From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/usb/musb/musb_gadget.h | 116 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 drivers/usb/musb/musb_gadget.h (limited to 'drivers/usb/musb/musb_gadget.h') diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h new file mode 100644 index 000000000..d02663660 --- /dev/null +++ b/drivers/usb/musb/musb_gadget.h @@ -0,0 +1,116 @@ +// 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 + +#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 */ -- cgit v1.2.3