5 * Copyright (c) 1999 Andreas Gal
6 * Copyright (c) 2000-2001 Vojtech Pavlik
7 * Copyright (c) 2006 Jiri Kosina
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.
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.
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
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>
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
);
43 * USB-specific HID struct, to be pointed to
44 * from struct hid_device->driver_data
47 struct usbhid_device
{
48 struct hid_device
*hid
; /* pointer to corresponding HID dev */
50 struct usb_interface
*intf
; /* USB interface */
51 int ifnum
; /* USB interface number */
53 unsigned int bufsize
; /* URB buffer size */
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 */
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 */
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 */
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 */
84 #define hid_to_usb_dev(hid_dev) \
85 container_of(hid_dev->dev->parent, struct usb_device, dev)