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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 | /* * Audio Command Interface (ACI) driver (sound/aci.c) * * ACI is a protocol used to communicate with the microcontroller on * some sound cards produced by miro, e.g. the miroSOUND PCM12 and * PCM20. The ACI has been developed for miro by Norberto Pellicci * <pellicci@ix.netcom.com>. Special thanks to both him and miro for * providing the ACI specification. * * The main function of the ACI is to control the mixer and to get a * product identification. On the PCM20, ACI also controls the radio * tuner on this card, however this is not yet supported in this * software. * * This Voxware ACI driver currently only supports the ACI functions * on the miroSOUND PCM12 card. Support for miro soundcards with * additional ACI functions can easily be added later. * * Revision history: * * 1995-11-10 Markus Kuhn <mskuhn@cip.informatik.uni-erlangen.de> * First version written. * 1995-12-31 Markus Kuhn * Second revision, general code cleanup. * 1996-05-16 Hannu Savolainen * Integrated with other parts of the driver. * 1996-05-28 Markus Kuhn * Initialize CS4231A mixer, make ACI first mixer, * use new private mixer API for solo mode. */ /* * Some driver specific information and features: * * This mixer driver identifies itself to applications as "ACI" in * mixer_info.id as retrieved by ioctl(fd, SOUND_MIXER_INFO, &mixer_info). * * Proprietary mixer features that go beyond the standard USS mixer * interface are: * * Full duplex solo configuration: * * int solo_mode; * ioctl(fd, SOUND_MIXER_PRIVATE1, &solo_mode); * * solo_mode = 0: deactivate solo mode (default) * solo_mode > 0: activate solo mode * With activated solo mode, the PCM input can not any * longer hear the signals produced by the PCM output. * Activating solo mode is important in duplex mode in order * to avoid feedback distortions. * solo_mode < 0: do not change solo mode (just retrieve the status) * * When the ioctl() returns 0, solo_mode contains the previous * status (0 = deactivated, 1 = activated). If solo mode is not * implemented on this card, ioctl() returns -1 and sets errno to * EINVAL. * */ #include "../sound_config.h" #ifdef CONFIG_ACI_MIXER #undef DEBUG /* if defined, produce a verbose report via syslog */ int aci_port = 0x354; /* as determined by bit 4 in the OPTi 929 MC4 register */ unsigned char aci_idcode[2] = {0, 0}; /* manufacturer and product ID */ unsigned char aci_version = 0; /* ACI firmware version */ int aci_solo; /* status bit of the card that can't be * * checked with ACI versions prior to 0xb0 */ static int aci_present = 0; #define COMMAND_REGISTER (aci_port) #define STATUS_REGISTER (aci_port + 1) #define BUSY_REGISTER (aci_port + 2) /* * Wait until the ACI microcontroller has set the READYFLAG in the * Busy/IRQ Source Register to 0. This is required to avoid * overrunning the soundcard microcontroller. We do a busy wait here, * because the microcontroller is not supposed to signal a busy * condition for more than a few clock cycles. In case of a time-out, * this function returns -1. * * This busy wait code normally requires less than 15 loops and * practically always less than 100 loops on my i486/DX2 66 MHz. * * Warning: Waiting on the general status flag after reseting the MUTE * function can take a VERY long time, because the PCM12 does some kind * of fade-in effect. For this reason, access to the MUTE function has * not been implemented at all. */ static int busy_wait(void) { long timeout; for (timeout = 0; timeout < 10000000L; timeout++) if ((inb_p(BUSY_REGISTER) & 1) == 0) return 0; #ifdef DEBUG printk("ACI: READYFLAG timed out.\n"); #endif return -1; } /* * Read the GENERAL STATUS register. */ static int read_general_status(void) { unsigned long flags; int status; save_flags(flags); cli(); if (busy_wait()) { restore_flags(flags); return -1; } status = (unsigned) inb_p(STATUS_REGISTER); restore_flags(flags); return status; } /* * The four ACI command types (implied, write, read and indexed) can * be sent to the microcontroller using the following four functions. * If a problem occurred, they return -1. */ static int implied_cmd(unsigned char opcode) { unsigned long flags; #ifdef DEBUG printk("ACI: implied_cmd(0x%02x)\n", opcode); #endif save_flags(flags); cli(); if (read_general_status() < 0 || busy_wait()) { restore_flags(flags); return -1; } outb_p(opcode, COMMAND_REGISTER); restore_flags(flags); return 0; } static int write_cmd(unsigned char opcode, unsigned char parameter) { unsigned long flags; int status; #ifdef DEBUG printk("ACI: write_cmd(0x%02x, 0x%02x)\n", opcode, parameter); #endif save_flags(flags); cli(); if (read_general_status() < 0 || busy_wait()) { restore_flags(flags); return -1; } outb_p(opcode, COMMAND_REGISTER); if (busy_wait()) { restore_flags(flags); return -1; } outb_p(parameter, COMMAND_REGISTER); if ((status = read_general_status()) < 0) { restore_flags(flags); return -1; } /* polarity of the INVALID flag depends on ACI version */ if ((aci_version < 0xb0 && (status & 0x40) != 0) || (aci_version >= 0xb0 && (status & 0x40) == 0)) { restore_flags(flags); printk("ACI: invalid write command 0x%02x, 0x%02x.\n", opcode, parameter); return -1; } restore_flags(flags); return 0; } static int read_cmd(unsigned char opcode, int length, unsigned char *parameter) { unsigned long flags; int i = 0; save_flags(flags); cli(); if (read_general_status() < 0) { restore_flags(flags); return -1; } while (i < length) { if (busy_wait()) { restore_flags(flags); return -1; } outb_p(opcode, COMMAND_REGISTER); if (busy_wait()) { restore_flags(flags); return -1; } parameter[i++] = inb_p(STATUS_REGISTER); #ifdef DEBUG if (i == 1) printk("ACI: read_cmd(0x%02x, %d) = 0x%02x\n", opcode, length, parameter[i-1]); else printk("ACI: read_cmd cont.: 0x%02x\n", parameter[i-1]); #endif } restore_flags(flags); return 0; } static int indexed_cmd(unsigned char opcode, unsigned char index, unsigned char *parameter) { unsigned long flags; save_flags(flags); cli(); if (read_general_status() < 0 || busy_wait()) { restore_flags(flags); return -1; } outb_p(opcode, COMMAND_REGISTER); if (busy_wait()) { restore_flags(flags); return -1; } outb_p(index, COMMAND_REGISTER); if (busy_wait()) { restore_flags(flags); return -1; } *parameter = inb_p(STATUS_REGISTER); #ifdef DEBUG printk("ACI: indexed_cmd(0x%02x, 0x%02x) = 0x%02x\n", opcode, index, *parameter); #endif restore_flags(flags); return 0; } /* * The following macro SCALE can be used to scale one integer volume * value into another one using only integer arithmetic. If the input * value x is in the range 0 <= x <= xmax, then the result will be in * the range 0 <= SCALE(xmax,ymax,x) <= ymax. * * This macro has for all xmax, ymax > 0 and all 0 <= x <= xmax the * following nice properties: * * - SCALE(xmax,ymax,xmax) = ymax * - SCALE(xmax,ymax,0) = 0 * - SCALE(xmax,ymax,SCALE(ymax,xmax,SCALE(xmax,ymax,x))) = SCALE(xmax,ymax,x) * * In addition, the rounding error is minimal and nicely distributed. * The proofs are left as an exercise to the reader. */ #define SCALE(xmax,ymax,x) (((x)*(ymax)+(xmax)/2)/(xmax)) static int getvolume(caddr_t arg, unsigned char left_index, unsigned char right_index) { int vol; unsigned char buf; /* left channel */ if (indexed_cmd(0xf0, left_index, &buf)) return -EIO; vol = SCALE(0x20, 100, buf < 0x20 ? 0x20-buf : 0); /* right channel */ if (indexed_cmd(0xf0, right_index, &buf)) return -EIO; vol |= SCALE(0x20, 100, buf < 0x20 ? 0x20-buf : 0) << 8; return snd_ioctl_return((int *) arg, vol); } static int setvolume(caddr_t arg, unsigned char left_index, unsigned char right_index) { int vol, ret; unsigned param; param = get_user((int *) arg); /* left channel */ vol = param & 0xff; if (vol > 100) vol = 100; vol = SCALE(100, 0x20, vol); if (write_cmd(left_index, 0x20 - vol)) return -EIO; ret = SCALE(0x20, 100, vol); /* right channel */ vol = (param >> 8) & 0xff; if (vol > 100) vol = 100; vol = SCALE(100, 0x20, vol); if (write_cmd(right_index, 0x20 - vol)) return -EIO; ret |= SCALE(0x20, 100, vol) << 8; return snd_ioctl_return((int *) arg, ret); } static int aci_mixer_ioctl (int dev, unsigned int cmd, caddr_t arg) { int status, vol; unsigned char buf; /* handle solo mode control */ if (cmd == SOUND_MIXER_PRIVATE1) { if (get_user((int *) arg) >= 0) { aci_solo = !!get_user((int *) arg); if (write_cmd(0xd2, aci_solo)) return -EIO; } else if (aci_version >= 0xb0) { if ((status = read_general_status()) < 0) return -EIO; return snd_ioctl_return ((int *) arg, (status & 0x20) == 0); } return snd_ioctl_return((int *) arg, aci_solo); } if (((cmd >> 8) & 0xff) == 'M') { if (cmd & IOC_IN) /* read and write */ switch (cmd & 0xff) { case SOUND_MIXER_VOLUME: return setvolume(arg, 0x01, 0x00); case SOUND_MIXER_CD: return setvolume(arg, 0x3c, 0x34); case SOUND_MIXER_MIC: return setvolume(arg, 0x38, 0x30); case SOUND_MIXER_LINE: return setvolume(arg, 0x39, 0x31); case SOUND_MIXER_SYNTH: return setvolume(arg, 0x3b, 0x33); case SOUND_MIXER_PCM: return setvolume(arg, 0x3a, 0x32); case SOUND_MIXER_LINE1: /* AUX1 */ return setvolume(arg, 0x3d, 0x35); case SOUND_MIXER_LINE2: /* AUX2 */ return setvolume(arg, 0x3e, 0x36); case SOUND_MIXER_IGAIN: /* MIC pre-amp */ vol = get_user((int *) arg) & 0xff; if (vol > 100) vol = 100; vol = SCALE(100, 3, vol); if (write_cmd(0x03, vol)) return -EIO; vol = SCALE(3, 100, vol); return snd_ioctl_return((int *) arg, vol | (vol << 8)); case SOUND_MIXER_RECSRC: return snd_ioctl_return ((int *) arg, 0); break; default: return -EINVAL; } else /* only read */ switch (cmd & 0xff) { case SOUND_MIXER_DEVMASK: return snd_ioctl_return ((int *) arg, SOUND_MASK_VOLUME | SOUND_MASK_CD | SOUND_MASK_MIC | SOUND_MASK_LINE | SOUND_MASK_SYNTH | SOUND_MASK_PCM | #if 0 SOUND_MASK_IGAIN | #endif SOUND_MASK_LINE1 | SOUND_MASK_LINE2); break; case SOUND_MIXER_STEREODEVS: return snd_ioctl_return ((int *) arg, SOUND_MASK_VOLUME | SOUND_MASK_CD | SOUND_MASK_MIC | SOUND_MASK_LINE | SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_LINE1 | SOUND_MASK_LINE2); break; case SOUND_MIXER_RECMASK: return snd_ioctl_return ((int *) arg, 0); break; case SOUND_MIXER_RECSRC: return snd_ioctl_return ((int *) arg, 0); break; case SOUND_MIXER_CAPS: return snd_ioctl_return ((int *) arg, 0); break; case SOUND_MIXER_VOLUME: return getvolume(arg, 0x04, 0x03); case SOUND_MIXER_CD: return getvolume(arg, 0x0a, 0x09); case SOUND_MIXER_MIC: return getvolume(arg, 0x06, 0x05); case SOUND_MIXER_LINE: return getvolume(arg, 0x08, 0x07); case SOUND_MIXER_SYNTH: return getvolume(arg, 0x0c, 0x0b); case SOUND_MIXER_PCM: return getvolume(arg, 0x0e, 0x0d); case SOUND_MIXER_LINE1: /* AUX1 */ return getvolume(arg, 0x11, 0x10); case SOUND_MIXER_LINE2: /* AUX2 */ return getvolume(arg, 0x13, 0x12); case SOUND_MIXER_IGAIN: /* MIC pre-amp */ if (indexed_cmd(0xf0, 0x21, &buf)) return -EIO; vol = SCALE(3, 100, buf <= 3 ? buf : 3); vol |= vol << 8; return snd_ioctl_return((int *) arg, vol); default: return -EINVAL; } } return -EINVAL; } static struct mixer_operations aci_mixer_operations = { "ACI", "ACI mixer", aci_mixer_ioctl, NULL }; static unsigned char mad_read (int port) { outb (0xE3, 0xf8f); /* Write MAD16 password */ return inb (port); /* Read from port */ } /* * Check, whether there actually is any ACI port operational and if * one was found, then initialize the ACI interface, reserve the I/O * addresses and attach the new mixer to the relevant VoxWare data * structures. * * Returns: 1 ACI mixer detected * 0 nothing there * * There is also an internal mixer in the codec (CS4231A or AD1845), * that deserves no purpose in an ACI based system which uses an * external ACI controlled stereo mixer. Make sure that this codec * mixer has the AUX1 input selected as the recording source, that the * input gain is set near maximum and that the other channels going * from the inputs to the codec output are muted. */ int attach_aci(void) { char *boardname = "unknown"; int volume; #define MC4_PORT 0xf90 aci_port = (mad_read(MC4_PORT) & 0x10) ? 0x344 : 0x354; if (check_region(aci_port, 3)) { #ifdef DEBUG printk("ACI: I/O area 0x%03x-0x%03x already used.\n", aci_port, aci_port+2); #endif return 0; } if (read_cmd(0xf2, 2, aci_idcode)) { #ifdef DEBUG printk("ACI: Failed to read idcode.\n"); #endif return 0; } if (read_cmd(0xf1, 1, &aci_version)) { #ifdef DEBUG printk("ACI: Failed to read version.\n"); #endif return 0; } if (aci_idcode[0] == 0x6d) { /* it looks like a miro soundcard */ switch (aci_idcode[1]) { case 0x41: boardname = "PCM1 pro / early PCM12"; break; case 0x42: boardname = "PCM12"; break; case 0x43: boardname = "PCM20"; break; default: boardname = "unknown miro"; } } else #ifndef DEBUG return 0; #endif printk("<ACI %02x, id %02x %02x (%s)> at 0x%03x\n", aci_version, aci_idcode[0], aci_idcode[1], boardname, aci_port); /* initialize ACI mixer */ implied_cmd(0xff); aci_solo = 0; /* attach the mixer */ request_region(aci_port, 3, "sound mixer (ACI)"); if (num_mixers < MAX_MIXER_DEV) { if (num_mixers > 0 && !strcmp("MAD16 WSS (CS4231A)", mixer_devs[num_mixers-1]->name)) { /* * The previously registered mixer device is the CS4231A which * has no function on an ACI card. Make the ACI mixer the first * of the two mixer devices. */ mixer_devs[num_mixers] = mixer_devs[num_mixers-1]; mixer_devs[num_mixers-1] = &aci_mixer_operations; /* * Initialize the CS4231A mixer with reasonable values. It is * unlikely that the user ever will want to change these as all * channels can be mixed via ACI. */ volume = 0x6464; mixer_devs[num_mixers]-> ioctl(num_mixers, SOUND_MIXER_WRITE_PCM, (caddr_t) &volume); volume = 0x6464; mixer_devs[num_mixers]-> ioctl(num_mixers, SOUND_MIXER_WRITE_IGAIN, (caddr_t) &volume); volume = 0; mixer_devs[num_mixers]-> ioctl(num_mixers, SOUND_MIXER_WRITE_SPEAKER, (caddr_t) &volume); volume = 0; mixer_devs[num_mixers]-> ioctl(num_mixers, SOUND_MIXER_WRITE_MIC, (caddr_t) &volume); volume = 0; mixer_devs[num_mixers]-> ioctl(num_mixers, SOUND_MIXER_WRITE_IMIX, (caddr_t) &volume); volume = 0; mixer_devs[num_mixers]-> ioctl(num_mixers, SOUND_MIXER_WRITE_LINE1, (caddr_t) &volume); volume = 0; mixer_devs[num_mixers]-> ioctl(num_mixers, SOUND_MIXER_WRITE_LINE2, (caddr_t) &volume); volume = 0; mixer_devs[num_mixers]-> ioctl(num_mixers, SOUND_MIXER_WRITE_LINE3, (caddr_t) &volume); volume = SOUND_MASK_LINE1; mixer_devs[num_mixers]-> ioctl(num_mixers, SOUND_MIXER_WRITE_RECSRC, (caddr_t) &volume); num_mixers++; } else mixer_devs[num_mixers++] = &aci_mixer_operations; } /* Initialize ACI mixer with reasonable power-up values */ volume = 0x3232; aci_mixer_ioctl(num_mixers-1, SOUND_MIXER_WRITE_VOLUME, (caddr_t) &volume); volume = 0x3232; aci_mixer_ioctl(num_mixers-1, SOUND_MIXER_WRITE_SYNTH, (caddr_t) &volume); volume = 0x3232; aci_mixer_ioctl(num_mixers-1, SOUND_MIXER_WRITE_PCM, (caddr_t) &volume); volume = 0x3232; aci_mixer_ioctl(num_mixers-1, SOUND_MIXER_WRITE_LINE, (caddr_t) &volume); volume = 0x3232; aci_mixer_ioctl(num_mixers-1, SOUND_MIXER_WRITE_MIC, (caddr_t) &volume); volume = 0x3232; aci_mixer_ioctl(num_mixers-1, SOUND_MIXER_WRITE_CD, (caddr_t) &volume); volume = 0x3232; aci_mixer_ioctl(num_mixers-1, SOUND_MIXER_WRITE_LINE1, (caddr_t) &volume); volume = 0x3232; aci_mixer_ioctl(num_mixers-1, SOUND_MIXER_WRITE_LINE2, (caddr_t) &volume); aci_present = 1; return 1; } void unload_aci(void) { if (aci_present) release_region(aci_port, 3); } #endif |