Update SC7280 machine driver for enabling external mic bias supply, Which is required for villager rev boards.
Signed-off-by: Srinivasa Rao Mandadapu quic_srivasam@quicinc.com --- sound/soc/qcom/sc7280.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/sound/soc/qcom/sc7280.c b/sound/soc/qcom/sc7280.c index da7469a..6404e94 100644 --- a/sound/soc/qcom/sc7280.c +++ b/sound/soc/qcom/sc7280.c @@ -33,6 +33,7 @@ struct sc7280_snd_data { struct snd_soc_jack hdmi_jack; bool jack_setup; bool stream_prepared[LPASS_MAX_PORTS]; + struct regulator *vdd_supply; };
static void sc7280_jack_free(struct snd_jack *jack) @@ -345,6 +346,24 @@ static int sc7280_snd_startup(struct snd_pcm_substream *substream) return ret; }
+static int sc7280_dmic_micbias(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_card *card = w->dapm->card; + struct sc7280_snd_data *data = snd_soc_card_get_drvdata(card); + int ret = 0; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + ret = regulator_enable(data->vdd_supply); + break; + case SND_SOC_DAPM_POST_PMD: + ret = regulator_disable(data->vdd_supply); + break; + } + return ret; +} + static const struct snd_soc_ops sc7280_ops = { .startup = sc7280_snd_startup, .hw_params = sc7280_snd_hw_params, @@ -356,6 +375,7 @@ static const struct snd_soc_ops sc7280_ops = { static const struct snd_soc_dapm_widget sc7280_snd_widgets[] = { SND_SOC_DAPM_HP("Headphone Jack", NULL), SND_SOC_DAPM_MIC("Headset Mic", NULL), + SND_SOC_DAPM_MIC("PMIC BIAS", sc7280_dmic_micbias), };
static int sc7280_snd_platform_probe(struct platform_device *pdev) @@ -389,6 +409,10 @@ static int sc7280_snd_platform_probe(struct platform_device *pdev) link->ops = &sc7280_ops; }
+ data->vdd_supply = devm_regulator_get(dev, "vdd-dmic-bias"); + if (IS_ERR(data->vdd_supply) + return PTR_ERR(data->vdd_supply); + return devm_snd_soc_register_card(dev, card); }