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drm/i915: Respect alternate_aux_channel for all DDI ports
[linux/fpc-iii.git] / sound / drivers / mts64.c
blobfd4d18df84d3666c62482c07da0a6cf694f61e47
1 /*
2 * ALSA Driver for Ego Systems Inc. (ESI) Miditerminal 4140
3 * Copyright (c) 2006 by Matthias König <mk@phasorlab.de>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 */
20
21 #include <linux/init.h>
22 #include <linux/platform_device.h>
23 #include <linux/parport.h>
24 #include <linux/spinlock.h>
25 #include <linux/module.h>
26 #include <linux/delay.h>
27 #include <linux/slab.h>
28 #include <sound/core.h>
29 #include <sound/initval.h>
30 #include <sound/rawmidi.h>
31 #include <sound/control.h>
32
33 #define CARD_NAME "Miditerminal 4140"
34 #define DRIVER_NAME "MTS64"
35 #define PLATFORM_DRIVER "snd_mts64"
36
37 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
38 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
39 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
40
41 static struct platform_device *platform_devices[SNDRV_CARDS];
42 static int device_count;
43
44 module_param_array(index, int, NULL, S_IRUGO);
45 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
46 module_param_array(id, charp, NULL, S_IRUGO);
47 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
48 module_param_array(enable, bool, NULL, S_IRUGO);
49 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
50
51 MODULE_AUTHOR("Matthias Koenig <mk@phasorlab.de>");
52 MODULE_DESCRIPTION("ESI Miditerminal 4140");
53 MODULE_LICENSE("GPL");
54 MODULE_SUPPORTED_DEVICE("{{ESI,Miditerminal 4140}}");
55
56 /*********************************************************************
57 * Chip specific
58 *********************************************************************/
59 #define MTS64_NUM_INPUT_PORTS 5
60 #define MTS64_NUM_OUTPUT_PORTS 4
61 #define MTS64_SMPTE_SUBSTREAM 4
62
63 struct mts64 {
64 spinlock_t lock;
65 struct snd_card *card;
66 struct snd_rawmidi *rmidi;
67 struct pardevice *pardev;
68 int open_count;
69 int current_midi_output_port;
70 int current_midi_input_port;
71 u8 mode[MTS64_NUM_INPUT_PORTS];
72 struct snd_rawmidi_substream *midi_input_substream[MTS64_NUM_INPUT_PORTS];
73 int smpte_switch;
74 u8 time[4]; /* [0]=hh, [1]=mm, [2]=ss, [3]=ff */
75 u8 fps;
76 };
77
78 static int snd_mts64_free(struct mts64 *mts)
79 {
80 kfree(mts);
81 return 0;
82 }
83
84 static int snd_mts64_create(struct snd_card *card,
85 struct pardevice *pardev,
86 struct mts64 **rchip)
87 {
88 struct mts64 *mts;
89
90 *rchip = NULL;
91
92 mts = kzalloc(sizeof(struct mts64), GFP_KERNEL);
93 if (mts == NULL)
94 return -ENOMEM;
95
96 /* Init chip specific data */
97 spin_lock_init(&mts->lock);
98 mts->card = card;
99 mts->pardev = pardev;
100 mts->current_midi_output_port = -1;
101 mts->current_midi_input_port = -1;
102
103 *rchip = mts;
104
105 return 0;
106 }
107
108 /*********************************************************************
109 * HW register related constants
110 *********************************************************************/
111
112 /* Status Bits */
113 #define MTS64_STAT_BSY 0x80
114 #define MTS64_STAT_BIT_SET 0x20 /* readout process, bit is set */
115 #define MTS64_STAT_PORT 0x10 /* read byte is a port number */
116
117 /* Control Bits */
118 #define MTS64_CTL_READOUT 0x08 /* enable readout */
119 #define MTS64_CTL_WRITE_CMD 0x06
120 #define MTS64_CTL_WRITE_DATA 0x02
121 #define MTS64_CTL_STROBE 0x01
122
123 /* Command */
124 #define MTS64_CMD_RESET 0xfe
125 #define MTS64_CMD_PROBE 0x8f /* Used in probing procedure */
126 #define MTS64_CMD_SMPTE_SET_TIME 0xe8
127 #define MTS64_CMD_SMPTE_SET_FPS 0xee
128 #define MTS64_CMD_SMPTE_STOP 0xef
129 #define MTS64_CMD_SMPTE_FPS_24 0xe3
130 #define MTS64_CMD_SMPTE_FPS_25 0xe2
131 #define MTS64_CMD_SMPTE_FPS_2997 0xe4
132 #define MTS64_CMD_SMPTE_FPS_30D 0xe1
133 #define MTS64_CMD_SMPTE_FPS_30 0xe0
134 #define MTS64_CMD_COM_OPEN 0xf8 /* setting the communication mode */
135 #define MTS64_CMD_COM_CLOSE1 0xff /* clearing communication mode */
136 #define MTS64_CMD_COM_CLOSE2 0xf5
137
138 /*********************************************************************
139 * Hardware specific functions
140 *********************************************************************/
141 static void mts64_enable_readout(struct parport *p);
142 static void mts64_disable_readout(struct parport *p);
143 static int mts64_device_ready(struct parport *p);
144 static int mts64_device_init(struct parport *p);
145 static int mts64_device_open(struct mts64 *mts);
146 static int mts64_device_close(struct mts64 *mts);
147 static u8 mts64_map_midi_input(u8 c);
148 static int mts64_probe(struct parport *p);
149 static u16 mts64_read(struct parport *p);
150 static u8 mts64_read_char(struct parport *p);
151 static void mts64_smpte_start(struct parport *p,
152 u8 hours, u8 minutes,
153 u8 seconds, u8 frames,
154 u8 idx);
155 static void mts64_smpte_stop(struct parport *p);
156 static void mts64_write_command(struct parport *p, u8 c);
157 static void mts64_write_data(struct parport *p, u8 c);
158 static void mts64_write_midi(struct mts64 *mts, u8 c, int midiport);
159
160
161 /* Enables the readout procedure
162 *
163 * Before we can read a midi byte from the device, we have to set
164 * bit 3 of control port.
165 */
166 static void mts64_enable_readout(struct parport *p)
167 {
168 u8 c;
169
170 c = parport_read_control(p);
171 c |= MTS64_CTL_READOUT;
172 parport_write_control(p, c);
173 }
174
175 /* Disables readout
176 *
177 * Readout is disabled by clearing bit 3 of control
178 */
179 static void mts64_disable_readout(struct parport *p)
180 {
181 u8 c;
182
183 c = parport_read_control(p);
184 c &= ~MTS64_CTL_READOUT;
185 parport_write_control(p, c);
186 }
187
188 /* waits for device ready
189 *
190 * Checks if BUSY (Bit 7 of status) is clear
191 * 1 device ready
192 * 0 failure
193 */
194 static int mts64_device_ready(struct parport *p)
195 {
196 int i;
197 u8 c;
198
199 for (i = 0; i < 0xffff; ++i) {
200 c = parport_read_status(p);
201 c &= MTS64_STAT_BSY;
202 if (c != 0)
203 return 1;
204 }
205
206 return 0;
207 }
208
209 /* Init device (LED blinking startup magic)
210 *
211 * Returns:
212 * 0 init ok
213 * -EIO failure
214 */
215 static int mts64_device_init(struct parport *p)
216 {
217 int i;
218
219 mts64_write_command(p, MTS64_CMD_RESET);
220
221 for (i = 0; i < 64; ++i) {
222 msleep(100);
223
224 if (mts64_probe(p) == 0) {
225 /* success */
226 mts64_disable_readout(p);
227 return 0;
228 }
229 }
230 mts64_disable_readout(p);
231
232 return -EIO;
233 }
234
235 /*
236 * Opens the device (set communication mode)
237 */
238 static int mts64_device_open(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_OPEN);
245
246 return 0;
247 }
248
249 /*
250 * Close device (clear communication mode)
251 */
252 static int mts64_device_close(struct mts64 *mts)
253 {
254 int i;
255 struct parport *p = mts->pardev->port;
256
257 for (i = 0; i < 5; ++i) {
258 mts64_write_command(p, MTS64_CMD_COM_CLOSE1);
259 mts64_write_command(p, MTS64_CMD_COM_CLOSE2);
260 }
261
262 return 0;
263 }
264
265 /* map hardware port to substream number
266 *
267 * When reading a byte from the device, the device tells us
268 * on what port the byte is. This HW port has to be mapped to
269 * the midiport (substream number).
270 * substream 0-3 are Midiports 1-4
271 * substream 4 is SMPTE Timecode
272 * The mapping is done by the table:
273 * HW | 0 | 1 | 2 | 3 | 4
274 * SW | 0 | 1 | 4 | 2 | 3
275 */
276 static u8 mts64_map_midi_input(u8 c)
277 {
278 static u8 map[] = { 0, 1, 4, 2, 3 };
279
280 return map[c];
281 }
282
283
284 /* Probe parport for device
285 *
286 * Do we have a Miditerminal 4140 on parport?
287 * Returns:
288 * 0 device found
289 * -ENODEV no device
290 */
291 static int mts64_probe(struct parport *p)
292 {
293 u8 c;
294
295 mts64_smpte_stop(p);
296 mts64_write_command(p, MTS64_CMD_PROBE);
297
298 msleep(50);
299
300 c = mts64_read(p);
301
302 c &= 0x00ff;
303 if (c != MTS64_CMD_PROBE)
304 return -ENODEV;
305 else
306 return 0;
307
308 }
309
310 /* Read byte incl. status from device
311 *
312 * Returns:
313 * data in lower 8 bits and status in upper 8 bits
314 */
315 static u16 mts64_read(struct parport *p)
316 {
317 u8 data, status;
318
319 mts64_device_ready(p);
320 mts64_enable_readout(p);
321 status = parport_read_status(p);
322 data = mts64_read_char(p);
323 mts64_disable_readout(p);
324
325 return (status << 8) | data;
326 }
327
328 /* Read a byte from device
329 *
330 * Note, that readout mode has to be enabled.
331 * readout procedure is as follows:
332 * - Write number of the Bit to read to DATA
333 * - Read STATUS
334 * - Bit 5 of STATUS indicates if Bit is set
335 *
336 * Returns:
337 * Byte read from device
338 */
339 static u8 mts64_read_char(struct parport *p)
340 {
341 u8 c = 0;
342 u8 status;
343 u8 i;
344
345 for (i = 0; i < 8; ++i) {
346 parport_write_data(p, i);
347 c >>= 1;
348 status = parport_read_status(p);
349 if (status & MTS64_STAT_BIT_SET)
350 c |= 0x80;
351 }
352
353 return c;
354 }
355
356 /* Starts SMPTE Timecode generation
357 *
358 * The device creates SMPTE Timecode by hardware.
359 * 0 24 fps
360 * 1 25 fps
361 * 2 29.97 fps
362 * 3 30 fps (Drop-frame)
363 * 4 30 fps
364 */
365 static void mts64_smpte_start(struct parport *p,
366 u8 hours, u8 minutes,
367 u8 seconds, u8 frames,
368 u8 idx)
369 {
370 static u8 fps[5] = { MTS64_CMD_SMPTE_FPS_24,
371 MTS64_CMD_SMPTE_FPS_25,
372 MTS64_CMD_SMPTE_FPS_2997,
373 MTS64_CMD_SMPTE_FPS_30D,
374 MTS64_CMD_SMPTE_FPS_30 };
375
376 mts64_write_command(p, MTS64_CMD_SMPTE_SET_TIME);
377 mts64_write_command(p, frames);
378 mts64_write_command(p, seconds);
379 mts64_write_command(p, minutes);
380 mts64_write_command(p, hours);
381
382 mts64_write_command(p, MTS64_CMD_SMPTE_SET_FPS);
383 mts64_write_command(p, fps[idx]);
384 }
385
386 /* Stops SMPTE Timecode generation
387 */
388 static void mts64_smpte_stop(struct parport *p)
389 {
390 mts64_write_command(p, MTS64_CMD_SMPTE_STOP);
391 }
392
393 /* Write a command byte to device
394 */
395 static void mts64_write_command(struct parport *p, u8 c)
396 {
397 mts64_device_ready(p);
398
399 parport_write_data(p, c);
400
401 parport_write_control(p, MTS64_CTL_WRITE_CMD);
402 parport_write_control(p, MTS64_CTL_WRITE_CMD | MTS64_CTL_STROBE);
403 parport_write_control(p, MTS64_CTL_WRITE_CMD);
404 }
405
406 /* Write a data byte to device
407 */
408 static void mts64_write_data(struct parport *p, u8 c)
409 {
410 mts64_device_ready(p);
411
412 parport_write_data(p, c);
413
414 parport_write_control(p, MTS64_CTL_WRITE_DATA);
415 parport_write_control(p, MTS64_CTL_WRITE_DATA | MTS64_CTL_STROBE);
416 parport_write_control(p, MTS64_CTL_WRITE_DATA);
417 }
418
419 /* Write a MIDI byte to midiport
420 *
421 * midiport ranges from 0-3 and maps to Ports 1-4
422 * assumptions: communication mode is on
423 */
424 static void mts64_write_midi(struct mts64 *mts, u8 c,
425 int midiport)
426 {
427 struct parport *p = mts->pardev->port;
428
429 /* check current midiport */
430 if (mts->current_midi_output_port != midiport)
431 mts64_write_command(p, midiport);
432
433 /* write midi byte */
434 mts64_write_data(p, c);
435 }
436
437 /*********************************************************************
438 * Control elements
439 *********************************************************************/
440
441 /* SMPTE Switch */
442 #define snd_mts64_ctl_smpte_switch_info snd_ctl_boolean_mono_info
443
444 static int snd_mts64_ctl_smpte_switch_get(struct snd_kcontrol* kctl,
445 struct snd_ctl_elem_value *uctl)
446 {
447 struct mts64 *mts = snd_kcontrol_chip(kctl);
448
449 spin_lock_irq(&mts->lock);
450 uctl->value.integer.value[0] = mts->smpte_switch;
451 spin_unlock_irq(&mts->lock);
452
453 return 0;
454 }
455
456 /* smpte_switch is not accessed from IRQ handler, so we just need
457 to protect the HW access */
458 static int snd_mts64_ctl_smpte_switch_put(struct snd_kcontrol* kctl,
459 struct snd_ctl_elem_value *uctl)
460 {
461 struct mts64 *mts = snd_kcontrol_chip(kctl);
462 int changed = 0;
463 int val = !!uctl->value.integer.value[0];
464
465 spin_lock_irq(&mts->lock);
466 if (mts->smpte_switch == val)
467 goto __out;
468
469 changed = 1;
470 mts->smpte_switch = val;
471 if (mts->smpte_switch) {
472 mts64_smpte_start(mts->pardev->port,
473 mts->time[0], mts->time[1],
474 mts->time[2], mts->time[3],
475 mts->fps);
476 } else {
477 mts64_smpte_stop(mts->pardev->port);
478 }
479 __out:
480 spin_unlock_irq(&mts->lock);
481 return changed;
482 }
483
484 static struct snd_kcontrol_new mts64_ctl_smpte_switch = {
485 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
486 .name = "SMPTE Playback Switch",
487 .index = 0,
488 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
489 .private_value = 0,
490 .info = snd_mts64_ctl_smpte_switch_info,
491 .get = snd_mts64_ctl_smpte_switch_get,
492 .put = snd_mts64_ctl_smpte_switch_put
493 };
494
495 /* Time */
496 static int snd_mts64_ctl_smpte_time_h_info(struct snd_kcontrol *kctl,
497 struct snd_ctl_elem_info *uinfo)
498 {
499 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
500 uinfo->count = 1;
501 uinfo->value.integer.min = 0;
502 uinfo->value.integer.max = 23;
503 return 0;
504 }
505
506 static int snd_mts64_ctl_smpte_time_f_info(struct snd_kcontrol *kctl,
507 struct snd_ctl_elem_info *uinfo)
508 {
509 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
510 uinfo->count = 1;
511 uinfo->value.integer.min = 0;
512 uinfo->value.integer.max = 99;
513 return 0;
514 }
515
516 static int snd_mts64_ctl_smpte_time_info(struct snd_kcontrol *kctl,
517 struct snd_ctl_elem_info *uinfo)
518 {
519 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
520 uinfo->count = 1;
521 uinfo->value.integer.min = 0;
522 uinfo->value.integer.max = 59;
523 return 0;
524 }
525
526 static int snd_mts64_ctl_smpte_time_get(struct snd_kcontrol *kctl,
527 struct snd_ctl_elem_value *uctl)
528 {
529 struct mts64 *mts = snd_kcontrol_chip(kctl);
530 int idx = kctl->private_value;
531
532 spin_lock_irq(&mts->lock);
533 uctl->value.integer.value[0] = mts->time[idx];
534 spin_unlock_irq(&mts->lock);
535
536 return 0;
537 }
538
539 static int snd_mts64_ctl_smpte_time_put(struct snd_kcontrol *kctl,
540 struct snd_ctl_elem_value *uctl)
541 {
542 struct mts64 *mts = snd_kcontrol_chip(kctl);
543 int idx = kctl->private_value;
544 unsigned int time = uctl->value.integer.value[0] % 60;
545 int changed = 0;
546
547 spin_lock_irq(&mts->lock);
548 if (mts->time[idx] != time) {
549 changed = 1;
550 mts->time[idx] = time;
551 }
552 spin_unlock_irq(&mts->lock);
553
554 return changed;
555 }
556
557 static struct snd_kcontrol_new mts64_ctl_smpte_time_hours = {
558 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
559 .name = "SMPTE Time Hours",
560 .index = 0,
561 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
562 .private_value = 0,
563 .info = snd_mts64_ctl_smpte_time_h_info,
564 .get = snd_mts64_ctl_smpte_time_get,
565 .put = snd_mts64_ctl_smpte_time_put
566 };
567
568 static struct snd_kcontrol_new mts64_ctl_smpte_time_minutes = {
569 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
570 .name = "SMPTE Time Minutes",
571 .index = 0,
572 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
573 .private_value = 1,
574 .info = snd_mts64_ctl_smpte_time_info,
575 .get = snd_mts64_ctl_smpte_time_get,
576 .put = snd_mts64_ctl_smpte_time_put
577 };
578
579 static struct snd_kcontrol_new mts64_ctl_smpte_time_seconds = {
580 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
581 .name = "SMPTE Time Seconds",
582 .index = 0,
583 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
584 .private_value = 2,
585 .info = snd_mts64_ctl_smpte_time_info,
586 .get = snd_mts64_ctl_smpte_time_get,
587 .put = snd_mts64_ctl_smpte_time_put
588 };
589
590 static struct snd_kcontrol_new mts64_ctl_smpte_time_frames = {
591 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
592 .name = "SMPTE Time Frames",
593 .index = 0,
594 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
595 .private_value = 3,
596 .info = snd_mts64_ctl_smpte_time_f_info,
597 .get = snd_mts64_ctl_smpte_time_get,
598 .put = snd_mts64_ctl_smpte_time_put
599 };
600
601 /* FPS */
602 static int snd_mts64_ctl_smpte_fps_info(struct snd_kcontrol *kctl,
603 struct snd_ctl_elem_info *uinfo)
604 {
605 static const char * const texts[5] = {
606 "24", "25", "29.97", "30D", "30"
607 };
608
609 return snd_ctl_enum_info(uinfo, 1, 5, texts);
610 }
611
612 static int snd_mts64_ctl_smpte_fps_get(struct snd_kcontrol *kctl,
613 struct snd_ctl_elem_value *uctl)
614 {
615 struct mts64 *mts = snd_kcontrol_chip(kctl);
616
617 spin_lock_irq(&mts->lock);
618 uctl->value.enumerated.item[0] = mts->fps;
619 spin_unlock_irq(&mts->lock);
620
621 return 0;
622 }
623
624 static int snd_mts64_ctl_smpte_fps_put(struct snd_kcontrol *kctl,
625 struct snd_ctl_elem_value *uctl)
626 {
627 struct mts64 *mts = snd_kcontrol_chip(kctl);
628 int changed = 0;
629
630 if (uctl->value.enumerated.item[0] >= 5)
631 return -EINVAL;
632 spin_lock_irq(&mts->lock);
633 if (mts->fps != uctl->value.enumerated.item[0]) {
634 changed = 1;
635 mts->fps = uctl->value.enumerated.item[0];
636 }
637 spin_unlock_irq(&mts->lock);
638
639 return changed;
640 }
641
642 static struct snd_kcontrol_new mts64_ctl_smpte_fps = {
643 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
644 .name = "SMPTE Fps",
645 .index = 0,
646 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
647 .private_value = 0,
648 .info = snd_mts64_ctl_smpte_fps_info,
649 .get = snd_mts64_ctl_smpte_fps_get,
650 .put = snd_mts64_ctl_smpte_fps_put
651 };
652
653
654 static int snd_mts64_ctl_create(struct snd_card *card,
655 struct mts64 *mts)
656 {
657 int err, i;
658 static struct snd_kcontrol_new *control[] = {
659 &mts64_ctl_smpte_switch,
660 &mts64_ctl_smpte_time_hours,
661 &mts64_ctl_smpte_time_minutes,
662 &mts64_ctl_smpte_time_seconds,
663 &mts64_ctl_smpte_time_frames,
664 &mts64_ctl_smpte_fps,
665 NULL };
666
667 for (i = 0; control[i]; ++i) {
668 err = snd_ctl_add(card, snd_ctl_new1(control[i], mts));
669 if (err < 0) {
670 snd_printd("Cannot create control: %s\n",
671 control[i]->name);
672 return err;
673 }
674 }
675
676 return 0;
677 }
678
679 /*********************************************************************
680 * Rawmidi
681 *********************************************************************/
682 #define MTS64_MODE_INPUT_TRIGGERED 0x01
683
684 static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream)
685 {
686 struct mts64 *mts = substream->rmidi->private_data;
687
688 if (mts->open_count == 0) {
689 /* We don't need a spinlock here, because this is just called
690 if the device has not been opened before.
691 So there aren't any IRQs from the device */
692 mts64_device_open(mts);
693
694 msleep(50);
695 }
696 ++(mts->open_count);
697
698 return 0;
699 }
700
701 static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream)
702 {
703 struct mts64 *mts = substream->rmidi->private_data;
704 unsigned long flags;
705
706 --(mts->open_count);
707 if (mts->open_count == 0) {
708 /* We need the spinlock_irqsave here because we can still
709 have IRQs at this point */
710 spin_lock_irqsave(&mts->lock, flags);
711 mts64_device_close(mts);
712 spin_unlock_irqrestore(&mts->lock, flags);
713
714 msleep(500);
715
716 } else if (mts->open_count < 0)
717 mts->open_count = 0;
718
719 return 0;
720 }
721
722 static void snd_mts64_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,
723 int up)
724 {
725 struct mts64 *mts = substream->rmidi->private_data;
726 u8 data;
727 unsigned long flags;
728
729 spin_lock_irqsave(&mts->lock, flags);
730 while (snd_rawmidi_transmit_peek(substream, &data, 1) == 1) {
731 mts64_write_midi(mts, data, substream->number+1);
732 snd_rawmidi_transmit_ack(substream, 1);
733 }
734 spin_unlock_irqrestore(&mts->lock, flags);
735 }
736
737 static void snd_mts64_rawmidi_input_trigger(struct snd_rawmidi_substream *substream,
738 int up)
739 {
740 struct mts64 *mts = substream->rmidi->private_data;
741 unsigned long flags;
742
743 spin_lock_irqsave(&mts->lock, flags);
744 if (up)
745 mts->mode[substream->number] |= MTS64_MODE_INPUT_TRIGGERED;
746 else
747 mts->mode[substream->number] &= ~MTS64_MODE_INPUT_TRIGGERED;
748
749 spin_unlock_irqrestore(&mts->lock, flags);
750 }
751
752 static struct snd_rawmidi_ops snd_mts64_rawmidi_output_ops = {
753 .open = snd_mts64_rawmidi_open,
754 .close = snd_mts64_rawmidi_close,
755 .trigger = snd_mts64_rawmidi_output_trigger
756 };
757
758 static struct snd_rawmidi_ops snd_mts64_rawmidi_input_ops = {
759 .open = snd_mts64_rawmidi_open,
760 .close = snd_mts64_rawmidi_close,
761 .trigger = snd_mts64_rawmidi_input_trigger
762 };
763
764 /* Create and initialize the rawmidi component */
765 static int snd_mts64_rawmidi_create(struct snd_card *card)
766 {
767 struct mts64 *mts = card->private_data;
768 struct snd_rawmidi *rmidi;
769 struct snd_rawmidi_substream *substream;
770 struct list_head *list;
771 int err;
772
773 err = snd_rawmidi_new(card, CARD_NAME, 0,
774 MTS64_NUM_OUTPUT_PORTS,
775 MTS64_NUM_INPUT_PORTS,
776 &rmidi);
777 if (err < 0)
778 return err;
779
780 rmidi->private_data = mts;
781 strcpy(rmidi->name, CARD_NAME);
782 rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
783 SNDRV_RAWMIDI_INFO_INPUT |
784 SNDRV_RAWMIDI_INFO_DUPLEX;
785
786 mts->rmidi = rmidi;
787
788 /* register rawmidi ops */
789 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
790 &snd_mts64_rawmidi_output_ops);
791 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
792 &snd_mts64_rawmidi_input_ops);
793
794 /* name substreams */
795 /* output */
796 list_for_each(list,
797 &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
798 substream = list_entry(list, struct snd_rawmidi_substream, list);
799 sprintf(substream->name,
800 "Miditerminal %d", substream->number+1);
801 }
802 /* input */
803 list_for_each(list,
804 &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
805 substream = list_entry(list, struct snd_rawmidi_substream, list);
806 mts->midi_input_substream[substream->number] = substream;
807 switch(substream->number) {
808 case MTS64_SMPTE_SUBSTREAM:
809 strcpy(substream->name, "Miditerminal SMPTE");
810 break;
811 default:
812 sprintf(substream->name,
813 "Miditerminal %d", substream->number+1);
814 }
815 }
816
817 /* controls */
818 err = snd_mts64_ctl_create(card, mts);
819
820 return err;
821 }
822
823 /*********************************************************************
824 * parport stuff
825 *********************************************************************/
826 static void snd_mts64_interrupt(void *private)
827 {
828 struct mts64 *mts = ((struct snd_card*)private)->private_data;
829 u16 ret;
830 u8 status, data;
831 struct snd_rawmidi_substream *substream;
832
833 spin_lock(&mts->lock);
834 ret = mts64_read(mts->pardev->port);
835 data = ret & 0x00ff;
836 status = ret >> 8;
837
838 if (status & MTS64_STAT_PORT) {
839 mts->current_midi_input_port = mts64_map_midi_input(data);
840 } else {
841 if (mts->current_midi_input_port == -1)
842 goto __out;
843 substream = mts->midi_input_substream[mts->current_midi_input_port];
844 if (mts->mode[substream->number] & MTS64_MODE_INPUT_TRIGGERED)
845 snd_rawmidi_receive(substream, &data, 1);
846 }
847 __out:
848 spin_unlock(&mts->lock);
849 }
850
851 static void snd_mts64_attach(struct parport *p)
852 {
853 struct platform_device *device;
854
855 device = platform_device_alloc(PLATFORM_DRIVER, device_count);
856 if (!device)
857 return;
858
859 /* Temporary assignment to forward the parport */
860 platform_set_drvdata(device, p);
861
862 if (platform_device_add(device) < 0) {
863 platform_device_put(device);
864 return;
865 }
866
867 /* Since we dont get the return value of probe
868 * We need to check if device probing succeeded or not */
869 if (!platform_get_drvdata(device)) {
870 platform_device_unregister(device);
871 return;
872 }
873
874 /* register device in global table */
875 platform_devices[device_count] = device;
876 device_count++;
877 }
878
879 static void snd_mts64_detach(struct parport *p)
880 {
881 /* nothing to do here */
882 }
883
884 static int snd_mts64_dev_probe(struct pardevice *pardev)
885 {
886 if (strcmp(pardev->name, DRIVER_NAME))
887 return -ENODEV;
888
889 return 0;
890 }
891
892 static struct parport_driver mts64_parport_driver = {
893 .name = "mts64",
894 .probe = snd_mts64_dev_probe,
895 .match_port = snd_mts64_attach,
896 .detach = snd_mts64_detach,
897 .devmodel = true,
898 };
899
900 /*********************************************************************
901 * platform stuff
902 *********************************************************************/
903 static void snd_mts64_card_private_free(struct snd_card *card)
904 {
905 struct mts64 *mts = card->private_data;
906 struct pardevice *pardev = mts->pardev;
907
908 if (pardev) {
909 parport_release(pardev);
910 parport_unregister_device(pardev);
911 }
912
913 snd_mts64_free(mts);
914 }
915
916 static int snd_mts64_probe(struct platform_device *pdev)
917 {
918 struct pardevice *pardev;
919 struct parport *p;
920 int dev = pdev->id;
921 struct snd_card *card = NULL;
922 struct mts64 *mts = NULL;
923 int err;
924 struct pardev_cb mts64_cb = {
925 .preempt = NULL,
926 .wakeup = NULL,
927 .irq_func = snd_mts64_interrupt, /* ISR */
928 .flags = PARPORT_DEV_EXCL, /* flags */
929 };
930
931 p = platform_get_drvdata(pdev);
932 platform_set_drvdata(pdev, NULL);
933
934 if (dev >= SNDRV_CARDS)
935 return -ENODEV;
936 if (!enable[dev])
937 return -ENOENT;
938
939 err = snd_card_new(&pdev->dev, index[dev], id[dev], THIS_MODULE,
940 0, &card);
941 if (err < 0) {
942 snd_printd("Cannot create card\n");
943 return err;
944 }
945 strcpy(card->driver, DRIVER_NAME);
946 strcpy(card->shortname, "ESI " CARD_NAME);
947 sprintf(card->longname, "%s at 0x%lx, irq %i",
948 card->shortname, p->base, p->irq);
949
950 mts64_cb.private = card; /* private */
951 pardev = parport_register_dev_model(p, /* port */
952 DRIVER_NAME, /* name */
953 &mts64_cb, /* callbacks */
954 pdev->id); /* device number */
955 if (!pardev) {
956 snd_printd("Cannot register pardevice\n");
957 err = -EIO;
958 goto __err;
959 }
960
961 /* claim parport */
962 if (parport_claim(pardev)) {
963 snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base);
964 err = -EIO;
965 goto free_pardev;
966 }
967
968 if ((err = snd_mts64_create(card, pardev, &mts)) < 0) {
969 snd_printd("Cannot create main component\n");
970 goto release_pardev;
971 }
972 card->private_data = mts;
973 card->private_free = snd_mts64_card_private_free;
974
975 err = mts64_probe(p);
976 if (err) {
977 err = -EIO;
978 goto __err;
979 }
980
981 if ((err = snd_mts64_rawmidi_create(card)) < 0) {
982 snd_printd("Creating Rawmidi component failed\n");
983 goto __err;
984 }
985
986 /* init device */
987 if ((err = mts64_device_init(p)) < 0)
988 goto __err;
989
990 platform_set_drvdata(pdev, card);
991
992 /* At this point card will be usable */
993 if ((err = snd_card_register(card)) < 0) {
994 snd_printd("Cannot register card\n");
995 goto __err;
996 }
997
998 snd_printk(KERN_INFO "ESI Miditerminal 4140 on 0x%lx\n", p->base);
999 return 0;
1000
1001 release_pardev:
1002 parport_release(pardev);
1003 free_pardev:
1004 parport_unregister_device(pardev);
1005 __err:
1006 snd_card_free(card);
1007 return err;
1008 }
1009
1010 static int snd_mts64_remove(struct platform_device *pdev)
1011 {
1012 struct snd_card *card = platform_get_drvdata(pdev);
1013
1014 if (card)
1015 snd_card_free(card);
1016
1017 return 0;
1018 }
1019
1020 static struct platform_driver snd_mts64_driver = {
1021 .probe = snd_mts64_probe,
1022 .remove = snd_mts64_remove,
1023 .driver = {
1024 .name = PLATFORM_DRIVER,
1025 }
1026 };
1027
1028 /*********************************************************************
1029 * module init stuff
1030 *********************************************************************/
1031 static void snd_mts64_unregister_all(void)
1032 {
1033 int i;
1034
1035 for (i = 0; i < SNDRV_CARDS; ++i) {
1036 if (platform_devices[i]) {
1037 platform_device_unregister(platform_devices[i]);
1038 platform_devices[i] = NULL;
1039 }
1040 }
1041 platform_driver_unregister(&snd_mts64_driver);
1042 parport_unregister_driver(&mts64_parport_driver);
1043 }
1044
1045 static int __init snd_mts64_module_init(void)
1046 {
1047 int err;
1048
1049 if ((err = platform_driver_register(&snd_mts64_driver)) < 0)
1050 return err;
1051
1052 if (parport_register_driver(&mts64_parport_driver) != 0) {
1053 platform_driver_unregister(&snd_mts64_driver);
1054 return -EIO;
1055 }
1056
1057 if (device_count == 0) {
1058 snd_mts64_unregister_all();
1059 return -ENODEV;
1060 }
1061
1062 return 0;
1063 }
1064
1065 static void __exit snd_mts64_module_exit(void)
1066 {
1067 snd_mts64_unregister_all();
1068 }
1069
1070 module_init(snd_mts64_module_init);
1071 module_exit(snd_mts64_module_exit);
Linux with added FPC-III support