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 patches queued for v6.15-rc1 from different trees
(driver-core, nova), plus the patches in [1]; a branch containing the patches,
including the dependencies can be found in [2].
[1] https://lore.kernel.org/lkml/20250319203112.131959-1-dakr@kernel.org/
[2] https://web.git.kernel.org/pub/scm/linux/kernel/git/dakr/linux.git/log/?h=rust/auxiliary
Changes in v3:
- export auxiliary_bus_type
- implement impl TryFrom<&Device> for &auxiliary::Device
- implement Send + Sync for Registration and Device
Changes in v2:
- implement bus device soundness improvements from [2]
Danilo Krummrich (5):
rust: types: add `Opaque::zeroed`
driver: core: auxiliary: export auxiliary_bus_type
rust: auxiliary: add auxiliary device / driver abstractions
rust: auxiliary: add auxiliary registration
samples: rust: add Rust auxiliary driver sample
MAINTAINERS | 2 +
drivers/base/auxiliary.c | 3 +-
include/linux/auxiliary_bus.h | 2 +
rust/bindings/bindings_helper.h | 1 +
rust/helpers/auxiliary.c | 23 ++
rust/helpers/helpers.c | 1 +
rust/kernel/auxiliary.rs | 383 ++++++++++++++++++++++++++
rust/kernel/lib.rs | 2 +
rust/kernel/types.rs | 8 +
samples/rust/Kconfig | 12 +
samples/rust/Makefile | 1 +
samples/rust/rust_driver_auxiliary.rs | 110 ++++++++
12 files changed, 547 insertions(+), 1 deletion(-)
create mode 100644 rust/helpers/auxiliary.c
create mode 100644 rust/kernel/auxiliary.rs
create mode 100644 samples/rust/rust_driver_auxiliary.rs
--
2.48.1