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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/hid/usbhid/usbhid.h
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 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 int usbhid_get_power(struct hid_device
*hid
);
41 void usbhid_put_power(struct hid_device
*hid
);
42 struct usb_interface
*usbhid_find_interface(int minor
);
45 #define HID_CTRL_RUNNING 1
46 #define HID_OUT_RUNNING 2
47 #define HID_IN_RUNNING 3
48 #define HID_RESET_PENDING 4
49 #define HID_SUSPENDED 5
50 #define HID_CLEAR_HALT 6
51 #define HID_DISCONNECTED 7
53 #define HID_KEYS_PRESSED 10
54 #define HID_NO_BANDWIDTH 11
55 #define HID_RESUME_RUNNING 12
58 * USB-specific HID struct, to be pointed to
59 * from struct hid_device->driver_data
62 struct usbhid_device
{
63 struct hid_device
*hid
; /* pointer to corresponding HID dev */
65 struct usb_interface
*intf
; /* USB interface */
66 int ifnum
; /* USB interface number */
68 unsigned int bufsize
; /* URB buffer size */
70 struct urb
*urbin
; /* Input URB */
71 char *inbuf
; /* Input buffer */
72 dma_addr_t inbuf_dma
; /* Input buffer dma */
74 struct urb
*urbctrl
; /* Control URB */
75 struct usb_ctrlrequest
*cr
; /* Control request struct */
76 struct hid_control_fifo ctrl
[HID_CONTROL_FIFO_SIZE
]; /* Control fifo */
77 unsigned char ctrlhead
, ctrltail
; /* Control fifo head & tail */
78 char *ctrlbuf
; /* Control buffer */
79 dma_addr_t ctrlbuf_dma
; /* Control buffer dma */
80 unsigned long last_ctrl
; /* record of last output for timeouts */
82 struct urb
*urbout
; /* Output URB */
83 struct hid_output_fifo out
[HID_CONTROL_FIFO_SIZE
]; /* Output pipe fifo */
84 unsigned char outhead
, outtail
; /* Output pipe fifo head & tail */
85 char *outbuf
; /* Output buffer */
86 dma_addr_t outbuf_dma
; /* Output buffer dma */
87 unsigned long last_out
; /* record of last output for timeouts */
89 spinlock_t lock
; /* fifo spinlock */
90 unsigned long iofl
; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
91 struct timer_list io_retry
; /* Retry timer */
92 unsigned long stop_retry
; /* Time to give up, in jiffies */
93 unsigned int retry_delay
; /* Delay length in ms */
94 struct work_struct reset_work
; /* Task context for resets */
95 wait_queue_head_t wait
; /* For sleeping */
98 #define hid_to_usb_dev(hid_dev) \
99 to_usb_device(hid_dev->dev.parent->parent)