HID: make a bus from hid code
[linux-2.6.git] / drivers / hid / usbhid / usbhid.h
1 #ifndef __USBHID_H
2 #define __USBHID_H
3
4 /*
5  *  Copyright (c) 1999 Andreas Gal
6  *  Copyright (c) 2000-2001 Vojtech Pavlik
7  *  Copyright (c) 2006 Jiri Kosina
8  */
9
10 /*
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 2 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24  *
25  */
26
27 #include <linux/types.h>
28 #include <linux/slab.h>
29 #include <linux/list.h>
30 #include <linux/timer.h>
31 #include <linux/wait.h>
32 #include <linux/workqueue.h>
33 #include <linux/input.h>
34
35 /*  API provided by hid-core.c for USB HID drivers */
36 int usbhid_wait_io(struct hid_device* hid);
37 void usbhid_close(struct hid_device *hid);
38 int usbhid_open(struct hid_device *hid);
39 void usbhid_init_reports(struct hid_device *hid);
40 void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir);
41
42 /*
43  * USB-specific HID struct, to be pointed to
44  * from struct hid_device->driver_data
45  */
46
47 struct usbhid_device {
48         struct hid_device *hid;                                         /* pointer to corresponding HID dev */
49
50         struct usb_interface *intf;                                     /* USB interface */
51         int ifnum;                                                      /* USB interface number */
52
53         unsigned int bufsize;                                           /* URB buffer size */
54
55         struct urb *urbin;                                              /* Input URB */
56         char *inbuf;                                                    /* Input buffer */
57         dma_addr_t inbuf_dma;                                           /* Input buffer dma */
58         spinlock_t inlock;                                              /* Input fifo spinlock */
59
60         struct urb *urbctrl;                                            /* Control URB */
61         struct usb_ctrlrequest *cr;                                     /* Control request struct */
62         dma_addr_t cr_dma;                                              /* Control request struct dma */
63         struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE];            /* Control fifo */
64         unsigned char ctrlhead, ctrltail;                               /* Control fifo head & tail */
65         char *ctrlbuf;                                                  /* Control buffer */
66         dma_addr_t ctrlbuf_dma;                                         /* Control buffer dma */
67         spinlock_t ctrllock;                                            /* Control fifo spinlock */
68
69         struct urb *urbout;                                             /* Output URB */
70         struct hid_report *out[HID_CONTROL_FIFO_SIZE];                  /* Output pipe fifo */
71         unsigned char outhead, outtail;                                 /* Output pipe fifo head & tail */
72         char *outbuf;                                                   /* Output buffer */
73         dma_addr_t outbuf_dma;                                          /* Output buffer dma */
74         spinlock_t outlock;                                             /* Output fifo spinlock */
75
76         unsigned long iofl;                                             /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
77         struct timer_list io_retry;                                     /* Retry timer */
78         unsigned long stop_retry;                                       /* Time to give up, in jiffies */
79         unsigned int retry_delay;                                       /* Delay length in ms */
80         struct work_struct reset_work;                                  /* Task context for resets */
81         wait_queue_head_t wait;                                         /* For sleeping */
82 };
83
84 #define hid_to_usb_dev(hid_dev) \
85         container_of(hid_dev->dev.parent->parent, struct usb_device, dev)
86
87 #endif
88