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由 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>
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