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 89BEE3E92B4 for ; Mon, 27 Apr 2026 17:59:44 +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=1777312786; cv=none; b=DRu2dvDu5KBC+TCvViX80SpI22r4/xyXs5nC/tvTFvHg/IlK9qenXR2aTJIC+7E4xbwurfOVOwoW7c8fBqqvjVur26omsM+U7xpyMeFdUNNT9O0OlJF88xQ6PEOZReuCX+E5dIQfzgpunDvmnjj4l2wCoY/mnMEXjIDehGarqWg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777312786; c=relaxed/simple; bh=1FxTiyEveIK25RSRnGUxeXnSKqLuzc8pb+/y+E8RvrQ=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=ElL1fyYIqeZXJWVTvJyq2nwn9i/njDZau2aKWYNvs5DnBCSb5xUYb3KxVVRR1jstZusOq+Cnc4QMrDU9uwEm2XuVtOIdbBC1UCijaG71/nBaVOtBy33VTW931ptQelpBlKYPdW/3iDtYg0bjkjrJgpuCrSKVoBrWJeTkCDiY7/k= 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=oewXj96A; 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="oewXj96A" Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id 1316D240106 for ; Mon, 27 Apr 2026 19:59:43 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=posteo.de; s=2017; t=1777312783; bh=9GkKoo4K3wAZMxNnmcP2i/6Czl8Ff03bFuwovnivRhE=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:To:Cc:Autocrypt:OpenPGP:From; b=oewXj96AS2/14gVvaKPnWsEHP1A28PevVquomdx7eEuHPQLSCW410OM6yDMx/obQW QiaknPAwfuujBHj1KEE9l7XpxuU78jsFbbUZX4bJQlV9rH27qIm4A6sYy8ru9UW5gN xZnPwloB4A12EgC0RN/7CEqqL3Fr6U4r6xezPMSI0jUfrj4IaJYLAwPxc0qoFN8Z0y UMW5Yxu8KD9yv3f2/4Sib0yZwjp/19K85LQhU84/Qb300mNOpfDhEiCjeu4MLKTHP3 z9XJWZNxgRVGd9m7285X0p9TkmxUBUVH+dS7MO9F3HuAV3Py7sz/rPjhCdKTU9cL/C PHr81Fx2bhUdg== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4g4BCv5Wysz9rxS; Mon, 27 Apr 2026 19:59:39 +0200 (CEST) From: Markus Probst Subject: [PATCH v14 0/3] rust: leds: add led classdev abstractions Date: Mon, 27 Apr 2026 17:59:42 +0000 Message-Id: <20260427-rust_leds-v14-0-4f4b17e5d516@posteo.de> Precedence: bulk X-Mailing-List: rust-for-linux@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=H4sIAASk72kC/2XR3WoDIRAF4FdZvK7BUWfVXPU9SimuP43QZFPdL C0h716TEOJ2b4QZ5jsg50xKyCkUsu3OJIc5lTQe6gDypSNuZw+fgSZfF4QzjgAgaT6V6eMr+EK tQROV41FFQ+r9MYeYfm5hb+913qUyjfn3lj3r6/aRgk3KrCmj3lgJUSCi0K/HsUxh3PhArimza aVppalS9w7QWzCsF/8lsAftGbC+pcCqDcwC9lJrGc3KwtPWZ2GhWtTowekhcOZWlrdWLSyvNvo BQUtQg8KVFU8r+OK7IKrlYNEYhwP30NrLvYAcvk+1xOneAhlsCdSN+32att2sNkCzg3p8+QOp7 SSS+QEAAA== X-Change-ID: 20251114-rust_leds-a959f7c2f7f9 To: Lee Jones , Pavel Machek , Greg Kroah-Hartman , Dave Ertman , Ira Weiny , Leon Romanovsky , Miguel Ojeda , Alex Gaynor , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , "Rafael J. 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As the reading and writing to the i2c client via the register! macro has not been implemented yet [1], the patch series will only contain the additional abstractions required. [1] https://lore.kernel.org/rust-for-linux/DDDS2V0V2NVJ.16ZKXCKUA1HUV@kernel.org/ The following changes were made: * add basic led classdev abstractions to register and unregister leds * add basic led classdev abstractions to register and unregister multicolor leds Changes since v13: * rebased onto v7.1-rc1 Changes since v12: * add `led::DeviceBuilder::name()` and `DeviceBuilderState' * add `led::Color::as_c_str` Changes since v11: * use `led::DeviceBuilder` instead of `led::InitData` * use static_assert instead of const { assert!(...) } * restructured patches to avoid moving `led::Device` from rust/kernel/led.rs to rust/kernel/led/normal.rs in the 2. patch Changes since v10: * allow in-place initialization of `LedOps` * run rustfmt for code inside `try_pin_init!` Changes since v9: * add missing periods in documentation * duplicate `led::Device` and `led::Adapter` instead of using a complex trait * fix imports not using prelude * adapt to CStr change * documented `led::Color::Multi` and `led::Color::Rgb` Changes since v8: * accept `Option>` in `led::InitData::fwnode()` * make functions in `MultiColorSubLed` const * drop the "rust: Add trait to convert a device reference to a bus device reference" patch, as it has been picked into driver-core Changes since v7: * adjusted import style * added classdev parameter to callback functions in `LedOps` * implement `led::Color` * extend `led::InitData` with - initial_brightness - default_trigger - default_color * split generic and normal led classdev abstractions up (see patch 3/4) * add multicolor led class device abstractions (see patch 4/4) * added MAINTAINERS entry Changes since v6: * fixed typos * improved documentation Changes since v5: * rename `IntoBusDevice` trait into `AsBusDevice` * fix documentation about `LedOps::BLOCKING` * removed dependency on i2c bindings * added `AsBusDevice` implementation for `platform::Device` * removed `device::Device` fallback implementation * document that `AsBusDevice` must not be used by drivers and is intended for bus and class device abstractions only. Changes since v4: * add abstraction to convert a device reference to a bus device reference * require the bus device as parent device and provide it in class device callbacks * remove Pin> abstraction (as not relevant for the led abstractions) * fixed formatting in `led::Device::new` * fixed `LedOps::BLOCKING` did the inverse effect Changes since v3: * fixed kunit tests failing because of example in documentation Changes since v2: * return `Devres` on `led::Device` creation * replace KBox with T in struct definition * increment and decrement reference-count of fwnode * make a device parent mandatory for led classdev creation * rename `led::Handler` to `led::LedOps` * add optional `brightness_get` function to `led::LedOps` * use `#[vtable]` instead of `const BLINK: bool` * use `Opaque::cast_from` instead of casting a pointer * improve documentation * improve support for older rust versions * use `&Device` for parent Changes since v1: * fixed typos noticed by Onur Özkan Signed-off-by: Markus Probst --- Markus Probst (3): rust: leds: add basic led classdev abstractions rust: leds: add Mode trait rust: leds: add multicolor classdev abstractions MAINTAINERS | 8 + rust/bindings/bindings_helper.h | 1 + rust/kernel/led.rs | 356 ++++++++++++++++++++++++++++++++++++ rust/kernel/led/multicolor.rs | 387 ++++++++++++++++++++++++++++++++++++++++ rust/kernel/led/normal.rs | 231 ++++++++++++++++++++++++ rust/kernel/lib.rs | 1 + 6 files changed, 984 insertions(+) --- base-commit: 5e9b7d093f3f77cb0af4409559e3d139babfb443 change-id: 20251114-rust_leds-a959f7c2f7f9