[PATCH v4 18/26] ASoC: SOF: ipc4/ipc4-loader: Add SOF_INFO and CODEC_INFO to fw_config_params

[Peter Ujfalusi <peter.ujfalusi@linux.intel.com>]

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>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
---
 include/sound/sof/ipc4/header.h | 18 ++++++++++------
 sound/soc/sof/ipc4-loader.c     | 37 +++++++++++++++++++++++++++++++++
 sound/soc/sof/ipc4-priv.h       |  4 ++++
 3 files changed, 53 insertions(+), 6 deletions(-)

diff --git a/include/sound/sof/ipc4/header.h b/include/sound/sof/ipc4/header.h
index e5161f0a37e8..dd1e0d1cf0d8 100644
--- a/include/sound/sof/ipc4/header.h
+++ b/include/sound/sof/ipc4/header.h
@@ -436,12 +436,10 @@ 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 {
@@ -451,6 +449,14 @@ 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 */
diff --git a/sound/soc/sof/ipc4-loader.c b/sound/soc/sof/ipc4-loader.c
index 07a78cb3c25c..2dff394f4128 100644
--- a/sound/soc/sof/ipc4-loader.c
+++ b/sound/soc/sof/ipc4-loader.c
@@ -408,6 +408,38 @@ 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 offset = 0;
+
+	/*
+	 * No size validation is needed as the sof_info data is coming from
+	 * firmware as part of the firmware config, it is guarantied to be
+	 * correct.
+	 */
+	while (offset < sof_info_size) {
+		tuple = (struct sof_ipc4_tuple *)((u8 *)sof_info_data + offset);
+
+		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)
+				return -ENOMEM;
+			break;
+		default:
+			break;
+		}
+
+		offset += sizeof(*tuple) + tuple->size;
+	}
+
+	return 0;
+}
+
 int sof_ipc4_query_fw_configuration(struct snd_sof_dev *sdev)
 {
 	struct sof_ipc4_fw_data *ipc4_data = sdev->private;
@@ -483,6 +515,11 @@ 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;
 		}
diff --git a/sound/soc/sof/ipc4-priv.h b/sound/soc/sof/ipc4-priv.h
index 7c0861d63bef..07df6799c7a8 100644
--- a/sound/soc/sof/ipc4-priv.h
+++ b/sound/soc/sof/ipc4-priv.h
@@ -75,6 +75,8 @@ struct sof_ipc4_fw_library {
  * @fw_context_save: Firmware supports full context save and restore
  * @libraries_restored: The libraries have been retained during firmware boot
  *
+ * @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
  */
@@ -91,6 +93,8 @@ struct sof_ipc4_fw_data {
 	bool fw_context_save;
 	bool libraries_restored;
 
+	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,
-- 
2.55.0