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/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 0a15537..07e2510 100644 (file)
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -412,6 +412,7 @@ void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec);
 
 /* Mostly internal - should not normally be used */
 void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason);
+void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm);
 
 /* dapm path query */
 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index b95d1fb..ad65459 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -609,6 +609,10 @@ int snd_soc_suspend(struct device *dev)
                                          SND_SOC_DAPM_STREAM_SUSPEND);
        }
 
+       /* Recheck all analogue paths too */
+       dapm_mark_io_dirty(&card->dapm);
+       snd_soc_dapm_sync(&card->dapm);
+
        /* suspend all CODECs */
        list_for_each_entry(codec, &card->codec_dev_list, card_list) {
                /* If there are paths active then the CODEC will be held with
@@ -756,6 +760,10 @@ static void soc_resume_deferred(struct work_struct *work)
 
        /* userspace can access us now we are back as we were before */
        snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
+
+       /* Recheck all analogue paths too */
+       dapm_mark_io_dirty(&card->dapm);
+       snd_soc_dapm_sync(&card->dapm);
 }
 
 /* powers up audio subsystem after a suspend */

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index dd7c49f..f7999e9 100644 (file)
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -141,6 +141,28 @@ void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
 }
 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)