[PATCH v2 0/2] rust: macros: Add derive Display for enums

[Maurice Hieronymus <mhi@mailbox.org>]

This patch series adds a derive macro for implementing kernel::fmt::Display
on enums using the syn crate, and then applies it to the Chipset enum in
the nova-core driver.

Maurice Hieronymus (2):
  rust: macros: Add derive Display for enums
  gpu: nova-core: Use derive Display for Chipset enum

 drivers/gpu/nova-core/gpu.rs | 17 ++----------
 rust/macros/display.rs       | 52 ++++++++++++++++++++++++++++++++++++
 rust/macros/lib.rs           | 42 +++++++++++++++++++++++++++++
 3 files changed, 96 insertions(+), 15 deletions(-)
 create mode 100644 rust/macros/display.rs

---
v1: https://lore.kernel.org/all/20260101184137.80445-1-mhi@mailbox.org/

Changes since v1:
- Instead of using the name() method with lowercase strings, implement
  a proper derive macro using syn as suggested by the reviewer
- The derive macro outputs the exact variant name as written
  (case-preserved)
- Supports all enum variant types: unit, tuple, and struct variants

base-commit: f8f9c1f4d0c7a64600e2ca312dec824a0bc2f1da
-- 
2.51.2