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Subject[PATCH] ASoC: simple-card: Don't create separate link when platform is present
Date
In normal sound case all DAIs are detected as CPU-Codec.
simple_dai_link_of supports the presence of a platform but it counts
it as a CPU DAI resulting in the creation of an extra link.

Adding a platform property to a link description like:

simple-audio-card,dai-link {
cpu {
sound-dai = <&sai1>;
};
plat {
sound-dai = <&dsp>;
};
codec {
sound-dai = <&wm8960>;
}

will result in the creation of two links:
* sai1 <-> wm8960
* dsp <-> wm8960

which is obviously not what we want. We just want one single link
with:
* sai1 <-> wm8960 (and platform set to dsp).

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
sound/soc/generic/simple-card.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 10b82bf043d1..55e9f8800b3e 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -371,6 +371,7 @@ static int simple_for_each_link(struct asoc_simple_priv *priv,
do {
struct asoc_simple_data adata;
struct device_node *codec;
+ struct device_node *plat;
struct device_node *np;
int num = of_get_child_count(node);

@@ -381,6 +382,9 @@ static int simple_for_each_link(struct asoc_simple_priv *priv,
ret = -ENODEV;
goto error;
}
+ /* get platform */
+ plat = of_get_child_by_name(node, is_top ?
+ PREFIX "plat" : "plat");

/* get convert-xxx property */
memset(&adata, 0, sizeof(adata));
@@ -389,6 +393,8 @@ static int simple_for_each_link(struct asoc_simple_priv *priv,

/* loop for all CPU/Codec node */
for_each_child_of_node(node, np) {
+ if (plat == np)
+ continue;
/*
* It is DPCM
* if it has many CPUs,
--
2.17.1
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