From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com
audio-graph checks DT links 2 times. 1st is for counting DAIs / links to allocating memory, 2nd is for detecting DAIs. To detecting DAIs as CPU-dummy -> dummy-Codec order when DPCM case, it uses loops 2 times at 2nd DT link check. But it doesn't do it at 1st DT link check.
for (li.cpu = 1; li.cpu >= 0; li.cpu--) { /* * Detect all CPU first, and Detect all Codec 2n * * In Normal sound case, all DAIs are detected * as "CPU-Codec". * * In DPCM sound case, * all CPUs are detected as "CPU-dummy", and * all Codecs are detected as "dummy-Codec". * To avoid random sub-device numbering, * detect "dummy-Codec" in last; */ ret = graph_for_each_link(...); ... }
To prepare supporting multi-CPU/Codec, and code cleanup, this patch use same loop for 1st DT link check, too.
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- sound/soc/generic/audio-graph-card.c | 29 ++++++++++++++++++++++------ 1 file changed, 23 insertions(+), 6 deletions(-)
diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c index 8c5cdcdc8713..3a967c520b01 100644 --- a/sound/soc/generic/audio-graph-card.c +++ b/sound/soc/generic/audio-graph-card.c @@ -617,6 +617,10 @@ static int graph_count_noml(struct asoc_simple_priv *priv, { struct device *dev = simple_priv_to_dev(priv);
+ /* Do it only CPU turn */ + if (!li->cpu) + return 0; + li->link += 1; /* 1xCPU-Codec */ li->dais += 2; /* 1xCPU + 1xCodec */
@@ -633,10 +637,22 @@ static int graph_count_dpcm(struct asoc_simple_priv *priv, { struct device *dev = simple_priv_to_dev(priv);
- li->link++; /* 1xCPU-dummy */ - li->dais++; /* 1xCPU */ + /* + * Codec endpoint can be NULL for pluggable audio HW. + * Platform DT can populate the Codec endpoint depending on the + * plugged HW. + */ + if (!li->cpu && !codec_ep) + return 0; + + /* Do it all CPU endpoint, and 1st Codec endpoint */ + if (!li->cpu && dup_codec) + return 0;
- if (!dup_codec && codec_ep) { + if (li->cpu) { + li->link++; /* 1xCPU-dummy */ + li->dais++; /* 1xCPU */ + } else if (!dup_codec && codec_ep) { li->link++; /* 1xdummy-Codec */ li->conf++; /* 1xdummy-Codec */ li->dais++; /* 1xCodec */ @@ -698,9 +714,10 @@ static void graph_get_dais_count(struct asoc_simple_priv *priv, * => 4 DAIs = 2xCPU + 2xCodec * => 1 ccnf = 1xdummy-Codec */ - graph_for_each_link(priv, li, - graph_count_noml, - graph_count_dpcm); + for (li->cpu = 1; li->cpu >= 0; li->cpu--) + graph_for_each_link(priv, li, + graph_count_noml, + graph_count_dpcm); dev_dbg(dev, "link %d, dais %d, ccnf %d\n", li->link, li->dais, li->conf); }