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PCI: add an option to allow ASPM enabled forcibly
[linux-2.6/next.git] / drivers / hid / usbhid / hid-core.c
blob27fe4d8912cb9a6a1e1b847b0899103199fdbbe9
1 /*
2 * USB HID support for Linux
3 *
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) 2006-2007 Jiri Kosina
8 */
9
10 /*
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
14 * any later version.
15 */
16
17 #include <linux/module.h>
18 #include <linux/slab.h>
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <linux/list.h>
22 #include <linux/mm.h>
23 #include <linux/smp_lock.h>
24 #include <linux/spinlock.h>
25 #include <asm/unaligned.h>
26 #include <asm/byteorder.h>
27 #include <linux/input.h>
28 #include <linux/wait.h>
29
30 #include <linux/usb.h>
31
32 #include <linux/hid.h>
33 #include <linux/hiddev.h>
34 #include <linux/hid-debug.h>
35 #include <linux/hidraw.h>
36 #include "usbhid.h"
37
38 /*
39 * Version Information
40 */
41
42 #define DRIVER_VERSION "v2.6"
43 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina"
44 #define DRIVER_DESC "USB HID core driver"
45 #define DRIVER_LICENSE "GPL"
46
47 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
48 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
49 /*
50 * Module parameters.
51 */
52
53 static unsigned int hid_mousepoll_interval;
54 module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
55 MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
56
57 /* Quirks specified at module load time */
58 static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
59 module_param_array_named(quirks, quirks_param, charp, NULL, 0444);
60 MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying "
61 " quirks=vendorID:productID:quirks"
62 " where vendorID, productID, and quirks are all in"
63 " 0x-prefixed hex");
64 static char *rdesc_quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
65 module_param_array_named(rdesc_quirks, rdesc_quirks_param, charp, NULL, 0444);
66 MODULE_PARM_DESC(rdesc_quirks, "Add/modify report descriptor quirks by specifying "
67 " rdesc_quirks=vendorID:productID:rdesc_quirks"
68 " where vendorID, productID, and rdesc_quirks are all in"
69 " 0x-prefixed hex");
70 /*
71 * Input submission and I/O error handler.
72 */
73
74 static void hid_io_error(struct hid_device *hid);
75
76 /* Start up the input URB */
77 static int hid_start_in(struct hid_device *hid)
78 {
79 unsigned long flags;
80 int rc = 0;
81 struct usbhid_device *usbhid = hid->driver_data;
82
83 spin_lock_irqsave(&usbhid->inlock, flags);
84 if (hid->open > 0 && !test_bit(HID_SUSPENDED, &usbhid->iofl) &&
85 !test_bit(HID_DISCONNECTED, &usbhid->iofl) &&
86 !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) {
87 rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC);
88 if (rc != 0)
89 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
90 }
91 spin_unlock_irqrestore(&usbhid->inlock, flags);
92 return rc;
93 }
94
95 /* I/O retry timer routine */
96 static void hid_retry_timeout(unsigned long _hid)
97 {
98 struct hid_device *hid = (struct hid_device *) _hid;
99 struct usbhid_device *usbhid = hid->driver_data;
100
101 dev_dbg(&usbhid->intf->dev, "retrying intr urb\n");
102 if (hid_start_in(hid))
103 hid_io_error(hid);
104 }
105
106 /* Workqueue routine to reset the device or clear a halt */
107 static void hid_reset(struct work_struct *work)
108 {
109 struct usbhid_device *usbhid =
110 container_of(work, struct usbhid_device, reset_work);
111 struct hid_device *hid = usbhid->hid;
112 int rc_lock, rc = 0;
113
114 if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) {
115 dev_dbg(&usbhid->intf->dev, "clear halt\n");
116 rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe);
117 clear_bit(HID_CLEAR_HALT, &usbhid->iofl);
118 hid_start_in(hid);
119 }
120
121 else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) {
122 dev_dbg(&usbhid->intf->dev, "resetting device\n");
123 rc = rc_lock = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf);
124 if (rc_lock >= 0) {
125 rc = usb_reset_device(hid_to_usb_dev(hid));
126 if (rc_lock)
127 usb_unlock_device(hid_to_usb_dev(hid));
128 }
129 clear_bit(HID_RESET_PENDING, &usbhid->iofl);
130 }
131
132 switch (rc) {
133 case 0:
134 if (!test_bit(HID_IN_RUNNING, &usbhid->iofl))
135 hid_io_error(hid);
136 break;
137 default:
138 err_hid("can't reset device, %s-%s/input%d, status %d",
139 hid_to_usb_dev(hid)->bus->bus_name,
140 hid_to_usb_dev(hid)->devpath,
141 usbhid->ifnum, rc);
142 /* FALLTHROUGH */
143 case -EHOSTUNREACH:
144 case -ENODEV:
145 case -EINTR:
146 break;
147 }
148 }
149
150 /* Main I/O error handler */
151 static void hid_io_error(struct hid_device *hid)
152 {
153 unsigned long flags;
154 struct usbhid_device *usbhid = hid->driver_data;
155
156 spin_lock_irqsave(&usbhid->inlock, flags);
157
158 /* Stop when disconnected */
159 if (test_bit(HID_DISCONNECTED, &usbhid->iofl))
160 goto done;
161
162 /* If it has been a while since the last error, we'll assume
163 * this a brand new error and reset the retry timeout. */
164 if (time_after(jiffies, usbhid->stop_retry + HZ/2))
165 usbhid->retry_delay = 0;
166
167 /* When an error occurs, retry at increasing intervals */
168 if (usbhid->retry_delay == 0) {
169 usbhid->retry_delay = 13; /* Then 26, 52, 104, 104, ... */
170 usbhid->stop_retry = jiffies + msecs_to_jiffies(1000);
171 } else if (usbhid->retry_delay < 100)
172 usbhid->retry_delay *= 2;
173
174 if (time_after(jiffies, usbhid->stop_retry)) {
175
176 /* Retries failed, so do a port reset */
177 if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) {
178 schedule_work(&usbhid->reset_work);
179 goto done;
180 }
181 }
182
183 mod_timer(&usbhid->io_retry,
184 jiffies + msecs_to_jiffies(usbhid->retry_delay));
185 done:
186 spin_unlock_irqrestore(&usbhid->inlock, flags);
187 }
188
189 /*
190 * Input interrupt completion handler.
191 */
192
193 static void hid_irq_in(struct urb *urb)
194 {
195 struct hid_device *hid = urb->context;
196 struct usbhid_device *usbhid = hid->driver_data;
197 int status;
198
199 switch (urb->status) {
200 case 0: /* success */
201 usbhid->retry_delay = 0;
202 hid_input_report(urb->context, HID_INPUT_REPORT,
203 urb->transfer_buffer,
204 urb->actual_length, 1);
205 break;
206 case -EPIPE: /* stall */
207 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
208 set_bit(HID_CLEAR_HALT, &usbhid->iofl);
209 schedule_work(&usbhid->reset_work);
210 return;
211 case -ECONNRESET: /* unlink */
212 case -ENOENT:
213 case -ESHUTDOWN: /* unplug */
214 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
215 return;
216 case -EILSEQ: /* protocol error or unplug */
217 case -EPROTO: /* protocol error or unplug */
218 case -ETIME: /* protocol error or unplug */
219 case -ETIMEDOUT: /* Should never happen, but... */
220 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
221 hid_io_error(hid);
222 return;
223 default: /* error */
224 warn("input irq status %d received", urb->status);
225 }
226
227 status = usb_submit_urb(urb, GFP_ATOMIC);
228 if (status) {
229 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
230 if (status != -EPERM) {
231 err_hid("can't resubmit intr, %s-%s/input%d, status %d",
232 hid_to_usb_dev(hid)->bus->bus_name,
233 hid_to_usb_dev(hid)->devpath,
234 usbhid->ifnum, status);
235 hid_io_error(hid);
236 }
237 }
238 }
239
240 static int hid_submit_out(struct hid_device *hid)
241 {
242 struct hid_report *report;
243 struct usbhid_device *usbhid = hid->driver_data;
244
245 report = usbhid->out[usbhid->outtail];
246
247 hid_output_report(report, usbhid->outbuf);
248 usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
249 usbhid->urbout->dev = hid_to_usb_dev(hid);
250
251 dbg_hid("submitting out urb\n");
252
253 if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) {
254 err_hid("usb_submit_urb(out) failed");
255 return -1;
256 }
257
258 return 0;
259 }
260
261 static int hid_submit_ctrl(struct hid_device *hid)
262 {
263 struct hid_report *report;
264 unsigned char dir;
265 int len;
266 struct usbhid_device *usbhid = hid->driver_data;
267
268 report = usbhid->ctrl[usbhid->ctrltail].report;
269 dir = usbhid->ctrl[usbhid->ctrltail].dir;
270
271 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
272 if (dir == USB_DIR_OUT) {
273 hid_output_report(report, usbhid->ctrlbuf);
274 usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0);
275 usbhid->urbctrl->transfer_buffer_length = len;
276 } else {
277 int maxpacket, padlen;
278
279 usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
280 maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);
281 if (maxpacket > 0) {
282 padlen = DIV_ROUND_UP(len, maxpacket);
283 padlen *= maxpacket;
284 if (padlen > usbhid->bufsize)
285 padlen = usbhid->bufsize;
286 } else
287 padlen = 0;
288 usbhid->urbctrl->transfer_buffer_length = padlen;
289 }
290 usbhid->urbctrl->dev = hid_to_usb_dev(hid);
291
292 usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
293 usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
294 usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
295 usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum);
296 usbhid->cr->wLength = cpu_to_le16(len);
297
298 dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n",
299 usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
300 usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength);
301
302 if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) {
303 err_hid("usb_submit_urb(ctrl) failed");
304 return -1;
305 }
306
307 return 0;
308 }
309
310 /*
311 * Output interrupt completion handler.
312 */
313
314 static void hid_irq_out(struct urb *urb)
315 {
316 struct hid_device *hid = urb->context;
317 struct usbhid_device *usbhid = hid->driver_data;
318 unsigned long flags;
319 int unplug = 0;
320
321 switch (urb->status) {
322 case 0: /* success */
323 break;
324 case -ESHUTDOWN: /* unplug */
325 unplug = 1;
326 case -EILSEQ: /* protocol error or unplug */
327 case -EPROTO: /* protocol error or unplug */
328 case -ECONNRESET: /* unlink */
329 case -ENOENT:
330 break;
331 default: /* error */
332 warn("output irq status %d received", urb->status);
333 }
334
335 spin_lock_irqsave(&usbhid->outlock, flags);
336
337 if (unplug)
338 usbhid->outtail = usbhid->outhead;
339 else
340 usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
341
342 if (usbhid->outhead != usbhid->outtail) {
343 if (hid_submit_out(hid)) {
344 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
345 wake_up(&usbhid->wait);
346 }
347 spin_unlock_irqrestore(&usbhid->outlock, flags);
348 return;
349 }
350
351 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
352 spin_unlock_irqrestore(&usbhid->outlock, flags);
353 wake_up(&usbhid->wait);
354 }
355
356 /*
357 * Control pipe completion handler.
358 */
359
360 static void hid_ctrl(struct urb *urb)
361 {
362 struct hid_device *hid = urb->context;
363 struct usbhid_device *usbhid = hid->driver_data;
364 unsigned long flags;
365 int unplug = 0;
366
367 spin_lock_irqsave(&usbhid->ctrllock, flags);
368
369 switch (urb->status) {
370 case 0: /* success */
371 if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN)
372 hid_input_report(urb->context, usbhid->ctrl[usbhid->ctrltail].report->type,
373 urb->transfer_buffer, urb->actual_length, 0);
374 break;
375 case -ESHUTDOWN: /* unplug */
376 unplug = 1;
377 case -EILSEQ: /* protocol error or unplug */
378 case -EPROTO: /* protocol error or unplug */
379 case -ECONNRESET: /* unlink */
380 case -ENOENT:
381 case -EPIPE: /* report not available */
382 break;
383 default: /* error */
384 warn("ctrl urb status %d received", urb->status);
385 }
386
387 if (unplug)
388 usbhid->ctrltail = usbhid->ctrlhead;
389 else
390 usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
391
392 if (usbhid->ctrlhead != usbhid->ctrltail) {
393 if (hid_submit_ctrl(hid)) {
394 clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
395 wake_up(&usbhid->wait);
396 }
397 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
398 return;
399 }
400
401 clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
402 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
403 wake_up(&usbhid->wait);
404 }
405
406 void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
407 {
408 int head;
409 unsigned long flags;
410 struct usbhid_device *usbhid = hid->driver_data;
411
412 if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
413 return;
414
415 if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
416
417 spin_lock_irqsave(&usbhid->outlock, flags);
418
419 if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) {
420 spin_unlock_irqrestore(&usbhid->outlock, flags);
421 warn("output queue full");
422 return;
423 }
424
425 usbhid->out[usbhid->outhead] = report;
426 usbhid->outhead = head;
427
428 if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl))
429 if (hid_submit_out(hid))
430 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
431
432 spin_unlock_irqrestore(&usbhid->outlock, flags);
433 return;
434 }
435
436 spin_lock_irqsave(&usbhid->ctrllock, flags);
437
438 if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) {
439 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
440 warn("control queue full");
441 return;
442 }
443
444 usbhid->ctrl[usbhid->ctrlhead].report = report;
445 usbhid->ctrl[usbhid->ctrlhead].dir = dir;
446 usbhid->ctrlhead = head;
447
448 if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl))
449 if (hid_submit_ctrl(hid))
450 clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
451
452 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
453 }
454
455 static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
456 {
457 struct hid_device *hid = input_get_drvdata(dev);
458 struct hid_field *field;
459 int offset;
460
461 if (type == EV_FF)
462 return input_ff_event(dev, type, code, value);
463
464 if (type != EV_LED)
465 return -1;
466
467 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
468 warn("event field not found");
469 return -1;
470 }
471
472 hid_set_field(field, offset, value);
473 usbhid_submit_report(hid, field->report, USB_DIR_OUT);
474
475 return 0;
476 }
477
478 int usbhid_wait_io(struct hid_device *hid)
479 {
480 struct usbhid_device *usbhid = hid->driver_data;
481
482 if (!wait_event_timeout(usbhid->wait,
483 (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) &&
484 !test_bit(HID_OUT_RUNNING, &usbhid->iofl)),
485 10*HZ)) {
486 dbg_hid("timeout waiting for ctrl or out queue to clear\n");
487 return -1;
488 }
489
490 return 0;
491 }
492
493 static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
494 {
495 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
496 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report,
497 ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
498 }
499
500 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
501 unsigned char type, void *buf, int size)
502 {
503 int result, retries = 4;
504
505 memset(buf, 0, size);
506
507 do {
508 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
509 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
510 (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
511 retries--;
512 } while (result < size && retries);
513 return result;
514 }
515
516 int usbhid_open(struct hid_device *hid)
517 {
518 struct usbhid_device *usbhid = hid->driver_data;
519 int res;
520
521 if (!hid->open++) {
522 res = usb_autopm_get_interface(usbhid->intf);
523 if (res < 0) {
524 hid->open--;
525 return -EIO;
526 }
527 }
528 if (hid_start_in(hid))
529 hid_io_error(hid);
530 return 0;
531 }
532
533 void usbhid_close(struct hid_device *hid)
534 {
535 struct usbhid_device *usbhid = hid->driver_data;
536
537 if (!--hid->open) {
538 usb_kill_urb(usbhid->urbin);
539 usb_autopm_put_interface(usbhid->intf);
540 }
541 }
542
543 /*
544 * Initialize all reports
545 */
546
547 void usbhid_init_reports(struct hid_device *hid)
548 {
549 struct hid_report *report;
550 struct usbhid_device *usbhid = hid->driver_data;
551 int err, ret;
552
553 list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list)
554 usbhid_submit_report(hid, report, USB_DIR_IN);
555
556 list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
557 usbhid_submit_report(hid, report, USB_DIR_IN);
558
559 err = 0;
560 ret = usbhid_wait_io(hid);
561 while (ret) {
562 err |= ret;
563 if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl))
564 usb_kill_urb(usbhid->urbctrl);
565 if (test_bit(HID_OUT_RUNNING, &usbhid->iofl))
566 usb_kill_urb(usbhid->urbout);
567 ret = usbhid_wait_io(hid);
568 }
569
570 if (err)
571 warn("timeout initializing reports");
572 }
573
574 /*
575 * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01).
576 */
577 static int hid_find_field_early(struct hid_device *hid, unsigned int page,
578 unsigned int hid_code, struct hid_field **pfield)
579 {
580 struct hid_report *report;
581 struct hid_field *field;
582 struct hid_usage *usage;
583 int i, j;
584
585 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
586 for (i = 0; i < report->maxfield; i++) {
587 field = report->field[i];
588 for (j = 0; j < field->maxusage; j++) {
589 usage = &field->usage[j];
590 if ((usage->hid & HID_USAGE_PAGE) == page &&
591 (usage->hid & 0xFFFF) == hid_code) {
592 *pfield = field;
593 return j;
594 }
595 }
596 }
597 }
598 return -1;
599 }
600
601 static void usbhid_set_leds(struct hid_device *hid)
602 {
603 struct hid_field *field;
604 int offset;
605
606 if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) {
607 hid_set_field(field, offset, 0);
608 usbhid_submit_report(hid, field->report, USB_DIR_OUT);
609 }
610 }
611
612 /*
613 * Traverse the supplied list of reports and find the longest
614 */
615 static void hid_find_max_report(struct hid_device *hid, unsigned int type,
616 unsigned int *max)
617 {
618 struct hid_report *report;
619 unsigned int size;
620
621 list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
622 size = ((report->size - 1) >> 3) + 1;
623 if (type == HID_INPUT_REPORT && hid->report_enum[type].numbered)
624 size++;
625 if (*max < size)
626 *max = size;
627 }
628 }
629
630 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
631 {
632 struct usbhid_device *usbhid = hid->driver_data;
633
634 if (!(usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->inbuf_dma)))
635 return -1;
636 if (!(usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->outbuf_dma)))
637 return -1;
638 if (!(usbhid->cr = usb_buffer_alloc(dev, sizeof(*(usbhid->cr)), GFP_ATOMIC, &usbhid->cr_dma)))
639 return -1;
640 if (!(usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->ctrlbuf_dma)))
641 return -1;
642
643 return 0;
644 }
645
646 static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count)
647 {
648 struct usbhid_device *usbhid = hid->driver_data;
649 struct usb_device *dev = hid_to_usb_dev(hid);
650 struct usb_interface *intf = usbhid->intf;
651 struct usb_host_interface *interface = intf->cur_altsetting;
652 int ret;
653
654 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
655 HID_REQ_SET_REPORT,
656 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
657 ((HID_OUTPUT_REPORT + 1) << 8) | *buf,
658 interface->desc.bInterfaceNumber, buf + 1, count - 1,
659 USB_CTRL_SET_TIMEOUT);
660
661 /* count also the report id */
662 if (ret > 0)
663 ret++;
664
665 return ret;
666 }
667
668 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
669 {
670 struct usbhid_device *usbhid = hid->driver_data;
671
672 usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma);
673 usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma);
674 usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma);
675 usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma);
676 }
677
678 /*
679 * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
680 * to "operational". Without this, the ps3 controller will not report any
681 * events.
682 */
683 static void hid_fixup_sony_ps3_controller(struct usb_device *dev, int ifnum)
684 {
685 int result;
686 char *buf = kmalloc(18, GFP_KERNEL);
687
688 if (!buf)
689 return;
690
691 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
692 HID_REQ_GET_REPORT,
693 USB_DIR_IN | USB_TYPE_CLASS |
694 USB_RECIP_INTERFACE,
695 (3 << 8) | 0xf2, ifnum, buf, 17,
696 USB_CTRL_GET_TIMEOUT);
697
698 if (result < 0)
699 err_hid("%s failed: %d\n", __func__, result);
700
701 kfree(buf);
702 }
703
704 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
705 {
706 struct usb_host_interface *interface = intf->cur_altsetting;
707 struct usb_device *dev = interface_to_usbdev (intf);
708 struct hid_descriptor *hdesc;
709 struct hid_device *hid;
710 u32 quirks = 0;
711 unsigned int insize = 0, rsize = 0;
712 char *rdesc;
713 int n, len;
714 struct usbhid_device *usbhid;
715
716 quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
717 le16_to_cpu(dev->descriptor.idProduct));
718
719 /* Many keyboards and mice don't like to be polled for reports,
720 * so we will always set the HID_QUIRK_NOGET flag for them. */
721 if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
722 if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD ||
723 interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)
724 quirks |= HID_QUIRK_NOGET;
725 }
726
727 if (quirks & HID_QUIRK_IGNORE)
728 return NULL;
729
730 if ((quirks & HID_QUIRK_IGNORE_MOUSE) &&
731 (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE))
732 return NULL;
733
734
735 if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) &&
736 (!interface->desc.bNumEndpoints ||
737 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
738 dbg_hid("class descriptor not present\n");
739 return NULL;
740 }
741
742 for (n = 0; n < hdesc->bNumDescriptors; n++)
743 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
744 rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
745
746 if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
747 dbg_hid("weird size of report descriptor (%u)\n", rsize);
748 return NULL;
749 }
750
751 if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
752 dbg_hid("couldn't allocate rdesc memory\n");
753 return NULL;
754 }
755
756 hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0);
757
758 if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
759 dbg_hid("reading report descriptor failed\n");
760 kfree(rdesc);
761 return NULL;
762 }
763
764 usbhid_fixup_report_descriptor(le16_to_cpu(dev->descriptor.idVendor),
765 le16_to_cpu(dev->descriptor.idProduct), rdesc,
766 rsize, rdesc_quirks_param);
767
768 dbg_hid("report descriptor (size %u, read %d) = ", rsize, n);
769 for (n = 0; n < rsize; n++)
770 dbg_hid_line(" %02x", (unsigned char) rdesc[n]);
771 dbg_hid_line("\n");
772
773 if (!(hid = hid_parse_report(rdesc, n))) {
774 dbg_hid("parsing report descriptor failed\n");
775 kfree(rdesc);
776 return NULL;
777 }
778
779 kfree(rdesc);
780 hid->quirks = quirks;
781
782 if (!(usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL)))
783 goto fail_no_usbhid;
784
785 hid->driver_data = usbhid;
786 usbhid->hid = hid;
787
788 usbhid->bufsize = HID_MIN_BUFFER_SIZE;
789 hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize);
790 hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize);
791 hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize);
792
793 if (usbhid->bufsize > HID_MAX_BUFFER_SIZE)
794 usbhid->bufsize = HID_MAX_BUFFER_SIZE;
795
796 hid_find_max_report(hid, HID_INPUT_REPORT, &insize);
797
798 if (insize > HID_MAX_BUFFER_SIZE)
799 insize = HID_MAX_BUFFER_SIZE;
800
801 if (hid_alloc_buffers(dev, hid)) {
802 hid_free_buffers(dev, hid);
803 goto fail;
804 }
805
806 hid->name[0] = 0;
807
808 if (dev->manufacturer)
809 strlcpy(hid->name, dev->manufacturer, sizeof(hid->name));
810
811 if (dev->product) {
812 if (dev->manufacturer)
813 strlcat(hid->name, " ", sizeof(hid->name));
814 strlcat(hid->name, dev->product, sizeof(hid->name));
815 }
816
817 if (!strlen(hid->name))
818 snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x",
819 le16_to_cpu(dev->descriptor.idVendor),
820 le16_to_cpu(dev->descriptor.idProduct));
821
822 for (n = 0; n < interface->desc.bNumEndpoints; n++) {
823
824 struct usb_endpoint_descriptor *endpoint;
825 int pipe;
826 int interval;
827
828 endpoint = &interface->endpoint[n].desc;
829 if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
830 continue;
831
832 interval = endpoint->bInterval;
833
834 /* Some vendors give fullspeed interval on highspeed devides */
835 if (quirks & HID_QUIRK_FULLSPEED_INTERVAL &&
836 dev->speed == USB_SPEED_HIGH) {
837 interval = fls(endpoint->bInterval*8);
838 printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n",
839 hid->name, endpoint->bInterval, interval);
840 }
841
842 /* Change the polling interval of mice. */
843 if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
844 interval = hid_mousepoll_interval;
845
846 if (usb_endpoint_dir_in(endpoint)) {
847 if (usbhid->urbin)
848 continue;
849 if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
850 goto fail;
851 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
852 usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize,
853 hid_irq_in, hid, interval);
854 usbhid->urbin->transfer_dma = usbhid->inbuf_dma;
855 usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
856 } else {
857 if (usbhid->urbout)
858 continue;
859 if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
860 goto fail;
861 pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
862 usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0,
863 hid_irq_out, hid, interval);
864 usbhid->urbout->transfer_dma = usbhid->outbuf_dma;
865 usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
866 }
867 }
868
869 if (!usbhid->urbin) {
870 err_hid("couldn't find an input interrupt endpoint");
871 goto fail;
872 }
873
874 init_waitqueue_head(&usbhid->wait);
875 INIT_WORK(&usbhid->reset_work, hid_reset);
876 setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid);
877
878 spin_lock_init(&usbhid->inlock);
879 spin_lock_init(&usbhid->outlock);
880 spin_lock_init(&usbhid->ctrllock);
881
882 hid->version = le16_to_cpu(hdesc->bcdHID);
883 hid->country = hdesc->bCountryCode;
884 hid->dev = &intf->dev;
885 usbhid->intf = intf;
886 usbhid->ifnum = interface->desc.bInterfaceNumber;
887
888 hid->bus = BUS_USB;
889 hid->vendor = le16_to_cpu(dev->descriptor.idVendor);
890 hid->product = le16_to_cpu(dev->descriptor.idProduct);
891
892 usb_make_path(dev, hid->phys, sizeof(hid->phys));
893 strlcat(hid->phys, "/input", sizeof(hid->phys));
894 len = strlen(hid->phys);
895 if (len < sizeof(hid->phys) - 1)
896 snprintf(hid->phys + len, sizeof(hid->phys) - len,
897 "%d", intf->altsetting[0].desc.bInterfaceNumber);
898
899 if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
900 hid->uniq[0] = 0;
901
902 usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
903 if (!usbhid->urbctrl)
904 goto fail;
905
906 usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr,
907 usbhid->ctrlbuf, 1, hid_ctrl, hid);
908 usbhid->urbctrl->setup_dma = usbhid->cr_dma;
909 usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma;
910 usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
911 hid->hidinput_input_event = usb_hidinput_input_event;
912 hid->hid_open = usbhid_open;
913 hid->hid_close = usbhid_close;
914 #ifdef CONFIG_USB_HIDDEV
915 hid->hiddev_hid_event = hiddev_hid_event;
916 hid->hiddev_report_event = hiddev_report_event;
917 #endif
918 hid->hid_output_raw_report = usbhid_output_raw_report;
919 return hid;
920
921 fail:
922 usb_free_urb(usbhid->urbin);
923 usb_free_urb(usbhid->urbout);
924 usb_free_urb(usbhid->urbctrl);
925 hid_free_buffers(dev, hid);
926 kfree(usbhid);
927 fail_no_usbhid:
928 hid_free_device(hid);
929
930 return NULL;
931 }
932
933 static void hid_disconnect(struct usb_interface *intf)
934 {
935 struct hid_device *hid = usb_get_intfdata (intf);
936 struct usbhid_device *usbhid;
937
938 if (!hid)
939 return;
940
941 usbhid = hid->driver_data;
942
943 spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
944 usb_set_intfdata(intf, NULL);
945 set_bit(HID_DISCONNECTED, &usbhid->iofl);
946 spin_unlock_irq(&usbhid->inlock);
947 usb_kill_urb(usbhid->urbin);
948 usb_kill_urb(usbhid->urbout);
949 usb_kill_urb(usbhid->urbctrl);
950
951 del_timer_sync(&usbhid->io_retry);
952 cancel_work_sync(&usbhid->reset_work);
953
954 if (hid->claimed & HID_CLAIMED_INPUT)
955 hidinput_disconnect(hid);
956 if (hid->claimed & HID_CLAIMED_HIDDEV)
957 hiddev_disconnect(hid);
958 if (hid->claimed & HID_CLAIMED_HIDRAW)
959 hidraw_disconnect(hid);
960
961 usb_free_urb(usbhid->urbin);
962 usb_free_urb(usbhid->urbctrl);
963 usb_free_urb(usbhid->urbout);
964
965 hid_free_buffers(hid_to_usb_dev(hid), hid);
966 kfree(usbhid);
967 hid_free_device(hid);
968 }
969
970 static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
971 {
972 struct hid_device *hid;
973 char path[64];
974 int i;
975 char *c;
976
977 dbg_hid("HID probe called for ifnum %d\n",
978 intf->altsetting->desc.bInterfaceNumber);
979
980 if (!(hid = usb_hid_configure(intf)))
981 return -ENODEV;
982
983 usbhid_init_reports(hid);
984 hid_dump_device(hid);
985 if (hid->quirks & HID_QUIRK_RESET_LEDS)
986 usbhid_set_leds(hid);
987
988 if (!hidinput_connect(hid))
989 hid->claimed |= HID_CLAIMED_INPUT;
990 if (!hiddev_connect(hid))
991 hid->claimed |= HID_CLAIMED_HIDDEV;
992 if (!hidraw_connect(hid))
993 hid->claimed |= HID_CLAIMED_HIDRAW;
994
995 usb_set_intfdata(intf, hid);
996
997 if (!hid->claimed) {
998 printk ("HID device claimed by neither input, hiddev nor hidraw\n");
999 hid_disconnect(intf);
1000 return -ENODEV;
1001 }
1002
1003 if ((hid->claimed & HID_CLAIMED_INPUT))
1004 hid_ff_init(hid);
1005
1006 if (hid->quirks & HID_QUIRK_SONY_PS3_CONTROLLER)
1007 hid_fixup_sony_ps3_controller(interface_to_usbdev(intf),
1008 intf->cur_altsetting->desc.bInterfaceNumber);
1009
1010 printk(KERN_INFO);
1011
1012 if (hid->claimed & HID_CLAIMED_INPUT)
1013 printk("input");
1014 if ((hid->claimed & HID_CLAIMED_INPUT) && ((hid->claimed & HID_CLAIMED_HIDDEV) ||
1015 hid->claimed & HID_CLAIMED_HIDRAW))
1016 printk(",");
1017 if (hid->claimed & HID_CLAIMED_HIDDEV)
1018 printk("hiddev%d", hid->minor);
1019 if ((hid->claimed & HID_CLAIMED_INPUT) && (hid->claimed & HID_CLAIMED_HIDDEV) &&
1020 (hid->claimed & HID_CLAIMED_HIDRAW))
1021 printk(",");
1022 if (hid->claimed & HID_CLAIMED_HIDRAW)
1023 printk("hidraw%d", ((struct hidraw*)hid->hidraw)->minor);
1024
1025 c = "Device";
1026 for (i = 0; i < hid->maxcollection; i++) {
1027 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1028 (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1029 (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1030 c = hid_types[hid->collection[i].usage & 0xffff];
1031 break;
1032 }
1033 }
1034
1035 usb_make_path(interface_to_usbdev(intf), path, 63);
1036
1037 printk(": USB HID v%x.%02x %s [%s] on %s\n",
1038 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1039
1040 return 0;
1041 }
1042
1043 static int hid_suspend(struct usb_interface *intf, pm_message_t message)
1044 {
1045 struct hid_device *hid = usb_get_intfdata (intf);
1046 struct usbhid_device *usbhid = hid->driver_data;
1047
1048 spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
1049 set_bit(HID_SUSPENDED, &usbhid->iofl);
1050 spin_unlock_irq(&usbhid->inlock);
1051 del_timer(&usbhid->io_retry);
1052 usb_kill_urb(usbhid->urbin);
1053 dev_dbg(&intf->dev, "suspend\n");
1054 return 0;
1055 }
1056
1057 static int hid_resume(struct usb_interface *intf)
1058 {
1059 struct hid_device *hid = usb_get_intfdata (intf);
1060 struct usbhid_device *usbhid = hid->driver_data;
1061 int status;
1062
1063 clear_bit(HID_SUSPENDED, &usbhid->iofl);
1064 usbhid->retry_delay = 0;
1065 status = hid_start_in(hid);
1066 dev_dbg(&intf->dev, "resume status %d\n", status);
1067 return status;
1068 }
1069
1070 /* Treat USB reset pretty much the same as suspend/resume */
1071 static int hid_pre_reset(struct usb_interface *intf)
1072 {
1073 /* FIXME: What if the interface is already suspended? */
1074 hid_suspend(intf, PMSG_ON);
1075 return 0;
1076 }
1077
1078 /* Same routine used for post_reset and reset_resume */
1079 static int hid_post_reset(struct usb_interface *intf)
1080 {
1081 struct usb_device *dev = interface_to_usbdev (intf);
1082
1083 hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
1084 /* FIXME: Any more reinitialization needed? */
1085
1086 return hid_resume(intf);
1087 }
1088
1089 static struct usb_device_id hid_usb_ids [] = {
1090 { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1091 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1092 { } /* Terminating entry */
1093 };
1094
1095 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1096
1097 static struct usb_driver hid_driver = {
1098 .name = "usbhid",
1099 .probe = hid_probe,
1100 .disconnect = hid_disconnect,
1101 .suspend = hid_suspend,
1102 .resume = hid_resume,
1103 .reset_resume = hid_post_reset,
1104 .pre_reset = hid_pre_reset,
1105 .post_reset = hid_post_reset,
1106 .id_table = hid_usb_ids,
1107 .supports_autosuspend = 1,
1108 };
1109
1110 static int __init hid_init(void)
1111 {
1112 int retval;
1113 retval = usbhid_quirks_init(quirks_param);
1114 if (retval)
1115 goto usbhid_quirks_init_fail;
1116 retval = hiddev_init();
1117 if (retval)
1118 goto hiddev_init_fail;
1119 retval = usb_register(&hid_driver);
1120 if (retval)
1121 goto usb_register_fail;
1122 info(DRIVER_VERSION ":" DRIVER_DESC);
1123
1124 return 0;
1125 usb_register_fail:
1126 hiddev_exit();
1127 hiddev_init_fail:
1128 usbhid_quirks_exit();
1129 usbhid_quirks_init_fail:
1130 return retval;
1131 }
1132
1133 static void __exit hid_exit(void)
1134 {
1135 usb_deregister(&hid_driver);
1136 hiddev_exit();
1137 usbhid_quirks_exit();
1138 }
1139
1140 module_init(hid_init);
1141 module_exit(hid_exit);
1142
1143 MODULE_AUTHOR(DRIVER_AUTHOR);
1144 MODULE_DESCRIPTION(DRIVER_DESC);
1145 MODULE_LICENSE(DRIVER_LICENSE);
linux-next