Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/sound/drivers/mts64.c

  1 /*     
  2  *   ALSA Driver for Ego Systems Inc. (ESI) Miditerminal 4140
  3  *   Copyright (c) 2006 by Matthias K├Ânig <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 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 
 80 static int snd_mts64_free(struct mts64 *mts)
 81 {
 82         kfree(mts);
 83         return 0;
 84 }
 85 
 86 static int snd_mts64_create(struct snd_card *card,
 87                             struct pardevice *pardev,
 88                             struct mts64 **rchip)
 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  *********************************************************************/
143 static void mts64_enable_readout(struct parport *p);
144 static void mts64_disable_readout(struct parport *p);
145 static int mts64_device_ready(struct parport *p);
146 static int mts64_device_init(struct parport *p);
147 static int mts64_device_open(struct mts64 *mts);
148 static int mts64_device_close(struct mts64 *mts);
149 static u8 mts64_map_midi_input(u8 c);
150 static int mts64_probe(struct parport *p);
151 static u16 mts64_read(struct parport *p);
152 static u8 mts64_read_char(struct parport *p);
153 static void mts64_smpte_start(struct parport *p,
154                               u8 hours, u8 minutes,
155                               u8 seconds, u8 frames,
156                               u8 idx);
157 static void mts64_smpte_stop(struct parport *p);
158 static void mts64_write_command(struct parport *p, u8 c);
159 static void mts64_write_data(struct parport *p, u8 c);
160 static 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  */
168 static 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  */
181 static 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  */
196 static 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  */
217 static int mts64_device_init(struct parport *p)
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  */
240 static 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  */
254 static 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  */
278 static 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  */
293 static int mts64_probe(struct parport *p)
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  */
317 static 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  */
341 static 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  */
367 static 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  */
390 static 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  */
397 static 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  */
410 static 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  */
426 static 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 */
444 #define snd_mts64_ctl_smpte_switch_info         snd_ctl_boolean_mono_info
445 
446 static 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 */
460 static 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;
465         int val = !!uctl->value.integer.value[0];
466 
467         spin_lock_irq(&mts->lock);
468         if (mts->smpte_switch == val)
469                 goto __out;
470 
471         changed = 1;
472         mts->smpte_switch = val;
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 
486 static struct snd_kcontrol_new mts64_ctl_smpte_switch = {
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 */
498 static 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 
508 static 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 
518 static 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 
528 static 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 
541 static 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;
546         unsigned int time = uctl->value.integer.value[0] % 60;
547         int changed = 0;
548 
549         spin_lock_irq(&mts->lock);
550         if (mts->time[idx] != time) {
551                 changed = 1;
552                 mts->time[idx] = time;
553         }
554         spin_unlock_irq(&mts->lock);
555 
556         return changed;
557 }
558 
559 static struct snd_kcontrol_new mts64_ctl_smpte_time_hours = {
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 
570 static struct snd_kcontrol_new mts64_ctl_smpte_time_minutes = {
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 
581 static struct snd_kcontrol_new mts64_ctl_smpte_time_seconds = {
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 
592 static struct snd_kcontrol_new mts64_ctl_smpte_time_frames = {
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 */
604 static int snd_mts64_ctl_smpte_fps_info(struct snd_kcontrol *kctl,
605                                         struct snd_ctl_elem_info *uinfo)
606 {
607         static char *texts[5] = { "24",
608                                   "25",
609                                   "29.97",
610                                   "30D",
611                                   "30"    };
612 
613         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
614         uinfo->count = 1;
615         uinfo->value.enumerated.items = 5;
616         if (uinfo->value.enumerated.item > 4)
617                 uinfo->value.enumerated.item = 4;
618         strcpy(uinfo->value.enumerated.name,
619                texts[uinfo->value.enumerated.item]);
620         
621         return 0;
622 }
623 
624 static int snd_mts64_ctl_smpte_fps_get(struct snd_kcontrol *kctl,
625                                        struct snd_ctl_elem_value *uctl)
626 {
627         struct mts64 *mts = snd_kcontrol_chip(kctl);
628 
629         spin_lock_irq(&mts->lock);
630         uctl->value.enumerated.item[0] = mts->fps;
631         spin_unlock_irq(&mts->lock);
632 
633         return 0;
634 }
635 
636 static int snd_mts64_ctl_smpte_fps_put(struct snd_kcontrol *kctl,
637                                        struct snd_ctl_elem_value *uctl)
638 {
639         struct mts64 *mts = snd_kcontrol_chip(kctl);
640         int changed = 0;
641 
642         if (uctl->value.enumerated.item[0] >= 5)
643                 return -EINVAL;
644         spin_lock_irq(&mts->lock);
645         if (mts->fps != uctl->value.enumerated.item[0]) {
646                 changed = 1;
647                 mts->fps = uctl->value.enumerated.item[0];
648         }
649         spin_unlock_irq(&mts->lock);
650 
651         return changed;
652 }
653 
654 static struct snd_kcontrol_new mts64_ctl_smpte_fps = {
655         .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
656         .name  = "SMPTE Fps",
657         .index = 0,
658         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
659         .private_value = 0,
660         .info  = snd_mts64_ctl_smpte_fps_info,
661         .get   = snd_mts64_ctl_smpte_fps_get,
662         .put   = snd_mts64_ctl_smpte_fps_put
663 };
664 
665 
666 static int snd_mts64_ctl_create(struct snd_card *card,
667                                 struct mts64 *mts)
668 {
669         int err, i;
670         static struct snd_kcontrol_new *control[] = {
671                 &mts64_ctl_smpte_switch,
672                 &mts64_ctl_smpte_time_hours,
673                 &mts64_ctl_smpte_time_minutes,
674                 &mts64_ctl_smpte_time_seconds,
675                 &mts64_ctl_smpte_time_frames,
676                 &mts64_ctl_smpte_fps,
677                 NULL  };
678 
679         for (i = 0; control[i]; ++i) {
680                 err = snd_ctl_add(card, snd_ctl_new1(control[i], mts));
681                 if (err < 0) {
682                         snd_printd("Cannot create control: %s\n", 
683                                    control[i]->name);
684                         return err;
685                 }
686         }
687 
688         return 0;
689 }
690 
691 /*********************************************************************
692  * Rawmidi
693  *********************************************************************/
694 #define MTS64_MODE_INPUT_TRIGGERED 0x01
695 
696 static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream)
697 {
698         struct mts64 *mts = substream->rmidi->private_data;
699 
700         if (mts->open_count == 0) {
701                 /* We don't need a spinlock here, because this is just called 
702                    if the device has not been opened before. 
703                    So there aren't any IRQs from the device */
704                 mts64_device_open(mts);
705 
706                 msleep(50);
707         }
708         ++(mts->open_count);
709 
710         return 0;
711 }
712 
713 static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream)
714 {
715         struct mts64 *mts = substream->rmidi->private_data;
716         unsigned long flags;
717 
718         --(mts->open_count);
719         if (mts->open_count == 0) {
720                 /* We need the spinlock_irqsave here because we can still
721                    have IRQs at this point */
722                 spin_lock_irqsave(&mts->lock, flags);
723                 mts64_device_close(mts);
724                 spin_unlock_irqrestore(&mts->lock, flags);
725 
726                 msleep(500);
727 
728         } else if (mts->open_count < 0)
729                 mts->open_count = 0;
730 
731         return 0;
732 }
733 
734 static void snd_mts64_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,
735                                              int up)
736 {
737         struct mts64 *mts = substream->rmidi->private_data;
738         u8 data;
739         unsigned long flags;
740 
741         spin_lock_irqsave(&mts->lock, flags);
742         while (snd_rawmidi_transmit_peek(substream, &data, 1) == 1) {
743                 mts64_write_midi(mts, data, substream->number+1);
744                 snd_rawmidi_transmit_ack(substream, 1);
745         }
746         spin_unlock_irqrestore(&mts->lock, flags);
747 }
748 
749 static void snd_mts64_rawmidi_input_trigger(struct snd_rawmidi_substream *substream,
750                                             int up)
751 {
752         struct mts64 *mts = substream->rmidi->private_data;
753         unsigned long flags;
754 
755         spin_lock_irqsave(&mts->lock, flags);
756         if (up)
757                 mts->mode[substream->number] |= MTS64_MODE_INPUT_TRIGGERED;
758         else
759                 mts->mode[substream->number] &= ~MTS64_MODE_INPUT_TRIGGERED;
760         
761         spin_unlock_irqrestore(&mts->lock, flags);
762 }
763 
764 static struct snd_rawmidi_ops snd_mts64_rawmidi_output_ops = {
765         .open    = snd_mts64_rawmidi_open,
766         .close   = snd_mts64_rawmidi_close,
767         .trigger = snd_mts64_rawmidi_output_trigger
768 };
769 
770 static struct snd_rawmidi_ops snd_mts64_rawmidi_input_ops = {
771         .open    = snd_mts64_rawmidi_open,
772         .close   = snd_mts64_rawmidi_close,
773         .trigger = snd_mts64_rawmidi_input_trigger
774 };
775 
776 /* Create and initialize the rawmidi component */
777 static int snd_mts64_rawmidi_create(struct snd_card *card)
778 {
779         struct mts64 *mts = card->private_data;
780         struct snd_rawmidi *rmidi;
781         struct snd_rawmidi_substream *substream;
782         struct list_head *list;
783         int err;
784         
785         err = snd_rawmidi_new(card, CARD_NAME, 0, 
786                               MTS64_NUM_OUTPUT_PORTS, 
787                               MTS64_NUM_INPUT_PORTS, 
788                               &rmidi);
789         if (err < 0) 
790                 return err;
791 
792         rmidi->private_data = mts;
793         strcpy(rmidi->name, CARD_NAME);
794         rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
795                             SNDRV_RAWMIDI_INFO_INPUT |
796                             SNDRV_RAWMIDI_INFO_DUPLEX;
797 
798         mts->rmidi = rmidi;
799 
800         /* register rawmidi ops */
801         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, 
802                             &snd_mts64_rawmidi_output_ops);
803         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, 
804                             &snd_mts64_rawmidi_input_ops);
805 
806         /* name substreams */
807         /* output */
808         list_for_each(list, 
809                       &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
810                 substream = list_entry(list, struct snd_rawmidi_substream, list);
811                 sprintf(substream->name,
812                         "Miditerminal %d", substream->number+1);
813         }
814         /* input */
815         list_for_each(list, 
816                       &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
817                 substream = list_entry(list, struct snd_rawmidi_substream, list);
818                 mts->midi_input_substream[substream->number] = substream;
819                 switch(substream->number) {
820                 case MTS64_SMPTE_SUBSTREAM:
821                         strcpy(substream->name, "Miditerminal SMPTE");
822                         break;
823                 default:
824                         sprintf(substream->name,
825                                 "Miditerminal %d", substream->number+1);
826                 }
827         }
828 
829         /* controls */
830         err = snd_mts64_ctl_create(card, mts);
831 
832         return err;
833 }
834 
835 /*********************************************************************
836  * parport stuff
837  *********************************************************************/
838 static void snd_mts64_interrupt(void *private)
839 {
840         struct mts64 *mts = ((struct snd_card*)private)->private_data;
841         u16 ret;
842         u8 status, data;
843         struct snd_rawmidi_substream *substream;
844 
845         spin_lock(&mts->lock);
846         ret = mts64_read(mts->pardev->port);
847         data = ret & 0x00ff;
848         status = ret >> 8;
849 
850         if (status & MTS64_STAT_PORT) {
851                 mts->current_midi_input_port = mts64_map_midi_input(data);
852         } else {
853                 if (mts->current_midi_input_port == -1) 
854                         goto __out;
855                 substream = mts->midi_input_substream[mts->current_midi_input_port];
856                 if (mts->mode[substream->number] & MTS64_MODE_INPUT_TRIGGERED)
857                         snd_rawmidi_receive(substream, &data, 1);
858         }
859 __out:
860         spin_unlock(&mts->lock);
861 }
862 
863 static int snd_mts64_probe_port(struct parport *p)
864 {
865         struct pardevice *pardev;
866         int res;
867 
868         pardev = parport_register_device(p, DRIVER_NAME,
869                                          NULL, NULL, NULL,
870                                          0, NULL);
871         if (!pardev)
872                 return -EIO;
873         
874         if (parport_claim(pardev)) {
875                 parport_unregister_device(pardev);
876                 return -EIO;
877         }
878 
879         res = mts64_probe(p);
880 
881         parport_release(pardev);
882         parport_unregister_device(pardev);
883 
884         return res;
885 }
886 
887 static void snd_mts64_attach(struct parport *p)
888 {
889         struct platform_device *device;
890 
891         device = platform_device_alloc(PLATFORM_DRIVER, device_count);
892         if (!device)
893                 return;
894 
895         /* Temporary assignment to forward the parport */
896         platform_set_drvdata(device, p);
897 
898         if (platform_device_add(device) < 0) {
899                 platform_device_put(device);
900                 return;
901         }
902 
903         /* Since we dont get the return value of probe
904          * We need to check if device probing succeeded or not */
905         if (!platform_get_drvdata(device)) {
906                 platform_device_unregister(device);
907                 return;
908         }
909 
910         /* register device in global table */
911         platform_devices[device_count] = device;
912         device_count++;
913 }
914 
915 static void snd_mts64_detach(struct parport *p)
916 {
917         /* nothing to do here */
918 }
919 
920 static struct parport_driver mts64_parport_driver = {
921         .name   = "mts64",
922         .attach = snd_mts64_attach,
923         .detach = snd_mts64_detach
924 };
925 
926 /*********************************************************************
927  * platform stuff
928  *********************************************************************/
929 static void snd_mts64_card_private_free(struct snd_card *card)
930 {
931         struct mts64 *mts = card->private_data;
932         struct pardevice *pardev = mts->pardev;
933 
934         if (pardev) {
935                 if (mts->pardev_claimed)
936                         parport_release(pardev);
937                 parport_unregister_device(pardev);
938         }
939 
940         snd_mts64_free(mts);
941 }
942 
943 static int snd_mts64_probe(struct platform_device *pdev)
944 {
945         struct pardevice *pardev;
946         struct parport *p;
947         int dev = pdev->id;
948         struct snd_card *card = NULL;
949         struct mts64 *mts = NULL;
950         int err;
951 
952         p = platform_get_drvdata(pdev);
953         platform_set_drvdata(pdev, NULL);
954 
955         if (dev >= SNDRV_CARDS)
956                 return -ENODEV;
957         if (!enable[dev]) 
958                 return -ENOENT;
959         if ((err = snd_mts64_probe_port(p)) < 0)
960                 return err;
961 
962         err = snd_card_new(&pdev->dev, index[dev], id[dev], THIS_MODULE,
963                            0, &card);
964         if (err < 0) {
965                 snd_printd("Cannot create card\n");
966                 return err;
967         }
968         strcpy(card->driver, DRIVER_NAME);
969         strcpy(card->shortname, "ESI " CARD_NAME);
970         sprintf(card->longname,  "%s at 0x%lx, irq %i", 
971                 card->shortname, p->base, p->irq);
972 
973         pardev = parport_register_device(p,                   /* port */
974                                          DRIVER_NAME,         /* name */
975                                          NULL,                /* preempt */
976                                          NULL,                /* wakeup */
977                                          snd_mts64_interrupt, /* ISR */
978                                          PARPORT_DEV_EXCL,    /* flags */
979                                          (void *)card);       /* private */
980         if (pardev == NULL) {
981                 snd_printd("Cannot register pardevice\n");
982                 err = -EIO;
983                 goto __err;
984         }
985 
986         if ((err = snd_mts64_create(card, pardev, &mts)) < 0) {
987                 snd_printd("Cannot create main component\n");
988                 parport_unregister_device(pardev);
989                 goto __err;
990         }
991         card->private_data = mts;
992         card->private_free = snd_mts64_card_private_free;
993         
994         if ((err = snd_mts64_rawmidi_create(card)) < 0) {
995                 snd_printd("Creating Rawmidi component failed\n");
996                 goto __err;
997         }
998 
999         /* claim parport */
1000         if (parport_claim(pardev)) {
1001                 snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base);
1002                 err = -EIO;
1003                 goto __err;
1004         }
1005         mts->pardev_claimed = 1;
1006 
1007         /* init device */
1008         if ((err = mts64_device_init(p)) < 0)
1009                 goto __err;
1010 
1011         platform_set_drvdata(pdev, card);
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 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 = snd_mts64_remove,
1041         .driver = {
1042                 .name = PLATFORM_DRIVER,
1043                 .owner  = THIS_MODULE,
1044         }
1045 };
1046 
1047 /*********************************************************************
1048  * module init stuff
1049  *********************************************************************/
1050 static void snd_mts64_unregister_all(void)
1051 {
1052         int i;
1053 
1054         for (i = 0; i < SNDRV_CARDS; ++i) {
1055                 if (platform_devices[i]) {
1056                         platform_device_unregister(platform_devices[i]);
1057                         platform_devices[i] = NULL;
1058                 }
1059         }               
1060         platform_driver_unregister(&snd_mts64_driver);
1061         parport_unregister_driver(&mts64_parport_driver);
1062 }
1063 
1064 static int __init snd_mts64_module_init(void)
1065 {
1066         int err;
1067 
1068         if ((err = platform_driver_register(&snd_mts64_driver)) < 0)
1069                 return err;
1070 
1071         if (parport_register_driver(&mts64_parport_driver) != 0) {
1072                 platform_driver_unregister(&snd_mts64_driver);
1073                 return -EIO;
1074         }
1075 
1076         if (device_count == 0) {
1077                 snd_mts64_unregister_all();
1078                 return -ENODEV;
1079         }
1080 
1081         return 0;
1082 }
1083 
1084 static void __exit snd_mts64_module_exit(void)
1085 {
1086         snd_mts64_unregister_all();
1087 }
1088 
1089 module_init(snd_mts64_module_init);
1090 module_exit(snd_mts64_module_exit);
1091 

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