From: Rander Wang <rander.wang@xxxxxxxxx>
Enable d0i3 streaming if all the active streams can
work in d0i3 state and playback is enabled.
Signed-off-by: Rander Wang <rander.wang@xxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
---
sound/soc/sof/intel/hda-dsp.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/sound/soc/sof/intel/hda-dsp.c b/sound/soc/sof/intel/hda-dsp.c
index e34fe0c9bcde..68eb06f13a1f 100644
--- a/sound/soc/sof/intel/hda-dsp.c
+++ b/sound/soc/sof/intel/hda-dsp.c
@@ -405,6 +405,34 @@ static int hda_dsp_update_d0i3c_register(struct snd_sof_dev *sdev, u8 value)
return 0;
}
+/*
+ * d0i3 streaming is enabled if all the active streams can
+ * work in d0i3 state and playback is enabled
+ */
+static bool hda_dsp_d0i3_streaming_applicable(struct snd_sof_dev *sdev)
+{
+ struct snd_pcm_substream *substream;
+ struct snd_sof_pcm *spcm;
+ bool playback_active = false;
+ int dir;
+
+ list_for_each_entry(spcm, &sdev->pcm_list, list) {
+ for_each_pcm_streams(dir) {
+ substream = spcm->stream[dir].substream;
+ if (!substream || !substream->runtime)
+ continue;
+
+ if (!spcm->stream[dir].d0i3_compatible)
+ return false;
+
+ if (dir == SNDRV_PCM_STREAM_PLAYBACK)
+ playback_active = true;
+ }
+ }
+
+ return playback_active;
+}
+
static int hda_dsp_set_D0_state(struct snd_sof_dev *sdev,
const struct sof_dsp_power_state *target_state)
{
@@ -446,6 +474,9 @@ static int hda_dsp_set_D0_state(struct snd_sof_dev *sdev,
!hda_enable_trace_D0I3_S0 ||
sdev->system_suspend_target != SOF_SUSPEND_NONE)
flags = HDA_PM_NO_DMA_TRACE;
+
+ if (hda_dsp_d0i3_streaming_applicable(sdev))
+ flags |= HDA_PM_PG_STREAMING;
} else {
/* prevent power gating in D0I0 */
flags = HDA_PM_PPG;
--
2.39.1
