dpcm_end_walk_at_be() stops the graph walk when first BE is found for the given FE component. In a component model we may want to connect multiple DAIs from different components. A new flag is introduced in 'snd_soc_card', which when set allows DAI/component chaining. Later PCM operations can be called for all these listed components for a valid DAPM path.
Signed-off-by: Sameer Pujar spujar@nvidia.com --- include/sound/soc.h | 1 + sound/soc/soc-pcm.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h index 1e0376f..95e02a7 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1069,6 +1069,7 @@ struct snd_soc_card { int num_of_dapm_widgets; const struct snd_soc_dapm_route *of_dapm_routes; int num_of_dapm_routes; + bool component_chaining;
/* lists of probed devices belonging to this card */ struct list_head component_dev_list; diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 6dc21b6..7f612e3 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1322,7 +1322,8 @@ int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
/* get number of valid DAI paths and their widgets */ paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list, - dpcm_end_walk_at_be); + fe->card->component_chaining ? + NULL : dpcm_end_walk_at_be);
dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, stream ? "capture" : "playback");