/* update the cached value and notification flag if needed */
static void jack_detect_update(struct hda_codec *codec,
struct hda_jack_tbl *jack)
{
if (!jack->jack_dirty)
return;
if (jack->phantom_jack)
jack->pin_sense = AC_PINSENSE_PRESENCE;
else
jack->pin_sense = read_pin_sense(codec, jack->nid);
/* A gating jack indicates the jack is invalid if gating is unplugged */
if (jack->gating_jack && !snd_hda_jack_detect(codec, jack->gating_jack))
jack->pin_sense &= ~AC_PINSENSE_PRESENCE;
jack->jack_dirty = 0;
/* If a jack is gated by this one update it. */
if (jack->gated_jack) {
struct hda_jack_tbl *gated =
snd_hda_jack_tbl_get(codec, jack->gated_jack);
if (gated) {
gated->jack_dirty = 1;
jack_detect_update(codec, gated);
}
}
}
/* update the cached value and notification flag if needed */
static void jack_detect_update(struct hda_codec *codec,
struct hda_jack_tbl *jack)
{
if (jack->jack_dirty || !jack->jack_detect) {
jack->pin_sense = read_pin_sense(codec, jack->nid);
jack->jack_dirty = 0;
}
}
/**
* snd_hda_pin_sense - execute pin sense measurement
* @codec: the CODEC to sense
* @nid: the pin NID to sense
*
* Execute necessary pin sense measurement and return its Presence Detect,
* Impedance, ELD Valid etc. status bits.
*/
u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
if (jack) {
jack_detect_update(codec, jack);
return jack->pin_sense;
}
return read_pin_sense(codec, nid);
}
