ASoC: Intel: Pass stream start position to sst_byt_stream_start()

Stream start position will be needed in resume code. Prepare for it by
adding start offset argument to sst_byt_stream_start().
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/intel/sst-baytrail-ipc.c

@@ -663,7 +663,8 @@ static int sst_byt_stream_operations(struct sst_byt *byt, int type,
 }
 
 /* stream ALSA trigger operations */
-int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream)
+int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream,
+			 u32 start_offset)
 {
 	struct sst_byt_start_stream_params start_stream;
 	void *tx_msg;
@@ -671,7 +672,7 @@ int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream)
 	u64 header;
 	int ret;
 
-	start_stream.byte_offset = 0;
+	start_stream.byte_offset = start_offset;
 	header = sst_byt_header(IPC_IA_START_STREAM,
 				sizeof(start_stream) + sizeof(u32),
 				true, stream->str_id);

sound/soc/intel/sst-baytrail-ipc.h

@@ -53,7 +53,8 @@ int sst_byt_stream_commit(struct sst_byt *byt, struct sst_byt_stream *stream);
 int sst_byt_stream_free(struct sst_byt *byt, struct sst_byt_stream *stream);
 
 /* stream ALSA trigger operations */
-int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream);
+int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream,
+			 u32 start_offset);
 int sst_byt_stream_stop(struct sst_byt *byt, struct sst_byt_stream *stream);
 int sst_byt_stream_pause(struct sst_byt *byt, struct sst_byt_stream *stream);
 int sst_byt_stream_resume(struct sst_byt *byt, struct sst_byt_stream *stream);

sound/soc/intel/sst-baytrail-pcm.c

@@ -145,7 +145,7 @@ static int sst_byt_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
-		sst_byt_stream_start(byt, pcm_data->stream);
+		sst_byt_stream_start(byt, pcm_data->stream, 0);
 		break;
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: