Current ASoC is specifying and checking DAI name.
But where it came from and how to check was ambiguous.
This patch adds snd_soc_dai_name_get() / snd_soc_dlc_dai_is_match()
and makes it clear.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
include/sound/soc-dai.h | 2 ++
sound/soc/soc-core.c | 62 +++++++++++++++++++++++++++++++----------
2 files changed, 49 insertions(+), 15 deletions(-)
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index e3906ecda740..a4538040e88d 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -271,6 +271,8 @@ int snd_soc_dai_compr_get_metadata(struct snd_soc_dai *dai,
struct snd_compr_stream *cstream,
struct snd_compr_metadata *metadata);
+const char *snd_soc_dai_name_get(struct snd_soc_dai *dai);
+
struct snd_soc_dai_ops {
/*
* DAI clocking configuration, all optional.
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 4b66c6d87fa2..bd811d10b792 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -253,6 +253,47 @@ static inline int snd_soc_dlc_dai_is_empty(struct snd_soc_dai_link_component *dl
return !dlc->dai_name;
}
+static int snd_soc_is_matching_dai(const struct snd_soc_dai_link_component *dlc,
+ struct snd_soc_dai *dai)
+{
+ if (!dlc)
+ return 0;
+
+ if (!dlc->dai_name)
+ return 1;
+
+ /* see snd_soc_dai_name_get() */
+
+ if (strcmp(dlc->dai_name, dai->name) == 0)
+ return 1;
+
+ if (dai->driver->name &&
+ strcmp(dai->driver->name, dlc->dai_name) == 0)
+ return 1;
+
+ if (dai->component->name &&
+ strcmp(dlc->dai_name, dai->component->name) == 0)
+ return 1;
+
+ return 0;
+}
+
+const char *snd_soc_dai_name_get(struct snd_soc_dai *dai)
+{
+ /* see snd_soc_is_matching_dai() */
+ if (dai->name)
+ return dai->name;
+
+ if (dai->driver->name)
+ return dai->driver->name;
+
+ if (dai->component->name)
+ return dai->component->name;
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_name_get);
+
static int snd_soc_rtd_add_component(struct snd_soc_pcm_runtime *rtd,
struct snd_soc_component *component)
{
@@ -810,18 +851,11 @@ struct snd_soc_dai *snd_soc_find_dai(
lockdep_assert_held(&client_mutex);
/* Find CPU DAI from registered DAIs */
- for_each_component(component) {
- if (!snd_soc_is_matching_component(dlc, component))
- continue;
- for_each_component_dais(component, dai) {
- if (dlc->dai_name && strcmp(dai->name, dlc->dai_name)
- && (!dai->driver->name
- || strcmp(dai->driver->name, dlc->dai_name)))
- continue;
-
- return dai;
- }
- }
+ for_each_component(component)
+ if (snd_soc_is_matching_component(dlc, component))
+ for_each_component_dais(component, dai)
+ if (snd_soc_is_matching_dai(dlc, dai))
+ return dai;
return NULL;
}
@@ -3315,9 +3349,7 @@ int snd_soc_get_dlc(const struct of_phandle_args *args, struct snd_soc_dai_link_
}
dlc->of_node = args->np;
- dlc->dai_name = dai->driver->name;
- if (!dlc->dai_name)
- dlc->dai_name = pos->name;
+ dlc->dai_name = snd_soc_dai_name_get(dai);
} else if (ret) {
/*
* if another error than ENOTSUPP is returned go on and
--
2.25.1
