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Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi...
[linux-2.6-block.git] / sound / drivers / mts64.c
CommitLineData
68ab801e
MK		 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
68ab801e
MK		 21#include <linux/init.h>
22#include <linux/platform_device.h>
23#include <linux/parport.h>
24#include <linux/spinlock.h>
da155d5b 25#include <linux/module.h>
68ab801e 26#include <linux/delay.h>
5a0e3ad6 27#include <linux/slab.h>
68ab801e
MK		 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
37static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
38static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
a67ff6a5 39static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
68ab801e
MK		 40
41static struct platform_device *platform_devices[SNDRV_CARDS];
42static int device_count;
43
44module_param_array(index, int, NULL, S_IRUGO);
45MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
46module_param_array(id, charp, NULL, S_IRUGO);
47MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
48module_param_array(enable, bool, NULL, S_IRUGO);
49MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
50
51MODULE_AUTHOR("Matthias Koenig <mk@phasorlab.de>");
52MODULE_DESCRIPTION("ESI Miditerminal 4140");
53MODULE_LICENSE("GPL");
54MODULE_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
63struct mts64 {
64 spinlock_t lock;
65 struct snd_card *card;
66 struct snd_rawmidi *rmidi;
67 struct pardevice *pardev;
68 int pardev_claimed;
69
70 int open_count;
71 int current_midi_output_port;
72 int current_midi_input_port;
73 u8 mode[MTS64_NUM_INPUT_PORTS];
74 struct snd_rawmidi_substream *midi_input_substream[MTS64_NUM_INPUT_PORTS];
75 int smpte_switch;
76 u8 time[4]; /* [0]=hh, [1]=mm, [2]=ss, [3]=ff */
77 u8 fps;
78};
79
80static int snd_mts64_free(struct mts64 *mts)
81{
82 kfree(mts);
83 return 0;
84}
85
fbbb01a1
BP		 86static int snd_mts64_create(struct snd_card *card,
87 struct pardevice *pardev,
88 struct mts64 **rchip)
68ab801e
MK		 89{
90 struct mts64 *mts;
91
92 *rchip = NULL;
93
94 mts = kzalloc(sizeof(struct mts64), GFP_KERNEL);
95 if (mts == NULL)
96 return -ENOMEM;
97
98 /* Init chip specific data */
99 spin_lock_init(&mts->lock);
100 mts->card = card;
101 mts->pardev = pardev;
102 mts->current_midi_output_port = -1;
103 mts->current_midi_input_port = -1;
104
105 *rchip = mts;
106
107 return 0;
108}
109
110/*********************************************************************
111 * HW register related constants
112 *********************************************************************/
113
114/* Status Bits */
115#define MTS64_STAT_BSY 0x80
116#define MTS64_STAT_BIT_SET 0x20 /* readout process, bit is set */
117#define MTS64_STAT_PORT 0x10 /* read byte is a port number */
118
119/* Control Bits */
120#define MTS64_CTL_READOUT 0x08 /* enable readout */
121#define MTS64_CTL_WRITE_CMD 0x06
122#define MTS64_CTL_WRITE_DATA 0x02
123#define MTS64_CTL_STROBE 0x01
124
125/* Command */
126#define MTS64_CMD_RESET 0xfe
127#define MTS64_CMD_PROBE 0x8f /* Used in probing procedure */
128#define MTS64_CMD_SMPTE_SET_TIME 0xe8
129#define MTS64_CMD_SMPTE_SET_FPS 0xee
130#define MTS64_CMD_SMPTE_STOP 0xef
131#define MTS64_CMD_SMPTE_FPS_24 0xe3
132#define MTS64_CMD_SMPTE_FPS_25 0xe2
133#define MTS64_CMD_SMPTE_FPS_2997 0xe4
134#define MTS64_CMD_SMPTE_FPS_30D 0xe1
135#define MTS64_CMD_SMPTE_FPS_30 0xe0
136#define MTS64_CMD_COM_OPEN 0xf8 /* setting the communication mode */
137#define MTS64_CMD_COM_CLOSE1 0xff /* clearing communication mode */
138#define MTS64_CMD_COM_CLOSE2 0xf5
139
140/*********************************************************************
141 * Hardware specific functions
142 *********************************************************************/
143static void mts64_enable_readout(struct parport *p);
144static void mts64_disable_readout(struct parport *p);
145static int mts64_device_ready(struct parport *p);
146static int mts64_device_init(struct parport *p);
147static int mts64_device_open(struct mts64 *mts);
148static int mts64_device_close(struct mts64 *mts);
149static u8 mts64_map_midi_input(u8 c);
150static int mts64_probe(struct parport *p);
151static u16 mts64_read(struct parport *p);
152static u8 mts64_read_char(struct parport *p);
153static void mts64_smpte_start(struct parport *p,
154 u8 hours, u8 minutes,
155 u8 seconds, u8 frames,
156 u8 idx);
157static void mts64_smpte_stop(struct parport *p);
158static void mts64_write_command(struct parport *p, u8 c);
159static void mts64_write_data(struct parport *p, u8 c);
160static void mts64_write_midi(struct mts64 *mts, u8 c, int midiport);
161
162
163/* Enables the readout procedure
164 *
165 * Before we can read a midi byte from the device, we have to set
166 * bit 3 of control port.
167 */
168static void mts64_enable_readout(struct parport *p)
169{
170 u8 c;
171
172 c = parport_read_control(p);
173 c |= MTS64_CTL_READOUT;
174 parport_write_control(p, c);
175}
176
177/* Disables readout
178 *
179 * Readout is disabled by clearing bit 3 of control
180 */
181static void mts64_disable_readout(struct parport *p)
182{
183 u8 c;
184
185 c = parport_read_control(p);
186 c &= ~MTS64_CTL_READOUT;
187 parport_write_control(p, c);
188}
189
190/* waits for device ready
191 *
192 * Checks if BUSY (Bit 7 of status) is clear
193 * 1 device ready
194 * 0 failure
195 */
196static int mts64_device_ready(struct parport *p)
197{
198 int i;
199 u8 c;
200
201 for (i = 0; i < 0xffff; ++i) {
202 c = parport_read_status(p);
203 c &= MTS64_STAT_BSY;
204 if (c != 0)
205 return 1;
206 }
207
208 return 0;
209}
210
211/* Init device (LED blinking startup magic)
212 *
213 * Returns:
214 * 0 init ok
215 * -EIO failure
216 */
fbbb01a1 217static int mts64_device_init(struct parport *p)
68ab801e
MK		 218{
219 int i;
220
221 mts64_write_command(p, MTS64_CMD_RESET);
222
223 for (i = 0; i < 64; ++i) {
224 msleep(100);
225
226 if (mts64_probe(p) == 0) {
227 /* success */
228 mts64_disable_readout(p);
229 return 0;
230 }
231 }
232 mts64_disable_readout(p);
233
234 return -EIO;
235}
236
237/*
238 * Opens the device (set communication mode)
239 */
240static int mts64_device_open(struct mts64 *mts)
241{
242 int i;
243 struct parport *p = mts->pardev->port;
244
245 for (i = 0; i < 5; ++i)
246 mts64_write_command(p, MTS64_CMD_COM_OPEN);
247
248 return 0;
249}
250
251/*
252 * Close device (clear communication mode)
253 */
254static int mts64_device_close(struct mts64 *mts)
255{
256 int i;
257 struct parport *p = mts->pardev->port;
258
259 for (i = 0; i < 5; ++i) {
260 mts64_write_command(p, MTS64_CMD_COM_CLOSE1);
261 mts64_write_command(p, MTS64_CMD_COM_CLOSE2);
262 }
263
264 return 0;
265}
266
267/* map hardware port to substream number
268 *
269 * When reading a byte from the device, the device tells us
270 * on what port the byte is. This HW port has to be mapped to
271 * the midiport (substream number).
272 * substream 0-3 are Midiports 1-4
273 * substream 4 is SMPTE Timecode
274 * The mapping is done by the table:
275 * HW | 0 | 1 | 2 | 3 | 4
276 * SW | 0 | 1 | 4 | 2 | 3
277 */
278static u8 mts64_map_midi_input(u8 c)
279{
280 static u8 map[] = { 0, 1, 4, 2, 3 };
281
282 return map[c];
283}
284
285
286/* Probe parport for device
287 *
288 * Do we have a Miditerminal 4140 on parport?
289 * Returns:
290 * 0 device found
291 * -ENODEV no device
292 */
fbbb01a1 293static int mts64_probe(struct parport *p)
68ab801e
MK		 294{
295 u8 c;
296
297 mts64_smpte_stop(p);
298 mts64_write_command(p, MTS64_CMD_PROBE);
299
300 msleep(50);
301
302 c = mts64_read(p);
303
304 c &= 0x00ff;
305 if (c != MTS64_CMD_PROBE)
306 return -ENODEV;
307 else
308 return 0;
309
310}
311
312/* Read byte incl. status from device
313 *
314 * Returns:
315 * data in lower 8 bits and status in upper 8 bits
316 */
317static u16 mts64_read(struct parport *p)
318{
319 u8 data, status;
320
321 mts64_device_ready(p);
322 mts64_enable_readout(p);
323 status = parport_read_status(p);
324 data = mts64_read_char(p);
325 mts64_disable_readout(p);
326
327 return (status << 8) | data;
328}
329
330/* Read a byte from device
331 *
332 * Note, that readout mode has to be enabled.
333 * readout procedure is as follows:
334 * - Write number of the Bit to read to DATA
335 * - Read STATUS
336 * - Bit 5 of STATUS indicates if Bit is set
337 *
338 * Returns:
339 * Byte read from device
340 */
341static u8 mts64_read_char(struct parport *p)
342{
343 u8 c = 0;
344 u8 status;
345 u8 i;
346
347 for (i = 0; i < 8; ++i) {
348 parport_write_data(p, i);
349 c >>= 1;
350 status = parport_read_status(p);
351 if (status & MTS64_STAT_BIT_SET)
352 c |= 0x80;
353 }
354
355 return c;
356}
357
358/* Starts SMPTE Timecode generation
359 *
360 * The device creates SMPTE Timecode by hardware.
361 * 0 24 fps
362 * 1 25 fps
363 * 2 29.97 fps
364 * 3 30 fps (Drop-frame)
365 * 4 30 fps
366 */
367static void mts64_smpte_start(struct parport *p,
368 u8 hours, u8 minutes,
369 u8 seconds, u8 frames,
370 u8 idx)
371{
372 static u8 fps[5] = { MTS64_CMD_SMPTE_FPS_24,
373 MTS64_CMD_SMPTE_FPS_25,
374 MTS64_CMD_SMPTE_FPS_2997,
375 MTS64_CMD_SMPTE_FPS_30D,
376 MTS64_CMD_SMPTE_FPS_30 };
377
378 mts64_write_command(p, MTS64_CMD_SMPTE_SET_TIME);
379 mts64_write_command(p, frames);
380 mts64_write_command(p, seconds);
381 mts64_write_command(p, minutes);
382 mts64_write_command(p, hours);
383
384 mts64_write_command(p, MTS64_CMD_SMPTE_SET_FPS);
385 mts64_write_command(p, fps[idx]);
386}
387
388/* Stops SMPTE Timecode generation
389 */
390static void mts64_smpte_stop(struct parport *p)
391{
392 mts64_write_command(p, MTS64_CMD_SMPTE_STOP);
393}
394
395/* Write a command byte to device
396 */
397static void mts64_write_command(struct parport *p, u8 c)
398{
399 mts64_device_ready(p);
400
401 parport_write_data(p, c);
402
403 parport_write_control(p, MTS64_CTL_WRITE_CMD);
404 parport_write_control(p, MTS64_CTL_WRITE_CMD | MTS64_CTL_STROBE);
405 parport_write_control(p, MTS64_CTL_WRITE_CMD);
406}
407
408/* Write a data byte to device
409 */
410static void mts64_write_data(struct parport *p, u8 c)
411{
412 mts64_device_ready(p);
413
414 parport_write_data(p, c);
415
416 parport_write_control(p, MTS64_CTL_WRITE_DATA);
417 parport_write_control(p, MTS64_CTL_WRITE_DATA | MTS64_CTL_STROBE);
418 parport_write_control(p, MTS64_CTL_WRITE_DATA);
419}
420
421/* Write a MIDI byte to midiport
422 *
423 * midiport ranges from 0-3 and maps to Ports 1-4
424 * assumptions: communication mode is on
425 */
426static void mts64_write_midi(struct mts64 *mts, u8 c,
427 int midiport)
428{
429 struct parport *p = mts->pardev->port;
430
431 /* check current midiport */
432 if (mts->current_midi_output_port != midiport)
433 mts64_write_command(p, midiport);
434
435 /* write midi byte */
436 mts64_write_data(p, c);
437}
438
439/*********************************************************************
440 * Control elements
441 *********************************************************************/
442
443/* SMPTE Switch */
a5ce8890 444#define snd_mts64_ctl_smpte_switch_info snd_ctl_boolean_mono_info
68ab801e
MK		 445
446static int snd_mts64_ctl_smpte_switch_get(struct snd_kcontrol* kctl,
447 struct snd_ctl_elem_value *uctl)
448{
449 struct mts64 *mts = snd_kcontrol_chip(kctl);
450
451 spin_lock_irq(&mts->lock);
452 uctl->value.integer.value[0] = mts->smpte_switch;
453 spin_unlock_irq(&mts->lock);
454
455 return 0;
456}
457
458/* smpte_switch is not accessed from IRQ handler, so we just need
459 to protect the HW access */
460static int snd_mts64_ctl_smpte_switch_put(struct snd_kcontrol* kctl,
461 struct snd_ctl_elem_value *uctl)
462{
463 struct mts64 *mts = snd_kcontrol_chip(kctl);
464 int changed = 0;
3b892467 465 int val = !!uctl->value.integer.value[0];
68ab801e
MK		 466
467 spin_lock_irq(&mts->lock);
3b892467 468 if (mts->smpte_switch == val)
68ab801e
MK		 469 goto __out;
470
471 changed = 1;
3b892467 472 mts->smpte_switch = val;
68ab801e
MK		 473 if (mts->smpte_switch) {
474 mts64_smpte_start(mts->pardev->port,
475 mts->time[0], mts->time[1],
476 mts->time[2], mts->time[3],
477 mts->fps);
478 } else {
479 mts64_smpte_stop(mts->pardev->port);
480 }
481__out:
482 spin_unlock_irq(&mts->lock);
483 return changed;
484}
485
fbbb01a1 486static struct snd_kcontrol_new mts64_ctl_smpte_switch = {
68ab801e
MK		 487 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
488 .name = "SMPTE Playback Switch",
489 .index = 0,
490 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
491 .private_value = 0,
492 .info = snd_mts64_ctl_smpte_switch_info,
493 .get = snd_mts64_ctl_smpte_switch_get,
494 .put = snd_mts64_ctl_smpte_switch_put
495};
496
497/* Time */
498static int snd_mts64_ctl_smpte_time_h_info(struct snd_kcontrol *kctl,
499 struct snd_ctl_elem_info *uinfo)
500{
501 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
502 uinfo->count = 1;
503 uinfo->value.integer.min = 0;
504 uinfo->value.integer.max = 23;
505 return 0;
506}
507
508static int snd_mts64_ctl_smpte_time_f_info(struct snd_kcontrol *kctl,
509 struct snd_ctl_elem_info *uinfo)
510{
511 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
512 uinfo->count = 1;
513 uinfo->value.integer.min = 0;
514 uinfo->value.integer.max = 99;
515 return 0;
516}
517
518static int snd_mts64_ctl_smpte_time_info(struct snd_kcontrol *kctl,
519 struct snd_ctl_elem_info *uinfo)
520{
521 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
522 uinfo->count = 1;
523 uinfo->value.integer.min = 0;
524 uinfo->value.integer.max = 59;
525 return 0;
526}
527
528static int snd_mts64_ctl_smpte_time_get(struct snd_kcontrol *kctl,
529 struct snd_ctl_elem_value *uctl)
530{
531 struct mts64 *mts = snd_kcontrol_chip(kctl);
532 int idx = kctl->private_value;
533
534 spin_lock_irq(&mts->lock);
535 uctl->value.integer.value[0] = mts->time[idx];
536 spin_unlock_irq(&mts->lock);
537
538 return 0;
539}
540
541static int snd_mts64_ctl_smpte_time_put(struct snd_kcontrol *kctl,
542 struct snd_ctl_elem_value *uctl)
543{
544 struct mts64 *mts = snd_kcontrol_chip(kctl);
545 int idx = kctl->private_value;
3b892467 546 unsigned int time = uctl->value.integer.value[0] % 60;
68ab801e
MK		 547 int changed = 0;
548
549 spin_lock_irq(&mts->lock);
3b892467 550 if (mts->time[idx] != time) {
68ab801e 551 changed = 1;
3b892467 552 mts->time[idx] = time;
68ab801e
MK		 553 }
554 spin_unlock_irq(&mts->lock);
555
556 return changed;
557}
558
fbbb01a1 559static struct snd_kcontrol_new mts64_ctl_smpte_time_hours = {
68ab801e
MK		 560 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
561 .name = "SMPTE Time Hours",
562 .index = 0,
563 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
564 .private_value = 0,
565 .info = snd_mts64_ctl_smpte_time_h_info,
566 .get = snd_mts64_ctl_smpte_time_get,
567 .put = snd_mts64_ctl_smpte_time_put
568};
569
fbbb01a1 570static struct snd_kcontrol_new mts64_ctl_smpte_time_minutes = {
68ab801e
MK		 571 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
572 .name = "SMPTE Time Minutes",
573 .index = 0,
574 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
575 .private_value = 1,
576 .info = snd_mts64_ctl_smpte_time_info,
577 .get = snd_mts64_ctl_smpte_time_get,
578 .put = snd_mts64_ctl_smpte_time_put
579};
580
fbbb01a1 581static struct snd_kcontrol_new mts64_ctl_smpte_time_seconds = {
68ab801e
MK		 582 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
583 .name = "SMPTE Time Seconds",
584 .index = 0,
585 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
586 .private_value = 2,
587 .info = snd_mts64_ctl_smpte_time_info,
588 .get = snd_mts64_ctl_smpte_time_get,
589 .put = snd_mts64_ctl_smpte_time_put
590};
591
fbbb01a1 592static struct snd_kcontrol_new mts64_ctl_smpte_time_frames = {
68ab801e
MK		 593 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
594 .name = "SMPTE Time Frames",
595 .index = 0,
596 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
597 .private_value = 3,
598 .info = snd_mts64_ctl_smpte_time_f_info,
599 .get = snd_mts64_ctl_smpte_time_get,
600 .put = snd_mts64_ctl_smpte_time_put
601};
602
603/* FPS */
604static int snd_mts64_ctl_smpte_fps_info(struct snd_kcontrol *kctl,
605 struct snd_ctl_elem_info *uinfo)
606{
6d416f59
TI		 607 static const char * const texts[5] = {
608 "24", "25", "29.97", "30D", "30"
609 };
68ab801e 610
6d416f59 611 return snd_ctl_enum_info(uinfo, 1, 5, texts);
68ab801e
MK		 612}
613
614static int snd_mts64_ctl_smpte_fps_get(struct snd_kcontrol *kctl,
615 struct snd_ctl_elem_value *uctl)
616{
617 struct mts64 *mts = snd_kcontrol_chip(kctl);
618
619 spin_lock_irq(&mts->lock);
620 uctl->value.enumerated.item[0] = mts->fps;
621 spin_unlock_irq(&mts->lock);
622
623 return 0;
624}
625
626static int snd_mts64_ctl_smpte_fps_put(struct snd_kcontrol *kctl,
627 struct snd_ctl_elem_value *uctl)
628{
629 struct mts64 *mts = snd_kcontrol_chip(kctl);
630 int changed = 0;
631
3b892467
TI		 632 if (uctl->value.enumerated.item[0] >= 5)
633 return -EINVAL;
68ab801e
MK		 634 spin_lock_irq(&mts->lock);
635 if (mts->fps != uctl->value.enumerated.item[0]) {
636 changed = 1;
637 mts->fps = uctl->value.enumerated.item[0];
638 }
639 spin_unlock_irq(&mts->lock);
640
641 return changed;
642}
643
fbbb01a1 644static struct snd_kcontrol_new mts64_ctl_smpte_fps = {
68ab801e
MK		 645 .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
646 .name = "SMPTE Fps",
647 .index = 0,
648 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
649 .private_value = 0,
650 .info = snd_mts64_ctl_smpte_fps_info,
651 .get = snd_mts64_ctl_smpte_fps_get,
652 .put = snd_mts64_ctl_smpte_fps_put
653};
654
655
fbbb01a1
BP		 656static int snd_mts64_ctl_create(struct snd_card *card,
657 struct mts64 *mts)
68ab801e
MK		 658{
659 int err, i;
fbbb01a1 660 static struct snd_kcontrol_new *control[] = {
68ab801e
MK		 661 &mts64_ctl_smpte_switch,
662 &mts64_ctl_smpte_time_hours,
663 &mts64_ctl_smpte_time_minutes,
664 &mts64_ctl_smpte_time_seconds,
665 &mts64_ctl_smpte_time_frames,
666 &mts64_ctl_smpte_fps,
ae97dd9a 667 NULL };
68ab801e
MK		 668
669 for (i = 0; control[i]; ++i) {
670 err = snd_ctl_add(card, snd_ctl_new1(control[i], mts));
671 if (err < 0) {
672 snd_printd("Cannot create control: %s\n",
673 control[i]->name);
674 return err;
675 }
676 }
677
678 return 0;
679}
680
681/*********************************************************************
682 * Rawmidi
683 *********************************************************************/
684#define MTS64_MODE_INPUT_TRIGGERED 0x01
685
686static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream)
687{
688 struct mts64 *mts = substream->rmidi->private_data;
689
690 if (mts->open_count == 0) {
691 /* We don't need a spinlock here, because this is just called
692 if the device has not been opened before.
693 So there aren't any IRQs from the device */
694 mts64_device_open(mts);
695
696 msleep(50);
697 }
698 ++(mts->open_count);
699
700 return 0;
701}
702
703static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream)
704{
705 struct mts64 *mts = substream->rmidi->private_data;
706 unsigned long flags;
707
708 --(mts->open_count);
709 if (mts->open_count == 0) {
710 /* We need the spinlock_irqsave here because we can still
711 have IRQs at this point */
712 spin_lock_irqsave(&mts->lock, flags);
713 mts64_device_close(mts);
714 spin_unlock_irqrestore(&mts->lock, flags);
715
716 msleep(500);
717
718 } else if (mts->open_count < 0)
719 mts->open_count = 0;
720
721 return 0;
722}
723
724static void snd_mts64_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,
725 int up)
726{
727 struct mts64 *mts = substream->rmidi->private_data;
728 u8 data;
729 unsigned long flags;
730
731 spin_lock_irqsave(&mts->lock, flags);
732 while (snd_rawmidi_transmit_peek(substream, &data, 1) == 1) {
733 mts64_write_midi(mts, data, substream->number+1);
734 snd_rawmidi_transmit_ack(substream, 1);
735 }
736 spin_unlock_irqrestore(&mts->lock, flags);
737}
738
739static void snd_mts64_rawmidi_input_trigger(struct snd_rawmidi_substream *substream,
740 int up)
741{
742 struct mts64 *mts = substream->rmidi->private_data;
743 unsigned long flags;
744
745 spin_lock_irqsave(&mts->lock, flags);
746 if (up)
747 mts->mode[substream->number] |= MTS64_MODE_INPUT_TRIGGERED;
748 else
749 mts->mode[substream->number] &= ~MTS64_MODE_INPUT_TRIGGERED;
750
751 spin_unlock_irqrestore(&mts->lock, flags);
752}
753
754static struct snd_rawmidi_ops snd_mts64_rawmidi_output_ops = {
755 .open = snd_mts64_rawmidi_open,
756 .close = snd_mts64_rawmidi_close,
757 .trigger = snd_mts64_rawmidi_output_trigger
758};
759
760static struct snd_rawmidi_ops snd_mts64_rawmidi_input_ops = {
761 .open = snd_mts64_rawmidi_open,
762 .close = snd_mts64_rawmidi_close,
763 .trigger = snd_mts64_rawmidi_input_trigger
764};
765
766/* Create and initialize the rawmidi component */
fbbb01a1 767static int snd_mts64_rawmidi_create(struct snd_card *card)
68ab801e
MK		 768{
769 struct mts64 *mts = card->private_data;
770 struct snd_rawmidi *rmidi;
771 struct snd_rawmidi_substream *substream;
772 struct list_head *list;
773 int err;
774
775 err = snd_rawmidi_new(card, CARD_NAME, 0,
776 MTS64_NUM_OUTPUT_PORTS,
777 MTS64_NUM_INPUT_PORTS,
778 &rmidi);
779 if (err < 0)
780 return err;
781
782 rmidi->private_data = mts;
783 strcpy(rmidi->name, CARD_NAME);
784 rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
785 SNDRV_RAWMIDI_INFO_INPUT |
786 SNDRV_RAWMIDI_INFO_DUPLEX;
787
788 mts->rmidi = rmidi;
789
790 /* register rawmidi ops */
791 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
792 &snd_mts64_rawmidi_output_ops);
793 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
794 &snd_mts64_rawmidi_input_ops);
795
796 /* name substreams */
797 /* output */
798 list_for_each(list,
799 &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
800 substream = list_entry(list, struct snd_rawmidi_substream, list);
801 sprintf(substream->name,
802 "Miditerminal %d", substream->number+1);
803 }
804 /* input */
805 list_for_each(list,
806 &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
807 substream = list_entry(list, struct snd_rawmidi_substream, list);
808 mts->midi_input_substream[substream->number] = substream;
809 switch(substream->number) {
810 case MTS64_SMPTE_SUBSTREAM:
811 strcpy(substream->name, "Miditerminal SMPTE");
812 break;
813 default:
814 sprintf(substream->name,
815 "Miditerminal %d", substream->number+1);
816 }
817 }
818
819 /* controls */
820 err = snd_mts64_ctl_create(card, mts);
821
822 return err;
823}
824
825/*********************************************************************
826 * parport stuff
827 *********************************************************************/
5712cb3d 828static void snd_mts64_interrupt(void *private)
68ab801e
MK		 829{
830 struct mts64 *mts = ((struct snd_card*)private)->private_data;
831 u16 ret;
832 u8 status, data;
833 struct snd_rawmidi_substream *substream;
834
835 spin_lock(&mts->lock);
836 ret = mts64_read(mts->pardev->port);
837 data = ret & 0x00ff;
838 status = ret >> 8;
839
840 if (status & MTS64_STAT_PORT) {
841 mts->current_midi_input_port = mts64_map_midi_input(data);
842 } else {
843 if (mts->current_midi_input_port == -1)
844 goto __out;
845 substream = mts->midi_input_substream[mts->current_midi_input_port];
846 if (mts->mode[substream->number] & MTS64_MODE_INPUT_TRIGGERED)
847 snd_rawmidi_receive(substream, &data, 1);
848 }
849__out:
850 spin_unlock(&mts->lock);
851}
852
fbbb01a1 853static int snd_mts64_probe_port(struct parport *p)
68ab801e
MK		 854{
855 struct pardevice *pardev;
856 int res;
857
858 pardev = parport_register_device(p, DRIVER_NAME,
859 NULL, NULL, NULL,
860 0, NULL);
861 if (!pardev)
862 return -EIO;
863
864 if (parport_claim(pardev)) {
865 parport_unregister_device(pardev);
866 return -EIO;
867 }
868
869 res = mts64_probe(p);
870
871 parport_release(pardev);
872 parport_unregister_device(pardev);
873
874 return res;
875}
876
fbbb01a1 877static void snd_mts64_attach(struct parport *p)
68ab801e
MK		 878{
879 struct platform_device *device;
880
881 device = platform_device_alloc(PLATFORM_DRIVER, device_count);
479ef436 882 if (!device)
68ab801e
MK		 883 return;
884
885 /* Temporary assignment to forward the parport */
886 platform_set_drvdata(device, p);
887
479ef436 888 if (platform_device_add(device) < 0) {
68ab801e
MK		 889 platform_device_put(device);
890 return;
891 }
892
893 /* Since we dont get the return value of probe
894 * We need to check if device probing succeeded or not */
895 if (!platform_get_drvdata(device)) {
896 platform_device_unregister(device);
897 return;
898 }
899
900 /* register device in global table */
901 platform_devices[device_count] = device;
902 device_count++;
903}
904
905static void snd_mts64_detach(struct parport *p)
906{
907 /* nothing to do here */
908}
909
910static struct parport_driver mts64_parport_driver = {
911 .name = "mts64",
912 .attach = snd_mts64_attach,
913 .detach = snd_mts64_detach
914};
915
916/*********************************************************************
917 * platform stuff
918 *********************************************************************/
919static void snd_mts64_card_private_free(struct snd_card *card)
920{
921 struct mts64 *mts = card->private_data;
922 struct pardevice *pardev = mts->pardev;
923
924 if (pardev) {
925 if (mts->pardev_claimed)
926 parport_release(pardev);
927 parport_unregister_device(pardev);
928 }
929
930 snd_mts64_free(mts);
931}
932
fbbb01a1 933static int snd_mts64_probe(struct platform_device *pdev)
68ab801e
MK		 934{
935 struct pardevice *pardev;
936 struct parport *p;
937 int dev = pdev->id;
938 struct snd_card *card = NULL;
939 struct mts64 *mts = NULL;
940 int err;
941
942 p = platform_get_drvdata(pdev);
943 platform_set_drvdata(pdev, NULL);
944
945 if (dev >= SNDRV_CARDS)
946 return -ENODEV;
947 if (!enable[dev])
948 return -ENOENT;
949 if ((err = snd_mts64_probe_port(p)) < 0)
950 return err;
951
5872f3f6
TI		 952 err = snd_card_new(&pdev->dev, index[dev], id[dev], THIS_MODULE,
953 0, &card);
bd7dd77c 954 if (err < 0) {
68ab801e 955 snd_printd("Cannot create card\n");
bd7dd77c 956 return err;
68ab801e
MK		 957 }
958 strcpy(card->driver, DRIVER_NAME);
959 strcpy(card->shortname, "ESI " CARD_NAME);
960 sprintf(card->longname, "%s at 0x%lx, irq %i",
961 card->shortname, p->base, p->irq);
962
963 pardev = parport_register_device(p, /* port */
964 DRIVER_NAME, /* name */
965 NULL, /* preempt */
966 NULL, /* wakeup */
967 snd_mts64_interrupt, /* ISR */
968 PARPORT_DEV_EXCL, /* flags */
969 (void *)card); /* private */
970 if (pardev == NULL) {
971 snd_printd("Cannot register pardevice\n");
972 err = -EIO;
973 goto __err;
974 }
975
976 if ((err = snd_mts64_create(card, pardev, &mts)) < 0) {
977 snd_printd("Cannot create main component\n");
978 parport_unregister_device(pardev);
979 goto __err;
980 }
981 card->private_data = mts;
982 card->private_free = snd_mts64_card_private_free;
983
984 if ((err = snd_mts64_rawmidi_create(card)) < 0) {
985 snd_printd("Creating Rawmidi component failed\n");
986 goto __err;
987 }
988
989 /* claim parport */
990 if (parport_claim(pardev)) {
991 snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base);
992 err = -EIO;
993 goto __err;
994 }
995 mts->pardev_claimed = 1;
996
997 /* init device */
998 if ((err = mts64_device_init(p)) < 0)
999 goto __err;
1000
1001 platform_set_drvdata(pdev, card);
1002
1003 /* At this point card will be usable */
1004 if ((err = snd_card_register(card)) < 0) {
1005 snd_printd("Cannot register card\n");
1006 goto __err;
1007 }
1008
45203832 1009 snd_printk(KERN_INFO "ESI Miditerminal 4140 on 0x%lx\n", p->base);
68ab801e
MK		 1010 return 0;
1011
1012__err:
1013 snd_card_free(card);
1014 return err;
1015}
1016
fbbb01a1 1017static int snd_mts64_remove(struct platform_device *pdev)
68ab801e
MK		 1018{
1019 struct snd_card *card = platform_get_drvdata(pdev);
1020
1021 if (card)
1022 snd_card_free(card);
1023
1024 return 0;
1025}
1026
1027
1028static struct platform_driver snd_mts64_driver = {
1029 .probe = snd_mts64_probe,
fbbb01a1 1030 .remove = snd_mts64_remove,
68ab801e 1031 .driver = {
8bf01d8a 1032 .name = PLATFORM_DRIVER,
68ab801e
MK		 1033 }
1034};
1035
1036/*********************************************************************
1037 * module init stuff
1038 *********************************************************************/
10c86be5 1039static void snd_mts64_unregister_all(void)
68ab801e
MK		 1040{
1041 int i;
1042
1043 for (i = 0; i < SNDRV_CARDS; ++i) {
1044 if (platform_devices[i]) {
1045 platform_device_unregister(platform_devices[i]);
1046 platform_devices[i] = NULL;
1047 }
1048 }
1049 platform_driver_unregister(&snd_mts64_driver);
1050 parport_unregister_driver(&mts64_parport_driver);
1051}
1052
1053static int __init snd_mts64_module_init(void)
1054{
1055 int err;
1056
1057 if ((err = platform_driver_register(&snd_mts64_driver)) < 0)
1058 return err;
1059
1060 if (parport_register_driver(&mts64_parport_driver) != 0) {
1061 platform_driver_unregister(&snd_mts64_driver);
1062 return -EIO;
1063 }
1064
1065 if (device_count == 0) {
1066 snd_mts64_unregister_all();
1067 return -ENODEV;
1068 }
1069
1070 return 0;
1071}
1072
1073static void __exit snd_mts64_module_exit(void)
1074{
1075 snd_mts64_unregister_all();
1076}
1077
1078module_init(snd_mts64_module_init);
1079module_exit(snd_mts64_module_exit);
Linux 6.x block layer and io_uring tree(s)