Recent changes in the ASoC core prevent multi-cpu BE dailinks from being used. DPCM does support multi-cpu DAIs for BE Dailinks, but not for FE. Handle the FE checks first, and make sure all DAIs support the same capabilities within the same dailink. BugLink: https://github.com/thesofproject/linux/issues/2031 Fixes: 9b5db059366ae2 ("ASoC: soc-pcm: dpcm: Only allow playback/capture if supported") Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> Reviewed-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@xxxxxxxxxxxxxxx> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx> Reviewed-by: Daniel Baluta <daniel.baluta@xxxxxxxxx> --- sound/soc/soc-pcm.c | 44 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 34 insertions(+), 10 deletions(-) diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 276505fb9d50..2c114b4542ce 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -2789,20 +2789,44 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) struct snd_pcm *pcm; char new_name[64]; int ret = 0, playback = 0, capture = 0; + int stream; int i; + if (rtd->dai_link->dynamic && rtd->num_cpus > 1) { + dev_err(rtd->dev, + "DPCM doesn't support Multi CPU for Front-Ends yet\n"); + return -EINVAL; + } + if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { - cpu_dai = asoc_rtd_to_cpu(rtd, 0); - if (rtd->num_cpus > 1) { - dev_err(rtd->dev, - "DPCM doesn't support Multi CPU yet\n"); - return -EINVAL; + if (rtd->dai_link->dpcm_playback) { + stream = SNDRV_PCM_STREAM_PLAYBACK; + + for_each_rtd_cpu_dais(rtd, i, cpu_dai) + if (!snd_soc_dai_stream_valid(cpu_dai, + stream)) { + dev_err(rtd->card->dev, + "CPU DAI %s for rtd %s does not support playback\n", + cpu_dai->name, + rtd->dai_link->stream_name); + return -EINVAL; + } + playback = 1; + } + if (rtd->dai_link->dpcm_capture) { + stream = SNDRV_PCM_STREAM_CAPTURE; + + for_each_rtd_cpu_dais(rtd, i, cpu_dai) + if (!snd_soc_dai_stream_valid(cpu_dai, + stream)) { + dev_err(rtd->card->dev, + "CPU DAI %s for rtd %s does not support capture\n", + cpu_dai->name, + rtd->dai_link->stream_name); + return -EINVAL; + } + capture = 1; } - - playback = rtd->dai_link->dpcm_playback && - snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK); - capture = rtd->dai_link->dpcm_capture && - snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE); } else { /* Adapt stream for codec2codec links */ int cpu_capture = rtd->dai_link->params ? -- 2.20.1
