[PATCH 4/7] ASoC: add snd_soc_get_dai_id()
From: Kuninori Morimoto <hidden>
Date: 2017-02-13 02:01:31
Also in:
alsa-devel
Subsystem:
sound, sound - soc layer / dynamic audio power management (asoc), the rest · Maintainers:
Jaroslav Kysela, Takashi Iwai, Liam Girdwood, Mark Brown, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2017-03-02 · [PATCH 4/7] ASoC: add snd_soc_get_dai_id() · Kuninori Morimoto <hidden>
From: Kuninori Morimoto <redacted> ALSA SoC needs to know connected DAI ID for probing. On OF-graph case, basically we can check DT port location. Signed-off-by: Kuninori Morimoto <redacted> --- include/sound/soc.h | 1 + sound/soc/soc-core.c | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+)
diff --git a/include/sound/soc.h b/include/sound/soc.h
index cdfb55f..ab4639e 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h@@ -1664,6 +1664,7 @@ unsigned int snd_soc_of_parse_daifmt(struct device_node *np, const char *prefix, struct device_node **bitclkmaster, struct device_node **framemaster); +int snd_soc_get_dai_id(struct device_node *ep); int snd_soc_get_dai_name(struct of_phandle_args *args, const char **dai_name); int snd_soc_of_get_dai_name(struct device_node *of_node,
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index a110d39..67901a3 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c@@ -34,6 +34,7 @@ #include <linux/ctype.h> #include <linux/slab.h> #include <linux/of.h> +#include <linux/of_graph.h> #include <linux/dmi.h> #include <sound/core.h> #include <sound/jack.h>
@@ -4035,6 +4036,28 @@ unsigned int snd_soc_of_parse_daifmt(struct device_node *np, } EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt); +int snd_soc_get_dai_id(struct device_node *ep) +{ + struct device_node *node; + struct device_node *endpoint; + int i, id; + + node = of_graph_get_port_parent(ep); + + i = 0; + id = -1; + for_each_endpoint_of_node(node, endpoint) { + if (endpoint == ep) + id = i; + i++; + } + if (id < 0) + return -ENODEV; + + return id; +} +EXPORT_SYMBOL_GPL(snd_soc_get_dai_id); + int snd_soc_get_dai_name(struct of_phandle_args *args, const char **dai_name) {
--
1.9.1
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