linux/sound/core/oss/mixer_oss.c
<<
>>
Prefs
   1/*
   2 *  OSS emulation layer for the mixer interface
   3 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   4 *
   5 *
   6 *   This program is free software; you can redistribute it and/or modify
   7 *   it under the terms of the GNU General Public License as published by
   8 *   the Free Software Foundation; either version 2 of the License, or
   9 *   (at your option) any later version.
  10 *
  11 *   This program is distributed in the hope that it will be useful,
  12 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *   GNU General Public License for more details.
  15 *
  16 *   You should have received a copy of the GNU General Public License
  17 *   along with this program; if not, write to the Free Software
  18 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 *
  20 */
  21
  22#include <linux/init.h>
  23#include <linux/slab.h>
  24#include <linux/time.h>
  25#include <linux/string.h>
  26#include <linux/module.h>
  27#include <sound/core.h>
  28#include <sound/minors.h>
  29#include <sound/control.h>
  30#include <sound/info.h>
  31#include <sound/mixer_oss.h>
  32#include <linux/soundcard.h>
  33
  34#define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
  35
  36MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  37MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
  38MODULE_LICENSE("GPL");
  39MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
  40
  41static int snd_mixer_oss_open(struct inode *inode, struct file *file)
  42{
  43        struct snd_card *card;
  44        struct snd_mixer_oss_file *fmixer;
  45        int err;
  46
  47        err = nonseekable_open(inode, file);
  48        if (err < 0)
  49                return err;
  50
  51        card = snd_lookup_oss_minor_data(iminor(inode),
  52                                         SNDRV_OSS_DEVICE_TYPE_MIXER);
  53        if (card == NULL)
  54                return -ENODEV;
  55        if (card->mixer_oss == NULL) {
  56                snd_card_unref(card);
  57                return -ENODEV;
  58        }
  59        err = snd_card_file_add(card, file);
  60        if (err < 0) {
  61                snd_card_unref(card);
  62                return err;
  63        }
  64        fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
  65        if (fmixer == NULL) {
  66                snd_card_file_remove(card, file);
  67                snd_card_unref(card);
  68                return -ENOMEM;
  69        }
  70        fmixer->card = card;
  71        fmixer->mixer = card->mixer_oss;
  72        file->private_data = fmixer;
  73        if (!try_module_get(card->module)) {
  74                kfree(fmixer);
  75                snd_card_file_remove(card, file);
  76                snd_card_unref(card);
  77                return -EFAULT;
  78        }
  79        snd_card_unref(card);
  80        return 0;
  81}
  82
  83static int snd_mixer_oss_release(struct inode *inode, struct file *file)
  84{
  85        struct snd_mixer_oss_file *fmixer;
  86
  87        if (file->private_data) {
  88                fmixer = file->private_data;
  89                module_put(fmixer->card->module);
  90                snd_card_file_remove(fmixer->card, file);
  91                kfree(fmixer);
  92        }
  93        return 0;
  94}
  95
  96static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
  97                              mixer_info __user *_info)
  98{
  99        struct snd_card *card = fmixer->card;
 100        struct snd_mixer_oss *mixer = fmixer->mixer;
 101        struct mixer_info info;
 102        
 103        memset(&info, 0, sizeof(info));
 104        strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 105        strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 106        info.modify_counter = card->mixer_oss_change_count;
 107        if (copy_to_user(_info, &info, sizeof(info)))
 108                return -EFAULT;
 109        return 0;
 110}
 111
 112static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
 113                                       _old_mixer_info __user *_info)
 114{
 115        struct snd_card *card = fmixer->card;
 116        struct snd_mixer_oss *mixer = fmixer->mixer;
 117        _old_mixer_info info;
 118        
 119        memset(&info, 0, sizeof(info));
 120        strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
 121        strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
 122        if (copy_to_user(_info, &info, sizeof(info)))
 123                return -EFAULT;
 124        return 0;
 125}
 126
 127static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
 128{
 129        struct snd_mixer_oss *mixer = fmixer->mixer;
 130        int result = 0;
 131
 132        if (mixer == NULL)
 133                return -EIO;
 134        if (mixer->get_recsrc && mixer->put_recsrc)
 135                result |= SOUND_CAP_EXCL_INPUT;
 136        return result;
 137}
 138
 139static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
 140{
 141        struct snd_mixer_oss *mixer = fmixer->mixer;
 142        struct snd_mixer_oss_slot *pslot;
 143        int result = 0, chn;
 144
 145        if (mixer == NULL)
 146                return -EIO;
 147        for (chn = 0; chn < 31; chn++) {
 148                pslot = &mixer->slots[chn];
 149                if (pslot->put_volume || pslot->put_recsrc)
 150                        result |= 1 << chn;
 151        }
 152        return result;
 153}
 154
 155static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
 156{
 157        struct snd_mixer_oss *mixer = fmixer->mixer;
 158        struct snd_mixer_oss_slot *pslot;
 159        int result = 0, chn;
 160
 161        if (mixer == NULL)
 162                return -EIO;
 163        for (chn = 0; chn < 31; chn++) {
 164                pslot = &mixer->slots[chn];
 165                if (pslot->put_volume && pslot->stereo)
 166                        result |= 1 << chn;
 167        }
 168        return result;
 169}
 170
 171static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
 172{
 173        struct snd_mixer_oss *mixer = fmixer->mixer;
 174        int result = 0;
 175
 176        if (mixer == NULL)
 177                return -EIO;
 178        if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 179                result = mixer->mask_recsrc;
 180        } else {
 181                struct snd_mixer_oss_slot *pslot;
 182                int chn;
 183                for (chn = 0; chn < 31; chn++) {
 184                        pslot = &mixer->slots[chn];
 185                        if (pslot->put_recsrc)
 186                                result |= 1 << chn;
 187                }
 188        }
 189        return result;
 190}
 191
 192static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
 193{
 194        struct snd_mixer_oss *mixer = fmixer->mixer;
 195        int result = 0;
 196
 197        if (mixer == NULL)
 198                return -EIO;
 199        if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
 200                int err;
 201                unsigned int index;
 202                if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
 203                        return err;
 204                result = 1 << index;
 205        } else {
 206                struct snd_mixer_oss_slot *pslot;
 207                int chn;
 208                for (chn = 0; chn < 31; chn++) {
 209                        pslot = &mixer->slots[chn];
 210                        if (pslot->get_recsrc) {
 211                                int active = 0;
 212                                pslot->get_recsrc(fmixer, pslot, &active);
 213                                if (active)
 214                                        result |= 1 << chn;
 215                        }
 216                }
 217        }
 218        return mixer->oss_recsrc = result;
 219}
 220
 221static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
 222{
 223        struct snd_mixer_oss *mixer = fmixer->mixer;
 224        struct snd_mixer_oss_slot *pslot;
 225        int chn, active;
 226        unsigned int index;
 227        int result = 0;
 228
 229        if (mixer == NULL)
 230                return -EIO;
 231        if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
 232                if (recsrc & ~mixer->oss_recsrc)
 233                        recsrc &= ~mixer->oss_recsrc;
 234                mixer->put_recsrc(fmixer, ffz(~recsrc));
 235                mixer->get_recsrc(fmixer, &index);
 236                result = 1 << index;
 237        }
 238        for (chn = 0; chn < 31; chn++) {
 239                pslot = &mixer->slots[chn];
 240                if (pslot->put_recsrc) {
 241                        active = (recsrc & (1 << chn)) ? 1 : 0;
 242                        pslot->put_recsrc(fmixer, pslot, active);
 243                }
 244        }
 245        if (! result) {
 246                for (chn = 0; chn < 31; chn++) {
 247                        pslot = &mixer->slots[chn];
 248                        if (pslot->get_recsrc) {
 249                                active = 0;
 250                                pslot->get_recsrc(fmixer, pslot, &active);
 251                                if (active)
 252                                        result |= 1 << chn;
 253                        }
 254                }
 255        }
 256        return result;
 257}
 258
 259static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
 260{
 261        struct snd_mixer_oss *mixer = fmixer->mixer;
 262        struct snd_mixer_oss_slot *pslot;
 263        int result = 0, left, right;
 264
 265        if (mixer == NULL || slot > 30)
 266                return -EIO;
 267        pslot = &mixer->slots[slot];
 268        left = pslot->volume[0];
 269        right = pslot->volume[1];
 270        if (pslot->get_volume)
 271                result = pslot->get_volume(fmixer, pslot, &left, &right);
 272        if (!pslot->stereo)
 273                right = left;
 274        if (snd_BUG_ON(left < 0 || left > 100))
 275                return -EIO;
 276        if (snd_BUG_ON(right < 0 || right > 100))
 277                return -EIO;
 278        if (result >= 0) {
 279                pslot->volume[0] = left;
 280                pslot->volume[1] = right;
 281                result = (left & 0xff) | ((right & 0xff) << 8);
 282        }
 283        return result;
 284}
 285
 286static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
 287                                    int slot, int volume)
 288{
 289        struct snd_mixer_oss *mixer = fmixer->mixer;
 290        struct snd_mixer_oss_slot *pslot;
 291        int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
 292
 293        if (mixer == NULL || slot > 30)
 294                return -EIO;
 295        pslot = &mixer->slots[slot];
 296        if (left > 100)
 297                left = 100;
 298        if (right > 100)
 299                right = 100;
 300        if (!pslot->stereo)
 301                right = left;
 302        if (pslot->put_volume)
 303                result = pslot->put_volume(fmixer, pslot, left, right);
 304        if (result < 0)
 305                return result;
 306        pslot->volume[0] = left;
 307        pslot->volume[1] = right;
 308        return (left & 0xff) | ((right & 0xff) << 8);
 309}
 310
 311static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
 312{
 313        void __user *argp = (void __user *)arg;
 314        int __user *p = argp;
 315        int tmp;
 316
 317        if (snd_BUG_ON(!fmixer))
 318                return -ENXIO;
 319        if (((cmd >> 8) & 0xff) == 'M') {
 320                switch (cmd) {
 321                case SOUND_MIXER_INFO:
 322                        return snd_mixer_oss_info(fmixer, argp);
 323                case SOUND_OLD_MIXER_INFO:
 324                        return snd_mixer_oss_info_obsolete(fmixer, argp);
 325                case SOUND_MIXER_WRITE_RECSRC:
 326                        if (get_user(tmp, p))
 327                                return -EFAULT;
 328                        tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
 329                        if (tmp < 0)
 330                                return tmp;
 331                        return put_user(tmp, p);
 332                case OSS_GETVERSION:
 333                        return put_user(SNDRV_OSS_VERSION, p);
 334                case OSS_ALSAEMULVER:
 335                        return put_user(1, p);
 336                case SOUND_MIXER_READ_DEVMASK:
 337                        tmp = snd_mixer_oss_devmask(fmixer);
 338                        if (tmp < 0)
 339                                return tmp;
 340                        return put_user(tmp, p);
 341                case SOUND_MIXER_READ_STEREODEVS:
 342                        tmp = snd_mixer_oss_stereodevs(fmixer);
 343                        if (tmp < 0)
 344                                return tmp;
 345                        return put_user(tmp, p);
 346                case SOUND_MIXER_READ_RECMASK:
 347                        tmp = snd_mixer_oss_recmask(fmixer);
 348                        if (tmp < 0)
 349                                return tmp;
 350                        return put_user(tmp, p);
 351                case SOUND_MIXER_READ_CAPS:
 352                        tmp = snd_mixer_oss_caps(fmixer);
 353                        if (tmp < 0)
 354                                return tmp;
 355                        return put_user(tmp, p);
 356                case SOUND_MIXER_READ_RECSRC:
 357                        tmp = snd_mixer_oss_get_recsrc(fmixer);
 358                        if (tmp < 0)
 359                                return tmp;
 360                        return put_user(tmp, p);
 361                }
 362        }
 363        if (cmd & SIOC_IN) {
 364                if (get_user(tmp, p))
 365                        return -EFAULT;
 366                tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
 367                if (tmp < 0)
 368                        return tmp;
 369                return put_user(tmp, p);
 370        } else if (cmd & SIOC_OUT) {
 371                tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
 372                if (tmp < 0)
 373                        return tmp;
 374                return put_user(tmp, p);
 375        }
 376        return -ENXIO;
 377}
 378
 379static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 380{
 381        return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
 382}
 383
 384int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
 385{
 386        struct snd_mixer_oss_file fmixer;
 387        
 388        if (snd_BUG_ON(!card))
 389                return -ENXIO;
 390        if (card->mixer_oss == NULL)
 391                return -ENXIO;
 392        memset(&fmixer, 0, sizeof(fmixer));
 393        fmixer.card = card;
 394        fmixer.mixer = card->mixer_oss;
 395        return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
 396}
 397
 398#ifdef CONFIG_COMPAT
 399/* all compatible */
 400#define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
 401#else
 402#define snd_mixer_oss_ioctl_compat      NULL
 403#endif
 404
 405/*
 406 *  REGISTRATION PART
 407 */
 408
 409static const struct file_operations snd_mixer_oss_f_ops =
 410{
 411        .owner =        THIS_MODULE,
 412        .open =         snd_mixer_oss_open,
 413        .release =      snd_mixer_oss_release,
 414        .llseek =       no_llseek,
 415        .unlocked_ioctl =       snd_mixer_oss_ioctl,
 416        .compat_ioctl = snd_mixer_oss_ioctl_compat,
 417};
 418
 419/*
 420 *  utilities
 421 */
 422
 423static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
 424{
 425        long orange = omax - omin, nrange = nmax - nmin;
 426        
 427        if (orange == 0)
 428                return 0;
 429        return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
 430}
 431
 432/* convert from alsa native to oss values (0-100) */
 433static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
 434{
 435        if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
 436                return *old;
 437        return snd_mixer_oss_conv(val, min, max, 0, 100);
 438}
 439
 440/* convert from oss to alsa native values */
 441static long snd_mixer_oss_conv2(long val, long min, long max)
 442{
 443        return snd_mixer_oss_conv(val, 0, 100, min, max);
 444}
 445
 446#if 0
 447static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
 448{
 449        struct snd_mixer_oss *mixer = card->mixer_oss;
 450        if (mixer)
 451                mixer->mask_recsrc |= 1 << slot;
 452}
 453
 454static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
 455{
 456        struct snd_mixer_oss *mixer = card->mixer_oss;
 457        if (mixer && (mixer->mask_recsrc & (1 << slot)))
 458                return 1;
 459        return 0;
 460}
 461#endif
 462
 463#define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
 464
 465#define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
 466#define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
 467#define SNDRV_MIXER_OSS_ITEM_GROUTE     2
 468#define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
 469#define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
 470#define SNDRV_MIXER_OSS_ITEM_PROUTE     5
 471#define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
 472#define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
 473#define SNDRV_MIXER_OSS_ITEM_CROUTE     8
 474#define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
 475#define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
 476
 477#define SNDRV_MIXER_OSS_ITEM_COUNT      11
 478
 479#define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
 480#define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
 481#define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
 482#define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
 483#define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
 484#define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
 485#define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
 486#define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
 487#define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
 488#define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
 489#define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
 490
 491struct slot {
 492        unsigned int signature;
 493        unsigned int present;
 494        unsigned int channels;
 495        unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
 496        unsigned int capture_item;
 497        struct snd_mixer_oss_assign_table *assigned;
 498        unsigned int allocated: 1;
 499};
 500
 501#define ID_UNKNOWN      ((unsigned int)-1)
 502
 503static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
 504{
 505        struct snd_card *card = mixer->card;
 506        struct snd_ctl_elem_id id;
 507        
 508        memset(&id, 0, sizeof(id));
 509        id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 510        strlcpy(id.name, name, sizeof(id.name));
 511        id.index = index;
 512        return snd_ctl_find_id(card, &id);
 513}
 514
 515static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
 516                                          struct snd_mixer_oss_slot *pslot,
 517                                          unsigned int numid,
 518                                          int *left, int *right)
 519{
 520        struct snd_ctl_elem_info *uinfo;
 521        struct snd_ctl_elem_value *uctl;
 522        struct snd_kcontrol *kctl;
 523        struct snd_card *card = fmixer->card;
 524
 525        if (numid == ID_UNKNOWN)
 526                return;
 527        down_read(&card->controls_rwsem);
 528        if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 529                up_read(&card->controls_rwsem);
 530                return;
 531        }
 532        uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 533        uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 534        if (uinfo == NULL || uctl == NULL)
 535                goto __unalloc;
 536        if (kctl->info(kctl, uinfo))
 537                goto __unalloc;
 538        if (kctl->get(kctl, uctl))
 539                goto __unalloc;
 540        if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 541            uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 542                goto __unalloc;
 543        *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
 544        if (uinfo->count > 1)
 545                *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
 546      __unalloc:
 547        up_read(&card->controls_rwsem);
 548        kfree(uctl);
 549        kfree(uinfo);
 550}
 551
 552static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
 553                                         struct snd_mixer_oss_slot *pslot,
 554                                         unsigned int numid,
 555                                         int *left, int *right,
 556                                         int route)
 557{
 558        struct snd_ctl_elem_info *uinfo;
 559        struct snd_ctl_elem_value *uctl;
 560        struct snd_kcontrol *kctl;
 561        struct snd_card *card = fmixer->card;
 562
 563        if (numid == ID_UNKNOWN)
 564                return;
 565        down_read(&card->controls_rwsem);
 566        if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 567                up_read(&card->controls_rwsem);
 568                return;
 569        }
 570        uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 571        uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 572        if (uinfo == NULL || uctl == NULL)
 573                goto __unalloc;
 574        if (kctl->info(kctl, uinfo))
 575                goto __unalloc;
 576        if (kctl->get(kctl, uctl))
 577                goto __unalloc;
 578        if (!uctl->value.integer.value[0]) {
 579                *left = 0;
 580                if (uinfo->count == 1)
 581                        *right = 0;
 582        }
 583        if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
 584                *right = 0;
 585      __unalloc:
 586        up_read(&card->controls_rwsem);
 587        kfree(uctl);
 588        kfree(uinfo);
 589}
 590
 591static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 592                                     struct snd_mixer_oss_slot *pslot,
 593                                     int *left, int *right)
 594{
 595        struct slot *slot = pslot->private_data;
 596        
 597        *left = *right = 100;
 598        if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 599                snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 600        } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 601                snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 602        } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 603                snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 604        }
 605        if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 606                snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 607        } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 608                snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 609        } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 610                snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 611        } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 612                snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 613        }
 614        return 0;
 615}
 616
 617static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
 618                                          struct snd_mixer_oss_slot *pslot,
 619                                          unsigned int numid,
 620                                          int left, int right)
 621{
 622        struct snd_ctl_elem_info *uinfo;
 623        struct snd_ctl_elem_value *uctl;
 624        struct snd_kcontrol *kctl;
 625        struct snd_card *card = fmixer->card;
 626        int res;
 627
 628        if (numid == ID_UNKNOWN)
 629                return;
 630        down_read(&card->controls_rwsem);
 631        if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 632                up_read(&card->controls_rwsem);
 633                return;
 634        }
 635        uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 636        uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 637        if (uinfo == NULL || uctl == NULL)
 638                goto __unalloc;
 639        if (kctl->info(kctl, uinfo))
 640                goto __unalloc;
 641        if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
 642            uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
 643                goto __unalloc;
 644        uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
 645        if (uinfo->count > 1)
 646                uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
 647        if ((res = kctl->put(kctl, uctl)) < 0)
 648                goto __unalloc;
 649        if (res > 0)
 650                snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 651      __unalloc:
 652        up_read(&card->controls_rwsem);
 653        kfree(uctl);
 654        kfree(uinfo);
 655}
 656
 657static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
 658                                         struct snd_mixer_oss_slot *pslot,
 659                                         unsigned int numid,
 660                                         int left, int right,
 661                                         int route)
 662{
 663        struct snd_ctl_elem_info *uinfo;
 664        struct snd_ctl_elem_value *uctl;
 665        struct snd_kcontrol *kctl;
 666        struct snd_card *card = fmixer->card;
 667        int res;
 668
 669        if (numid == ID_UNKNOWN)
 670                return;
 671        down_read(&card->controls_rwsem);
 672        if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
 673                up_read(&card->controls_rwsem);
 674                return;
 675        }
 676        uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 677        uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 678        if (uinfo == NULL || uctl == NULL)
 679                goto __unalloc;
 680        if (kctl->info(kctl, uinfo))
 681                goto __unalloc;
 682        if (uinfo->count > 1) {
 683                uctl->value.integer.value[0] = left > 0 ? 1 : 0;
 684                uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
 685                if (route) {
 686                        uctl->value.integer.value[1] =
 687                        uctl->value.integer.value[2] = 0;
 688                }
 689        } else {
 690                uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
 691        }
 692        if ((res = kctl->put(kctl, uctl)) < 0)
 693                goto __unalloc;
 694        if (res > 0)
 695                snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 696      __unalloc:
 697        up_read(&card->controls_rwsem);
 698        kfree(uctl);
 699        kfree(uinfo);
 700}
 701
 702static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 703                                     struct snd_mixer_oss_slot *pslot,
 704                                     int left, int right)
 705{
 706        struct slot *slot = pslot->private_data;
 707        
 708        if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 709                snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
 710                if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
 711                        snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 712        } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
 713                snd_mixer_oss_put_volume1_vol(fmixer, pslot,
 714                        slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
 715        } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
 716                snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
 717        } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
 718                snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
 719        }
 720        if (left || right) {
 721                if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
 722                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 723                if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
 724                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 725                if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
 726                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 727                if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
 728                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 729                if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
 730                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 731                if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
 732                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 733        } else {
 734                if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
 735                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
 736                } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
 737                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
 738                } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
 739                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
 740                } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
 741                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
 742                } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
 743                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
 744                } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
 745                        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
 746                }
 747        }
 748        return 0;
 749}
 750
 751static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 752                                        struct snd_mixer_oss_slot *pslot,
 753                                        int *active)
 754{
 755        struct slot *slot = pslot->private_data;
 756        int left, right;
 757        
 758        left = right = 1;
 759        snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
 760        *active = (left || right) ? 1 : 0;
 761        return 0;
 762}
 763
 764static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 765                                           struct snd_mixer_oss_slot *pslot,
 766                                           int *active)
 767{
 768        struct slot *slot = pslot->private_data;
 769        int left, right;
 770        
 771        left = right = 1;
 772        snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
 773        *active = (left || right) ? 1 : 0;
 774        return 0;
 775}
 776
 777static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 778                                        struct snd_mixer_oss_slot *pslot,
 779                                        int active)
 780{
 781        struct slot *slot = pslot->private_data;
 782        
 783        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 784        return 0;
 785}
 786
 787static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 788                                           struct snd_mixer_oss_slot *pslot,
 789                                           int active)
 790{
 791        struct slot *slot = pslot->private_data;
 792        
 793        snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 794        return 0;
 795}
 796
 797static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
 798{
 799        struct snd_card *card = fmixer->card;
 800        struct snd_mixer_oss *mixer = fmixer->mixer;
 801        struct snd_kcontrol *kctl;
 802        struct snd_mixer_oss_slot *pslot;
 803        struct slot *slot;
 804        struct snd_ctl_elem_info *uinfo;
 805        struct snd_ctl_elem_value *uctl;
 806        int err, idx;
 807        
 808        uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 809        uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 810        if (uinfo == NULL || uctl == NULL) {
 811                err = -ENOMEM;
 812                goto __free_only;
 813        }
 814        down_read(&card->controls_rwsem);
 815        kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 816        if (! kctl) {
 817                err = -ENOENT;
 818                goto __unlock;
 819        }
 820        if ((err = kctl->info(kctl, uinfo)) < 0)
 821                goto __unlock;
 822        if ((err = kctl->get(kctl, uctl)) < 0)
 823                goto __unlock;
 824        for (idx = 0; idx < 32; idx++) {
 825                if (!(mixer->mask_recsrc & (1 << idx)))
 826                        continue;
 827                pslot = &mixer->slots[idx];
 828                slot = pslot->private_data;
 829                if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 830                        continue;
 831                if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 832                        continue;
 833                if (slot->capture_item == uctl->value.enumerated.item[0]) {
 834                        *active_index = idx;
 835                        break;
 836                }
 837        }
 838        err = 0;
 839      __unlock:
 840        up_read(&card->controls_rwsem);
 841      __free_only:
 842        kfree(uctl);
 843        kfree(uinfo);
 844        return err;
 845}
 846
 847static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
 848{
 849        struct snd_card *card = fmixer->card;
 850        struct snd_mixer_oss *mixer = fmixer->mixer;
 851        struct snd_kcontrol *kctl;
 852        struct snd_mixer_oss_slot *pslot;
 853        struct slot *slot = NULL;
 854        struct snd_ctl_elem_info *uinfo;
 855        struct snd_ctl_elem_value *uctl;
 856        int err;
 857        unsigned int idx;
 858
 859        uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
 860        uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
 861        if (uinfo == NULL || uctl == NULL) {
 862                err = -ENOMEM;
 863                goto __free_only;
 864        }
 865        down_read(&card->controls_rwsem);
 866        kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 867        if (! kctl) {
 868                err = -ENOENT;
 869                goto __unlock;
 870        }
 871        if ((err = kctl->info(kctl, uinfo)) < 0)
 872                goto __unlock;
 873        for (idx = 0; idx < 32; idx++) {
 874                if (!(mixer->mask_recsrc & (1 << idx)))
 875                        continue;
 876                pslot = &mixer->slots[idx];
 877                slot = pslot->private_data;
 878                if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 879                        continue;
 880                if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
 881                        continue;
 882                if (idx == active_index)
 883                        break;
 884                slot = NULL;
 885        }
 886        if (! slot)
 887                goto __unlock;
 888        for (idx = 0; idx < uinfo->count; idx++)
 889                uctl->value.enumerated.item[idx] = slot->capture_item;
 890        err = kctl->put(kctl, uctl);
 891        if (err > 0)
 892                snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
 893        err = 0;
 894      __unlock:
 895        up_read(&card->controls_rwsem);
 896      __free_only:
 897        kfree(uctl);
 898        kfree(uinfo);
 899        return err;
 900}
 901
 902struct snd_mixer_oss_assign_table {
 903        int oss_id;
 904        const char *name;
 905        int index;
 906};
 907
 908static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
 909{
 910        struct snd_ctl_elem_info *info;
 911        struct snd_kcontrol *kcontrol;
 912        struct snd_card *card = mixer->card;
 913        int err;
 914
 915        down_read(&card->controls_rwsem);
 916        kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 917        if (kcontrol == NULL) {
 918                up_read(&card->controls_rwsem);
 919                return 0;
 920        }
 921        info = kmalloc(sizeof(*info), GFP_KERNEL);
 922        if (! info) {
 923                up_read(&card->controls_rwsem);
 924                return -ENOMEM;
 925        }
 926        if ((err = kcontrol->info(kcontrol, info)) < 0) {
 927                up_read(&card->controls_rwsem);
 928                kfree(info);
 929                return err;
 930        }
 931        slot->numid[item] = kcontrol->id.numid;
 932        up_read(&card->controls_rwsem);
 933        if (info->count > slot->channels)
 934                slot->channels = info->count;
 935        slot->present |= 1 << item;
 936        kfree(info);
 937        return 0;
 938}
 939
 940static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 941{
 942        struct slot *p = chn->private_data;
 943        if (p) {
 944                if (p->allocated && p->assigned) {
 945                        kfree(p->assigned->name);
 946                        kfree(p->assigned);
 947                }
 948                kfree(p);
 949        }
 950}
 951
 952static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
 953{
 954        int idx = rslot->number; /* remember this */
 955        if (rslot->private_free)
 956                rslot->private_free(rslot);
 957        memset(rslot, 0, sizeof(*rslot));
 958        rslot->number = idx;
 959}
 960
 961/* In a separate function to keep gcc 3.2 happy - do NOT merge this in
 962   snd_mixer_oss_build_input! */
 963static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
 964                                        struct snd_mixer_oss_assign_table *ptr,
 965                                        struct slot *slot)
 966{
 967        char str[64];
 968        int err;
 969
 970        err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
 971                                       SNDRV_MIXER_OSS_ITEM_GLOBAL);
 972        if (err)
 973                return err;
 974        sprintf(str, "%s Switch", ptr->name);
 975        err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 976                                       SNDRV_MIXER_OSS_ITEM_GSWITCH);
 977        if (err)
 978                return err;
 979        sprintf(str, "%s Route", ptr->name);
 980        err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 981                                       SNDRV_MIXER_OSS_ITEM_GROUTE);
 982        if (err)
 983                return err;
 984        sprintf(str, "%s Volume", ptr->name);
 985        err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 986                                       SNDRV_MIXER_OSS_ITEM_GVOLUME);
 987        if (err)
 988                return err;
 989        sprintf(str, "%s Playback Switch", ptr->name);
 990        err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 991                                       SNDRV_MIXER_OSS_ITEM_PSWITCH);
 992        if (err)
 993                return err;
 994        sprintf(str, "%s Playback Route", ptr->name);
 995        err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
 996                                       SNDRV_MIXER_OSS_ITEM_PROUTE);
 997        if (err)
 998                return err;
 999        sprintf(str, "%s Playback Volume", ptr->name);
1000        err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1001                                       SNDRV_MIXER_OSS_ITEM_PVOLUME);
1002        if (err)
1003                return err;
1004        sprintf(str, "%s Capture Switch", ptr->name);
1005        err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1006                                       SNDRV_MIXER_OSS_ITEM_CSWITCH);
1007        if (err)
1008                return err;
1009        sprintf(str, "%s Capture Route", ptr->name);
1010        err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1011                                       SNDRV_MIXER_OSS_ITEM_CROUTE);
1012        if (err)
1013                return err;
1014        sprintf(str, "%s Capture Volume", ptr->name);
1015        err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1016                                       SNDRV_MIXER_OSS_ITEM_CVOLUME);
1017        if (err)
1018                return err;
1019
1020        return 0;
1021}
1022
1023/*
1024 * build an OSS mixer element.
1025 * ptr_allocated means the entry is dynamically allocated (change via proc file).
1026 * when replace_old = 1, the old entry is replaced with the new one.
1027 */
1028static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
1029{
1030        struct slot slot;
1031        struct slot *pslot;
1032        struct snd_kcontrol *kctl;
1033        struct snd_mixer_oss_slot *rslot;
1034        char str[64];   
1035        
1036        /* check if already assigned */
1037        if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1038                return 0;
1039
1040        memset(&slot, 0, sizeof(slot));
1041        memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1042        if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1043                return 0;
1044        down_read(&mixer->card->controls_rwsem);
1045        if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1046                struct snd_ctl_elem_info *uinfo;
1047
1048                uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1049                if (! uinfo) {
1050                        up_read(&mixer->card->controls_rwsem);
1051                        return -ENOMEM;
1052                }
1053                        
1054                if (kctl->info(kctl, uinfo)) {
1055                        up_read(&mixer->card->controls_rwsem);
1056                        kfree(uinfo);
1057                        return 0;
1058                }
1059                strcpy(str, ptr->name);
1060                if (!strcmp(str, "Master"))
1061                        strcpy(str, "Mix");
1062                if (!strcmp(str, "Master Mono"))
1063                        strcpy(str, "Mix Mono");
1064                slot.capture_item = 0;
1065                if (!strcmp(uinfo->value.enumerated.name, str)) {
1066                        slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1067                } else {
1068                        for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1069                                uinfo->value.enumerated.item = slot.capture_item;
1070                                if (kctl->info(kctl, uinfo)) {
1071                                        up_read(&mixer->card->controls_rwsem);
1072                                        kfree(uinfo);
1073                                        return 0;
1074                                }
1075                                if (!strcmp(uinfo->value.enumerated.name, str)) {
1076                                        slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1077                                        break;
1078                                }
1079                        }
1080                }
1081                kfree(uinfo);
1082        }
1083        up_read(&mixer->card->controls_rwsem);
1084        if (slot.present != 0) {
1085                pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1086                if (! pslot)
1087                        return -ENOMEM;
1088                *pslot = slot;
1089                pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1090                pslot->assigned = ptr;
1091                pslot->allocated = ptr_allocated;
1092                rslot = &mixer->slots[ptr->oss_id];
1093                mixer_slot_clear(rslot);
1094                rslot->stereo = slot.channels > 1 ? 1 : 0;
1095                rslot->get_volume = snd_mixer_oss_get_volume1;
1096                rslot->put_volume = snd_mixer_oss_put_volume1;
1097                /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1098                if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1099                        rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1100                        rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1101                } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1102                        rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1103                        rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1104                } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1105                        mixer->mask_recsrc |= 1 << ptr->oss_id;
1106                }
1107                rslot->private_data = pslot;
1108                rslot->private_free = snd_mixer_oss_slot_free;
1109                return 1;
1110        }
1111        return 0;
1112}
1113
1114#ifdef CONFIG_PROC_FS
1115/*
1116 */
1117#define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1118static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1119        MIXER_VOL(VOLUME),
1120        MIXER_VOL(BASS),
1121        MIXER_VOL(TREBLE),
1122        MIXER_VOL(SYNTH),
1123        MIXER_VOL(PCM),
1124        MIXER_VOL(SPEAKER),
1125        MIXER_VOL(LINE),
1126        MIXER_VOL(MIC),
1127        MIXER_VOL(CD),
1128        MIXER_VOL(IMIX),
1129        MIXER_VOL(ALTPCM),
1130        MIXER_VOL(RECLEV),
1131        MIXER_VOL(IGAIN),
1132        MIXER_VOL(OGAIN),
1133        MIXER_VOL(LINE1),
1134        MIXER_VOL(LINE2),
1135        MIXER_VOL(LINE3),
1136        MIXER_VOL(DIGITAL1),
1137        MIXER_VOL(DIGITAL2),
1138        MIXER_VOL(DIGITAL3),
1139        MIXER_VOL(PHONEIN),
1140        MIXER_VOL(PHONEOUT),
1141        MIXER_VOL(VIDEO),
1142        MIXER_VOL(RADIO),
1143        MIXER_VOL(MONITOR),
1144};
1145        
1146/*
1147 *  /proc interface
1148 */
1149
1150static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1151                                    struct snd_info_buffer *buffer)
1152{
1153        struct snd_mixer_oss *mixer = entry->private_data;
1154        int i;
1155
1156        mutex_lock(&mixer->reg_mutex);
1157        for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1158                struct slot *p;
1159
1160                if (! oss_mixer_names[i])
1161                        continue;
1162                p = (struct slot *)mixer->slots[i].private_data;
1163                snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1164                if (p && p->assigned)
1165                        snd_iprintf(buffer, "\"%s\" %d\n",
1166                                    p->assigned->name,
1167                                    p->assigned->index);
1168                else
1169                        snd_iprintf(buffer, "\"\" 0\n");
1170        }
1171        mutex_unlock(&mixer->reg_mutex);
1172}
1173
1174static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1175                                     struct snd_info_buffer *buffer)
1176{
1177        struct snd_mixer_oss *mixer = entry->private_data;
1178        char line[128], str[32], idxstr[16];
1179        const char *cptr;
1180        int ch, idx;
1181        struct snd_mixer_oss_assign_table *tbl;
1182        struct slot *slot;
1183
1184        while (!snd_info_get_line(buffer, line, sizeof(line))) {
1185                cptr = snd_info_get_str(str, line, sizeof(str));
1186                for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1187                        if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1188                                break;
1189                if (ch >= SNDRV_OSS_MAX_MIXERS) {
1190                        snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1191                        continue;
1192                }
1193                cptr = snd_info_get_str(str, cptr, sizeof(str));
1194                if (! *str) {
1195                        /* remove the entry */
1196                        mutex_lock(&mixer->reg_mutex);
1197                        mixer_slot_clear(&mixer->slots[ch]);
1198                        mutex_unlock(&mixer->reg_mutex);
1199                        continue;
1200                }
1201                snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1202                idx = simple_strtoul(idxstr, NULL, 10);
1203                if (idx >= 0x4000) { /* too big */
1204                        snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1205                        continue;
1206                }
1207                mutex_lock(&mixer->reg_mutex);
1208                slot = (struct slot *)mixer->slots[ch].private_data;
1209                if (slot && slot->assigned &&
1210                    slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1211                        /* not changed */
1212                        goto __unlock;
1213                tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1214                if (! tbl) {
1215                        snd_printk(KERN_ERR "mixer_oss: no memory\n");
1216                        goto __unlock;
1217                }
1218                tbl->oss_id = ch;
1219                tbl->name = kstrdup(str, GFP_KERNEL);
1220                if (! tbl->name) {
1221                        kfree(tbl);
1222                        goto __unlock;
1223                }
1224                tbl->index = idx;
1225                if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1226                        kfree(tbl->name);
1227                        kfree(tbl);
1228                }
1229        __unlock:
1230                mutex_unlock(&mixer->reg_mutex);
1231        }
1232}
1233
1234static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1235{
1236        struct snd_info_entry *entry;
1237
1238        entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1239                                           mixer->card->proc_root);
1240        if (! entry)
1241                return;
1242        entry->content = SNDRV_INFO_CONTENT_TEXT;
1243        entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1244        entry->c.text.read = snd_mixer_oss_proc_read;
1245        entry->c.text.write = snd_mixer_oss_proc_write;
1246        entry->private_data = mixer;
1247        if (snd_info_register(entry) < 0) {
1248                snd_info_free_entry(entry);
1249                entry = NULL;
1250        }
1251        mixer->proc_entry = entry;
1252}
1253
1254static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1255{
1256        snd_info_free_entry(mixer->proc_entry);
1257        mixer->proc_entry = NULL;
1258}
1259#else /* !CONFIG_PROC_FS */
1260#define snd_mixer_oss_proc_init(mix)
1261#define snd_mixer_oss_proc_done(mix)
1262#endif /* CONFIG_PROC_FS */
1263
1264static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1265{
1266        static struct snd_mixer_oss_assign_table table[] = {
1267                { SOUND_MIXER_VOLUME,   "Master",               0 },
1268                { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1269                { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1270                { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1271                { SOUND_MIXER_SYNTH,    "Synth",                0 },
1272                { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1273                { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1274                { SOUND_MIXER_PCM,      "PCM",                  0 },
1275                { SOUND_MIXER_SPEAKER,  "Beep",                 0 },
1276                { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 }, /* fallback */
1277                { SOUND_MIXER_SPEAKER,  "Speaker",              0 }, /* fallback */
1278                { SOUND_MIXER_LINE,     "Line",                 0 },
1279                { SOUND_MIXER_MIC,      "Mic",                  0 },
1280                { SOUND_MIXER_CD,       "CD",                   0 },
1281                { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1282                { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1283                { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1284                { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1285                { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1286                { SOUND_MIXER_IGAIN,    "Capture",              0 },
1287                { SOUND_MIXER_OGAIN,    "Playback",             0 },
1288                { SOUND_MIXER_LINE1,    "Aux",                  0 },
1289                { SOUND_MIXER_LINE2,    "Aux",                  1 },
1290                { SOUND_MIXER_LINE3,    "Aux",                  2 },
1291                { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1292                { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1293                { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1294                { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1295                { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1296                { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1297                { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1298                { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1299                { SOUND_MIXER_PHONEOUT, "Speaker",              0 }, /*fallback*/
1300                { SOUND_MIXER_PHONEOUT, "Mono",                 0 }, /*fallback*/
1301                { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1302                { SOUND_MIXER_VIDEO,    "Video",                0 },
1303                { SOUND_MIXER_RADIO,    "Radio",                0 },
1304                { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1305        };
1306        unsigned int idx;
1307        
1308        for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1309                snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1310        if (mixer->mask_recsrc) {
1311                mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1312                mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1313        }
1314}
1315
1316/*
1317 *
1318 */
1319
1320static int snd_mixer_oss_free1(void *private)
1321{
1322        struct snd_mixer_oss *mixer = private;
1323        struct snd_card *card;
1324        int idx;
1325 
1326        if (!mixer)
1327                return 0;
1328        card = mixer->card;
1329        if (snd_BUG_ON(mixer != card->mixer_oss))
1330                return -ENXIO;
1331        card->mixer_oss = NULL;
1332        for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1333                struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1334                if (chn->private_free)
1335                        chn->private_free(chn);
1336        }
1337        kfree(mixer);
1338        return 0;
1339}
1340
1341static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1342{
1343        struct snd_mixer_oss *mixer;
1344
1345        if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1346                char name[128];
1347                int idx, err;
1348
1349                mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1350                if (mixer == NULL)
1351                        return -ENOMEM;
1352                mutex_init(&mixer->reg_mutex);
1353                sprintf(name, "mixer%i%i", card->number, 0);
1354                if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1355                                                   card, 0,
1356                                                   &snd_mixer_oss_f_ops, card,
1357                                                   name)) < 0) {
1358                        snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1359                                   card->number, 0);
1360                        kfree(mixer);
1361                        return err;
1362                }
1363                mixer->oss_dev_alloc = 1;
1364                mixer->card = card;
1365                if (*card->mixername)
1366                        strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1367                else
1368                        strlcpy(mixer->name, name, sizeof(mixer->name));
1369#ifdef SNDRV_OSS_INFO_DEV_MIXERS
1370                snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1371                                      card->number,
1372                                      mixer->name);
1373#endif
1374                for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1375                        mixer->slots[idx].number = idx;
1376                card->mixer_oss = mixer;
1377                snd_mixer_oss_build(mixer);
1378                snd_mixer_oss_proc_init(mixer);
1379        } else {
1380                mixer = card->mixer_oss;
1381                if (mixer == NULL)
1382                        return 0;
1383                if (mixer->oss_dev_alloc) {
1384#ifdef SNDRV_OSS_INFO_DEV_MIXERS
1385                        snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1386#endif
1387                        snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1388                        mixer->oss_dev_alloc = 0;
1389                }
1390                if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1391                        return 0;
1392                snd_mixer_oss_proc_done(mixer);
1393                return snd_mixer_oss_free1(mixer);
1394        }
1395        return 0;
1396}
1397
1398static int __init alsa_mixer_oss_init(void)
1399{
1400        int idx;
1401        
1402        snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1403        for (idx = 0; idx < SNDRV_CARDS; idx++) {
1404                if (snd_cards[idx])
1405                        snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1406        }
1407        return 0;
1408}
1409
1410static void __exit alsa_mixer_oss_exit(void)
1411{
1412        int idx;
1413
1414        snd_mixer_oss_notify_callback = NULL;
1415        for (idx = 0; idx < SNDRV_CARDS; idx++) {
1416                if (snd_cards[idx])
1417                        snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1418        }
1419}
1420
1421module_init(alsa_mixer_oss_init)
1422module_exit(alsa_mixer_oss_exit)
1423
1424EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
1425