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Linux-2.6.12-rc2
[deliverable/linux.git] / sound / core / oss / mixer_oss.c
1 /*
2 * OSS emulation layer for the mixer interface
3 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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 <sound/driver.h>
23 #include <linux/init.h>
24 #include <linux/smp_lock.h>
25 #include <linux/slab.h>
26 #include <linux/time.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 <perex@suse.cz>");
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 int cardnum = SNDRV_MINOR_OSS_CARD(iminor(inode));
44 snd_card_t *card;
45 snd_mixer_oss_file_t *fmixer;
46 int err;
47
48 if ((card = snd_cards[cardnum]) == NULL)
49 return -ENODEV;
50 if (card->mixer_oss == NULL)
51 return -ENODEV;
52 err = snd_card_file_add(card, file);
53 if (err < 0)
54 return err;
55 fmixer = kcalloc(1, sizeof(*fmixer), GFP_KERNEL);
56 if (fmixer == NULL) {
57 snd_card_file_remove(card, file);
58 return -ENOMEM;
59 }
60 fmixer->card = card;
61 fmixer->mixer = card->mixer_oss;
62 file->private_data = fmixer;
63 if (!try_module_get(card->module)) {
64 kfree(fmixer);
65 snd_card_file_remove(card, file);
66 return -EFAULT;
67 }
68 return 0;
69 }
70
71 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
72 {
73 snd_mixer_oss_file_t *fmixer;
74
75 if (file->private_data) {
76 fmixer = (snd_mixer_oss_file_t *) file->private_data;
77 module_put(fmixer->card->module);
78 snd_card_file_remove(fmixer->card, file);
79 kfree(fmixer);
80 }
81 return 0;
82 }
83
84 static int snd_mixer_oss_info(snd_mixer_oss_file_t *fmixer,
85 mixer_info __user *_info)
86 {
87 snd_card_t *card = fmixer->card;
88 snd_mixer_oss_t *mixer = fmixer->mixer;
89 struct mixer_info info;
90
91 memset(&info, 0, sizeof(info));
92 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
93 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
94 info.modify_counter = card->mixer_oss_change_count;
95 if (copy_to_user(_info, &info, sizeof(info)))
96 return -EFAULT;
97 return 0;
98 }
99
100 static int snd_mixer_oss_info_obsolete(snd_mixer_oss_file_t *fmixer,
101 _old_mixer_info __user *_info)
102 {
103 snd_card_t *card = fmixer->card;
104 snd_mixer_oss_t *mixer = fmixer->mixer;
105 _old_mixer_info info;
106
107 memset(&info, 0, sizeof(info));
108 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
109 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
110 if (copy_to_user(_info, &info, sizeof(info)))
111 return -EFAULT;
112 return 0;
113 }
114
115 static int snd_mixer_oss_caps(snd_mixer_oss_file_t *fmixer)
116 {
117 snd_mixer_oss_t *mixer = fmixer->mixer;
118 int result = 0;
119
120 if (mixer == NULL)
121 return -EIO;
122 if (mixer->get_recsrc && mixer->put_recsrc)
123 result |= SOUND_CAP_EXCL_INPUT;
124 return result;
125 }
126
127 static int snd_mixer_oss_devmask(snd_mixer_oss_file_t *fmixer)
128 {
129 snd_mixer_oss_t *mixer = fmixer->mixer;
130 snd_mixer_oss_slot_t *pslot;
131 int result = 0, chn;
132
133 if (mixer == NULL)
134 return -EIO;
135 for (chn = 0; chn < 31; chn++) {
136 pslot = &mixer->slots[chn];
137 if (pslot->put_volume || pslot->put_recsrc)
138 result |= 1 << chn;
139 }
140 return result;
141 }
142
143 static int snd_mixer_oss_stereodevs(snd_mixer_oss_file_t *fmixer)
144 {
145 snd_mixer_oss_t *mixer = fmixer->mixer;
146 snd_mixer_oss_slot_t *pslot;
147 int result = 0, chn;
148
149 if (mixer == NULL)
150 return -EIO;
151 for (chn = 0; chn < 31; chn++) {
152 pslot = &mixer->slots[chn];
153 if (pslot->put_volume && pslot->stereo)
154 result |= 1 << chn;
155 }
156 return result;
157 }
158
159 static int snd_mixer_oss_recmask(snd_mixer_oss_file_t *fmixer)
160 {
161 snd_mixer_oss_t *mixer = fmixer->mixer;
162 int result = 0;
163
164 if (mixer == NULL)
165 return -EIO;
166 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
167 result = mixer->mask_recsrc;
168 } else {
169 snd_mixer_oss_slot_t *pslot;
170 int chn;
171 for (chn = 0; chn < 31; chn++) {
172 pslot = &mixer->slots[chn];
173 if (pslot->put_recsrc)
174 result |= 1 << chn;
175 }
176 }
177 return result;
178 }
179
180 static int snd_mixer_oss_get_recsrc(snd_mixer_oss_file_t *fmixer)
181 {
182 snd_mixer_oss_t *mixer = fmixer->mixer;
183 int result = 0;
184
185 if (mixer == NULL)
186 return -EIO;
187 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
188 int err;
189 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
190 return err;
191 result = 1 << result;
192 } else {
193 snd_mixer_oss_slot_t *pslot;
194 int chn;
195 for (chn = 0; chn < 31; chn++) {
196 pslot = &mixer->slots[chn];
197 if (pslot->get_recsrc) {
198 int active = 0;
199 pslot->get_recsrc(fmixer, pslot, &active);
200 if (active)
201 result |= 1 << chn;
202 }
203 }
204 }
205 return mixer->oss_recsrc = result;
206 }
207
208 static int snd_mixer_oss_set_recsrc(snd_mixer_oss_file_t *fmixer, int recsrc)
209 {
210 snd_mixer_oss_t *mixer = fmixer->mixer;
211 snd_mixer_oss_slot_t *pslot;
212 int chn, active;
213 int result = 0;
214
215 if (mixer == NULL)
216 return -EIO;
217 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
218 if (recsrc & ~mixer->oss_recsrc)
219 recsrc &= ~mixer->oss_recsrc;
220 mixer->put_recsrc(fmixer, ffz(~recsrc));
221 mixer->get_recsrc(fmixer, &result);
222 result = 1 << result;
223 }
224 for (chn = 0; chn < 31; chn++) {
225 pslot = &mixer->slots[chn];
226 if (pslot->put_recsrc) {
227 active = (recsrc & (1 << chn)) ? 1 : 0;
228 pslot->put_recsrc(fmixer, pslot, active);
229 }
230 }
231 if (! result) {
232 for (chn = 0; chn < 31; chn++) {
233 pslot = &mixer->slots[chn];
234 if (pslot->get_recsrc) {
235 active = 0;
236 pslot->get_recsrc(fmixer, pslot, &active);
237 if (active)
238 result |= 1 << chn;
239 }
240 }
241 }
242 return result;
243 }
244
245 static int snd_mixer_oss_get_volume(snd_mixer_oss_file_t *fmixer, int slot)
246 {
247 snd_mixer_oss_t *mixer = fmixer->mixer;
248 snd_mixer_oss_slot_t *pslot;
249 int result = 0, left, right;
250
251 if (mixer == NULL || slot > 30)
252 return -EIO;
253 pslot = &mixer->slots[slot];
254 left = pslot->volume[0];
255 right = pslot->volume[1];
256 if (pslot->get_volume)
257 result = pslot->get_volume(fmixer, pslot, &left, &right);
258 if (!pslot->stereo)
259 right = left;
260 snd_assert(left >= 0 && left <= 100, return -EIO);
261 snd_assert(right >= 0 && right <= 100, return -EIO);
262 if (result >= 0) {
263 pslot->volume[0] = left;
264 pslot->volume[1] = right;
265 result = (left & 0xff) | ((right & 0xff) << 8);
266 }
267 return result;
268 }
269
270 static int snd_mixer_oss_set_volume(snd_mixer_oss_file_t *fmixer,
271 int slot, int volume)
272 {
273 snd_mixer_oss_t *mixer = fmixer->mixer;
274 snd_mixer_oss_slot_t *pslot;
275 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
276
277 if (mixer == NULL || slot > 30)
278 return -EIO;
279 pslot = &mixer->slots[slot];
280 if (left > 100)
281 left = 100;
282 if (right > 100)
283 right = 100;
284 if (!pslot->stereo)
285 right = left;
286 if (pslot->put_volume)
287 result = pslot->put_volume(fmixer, pslot, left, right);
288 if (result < 0)
289 return result;
290 pslot->volume[0] = left;
291 pslot->volume[1] = right;
292 return (left & 0xff) | ((right & 0xff) << 8);
293 }
294
295 static int snd_mixer_oss_ioctl1(snd_mixer_oss_file_t *fmixer, unsigned int cmd, unsigned long arg)
296 {
297 void __user *argp = (void __user *)arg;
298 int __user *p = argp;
299 int tmp;
300
301 snd_assert(fmixer != NULL, return -ENXIO);
302 if (((cmd >> 8) & 0xff) == 'M') {
303 switch (cmd) {
304 case SOUND_MIXER_INFO:
305 return snd_mixer_oss_info(fmixer, argp);
306 case SOUND_OLD_MIXER_INFO:
307 return snd_mixer_oss_info_obsolete(fmixer, argp);
308 case SOUND_MIXER_WRITE_RECSRC:
309 if (get_user(tmp, p))
310 return -EFAULT;
311 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
312 if (tmp < 0)
313 return tmp;
314 return put_user(tmp, p);
315 case OSS_GETVERSION:
316 return put_user(SNDRV_OSS_VERSION, p);
317 case OSS_ALSAEMULVER:
318 return put_user(1, p);
319 case SOUND_MIXER_READ_DEVMASK:
320 tmp = snd_mixer_oss_devmask(fmixer);
321 if (tmp < 0)
322 return tmp;
323 return put_user(tmp, p);
324 case SOUND_MIXER_READ_STEREODEVS:
325 tmp = snd_mixer_oss_stereodevs(fmixer);
326 if (tmp < 0)
327 return tmp;
328 return put_user(tmp, p);
329 case SOUND_MIXER_READ_RECMASK:
330 tmp = snd_mixer_oss_recmask(fmixer);
331 if (tmp < 0)
332 return tmp;
333 return put_user(tmp, p);
334 case SOUND_MIXER_READ_CAPS:
335 tmp = snd_mixer_oss_caps(fmixer);
336 if (tmp < 0)
337 return tmp;
338 return put_user(tmp, p);
339 case SOUND_MIXER_READ_RECSRC:
340 tmp = snd_mixer_oss_get_recsrc(fmixer);
341 if (tmp < 0)
342 return tmp;
343 return put_user(tmp, p);
344 }
345 }
346 if (cmd & SIOC_IN) {
347 if (get_user(tmp, p))
348 return -EFAULT;
349 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
350 if (tmp < 0)
351 return tmp;
352 return put_user(tmp, p);
353 } else if (cmd & SIOC_OUT) {
354 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
355 if (tmp < 0)
356 return tmp;
357 return put_user(tmp, p);
358 }
359 return -ENXIO;
360 }
361
362 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
363 {
364 return snd_mixer_oss_ioctl1((snd_mixer_oss_file_t *) file->private_data, cmd, arg);
365 }
366
367 int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg)
368 {
369 snd_mixer_oss_file_t fmixer;
370
371 snd_assert(card != NULL, return -ENXIO);
372 if (card->mixer_oss == NULL)
373 return -ENXIO;
374 memset(&fmixer, 0, sizeof(fmixer));
375 fmixer.card = card;
376 fmixer.mixer = card->mixer_oss;
377 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
378 }
379
380 #ifdef CONFIG_COMPAT
381 /* all compatible */
382 #define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl
383 #else
384 #define snd_mixer_oss_ioctl_compat NULL
385 #endif
386
387 /*
388 * REGISTRATION PART
389 */
390
391 static struct file_operations snd_mixer_oss_f_ops =
392 {
393 .owner = THIS_MODULE,
394 .open = snd_mixer_oss_open,
395 .release = snd_mixer_oss_release,
396 .unlocked_ioctl = snd_mixer_oss_ioctl,
397 .compat_ioctl = snd_mixer_oss_ioctl_compat,
398 };
399
400 static snd_minor_t snd_mixer_oss_reg =
401 {
402 .comment = "mixer",
403 .f_ops = &snd_mixer_oss_f_ops,
404 };
405
406 /*
407 * utilities
408 */
409
410 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
411 {
412 long orange = omax - omin, nrange = nmax - nmin;
413
414 if (orange == 0)
415 return 0;
416 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
417 }
418
419 /* convert from alsa native to oss values (0-100) */
420 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
421 {
422 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
423 return *old;
424 return snd_mixer_oss_conv(val, min, max, 0, 100);
425 }
426
427 /* convert from oss to alsa native values */
428 static long snd_mixer_oss_conv2(long val, long min, long max)
429 {
430 return snd_mixer_oss_conv(val, 0, 100, min, max);
431 }
432
433 #if 0
434 static void snd_mixer_oss_recsrce_set(snd_card_t *card, int slot)
435 {
436 snd_mixer_oss_t *mixer = card->mixer_oss;
437 if (mixer)
438 mixer->mask_recsrc |= 1 << slot;
439 }
440
441 static int snd_mixer_oss_recsrce_get(snd_card_t *card, int slot)
442 {
443 snd_mixer_oss_t *mixer = card->mixer_oss;
444 if (mixer && (mixer->mask_recsrc & (1 << slot)))
445 return 1;
446 return 0;
447 }
448 #endif
449
450 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
451
452 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
453 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
454 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
455 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
456 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
457 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
458 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
459 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
460 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
461 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
462 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
463
464 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
465
466 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
467 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
468 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
469 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
470 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
471 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
472 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
473 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
474 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
475 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
476 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
477
478 struct slot {
479 unsigned int signature;
480 unsigned int present;
481 unsigned int channels;
482 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
483 unsigned int capture_item;
484 struct snd_mixer_oss_assign_table *assigned;
485 unsigned int allocated: 1;
486 };
487
488 #define ID_UNKNOWN ((unsigned int)-1)
489
490 static snd_kcontrol_t *snd_mixer_oss_test_id(snd_mixer_oss_t *mixer, const char *name, int index)
491 {
492 snd_card_t * card = mixer->card;
493 snd_ctl_elem_id_t id;
494
495 memset(&id, 0, sizeof(id));
496 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
497 strcpy(id.name, name);
498 id.index = index;
499 return snd_ctl_find_id(card, &id);
500 }
501
502 static void snd_mixer_oss_get_volume1_vol(snd_mixer_oss_file_t *fmixer,
503 snd_mixer_oss_slot_t *pslot,
504 unsigned int numid,
505 int *left, int *right)
506 {
507 snd_ctl_elem_info_t *uinfo;
508 snd_ctl_elem_value_t *uctl;
509 snd_kcontrol_t *kctl;
510 snd_card_t *card = fmixer->card;
511
512 if (numid == ID_UNKNOWN)
513 return;
514 down_read(&card->controls_rwsem);
515 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
516 up_read(&card->controls_rwsem);
517 return;
518 }
519 uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
520 uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
521 if (uinfo == NULL || uctl == NULL)
522 goto __unalloc;
523 snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
524 snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
525 snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc);
526 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
527 if (uinfo->count > 1)
528 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
529 __unalloc:
530 up_read(&card->controls_rwsem);
531 kfree(uctl);
532 kfree(uinfo);
533 }
534
535 static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer,
536 snd_mixer_oss_slot_t *pslot,
537 unsigned int numid,
538 int *left, int *right,
539 int route)
540 {
541 snd_ctl_elem_info_t *uinfo;
542 snd_ctl_elem_value_t *uctl;
543 snd_kcontrol_t *kctl;
544 snd_card_t *card = fmixer->card;
545
546 if (numid == ID_UNKNOWN)
547 return;
548 down_read(&card->controls_rwsem);
549 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
550 up_read(&card->controls_rwsem);
551 return;
552 }
553 uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
554 uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
555 if (uinfo == NULL || uctl == NULL)
556 goto __unalloc;
557 snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
558 snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
559 if (!uctl->value.integer.value[0]) {
560 *left = 0;
561 if (uinfo->count == 1)
562 *right = 0;
563 }
564 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
565 *right = 0;
566 __unalloc:
567 up_read(&card->controls_rwsem);
568 kfree(uctl);
569 kfree(uinfo);
570 }
571
572 static int snd_mixer_oss_get_volume1(snd_mixer_oss_file_t *fmixer,
573 snd_mixer_oss_slot_t *pslot,
574 int *left, int *right)
575 {
576 struct slot *slot = (struct slot *)pslot->private_data;
577
578 *left = *right = 100;
579 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
580 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
581 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
582 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
583 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
584 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
585 }
586 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
587 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
588 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
589 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
590 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
591 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
592 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
593 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
594 }
595 return 0;
596 }
597
598 static void snd_mixer_oss_put_volume1_vol(snd_mixer_oss_file_t *fmixer,
599 snd_mixer_oss_slot_t *pslot,
600 unsigned int numid,
601 int left, int right)
602 {
603 snd_ctl_elem_info_t *uinfo;
604 snd_ctl_elem_value_t *uctl;
605 snd_kcontrol_t *kctl;
606 snd_card_t *card = fmixer->card;
607 int res;
608
609 if (numid == ID_UNKNOWN)
610 return;
611 down_read(&card->controls_rwsem);
612 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
613 return;
614 uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
615 uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
616 if (uinfo == NULL || uctl == NULL)
617 goto __unalloc;
618 snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
619 snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc);
620 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
621 if (uinfo->count > 1)
622 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
623 snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
624 if (res > 0)
625 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
626 __unalloc:
627 up_read(&card->controls_rwsem);
628 kfree(uctl);
629 kfree(uinfo);
630 }
631
632 static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer,
633 snd_mixer_oss_slot_t *pslot,
634 unsigned int numid,
635 int left, int right,
636 int route)
637 {
638 snd_ctl_elem_info_t *uinfo;
639 snd_ctl_elem_value_t *uctl;
640 snd_kcontrol_t *kctl;
641 snd_card_t *card = fmixer->card;
642 int res;
643
644 if (numid == ID_UNKNOWN)
645 return;
646 down_read(&card->controls_rwsem);
647 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
648 up_read(&fmixer->card->controls_rwsem);
649 return;
650 }
651 uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
652 uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
653 if (uinfo == NULL || uctl == NULL)
654 goto __unalloc;
655 snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
656 if (uinfo->count > 1) {
657 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
658 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
659 if (route) {
660 uctl->value.integer.value[1] =
661 uctl->value.integer.value[2] = 0;
662 }
663 } else {
664 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
665 }
666 snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
667 if (res > 0)
668 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
669 __unalloc:
670 up_read(&card->controls_rwsem);
671 kfree(uctl);
672 kfree(uinfo);
673 }
674
675 static int snd_mixer_oss_put_volume1(snd_mixer_oss_file_t *fmixer,
676 snd_mixer_oss_slot_t *pslot,
677 int left, int right)
678 {
679 struct slot *slot = (struct slot *)pslot->private_data;
680
681 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
682 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
683 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
684 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
685 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
686 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
687 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
688 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
689 }
690 if (left || right) {
691 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
692 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
693 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
694 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
695 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
696 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
697 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
698 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
699 } else {
700 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
701 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
702 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
703 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
704 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
705 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
706 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
707 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
708 }
709 }
710 return 0;
711 }
712
713 static int snd_mixer_oss_get_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
714 snd_mixer_oss_slot_t *pslot,
715 int *active)
716 {
717 struct slot *slot = (struct slot *)pslot->private_data;
718 int left, right;
719
720 left = right = 1;
721 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
722 *active = (left || right) ? 1 : 0;
723 return 0;
724 }
725
726 static int snd_mixer_oss_get_recsrc1_route(snd_mixer_oss_file_t *fmixer,
727 snd_mixer_oss_slot_t *pslot,
728 int *active)
729 {
730 struct slot *slot = (struct slot *)pslot->private_data;
731 int left, right;
732
733 left = right = 1;
734 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
735 *active = (left || right) ? 1 : 0;
736 return 0;
737 }
738
739 static int snd_mixer_oss_put_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
740 snd_mixer_oss_slot_t *pslot,
741 int active)
742 {
743 struct slot *slot = (struct slot *)pslot->private_data;
744
745 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
746 return 0;
747 }
748
749 static int snd_mixer_oss_put_recsrc1_route(snd_mixer_oss_file_t *fmixer,
750 snd_mixer_oss_slot_t *pslot,
751 int active)
752 {
753 struct slot *slot = (struct slot *)pslot->private_data;
754
755 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
756 return 0;
757 }
758
759 static int snd_mixer_oss_get_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int *active_index)
760 {
761 snd_card_t *card = fmixer->card;
762 snd_mixer_oss_t *mixer = fmixer->mixer;
763 snd_kcontrol_t *kctl;
764 snd_mixer_oss_slot_t *pslot;
765 struct slot *slot;
766 snd_ctl_elem_info_t *uinfo;
767 snd_ctl_elem_value_t *uctl;
768 int err, idx;
769
770 uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
771 uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
772 if (uinfo == NULL || uctl == NULL) {
773 err = -ENOMEM;
774 goto __unlock;
775 }
776 down_read(&card->controls_rwsem);
777 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
778 snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
779 snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
780 snd_runtime_check(!(err = kctl->get(kctl, uctl)), goto __unlock);
781 for (idx = 0; idx < 32; idx++) {
782 if (!(mixer->mask_recsrc & (1 << idx)))
783 continue;
784 pslot = &mixer->slots[idx];
785 slot = (struct slot *)pslot->private_data;
786 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
787 continue;
788 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
789 continue;
790 if (slot->capture_item == uctl->value.enumerated.item[0]) {
791 *active_index = idx;
792 break;
793 }
794 }
795 err = 0;
796 __unlock:
797 up_read(&card->controls_rwsem);
798 kfree(uctl);
799 kfree(uinfo);
800 return err;
801 }
802
803 static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index)
804 {
805 snd_card_t *card = fmixer->card;
806 snd_mixer_oss_t *mixer = fmixer->mixer;
807 snd_kcontrol_t *kctl;
808 snd_mixer_oss_slot_t *pslot;
809 struct slot *slot = NULL;
810 snd_ctl_elem_info_t *uinfo;
811 snd_ctl_elem_value_t *uctl;
812 int err;
813 unsigned int idx;
814
815 uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
816 uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
817 if (uinfo == NULL || uctl == NULL) {
818 err = -ENOMEM;
819 goto __unlock;
820 }
821 down_read(&card->controls_rwsem);
822 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
823 snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
824 snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
825 for (idx = 0; idx < 32; idx++) {
826 if (!(mixer->mask_recsrc & (1 << idx)))
827 continue;
828 pslot = &mixer->slots[idx];
829 slot = (struct slot *)pslot->private_data;
830 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
831 continue;
832 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
833 continue;
834 if (idx == active_index)
835 break;
836 slot = NULL;
837 }
838 snd_runtime_check(slot != NULL, goto __unlock);
839 for (idx = 0; idx < uinfo->count; idx++)
840 uctl->value.enumerated.item[idx] = slot->capture_item;
841 snd_runtime_check((err = kctl->put(kctl, uctl)) >= 0, );
842 if (err > 0)
843 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
844 err = 0;
845 __unlock:
846 up_read(&card->controls_rwsem);
847 kfree(uctl);
848 kfree(uinfo);
849 return err;
850 }
851
852 struct snd_mixer_oss_assign_table {
853 int oss_id;
854 const char *name;
855 int index;
856 };
857
858 static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item)
859 {
860 snd_ctl_elem_info_t *info;
861 snd_kcontrol_t *kcontrol;
862 snd_card_t *card = mixer->card;
863 int err;
864
865 down_read(&card->controls_rwsem);
866 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
867 if (kcontrol == NULL) {
868 up_read(&card->controls_rwsem);
869 return 0;
870 }
871 info = kmalloc(sizeof(*info), GFP_KERNEL);
872 if (! info) {
873 up_read(&card->controls_rwsem);
874 return -ENOMEM;
875 }
876 if ((err = kcontrol->info(kcontrol, info)) < 0) {
877 up_read(&card->controls_rwsem);
878 kfree(info);
879 return err;
880 }
881 slot->numid[item] = kcontrol->id.numid;
882 up_read(&card->controls_rwsem);
883 if (info->count > slot->channels)
884 slot->channels = info->count;
885 slot->present |= 1 << item;
886 kfree(info);
887 return 0;
888 }
889
890 static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn)
891 {
892 struct slot *p = (struct slot *)chn->private_data;
893 if (p) {
894 if (p->allocated && p->assigned) {
895 kfree(p->assigned->name);
896 kfree(p->assigned);
897 }
898 kfree(p);
899 }
900 }
901
902 static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot)
903 {
904 int idx = rslot->number; /* remember this */
905 if (rslot->private_free)
906 rslot->private_free(rslot);
907 memset(rslot, 0, sizeof(*rslot));
908 rslot->number = idx;
909 }
910
911 /*
912 * build an OSS mixer element.
913 * ptr_allocated means the entry is dynamically allocated (change via proc file).
914 * when replace_old = 1, the old entry is replaced with the new one.
915 */
916 static int snd_mixer_oss_build_input(snd_mixer_oss_t *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
917 {
918 struct slot slot;
919 struct slot *pslot;
920 snd_kcontrol_t *kctl;
921 snd_mixer_oss_slot_t *rslot;
922 char str[64];
923
924 /* check if already assigned */
925 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
926 return 0;
927
928 memset(&slot, 0, sizeof(slot));
929 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
930 if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
931 SNDRV_MIXER_OSS_ITEM_GLOBAL))
932 return 0;
933 sprintf(str, "%s Switch", ptr->name);
934 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
935 SNDRV_MIXER_OSS_ITEM_GSWITCH))
936 return 0;
937 sprintf(str, "%s Route", ptr->name);
938 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
939 SNDRV_MIXER_OSS_ITEM_GROUTE))
940 return 0;
941 sprintf(str, "%s Volume", ptr->name);
942 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
943 SNDRV_MIXER_OSS_ITEM_GVOLUME))
944 return 0;
945 sprintf(str, "%s Playback Switch", ptr->name);
946 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
947 SNDRV_MIXER_OSS_ITEM_PSWITCH))
948 return 0;
949 sprintf(str, "%s Playback Route", ptr->name);
950 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
951 SNDRV_MIXER_OSS_ITEM_PROUTE))
952 return 0;
953 sprintf(str, "%s Playback Volume", ptr->name);
954 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
955 SNDRV_MIXER_OSS_ITEM_PVOLUME))
956 return 0;
957 sprintf(str, "%s Capture Switch", ptr->name);
958 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
959 SNDRV_MIXER_OSS_ITEM_CSWITCH))
960 return 0;
961 sprintf(str, "%s Capture Route", ptr->name);
962 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
963 SNDRV_MIXER_OSS_ITEM_CROUTE))
964 return 0;
965 sprintf(str, "%s Capture Volume", ptr->name);
966 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
967 SNDRV_MIXER_OSS_ITEM_CVOLUME))
968 return 0;
969 down_read(&mixer->card->controls_rwsem);
970 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
971 snd_ctl_elem_info_t *uinfo;
972
973 uinfo = kmalloc(sizeof(*uinfo), GFP_KERNEL);
974 if (! uinfo) {
975 up_read(&mixer->card->controls_rwsem);
976 return -ENOMEM;
977 }
978
979 memset(uinfo, 0, sizeof(*uinfo));
980 if (kctl->info(kctl, uinfo)) {
981 up_read(&mixer->card->controls_rwsem);
982 return 0;
983 }
984 strcpy(str, ptr->name);
985 if (!strcmp(str, "Master"))
986 strcpy(str, "Mix");
987 if (!strcmp(str, "Master Mono"))
988 strcpy(str, "Mix Mono");
989 slot.capture_item = 0;
990 if (!strcmp(uinfo->value.enumerated.name, str)) {
991 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
992 } else {
993 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
994 uinfo->value.enumerated.item = slot.capture_item;
995 if (kctl->info(kctl, uinfo)) {
996 up_read(&mixer->card->controls_rwsem);
997 return 0;
998 }
999 if (!strcmp(uinfo->value.enumerated.name, str)) {
1000 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1001 break;
1002 }
1003 }
1004 }
1005 kfree(uinfo);
1006 }
1007 up_read(&mixer->card->controls_rwsem);
1008 if (slot.present != 0) {
1009 pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL);
1010 snd_runtime_check(pslot != NULL, return -ENOMEM);
1011 *pslot = slot;
1012 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1013 pslot->assigned = ptr;
1014 pslot->allocated = ptr_allocated;
1015 rslot = &mixer->slots[ptr->oss_id];
1016 mixer_slot_clear(rslot);
1017 rslot->stereo = slot.channels > 1 ? 1 : 0;
1018 rslot->get_volume = snd_mixer_oss_get_volume1;
1019 rslot->put_volume = snd_mixer_oss_put_volume1;
1020 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1021 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1022 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1023 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1024 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1025 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1026 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1027 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1028 mixer->mask_recsrc |= 1 << ptr->oss_id;
1029 }
1030 rslot->private_data = pslot;
1031 rslot->private_free = snd_mixer_oss_slot_free;
1032 return 1;
1033 }
1034 return 0;
1035 }
1036
1037 /*
1038 */
1039 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1040 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1041 MIXER_VOL(VOLUME),
1042 MIXER_VOL(BASS),
1043 MIXER_VOL(TREBLE),
1044 MIXER_VOL(SYNTH),
1045 MIXER_VOL(PCM),
1046 MIXER_VOL(SPEAKER),
1047 MIXER_VOL(LINE),
1048 MIXER_VOL(MIC),
1049 MIXER_VOL(CD),
1050 MIXER_VOL(IMIX),
1051 MIXER_VOL(ALTPCM),
1052 MIXER_VOL(RECLEV),
1053 MIXER_VOL(IGAIN),
1054 MIXER_VOL(OGAIN),
1055 MIXER_VOL(LINE1),
1056 MIXER_VOL(LINE2),
1057 MIXER_VOL(LINE3),
1058 MIXER_VOL(DIGITAL1),
1059 MIXER_VOL(DIGITAL2),
1060 MIXER_VOL(DIGITAL3),
1061 MIXER_VOL(PHONEIN),
1062 MIXER_VOL(PHONEOUT),
1063 MIXER_VOL(VIDEO),
1064 MIXER_VOL(RADIO),
1065 MIXER_VOL(MONITOR),
1066 };
1067
1068 /*
1069 * /proc interface
1070 */
1071
1072 static void snd_mixer_oss_proc_read(snd_info_entry_t *entry,
1073 snd_info_buffer_t * buffer)
1074 {
1075 snd_mixer_oss_t *mixer = entry->private_data;
1076 int i;
1077
1078 down(&mixer->reg_mutex);
1079 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1080 struct slot *p;
1081
1082 if (! oss_mixer_names[i])
1083 continue;
1084 p = (struct slot *)mixer->slots[i].private_data;
1085 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1086 if (p && p->assigned)
1087 snd_iprintf(buffer, "\"%s\" %d\n",
1088 p->assigned->name,
1089 p->assigned->index);
1090 else
1091 snd_iprintf(buffer, "\"\" 0\n");
1092 }
1093 up(&mixer->reg_mutex);
1094 }
1095
1096 static void snd_mixer_oss_proc_write(snd_info_entry_t *entry,
1097 snd_info_buffer_t * buffer)
1098 {
1099 snd_mixer_oss_t *mixer = entry->private_data;
1100 char line[128], str[32], idxstr[16], *cptr;
1101 int ch, idx;
1102 struct snd_mixer_oss_assign_table *tbl;
1103 struct slot *slot;
1104
1105 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1106 cptr = snd_info_get_str(str, line, sizeof(str));
1107 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1108 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1109 break;
1110 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1111 snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1112 continue;
1113 }
1114 cptr = snd_info_get_str(str, cptr, sizeof(str));
1115 if (! *str) {
1116 /* remove the entry */
1117 down(&mixer->reg_mutex);
1118 mixer_slot_clear(&mixer->slots[ch]);
1119 up(&mixer->reg_mutex);
1120 continue;
1121 }
1122 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1123 idx = simple_strtoul(idxstr, NULL, 10);
1124 if (idx >= 0x4000) { /* too big */
1125 snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1126 continue;
1127 }
1128 down(&mixer->reg_mutex);
1129 slot = (struct slot *)mixer->slots[ch].private_data;
1130 if (slot && slot->assigned &&
1131 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1132 /* not changed */
1133 goto __unlock;
1134 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1135 if (! tbl) {
1136 snd_printk(KERN_ERR "mixer_oss: no memory\n");
1137 goto __unlock;
1138 }
1139 tbl->oss_id = ch;
1140 tbl->name = snd_kmalloc_strdup(str, GFP_KERNEL);
1141 if (! tbl->name) {
1142 kfree(tbl);
1143 goto __unlock;
1144 }
1145 tbl->index = idx;
1146 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1147 kfree(tbl->name);
1148 kfree(tbl);
1149 }
1150 __unlock:
1151 up(&mixer->reg_mutex);
1152 }
1153 }
1154
1155 static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer)
1156 {
1157 snd_info_entry_t *entry;
1158
1159 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1160 mixer->card->proc_root);
1161 if (! entry)
1162 return;
1163 entry->content = SNDRV_INFO_CONTENT_TEXT;
1164 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1165 entry->c.text.read_size = 8192;
1166 entry->c.text.read = snd_mixer_oss_proc_read;
1167 entry->c.text.write_size = 8192;
1168 entry->c.text.write = snd_mixer_oss_proc_write;
1169 entry->private_data = mixer;
1170 if (snd_info_register(entry) < 0) {
1171 snd_info_free_entry(entry);
1172 entry = NULL;
1173 }
1174 mixer->proc_entry = entry;
1175 }
1176
1177 static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer)
1178 {
1179 if (mixer->proc_entry) {
1180 snd_info_unregister(mixer->proc_entry);
1181 mixer->proc_entry = NULL;
1182 }
1183 }
1184
1185 static void snd_mixer_oss_build(snd_mixer_oss_t *mixer)
1186 {
1187 static struct snd_mixer_oss_assign_table table[] = {
1188 { SOUND_MIXER_VOLUME, "Master", 0 },
1189 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1190 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1191 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1192 { SOUND_MIXER_SYNTH, "Synth", 0 },
1193 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1194 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1195 { SOUND_MIXER_PCM, "PCM", 0 },
1196 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 },
1197 { SOUND_MIXER_LINE, "Line", 0 },
1198 { SOUND_MIXER_MIC, "Mic", 0 },
1199 { SOUND_MIXER_CD, "CD", 0 },
1200 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1201 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1202 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1203 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1204 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1205 { SOUND_MIXER_IGAIN, "Capture", 0 },
1206 { SOUND_MIXER_OGAIN, "Playback", 0 },
1207 { SOUND_MIXER_LINE1, "Aux", 0 },
1208 { SOUND_MIXER_LINE2, "Aux", 1 },
1209 { SOUND_MIXER_LINE3, "Aux", 2 },
1210 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1211 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1212 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1213 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1214 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1215 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1216 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1217 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1218 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1219 { SOUND_MIXER_VIDEO, "Video", 0 },
1220 { SOUND_MIXER_RADIO, "Radio", 0 },
1221 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1222 };
1223 unsigned int idx;
1224
1225 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1226 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1227 if (mixer->mask_recsrc) {
1228 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1229 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1230 }
1231 }
1232
1233 /*
1234 *
1235 */
1236
1237 static int snd_mixer_oss_free1(void *private)
1238 {
1239 snd_mixer_oss_t *mixer = private;
1240 snd_card_t * card;
1241 int idx;
1242
1243 snd_assert(mixer != NULL, return -ENXIO);
1244 card = mixer->card;
1245 snd_assert(mixer == card->mixer_oss, return -ENXIO);
1246 card->mixer_oss = NULL;
1247 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1248 snd_mixer_oss_slot_t *chn = &mixer->slots[idx];
1249 if (chn->private_free)
1250 chn->private_free(chn);
1251 }
1252 kfree(mixer);
1253 return 0;
1254 }
1255
1256 static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd)
1257 {
1258 snd_mixer_oss_t *mixer;
1259
1260 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1261 char name[128];
1262 int idx, err;
1263
1264 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1265 if (mixer == NULL)
1266 return -ENOMEM;
1267 init_MUTEX(&mixer->reg_mutex);
1268 sprintf(name, "mixer%i%i", card->number, 0);
1269 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1270 card, 0,
1271 &snd_mixer_oss_reg,
1272 name)) < 0) {
1273 snd_printk("unable to register OSS mixer device %i:%i\n", card->number, 0);
1274 kfree(mixer);
1275 return err;
1276 }
1277 mixer->oss_dev_alloc = 1;
1278 mixer->card = card;
1279 if (*card->mixername)
1280 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1281 else
1282 strlcpy(mixer->name, name, sizeof(mixer->name));
1283 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1284 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1285 card->number,
1286 mixer->name);
1287 #endif
1288 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1289 mixer->slots[idx].number = idx;
1290 card->mixer_oss = mixer;
1291 snd_mixer_oss_build(mixer);
1292 snd_mixer_oss_proc_init(mixer);
1293 } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) {
1294 mixer = card->mixer_oss;
1295 if (mixer == NULL || !mixer->oss_dev_alloc)
1296 return 0;
1297 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1298 mixer->oss_dev_alloc = 0;
1299 } else { /* free */
1300 mixer = card->mixer_oss;
1301 if (mixer == NULL)
1302 return 0;
1303 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1304 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1305 #endif
1306 if (mixer->oss_dev_alloc)
1307 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1308 snd_mixer_oss_proc_done(mixer);
1309 return snd_mixer_oss_free1(mixer);
1310 }
1311 return 0;
1312 }
1313
1314 static int __init alsa_mixer_oss_init(void)
1315 {
1316 int idx;
1317
1318 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1319 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1320 if (snd_cards[idx])
1321 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1322 }
1323 return 0;
1324 }
1325
1326 static void __exit alsa_mixer_oss_exit(void)
1327 {
1328 int idx;
1329
1330 snd_mixer_oss_notify_callback = NULL;
1331 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1332 if (snd_cards[idx])
1333 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1334 }
1335 }
1336
1337 module_init(alsa_mixer_oss_init)
1338 module_exit(alsa_mixer_oss_exit)
1339
1340 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
Linux kernel - Deliverables
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