Re: [PATCH v2 24/29] ASoC: tas2770: Add SDZ regulator

[Mark Brown <broonie@xxxxxxxxxx>]

On Tue, Feb 18, 2025 at 06:35:58PM +1000, James Calligeros wrote:
> From: Hector Martin <marcan@xxxxxxxxx>
> 
> Multiple amps can be connected to the same SDZ GPIO. Using raw GPIOs for
> this breaks, as there is no concept of refcounting/sharing. In order to
> model these platforms, introduce support for an SDZ "regulator". This
> allows us to represent the SDZ GPIO as a simple regulator-fixed, and
> then the regulator core takes care of refcounting so that all codecs are
> only powered down once all the driver instances are in the suspend
> state.

Same issue with the use of the regulator API winding up as ABI here as
with the earlier patch - I get why you're doing this pragmatically and
we should just have a general helper for refcounted GPIO enables.

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