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ASoC: wm8962: Don't report a microphone if it's shorted to ground on plug

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This usually means that a TRS plug with no microphone pin has been plugged
into a TRRS socket. Cases where a user is plugging in a microphone while
pressing a button will be handled via incoming interrupt after the user
releases the button, so the microphone will still be detected once it
becomes usable.

Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260105-wm8962-l5-fixes-v1-3-f4f4eeacf089@puri.sm
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sebastian Krzyszkowiak 2026-01-05 04:02:10 +01:00 committed by Mark Brown
parent 66c26346ae
commit e590752119
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GPG Key ID: 24D68B725D5487D0
1 changed files with 10 additions and 0 deletions
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10
sound/soc/codecs/wm8962.c
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@ -67,6 +67,8 @@ struct wm8962_priv {
struct mutex dsp2_ena_lock;
u16 dsp2_ena;
int mic_status;
struct delayed_work mic_work;
struct snd_soc_jack *jack;
@ -3081,8 +3083,16 @@ static void wm8962_mic_work(struct work_struct *work)
if (reg & WM8962_MICSHORT_STS) {
status |= SND_JACK_BTN_0;
irq_pol |= WM8962_MICSCD_IRQ_POL;
/* Don't report a microphone if it's shorted right after
* plugging in, as this may be a TRS plug in a TRRS socket.
*/
if (!(wm8962->mic_status & WM8962_MICDET_STS))
status = 0;
}
wm8962->mic_status = status;
snd_soc_jack_report(wm8962->jack, status,
SND_JACK_MICROPHONE | SND_JACK_BTN_0);