Re: Re: [PATCH] ASoC: imx-rpmsg: Fix ignore-suspend-widgets only applied to codec DAPM

[Mark Brown]

On Mon, Apr 13, 2026 at 03:13:51AM +0000, Chancel Liu wrote:

> Thanks for pointing this out. I really appreciate your suggestion to
> move this functionality into core-level. Several machine drivers could
> benefit if there's an unified ignore‑suspend mechanism.

> I have an idea to make it support a generic and reusable mechanism in
> the core rather than something each machine driver has to re‑implement.
> The design follows a simple structure:

> 1. Parse and store the name of widgets to ignore suspend in 
> struct snd_soc_card

> The name list of widgets to ignore suspend can come either from DT or
> from the machine driver. Different boards/machines have different
> routing and power requirements. So allowing DT to specify
> "ignore-suspend-widgets" is important. It enables each device to define
> its own policy rather than forcing hard‑coded rules. To support this, a
> helper such as snd_soc_of_parse_ignore_suspend_widgets() can be defined
> in core and provided.

> 2. Apply ignore_suspend flags during snd_soc_bind_card()

> After all components have been probed and all DAPM widgets are
> registered in snd_soc_bind_card(), perform a unified search through
> the card’s widget list and mark matching widgets with
> ignore_suspend = 1. Any runtime prefixing applied during widget
> creation should be handled well by the lookup.

That sounds like a reasonable plan.

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