ASoC: nau8821: Revise MICBIAS control for power saving.

The patch helps save power by control MICBIAS. The headset's
MICBIAS should be disabled without button requirement.

Signed-off-by: Seven Lee <wtli@nuvoton.com>
Link: https://lore.kernel.org/r/20230913064003.2925997-1-wtli@nuvoton.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/nau8821.c b/sound/soc/codecs/nau8821.c
index f307374834b55774736d4d91cd6f106bd71ca924..6e1b6b26298aecdb51be453e9e77dbc487ca1d8c 100644 (file)
--- a/sound/soc/codecs/nau8821.c
+++ b/sound/soc/codecs/nau8821.c
@@ -1136,6 +1136,9 @@ static void nau8821_jdet_work(struct work_struct *work)
                                NAU8821_R12_INTERRUPT_DIS_CTRL,
                                NAU8821_IRQ_KEY_RELEASE_DIS |
                                NAU8821_IRQ_KEY_PRESS_DIS, 0);
+               } else {
+                       snd_soc_component_disable_pin(component, "MICBIAS");
+                       snd_soc_dapm_sync(nau8821->dapm);
                }
        } else {
                dev_dbg(nau8821->dev, "Headphone connected\n");