linux-kernel - [RFC PATCH 0/3] rust: WMI abstractions

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Message-ID: <cover.1766331321.git.foxido@foxido.dev>
Date: Sun, 21 Dec 2025 21:22:36 +0300
From: Gladyshev Ilya <foxido@...ido.dev>
To: "foxido @ foxido . dev-cc= Rafael J. Wysocki" <rafael@...nel.org>
Cc: Len Brown <lenb@...nel.org>,
	Miguel Ojeda <ojeda@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>,
	Tamir Duberstein <tamird@...il.com>,
	Armin Wolf <W_Armin@....de>,
	platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	rust-for-linux@...r.kernel.org,
	linux-acpi@...r.kernel.org,
	Gladyshev Ilya <foxido@...ido.dev>
Subject: [RFC PATCH 0/3] rust: WMI abstractions

Overview
========
This patchset was developed some time ago out of pure curiosity
about the R4L project, but I believe it may still be useful, so
I decided to resume and post this work.
The goal of my curiosity is to develop a simple WMI driver in Rust
for unsupported laptop (I have some laying around) or, as a last
resort, submit a rewrite of redmi-wmi as a sample driver -- if that
would be acceptable.

I know that there is an undergoing API change in the WMI subsystem[1],
however it doesn't change the abstracted surface a lot.

This patchset consists of 3 patches:
1. Wrapper around ACPI objects (this may be unneeded after [1])
2. WMI abstractions
3. Sample driver for demonstration purposes only

Why RFC?
========
1. No real users for now
2. I have a feeling that I am doing something very wrong

[1]: https://lore.kernel.org/platform-driver-x86/20251220204622.3541-1-W_Armin@gmx.de/

Gladyshev Ilya (3):
  rust: implement wrapper for acpi_object
  rust: introduce WMI abstractions
  rust: sample driver for WMI demonstrations

 drivers/platform/x86/Makefile        |   1 +
 drivers/platform/x86/redmi_wmi_rs.rs |  60 ++++++
 rust/bindings/bindings_helper.h      |   1 +
 rust/kernel/acpi.rs                  | 103 +++++++++++
 rust/kernel/lib.rs                   |   2 +
 rust/kernel/wmi.rs                   | 267 +++++++++++++++++++++++++++
 6 files changed, 434 insertions(+)
 create mode 100644 drivers/platform/x86/redmi_wmi_rs.rs
 create mode 100644 rust/kernel/wmi.rs

base-commit: 9094662f6707d1d4b53d18baba459604e8bb0783
-- 
2.51.1.dirty