This patch series introduces support for ACPI match tables in Rust
drivers.
Currently, Rust abstractions support only Open Firmware (OF) device
matching. This series extends the driver model to support ACPI-based
matching, enabling Rust drivers to bind to ACPI-described devices.
Changes include:
- A new `acpi::DeviceId` abstraction for working with
`struct acpi_device_id`.
- A helper function `is_of_node()` for determining fwnode types.
- Updates to the core `Adapter` trait and `platform::Driver` to support
optional ACPI ID tables.
- A sample implementation in the Rust platform driver, demonstrating
multi-bus matching.
This is especially useful for writing drivers that work across platforms
using both OF and ACPI.
Tested using QEMU with a custom SSDT that creates an ACPI device matching
the sample Rust platform driver.
Igor Korotin (5):
rust: acpi: add `acpi::DeviceId` abstraction
rust: helpers: Add `is_of_node` helper function
rust: driver: Add ACPI id table support to Adapter trait
rust: platform: Add ACPI match table support to `Driver` trait
samples: rust: add ACPI match table example to platform driver
Changelog
---------
v2:
- Removed misleading comment in `acpi::DeviceID` implementation.
- Removed unnecessary casting in `acpi::DeviceID::new`.
- Moved `pub mod acpi` to correct alphabetical position in `rust/kernel/lib.rs`.
- Link to v1: https://lore.kernel.org/rust-for-linux/20250530123815.1766726-1-igor.korotin.linux@xxxxxxxxx/
MAINTAINERS | 2 +
rust/bindings/bindings_helper.h | 1 +
rust/helpers/helpers.c | 1 +
rust/helpers/of.c | 6 +++
rust/kernel/acpi.rs | 62 ++++++++++++++++++++++++++++
rust/kernel/driver.rs | 58 ++++++++++++++++++++++++--
rust/kernel/lib.rs | 1 +
rust/kernel/platform.rs | 17 +++++++-
samples/rust/rust_driver_platform.rs | 41 +++++++++++++++++-
9 files changed, 183 insertions(+), 6 deletions(-)
create mode 100644 rust/helpers/of.c
create mode 100644 rust/kernel/acpi.rs
--
2.43.0
