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mixer_oss.c
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1 /*
2  * OSS emulation layer for the mixer interface
3  * Copyright (c) by Jaroslav Kysela <[email protected]>
4  *
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 
22 #include <linux/init.h>
23 #include <linux/slab.h>
24 #include <linux/time.h>
25 #include <linux/string.h>
26 #include <linux/module.h>
27 #include <sound/core.h>
28 #include <sound/minors.h>
29 #include <sound/control.h>
30 #include <sound/info.h>
31 #include <sound/mixer_oss.h>
32 #include <linux/soundcard.h>
33 
34 #define OSS_ALSAEMULVER _SIOR ('M', 249, int)
35 
36 MODULE_AUTHOR("Jaroslav Kysela <[email protected]>");
37 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
38 MODULE_LICENSE("GPL");
39 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
40 
41 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
42 {
43  struct snd_card *card;
44  struct snd_mixer_oss_file *fmixer;
45  int err;
46 
47  err = nonseekable_open(inode, file);
48  if (err < 0)
49  return err;
50 
51  card = snd_lookup_oss_minor_data(iminor(inode),
52  SNDRV_OSS_DEVICE_TYPE_MIXER);
53  if (card == NULL)
54  return -ENODEV;
55  if (card->mixer_oss == NULL) {
56  snd_card_unref(card);
57  return -ENODEV;
58  }
59  err = snd_card_file_add(card, file);
60  if (err < 0) {
61  snd_card_unref(card);
62  return err;
63  }
64  fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
65  if (fmixer == NULL) {
66  snd_card_file_remove(card, file);
67  snd_card_unref(card);
68  return -ENOMEM;
69  }
70  fmixer->card = card;
71  fmixer->mixer = card->mixer_oss;
72  file->private_data = fmixer;
73  if (!try_module_get(card->module)) {
74  kfree(fmixer);
75  snd_card_file_remove(card, file);
76  snd_card_unref(card);
77  return -EFAULT;
78  }
79  snd_card_unref(card);
80  return 0;
81 }
82 
83 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
84 {
85  struct snd_mixer_oss_file *fmixer;
86 
87  if (file->private_data) {
88  fmixer = file->private_data;
89  module_put(fmixer->card->module);
90  snd_card_file_remove(fmixer->card, file);
91  kfree(fmixer);
92  }
93  return 0;
94 }
95 
96 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
97  mixer_info __user *_info)
98 {
99  struct snd_card *card = fmixer->card;
100  struct snd_mixer_oss *mixer = fmixer->mixer;
101  struct mixer_info info;
102 
103  memset(&info, 0, sizeof(info));
104  strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
105  strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
106  info.modify_counter = card->mixer_oss_change_count;
107  if (copy_to_user(_info, &info, sizeof(info)))
108  return -EFAULT;
109  return 0;
110 }
111 
112 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
113  _old_mixer_info __user *_info)
114 {
115  struct snd_card *card = fmixer->card;
116  struct snd_mixer_oss *mixer = fmixer->mixer;
117  _old_mixer_info info;
118 
119  memset(&info, 0, sizeof(info));
120  strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
121  strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
122  if (copy_to_user(_info, &info, sizeof(info)))
123  return -EFAULT;
124  return 0;
125 }
126 
127 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
128 {
129  struct snd_mixer_oss *mixer = fmixer->mixer;
130  int result = 0;
131 
132  if (mixer == NULL)
133  return -EIO;
134  if (mixer->get_recsrc && mixer->put_recsrc)
135  result |= SOUND_CAP_EXCL_INPUT;
136  return result;
137 }
138 
139 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
140 {
141  struct snd_mixer_oss *mixer = fmixer->mixer;
142  struct snd_mixer_oss_slot *pslot;
143  int result = 0, chn;
144 
145  if (mixer == NULL)
146  return -EIO;
147  for (chn = 0; chn < 31; chn++) {
148  pslot = &mixer->slots[chn];
149  if (pslot->put_volume || pslot->put_recsrc)
150  result |= 1 << chn;
151  }
152  return result;
153 }
154 
155 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
156 {
157  struct snd_mixer_oss *mixer = fmixer->mixer;
158  struct snd_mixer_oss_slot *pslot;
159  int result = 0, chn;
160 
161  if (mixer == NULL)
162  return -EIO;
163  for (chn = 0; chn < 31; chn++) {
164  pslot = &mixer->slots[chn];
165  if (pslot->put_volume && pslot->stereo)
166  result |= 1 << chn;
167  }
168  return result;
169 }
170 
171 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
172 {
173  struct snd_mixer_oss *mixer = fmixer->mixer;
174  int result = 0;
175 
176  if (mixer == NULL)
177  return -EIO;
178  if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
179  result = mixer->mask_recsrc;
180  } else {
181  struct snd_mixer_oss_slot *pslot;
182  int chn;
183  for (chn = 0; chn < 31; chn++) {
184  pslot = &mixer->slots[chn];
185  if (pslot->put_recsrc)
186  result |= 1 << chn;
187  }
188  }
189  return result;
190 }
191 
192 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
193 {
194  struct snd_mixer_oss *mixer = fmixer->mixer;
195  int result = 0;
196 
197  if (mixer == NULL)
198  return -EIO;
199  if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
200  int err;
201  unsigned int index;
202  if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
203  return err;
204  result = 1 << index;
205  } else {
206  struct snd_mixer_oss_slot *pslot;
207  int chn;
208  for (chn = 0; chn < 31; chn++) {
209  pslot = &mixer->slots[chn];
210  if (pslot->get_recsrc) {
211  int active = 0;
212  pslot->get_recsrc(fmixer, pslot, &active);
213  if (active)
214  result |= 1 << chn;
215  }
216  }
217  }
218  return mixer->oss_recsrc = result;
219 }
220 
221 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
222 {
223  struct snd_mixer_oss *mixer = fmixer->mixer;
224  struct snd_mixer_oss_slot *pslot;
225  int chn, active;
226  unsigned int index;
227  int result = 0;
228 
229  if (mixer == NULL)
230  return -EIO;
231  if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
232  if (recsrc & ~mixer->oss_recsrc)
233  recsrc &= ~mixer->oss_recsrc;
234  mixer->put_recsrc(fmixer, ffz(~recsrc));
235  mixer->get_recsrc(fmixer, &index);
236  result = 1 << index;
237  }
238  for (chn = 0; chn < 31; chn++) {
239  pslot = &mixer->slots[chn];
240  if (pslot->put_recsrc) {
241  active = (recsrc & (1 << chn)) ? 1 : 0;
242  pslot->put_recsrc(fmixer, pslot, active);
243  }
244  }
245  if (! result) {
246  for (chn = 0; chn < 31; chn++) {
247  pslot = &mixer->slots[chn];
248  if (pslot->get_recsrc) {
249  active = 0;
250  pslot->get_recsrc(fmixer, pslot, &active);
251  if (active)
252  result |= 1 << chn;
253  }
254  }
255  }
256  return result;
257 }
258 
259 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
260 {
261  struct snd_mixer_oss *mixer = fmixer->mixer;
262  struct snd_mixer_oss_slot *pslot;
263  int result = 0, left, right;
264 
265  if (mixer == NULL || slot > 30)
266  return -EIO;
267  pslot = &mixer->slots[slot];
268  left = pslot->volume[0];
269  right = pslot->volume[1];
270  if (pslot->get_volume)
271  result = pslot->get_volume(fmixer, pslot, &left, &right);
272  if (!pslot->stereo)
273  right = left;
274  if (snd_BUG_ON(left < 0 || left > 100))
275  return -EIO;
276  if (snd_BUG_ON(right < 0 || right > 100))
277  return -EIO;
278  if (result >= 0) {
279  pslot->volume[0] = left;
280  pslot->volume[1] = right;
281  result = (left & 0xff) | ((right & 0xff) << 8);
282  }
283  return result;
284 }
285 
286 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
287  int slot, int volume)
288 {
289  struct snd_mixer_oss *mixer = fmixer->mixer;
290  struct snd_mixer_oss_slot *pslot;
291  int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
292 
293  if (mixer == NULL || slot > 30)
294  return -EIO;
295  pslot = &mixer->slots[slot];
296  if (left > 100)
297  left = 100;
298  if (right > 100)
299  right = 100;
300  if (!pslot->stereo)
301  right = left;
302  if (pslot->put_volume)
303  result = pslot->put_volume(fmixer, pslot, left, right);
304  if (result < 0)
305  return result;
306  pslot->volume[0] = left;
307  pslot->volume[1] = right;
308  return (left & 0xff) | ((right & 0xff) << 8);
309 }
310 
311 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
312 {
313  void __user *argp = (void __user *)arg;
314  int __user *p = argp;
315  int tmp;
316 
317  if (snd_BUG_ON(!fmixer))
318  return -ENXIO;
319  if (((cmd >> 8) & 0xff) == 'M') {
320  switch (cmd) {
321  case SOUND_MIXER_INFO:
322  return snd_mixer_oss_info(fmixer, argp);
323  case SOUND_OLD_MIXER_INFO:
324  return snd_mixer_oss_info_obsolete(fmixer, argp);
325  case SOUND_MIXER_WRITE_RECSRC:
326  if (get_user(tmp, p))
327  return -EFAULT;
328  tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
329  if (tmp < 0)
330  return tmp;
331  return put_user(tmp, p);
332  case OSS_GETVERSION:
333  return put_user(SNDRV_OSS_VERSION, p);
334  case OSS_ALSAEMULVER:
335  return put_user(1, p);
336  case SOUND_MIXER_READ_DEVMASK:
337  tmp = snd_mixer_oss_devmask(fmixer);
338  if (tmp < 0)
339  return tmp;
340  return put_user(tmp, p);
341  case SOUND_MIXER_READ_STEREODEVS:
342  tmp = snd_mixer_oss_stereodevs(fmixer);
343  if (tmp < 0)
344  return tmp;
345  return put_user(tmp, p);
346  case SOUND_MIXER_READ_RECMASK:
347  tmp = snd_mixer_oss_recmask(fmixer);
348  if (tmp < 0)
349  return tmp;
350  return put_user(tmp, p);
351  case SOUND_MIXER_READ_CAPS:
352  tmp = snd_mixer_oss_caps(fmixer);
353  if (tmp < 0)
354  return tmp;
355  return put_user(tmp, p);
356  case SOUND_MIXER_READ_RECSRC:
357  tmp = snd_mixer_oss_get_recsrc(fmixer);
358  if (tmp < 0)
359  return tmp;
360  return put_user(tmp, p);
361  }
362  }
363  if (cmd & SIOC_IN) {
364  if (get_user(tmp, p))
365  return -EFAULT;
366  tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
367  if (tmp < 0)
368  return tmp;
369  return put_user(tmp, p);
370  } else if (cmd & SIOC_OUT) {
371  tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
372  if (tmp < 0)
373  return tmp;
374  return put_user(tmp, p);
375  }
376  return -ENXIO;
377 }
378 
379 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
380 {
381  return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
382 }
383 
384 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
385 {
386  struct snd_mixer_oss_file fmixer;
387 
388  if (snd_BUG_ON(!card))
389  return -ENXIO;
390  if (card->mixer_oss == NULL)
391  return -ENXIO;
392  memset(&fmixer, 0, sizeof(fmixer));
393  fmixer.card = card;
394  fmixer.mixer = card->mixer_oss;
395  return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
396 }
397 
398 #ifdef CONFIG_COMPAT
399 /* all compatible */
400 #define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl
401 #else
402 #define snd_mixer_oss_ioctl_compat NULL
403 #endif
404 
405 /*
406  * REGISTRATION PART
407  */
408 
409 static const struct file_operations snd_mixer_oss_f_ops =
410 {
411  .owner = THIS_MODULE,
412  .open = snd_mixer_oss_open,
413  .release = snd_mixer_oss_release,
414  .llseek = no_llseek,
415  .unlocked_ioctl = snd_mixer_oss_ioctl,
416  .compat_ioctl = snd_mixer_oss_ioctl_compat,
417 };
418 
419 /*
420  * utilities
421  */
422 
423 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
424 {
425  long orange = omax - omin, nrange = nmax - nmin;
426 
427  if (orange == 0)
428  return 0;
429  return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
430 }
431 
432 /* convert from alsa native to oss values (0-100) */
433 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
434 {
435  if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
436  return *old;
437  return snd_mixer_oss_conv(val, min, max, 0, 100);
438 }
439 
440 /* convert from oss to alsa native values */
441 static long snd_mixer_oss_conv2(long val, long min, long max)
442 {
443  return snd_mixer_oss_conv(val, 0, 100, min, max);
444 }
445 
446 #if 0
447 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
448 {
449  struct snd_mixer_oss *mixer = card->mixer_oss;
450  if (mixer)
451  mixer->mask_recsrc |= 1 << slot;
452 }
453 
454 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
455 {
456  struct snd_mixer_oss *mixer = card->mixer_oss;
457  if (mixer && (mixer->mask_recsrc & (1 << slot)))
458  return 1;
459  return 0;
460 }
461 #endif
462 
463 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
464 
465 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
466 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
467 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
468 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
469 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
470 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
471 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
472 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
473 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
474 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
475 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
476 
477 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
478 
479 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
480 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
481 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
482 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
483 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
484 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
485 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
486 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
487 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
488 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
489 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
490 
491 struct slot {
492  unsigned int signature;
493  unsigned int present;
494  unsigned int channels;
495  unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
496  unsigned int capture_item;
497  struct snd_mixer_oss_assign_table *assigned;
498  unsigned int allocated: 1;
499 };
500 
501 #define ID_UNKNOWN ((unsigned int)-1)
502 
503 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
504 {
505  struct snd_card *card = mixer->card;
506  struct snd_ctl_elem_id id;
507 
508  memset(&id, 0, sizeof(id));
509  id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
510  strlcpy(id.name, name, sizeof(id.name));
511  id.index = index;
512  return snd_ctl_find_id(card, &id);
513 }
514 
515 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
516  struct snd_mixer_oss_slot *pslot,
517  unsigned int numid,
518  int *left, int *right)
519 {
520  struct snd_ctl_elem_info *uinfo;
521  struct snd_ctl_elem_value *uctl;
522  struct snd_kcontrol *kctl;
523  struct snd_card *card = fmixer->card;
524 
525  if (numid == ID_UNKNOWN)
526  return;
527  down_read(&card->controls_rwsem);
528  if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
529  up_read(&card->controls_rwsem);
530  return;
531  }
532  uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
533  uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
534  if (uinfo == NULL || uctl == NULL)
535  goto __unalloc;
536  if (kctl->info(kctl, uinfo))
537  goto __unalloc;
538  if (kctl->get(kctl, uctl))
539  goto __unalloc;
540  if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
541  uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
542  goto __unalloc;
543  *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
544  if (uinfo->count > 1)
545  *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
546  __unalloc:
547  up_read(&card->controls_rwsem);
548  kfree(uctl);
549  kfree(uinfo);
550 }
551 
552 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
553  struct snd_mixer_oss_slot *pslot,
554  unsigned int numid,
555  int *left, int *right,
556  int route)
557 {
558  struct snd_ctl_elem_info *uinfo;
559  struct snd_ctl_elem_value *uctl;
560  struct snd_kcontrol *kctl;
561  struct snd_card *card = fmixer->card;
562 
563  if (numid == ID_UNKNOWN)
564  return;
565  down_read(&card->controls_rwsem);
566  if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
567  up_read(&card->controls_rwsem);
568  return;
569  }
570  uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
571  uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
572  if (uinfo == NULL || uctl == NULL)
573  goto __unalloc;
574  if (kctl->info(kctl, uinfo))
575  goto __unalloc;
576  if (kctl->get(kctl, uctl))
577  goto __unalloc;
578  if (!uctl->value.integer.value[0]) {
579  *left = 0;
580  if (uinfo->count == 1)
581  *right = 0;
582  }
583  if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
584  *right = 0;
585  __unalloc:
586  up_read(&card->controls_rwsem);
587  kfree(uctl);
588  kfree(uinfo);
589 }
590 
591 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
592  struct snd_mixer_oss_slot *pslot,
593  int *left, int *right)
594 {
595  struct slot *slot = pslot->private_data;
596 
597  *left = *right = 100;
598  if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
599  snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
600  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
601  snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
602  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
603  snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
604  }
605  if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
606  snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
607  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
608  snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
609  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
610  snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
611  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
612  snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
613  }
614  return 0;
615 }
616 
617 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
618  struct snd_mixer_oss_slot *pslot,
619  unsigned int numid,
620  int left, int right)
621 {
622  struct snd_ctl_elem_info *uinfo;
623  struct snd_ctl_elem_value *uctl;
624  struct snd_kcontrol *kctl;
625  struct snd_card *card = fmixer->card;
626  int res;
627 
628  if (numid == ID_UNKNOWN)
629  return;
630  down_read(&card->controls_rwsem);
631  if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
632  up_read(&card->controls_rwsem);
633  return;
634  }
635  uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
636  uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
637  if (uinfo == NULL || uctl == NULL)
638  goto __unalloc;
639  if (kctl->info(kctl, uinfo))
640  goto __unalloc;
641  if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
642  uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
643  goto __unalloc;
644  uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
645  if (uinfo->count > 1)
646  uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
647  if ((res = kctl->put(kctl, uctl)) < 0)
648  goto __unalloc;
649  if (res > 0)
650  snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
651  __unalloc:
652  up_read(&card->controls_rwsem);
653  kfree(uctl);
654  kfree(uinfo);
655 }
656 
657 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
658  struct snd_mixer_oss_slot *pslot,
659  unsigned int numid,
660  int left, int right,
661  int route)
662 {
663  struct snd_ctl_elem_info *uinfo;
664  struct snd_ctl_elem_value *uctl;
665  struct snd_kcontrol *kctl;
666  struct snd_card *card = fmixer->card;
667  int res;
668 
669  if (numid == ID_UNKNOWN)
670  return;
671  down_read(&card->controls_rwsem);
672  if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
673  up_read(&card->controls_rwsem);
674  return;
675  }
676  uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
677  uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
678  if (uinfo == NULL || uctl == NULL)
679  goto __unalloc;
680  if (kctl->info(kctl, uinfo))
681  goto __unalloc;
682  if (uinfo->count > 1) {
683  uctl->value.integer.value[0] = left > 0 ? 1 : 0;
684  uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
685  if (route) {
686  uctl->value.integer.value[1] =
687  uctl->value.integer.value[2] = 0;
688  }
689  } else {
690  uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
691  }
692  if ((res = kctl->put(kctl, uctl)) < 0)
693  goto __unalloc;
694  if (res > 0)
695  snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
696  __unalloc:
697  up_read(&card->controls_rwsem);
698  kfree(uctl);
699  kfree(uinfo);
700 }
701 
702 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
703  struct snd_mixer_oss_slot *pslot,
704  int left, int right)
705 {
706  struct slot *slot = pslot->private_data;
707 
708  if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
709  snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
710  if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
711  snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
712  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
713  snd_mixer_oss_put_volume1_vol(fmixer, pslot,
714  slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
715  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
716  snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
717  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
718  snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
719  }
720  if (left || right) {
721  if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
722  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
723  if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
724  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
725  if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
726  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
727  if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
728  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
729  if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
730  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
731  if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
732  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
733  } else {
734  if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
735  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
736  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
737  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
738  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
739  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
740  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
741  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
742  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
743  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
744  } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
745  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
746  }
747  }
748  return 0;
749 }
750 
751 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
752  struct snd_mixer_oss_slot *pslot,
753  int *active)
754 {
755  struct slot *slot = pslot->private_data;
756  int left, right;
757 
758  left = right = 1;
759  snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
760  *active = (left || right) ? 1 : 0;
761  return 0;
762 }
763 
764 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
765  struct snd_mixer_oss_slot *pslot,
766  int *active)
767 {
768  struct slot *slot = pslot->private_data;
769  int left, right;
770 
771  left = right = 1;
772  snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
773  *active = (left || right) ? 1 : 0;
774  return 0;
775 }
776 
777 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
778  struct snd_mixer_oss_slot *pslot,
779  int active)
780 {
781  struct slot *slot = pslot->private_data;
782 
783  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
784  return 0;
785 }
786 
787 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
788  struct snd_mixer_oss_slot *pslot,
789  int active)
790 {
791  struct slot *slot = pslot->private_data;
792 
793  snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
794  return 0;
795 }
796 
797 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
798 {
799  struct snd_card *card = fmixer->card;
800  struct snd_mixer_oss *mixer = fmixer->mixer;
801  struct snd_kcontrol *kctl;
802  struct snd_mixer_oss_slot *pslot;
803  struct slot *slot;
804  struct snd_ctl_elem_info *uinfo;
805  struct snd_ctl_elem_value *uctl;
806  int err, idx;
807 
808  uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
809  uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
810  if (uinfo == NULL || uctl == NULL) {
811  err = -ENOMEM;
812  goto __free_only;
813  }
814  down_read(&card->controls_rwsem);
815  kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
816  if (! kctl) {
817  err = -ENOENT;
818  goto __unlock;
819  }
820  if ((err = kctl->info(kctl, uinfo)) < 0)
821  goto __unlock;
822  if ((err = kctl->get(kctl, uctl)) < 0)
823  goto __unlock;
824  for (idx = 0; idx < 32; idx++) {
825  if (!(mixer->mask_recsrc & (1 << idx)))
826  continue;
827  pslot = &mixer->slots[idx];
828  slot = pslot->private_data;
829  if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
830  continue;
831  if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
832  continue;
833  if (slot->capture_item == uctl->value.enumerated.item[0]) {
834  *active_index = idx;
835  break;
836  }
837  }
838  err = 0;
839  __unlock:
840  up_read(&card->controls_rwsem);
841  __free_only:
842  kfree(uctl);
843  kfree(uinfo);
844  return err;
845 }
846 
847 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
848 {
849  struct snd_card *card = fmixer->card;
850  struct snd_mixer_oss *mixer = fmixer->mixer;
851  struct snd_kcontrol *kctl;
852  struct snd_mixer_oss_slot *pslot;
853  struct slot *slot = NULL;
854  struct snd_ctl_elem_info *uinfo;
855  struct snd_ctl_elem_value *uctl;
856  int err;
857  unsigned int idx;
858 
859  uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
860  uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
861  if (uinfo == NULL || uctl == NULL) {
862  err = -ENOMEM;
863  goto __free_only;
864  }
865  down_read(&card->controls_rwsem);
866  kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
867  if (! kctl) {
868  err = -ENOENT;
869  goto __unlock;
870  }
871  if ((err = kctl->info(kctl, uinfo)) < 0)
872  goto __unlock;
873  for (idx = 0; idx < 32; idx++) {
874  if (!(mixer->mask_recsrc & (1 << idx)))
875  continue;
876  pslot = &mixer->slots[idx];
877  slot = pslot->private_data;
878  if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
879  continue;
880  if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
881  continue;
882  if (idx == active_index)
883  break;
884  slot = NULL;
885  }
886  if (! slot)
887  goto __unlock;
888  for (idx = 0; idx < uinfo->count; idx++)
889  uctl->value.enumerated.item[idx] = slot->capture_item;
890  err = kctl->put(kctl, uctl);
891  if (err > 0)
892  snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
893  err = 0;
894  __unlock:
895  up_read(&card->controls_rwsem);
896  __free_only:
897  kfree(uctl);
898  kfree(uinfo);
899  return err;
900 }
901 
902 struct snd_mixer_oss_assign_table {
903  int oss_id;
904  const char *name;
905  int index;
906 };
907 
908 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
909 {
910  struct snd_ctl_elem_info *info;
911  struct snd_kcontrol *kcontrol;
912  struct snd_card *card = mixer->card;
913  int err;
914 
915  down_read(&card->controls_rwsem);
916  kcontrol = snd_mixer_oss_test_id(mixer, name, index);
917  if (kcontrol == NULL) {
918  up_read(&card->controls_rwsem);
919  return 0;
920  }
921  info = kmalloc(sizeof(*info), GFP_KERNEL);
922  if (! info) {
923  up_read(&card->controls_rwsem);
924  return -ENOMEM;
925  }
926  if ((err = kcontrol->info(kcontrol, info)) < 0) {
927  up_read(&card->controls_rwsem);
928  kfree(info);
929  return err;
930  }
931  slot->numid[item] = kcontrol->id.numid;
932  up_read(&card->controls_rwsem);
933  if (info->count > slot->channels)
934  slot->channels = info->count;
935  slot->present |= 1 << item;
936  kfree(info);
937  return 0;
938 }
939 
940 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
941 {
942  struct slot *p = chn->private_data;
943  if (p) {
944  if (p->allocated && p->assigned) {
945  kfree(p->assigned->name);
946  kfree(p->assigned);
947  }
948  kfree(p);
949  }
950 }
951 
952 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
953 {
954  int idx = rslot->number; /* remember this */
955  if (rslot->private_free)
956  rslot->private_free(rslot);
957  memset(rslot, 0, sizeof(*rslot));
958  rslot->number = idx;
959 }
960 
961 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
962  snd_mixer_oss_build_input! */
963 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
964  struct snd_mixer_oss_assign_table *ptr,
965  struct slot *slot)
966 {
967  char str[64];
968  int err;
969 
970  err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
971  SNDRV_MIXER_OSS_ITEM_GLOBAL);
972  if (err)
973  return err;
974  sprintf(str, "%s Switch", ptr->name);
975  err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
976  SNDRV_MIXER_OSS_ITEM_GSWITCH);
977  if (err)
978  return err;
979  sprintf(str, "%s Route", ptr->name);
980  err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
981  SNDRV_MIXER_OSS_ITEM_GROUTE);
982  if (err)
983  return err;
984  sprintf(str, "%s Volume", ptr->name);
985  err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
986  SNDRV_MIXER_OSS_ITEM_GVOLUME);
987  if (err)
988  return err;
989  sprintf(str, "%s Playback Switch", ptr->name);
990  err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
991  SNDRV_MIXER_OSS_ITEM_PSWITCH);
992  if (err)
993  return err;
994  sprintf(str, "%s Playback Route", ptr->name);
995  err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
996  SNDRV_MIXER_OSS_ITEM_PROUTE);
997  if (err)
998  return err;
999  sprintf(str, "%s Playback Volume", ptr->name);
1000  err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1001  SNDRV_MIXER_OSS_ITEM_PVOLUME);
1002  if (err)
1003  return err;
1004  sprintf(str, "%s Capture Switch", ptr->name);
1005  err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1006  SNDRV_MIXER_OSS_ITEM_CSWITCH);
1007  if (err)
1008  return err;
1009  sprintf(str, "%s Capture Route", ptr->name);
1010  err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1011  SNDRV_MIXER_OSS_ITEM_CROUTE);
1012  if (err)
1013  return err;
1014  sprintf(str, "%s Capture Volume", ptr->name);
1015  err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1016  SNDRV_MIXER_OSS_ITEM_CVOLUME);
1017  if (err)
1018  return err;
1019 
1020  return 0;
1021 }
1022 
1023 /*
1024  * build an OSS mixer element.
1025  * ptr_allocated means the entry is dynamically allocated (change via proc file).
1026  * when replace_old = 1, the old entry is replaced with the new one.
1027  */
1028 static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
1029 {
1030  struct slot slot;
1031  struct slot *pslot;
1032  struct snd_kcontrol *kctl;
1033  struct snd_mixer_oss_slot *rslot;
1034  char str[64];
1035 
1036  /* check if already assigned */
1037  if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1038  return 0;
1039 
1040  memset(&slot, 0, sizeof(slot));
1041  memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1042  if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1043  return 0;
1044  down_read(&mixer->card->controls_rwsem);
1045  if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1046  struct snd_ctl_elem_info *uinfo;
1047 
1048  uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1049  if (! uinfo) {
1050  up_read(&mixer->card->controls_rwsem);
1051  return -ENOMEM;
1052  }
1053 
1054  if (kctl->info(kctl, uinfo)) {
1055  up_read(&mixer->card->controls_rwsem);
1056  kfree(uinfo);
1057  return 0;
1058  }
1059  strcpy(str, ptr->name);
1060  if (!strcmp(str, "Master"))
1061  strcpy(str, "Mix");
1062  if (!strcmp(str, "Master Mono"))
1063  strcpy(str, "Mix Mono");
1064  slot.capture_item = 0;
1065  if (!strcmp(uinfo->value.enumerated.name, str)) {
1066  slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1067  } else {
1068  for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1069  uinfo->value.enumerated.item = slot.capture_item;
1070  if (kctl->info(kctl, uinfo)) {
1071  up_read(&mixer->card->controls_rwsem);
1072  kfree(uinfo);
1073  return 0;
1074  }
1075  if (!strcmp(uinfo->value.enumerated.name, str)) {
1076  slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1077  break;
1078  }
1079  }
1080  }
1081  kfree(uinfo);
1082  }
1083  up_read(&mixer->card->controls_rwsem);
1084  if (slot.present != 0) {
1085  pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1086  if (! pslot)
1087  return -ENOMEM;
1088  *pslot = slot;
1089  pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1090  pslot->assigned = ptr;
1091  pslot->allocated = ptr_allocated;
1092  rslot = &mixer->slots[ptr->oss_id];
1093  mixer_slot_clear(rslot);
1094  rslot->stereo = slot.channels > 1 ? 1 : 0;
1095  rslot->get_volume = snd_mixer_oss_get_volume1;
1096  rslot->put_volume = snd_mixer_oss_put_volume1;
1097  /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1098  if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1099  rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1100  rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1101  } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1102  rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1103  rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1104  } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1105  mixer->mask_recsrc |= 1 << ptr->oss_id;
1106  }
1107  rslot->private_data = pslot;
1108  rslot->private_free = snd_mixer_oss_slot_free;
1109  return 1;
1110  }
1111  return 0;
1112 }
1113 
1114 #ifdef CONFIG_PROC_FS
1115 /*
1116  */
1117 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1118 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1119  MIXER_VOL(VOLUME),
1120  MIXER_VOL(BASS),
1121  MIXER_VOL(TREBLE),
1122  MIXER_VOL(SYNTH),
1123  MIXER_VOL(PCM),
1124  MIXER_VOL(SPEAKER),
1125  MIXER_VOL(LINE),
1126  MIXER_VOL(MIC),
1127  MIXER_VOL(CD),
1128  MIXER_VOL(IMIX),
1129  MIXER_VOL(ALTPCM),
1130  MIXER_VOL(RECLEV),
1131  MIXER_VOL(IGAIN),
1132  MIXER_VOL(OGAIN),
1133  MIXER_VOL(LINE1),
1134  MIXER_VOL(LINE2),
1135  MIXER_VOL(LINE3),
1136  MIXER_VOL(DIGITAL1),
1137  MIXER_VOL(DIGITAL2),
1138  MIXER_VOL(DIGITAL3),
1139  MIXER_VOL(PHONEIN),
1140  MIXER_VOL(PHONEOUT),
1141  MIXER_VOL(VIDEO),
1142  MIXER_VOL(RADIO),
1143  MIXER_VOL(MONITOR),
1144 };
1145 
1146 /*
1147  * /proc interface
1148  */
1149 
1150 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1151  struct snd_info_buffer *buffer)
1152 {
1153  struct snd_mixer_oss *mixer = entry->private_data;
1154  int i;
1155 
1156  mutex_lock(&mixer->reg_mutex);
1157  for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1158  struct slot *p;
1159 
1160  if (! oss_mixer_names[i])
1161  continue;
1162  p = (struct slot *)mixer->slots[i].private_data;
1163  snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1164  if (p && p->assigned)
1165  snd_iprintf(buffer, "\"%s\" %d\n",
1166  p->assigned->name,
1167  p->assigned->index);
1168  else
1169  snd_iprintf(buffer, "\"\" 0\n");
1170  }
1171  mutex_unlock(&mixer->reg_mutex);
1172 }
1173 
1174 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1175  struct snd_info_buffer *buffer)
1176 {
1177  struct snd_mixer_oss *mixer = entry->private_data;
1178  char line[128], str[32], idxstr[16];
1179  const char *cptr;
1180  int ch, idx;
1181  struct snd_mixer_oss_assign_table *tbl;
1182  struct slot *slot;
1183 
1184  while (!snd_info_get_line(buffer, line, sizeof(line))) {
1185  cptr = snd_info_get_str(str, line, sizeof(str));
1186  for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1187  if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1188  break;
1189  if (ch >= SNDRV_OSS_MAX_MIXERS) {
1190  snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1191  continue;
1192  }
1193  cptr = snd_info_get_str(str, cptr, sizeof(str));
1194  if (! *str) {
1195  /* remove the entry */
1196  mutex_lock(&mixer->reg_mutex);
1197  mixer_slot_clear(&mixer->slots[ch]);
1198  mutex_unlock(&mixer->reg_mutex);
1199  continue;
1200  }
1201  snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1202  idx = simple_strtoul(idxstr, NULL, 10);
1203  if (idx >= 0x4000) { /* too big */
1204  snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1205  continue;
1206  }
1207  mutex_lock(&mixer->reg_mutex);
1208  slot = (struct slot *)mixer->slots[ch].private_data;
1209  if (slot && slot->assigned &&
1210  slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1211  /* not changed */
1212  goto __unlock;
1213  tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1214  if (! tbl) {
1215  snd_printk(KERN_ERR "mixer_oss: no memory\n");
1216  goto __unlock;
1217  }
1218  tbl->oss_id = ch;
1219  tbl->name = kstrdup(str, GFP_KERNEL);
1220  if (! tbl->name) {
1221  kfree(tbl);
1222  goto __unlock;
1223  }
1224  tbl->index = idx;
1225  if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1226  kfree(tbl->name);
1227  kfree(tbl);
1228  }
1229  __unlock:
1230  mutex_unlock(&mixer->reg_mutex);
1231  }
1232 }
1233 
1234 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1235 {
1236  struct snd_info_entry *entry;
1237 
1238  entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1239  mixer->card->proc_root);
1240  if (! entry)
1241  return;
1242  entry->content = SNDRV_INFO_CONTENT_TEXT;
1243  entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1244  entry->c.text.read = snd_mixer_oss_proc_read;
1245  entry->c.text.write = snd_mixer_oss_proc_write;
1246  entry->private_data = mixer;
1247  if (snd_info_register(entry) < 0) {
1248  snd_info_free_entry(entry);
1249  entry = NULL;
1250  }
1251  mixer->proc_entry = entry;
1252 }
1253 
1254 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1255 {
1256  snd_info_free_entry(mixer->proc_entry);
1257  mixer->proc_entry = NULL;
1258 }
1259 #else /* !CONFIG_PROC_FS */
1260 #define snd_mixer_oss_proc_init(mix)
1261 #define snd_mixer_oss_proc_done(mix)
1262 #endif /* CONFIG_PROC_FS */
1263 
1264 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1265 {
1266  static struct snd_mixer_oss_assign_table table[] = {
1267  { SOUND_MIXER_VOLUME, "Master", 0 },
1268  { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1269  { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1270  { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1271  { SOUND_MIXER_SYNTH, "Synth", 0 },
1272  { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1273  { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1274  { SOUND_MIXER_PCM, "PCM", 0 },
1275  { SOUND_MIXER_SPEAKER, "Beep", 0 },
1276  { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
1277  { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1278  { SOUND_MIXER_LINE, "Line", 0 },
1279  { SOUND_MIXER_MIC, "Mic", 0 },
1280  { SOUND_MIXER_CD, "CD", 0 },
1281  { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1282  { SOUND_MIXER_ALTPCM, "PCM", 1 },
1283  { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1284  { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1285  { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1286  { SOUND_MIXER_IGAIN, "Capture", 0 },
1287  { SOUND_MIXER_OGAIN, "Playback", 0 },
1288  { SOUND_MIXER_LINE1, "Aux", 0 },
1289  { SOUND_MIXER_LINE2, "Aux", 1 },
1290  { SOUND_MIXER_LINE3, "Aux", 2 },
1291  { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1292  { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1293  { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1294  { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1295  { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1296  { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1297  { SOUND_MIXER_PHONEIN, "Phone", 0 },
1298  { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1299  { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1300  { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1301  { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1302  { SOUND_MIXER_VIDEO, "Video", 0 },
1303  { SOUND_MIXER_RADIO, "Radio", 0 },
1304  { SOUND_MIXER_MONITOR, "Monitor", 0 }
1305  };
1306  unsigned int idx;
1307 
1308  for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1309  snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1310  if (mixer->mask_recsrc) {
1311  mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1312  mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1313  }
1314 }
1315 
1316 /*
1317  *
1318  */
1319 
1320 static int snd_mixer_oss_free1(void *private)
1321 {
1322  struct snd_mixer_oss *mixer = private;
1323  struct snd_card *card;
1324  int idx;
1325 
1326  if (!mixer)
1327  return 0;
1328  card = mixer->card;
1329  if (snd_BUG_ON(mixer != card->mixer_oss))
1330  return -ENXIO;
1331  card->mixer_oss = NULL;
1332  for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1333  struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1334  if (chn->private_free)
1335  chn->private_free(chn);
1336  }
1337  kfree(mixer);
1338  return 0;
1339 }
1340 
1341 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1342 {
1343  struct snd_mixer_oss *mixer;
1344 
1345  if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1346  char name[128];
1347  int idx, err;
1348 
1349  mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1350  if (mixer == NULL)
1351  return -ENOMEM;
1352  mutex_init(&mixer->reg_mutex);
1353  sprintf(name, "mixer%i%i", card->number, 0);
1354  if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1355  card, 0,
1356  &snd_mixer_oss_f_ops, card,
1357  name)) < 0) {
1358  snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1359  card->number, 0);
1360  kfree(mixer);
1361  return err;
1362  }
1363  mixer->oss_dev_alloc = 1;
1364  mixer->card = card;
1365  if (*card->mixername)
1366  strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1367  else
1368  strlcpy(mixer->name, name, sizeof(mixer->name));
1369 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1370  snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1371  card->number,
1372  mixer->name);
1373 #endif
1374  for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1375  mixer->slots[idx].number = idx;
1376  card->mixer_oss = mixer;
1377  snd_mixer_oss_build(mixer);
1378  snd_mixer_oss_proc_init(mixer);
1379  } else {
1380  mixer = card->mixer_oss;
1381  if (mixer == NULL)
1382  return 0;
1383  if (mixer->oss_dev_alloc) {
1384 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1385  snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1386 #endif
1387  snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1388  mixer->oss_dev_alloc = 0;
1389  }
1390  if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1391  return 0;
1392  snd_mixer_oss_proc_done(mixer);
1393  return snd_mixer_oss_free1(mixer);
1394  }
1395  return 0;
1396 }
1397 
1398 static int __init alsa_mixer_oss_init(void)
1399 {
1400  int idx;
1401 
1402  snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1403  for (idx = 0; idx < SNDRV_CARDS; idx++) {
1404  if (snd_cards[idx])
1405  snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1406  }
1407  return 0;
1408 }
1409 
1410 static void __exit alsa_mixer_oss_exit(void)
1411 {
1412  int idx;
1413 
1414  snd_mixer_oss_notify_callback = NULL;
1415  for (idx = 0; idx < SNDRV_CARDS; idx++) {
1416  if (snd_cards[idx])
1417  snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1418  }
1419 }
1420 
1421 module_init(alsa_mixer_oss_init)
1422 module_exit(alsa_mixer_oss_exit)
1423 
1424 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
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