link-name property with an enum of valid values - Drop MCA node from macaudio binding example - Fix heading comment style in macaudio - Drop obsolete module parameter - Replace string functions with safer variants - Replace dropped wildcard API with searching for full kctl name - Rework idle props parsing to better surface errors/invalid Devicetree entries - Add additional locking to backend setup - Take controls_rwsem when safety functions are called from workqueues - Replace all mutex{,un}lock calls with guard/scoped_guard - Fix incorrect amp gain value for j37x config struct - static const-ify all config structs - Cancel control lock update workqueue on teardown - Drop unused DAPM widget - Fix commented-out safe volume calculations - Drop speaker lock kcontrol ownership checks and related core API extension - Link to v1: https://patch.msgid.link/20260920-macaudio-v1-0-741cc20a74e5@gmail.com To: David Rhodes To: Richard Fitzgerald To: Martin Povišer To: Liam Girdwood To: Mark Brown To: Rob Herring To: Krzysztof Kozlowski To: Conor Dooley To: James Calligeros To: Jaroslav Kysela To: Takashi Iwai To: Matthias Brugger To: AngeloGioacchino Del Regno To: Shenghao Ding To: Kevin Lu To: Baojun Xu To: Sen Wang To: Sven Peter To: Janne Grunau To: Neal Gompa Cc: asahi@lists.linux.dev Cc: linux-sound@vger.kernel.org Cc: patches@opensource.cirrus.com Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org --- James Calligeros (16): ASoC: dt-bindings: cs42l84: Document sound-name-prefix property ASoC: dt-bindings: cs42l42: Do not require chip power supplies ASoC: dt-bindings: cs42l42: Document #sound-dai-cells property ASoC: dt-bindings: cs42l42: Document sound-name-prefix property arm64: dts: apple: t8103-j274: Add speaker/headset jack nodes arm64: dts: apple: t8103-j313: Add speaker/headset jack nodes arm64: dts: apple: t8103-j293: Add speaker/headset jack nodes arm64: dts: apple: t8103-j45x: Add headset jack nodes arm64: dts: apple: t8112-j413: Add speaker/headset jack nodes arm64: dts: apple: t8112-j415: Add speaker/headset jack nodes arm64: dts: apple: t8112-j473: Add speaker/headset jack nodes arm64: dts: apple: t8112-j493: Add speaker/headset jack nodes arm64: dts: apple: t600x-j31x: Add speaker/headset jack nodes arm64: dts: apple: t600x-j375: Add speaker/headset jack nodes arm64: dts: apple: t602x-j41x: Add speaker/headset jack nodes arm64: dts: apple: t602x-j47x: Add speaker/headset jack nodes Martin Povišer (5): ASoC: dt-bindings: Add binding for Apple Silicon Mac audio ASoC: ops: Introduce 'snd_soc_deactivate_kctl' ASoC: ops: Introduce 'soc_set_enum_kctl' ASoC: card: Let 'fixup_controls' return errors ASoC: apple: Add macaudio machine driver .../bindings/sound/apple,macaudio.yaml | 210 +++ .../bindings/sound/cirrus,cs42l42.yaml | 11 +- .../bindings/sound/cirrus,cs42l84.yaml | 3 + .../arm64/boot/dts/apple/t6000-j314s.dts | 5 + .../arm64/boot/dts/apple/t6000-j316s.dts | 5 + .../arm64/boot/dts/apple/t6001-j314c.dts | 5 + .../arm64/boot/dts/apple/t6001-j316c.dts | 5 + .../arm64/boot/dts/apple/t6001-j375c.dts | 5 + .../arm64/boot/dts/apple/t6002-j375d.dts | 5 + .../boot/dts/apple/t600x-j314-j316.dtsi | 135 ++ .../arm64/boot/dts/apple/t600x-j375.dtsi | 65 + .../arm64/boot/dts/apple/t6020-j414s.dts | 5 + .../arm64/boot/dts/apple/t6020-j416s.dts | 5 + .../arm64/boot/dts/apple/t6020-j474s.dts | 5 + .../arm64/boot/dts/apple/t6021-j414c.dts | 5 + .../arm64/boot/dts/apple/t6021-j416c.dts | 5 + .../arm64/boot/dts/apple/t6021-j475c.dts | 5 + .../arm64/boot/dts/apple/t6022-j475d.dts | 5 + .../boot/dts/apple/t602x-j414-j416.dtsi | 35 + .../boot/dts/apple/t602x-j474-j475.dtsi | 10 + arch/arm64/boot/dts/apple/t8103-j274.dts | 67 + arch/arm64/boot/dts/apple/t8103-j293.dts | 111 ++ arch/arm64/boot/dts/apple/t8103-j313.dts | 82 ++ arch/arm64/boot/dts/apple/t8103-j456.dts | 38 + arch/arm64/boot/dts/apple/t8103-j457.dts | 38 + arch/arm64/boot/dts/apple/t8112-j413.dts | 108 ++ arch/arm64/boot/dts/apple/t8112-j415.dts | 132 ++ arch/arm64/boot/dts/apple/t8112-j473.dts | 62 + arch/arm64/boot/dts/apple/t8112-j493.dts | 108 ++ include/sound/soc-card.h | 2 +- include/sound/soc.h | 6 +- sound/soc/apple/Kconfig | 18 + sound/soc/apple/Makefile | 4 + sound/soc/apple/macaudio.c | 1699 +++++++++++++++++++++++++ .../soc/mediatek/mt8188/mt8188-mt6359.c | 4 +- sound/soc/soc-card.c | 12 +- sound/soc/soc-core.c | 5 +- sound/soc/soc-ops.c | 103 ++ 38 files changed, 3121 insertions(+), 12 deletions(-) --- base-commit: 74612d0b448fe745e80cda87fe49ac3c102ccc1f change-id: 20260915-macaudio-33c1c4f304da Best regards, -- James Calligeros