asoc: mixer control queue handling in sink stream

Mixer control queue handling is required only for
playback. Move mixer control queue handling to be
part of the playback stream in DSP transcode loopback
driver.

Change-Id: Ia8067237f80d509f969cf454f5afa08aaa6b0e52
Signed-off-by: Siddartha Shaik <[email protected]>
Signed-off-by: Surendar Karka <[email protected]>

asoc/msm-transcode-loopback-q6-v2.c

@@ -99,7 +99,7 @@ static void loopback_event_handler(uint32_t opcode,
 		return;
 	}
 
-	cstream = trans->source.cstream;
+	cstream = trans->sink.cstream;
 	ac = trans->audio_client;
 
 	/*
@@ -222,6 +222,7 @@ static int msm_transcode_loopback_open(struct snd_compr_stream *cstream)
 			ret = -EINVAL;
 			goto exit;
 		}
+		msm_adsp_init_mixer_ctl_pp_event_queue(rtd);
 	}
 
 	pr_debug("%s: num stream%d, stream name %s\n", __func__,
@@ -236,8 +237,7 @@ static int msm_transcode_loopback_open(struct snd_compr_stream *cstream)
 	}
 
 	runtime->private_data = trans;
-	if (trans->num_streams == 1)
-		msm_adsp_init_mixer_ctl_pp_event_queue(rtd);
+
 exit:
 	mutex_unlock(&trans->lock);
 	return ret;
@@ -282,14 +282,14 @@ static int msm_transcode_loopback_free(struct snd_compr_stream *cstream)
 	trans->num_streams--;
 	stop_transcoding(trans);
 
-	if (cstream->direction == SND_COMPRESS_PLAYBACK)
+	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
 		memset(&trans->sink, 0, sizeof(struct loopback_stream));
-	else if (cstream->direction == SND_COMPRESS_CAPTURE)
+		msm_adsp_clean_mixer_ctl_pp_event_queue(rtd);
+	} else if (cstream->direction == SND_COMPRESS_CAPTURE) {
 		memset(&trans->source, 0, sizeof(struct loopback_stream));
+	}
 
 	trans->session_state = LOOPBACK_SESSION_CLOSE;
-	if (trans->num_streams == 1)
-		msm_adsp_clean_mixer_ctl_pp_event_queue(rtd);
 	mutex_unlock(&trans->lock);
 	return ret;
 }