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 | |
22 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>" ); |
23 | MODULE_DESCRIPTION("Mixer OSS emulation for ALSA." ); |
24 | MODULE_LICENSE("GPL" ); |
25 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER); |
26 | |
27 | static 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, filp: file); |
34 | if (err < 0) |
35 | return err; |
36 | |
37 | card = snd_lookup_oss_minor_data(minor: 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(size: 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(module: card->module)) { |
60 | kfree(objp: 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 | |
69 | static 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(module: fmixer->card->module); |
76 | snd_card_file_remove(card: fmixer->card, file); |
77 | kfree(objp: fmixer); |
78 | } |
79 | return 0; |
80 | } |
81 | |
82 | static 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(p: info.id, q: mixer && mixer->id[0] ? mixer->id : card->driver, size: sizeof(info.id)); |
91 | strscpy(p: info.name, q: mixer && mixer->name[0] ? mixer->name : card->mixername, size: sizeof(info.name)); |
92 | info.modify_counter = card->mixer_oss_change_count; |
93 | if (copy_to_user(to: _info, from: &info, n: sizeof(info))) |
94 | return -EFAULT; |
95 | return 0; |
96 | } |
97 | |
98 | static 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(p: info.id, q: mixer && mixer->id[0] ? mixer->id : card->driver, size: sizeof(info.id)); |
107 | strscpy(p: info.name, q: mixer && mixer->name[0] ? mixer->name : card->mixername, size: sizeof(info.name)); |
108 | if (copy_to_user(to: _info, from: &info, n: sizeof(info))) |
109 | return -EFAULT; |
110 | return 0; |
111 | } |
112 | |
113 | static 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 | |
125 | static 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 | mutex_lock(&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 | mutex_unlock(lock: &mixer->reg_mutex); |
140 | return result; |
141 | } |
142 | |
143 | static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer) |
144 | { |
145 | struct snd_mixer_oss *mixer = fmixer->mixer; |
146 | struct snd_mixer_oss_slot *pslot; |
147 | int result = 0, chn; |
148 | |
149 | if (mixer == NULL) |
150 | return -EIO; |
151 | mutex_lock(&mixer->reg_mutex); |
152 | for (chn = 0; chn < 31; chn++) { |
153 | pslot = &mixer->slots[chn]; |
154 | if (pslot->put_volume && pslot->stereo) |
155 | result |= 1 << chn; |
156 | } |
157 | mutex_unlock(lock: &mixer->reg_mutex); |
158 | return result; |
159 | } |
160 | |
161 | static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer) |
162 | { |
163 | struct snd_mixer_oss *mixer = fmixer->mixer; |
164 | int result = 0; |
165 | |
166 | if (mixer == NULL) |
167 | return -EIO; |
168 | mutex_lock(&mixer->reg_mutex); |
169 | if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ |
170 | result = mixer->mask_recsrc; |
171 | } else { |
172 | struct snd_mixer_oss_slot *pslot; |
173 | int chn; |
174 | for (chn = 0; chn < 31; chn++) { |
175 | pslot = &mixer->slots[chn]; |
176 | if (pslot->put_recsrc) |
177 | result |= 1 << chn; |
178 | } |
179 | } |
180 | mutex_unlock(lock: &mixer->reg_mutex); |
181 | return result; |
182 | } |
183 | |
184 | static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer) |
185 | { |
186 | struct snd_mixer_oss *mixer = fmixer->mixer; |
187 | int result = 0; |
188 | |
189 | if (mixer == NULL) |
190 | return -EIO; |
191 | mutex_lock(&mixer->reg_mutex); |
192 | if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ |
193 | unsigned int index; |
194 | result = mixer->get_recsrc(fmixer, &index); |
195 | if (result < 0) |
196 | goto unlock; |
197 | result = 1 << index; |
198 | } else { |
199 | struct snd_mixer_oss_slot *pslot; |
200 | int chn; |
201 | for (chn = 0; chn < 31; chn++) { |
202 | pslot = &mixer->slots[chn]; |
203 | if (pslot->get_recsrc) { |
204 | int active = 0; |
205 | pslot->get_recsrc(fmixer, pslot, &active); |
206 | if (active) |
207 | result |= 1 << chn; |
208 | } |
209 | } |
210 | } |
211 | mixer->oss_recsrc = result; |
212 | unlock: |
213 | mutex_unlock(lock: &mixer->reg_mutex); |
214 | return result; |
215 | } |
216 | |
217 | static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc) |
218 | { |
219 | struct snd_mixer_oss *mixer = fmixer->mixer; |
220 | struct snd_mixer_oss_slot *pslot; |
221 | int chn, active; |
222 | unsigned int index; |
223 | int result = 0; |
224 | |
225 | if (mixer == NULL) |
226 | return -EIO; |
227 | mutex_lock(&mixer->reg_mutex); |
228 | if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */ |
229 | if (recsrc & ~mixer->oss_recsrc) |
230 | recsrc &= ~mixer->oss_recsrc; |
231 | mixer->put_recsrc(fmixer, ffz(~recsrc)); |
232 | mixer->get_recsrc(fmixer, &index); |
233 | result = 1 << index; |
234 | } |
235 | for (chn = 0; chn < 31; chn++) { |
236 | pslot = &mixer->slots[chn]; |
237 | if (pslot->put_recsrc) { |
238 | active = (recsrc & (1 << chn)) ? 1 : 0; |
239 | pslot->put_recsrc(fmixer, pslot, active); |
240 | } |
241 | } |
242 | if (! result) { |
243 | for (chn = 0; chn < 31; chn++) { |
244 | pslot = &mixer->slots[chn]; |
245 | if (pslot->get_recsrc) { |
246 | active = 0; |
247 | pslot->get_recsrc(fmixer, pslot, &active); |
248 | if (active) |
249 | result |= 1 << chn; |
250 | } |
251 | } |
252 | } |
253 | mutex_unlock(lock: &mixer->reg_mutex); |
254 | return result; |
255 | } |
256 | |
257 | static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot) |
258 | { |
259 | struct snd_mixer_oss *mixer = fmixer->mixer; |
260 | struct snd_mixer_oss_slot *pslot; |
261 | int result = 0, left, right; |
262 | |
263 | if (mixer == NULL || slot > 30) |
264 | return -EIO; |
265 | mutex_lock(&mixer->reg_mutex); |
266 | pslot = &mixer->slots[slot]; |
267 | left = pslot->volume[0]; |
268 | right = pslot->volume[1]; |
269 | if (pslot->get_volume) |
270 | result = pslot->get_volume(fmixer, pslot, &left, &right); |
271 | if (!pslot->stereo) |
272 | right = left; |
273 | if (snd_BUG_ON(left < 0 || left > 100)) { |
274 | result = -EIO; |
275 | goto unlock; |
276 | } |
277 | if (snd_BUG_ON(right < 0 || right > 100)) { |
278 | result = -EIO; |
279 | goto unlock; |
280 | } |
281 | if (result >= 0) { |
282 | pslot->volume[0] = left; |
283 | pslot->volume[1] = right; |
284 | result = (left & 0xff) | ((right & 0xff) << 8); |
285 | } |
286 | unlock: |
287 | mutex_unlock(lock: &mixer->reg_mutex); |
288 | return result; |
289 | } |
290 | |
291 | static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer, |
292 | int slot, int volume) |
293 | { |
294 | struct snd_mixer_oss *mixer = fmixer->mixer; |
295 | struct snd_mixer_oss_slot *pslot; |
296 | int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff; |
297 | |
298 | if (mixer == NULL || slot > 30) |
299 | return -EIO; |
300 | mutex_lock(&mixer->reg_mutex); |
301 | pslot = &mixer->slots[slot]; |
302 | if (left > 100) |
303 | left = 100; |
304 | if (right > 100) |
305 | right = 100; |
306 | if (!pslot->stereo) |
307 | right = left; |
308 | if (pslot->put_volume) |
309 | result = pslot->put_volume(fmixer, pslot, left, right); |
310 | if (result < 0) |
311 | goto unlock; |
312 | pslot->volume[0] = left; |
313 | pslot->volume[1] = right; |
314 | result = (left & 0xff) | ((right & 0xff) << 8); |
315 | unlock: |
316 | mutex_unlock(lock: &mixer->reg_mutex); |
317 | return result; |
318 | } |
319 | |
320 | static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg) |
321 | { |
322 | void __user *argp = (void __user *)arg; |
323 | int __user *p = argp; |
324 | int tmp; |
325 | |
326 | if (snd_BUG_ON(!fmixer)) |
327 | return -ENXIO; |
328 | if (((cmd >> 8) & 0xff) == 'M') { |
329 | switch (cmd) { |
330 | case SOUND_MIXER_INFO: |
331 | return snd_mixer_oss_info(fmixer, info: argp); |
332 | case SOUND_OLD_MIXER_INFO: |
333 | return snd_mixer_oss_info_obsolete(fmixer, info: argp); |
334 | case SOUND_MIXER_WRITE_RECSRC: |
335 | if (get_user(tmp, p)) |
336 | return -EFAULT; |
337 | tmp = snd_mixer_oss_set_recsrc(fmixer, recsrc: tmp); |
338 | if (tmp < 0) |
339 | return tmp; |
340 | return put_user(tmp, p); |
341 | case OSS_GETVERSION: |
342 | return put_user(SNDRV_OSS_VERSION, p); |
343 | case OSS_ALSAEMULVER: |
344 | return put_user(1, p); |
345 | case SOUND_MIXER_READ_DEVMASK: |
346 | tmp = snd_mixer_oss_devmask(fmixer); |
347 | if (tmp < 0) |
348 | return tmp; |
349 | return put_user(tmp, p); |
350 | case SOUND_MIXER_READ_STEREODEVS: |
351 | tmp = snd_mixer_oss_stereodevs(fmixer); |
352 | if (tmp < 0) |
353 | return tmp; |
354 | return put_user(tmp, p); |
355 | case SOUND_MIXER_READ_RECMASK: |
356 | tmp = snd_mixer_oss_recmask(fmixer); |
357 | if (tmp < 0) |
358 | return tmp; |
359 | return put_user(tmp, p); |
360 | case SOUND_MIXER_READ_CAPS: |
361 | tmp = snd_mixer_oss_caps(fmixer); |
362 | if (tmp < 0) |
363 | return tmp; |
364 | return put_user(tmp, p); |
365 | case SOUND_MIXER_READ_RECSRC: |
366 | tmp = snd_mixer_oss_get_recsrc(fmixer); |
367 | if (tmp < 0) |
368 | return tmp; |
369 | return put_user(tmp, p); |
370 | } |
371 | } |
372 | if (cmd & SIOC_IN) { |
373 | if (get_user(tmp, p)) |
374 | return -EFAULT; |
375 | tmp = snd_mixer_oss_set_volume(fmixer, slot: cmd & 0xff, volume: tmp); |
376 | if (tmp < 0) |
377 | return tmp; |
378 | return put_user(tmp, p); |
379 | } else if (cmd & SIOC_OUT) { |
380 | tmp = snd_mixer_oss_get_volume(fmixer, slot: cmd & 0xff); |
381 | if (tmp < 0) |
382 | return tmp; |
383 | return put_user(tmp, p); |
384 | } |
385 | return -ENXIO; |
386 | } |
387 | |
388 | static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
389 | { |
390 | return snd_mixer_oss_ioctl1(fmixer: file->private_data, cmd, arg); |
391 | } |
392 | |
393 | int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg) |
394 | { |
395 | struct snd_mixer_oss_file fmixer; |
396 | |
397 | if (snd_BUG_ON(!card)) |
398 | return -ENXIO; |
399 | if (card->mixer_oss == NULL) |
400 | return -ENXIO; |
401 | memset(&fmixer, 0, sizeof(fmixer)); |
402 | fmixer.card = card; |
403 | fmixer.mixer = card->mixer_oss; |
404 | return snd_mixer_oss_ioctl1(fmixer: &fmixer, cmd, arg); |
405 | } |
406 | EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); |
407 | |
408 | #ifdef CONFIG_COMPAT |
409 | /* all compatible */ |
410 | static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd, |
411 | unsigned long arg) |
412 | { |
413 | return snd_mixer_oss_ioctl1(fmixer: file->private_data, cmd, |
414 | arg: (unsigned long)compat_ptr(uptr: arg)); |
415 | } |
416 | #else |
417 | #define snd_mixer_oss_ioctl_compat NULL |
418 | #endif |
419 | |
420 | /* |
421 | * REGISTRATION PART |
422 | */ |
423 | |
424 | static const struct file_operations snd_mixer_oss_f_ops = |
425 | { |
426 | .owner = THIS_MODULE, |
427 | .open = snd_mixer_oss_open, |
428 | .release = snd_mixer_oss_release, |
429 | .llseek = no_llseek, |
430 | .unlocked_ioctl = snd_mixer_oss_ioctl, |
431 | .compat_ioctl = snd_mixer_oss_ioctl_compat, |
432 | }; |
433 | |
434 | /* |
435 | * utilities |
436 | */ |
437 | |
438 | static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax) |
439 | { |
440 | long orange = omax - omin, nrange = nmax - nmin; |
441 | |
442 | if (orange == 0) |
443 | return 0; |
444 | return DIV_ROUND_CLOSEST(nrange * (val - omin), orange) + nmin; |
445 | } |
446 | |
447 | /* convert from alsa native to oss values (0-100) */ |
448 | static long snd_mixer_oss_conv1(long val, long min, long max, int *old) |
449 | { |
450 | if (val == snd_mixer_oss_conv(val: *old, omin: 0, omax: 100, nmin: min, nmax: max)) |
451 | return *old; |
452 | return snd_mixer_oss_conv(val, omin: min, omax: max, nmin: 0, nmax: 100); |
453 | } |
454 | |
455 | /* convert from oss to alsa native values */ |
456 | static long snd_mixer_oss_conv2(long val, long min, long max) |
457 | { |
458 | return snd_mixer_oss_conv(val, omin: 0, omax: 100, nmin: min, nmax: max); |
459 | } |
460 | |
461 | #if 0 |
462 | static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot) |
463 | { |
464 | struct snd_mixer_oss *mixer = card->mixer_oss; |
465 | if (mixer) |
466 | mixer->mask_recsrc |= 1 << slot; |
467 | } |
468 | |
469 | static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot) |
470 | { |
471 | struct snd_mixer_oss *mixer = card->mixer_oss; |
472 | if (mixer && (mixer->mask_recsrc & (1 << slot))) |
473 | return 1; |
474 | return 0; |
475 | } |
476 | #endif |
477 | |
478 | #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250 |
479 | |
480 | #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0 |
481 | #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1 |
482 | #define SNDRV_MIXER_OSS_ITEM_GROUTE 2 |
483 | #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3 |
484 | #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4 |
485 | #define SNDRV_MIXER_OSS_ITEM_PROUTE 5 |
486 | #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6 |
487 | #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7 |
488 | #define SNDRV_MIXER_OSS_ITEM_CROUTE 8 |
489 | #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9 |
490 | #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10 |
491 | |
492 | #define SNDRV_MIXER_OSS_ITEM_COUNT 11 |
493 | |
494 | #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0) |
495 | #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1) |
496 | #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2) |
497 | #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3) |
498 | #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4) |
499 | #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5) |
500 | #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6) |
501 | #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7) |
502 | #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8) |
503 | #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9) |
504 | #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10) |
505 | |
506 | struct slot { |
507 | unsigned int signature; |
508 | unsigned int present; |
509 | unsigned int channels; |
510 | unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT]; |
511 | unsigned int capture_item; |
512 | const struct snd_mixer_oss_assign_table *assigned; |
513 | unsigned int allocated: 1; |
514 | }; |
515 | |
516 | #define ID_UNKNOWN ((unsigned int)-1) |
517 | |
518 | static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index) |
519 | { |
520 | struct snd_card *card = mixer->card; |
521 | struct snd_ctl_elem_id id; |
522 | |
523 | memset(&id, 0, sizeof(id)); |
524 | id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; |
525 | strscpy(p: id.name, q: name, size: sizeof(id.name)); |
526 | id.index = index; |
527 | return snd_ctl_find_id_locked(card, id: &id); |
528 | } |
529 | |
530 | static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer, |
531 | struct snd_mixer_oss_slot *pslot, |
532 | unsigned int numid, |
533 | int *left, int *right) |
534 | { |
535 | struct snd_ctl_elem_info *uinfo; |
536 | struct snd_ctl_elem_value *uctl; |
537 | struct snd_kcontrol *kctl; |
538 | struct snd_card *card = fmixer->card; |
539 | |
540 | if (numid == ID_UNKNOWN) |
541 | return; |
542 | down_read(sem: &card->controls_rwsem); |
543 | kctl = snd_ctl_find_numid_locked(card, numid); |
544 | if (!kctl) { |
545 | up_read(sem: &card->controls_rwsem); |
546 | return; |
547 | } |
548 | uinfo = kzalloc(size: sizeof(*uinfo), GFP_KERNEL); |
549 | uctl = kzalloc(size: sizeof(*uctl), GFP_KERNEL); |
550 | if (uinfo == NULL || uctl == NULL) |
551 | goto __unalloc; |
552 | if (kctl->info(kctl, uinfo)) |
553 | goto __unalloc; |
554 | if (kctl->get(kctl, uctl)) |
555 | goto __unalloc; |
556 | if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && |
557 | uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) |
558 | goto __unalloc; |
559 | *left = snd_mixer_oss_conv1(val: uctl->value.integer.value[0], min: uinfo->value.integer.min, max: uinfo->value.integer.max, old: &pslot->volume[0]); |
560 | if (uinfo->count > 1) |
561 | *right = snd_mixer_oss_conv1(val: uctl->value.integer.value[1], min: uinfo->value.integer.min, max: uinfo->value.integer.max, old: &pslot->volume[1]); |
562 | __unalloc: |
563 | up_read(sem: &card->controls_rwsem); |
564 | kfree(objp: uctl); |
565 | kfree(objp: uinfo); |
566 | } |
567 | |
568 | static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer, |
569 | struct snd_mixer_oss_slot *pslot, |
570 | unsigned int numid, |
571 | int *left, int *right, |
572 | int route) |
573 | { |
574 | struct snd_ctl_elem_info *uinfo; |
575 | struct snd_ctl_elem_value *uctl; |
576 | struct snd_kcontrol *kctl; |
577 | struct snd_card *card = fmixer->card; |
578 | |
579 | if (numid == ID_UNKNOWN) |
580 | return; |
581 | down_read(sem: &card->controls_rwsem); |
582 | kctl = snd_ctl_find_numid_locked(card, numid); |
583 | if (!kctl) { |
584 | up_read(sem: &card->controls_rwsem); |
585 | return; |
586 | } |
587 | uinfo = kzalloc(size: sizeof(*uinfo), GFP_KERNEL); |
588 | uctl = kzalloc(size: sizeof(*uctl), GFP_KERNEL); |
589 | if (uinfo == NULL || uctl == NULL) |
590 | goto __unalloc; |
591 | if (kctl->info(kctl, uinfo)) |
592 | goto __unalloc; |
593 | if (kctl->get(kctl, uctl)) |
594 | goto __unalloc; |
595 | if (!uctl->value.integer.value[0]) { |
596 | *left = 0; |
597 | if (uinfo->count == 1) |
598 | *right = 0; |
599 | } |
600 | if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1]) |
601 | *right = 0; |
602 | __unalloc: |
603 | up_read(sem: &card->controls_rwsem); |
604 | kfree(objp: uctl); |
605 | kfree(objp: uinfo); |
606 | } |
607 | |
608 | static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer, |
609 | struct snd_mixer_oss_slot *pslot, |
610 | int *left, int *right) |
611 | { |
612 | struct slot *slot = pslot->private_data; |
613 | |
614 | *left = *right = 100; |
615 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { |
616 | snd_mixer_oss_get_volume1_vol(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); |
617 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { |
618 | snd_mixer_oss_get_volume1_vol(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); |
619 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { |
620 | snd_mixer_oss_get_volume1_vol(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); |
621 | } |
622 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { |
623 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, route: 0); |
624 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { |
625 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, route: 0); |
626 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { |
627 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, route: 1); |
628 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { |
629 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, route: 1); |
630 | } |
631 | return 0; |
632 | } |
633 | |
634 | static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer, |
635 | struct snd_mixer_oss_slot *pslot, |
636 | unsigned int numid, |
637 | int left, int right) |
638 | { |
639 | struct snd_ctl_elem_info *uinfo; |
640 | struct snd_ctl_elem_value *uctl; |
641 | struct snd_kcontrol *kctl; |
642 | struct snd_card *card = fmixer->card; |
643 | int res; |
644 | |
645 | if (numid == ID_UNKNOWN) |
646 | return; |
647 | down_read(sem: &card->controls_rwsem); |
648 | kctl = snd_ctl_find_numid_locked(card, numid); |
649 | if (!kctl) { |
650 | up_read(sem: &card->controls_rwsem); |
651 | return; |
652 | } |
653 | uinfo = kzalloc(size: sizeof(*uinfo), GFP_KERNEL); |
654 | uctl = kzalloc(size: sizeof(*uctl), GFP_KERNEL); |
655 | if (uinfo == NULL || uctl == NULL) |
656 | goto __unalloc; |
657 | if (kctl->info(kctl, uinfo)) |
658 | goto __unalloc; |
659 | if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && |
660 | uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) |
661 | goto __unalloc; |
662 | uctl->value.integer.value[0] = snd_mixer_oss_conv2(val: left, min: uinfo->value.integer.min, max: uinfo->value.integer.max); |
663 | if (uinfo->count > 1) |
664 | uctl->value.integer.value[1] = snd_mixer_oss_conv2(val: right, min: uinfo->value.integer.min, max: uinfo->value.integer.max); |
665 | res = kctl->put(kctl, uctl); |
666 | if (res < 0) |
667 | goto __unalloc; |
668 | if (res > 0) |
669 | snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, id: &kctl->id); |
670 | __unalloc: |
671 | up_read(sem: &card->controls_rwsem); |
672 | kfree(objp: uctl); |
673 | kfree(objp: uinfo); |
674 | } |
675 | |
676 | static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer, |
677 | struct snd_mixer_oss_slot *pslot, |
678 | unsigned int numid, |
679 | int left, int right, |
680 | int route) |
681 | { |
682 | struct snd_ctl_elem_info *uinfo; |
683 | struct snd_ctl_elem_value *uctl; |
684 | struct snd_kcontrol *kctl; |
685 | struct snd_card *card = fmixer->card; |
686 | int res; |
687 | |
688 | if (numid == ID_UNKNOWN) |
689 | return; |
690 | down_read(sem: &card->controls_rwsem); |
691 | kctl = snd_ctl_find_numid_locked(card, numid); |
692 | if (!kctl) { |
693 | up_read(sem: &card->controls_rwsem); |
694 | return; |
695 | } |
696 | uinfo = kzalloc(size: sizeof(*uinfo), GFP_KERNEL); |
697 | uctl = kzalloc(size: sizeof(*uctl), GFP_KERNEL); |
698 | if (uinfo == NULL || uctl == NULL) |
699 | goto __unalloc; |
700 | if (kctl->info(kctl, uinfo)) |
701 | goto __unalloc; |
702 | if (uinfo->count > 1) { |
703 | uctl->value.integer.value[0] = left > 0 ? 1 : 0; |
704 | uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0; |
705 | if (route) { |
706 | uctl->value.integer.value[1] = |
707 | uctl->value.integer.value[2] = 0; |
708 | } |
709 | } else { |
710 | uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0; |
711 | } |
712 | res = kctl->put(kctl, uctl); |
713 | if (res < 0) |
714 | goto __unalloc; |
715 | if (res > 0) |
716 | snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, id: &kctl->id); |
717 | __unalloc: |
718 | up_read(sem: &card->controls_rwsem); |
719 | kfree(objp: uctl); |
720 | kfree(objp: uinfo); |
721 | } |
722 | |
723 | static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer, |
724 | struct snd_mixer_oss_slot *pslot, |
725 | int left, int right) |
726 | { |
727 | struct slot *slot = pslot->private_data; |
728 | |
729 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { |
730 | snd_mixer_oss_put_volume1_vol(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); |
731 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) |
732 | snd_mixer_oss_put_volume1_vol(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); |
733 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) { |
734 | snd_mixer_oss_put_volume1_vol(fmixer, pslot, |
735 | numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); |
736 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { |
737 | snd_mixer_oss_put_volume1_vol(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); |
738 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { |
739 | snd_mixer_oss_put_volume1_vol(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); |
740 | } |
741 | if (left || right) { |
742 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) |
743 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, route: 0); |
744 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) |
745 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, route: 0); |
746 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) |
747 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, route: 0); |
748 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) |
749 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, route: 1); |
750 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) |
751 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, route: 1); |
752 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) |
753 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, route: 1); |
754 | } else { |
755 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { |
756 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, route: 0); |
757 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { |
758 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, route: 0); |
759 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { |
760 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, route: 0); |
761 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { |
762 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, route: 1); |
763 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { |
764 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, route: 1); |
765 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { |
766 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, route: 1); |
767 | } |
768 | } |
769 | return 0; |
770 | } |
771 | |
772 | static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer, |
773 | struct snd_mixer_oss_slot *pslot, |
774 | int *active) |
775 | { |
776 | struct slot *slot = pslot->private_data; |
777 | int left, right; |
778 | |
779 | left = right = 1; |
780 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left: &left, right: &right, route: 0); |
781 | *active = (left || right) ? 1 : 0; |
782 | return 0; |
783 | } |
784 | |
785 | static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer, |
786 | struct snd_mixer_oss_slot *pslot, |
787 | int *active) |
788 | { |
789 | struct slot *slot = pslot->private_data; |
790 | int left, right; |
791 | |
792 | left = right = 1; |
793 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left: &left, right: &right, route: 1); |
794 | *active = (left || right) ? 1 : 0; |
795 | return 0; |
796 | } |
797 | |
798 | static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer, |
799 | struct snd_mixer_oss_slot *pslot, |
800 | int active) |
801 | { |
802 | struct slot *slot = pslot->private_data; |
803 | |
804 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left: active, right: active, route: 0); |
805 | return 0; |
806 | } |
807 | |
808 | static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer, |
809 | struct snd_mixer_oss_slot *pslot, |
810 | int active) |
811 | { |
812 | struct slot *slot = pslot->private_data; |
813 | |
814 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, numid: slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left: active, right: active, route: 1); |
815 | return 0; |
816 | } |
817 | |
818 | static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index) |
819 | { |
820 | struct snd_card *card = fmixer->card; |
821 | struct snd_mixer_oss *mixer = fmixer->mixer; |
822 | struct snd_kcontrol *kctl; |
823 | struct snd_mixer_oss_slot *pslot; |
824 | struct slot *slot; |
825 | struct snd_ctl_elem_info *uinfo; |
826 | struct snd_ctl_elem_value *uctl; |
827 | int err, idx; |
828 | |
829 | uinfo = kzalloc(size: sizeof(*uinfo), GFP_KERNEL); |
830 | uctl = kzalloc(size: sizeof(*uctl), GFP_KERNEL); |
831 | if (uinfo == NULL || uctl == NULL) { |
832 | err = -ENOMEM; |
833 | goto __free_only; |
834 | } |
835 | down_read(sem: &card->controls_rwsem); |
836 | kctl = snd_mixer_oss_test_id(mixer, name: "Capture Source" , index: 0); |
837 | if (! kctl) { |
838 | err = -ENOENT; |
839 | goto __unlock; |
840 | } |
841 | err = kctl->info(kctl, uinfo); |
842 | if (err < 0) |
843 | goto __unlock; |
844 | err = kctl->get(kctl, uctl); |
845 | if (err < 0) |
846 | goto __unlock; |
847 | for (idx = 0; idx < 32; idx++) { |
848 | if (!(mixer->mask_recsrc & (1 << idx))) |
849 | continue; |
850 | pslot = &mixer->slots[idx]; |
851 | slot = pslot->private_data; |
852 | if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) |
853 | continue; |
854 | if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) |
855 | continue; |
856 | if (slot->capture_item == uctl->value.enumerated.item[0]) { |
857 | *active_index = idx; |
858 | break; |
859 | } |
860 | } |
861 | err = 0; |
862 | __unlock: |
863 | up_read(sem: &card->controls_rwsem); |
864 | __free_only: |
865 | kfree(objp: uctl); |
866 | kfree(objp: uinfo); |
867 | return err; |
868 | } |
869 | |
870 | static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index) |
871 | { |
872 | struct snd_card *card = fmixer->card; |
873 | struct snd_mixer_oss *mixer = fmixer->mixer; |
874 | struct snd_kcontrol *kctl; |
875 | struct snd_mixer_oss_slot *pslot; |
876 | struct slot *slot = NULL; |
877 | struct snd_ctl_elem_info *uinfo; |
878 | struct snd_ctl_elem_value *uctl; |
879 | int err; |
880 | unsigned int idx; |
881 | |
882 | uinfo = kzalloc(size: sizeof(*uinfo), GFP_KERNEL); |
883 | uctl = kzalloc(size: sizeof(*uctl), GFP_KERNEL); |
884 | if (uinfo == NULL || uctl == NULL) { |
885 | err = -ENOMEM; |
886 | goto __free_only; |
887 | } |
888 | down_read(sem: &card->controls_rwsem); |
889 | kctl = snd_mixer_oss_test_id(mixer, name: "Capture Source" , index: 0); |
890 | if (! kctl) { |
891 | err = -ENOENT; |
892 | goto __unlock; |
893 | } |
894 | err = kctl->info(kctl, uinfo); |
895 | if (err < 0) |
896 | goto __unlock; |
897 | for (idx = 0; idx < 32; idx++) { |
898 | if (!(mixer->mask_recsrc & (1 << idx))) |
899 | continue; |
900 | pslot = &mixer->slots[idx]; |
901 | slot = pslot->private_data; |
902 | if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) |
903 | continue; |
904 | if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) |
905 | continue; |
906 | if (idx == active_index) |
907 | break; |
908 | slot = NULL; |
909 | } |
910 | if (! slot) |
911 | goto __unlock; |
912 | for (idx = 0; idx < uinfo->count; idx++) |
913 | uctl->value.enumerated.item[idx] = slot->capture_item; |
914 | err = kctl->put(kctl, uctl); |
915 | if (err > 0) |
916 | snd_ctl_notify(card: fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, id: &kctl->id); |
917 | err = 0; |
918 | __unlock: |
919 | up_read(sem: &card->controls_rwsem); |
920 | __free_only: |
921 | kfree(objp: uctl); |
922 | kfree(objp: uinfo); |
923 | return err; |
924 | } |
925 | |
926 | struct snd_mixer_oss_assign_table { |
927 | int oss_id; |
928 | const char *name; |
929 | int index; |
930 | }; |
931 | |
932 | static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item) |
933 | { |
934 | struct snd_ctl_elem_info *info; |
935 | struct snd_kcontrol *kcontrol; |
936 | struct snd_card *card = mixer->card; |
937 | int err; |
938 | |
939 | down_read(sem: &card->controls_rwsem); |
940 | kcontrol = snd_mixer_oss_test_id(mixer, name, index); |
941 | if (kcontrol == NULL) { |
942 | up_read(sem: &card->controls_rwsem); |
943 | return 0; |
944 | } |
945 | info = kmalloc(size: sizeof(*info), GFP_KERNEL); |
946 | if (! info) { |
947 | up_read(sem: &card->controls_rwsem); |
948 | return -ENOMEM; |
949 | } |
950 | err = kcontrol->info(kcontrol, info); |
951 | if (err < 0) { |
952 | up_read(sem: &card->controls_rwsem); |
953 | kfree(objp: info); |
954 | return err; |
955 | } |
956 | slot->numid[item] = kcontrol->id.numid; |
957 | up_read(sem: &card->controls_rwsem); |
958 | if (info->count > slot->channels) |
959 | slot->channels = info->count; |
960 | slot->present |= 1 << item; |
961 | kfree(objp: info); |
962 | return 0; |
963 | } |
964 | |
965 | static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn) |
966 | { |
967 | struct slot *p = chn->private_data; |
968 | if (p) { |
969 | if (p->allocated && p->assigned) { |
970 | kfree_const(x: p->assigned->name); |
971 | kfree_const(x: p->assigned); |
972 | } |
973 | kfree(objp: p); |
974 | } |
975 | } |
976 | |
977 | static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot) |
978 | { |
979 | int idx = rslot->number; /* remember this */ |
980 | if (rslot->private_free) |
981 | rslot->private_free(rslot); |
982 | memset(rslot, 0, sizeof(*rslot)); |
983 | rslot->number = idx; |
984 | } |
985 | |
986 | /* In a separate function to keep gcc 3.2 happy - do NOT merge this in |
987 | snd_mixer_oss_build_input! */ |
988 | static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer, |
989 | const struct snd_mixer_oss_assign_table *ptr, |
990 | struct slot *slot) |
991 | { |
992 | char str[64]; |
993 | int err; |
994 | |
995 | err = snd_mixer_oss_build_test(mixer, slot, name: ptr->name, index: ptr->index, |
996 | SNDRV_MIXER_OSS_ITEM_GLOBAL); |
997 | if (err) |
998 | return err; |
999 | sprintf(buf: str, fmt: "%s Switch" , ptr->name); |
1000 | err = snd_mixer_oss_build_test(mixer, slot, name: str, index: ptr->index, |
1001 | SNDRV_MIXER_OSS_ITEM_GSWITCH); |
1002 | if (err) |
1003 | return err; |
1004 | sprintf(buf: str, fmt: "%s Route" , ptr->name); |
1005 | err = snd_mixer_oss_build_test(mixer, slot, name: str, index: ptr->index, |
1006 | SNDRV_MIXER_OSS_ITEM_GROUTE); |
1007 | if (err) |
1008 | return err; |
1009 | sprintf(buf: str, fmt: "%s Volume" , ptr->name); |
1010 | err = snd_mixer_oss_build_test(mixer, slot, name: str, index: ptr->index, |
1011 | SNDRV_MIXER_OSS_ITEM_GVOLUME); |
1012 | if (err) |
1013 | return err; |
1014 | sprintf(buf: str, fmt: "%s Playback Switch" , ptr->name); |
1015 | err = snd_mixer_oss_build_test(mixer, slot, name: str, index: ptr->index, |
1016 | SNDRV_MIXER_OSS_ITEM_PSWITCH); |
1017 | if (err) |
1018 | return err; |
1019 | sprintf(buf: str, fmt: "%s Playback Route" , ptr->name); |
1020 | err = snd_mixer_oss_build_test(mixer, slot, name: str, index: ptr->index, |
1021 | SNDRV_MIXER_OSS_ITEM_PROUTE); |
1022 | if (err) |
1023 | return err; |
1024 | sprintf(buf: str, fmt: "%s Playback Volume" , ptr->name); |
1025 | err = snd_mixer_oss_build_test(mixer, slot, name: str, index: ptr->index, |
1026 | SNDRV_MIXER_OSS_ITEM_PVOLUME); |
1027 | if (err) |
1028 | return err; |
1029 | sprintf(buf: str, fmt: "%s Capture Switch" , ptr->name); |
1030 | err = snd_mixer_oss_build_test(mixer, slot, name: str, index: ptr->index, |
1031 | SNDRV_MIXER_OSS_ITEM_CSWITCH); |
1032 | if (err) |
1033 | return err; |
1034 | sprintf(buf: str, fmt: "%s Capture Route" , ptr->name); |
1035 | err = snd_mixer_oss_build_test(mixer, slot, name: str, index: ptr->index, |
1036 | SNDRV_MIXER_OSS_ITEM_CROUTE); |
1037 | if (err) |
1038 | return err; |
1039 | sprintf(buf: str, fmt: "%s Capture Volume" , ptr->name); |
1040 | err = snd_mixer_oss_build_test(mixer, slot, name: str, index: ptr->index, |
1041 | SNDRV_MIXER_OSS_ITEM_CVOLUME); |
1042 | if (err) |
1043 | return err; |
1044 | |
1045 | return 0; |
1046 | } |
1047 | |
1048 | /* |
1049 | * build an OSS mixer element. |
1050 | * ptr_allocated means the entry is dynamically allocated (change via proc file). |
1051 | * when replace_old = 1, the old entry is replaced with the new one. |
1052 | */ |
1053 | static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, |
1054 | const struct snd_mixer_oss_assign_table *ptr, |
1055 | int ptr_allocated, int replace_old) |
1056 | { |
1057 | struct slot slot; |
1058 | struct slot *pslot; |
1059 | struct snd_kcontrol *kctl; |
1060 | struct snd_mixer_oss_slot *rslot; |
1061 | char str[64]; |
1062 | |
1063 | /* check if already assigned */ |
1064 | if (mixer->slots[ptr->oss_id].get_volume && ! replace_old) |
1065 | return 0; |
1066 | |
1067 | memset(&slot, 0, sizeof(slot)); |
1068 | memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */ |
1069 | if (snd_mixer_oss_build_test_all(mixer, ptr, slot: &slot)) |
1070 | return 0; |
1071 | down_read(sem: &mixer->card->controls_rwsem); |
1072 | kctl = NULL; |
1073 | if (!ptr->index) |
1074 | kctl = snd_mixer_oss_test_id(mixer, name: "Capture Source" , index: 0); |
1075 | if (kctl) { |
1076 | struct snd_ctl_elem_info *uinfo; |
1077 | |
1078 | uinfo = kzalloc(size: sizeof(*uinfo), GFP_KERNEL); |
1079 | if (! uinfo) { |
1080 | up_read(sem: &mixer->card->controls_rwsem); |
1081 | return -ENOMEM; |
1082 | } |
1083 | |
1084 | if (kctl->info(kctl, uinfo)) { |
1085 | up_read(sem: &mixer->card->controls_rwsem); |
1086 | kfree(objp: uinfo); |
1087 | return 0; |
1088 | } |
1089 | strcpy(p: str, q: ptr->name); |
1090 | if (!strcmp(str, "Master" )) |
1091 | strcpy(p: str, q: "Mix" ); |
1092 | if (!strcmp(str, "Master Mono" )) |
1093 | strcpy(p: str, q: "Mix Mono" ); |
1094 | slot.capture_item = 0; |
1095 | if (!strcmp(uinfo->value.enumerated.name, str)) { |
1096 | slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; |
1097 | } else { |
1098 | for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) { |
1099 | uinfo->value.enumerated.item = slot.capture_item; |
1100 | if (kctl->info(kctl, uinfo)) { |
1101 | up_read(sem: &mixer->card->controls_rwsem); |
1102 | kfree(objp: uinfo); |
1103 | return 0; |
1104 | } |
1105 | if (!strcmp(uinfo->value.enumerated.name, str)) { |
1106 | slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; |
1107 | break; |
1108 | } |
1109 | } |
1110 | } |
1111 | kfree(objp: uinfo); |
1112 | } |
1113 | up_read(sem: &mixer->card->controls_rwsem); |
1114 | if (slot.present != 0) { |
1115 | pslot = kmalloc(size: sizeof(slot), GFP_KERNEL); |
1116 | if (! pslot) |
1117 | return -ENOMEM; |
1118 | *pslot = slot; |
1119 | pslot->signature = SNDRV_MIXER_OSS_SIGNATURE; |
1120 | pslot->assigned = ptr; |
1121 | pslot->allocated = ptr_allocated; |
1122 | rslot = &mixer->slots[ptr->oss_id]; |
1123 | mixer_slot_clear(rslot); |
1124 | rslot->stereo = slot.channels > 1 ? 1 : 0; |
1125 | rslot->get_volume = snd_mixer_oss_get_volume1; |
1126 | rslot->put_volume = snd_mixer_oss_put_volume1; |
1127 | /* note: ES18xx have both Capture Source and XX Capture Volume !!! */ |
1128 | if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { |
1129 | rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw; |
1130 | rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw; |
1131 | } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { |
1132 | rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route; |
1133 | rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route; |
1134 | } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) { |
1135 | mixer->mask_recsrc |= 1 << ptr->oss_id; |
1136 | } |
1137 | rslot->private_data = pslot; |
1138 | rslot->private_free = snd_mixer_oss_slot_free; |
1139 | return 1; |
1140 | } |
1141 | return 0; |
1142 | } |
1143 | |
1144 | #ifdef CONFIG_SND_PROC_FS |
1145 | /* |
1146 | */ |
1147 | #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name |
1148 | static const char * const oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = { |
1149 | MIXER_VOL(VOLUME), |
1150 | MIXER_VOL(BASS), |
1151 | MIXER_VOL(TREBLE), |
1152 | MIXER_VOL(SYNTH), |
1153 | MIXER_VOL(PCM), |
1154 | MIXER_VOL(SPEAKER), |
1155 | MIXER_VOL(LINE), |
1156 | MIXER_VOL(MIC), |
1157 | MIXER_VOL(CD), |
1158 | MIXER_VOL(IMIX), |
1159 | MIXER_VOL(ALTPCM), |
1160 | MIXER_VOL(RECLEV), |
1161 | MIXER_VOL(IGAIN), |
1162 | MIXER_VOL(OGAIN), |
1163 | MIXER_VOL(LINE1), |
1164 | MIXER_VOL(LINE2), |
1165 | MIXER_VOL(LINE3), |
1166 | MIXER_VOL(DIGITAL1), |
1167 | MIXER_VOL(DIGITAL2), |
1168 | MIXER_VOL(DIGITAL3), |
1169 | MIXER_VOL(PHONEIN), |
1170 | MIXER_VOL(PHONEOUT), |
1171 | MIXER_VOL(VIDEO), |
1172 | MIXER_VOL(RADIO), |
1173 | MIXER_VOL(MONITOR), |
1174 | }; |
1175 | |
1176 | /* |
1177 | * /proc interface |
1178 | */ |
1179 | |
1180 | static void snd_mixer_oss_proc_read(struct snd_info_entry *entry, |
1181 | struct snd_info_buffer *buffer) |
1182 | { |
1183 | struct snd_mixer_oss *mixer = entry->private_data; |
1184 | int i; |
1185 | |
1186 | mutex_lock(&mixer->reg_mutex); |
1187 | for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) { |
1188 | struct slot *p; |
1189 | |
1190 | if (! oss_mixer_names[i]) |
1191 | continue; |
1192 | p = (struct slot *)mixer->slots[i].private_data; |
1193 | snd_iprintf(buffer, "%s " , oss_mixer_names[i]); |
1194 | if (p && p->assigned) |
1195 | snd_iprintf(buffer, "\"%s\" %d\n" , |
1196 | p->assigned->name, |
1197 | p->assigned->index); |
1198 | else |
1199 | snd_iprintf(buffer, "\"\" 0\n" ); |
1200 | } |
1201 | mutex_unlock(lock: &mixer->reg_mutex); |
1202 | } |
1203 | |
1204 | static void snd_mixer_oss_proc_write(struct snd_info_entry *entry, |
1205 | struct snd_info_buffer *buffer) |
1206 | { |
1207 | struct snd_mixer_oss *mixer = entry->private_data; |
1208 | char line[128], str[32], idxstr[16]; |
1209 | const char *cptr; |
1210 | unsigned int idx; |
1211 | int ch; |
1212 | struct snd_mixer_oss_assign_table *tbl; |
1213 | struct slot *slot; |
1214 | |
1215 | while (!snd_info_get_line(buffer, line, len: sizeof(line))) { |
1216 | cptr = snd_info_get_str(dest: str, src: line, len: sizeof(str)); |
1217 | for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++) |
1218 | if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0) |
1219 | break; |
1220 | if (ch >= SNDRV_OSS_MAX_MIXERS) { |
1221 | pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n" , |
1222 | str); |
1223 | continue; |
1224 | } |
1225 | cptr = snd_info_get_str(dest: str, src: cptr, len: sizeof(str)); |
1226 | if (! *str) { |
1227 | /* remove the entry */ |
1228 | mutex_lock(&mixer->reg_mutex); |
1229 | mixer_slot_clear(rslot: &mixer->slots[ch]); |
1230 | mutex_unlock(lock: &mixer->reg_mutex); |
1231 | continue; |
1232 | } |
1233 | snd_info_get_str(dest: idxstr, src: cptr, len: sizeof(idxstr)); |
1234 | idx = simple_strtoul(idxstr, NULL, 10); |
1235 | if (idx >= 0x4000) { /* too big */ |
1236 | pr_err("ALSA: mixer_oss: invalid index %d\n" , idx); |
1237 | continue; |
1238 | } |
1239 | mutex_lock(&mixer->reg_mutex); |
1240 | slot = (struct slot *)mixer->slots[ch].private_data; |
1241 | if (slot && slot->assigned && |
1242 | slot->assigned->index == idx && ! strcmp(slot->assigned->name, str)) |
1243 | /* not changed */ |
1244 | goto __unlock; |
1245 | tbl = kmalloc(size: sizeof(*tbl), GFP_KERNEL); |
1246 | if (!tbl) |
1247 | goto __unlock; |
1248 | tbl->oss_id = ch; |
1249 | tbl->name = kstrdup(s: str, GFP_KERNEL); |
1250 | if (! tbl->name) { |
1251 | kfree(objp: tbl); |
1252 | goto __unlock; |
1253 | } |
1254 | tbl->index = idx; |
1255 | if (snd_mixer_oss_build_input(mixer, ptr: tbl, ptr_allocated: 1, replace_old: 1) <= 0) { |
1256 | kfree(objp: tbl->name); |
1257 | kfree(objp: tbl); |
1258 | } |
1259 | __unlock: |
1260 | mutex_unlock(lock: &mixer->reg_mutex); |
1261 | } |
1262 | } |
1263 | |
1264 | static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer) |
1265 | { |
1266 | struct snd_info_entry *entry; |
1267 | |
1268 | entry = snd_info_create_card_entry(card: mixer->card, name: "oss_mixer" , |
1269 | parent: mixer->card->proc_root); |
1270 | if (! entry) |
1271 | return; |
1272 | entry->content = SNDRV_INFO_CONTENT_TEXT; |
1273 | entry->mode = S_IFREG | 0644; |
1274 | entry->c.text.read = snd_mixer_oss_proc_read; |
1275 | entry->c.text.write = snd_mixer_oss_proc_write; |
1276 | entry->private_data = mixer; |
1277 | if (snd_info_register(entry) < 0) { |
1278 | snd_info_free_entry(entry); |
1279 | entry = NULL; |
1280 | } |
1281 | mixer->proc_entry = entry; |
1282 | } |
1283 | |
1284 | static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer) |
1285 | { |
1286 | snd_info_free_entry(entry: mixer->proc_entry); |
1287 | mixer->proc_entry = NULL; |
1288 | } |
1289 | #else /* !CONFIG_SND_PROC_FS */ |
1290 | #define snd_mixer_oss_proc_init(mix) |
1291 | #define snd_mixer_oss_proc_done(mix) |
1292 | #endif /* CONFIG_SND_PROC_FS */ |
1293 | |
1294 | static void snd_mixer_oss_build(struct snd_mixer_oss *mixer) |
1295 | { |
1296 | static const struct snd_mixer_oss_assign_table table[] = { |
1297 | { SOUND_MIXER_VOLUME, "Master" , 0 }, |
1298 | { SOUND_MIXER_VOLUME, "Front" , 0 }, /* fallback */ |
1299 | { SOUND_MIXER_BASS, "Tone Control - Bass" , 0 }, |
1300 | { SOUND_MIXER_TREBLE, "Tone Control - Treble" , 0 }, |
1301 | { SOUND_MIXER_SYNTH, "Synth" , 0 }, |
1302 | { SOUND_MIXER_SYNTH, "FM" , 0 }, /* fallback */ |
1303 | { SOUND_MIXER_SYNTH, "Music" , 0 }, /* fallback */ |
1304 | { SOUND_MIXER_PCM, "PCM" , 0 }, |
1305 | { SOUND_MIXER_SPEAKER, "Beep" , 0 }, |
1306 | { SOUND_MIXER_SPEAKER, "PC Speaker" , 0 }, /* fallback */ |
1307 | { SOUND_MIXER_SPEAKER, "Speaker" , 0 }, /* fallback */ |
1308 | { SOUND_MIXER_LINE, "Line" , 0 }, |
1309 | { SOUND_MIXER_MIC, "Mic" , 0 }, |
1310 | { SOUND_MIXER_CD, "CD" , 0 }, |
1311 | { SOUND_MIXER_IMIX, "Monitor Mix" , 0 }, |
1312 | { SOUND_MIXER_ALTPCM, "PCM" , 1 }, |
1313 | { SOUND_MIXER_ALTPCM, "Headphone" , 0 }, /* fallback */ |
1314 | { SOUND_MIXER_ALTPCM, "Wave" , 0 }, /* fallback */ |
1315 | { SOUND_MIXER_RECLEV, "-- nothing --" , 0 }, |
1316 | { SOUND_MIXER_IGAIN, "Capture" , 0 }, |
1317 | { SOUND_MIXER_OGAIN, "Playback" , 0 }, |
1318 | { SOUND_MIXER_LINE1, "Aux" , 0 }, |
1319 | { SOUND_MIXER_LINE2, "Aux" , 1 }, |
1320 | { SOUND_MIXER_LINE3, "Aux" , 2 }, |
1321 | { SOUND_MIXER_DIGITAL1, "Digital" , 0 }, |
1322 | { SOUND_MIXER_DIGITAL1, "IEC958" , 0 }, /* fallback */ |
1323 | { SOUND_MIXER_DIGITAL1, "IEC958 Optical" , 0 }, /* fallback */ |
1324 | { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial" , 0 }, /* fallback */ |
1325 | { SOUND_MIXER_DIGITAL2, "Digital" , 1 }, |
1326 | { SOUND_MIXER_DIGITAL3, "Digital" , 2 }, |
1327 | { SOUND_MIXER_PHONEIN, "Phone" , 0 }, |
1328 | { SOUND_MIXER_PHONEOUT, "Master Mono" , 0 }, |
1329 | { SOUND_MIXER_PHONEOUT, "Speaker" , 0 }, /*fallback*/ |
1330 | { SOUND_MIXER_PHONEOUT, "Mono" , 0 }, /*fallback*/ |
1331 | { SOUND_MIXER_PHONEOUT, "Phone" , 0 }, /* fallback */ |
1332 | { SOUND_MIXER_VIDEO, "Video" , 0 }, |
1333 | { SOUND_MIXER_RADIO, "Radio" , 0 }, |
1334 | { SOUND_MIXER_MONITOR, "Monitor" , 0 } |
1335 | }; |
1336 | unsigned int idx; |
1337 | |
1338 | for (idx = 0; idx < ARRAY_SIZE(table); idx++) |
1339 | snd_mixer_oss_build_input(mixer, ptr: &table[idx], ptr_allocated: 0, replace_old: 0); |
1340 | if (mixer->mask_recsrc) { |
1341 | mixer->get_recsrc = snd_mixer_oss_get_recsrc2; |
1342 | mixer->put_recsrc = snd_mixer_oss_put_recsrc2; |
1343 | } |
1344 | } |
1345 | |
1346 | /* |
1347 | * |
1348 | */ |
1349 | |
1350 | static int snd_mixer_oss_free1(void *private) |
1351 | { |
1352 | struct snd_mixer_oss *mixer = private; |
1353 | struct snd_card *card; |
1354 | int idx; |
1355 | |
1356 | if (!mixer) |
1357 | return 0; |
1358 | card = mixer->card; |
1359 | if (snd_BUG_ON(mixer != card->mixer_oss)) |
1360 | return -ENXIO; |
1361 | card->mixer_oss = NULL; |
1362 | for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) { |
1363 | struct snd_mixer_oss_slot *chn = &mixer->slots[idx]; |
1364 | if (chn->private_free) |
1365 | chn->private_free(chn); |
1366 | } |
1367 | kfree(objp: mixer); |
1368 | return 0; |
1369 | } |
1370 | |
1371 | static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd) |
1372 | { |
1373 | struct snd_mixer_oss *mixer; |
1374 | |
1375 | if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) { |
1376 | int idx, err; |
1377 | |
1378 | mixer = kcalloc(n: 2, size: sizeof(*mixer), GFP_KERNEL); |
1379 | if (mixer == NULL) |
1380 | return -ENOMEM; |
1381 | mutex_init(&mixer->reg_mutex); |
1382 | err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, |
1383 | card, dev: 0, |
1384 | f_ops: &snd_mixer_oss_f_ops, private_data: card); |
1385 | if (err < 0) { |
1386 | dev_err(card->dev, |
1387 | "unable to register OSS mixer device %i:%i\n" , |
1388 | card->number, 0); |
1389 | kfree(objp: mixer); |
1390 | return err; |
1391 | } |
1392 | mixer->oss_dev_alloc = 1; |
1393 | mixer->card = card; |
1394 | if (*card->mixername) |
1395 | strscpy(p: mixer->name, q: card->mixername, size: sizeof(mixer->name)); |
1396 | else |
1397 | snprintf(buf: mixer->name, size: sizeof(mixer->name), |
1398 | fmt: "mixer%i" , card->number); |
1399 | #ifdef SNDRV_OSS_INFO_DEV_MIXERS |
1400 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS, |
1401 | num: card->number, |
1402 | string: mixer->name); |
1403 | #endif |
1404 | for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) |
1405 | mixer->slots[idx].number = idx; |
1406 | card->mixer_oss = mixer; |
1407 | snd_mixer_oss_build(mixer); |
1408 | snd_mixer_oss_proc_init(mixer); |
1409 | } else { |
1410 | mixer = card->mixer_oss; |
1411 | if (mixer == NULL) |
1412 | return 0; |
1413 | if (mixer->oss_dev_alloc) { |
1414 | #ifdef SNDRV_OSS_INFO_DEV_MIXERS |
1415 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number); |
1416 | #endif |
1417 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, card: mixer->card, dev: 0); |
1418 | mixer->oss_dev_alloc = 0; |
1419 | } |
1420 | if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) |
1421 | return 0; |
1422 | snd_mixer_oss_proc_done(mixer); |
1423 | return snd_mixer_oss_free1(private: mixer); |
1424 | } |
1425 | return 0; |
1426 | } |
1427 | |
1428 | static int __init alsa_mixer_oss_init(void) |
1429 | { |
1430 | struct snd_card *card; |
1431 | int idx; |
1432 | |
1433 | snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler; |
1434 | for (idx = 0; idx < SNDRV_CARDS; idx++) { |
1435 | card = snd_card_ref(card: idx); |
1436 | if (card) { |
1437 | snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_REGISTER); |
1438 | snd_card_unref(card); |
1439 | } |
1440 | } |
1441 | return 0; |
1442 | } |
1443 | |
1444 | static void __exit alsa_mixer_oss_exit(void) |
1445 | { |
1446 | struct snd_card *card; |
1447 | int idx; |
1448 | |
1449 | snd_mixer_oss_notify_callback = NULL; |
1450 | for (idx = 0; idx < SNDRV_CARDS; idx++) { |
1451 | card = snd_card_ref(card: idx); |
1452 | if (card) { |
1453 | snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_FREE); |
1454 | snd_card_unref(card); |
1455 | } |
1456 | } |
1457 | } |
1458 | |
1459 | module_init(alsa_mixer_oss_init) |
1460 | module_exit(alsa_mixer_oss_exit) |
1461 | |