linux-kernel - [PATCH v1 0/4] rust: Add basic I2C driver abstractions

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Message-ID: <20250626174623.904917-1-igor.korotin.linux@gmail.com>
Date: Thu, 26 Jun 2025 18:46:22 +0100
From: Igor Korotin <igor.korotin.linux@...il.com>
To: Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: 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>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Asahi Lina <lina+kernel@...hilina.net>,
	Wedson Almeida Filho <wedsonaf@...il.com>,
	Alex Hung <alex.hung@....com>,
	Tamir Duberstein <tamird@...il.com>,
	Xiangfei Ding <dingxiangfei2009@...il.com>,
	linux-kernel@...r.kernel.org,
	rust-for-linux@...r.kernel.org,
	linux-i2c@...r.kernel.org
Subject: [PATCH v1 0/4] rust: Add basic I2C driver abstractions

This patch series introduces basic Rust I2C driver abstractions 
and optional ACPI match-table support and provides a sample driver 
demonstrating both OF and ACPI binding

Currently Rust I2C abstractions support only Open Firmware OF device 
matching. This series splits the work into four patches so that the 
core abstractions and sample driver can land immediately while ACPI 
integration may be reviewed once the ACPI macros are upstream

Changes include
 - core I2C abstractions `i2c::Device` `i2c::Driver` `i2c::Adapter` 
   built on `struct i2c_client` and `struct i2c_driver`
 - a standalone Rust sample driver exercising Legacy I2C ID and OF ID
   matching
 - optional ACPI ID-table support in the `i2c::Driver` abstraction
 - ACPI-enabled sample driver showing `kernel::acpi_device_table!` 
   usage

This separation lets maintainers review and merge the non-ACPI portions
immediately while patches 3 and 4 both depending on the ACPI 
infrastructure can be queued once the ACPI macros are upstream

Patch series:

1 rust: i2c: add basic I2C device and driver abstractions
2 samples: rust: add I2C sample driver (OF only)
3 rust: i2c: support ACPI match-table in driver abstractions
Depends-on: 20250620152425.285683-1-igor.korotin.linux@...il.com
4 samples: rust: show ACPI ID-table in I2C sample driver
Depends-on: 20250620152425.285683-1-igor.korotin.linux@...il.com

Igor Korotin (4):
  rust: i2c: add basic I2C device and driver abstractions
  samples: rust: add Rust I2C sample driver
  rust: i2c: ACPI ID-table support for I2C abstractions
  samples: rust: show ACPI ID-table in I2C sample driver

 MAINTAINERS                     |   3 +
 rust/bindings/bindings_helper.h |   1 +
 rust/helpers/helpers.c          |   1 +
 rust/helpers/i2c.c              |  15 ++
 rust/kernel/i2c.rs              | 386 ++++++++++++++++++++++++++++++++
 rust/kernel/lib.rs              |   2 +
 samples/rust/Kconfig            |  11 +
 samples/rust/Makefile           |   1 +
 samples/rust/rust_driver_i2c.rs |  69 ++++++
 9 files changed, 489 insertions(+)
 create mode 100644 rust/helpers/i2c.c
 create mode 100644 rust/kernel/i2c.rs
 create mode 100644 samples/rust/rust_driver_i2c.rs


base-commit: 63dafeb392139b893a73b6331f347613f0929702
-- 
2.43.0