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