linux-kernel - Re: [PATCH RFC 1/6] rust: Add basic PWM abstractions

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Message-ID: <enxctdseecqz765nmd24vziiaksmyhltqfwycdszmfq3s7orjm@lnpc7czuluis>
Date: Mon, 26 May 2025 09:53:04 +0200
From: Uwe Kleine-König <ukleinek@...nel.org>
To: Michal Wilczynski <m.wilczynski@...sung.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, 
	Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, 
	Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, Drew Fustini <drew@...7.com>, 
	Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>, 
	Marek Szyprowski <m.szyprowski@...sung.com>, linux-kernel@...r.kernel.org, linux-pwm@...r.kernel.org, 
	rust-for-linux@...r.kernel.org, linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org
Subject: Re: [PATCH RFC 1/6] rust: Add basic PWM abstractions

Hello Michal,

On Sat, May 24, 2025 at 11:14:55PM +0200, Michal Wilczynski wrote:
> Introduce initial Rust abstractions for the Linux PWM subsystem. These
> abstractions provide safe wrappers around the core C data structures and
> functions, enabling the development of PWM chip drivers in Rust.

Oh wow, thanks for rustifying PWM. That might be my chance to actually
learn Rust.

I don't know when I will find the time to look into that in detail but
one thing I'd like to have for Rust support is that the drivers use the
new abstraction (i.e. .round_waveform_tohw() + .round_waveform_fromhw()
+ .read_waveform() + .write_waveform()) instead of the older .apply()
callback.

Best regards
Uwe

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