add pcm_pointer callback for mt8186 to support read
host position from DSP
Signed-off-by: Chunxu Li <chunxu.li@xxxxxxxxxxxx>
---
sound/soc/sof/mediatek/mt8186/mt8186.c | 33 ++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/sound/soc/sof/mediatek/mt8186/mt8186.c b/sound/soc/sof/mediatek/mt8186/mt8186.c
index 9ec89fc7fec0..181189e00e02 100644
--- a/sound/soc/sof/mediatek/mt8186/mt8186.c
+++ b/sound/soc/sof/mediatek/mt8186/mt8186.c
@@ -470,6 +470,38 @@ static int mt8186_pcm_hw_params(struct snd_sof_dev *sdev,
return 0;
}
+static snd_pcm_uframes_t mt8186_pcm_pointer(struct snd_sof_dev *sdev,
+ struct snd_pcm_substream *substream)
+{
+ int ret;
+ snd_pcm_uframes_t pos;
+ struct snd_sof_pcm *spcm;
+ struct sof_ipc_stream_posn posn;
+ struct snd_sof_pcm_stream *stream;
+ struct snd_soc_component *scomp = sdev->component;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+
+ spcm = snd_sof_find_spcm_dai(scomp, rtd);
+ if (!spcm) {
+ dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
+ rtd->dai_link->id);
+ return 0;
+ }
+
+ stream = &spcm->stream[substream->stream];
+ ret = snd_sof_ipc_msg_data(sdev, stream->substream, &posn, sizeof(posn));
+ if (ret < 0) {
+ dev_warn(sdev->dev, "failed to read stream position: %d\n", ret);
+ return 0;
+ }
+
+ memcpy(&stream->posn, &posn, sizeof(posn));
+ pos = spcm->stream[substream->stream].posn.host_posn;
+ pos = bytes_to_frames(substream->runtime, pos);
+
+ return pos;
+}
+
static struct snd_soc_dai_driver mt8186_dai[] = {
{
.name = "SOF_DL1",
@@ -537,6 +569,7 @@ static struct snd_sof_dsp_ops sof_mt8186_ops = {
/* stream callbacks */
.pcm_open = sof_stream_pcm_open,
.pcm_hw_params = mt8186_pcm_hw_params,
+ .pcm_pointer = mt8186_pcm_pointer,
.pcm_close = sof_stream_pcm_close,
/* firmware loading */
--
2.25.1
