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authorGraeme Gregory <graeme@openmoko.org>2008-04-30 19:27:40 +0200
committerJaroslav Kysela <perex@perex.cz>2008-05-19 13:19:14 +0200
commiteeec12bf7b7d80d1c9cae5aae0dff7e2f928c64b (patch)
tree34757a9cb4cc5f3c9a24699315e586db1668b578 /sound/soc/soc-dapm.c
parent54e7e6167d29a4a98207884b2fbd28b0b3fe91f6 (diff)
downloadop-kernel-dev-eeec12bf7b7d80d1c9cae5aae0dff7e2f928c64b.zip
op-kernel-dev-eeec12bf7b7d80d1c9cae5aae0dff7e2f928c64b.tar.gz
[ALSA] soc - DAPM - add hook to read state of DAPM widget
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@openmoko.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/soc/soc-dapm.c')
-rw-r--r--sound/soc/soc-dapm.c23
1 files changed, 23 insertions, 0 deletions
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
*
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