[PATCH v2 0/4] Auxiliary bus Rust abstractions

[Danilo Krummrich]

This series adds Rust abstractions for the auxiliary bus.

It implements the required abstractions to write auxiliary drivers and create
auxiliary device registrations. A driver sample illustrates how the
corresponding abstractions work.

The auxiliary abstractions are required for the Nova driver project, in order to
connect nova-core with the nova-drm driver.

This patch series depends on [1] (taken through the nova tree for v6.15) and
[2]; a branch containing the patches, including the dependency can be found in
[3].

[1] https://lore.kernel.org/rust-for-linux/20250306222336.23482-2-dakr@xxxxxxxxxx/
[2] https://lore.kernel.org/lkml/20250313021550.133041-1-dakr@xxxxxxxxxx/
[3] https://web.git.kernel.org/pub/scm/linux/kernel/git/dakr/linux.git/log/?h=rust/auxiliary

Changes in v2:
  - implement bus device soundness improvements from [2]

Danilo Krummrich (4):
  rust: types: add `Opaque::zeroed`
  rust: auxiliary: add auxiliary device / driver abstractions
  rust: auxiliary: add auxiliary registration
  samples: rust: add Rust auxiliary driver sample

 MAINTAINERS                           |   2 +
 rust/bindings/bindings_helper.h       |   1 +
 rust/helpers/auxiliary.c              |  23 ++
 rust/helpers/helpers.c                |   1 +
 rust/kernel/auxiliary.rs              | 345 ++++++++++++++++++++++++++
 rust/kernel/lib.rs                    |   2 +
 rust/kernel/types.rs                  |   8 +
 samples/rust/Kconfig                  |  12 +
 samples/rust/Makefile                 |   1 +
 samples/rust/rust_driver_auxiliary.rs |  99 ++++++++
 10 files changed, 494 insertions(+)
 create mode 100644 rust/helpers/auxiliary.c
 create mode 100644 rust/kernel/auxiliary.rs
 create mode 100644 samples/rust/rust_driver_auxiliary.rs


base-commit: 31cc40e864273b384f4e640ba3f11add432b78e0
-- 
2.48.1