diff --git a/sound/pci/ctxfi/ctdaio.h b/sound/pci/ctxfi/ctdaio.h
new file mode 100644
index 0000000..0f52ce5
--- /dev/null
+++ b/sound/pci/ctxfi/ctdaio.h
@@ -0,0 +1,122 @@
+/**
+ * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
+ *
+ * This source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ * @File	ctdaio.h
+ *
+ * @Brief
+ * This file contains the definition of Digital Audio Input Output
+ * resource management object.
+ *
+ * @Author	Liu Chun
+ * @Date 	May 23 2008
+ *
+ */
+
+#ifndef CTDAIO_H
+#define CTDAIO_H
+
+#include "ctresource.h"
+#include "ctimap.h"
+#include <linux/spinlock.h>
+#include <linux/list.h>
+
+/* Define the descriptor of a daio resource */
+enum DAIOTYP {
+	LINEO1,
+	LINEO2,
+	LINEO3,
+	LINEO4,
+	SPDIFOO,	/* S/PDIF Out (Flexijack/Optical) */
+	LINEIM,
+	SPDIFIO,	/* S/PDIF In (Flexijack/Optical) on the card */
+	SPDIFI1,	/* S/PDIF In on internal Drive Bay */
+	NUM_DAIOTYP
+};
+
+struct dao_rsc_ops;
+struct dai_rsc_ops;
+struct daio_mgr;
+
+struct daio {
+	struct rsc rscl;	/* Basic resource info for left TX/RX */
+	struct rsc rscr;	/* Basic resource info for right TX/RX */
+	enum DAIOTYP type;
+};
+
+struct dao {
+	struct daio daio;
+	struct dao_rsc_ops *ops;	/* DAO specific operations */
+	struct imapper **imappers;
+	struct daio_mgr *mgr;
+	void *hw;
+	void *ctrl_blk;
+};
+
+struct dai {
+	struct daio daio;
+	struct dai_rsc_ops *ops;	/* DAI specific operations */
+	void *hw;
+	void *ctrl_blk;
+};
+
+struct dao_desc {
+	unsigned int msr:4;
+	unsigned int passthru:1;
+};
+
+struct dao_rsc_ops {
+	int (*set_spos)(struct dao *dao, unsigned int spos);
+	int (*commit_write)(struct dao *dao);
+	int (*get_spos)(struct dao *dao, unsigned int *spos);
+	int (*reinit)(struct dao *dao, const struct dao_desc *desc);
+	int (*set_left_input)(struct dao *dao, struct rsc *input);
+	int (*set_right_input)(struct dao *dao, struct rsc *input);
+	int (*clear_left_input)(struct dao *dao);
+	int (*clear_right_input)(struct dao *dao);
+};
+
+struct dai_rsc_ops {
+	int (*set_srt_srcl)(struct dai *dai, struct rsc *src);
+	int (*set_srt_srcr)(struct dai *dai, struct rsc *src);
+	int (*set_srt_msr)(struct dai *dai, unsigned int msr);
+	int (*set_enb_src)(struct dai *dai, unsigned int enb);
+	int (*set_enb_srt)(struct dai *dai, unsigned int enb);
+	int (*commit_write)(struct dai *dai);
+};
+
+/* Define daio resource request description info */
+struct daio_desc {
+	unsigned int type:4;
+	unsigned int msr:4;
+	unsigned int passthru:1;
+};
+
+struct daio_mgr {
+	struct rsc_mgr mgr;	/* Basic resource manager info */
+	spinlock_t mgr_lock;
+	spinlock_t imap_lock;
+	struct list_head imappers;
+	struct imapper *init_imap;
+	unsigned int init_imap_added;
+
+	 /* request one daio resource */
+	int (*get_daio)(struct daio_mgr *mgr,
+			const struct daio_desc *desc, struct daio **rdaio);
+	/* return one daio resource */
+	int (*put_daio)(struct daio_mgr *mgr, struct daio *daio);
+	int (*daio_enable)(struct daio_mgr *mgr, struct daio *daio);
+	int (*daio_disable)(struct daio_mgr *mgr, struct daio *daio);
+	int (*imap_add)(struct daio_mgr *mgr, struct imapper *entry);
+	int (*imap_delete)(struct daio_mgr *mgr, struct imapper *entry);
+	int (*commit_write)(struct daio_mgr *mgr);
+};
+
+/* Constructor and destructor of daio resource manager */
+int daio_mgr_create(void *hw, struct daio_mgr **rdaio_mgr);
+int daio_mgr_destroy(struct daio_mgr *daio_mgr);
+
+#endif /* CTDAIO_H */