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From: Maurice Hieronymus <mhi@mailbox.org>
To: "Michal Wilczynski" <m.wilczynski@samsung.com>,
	"Drew Fustini" <fustini@kernel.org>,
	"Guo Ren" <guoren@kernel.org>, "Fu Wei" <wefu@redhat.com>,
	"Uwe Kleine-König" <ukleinek@kernel.org>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Boqun Feng" <boqun@kernel.org>, "Gary Guo" <gary@garyguo.net>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <lossin@kernel.org>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Alice Ryhl" <aliceryhl@google.com>,
	"Trevor Gross" <tmgross@umich.edu>,
	"Danilo Krummrich" <dakr@kernel.org>
Cc: linux-riscv@lists.infradead.org, linux-pwm@vger.kernel.org,
	 linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org
Subject: Re: [PATCH RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup
Date: Mon, 25 May 2026 17:51:23 +0200	[thread overview]
Message-ID: <1f550af5b8d1fa2aaa9936d5b0010c156e0cb455.camel@mailbox.org> (raw)
In-Reply-To: <8857fc45-b787-4661-b27b-8976e655f7c9@samsung.com>

On Mon, 2026-05-25 at 16:36 +0200, Michal Wilczynski wrote:
> 
> To move forward, we should fix this by implementing the proper
> generic
> 64-bit math helper in the Rust abstractions, rather than narrowing
> the
> types here. Are you open to looking into adding the Rust equivalent
> for
> mul_u64_u64_div_u64_roundup instead?

I would be definitely down, to help with that.

Before I start working on it, a couple of clarification questions.

Should I implement this as a thin FFI wrapper calling the C-Functions?
Or do you prefer to have a re-implementation in Rust.

Since mul_u64_u64_div_u64_roundup is a macro: Is it okay if this will
be a small Rust function or should it be a macro as well?

Thanks a lot,

Maurice

  reply	other threads:[~2026-05-25 15:51 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20260525131112eucas1p1d7e4836f71c81686e1f71e4007e344ec@eucas1p1.samsung.com>
2026-05-25 13:11 ` [PATCH RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup Maurice Hieronymus via B4 Relay
2026-05-25 14:36   ` Michal Wilczynski
2026-05-25 15:51     ` Maurice Hieronymus [this message]
2026-05-25 17:29       ` Gary Guo
2026-05-25 21:38       ` Michal Wilczynski
2026-05-30 10:41         ` Maurice Hieronymus
2026-05-30 17:45           ` Michal Wilczynski

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