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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 | |
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 "usbhid/usbhid.h" |
30 | #include "hid-ids.h" |
31 | |
32 | |
33 | #define pk_debug(format, arg...) \ |
34 | pr_debug("hid-prodikeys: " format "\n" , ## arg) |
35 | #define pk_error(format, arg...) \ |
36 | pr_err("hid-prodikeys: " format "\n" , ## arg) |
37 | |
38 | struct pcmidi_snd; |
39 | |
40 | struct pk_device { |
41 | unsigned long quirks; |
42 | |
43 | struct hid_device *hdev; |
44 | struct pcmidi_snd *pm; /* pcmidi device context */ |
45 | }; |
46 | |
47 | struct pcmidi_sustain { |
48 | unsigned long in_use; |
49 | struct pcmidi_snd *pm; |
50 | struct timer_list timer; |
51 | unsigned char status; |
52 | unsigned char note; |
53 | unsigned char velocity; |
54 | }; |
55 | |
56 | #define PCMIDI_SUSTAINED_MAX 32 |
57 | struct pcmidi_snd { |
58 | struct pk_device *pk; |
59 | unsigned short ifnum; |
60 | struct hid_report *pcmidi_report6; |
61 | struct input_dev *input_ep82; |
62 | unsigned short midi_mode; |
63 | unsigned short midi_sustain_mode; |
64 | unsigned short midi_sustain; |
65 | unsigned short midi_channel; |
66 | short midi_octave; |
67 | struct pcmidi_sustain sustained_notes[PCMIDI_SUSTAINED_MAX]; |
68 | unsigned short fn_state; |
69 | unsigned short last_key[24]; |
70 | spinlock_t rawmidi_in_lock; |
71 | struct snd_card *card; |
72 | struct snd_rawmidi *rwmidi; |
73 | struct snd_rawmidi_substream *in_substream; |
74 | struct snd_rawmidi_substream *out_substream; |
75 | unsigned long in_triggered; |
76 | unsigned long out_active; |
77 | }; |
78 | |
79 | #define PK_QUIRK_NOGET 0x00010000 |
80 | #define PCMIDI_MIDDLE_C 60 |
81 | #define PCMIDI_CHANNEL_MIN 0 |
82 | #define PCMIDI_CHANNEL_MAX 15 |
83 | #define PCMIDI_OCTAVE_MIN (-2) |
84 | #define PCMIDI_OCTAVE_MAX 2 |
85 | #define PCMIDI_SUSTAIN_MIN 0 |
86 | #define PCMIDI_SUSTAIN_MAX 5000 |
87 | |
88 | static const char shortname[] = "PC-MIDI"; |
89 | static const char longname[] = "Prodikeys PC-MIDI Keyboard"; |
90 | |
91 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; |
92 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; |
93 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
94 | |
95 | module_param_array(index, int, NULL, 0444); |
96 | module_param_array(id, charp, NULL, 0444); |
97 | module_param_array(enable, bool, NULL, 0444); |
98 | MODULE_PARM_DESC(index, "Index value for the PC-MIDI virtual audio driver"); |
99 | MODULE_PARM_DESC(id, "ID string for the PC-MIDI virtual audio driver"); |
100 | MODULE_PARM_DESC(enable, "Enable for the PC-MIDI virtual audio driver"); |
101 | |
102 | |
103 | /* Output routine for the sysfs channel file */ |
104 | static ssize_t show_channel(struct device *dev, |
105 | struct device_attribute *attr, char *buf) |
106 | { |
107 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); |
108 | struct pk_device *pk = hid_get_drvdata(hdev); |
109 | |
110 | dbg_hid("pcmidi sysfs read channel=%u\n", pk->pm->midi_channel); |
111 | |
112 | return sprintf(buf, "%u (min:%u, max:%u)\n", pk->pm->midi_channel, |
113 | PCMIDI_CHANNEL_MIN, PCMIDI_CHANNEL_MAX); |
114 | } |
115 | |
116 | /* Input routine for the sysfs channel file */ |
117 | static ssize_t store_channel(struct device *dev, |
118 | struct device_attribute *attr, const char *buf, size_t count) |
119 | { |
120 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); |
121 | struct pk_device *pk = hid_get_drvdata(hdev); |
122 | |
123 | unsigned channel = 0; |
124 | |
125 | if (sscanf(buf, "%u", &channel) > 0 && channel <= PCMIDI_CHANNEL_MAX) { |
126 | dbg_hid("pcmidi sysfs write channel=%u\n", channel); |
127 | pk->pm->midi_channel = channel; |
128 | return strlen(buf); |
129 | } |
130 | return -EINVAL; |
131 | } |
132 | |
133 | static DEVICE_ATTR(channel, S_IRUGO | S_IWUSR | S_IWGRP , show_channel, |
134 | store_channel); |
135 | |
136 | static struct device_attribute *sysfs_device_attr_channel = { |
137 | &dev_attr_channel, |
138 | }; |
139 | |
140 | /* Output routine for the sysfs sustain file */ |
141 | static ssize_t show_sustain(struct device *dev, |
142 | struct device_attribute *attr, char *buf) |
143 | { |
144 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); |
145 | struct pk_device *pk = hid_get_drvdata(hdev); |
146 | |
147 | dbg_hid("pcmidi sysfs read sustain=%u\n", pk->pm->midi_sustain); |
148 | |
149 | return sprintf(buf, "%u (off:%u, max:%u (ms))\n", pk->pm->midi_sustain, |
150 | PCMIDI_SUSTAIN_MIN, PCMIDI_SUSTAIN_MAX); |
151 | } |
152 | |
153 | /* Input routine for the sysfs sustain file */ |
154 | static ssize_t store_sustain(struct device *dev, |
155 | struct device_attribute *attr, const char *buf, size_t count) |
156 | { |
157 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); |
158 | struct pk_device *pk = hid_get_drvdata(hdev); |
159 | |
160 | unsigned sustain = 0; |
161 | |
162 | if (sscanf(buf, "%u", &sustain) > 0 && sustain <= PCMIDI_SUSTAIN_MAX) { |
163 | dbg_hid("pcmidi sysfs write sustain=%u\n", sustain); |
164 | pk->pm->midi_sustain = sustain; |
165 | pk->pm->midi_sustain_mode = |
166 | (0 == sustain || !pk->pm->midi_mode) ? 0 : 1; |
167 | return strlen(buf); |
168 | } |
169 | return -EINVAL; |
170 | } |
171 | |
172 | static DEVICE_ATTR(sustain, S_IRUGO | S_IWUSR | S_IWGRP, show_sustain, |
173 | store_sustain); |
174 | |
175 | static struct device_attribute *sysfs_device_attr_sustain = { |
176 | &dev_attr_sustain, |
177 | }; |
178 | |
179 | /* Output routine for the sysfs octave file */ |
180 | static ssize_t show_octave(struct device *dev, |
181 | struct device_attribute *attr, char *buf) |
182 | { |
183 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); |
184 | struct pk_device *pk = hid_get_drvdata(hdev); |
185 | |
186 | dbg_hid("pcmidi sysfs read octave=%d\n", pk->pm->midi_octave); |
187 | |
188 | return sprintf(buf, "%d (min:%d, max:%d)\n", pk->pm->midi_octave, |
189 | PCMIDI_OCTAVE_MIN, PCMIDI_OCTAVE_MAX); |
190 | } |
191 | |
192 | /* Input routine for the sysfs octave file */ |
193 | static ssize_t store_octave(struct device *dev, |
194 | struct device_attribute *attr, const char *buf, size_t count) |
195 | { |
196 | struct hid_device *hdev = container_of(dev, struct hid_device, dev); |
197 | struct pk_device *pk = hid_get_drvdata(hdev); |
198 | |
199 | int octave = 0; |
200 | |
201 | if (sscanf(buf, "%d", &octave) > 0 && |
202 | octave >= PCMIDI_OCTAVE_MIN && octave <= PCMIDI_OCTAVE_MAX) { |
203 | dbg_hid("pcmidi sysfs write octave=%d\n", octave); |
204 | pk->pm->midi_octave = octave; |
205 | return strlen(buf); |
206 | } |
207 | return -EINVAL; |
208 | } |
209 | |
210 | static DEVICE_ATTR(octave, S_IRUGO | S_IWUSR | S_IWGRP, show_octave, |
211 | store_octave); |
212 | |
213 | static struct device_attribute *sysfs_device_attr_octave = { |
214 | &dev_attr_octave, |
215 | }; |
216 | |
217 | |
218 | static void pcmidi_send_note(struct pcmidi_snd *pm, |
219 | unsigned char status, unsigned char note, unsigned char velocity) |
220 | { |
221 | unsigned long flags; |
222 | unsigned char buffer[3]; |
223 | |
224 | buffer[0] = status; |
225 | buffer[1] = note; |
226 | buffer[2] = velocity; |
227 | |
228 | spin_lock_irqsave(&pm->rawmidi_in_lock, flags); |
229 | |
230 | if (!pm->in_substream) |
231 | goto drop_note; |
232 | if (!test_bit(pm->in_substream->number, &pm->in_triggered)) |
233 | goto drop_note; |
234 | |
235 | snd_rawmidi_receive(pm->in_substream, buffer, 3); |
236 | |
237 | drop_note: |
238 | spin_unlock_irqrestore(&pm->rawmidi_in_lock, flags); |
239 | |
240 | return; |
241 | } |
242 | |
243 | static void pcmidi_sustained_note_release(unsigned long data) |
244 | { |
245 | struct pcmidi_sustain *pms = (struct pcmidi_sustain *)data; |
246 | |
247 | pcmidi_send_note(pms->pm, pms->status, pms->note, pms->velocity); |
248 | pms->in_use = 0; |
249 | } |
250 | |
251 | static void init_sustain_timers(struct pcmidi_snd *pm) |
252 | { |
253 | struct pcmidi_sustain *pms; |
254 | unsigned i; |
255 | |
256 | for (i = 0; i < PCMIDI_SUSTAINED_MAX; i++) { |
257 | pms = &pm->sustained_notes[i]; |
258 | pms->in_use = 0; |
259 | pms->pm = pm; |
260 | setup_timer(&pms->timer, pcmidi_sustained_note_release, |
261 | (unsigned long)pms); |
262 | } |
263 | } |
264 | |
265 | static void stop_sustain_timers(struct pcmidi_snd *pm) |
266 | { |
267 | struct pcmidi_sustain *pms; |
268 | unsigned i; |
269 | |
270 | for (i = 0; i < PCMIDI_SUSTAINED_MAX; i++) { |
271 | pms = &pm->sustained_notes[i]; |
272 | pms->in_use = 1; |
273 | del_timer_sync(&pms->timer); |
274 | } |
275 | } |
276 | |
277 | static int pcmidi_get_output_report(struct pcmidi_snd *pm) |
278 | { |
279 | struct hid_device *hdev = pm->pk->hdev; |
280 | struct hid_report *report; |
281 | |
282 | list_for_each_entry(report, |
283 | &hdev->report_enum[HID_OUTPUT_REPORT].report_list, list) { |
284 | if (!(6 == report->id)) |
285 | continue; |
286 | |
287 | if (report->maxfield < 1) { |
288 | hid_err(hdev, "output report is empty\n"); |
289 | break; |
290 | } |
291 | if (report->field[0]->report_count != 2) { |
292 | hid_err(hdev, "field count too low\n"); |
293 | break; |
294 | } |
295 | pm->pcmidi_report6 = report; |
296 | return 0; |
297 | } |
298 | /* should never get here */ |
299 | return -ENODEV; |
300 | } |
301 | |
302 | static void pcmidi_submit_output_report(struct pcmidi_snd *pm, int state) |
303 | { |
304 | struct hid_device *hdev = pm->pk->hdev; |
305 | struct hid_report *report = pm->pcmidi_report6; |
306 | report->field[0]->value[0] = 0x01; |
307 | report->field[0]->value[1] = state; |
308 | |
309 | usbhid_submit_report(hdev, report, USB_DIR_OUT); |
310 | } |
311 | |
312 | static int pcmidi_handle_report1(struct pcmidi_snd *pm, u8 *data) |
313 | { |
314 | u32 bit_mask; |
315 | |
316 | bit_mask = data[1]; |
317 | bit_mask = (bit_mask << 8) | data[2]; |
318 | bit_mask = (bit_mask << 8) | data[3]; |
319 | |
320 | dbg_hid("pcmidi mode: %d\n", pm->midi_mode); |
321 | |
322 | /*KEY_MAIL or octave down*/ |
323 | if (pm->midi_mode && bit_mask == 0x004000) { |
324 | /* octave down */ |
325 | pm->midi_octave--; |
326 | if (pm->midi_octave < -2) |
327 | pm->midi_octave = -2; |
328 | dbg_hid("pcmidi mode: %d octave: %d\n", |
329 | pm->midi_mode, pm->midi_octave); |
330 | return 1; |
331 | } |
332 | /*KEY_WWW or sustain*/ |
333 | else if (pm->midi_mode && bit_mask == 0x000004) { |
334 | /* sustain on/off*/ |
335 | pm->midi_sustain_mode ^= 0x1; |
336 | return 1; |
337 | } |
338 | |
339 | return 0; /* continue key processing */ |
340 | } |
341 | |
342 | static int pcmidi_handle_report3(struct pcmidi_snd *pm, u8 *data, int size) |
343 | { |
344 | struct pcmidi_sustain *pms; |
345 | unsigned i, j; |
346 | unsigned char status, note, velocity; |
347 | |
348 | unsigned num_notes = (size-1)/2; |
349 | for (j = 0; j < num_notes; j++) { |
350 | note = data[j*2+1]; |
351 | velocity = data[j*2+2]; |
352 | |
353 | if (note < 0x81) { /* note on */ |
354 | status = 128 + 16 + pm->midi_channel; /* 1001nnnn */ |
355 | note = note - 0x54 + PCMIDI_MIDDLE_C + |
356 | (pm->midi_octave * 12); |
357 | if (0 == velocity) |
358 | velocity = 1; /* force note on */ |
359 | } else { /* note off */ |
360 | status = 128 + pm->midi_channel; /* 1000nnnn */ |
361 | note = note - 0x94 + PCMIDI_MIDDLE_C + |
362 | (pm->midi_octave*12); |
363 | |
364 | if (pm->midi_sustain_mode) { |
365 | for (i = 0; i < PCMIDI_SUSTAINED_MAX; i++) { |
366 | pms = &pm->sustained_notes[i]; |
367 | if (!pms->in_use) { |
368 | pms->status = status; |
369 | pms->note = note; |
370 | pms->velocity = velocity; |
371 | pms->in_use = 1; |
372 | |
373 | mod_timer(&pms->timer, |
374 | jiffies + |
375 | msecs_to_jiffies(pm->midi_sustain)); |
376 | return 1; |
377 | } |
378 | } |
379 | } |
380 | } |
381 | pcmidi_send_note(pm, status, note, velocity); |
382 | } |
383 | |
384 | return 1; |
385 | } |
386 | |
387 | static int pcmidi_handle_report4(struct pcmidi_snd *pm, u8 *data) |
388 | { |
389 | unsigned key; |
390 | u32 bit_mask; |
391 | u32 bit_index; |
392 | |
393 | bit_mask = data[1]; |
394 | bit_mask = (bit_mask << 8) | data[2]; |
395 | bit_mask = (bit_mask << 8) | data[3]; |
396 | |
397 | /* break keys */ |
398 | for (bit_index = 0; bit_index < 24; bit_index++) { |
399 | key = pm->last_key[bit_index]; |
400 | if (!((0x01 << bit_index) & bit_mask)) { |
401 | input_event(pm->input_ep82, EV_KEY, |
402 | pm->last_key[bit_index], 0); |
403 | pm->last_key[bit_index] = 0; |
404 | } |
405 | } |
406 | |
407 | /* make keys */ |
408 | for (bit_index = 0; bit_index < 24; bit_index++) { |
409 | key = 0; |
410 | switch ((0x01 << bit_index) & bit_mask) { |
411 | case 0x000010: /* Fn lock*/ |
412 | pm->fn_state ^= 0x000010; |
413 | if (pm->fn_state) |
414 | pcmidi_submit_output_report(pm, 0xc5); |
415 | else |
416 | pcmidi_submit_output_report(pm, 0xc6); |
417 | continue; |
418 | case 0x020000: /* midi launcher..send a key (qwerty) or not? */ |
419 | pcmidi_submit_output_report(pm, 0xc1); |
420 | pm->midi_mode ^= 0x01; |
421 | |
422 | dbg_hid("pcmidi mode: %d\n", pm->midi_mode); |
423 | continue; |
424 | case 0x100000: /* KEY_MESSENGER or octave up */ |
425 | dbg_hid("pcmidi mode: %d\n", pm->midi_mode); |
426 | if (pm->midi_mode) { |
427 | pm->midi_octave++; |
428 | if (pm->midi_octave > 2) |
429 | pm->midi_octave = 2; |
430 | dbg_hid("pcmidi mode: %d octave: %d\n", |
431 | pm->midi_mode, pm->midi_octave); |
432 | continue; |
433 | } else |
434 | key = KEY_MESSENGER; |
435 | break; |
436 | case 0x400000: |
437 | key = KEY_CALENDAR; |
438 | break; |
439 | case 0x080000: |
440 | key = KEY_ADDRESSBOOK; |
441 | break; |
442 | case 0x040000: |
443 | key = KEY_DOCUMENTS; |
444 | break; |
445 | case 0x800000: |
446 | key = KEY_WORDPROCESSOR; |
447 | break; |
448 | case 0x200000: |
449 | key = KEY_SPREADSHEET; |
450 | break; |
451 | case 0x010000: |
452 | key = KEY_COFFEE; |
453 | break; |
454 | case 0x000100: |
455 | key = KEY_HELP; |
456 | break; |
457 | case 0x000200: |
458 | key = KEY_SEND; |
459 | break; |
460 | case 0x000400: |
461 | key = KEY_REPLY; |
462 | break; |
463 | case 0x000800: |
464 | key = KEY_FORWARDMAIL; |
465 | break; |
466 | case 0x001000: |
467 | key = KEY_NEW; |
468 | break; |
469 | case 0x002000: |
470 | key = KEY_OPEN; |
471 | break; |
472 | case 0x004000: |
473 | key = KEY_CLOSE; |
474 | break; |
475 | case 0x008000: |
476 | key = KEY_SAVE; |
477 | break; |
478 | case 0x000001: |
479 | key = KEY_UNDO; |
480 | break; |
481 | case 0x000002: |
482 | key = KEY_REDO; |
483 | break; |
484 | case 0x000004: |
485 | key = KEY_SPELLCHECK; |
486 | break; |
487 | case 0x000008: |
488 | key = KEY_PRINT; |
489 | break; |
490 | } |
491 | if (key) { |
492 | input_event(pm->input_ep82, EV_KEY, key, 1); |
493 | pm->last_key[bit_index] = key; |
494 | } |
495 | } |
496 | |
497 | return 1; |
498 | } |
499 | |
500 | static int pcmidi_handle_report( |
501 | struct pcmidi_snd *pm, unsigned report_id, u8 *data, int size) |
502 | { |
503 | int ret = 0; |
504 | |
505 | switch (report_id) { |
506 | case 0x01: /* midi keys (qwerty)*/ |
507 | ret = pcmidi_handle_report1(pm, data); |
508 | break; |
509 | case 0x03: /* midi keyboard (musical)*/ |
510 | ret = pcmidi_handle_report3(pm, data, size); |
511 | break; |
512 | case 0x04: /* multimedia/midi keys (qwerty)*/ |
513 | ret = pcmidi_handle_report4(pm, data); |
514 | break; |
515 | } |
516 | return ret; |
517 | } |
518 | |
519 | static void pcmidi_setup_extra_keys( |
520 | struct pcmidi_snd *pm, struct input_dev *input) |
521 | { |
522 | /* reassigned functionality for N/A keys |
523 | MY PICTURES => KEY_WORDPROCESSOR |
524 | MY MUSIC=> KEY_SPREADSHEET |
525 | */ |
526 | unsigned int keys[] = { |
527 | KEY_FN, |
528 | KEY_MESSENGER, KEY_CALENDAR, |
529 | KEY_ADDRESSBOOK, KEY_DOCUMENTS, |
530 | KEY_WORDPROCESSOR, |
531 | KEY_SPREADSHEET, |
532 | KEY_COFFEE, |
533 | KEY_HELP, KEY_SEND, |
534 | KEY_REPLY, KEY_FORWARDMAIL, |
535 | KEY_NEW, KEY_OPEN, |
536 | KEY_CLOSE, KEY_SAVE, |
537 | KEY_UNDO, KEY_REDO, |
538 | KEY_SPELLCHECK, KEY_PRINT, |
539 | 0 |
540 | }; |
541 | |
542 | unsigned int *pkeys = &keys[0]; |
543 | unsigned short i; |
544 | |
545 | if (pm->ifnum != 1) /* only set up ONCE for interace 1 */ |
546 | return; |
547 | |
548 | pm->input_ep82 = input; |
549 | |
550 | for (i = 0; i < 24; i++) |
551 | pm->last_key[i] = 0; |
552 | |
553 | while (*pkeys != 0) { |
554 | set_bit(*pkeys, pm->input_ep82->keybit); |
555 | ++pkeys; |
556 | } |
557 | } |
558 | |
559 | static int pcmidi_set_operational(struct pcmidi_snd *pm) |
560 | { |
561 | if (pm->ifnum != 1) |
562 | return 0; /* only set up ONCE for interace 1 */ |
563 | |
564 | pcmidi_get_output_report(pm); |
565 | pcmidi_submit_output_report(pm, 0xc1); |
566 | return 0; |
567 | } |
568 | |
569 | static int pcmidi_snd_free(struct snd_device *dev) |
570 | { |
571 | return 0; |
572 | } |
573 | |
574 | static int pcmidi_in_open(struct snd_rawmidi_substream *substream) |
575 | { |
576 | struct pcmidi_snd *pm = substream->rmidi->private_data; |
577 | |
578 | dbg_hid("pcmidi in open\n"); |
579 | pm->in_substream = substream; |
580 | return 0; |
581 | } |
582 | |
583 | static int pcmidi_in_close(struct snd_rawmidi_substream *substream) |
584 | { |
585 | dbg_hid("pcmidi in close\n"); |
586 | return 0; |
587 | } |
588 | |
589 | static void pcmidi_in_trigger(struct snd_rawmidi_substream *substream, int up) |
590 | { |
591 | struct pcmidi_snd *pm = substream->rmidi->private_data; |
592 | |
593 | dbg_hid("pcmidi in trigger %d\n", up); |
594 | |
595 | pm->in_triggered = up; |
596 | } |
597 | |
598 | static struct snd_rawmidi_ops pcmidi_in_ops = { |
599 | .open = pcmidi_in_open, |
600 | .close = pcmidi_in_close, |
601 | .trigger = pcmidi_in_trigger |
602 | }; |
603 | |
604 | static int pcmidi_snd_initialise(struct pcmidi_snd *pm) |
605 | { |
606 | static int dev; |
607 | struct snd_card *card; |
608 | struct snd_rawmidi *rwmidi; |
609 | int err; |
610 | |
611 | static struct snd_device_ops ops = { |
612 | .dev_free = pcmidi_snd_free, |
613 | }; |
614 | |
615 | if (pm->ifnum != 1) |
616 | return 0; /* only set up midi device ONCE for interace 1 */ |
617 | |
618 | if (dev >= SNDRV_CARDS) |
619 | return -ENODEV; |
620 | |
621 | if (!enable[dev]) { |
622 | dev++; |
623 | return -ENOENT; |
624 | } |
625 | |
626 | /* Setup sound card */ |
627 | |
628 | err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card); |
629 | if (err < 0) { |
630 | pk_error("failed to create pc-midi sound card\n"); |
631 | err = -ENOMEM; |
632 | goto fail; |
633 | } |
634 | pm->card = card; |
635 | |
636 | /* Setup sound device */ |
637 | err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pm, &ops); |
638 | if (err < 0) { |
639 | pk_error("failed to create pc-midi sound device: error %d\n", |
640 | err); |
641 | goto fail; |
642 | } |
643 | |
644 | strncpy(card->driver, shortname, sizeof(card->driver)); |
645 | strncpy(card->shortname, shortname, sizeof(card->shortname)); |
646 | strncpy(card->longname, longname, sizeof(card->longname)); |
647 | |
648 | /* Set up rawmidi */ |
649 | err = snd_rawmidi_new(card, card->shortname, 0, |
650 | 0, 1, &rwmidi); |
651 | if (err < 0) { |
652 | pk_error("failed to create pc-midi rawmidi device: error %d\n", |
653 | err); |
654 | goto fail; |
655 | } |
656 | pm->rwmidi = rwmidi; |
657 | strncpy(rwmidi->name, card->shortname, sizeof(rwmidi->name)); |
658 | rwmidi->info_flags = SNDRV_RAWMIDI_INFO_INPUT; |
659 | rwmidi->private_data = pm; |
660 | |
661 | snd_rawmidi_set_ops(rwmidi, SNDRV_RAWMIDI_STREAM_INPUT, |
662 | &pcmidi_in_ops); |
663 | |
664 | snd_card_set_dev(card, &pm->pk->hdev->dev); |
665 | |
666 | /* create sysfs variables */ |
667 | err = device_create_file(&pm->pk->hdev->dev, |
668 | sysfs_device_attr_channel); |
669 | if (err < 0) { |
670 | pk_error("failed to create sysfs attribute channel: error %d\n", |
671 | err); |
672 | goto fail; |
673 | } |
674 | |
675 | err = device_create_file(&pm->pk->hdev->dev, |
676 | sysfs_device_attr_sustain); |
677 | if (err < 0) { |
678 | pk_error("failed to create sysfs attribute sustain: error %d\n", |
679 | err); |
680 | goto fail_attr_sustain; |
681 | } |
682 | |
683 | err = device_create_file(&pm->pk->hdev->dev, |
684 | sysfs_device_attr_octave); |
685 | if (err < 0) { |
686 | pk_error("failed to create sysfs attribute octave: error %d\n", |
687 | err); |
688 | goto fail_attr_octave; |
689 | } |
690 | |
691 | spin_lock_init(&pm->rawmidi_in_lock); |
692 | |
693 | init_sustain_timers(pm); |
694 | pcmidi_set_operational(pm); |
695 | |
696 | /* register it */ |
697 | err = snd_card_register(card); |
698 | if (err < 0) { |
699 | pk_error("failed to register pc-midi sound card: error %d\n", |
700 | err); |
701 | goto fail_register; |
702 | } |
703 | |
704 | dbg_hid("pcmidi_snd_initialise finished ok\n"); |
705 | return 0; |
706 | |
707 | fail_register: |
708 | stop_sustain_timers(pm); |
709 | device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_octave); |
710 | fail_attr_octave: |
711 | device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_sustain); |
712 | fail_attr_sustain: |
713 | device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_channel); |
714 | fail: |
715 | if (pm->card) { |
716 | snd_card_free(pm->card); |
717 | pm->card = NULL; |
718 | } |
719 | return err; |
720 | } |
721 | |
722 | static int pcmidi_snd_terminate(struct pcmidi_snd *pm) |
723 | { |
724 | if (pm->card) { |
725 | stop_sustain_timers(pm); |
726 | |
727 | device_remove_file(&pm->pk->hdev->dev, |
728 | sysfs_device_attr_channel); |
729 | device_remove_file(&pm->pk->hdev->dev, |
730 | sysfs_device_attr_sustain); |
731 | device_remove_file(&pm->pk->hdev->dev, |
732 | sysfs_device_attr_octave); |
733 | |
734 | snd_card_disconnect(pm->card); |
735 | snd_card_free_when_closed(pm->card); |
736 | } |
737 | |
738 | return 0; |
739 | } |
740 | |
741 | /* |
742 | * PC-MIDI report descriptor for report id is wrong. |
743 | */ |
744 | static __u8 *pk_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
745 | unsigned int *rsize) |
746 | { |
747 | if (*rsize == 178 && |
748 | rdesc[111] == 0x06 && rdesc[112] == 0x00 && |
749 | rdesc[113] == 0xff) { |
750 | hid_info(hdev, |
751 | "fixing up pc-midi keyboard report descriptor\n"); |
752 | |
753 | rdesc[144] = 0x18; /* report 4: was 0x10 report count */ |
754 | } |
755 | return rdesc; |
756 | } |
757 | |
758 | static int pk_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
759 | struct hid_field *field, struct hid_usage *usage, |
760 | unsigned long **bit, int *max) |
761 | { |
762 | struct pk_device *pk = hid_get_drvdata(hdev); |
763 | struct pcmidi_snd *pm; |
764 | |
765 | pm = pk->pm; |
766 | |
767 | if (HID_UP_MSVENDOR == (usage->hid & HID_USAGE_PAGE) && |
768 | 1 == pm->ifnum) { |
769 | pcmidi_setup_extra_keys(pm, hi->input); |
770 | return 0; |
771 | } |
772 | |
773 | return 0; |
774 | } |
775 | |
776 | |
777 | static int pk_raw_event(struct hid_device *hdev, struct hid_report *report, |
778 | u8 *data, int size) |
779 | { |
780 | struct pk_device *pk = hid_get_drvdata(hdev); |
781 | int ret = 0; |
782 | |
783 | if (1 == pk->pm->ifnum) { |
784 | if (report->id == data[0]) |
785 | switch (report->id) { |
786 | case 0x01: /* midi keys (qwerty)*/ |
787 | case 0x03: /* midi keyboard (musical)*/ |
788 | case 0x04: /* extra/midi keys (qwerty)*/ |
789 | ret = pcmidi_handle_report(pk->pm, |
790 | report->id, data, size); |
791 | break; |
792 | } |
793 | } |
794 | |
795 | return ret; |
796 | } |
797 | |
798 | static int pk_probe(struct hid_device *hdev, const struct hid_device_id *id) |
799 | { |
800 | int ret; |
801 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
802 | unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber; |
803 | unsigned long quirks = id->driver_data; |
804 | struct pk_device *pk; |
805 | struct pcmidi_snd *pm = NULL; |
806 | |
807 | pk = kzalloc(sizeof(*pk), GFP_KERNEL); |
808 | if (pk == NULL) { |
809 | hid_err(hdev, "can't alloc descriptor\n"); |
810 | return -ENOMEM; |
811 | } |
812 | |
813 | pk->hdev = hdev; |
814 | |
815 | pm = kzalloc(sizeof(*pm), GFP_KERNEL); |
816 | if (pm == NULL) { |
817 | hid_err(hdev, "can't alloc descriptor\n"); |
818 | ret = -ENOMEM; |
819 | goto err_free_pk; |
820 | } |
821 | |
822 | pm->pk = pk; |
823 | pk->pm = pm; |
824 | pm->ifnum = ifnum; |
825 | |
826 | hid_set_drvdata(hdev, pk); |
827 | |
828 | ret = hid_parse(hdev); |
829 | if (ret) { |
830 | hid_err(hdev, "hid parse failed\n"); |
831 | goto err_free; |
832 | } |
833 | |
834 | if (quirks & PK_QUIRK_NOGET) { /* hid_parse cleared all the quirks */ |
835 | hdev->quirks |= HID_QUIRK_NOGET; |
836 | } |
837 | |
838 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
839 | if (ret) { |
840 | hid_err(hdev, "hw start failed\n"); |
841 | goto err_free; |
842 | } |
843 | |
844 | ret = pcmidi_snd_initialise(pm); |
845 | if (ret < 0) |
846 | goto err_stop; |
847 | |
848 | return 0; |
849 | err_stop: |
850 | hid_hw_stop(hdev); |
851 | err_free: |
852 | kfree(pm); |
853 | err_free_pk: |
854 | kfree(pk); |
855 | |
856 | return ret; |
857 | } |
858 | |
859 | static void pk_remove(struct hid_device *hdev) |
860 | { |
861 | struct pk_device *pk = hid_get_drvdata(hdev); |
862 | struct pcmidi_snd *pm; |
863 | |
864 | pm = pk->pm; |
865 | if (pm) { |
866 | pcmidi_snd_terminate(pm); |
867 | kfree(pm); |
868 | } |
869 | |
870 | hid_hw_stop(hdev); |
871 | |
872 | kfree(pk); |
873 | } |
874 | |
875 | static const struct hid_device_id pk_devices[] = { |
876 | {HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, |
877 | USB_DEVICE_ID_PRODIKEYS_PCMIDI), |
878 | .driver_data = PK_QUIRK_NOGET}, |
879 | { } |
880 | }; |
881 | MODULE_DEVICE_TABLE(hid, pk_devices); |
882 | |
883 | static struct hid_driver pk_driver = { |
884 | .name = "prodikeys", |
885 | .id_table = pk_devices, |
886 | .report_fixup = pk_report_fixup, |
887 | .input_mapping = pk_input_mapping, |
888 | .raw_event = pk_raw_event, |
889 | .probe = pk_probe, |
890 | .remove = pk_remove, |
891 | }; |
892 | module_hid_driver(pk_driver); |
893 | |
894 | MODULE_LICENSE("GPL"); |
895 |
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Tags:
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v2.6.34-rc5
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