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Merge tag 'powerpc-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
[linux/fpc-iii.git] / sound / drivers / mts64.c
blob9c708b693cb330b42ede0ffbf6cb37519c4d4f67
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * ALSA Driver for Ego Systems Inc. (ESI) Miditerminal 4140
4 * Copyright (c) 2006 by Matthias König <mk@phasorlab.de>
5 */
6
7 #include <linux/init.h>
8 #include <linux/platform_device.h>
9 #include <linux/parport.h>
10 #include <linux/spinlock.h>
11 #include <linux/module.h>
12 #include <linux/delay.h>
13 #include <linux/slab.h>
14 #include <sound/core.h>
15 #include <sound/initval.h>
16 #include <sound/rawmidi.h>
17 #include <sound/control.h>
18
19 #define CARD_NAME "Miditerminal 4140"
20 #define DRIVER_NAME "MTS64"
21 #define PLATFORM_DRIVER "snd_mts64"
22
23 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
24 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
25 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
26
27 static struct platform_device *platform_devices[SNDRV_CARDS];
28 static int device_count;
29
30 module_param_array(index, int, NULL, 0444);
31 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
32 module_param_array(id, charp, NULL, 0444);
33 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
34 module_param_array(enable, bool, NULL, 0444);
35 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
36
37 MODULE_AUTHOR("Matthias Koenig <mk@phasorlab.de>");
38 MODULE_DESCRIPTION("ESI Miditerminal 4140");
39 MODULE_LICENSE("GPL");
40 MODULE_SUPPORTED_DEVICE("{{ESI,Miditerminal 4140}}");
41
42 /*********************************************************************
43 * Chip specific
44 *********************************************************************/
45 #define MTS64_NUM_INPUT_PORTS 5
46 #define MTS64_NUM_OUTPUT_PORTS 4
47 #define MTS64_SMPTE_SUBSTREAM 4
48
49 struct mts64 {
50 spinlock_t lock;
51 struct snd_card *card;
52 struct snd_rawmidi *rmidi;
53 struct pardevice *pardev;
54 int open_count;
55 int current_midi_output_port;
56 int current_midi_input_port;
57 u8 mode[MTS64_NUM_INPUT_PORTS];
58 struct snd_rawmidi_substream *midi_input_substream[MTS64_NUM_INPUT_PORTS];
59 int smpte_switch;
60 u8 time[4]; /* [0]=hh, [1]=mm, [2]=ss, [3]=ff */
61 u8 fps;
62 };
63
64 static int snd_mts64_free(struct mts64 *mts)
65 {
66 kfree(mts);
67 return 0;
68 }
69
70 static int snd_mts64_create(struct snd_card *card,
71 struct pardevice *pardev,
72 struct mts64 **rchip)
73 {
74 struct mts64 *mts;
75
76 *rchip = NULL;
77
78 mts = kzalloc(sizeof(struct mts64), GFP_KERNEL);
79 if (mts == NULL)
80 return -ENOMEM;
81
82 /* Init chip specific data */
83 spin_lock_init(&mts->lock);
84 mts->card = card;
85 mts->pardev = pardev;
86 mts->current_midi_output_port = -1;
87 mts->current_midi_input_port = -1;
88
89 *rchip = mts;
90
91 return 0;
92 }
93
94 /*********************************************************************
95 * HW register related constants
96 *********************************************************************/
97
98 /* Status Bits */
99 #define MTS64_STAT_BSY 0x80
100 #define MTS64_STAT_BIT_SET 0x20 /* readout process, bit is set */
101 #define MTS64_STAT_PORT 0x10 /* read byte is a port number */
102
103 /* Control Bits */
104 #define MTS64_CTL_READOUT 0x08 /* enable readout */
105 #define MTS64_CTL_WRITE_CMD 0x06
106 #define MTS64_CTL_WRITE_DATA 0x02
107 #define MTS64_CTL_STROBE 0x01
108
109 /* Command */
110 #define MTS64_CMD_RESET 0xfe
111 #define MTS64_CMD_PROBE 0x8f /* Used in probing procedure */
112 #define MTS64_CMD_SMPTE_SET_TIME 0xe8
113 #define MTS64_CMD_SMPTE_SET_FPS 0xee
114 #define MTS64_CMD_SMPTE_STOP 0xef
115 #define MTS64_CMD_SMPTE_FPS_24 0xe3
116 #define MTS64_CMD_SMPTE_FPS_25 0xe2
117 #define MTS64_CMD_SMPTE_FPS_2997 0xe4
118 #define MTS64_CMD_SMPTE_FPS_30D 0xe1
119 #define MTS64_CMD_SMPTE_FPS_30 0xe0
120 #define MTS64_CMD_COM_OPEN 0xf8 /* setting the communication mode */
121 #define MTS64_CMD_COM_CLOSE1 0xff /* clearing communication mode */
122 #define MTS64_CMD_COM_CLOSE2 0xf5
123
124 /*********************************************************************
125 * Hardware specific functions
126 *********************************************************************/
127 static void mts64_enable_readout(struct parport *p);
128 static void mts64_disable_readout(struct parport *p);
129 static int mts64_device_ready(struct parport *p);
130 static int mts64_device_init(struct parport *p);
131 static int mts64_device_open(struct mts64 *mts);
132 static int mts64_device_close(struct mts64 *mts);
133 static u8 mts64_map_midi_input(u8 c);
134 static int mts64_probe(struct parport *p);
135 static u16 mts64_read(struct parport *p);
136 static u8 mts64_read_char(struct parport *p);
137 static void mts64_smpte_start(struct parport *p,
138 u8 hours, u8 minutes,
139 u8 seconds, u8 frames,
140 u8 idx);
141 static void mts64_smpte_stop(struct parport *p);
142 static void mts64_write_command(struct parport *p, u8 c);
143 static void mts64_write_data(struct parport *p, u8 c);
144 static void mts64_write_midi(struct mts64 *mts, u8 c, int midiport);
145
146
147 /* Enables the readout procedure
148 *
149 * Before we can read a midi byte from the device, we have to set
150 * bit 3 of control port.
151 */
152 static void mts64_enable_readout(struct parport *p)
153 {
154 u8 c;
155
156 c = parport_read_control(p);
157 c |= MTS64_CTL_READOUT;
158 parport_write_control(p, c);
159 }
160
161 /* Disables readout
162 *
163 * Readout is disabled by clearing bit 3 of control
164 */
165 static void mts64_disable_readout(struct parport *p)
166 {
167 u8 c;
168
169 c = parport_read_control(p);
170 c &= ~MTS64_CTL_READOUT;
171 parport_write_control(p, c);
172 }
173
174 /* waits for device ready
175 *
176 * Checks if BUSY (Bit 7 of status) is clear
177 * 1 device ready
178 * 0 failure
179 */
180 static int mts64_device_ready(struct parport *p)
181 {
182 int i;
183 u8 c;
184
185 for (i = 0; i < 0xffff; ++i) {
186 c = parport_read_status(p);
187 c &= MTS64_STAT_BSY;
188 if (c != 0)
189 return 1;
190 }
191
192 return 0;
193 }
194
195 /* Init device (LED blinking startup magic)
196 *
197 * Returns:
198 * 0 init ok
199 * -EIO failure
200 */
201 static int mts64_device_init(struct parport *p)
202 {
203 int i;
204
205 mts64_write_command(p, MTS64_CMD_RESET);
206
207 for (i = 0; i < 64; ++i) {
208 msleep(100);
209
210 if (mts64_probe(p) == 0) {
211 /* success */
212 mts64_disable_readout(p);
213 return 0;
214 }
215 }
216 mts64_disable_readout(p);
217
218 return -EIO;
219 }
220
221 /*
222 * Opens the device (set communication mode)
223 */
224 static int mts64_device_open(struct mts64 *mts)
225 {
226 int i;
227 struct parport *p = mts->pardev->port;
228
229 for (i = 0; i < 5; ++i)
230 mts64_write_command(p, MTS64_CMD_COM_OPEN);
231
232 return 0;
233 }
234
235 /*
236 * Close device (clear communication mode)
237 */
238 static int mts64_device_close(struct mts64 *mts)
239 {
240 int i;
241 struct parport *p = mts->pardev->port;
242
243 for (i = 0; i < 5; ++i) {
244 mts64_write_command(p, MTS64_CMD_COM_CLOSE1);
245 mts64_write_command(p, MTS64_CMD_COM_CLOSE2);
246 }
247
248 return 0;
249 }
250
251 /* map hardware port to substream number
252 *
253 * When reading a byte from the device, the device tells us
254 * on what port the byte is. This HW port has to be mapped to
255 * the midiport (substream number).
256 * substream 0-3 are Midiports 1-4
257 * substream 4 is SMPTE Timecode
258 * The mapping is done by the table:
259 * HW | 0 | 1 | 2 | 3 | 4
260 * SW | 0 | 1 | 4 | 2 | 3
261 */
262 static u8 mts64_map_midi_input(u8 c)
263 {
264 static const u8 map[] = { 0, 1, 4, 2, 3 };
265
266 return map[c];
267 }
268
269
270 /* Probe parport for device
271 *
272 * Do we have a Miditerminal 4140 on parport?
273 * Returns:
274 * 0 device found
275 * -ENODEV no device
276 */
277 static int mts64_probe(struct parport *p)
278 {
279 u8 c;
280
281 mts64_smpte_stop(p);
282 mts64_write_command(p, MTS64_CMD_PROBE);
283
284 msleep(50);
285
286 c = mts64_read(p);
287
288 c &= 0x00ff;
289 if (c != MTS64_CMD_PROBE)
290 return -ENODEV;
291 else
292 return 0;
293
294 }
295
296 /* Read byte incl. status from device
297 *
298 * Returns:
299 * data in lower 8 bits and status in upper 8 bits
300 */
301 static u16 mts64_read(struct parport *p)
302 {
303 u8 data, status;
304
305 mts64_device_ready(p);
306 mts64_enable_readout(p);
307 status = parport_read_status(p);
308 data = mts64_read_char(p);
309 mts64_disable_readout(p);
310
311 return (status << 8) | data;
312 }
313
314 /* Read a byte from device
315 *
316 * Note, that readout mode has to be enabled.
317 * readout procedure is as follows:
318 * - Write number of the Bit to read to DATA
319 * - Read STATUS
320 * - Bit 5 of STATUS indicates if Bit is set
321 *
322 * Returns:
323 * Byte read from device
324 */
325 static u8 mts64_read_char(struct parport *p)
326 {
327 u8 c = 0;
328 u8 status;
329 u8 i;
330
331 for (i = 0; i < 8; ++i) {
332 parport_write_data(p, i);
333 c >>= 1;
334 status = parport_read_status(p);
335 if (status & MTS64_STAT_BIT_SET)
336 c |= 0x80;
337 }
338
339 return c;
340 }
341
342 /* Starts SMPTE Timecode generation
343 *
344 * The device creates SMPTE Timecode by hardware.
345 * 0 24 fps
346 * 1 25 fps
347 * 2 29.97 fps
348 * 3 30 fps (Drop-frame)
349 * 4 30 fps
350 */
351 static void mts64_smpte_start(struct parport *p,
352 u8 hours, u8 minutes,
353 u8 seconds, u8 frames,
354 u8 idx)
355 {
356 static const u8 fps[5] = { MTS64_CMD_SMPTE_FPS_24,
357 MTS64_CMD_SMPTE_FPS_25,
358 MTS64_CMD_SMPTE_FPS_2997,
359 MTS64_CMD_SMPTE_FPS_30D,
360 MTS64_CMD_SMPTE_FPS_30 };
361
362 mts64_write_command(p, MTS64_CMD_SMPTE_SET_TIME);
363 mts64_write_command(p, frames);
364 mts64_write_command(p, seconds);
365 mts64_write_command(p, minutes);
366 mts64_write_command(p, hours);
367
368 mts64_write_command(p, MTS64_CMD_SMPTE_SET_FPS);
369 mts64_write_command(p, fps[idx]);
370 }
371
372 /* Stops SMPTE Timecode generation
373 */
374 static void mts64_smpte_stop(struct parport *p)
375 {
376 mts64_write_command(p, MTS64_CMD_SMPTE_STOP);
377 }
378
379 /* Write a command byte to device
380 */
381 static void mts64_write_command(struct parport *p, u8 c)
382 {
383 mts64_device_ready(p);
384
385 parport_write_data(p, c);
386
387 parport_write_control(p, MTS64_CTL_WRITE_CMD);
388 parport_write_control(p, MTS64_CTL_WRITE_CMD | MTS64_CTL_STROBE);
389 parport_write_control(p, MTS64_CTL_WRITE_CMD);
390 }
391
392 /* Write a data byte to device
393 */
394 static void mts64_write_data(struct parport *p, u8 c)
395 {
396 mts64_device_ready(p);
397
398 parport_write_data(p, c);
399
400 parport_write_control(p, MTS64_CTL_WRITE_DATA);
401 parport_write_control(p, MTS64_CTL_WRITE_DATA | MTS64_CTL_STROBE);
402 parport_write_control(p, MTS64_CTL_WRITE_DATA);
403 }
404
405 /* Write a MIDI byte to midiport
406 *
407 * midiport ranges from 0-3 and maps to Ports 1-4
408 * assumptions: communication mode is on
409 */
410 static void mts64_write_midi(struct mts64 *mts, u8 c,
411 int midiport)
412 {
413 struct parport *p = mts->pardev->port;
414
415 /* check current midiport */
416 if (mts->current_midi_output_port != midiport)
417 mts64_write_command(p, midiport);
418
419 /* write midi byte */
420 mts64_write_data(p, c);
421 }
422
423 /*********************************************************************
424 * Control elements
425 *********************************************************************/
426
427 /* SMPTE Switch */
428 #define snd_mts64_ctl_smpte_switch_info snd_ctl_boolean_mono_info
429
430 static int snd_mts64_ctl_smpte_switch_get(struct snd_kcontrol* kctl,
431 struct snd_ctl_elem_value *uctl)
432 {
433 struct mts64 *mts = snd_kcontrol_chip(kctl);
434
435 spin_lock_irq(&mts->lock);
436 uctl->value.integer.value[0] = mts->smpte_switch;
437 spin_unlock_irq(&mts->lock);
438
439 return 0;
440 }
441
442 /* smpte_switch is not accessed from IRQ handler, so we just need
443 to protect the HW access */
444 static int snd_mts64_ctl_smpte_switch_put(struct snd_kcontrol* kctl,
445 struct snd_ctl_elem_value *uctl)
446 {
447 struct mts64 *mts = snd_kcontrol_chip(kctl);
448 int changed = 0;
449 int val = !!uctl->value.integer.value[0];
450
451 spin_lock_irq(&mts->lock);
452 if (mts->smpte_switch == val)
453 goto __out;
454
455 changed = 1;
456 mts->smpte_switch = val;
457 if (mts->smpte_switch) {
458 mts64_smpte_start(mts->pardev->port,
459 mts->time[0], mts->time[1],
460 mts->time[2], mts->time[3],
461 mts->fps);
462 } else {
463 mts64_smpte_stop(mts->pardev->port);
464 }
465 __out:
466 spin_unlock_irq(&mts->lock);
467 return changed;
468 }
469
470 static const struct snd_kcontrol_new mts64_ctl_smpte_switch = {
471 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
472 .name = "SMPTE Playback Switch",
473 .index = 0,
474 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
475 .private_value = 0,
476 .info = snd_mts64_ctl_smpte_switch_info,
477 .get = snd_mts64_ctl_smpte_switch_get,
478 .put = snd_mts64_ctl_smpte_switch_put
479 };
480
481 /* Time */
482 static int snd_mts64_ctl_smpte_time_h_info(struct snd_kcontrol *kctl,
483 struct snd_ctl_elem_info *uinfo)
484 {
485 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
486 uinfo->count = 1;
487 uinfo->value.integer.min = 0;
488 uinfo->value.integer.max = 23;
489 return 0;
490 }
491
492 static int snd_mts64_ctl_smpte_time_f_info(struct snd_kcontrol *kctl,
493 struct snd_ctl_elem_info *uinfo)
494 {
495 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
496 uinfo->count = 1;
497 uinfo->value.integer.min = 0;
498 uinfo->value.integer.max = 99;
499 return 0;
500 }
501
502 static int snd_mts64_ctl_smpte_time_info(struct snd_kcontrol *kctl,
503 struct snd_ctl_elem_info *uinfo)
504 {
505 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
506 uinfo->count = 1;
507 uinfo->value.integer.min = 0;
508 uinfo->value.integer.max = 59;
509 return 0;
510 }
511
512 static int snd_mts64_ctl_smpte_time_get(struct snd_kcontrol *kctl,
513 struct snd_ctl_elem_value *uctl)
514 {
515 struct mts64 *mts = snd_kcontrol_chip(kctl);
516 int idx = kctl->private_value;
517
518 spin_lock_irq(&mts->lock);
519 uctl->value.integer.value[0] = mts->time[idx];
520 spin_unlock_irq(&mts->lock);
521
522 return 0;
523 }
524
525 static int snd_mts64_ctl_smpte_time_put(struct snd_kcontrol *kctl,
526 struct snd_ctl_elem_value *uctl)
527 {
528 struct mts64 *mts = snd_kcontrol_chip(kctl);
529 int idx = kctl->private_value;
530 unsigned int time = uctl->value.integer.value[0] % 60;
531 int changed = 0;
532
533 spin_lock_irq(&mts->lock);
534 if (mts->time[idx] != time) {
535 changed = 1;
536 mts->time[idx] = time;
537 }
538 spin_unlock_irq(&mts->lock);
539
540 return changed;
541 }
542
543 static const struct snd_kcontrol_new mts64_ctl_smpte_time_hours = {
544 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
545 .name = "SMPTE Time Hours",
546 .index = 0,
547 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
548 .private_value = 0,
549 .info = snd_mts64_ctl_smpte_time_h_info,
550 .get = snd_mts64_ctl_smpte_time_get,
551 .put = snd_mts64_ctl_smpte_time_put
552 };
553
554 static const struct snd_kcontrol_new mts64_ctl_smpte_time_minutes = {
555 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
556 .name = "SMPTE Time Minutes",
557 .index = 0,
558 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
559 .private_value = 1,
560 .info = snd_mts64_ctl_smpte_time_info,
561 .get = snd_mts64_ctl_smpte_time_get,
562 .put = snd_mts64_ctl_smpte_time_put
563 };
564
565 static const struct snd_kcontrol_new mts64_ctl_smpte_time_seconds = {
566 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
567 .name = "SMPTE Time Seconds",
568 .index = 0,
569 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
570 .private_value = 2,
571 .info = snd_mts64_ctl_smpte_time_info,
572 .get = snd_mts64_ctl_smpte_time_get,
573 .put = snd_mts64_ctl_smpte_time_put
574 };
575
576 static const struct snd_kcontrol_new mts64_ctl_smpte_time_frames = {
577 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
578 .name = "SMPTE Time Frames",
579 .index = 0,
580 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
581 .private_value = 3,
582 .info = snd_mts64_ctl_smpte_time_f_info,
583 .get = snd_mts64_ctl_smpte_time_get,
584 .put = snd_mts64_ctl_smpte_time_put
585 };
586
587 /* FPS */
588 static int snd_mts64_ctl_smpte_fps_info(struct snd_kcontrol *kctl,
589 struct snd_ctl_elem_info *uinfo)
590 {
591 static const char * const texts[5] = {
592 "24", "25", "29.97", "30D", "30"
593 };
594
595 return snd_ctl_enum_info(uinfo, 1, 5, texts);
596 }
597
598 static int snd_mts64_ctl_smpte_fps_get(struct snd_kcontrol *kctl,
599 struct snd_ctl_elem_value *uctl)
600 {
601 struct mts64 *mts = snd_kcontrol_chip(kctl);
602
603 spin_lock_irq(&mts->lock);
604 uctl->value.enumerated.item[0] = mts->fps;
605 spin_unlock_irq(&mts->lock);
606
607 return 0;
608 }
609
610 static int snd_mts64_ctl_smpte_fps_put(struct snd_kcontrol *kctl,
611 struct snd_ctl_elem_value *uctl)
612 {
613 struct mts64 *mts = snd_kcontrol_chip(kctl);
614 int changed = 0;
615
616 if (uctl->value.enumerated.item[0] >= 5)
617 return -EINVAL;
618 spin_lock_irq(&mts->lock);
619 if (mts->fps != uctl->value.enumerated.item[0]) {
620 changed = 1;
621 mts->fps = uctl->value.enumerated.item[0];
622 }
623 spin_unlock_irq(&mts->lock);
624
625 return changed;
626 }
627
628 static const struct snd_kcontrol_new mts64_ctl_smpte_fps = {
629 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
630 .name = "SMPTE Fps",
631 .index = 0,
632 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
633 .private_value = 0,
634 .info = snd_mts64_ctl_smpte_fps_info,
635 .get = snd_mts64_ctl_smpte_fps_get,
636 .put = snd_mts64_ctl_smpte_fps_put
637 };
638
639
640 static int snd_mts64_ctl_create(struct snd_card *card,
641 struct mts64 *mts)
642 {
643 int err, i;
644 static const struct snd_kcontrol_new *control[] = {
645 &mts64_ctl_smpte_switch,
646 &mts64_ctl_smpte_time_hours,
647 &mts64_ctl_smpte_time_minutes,
648 &mts64_ctl_smpte_time_seconds,
649 &mts64_ctl_smpte_time_frames,
650 &mts64_ctl_smpte_fps,
651 NULL };
652
653 for (i = 0; control[i]; ++i) {
654 err = snd_ctl_add(card, snd_ctl_new1(control[i], mts));
655 if (err < 0) {
656 snd_printd("Cannot create control: %s\n",
657 control[i]->name);
658 return err;
659 }
660 }
661
662 return 0;
663 }
664
665 /*********************************************************************
666 * Rawmidi
667 *********************************************************************/
668 #define MTS64_MODE_INPUT_TRIGGERED 0x01
669
670 static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream)
671 {
672 struct mts64 *mts = substream->rmidi->private_data;
673
674 if (mts->open_count == 0) {
675 /* We don't need a spinlock here, because this is just called
676 if the device has not been opened before.
677 So there aren't any IRQs from the device */
678 mts64_device_open(mts);
679
680 msleep(50);
681 }
682 ++(mts->open_count);
683
684 return 0;
685 }
686
687 static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream)
688 {
689 struct mts64 *mts = substream->rmidi->private_data;
690 unsigned long flags;
691
692 --(mts->open_count);
693 if (mts->open_count == 0) {
694 /* We need the spinlock_irqsave here because we can still
695 have IRQs at this point */
696 spin_lock_irqsave(&mts->lock, flags);
697 mts64_device_close(mts);
698 spin_unlock_irqrestore(&mts->lock, flags);
699
700 msleep(500);
701
702 } else if (mts->open_count < 0)
703 mts->open_count = 0;
704
705 return 0;
706 }
707
708 static void snd_mts64_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,
709 int up)
710 {
711 struct mts64 *mts = substream->rmidi->private_data;
712 u8 data;
713 unsigned long flags;
714
715 spin_lock_irqsave(&mts->lock, flags);
716 while (snd_rawmidi_transmit_peek(substream, &data, 1) == 1) {
717 mts64_write_midi(mts, data, substream->number+1);
718 snd_rawmidi_transmit_ack(substream, 1);
719 }
720 spin_unlock_irqrestore(&mts->lock, flags);
721 }
722
723 static void snd_mts64_rawmidi_input_trigger(struct snd_rawmidi_substream *substream,
724 int up)
725 {
726 struct mts64 *mts = substream->rmidi->private_data;
727 unsigned long flags;
728
729 spin_lock_irqsave(&mts->lock, flags);
730 if (up)
731 mts->mode[substream->number] |= MTS64_MODE_INPUT_TRIGGERED;
732 else
733 mts->mode[substream->number] &= ~MTS64_MODE_INPUT_TRIGGERED;
734
735 spin_unlock_irqrestore(&mts->lock, flags);
736 }
737
738 static const struct snd_rawmidi_ops snd_mts64_rawmidi_output_ops = {
739 .open = snd_mts64_rawmidi_open,
740 .close = snd_mts64_rawmidi_close,
741 .trigger = snd_mts64_rawmidi_output_trigger
742 };
743
744 static const struct snd_rawmidi_ops snd_mts64_rawmidi_input_ops = {
745 .open = snd_mts64_rawmidi_open,
746 .close = snd_mts64_rawmidi_close,
747 .trigger = snd_mts64_rawmidi_input_trigger
748 };
749
750 /* Create and initialize the rawmidi component */
751 static int snd_mts64_rawmidi_create(struct snd_card *card)
752 {
753 struct mts64 *mts = card->private_data;
754 struct snd_rawmidi *rmidi;
755 struct snd_rawmidi_substream *substream;
756 struct list_head *list;
757 int err;
758
759 err = snd_rawmidi_new(card, CARD_NAME, 0,
760 MTS64_NUM_OUTPUT_PORTS,
761 MTS64_NUM_INPUT_PORTS,
762 &rmidi);
763 if (err < 0)
764 return err;
765
766 rmidi->private_data = mts;
767 strcpy(rmidi->name, CARD_NAME);
768 rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
769 SNDRV_RAWMIDI_INFO_INPUT |
770 SNDRV_RAWMIDI_INFO_DUPLEX;
771
772 mts->rmidi = rmidi;
773
774 /* register rawmidi ops */
775 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
776 &snd_mts64_rawmidi_output_ops);
777 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
778 &snd_mts64_rawmidi_input_ops);
779
780 /* name substreams */
781 /* output */
782 list_for_each(list,
783 &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
784 substream = list_entry(list, struct snd_rawmidi_substream, list);
785 sprintf(substream->name,
786 "Miditerminal %d", substream->number+1);
787 }
788 /* input */
789 list_for_each(list,
790 &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
791 substream = list_entry(list, struct snd_rawmidi_substream, list);
792 mts->midi_input_substream[substream->number] = substream;
793 switch(substream->number) {
794 case MTS64_SMPTE_SUBSTREAM:
795 strcpy(substream->name, "Miditerminal SMPTE");
796 break;
797 default:
798 sprintf(substream->name,
799 "Miditerminal %d", substream->number+1);
800 }
801 }
802
803 /* controls */
804 err = snd_mts64_ctl_create(card, mts);
805
806 return err;
807 }
808
809 /*********************************************************************
810 * parport stuff
811 *********************************************************************/
812 static void snd_mts64_interrupt(void *private)
813 {
814 struct mts64 *mts = ((struct snd_card*)private)->private_data;
815 u16 ret;
816 u8 status, data;
817 struct snd_rawmidi_substream *substream;
818
819 spin_lock(&mts->lock);
820 ret = mts64_read(mts->pardev->port);
821 data = ret & 0x00ff;
822 status = ret >> 8;
823
824 if (status & MTS64_STAT_PORT) {
825 mts->current_midi_input_port = mts64_map_midi_input(data);
826 } else {
827 if (mts->current_midi_input_port == -1)
828 goto __out;
829 substream = mts->midi_input_substream[mts->current_midi_input_port];
830 if (mts->mode[substream->number] & MTS64_MODE_INPUT_TRIGGERED)
831 snd_rawmidi_receive(substream, &data, 1);
832 }
833 __out:
834 spin_unlock(&mts->lock);
835 }
836
837 static void snd_mts64_attach(struct parport *p)
838 {
839 struct platform_device *device;
840
841 device = platform_device_alloc(PLATFORM_DRIVER, device_count);
842 if (!device)
843 return;
844
845 /* Temporary assignment to forward the parport */
846 platform_set_drvdata(device, p);
847
848 if (platform_device_add(device) < 0) {
849 platform_device_put(device);
850 return;
851 }
852
853 /* Since we dont get the return value of probe
854 * We need to check if device probing succeeded or not */
855 if (!platform_get_drvdata(device)) {
856 platform_device_unregister(device);
857 return;
858 }
859
860 /* register device in global table */
861 platform_devices[device_count] = device;
862 device_count++;
863 }
864
865 static void snd_mts64_detach(struct parport *p)
866 {
867 /* nothing to do here */
868 }
869
870 static int snd_mts64_dev_probe(struct pardevice *pardev)
871 {
872 if (strcmp(pardev->name, DRIVER_NAME))
873 return -ENODEV;
874
875 return 0;
876 }
877
878 static struct parport_driver mts64_parport_driver = {
879 .name = "mts64",
880 .probe = snd_mts64_dev_probe,
881 .match_port = snd_mts64_attach,
882 .detach = snd_mts64_detach,
883 .devmodel = true,
884 };
885
886 /*********************************************************************
887 * platform stuff
888 *********************************************************************/
889 static void snd_mts64_card_private_free(struct snd_card *card)
890 {
891 struct mts64 *mts = card->private_data;
892 struct pardevice *pardev = mts->pardev;
893
894 if (pardev) {
895 parport_release(pardev);
896 parport_unregister_device(pardev);
897 }
898
899 snd_mts64_free(mts);
900 }
901
902 static int snd_mts64_probe(struct platform_device *pdev)
903 {
904 struct pardevice *pardev;
905 struct parport *p;
906 int dev = pdev->id;
907 struct snd_card *card = NULL;
908 struct mts64 *mts = NULL;
909 int err;
910 struct pardev_cb mts64_cb = {
911 .preempt = NULL,
912 .wakeup = NULL,
913 .irq_func = snd_mts64_interrupt, /* ISR */
914 .flags = PARPORT_DEV_EXCL, /* flags */
915 };
916
917 p = platform_get_drvdata(pdev);
918 platform_set_drvdata(pdev, NULL);
919
920 if (dev >= SNDRV_CARDS)
921 return -ENODEV;
922 if (!enable[dev])
923 return -ENOENT;
924
925 err = snd_card_new(&pdev->dev, index[dev], id[dev], THIS_MODULE,
926 0, &card);
927 if (err < 0) {
928 snd_printd("Cannot create card\n");
929 return err;
930 }
931 strcpy(card->driver, DRIVER_NAME);
932 strcpy(card->shortname, "ESI " CARD_NAME);
933 sprintf(card->longname, "%s at 0x%lx, irq %i",
934 card->shortname, p->base, p->irq);
935
936 mts64_cb.private = card; /* private */
937 pardev = parport_register_dev_model(p, /* port */
938 DRIVER_NAME, /* name */
939 &mts64_cb, /* callbacks */
940 pdev->id); /* device number */
941 if (!pardev) {
942 snd_printd("Cannot register pardevice\n");
943 err = -EIO;
944 goto __err;
945 }
946
947 /* claim parport */
948 if (parport_claim(pardev)) {
949 snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base);
950 err = -EIO;
951 goto free_pardev;
952 }
953
954 if ((err = snd_mts64_create(card, pardev, &mts)) < 0) {
955 snd_printd("Cannot create main component\n");
956 goto release_pardev;
957 }
958 card->private_data = mts;
959 card->private_free = snd_mts64_card_private_free;
960
961 err = mts64_probe(p);
962 if (err) {
963 err = -EIO;
964 goto __err;
965 }
966
967 if ((err = snd_mts64_rawmidi_create(card)) < 0) {
968 snd_printd("Creating Rawmidi component failed\n");
969 goto __err;
970 }
971
972 /* init device */
973 if ((err = mts64_device_init(p)) < 0)
974 goto __err;
975
976 platform_set_drvdata(pdev, card);
977
978 /* At this point card will be usable */
979 if ((err = snd_card_register(card)) < 0) {
980 snd_printd("Cannot register card\n");
981 goto __err;
982 }
983
984 snd_printk(KERN_INFO "ESI Miditerminal 4140 on 0x%lx\n", p->base);
985 return 0;
986
987 release_pardev:
988 parport_release(pardev);
989 free_pardev:
990 parport_unregister_device(pardev);
991 __err:
992 snd_card_free(card);
993 return err;
994 }
995
996 static int snd_mts64_remove(struct platform_device *pdev)
997 {
998 struct snd_card *card = platform_get_drvdata(pdev);
999
1000 if (card)
1001 snd_card_free(card);
1002
1003 return 0;
1004 }
1005
1006 static struct platform_driver snd_mts64_driver = {
1007 .probe = snd_mts64_probe,
1008 .remove = snd_mts64_remove,
1009 .driver = {
1010 .name = PLATFORM_DRIVER,
1011 }
1012 };
1013
1014 /*********************************************************************
1015 * module init stuff
1016 *********************************************************************/
1017 static void snd_mts64_unregister_all(void)
1018 {
1019 int i;
1020
1021 for (i = 0; i < SNDRV_CARDS; ++i) {
1022 if (platform_devices[i]) {
1023 platform_device_unregister(platform_devices[i]);
1024 platform_devices[i] = NULL;
1025 }
1026 }
1027 platform_driver_unregister(&snd_mts64_driver);
1028 parport_unregister_driver(&mts64_parport_driver);
1029 }
1030
1031 static int __init snd_mts64_module_init(void)
1032 {
1033 int err;
1034
1035 if ((err = platform_driver_register(&snd_mts64_driver)) < 0)
1036 return err;
1037
1038 if (parport_register_driver(&mts64_parport_driver) != 0) {
1039 platform_driver_unregister(&snd_mts64_driver);
1040 return -EIO;
1041 }
1042
1043 if (device_count == 0) {
1044 snd_mts64_unregister_all();
1045 return -ENODEV;
1046 }
1047
1048 return 0;
1049 }
1050
1051 static void __exit snd_mts64_module_exit(void)
1052 {
1053 snd_mts64_unregister_all();
1054 }
1055
1056 module_init(snd_mts64_module_init);
1057 module_exit(snd_mts64_module_exit);
Linux with added FPC-III support