ASoC: dapm: Ensure bypass paths are suspended and resumed

Since bypass paths aren't part of DAPM streams and we may not have any
DAPM streams there may not be anything that triggers a DAPM sync for
them. Mark all input and output widgets as dirty and then sync to do so
at the end of suspend and resume.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index dd7c49f..f7999e9 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -141,6 +141,28 @@
 }
 EXPORT_SYMBOL_GPL(dapm_mark_dirty);
 
+void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
+{
+	struct snd_soc_card *card = dapm->card;
+	struct snd_soc_dapm_widget *w;
+
+	mutex_lock(&card->dapm_mutex);
+
+	list_for_each_entry(w, &card->widgets, list) {
+		switch (w->id) {
+		case snd_soc_dapm_input:
+		case snd_soc_dapm_output:
+			dapm_mark_dirty(w, "Rechecking inputs and outputs");
+			break;
+		default:
+			break;
+		}
+	}
+
+	mutex_unlock(&card->dapm_mutex);
+}
+EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
+
 /* create a new dapm widget */
 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
 	const struct snd_soc_dapm_widget *_widget)