---

yaml
---
r: 193367
b: refs/heads/master
c: d5021ec
h: refs/heads/master
i:
  193365: 1f6a677
  193363: 9b360e6
  193359: d04326d
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c96907f21f26a1f8c1a1a9096a22500e4d158c4f
+refs/heads/master: d5021ec9fc32edc6f512c2375923d757e9825f6a

trunk/include/sound/soc.h

@@ -15,6 +15,7 @@
 
 #include <linux/platform_device.h>
 #include <linux/types.h>
+#include <linux/notifier.h>
 #include <linux/workqueue.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
@@ -261,6 +262,10 @@ int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type,
 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
 			  struct snd_soc_jack_pin *pins);
+void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
+				    struct notifier_block *nb);
+void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
+				      struct notifier_block *nb);
 #ifdef CONFIG_GPIOLIB
 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 			struct snd_soc_jack_gpio *gpios);
@@ -364,6 +369,7 @@ struct snd_soc_jack {
 	struct snd_soc_card *card;
 	struct list_head pins;
 	int status;
+	struct blocking_notifier_head notifier;
 };
 
 /* SoC PCM stream information */

trunk/sound/soc/soc-jack.c

@@ -37,6 +37,7 @@ int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type,
 {
 	jack->card = card;
 	INIT_LIST_HEAD(&jack->pins);
+	BLOCKING_INIT_NOTIFIER_HEAD(&jack->notifier);
 
 	return snd_jack_new(card->codec->card, id, type, &jack->jack);
 }
@@ -93,6 +94,9 @@ void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask)
 			snd_soc_dapm_disable_pin(codec, pin->pin);
 	}
 
+	/* Report before the DAPM sync to help users updating micbias status */
+	blocking_notifier_call_chain(&jack->notifier, status, NULL);
+
 	snd_soc_dapm_sync(codec);
 
 	snd_jack_report(jack->jack, status);
@@ -143,6 +147,40 @@ int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
 }
 EXPORT_SYMBOL_GPL(snd_soc_jack_add_pins);
 
+/**
+ * snd_soc_jack_notifier_register - Register a notifier for jack status
+ *
+ * @jack:  ASoC jack
+ * @nb:    Notifier block to register
+ *
+ * Register for notification of the current status of the jack.  Note
+ * that it is not possible to report additional jack events in the
+ * callback from the notifier, this is intended to support
+ * applications such as enabling electrical detection only when a
+ * mechanical detection event has occurred.
+ */
+void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
+				    struct notifier_block *nb)
+{
+	blocking_notifier_chain_register(&jack->notifier, nb);
+}
+EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_register);
+
+/**
+ * snd_soc_jack_notifier_unregister - Unregister a notifier for jack status
+ *
+ * @jack:  ASoC jack
+ * @nb:    Notifier block to unregister
+ *
+ * Stop notifying for status changes.
+ */
+void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
+				      struct notifier_block *nb)
+{
+	blocking_notifier_chain_unregister(&jack->notifier, nb);
+}
+EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_unregister);
+
 #ifdef CONFIG_GPIOLIB
 /* gpio detect */
 static void snd_soc_jack_gpio_detect(struct snd_soc_jack_gpio *gpio)