linux-kernel - Re: [PATCH v1 0/2] userspace-consumer: adding is

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Message-ID: <a0bf24c6-58da-42e7-b686-03a893b38ecb@sirena.org.uk>
Date: Wed, 28 May 2025 19:16:04 +0100
From: Mark Brown <broonie@...nel.org>
To: Daniel Okazaki <dtokazaki@...gle.com>
Cc: Liam Girdwood <lgirdwood@...il.com>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Zev Weiss <zev@...ilderbeest.net>, kernel-team@...roid.com,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v1 0/2] userspace-consumer: adding is_shared flag

On Wed, May 28, 2025 at 05:44:23PM +0000, Daniel Okazaki wrote:

> Currently this userspace regulator driver requires exclusive control
> of the regulator to operate. This patch adds an optional flag to
> remove that constraint, and allow the regulator to be shared by other
> modules. This allows for userspace to share control over a regulator
> with kernel space.

What is the use case here?  This is a debug tool intended mainly for
when you're developing a regulator driver and have something like a
development board with no consumers at all.

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