linux/Documentation/sound/alsa/ALSA-Configuration.txt
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   2                Advanced Linux Sound Architecture - Driver
   3                ==========================================
   4                            Configuration guide
   5
   6
   7Kernel Configuration
   8====================
   9
  10To enable ALSA support you need at least to build the kernel with
  11primary sound card support (CONFIG_SOUND).  Since ALSA can emulate OSS,
  12you don't have to choose any of the OSS modules.
  13
  14Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
  15PCM supports if you want to run OSS applications with ALSA.
  16
  17If you want to support the WaveTable functionality on cards such as
  18SB Live! then you need to enable "Sequencer support"
  19(CONFIG_SND_SEQUENCER).
  20
  21To make ALSA debug messages more verbose, enable the "Verbose printk"
  22and "Debug" options.  To check for memory leaks, turn on "Debug memory"
  23too.  "Debug detection" will add checks for the detection of cards.
  24
  25Please 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
  27using isapnptools.
  28
  29
  30Creating ALSA devices
  31=====================
  32
  33This depends on your distribution, but normally you use the /dev/MAKEDEV
  34script to create the necessary device nodes.  On some systems you use a
  35script named 'snddevices'.
  36
  37
  38Module parameters
  39=================
  40
  41The user can load modules with options. If the module supports more than
  42one card and you have more than one card of the same type then you can
  43specify multiple values for the option separated by commas.
  44
  45Prior 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-asihpi
 231  -----------------
 232
 233    Module for AudioScience ASI soundcards
 234
 235    enable_hpi_hwdep    - enable HPI hwdep for AudioScience soundcard
 236
 237    This module supports multiple cards.
 238    The driver requires the firmware loader support on kernel.
 239
 240  Module snd-atiixp
 241  -----------------
 242
 243    Module for ATI IXP 150/200/250/400 AC97 controllers.
 244
 245    ac97_clock          - AC'97 clock (default = 48000)
 246    ac97_quirk          - AC'97 workaround for strange hardware
 247                          See "AC97 Quirk Option" section below.
 248    ac97_codec          - Workaround to specify which AC'97 codec 
 249                          instead of probing.  If this works for you
 250                          file a bug with your `lspci -vn` output.
 251                          -2  -- Force probing.
 252                          -1  -- Default behavior.
 253                          0-2 -- Use the specified codec.
 254    spdif_aclink        - S/PDIF transfer over AC-link (default = 1)
 255
 256    This module supports one card and autoprobe.
 257
 258    ATI IXP has two different methods to control SPDIF output.  One is
 259    over AC-link and another is over the "direct" SPDIF output.  The
 260    implementation depends on the motherboard, and you'll need to
 261    choose the correct one via spdif_aclink module option.
 262
 263    The power-management is supported.
 264
 265  Module snd-atiixp-modem
 266  -----------------------
 267
 268    Module for ATI IXP 150/200/250 AC97 modem controllers.
 269
 270    This module supports one card and autoprobe.
 271
 272    Note: The default index value of this module is -2, i.e. the first
 273          slot is excluded.
 274
 275    The power-management is supported.
 276
 277  Module snd-au8810, snd-au8820, snd-au8830
 278  -----------------------------------------
 279
 280    Module for Aureal Vortex, Vortex2 and Advantage device.
 281
 282    pcifix      - Control PCI workarounds
 283                  0 = Disable all workarounds
 284                  1 = Force the PCI latency of the Aureal card to 0xff
 285                  2 = Force the Extend PCI#2 Internal Master for Efficient
 286                      Handling of Dummy Requests on the VIA KT133 AGP Bridge
 287                  3 = Force both settings
 288                  255 = Autodetect what is required (default)
 289
 290    This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
 291    EQ, mpu401, gameport. A3D and wavetable support are still in development.
 292    Development and reverse engineering work is being coordinated at
 293    http://savannah.nongnu.org/projects/openvortex/
 294    SPDIF output has a copy of the AC97 codec output, unless you use the
 295    "spdif" pcm device, which allows raw data passthru.
 296    The hardware EQ hardware and SPDIF is only present in the Vortex2 and 
 297    Advantage.
 298
 299    Note: Some ALSA mixer applications don't handle the SPDIF sample rate 
 300           control correctly. If you have problems regarding this, try
 301           another ALSA compliant mixer (alsamixer works).
 302
 303  Module snd-azt1605
 304  ------------------
 305
 306    Module for Aztech Sound Galaxy soundcards based on the Aztech AZT1605
 307    chipset.
 308
 309    port        - port # for BASE (0x220,0x240,0x260,0x280)
 310    wss_port    - port # for WSS (0x530,0x604,0xe80,0xf40)
 311    irq         - IRQ # for WSS (7,9,10,11)
 312    dma1        - DMA # for WSS playback (0,1,3)
 313    dma2        - DMA # for WSS capture (0,1), -1 = disabled (default)
 314    mpu_port    - port # for MPU-401 UART (0x300,0x330), -1 = disabled (default)
 315    mpu_irq     - IRQ # for MPU-401 UART (3,5,7,9), -1 = disabled (default)
 316    fm_port     - port # for OPL3 (0x388), -1 = disabled (default)
 317
 318    This module supports multiple cards. It does not support autoprobe: port,
 319    wss_port, irq and dma1 have to be specified. The other values are
 320    optional.
 321
 322    "port" needs to match the BASE ADDRESS jumper on the card (0x220 or 0x240)
 323    or the value stored in the card's EEPROM for cards that have an EEPROM and
 324    their "CONFIG MODE" jumper set to "EEPROM SETTING". The other values can
 325    be chosen freely from the options enumerated above.
 326
 327    If dma2 is specified and different from dma1, the card will operate in
 328    full-duplex mode. When dma1=3, only dma2=0 is valid and the only way to
 329    enable capture since only channels 0 and 1 are available for capture.
 330
 331    Generic settings are "port=0x220 wss_port=0x530 irq=10 dma1=1 dma2=0
 332    mpu_port=0x330 mpu_irq=9 fm_port=0x388".
 333
 334    Whatever IRQ and DMA channels you pick, be sure to reserve them for
 335    legacy ISA in your BIOS.
 336
 337  Module snd-azt2316
 338  ------------------
 339
 340    Module for Aztech Sound Galaxy soundcards based on the Aztech AZT2316
 341    chipset.
 342
 343    port        - port # for BASE (0x220,0x240,0x260,0x280)
 344    wss_port    - port # for WSS (0x530,0x604,0xe80,0xf40)
 345    irq         - IRQ # for WSS (7,9,10,11)
 346    dma1        - DMA # for WSS playback (0,1,3)
 347    dma2        - DMA # for WSS capture (0,1), -1 = disabled (default)
 348    mpu_port    - port # for MPU-401 UART (0x300,0x330), -1 = disabled (default)
 349    mpu_irq     - IRQ # for MPU-401 UART (5,7,9,10), -1 = disabled (default)
 350    fm_port     - port # for OPL3 (0x388), -1 = disabled (default)
 351
 352    This module supports multiple cards. It does not support autoprobe: port,
 353    wss_port, irq and dma1 have to be specified. The other values are
 354    optional.
 355
 356    "port" needs to match the BASE ADDRESS jumper on the card (0x220 or 0x240)
 357    or the value stored in the card's EEPROM for cards that have an EEPROM and
 358    their "CONFIG MODE" jumper set to "EEPROM SETTING". The other values can
 359    be chosen freely from the options enumerated above.
 360
 361    If dma2 is specified and different from dma1, the card will operate in
 362    full-duplex mode. When dma1=3, only dma2=0 is valid and the only way to
 363    enable capture since only channels 0 and 1 are available for capture.
 364
 365    Generic settings are "port=0x220 wss_port=0x530 irq=10 dma1=1 dma2=0
 366    mpu_port=0x330 mpu_irq=9 fm_port=0x388".
 367
 368    Whatever IRQ and DMA channels you pick, be sure to reserve them for
 369    legacy ISA in your BIOS.
 370
 371  Module snd-aw2
 372  --------------
 373
 374    Module for Audiowerk2 sound card
 375
 376    This module supports multiple cards.
 377
 378  Module snd-azt2320
 379  ------------------
 380
 381    Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
 382
 383    This module supports multiple cards, PnP and autoprobe.
 384    
 385    The power-management is supported.
 386
 387  Module snd-azt3328
 388  ------------------
 389
 390    Module for sound cards based on Aztech AZF3328 PCI chip.
 391
 392    joystick    - Enable joystick (default off)
 393
 394    This module supports multiple cards.
 395
 396  Module snd-bt87x
 397  ----------------
 398
 399    Module for video cards based on Bt87x chips.
 400
 401    digital_rate - Override the default digital rate (Hz)
 402    load_all    - Load the driver even if the card model isn't known
 403
 404    This module supports multiple cards.
 405
 406    Note: The default index value of this module is -2, i.e. the first
 407          slot is excluded.
 408
 409  Module snd-ca0106
 410  -----------------
 411
 412    Module for Creative Audigy LS and SB Live 24bit
 413
 414    This module supports multiple cards.
 415
 416
 417  Module snd-cmi8330
 418  ------------------
 419
 420    Module for sound cards based on C-Media CMI8330 ISA chips.
 421
 422    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
 423
 424    with isapnp=0, the following options are available:
 425
 426    wssport     - port # for CMI8330 chip (WSS)
 427    wssirq      - IRQ # for CMI8330 chip (WSS)
 428    wssdma      - first DMA # for CMI8330 chip (WSS)
 429    sbport      - port # for CMI8330 chip (SB16)
 430    sbirq       - IRQ # for CMI8330 chip (SB16)
 431    sbdma8      - 8bit DMA # for CMI8330 chip (SB16)
 432    sbdma16     - 16bit DMA # for CMI8330 chip (SB16)
 433    fmport      - (optional) OPL3 I/O port
 434    mpuport     - (optional) MPU401 I/O port
 435    mpuirq      - (optional) MPU401 irq #
 436
 437    This module supports multiple cards and autoprobe.
 438
 439    The power-management is supported.
 440
 441  Module snd-cmipci
 442  -----------------
 443
 444    Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
 445
 446    mpu_port    - port address of MIDI interface (8338 only):
 447                  0x300,0x310,0x320,0x330 = legacy port,
 448                  0 = disable (default)
 449    fm_port     - port address of OPL-3 FM synthesizer (8x38 only):
 450                  0x388 = legacy port,
 451                  1 = integrated PCI port (default on 8738),
 452                  0 = disable
 453    soft_ac3    - Software-conversion of raw SPDIF packets (model 033 only)
 454                  (default = 1)
 455    joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
 456
 457    This module supports autoprobe and multiple cards.
 458    
 459    The power-management is supported.
 460
 461  Module snd-cs4231
 462  -----------------
 463
 464    Module for sound cards based on CS4231 ISA chips.
 465
 466    port        - port # for CS4231 chip
 467    mpu_port    - port # for MPU-401 UART (optional), -1 = disable
 468    irq         - IRQ # for CS4231 chip
 469    mpu_irq     - IRQ # for MPU-401 UART
 470    dma1        - first DMA # for CS4231 chip
 471    dma2        - second DMA # for CS4231 chip
 472    
 473    This module supports multiple cards. This module does not support autoprobe
 474    thus main port must be specified!!! Other ports are optional.
 475
 476    The power-management is supported.
 477    
 478  Module snd-cs4236
 479  -----------------
 480
 481    Module for sound cards based on CS4232/CS4232A,
 482                                   CS4235/CS4236/CS4236B/CS4237B/
 483                                   CS4238B/CS4239 ISA chips.
 484
 485    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
 486
 487    with isapnp=0, the following options are available:
 488
 489    port        - port # for CS4236 chip (PnP setup - 0x534)
 490    cport       - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
 491    mpu_port    - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
 492    fm_port     - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
 493    irq         - IRQ # for CS4236 chip (5,7,9,11,12,15)
 494    mpu_irq     - IRQ # for MPU-401 UART (9,11,12,15)
 495    dma1        - first DMA # for CS4236 chip (0,1,3)
 496    dma2        - second DMA # for CS4236 chip (0,1,3), -1 = disable
 497    
 498    This module supports multiple cards. This module does not support autoprobe
 499    (if ISA PnP is not used) thus main port and control port must be
 500    specified!!! Other ports are optional.
 501
 502    The power-management is supported.
 503
 504    This module is aliased as snd-cs4232 since it provides the old
 505    snd-cs4232 functionality, too.
 506
 507  Module snd-cs4281
 508  -----------------
 509
 510    Module for Cirrus Logic CS4281 soundchip.
 511
 512    dual_codec  - Secondary codec ID (0 = disable, default)
 513
 514    This module supports multiple cards.
 515
 516    The power-management is supported.
 517
 518  Module snd-cs46xx
 519  -----------------
 520
 521    Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
 522                                       CS4624/CS4630/CS4280 PCI chips.
 523
 524    external_amp     - Force to enable external amplifier.
 525    thinkpad         - Force to enable Thinkpad's CLKRUN control.
 526    mmap_valid       - Support OSS mmap mode (default = 0).
 527
 528    This module supports multiple cards and autoprobe.
 529    Usually external amp and CLKRUN controls are detected automatically
 530    from PCI sub vendor/device ids.  If they don't work, give the options
 531    above explicitly.
 532
 533    The power-management is supported.
 534
 535  Module snd-cs5530
 536  _________________
 537
 538    Module for Cyrix/NatSemi Geode 5530 chip. 
 539  
 540  Module snd-cs5535audio
 541  ----------------------
 542
 543    Module for multifunction CS5535 companion PCI device
 544
 545    The power-management is supported.
 546
 547  Module snd-ctxfi
 548  ----------------
 549
 550    Module for Creative Sound Blaster X-Fi boards (20k1 / 20k2 chips)
 551        * Creative Sound Blaster X-Fi Titanium Fatal1ty Champion Series
 552        * Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series
 553        * Creative Sound Blaster X-Fi Titanium Professional Audio
 554        * Creative Sound Blaster X-Fi Titanium
 555        * Creative Sound Blaster X-Fi Elite Pro
 556        * Creative Sound Blaster X-Fi Platinum
 557        * Creative Sound Blaster X-Fi Fatal1ty
 558        * Creative Sound Blaster X-Fi XtremeGamer
 559        * Creative Sound Blaster X-Fi XtremeMusic
 560
 561    reference_rate      - reference sample rate, 44100 or 48000 (default)
 562    multiple            - multiple to ref. sample rate, 1 or 2 (default)
 563    subsystem           - override the PCI SSID for probing; the value
 564                          consists of SSVID << 16 | SSDID.  The default is
 565                          zero, which means no override.
 566
 567    This module supports multiple cards.
 568
 569  Module snd-darla20
 570  ------------------
 571
 572    Module for Echoaudio Darla20
 573
 574    This module supports multiple cards.
 575    The driver requires the firmware loader support on kernel.
 576
 577  Module snd-darla24
 578  ------------------
 579
 580    Module for Echoaudio Darla24
 581
 582    This module supports multiple cards.
 583    The driver requires the firmware loader support on kernel.
 584
 585  Module snd-dt019x
 586  -----------------
 587
 588    Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
 589    only)
 590
 591    This module supports multiple cards.  This module is enabled only with
 592    ISA PnP support.
 593
 594    The power-management is supported.
 595
 596  Module snd-dummy
 597  ----------------
 598
 599    Module for the dummy sound card. This "card" doesn't do any output
 600    or input, but you may use this module for any application which
 601    requires a sound card (like RealPlayer).
 602
 603    pcm_devs       - Number of PCM devices assigned to each card
 604                     (default = 1, up to 4)
 605    pcm_substreams - Number of PCM substreams assigned to each PCM
 606                     (default = 8, up to 128)
 607    hrtimer        - Use hrtimer (=1, default) or system timer (=0)
 608    fake_buffer    - Fake buffer allocations (default = 1)
 609
 610    When multiple PCM devices are created, snd-dummy gives different
 611    behavior to each PCM device:
 612      0 = interleaved with mmap support
 613      1 = non-interleaved with mmap support
 614      2 = interleaved without mmap 
 615      3 = non-interleaved without mmap
 616
 617    As default, snd-dummy drivers doesn't allocate the real buffers
 618    but either ignores read/write or mmap a single dummy page to all
 619    buffer pages, in order to save the resouces.  If your apps need
 620    the read/ written buffer data to be consistent, pass fake_buffer=0
 621    option.
 622
 623    The power-management is supported.
 624
 625  Module snd-echo3g
 626  -----------------
 627
 628    Module for Echoaudio 3G cards (Gina3G/Layla3G)
 629
 630    This module supports multiple cards.
 631    The driver requires the firmware loader support on kernel.
 632
 633  Module snd-emu10k1
 634  ------------------
 635
 636    Module for EMU10K1/EMU10k2 based PCI sound cards.
 637                        * Sound Blaster Live!
 638                        * Sound Blaster PCI 512
 639                        * Emu APS (partially supported)
 640                        * Sound Blaster Audigy
 641
 642    extin   - bitmap of available external inputs for FX8010 (see bellow)
 643    extout  - bitmap of available external outputs for FX8010 (see bellow)
 644    seq_ports - allocated sequencer ports (4 by default)
 645    max_synth_voices - limit of voices used for wavetable (64 by default)
 646    max_buffer_size  - specifies the maximum size of wavetable/pcm buffers
 647                       given in MB unit.  Default value is 128.
 648    enable_ir - enable IR
 649
 650    This module supports multiple cards and autoprobe.
 651
 652    Input & Output configurations                       [extin/extout]
 653        * Creative Card wo/Digital out                  [0x0003/0x1f03]
 654        * Creative Card w/Digital out                   [0x0003/0x1f0f]
 655        * Creative Card w/Digital CD in                 [0x000f/0x1f0f]
 656        * Creative Card wo/Digital out + LiveDrive      [0x3fc3/0x1fc3]
 657        * Creative Card w/Digital out + LiveDrive       [0x3fc3/0x1fcf]
 658        * Creative Card w/Digital CD in + LiveDrive     [0x3fcf/0x1fcf]
 659        * Creative Card wo/Digital out + Digital I/O 2  [0x0fc3/0x1f0f]
 660        * Creative Card w/Digital out + Digital I/O 2   [0x0fc3/0x1f0f]
 661        * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
 662        * Creative Card 5.1/w Digital out + LiveDrive   [0x3fc3/0x1fff]
 663        * Creative Card 5.1 (c) 2003                    [0x3fc3/0x7cff]
 664        * Creative Card all ins and outs                [0x3fff/0x7fff]
 665    
 666    The power-management is supported.
 667
 668  Module snd-emu10k1x
 669  -------------------
 670
 671    Module for Creative Emu10k1X (SB Live Dell OEM version)
 672
 673    This module supports multiple cards.
 674
 675  Module snd-ens1370
 676  ------------------
 677
 678    Module for Ensoniq AudioPCI ES1370 PCI sound cards.
 679                        * SoundBlaster PCI 64
 680                        * SoundBlaster PCI 128
 681
 682    joystick            - Enable joystick (default off)
 683
 684    This module supports multiple cards and autoprobe.
 685    
 686    The power-management is supported.
 687
 688  Module snd-ens1371
 689  ------------------
 690
 691    Module for Ensoniq AudioPCI ES1371 PCI sound cards.
 692                        * SoundBlaster PCI 64
 693                        * SoundBlaster PCI 128
 694                        * SoundBlaster Vibra PCI
 695
 696    joystick_port       - port # for joystick (0x200,0x208,0x210,0x218),
 697                          0 = disable (default), 1 = auto-detect
 698
 699    This module supports multiple cards and autoprobe.
 700    
 701    The power-management is supported.
 702
 703  Module snd-es1688
 704  -----------------
 705
 706    Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
 707
 708    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
 709    mpu_port    - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
 710    mpu_irq     - IRQ # for MPU-401 port (5,7,9,10)
 711    fm_port     - port # for OPL3 (option; share the same port as default)
 712
 713    with isapnp=0, the following additional options are available:
 714    port        - port # for ES-1688 chip (0x220,0x240,0x260)
 715    irq         - IRQ # for ES-1688 chip (5,7,9,10)
 716    dma8        - DMA # for ES-1688 chip (0,1,3)
 717
 718    This module supports multiple cards and autoprobe (without MPU-401 port)
 719    and PnP with the ES968 chip.
 720
 721  Module snd-es18xx
 722  -----------------
 723
 724    Module for ESS AudioDrive ES-18xx sound cards.
 725
 726    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
 727
 728    with isapnp=0, the following options are available:
 729
 730    port        - port # for ES-18xx chip (0x220,0x240,0x260)
 731    mpu_port    - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
 732    fm_port     - port # for FM (optional, not used)
 733    irq         - IRQ # for ES-18xx chip (5,7,9,10)
 734    dma1        - first DMA # for ES-18xx chip (0,1,3)
 735    dma2        - first DMA # for ES-18xx chip (0,1,3)
 736
 737    This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
 738    port if native ISA PnP routines are not used).
 739    When dma2 is equal with dma1, the driver works as half-duplex.
 740
 741    The power-management is supported.
 742
 743  Module snd-es1938
 744  -----------------
 745
 746    Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
 747
 748    This module supports multiple cards and autoprobe.
 749
 750    The power-management is supported.
 751
 752  Module snd-es1968
 753  -----------------
 754
 755    Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
 756
 757    total_bufsize       - total buffer size in kB (1-4096kB)
 758    pcm_substreams_p    - playback channels (1-8, default=2)
 759    pcm_substreams_c    - capture channels (1-8, default=0)
 760    clock               - clock (0 = auto-detection)
 761    use_pm              - support the power-management (0 = off, 1 = on,
 762                          2 = auto (default))
 763    enable_mpu          - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
 764    joystick            - enable joystick (default off)       
 765
 766    This module supports multiple cards and autoprobe.
 767
 768    The power-management is supported.
 769
 770  Module snd-fm801
 771  ----------------
 772
 773    Module for ForteMedia FM801 based PCI sound cards.
 774
 775    tea575x_tuner       - Enable TEA575x tuner
 776                          - 1 = MediaForte 256-PCS
 777                          - 2 = MediaForte 256-PCPR
 778                          - 3 = MediaForte 64-PCR  
 779                          - High 16-bits are video (radio) device number + 1
 780                          - example: 0x10002 (MediaForte 256-PCPR, device 1)
 781
 782    This module supports multiple cards and autoprobe.
 783    
 784    The power-management is supported.
 785
 786  Module snd-gina20
 787  -----------------
 788
 789    Module for Echoaudio Gina20
 790
 791    This module supports multiple cards.
 792    The driver requires the firmware loader support on kernel.
 793
 794  Module snd-gina24
 795  -----------------
 796
 797    Module for Echoaudio Gina24
 798
 799    This module supports multiple cards.
 800    The driver requires the firmware loader support on kernel.
 801
 802  Module snd-gusclassic
 803  ---------------------
 804
 805    Module for Gravis UltraSound Classic sound card.
 806
 807    port        - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
 808    irq         - IRQ # for GF1 chip (3,5,9,11,12,15)
 809    dma1        - DMA # for GF1 chip (1,3,5,6,7)
 810    dma2        - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
 811    joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
 812    voices      - GF1 voices limit (14-32)
 813    pcm_voices  - reserved PCM voices
 814
 815    This module supports multiple cards and autoprobe.
 816
 817  Module snd-gusextreme
 818  ---------------------
 819
 820    Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
 821
 822    port        - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
 823    gf1_port    - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
 824    mpu_port    - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
 825    irq         - IRQ # for ES-1688 chip (5,7,9,10)
 826    gf1_irq     - IRQ # for GF1 chip (3,5,9,11,12,15)
 827    mpu_irq     - IRQ # for MPU-401 port (5,7,9,10)
 828    dma8        - DMA # for ES-1688 chip (0,1,3)
 829    dma1        - DMA # for GF1 chip (1,3,5,6,7)
 830    joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
 831    voices      - GF1 voices limit (14-32)
 832    pcm_voices  - reserved PCM voices
 833
 834    This module supports multiple cards and autoprobe (without MPU-401 port).
 835
 836  Module snd-gusmax
 837  -----------------
 838
 839    Module for Gravis UltraSound MAX sound card.
 840
 841    port        - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
 842    irq         - IRQ # for GF1 chip (3,5,9,11,12,15)
 843    dma1        - DMA # for GF1 chip (1,3,5,6,7)
 844    dma2        - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
 845    joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
 846    voices      - GF1 voices limit (14-32)
 847    pcm_voices  - reserved PCM voices
 848
 849    This module supports multiple cards and autoprobe.
 850    
 851  Module snd-hda-intel
 852  --------------------
 853
 854    Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8, ICH9, ICH10,
 855                        PCH, SCH),
 856                ATI SB450, SB600, R600, RS600, RS690, RS780, RV610, RV620,
 857                        RV630, RV635, RV670, RV770,
 858                VIA VT8251/VT8237A,
 859                SIS966, ULI M5461
 860
 861    [Multiple options for each card instance]
 862    model       - force the model name
 863    position_fix - Fix DMA pointer
 864                  -1 = system default: choose appropriate one per controller
 865                        hardware
 866                  0 = auto: falls back to LPIB when POSBUF doesn't work
 867                  1 = use LPIB
 868                  2 = POSBUF: use position buffer
 869                  3 = VIACOMBO: VIA-specific workaround for capture
 870                  4 = COMBO: use LPIB for playback, auto for capture stream
 871    probe_mask  - Bitmask to probe codecs (default = -1, meaning all slots)
 872                  When the bit 8 (0x100) is set, the lower 8 bits are used
 873                  as the "fixed" codec slots; i.e. the driver probes the
 874                  slots regardless what hardware reports back
 875    probe_only  - Only probing and no codec initialization (default=off);
 876                  Useful to check the initial codec status for debugging
 877    bdl_pos_adj - Specifies the DMA IRQ timing delay in samples.
 878                Passing -1 will make the driver to choose the appropriate
 879                value based on the controller chip.
 880    patch       - Specifies the early "patch" files to modify the HD-audio
 881                setup before initializing the codecs.  This option is
 882                available only when CONFIG_SND_HDA_PATCH_LOADER=y is set.
 883                See HD-Audio.txt for details.
 884    beep_mode   - Selects the beep registration mode (0=off, 1=on); default
 885                value is set via CONFIG_SND_HDA_INPUT_BEEP_MODE kconfig.
 886    
 887    [Single (global) options]
 888    single_cmd  - Use single immediate commands to communicate with
 889                codecs (for debugging only)
 890    enable_msi  - Enable Message Signaled Interrupt (MSI) (default = off)
 891    power_save  - Automatic power-saving timeout (in second, 0 =
 892                disable)
 893    power_save_controller - Reset HD-audio controller in power-saving mode
 894                (default = on)
 895    align_buffer_size - Force rounding of buffer/period sizes to multiples
 896                      of 128 bytes. This is more efficient in terms of memory
 897                      access but isn't required by the HDA spec and prevents
 898                      users from specifying exact period/buffer sizes.
 899                      (default = on)
 900    snoop       - Enable/disable snooping (default = on)
 901
 902    This module supports multiple cards and autoprobe.
 903    
 904    See Documentation/sound/alsa/HD-Audio.txt for more details about
 905    HD-audio driver.
 906
 907    Each codec may have a model table for different configurations.
 908    If your machine isn't listed there, the default (usually minimal)
 909    configuration is set up.  You can pass "model=<name>" option to
 910    specify a certain model in such a case.  There are different
 911    models depending on the codec chip.  The list of available models
 912    is found in HD-Audio-Models.txt
 913
 914    The model name "generic" is treated as a special case.  When this
 915    model is given, the driver uses the generic codec parser without
 916    "codec-patch".  It's sometimes good for testing and debugging.
 917
 918    If the default configuration doesn't work and one of the above
 919    matches with your device, report it together with alsa-info.sh
 920    output (with --no-upload option) to kernel bugzilla or alsa-devel
 921    ML (see the section "Links and Addresses").
 922
 923    power_save and power_save_controller options are for power-saving
 924    mode.  See powersave.txt for details.
 925
 926    Note 2: If you get click noises on output, try the module option
 927            position_fix=1 or 2.  position_fix=1 will use the SD_LPIB
 928            register value without FIFO size correction as the current
 929            DMA pointer.  position_fix=2 will make the driver to use
 930            the position buffer instead of reading SD_LPIB register.
 931            (Usually SD_LPIB register is more accurate than the
 932            position buffer.)
 933
 934            position_fix=3 is specific to VIA devices.  The position
 935            of the capture stream is checked from both LPIB and POSBUF
 936            values.  position_fix=4 is a combination mode, using LPIB
 937            for playback and POSBUF for capture.
 938
 939    NB: If you get many "azx_get_response timeout" messages at
 940    loading, it's likely a problem of interrupts (e.g. ACPI irq
 941    routing).  Try to boot with options like "pci=noacpi".  Also, you
 942    can try "single_cmd=1" module option.  This will switch the
 943    communication method between HDA controller and codecs to the
 944    single immediate commands instead of CORB/RIRB.  Basically, the
 945    single command mode is provided only for BIOS, and you won't get
 946    unsolicited events, too.  But, at least, this works independently
 947    from the irq.  Remember this is a last resort, and should be
 948    avoided as much as possible...
 949    
 950    MORE NOTES ON "azx_get_response timeout" PROBLEMS:
 951    On some hardwares, you may need to add a proper probe_mask option
 952    to avoid the "azx_get_response timeout" problem above, instead.
 953    This occurs when the access to non-existing or non-working codec slot
 954    (likely a modem one) causes a stall of the communication via HD-audio
 955    bus.  You can see which codec slots are probed by enabling
 956    CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
 957    proc files.  Then limit the slots to probe by probe_mask option.
 958    For example, probe_mask=1 means to probe only the first slot, and
 959    probe_mask=4 means only the third slot.
 960
 961    The power-management is supported.
 962
 963  Module snd-hdsp
 964  ---------------
 965
 966    Module for RME Hammerfall DSP audio interface(s)
 967
 968    This module supports multiple cards.
 969
 970    Note: The firmware data can be automatically loaded via hotplug
 971          when CONFIG_FW_LOADER is set.  Otherwise, you need to load
 972          the firmware via hdsploader utility included in alsa-tools
 973          package.
 974          The firmware data is found in alsa-firmware package.
 975
 976    Note: snd-page-alloc module does the job which snd-hammerfall-mem
 977          module did formerly.  It will allocate the buffers in advance
 978          when any HDSP cards are found.  To make the buffer
 979          allocation sure, load snd-page-alloc module in the early
 980          stage of boot sequence.  See "Early Buffer Allocation"
 981          section.
 982
 983  Module snd-hdspm
 984  ----------------
 985
 986    Module for RME HDSP MADI board.
 987
 988    precise_ptr         - Enable precise pointer, or disable.
 989    line_outs_monitor   - Send playback streams to analog outs by default.
 990    enable_monitor      - Enable Analog Out on Channel 63/64 by default.
 991
 992    See hdspm.txt for details.
 993
 994  Module snd-ice1712
 995  ------------------
 996
 997    Module for Envy24 (ICE1712) based PCI sound cards.
 998                        * MidiMan M Audio Delta 1010
 999                        * MidiMan M Audio Delta 1010LT
1000                        * MidiMan M Audio Delta DiO 2496
1001                        * MidiMan M Audio Delta 66
1002                        * MidiMan M Audio Delta 44
1003                        * MidiMan M Audio Delta 410
1004                        * MidiMan M Audio Audiophile 2496
1005                        * TerraTec EWS 88MT
1006                        * TerraTec EWS 88D
1007                        * TerraTec EWX 24/96
1008                        * TerraTec DMX 6Fire
1009                        * TerraTec Phase 88
1010                        * Hoontech SoundTrack DSP 24
1011                        * Hoontech SoundTrack DSP 24 Value
1012                        * Hoontech SoundTrack DSP 24 Media 7.1
1013                        * Event Electronics, EZ8
1014                        * Digigram VX442
1015                        * Lionstracs, Mediastaton
1016                        * Terrasoniq TS 88
1017
1018    model       - Use the given board model, one of the following:
1019                  delta1010, dio2496, delta66, delta44, audiophile, delta410,
1020                  delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1021                  dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1022                  phase88, mediastation
1023    omni        - Omni I/O support for MidiMan M-Audio Delta44/66
1024    cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1025                     in msec resolution, default value is 500 (0.5 sec)
1026
1027    This module supports multiple cards and autoprobe. Note: The consumer part
1028    is not used with all Envy24 based cards (for example in the MidiMan Delta
1029    serie).
1030
1031    Note: The supported board is detected by reading EEPROM or PCI
1032          SSID (if EEPROM isn't available).  You can override the
1033          model by passing "model" module option in case that the
1034          driver isn't configured properly or you want to try another
1035          type for testing.
1036
1037  Module snd-ice1724
1038  ------------------
1039
1040    Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1041                        * MidiMan M Audio Revolution 5.1
1042                        * MidiMan M Audio Revolution 7.1
1043                        * MidiMan M Audio Audiophile 192
1044                        * AMP Ltd AUDIO2000
1045                        * TerraTec Aureon 5.1 Sky
1046                        * TerraTec Aureon 7.1 Space
1047                        * TerraTec Aureon 7.1 Universe
1048                        * TerraTec Phase 22
1049                        * TerraTec Phase 28
1050                        * AudioTrak Prodigy 7.1
1051                        * AudioTrak Prodigy 7.1 LT
1052                        * AudioTrak Prodigy 7.1 XT
1053                        * AudioTrak Prodigy 7.1 HIFI
1054                        * AudioTrak Prodigy 7.1 HD2
1055                        * AudioTrak Prodigy 192
1056                        * Pontis MS300
1057                        * Albatron K8X800 Pro II 
1058                        * Chaintech ZNF3-150
1059                        * Chaintech ZNF3-250
1060                        * Chaintech 9CJS
1061                        * Chaintech AV-710
1062                        * Shuttle SN25P
1063                        * Onkyo SE-90PCI
1064                        * Onkyo SE-200PCI
1065                        * ESI Juli@
1066                        * ESI Maya44
1067                        * Hercules Fortissimo IV
1068                        * EGO-SYS WaveTerminal 192M
1069
1070    model       - Use the given board model, one of the following:
1071                  revo51, revo71, amp2000, prodigy71, prodigy71lt,
1072                  prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1073                  juli, aureon51, aureon71, universe, ap192, k8x800,
1074                  phase22, phase28, ms300, av710, se200pci, se90pci,
1075                  fortissimo4, sn25p, WT192M, maya44
1076
1077    This module supports multiple cards and autoprobe.
1078
1079    Note: The supported board is detected by reading EEPROM or PCI
1080          SSID (if EEPROM isn't available).  You can override the
1081          model by passing "model" module option in case that the
1082          driver isn't configured properly or you want to try another
1083          type for testing.
1084
1085  Module snd-indigo
1086  -----------------
1087
1088    Module for Echoaudio Indigo
1089
1090    This module supports multiple cards.
1091    The driver requires the firmware loader support on kernel.
1092
1093  Module snd-indigodj
1094  -------------------
1095
1096    Module for Echoaudio Indigo DJ
1097
1098    This module supports multiple cards.
1099    The driver requires the firmware loader support on kernel.
1100
1101  Module snd-indigoio
1102  -------------------
1103
1104    Module for Echoaudio Indigo IO
1105
1106    This module supports multiple cards.
1107    The driver requires the firmware loader support on kernel.
1108
1109  Module snd-intel8x0
1110  -------------------
1111
1112    Module for AC'97 motherboards from Intel and compatibles.
1113                        * Intel i810/810E, i815, i820, i830, i84x, MX440
1114                                ICH5, ICH6, ICH7, 6300ESB, ESB2
1115                        * SiS 7012 (SiS 735)
1116                        * NVidia NForce, NForce2, NForce3, MCP04, CK804
1117                                 CK8, CK8S, MCP501
1118                        * AMD AMD768, AMD8111
1119                        * ALi m5455
1120
1121    ac97_clock    - AC'97 codec clock base (0 = auto-detect)
1122    ac97_quirk    - AC'97 workaround for strange hardware
1123                    See "AC97 Quirk Option" section below.
1124    buggy_irq     - Enable workaround for buggy interrupts on some
1125                    motherboards (default yes on nForce chips,
1126                    otherwise off)
1127    buggy_semaphore - Enable workaround for hardwares with buggy
1128                    semaphores (e.g. on some ASUS laptops)
1129                    (default off)
1130    spdif_aclink  - Use S/PDIF over AC-link instead of direct connection
1131                    from the controller chip
1132                    (0 = off, 1 = on, -1 = default)
1133
1134    This module supports one chip and autoprobe.
1135
1136    Note: the latest driver supports auto-detection of chip clock.
1137    if you still encounter too fast playback, specify the clock
1138    explicitly via the module option "ac97_clock=41194".
1139
1140    Joystick/MIDI ports are not supported by this driver.  If your
1141    motherboard has these devices, use the ns558 or snd-mpu401
1142    modules, respectively.
1143
1144    The power-management is supported.
1145    
1146  Module snd-intel8x0m
1147  --------------------
1148
1149    Module for Intel ICH (i8x0) chipset MC97 modems.
1150                        * Intel i810/810E, i815, i820, i830, i84x, MX440
1151                                ICH5, ICH6, ICH7
1152                        * SiS 7013 (SiS 735)
1153                        * NVidia NForce, NForce2, NForce2s, NForce3
1154                        * AMD AMD8111
1155                        * ALi m5455
1156
1157    ac97_clock    - AC'97 codec clock base (0 = auto-detect)
1158
1159    This module supports one card and autoprobe.
1160
1161    Note: The default index value of this module is -2, i.e. the first
1162          slot is excluded.
1163
1164    The power-management is supported.
1165
1166  Module snd-interwave
1167  --------------------
1168
1169    Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1170    and other sound cards based on AMD InterWave (tm) chip.
1171  
1172    joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1173    midi        - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1174    pcm_voices  - reserved PCM voices for the synthesizer (default 2)
1175    effect      - 1 = InterWave effects enable (default 0);
1176                  requires 8 voices
1177    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
1178
1179    with isapnp=0, the following options are available:
1180
1181    port        - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1182    irq         - IRQ # for InterWave chip (3,5,9,11,12,15)
1183    dma1        - DMA # for InterWave chip (0,1,3,5,6,7)
1184    dma2        - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1185
1186    This module supports multiple cards, autoprobe and ISA PnP.
1187
1188  Module snd-interwave-stb
1189  ------------------------
1190
1191    Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1192    and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1193    circuit for extended control of bass, treble and master volume.
1194  
1195    joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1196    midi        - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1197    pcm_voices  - reserved PCM voices for the synthesizer (default 2)
1198    effect      - 1 = InterWave effects enable (default 0);
1199                  requires 8 voices
1200    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
1201
1202    with isapnp=0, the following options are available:
1203
1204    port        - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1205    port_tc     - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1206    irq         - IRQ # for InterWave chip (3,5,9,11,12,15)
1207    dma1        - DMA # for InterWave chip (0,1,3,5,6,7)
1208    dma2        - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1209
1210    This module supports multiple cards, autoprobe and ISA PnP.
1211
1212  Module snd-jazz16
1213  -------------------
1214
1215    Module for Media Vision Jazz16 chipset. The chipset consists of 3 chips:
1216    MVD1216 + MVA416 + MVA514.
1217
1218    port        - port # for SB DSP chip (0x210,0x220,0x230,0x240,0x250,0x260)
1219    irq         - IRQ # for SB DSP chip (3,5,7,9,10,15)
1220    dma8        - DMA # for SB DSP chip (1,3)
1221    dma16       - DMA # for SB DSP chip (5,7)
1222    mpu_port    - MPU-401 port # (0x300,0x310,0x320,0x330)
1223    mpu_irq     - MPU-401 irq # (2,3,5,7)
1224
1225    This module supports multiple cards.
1226
1227  Module snd-korg1212
1228  -------------------
1229
1230    Module for Korg 1212 IO PCI card
1231
1232    This module supports multiple cards.
1233
1234  Module snd-layla20
1235  ------------------
1236
1237    Module for Echoaudio Layla20
1238
1239    This module supports multiple cards.
1240    The driver requires the firmware loader support on kernel.
1241
1242  Module snd-layla24
1243  ------------------
1244
1245    Module for Echoaudio Layla24
1246
1247    This module supports multiple cards.
1248    The driver requires the firmware loader support on kernel.
1249
1250  Module snd-lola
1251  ---------------
1252
1253    Module for Digigram Lola PCI-e boards
1254
1255    This module supports multiple cards.
1256
1257  Module snd-lx6464es
1258  -------------------
1259
1260    Module for Digigram LX6464ES boards
1261
1262    This module supports multiple cards.
1263
1264  Module snd-maestro3
1265  -------------------
1266
1267    Module for Allegro/Maestro3 chips
1268
1269    external_amp     - enable external amp (enabled by default)
1270    amp_gpio         - GPIO pin number for external amp (0-15) or
1271                       -1 for default pin (8 for allegro, 1 for
1272                       others) 
1273
1274    This module supports autoprobe and multiple chips.
1275
1276    Note: the binding of amplifier is dependent on hardware.
1277    If there is no sound even though all channels are unmuted, try to
1278    specify other gpio connection via amp_gpio option. 
1279    For example, a Panasonic notebook might need "amp_gpio=0x0d"
1280    option.
1281
1282    The power-management is supported.
1283
1284  Module snd-mia
1285  ---------------
1286
1287    Module for Echoaudio Mia
1288
1289    This module supports multiple cards.
1290    The driver requires the firmware loader support on kernel.
1291
1292  Module snd-miro
1293  ---------------
1294
1295    Module for Miro soundcards: miroSOUND PCM 1 pro, 
1296                                miroSOUND PCM 12,
1297                                miroSOUND PCM 20 Radio.
1298
1299    port        - Port # (0x530,0x604,0xe80,0xf40)
1300    irq         - IRQ # (5,7,9,10,11)
1301    dma1        - 1st dma # (0,1,3)
1302    dma2        - 2nd dma # (0,1)
1303    mpu_port    - MPU-401 port # (0x300,0x310,0x320,0x330)
1304    mpu_irq     - MPU-401 irq # (5,7,9,10)
1305    fm_port     - FM Port # (0x388)
1306    wss         - enable WSS mode
1307    ide         - enable onboard ide support
1308
1309  Module snd-mixart
1310  -----------------
1311
1312    Module for Digigram miXart8 sound cards.
1313
1314    This module supports multiple cards.
1315    Note: One miXart8 board will be represented as 4 alsa cards.
1316          See MIXART.txt for details.
1317
1318    When the driver is compiled as a module and the hotplug firmware
1319    is supported, the firmware data is loaded via hotplug automatically.
1320    Install the necessary firmware files in alsa-firmware package.
1321    When no hotplug fw loader is available, you need to load the
1322    firmware via mixartloader utility in alsa-tools package.
1323
1324  Module snd-mona
1325  ---------------
1326
1327    Module for Echoaudio Mona
1328
1329    This module supports multiple cards.
1330    The driver requires the firmware loader support on kernel.
1331
1332  Module snd-mpu401
1333  -----------------
1334
1335    Module for MPU-401 UART devices.
1336
1337    port        - port number or -1 (disable)
1338    irq         - IRQ number or -1 (disable)
1339    pnp         - PnP detection - 0 = disable, 1 = enable (default)
1340
1341    This module supports multiple devices and PnP.
1342    
1343  Module snd-msnd-classic
1344  -----------------------
1345
1346    Module for Turtle Beach MultiSound Classic, Tahiti or Monterey
1347    soundcards.
1348
1349    io          - Port # for msnd-classic card
1350    irq         - IRQ # for msnd-classic card
1351    mem         - Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000,
1352                  0xe0000 or 0xe8000)
1353    write_ndelay - enable write ndelay (default = 1)
1354    calibrate_signal - calibrate signal (default = 0)
1355    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
1356    digital     - Digital daughterboard present (default = 0)
1357    cfg         - Config port (0x250, 0x260 or 0x270) default = PnP
1358    reset       - Reset all devices
1359    mpu_io      - MPU401 I/O port
1360    mpu_irq     - MPU401 irq#
1361    ide_io0     - IDE port #0
1362    ide_io1     - IDE port #1
1363    ide_irq     - IDE irq#
1364    joystick_io - Joystick I/O port
1365
1366    The driver requires firmware files "turtlebeach/msndinit.bin" and
1367    "turtlebeach/msndperm.bin" in the proper firmware directory.
1368
1369    See Documentation/sound/oss/MultiSound for important information
1370    about this driver.  Note that it has been discontinued, but the 
1371    Voyetra Turtle Beach knowledge base entry for it is still available
1372    at
1373        http://www.turtlebeach.com
1374
1375  Module snd-msnd-pinnacle
1376  ------------------------
1377
1378    Module for Turtle Beach MultiSound Pinnacle/Fiji soundcards.
1379
1380    io          - Port # for pinnacle/fiji card
1381    irq         - IRQ # for pinnalce/fiji card
1382    mem         - Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000,
1383                  0xe0000 or 0xe8000)
1384    write_ndelay - enable write ndelay (default = 1)
1385    calibrate_signal - calibrate signal (default = 0)
1386    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
1387
1388    The driver requires firmware files "turtlebeach/pndspini.bin" and
1389    "turtlebeach/pndsperm.bin" in the proper firmware directory.
1390
1391  Module snd-mtpav
1392  ----------------
1393
1394    Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1395    port).
1396
1397    port        - I/O port # for MTPAV (0x378,0x278, default=0x378)
1398    irq         - IRQ # for MTPAV (7,5, default=7)
1399    hwports     - number of supported hardware ports, default=8.
1400    
1401    Module supports only 1 card.  This module has no enable option.
1402
1403  Module snd-mts64
1404  ----------------
1405
1406    Module for Ego Systems (ESI) Miditerminal 4140
1407
1408    This module supports multiple devices.
1409    Requires parport (CONFIG_PARPORT).
1410
1411  Module snd-nm256
1412  ----------------
1413
1414    Module for NeoMagic NM256AV/ZX chips
1415
1416    playback_bufsize - max playback frame size in kB (4-128kB)
1417    capture_bufsize  - max capture frame size in kB (4-128kB)
1418    force_ac97       - 0 or 1 (disabled by default)
1419    buffer_top       - specify buffer top address
1420    use_cache        - 0 or 1 (disabled by default)
1421    vaio_hack        - alias buffer_top=0x25a800
1422    reset_workaround - enable AC97 RESET workaround for some laptops
1423    reset_workaround2 - enable extended AC97 RESET workaround for some
1424                      other laptops
1425
1426    This module supports one chip and autoprobe.
1427
1428    The power-management is supported.
1429
1430    Note: on some notebooks the buffer address cannot be detected
1431    automatically, or causes hang-up during initialization.
1432    In such a case, specify the buffer top address explicitly via
1433    the buffer_top option.
1434    For example,
1435      Sony F250: buffer_top=0x25a800
1436      Sony F270: buffer_top=0x272800
1437    The driver supports only ac97 codec.  It's possible to force
1438    to initialize/use ac97 although it's not detected.  In such a
1439    case, use force_ac97=1 option - but *NO* guarantee whether it
1440    works!
1441
1442    Note: The NM256 chip can be linked internally with non-AC97
1443    codecs.  This driver supports only the AC97 codec, and won't work
1444    with machines with other (most likely CS423x or OPL3SAx) chips,
1445    even though the device is detected in lspci.  In such a case, try
1446    other drivers, e.g. snd-cs4232 or snd-opl3sa2.  Some has ISA-PnP
1447    but some doesn't have ISA PnP.  You'll need to specify isapnp=0
1448    and proper hardware parameters in the case without ISA PnP.
1449
1450    Note: some laptops need a workaround for AC97 RESET.  For the
1451    known hardware like Dell Latitude LS and Sony PCG-F305, this
1452    workaround is enabled automatically.  For other laptops with a
1453    hard freeze, you can try reset_workaround=1 option.
1454
1455    Note: Dell Latitude CSx laptops have another problem regarding
1456    AC97 RESET.  On these laptops, reset_workaround2 option is
1457    turned on as default.  This option is worth to try if the
1458    previous reset_workaround option doesn't help.
1459
1460    Note: This driver is really crappy.  It's a porting from the
1461    OSS driver, which is a result of black-magic reverse engineering.
1462    The detection of codec will fail if the driver is loaded *after*
1463    X-server as described above.  You might be able to force to load
1464    the module, but it may result in hang-up.   Hence, make sure that
1465    you load this module *before* X if you encounter this kind of
1466    problem.
1467
1468  Module snd-opl3sa2
1469  ------------------
1470
1471    Module for Yamaha OPL3-SA2/SA3 sound cards.
1472
1473    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
1474
1475    with isapnp=0, the following options are available:
1476
1477    port        - control port # for OPL3-SA chip (0x370)
1478    sb_port     - SB port # for OPL3-SA chip (0x220,0x240)
1479    wss_port    - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1480    midi_port   - port # for MPU-401 UART (0x300,0x330), -1 = disable
1481    fm_port     - FM port # for OPL3-SA chip (0x388), -1 = disable
1482    irq         - IRQ # for OPL3-SA chip (5,7,9,10)
1483    dma1        - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1484    dma2        - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1485    
1486    This module supports multiple cards and ISA PnP.  It does not support
1487    autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1488    
1489    The power-management is supported.
1490
1491  Module snd-opti92x-ad1848
1492  -------------------------
1493
1494    Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1495    Module works with OAK Mozart cards as well.
1496    
1497    isapnp    - ISA PnP detection - 0 = disable, 1 = enable (default)
1498
1499    with isapnp=0, the following options are available:
1500
1501    port      - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1502    mpu_port  - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1503    fm_port   - port # for OPL3 device (0x388)
1504    irq       - IRQ # for WSS chip (5,7,9,10,11)
1505    mpu_irq   - IRQ # for MPU-401 UART (5,7,9,10)
1506    dma1      - first DMA # for WSS chip (0,1,3)
1507
1508    This module supports only one card, autoprobe and PnP.
1509
1510  Module snd-opti92x-cs4231
1511  -------------------------
1512
1513    Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1514    
1515    isapnp    - ISA PnP detection - 0 = disable, 1 = enable (default)
1516
1517    with isapnp=0, the following options are available:
1518
1519    port      - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1520    mpu_port  - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1521    fm_port   - port # for OPL3 device (0x388)
1522    irq       - IRQ # for WSS chip (5,7,9,10,11)
1523    mpu_irq   - IRQ # for MPU-401 UART (5,7,9,10)
1524    dma1      - first DMA # for WSS chip (0,1,3)
1525    dma2      - second DMA # for WSS chip (0,1,3)
1526
1527    This module supports only one card, autoprobe and PnP.
1528
1529  Module snd-opti93x
1530  ------------------
1531
1532    Module for sound cards based on OPTi 82c93x chips.
1533    
1534    isapnp    - ISA PnP detection - 0 = disable, 1 = enable (default)
1535
1536    with isapnp=0, the following options are available:
1537
1538    port      - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1539    mpu_port  - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1540    fm_port   - port # for OPL3 device (0x388)
1541    irq       - IRQ # for WSS chip (5,7,9,10,11)
1542    mpu_irq   - IRQ # for MPU-401 UART (5,7,9,10)
1543    dma1      - first DMA # for WSS chip (0,1,3)
1544    dma2      - second DMA # for WSS chip (0,1,3)
1545
1546    This module supports only one card, autoprobe and PnP.
1547
1548  Module snd-oxygen
1549  -----------------
1550
1551    Module for sound cards based on the C-Media CMI8786/8787/8788 chip:
1552    * Asound A-8788
1553    * Asus Xonar DG/DGX
1554    * AuzenTech X-Meridian
1555    * AuzenTech X-Meridian 2G
1556    * Bgears b-Enspirer
1557    * Club3D Theatron DTS
1558    * HT-Omega Claro (plus)
1559    * HT-Omega Claro halo (XT)
1560    * Kuroutoshikou CMI8787-HG2PCI
1561    * Razer Barracuda AC-1
1562    * Sondigo Inferno
1563    * TempoTec HiFier Fantasia
1564    * TempoTec HiFier Serenade
1565
1566    This module supports autoprobe and multiple cards.
1567
1568  Module snd-pcsp
1569  -----------------
1570
1571    Module for internal PC-Speaker.
1572
1573    nopcm       - Disable PC-Speaker PCM sound. Only beeps remain.
1574    nforce_wa   - enable NForce chipset workaround. Expect bad sound.
1575
1576    This module supports system beeps, some kind of PCM playback and
1577    even a few mixer controls.
1578
1579  Module snd-pcxhr
1580  ----------------
1581
1582    Module for Digigram PCXHR boards
1583
1584    This module supports multiple cards.
1585
1586  Module snd-portman2x4
1587  ---------------------
1588
1589    Module for Midiman Portman 2x4 parallel port MIDI interface
1590
1591    This module supports multiple cards.
1592
1593  Module snd-powermac (on ppc only)
1594  ---------------------------------
1595
1596    Module for PowerMac, iMac and iBook on-board soundchips
1597
1598    enable_beep     - enable beep using PCM (enabled as default)
1599
1600    Module supports autoprobe a chip.
1601
1602    Note: the driver may have problems regarding endianness.
1603
1604    The power-management is supported.
1605
1606  Module snd-pxa2xx-ac97 (on arm only)
1607  ------------------------------------
1608
1609    Module for AC97 driver for the Intel PXA2xx chip
1610
1611    For ARM architecture only.
1612
1613    The power-management is supported.
1614
1615  Module snd-riptide
1616  ------------------
1617
1618    Module for Conexant Riptide chip
1619
1620      joystick_port     - Joystick port # (default: 0x200)
1621      mpu_port          - MPU401 port # (default: 0x330)
1622      opl3_port         - OPL3 port # (default: 0x388)
1623
1624    This module supports multiple cards.
1625    The driver requires the firmware loader support on kernel.
1626    You need to install the firmware file "riptide.hex" to the standard
1627    firmware path (e.g. /lib/firmware).
1628
1629  Module snd-rme32
1630  ----------------
1631
1632    Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32, 
1633    Prodif96 and Prodif Gold) sound cards.
1634
1635    This module supports multiple cards.
1636
1637  Module snd-rme96
1638  ----------------
1639
1640    Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1641
1642    This module supports multiple cards.
1643
1644  Module snd-rme9652
1645  ------------------
1646
1647    Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1648
1649    precise_ptr - Enable precise pointer (doesn't work reliably).
1650                  (default = 0)
1651
1652    This module supports multiple cards.
1653
1654    Note: snd-page-alloc module does the job which snd-hammerfall-mem
1655          module did formerly.  It will allocate the buffers in advance
1656          when any RME9652 cards are found.  To make the buffer
1657          allocation sure, load snd-page-alloc module in the early
1658          stage of boot sequence.  See "Early Buffer Allocation"
1659          section.
1660
1661  Module snd-sa11xx-uda1341 (on arm only)
1662  ---------------------------------------
1663
1664    Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1665
1666    Module supports only one card.
1667    Module has no enable and index options.
1668
1669    The power-management is supported.
1670
1671  Module snd-sb8
1672  --------------
1673
1674    Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1675                                         SoundBlaster 2.0,
1676                                         SoundBlaster Pro
1677
1678    port        - port # for SB DSP chip (0x220,0x240,0x260)
1679    irq         - IRQ # for SB DSP chip (5,7,9,10)
1680    dma8        - DMA # for SB DSP chip (1,3)
1681
1682    This module supports multiple cards and autoprobe.
1683    
1684    The power-management is supported.
1685
1686  Module snd-sb16 and snd-sbawe
1687  -----------------------------
1688
1689    Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1690                                          SoundBlaster AWE 32 (PnP),
1691                                          SoundBlaster AWE 64 PnP
1692
1693    mic_agc     - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1694    csp         - ASP/CSP chip support - 0 = disable (default), 1 = enable
1695    isapnp      - ISA PnP detection - 0 = disable, 1 = enable (default)
1696
1697    with isapnp=0, the following options are available:
1698
1699    port        - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1700    mpu_port    - port # for MPU-401 UART (0x300,0x330), -1 = disable
1701    awe_port    - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1702                   (snd-sbawe module only)
1703    irq         - IRQ # for SB DSP 4.x chip (5,7,9,10)
1704    dma8        - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1705    dma16       - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1706    
1707    This module supports multiple cards, autoprobe and ISA PnP.
1708
1709    Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1710          disable 16bit DMA with dma16 = -1 module parameter.
1711          Also, all Sound Blaster 16 type cards can operate in 16-bit
1712          half duplex mode through 8-bit DMA channel by disabling their
1713          16-bit DMA channel.
1714    
1715    The power-management is supported.
1716
1717  Module snd-sc6000
1718  -----------------
1719
1720    Module for Gallant SC-6000 soundcard and later models: SC-6600
1721    and SC-7000.
1722
1723    port        - Port # (0x220 or 0x240)
1724    mss_port    - MSS Port # (0x530 or 0xe80)
1725    irq         - IRQ # (5,7,9,10,11)
1726    mpu_irq     - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1727    dma         - DMA # (1,3,0)
1728    joystick    - Enable gameport - 0 = disable (default), 1 = enable
1729
1730    This module supports multiple cards.
1731
1732    This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1733
1734  Module snd-sscape
1735  -----------------
1736
1737    Module for ENSONIQ SoundScape cards.
1738
1739    port        - Port # (PnP setup)
1740    wss_port    - WSS Port # (PnP setup)
1741    irq         - IRQ # (PnP setup)
1742    mpu_irq     - MPU-401 IRQ # (PnP setup)
1743    dma         - DMA # (PnP setup)
1744    dma2        - 2nd DMA # (PnP setup, -1 to disable)
1745    joystick    - Enable gameport - 0 = disable (default), 1 = enable
1746
1747    This module supports multiple cards.
1748
1749    The driver requires the firmware loader support on kernel.
1750
1751  Module snd-sun-amd7930 (on sparc only)
1752  --------------------------------------
1753
1754    Module for AMD7930 sound chips found on Sparcs.
1755
1756    This module supports multiple cards.
1757
1758  Module snd-sun-cs4231 (on sparc only)
1759  -------------------------------------
1760
1761    Module for CS4231 sound chips found on Sparcs.
1762
1763    This module supports multiple cards.
1764
1765  Module snd-sun-dbri (on sparc only)
1766  -----------------------------------
1767
1768    Module for DBRI sound chips found on Sparcs.
1769
1770    This module supports multiple cards.
1771
1772  Module snd-wavefront
1773  --------------------
1774
1775    Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1776
1777    use_cs4232_midi - Use CS4232 MPU-401 interface
1778                      (inaccessibly located inside your computer)
1779    isapnp          - ISA PnP detection - 0 = disable, 1 = enable (default)
1780
1781    with isapnp=0, the following options are available:
1782
1783    cs4232_pcm_port - Port # for CS4232 PCM interface.
1784    cs4232_pcm_irq  - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1785    cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1786    cs4232_mpu_irq  - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1787    ics2115_port    - Port # for ICS2115
1788    ics2115_irq     - IRQ # for ICS2115
1789    fm_port         - FM OPL-3 Port #
1790    dma1            - DMA1 # for CS4232 PCM interface.
1791    dma2            - DMA2 # for CS4232 PCM interface.
1792
1793    The below are options for wavefront_synth features:
1794    wf_raw          - Assume that we need to boot the OS (default:no)
1795        If yes, then during driver loading, the state of the board is
1796        ignored, and we reset the board and load the firmware anyway.
1797    fx_raw          - Assume that the FX process needs help (default:yes)
1798        If false, we'll leave the FX processor in whatever state it is
1799        when the driver is loaded.  The default is to download the
1800        microprogram and associated coefficients to set it up for
1801        "default" operation, whatever that means.
1802    debug_default   - Debug parameters for card initialization
1803    wait_usecs      - How long to wait without sleeping, usecs
1804                      (default:150)
1805        This magic number seems to give pretty optimal throughput
1806        based on my limited experimentation. 
1807        If you want to play around with it and find a better value, be
1808        my guest. Remember, the idea is to get a number that causes us
1809        to just busy wait for as many WaveFront commands as possible,
1810        without coming up with a number so large that we hog the whole
1811        CPU. 
1812        Specifically, with this number, out of about 134,000 status
1813        waits, only about 250 result in a sleep. 
1814    sleep_interval  - How long to sleep when waiting for reply
1815                      (default: 100)
1816    sleep_tries     - How many times to try sleeping during a wait
1817                      (default: 50)
1818    ospath          - Pathname to processed ICS2115 OS firmware
1819                      (default:wavefront.os)
1820        The path name of the ISC2115 OS firmware.  In the recent
1821        version, it's handled via firmware loader framework, so it
1822        must be installed in the proper path, typically,
1823        /lib/firmware.
1824    reset_time      - How long to wait for a reset to take effect
1825                      (default:2)
1826    ramcheck_time   - How many seconds to wait for the RAM test
1827                      (default:20)
1828    osrun_time      - How many seconds to wait for the ICS2115 OS
1829                      (default:10)
1830
1831    This module supports multiple cards and ISA PnP.
1832
1833    Note: the firmware file "wavefront.os" was located in the earlier
1834          version in /etc.  Now it's loaded via firmware loader, and
1835          must be in the proper firmware path, such as /lib/firmware.
1836          Copy (or symlink) the file appropriately if you get an error
1837          regarding firmware downloading after upgrading the kernel.
1838
1839  Module snd-sonicvibes
1840  ---------------------
1841
1842    Module for S3 SonicVibes PCI sound cards.
1843                        * PINE Schubert 32 PCI
1844
1845    reverb    - Reverb Enable - 1 = enable, 0 = disable (default)
1846                  - SoundCard must have onboard SRAM for this.
1847    mge       - Mic Gain Enable - 1 = enable, 0 = disable (default)
1848    
1849    This module supports multiple cards and autoprobe.
1850
1851  Module snd-serial-u16550
1852  ------------------------
1853
1854    Module for UART16550A serial MIDI ports.
1855
1856    port        - port # for UART16550A chip
1857    irq         - IRQ # for UART16550A chip, -1 = poll mode
1858    speed       - speed in bauds (9600,19200,38400,57600,115200)
1859                  38400 = default
1860    base        - base for divisor in bauds (57600,115200,230400,460800)
1861                  115200 = default
1862    outs        - number of MIDI ports in a serial port (1-4)
1863                  1 = default
1864    adaptor     - Type of adaptor.
1865                  0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1866                  3 = MS-124W M/B, 4 = Generic
1867    
1868    This module supports multiple cards. This module does not support autoprobe
1869    thus the main port must be specified!!! Other options are optional.
1870
1871  Module snd-trident
1872  ------------------
1873
1874    Module for Trident 4DWave DX/NX sound cards.
1875                        * Best Union  Miss Melody 4DWave PCI
1876                        * HIS  4DWave PCI
1877                        * Warpspeed  ONSpeed 4DWave PCI
1878                        * AzTech  PCI 64-Q3D
1879                        * Addonics  SV 750
1880                        * CHIC  True Sound 4Dwave
1881                        * Shark  Predator4D-PCI
1882                        * Jaton  SonicWave 4D
1883                        * SiS SI7018 PCI Audio
1884                        * Hoontech SoundTrack Digital 4DWave NX
1885
1886    pcm_channels   - max channels (voices) reserved for PCM
1887    wavetable_size - max wavetable size in kB (4-?kb)
1888
1889    This module supports multiple cards and autoprobe.
1890
1891    The power-management is supported.
1892
1893  Module snd-ua101
1894  ----------------
1895
1896    Module for the Edirol UA-101/UA-1000 audio/MIDI interfaces.
1897
1898    This module supports multiple devices, autoprobe and hotplugging.
1899
1900  Module snd-usb-audio
1901  --------------------
1902
1903    Module for USB audio and USB MIDI devices.
1904
1905    vid             - Vendor ID for the device (optional)
1906    pid             - Product ID for the device (optional)
1907    nrpacks         - Max. number of packets per URB (default: 8)
1908    device_setup    - Device specific magic number (optional)
1909                    - Influence depends on the device
1910                    - Default: 0x0000 
1911    ignore_ctl_error - Ignore any USB-controller regarding mixer
1912                       interface (default: no)
1913
1914    This module supports multiple devices, autoprobe and hotplugging.
1915
1916    NB: nrpacks parameter can be modified dynamically via sysfs.
1917        Don't put the value over 20.  Changing via sysfs has no sanity
1918        check.
1919    NB: ignore_ctl_error=1 may help when you get an error at accessing
1920        the mixer element such as URB error -22.  This happens on some
1921        buggy USB device or the controller.
1922
1923  Module snd-usb-caiaq
1924  --------------------
1925
1926    Module for caiaq UB audio interfaces,
1927            * Native Instruments RigKontrol2
1928            * Native Instruments Kore Controller
1929            * Native Instruments Audio Kontrol 1
1930            * Native Instruments Audio 8 DJ
1931
1932    This module supports multiple devices, autoprobe and hotplugging.
1933
1934  Module snd-usb-usx2y
1935  --------------------
1936
1937    Module for Tascam USB US-122, US-224 and US-428 devices.
1938
1939    This module supports multiple devices, autoprobe and hotplugging.
1940
1941    Note: you need to load the firmware via usx2yloader utility included
1942          in alsa-tools and alsa-firmware packages.
1943
1944  Module snd-via82xx
1945  ------------------
1946
1947    Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1948    8233A, 8233C, 8235, 8237 (south) bridge.
1949
1950    mpu_port    - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1951                  [VIA686A/686B only]
1952    joystick    - Enable joystick (default off) [VIA686A/686B only]
1953    ac97_clock  - AC'97 codec clock base (default 48000Hz)
1954    dxs_support - support DXS channels,
1955                  0 = auto (default), 1 = enable, 2 = disable,
1956                  3 = 48k only, 4 = no VRA, 5 = enable any sample
1957                  rate and different sample rates on different
1958                  channels
1959                  [VIA8233/C, 8235, 8237 only]
1960    ac97_quirk  - AC'97 workaround for strange hardware
1961                  See "AC97 Quirk Option" section below.
1962
1963    This module supports one chip and autoprobe.
1964
1965    Note: on some SMP motherboards like MSI 694D the interrupts might
1966          not be generated properly.  In such a case, please try to
1967          set the SMP (or MPS) version on BIOS to 1.1 instead of
1968          default value 1.4.  Then the interrupt number will be
1969          assigned under 15. You might also upgrade your BIOS.
1970    
1971    Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1972          channels as the first PCM.  On these channels, up to 4
1973          streams can be played at the same time, and the controller
1974          can perform sample rate conversion with separate rates for
1975          each channel.
1976          As default (dxs_support = 0), 48k fixed rate is chosen
1977          except for the known devices since the output is often
1978          noisy except for 48k on some mother boards due to the
1979          bug of BIOS.
1980          Please try once dxs_support=5 and if it works on other
1981          sample rates (e.g. 44.1kHz of mp3 playback), please let us
1982          know the PCI subsystem vendor/device id's (output of
1983          "lspci -nv").
1984          If dxs_support=5 does not work, try dxs_support=4; if it
1985          doesn't work too, try dxs_support=1.  (dxs_support=1 is
1986          usually for old motherboards.  The correct implemented
1987          board should work with 4 or 5.)  If it still doesn't
1988          work and the default setting is ok, dxs_support=3 is the
1989          right choice.  If the default setting doesn't work at all,
1990          try dxs_support=2 to disable the DXS channels.
1991          In any cases, please let us know the result and the
1992          subsystem vendor/device ids.  See "Links and Addresses"
1993          below.
1994
1995    Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1996          additionally.  The mpu_port option is for VIA686 chips only.
1997
1998    The power-management is supported.
1999
2000  Module snd-via82xx-modem
2001  ------------------------
2002
2003    Module for VIA82xx AC97 modem
2004
2005    ac97_clock  - AC'97 codec clock base (default 48000Hz)
2006
2007    This module supports one card and autoprobe.
2008
2009    Note: The default index value of this module is -2, i.e. the first
2010          slot is excluded.
2011
2012    The power-management is supported.
2013
2014  Module snd-virmidi
2015  ------------------
2016
2017    Module for virtual rawmidi devices.
2018    This module creates virtual rawmidi devices which communicate
2019    to the corresponding ALSA sequencer ports.
2020
2021    midi_devs   - MIDI devices # (1-4, default=4)
2022    
2023    This module supports multiple cards.
2024
2025  Module snd-virtuoso
2026  -------------------
2027
2028    Module for sound cards based on the Asus AV66/AV100/AV200 chips,
2029    i.e., Xonar D1, DX, D2, D2X, DS, Essence ST (Deluxe), Essence STX,
2030    HDAV1.3 (Deluxe), and HDAV1.3 Slim.
2031
2032    This module supports autoprobe and multiple cards.
2033
2034  Module snd-vx222
2035  ----------------
2036
2037    Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2038
2039    mic         - Enable Microphone on V222 Mic (NYI)
2040    ibl         - Capture IBL size. (default = 0, minimum size)
2041
2042    This module supports multiple cards.
2043
2044    When the driver is compiled as a module and the hotplug firmware
2045    is supported, the firmware data is loaded via hotplug automatically.
2046    Install the necessary firmware files in alsa-firmware package.
2047    When no hotplug fw loader is available, you need to load the
2048    firmware via vxloader utility in alsa-tools package.  To invoke
2049    vxloader automatically, add the following to /etc/modprobe.d/alsa.conf
2050
2051        install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2052
2053    (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2054     /etc/modules.conf, instead.)
2055    IBL size defines the interrupts period for PCM.  The smaller size
2056    gives smaller latency but leads to more CPU consumption, too.
2057    The size is usually aligned to 126.  As default (=0), the smallest
2058    size is chosen.  The possible IBL values can be found in
2059    /proc/asound/cardX/vx-status proc file.
2060
2061    The power-management is supported.
2062
2063  Module snd-vxpocket
2064  -------------------
2065
2066    Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2067
2068    ibl      - Capture IBL size. (default = 0, minimum size)
2069
2070    This module supports multiple cards.  The module is compiled only when
2071    PCMCIA is supported on kernel.
2072
2073    With the older 2.6.x kernel, to activate the driver via the card
2074    manager, you'll need to set up /etc/pcmcia/vxpocket.conf.  See the
2075    sound/pcmcia/vx/vxpocket.c.  2.6.13 or later kernel requires no
2076    longer require a config file.
2077
2078    When the driver is compiled as a module and the hotplug firmware
2079    is supported, the firmware data is loaded via hotplug automatically.
2080    Install the necessary firmware files in alsa-firmware package.
2081    When no hotplug fw loader is available, you need to load the
2082    firmware via vxloader utility in alsa-tools package.
2083
2084    About capture IBL, see the description of snd-vx222 module.
2085
2086    Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2087           ALSA 1.0.10.
2088
2089    The power-management is supported.
2090
2091  Module snd-ymfpci
2092  -----------------
2093
2094    Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2095
2096    mpu_port      - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2097                    1 (auto-detect for YMF744/754 only)
2098    fm_port       - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2099                    1 (auto-detect for YMF744/754 only)
2100    joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2101                    1 (auto-detect)
2102    rear_switch   - enable shared rear/line-in switch (bool)
2103
2104    This module supports autoprobe and multiple chips.
2105
2106    The power-management is supported.
2107
2108  Module snd-pdaudiocf
2109  --------------------
2110
2111    Module for Sound Core PDAudioCF sound card.
2112
2113    The power-management is supported.
2114
2115
2116AC97 Quirk Option
2117=================
2118
2119The ac97_quirk option is used to enable/override the workaround for
2120specific devices on drivers for on-board AC'97 controllers like
2121snd-intel8x0.  Some hardware have swapped output pins between Master
2122and Headphone, or Surround (thanks to confusion of AC'97
2123specifications from version to version :-)
2124
2125The driver provides the auto-detection of known problematic devices,
2126but some might be unknown or wrongly detected.  In such a case, pass
2127the proper value with this option.
2128
2129The following strings are accepted:
2130    - default   Don't override the default setting
2131    - none      Disable the quirk
2132    - hp_only   Bind Master and Headphone controls as a single control
2133    - swap_hp   Swap headphone and master controls
2134    - swap_surround  Swap master and surround controls
2135    - ad_sharing  For AD1985, turn on OMS bit and use headphone
2136    - alc_jack  For ALC65x, turn on the jack sense mode
2137    - inv_eapd  Inverted EAPD implementation
2138    - mute_led  Bind EAPD bit for turning on/off mute LED
2139
2140For backward compatibility, the corresponding integer value -1, 0,
2141... are  accepted, too.
2142
2143For example, if "Master" volume control has no effect on your device
2144but only "Headphone" does, pass ac97_quirk=hp_only module option.
2145
2146
2147Configuring Non-ISAPNP Cards
2148============================
2149
2150When the kernel is configured with ISA-PnP support, the modules
2151supporting the isapnp cards will have module options "isapnp".
2152If this option is set, *only* the ISA-PnP devices will be probed.
2153For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2154together with the proper i/o and irq configuration.
2155
2156When the kernel is configured without ISA-PnP support, isapnp option
2157will be not built in.
2158
2159
2160Module Autoloading Support
2161==========================
2162
2163The ALSA drivers can be loaded automatically on demand by defining
2164module aliases.  The string 'snd-card-%1' is requested for ALSA native
2165devices where %i is sound card number from zero to seven.
2166
2167To auto-load an ALSA driver for OSS services, define the string
2168'sound-slot-%i' where %i means the slot number for OSS, which
2169corresponds to the card index of ALSA.  Usually, define this
2170as the same card module.
2171
2172An example configuration for a single emu10k1 card is like below:
2173----- /etc/modprobe.d/alsa.conf
2174alias snd-card-0 snd-emu10k1
2175alias sound-slot-0 snd-emu10k1
2176----- /etc/modprobe.d/alsa.conf
2177
2178The available number of auto-loaded sound cards depends on the module
2179option "cards_limit" of snd module.  As default it's set to 1.
2180To enable the auto-loading of multiple cards, specify the number of
2181sound cards in that option.
2182
2183When multiple cards are available, it'd better to specify the index
2184number for each card via module option, too, so that the order of
2185cards is kept consistent.
2186
2187An example configuration for two sound cards is like below:
2188
2189----- /etc/modprobe.d/alsa.conf
2190# ALSA portion
2191options snd cards_limit=2
2192alias snd-card-0 snd-interwave
2193alias snd-card-1 snd-ens1371
2194options snd-interwave index=0
2195options snd-ens1371 index=1
2196# OSS/Free portion
2197alias sound-slot-0 snd-interwave
2198alias sound-slot-1 snd-ens1371
2199----- /etc/modprobe.d/alsa.conf
2200
2201In this example, the interwave card is always loaded as the first card
2202(index 0) and ens1371 as the second (index 1).
2203
2204Alternative (and new) way to fixate the slot assignment is to use
2205"slots" option of snd module.  In the case above, specify like the
2206following: 
2207
2208options snd slots=snd-interwave,snd-ens1371
2209
2210Then, the first slot (#0) is reserved for snd-interwave driver, and
2211the second (#1) for snd-ens1371.  You can omit index option in each
2212driver if slots option is used (although you can still have them at
2213the same time as long as they don't conflict).
2214
2215The slots option is especially useful for avoiding the possible
2216hot-plugging and the resultant slot conflict.  For example, in the
2217case above again, the first two slots are already reserved.  If any
2218other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2219snd-ens1371, it will be assigned to the third or later slot.
2220
2221When a module name is given with '!', the slot will be given for any
2222modules but that name.  For example, "slots=!snd-pcsp" will reserve
2223the first slot for any modules but snd-pcsp. 
2224
2225
2226ALSA PCM devices to OSS devices mapping
2227=======================================
2228
2229/dev/snd/pcmC0D0[c|p]  -> /dev/audio0 (/dev/audio) -> minor 4
2230/dev/snd/pcmC0D0[c|p]  -> /dev/dsp0 (/dev/dsp)     -> minor 3
2231/dev/snd/pcmC0D1[c|p]  -> /dev/adsp0 (/dev/adsp)   -> minor 12
2232/dev/snd/pcmC1D0[c|p]  -> /dev/audio1              -> minor 4+16 = 20
2233/dev/snd/pcmC1D0[c|p]  -> /dev/dsp1                -> minor 3+16 = 19
2234/dev/snd/pcmC1D1[c|p]  -> /dev/adsp1               -> minor 12+16 = 28
2235/dev/snd/pcmC2D0[c|p]  -> /dev/audio2              -> minor 4+32 = 36
2236/dev/snd/pcmC2D0[c|p]  -> /dev/dsp2                -> minor 3+32 = 39
2237/dev/snd/pcmC2D1[c|p]  -> /dev/adsp2               -> minor 12+32 = 44
2238
2239The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2240sound card number and second means device number.  The ALSA devices
2241have either 'c' or 'p' suffix indicating the direction, capture and
2242playback, respectively.
2243
2244Please note that the device mapping above may be varied via the module
2245options of snd-pcm-oss module.
2246
2247
2248Proc interfaces (/proc/asound)
2249==============================
2250
2251/proc/asound/card#/pcm#[cp]/oss
2252-------------------------------
2253  String "erase" - erase all additional information about OSS applications
2254  String "<app_name> <fragments> <fragment_size> [<options>]"
2255
2256   <app_name> - name of application with (higher priority) or without path
2257   <fragments> - number of fragments or zero if auto
2258   <fragment_size> - size of fragment in bytes or zero if auto
2259   <options> - optional parameters
2260          - disable   the application tries to open a pcm device for
2261                      this channel but does not want to use it.
2262                      (Cause a bug or mmap needs)
2263                      It's good for Quake etc...
2264          - direct    don't use plugins
2265          - block     force block mode (rvplayer)
2266          - non-block force non-block mode
2267          - whole-frag  write only whole fragments (optimization affecting
2268                        playback only)
2269          - no-silence  do not fill silence ahead to avoid clicks
2270          - buggy-ptr   Returns the whitespace blocks in GETOPTR ioctl
2271                        instead of filled blocks
2272
2273  Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2274           echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2275           echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2276
2277
2278Early Buffer Allocation
2279=======================
2280
2281Some drivers (e.g. hdsp) require the large contiguous buffers, and
2282sometimes it's too late to find such spaces when the driver module is
2283actually loaded due to memory fragmentation.  You can pre-allocate the
2284PCM buffers by loading snd-page-alloc module and write commands to its
2285proc file in prior, for example, in the early boot stage like
2286/etc/init.d/*.local scripts.
2287
2288Reading the proc file /proc/drivers/snd-page-alloc shows the current
2289usage of page allocation.  In writing, you can send the following
2290commands to the snd-page-alloc driver:
2291
2292  - add VENDOR DEVICE MASK SIZE BUFFERS
2293
2294    VENDOR and DEVICE are PCI vendor and device IDs.  They take
2295    integer numbers (0x prefix is needed for the hex).
2296    MASK is the PCI DMA mask.  Pass 0 if not restricted.
2297    SIZE is the size of each buffer to allocate.  You can pass
2298    k and m suffix for KB and MB.  The max number is 16MB.
2299    BUFFERS is the number of buffers to allocate.  It must be greater
2300    than 0.  The max number is 4.
2301
2302  - erase
2303
2304    This will erase the all pre-allocated buffers which are not in
2305    use.
2306
2307
2308Links and Addresses
2309===================
2310
2311  ALSA project homepage
2312       http://www.alsa-project.org
2313
2314  Kernel Bugzilla
2315       http://bugzilla.kernel.org/
2316
2317  ALSA Developers ML
2318       mailto:alsa-devel@alsa-project.org
2319
2320  alsa-info.sh script
2321       http://www.alsa-project.org/alsa-info.sh
2322