Add a state variable to keep track of delayed stops, in case
pcm_ops->platform_stop_during_hw_free is set.
This patch should be iso-functionality, possibly removing no-op
cases. The main purpose of this new state variable is to prepare a
follow-up patch to reset all PCM and DMAs in case of stop/prepare xrun
sequences.
Reviewed-by: Rander Wang <rander.wang@xxxxxxxxx>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
sound/soc/sof/pcm.c | 11 +++++++++++
sound/soc/sof/sof-audio.c | 1 +
sound/soc/sof/sof-audio.h | 1 +
3 files changed, 13 insertions(+)
diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c
index ed09756f6af6..fbd7e045bcfb 100644
--- a/sound/soc/sof/pcm.c
+++ b/sound/soc/sof/pcm.c
@@ -276,6 +276,8 @@ static int sof_pcm_trigger(struct snd_soc_component *component,
dev_dbg(component->dev, "pcm: trigger stream %d dir %d cmd %d\n",
spcm->pcm.pcm_id, substream->stream, cmd);
+ spcm->pending_stop[substream->stream] = false;
+
switch (cmd) {
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
ipc_first = true;
@@ -345,6 +347,15 @@ static int sof_pcm_trigger(struct snd_soc_component *component,
/* invoke platform trigger to stop DMA even if pcm_ops isn't set or if it failed */
if (!pcm_ops || !pcm_ops->platform_stop_during_hw_free)
snd_sof_pcm_platform_trigger(sdev, substream, cmd);
+
+ /*
+ * set the pending_stop flag to indicate that pipeline stop has been delayed.
+ * This will be used later to stop the pipelines during prepare when recovering
+ * from xruns.
+ */
+ if (pcm_ops && pcm_ops->platform_stop_during_hw_free &&
+ cmd == SNDRV_PCM_TRIGGER_STOP)
+ spcm->pending_stop[substream->stream] = true;
break;
default:
break;
diff --git a/sound/soc/sof/sof-audio.c b/sound/soc/sof/sof-audio.c
index b5ca2861edbd..32fef64ef10d 100644
--- a/sound/soc/sof/sof-audio.c
+++ b/sound/soc/sof/sof-audio.c
@@ -852,6 +852,7 @@ int sof_pcm_stream_free(struct snd_sof_dev *sdev, struct snd_pcm_substream *subs
}
spcm->prepared[substream->stream] = false;
+ spcm->pending_stop[substream->stream] = false;
}
/* reset the DMA */
diff --git a/sound/soc/sof/sof-audio.h b/sound/soc/sof/sof-audio.h
index 7c08f915b35b..f4134257789e 100644
--- a/sound/soc/sof/sof-audio.h
+++ b/sound/soc/sof/sof-audio.h
@@ -349,6 +349,7 @@ struct snd_sof_pcm {
struct list_head list; /* list in sdev pcm list */
struct snd_pcm_hw_params params[2];
bool prepared[2]; /* PCM_PARAMS set successfully */
+ bool pending_stop[2]; /* only used if (!pcm_ops->platform_stop_during_hw_free) */
};
struct snd_sof_led_control {
--
2.40.1
