ASoC: SOF: IPC4: query fw_context_save feature from fw

Driver queries fw_context_save feature when fw is ready and can skip
library reload with this feature since library is saved in persistent
memory. The default value of fw_context_save is true unless fw reports
false.

Signed-off-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://msgid.link/r/20231215083102.3064200-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: RanderWang

sound/soc/sof/intel/lnl.c

@@ -133,6 +133,8 @@ int sof_lnl_ops_init(struct snd_sof_dev *sdev)
 
 	ipc4_data->mtrace_type = SOF_IPC4_MTRACE_INTEL_CAVS_2;
 
+	ipc4_data->fw_context_save = true;
+
 	/* External library loading support */
 	ipc4_data->load_library = hda_dsp_ipc4_load_library;
 

sound/soc/sof/intel/mtl.c

@@ -718,6 +718,8 @@ int sof_mtl_ops_init(struct snd_sof_dev *sdev)
 
 	ipc4_data->mtrace_type = SOF_IPC4_MTRACE_INTEL_CAVS_2;
 
+	ipc4_data->fw_context_save = true;
+
 	/* External library loading support */
 	ipc4_data->load_library = hda_dsp_ipc4_load_library;
 

sound/soc/sof/intel/tgl.c

@@ -91,6 +91,8 @@ int sof_tgl_ops_init(struct snd_sof_dev *sdev)
 
 		ipc4_data->mtrace_type = SOF_IPC4_MTRACE_INTEL_CAVS_2;
 
+		ipc4_data->fw_context_save = true;
+
 		/* External library loading support */
 		ipc4_data->load_library = hda_dsp_ipc4_load_library;
 

sound/soc/sof/ipc4-loader.c

@@ -391,6 +391,9 @@ int sof_ipc4_query_fw_configuration(struct snd_sof_dev *sdev)
 				goto out;
 			}
 			break;
+		case SOF_IPC4_FW_CONTEXT_SAVE:
+			ipc4_data->fw_context_save = *tuple->value;
+			break;
 		default:
 			break;
 		}

sound/soc/sof/ipc4-priv.h

@@ -81,6 +81,7 @@ struct sof_ipc4_fw_data {
 	u32 mtrace_log_bytes;
 	int max_num_pipelines;
 	u32 max_libs_count;
+	bool fw_context_save;
 
 	int (*load_library)(struct snd_sof_dev *sdev,
 			    struct sof_ipc4_fw_library *fw_lib, bool reload);