4 files changed, 131 insertions, 38 deletions

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index c20602f601ee..98a14f6143a7 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -222,27 +222,19 @@ static void arizona_extcon_pulse_micbias(struct arizona_extcon_info *info)
         struct snd_soc_dapm_context *dapm = arizona->dapm;
         int ret;
 
-        mutex_lock(&dapm->card->dapm_mutex);
-
         ret = snd_soc_dapm_force_enable_pin(dapm, widget);
         if (ret != 0)
                 dev_warn(arizona->dev, "Failed to enable %s: %d\n",
                          widget, ret);
 
-        mutex_unlock(&dapm->card->dapm_mutex);
-
         snd_soc_dapm_sync(dapm);
 
         if (!arizona->pdata.micd_force_micbias) {
-                mutex_lock(&dapm->card->dapm_mutex);
-
                 ret = snd_soc_dapm_disable_pin(arizona->dapm, widget);
                 if (ret != 0)
                         dev_warn(arizona->dev, "Failed to disable %s: %d\n",
                                  widget, ret);
 
-                mutex_unlock(&dapm->card->dapm_mutex);
-
                 snd_soc_dapm_sync(dapm);
         }
 }
@@ -304,16 +296,12 @@ static void arizona_stop_mic(struct arizona_extcon_info *info)
                                  ARIZONA_MICD_ENA, 0,
                                  &change);
 
-        mutex_lock(&dapm->card->dapm_mutex);
-
         ret = snd_soc_dapm_disable_pin(dapm, widget);
         if (ret != 0)
                 dev_warn(arizona->dev,
                          "Failed to disable %s: %d\n",
                          widget, ret);
 
-        mutex_unlock(&dapm->card->dapm_mutex);
-
         snd_soc_dapm_sync(dapm);
 
         if (info->micd_reva) {
diff --git a/drivers/input/misc/arizona-haptics.c b/drivers/input/misc/arizona-haptics.c
index e7e12a5f5c2d..ef2e281b0a43 100644
--- a/drivers/input/misc/arizona-haptics.c
+++ b/drivers/input/misc/arizona-haptics.c
@@ -37,7 +37,6 @@ static void arizona_haptics_work(struct work_struct *work)
                                                        struct arizona_haptics,
                                                        work);
         struct arizona *arizona = haptics->arizona;
-        struct mutex *dapm_mutex = &arizona->dapm->card->dapm_mutex;
         int ret;
 
         if (!haptics->arizona->dapm) {
@@ -67,18 +66,13 @@ static void arizona_haptics_work(struct work_struct *work)
                         return;
                 }
 
-                mutex_lock_nested(dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
-
                 ret = snd_soc_dapm_enable_pin(arizona->dapm, "HAPTICS");
                 if (ret != 0) {
                         dev_err(arizona->dev, "Failed to start HAPTICS: %d\n",
                                 ret);
-                        mutex_unlock(dapm_mutex);
                         return;
                 }
 
-                mutex_unlock(dapm_mutex);
-
                 ret = snd_soc_dapm_sync(arizona->dapm);
                 if (ret != 0) {
                         dev_err(arizona->dev, "Failed to sync DAPM: %d\n",
@@ -87,18 +81,13 @@ static void arizona_haptics_work(struct work_struct *work)
                 }
         } else {
                 /* This disable sequence will be a noop if already enabled */
-                mutex_lock_nested(dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
-
                 ret = snd_soc_dapm_disable_pin(arizona->dapm, "HAPTICS");
                 if (ret != 0) {
                         dev_err(arizona->dev, "Failed to disable HAPTICS: %d\n",
                                 ret);
-                        mutex_unlock(dapm_mutex);
                         return;
                 }
 
-                mutex_unlock(dapm_mutex);
-
                 ret = snd_soc_dapm_sync(arizona->dapm);
                 if (ret != 0) {
                         dev_err(arizona->dev, "Failed to sync DAPM: %d\n",
@@ -152,16 +141,11 @@ static int arizona_haptics_play(struct input_dev *input, void *data,
 static void arizona_haptics_close(struct input_dev *input)
 {
         struct arizona_haptics *haptics = input_get_drvdata(input);
-        struct mutex *dapm_mutex = &haptics->arizona->dapm->card->dapm_mutex;
 
         cancel_work_sync(&haptics->work);
 
-        mutex_lock_nested(dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
-
         if (haptics->arizona->dapm)
                 snd_soc_dapm_disable_pin(haptics->arizona->dapm, "HAPTICS");
-
-        mutex_unlock(dapm_mutex);
 }
 
 static int arizona_haptics_probe(struct platform_device *pdev)
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 68d92e36facd..6e89ef6c11c1 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -449,14 +449,22 @@ void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
 /* dapm audio pin control and status */
 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm,
                             const char *pin);
+int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
+                                     const char *pin);
 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
                              const char *pin);
+int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
+                                      const char *pin);
 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin);
+int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
+                                 const char *pin);
 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
                                 const char *pin);
 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm);
 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
                                   const char *pin);
+int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
+                                           const char *pin);
 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
                                 const char *pin);
 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec);
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index fd39cd2827d7..b9dc6acbba8c 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -3210,15 +3210,11 @@ int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
         const char *pin = (const char *)kcontrol->private_value;
 
-        mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
-
         if (ucontrol->value.integer.value[0])
                 snd_soc_dapm_enable_pin(&card->dapm, pin);
         else
                 snd_soc_dapm_disable_pin(&card->dapm, pin);
 
-        mutex_unlock(&card->dapm_mutex);
-
         snd_soc_dapm_sync(&card->dapm);
         return 0;
 }
@@ -3767,23 +3763,52 @@ void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
 }
 
 /**
+ * snd_soc_dapm_enable_pin_unlocked - enable pin.
+ * @dapm: DAPM context
+ * @pin: pin name
+ *
+ * Enables input/output pin and its parents or children widgets iff there is
+ * a valid audio route and active audio stream.
+ *
+ * Requires external locking.
+ *
+ * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
+ * do any widget power switching.
+ */
+int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
+                                   const char *pin)
+{
+        return snd_soc_dapm_set_pin(dapm, pin, 1);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
+
+/**
  * snd_soc_dapm_enable_pin - enable pin.
  * @dapm: DAPM context
  * @pin: pin name
  *
  * Enables input/output pin and its parents or children widgets iff there is
  * a valid audio route and active audio stream.
+ *
  * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
  * do any widget power switching.
  */
 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
 {
-        return snd_soc_dapm_set_pin(dapm, pin, 1);
+        int ret;
+
+        mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+
+        ret = snd_soc_dapm_set_pin(dapm, pin, 1);
+
+        mutex_unlock(&dapm->card->dapm_mutex);
+
+        return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
 
 /**
- * snd_soc_dapm_force_enable_pin - force a pin to be enabled
+ * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
  * @dapm: DAPM context
  * @pin: pin name
  *
@@ -3791,11 +3816,13 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
  * intended for use with microphone bias supplies used in microphone
  * jack detection.
  *
+ * Requires external locking.
+ *
  * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
  * do any widget power switching.
  */
-int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
-                                  const char *pin)
+int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
+                                         const char *pin)
 {
         struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
 
@@ -3811,25 +3838,103 @@ int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
 
         return 0;
 }
+EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
+
+/**
+ * snd_soc_dapm_force_enable_pin - force a pin to be enabled
+ * @dapm: DAPM context
+ * @pin: pin name
+ *
+ * Enables input/output pin regardless of any other state.  This is
+ * intended for use with microphone bias supplies used in microphone
+ * jack detection.
+ *
+ * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
+ * do any widget power switching.
+ */
+int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
+                                  const char *pin)
+{
+        int ret;
+
+        mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+
+        ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
+
+        mutex_unlock(&dapm->card->dapm_mutex);
+
+        return ret;
+}
 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
 
 /**
+ * snd_soc_dapm_disable_pin_unlocked - disable pin.
+ * @dapm: DAPM context
+ * @pin: pin name
+ *
+ * Disables input/output pin and its parents or children widgets.
+ *
+ * Requires external locking.
+ *
+ * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
+ * do any widget power switching.
+ */
+int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
+                                    const char *pin)
+{
+        return snd_soc_dapm_set_pin(dapm, pin, 0);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
+
+/**
  * snd_soc_dapm_disable_pin - disable pin.
  * @dapm: DAPM context
  * @pin: pin name
  *
  * Disables input/output pin and its parents or children widgets.
+ *
  * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
  * do any widget power switching.
  */
 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
                              const char *pin)
 {
-        return snd_soc_dapm_set_pin(dapm, pin, 0);
+        int ret;
+
+        mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+
+        ret = snd_soc_dapm_set_pin(dapm, pin, 0);
+
+        mutex_unlock(&dapm->card->dapm_mutex);
+
+        return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
 
 /**
+ * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
+ * @dapm: DAPM context
+ * @pin: pin name
+ *
+ * Marks the specified pin as being not connected, disabling it along
+ * any parent or child widgets.  At present this is identical to
+ * snd_soc_dapm_disable_pin() but in future it will be extended to do
+ * additional things such as disabling controls which only affect
+ * paths through the pin.
+ *
+ * Requires external locking.
+ *
+ * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
+ * do any widget power switching.
+ */
+int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
+                               const char *pin)
+{
+        return snd_soc_dapm_set_pin(dapm, pin, 0);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
+
+/**
  * snd_soc_dapm_nc_pin - permanently disable pin.
  * @dapm: DAPM context
  * @pin: pin name
@@ -3845,7 +3950,15 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
  */
 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
 {
-        return snd_soc_dapm_set_pin(dapm, pin, 0);
+        int ret;
+
+        mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+
+        ret = snd_soc_dapm_set_pin(dapm, pin, 0);
+
+        mutex_unlock(&dapm->card->dapm_mutex);
+
+        return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);