From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800

---
 kernel/sound/soc/soc-dapm.c | 1152 ++++++++++++++++++++++++++++++++++-----------------------
 1 files changed, 690 insertions(+), 462 deletions(-)

diff --git a/kernel/sound/soc/soc-dapm.c b/kernel/sound/soc/soc-dapm.c
index 20de6cf..754c1f1 100644
--- a/kernel/sound/soc/soc-dapm.c
+++ b/kernel/sound/soc/soc-dapm.c
@@ -18,7 +18,6 @@
 //      device reopen.
 
 #include <linux/module.h>
-#include <linux/moduleparam.h>
 #include <linux/init.h>
 #include <linux/async.h>
 #include <linux/delay.h>
@@ -63,87 +62,89 @@
 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 			 const struct snd_soc_dapm_widget *widget);
 
+static unsigned int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg);
+
 /* dapm power sequences - make this per codec in the future */
 static int dapm_up_seq[] = {
-	[snd_soc_dapm_pre] = 0,
-	[snd_soc_dapm_regulator_supply] = 1,
-	[snd_soc_dapm_pinctrl] = 1,
-	[snd_soc_dapm_clock_supply] = 1,
-	[snd_soc_dapm_supply] = 2,
-	[snd_soc_dapm_micbias] = 3,
-	[snd_soc_dapm_vmid] = 3,
-	[snd_soc_dapm_dai_link] = 2,
-	[snd_soc_dapm_dai_in] = 4,
-	[snd_soc_dapm_dai_out] = 4,
-	[snd_soc_dapm_aif_in] = 4,
-	[snd_soc_dapm_aif_out] = 4,
-	[snd_soc_dapm_mic] = 5,
-	[snd_soc_dapm_siggen] = 5,
-	[snd_soc_dapm_input] = 5,
-	[snd_soc_dapm_output] = 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,
-	[snd_soc_dapm_mixer_named_ctl] = 8,
-	[snd_soc_dapm_pga] = 9,
-	[snd_soc_dapm_buffer] = 9,
-	[snd_soc_dapm_scheduler] = 9,
-	[snd_soc_dapm_effect] = 9,
-	[snd_soc_dapm_src] = 9,
-	[snd_soc_dapm_asrc] = 9,
-	[snd_soc_dapm_encoder] = 9,
-	[snd_soc_dapm_decoder] = 9,
-	[snd_soc_dapm_adc] = 10,
-	[snd_soc_dapm_out_drv] = 11,
-	[snd_soc_dapm_hp] = 11,
-	[snd_soc_dapm_spk] = 11,
-	[snd_soc_dapm_line] = 11,
-	[snd_soc_dapm_sink] = 11,
-	[snd_soc_dapm_kcontrol] = 12,
-	[snd_soc_dapm_post] = 13,
+	[snd_soc_dapm_pre] = 1,
+	[snd_soc_dapm_regulator_supply] = 2,
+	[snd_soc_dapm_pinctrl] = 2,
+	[snd_soc_dapm_clock_supply] = 2,
+	[snd_soc_dapm_supply] = 3,
+	[snd_soc_dapm_micbias] = 4,
+	[snd_soc_dapm_vmid] = 4,
+	[snd_soc_dapm_dai_link] = 3,
+	[snd_soc_dapm_dai_in] = 5,
+	[snd_soc_dapm_dai_out] = 5,
+	[snd_soc_dapm_aif_in] = 5,
+	[snd_soc_dapm_aif_out] = 5,
+	[snd_soc_dapm_mic] = 6,
+	[snd_soc_dapm_siggen] = 6,
+	[snd_soc_dapm_input] = 6,
+	[snd_soc_dapm_output] = 6,
+	[snd_soc_dapm_mux] = 7,
+	[snd_soc_dapm_demux] = 7,
+	[snd_soc_dapm_dac] = 8,
+	[snd_soc_dapm_switch] = 9,
+	[snd_soc_dapm_mixer] = 9,
+	[snd_soc_dapm_mixer_named_ctl] = 9,
+	[snd_soc_dapm_pga] = 10,
+	[snd_soc_dapm_buffer] = 10,
+	[snd_soc_dapm_scheduler] = 10,
+	[snd_soc_dapm_effect] = 10,
+	[snd_soc_dapm_src] = 10,
+	[snd_soc_dapm_asrc] = 10,
+	[snd_soc_dapm_encoder] = 10,
+	[snd_soc_dapm_decoder] = 10,
+	[snd_soc_dapm_adc] = 11,
+	[snd_soc_dapm_out_drv] = 12,
+	[snd_soc_dapm_hp] = 12,
+	[snd_soc_dapm_spk] = 12,
+	[snd_soc_dapm_line] = 12,
+	[snd_soc_dapm_sink] = 12,
+	[snd_soc_dapm_kcontrol] = 13,
+	[snd_soc_dapm_post] = 14,
 };
 
 static int dapm_down_seq[] = {
-	[snd_soc_dapm_pre] = 0,
-	[snd_soc_dapm_kcontrol] = 1,
-	[snd_soc_dapm_adc] = 2,
-	[snd_soc_dapm_hp] = 3,
-	[snd_soc_dapm_spk] = 3,
-	[snd_soc_dapm_line] = 3,
-	[snd_soc_dapm_out_drv] = 3,
-	[snd_soc_dapm_sink] = 3,
-	[snd_soc_dapm_pga] = 4,
-	[snd_soc_dapm_buffer] = 4,
-	[snd_soc_dapm_scheduler] = 4,
-	[snd_soc_dapm_effect] = 4,
-	[snd_soc_dapm_src] = 4,
-	[snd_soc_dapm_asrc] = 4,
-	[snd_soc_dapm_encoder] = 4,
-	[snd_soc_dapm_decoder] = 4,
-	[snd_soc_dapm_switch] = 5,
-	[snd_soc_dapm_mixer_named_ctl] = 5,
-	[snd_soc_dapm_mixer] = 5,
-	[snd_soc_dapm_dac] = 6,
-	[snd_soc_dapm_mic] = 7,
-	[snd_soc_dapm_siggen] = 7,
-	[snd_soc_dapm_input] = 7,
-	[snd_soc_dapm_output] = 7,
-	[snd_soc_dapm_micbias] = 8,
-	[snd_soc_dapm_vmid] = 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,
-	[snd_soc_dapm_dai_out] = 10,
-	[snd_soc_dapm_dai_link] = 11,
-	[snd_soc_dapm_supply] = 12,
-	[snd_soc_dapm_clock_supply] = 13,
-	[snd_soc_dapm_pinctrl] = 13,
-	[snd_soc_dapm_regulator_supply] = 13,
-	[snd_soc_dapm_post] = 14,
+	[snd_soc_dapm_pre] = 1,
+	[snd_soc_dapm_kcontrol] = 2,
+	[snd_soc_dapm_adc] = 3,
+	[snd_soc_dapm_hp] = 4,
+	[snd_soc_dapm_spk] = 4,
+	[snd_soc_dapm_line] = 4,
+	[snd_soc_dapm_out_drv] = 4,
+	[snd_soc_dapm_sink] = 4,
+	[snd_soc_dapm_pga] = 5,
+	[snd_soc_dapm_buffer] = 5,
+	[snd_soc_dapm_scheduler] = 5,
+	[snd_soc_dapm_effect] = 5,
+	[snd_soc_dapm_src] = 5,
+	[snd_soc_dapm_asrc] = 5,
+	[snd_soc_dapm_encoder] = 5,
+	[snd_soc_dapm_decoder] = 5,
+	[snd_soc_dapm_switch] = 6,
+	[snd_soc_dapm_mixer_named_ctl] = 6,
+	[snd_soc_dapm_mixer] = 6,
+	[snd_soc_dapm_dac] = 7,
+	[snd_soc_dapm_mic] = 8,
+	[snd_soc_dapm_siggen] = 8,
+	[snd_soc_dapm_input] = 8,
+	[snd_soc_dapm_output] = 8,
+	[snd_soc_dapm_micbias] = 9,
+	[snd_soc_dapm_vmid] = 9,
+	[snd_soc_dapm_mux] = 10,
+	[snd_soc_dapm_demux] = 10,
+	[snd_soc_dapm_aif_in] = 11,
+	[snd_soc_dapm_aif_out] = 11,
+	[snd_soc_dapm_dai_in] = 11,
+	[snd_soc_dapm_dai_out] = 11,
+	[snd_soc_dapm_dai_link] = 12,
+	[snd_soc_dapm_supply] = 13,
+	[snd_soc_dapm_clock_supply] = 14,
+	[snd_soc_dapm_pinctrl] = 14,
+	[snd_soc_dapm_regulator_supply] = 14,
+	[snd_soc_dapm_post] = 15,
 };
 
 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
@@ -158,6 +159,7 @@
 		schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
 }
 
+__printf(3, 4)
 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
 {
 	va_list args;
@@ -302,7 +304,7 @@
 
 	mutex_lock(&card->dapm_mutex);
 
-	list_for_each_entry(w, &card->widgets, list) {
+	for_each_card_widgets(card, w) {
 		if (w->is_ep) {
 			dapm_mark_dirty(w, "Rechecking endpoints");
 			if (w->is_ep & SND_SOC_DAPM_EP_SINK)
@@ -320,7 +322,24 @@
 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
 	const struct snd_soc_dapm_widget *_widget)
 {
-	return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
+	struct snd_soc_dapm_widget *w;
+
+	w = kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
+	if (!w)
+		return NULL;
+
+	/*
+	 * w->name is duplicated in caller, but w->sname isn't.
+	 * Duplicate it here if defined
+	 */
+	if (_widget->sname) {
+		w->sname = kstrdup_const(_widget->sname, GFP_KERNEL);
+		if (!w->sname) {
+			kfree(w);
+			return NULL;
+		}
+	}
+	return w;
 }
 
 struct dapm_kcontrol_data {
@@ -388,10 +407,6 @@
 				ret = PTR_ERR(data->widget);
 				goto err_data;
 			}
-			if (!data->widget) {
-				ret = -ENOMEM;
-				goto err_data;
-			}
 		}
 		break;
 	case snd_soc_dapm_demux:
@@ -426,13 +441,12 @@
 				ret = PTR_ERR(data->widget);
 				goto err_data;
 			}
-			if (!data->widget) {
-				ret = -ENOMEM;
-				goto err_data;
-			}
 
 			snd_soc_dapm_add_path(widget->dapm, data->widget,
 					      widget, NULL, NULL);
+		} else if (e->reg != SND_SOC_NOPM) {
+			data->value = soc_dapm_read(widget->dapm, e->reg) &
+				      (e->mask << e->shift_l);
 		}
 		break;
 	default:
@@ -478,7 +492,8 @@
 		n = 1;
 
 	new_wlist = krealloc(data->wlist,
-			sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
+			     struct_size(new_wlist, widgets, n),
+			     GFP_KERNEL);
 	if (!new_wlist)
 		return -ENOMEM;
 
@@ -593,7 +608,7 @@
 
 	memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
 
-	list_for_each_entry(w, &card->widgets, list) {
+	for_each_card_widgets(card, w) {
 		w->new_power = w->power;
 		w->power_checked = false;
 	}
@@ -606,12 +621,11 @@
 	return dapm->component->name_prefix;
 }
 
-static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
-	unsigned int *value)
+static unsigned int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg)
 {
 	if (!dapm->component)
 		return -EIO;
-	return snd_soc_component_read(dapm->component, reg, value);
+	return  snd_soc_component_read(dapm->component, reg);
 }
 
 static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
@@ -688,8 +702,8 @@
 {
 	int ret = 0;
 
-	if (dapm->set_bias_level)
-		ret = dapm->set_bias_level(dapm, level);
+	if (dapm->component)
+		ret = snd_soc_component_set_bias_level(dapm->component, level);
 
 	if (ret == 0)
 		dapm->bias_level = level;
@@ -715,8 +729,7 @@
 
 	trace_snd_soc_bias_level_start(card, level);
 
-	if (card && card->set_bias_level)
-		ret = card->set_bias_level(card, dapm, level);
+	ret = snd_soc_card_set_bias_level(card, dapm, level);
 	if (ret != 0)
 		goto out;
 
@@ -726,8 +739,7 @@
 	if (ret != 0)
 		goto out;
 
-	if (card && card->set_bias_level_post)
-		ret = card->set_bias_level_post(card, dapm, level);
+	ret = snd_soc_card_set_bias_level_post(card, dapm, level);
 out:
 	trace_snd_soc_bias_level_done(card, level);
 
@@ -745,7 +757,7 @@
 	int i;
 
 	if (e->reg != SND_SOC_NOPM) {
-		soc_dapm_read(dapm, e->reg, &val);
+		val = soc_dapm_read(dapm, e->reg);
 		val = (val >> e->shift_l) & e->mask;
 		item = snd_soc_enum_val_to_item(e, val);
 	} else {
@@ -782,7 +794,7 @@
 	unsigned int val;
 
 	if (reg != SND_SOC_NOPM) {
-		soc_dapm_read(p->sink->dapm, reg, &val);
+		val = soc_dapm_read(p->sink->dapm, reg);
 		/*
 		 * The nth_path argument allows this function to know
 		 * which path of a kcontrol it is setting the initial
@@ -797,7 +809,7 @@
 		 */
 		if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
 			if (reg != mc->rreg)
-				soc_dapm_read(p->sink->dapm, mc->rreg, &val);
+				val = soc_dapm_read(p->sink->dapm, mc->rreg);
 			val = (val >> mc->rshift) & mask;
 		} else {
 			val = (val >> shift) & mask;
@@ -843,7 +855,7 @@
 
 	*kcontrol = NULL;
 
-	list_for_each_entry(w, &dapm->card->widgets, list) {
+	for_each_card_widgets(dapm->card, w) {
 		if (w == kcontrolw || w->dapm != kcontrolw->dapm)
 			continue;
 		for (i = 0; i < w->num_kcontrols; i++) {
@@ -894,6 +906,7 @@
 			case snd_soc_dapm_switch:
 			case snd_soc_dapm_mixer:
 			case snd_soc_dapm_pga:
+			case snd_soc_dapm_effect:
 			case snd_soc_dapm_out_drv:
 				wname_in_long_name = true;
 				kcname_in_long_name = true;
@@ -1070,9 +1083,10 @@
 	struct snd_kcontrol *kcontrol;
 	struct snd_soc_dapm_context *dapm = w->dapm;
 	struct snd_card *card = dapm->card->snd_card;
+	struct snd_soc_pcm_runtime *rtd = w->priv;
 
 	/* create control for links with > 1 config */
-	if (w->num_params <= 1)
+	if (rtd->dai_link->num_params <= 1)
 		return 0;
 
 	/* add kcontrol */
@@ -1113,6 +1127,11 @@
 	}
 }
 
+static void dapm_widget_list_free(struct snd_soc_dapm_widget_list **list)
+{
+	kfree(*list);
+}
+
 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
 	struct list_head *widgets)
 {
@@ -1134,6 +1153,34 @@
 	(*list)->num_widgets = i;
 
 	return 0;
+}
+
+/*
+ * Recursively reset the cached number of inputs or outputs for the specified
+ * widget and all widgets that can be reached via incoming or outcoming paths
+ * from the widget.
+ */
+static void invalidate_paths_ep(struct snd_soc_dapm_widget *widget,
+	enum snd_soc_dapm_direction dir)
+{
+	enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
+	struct snd_soc_dapm_path *path;
+
+	widget->endpoints[dir] = -1;
+
+	snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
+		if (path->weak || path->is_supply)
+			continue;
+
+		if (path->walking)
+			return;
+
+		if (path->connect) {
+			path->walking = 1;
+			invalidate_paths_ep(path->node[dir], dir);
+			path->walking = 0;
+		}
+	}
 }
 
 /*
@@ -1234,7 +1281,7 @@
 }
 
 /**
- * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
+ * snd_soc_dapm_dai_get_connected_widgets - query audio path and it's widgets.
  * @dai: the soc DAI.
  * @stream: stream direction.
  * @list: list of active widgets for this stream.
@@ -1265,21 +1312,17 @@
 
 	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
 
-	/*
-	 * For is_connected_{output,input}_ep fully discover the graph we need
-	 * to reset the cached number of inputs and outputs.
-	 */
-	list_for_each_entry(w, &card->widgets, list) {
-		w->endpoints[SND_SOC_DAPM_DIR_IN] = -1;
-		w->endpoints[SND_SOC_DAPM_DIR_OUT] = -1;
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		w = dai->playback_widget;
+		invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT);
+		paths = is_connected_output_ep(w, &widgets,
+				custom_stop_condition);
+	} else {
+		w = dai->capture_widget;
+		invalidate_paths_ep(w, SND_SOC_DAPM_DIR_IN);
+		paths = is_connected_input_ep(w, &widgets,
+				custom_stop_condition);
 	}
-
-	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
-		paths = is_connected_output_ep(dai->playback_widget, &widgets,
-				custom_stop_condition);
-	else
-		paths = is_connected_input_ep(dai->capture_widget, &widgets,
-				custom_stop_condition);
 
 	/* Drop starting point */
 	list_del(widgets.next);
@@ -1292,6 +1335,11 @@
 	mutex_unlock(&card->dapm_mutex);
 
 	return paths;
+}
+
+void snd_soc_dapm_dai_free_widgets(struct snd_soc_dapm_widget_list **list)
+{
+	dapm_widget_list_free(list);
 }
 
 /*
@@ -1364,14 +1412,13 @@
 
 	soc_dapm_async_complete(w->dapm);
 
-#ifdef CONFIG_HAVE_CLK
 	if (SND_SOC_DAPM_EVENT_ON(event)) {
 		return clk_prepare_enable(w->clk);
 	} else {
 		clk_disable_unprepare(w->clk);
 		return 0;
 	}
-#endif
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(dapm_clock_event);
@@ -1439,10 +1486,16 @@
 {
 	int *sort;
 
+	BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq) != SND_SOC_DAPM_TYPE_COUNT);
+	BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq) != SND_SOC_DAPM_TYPE_COUNT);
+
 	if (power_up)
 		sort = dapm_up_seq;
 	else
 		sort = dapm_down_seq;
+
+	WARN_ONCE(sort[a->id] == 0, "offset a->id %d not initialized\n", a->id);
+	WARN_ONCE(sort[b->id] == 0, "offset b->id %d not initialized\n", b->id);
 
 	if (sort[a->id] != sort[b->id])
 		return sort[a->id] - sort[b->id];
@@ -1611,15 +1664,15 @@
 		/* Do we need to apply any queued changes? */
 		if (sort[w->id] != cur_sort || w->reg != cur_reg ||
 		    w->dapm != cur_dapm || w->subseq != cur_subseq) {
-			if (cur_dapm && !list_empty(&pending))
+			if (!list_empty(&pending))
 				dapm_seq_run_coalesced(card, &pending);
 
-			if (cur_dapm && cur_dapm->seq_notifier) {
+			if (cur_dapm && cur_dapm->component) {
 				for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
 					if (sort[i] == cur_sort)
-						cur_dapm->seq_notifier(cur_dapm,
-								       i,
-								       cur_subseq);
+						snd_soc_component_seq_notifier(
+							cur_dapm->component,
+							i, cur_subseq);
 			}
 
 			if (cur_dapm && w->dapm != cur_dapm)
@@ -1635,8 +1688,7 @@
 		switch (w->id) {
 		case snd_soc_dapm_pre:
 			if (!w->event)
-				list_for_each_entry_safe_continue(w, n, list,
-								  power_list);
+				continue;
 
 			if (event == SND_SOC_DAPM_STREAM_START)
 				ret = w->event(w,
@@ -1648,8 +1700,7 @@
 
 		case snd_soc_dapm_post:
 			if (!w->event)
-				list_for_each_entry_safe_continue(w, n, list,
-								  power_list);
+				continue;
 
 			if (event == SND_SOC_DAPM_STREAM_START)
 				ret = w->event(w,
@@ -1674,19 +1725,19 @@
 				"ASoC: Failed to apply widget power: %d\n", ret);
 	}
 
-	if (cur_dapm && !list_empty(&pending))
+	if (!list_empty(&pending))
 		dapm_seq_run_coalesced(card, &pending);
 
-	if (cur_dapm && cur_dapm->seq_notifier) {
+	if (cur_dapm && cur_dapm->component) {
 		for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
 			if (sort[i] == cur_sort)
-				cur_dapm->seq_notifier(cur_dapm,
-						       i, cur_subseq);
+				snd_soc_component_seq_notifier(
+					cur_dapm->component,
+					i, cur_subseq);
 	}
 
-	list_for_each_entry(d, &card->dapm_list, list) {
+	for_each_card_dapms(card, d)
 		soc_dapm_async_complete(d);
-	}
 }
 
 static void dapm_widget_update(struct snd_soc_card *card)
@@ -1702,9 +1753,7 @@
 
 	wlist = dapm_kcontrol_get_wlist(update->kcontrol);
 
-	for (wi = 0; wi < wlist->num_widgets; wi++) {
-		w = wlist->widgets[wi];
-
+	for_each_dapm_widgets(wlist, wi, w) {
 		if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
 			ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
 			if (ret != 0)
@@ -1731,9 +1780,7 @@
 				w->name, ret);
 	}
 
-	for (wi = 0; wi < wlist->num_widgets; wi++) {
-		w = wlist->widgets[wi];
-
+	for_each_dapm_widgets(wlist, wi, w) {
 		if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
 			ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
 			if (ret != 0)
@@ -1754,7 +1801,7 @@
 	/* If we're off and we're not supposed to go into STANDBY */
 	if (d->bias_level == SND_SOC_BIAS_OFF &&
 	    d->target_bias_level != SND_SOC_BIAS_OFF) {
-		if (d->dev)
+		if (d->dev && cookie)
 			pm_runtime_get_sync(d->dev);
 
 		ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
@@ -1801,7 +1848,7 @@
 			dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
 				ret);
 
-		if (d->dev)
+		if (d->dev && cookie)
 			pm_runtime_put(d->dev);
 	}
 
@@ -1915,13 +1962,13 @@
 	LIST_HEAD(down_list);
 	ASYNC_DOMAIN_EXCLUSIVE(async_domain);
 	enum snd_soc_bias_level bias;
+	int ret;
 
 	lockdep_assert_held(&card->dapm_mutex);
 
 	trace_snd_soc_dapm_start(card);
-	mutex_lock(&card->dapm_power_mutex);
 
-	list_for_each_entry(d, &card->dapm_list, list) {
+	for_each_card_dapms(card, d) {
 		if (dapm_idle_bias_off(d))
 			d->target_bias_level = SND_SOC_BIAS_OFF;
 		else
@@ -1940,7 +1987,7 @@
 		dapm_power_one_widget(w, &up_list, &down_list);
 	}
 
-	list_for_each_entry(w, &card->widgets, list) {
+	for_each_card_widgets(card, w) {
 		switch (w->id) {
 		case snd_soc_dapm_pre:
 		case snd_soc_dapm_post:
@@ -1985,10 +2032,10 @@
 	 * they're not ground referenced.
 	 */
 	bias = SND_SOC_BIAS_OFF;
-	list_for_each_entry(d, &card->dapm_list, list)
+	for_each_card_dapms(card, d)
 		if (d->target_bias_level > bias)
 			bias = d->target_bias_level;
-	list_for_each_entry(d, &card->dapm_list, list)
+	for_each_card_dapms(card, d)
 		if (!dapm_idle_bias_off(d))
 			d->target_bias_level = bias;
 
@@ -1997,8 +2044,8 @@
 	/* Run card bias changes at first */
 	dapm_pre_sequence_async(&card->dapm, 0);
 	/* Run other bias changes in parallel */
-	list_for_each_entry(d, &card->dapm_list, list) {
-		if (d != &card->dapm)
+	for_each_card_dapms(card, d) {
+		if (d != &card->dapm && d->bias_level != d->target_bias_level)
 			async_schedule_domain(dapm_pre_sequence_async, d,
 						&async_domain);
 	}
@@ -2021,8 +2068,8 @@
 	dapm_seq_run(card, &up_list, event, true);
 
 	/* Run all the bias changes in parallel */
-	list_for_each_entry(d, &card->dapm_list, list) {
-		if (d != &card->dapm)
+	for_each_card_dapms(card, d) {
+		if (d != &card->dapm && d->bias_level != d->target_bias_level)
 			async_schedule_domain(dapm_post_sequence_async, d,
 						&async_domain);
 	}
@@ -2031,15 +2078,18 @@
 	dapm_post_sequence_async(&card->dapm, 0);
 
 	/* do we need to notify any clients that DAPM event is complete */
-	list_for_each_entry(d, &card->dapm_list, list) {
-		if (d->stream_event)
-			d->stream_event(d, event);
+	for_each_card_dapms(card, d) {
+		if (!d->component)
+			continue;
+
+		ret = snd_soc_component_stream_event(d->component, event);
+		if (ret < 0)
+			return ret;
 	}
 
 	pop_dbg(card->dev, card->pop_time,
 		"DAPM sequencing finished, waiting %dms\n", card->pop_time);
 	pop_wait(card->pop_time);
-	mutex_unlock(&card->dapm_power_mutex);
 
 	trace_snd_soc_dapm_done(card);
 
@@ -2159,49 +2209,30 @@
 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
 	struct dentry *parent)
 {
-	struct dentry *d;
-
 	if (!parent || IS_ERR(parent))
 		return;
 
 	dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
 
-	if (IS_ERR(dapm->debugfs_dapm)) {
-		dev_warn(dapm->dev,
-			 "ASoC: Failed to create DAPM debugfs directory %ld\n",
-			 PTR_ERR(dapm->debugfs_dapm));
-		return;
-	}
-
-	d = debugfs_create_file("bias_level", 0444,
-				dapm->debugfs_dapm, dapm,
-				&dapm_bias_fops);
-	if (IS_ERR(d))
-		dev_warn(dapm->dev,
-			 "ASoC: Failed to create bias level debugfs file: %ld\n",
-			 PTR_ERR(d));
+	debugfs_create_file("bias_level", 0444, dapm->debugfs_dapm, dapm,
+			    &dapm_bias_fops);
 }
 
 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
 {
 	struct snd_soc_dapm_context *dapm = w->dapm;
-	struct dentry *d;
 
 	if (!dapm->debugfs_dapm || !w->name)
 		return;
 
-	d = debugfs_create_file(w->name, 0444,
-				dapm->debugfs_dapm, w,
-				&dapm_widget_power_fops);
-	if (IS_ERR(d))
-		dev_warn(w->dapm->dev,
-			 "ASoC: Failed to create %s debugfs file: %ld\n",
-			 w->name, PTR_ERR(d));
+	debugfs_create_file(w->name, 0444, dapm->debugfs_dapm, w,
+			    &dapm_widget_power_fops);
 }
 
 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
 {
 	debugfs_remove_recursive(dapm->debugfs_dapm);
+	dapm->debugfs_dapm = NULL;
 }
 
 #else
@@ -2253,7 +2284,7 @@
 	dapm_kcontrol_for_each_path(path, kcontrol) {
 		found = 1;
 		/* we now need to match the string in the enum to the path */
-		if (!(strcmp(path->name, e->texts[mux])))
+		if (e && !(strcmp(path->name, e->texts[mux])))
 			connect = true;
 		else
 			connect = false;
@@ -2280,7 +2311,7 @@
 	card->update = NULL;
 	mutex_unlock(&card->dapm_mutex);
 	if (ret > 0)
-		soc_dpcm_runtime_update(card);
+		snd_soc_dpcm_runtime_update(card);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
@@ -2345,7 +2376,7 @@
 	card->update = NULL;
 	mutex_unlock(&card->dapm_mutex);
 	if (ret > 0)
-		soc_dpcm_runtime_update(card);
+		snd_soc_dpcm_runtime_update(card);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
@@ -2365,7 +2396,7 @@
 	if (!cmpnt->card)
 		return 0;
 
-	list_for_each_entry(w, &cmpnt->card->widgets, list) {
+	for_each_card_widgets(cmpnt->card, w) {
 		if (w->dapm != dapm)
 			continue;
 
@@ -2379,6 +2410,7 @@
 		case snd_soc_dapm_dac:
 		case snd_soc_dapm_adc:
 		case snd_soc_dapm_pga:
+		case snd_soc_dapm_effect:
 		case snd_soc_dapm_out_drv:
 		case snd_soc_dapm_mixer:
 		case snd_soc_dapm_mixer_named_ctl:
@@ -2419,12 +2451,13 @@
 	struct device_attribute *attr, char *buf)
 {
 	struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
+	struct snd_soc_dai *codec_dai;
 	int i, count = 0;
 
 	mutex_lock(&rtd->card->dapm_mutex);
 
-	for (i = 0; i < rtd->num_codecs; i++) {
-		struct snd_soc_component *cmpnt = rtd->codec_dais[i]->component;
+	for_each_rtd_codec_dais(rtd, i, codec_dai) {
+		struct snd_soc_component *cmpnt = codec_dai->component;
 
 		count += dapm_widget_show_component(cmpnt, buf + count);
 	}
@@ -2469,6 +2502,7 @@
 
 	kfree(w->kcontrols);
 	kfree_const(w->name);
+	kfree_const(w->sname);
 	kfree(w);
 }
 
@@ -2483,7 +2517,7 @@
 {
 	struct snd_soc_dapm_widget *w, *next_w;
 
-	list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
+	for_each_card_widgets_safe(dapm->card, w, next_w) {
 		if (w->dapm != dapm)
 			continue;
 		snd_soc_dapm_free_widget(w);
@@ -2497,9 +2531,20 @@
 {
 	struct snd_soc_dapm_widget *w;
 	struct snd_soc_dapm_widget *fallback = NULL;
+	char prefixed_pin[80];
+	const char *pin_name;
+	const char *prefix = soc_dapm_prefix(dapm);
 
-	list_for_each_entry(w, &dapm->card->widgets, list) {
-		if (!strcmp(w->name, pin)) {
+	if (prefix) {
+		snprintf(prefixed_pin, sizeof(prefixed_pin), "%s %s",
+			 prefix, pin);
+		pin_name = prefixed_pin;
+	} else {
+		pin_name = pin;
+	}
+
+	for_each_card_widgets(dapm->card, w) {
+		if (!strcmp(w->name, pin_name)) {
 			if (w->dapm == dapm)
 				return w;
 			else
@@ -2600,6 +2645,78 @@
 	return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
+
+static int dapm_update_dai_chan(struct snd_soc_dapm_path *p,
+				struct snd_soc_dapm_widget *w,
+				int channels)
+{
+	switch (w->id) {
+	case snd_soc_dapm_aif_out:
+	case snd_soc_dapm_aif_in:
+		break;
+	default:
+		return 0;
+	}
+
+	dev_dbg(w->dapm->dev, "%s DAI route %s -> %s\n",
+		w->channel < channels ? "Connecting" : "Disconnecting",
+		p->source->name, p->sink->name);
+
+	if (w->channel < channels)
+		soc_dapm_connect_path(p, true, "dai update");
+	else
+		soc_dapm_connect_path(p, false, "dai update");
+
+	return 0;
+}
+
+static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream,
+				    struct snd_pcm_hw_params *params,
+				    struct snd_soc_dai *dai)
+{
+	int dir = substream->stream;
+	int channels = params_channels(params);
+	struct snd_soc_dapm_path *p;
+	struct snd_soc_dapm_widget *w;
+	int ret;
+
+	w = snd_soc_dai_get_widget(dai, dir);
+
+	if (!w)
+		return 0;
+
+	dev_dbg(dai->dev, "Update DAI routes for %s %s\n", dai->name,
+		dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture");
+
+	snd_soc_dapm_widget_for_each_sink_path(w, p) {
+		ret = dapm_update_dai_chan(p, p->sink, channels);
+		if (ret < 0)
+			return ret;
+	}
+
+	snd_soc_dapm_widget_for_each_source_path(w, p) {
+		ret = dapm_update_dai_chan(p, p->source, channels);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params,
+			    struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	int ret;
+
+	mutex_lock_nested(&rtd->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+	ret = dapm_update_dai_unlocked(substream, params, dai);
+	mutex_unlock(&rtd->card->dapm_mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai);
 
 /*
  * dapm_update_widget_flags() - Re-compute widget sink and source flags
@@ -2817,6 +2934,8 @@
 	char prefixed_sink[80];
 	char prefixed_source[80];
 	const char *prefix;
+	unsigned int sink_ref = 0;
+	unsigned int source_ref = 0;
 	int ret;
 
 	prefix = soc_dapm_prefix(dapm);
@@ -2842,7 +2961,7 @@
 	 * find src and dest widgets over all widgets but favor a widget from
 	 * current DAPM context
 	 */
-	list_for_each_entry(w, &dapm->card->widgets, list) {
+	for_each_card_widgets(dapm->card, w) {
 		if (!wsink && !(strcmp(w->name, sink))) {
 			wtsink = w;
 			if (w->dapm == dapm) {
@@ -2850,6 +2969,11 @@
 				if (wsource)
 					break;
 			}
+			sink_ref++;
+			if (sink_ref > 1)
+				dev_warn(dapm->dev,
+					"ASoC: sink widget %s overwritten\n",
+					w->name);
 			continue;
 		}
 		if (!wsource && !(strcmp(w->name, source))) {
@@ -2859,6 +2983,11 @@
 				if (wsink)
 					break;
 			}
+			source_ref++;
+			if (source_ref > 1)
+				dev_warn(dapm->dev,
+					"ASoC: source widget %s overwritten\n",
+					w->name);
 		}
 	}
 	/* use widget from another DAPM context if not found from this */
@@ -3111,7 +3240,7 @@
 
 	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
 
-	list_for_each_entry(w, &card->widgets, list)
+	for_each_card_widgets(card, w)
 	{
 		if (w->new)
 			continue;
@@ -3137,6 +3266,7 @@
 			dapm_new_mux(w);
 			break;
 		case snd_soc_dapm_pga:
+		case snd_soc_dapm_effect:
 		case snd_soc_dapm_out_drv:
 			dapm_new_pga(w);
 			break;
@@ -3149,7 +3279,7 @@
 
 		/* Read the initial power state from the device */
 		if (w->reg >= 0) {
-			soc_dapm_read(w->dapm, w->reg, &val);
+			val = soc_dapm_read(w->dapm, w->reg);
 			val = val >> w->shift;
 			val &= w->mask;
 			if (val == w->on_val)
@@ -3191,15 +3321,14 @@
 	unsigned int mask = (1 << fls(max)) - 1;
 	unsigned int invert = mc->invert;
 	unsigned int reg_val, val, rval = 0;
-	int ret = 0;
 
 	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
 	if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
-		ret = soc_dapm_read(dapm, reg, &reg_val);
+		reg_val = soc_dapm_read(dapm, reg);
 		val = (reg_val >> shift) & mask;
 
-		if (ret == 0 && reg != mc->rreg)
-			ret = soc_dapm_read(dapm, mc->rreg, &reg_val);
+		if (reg != mc->rreg)
+			reg_val = soc_dapm_read(dapm, mc->rreg);
 
 		if (snd_soc_volsw_is_stereo(mc))
 			rval = (reg_val >> mc->rshift) & mask;
@@ -3211,9 +3340,6 @@
 			rval = (reg_val >> width) & mask;
 	}
 	mutex_unlock(&card->dapm_mutex);
-
-	if (ret)
-		return ret;
 
 	if (invert)
 		ucontrol->value.integer.value[0] = max - val;
@@ -3227,7 +3353,7 @@
 			ucontrol->value.integer.value[1] = rval;
 	}
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
 
@@ -3306,7 +3432,6 @@
 			update.val = val;
 			card->update = &update;
 		}
-		change |= reg_change;
 
 		ret = soc_dapm_mixer_update_power(card, kcontrol, connect,
 						  rconnect);
@@ -3317,7 +3442,7 @@
 	mutex_unlock(&card->dapm_mutex);
 
 	if (ret > 0)
-		soc_dpcm_runtime_update(card);
+		snd_soc_dpcm_runtime_update(card);
 
 	return change;
 }
@@ -3342,11 +3467,7 @@
 
 	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) {
-			mutex_unlock(&card->dapm_mutex);
-			return ret;
-		}
+		reg_val = soc_dapm_read(dapm, e->reg);
 	} else {
 		reg_val = dapm_kcontrol_get_value(kcontrol);
 	}
@@ -3412,7 +3533,6 @@
 			update.val = val;
 			card->update = &update;
 		}
-		change |= reg_change;
 
 		ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
 
@@ -3422,7 +3542,7 @@
 	mutex_unlock(&card->dapm_mutex);
 
 	if (ret > 0)
-		soc_dpcm_runtime_update(card);
+		snd_soc_dpcm_runtime_update(card);
 
 	return change;
 }
@@ -3495,35 +3615,6 @@
 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
 
 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);
-	/* Do not nag about probe deferrals */
-	if (IS_ERR(w)) {
-		int ret = PTR_ERR(w);
-
-		if (ret != -EPROBE_DEFER)
-			dev_err(dapm->dev,
-				"ASoC: Failed to create DAPM control %s (%d)\n",
-				widget->name, ret);
-		goto out_unlock;
-	}
-	if (!w)
-		dev_err(dapm->dev,
-			"ASoC: Failed to create DAPM control %s\n",
-			widget->name);
-
-out_unlock:
-	mutex_unlock(&dapm->card->dapm_mutex);
-	return w;
-}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
-
-struct snd_soc_dapm_widget *
 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
 			 const struct snd_soc_dapm_widget *widget)
 {
@@ -3533,24 +3624,20 @@
 	int ret;
 
 	if ((w = dapm_cnew_widget(widget)) == NULL)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	switch (w->id) {
 	case snd_soc_dapm_regulator_supply:
 		w->regulator = devm_regulator_get(dapm->dev, w->name);
 		if (IS_ERR(w->regulator)) {
 			ret = PTR_ERR(w->regulator);
-			if (ret == -EPROBE_DEFER)
-				return ERR_PTR(ret);
-			dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
-				w->name, ret);
-			return NULL;
+			goto request_failed;
 		}
 
 		if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
 			ret = regulator_allow_bypass(w->regulator, true);
 			if (ret != 0)
-				dev_warn(w->dapm->dev,
+				dev_warn(dapm->dev,
 					 "ASoC: Failed to bypass %s: %d\n",
 					 w->name, ret);
 		}
@@ -3559,27 +3646,18 @@
 		w->pinctrl = devm_pinctrl_get(dapm->dev);
 		if (IS_ERR(w->pinctrl)) {
 			ret = PTR_ERR(w->pinctrl);
-			if (ret == -EPROBE_DEFER)
-				return ERR_PTR(ret);
-			dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
-				w->name, ret);
-			return NULL;
+			goto request_failed;
 		}
+
+		/* set to sleep_state when initializing */
+		dapm_pinctrl_event(w, NULL, SND_SOC_DAPM_POST_PMD);
 		break;
 	case snd_soc_dapm_clock_supply:
-#ifdef CONFIG_CLKDEV_LOOKUP
 		w->clk = devm_clk_get(dapm->dev, w->name);
 		if (IS_ERR(w->clk)) {
 			ret = PTR_ERR(w->clk);
-			if (ret == -EPROBE_DEFER)
-				return ERR_PTR(ret);
-			dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
-				w->name, ret);
-			return NULL;
+			goto request_failed;
 		}
-#else
-		return NULL;
-#endif
 		break;
 	default:
 		break;
@@ -3591,8 +3669,9 @@
 	else
 		w->name = kstrdup_const(widget->name, GFP_KERNEL);
 	if (w->name == NULL) {
+		kfree_const(w->sname);
 		kfree(w);
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	}
 
 	switch (w->id) {
@@ -3635,6 +3714,13 @@
 	case snd_soc_dapm_dac:
 	case snd_soc_dapm_aif_in:
 	case snd_soc_dapm_pga:
+	case snd_soc_dapm_buffer:
+	case snd_soc_dapm_scheduler:
+	case snd_soc_dapm_effect:
+	case snd_soc_dapm_src:
+	case snd_soc_dapm_asrc:
+	case snd_soc_dapm_encoder:
+	case snd_soc_dapm_decoder:
 	case snd_soc_dapm_out_drv:
 	case snd_soc_dapm_micbias:
 	case snd_soc_dapm_line:
@@ -3659,6 +3745,7 @@
 	w->dapm = dapm;
 	INIT_LIST_HEAD(&w->list);
 	INIT_LIST_HEAD(&w->dirty);
+	/* see for_each_card_widgets */
 	list_add_tail(&w->list, &dapm->card->widgets);
 
 	snd_soc_dapm_for_each_direction(dir) {
@@ -3669,7 +3756,39 @@
 	/* machine layer sets up unconnected pins and insertions */
 	w->connected = 1;
 	return w;
+
+request_failed:
+	if (ret != -EPROBE_DEFER)
+		dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
+			w->name, ret);
+
+	kfree_const(w->sname);
+	kfree(w);
+	return ERR_PTR(ret);
 }
+
+/**
+ * snd_soc_dapm_new_control - create new dapm control
+ * @dapm: DAPM context
+ * @widget: widget template
+ *
+ * Creates new DAPM control based upon a template.
+ *
+ * Returns a widget pointer on success or an error pointer on failure
+ */
+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);
+	mutex_unlock(&dapm->card->dapm_mutex);
+
+	return w;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
 
 /**
  * snd_soc_dapm_new_controls - create new dapm controls
@@ -3694,19 +3813,6 @@
 		w = snd_soc_dapm_new_control_unlocked(dapm, widget);
 		if (IS_ERR(w)) {
 			ret = PTR_ERR(w);
-			/* Do not nag about probe deferrals */
-			if (ret == -EPROBE_DEFER)
-				break;
-			dev_err(dapm->dev,
-				"ASoC: Failed to create DAPM control %s (%d)\n",
-				widget->name, ret);
-			break;
-		}
-		if (!w) {
-			dev_err(dapm->dev,
-				"ASoC: Failed to create DAPM control %s\n",
-				widget->name);
-			ret = -ENOMEM;
 			break;
 		}
 		widget++;
@@ -3716,34 +3822,70 @@
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
 
-static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
-				  struct snd_kcontrol *kcontrol, int event)
+static int
+snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w,
+			       struct snd_pcm_substream *substream)
 {
-	struct snd_soc_dapm_path *source_p, *sink_p;
+	struct snd_soc_dapm_path *path;
 	struct snd_soc_dai *source, *sink;
-	struct snd_soc_pcm_runtime *rtd = w->priv;
-	const struct snd_soc_pcm_stream *config = w->params + w->params_select;
-	struct snd_pcm_substream substream;
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_pcm_hw_params *params = NULL;
+	const struct snd_soc_pcm_stream *config = NULL;
 	struct snd_pcm_runtime *runtime = NULL;
 	unsigned int fmt;
 	int ret = 0;
 
-	if (WARN_ON(!config) ||
-	    WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
-		    list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
-		return -EINVAL;
+	params = kzalloc(sizeof(*params), GFP_KERNEL);
+	if (!params)
+		return -ENOMEM;
 
-	/* We only support a single source and sink, pick the first */
-	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]);
+	runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
+	if (!runtime) {
+		ret = -ENOMEM;
+		goto out;
+	}
 
-	source = source_p->source->priv;
-	sink = sink_p->sink->priv;
+	substream->runtime = runtime;
+
+	substream->stream = SNDRV_PCM_STREAM_CAPTURE;
+	snd_soc_dapm_widget_for_each_source_path(w, path) {
+		source = path->source->priv;
+
+		ret = snd_soc_dai_startup(source, substream);
+		if (ret < 0) {
+			dev_err(source->dev,
+				"ASoC: startup() failed: %d\n", ret);
+			goto out;
+		}
+		snd_soc_dai_activate(source, substream->stream);
+	}
+
+	substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
+	snd_soc_dapm_widget_for_each_sink_path(w, path) {
+		sink = path->sink->priv;
+
+		ret = snd_soc_dai_startup(sink, substream);
+		if (ret < 0) {
+			dev_err(sink->dev,
+				"ASoC: startup() failed: %d\n", ret);
+			goto out;
+		}
+		snd_soc_dai_activate(sink, substream->stream);
+	}
+
+	substream->hw_opened = 1;
+
+	/*
+	 * Note: getting the config after .startup() gives a chance to
+	 * either party on the link to alter the configuration if
+	 * necessary
+	 */
+	config = rtd->dai_link->params + rtd->params_select;
+	if (WARN_ON(!config)) {
+		dev_err(w->dapm->dev, "ASoC: link config missing\n");
+		ret = -EINVAL;
+		goto out;
+	}
 
 	/* Be a little careful as we don't want to overflow the mask array */
 	if (config->formats) {
@@ -3751,95 +3893,127 @@
 	} else {
 		dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
 			 config->formats);
-		fmt = 0;
-	}
 
-	/* Currently very limited parameter selection */
-	params = kzalloc(sizeof(*params), GFP_KERNEL);
-	if (!params) {
-		ret = -ENOMEM;
+		ret = -EINVAL;
 		goto out;
 	}
-	snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
 
+	snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
 	hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
 		config->rate_min;
 	hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
 		config->rate_max;
-
 	hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
 		= config->channels_min;
 	hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
 		= config->channels_max;
 
-	memset(&substream, 0, sizeof(substream));
+	substream->stream = SNDRV_PCM_STREAM_CAPTURE;
+	snd_soc_dapm_widget_for_each_source_path(w, path) {
+		source = path->source->priv;
 
-	/* Allocate a dummy snd_pcm_runtime for startup() and other ops() */
-	runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
-	if (!runtime) {
-		ret = -ENOMEM;
-		goto out;
+		ret = snd_soc_dai_hw_params(source, substream, params);
+		if (ret < 0)
+			goto out;
+
+		dapm_update_dai_unlocked(substream, params, source);
 	}
-	substream.runtime = runtime;
-	substream.private_data = rtd;
+
+	substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
+	snd_soc_dapm_widget_for_each_sink_path(w, path) {
+		sink = path->sink->priv;
+
+		ret = snd_soc_dai_hw_params(sink, substream, params);
+		if (ret < 0)
+			goto out;
+
+		dapm_update_dai_unlocked(substream, params, sink);
+	}
+
+	runtime->format = params_format(params);
+	runtime->subformat = params_subformat(params);
+	runtime->channels = params_channels(params);
+	runtime->rate = params_rate(params);
+
+out:
+	kfree(params);
+	return ret;
+}
+
+static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
+				  struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_dapm_path *path;
+	struct snd_soc_dai *source, *sink;
+	struct snd_pcm_substream *substream = w->priv;
+	int ret = 0, saved_stream = substream->stream;
+
+	if (WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
+		    list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
+		return -EINVAL;
 
 	switch (event) {
 	case SND_SOC_DAPM_PRE_PMU:
-		substream.stream = SNDRV_PCM_STREAM_CAPTURE;
-		if (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);
+		ret = snd_soc_dai_link_event_pre_pmu(w, substream);
 		if (ret < 0)
 			goto out;
 
-		substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
-		if (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;
 		break;
 
 	case SND_SOC_DAPM_POST_PMU:
-		ret = snd_soc_dai_digital_mute(sink, 0,
-					       SNDRV_PCM_STREAM_PLAYBACK);
-		if (ret != 0 && ret != -ENOTSUPP)
-			dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
-		ret = 0;
+		snd_soc_dapm_widget_for_each_sink_path(w, path) {
+			sink = path->sink->priv;
+
+			ret = snd_soc_dai_digital_mute(sink, 0,
+						       SNDRV_PCM_STREAM_PLAYBACK);
+			if (ret != 0 && ret != -ENOTSUPP)
+				dev_warn(sink->dev,
+					 "ASoC: Failed to unmute: %d\n", ret);
+			ret = 0;
+		}
 		break;
 
 	case SND_SOC_DAPM_PRE_PMD:
-		ret = snd_soc_dai_digital_mute(sink, 1,
-					       SNDRV_PCM_STREAM_PLAYBACK);
-		if (ret != 0 && ret != -ENOTSUPP)
-			dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
-		ret = 0;
+		snd_soc_dapm_widget_for_each_sink_path(w, path) {
+			sink = path->sink->priv;
 
-		source->active--;
-		if (source->driver->ops->shutdown) {
-			substream.stream = SNDRV_PCM_STREAM_CAPTURE;
-			source->driver->ops->shutdown(&substream, source);
+			ret = snd_soc_dai_digital_mute(sink, 1,
+						       SNDRV_PCM_STREAM_PLAYBACK);
+			if (ret != 0 && ret != -ENOTSUPP)
+				dev_warn(sink->dev,
+					 "ASoC: Failed to mute: %d\n", ret);
+			ret = 0;
 		}
 
-		sink->active--;
-		if (sink->driver->ops->shutdown) {
-			substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
-			sink->driver->ops->shutdown(&substream, sink);
+		substream->stream = SNDRV_PCM_STREAM_CAPTURE;
+		snd_soc_dapm_widget_for_each_source_path(w, path) {
+			source = path->source->priv;
+			snd_soc_dai_hw_free(source, substream);
 		}
+
+		substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
+		snd_soc_dapm_widget_for_each_sink_path(w, path) {
+			sink = path->sink->priv;
+			snd_soc_dai_hw_free(sink, substream);
+		}
+
+		substream->stream = SNDRV_PCM_STREAM_CAPTURE;
+		snd_soc_dapm_widget_for_each_source_path(w, path) {
+			source = path->source->priv;
+			snd_soc_dai_deactivate(source, substream->stream);
+			snd_soc_dai_shutdown(source, substream, 0);
+		}
+
+		substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
+		snd_soc_dapm_widget_for_each_sink_path(w, path) {
+			sink = path->sink->priv;
+			snd_soc_dai_deactivate(sink, substream->stream);
+			snd_soc_dai_shutdown(sink, substream, 0);
+		}
+		break;
+
+	case SND_SOC_DAPM_POST_PMD:
+		kfree(substream->runtime);
 		break;
 
 	default:
@@ -3848,8 +4022,8 @@
 	}
 
 out:
-	kfree(runtime);
-	kfree(params);
+	/* Restore the substream direction */
+	substream->stream = saved_stream;
 	return ret;
 }
 
@@ -3857,8 +4031,9 @@
 			  struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
+	struct snd_soc_pcm_runtime *rtd = w->priv;
 
-	ucontrol->value.enumerated.item[0] = w->params_select;
+	ucontrol->value.enumerated.item[0] = rtd->params_select;
 
 	return 0;
 }
@@ -3867,18 +4042,19 @@
 			  struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
+	struct snd_soc_pcm_runtime *rtd = w->priv;
 
 	/* Can't change the config when widget is already powered */
 	if (w->power)
 		return -EBUSY;
 
-	if (ucontrol->value.enumerated.item[0] == w->params_select)
+	if (ucontrol->value.enumerated.item[0] == rtd->params_select)
 		return 0;
 
-	if (ucontrol->value.enumerated.item[0] >= w->num_params)
+	if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_params)
 		return -EINVAL;
 
-	w->params_select = ucontrol->value.enumerated.item[0];
+	rtd->params_select = ucontrol->value.enumerated.item[0];
 
 	return 1;
 }
@@ -3969,24 +4145,23 @@
 	return NULL;
 }
 
-int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
-			 struct snd_soc_pcm_runtime *rtd,
-			 const struct snd_soc_pcm_stream *params,
-			 unsigned int num_params,
-			 struct snd_soc_dapm_widget *source,
-			 struct snd_soc_dapm_widget *sink)
+static struct snd_soc_dapm_widget *
+snd_soc_dapm_new_dai(struct snd_soc_card *card,
+		     struct snd_pcm_substream *substream,
+		     char *id)
 {
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_dapm_widget template;
 	struct snd_soc_dapm_widget *w;
 	const char **w_param_text;
-	unsigned long private_value;
+	unsigned long private_value = 0;
 	char *link_name;
 	int ret;
 
 	link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
-				   source->name, sink->name);
+				   rtd->dai_link->name, id);
 	if (!link_name)
-		return -ENOMEM;
+		return ERR_PTR(-ENOMEM);
 
 	memset(&template, 0, sizeof(template));
 	template.reg = SND_SOC_NOPM;
@@ -3994,13 +4169,14 @@
 	template.name = link_name;
 	template.event = snd_soc_dai_link_event;
 	template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
-		SND_SOC_DAPM_PRE_PMD;
+		SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD;
 	template.kcontrol_news = NULL;
 
 	/* allocate memory for control, only in case of multiple configs */
-	if (num_params > 1) {
-		w_param_text = devm_kcalloc(card->dev, num_params,
-					sizeof(char *), GFP_KERNEL);
+	if (rtd->dai_link->num_params > 1) {
+		w_param_text = devm_kcalloc(card->dev,
+					    rtd->dai_link->num_params,
+					    sizeof(char *), GFP_KERNEL);
 		if (!w_param_text) {
 			ret = -ENOMEM;
 			goto param_fail;
@@ -4009,7 +4185,9 @@
 		template.num_kcontrols = 1;
 		template.kcontrol_news =
 					snd_soc_dapm_alloc_kcontrol(card,
-						link_name, params, num_params,
+						link_name,
+						rtd->dai_link->params,
+						rtd->dai_link->num_params,
 						w_param_text, &private_value);
 		if (!template.kcontrol_news) {
 			ret = -ENOMEM;
@@ -4023,37 +4201,22 @@
 	w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
 	if (IS_ERR(w)) {
 		ret = PTR_ERR(w);
-		/* Do not nag about probe deferrals */
-		if (ret != -EPROBE_DEFER)
-			dev_err(card->dev,
-				"ASoC: Failed to create %s widget (%d)\n",
-				link_name, ret);
-		goto outfree_kcontrol_news;
-	}
-	if (!w) {
-		dev_err(card->dev, "ASoC: Failed to create %s widget\n",
-			link_name);
-		ret = -ENOMEM;
+		dev_err(rtd->dev, "ASoC: Failed to create %s widget: %d\n",
+			link_name, ret);
 		goto outfree_kcontrol_news;
 	}
 
-	w->params = params;
-	w->num_params = num_params;
-	w->priv = rtd;
+	w->priv = substream;
 
-	ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL);
-	if (ret)
-		goto outfree_w;
-	return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL);
+	return w;
 
-outfree_w:
-	devm_kfree(card->dev, w);
 outfree_kcontrol_news:
 	devm_kfree(card->dev, (void *)template.kcontrol_news);
-	snd_soc_dapm_free_kcontrol(card, &private_value, num_params, w_param_text);
+	snd_soc_dapm_free_kcontrol(card, &private_value,
+				   rtd->dai_link->num_params, w_param_text);
 param_fail:
 	devm_kfree(card->dev, link_name);
-	return ret;
+	return ERR_PTR(ret);
 }
 
 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
@@ -4076,21 +4239,8 @@
 			template.name);
 
 		w = snd_soc_dapm_new_control_unlocked(dapm, &template);
-		if (IS_ERR(w)) {
-			int ret = PTR_ERR(w);
-
-			/* Do not nag about probe deferrals */
-			if (ret != -EPROBE_DEFER)
-				dev_err(dapm->dev,
-				"ASoC: Failed to create %s widget (%d)\n",
-				dai->driver->playback.stream_name, ret);
-			return ret;
-		}
-		if (!w) {
-			dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
-				dai->driver->playback.stream_name);
-			return -ENOMEM;
-		}
+		if (IS_ERR(w))
+			return PTR_ERR(w);
 
 		w->priv = dai;
 		dai->playback_widget = w;
@@ -4105,21 +4255,8 @@
 			template.name);
 
 		w = snd_soc_dapm_new_control_unlocked(dapm, &template);
-		if (IS_ERR(w)) {
-			int ret = PTR_ERR(w);
-
-			/* Do not nag about probe deferrals */
-			if (ret != -EPROBE_DEFER)
-				dev_err(dapm->dev,
-				"ASoC: Failed to create %s widget (%d)\n",
-				dai->driver->playback.stream_name, ret);
-			return ret;
-		}
-		if (!w) {
-			dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
-				dai->driver->capture.stream_name);
-			return -ENOMEM;
-		}
+		if (IS_ERR(w))
+			return PTR_ERR(w);
 
 		w->priv = dai;
 		dai->capture_widget = w;
@@ -4135,7 +4272,7 @@
 	struct snd_soc_dai *dai;
 
 	/* For each DAI widget... */
-	list_for_each_entry(dai_w, &card->widgets, list) {
+	for_each_card_widgets(card, dai_w) {
 		switch (dai_w->id) {
 		case snd_soc_dapm_dai_in:
 		case snd_soc_dapm_dai_out:
@@ -4154,7 +4291,7 @@
 		dai = dai_w->priv;
 
 		/* ...find all widgets with the same stream and link them */
-		list_for_each_entry(w, &card->widgets, list) {
+		for_each_card_widgets(card, w) {
 			if (w->dapm != dai_w->dapm)
 				continue;
 
@@ -4184,39 +4321,76 @@
 	return 0;
 }
 
-static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
-					  struct snd_soc_pcm_runtime *rtd)
+static void dapm_connect_dai_routes(struct snd_soc_dapm_context *dapm,
+				    struct snd_soc_dai *src_dai,
+				    struct snd_soc_dapm_widget *src,
+				    struct snd_soc_dapm_widget *dai,
+				    struct snd_soc_dai *sink_dai,
+				    struct snd_soc_dapm_widget *sink)
 {
-	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-	struct snd_soc_dapm_widget *sink, *source;
-	int i;
+	dev_dbg(dapm->dev, "connected DAI link %s:%s -> %s:%s\n",
+		src_dai->component->name, src->name,
+		sink_dai->component->name, sink->name);
 
-	for (i = 0; i < rtd->num_codecs; i++) {
-		struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
+	if (dai) {
+		snd_soc_dapm_add_path(dapm, src, dai, NULL, NULL);
+		src = dai;
+	}
 
-		/* connect BE DAI playback if widgets are valid */
-		if (codec_dai->playback_widget && cpu_dai->playback_widget) {
-			source = cpu_dai->playback_widget;
-			sink = codec_dai->playback_widget;
-			dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
-				cpu_dai->component->name, source->name,
-				codec_dai->component->name, sink->name);
+	snd_soc_dapm_add_path(dapm, src, sink, NULL, NULL);
+}
 
-			snd_soc_dapm_add_path(&card->dapm, source, sink,
-				NULL, NULL);
+static void dapm_connect_dai_pair(struct snd_soc_card *card,
+				  struct snd_soc_pcm_runtime *rtd,
+				  struct snd_soc_dai *codec_dai,
+				  struct snd_soc_dai *cpu_dai)
+{
+	struct snd_soc_dai_link *dai_link = rtd->dai_link;
+	struct snd_soc_dapm_widget *dai, *codec, *playback_cpu, *capture_cpu;
+	struct snd_pcm_substream *substream;
+	struct snd_pcm_str *streams = rtd->pcm->streams;
+
+	if (dai_link->params) {
+		playback_cpu = cpu_dai->capture_widget;
+		capture_cpu = cpu_dai->playback_widget;
+	} else {
+		playback_cpu = cpu_dai->playback_widget;
+		capture_cpu = cpu_dai->capture_widget;
+	}
+
+	/* connect BE DAI playback if widgets are valid */
+	codec = codec_dai->playback_widget;
+
+	if (playback_cpu && codec) {
+		if (dai_link->params && !rtd->playback_widget) {
+			substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
+			dai = snd_soc_dapm_new_dai(card, substream, "playback");
+			if (IS_ERR(dai))
+				goto capture;
+			rtd->playback_widget = dai;
 		}
 
-		/* connect BE DAI capture if widgets are valid */
-		if (codec_dai->capture_widget && cpu_dai->capture_widget) {
-			source = codec_dai->capture_widget;
-			sink = cpu_dai->capture_widget;
-			dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
-				codec_dai->component->name, source->name,
-				cpu_dai->component->name, sink->name);
+		dapm_connect_dai_routes(&card->dapm, cpu_dai, playback_cpu,
+					rtd->playback_widget,
+					codec_dai, codec);
+	}
 
-			snd_soc_dapm_add_path(&card->dapm, source, sink,
-				NULL, NULL);
+capture:
+	/* connect BE DAI capture if widgets are valid */
+	codec = codec_dai->capture_widget;
+
+	if (codec && capture_cpu) {
+		if (dai_link->params && !rtd->capture_widget) {
+			substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
+			dai = snd_soc_dapm_new_dai(card, substream, "capture");
+			if (IS_ERR(dai))
+				return;
+			rtd->capture_widget = dai;
 		}
+
+		dapm_connect_dai_routes(&card->dapm, codec_dai, codec,
+					rtd->capture_widget,
+					cpu_dai, capture_cpu);
 	}
 }
 
@@ -4226,10 +4400,7 @@
 	struct snd_soc_dapm_widget *w;
 	unsigned int ep;
 
-	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
-		w = dai->playback_widget;
-	else
-		w = dai->capture_widget;
+	w = snd_soc_dai_get_widget(dai, stream);
 
 	if (w) {
 		dapm_mark_dirty(w, "stream event");
@@ -4263,29 +4434,41 @@
 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
 {
 	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_dai *codec_dai;
+	int i;
 
 	/* for each BE DAI link... */
-	list_for_each_entry(rtd, &card->rtd_list, list)  {
+	for_each_card_rtds(card, rtd)  {
 		/*
 		 * dynamic FE links have no fixed DAI mapping.
 		 * CODEC<->CODEC links have no direct connection.
 		 */
-		if (rtd->dai_link->dynamic || rtd->dai_link->params ||
-		    rtd->dai_link->dynamic_be)
+		if (rtd->dai_link->dynamic)
 			continue;
 
-		dapm_connect_dai_link_widgets(card, rtd);
+		if (rtd->num_cpus == 1) {
+			for_each_rtd_codec_dais(rtd, i, codec_dai)
+				dapm_connect_dai_pair(card, rtd, codec_dai,
+						      asoc_rtd_to_cpu(rtd, 0));
+		} else if (rtd->num_codecs == rtd->num_cpus) {
+			for_each_rtd_codec_dais(rtd, i, codec_dai)
+				dapm_connect_dai_pair(card, rtd, codec_dai,
+						      asoc_rtd_to_cpu(rtd, i));
+		} else {
+			dev_err(card->dev,
+				"N cpus to M codecs link is not supported yet\n");
+		}
 	}
 }
 
 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
 	int event)
 {
+	struct snd_soc_dai *dai;
 	int i;
 
-	soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
-	for (i = 0; i < rtd->num_codecs; i++)
-		soc_dapm_dai_stream_event(rtd->codec_dais[i], stream, event);
+	for_each_rtd_dais(rtd, i, dai)
+		soc_dapm_dai_stream_event(dai, stream, event);
 
 	dapm_power_widgets(rtd->card, event);
 }
@@ -4310,6 +4493,29 @@
 	soc_dapm_stream_event(rtd, stream, event);
 	mutex_unlock(&card->dapm_mutex);
 }
+
+void snd_soc_dapm_stream_stop(struct snd_soc_pcm_runtime *rtd, int stream)
+{
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
+			/* powered down playback stream now */
+			snd_soc_dapm_stream_event(rtd,
+						  SNDRV_PCM_STREAM_PLAYBACK,
+						  SND_SOC_DAPM_STREAM_STOP);
+		} else {
+			/* start delayed pop wq here for playback streams */
+			rtd->pop_wait = 1;
+			queue_delayed_work(system_power_efficient_wq,
+					   &rtd->delayed_work,
+					   msecs_to_jiffies(rtd->pmdown_time));
+		}
+	} else {
+		/* capture streams can be powered down now */
+		snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
+					  SND_SOC_DAPM_STREAM_STOP);
+	}
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_stop);
 
 /**
  * snd_soc_dapm_enable_pin_unlocked - enable pin.
@@ -4581,6 +4787,28 @@
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
 
+void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm,
+		       struct snd_soc_card *card,
+		       struct snd_soc_component *component)
+{
+	dapm->card		= card;
+	dapm->component		= component;
+	dapm->bias_level	= SND_SOC_BIAS_OFF;
+
+	if (component) {
+		dapm->dev		= component->dev;
+		dapm->idle_bias_off	= !component->driver->idle_bias_on,
+		dapm->suspend_bias_off	= component->driver->suspend_bias_off;
+	} else {
+		dapm->dev		= card->dev;
+	}
+
+	INIT_LIST_HEAD(&dapm->list);
+	/* see for_each_card_dapms */
+	list_add(&dapm->list, &card->dapm_list);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_init);
+
 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
 {
 	struct snd_soc_card *card = dapm->card;
@@ -4590,7 +4818,7 @@
 
 	mutex_lock(&card->dapm_mutex);
 
-	list_for_each_entry(w, &dapm->card->widgets, list) {
+	for_each_card_widgets(dapm->card, w) {
 		if (w->dapm != dapm)
 			continue;
 		if (w->power) {
@@ -4623,7 +4851,7 @@
 {
 	struct snd_soc_dapm_context *dapm;
 
-	list_for_each_entry(dapm, &card->dapm_list, list) {
+	for_each_card_dapms(card, dapm) {
 		if (dapm != &card->dapm) {
 			soc_dapm_shutdown_dapm(dapm);
 			if (dapm->bias_level == SND_SOC_BIAS_STANDBY)

--
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