Commit ac29a8f4 authored Dec 16, 2016 by Adam Thomson Committed by Mark Brown Dec 16, 2016

ASoC: da7218: Set DAI output pin high impedance when not in use



For TDM mode, the I2S data out line can be shared between mutliple
codecs. In this scenario, only the active codec should be using
the line, and all others should be high impedance. However,
currently in the driver this configuration isn't set when capture
is inactive, and the line remains driven.

This patch updates the AIF_OUT widget to set the DAI output pin of
the device as high impedance when not in use.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent a5de5b74

sound/soc/codecs/da7218.c

+2 −1

Original line number	Original line	Diff line number	Diff line
	@@ -1634,7 +1634,8 @@ static const struct snd_soc_dapm_widget da7218_dapm_widgets[] = {
	SND_SOC_DAPM_POST_PMU \| SND_SOC_DAPM_POST_PMD),		SND_SOC_DAPM_POST_PMU \| SND_SOC_DAPM_POST_PMD),

	/* DAI */		/* DAI */
	SND_SOC_DAPM_AIF_OUT("DAIOUT", "Capture", 0, SND_SOC_NOPM, 0, 0),		SND_SOC_DAPM_AIF_OUT("DAIOUT", "Capture", 0, DA7218_DAI_TDM_CTRL,
			DA7218_DAI_OE_SHIFT, DA7218_NO_INVERT),
	SND_SOC_DAPM_AIF_IN("DAIIN", "Playback", 0, SND_SOC_NOPM, 0, 0),		SND_SOC_DAPM_AIF_IN("DAIIN", "Playback", 0, SND_SOC_NOPM, 0, 0),

	/* Output Mixers */		/* Output Mixers */