linux-kernel - Re: [PATCH v3] rust: regulator: add a bare minimum regulator abstraction

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Message-ID: <aCnP6QNDzCUUjplk@finisterre.sirena.org.uk>
Date: Sun, 18 May 2025 13:17:45 +0100
From: Mark Brown <broonie@...nel.org>
To: Alexandre Courbot <acourbot@...dia.com>
Cc: Daniel Almeida <daniel.almeida@...labora.com>,
	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>,
	Boris Brezillon <boris.brezillon@...labora.com>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	Liam Girdwood <lgirdwood@...il.com>, linux-kernel@...r.kernel.org,
	rust-for-linux@...r.kernel.org
Subject: Re: [PATCH v3] rust: regulator: add a bare minimum regulator
 abstraction

On Sun, May 18, 2025 at 11:28:01AM +0900, Alexandre Courbot wrote:

> Alongside the `Enabled` and `Disabled` states, there would be a third
> state (`Dynamic`?) in which the regulator could either be enabled or
> disabled. This `Dynamic` state is the only one providing `enable` and
> `disable` methods (as well as `is_enabled`) to change its operational
> state without affecting its type.

Note that checking is_enabled() is a red flag, it's only there for
bootstrapping purposes as drivers are probing where there's some
different sequence might be needed - the use cases are quite limited,
most drivers shold just enable the regulator and initialise the
device.

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