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/mutex.h>
31 #include <linux/timer.h>
32 #include <linux/wait.h>
33 #include <linux/workqueue.h>
34 #include <linux/input.h>
36 /* API provided by hid-core.c for USB HID drivers */
37 int usbhid_wait_io(struct hid_device
* hid
);
38 void usbhid_close(struct hid_device
*hid
);
39 int usbhid_open(struct hid_device
*hid
);
40 void usbhid_init_reports(struct hid_device
*hid
);
41 void usbhid_submit_report(struct hid_device
*hid
, struct hid_report
*report
, unsigned char dir
);
44 #define HID_CTRL_RUNNING 1
45 #define HID_OUT_RUNNING 2
46 #define HID_IN_RUNNING 3
47 #define HID_RESET_PENDING 4
48 #define HID_SUSPENDED 5
49 #define HID_CLEAR_HALT 6
50 #define HID_DISCONNECTED 7
54 * USB-specific HID struct, to be pointed to
55 * from struct hid_device->driver_data
58 struct usbhid_device
{
59 struct hid_device
*hid
; /* pointer to corresponding HID dev */
61 struct usb_interface
*intf
; /* USB interface */
62 int ifnum
; /* USB interface number */
64 unsigned int bufsize
; /* URB buffer size */
66 struct urb
*urbin
; /* Input URB */
67 char *inbuf
; /* Input buffer */
68 dma_addr_t inbuf_dma
; /* Input buffer dma */
69 spinlock_t inlock
; /* Input fifo spinlock */
71 struct urb
*urbctrl
; /* Control URB */
72 struct usb_ctrlrequest
*cr
; /* Control request struct */
73 dma_addr_t cr_dma
; /* Control request struct dma */
74 struct hid_control_fifo ctrl
[HID_CONTROL_FIFO_SIZE
]; /* Control fifo */
75 unsigned char ctrlhead
, ctrltail
; /* Control fifo head & tail */
76 char *ctrlbuf
; /* Control buffer */
77 dma_addr_t ctrlbuf_dma
; /* Control buffer dma */
78 spinlock_t ctrllock
; /* Control fifo spinlock */
80 struct urb
*urbout
; /* Output URB */
81 struct hid_output_fifo out
[HID_CONTROL_FIFO_SIZE
]; /* Output pipe fifo */
82 unsigned char outhead
, outtail
; /* Output pipe fifo head & tail */
83 char *outbuf
; /* Output buffer */
84 dma_addr_t outbuf_dma
; /* Output buffer dma */
85 spinlock_t outlock
; /* Output fifo spinlock */
87 unsigned long iofl
; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
88 struct timer_list io_retry
; /* Retry timer */
89 unsigned long stop_retry
; /* Time to give up, in jiffies */
90 unsigned int retry_delay
; /* Delay length in ms */
91 struct work_struct reset_work
; /* Task context for resets */
92 wait_queue_head_t wait
; /* For sleeping */
95 #define hid_to_usb_dev(hid_dev) \
96 container_of(hid_dev->dev.parent->parent, struct usb_device, dev)