From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
rich-graph-card 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@xxxxxxxxxxx>
---
include/sound/simple_card_utils.h | 1 +
sound/soc/generic/simple-card-utils.c | 28 +++++++++++++++++++++++++++
2 files changed, 29 insertions(+)
diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h
index 51b3b485a92e..520559b0a336 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -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,
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index 437a0e2ee113..22d4bdb7383b 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -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@xxxxxxxxxxx>");
MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
--
2.25.1
