[PATCH v2 06/21] ASoC: ops: Introduce 'snd_soc_deactivate_kctl'

[Cezary Rojewski]

On 10/4/2026 8:03 AM, James Calligeros wrote:
> From: Martin Povišer <povik+lin at cutebit.org>
> 
> The new function can be used to deactivate controls. It is something
> a machine driver may call in fixup_controls.

> +/**
> + * snd_soc_deactivate_kctl - Activate/deactivate control matching a name
> + *
> + * @card: where to look for the controls
> + * @name: name
> + * @active: non-zero to activate, zero to deactivate
> + *
> + * Return 0 for success, else error.
> + */
> +int snd_soc_deactivate_kctl(struct snd_soc_card *card,

The name sounds weird with 'int active' in its parameter list. Either
pair of wrappers:
	snd_soc_ctl_activate()
	snd_soc_ctl_deactivate()

or something of snd_soc_ctl_set_status() sort. I see that sound/core
uses: snd_ctl_activate_id(). Perhaps snd_soc_ctl_activate() is winner
here by being cohesive with sound/core even with some confusion around
'int activate' part.

> +	const char *name, int active)
> +{
> +	struct snd_kcontrol *kctl;
> +	int ret = -EINVAL;
> +
> +	/* Sanity check for name */
> +	if (unlikely(!name))
> +		return -EINVAL;

Not a fan of unlikely() in not performance-critical code.

> +
> +	kctl = snd_soc_card_get_kcontrol(card, name);
> +
> +	if (kctl) {
> +		ret = snd_ctl_activate_id(card->snd_card, &kctl->id, active);
> +		if (ret < 0)
> +			return ret;

The if-statement can be dropped.

> +	} else {
> +		dev_dbg(card->dev, "Tried to de/activate unknown control '%s'\n",
> +			name);

One line.

> +	}
> +
> +	return ret;
> +}
> +EXPORT_SYMBOL_GPL(snd_soc_deactivate_kctl);
> +