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ASoC: simple-card-utils: support snd_soc_get_dai_id()

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ALSA SoC needs to know connected DAI ID for detecting.
It is not a big problem if device/driver was only for sound,
but getting DAI ID will be difficult if device includes both
Video/Sound, like HDMI.
To solve this issue, this patch adds new snd_soc_get_dai_id() and
its related .of_xlate_dai_id callback on component driver.
In below case, we can handle Sound port (= port@2) as ID = 0
if .of_xlate_dai_id has its support.

	hdmi {
		port@0 { /* VIDEO */ };
		port@1 { /* VIDEO */ };
		port@2 { /* SOUND */ };
	};

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto
2017-05-18 01:39:44 +00:00
committed by Mark Brown
parent 7932787f03
commit 73b17f1a65
1 changed files with 9 additions and 0 deletions
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9
sound/soc/generic/simple-card-utils.c
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@@ -177,9 +177,18 @@ static int asoc_simple_card_get_dai_id(struct device_node *ep)
struct device_node *node;
struct device_node *endpoint;
int i, id;
int ret;
ret = snd_soc_get_dai_id(ep);
if (ret != -ENOTSUPP)
return ret;
node = of_graph_get_port_parent(ep);
/*
* Non HDMI sound case, counting port/endpoint on its DT
* is enough. Let's count it.
*/
i = 0;
id = -1;
for_each_endpoint_of_node(node, endpoint) {