X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=sound%2Fsoc%2Fsoc-dapm.c;h=5157ec110cfa0dafa94008060ee50b8f0403785c;hb=5420f30723122012c7bb868a55ff21c7d383b68e;hp=653435930ad8731ccf0a9280cf8630c170b72e8c;hpb=0e09b67e5886bf549ab14ef73de35d64ac867e2b;p=deliverable%2Flinux.git

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 653435930ad8..5157ec110cfa 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2032,6 +2032,36 @@ 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);
+			w->power = 0;
+			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");