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ALSA: scarlett2: Handle Gen 4 Direct Monitor mix updates

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When the Direct Monitor feature on the Scarlett 4th Gen Solo and 2i2
interfaces is used, the Mix A and B gains are updated by the
interface. This patch calls snd_ctl_notify() for the ALSA mix controls
when a Direct Monitor notification is received.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/713d032e343e0547212368919bef17d6fa1c9d29.1703612638.git.g@b4.vu
This commit is contained in:
Geoffrey D. Bennett 2023-12-27 04:38:20 +10:30 committed by Takashi Iwai
parent ac19be067a
commit e8e14270d8
1 changed files with 12 additions and 0 deletions
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12
sound/usb/mixer_scarlett2.c
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@ -6285,11 +6285,23 @@ static void scarlett2_notify_direct_monitor(struct usb_mixer_interface *mixer)
{
struct snd_card *card = mixer->chip->card;
struct scarlett2_data *private = mixer->private_data;
int count = private->num_mix_in * private->num_mix_out;
int i;
private->direct_monitor_updated = 1;
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&private->direct_monitor_ctl->id);
if (!scarlett2_has_mixer(private))
return;
private->mix_updated = 1;
/* Notify of change to the mix controls */
for (i = 0; i < count; i++)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&private->mix_ctls[i]->id);
}
/* Notify on power change */