1 files changed, 566 insertions, 324 deletions

diff --git a/kernel/sound/soc/soc-dapm.c b/kernel/sound/soc/soc-dapm.c
index b6c12dccb..416514fe9 100644
--- a/kernel/sound/soc/soc-dapm.c
+++ b/kernel/sound/soc/soc-dapm.c
@@ -47,15 +47,27 @@
 
 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
 
+#define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
+	SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
+
+#define snd_soc_dapm_for_each_direction(dir) \
+	for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
+		(dir)++)
+
 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
 	struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
 	const char *control,
 	int (*connected)(struct snd_soc_dapm_widget *source,
 			 struct snd_soc_dapm_widget *sink));
-static struct snd_soc_dapm_widget *
+
+struct snd_soc_dapm_widget *
 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 			 const struct snd_soc_dapm_widget *widget);
 
+struct snd_soc_dapm_widget *
+snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
+			 const struct snd_soc_dapm_widget *widget);
+
 /* dapm power sequences - make this per codec in the future */
 static int dapm_up_seq[] = {
 	[snd_soc_dapm_pre] = 0,
@@ -70,6 +82,7 @@ static int dapm_up_seq[] = {
 	[snd_soc_dapm_aif_out] = 4,
 	[snd_soc_dapm_mic] = 5,
 	[snd_soc_dapm_mux] = 6,
+	[snd_soc_dapm_demux] = 6,
 	[snd_soc_dapm_dac] = 7,
 	[snd_soc_dapm_switch] = 8,
 	[snd_soc_dapm_mixer] = 8,
@@ -100,6 +113,7 @@ static int dapm_down_seq[] = {
 	[snd_soc_dapm_mic] = 7,
 	[snd_soc_dapm_micbias] = 8,
 	[snd_soc_dapm_mux] = 9,
+	[snd_soc_dapm_demux] = 9,
 	[snd_soc_dapm_aif_in] = 10,
 	[snd_soc_dapm_aif_out] = 10,
 	[snd_soc_dapm_dai_in] = 10,
@@ -160,45 +174,59 @@ static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
 }
 
 /*
- * dapm_widget_invalidate_input_paths() - Invalidate the cached number of input
- *  paths
- * @w: The widget for which to invalidate the cached number of input paths
- *
- * The function resets the cached number of inputs for the specified widget and
- * all widgets that can be reached via outgoing paths from the widget.
- *
- * This function must be called if the number of input paths for a widget might
- * have changed. E.g. if the source state of a widget changes or a path is added
- * or activated with the widget as the sink.
+ * Common implementation for dapm_widget_invalidate_input_paths() and
+ * dapm_widget_invalidate_output_paths(). The function is inlined since the
+ * combined size of the two specialized functions is only marginally larger then
+ * the size of the generic function and at the same time the fast path of the
+ * specialized functions is significantly smaller than the generic function.
  */
-static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
+static __always_inline void dapm_widget_invalidate_paths(
+	struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
 {
-	struct snd_soc_dapm_widget *sink;
+	enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
+	struct snd_soc_dapm_widget *node;
 	struct snd_soc_dapm_path *p;
 	LIST_HEAD(list);
 
 	dapm_assert_locked(w->dapm);
 
-	if (w->inputs == -1)
+	if (w->endpoints[dir] == -1)
 		return;
 
-	w->inputs = -1;
 	list_add_tail(&w->work_list, &list);
+	w->endpoints[dir] = -1;
 
 	list_for_each_entry(w, &list, work_list) {
-		list_for_each_entry(p, &w->sinks, list_source) {
+		snd_soc_dapm_widget_for_each_path(w, dir, p) {
 			if (p->is_supply || p->weak || !p->connect)
 				continue;
-			sink = p->sink;
-			if (sink->inputs != -1) {
-				sink->inputs = -1;
-				list_add_tail(&sink->work_list, &list);
+			node = p->node[rdir];
+			if (node->endpoints[dir] != -1) {
+				node->endpoints[dir] = -1;
+				list_add_tail(&node->work_list, &list);
 			}
 		}
 	}
 }
 
 /*
+ * dapm_widget_invalidate_input_paths() - Invalidate the cached number of
+ *  input paths
+ * @w: The widget for which to invalidate the cached number of input paths
+ *
+ * Resets the cached number of inputs for the specified widget and all widgets
+ * that can be reached via outcoming paths from the widget.
+ *
+ * This function must be called if the number of output paths for a widget might
+ * have changed. E.g. if the source state of a widget changes or a path is added
+ * or activated with the widget as the sink.
+ */
+static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
+{
+	dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
+}
+
+/*
  * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
  *  output paths
  * @w: The widget for which to invalidate the cached number of output paths
@@ -212,29 +240,7 @@ static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
  */
 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
 {
-	struct snd_soc_dapm_widget *source;
-	struct snd_soc_dapm_path *p;
-	LIST_HEAD(list);
-
-	dapm_assert_locked(w->dapm);
-
-	if (w->outputs == -1)
-		return;
-
-	w->outputs = -1;
-	list_add_tail(&w->work_list, &list);
-
-	list_for_each_entry(w, &list, work_list) {
-		list_for_each_entry(p, &w->sources, list_sink) {
-			if (p->is_supply || p->weak || !p->connect)
-				continue;
-			source = p->source;
-			if (source->outputs != -1) {
-				source->outputs = -1;
-				list_add_tail(&source->work_list, &list);
-			}
-		}
-	}
+	dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
 }
 
 /*
@@ -263,9 +269,9 @@ static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
 	 * endpoints is either connected or disconnected that sum won't change,
 	 * so there is no need to re-check the path.
 	 */
-	if (p->source->inputs != 0)
+	if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
 		dapm_widget_invalidate_input_paths(p->sink);
-	if (p->sink->outputs != 0)
+	if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
 		dapm_widget_invalidate_output_paths(p->source);
 }
 
@@ -276,11 +282,11 @@ void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
 	mutex_lock(&card->dapm_mutex);
 
 	list_for_each_entry(w, &card->widgets, list) {
-		if (w->is_sink || w->is_source) {
+		if (w->is_ep) {
 			dapm_mark_dirty(w, "Rechecking endpoints");
-			if (w->is_sink)
+			if (w->is_ep & SND_SOC_DAPM_EP_SINK)
 				dapm_widget_invalidate_output_paths(w);
-			if (w->is_source)
+			if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
 				dapm_widget_invalidate_input_paths(w);
 		}
 	}
@@ -308,14 +314,13 @@ static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
 {
 	struct dapm_kcontrol_data *data;
 	struct soc_mixer_control *mc;
+	struct soc_enum *e;
+	const char *name;
+	int ret;
 
 	data = kzalloc(sizeof(*data), GFP_KERNEL);
-	if (!data) {
-		dev_err(widget->dapm->dev,
-				"ASoC: can't allocate kcontrol data for %s\n",
-				widget->name);
+	if (!data)
 		return -ENOMEM;
-	}
 
 	INIT_LIST_HEAD(&data->paths);
 
@@ -328,6 +333,13 @@ static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
 		if (mc->autodisable) {
 			struct snd_soc_dapm_widget template;
 
+			name = kasprintf(GFP_KERNEL, "%s %s", kcontrol->id.name,
+					 "Autodisable");
+			if (!name) {
+				ret = -ENOMEM;
+				goto err_data;
+			}
+
 			memset(&template, 0, sizeof(template));
 			template.reg = mc->reg;
 			template.mask = (1 << fls(mc->max)) - 1;
@@ -338,16 +350,55 @@ static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
 				template.off_val = 0;
 			template.on_val = template.off_val;
 			template.id = snd_soc_dapm_kcontrol;
-			template.name = kcontrol->id.name;
+			template.name = name;
 
 			data->value = template.on_val;
 
-			data->widget = snd_soc_dapm_new_control(widget->dapm,
+			data->widget =
+				snd_soc_dapm_new_control_unlocked(widget->dapm,
 				&template);
+			kfree(name);
 			if (!data->widget) {
-				kfree(data);
-				return -ENOMEM;
+				ret = -ENOMEM;
+				goto err_data;
+			}
+		}
+		break;
+	case snd_soc_dapm_demux:
+	case snd_soc_dapm_mux:
+		e = (struct soc_enum *)kcontrol->private_value;
+
+		if (e->autodisable) {
+			struct snd_soc_dapm_widget template;
+
+			name = kasprintf(GFP_KERNEL, "%s %s", kcontrol->id.name,
+					 "Autodisable");
+			if (!name) {
+				ret = -ENOMEM;
+				goto err_data;
+			}
+
+			memset(&template, 0, sizeof(template));
+			template.reg = e->reg;
+			template.mask = e->mask << e->shift_l;
+			template.shift = e->shift_l;
+			template.off_val = snd_soc_enum_item_to_val(e, 0);
+			template.on_val = template.off_val;
+			template.id = snd_soc_dapm_kcontrol;
+			template.name = name;
+
+			data->value = template.on_val;
+
+			data->widget = snd_soc_dapm_new_control_unlocked(
+						widget->dapm, &template);
+			kfree(name);
+			if (!data->widget) {
+				ret = -ENOMEM;
+				goto err_data;
 			}
+
+			snd_soc_dapm_add_path(widget->dapm, data->widget,
+					      widget, NULL, NULL);
 		}
 		break;
 	default:
@@ -357,6 +408,10 @@ static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
 	kcontrol->private_data = data;
 
 	return 0;
+
+err_data:
+	kfree(data);
+	return ret;
 }
 
 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
@@ -405,11 +460,6 @@ static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
 	struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
 
 	list_add_tail(&path->list_kcontrol, &data->paths);
-
-	if (data->widget) {
-		snd_soc_dapm_add_path(data->widget->dapm, data->widget,
-		    path->source, NULL, NULL);
-	}
 }
 
 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
@@ -459,6 +509,18 @@ static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
 }
 
 /**
+ * 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
  * @kcontrol: The kcontrol
@@ -525,6 +587,67 @@ static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
 		snd_soc_component_async_complete(dapm->component);
 }
 
+static struct snd_soc_dapm_widget *
+dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
+{
+	struct snd_soc_dapm_widget *w = wcache->widget;
+	struct list_head *wlist;
+	const int depth = 2;
+	int i = 0;
+
+	if (w) {
+		wlist = &w->dapm->card->widgets;
+
+		list_for_each_entry_from(w, wlist, list) {
+			if (!strcmp(name, w->name))
+				return w;
+
+			if (++i == depth)
+				break;
+		}
+	}
+
+	return NULL;
+}
+
+static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
+				      struct snd_soc_dapm_widget *w)
+{
+	wcache->widget = w;
+}
+
+/**
+ * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
+ * @dapm: The DAPM context for which to set the level
+ * @level: The level to set
+ *
+ * Forces the DAPM bias level to a specific state. It will call the bias level
+ * callback of DAPM context with the specified level. This will even happen if
+ * the context is already at the same level. Furthermore it will not go through
+ * the normal bias level sequencing, meaning any intermediate states between the
+ * current and the target state will not be entered.
+ *
+ * Note that the change in bias level is only temporary and the next time
+ * snd_soc_dapm_sync() is called the state will be set to the level as
+ * determined by the DAPM core. The function is mainly intended to be used to
+ * used during probe or resume from suspend to power up the device so
+ * initialization can be done, before the DAPM core takes over.
+ */
+int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
+	enum snd_soc_bias_level level)
+{
+	int ret = 0;
+
+	if (dapm->set_bias_level)
+		ret = dapm->set_bias_level(dapm, level);
+
+	if (ret == 0)
+		dapm->bias_level = level;
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
+
 /**
  * snd_soc_dapm_set_bias_level - set the bias level for the system
  * @dapm: DAPM context
@@ -547,10 +670,8 @@ static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
 	if (ret != 0)
 		goto out;
 
-	if (dapm->set_bias_level)
-		ret = dapm->set_bias_level(dapm, level);
-	else if (!card || dapm != &card->dapm)
-		dapm->bias_level = level;
+	if (!card || dapm != &card->dapm)
+		ret = snd_soc_dapm_force_bias_level(dapm, level);
 
 	if (ret != 0)
 		goto out;
@@ -565,9 +686,10 @@ out:
 
 /* connect mux widget to its interconnecting audio paths */
 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
-	struct snd_soc_dapm_path *path, const char *control_name)
+	struct snd_soc_dapm_path *path, const char *control_name,
+	struct snd_soc_dapm_widget *w)
 {
-	const struct snd_kcontrol_new *kcontrol = &path->sink->kcontrol_news[0];
+	const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	unsigned int val, item;
 	int i;
@@ -669,7 +791,7 @@ static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
  * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
  * create it. Either way, add the widget into the control's widget list
  */
-static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
+static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
 	int kci)
 {
 	struct snd_soc_dapm_context *dapm = w->dapm;
@@ -700,6 +822,7 @@ static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
 			switch (w->id) {
 			case snd_soc_dapm_switch:
 			case snd_soc_dapm_mixer:
+			case snd_soc_dapm_pga:
 				wname_in_long_name = true;
 				kcname_in_long_name = true;
 				break;
@@ -707,6 +830,7 @@ static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
 				wname_in_long_name = false;
 				kcname_in_long_name = true;
 				break;
+			case snd_soc_dapm_demux:
 			case snd_soc_dapm_mux:
 				wname_in_long_name = true;
 				kcname_in_long_name = false;
@@ -777,25 +901,30 @@ static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
 {
 	int i, ret;
 	struct snd_soc_dapm_path *path;
+	struct dapm_kcontrol_data *data;
 
 	/* add kcontrol */
 	for (i = 0; i < w->num_kcontrols; i++) {
 		/* match name */
-		list_for_each_entry(path, &w->sources, list_sink) {
+		snd_soc_dapm_widget_for_each_source_path(w, path) {
 			/* mixer/mux paths name must match control name */
 			if (path->name != (char *)w->kcontrol_news[i].name)
 				continue;
 
-			if (w->kcontrols[i]) {
-				dapm_kcontrol_add_path(w->kcontrols[i], path);
-				continue;
+			if (!w->kcontrols[i]) {
+				ret = dapm_create_or_share_kcontrol(w, i);
+				if (ret < 0)
+					return ret;
 			}
 
-			ret = dapm_create_or_share_mixmux_kcontrol(w, i);
-			if (ret < 0)
-				return ret;
-
 			dapm_kcontrol_add_path(w->kcontrols[i], path);
+
+			data = snd_kcontrol_chip(w->kcontrols[i]);
+			if (data->widget)
+				snd_soc_dapm_add_path(data->widget->dapm,
+						      data->widget,
+						      path->source,
+						      NULL, NULL);
 		}
 	}
 
@@ -806,26 +935,41 @@ static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
 {
 	struct snd_soc_dapm_context *dapm = w->dapm;
+	enum snd_soc_dapm_direction dir;
 	struct snd_soc_dapm_path *path;
+	const char *type;
 	int ret;
 
+	switch (w->id) {
+	case snd_soc_dapm_mux:
+		dir = SND_SOC_DAPM_DIR_OUT;
+		type = "mux";
+		break;
+	case snd_soc_dapm_demux:
+		dir = SND_SOC_DAPM_DIR_IN;
+		type = "demux";
+		break;
+	default:
+		return -EINVAL;
+	}
+
 	if (w->num_kcontrols != 1) {
 		dev_err(dapm->dev,
-			"ASoC: mux %s has incorrect number of controls\n",
+			"ASoC: %s %s has incorrect number of controls\n", type,
 			w->name);
 		return -EINVAL;
 	}
 
-	if (list_empty(&w->sources)) {
-		dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name);
+	if (list_empty(&w->edges[dir])) {
+		dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
 		return -EINVAL;
 	}
 
-	ret = dapm_create_or_share_mixmux_kcontrol(w, 0);
+	ret = dapm_create_or_share_kcontrol(w, 0);
 	if (ret < 0)
 		return ret;
 
-	list_for_each_entry(path, &w->sources, list_sink) {
+	snd_soc_dapm_widget_for_each_path(w, dir, path) {
 		if (path->name)
 			dapm_kcontrol_add_path(w->kcontrols[0], path);
 	}
@@ -836,9 +980,13 @@ static int dapm_new_mux(struct snd_soc_dapm_widget *w)
 /* create new dapm volume control */
 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
 {
-	if (w->num_kcontrols)
-		dev_err(w->dapm->dev,
-			"ASoC: PGA controls not supported: '%s'\n", w->name);
+	int i, ret;
+
+	for (i = 0; i < w->num_kcontrols; i++) {
+		ret = dapm_create_or_share_kcontrol(w, i);
+		if (ret < 0)
+			return ret;
+	}
 
 	return 0;
 }
@@ -893,66 +1041,59 @@ static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
 	}
 }
 
-/* add widget to list if it's not already in the list */
-static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
-	struct snd_soc_dapm_widget *w)
+static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
+	struct list_head *widgets)
 {
-	struct snd_soc_dapm_widget_list *wlist;
-	int wlistsize, wlistentries, i;
-
-	if (*list == NULL)
-		return -EINVAL;
-
-	wlist = *list;
+	struct snd_soc_dapm_widget *w;
+	struct list_head *it;
+	unsigned int size = 0;
+	unsigned int i = 0;
 
-	/* is this widget already in the list */
-	for (i = 0; i < wlist->num_widgets; i++) {
-		if (wlist->widgets[i] == w)
-			return 0;
-	}
+	list_for_each(it, widgets)
+		size++;
 
-	/* allocate some new space */
-	wlistentries = wlist->num_widgets + 1;
-	wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
-			wlistentries * sizeof(struct snd_soc_dapm_widget *);
-	*list = krealloc(wlist, wlistsize, GFP_KERNEL);
-	if (*list == NULL) {
-		dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
-			w->name);
+	*list = kzalloc(sizeof(**list) + size * sizeof(*w), GFP_KERNEL);
+	if (*list == NULL)
 		return -ENOMEM;
-	}
-	wlist = *list;
 
-	/* insert the widget */
-	dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
-			w->name, wlist->num_widgets);
+	list_for_each_entry(w, widgets, work_list)
+		(*list)->widgets[i++] = w;
 
-	wlist->widgets[wlist->num_widgets] = w;
-	wlist->num_widgets++;
-	return 1;
+	(*list)->num_widgets = i;
+
+	return 0;
 }
 
 /*
- * Recursively check for a completed path to an active or physically connected
- * output widget. Returns number of complete paths.
+ * Common implementation for is_connected_output_ep() and
+ * is_connected_input_ep(). The function is inlined since the combined size of
+ * the two specialized functions is only marginally larger then the size of the
+ * generic function and at the same time the fast path of the specialized
+ * functions is significantly smaller than the generic function.
  */
-static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
-	struct snd_soc_dapm_widget_list **list)
+static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
+	struct list_head *list, enum snd_soc_dapm_direction dir,
+	int (*fn)(struct snd_soc_dapm_widget *, struct list_head *))
 {
+	enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
 	struct snd_soc_dapm_path *path;
 	int con = 0;
 
-	if (widget->outputs >= 0)
-		return widget->outputs;
+	if (widget->endpoints[dir] >= 0)
+		return widget->endpoints[dir];
 
 	DAPM_UPDATE_STAT(widget, path_checks);
 
-	if (widget->is_sink && widget->connected) {
-		widget->outputs = snd_soc_dapm_suspend_check(widget);
-		return widget->outputs;
+	/* do we need to add this widget to the list ? */
+	if (list)
+		list_add_tail(&widget->work_list, list);
+
+	if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
+		widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
+		return widget->endpoints[dir];
 	}
 
-	list_for_each_entry(path, &widget->sinks, list_source) {
+	snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
 		DAPM_UPDATE_STAT(widget, neighbour_checks);
 
 		if (path->weak || path->is_supply)
@@ -961,91 +1102,40 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
 		if (path->walking)
 			return 1;
 
-		trace_snd_soc_dapm_output_path(widget, path);
+		trace_snd_soc_dapm_path(widget, dir, path);
 
 		if (path->connect) {
 			path->walking = 1;
-
-			/* do we need to add this widget to the list ? */
-			if (list) {
-				int err;
-				err = dapm_list_add_widget(list, path->sink);
-				if (err < 0) {
-					dev_err(widget->dapm->dev,
-						"ASoC: could not add widget %s\n",
-						widget->name);
-					path->walking = 0;
-					return con;
-				}
-			}
-
-			con += is_connected_output_ep(path->sink, list);
-
+			con += fn(path->node[dir], list);
 			path->walking = 0;
 		}
 	}
 
-	widget->outputs = con;
+	widget->endpoints[dir] = con;
 
 	return con;
 }
 
 /*
  * Recursively check for a completed path to an active or physically connected
+ * output widget. Returns number of complete paths.
+ */
+static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
+	struct list_head *list)
+{
+	return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
+			is_connected_output_ep);
+}
+
+/*
+ * Recursively check for a completed path to an active or physically connected
  * input widget. Returns number of complete paths.
  */
 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
-	struct snd_soc_dapm_widget_list **list)
+	struct list_head *list)
 {
-	struct snd_soc_dapm_path *path;
-	int con = 0;
-
-	if (widget->inputs >= 0)
-		return widget->inputs;
-
-	DAPM_UPDATE_STAT(widget, path_checks);
-
-	if (widget->is_source && widget->connected) {
-		widget->inputs = snd_soc_dapm_suspend_check(widget);
-		return widget->inputs;
-	}
-
-	list_for_each_entry(path, &widget->sources, list_sink) {
-		DAPM_UPDATE_STAT(widget, neighbour_checks);
-
-		if (path->weak || path->is_supply)
-			continue;
-
-		if (path->walking)
-			return 1;
-
-		trace_snd_soc_dapm_input_path(widget, path);
-
-		if (path->connect) {
-			path->walking = 1;
-
-			/* do we need to add this widget to the list ? */
-			if (list) {
-				int err;
-				err = dapm_list_add_widget(list, path->source);
-				if (err < 0) {
-					dev_err(widget->dapm->dev,
-						"ASoC: could not add widget %s\n",
-						widget->name);
-					path->walking = 0;
-					return con;
-				}
-			}
-
-			con += is_connected_input_ep(path->source, list);
-
-			path->walking = 0;
-		}
-	}
-
-	widget->inputs = con;
-
-	return con;
+	return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
+			is_connected_input_ep);
 }
 
 /**
@@ -1065,7 +1155,9 @@ int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
 {
 	struct snd_soc_card *card = dai->component->card;
 	struct snd_soc_dapm_widget *w;
+	LIST_HEAD(widgets);
 	int paths;
+	int ret;
 
 	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
 
@@ -1074,14 +1166,21 @@ int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
 	 * to reset the cached number of inputs and outputs.
 	 */
 	list_for_each_entry(w, &card->widgets, list) {
-		w->inputs = -1;
-		w->outputs = -1;
+		w->endpoints[SND_SOC_DAPM_DIR_IN] = -1;
+		w->endpoints[SND_SOC_DAPM_DIR_OUT] = -1;
 	}
 
 	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
-		paths = is_connected_output_ep(dai->playback_widget, list);
+		paths = is_connected_output_ep(dai->playback_widget, &widgets);
 	else
-		paths = is_connected_input_ep(dai->capture_widget, list);
+		paths = is_connected_input_ep(dai->capture_widget, &widgets);
+
+	/* Drop starting point */
+	list_del(widgets.next);
+
+	ret = dapm_widget_list_create(list, &widgets);
+	if (ret)
+		paths = ret;
 
 	trace_snd_soc_dapm_connected(paths, stream);
 	mutex_unlock(&card->dapm_mutex);
@@ -1182,7 +1281,7 @@ static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
 	DAPM_UPDATE_STAT(w, power_checks);
 
 	/* Check if one of our outputs is connected */
-	list_for_each_entry(path, &w->sinks, list_source) {
+	snd_soc_dapm_widget_for_each_sink_path(w, path) {
 		DAPM_UPDATE_STAT(w, neighbour_checks);
 
 		if (path->weak)
@@ -1606,12 +1705,12 @@ static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
 	/* If we changed our power state perhaps our neigbours changed
 	 * also.
 	 */
-	list_for_each_entry(path, &w->sources, list_sink)
+	snd_soc_dapm_widget_for_each_source_path(w, path)
 		dapm_widget_set_peer_power(path->source, power, path->connect);
 
 	/* Supplies can't affect their outputs, only their inputs */
 	if (!w->is_supply) {
-		list_for_each_entry(path, &w->sinks, list_source)
+		snd_soc_dapm_widget_for_each_sink_path(w, path)
 			dapm_widget_set_peer_power(path->sink, power,
 						   path->connect);
 	}
@@ -1812,6 +1911,7 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
 {
 	struct snd_soc_dapm_widget *w = file->private_data;
 	struct snd_soc_card *card = w->dapm->card;
+	enum snd_soc_dapm_direction dir, rdir;
 	char *buf;
 	int in, out;
 	ssize_t ret;
@@ -1848,25 +1948,21 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
 				w->sname,
 				w->active ? "active" : "inactive");
 
-	list_for_each_entry(p, &w->sources, list_sink) {
-		if (p->connected && !p->connected(w, p->source))
-			continue;
+	snd_soc_dapm_for_each_direction(dir) {
+		rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
+		snd_soc_dapm_widget_for_each_path(w, dir, p) {
+			if (p->connected && !p->connected(w, p->node[rdir]))
+				continue;
 
-		if (p->connect)
-			ret += snprintf(buf + ret, PAGE_SIZE - ret,
-					" in  \"%s\" \"%s\"\n",
-					p->name ? p->name : "static",
-					p->source->name);
-	}
-	list_for_each_entry(p, &w->sinks, list_source) {
-		if (p->connected && !p->connected(w, p->sink))
-			continue;
+			if (!p->connect)
+				continue;
 
-		if (p->connect)
 			ret += snprintf(buf + ret, PAGE_SIZE - ret,
-					" out \"%s\" \"%s\"\n",
+					" %s  \"%s\" \"%s\"\n",
+					(rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
 					p->name ? p->name : "static",
-					p->sink->name);
+					p->node[rdir]->name);
+		}
 	}
 
 	mutex_unlock(&card->dapm_mutex);
@@ -2084,14 +2180,16 @@ int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
 
-static ssize_t dapm_widget_show_codec(struct snd_soc_codec *codec, char *buf)
+static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
+	char *buf)
 {
+	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
 	struct snd_soc_dapm_widget *w;
 	int count = 0;
 	char *state = "not set";
 
-	list_for_each_entry(w, &codec->component.card->widgets, list) {
-		if (w->dapm != &codec->dapm)
+	list_for_each_entry(w, &cmpnt->card->widgets, list) {
+		if (w->dapm != dapm)
 			continue;
 
 		/* only display widgets that burnm power */
@@ -2119,7 +2217,7 @@ static ssize_t dapm_widget_show_codec(struct snd_soc_codec *codec, char *buf)
 		}
 	}
 
-	switch (codec->dapm.bias_level) {
+	switch (snd_soc_dapm_get_bias_level(dapm)) {
 	case SND_SOC_BIAS_ON:
 		state = "On";
 		break;
@@ -2148,8 +2246,9 @@ static ssize_t dapm_widget_show(struct device *dev,
 	mutex_lock(&rtd->card->dapm_mutex);
 
 	for (i = 0; i < rtd->num_codecs; i++) {
-		struct snd_soc_codec *codec = rtd->codec_dais[i]->codec;
-		count += dapm_widget_show_codec(codec, buf + count);
+		struct snd_soc_component *cmpnt = rtd->codec_dais[i]->component;
+
+		count += dapm_widget_show_component(cmpnt, buf + count);
 	}
 
 	mutex_unlock(&rtd->card->dapm_mutex);
@@ -2166,38 +2265,51 @@ struct attribute *soc_dapm_dev_attrs[] = {
 
 static void dapm_free_path(struct snd_soc_dapm_path *path)
 {
-	list_del(&path->list_sink);
-	list_del(&path->list_source);
+	list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
+	list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
 	list_del(&path->list_kcontrol);
 	list_del(&path->list);
 	kfree(path);
 }
 
+void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
+{
+	struct snd_soc_dapm_path *p, *next_p;
+	enum snd_soc_dapm_direction dir;
+
+	list_del(&w->list);
+	/*
+	 * remove source and sink paths associated to this widget.
+	 * While removing the path, remove reference to it from both
+	 * source and sink widgets so that path is removed only once.
+	 */
+	snd_soc_dapm_for_each_direction(dir) {
+		snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
+			dapm_free_path(p);
+	}
+
+	kfree(w->kcontrols);
+	kfree_const(w->name);
+	kfree(w);
+}
+
+void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm)
+{
+	dapm->path_sink_cache.widget = NULL;
+	dapm->path_source_cache.widget = NULL;
+}
+
 /* free all dapm widgets and resources */
 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
 {
 	struct snd_soc_dapm_widget *w, *next_w;
-	struct snd_soc_dapm_path *p, *next_p;
 
 	list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
 		if (w->dapm != dapm)
 			continue;
-		list_del(&w->list);
-		/*
-		 * remove source and sink paths associated to this widget.
-		 * While removing the path, remove reference to it from both
-		 * source and sink widgets so that path is removed only once.
-		 */
-		list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
-			dapm_free_path(p);
-
-		list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
-			dapm_free_path(p);
-
-		kfree(w->kcontrols);
-		kfree(w->name);
-		kfree(w);
+		snd_soc_dapm_free_widget(w);
 	}
+	snd_soc_dapm_reset_cache(dapm);
 }
 
 static struct snd_soc_dapm_widget *dapm_find_widget(
@@ -2302,20 +2414,22 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
  */
 static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
 {
+	enum snd_soc_dapm_direction dir;
 	struct snd_soc_dapm_path *p;
+	unsigned int ep;
 
 	switch (w->id) {
 	case snd_soc_dapm_input:
 		/* On a fully routed card a input is never a source */
 		if (w->dapm->card->fully_routed)
-			break;
-		w->is_source = 1;
-		list_for_each_entry(p, &w->sources, list_sink) {
+			return;
+		ep = SND_SOC_DAPM_EP_SOURCE;
+		snd_soc_dapm_widget_for_each_source_path(w, p) {
 			if (p->source->id == snd_soc_dapm_micbias ||
 				p->source->id == snd_soc_dapm_mic ||
 				p->source->id == snd_soc_dapm_line ||
 				p->source->id == snd_soc_dapm_output) {
-					w->is_source = 0;
+					ep = 0;
 					break;
 			}
 		}
@@ -2323,25 +2437,74 @@ static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
 	case snd_soc_dapm_output:
 		/* On a fully routed card a output is never a sink */
 		if (w->dapm->card->fully_routed)
-			break;
-		w->is_sink = 1;
-		list_for_each_entry(p, &w->sinks, list_source) {
+			return;
+		ep = SND_SOC_DAPM_EP_SINK;
+		snd_soc_dapm_widget_for_each_sink_path(w, p) {
 			if (p->sink->id == snd_soc_dapm_spk ||
 				p->sink->id == snd_soc_dapm_hp ||
 				p->sink->id == snd_soc_dapm_line ||
 				p->sink->id == snd_soc_dapm_input) {
-					w->is_sink = 0;
+					ep = 0;
 					break;
 			}
 		}
 		break;
 	case snd_soc_dapm_line:
-		w->is_sink = !list_empty(&w->sources);
-		w->is_source = !list_empty(&w->sinks);
+		ep = 0;
+		snd_soc_dapm_for_each_direction(dir) {
+			if (!list_empty(&w->edges[dir]))
+				ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
+		}
+		break;
+	default:
+		return;
+	}
+
+	w->is_ep = ep;
+}
+
+static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
+	struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
+	const char *control)
+{
+	bool dynamic_source = false;
+	bool dynamic_sink = false;
+
+	if (!control)
+		return 0;
+
+	switch (source->id) {
+	case snd_soc_dapm_demux:
+		dynamic_source = true;
+		break;
+	default:
+		break;
+	}
+
+	switch (sink->id) {
+	case snd_soc_dapm_mux:
+	case snd_soc_dapm_switch:
+	case snd_soc_dapm_mixer:
+	case snd_soc_dapm_mixer_named_ctl:
+		dynamic_sink = true;
 		break;
 	default:
 		break;
 	}
+
+	if (dynamic_source && dynamic_sink) {
+		dev_err(dapm->dev,
+			"Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
+			source->name, control, sink->name);
+		return -EINVAL;
+	} else if (!dynamic_source && !dynamic_sink) {
+		dev_err(dapm->dev,
+			"Control not supported for path %s -> [%s] -> %s\n",
+			source->name, control, sink->name);
+		return -EINVAL;
+	}
+
+	return 0;
 }
 
 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
@@ -2350,6 +2513,8 @@ static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
 	int (*connected)(struct snd_soc_dapm_widget *source,
 			 struct snd_soc_dapm_widget *sink))
 {
+	struct snd_soc_dapm_widget *widgets[2];
+	enum snd_soc_dapm_direction dir;
 	struct snd_soc_dapm_path *path;
 	int ret;
 
@@ -2374,17 +2539,22 @@ static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
 		return -EINVAL;
 	}
 
+	ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
+	if (ret)
+		return ret;
+
 	path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
 	if (!path)
 		return -ENOMEM;
 
-	path->source = wsource;
-	path->sink = wsink;
+	path->node[SND_SOC_DAPM_DIR_IN] = wsource;
+	path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
+	widgets[SND_SOC_DAPM_DIR_IN] = wsource;
+	widgets[SND_SOC_DAPM_DIR_OUT] = wsink;
+
 	path->connected = connected;
 	INIT_LIST_HEAD(&path->list);
 	INIT_LIST_HEAD(&path->list_kcontrol);
-	INIT_LIST_HEAD(&path->list_source);
-	INIT_LIST_HEAD(&path->list_sink);
 
 	if (wsource->is_supply || wsink->is_supply)
 		path->is_supply = 1;
@@ -2393,10 +2563,19 @@ static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
 	if (control == NULL) {
 		path->connect = 1;
 	} else {
-		/* connect dynamic paths */
+		switch (wsource->id) {
+		case snd_soc_dapm_demux:
+			ret = dapm_connect_mux(dapm, path, control, wsource);
+			if (ret)
+				goto err;
+			break;
+		default:
+			break;
+		}
+
 		switch (wsink->id) {
 		case snd_soc_dapm_mux:
-			ret = dapm_connect_mux(dapm, path, control);
+			ret = dapm_connect_mux(dapm, path, control, wsink);
 			if (ret != 0)
 				goto err;
 			break;
@@ -2408,23 +2587,18 @@ static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
 				goto err;
 			break;
 		default:
-			dev_err(dapm->dev,
-				"Control not supported for path %s -> [%s] -> %s\n",
-				wsource->name, control, wsink->name);
-			ret = -EINVAL;
-			goto err;
+			break;
 		}
 	}
 
 	list_add(&path->list, &dapm->card->paths);
-	list_add(&path->list_sink, &wsink->sources);
-	list_add(&path->list_source, &wsource->sinks);
-
-	dapm_update_widget_flags(wsource);
-	dapm_update_widget_flags(wsink);
+	snd_soc_dapm_for_each_direction(dir)
+		list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);
 
-	dapm_mark_dirty(wsource, "Route added");
-	dapm_mark_dirty(wsink, "Route added");
+	snd_soc_dapm_for_each_direction(dir) {
+		dapm_update_widget_flags(widgets[dir]);
+		dapm_mark_dirty(widgets[dir], "Route added");
+	}
 
 	if (dapm->card->instantiated && path->connect)
 		dapm_path_invalidate(path);
@@ -2460,6 +2634,12 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
 		source = route->source;
 	}
 
+	wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
+	wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
+
+	if (wsink && wsource)
+		goto skip_search;
+
 	/*
 	 * find src and dest widgets over all widgets but favor a widget from
 	 * current DAPM context
@@ -2467,14 +2647,20 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
 	list_for_each_entry(w, &dapm->card->widgets, list) {
 		if (!wsink && !(strcmp(w->name, sink))) {
 			wtsink = w;
-			if (w->dapm == dapm)
+			if (w->dapm == dapm) {
 				wsink = w;
+				if (wsource)
+					break;
+			}
 			continue;
 		}
 		if (!wsource && !(strcmp(w->name, source))) {
 			wtsource = w;
-			if (w->dapm == dapm)
+			if (w->dapm == dapm) {
 				wsource = w;
+				if (wsink)
+					break;
+			}
 		}
 	}
 	/* use widget from another DAPM context if not found from this */
@@ -2494,6 +2680,10 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
 		return -ENODEV;
 	}
 
+skip_search:
+	dapm_wcache_update(&dapm->path_sink_cache, wsink);
+	dapm_wcache_update(&dapm->path_source_cache, wsource);
+
 	ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
 		route->connected);
 	if (ret)
@@ -2656,7 +2846,7 @@ static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
 		dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
 			 route->source, route->sink);
 
-	list_for_each_entry(path, &source->sinks, list_source) {
+	snd_soc_dapm_widget_for_each_sink_path(source, path) {
 		if (path->sink == sink) {
 			path->weak = 1;
 			count++;
@@ -2710,7 +2900,7 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
 
 /**
  * snd_soc_dapm_new_widgets - add new dapm widgets
- * @dapm: DAPM context
+ * @card: card to be checked for new dapm widgets
  *
  * Checks the codec for any new dapm widgets and creates them if found.
  *
@@ -2745,6 +2935,7 @@ int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
 			dapm_new_mixer(w);
 			break;
 		case snd_soc_dapm_mux:
+		case snd_soc_dapm_demux:
 			dapm_new_mux(w);
 			break;
 		case snd_soc_dapm_pga:
@@ -2911,16 +3102,21 @@ int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
+	struct snd_soc_card *card = dapm->card;
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	unsigned int reg_val, val;
 
-	if (e->reg != SND_SOC_NOPM) {
+	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+	if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
 		int ret = soc_dapm_read(dapm, e->reg, &reg_val);
-		if (ret)
+		if (ret) {
+			mutex_unlock(&card->dapm_mutex);
 			return ret;
+		}
 	} else {
 		reg_val = dapm_kcontrol_get_value(kcontrol);
 	}
+	mutex_unlock(&card->dapm_mutex);
 
 	val = (reg_val >> e->shift_l) & e->mask;
 	ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
@@ -2950,7 +3146,7 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
 	struct snd_soc_card *card = dapm->card;
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	unsigned int *item = ucontrol->value.enumerated.item;
-	unsigned int val, change;
+	unsigned int val, change, reg_change = 0;
 	unsigned int mask;
 	struct snd_soc_dapm_update update;
 	int ret = 0;
@@ -2969,19 +3165,20 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
 
 	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
 
+	change = dapm_kcontrol_set_value(kcontrol, val);
+
 	if (e->reg != SND_SOC_NOPM)
-		change = soc_dapm_test_bits(dapm, e->reg, mask, val);
-	else
-		change = dapm_kcontrol_set_value(kcontrol, val);
+		reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
 
-	if (change) {
-		if (e->reg != SND_SOC_NOPM) {
+	if (change || reg_change) {
+		if (reg_change) {
 			update.kcontrol = kcontrol;
 			update.reg = e->reg;
 			update.mask = mask;
 			update.val = val;
 			card->update = &update;
 		}
+		change |= reg_change;
 
 		ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
 
@@ -3062,10 +3259,28 @@ int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
 
-static struct snd_soc_dapm_widget *
+struct snd_soc_dapm_widget *
 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
+	const struct snd_soc_dapm_widget *widget)
+{
+	struct snd_soc_dapm_widget *w;
+
+	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+	w = snd_soc_dapm_new_control_unlocked(dapm, widget);
+	if (!w)
+		dev_err(dapm->dev,
+			"ASoC: Failed to create DAPM control %s\n",
+			widget->name);
+
+	mutex_unlock(&dapm->card->dapm_mutex);
+	return w;
+}
+
+struct snd_soc_dapm_widget *
+snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 			 const struct snd_soc_dapm_widget *widget)
 {
+	enum snd_soc_dapm_direction dir;
 	struct snd_soc_dapm_widget *w;
 	const char *prefix;
 	int ret;
@@ -3112,7 +3327,7 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 	if (prefix)
 		w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
 	else
-		w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
+		w->name = kstrdup_const(widget->name, GFP_KERNEL);
 	if (w->name == NULL) {
 		kfree(w);
 		return NULL;
@@ -3120,30 +3335,31 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 
 	switch (w->id) {
 	case snd_soc_dapm_mic:
-		w->is_source = 1;
+		w->is_ep = SND_SOC_DAPM_EP_SOURCE;
 		w->power_check = dapm_generic_check_power;
 		break;
 	case snd_soc_dapm_input:
 		if (!dapm->card->fully_routed)
-			w->is_source = 1;
+			w->is_ep = SND_SOC_DAPM_EP_SOURCE;
 		w->power_check = dapm_generic_check_power;
 		break;
 	case snd_soc_dapm_spk:
 	case snd_soc_dapm_hp:
-		w->is_sink = 1;
+		w->is_ep = SND_SOC_DAPM_EP_SINK;
 		w->power_check = dapm_generic_check_power;
 		break;
 	case snd_soc_dapm_output:
 		if (!dapm->card->fully_routed)
-			w->is_sink = 1;
+			w->is_ep = SND_SOC_DAPM_EP_SINK;
 		w->power_check = dapm_generic_check_power;
 		break;
 	case snd_soc_dapm_vmid:
 	case snd_soc_dapm_siggen:
-		w->is_source = 1;
+		w->is_ep = SND_SOC_DAPM_EP_SOURCE;
 		w->power_check = dapm_always_on_check_power;
 		break;
 	case snd_soc_dapm_mux:
+	case snd_soc_dapm_demux:
 	case snd_soc_dapm_switch:
 	case snd_soc_dapm_mixer:
 	case snd_soc_dapm_mixer_named_ctl:
@@ -3173,14 +3389,14 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 	}
 
 	w->dapm = dapm;
-	INIT_LIST_HEAD(&w->sources);
-	INIT_LIST_HEAD(&w->sinks);
 	INIT_LIST_HEAD(&w->list);
 	INIT_LIST_HEAD(&w->dirty);
-	list_add(&w->list, &dapm->card->widgets);
+	list_add_tail(&w->list, &dapm->card->widgets);
 
-	w->inputs = -1;
-	w->outputs = -1;
+	snd_soc_dapm_for_each_direction(dir) {
+		INIT_LIST_HEAD(&w->edges[dir]);
+		w->endpoints[dir] = -1;
+	}
 
 	/* machine layer set ups unconnected pins and insertions */
 	w->connected = 1;
@@ -3207,7 +3423,7 @@ int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
 
 	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
 	for (i = 0; i < num; i++) {
-		w = snd_soc_dapm_new_control(dapm, widget);
+		w = snd_soc_dapm_new_control_unlocked(dapm, widget);
 		if (!w) {
 			dev_err(dapm->dev,
 				"ASoC: Failed to create DAPM control %s\n",
@@ -3234,19 +3450,17 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 	int ret;
 
 	if (WARN_ON(!config) ||
-	    WARN_ON(list_empty(&w->sources) || list_empty(&w->sinks)))
+	    WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
+		    list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
 		return -EINVAL;
 
 	/* We only support a single source and sink, pick the first */
-	source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
-				    list_sink);
-	sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
-				  list_source);
-
-	if (WARN_ON(!source_p || !sink_p) ||
-	    WARN_ON(!sink_p->source || !source_p->sink) ||
-	    WARN_ON(!source_p->source || !sink_p->sink))
-		return -EINVAL;
+	source_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_OUT],
+				    struct snd_soc_dapm_path,
+				    list_node[SND_SOC_DAPM_DIR_OUT]);
+	sink_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_IN],
+				    struct snd_soc_dapm_path,
+				    list_node[SND_SOC_DAPM_DIR_IN]);
 
 	source = source_p->source->priv;
 	sink = sink_p->sink->priv;
@@ -3283,11 +3497,29 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 	switch (event) {
 	case SND_SOC_DAPM_PRE_PMU:
 		substream.stream = SNDRV_PCM_STREAM_CAPTURE;
+		if (source->driver->ops && source->driver->ops->startup) {
+			ret = source->driver->ops->startup(&substream, source);
+			if (ret < 0) {
+				dev_err(source->dev,
+					"ASoC: startup() failed: %d\n", ret);
+				goto out;
+			}
+			source->active++;
+		}
 		ret = soc_dai_hw_params(&substream, params, source);
 		if (ret < 0)
 			goto out;
 
 		substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
+		if (sink->driver->ops && sink->driver->ops->startup) {
+			ret = sink->driver->ops->startup(&substream, sink);
+			if (ret < 0) {
+				dev_err(sink->dev,
+					"ASoC: startup() failed: %d\n", ret);
+				goto out;
+			}
+			sink->active++;
+		}
 		ret = soc_dai_hw_params(&substream, params, sink);
 		if (ret < 0)
 			goto out;
@@ -3307,11 +3539,23 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 		if (ret != 0 && ret != -ENOTSUPP)
 			dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
 		ret = 0;
+
+		source->active--;
+		if (source->driver->ops && source->driver->ops->shutdown) {
+			substream.stream = SNDRV_PCM_STREAM_CAPTURE;
+			source->driver->ops->shutdown(&substream, source);
+		}
+
+		sink->active--;
+		if (sink->driver->ops && sink->driver->ops->shutdown) {
+			substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
+			sink->driver->ops->shutdown(&substream, sink);
+		}
 		break;
 
 	default:
 		WARN(1, "Unknown event %d\n", event);
-		return -EINVAL;
+		ret = -EINVAL;
 	}
 
 out:
@@ -3324,7 +3568,7 @@ static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
 
-	ucontrol->value.integer.value[0] = w->params_select;
+	ucontrol->value.enumerated.item[0] = w->params_select;
 
 	return 0;
 }
@@ -3338,13 +3582,13 @@ static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
 	if (w->power)
 		return -EBUSY;
 
-	if (ucontrol->value.integer.value[0] == w->params_select)
+	if (ucontrol->value.enumerated.item[0] == w->params_select)
 		return 0;
 
-	if (ucontrol->value.integer.value[0] >= w->num_params)
+	if (ucontrol->value.enumerated.item[0] >= w->num_params)
 		return -EINVAL;
 
-	w->params_select = ucontrol->value.integer.value[0];
+	w->params_select = ucontrol->value.enumerated.item[0];
 
 	return 0;
 }
@@ -3445,7 +3689,7 @@ int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
 
 	dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
 
-	w = snd_soc_dapm_new_control(&card->dapm, &template);
+	w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
 	if (!w) {
 		dev_err(card->dev, "ASoC: Failed to create %s widget\n",
 			link_name);
@@ -3496,7 +3740,7 @@ int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
 		dev_dbg(dai->dev, "ASoC: adding %s widget\n",
 			template.name);
 
-		w = snd_soc_dapm_new_control(dapm, &template);
+		w = snd_soc_dapm_new_control_unlocked(dapm, &template);
 		if (!w) {
 			dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
 				dai->driver->playback.stream_name);
@@ -3515,7 +3759,7 @@ int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
 		dev_dbg(dai->dev, "ASoC: adding %s widget\n",
 			template.name);
 
-		w = snd_soc_dapm_new_control(dapm, &template);
+		w = snd_soc_dapm_new_control_unlocked(dapm, &template);
 		if (!w) {
 			dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
 				dai->driver->capture.stream_name);
@@ -3588,11 +3832,6 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
 	for (i = 0; i < rtd->num_codecs; i++) {
 		struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
 
-		/* there is no point in connecting BE DAI links with dummies */
-		if (snd_soc_dai_is_dummy(codec_dai) ||
-			snd_soc_dai_is_dummy(cpu_dai))
-			continue;
-
 		/* connect BE DAI playback if widgets are valid */
 		if (codec_dai->playback_widget && cpu_dai->playback_widget) {
 			source = cpu_dai->playback_widget;
@@ -3623,6 +3862,7 @@ static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
 	int event)
 {
 	struct snd_soc_dapm_widget *w;
+	unsigned int ep;
 
 	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
 		w = dai->playback_widget;
@@ -3632,12 +3872,22 @@ static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
 	if (w) {
 		dapm_mark_dirty(w, "stream event");
 
+		if (w->id == snd_soc_dapm_dai_in) {
+			ep = SND_SOC_DAPM_EP_SOURCE;
+			dapm_widget_invalidate_input_paths(w);
+		} else {
+			ep = SND_SOC_DAPM_EP_SINK;
+			dapm_widget_invalidate_output_paths(w);
+		}
+
 		switch (event) {
 		case SND_SOC_DAPM_STREAM_START:
 			w->active = 1;
+			w->is_ep = ep;
 			break;
 		case SND_SOC_DAPM_STREAM_STOP:
 			w->active = 0;
+			w->is_ep = 0;
 			break;
 		case SND_SOC_DAPM_STREAM_SUSPEND:
 		case SND_SOC_DAPM_STREAM_RESUME:
@@ -3645,14 +3895,6 @@ static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
 		case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
 			break;
 		}
-
-		if (w->id == snd_soc_dapm_dai_in) {
-			w->is_source = w->active;
-			dapm_widget_invalidate_input_paths(w);
-		} else {
-			w->is_sink = w->active;
-			dapm_widget_invalidate_output_paths(w);
-		}
 	}
 }