ASoC: SOF: ipc4: add D0I3 stream compatibility support for S0ix

Enable ipc4 D0I3 stream compatibility support for S0ix by removing
d0i3_supported_in_s0ix, the feature gating flag in struct
sof_ipc_pcm_ops.  Since both ipc3 an ipc4 now support the feature,
there is no need for the flag anymore.

After this change the suspend_ignored logic in pcm.c applies also to
IPC4 streams, allowing the DSP to remain in D0i3 during S0ix when
D0I3-compatible streams are active (e.g. wake-on-voice keyword
detection).

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

Author: Jyri Sarha

sound/soc/sof/ipc3-pcm.c

@@ -431,7 +431,6 @@ const struct sof_ipc_pcm_ops ipc3_pcm_ops = {
 	.trigger = sof_ipc3_pcm_trigger,
 	.dai_link_fixup = sof_ipc3_pcm_dai_link_fixup,
 	.reset_hw_params_during_stop = true,
-	.d0i3_supported_in_s0ix = true,
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS)
 	.compress_ops =	&sof_ipc3_compressed_ops,
 #endif

sound/soc/sof/pcm.c

@@ -430,11 +430,10 @@ static int sof_pcm_trigger(struct snd_soc_component *component,
 		break;
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 		/*
-		 * If DSP D0I3 is allowed during S0iX, set the suspend_ignored flag for
-		 * D0I3-compatible streams to keep the firmware pipeline running
+		 * Set the suspend_ignored flag for D0I3-compatible
+		 * streams to keep the firmware pipeline running
 		 */
-		if (pcm_ops && pcm_ops->d0i3_supported_in_s0ix &&
-		    sdev->system_suspend_target == SOF_SUSPEND_S0IX &&
+		if (sdev->system_suspend_target == SOF_SUSPEND_S0IX &&
 		    spcm->stream[substream->stream].d0i3_compatible) {
 			spcm->stream[substream->stream].suspend_ignored = true;
 			return 0;

sound/soc/sof/sof-audio.h

@@ -121,7 +121,6 @@ struct snd_sof_dai_config_data {
  *				  triggers. The FW keeps the host DMA running in this case and
  *				  therefore the host must do the same and should stop the DMA during
  *				  hw_free.
- * @d0i3_supported_in_s0ix: Allow DSP D0I3 during S0iX
  * @compress_ops: Pointer to ops for compressed streams
  */
 struct sof_ipc_pcm_ops {
@@ -143,7 +142,6 @@ struct sof_ipc_pcm_ops {
 	bool reset_hw_params_during_stop;
 	bool ipc_first_on_start;
 	bool platform_stop_during_hw_free;
-	bool d0i3_supported_in_s0ix;
 	const struct snd_compress_ops *compress_ops;
 };