Unverified Commit 6611b975 authored by Rander Wang's avatar Rander Wang Committed by Mark Brown
Browse files

ASoC: SOF: Intel: hda-dsp: Set streaming flag for d0i3 



Enable d0i3 streaming if all the active streams can
work in d0i3 state and playback is enabled.

Signed-off-by: default avatarRander Wang <rander.wang@intel.com>
Reviewed-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: default avatarRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: default avatarPéter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230214103345.30669-6-peter.ujfalusi@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 3e6b6ed3

sound/soc/sof/intel/hda-dsp.c

+31 −0
Original line number Diff line number Diff line
@@ -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;