diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.c
index 611fb0e56480..f29a8d143fee 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.c
@@ -241,3 +241,143 @@ void mtk_vcodec_dec_optee_release(struct mtk_vdec_optee_private *optee_private)
 	mutex_unlock(&optee_private->tee_mutex);
 }
 EXPORT_SYMBOL_GPL(mtk_vcodec_dec_optee_release);
+
+static int mtk_vcodec_dec_optee_fill_shm(struct tee_param *command_params,
+					 struct mtk_vdec_optee_shm_memref *shm_memref,
+					 struct mtk_vdec_optee_data_to_shm *data,
+					 int index, struct device *dev)
+{
+	if (!data->msg_buf_size[index] || !data->msg_buf[index]) {
+		pr_err(MTK_DBG_VCODEC_STR "tee invalid buf param: %d.\n", index);
+		return -EINVAL;
+	}
+
+	*command_params = (struct tee_param) {
+		.attr = shm_memref->param_type,
+		.u.memref = {
+			.shm = shm_memref->msg_shm,
+			.size = data->msg_buf_size[index],
+			.shm_offs = 0,
+		},
+	};
+
+	if (!shm_memref->copy_to_ta) {
+		dev_dbg(dev, MTK_DBG_VCODEC_STR "share memref data: 0x%x param_type:%llu.\n",
+			*((unsigned int *)shm_memref->msg_shm_ca_buf), shm_memref->param_type);
+		return 0;
+	}
+
+	memset(shm_memref->msg_shm_ca_buf, 0, shm_memref->msg_shm_size);
+	memcpy(shm_memref->msg_shm_ca_buf, data->msg_buf[index], data->msg_buf_size[index]);
+
+	dev_dbg(dev, MTK_DBG_VCODEC_STR "share memref data => msg id:0x%x 0x%x param_type:%llu.\n",
+		*((unsigned int *)data->msg_buf[index]),
+		*((unsigned int *)shm_memref->msg_shm_ca_buf),
+		shm_memref->param_type);
+
+	return 0;
+}
+
+void mtk_vcodec_dec_optee_set_data(struct mtk_vdec_optee_data_to_shm *data,
+				   void *buf, int buf_size,
+				   enum mtk_vdec_optee_data_index index)
+{
+	data->msg_buf[index] = buf;
+	data->msg_buf_size[index] = buf_size;
+}
+EXPORT_SYMBOL_GPL(mtk_vcodec_dec_optee_set_data);
+
+int mtk_vcodec_dec_optee_invokd_cmd(struct mtk_vdec_optee_private *optee_private,
+				    enum mtk_vdec_hw_id hw_id,
+				    struct mtk_vdec_optee_data_to_shm *data)
+{
+	struct device *dev = &optee_private->vcodec_dev->plat_dev->dev;
+	struct tee_ioctl_invoke_arg trans_args;
+	struct tee_param command_params[MTK_OPTEE_MAX_TEE_PARAMS];
+	struct mtk_vdec_optee_ca_info *ca_info;
+	struct mtk_vdec_optee_shm_memref *shm_memref;
+	int ret, index;
+
+	if (hw_id == MTK_VDEC_LAT0)
+		ca_info = &optee_private->lat_ca;
+	else
+		ca_info = &optee_private->core_ca;
+
+	memset(&trans_args, 0, sizeof(trans_args));
+	memset(command_params, 0, sizeof(command_params));
+
+	trans_args = (struct tee_ioctl_invoke_arg) {
+		.func = ca_info->vdec_session_func,
+		.session = ca_info->vdec_session_id,
+		.num_params = MTK_OPTEE_MAX_TEE_PARAMS,
+	};
+
+	/* Fill msg command parameters */
+	for (index = 0; index < MTK_OPTEE_MAX_TEE_PARAMS; index++) {
+		shm_memref = &ca_info->shm_memref[index];
+
+		if (shm_memref->param_type == TEE_IOCTL_PARAM_ATTR_TYPE_NONE ||
+		    data->msg_buf_size[index] == 0)
+			continue;
+
+		dev_dbg(dev, MTK_DBG_VCODEC_STR "tee share memory data size: %d -> %d.\n",
+			data->msg_buf_size[index], shm_memref->msg_shm_size);
+
+		if (data->msg_buf_size[index] > shm_memref->msg_shm_size) {
+			dev_err(dev, MTK_DBG_VCODEC_STR "tee buf size big than shm (%d -> %d).\n",
+				data->msg_buf_size[index], shm_memref->msg_shm_size);
+			return -EINVAL;
+		}
+
+		ret = mtk_vcodec_dec_optee_fill_shm(&command_params[index], shm_memref,
+						    data, index, dev);
+		if (ret)
+			return ret;
+	}
+
+	ret = tee_client_invoke_func(optee_private->tee_vdec_ctx, &trans_args, command_params);
+	if (ret < 0 || trans_args.ret != 0) {
+		dev_err(dev, MTK_DBG_VCODEC_STR "tee submit command fail: 0x%x 0x%x.\n",
+			trans_args.ret, ret);
+		return (ret < 0) ? ret : trans_args.ret;
+	}
+
+	/* clear all attrs, set all command param to unused */
+	for (index = 0; index < MTK_OPTEE_MAX_TEE_PARAMS; index++) {
+		data->msg_buf[index] = NULL;
+		data->msg_buf_size[index] = 0;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mtk_vcodec_dec_optee_invokd_cmd);
+
+void *mtk_vcodec_dec_get_shm_buffer_va(struct mtk_vdec_optee_private *optee_private,
+				       enum mtk_vdec_hw_id hw_id,
+				       enum mtk_vdec_optee_data_index data_index)
+{
+	struct mtk_vdec_optee_ca_info *ca_info;
+
+	if (hw_id == MTK_VDEC_LAT0)
+		ca_info = &optee_private->lat_ca;
+	else
+		ca_info = &optee_private->core_ca;
+
+	return ca_info->shm_memref[data_index].msg_shm_ca_buf;
+}
+EXPORT_SYMBOL_GPL(mtk_vcodec_dec_get_shm_buffer_va);
+
+int mtk_vcodec_dec_get_shm_buffer_size(struct mtk_vdec_optee_private *optee_private,
+				       enum mtk_vdec_hw_id hw_id,
+				       enum mtk_vdec_optee_data_index data_index)
+{
+	struct mtk_vdec_optee_ca_info *ca_info;
+
+	if (hw_id == MTK_VDEC_LAT0)
+		ca_info = &optee_private->lat_ca;
+	else
+		ca_info = &optee_private->core_ca;
+
+	return ca_info->shm_memref[data_index].msg_shm_size;
+}
+EXPORT_SYMBOL_GPL(mtk_vcodec_dec_get_shm_buffer_size);
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.h b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.h
index 24aa63af9887..c24a567ec877 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.h
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.h
@@ -62,6 +62,16 @@ enum mtk_vdec_optee_data_index {
 	OPTEE_MAX_INDEX,
 };
 
+/**
+ * struct mtk_vdec_optee_data_to_shm - shm data used for TA
+ * @msg_buf:     msg information to TA.
+ * @msg_buf_len: length of msg information.
+ */
+struct mtk_vdec_optee_data_to_shm {
+	void *msg_buf[MTK_OPTEE_MAX_TEE_PARAMS];
+	int msg_buf_size[MTK_OPTEE_MAX_TEE_PARAMS];
+};
+
 /**
  * struct mtk_vdec_optee_private - optee private data
  * @vcodec_dev:     pointer to the mtk_vcodec_dev of the device
@@ -102,4 +112,45 @@ int mtk_vcodec_dec_optee_private_init(struct mtk_vcodec_dec_dev *vcodec_dev);
  */
 void mtk_vcodec_dec_optee_release(struct mtk_vdec_optee_private *optee_private);
 
+/**
+ * mtk_vcodec_dec_optee_set_data - set buffer to share memref.
+ * @vcodec_dev: normal world data used to init optee share memory
+ * @buf: normal world buffer address
+ * @buf_size: buf size
+ * @data_index: indentify each share memory informaiton
+ */
+void mtk_vcodec_dec_optee_set_data(struct mtk_vdec_optee_data_to_shm *data,
+				   void *buf, int buf_size,
+				   enum mtk_vdec_optee_data_index data_index);
+
+/**
+ * mtk_vcodec_dec_optee_invokd_cmd - send share memory data to optee .
+ * @optee_private: optee private context
+ * @hw_id: hardware index
+ * @data: normal world data used to init optee share memory
+ */
+int mtk_vcodec_dec_optee_invokd_cmd(struct mtk_vdec_optee_private *optee_private,
+				    enum mtk_vdec_hw_id hw_id,
+				    struct mtk_vdec_optee_data_to_shm *data);
+
+/**
+ * mtk_vcodec_dec_get_shm_buffer_va - close the communication channels with TA.
+ * @optee_private: optee private context
+ * @hw_id:         hardware index
+ * @@data_index: indentify each share memory informaiton
+ */
+void *mtk_vcodec_dec_get_shm_buffer_va(struct mtk_vdec_optee_private *optee_private,
+				       enum mtk_vdec_hw_id hw_id,
+				       enum mtk_vdec_optee_data_index data_index);
+
+/**
+ * mtk_vcodec_dec_get_shm_buffer_size - close the communication channels with TA.
+ * @optee_private: optee private context
+ * @hw_id:         hardware index
+ * @@data_index: indentify each share memory informaiton
+ */
+int mtk_vcodec_dec_get_shm_buffer_size(struct mtk_vdec_optee_private *optee_private,
+				       enum mtk_vdec_hw_id hw_id,
+				       enum mtk_vdec_optee_data_index data_index);
+
 #endif /* _MTK_VCODEC_FW_OPTEE_H_ */
