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      ASoC: twl6040: Add digital mute support · 98c5fb1f
      Peter Ujfalusi 提交于
      To reduce pop noise during playback stream start and stop the codec needs
      to have the digital_mute callback implemented.
      The codec need to be muted before the CPU dai has been stopped (McPDM).
      Stopping the McPDM will generate a pop on the codec since no signal on the
      PDM bus means full negative amplitude.
      By managing the mute/unmute state of the outputs we can decrease the amount
      of pop noise when playback starts or stops.
      Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
      Signed-off-by: NMark Brown <broonie@linaro.org>
      98c5fb1f
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