From: Graeme Gregory <graeme@xxxxxxxxxxxx>
This adds a hook to read the power state of a DAPM widget, I use this
in the gta02 driver to expose certain DAPM widgets in the mixer for
ease of audio routing.
Signed-off-by: Graeme Gregory <graeme@xxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
include/sound/soc-dapm.h | 2 ++
sound/soc/soc-dapm.c | 23 +++++++++++++++++++++++
2 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index a105b01..40cc695 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -223,6 +223,8 @@ int snd_soc_dapm_sys_add(struct device *dev);
/* dapm audio endpoint control */
int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,
char *pin, int status);
+int snd_soc_dapm_get_endpoint_status(struct snd_soc_codec *codec,
+ char *pin);
int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec);
/* dapm widget types */
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index af3326c..9fd5ee8 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1343,6 +1343,29 @@ int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,
EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint);
/**
+ * snd_soc_dapm_get_endpoint_status - get audio endpoint status
+ * @codec: audio codec
+ * @endpoint: audio signal endpoint (or start point)
+ *
+ * Get audio endpoint status - connected or disconnected.
+ *
+ * Returns status
+ */
+int snd_soc_dapm_get_endpoint_status(struct snd_soc_codec *codec,
+ char *endpoint)
+{
+ struct snd_soc_dapm_widget *w;
+
+ list_for_each_entry(w, &codec->dapm_widgets, list) {
+ if (!strcmp(w->name, endpoint))
+ return w->connected;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_get_endpoint);
+
+/**
* snd_soc_dapm_free - free dapm resources
* @socdev: SoC device
*
--
1.5.5.1
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