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Subject[PATCH v5 2/7] ASoC: soc-pcm: Get all BEs along DAPM path
Date
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 5ac578c..4a9958b 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1084,6 +1084,7 @@ struct snd_soc_card {
unsigned int fully_routed:1;
unsigned int disable_route_checks:1;
unsigned int probed:1;
+ unsigned int component_chaining:1;

void *drvdata;
};
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 17ff3a3..51d98ff5 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1259,7 +1259,8 @@ 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");
--
2.7.4
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