Unverified Commit 99bcedbd authored May 28, 2018 by Kai Chieh Chuang Committed by Mark Brown May 29, 2018

ASoC: dpcm: symmetry constraint on FE substream



We should set BE symmetric constraint on FE substream.

in case one BE is used by two FE1/FE2,
the first BE runtime will use FE1's substream->runtime.
hence the FE1's will be constrained by BE symmetry property.

Though, second FE2 call dpcm_apply_symmetry,
the be_substream->runtime == FE1's substream->runtime.
The FE2's substream->runtime will not be constrained
by BE's symmetry property.

Signed-off-by: KaiChieh Chuang <kaichieh.chuang@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent 9c0ac70a

sound/soc/soc-pcm.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -1779,14 +1779,15 @@ static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,

		/* Symmetry only applies if we've got an active stream. */
		if (rtd->cpu_dai->active) {
		err = soc_pcm_apply_symmetry(be_substream, rtd->cpu_dai);
		err = soc_pcm_apply_symmetry(fe_substream,
		rtd->cpu_dai);
		if (err < 0)
		return err;
		}

		for (i = 0; i < rtd->num_codecs; i++) {
		if (rtd->codec_dais[i]->active) {
		err = soc_pcm_apply_symmetry(be_substream,
		err = soc_pcm_apply_symmetry(fe_substream,
		rtd->codec_dais[i]);
		if (err < 0)
		return err;