mixer_oss.c revision d2e8e52976b9d0a34db529b06952d5187b78af8c
1/* 2 * OSS emulation layer for the mixer interface 3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz> 4 * 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 * 20 */ 21 22#include <linux/init.h> 23#include <linux/slab.h> 24#include <linux/time.h> 25#include <linux/string.h> 26#include <sound/core.h> 27#include <sound/minors.h> 28#include <sound/control.h> 29#include <sound/info.h> 30#include <sound/mixer_oss.h> 31#include <linux/soundcard.h> 32 33#define OSS_ALSAEMULVER _SIOR ('M', 249, int) 34 35MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 36MODULE_DESCRIPTION("Mixer OSS emulation for ALSA."); 37MODULE_LICENSE("GPL"); 38MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER); 39 40static int snd_mixer_oss_open(struct inode *inode, struct file *file) 41{ 42 struct snd_card *card; 43 struct snd_mixer_oss_file *fmixer; 44 int err; 45 46 card = snd_lookup_oss_minor_data(iminor(inode), 47 SNDRV_OSS_DEVICE_TYPE_MIXER); 48 if (card == NULL) 49 return -ENODEV; 50 if (card->mixer_oss == NULL) 51 return -ENODEV; 52 err = snd_card_file_add(card, file); 53 if (err < 0) 54 return err; 55 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL); 56 if (fmixer == NULL) { 57 snd_card_file_remove(card, file); 58 return -ENOMEM; 59 } 60 fmixer->card = card; 61 fmixer->mixer = card->mixer_oss; 62 file->private_data = fmixer; 63 if (!try_module_get(card->module)) { 64 kfree(fmixer); 65 snd_card_file_remove(card, file); 66 return -EFAULT; 67 } 68 return 0; 69} 70 71static int snd_mixer_oss_release(struct inode *inode, struct file *file) 72{ 73 struct snd_mixer_oss_file *fmixer; 74 75 if (file->private_data) { 76 fmixer = (struct snd_mixer_oss_file *) file->private_data; 77 module_put(fmixer->card->module); 78 snd_card_file_remove(fmixer->card, file); 79 kfree(fmixer); 80 } 81 return 0; 82} 83 84static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer, 85 mixer_info __user *_info) 86{ 87 struct snd_card *card = fmixer->card; 88 struct snd_mixer_oss *mixer = fmixer->mixer; 89 struct mixer_info info; 90 91 memset(&info, 0, sizeof(info)); 92 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id)); 93 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name)); 94 info.modify_counter = card->mixer_oss_change_count; 95 if (copy_to_user(_info, &info, sizeof(info))) 96 return -EFAULT; 97 return 0; 98} 99 100static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer, 101 _old_mixer_info __user *_info) 102{ 103 struct snd_card *card = fmixer->card; 104 struct snd_mixer_oss *mixer = fmixer->mixer; 105 _old_mixer_info info; 106 107 memset(&info, 0, sizeof(info)); 108 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id)); 109 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name)); 110 if (copy_to_user(_info, &info, sizeof(info))) 111 return -EFAULT; 112 return 0; 113} 114 115static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer) 116{ 117 struct snd_mixer_oss *mixer = fmixer->mixer; 118 int result = 0; 119 120 if (mixer == NULL) 121 return -EIO; 122 if (mixer->get_recsrc && mixer->put_recsrc) 123 result |= SOUND_CAP_EXCL_INPUT; 124 return result; 125} 126 127static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer) 128{ 129 struct snd_mixer_oss *mixer = fmixer->mixer; 130 struct snd_mixer_oss_slot *pslot; 131 int result = 0, chn; 132 133 if (mixer == NULL) 134 return -EIO; 135 for (chn = 0; chn < 31; chn++) { 136 pslot = &mixer->slots[chn]; 137 if (pslot->put_volume || pslot->put_recsrc) 138 result |= 1 << chn; 139 } 140 return result; 141} 142 143static 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 for (chn = 0; chn < 31; chn++) { 152 pslot = &mixer->slots[chn]; 153 if (pslot->put_volume && pslot->stereo) 154 result |= 1 << chn; 155 } 156 return result; 157} 158 159static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer) 160{ 161 struct snd_mixer_oss *mixer = fmixer->mixer; 162 int result = 0; 163 164 if (mixer == NULL) 165 return -EIO; 166 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ 167 result = mixer->mask_recsrc; 168 } else { 169 struct snd_mixer_oss_slot *pslot; 170 int chn; 171 for (chn = 0; chn < 31; chn++) { 172 pslot = &mixer->slots[chn]; 173 if (pslot->put_recsrc) 174 result |= 1 << chn; 175 } 176 } 177 return result; 178} 179 180static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer) 181{ 182 struct snd_mixer_oss *mixer = fmixer->mixer; 183 int result = 0; 184 185 if (mixer == NULL) 186 return -EIO; 187 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ 188 int err; 189 if ((err = mixer->get_recsrc(fmixer, &result)) < 0) 190 return err; 191 result = 1 << result; 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 208static 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 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, &result); 222 result = 1 << result; 223 } 224 for (chn = 0; chn < 31; chn++) { 225 pslot = &mixer->slots[chn]; 226 if (pslot->put_recsrc) { 227 active = (recsrc & (1 << chn)) ? 1 : 0; 228 pslot->put_recsrc(fmixer, pslot, active); 229 } 230 } 231 if (! result) { 232 for (chn = 0; chn < 31; chn++) { 233 pslot = &mixer->slots[chn]; 234 if (pslot->get_recsrc) { 235 active = 0; 236 pslot->get_recsrc(fmixer, pslot, &active); 237 if (active) 238 result |= 1 << chn; 239 } 240 } 241 } 242 return result; 243} 244 245static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot) 246{ 247 struct snd_mixer_oss *mixer = fmixer->mixer; 248 struct snd_mixer_oss_slot *pslot; 249 int result = 0, left, right; 250 251 if (mixer == NULL || slot > 30) 252 return -EIO; 253 pslot = &mixer->slots[slot]; 254 left = pslot->volume[0]; 255 right = pslot->volume[1]; 256 if (pslot->get_volume) 257 result = pslot->get_volume(fmixer, pslot, &left, &right); 258 if (!pslot->stereo) 259 right = left; 260 if (snd_BUG_ON(left < 0 || left > 100)) 261 return -EIO; 262 if (snd_BUG_ON(right < 0 || right > 100)) 263 return -EIO; 264 if (result >= 0) { 265 pslot->volume[0] = left; 266 pslot->volume[1] = right; 267 result = (left & 0xff) | ((right & 0xff) << 8); 268 } 269 return result; 270} 271 272static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer, 273 int slot, int volume) 274{ 275 struct snd_mixer_oss *mixer = fmixer->mixer; 276 struct snd_mixer_oss_slot *pslot; 277 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff; 278 279 if (mixer == NULL || slot > 30) 280 return -EIO; 281 pslot = &mixer->slots[slot]; 282 if (left > 100) 283 left = 100; 284 if (right > 100) 285 right = 100; 286 if (!pslot->stereo) 287 right = left; 288 if (pslot->put_volume) 289 result = pslot->put_volume(fmixer, pslot, left, right); 290 if (result < 0) 291 return result; 292 pslot->volume[0] = left; 293 pslot->volume[1] = right; 294 return (left & 0xff) | ((right & 0xff) << 8); 295} 296 297static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg) 298{ 299 void __user *argp = (void __user *)arg; 300 int __user *p = argp; 301 int tmp; 302 303 if (snd_BUG_ON(!fmixer)) 304 return -ENXIO; 305 if (((cmd >> 8) & 0xff) == 'M') { 306 switch (cmd) { 307 case SOUND_MIXER_INFO: 308 return snd_mixer_oss_info(fmixer, argp); 309 case SOUND_OLD_MIXER_INFO: 310 return snd_mixer_oss_info_obsolete(fmixer, argp); 311 case SOUND_MIXER_WRITE_RECSRC: 312 if (get_user(tmp, p)) 313 return -EFAULT; 314 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp); 315 if (tmp < 0) 316 return tmp; 317 return put_user(tmp, p); 318 case OSS_GETVERSION: 319 return put_user(SNDRV_OSS_VERSION, p); 320 case OSS_ALSAEMULVER: 321 return put_user(1, p); 322 case SOUND_MIXER_READ_DEVMASK: 323 tmp = snd_mixer_oss_devmask(fmixer); 324 if (tmp < 0) 325 return tmp; 326 return put_user(tmp, p); 327 case SOUND_MIXER_READ_STEREODEVS: 328 tmp = snd_mixer_oss_stereodevs(fmixer); 329 if (tmp < 0) 330 return tmp; 331 return put_user(tmp, p); 332 case SOUND_MIXER_READ_RECMASK: 333 tmp = snd_mixer_oss_recmask(fmixer); 334 if (tmp < 0) 335 return tmp; 336 return put_user(tmp, p); 337 case SOUND_MIXER_READ_CAPS: 338 tmp = snd_mixer_oss_caps(fmixer); 339 if (tmp < 0) 340 return tmp; 341 return put_user(tmp, p); 342 case SOUND_MIXER_READ_RECSRC: 343 tmp = snd_mixer_oss_get_recsrc(fmixer); 344 if (tmp < 0) 345 return tmp; 346 return put_user(tmp, p); 347 } 348 } 349 if (cmd & SIOC_IN) { 350 if (get_user(tmp, p)) 351 return -EFAULT; 352 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp); 353 if (tmp < 0) 354 return tmp; 355 return put_user(tmp, p); 356 } else if (cmd & SIOC_OUT) { 357 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff); 358 if (tmp < 0) 359 return tmp; 360 return put_user(tmp, p); 361 } 362 return -ENXIO; 363} 364 365static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 366{ 367 return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg); 368} 369 370int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg) 371{ 372 struct snd_mixer_oss_file fmixer; 373 374 if (snd_BUG_ON(!card)) 375 return -ENXIO; 376 if (card->mixer_oss == NULL) 377 return -ENXIO; 378 memset(&fmixer, 0, sizeof(fmixer)); 379 fmixer.card = card; 380 fmixer.mixer = card->mixer_oss; 381 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg); 382} 383 384#ifdef CONFIG_COMPAT 385/* all compatible */ 386#define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl 387#else 388#define snd_mixer_oss_ioctl_compat NULL 389#endif 390 391/* 392 * REGISTRATION PART 393 */ 394 395static const struct file_operations snd_mixer_oss_f_ops = 396{ 397 .owner = THIS_MODULE, 398 .open = snd_mixer_oss_open, 399 .release = snd_mixer_oss_release, 400 .unlocked_ioctl = snd_mixer_oss_ioctl, 401 .compat_ioctl = snd_mixer_oss_ioctl_compat, 402}; 403 404/* 405 * utilities 406 */ 407 408static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax) 409{ 410 long orange = omax - omin, nrange = nmax - nmin; 411 412 if (orange == 0) 413 return 0; 414 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin; 415} 416 417/* convert from alsa native to oss values (0-100) */ 418static long snd_mixer_oss_conv1(long val, long min, long max, int *old) 419{ 420 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max)) 421 return *old; 422 return snd_mixer_oss_conv(val, min, max, 0, 100); 423} 424 425/* convert from oss to alsa native values */ 426static long snd_mixer_oss_conv2(long val, long min, long max) 427{ 428 return snd_mixer_oss_conv(val, 0, 100, min, max); 429} 430 431#if 0 432static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot) 433{ 434 struct snd_mixer_oss *mixer = card->mixer_oss; 435 if (mixer) 436 mixer->mask_recsrc |= 1 << slot; 437} 438 439static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot) 440{ 441 struct snd_mixer_oss *mixer = card->mixer_oss; 442 if (mixer && (mixer->mask_recsrc & (1 << slot))) 443 return 1; 444 return 0; 445} 446#endif 447 448#define SNDRV_MIXER_OSS_SIGNATURE 0x65999250 449 450#define SNDRV_MIXER_OSS_ITEM_GLOBAL 0 451#define SNDRV_MIXER_OSS_ITEM_GSWITCH 1 452#define SNDRV_MIXER_OSS_ITEM_GROUTE 2 453#define SNDRV_MIXER_OSS_ITEM_GVOLUME 3 454#define SNDRV_MIXER_OSS_ITEM_PSWITCH 4 455#define SNDRV_MIXER_OSS_ITEM_PROUTE 5 456#define SNDRV_MIXER_OSS_ITEM_PVOLUME 6 457#define SNDRV_MIXER_OSS_ITEM_CSWITCH 7 458#define SNDRV_MIXER_OSS_ITEM_CROUTE 8 459#define SNDRV_MIXER_OSS_ITEM_CVOLUME 9 460#define SNDRV_MIXER_OSS_ITEM_CAPTURE 10 461 462#define SNDRV_MIXER_OSS_ITEM_COUNT 11 463 464#define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0) 465#define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1) 466#define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2) 467#define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3) 468#define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4) 469#define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5) 470#define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6) 471#define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7) 472#define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8) 473#define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9) 474#define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10) 475 476struct slot { 477 unsigned int signature; 478 unsigned int present; 479 unsigned int channels; 480 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT]; 481 unsigned int capture_item; 482 struct snd_mixer_oss_assign_table *assigned; 483 unsigned int allocated: 1; 484}; 485 486#define ID_UNKNOWN ((unsigned int)-1) 487 488static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index) 489{ 490 struct snd_card *card = mixer->card; 491 struct snd_ctl_elem_id id; 492 493 memset(&id, 0, sizeof(id)); 494 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; 495 strcpy(id.name, name); 496 id.index = index; 497 return snd_ctl_find_id(card, &id); 498} 499 500static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer, 501 struct snd_mixer_oss_slot *pslot, 502 unsigned int numid, 503 int *left, int *right) 504{ 505 struct snd_ctl_elem_info *uinfo; 506 struct snd_ctl_elem_value *uctl; 507 struct snd_kcontrol *kctl; 508 struct snd_card *card = fmixer->card; 509 510 if (numid == ID_UNKNOWN) 511 return; 512 down_read(&card->controls_rwsem); 513 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 514 up_read(&card->controls_rwsem); 515 return; 516 } 517 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 518 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 519 if (uinfo == NULL || uctl == NULL) 520 goto __unalloc; 521 if (kctl->info(kctl, uinfo)) 522 goto __unalloc; 523 if (kctl->get(kctl, uctl)) 524 goto __unalloc; 525 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && 526 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) 527 goto __unalloc; 528 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]); 529 if (uinfo->count > 1) 530 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]); 531 __unalloc: 532 up_read(&card->controls_rwsem); 533 kfree(uctl); 534 kfree(uinfo); 535} 536 537static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer, 538 struct snd_mixer_oss_slot *pslot, 539 unsigned int numid, 540 int *left, int *right, 541 int route) 542{ 543 struct snd_ctl_elem_info *uinfo; 544 struct snd_ctl_elem_value *uctl; 545 struct snd_kcontrol *kctl; 546 struct snd_card *card = fmixer->card; 547 548 if (numid == ID_UNKNOWN) 549 return; 550 down_read(&card->controls_rwsem); 551 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 552 up_read(&card->controls_rwsem); 553 return; 554 } 555 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 556 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 557 if (uinfo == NULL || uctl == NULL) 558 goto __unalloc; 559 if (kctl->info(kctl, uinfo)) 560 goto __unalloc; 561 if (kctl->get(kctl, uctl)) 562 goto __unalloc; 563 if (!uctl->value.integer.value[0]) { 564 *left = 0; 565 if (uinfo->count == 1) 566 *right = 0; 567 } 568 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1]) 569 *right = 0; 570 __unalloc: 571 up_read(&card->controls_rwsem); 572 kfree(uctl); 573 kfree(uinfo); 574} 575 576static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer, 577 struct snd_mixer_oss_slot *pslot, 578 int *left, int *right) 579{ 580 struct slot *slot = (struct slot *)pslot->private_data; 581 582 *left = *right = 100; 583 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { 584 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); 585 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { 586 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); 587 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { 588 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); 589 } 590 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { 591 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 592 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { 593 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 594 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { 595 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 596 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { 597 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 598 } 599 return 0; 600} 601 602static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer, 603 struct snd_mixer_oss_slot *pslot, 604 unsigned int numid, 605 int left, int right) 606{ 607 struct snd_ctl_elem_info *uinfo; 608 struct snd_ctl_elem_value *uctl; 609 struct snd_kcontrol *kctl; 610 struct snd_card *card = fmixer->card; 611 int res; 612 613 if (numid == ID_UNKNOWN) 614 return; 615 down_read(&card->controls_rwsem); 616 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) 617 return; 618 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 619 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 620 if (uinfo == NULL || uctl == NULL) 621 goto __unalloc; 622 if (kctl->info(kctl, uinfo)) 623 goto __unalloc; 624 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && 625 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) 626 goto __unalloc; 627 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max); 628 if (uinfo->count > 1) 629 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max); 630 if ((res = kctl->put(kctl, uctl)) < 0) 631 goto __unalloc; 632 if (res > 0) 633 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 634 __unalloc: 635 up_read(&card->controls_rwsem); 636 kfree(uctl); 637 kfree(uinfo); 638} 639 640static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer, 641 struct snd_mixer_oss_slot *pslot, 642 unsigned int numid, 643 int left, int right, 644 int route) 645{ 646 struct snd_ctl_elem_info *uinfo; 647 struct snd_ctl_elem_value *uctl; 648 struct snd_kcontrol *kctl; 649 struct snd_card *card = fmixer->card; 650 int res; 651 652 if (numid == ID_UNKNOWN) 653 return; 654 down_read(&card->controls_rwsem); 655 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 656 up_read(&fmixer->card->controls_rwsem); 657 return; 658 } 659 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 660 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 661 if (uinfo == NULL || uctl == NULL) 662 goto __unalloc; 663 if (kctl->info(kctl, uinfo)) 664 goto __unalloc; 665 if (uinfo->count > 1) { 666 uctl->value.integer.value[0] = left > 0 ? 1 : 0; 667 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0; 668 if (route) { 669 uctl->value.integer.value[1] = 670 uctl->value.integer.value[2] = 0; 671 } 672 } else { 673 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0; 674 } 675 if ((res = kctl->put(kctl, uctl)) < 0) 676 goto __unalloc; 677 if (res > 0) 678 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 679 __unalloc: 680 up_read(&card->controls_rwsem); 681 kfree(uctl); 682 kfree(uinfo); 683} 684 685static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer, 686 struct snd_mixer_oss_slot *pslot, 687 int left, int right) 688{ 689 struct slot *slot = (struct slot *)pslot->private_data; 690 691 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { 692 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); 693 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) 694 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); 695 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) { 696 snd_mixer_oss_put_volume1_vol(fmixer, pslot, 697 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); 698 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { 699 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); 700 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { 701 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); 702 } 703 if (left || right) { 704 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) 705 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 706 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) 707 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0); 708 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) 709 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 710 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) 711 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 712 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) 713 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1); 714 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) 715 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 716 } else { 717 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { 718 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 719 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { 720 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0); 721 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { 722 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 723 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { 724 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 725 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { 726 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1); 727 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { 728 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 729 } 730 } 731 return 0; 732} 733 734static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer, 735 struct snd_mixer_oss_slot *pslot, 736 int *active) 737{ 738 struct slot *slot = (struct slot *)pslot->private_data; 739 int left, right; 740 741 left = right = 1; 742 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0); 743 *active = (left || right) ? 1 : 0; 744 return 0; 745} 746 747static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer, 748 struct snd_mixer_oss_slot *pslot, 749 int *active) 750{ 751 struct slot *slot = (struct slot *)pslot->private_data; 752 int left, right; 753 754 left = right = 1; 755 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1); 756 *active = (left || right) ? 1 : 0; 757 return 0; 758} 759 760static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer, 761 struct snd_mixer_oss_slot *pslot, 762 int active) 763{ 764 struct slot *slot = (struct slot *)pslot->private_data; 765 766 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0); 767 return 0; 768} 769 770static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer, 771 struct snd_mixer_oss_slot *pslot, 772 int active) 773{ 774 struct slot *slot = (struct slot *)pslot->private_data; 775 776 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1); 777 return 0; 778} 779 780static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index) 781{ 782 struct snd_card *card = fmixer->card; 783 struct snd_mixer_oss *mixer = fmixer->mixer; 784 struct snd_kcontrol *kctl; 785 struct snd_mixer_oss_slot *pslot; 786 struct slot *slot; 787 struct snd_ctl_elem_info *uinfo; 788 struct snd_ctl_elem_value *uctl; 789 int err, idx; 790 791 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 792 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 793 if (uinfo == NULL || uctl == NULL) { 794 err = -ENOMEM; 795 goto __unlock; 796 } 797 down_read(&card->controls_rwsem); 798 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); 799 if (! kctl) { 800 err = -ENOENT; 801 goto __unlock; 802 } 803 if ((err = kctl->info(kctl, uinfo)) < 0) 804 goto __unlock; 805 if ((err = kctl->get(kctl, uctl)) < 0) 806 goto __unlock; 807 for (idx = 0; idx < 32; idx++) { 808 if (!(mixer->mask_recsrc & (1 << idx))) 809 continue; 810 pslot = &mixer->slots[idx]; 811 slot = (struct slot *)pslot->private_data; 812 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) 813 continue; 814 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) 815 continue; 816 if (slot->capture_item == uctl->value.enumerated.item[0]) { 817 *active_index = idx; 818 break; 819 } 820 } 821 err = 0; 822 __unlock: 823 up_read(&card->controls_rwsem); 824 kfree(uctl); 825 kfree(uinfo); 826 return err; 827} 828 829static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index) 830{ 831 struct snd_card *card = fmixer->card; 832 struct snd_mixer_oss *mixer = fmixer->mixer; 833 struct snd_kcontrol *kctl; 834 struct snd_mixer_oss_slot *pslot; 835 struct slot *slot = NULL; 836 struct snd_ctl_elem_info *uinfo; 837 struct snd_ctl_elem_value *uctl; 838 int err; 839 unsigned int idx; 840 841 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 842 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 843 if (uinfo == NULL || uctl == NULL) { 844 err = -ENOMEM; 845 goto __unlock; 846 } 847 down_read(&card->controls_rwsem); 848 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); 849 if (! kctl) { 850 err = -ENOENT; 851 goto __unlock; 852 } 853 if ((err = kctl->info(kctl, uinfo)) < 0) 854 goto __unlock; 855 for (idx = 0; idx < 32; idx++) { 856 if (!(mixer->mask_recsrc & (1 << idx))) 857 continue; 858 pslot = &mixer->slots[idx]; 859 slot = (struct slot *)pslot->private_data; 860 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) 861 continue; 862 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) 863 continue; 864 if (idx == active_index) 865 break; 866 slot = NULL; 867 } 868 if (! slot) 869 goto __unlock; 870 for (idx = 0; idx < uinfo->count; idx++) 871 uctl->value.enumerated.item[idx] = slot->capture_item; 872 err = kctl->put(kctl, uctl); 873 if (err > 0) 874 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 875 err = 0; 876 __unlock: 877 up_read(&card->controls_rwsem); 878 kfree(uctl); 879 kfree(uinfo); 880 return err; 881} 882 883struct snd_mixer_oss_assign_table { 884 int oss_id; 885 const char *name; 886 int index; 887}; 888 889static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item) 890{ 891 struct snd_ctl_elem_info *info; 892 struct snd_kcontrol *kcontrol; 893 struct snd_card *card = mixer->card; 894 int err; 895 896 down_read(&card->controls_rwsem); 897 kcontrol = snd_mixer_oss_test_id(mixer, name, index); 898 if (kcontrol == NULL) { 899 up_read(&card->controls_rwsem); 900 return 0; 901 } 902 info = kmalloc(sizeof(*info), GFP_KERNEL); 903 if (! info) { 904 up_read(&card->controls_rwsem); 905 return -ENOMEM; 906 } 907 if ((err = kcontrol->info(kcontrol, info)) < 0) { 908 up_read(&card->controls_rwsem); 909 kfree(info); 910 return err; 911 } 912 slot->numid[item] = kcontrol->id.numid; 913 up_read(&card->controls_rwsem); 914 if (info->count > slot->channels) 915 slot->channels = info->count; 916 slot->present |= 1 << item; 917 kfree(info); 918 return 0; 919} 920 921static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn) 922{ 923 struct slot *p = (struct slot *)chn->private_data; 924 if (p) { 925 if (p->allocated && p->assigned) { 926 kfree(p->assigned->name); 927 kfree(p->assigned); 928 } 929 kfree(p); 930 } 931} 932 933static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot) 934{ 935 int idx = rslot->number; /* remember this */ 936 if (rslot->private_free) 937 rslot->private_free(rslot); 938 memset(rslot, 0, sizeof(*rslot)); 939 rslot->number = idx; 940} 941 942/* In a separate function to keep gcc 3.2 happy - do NOT merge this in 943 snd_mixer_oss_build_input! */ 944static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer, 945 struct snd_mixer_oss_assign_table *ptr, 946 struct slot *slot) 947{ 948 char str[64]; 949 int err; 950 951 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index, 952 SNDRV_MIXER_OSS_ITEM_GLOBAL); 953 if (err) 954 return err; 955 sprintf(str, "%s Switch", ptr->name); 956 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 957 SNDRV_MIXER_OSS_ITEM_GSWITCH); 958 if (err) 959 return err; 960 sprintf(str, "%s Route", ptr->name); 961 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 962 SNDRV_MIXER_OSS_ITEM_GROUTE); 963 if (err) 964 return err; 965 sprintf(str, "%s Volume", ptr->name); 966 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 967 SNDRV_MIXER_OSS_ITEM_GVOLUME); 968 if (err) 969 return err; 970 sprintf(str, "%s Playback Switch", ptr->name); 971 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 972 SNDRV_MIXER_OSS_ITEM_PSWITCH); 973 if (err) 974 return err; 975 sprintf(str, "%s Playback Route", ptr->name); 976 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 977 SNDRV_MIXER_OSS_ITEM_PROUTE); 978 if (err) 979 return err; 980 sprintf(str, "%s Playback Volume", ptr->name); 981 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 982 SNDRV_MIXER_OSS_ITEM_PVOLUME); 983 if (err) 984 return err; 985 sprintf(str, "%s Capture Switch", ptr->name); 986 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 987 SNDRV_MIXER_OSS_ITEM_CSWITCH); 988 if (err) 989 return err; 990 sprintf(str, "%s Capture Route", ptr->name); 991 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 992 SNDRV_MIXER_OSS_ITEM_CROUTE); 993 if (err) 994 return err; 995 sprintf(str, "%s Capture Volume", ptr->name); 996 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 997 SNDRV_MIXER_OSS_ITEM_CVOLUME); 998 if (err) 999 return err; 1000 1001 return 0; 1002} 1003 1004/* 1005 * build an OSS mixer element. 1006 * ptr_allocated means the entry is dynamically allocated (change via proc file). 1007 * when replace_old = 1, the old entry is replaced with the new one. 1008 */ 1009static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old) 1010{ 1011 struct slot slot; 1012 struct slot *pslot; 1013 struct snd_kcontrol *kctl; 1014 struct snd_mixer_oss_slot *rslot; 1015 char str[64]; 1016 1017 /* check if already assigned */ 1018 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old) 1019 return 0; 1020 1021 memset(&slot, 0, sizeof(slot)); 1022 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */ 1023 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot)) 1024 return 0; 1025 down_read(&mixer->card->controls_rwsem); 1026 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) { 1027 struct snd_ctl_elem_info *uinfo; 1028 1029 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 1030 if (! uinfo) { 1031 up_read(&mixer->card->controls_rwsem); 1032 return -ENOMEM; 1033 } 1034 1035 if (kctl->info(kctl, uinfo)) { 1036 up_read(&mixer->card->controls_rwsem); 1037 return 0; 1038 } 1039 strcpy(str, ptr->name); 1040 if (!strcmp(str, "Master")) 1041 strcpy(str, "Mix"); 1042 if (!strcmp(str, "Master Mono")) 1043 strcpy(str, "Mix Mono"); 1044 slot.capture_item = 0; 1045 if (!strcmp(uinfo->value.enumerated.name, str)) { 1046 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; 1047 } else { 1048 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) { 1049 uinfo->value.enumerated.item = slot.capture_item; 1050 if (kctl->info(kctl, uinfo)) { 1051 up_read(&mixer->card->controls_rwsem); 1052 return 0; 1053 } 1054 if (!strcmp(uinfo->value.enumerated.name, str)) { 1055 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; 1056 break; 1057 } 1058 } 1059 } 1060 kfree(uinfo); 1061 } 1062 up_read(&mixer->card->controls_rwsem); 1063 if (slot.present != 0) { 1064 pslot = kmalloc(sizeof(slot), GFP_KERNEL); 1065 if (! pslot) 1066 return -ENOMEM; 1067 *pslot = slot; 1068 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE; 1069 pslot->assigned = ptr; 1070 pslot->allocated = ptr_allocated; 1071 rslot = &mixer->slots[ptr->oss_id]; 1072 mixer_slot_clear(rslot); 1073 rslot->stereo = slot.channels > 1 ? 1 : 0; 1074 rslot->get_volume = snd_mixer_oss_get_volume1; 1075 rslot->put_volume = snd_mixer_oss_put_volume1; 1076 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */ 1077 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { 1078 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw; 1079 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw; 1080 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { 1081 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route; 1082 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route; 1083 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) { 1084 mixer->mask_recsrc |= 1 << ptr->oss_id; 1085 } 1086 rslot->private_data = pslot; 1087 rslot->private_free = snd_mixer_oss_slot_free; 1088 return 1; 1089 } 1090 return 0; 1091} 1092 1093#ifdef CONFIG_PROC_FS 1094/* 1095 */ 1096#define MIXER_VOL(name) [SOUND_MIXER_##name] = #name 1097static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = { 1098 MIXER_VOL(VOLUME), 1099 MIXER_VOL(BASS), 1100 MIXER_VOL(TREBLE), 1101 MIXER_VOL(SYNTH), 1102 MIXER_VOL(PCM), 1103 MIXER_VOL(SPEAKER), 1104 MIXER_VOL(LINE), 1105 MIXER_VOL(MIC), 1106 MIXER_VOL(CD), 1107 MIXER_VOL(IMIX), 1108 MIXER_VOL(ALTPCM), 1109 MIXER_VOL(RECLEV), 1110 MIXER_VOL(IGAIN), 1111 MIXER_VOL(OGAIN), 1112 MIXER_VOL(LINE1), 1113 MIXER_VOL(LINE2), 1114 MIXER_VOL(LINE3), 1115 MIXER_VOL(DIGITAL1), 1116 MIXER_VOL(DIGITAL2), 1117 MIXER_VOL(DIGITAL3), 1118 MIXER_VOL(PHONEIN), 1119 MIXER_VOL(PHONEOUT), 1120 MIXER_VOL(VIDEO), 1121 MIXER_VOL(RADIO), 1122 MIXER_VOL(MONITOR), 1123}; 1124 1125/* 1126 * /proc interface 1127 */ 1128 1129static void snd_mixer_oss_proc_read(struct snd_info_entry *entry, 1130 struct snd_info_buffer *buffer) 1131{ 1132 struct snd_mixer_oss *mixer = entry->private_data; 1133 int i; 1134 1135 mutex_lock(&mixer->reg_mutex); 1136 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) { 1137 struct slot *p; 1138 1139 if (! oss_mixer_names[i]) 1140 continue; 1141 p = (struct slot *)mixer->slots[i].private_data; 1142 snd_iprintf(buffer, "%s ", oss_mixer_names[i]); 1143 if (p && p->assigned) 1144 snd_iprintf(buffer, "\"%s\" %d\n", 1145 p->assigned->name, 1146 p->assigned->index); 1147 else 1148 snd_iprintf(buffer, "\"\" 0\n"); 1149 } 1150 mutex_unlock(&mixer->reg_mutex); 1151} 1152 1153static void snd_mixer_oss_proc_write(struct snd_info_entry *entry, 1154 struct snd_info_buffer *buffer) 1155{ 1156 struct snd_mixer_oss *mixer = entry->private_data; 1157 char line[128], str[32], idxstr[16], *cptr; 1158 int ch, idx; 1159 struct snd_mixer_oss_assign_table *tbl; 1160 struct slot *slot; 1161 1162 while (!snd_info_get_line(buffer, line, sizeof(line))) { 1163 cptr = snd_info_get_str(str, line, sizeof(str)); 1164 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++) 1165 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0) 1166 break; 1167 if (ch >= SNDRV_OSS_MAX_MIXERS) { 1168 snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str); 1169 continue; 1170 } 1171 cptr = snd_info_get_str(str, cptr, sizeof(str)); 1172 if (! *str) { 1173 /* remove the entry */ 1174 mutex_lock(&mixer->reg_mutex); 1175 mixer_slot_clear(&mixer->slots[ch]); 1176 mutex_unlock(&mixer->reg_mutex); 1177 continue; 1178 } 1179 snd_info_get_str(idxstr, cptr, sizeof(idxstr)); 1180 idx = simple_strtoul(idxstr, NULL, 10); 1181 if (idx >= 0x4000) { /* too big */ 1182 snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx); 1183 continue; 1184 } 1185 mutex_lock(&mixer->reg_mutex); 1186 slot = (struct slot *)mixer->slots[ch].private_data; 1187 if (slot && slot->assigned && 1188 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str)) 1189 /* not changed */ 1190 goto __unlock; 1191 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); 1192 if (! tbl) { 1193 snd_printk(KERN_ERR "mixer_oss: no memory\n"); 1194 goto __unlock; 1195 } 1196 tbl->oss_id = ch; 1197 tbl->name = kstrdup(str, GFP_KERNEL); 1198 if (! tbl->name) { 1199 kfree(tbl); 1200 goto __unlock; 1201 } 1202 tbl->index = idx; 1203 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) { 1204 kfree(tbl->name); 1205 kfree(tbl); 1206 } 1207 __unlock: 1208 mutex_unlock(&mixer->reg_mutex); 1209 } 1210} 1211 1212static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer) 1213{ 1214 struct snd_info_entry *entry; 1215 1216 entry = snd_info_create_card_entry(mixer->card, "oss_mixer", 1217 mixer->card->proc_root); 1218 if (! entry) 1219 return; 1220 entry->content = SNDRV_INFO_CONTENT_TEXT; 1221 entry->mode = S_IFREG | S_IRUGO | S_IWUSR; 1222 entry->c.text.read = snd_mixer_oss_proc_read; 1223 entry->c.text.write = snd_mixer_oss_proc_write; 1224 entry->private_data = mixer; 1225 if (snd_info_register(entry) < 0) { 1226 snd_info_free_entry(entry); 1227 entry = NULL; 1228 } 1229 mixer->proc_entry = entry; 1230} 1231 1232static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer) 1233{ 1234 snd_info_free_entry(mixer->proc_entry); 1235 mixer->proc_entry = NULL; 1236} 1237#else /* !CONFIG_PROC_FS */ 1238#define snd_mixer_oss_proc_init(mix) 1239#define snd_mixer_oss_proc_done(mix) 1240#endif /* CONFIG_PROC_FS */ 1241 1242static void snd_mixer_oss_build(struct snd_mixer_oss *mixer) 1243{ 1244 static struct snd_mixer_oss_assign_table table[] = { 1245 { SOUND_MIXER_VOLUME, "Master", 0 }, 1246 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */ 1247 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 }, 1248 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 }, 1249 { SOUND_MIXER_SYNTH, "Synth", 0 }, 1250 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */ 1251 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */ 1252 { SOUND_MIXER_PCM, "PCM", 0 }, 1253 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, 1254 { SOUND_MIXER_LINE, "Line", 0 }, 1255 { SOUND_MIXER_MIC, "Mic", 0 }, 1256 { SOUND_MIXER_CD, "CD", 0 }, 1257 { SOUND_MIXER_IMIX, "Monitor Mix", 0 }, 1258 { SOUND_MIXER_ALTPCM, "PCM", 1 }, 1259 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */ 1260 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */ 1261 { SOUND_MIXER_RECLEV, "-- nothing --", 0 }, 1262 { SOUND_MIXER_IGAIN, "Capture", 0 }, 1263 { SOUND_MIXER_OGAIN, "Playback", 0 }, 1264 { SOUND_MIXER_LINE1, "Aux", 0 }, 1265 { SOUND_MIXER_LINE2, "Aux", 1 }, 1266 { SOUND_MIXER_LINE3, "Aux", 2 }, 1267 { SOUND_MIXER_DIGITAL1, "Digital", 0 }, 1268 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */ 1269 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */ 1270 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */ 1271 { SOUND_MIXER_DIGITAL2, "Digital", 1 }, 1272 { SOUND_MIXER_DIGITAL3, "Digital", 2 }, 1273 { SOUND_MIXER_PHONEIN, "Phone", 0 }, 1274 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 }, 1275 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/ 1276 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/ 1277 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */ 1278 { SOUND_MIXER_VIDEO, "Video", 0 }, 1279 { SOUND_MIXER_RADIO, "Radio", 0 }, 1280 { SOUND_MIXER_MONITOR, "Monitor", 0 } 1281 }; 1282 unsigned int idx; 1283 1284 for (idx = 0; idx < ARRAY_SIZE(table); idx++) 1285 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0); 1286 if (mixer->mask_recsrc) { 1287 mixer->get_recsrc = snd_mixer_oss_get_recsrc2; 1288 mixer->put_recsrc = snd_mixer_oss_put_recsrc2; 1289 } 1290} 1291 1292/* 1293 * 1294 */ 1295 1296static int snd_mixer_oss_free1(void *private) 1297{ 1298 struct snd_mixer_oss *mixer = private; 1299 struct snd_card *card; 1300 int idx; 1301 1302 if (!mixer) 1303 return 0; 1304 card = mixer->card; 1305 if (snd_BUG_ON(mixer != card->mixer_oss)) 1306 return -ENXIO; 1307 card->mixer_oss = NULL; 1308 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) { 1309 struct snd_mixer_oss_slot *chn = &mixer->slots[idx]; 1310 if (chn->private_free) 1311 chn->private_free(chn); 1312 } 1313 kfree(mixer); 1314 return 0; 1315} 1316 1317static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd) 1318{ 1319 struct snd_mixer_oss *mixer; 1320 1321 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) { 1322 char name[128]; 1323 int idx, err; 1324 1325 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL); 1326 if (mixer == NULL) 1327 return -ENOMEM; 1328 mutex_init(&mixer->reg_mutex); 1329 sprintf(name, "mixer%i%i", card->number, 0); 1330 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, 1331 card, 0, 1332 &snd_mixer_oss_f_ops, card, 1333 name)) < 0) { 1334 snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n", 1335 card->number, 0); 1336 kfree(mixer); 1337 return err; 1338 } 1339 mixer->oss_dev_alloc = 1; 1340 mixer->card = card; 1341 if (*card->mixername) 1342 strlcpy(mixer->name, card->mixername, sizeof(mixer->name)); 1343 else 1344 strlcpy(mixer->name, name, sizeof(mixer->name)); 1345#ifdef SNDRV_OSS_INFO_DEV_MIXERS 1346 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS, 1347 card->number, 1348 mixer->name); 1349#endif 1350 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) 1351 mixer->slots[idx].number = idx; 1352 card->mixer_oss = mixer; 1353 snd_mixer_oss_build(mixer); 1354 snd_mixer_oss_proc_init(mixer); 1355 } else { 1356 mixer = card->mixer_oss; 1357 if (mixer == NULL) 1358 return 0; 1359 if (mixer->oss_dev_alloc) { 1360#ifdef SNDRV_OSS_INFO_DEV_MIXERS 1361 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number); 1362#endif 1363 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); 1364 mixer->oss_dev_alloc = 0; 1365 } 1366 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) 1367 return 0; 1368 snd_mixer_oss_proc_done(mixer); 1369 return snd_mixer_oss_free1(mixer); 1370 } 1371 return 0; 1372} 1373 1374static int __init alsa_mixer_oss_init(void) 1375{ 1376 int idx; 1377 1378 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler; 1379 for (idx = 0; idx < SNDRV_CARDS; idx++) { 1380 if (snd_cards[idx]) 1381 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER); 1382 } 1383 return 0; 1384} 1385 1386static void __exit alsa_mixer_oss_exit(void) 1387{ 1388 int idx; 1389 1390 snd_mixer_oss_notify_callback = NULL; 1391 for (idx = 0; idx < SNDRV_CARDS; idx++) { 1392 if (snd_cards[idx]) 1393 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE); 1394 } 1395} 1396 1397module_init(alsa_mixer_oss_init) 1398module_exit(alsa_mixer_oss_exit) 1399 1400EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); 1401