?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
lis3: fix regression of HP DriveGuard with 8bit chip
[linux-btrfs-devel.git] / sound / drivers / mts64.c
blob8539ab0a0893db2933e39732f7073be3d2c1f166
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/delay.h>
26 #include <linux/slab.h>
27 #include <sound/core.h>
28 #include <sound/initval.h>
29 #include <sound/rawmidi.h>
30 #include <sound/control.h>
31
32 #define CARD_NAME "Miditerminal 4140"
33 #define DRIVER_NAME "MTS64"
34 #define PLATFORM_DRIVER "snd_mts64"
35
36 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
37 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
38 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
39
40 static struct platform_device *platform_devices[SNDRV_CARDS];
41 static int device_count;
42
43 module_param_array(index, int, NULL, S_IRUGO);
44 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
45 module_param_array(id, charp, NULL, S_IRUGO);
46 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
47 module_param_array(enable, bool, NULL, S_IRUGO);
48 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
49
50 MODULE_AUTHOR("Matthias Koenig <mk@phasorlab.de>");
51 MODULE_DESCRIPTION("ESI Miditerminal 4140");
52 MODULE_LICENSE("GPL");
53 MODULE_SUPPORTED_DEVICE("{{ESI,Miditerminal 4140}}");
54
55 /*********************************************************************
56 * Chip specific
57 *********************************************************************/
58 #define MTS64_NUM_INPUT_PORTS 5
59 #define MTS64_NUM_OUTPUT_PORTS 4
60 #define MTS64_SMPTE_SUBSTREAM 4
61
62 struct mts64 {
63 spinlock_t lock;
64 struct snd_card *card;
65 struct snd_rawmidi *rmidi;
66 struct pardevice *pardev;
67 int pardev_claimed;
68
69 int open_count;
70 int current_midi_output_port;
71 int current_midi_input_port;
72 u8 mode[MTS64_NUM_INPUT_PORTS];
73 struct snd_rawmidi_substream *midi_input_substream[MTS64_NUM_INPUT_PORTS];
74 int smpte_switch;
75 u8 time[4]; /* [0]=hh, [1]=mm, [2]=ss, [3]=ff */
76 u8 fps;
77 };
78
79 static int snd_mts64_free(struct mts64 *mts)
80 {
81 kfree(mts);
82 return 0;
83 }
84
85 static int __devinit snd_mts64_create(struct snd_card *card,
86 struct pardevice *pardev,
87 struct mts64 **rchip)
88 {
89 struct mts64 *mts;
90
91 *rchip = NULL;
92
93 mts = kzalloc(sizeof(struct mts64), GFP_KERNEL);
94 if (mts == NULL)
95 return -ENOMEM;
96
97 /* Init chip specific data */
98 spin_lock_init(&mts->lock);
99 mts->card = card;
100 mts->pardev = pardev;
101 mts->current_midi_output_port = -1;
102 mts->current_midi_input_port = -1;
103
104 *rchip = mts;
105
106 return 0;
107 }
108
109 /*********************************************************************
110 * HW register related constants
111 *********************************************************************/
112
113 /* Status Bits */
114 #define MTS64_STAT_BSY 0x80
115 #define MTS64_STAT_BIT_SET 0x20 /* readout process, bit is set */
116 #define MTS64_STAT_PORT 0x10 /* read byte is a port number */
117
118 /* Control Bits */
119 #define MTS64_CTL_READOUT 0x08 /* enable readout */
120 #define MTS64_CTL_WRITE_CMD 0x06
121 #define MTS64_CTL_WRITE_DATA 0x02
122 #define MTS64_CTL_STROBE 0x01
123
124 /* Command */
125 #define MTS64_CMD_RESET 0xfe
126 #define MTS64_CMD_PROBE 0x8f /* Used in probing procedure */
127 #define MTS64_CMD_SMPTE_SET_TIME 0xe8
128 #define MTS64_CMD_SMPTE_SET_FPS 0xee
129 #define MTS64_CMD_SMPTE_STOP 0xef
130 #define MTS64_CMD_SMPTE_FPS_24 0xe3
131 #define MTS64_CMD_SMPTE_FPS_25 0xe2
132 #define MTS64_CMD_SMPTE_FPS_2997 0xe4
133 #define MTS64_CMD_SMPTE_FPS_30D 0xe1
134 #define MTS64_CMD_SMPTE_FPS_30 0xe0
135 #define MTS64_CMD_COM_OPEN 0xf8 /* setting the communication mode */
136 #define MTS64_CMD_COM_CLOSE1 0xff /* clearing communication mode */
137 #define MTS64_CMD_COM_CLOSE2 0xf5
138
139 /*********************************************************************
140 * Hardware specific functions
141 *********************************************************************/
142 static void mts64_enable_readout(struct parport *p);
143 static void mts64_disable_readout(struct parport *p);
144 static int mts64_device_ready(struct parport *p);
145 static int mts64_device_init(struct parport *p);
146 static int mts64_device_open(struct mts64 *mts);
147 static int mts64_device_close(struct mts64 *mts);
148 static u8 mts64_map_midi_input(u8 c);
149 static int mts64_probe(struct parport *p);
150 static u16 mts64_read(struct parport *p);
151 static u8 mts64_read_char(struct parport *p);
152 static void mts64_smpte_start(struct parport *p,
153 u8 hours, u8 minutes,
154 u8 seconds, u8 frames,
155 u8 idx);
156 static void mts64_smpte_stop(struct parport *p);
157 static void mts64_write_command(struct parport *p, u8 c);
158 static void mts64_write_data(struct parport *p, u8 c);
159 static void mts64_write_midi(struct mts64 *mts, u8 c, int midiport);
160
161
162 /* Enables the readout procedure
163 *
164 * Before we can read a midi byte from the device, we have to set
165 * bit 3 of control port.
166 */
167 static void mts64_enable_readout(struct parport *p)
168 {
169 u8 c;
170
171 c = parport_read_control(p);
172 c |= MTS64_CTL_READOUT;
173 parport_write_control(p, c);
174 }
175
176 /* Disables readout
177 *
178 * Readout is disabled by clearing bit 3 of control
179 */
180 static void mts64_disable_readout(struct parport *p)
181 {
182 u8 c;
183
184 c = parport_read_control(p);
185 c &= ~MTS64_CTL_READOUT;
186 parport_write_control(p, c);
187 }
188
189 /* waits for device ready
190 *
191 * Checks if BUSY (Bit 7 of status) is clear
192 * 1 device ready
193 * 0 failure
194 */
195 static int mts64_device_ready(struct parport *p)
196 {
197 int i;
198 u8 c;
199
200 for (i = 0; i < 0xffff; ++i) {
201 c = parport_read_status(p);
202 c &= MTS64_STAT_BSY;
203 if (c != 0)
204 return 1;
205 }
206
207 return 0;
208 }
209
210 /* Init device (LED blinking startup magic)
211 *
212 * Returns:
213 * 0 init ok
214 * -EIO failure
215 */
216 static int __devinit mts64_device_init(struct parport *p)
217 {
218 int i;
219
220 mts64_write_command(p, MTS64_CMD_RESET);
221
222 for (i = 0; i < 64; ++i) {
223 msleep(100);
224
225 if (mts64_probe(p) == 0) {
226 /* success */
227 mts64_disable_readout(p);
228 return 0;
229 }
230 }
231 mts64_disable_readout(p);
232
233 return -EIO;
234 }
235
236 /*
237 * Opens the device (set communication mode)
238 */
239 static int mts64_device_open(struct mts64 *mts)
240 {
241 int i;
242 struct parport *p = mts->pardev->port;
243
244 for (i = 0; i < 5; ++i)
245 mts64_write_command(p, MTS64_CMD_COM_OPEN);
246
247 return 0;
248 }
249
250 /*
251 * Close device (clear communication mode)
252 */
253 static int mts64_device_close(struct mts64 *mts)
254 {
255 int i;
256 struct parport *p = mts->pardev->port;
257
258 for (i = 0; i < 5; ++i) {
259 mts64_write_command(p, MTS64_CMD_COM_CLOSE1);
260 mts64_write_command(p, MTS64_CMD_COM_CLOSE2);
261 }
262
263 return 0;
264 }
265
266 /* map hardware port to substream number
267 *
268 * When reading a byte from the device, the device tells us
269 * on what port the byte is. This HW port has to be mapped to
270 * the midiport (substream number).
271 * substream 0-3 are Midiports 1-4
272 * substream 4 is SMPTE Timecode
273 * The mapping is done by the table:
274 * HW | 0 | 1 | 2 | 3 | 4
275 * SW | 0 | 1 | 4 | 2 | 3
276 */
277 static u8 mts64_map_midi_input(u8 c)
278 {
279 static u8 map[] = { 0, 1, 4, 2, 3 };
280
281 return map[c];
282 }
283
284
285 /* Probe parport for device
286 *
287 * Do we have a Miditerminal 4140 on parport?
288 * Returns:
289 * 0 device found
290 * -ENODEV no device
291 */
292 static int __devinit mts64_probe(struct parport *p)
293 {
294 u8 c;
295
296 mts64_smpte_stop(p);
297 mts64_write_command(p, MTS64_CMD_PROBE);
298
299 msleep(50);
300
301 c = mts64_read(p);
302
303 c &= 0x00ff;
304 if (c != MTS64_CMD_PROBE)
305 return -ENODEV;
306 else
307 return 0;
308
309 }
310
311 /* Read byte incl. status from device
312 *
313 * Returns:
314 * data in lower 8 bits and status in upper 8 bits
315 */
316 static u16 mts64_read(struct parport *p)
317 {
318 u8 data, status;
319
320 mts64_device_ready(p);
321 mts64_enable_readout(p);
322 status = parport_read_status(p);
323 data = mts64_read_char(p);
324 mts64_disable_readout(p);
325
326 return (status << 8) | data;
327 }
328
329 /* Read a byte from device
330 *
331 * Note, that readout mode has to be enabled.
332 * readout procedure is as follows:
333 * - Write number of the Bit to read to DATA
334 * - Read STATUS
335 * - Bit 5 of STATUS indicates if Bit is set
336 *
337 * Returns:
338 * Byte read from device
339 */
340 static u8 mts64_read_char(struct parport *p)
341 {
342 u8 c = 0;
343 u8 status;
344 u8 i;
345
346 for (i = 0; i < 8; ++i) {
347 parport_write_data(p, i);
348 c >>= 1;
349 status = parport_read_status(p);
350 if (status & MTS64_STAT_BIT_SET)
351 c |= 0x80;
352 }
353
354 return c;
355 }
356
357 /* Starts SMPTE Timecode generation
358 *
359 * The device creates SMPTE Timecode by hardware.
360 * 0 24 fps
361 * 1 25 fps
362 * 2 29.97 fps
363 * 3 30 fps (Drop-frame)
364 * 4 30 fps
365 */
366 static void mts64_smpte_start(struct parport *p,
367 u8 hours, u8 minutes,
368 u8 seconds, u8 frames,
369 u8 idx)
370 {
371 static u8 fps[5] = { MTS64_CMD_SMPTE_FPS_24,
372 MTS64_CMD_SMPTE_FPS_25,
373 MTS64_CMD_SMPTE_FPS_2997,
374 MTS64_CMD_SMPTE_FPS_30D,
375 MTS64_CMD_SMPTE_FPS_30 };
376
377 mts64_write_command(p, MTS64_CMD_SMPTE_SET_TIME);
378 mts64_write_command(p, frames);
379 mts64_write_command(p, seconds);
380 mts64_write_command(p, minutes);
381 mts64_write_command(p, hours);
382
383 mts64_write_command(p, MTS64_CMD_SMPTE_SET_FPS);
384 mts64_write_command(p, fps[idx]);
385 }
386
387 /* Stops SMPTE Timecode generation
388 */
389 static void mts64_smpte_stop(struct parport *p)
390 {
391 mts64_write_command(p, MTS64_CMD_SMPTE_STOP);
392 }
393
394 /* Write a command byte to device
395 */
396 static void mts64_write_command(struct parport *p, u8 c)
397 {
398 mts64_device_ready(p);
399
400 parport_write_data(p, c);
401
402 parport_write_control(p, MTS64_CTL_WRITE_CMD);
403 parport_write_control(p, MTS64_CTL_WRITE_CMD | MTS64_CTL_STROBE);
404 parport_write_control(p, MTS64_CTL_WRITE_CMD);
405 }
406
407 /* Write a data byte to device
408 */
409 static void mts64_write_data(struct parport *p, u8 c)
410 {
411 mts64_device_ready(p);
412
413 parport_write_data(p, c);
414
415 parport_write_control(p, MTS64_CTL_WRITE_DATA);
416 parport_write_control(p, MTS64_CTL_WRITE_DATA | MTS64_CTL_STROBE);
417 parport_write_control(p, MTS64_CTL_WRITE_DATA);
418 }
419
420 /* Write a MIDI byte to midiport
421 *
422 * midiport ranges from 0-3 and maps to Ports 1-4
423 * assumptions: communication mode is on
424 */
425 static void mts64_write_midi(struct mts64 *mts, u8 c,
426 int midiport)
427 {
428 struct parport *p = mts->pardev->port;
429
430 /* check current midiport */
431 if (mts->current_midi_output_port != midiport)
432 mts64_write_command(p, midiport);
433
434 /* write midi byte */
435 mts64_write_data(p, c);
436 }
437
438 /*********************************************************************
439 * Control elements
440 *********************************************************************/
441
442 /* SMPTE Switch */
443 #define snd_mts64_ctl_smpte_switch_info snd_ctl_boolean_mono_info
444
445 static int snd_mts64_ctl_smpte_switch_get(struct snd_kcontrol* kctl,
446 struct snd_ctl_elem_value *uctl)
447 {
448 struct mts64 *mts = snd_kcontrol_chip(kctl);
449
450 spin_lock_irq(&mts->lock);
451 uctl->value.integer.value[0] = mts->smpte_switch;
452 spin_unlock_irq(&mts->lock);
453
454 return 0;
455 }
456
457 /* smpte_switch is not accessed from IRQ handler, so we just need
458 to protect the HW access */
459 static int snd_mts64_ctl_smpte_switch_put(struct snd_kcontrol* kctl,
460 struct snd_ctl_elem_value *uctl)
461 {
462 struct mts64 *mts = snd_kcontrol_chip(kctl);
463 int changed = 0;
464 int val = !!uctl->value.integer.value[0];
465
466 spin_lock_irq(&mts->lock);
467 if (mts->smpte_switch == val)
468 goto __out;
469
470 changed = 1;
471 mts->smpte_switch = val;
472 if (mts->smpte_switch) {
473 mts64_smpte_start(mts->pardev->port,
474 mts->time[0], mts->time[1],
475 mts->time[2], mts->time[3],
476 mts->fps);
477 } else {
478 mts64_smpte_stop(mts->pardev->port);
479 }
480 __out:
481 spin_unlock_irq(&mts->lock);
482 return changed;
483 }
484
485 static struct snd_kcontrol_new mts64_ctl_smpte_switch __devinitdata = {
486 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
487 .name = "SMPTE Playback Switch",
488 .index = 0,
489 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
490 .private_value = 0,
491 .info = snd_mts64_ctl_smpte_switch_info,
492 .get = snd_mts64_ctl_smpte_switch_get,
493 .put = snd_mts64_ctl_smpte_switch_put
494 };
495
496 /* Time */
497 static int snd_mts64_ctl_smpte_time_h_info(struct snd_kcontrol *kctl,
498 struct snd_ctl_elem_info *uinfo)
499 {
500 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
501 uinfo->count = 1;
502 uinfo->value.integer.min = 0;
503 uinfo->value.integer.max = 23;
504 return 0;
505 }
506
507 static int snd_mts64_ctl_smpte_time_f_info(struct snd_kcontrol *kctl,
508 struct snd_ctl_elem_info *uinfo)
509 {
510 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
511 uinfo->count = 1;
512 uinfo->value.integer.min = 0;
513 uinfo->value.integer.max = 99;
514 return 0;
515 }
516
517 static int snd_mts64_ctl_smpte_time_info(struct snd_kcontrol *kctl,
518 struct snd_ctl_elem_info *uinfo)
519 {
520 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
521 uinfo->count = 1;
522 uinfo->value.integer.min = 0;
523 uinfo->value.integer.max = 59;
524 return 0;
525 }
526
527 static int snd_mts64_ctl_smpte_time_get(struct snd_kcontrol *kctl,
528 struct snd_ctl_elem_value *uctl)
529 {
530 struct mts64 *mts = snd_kcontrol_chip(kctl);
531 int idx = kctl->private_value;
532
533 spin_lock_irq(&mts->lock);
534 uctl->value.integer.value[0] = mts->time[idx];
535 spin_unlock_irq(&mts->lock);
536
537 return 0;
538 }
539
540 static int snd_mts64_ctl_smpte_time_put(struct snd_kcontrol *kctl,
541 struct snd_ctl_elem_value *uctl)
542 {
543 struct mts64 *mts = snd_kcontrol_chip(kctl);
544 int idx = kctl->private_value;
545 unsigned int time = uctl->value.integer.value[0] % 60;
546 int changed = 0;
547
548 spin_lock_irq(&mts->lock);
549 if (mts->time[idx] != time) {
550 changed = 1;
551 mts->time[idx] = time;
552 }
553 spin_unlock_irq(&mts->lock);
554
555 return changed;
556 }
557
558 static struct snd_kcontrol_new mts64_ctl_smpte_time_hours __devinitdata = {
559 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
560 .name = "SMPTE Time Hours",
561 .index = 0,
562 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
563 .private_value = 0,
564 .info = snd_mts64_ctl_smpte_time_h_info,
565 .get = snd_mts64_ctl_smpte_time_get,
566 .put = snd_mts64_ctl_smpte_time_put
567 };
568
569 static struct snd_kcontrol_new mts64_ctl_smpte_time_minutes __devinitdata = {
570 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
571 .name = "SMPTE Time Minutes",
572 .index = 0,
573 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
574 .private_value = 1,
575 .info = snd_mts64_ctl_smpte_time_info,
576 .get = snd_mts64_ctl_smpte_time_get,
577 .put = snd_mts64_ctl_smpte_time_put
578 };
579
580 static struct snd_kcontrol_new mts64_ctl_smpte_time_seconds __devinitdata = {
581 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
582 .name = "SMPTE Time Seconds",
583 .index = 0,
584 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
585 .private_value = 2,
586 .info = snd_mts64_ctl_smpte_time_info,
587 .get = snd_mts64_ctl_smpte_time_get,
588 .put = snd_mts64_ctl_smpte_time_put
589 };
590
591 static struct snd_kcontrol_new mts64_ctl_smpte_time_frames __devinitdata = {
592 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
593 .name = "SMPTE Time Frames",
594 .index = 0,
595 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
596 .private_value = 3,
597 .info = snd_mts64_ctl_smpte_time_f_info,
598 .get = snd_mts64_ctl_smpte_time_get,
599 .put = snd_mts64_ctl_smpte_time_put
600 };
601
602 /* FPS */
603 static int snd_mts64_ctl_smpte_fps_info(struct snd_kcontrol *kctl,
604 struct snd_ctl_elem_info *uinfo)
605 {
606 static char *texts[5] = { "24",
607 "25",
608 "29.97",
609 "30D",
610 "30" };
611
612 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
613 uinfo->count = 1;
614 uinfo->value.enumerated.items = 5;
615 if (uinfo->value.enumerated.item > 4)
616 uinfo->value.enumerated.item = 4;
617 strcpy(uinfo->value.enumerated.name,
618 texts[uinfo->value.enumerated.item]);
619
620 return 0;
621 }
622
623 static int snd_mts64_ctl_smpte_fps_get(struct snd_kcontrol *kctl,
624 struct snd_ctl_elem_value *uctl)
625 {
626 struct mts64 *mts = snd_kcontrol_chip(kctl);
627
628 spin_lock_irq(&mts->lock);
629 uctl->value.enumerated.item[0] = mts->fps;
630 spin_unlock_irq(&mts->lock);
631
632 return 0;
633 }
634
635 static int snd_mts64_ctl_smpte_fps_put(struct snd_kcontrol *kctl,
636 struct snd_ctl_elem_value *uctl)
637 {
638 struct mts64 *mts = snd_kcontrol_chip(kctl);
639 int changed = 0;
640
641 if (uctl->value.enumerated.item[0] >= 5)
642 return -EINVAL;
643 spin_lock_irq(&mts->lock);
644 if (mts->fps != uctl->value.enumerated.item[0]) {
645 changed = 1;
646 mts->fps = uctl->value.enumerated.item[0];
647 }
648 spin_unlock_irq(&mts->lock);
649
650 return changed;
651 }
652
653 static struct snd_kcontrol_new mts64_ctl_smpte_fps __devinitdata = {
654 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
655 .name = "SMPTE Fps",
656 .index = 0,
657 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
658 .private_value = 0,
659 .info = snd_mts64_ctl_smpte_fps_info,
660 .get = snd_mts64_ctl_smpte_fps_get,
661 .put = snd_mts64_ctl_smpte_fps_put
662 };
663
664
665 static int __devinit snd_mts64_ctl_create(struct snd_card *card,
666 struct mts64 *mts)
667 {
668 int err, i;
669 static struct snd_kcontrol_new *control[] __devinitdata = {
670 &mts64_ctl_smpte_switch,
671 &mts64_ctl_smpte_time_hours,
672 &mts64_ctl_smpte_time_minutes,
673 &mts64_ctl_smpte_time_seconds,
674 &mts64_ctl_smpte_time_frames,
675 &mts64_ctl_smpte_fps,
676 NULL };
677
678 for (i = 0; control[i]; ++i) {
679 err = snd_ctl_add(card, snd_ctl_new1(control[i], mts));
680 if (err < 0) {
681 snd_printd("Cannot create control: %s\n",
682 control[i]->name);
683 return err;
684 }
685 }
686
687 return 0;
688 }
689
690 /*********************************************************************
691 * Rawmidi
692 *********************************************************************/
693 #define MTS64_MODE_INPUT_TRIGGERED 0x01
694
695 static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream)
696 {
697 struct mts64 *mts = substream->rmidi->private_data;
698
699 if (mts->open_count == 0) {
700 /* We don't need a spinlock here, because this is just called
701 if the device has not been opened before.
702 So there aren't any IRQs from the device */
703 mts64_device_open(mts);
704
705 msleep(50);
706 }
707 ++(mts->open_count);
708
709 return 0;
710 }
711
712 static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream)
713 {
714 struct mts64 *mts = substream->rmidi->private_data;
715 unsigned long flags;
716
717 --(mts->open_count);
718 if (mts->open_count == 0) {
719 /* We need the spinlock_irqsave here because we can still
720 have IRQs at this point */
721 spin_lock_irqsave(&mts->lock, flags);
722 mts64_device_close(mts);
723 spin_unlock_irqrestore(&mts->lock, flags);
724
725 msleep(500);
726
727 } else if (mts->open_count < 0)
728 mts->open_count = 0;
729
730 return 0;
731 }
732
733 static void snd_mts64_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,
734 int up)
735 {
736 struct mts64 *mts = substream->rmidi->private_data;
737 u8 data;
738 unsigned long flags;
739
740 spin_lock_irqsave(&mts->lock, flags);
741 while (snd_rawmidi_transmit_peek(substream, &data, 1) == 1) {
742 mts64_write_midi(mts, data, substream->number+1);
743 snd_rawmidi_transmit_ack(substream, 1);
744 }
745 spin_unlock_irqrestore(&mts->lock, flags);
746 }
747
748 static void snd_mts64_rawmidi_input_trigger(struct snd_rawmidi_substream *substream,
749 int up)
750 {
751 struct mts64 *mts = substream->rmidi->private_data;
752 unsigned long flags;
753
754 spin_lock_irqsave(&mts->lock, flags);
755 if (up)
756 mts->mode[substream->number] |= MTS64_MODE_INPUT_TRIGGERED;
757 else
758 mts->mode[substream->number] &= ~MTS64_MODE_INPUT_TRIGGERED;
759
760 spin_unlock_irqrestore(&mts->lock, flags);
761 }
762
763 static struct snd_rawmidi_ops snd_mts64_rawmidi_output_ops = {
764 .open = snd_mts64_rawmidi_open,
765 .close = snd_mts64_rawmidi_close,
766 .trigger = snd_mts64_rawmidi_output_trigger
767 };
768
769 static struct snd_rawmidi_ops snd_mts64_rawmidi_input_ops = {
770 .open = snd_mts64_rawmidi_open,
771 .close = snd_mts64_rawmidi_close,
772 .trigger = snd_mts64_rawmidi_input_trigger
773 };
774
775 /* Create and initialize the rawmidi component */
776 static int __devinit snd_mts64_rawmidi_create(struct snd_card *card)
777 {
778 struct mts64 *mts = card->private_data;
779 struct snd_rawmidi *rmidi;
780 struct snd_rawmidi_substream *substream;
781 struct list_head *list;
782 int err;
783
784 err = snd_rawmidi_new(card, CARD_NAME, 0,
785 MTS64_NUM_OUTPUT_PORTS,
786 MTS64_NUM_INPUT_PORTS,
787 &rmidi);
788 if (err < 0)
789 return err;
790
791 rmidi->private_data = mts;
792 strcpy(rmidi->name, CARD_NAME);
793 rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
794 SNDRV_RAWMIDI_INFO_INPUT |
795 SNDRV_RAWMIDI_INFO_DUPLEX;
796
797 mts->rmidi = rmidi;
798
799 /* register rawmidi ops */
800 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
801 &snd_mts64_rawmidi_output_ops);
802 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
803 &snd_mts64_rawmidi_input_ops);
804
805 /* name substreams */
806 /* output */
807 list_for_each(list,
808 &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
809 substream = list_entry(list, struct snd_rawmidi_substream, list);
810 sprintf(substream->name,
811 "Miditerminal %d", substream->number+1);
812 }
813 /* input */
814 list_for_each(list,
815 &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
816 substream = list_entry(list, struct snd_rawmidi_substream, list);
817 mts->midi_input_substream[substream->number] = substream;
818 switch(substream->number) {
819 case MTS64_SMPTE_SUBSTREAM:
820 strcpy(substream->name, "Miditerminal SMPTE");
821 break;
822 default:
823 sprintf(substream->name,
824 "Miditerminal %d", substream->number+1);
825 }
826 }
827
828 /* controls */
829 err = snd_mts64_ctl_create(card, mts);
830
831 return err;
832 }
833
834 /*********************************************************************
835 * parport stuff
836 *********************************************************************/
837 static void snd_mts64_interrupt(void *private)
838 {
839 struct mts64 *mts = ((struct snd_card*)private)->private_data;
840 u16 ret;
841 u8 status, data;
842 struct snd_rawmidi_substream *substream;
843
844 spin_lock(&mts->lock);
845 ret = mts64_read(mts->pardev->port);
846 data = ret & 0x00ff;
847 status = ret >> 8;
848
849 if (status & MTS64_STAT_PORT) {
850 mts->current_midi_input_port = mts64_map_midi_input(data);
851 } else {
852 if (mts->current_midi_input_port == -1)
853 goto __out;
854 substream = mts->midi_input_substream[mts->current_midi_input_port];
855 if (mts->mode[substream->number] & MTS64_MODE_INPUT_TRIGGERED)
856 snd_rawmidi_receive(substream, &data, 1);
857 }
858 __out:
859 spin_unlock(&mts->lock);
860 }
861
862 static int __devinit snd_mts64_probe_port(struct parport *p)
863 {
864 struct pardevice *pardev;
865 int res;
866
867 pardev = parport_register_device(p, DRIVER_NAME,
868 NULL, NULL, NULL,
869 0, NULL);
870 if (!pardev)
871 return -EIO;
872
873 if (parport_claim(pardev)) {
874 parport_unregister_device(pardev);
875 return -EIO;
876 }
877
878 res = mts64_probe(p);
879
880 parport_release(pardev);
881 parport_unregister_device(pardev);
882
883 return res;
884 }
885
886 static void __devinit snd_mts64_attach(struct parport *p)
887 {
888 struct platform_device *device;
889
890 device = platform_device_alloc(PLATFORM_DRIVER, device_count);
891 if (!device)
892 return;
893
894 /* Temporary assignment to forward the parport */
895 platform_set_drvdata(device, p);
896
897 if (platform_device_add(device) < 0) {
898 platform_device_put(device);
899 return;
900 }
901
902 /* Since we dont get the return value of probe
903 * We need to check if device probing succeeded or not */
904 if (!platform_get_drvdata(device)) {
905 platform_device_unregister(device);
906 return;
907 }
908
909 /* register device in global table */
910 platform_devices[device_count] = device;
911 device_count++;
912 }
913
914 static void snd_mts64_detach(struct parport *p)
915 {
916 /* nothing to do here */
917 }
918
919 static struct parport_driver mts64_parport_driver = {
920 .name = "mts64",
921 .attach = snd_mts64_attach,
922 .detach = snd_mts64_detach
923 };
924
925 /*********************************************************************
926 * platform stuff
927 *********************************************************************/
928 static void snd_mts64_card_private_free(struct snd_card *card)
929 {
930 struct mts64 *mts = card->private_data;
931 struct pardevice *pardev = mts->pardev;
932
933 if (pardev) {
934 if (mts->pardev_claimed)
935 parport_release(pardev);
936 parport_unregister_device(pardev);
937 }
938
939 snd_mts64_free(mts);
940 }
941
942 static int __devinit snd_mts64_probe(struct platform_device *pdev)
943 {
944 struct pardevice *pardev;
945 struct parport *p;
946 int dev = pdev->id;
947 struct snd_card *card = NULL;
948 struct mts64 *mts = NULL;
949 int err;
950
951 p = platform_get_drvdata(pdev);
952 platform_set_drvdata(pdev, NULL);
953
954 if (dev >= SNDRV_CARDS)
955 return -ENODEV;
956 if (!enable[dev])
957 return -ENOENT;
958 if ((err = snd_mts64_probe_port(p)) < 0)
959 return err;
960
961 err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
962 if (err < 0) {
963 snd_printd("Cannot create card\n");
964 return err;
965 }
966 strcpy(card->driver, DRIVER_NAME);
967 strcpy(card->shortname, "ESI " CARD_NAME);
968 sprintf(card->longname, "%s at 0x%lx, irq %i",
969 card->shortname, p->base, p->irq);
970
971 pardev = parport_register_device(p, /* port */
972 DRIVER_NAME, /* name */
973 NULL, /* preempt */
974 NULL, /* wakeup */
975 snd_mts64_interrupt, /* ISR */
976 PARPORT_DEV_EXCL, /* flags */
977 (void *)card); /* private */
978 if (pardev == NULL) {
979 snd_printd("Cannot register pardevice\n");
980 err = -EIO;
981 goto __err;
982 }
983
984 if ((err = snd_mts64_create(card, pardev, &mts)) < 0) {
985 snd_printd("Cannot create main component\n");
986 parport_unregister_device(pardev);
987 goto __err;
988 }
989 card->private_data = mts;
990 card->private_free = snd_mts64_card_private_free;
991
992 if ((err = snd_mts64_rawmidi_create(card)) < 0) {
993 snd_printd("Creating Rawmidi component failed\n");
994 goto __err;
995 }
996
997 /* claim parport */
998 if (parport_claim(pardev)) {
999 snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base);
1000 err = -EIO;
1001 goto __err;
1002 }
1003 mts->pardev_claimed = 1;
1004
1005 /* init device */
1006 if ((err = mts64_device_init(p)) < 0)
1007 goto __err;
1008
1009 platform_set_drvdata(pdev, card);
1010
1011 snd_card_set_dev(card, &pdev->dev);
1012
1013 /* At this point card will be usable */
1014 if ((err = snd_card_register(card)) < 0) {
1015 snd_printd("Cannot register card\n");
1016 goto __err;
1017 }
1018
1019 snd_printk(KERN_INFO "ESI Miditerminal 4140 on 0x%lx\n", p->base);
1020 return 0;
1021
1022 __err:
1023 snd_card_free(card);
1024 return err;
1025 }
1026
1027 static int __devexit snd_mts64_remove(struct platform_device *pdev)
1028 {
1029 struct snd_card *card = platform_get_drvdata(pdev);
1030
1031 if (card)
1032 snd_card_free(card);
1033
1034 return 0;
1035 }
1036
1037
1038 static struct platform_driver snd_mts64_driver = {
1039 .probe = snd_mts64_probe,
1040 .remove = __devexit_p(snd_mts64_remove),
1041 .driver = {
1042 .name = PLATFORM_DRIVER
1043 }
1044 };
1045
1046 /*********************************************************************
1047 * module init stuff
1048 *********************************************************************/
1049 static void snd_mts64_unregister_all(void)
1050 {
1051 int i;
1052
1053 for (i = 0; i < SNDRV_CARDS; ++i) {
1054 if (platform_devices[i]) {
1055 platform_device_unregister(platform_devices[i]);
1056 platform_devices[i] = NULL;
1057 }
1058 }
1059 platform_driver_unregister(&snd_mts64_driver);
1060 parport_unregister_driver(&mts64_parport_driver);
1061 }
1062
1063 static int __init snd_mts64_module_init(void)
1064 {
1065 int err;
1066
1067 if ((err = platform_driver_register(&snd_mts64_driver)) < 0)
1068 return err;
1069
1070 if (parport_register_driver(&mts64_parport_driver) != 0) {
1071 platform_driver_unregister(&snd_mts64_driver);
1072 return -EIO;
1073 }
1074
1075 if (device_count == 0) {
1076 snd_mts64_unregister_all();
1077 return -ENODEV;
1078 }
1079
1080 return 0;
1081 }
1082
1083 static void __exit snd_mts64_module_exit(void)
1084 {
1085 snd_mts64_unregister_all();
1086 }
1087
1088 module_init(snd_mts64_module_init);
1089 module_exit(snd_mts64_module_exit);
Linux Btrfs Development