Based on kernel version 2.6.33. Page generated on 2010-02-24 15:37 EST.
1 2 Advanced Linux Sound Architecture - Driver 3 ========================================== 4 Configuration guide 5 6 7 Kernel Configuration 8 ==================== 9 10 To enable ALSA support you need at least to build the kernel with 11 primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS, 12 you don't have to choose any of the OSS modules. 13 14 Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and 15 PCM supports if you want to run OSS applications with ALSA. 16 17 If you want to support the WaveTable functionality on cards such as 18 SB Live! then you need to enable "Sequencer support" 19 (CONFIG_SND_SEQUENCER). 20 21 To make ALSA debug messages more verbose, enable the "Verbose printk" 22 and "Debug" options. To check for memory leaks, turn on "Debug memory" 23 too. "Debug detection" will add checks for the detection of cards. 24 25 Please note that all the ALSA ISA drivers support the Linux isapnp API 26 (if the card supports ISA PnP). You don't need to configure the cards 27 using isapnptools. 28 29 30 Creating ALSA devices 31 ===================== 32 33 This depends on your distribution, but normally you use the /dev/MAKEDEV 34 script to create the necessary device nodes. On some systems you use a 35 script named 'snddevices'. 36 37 38 Module parameters 39 ================= 40 41 The user can load modules with options. If the module supports more than 42 one card and you have more than one card of the same type then you can 43 specify multiple values for the option separated by commas. 44 45 Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. 46 47 Module snd 48 ---------- 49 50 The core ALSA module. It is used by all ALSA card drivers. 51 It takes the following options which have global effects. 52 53 major - major number for sound driver 54 - Default: 116 55 cards_limit 56 - limiting card index for auto-loading (1-8) 57 - Default: 1 58 - For auto-loading more than one card, specify this 59 option together with snd-card-X aliases. 60 slots - Reserve the slot index for the given driver. 61 This option takes multiple strings. 62 See "Module Autoloading Support" section for details. 63 debug - Specifies the debug message level 64 (0 = disable debug prints, 1 = normal debug messages, 65 2 = verbose debug messages) 66 This option appears only when CONFIG_SND_DEBUG=y. 67 This option can be dynamically changed via sysfs 68 /sys/modules/snd/parameters/debug file. 69 70 Module snd-pcm-oss 71 ------------------ 72 73 The PCM OSS emulation module. 74 This module takes options which change the mapping of devices. 75 76 dsp_map - PCM device number maps assigned to the 1st OSS device. 77 - Default: 0 78 adsp_map - PCM device number maps assigned to the 2st OSS device. 79 - Default: 1 80 nonblock_open 81 - Don't block opening busy PCM devices. Default: 1 82 83 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of 84 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped 85 to PCM #0 of the card #0. 86 For changing the second or later card, specify the option with 87 commas, such like "dsp_map=0,1". 88 89 nonblock_open option is used to change the behavior of the PCM 90 regarding opening the device. When this option is non-zero, 91 opening a busy OSS PCM device won't be blocked but return 92 immediately with EAGAIN (just like O_NONBLOCK flag). 93 94 Module snd-rawmidi 95 ------------------ 96 97 This module takes options which change the mapping of devices. 98 similar to those of the snd-pcm-oss module. 99 100 midi_map - MIDI device number maps assigned to the 1st OSS device. 101 - Default: 0 102 amidi_map - MIDI device number maps assigned to the 2st OSS device. 103 - Default: 1 104 105 Common parameters for top sound card modules 106 -------------------------------------------- 107 108 Each of top level sound card module takes the following options. 109 110 index - index (slot #) of sound card 111 - Values: 0 through 31 or negative 112 - If nonnegative, assign that index number 113 - if negative, interpret as a bitmask of permissible 114 indices; the first free permitted index is assigned 115 - Default: -1 116 id - card ID (identifier or name) 117 - Can be up to 15 characters long 118 - Default: the card type 119 - A directory by this name is created under /proc/asound/ 120 containing information about the card 121 - This ID can be used instead of the index number in 122 identifying the card 123 enable - enable card 124 - Default: enabled, for PCI and ISA PnP cards 125 126 Module snd-adlib 127 ---------------- 128 129 Module for AdLib FM cards. 130 131 port - port # for OPL chip 132 133 This module supports multiple cards. It does not support autoprobe, so 134 the port must be specified. For actual AdLib FM cards it will be 0x388. 135 Note that this card does not have PCM support and no mixer; only FM 136 synthesis. 137 138 Make sure you have "sbiload" from the alsa-tools package available and, 139 after loading the module, find out the assigned ALSA sequencer port 140 number through "sbiload -l". Example output: 141 142 Port Client name Port name 143 64:0 OPL2 FM synth OPL2 FM Port 144 145 Load the std.sb and drums.sb patches also supplied by sbiload: 146 147 sbiload -p 64:0 std.sb drums.sb 148 149 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3 150 instead. To have the card produce sound, use aplaymidi from alsa-utils: 151 152 aplaymidi -p 64:0 foo.mid 153 154 Module snd-ad1816a 155 ------------------ 156 157 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips. 158 159 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz) 160 161 This module supports multiple cards, autoprobe and PnP. 162 163 Module snd-ad1848 164 ----------------- 165 166 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips. 167 168 port - port # for AD1848 chip 169 irq - IRQ # for AD1848 chip 170 dma1 - DMA # for AD1848 chip (0,1,3) 171 172 This module supports multiple cards. It does not support autoprobe 173 thus main port must be specified!!! Other ports are optional. 174 175 The power-management is supported. 176 177 Module snd-ad1889 178 ----------------- 179 180 Module for Analog Devices AD1889 chips. 181 182 ac97_quirk - AC'97 workaround for strange hardware 183 See the description of intel8x0 module for details. 184 185 This module supports multiple cards. 186 187 Module snd-ali5451 188 ------------------ 189 190 Module for ALi M5451 PCI chip. 191 192 pcm_channels - Number of hardware channels assigned for PCM 193 spdif - Support SPDIF I/O 194 - Default: disabled 195 196 This module supports one chip and autoprobe. 197 198 The power-management is supported. 199 200 Module snd-als100 201 ----------------- 202 203 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips. 204 205 This module supports multiple cards, autoprobe and PnP. 206 207 The power-management is supported. 208 209 Module snd-als300 210 ----------------- 211 212 Module for Avance Logic ALS300 and ALS300+ 213 214 This module supports multiple cards. 215 216 The power-management is supported. 217 218 Module snd-als4000 219 ------------------ 220 221 Module for sound cards based on Avance Logic ALS4000 PCI chip. 222 223 joystick_port - port # for legacy joystick support. 224 0 = disabled (default), 1 = auto-detect 225 226 This module supports multiple cards, autoprobe and PnP. 227 228 The power-management is supported. 229 230 Module snd-atiixp 231 ----------------- 232 233 Module for ATI IXP 150/200/250/400 AC97 controllers. 234 235 ac97_clock - AC'97 clock (default = 48000) 236 ac97_quirk - AC'97 workaround for strange hardware 237 See "AC97 Quirk Option" section below. 238 ac97_codec - Workaround to specify which AC'97 codec 239 instead of probing. If this works for you 240 file a bug with your `lspci -vn` output. 241 -2 -- Force probing. 242 -1 -- Default behavior. 243 0-2 -- Use the specified codec. 244 spdif_aclink - S/PDIF transfer over AC-link (default = 1) 245 246 This module supports one card and autoprobe. 247 248 ATI IXP has two different methods to control SPDIF output. One is 249 over AC-link and another is over the "direct" SPDIF output. The 250 implementation depends on the motherboard, and you'll need to 251 choose the correct one via spdif_aclink module option. 252 253 The power-management is supported. 254 255 Module snd-atiixp-modem 256 ----------------------- 257 258 Module for ATI IXP 150/200/250 AC97 modem controllers. 259 260 This module supports one card and autoprobe. 261 262 Note: The default index value of this module is -2, i.e. the first 263 slot is excluded. 264 265 The power-management is supported. 266 267 Module snd-au8810, snd-au8820, snd-au8830 268 ----------------------------------------- 269 270 Module for Aureal Vortex, Vortex2 and Advantage device. 271 272 pcifix - Control PCI workarounds 273 0 = Disable all workarounds 274 1 = Force the PCI latency of the Aureal card to 0xff 275 2 = Force the Extend PCI#2 Internal Master for Efficient 276 Handling of Dummy Requests on the VIA KT133 AGP Bridge 277 3 = Force both settings 278 255 = Autodetect what is required (default) 279 280 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware 281 EQ, mpu401, gameport. A3D and wavetable support are still in development. 282 Development and reverse engineering work is being coordinated at 283 http://savannah.nongnu.org/projects/openvortex/ 284 SPDIF output has a copy of the AC97 codec output, unless you use the 285 "spdif" pcm device, which allows raw data passthru. 286 The hardware EQ hardware and SPDIF is only present in the Vortex2 and 287 Advantage. 288 289 Note: Some ALSA mixer applications don't handle the SPDIF sample rate 290 control correctly. If you have problems regarding this, try 291 another ALSA compliant mixer (alsamixer works). 292 293 Module snd-aw2 294 -------------- 295 296 Module for Audiowerk2 sound card 297 298 This module supports multiple cards. 299 300 Module snd-azt2320 301 ------------------ 302 303 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only). 304 305 This module supports multiple cards, PnP and autoprobe. 306 307 The power-management is supported. 308 309 Module snd-azt3328 310 ------------------ 311 312 Module for sound cards based on Aztech AZF3328 PCI chip. 313 314 joystick - Enable joystick (default off) 315 316 This module supports multiple cards. 317 318 Module snd-bt87x 319 ---------------- 320 321 Module for video cards based on Bt87x chips. 322 323 digital_rate - Override the default digital rate (Hz) 324 load_all - Load the driver even if the card model isn't known 325 326 This module supports multiple cards. 327 328 Note: The default index value of this module is -2, i.e. the first 329 slot is excluded. 330 331 Module snd-ca0106 332 ----------------- 333 334 Module for Creative Audigy LS and SB Live 24bit 335 336 This module supports multiple cards. 337 338 339 Module snd-cmi8330 340 ------------------ 341 342 Module for sound cards based on C-Media CMI8330 ISA chips. 343 344 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 345 346 with isapnp=0, the following options are available: 347 348 wssport - port # for CMI8330 chip (WSS) 349 wssirq - IRQ # for CMI8330 chip (WSS) 350 wssdma - first DMA # for CMI8330 chip (WSS) 351 sbport - port # for CMI8330 chip (SB16) 352 sbirq - IRQ # for CMI8330 chip (SB16) 353 sbdma8 - 8bit DMA # for CMI8330 chip (SB16) 354 sbdma16 - 16bit DMA # for CMI8330 chip (SB16) 355 fmport - (optional) OPL3 I/O port 356 mpuport - (optional) MPU401 I/O port 357 mpuirq - (optional) MPU401 irq # 358 359 This module supports multiple cards and autoprobe. 360 361 The power-management is supported. 362 363 Module snd-cmipci 364 ----------------- 365 366 Module for C-Media CMI8338/8738/8768/8770 PCI sound cards. 367 368 mpu_port - port address of MIDI interface (8338 only): 369 0x300,0x310,0x320,0x330 = legacy port, 370 0 = disable (default) 371 fm_port - port address of OPL-3 FM synthesizer (8x38 only): 372 0x388 = legacy port, 373 1 = integrated PCI port (default on 8738), 374 0 = disable 375 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only) 376 (default = 1) 377 joystick_port - Joystick port address (0 = disable, 1 = auto-detect) 378 379 This module supports autoprobe and multiple cards. 380 381 The power-management is supported. 382 383 Module snd-cs4231 384 ----------------- 385 386 Module for sound cards based on CS4231 ISA chips. 387 388 port - port # for CS4231 chip 389 mpu_port - port # for MPU-401 UART (optional), -1 = disable 390 irq - IRQ # for CS4231 chip 391 mpu_irq - IRQ # for MPU-401 UART 392 dma1 - first DMA # for CS4231 chip 393 dma2 - second DMA # for CS4231 chip 394 395 This module supports multiple cards. This module does not support autoprobe 396 thus main port must be specified!!! Other ports are optional. 397 398 The power-management is supported. 399 400 Module snd-cs4236 401 ----------------- 402 403 Module for sound cards based on CS4232/CS4232A, 404 CS4235/CS4236/CS4236B/CS4237B/ 405 CS4238B/CS4239 ISA chips. 406 407 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 408 409 with isapnp=0, the following options are available: 410 411 port - port # for CS4236 chip (PnP setup - 0x534) 412 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00) 413 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable 414 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable 415 irq - IRQ # for CS4236 chip (5,7,9,11,12,15) 416 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15) 417 dma1 - first DMA # for CS4236 chip (0,1,3) 418 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable 419 420 This module supports multiple cards. This module does not support autoprobe 421 (if ISA PnP is not used) thus main port and control port must be 422 specified!!! Other ports are optional. 423 424 The power-management is supported. 425 426 This module is aliased as snd-cs4232 since it provides the old 427 snd-cs4232 functionality, too. 428 429 Module snd-cs4281 430 ----------------- 431 432 Module for Cirrus Logic CS4281 soundchip. 433 434 dual_codec - Secondary codec ID (0 = disable, default) 435 436 This module supports multiple cards. 437 438 The power-management is supported. 439 440 Module snd-cs46xx 441 ----------------- 442 443 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/ 444 CS4624/CS4630/CS4280 PCI chips. 445 446 external_amp - Force to enable external amplifier. 447 thinkpad - Force to enable Thinkpad's CLKRUN control. 448 mmap_valid - Support OSS mmap mode (default = 0). 449 450 This module supports multiple cards and autoprobe. 451 Usually external amp and CLKRUN controls are detected automatically 452 from PCI sub vendor/device ids. If they don't work, give the options 453 above explicitly. 454 455 The power-management is supported. 456 457 Module snd-cs5530 458 _________________ 459 460 Module for Cyrix/NatSemi Geode 5530 chip. 461 462 Module snd-cs5535audio 463 ---------------------- 464 465 Module for multifunction CS5535 companion PCI device 466 467 The power-management is supported. 468 469 Module snd-ctxfi 470 ---------------- 471 472 Module for Creative Sound Blaster X-Fi boards (20k1 / 20k2 chips) 473 * Creative Sound Blaster X-Fi Titanium Fatal1ty Champion Series 474 * Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series 475 * Creative Sound Blaster X-Fi Titanium Professional Audio 476 * Creative Sound Blaster X-Fi Titanium 477 * Creative Sound Blaster X-Fi Elite Pro 478 * Creative Sound Blaster X-Fi Platinum 479 * Creative Sound Blaster X-Fi Fatal1ty 480 * Creative Sound Blaster X-Fi XtremeGamer 481 * Creative Sound Blaster X-Fi XtremeMusic 482 483 reference_rate - reference sample rate, 44100 or 48000 (default) 484 multiple - multiple to ref. sample rate, 1 or 2 (default) 485 486 This module supports multiple cards. 487 488 Module snd-darla20 489 ------------------ 490 491 Module for Echoaudio Darla20 492 493 This module supports multiple cards. 494 The driver requires the firmware loader support on kernel. 495 496 Module snd-darla24 497 ------------------ 498 499 Module for Echoaudio Darla24 500 501 This module supports multiple cards. 502 The driver requires the firmware loader support on kernel. 503 504 Module snd-dt019x 505 ----------------- 506 507 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP 508 only) 509 510 This module supports multiple cards. This module is enabled only with 511 ISA PnP support. 512 513 The power-management is supported. 514 515 Module snd-dummy 516 ---------------- 517 518 Module for the dummy sound card. This "card" doesn't do any output 519 or input, but you may use this module for any application which 520 requires a sound card (like RealPlayer). 521 522 pcm_devs - Number of PCM devices assigned to each card 523 (default = 1, up to 4) 524 pcm_substreams - Number of PCM substreams assigned to each PCM 525 (default = 8, up to 128) 526 hrtimer - Use hrtimer (=1, default) or system timer (=0) 527 fake_buffer - Fake buffer allocations (default = 1) 528 529 When multiple PCM devices are created, snd-dummy gives different 530 behavior to each PCM device: 531 0 = interleaved with mmap support 532 1 = non-interleaved with mmap support 533 2 = interleaved without mmap 534 3 = non-interleaved without mmap 535 536 As default, snd-dummy drivers doesn't allocate the real buffers 537 but either ignores read/write or mmap a single dummy page to all 538 buffer pages, in order to save the resouces. If your apps need 539 the read/ written buffer data to be consistent, pass fake_buffer=0 540 option. 541 542 The power-management is supported. 543 544 Module snd-echo3g 545 ----------------- 546 547 Module for Echoaudio 3G cards (Gina3G/Layla3G) 548 549 This module supports multiple cards. 550 The driver requires the firmware loader support on kernel. 551 552 Module snd-emu10k1 553 ------------------ 554 555 Module for EMU10K1/EMU10k2 based PCI sound cards. 556 * Sound Blaster Live! 557 * Sound Blaster PCI 512 558 * Emu APS (partially supported) 559 * Sound Blaster Audigy 560 561 extin - bitmap of available external inputs for FX8010 (see bellow) 562 extout - bitmap of available external outputs for FX8010 (see bellow) 563 seq_ports - allocated sequencer ports (4 by default) 564 max_synth_voices - limit of voices used for wavetable (64 by default) 565 max_buffer_size - specifies the maximum size of wavetable/pcm buffers 566 given in MB unit. Default value is 128. 567 enable_ir - enable IR 568 569 This module supports multiple cards and autoprobe. 570 571 Input & Output configurations [extin/extout] 572 * Creative Card wo/Digital out [0x0003/0x1f03] 573 * Creative Card w/Digital out [0x0003/0x1f0f] 574 * Creative Card w/Digital CD in [0x000f/0x1f0f] 575 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3] 576 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf] 577 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf] 578 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f] 579 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f] 580 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f] 581 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff] 582 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff] 583 * Creative Card all ins and outs [0x3fff/0x7fff] 584 585 The power-management is supported. 586 587 Module snd-emu10k1x 588 ------------------- 589 590 Module for Creative Emu10k1X (SB Live Dell OEM version) 591 592 This module supports multiple cards. 593 594 Module snd-ens1370 595 ------------------ 596 597 Module for Ensoniq AudioPCI ES1370 PCI sound cards. 598 * SoundBlaster PCI 64 599 * SoundBlaster PCI 128 600 601 joystick - Enable joystick (default off) 602 603 This module supports multiple cards and autoprobe. 604 605 The power-management is supported. 606 607 Module snd-ens1371 608 ------------------ 609 610 Module for Ensoniq AudioPCI ES1371 PCI sound cards. 611 * SoundBlaster PCI 64 612 * SoundBlaster PCI 128 613 * SoundBlaster Vibra PCI 614 615 joystick_port - port # for joystick (0x200,0x208,0x210,0x218), 616 0 = disable (default), 1 = auto-detect 617 618 This module supports multiple cards and autoprobe. 619 620 The power-management is supported. 621 622 Module snd-es968 623 ---------------- 624 625 Module for sound cards based on ESS ES968 chip (PnP only). 626 627 This module supports multiple cards, PnP and autoprobe. 628 629 The power-management is supported. 630 631 Module snd-es1688 632 ----------------- 633 634 Module for ESS AudioDrive ES-1688 and ES-688 sound cards. 635 636 port - port # for ES-1688 chip (0x220,0x240,0x260) 637 fm_port - port # for OPL3 (option; share the same port as default) 638 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default) 639 irq - IRQ # for ES-1688 chip (5,7,9,10) 640 mpu_irq - IRQ # for MPU-401 port (5,7,9,10) 641 dma8 - DMA # for ES-1688 chip (0,1,3) 642 643 This module supports multiple cards and autoprobe (without MPU-401 port). 644 645 Module snd-es18xx 646 ----------------- 647 648 Module for ESS AudioDrive ES-18xx sound cards. 649 650 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 651 652 with isapnp=0, the following options are available: 653 654 port - port # for ES-18xx chip (0x220,0x240,0x260) 655 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default) 656 fm_port - port # for FM (optional, not used) 657 irq - IRQ # for ES-18xx chip (5,7,9,10) 658 dma1 - first DMA # for ES-18xx chip (0,1,3) 659 dma2 - first DMA # for ES-18xx chip (0,1,3) 660 661 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401 662 port if native ISA PnP routines are not used). 663 When dma2 is equal with dma1, the driver works as half-duplex. 664 665 The power-management is supported. 666 667 Module snd-es1938 668 ----------------- 669 670 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips. 671 672 This module supports multiple cards and autoprobe. 673 674 The power-management is supported. 675 676 Module snd-es1968 677 ----------------- 678 679 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips. 680 681 total_bufsize - total buffer size in kB (1-4096kB) 682 pcm_substreams_p - playback channels (1-8, default=2) 683 pcm_substreams_c - capture channels (1-8, default=0) 684 clock - clock (0 = auto-detection) 685 use_pm - support the power-management (0 = off, 1 = on, 686 2 = auto (default)) 687 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default)) 688 joystick - enable joystick (default off) 689 690 This module supports multiple cards and autoprobe. 691 692 The power-management is supported. 693 694 Module snd-fm801 695 ---------------- 696 697 Module for ForteMedia FM801 based PCI sound cards. 698 699 tea575x_tuner - Enable TEA575x tuner 700 - 1 = MediaForte 256-PCS 701 - 2 = MediaForte 256-PCPR 702 - 3 = MediaForte 64-PCR 703 - High 16-bits are video (radio) device number + 1 704 - example: 0x10002 (MediaForte 256-PCPR, device 1) 705 706 This module supports multiple cards and autoprobe. 707 708 The power-management is supported. 709 710 Module snd-gina20 711 ----------------- 712 713 Module for Echoaudio Gina20 714 715 This module supports multiple cards. 716 The driver requires the firmware loader support on kernel. 717 718 Module snd-gina24 719 ----------------- 720 721 Module for Echoaudio Gina24 722 723 This module supports multiple cards. 724 The driver requires the firmware loader support on kernel. 725 726 Module snd-gusclassic 727 --------------------- 728 729 Module for Gravis UltraSound Classic sound card. 730 731 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260) 732 irq - IRQ # for GF1 chip (3,5,9,11,12,15) 733 dma1 - DMA # for GF1 chip (1,3,5,6,7) 734 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable) 735 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 736 voices - GF1 voices limit (14-32) 737 pcm_voices - reserved PCM voices 738 739 This module supports multiple cards and autoprobe. 740 741 Module snd-gusextreme 742 --------------------- 743 744 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card. 745 746 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260) 747 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270) 748 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable 749 irq - IRQ # for ES-1688 chip (5,7,9,10) 750 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15) 751 mpu_irq - IRQ # for MPU-401 port (5,7,9,10) 752 dma8 - DMA # for ES-1688 chip (0,1,3) 753 dma1 - DMA # for GF1 chip (1,3,5,6,7) 754 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 755 voices - GF1 voices limit (14-32) 756 pcm_voices - reserved PCM voices 757 758 This module supports multiple cards and autoprobe (without MPU-401 port). 759 760 Module snd-gusmax 761 ----------------- 762 763 Module for Gravis UltraSound MAX sound card. 764 765 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260) 766 irq - IRQ # for GF1 chip (3,5,9,11,12,15) 767 dma1 - DMA # for GF1 chip (1,3,5,6,7) 768 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable) 769 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 770 voices - GF1 voices limit (14-32) 771 pcm_voices - reserved PCM voices 772 773 This module supports multiple cards and autoprobe. 774 775 Module snd-hda-intel 776 -------------------- 777 778 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8, ICH9, ICH10, 779 PCH, SCH), 780 ATI SB450, SB600, R600, RS600, RS690, RS780, RV610, RV620, 781 RV630, RV635, RV670, RV770, 782 VIA VT8251/VT8237A, 783 SIS966, ULI M5461 784 785 [Multiple options for each card instance] 786 model - force the model name 787 position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF) 788 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots) 789 When the bit 8 (0x100) is set, the lower 8 bits are used 790 as the "fixed" codec slots; i.e. the driver probes the 791 slots regardless what hardware reports back 792 probe_only - Only probing and no codec initialization (default=off); 793 Useful to check the initial codec status for debugging 794 bdl_pos_adj - Specifies the DMA IRQ timing delay in samples. 795 Passing -1 will make the driver to choose the appropriate 796 value based on the controller chip. 797 patch - Specifies the early "patch" files to modify the HD-audio 798 setup before initializing the codecs. This option is 799 available only when CONFIG_SND_HDA_PATCH_LOADER=y is set. 800 See HD-Audio.txt for details. 801 beep_mode - Selects the beep registration mode (0=off, 1=on, 2= 802 dynamic registration via mute switch on/off); the default 803 value is set via CONFIG_SND_HDA_INPUT_BEEP_MODE kconfig. 804 805 [Single (global) options] 806 single_cmd - Use single immediate commands to communicate with 807 codecs (for debugging only) 808 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off) 809 power_save - Automatic power-saving timeout (in second, 0 = 810 disable) 811 power_save_controller - Reset HD-audio controller in power-saving mode 812 (default = on) 813 814 This module supports multiple cards and autoprobe. 815 816 See Documentation/sound/alsa/HD-Audio.txt for more details about 817 HD-audio driver. 818 819 Each codec may have a model table for different configurations. 820 If your machine isn't listed there, the default (usually minimal) 821 configuration is set up. You can pass "model=<name>" option to 822 specify a certain model in such a case. There are different 823 models depending on the codec chip. The list of available models 824 is found in HD-Audio-Models.txt 825 826 The model name "genric" is treated as a special case. When this 827 model is given, the driver uses the generic codec parser without 828 "codec-patch". It's sometimes good for testing and debugging. 829 830 If the default configuration doesn't work and one of the above 831 matches with your device, report it together with alsa-info.sh 832 output (with --no-upload option) to kernel bugzilla or alsa-devel 833 ML (see the section "Links and Addresses"). 834 835 power_save and power_save_controller options are for power-saving 836 mode. See powersave.txt for details. 837 838 Note 2: If you get click noises on output, try the module option 839 position_fix=1 or 2. position_fix=1 will use the SD_LPIB 840 register value without FIFO size correction as the current 841 DMA pointer. position_fix=2 will make the driver to use 842 the position buffer instead of reading SD_LPIB register. 843 (Usually SD_LPIB register is more accurate than the 844 position buffer.) 845 846 NB: If you get many "azx_get_response timeout" messages at 847 loading, it's likely a problem of interrupts (e.g. ACPI irq 848 routing). Try to boot with options like "pci=noacpi". Also, you 849 can try "single_cmd=1" module option. This will switch the 850 communication method between HDA controller and codecs to the 851 single immediate commands instead of CORB/RIRB. Basically, the 852 single command mode is provided only for BIOS, and you won't get 853 unsolicited events, too. But, at least, this works independently 854 from the irq. Remember this is a last resort, and should be 855 avoided as much as possible... 856 857 MORE NOTES ON "azx_get_response timeout" PROBLEMS: 858 On some hardwares, you may need to add a proper probe_mask option 859 to avoid the "azx_get_response timeout" problem above, instead. 860 This occurs when the access to non-existing or non-working codec slot 861 (likely a modem one) causes a stall of the communication via HD-audio 862 bus. You can see which codec slots are probed by enabling 863 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec 864 proc files. Then limit the slots to probe by probe_mask option. 865 For example, probe_mask=1 means to probe only the first slot, and 866 probe_mask=4 means only the third slot. 867 868 The power-management is supported. 869 870 Module snd-hdsp 871 --------------- 872 873 Module for RME Hammerfall DSP audio interface(s) 874 875 This module supports multiple cards. 876 877 Note: The firmware data can be automatically loaded via hotplug 878 when CONFIG_FW_LOADER is set. Otherwise, you need to load 879 the firmware via hdsploader utility included in alsa-tools 880 package. 881 The firmware data is found in alsa-firmware package. 882 883 Note: snd-page-alloc module does the job which snd-hammerfall-mem 884 module did formerly. It will allocate the buffers in advance 885 when any HDSP cards are found. To make the buffer 886 allocation sure, load snd-page-alloc module in the early 887 stage of boot sequence. See "Early Buffer Allocation" 888 section. 889 890 Module snd-hdspm 891 ---------------- 892 893 Module for RME HDSP MADI board. 894 895 precise_ptr - Enable precise pointer, or disable. 896 line_outs_monitor - Send playback streams to analog outs by default. 897 enable_monitor - Enable Analog Out on Channel 63/64 by default. 898 899 See hdspm.txt for details. 900 901 Module snd-hifier 902 ----------------- 903 904 Module for the MediaTek/TempoTec HiFier Fantasia sound card. 905 906 This module supports autoprobe and multiple cards. 907 908 Module snd-ice1712 909 ------------------ 910 911 Module for Envy24 (ICE1712) based PCI sound cards. 912 * MidiMan M Audio Delta 1010 913 * MidiMan M Audio Delta 1010LT 914 * MidiMan M Audio Delta DiO 2496 915 * MidiMan M Audio Delta 66 916 * MidiMan M Audio Delta 44 917 * MidiMan M Audio Delta 410 918 * MidiMan M Audio Audiophile 2496 919 * TerraTec EWS 88MT 920 * TerraTec EWS 88D 921 * TerraTec EWX 24/96 922 * TerraTec DMX 6Fire 923 * TerraTec Phase 88 924 * Hoontech SoundTrack DSP 24 925 * Hoontech SoundTrack DSP 24 Value 926 * Hoontech SoundTrack DSP 24 Media 7.1 927 * Event Electronics, EZ8 928 * Digigram VX442 929 * Lionstracs, Mediastaton 930 * Terrasoniq TS 88 931 932 model - Use the given board model, one of the following: 933 delta1010, dio2496, delta66, delta44, audiophile, delta410, 934 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d, 935 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8, 936 phase88, mediastation 937 omni - Omni I/O support for MidiMan M-Audio Delta44/66 938 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver) 939 in msec resolution, default value is 500 (0.5 sec) 940 941 This module supports multiple cards and autoprobe. Note: The consumer part 942 is not used with all Envy24 based cards (for example in the MidiMan Delta 943 serie). 944 945 Note: The supported board is detected by reading EEPROM or PCI 946 SSID (if EEPROM isn't available). You can override the 947 model by passing "model" module option in case that the 948 driver isn't configured properly or you want to try another 949 type for testing. 950 951 Module snd-ice1724 952 ------------------ 953 954 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards. 955 * MidiMan M Audio Revolution 5.1 956 * MidiMan M Audio Revolution 7.1 957 * MidiMan M Audio Audiophile 192 958 * AMP Ltd AUDIO2000 959 * TerraTec Aureon 5.1 Sky 960 * TerraTec Aureon 7.1 Space 961 * TerraTec Aureon 7.1 Universe 962 * TerraTec Phase 22 963 * TerraTec Phase 28 964 * AudioTrak Prodigy 7.1 965 * AudioTrak Prodigy 7.1 LT 966 * AudioTrak Prodigy 7.1 XT 967 * AudioTrak Prodigy 7.1 HIFI 968 * AudioTrak Prodigy 7.1 HD2 969 * AudioTrak Prodigy 192 970 * Pontis MS300 971 * Albatron K8X800 Pro II 972 * Chaintech ZNF3-150 973 * Chaintech ZNF3-250 974 * Chaintech 9CJS 975 * Chaintech AV-710 976 * Shuttle SN25P 977 * Onkyo SE-90PCI 978 * Onkyo SE-200PCI 979 * ESI Juli@ 980 * ESI Maya44 981 * Hercules Fortissimo IV 982 * EGO-SYS WaveTerminal 192M 983 984 model - Use the given board model, one of the following: 985 revo51, revo71, amp2000, prodigy71, prodigy71lt, 986 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192, 987 juli, aureon51, aureon71, universe, ap192, k8x800, 988 phase22, phase28, ms300, av710, se200pci, se90pci, 989 fortissimo4, sn25p, WT192M, maya44 990 991 This module supports multiple cards and autoprobe. 992 993 Note: The supported board is detected by reading EEPROM or PCI 994 SSID (if EEPROM isn't available). You can override the 995 model by passing "model" module option in case that the 996 driver isn't configured properly or you want to try another 997 type for testing. 998 999 Module snd-indigo 1000 ----------------- 1001 1002 Module for Echoaudio Indigo 1003 1004 This module supports multiple cards. 1005 The driver requires the firmware loader support on kernel. 1006 1007 Module snd-indigodj 1008 ------------------- 1009 1010 Module for Echoaudio Indigo DJ 1011 1012 This module supports multiple cards. 1013 The driver requires the firmware loader support on kernel. 1014 1015 Module snd-indigoio 1016 ------------------- 1017 1018 Module for Echoaudio Indigo IO 1019 1020 This module supports multiple cards. 1021 The driver requires the firmware loader support on kernel. 1022 1023 Module snd-intel8x0 1024 ------------------- 1025 1026 Module for AC'97 motherboards from Intel and compatibles. 1027 * Intel i810/810E, i815, i820, i830, i84x, MX440 1028 ICH5, ICH6, ICH7, 6300ESB, ESB2 1029 * SiS 7012 (SiS 735) 1030 * NVidia NForce, NForce2, NForce3, MCP04, CK804 1031 CK8, CK8S, MCP501 1032 * AMD AMD768, AMD8111 1033 * ALi m5455 1034 1035 ac97_clock - AC'97 codec clock base (0 = auto-detect) 1036 ac97_quirk - AC'97 workaround for strange hardware 1037 See "AC97 Quirk Option" section below. 1038 buggy_irq - Enable workaround for buggy interrupts on some 1039 motherboards (default yes on nForce chips, 1040 otherwise off) 1041 buggy_semaphore - Enable workaround for hardwares with buggy 1042 semaphores (e.g. on some ASUS laptops) 1043 (default off) 1044 spdif_aclink - Use S/PDIF over AC-link instead of direct connection 1045 from the controller chip 1046 (0 = off, 1 = on, -1 = default) 1047 1048 This module supports one chip and autoprobe. 1049 1050 Note: the latest driver supports auto-detection of chip clock. 1051 if you still encounter too fast playback, specify the clock 1052 explicitly via the module option "ac97_clock=41194". 1053 1054 Joystick/MIDI ports are not supported by this driver. If your 1055 motherboard has these devices, use the ns558 or snd-mpu401 1056 modules, respectively. 1057 1058 The power-management is supported. 1059 1060 Module snd-intel8x0m 1061 -------------------- 1062 1063 Module for Intel ICH (i8x0) chipset MC97 modems. 1064 * Intel i810/810E, i815, i820, i830, i84x, MX440 1065 ICH5, ICH6, ICH7 1066 * SiS 7013 (SiS 735) 1067 * NVidia NForce, NForce2, NForce2s, NForce3 1068 * AMD AMD8111 1069 * ALi m5455 1070 1071 ac97_clock - AC'97 codec clock base (0 = auto-detect) 1072 1073 This module supports one card and autoprobe. 1074 1075 Note: The default index value of this module is -2, i.e. the first 1076 slot is excluded. 1077 1078 The power-management is supported. 1079 1080 Module snd-interwave 1081 -------------------- 1082 1083 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32 1084 and other sound cards based on AMD InterWave (tm) chip. 1085 1086 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 1087 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default) 1088 pcm_voices - reserved PCM voices for the synthesizer (default 2) 1089 effect - 1 = InterWave effects enable (default 0); 1090 requires 8 voices 1091 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1092 1093 with isapnp=0, the following options are available: 1094 1095 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260) 1096 irq - IRQ # for InterWave chip (3,5,9,11,12,15) 1097 dma1 - DMA # for InterWave chip (0,1,3,5,6,7) 1098 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable) 1099 1100 This module supports multiple cards, autoprobe and ISA PnP. 1101 1102 Module snd-interwave-stb 1103 ------------------------ 1104 1105 Module for UltraSound 32-Pro (sound card from STB used by Compaq) 1106 and other sound cards based on AMD InterWave (tm) chip with TEA6330T 1107 circuit for extended control of bass, treble and master volume. 1108 1109 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 1110 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default) 1111 pcm_voices - reserved PCM voices for the synthesizer (default 2) 1112 effect - 1 = InterWave effects enable (default 0); 1113 requires 8 voices 1114 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1115 1116 with isapnp=0, the following options are available: 1117 1118 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260) 1119 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380) 1120 irq - IRQ # for InterWave chip (3,5,9,11,12,15) 1121 dma1 - DMA # for InterWave chip (0,1,3,5,6,7) 1122 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable) 1123 1124 This module supports multiple cards, autoprobe and ISA PnP. 1125 1126 Module snd-korg1212 1127 ------------------- 1128 1129 Module for Korg 1212 IO PCI card 1130 1131 This module supports multiple cards. 1132 1133 Module snd-layla20 1134 ------------------ 1135 1136 Module for Echoaudio Layla20 1137 1138 This module supports multiple cards. 1139 The driver requires the firmware loader support on kernel. 1140 1141 Module snd-layla24 1142 ------------------ 1143 1144 Module for Echoaudio Layla24 1145 1146 This module supports multiple cards. 1147 The driver requires the firmware loader support on kernel. 1148 1149 Module snd-lx6464es 1150 ------------------- 1151 1152 Module for Digigram LX6464ES boards 1153 1154 This module supports multiple cards. 1155 1156 Module snd-maestro3 1157 ------------------- 1158 1159 Module for Allegro/Maestro3 chips 1160 1161 external_amp - enable external amp (enabled by default) 1162 amp_gpio - GPIO pin number for external amp (0-15) or 1163 -1 for default pin (8 for allegro, 1 for 1164 others) 1165 1166 This module supports autoprobe and multiple chips. 1167 1168 Note: the binding of amplifier is dependent on hardware. 1169 If there is no sound even though all channels are unmuted, try to 1170 specify other gpio connection via amp_gpio option. 1171 For example, a Panasonic notebook might need "amp_gpio=0x0d" 1172 option. 1173 1174 The power-management is supported. 1175 1176 Module snd-mia 1177 --------------- 1178 1179 Module for Echoaudio Mia 1180 1181 This module supports multiple cards. 1182 The driver requires the firmware loader support on kernel. 1183 1184 Module snd-miro 1185 --------------- 1186 1187 Module for Miro soundcards: miroSOUND PCM 1 pro, 1188 miroSOUND PCM 12, 1189 miroSOUND PCM 20 Radio. 1190 1191 port - Port # (0x530,0x604,0xe80,0xf40) 1192 irq - IRQ # (5,7,9,10,11) 1193 dma1 - 1st dma # (0,1,3) 1194 dma2 - 2nd dma # (0,1) 1195 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330) 1196 mpu_irq - MPU-401 irq # (5,7,9,10) 1197 fm_port - FM Port # (0x388) 1198 wss - enable WSS mode 1199 ide - enable onboard ide support 1200 1201 Module snd-mixart 1202 ----------------- 1203 1204 Module for Digigram miXart8 sound cards. 1205 1206 This module supports multiple cards. 1207 Note: One miXart8 board will be represented as 4 alsa cards. 1208 See MIXART.txt for details. 1209 1210 When the driver is compiled as a module and the hotplug firmware 1211 is supported, the firmware data is loaded via hotplug automatically. 1212 Install the necessary firmware files in alsa-firmware package. 1213 When no hotplug fw loader is available, you need to load the 1214 firmware via mixartloader utility in alsa-tools package. 1215 1216 Module snd-mona 1217 --------------- 1218 1219 Module for Echoaudio Mona 1220 1221 This module supports multiple cards. 1222 The driver requires the firmware loader support on kernel. 1223 1224 Module snd-mpu401 1225 ----------------- 1226 1227 Module for MPU-401 UART devices. 1228 1229 port - port number or -1 (disable) 1230 irq - IRQ number or -1 (disable) 1231 pnp - PnP detection - 0 = disable, 1 = enable (default) 1232 1233 This module supports multiple devices and PnP. 1234 1235 Module snd-msnd-classic 1236 ----------------------- 1237 1238 Module for Turtle Beach MultiSound Classic, Tahiti or Monterey 1239 soundcards. 1240 1241 io - Port # for msnd-classic card 1242 irq - IRQ # for msnd-classic card 1243 mem - Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000, 1244 0xe0000 or 0xe8000) 1245 write_ndelay - enable write ndelay (default = 1) 1246 calibrate_signal - calibrate signal (default = 0) 1247 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1248 digital - Digital daughterboard present (default = 0) 1249 cfg - Config port (0x250, 0x260 or 0x270) default = PnP 1250 reset - Reset all devices 1251 mpu_io - MPU401 I/O port 1252 mpu_irq - MPU401 irq# 1253 ide_io0 - IDE port #0 1254 ide_io1 - IDE port #1 1255 ide_irq - IDE irq# 1256 joystick_io - Joystick I/O port 1257 1258 The driver requires firmware files "turtlebeach/msndinit.bin" and 1259 "turtlebeach/msndperm.bin" in the proper firmware directory. 1260 1261 See Documentation/sound/oss/MultiSound for important information 1262 about this driver. Note that it has been discontinued, but the 1263 Voyetra Turtle Beach knowledge base entry for it is still available 1264 at 1265 http://www.turtlebeach.com/site/kb_ftp/790.asp 1266 1267 Module snd-msnd-pinnacle 1268 ------------------------ 1269 1270 Module for Turtle Beach MultiSound Pinnacle/Fiji soundcards. 1271 1272 io - Port # for pinnacle/fiji card 1273 irq - IRQ # for pinnalce/fiji card 1274 mem - Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000, 1275 0xe0000 or 0xe8000) 1276 write_ndelay - enable write ndelay (default = 1) 1277 calibrate_signal - calibrate signal (default = 0) 1278 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1279 1280 The driver requires firmware files "turtlebeach/pndspini.bin" and 1281 "turtlebeach/pndsperm.bin" in the proper firmware directory. 1282 1283 Module snd-mtpav 1284 ---------------- 1285 1286 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel 1287 port). 1288 1289 port - I/O port # for MTPAV (0x378,0x278, default=0x378) 1290 irq - IRQ # for MTPAV (7,5, default=7) 1291 hwports - number of supported hardware ports, default=8. 1292 1293 Module supports only 1 card. This module has no enable option. 1294 1295 Module snd-mts64 1296 ---------------- 1297 1298 Module for Ego Systems (ESI) Miditerminal 4140 1299 1300 This module supports multiple devices. 1301 Requires parport (CONFIG_PARPORT). 1302 1303 Module snd-nm256 1304 ---------------- 1305 1306 Module for NeoMagic NM256AV/ZX chips 1307 1308 playback_bufsize - max playback frame size in kB (4-128kB) 1309 capture_bufsize - max capture frame size in kB (4-128kB) 1310 force_ac97 - 0 or 1 (disabled by default) 1311 buffer_top - specify buffer top address 1312 use_cache - 0 or 1 (disabled by default) 1313 vaio_hack - alias buffer_top=0x25a800 1314 reset_workaround - enable AC97 RESET workaround for some laptops 1315 reset_workaround2 - enable extended AC97 RESET workaround for some 1316 other laptops 1317 1318 This module supports one chip and autoprobe. 1319 1320 The power-management is supported. 1321 1322 Note: on some notebooks the buffer address cannot be detected 1323 automatically, or causes hang-up during initialization. 1324 In such a case, specify the buffer top address explicitly via 1325 the buffer_top option. 1326 For example, 1327 Sony F250: buffer_top=0x25a800 1328 Sony F270: buffer_top=0x272800 1329 The driver supports only ac97 codec. It's possible to force 1330 to initialize/use ac97 although it's not detected. In such a 1331 case, use force_ac97=1 option - but *NO* guarantee whether it 1332 works! 1333 1334 Note: The NM256 chip can be linked internally with non-AC97 1335 codecs. This driver supports only the AC97 codec, and won't work 1336 with machines with other (most likely CS423x or OPL3SAx) chips, 1337 even though the device is detected in lspci. In such a case, try 1338 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP 1339 but some doesn't have ISA PnP. You'll need to specify isapnp=0 1340 and proper hardware parameters in the case without ISA PnP. 1341 1342 Note: some laptops need a workaround for AC97 RESET. For the 1343 known hardware like Dell Latitude LS and Sony PCG-F305, this 1344 workaround is enabled automatically. For other laptops with a 1345 hard freeze, you can try reset_workaround=1 option. 1346 1347 Note: Dell Latitude CSx laptops have another problem regarding 1348 AC97 RESET. On these laptops, reset_workaround2 option is 1349 turned on as default. This option is worth to try if the 1350 previous reset_workaround option doesn't help. 1351 1352 Note: This driver is really crappy. It's a porting from the 1353 OSS driver, which is a result of black-magic reverse engineering. 1354 The detection of codec will fail if the driver is loaded *after* 1355 X-server as described above. You might be able to force to load 1356 the module, but it may result in hang-up. Hence, make sure that 1357 you load this module *before* X if you encounter this kind of 1358 problem. 1359 1360 Module snd-opl3sa2 1361 ------------------ 1362 1363 Module for Yamaha OPL3-SA2/SA3 sound cards. 1364 1365 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1366 1367 with isapnp=0, the following options are available: 1368 1369 port - control port # for OPL3-SA chip (0x370) 1370 sb_port - SB port # for OPL3-SA chip (0x220,0x240) 1371 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604) 1372 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable 1373 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable 1374 irq - IRQ # for OPL3-SA chip (5,7,9,10) 1375 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3) 1376 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable 1377 1378 This module supports multiple cards and ISA PnP. It does not support 1379 autoprobe (if ISA PnP is not used) thus all ports must be specified!!! 1380 1381 The power-management is supported. 1382 1383 Module snd-opti92x-ad1848 1384 ------------------------- 1385 1386 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips. 1387 Module works with OAK Mozart cards as well. 1388 1389 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1390 1391 with isapnp=0, the following options are available: 1392 1393 port - port # for WSS chip (0x530,0xe80,0xf40,0x604) 1394 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330) 1395 fm_port - port # for OPL3 device (0x388) 1396 irq - IRQ # for WSS chip (5,7,9,10,11) 1397 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10) 1398 dma1 - first DMA # for WSS chip (0,1,3) 1399 1400 This module supports only one card, autoprobe and PnP. 1401 1402 Module snd-opti92x-cs4231 1403 ------------------------- 1404 1405 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips. 1406 1407 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1408 1409 with isapnp=0, the following options are available: 1410 1411 port - port # for WSS chip (0x530,0xe80,0xf40,0x604) 1412 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330) 1413 fm_port - port # for OPL3 device (0x388) 1414 irq - IRQ # for WSS chip (5,7,9,10,11) 1415 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10) 1416 dma1 - first DMA # for WSS chip (0,1,3) 1417 dma2 - second DMA # for WSS chip (0,1,3) 1418 1419 This module supports only one card, autoprobe and PnP. 1420 1421 Module snd-opti93x 1422 ------------------ 1423 1424 Module for sound cards based on OPTi 82c93x chips. 1425 1426 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1427 1428 with isapnp=0, the following options are available: 1429 1430 port - port # for WSS chip (0x530,0xe80,0xf40,0x604) 1431 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330) 1432 fm_port - port # for OPL3 device (0x388) 1433 irq - IRQ # for WSS chip (5,7,9,10,11) 1434 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10) 1435 dma1 - first DMA # for WSS chip (0,1,3) 1436 dma2 - second DMA # for WSS chip (0,1,3) 1437 1438 This module supports only one card, autoprobe and PnP. 1439 1440 Module snd-oxygen 1441 ----------------- 1442 1443 Module for sound cards based on the C-Media CMI8788 chip: 1444 * Asound A-8788 1445 * AuzenTech X-Meridian 1446 * Bgears b-Enspirer 1447 * Club3D Theatron DTS 1448 * HT-Omega Claro (plus) 1449 * HT-Omega Claro halo (XT) 1450 * Razer Barracuda AC-1 1451 * Sondigo Inferno 1452 1453 This module supports autoprobe and multiple cards. 1454 1455 Module snd-pcsp 1456 ----------------- 1457 1458 Module for internal PC-Speaker. 1459 1460 nopcm - Disable PC-Speaker PCM sound. Only beeps remain. 1461 nforce_wa - enable NForce chipset workaround. Expect bad sound. 1462 1463 This module supports system beeps, some kind of PCM playback and 1464 even a few mixer controls. 1465 1466 Module snd-pcxhr 1467 ---------------- 1468 1469 Module for Digigram PCXHR boards 1470 1471 This module supports multiple cards. 1472 1473 Module snd-portman2x4 1474 --------------------- 1475 1476 Module for Midiman Portman 2x4 parallel port MIDI interface 1477 1478 This module supports multiple cards. 1479 1480 Module snd-powermac (on ppc only) 1481 --------------------------------- 1482 1483 Module for PowerMac, iMac and iBook on-board soundchips 1484 1485 enable_beep - enable beep using PCM (enabled as default) 1486 1487 Module supports autoprobe a chip. 1488 1489 Note: the driver may have problems regarding endianess. 1490 1491 The power-management is supported. 1492 1493 Module snd-pxa2xx-ac97 (on arm only) 1494 ------------------------------------ 1495 1496 Module for AC97 driver for the Intel PXA2xx chip 1497 1498 For ARM architecture only. 1499 1500 The power-management is supported. 1501 1502 Module snd-riptide 1503 ------------------ 1504 1505 Module for Conexant Riptide chip 1506 1507 joystick_port - Joystick port # (default: 0x200) 1508 mpu_port - MPU401 port # (default: 0x330) 1509 opl3_port - OPL3 port # (default: 0x388) 1510 1511 This module supports multiple cards. 1512 The driver requires the firmware loader support on kernel. 1513 You need to install the firmware file "riptide.hex" to the standard 1514 firmware path (e.g. /lib/firmware). 1515 1516 Module snd-rme32 1517 ---------------- 1518 1519 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32, 1520 Prodif96 and Prodif Gold) sound cards. 1521 1522 This module supports multiple cards. 1523 1524 Module snd-rme96 1525 ---------------- 1526 1527 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards. 1528 1529 This module supports multiple cards. 1530 1531 Module snd-rme9652 1532 ------------------ 1533 1534 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards. 1535 1536 precise_ptr - Enable precise pointer (doesn't work reliably). 1537 (default = 0) 1538 1539 This module supports multiple cards. 1540 1541 Note: snd-page-alloc module does the job which snd-hammerfall-mem 1542 module did formerly. It will allocate the buffers in advance 1543 when any RME9652 cards are found. To make the buffer 1544 allocation sure, load snd-page-alloc module in the early 1545 stage of boot sequence. See "Early Buffer Allocation" 1546 section. 1547 1548 Module snd-sa11xx-uda1341 (on arm only) 1549 --------------------------------------- 1550 1551 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card. 1552 1553 Module supports only one card. 1554 Module has no enable and index options. 1555 1556 The power-management is supported. 1557 1558 Module snd-sb8 1559 -------------- 1560 1561 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0, 1562 SoundBlaster 2.0, 1563 SoundBlaster Pro 1564 1565 port - port # for SB DSP chip (0x220,0x240,0x260) 1566 irq - IRQ # for SB DSP chip (5,7,9,10) 1567 dma8 - DMA # for SB DSP chip (1,3) 1568 1569 This module supports multiple cards and autoprobe. 1570 1571 The power-management is supported. 1572 1573 Module snd-sb16 and snd-sbawe 1574 ----------------------------- 1575 1576 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP), 1577 SoundBlaster AWE 32 (PnP), 1578 SoundBlaster AWE 64 PnP 1579 1580 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default) 1581 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable 1582 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1583 1584 with isapnp=0, the following options are available: 1585 1586 port - port # for SB DSP 4.x chip (0x220,0x240,0x260) 1587 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable 1588 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660) 1589 (snd-sbawe module only) 1590 irq - IRQ # for SB DSP 4.x chip (5,7,9,10) 1591 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3) 1592 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7) 1593 1594 This module supports multiple cards, autoprobe and ISA PnP. 1595 1596 Note: To use Vibra16X cards in 16-bit half duplex mode, you must 1597 disable 16bit DMA with dma16 = -1 module parameter. 1598 Also, all Sound Blaster 16 type cards can operate in 16-bit 1599 half duplex mode through 8-bit DMA channel by disabling their 1600 16-bit DMA channel. 1601 1602 The power-management is supported. 1603 1604 Module snd-sc6000 1605 ----------------- 1606 1607 Module for Gallant SC-6000 soundcard and later models: SC-6600 1608 and SC-7000. 1609 1610 port - Port # (0x220 or 0x240) 1611 mss_port - MSS Port # (0x530 or 0xe80) 1612 irq - IRQ # (5,7,9,10,11) 1613 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq 1614 dma - DMA # (1,3,0) 1615 joystick - Enable gameport - 0 = disable (default), 1 = enable 1616 1617 This module supports multiple cards. 1618 1619 This card is also known as Audio Excel DSP 16 or Zoltrix AV302. 1620 1621 Module snd-sgalaxy 1622 ------------------ 1623 1624 Module for Aztech Sound Galaxy sound card. 1625 1626 sbport - Port # for SB16 interface (0x220,0x240) 1627 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604) 1628 irq - IRQ # (7,9,10,11) 1629 dma1 - DMA # 1630 1631 This module supports multiple cards. 1632 1633 The power-management is supported. 1634 1635 Module snd-sscape 1636 ----------------- 1637 1638 Module for ENSONIQ SoundScape cards. 1639 1640 port - Port # (PnP setup) 1641 wss_port - WSS Port # (PnP setup) 1642 irq - IRQ # (PnP setup) 1643 mpu_irq - MPU-401 IRQ # (PnP setup) 1644 dma - DMA # (PnP setup) 1645 dma2 - 2nd DMA # (PnP setup, -1 to disable) 1646 joystick - Enable gameport - 0 = disable (default), 1 = enable 1647 1648 This module supports multiple cards. 1649 1650 The driver requires the firmware loader support on kernel. 1651 1652 Module snd-sun-amd7930 (on sparc only) 1653 -------------------------------------- 1654 1655 Module for AMD7930 sound chips found on Sparcs. 1656 1657 This module supports multiple cards. 1658 1659 Module snd-sun-cs4231 (on sparc only) 1660 ------------------------------------- 1661 1662 Module for CS4231 sound chips found on Sparcs. 1663 1664 This module supports multiple cards. 1665 1666 Module snd-sun-dbri (on sparc only) 1667 ----------------------------------- 1668 1669 Module for DBRI sound chips found on Sparcs. 1670 1671 This module supports multiple cards. 1672 1673 Module snd-wavefront 1674 -------------------- 1675 1676 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards. 1677 1678 use_cs4232_midi - Use CS4232 MPU-401 interface 1679 (inaccessibly located inside your computer) 1680 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1681 1682 with isapnp=0, the following options are available: 1683 1684 cs4232_pcm_port - Port # for CS4232 PCM interface. 1685 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15). 1686 cs4232_mpu_port - Port # for CS4232 MPU-401 interface. 1687 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15). 1688 ics2115_port - Port # for ICS2115 1689 ics2115_irq - IRQ # for ICS2115 1690 fm_port - FM OPL-3 Port # 1691 dma1 - DMA1 # for CS4232 PCM interface. 1692 dma2 - DMA2 # for CS4232 PCM interface. 1693 1694 The below are options for wavefront_synth features: 1695 wf_raw - Assume that we need to boot the OS (default:no) 1696 If yes, then during driver loading, the state of the board is 1697 ignored, and we reset the board and load the firmware anyway. 1698 fx_raw - Assume that the FX process needs help (default:yes) 1699 If false, we'll leave the FX processor in whatever state it is 1700 when the driver is loaded. The default is to download the 1701 microprogram and associated coefficients to set it up for 1702 "default" operation, whatever that means. 1703 debug_default - Debug parameters for card initialization 1704 wait_usecs - How long to wait without sleeping, usecs 1705 (default:150) 1706 This magic number seems to give pretty optimal throughput 1707 based on my limited experimentation. 1708 If you want to play around with it and find a better value, be 1709 my guest. Remember, the idea is to get a number that causes us 1710 to just busy wait for as many WaveFront commands as possible, 1711 without coming up with a number so large that we hog the whole 1712 CPU. 1713 Specifically, with this number, out of about 134,000 status 1714 waits, only about 250 result in a sleep. 1715 sleep_interval - How long to sleep when waiting for reply 1716 (default: 100) 1717 sleep_tries - How many times to try sleeping during a wait 1718 (default: 50) 1719 ospath - Pathname to processed ICS2115 OS firmware 1720 (default:wavefront.os) 1721 The path name of the ISC2115 OS firmware. In the recent 1722 version, it's handled via firmware loader framework, so it 1723 must be installed in the proper path, typically, 1724 /lib/firmware. 1725 reset_time - How long to wait for a reset to take effect 1726 (default:2) 1727 ramcheck_time - How many seconds to wait for the RAM test 1728 (default:20) 1729 osrun_time - How many seconds to wait for the ICS2115 OS 1730 (default:10) 1731 1732 This module supports multiple cards and ISA PnP. 1733 1734 Note: the firmware file "wavefront.os" was located in the earlier 1735 version in /etc. Now it's loaded via firmware loader, and 1736 must be in the proper firmware path, such as /lib/firmware. 1737 Copy (or symlink) the file appropriately if you get an error 1738 regarding firmware downloading after upgrading the kernel. 1739 1740 Module snd-sonicvibes 1741 --------------------- 1742 1743 Module for S3 SonicVibes PCI sound cards. 1744 * PINE Schubert 32 PCI 1745 1746 reverb - Reverb Enable - 1 = enable, 0 = disable (default) 1747 - SoundCard must have onboard SRAM for this. 1748 mge - Mic Gain Enable - 1 = enable, 0 = disable (default) 1749 1750 This module supports multiple cards and autoprobe. 1751 1752 Module snd-serial-u16550 1753 ------------------------ 1754 1755 Module for UART16550A serial MIDI ports. 1756 1757 port - port # for UART16550A chip 1758 irq - IRQ # for UART16550A chip, -1 = poll mode 1759 speed - speed in bauds (9600,19200,38400,57600,115200) 1760 38400 = default 1761 base - base for divisor in bauds (57600,115200,230400,460800) 1762 115200 = default 1763 outs - number of MIDI ports in a serial port (1-4) 1764 1 = default 1765 adaptor - Type of adaptor. 1766 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A, 1767 3 = MS-124W M/B, 4 = Generic 1768 1769 This module supports multiple cards. This module does not support autoprobe 1770 thus the main port must be specified!!! Other options are optional. 1771 1772 Module snd-trident 1773 ------------------ 1774 1775 Module for Trident 4DWave DX/NX sound cards. 1776 * Best Union Miss Melody 4DWave PCI 1777 * HIS 4DWave PCI 1778 * Warpspeed ONSpeed 4DWave PCI 1779 * AzTech PCI 64-Q3D 1780 * Addonics SV 750 1781 * CHIC True Sound 4Dwave 1782 * Shark Predator4D-PCI 1783 * Jaton SonicWave 4D 1784 * SiS SI7018 PCI Audio 1785 * Hoontech SoundTrack Digital 4DWave NX 1786 1787 pcm_channels - max channels (voices) reserved for PCM 1788 wavetable_size - max wavetable size in kB (4-?kb) 1789 1790 This module supports multiple cards and autoprobe. 1791 1792 The power-management is supported. 1793 1794 Module snd-usb-audio 1795 -------------------- 1796 1797 Module for USB audio and USB MIDI devices. 1798 1799 vid - Vendor ID for the device (optional) 1800 pid - Product ID for the device (optional) 1801 nrpacks - Max. number of packets per URB (default: 8) 1802 async_unlink - Use async unlink mode (default: yes) 1803 device_setup - Device specific magic number (optional) 1804 - Influence depends on the device 1805 - Default: 0x0000 1806 ignore_ctl_error - Ignore any USB-controller regarding mixer 1807 interface (default: no) 1808 1809 This module supports multiple devices, autoprobe and hotplugging. 1810 1811 NB: nrpacks parameter can be modified dynamically via sysfs. 1812 Don't put the value over 20. Changing via sysfs has no sanity 1813 check. 1814 NB: async_unlink=0 would cause Oops. It remains just for 1815 debugging purpose (if any). 1816 NB: ignore_ctl_error=1 may help when you get an error at accessing 1817 the mixer element such as URB error -22. This happens on some 1818 buggy USB device or the controller. 1819 1820 Module snd-usb-caiaq 1821 -------------------- 1822 1823 Module for caiaq UB audio interfaces, 1824 * Native Instruments RigKontrol2 1825 * Native Instruments Kore Controller 1826 * Native Instruments Audio Kontrol 1 1827 * Native Instruments Audio 8 DJ 1828 1829 This module supports multiple devices, autoprobe and hotplugging. 1830 1831 Module snd-usb-usx2y 1832 -------------------- 1833 1834 Module for Tascam USB US-122, US-224 and US-428 devices. 1835 1836 This module supports multiple devices, autoprobe and hotplugging. 1837 1838 Note: you need to load the firmware via usx2yloader utility included 1839 in alsa-tools and alsa-firmware packages. 1840 1841 Module snd-via82xx 1842 ------------------ 1843 1844 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233, 1845 8233A, 8233C, 8235, 8237 (south) bridge. 1846 1847 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup 1848 [VIA686A/686B only] 1849 joystick - Enable joystick (default off) [VIA686A/686B only] 1850 ac97_clock - AC'97 codec clock base (default 48000Hz) 1851 dxs_support - support DXS channels, 1852 0 = auto (default), 1 = enable, 2 = disable, 1853 3 = 48k only, 4 = no VRA, 5 = enable any sample 1854 rate and different sample rates on different 1855 channels 1856 [VIA8233/C, 8235, 8237 only] 1857 ac97_quirk - AC'97 workaround for strange hardware 1858 See "AC97 Quirk Option" section below. 1859 1860 This module supports one chip and autoprobe. 1861 1862 Note: on some SMP motherboards like MSI 694D the interrupts might 1863 not be generated properly. In such a case, please try to 1864 set the SMP (or MPS) version on BIOS to 1.1 instead of 1865 default value 1.4. Then the interrupt number will be 1866 assigned under 15. You might also upgrade your BIOS. 1867 1868 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound) 1869 channels as the first PCM. On these channels, up to 4 1870 streams can be played at the same time, and the controller 1871 can perform sample rate conversion with separate rates for 1872 each channel. 1873 As default (dxs_support = 0), 48k fixed rate is chosen 1874 except for the known devices since the output is often 1875 noisy except for 48k on some mother boards due to the 1876 bug of BIOS. 1877 Please try once dxs_support=5 and if it works on other 1878 sample rates (e.g. 44.1kHz of mp3 playback), please let us 1879 know the PCI subsystem vendor/device id's (output of 1880 "lspci -nv"). 1881 If dxs_support=5 does not work, try dxs_support=4; if it 1882 doesn't work too, try dxs_support=1. (dxs_support=1 is 1883 usually for old motherboards. The correct implemented 1884 board should work with 4 or 5.) If it still doesn't 1885 work and the default setting is ok, dxs_support=3 is the 1886 right choice. If the default setting doesn't work at all, 1887 try dxs_support=2 to disable the DXS channels. 1888 In any cases, please let us know the result and the 1889 subsystem vendor/device ids. See "Links and Addresses" 1890 below. 1891 1892 Note: for the MPU401 on VIA823x, use snd-mpu401 driver 1893 additionally. The mpu_port option is for VIA686 chips only. 1894 1895 The power-management is supported. 1896 1897 Module snd-via82xx-modem 1898 ------------------------ 1899 1900 Module for VIA82xx AC97 modem 1901 1902 ac97_clock - AC'97 codec clock base (default 48000Hz) 1903 1904 This module supports one card and autoprobe. 1905 1906 Note: The default index value of this module is -2, i.e. the first 1907 slot is excluded. 1908 1909 The power-management is supported. 1910 1911 Module snd-virmidi 1912 ------------------ 1913 1914 Module for virtual rawmidi devices. 1915 This module creates virtual rawmidi devices which communicate 1916 to the corresponding ALSA sequencer ports. 1917 1918 midi_devs - MIDI devices # (1-4, default=4) 1919 1920 This module supports multiple cards. 1921 1922 Module snd-virtuoso 1923 ------------------- 1924 1925 Module for sound cards based on the Asus AV100/AV200 chips, 1926 i.e., Xonar D1, DX, D2, D2X, HDAV1.3 (Deluxe), Essence ST 1927 (Deluxe) and Essence STX. 1928 1929 This module supports autoprobe and multiple cards. 1930 1931 Module snd-vx222 1932 ---------------- 1933 1934 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards. 1935 1936 mic - Enable Microphone on V222 Mic (NYI) 1937 ibl - Capture IBL size. (default = 0, minimum size) 1938 1939 This module supports multiple cards. 1940 1941 When the driver is compiled as a module and the hotplug firmware 1942 is supported, the firmware data is loaded via hotplug automatically. 1943 Install the necessary firmware files in alsa-firmware package. 1944 When no hotplug fw loader is available, you need to load the 1945 firmware via vxloader utility in alsa-tools package. To invoke 1946 vxloader automatically, add the following to /etc/modprobe.conf 1947 1948 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader 1949 1950 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to 1951 /etc/modules.conf, instead.) 1952 IBL size defines the interrupts period for PCM. The smaller size 1953 gives smaller latency but leads to more CPU consumption, too. 1954 The size is usually aligned to 126. As default (=0), the smallest 1955 size is chosen. The possible IBL values can be found in 1956 /proc/asound/cardX/vx-status proc file. 1957 1958 The power-management is supported. 1959 1960 Module snd-vxpocket 1961 ------------------- 1962 1963 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards. 1964 1965 ibl - Capture IBL size. (default = 0, minimum size) 1966 1967 This module supports multiple cards. The module is compiled only when 1968 PCMCIA is supported on kernel. 1969 1970 With the older 2.6.x kernel, to activate the driver via the card 1971 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the 1972 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no 1973 longer require a config file. 1974 1975 When the driver is compiled as a module and the hotplug firmware 1976 is supported, the firmware data is loaded via hotplug automatically. 1977 Install the necessary firmware files in alsa-firmware package. 1978 When no hotplug fw loader is available, you need to load the 1979 firmware via vxloader utility in alsa-tools package. 1980 1981 About capture IBL, see the description of snd-vx222 module. 1982 1983 Note: snd-vxp440 driver is merged to snd-vxpocket driver since 1984 ALSA 1.0.10. 1985 1986 The power-management is supported. 1987 1988 Module snd-ymfpci 1989 ----------------- 1990 1991 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x). 1992 1993 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default, 1994 1 (auto-detect for YMF744/754 only) 1995 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default 1996 1 (auto-detect for YMF744/754 only) 1997 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default, 1998 1 (auto-detect) 1999 rear_switch - enable shared rear/line-in switch (bool) 2000 2001 This module supports autoprobe and multiple chips. 2002 2003 The power-management is supported. 2004 2005 Module snd-pdaudiocf 2006 -------------------- 2007 2008 Module for Sound Core PDAudioCF sound card. 2009 2010 The power-management is supported. 2011 2012 2013 AC97 Quirk Option 2014 ================= 2015 2016 The ac97_quirk option is used to enable/override the workaround for 2017 specific devices on drivers for on-board AC'97 controllers like 2018 snd-intel8x0. Some hardware have swapped output pins between Master 2019 and Headphone, or Surround (thanks to confusion of AC'97 2020 specifications from version to version :-) 2021 2022 The driver provides the auto-detection of known problematic devices, 2023 but some might be unknown or wrongly detected. In such a case, pass 2024 the proper value with this option. 2025 2026 The following strings are accepted: 2027 - default Don't override the default setting 2028 - none Disable the quirk 2029 - hp_only Bind Master and Headphone controls as a single control 2030 - swap_hp Swap headphone and master controls 2031 - swap_surround Swap master and surround controls 2032 - ad_sharing For AD1985, turn on OMS bit and use headphone 2033 - alc_jack For ALC65x, turn on the jack sense mode 2034 - inv_eapd Inverted EAPD implementation 2035 - mute_led Bind EAPD bit for turning on/off mute LED 2036 2037 For backward compatibility, the corresponding integer value -1, 0, 2038 ... are accepted, too. 2039 2040 For example, if "Master" volume control has no effect on your device 2041 but only "Headphone" does, pass ac97_quirk=hp_only module option. 2042 2043 2044 Configuring Non-ISAPNP Cards 2045 ============================ 2046 2047 When the kernel is configured with ISA-PnP support, the modules 2048 supporting the isapnp cards will have module options "isapnp". 2049 If this option is set, *only* the ISA-PnP devices will be probed. 2050 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option 2051 together with the proper i/o and irq configuration. 2052 2053 When the kernel is configured without ISA-PnP support, isapnp option 2054 will be not built in. 2055 2056 2057 Module Autoloading Support 2058 ========================== 2059 2060 The ALSA drivers can be loaded automatically on demand by defining 2061 module aliases. The string 'snd-card-%1' is requested for ALSA native 2062 devices where %i is sound card number from zero to seven. 2063 2064 To auto-load an ALSA driver for OSS services, define the string 2065 'sound-slot-%i' where %i means the slot number for OSS, which 2066 corresponds to the card index of ALSA. Usually, define this 2067 as the same card module. 2068 2069 An example configuration for a single emu10k1 card is like below: 2070 ----- /etc/modprobe.conf 2071 alias snd-card-0 snd-emu10k1 2072 alias sound-slot-0 snd-emu10k1 2073 ----- /etc/modprobe.conf 2074 2075 The available number of auto-loaded sound cards depends on the module 2076 option "cards_limit" of snd module. As default it's set to 1. 2077 To enable the auto-loading of multiple cards, specify the number of 2078 sound cards in that option. 2079 2080 When multiple cards are available, it'd better to specify the index 2081 number for each card via module option, too, so that the order of 2082 cards is kept consistent. 2083 2084 An example configuration for two sound cards is like below: 2085 2086 ----- /etc/modprobe.conf 2087 # ALSA portion 2088 options snd cards_limit=2 2089 alias snd-card-0 snd-interwave 2090 alias snd-card-1 snd-ens1371 2091 options snd-interwave index=0 2092 options snd-ens1371 index=1 2093 # OSS/Free portion 2094 alias sound-slot-0 snd-interwave 2095 alias sound-slot-1 snd-ens1371 2096 ----- /etc/modprobe.conf 2097 2098 In this example, the interwave card is always loaded as the first card 2099 (index 0) and ens1371 as the second (index 1). 2100 2101 Alternative (and new) way to fixate the slot assignment is to use 2102 "slots" option of snd module. In the case above, specify like the 2103 following: 2104 2105 options snd slots=snd-interwave,snd-ens1371 2106 2107 Then, the first slot (#0) is reserved for snd-interwave driver, and 2108 the second (#1) for snd-ens1371. You can omit index option in each 2109 driver if slots option is used (although you can still have them at 2110 the same time as long as they don't conflict). 2111 2112 The slots option is especially useful for avoiding the possible 2113 hot-plugging and the resultant slot conflict. For example, in the 2114 case above again, the first two slots are already reserved. If any 2115 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or 2116 snd-ens1371, it will be assigned to the third or later slot. 2117 2118 When a module name is given with '!', the slot will be given for any 2119 modules but that name. For example, "slots=!snd-pcsp" will reserve 2120 the first slot for any modules but snd-pcsp. 2121 2122 2123 ALSA PCM devices to OSS devices mapping 2124 ======================================= 2125 2126 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4 2127 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3 2128 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12 2129 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20 2130 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19 2131 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28 2132 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36 2133 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39 2134 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44 2135 2136 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means 2137 sound card number and second means device number. The ALSA devices 2138 have either 'c' or 'p' suffix indicating the direction, capture and 2139 playback, respectively. 2140 2141 Please note that the device mapping above may be varied via the module 2142 options of snd-pcm-oss module. 2143 2144 2145 Proc interfaces (/proc/asound) 2146 ============================== 2147 2148 /proc/asound/card#/pcm#[cp]/oss 2149 ------------------------------- 2150 String "erase" - erase all additional informations about OSS applications 2151 String "<app_name> <fragments> <fragment_size> [<options>]" 2152 2153 <app_name> - name of application with (higher priority) or without path 2154 <fragments> - number of fragments or zero if auto 2155 <fragment_size> - size of fragment in bytes or zero if auto 2156 <options> - optional parameters 2157 - disable the application tries to open a pcm device for 2158 this channel but does not want to use it. 2159 (Cause a bug or mmap needs) 2160 It's good for Quake etc... 2161 - direct don't use plugins 2162 - block force block mode (rvplayer) 2163 - non-block force non-block mode 2164 - whole-frag write only whole fragments (optimization affecting 2165 playback only) 2166 - no-silence do not fill silence ahead to avoid clicks 2167 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl 2168 instead of filled blocks 2169 2170 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss 2171 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss 2172 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss 2173 2174 2175 Early Buffer Allocation 2176 ======================= 2177 2178 Some drivers (e.g. hdsp) require the large contiguous buffers, and 2179 sometimes it's too late to find such spaces when the driver module is 2180 actually loaded due to memory fragmentation. You can pre-allocate the 2181 PCM buffers by loading snd-page-alloc module and write commands to its 2182 proc file in prior, for example, in the early boot stage like 2183 /etc/init.d/*.local scripts. 2184 2185 Reading the proc file /proc/drivers/snd-page-alloc shows the current 2186 usage of page allocation. In writing, you can send the following 2187 commands to the snd-page-alloc driver: 2188 2189 - add VENDOR DEVICE MASK SIZE BUFFERS 2190 2191 VENDOR and DEVICE are PCI vendor and device IDs. They take 2192 integer numbers (0x prefix is needed for the hex). 2193 MASK is the PCI DMA mask. Pass 0 if not restricted. 2194 SIZE is the size of each buffer to allocate. You can pass 2195 k and m suffix for KB and MB. The max number is 16MB. 2196 BUFFERS is the number of buffers to allocate. It must be greater 2197 than 0. The max number is 4. 2198 2199 - erase 2200 2201 This will erase the all pre-allocated buffers which are not in 2202 use. 2203 2204 2205 Links and Addresses 2206 =================== 2207 2208 ALSA project homepage 2209 http://www.alsa-project.org 2210 2211 Kernel Bugzilla 2212 http://bugzilla.kernel.org/ 2213 2214 ALSA Developers ML 2215 mailto:alsa-devel[AT]alsa-project[DOT]org 2216 2217 alsa-info.sh script 2218 http://www.alsa-project.org/alsa-info.sh