PM8916 has three TX inputs that each have an (optional) internal RBIAS resistor. MIC BIAS Internal1/2 (for TX1/2) are already supported. TX3 does not have its own MIC BIAS supply, instead it is also supplied from MIC_BIAS1.
Now that we have simplified the MIC BIAS Internal* implementation we can easily add support for it:
Add a MIC BIAS Internal3 supply that enables the internal RBIAS resistor on TX3, and make sure to also enable the MIC_BIAS1 supply.
Tested-by: Nikita Travkin nikitos.tr@gmail.com # longcheer-l8150 Cc: Srinivas Kandagatla srinivas.kandagatla@linaro.org Signed-off-by: Stephan Gerhold stephan@gerhold.net --- v1: https://lore.kernel.org/alsa-devel/20200111164006.43074-5-stephan@gerhold.ne... Changes in v2: - Update for changes in previous patch (Use new "MIC_BIAS1" supply instead of "MIC BIAS External1") --- sound/soc/codecs/msm8916-wcd-analog.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/sound/soc/codecs/msm8916-wcd-analog.c b/sound/soc/codecs/msm8916-wcd-analog.c index d6d727f5bae5..85bc7ae4d267 100644 --- a/sound/soc/codecs/msm8916-wcd-analog.c +++ b/sound/soc/codecs/msm8916-wcd-analog.c @@ -856,6 +856,7 @@ static const struct snd_soc_dapm_route pm8916_wcd_analog_audio_map[] = { {"MIC BIAS Internal1", NULL, "MIC_BIAS1"}, {"MIC BIAS External2", NULL, "MIC_BIAS2"}, {"MIC BIAS Internal2", NULL, "MIC_BIAS2"}, + {"MIC BIAS Internal3", NULL, "MIC_BIAS1"}, };
static const struct snd_soc_dapm_widget pm8916_wcd_analog_dapm_widgets[] = { @@ -924,6 +925,9 @@ static const struct snd_soc_dapm_widget pm8916_wcd_analog_dapm_widgets[] = { pm8916_wcd_analog_enable_micbias_int2, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_SUPPLY("MIC BIAS Internal3", CDC_A_MICB_1_INT_RBIAS, 1, 0, + pm8916_wcd_analog_enable_micbias_int, + SND_SOC_DAPM_PRE_PMU),
SND_SOC_DAPM_ADC_E("ADC1", NULL, CDC_A_TX_1_EN, 7, 0, pm8916_wcd_analog_enable_adc,