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ASoC: soc-pcm: Get all BEs along DAPM path 

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>
Link: https://lore.kernel.org/r/1604329814-24779-3-git-send-email-spujar@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sameer Pujar 2020-11-02 20:40:09 +05:30 committed by Mark Brown
parent 3256ef984b
commit aa293777bf
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 3 additions and 1 deletions
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1
include/sound/soc.h
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@ -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;
};

3
sound/soc/soc-pcm.c
View File

@ -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");