Signed-off-by: Lu Guanqun guanqun.lu@intel.com --- sound/soc/codecs/upd9976.c | 23 +++++++++++++++++++++++ 1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/sound/soc/codecs/upd9976.c b/sound/soc/codecs/upd9976.c index 8b2fff7..69d83ea 100644 --- a/sound/soc/codecs/upd9976.c +++ b/sound/soc/codecs/upd9976.c @@ -60,6 +60,23 @@ static inline int upd9976_write(struct snd_soc_codec *codec, return ret; }
+static int upd9976_mic2_bias_event(struct snd_soc_dapm_widget *widget, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = widget->codec; + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + snd_soc_write(codec, UPD9976_AUXDBNC, 0xff); + break; + case SND_SOC_DAPM_POST_PMD: + snd_soc_write(codec, UPD9976_AUXDBNC, 0x0); + break; + } + + return 0; +} + /* * Mixing Volume: from -25 dB to 6 dB in 1 dB steps. */ @@ -161,6 +178,12 @@ static const struct snd_soc_dapm_widget upd9976_dapm_widgets[] = { SND_SOC_DAPM_MUX("PCM2 Mux", SND_SOC_NOPM, 0, 0, &upd9976_pcm2_mux_control),
+ /* Microphose Bias */ + SND_SOC_DAPM_MICBIAS("MIC1 Bias", UPD9976_MICCTRL, 6, 0), + SND_SOC_DAPM_MICBIAS_E("MIC2 Bias", UPD9976_MICCTRL, 4, 0, + upd9976_mic2_bias_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + /* PGA */ SND_SOC_DAPM_PGA("HP Playback Left", UPD9976_DRVPOWERCTRL, 2, 0, NULL, 0),