[PATCH v4 0/2] rust: clk: Add ExclusiveClk and use it in pwm-th1520

[Maurice Hieronymus]

Add a Rust binding for clk_rate_exclusive_get() / clk_rate_exclusive_put()
and use it in pwm-th1520, which previously carried a TODO noting the
missing binding.

Signed-off-by: Maurice Hieronymus <mhi at mailbox.org>
---
Changes in v4:
- Rebased on v5 of https://lore.kernel.org/rust-for-linux/20260706-clk-type-state-v5-0-67c5f326a16c@collabora.com/
- Link to v3: https://lore.kernel.org/r/20260628-rate-exclusive-get-th1520-v3-0-c7ca3ebcf60f@mailbox.org

Changes in v3:
- Add #[inline] to Clk::rate_exclusive_get() (Onur Özkan)
- Drop intra-doc links from the regular SAFETY comments (Onur Özkan)
- Rebase on Daniel Almeida's Clk type-state pattern
  https://lore.kernel.org/rust-for-linux/20260618-clk-type-state-v4-0-8be082786080@collabora.com/
- Use vertical imports in pwm_th1520.rs
- Link to v2: https://lore.kernel.org/r/20260605-rate-exclusive-get-th1520-v2-0-695640bf7249@mailbox.org

Changes in v2:
- Rebase on pwm/for-next
- Remove newline after [`clk_rate_exclusive_get`] comment
- Remove unused [`struct clk`] link
- Put semicolon outside of unsafe block
- Link to v1: https://lore.kernel.org/r/20260526-rate-exclusive-get-th1520-v1-0-34cf034e1764@mailbox.org

---
Maurice Hieronymus (2):
      rust: clk: Add `ExclusiveClk` wrapper for `clk_rate_exclusive_get`
      pwm: th1520: Lock clock rate with clk_rate_exclusive_get

 drivers/pwm/pwm_th1520.rs | 18 ++++++++-----
 rust/kernel/clk.rs        | 67 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+), 6 deletions(-)
---
base-commit: 92010229c4b38897f1319d260162d2f96925ed17
change-id: 20260526-rate-exclusive-get-th1520-764a949de18e
prerequisite-change-id: 20250909-clk-type-state-c01aa7dd551d:v5
prerequisite-patch-id: 2d3dc45c241d9062a0d2546ec649eec7970fa50a
prerequisite-patch-id: 67ad535fe110207ebc79045ba022ebb7137b0309
prerequisite-patch-id: 3d1d8ee5c2a4957edd0807b7a5cb65dabab345b5
prerequisite-patch-id: e2659037b8aaf51831da099cc568ad5b3c24a4dd

Best regards,
-- 
Maurice Hieronymus <mhi at mailbox.org>