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/smp_lock.h>
26 #include <linux/spinlock.h>
27 #include <asm/unaligned.h>
28 #include <asm/byteorder.h>
29 #include <linux/input.h>
30 #include <linux/wait.h>
31 #include <linux/workqueue.h>
33 #include <linux/usb.h>
35 #include <linux/hid.h>
36 #include <linux/hiddev.h>
37 #include <linux/hid-debug.h>
38 #include <linux/hidraw.h>
45 #define DRIVER_VERSION "v2.6"
46 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina"
47 #define DRIVER_DESC "USB HID core driver"
48 #define DRIVER_LICENSE "GPL"
54 static unsigned int hid_mousepoll_interval
;
55 module_param_named(mousepoll
, hid_mousepoll_interval
, uint
, 0644);
56 MODULE_PARM_DESC(mousepoll
, "Polling interval of mice");
58 static unsigned int ignoreled
;
59 module_param_named(ignoreled
, ignoreled
, uint
, 0644);
60 MODULE_PARM_DESC(ignoreled
, "Autosuspend with active leds");
62 /* Quirks specified at module load time */
63 static char *quirks_param
[MAX_USBHID_BOOT_QUIRKS
] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS
- 1) ] = NULL
};
64 module_param_array_named(quirks
, quirks_param
, charp
, NULL
, 0444);
65 MODULE_PARM_DESC(quirks
, "Add/modify USB HID quirks by specifying "
66 " quirks=vendorID:productID:quirks"
67 " where vendorID, productID, and quirks are all in"
70 * Input submission and I/O error handler.
72 static DEFINE_MUTEX(hid_open_mut
);
73 static struct workqueue_struct
*resumption_waker
;
75 static void hid_io_error(struct hid_device
*hid
);
76 static int hid_submit_out(struct hid_device
*hid
);
77 static int hid_submit_ctrl(struct hid_device
*hid
);
78 static void hid_cancel_delayed_stuff(struct usbhid_device
*usbhid
);
80 /* Start up the input URB */
81 static int hid_start_in(struct hid_device
*hid
)
85 struct usbhid_device
*usbhid
= hid
->driver_data
;
87 spin_lock_irqsave(&usbhid
->lock
, flags
);
89 !test_bit(HID_DISCONNECTED
, &usbhid
->iofl
) &&
90 !test_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
) &&
91 !test_and_set_bit(HID_IN_RUNNING
, &usbhid
->iofl
)) {
92 rc
= usb_submit_urb(usbhid
->urbin
, GFP_ATOMIC
);
94 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
96 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
100 /* I/O retry timer routine */
101 static void hid_retry_timeout(unsigned long _hid
)
103 struct hid_device
*hid
= (struct hid_device
*) _hid
;
104 struct usbhid_device
*usbhid
= hid
->driver_data
;
106 dev_dbg(&usbhid
->intf
->dev
, "retrying intr urb\n");
107 if (hid_start_in(hid
))
111 /* Workqueue routine to reset the device or clear a halt */
112 static void hid_reset(struct work_struct
*work
)
114 struct usbhid_device
*usbhid
=
115 container_of(work
, struct usbhid_device
, reset_work
);
116 struct hid_device
*hid
= usbhid
->hid
;
119 if (test_bit(HID_CLEAR_HALT
, &usbhid
->iofl
)) {
120 dev_dbg(&usbhid
->intf
->dev
, "clear halt\n");
121 rc
= usb_clear_halt(hid_to_usb_dev(hid
), usbhid
->urbin
->pipe
);
122 clear_bit(HID_CLEAR_HALT
, &usbhid
->iofl
);
126 else if (test_bit(HID_RESET_PENDING
, &usbhid
->iofl
)) {
127 dev_dbg(&usbhid
->intf
->dev
, "resetting device\n");
128 rc
= usb_lock_device_for_reset(hid_to_usb_dev(hid
), usbhid
->intf
);
130 rc
= usb_reset_device(hid_to_usb_dev(hid
));
131 usb_unlock_device(hid_to_usb_dev(hid
));
133 clear_bit(HID_RESET_PENDING
, &usbhid
->iofl
);
138 if (!test_bit(HID_IN_RUNNING
, &usbhid
->iofl
))
142 err_hid("can't reset device, %s-%s/input%d, status %d",
143 hid_to_usb_dev(hid
)->bus
->bus_name
,
144 hid_to_usb_dev(hid
)->devpath
,
154 /* Main I/O error handler */
155 static void hid_io_error(struct hid_device
*hid
)
158 struct usbhid_device
*usbhid
= hid
->driver_data
;
160 spin_lock_irqsave(&usbhid
->lock
, flags
);
162 /* Stop when disconnected */
163 if (test_bit(HID_DISCONNECTED
, &usbhid
->iofl
))
166 /* If it has been a while since the last error, we'll assume
167 * this a brand new error and reset the retry timeout. */
168 if (time_after(jiffies
, usbhid
->stop_retry
+ HZ
/2))
169 usbhid
->retry_delay
= 0;
171 /* When an error occurs, retry at increasing intervals */
172 if (usbhid
->retry_delay
== 0) {
173 usbhid
->retry_delay
= 13; /* Then 26, 52, 104, 104, ... */
174 usbhid
->stop_retry
= jiffies
+ msecs_to_jiffies(1000);
175 } else if (usbhid
->retry_delay
< 100)
176 usbhid
->retry_delay
*= 2;
178 if (time_after(jiffies
, usbhid
->stop_retry
)) {
180 /* Retries failed, so do a port reset */
181 if (!test_and_set_bit(HID_RESET_PENDING
, &usbhid
->iofl
)) {
182 schedule_work(&usbhid
->reset_work
);
187 mod_timer(&usbhid
->io_retry
,
188 jiffies
+ msecs_to_jiffies(usbhid
->retry_delay
));
190 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
193 static void usbhid_mark_busy(struct usbhid_device
*usbhid
)
195 struct usb_interface
*intf
= usbhid
->intf
;
197 usb_mark_last_busy(interface_to_usbdev(intf
));
200 static int usbhid_restart_out_queue(struct usbhid_device
*usbhid
)
202 struct hid_device
*hid
= usb_get_intfdata(usbhid
->intf
);
208 if ((kicked
= (usbhid
->outhead
!= usbhid
->outtail
))) {
209 dbg("Kicking head %d tail %d", usbhid
->outhead
, usbhid
->outtail
);
210 if (hid_submit_out(hid
)) {
211 clear_bit(HID_OUT_RUNNING
, &usbhid
->iofl
);
212 wake_up(&usbhid
->wait
);
218 static int usbhid_restart_ctrl_queue(struct usbhid_device
*usbhid
)
220 struct hid_device
*hid
= usb_get_intfdata(usbhid
->intf
);
223 WARN_ON(hid
== NULL
);
227 if ((kicked
= (usbhid
->ctrlhead
!= usbhid
->ctrltail
))) {
228 dbg("Kicking head %d tail %d", usbhid
->ctrlhead
, usbhid
->ctrltail
);
229 if (hid_submit_ctrl(hid
)) {
230 clear_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
);
231 wake_up(&usbhid
->wait
);
238 * Input interrupt completion handler.
241 static void hid_irq_in(struct urb
*urb
)
243 struct hid_device
*hid
= urb
->context
;
244 struct usbhid_device
*usbhid
= hid
->driver_data
;
247 switch (urb
->status
) {
248 case 0: /* success */
249 usbhid_mark_busy(usbhid
);
250 usbhid
->retry_delay
= 0;
251 hid_input_report(urb
->context
, HID_INPUT_REPORT
,
252 urb
->transfer_buffer
,
253 urb
->actual_length
, 1);
255 * autosuspend refused while keys are pressed
256 * because most keyboards don't wake up when
259 if (hid_check_keys_pressed(hid
))
260 set_bit(HID_KEYS_PRESSED
, &usbhid
->iofl
);
262 clear_bit(HID_KEYS_PRESSED
, &usbhid
->iofl
);
264 case -EPIPE
: /* stall */
265 usbhid_mark_busy(usbhid
);
266 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
267 set_bit(HID_CLEAR_HALT
, &usbhid
->iofl
);
268 schedule_work(&usbhid
->reset_work
);
270 case -ECONNRESET
: /* unlink */
272 case -ESHUTDOWN
: /* unplug */
273 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
275 case -EILSEQ
: /* protocol error or unplug */
276 case -EPROTO
: /* protocol error or unplug */
277 case -ETIME
: /* protocol error or unplug */
278 case -ETIMEDOUT
: /* Should never happen, but... */
279 usbhid_mark_busy(usbhid
);
280 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
284 dev_warn(&urb
->dev
->dev
, "input irq status %d "
285 "received\n", urb
->status
);
288 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
290 clear_bit(HID_IN_RUNNING
, &usbhid
->iofl
);
291 if (status
!= -EPERM
) {
292 err_hid("can't resubmit intr, %s-%s/input%d, status %d",
293 hid_to_usb_dev(hid
)->bus
->bus_name
,
294 hid_to_usb_dev(hid
)->devpath
,
295 usbhid
->ifnum
, status
);
301 static int hid_submit_out(struct hid_device
*hid
)
303 struct hid_report
*report
;
305 struct usbhid_device
*usbhid
= hid
->driver_data
;
307 report
= usbhid
->out
[usbhid
->outtail
].report
;
308 raw_report
= usbhid
->out
[usbhid
->outtail
].raw_report
;
310 if (!test_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
)) {
311 usbhid
->urbout
->transfer_buffer_length
= ((report
->size
- 1) >> 3) + 1 + (report
->id
> 0);
312 usbhid
->urbout
->dev
= hid_to_usb_dev(hid
);
313 memcpy(usbhid
->outbuf
, raw_report
, usbhid
->urbout
->transfer_buffer_length
);
316 dbg_hid("submitting out urb\n");
318 if (usb_submit_urb(usbhid
->urbout
, GFP_ATOMIC
)) {
319 err_hid("usb_submit_urb(out) failed");
324 * queue work to wake up the device.
325 * as the work queue is freezeable, this is safe
326 * with respect to STD and STR
328 queue_work(resumption_waker
, &usbhid
->restart_work
);
334 static int hid_submit_ctrl(struct hid_device
*hid
)
336 struct hid_report
*report
;
340 struct usbhid_device
*usbhid
= hid
->driver_data
;
342 report
= usbhid
->ctrl
[usbhid
->ctrltail
].report
;
343 raw_report
= usbhid
->ctrl
[usbhid
->ctrltail
].raw_report
;
344 dir
= usbhid
->ctrl
[usbhid
->ctrltail
].dir
;
346 if (!test_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
)) {
347 len
= ((report
->size
- 1) >> 3) + 1 + (report
->id
> 0);
348 if (dir
== USB_DIR_OUT
) {
349 usbhid
->urbctrl
->pipe
= usb_sndctrlpipe(hid_to_usb_dev(hid
), 0);
350 usbhid
->urbctrl
->transfer_buffer_length
= len
;
351 memcpy(usbhid
->ctrlbuf
, raw_report
, len
);
354 int maxpacket
, padlen
;
356 usbhid
->urbctrl
->pipe
= usb_rcvctrlpipe(hid_to_usb_dev(hid
), 0);
357 maxpacket
= usb_maxpacket(hid_to_usb_dev(hid
), usbhid
->urbctrl
->pipe
, 0);
359 padlen
= DIV_ROUND_UP(len
, maxpacket
);
361 if (padlen
> usbhid
->bufsize
)
362 padlen
= usbhid
->bufsize
;
365 usbhid
->urbctrl
->transfer_buffer_length
= padlen
;
367 usbhid
->urbctrl
->dev
= hid_to_usb_dev(hid
);
369 usbhid
->cr
->bRequestType
= USB_TYPE_CLASS
| USB_RECIP_INTERFACE
| dir
;
370 usbhid
->cr
->bRequest
= (dir
== USB_DIR_OUT
) ? HID_REQ_SET_REPORT
: HID_REQ_GET_REPORT
;
371 usbhid
->cr
->wValue
= cpu_to_le16(((report
->type
+ 1) << 8) | report
->id
);
372 usbhid
->cr
->wIndex
= cpu_to_le16(usbhid
->ifnum
);
373 usbhid
->cr
->wLength
= cpu_to_le16(len
);
375 dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n",
376 usbhid
->cr
->bRequest
== HID_REQ_SET_REPORT
? "Set_Report" : "Get_Report",
377 usbhid
->cr
->wValue
, usbhid
->cr
->wIndex
, usbhid
->cr
->wLength
);
379 if (usb_submit_urb(usbhid
->urbctrl
, GFP_ATOMIC
)) {
380 err_hid("usb_submit_urb(ctrl) failed");
385 * queue work to wake up the device.
386 * as the work queue is freezeable, this is safe
387 * with respect to STD and STR
389 queue_work(resumption_waker
, &usbhid
->restart_work
);
396 * Output interrupt completion handler.
399 static void hid_irq_out(struct urb
*urb
)
401 struct hid_device
*hid
= urb
->context
;
402 struct usbhid_device
*usbhid
= hid
->driver_data
;
406 switch (urb
->status
) {
407 case 0: /* success */
409 case -ESHUTDOWN
: /* unplug */
411 case -EILSEQ
: /* protocol error or unplug */
412 case -EPROTO
: /* protocol error or unplug */
413 case -ECONNRESET
: /* unlink */
417 dev_warn(&urb
->dev
->dev
, "output irq status %d "
418 "received\n", urb
->status
);
421 spin_lock_irqsave(&usbhid
->lock
, flags
);
424 usbhid
->outtail
= usbhid
->outhead
;
426 usbhid
->outtail
= (usbhid
->outtail
+ 1) & (HID_OUTPUT_FIFO_SIZE
- 1);
428 if (usbhid
->outhead
!= usbhid
->outtail
) {
429 if (hid_submit_out(hid
)) {
430 clear_bit(HID_OUT_RUNNING
, &usbhid
->iofl
);
431 wake_up(&usbhid
->wait
);
433 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
437 clear_bit(HID_OUT_RUNNING
, &usbhid
->iofl
);
438 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
439 wake_up(&usbhid
->wait
);
443 * Control pipe completion handler.
446 static void hid_ctrl(struct urb
*urb
)
448 struct hid_device
*hid
= urb
->context
;
449 struct usbhid_device
*usbhid
= hid
->driver_data
;
450 int unplug
= 0, status
= urb
->status
;
452 spin_lock(&usbhid
->lock
);
455 case 0: /* success */
456 if (usbhid
->ctrl
[usbhid
->ctrltail
].dir
== USB_DIR_IN
)
457 hid_input_report(urb
->context
,
458 usbhid
->ctrl
[usbhid
->ctrltail
].report
->type
,
459 urb
->transfer_buffer
, urb
->actual_length
, 0);
461 case -ESHUTDOWN
: /* unplug */
463 case -EILSEQ
: /* protocol error or unplug */
464 case -EPROTO
: /* protocol error or unplug */
465 case -ECONNRESET
: /* unlink */
467 case -EPIPE
: /* report not available */
470 dev_warn(&urb
->dev
->dev
, "ctrl urb status %d "
471 "received\n", status
);
475 usbhid
->ctrltail
= usbhid
->ctrlhead
;
477 usbhid
->ctrltail
= (usbhid
->ctrltail
+ 1) & (HID_CONTROL_FIFO_SIZE
- 1);
479 if (usbhid
->ctrlhead
!= usbhid
->ctrltail
) {
480 if (hid_submit_ctrl(hid
)) {
481 clear_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
);
482 wake_up(&usbhid
->wait
);
484 spin_unlock(&usbhid
->lock
);
488 clear_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
);
489 spin_unlock(&usbhid
->lock
);
490 wake_up(&usbhid
->wait
);
493 void __usbhid_submit_report(struct hid_device
*hid
, struct hid_report
*report
, unsigned char dir
)
496 struct usbhid_device
*usbhid
= hid
->driver_data
;
497 int len
= ((report
->size
- 1) >> 3) + 1 + (report
->id
> 0);
499 if ((hid
->quirks
& HID_QUIRK_NOGET
) && dir
== USB_DIR_IN
)
502 if (usbhid
->urbout
&& dir
== USB_DIR_OUT
&& report
->type
== HID_OUTPUT_REPORT
) {
503 if ((head
= (usbhid
->outhead
+ 1) & (HID_OUTPUT_FIFO_SIZE
- 1)) == usbhid
->outtail
) {
504 dev_warn(&hid
->dev
, "output queue full\n");
508 usbhid
->out
[usbhid
->outhead
].raw_report
= kmalloc(len
, GFP_ATOMIC
);
509 if (!usbhid
->out
[usbhid
->outhead
].raw_report
) {
510 dev_warn(&hid
->dev
, "output queueing failed\n");
513 hid_output_report(report
, usbhid
->out
[usbhid
->outhead
].raw_report
);
514 usbhid
->out
[usbhid
->outhead
].report
= report
;
515 usbhid
->outhead
= head
;
517 if (!test_and_set_bit(HID_OUT_RUNNING
, &usbhid
->iofl
))
518 if (hid_submit_out(hid
))
519 clear_bit(HID_OUT_RUNNING
, &usbhid
->iofl
);
523 if ((head
= (usbhid
->ctrlhead
+ 1) & (HID_CONTROL_FIFO_SIZE
- 1)) == usbhid
->ctrltail
) {
524 dev_warn(&hid
->dev
, "control queue full\n");
528 if (dir
== USB_DIR_OUT
) {
529 usbhid
->ctrl
[usbhid
->ctrlhead
].raw_report
= kmalloc(len
, GFP_ATOMIC
);
530 if (!usbhid
->ctrl
[usbhid
->ctrlhead
].raw_report
) {
531 dev_warn(&hid
->dev
, "control queueing failed\n");
534 hid_output_report(report
, usbhid
->ctrl
[usbhid
->ctrlhead
].raw_report
);
536 usbhid
->ctrl
[usbhid
->ctrlhead
].report
= report
;
537 usbhid
->ctrl
[usbhid
->ctrlhead
].dir
= dir
;
538 usbhid
->ctrlhead
= head
;
540 if (!test_and_set_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
))
541 if (hid_submit_ctrl(hid
))
542 clear_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
);
545 void usbhid_submit_report(struct hid_device
*hid
, struct hid_report
*report
, unsigned char dir
)
547 struct usbhid_device
*usbhid
= hid
->driver_data
;
550 spin_lock_irqsave(&usbhid
->lock
, flags
);
551 __usbhid_submit_report(hid
, report
, dir
);
552 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
554 EXPORT_SYMBOL_GPL(usbhid_submit_report
);
556 static int usb_hidinput_input_event(struct input_dev
*dev
, unsigned int type
, unsigned int code
, int value
)
558 struct hid_device
*hid
= input_get_drvdata(dev
);
559 struct usbhid_device
*usbhid
= hid
->driver_data
;
560 struct hid_field
*field
;
565 return input_ff_event(dev
, type
, code
, value
);
570 if ((offset
= hidinput_find_field(hid
, type
, code
, &field
)) == -1) {
571 dev_warn(&dev
->dev
, "event field not found\n");
575 hid_set_field(field
, offset
, value
);
577 spin_lock_irqsave(&usbhid
->lock
, flags
);
579 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
581 spin_lock_irqsave(&usbhid
->lock
, flags
);
583 spin_unlock_irqrestore(&usbhid
->lock
, flags
);
585 usbhid_submit_report(hid
, field
->report
, USB_DIR_OUT
);
590 int usbhid_wait_io(struct hid_device
*hid
)
592 struct usbhid_device
*usbhid
= hid
->driver_data
;
594 if (!wait_event_timeout(usbhid
->wait
,
595 (!test_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
) &&
596 !test_bit(HID_OUT_RUNNING
, &usbhid
->iofl
)),
598 dbg_hid("timeout waiting for ctrl or out queue to clear\n");
605 static int hid_set_idle(struct usb_device
*dev
, int ifnum
, int report
, int idle
)
607 return usb_control_msg(dev
, usb_sndctrlpipe(dev
, 0),
608 HID_REQ_SET_IDLE
, USB_TYPE_CLASS
| USB_RECIP_INTERFACE
, (idle
<< 8) | report
,
609 ifnum
, NULL
, 0, USB_CTRL_SET_TIMEOUT
);
612 static int hid_get_class_descriptor(struct usb_device
*dev
, int ifnum
,
613 unsigned char type
, void *buf
, int size
)
615 int result
, retries
= 4;
617 memset(buf
, 0, size
);
620 result
= usb_control_msg(dev
, usb_rcvctrlpipe(dev
, 0),
621 USB_REQ_GET_DESCRIPTOR
, USB_RECIP_INTERFACE
| USB_DIR_IN
,
622 (type
<< 8), ifnum
, buf
, size
, USB_CTRL_GET_TIMEOUT
);
624 } while (result
< size
&& retries
);
628 int usbhid_open(struct hid_device
*hid
)
630 struct usbhid_device
*usbhid
= hid
->driver_data
;
633 mutex_lock(&hid_open_mut
);
635 res
= usb_autopm_get_interface(usbhid
->intf
);
636 /* the device must be awake to reliable request remote wakeup */
639 mutex_unlock(&hid_open_mut
);
642 usbhid
->intf
->needs_remote_wakeup
= 1;
643 if (hid_start_in(hid
))
646 usb_autopm_put_interface(usbhid
->intf
);
648 mutex_unlock(&hid_open_mut
);
652 void usbhid_close(struct hid_device
*hid
)
654 struct usbhid_device
*usbhid
= hid
->driver_data
;
656 mutex_lock(&hid_open_mut
);
658 /* protecting hid->open to make sure we don't restart
659 * data acquistion due to a resumption we no longer
662 spin_lock_irq(&usbhid
->lock
);
664 spin_unlock_irq(&usbhid
->lock
);
665 hid_cancel_delayed_stuff(usbhid
);
666 usb_kill_urb(usbhid
->urbin
);
667 usbhid
->intf
->needs_remote_wakeup
= 0;
669 spin_unlock_irq(&usbhid
->lock
);
671 mutex_unlock(&hid_open_mut
);
675 * Initialize all reports
678 void usbhid_init_reports(struct hid_device
*hid
)
680 struct hid_report
*report
;
681 struct usbhid_device
*usbhid
= hid
->driver_data
;
684 list_for_each_entry(report
, &hid
->report_enum
[HID_INPUT_REPORT
].report_list
, list
)
685 usbhid_submit_report(hid
, report
, USB_DIR_IN
);
687 list_for_each_entry(report
, &hid
->report_enum
[HID_FEATURE_REPORT
].report_list
, list
)
688 usbhid_submit_report(hid
, report
, USB_DIR_IN
);
691 ret
= usbhid_wait_io(hid
);
694 if (test_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
))
695 usb_kill_urb(usbhid
->urbctrl
);
696 if (test_bit(HID_OUT_RUNNING
, &usbhid
->iofl
))
697 usb_kill_urb(usbhid
->urbout
);
698 ret
= usbhid_wait_io(hid
);
702 dev_warn(&hid
->dev
, "timeout initializing reports\n");
706 * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01).
708 static int hid_find_field_early(struct hid_device
*hid
, unsigned int page
,
709 unsigned int hid_code
, struct hid_field
**pfield
)
711 struct hid_report
*report
;
712 struct hid_field
*field
;
713 struct hid_usage
*usage
;
716 list_for_each_entry(report
, &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
, list
) {
717 for (i
= 0; i
< report
->maxfield
; i
++) {
718 field
= report
->field
[i
];
719 for (j
= 0; j
< field
->maxusage
; j
++) {
720 usage
= &field
->usage
[j
];
721 if ((usage
->hid
& HID_USAGE_PAGE
) == page
&&
722 (usage
->hid
& 0xFFFF) == hid_code
) {
732 void usbhid_set_leds(struct hid_device
*hid
)
734 struct hid_field
*field
;
737 if ((offset
= hid_find_field_early(hid
, HID_UP_LED
, 0x01, &field
)) != -1) {
738 hid_set_field(field
, offset
, 0);
739 usbhid_submit_report(hid
, field
->report
, USB_DIR_OUT
);
742 EXPORT_SYMBOL_GPL(usbhid_set_leds
);
745 * Traverse the supplied list of reports and find the longest
747 static void hid_find_max_report(struct hid_device
*hid
, unsigned int type
,
750 struct hid_report
*report
;
753 list_for_each_entry(report
, &hid
->report_enum
[type
].report_list
, list
) {
754 size
= ((report
->size
- 1) >> 3) + 1 + hid
->report_enum
[type
].numbered
;
760 static int hid_alloc_buffers(struct usb_device
*dev
, struct hid_device
*hid
)
762 struct usbhid_device
*usbhid
= hid
->driver_data
;
764 usbhid
->inbuf
= usb_buffer_alloc(dev
, usbhid
->bufsize
, GFP_KERNEL
,
766 usbhid
->outbuf
= usb_buffer_alloc(dev
, usbhid
->bufsize
, GFP_KERNEL
,
767 &usbhid
->outbuf_dma
);
768 usbhid
->cr
= usb_buffer_alloc(dev
, sizeof(*usbhid
->cr
), GFP_KERNEL
,
770 usbhid
->ctrlbuf
= usb_buffer_alloc(dev
, usbhid
->bufsize
, GFP_KERNEL
,
771 &usbhid
->ctrlbuf_dma
);
772 if (!usbhid
->inbuf
|| !usbhid
->outbuf
|| !usbhid
->cr
||
779 static int usbhid_output_raw_report(struct hid_device
*hid
, __u8
*buf
, size_t count
)
781 struct usbhid_device
*usbhid
= hid
->driver_data
;
782 struct usb_device
*dev
= hid_to_usb_dev(hid
);
783 struct usb_interface
*intf
= usbhid
->intf
;
784 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
787 ret
= usb_control_msg(dev
, usb_sndctrlpipe(dev
, 0),
789 USB_DIR_OUT
| USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
790 ((HID_OUTPUT_REPORT
+ 1) << 8) | *buf
,
791 interface
->desc
.bInterfaceNumber
, buf
+ 1, count
- 1,
792 USB_CTRL_SET_TIMEOUT
);
794 /* count also the report id */
801 static void usbhid_restart_queues(struct usbhid_device
*usbhid
)
804 usbhid_restart_out_queue(usbhid
);
805 usbhid_restart_ctrl_queue(usbhid
);
808 static void __usbhid_restart_queues(struct work_struct
*work
)
810 struct usbhid_device
*usbhid
=
811 container_of(work
, struct usbhid_device
, restart_work
);
814 r
= usb_autopm_get_interface(usbhid
->intf
);
817 usb_autopm_put_interface(usbhid
->intf
);
820 static void hid_free_buffers(struct usb_device
*dev
, struct hid_device
*hid
)
822 struct usbhid_device
*usbhid
= hid
->driver_data
;
824 usb_buffer_free(dev
, usbhid
->bufsize
, usbhid
->inbuf
, usbhid
->inbuf_dma
);
825 usb_buffer_free(dev
, usbhid
->bufsize
, usbhid
->outbuf
, usbhid
->outbuf_dma
);
826 usb_buffer_free(dev
, sizeof(*(usbhid
->cr
)), usbhid
->cr
, usbhid
->cr_dma
);
827 usb_buffer_free(dev
, usbhid
->bufsize
, usbhid
->ctrlbuf
, usbhid
->ctrlbuf_dma
);
830 static int usbhid_parse(struct hid_device
*hid
)
832 struct usb_interface
*intf
= to_usb_interface(hid
->dev
.parent
);
833 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
834 struct usb_device
*dev
= interface_to_usbdev (intf
);
835 struct hid_descriptor
*hdesc
;
837 unsigned int rsize
= 0;
841 quirks
= usbhid_lookup_quirk(le16_to_cpu(dev
->descriptor
.idVendor
),
842 le16_to_cpu(dev
->descriptor
.idProduct
));
844 if (quirks
& HID_QUIRK_IGNORE
)
847 /* Many keyboards and mice don't like to be polled for reports,
848 * so we will always set the HID_QUIRK_NOGET flag for them. */
849 if (interface
->desc
.bInterfaceSubClass
== USB_INTERFACE_SUBCLASS_BOOT
) {
850 if (interface
->desc
.bInterfaceProtocol
== USB_INTERFACE_PROTOCOL_KEYBOARD
||
851 interface
->desc
.bInterfaceProtocol
== USB_INTERFACE_PROTOCOL_MOUSE
)
852 quirks
|= HID_QUIRK_NOGET
;
855 if (usb_get_extra_descriptor(interface
, HID_DT_HID
, &hdesc
) &&
856 (!interface
->desc
.bNumEndpoints
||
857 usb_get_extra_descriptor(&interface
->endpoint
[0], HID_DT_HID
, &hdesc
))) {
858 dbg_hid("class descriptor not present\n");
862 hid
->version
= le16_to_cpu(hdesc
->bcdHID
);
863 hid
->country
= hdesc
->bCountryCode
;
865 for (n
= 0; n
< hdesc
->bNumDescriptors
; n
++)
866 if (hdesc
->desc
[n
].bDescriptorType
== HID_DT_REPORT
)
867 rsize
= le16_to_cpu(hdesc
->desc
[n
].wDescriptorLength
);
869 if (!rsize
|| rsize
> HID_MAX_DESCRIPTOR_SIZE
) {
870 dbg_hid("weird size of report descriptor (%u)\n", rsize
);
874 if (!(rdesc
= kmalloc(rsize
, GFP_KERNEL
))) {
875 dbg_hid("couldn't allocate rdesc memory\n");
879 hid_set_idle(dev
, interface
->desc
.bInterfaceNumber
, 0, 0);
881 ret
= hid_get_class_descriptor(dev
, interface
->desc
.bInterfaceNumber
,
882 HID_DT_REPORT
, rdesc
, rsize
);
884 dbg_hid("reading report descriptor failed\n");
889 ret
= hid_parse_report(hid
, rdesc
, rsize
);
892 dbg_hid("parsing report descriptor failed\n");
896 hid
->quirks
|= quirks
;
903 static int usbhid_start(struct hid_device
*hid
)
905 struct usb_interface
*intf
= to_usb_interface(hid
->dev
.parent
);
906 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
907 struct usb_device
*dev
= interface_to_usbdev(intf
);
908 struct usbhid_device
*usbhid
= hid
->driver_data
;
909 unsigned int n
, insize
= 0;
912 clear_bit(HID_DISCONNECTED
, &usbhid
->iofl
);
914 usbhid
->bufsize
= HID_MIN_BUFFER_SIZE
;
915 hid_find_max_report(hid
, HID_INPUT_REPORT
, &usbhid
->bufsize
);
916 hid_find_max_report(hid
, HID_OUTPUT_REPORT
, &usbhid
->bufsize
);
917 hid_find_max_report(hid
, HID_FEATURE_REPORT
, &usbhid
->bufsize
);
919 if (usbhid
->bufsize
> HID_MAX_BUFFER_SIZE
)
920 usbhid
->bufsize
= HID_MAX_BUFFER_SIZE
;
922 hid_find_max_report(hid
, HID_INPUT_REPORT
, &insize
);
924 if (insize
> HID_MAX_BUFFER_SIZE
)
925 insize
= HID_MAX_BUFFER_SIZE
;
927 if (hid_alloc_buffers(dev
, hid
)) {
932 for (n
= 0; n
< interface
->desc
.bNumEndpoints
; n
++) {
933 struct usb_endpoint_descriptor
*endpoint
;
937 endpoint
= &interface
->endpoint
[n
].desc
;
938 if (!usb_endpoint_xfer_int(endpoint
))
941 interval
= endpoint
->bInterval
;
943 /* Some vendors give fullspeed interval on highspeed devides */
944 if (hid
->quirks
& HID_QUIRK_FULLSPEED_INTERVAL
&&
945 dev
->speed
== USB_SPEED_HIGH
) {
946 interval
= fls(endpoint
->bInterval
*8);
947 printk(KERN_INFO
"%s: Fixing fullspeed to highspeed interval: %d -> %d\n",
948 hid
->name
, endpoint
->bInterval
, interval
);
951 /* Change the polling interval of mice. */
952 if (hid
->collection
->usage
== HID_GD_MOUSE
&& hid_mousepoll_interval
> 0)
953 interval
= hid_mousepoll_interval
;
956 if (usb_endpoint_dir_in(endpoint
)) {
959 if (!(usbhid
->urbin
= usb_alloc_urb(0, GFP_KERNEL
)))
961 pipe
= usb_rcvintpipe(dev
, endpoint
->bEndpointAddress
);
962 usb_fill_int_urb(usbhid
->urbin
, dev
, pipe
, usbhid
->inbuf
, insize
,
963 hid_irq_in
, hid
, interval
);
964 usbhid
->urbin
->transfer_dma
= usbhid
->inbuf_dma
;
965 usbhid
->urbin
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
969 if (!(usbhid
->urbout
= usb_alloc_urb(0, GFP_KERNEL
)))
971 pipe
= usb_sndintpipe(dev
, endpoint
->bEndpointAddress
);
972 usb_fill_int_urb(usbhid
->urbout
, dev
, pipe
, usbhid
->outbuf
, 0,
973 hid_irq_out
, hid
, interval
);
974 usbhid
->urbout
->transfer_dma
= usbhid
->outbuf_dma
;
975 usbhid
->urbout
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
979 init_waitqueue_head(&usbhid
->wait
);
980 INIT_WORK(&usbhid
->reset_work
, hid_reset
);
981 INIT_WORK(&usbhid
->restart_work
, __usbhid_restart_queues
);
982 setup_timer(&usbhid
->io_retry
, hid_retry_timeout
, (unsigned long) hid
);
984 spin_lock_init(&usbhid
->lock
);
985 spin_lock_init(&usbhid
->lock
);
988 usbhid
->ifnum
= interface
->desc
.bInterfaceNumber
;
990 usbhid
->urbctrl
= usb_alloc_urb(0, GFP_KERNEL
);
991 if (!usbhid
->urbctrl
) {
996 usb_fill_control_urb(usbhid
->urbctrl
, dev
, 0, (void *) usbhid
->cr
,
997 usbhid
->ctrlbuf
, 1, hid_ctrl
, hid
);
998 usbhid
->urbctrl
->setup_dma
= usbhid
->cr_dma
;
999 usbhid
->urbctrl
->transfer_dma
= usbhid
->ctrlbuf_dma
;
1000 usbhid
->urbctrl
->transfer_flags
|= (URB_NO_TRANSFER_DMA_MAP
| URB_NO_SETUP_DMA_MAP
);
1002 usbhid_init_reports(hid
);
1004 set_bit(HID_STARTED
, &usbhid
->iofl
);
1006 /* Some keyboards don't work until their LEDs have been set.
1007 * Since BIOSes do set the LEDs, it must be safe for any device
1008 * that supports the keyboard boot protocol.
1010 if (interface
->desc
.bInterfaceSubClass
== USB_INTERFACE_SUBCLASS_BOOT
&&
1011 interface
->desc
.bInterfaceProtocol
==
1012 USB_INTERFACE_PROTOCOL_KEYBOARD
)
1013 usbhid_set_leds(hid
);
1018 usb_free_urb(usbhid
->urbin
);
1019 usb_free_urb(usbhid
->urbout
);
1020 usb_free_urb(usbhid
->urbctrl
);
1021 usbhid
->urbin
= NULL
;
1022 usbhid
->urbout
= NULL
;
1023 usbhid
->urbctrl
= NULL
;
1024 hid_free_buffers(dev
, hid
);
1028 static void usbhid_stop(struct hid_device
*hid
)
1030 struct usbhid_device
*usbhid
= hid
->driver_data
;
1032 if (WARN_ON(!usbhid
))
1035 clear_bit(HID_STARTED
, &usbhid
->iofl
);
1036 spin_lock_irq(&usbhid
->lock
); /* Sync with error handler */
1037 set_bit(HID_DISCONNECTED
, &usbhid
->iofl
);
1038 spin_unlock_irq(&usbhid
->lock
);
1039 usb_kill_urb(usbhid
->urbin
);
1040 usb_kill_urb(usbhid
->urbout
);
1041 usb_kill_urb(usbhid
->urbctrl
);
1043 hid_cancel_delayed_stuff(usbhid
);
1045 if (hid
->claimed
& HID_CLAIMED_INPUT
)
1046 hidinput_disconnect(hid
);
1047 if (hid
->claimed
& HID_CLAIMED_HIDDEV
)
1048 hiddev_disconnect(hid
);
1049 if (hid
->claimed
& HID_CLAIMED_HIDRAW
)
1050 hidraw_disconnect(hid
);
1054 usb_free_urb(usbhid
->urbin
);
1055 usb_free_urb(usbhid
->urbctrl
);
1056 usb_free_urb(usbhid
->urbout
);
1057 usbhid
->urbin
= NULL
; /* don't mess up next start */
1058 usbhid
->urbctrl
= NULL
;
1059 usbhid
->urbout
= NULL
;
1061 hid_free_buffers(hid_to_usb_dev(hid
), hid
);
1064 static int usbhid_power(struct hid_device
*hid
, int lvl
)
1069 case PM_HINT_FULLON
:
1070 r
= usbhid_get_power(hid
);
1072 case PM_HINT_NORMAL
:
1073 usbhid_put_power(hid
);
1079 static struct hid_ll_driver usb_hid_driver
= {
1080 .parse
= usbhid_parse
,
1081 .start
= usbhid_start
,
1082 .stop
= usbhid_stop
,
1083 .open
= usbhid_open
,
1084 .close
= usbhid_close
,
1085 .power
= usbhid_power
,
1086 .hidinput_input_event
= usb_hidinput_input_event
,
1089 static int hid_probe(struct usb_interface
*intf
, const struct usb_device_id
*id
)
1091 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
1092 struct usb_device
*dev
= interface_to_usbdev(intf
);
1093 struct usbhid_device
*usbhid
;
1094 struct hid_device
*hid
;
1095 unsigned int n
, has_in
= 0;
1099 dbg_hid("HID probe called for ifnum %d\n",
1100 intf
->altsetting
->desc
.bInterfaceNumber
);
1102 for (n
= 0; n
< interface
->desc
.bNumEndpoints
; n
++)
1103 if (usb_endpoint_is_int_in(&interface
->endpoint
[n
].desc
))
1106 dev_err(&intf
->dev
, "couldn't find an input interrupt "
1111 hid
= hid_allocate_device();
1113 return PTR_ERR(hid
);
1115 usb_set_intfdata(intf
, hid
);
1116 hid
->ll_driver
= &usb_hid_driver
;
1117 hid
->hid_output_raw_report
= usbhid_output_raw_report
;
1118 hid
->ff_init
= hid_pidff_init
;
1119 #ifdef CONFIG_USB_HIDDEV
1120 hid
->hiddev_connect
= hiddev_connect
;
1121 hid
->hiddev_hid_event
= hiddev_hid_event
;
1122 hid
->hiddev_report_event
= hiddev_report_event
;
1124 hid
->dev
.parent
= &intf
->dev
;
1126 hid
->vendor
= le16_to_cpu(dev
->descriptor
.idVendor
);
1127 hid
->product
= le16_to_cpu(dev
->descriptor
.idProduct
);
1129 if (intf
->cur_altsetting
->desc
.bInterfaceProtocol
==
1130 USB_INTERFACE_PROTOCOL_MOUSE
)
1131 hid
->type
= HID_TYPE_USBMOUSE
;
1133 if (dev
->manufacturer
)
1134 strlcpy(hid
->name
, dev
->manufacturer
, sizeof(hid
->name
));
1137 if (dev
->manufacturer
)
1138 strlcat(hid
->name
, " ", sizeof(hid
->name
));
1139 strlcat(hid
->name
, dev
->product
, sizeof(hid
->name
));
1142 if (!strlen(hid
->name
))
1143 snprintf(hid
->name
, sizeof(hid
->name
), "HID %04x:%04x",
1144 le16_to_cpu(dev
->descriptor
.idVendor
),
1145 le16_to_cpu(dev
->descriptor
.idProduct
));
1147 usb_make_path(dev
, hid
->phys
, sizeof(hid
->phys
));
1148 strlcat(hid
->phys
, "/input", sizeof(hid
->phys
));
1149 len
= strlen(hid
->phys
);
1150 if (len
< sizeof(hid
->phys
) - 1)
1151 snprintf(hid
->phys
+ len
, sizeof(hid
->phys
) - len
,
1152 "%d", intf
->altsetting
[0].desc
.bInterfaceNumber
);
1154 if (usb_string(dev
, dev
->descriptor
.iSerialNumber
, hid
->uniq
, 64) <= 0)
1157 usbhid
= kzalloc(sizeof(*usbhid
), GFP_KERNEL
);
1158 if (usbhid
== NULL
) {
1163 hid
->driver_data
= usbhid
;
1166 ret
= hid_add_device(hid
);
1169 dev_err(&intf
->dev
, "can't add hid device: %d\n", ret
);
1177 hid_destroy_device(hid
);
1181 static void hid_disconnect(struct usb_interface
*intf
)
1183 struct hid_device
*hid
= usb_get_intfdata(intf
);
1184 struct usbhid_device
*usbhid
;
1189 usbhid
= hid
->driver_data
;
1190 hid_destroy_device(hid
);
1194 static void hid_cancel_delayed_stuff(struct usbhid_device
*usbhid
)
1196 del_timer_sync(&usbhid
->io_retry
);
1197 cancel_work_sync(&usbhid
->restart_work
);
1198 cancel_work_sync(&usbhid
->reset_work
);
1201 static void hid_cease_io(struct usbhid_device
*usbhid
)
1203 del_timer(&usbhid
->io_retry
);
1204 usb_kill_urb(usbhid
->urbin
);
1205 usb_kill_urb(usbhid
->urbctrl
);
1206 usb_kill_urb(usbhid
->urbout
);
1209 /* Treat USB reset pretty much the same as suspend/resume */
1210 static int hid_pre_reset(struct usb_interface
*intf
)
1212 struct hid_device
*hid
= usb_get_intfdata(intf
);
1213 struct usbhid_device
*usbhid
= hid
->driver_data
;
1215 spin_lock_irq(&usbhid
->lock
);
1216 set_bit(HID_RESET_PENDING
, &usbhid
->iofl
);
1217 spin_unlock_irq(&usbhid
->lock
);
1218 cancel_work_sync(&usbhid
->restart_work
);
1219 hid_cease_io(usbhid
);
1224 /* Same routine used for post_reset and reset_resume */
1225 static int hid_post_reset(struct usb_interface
*intf
)
1227 struct usb_device
*dev
= interface_to_usbdev (intf
);
1228 struct hid_device
*hid
= usb_get_intfdata(intf
);
1229 struct usbhid_device
*usbhid
= hid
->driver_data
;
1232 spin_lock_irq(&usbhid
->lock
);
1233 clear_bit(HID_RESET_PENDING
, &usbhid
->iofl
);
1234 spin_unlock_irq(&usbhid
->lock
);
1235 hid_set_idle(dev
, intf
->cur_altsetting
->desc
.bInterfaceNumber
, 0, 0);
1236 /* FIXME: Any more reinitialization needed? */
1237 status
= hid_start_in(hid
);
1240 usbhid_restart_queues(usbhid
);
1245 int usbhid_get_power(struct hid_device
*hid
)
1247 struct usbhid_device
*usbhid
= hid
->driver_data
;
1249 return usb_autopm_get_interface(usbhid
->intf
);
1252 void usbhid_put_power(struct hid_device
*hid
)
1254 struct usbhid_device
*usbhid
= hid
->driver_data
;
1256 usb_autopm_put_interface(usbhid
->intf
);
1261 static int hid_suspend(struct usb_interface
*intf
, pm_message_t message
)
1263 struct hid_device
*hid
= usb_get_intfdata(intf
);
1264 struct usbhid_device
*usbhid
= hid
->driver_data
;
1265 struct usb_device
*udev
= interface_to_usbdev(intf
);
1268 if (udev
->auto_pm
) {
1269 spin_lock_irq(&usbhid
->lock
); /* Sync with error handler */
1270 if (!test_bit(HID_RESET_PENDING
, &usbhid
->iofl
)
1271 && !test_bit(HID_CLEAR_HALT
, &usbhid
->iofl
)
1272 && !test_bit(HID_OUT_RUNNING
, &usbhid
->iofl
)
1273 && !test_bit(HID_CTRL_RUNNING
, &usbhid
->iofl
)
1274 && !test_bit(HID_KEYS_PRESSED
, &usbhid
->iofl
)
1275 && (!usbhid
->ledcount
|| ignoreled
))
1277 set_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
);
1278 spin_unlock_irq(&usbhid
->lock
);
1280 usbhid_mark_busy(usbhid
);
1281 spin_unlock_irq(&usbhid
->lock
);
1286 spin_lock_irq(&usbhid
->lock
);
1287 set_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
);
1288 spin_unlock_irq(&usbhid
->lock
);
1289 if (usbhid_wait_io(hid
) < 0)
1293 if (!ignoreled
&& udev
->auto_pm
) {
1294 spin_lock_irq(&usbhid
->lock
);
1295 if (test_bit(HID_LED_ON
, &usbhid
->iofl
)) {
1296 spin_unlock_irq(&usbhid
->lock
);
1297 usbhid_mark_busy(usbhid
);
1300 spin_unlock_irq(&usbhid
->lock
);
1303 hid_cancel_delayed_stuff(usbhid
);
1304 hid_cease_io(usbhid
);
1306 if (udev
->auto_pm
&& test_bit(HID_KEYS_PRESSED
, &usbhid
->iofl
)) {
1307 /* lost race against keypresses */
1308 status
= hid_start_in(hid
);
1311 usbhid_mark_busy(usbhid
);
1314 dev_dbg(&intf
->dev
, "suspend\n");
1318 static int hid_resume(struct usb_interface
*intf
)
1320 struct hid_device
*hid
= usb_get_intfdata (intf
);
1321 struct usbhid_device
*usbhid
= hid
->driver_data
;
1324 if (!test_bit(HID_STARTED
, &usbhid
->iofl
))
1327 clear_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
);
1328 usbhid_mark_busy(usbhid
);
1330 if (test_bit(HID_CLEAR_HALT
, &usbhid
->iofl
) ||
1331 test_bit(HID_RESET_PENDING
, &usbhid
->iofl
))
1332 schedule_work(&usbhid
->reset_work
);
1333 usbhid
->retry_delay
= 0;
1334 status
= hid_start_in(hid
);
1337 usbhid_restart_queues(usbhid
);
1339 dev_dbg(&intf
->dev
, "resume status %d\n", status
);
1343 static int hid_reset_resume(struct usb_interface
*intf
)
1345 struct hid_device
*hid
= usb_get_intfdata(intf
);
1346 struct usbhid_device
*usbhid
= hid
->driver_data
;
1348 clear_bit(HID_REPORTED_IDLE
, &usbhid
->iofl
);
1349 return hid_post_reset(intf
);
1352 #endif /* CONFIG_PM */
1354 static struct usb_device_id hid_usb_ids
[] = {
1355 { .match_flags
= USB_DEVICE_ID_MATCH_INT_CLASS
,
1356 .bInterfaceClass
= USB_INTERFACE_CLASS_HID
},
1357 { } /* Terminating entry */
1360 MODULE_DEVICE_TABLE (usb
, hid_usb_ids
);
1362 static struct usb_driver hid_driver
= {
1365 .disconnect
= hid_disconnect
,
1367 .suspend
= hid_suspend
,
1368 .resume
= hid_resume
,
1369 .reset_resume
= hid_reset_resume
,
1371 .pre_reset
= hid_pre_reset
,
1372 .post_reset
= hid_post_reset
,
1373 .id_table
= hid_usb_ids
,
1374 .supports_autosuspend
= 1,
1377 static const struct hid_device_id hid_usb_table
[] = {
1378 { HID_USB_DEVICE(HID_ANY_ID
, HID_ANY_ID
) },
1382 static struct hid_driver hid_usb_driver
= {
1383 .name
= "generic-usb",
1384 .id_table
= hid_usb_table
,
1387 static int __init
hid_init(void)
1389 int retval
= -ENOMEM
;
1391 resumption_waker
= create_freezeable_workqueue("usbhid_resumer");
1392 if (!resumption_waker
)
1394 retval
= hid_register_driver(&hid_usb_driver
);
1396 goto hid_register_fail
;
1397 retval
= usbhid_quirks_init(quirks_param
);
1399 goto usbhid_quirks_init_fail
;
1400 retval
= hiddev_init();
1402 goto hiddev_init_fail
;
1403 retval
= usb_register(&hid_driver
);
1405 goto usb_register_fail
;
1406 printk(KERN_INFO KBUILD_MODNAME
": " DRIVER_VERSION
":"
1413 usbhid_quirks_exit();
1414 usbhid_quirks_init_fail
:
1415 hid_unregister_driver(&hid_usb_driver
);
1417 destroy_workqueue(resumption_waker
);
1422 static void __exit
hid_exit(void)
1424 usb_deregister(&hid_driver
);
1426 usbhid_quirks_exit();
1427 hid_unregister_driver(&hid_usb_driver
);
1428 destroy_workqueue(resumption_waker
);
1431 module_init(hid_init
);
1432 module_exit(hid_exit
);
1434 MODULE_AUTHOR(DRIVER_AUTHOR
);
1435 MODULE_DESCRIPTION(DRIVER_DESC
);
1436 MODULE_LICENSE(DRIVER_LICENSE
);