Unverified Commit ace9ed54 authored by Charles Keepax's avatar Charles Keepax Committed by Mark Brown
Browse files

ASoC: soc-component: Add notify control helper function 



Add a function to allow ASoC drivers to easily notify an ALSA control
change. This function will automatically add any component naming
prefix into the control name.

Signed-off-by: default avatarCharles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230512122838.243002-3-ckeepax@opensource.cirrus.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 1946dda4

include/sound/soc-component.h

+4 −0
Original line number Diff line number Diff line
@@ -454,6 +454,10 @@ int snd_soc_component_force_enable_pin_unlocked( 
	struct snd_soc_component *component,

	const char *pin);



/* component controls */

int snd_soc_component_notify_control(struct snd_soc_component *component,

				     const char * const ctl);



/* component driver ops */

int snd_soc_component_open(struct snd_soc_component *component,

			   struct snd_pcm_substream *substream);

sound/soc/soc-component.c

+22 −0
Original line number Diff line number Diff line
@@ -236,6 +236,28 @@ int snd_soc_component_force_enable_pin_unlocked( 
}

EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin_unlocked);



int snd_soc_component_notify_control(struct snd_soc_component *component,

				     const char * const ctl)

{

	char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];

	struct snd_kcontrol *kctl;



	if (component->name_prefix)

		snprintf(name, ARRAY_SIZE(name), "%s %s", component->name_prefix, ctl);

	else

		snprintf(name, ARRAY_SIZE(name), "%s", ctl);



	kctl = snd_soc_card_get_kcontrol(component->card, name);

	if (!kctl)

		return soc_component_ret(component, -EINVAL);



	snd_ctl_notify(component->card->snd_card,

		       SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);



	return 0;

}

EXPORT_SYMBOL_GPL(snd_soc_component_notify_control);



/**

 * snd_soc_component_set_jack - configure component jack.

 * @component: COMPONENTs