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[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / hid / hid-prodikeys.c
CommitLineData
3a370ca1
DP		 1/*
2 * HID driver for the Prodikeys PC-MIDI Keyboard
3 * providing midi & extra multimedia keys functionality
4 *
5 * Copyright (c) 2009 Don Prince <dhprince.devel@yahoo.co.uk>
6 *
7 * Controls for Octave Shift Up/Down, Channel, and
8 * Sustain Duration available via sysfs.
9 *
10 */
11
12/*
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the Free
15 * Software Foundation; either version 2 of the License, or (at your option)
16 * any later version.
17 */
18
4291ee30
JP		 19#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
3a370ca1
DP		 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>
3a370ca1
DP		 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; /* pcmidi device context */
44};
45
3a370ca1
DP		 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;
90ab5ee9 92static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
3a370ca1
DP		 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/* Output routine for the sysfs channel file */
103static ssize_t show_channel(struct device *dev,
104 struct device_attribute *attr, char *buf)
105{
106 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
372d297b 107 struct pk_device *pk = hid_get_drvdata(hdev);
3a370ca1
DP		 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/* Input routine for the sysfs channel file */
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 = container_of(dev, struct hid_device, dev);
372d297b 120 struct pk_device *pk = hid_get_drvdata(hdev);
3a370ca1
DP		 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
c311598b 132static DEVICE_ATTR(channel, S_IRUGO | S_IWUSR | S_IWGRP , show_channel,
3a370ca1
DP		 133 store_channel);
134
135static struct device_attribute *sysfs_device_attr_channel = {
136 &dev_attr_channel,
137 };
138
139/* Output routine for the sysfs sustain file */
140static ssize_t show_sustain(struct device *dev,
141 struct device_attribute *attr, char *buf)
142{
143 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
372d297b 144 struct pk_device *pk = hid_get_drvdata(hdev);
3a370ca1
DP		 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/* Input routine for the sysfs sustain file */
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 = container_of(dev, struct hid_device, dev);
372d297b 157 struct pk_device *pk = hid_get_drvdata(hdev);
3a370ca1
DP		 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
c311598b 171static DEVICE_ATTR(sustain, S_IRUGO | S_IWUSR | S_IWGRP, show_sustain,
3a370ca1
DP		 172 store_sustain);
173
174static struct device_attribute *sysfs_device_attr_sustain = {
175 &dev_attr_sustain,
176 };
177
178/* Output routine for the sysfs octave file */
179static ssize_t show_octave(struct device *dev,
180 struct device_attribute *attr, char *buf)
181{
182 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
372d297b 183 struct pk_device *pk = hid_get_drvdata(hdev);
3a370ca1
DP		 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/* Input routine for the sysfs octave file */
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 = container_of(dev, struct hid_device, dev);
372d297b 196 struct pk_device *pk = hid_get_drvdata(hdev);
3a370ca1
DP		 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
c311598b 209static DEVICE_ATTR(octave, S_IRUGO | S_IWUSR | S_IWGRP, show_octave,
3a370ca1
DP		 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
f4c79818 242static void pcmidi_sustained_note_release(unsigned long data)
3a370ca1
DP		 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
f4c79818 250static void init_sustain_timers(struct pcmidi_snd *pm)
3a370ca1
DP		 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
f4c79818 264static void stop_sustain_timers(struct pcmidi_snd *pm)
3a370ca1
DP		 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) {
4291ee30 287 hid_err(hdev, "output report is empty\n");
3a370ca1
DP		 288 break;
289 }
290 if (report->field[0]->report_count != 2) {
4291ee30 291 hid_err(hdev, "field count too low\n");
3a370ca1
DP		 292 break;
293 }
294 pm->pcmidi_report6 = report;
295 return 0;
296 }
297 /* should never get here */
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
d8814272 308 hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
3a370ca1
DP		 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 /*KEY_MAIL or octave down*/
322 if (pm->midi_mode && bit_mask == 0x004000) {
323 /* octave down */
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 /*KEY_WWW or sustain*/
332 else if (pm->midi_mode && bit_mask == 0x000004) {
333 /* sustain on/off*/
334 pm->midi_sustain_mode ^= 0x1;
335 return 1;
336 }
337
338 return 0; /* continue key processing */
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) { /* note on */
353 status = 128 + 16 + pm->midi_channel; /* 1001nnnn */
354 note = note - 0x54 + PCMIDI_MIDDLE_C +
355 (pm->midi_octave * 12);
356 if (0 == velocity)
357 velocity = 1; /* force note on */
358 } else { /* note off */
359 status = 128 + pm->midi_channel; /* 1000nnnn */
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 /* break keys */
397 for (bit_index = 0; bit_index < 24; bit_index++) {
398 key = pm->last_key[bit_index];
399 if (!((0x01 << bit_index) & bit_mask)) {
400 input_event(pm->input_ep82, EV_KEY,
401 pm->last_key[bit_index], 0);
402 pm->last_key[bit_index] = 0;
403 }
404 }
405
406 /* make keys */
407 for (bit_index = 0; bit_index < 24; bit_index++) {
408 key = 0;
409 switch ((0x01 << bit_index) & bit_mask) {
410 case 0x000010: /* Fn lock*/
411 pm->fn_state ^= 0x000010;
412 if (pm->fn_state)
413 pcmidi_submit_output_report(pm, 0xc5);
414 else
415 pcmidi_submit_output_report(pm, 0xc6);
416 continue;
417 case 0x020000: /* midi launcher..send a key (qwerty) or not? */
418 pcmidi_submit_output_report(pm, 0xc1);
419 pm->midi_mode ^= 0x01;
420
421 dbg_hid("pcmidi mode: %d\n", pm->midi_mode);
422 continue;
423 case 0x100000: /* KEY_MESSENGER or octave up */
424 dbg_hid("pcmidi mode: %d\n", pm->midi_mode);
425 if (pm->midi_mode) {
426 pm->midi_octave++;
427 if (pm->midi_octave > 2)
428 pm->midi_octave = 2;
429 dbg_hid("pcmidi mode: %d octave: %d\n",
430 pm->midi_mode, pm->midi_octave);
431 continue;
432 } else
433 key = KEY_MESSENGER;
434 break;
435 case 0x400000:
436 key = KEY_CALENDAR;
437 break;
438 case 0x080000:
439 key = KEY_ADDRESSBOOK;
440 break;
441 case 0x040000:
442 key = KEY_DOCUMENTS;
443 break;
444 case 0x800000:
445 key = KEY_WORDPROCESSOR;
446 break;
447 case 0x200000:
448 key = KEY_SPREADSHEET;
449 break;
450 case 0x010000:
451 key = KEY_COFFEE;
452 break;
453 case 0x000100:
454 key = KEY_HELP;
455 break;
456 case 0x000200:
457 key = KEY_SEND;
458 break;
459 case 0x000400:
460 key = KEY_REPLY;
461 break;
462 case 0x000800:
463 key = KEY_FORWARDMAIL;
464 break;
465 case 0x001000:
466 key = KEY_NEW;
467 break;
468 case 0x002000:
469 key = KEY_OPEN;
470 break;
471 case 0x004000:
472 key = KEY_CLOSE;
473 break;
474 case 0x008000:
475 key = KEY_SAVE;
476 break;
477 case 0x000001:
478 key = KEY_UNDO;
479 break;
480 case 0x000002:
481 key = KEY_REDO;
482 break;
483 case 0x000004:
484 key = KEY_SPELLCHECK;
485 break;
486 case 0x000008:
487 key = KEY_PRINT;
488 break;
489 }
490 if (key) {
491 input_event(pm->input_ep82, EV_KEY, key, 1);
492 pm->last_key[bit_index] = key;
493 }
494 }
495
496 return 1;
497}
498
f4c79818 499static int pcmidi_handle_report(
3a370ca1
DP		 500 struct pcmidi_snd *pm, unsigned report_id, u8 *data, int size)
501{
502 int ret = 0;
503
504 switch (report_id) {
505 case 0x01: /* midi keys (qwerty)*/
506 ret = pcmidi_handle_report1(pm, data);
507 break;
508 case 0x03: /* midi keyboard (musical)*/
509 ret = pcmidi_handle_report3(pm, data, size);
510 break;
511 case 0x04: /* multimedia/midi keys (qwerty)*/
512 ret = pcmidi_handle_report4(pm, data);
513 break;
514 }
515 return ret;
516}
517
f4c79818
AL		 518static void pcmidi_setup_extra_keys(
519 struct pcmidi_snd *pm, struct input_dev *input)
3a370ca1
DP		 520{
521 /* reassigned functionality for N/A keys
522 MY PICTURES => KEY_WORDPROCESSOR
523 MY MUSIC=> KEY_SPREADSHEET
524 */
525 unsigned int keys[] = {
526 KEY_FN,
527 KEY_MESSENGER, KEY_CALENDAR,
528 KEY_ADDRESSBOOK, KEY_DOCUMENTS,
529 KEY_WORDPROCESSOR,
530 KEY_SPREADSHEET,
531 KEY_COFFEE,
532 KEY_HELP, KEY_SEND,
533 KEY_REPLY, KEY_FORWARDMAIL,
534 KEY_NEW, KEY_OPEN,
535 KEY_CLOSE, KEY_SAVE,
536 KEY_UNDO, KEY_REDO,
537 KEY_SPELLCHECK, KEY_PRINT,
538 0
539 };
540
541 unsigned int *pkeys = &keys[0];
542 unsigned short i;
543
544 if (pm->ifnum != 1) /* only set up ONCE for interace 1 */
545 return;
546
547 pm->input_ep82 = input;
548
549 for (i = 0; i < 24; i++)
550 pm->last_key[i] = 0;
551
552 while (*pkeys != 0) {
553 set_bit(*pkeys, pm->input_ep82->keybit);
554 ++pkeys;
555 }
556}
557
558static int pcmidi_set_operational(struct pcmidi_snd *pm)
559{
560 if (pm->ifnum != 1)
561 return 0; /* only set up ONCE for interace 1 */
562
563 pcmidi_get_output_report(pm);
564 pcmidi_submit_output_report(pm, 0xc1);
565 return 0;
566}
567
568static int pcmidi_snd_free(struct snd_device *dev)
569{
570 return 0;
571}
572
573static int pcmidi_in_open(struct snd_rawmidi_substream *substream)
574{
575 struct pcmidi_snd *pm = substream->rmidi->private_data;
576
577 dbg_hid("pcmidi in open\n");
578 pm->in_substream = substream;
579 return 0;
580}
581
582static int pcmidi_in_close(struct snd_rawmidi_substream *substream)
583{
584 dbg_hid("pcmidi in close\n");
585 return 0;
586}
587
588static void pcmidi_in_trigger(struct snd_rawmidi_substream *substream, int up)
589{
590 struct pcmidi_snd *pm = substream->rmidi->private_data;
591
592 dbg_hid("pcmidi in trigger %d\n", up);
593
594 pm->in_triggered = up;
595}
596
597static struct snd_rawmidi_ops pcmidi_in_ops = {
598 .open = pcmidi_in_open,
599 .close = pcmidi_in_close,
600 .trigger = pcmidi_in_trigger
601};
602
f4c79818 603static int pcmidi_snd_initialise(struct pcmidi_snd *pm)
3a370ca1
DP		 604{
605 static int dev;
606 struct snd_card *card;
607 struct snd_rawmidi *rwmidi;
608 int err;
609
610 static struct snd_device_ops ops = {
611 .dev_free = pcmidi_snd_free,
612 };
613
614 if (pm->ifnum != 1)
615 return 0; /* only set up midi device ONCE for interace 1 */
616
617 if (dev >= SNDRV_CARDS)
618 return -ENODEV;
619
620 if (!enable[dev]) {
621 dev++;
622 return -ENOENT;
623 }
624
625 /* Setup sound card */
626
627 err = snd_card_create(index[dev], id[dev], 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 /* Setup sound device */
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 /* Set up rawmidi */
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 snd_card_set_dev(card, &pm->pk->hdev->dev);
664
665 /* create sysfs variables */
666 err = device_create_file(&pm->pk->hdev->dev,
667 sysfs_device_attr_channel);
668 if (err < 0) {
669 pk_error("failed to create sysfs attribute channel: error %d\n",
670 err);
671 goto fail;
672 }
673
674 err = device_create_file(&pm->pk->hdev->dev,
675 sysfs_device_attr_sustain);
676 if (err < 0) {
677 pk_error("failed to create sysfs attribute sustain: error %d\n",
678 err);
679 goto fail_attr_sustain;
680 }
681
682 err = device_create_file(&pm->pk->hdev->dev,
683 sysfs_device_attr_octave);
684 if (err < 0) {
685 pk_error("failed to create sysfs attribute octave: error %d\n",
686 err);
687 goto fail_attr_octave;
688 }
689
690 spin_lock_init(&pm->rawmidi_in_lock);
691
692 init_sustain_timers(pm);
693 pcmidi_set_operational(pm);
694
695 /* register it */
696 err = snd_card_register(card);
697 if (err < 0) {
698 pk_error("failed to register pc-midi sound card: error %d\n",
699 err);
700 goto fail_register;
701 }
702
703 dbg_hid("pcmidi_snd_initialise finished ok\n");
704 return 0;
705
706fail_register:
707 stop_sustain_timers(pm);
708 device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_octave);
709fail_attr_octave:
710 device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_sustain);
711fail_attr_sustain:
712 device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_channel);
713fail:
714 if (pm->card) {
715 snd_card_free(pm->card);
716 pm->card = NULL;
717 }
718 return err;
719}
720
f4c79818 721static int pcmidi_snd_terminate(struct pcmidi_snd *pm)
3a370ca1
DP		 722{
723 if (pm->card) {
724 stop_sustain_timers(pm);
725
726 device_remove_file(&pm->pk->hdev->dev,
727 sysfs_device_attr_channel);
728 device_remove_file(&pm->pk->hdev->dev,
729 sysfs_device_attr_sustain);
730 device_remove_file(&pm->pk->hdev->dev,
731 sysfs_device_attr_octave);
732
733 snd_card_disconnect(pm->card);
734 snd_card_free_when_closed(pm->card);
735 }
736
737 return 0;
738}
739
740/*
741 * PC-MIDI report descriptor for report id is wrong.
742 */
73e4008d
NK		 743static __u8 *pk_report_fixup(struct hid_device *hdev, __u8 *rdesc,
744 unsigned int *rsize)
3a370ca1 745{
73e4008d 746 if (*rsize == 178 &&
3a370ca1
DP		 747 rdesc[111] == 0x06 && rdesc[112] == 0x00 &&
748 rdesc[113] == 0xff) {
4291ee30
JP		 749 hid_info(hdev,
750 "fixing up pc-midi keyboard report descriptor\n");
3a370ca1
DP		 751
752 rdesc[144] = 0x18; /* report 4: was 0x10 report count */
753 }
73e4008d 754 return rdesc;
3a370ca1
DP		 755}
756
757static int pk_input_mapping(struct hid_device *hdev, struct hid_input *hi,
758 struct hid_field *field, struct hid_usage *usage,
759 unsigned long **bit, int *max)
760{
372d297b 761 struct pk_device *pk = hid_get_drvdata(hdev);
3a370ca1
DP		 762 struct pcmidi_snd *pm;
763
764 pm = pk->pm;
765
766 if (HID_UP_MSVENDOR == (usage->hid & HID_USAGE_PAGE) &&
767 1 == pm->ifnum) {
768 pcmidi_setup_extra_keys(pm, hi->input);
769 return 0;
770 }
771
772 return 0;
773}
774
775
776static int pk_raw_event(struct hid_device *hdev, struct hid_report *report,
777 u8 *data, int size)
778{
372d297b 779 struct pk_device *pk = hid_get_drvdata(hdev);
3a370ca1
DP		 780 int ret = 0;
781
782 if (1 == pk->pm->ifnum) {
783 if (report->id == data[0])
784 switch (report->id) {
785 case 0x01: /* midi keys (qwerty)*/
786 case 0x03: /* midi keyboard (musical)*/
787 case 0x04: /* extra/midi keys (qwerty)*/
788 ret = pcmidi_handle_report(pk->pm,
789 report->id, data, size);
790 break;
791 }
792 }
793
794 return ret;
795}
796
797static int pk_probe(struct hid_device *hdev, const struct hid_device_id *id)
798{
799 int ret;
800 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
801 unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
802 unsigned long quirks = id->driver_data;
803 struct pk_device *pk;
804 struct pcmidi_snd *pm = NULL;
805
806 pk = kzalloc(sizeof(*pk), GFP_KERNEL);
807 if (pk == NULL) {
4291ee30 808 hid_err(hdev, "can't alloc descriptor\n");
3a370ca1
DP		 809 return -ENOMEM;
810 }
811
812 pk->hdev = hdev;
813
814 pm = kzalloc(sizeof(*pm), GFP_KERNEL);
815 if (pm == NULL) {
4291ee30 816 hid_err(hdev, "can't alloc descriptor\n");
3a370ca1 817 ret = -ENOMEM;
00b15628 818 goto err_free_pk;
3a370ca1
DP		 819 }
820
821 pm->pk = pk;
822 pk->pm = pm;
823 pm->ifnum = ifnum;
824
825 hid_set_drvdata(hdev, pk);
826
827 ret = hid_parse(hdev);
828 if (ret) {
4291ee30 829 hid_err(hdev, "hid parse failed\n");
3a370ca1
DP		 830 goto err_free;
831 }
832
833 if (quirks & PK_QUIRK_NOGET) { /* hid_parse cleared all the quirks */
834 hdev->quirks |= HID_QUIRK_NOGET;
835 }
836
837 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
838 if (ret) {
4291ee30 839 hid_err(hdev, "hw start failed\n");
3a370ca1
DP		 840 goto err_free;
841 }
842
843 ret = pcmidi_snd_initialise(pm);
844 if (ret < 0)
845 goto err_stop;
846
847 return 0;
848err_stop:
849 hid_hw_stop(hdev);
850err_free:
00b15628
BP		 851 kfree(pm);
852err_free_pk:
3a370ca1 853 kfree(pk);
00b15628 854
3a370ca1
DP		 855 return ret;
856}
857
858static void pk_remove(struct hid_device *hdev)
859{
372d297b 860 struct pk_device *pk = hid_get_drvdata(hdev);
3a370ca1
DP		 861 struct pcmidi_snd *pm;
862
863 pm = pk->pm;
864 if (pm) {
865 pcmidi_snd_terminate(pm);
866 kfree(pm);
867 }
868
869 hid_hw_stop(hdev);
870
871 kfree(pk);
872}
873
874static const struct hid_device_id pk_devices[] = {
875 {HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS,
876 USB_DEVICE_ID_PRODIKEYS_PCMIDI),
877 .driver_data = PK_QUIRK_NOGET},
878 { }
879};
880MODULE_DEVICE_TABLE(hid, pk_devices);
881
882static struct hid_driver pk_driver = {
883 .name = "prodikeys",
884 .id_table = pk_devices,
885 .report_fixup = pk_report_fixup,
886 .input_mapping = pk_input_mapping,
887 .raw_event = pk_raw_event,
888 .probe = pk_probe,
889 .remove = pk_remove,
890};
f425458e 891module_hid_driver(pk_driver);
3a370ca1 892
3a370ca1 893MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)