ASoC: dapm: Convert stream events to use DAI widgets

This means we don't need to walk through every single widget in the system
for each stream event which is a bit less silly.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

sound/soc/soc-dapm.c

@@ -2946,38 +2946,29 @@ static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
 				  int event)
 {
 	struct snd_soc_dapm_widget *w;
-	const char *stream_name;
 
 	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
-		stream_name = dai->driver->playback.stream_name;
+		w = dai->playback_widget;
 	else
-		stream_name = dai->driver->capture.stream_name;
+		w = dai->capture_widget;
 
-	if (!stream_name)
+	if (!w)
 		return;
 
-	list_for_each_entry(w, &dapm->card->widgets, list)
-	{
-		if (!w->sname || w->dapm != dapm)
-			continue;
-		dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n",
-			w->name, w->sname, stream_name, event);
-		if (strstr(w->sname, stream_name)) {
-			dapm_mark_dirty(w, "stream event");
-			switch(event) {
-			case SND_SOC_DAPM_STREAM_START:
-				w->active = 1;
-				break;
-			case SND_SOC_DAPM_STREAM_STOP:
-				w->active = 0;
-				break;
-			case SND_SOC_DAPM_STREAM_SUSPEND:
-			case SND_SOC_DAPM_STREAM_RESUME:
-			case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
-			case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
-				break;
-			}
-		}
+	dapm_mark_dirty(w, "stream event");
+
+	switch (event) {
+	case SND_SOC_DAPM_STREAM_START:
+		w->active = 1;
+		break;
+	case SND_SOC_DAPM_STREAM_STOP:
+		w->active = 0;
+		break;
+	case SND_SOC_DAPM_STREAM_SUSPEND:
+	case SND_SOC_DAPM_STREAM_RESUME:
+	case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
+	case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
+		break;
 	}
 
 	dapm_power_widgets(dapm, event);