linux/drivers/usb/musb/musb_gadget.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * MUSB OTG driver peripheral defines
 *
 * Copyright 2005 Mentor Graphics Corporation
 * Copyright (C) 2005-2006 by Texas Instruments
 * Copyright (C) 2006-2007 Nokia Corporation
 */

#ifndef __MUSB_GADGET_H
#define __MUSB_GADGET_H

#include <linux/list.h>

#if IS_ENABLED(CONFIG_USB_MUSB_GADGET) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE)
extern irqreturn_t musb_g_ep0_irq(struct musb *);
extern void musb_g_tx(struct musb *, u8);
extern void musb_g_rx(struct musb *, u8);
extern void musb_g_reset(struct musb *);
extern void musb_g_suspend(struct musb *);
extern void musb_g_resume(struct musb *);
extern void musb_g_wakeup(struct musb *);
extern void musb_g_disconnect(struct musb *);
extern void musb_gadget_cleanup(struct musb *);
extern int musb_gadget_setup(struct musb *);

#else
static inline irqreturn_t musb_g_ep0_irq(struct musb *musb)
{
	return 0;
}

static inline void musb_g_tx(struct musb *musb, u8 epnum)	{}
static inline void musb_g_rx(struct musb *musb, u8 epnum)	{}
static inline void musb_g_reset(struct musb *musb)		{}
static inline void musb_g_suspend(struct musb *musb)		{}
static inline void musb_g_resume(struct musb *musb)		{}
static inline void musb_g_wakeup(struct musb *musb)		{}
static inline void musb_g_disconnect(struct musb *musb)		{}
static inline void musb_gadget_cleanup(struct musb *musb)	{}
static inline int musb_gadget_setup(struct musb *musb)
{
	return 0;
}
#endif

enum buffer_map_state { … };

struct musb_request { … };

#define to_musb_request(r) …

extern struct usb_request *
musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags);
extern void musb_free_request(struct usb_ep *ep, struct usb_request *req);


/*
 * struct musb_ep - peripheral side view of endpoint rx or tx side
 */
struct musb_ep { … };

#define to_musb_ep(ep) …

static inline struct musb_request *next_request(struct musb_ep *ep)
{ … }

extern const struct usb_ep_ops musb_g_ep0_ops;

extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int);

extern void musb_ep_restart(struct musb *, struct musb_request *);

#endif		/* __MUSB_GADGET_H */