ASoC: SOF: query FW config to reload library

Merge series from Bard Liao <yung-chuan.liao@linux.intel.com>:

We should query FW config if context save is supported, and no need
to reload FW if hda->booted_from_imr and ipc4_data->fw_context_save
are true.

Author: broonie

include/sound/sof/ipc4/header.h

@@ -423,6 +423,12 @@ enum sof_ipc4_fw_config_params {
 	SOF_IPC4_FW_CFG_RESERVED,
 	SOF_IPC4_FW_CFG_POWER_GATING_POLICY,
 	SOF_IPC4_FW_CFG_ASSERT_MODE,
+	SOF_IPC4_FW_RESERVED1,
+	SOF_IPC4_FW_RESERVED2,
+	SOF_IPC4_FW_RESERVED3,
+	SOF_IPC4_FW_RESERVED4,
+	SOF_IPC4_FW_RESERVED5,
+	SOF_IPC4_FW_CONTEXT_SAVE
 };
 
 struct sof_ipc4_fw_version {

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

@@ -519,14 +519,15 @@ int hda_dsp_ipc4_load_library(struct snd_sof_dev *sdev,
 			      struct sof_ipc4_fw_library *fw_lib, bool reload)
 {
 	struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
+	struct sof_ipc4_fw_data *ipc4_data = sdev->private;
 	struct hdac_ext_stream *hext_stream;
 	struct firmware stripped_firmware;
 	struct sof_ipc4_msg msg = {};
 	struct snd_dma_buffer dmab;
 	int ret, ret1;
 
-	/* IMR booting will restore the libraries as well, skip the loading */
-	if (reload && hda->booted_from_imr)
+	/* if IMR booting is enabled and fw context is saved for D3 state, skip the loading */
+	if (reload && hda->booted_from_imr && ipc4_data->fw_context_save)
 		return 0;
 
 	/* the fw_lib has been verified during loading, we can trust the validity here */

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);