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[POWERPC] Use menuconfig objects II - Macintosh
[wrt350n-kernel.git] / drivers / hid / usbhid / hid-core.c
blob91d610358d57e5206537953b0c12c29b5ca49081
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 "usbhid.h"
36
37 /*
38 * Version Information
39 */
40
41 #define DRIVER_VERSION "v2.6"
42 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina"
43 #define DRIVER_DESC "USB HID core driver"
44 #define DRIVER_LICENSE "GPL"
45
46 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
47 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
48 /*
49 * Module parameters.
50 */
51
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");
55
56 /* Quirks specified at module load time */
57 static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
58 module_param_array_named(quirks, quirks_param, charp, NULL, 0444);
59 MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying "
60 " quirks=vendorID:productID:quirks"
61 " where vendorID, productID, and quirks are all in"
62 " 0x-prefixed hex");
63 /*
64 * Input submission and I/O error handler.
65 */
66
67 static void hid_io_error(struct hid_device *hid);
68
69 /* Start up the input URB */
70 static int hid_start_in(struct hid_device *hid)
71 {
72 unsigned long flags;
73 int rc = 0;
74 struct usbhid_device *usbhid = hid->driver_data;
75
76 spin_lock_irqsave(&usbhid->inlock, flags);
77 if (hid->open > 0 && !test_bit(HID_SUSPENDED, &usbhid->iofl) &&
78 !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) {
79 rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC);
80 if (rc != 0)
81 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
82 }
83 spin_unlock_irqrestore(&usbhid->inlock, flags);
84 return rc;
85 }
86
87 /* I/O retry timer routine */
88 static void hid_retry_timeout(unsigned long _hid)
89 {
90 struct hid_device *hid = (struct hid_device *) _hid;
91 struct usbhid_device *usbhid = hid->driver_data;
92
93 dev_dbg(&usbhid->intf->dev, "retrying intr urb\n");
94 if (hid_start_in(hid))
95 hid_io_error(hid);
96 }
97
98 /* Workqueue routine to reset the device or clear a halt */
99 static void hid_reset(struct work_struct *work)
100 {
101 struct usbhid_device *usbhid =
102 container_of(work, struct usbhid_device, reset_work);
103 struct hid_device *hid = usbhid->hid;
104 int rc_lock, rc = 0;
105
106 if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) {
107 dev_dbg(&usbhid->intf->dev, "clear halt\n");
108 rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe);
109 clear_bit(HID_CLEAR_HALT, &usbhid->iofl);
110 hid_start_in(hid);
111 }
112
113 else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) {
114 dev_dbg(&usbhid->intf->dev, "resetting device\n");
115 rc = rc_lock = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf);
116 if (rc_lock >= 0) {
117 rc = usb_reset_composite_device(hid_to_usb_dev(hid), usbhid->intf);
118 if (rc_lock)
119 usb_unlock_device(hid_to_usb_dev(hid));
120 }
121 clear_bit(HID_RESET_PENDING, &usbhid->iofl);
122 }
123
124 switch (rc) {
125 case 0:
126 if (!test_bit(HID_IN_RUNNING, &usbhid->iofl))
127 hid_io_error(hid);
128 break;
129 default:
130 err("can't reset device, %s-%s/input%d, status %d",
131 hid_to_usb_dev(hid)->bus->bus_name,
132 hid_to_usb_dev(hid)->devpath,
133 usbhid->ifnum, rc);
134 /* FALLTHROUGH */
135 case -EHOSTUNREACH:
136 case -ENODEV:
137 case -EINTR:
138 break;
139 }
140 }
141
142 /* Main I/O error handler */
143 static void hid_io_error(struct hid_device *hid)
144 {
145 unsigned long flags;
146 struct usbhid_device *usbhid = hid->driver_data;
147
148 spin_lock_irqsave(&usbhid->inlock, flags);
149
150 /* Stop when disconnected */
151 if (usb_get_intfdata(usbhid->intf) == NULL)
152 goto done;
153
154 /* If it has been a while since the last error, we'll assume
155 * this a brand new error and reset the retry timeout. */
156 if (time_after(jiffies, usbhid->stop_retry + HZ/2))
157 usbhid->retry_delay = 0;
158
159 /* When an error occurs, retry at increasing intervals */
160 if (usbhid->retry_delay == 0) {
161 usbhid->retry_delay = 13; /* Then 26, 52, 104, 104, ... */
162 usbhid->stop_retry = jiffies + msecs_to_jiffies(1000);
163 } else if (usbhid->retry_delay < 100)
164 usbhid->retry_delay *= 2;
165
166 if (time_after(jiffies, usbhid->stop_retry)) {
167
168 /* Retries failed, so do a port reset */
169 if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) {
170 schedule_work(&usbhid->reset_work);
171 goto done;
172 }
173 }
174
175 mod_timer(&usbhid->io_retry,
176 jiffies + msecs_to_jiffies(usbhid->retry_delay));
177 done:
178 spin_unlock_irqrestore(&usbhid->inlock, flags);
179 }
180
181 /*
182 * Input interrupt completion handler.
183 */
184
185 static void hid_irq_in(struct urb *urb)
186 {
187 struct hid_device *hid = urb->context;
188 struct usbhid_device *usbhid = hid->driver_data;
189 int status;
190
191 switch (urb->status) {
192 case 0: /* success */
193 usbhid->retry_delay = 0;
194 hid_input_report(urb->context, HID_INPUT_REPORT,
195 urb->transfer_buffer,
196 urb->actual_length, 1);
197 break;
198 case -EPIPE: /* stall */
199 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
200 set_bit(HID_CLEAR_HALT, &usbhid->iofl);
201 schedule_work(&usbhid->reset_work);
202 return;
203 case -ECONNRESET: /* unlink */
204 case -ENOENT:
205 case -ESHUTDOWN: /* unplug */
206 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
207 return;
208 case -EILSEQ: /* protocol error or unplug */
209 case -EPROTO: /* protocol error or unplug */
210 case -ETIME: /* protocol error or unplug */
211 case -ETIMEDOUT: /* Should never happen, but... */
212 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
213 hid_io_error(hid);
214 return;
215 default: /* error */
216 warn("input irq status %d received", urb->status);
217 }
218
219 status = usb_submit_urb(urb, GFP_ATOMIC);
220 if (status) {
221 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
222 if (status != -EPERM) {
223 err("can't resubmit intr, %s-%s/input%d, status %d",
224 hid_to_usb_dev(hid)->bus->bus_name,
225 hid_to_usb_dev(hid)->devpath,
226 usbhid->ifnum, status);
227 hid_io_error(hid);
228 }
229 }
230 }
231
232 static int hid_submit_out(struct hid_device *hid)
233 {
234 struct hid_report *report;
235 struct usbhid_device *usbhid = hid->driver_data;
236
237 report = usbhid->out[usbhid->outtail];
238
239 hid_output_report(report, usbhid->outbuf);
240 usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
241 usbhid->urbout->dev = hid_to_usb_dev(hid);
242
243 dbg("submitting out urb");
244
245 if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) {
246 err("usb_submit_urb(out) failed");
247 return -1;
248 }
249
250 return 0;
251 }
252
253 static int hid_submit_ctrl(struct hid_device *hid)
254 {
255 struct hid_report *report;
256 unsigned char dir;
257 int len;
258 struct usbhid_device *usbhid = hid->driver_data;
259
260 report = usbhid->ctrl[usbhid->ctrltail].report;
261 dir = usbhid->ctrl[usbhid->ctrltail].dir;
262
263 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
264 if (dir == USB_DIR_OUT) {
265 hid_output_report(report, usbhid->ctrlbuf);
266 usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0);
267 usbhid->urbctrl->transfer_buffer_length = len;
268 } else {
269 int maxpacket, padlen;
270
271 usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
272 maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);
273 if (maxpacket > 0) {
274 padlen = (len + maxpacket - 1) / maxpacket;
275 padlen *= maxpacket;
276 if (padlen > usbhid->bufsize)
277 padlen = usbhid->bufsize;
278 } else
279 padlen = 0;
280 usbhid->urbctrl->transfer_buffer_length = padlen;
281 }
282 usbhid->urbctrl->dev = hid_to_usb_dev(hid);
283
284 usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
285 usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
286 usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
287 usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum);
288 usbhid->cr->wLength = cpu_to_le16(len);
289
290 dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
291 usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
292 usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength);
293
294 if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) {
295 err("usb_submit_urb(ctrl) failed");
296 return -1;
297 }
298
299 return 0;
300 }
301
302 /*
303 * Output interrupt completion handler.
304 */
305
306 static void hid_irq_out(struct urb *urb)
307 {
308 struct hid_device *hid = urb->context;
309 struct usbhid_device *usbhid = hid->driver_data;
310 unsigned long flags;
311 int unplug = 0;
312
313 switch (urb->status) {
314 case 0: /* success */
315 break;
316 case -ESHUTDOWN: /* unplug */
317 unplug = 1;
318 case -EILSEQ: /* protocol error or unplug */
319 case -EPROTO: /* protocol error or unplug */
320 case -ECONNRESET: /* unlink */
321 case -ENOENT:
322 break;
323 default: /* error */
324 warn("output irq status %d received", urb->status);
325 }
326
327 spin_lock_irqsave(&usbhid->outlock, flags);
328
329 if (unplug)
330 usbhid->outtail = usbhid->outhead;
331 else
332 usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
333
334 if (usbhid->outhead != usbhid->outtail) {
335 if (hid_submit_out(hid)) {
336 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
337 wake_up(&hid->wait);
338 }
339 spin_unlock_irqrestore(&usbhid->outlock, flags);
340 return;
341 }
342
343 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
344 spin_unlock_irqrestore(&usbhid->outlock, flags);
345 wake_up(&hid->wait);
346 }
347
348 /*
349 * Control pipe completion handler.
350 */
351
352 static void hid_ctrl(struct urb *urb)
353 {
354 struct hid_device *hid = urb->context;
355 struct usbhid_device *usbhid = hid->driver_data;
356 unsigned long flags;
357 int unplug = 0;
358
359 spin_lock_irqsave(&usbhid->ctrllock, flags);
360
361 switch (urb->status) {
362 case 0: /* success */
363 if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN)
364 hid_input_report(urb->context, usbhid->ctrl[usbhid->ctrltail].report->type,
365 urb->transfer_buffer, urb->actual_length, 0);
366 break;
367 case -ESHUTDOWN: /* unplug */
368 unplug = 1;
369 case -EILSEQ: /* protocol error or unplug */
370 case -EPROTO: /* protocol error or unplug */
371 case -ECONNRESET: /* unlink */
372 case -ENOENT:
373 case -EPIPE: /* report not available */
374 break;
375 default: /* error */
376 warn("ctrl urb status %d received", urb->status);
377 }
378
379 if (unplug)
380 usbhid->ctrltail = usbhid->ctrlhead;
381 else
382 usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
383
384 if (usbhid->ctrlhead != usbhid->ctrltail) {
385 if (hid_submit_ctrl(hid)) {
386 clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
387 wake_up(&hid->wait);
388 }
389 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
390 return;
391 }
392
393 clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
394 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
395 wake_up(&hid->wait);
396 }
397
398 void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
399 {
400 int head;
401 unsigned long flags;
402 struct usbhid_device *usbhid = hid->driver_data;
403
404 if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
405 return;
406
407 if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
408
409 spin_lock_irqsave(&usbhid->outlock, flags);
410
411 if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) {
412 spin_unlock_irqrestore(&usbhid->outlock, flags);
413 warn("output queue full");
414 return;
415 }
416
417 usbhid->out[usbhid->outhead] = report;
418 usbhid->outhead = head;
419
420 if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl))
421 if (hid_submit_out(hid))
422 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
423
424 spin_unlock_irqrestore(&usbhid->outlock, flags);
425 return;
426 }
427
428 spin_lock_irqsave(&usbhid->ctrllock, flags);
429
430 if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) {
431 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
432 warn("control queue full");
433 return;
434 }
435
436 usbhid->ctrl[usbhid->ctrlhead].report = report;
437 usbhid->ctrl[usbhid->ctrlhead].dir = dir;
438 usbhid->ctrlhead = head;
439
440 if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl))
441 if (hid_submit_ctrl(hid))
442 clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
443
444 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
445 }
446
447 static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
448 {
449 struct hid_device *hid = dev->private;
450 struct hid_field *field;
451 int offset;
452
453 if (type == EV_FF)
454 return input_ff_event(dev, type, code, value);
455
456 if (type != EV_LED)
457 return -1;
458
459 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
460 warn("event field not found");
461 return -1;
462 }
463
464 hid_set_field(field, offset, value);
465 usbhid_submit_report(hid, field->report, USB_DIR_OUT);
466
467 return 0;
468 }
469
470 int usbhid_wait_io(struct hid_device *hid)
471 {
472 struct usbhid_device *usbhid = hid->driver_data;
473
474 if (!wait_event_timeout(hid->wait, (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) &&
475 !test_bit(HID_OUT_RUNNING, &usbhid->iofl)),
476 10*HZ)) {
477 dbg("timeout waiting for ctrl or out queue to clear");
478 return -1;
479 }
480
481 return 0;
482 }
483
484 static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
485 {
486 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
487 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report,
488 ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
489 }
490
491 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
492 unsigned char type, void *buf, int size)
493 {
494 int result, retries = 4;
495
496 memset(buf, 0, size);
497
498 do {
499 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
500 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
501 (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
502 retries--;
503 } while (result < size && retries);
504 return result;
505 }
506
507 int usbhid_open(struct hid_device *hid)
508 {
509 ++hid->open;
510 if (hid_start_in(hid))
511 hid_io_error(hid);
512 return 0;
513 }
514
515 void usbhid_close(struct hid_device *hid)
516 {
517 struct usbhid_device *usbhid = hid->driver_data;
518
519 if (!--hid->open)
520 usb_kill_urb(usbhid->urbin);
521 }
522
523 /*
524 * Initialize all reports
525 */
526
527 void usbhid_init_reports(struct hid_device *hid)
528 {
529 struct hid_report *report;
530 struct usbhid_device *usbhid = hid->driver_data;
531 int err, ret;
532
533 list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list)
534 usbhid_submit_report(hid, report, USB_DIR_IN);
535
536 list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
537 usbhid_submit_report(hid, report, USB_DIR_IN);
538
539 err = 0;
540 ret = usbhid_wait_io(hid);
541 while (ret) {
542 err |= ret;
543 if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl))
544 usb_kill_urb(usbhid->urbctrl);
545 if (test_bit(HID_OUT_RUNNING, &usbhid->iofl))
546 usb_kill_urb(usbhid->urbout);
547 ret = usbhid_wait_io(hid);
548 }
549
550 if (err)
551 warn("timeout initializing reports");
552 }
553
554 /*
555 * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01).
556 */
557 static int hid_find_field_early(struct hid_device *hid, unsigned int page,
558 unsigned int hid_code, struct hid_field **pfield)
559 {
560 struct hid_report *report;
561 struct hid_field *field;
562 struct hid_usage *usage;
563 int i, j;
564
565 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
566 for (i = 0; i < report->maxfield; i++) {
567 field = report->field[i];
568 for (j = 0; j < field->maxusage; j++) {
569 usage = &field->usage[j];
570 if ((usage->hid & HID_USAGE_PAGE) == page &&
571 (usage->hid & 0xFFFF) == hid_code) {
572 *pfield = field;
573 return j;
574 }
575 }
576 }
577 }
578 return -1;
579 }
580
581 static void usbhid_set_leds(struct hid_device *hid)
582 {
583 struct hid_field *field;
584 int offset;
585
586 if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) {
587 hid_set_field(field, offset, 0);
588 usbhid_submit_report(hid, field->report, USB_DIR_OUT);
589 }
590 }
591
592 /*
593 * Traverse the supplied list of reports and find the longest
594 */
595 static void hid_find_max_report(struct hid_device *hid, unsigned int type, int *max)
596 {
597 struct hid_report *report;
598 int size;
599
600 list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
601 size = ((report->size - 1) >> 3) + 1;
602 if (type == HID_INPUT_REPORT && hid->report_enum[type].numbered)
603 size++;
604 if (*max < size)
605 *max = size;
606 }
607 }
608
609 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
610 {
611 struct usbhid_device *usbhid = hid->driver_data;
612
613 if (!(usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->inbuf_dma)))
614 return -1;
615 if (!(usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->outbuf_dma)))
616 return -1;
617 if (!(usbhid->cr = usb_buffer_alloc(dev, sizeof(*(usbhid->cr)), GFP_ATOMIC, &usbhid->cr_dma)))
618 return -1;
619 if (!(usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->ctrlbuf_dma)))
620 return -1;
621
622 return 0;
623 }
624
625 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
626 {
627 struct usbhid_device *usbhid = hid->driver_data;
628
629 if (usbhid->inbuf)
630 usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma);
631 if (usbhid->outbuf)
632 usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma);
633 if (usbhid->cr)
634 usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma);
635 if (usbhid->ctrlbuf)
636 usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma);
637 }
638
639 /*
640 * Cherry Cymotion keyboard have an invalid HID report descriptor,
641 * that needs fixing before we can parse it.
642 */
643
644 static void hid_fixup_cymotion_descriptor(char *rdesc, int rsize)
645 {
646 if (rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
647 info("Fixing up Cherry Cymotion report descriptor");
648 rdesc[11] = rdesc[16] = 0xff;
649 rdesc[12] = rdesc[17] = 0x03;
650 }
651 }
652
653 /*
654 * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
655 * to "operational". Without this, the ps3 controller will not report any
656 * events.
657 */
658 static void hid_fixup_sony_ps3_controller(struct usb_device *dev, int ifnum)
659 {
660 int result;
661 char *buf = kmalloc(18, GFP_KERNEL);
662
663 if (!buf)
664 return;
665
666 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
667 HID_REQ_GET_REPORT,
668 USB_DIR_IN | USB_TYPE_CLASS |
669 USB_RECIP_INTERFACE,
670 (3 << 8) | 0xf2, ifnum, buf, 17,
671 USB_CTRL_GET_TIMEOUT);
672
673 if (result < 0)
674 err("%s failed: %d\n", __func__, result);
675
676 kfree(buf);
677 }
678
679 /*
680 * Certain Logitech keyboards send in report #3 keys which are far
681 * above the logical maximum described in descriptor. This extends
682 * the original value of 0x28c of logical maximum to 0x104d
683 */
684 static void hid_fixup_logitech_descriptor(unsigned char *rdesc, int rsize)
685 {
686 if (rsize >= 90 && rdesc[83] == 0x26
687 && rdesc[84] == 0x8c
688 && rdesc[85] == 0x02) {
689 info("Fixing up Logitech keyboard report descriptor");
690 rdesc[84] = rdesc[89] = 0x4d;
691 rdesc[85] = rdesc[90] = 0x10;
692 }
693 }
694
695 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
696 {
697 struct usb_host_interface *interface = intf->cur_altsetting;
698 struct usb_device *dev = interface_to_usbdev (intf);
699 struct hid_descriptor *hdesc;
700 struct hid_device *hid;
701 u32 quirks = 0;
702 unsigned rsize = 0;
703 char *rdesc;
704 int n, len, insize = 0;
705 struct usbhid_device *usbhid;
706
707 quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
708 le16_to_cpu(dev->descriptor.idProduct));
709
710 /* Many keyboards and mice don't like to be polled for reports,
711 * so we will always set the HID_QUIRK_NOGET flag for them. */
712 if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
713 if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD ||
714 interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)
715 quirks |= HID_QUIRK_NOGET;
716 }
717
718 if (quirks & HID_QUIRK_IGNORE)
719 return NULL;
720
721 if ((quirks & HID_QUIRK_IGNORE_MOUSE) &&
722 (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE))
723 return NULL;
724
725
726 if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) &&
727 (!interface->desc.bNumEndpoints ||
728 usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
729 dbg("class descriptor not present\n");
730 return NULL;
731 }
732
733 for (n = 0; n < hdesc->bNumDescriptors; n++)
734 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
735 rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
736
737 if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
738 dbg("weird size of report descriptor (%u)", rsize);
739 return NULL;
740 }
741
742 if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
743 dbg("couldn't allocate rdesc memory");
744 return NULL;
745 }
746
747 hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0);
748
749 if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
750 dbg("reading report descriptor failed");
751 kfree(rdesc);
752 return NULL;
753 }
754
755 if ((quirks & HID_QUIRK_CYMOTION))
756 hid_fixup_cymotion_descriptor(rdesc, rsize);
757
758 if (quirks & HID_QUIRK_LOGITECH_DESCRIPTOR)
759 hid_fixup_logitech_descriptor(rdesc, rsize);
760
761 #ifdef CONFIG_HID_DEBUG
762 printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
763 for (n = 0; n < rsize; n++)
764 printk(" %02x", (unsigned char) rdesc[n]);
765 printk("\n");
766 #endif
767
768 if (!(hid = hid_parse_report(rdesc, n))) {
769 dbg("parsing report descriptor failed");
770 kfree(rdesc);
771 return NULL;
772 }
773
774 kfree(rdesc);
775 hid->quirks = quirks;
776
777 if (!(usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL)))
778 goto fail;
779
780 hid->driver_data = usbhid;
781 usbhid->hid = hid;
782
783 usbhid->bufsize = HID_MIN_BUFFER_SIZE;
784 hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize);
785 hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize);
786 hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize);
787
788 if (usbhid->bufsize > HID_MAX_BUFFER_SIZE)
789 usbhid->bufsize = HID_MAX_BUFFER_SIZE;
790
791 hid_find_max_report(hid, HID_INPUT_REPORT, &insize);
792
793 if (insize > HID_MAX_BUFFER_SIZE)
794 insize = HID_MAX_BUFFER_SIZE;
795
796 if (hid_alloc_buffers(dev, hid)) {
797 hid_free_buffers(dev, hid);
798 goto fail;
799 }
800
801 for (n = 0; n < interface->desc.bNumEndpoints; n++) {
802
803 struct usb_endpoint_descriptor *endpoint;
804 int pipe;
805 int interval;
806
807 endpoint = &interface->endpoint[n].desc;
808 if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
809 continue;
810
811 interval = endpoint->bInterval;
812
813 /* Change the polling interval of mice. */
814 if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
815 interval = hid_mousepoll_interval;
816
817 if (usb_endpoint_dir_in(endpoint)) {
818 if (usbhid->urbin)
819 continue;
820 if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
821 goto fail;
822 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
823 usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize,
824 hid_irq_in, hid, interval);
825 usbhid->urbin->transfer_dma = usbhid->inbuf_dma;
826 usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
827 } else {
828 if (usbhid->urbout)
829 continue;
830 if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
831 goto fail;
832 pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
833 usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0,
834 hid_irq_out, hid, interval);
835 usbhid->urbout->transfer_dma = usbhid->outbuf_dma;
836 usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
837 }
838 }
839
840 if (!usbhid->urbin) {
841 err("couldn't find an input interrupt endpoint");
842 goto fail;
843 }
844
845 init_waitqueue_head(&hid->wait);
846
847 INIT_WORK(&usbhid->reset_work, hid_reset);
848 setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid);
849
850 spin_lock_init(&usbhid->inlock);
851 spin_lock_init(&usbhid->outlock);
852 spin_lock_init(&usbhid->ctrllock);
853
854 hid->version = le16_to_cpu(hdesc->bcdHID);
855 hid->country = hdesc->bCountryCode;
856 hid->dev = &intf->dev;
857 usbhid->intf = intf;
858 usbhid->ifnum = interface->desc.bInterfaceNumber;
859
860 hid->name[0] = 0;
861
862 if (dev->manufacturer)
863 strlcpy(hid->name, dev->manufacturer, sizeof(hid->name));
864
865 if (dev->product) {
866 if (dev->manufacturer)
867 strlcat(hid->name, " ", sizeof(hid->name));
868 strlcat(hid->name, dev->product, sizeof(hid->name));
869 }
870
871 if (!strlen(hid->name))
872 snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x",
873 le16_to_cpu(dev->descriptor.idVendor),
874 le16_to_cpu(dev->descriptor.idProduct));
875
876 hid->bus = BUS_USB;
877 hid->vendor = le16_to_cpu(dev->descriptor.idVendor);
878 hid->product = le16_to_cpu(dev->descriptor.idProduct);
879
880 usb_make_path(dev, hid->phys, sizeof(hid->phys));
881 strlcat(hid->phys, "/input", sizeof(hid->phys));
882 len = strlen(hid->phys);
883 if (len < sizeof(hid->phys) - 1)
884 snprintf(hid->phys + len, sizeof(hid->phys) - len,
885 "%d", intf->altsetting[0].desc.bInterfaceNumber);
886
887 if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
888 hid->uniq[0] = 0;
889
890 usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
891 if (!usbhid->urbctrl)
892 goto fail;
893
894 usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr,
895 usbhid->ctrlbuf, 1, hid_ctrl, hid);
896 usbhid->urbctrl->setup_dma = usbhid->cr_dma;
897 usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma;
898 usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
899 hid->hidinput_input_event = usb_hidinput_input_event;
900 hid->hid_open = usbhid_open;
901 hid->hid_close = usbhid_close;
902 #ifdef CONFIG_USB_HIDDEV
903 hid->hiddev_hid_event = hiddev_hid_event;
904 hid->hiddev_report_event = hiddev_report_event;
905 #endif
906 return hid;
907
908 fail:
909 usb_free_urb(usbhid->urbin);
910 usb_free_urb(usbhid->urbout);
911 usb_free_urb(usbhid->urbctrl);
912 hid_free_buffers(dev, hid);
913 hid_free_device(hid);
914
915 return NULL;
916 }
917
918 static void hid_disconnect(struct usb_interface *intf)
919 {
920 struct hid_device *hid = usb_get_intfdata (intf);
921 struct usbhid_device *usbhid;
922
923 if (!hid)
924 return;
925
926 usbhid = hid->driver_data;
927
928 spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
929 usb_set_intfdata(intf, NULL);
930 spin_unlock_irq(&usbhid->inlock);
931 usb_kill_urb(usbhid->urbin);
932 usb_kill_urb(usbhid->urbout);
933 usb_kill_urb(usbhid->urbctrl);
934
935 del_timer_sync(&usbhid->io_retry);
936 flush_scheduled_work();
937
938 if (hid->claimed & HID_CLAIMED_INPUT)
939 hidinput_disconnect(hid);
940 if (hid->claimed & HID_CLAIMED_HIDDEV)
941 hiddev_disconnect(hid);
942
943 usb_free_urb(usbhid->urbin);
944 usb_free_urb(usbhid->urbctrl);
945 usb_free_urb(usbhid->urbout);
946
947 hid_free_buffers(hid_to_usb_dev(hid), hid);
948 hid_free_device(hid);
949 }
950
951 static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
952 {
953 struct hid_device *hid;
954 char path[64];
955 int i;
956 char *c;
957
958 dbg("HID probe called for ifnum %d",
959 intf->altsetting->desc.bInterfaceNumber);
960
961 if (!(hid = usb_hid_configure(intf)))
962 return -ENODEV;
963
964 usbhid_init_reports(hid);
965 hid_dump_device(hid);
966 if (hid->quirks & HID_QUIRK_RESET_LEDS)
967 usbhid_set_leds(hid);
968
969 if (!hidinput_connect(hid))
970 hid->claimed |= HID_CLAIMED_INPUT;
971 if (!hiddev_connect(hid))
972 hid->claimed |= HID_CLAIMED_HIDDEV;
973
974 usb_set_intfdata(intf, hid);
975
976 if (!hid->claimed) {
977 printk ("HID device not claimed by input or hiddev\n");
978 hid_disconnect(intf);
979 return -ENODEV;
980 }
981
982 if ((hid->claimed & HID_CLAIMED_INPUT))
983 hid_ff_init(hid);
984
985 if (hid->quirks & HID_QUIRK_SONY_PS3_CONTROLLER)
986 hid_fixup_sony_ps3_controller(interface_to_usbdev(intf),
987 intf->cur_altsetting->desc.bInterfaceNumber);
988
989 printk(KERN_INFO);
990
991 if (hid->claimed & HID_CLAIMED_INPUT)
992 printk("input");
993 if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
994 printk(",");
995 if (hid->claimed & HID_CLAIMED_HIDDEV)
996 printk("hiddev%d", hid->minor);
997
998 c = "Device";
999 for (i = 0; i < hid->maxcollection; i++) {
1000 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1001 (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1002 (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1003 c = hid_types[hid->collection[i].usage & 0xffff];
1004 break;
1005 }
1006 }
1007
1008 usb_make_path(interface_to_usbdev(intf), path, 63);
1009
1010 printk(": USB HID v%x.%02x %s [%s] on %s\n",
1011 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1012
1013 return 0;
1014 }
1015
1016 static int hid_suspend(struct usb_interface *intf, pm_message_t message)
1017 {
1018 struct hid_device *hid = usb_get_intfdata (intf);
1019 struct usbhid_device *usbhid = hid->driver_data;
1020
1021 spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
1022 set_bit(HID_SUSPENDED, &usbhid->iofl);
1023 spin_unlock_irq(&usbhid->inlock);
1024 del_timer(&usbhid->io_retry);
1025 usb_kill_urb(usbhid->urbin);
1026 dev_dbg(&intf->dev, "suspend\n");
1027 return 0;
1028 }
1029
1030 static int hid_resume(struct usb_interface *intf)
1031 {
1032 struct hid_device *hid = usb_get_intfdata (intf);
1033 struct usbhid_device *usbhid = hid->driver_data;
1034 int status;
1035
1036 clear_bit(HID_SUSPENDED, &usbhid->iofl);
1037 usbhid->retry_delay = 0;
1038 status = hid_start_in(hid);
1039 dev_dbg(&intf->dev, "resume status %d\n", status);
1040 return status;
1041 }
1042
1043 /* Treat USB reset pretty much the same as suspend/resume */
1044 static void hid_pre_reset(struct usb_interface *intf)
1045 {
1046 /* FIXME: What if the interface is already suspended? */
1047 hid_suspend(intf, PMSG_ON);
1048 }
1049
1050 static void hid_post_reset(struct usb_interface *intf)
1051 {
1052 struct usb_device *dev = interface_to_usbdev (intf);
1053
1054 hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
1055 /* FIXME: Any more reinitialization needed? */
1056
1057 hid_resume(intf);
1058 }
1059
1060 static struct usb_device_id hid_usb_ids [] = {
1061 { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1062 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1063 { } /* Terminating entry */
1064 };
1065
1066 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1067
1068 static struct usb_driver hid_driver = {
1069 .name = "usbhid",
1070 .probe = hid_probe,
1071 .disconnect = hid_disconnect,
1072 .suspend = hid_suspend,
1073 .resume = hid_resume,
1074 .pre_reset = hid_pre_reset,
1075 .post_reset = hid_post_reset,
1076 .id_table = hid_usb_ids,
1077 };
1078
1079 static int __init hid_init(void)
1080 {
1081 int retval;
1082 retval = usbhid_quirks_init(quirks_param);
1083 if (retval)
1084 goto usbhid_quirks_init_fail;
1085 retval = hiddev_init();
1086 if (retval)
1087 goto hiddev_init_fail;
1088 retval = usb_register(&hid_driver);
1089 if (retval)
1090 goto usb_register_fail;
1091 info(DRIVER_VERSION ":" DRIVER_DESC);
1092
1093 return 0;
1094 usb_register_fail:
1095 hiddev_exit();
1096 hiddev_init_fail:
1097 usbhid_quirks_exit();
1098 usbhid_quirks_init_fail:
1099 return retval;
1100 }
1101
1102 static void __exit hid_exit(void)
1103 {
1104 usb_deregister(&hid_driver);
1105 hiddev_exit();
1106 usbhid_quirks_exit();
1107 }
1108
1109 module_init(hid_init);
1110 module_exit(hid_exit);
1111
1112 MODULE_AUTHOR(DRIVER_AUTHOR);
1113 MODULE_DESCRIPTION(DRIVER_DESC);
1114 MODULE_LICENSE(DRIVER_LICENSE);
WRT350N Kernel Patches