| changeset 5084: | ff3ed7049f84 |
| parent: | d4e8100fabc5 |
| child: | dd701601157b |
| author: | tiwai |
| date: | Tue May 29 16:03:00 2007 +0200 (4 years ago) |
| permissions: | -rw-r--r-- |
| description: | hda-codec - Fix pin configs for Intel Macs * adds the pinconfigs for all 5 Apple boards and 14 Subsystem IDs (support for possibly all iMac, Mac, MacMini etc etc) * adds "intel-mac-v1" to v5 models which replace the current * reflects changes in Alsa-Configuration.txt Patch-level: ASAP Signed-off-by: Ivan N. Zlatev <contact@i-nz.net> |
12 Advanced Linux Sound Architecture - Driver3 ==========================================4 Configuration guide567Kernel Configuration8====================910To enable ALSA support you need at least to build the kernel with11primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,12you don't have to choose any of the OSS modules.1314Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and15PCM supports if you want to run OSS applications with ALSA.1617If you want to support the WaveTable functionality on cards such as18SB Live! then you need to enable "Sequencer support"19(CONFIG_SND_SEQUENCER).2021To 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.2425Please note that all the ALSA ISA drivers support the Linux isapnp API26(if the card supports ISA PnP). You don't need to configure the cards27using isapnptools.282930Creating ALSA devices31=====================3233This depends on your distribution, but normally you use the /dev/MAKEDEV34script to create the necessary device nodes. On some systems you use a35script named 'snddevices'.363738Module parameters39=================4041The user can load modules with options. If the module supports more than42one card and you have more than one card of the same type then you can43specify multiple values for the option separated by commas.4445Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.4647 Module snd48 ----------4950 The core ALSA module. It is used by all ALSA card drivers.51 It takes the following options which have global effects.5253 major - major number for sound driver54 - Default: 11655 cards_limit56 - limiting card index for auto-loading (1-8)57 - Default: 158 - For auto-loading more than one card, specify this59 option together with snd-card-X aliases.606162 Module snd-pcm-oss63 ------------------6465 The PCM OSS emulation module.66 This module takes options which change the mapping of devices.6768 dsp_map - PCM device number maps assigned to the 1st OSS device.69 - Default: 070 adsp_map - PCM device number maps assigned to the 2st OSS device.71 - Default: 172 nonblock_open73 - Don't block opening busy PCM devices. Default: 17475 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of76 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped77 to PCM #0 of the card #0.78 For changing the second or later card, specify the option with79 commas, such like "dsp_map=0,1".8081 nonblock_open option is used to change the behavior of the PCM82 regarding opening the device. When this option is non-zero,83 opening a busy OSS PCM device won't be blocked but return84 immediately with EAGAIN (just like O_NONBLOCK flag).8586 Module snd-rawmidi87 ------------------8889 This module takes options which change the mapping of devices.90 similar to those of the snd-pcm-oss module.9192 midi_map - MIDI device number maps assigned to the 1st OSS device.93 - Default: 094 amidi_map - MIDI device number maps assigned to the 2st OSS device.95 - Default: 19697 Common parameters for top sound card modules98 --------------------------------------------99100 Each of top level sound card module takes the following options.101102 index - index (slot #) of sound card103 - Values: 0 through 31 or negative104 - If nonnegative, assign that index number105 - if negative, interpret as a bitmask of permissible106 indices; the first free permitted index is assigned107 - Default: -1108 id - card ID (identifier or name)109 - Can be up to 15 characters long110 - Default: the card type111 - A directory by this name is created under /proc/asound/112 containing information about the card113 - This ID can be used instead of the index number in114 identifying the card115 enable - enable card116 - Default: enabled, for PCI and ISA PnP cards117118 Module snd-adlib119 ----------------120121 Module for AdLib FM cards.122123 port - port # for OPL chip124125 This module supports multiple cards. It does not support autoprobe, so126 the port must be specified. For actual AdLib FM cards it will be 0x388.127 Note that this card does not have PCM support and no mixer; only FM128 synthesis.129130 Make sure you have "sbiload" from the alsa-tools package available and,131 after loading the module, find out the assigned ALSA sequencer port132 number through "sbiload -l". Example output:133134 Port Client name Port name135 64:0 OPL2 FM synth OPL2 FM Port136137 Load the std.sb and drums.sb patches also supplied by sbiload:138139 sbiload -p 64:0 std.sb drums.sb140141 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3142 instead. To have the card produce sound, use aplaymidi from alsa-utils:143144 aplaymidi -p 64:0 foo.mid145146 Module snd-ad1816a147 ------------------148149 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.150151 port - port # for AD1816A chip (PnP setup)152 mpu_port - port # for MPU-401 UART (PnP setup)153 fm_port - port # for OPL3 (PnP setup)154 irq - IRQ # for AD1816A chip (PnP setup)155 mpu_irq - IRQ # for MPU-401 UART (PnP setup)156 dma1 - first DMA # for AD1816A chip (PnP setup)157 dma2 - second DMA # for AD1816A chip (PnP setup)158 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)159160 This module supports multiple cards, autoprobe and PnP.161162 Module snd-ad1848163 -----------------164165 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.166167 port - port # for AD1848 chip168 irq - IRQ # for AD1848 chip169 dma1 - DMA # for AD1848 chip (0,1,3)170171 This module supports multiple cards. It does not support autoprobe172 thus main port must be specified!!! Other ports are optional.173174 The power-management is supported.175176 Module snd-ad1889177 -----------------178179 Module for Analog Devices AD1889 chips.180181 ac97_quirk - AC'97 workaround for strange hardware182 See the description of intel8x0 module for details.183184 This module supports multiple cards.185186 Module snd-ali5451187 ------------------188189 Module for ALi M5451 PCI chip.190191 pcm_channels - Number of hardware channels assigned for PCM192 spdif - Support SPDIF I/O193 - Default: disabled194195 This module supports one chip and autoprobe.196197 The power-management is supported.198199 Module snd-als100200 -----------------201202 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.203204 port - port # for ALS100 (SB16) chip (PnP setup)205 irq - IRQ # for ALS100 (SB16) chip (PnP setup)206 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)207 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)208 mpu_port - port # for MPU-401 UART (PnP setup)209 mpu_irq - IRQ # for MPU-401 (PnP setup)210 fm_port - port # for OPL3 FM (PnP setup)211212 This module supports multiple cards, autoprobe and PnP.213214 The power-management is supported.215216 Module snd-als300217 -----------------218219 Module for Avance Logic ALS300 and ALS300+220221 This module supports multiple cards.222223 The power-management is supported.224225 Module snd-als4000226 ------------------227228 Module for sound cards based on Avance Logic ALS4000 PCI chip.229230 joystick_port - port # for legacy joystick support.231 0 = disabled (default), 1 = auto-detect232233 This module supports multiple cards, autoprobe and PnP.234235 The power-management is supported.236237 Module snd-atiixp238 -----------------239240 Module for ATI IXP 150/200/250/400 AC97 controllers.241242 ac97_clock - AC'97 clock (default = 48000)243 ac97_quirk - AC'97 workaround for strange hardware244 See "AC97 Quirk Option" section below.245 ac97_codec - Workaround to specify which AC'97 codec246 instead of probing. If this works for you247 file a bug with your `lspci -vn` output.248 -2 -- Force probing.249 -1 -- Default behavior.250 0-2 -- Use the specified codec.251 spdif_aclink - S/PDIF transfer over AC-link (default = 1)252253 This module supports one card and autoprobe.254255 ATI IXP has two different methods to control SPDIF output. One is256 over AC-link and another is over the "direct" SPDIF output. The257 implementation depends on the motherboard, and you'll need to258 choose the correct one via spdif_aclink module option.259260 The power-management is supported.261262 Module snd-atiixp-modem263 -----------------------264265 Module for ATI IXP 150/200/250 AC97 modem controllers.266267 This module supports one card and autoprobe.268269 Note: The default index value of this module is -2, i.e. the first270 slot is excluded.271272 The power-management is supported.273274 Module snd-au8810, snd-au8820, snd-au8830275 -----------------------------------------276277 Module for Aureal Vortex, Vortex2 and Advantage device.278279 pcifix - Control PCI workarounds280 0 = Disable all workarounds281 1 = Force the PCI latency of the Aureal card to 0xff282 2 = Force the Extend PCI#2 Internal Master for Efficient283 Handling of Dummy Requests on the VIA KT133 AGP Bridge284 3 = Force both settings285 255 = Autodetect what is required (default)286287 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware288 EQ, mpu401, gameport. A3D and wavetable support are still in development.289 Development and reverse engineering work is being coordinated at290 http://savannah.nongnu.org/projects/openvortex/291 SPDIF output has a copy of the AC97 codec output, unless you use the292 "spdif" pcm device, which allows raw data passthru.293 The hardware EQ hardware and SPDIF is only present in the Vortex2 and294 Advantage.295296 Note: Some ALSA mixer applications don't handle the SPDIF sample rate297 control correctly. If you have problems regarding this, try298 another ALSA compliant mixer (alsamixer works).299300 Module snd-azt2320301 ------------------302303 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).304305 port - port # for AZT2320 chip (PnP setup)306 wss_port - port # for WSS (PnP setup)307 mpu_port - port # for MPU-401 UART (PnP setup)308 fm_port - FM port # for AZT2320 chip (PnP setup)309 irq - IRQ # for AZT2320 (WSS) chip (PnP setup)310 mpu_irq - IRQ # for MPU-401 UART (PnP setup)311 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)312 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)313314 This module supports multiple cards, PnP and autoprobe.315316 The power-management is supported.317318 Module snd-azt3328319 ------------------320321 Module for sound cards based on Aztech AZF3328 PCI chip.322323 joystick - Enable joystick (default off)324325 This module supports multiple cards.326327 Module snd-bt87x328 ----------------329330 Module for video cards based on Bt87x chips.331332 digital_rate - Override the default digital rate (Hz)333 load_all - Load the driver even if the card model isn't known334335 This module supports multiple cards.336337 Note: The default index value of this module is -2, i.e. the first338 slot is excluded.339340 Module snd-ca0106341 -----------------342343 Module for Creative Audigy LS and SB Live 24bit344345 This module supports multiple cards.346347348 Module snd-cmi8330349 ------------------350351 Module for sound cards based on C-Media CMI8330 ISA chips.352353 wssport - port # for CMI8330 chip (WSS)354 wssirq - IRQ # for CMI8330 chip (WSS)355 wssdma - first DMA # for CMI8330 chip (WSS)356 sbport - port # for CMI8330 chip (SB16)357 sbirq - IRQ # for CMI8330 chip (SB16)358 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)359 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)360361 This module supports multiple cards and autoprobe.362363 The power-management is supported.364365 Module snd-cmipci366 -----------------367368 Module for C-Media CMI8338 and 8738 PCI sound cards.369370 mpu_port - 0x300,0x310,0x320,0x330 = legacy port,371 1 = integrated PCI port,372 0 = disable (default)373 fm_port - 0x388 = legacy port,374 1 = integrated PCI port (default),375 0 = disable376 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)377 (default = 1)378 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)379380 This module supports autoprobe and multiple cards.381382 The power-management is supported.383384 Module snd-cs4231385 -----------------386387 Module for sound cards based on CS4231 ISA chips.388389 port - port # for CS4231 chip390 mpu_port - port # for MPU-401 UART (optional), -1 = disable391 irq - IRQ # for CS4231 chip392 mpu_irq - IRQ # for MPU-401 UART393 dma1 - first DMA # for CS4231 chip394 dma2 - second DMA # for CS4231 chip395396 This module supports multiple cards. This module does not support autoprobe397 thus main port must be specified!!! Other ports are optional.398399 The power-management is supported.400401 Module snd-cs4232402 -----------------403404 Module for sound cards based on CS4232/CS4232A ISA chips.405406 port - port # for CS4232 chip (PnP setup - 0x534)407 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)408 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable409 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable410 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)411 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)412 dma1 - first DMA # for CS4232 chip (0,1,3)413 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable414 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)415416 This module supports multiple cards. This module does not support autoprobe417 thus main port must be specified!!! Other ports are optional.418419 The power-management is supported.420421 Module snd-cs4236422 -----------------423424 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/425 CS4238B/CS4239 ISA chips.426427 port - port # for CS4236 chip (PnP setup - 0x534)428 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)429 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable430 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable431 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)432 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)433 dma1 - first DMA # for CS4236 chip (0,1,3)434 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable435 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)436437 This module supports multiple cards. This module does not support autoprobe438 (if ISA PnP is not used) thus main port and control port must be439 specified!!! Other ports are optional.440441 The power-management is supported.442443 Module snd-cs4281444 -----------------445446 Module for Cirrus Logic CS4281 soundchip.447448 dual_codec - Secondary codec ID (0 = disable, default)449450 This module supports multiple cards.451452 The power-management is supported.453454 Module snd-cs46xx455 -----------------456457 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/458 CS4624/CS4630/CS4280 PCI chips.459460 external_amp - Force to enable external amplifier.461 thinkpad - Force to enable Thinkpad's CLKRUN control.462 mmap_valid - Support OSS mmap mode (default = 0).463464 This module supports multiple cards and autoprobe.465 Usually external amp and CLKRUN controls are detected automatically466 from PCI sub vendor/device ids. If they don't work, give the options467 above explicitly.468469 The power-management is supported.470471 Module snd-cs5530472 _________________473474 Module for Cyrix/NatSemi Geode 5530 chip.475476 Module snd-cs5535audio477 ----------------------478479 Module for multifunction CS5535 companion PCI device480481 The power-management is supported.482483 Module snd-darla20484 ------------------485486 Module for Echoaudio Darla20487488 This module supports multiple cards.489 The driver requires the firmware loader support on kernel.490491 Module snd-darla24492 ------------------493494 Module for Echoaudio Darla24495496 This module supports multiple cards.497 The driver requires the firmware loader support on kernel.498499 Module snd-dt019x500 -----------------501502 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP503 only)504505 port - Port # (PnP setup)506 mpu_port - Port # for MPU-401 (PnP setup)507 fm_port - Port # for FM OPL-3 (PnP setup)508 irq - IRQ # (PnP setup)509 mpu_irq - IRQ # for MPU-401 (PnP setup)510 dma8 - DMA # (PnP setup)511512 This module supports multiple cards. This module is enabled only with513 ISA PnP support.514515 The power-management is supported.516517 Module snd-dummy518 ----------------519520 Module for the dummy sound card. This "card" doesn't do any output521 or input, but you may use this module for any application which522 requires a sound card (like RealPlayer).523524 The power-management is supported.525526 Module snd-echo3g527 -----------------528529 Module for Echoaudio 3G cards (Gina3G/Layla3G)530531 This module supports multiple cards.532 The driver requires the firmware loader support on kernel.533534 Module snd-emu10k1535 ------------------536537 Module for EMU10K1/EMU10k2 based PCI sound cards.538 * Sound Blaster Live!539 * Sound Blaster PCI 512540 * Emu APS (partially supported)541 * Sound Blaster Audigy542543 extin - bitmap of available external inputs for FX8010 (see bellow)544 extout - bitmap of available external outputs for FX8010 (see bellow)545 seq_ports - allocated sequencer ports (4 by default)546 max_synth_voices - limit of voices used for wavetable (64 by default)547 max_buffer_size - specifies the maximum size of wavetable/pcm buffers548 given in MB unit. Default value is 128.549 enable_ir - enable IR550551 This module supports multiple cards and autoprobe.552553 Input & Output configurations [extin/extout]554 * Creative Card wo/Digital out [0x0003/0x1f03]555 * Creative Card w/Digital out [0x0003/0x1f0f]556 * Creative Card w/Digital CD in [0x000f/0x1f0f]557 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]558 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]559 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]560 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]561 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]562 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]563 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]564 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]565 * Creative Card all ins and outs [0x3fff/0x7fff]566567 The power-management is supported.568569 Module snd-emu10k1x570 -------------------571572 Module for Creative Emu10k1X (SB Live Dell OEM version)573574 This module supports multiple cards.575576 Module snd-ens1370577 ------------------578579 Module for Ensoniq AudioPCI ES1370 PCI sound cards.580 * SoundBlaster PCI 64581 * SoundBlaster PCI 128582583 joystick - Enable joystick (default off)584585 This module supports multiple cards and autoprobe.586587 The power-management is supported.588589 Module snd-ens1371590 ------------------591592 Module for Ensoniq AudioPCI ES1371 PCI sound cards.593 * SoundBlaster PCI 64594 * SoundBlaster PCI 128595 * SoundBlaster Vibra PCI596597 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),598 0 = disable (default), 1 = auto-detect599600 This module supports multiple cards and autoprobe.601602 The power-management is supported.603604 Module snd-es968605 ----------------606607 Module for sound cards based on ESS ES968 chip (PnP only).608609 port - port # for ES968 (SB8) chip (PnP setup)610 irq - IRQ # for ES968 (SB8) chip (PnP setup)611 dma1 - DMA # for ES968 (SB8) chip (PnP setup)612613 This module supports multiple cards, PnP and autoprobe.614615 The power-management is supported.616617 Module snd-es1688618 -----------------619620 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.621622 port - port # for ES-1688 chip (0x220,0x240,0x260)623 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)624 irq - IRQ # for ES-1688 chip (5,7,9,10)625 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)626 dma8 - DMA # for ES-1688 chip (0,1,3)627628 This module supports multiple cards and autoprobe (without MPU-401 port).629630 Module snd-es18xx631 -----------------632633 Module for ESS AudioDrive ES-18xx sound cards.634635 port - port # for ES-18xx chip (0x220,0x240,0x260)636 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)637 fm_port - port # for FM (optional, not used)638 irq - IRQ # for ES-18xx chip (5,7,9,10)639 dma1 - first DMA # for ES-18xx chip (0,1,3)640 dma2 - first DMA # for ES-18xx chip (0,1,3)641 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)642643 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401644 port if native ISA PnP routines are not used).645 When dma2 is equal with dma1, the driver works as half-duplex.646647 The power-management is supported.648649 Module snd-es1938650 -----------------651652 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.653654 This module supports multiple cards and autoprobe.655656 The power-management is supported.657658 Module snd-es1968659 -----------------660661 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.662663 total_bufsize - total buffer size in kB (1-4096kB)664 pcm_substreams_p - playback channels (1-8, default=2)665 pcm_substreams_c - capture channels (1-8, default=0)666 clock - clock (0 = auto-detection)667 use_pm - support the power-management (0 = off, 1 = on,668 2 = auto (default))669 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))670 joystick - enable joystick (default off)671672 This module supports multiple cards and autoprobe.673674 The power-management is supported.675676 Module snd-fm801677 ----------------678679 Module for ForteMedia FM801 based PCI sound cards.680681 tea575x_tuner - Enable TEA575x tuner682 - 1 = MediaForte 256-PCS683 - 2 = MediaForte 256-PCPR684 - 3 = MediaForte 64-PCR685 - High 16-bits are video (radio) device number + 1686 - example: 0x10002 (MediaForte 256-PCPR, device 1)687688 This module supports multiple cards and autoprobe.689690 The power-management is supported.691692 Module snd-gina20693 -----------------694695 Module for Echoaudio Gina20696697 This module supports multiple cards.698 The driver requires the firmware loader support on kernel.699700 Module snd-gina24701 -----------------702703 Module for Echoaudio Gina24704705 This module supports multiple cards.706 The driver requires the firmware loader support on kernel.707708 Module snd-gusclassic709 ---------------------710711 Module for Gravis UltraSound Classic sound card.712713 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)714 irq - IRQ # for GF1 chip (3,5,9,11,12,15)715 dma1 - DMA # for GF1 chip (1,3,5,6,7)716 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)717 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)718 voices - GF1 voices limit (14-32)719 pcm_voices - reserved PCM voices720721 This module supports multiple cards and autoprobe.722723 Module snd-gusextreme724 ---------------------725726 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.727728 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)729 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)730 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable731 irq - IRQ # for ES-1688 chip (5,7,9,10)732 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)733 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)734 dma8 - DMA # for ES-1688 chip (0,1,3)735 dma1 - DMA # for GF1 chip (1,3,5,6,7)736 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)737 voices - GF1 voices limit (14-32)738 pcm_voices - reserved PCM voices739740 This module supports multiple cards and autoprobe (without MPU-401 port).741742 Module snd-gusmax743 -----------------744745 Module for Gravis UltraSound MAX sound card.746747 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)748 irq - IRQ # for GF1 chip (3,5,9,11,12,15)749 dma1 - DMA # for GF1 chip (1,3,5,6,7)750 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)751 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)752 voices - GF1 voices limit (14-32)753 pcm_voices - reserved PCM voices754755 This module supports multiple cards and autoprobe.756757 Module snd-hda-intel758 --------------------759760 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),761 ATI SB450, SB600, RS600,762 VIA VT8251/VT8237A,763 SIS966, ULI M5461764765 model - force the model name766 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)767 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)768 single_cmd - Use single immediate commands to communicate with769 codecs (for debugging only)770 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)771772 This module supports one card and autoprobe.773774 Each codec may have a model table for different configurations.775 If your machine isn't listed there, the default (usually minimal)776 configuration is set up. You can pass "model=<name>" option to777 specify a certain model in such a case. There are different778 models depending on the codec chip.779780 Model name Description781 ---------- -----------782 ALC880783 3stack 3-jack in back and a headphone out784 3stack-digout 3-jack in back, a HP out and a SPDIF out785 5stack 5-jack in back, 2-jack in front786 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out787 6stack 6-jack in back, 2-jack in front788 6stack-digout 6-jack with a SPDIF out789 w810 3-jack790 z71v 3-jack (HP shared SPDIF)791 asus 3-jack (ASUS Mobo)792 asus-w1v ASUS W1V793 asus-dig ASUS with SPDIF out794 asus-dig2 ASUS with SPDIF out (using GPIO2)795 uniwill 3-jack796 fujitsu Fujitsu Laptops (Pi1536)797 F1734 2-jack798 lg LG laptop (m1 express dual)799 lg-lw LG LW20/LW25 laptop800 tcl TCL S700801 clevo Clevo laptops (m520G, m665n)802 test for testing/debugging purpose, almost all controls can be803 adjusted. Appearing only when compiled with804 $CONFIG_SND_DEBUG=y805 auto auto-config reading BIOS (default)806807 ALC260808 hp HP machines809 hp-3013 HP machines (3013-variant)810 fujitsu Fujitsu S7020811 acer Acer TravelMate812 basic fixed pin assignment (old default model)813 auto auto-config reading BIOS (default)814815 ALC262816 fujitsu Fujitsu Laptop817 hp-bpc HP xw4400/6400/8400/9400 laptops818 hp-bpc-d7000 HP BPC D7000819 benq Benq ED8820 hippo Hippo (ATI) with jack detection, Sony UX-90s821 hippo_1 Hippo (Benq) with jack detection822 basic fixed pin assignment w/o SPDIF823 auto auto-config reading BIOS (default)824825 ALC882/885826 3stack-dig 3-jack with SPDIF I/O827 6stack-dig 6-jack digital with SPDIF I/O828 arima Arima W820Di1829 macpro MacPro support830 w2jc ASUS W2JC831 auto auto-config reading BIOS (default)832833 ALC883/888834 3stack-dig 3-jack with SPDIF I/O835 6stack-dig 6-jack digital with SPDIF I/O836 3stack-6ch 3-jack 6-channel837 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O838 6stack-dig-demo 6-jack digital for Intel demo board839 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)840 medion Medion Laptops841 targa-dig Targa/MSI842 targa-2ch-dig Targs/MSI with 2-channel843 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)844 auto auto-config reading BIOS (default)845846 ALC861/660847 3stack 3-jack848 3stack-dig 3-jack with SPDIF I/O849 6stack-dig 6-jack with SPDIF I/O850 3stack-660 3-jack (for ALC660)851 uniwill-m31 Uniwill M31 laptop852 toshiba Toshiba laptop support853 asus Asus laptop support854 asus-laptop ASUS F2/F3 laptops855 auto auto-config reading BIOS (default)856857 ALC861VD/660VD858 3stack 3-jack859 3stack-dig 3-jack with SPDIF OUT860 6stack-dig 6-jack with SPDIF OUT861 3stack-660 3-jack (for ALC660VD)862 lenovo Lenovo 3000 C200863 auto auto-config reading BIOS (default)864865 CMI9880866 minimal 3-jack in back867 min_fp 3-jack in back, 2-jack in front868 full 6-jack in back, 2-jack in front869 full_dig 6-jack in back, 2-jack in front, SPDIF I/O870 allout 5-jack in back, 2-jack in front, SPDIF out871 auto auto-config reading BIOS (default)872873 AD1884874 N/A875876 AD1981877 basic 3-jack (default)878 hp HP nx6320879 thinkpad Lenovo Thinkpad T60/X60/Z60880 toshiba Toshiba U205881882 AD1983883 N/A884885 AD1984886 basic default configuration887 thinkpad Lenovo Thinkpad T61/X61888889 AD1986A890 6stack 6-jack, separate surrounds (default)891 3stack 3-stack, shared surrounds892 laptop 2-channel only (FSC V2060, Samsung M50)893 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)894 ultra 2-channel with EAPD (Samsung Ultra tablet PC)895896 AD1988897 6stack 6-jack898 6stack-dig ditto with SPDIF899 3stack 3-jack900 3stack-dig ditto with SPDIF901 laptop 3-jack with hp-jack automute902 laptop-dig ditto with SPDIF903 auto auto-config reading BIOS (default)904905 Conexant 5045906 laptop Laptop config907 test for testing/debugging purpose, almost all controls908 can be adjusted. Appearing only when compiled with909 $CONFIG_SND_DEBUG=y910911 Conexant 5047912 laptop Basic Laptop config913 laptop-hp Laptop config for some HP models (subdevice 30A5)914 laptop-eapd Laptop config with EAPD support915 test for testing/debugging purpose, almost all controls916 can be adjusted. Appearing only when compiled with917 $CONFIG_SND_DEBUG=y918919 STAC9200/9205/9254920 ref Reference board921922 STAC9220/9221923 ref Reference board924 3stack D945 3stack925 5stack D945 5stack + SPDIF926 intel-mac-v1 Intel Mac Type 1927 intel-mac-v2 Intel Mac Type 2928 intel-mac-v3 Intel Mac Type 3929 intel-mac-v4 Intel Mac Type 4930 intel-mac-v5 Intel Mac Type 5931 macmini Intel Mac Mini (equivalent with type 3)932 macbook Intel Mac Book (eq. type 5)933 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)934 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)935 imac-intel Intel iMac (eq. type 2)936 imac-intel-20 Intel iMac (newer version) (eq. type 3)937938 STAC9202/9250/9251939 ref Reference board, base config940 m2-2 Some Gateway MX series laptops941 m6 Some Gateway NX series laptops942 pa6 Gateway NX860 series943944 STAC9227/9228/9229/927x945 ref Reference board946 3stack D965 3stack947 5stack D965 5stack + SPDIF948949 STAC9872950 vaio Setup for VAIO FE550G/SZ110951 vaio-ar Setup for VAIO AR952953 The model name "genric" is treated as a special case. When this954 model is given, the driver uses the generic codec parser without955 "codec-patch". It's sometimes good for testing and debugging.956957 If the default configuration doesn't work and one of the above958 matches with your device, report it together with the PCI959 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel960 ML (see the section "Links and Addresses").961962 Note 2: If you get click noises on output, try the module option963 position_fix=1 or 2. position_fix=1 will use the SD_LPIB964 register value without FIFO size correction as the current965 DMA pointer. position_fix=2 will make the driver to use966 the position buffer instead of reading SD_LPIB register.967 (Usually SD_LPLIB register is more accurate than the968 position buffer.)969970 NB: If you get many "azx_get_response timeout" messages at971 loading, it's likely a problem of interrupts (e.g. ACPI irq972 routing). Try to boot with options like "pci=noacpi". Also, you973 can try "single_cmd=1" module option. This will switch the974 communication method between HDA controller and codecs to the975 single immediate commands instead of CORB/RIRB. Basically, the976 single command mode is provided only for BIOS, and you won't get977 unsolicited events, too. But, at least, this works independently978 from the irq. Remember this is a last resort, and should be979 avoided as much as possible...980981 MORE NOTES ON "azx_get_response timeout" PROBLEMS:982 On some hardwares, you may need to add a proper probe_mask option983 to avoid the "azx_get_response timeout" problem above, instead.984 This occurs when the access to non-existing or non-working codec slot985 (likely a modem one) causes a stall of the communication via HD-audio986 bus. You can see which codec slots are probed by enabling987 CONFIG_SND_DEBUG_DETECT, or simply from the file name of the codec988 proc files. Then limit the slots to probe by probe_mask option.989 For example, probe_mask=1 means to probe only the first slot, and990 probe_mask=4 means only the third slot.991992 The power-management is supported.993994 Module snd-hdsp995 ---------------996997 Module for RME Hammerfall DSP audio interface(s)998999 This module supports multiple cards.10001001 Note: The firmware data can be automatically loaded via hotplug1002 when CONFIG_FW_LOADER is set. Otherwise, you need to load1003 the firmware via hdsploader utility included in alsa-tools1004 package.1005 The firmware data is found in alsa-firmware package.10061007 Note: snd-page-alloc module does the job which snd-hammerfall-mem1008 module did formerly. It will allocate the buffers in advance1009 when any HDSP cards are found. To make the buffer1010 allocation sure, load snd-page-alloc module in the early1011 stage of boot sequence. See "Early Buffer Allocation"1012 section.10131014 Module snd-hdspm1015 ----------------10161017 Module for RME HDSP MADI board.10181019 precise_ptr - Enable precise pointer, or disable.1020 line_outs_monitor - Send playback streams to analog outs by default.1021 enable_monitor - Enable Analog Out on Channel 63/64 by default.10221023 See hdspm.txt for details.10241025 Module snd-ice17121026 ------------------10271028 Module for Envy24 (ICE1712) based PCI sound cards.1029 * MidiMan M Audio Delta 10101030 * MidiMan M Audio Delta 1010LT1031 * MidiMan M Audio Delta DiO 24961032 * MidiMan M Audio Delta 661033 * MidiMan M Audio Delta 441034 * MidiMan M Audio Delta 4101035 * MidiMan M Audio Audiophile 24961036 * TerraTec EWS 88MT1037 * TerraTec EWS 88D1038 * TerraTec EWX 24/961039 * TerraTec DMX 6Fire1040 * TerraTec Phase 881041 * Hoontech SoundTrack DSP 241042 * Hoontech SoundTrack DSP 24 Value1043 * Hoontech SoundTrack DSP 24 Media 7.11044 * Event Electronics, EZ81045 * Digigram VX4421046 * Lionstracs, Mediastaton10471048 model - Use the given board model, one of the following:1049 delta1010, dio2496, delta66, delta44, audiophile, delta410,1050 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,1051 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,1052 phase88, mediastation1053 omni - Omni I/O support for MidiMan M-Audio Delta44/661054 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)1055 in msec resolution, default value is 500 (0.5 sec)10561057 This module supports multiple cards and autoprobe. Note: The consumer part1058 is not used with all Envy24 based cards (for example in the MidiMan Delta1059 serie).10601061 Note: The supported board is detected by reading EEPROM or PCI1062 SSID (if EEPROM isn't available). You can override the1063 model by passing "model" module option in case that the1064 driver isn't configured properly or you want to try another1065 type for testing.10661067 Module snd-ice17241068 ------------------10691070 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.1071 * MidiMan M Audio Revolution 5.11072 * MidiMan M Audio Revolution 7.11073 * MidiMan M Audio Audiophile 1921074 * AMP Ltd AUDIO20001075 * TerraTec Aureon 5.1 Sky1076 * TerraTec Aureon 7.1 Space1077 * TerraTec Aureon 7.1 Universe1078 * TerraTec Phase 221079 * TerraTec Phase 281080 * AudioTrak Prodigy 7.11081 * AudioTrak Prodigy 7.1LT1082 * AudioTrak Prodigy 1921083 * Pontis MS3001084 * Albatron K8X800 Pro II1085 * Chaintech ZNF3-1501086 * Chaintech ZNF3-2501087 * Chaintech 9CJS1088 * Chaintech AV-7101089 * Shuttle SN25P10901091 model - Use the given board model, one of the following:1092 revo51, revo71, amp2000, prodigy71, prodigy71lt,1093 prodigy192, aureon51, aureon71, universe, ap192,1094 k8x800, phase22, phase28, ms300, av71010951096 This module supports multiple cards and autoprobe.10971098 Note: The supported board is detected by reading EEPROM or PCI1099 SSID (if EEPROM isn't available). You can override the1100 model by passing "model" module option in case that the1101 driver isn't configured properly or you want to try another1102 type for testing.11031104 Module snd-indigo1105 -----------------11061107 Module for Echoaudio Indigo11081109 This module supports multiple cards.1110 The driver requires the firmware loader support on kernel.11111112 Module snd-indigodj1113 -------------------11141115 Module for Echoaudio Indigo DJ11161117 This module supports multiple cards.1118 The driver requires the firmware loader support on kernel.11191120 Module snd-indigoio1121 -------------------11221123 Module for Echoaudio Indigo IO11241125 This module supports multiple cards.1126 The driver requires the firmware loader support on kernel.11271128 Module snd-intel8x01129 -------------------11301131 Module for AC'97 motherboards from Intel and compatibles.1132 * Intel i810/810E, i815, i820, i830, i84x, MX4401133 ICH5, ICH6, ICH7, ESB21134 * SiS 7012 (SiS 735)1135 * NVidia NForce, NForce2, NForce3, MCP04, CK8041136 CK8, CK8S, MCP5011137 * AMD AMD768, AMD81111138 * ALi m545511391140 ac97_clock - AC'97 codec clock base (0 = auto-detect)1141 ac97_quirk - AC'97 workaround for strange hardware1142 See "AC97 Quirk Option" section below.1143 buggy_irq - Enable workaround for buggy interrupts on some1144 motherboards (default yes on nForce chips,1145 otherwise off)1146 buggy_semaphore - Enable workaround for hardwares with buggy1147 semaphores (e.g. on some ASUS laptops)1148 (default off)1149 spdif_aclink - Use S/PDIF over AC-link instead of direct connection1150 from the controller chip1151 (0 = off, 1 = on, -1 = default)11521153 This module supports one chip and autoprobe.11541155 Note: the latest driver supports auto-detection of chip clock.1156 if you still encounter too fast playback, specify the clock1157 explicitly via the module option "ac97_clock=41194".11581159 Joystick/MIDI ports are not supported by this driver. If your1160 motherboard has these devices, use the ns558 or snd-mpu4011161 modules, respectively.11621163 The power-management is supported.11641165 Module snd-intel8x0m1166 --------------------11671168 Module for Intel ICH (i8x0) chipset MC97 modems.1169 * Intel i810/810E, i815, i820, i830, i84x, MX4401170 ICH5, ICH6, ICH71171 * SiS 7013 (SiS 735)1172 * NVidia NForce, NForce2, NForce2s, NForce31173 * AMD AMD81111174 * ALi m545511751176 ac97_clock - AC'97 codec clock base (0 = auto-detect)11771178 This module supports one card and autoprobe.11791180 Note: The default index value of this module is -2, i.e. the first1181 slot is excluded.11821183 The power-management is supported.11841185 Module snd-interwave1186 --------------------11871188 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 321189 and other sound cards based on AMD InterWave (tm) chip.11901191 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)1192 irq - IRQ # for InterWave chip (3,5,9,11,12,15)1193 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)1194 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)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 voices12001201 This module supports multiple cards, autoprobe and ISA PnP.12021203 Module snd-interwave-stb1204 ------------------------12051206 Module for UltraSound 32-Pro (sound card from STB used by Compaq)1207 and other sound cards based on AMD InterWave (tm) chip with TEA6330T1208 circuit for extended control of bass, treble and master volume.12091210 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)1211 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)1212 irq - IRQ # for InterWave chip (3,5,9,11,12,15)1213 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)1214 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)1215 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)1216 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)1217 pcm_voices - reserved PCM voices for the synthesizer (default 2)1218 effect - 1 = InterWave effects enable (default 0);1219 requires 8 voices12201221 This module supports multiple cards, autoprobe and ISA PnP.12221223 Module snd-korg12121224 -------------------12251226 Module for Korg 1212 IO PCI card12271228 This module supports multiple cards.12291230 Module snd-layla201231 ------------------12321233 Module for Echoaudio Layla2012341235 This module supports multiple cards.1236 The driver requires the firmware loader support on kernel.12371238 Module snd-layla241239 ------------------12401241 Module for Echoaudio Layla2412421243 This module supports multiple cards.1244 The driver requires the firmware loader support on kernel.12451246 Module snd-maestro31247 -------------------12481249 Module for Allegro/Maestro3 chips12501251 external_amp - enable external amp (enabled by default)1252 amp_gpio - GPIO pin number for external amp (0-15) or1253 -1 for default pin (8 for allegro, 1 for1254 others)12551256 This module supports autoprobe and multiple chips.12571258 Note: the binding of amplifier is dependent on hardware.1259 If there is no sound even though all channels are unmuted, try to1260 specify other gpio connection via amp_gpio option.1261 For example, a Panasonic notebook might need "amp_gpio=0x0d"1262 option.12631264 The power-management is supported.12651266 Module snd-mia1267 ---------------12681269 Module for Echoaudio Mia12701271 This module supports multiple cards.1272 The driver requires the firmware loader support on kernel.12731274 Module snd-miro1275 ---------------12761277 Module for Miro soundcards: miroSOUND PCM 1 pro,1278 miroSOUND PCM 12,1279 miroSOUND PCM 20 Radio.12801281 port - Port # (0x530,0x604,0xe80,0xf40)1282 irq - IRQ # (5,7,9,10,11)1283 dma1 - 1st dma # (0,1,3)1284 dma2 - 2nd dma # (0,1)1285 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)1286 mpu_irq - MPU-401 irq # (5,7,9,10)1287 fm_port - FM Port # (0x388)1288 wss - enable WSS mode1289 ide - enable onboard ide support12901291 Module snd-mixart1292 -----------------12931294 Module for Digigram miXart8 sound cards.12951296 This module supports multiple cards.1297 Note: One miXart8 board will be represented as 4 alsa cards.1298 See MIXART.txt for details.12991300 When the driver is compiled as a module and the hotplug firmware1301 is supported, the firmware data is loaded via hotplug automatically.1302 Install the necessary firmware files in alsa-firmware package.1303 When no hotplug fw loader is available, you need to load the1304 firmware via mixartloader utility in alsa-tools package.13051306 Module snd-mona1307 ---------------13081309 Module for Echoaudio Mona13101311 This module supports multiple cards.1312 The driver requires the firmware loader support on kernel.13131314 Module snd-mpu4011315 -----------------13161317 Module for MPU-401 UART devices.13181319 port - port number or -1 (disable)1320 irq - IRQ number or -1 (disable)1321 pnp - PnP detection - 0 = disable, 1 = enable (default)1322 uart_enter - Issue UART_ENTER command at open - bool, default = on13231324 This module supports multiple devices and PnP.13251326 Module snd-mtpav1327 ----------------13281329 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel1330 port).13311332 port - I/O port # for MTPAV (0x378,0x278, default=0x378)1333 irq - IRQ # for MTPAV (7,5, default=7)1334 hwports - number of supported hardware ports, default=8.13351336 Module supports only 1 card. This module has no enable option.13371338 Module snd-mts641339 ----------------13401341 Module for Ego Systems (ESI) Miditerminal 414013421343 This module supports multiple devices.1344 Requires parport (CONFIG_PARPORT).13451346 Module snd-nm2561347 ----------------13481349 Module for NeoMagic NM256AV/ZX chips13501351 playback_bufsize - max playback frame size in kB (4-128kB)1352 capture_bufsize - max capture frame size in kB (4-128kB)1353 force_ac97 - 0 or 1 (disabled by default)1354 buffer_top - specify buffer top address1355 use_cache - 0 or 1 (disabled by default)1356 vaio_hack - alias buffer_top=0x25a8001357 reset_workaround - enable AC97 RESET workaround for some laptops1358 reset_workaround2 - enable extended AC97 RESET workaround for some1359 other laptops13601361 This module supports one chip and autoprobe.13621363 The power-management is supported.13641365 Note: on some notebooks the buffer address cannot be detected1366 automatically, or causes hang-up during initialization.1367 In such a case, specify the buffer top address explicitly via1368 the buffer_top option.1369 For example,1370 Sony F250: buffer_top=0x25a8001371 Sony F270: buffer_top=0x2728001372 The driver supports only ac97 codec. It's possible to force1373 to initialize/use ac97 although it's not detected. In such a1374 case, use force_ac97=1 option - but *NO* guarantee whether it1375 works!13761377 Note: The NM256 chip can be linked internally with non-AC971378 codecs. This driver supports only the AC97 codec, and won't work1379 with machines with other (most likely CS423x or OPL3SAx) chips,1380 even though the device is detected in lspci. In such a case, try1381 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP1382 but some doesn't have ISA PnP. You'll need to specify isapnp=01383 and proper hardware parameters in the case without ISA PnP.13841385 Note: some laptops need a workaround for AC97 RESET. For the1386 known hardware like Dell Latitude LS and Sony PCG-F305, this1387 workaround is enabled automatically. For other laptops with a1388 hard freeze, you can try reset_workaround=1 option.13891390 Note: Dell Latitude CSx laptops have another problem regarding1391 AC97 RESET. On these laptops, reset_workaround2 option is1392 turned on as default. This option is worth to try if the1393 previous reset_workaround option doesn't help.13941395 Note: This driver is really crappy. It's a porting from the1396 OSS driver, which is a result of black-magic reverse engineering.1397 The detection of codec will fail if the driver is loaded *after*1398 X-server as described above. You might be able to force to load1399 the module, but it may result in hang-up. Hence, make sure that1400 you load this module *before* X if you encounter this kind of1401 problem.14021403 Module snd-opl3sa21404 ------------------14051406 Module for Yamaha OPL3-SA2/SA3 sound cards.14071408 port - control port # for OPL3-SA chip (0x370)1409 sb_port - SB port # for OPL3-SA chip (0x220,0x240)1410 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)1411 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable1412 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable1413 irq - IRQ # for OPL3-SA chip (5,7,9,10)1414 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)1415 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable1416 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)14171418 This module supports multiple cards and ISA PnP. It does not support1419 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!14201421 The power-management is supported.14221423 Module snd-opti92x-ad18481424 -------------------------14251426 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.1427 Module works with OAK Mozart cards as well.14281429 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)1430 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)1431 fm_port - port # for OPL3 device (0x388)1432 irq - IRQ # for WSS chip (5,7,9,10,11)1433 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)1434 dma1 - first DMA # for WSS chip (0,1,3)14351436 This module supports only one card, autoprobe and PnP.14371438 Module snd-opti92x-cs42311439 -------------------------14401441 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.14421443 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)1444 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)1445 fm_port - port # for OPL3 device (0x388)1446 irq - IRQ # for WSS chip (5,7,9,10,11)1447 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)1448 dma1 - first DMA # for WSS chip (0,1,3)1449 dma2 - second DMA # for WSS chip (0,1,3)14501451 This module supports only one card, autoprobe and PnP.14521453 Module snd-opti93x1454 ------------------14551456 Module for sound cards based on OPTi 82c93x chips.14571458 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)1459 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)1460 fm_port - port # for OPL3 device (0x388)1461 irq - IRQ # for WSS chip (5,7,9,10,11)1462 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)1463 dma1 - first DMA # for WSS chip (0,1,3)1464 dma2 - second DMA # for WSS chip (0,1,3)14651466 This module supports only one card, autoprobe and PnP.14671468 Module snd-pcxhr1469 ----------------14701471 Module for Digigram PCXHR boards14721473 This module supports multiple cards.14741475 Module snd-portman2x41476 ---------------------14771478 Module for Midiman Portman 2x4 parallel port MIDI interface14791480 This module supports multiple cards.14811482 Module snd-powermac (on ppc only)1483 ---------------------------------14841485 Module for PowerMac, iMac and iBook on-board soundchips14861487 enable_beep - enable beep using PCM (enabled as default)14881489 Module supports autoprobe a chip.14901491 Note: the driver may have problems regarding endianess.14921493 The power-management is supported.14941495 Module snd-pxa2xx-ac97 (on arm only)1496 ------------------------------------14971498 Module for AC97 driver for the Intel PXA2xx chip14991500 For ARM architecture only.15011502 The power-management is supported.15031504 Module snd-riptide1505 ------------------15061507 Module for Conexant Riptide chip15081509 joystick_port - Joystick port # (default: 0x200)1510 mpu_port - MPU401 port # (default: 0x330)1511 opl3_port - OPL3 port # (default: 0x388)15121513 This module supports multiple cards.1514 The driver requires the firmware loader support on kernel.1515 You need to install the firmware file "riptide.hex" to the standard1516 firmware path (e.g. /lib/firmware).15171518 Module snd-rme321519 ----------------15201521 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,1522 Prodif96 and Prodif Gold) sound cards.15231524 This module supports multiple cards.15251526 Module snd-rme961527 ----------------15281529 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.15301531 This module supports multiple cards.15321533 Module snd-rme96521534 ------------------15351536 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.15371538 precise_ptr - Enable precise pointer (doesn't work reliably).1539 (default = 0)15401541 This module supports multiple cards.15421543 Note: snd-page-alloc module does the job which snd-hammerfall-mem1544 module did formerly. It will allocate the buffers in advance1545 when any RME9652 cards are found. To make the buffer1546 allocation sure, load snd-page-alloc module in the early1547 stage of boot sequence. See "Early Buffer Allocation"1548 section.15491550 Module snd-sa11xx-uda1341 (on arm only)1551 ---------------------------------------15521553 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.15541555 Module supports only one card.1556 Module has no enable and index options.15571558 The power-management is supported.15591560 Module snd-sb81561 --------------15621563 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,1564 SoundBlaster 2.0,1565 SoundBlaster Pro15661567 port - port # for SB DSP chip (0x220,0x240,0x260)1568 irq - IRQ # for SB DSP chip (5,7,9,10)1569 dma8 - DMA # for SB DSP chip (1,3)15701571 This module supports multiple cards and autoprobe.15721573 The power-management is supported.15741575 Module snd-sb16 and snd-sbawe1576 -----------------------------15771578 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),1579 SoundBlaster AWE 32 (PnP),1580 SoundBlaster AWE 64 PnP15811582 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)1583 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable1584 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)1585 (snd-sbawe module only)1586 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)1587 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)1588 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)1589 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)1590 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable1591 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)15921593 This module supports multiple cards, autoprobe and ISA PnP.15941595 Note: To use Vibra16X cards in 16-bit half duplex mode, you must1596 disable 16bit DMA with dma16 = -1 module parameter.1597 Also, all Sound Blaster 16 type cards can operate in 16-bit1598 half duplex mode through 8-bit DMA channel by disabling their1599 16-bit DMA channel.16001601 The power-management is supported.16021603 Module snd-sgalaxy1604 ------------------16051606 Module for Aztech Sound Galaxy sound card.16071608 sbport - Port # for SB16 interface (0x220,0x240)1609 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)1610 irq - IRQ # (7,9,10,11)1611 dma1 - DMA #16121613 This module supports multiple cards.16141615 The power-management is supported.16161617 Module snd-sscape1618 -----------------16191620 Module for ENSONIQ SoundScape PnP cards.16211622 port - Port # (PnP setup)1623 irq - IRQ # (PnP setup)1624 mpu_irq - MPU-401 IRQ # (PnP setup)1625 dma - DMA # (PnP setup)16261627 This module supports multiple cards. ISA PnP must be enabled.1628 You need sscape_ctl tool in alsa-tools package for loading1629 the microcode.16301631 Module snd-sun-amd7930 (on sparc only)1632 --------------------------------------16331634 Module for AMD7930 sound chips found on Sparcs.16351636 This module supports multiple cards.16371638 Module snd-sun-cs4231 (on sparc only)1639 -------------------------------------16401641 Module for CS4231 sound chips found on Sparcs.16421643 This module supports multiple cards.16441645 Module snd-sun-dbri (on sparc only)1646 -----------------------------------16471648 Module for DBRI sound chips found on Sparcs.16491650 This module supports multiple cards.16511652 Module snd-wavefront1653 --------------------16541655 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.16561657 cs4232_pcm_port - Port # for CS4232 PCM interface.1658 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).1659 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.1660 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).1661 use_cs4232_midi - Use CS4232 MPU-401 interface1662 (inaccessibly located inside your computer)1663 ics2115_port - Port # for ICS21151664 ics2115_irq - IRQ # for ICS21151665 fm_port - FM OPL-3 Port #1666 dma1 - DMA1 # for CS4232 PCM interface.1667 dma2 - DMA2 # for CS4232 PCM interface.1668 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)16691670 This module supports multiple cards and ISA PnP.16711672 Module snd-sonicvibes1673 ---------------------16741675 Module for S3 SonicVibes PCI sound cards.1676 * PINE Schubert 32 PCI16771678 reverb - Reverb Enable - 1 = enable, 0 = disable (default)1679 - SoundCard must have onboard SRAM for this.1680 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)16811682 This module supports multiple cards and autoprobe.16831684 Module snd-serial-u165501685 ------------------------16861687 Module for UART16550A serial MIDI ports.16881689 port - port # for UART16550A chip1690 irq - IRQ # for UART16550A chip, -1 = poll mode1691 speed - speed in bauds (9600,19200,38400,57600,115200)1692 38400 = default1693 base - base for divisor in bauds (57600,115200,230400,460800)1694 115200 = default1695 outs - number of MIDI ports in a serial port (1-4)1696 1 = default1697 adaptor - Type of adaptor.1698 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,1699 3 = MS-124W M/B, 4 = Generic17001701 This module supports multiple cards. This module does not support autoprobe1702 thus the main port must be specified!!! Other options are optional.17031704 Module snd-trident1705 ------------------17061707 Module for Trident 4DWave DX/NX sound cards.1708 * Best Union Miss Melody 4DWave PCI1709 * HIS 4DWave PCI1710 * Warpspeed ONSpeed 4DWave PCI1711 * AzTech PCI 64-Q3D1712 * Addonics SV 7501713 * CHIC True Sound 4Dwave1714 * Shark Predator4D-PCI1715 * Jaton SonicWave 4D17161717 pcm_channels - max channels (voices) reserved for PCM1718 wavetable_size - max wavetable size in kB (4-?kb)17191720 This module supports multiple cards and autoprobe.17211722 The power-management is supported.17231724 Module snd-usb-audio1725 --------------------17261727 Module for USB audio and USB MIDI devices.17281729 vid - Vendor ID for the device (optional)1730 pid - Product ID for the device (optional)1731 device_setup - Device specific magic number (optional)1732 - Influence depends on the device1733 - Default: 0x000017341735 This module supports multiple devices, autoprobe and hotplugging.17361737 Module snd-usb-caiaq1738 --------------------17391740 Module for caiaq UB audio interfaces,1741 * Native Instruments RigKontrol21742 * Native Instruments Kore Controller1743 * Native Instruments Audio Kontrol 11744 * Native Instruments Audio 8 DJ17451746 This module supports multiple devices, autoprobe and hotplugging.17471748 Module snd-usb-usx2y1749 --------------------17501751 Module for Tascam USB US-122, US-224 and US-428 devices.17521753 This module supports multiple devices, autoprobe and hotplugging.17541755 Note: you need to load the firmware via usx2yloader utility included1756 in alsa-tools and alsa-firmware packages.17571758 Module snd-via82xx1759 ------------------17601761 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,1762 8233A, 8233C, 8235, 8237 (south) bridge.17631764 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup1765 [VIA686A/686B only]1766 joystick - Enable joystick (default off) [VIA686A/686B only]1767 ac97_clock - AC'97 codec clock base (default 48000Hz)1768 dxs_support - support DXS channels,1769 0 = auto (default), 1 = enable, 2 = disable,1770 3 = 48k only, 4 = no VRA, 5 = enable any sample1771 rate and different sample rates on different1772 channels1773 [VIA8233/C, 8235, 8237 only]1774 ac97_quirk - AC'97 workaround for strange hardware1775 See "AC97 Quirk Option" section below.17761777 This module supports one chip and autoprobe.17781779 Note: on some SMP motherboards like MSI 694D the interrupts might1780 not be generated properly. In such a case, please try to1781 set the SMP (or MPS) version on BIOS to 1.1 instead of1782 default value 1.4. Then the interrupt number will be1783 assigned under 15. You might also upgrade your BIOS.17841785 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)1786 channels as the first PCM. On these channels, up to 41787 streams can be played at the same time, and the controller1788 can perform sample rate conversion with separate rates for1789 each channel.1790 As default (dxs_support = 0), 48k fixed rate is chosen1791 except for the known devices since the output is often1792 noisy except for 48k on some mother boards due to the1793 bug of BIOS.1794 Please try once dxs_support=5 and if it works on other1795 sample rates (e.g. 44.1kHz of mp3 playback), please let us1796 know the PCI subsystem vendor/device id's (output of1797 "lspci -nv").1798 If dxs_support=5 does not work, try dxs_support=4; if it1799 doesn't work too, try dxs_support=1. (dxs_support=1 is1800 usually for old motherboards. The correct implemented1801 board should work with 4 or 5.) If it still doesn't1802 work and the default setting is ok, dxs_support=3 is the1803 right choice. If the default setting doesn't work at all,1804 try dxs_support=2 to disable the DXS channels.1805 In any cases, please let us know the result and the1806 subsystem vendor/device ids. See "Links and Addresses"1807 below.18081809 Note: for the MPU401 on VIA823x, use snd-mpu401 driver1810 additionally. The mpu_port option is for VIA686 chips only.18111812 The power-management is supported.18131814 Module snd-via82xx-modem1815 ------------------------18161817 Module for VIA82xx AC97 modem18181819 ac97_clock - AC'97 codec clock base (default 48000Hz)18201821 This module supports one card and autoprobe.18221823 Note: The default index value of this module is -2, i.e. the first1824 slot is excluded.18251826 The power-management is supported.18271828 Module snd-virmidi1829 ------------------18301831 Module for virtual rawmidi devices.1832 This module creates virtual rawmidi devices which communicate1833 to the corresponding ALSA sequencer ports.18341835 midi_devs - MIDI devices # (1-4, default=4)18361837 This module supports multiple cards.18381839 Module snd-vx2221840 ----------------18411842 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.18431844 mic - Enable Microphone on V222 Mic (NYI)1845 ibl - Capture IBL size. (default = 0, minimum size)18461847 This module supports multiple cards.18481849 When the driver is compiled as a module and the hotplug firmware1850 is supported, the firmware data is loaded via hotplug automatically.1851 Install the necessary firmware files in alsa-firmware package.1852 When no hotplug fw loader is available, you need to load the1853 firmware via vxloader utility in alsa-tools package. To invoke1854 vxloader automatically, add the following to /etc/modprobe.conf18551856 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader18571858 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to1859 /etc/modules.conf, instead.)1860 IBL size defines the interrupts period for PCM. The smaller size1861 gives smaller latency but leads to more CPU consumption, too.1862 The size is usually aligned to 126. As default (=0), the smallest1863 size is chosen. The possible IBL values can be found in1864 /proc/asound/cardX/vx-status proc file.18651866 The power-management is supported.18671868 Module snd-vxpocket1869 -------------------18701871 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.18721873 ibl - Capture IBL size. (default = 0, minimum size)18741875 This module supports multiple cards. The module is compiled only when1876 PCMCIA is supported on kernel.18771878 With the older 2.6.x kernel, to activate the driver via the card1879 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the1880 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no1881 longer require a config file.18821883 When the driver is compiled as a module and the hotplug firmware1884 is supported, the firmware data is loaded via hotplug automatically.1885 Install the necessary firmware files in alsa-firmware package.1886 When no hotplug fw loader is available, you need to load the1887 firmware via vxloader utility in alsa-tools package.18881889 About capture IBL, see the description of snd-vx222 module.18901891 Note: snd-vxp440 driver is merged to snd-vxpocket driver since1892 ALSA 1.0.10.18931894 The power-management is supported.18951896 Module snd-ymfpci1897 -----------------18981899 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).19001901 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,1902 1 (auto-detect for YMF744/754 only)1903 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default1904 1 (auto-detect for YMF744/754 only)1905 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,1906 1 (auto-detect)1907 rear_switch - enable shared rear/line-in switch (bool)19081909 This module supports autoprobe and multiple chips.19101911 The power-management is supported.19121913 Module snd-pdaudiocf1914 --------------------19151916 Module for Sound Core PDAudioCF sound card.19171918 The power-management is supported.191919201921AC97 Quirk Option1922=================19231924The ac97_quirk option is used to enable/override the workaround for1925specific devices on drivers for on-board AC'97 controllers like1926snd-intel8x0. Some hardware have swapped output pins between Master1927and Headphone, or Surround (thanks to confusion of AC'971928specifications from version to version :-)19291930The driver provides the auto-detection of known problematic devices,1931but some might be unknown or wrongly detected. In such a case, pass1932the proper value with this option.19331934The following strings are accepted:1935 - default Don't override the default setting1936 - none Disable the quirk1937 - hp_only Bind Master and Headphone controls as a single control1938 - swap_hp Swap headphone and master controls1939 - swap_surround Swap master and surround controls1940 - ad_sharing For AD1985, turn on OMS bit and use headphone1941 - alc_jack For ALC65x, turn on the jack sense mode1942 - inv_eapd Inverted EAPD implementation1943 - mute_led Bind EAPD bit for turning on/off mute LED19441945For backward compatibility, the corresponding integer value -1, 0,1946... are accepted, too.19471948For example, if "Master" volume control has no effect on your device1949but only "Headphone" does, pass ac97_quirk=hp_only module option.195019511952Configuring Non-ISAPNP Cards1953============================19541955When the kernel is configured with ISA-PnP support, the modules1956supporting the isapnp cards will have module options "isapnp".1957If this option is set, *only* the ISA-PnP devices will be probed.1958For probing the non ISA-PnP cards, you have to pass "isapnp=0" option1959together with the proper i/o and irq configuration.19601961When the kernel is configured without ISA-PnP support, isapnp option1962will be not built in.196319641965Module Autoloading Support1966==========================19671968The ALSA drivers can be loaded automatically on demand by defining1969module aliases. The string 'snd-card-%1' is requested for ALSA native1970devices where %i is sound card number from zero to seven.19711972To auto-load an ALSA driver for OSS services, define the string1973'sound-slot-%i' where %i means the slot number for OSS, which1974corresponds to the card index of ALSA. Usually, define this1975as the same card module.19761977An example configuration for a single emu10k1 card is like below:1978----- /etc/modprobe.conf1979alias snd-card-0 snd-emu10k11980alias sound-slot-0 snd-emu10k11981----- /etc/modprobe.conf19821983The available number of auto-loaded sound cards depends on the module1984option "cards_limit" of snd module. As default it's set to 1.1985To enable the auto-loading of multiple cards, specify the number of1986sound cards in that option.19871988When multiple cards are available, it'd better to specify the index1989number for each card via module option, too, so that the order of1990cards is kept consistent.19911992An example configuration for two sound cards is like below:19931994----- /etc/modprobe.conf1995# ALSA portion1996options snd cards_limit=21997alias snd-card-0 snd-interwave1998alias snd-card-1 snd-ens13711999options snd-interwave index=02000options snd-ens1371 index=12001# OSS/Free portion2002alias sound-slot-0 snd-interwave2003alias sound-slot-1 snd-ens13712004----- /etc/modprobe.conf20052006In this example, the interwave card is always loaded as the first card2007(index 0) and ens1371 as the second (index 1).200820092010ALSA PCM devices to OSS devices mapping2011=======================================20122013/dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 42014/dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 32015/dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 122016/dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 202017/dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 192018/dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 282019/dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 362020/dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 392021/dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 4420222023The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means2024sound card number and second means device number. The ALSA devices2025have either 'c' or 'p' suffix indicating the direction, capture and2026playback, respectively.20272028Please note that the device mapping above may be varied via the module2029options of snd-pcm-oss module.203020312032Proc interfaces (/proc/asound)2033==============================20342035/proc/asound/card#/pcm#[cp]/oss2036-------------------------------2037 String "erase" - erase all additional informations about OSS applications2038 String "<app_name> <fragments> <fragment_size> [<options>]"20392040 <app_name> - name of application with (higher priority) or without path2041 <fragments> - number of fragments or zero if auto2042 <fragment_size> - size of fragment in bytes or zero if auto2043 <options> - optional parameters2044 - disable the application tries to open a pcm device for2045 this channel but does not want to use it.2046 (Cause a bug or mmap needs)2047 It's good for Quake etc...2048 - direct don't use plugins2049 - block force block mode (rvplayer)2050 - non-block force non-block mode2051 - whole-frag write only whole fragments (optimization affecting2052 playback only)2053 - no-silence do not fill silence ahead to avoid clicks2054 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl2055 instead of filled blocks20562057 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss2058 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss2059 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss206020612062Early Buffer Allocation2063=======================20642065Some drivers (e.g. hdsp) require the large contiguous buffers, and2066sometimes it's too late to find such spaces when the driver module is2067actually loaded due to memory fragmentation. You can pre-allocate the2068PCM buffers by loading snd-page-alloc module and write commands to its2069proc file in prior, for example, in the early boot stage like2070/etc/init.d/*.local scripts.20712072Reading the proc file /proc/drivers/snd-page-alloc shows the current2073usage of page allocation. In writing, you can send the following2074commands to the snd-page-alloc driver:20752076 - add VENDOR DEVICE MASK SIZE BUFFERS20772078 VENDOR and DEVICE are PCI vendor and device IDs. They take2079 integer numbers (0x prefix is needed for the hex).2080 MASK is the PCI DMA mask. Pass 0 if not restricted.2081 SIZE is the size of each buffer to allocate. You can pass2082 k and m suffix for KB and MB. The max number is 16MB.2083 BUFFERS is the number of buffers to allocate. It must be greater2084 than 0. The max number is 4.20852086 - erase20872088 This will erase the all pre-allocated buffers which are not in2089 use.209020912092Links and Addresses2093===================20942095 ALSA project homepage2096 http://www.alsa-project.org20972098 ALSA Bug Tracking System2099 https://bugtrack.alsa-project.org/bugs/21002101 ALSA Developers ML2102 mailto:alsa-devel@alsa-project.org