Loading...
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);
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 .llseek = no_llseek,
416 .unlocked_ioctl = snd_mixer_oss_ioctl,
417 .compat_ioctl = snd_mixer_oss_ioctl_compat,
418};
419
420/*
421 * utilities
422 */
423
424static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
425{
426 long orange = omax - omin, nrange = nmax - nmin;
427
428 if (orange == 0)
429 return 0;
430 return DIV_ROUND_CLOSEST(nrange * (val - omin), orange) + nmin;
431}
432
433/* convert from alsa native to oss values (0-100) */
434static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
435{
436 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
437 return *old;
438 return snd_mixer_oss_conv(val, min, max, 0, 100);
439}
440
441/* convert from oss to alsa native values */
442static long snd_mixer_oss_conv2(long val, long min, long max)
443{
444 return snd_mixer_oss_conv(val, 0, 100, min, max);
445}
446
447#if 0
448static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
449{
450 struct snd_mixer_oss *mixer = card->mixer_oss;
451 if (mixer)
452 mixer->mask_recsrc |= 1 << slot;
453}
454
455static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
456{
457 struct snd_mixer_oss *mixer = card->mixer_oss;
458 if (mixer && (mixer->mask_recsrc & (1 << slot)))
459 return 1;
460 return 0;
461}
462#endif
463
464#define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
465
466#define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
467#define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
468#define SNDRV_MIXER_OSS_ITEM_GROUTE 2
469#define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
470#define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
471#define SNDRV_MIXER_OSS_ITEM_PROUTE 5
472#define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
473#define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
474#define SNDRV_MIXER_OSS_ITEM_CROUTE 8
475#define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
476#define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
477
478#define SNDRV_MIXER_OSS_ITEM_COUNT 11
479
480#define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
481#define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
482#define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
483#define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
484#define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
485#define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
486#define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
487#define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
488#define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
489#define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
490#define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
491
492struct slot {
493 unsigned int signature;
494 unsigned int present;
495 unsigned int channels;
496 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
497 unsigned int capture_item;
498 const struct snd_mixer_oss_assign_table *assigned;
499 unsigned int allocated: 1;
500};
501
502#define ID_UNKNOWN ((unsigned int)-1)
503
504static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
505{
506 struct snd_card *card = mixer->card;
507 struct snd_ctl_elem_id id;
508
509 memset(&id, 0, sizeof(id));
510 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
511 strscpy(id.name, name, sizeof(id.name));
512 id.index = index;
513 return snd_ctl_find_id_locked(card, &id);
514}
515
516static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
517 struct snd_mixer_oss_slot *pslot,
518 unsigned int numid,
519 int *left, int *right)
520{
521 struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
522 struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
523 struct snd_kcontrol *kctl;
524 struct snd_card *card = fmixer->card;
525
526 if (numid == ID_UNKNOWN)
527 return;
528 guard(rwsem_read)(&card->controls_rwsem);
529 kctl = snd_ctl_find_numid_locked(card, numid);
530 if (!kctl)
531 return;
532 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
533 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
534 if (uinfo == NULL || uctl == NULL)
535 return;
536 if (kctl->info(kctl, uinfo))
537 return;
538 if (kctl->get(kctl, uctl))
539 return;
540 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
541 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
542 return;
543 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
544 if (uinfo->count > 1)
545 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
546}
547
548static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
549 struct snd_mixer_oss_slot *pslot,
550 unsigned int numid,
551 int *left, int *right,
552 int route)
553{
554 struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
555 struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
556 struct snd_kcontrol *kctl;
557 struct snd_card *card = fmixer->card;
558
559 if (numid == ID_UNKNOWN)
560 return;
561 guard(rwsem_read)(&card->controls_rwsem);
562 kctl = snd_ctl_find_numid_locked(card, numid);
563 if (!kctl)
564 return;
565 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
566 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
567 if (uinfo == NULL || uctl == NULL)
568 return;
569 if (kctl->info(kctl, uinfo))
570 return;
571 if (kctl->get(kctl, uctl))
572 return;
573 if (!uctl->value.integer.value[0]) {
574 *left = 0;
575 if (uinfo->count == 1)
576 *right = 0;
577 }
578 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
579 *right = 0;
580}
581
582static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
583 struct snd_mixer_oss_slot *pslot,
584 int *left, int *right)
585{
586 struct slot *slot = pslot->private_data;
587
588 *left = *right = 100;
589 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
590 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
591 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
592 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
593 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
594 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
595 }
596 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
597 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
598 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
599 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
600 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
601 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
602 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
603 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
604 }
605 return 0;
606}
607
608static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
609 struct snd_mixer_oss_slot *pslot,
610 unsigned int numid,
611 int left, int right)
612{
613 struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
614 struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
615 struct snd_kcontrol *kctl;
616 struct snd_card *card = fmixer->card;
617 int res;
618
619 if (numid == ID_UNKNOWN)
620 return;
621 guard(rwsem_read)(&card->controls_rwsem);
622 kctl = snd_ctl_find_numid_locked(card, numid);
623 if (!kctl)
624 return;
625 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
626 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
627 if (uinfo == NULL || uctl == NULL)
628 return;
629 if (kctl->info(kctl, uinfo))
630 return;
631 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
632 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
633 return;
634 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
635 if (uinfo->count > 1)
636 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
637 res = kctl->put(kctl, uctl);
638 if (res < 0)
639 return;
640 if (res > 0)
641 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
642}
643
644static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
645 struct snd_mixer_oss_slot *pslot,
646 unsigned int numid,
647 int left, int right,
648 int route)
649{
650 struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
651 struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
652 struct snd_kcontrol *kctl;
653 struct snd_card *card = fmixer->card;
654 int res;
655
656 if (numid == ID_UNKNOWN)
657 return;
658 guard(rwsem_read)(&card->controls_rwsem);
659 kctl = snd_ctl_find_numid_locked(card, numid);
660 if (!kctl)
661 return;
662 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
663 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
664 if (uinfo == NULL || uctl == NULL)
665 return;
666 if (kctl->info(kctl, uinfo))
667 return;
668 if (uinfo->count > 1) {
669 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
670 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
671 if (route) {
672 uctl->value.integer.value[1] =
673 uctl->value.integer.value[2] = 0;
674 }
675 } else {
676 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
677 }
678 res = kctl->put(kctl, uctl);
679 if (res < 0)
680 return;
681 if (res > 0)
682 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
683}
684
685static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
686 struct snd_mixer_oss_slot *pslot,
687 int left, int right)
688{
689 struct slot *slot = pslot->private_data;
690
691 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
692 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
693 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
694 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
695 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
696 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
697 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
698 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
699 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
700 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
701 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
702 }
703 if (left || right) {
704 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
705 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
706 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
707 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
708 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
709 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
710 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
711 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
712 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
713 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
714 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
715 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
716 } else {
717 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
718 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
719 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
720 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
721 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
722 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
723 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
724 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
725 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
726 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
727 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
728 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
729 }
730 }
731 return 0;
732}
733
734static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
735 struct snd_mixer_oss_slot *pslot,
736 int *active)
737{
738 struct slot *slot = pslot->private_data;
739 int left, right;
740
741 left = right = 1;
742 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
743 *active = (left || right) ? 1 : 0;
744 return 0;
745}
746
747static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
748 struct snd_mixer_oss_slot *pslot,
749 int *active)
750{
751 struct slot *slot = pslot->private_data;
752 int left, right;
753
754 left = right = 1;
755 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
756 *active = (left || right) ? 1 : 0;
757 return 0;
758}
759
760static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
761 struct snd_mixer_oss_slot *pslot,
762 int active)
763{
764 struct slot *slot = pslot->private_data;
765
766 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
767 return 0;
768}
769
770static int snd_mixer_oss_put_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
776 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
777 return 0;
778}
779
780static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
781{
782 struct snd_card *card = fmixer->card;
783 struct snd_mixer_oss *mixer = fmixer->mixer;
784 struct snd_kcontrol *kctl;
785 struct snd_mixer_oss_slot *pslot;
786 struct slot *slot;
787 struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
788 struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
789 int err, idx;
790
791 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
792 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
793 if (uinfo == NULL || uctl == NULL)
794 return -ENOMEM;
795 guard(rwsem_read)(&card->controls_rwsem);
796 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
797 if (!kctl)
798 return -ENOENT;
799 err = kctl->info(kctl, uinfo);
800 if (err < 0)
801 return err;
802 err = kctl->get(kctl, uctl);
803 if (err < 0)
804 return err;
805 for (idx = 0; idx < 32; idx++) {
806 if (!(mixer->mask_recsrc & (1 << idx)))
807 continue;
808 pslot = &mixer->slots[idx];
809 slot = pslot->private_data;
810 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
811 continue;
812 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
813 continue;
814 if (slot->capture_item == uctl->value.enumerated.item[0]) {
815 *active_index = idx;
816 break;
817 }
818 }
819 return 0;
820}
821
822static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
823{
824 struct snd_card *card = fmixer->card;
825 struct snd_mixer_oss *mixer = fmixer->mixer;
826 struct snd_kcontrol *kctl;
827 struct snd_mixer_oss_slot *pslot;
828 struct slot *slot = NULL;
829 struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
830 struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
831 int err;
832 unsigned int idx;
833
834 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
835 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
836 if (uinfo == NULL || uctl == NULL)
837 return -ENOMEM;
838 guard(rwsem_read)(&card->controls_rwsem);
839 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
840 if (!kctl)
841 return -ENOENT;
842 err = kctl->info(kctl, uinfo);
843 if (err < 0)
844 return err;
845 for (idx = 0; idx < 32; idx++) {
846 if (!(mixer->mask_recsrc & (1 << idx)))
847 continue;
848 pslot = &mixer->slots[idx];
849 slot = pslot->private_data;
850 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
851 continue;
852 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
853 continue;
854 if (idx == active_index)
855 break;
856 slot = NULL;
857 }
858 if (!slot)
859 return 0;
860 for (idx = 0; idx < uinfo->count; idx++)
861 uctl->value.enumerated.item[idx] = slot->capture_item;
862 err = kctl->put(kctl, uctl);
863 if (err > 0)
864 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
865 return 0;
866}
867
868struct snd_mixer_oss_assign_table {
869 int oss_id;
870 const char *name;
871 int index;
872};
873
874static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
875{
876 struct snd_ctl_elem_info *info __free(kfree) = NULL;
877 struct snd_kcontrol *kcontrol;
878 struct snd_card *card = mixer->card;
879 int err;
880
881 scoped_guard(rwsem_read, &card->controls_rwsem) {
882 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
883 if (kcontrol == NULL)
884 return 0;
885 info = kmalloc(sizeof(*info), GFP_KERNEL);
886 if (!info)
887 return -ENOMEM;
888 err = kcontrol->info(kcontrol, info);
889 if (err < 0)
890 return err;
891 slot->numid[item] = kcontrol->id.numid;
892 }
893 if (info->count > slot->channels)
894 slot->channels = info->count;
895 slot->present |= 1 << item;
896 return 0;
897}
898
899static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
900{
901 struct slot *p = chn->private_data;
902 if (p) {
903 if (p->allocated && p->assigned) {
904 kfree_const(p->assigned->name);
905 kfree_const(p->assigned);
906 }
907 kfree(p);
908 }
909}
910
911static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
912{
913 int idx = rslot->number; /* remember this */
914 if (rslot->private_free)
915 rslot->private_free(rslot);
916 memset(rslot, 0, sizeof(*rslot));
917 rslot->number = idx;
918}
919
920/* In a separate function to keep gcc 3.2 happy - do NOT merge this in
921 snd_mixer_oss_build_input! */
922static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
923 const struct snd_mixer_oss_assign_table *ptr,
924 struct slot *slot)
925{
926 char str[64];
927 int err;
928
929 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
930 SNDRV_MIXER_OSS_ITEM_GLOBAL);
931 if (err)
932 return err;
933 sprintf(str, "%s Switch", ptr->name);
934 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
935 SNDRV_MIXER_OSS_ITEM_GSWITCH);
936 if (err)
937 return err;
938 sprintf(str, "%s Route", ptr->name);
939 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
940 SNDRV_MIXER_OSS_ITEM_GROUTE);
941 if (err)
942 return err;
943 sprintf(str, "%s Volume", ptr->name);
944 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
945 SNDRV_MIXER_OSS_ITEM_GVOLUME);
946 if (err)
947 return err;
948 sprintf(str, "%s Playback Switch", ptr->name);
949 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
950 SNDRV_MIXER_OSS_ITEM_PSWITCH);
951 if (err)
952 return err;
953 sprintf(str, "%s Playback Route", ptr->name);
954 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
955 SNDRV_MIXER_OSS_ITEM_PROUTE);
956 if (err)
957 return err;
958 sprintf(str, "%s Playback Volume", ptr->name);
959 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
960 SNDRV_MIXER_OSS_ITEM_PVOLUME);
961 if (err)
962 return err;
963 sprintf(str, "%s Capture Switch", ptr->name);
964 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
965 SNDRV_MIXER_OSS_ITEM_CSWITCH);
966 if (err)
967 return err;
968 sprintf(str, "%s Capture Route", ptr->name);
969 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
970 SNDRV_MIXER_OSS_ITEM_CROUTE);
971 if (err)
972 return err;
973 sprintf(str, "%s Capture Volume", ptr->name);
974 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
975 SNDRV_MIXER_OSS_ITEM_CVOLUME);
976 if (err)
977 return err;
978
979 return 0;
980}
981
982/*
983 * build an OSS mixer element.
984 * ptr_allocated means the entry is dynamically allocated (change via proc file).
985 * when replace_old = 1, the old entry is replaced with the new one.
986 */
987static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
988 const struct snd_mixer_oss_assign_table *ptr,
989 int ptr_allocated, int replace_old)
990{
991 struct slot slot;
992 struct slot *pslot;
993 struct snd_kcontrol *kctl;
994 struct snd_mixer_oss_slot *rslot;
995 char str[64];
996
997 /* check if already assigned */
998 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
999 return 0;
1000
1001 memset(&slot, 0, sizeof(slot));
1002 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1003 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1004 return 0;
1005 guard(rwsem_read)(&mixer->card->controls_rwsem);
1006 kctl = NULL;
1007 if (!ptr->index)
1008 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
1009 if (kctl) {
1010 struct snd_ctl_elem_info *uinfo __free(kfree) = NULL;
1011
1012 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1013 if (!uinfo)
1014 return -ENOMEM;
1015
1016 if (kctl->info(kctl, uinfo))
1017 return 0;
1018 strcpy(str, ptr->name);
1019 if (!strcmp(str, "Master"))
1020 strcpy(str, "Mix");
1021 if (!strcmp(str, "Master Mono"))
1022 strcpy(str, "Mix Mono");
1023 slot.capture_item = 0;
1024 if (!strcmp(uinfo->value.enumerated.name, str)) {
1025 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1026 } else {
1027 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1028 uinfo->value.enumerated.item = slot.capture_item;
1029 if (kctl->info(kctl, uinfo))
1030 return 0;
1031 if (!strcmp(uinfo->value.enumerated.name, str)) {
1032 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1033 break;
1034 }
1035 }
1036 }
1037 }
1038 if (slot.present != 0) {
1039 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1040 if (! pslot)
1041 return -ENOMEM;
1042 *pslot = slot;
1043 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1044 pslot->assigned = ptr;
1045 pslot->allocated = ptr_allocated;
1046 rslot = &mixer->slots[ptr->oss_id];
1047 mixer_slot_clear(rslot);
1048 rslot->stereo = slot.channels > 1 ? 1 : 0;
1049 rslot->get_volume = snd_mixer_oss_get_volume1;
1050 rslot->put_volume = snd_mixer_oss_put_volume1;
1051 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1052 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1053 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1054 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1055 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1056 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1057 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1058 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1059 mixer->mask_recsrc |= 1 << ptr->oss_id;
1060 }
1061 rslot->private_data = pslot;
1062 rslot->private_free = snd_mixer_oss_slot_free;
1063 return 1;
1064 }
1065 return 0;
1066}
1067
1068#ifdef CONFIG_SND_PROC_FS
1069/*
1070 */
1071#define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1072static const char * const oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1073 MIXER_VOL(VOLUME),
1074 MIXER_VOL(BASS),
1075 MIXER_VOL(TREBLE),
1076 MIXER_VOL(SYNTH),
1077 MIXER_VOL(PCM),
1078 MIXER_VOL(SPEAKER),
1079 MIXER_VOL(LINE),
1080 MIXER_VOL(MIC),
1081 MIXER_VOL(CD),
1082 MIXER_VOL(IMIX),
1083 MIXER_VOL(ALTPCM),
1084 MIXER_VOL(RECLEV),
1085 MIXER_VOL(IGAIN),
1086 MIXER_VOL(OGAIN),
1087 MIXER_VOL(LINE1),
1088 MIXER_VOL(LINE2),
1089 MIXER_VOL(LINE3),
1090 MIXER_VOL(DIGITAL1),
1091 MIXER_VOL(DIGITAL2),
1092 MIXER_VOL(DIGITAL3),
1093 MIXER_VOL(PHONEIN),
1094 MIXER_VOL(PHONEOUT),
1095 MIXER_VOL(VIDEO),
1096 MIXER_VOL(RADIO),
1097 MIXER_VOL(MONITOR),
1098};
1099
1100/*
1101 * /proc interface
1102 */
1103
1104static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1105 struct snd_info_buffer *buffer)
1106{
1107 struct snd_mixer_oss *mixer = entry->private_data;
1108 int i;
1109
1110 guard(mutex)(&mixer->reg_mutex);
1111 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1112 struct slot *p;
1113
1114 if (! oss_mixer_names[i])
1115 continue;
1116 p = (struct slot *)mixer->slots[i].private_data;
1117 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1118 if (p && p->assigned)
1119 snd_iprintf(buffer, "\"%s\" %d\n",
1120 p->assigned->name,
1121 p->assigned->index);
1122 else
1123 snd_iprintf(buffer, "\"\" 0\n");
1124 }
1125}
1126
1127static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1128 struct snd_info_buffer *buffer)
1129{
1130 struct snd_mixer_oss *mixer = entry->private_data;
1131 char line[128], str[32], idxstr[16];
1132 const char *cptr;
1133 unsigned int idx;
1134 int ch;
1135 struct snd_mixer_oss_assign_table *tbl;
1136 struct slot *slot;
1137
1138 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1139 cptr = snd_info_get_str(str, line, sizeof(str));
1140 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1141 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1142 break;
1143 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1144 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1145 str);
1146 continue;
1147 }
1148 cptr = snd_info_get_str(str, cptr, sizeof(str));
1149 if (! *str) {
1150 /* remove the entry */
1151 scoped_guard(mutex, &mixer->reg_mutex)
1152 mixer_slot_clear(&mixer->slots[ch]);
1153 continue;
1154 }
1155 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1156 idx = simple_strtoul(idxstr, NULL, 10);
1157 if (idx >= 0x4000) { /* too big */
1158 pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
1159 continue;
1160 }
1161 scoped_guard(mutex, &mixer->reg_mutex) {
1162 slot = (struct slot *)mixer->slots[ch].private_data;
1163 if (slot && slot->assigned &&
1164 slot->assigned->index == idx && !strcmp(slot->assigned->name, str))
1165 /* not changed */
1166 break;
1167 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1168 if (!tbl)
1169 break;
1170 tbl->oss_id = ch;
1171 tbl->name = kstrdup(str, GFP_KERNEL);
1172 if (!tbl->name) {
1173 kfree(tbl);
1174 break;
1175 }
1176 tbl->index = idx;
1177 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1178 kfree(tbl->name);
1179 kfree(tbl);
1180 }
1181 }
1182 }
1183}
1184
1185static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1186{
1187 struct snd_info_entry *entry;
1188
1189 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1190 mixer->card->proc_root);
1191 if (! entry)
1192 return;
1193 entry->content = SNDRV_INFO_CONTENT_TEXT;
1194 entry->mode = S_IFREG | 0644;
1195 entry->c.text.read = snd_mixer_oss_proc_read;
1196 entry->c.text.write = snd_mixer_oss_proc_write;
1197 entry->private_data = mixer;
1198 if (snd_info_register(entry) < 0) {
1199 snd_info_free_entry(entry);
1200 entry = NULL;
1201 }
1202 mixer->proc_entry = entry;
1203}
1204
1205static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1206{
1207 snd_info_free_entry(mixer->proc_entry);
1208 mixer->proc_entry = NULL;
1209}
1210#else /* !CONFIG_SND_PROC_FS */
1211#define snd_mixer_oss_proc_init(mix)
1212#define snd_mixer_oss_proc_done(mix)
1213#endif /* CONFIG_SND_PROC_FS */
1214
1215static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1216{
1217 static const struct snd_mixer_oss_assign_table table[] = {
1218 { SOUND_MIXER_VOLUME, "Master", 0 },
1219 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1220 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1221 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1222 { SOUND_MIXER_SYNTH, "Synth", 0 },
1223 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1224 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1225 { SOUND_MIXER_PCM, "PCM", 0 },
1226 { SOUND_MIXER_SPEAKER, "Beep", 0 },
1227 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
1228 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1229 { SOUND_MIXER_LINE, "Line", 0 },
1230 { SOUND_MIXER_MIC, "Mic", 0 },
1231 { SOUND_MIXER_CD, "CD", 0 },
1232 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1233 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1234 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1235 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1236 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1237 { SOUND_MIXER_IGAIN, "Capture", 0 },
1238 { SOUND_MIXER_OGAIN, "Playback", 0 },
1239 { SOUND_MIXER_LINE1, "Aux", 0 },
1240 { SOUND_MIXER_LINE2, "Aux", 1 },
1241 { SOUND_MIXER_LINE3, "Aux", 2 },
1242 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1243 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1244 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1245 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1246 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1247 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1248 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1249 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1250 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1251 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1252 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1253 { SOUND_MIXER_VIDEO, "Video", 0 },
1254 { SOUND_MIXER_RADIO, "Radio", 0 },
1255 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1256 };
1257 unsigned int idx;
1258
1259 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1260 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1261 if (mixer->mask_recsrc) {
1262 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1263 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1264 }
1265}
1266
1267/*
1268 *
1269 */
1270
1271static int snd_mixer_oss_free1(void *private)
1272{
1273 struct snd_mixer_oss *mixer = private;
1274 struct snd_card *card;
1275 int idx;
1276
1277 if (!mixer)
1278 return 0;
1279 card = mixer->card;
1280 if (snd_BUG_ON(mixer != card->mixer_oss))
1281 return -ENXIO;
1282 card->mixer_oss = NULL;
1283 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1284 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1285 if (chn->private_free)
1286 chn->private_free(chn);
1287 }
1288 kfree(mixer);
1289 return 0;
1290}
1291
1292static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1293{
1294 struct snd_mixer_oss *mixer;
1295
1296 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1297 int idx, err;
1298
1299 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1300 if (mixer == NULL)
1301 return -ENOMEM;
1302 mutex_init(&mixer->reg_mutex);
1303 err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1304 card, 0,
1305 &snd_mixer_oss_f_ops, card);
1306 if (err < 0) {
1307 dev_err(card->dev,
1308 "unable to register OSS mixer device %i:%i\n",
1309 card->number, 0);
1310 kfree(mixer);
1311 return err;
1312 }
1313 mixer->oss_dev_alloc = 1;
1314 mixer->card = card;
1315 if (*card->mixername)
1316 strscpy(mixer->name, card->mixername, sizeof(mixer->name));
1317 else
1318 snprintf(mixer->name, sizeof(mixer->name),
1319 "mixer%i", card->number);
1320#ifdef SNDRV_OSS_INFO_DEV_MIXERS
1321 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1322 card->number,
1323 mixer->name);
1324#endif
1325 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1326 mixer->slots[idx].number = idx;
1327 card->mixer_oss = mixer;
1328 snd_mixer_oss_build(mixer);
1329 snd_mixer_oss_proc_init(mixer);
1330 } else {
1331 mixer = card->mixer_oss;
1332 if (mixer == NULL)
1333 return 0;
1334 if (mixer->oss_dev_alloc) {
1335#ifdef SNDRV_OSS_INFO_DEV_MIXERS
1336 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1337#endif
1338 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1339 mixer->oss_dev_alloc = 0;
1340 }
1341 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1342 return 0;
1343 snd_mixer_oss_proc_done(mixer);
1344 return snd_mixer_oss_free1(mixer);
1345 }
1346 return 0;
1347}
1348
1349static int __init alsa_mixer_oss_init(void)
1350{
1351 struct snd_card *card;
1352 int idx;
1353
1354 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1355 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1356 card = snd_card_ref(idx);
1357 if (card) {
1358 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_REGISTER);
1359 snd_card_unref(card);
1360 }
1361 }
1362 return 0;
1363}
1364
1365static void __exit alsa_mixer_oss_exit(void)
1366{
1367 struct snd_card *card;
1368 int idx;
1369
1370 snd_mixer_oss_notify_callback = NULL;
1371 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1372 card = snd_card_ref(idx);
1373 if (card) {
1374 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_FREE);
1375 snd_card_unref(card);
1376 }
1377 }
1378}
1379
1380module_init(alsa_mixer_oss_init)
1381module_exit(alsa_mixer_oss_exit)