Re: ASoC: soc-pcm2.c ?

[Jaroslav Kysela <perex@perex.cz>]

On 2/4/26 13:21, Takashi Iwai wrote:
> On Wed, 04 Feb 2026 13:10:41 +0100,
> Mark Brown wrote:
>>
>> On Wed, Feb 04, 2026 at 09:50:51AM +0100, Takashi Iwai wrote:
>>
>>> Basically it should be relatively easy to implement a mechanism to
>>> make kcontrols invisible, though; e.g. by introducing a new kcontrol
>>> flag like SNDRV_CTL_ELEM_ACCESS_INVISIBLE, and some machine drivers or
>>> codec drivers may set it up depending on the demands.
>>
>> We already have some support for marking controls as not visible by
>> default IIRC (I'm not immediately remembering the term that was used),
>> the trick is more finding a sensible way to turn it on - with so few
>> custom machine drivers these days it's much harder to enable sensibly.
> 
> IIRC, the existing mechanism isn't about visibility but accessibility
> via SNDRV_CTL_ELEM_ACCESS_INACTIVE flag.
> kcontrols are still exposed to user-space unless they are explicitly
> removed.

But do we want to hide those controls completely ? They may be good for 
debugging. The new flag may be just a hint to user space to not show those 
controls by default (and eventually make it read only or locked for the user 
space - depends on the use).

				Jaroslav				

-- 
Jaroslav Kysela <perex@perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.