Re: [PATCH v2 20/29] ASoC: tas2764: Add SDZ regulator

From: Mark Brown
Date: Tue Feb 18 2025 - 10:34:15 EST


On Tue, Feb 18, 2025 at 06:35:54PM +1000, James Calligeros wrote:

> 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.

I get that the reference counting that the regulator API does is useful
here but this isn't a regulator so shouldn't be exposed as such,
particularly since this winds up being visible in the DT ABI. I
could've sworn that someone did some helpers for this case but now I go
looking I can't find them, we certainly don't use any in the regulator
core.

> @@ -210,7 +220,7 @@ static const struct snd_soc_dapm_widget tas2764_dapm_widgets[] = {
> SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
> SND_SOC_DAPM_OUTPUT("OUT"),
> SND_SOC_DAPM_SIGGEN("VMON"),
> - SND_SOC_DAPM_SIGGEN("IMON")
> + SND_SOC_DAPM_SIGGEN("IMON"),
> };
>
Spurious unrelated change.

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