From: Rander Wang rander.wang@intel.com
Enable d0i3 streaming if all the active streams can work in d0i3 state and playback is enabled.
Signed-off-by: Rander Wang rander.wang@intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Reviewed-by: Péter Ujfalusi peter.ujfalusi@linux.intel.com Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com --- 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;