SoC audio cards may have many CODECs per audio link.
This patch exports a core function to handle such links
when they are described in the DT.
Signed-off-by: Jean-Francois Moine <moin...@free.fr>
---
include/sound/soc.h | 3 +++
sound/soc/soc-core.c | 75 +++++++++++++++++++++++++++++++++++++++++-----------
2 files changed, 63 insertions(+), 15 deletions(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 7ba7130..a255f8b 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1451,6 +1451,9 @@ unsigned int snd_soc_of_parse_daifmt(struct device_node
*np,
struct device_node **framemaster);
int snd_soc_of_get_dai_name(struct device_node *of_node,
const char **dai_name);
+int snd_soc_of_get_dai_link_codecs(struct device_node *of_node,
+ const char *list_name,
+ struct snd_soc_dai_link *dai_link);
#include <sound/soc-dai.h>
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 3818cf3..e585d6d 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3724,36 +3724,30 @@ unsigned int snd_soc_of_parse_daifmt(struct device_node
*np,
}
EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
-int snd_soc_of_get_dai_name(struct device_node *of_node,
- const char **dai_name)
+static int snd_soc_get_dai_name(struct of_phandle_args *args,
+ const char **dai_name)
{
struct snd_soc_component *pos;
- struct of_phandle_args args;
- int ret;
-
- ret = of_parse_phandle_with_args(of_node, "sound-dai",
- "#sound-dai-cells", 0, &args);
- if (ret)
- return ret;
-
- ret = -EPROBE_DEFER;
+ int ret = -EPROBE_DEFER;
mutex_lock(&client_mutex);
list_for_each_entry(pos, &component_list, list) {
- if (pos->dev->of_node != args.np)
+ if (pos->dev->of_node != args->np)
continue;
if (pos->driver->of_xlate_dai_name) {
- ret = pos->driver->of_xlate_dai_name(pos, &args,
dai_name);
+ ret = pos->driver->of_xlate_dai_name(pos,
+ args,
+ dai_name);
} else {
int id = -1;
- switch (args.args_count) {
+ switch (args->args_count) {
case 0:
id = 0; /* same as dai_drv[0] */
break;
case 1:
- id = args.args[0];
+ id = args->args[0];
break;
default:
/* not supported */
@@ -3775,6 +3769,21 @@ int snd_soc_of_get_dai_name(struct device_node *of_node,
break;
}
mutex_unlock(&client_mutex);
+ return ret;
+}
+
+int snd_soc_of_get_dai_name(struct device_node *of_node,
+ const char **dai_name)
+{
+ struct of_phandle_args args;
+ int ret;
+
+ ret = of_parse_phandle_with_args(of_node, "sound-dai",
+ "#sound-dai-cells", 0, &args);
+ if (ret)
+ return ret;
+
+ ret = snd_soc_get_dai_name(&args, dai_name);
of_node_put(args.np);
@@ -3782,6 +3791,42 @@ int snd_soc_of_get_dai_name(struct device_node *of_node,
}
EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
+int snd_soc_of_get_dai_link_codecs(struct device_node *of_node,
+ const char *list_name,
+ struct snd_soc_dai_link *dai_link)
+{
+ struct of_phandle_args args;
+ struct snd_soc_dai_link_component *component;
+ int index, ret;
+
+ for (index = 0, component = dai_link->codecs;
+ index < dai_link->num_codecs;
+ index++, component++) {
+ ret = of_parse_phandle_with_args(of_node, list_name,
+ "#sound-dai-cells",
+ index, &args);
+ if (ret)
+ goto err;
+ component->of_node = args.np;
+ ret = snd_soc_get_dai_name(&args, &component->dai_name);
+ if (ret < 0)
+ goto err;
+ }
+ return 0;
+
+err:
+ for (index = 0, component = dai_link->codecs;
+ index < dai_link->num_codecs;
+ index++, component++) {
+ if (!component->of_node)
+ break;
+ of_node_put((struct device_node *) component->of_node);
+ component->of_node = NULL;
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
+
static int __init snd_soc_init(void)
{
#ifdef CONFIG_DEBUG_FS
--
2.1.1
--
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