ASoC: core: Add flag to ignore pmdown_time at pcm_close

With this flag codec drivers can indicate that it is desired
to ignore the pmdown_time for DAPM shutdown sequence when
playback stream is stopped.
The DAPM sequence will be executed without delay in this case.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

2 files changed, 12 insertions, 4 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 858291dc08f9..11cfb5953e06 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -578,6 +578,7 @@ struct snd_soc_codec {
 
         /* dapm */
         struct snd_soc_dapm_context dapm;
+        unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
 
 #ifdef CONFIG_DEBUG_FS
         struct dentry *debugfs_codec_root;
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 8eb0f0711f8c..ee15337353fa 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -319,10 +319,17 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
         cpu_dai->runtime = NULL;
 
         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-                /* start delayed pop wq here for playback streams */
-                codec_dai->pop_wait = 1;
-                schedule_delayed_work(&rtd->delayed_work,
-                        msecs_to_jiffies(rtd->pmdown_time));
+                if (unlikely(codec->ignore_pmdown_time)) {
+                        /* powered down playback stream now */
+                        snd_soc_dapm_stream_event(rtd,
+                                codec_dai->driver->playback.stream_name,
+                                SND_SOC_DAPM_STREAM_STOP);
+                } else {
+                        /* start delayed pop wq here for playback streams */
+                        codec_dai->pop_wait = 1;
+                        schedule_delayed_work(&rtd->delayed_work,
+                                msecs_to_jiffies(rtd->pmdown_time));
+                }
         } else {
                 /* capture streams can be powered down now */
                 snd_soc_dapm_stream_event(rtd,