For CODEC to CODEC DAI links the paths are created in snd_soc_dapm_new_pcm(). Also for CODEC to CODEC links the widgets are connected cross-over via a DAI link widget, meaning that the capture widget of one CODEC will be connected to the playback widget of the other and vice versa. Whereas snd_soc_dapm_connect_dai_link_widgets() directly connects the playback widget of the CPU DAI to the playback widget of the CODEC DAI and the capture widget of the CPU DAI to the capture widget of the CODEC DAI. So not skipping CODEC<->CODEC links in snd_soc_dapm_connect_dai_link_widgets() will create incorrect connections between the two CODECs which will cause DAPM to detect active paths where there are none and unnecessarily power up widgets.
Fixes: b893ea5 ("ASoC: sapm: Automatically connect DAI link widgets in DAPM graph.") Cc: stable@vger.kernel.org (for 3.14+) Signed-off-by: Lars-Peter Clausen lars@metafoo.de --- sound/soc/soc-dapm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index fb6c7b7..142a738 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3410,8 +3410,11 @@ void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card) cpu_dai = rtd->cpu_dai; codec_dai = rtd->codec_dai;
- /* dynamic FE links have no fixed DAI mapping */ - if (rtd->dai_link->dynamic) + /* + * dynamic FE links have no fixed DAI mapping. + * CODEC<->CODEC links have no direct connection. + */ + if (rtd->dai_link->dynamic || rtd->dai_link->params) continue;
/* there is no point in connecting BE DAI links with dummies */