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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | /* 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 { UN_MAPPED = 0, PRE_MAPPED, MUSB_MAPPED }; struct musb_request { struct usb_request request; struct list_head list; struct musb_ep *ep; struct musb *musb; u8 tx; /* endpoint direction */ u8 epnum; enum buffer_map_state map_state; }; #define to_musb_request(r) container_of((r), struct musb_request, request) 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 { /* stuff towards the head is basically write-once. */ struct usb_ep end_point; char name[12]; struct musb_hw_ep *hw_ep; struct musb *musb; u8 current_epnum; /* ... when enabled/disabled ... */ u8 type; u8 is_in; u16 packet_sz; const struct usb_endpoint_descriptor *desc; struct dma_channel *dma; /* later things are modified based on usage */ struct list_head req_list; u8 wedged; /* true if lock must be dropped but req_list may not be advanced */ u8 busy; u8 hb_mult; }; #define to_musb_ep(ep) container_of((ep), struct musb_ep, end_point) static inline struct musb_request *next_request(struct musb_ep *ep) { struct list_head *queue = &ep->req_list; if (list_empty(queue)) return NULL; return container_of(queue->next, struct musb_request, list); } 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 */ |