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ASoC: simple-card-utils: add asoc_graph_is_ports0() 

audio-graph-card2 will support DPCM/Multi/Codec2Codec,
and these will use almost same DT settings which uses
ports0 and ports1.
This patch adds asoc_graph_is_ports0() which checks
port is under port0 or not.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/875yu2n8ra.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2021-10-12 13:54:01 +09:00 committed by Mark Brown
parent d293abc0c8
commit 9293925245
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2 changed files with 29 additions and 0 deletions
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1
include/sound/simple_card_utils.h
View File

@ -180,6 +180,7 @@ int asoc_simple_init_priv(struct asoc_simple_priv *priv,
int asoc_simple_remove(struct platform_device *pdev);
int asoc_graph_card_probe(struct snd_soc_card *card);
int asoc_graph_is_ports0(struct device_node *port);
#ifdef DEBUG
static inline void asoc_simple_debug_dai(struct asoc_simple_priv *priv,

28
sound/soc/generic/simple-card-utils.c
View File

@ -759,6 +759,34 @@ int asoc_graph_card_probe(struct snd_soc_card *card)
}
EXPORT_SYMBOL_GPL(asoc_graph_card_probe);
int asoc_graph_is_ports0(struct device_node *np)
{
struct device_node *port, *ports, *ports0, *top;
int ret;
/* np is "endpoint" or "port" */
if (of_node_name_eq(np, "endpoint")) {
port = of_get_parent(np);
} else {
port = np;
of_node_get(port);
}
ports = of_get_parent(port);
top = of_get_parent(ports);
ports0 = of_get_child_by_name(top, "ports");
ret = ports0 == ports;
of_node_put(port);
of_node_put(ports);
of_node_put(ports0);
of_node_put(top);
return ret;
}
EXPORT_SYMBOL_GPL(asoc_graph_is_ports0);
/* Module information */
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");