ASoC: SOF: misc fixes

Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:

We somehow missed the default path for DSP libraries for LNL, and need
to restrict support for D0i3 w/ IPC4. Also add debugfs support for
firmware profile information so that sof-test scripts can show what is
being tested.

sound/soc/sof/debug.c

@@ -330,14 +330,32 @@ EXPORT_SYMBOL_GPL(snd_sof_dbg_memory_info_init);
 
 int snd_sof_dbg_init(struct snd_sof_dev *sdev)
 {
+	struct snd_sof_pdata *plat_data = sdev->pdata;
 	struct snd_sof_dsp_ops *ops = sof_ops(sdev);
 	const struct snd_sof_debugfs_map *map;
+	struct dentry *fw_profile;
 	int i;
 	int err;
 
 	/* use "sof" as top level debugFS dir */
 	sdev->debugfs_root = debugfs_create_dir("sof", NULL);
 
+	/* expose firmware/topology prefix/names for test purposes */
+	fw_profile = debugfs_create_dir("fw_profile", sdev->debugfs_root);
+
+	debugfs_create_str("fw_path", 0444, fw_profile,
+			   (char **)&plat_data->fw_filename_prefix);
+	debugfs_create_str("fw_lib_path", 0444, fw_profile,
+			   (char **)&plat_data->fw_lib_prefix);
+	debugfs_create_str("tplg_path", 0444, fw_profile,
+			   (char **)&plat_data->tplg_filename_prefix);
+	debugfs_create_str("fw_name", 0444, fw_profile,
+			   (char **)&plat_data->fw_filename);
+	debugfs_create_str("tplg_name", 0444, fw_profile,
+			   (char **)&plat_data->tplg_filename);
+	debugfs_create_u32("ipc_type", 0444, fw_profile,
+			   (u32 *)&plat_data->ipc_type);
+
 	/* init dfsentry list */
 	INIT_LIST_HEAD(&sdev->dfsentry_list);
 

sound/soc/sof/intel/pci-lnl.c

@@ -35,6 +35,9 @@ static const struct sof_dev_desc lnl_desc = {
 	.default_fw_path = {
 		[SOF_IPC_TYPE_4] = "intel/sof-ipc4/lnl",
 	},
+	.default_lib_path = {
+		[SOF_IPC_TYPE_4] = "intel/sof-ipc4-lib/lnl",
+	},
 	.default_tplg_path = {
 		[SOF_IPC_TYPE_4] = "intel/sof-ipc4-tplg",
 	},

sound/soc/sof/ipc3-pcm.c

@@ -434,4 +434,5 @@ 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,
 };

sound/soc/sof/pcm.c

@@ -325,14 +325,13 @@ static int sof_pcm_trigger(struct snd_soc_component *component,
 			ipc_first = true;
 		break;
 	case SNDRV_PCM_TRIGGER_SUSPEND:
-		if (sdev->system_suspend_target == SOF_SUSPEND_S0IX &&
+		/*
+		 * If DSP D0I3 is allowed during S0iX, 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 &&
 		    spcm->stream[substream->stream].d0i3_compatible) {
-			/*
-			 * trap the event, not sending trigger stop to
-			 * prevent the FW pipelines from being stopped,
-			 * and mark the flag to ignore the upcoming DAPM
-			 * PM events.
-			 */
 			spcm->stream[substream->stream].suspend_ignored = true;
 			return 0;
 		}

sound/soc/sof/sof-audio.h

@@ -116,6 +116,7 @@ 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
  */
 struct sof_ipc_pcm_ops {
 	int (*hw_params)(struct snd_soc_component *component, struct snd_pcm_substream *substream,
@@ -135,6 +136,7 @@ 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;
 };
 
 /**