ASoC: dapm: Treat DAI widgets like AIF widgets for power

Even though they are virtual widgets DAI widgets still get counted for the
DAPM context power management so we can't just use the active state to
check if they should be powered as they may not be part of a complete path.

Instead split them into input and output widgets and do the same power
checks as we perform on AIFs.

Reported-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index a80c883..c7051c4 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -55,7 +55,8 @@
 	[snd_soc_dapm_clock_supply] = 1,
 	[snd_soc_dapm_micbias] = 2,
 	[snd_soc_dapm_dai_link] = 2,
-	[snd_soc_dapm_dai] = 3,
+	[snd_soc_dapm_dai_in] = 3,
+	[snd_soc_dapm_dai_out] = 3,
 	[snd_soc_dapm_aif_in] = 3,
 	[snd_soc_dapm_aif_out] = 3,
 	[snd_soc_dapm_mic] = 4,
@@ -92,7 +93,8 @@
 	[snd_soc_dapm_value_mux] = 9,
 	[snd_soc_dapm_aif_in] = 10,
 	[snd_soc_dapm_aif_out] = 10,
-	[snd_soc_dapm_dai] = 10,
+	[snd_soc_dapm_dai_in] = 10,
+	[snd_soc_dapm_dai_out] = 10,
 	[snd_soc_dapm_dai_link] = 11,
 	[snd_soc_dapm_clock_supply] = 12,
 	[snd_soc_dapm_regulator_supply] = 12,
@@ -419,7 +421,8 @@
 	case snd_soc_dapm_clock_supply:
 	case snd_soc_dapm_aif_in:
 	case snd_soc_dapm_aif_out:
-	case snd_soc_dapm_dai:
+	case snd_soc_dapm_dai_in:
+	case snd_soc_dapm_dai_out:
 	case snd_soc_dapm_hp:
 	case snd_soc_dapm_mic:
 	case snd_soc_dapm_spk:
@@ -820,7 +823,7 @@
 	switch (widget->id) {
 	case snd_soc_dapm_adc:
 	case snd_soc_dapm_aif_out:
-	case snd_soc_dapm_dai:
+	case snd_soc_dapm_dai_out:
 		if (widget->active) {
 			widget->outputs = snd_soc_dapm_suspend_check(widget);
 			return widget->outputs;
@@ -916,7 +919,7 @@
 	switch (widget->id) {
 	case snd_soc_dapm_dac:
 	case snd_soc_dapm_aif_in:
-	case snd_soc_dapm_dai:
+	case snd_soc_dapm_dai_in:
 		if (widget->active) {
 			widget->inputs = snd_soc_dapm_suspend_check(widget);
 			return widget->inputs;
@@ -1135,16 +1138,6 @@
 	return out != 0 && in != 0;
 }
 
-static int dapm_dai_check_power(struct snd_soc_dapm_widget *w)
-{
-	DAPM_UPDATE_STAT(w, power_checks);
-
-	if (w->active)
-		return w->active;
-
-	return dapm_generic_check_power(w);
-}
-
 /* Check to see if an ADC has power */
 static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
 {
@@ -2318,7 +2311,8 @@
 	case snd_soc_dapm_clock_supply:
 	case snd_soc_dapm_aif_in:
 	case snd_soc_dapm_aif_out:
-	case snd_soc_dapm_dai:
+	case snd_soc_dapm_dai_in:
+	case snd_soc_dapm_dai_out:
 	case snd_soc_dapm_dai_link:
 		list_add(&path->list, &dapm->card->paths);
 		list_add(&path->list_sink, &wsink->sources);
@@ -3129,10 +3123,12 @@
 		break;
 	case snd_soc_dapm_adc:
 	case snd_soc_dapm_aif_out:
+	case snd_soc_dapm_dai_out:
 		w->power_check = dapm_adc_check_power;
 		break;
 	case snd_soc_dapm_dac:
 	case snd_soc_dapm_aif_in:
+	case snd_soc_dapm_dai_in:
 		w->power_check = dapm_dac_check_power;
 		break;
 	case snd_soc_dapm_pga:
@@ -3152,9 +3148,6 @@
 	case snd_soc_dapm_clock_supply:
 		w->power_check = dapm_supply_check_power;
 		break;
-	case snd_soc_dapm_dai:
-		w->power_check = dapm_dai_check_power;
-		break;
 	default:
 		w->power_check = dapm_always_on_check_power;
 		break;
@@ -3375,7 +3368,7 @@
 	template.reg = SND_SOC_NOPM;
 
 	if (dai->driver->playback.stream_name) {
-		template.id = snd_soc_dapm_dai;
+		template.id = snd_soc_dapm_dai_in;
 		template.name = dai->driver->playback.stream_name;
 		template.sname = dai->driver->playback.stream_name;
 
@@ -3393,7 +3386,7 @@
 	}
 
 	if (dai->driver->capture.stream_name) {
-		template.id = snd_soc_dapm_dai;
+		template.id = snd_soc_dapm_dai_out;
 		template.name = dai->driver->capture.stream_name;
 		template.sname = dai->driver->capture.stream_name;
 
@@ -3423,8 +3416,13 @@
 
 	/* For each DAI widget... */
 	list_for_each_entry(dai_w, &card->widgets, list) {
-		if (dai_w->id != snd_soc_dapm_dai)
+		switch (dai_w->id) {
+		case snd_soc_dapm_dai_in:
+		case snd_soc_dapm_dai_out:
+			break;
+		default:
 			continue;
+		}
 
 		dai = dai_w->priv;
 
@@ -3433,8 +3431,13 @@
 			if (w->dapm != dai_w->dapm)
 				continue;
 
-			if (w->id == snd_soc_dapm_dai)
+			switch (w->id) {
+			case snd_soc_dapm_dai_in:
+			case snd_soc_dapm_dai_out:
 				continue;
+			default:
+				break;
+			}
 
 			if (!w->sname)
 				continue;