+/*
+ * dapm_update_widget_flags() - Re-compute widget sink and source flags
+ * @w: The widget for which to update the flags
+ *
+ * Some widgets have a dynamic category which depends on which neighbors they
+ * are connected to. This function update the category for these widgets.
+ *
+ * This function must be called whenever a path is added or removed to a widget.
+ */
+static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
+{
+ struct snd_soc_dapm_path *p;
+
+ switch (w->id) {
+ case snd_soc_dapm_input:
+ w->is_source = 1;
+ list_for_each_entry(p, &w->sources, list_sink) {
+ if (p->source->id == snd_soc_dapm_micbias ||
+ p->source->id == snd_soc_dapm_mic ||
+ p->source->id == snd_soc_dapm_line ||
+ p->source->id == snd_soc_dapm_output) {
+ w->is_source = 0;
+ break;
+ }
+ }
+ break;
+ case snd_soc_dapm_output:
+ w->is_sink = 1;
+ list_for_each_entry(p, &w->sinks, list_source) {
+ if (p->sink->id == snd_soc_dapm_spk ||
+ p->sink->id == snd_soc_dapm_hp ||
+ p->sink->id == snd_soc_dapm_line ||
+ p->sink->id == snd_soc_dapm_input) {
+ w->is_sink = 0;
+ break;
+ }
+ }
+ break;
+ case snd_soc_dapm_line:
+ w->is_sink = !list_empty(&w->sources);
+ w->is_source = !list_empty(&w->sinks);
+ break;
+ default:
+ break;
+ }
+}
+