2 * USB HID support for Linux
4 * Copyright (c) 1999 Andreas Gal
5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7 * Copyright (c) 2007-2008 Oliver Neukum
8 * Copyright (c) 2006-2009 Jiri Kosina
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the Free
14 * Software Foundation; either version 2 of the License, or (at your option)
18 #include <linux/module.h>
19 #include <linux/slab.h>
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/list.h>
24 #include <linux/mutex.h>
25 #include <linux/spinlock.h>
26 #include <asm/unaligned.h>
27 #include <asm/byteorder.h>
28 #include <linux/input.h>
29 #include <linux/wait.h>
30 #include <linux/workqueue.h>
32 #include <linux/usb.h>
34 #include <linux/hid.h>
35 #include <linux/hiddev.h>
36 #include <linux/hid-debug.h>
37 #include <linux/hidraw.h>
44 #define DRIVER_VERSION "v2.6"
45 #define DRIVER_DESC "USB HID core driver"
46 #define DRIVER_LICENSE "GPL"
52 static unsigned int hid_mousepoll_interval
;
53 module_param_named(mousepoll
, hid_mousepoll_interval
, uint
, 0644);
54 MODULE_PARM_DESC(mousepoll
, "Polling interval of mice");
56 static unsigned int ignoreled
;
57 module_param_named(ignoreled
, ignoreled
, uint
, 0644);
58 MODULE_PARM_DESC(ignoreled
, "Autosuspend with active leds");
60 /* Quirks specified at module load time */
61 static char *quirks_param
[MAX_USBHID_BOOT_QUIRKS
] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS
- 1) ] = NULL
};
62 module_param_array_named(quirks
, quirks_param
, charp
, NULL
, 0444);
63 MODULE_PARM_DESC(quirks
, "Add/modify USB HID quirks by specifying "
64 " quirks=vendorID:productID:quirks"
65 " where vendorID, productID, and quirks are all in"
68 * Input submission and I/O error handler.
70 static DEFINE_MUTEX(hid_open_mut
);
71 static struct workqueue_struct
*resumption_waker
;
73 static void hid_io_error(struct hid_device
*hid
);
74 static int hid_submit_out(struct hid_device
*hid
);
75 static int hid_submit_ctrl(struct hid_device
*hid
);
76 static void hid_cancel_delayed_stuff(struct usbhid_device
*usbhid
);
78 /* Start up the input URB */
79 static int hid_start_in(struct hid_device
*hid
)
83 struct usbhid_device
*usbhid
= hid
->driver_data
;
85 spin_lock_irqsave(&usbhid
->lock
, flags
);
87 !test_bit(HID_DISCONNECTED
, &usbhid
->iofl
) &&
88 !test_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
) &&
89 !test_and_set_bit(HID_IN_RUNNING
, &usbhid
->iofl
)) {
90 rc
= usb_submit_urb(usbhid
->urbin
, GFP_ATOMIC
);
92 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
94 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
98 /* I/O retry timer routine */
99 static void hid_retry_timeout(unsigned long _hid
)
101 struct hid_device
*hid
= (struct hid_device
*) _hid
;
102 struct usbhid_device
*usbhid
= hid
->driver_data
;
104 dev_dbg(&usbhid
->intf
->dev
, "retrying intr urb\n");
105 if (hid_start_in(hid
))
109 /* Workqueue routine to reset the device or clear a halt */
110 static void hid_reset(struct work_struct
*work
)
112 struct usbhid_device
*usbhid
=
113 container_of(work
, struct usbhid_device
, reset_work
);
114 struct hid_device
*hid
= usbhid
->hid
;
117 if (test_bit(HID_CLEAR_HALT
, &usbhid
->iofl
)) {
118 dev_dbg(&usbhid
->intf
->dev
, "clear halt\n");
119 rc
= usb_clear_halt(hid_to_usb_dev(hid
), usbhid
->urbin
->pipe
);
120 clear_bit(HID_CLEAR_HALT
, &usbhid
->iofl
);
124 else if (test_bit(HID_RESET_PENDING
, &usbhid
->iofl
)) {
125 dev_dbg(&usbhid
->intf
->dev
, "resetting device\n");
126 rc
= usb_lock_device_for_reset(hid_to_usb_dev(hid
), usbhid
->intf
);
128 rc
= usb_reset_device(hid_to_usb_dev(hid
));
129 usb_unlock_device(hid_to_usb_dev(hid
));
131 clear_bit(HID_RESET_PENDING
, &usbhid
->iofl
);
136 if (!test_bit(HID_IN_RUNNING
, &usbhid
->iofl
))
140 err_hid("can't reset device, %s-%s/input%d, status %d",
141 hid_to_usb_dev(hid
)->bus
->bus_name
,
142 hid_to_usb_dev(hid
)->devpath
,
152 /* Main I/O error handler */
153 static void hid_io_error(struct hid_device
*hid
)
156 struct usbhid_device
*usbhid
= hid
->driver_data
;
158 spin_lock_irqsave(&usbhid
->lock
, flags
);
160 /* Stop when disconnected */
161 if (test_bit(HID_DISCONNECTED
, &usbhid
->iofl
))
164 /* If it has been a while since the last error, we'll assume
165 * this a brand new error and reset the retry timeout. */
166 if (time_after(jiffies
, usbhid
->stop_retry
+ HZ
/2))
167 usbhid
->retry_delay
= 0;
169 /* When an error occurs, retry at increasing intervals */
170 if (usbhid
->retry_delay
== 0) {
171 usbhid
->retry_delay
= 13; /* Then 26, 52, 104, 104, ... */
172 usbhid
->stop_retry
= jiffies
+ msecs_to_jiffies(1000);
173 } else if (usbhid
->retry_delay
< 100)
174 usbhid
->retry_delay
*= 2;
176 if (time_after(jiffies
, usbhid
->stop_retry
)) {
178 /* Retries failed, so do a port reset */
179 if (!test_and_set_bit(HID_RESET_PENDING
, &usbhid
->iofl
)) {
180 schedule_work(&usbhid
->reset_work
);
185 mod_timer(&usbhid
->io_retry
,
186 jiffies
+ msecs_to_jiffies(usbhid
->retry_delay
));
188 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
191 static void usbhid_mark_busy(struct usbhid_device
*usbhid
)
193 struct usb_interface
*intf
= usbhid
->intf
;
195 usb_mark_last_busy(interface_to_usbdev(intf
));
198 static int usbhid_restart_out_queue(struct usbhid_device
*usbhid
)
200 struct hid_device
*hid
= usb_get_intfdata(usbhid
->intf
);
206 if ((kicked
= (usbhid
->outhead
!= usbhid
->outtail
))) {
207 dbg("Kicking head %d tail %d", usbhid
->outhead
, usbhid
->outtail
);
208 if (hid_submit_out(hid
)) {
209 clear_bit(HID_OUT_RUNNING
, &usbhid
->iofl
);
210 wake_up(&usbhid
->wait
);
216 static int usbhid_restart_ctrl_queue(struct usbhid_device
*usbhid
)
218 struct hid_device
*hid
= usb_get_intfdata(usbhid
->intf
);
221 WARN_ON(hid
== NULL
);
225 if ((kicked
= (usbhid
->ctrlhead
!= usbhid
->ctrltail
))) {
226 dbg("Kicking head %d tail %d", usbhid
->ctrlhead
, usbhid
->ctrltail
);
227 if (hid_submit_ctrl(hid
)) {
228 clear_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
);
229 wake_up(&usbhid
->wait
);
236 * Input interrupt completion handler.
239 static void hid_irq_in(struct urb
*urb
)
241 struct hid_device
*hid
= urb
->context
;
242 struct usbhid_device
*usbhid
= hid
->driver_data
;
245 switch (urb
->status
) {
246 case 0: /* success */
247 usbhid_mark_busy(usbhid
);
248 usbhid
->retry_delay
= 0;
249 hid_input_report(urb
->context
, HID_INPUT_REPORT
,
250 urb
->transfer_buffer
,
251 urb
->actual_length
, 1);
253 * autosuspend refused while keys are pressed
254 * because most keyboards don't wake up when
257 if (hid_check_keys_pressed(hid
))
258 set_bit(HID_KEYS_PRESSED
, &usbhid
->iofl
);
260 clear_bit(HID_KEYS_PRESSED
, &usbhid
->iofl
);
262 case -EPIPE
: /* stall */
263 usbhid_mark_busy(usbhid
);
264 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
265 set_bit(HID_CLEAR_HALT
, &usbhid
->iofl
);
266 schedule_work(&usbhid
->reset_work
);
268 case -ECONNRESET
: /* unlink */
270 case -ESHUTDOWN
: /* unplug */
271 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
273 case -EILSEQ
: /* protocol error or unplug */
274 case -EPROTO
: /* protocol error or unplug */
275 case -ETIME
: /* protocol error or unplug */
276 case -ETIMEDOUT
: /* Should never happen, but... */
277 usbhid_mark_busy(usbhid
);
278 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
282 dev_warn(&urb
->dev
->dev
, "input irq status %d "
283 "received\n", urb
->status
);
286 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
288 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
289 if (status
!= -EPERM
) {
290 err_hid("can't resubmit intr, %s-%s/input%d, status %d",
291 hid_to_usb_dev(hid
)->bus
->bus_name
,
292 hid_to_usb_dev(hid
)->devpath
,
293 usbhid
->ifnum
, status
);
299 static int hid_submit_out(struct hid_device
*hid
)
301 struct hid_report
*report
;
303 struct usbhid_device
*usbhid
= hid
->driver_data
;
305 report
= usbhid
->out
[usbhid
->outtail
].report
;
306 raw_report
= usbhid
->out
[usbhid
->outtail
].raw_report
;
308 if (!test_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
)) {
309 usbhid
->urbout
->transfer_buffer_length
= ((report
->size
- 1) >> 3) + 1 + (report
->id
> 0);
310 usbhid
->urbout
->dev
= hid_to_usb_dev(hid
);
311 memcpy(usbhid
->outbuf
, raw_report
, usbhid
->urbout
->transfer_buffer_length
);
314 dbg_hid("submitting out urb\n");
316 if (usb_submit_urb(usbhid
->urbout
, GFP_ATOMIC
)) {
317 err_hid("usb_submit_urb(out) failed");
322 * queue work to wake up the device.
323 * as the work queue is freezeable, this is safe
324 * with respect to STD and STR
326 queue_work(resumption_waker
, &usbhid
->restart_work
);
332 static int hid_submit_ctrl(struct hid_device
*hid
)
334 struct hid_report
*report
;
338 struct usbhid_device
*usbhid
= hid
->driver_data
;
340 report
= usbhid
->ctrl
[usbhid
->ctrltail
].report
;
341 raw_report
= usbhid
->ctrl
[usbhid
->ctrltail
].raw_report
;
342 dir
= usbhid
->ctrl
[usbhid
->ctrltail
].dir
;
344 if (!test_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
)) {
345 len
= ((report
->size
- 1) >> 3) + 1 + (report
->id
> 0);
346 if (dir
== USB_DIR_OUT
) {
347 usbhid
->urbctrl
->pipe
= usb_sndctrlpipe(hid_to_usb_dev(hid
), 0);
348 usbhid
->urbctrl
->transfer_buffer_length
= len
;
349 memcpy(usbhid
->ctrlbuf
, raw_report
, len
);
352 int maxpacket
, padlen
;
354 usbhid
->urbctrl
->pipe
= usb_rcvctrlpipe(hid_to_usb_dev(hid
), 0);
355 maxpacket
= usb_maxpacket(hid_to_usb_dev(hid
), usbhid
->urbctrl
->pipe
, 0);
357 padlen
= DIV_ROUND_UP(len
, maxpacket
);
359 if (padlen
> usbhid
->bufsize
)
360 padlen
= usbhid
->bufsize
;
363 usbhid
->urbctrl
->transfer_buffer_length
= padlen
;
365 usbhid
->urbctrl
->dev
= hid_to_usb_dev(hid
);
367 usbhid
->cr
->bRequestType
= USB_TYPE_CLASS
| USB_RECIP_INTERFACE
| dir
;
368 usbhid
->cr
->bRequest
= (dir
== USB_DIR_OUT
) ? HID_REQ_SET_REPORT
: HID_REQ_GET_REPORT
;
369 usbhid
->cr
->wValue
= cpu_to_le16(((report
->type
+ 1) << 8) | report
->id
);
370 usbhid
->cr
->wIndex
= cpu_to_le16(usbhid
->ifnum
);
371 usbhid
->cr
->wLength
= cpu_to_le16(len
);
373 dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n",
374 usbhid
->cr
->bRequest
== HID_REQ_SET_REPORT
? "Set_Report" : "Get_Report",
375 usbhid
->cr
->wValue
, usbhid
->cr
->wIndex
, usbhid
->cr
->wLength
);
377 if (usb_submit_urb(usbhid
->urbctrl
, GFP_ATOMIC
)) {
378 err_hid("usb_submit_urb(ctrl) failed");
383 * queue work to wake up the device.
384 * as the work queue is freezeable, this is safe
385 * with respect to STD and STR
387 queue_work(resumption_waker
, &usbhid
->restart_work
);
394 * Output interrupt completion handler.
397 static void hid_irq_out(struct urb
*urb
)
399 struct hid_device
*hid
= urb
->context
;
400 struct usbhid_device
*usbhid
= hid
->driver_data
;
404 switch (urb
->status
) {
405 case 0: /* success */
407 case -ESHUTDOWN
: /* unplug */
409 case -EILSEQ
: /* protocol error or unplug */
410 case -EPROTO
: /* protocol error or unplug */
411 case -ECONNRESET
: /* unlink */
415 dev_warn(&urb
->dev
->dev
, "output irq status %d "
416 "received\n", urb
->status
);
419 spin_lock_irqsave(&usbhid
->lock
, flags
);
422 usbhid
->outtail
= usbhid
->outhead
;
424 usbhid
->outtail
= (usbhid
->outtail
+ 1) & (HID_OUTPUT_FIFO_SIZE
- 1);
426 if (usbhid
->outhead
!= usbhid
->outtail
) {
427 if (hid_submit_out(hid
)) {
428 clear_bit(HID_OUT_RUNNING
, &usbhid
->iofl
);
429 wake_up(&usbhid
->wait
);
431 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
435 clear_bit(HID_OUT_RUNNING
, &usbhid
->iofl
);
436 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
437 wake_up(&usbhid
->wait
);
441 * Control pipe completion handler.
444 static void hid_ctrl(struct urb
*urb
)
446 struct hid_device
*hid
= urb
->context
;
447 struct usbhid_device
*usbhid
= hid
->driver_data
;
448 int unplug
= 0, status
= urb
->status
;
450 spin_lock(&usbhid
->lock
);
453 case 0: /* success */
454 if (usbhid
->ctrl
[usbhid
->ctrltail
].dir
== USB_DIR_IN
)
455 hid_input_report(urb
->context
,
456 usbhid
->ctrl
[usbhid
->ctrltail
].report
->type
,
457 urb
->transfer_buffer
, urb
->actual_length
, 0);
459 case -ESHUTDOWN
: /* unplug */
461 case -EILSEQ
: /* protocol error or unplug */
462 case -EPROTO
: /* protocol error or unplug */
463 case -ECONNRESET
: /* unlink */
465 case -EPIPE
: /* report not available */
468 dev_warn(&urb
->dev
->dev
, "ctrl urb status %d "
469 "received\n", status
);
473 usbhid
->ctrltail
= usbhid
->ctrlhead
;
475 usbhid
->ctrltail
= (usbhid
->ctrltail
+ 1) & (HID_CONTROL_FIFO_SIZE
- 1);
477 if (usbhid
->ctrlhead
!= usbhid
->ctrltail
) {
478 if (hid_submit_ctrl(hid
)) {
479 clear_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
);
480 wake_up(&usbhid
->wait
);
482 spin_unlock(&usbhid
->lock
);
486 clear_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
);
487 spin_unlock(&usbhid
->lock
);
488 wake_up(&usbhid
->wait
);
491 static void __usbhid_submit_report(struct hid_device
*hid
, struct hid_report
*report
,
495 struct usbhid_device
*usbhid
= hid
->driver_data
;
496 int len
= ((report
->size
- 1) >> 3) + 1 + (report
->id
> 0);
498 if ((hid
->quirks
& HID_QUIRK_NOGET
) && dir
== USB_DIR_IN
)
501 if (usbhid
->urbout
&& dir
== USB_DIR_OUT
&& report
->type
== HID_OUTPUT_REPORT
) {
502 if ((head
= (usbhid
->outhead
+ 1) & (HID_OUTPUT_FIFO_SIZE
- 1)) == usbhid
->outtail
) {
503 dev_warn(&hid
->dev
, "output queue full\n");
507 usbhid
->out
[usbhid
->outhead
].raw_report
= kmalloc(len
, GFP_ATOMIC
);
508 if (!usbhid
->out
[usbhid
->outhead
].raw_report
) {
509 dev_warn(&hid
->dev
, "output queueing failed\n");
512 hid_output_report(report
, usbhid
->out
[usbhid
->outhead
].raw_report
);
513 usbhid
->out
[usbhid
->outhead
].report
= report
;
514 usbhid
->outhead
= head
;
516 if (!test_and_set_bit(HID_OUT_RUNNING
, &usbhid
->iofl
))
517 if (hid_submit_out(hid
))
518 clear_bit(HID_OUT_RUNNING
, &usbhid
->iofl
);
522 if ((head
= (usbhid
->ctrlhead
+ 1) & (HID_CONTROL_FIFO_SIZE
- 1)) == usbhid
->ctrltail
) {
523 dev_warn(&hid
->dev
, "control queue full\n");
527 if (dir
== USB_DIR_OUT
) {
528 usbhid
->ctrl
[usbhid
->ctrlhead
].raw_report
= kmalloc(len
, GFP_ATOMIC
);
529 if (!usbhid
->ctrl
[usbhid
->ctrlhead
].raw_report
) {
530 dev_warn(&hid
->dev
, "control queueing failed\n");
533 hid_output_report(report
, usbhid
->ctrl
[usbhid
->ctrlhead
].raw_report
);
535 usbhid
->ctrl
[usbhid
->ctrlhead
].report
= report
;
536 usbhid
->ctrl
[usbhid
->ctrlhead
].dir
= dir
;
537 usbhid
->ctrlhead
= head
;
539 if (!test_and_set_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
))
540 if (hid_submit_ctrl(hid
))
541 clear_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
);
544 void usbhid_submit_report(struct hid_device
*hid
, struct hid_report
*report
, unsigned char dir
)
546 struct usbhid_device
*usbhid
= hid
->driver_data
;
549 spin_lock_irqsave(&usbhid
->lock
, flags
);
550 __usbhid_submit_report(hid
, report
, dir
);
551 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
553 EXPORT_SYMBOL_GPL(usbhid_submit_report
);
555 static int usb_hidinput_input_event(struct input_dev
*dev
, unsigned int type
, unsigned int code
, int value
)
557 struct hid_device
*hid
= input_get_drvdata(dev
);
558 struct usbhid_device
*usbhid
= hid
->driver_data
;
559 struct hid_field
*field
;
564 return input_ff_event(dev
, type
, code
, value
);
569 if ((offset
= hidinput_find_field(hid
, type
, code
, &field
)) == -1) {
570 dev_warn(&dev
->dev
, "event field not found\n");
574 hid_set_field(field
, offset
, value
);
576 spin_lock_irqsave(&usbhid
->lock
, flags
);
578 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
580 spin_lock_irqsave(&usbhid
->lock
, flags
);
582 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
584 usbhid_submit_report(hid
, field
->report
, USB_DIR_OUT
);
589 int usbhid_wait_io(struct hid_device
*hid
)
591 struct usbhid_device
*usbhid
= hid
->driver_data
;
593 if (!wait_event_timeout(usbhid
->wait
,
594 (!test_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
) &&
595 !test_bit(HID_OUT_RUNNING
, &usbhid
->iofl
)),
597 dbg_hid("timeout waiting for ctrl or out queue to clear\n");
604 static int hid_set_idle(struct usb_device
*dev
, int ifnum
, int report
, int idle
)
606 return usb_control_msg(dev
, usb_sndctrlpipe(dev
, 0),
607 HID_REQ_SET_IDLE
, USB_TYPE_CLASS
| USB_RECIP_INTERFACE
, (idle
<< 8) | report
,
608 ifnum
, NULL
, 0, USB_CTRL_SET_TIMEOUT
);
611 static int hid_get_class_descriptor(struct usb_device
*dev
, int ifnum
,
612 unsigned char type
, void *buf
, int size
)
614 int result
, retries
= 4;
616 memset(buf
, 0, size
);
619 result
= usb_control_msg(dev
, usb_rcvctrlpipe(dev
, 0),
620 USB_REQ_GET_DESCRIPTOR
, USB_RECIP_INTERFACE
| USB_DIR_IN
,
621 (type
<< 8), ifnum
, buf
, size
, USB_CTRL_GET_TIMEOUT
);
623 } while (result
< size
&& retries
);
627 int usbhid_open(struct hid_device
*hid
)
629 struct usbhid_device
*usbhid
= hid
->driver_data
;
632 mutex_lock(&hid_open_mut
);
634 res
= usb_autopm_get_interface(usbhid
->intf
);
635 /* the device must be awake to reliable request remote wakeup */
638 mutex_unlock(&hid_open_mut
);
641 usbhid
->intf
->needs_remote_wakeup
= 1;
642 if (hid_start_in(hid
))
645 usb_autopm_put_interface(usbhid
->intf
);
647 mutex_unlock(&hid_open_mut
);
651 void usbhid_close(struct hid_device
*hid
)
653 struct usbhid_device
*usbhid
= hid
->driver_data
;
655 mutex_lock(&hid_open_mut
);
657 /* protecting hid->open to make sure we don't restart
658 * data acquistion due to a resumption we no longer
661 spin_lock_irq(&usbhid
->lock
);
663 spin_unlock_irq(&usbhid
->lock
);
664 hid_cancel_delayed_stuff(usbhid
);
665 usb_kill_urb(usbhid
->urbin
);
666 usbhid
->intf
->needs_remote_wakeup
= 0;
668 spin_unlock_irq(&usbhid
->lock
);
670 mutex_unlock(&hid_open_mut
);
674 * Initialize all reports
677 void usbhid_init_reports(struct hid_device
*hid
)
679 struct hid_report
*report
;
680 struct usbhid_device
*usbhid
= hid
->driver_data
;
683 list_for_each_entry(report
, &hid
->report_enum
[HID_INPUT_REPORT
].report_list
, list
)
684 usbhid_submit_report(hid
, report
, USB_DIR_IN
);
686 list_for_each_entry(report
, &hid
->report_enum
[HID_FEATURE_REPORT
].report_list
, list
)
687 usbhid_submit_report(hid
, report
, USB_DIR_IN
);
690 ret
= usbhid_wait_io(hid
);
693 if (test_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
))
694 usb_kill_urb(usbhid
->urbctrl
);
695 if (test_bit(HID_OUT_RUNNING
, &usbhid
->iofl
))
696 usb_kill_urb(usbhid
->urbout
);
697 ret
= usbhid_wait_io(hid
);
701 dev_warn(&hid
->dev
, "timeout initializing reports\n");
705 * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01).
707 static int hid_find_field_early(struct hid_device
*hid
, unsigned int page
,
708 unsigned int hid_code
, struct hid_field
**pfield
)
710 struct hid_report
*report
;
711 struct hid_field
*field
;
712 struct hid_usage
*usage
;
715 list_for_each_entry(report
, &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
, list
) {
716 for (i
= 0; i
< report
->maxfield
; i
++) {
717 field
= report
->field
[i
];
718 for (j
= 0; j
< field
->maxusage
; j
++) {
719 usage
= &field
->usage
[j
];
720 if ((usage
->hid
& HID_USAGE_PAGE
) == page
&&
721 (usage
->hid
& 0xFFFF) == hid_code
) {
731 void usbhid_set_leds(struct hid_device
*hid
)
733 struct hid_field
*field
;
736 if ((offset
= hid_find_field_early(hid
, HID_UP_LED
, 0x01, &field
)) != -1) {
737 hid_set_field(field
, offset
, 0);
738 usbhid_submit_report(hid
, field
->report
, USB_DIR_OUT
);
741 EXPORT_SYMBOL_GPL(usbhid_set_leds
);
744 * Traverse the supplied list of reports and find the longest
746 static void hid_find_max_report(struct hid_device
*hid
, unsigned int type
,
749 struct hid_report
*report
;
752 list_for_each_entry(report
, &hid
->report_enum
[type
].report_list
, list
) {
753 size
= ((report
->size
- 1) >> 3) + 1 + hid
->report_enum
[type
].numbered
;
759 static int hid_alloc_buffers(struct usb_device
*dev
, struct hid_device
*hid
)
761 struct usbhid_device
*usbhid
= hid
->driver_data
;
763 usbhid
->inbuf
= usb_buffer_alloc(dev
, usbhid
->bufsize
, GFP_KERNEL
,
765 usbhid
->outbuf
= usb_buffer_alloc(dev
, usbhid
->bufsize
, GFP_KERNEL
,
766 &usbhid
->outbuf_dma
);
767 usbhid
->cr
= usb_buffer_alloc(dev
, sizeof(*usbhid
->cr
), GFP_KERNEL
,
769 usbhid
->ctrlbuf
= usb_buffer_alloc(dev
, usbhid
->bufsize
, GFP_KERNEL
,
770 &usbhid
->ctrlbuf_dma
);
771 if (!usbhid
->inbuf
|| !usbhid
->outbuf
|| !usbhid
->cr
||
778 static int usbhid_output_raw_report(struct hid_device
*hid
, __u8
*buf
, size_t count
)
780 struct usbhid_device
*usbhid
= hid
->driver_data
;
781 struct usb_device
*dev
= hid_to_usb_dev(hid
);
782 struct usb_interface
*intf
= usbhid
->intf
;
783 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
786 ret
= usb_control_msg(dev
, usb_sndctrlpipe(dev
, 0),
788 USB_DIR_OUT
| USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
789 ((HID_OUTPUT_REPORT
+ 1) << 8) | *buf
,
790 interface
->desc
.bInterfaceNumber
, buf
+ 1, count
- 1,
791 USB_CTRL_SET_TIMEOUT
);
793 /* count also the report id */
800 static void usbhid_restart_queues(struct usbhid_device
*usbhid
)
803 usbhid_restart_out_queue(usbhid
);
804 usbhid_restart_ctrl_queue(usbhid
);
807 static void __usbhid_restart_queues(struct work_struct
*work
)
809 struct usbhid_device
*usbhid
=
810 container_of(work
, struct usbhid_device
, restart_work
);
813 r
= usb_autopm_get_interface(usbhid
->intf
);
816 usb_autopm_put_interface(usbhid
->intf
);
819 static void hid_free_buffers(struct usb_device
*dev
, struct hid_device
*hid
)
821 struct usbhid_device
*usbhid
= hid
->driver_data
;
823 usb_buffer_free(dev
, usbhid
->bufsize
, usbhid
->inbuf
, usbhid
->inbuf_dma
);
824 usb_buffer_free(dev
, usbhid
->bufsize
, usbhid
->outbuf
, usbhid
->outbuf_dma
);
825 usb_buffer_free(dev
, sizeof(*(usbhid
->cr
)), usbhid
->cr
, usbhid
->cr_dma
);
826 usb_buffer_free(dev
, usbhid
->bufsize
, usbhid
->ctrlbuf
, usbhid
->ctrlbuf_dma
);
829 static int usbhid_parse(struct hid_device
*hid
)
831 struct usb_interface
*intf
= to_usb_interface(hid
->dev
.parent
);
832 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
833 struct usb_device
*dev
= interface_to_usbdev (intf
);
834 struct hid_descriptor
*hdesc
;
836 unsigned int rsize
= 0;
840 quirks
= usbhid_lookup_quirk(le16_to_cpu(dev
->descriptor
.idVendor
),
841 le16_to_cpu(dev
->descriptor
.idProduct
));
843 if (quirks
& HID_QUIRK_IGNORE
)
846 /* Many keyboards and mice don't like to be polled for reports,
847 * so we will always set the HID_QUIRK_NOGET flag for them. */
848 if (interface
->desc
.bInterfaceSubClass
== USB_INTERFACE_SUBCLASS_BOOT
) {
849 if (interface
->desc
.bInterfaceProtocol
== USB_INTERFACE_PROTOCOL_KEYBOARD
||
850 interface
->desc
.bInterfaceProtocol
== USB_INTERFACE_PROTOCOL_MOUSE
)
851 quirks
|= HID_QUIRK_NOGET
;
854 if (usb_get_extra_descriptor(interface
, HID_DT_HID
, &hdesc
) &&
855 (!interface
->desc
.bNumEndpoints
||
856 usb_get_extra_descriptor(&interface
->endpoint
[0], HID_DT_HID
, &hdesc
))) {
857 dbg_hid("class descriptor not present\n");
861 hid
->version
= le16_to_cpu(hdesc
->bcdHID
);
862 hid
->country
= hdesc
->bCountryCode
;
864 for (n
= 0; n
< hdesc
->bNumDescriptors
; n
++)
865 if (hdesc
->desc
[n
].bDescriptorType
== HID_DT_REPORT
)
866 rsize
= le16_to_cpu(hdesc
->desc
[n
].wDescriptorLength
);
868 if (!rsize
|| rsize
> HID_MAX_DESCRIPTOR_SIZE
) {
869 dbg_hid("weird size of report descriptor (%u)\n", rsize
);
873 if (!(rdesc
= kmalloc(rsize
, GFP_KERNEL
))) {
874 dbg_hid("couldn't allocate rdesc memory\n");
878 hid_set_idle(dev
, interface
->desc
.bInterfaceNumber
, 0, 0);
880 ret
= hid_get_class_descriptor(dev
, interface
->desc
.bInterfaceNumber
,
881 HID_DT_REPORT
, rdesc
, rsize
);
883 dbg_hid("reading report descriptor failed\n");
888 ret
= hid_parse_report(hid
, rdesc
, rsize
);
891 dbg_hid("parsing report descriptor failed\n");
895 hid
->quirks
|= quirks
;
902 static int usbhid_start(struct hid_device
*hid
)
904 struct usb_interface
*intf
= to_usb_interface(hid
->dev
.parent
);
905 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
906 struct usb_device
*dev
= interface_to_usbdev(intf
);
907 struct usbhid_device
*usbhid
= hid
->driver_data
;
908 unsigned int n
, insize
= 0;
911 clear_bit(HID_DISCONNECTED
, &usbhid
->iofl
);
913 usbhid
->bufsize
= HID_MIN_BUFFER_SIZE
;
914 hid_find_max_report(hid
, HID_INPUT_REPORT
, &usbhid
->bufsize
);
915 hid_find_max_report(hid
, HID_OUTPUT_REPORT
, &usbhid
->bufsize
);
916 hid_find_max_report(hid
, HID_FEATURE_REPORT
, &usbhid
->bufsize
);
918 if (usbhid
->bufsize
> HID_MAX_BUFFER_SIZE
)
919 usbhid
->bufsize
= HID_MAX_BUFFER_SIZE
;
921 hid_find_max_report(hid
, HID_INPUT_REPORT
, &insize
);
923 if (insize
> HID_MAX_BUFFER_SIZE
)
924 insize
= HID_MAX_BUFFER_SIZE
;
926 if (hid_alloc_buffers(dev
, hid
)) {
931 for (n
= 0; n
< interface
->desc
.bNumEndpoints
; n
++) {
932 struct usb_endpoint_descriptor
*endpoint
;
936 endpoint
= &interface
->endpoint
[n
].desc
;
937 if (!usb_endpoint_xfer_int(endpoint
))
940 interval
= endpoint
->bInterval
;
942 /* Some vendors give fullspeed interval on highspeed devides */
943 if (hid
->quirks
& HID_QUIRK_FULLSPEED_INTERVAL
&&
944 dev
->speed
== USB_SPEED_HIGH
) {
945 interval
= fls(endpoint
->bInterval
*8);
946 printk(KERN_INFO
"%s: Fixing fullspeed to highspeed interval: %d -> %d\n",
947 hid
->name
, endpoint
->bInterval
, interval
);
950 /* Change the polling interval of mice. */
951 if (hid
->collection
->usage
== HID_GD_MOUSE
&& hid_mousepoll_interval
> 0)
952 interval
= hid_mousepoll_interval
;
955 if (usb_endpoint_dir_in(endpoint
)) {
958 if (!(usbhid
->urbin
= usb_alloc_urb(0, GFP_KERNEL
)))
960 pipe
= usb_rcvintpipe(dev
, endpoint
->bEndpointAddress
);
961 usb_fill_int_urb(usbhid
->urbin
, dev
, pipe
, usbhid
->inbuf
, insize
,
962 hid_irq_in
, hid
, interval
);
963 usbhid
->urbin
->transfer_dma
= usbhid
->inbuf_dma
;
964 usbhid
->urbin
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
968 if (!(usbhid
->urbout
= usb_alloc_urb(0, GFP_KERNEL
)))
970 pipe
= usb_sndintpipe(dev
, endpoint
->bEndpointAddress
);
971 usb_fill_int_urb(usbhid
->urbout
, dev
, pipe
, usbhid
->outbuf
, 0,
972 hid_irq_out
, hid
, interval
);
973 usbhid
->urbout
->transfer_dma
= usbhid
->outbuf_dma
;
974 usbhid
->urbout
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
978 init_waitqueue_head(&usbhid
->wait
);
979 INIT_WORK(&usbhid
->reset_work
, hid_reset
);
980 INIT_WORK(&usbhid
->restart_work
, __usbhid_restart_queues
);
981 setup_timer(&usbhid
->io_retry
, hid_retry_timeout
, (unsigned long) hid
);
983 spin_lock_init(&usbhid
->lock
);
986 usbhid
->ifnum
= interface
->desc
.bInterfaceNumber
;
988 usbhid
->urbctrl
= usb_alloc_urb(0, GFP_KERNEL
);
989 if (!usbhid
->urbctrl
) {
994 usb_fill_control_urb(usbhid
->urbctrl
, dev
, 0, (void *) usbhid
->cr
,
995 usbhid
->ctrlbuf
, 1, hid_ctrl
, hid
);
996 usbhid
->urbctrl
->setup_dma
= usbhid
->cr_dma
;
997 usbhid
->urbctrl
->transfer_dma
= usbhid
->ctrlbuf_dma
;
998 usbhid
->urbctrl
->transfer_flags
|= (URB_NO_TRANSFER_DMA_MAP
| URB_NO_SETUP_DMA_MAP
);
1000 usbhid_init_reports(hid
);
1002 set_bit(HID_STARTED
, &usbhid
->iofl
);
1004 /* Some keyboards don't work until their LEDs have been set.
1005 * Since BIOSes do set the LEDs, it must be safe for any device
1006 * that supports the keyboard boot protocol.
1008 if (interface
->desc
.bInterfaceSubClass
== USB_INTERFACE_SUBCLASS_BOOT
&&
1009 interface
->desc
.bInterfaceProtocol
==
1010 USB_INTERFACE_PROTOCOL_KEYBOARD
)
1011 usbhid_set_leds(hid
);
1016 usb_free_urb(usbhid
->urbin
);
1017 usb_free_urb(usbhid
->urbout
);
1018 usb_free_urb(usbhid
->urbctrl
);
1019 usbhid
->urbin
= NULL
;
1020 usbhid
->urbout
= NULL
;
1021 usbhid
->urbctrl
= NULL
;
1022 hid_free_buffers(dev
, hid
);
1026 static void usbhid_stop(struct hid_device
*hid
)
1028 struct usbhid_device
*usbhid
= hid
->driver_data
;
1030 if (WARN_ON(!usbhid
))
1033 clear_bit(HID_STARTED
, &usbhid
->iofl
);
1034 spin_lock_irq(&usbhid
->lock
); /* Sync with error handler */
1035 set_bit(HID_DISCONNECTED
, &usbhid
->iofl
);
1036 spin_unlock_irq(&usbhid
->lock
);
1037 usb_kill_urb(usbhid
->urbin
);
1038 usb_kill_urb(usbhid
->urbout
);
1039 usb_kill_urb(usbhid
->urbctrl
);
1041 hid_cancel_delayed_stuff(usbhid
);
1045 usb_free_urb(usbhid
->urbin
);
1046 usb_free_urb(usbhid
->urbctrl
);
1047 usb_free_urb(usbhid
->urbout
);
1048 usbhid
->urbin
= NULL
; /* don't mess up next start */
1049 usbhid
->urbctrl
= NULL
;
1050 usbhid
->urbout
= NULL
;
1052 hid_free_buffers(hid_to_usb_dev(hid
), hid
);
1055 static int usbhid_power(struct hid_device
*hid
, int lvl
)
1060 case PM_HINT_FULLON
:
1061 r
= usbhid_get_power(hid
);
1063 case PM_HINT_NORMAL
:
1064 usbhid_put_power(hid
);
1070 static struct hid_ll_driver usb_hid_driver
= {
1071 .parse
= usbhid_parse
,
1072 .start
= usbhid_start
,
1073 .stop
= usbhid_stop
,
1074 .open
= usbhid_open
,
1075 .close
= usbhid_close
,
1076 .power
= usbhid_power
,
1077 .hidinput_input_event
= usb_hidinput_input_event
,
1080 static int usbhid_probe(struct usb_interface
*intf
, const struct usb_device_id
*id
)
1082 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
1083 struct usb_device
*dev
= interface_to_usbdev(intf
);
1084 struct usbhid_device
*usbhid
;
1085 struct hid_device
*hid
;
1086 unsigned int n
, has_in
= 0;
1090 dbg_hid("HID probe called for ifnum %d\n",
1091 intf
->altsetting
->desc
.bInterfaceNumber
);
1093 for (n
= 0; n
< interface
->desc
.bNumEndpoints
; n
++)
1094 if (usb_endpoint_is_int_in(&interface
->endpoint
[n
].desc
))
1097 dev_err(&intf
->dev
, "couldn't find an input interrupt "
1102 hid
= hid_allocate_device();
1104 return PTR_ERR(hid
);
1106 usb_set_intfdata(intf
, hid
);
1107 hid
->ll_driver
= &usb_hid_driver
;
1108 hid
->hid_output_raw_report
= usbhid_output_raw_report
;
1109 hid
->ff_init
= hid_pidff_init
;
1110 #ifdef CONFIG_USB_HIDDEV
1111 hid
->hiddev_connect
= hiddev_connect
;
1112 hid
->hiddev_disconnect
= hiddev_disconnect
;
1113 hid
->hiddev_hid_event
= hiddev_hid_event
;
1114 hid
->hiddev_report_event
= hiddev_report_event
;
1116 hid
->dev
.parent
= &intf
->dev
;
1118 hid
->vendor
= le16_to_cpu(dev
->descriptor
.idVendor
);
1119 hid
->product
= le16_to_cpu(dev
->descriptor
.idProduct
);
1121 if (intf
->cur_altsetting
->desc
.bInterfaceProtocol
==
1122 USB_INTERFACE_PROTOCOL_MOUSE
)
1123 hid
->type
= HID_TYPE_USBMOUSE
;
1125 if (dev
->manufacturer
)
1126 strlcpy(hid
->name
, dev
->manufacturer
, sizeof(hid
->name
));
1129 if (dev
->manufacturer
)
1130 strlcat(hid
->name
, " ", sizeof(hid
->name
));
1131 strlcat(hid
->name
, dev
->product
, sizeof(hid
->name
));
1134 if (!strlen(hid
->name
))
1135 snprintf(hid
->name
, sizeof(hid
->name
), "HID %04x:%04x",
1136 le16_to_cpu(dev
->descriptor
.idVendor
),
1137 le16_to_cpu(dev
->descriptor
.idProduct
));
1139 usb_make_path(dev
, hid
->phys
, sizeof(hid
->phys
));
1140 strlcat(hid
->phys
, "/input", sizeof(hid
->phys
));
1141 len
= strlen(hid
->phys
);
1142 if (len
< sizeof(hid
->phys
) - 1)
1143 snprintf(hid
->phys
+ len
, sizeof(hid
->phys
) - len
,
1144 "%d", intf
->altsetting
[0].desc
.bInterfaceNumber
);
1146 if (usb_string(dev
, dev
->descriptor
.iSerialNumber
, hid
->uniq
, 64) <= 0)
1149 usbhid
= kzalloc(sizeof(*usbhid
), GFP_KERNEL
);
1150 if (usbhid
== NULL
) {
1155 hid
->driver_data
= usbhid
;
1158 ret
= hid_add_device(hid
);
1161 dev_err(&intf
->dev
, "can't add hid device: %d\n", ret
);
1169 hid_destroy_device(hid
);
1173 static void usbhid_disconnect(struct usb_interface
*intf
)
1175 struct hid_device
*hid
= usb_get_intfdata(intf
);
1176 struct usbhid_device
*usbhid
;
1181 usbhid
= hid
->driver_data
;
1182 hid_destroy_device(hid
);
1186 static void hid_cancel_delayed_stuff(struct usbhid_device
*usbhid
)
1188 del_timer_sync(&usbhid
->io_retry
);
1189 cancel_work_sync(&usbhid
->restart_work
);
1190 cancel_work_sync(&usbhid
->reset_work
);
1193 static void hid_cease_io(struct usbhid_device
*usbhid
)
1195 del_timer(&usbhid
->io_retry
);
1196 usb_kill_urb(usbhid
->urbin
);
1197 usb_kill_urb(usbhid
->urbctrl
);
1198 usb_kill_urb(usbhid
->urbout
);
1201 /* Treat USB reset pretty much the same as suspend/resume */
1202 static int hid_pre_reset(struct usb_interface
*intf
)
1204 struct hid_device
*hid
= usb_get_intfdata(intf
);
1205 struct usbhid_device
*usbhid
= hid
->driver_data
;
1207 spin_lock_irq(&usbhid
->lock
);
1208 set_bit(HID_RESET_PENDING
, &usbhid
->iofl
);
1209 spin_unlock_irq(&usbhid
->lock
);
1210 cancel_work_sync(&usbhid
->restart_work
);
1211 hid_cease_io(usbhid
);
1216 /* Same routine used for post_reset and reset_resume */
1217 static int hid_post_reset(struct usb_interface
*intf
)
1219 struct usb_device
*dev
= interface_to_usbdev (intf
);
1220 struct hid_device
*hid
= usb_get_intfdata(intf
);
1221 struct usbhid_device
*usbhid
= hid
->driver_data
;
1224 spin_lock_irq(&usbhid
->lock
);
1225 clear_bit(HID_RESET_PENDING
, &usbhid
->iofl
);
1226 spin_unlock_irq(&usbhid
->lock
);
1227 hid_set_idle(dev
, intf
->cur_altsetting
->desc
.bInterfaceNumber
, 0, 0);
1228 status
= hid_start_in(hid
);
1231 usbhid_restart_queues(usbhid
);
1236 int usbhid_get_power(struct hid_device
*hid
)
1238 struct usbhid_device
*usbhid
= hid
->driver_data
;
1240 return usb_autopm_get_interface(usbhid
->intf
);
1243 void usbhid_put_power(struct hid_device
*hid
)
1245 struct usbhid_device
*usbhid
= hid
->driver_data
;
1247 usb_autopm_put_interface(usbhid
->intf
);
1252 static int hid_suspend(struct usb_interface
*intf
, pm_message_t message
)
1254 struct hid_device
*hid
= usb_get_intfdata(intf
);
1255 struct usbhid_device
*usbhid
= hid
->driver_data
;
1256 struct usb_device
*udev
= interface_to_usbdev(intf
);
1259 if (udev
->auto_pm
) {
1260 spin_lock_irq(&usbhid
->lock
); /* Sync with error handler */
1261 if (!test_bit(HID_RESET_PENDING
, &usbhid
->iofl
)
1262 && !test_bit(HID_CLEAR_HALT
, &usbhid
->iofl
)
1263 && !test_bit(HID_OUT_RUNNING
, &usbhid
->iofl
)
1264 && !test_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
)
1265 && !test_bit(HID_KEYS_PRESSED
, &usbhid
->iofl
)
1266 && (!usbhid
->ledcount
|| ignoreled
))
1268 set_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
);
1269 spin_unlock_irq(&usbhid
->lock
);
1271 usbhid_mark_busy(usbhid
);
1272 spin_unlock_irq(&usbhid
->lock
);
1277 spin_lock_irq(&usbhid
->lock
);
1278 set_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
);
1279 spin_unlock_irq(&usbhid
->lock
);
1280 if (usbhid_wait_io(hid
) < 0)
1284 if (!ignoreled
&& udev
->auto_pm
) {
1285 spin_lock_irq(&usbhid
->lock
);
1286 if (test_bit(HID_LED_ON
, &usbhid
->iofl
)) {
1287 spin_unlock_irq(&usbhid
->lock
);
1288 usbhid_mark_busy(usbhid
);
1291 spin_unlock_irq(&usbhid
->lock
);
1294 hid_cancel_delayed_stuff(usbhid
);
1295 hid_cease_io(usbhid
);
1297 if (udev
->auto_pm
&& test_bit(HID_KEYS_PRESSED
, &usbhid
->iofl
)) {
1298 /* lost race against keypresses */
1299 status
= hid_start_in(hid
);
1302 usbhid_mark_busy(usbhid
);
1305 dev_dbg(&intf
->dev
, "suspend\n");
1309 static int hid_resume(struct usb_interface
*intf
)
1311 struct hid_device
*hid
= usb_get_intfdata (intf
);
1312 struct usbhid_device
*usbhid
= hid
->driver_data
;
1315 if (!test_bit(HID_STARTED
, &usbhid
->iofl
))
1318 clear_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
);
1319 usbhid_mark_busy(usbhid
);
1321 if (test_bit(HID_CLEAR_HALT
, &usbhid
->iofl
) ||
1322 test_bit(HID_RESET_PENDING
, &usbhid
->iofl
))
1323 schedule_work(&usbhid
->reset_work
);
1324 usbhid
->retry_delay
= 0;
1325 status
= hid_start_in(hid
);
1328 usbhid_restart_queues(usbhid
);
1330 dev_dbg(&intf
->dev
, "resume status %d\n", status
);
1334 static int hid_reset_resume(struct usb_interface
*intf
)
1336 struct hid_device
*hid
= usb_get_intfdata(intf
);
1337 struct usbhid_device
*usbhid
= hid
->driver_data
;
1339 clear_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
);
1340 return hid_post_reset(intf
);
1343 #endif /* CONFIG_PM */
1345 static struct usb_device_id hid_usb_ids
[] = {
1346 { .match_flags
= USB_DEVICE_ID_MATCH_INT_CLASS
,
1347 .bInterfaceClass
= USB_INTERFACE_CLASS_HID
},
1348 { } /* Terminating entry */
1351 MODULE_DEVICE_TABLE (usb
, hid_usb_ids
);
1353 static struct usb_driver hid_driver
= {
1355 .probe
= usbhid_probe
,
1356 .disconnect
= usbhid_disconnect
,
1358 .suspend
= hid_suspend
,
1359 .resume
= hid_resume
,
1360 .reset_resume
= hid_reset_resume
,
1362 .pre_reset
= hid_pre_reset
,
1363 .post_reset
= hid_post_reset
,
1364 .id_table
= hid_usb_ids
,
1365 .supports_autosuspend
= 1,
1368 static const struct hid_device_id hid_usb_table
[] = {
1369 { HID_USB_DEVICE(HID_ANY_ID
, HID_ANY_ID
) },
1373 static struct hid_driver hid_usb_driver
= {
1374 .name
= "generic-usb",
1375 .id_table
= hid_usb_table
,
1378 static int __init
hid_init(void)
1380 int retval
= -ENOMEM
;
1382 resumption_waker
= create_freezeable_workqueue("usbhid_resumer");
1383 if (!resumption_waker
)
1385 retval
= hid_register_driver(&hid_usb_driver
);
1387 goto hid_register_fail
;
1388 retval
= usbhid_quirks_init(quirks_param
);
1390 goto usbhid_quirks_init_fail
;
1391 retval
= hiddev_init();
1393 goto hiddev_init_fail
;
1394 retval
= usb_register(&hid_driver
);
1396 goto usb_register_fail
;
1397 printk(KERN_INFO KBUILD_MODNAME
": " DRIVER_VERSION
":"
1404 usbhid_quirks_exit();
1405 usbhid_quirks_init_fail
:
1406 hid_unregister_driver(&hid_usb_driver
);
1408 destroy_workqueue(resumption_waker
);
1413 static void __exit
hid_exit(void)
1415 usb_deregister(&hid_driver
);
1417 usbhid_quirks_exit();
1418 hid_unregister_driver(&hid_usb_driver
);
1419 destroy_workqueue(resumption_waker
);
1422 module_init(hid_init
);
1423 module_exit(hid_exit
);
1425 MODULE_AUTHOR("Andreas Gal");
1426 MODULE_AUTHOR("Vojtech Pavlik");
1427 MODULE_AUTHOR("Jiri Kosina");
1428 MODULE_DESCRIPTION(DRIVER_DESC
);
1429 MODULE_LICENSE(DRIVER_LICENSE
);