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   1 /*
   2  * Stuff used by all variants of the driver
   3  *
   4  * Copyright (c) 2001 by Stefan Eilers (Eilers.Stefan@epost.de),
   5  *                       Hansjoerg Lipp (hjlipp@web.de),
   6  *                       Tilman Schmidt (tilman@imap.cc).
   7  *
   8  * =====================================================================
   9  *      This program is free software; you can redistribute it and/or
  10  *      modify it under the terms of the GNU General Public License as
  11  *      published by the Free Software Foundation; either version 2 of
  12  *      the License, or (at your option) any later version.
  13  * =====================================================================
  14  */
  15
  16 #include "gigaset.h"
  17
  18 /* == Handling of I4L IO ============================================================================*/
  19
  20 /* writebuf_from_LL
  21  * called by LL to transmit data on an open channel
  22  * inserts the buffer data into the send queue and starts the transmission
  23  * Note that this operation must not sleep!
  24  * When the buffer is processed completely, gigaset_skb_sent() should be called.
  25  * parameters:
  26  *      driverID        driver ID as assigned by LL
  27  *      channel         channel number
  28  *      ack             if != 0 LL wants to be notified on completion via
  29  *                      statcallb(ISDN_STAT_BSENT)
  30  *      skb             skb containing data to send
  31  * return value:
  32  *      number of accepted bytes
  33  *      0 if temporarily unable to accept data (out of buffer space)
  34  *      <0 on error (eg. -EINVAL)
  35  */
  36 static int writebuf_from_LL(int driverID, int channel, int ack, struct sk_buff *skb)
  37 {
  38         struct cardstate *cs;
  39         struct bc_state *bcs;
  40         unsigned len;
  41         unsigned skblen;
  42
  43         if (!(cs = gigaset_get_cs_by_id(driverID))) {
  44                 err("%s: invalid driver ID (%d)", __func__, driverID);
  45                 return -ENODEV;
  46         }
  47         if (channel < 0 || channel >= cs->channels) {
  48                 err("%s: invalid channel ID (%d)", __func__, channel);
  49                 return -ENODEV;
  50         }
  51         bcs = &cs->bcs[channel];
  52         len = skb->len;
  53
  54         dbg(DEBUG_LLDATA,
  55             "Receiving data from LL (id: %d, channel: %d, ack: %d, size: %d)",
  56             driverID, channel, ack, len);
  57
  58         if (!len) {
  59                 if (ack)
  60                         warn("not ACKing empty packet from LL");
  61                 return 0;
  62         }
  63         if (len > MAX_BUF_SIZE) {
  64                 err("%s: packet too large (%d bytes)", __func__, channel);
  65                 return -EINVAL;
  66         }
  67
  68         if (!atomic_read(&cs->connected))
  69                 return -ENODEV;
  70
  71         skblen = ack ? len : 0;
  72         skb->head[0] = skblen & 0xff;
  73         skb->head[1] = skblen >> 8;
  74         dbg(DEBUG_MCMD, "skb: len=%u, skblen=%u: %02x %02x", len, skblen,
  75              (unsigned) skb->head[0], (unsigned) skb->head[1]);
  76
  77         /* pass to device-specific module */
  78         return cs->ops->send_skb(bcs, skb);
  79 }
  80
  81 void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb)
  82 {
  83         unsigned len;
  84         isdn_ctrl response;
  85
  86         ++bcs->trans_up;
  87
  88         if (skb->len)
  89                 warn("%s: skb->len==%d", __func__, skb->len);
  90
  91         len = (unsigned char) skb->head[0] |
  92               (unsigned) (unsigned char) skb->head[1] << 8;
  93         if (len) {
  94                 dbg(DEBUG_MCMD,
  95                     "Acknowledge sending to LL (id: %d, channel: %d size: %u)",
  96                     bcs->cs->myid, bcs->channel, len);
  97
  98                 response.driver = bcs->cs->myid;
  99                 response.command = ISDN_STAT_BSENT;
 100                 response.arg = bcs->channel;
 101                 response.parm.length = len;
 102                 bcs->cs->iif.statcallb(&response);
 103         }
 104 }
 105 EXPORT_SYMBOL_GPL(gigaset_skb_sent);
 106
 107 /* This function will be called by LL to send commands
 108  * NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL,
 109  * so don't put too much effort into it.
 110  */
 111 static int command_from_LL(isdn_ctrl *cntrl)
 112 {
 113         struct cardstate *cs = gigaset_get_cs_by_id(cntrl->driver);
 114         //isdn_ctrl response;
 115         //unsigned long flags;
 116         struct bc_state *bcs;
 117         int retval = 0;
 118         struct setup_parm *sp;
 119
 120         //dbg(DEBUG_ANY, "Gigaset_HW: Receiving command");
 121         gigaset_debugdrivers();
 122
 123         //FIXME "remove test for &connected"
 124         if ((!cs || !atomic_read(&cs->connected))) {
 125                 warn("LL tried to access unknown device with nr. %d",
 126                      cntrl->driver);
 127                 return -ENODEV;
 128         }
 129
 130         switch (cntrl->command) {
 131         case ISDN_CMD_IOCTL:
 132
 133                 dbg(DEBUG_ANY, "ISDN_CMD_IOCTL (driver:%d,arg: %ld)",
 134                     cntrl->driver, cntrl->arg);
 135
 136                 warn("ISDN_CMD_IOCTL is not supported.");
 137                 return -EINVAL;
 138
 139         case ISDN_CMD_DIAL:
 140                 dbg(DEBUG_ANY, "ISDN_CMD_DIAL (driver: %d, channel: %ld, "
 141                     "phone: %s,ownmsn: %s, si1: %d, si2: %d)",
 142                     cntrl->driver, cntrl->arg,
 143                     cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn,
 144                     cntrl->parm.setup.si1, cntrl->parm.setup.si2);
 145
 146                 if (cntrl->arg >= cs->channels) {
 147                         err("invalid channel (%d)", (int) cntrl->arg);
 148                         return -EINVAL;
 149                 }
 150
 151                 bcs = cs->bcs + cntrl->arg;
 152
 153                 if (!gigaset_get_channel(bcs)) {
 154                         err("channel not free");
 155                         return -EBUSY;
 156                 }
 157
 158                 sp = kmalloc(sizeof *sp, GFP_ATOMIC);
 159                 if (!sp) {
 160                         gigaset_free_channel(bcs);
 161                         err("ISDN_CMD_DIAL: out of memory");
 162                         return -ENOMEM;
 163                 }
 164                 *sp = cntrl->parm.setup;
 165
 166                 if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp,
 167                                        atomic_read(&bcs->at_state.seq_index),
 168                                        NULL)) {
 169                         //FIXME what should we do?
 170                         kfree(sp);
 171                         gigaset_free_channel(bcs);
 172                         return -ENOMEM;
 173                 }
 174
 175                 dbg(DEBUG_CMD, "scheduling DIAL");
 176                 gigaset_schedule_event(cs);
 177                 break;
 178         case ISDN_CMD_ACCEPTD: //FIXME
 179                 dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTD");
 180
 181                 if (cntrl->arg >= cs->channels) {
 182                         err("invalid channel (%d)", (int) cntrl->arg);
 183                         return -EINVAL;
 184                 }
 185
 186                 if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
 187                                        EV_ACCEPT, NULL, 0, NULL)) {
 188                         //FIXME what should we do?
 189                         return -ENOMEM;
 190                 }
 191
 192                 dbg(DEBUG_CMD, "scheduling ACCEPT");
 193                 gigaset_schedule_event(cs);
 194
 195                 break;
 196         case ISDN_CMD_ACCEPTB:
 197                 dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTB");
 198                 break;
 199         case ISDN_CMD_HANGUP:
 200                 dbg(DEBUG_ANY,
 201                     "ISDN_CMD_HANGUP (channel: %d)", (int) cntrl->arg);
 202
 203                 if (cntrl->arg >= cs->channels) {
 204                         err("ISDN_CMD_HANGUP: invalid channel (%u)",
 205                             (unsigned) cntrl->arg);
 206                         return -EINVAL;
 207                 }
 208
 209                 if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
 210                                        EV_HUP, NULL, 0, NULL)) {
 211                         //FIXME what should we do?
 212                         return -ENOMEM;
 213                 }
 214
 215                 dbg(DEBUG_CMD, "scheduling HUP");
 216                 gigaset_schedule_event(cs);
 217
 218                 break;
 219         case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ //FIXME
 220                 dbg(DEBUG_ANY, "ISDN_CMD_CLREAZ");
 221                 break;
 222         case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ //FIXME
 223                 dbg(DEBUG_ANY,
 224                     "ISDN_CMD_SETEAZ (id:%d, channel: %ld, number: %s)",
 225                     cntrl->driver, cntrl->arg, cntrl->parm.num);
 226                 break;
 227         case ISDN_CMD_SETL2: /* Set L2 to given protocol */
 228                 dbg(DEBUG_ANY, "ISDN_CMD_SETL2 (Channel: %ld, Proto: %lx)",
 229                      cntrl->arg & 0xff, (cntrl->arg >> 8));
 230
 231                 if ((cntrl->arg & 0xff) >= cs->channels) {
 232                         err("invalid channel (%u)",
 233                             (unsigned) cntrl->arg & 0xff);
 234                         return -EINVAL;
 235                 }
 236
 237                 if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg & 0xff].at_state,
 238                                        EV_PROTO_L2, NULL, cntrl->arg >> 8,
 239                                        NULL)) {
 240                         //FIXME what should we do?
 241                         return -ENOMEM;
 242                 }
 243
 244                 dbg(DEBUG_CMD, "scheduling PROTO_L2");
 245                 gigaset_schedule_event(cs);
 246                 break;
 247         case ISDN_CMD_SETL3: /* Set L3 to given protocol */
 248                 dbg(DEBUG_ANY, "ISDN_CMD_SETL3 (Channel: %ld, Proto: %lx)",
 249                      cntrl->arg & 0xff, (cntrl->arg >> 8));
 250
 251                 if ((cntrl->arg & 0xff) >= cs->channels) {
 252                         err("invalid channel (%u)",
 253                             (unsigned) cntrl->arg & 0xff);
 254                         return -EINVAL;
 255                 }
 256
 257                 if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
 258                         err("invalid protocol %lu", cntrl->arg >> 8);
 259                         return -EINVAL;
 260                 }
 261
 262                 break;
 263         case ISDN_CMD_PROCEED:
 264                 dbg(DEBUG_ANY, "ISDN_CMD_PROCEED"); //FIXME
 265                 break;
 266         case ISDN_CMD_ALERT:
 267                 dbg(DEBUG_ANY, "ISDN_CMD_ALERT"); //FIXME
 268                 if (cntrl->arg >= cs->channels) {
 269                         err("invalid channel (%d)", (int) cntrl->arg);
 270                         return -EINVAL;
 271                 }
 272                 //bcs = cs->bcs + cntrl->arg;
 273                 //bcs->proto2 = -1;
 274                 // FIXME
 275                 break;
 276         case ISDN_CMD_REDIR:
 277                 dbg(DEBUG_ANY, "ISDN_CMD_REDIR"); //FIXME
 278                 break;
 279         case ISDN_CMD_PROT_IO:
 280                 dbg(DEBUG_ANY, "ISDN_CMD_PROT_IO");
 281                 break;
 282         case ISDN_CMD_FAXCMD:
 283                 dbg(DEBUG_ANY, "ISDN_CMD_FAXCMD");
 284                 break;
 285         case ISDN_CMD_GETL2:
 286                 dbg(DEBUG_ANY, "ISDN_CMD_GETL2");
 287                 break;
 288         case ISDN_CMD_GETL3:
 289                 dbg(DEBUG_ANY, "ISDN_CMD_GETL3");
 290                 break;
 291         case ISDN_CMD_GETEAZ:
 292                 dbg(DEBUG_ANY, "ISDN_CMD_GETEAZ");
 293                 break;
 294         case ISDN_CMD_SETSIL:
 295                 dbg(DEBUG_ANY, "ISDN_CMD_SETSIL");
 296                 break;
 297         case ISDN_CMD_GETSIL:
 298                 dbg(DEBUG_ANY, "ISDN_CMD_GETSIL");
 299                 break;
 300         default:
 301                 err("unknown command %d from LL",
 302                      cntrl->command);
 303                 return -EINVAL;
 304         }
 305
 306         return retval;
 307 }
 308
 309 void gigaset_i4l_cmd(struct cardstate *cs, int cmd)
 310 {
 311         isdn_ctrl command;
 312
 313         command.driver = cs->myid;
 314         command.command = cmd;
 315         command.arg = 0;
 316         cs->iif.statcallb(&command);
 317 }
 318
 319 void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd)
 320 {
 321         isdn_ctrl command;
 322
 323         command.driver = bcs->cs->myid;
 324         command.command = cmd;
 325         command.arg = bcs->channel;
 326         bcs->cs->iif.statcallb(&command);
 327 }
 328
 329 int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data)
 330 {
 331         struct bc_state *bcs = at_state->bcs;
 332         unsigned proto;
 333         const char *bc;
 334         size_t length[AT_NUM];
 335         size_t l;
 336         int i;
 337         struct setup_parm *sp = data;
 338
 339         switch (bcs->proto2) {
 340         case ISDN_PROTO_L2_HDLC:
 341                 proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 342                 break;
 343         case ISDN_PROTO_L2_TRANS:
 344                 proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 345                 break;
 346         default:
 347                 err("invalid protocol: %u", bcs->proto2);
 348                 return -EINVAL;
 349         }
 350
 351         switch (sp->si1) {
 352         case 1:         /* audio */
 353                 bc = "9090A3";  /* 3.1 kHz audio, A-law */
 354                 break;
 355         case 7:         /* data */
 356         default:        /* hope the app knows what it is doing */
 357                 bc = "8890";    /* unrestricted digital information */
 358         }
 359         //FIXME add missing si1 values from 1TR6, inspect si2, set HLC/LLC
 360
 361         length[AT_DIAL ] = 1 + strlen(sp->phone) + 1 + 1;
 362         l = strlen(sp->eazmsn);
 363         length[AT_MSN  ] = l ? 6 + l + 1 + 1 : 0;
 364         length[AT_BC   ] = 5 + strlen(bc) + 1 + 1;
 365         length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
 366         length[AT_ISO  ] = 6 + 1 + 1 + 1; /* channel: 1 character */
 367         length[AT_TYPE ] = 6 + 1 + 1 + 1; /* call type: 1 character */
 368         length[AT_HLC  ] = 0;
 369
 370         for (i = 0; i < AT_NUM; ++i) {
 371                 kfree(bcs->commands[i]);
 372                 bcs->commands[i] = NULL;
 373                 if (length[i] &&
 374                     !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
 375                         err("out of memory");
 376                         return -ENOMEM;
 377                 }
 378         }
 379
 380         /* type = 1: extern, 0: intern, 2: recall, 3: door, 4: centrex */
 381         if (sp->phone[0] == '*' && sp->phone[1] == '*') {
 382                 /* internal call: translate ** prefix to CTP value */
 383                 snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
 384                          "D%s\r", sp->phone+2);
 385                 strncpy(bcs->commands[AT_TYPE], "^SCTP=0\r", length[AT_TYPE]);
 386         } else {
 387                 snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
 388                          "D%s\r", sp->phone);
 389                 strncpy(bcs->commands[AT_TYPE], "^SCTP=1\r", length[AT_TYPE]);
 390         }
 391
 392         if (bcs->commands[AT_MSN])
 393                 snprintf(bcs->commands[AT_MSN], length[AT_MSN],
 394                          "^SMSN=%s\r", sp->eazmsn);
 395         snprintf(bcs->commands[AT_BC   ], length[AT_BC   ],
 396                  "^SBC=%s\r", bc);
 397         snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
 398                  "^SBPR=%u\r", proto);
 399         snprintf(bcs->commands[AT_ISO  ], length[AT_ISO  ],
 400                  "^SISO=%u\r", (unsigned)bcs->channel + 1);
 401
 402         return 0;
 403 }
 404
 405 int gigaset_isdn_setup_accept(struct at_state_t *at_state)
 406 {
 407         unsigned proto;
 408         size_t length[AT_NUM];
 409         int i;
 410         struct bc_state *bcs = at_state->bcs;
 411
 412         switch (bcs->proto2) {
 413         case ISDN_PROTO_L2_HDLC:
 414                 proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 415                 break;
 416         case ISDN_PROTO_L2_TRANS:
 417                 proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 418                 break;
 419         default:
 420                 err("invalid protocol: %u", bcs->proto2);
 421                 return -EINVAL;
 422         }
 423
 424         length[AT_DIAL ] = 0;
 425         length[AT_MSN  ] = 0;
 426         length[AT_BC   ] = 0;
 427         length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
 428         length[AT_ISO  ] = 6 + 1 + 1 + 1; /* channel: 1 character */
 429         length[AT_TYPE ] = 0;
 430         length[AT_HLC  ] = 0;
 431
 432         for (i = 0; i < AT_NUM; ++i) {
 433                 kfree(bcs->commands[i]);
 434                 bcs->commands[i] = NULL;
 435                 if (length[i] &&
 436                     !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
 437                         err("out of memory");
 438                         return -ENOMEM;
 439                 }
 440         }
 441
 442         snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
 443                  "^SBPR=%u\r", proto);
 444         snprintf(bcs->commands[AT_ISO  ], length[AT_ISO  ],
 445                  "^SISO=%u\r", (unsigned) bcs->channel + 1);
 446
 447         return 0;
 448 }
 449
 450 int gigaset_isdn_icall(struct at_state_t *at_state)
 451 {
 452         struct cardstate *cs = at_state->cs;
 453         struct bc_state *bcs = at_state->bcs;
 454         isdn_ctrl response;
 455         int retval;
 456
 457         /* fill ICALL structure */
 458         response.parm.setup.si1 = 0;    /* default: unknown */
 459         response.parm.setup.si2 = 0;
 460         response.parm.setup.screen = 0; //FIXME how to set these?
 461         response.parm.setup.plan = 0;
 462         if (!at_state->str_var[STR_ZBC]) {
 463                 /* no BC (internal call): assume speech, A-law */
 464                 response.parm.setup.si1 = 1;
 465         } else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) {
 466                 /* unrestricted digital information */
 467                 response.parm.setup.si1 = 7;
 468         } else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) {
 469                 /* speech, A-law */
 470                 response.parm.setup.si1 = 1;
 471         } else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) {
 472                 /* 3,1 kHz audio, A-law */
 473                 response.parm.setup.si1 = 1;
 474                 response.parm.setup.si2 = 2;
 475         } else {
 476                 warn("RING ignored - unsupported BC %s",
 477                      at_state->str_var[STR_ZBC]);
 478                 return ICALL_IGNORE;
 479         }
 480         if (at_state->str_var[STR_NMBR]) {
 481                 strncpy(response.parm.setup.phone, at_state->str_var[STR_NMBR],
 482                         sizeof response.parm.setup.phone - 1);
 483                 response.parm.setup.phone[sizeof response.parm.setup.phone - 1] = 0;
 484         } else
 485                 response.parm.setup.phone[0] = 0;
 486         if (at_state->str_var[STR_ZCPN]) {
 487                 strncpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN],
 488                         sizeof response.parm.setup.eazmsn - 1);
 489                 response.parm.setup.eazmsn[sizeof response.parm.setup.eazmsn - 1] = 0;
 490         } else
 491                 response.parm.setup.eazmsn[0] = 0;
 492
 493         if (!bcs) {
 494                 notice("no channel for incoming call");
 495                 dbg(DEBUG_CMD, "Sending ICALLW");
 496                 response.command = ISDN_STAT_ICALLW;
 497                 response.arg = 0; //FIXME
 498         } else {
 499                 dbg(DEBUG_CMD, "Sending ICALL");
 500                 response.command = ISDN_STAT_ICALL;
 501                 response.arg = bcs->channel; //FIXME
 502         }
 503         response.driver = cs->myid;
 504         retval = cs->iif.statcallb(&response);
 505         dbg(DEBUG_CMD, "Response: %d", retval);
 506         switch (retval) {
 507         case 0: /* no takers */
 508                 return ICALL_IGNORE;
 509         case 1: /* alerting */
 510                 bcs->chstate |= CHS_NOTIFY_LL;
 511                 return ICALL_ACCEPT;
 512         case 2: /* reject */
 513                 return ICALL_REJECT;
 514         case 3: /* incomplete */
 515                 warn("LL requested unsupported feature: Incomplete Number");
 516                 return ICALL_IGNORE;
 517         case 4: /* proceeding */
 518                 /* Gigaset will send ALERTING anyway.
 519                  * There doesn't seem to be a way to avoid this.
 520                  */
 521                 return ICALL_ACCEPT;
 522         case 5: /* deflect */
 523                 warn("LL requested unsupported feature: Call Deflection");
 524                 return ICALL_IGNORE;
 525         default:
 526                 err("LL error %d on ICALL", retval);
 527                 return ICALL_IGNORE;
 528         }
 529 }
 530
 531 /* Set Callback function pointer */
 532 int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid)
 533 {
 534         isdn_if *iif = &cs->iif;
 535
 536         dbg(DEBUG_ANY, "Register driver capabilities to LL");
 537
 538         //iif->id[sizeof(iif->id) - 1]=0;
 539         //strncpy(iif->id, isdnid, sizeof(iif->id) - 1);
 540         if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index)
 541             >= sizeof iif->id)
 542                 return -ENOMEM; //FIXME EINVAL/...??
 543
 544         iif->owner = THIS_MODULE;
 545         iif->channels = cs->channels;
 546         iif->maxbufsize = MAX_BUF_SIZE;
 547         iif->features = ISDN_FEATURE_L2_TRANS |
 548                 ISDN_FEATURE_L2_HDLC |
 549 #ifdef GIG_X75
 550                 ISDN_FEATURE_L2_X75I |
 551 #endif
 552                 ISDN_FEATURE_L3_TRANS |
 553                 ISDN_FEATURE_P_EURO;
 554         iif->hl_hdrlen = HW_HDR_LEN;              /* Area for storing ack */
 555         iif->command = command_from_LL;
 556         iif->writebuf_skb = writebuf_from_LL;
 557         iif->writecmd = NULL;                     /* Don't support isdnctrl */
 558         iif->readstat = NULL;                     /* Don't support isdnctrl */
 559         iif->rcvcallb_skb = NULL;                 /* Will be set by LL */
 560         iif->statcallb = NULL;                    /* Will be set by LL */
 561
 562         if (!register_isdn(iif))
 563                 return 0;
 564
 565         cs->myid = iif->channels;                 /* Set my device id */
 566         return 1;
 567 }