ASoC: SOF: ipc4/ipc4-loader: Add SOF_INFO and CODEC_INFO to fw_config_params

SOF_INFO (id == 35) tuple holds tuple structured information about SOF
features.

The first entry in SOF_INFO is the SOF_CODEC_INFO (id == 0) which contains
information about the supported codecs for decode/encode in the booted
firmware.

If present in the fw_config payload, make a copy of it and store it
sof_ipc4_fw_data->codec_info to be used by the compressed code.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>

Author: ujfalusi

include/sound/sof/ipc4/header.h

@@ -437,12 +437,10 @@ 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
+	/* Reserved: 24 - 28 */
+	SOF_IPC4_FW_CONTEXT_SAVE = 29,
+	/* Reserved: 30 - 34 */
+	SOF_IPC4_FW_CFG_SOF_INFO = 35,
 };
 
 struct sof_ipc4_fw_version {
@@ -452,6 +450,14 @@ struct sof_ipc4_fw_version {
 	uint16_t build;
 } __packed;
 
+/*
+ * tuple based array for SOF specific information under SOF_IPC4_FW_CFG_SOF_INFO
+ * tuple of fw_config
+ */
+enum ipc4_fw_sof_info_params {
+	SOF_IPC4_SOF_CODEC_INFO,
+};
+
 /* Payload data for SOF_IPC4_MOD_SET_DX */
 struct sof_ipc4_dx_state_info {
 	/* core(s) to apply the change */

sound/soc/sof/ipc4-loader.c

@@ -417,6 +417,52 @@ static int sof_ipc4_validate_firmware(struct snd_sof_dev *sdev)
 	return 0;
 }
 
+static int sof_ipc4_query_sof_info(struct snd_sof_dev *sdev,
+				   void *sof_info_data, u32 sof_info_size)
+{
+	struct sof_ipc4_fw_data *ipc4_data = sdev->private;
+	struct sof_ipc4_tuple *tuple;
+	size_t tuple_size;
+	size_t offset = 0;
+	int ret = 0;
+
+	while (offset < sof_info_size) {
+		if (sof_info_size - offset < sizeof(*tuple)) {
+			dev_err(sdev->dev, "Invalid SOF info tuple header at offset %zu\n", offset);
+			ret = -EINVAL;
+			goto out;
+		}
+
+		tuple = (struct sof_ipc4_tuple *)((u8 *)sof_info_data + offset);
+		tuple_size = sizeof(*tuple) + tuple->size;
+		if (tuple_size < sizeof(*tuple) || tuple_size > sof_info_size - offset) {
+			dev_err(sdev->dev,
+				"Invalid SOF info tuple size %u at offset %zu\n",
+				tuple->size, offset);
+			ret = -EINVAL;
+			goto out;
+		}
+
+		switch (tuple->type) {
+		case SOF_IPC4_SOF_CODEC_INFO:
+			ipc4_data->codec_info = devm_kmemdup(sdev->dev, tuple->value,
+							     tuple->size, GFP_KERNEL);
+			if (!ipc4_data->codec_info) {
+				ret = -ENOMEM;
+				goto out;
+			}
+			break;
+		default:
+			break;
+		}
+
+		offset += tuple_size;
+	}
+
+out:
+	return ret;
+}
+
 int sof_ipc4_query_fw_configuration(struct snd_sof_dev *sdev)
 {
 	struct sof_ipc4_fw_data *ipc4_data = sdev->private;
@@ -492,6 +538,11 @@ int sof_ipc4_query_fw_configuration(struct snd_sof_dev *sdev)
 			 */
 			ipc4_data->libraries_restored = ipc4_data->fw_context_save;
 			break;
+		case SOF_IPC4_FW_CFG_SOF_INFO:
+			ret = sof_ipc4_query_sof_info(sdev, tuple->value, tuple->size);
+			if (ret)
+				goto out;
+			break;
 		default:
 			break;
 		}

sound/soc/sof/ipc4-priv.h

@@ -81,6 +81,8 @@ struct snd_ipc4_nhlt {
  * @libraries_restored: The libraries have been retained during firmware boot
  * @nhlt_list: The NHLT tables from the BIOS and the topology manifest
  *
+ * @codec_info: Information about the available codecs in booted firmware. The
+ *		data is to be used by the code for compressed support.
  * @load_library: Callback function for platform dependent library loading
  * @pipeline_state_mutex: Mutex to protect pipeline triggers, ref counts, states and deletion
  */
@@ -97,6 +99,8 @@ struct sof_ipc4_fw_data {
 	bool libraries_restored;
 	struct list_head nhlt_list;
 
+	void *codec_info;
+
 	int (*load_library)(struct snd_sof_dev *sdev,
 			    struct sof_ipc4_fw_library *fw_lib, bool reload);
 	void (*intel_configure_mic_privacy)(struct snd_sof_dev *sdev,