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, 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 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(fmixer->card->module); 76 snd_card_file_remove(fmixer->card, file); 77 kfree(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(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 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(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 } 112 113 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 for (chn = 0; chn < 31; chn++) { 134 pslot = &mixer->slots[chn]; 135 if (pslot->put_volume || pslot->put_recsrc) 136 result |= 1 << chn; 137 } 138 return result; 139 } 140 141 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer) 142 { 143 struct snd_mixer_oss *mixer = fmixer->mixer; 144 struct snd_mixer_oss_slot *pslot; 145 int result = 0, chn; 146 147 if (mixer == NULL) 148 return -EIO; 149 for (chn = 0; chn < 31; chn++) { 150 pslot = &mixer->slots[chn]; 151 if (pslot->put_volume && pslot->stereo) 152 result |= 1 << chn; 153 } 154 return result; 155 } 156 157 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer) 158 { 159 struct snd_mixer_oss *mixer = fmixer->mixer; 160 int result = 0; 161 162 if (mixer == NULL) 163 return -EIO; 164 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ 165 result = mixer->mask_recsrc; 166 } else { 167 struct snd_mixer_oss_slot *pslot; 168 int chn; 169 for (chn = 0; chn < 31; chn++) { 170 pslot = &mixer->slots[chn]; 171 if (pslot->put_recsrc) 172 result |= 1 << chn; 173 } 174 } 175 return result; 176 } 177 178 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer) 179 { 180 struct snd_mixer_oss *mixer = fmixer->mixer; 181 int result = 0; 182 183 if (mixer == NULL) 184 return -EIO; 185 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ 186 int err; 187 unsigned int index; 188 err = mixer->get_recsrc(fmixer, &index); 189 if (err < 0) 190 return err; 191 result = 1 << index; 192 } else { 193 struct snd_mixer_oss_slot *pslot; 194 int chn; 195 for (chn = 0; chn < 31; chn++) { 196 pslot = &mixer->slots[chn]; 197 if (pslot->get_recsrc) { 198 int active = 0; 199 pslot->get_recsrc(fmixer, pslot, &active); 200 if (active) 201 result |= 1 << chn; 202 } 203 } 204 } 205 return mixer->oss_recsrc = result; 206 } 207 208 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc) 209 { 210 struct snd_mixer_oss *mixer = fmixer->mixer; 211 struct snd_mixer_oss_slot *pslot; 212 int chn, active; 213 unsigned int index; 214 int result = 0; 215 216 if (mixer == NULL) 217 return -EIO; 218 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */ 219 if (recsrc & ~mixer->oss_recsrc) 220 recsrc &= ~mixer->oss_recsrc; 221 mixer->put_recsrc(fmixer, ffz(~recsrc)); 222 mixer->get_recsrc(fmixer, &index); 223 result = 1 << index; 224 } 225 for (chn = 0; chn < 31; chn++) { 226 pslot = &mixer->slots[chn]; 227 if (pslot->put_recsrc) { 228 active = (recsrc & (1 << chn)) ? 1 : 0; 229 pslot->put_recsrc(fmixer, pslot, active); 230 } 231 } 232 if (! result) { 233 for (chn = 0; chn < 31; chn++) { 234 pslot = &mixer->slots[chn]; 235 if (pslot->get_recsrc) { 236 active = 0; 237 pslot->get_recsrc(fmixer, pslot, &active); 238 if (active) 239 result |= 1 << chn; 240 } 241 } 242 } 243 return result; 244 } 245 246 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot) 247 { 248 struct snd_mixer_oss *mixer = fmixer->mixer; 249 struct snd_mixer_oss_slot *pslot; 250 int result = 0, left, right; 251 252 if (mixer == NULL || slot > 30) 253 return -EIO; 254 pslot = &mixer->slots[slot]; 255 left = pslot->volume[0]; 256 right = pslot->volume[1]; 257 if (pslot->get_volume) 258 result = pslot->get_volume(fmixer, pslot, &left, &right); 259 if (!pslot->stereo) 260 right = left; 261 if (snd_BUG_ON(left < 0 || left > 100)) 262 return -EIO; 263 if (snd_BUG_ON(right < 0 || right > 100)) 264 return -EIO; 265 if (result >= 0) { 266 pslot->volume[0] = left; 267 pslot->volume[1] = right; 268 result = (left & 0xff) | ((right & 0xff) << 8); 269 } 270 return result; 271 } 272 273 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer, 274 int slot, int volume) 275 { 276 struct snd_mixer_oss *mixer = fmixer->mixer; 277 struct snd_mixer_oss_slot *pslot; 278 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff; 279 280 if (mixer == NULL || slot > 30) 281 return -EIO; 282 pslot = &mixer->slots[slot]; 283 if (left > 100) 284 left = 100; 285 if (right > 100) 286 right = 100; 287 if (!pslot->stereo) 288 right = left; 289 if (pslot->put_volume) 290 result = pslot->put_volume(fmixer, pslot, left, right); 291 if (result < 0) 292 return result; 293 pslot->volume[0] = left; 294 pslot->volume[1] = right; 295 return (left & 0xff) | ((right & 0xff) << 8); 296 } 297 298 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg) 299 { 300 void __user *argp = (void __user *)arg; 301 int __user *p = argp; 302 int tmp; 303 304 if (snd_BUG_ON(!fmixer)) 305 return -ENXIO; 306 if (((cmd >> 8) & 0xff) == 'M') { 307 switch (cmd) { 308 case SOUND_MIXER_INFO: 309 return snd_mixer_oss_info(fmixer, argp); 310 case SOUND_OLD_MIXER_INFO: 311 return snd_mixer_oss_info_obsolete(fmixer, argp); 312 case SOUND_MIXER_WRITE_RECSRC: 313 if (get_user(tmp, p)) 314 return -EFAULT; 315 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp); 316 if (tmp < 0) 317 return tmp; 318 return put_user(tmp, p); 319 case OSS_GETVERSION: 320 return put_user(SNDRV_OSS_VERSION, p); 321 case OSS_ALSAEMULVER: 322 return put_user(1, p); 323 case SOUND_MIXER_READ_DEVMASK: 324 tmp = snd_mixer_oss_devmask(fmixer); 325 if (tmp < 0) 326 return tmp; 327 return put_user(tmp, p); 328 case SOUND_MIXER_READ_STEREODEVS: 329 tmp = snd_mixer_oss_stereodevs(fmixer); 330 if (tmp < 0) 331 return tmp; 332 return put_user(tmp, p); 333 case SOUND_MIXER_READ_RECMASK: 334 tmp = snd_mixer_oss_recmask(fmixer); 335 if (tmp < 0) 336 return tmp; 337 return put_user(tmp, p); 338 case SOUND_MIXER_READ_CAPS: 339 tmp = snd_mixer_oss_caps(fmixer); 340 if (tmp < 0) 341 return tmp; 342 return put_user(tmp, p); 343 case SOUND_MIXER_READ_RECSRC: 344 tmp = snd_mixer_oss_get_recsrc(fmixer); 345 if (tmp < 0) 346 return tmp; 347 return put_user(tmp, p); 348 } 349 } 350 if (cmd & SIOC_IN) { 351 if (get_user(tmp, p)) 352 return -EFAULT; 353 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp); 354 if (tmp < 0) 355 return tmp; 356 return put_user(tmp, p); 357 } else if (cmd & SIOC_OUT) { 358 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff); 359 if (tmp < 0) 360 return tmp; 361 return put_user(tmp, p); 362 } 363 return -ENXIO; 364 } 365 366 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 367 { 368 return snd_mixer_oss_ioctl1(file->private_data, cmd, arg); 369 } 370 371 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg) 372 { 373 struct snd_mixer_oss_file fmixer; 374 375 if (snd_BUG_ON(!card)) 376 return -ENXIO; 377 if (card->mixer_oss == NULL) 378 return -ENXIO; 379 memset(&fmixer, 0, sizeof(fmixer)); 380 fmixer.card = card; 381 fmixer.mixer = card->mixer_oss; 382 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg); 383 } 384 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); 385 386 #ifdef CONFIG_COMPAT 387 /* all compatible */ 388 static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd, 389 unsigned long arg) 390 { 391 return snd_mixer_oss_ioctl1(file->private_data, cmd, 392 (unsigned long)compat_ptr(arg)); 393 } 394 #else 395 #define snd_mixer_oss_ioctl_compat NULL 396 #endif 397 398 /* 399 * REGISTRATION PART 400 */ 401 402 static const struct file_operations snd_mixer_oss_f_ops = 403 { 404 .owner = THIS_MODULE, 405 .open = snd_mixer_oss_open, 406 .release = snd_mixer_oss_release, 407 .llseek = no_llseek, 408 .unlocked_ioctl = snd_mixer_oss_ioctl, 409 .compat_ioctl = snd_mixer_oss_ioctl_compat, 410 }; 411 412 /* 413 * utilities 414 */ 415 416 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax) 417 { 418 long orange = omax - omin, nrange = nmax - nmin; 419 420 if (orange == 0) 421 return 0; 422 return DIV_ROUND_CLOSEST(nrange * (val - omin), orange) + nmin; 423 } 424 425 /* convert from alsa native to oss values (0-100) */ 426 static long snd_mixer_oss_conv1(long val, long min, long max, int *old) 427 { 428 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max)) 429 return *old; 430 return snd_mixer_oss_conv(val, min, max, 0, 100); 431 } 432 433 /* convert from oss to alsa native values */ 434 static long snd_mixer_oss_conv2(long val, long min, long max) 435 { 436 return snd_mixer_oss_conv(val, 0, 100, min, max); 437 } 438 439 #if 0 440 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot) 441 { 442 struct snd_mixer_oss *mixer = card->mixer_oss; 443 if (mixer) 444 mixer->mask_recsrc |= 1 << slot; 445 } 446 447 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot) 448 { 449 struct snd_mixer_oss *mixer = card->mixer_oss; 450 if (mixer && (mixer->mask_recsrc & (1 << slot))) 451 return 1; 452 return 0; 453 } 454 #endif 455 456 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250 457 458 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0 459 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1 460 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2 461 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3 462 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4 463 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5 464 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6 465 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7 466 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8 467 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9 468 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10 469 470 #define SNDRV_MIXER_OSS_ITEM_COUNT 11 471 472 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0) 473 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1) 474 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2) 475 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3) 476 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4) 477 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5) 478 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6) 479 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7) 480 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8) 481 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9) 482 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10) 483 484 struct slot { 485 unsigned int signature; 486 unsigned int present; 487 unsigned int channels; 488 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT]; 489 unsigned int capture_item; 490 const struct snd_mixer_oss_assign_table *assigned; 491 unsigned int allocated: 1; 492 }; 493 494 #define ID_UNKNOWN ((unsigned int)-1) 495 496 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index) 497 { 498 struct snd_card *card = mixer->card; 499 struct snd_ctl_elem_id id; 500 501 memset(&id, 0, sizeof(id)); 502 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; 503 strscpy(id.name, name, sizeof(id.name)); 504 id.index = index; 505 return snd_ctl_find_id(card, &id); 506 } 507 508 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer, 509 struct snd_mixer_oss_slot *pslot, 510 unsigned int numid, 511 int *left, int *right) 512 { 513 struct snd_ctl_elem_info *uinfo; 514 struct snd_ctl_elem_value *uctl; 515 struct snd_kcontrol *kctl; 516 struct snd_card *card = fmixer->card; 517 518 if (numid == ID_UNKNOWN) 519 return; 520 down_read(&card->controls_rwsem); 521 kctl = snd_ctl_find_numid(card, numid); 522 if (!kctl) { 523 up_read(&card->controls_rwsem); 524 return; 525 } 526 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 527 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 528 if (uinfo == NULL || uctl == NULL) 529 goto __unalloc; 530 if (kctl->info(kctl, uinfo)) 531 goto __unalloc; 532 if (kctl->get(kctl, uctl)) 533 goto __unalloc; 534 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && 535 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) 536 goto __unalloc; 537 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]); 538 if (uinfo->count > 1) 539 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]); 540 __unalloc: 541 up_read(&card->controls_rwsem); 542 kfree(uctl); 543 kfree(uinfo); 544 } 545 546 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer, 547 struct snd_mixer_oss_slot *pslot, 548 unsigned int numid, 549 int *left, int *right, 550 int route) 551 { 552 struct snd_ctl_elem_info *uinfo; 553 struct snd_ctl_elem_value *uctl; 554 struct snd_kcontrol *kctl; 555 struct snd_card *card = fmixer->card; 556 557 if (numid == ID_UNKNOWN) 558 return; 559 down_read(&card->controls_rwsem); 560 kctl = snd_ctl_find_numid(card, numid); 561 if (!kctl) { 562 up_read(&card->controls_rwsem); 563 return; 564 } 565 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 566 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 567 if (uinfo == NULL || uctl == NULL) 568 goto __unalloc; 569 if (kctl->info(kctl, uinfo)) 570 goto __unalloc; 571 if (kctl->get(kctl, uctl)) 572 goto __unalloc; 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 __unalloc: 581 up_read(&card->controls_rwsem); 582 kfree(uctl); 583 kfree(uinfo); 584 } 585 586 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer, 587 struct snd_mixer_oss_slot *pslot, 588 int *left, int *right) 589 { 590 struct slot *slot = pslot->private_data; 591 592 *left = *right = 100; 593 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { 594 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); 595 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { 596 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); 597 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { 598 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); 599 } 600 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { 601 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 602 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { 603 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 604 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { 605 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 606 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { 607 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 608 } 609 return 0; 610 } 611 612 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer, 613 struct snd_mixer_oss_slot *pslot, 614 unsigned int numid, 615 int left, int right) 616 { 617 struct snd_ctl_elem_info *uinfo; 618 struct snd_ctl_elem_value *uctl; 619 struct snd_kcontrol *kctl; 620 struct snd_card *card = fmixer->card; 621 int res; 622 623 if (numid == ID_UNKNOWN) 624 return; 625 down_read(&card->controls_rwsem); 626 kctl = snd_ctl_find_numid(card, numid); 627 if (!kctl) { 628 up_read(&card->controls_rwsem); 629 return; 630 } 631 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 632 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 633 if (uinfo == NULL || uctl == NULL) 634 goto __unalloc; 635 if (kctl->info(kctl, uinfo)) 636 goto __unalloc; 637 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && 638 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) 639 goto __unalloc; 640 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max); 641 if (uinfo->count > 1) 642 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max); 643 res = kctl->put(kctl, uctl); 644 if (res < 0) 645 goto __unalloc; 646 if (res > 0) 647 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 648 __unalloc: 649 up_read(&card->controls_rwsem); 650 kfree(uctl); 651 kfree(uinfo); 652 } 653 654 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer, 655 struct snd_mixer_oss_slot *pslot, 656 unsigned int numid, 657 int left, int right, 658 int route) 659 { 660 struct snd_ctl_elem_info *uinfo; 661 struct snd_ctl_elem_value *uctl; 662 struct snd_kcontrol *kctl; 663 struct snd_card *card = fmixer->card; 664 int res; 665 666 if (numid == ID_UNKNOWN) 667 return; 668 down_read(&card->controls_rwsem); 669 kctl = snd_ctl_find_numid(card, numid); 670 if (!kctl) { 671 up_read(&card->controls_rwsem); 672 return; 673 } 674 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 675 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 676 if (uinfo == NULL || uctl == NULL) 677 goto __unalloc; 678 if (kctl->info(kctl, uinfo)) 679 goto __unalloc; 680 if (uinfo->count > 1) { 681 uctl->value.integer.value[0] = left > 0 ? 1 : 0; 682 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0; 683 if (route) { 684 uctl->value.integer.value[1] = 685 uctl->value.integer.value[2] = 0; 686 } 687 } else { 688 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0; 689 } 690 res = kctl->put(kctl, uctl); 691 if (res < 0) 692 goto __unalloc; 693 if (res > 0) 694 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 695 __unalloc: 696 up_read(&card->controls_rwsem); 697 kfree(uctl); 698 kfree(uinfo); 699 } 700 701 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer, 702 struct snd_mixer_oss_slot *pslot, 703 int left, int right) 704 { 705 struct slot *slot = pslot->private_data; 706 707 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { 708 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); 709 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) 710 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); 711 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) { 712 snd_mixer_oss_put_volume1_vol(fmixer, pslot, 713 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); 714 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { 715 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); 716 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { 717 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); 718 } 719 if (left || right) { 720 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) 721 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 722 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) 723 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0); 724 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) 725 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 726 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) 727 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 728 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) 729 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1); 730 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) 731 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 732 } else { 733 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { 734 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 735 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { 736 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0); 737 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { 738 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 739 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { 740 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 741 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { 742 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1); 743 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { 744 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 745 } 746 } 747 return 0; 748 } 749 750 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer, 751 struct snd_mixer_oss_slot *pslot, 752 int *active) 753 { 754 struct slot *slot = pslot->private_data; 755 int left, right; 756 757 left = right = 1; 758 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0); 759 *active = (left || right) ? 1 : 0; 760 return 0; 761 } 762 763 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer, 764 struct snd_mixer_oss_slot *pslot, 765 int *active) 766 { 767 struct slot *slot = pslot->private_data; 768 int left, right; 769 770 left = right = 1; 771 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1); 772 *active = (left || right) ? 1 : 0; 773 return 0; 774 } 775 776 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer, 777 struct snd_mixer_oss_slot *pslot, 778 int active) 779 { 780 struct slot *slot = pslot->private_data; 781 782 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0); 783 return 0; 784 } 785 786 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer, 787 struct snd_mixer_oss_slot *pslot, 788 int active) 789 { 790 struct slot *slot = pslot->private_data; 791 792 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1); 793 return 0; 794 } 795 796 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index) 797 { 798 struct snd_card *card = fmixer->card; 799 struct snd_mixer_oss *mixer = fmixer->mixer; 800 struct snd_kcontrol *kctl; 801 struct snd_mixer_oss_slot *pslot; 802 struct slot *slot; 803 struct snd_ctl_elem_info *uinfo; 804 struct snd_ctl_elem_value *uctl; 805 int err, idx; 806 807 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 808 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 809 if (uinfo == NULL || uctl == NULL) { 810 err = -ENOMEM; 811 goto __free_only; 812 } 813 down_read(&card->controls_rwsem); 814 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); 815 if (! kctl) { 816 err = -ENOENT; 817 goto __unlock; 818 } 819 err = kctl->info(kctl, uinfo); 820 if (err < 0) 821 goto __unlock; 822 err = kctl->get(kctl, uctl); 823 if (err < 0) 824 goto __unlock; 825 for (idx = 0; idx < 32; idx++) { 826 if (!(mixer->mask_recsrc & (1 << idx))) 827 continue; 828 pslot = &mixer->slots[idx]; 829 slot = pslot->private_data; 830 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) 831 continue; 832 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) 833 continue; 834 if (slot->capture_item == uctl->value.enumerated.item[0]) { 835 *active_index = idx; 836 break; 837 } 838 } 839 err = 0; 840 __unlock: 841 up_read(&card->controls_rwsem); 842 __free_only: 843 kfree(uctl); 844 kfree(uinfo); 845 return err; 846 } 847 848 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index) 849 { 850 struct snd_card *card = fmixer->card; 851 struct snd_mixer_oss *mixer = fmixer->mixer; 852 struct snd_kcontrol *kctl; 853 struct snd_mixer_oss_slot *pslot; 854 struct slot *slot = NULL; 855 struct snd_ctl_elem_info *uinfo; 856 struct snd_ctl_elem_value *uctl; 857 int err; 858 unsigned int idx; 859 860 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 861 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 862 if (uinfo == NULL || uctl == NULL) { 863 err = -ENOMEM; 864 goto __free_only; 865 } 866 down_read(&card->controls_rwsem); 867 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); 868 if (! kctl) { 869 err = -ENOENT; 870 goto __unlock; 871 } 872 err = kctl->info(kctl, uinfo); 873 if (err < 0) 874 goto __unlock; 875 for (idx = 0; idx < 32; idx++) { 876 if (!(mixer->mask_recsrc & (1 << idx))) 877 continue; 878 pslot = &mixer->slots[idx]; 879 slot = pslot->private_data; 880 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) 881 continue; 882 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) 883 continue; 884 if (idx == active_index) 885 break; 886 slot = NULL; 887 } 888 if (! slot) 889 goto __unlock; 890 for (idx = 0; idx < uinfo->count; idx++) 891 uctl->value.enumerated.item[idx] = slot->capture_item; 892 err = kctl->put(kctl, uctl); 893 if (err > 0) 894 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 895 err = 0; 896 __unlock: 897 up_read(&card->controls_rwsem); 898 __free_only: 899 kfree(uctl); 900 kfree(uinfo); 901 return err; 902 } 903 904 struct snd_mixer_oss_assign_table { 905 int oss_id; 906 const char *name; 907 int index; 908 }; 909 910 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item) 911 { 912 struct snd_ctl_elem_info *info; 913 struct snd_kcontrol *kcontrol; 914 struct snd_card *card = mixer->card; 915 int err; 916 917 down_read(&card->controls_rwsem); 918 kcontrol = snd_mixer_oss_test_id(mixer, name, index); 919 if (kcontrol == NULL) { 920 up_read(&card->controls_rwsem); 921 return 0; 922 } 923 info = kmalloc(sizeof(*info), GFP_KERNEL); 924 if (! info) { 925 up_read(&card->controls_rwsem); 926 return -ENOMEM; 927 } 928 err = kcontrol->info(kcontrol, info); 929 if (err < 0) { 930 up_read(&card->controls_rwsem); 931 kfree(info); 932 return err; 933 } 934 slot->numid[item] = kcontrol->id.numid; 935 up_read(&card->controls_rwsem); 936 if (info->count > slot->channels) 937 slot->channels = info->count; 938 slot->present |= 1 << item; 939 kfree(info); 940 return 0; 941 } 942 943 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn) 944 { 945 struct slot *p = chn->private_data; 946 if (p) { 947 if (p->allocated && p->assigned) { 948 kfree_const(p->assigned->name); 949 kfree_const(p->assigned); 950 } 951 kfree(p); 952 } 953 } 954 955 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot) 956 { 957 int idx = rslot->number; /* remember this */ 958 if (rslot->private_free) 959 rslot->private_free(rslot); 960 memset(rslot, 0, sizeof(*rslot)); 961 rslot->number = idx; 962 } 963 964 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in 965 snd_mixer_oss_build_input! */ 966 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer, 967 const struct snd_mixer_oss_assign_table *ptr, 968 struct slot *slot) 969 { 970 char str[64]; 971 int err; 972 973 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index, 974 SNDRV_MIXER_OSS_ITEM_GLOBAL); 975 if (err) 976 return err; 977 sprintf(str, "%s Switch", ptr->name); 978 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 979 SNDRV_MIXER_OSS_ITEM_GSWITCH); 980 if (err) 981 return err; 982 sprintf(str, "%s Route", ptr->name); 983 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 984 SNDRV_MIXER_OSS_ITEM_GROUTE); 985 if (err) 986 return err; 987 sprintf(str, "%s Volume", ptr->name); 988 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 989 SNDRV_MIXER_OSS_ITEM_GVOLUME); 990 if (err) 991 return err; 992 sprintf(str, "%s Playback Switch", ptr->name); 993 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 994 SNDRV_MIXER_OSS_ITEM_PSWITCH); 995 if (err) 996 return err; 997 sprintf(str, "%s Playback Route", ptr->name); 998 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 999 SNDRV_MIXER_OSS_ITEM_PROUTE); 1000 if (err) 1001 return err; 1002 sprintf(str, "%s Playback Volume", ptr->name); 1003 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1004 SNDRV_MIXER_OSS_ITEM_PVOLUME); 1005 if (err) 1006 return err; 1007 sprintf(str, "%s Capture Switch", ptr->name); 1008 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1009 SNDRV_MIXER_OSS_ITEM_CSWITCH); 1010 if (err) 1011 return err; 1012 sprintf(str, "%s Capture Route", ptr->name); 1013 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1014 SNDRV_MIXER_OSS_ITEM_CROUTE); 1015 if (err) 1016 return err; 1017 sprintf(str, "%s Capture Volume", ptr->name); 1018 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1019 SNDRV_MIXER_OSS_ITEM_CVOLUME); 1020 if (err) 1021 return err; 1022 1023 return 0; 1024 } 1025 1026 /* 1027 * build an OSS mixer element. 1028 * ptr_allocated means the entry is dynamically allocated (change via proc file). 1029 * when replace_old = 1, the old entry is replaced with the new one. 1030 */ 1031 static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, 1032 const struct snd_mixer_oss_assign_table *ptr, 1033 int ptr_allocated, int replace_old) 1034 { 1035 struct slot slot; 1036 struct slot *pslot; 1037 struct snd_kcontrol *kctl; 1038 struct snd_mixer_oss_slot *rslot; 1039 char str[64]; 1040 1041 /* check if already assigned */ 1042 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old) 1043 return 0; 1044 1045 memset(&slot, 0, sizeof(slot)); 1046 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */ 1047 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot)) 1048 return 0; 1049 down_read(&mixer->card->controls_rwsem); 1050 kctl = NULL; 1051 if (!ptr->index) 1052 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); 1053 if (kctl) { 1054 struct snd_ctl_elem_info *uinfo; 1055 1056 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 1057 if (! uinfo) { 1058 up_read(&mixer->card->controls_rwsem); 1059 return -ENOMEM; 1060 } 1061 1062 if (kctl->info(kctl, uinfo)) { 1063 up_read(&mixer->card->controls_rwsem); 1064 kfree(uinfo); 1065 return 0; 1066 } 1067 strcpy(str, ptr->name); 1068 if (!strcmp(str, "Master")) 1069 strcpy(str, "Mix"); 1070 if (!strcmp(str, "Master Mono")) 1071 strcpy(str, "Mix Mono"); 1072 slot.capture_item = 0; 1073 if (!strcmp(uinfo->value.enumerated.name, str)) { 1074 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; 1075 } else { 1076 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) { 1077 uinfo->value.enumerated.item = slot.capture_item; 1078 if (kctl->info(kctl, uinfo)) { 1079 up_read(&mixer->card->controls_rwsem); 1080 kfree(uinfo); 1081 return 0; 1082 } 1083 if (!strcmp(uinfo->value.enumerated.name, str)) { 1084 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; 1085 break; 1086 } 1087 } 1088 } 1089 kfree(uinfo); 1090 } 1091 up_read(&mixer->card->controls_rwsem); 1092 if (slot.present != 0) { 1093 pslot = kmalloc(sizeof(slot), GFP_KERNEL); 1094 if (! pslot) 1095 return -ENOMEM; 1096 *pslot = slot; 1097 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE; 1098 pslot->assigned = ptr; 1099 pslot->allocated = ptr_allocated; 1100 rslot = &mixer->slots[ptr->oss_id]; 1101 mixer_slot_clear(rslot); 1102 rslot->stereo = slot.channels > 1 ? 1 : 0; 1103 rslot->get_volume = snd_mixer_oss_get_volume1; 1104 rslot->put_volume = snd_mixer_oss_put_volume1; 1105 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */ 1106 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { 1107 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw; 1108 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw; 1109 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { 1110 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route; 1111 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route; 1112 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) { 1113 mixer->mask_recsrc |= 1 << ptr->oss_id; 1114 } 1115 rslot->private_data = pslot; 1116 rslot->private_free = snd_mixer_oss_slot_free; 1117 return 1; 1118 } 1119 return 0; 1120 } 1121 1122 #ifdef CONFIG_SND_PROC_FS 1123 /* 1124 */ 1125 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name 1126 static const char * const oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = { 1127 MIXER_VOL(VOLUME), 1128 MIXER_VOL(BASS), 1129 MIXER_VOL(TREBLE), 1130 MIXER_VOL(SYNTH), 1131 MIXER_VOL(PCM), 1132 MIXER_VOL(SPEAKER), 1133 MIXER_VOL(LINE), 1134 MIXER_VOL(MIC), 1135 MIXER_VOL(CD), 1136 MIXER_VOL(IMIX), 1137 MIXER_VOL(ALTPCM), 1138 MIXER_VOL(RECLEV), 1139 MIXER_VOL(IGAIN), 1140 MIXER_VOL(OGAIN), 1141 MIXER_VOL(LINE1), 1142 MIXER_VOL(LINE2), 1143 MIXER_VOL(LINE3), 1144 MIXER_VOL(DIGITAL1), 1145 MIXER_VOL(DIGITAL2), 1146 MIXER_VOL(DIGITAL3), 1147 MIXER_VOL(PHONEIN), 1148 MIXER_VOL(PHONEOUT), 1149 MIXER_VOL(VIDEO), 1150 MIXER_VOL(RADIO), 1151 MIXER_VOL(MONITOR), 1152 }; 1153 1154 /* 1155 * /proc interface 1156 */ 1157 1158 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry, 1159 struct snd_info_buffer *buffer) 1160 { 1161 struct snd_mixer_oss *mixer = entry->private_data; 1162 int i; 1163 1164 mutex_lock(&mixer->reg_mutex); 1165 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) { 1166 struct slot *p; 1167 1168 if (! oss_mixer_names[i]) 1169 continue; 1170 p = (struct slot *)mixer->slots[i].private_data; 1171 snd_iprintf(buffer, "%s ", oss_mixer_names[i]); 1172 if (p && p->assigned) 1173 snd_iprintf(buffer, "\"%s\" %d\n", 1174 p->assigned->name, 1175 p->assigned->index); 1176 else 1177 snd_iprintf(buffer, "\"\" 0\n"); 1178 } 1179 mutex_unlock(&mixer->reg_mutex); 1180 } 1181 1182 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry, 1183 struct snd_info_buffer *buffer) 1184 { 1185 struct snd_mixer_oss *mixer = entry->private_data; 1186 char line[128], str[32], idxstr[16]; 1187 const char *cptr; 1188 unsigned int idx; 1189 int ch; 1190 struct snd_mixer_oss_assign_table *tbl; 1191 struct slot *slot; 1192 1193 while (!snd_info_get_line(buffer, line, sizeof(line))) { 1194 cptr = snd_info_get_str(str, line, sizeof(str)); 1195 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++) 1196 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0) 1197 break; 1198 if (ch >= SNDRV_OSS_MAX_MIXERS) { 1199 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n", 1200 str); 1201 continue; 1202 } 1203 cptr = snd_info_get_str(str, cptr, sizeof(str)); 1204 if (! *str) { 1205 /* remove the entry */ 1206 mutex_lock(&mixer->reg_mutex); 1207 mixer_slot_clear(&mixer->slots[ch]); 1208 mutex_unlock(&mixer->reg_mutex); 1209 continue; 1210 } 1211 snd_info_get_str(idxstr, cptr, sizeof(idxstr)); 1212 idx = simple_strtoul(idxstr, NULL, 10); 1213 if (idx >= 0x4000) { /* too big */ 1214 pr_err("ALSA: mixer_oss: invalid index %d\n", idx); 1215 continue; 1216 } 1217 mutex_lock(&mixer->reg_mutex); 1218 slot = (struct slot *)mixer->slots[ch].private_data; 1219 if (slot && slot->assigned && 1220 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str)) 1221 /* not changed */ 1222 goto __unlock; 1223 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); 1224 if (!tbl) 1225 goto __unlock; 1226 tbl->oss_id = ch; 1227 tbl->name = kstrdup(str, GFP_KERNEL); 1228 if (! tbl->name) { 1229 kfree(tbl); 1230 goto __unlock; 1231 } 1232 tbl->index = idx; 1233 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) { 1234 kfree(tbl->name); 1235 kfree(tbl); 1236 } 1237 __unlock: 1238 mutex_unlock(&mixer->reg_mutex); 1239 } 1240 } 1241 1242 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer) 1243 { 1244 struct snd_info_entry *entry; 1245 1246 entry = snd_info_create_card_entry(mixer->card, "oss_mixer", 1247 mixer->card->proc_root); 1248 if (! entry) 1249 return; 1250 entry->content = SNDRV_INFO_CONTENT_TEXT; 1251 entry->mode = S_IFREG | 0644; 1252 entry->c.text.read = snd_mixer_oss_proc_read; 1253 entry->c.text.write = snd_mixer_oss_proc_write; 1254 entry->private_data = mixer; 1255 if (snd_info_register(entry) < 0) { 1256 snd_info_free_entry(entry); 1257 entry = NULL; 1258 } 1259 mixer->proc_entry = entry; 1260 } 1261 1262 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer) 1263 { 1264 snd_info_free_entry(mixer->proc_entry); 1265 mixer->proc_entry = NULL; 1266 } 1267 #else /* !CONFIG_SND_PROC_FS */ 1268 #define snd_mixer_oss_proc_init(mix) 1269 #define snd_mixer_oss_proc_done(mix) 1270 #endif /* CONFIG_SND_PROC_FS */ 1271 1272 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer) 1273 { 1274 static const struct snd_mixer_oss_assign_table table[] = { 1275 { SOUND_MIXER_VOLUME, "Master", 0 }, 1276 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */ 1277 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 }, 1278 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 }, 1279 { SOUND_MIXER_SYNTH, "Synth", 0 }, 1280 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */ 1281 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */ 1282 { SOUND_MIXER_PCM, "PCM", 0 }, 1283 { SOUND_MIXER_SPEAKER, "Beep", 0 }, 1284 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */ 1285 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */ 1286 { SOUND_MIXER_LINE, "Line", 0 }, 1287 { SOUND_MIXER_MIC, "Mic", 0 }, 1288 { SOUND_MIXER_CD, "CD", 0 }, 1289 { SOUND_MIXER_IMIX, "Monitor Mix", 0 }, 1290 { SOUND_MIXER_ALTPCM, "PCM", 1 }, 1291 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */ 1292 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */ 1293 { SOUND_MIXER_RECLEV, "-- nothing --", 0 }, 1294 { SOUND_MIXER_IGAIN, "Capture", 0 }, 1295 { SOUND_MIXER_OGAIN, "Playback", 0 }, 1296 { SOUND_MIXER_LINE1, "Aux", 0 }, 1297 { SOUND_MIXER_LINE2, "Aux", 1 }, 1298 { SOUND_MIXER_LINE3, "Aux", 2 }, 1299 { SOUND_MIXER_DIGITAL1, "Digital", 0 }, 1300 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */ 1301 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */ 1302 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */ 1303 { SOUND_MIXER_DIGITAL2, "Digital", 1 }, 1304 { SOUND_MIXER_DIGITAL3, "Digital", 2 }, 1305 { SOUND_MIXER_PHONEIN, "Phone", 0 }, 1306 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 }, 1307 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/ 1308 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/ 1309 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */ 1310 { SOUND_MIXER_VIDEO, "Video", 0 }, 1311 { SOUND_MIXER_RADIO, "Radio", 0 }, 1312 { SOUND_MIXER_MONITOR, "Monitor", 0 } 1313 }; 1314 unsigned int idx; 1315 1316 for (idx = 0; idx < ARRAY_SIZE(table); idx++) 1317 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0); 1318 if (mixer->mask_recsrc) { 1319 mixer->get_recsrc = snd_mixer_oss_get_recsrc2; 1320 mixer->put_recsrc = snd_mixer_oss_put_recsrc2; 1321 } 1322 } 1323 1324 /* 1325 * 1326 */ 1327 1328 static int snd_mixer_oss_free1(void *private) 1329 { 1330 struct snd_mixer_oss *mixer = private; 1331 struct snd_card *card; 1332 int idx; 1333 1334 if (!mixer) 1335 return 0; 1336 card = mixer->card; 1337 if (snd_BUG_ON(mixer != card->mixer_oss)) 1338 return -ENXIO; 1339 card->mixer_oss = NULL; 1340 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) { 1341 struct snd_mixer_oss_slot *chn = &mixer->slots[idx]; 1342 if (chn->private_free) 1343 chn->private_free(chn); 1344 } 1345 kfree(mixer); 1346 return 0; 1347 } 1348 1349 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd) 1350 { 1351 struct snd_mixer_oss *mixer; 1352 1353 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) { 1354 int idx, err; 1355 1356 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL); 1357 if (mixer == NULL) 1358 return -ENOMEM; 1359 mutex_init(&mixer->reg_mutex); 1360 err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, 1361 card, 0, 1362 &snd_mixer_oss_f_ops, card); 1363 if (err < 0) { 1364 dev_err(card->dev, 1365 "unable to register OSS mixer device %i:%i\n", 1366 card->number, 0); 1367 kfree(mixer); 1368 return err; 1369 } 1370 mixer->oss_dev_alloc = 1; 1371 mixer->card = card; 1372 if (*card->mixername) 1373 strscpy(mixer->name, card->mixername, sizeof(mixer->name)); 1374 else 1375 snprintf(mixer->name, sizeof(mixer->name), 1376 "mixer%i", card->number); 1377 #ifdef SNDRV_OSS_INFO_DEV_MIXERS 1378 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS, 1379 card->number, 1380 mixer->name); 1381 #endif 1382 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) 1383 mixer->slots[idx].number = idx; 1384 card->mixer_oss = mixer; 1385 snd_mixer_oss_build(mixer); 1386 snd_mixer_oss_proc_init(mixer); 1387 } else { 1388 mixer = card->mixer_oss; 1389 if (mixer == NULL) 1390 return 0; 1391 if (mixer->oss_dev_alloc) { 1392 #ifdef SNDRV_OSS_INFO_DEV_MIXERS 1393 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number); 1394 #endif 1395 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); 1396 mixer->oss_dev_alloc = 0; 1397 } 1398 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) 1399 return 0; 1400 snd_mixer_oss_proc_done(mixer); 1401 return snd_mixer_oss_free1(mixer); 1402 } 1403 return 0; 1404 } 1405 1406 static int __init alsa_mixer_oss_init(void) 1407 { 1408 struct snd_card *card; 1409 int idx; 1410 1411 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler; 1412 for (idx = 0; idx < SNDRV_CARDS; idx++) { 1413 card = snd_card_ref(idx); 1414 if (card) { 1415 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_REGISTER); 1416 snd_card_unref(card); 1417 } 1418 } 1419 return 0; 1420 } 1421 1422 static void __exit alsa_mixer_oss_exit(void) 1423 { 1424 struct snd_card *card; 1425 int idx; 1426 1427 snd_mixer_oss_notify_callback = NULL; 1428 for (idx = 0; idx < SNDRV_CARDS; idx++) { 1429 card = snd_card_ref(idx); 1430 if (card) { 1431 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_FREE); 1432 snd_card_unref(card); 1433 } 1434 } 1435 } 1436 1437 module_init(alsa_mixer_oss_init) 1438 module_exit(alsa_mixer_oss_exit) 1439