Version:  2.0.40 2.2.26 2.4.37 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1

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 const char * const texts[5] = {
608                 "24", "25", "29.97", "30D", "30"
609         };
610 
611         return snd_ctl_enum_info(uinfo, 1, 5, texts);
612 }
613 
614 static 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 
626 static 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 
632         if (uctl->value.enumerated.item[0] >= 5)
633                 return -EINVAL;
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 
644 static struct snd_kcontrol_new mts64_ctl_smpte_fps = {
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 
656 static int snd_mts64_ctl_create(struct snd_card *card,
657                                 struct mts64 *mts)
658 {
659         int err, i;
660         static struct snd_kcontrol_new *control[] = {
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,
667                 NULL  };
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 
686 static 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 
703 static 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 
724 static 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 
739 static 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 
754 static 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 
760 static 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 */
767 static int snd_mts64_rawmidi_create(struct snd_card *card)
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  *********************************************************************/
828 static void snd_mts64_interrupt(void *private)
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 
853 static int snd_mts64_probe_port(struct parport *p)
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 
877 static void snd_mts64_attach(struct parport *p)
878 {
879         struct platform_device *device;
880 
881         device = platform_device_alloc(PLATFORM_DRIVER, device_count);
882         if (!device)
883                 return;
884 
885         /* Temporary assignment to forward the parport */
886         platform_set_drvdata(device, p);
887 
888         if (platform_device_add(device) < 0) {
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 
905 static void snd_mts64_detach(struct parport *p)
906 {
907         /* nothing to do here */
908 }
909 
910 static 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  *********************************************************************/
919 static 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 
933 static int snd_mts64_probe(struct platform_device *pdev)
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 
952         err = snd_card_new(&pdev->dev, index[dev], id[dev], THIS_MODULE,
953                            0, &card);
954         if (err < 0) {
955                 snd_printd("Cannot create card\n");
956                 return err;
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 
1009         snd_printk(KERN_INFO "ESI Miditerminal 4140 on 0x%lx\n", p->base);
1010         return 0;
1011 
1012 __err:
1013         snd_card_free(card);
1014         return err;
1015 }
1016 
1017 static int snd_mts64_remove(struct platform_device *pdev)
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 
1028 static struct platform_driver snd_mts64_driver = {
1029         .probe  = snd_mts64_probe,
1030         .remove = snd_mts64_remove,
1031         .driver = {
1032                 .name = PLATFORM_DRIVER,
1033         }
1034 };
1035 
1036 /*********************************************************************
1037  * module init stuff
1038  *********************************************************************/
1039 static void snd_mts64_unregister_all(void)
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 
1053 static 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 
1073 static void __exit snd_mts64_module_exit(void)
1074 {
1075         snd_mts64_unregister_all();
1076 }
1077 
1078 module_init(snd_mts64_module_init);
1079 module_exit(snd_mts64_module_exit);
1080 

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