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19#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21#include <linux/device.h>
22#include <linux/module.h>
23#include <linux/usb.h>
24#include <linux/mutex.h>
25#include <linux/hid.h>
26#include <sound/core.h>
27#include <sound/initval.h>
28#include <sound/rawmidi.h>
29#include "hid-ids.h"
30
31
32#define pk_debug(format, arg...) \
33 pr_debug("hid-prodikeys: " format "\n" , ## arg)
34#define pk_error(format, arg...) \
35 pr_err("hid-prodikeys: " format "\n" , ## arg)
36
37struct pcmidi_snd;
38
39struct pk_device {
40 unsigned long quirks;
41
42 struct hid_device *hdev;
43 struct pcmidi_snd *pm;
44};
45
46struct pcmidi_sustain {
47 unsigned long in_use;
48 struct pcmidi_snd *pm;
49 struct timer_list timer;
50 unsigned char status;
51 unsigned char note;
52 unsigned char velocity;
53};
54
55#define PCMIDI_SUSTAINED_MAX 32
56struct pcmidi_snd {
57 struct pk_device *pk;
58 unsigned short ifnum;
59 struct hid_report *pcmidi_report6;
60 struct input_dev *input_ep82;
61 unsigned short midi_mode;
62 unsigned short midi_sustain_mode;
63 unsigned short midi_sustain;
64 unsigned short midi_channel;
65 short midi_octave;
66 struct pcmidi_sustain sustained_notes[PCMIDI_SUSTAINED_MAX];
67 unsigned short fn_state;
68 unsigned short last_key[24];
69 spinlock_t rawmidi_in_lock;
70 struct snd_card *card;
71 struct snd_rawmidi *rwmidi;
72 struct snd_rawmidi_substream *in_substream;
73 struct snd_rawmidi_substream *out_substream;
74 unsigned long in_triggered;
75 unsigned long out_active;
76};
77
78#define PK_QUIRK_NOGET 0x00010000
79#define PCMIDI_MIDDLE_C 60
80#define PCMIDI_CHANNEL_MIN 0
81#define PCMIDI_CHANNEL_MAX 15
82#define PCMIDI_OCTAVE_MIN (-2)
83#define PCMIDI_OCTAVE_MAX 2
84#define PCMIDI_SUSTAIN_MIN 0
85#define PCMIDI_SUSTAIN_MAX 5000
86
87static const char shortname[] = "PC-MIDI";
88static const char longname[] = "Prodikeys PC-MIDI Keyboard";
89
90static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
91static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
92static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
93
94module_param_array(index, int, NULL, 0444);
95module_param_array(id, charp, NULL, 0444);
96module_param_array(enable, bool, NULL, 0444);
97MODULE_PARM_DESC(index, "Index value for the PC-MIDI virtual audio driver");
98MODULE_PARM_DESC(id, "ID string for the PC-MIDI virtual audio driver");
99MODULE_PARM_DESC(enable, "Enable for the PC-MIDI virtual audio driver");
100
101
102
103static ssize_t show_channel(struct device *dev,
104 struct device_attribute *attr, char *buf)
105{
106 struct hid_device *hdev = to_hid_device(dev);
107 struct pk_device *pk = hid_get_drvdata(hdev);
108
109 dbg_hid("pcmidi sysfs read channel=%u\n", pk->pm->midi_channel);
110
111 return sprintf(buf, "%u (min:%u, max:%u)\n", pk->pm->midi_channel,
112 PCMIDI_CHANNEL_MIN, PCMIDI_CHANNEL_MAX);
113}
114
115
116static ssize_t store_channel(struct device *dev,
117 struct device_attribute *attr, const char *buf, size_t count)
118{
119 struct hid_device *hdev = to_hid_device(dev);
120 struct pk_device *pk = hid_get_drvdata(hdev);
121
122 unsigned channel = 0;
123
124 if (sscanf(buf, "%u", &channel) > 0 && channel <= PCMIDI_CHANNEL_MAX) {
125 dbg_hid("pcmidi sysfs write channel=%u\n", channel);
126 pk->pm->midi_channel = channel;
127 return strlen(buf);
128 }
129 return -EINVAL;
130}
131
132static DEVICE_ATTR(channel, S_IRUGO | S_IWUSR | S_IWGRP , show_channel,
133 store_channel);
134
135static struct device_attribute *sysfs_device_attr_channel = {
136 &dev_attr_channel,
137 };
138
139
140static ssize_t show_sustain(struct device *dev,
141 struct device_attribute *attr, char *buf)
142{
143 struct hid_device *hdev = to_hid_device(dev);
144 struct pk_device *pk = hid_get_drvdata(hdev);
145
146 dbg_hid("pcmidi sysfs read sustain=%u\n", pk->pm->midi_sustain);
147
148 return sprintf(buf, "%u (off:%u, max:%u (ms))\n", pk->pm->midi_sustain,
149 PCMIDI_SUSTAIN_MIN, PCMIDI_SUSTAIN_MAX);
150}
151
152
153static ssize_t store_sustain(struct device *dev,
154 struct device_attribute *attr, const char *buf, size_t count)
155{
156 struct hid_device *hdev = to_hid_device(dev);
157 struct pk_device *pk = hid_get_drvdata(hdev);
158
159 unsigned sustain = 0;
160
161 if (sscanf(buf, "%u", &sustain) > 0 && sustain <= PCMIDI_SUSTAIN_MAX) {
162 dbg_hid("pcmidi sysfs write sustain=%u\n", sustain);
163 pk->pm->midi_sustain = sustain;
164 pk->pm->midi_sustain_mode =
165 (0 == sustain || !pk->pm->midi_mode) ? 0 : 1;
166 return strlen(buf);
167 }
168 return -EINVAL;
169}
170
171static DEVICE_ATTR(sustain, S_IRUGO | S_IWUSR | S_IWGRP, show_sustain,
172 store_sustain);
173
174static struct device_attribute *sysfs_device_attr_sustain = {
175 &dev_attr_sustain,
176 };
177
178
179static ssize_t show_octave(struct device *dev,
180 struct device_attribute *attr, char *buf)
181{
182 struct hid_device *hdev = to_hid_device(dev);
183 struct pk_device *pk = hid_get_drvdata(hdev);
184
185 dbg_hid("pcmidi sysfs read octave=%d\n", pk->pm->midi_octave);
186
187 return sprintf(buf, "%d (min:%d, max:%d)\n", pk->pm->midi_octave,
188 PCMIDI_OCTAVE_MIN, PCMIDI_OCTAVE_MAX);
189}
190
191
192static ssize_t store_octave(struct device *dev,
193 struct device_attribute *attr, const char *buf, size_t count)
194{
195 struct hid_device *hdev = to_hid_device(dev);
196 struct pk_device *pk = hid_get_drvdata(hdev);
197
198 int octave = 0;
199
200 if (sscanf(buf, "%d", &octave) > 0 &&
201 octave >= PCMIDI_OCTAVE_MIN && octave <= PCMIDI_OCTAVE_MAX) {
202 dbg_hid("pcmidi sysfs write octave=%d\n", octave);
203 pk->pm->midi_octave = octave;
204 return strlen(buf);
205 }
206 return -EINVAL;
207}
208
209static DEVICE_ATTR(octave, S_IRUGO | S_IWUSR | S_IWGRP, show_octave,
210 store_octave);
211
212static struct device_attribute *sysfs_device_attr_octave = {
213 &dev_attr_octave,
214 };
215
216
217static void pcmidi_send_note(struct pcmidi_snd *pm,
218 unsigned char status, unsigned char note, unsigned char velocity)
219{
220 unsigned long flags;
221 unsigned char buffer[3];
222
223 buffer[0] = status;
224 buffer[1] = note;
225 buffer[2] = velocity;
226
227 spin_lock_irqsave(&pm->rawmidi_in_lock, flags);
228
229 if (!pm->in_substream)
230 goto drop_note;
231 if (!test_bit(pm->in_substream->number, &pm->in_triggered))
232 goto drop_note;
233
234 snd_rawmidi_receive(pm->in_substream, buffer, 3);
235
236drop_note:
237 spin_unlock_irqrestore(&pm->rawmidi_in_lock, flags);
238
239 return;
240}
241
242static void pcmidi_sustained_note_release(unsigned long data)
243{
244 struct pcmidi_sustain *pms = (struct pcmidi_sustain *)data;
245
246 pcmidi_send_note(pms->pm, pms->status, pms->note, pms->velocity);
247 pms->in_use = 0;
248}
249
250static void init_sustain_timers(struct pcmidi_snd *pm)
251{
252 struct pcmidi_sustain *pms;
253 unsigned i;
254
255 for (i = 0; i < PCMIDI_SUSTAINED_MAX; i++) {
256 pms = &pm->sustained_notes[i];
257 pms->in_use = 0;
258 pms->pm = pm;
259 setup_timer(&pms->timer, pcmidi_sustained_note_release,
260 (unsigned long)pms);
261 }
262}
263
264static void stop_sustain_timers(struct pcmidi_snd *pm)
265{
266 struct pcmidi_sustain *pms;
267 unsigned i;
268
269 for (i = 0; i < PCMIDI_SUSTAINED_MAX; i++) {
270 pms = &pm->sustained_notes[i];
271 pms->in_use = 1;
272 del_timer_sync(&pms->timer);
273 }
274}
275
276static int pcmidi_get_output_report(struct pcmidi_snd *pm)
277{
278 struct hid_device *hdev = pm->pk->hdev;
279 struct hid_report *report;
280
281 list_for_each_entry(report,
282 &hdev->report_enum[HID_OUTPUT_REPORT].report_list, list) {
283 if (!(6 == report->id))
284 continue;
285
286 if (report->maxfield < 1) {
287 hid_err(hdev, "output report is empty\n");
288 break;
289 }
290 if (report->field[0]->report_count != 2) {
291 hid_err(hdev, "field count too low\n");
292 break;
293 }
294 pm->pcmidi_report6 = report;
295 return 0;
296 }
297
298 return -ENODEV;
299}
300
301static void pcmidi_submit_output_report(struct pcmidi_snd *pm, int state)
302{
303 struct hid_device *hdev = pm->pk->hdev;
304 struct hid_report *report = pm->pcmidi_report6;
305 report->field[0]->value[0] = 0x01;
306 report->field[0]->value[1] = state;
307
308 hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
309}
310
311static int pcmidi_handle_report1(struct pcmidi_snd *pm, u8 *data)
312{
313 u32 bit_mask;
314
315 bit_mask = data[1];
316 bit_mask = (bit_mask << 8) | data[2];
317 bit_mask = (bit_mask << 8) | data[3];
318
319 dbg_hid("pcmidi mode: %d\n", pm->midi_mode);
320
321
322 if (pm->midi_mode && bit_mask == 0x004000) {
323
324 pm->midi_octave--;
325 if (pm->midi_octave < -2)
326 pm->midi_octave = -2;
327 dbg_hid("pcmidi mode: %d octave: %d\n",
328 pm->midi_mode, pm->midi_octave);
329 return 1;
330 }
331
332 else if (pm->midi_mode && bit_mask == 0x000004) {
333
334 pm->midi_sustain_mode ^= 0x1;
335 return 1;
336 }
337
338 return 0;
339}
340
341static int pcmidi_handle_report3(struct pcmidi_snd *pm, u8 *data, int size)
342{
343 struct pcmidi_sustain *pms;
344 unsigned i, j;
345 unsigned char status, note, velocity;
346
347 unsigned num_notes = (size-1)/2;
348 for (j = 0; j < num_notes; j++) {
349 note = data[j*2+1];
350 velocity = data[j*2+2];
351
352 if (note < 0x81) {
353 status = 128 + 16 + pm->midi_channel;
354 note = note - 0x54 + PCMIDI_MIDDLE_C +
355 (pm->midi_octave * 12);
356 if (0 == velocity)
357 velocity = 1;
358 } else {
359 status = 128 + pm->midi_channel;
360 note = note - 0x94 + PCMIDI_MIDDLE_C +
361 (pm->midi_octave*12);
362
363 if (pm->midi_sustain_mode) {
364 for (i = 0; i < PCMIDI_SUSTAINED_MAX; i++) {
365 pms = &pm->sustained_notes[i];
366 if (!pms->in_use) {
367 pms->status = status;
368 pms->note = note;
369 pms->velocity = velocity;
370 pms->in_use = 1;
371
372 mod_timer(&pms->timer,
373 jiffies +
374 msecs_to_jiffies(pm->midi_sustain));
375 return 1;
376 }
377 }
378 }
379 }
380 pcmidi_send_note(pm, status, note, velocity);
381 }
382
383 return 1;
384}
385
386static int pcmidi_handle_report4(struct pcmidi_snd *pm, u8 *data)
387{
388 unsigned key;
389 u32 bit_mask;
390 u32 bit_index;
391
392 bit_mask = data[1];
393 bit_mask = (bit_mask << 8) | data[2];
394 bit_mask = (bit_mask << 8) | data[3];
395
396
397 for (bit_index = 0; bit_index < 24; bit_index++) {
398 if (!((0x01 << bit_index) & bit_mask)) {
399 input_event(pm->input_ep82, EV_KEY,
400 pm->last_key[bit_index], 0);
401 pm->last_key[bit_index] = 0;
402 }
403 }
404
405
406 for (bit_index = 0; bit_index < 24; bit_index++) {
407 key = 0;
408 switch ((0x01 << bit_index) & bit_mask) {
409 case 0x000010:
410 pm->fn_state ^= 0x000010;
411 if (pm->fn_state)
412 pcmidi_submit_output_report(pm, 0xc5);
413 else
414 pcmidi_submit_output_report(pm, 0xc6);
415 continue;
416 case 0x020000:
417 pcmidi_submit_output_report(pm, 0xc1);
418 pm->midi_mode ^= 0x01;
419
420 dbg_hid("pcmidi mode: %d\n", pm->midi_mode);
421 continue;
422 case 0x100000:
423 dbg_hid("pcmidi mode: %d\n", pm->midi_mode);
424 if (pm->midi_mode) {
425 pm->midi_octave++;
426 if (pm->midi_octave > 2)
427 pm->midi_octave = 2;
428 dbg_hid("pcmidi mode: %d octave: %d\n",
429 pm->midi_mode, pm->midi_octave);
430 continue;
431 } else
432 key = KEY_MESSENGER;
433 break;
434 case 0x400000:
435 key = KEY_CALENDAR;
436 break;
437 case 0x080000:
438 key = KEY_ADDRESSBOOK;
439 break;
440 case 0x040000:
441 key = KEY_DOCUMENTS;
442 break;
443 case 0x800000:
444 key = KEY_WORDPROCESSOR;
445 break;
446 case 0x200000:
447 key = KEY_SPREADSHEET;
448 break;
449 case 0x010000:
450 key = KEY_COFFEE;
451 break;
452 case 0x000100:
453 key = KEY_HELP;
454 break;
455 case 0x000200:
456 key = KEY_SEND;
457 break;
458 case 0x000400:
459 key = KEY_REPLY;
460 break;
461 case 0x000800:
462 key = KEY_FORWARDMAIL;
463 break;
464 case 0x001000:
465 key = KEY_NEW;
466 break;
467 case 0x002000:
468 key = KEY_OPEN;
469 break;
470 case 0x004000:
471 key = KEY_CLOSE;
472 break;
473 case 0x008000:
474 key = KEY_SAVE;
475 break;
476 case 0x000001:
477 key = KEY_UNDO;
478 break;
479 case 0x000002:
480 key = KEY_REDO;
481 break;
482 case 0x000004:
483 key = KEY_SPELLCHECK;
484 break;
485 case 0x000008:
486 key = KEY_PRINT;
487 break;
488 }
489 if (key) {
490 input_event(pm->input_ep82, EV_KEY, key, 1);
491 pm->last_key[bit_index] = key;
492 }
493 }
494
495 return 1;
496}
497
498static int pcmidi_handle_report(
499 struct pcmidi_snd *pm, unsigned report_id, u8 *data, int size)
500{
501 int ret = 0;
502
503 switch (report_id) {
504 case 0x01:
505 ret = pcmidi_handle_report1(pm, data);
506 break;
507 case 0x03:
508 ret = pcmidi_handle_report3(pm, data, size);
509 break;
510 case 0x04:
511 ret = pcmidi_handle_report4(pm, data);
512 break;
513 }
514 return ret;
515}
516
517static void pcmidi_setup_extra_keys(
518 struct pcmidi_snd *pm, struct input_dev *input)
519{
520
521
522
523
524 unsigned int keys[] = {
525 KEY_FN,
526 KEY_MESSENGER, KEY_CALENDAR,
527 KEY_ADDRESSBOOK, KEY_DOCUMENTS,
528 KEY_WORDPROCESSOR,
529 KEY_SPREADSHEET,
530 KEY_COFFEE,
531 KEY_HELP, KEY_SEND,
532 KEY_REPLY, KEY_FORWARDMAIL,
533 KEY_NEW, KEY_OPEN,
534 KEY_CLOSE, KEY_SAVE,
535 KEY_UNDO, KEY_REDO,
536 KEY_SPELLCHECK, KEY_PRINT,
537 0
538 };
539
540 unsigned int *pkeys = &keys[0];
541 unsigned short i;
542
543 if (pm->ifnum != 1)
544 return;
545
546 pm->input_ep82 = input;
547
548 for (i = 0; i < 24; i++)
549 pm->last_key[i] = 0;
550
551 while (*pkeys != 0) {
552 set_bit(*pkeys, pm->input_ep82->keybit);
553 ++pkeys;
554 }
555}
556
557static int pcmidi_set_operational(struct pcmidi_snd *pm)
558{
559 if (pm->ifnum != 1)
560 return 0;
561
562 pcmidi_get_output_report(pm);
563 pcmidi_submit_output_report(pm, 0xc1);
564 return 0;
565}
566
567static int pcmidi_snd_free(struct snd_device *dev)
568{
569 return 0;
570}
571
572static int pcmidi_in_open(struct snd_rawmidi_substream *substream)
573{
574 struct pcmidi_snd *pm = substream->rmidi->private_data;
575
576 dbg_hid("pcmidi in open\n");
577 pm->in_substream = substream;
578 return 0;
579}
580
581static int pcmidi_in_close(struct snd_rawmidi_substream *substream)
582{
583 dbg_hid("pcmidi in close\n");
584 return 0;
585}
586
587static void pcmidi_in_trigger(struct snd_rawmidi_substream *substream, int up)
588{
589 struct pcmidi_snd *pm = substream->rmidi->private_data;
590
591 dbg_hid("pcmidi in trigger %d\n", up);
592
593 pm->in_triggered = up;
594}
595
596static struct snd_rawmidi_ops pcmidi_in_ops = {
597 .open = pcmidi_in_open,
598 .close = pcmidi_in_close,
599 .trigger = pcmidi_in_trigger
600};
601
602static int pcmidi_snd_initialise(struct pcmidi_snd *pm)
603{
604 static int dev;
605 struct snd_card *card;
606 struct snd_rawmidi *rwmidi;
607 int err;
608
609 static struct snd_device_ops ops = {
610 .dev_free = pcmidi_snd_free,
611 };
612
613 if (pm->ifnum != 1)
614 return 0;
615
616 if (dev >= SNDRV_CARDS)
617 return -ENODEV;
618
619 if (!enable[dev]) {
620 dev++;
621 return -ENOENT;
622 }
623
624
625
626 err = snd_card_new(&pm->pk->hdev->dev, index[dev], id[dev],
627 THIS_MODULE, 0, &card);
628 if (err < 0) {
629 pk_error("failed to create pc-midi sound card\n");
630 err = -ENOMEM;
631 goto fail;
632 }
633 pm->card = card;
634
635
636 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pm, &ops);
637 if (err < 0) {
638 pk_error("failed to create pc-midi sound device: error %d\n",
639 err);
640 goto fail;
641 }
642
643 strncpy(card->driver, shortname, sizeof(card->driver));
644 strncpy(card->shortname, shortname, sizeof(card->shortname));
645 strncpy(card->longname, longname, sizeof(card->longname));
646
647
648 err = snd_rawmidi_new(card, card->shortname, 0,
649 0, 1, &rwmidi);
650 if (err < 0) {
651 pk_error("failed to create pc-midi rawmidi device: error %d\n",
652 err);
653 goto fail;
654 }
655 pm->rwmidi = rwmidi;
656 strncpy(rwmidi->name, card->shortname, sizeof(rwmidi->name));
657 rwmidi->info_flags = SNDRV_RAWMIDI_INFO_INPUT;
658 rwmidi->private_data = pm;
659
660 snd_rawmidi_set_ops(rwmidi, SNDRV_RAWMIDI_STREAM_INPUT,
661 &pcmidi_in_ops);
662
663
664 err = device_create_file(&pm->pk->hdev->dev,
665 sysfs_device_attr_channel);
666 if (err < 0) {
667 pk_error("failed to create sysfs attribute channel: error %d\n",
668 err);
669 goto fail;
670 }
671
672 err = device_create_file(&pm->pk->hdev->dev,
673 sysfs_device_attr_sustain);
674 if (err < 0) {
675 pk_error("failed to create sysfs attribute sustain: error %d\n",
676 err);
677 goto fail_attr_sustain;
678 }
679
680 err = device_create_file(&pm->pk->hdev->dev,
681 sysfs_device_attr_octave);
682 if (err < 0) {
683 pk_error("failed to create sysfs attribute octave: error %d\n",
684 err);
685 goto fail_attr_octave;
686 }
687
688 spin_lock_init(&pm->rawmidi_in_lock);
689
690 init_sustain_timers(pm);
691 pcmidi_set_operational(pm);
692
693
694 err = snd_card_register(card);
695 if (err < 0) {
696 pk_error("failed to register pc-midi sound card: error %d\n",
697 err);
698 goto fail_register;
699 }
700
701 dbg_hid("pcmidi_snd_initialise finished ok\n");
702 return 0;
703
704fail_register:
705 stop_sustain_timers(pm);
706 device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_octave);
707fail_attr_octave:
708 device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_sustain);
709fail_attr_sustain:
710 device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_channel);
711fail:
712 if (pm->card) {
713 snd_card_free(pm->card);
714 pm->card = NULL;
715 }
716 return err;
717}
718
719static int pcmidi_snd_terminate(struct pcmidi_snd *pm)
720{
721 if (pm->card) {
722 stop_sustain_timers(pm);
723
724 device_remove_file(&pm->pk->hdev->dev,
725 sysfs_device_attr_channel);
726 device_remove_file(&pm->pk->hdev->dev,
727 sysfs_device_attr_sustain);
728 device_remove_file(&pm->pk->hdev->dev,
729 sysfs_device_attr_octave);
730
731 snd_card_disconnect(pm->card);
732 snd_card_free_when_closed(pm->card);
733 }
734
735 return 0;
736}
737
738
739
740
741static __u8 *pk_report_fixup(struct hid_device *hdev, __u8 *rdesc,
742 unsigned int *rsize)
743{
744 if (*rsize == 178 &&
745 rdesc[111] == 0x06 && rdesc[112] == 0x00 &&
746 rdesc[113] == 0xff) {
747 hid_info(hdev,
748 "fixing up pc-midi keyboard report descriptor\n");
749
750 rdesc[144] = 0x18;
751 }
752 return rdesc;
753}
754
755static int pk_input_mapping(struct hid_device *hdev, struct hid_input *hi,
756 struct hid_field *field, struct hid_usage *usage,
757 unsigned long **bit, int *max)
758{
759 struct pk_device *pk = hid_get_drvdata(hdev);
760 struct pcmidi_snd *pm;
761
762 pm = pk->pm;
763
764 if (HID_UP_MSVENDOR == (usage->hid & HID_USAGE_PAGE) &&
765 1 == pm->ifnum) {
766 pcmidi_setup_extra_keys(pm, hi->input);
767 return 0;
768 }
769
770 return 0;
771}
772
773
774static int pk_raw_event(struct hid_device *hdev, struct hid_report *report,
775 u8 *data, int size)
776{
777 struct pk_device *pk = hid_get_drvdata(hdev);
778 int ret = 0;
779
780 if (1 == pk->pm->ifnum) {
781 if (report->id == data[0])
782 switch (report->id) {
783 case 0x01:
784 case 0x03:
785 case 0x04:
786 ret = pcmidi_handle_report(pk->pm,
787 report->id, data, size);
788 break;
789 }
790 }
791
792 return ret;
793}
794
795static int pk_probe(struct hid_device *hdev, const struct hid_device_id *id)
796{
797 int ret;
798 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
799 unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
800 unsigned long quirks = id->driver_data;
801 struct pk_device *pk;
802 struct pcmidi_snd *pm = NULL;
803
804 pk = kzalloc(sizeof(*pk), GFP_KERNEL);
805 if (pk == NULL) {
806 hid_err(hdev, "can't alloc descriptor\n");
807 return -ENOMEM;
808 }
809
810 pk->hdev = hdev;
811
812 pm = kzalloc(sizeof(*pm), GFP_KERNEL);
813 if (pm == NULL) {
814 hid_err(hdev, "can't alloc descriptor\n");
815 ret = -ENOMEM;
816 goto err_free_pk;
817 }
818
819 pm->pk = pk;
820 pk->pm = pm;
821 pm->ifnum = ifnum;
822
823 hid_set_drvdata(hdev, pk);
824
825 ret = hid_parse(hdev);
826 if (ret) {
827 hid_err(hdev, "hid parse failed\n");
828 goto err_free;
829 }
830
831 if (quirks & PK_QUIRK_NOGET) {
832 hdev->quirks |= HID_QUIRK_NOGET;
833 }
834
835 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
836 if (ret) {
837 hid_err(hdev, "hw start failed\n");
838 goto err_free;
839 }
840
841 ret = pcmidi_snd_initialise(pm);
842 if (ret < 0)
843 goto err_stop;
844
845 return 0;
846err_stop:
847 hid_hw_stop(hdev);
848err_free:
849 kfree(pm);
850err_free_pk:
851 kfree(pk);
852
853 return ret;
854}
855
856static void pk_remove(struct hid_device *hdev)
857{
858 struct pk_device *pk = hid_get_drvdata(hdev);
859 struct pcmidi_snd *pm;
860
861 pm = pk->pm;
862 if (pm) {
863 pcmidi_snd_terminate(pm);
864 kfree(pm);
865 }
866
867 hid_hw_stop(hdev);
868
869 kfree(pk);
870}
871
872static const struct hid_device_id pk_devices[] = {
873 {HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS,
874 USB_DEVICE_ID_PRODIKEYS_PCMIDI),
875 .driver_data = PK_QUIRK_NOGET},
876 { }
877};
878MODULE_DEVICE_TABLE(hid, pk_devices);
879
880static struct hid_driver pk_driver = {
881 .name = "prodikeys",
882 .id_table = pk_devices,
883 .report_fixup = pk_report_fixup,
884 .input_mapping = pk_input_mapping,
885 .raw_event = pk_raw_event,
886 .probe = pk_probe,
887 .remove = pk_remove,
888};
889module_hid_driver(pk_driver);
890
891MODULE_LICENSE("GPL");
892
