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21b650c236
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Chen-Yu Tsai <wens@csie.org> Acked-by: Bin Liu <b-liu@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
// 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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static inline struct musb_request *to_musb_request(struct usb_request *req)
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{
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return req ? container_of(req, struct musb_request, request) : NULL;
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}
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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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static inline struct musb_ep *to_musb_ep(struct usb_ep *ep)
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{
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return ep ? container_of(ep, struct musb_ep, end_point) : NULL;
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}
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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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