drivers/usb/musb/musb_host.h

   1 /*
   2  * MUSB OTG driver host defines
   3  *
   4  * Copyright 2005 Mentor Graphics Corporation
   5  * Copyright (C) 2005-2006 by Texas Instruments
   6  * Copyright (C) 2006-2007 Nokia Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
  23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  25  * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  29  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #ifndef _MUSB_HOST_H
  36 #define _MUSB_HOST_H
  37
  38 static inline struct usb_hcd *musb_to_hcd(struct musb *musb)
  39 {
  40         return container_of((void *) musb, struct usb_hcd, hcd_priv);
  41 }
  42
  43 static inline struct musb *hcd_to_musb(struct usb_hcd *hcd)
  44 {
  45         return (struct musb *) (hcd->hcd_priv);
  46 }
  47
  48 /* stored in "usb_host_endpoint.hcpriv" for scheduled endpoints */
  49 struct musb_qh {
  50         struct usb_host_endpoint *hep;          /* usbcore info */
  51         struct usb_device       *dev;
  52         struct musb_hw_ep       *hw_ep;         /* current binding */
  53
  54         struct list_head        ring;           /* of musb_qh */
  55         /* struct musb_qh               *next; */       /* for periodic tree */
  56         u8                      mux;            /* qh multiplexed to hw_ep */
  57
  58         unsigned                offset;         /* in urb->transfer_buffer */
  59         unsigned                segsize;        /* current xfer fragment */
  60
  61         u8                      type_reg;       /* {rx,tx} type register */
  62         u8                      intv_reg;       /* {rx,tx} interval register */
  63         u8                      addr_reg;       /* device address register */
  64         u8                      h_addr_reg;     /* hub address register */
  65         u8                      h_port_reg;     /* hub port register */
  66
  67         u8                      is_ready;       /* safe to modify hw_ep */
  68         u8                      type;           /* XFERTYPE_* */
  69         u8                      epnum;
  70         u8                      hb_mult;        /* high bandwidth pkts per uf */
  71         u16                     maxpacket;
  72         u16                     frame;          /* for periodic schedule */
  73         unsigned                iso_idx;        /* in urb->iso_frame_desc[] */
  74 };
  75
  76 /* map from control or bulk queue head to the first qh on that ring */
  77 static inline struct musb_qh *first_qh(struct list_head *q)
  78 {
  79         if (list_empty(q))
  80                 return NULL;
  81         return list_entry(q->next, struct musb_qh, ring);
  82 }
  83
  84
  85 extern void musb_root_disconnect(struct musb *musb);
  86
  87 struct usb_hcd;
  88
  89 extern int musb_hub_status_data(struct usb_hcd *hcd, char *buf);
  90 extern int musb_hub_control(struct usb_hcd *hcd,
  91                         u16 typeReq, u16 wValue, u16 wIndex,
  92                         char *buf, u16 wLength);
  93
  94 extern const struct hc_driver musb_hc_driver;
  95
  96 static inline struct urb *next_urb(struct musb_qh *qh)
  97 {
  98         struct list_head        *queue;
  99
 100         if (!qh)
 101                 return NULL;
 102         queue = &qh->hep->urb_list;
 103         if (list_empty(queue))
 104                 return NULL;
 105         return list_entry(queue->next, struct urb, urb_list);
 106 }
 107
 108 #endif                          /* _MUSB_HOST_H */