ASoC: Add SND_SOC_DAPM_PIN_SWITCH controls for exposing DAPM pins

[linux-2.6-omap-h63xx.git] / sound / soc / soc-dapm.c

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index f4a8753c84c05888f4f07c1e19bdbca6b700d994..4b8dbbfe2efb4735bd7ed40b105bf1661652cb7b 100644 (file)
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1420,6 +1420,76 @@ out:
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
 
+/**
+ * snd_soc_dapm_info_pin_switch - Info for a pin switch
+ *
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to provide information about a pin switch control.
+ */
+int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
+                                struct snd_ctl_elem_info *uinfo)
+{
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+       uinfo->count = 1;
+       uinfo->value.integer.min = 0;
+       uinfo->value.integer.max = 1;
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
+
+/**
+ * snd_soc_dapm_get_pin_switch - Get information for a pin switch
+ *
+ * @kcontrol: mixer control
+ * @ucontrol: Value
+ */
+int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_value *ucontrol)
+{
+       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+       const char *pin = (const char *)kcontrol->private_value;
+
+       mutex_lock(&codec->mutex);
+
+       ucontrol->value.integer.value[0] =
+               snd_soc_dapm_get_pin_status(codec, pin);
+
+       mutex_unlock(&codec->mutex);
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
+
+/**
+ * snd_soc_dapm_put_pin_switch - Set information for a pin switch
+ *
+ * @kcontrol: mixer control
+ * @ucontrol: Value
+ */
+int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_value *ucontrol)
+{
+       struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+       const char *pin = (const char *)kcontrol->private_value;
+
+       mutex_lock(&codec->mutex);
+
+       if (ucontrol->value.integer.value[0])
+               snd_soc_dapm_enable_pin(codec, pin);
+       else
+               snd_soc_dapm_disable_pin(codec, pin);
+
+       snd_soc_dapm_sync(codec);
+
+       mutex_unlock(&codec->mutex);
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
+
 /**
  * snd_soc_dapm_new_control - create new dapm control
  * @codec: audio codec