Unverified Commit 4794601a authored by Ranjani Sridharan's avatar Ranjani Sridharan Committed by Mark Brown
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ASoC: SOF: Intel: hda: reset stream before coupling host and link DMA's 



The recommended programming sequence for HD-Audio DMA is to reset the
stream before coupling the link and host DMA's.

Signed-off-by: default avatarRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: default avatarKai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211125101520.291581-4-kai.vehmanen@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 2b1acedc

sound/soc/sof/intel/hda-stream.c

+5 −0
Original line number Diff line number Diff line
@@ -659,6 +659,11 @@ int hda_dsp_stream_hw_free(struct snd_sof_dev *sdev, 
							hstream);

	struct hdac_bus *bus = sof_to_bus(sdev);

	u32 mask = 0x1 << stream->index;

	int ret;



	ret = hda_dsp_stream_reset(sdev, stream);

	if (ret < 0)

		return ret;



	spin_lock_irq(&bus->reg_lock);

	/* couple host and link DMA if link DMA channel is idle */