diff --git a/ac101.c b/ac101.c
index 343f030..abac88a 100644
--- a/ac101.c
+++ b/ac101.c
@@ -1286,6 +1286,9 @@ int ac101_trigger(struct snd_pcm_substream *substream, int cmd,
 	default:
 		ret = -EINVAL;
 	}
+	AC101_DBG("stream=%s  cmd=%d;finished %d\n",
+		snd_pcm_stream_str(substream),
+		cmd, ret);
 	return ret;
 }
 
diff --git a/ac108.c b/ac108.c
index 29e0a94..c3e0d8b 100644
--- a/ac108.c
+++ b/ac108.c
@@ -1088,6 +1088,10 @@ static int ac108_trigger(struct snd_pcm_substream *substream, int cmd,
 __ret:
 	spin_unlock_irqrestore(&ac10x->lock, flags);
 
+	dev_dbg(dai->dev, "%s() stream=%s  cmd=%d; finished %d\n",
+		__FUNCTION__,
+		snd_pcm_stream_str(substream),
+		cmd, ret);
 	return ret;
 }
 
diff --git a/seeed-voicecard.c b/seeed-voicecard.c
index f08fbd8..353f2c8 100644
--- a/seeed-voicecard.c
+++ b/seeed-voicecard.c
@@ -240,6 +240,10 @@ static int seeed_voice_card_trigger(struct snd_pcm_substream *substream, int cmd
 		ret = -EINVAL;
 	}
 
+	dev_dbg(rtd->card->dev, "%s() stream=%s  cmd=%d play:%d, capt:%d;finished %d\n",
+		__FUNCTION__, snd_pcm_stream_str(substream), cmd,
+		dai->playback_active, dai->capture_active, ret);
+
 	return ret;
 }