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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * OSS emulation layer for the mixer interface
4 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
5 */
6
7#include <linux/init.h>
8#include <linux/slab.h>
9#include <linux/time.h>
10#include <linux/string.h>
11#include <linux/module.h>
12#include <linux/compat.h>
13#include <sound/core.h>
14#include <sound/minors.h>
15#include <sound/control.h>
16#include <sound/info.h>
17#include <sound/mixer_oss.h>
18#include <linux/soundcard.h>
19
20#define OSS_ALSAEMULVER _SIOR ('M', 249, int)
21
22MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
23MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
24MODULE_LICENSE("GPL");
25MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
26
27static int snd_mixer_oss_open(struct inode *inode, struct file *file)
28{
29 struct snd_card *card;
30 struct snd_mixer_oss_file *fmixer;
31 int err;
32
33 err = nonseekable_open(inode, file);
34 if (err < 0)
35 return err;
36
37 card = snd_lookup_oss_minor_data(iminor(inode),
38 SNDRV_OSS_DEVICE_TYPE_MIXER);
39 if (card == NULL)
40 return -ENODEV;
41 if (card->mixer_oss == NULL) {
42 snd_card_unref(card);
43 return -ENODEV;
44 }
45 err = snd_card_file_add(card, file);
46 if (err < 0) {
47 snd_card_unref(card);
48 return err;
49 }
50 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
51 if (fmixer == NULL) {
52 snd_card_file_remove(card, file);
53 snd_card_unref(card);
54 return -ENOMEM;
55 }
56 fmixer->card = card;
57 fmixer->mixer = card->mixer_oss;
58 file->private_data = fmixer;
59 if (!try_module_get(card->module)) {
60 kfree(fmixer);
61 snd_card_file_remove(card, file);
62 snd_card_unref(card);
63 return -EFAULT;
64 }
65 snd_card_unref(card);
66 return 0;
67}
68
69static int snd_mixer_oss_release(struct inode *inode, struct file *file)
70{
71 struct snd_mixer_oss_file *fmixer;
72
73 if (file->private_data) {
74 fmixer = file->private_data;
75 module_put(fmixer->card->module);
76 snd_card_file_remove(fmixer->card, file);
77 kfree(fmixer);
78 }
79 return 0;
80}
81
82static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
83 mixer_info __user *_info)
84{
85 struct snd_card *card = fmixer->card;
86 struct snd_mixer_oss *mixer = fmixer->mixer;
87 struct mixer_info info;
88
89 memset(&info, 0, sizeof(info));
90 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
91 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
92 info.modify_counter = card->mixer_oss_change_count;
93 if (copy_to_user(_info, &info, sizeof(info)))
94 return -EFAULT;
95 return 0;
96}
97
98static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
99 _old_mixer_info __user *_info)
100{
101 struct snd_card *card = fmixer->card;
102 struct snd_mixer_oss *mixer = fmixer->mixer;
103 _old_mixer_info info;
104
105 memset(&info, 0, sizeof(info));
106 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
107 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
108 if (copy_to_user(_info, &info, sizeof(info)))
109 return -EFAULT;
110 return 0;
111}
112
113static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
114{
115 struct snd_mixer_oss *mixer = fmixer->mixer;
116 int result = 0;
117
118 if (mixer == NULL)
119 return -EIO;
120 if (mixer->get_recsrc && mixer->put_recsrc)
121 result |= SOUND_CAP_EXCL_INPUT;
122 return result;
123}
124
125static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
126{
127 struct snd_mixer_oss *mixer = fmixer->mixer;
128 struct snd_mixer_oss_slot *pslot;
129 int result = 0, chn;
130
131 if (mixer == NULL)
132 return -EIO;
133 for (chn = 0; chn < 31; chn++) {
134 pslot = &mixer->slots[chn];
135 if (pslot->put_volume || pslot->put_recsrc)
136 result |= 1 << chn;
137 }
138 return result;
139}
140
141static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
142{
143 struct snd_mixer_oss *mixer = fmixer->mixer;
144 struct snd_mixer_oss_slot *pslot;
145 int result = 0, chn;
146
147 if (mixer == NULL)
148 return -EIO;
149 for (chn = 0; chn < 31; chn++) {
150 pslot = &mixer->slots[chn];
151 if (pslot->put_volume && pslot->stereo)
152 result |= 1 << chn;
153 }
154 return result;
155}
156
157static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
158{
159 struct snd_mixer_oss *mixer = fmixer->mixer;
160 int result = 0;
161
162 if (mixer == NULL)
163 return -EIO;
164 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
165 result = mixer->mask_recsrc;
166 } else {
167 struct snd_mixer_oss_slot *pslot;
168 int chn;
169 for (chn = 0; chn < 31; chn++) {
170 pslot = &mixer->slots[chn];
171 if (pslot->put_recsrc)
172 result |= 1 << chn;
173 }
174 }
175 return result;
176}
177
178static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
179{
180 struct snd_mixer_oss *mixer = fmixer->mixer;
181 int result = 0;
182
183 if (mixer == NULL)
184 return -EIO;
185 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
186 int err;
187 unsigned int index;
188 if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
189 return err;
190 result = 1 << index;
191 } else {
192 struct snd_mixer_oss_slot *pslot;
193 int chn;
194 for (chn = 0; chn < 31; chn++) {
195 pslot = &mixer->slots[chn];
196 if (pslot->get_recsrc) {
197 int active = 0;
198 pslot->get_recsrc(fmixer, pslot, &active);
199 if (active)
200 result |= 1 << chn;
201 }
202 }
203 }
204 return mixer->oss_recsrc = result;
205}
206
207static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
208{
209 struct snd_mixer_oss *mixer = fmixer->mixer;
210 struct snd_mixer_oss_slot *pslot;
211 int chn, active;
212 unsigned int index;
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, &index);
222 result = 1 << index;
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
245static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
246{
247 struct snd_mixer_oss *mixer = fmixer->mixer;
248 struct snd_mixer_oss_slot *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 if (snd_BUG_ON(left < 0 || left > 100))
261 return -EIO;
262 if (snd_BUG_ON(right < 0 || right > 100))
263 return -EIO;
264 if (result >= 0) {
265 pslot->volume[0] = left;
266 pslot->volume[1] = right;
267 result = (left & 0xff) | ((right & 0xff) << 8);
268 }
269 return result;
270}
271
272static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
273 int slot, int volume)
274{
275 struct snd_mixer_oss *mixer = fmixer->mixer;
276 struct snd_mixer_oss_slot *pslot;
277 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
278
279 if (mixer == NULL || slot > 30)
280 return -EIO;
281 pslot = &mixer->slots[slot];
282 if (left > 100)
283 left = 100;
284 if (right > 100)
285 right = 100;
286 if (!pslot->stereo)
287 right = left;
288 if (pslot->put_volume)
289 result = pslot->put_volume(fmixer, pslot, left, right);
290 if (result < 0)
291 return result;
292 pslot->volume[0] = left;
293 pslot->volume[1] = right;
294 return (left & 0xff) | ((right & 0xff) << 8);
295}
296
297static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
298{
299 void __user *argp = (void __user *)arg;
300 int __user *p = argp;
301 int tmp;
302
303 if (snd_BUG_ON(!fmixer))
304 return -ENXIO;
305 if (((cmd >> 8) & 0xff) == 'M') {
306 switch (cmd) {
307 case SOUND_MIXER_INFO:
308 return snd_mixer_oss_info(fmixer, argp);
309 case SOUND_OLD_MIXER_INFO:
310 return snd_mixer_oss_info_obsolete(fmixer, argp);
311 case SOUND_MIXER_WRITE_RECSRC:
312 if (get_user(tmp, p))
313 return -EFAULT;
314 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
315 if (tmp < 0)
316 return tmp;
317 return put_user(tmp, p);
318 case OSS_GETVERSION:
319 return put_user(SNDRV_OSS_VERSION, p);
320 case OSS_ALSAEMULVER:
321 return put_user(1, p);
322 case SOUND_MIXER_READ_DEVMASK:
323 tmp = snd_mixer_oss_devmask(fmixer);
324 if (tmp < 0)
325 return tmp;
326 return put_user(tmp, p);
327 case SOUND_MIXER_READ_STEREODEVS:
328 tmp = snd_mixer_oss_stereodevs(fmixer);
329 if (tmp < 0)
330 return tmp;
331 return put_user(tmp, p);
332 case SOUND_MIXER_READ_RECMASK:
333 tmp = snd_mixer_oss_recmask(fmixer);
334 if (tmp < 0)
335 return tmp;
336 return put_user(tmp, p);
337 case SOUND_MIXER_READ_CAPS:
338 tmp = snd_mixer_oss_caps(fmixer);
339 if (tmp < 0)
340 return tmp;
341 return put_user(tmp, p);
342 case SOUND_MIXER_READ_RECSRC:
343 tmp = snd_mixer_oss_get_recsrc(fmixer);
344 if (tmp < 0)
345 return tmp;
346 return put_user(tmp, p);
347 }
348 }
349 if (cmd & SIOC_IN) {
350 if (get_user(tmp, p))
351 return -EFAULT;
352 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
353 if (tmp < 0)
354 return tmp;
355 return put_user(tmp, p);
356 } else if (cmd & SIOC_OUT) {
357 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
358 if (tmp < 0)
359 return tmp;
360 return put_user(tmp, p);
361 }
362 return -ENXIO;
363}
364
365static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
366{
367 return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
368}
369
370int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
371{
372 struct snd_mixer_oss_file fmixer;
373
374 if (snd_BUG_ON(!card))
375 return -ENXIO;
376 if (card->mixer_oss == NULL)
377 return -ENXIO;
378 memset(&fmixer, 0, sizeof(fmixer));
379 fmixer.card = card;
380 fmixer.mixer = card->mixer_oss;
381 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
382}
383EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
384
385#ifdef CONFIG_COMPAT
386/* all compatible */
387static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd,
388 unsigned long arg)
389{
390 return snd_mixer_oss_ioctl1(file->private_data, cmd,
391 (unsigned long)compat_ptr(arg));
392}
393#else
394#define snd_mixer_oss_ioctl_compat NULL
395#endif
396
397/*
398 * REGISTRATION PART
399 */
400
401static const struct file_operations snd_mixer_oss_f_ops =
402{
403 .owner = THIS_MODULE,
404 .open = snd_mixer_oss_open,
405 .release = snd_mixer_oss_release,
406 .llseek = no_llseek,
407 .unlocked_ioctl = snd_mixer_oss_ioctl,
408 .compat_ioctl = snd_mixer_oss_ioctl_compat,
409};
410
411/*
412 * utilities
413 */
414
415static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
416{
417 long orange = omax - omin, nrange = nmax - nmin;
418
419 if (orange == 0)
420 return 0;
421 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
422}
423
424/* convert from alsa native to oss values (0-100) */
425static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
426{
427 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
428 return *old;
429 return snd_mixer_oss_conv(val, min, max, 0, 100);
430}
431
432/* convert from oss to alsa native values */
433static long snd_mixer_oss_conv2(long val, long min, long max)
434{
435 return snd_mixer_oss_conv(val, 0, 100, min, max);
436}
437
438#if 0
439static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
440{
441 struct snd_mixer_oss *mixer = card->mixer_oss;
442 if (mixer)
443 mixer->mask_recsrc |= 1 << slot;
444}
445
446static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
447{
448 struct snd_mixer_oss *mixer = card->mixer_oss;
449 if (mixer && (mixer->mask_recsrc & (1 << slot)))
450 return 1;
451 return 0;
452}
453#endif
454
455#define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
456
457#define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
458#define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
459#define SNDRV_MIXER_OSS_ITEM_GROUTE 2
460#define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
461#define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
462#define SNDRV_MIXER_OSS_ITEM_PROUTE 5
463#define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
464#define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
465#define SNDRV_MIXER_OSS_ITEM_CROUTE 8
466#define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
467#define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
468
469#define SNDRV_MIXER_OSS_ITEM_COUNT 11
470
471#define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
472#define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
473#define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
474#define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
475#define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
476#define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
477#define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
478#define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
479#define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
480#define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
481#define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
482
483struct slot {
484 unsigned int signature;
485 unsigned int present;
486 unsigned int channels;
487 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
488 unsigned int capture_item;
489 struct snd_mixer_oss_assign_table *assigned;
490 unsigned int allocated: 1;
491};
492
493#define ID_UNKNOWN ((unsigned int)-1)
494
495static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
496{
497 struct snd_card *card = mixer->card;
498 struct snd_ctl_elem_id id;
499
500 memset(&id, 0, sizeof(id));
501 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
502 strlcpy(id.name, name, sizeof(id.name));
503 id.index = index;
504 return snd_ctl_find_id(card, &id);
505}
506
507static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
508 struct snd_mixer_oss_slot *pslot,
509 unsigned int numid,
510 int *left, int *right)
511{
512 struct snd_ctl_elem_info *uinfo;
513 struct snd_ctl_elem_value *uctl;
514 struct snd_kcontrol *kctl;
515 struct snd_card *card = fmixer->card;
516
517 if (numid == ID_UNKNOWN)
518 return;
519 down_read(&card->controls_rwsem);
520 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
521 up_read(&card->controls_rwsem);
522 return;
523 }
524 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
525 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
526 if (uinfo == NULL || uctl == NULL)
527 goto __unalloc;
528 if (kctl->info(kctl, uinfo))
529 goto __unalloc;
530 if (kctl->get(kctl, uctl))
531 goto __unalloc;
532 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
533 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
534 goto __unalloc;
535 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
536 if (uinfo->count > 1)
537 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
538 __unalloc:
539 up_read(&card->controls_rwsem);
540 kfree(uctl);
541 kfree(uinfo);
542}
543
544static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
545 struct snd_mixer_oss_slot *pslot,
546 unsigned int numid,
547 int *left, int *right,
548 int route)
549{
550 struct snd_ctl_elem_info *uinfo;
551 struct snd_ctl_elem_value *uctl;
552 struct snd_kcontrol *kctl;
553 struct snd_card *card = fmixer->card;
554
555 if (numid == ID_UNKNOWN)
556 return;
557 down_read(&card->controls_rwsem);
558 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
559 up_read(&card->controls_rwsem);
560 return;
561 }
562 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
563 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
564 if (uinfo == NULL || uctl == NULL)
565 goto __unalloc;
566 if (kctl->info(kctl, uinfo))
567 goto __unalloc;
568 if (kctl->get(kctl, uctl))
569 goto __unalloc;
570 if (!uctl->value.integer.value[0]) {
571 *left = 0;
572 if (uinfo->count == 1)
573 *right = 0;
574 }
575 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
576 *right = 0;
577 __unalloc:
578 up_read(&card->controls_rwsem);
579 kfree(uctl);
580 kfree(uinfo);
581}
582
583static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
584 struct snd_mixer_oss_slot *pslot,
585 int *left, int *right)
586{
587 struct slot *slot = pslot->private_data;
588
589 *left = *right = 100;
590 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
591 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
592 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
593 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
594 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
595 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
596 }
597 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
598 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
599 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
600 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
601 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
602 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
603 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
604 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
605 }
606 return 0;
607}
608
609static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
610 struct snd_mixer_oss_slot *pslot,
611 unsigned int numid,
612 int left, int right)
613{
614 struct snd_ctl_elem_info *uinfo;
615 struct snd_ctl_elem_value *uctl;
616 struct snd_kcontrol *kctl;
617 struct snd_card *card = fmixer->card;
618 int res;
619
620 if (numid == ID_UNKNOWN)
621 return;
622 down_read(&card->controls_rwsem);
623 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
624 up_read(&card->controls_rwsem);
625 return;
626 }
627 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
628 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
629 if (uinfo == NULL || uctl == NULL)
630 goto __unalloc;
631 if (kctl->info(kctl, uinfo))
632 goto __unalloc;
633 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
634 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
635 goto __unalloc;
636 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
637 if (uinfo->count > 1)
638 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
639 if ((res = kctl->put(kctl, uctl)) < 0)
640 goto __unalloc;
641 if (res > 0)
642 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
643 __unalloc:
644 up_read(&card->controls_rwsem);
645 kfree(uctl);
646 kfree(uinfo);
647}
648
649static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
650 struct snd_mixer_oss_slot *pslot,
651 unsigned int numid,
652 int left, int right,
653 int route)
654{
655 struct snd_ctl_elem_info *uinfo;
656 struct snd_ctl_elem_value *uctl;
657 struct snd_kcontrol *kctl;
658 struct snd_card *card = fmixer->card;
659 int res;
660
661 if (numid == ID_UNKNOWN)
662 return;
663 down_read(&card->controls_rwsem);
664 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
665 up_read(&card->controls_rwsem);
666 return;
667 }
668 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
669 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
670 if (uinfo == NULL || uctl == NULL)
671 goto __unalloc;
672 if (kctl->info(kctl, uinfo))
673 goto __unalloc;
674 if (uinfo->count > 1) {
675 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
676 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
677 if (route) {
678 uctl->value.integer.value[1] =
679 uctl->value.integer.value[2] = 0;
680 }
681 } else {
682 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
683 }
684 if ((res = kctl->put(kctl, uctl)) < 0)
685 goto __unalloc;
686 if (res > 0)
687 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
688 __unalloc:
689 up_read(&card->controls_rwsem);
690 kfree(uctl);
691 kfree(uinfo);
692}
693
694static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
695 struct snd_mixer_oss_slot *pslot,
696 int left, int right)
697{
698 struct slot *slot = pslot->private_data;
699
700 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
701 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
702 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
703 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
704 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
705 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
706 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
707 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
708 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
709 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
710 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
711 }
712 if (left || right) {
713 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
714 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
715 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
716 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
717 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
718 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
719 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
720 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
721 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
722 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
723 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
724 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
725 } else {
726 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
727 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
728 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
729 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
730 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
731 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
732 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
733 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
734 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
735 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
736 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
737 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
738 }
739 }
740 return 0;
741}
742
743static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
744 struct snd_mixer_oss_slot *pslot,
745 int *active)
746{
747 struct slot *slot = pslot->private_data;
748 int left, right;
749
750 left = right = 1;
751 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
752 *active = (left || right) ? 1 : 0;
753 return 0;
754}
755
756static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
757 struct snd_mixer_oss_slot *pslot,
758 int *active)
759{
760 struct slot *slot = pslot->private_data;
761 int left, right;
762
763 left = right = 1;
764 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
765 *active = (left || right) ? 1 : 0;
766 return 0;
767}
768
769static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
770 struct snd_mixer_oss_slot *pslot,
771 int active)
772{
773 struct slot *slot = pslot->private_data;
774
775 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
776 return 0;
777}
778
779static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
780 struct snd_mixer_oss_slot *pslot,
781 int active)
782{
783 struct slot *slot = pslot->private_data;
784
785 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
786 return 0;
787}
788
789static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
790{
791 struct snd_card *card = fmixer->card;
792 struct snd_mixer_oss *mixer = fmixer->mixer;
793 struct snd_kcontrol *kctl;
794 struct snd_mixer_oss_slot *pslot;
795 struct slot *slot;
796 struct snd_ctl_elem_info *uinfo;
797 struct snd_ctl_elem_value *uctl;
798 int err, idx;
799
800 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
801 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
802 if (uinfo == NULL || uctl == NULL) {
803 err = -ENOMEM;
804 goto __free_only;
805 }
806 down_read(&card->controls_rwsem);
807 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
808 if (! kctl) {
809 err = -ENOENT;
810 goto __unlock;
811 }
812 if ((err = kctl->info(kctl, uinfo)) < 0)
813 goto __unlock;
814 if ((err = kctl->get(kctl, uctl)) < 0)
815 goto __unlock;
816 for (idx = 0; idx < 32; idx++) {
817 if (!(mixer->mask_recsrc & (1 << idx)))
818 continue;
819 pslot = &mixer->slots[idx];
820 slot = pslot->private_data;
821 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
822 continue;
823 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
824 continue;
825 if (slot->capture_item == uctl->value.enumerated.item[0]) {
826 *active_index = idx;
827 break;
828 }
829 }
830 err = 0;
831 __unlock:
832 up_read(&card->controls_rwsem);
833 __free_only:
834 kfree(uctl);
835 kfree(uinfo);
836 return err;
837}
838
839static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
840{
841 struct snd_card *card = fmixer->card;
842 struct snd_mixer_oss *mixer = fmixer->mixer;
843 struct snd_kcontrol *kctl;
844 struct snd_mixer_oss_slot *pslot;
845 struct slot *slot = NULL;
846 struct snd_ctl_elem_info *uinfo;
847 struct snd_ctl_elem_value *uctl;
848 int err;
849 unsigned int idx;
850
851 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
852 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
853 if (uinfo == NULL || uctl == NULL) {
854 err = -ENOMEM;
855 goto __free_only;
856 }
857 down_read(&card->controls_rwsem);
858 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
859 if (! kctl) {
860 err = -ENOENT;
861 goto __unlock;
862 }
863 if ((err = kctl->info(kctl, uinfo)) < 0)
864 goto __unlock;
865 for (idx = 0; idx < 32; idx++) {
866 if (!(mixer->mask_recsrc & (1 << idx)))
867 continue;
868 pslot = &mixer->slots[idx];
869 slot = pslot->private_data;
870 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
871 continue;
872 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
873 continue;
874 if (idx == active_index)
875 break;
876 slot = NULL;
877 }
878 if (! slot)
879 goto __unlock;
880 for (idx = 0; idx < uinfo->count; idx++)
881 uctl->value.enumerated.item[idx] = slot->capture_item;
882 err = kctl->put(kctl, uctl);
883 if (err > 0)
884 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
885 err = 0;
886 __unlock:
887 up_read(&card->controls_rwsem);
888 __free_only:
889 kfree(uctl);
890 kfree(uinfo);
891 return err;
892}
893
894struct snd_mixer_oss_assign_table {
895 int oss_id;
896 const char *name;
897 int index;
898};
899
900static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
901{
902 struct snd_ctl_elem_info *info;
903 struct snd_kcontrol *kcontrol;
904 struct snd_card *card = mixer->card;
905 int err;
906
907 down_read(&card->controls_rwsem);
908 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
909 if (kcontrol == NULL) {
910 up_read(&card->controls_rwsem);
911 return 0;
912 }
913 info = kmalloc(sizeof(*info), GFP_KERNEL);
914 if (! info) {
915 up_read(&card->controls_rwsem);
916 return -ENOMEM;
917 }
918 if ((err = kcontrol->info(kcontrol, info)) < 0) {
919 up_read(&card->controls_rwsem);
920 kfree(info);
921 return err;
922 }
923 slot->numid[item] = kcontrol->id.numid;
924 up_read(&card->controls_rwsem);
925 if (info->count > slot->channels)
926 slot->channels = info->count;
927 slot->present |= 1 << item;
928 kfree(info);
929 return 0;
930}
931
932static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
933{
934 struct slot *p = chn->private_data;
935 if (p) {
936 if (p->allocated && p->assigned) {
937 kfree(p->assigned->name);
938 kfree(p->assigned);
939 }
940 kfree(p);
941 }
942}
943
944static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
945{
946 int idx = rslot->number; /* remember this */
947 if (rslot->private_free)
948 rslot->private_free(rslot);
949 memset(rslot, 0, sizeof(*rslot));
950 rslot->number = idx;
951}
952
953/* In a separate function to keep gcc 3.2 happy - do NOT merge this in
954 snd_mixer_oss_build_input! */
955static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
956 struct snd_mixer_oss_assign_table *ptr,
957 struct slot *slot)
958{
959 char str[64];
960 int err;
961
962 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
963 SNDRV_MIXER_OSS_ITEM_GLOBAL);
964 if (err)
965 return err;
966 sprintf(str, "%s Switch", ptr->name);
967 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
968 SNDRV_MIXER_OSS_ITEM_GSWITCH);
969 if (err)
970 return err;
971 sprintf(str, "%s Route", ptr->name);
972 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
973 SNDRV_MIXER_OSS_ITEM_GROUTE);
974 if (err)
975 return err;
976 sprintf(str, "%s Volume", ptr->name);
977 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
978 SNDRV_MIXER_OSS_ITEM_GVOLUME);
979 if (err)
980 return err;
981 sprintf(str, "%s Playback Switch", ptr->name);
982 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
983 SNDRV_MIXER_OSS_ITEM_PSWITCH);
984 if (err)
985 return err;
986 sprintf(str, "%s Playback Route", ptr->name);
987 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
988 SNDRV_MIXER_OSS_ITEM_PROUTE);
989 if (err)
990 return err;
991 sprintf(str, "%s Playback Volume", ptr->name);
992 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
993 SNDRV_MIXER_OSS_ITEM_PVOLUME);
994 if (err)
995 return err;
996 sprintf(str, "%s Capture Switch", ptr->name);
997 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
998 SNDRV_MIXER_OSS_ITEM_CSWITCH);
999 if (err)
1000 return err;
1001 sprintf(str, "%s Capture Route", ptr->name);
1002 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1003 SNDRV_MIXER_OSS_ITEM_CROUTE);
1004 if (err)
1005 return err;
1006 sprintf(str, "%s Capture Volume", ptr->name);
1007 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1008 SNDRV_MIXER_OSS_ITEM_CVOLUME);
1009 if (err)
1010 return err;
1011
1012 return 0;
1013}
1014
1015/*
1016 * build an OSS mixer element.
1017 * ptr_allocated means the entry is dynamically allocated (change via proc file).
1018 * when replace_old = 1, the old entry is replaced with the new one.
1019 */
1020static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
1021{
1022 struct slot slot;
1023 struct slot *pslot;
1024 struct snd_kcontrol *kctl;
1025 struct snd_mixer_oss_slot *rslot;
1026 char str[64];
1027
1028 /* check if already assigned */
1029 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1030 return 0;
1031
1032 memset(&slot, 0, sizeof(slot));
1033 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1034 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1035 return 0;
1036 down_read(&mixer->card->controls_rwsem);
1037 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1038 struct snd_ctl_elem_info *uinfo;
1039
1040 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1041 if (! uinfo) {
1042 up_read(&mixer->card->controls_rwsem);
1043 return -ENOMEM;
1044 }
1045
1046 if (kctl->info(kctl, uinfo)) {
1047 up_read(&mixer->card->controls_rwsem);
1048 kfree(uinfo);
1049 return 0;
1050 }
1051 strcpy(str, ptr->name);
1052 if (!strcmp(str, "Master"))
1053 strcpy(str, "Mix");
1054 if (!strcmp(str, "Master Mono"))
1055 strcpy(str, "Mix Mono");
1056 slot.capture_item = 0;
1057 if (!strcmp(uinfo->value.enumerated.name, str)) {
1058 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1059 } else {
1060 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1061 uinfo->value.enumerated.item = slot.capture_item;
1062 if (kctl->info(kctl, uinfo)) {
1063 up_read(&mixer->card->controls_rwsem);
1064 kfree(uinfo);
1065 return 0;
1066 }
1067 if (!strcmp(uinfo->value.enumerated.name, str)) {
1068 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1069 break;
1070 }
1071 }
1072 }
1073 kfree(uinfo);
1074 }
1075 up_read(&mixer->card->controls_rwsem);
1076 if (slot.present != 0) {
1077 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1078 if (! pslot)
1079 return -ENOMEM;
1080 *pslot = slot;
1081 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1082 pslot->assigned = ptr;
1083 pslot->allocated = ptr_allocated;
1084 rslot = &mixer->slots[ptr->oss_id];
1085 mixer_slot_clear(rslot);
1086 rslot->stereo = slot.channels > 1 ? 1 : 0;
1087 rslot->get_volume = snd_mixer_oss_get_volume1;
1088 rslot->put_volume = snd_mixer_oss_put_volume1;
1089 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1090 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1091 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1092 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1093 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1094 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1095 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1096 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1097 mixer->mask_recsrc |= 1 << ptr->oss_id;
1098 }
1099 rslot->private_data = pslot;
1100 rslot->private_free = snd_mixer_oss_slot_free;
1101 return 1;
1102 }
1103 return 0;
1104}
1105
1106#ifdef CONFIG_SND_PROC_FS
1107/*
1108 */
1109#define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1110static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1111 MIXER_VOL(VOLUME),
1112 MIXER_VOL(BASS),
1113 MIXER_VOL(TREBLE),
1114 MIXER_VOL(SYNTH),
1115 MIXER_VOL(PCM),
1116 MIXER_VOL(SPEAKER),
1117 MIXER_VOL(LINE),
1118 MIXER_VOL(MIC),
1119 MIXER_VOL(CD),
1120 MIXER_VOL(IMIX),
1121 MIXER_VOL(ALTPCM),
1122 MIXER_VOL(RECLEV),
1123 MIXER_VOL(IGAIN),
1124 MIXER_VOL(OGAIN),
1125 MIXER_VOL(LINE1),
1126 MIXER_VOL(LINE2),
1127 MIXER_VOL(LINE3),
1128 MIXER_VOL(DIGITAL1),
1129 MIXER_VOL(DIGITAL2),
1130 MIXER_VOL(DIGITAL3),
1131 MIXER_VOL(PHONEIN),
1132 MIXER_VOL(PHONEOUT),
1133 MIXER_VOL(VIDEO),
1134 MIXER_VOL(RADIO),
1135 MIXER_VOL(MONITOR),
1136};
1137
1138/*
1139 * /proc interface
1140 */
1141
1142static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1143 struct snd_info_buffer *buffer)
1144{
1145 struct snd_mixer_oss *mixer = entry->private_data;
1146 int i;
1147
1148 mutex_lock(&mixer->reg_mutex);
1149 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1150 struct slot *p;
1151
1152 if (! oss_mixer_names[i])
1153 continue;
1154 p = (struct slot *)mixer->slots[i].private_data;
1155 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1156 if (p && p->assigned)
1157 snd_iprintf(buffer, "\"%s\" %d\n",
1158 p->assigned->name,
1159 p->assigned->index);
1160 else
1161 snd_iprintf(buffer, "\"\" 0\n");
1162 }
1163 mutex_unlock(&mixer->reg_mutex);
1164}
1165
1166static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1167 struct snd_info_buffer *buffer)
1168{
1169 struct snd_mixer_oss *mixer = entry->private_data;
1170 char line[128], str[32], idxstr[16];
1171 const char *cptr;
1172 unsigned int idx;
1173 int ch;
1174 struct snd_mixer_oss_assign_table *tbl;
1175 struct slot *slot;
1176
1177 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1178 cptr = snd_info_get_str(str, line, sizeof(str));
1179 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1180 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1181 break;
1182 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1183 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1184 str);
1185 continue;
1186 }
1187 cptr = snd_info_get_str(str, cptr, sizeof(str));
1188 if (! *str) {
1189 /* remove the entry */
1190 mutex_lock(&mixer->reg_mutex);
1191 mixer_slot_clear(&mixer->slots[ch]);
1192 mutex_unlock(&mixer->reg_mutex);
1193 continue;
1194 }
1195 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1196 idx = simple_strtoul(idxstr, NULL, 10);
1197 if (idx >= 0x4000) { /* too big */
1198 pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
1199 continue;
1200 }
1201 mutex_lock(&mixer->reg_mutex);
1202 slot = (struct slot *)mixer->slots[ch].private_data;
1203 if (slot && slot->assigned &&
1204 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1205 /* not changed */
1206 goto __unlock;
1207 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1208 if (!tbl)
1209 goto __unlock;
1210 tbl->oss_id = ch;
1211 tbl->name = kstrdup(str, GFP_KERNEL);
1212 if (! tbl->name) {
1213 kfree(tbl);
1214 goto __unlock;
1215 }
1216 tbl->index = idx;
1217 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1218 kfree(tbl->name);
1219 kfree(tbl);
1220 }
1221 __unlock:
1222 mutex_unlock(&mixer->reg_mutex);
1223 }
1224}
1225
1226static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1227{
1228 struct snd_info_entry *entry;
1229
1230 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1231 mixer->card->proc_root);
1232 if (! entry)
1233 return;
1234 entry->content = SNDRV_INFO_CONTENT_TEXT;
1235 entry->mode = S_IFREG | 0644;
1236 entry->c.text.read = snd_mixer_oss_proc_read;
1237 entry->c.text.write = snd_mixer_oss_proc_write;
1238 entry->private_data = mixer;
1239 if (snd_info_register(entry) < 0) {
1240 snd_info_free_entry(entry);
1241 entry = NULL;
1242 }
1243 mixer->proc_entry = entry;
1244}
1245
1246static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1247{
1248 snd_info_free_entry(mixer->proc_entry);
1249 mixer->proc_entry = NULL;
1250}
1251#else /* !CONFIG_SND_PROC_FS */
1252#define snd_mixer_oss_proc_init(mix)
1253#define snd_mixer_oss_proc_done(mix)
1254#endif /* CONFIG_SND_PROC_FS */
1255
1256static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1257{
1258 static struct snd_mixer_oss_assign_table table[] = {
1259 { SOUND_MIXER_VOLUME, "Master", 0 },
1260 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1261 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1262 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1263 { SOUND_MIXER_SYNTH, "Synth", 0 },
1264 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1265 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1266 { SOUND_MIXER_PCM, "PCM", 0 },
1267 { SOUND_MIXER_SPEAKER, "Beep", 0 },
1268 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
1269 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1270 { SOUND_MIXER_LINE, "Line", 0 },
1271 { SOUND_MIXER_MIC, "Mic", 0 },
1272 { SOUND_MIXER_CD, "CD", 0 },
1273 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1274 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1275 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1276 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1277 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1278 { SOUND_MIXER_IGAIN, "Capture", 0 },
1279 { SOUND_MIXER_OGAIN, "Playback", 0 },
1280 { SOUND_MIXER_LINE1, "Aux", 0 },
1281 { SOUND_MIXER_LINE2, "Aux", 1 },
1282 { SOUND_MIXER_LINE3, "Aux", 2 },
1283 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1284 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1285 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1286 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1287 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1288 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1289 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1290 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1291 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1292 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1293 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1294 { SOUND_MIXER_VIDEO, "Video", 0 },
1295 { SOUND_MIXER_RADIO, "Radio", 0 },
1296 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1297 };
1298 unsigned int idx;
1299
1300 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1301 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1302 if (mixer->mask_recsrc) {
1303 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1304 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1305 }
1306}
1307
1308/*
1309 *
1310 */
1311
1312static int snd_mixer_oss_free1(void *private)
1313{
1314 struct snd_mixer_oss *mixer = private;
1315 struct snd_card *card;
1316 int idx;
1317
1318 if (!mixer)
1319 return 0;
1320 card = mixer->card;
1321 if (snd_BUG_ON(mixer != card->mixer_oss))
1322 return -ENXIO;
1323 card->mixer_oss = NULL;
1324 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1325 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1326 if (chn->private_free)
1327 chn->private_free(chn);
1328 }
1329 kfree(mixer);
1330 return 0;
1331}
1332
1333static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1334{
1335 struct snd_mixer_oss *mixer;
1336
1337 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1338 int idx, err;
1339
1340 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1341 if (mixer == NULL)
1342 return -ENOMEM;
1343 mutex_init(&mixer->reg_mutex);
1344 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1345 card, 0,
1346 &snd_mixer_oss_f_ops, card)) < 0) {
1347 dev_err(card->dev,
1348 "unable to register OSS mixer device %i:%i\n",
1349 card->number, 0);
1350 kfree(mixer);
1351 return err;
1352 }
1353 mixer->oss_dev_alloc = 1;
1354 mixer->card = card;
1355 if (*card->mixername)
1356 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1357 else
1358 snprintf(mixer->name, sizeof(mixer->name),
1359 "mixer%i", card->number);
1360#ifdef SNDRV_OSS_INFO_DEV_MIXERS
1361 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1362 card->number,
1363 mixer->name);
1364#endif
1365 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1366 mixer->slots[idx].number = idx;
1367 card->mixer_oss = mixer;
1368 snd_mixer_oss_build(mixer);
1369 snd_mixer_oss_proc_init(mixer);
1370 } else {
1371 mixer = card->mixer_oss;
1372 if (mixer == NULL)
1373 return 0;
1374 if (mixer->oss_dev_alloc) {
1375#ifdef SNDRV_OSS_INFO_DEV_MIXERS
1376 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1377#endif
1378 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1379 mixer->oss_dev_alloc = 0;
1380 }
1381 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1382 return 0;
1383 snd_mixer_oss_proc_done(mixer);
1384 return snd_mixer_oss_free1(mixer);
1385 }
1386 return 0;
1387}
1388
1389static int __init alsa_mixer_oss_init(void)
1390{
1391 struct snd_card *card;
1392 int idx;
1393
1394 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1395 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1396 card = snd_card_ref(idx);
1397 if (card) {
1398 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_REGISTER);
1399 snd_card_unref(card);
1400 }
1401 }
1402 return 0;
1403}
1404
1405static void __exit alsa_mixer_oss_exit(void)
1406{
1407 struct snd_card *card;
1408 int idx;
1409
1410 snd_mixer_oss_notify_callback = NULL;
1411 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1412 card = snd_card_ref(idx);
1413 if (card) {
1414 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_FREE);
1415 snd_card_unref(card);
1416 }
1417 }
1418}
1419
1420module_init(alsa_mixer_oss_init)
1421module_exit(alsa_mixer_oss_exit)
1/*
2 * OSS emulation layer for the mixer interface
3 * Copyright (c) by Jaroslav Kysela <perex@perex.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 <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 <linux/compat.h>
28#include <sound/core.h>
29#include <sound/minors.h>
30#include <sound/control.h>
31#include <sound/info.h>
32#include <sound/mixer_oss.h>
33#include <linux/soundcard.h>
34
35#define OSS_ALSAEMULVER _SIOR ('M', 249, int)
36
37MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
38MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
39MODULE_LICENSE("GPL");
40MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
41
42static int snd_mixer_oss_open(struct inode *inode, struct file *file)
43{
44 struct snd_card *card;
45 struct snd_mixer_oss_file *fmixer;
46 int err;
47
48 err = nonseekable_open(inode, file);
49 if (err < 0)
50 return err;
51
52 card = snd_lookup_oss_minor_data(iminor(inode),
53 SNDRV_OSS_DEVICE_TYPE_MIXER);
54 if (card == NULL)
55 return -ENODEV;
56 if (card->mixer_oss == NULL) {
57 snd_card_unref(card);
58 return -ENODEV;
59 }
60 err = snd_card_file_add(card, file);
61 if (err < 0) {
62 snd_card_unref(card);
63 return err;
64 }
65 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
66 if (fmixer == NULL) {
67 snd_card_file_remove(card, file);
68 snd_card_unref(card);
69 return -ENOMEM;
70 }
71 fmixer->card = card;
72 fmixer->mixer = card->mixer_oss;
73 file->private_data = fmixer;
74 if (!try_module_get(card->module)) {
75 kfree(fmixer);
76 snd_card_file_remove(card, file);
77 snd_card_unref(card);
78 return -EFAULT;
79 }
80 snd_card_unref(card);
81 return 0;
82}
83
84static int snd_mixer_oss_release(struct inode *inode, struct file *file)
85{
86 struct snd_mixer_oss_file *fmixer;
87
88 if (file->private_data) {
89 fmixer = file->private_data;
90 module_put(fmixer->card->module);
91 snd_card_file_remove(fmixer->card, file);
92 kfree(fmixer);
93 }
94 return 0;
95}
96
97static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
98 mixer_info __user *_info)
99{
100 struct snd_card *card = fmixer->card;
101 struct snd_mixer_oss *mixer = fmixer->mixer;
102 struct mixer_info info;
103
104 memset(&info, 0, sizeof(info));
105 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
106 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
107 info.modify_counter = card->mixer_oss_change_count;
108 if (copy_to_user(_info, &info, sizeof(info)))
109 return -EFAULT;
110 return 0;
111}
112
113static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
114 _old_mixer_info __user *_info)
115{
116 struct snd_card *card = fmixer->card;
117 struct snd_mixer_oss *mixer = fmixer->mixer;
118 _old_mixer_info info;
119
120 memset(&info, 0, sizeof(info));
121 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
122 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
123 if (copy_to_user(_info, &info, sizeof(info)))
124 return -EFAULT;
125 return 0;
126}
127
128static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
129{
130 struct snd_mixer_oss *mixer = fmixer->mixer;
131 int result = 0;
132
133 if (mixer == NULL)
134 return -EIO;
135 if (mixer->get_recsrc && mixer->put_recsrc)
136 result |= SOUND_CAP_EXCL_INPUT;
137 return result;
138}
139
140static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
141{
142 struct snd_mixer_oss *mixer = fmixer->mixer;
143 struct snd_mixer_oss_slot *pslot;
144 int result = 0, chn;
145
146 if (mixer == NULL)
147 return -EIO;
148 for (chn = 0; chn < 31; chn++) {
149 pslot = &mixer->slots[chn];
150 if (pslot->put_volume || pslot->put_recsrc)
151 result |= 1 << chn;
152 }
153 return result;
154}
155
156static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
157{
158 struct snd_mixer_oss *mixer = fmixer->mixer;
159 struct snd_mixer_oss_slot *pslot;
160 int result = 0, chn;
161
162 if (mixer == NULL)
163 return -EIO;
164 for (chn = 0; chn < 31; chn++) {
165 pslot = &mixer->slots[chn];
166 if (pslot->put_volume && pslot->stereo)
167 result |= 1 << chn;
168 }
169 return result;
170}
171
172static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
173{
174 struct snd_mixer_oss *mixer = fmixer->mixer;
175 int result = 0;
176
177 if (mixer == NULL)
178 return -EIO;
179 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
180 result = mixer->mask_recsrc;
181 } else {
182 struct snd_mixer_oss_slot *pslot;
183 int chn;
184 for (chn = 0; chn < 31; chn++) {
185 pslot = &mixer->slots[chn];
186 if (pslot->put_recsrc)
187 result |= 1 << chn;
188 }
189 }
190 return result;
191}
192
193static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
194{
195 struct snd_mixer_oss *mixer = fmixer->mixer;
196 int result = 0;
197
198 if (mixer == NULL)
199 return -EIO;
200 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
201 int err;
202 unsigned int index;
203 if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
204 return err;
205 result = 1 << index;
206 } else {
207 struct snd_mixer_oss_slot *pslot;
208 int chn;
209 for (chn = 0; chn < 31; chn++) {
210 pslot = &mixer->slots[chn];
211 if (pslot->get_recsrc) {
212 int active = 0;
213 pslot->get_recsrc(fmixer, pslot, &active);
214 if (active)
215 result |= 1 << chn;
216 }
217 }
218 }
219 return mixer->oss_recsrc = result;
220}
221
222static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
223{
224 struct snd_mixer_oss *mixer = fmixer->mixer;
225 struct snd_mixer_oss_slot *pslot;
226 int chn, active;
227 unsigned int index;
228 int result = 0;
229
230 if (mixer == NULL)
231 return -EIO;
232 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
233 if (recsrc & ~mixer->oss_recsrc)
234 recsrc &= ~mixer->oss_recsrc;
235 mixer->put_recsrc(fmixer, ffz(~recsrc));
236 mixer->get_recsrc(fmixer, &index);
237 result = 1 << index;
238 }
239 for (chn = 0; chn < 31; chn++) {
240 pslot = &mixer->slots[chn];
241 if (pslot->put_recsrc) {
242 active = (recsrc & (1 << chn)) ? 1 : 0;
243 pslot->put_recsrc(fmixer, pslot, active);
244 }
245 }
246 if (! result) {
247 for (chn = 0; chn < 31; chn++) {
248 pslot = &mixer->slots[chn];
249 if (pslot->get_recsrc) {
250 active = 0;
251 pslot->get_recsrc(fmixer, pslot, &active);
252 if (active)
253 result |= 1 << chn;
254 }
255 }
256 }
257 return result;
258}
259
260static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
261{
262 struct snd_mixer_oss *mixer = fmixer->mixer;
263 struct snd_mixer_oss_slot *pslot;
264 int result = 0, left, right;
265
266 if (mixer == NULL || slot > 30)
267 return -EIO;
268 pslot = &mixer->slots[slot];
269 left = pslot->volume[0];
270 right = pslot->volume[1];
271 if (pslot->get_volume)
272 result = pslot->get_volume(fmixer, pslot, &left, &right);
273 if (!pslot->stereo)
274 right = left;
275 if (snd_BUG_ON(left < 0 || left > 100))
276 return -EIO;
277 if (snd_BUG_ON(right < 0 || right > 100))
278 return -EIO;
279 if (result >= 0) {
280 pslot->volume[0] = left;
281 pslot->volume[1] = right;
282 result = (left & 0xff) | ((right & 0xff) << 8);
283 }
284 return result;
285}
286
287static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
288 int slot, int volume)
289{
290 struct snd_mixer_oss *mixer = fmixer->mixer;
291 struct snd_mixer_oss_slot *pslot;
292 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
293
294 if (mixer == NULL || slot > 30)
295 return -EIO;
296 pslot = &mixer->slots[slot];
297 if (left > 100)
298 left = 100;
299 if (right > 100)
300 right = 100;
301 if (!pslot->stereo)
302 right = left;
303 if (pslot->put_volume)
304 result = pslot->put_volume(fmixer, pslot, left, right);
305 if (result < 0)
306 return result;
307 pslot->volume[0] = left;
308 pslot->volume[1] = right;
309 return (left & 0xff) | ((right & 0xff) << 8);
310}
311
312static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
313{
314 void __user *argp = (void __user *)arg;
315 int __user *p = argp;
316 int tmp;
317
318 if (snd_BUG_ON(!fmixer))
319 return -ENXIO;
320 if (((cmd >> 8) & 0xff) == 'M') {
321 switch (cmd) {
322 case SOUND_MIXER_INFO:
323 return snd_mixer_oss_info(fmixer, argp);
324 case SOUND_OLD_MIXER_INFO:
325 return snd_mixer_oss_info_obsolete(fmixer, argp);
326 case SOUND_MIXER_WRITE_RECSRC:
327 if (get_user(tmp, p))
328 return -EFAULT;
329 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
330 if (tmp < 0)
331 return tmp;
332 return put_user(tmp, p);
333 case OSS_GETVERSION:
334 return put_user(SNDRV_OSS_VERSION, p);
335 case OSS_ALSAEMULVER:
336 return put_user(1, p);
337 case SOUND_MIXER_READ_DEVMASK:
338 tmp = snd_mixer_oss_devmask(fmixer);
339 if (tmp < 0)
340 return tmp;
341 return put_user(tmp, p);
342 case SOUND_MIXER_READ_STEREODEVS:
343 tmp = snd_mixer_oss_stereodevs(fmixer);
344 if (tmp < 0)
345 return tmp;
346 return put_user(tmp, p);
347 case SOUND_MIXER_READ_RECMASK:
348 tmp = snd_mixer_oss_recmask(fmixer);
349 if (tmp < 0)
350 return tmp;
351 return put_user(tmp, p);
352 case SOUND_MIXER_READ_CAPS:
353 tmp = snd_mixer_oss_caps(fmixer);
354 if (tmp < 0)
355 return tmp;
356 return put_user(tmp, p);
357 case SOUND_MIXER_READ_RECSRC:
358 tmp = snd_mixer_oss_get_recsrc(fmixer);
359 if (tmp < 0)
360 return tmp;
361 return put_user(tmp, p);
362 }
363 }
364 if (cmd & SIOC_IN) {
365 if (get_user(tmp, p))
366 return -EFAULT;
367 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
368 if (tmp < 0)
369 return tmp;
370 return put_user(tmp, p);
371 } else if (cmd & SIOC_OUT) {
372 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
373 if (tmp < 0)
374 return tmp;
375 return put_user(tmp, p);
376 }
377 return -ENXIO;
378}
379
380static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
381{
382 return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
383}
384
385int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
386{
387 struct snd_mixer_oss_file fmixer;
388
389 if (snd_BUG_ON(!card))
390 return -ENXIO;
391 if (card->mixer_oss == NULL)
392 return -ENXIO;
393 memset(&fmixer, 0, sizeof(fmixer));
394 fmixer.card = card;
395 fmixer.mixer = card->mixer_oss;
396 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
397}
398
399#ifdef CONFIG_COMPAT
400/* all compatible */
401static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd,
402 unsigned long arg)
403{
404 return snd_mixer_oss_ioctl1(file->private_data, cmd,
405 (unsigned long)compat_ptr(arg));
406}
407#else
408#define snd_mixer_oss_ioctl_compat NULL
409#endif
410
411/*
412 * REGISTRATION PART
413 */
414
415static const struct file_operations snd_mixer_oss_f_ops =
416{
417 .owner = THIS_MODULE,
418 .open = snd_mixer_oss_open,
419 .release = snd_mixer_oss_release,
420 .llseek = no_llseek,
421 .unlocked_ioctl = snd_mixer_oss_ioctl,
422 .compat_ioctl = snd_mixer_oss_ioctl_compat,
423};
424
425/*
426 * utilities
427 */
428
429static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
430{
431 long orange = omax - omin, nrange = nmax - nmin;
432
433 if (orange == 0)
434 return 0;
435 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
436}
437
438/* convert from alsa native to oss values (0-100) */
439static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
440{
441 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
442 return *old;
443 return snd_mixer_oss_conv(val, min, max, 0, 100);
444}
445
446/* convert from oss to alsa native values */
447static long snd_mixer_oss_conv2(long val, long min, long max)
448{
449 return snd_mixer_oss_conv(val, 0, 100, min, max);
450}
451
452#if 0
453static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
454{
455 struct snd_mixer_oss *mixer = card->mixer_oss;
456 if (mixer)
457 mixer->mask_recsrc |= 1 << slot;
458}
459
460static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
461{
462 struct snd_mixer_oss *mixer = card->mixer_oss;
463 if (mixer && (mixer->mask_recsrc & (1 << slot)))
464 return 1;
465 return 0;
466}
467#endif
468
469#define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
470
471#define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
472#define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
473#define SNDRV_MIXER_OSS_ITEM_GROUTE 2
474#define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
475#define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
476#define SNDRV_MIXER_OSS_ITEM_PROUTE 5
477#define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
478#define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
479#define SNDRV_MIXER_OSS_ITEM_CROUTE 8
480#define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
481#define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
482
483#define SNDRV_MIXER_OSS_ITEM_COUNT 11
484
485#define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
486#define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
487#define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
488#define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
489#define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
490#define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
491#define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
492#define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
493#define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
494#define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
495#define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
496
497struct slot {
498 unsigned int signature;
499 unsigned int present;
500 unsigned int channels;
501 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
502 unsigned int capture_item;
503 struct snd_mixer_oss_assign_table *assigned;
504 unsigned int allocated: 1;
505};
506
507#define ID_UNKNOWN ((unsigned int)-1)
508
509static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
510{
511 struct snd_card *card = mixer->card;
512 struct snd_ctl_elem_id id;
513
514 memset(&id, 0, sizeof(id));
515 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
516 strlcpy(id.name, name, sizeof(id.name));
517 id.index = index;
518 return snd_ctl_find_id(card, &id);
519}
520
521static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
522 struct snd_mixer_oss_slot *pslot,
523 unsigned int numid,
524 int *left, int *right)
525{
526 struct snd_ctl_elem_info *uinfo;
527 struct snd_ctl_elem_value *uctl;
528 struct snd_kcontrol *kctl;
529 struct snd_card *card = fmixer->card;
530
531 if (numid == ID_UNKNOWN)
532 return;
533 down_read(&card->controls_rwsem);
534 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
535 up_read(&card->controls_rwsem);
536 return;
537 }
538 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
539 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
540 if (uinfo == NULL || uctl == NULL)
541 goto __unalloc;
542 if (kctl->info(kctl, uinfo))
543 goto __unalloc;
544 if (kctl->get(kctl, uctl))
545 goto __unalloc;
546 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
547 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
548 goto __unalloc;
549 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
550 if (uinfo->count > 1)
551 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
552 __unalloc:
553 up_read(&card->controls_rwsem);
554 kfree(uctl);
555 kfree(uinfo);
556}
557
558static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
559 struct snd_mixer_oss_slot *pslot,
560 unsigned int numid,
561 int *left, int *right,
562 int route)
563{
564 struct snd_ctl_elem_info *uinfo;
565 struct snd_ctl_elem_value *uctl;
566 struct snd_kcontrol *kctl;
567 struct snd_card *card = fmixer->card;
568
569 if (numid == ID_UNKNOWN)
570 return;
571 down_read(&card->controls_rwsem);
572 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
573 up_read(&card->controls_rwsem);
574 return;
575 }
576 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
577 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
578 if (uinfo == NULL || uctl == NULL)
579 goto __unalloc;
580 if (kctl->info(kctl, uinfo))
581 goto __unalloc;
582 if (kctl->get(kctl, uctl))
583 goto __unalloc;
584 if (!uctl->value.integer.value[0]) {
585 *left = 0;
586 if (uinfo->count == 1)
587 *right = 0;
588 }
589 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
590 *right = 0;
591 __unalloc:
592 up_read(&card->controls_rwsem);
593 kfree(uctl);
594 kfree(uinfo);
595}
596
597static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
598 struct snd_mixer_oss_slot *pslot,
599 int *left, int *right)
600{
601 struct slot *slot = pslot->private_data;
602
603 *left = *right = 100;
604 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
605 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
606 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
607 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
608 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
609 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
610 }
611 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
612 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
613 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
614 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
615 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
616 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
617 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
618 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
619 }
620 return 0;
621}
622
623static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
624 struct snd_mixer_oss_slot *pslot,
625 unsigned int numid,
626 int left, int right)
627{
628 struct snd_ctl_elem_info *uinfo;
629 struct snd_ctl_elem_value *uctl;
630 struct snd_kcontrol *kctl;
631 struct snd_card *card = fmixer->card;
632 int res;
633
634 if (numid == ID_UNKNOWN)
635 return;
636 down_read(&card->controls_rwsem);
637 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
638 up_read(&card->controls_rwsem);
639 return;
640 }
641 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
642 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
643 if (uinfo == NULL || uctl == NULL)
644 goto __unalloc;
645 if (kctl->info(kctl, uinfo))
646 goto __unalloc;
647 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
648 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
649 goto __unalloc;
650 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
651 if (uinfo->count > 1)
652 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
653 if ((res = kctl->put(kctl, uctl)) < 0)
654 goto __unalloc;
655 if (res > 0)
656 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
657 __unalloc:
658 up_read(&card->controls_rwsem);
659 kfree(uctl);
660 kfree(uinfo);
661}
662
663static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
664 struct snd_mixer_oss_slot *pslot,
665 unsigned int numid,
666 int left, int right,
667 int route)
668{
669 struct snd_ctl_elem_info *uinfo;
670 struct snd_ctl_elem_value *uctl;
671 struct snd_kcontrol *kctl;
672 struct snd_card *card = fmixer->card;
673 int res;
674
675 if (numid == ID_UNKNOWN)
676 return;
677 down_read(&card->controls_rwsem);
678 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
679 up_read(&card->controls_rwsem);
680 return;
681 }
682 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
683 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
684 if (uinfo == NULL || uctl == NULL)
685 goto __unalloc;
686 if (kctl->info(kctl, uinfo))
687 goto __unalloc;
688 if (uinfo->count > 1) {
689 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
690 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
691 if (route) {
692 uctl->value.integer.value[1] =
693 uctl->value.integer.value[2] = 0;
694 }
695 } else {
696 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
697 }
698 if ((res = kctl->put(kctl, uctl)) < 0)
699 goto __unalloc;
700 if (res > 0)
701 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
702 __unalloc:
703 up_read(&card->controls_rwsem);
704 kfree(uctl);
705 kfree(uinfo);
706}
707
708static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
709 struct snd_mixer_oss_slot *pslot,
710 int left, int right)
711{
712 struct slot *slot = pslot->private_data;
713
714 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
715 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
716 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
717 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
718 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
719 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
720 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
721 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
722 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
723 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
724 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
725 }
726 if (left || right) {
727 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
728 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
729 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
730 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
731 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
732 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
733 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
734 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
735 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
736 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
737 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
738 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
739 } else {
740 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
741 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
742 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
743 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
744 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
745 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
746 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
747 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
748 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
749 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
750 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
751 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
752 }
753 }
754 return 0;
755}
756
757static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
758 struct snd_mixer_oss_slot *pslot,
759 int *active)
760{
761 struct slot *slot = pslot->private_data;
762 int left, right;
763
764 left = right = 1;
765 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
766 *active = (left || right) ? 1 : 0;
767 return 0;
768}
769
770static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
771 struct snd_mixer_oss_slot *pslot,
772 int *active)
773{
774 struct slot *slot = pslot->private_data;
775 int left, right;
776
777 left = right = 1;
778 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
779 *active = (left || right) ? 1 : 0;
780 return 0;
781}
782
783static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
784 struct snd_mixer_oss_slot *pslot,
785 int active)
786{
787 struct slot *slot = pslot->private_data;
788
789 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
790 return 0;
791}
792
793static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
794 struct snd_mixer_oss_slot *pslot,
795 int active)
796{
797 struct slot *slot = pslot->private_data;
798
799 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
800 return 0;
801}
802
803static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
804{
805 struct snd_card *card = fmixer->card;
806 struct snd_mixer_oss *mixer = fmixer->mixer;
807 struct snd_kcontrol *kctl;
808 struct snd_mixer_oss_slot *pslot;
809 struct slot *slot;
810 struct snd_ctl_elem_info *uinfo;
811 struct snd_ctl_elem_value *uctl;
812 int err, idx;
813
814 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
815 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
816 if (uinfo == NULL || uctl == NULL) {
817 err = -ENOMEM;
818 goto __free_only;
819 }
820 down_read(&card->controls_rwsem);
821 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
822 if (! kctl) {
823 err = -ENOENT;
824 goto __unlock;
825 }
826 if ((err = kctl->info(kctl, uinfo)) < 0)
827 goto __unlock;
828 if ((err = kctl->get(kctl, uctl)) < 0)
829 goto __unlock;
830 for (idx = 0; idx < 32; idx++) {
831 if (!(mixer->mask_recsrc & (1 << idx)))
832 continue;
833 pslot = &mixer->slots[idx];
834 slot = pslot->private_data;
835 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
836 continue;
837 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
838 continue;
839 if (slot->capture_item == uctl->value.enumerated.item[0]) {
840 *active_index = idx;
841 break;
842 }
843 }
844 err = 0;
845 __unlock:
846 up_read(&card->controls_rwsem);
847 __free_only:
848 kfree(uctl);
849 kfree(uinfo);
850 return err;
851}
852
853static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
854{
855 struct snd_card *card = fmixer->card;
856 struct snd_mixer_oss *mixer = fmixer->mixer;
857 struct snd_kcontrol *kctl;
858 struct snd_mixer_oss_slot *pslot;
859 struct slot *slot = NULL;
860 struct snd_ctl_elem_info *uinfo;
861 struct snd_ctl_elem_value *uctl;
862 int err;
863 unsigned int idx;
864
865 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
866 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
867 if (uinfo == NULL || uctl == NULL) {
868 err = -ENOMEM;
869 goto __free_only;
870 }
871 down_read(&card->controls_rwsem);
872 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
873 if (! kctl) {
874 err = -ENOENT;
875 goto __unlock;
876 }
877 if ((err = kctl->info(kctl, uinfo)) < 0)
878 goto __unlock;
879 for (idx = 0; idx < 32; idx++) {
880 if (!(mixer->mask_recsrc & (1 << idx)))
881 continue;
882 pslot = &mixer->slots[idx];
883 slot = pslot->private_data;
884 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
885 continue;
886 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
887 continue;
888 if (idx == active_index)
889 break;
890 slot = NULL;
891 }
892 if (! slot)
893 goto __unlock;
894 for (idx = 0; idx < uinfo->count; idx++)
895 uctl->value.enumerated.item[idx] = slot->capture_item;
896 err = kctl->put(kctl, uctl);
897 if (err > 0)
898 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
899 err = 0;
900 __unlock:
901 up_read(&card->controls_rwsem);
902 __free_only:
903 kfree(uctl);
904 kfree(uinfo);
905 return err;
906}
907
908struct snd_mixer_oss_assign_table {
909 int oss_id;
910 const char *name;
911 int index;
912};
913
914static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
915{
916 struct snd_ctl_elem_info *info;
917 struct snd_kcontrol *kcontrol;
918 struct snd_card *card = mixer->card;
919 int err;
920
921 down_read(&card->controls_rwsem);
922 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
923 if (kcontrol == NULL) {
924 up_read(&card->controls_rwsem);
925 return 0;
926 }
927 info = kmalloc(sizeof(*info), GFP_KERNEL);
928 if (! info) {
929 up_read(&card->controls_rwsem);
930 return -ENOMEM;
931 }
932 if ((err = kcontrol->info(kcontrol, info)) < 0) {
933 up_read(&card->controls_rwsem);
934 kfree(info);
935 return err;
936 }
937 slot->numid[item] = kcontrol->id.numid;
938 up_read(&card->controls_rwsem);
939 if (info->count > slot->channels)
940 slot->channels = info->count;
941 slot->present |= 1 << item;
942 kfree(info);
943 return 0;
944}
945
946static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
947{
948 struct slot *p = chn->private_data;
949 if (p) {
950 if (p->allocated && p->assigned) {
951 kfree(p->assigned->name);
952 kfree(p->assigned);
953 }
954 kfree(p);
955 }
956}
957
958static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
959{
960 int idx = rslot->number; /* remember this */
961 if (rslot->private_free)
962 rslot->private_free(rslot);
963 memset(rslot, 0, sizeof(*rslot));
964 rslot->number = idx;
965}
966
967/* In a separate function to keep gcc 3.2 happy - do NOT merge this in
968 snd_mixer_oss_build_input! */
969static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
970 struct snd_mixer_oss_assign_table *ptr,
971 struct slot *slot)
972{
973 char str[64];
974 int err;
975
976 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
977 SNDRV_MIXER_OSS_ITEM_GLOBAL);
978 if (err)
979 return err;
980 sprintf(str, "%s Switch", ptr->name);
981 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
982 SNDRV_MIXER_OSS_ITEM_GSWITCH);
983 if (err)
984 return err;
985 sprintf(str, "%s Route", ptr->name);
986 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
987 SNDRV_MIXER_OSS_ITEM_GROUTE);
988 if (err)
989 return err;
990 sprintf(str, "%s Volume", ptr->name);
991 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
992 SNDRV_MIXER_OSS_ITEM_GVOLUME);
993 if (err)
994 return err;
995 sprintf(str, "%s Playback Switch", ptr->name);
996 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
997 SNDRV_MIXER_OSS_ITEM_PSWITCH);
998 if (err)
999 return err;
1000 sprintf(str, "%s Playback Route", ptr->name);
1001 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1002 SNDRV_MIXER_OSS_ITEM_PROUTE);
1003 if (err)
1004 return err;
1005 sprintf(str, "%s Playback Volume", ptr->name);
1006 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1007 SNDRV_MIXER_OSS_ITEM_PVOLUME);
1008 if (err)
1009 return err;
1010 sprintf(str, "%s Capture Switch", ptr->name);
1011 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1012 SNDRV_MIXER_OSS_ITEM_CSWITCH);
1013 if (err)
1014 return err;
1015 sprintf(str, "%s Capture Route", ptr->name);
1016 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1017 SNDRV_MIXER_OSS_ITEM_CROUTE);
1018 if (err)
1019 return err;
1020 sprintf(str, "%s Capture Volume", ptr->name);
1021 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1022 SNDRV_MIXER_OSS_ITEM_CVOLUME);
1023 if (err)
1024 return err;
1025
1026 return 0;
1027}
1028
1029/*
1030 * build an OSS mixer element.
1031 * ptr_allocated means the entry is dynamically allocated (change via proc file).
1032 * when replace_old = 1, the old entry is replaced with the new one.
1033 */
1034static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
1035{
1036 struct slot slot;
1037 struct slot *pslot;
1038 struct snd_kcontrol *kctl;
1039 struct snd_mixer_oss_slot *rslot;
1040 char str[64];
1041
1042 /* check if already assigned */
1043 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1044 return 0;
1045
1046 memset(&slot, 0, sizeof(slot));
1047 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1048 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1049 return 0;
1050 down_read(&mixer->card->controls_rwsem);
1051 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1052 struct snd_ctl_elem_info *uinfo;
1053
1054 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1055 if (! uinfo) {
1056 up_read(&mixer->card->controls_rwsem);
1057 return -ENOMEM;
1058 }
1059
1060 if (kctl->info(kctl, uinfo)) {
1061 up_read(&mixer->card->controls_rwsem);
1062 kfree(uinfo);
1063 return 0;
1064 }
1065 strcpy(str, ptr->name);
1066 if (!strcmp(str, "Master"))
1067 strcpy(str, "Mix");
1068 if (!strcmp(str, "Master Mono"))
1069 strcpy(str, "Mix Mono");
1070 slot.capture_item = 0;
1071 if (!strcmp(uinfo->value.enumerated.name, str)) {
1072 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1073 } else {
1074 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1075 uinfo->value.enumerated.item = slot.capture_item;
1076 if (kctl->info(kctl, uinfo)) {
1077 up_read(&mixer->card->controls_rwsem);
1078 kfree(uinfo);
1079 return 0;
1080 }
1081 if (!strcmp(uinfo->value.enumerated.name, str)) {
1082 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1083 break;
1084 }
1085 }
1086 }
1087 kfree(uinfo);
1088 }
1089 up_read(&mixer->card->controls_rwsem);
1090 if (slot.present != 0) {
1091 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1092 if (! pslot)
1093 return -ENOMEM;
1094 *pslot = slot;
1095 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1096 pslot->assigned = ptr;
1097 pslot->allocated = ptr_allocated;
1098 rslot = &mixer->slots[ptr->oss_id];
1099 mixer_slot_clear(rslot);
1100 rslot->stereo = slot.channels > 1 ? 1 : 0;
1101 rslot->get_volume = snd_mixer_oss_get_volume1;
1102 rslot->put_volume = snd_mixer_oss_put_volume1;
1103 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1104 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1105 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1106 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1107 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1108 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1109 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1110 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1111 mixer->mask_recsrc |= 1 << ptr->oss_id;
1112 }
1113 rslot->private_data = pslot;
1114 rslot->private_free = snd_mixer_oss_slot_free;
1115 return 1;
1116 }
1117 return 0;
1118}
1119
1120#ifdef CONFIG_SND_PROC_FS
1121/*
1122 */
1123#define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1124static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1125 MIXER_VOL(VOLUME),
1126 MIXER_VOL(BASS),
1127 MIXER_VOL(TREBLE),
1128 MIXER_VOL(SYNTH),
1129 MIXER_VOL(PCM),
1130 MIXER_VOL(SPEAKER),
1131 MIXER_VOL(LINE),
1132 MIXER_VOL(MIC),
1133 MIXER_VOL(CD),
1134 MIXER_VOL(IMIX),
1135 MIXER_VOL(ALTPCM),
1136 MIXER_VOL(RECLEV),
1137 MIXER_VOL(IGAIN),
1138 MIXER_VOL(OGAIN),
1139 MIXER_VOL(LINE1),
1140 MIXER_VOL(LINE2),
1141 MIXER_VOL(LINE3),
1142 MIXER_VOL(DIGITAL1),
1143 MIXER_VOL(DIGITAL2),
1144 MIXER_VOL(DIGITAL3),
1145 MIXER_VOL(PHONEIN),
1146 MIXER_VOL(PHONEOUT),
1147 MIXER_VOL(VIDEO),
1148 MIXER_VOL(RADIO),
1149 MIXER_VOL(MONITOR),
1150};
1151
1152/*
1153 * /proc interface
1154 */
1155
1156static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1157 struct snd_info_buffer *buffer)
1158{
1159 struct snd_mixer_oss *mixer = entry->private_data;
1160 int i;
1161
1162 mutex_lock(&mixer->reg_mutex);
1163 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1164 struct slot *p;
1165
1166 if (! oss_mixer_names[i])
1167 continue;
1168 p = (struct slot *)mixer->slots[i].private_data;
1169 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1170 if (p && p->assigned)
1171 snd_iprintf(buffer, "\"%s\" %d\n",
1172 p->assigned->name,
1173 p->assigned->index);
1174 else
1175 snd_iprintf(buffer, "\"\" 0\n");
1176 }
1177 mutex_unlock(&mixer->reg_mutex);
1178}
1179
1180static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1181 struct snd_info_buffer *buffer)
1182{
1183 struct snd_mixer_oss *mixer = entry->private_data;
1184 char line[128], str[32], idxstr[16];
1185 const char *cptr;
1186 unsigned int idx;
1187 int ch;
1188 struct snd_mixer_oss_assign_table *tbl;
1189 struct slot *slot;
1190
1191 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1192 cptr = snd_info_get_str(str, line, sizeof(str));
1193 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1194 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1195 break;
1196 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1197 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1198 str);
1199 continue;
1200 }
1201 cptr = snd_info_get_str(str, cptr, sizeof(str));
1202 if (! *str) {
1203 /* remove the entry */
1204 mutex_lock(&mixer->reg_mutex);
1205 mixer_slot_clear(&mixer->slots[ch]);
1206 mutex_unlock(&mixer->reg_mutex);
1207 continue;
1208 }
1209 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1210 idx = simple_strtoul(idxstr, NULL, 10);
1211 if (idx >= 0x4000) { /* too big */
1212 pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
1213 continue;
1214 }
1215 mutex_lock(&mixer->reg_mutex);
1216 slot = (struct slot *)mixer->slots[ch].private_data;
1217 if (slot && slot->assigned &&
1218 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1219 /* not changed */
1220 goto __unlock;
1221 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1222 if (!tbl)
1223 goto __unlock;
1224 tbl->oss_id = ch;
1225 tbl->name = kstrdup(str, GFP_KERNEL);
1226 if (! tbl->name) {
1227 kfree(tbl);
1228 goto __unlock;
1229 }
1230 tbl->index = idx;
1231 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1232 kfree(tbl->name);
1233 kfree(tbl);
1234 }
1235 __unlock:
1236 mutex_unlock(&mixer->reg_mutex);
1237 }
1238}
1239
1240static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1241{
1242 struct snd_info_entry *entry;
1243
1244 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1245 mixer->card->proc_root);
1246 if (! entry)
1247 return;
1248 entry->content = SNDRV_INFO_CONTENT_TEXT;
1249 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1250 entry->c.text.read = snd_mixer_oss_proc_read;
1251 entry->c.text.write = snd_mixer_oss_proc_write;
1252 entry->private_data = mixer;
1253 if (snd_info_register(entry) < 0) {
1254 snd_info_free_entry(entry);
1255 entry = NULL;
1256 }
1257 mixer->proc_entry = entry;
1258}
1259
1260static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1261{
1262 snd_info_free_entry(mixer->proc_entry);
1263 mixer->proc_entry = NULL;
1264}
1265#else /* !CONFIG_SND_PROC_FS */
1266#define snd_mixer_oss_proc_init(mix)
1267#define snd_mixer_oss_proc_done(mix)
1268#endif /* CONFIG_SND_PROC_FS */
1269
1270static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1271{
1272 static struct snd_mixer_oss_assign_table table[] = {
1273 { SOUND_MIXER_VOLUME, "Master", 0 },
1274 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1275 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1276 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1277 { SOUND_MIXER_SYNTH, "Synth", 0 },
1278 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1279 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1280 { SOUND_MIXER_PCM, "PCM", 0 },
1281 { SOUND_MIXER_SPEAKER, "Beep", 0 },
1282 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
1283 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1284 { SOUND_MIXER_LINE, "Line", 0 },
1285 { SOUND_MIXER_MIC, "Mic", 0 },
1286 { SOUND_MIXER_CD, "CD", 0 },
1287 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1288 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1289 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1290 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1291 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1292 { SOUND_MIXER_IGAIN, "Capture", 0 },
1293 { SOUND_MIXER_OGAIN, "Playback", 0 },
1294 { SOUND_MIXER_LINE1, "Aux", 0 },
1295 { SOUND_MIXER_LINE2, "Aux", 1 },
1296 { SOUND_MIXER_LINE3, "Aux", 2 },
1297 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1298 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1299 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1300 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1301 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1302 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1303 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1304 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1305 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1306 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1307 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1308 { SOUND_MIXER_VIDEO, "Video", 0 },
1309 { SOUND_MIXER_RADIO, "Radio", 0 },
1310 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1311 };
1312 unsigned int idx;
1313
1314 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1315 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1316 if (mixer->mask_recsrc) {
1317 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1318 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1319 }
1320}
1321
1322/*
1323 *
1324 */
1325
1326static int snd_mixer_oss_free1(void *private)
1327{
1328 struct snd_mixer_oss *mixer = private;
1329 struct snd_card *card;
1330 int idx;
1331
1332 if (!mixer)
1333 return 0;
1334 card = mixer->card;
1335 if (snd_BUG_ON(mixer != card->mixer_oss))
1336 return -ENXIO;
1337 card->mixer_oss = NULL;
1338 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1339 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1340 if (chn->private_free)
1341 chn->private_free(chn);
1342 }
1343 kfree(mixer);
1344 return 0;
1345}
1346
1347static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1348{
1349 struct snd_mixer_oss *mixer;
1350
1351 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1352 int idx, err;
1353
1354 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1355 if (mixer == NULL)
1356 return -ENOMEM;
1357 mutex_init(&mixer->reg_mutex);
1358 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1359 card, 0,
1360 &snd_mixer_oss_f_ops, card)) < 0) {
1361 dev_err(card->dev,
1362 "unable to register OSS mixer device %i:%i\n",
1363 card->number, 0);
1364 kfree(mixer);
1365 return err;
1366 }
1367 mixer->oss_dev_alloc = 1;
1368 mixer->card = card;
1369 if (*card->mixername)
1370 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1371 else
1372 snprintf(mixer->name, sizeof(mixer->name),
1373 "mixer%i", card->number);
1374#ifdef SNDRV_OSS_INFO_DEV_MIXERS
1375 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1376 card->number,
1377 mixer->name);
1378#endif
1379 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1380 mixer->slots[idx].number = idx;
1381 card->mixer_oss = mixer;
1382 snd_mixer_oss_build(mixer);
1383 snd_mixer_oss_proc_init(mixer);
1384 } else {
1385 mixer = card->mixer_oss;
1386 if (mixer == NULL)
1387 return 0;
1388 if (mixer->oss_dev_alloc) {
1389#ifdef SNDRV_OSS_INFO_DEV_MIXERS
1390 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1391#endif
1392 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1393 mixer->oss_dev_alloc = 0;
1394 }
1395 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1396 return 0;
1397 snd_mixer_oss_proc_done(mixer);
1398 return snd_mixer_oss_free1(mixer);
1399 }
1400 return 0;
1401}
1402
1403static int __init alsa_mixer_oss_init(void)
1404{
1405 int idx;
1406
1407 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1408 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1409 if (snd_cards[idx])
1410 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1411 }
1412 return 0;
1413}
1414
1415static void __exit alsa_mixer_oss_exit(void)
1416{
1417 int idx;
1418
1419 snd_mixer_oss_notify_callback = NULL;
1420 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1421 if (snd_cards[idx])
1422 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1423 }
1424}
1425
1426module_init(alsa_mixer_oss_init)
1427module_exit(alsa_mixer_oss_exit)
1428
1429EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);