Line data Source code
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/mutex.h>
31 : #include <linux/timer.h>
32 : #include <linux/wait.h>
33 : #include <linux/workqueue.h>
34 : #include <linux/input.h>
35 :
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
42 : (struct hid_device *hid, struct hid_report *report, unsigned char dir);
43 : int usbhid_get_power(struct hid_device *hid);
44 : void usbhid_put_power(struct hid_device *hid);
45 1 :
46 : /* iofl flags */
47 : #define HID_CTRL_RUNNING 1
48 : #define HID_OUT_RUNNING 2
49 : #define HID_IN_RUNNING 3
50 : #define HID_RESET_PENDING 4
51 : #define HID_SUSPENDED 5
52 : #define HID_CLEAR_HALT 6
53 : #define HID_DISCONNECTED 7
54 : #define HID_STARTED 8
55 : #define HID_REPORTED_IDLE 9
56 : #define HID_KEYS_PRESSED 10
57 : #define HID_LED_ON 11
58 :
59 : /*
60 : * USB-specific HID struct, to be pointed to
61 : * from struct hid_device->driver_data
62 : */
63 :
64 : struct usbhid_device {
65 : struct hid_device *hid; /* pointer to corresponding HID dev */
66 :
67 : struct usb_interface *intf; /* USB interface */
68 : int ifnum; /* USB interface number */
69 :
70 : unsigned int bufsize; /* URB buffer size */
71 :
72 : struct urb *urbin; /* Input URB */
73 : char *inbuf; /* Input buffer */
74 : dma_addr_t inbuf_dma; /* Input buffer dma */
75 :
76 : struct urb *urbctrl; /* Control URB */
77 : struct usb_ctrlrequest *cr; /* Control request struct */
78 : dma_addr_t cr_dma; /* Control request struct dma */
79 : struct hid_control_fifo ctrl[HID_CONTROL_FIFO_SIZE]; /* Control fifo */
80 : unsigned char ctrlhead, ctrltail; /* Control fifo head & tail */
81 : char *ctrlbuf; /* Control buffer */
82 : dma_addr_t ctrlbuf_dma; /* Control buffer dma */
83 : unsigned long last_ctrl; /* record of last output for timeouts */
84 :
85 : struct urb *urbout; /* Output URB */
86 : struct hid_output_fifo out[HID_CONTROL_FIFO_SIZE]; /* Output pipe fifo */
87 : unsigned char outhead, outtail; /* Output pipe fifo head & tail */
88 : char *outbuf; /* Output buffer */
89 : dma_addr_t outbuf_dma; /* Output buffer dma */
90 : unsigned long last_out; /* record of last output for timeouts */
91 :
92 : spinlock_t lock; /* fifo spinlock */
93 : unsigned long iofl; /* I/O flags (CTRL_RUNNING, OUT_RUNNING) */
94 : struct timer_list io_retry; /* Retry timer */
95 : unsigned long stop_retry; /* Time to give up, in jiffies */
96 : unsigned int retry_delay; /* Delay length in ms */
97 : struct work_struct reset_work; /* Task context for resets */
98 : struct work_struct restart_work; /* waking up for output to be done in a task */
99 : wait_queue_head_t wait; /* For sleeping */
100 : int ledcount; /* counting the number of active leds */
101 : };
102 :
103 : #define hid_to_usb_dev(hid_dev) \
104 : container_of(hid_dev->dev.parent->parent, struct usb_device, dev)
105 :
106 : #endif
107 :
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