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/workqueue.h>
32 #include <linux/input.h>
33
34 /* API provided by hid-core.c for USB HID drivers */
35 int usbhid_wait_io(struct hid_device* hid);
36 void usbhid_close(struct hid_device *hid);
37 int usbhid_open(struct hid_device *hid);
38 void usbhid_init_reports(struct hid_device *hid);
39 void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir);
40
41 /*
42 * USB-specific HID struct, to be pointed to
43 * from struct hid_device->driver_data
44 */
45
46 struct usbhid_device {
47 struct hid_device *hid; /* pointer to corresponding HID dev */
48
49 struct usb_interface *intf; /* USB interface */
50 int ifnum; /* USB interface number */
51
52 unsigned int bufsize; /* URB buffer size */
53
54 struct urb *urbin; /* Input URB */
55 char *inbuf; /* Input buffer */
56 dma_addr_t inbuf_dma; /* Input buffer dma */
57 spinlock_t inlock; /* Input fifo spinlock */
58
59 struct urb *urbctrl; /* Control URB */
60 struct usb_ctrlrequest *cr; /* Control request struct */
61 dma_addr_t cr_dma; /* Control request struct dma */
62 struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE]; /* Control fifo */
63 unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */
64 char *ctrlbuf; /* Control buffer */
65 dma_addr_t ctrlbuf_dma; /* Control buffer dma */
66 spinlock_t ctrllock; /* Control fifo spinlock */
67
68 struct urb *urbout; /* Output URB */
69 struct hid_report *out[HID_CONTROL_FIFO_SIZE]; /* Output pipe fifo */
70 unsigned char outhead, outtail; /* Output pipe fifo head & tail */
71 char *outbuf; /* Output buffer */
72 dma_addr_t outbuf_dma; /* Output buffer dma */
73 spinlock_t outlock; /* Output fifo spinlock */
74
75 unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
76 struct timer_list io_retry; /* Retry timer */
77 unsigned long stop_retry; /* Time to give up, in jiffies */
78 unsigned int retry_delay; /* Delay length in ms */
79 struct work_struct reset_work; /* Task context for resets */
80
81 };
82
83 #define hid_to_usb_dev(hid_dev) \
84 container_of(hid_dev->dev->parent, struct usb_device, dev)
85
86 #endif
87
88
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