diff --git a/include/sound/soc.h b/include/sound/soc.h index 5170fd81e1fd0886c465225b72748c44792240d5..9c94b97c17f8ebc830f9ccac9e00c9a0b0e1d463 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -803,6 +803,8 @@ struct snd_soc_component_driver { int (*of_xlate_dai_name)(struct snd_soc_component *component, struct of_phandle_args *args, const char **dai_name); + int (*of_xlate_dai_id)(struct snd_soc_component *comment, + struct device_node *endpoint); void (*seq_notifier)(struct snd_soc_component *, enum snd_soc_dapm_type, int subseq); int (*stream_event)(struct snd_soc_component *, int event); @@ -1676,6 +1678,7 @@ 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 ab7a07f86ab8dd9966a97c9e1e87321826b03626..9ba1837810171f14782b4da155b6c3b071e6ffc0 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -34,6 +34,7 @@ #include #include #include +#include #include #include #include @@ -4048,6 +4049,42 @@ 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 snd_soc_component *pos; + struct device_node *node; + int ret; + + node = of_graph_get_port_parent(ep); + + /* + * For example HDMI case, HDMI has video/sound port, + * but ALSA SoC needs sound port number only. + * Thus counting HDMI DT port/endpoint doesn't work. + * Then, it should have .of_xlate_dai_id + */ + ret = -ENOTSUPP; + mutex_lock(&client_mutex); + list_for_each_entry(pos, &component_list, list) { + struct device_node *component_of_node = pos->dev->of_node; + + if (!component_of_node && pos->dev->parent) + component_of_node = pos->dev->parent->of_node; + + if (component_of_node != node) + continue; + + if (pos->driver->of_xlate_dai_id) + ret = pos->driver->of_xlate_dai_id(pos, ep); + + break; + } + mutex_unlock(&client_mutex); + + return ret; +} +EXPORT_SYMBOL_GPL(snd_soc_get_dai_id); + int snd_soc_get_dai_name(struct of_phandle_args *args, const char **dai_name) {