Can confirm that this is required for Pulseaudio to pick up the headphones properly. I tested this in my Xiaomi Poco F1 running postmarketOS (Phosh Mobile Desktop Environment). You can check the following pulseaudio issue for some more info. Link: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/1377 Tested-by: Joel Selvaraj <joelselvaraj.oss@xxxxxxxxx> On 07/10/22 10:57, Dylan Van Assche wrote: > Jack detection is currently fully functional via the input > interface together with multimedia buttons, but is not exposed > as an ALSA control. Therefore, ALSA clients such as PulseAudio > do not pick up the jack detection events as they only support > one of the possible interface (ALSA control or input interface, > but not both). Expose the jack events as an ALSA control and input > interface to provide ALSA clients both interfaces. > > Signed-off-by: Dylan Van Assche <me@xxxxxxxxxxxxxxxxx> > --- > sound/soc/codecs/wcd-mbhc-v2.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/sound/soc/codecs/wcd-mbhc-v2.c b/sound/soc/codecs/wcd-mbhc-v2.c > index 1911750f7445..1b75f49b2858 100644 > --- a/sound/soc/codecs/wcd-mbhc-v2.c > +++ b/sound/soc/codecs/wcd-mbhc-v2.c > @@ -725,6 +725,10 @@ static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc) > > mutex_lock(&mbhc->lock); > > + ret = snd_jack_add_new_kctl(mbhc->jack->jack, "Headset Jack", WCD_MBHC_JACK_MASK); > + if (ret) > + dev_warn(component->dev, "failed creating Headset Jack kctl with err: %d\n", ret); > + > /* enable HS detection */ > if (mbhc->mbhc_cb->hph_pull_up_control_v2) > mbhc->mbhc_cb->hph_pull_up_control_v2(component,
