From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout02.posteo.de (mout02.posteo.de [185.67.36.66]) (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 15FEE2D94AB for ; Sat, 18 Jul 2026 15:33:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.67.36.66 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784388799; cv=none; b=RjBOQ9giHdjo9/4ESXNYm1bl9tDk/HhBlvIVrAQrSVqst9dMCNmSBQPpSjL2OREYht//dfSVNfCIZ3UxhQ0VFj4Iu+09P/GoUZu4TWPR4vXSFzlqlyrsvYJbv97iGQY5JdLHhIwyu/IBOUXKrq/NIsJZeBEntjGDUzWf8PJkGlY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784388799; c=relaxed/simple; bh=bKY07ftKDII//vXG3NnfRNSSxrRQG80okK3etiFwgl8=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=O2IEYxNa5wBSQ8fYSy/vpLDktQxu0BXUDtWC7FEvwIDfps3CtaAmZJ3YBJz48nqrHMUbPLERb8c+MY4aHzK7Mjt9k07fmY9vzcNUrXtyIBqwv2PlgZpgpFeeYOcMToBHJYtyCcKLuI/7sW3B+GpwRhAS7KSi91xFIQ/D6mi8qTs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=posteo.de; spf=pass smtp.mailfrom=posteo.de; dkim=pass (2048-bit key) header.d=posteo.de header.i=@posteo.de header.b=HeOgEsZ9; arc=none smtp.client-ip=185.67.36.66 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=posteo.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=posteo.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=posteo.de header.i=@posteo.de header.b="HeOgEsZ9" Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id AB1C3240104 for ; Sat, 18 Jul 2026 17:33:10 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=posteo.de; s=1984.8680eb; t=1784388790; bh=ZQncX2GE337TkaMVEPbAEggysnm2USQhF68U4MLgz3A=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:To:Cc:Autocrypt:OpenPGP:From; b=HeOgEsZ9E5xliKZ5YO+8D6ZW1FJlvTWy46FkXHwGjysmYt4IqsKZ5rgPeT8fyIbbo Et+9aj4C/JFxT4b4NgVoAsQaMnCJwWhxvb2ZGM3JIJIQV/3YDAOFvypIEOZOdOvoLN aGEGJXAvBZV5dClgh4FrkzvU9UJ5AvtGwg3mKV0XoNy/MGdnz1c8G2t9yI3AVuIhOP yWfTxFvu36ddBnELxbeXzoj/Ji4xxHCiQNxjuo5uk2VAmueYg2+0Tggghlpv7Aoqhr J/oAot+XQlNKJY/0keyMyJq9RDtmXQXfPnQgVXenkwqvmTIp8AzznqkZYvoZ8liUs6 qo/xcQNi1mkig== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4h2W4z2tZnz6tvm; Sat, 18 Jul 2026 17:33:07 +0200 (CEST) From: Markus Probst Subject: [PATCH v16 0/3] rust: add basic serial device bus abstractions Date: Sat, 18 Jul 2026 15:33:09 +0000 Message-Id: <20260718-rust_serdev-v16-0-5809384d2e1b@posteo.de> Precedence: bulk X-Mailing-List: linux-pm@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=H4sIAAAAAAAC/33T3U7eMAwG4Fv51ON1i504PxztPiY0NYkDPeArt KViQtz7XNhEmkqcNVEey0lfv3YLzyMv3c3ltZt5G5dxusoC7LdLl+6H6x33Y5aNDhUSILh+fl7 W36Iybz0zGQ8clKfUiXicuYwv7+V+3cr6flzWaf7zXn2DffdfHVSHOhv0qmdjrCFnnUX4+TgtK 0/fM3d7nQ3/W6u0skeLuw0RdTQYkai1urKgj1aLTWHQQ0EwxZXWmk9rAI7WiPWGOFiVrEXXWqp se18SS459HBRBKLq1trbHN9+sWHDaBZ+JYThZV9twtE6syj4kFyBS8q31n5Z007MXi0OgAnlAH E73DV/YILb4SCWlaEI69QzqCwzSc28pQ6YcvbPppKHWzW+CPVuZ2bNcXKtyyhZU4ZKINHpPlzZ KlRK9j4AnXcXLyemj3vOFyUjdmDxrddKm1tToPWHRcKYUtPR2SidQrX2j94yh8pyRLSc4zMXbx 7DO/PQsI79+TGwXh4X7ND08jOvNJc/jxrMsZ/5RffdyeB2vd1Lj7S8sUbRJPgQAAA== X-Change-ID: 20251217-rust_serdev-ee5481e9085c To: Rob Herring , Greg Kroah-Hartman , Jiri Slaby , Miguel Ojeda , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Kari Argillander , "Rafael J. Wysocki" , Viresh Kumar , Boqun Feng , David Airlie , Simona Vetter , Daniel Almeida , Tamir Duberstein , Alexandre Courbot , =?utf-8?q?Onur_=C3=96zkan?= , Boqun Feng Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-pm@vger.kernel.org, driver-core@lists.linux.dev, dri-devel@lists.freedesktop.org, Markus Probst X-Developer-Signature: v=1; a=openpgp-sha256; l=5213; i=markus.probst@posteo.de; h=from:subject:message-id; bh=bKY07ftKDII//vXG3NnfRNSSxrRQG80okK3etiFwgl8=; b=owEBiQJ2/ZANAwAIATR2H/jnrUPSAcsmYgBqW5yyAW+LfgN1Rub0iDWzPt654gDiV1xHOtAm+ w2GKZDQjC6JAk8EAAEIADkWIQSCdBjE9KxY53IwxHM0dh/4561D0gUCalucshsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMiwyLDIACgkQNHYf+OetQ9KS+Q//Y0ylnIy0/yuAZ4Yg6wtUE4oZ0BdG+jq VHWasFCBCeH1DQi4PfanbgGz1FS49HyUYetHFh0AbWcVQxus6AA5As8rYktRYVUe7kAzloXNIke kUDfrieX8p8v3tSPZlwdUPK2FE0K0DIQU2/GQXCbQYFmosGDLb0omaDKQo5WGTSjnVafY93YiVl WXdc7jHSox3dam0/kzl2LxmpBYIszTvhsJyylv+nxsJi9iDw56JaOlSL8DgwMF+pTzPmVlScfKG jWsPXM3MuWHvnk7z03iXJ0y4dzEq5F5d3EiVff4PjjXn4npTBDHIJCSyUceAFN902X/dGT54r/q gbtSdGD5P2QkzraG2EhIzVjhqReI5dmQa42oN3YdUdB0ZurhGVGCW4HVHpNvA/HuLkQHjuqrqQ4 9cYRncA5XZicZ6FsM3xeNfuiG3W7RyfJf445kE9BoJK5eNjgazpI8JiKaSqv3cbv6cAOH4E9f5C KI+i0fAulfvOOZx4i0JnH8LSMw+Te9NVgjHk0IMtVo44+RAaws0mLEeWk+P6I0+F6PqU48NFOZH taioi8zwAueo+SVucC+3VKXecZB5c8v3BM9ATyBLTmlDKXl4PAi75TommTQ6DI4v/0Gof2CKZZK DOJ9Nwf+S/BDw+YTdeEbAXY7RqSeFLNItR3JW6KcOjr4vhVaUKzc= X-Developer-Key: i=markus.probst@posteo.de; a=openpgp; fpr=827418C4F4AC58E77230C47334761FF8E7AD43D2 Autocrypt: addr=markus.probst@posteo.de; prefer-encrypt=mutual; keydata=xsFNBGiDvXgBEADAXUceKafpl46S35UmDh2wRvvx+UfZbcTjeQOlSwKP7YVJ4JOZrVs93qReNLkO WguIqPBxR9blQ4nyYrqSCV+MMw/3ifyXIm6Pw2YRUDg+WTEOjTixRCoWDgUj1nOsvJ9tVAm76Ww+ /pAnepVRafMID0rqEfD9oGv1YrfpeFJhyE2zUw3SyyNLIKWD6QeLRhKQRbSnsXhGLFBXCqt9k5JA RhgQof9zvztcCVlT5KVvuyfC4H+HzeGmu9201BVyihJwKdcKPq+n/aY5FUVxNTgtI9f8wIbmfAja oT1pjXSp+dszakA98fhONM98pOq723o/1ZGMZukyXFfsDGtA3BB79HoopHKujLGWAGskzClwTjRQ xBqxh/U/lL1pc+0xPWikTNCmtziCOvv0KA0arDOMQlyFvImzX6oGVgE4ksKQYbMZ3Ikw6L1Rv1J+ FvN0aNwOKgL2ztBRYscUGcQvA0Zo1fGCAn/BLEJvQYShWKeKqjyncVGoXFsz2AcuFKe1pwETSsN6 OZncjy32e4ktgs07cWBfx0v62b8md36jau+B6RVnnodaA8++oXl3FRwiEW8XfXWIjy4umIv93tb8 8ekYsfOfWkTSewZYXGoqe4RtK80ulMHb/dh2FZQIFyRdN4HOmB4FYO5sEYFr9YjHLmDkrUgNodJC XCeMe4BO4iaxUQARAQABzRdtYXJrdXMucHJvYnN0QHBvc3Rlby5kZcLBkQQTAQgAOxYhBIJ0GMT0 rFjncjDEczR2H/jnrUPSBQJog714AhsDBQsJCAcCAiICBhUKCQgLAgQWAgMBAh4HAheAAAoJEDR2 H/jnrUPSgdkQAISaTk2D345ehXEkn5z2yUEjaVjHIE7ziqRaOgn/QanCgeTUinIv6L6QXUFvvIfH 1OLPwQ1hfvEg9NnNLyFezWSy6jvoVBTIPqicD/r3FkithnQ1IDkdSjrarPMxJkvuh3l7XZHo49GV HQ8i5zh5w4YISrcEtE99lJisvni2Jqx7we5tey9voQFDyM8jxlSWv3pmoUTCtBkX/eKHJXosgsuS B4TGDCVPOjla/emI5c9MhMG7O4WEEmoSdPbmraPw66YZD6uLyhV4DPHbiDWRzXWnClHSyjB9rky9 lausFxogvu4l9H+KDsXIadNDWdLdu1/enS/wDd9zh5S78rY2jeXaG4mnf4seEKamZ7KQ6FIHrcyP ezdDzssPQcTQcGRMQzCn6wP3tlGk7rsfmyHMlFqdRoNNv+ZER/OkmZFPW655zRfbMi0vtrqK2Awm 9ggobb1oktfd9PPNXMUY+DNVlgR2G7jLnenSoQausLUm0pHoNE8TWFv851Y6SOYnvn488sP1Tki5 F3rKwclawQFHUXTCQw+QSh9ay8xgnNZfH+u9NY7w3gPoeKBOAFcBc2BtzcgekeWS8qgEmm2/oNFV G0ivPQbRx8FjRKbuF7g3YhgNZZ0ac8FneuUtJ2PkSIFTZhaAiC0utvxk0ndmWFiW4acEkMZGrLaM L2zWNjrqwsD2zsFNBGiDvXgBEADCXQy1n7wjRxG12DOVADawjghKcG+5LtEf31WftHKLFbp/HArj BhkT6mj+CCI1ClqY+FYU5CK/s0ScMfLxRGLZ0Ktzawb78vOgBVFT3yB1yWBTewsAXdqNqRooaUNo 8cG/NNJLjhccH/7PO/FWX5qftOVUJ/AIsAhKQJ18Tc8Ik73v427EDxuKb9mTAnYQFA3Ev3hAiVbO 6Rv39amVOfJ8sqwiSUGidj2Fctg2aB5JbeMln0KCUbTD1LhEFepeKypfofAXQbGwaCjAhmkWy/q3 IT1mUrPxOngbxdRoOx1tGUC0HCMUW1sFaJgQPMmDcR0JGPOpgsKnitsSnN7ShcCr1buel7vLnUMD +TAZ5opdoF6HjAvAnBQaijtK6minkrM0seNXnCg0KkV8xhMNa6zCs1rq4GgjNLJue2EmuyHooHA4 7JMoLVHcxVeuNTp6K2+XRx0Pk4e2Lj8IVy9yEYyrywEOC5XRW37KJjsiOAsumi1rkvM7QREWgUDe Xs0+RpxI3QrrANh71fLMRo7LKRF3Gvw13NVCCC9ea20P4PwhgWKStkwO2NO+YJsAoS1QycMi/vKu 0EHhknYXamaSV50oZzHKmX56vEeJHTcngrM8R1SwJCYopCx9gkz90bTVYlitJa5hloWTYeMD7FNj Y6jfVSzgM/K4gMgUNDW/PPGeMwARAQABwsF2BBgBCAAgFiEEgnQYxPSsWOdyMMRzNHYf+OetQ9IF AmiDvXgCGwwACgkQNHYf+OetQ9LHDBAAhk+ab8+WrbS/b1/gYW3q1KDiXU719nCtfkUVXKidW5Ec Idlr5HGt8ilLoxSWT2Zi368iHCXS0WenGgPwlv8ifvB7TOZiiTDZROZkXjEBmU4nYjJ7GymawpWv oQwjMsPuq6ysbzWtOZ7eILx7cI0FjQeJ/Q2baRJub0uAZNwBOxCkAS6lpk5Fntd2u8CWmDQo4SYp xeuQ+pwkp0yEP30RhN2BO2DXiBEGSZSYh+ioGbCHQPIV3iVj0h6lcCPOqopZqyeCfigeacBI0nvN jHWz/spzF3+4OS+3RJvoHtAQmProxyGib8iVsTxgZO3UUi4TSODeEt0i0kHSPY4sCciOyXfAyYoD DFqhRjOEwBBxhr+scU4C1T2AflozvDwq3VSONjrKJUkhd8+WsdXxMdPFgBQuiKKwUy11mz6KQfcR wmDehF3UaUoxa+YIhWPbKmycxuX/D8SvnqavzAeAL1OcRbEI/HsoroVlEFbBRNBZLJUlnTPs8ZcU 4+8rq5YX1GUrJL3jf6SAfSgO7UdkEET3PdcKFYtS+ruV1Cp5V0q4kCfI5jk25iiz8grM2wOzVSsc l1mEkhiEPH87HP0whhb544iioSnumd3HJKL7dzhRegsMizatupp8D65A2JziW0WKopa1iw9fti3A aBeNN4ijKZchBXHPgVx+YtWRHfcm4l8= OpenPGP: url=https://posteo.de/keys/markus.probst@posteo.de.asc; preference=encrypt This patch series adds the serdev device bus rust abstraction into the kernel. This abstraction will be used by a driver, which targets the MCU devices in Synology devices. Kari Argillander also messaged me, stating that he wants to write a watchdog driver with this abstraction (needing initial device data). This series depends on [1]. [1] https://lore.kernel.org/rust-for-linux/20260530132736.3298549-1-dakr@kernel.org/ Signed-off-by: Markus Probst --- Changes in v16: - use `Jiffies` instead of `impl Into`, until `Jiffies` is a newtype - Link to v15: https://patch.msgid.link/20260718-rust_serdev-v15-0-208ed2e6ec15@posteo.de Changes in v15: - fix documentation typo - add documentation for `PrivateData::active` - adding missing `#[inline]` attributes - replace `serdev::Timeout` with the use of `impl Into` - This replaces https://lore.kernel.org/rust-for-linux/20260718-rust_serdev_fixes-v1-0-35433b6dce0f@posteo.de/ - Link to v14: https://patch.msgid.link/20260715-rust_serdev-v14-0-b4ed5c93606f@posteo.de Changes in v14: - fix issues reported by Sashiko: - fix missing Sync - fix write buffers allowed with data.len() > i32::MAX - fix sample driver possibly stalling on full tx buffer - Link to v13: https://patch.msgid.link/20260712-rust_serdev-v13-0-2c4060bc8e30@posteo.de Changes in v13: - Added Acked-by trailer from Rob. Consider this a RESEND. - Link to v12: https://patch.msgid.link/20260603-rust_serdev-v12-0-3400ffb88b12@posteo.de Changes in v12: - fix CoreInternal instead of BoundInternal - Link to v11: https://patch.msgid.link/20260531-rust_serdev-v11-0-dee8e0d830f1@posteo.de Changes in v11: - redo changes from v9 with the following fixes: - fix memory leak on probe failure - fix possible access of dropped drvdata from receive_buf - Link to v10: https://patch.msgid.link/20260530-rust_serdev-v10-0-65d1d5db876c@posteo.de Changes in v10: - revert everything from v9, except BoundInternal - use mutex to ensure receive_buf won't be called on a dropped drvdata. - Link to v9: https://patch.msgid.link/20260530-rust_serdev-v9-0-f8b5fccb49c3@posteo.de Changes in v9: - make use of BoundInternal - use PrivateData wrapper and drop rust_private_data field - use non-devm version of serdev_device_open - Link to v8: https://patch.msgid.link/20260530-rust_serdev-v8-0-2a95f1da22a7@posteo.de Changes in v8: - adapted to driver-lifetime v5 patch series - add MAINTAINERS file patch - Link to v7: https://patch.msgid.link/20260429-rust_serdev-v7-0-0d89c791b5c8@posteo.de Changes in v7: - adapted to driver-lifetime patch series - Link to v6: https://patch.msgid.link/20260427-rust_serdev-v6-0-173798d5e1a3@posteo.de Changes in v6: - rebased onto v7.1-rc1 - Link to v5: https://patch.msgid.link/20260420-rust_serdev-v5-0-57e8ba0519f3@posteo.de Changes in v5: - fix typo in documentation - Link to v4: https://lore.kernel.org/r/20260411-rust_serdev-v4-0-845e960c6627@posteo.de Changes in v4: - fixed not selecting rust serdev abstraction in sample - Link to v3: https://lore.kernel.org/r/20260313-rust_serdev-v3-0-c9a3af214f7f@posteo.de Changes in v3: - fix vertical import style - add Kconfig entry for the rust abstraction - fix documentation in include/linux/serdev.h - rename private_data to rust_private_data - fix `complete_all` <-> `wait_for_completion` typo - move drvdata_borrow call after the completion - Link to v2: https://lore.kernel.org/r/20260306-rust_serdev-v2-0-e9b23b42b255@posteo.de Changes in v2: - fix documentation in `serdev::Driver::write` and `serdev::Driver::write_all` - remove use of `dev_info` in probe from the sample - remove `properties_parse` from the sample - add optional `baudrate` property to the sample - remove 1. patch - remove `TryFrom<&device::Device> for &serdev::Device` implementation - fix import style - add patch to return reference in `devres::register` to fix safety issue - add patch to add private data to serdev_device, to fix `Device.drvdata()` from failing - simplify abstraction by removing ability to receive the initial transmission. It may be added later in a separate patch series if needed. - Link to v1: https://lore.kernel.org/r/20251220-rust_serdev-v1-0-e44645767621@posteo.de --- Markus Probst (3): rust: add basic serial device bus abstractions samples: rust: add Rust serial device bus sample device driver MAINTAINERS: serdev: Add self for serdev MAINTAINERS | 5 +- drivers/tty/serdev/Kconfig | 7 + rust/bindings/bindings_helper.h | 1 + rust/helpers/helpers.c | 1 + rust/helpers/serdev.c | 22 ++ rust/kernel/lib.rs | 2 + rust/kernel/serdev.rs | 605 +++++++++++++++++++++++++++++++++++++ samples/rust/Kconfig | 11 + samples/rust/Makefile | 1 + samples/rust/rust_driver_serdev.rs | 90 ++++++ 10 files changed, 744 insertions(+), 1 deletion(-) --- base-commit: 4e63c0582e2aef7284a2cc7c62215f245003e775 change-id: 20251217-rust_serdev-ee5481e9085c