1 // SPDX-License-Identifier: GPL-2.0
3 * MUSB OTG driver peripheral defines
5 * Copyright 2005 Mentor Graphics Corporation
6 * Copyright (C) 2005-2006 by Texas Instruments
7 * Copyright (C) 2006-2007 Nokia Corporation
10 #ifndef __MUSB_GADGET_H
11 #define __MUSB_GADGET_H
13 #include <linux/list.h>
15 #if IS_ENABLED(CONFIG_USB_MUSB_GADGET) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE)
16 extern irqreturn_t musb_g_ep0_irq(struct musb *);
17 extern void musb_g_tx(struct musb *, u8);
18 extern void musb_g_rx(struct musb *, u8);
19 extern void musb_g_reset(struct musb *);
20 extern void musb_g_suspend(struct musb *);
21 extern void musb_g_resume(struct musb *);
22 extern void musb_g_wakeup(struct musb *);
23 extern void musb_g_disconnect(struct musb *);
24 extern void musb_gadget_cleanup(struct musb *);
25 extern int musb_gadget_setup(struct musb *);
28 static inline irqreturn_t musb_g_ep0_irq(struct musb *musb)
33 static inline void musb_g_tx(struct musb *musb, u8 epnum) {}
34 static inline void musb_g_rx(struct musb *musb, u8 epnum) {}
35 static inline void musb_g_reset(struct musb *musb) {}
36 static inline void musb_g_suspend(struct musb *musb) {}
37 static inline void musb_g_resume(struct musb *musb) {}
38 static inline void musb_g_wakeup(struct musb *musb) {}
39 static inline void musb_g_disconnect(struct musb *musb) {}
40 static inline void musb_gadget_cleanup(struct musb *musb) {}
41 static inline int musb_gadget_setup(struct musb *musb)
47 enum buffer_map_state {
54 struct usb_request request;
55 struct list_head list;
58 u8 tx; /* endpoint direction */
60 enum buffer_map_state map_state;
63 static inline struct musb_request *to_musb_request(struct usb_request *req)
65 return req ? container_of(req, struct musb_request, request) : NULL;
68 extern struct usb_request *
69 musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags);
70 extern void musb_free_request(struct usb_ep *ep, struct usb_request *req);
74 * struct musb_ep - peripheral side view of endpoint rx or tx side
77 /* stuff towards the head is basically write-once. */
78 struct usb_ep end_point;
80 struct musb_hw_ep *hw_ep;
84 /* ... when enabled/disabled ... */
88 const struct usb_endpoint_descriptor *desc;
89 struct dma_channel *dma;
91 /* later things are modified based on usage */
92 struct list_head req_list;
96 /* true if lock must be dropped but req_list may not be advanced */
102 static inline struct musb_ep *to_musb_ep(struct usb_ep *ep)
104 return ep ? container_of(ep, struct musb_ep, end_point) : NULL;
107 static inline struct musb_request *next_request(struct musb_ep *ep)
109 struct list_head *queue = &ep->req_list;
111 if (list_empty(queue))
113 return container_of(queue->next, struct musb_request, list);
116 extern const struct usb_ep_ops musb_g_ep0_ops;
118 extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int);
120 extern void musb_ep_restart(struct musb *, struct musb_request *);
122 #endif /* __MUSB_GADGET_H */