1 files changed, 264 insertions, 83 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 21c69074aa1..b9129efeedf 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -52,19 +52,37 @@
 
 /* dapm power sequences - make this per codec in the future */
 static int dapm_up_seq[] = {
-	snd_soc_dapm_pre, snd_soc_dapm_supply, snd_soc_dapm_micbias,
-	snd_soc_dapm_mic, snd_soc_dapm_mux, snd_soc_dapm_value_mux,
-	snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_mixer_named_ctl,
-	snd_soc_dapm_pga, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk,
-	snd_soc_dapm_post
+	[snd_soc_dapm_pre] = 0,
+	[snd_soc_dapm_supply] = 1,
+	[snd_soc_dapm_micbias] = 2,
+	[snd_soc_dapm_mic] = 3,
+	[snd_soc_dapm_mux] = 4,
+	[snd_soc_dapm_value_mux] = 4,
+	[snd_soc_dapm_dac] = 5,
+	[snd_soc_dapm_mixer] = 6,
+	[snd_soc_dapm_mixer_named_ctl] = 6,
+	[snd_soc_dapm_pga] = 7,
+	[snd_soc_dapm_adc] = 8,
+	[snd_soc_dapm_hp] = 9,
+	[snd_soc_dapm_spk] = 10,
+	[snd_soc_dapm_post] = 11,
 };
 
 static int dapm_down_seq[] = {
-	snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk,
-	snd_soc_dapm_pga, snd_soc_dapm_mixer_named_ctl, snd_soc_dapm_mixer,
-	snd_soc_dapm_dac, snd_soc_dapm_mic, snd_soc_dapm_micbias,
-	snd_soc_dapm_mux, snd_soc_dapm_value_mux, snd_soc_dapm_supply,
-	snd_soc_dapm_post
+	[snd_soc_dapm_pre] = 0,
+	[snd_soc_dapm_adc] = 1,
+	[snd_soc_dapm_hp] = 2,
+	[snd_soc_dapm_spk] = 3,
+	[snd_soc_dapm_pga] = 4,
+	[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_micbias] = 8,
+	[snd_soc_dapm_mux] = 9,
+	[snd_soc_dapm_value_mux] = 9,
+	[snd_soc_dapm_supply] = 10,
+	[snd_soc_dapm_post] = 11,
 };
 
 static void pop_wait(u32 pop_time)
@@ -268,7 +286,7 @@ static int dapm_connect_mixer(struct snd_soc_codec *codec,
 static int dapm_update_bits(struct snd_soc_dapm_widget *widget)
 {
 	int change, power;
-	unsigned short old, new;
+	unsigned int old, new;
 	struct snd_soc_codec *codec = widget->codec;
 
 	/* check for valid widgets */
@@ -689,53 +707,211 @@ static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
 	return power;
 }
 
-/*
- * Scan a single DAPM widget for a complete audio path and update the
- * power status appropriately.
- */
-static int dapm_power_widget(struct snd_soc_codec *codec, int event,
-			     struct snd_soc_dapm_widget *w)
+static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
+			    struct snd_soc_dapm_widget *b,
+			    int sort[])
 {
-	int ret;
+	if (sort[a->id] != sort[b->id])
+		return sort[a->id] - sort[b->id];
+	if (a->reg != b->reg)
+		return a->reg - b->reg;
 
-	switch (w->id) {
-	case snd_soc_dapm_pre:
-		if (!w->event)
-			return 0;
+	return 0;
+}
 
-		if (event == SND_SOC_DAPM_STREAM_START) {
-			ret = w->event(w,
-				       NULL, SND_SOC_DAPM_PRE_PMU);
+/* Insert a widget in order into a DAPM power sequence. */
+static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
+			    struct list_head *list,
+			    int sort[])
+{
+	struct snd_soc_dapm_widget *w;
+
+	list_for_each_entry(w, list, power_list)
+		if (dapm_seq_compare(new_widget, w, sort) < 0) {
+			list_add_tail(&new_widget->power_list, &w->power_list);
+			return;
+		}
+
+	list_add_tail(&new_widget->power_list, list);
+}
+
+/* Apply the coalesced changes from a DAPM sequence */
+static void dapm_seq_run_coalesced(struct snd_soc_codec *codec,
+				   struct list_head *pending)
+{
+	struct snd_soc_dapm_widget *w;
+	int reg, power, ret;
+	unsigned int value = 0;
+	unsigned int mask = 0;
+	unsigned int cur_mask;
+
+	reg = list_first_entry(pending, struct snd_soc_dapm_widget,
+			       power_list)->reg;
+
+	list_for_each_entry(w, pending, power_list) {
+		cur_mask = 1 << w->shift;
+		BUG_ON(reg != w->reg);
+
+		if (w->invert)
+			power = !w->power;
+		else
+			power = w->power;
+
+		mask |= cur_mask;
+		if (power)
+			value |= cur_mask;
+
+		pop_dbg(codec->pop_time,
+			"pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
+			w->name, reg, value, mask);
+
+		/* power up pre event */
+		if (w->power && w->event &&
+		    (w->event_flags & SND_SOC_DAPM_PRE_PMU)) {
+			pop_dbg(codec->pop_time, "pop test : %s PRE_PMU\n",
+				w->name);
+			ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU);
 			if (ret < 0)
-				return ret;
-		} else if (event == SND_SOC_DAPM_STREAM_STOP) {
-			ret = w->event(w,
-				       NULL, SND_SOC_DAPM_PRE_PMD);
+				pr_err("%s: pre event failed: %d\n",
+				       w->name, ret);
+		}
+
+		/* power down pre event */
+		if (!w->power && w->event &&
+		    (w->event_flags & SND_SOC_DAPM_PRE_PMD)) {
+			pop_dbg(codec->pop_time, "pop test : %s PRE_PMD\n",
+				w->name);
+			ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD);
 			if (ret < 0)
-				return ret;
+				pr_err("%s: pre event failed: %d\n",
+				       w->name, ret);
 		}
-		return 0;
 
-	case snd_soc_dapm_post:
-		if (!w->event)
-			return 0;
+		/* Lower PGA volume to reduce pops */
+		if (w->id == snd_soc_dapm_pga && !w->power)
+			dapm_set_pga(w, w->power);
+	}
 
-		if (event == SND_SOC_DAPM_STREAM_START) {
+	if (reg >= 0) {
+		pop_dbg(codec->pop_time,
+			"pop test : Applying 0x%x/0x%x to %x in %dms\n",
+			value, mask, reg, codec->pop_time);
+		pop_wait(codec->pop_time);
+		snd_soc_update_bits(codec, reg, mask, value);
+	}
+
+	list_for_each_entry(w, pending, power_list) {
+		/* Raise PGA volume to reduce pops */
+		if (w->id == snd_soc_dapm_pga && w->power)
+			dapm_set_pga(w, w->power);
+
+		/* power up post event */
+		if (w->power && w->event &&
+		    (w->event_flags & SND_SOC_DAPM_POST_PMU)) {
+			pop_dbg(codec->pop_time, "pop test : %s POST_PMU\n",
+				w->name);
 			ret = w->event(w,
 				       NULL, SND_SOC_DAPM_POST_PMU);
 			if (ret < 0)
-				return ret;
-		} else if (event == SND_SOC_DAPM_STREAM_STOP) {
-			ret = w->event(w,
-				       NULL, SND_SOC_DAPM_POST_PMD);
+				pr_err("%s: post event failed: %d\n",
+				       w->name, ret);
+		}
+
+		/* power down post event */
+		if (!w->power && w->event &&
+		    (w->event_flags & SND_SOC_DAPM_POST_PMD)) {
+			pop_dbg(codec->pop_time, "pop test : %s POST_PMD\n",
+				w->name);
+			ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD);
 			if (ret < 0)
-				return ret;
+				pr_err("%s: post event failed: %d\n",
+				       w->name, ret);
 		}
-		return 0;
+	}
+}
 
-	default:
-		return dapm_generic_apply_power(w);
+/* Apply a DAPM power sequence.
+ *
+ * We walk over a pre-sorted list of widgets to apply power to.  In
+ * order to minimise the number of writes to the device required
+ * multiple widgets will be updated in a single write where possible.
+ * Currently anything that requires more than a single write is not
+ * handled.
+ */
+static void dapm_seq_run(struct snd_soc_codec *codec, struct list_head *list,
+			 int event, int sort[])
+{
+	struct snd_soc_dapm_widget *w, *n;
+	LIST_HEAD(pending);
+	int cur_sort = -1;
+	int cur_reg = SND_SOC_NOPM;
+	int ret;
+
+	list_for_each_entry_safe(w, n, list, power_list) {
+		ret = 0;
+
+		/* Do we need to apply any queued changes? */
+		if (sort[w->id] != cur_sort || w->reg != cur_reg) {
+			if (!list_empty(&pending))
+				dapm_seq_run_coalesced(codec, &pending);
+
+			INIT_LIST_HEAD(&pending);
+			cur_sort = -1;
+			cur_reg = SND_SOC_NOPM;
+		}
+
+		switch (w->id) {
+		case snd_soc_dapm_pre:
+			if (!w->event)
+				list_for_each_entry_safe_continue(w, n, list,
+								  power_list);
+
+			if (event == SND_SOC_DAPM_STREAM_START)
+				ret = w->event(w,
+					       NULL, SND_SOC_DAPM_PRE_PMU);
+			else if (event == SND_SOC_DAPM_STREAM_STOP)
+				ret = w->event(w,
+					       NULL, SND_SOC_DAPM_PRE_PMD);
+			break;
+
+		case snd_soc_dapm_post:
+			if (!w->event)
+				list_for_each_entry_safe_continue(w, n, list,
+								  power_list);
+
+			if (event == SND_SOC_DAPM_STREAM_START)
+				ret = w->event(w,
+					       NULL, SND_SOC_DAPM_POST_PMU);
+			else if (event == SND_SOC_DAPM_STREAM_STOP)
+				ret = w->event(w,
+					       NULL, SND_SOC_DAPM_POST_PMD);
+			break;
+
+		case snd_soc_dapm_input:
+		case snd_soc_dapm_output:
+		case snd_soc_dapm_hp:
+		case snd_soc_dapm_mic:
+		case snd_soc_dapm_line:
+		case snd_soc_dapm_spk:
+			/* No register support currently */
+			ret = dapm_generic_apply_power(w);
+			break;
+
+		default:
+			/* Queue it up for application */
+			cur_sort = sort[w->id];
+			cur_reg = w->reg;
+			list_move(&w->power_list, &pending);
+			break;
+		}
+
+		if (ret < 0)
+			pr_err("Failed to apply widget power: %d\n",
+			       ret);
 	}
+
+	if (!list_empty(&pending))
+		dapm_seq_run_coalesced(codec, &pending);
 }
 
 /*
@@ -751,23 +927,22 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event)
 {
 	struct snd_soc_device *socdev = codec->socdev;
 	struct snd_soc_dapm_widget *w;
+	LIST_HEAD(up_list);
+	LIST_HEAD(down_list);
 	int ret = 0;
-	int i, power;
+	int power;
 	int sys_power = 0;
 
-	INIT_LIST_HEAD(&codec->up_list);
-	INIT_LIST_HEAD(&codec->down_list);
-
 	/* Check which widgets we need to power and store them in
 	 * lists indicating if they should be powered up or down.
 	 */
 	list_for_each_entry(w, &codec->dapm_widgets, list) {
 		switch (w->id) {
 		case snd_soc_dapm_pre:
-			list_add_tail(&codec->down_list, &w->power_list);
+			dapm_seq_insert(w, &down_list, dapm_down_seq);
 			break;
 		case snd_soc_dapm_post:
-			list_add_tail(&codec->up_list, &w->power_list);
+			dapm_seq_insert(w, &up_list, dapm_up_seq);
 			break;
 
 		default:
@@ -782,10 +957,9 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event)
 				continue;
 
 			if (power)
-				list_add_tail(&w->power_list, &codec->up_list);
+				dapm_seq_insert(w, &up_list, dapm_up_seq);
 			else
-				list_add_tail(&w->power_list,
-					      &codec->down_list);
+				dapm_seq_insert(w, &down_list, dapm_down_seq);
 
 			w->power = power;
 			break;
@@ -802,32 +976,10 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event)
 	}
 
 	/* Power down widgets first; try to avoid amplifying pops. */
-	for (i = 0; i < ARRAY_SIZE(dapm_down_seq); i++) {
-		list_for_each_entry(w, &codec->down_list, power_list) {
-			/* is widget in stream order */
-			if (w->id != dapm_down_seq[i])
-				continue;
-
-			ret = dapm_power_widget(codec, event, w);
-			if (ret != 0)
-				pr_err("Failed to power down %s: %d\n",
-				       w->name, ret);
-		}
-	}
+	dapm_seq_run(codec, &down_list, event, dapm_down_seq);
 
 	/* Now power up. */
-	for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) {
-		list_for_each_entry(w, &codec->up_list, power_list) {
-			/* is widget in stream order */
-			if (w->id != dapm_up_seq[i])
-				continue;
-
-			ret = dapm_power_widget(codec, event, w);
-			if (ret != 0)
-				pr_err("Failed to power up %s: %d\n",
-				       w->name, ret);
-		}
-	}
+	dapm_seq_run(codec, &up_list, event, dapm_up_seq);
 
 	/* If we just powered the last thing off drop to standby bias */
 	if (codec->bias_level == SND_SOC_BIAS_PREPARE && !sys_power) {
@@ -1372,7 +1524,7 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
 	int max = mc->max;
 	unsigned int mask = (1 << fls(max)) - 1;
 	unsigned int invert = mc->invert;
-	unsigned short val, val2, val_mask;
+	unsigned int val, val2, val_mask;
 	int ret;
 
 	val = (ucontrol->value.integer.value[0] & mask);
@@ -1436,7 +1588,7 @@ int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned short val, bitmask;
+	unsigned int val, bitmask;
 
 	for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
 		;
@@ -1464,8 +1616,8 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned short val, mux;
-	unsigned short mask, bitmask;
+	unsigned int val, mux;
+	unsigned int mask, bitmask;
 	int ret = 0;
 
 	for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
@@ -1523,7 +1675,7 @@ int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned short reg_val, val, mux;
+	unsigned int reg_val, val, mux;
 
 	reg_val = snd_soc_read(widget->codec, e->reg);
 	val = (reg_val >> e->shift_l) & e->mask;
@@ -1563,8 +1715,8 @@ int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-	unsigned short val, mux;
-	unsigned short mask;
+	unsigned int val, mux;
+	unsigned int mask;
 	int ret = 0;
 
 	if (ucontrol->value.enumerated.item[0] > e->max - 1)
@@ -1880,6 +2032,35 @@ void snd_soc_dapm_free(struct snd_soc_device *socdev)
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
 
+/*
+ * snd_soc_dapm_shutdown - callback for system shutdown
+ */
+void snd_soc_dapm_shutdown(struct snd_soc_device *socdev)
+{
+	struct snd_soc_codec *codec = socdev->card->codec;
+	struct snd_soc_dapm_widget *w;
+	LIST_HEAD(down_list);
+	int powerdown = 0;
+
+	list_for_each_entry(w, &codec->dapm_widgets, list) {
+		if (w->power) {
+			dapm_seq_insert(w, &down_list, dapm_down_seq);
+			powerdown = 1;
+		}
+	}
+
+	/* If there were no widgets to power down we're already in
+	 * standby.
+	 */
+	if (powerdown) {
+		snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_PREPARE);
+		dapm_seq_run(codec, &down_list, 0, dapm_down_seq);
+		snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_STANDBY);
+	}
+
+	snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_OFF);
+}
+
 /* Module information */
 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");