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116 lines
3.0 KiB
116 lines
3.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* MUSB OTG driver peripheral defines |
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* |
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* Copyright 2005 Mentor Graphics Corporation |
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* Copyright (C) 2005-2006 by Texas Instruments |
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* Copyright (C) 2006-2007 Nokia Corporation |
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*/ |
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#ifndef __MUSB_GADGET_H |
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#define __MUSB_GADGET_H |
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#include <linux/list.h> |
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#if IS_ENABLED(CONFIG_USB_MUSB_GADGET) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) |
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extern irqreturn_t musb_g_ep0_irq(struct musb *); |
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extern void musb_g_tx(struct musb *, u8); |
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extern void musb_g_rx(struct musb *, u8); |
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extern void musb_g_reset(struct musb *); |
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extern void musb_g_suspend(struct musb *); |
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extern void musb_g_resume(struct musb *); |
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extern void musb_g_wakeup(struct musb *); |
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extern void musb_g_disconnect(struct musb *); |
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extern void musb_gadget_cleanup(struct musb *); |
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extern int musb_gadget_setup(struct musb *); |
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#else |
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static inline irqreturn_t musb_g_ep0_irq(struct musb *musb) |
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{ |
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return 0; |
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} |
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static inline void musb_g_tx(struct musb *musb, u8 epnum) {} |
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static inline void musb_g_rx(struct musb *musb, u8 epnum) {} |
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static inline void musb_g_reset(struct musb *musb) {} |
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static inline void musb_g_suspend(struct musb *musb) {} |
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static inline void musb_g_resume(struct musb *musb) {} |
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static inline void musb_g_wakeup(struct musb *musb) {} |
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static inline void musb_g_disconnect(struct musb *musb) {} |
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static inline void musb_gadget_cleanup(struct musb *musb) {} |
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static inline int musb_gadget_setup(struct musb *musb) |
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{ |
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return 0; |
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} |
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#endif |
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enum buffer_map_state { |
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UN_MAPPED = 0, |
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PRE_MAPPED, |
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MUSB_MAPPED |
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}; |
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struct musb_request { |
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struct usb_request request; |
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struct list_head list; |
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struct musb_ep *ep; |
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struct musb *musb; |
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u8 tx; /* endpoint direction */ |
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u8 epnum; |
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enum buffer_map_state map_state; |
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}; |
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#define to_musb_request(r) container_of((r), struct musb_request, request) |
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extern struct usb_request * |
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musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags); |
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extern void musb_free_request(struct usb_ep *ep, struct usb_request *req); |
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/* |
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* struct musb_ep - peripheral side view of endpoint rx or tx side |
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*/ |
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struct musb_ep { |
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/* stuff towards the head is basically write-once. */ |
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struct usb_ep end_point; |
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char name[12]; |
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struct musb_hw_ep *hw_ep; |
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struct musb *musb; |
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u8 current_epnum; |
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/* ... when enabled/disabled ... */ |
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u8 type; |
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u8 is_in; |
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u16 packet_sz; |
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const struct usb_endpoint_descriptor *desc; |
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struct dma_channel *dma; |
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/* later things are modified based on usage */ |
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struct list_head req_list; |
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u8 wedged; |
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/* true if lock must be dropped but req_list may not be advanced */ |
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u8 busy; |
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u8 hb_mult; |
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}; |
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#define to_musb_ep(ep) container_of((ep), struct musb_ep, end_point) |
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static inline struct musb_request *next_request(struct musb_ep *ep) |
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{ |
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struct list_head *queue = &ep->req_list; |
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if (list_empty(queue)) |
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return NULL; |
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return container_of(queue->next, struct musb_request, list); |
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} |
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extern const struct usb_ep_ops musb_g_ep0_ops; |
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extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int); |
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extern void musb_ep_restart(struct musb *, struct musb_request *); |
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#endif /* __MUSB_GADGET_H */
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