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