diff --git a/drivers/usb/isp1760/isp1760-hcd.h b/drivers/usb/isp1760/isp1760-hcd.h
new file mode 100644
index 0000000..c47b739
--- /dev/null
+++ b/drivers/usb/isp1760/isp1760-hcd.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ISP1760_HCD_H_
+#define _ISP1760_HCD_H_
+
+#include <regmap.h>
+
+#include "isp1760-regs.h"
+
+struct isp1760_qh;
+struct isp1760_qtd;
+struct resource;
+struct usb_hcd;
+
+struct isp1760_slotinfo {
+	struct isp1760_qh *qh;
+	struct isp1760_qtd *qtd;
+	unsigned long timestamp;
+};
+
+/* chip memory management */
+#define ISP176x_BLOCK_MAX (32 + 20 + 4)
+#define ISP176x_BLOCK_NUM 3
+
+struct isp1760_memory_layout {
+	unsigned int blocks[ISP176x_BLOCK_NUM];
+	unsigned int blocks_size[ISP176x_BLOCK_NUM];
+
+	unsigned int slot_num;
+	unsigned int payload_blocks;
+	unsigned int payload_area_size;
+};
+
+struct isp1760_memory_chunk {
+	unsigned int start;
+	unsigned int size;
+	unsigned int free;
+};
+
+enum isp1760_queue_head_types {
+	QH_CONTROL,
+	QH_BULK,
+	QH_INTERRUPT,
+	QH_END
+};
+
+struct isp1760_hcd {
+	struct usb_hcd		*hcd;
+	struct udevice		*dev;
+
+	void __iomem		*base;
+
+	struct regmap		*regs;
+	struct regmap_field	*fields[HC_FIELD_MAX];
+
+	bool			is_isp1763;
+	const struct isp1760_memory_layout	*memory_layout;
+
+	struct isp1760_slotinfo	*atl_slots;
+	int			atl_done_map;
+	struct isp1760_slotinfo	*int_slots;
+	int			int_done_map;
+	struct isp1760_memory_chunk memory_pool[ISP176x_BLOCK_MAX];
+	struct list_head	qh_list[QH_END];
+
+	/* periodic schedule support */
+#define	DEFAULT_I_TDPS		1024
+	unsigned int		periodic_size;
+	unsigned int		i_thresh;
+	unsigned long		reset_done;
+	unsigned long		next_statechange;
+};
+
+int isp1760_hcd_register(struct isp1760_hcd *priv, struct resource *mem,
+			 int irq, unsigned long irqflags, struct udevice *dev);
+void isp1760_hcd_unregister(struct isp1760_hcd *priv);
+int isp1760_hcd_lowlevel_init(struct isp1760_hcd *priv);
+
+int isp1760_init_kmem_once(void);
+void isp1760_deinit_kmem_cache(void);
+
+#endif /* _ISP1760_HCD_H_ */