130 строки
4.0 KiB
C
130 строки
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* MUSB OTG driver host 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_HOST_H
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#define _MUSB_HOST_H
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#include <linux/scatterlist.h>
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/* stored in "usb_host_endpoint.hcpriv" for scheduled endpoints */
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struct musb_qh {
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struct usb_host_endpoint *hep; /* usbcore info */
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struct usb_device *dev;
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struct musb_hw_ep *hw_ep; /* current binding */
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struct list_head ring; /* of musb_qh */
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/* struct musb_qh *next; */ /* for periodic tree */
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u8 mux; /* qh multiplexed to hw_ep */
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unsigned offset; /* in urb->transfer_buffer */
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unsigned segsize; /* current xfer fragment */
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u8 type_reg; /* {rx,tx} type register */
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u8 intv_reg; /* {rx,tx} interval register */
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u8 addr_reg; /* device address register */
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u8 h_addr_reg; /* hub address register */
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u8 h_port_reg; /* hub port register */
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u8 is_ready; /* safe to modify hw_ep */
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u8 type; /* XFERTYPE_* */
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u8 epnum;
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u8 hb_mult; /* high bandwidth pkts per uf */
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u16 maxpacket;
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u16 frame; /* for periodic schedule */
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unsigned iso_idx; /* in urb->iso_frame_desc[] */
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struct sg_mapping_iter sg_miter; /* for highmem in PIO mode */
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bool use_sg; /* to track urb using sglist */
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};
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/* map from control or bulk queue head to the first qh on that ring */
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static inline struct musb_qh *first_qh(struct list_head *q)
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{
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if (list_empty(q))
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return NULL;
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return list_entry(q->next, struct musb_qh, ring);
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}
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#if IS_ENABLED(CONFIG_USB_MUSB_HOST) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE)
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extern struct musb *hcd_to_musb(struct usb_hcd *);
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extern irqreturn_t musb_h_ep0_irq(struct musb *);
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extern int musb_host_alloc(struct musb *);
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extern int musb_host_setup(struct musb *, int);
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extern void musb_host_cleanup(struct musb *);
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extern void musb_host_tx(struct musb *, u8);
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extern void musb_host_rx(struct musb *, u8);
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extern void musb_root_disconnect(struct musb *musb);
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extern void musb_host_free(struct musb *);
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extern void musb_host_cleanup(struct musb *);
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extern void musb_host_tx(struct musb *, u8);
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extern void musb_host_rx(struct musb *, u8);
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extern void musb_root_disconnect(struct musb *musb);
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extern void musb_host_resume_root_hub(struct musb *musb);
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extern void musb_host_poke_root_hub(struct musb *musb);
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extern int musb_port_suspend(struct musb *musb, bool do_suspend);
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extern void musb_port_reset(struct musb *musb, bool do_reset);
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extern void musb_host_finish_resume(struct work_struct *work);
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#else
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static inline struct musb *hcd_to_musb(struct usb_hcd *hcd)
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{
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return NULL;
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}
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static inline irqreturn_t musb_h_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 int musb_host_alloc(struct musb *musb)
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{
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return 0;
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}
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static inline int musb_host_setup(struct musb *musb, int power_budget)
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{
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return 0;
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}
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static inline void musb_host_cleanup(struct musb *musb) {}
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static inline void musb_host_free(struct musb *musb) {}
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static inline void musb_host_tx(struct musb *musb, u8 epnum) {}
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static inline void musb_host_rx(struct musb *musb, u8 epnum) {}
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static inline void musb_root_disconnect(struct musb *musb) {}
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static inline void musb_host_resume_root_hub(struct musb *musb) {}
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static inline void musb_host_poll_rh_status(struct musb *musb) {}
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static inline void musb_host_poke_root_hub(struct musb *musb) {}
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static inline int musb_port_suspend(struct musb *musb, bool do_suspend)
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{
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return 0;
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}
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static inline void musb_port_reset(struct musb *musb, bool do_reset) {}
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static inline void musb_host_finish_resume(struct work_struct *work) {}
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#endif
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struct usb_hcd;
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extern int musb_hub_status_data(struct usb_hcd *hcd, char *buf);
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extern int musb_hub_control(struct usb_hcd *hcd,
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u16 typeReq, u16 wValue, u16 wIndex,
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char *buf, u16 wLength);
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static inline struct urb *next_urb(struct musb_qh *qh)
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{
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struct list_head *queue;
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if (!qh)
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return NULL;
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queue = &qh->hep->urb_list;
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if (list_empty(queue))
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return NULL;
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return list_entry(queue->next, struct urb, urb_list);
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}
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#endif /* _MUSB_HOST_H */
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