ASoC: dapm: Add snd_soc_dapm_kcontrol_widget()

Given a kcontrol, we may want to access the parent widget
and it's associated data. So export function to return it.
Signed-off-by: NMythri P K <mythri.p.k@intel.com>
Signed-off-by: NJeeja KP <jeeja.kp@intel.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

include/sound/soc-dapm.h

@@ -451,6 +451,9 @@ int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
 struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
 	struct snd_kcontrol *kcontrol);
 
+struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
+		struct snd_kcontrol *kcontrol);
+
 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
 	enum snd_soc_bias_level level);
 

sound/soc/soc-dapm.c

@@ -508,6 +508,18 @@ static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
 	return true;
 }
 
+/**
+ * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a
+ *   kcontrol
+ * @kcontrol: The kcontrol
+ */
+struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
+				struct snd_kcontrol *kcontrol)
+{
+	return dapm_kcontrol_get_wlist(kcontrol)->widgets[0];
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget);
+
 /**
  * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
  *  kcontrol