diff options
Diffstat (limited to 'drivers/usb/musb/musb_host.h')
| -rw-r--r-- | drivers/usb/musb/musb_host.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h new file mode 100644 index 000000000..63298bd23 --- /dev/null +++ b/drivers/usb/musb/musb_host.h @@ -0,0 +1,124 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * MUSB OTG driver host defines + * + * Copyright 2005 Mentor Graphics Corporation + * Copyright (C) 2005-2006 by Texas Instruments + * Copyright (C) 2006-2007 Nokia Corporation + */ + +#ifndef _MUSB_HOST_H +#define _MUSB_HOST_H + +#include <linux/scatterlist.h> + +/* stored in "usb_host_endpoint.hcpriv" for scheduled endpoints */ +struct musb_qh { + struct usb_host_endpoint *hep; /* usbcore info */ + struct usb_device *dev; + struct musb_hw_ep *hw_ep; /* current binding */ + + struct list_head ring; /* of musb_qh */ + /* struct musb_qh *next; */ /* for periodic tree */ + u8 mux; /* qh multiplexed to hw_ep */ + + unsigned offset; /* in urb->transfer_buffer */ + unsigned segsize; /* current xfer fragment */ + + u8 type_reg; /* {rx,tx} type register */ + u8 intv_reg; /* {rx,tx} interval register */ + u8 addr_reg; /* device address register */ + u8 h_addr_reg; /* hub address register */ + u8 h_port_reg; /* hub port register */ + + u8 is_ready; /* safe to modify hw_ep */ + u8 type; /* XFERTYPE_* */ + u8 epnum; + u8 hb_mult; /* high bandwidth pkts per uf */ + u16 maxpacket; + u16 frame; /* for periodic schedule */ + unsigned iso_idx; /* in urb->iso_frame_desc[] */ + struct sg_mapping_iter sg_miter; /* for highmem in PIO mode */ + bool use_sg; /* to track urb using sglist */ +}; + +/* map from control or bulk queue head to the first qh on that ring */ +static inline struct musb_qh *first_qh(struct list_head *q) +{ + if (list_empty(q)) + return NULL; + return list_entry(q->next, struct musb_qh, ring); +} + + +#if IS_ENABLED(CONFIG_USB_MUSB_HOST) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) +extern struct musb *hcd_to_musb(struct usb_hcd *); +extern irqreturn_t musb_h_ep0_irq(struct musb *); +extern int musb_host_alloc(struct musb *); +extern int musb_host_setup(struct musb *, int); +extern void musb_host_cleanup(struct musb *); +extern void musb_host_tx(struct musb *, u8); +extern void musb_host_rx(struct musb *, u8); +extern void musb_root_disconnect(struct musb *musb); +extern void musb_host_free(struct musb *); +extern void musb_host_resume_root_hub(struct musb *musb); +extern void musb_host_poke_root_hub(struct musb *musb); +extern int musb_port_suspend(struct musb *musb, bool do_suspend); +extern void musb_port_reset(struct musb *musb, bool do_reset); +extern void musb_host_finish_resume(struct work_struct *work); +#else +static inline struct musb *hcd_to_musb(struct usb_hcd *hcd) +{ + return NULL; +} + +static inline irqreturn_t musb_h_ep0_irq(struct musb *musb) +{ + return 0; +} + +static inline int musb_host_alloc(struct musb *musb) +{ + return 0; +} + +static inline int musb_host_setup(struct musb *musb, int power_budget) +{ + return 0; +} + +static inline void musb_host_cleanup(struct musb *musb) {} +static inline void musb_host_free(struct musb *musb) {} +static inline void musb_host_tx(struct musb *musb, u8 epnum) {} +static inline void musb_host_rx(struct musb *musb, u8 epnum) {} +static inline void musb_root_disconnect(struct musb *musb) {} +static inline void musb_host_resume_root_hub(struct musb *musb) {} +static inline void musb_host_poke_root_hub(struct musb *musb) {} +static inline int musb_port_suspend(struct musb *musb, bool do_suspend) +{ + return 0; +} +static inline void musb_port_reset(struct musb *musb, bool do_reset) {} +static inline void musb_host_finish_resume(struct work_struct *work) {} +#endif + +struct usb_hcd; + +extern int musb_hub_status_data(struct usb_hcd *hcd, char *buf); +extern int musb_hub_control(struct usb_hcd *hcd, + u16 typeReq, u16 wValue, u16 wIndex, + char *buf, u16 wLength); + +static inline struct urb *next_urb(struct musb_qh *qh) +{ + struct list_head *queue; + + if (!qh) + return NULL; + queue = &qh->hep->urb_list; + if (list_empty(queue)) + return NULL; + return list_entry(queue->next, struct urb, urb_list); +} + +#endif /* _MUSB_HOST_H */ |