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| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2021-10-12 13:54:01 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-10-15 16:10:36 +0100 |
| commit | 92939252458fa279d0013e5dc545a98a4ca4064a (patch) | |
| tree | 3e9cf9e37a4ec9d919dc52fe1ef9fea6c8f8f913 /sound/soc/generic | |
| parent | d293abc0c8fbb7b1610b9f7497323028b06cd5f8 (diff) | |
| download | linux-92939252458fa279d0013e5dc545a98a4ca4064a.tar.bz2 | |
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>
Diffstat (limited to 'sound/soc/generic')
| -rw-r--r-- | sound/soc/generic/simple-card-utils.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c index 10c63b73900c..fd893d20ccc7 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@renesas.com>"); MODULE_DESCRIPTION("ALSA SoC Simple Card Utils"); |