2 Advanced Linux Sound Architecture - Driver
3 ==========================================
10 To enable ALSA support you need at least to build the kernel with
11 primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,
12 you don't have to choose any of the OSS modules.
14 Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
15 PCM supports if you want to run OSS applications with ALSA.
17 If you want to support the WaveTable functionality on cards such as
18 SB Live! then you need to enable "Sequencer support"
19 (CONFIG_SND_SEQUENCER).
21 To make ALSA debug messages more verbose, enable the "Verbose printk"
22 and "Debug" options. To check for memory leaks, turn on "Debug memory"
23 too. "Debug detection" will add checks for the detection of cards.
25 Please note that all the ALSA ISA drivers support the Linux isapnp API
26 (if the card supports ISA PnP). You don't need to configure the cards
33 This depends on your distribution, but normally you use the /dev/MAKEDEV
34 script to create the necessary device nodes. On some systems you use a
35 script named 'snddevices'.
41 The user can load modules with options. If the module supports more than
42 one card and you have more than one card of the same type then you can
43 specify multiple values for the option separated by commas.
45 Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
50 The core ALSA module. It is used by all ALSA card drivers.
51 It takes the following options which have global effects.
53 major - major number for sound driver
56 - limiting card index for auto-loading (1-8)
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.
67 The PCM OSS emulation module.
68 This module takes options which change the mapping of devices.
70 dsp_map - PCM device number maps assigned to the 1st OSS device.
72 adsp_map - PCM device number maps assigned to the 2st OSS device.
75 - Don't block opening busy PCM devices. Default: 1
77 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
78 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
79 to PCM #0 of the card #0.
80 For changing the second or later card, specify the option with
81 commas, such like "dsp_map=0,1".
83 nonblock_open option is used to change the behavior of the PCM
84 regarding opening the device. When this option is non-zero,
85 opening a busy OSS PCM device won't be blocked but return
86 immediately with EAGAIN (just like O_NONBLOCK flag).
91 This module takes options which change the mapping of devices.
92 similar to those of the snd-pcm-oss module.
94 midi_map - MIDI device number maps assigned to the 1st OSS device.
96 amidi_map - MIDI device number maps assigned to the 2st OSS device.
99 Common parameters for top sound card modules
100 --------------------------------------------
102 Each of top level sound card module takes the following options.
104 index - index (slot #) of sound card
105 - Values: 0 through 31 or negative
106 - If nonnegative, assign that index number
107 - if negative, interpret as a bitmask of permissible
108 indices; the first free permitted index is assigned
110 id - card ID (identifier or name)
111 - Can be up to 15 characters long
112 - Default: the card type
113 - A directory by this name is created under /proc/asound/
114 containing information about the card
115 - This ID can be used instead of the index number in
118 - Default: enabled, for PCI and ISA PnP cards
123 Module for AdLib FM cards.
125 port - port # for OPL chip
127 This module supports multiple cards. It does not support autoprobe, so
128 the port must be specified. For actual AdLib FM cards it will be 0x388.
129 Note that this card does not have PCM support and no mixer; only FM
132 Make sure you have "sbiload" from the alsa-tools package available and,
133 after loading the module, find out the assigned ALSA sequencer port
134 number through "sbiload -l". Example output:
136 Port Client name Port name
137 64:0 OPL2 FM synth OPL2 FM Port
139 Load the std.sb and drums.sb patches also supplied by sbiload:
141 sbiload -p 64:0 std.sb drums.sb
143 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
144 instead. To have the card produce sound, use aplaymidi from alsa-utils:
146 aplaymidi -p 64:0 foo.mid
151 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
153 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
155 This module supports multiple cards, autoprobe and PnP.
160 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
162 port - port # for AD1848 chip
163 irq - IRQ # for AD1848 chip
164 dma1 - DMA # for AD1848 chip (0,1,3)
166 This module supports multiple cards. It does not support autoprobe
167 thus main port must be specified!!! Other ports are optional.
169 The power-management is supported.
174 Module for Analog Devices AD1889 chips.
176 ac97_quirk - AC'97 workaround for strange hardware
177 See the description of intel8x0 module for details.
179 This module supports multiple cards.
184 Module for ALi M5451 PCI chip.
186 pcm_channels - Number of hardware channels assigned for PCM
187 spdif - Support SPDIF I/O
190 This module supports one chip and autoprobe.
192 The power-management is supported.
197 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
199 This module supports multiple cards, autoprobe and PnP.
201 The power-management is supported.
206 Module for Avance Logic ALS300 and ALS300+
208 This module supports multiple cards.
210 The power-management is supported.
215 Module for sound cards based on Avance Logic ALS4000 PCI chip.
217 joystick_port - port # for legacy joystick support.
218 0 = disabled (default), 1 = auto-detect
220 This module supports multiple cards, autoprobe and PnP.
222 The power-management is supported.
227 Module for ATI IXP 150/200/250/400 AC97 controllers.
229 ac97_clock - AC'97 clock (default = 48000)
230 ac97_quirk - AC'97 workaround for strange hardware
231 See "AC97 Quirk Option" section below.
232 ac97_codec - Workaround to specify which AC'97 codec
233 instead of probing. If this works for you
234 file a bug with your `lspci -vn` output.
236 -1 -- Default behavior.
237 0-2 -- Use the specified codec.
238 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
240 This module supports one card and autoprobe.
242 ATI IXP has two different methods to control SPDIF output. One is
243 over AC-link and another is over the "direct" SPDIF output. The
244 implementation depends on the motherboard, and you'll need to
245 choose the correct one via spdif_aclink module option.
247 The power-management is supported.
249 Module snd-atiixp-modem
250 -----------------------
252 Module for ATI IXP 150/200/250 AC97 modem controllers.
254 This module supports one card and autoprobe.
256 Note: The default index value of this module is -2, i.e. the first
259 The power-management is supported.
261 Module snd-au8810, snd-au8820, snd-au8830
262 -----------------------------------------
264 Module for Aureal Vortex, Vortex2 and Advantage device.
266 pcifix - Control PCI workarounds
267 0 = Disable all workarounds
268 1 = Force the PCI latency of the Aureal card to 0xff
269 2 = Force the Extend PCI#2 Internal Master for Efficient
270 Handling of Dummy Requests on the VIA KT133 AGP Bridge
271 3 = Force both settings
272 255 = Autodetect what is required (default)
274 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
275 EQ, mpu401, gameport. A3D and wavetable support are still in development.
276 Development and reverse engineering work is being coordinated at
277 http://savannah.nongnu.org/projects/openvortex/
278 SPDIF output has a copy of the AC97 codec output, unless you use the
279 "spdif" pcm device, which allows raw data passthru.
280 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
283 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
284 control correctly. If you have problems regarding this, try
285 another ALSA compliant mixer (alsamixer works).
290 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
292 This module supports multiple cards, PnP and autoprobe.
294 The power-management is supported.
299 Module for sound cards based on Aztech AZF3328 PCI chip.
301 joystick - Enable joystick (default off)
303 This module supports multiple cards.
308 Module for video cards based on Bt87x chips.
310 digital_rate - Override the default digital rate (Hz)
311 load_all - Load the driver even if the card model isn't known
313 This module supports multiple cards.
315 Note: The default index value of this module is -2, i.e. the first
321 Module for Creative Audigy LS and SB Live 24bit
323 This module supports multiple cards.
329 Module for sound cards based on C-Media CMI8330 ISA chips.
331 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
333 with isapnp=0, the following options are available:
335 wssport - port # for CMI8330 chip (WSS)
336 wssirq - IRQ # for CMI8330 chip (WSS)
337 wssdma - first DMA # for CMI8330 chip (WSS)
338 sbport - port # for CMI8330 chip (SB16)
339 sbirq - IRQ # for CMI8330 chip (SB16)
340 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
341 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
343 This module supports multiple cards and autoprobe.
345 The power-management is supported.
350 Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
352 mpu_port - port address of MIDI interface (8338 only):
353 0x300,0x310,0x320,0x330 = legacy port,
354 0 = disable (default)
355 fm_port - port address of OPL-3 FM synthesizer (8x38 only):
357 1 = integrated PCI port (default on 8738),
359 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
361 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
363 This module supports autoprobe and multiple cards.
365 The power-management is supported.
370 Module for sound cards based on CS4231 ISA chips.
372 port - port # for CS4231 chip
373 mpu_port - port # for MPU-401 UART (optional), -1 = disable
374 irq - IRQ # for CS4231 chip
375 mpu_irq - IRQ # for MPU-401 UART
376 dma1 - first DMA # for CS4231 chip
377 dma2 - second DMA # for CS4231 chip
379 This module supports multiple cards. This module does not support autoprobe
380 thus main port must be specified!!! Other ports are optional.
382 The power-management is supported.
387 Module for sound cards based on CS4232/CS4232A ISA chips.
389 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
391 with isapnp=0, the following options are available:
393 port - port # for CS4232 chip (PnP setup - 0x534)
394 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
395 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
396 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
397 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
398 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
399 dma1 - first DMA # for CS4232 chip (0,1,3)
400 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
402 This module supports multiple cards. This module does not support autoprobe
403 (if ISA PnP is not used) thus main port must be specified!!! Other ports are
406 The power-management is supported.
411 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
412 CS4238B/CS4239 ISA chips.
414 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
416 with isapnp=0, the following options are available:
418 port - port # for CS4236 chip (PnP setup - 0x534)
419 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
420 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
421 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
422 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
423 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
424 dma1 - first DMA # for CS4236 chip (0,1,3)
425 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
427 This module supports multiple cards. This module does not support autoprobe
428 (if ISA PnP is not used) thus main port and control port must be
429 specified!!! Other ports are optional.
431 The power-management is supported.
436 Module for Cirrus Logic CS4281 soundchip.
438 dual_codec - Secondary codec ID (0 = disable, default)
440 This module supports multiple cards.
442 The power-management is supported.
447 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
448 CS4624/CS4630/CS4280 PCI chips.
450 external_amp - Force to enable external amplifier.
451 thinkpad - Force to enable Thinkpad's CLKRUN control.
452 mmap_valid - Support OSS mmap mode (default = 0).
454 This module supports multiple cards and autoprobe.
455 Usually external amp and CLKRUN controls are detected automatically
456 from PCI sub vendor/device ids. If they don't work, give the options
459 The power-management is supported.
464 Module for Cyrix/NatSemi Geode 5530 chip.
466 Module snd-cs5535audio
467 ----------------------
469 Module for multifunction CS5535 companion PCI device
471 The power-management is supported.
476 Module for Echoaudio Darla20
478 This module supports multiple cards.
479 The driver requires the firmware loader support on kernel.
484 Module for Echoaudio Darla24
486 This module supports multiple cards.
487 The driver requires the firmware loader support on kernel.
492 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
495 This module supports multiple cards. This module is enabled only with
498 The power-management is supported.
503 Module for the dummy sound card. This "card" doesn't do any output
504 or input, but you may use this module for any application which
505 requires a sound card (like RealPlayer).
507 The power-management is supported.
512 Module for Echoaudio 3G cards (Gina3G/Layla3G)
514 This module supports multiple cards.
515 The driver requires the firmware loader support on kernel.
520 Module for EMU10K1/EMU10k2 based PCI sound cards.
521 * Sound Blaster Live!
522 * Sound Blaster PCI 512
523 * Emu APS (partially supported)
524 * Sound Blaster Audigy
526 extin - bitmap of available external inputs for FX8010 (see bellow)
527 extout - bitmap of available external outputs for FX8010 (see bellow)
528 seq_ports - allocated sequencer ports (4 by default)
529 max_synth_voices - limit of voices used for wavetable (64 by default)
530 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
531 given in MB unit. Default value is 128.
532 enable_ir - enable IR
534 This module supports multiple cards and autoprobe.
536 Input & Output configurations [extin/extout]
537 * Creative Card wo/Digital out [0x0003/0x1f03]
538 * Creative Card w/Digital out [0x0003/0x1f0f]
539 * Creative Card w/Digital CD in [0x000f/0x1f0f]
540 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
541 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
542 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
543 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
544 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
545 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
546 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
547 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
548 * Creative Card all ins and outs [0x3fff/0x7fff]
550 The power-management is supported.
555 Module for Creative Emu10k1X (SB Live Dell OEM version)
557 This module supports multiple cards.
562 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
563 * SoundBlaster PCI 64
564 * SoundBlaster PCI 128
566 joystick - Enable joystick (default off)
568 This module supports multiple cards and autoprobe.
570 The power-management is supported.
575 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
576 * SoundBlaster PCI 64
577 * SoundBlaster PCI 128
578 * SoundBlaster Vibra PCI
580 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
581 0 = disable (default), 1 = auto-detect
583 This module supports multiple cards and autoprobe.
585 The power-management is supported.
590 Module for sound cards based on ESS ES968 chip (PnP only).
592 This module supports multiple cards, PnP and autoprobe.
594 The power-management is supported.
599 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
601 port - port # for ES-1688 chip (0x220,0x240,0x260)
602 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
603 irq - IRQ # for ES-1688 chip (5,7,9,10)
604 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
605 dma8 - DMA # for ES-1688 chip (0,1,3)
607 This module supports multiple cards and autoprobe (without MPU-401 port).
612 Module for ESS AudioDrive ES-18xx sound cards.
614 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
616 with isapnp=0, the following options are available:
618 port - port # for ES-18xx chip (0x220,0x240,0x260)
619 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
620 fm_port - port # for FM (optional, not used)
621 irq - IRQ # for ES-18xx chip (5,7,9,10)
622 dma1 - first DMA # for ES-18xx chip (0,1,3)
623 dma2 - first DMA # for ES-18xx chip (0,1,3)
625 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
626 port if native ISA PnP routines are not used).
627 When dma2 is equal with dma1, the driver works as half-duplex.
629 The power-management is supported.
634 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
636 This module supports multiple cards and autoprobe.
638 The power-management is supported.
643 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
645 total_bufsize - total buffer size in kB (1-4096kB)
646 pcm_substreams_p - playback channels (1-8, default=2)
647 pcm_substreams_c - capture channels (1-8, default=0)
648 clock - clock (0 = auto-detection)
649 use_pm - support the power-management (0 = off, 1 = on,
651 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
652 joystick - enable joystick (default off)
654 This module supports multiple cards and autoprobe.
656 The power-management is supported.
661 Module for ForteMedia FM801 based PCI sound cards.
663 tea575x_tuner - Enable TEA575x tuner
664 - 1 = MediaForte 256-PCS
665 - 2 = MediaForte 256-PCPR
666 - 3 = MediaForte 64-PCR
667 - High 16-bits are video (radio) device number + 1
668 - example: 0x10002 (MediaForte 256-PCPR, device 1)
670 This module supports multiple cards and autoprobe.
672 The power-management is supported.
677 Module for Echoaudio Gina20
679 This module supports multiple cards.
680 The driver requires the firmware loader support on kernel.
685 Module for Echoaudio Gina24
687 This module supports multiple cards.
688 The driver requires the firmware loader support on kernel.
690 Module snd-gusclassic
691 ---------------------
693 Module for Gravis UltraSound Classic sound card.
695 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
696 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
697 dma1 - DMA # for GF1 chip (1,3,5,6,7)
698 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
699 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
700 voices - GF1 voices limit (14-32)
701 pcm_voices - reserved PCM voices
703 This module supports multiple cards and autoprobe.
705 Module snd-gusextreme
706 ---------------------
708 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
710 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
711 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
712 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
713 irq - IRQ # for ES-1688 chip (5,7,9,10)
714 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
715 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
716 dma8 - DMA # for ES-1688 chip (0,1,3)
717 dma1 - DMA # for GF1 chip (1,3,5,6,7)
718 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
719 voices - GF1 voices limit (14-32)
720 pcm_voices - reserved PCM voices
722 This module supports multiple cards and autoprobe (without MPU-401 port).
727 Module for Gravis UltraSound MAX sound card.
729 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
730 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
731 dma1 - DMA # for GF1 chip (1,3,5,6,7)
732 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
733 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
734 voices - GF1 voices limit (14-32)
735 pcm_voices - reserved PCM voices
737 This module supports multiple cards and autoprobe.
742 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),
743 ATI SB450, SB600, RS600,
747 [Multiple options for each card instance]
748 model - force the model name
749 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
750 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
752 [Single (global) options]
753 single_cmd - Use single immediate commands to communicate with
754 codecs (for debugging only)
755 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
756 power_save - Automatic power-saving timtout (in second, 0 =
758 power_save_controller - Reset HD-audio controller in power-saving mode
761 This module supports multiple cards and autoprobe.
763 Each codec may have a model table for different configurations.
764 If your machine isn't listed there, the default (usually minimal)
765 configuration is set up. You can pass "model=<name>" option to
766 specify a certain model in such a case. There are different
767 models depending on the codec chip.
769 Model name Description
770 ---------- -----------
772 3stack 3-jack in back and a headphone out
773 3stack-digout 3-jack in back, a HP out and a SPDIF out
774 5stack 5-jack in back, 2-jack in front
775 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
776 6stack 6-jack in back, 2-jack in front
777 6stack-digout 6-jack with a SPDIF out
779 z71v 3-jack (HP shared SPDIF)
780 asus 3-jack (ASUS Mobo)
782 asus-dig ASUS with SPDIF out
783 asus-dig2 ASUS with SPDIF out (using GPIO2)
785 fujitsu Fujitsu Laptops (Pi1536)
787 lg LG laptop (m1 express dual)
788 lg-lw LG LW20/LW25 laptop
790 clevo Clevo laptops (m520G, m665n)
791 test for testing/debugging purpose, almost all controls can be
792 adjusted. Appearing only when compiled with
794 auto auto-config reading BIOS (default)
798 hp-3013 HP machines (3013-variant)
799 fujitsu Fujitsu S7020
801 will Will laptops (PB V7900)
802 replacer Replacer 672V
803 basic fixed pin assignment (old default model)
804 test for testing/debugging purpose, almost all controls can
805 adjusted. Appearing only when compiled with
807 auto auto-config reading BIOS (default)
810 fujitsu Fujitsu Laptop
811 hp-bpc HP xw4400/6400/8400/9400 laptops
812 hp-bpc-d7000 HP BPC D7000
813 hp-tc-t5735 HP Thin Client T5735
816 hippo Hippo (ATI) with jack detection, Sony UX-90s
817 hippo_1 Hippo (Benq) with jack detection
818 sony-assamd Sony ASSAMD
819 ultra Samsung Q1 Ultra Vista model
820 basic fixed pin assignment w/o SPDIF
821 auto auto-config reading BIOS (default)
827 test for testing/debugging purpose, almost all controls can
828 adjusted. Appearing only when compiled with
830 auto auto-config reading BIOS (default)
833 3stack-dig 3-stack (2-channel) with SPDIF
834 3stack-6ch 3-stack (6-channel)
835 3stack-6ch-dig 3-stack (6-channel) with SPDIF
836 6stack-dig 6-stack with SPDIF
837 lenovo-101e Lenovo laptop
838 eeepc-p701 ASUS Eeepc
839 auto auto-config reading BIOS (default)
842 3stack-dig 3-jack with SPDIF I/O
843 6stack-dig 6-jack digital with SPDIF I/O
845 targa Targa T8, MSI-1049 T8
848 macpro MacPro support
849 mbp3 Macbook Pro rev3
850 imac24 iMac 24'' with jack detection
852 auto auto-config reading BIOS (default)
855 3stack-dig 3-jack with SPDIF I/O
856 6stack-dig 6-jack digital with SPDIF I/O
857 3stack-6ch 3-jack 6-channel
858 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
859 6stack-dig-demo 6-jack digital for Intel demo board
860 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
861 acer-aspire Acer Aspire 9810
862 medion Medion Laptops
863 medion-md2 Medion MD2
865 targa-2ch-dig Targs/MSI with 2-channel
866 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
867 lenovo-101e Lenovo 101E
868 lenovo-nb0763 Lenovo NB0763
869 lenovo-ms7195-dig Lenovo MS7195
871 6stack-hp HP machines with 6stack (Nettle boards)
872 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
874 auto auto-config reading BIOS (default)
878 3stack-dig 3-jack with SPDIF I/O
879 6stack-dig 6-jack with SPDIF I/O
880 3stack-660 3-jack (for ALC660)
881 uniwill-m31 Uniwill M31 laptop
882 toshiba Toshiba laptop support
883 asus Asus laptop support
884 asus-laptop ASUS F2/F3 laptops
885 auto auto-config reading BIOS (default)
889 3stack-dig 3-jack with SPDIF OUT
890 6stack-dig 6-jack with SPDIF OUT
891 3stack-660 3-jack (for ALC660VD)
892 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
893 lenovo Lenovo 3000 C200
894 dallas Dallas laptops
896 auto auto-config reading BIOS (default)
899 minimal 3-jack in back
900 min_fp 3-jack in back, 2-jack in front
901 full 6-jack in back, 2-jack in front
902 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
903 allout 5-jack in back, 2-jack in front, SPDIF out
904 auto auto-config reading BIOS (default)
907 3stack 3-stack mode (default)
914 basic 3-jack (default)
916 thinkpad Lenovo Thinkpad T60/X60/Z60
923 basic default configuration
924 thinkpad Lenovo Thinkpad T61/X61
927 6stack 6-jack, separate surrounds (default)
928 3stack 3-stack, shared surrounds
929 laptop 2-channel only (FSC V2060, Samsung M50)
930 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
931 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
932 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
936 6stack-dig ditto with SPDIF
938 3stack-dig ditto with SPDIF
939 laptop 3-jack with hp-jack automute
940 laptop-dig ditto with SPDIF
941 auto auto-config reading BIOS (default)
945 test for testing/debugging purpose, almost all controls
946 can be adjusted. Appearing only when compiled with
950 laptop Basic Laptop config
951 laptop-hp Laptop config for some HP models (subdevice 30A5)
952 laptop-eapd Laptop config with EAPD support
953 test for testing/debugging purpose, almost all controls
954 can be adjusted. Appearing only when compiled with
959 dell-d21 Dell (unknown)
960 dell-d22 Dell (unknown)
961 dell-d23 Dell (unknown)
962 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
963 dell-m22 Dell Latitude D620, Dell Latitude D820
964 dell-m23 Dell XPS M1710, Dell Precision M90
965 dell-m24 Dell Latitude 120L
966 dell-m25 Dell Inspiron E1505n
967 dell-m26 Dell Inspiron 1501
968 dell-m27 Dell Inspiron E1705/9400
969 gateway Gateway laptops with EAPD control
973 dell-m42 Dell (unknown)
974 dell-m43 Dell Precision
975 dell-m44 Dell Inspiron
980 5stack D945 5stack + SPDIF
981 intel-mac-v1 Intel Mac Type 1
982 intel-mac-v2 Intel Mac Type 2
983 intel-mac-v3 Intel Mac Type 3
984 intel-mac-v4 Intel Mac Type 4
985 intel-mac-v5 Intel Mac Type 5
986 macmini Intel Mac Mini (equivalent with type 3)
987 macbook Intel Mac Book (eq. type 5)
988 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
989 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
990 imac-intel Intel iMac (eq. type 2)
991 imac-intel-20 Intel iMac (newer version) (eq. type 3)
992 dell-d81 Dell (unknown)
993 dell-d82 Dell (unknown)
994 dell-m81 Dell (unknown)
995 dell-m82 Dell XPS M1210
998 ref Reference board, base config
999 m2-2 Some Gateway MX series laptops
1000 m6 Some Gateway NX series laptops
1001 pa6 Gateway NX860 series
1003 STAC9227/9228/9229/927x
1006 5stack D965 5stack + SPDIF
1007 dell-3stack Dell Dimension E520
1010 vaio Setup for VAIO FE550G/SZ110
1011 vaio-ar Setup for VAIO AR
1013 The model name "genric" is treated as a special case. When this
1014 model is given, the driver uses the generic codec parser without
1015 "codec-patch". It's sometimes good for testing and debugging.
1017 If the default configuration doesn't work and one of the above
1018 matches with your device, report it together with the PCI
1019 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1020 ML (see the section "Links and Addresses").
1022 power_save and power_save_controller options are for power-saving
1023 mode. See powersave.txt for details.
1025 Note 2: If you get click noises on output, try the module option
1026 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1027 register value without FIFO size correction as the current
1028 DMA pointer. position_fix=2 will make the driver to use
1029 the position buffer instead of reading SD_LPIB register.
1030 (Usually SD_LPLIB register is more accurate than the
1033 NB: If you get many "azx_get_response timeout" messages at
1034 loading, it's likely a problem of interrupts (e.g. ACPI irq
1035 routing). Try to boot with options like "pci=noacpi". Also, you
1036 can try "single_cmd=1" module option. This will switch the
1037 communication method between HDA controller and codecs to the
1038 single immediate commands instead of CORB/RIRB. Basically, the
1039 single command mode is provided only for BIOS, and you won't get
1040 unsolicited events, too. But, at least, this works independently
1041 from the irq. Remember this is a last resort, and should be
1042 avoided as much as possible...
1044 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1045 On some hardwares, you may need to add a proper probe_mask option
1046 to avoid the "azx_get_response timeout" problem above, instead.
1047 This occurs when the access to non-existing or non-working codec slot
1048 (likely a modem one) causes a stall of the communication via HD-audio
1049 bus. You can see which codec slots are probed by enabling
1050 CONFIG_SND_DEBUG_DETECT, or simply from the file name of the codec
1051 proc files. Then limit the slots to probe by probe_mask option.
1052 For example, probe_mask=1 means to probe only the first slot, and
1053 probe_mask=4 means only the third slot.
1055 The power-management is supported.
1060 Module for RME Hammerfall DSP audio interface(s)
1062 This module supports multiple cards.
1064 Note: The firmware data can be automatically loaded via hotplug
1065 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1066 the firmware via hdsploader utility included in alsa-tools
1068 The firmware data is found in alsa-firmware package.
1070 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1071 module did formerly. It will allocate the buffers in advance
1072 when any HDSP cards are found. To make the buffer
1073 allocation sure, load snd-page-alloc module in the early
1074 stage of boot sequence. See "Early Buffer Allocation"
1080 Module for RME HDSP MADI board.
1082 precise_ptr - Enable precise pointer, or disable.
1083 line_outs_monitor - Send playback streams to analog outs by default.
1084 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1086 See hdspm.txt for details.
1091 Module for Envy24 (ICE1712) based PCI sound cards.
1092 * MidiMan M Audio Delta 1010
1093 * MidiMan M Audio Delta 1010LT
1094 * MidiMan M Audio Delta DiO 2496
1095 * MidiMan M Audio Delta 66
1096 * MidiMan M Audio Delta 44
1097 * MidiMan M Audio Delta 410
1098 * MidiMan M Audio Audiophile 2496
1101 * TerraTec EWX 24/96
1102 * TerraTec DMX 6Fire
1104 * Hoontech SoundTrack DSP 24
1105 * Hoontech SoundTrack DSP 24 Value
1106 * Hoontech SoundTrack DSP 24 Media 7.1
1107 * Event Electronics, EZ8
1109 * Lionstracs, Mediastaton
1111 model - Use the given board model, one of the following:
1112 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1113 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1114 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1115 phase88, mediastation
1116 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1117 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1118 in msec resolution, default value is 500 (0.5 sec)
1120 This module supports multiple cards and autoprobe. Note: The consumer part
1121 is not used with all Envy24 based cards (for example in the MidiMan Delta
1124 Note: The supported board is detected by reading EEPROM or PCI
1125 SSID (if EEPROM isn't available). You can override the
1126 model by passing "model" module option in case that the
1127 driver isn't configured properly or you want to try another
1133 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1134 * MidiMan M Audio Revolution 5.1
1135 * MidiMan M Audio Revolution 7.1
1136 * MidiMan M Audio Audiophile 192
1138 * TerraTec Aureon 5.1 Sky
1139 * TerraTec Aureon 7.1 Space
1140 * TerraTec Aureon 7.1 Universe
1143 * AudioTrak Prodigy 7.1
1144 * AudioTrak Prodigy 7.1LT
1145 * AudioTrak Prodigy 192
1147 * Albatron K8X800 Pro II
1148 * Chaintech ZNF3-150
1149 * Chaintech ZNF3-250
1156 model - Use the given board model, one of the following:
1157 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1158 prodigy192, aureon51, aureon71, universe, ap192,
1159 k8x800, phase22, phase28, ms300, av710, se200pci,
1162 This module supports multiple cards and autoprobe.
1164 Note: The supported board is detected by reading EEPROM or PCI
1165 SSID (if EEPROM isn't available). You can override the
1166 model by passing "model" module option in case that the
1167 driver isn't configured properly or you want to try another
1173 Module for Echoaudio Indigo
1175 This module supports multiple cards.
1176 The driver requires the firmware loader support on kernel.
1181 Module for Echoaudio Indigo DJ
1183 This module supports multiple cards.
1184 The driver requires the firmware loader support on kernel.
1189 Module for Echoaudio Indigo IO
1191 This module supports multiple cards.
1192 The driver requires the firmware loader support on kernel.
1197 Module for AC'97 motherboards from Intel and compatibles.
1198 * Intel i810/810E, i815, i820, i830, i84x, MX440
1199 ICH5, ICH6, ICH7, ESB2
1200 * SiS 7012 (SiS 735)
1201 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1203 * AMD AMD768, AMD8111
1206 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1207 ac97_quirk - AC'97 workaround for strange hardware
1208 See "AC97 Quirk Option" section below.
1209 buggy_irq - Enable workaround for buggy interrupts on some
1210 motherboards (default yes on nForce chips,
1212 buggy_semaphore - Enable workaround for hardwares with buggy
1213 semaphores (e.g. on some ASUS laptops)
1215 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1216 from the controller chip
1217 (0 = off, 1 = on, -1 = default)
1219 This module supports one chip and autoprobe.
1221 Note: the latest driver supports auto-detection of chip clock.
1222 if you still encounter too fast playback, specify the clock
1223 explicitly via the module option "ac97_clock=41194".
1225 Joystick/MIDI ports are not supported by this driver. If your
1226 motherboard has these devices, use the ns558 or snd-mpu401
1227 modules, respectively.
1229 The power-management is supported.
1231 Module snd-intel8x0m
1232 --------------------
1234 Module for Intel ICH (i8x0) chipset MC97 modems.
1235 * Intel i810/810E, i815, i820, i830, i84x, MX440
1237 * SiS 7013 (SiS 735)
1238 * NVidia NForce, NForce2, NForce2s, NForce3
1242 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1244 This module supports one card and autoprobe.
1246 Note: The default index value of this module is -2, i.e. the first
1249 The power-management is supported.
1251 Module snd-interwave
1252 --------------------
1254 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1255 and other sound cards based on AMD InterWave (tm) chip.
1257 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1258 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1259 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1260 effect - 1 = InterWave effects enable (default 0);
1262 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1264 with isapnp=0, the following options are available:
1266 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1267 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1268 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1269 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1271 This module supports multiple cards, autoprobe and ISA PnP.
1273 Module snd-interwave-stb
1274 ------------------------
1276 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1277 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1278 circuit for extended control of bass, treble and master volume.
1280 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1281 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1282 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1283 effect - 1 = InterWave effects enable (default 0);
1285 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1287 with isapnp=0, the following options are available:
1289 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1290 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1291 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1292 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1293 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1295 This module supports multiple cards, autoprobe and ISA PnP.
1300 Module for Korg 1212 IO PCI card
1302 This module supports multiple cards.
1307 Module for Echoaudio Layla20
1309 This module supports multiple cards.
1310 The driver requires the firmware loader support on kernel.
1315 Module for Echoaudio Layla24
1317 This module supports multiple cards.
1318 The driver requires the firmware loader support on kernel.
1323 Module for Allegro/Maestro3 chips
1325 external_amp - enable external amp (enabled by default)
1326 amp_gpio - GPIO pin number for external amp (0-15) or
1327 -1 for default pin (8 for allegro, 1 for
1330 This module supports autoprobe and multiple chips.
1332 Note: the binding of amplifier is dependent on hardware.
1333 If there is no sound even though all channels are unmuted, try to
1334 specify other gpio connection via amp_gpio option.
1335 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1338 The power-management is supported.
1343 Module for Echoaudio Mia
1345 This module supports multiple cards.
1346 The driver requires the firmware loader support on kernel.
1351 Module for Miro soundcards: miroSOUND PCM 1 pro,
1353 miroSOUND PCM 20 Radio.
1355 port - Port # (0x530,0x604,0xe80,0xf40)
1356 irq - IRQ # (5,7,9,10,11)
1357 dma1 - 1st dma # (0,1,3)
1358 dma2 - 2nd dma # (0,1)
1359 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1360 mpu_irq - MPU-401 irq # (5,7,9,10)
1361 fm_port - FM Port # (0x388)
1362 wss - enable WSS mode
1363 ide - enable onboard ide support
1368 Module for Digigram miXart8 sound cards.
1370 This module supports multiple cards.
1371 Note: One miXart8 board will be represented as 4 alsa cards.
1372 See MIXART.txt for details.
1374 When the driver is compiled as a module and the hotplug firmware
1375 is supported, the firmware data is loaded via hotplug automatically.
1376 Install the necessary firmware files in alsa-firmware package.
1377 When no hotplug fw loader is available, you need to load the
1378 firmware via mixartloader utility in alsa-tools package.
1383 Module for Echoaudio Mona
1385 This module supports multiple cards.
1386 The driver requires the firmware loader support on kernel.
1391 Module for MPU-401 UART devices.
1393 port - port number or -1 (disable)
1394 irq - IRQ number or -1 (disable)
1395 pnp - PnP detection - 0 = disable, 1 = enable (default)
1397 This module supports multiple devices and PnP.
1402 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1405 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1406 irq - IRQ # for MTPAV (7,5, default=7)
1407 hwports - number of supported hardware ports, default=8.
1409 Module supports only 1 card. This module has no enable option.
1414 Module for Ego Systems (ESI) Miditerminal 4140
1416 This module supports multiple devices.
1417 Requires parport (CONFIG_PARPORT).
1422 Module for NeoMagic NM256AV/ZX chips
1424 playback_bufsize - max playback frame size in kB (4-128kB)
1425 capture_bufsize - max capture frame size in kB (4-128kB)
1426 force_ac97 - 0 or 1 (disabled by default)
1427 buffer_top - specify buffer top address
1428 use_cache - 0 or 1 (disabled by default)
1429 vaio_hack - alias buffer_top=0x25a800
1430 reset_workaround - enable AC97 RESET workaround for some laptops
1431 reset_workaround2 - enable extended AC97 RESET workaround for some
1434 This module supports one chip and autoprobe.
1436 The power-management is supported.
1438 Note: on some notebooks the buffer address cannot be detected
1439 automatically, or causes hang-up during initialization.
1440 In such a case, specify the buffer top address explicitly via
1441 the buffer_top option.
1443 Sony F250: buffer_top=0x25a800
1444 Sony F270: buffer_top=0x272800
1445 The driver supports only ac97 codec. It's possible to force
1446 to initialize/use ac97 although it's not detected. In such a
1447 case, use force_ac97=1 option - but *NO* guarantee whether it
1450 Note: The NM256 chip can be linked internally with non-AC97
1451 codecs. This driver supports only the AC97 codec, and won't work
1452 with machines with other (most likely CS423x or OPL3SAx) chips,
1453 even though the device is detected in lspci. In such a case, try
1454 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1455 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1456 and proper hardware parameters in the case without ISA PnP.
1458 Note: some laptops need a workaround for AC97 RESET. For the
1459 known hardware like Dell Latitude LS and Sony PCG-F305, this
1460 workaround is enabled automatically. For other laptops with a
1461 hard freeze, you can try reset_workaround=1 option.
1463 Note: Dell Latitude CSx laptops have another problem regarding
1464 AC97 RESET. On these laptops, reset_workaround2 option is
1465 turned on as default. This option is worth to try if the
1466 previous reset_workaround option doesn't help.
1468 Note: This driver is really crappy. It's a porting from the
1469 OSS driver, which is a result of black-magic reverse engineering.
1470 The detection of codec will fail if the driver is loaded *after*
1471 X-server as described above. You might be able to force to load
1472 the module, but it may result in hang-up. Hence, make sure that
1473 you load this module *before* X if you encounter this kind of
1479 Module for Yamaha OPL3-SA2/SA3 sound cards.
1481 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1483 with isapnp=0, the following options are available:
1485 port - control port # for OPL3-SA chip (0x370)
1486 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1487 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1488 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1489 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1490 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1491 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1492 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1494 This module supports multiple cards and ISA PnP. It does not support
1495 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1497 The power-management is supported.
1499 Module snd-opti92x-ad1848
1500 -------------------------
1502 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1503 Module works with OAK Mozart cards as well.
1505 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1507 with isapnp=0, the following options are available:
1509 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1510 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1511 fm_port - port # for OPL3 device (0x388)
1512 irq - IRQ # for WSS chip (5,7,9,10,11)
1513 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1514 dma1 - first DMA # for WSS chip (0,1,3)
1516 This module supports only one card, autoprobe and PnP.
1518 Module snd-opti92x-cs4231
1519 -------------------------
1521 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1523 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1525 with isapnp=0, the following options are available:
1527 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1528 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1529 fm_port - port # for OPL3 device (0x388)
1530 irq - IRQ # for WSS chip (5,7,9,10,11)
1531 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1532 dma1 - first DMA # for WSS chip (0,1,3)
1533 dma2 - second DMA # for WSS chip (0,1,3)
1535 This module supports only one card, autoprobe and PnP.
1540 Module for sound cards based on OPTi 82c93x chips.
1542 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1544 with isapnp=0, the following options are available:
1546 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1547 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1548 fm_port - port # for OPL3 device (0x388)
1549 irq - IRQ # for WSS chip (5,7,9,10,11)
1550 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1551 dma1 - first DMA # for WSS chip (0,1,3)
1552 dma2 - second DMA # for WSS chip (0,1,3)
1554 This module supports only one card, autoprobe and PnP.
1559 Module for Digigram PCXHR boards
1561 This module supports multiple cards.
1563 Module snd-portman2x4
1564 ---------------------
1566 Module for Midiman Portman 2x4 parallel port MIDI interface
1568 This module supports multiple cards.
1570 Module snd-powermac (on ppc only)
1571 ---------------------------------
1573 Module for PowerMac, iMac and iBook on-board soundchips
1575 enable_beep - enable beep using PCM (enabled as default)
1577 Module supports autoprobe a chip.
1579 Note: the driver may have problems regarding endianess.
1581 The power-management is supported.
1583 Module snd-pxa2xx-ac97 (on arm only)
1584 ------------------------------------
1586 Module for AC97 driver for the Intel PXA2xx chip
1588 For ARM architecture only.
1590 The power-management is supported.
1595 Module for Conexant Riptide chip
1597 joystick_port - Joystick port # (default: 0x200)
1598 mpu_port - MPU401 port # (default: 0x330)
1599 opl3_port - OPL3 port # (default: 0x388)
1601 This module supports multiple cards.
1602 The driver requires the firmware loader support on kernel.
1603 You need to install the firmware file "riptide.hex" to the standard
1604 firmware path (e.g. /lib/firmware).
1609 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1610 Prodif96 and Prodif Gold) sound cards.
1612 This module supports multiple cards.
1617 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1619 This module supports multiple cards.
1624 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1626 precise_ptr - Enable precise pointer (doesn't work reliably).
1629 This module supports multiple cards.
1631 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1632 module did formerly. It will allocate the buffers in advance
1633 when any RME9652 cards are found. To make the buffer
1634 allocation sure, load snd-page-alloc module in the early
1635 stage of boot sequence. See "Early Buffer Allocation"
1638 Module snd-sa11xx-uda1341 (on arm only)
1639 ---------------------------------------
1641 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1643 Module supports only one card.
1644 Module has no enable and index options.
1646 The power-management is supported.
1651 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1655 port - port # for SB DSP chip (0x220,0x240,0x260)
1656 irq - IRQ # for SB DSP chip (5,7,9,10)
1657 dma8 - DMA # for SB DSP chip (1,3)
1659 This module supports multiple cards and autoprobe.
1661 The power-management is supported.
1663 Module snd-sb16 and snd-sbawe
1664 -----------------------------
1666 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1667 SoundBlaster AWE 32 (PnP),
1668 SoundBlaster AWE 64 PnP
1670 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1671 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1672 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1674 with isapnp=0, the following options are available:
1676 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1677 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1678 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1679 (snd-sbawe module only)
1680 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1681 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1682 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1684 This module supports multiple cards, autoprobe and ISA PnP.
1686 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1687 disable 16bit DMA with dma16 = -1 module parameter.
1688 Also, all Sound Blaster 16 type cards can operate in 16-bit
1689 half duplex mode through 8-bit DMA channel by disabling their
1692 The power-management is supported.
1697 Module for Gallant SC-6000 soundcard.
1699 port - Port # (0x220 or 0x240)
1700 mss_port - MSS Port # (0x530 or 0xe80)
1701 irq - IRQ # (5,7,9,10,11)
1702 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1705 This module supports multiple cards.
1707 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1712 Module for Aztech Sound Galaxy sound card.
1714 sbport - Port # for SB16 interface (0x220,0x240)
1715 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1716 irq - IRQ # (7,9,10,11)
1719 This module supports multiple cards.
1721 The power-management is supported.
1726 Module for ENSONIQ SoundScape PnP cards.
1728 port - Port # (PnP setup)
1729 wss_port - WSS Port # (PnP setup)
1730 irq - IRQ # (PnP setup)
1731 mpu_irq - MPU-401 IRQ # (PnP setup)
1732 dma - DMA # (PnP setup)
1733 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1735 This module supports multiple cards. ISA PnP must be enabled.
1736 You need sscape_ctl tool in alsa-tools package for loading
1739 Module snd-sun-amd7930 (on sparc only)
1740 --------------------------------------
1742 Module for AMD7930 sound chips found on Sparcs.
1744 This module supports multiple cards.
1746 Module snd-sun-cs4231 (on sparc only)
1747 -------------------------------------
1749 Module for CS4231 sound chips found on Sparcs.
1751 This module supports multiple cards.
1753 Module snd-sun-dbri (on sparc only)
1754 -----------------------------------
1756 Module for DBRI sound chips found on Sparcs.
1758 This module supports multiple cards.
1760 Module snd-wavefront
1761 --------------------
1763 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1765 use_cs4232_midi - Use CS4232 MPU-401 interface
1766 (inaccessibly located inside your computer)
1767 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1769 with isapnp=0, the following options are available:
1771 cs4232_pcm_port - Port # for CS4232 PCM interface.
1772 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1773 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1774 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1775 ics2115_port - Port # for ICS2115
1776 ics2115_irq - IRQ # for ICS2115
1777 fm_port - FM OPL-3 Port #
1778 dma1 - DMA1 # for CS4232 PCM interface.
1779 dma2 - DMA2 # for CS4232 PCM interface.
1781 The below are options for wavefront_synth features:
1782 wf_raw - Assume that we need to boot the OS (default:no)
1783 If yes, then during driver loading, the state of the board is
1784 ignored, and we reset the board and load the firmware anyway.
1785 fx_raw - Assume that the FX process needs help (default:yes)
1786 If false, we'll leave the FX processor in whatever state it is
1787 when the driver is loaded. The default is to download the
1788 microprogram and associated coefficients to set it up for
1789 "default" operation, whatever that means.
1790 debug_default - Debug parameters for card initialization
1791 wait_usecs - How long to wait without sleeping, usecs
1793 This magic number seems to give pretty optimal throughput
1794 based on my limited experimentation.
1795 If you want to play around with it and find a better value, be
1796 my guest. Remember, the idea is to get a number that causes us
1797 to just busy wait for as many WaveFront commands as possible,
1798 without coming up with a number so large that we hog the whole
1800 Specifically, with this number, out of about 134,000 status
1801 waits, only about 250 result in a sleep.
1802 sleep_interval - How long to sleep when waiting for reply
1804 sleep_tries - How many times to try sleeping during a wait
1806 ospath - Pathname to processed ICS2115 OS firmware
1807 (default:wavefront.os)
1808 The path name of the ISC2115 OS firmware. In the recent
1809 version, it's handled via firmware loader framework, so it
1810 must be installed in the proper path, typically,
1812 reset_time - How long to wait for a reset to take effect
1814 ramcheck_time - How many seconds to wait for the RAM test
1816 osrun_time - How many seconds to wait for the ICS2115 OS
1819 This module supports multiple cards and ISA PnP.
1821 Note: the firmware file "wavefront.os" was located in the earlier
1822 version in /etc. Now it's loaded via firmware loader, and
1823 must be in the proper firmware path, such as /lib/firmware.
1824 Copy (or symlink) the file appropriately if you get an error
1825 regarding firmware downloading after upgrading the kernel.
1827 Module snd-sonicvibes
1828 ---------------------
1830 Module for S3 SonicVibes PCI sound cards.
1831 * PINE Schubert 32 PCI
1833 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1834 - SoundCard must have onboard SRAM for this.
1835 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1837 This module supports multiple cards and autoprobe.
1839 Module snd-serial-u16550
1840 ------------------------
1842 Module for UART16550A serial MIDI ports.
1844 port - port # for UART16550A chip
1845 irq - IRQ # for UART16550A chip, -1 = poll mode
1846 speed - speed in bauds (9600,19200,38400,57600,115200)
1848 base - base for divisor in bauds (57600,115200,230400,460800)
1850 outs - number of MIDI ports in a serial port (1-4)
1852 adaptor - Type of adaptor.
1853 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1854 3 = MS-124W M/B, 4 = Generic
1856 This module supports multiple cards. This module does not support autoprobe
1857 thus the main port must be specified!!! Other options are optional.
1862 Module for Trident 4DWave DX/NX sound cards.
1863 * Best Union Miss Melody 4DWave PCI
1865 * Warpspeed ONSpeed 4DWave PCI
1868 * CHIC True Sound 4Dwave
1869 * Shark Predator4D-PCI
1870 * Jaton SonicWave 4D
1872 pcm_channels - max channels (voices) reserved for PCM
1873 wavetable_size - max wavetable size in kB (4-?kb)
1875 This module supports multiple cards and autoprobe.
1877 The power-management is supported.
1879 Module snd-usb-audio
1880 --------------------
1882 Module for USB audio and USB MIDI devices.
1884 vid - Vendor ID for the device (optional)
1885 pid - Product ID for the device (optional)
1886 device_setup - Device specific magic number (optional)
1887 - Influence depends on the device
1890 This module supports multiple devices, autoprobe and hotplugging.
1892 Module snd-usb-caiaq
1893 --------------------
1895 Module for caiaq UB audio interfaces,
1896 * Native Instruments RigKontrol2
1897 * Native Instruments Kore Controller
1898 * Native Instruments Audio Kontrol 1
1899 * Native Instruments Audio 8 DJ
1901 This module supports multiple devices, autoprobe and hotplugging.
1903 Module snd-usb-usx2y
1904 --------------------
1906 Module for Tascam USB US-122, US-224 and US-428 devices.
1908 This module supports multiple devices, autoprobe and hotplugging.
1910 Note: you need to load the firmware via usx2yloader utility included
1911 in alsa-tools and alsa-firmware packages.
1916 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1917 8233A, 8233C, 8235, 8237 (south) bridge.
1919 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1921 joystick - Enable joystick (default off) [VIA686A/686B only]
1922 ac97_clock - AC'97 codec clock base (default 48000Hz)
1923 dxs_support - support DXS channels,
1924 0 = auto (default), 1 = enable, 2 = disable,
1925 3 = 48k only, 4 = no VRA, 5 = enable any sample
1926 rate and different sample rates on different
1928 [VIA8233/C, 8235, 8237 only]
1929 ac97_quirk - AC'97 workaround for strange hardware
1930 See "AC97 Quirk Option" section below.
1932 This module supports one chip and autoprobe.
1934 Note: on some SMP motherboards like MSI 694D the interrupts might
1935 not be generated properly. In such a case, please try to
1936 set the SMP (or MPS) version on BIOS to 1.1 instead of
1937 default value 1.4. Then the interrupt number will be
1938 assigned under 15. You might also upgrade your BIOS.
1940 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1941 channels as the first PCM. On these channels, up to 4
1942 streams can be played at the same time, and the controller
1943 can perform sample rate conversion with separate rates for
1945 As default (dxs_support = 0), 48k fixed rate is chosen
1946 except for the known devices since the output is often
1947 noisy except for 48k on some mother boards due to the
1949 Please try once dxs_support=5 and if it works on other
1950 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1951 know the PCI subsystem vendor/device id's (output of
1953 If dxs_support=5 does not work, try dxs_support=4; if it
1954 doesn't work too, try dxs_support=1. (dxs_support=1 is
1955 usually for old motherboards. The correct implemented
1956 board should work with 4 or 5.) If it still doesn't
1957 work and the default setting is ok, dxs_support=3 is the
1958 right choice. If the default setting doesn't work at all,
1959 try dxs_support=2 to disable the DXS channels.
1960 In any cases, please let us know the result and the
1961 subsystem vendor/device ids. See "Links and Addresses"
1964 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1965 additionally. The mpu_port option is for VIA686 chips only.
1967 The power-management is supported.
1969 Module snd-via82xx-modem
1970 ------------------------
1972 Module for VIA82xx AC97 modem
1974 ac97_clock - AC'97 codec clock base (default 48000Hz)
1976 This module supports one card and autoprobe.
1978 Note: The default index value of this module is -2, i.e. the first
1981 The power-management is supported.
1986 Module for virtual rawmidi devices.
1987 This module creates virtual rawmidi devices which communicate
1988 to the corresponding ALSA sequencer ports.
1990 midi_devs - MIDI devices # (1-4, default=4)
1992 This module supports multiple cards.
1997 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1999 mic - Enable Microphone on V222 Mic (NYI)
2000 ibl - Capture IBL size. (default = 0, minimum size)
2002 This module supports multiple cards.
2004 When the driver is compiled as a module and the hotplug firmware
2005 is supported, the firmware data is loaded via hotplug automatically.
2006 Install the necessary firmware files in alsa-firmware package.
2007 When no hotplug fw loader is available, you need to load the
2008 firmware via vxloader utility in alsa-tools package. To invoke
2009 vxloader automatically, add the following to /etc/modprobe.conf
2011 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2013 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2014 /etc/modules.conf, instead.)
2015 IBL size defines the interrupts period for PCM. The smaller size
2016 gives smaller latency but leads to more CPU consumption, too.
2017 The size is usually aligned to 126. As default (=0), the smallest
2018 size is chosen. The possible IBL values can be found in
2019 /proc/asound/cardX/vx-status proc file.
2021 The power-management is supported.
2026 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2028 ibl - Capture IBL size. (default = 0, minimum size)
2030 This module supports multiple cards. The module is compiled only when
2031 PCMCIA is supported on kernel.
2033 With the older 2.6.x kernel, to activate the driver via the card
2034 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2035 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2036 longer require a config file.
2038 When the driver is compiled as a module and the hotplug firmware
2039 is supported, the firmware data is loaded via hotplug automatically.
2040 Install the necessary firmware files in alsa-firmware package.
2041 When no hotplug fw loader is available, you need to load the
2042 firmware via vxloader utility in alsa-tools package.
2044 About capture IBL, see the description of snd-vx222 module.
2046 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2049 The power-management is supported.
2054 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2056 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2057 1 (auto-detect for YMF744/754 only)
2058 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2059 1 (auto-detect for YMF744/754 only)
2060 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2062 rear_switch - enable shared rear/line-in switch (bool)
2064 This module supports autoprobe and multiple chips.
2066 The power-management is supported.
2068 Module snd-pdaudiocf
2069 --------------------
2071 Module for Sound Core PDAudioCF sound card.
2073 The power-management is supported.
2079 The ac97_quirk option is used to enable/override the workaround for
2080 specific devices on drivers for on-board AC'97 controllers like
2081 snd-intel8x0. Some hardware have swapped output pins between Master
2082 and Headphone, or Surround (thanks to confusion of AC'97
2083 specifications from version to version :-)
2085 The driver provides the auto-detection of known problematic devices,
2086 but some might be unknown or wrongly detected. In such a case, pass
2087 the proper value with this option.
2089 The following strings are accepted:
2090 - default Don't override the default setting
2091 - none Disable the quirk
2092 - hp_only Bind Master and Headphone controls as a single control
2093 - swap_hp Swap headphone and master controls
2094 - swap_surround Swap master and surround controls
2095 - ad_sharing For AD1985, turn on OMS bit and use headphone
2096 - alc_jack For ALC65x, turn on the jack sense mode
2097 - inv_eapd Inverted EAPD implementation
2098 - mute_led Bind EAPD bit for turning on/off mute LED
2100 For backward compatibility, the corresponding integer value -1, 0,
2101 ... are accepted, too.
2103 For example, if "Master" volume control has no effect on your device
2104 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2107 Configuring Non-ISAPNP Cards
2108 ============================
2110 When the kernel is configured with ISA-PnP support, the modules
2111 supporting the isapnp cards will have module options "isapnp".
2112 If this option is set, *only* the ISA-PnP devices will be probed.
2113 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2114 together with the proper i/o and irq configuration.
2116 When the kernel is configured without ISA-PnP support, isapnp option
2117 will be not built in.
2120 Module Autoloading Support
2121 ==========================
2123 The ALSA drivers can be loaded automatically on demand by defining
2124 module aliases. The string 'snd-card-%1' is requested for ALSA native
2125 devices where %i is sound card number from zero to seven.
2127 To auto-load an ALSA driver for OSS services, define the string
2128 'sound-slot-%i' where %i means the slot number for OSS, which
2129 corresponds to the card index of ALSA. Usually, define this
2130 as the same card module.
2132 An example configuration for a single emu10k1 card is like below:
2133 ----- /etc/modprobe.conf
2134 alias snd-card-0 snd-emu10k1
2135 alias sound-slot-0 snd-emu10k1
2136 ----- /etc/modprobe.conf
2138 The available number of auto-loaded sound cards depends on the module
2139 option "cards_limit" of snd module. As default it's set to 1.
2140 To enable the auto-loading of multiple cards, specify the number of
2141 sound cards in that option.
2143 When multiple cards are available, it'd better to specify the index
2144 number for each card via module option, too, so that the order of
2145 cards is kept consistent.
2147 An example configuration for two sound cards is like below:
2149 ----- /etc/modprobe.conf
2151 options snd cards_limit=2
2152 alias snd-card-0 snd-interwave
2153 alias snd-card-1 snd-ens1371
2154 options snd-interwave index=0
2155 options snd-ens1371 index=1
2157 alias sound-slot-0 snd-interwave
2158 alias sound-slot-1 snd-ens1371
2159 ----- /etc/modprobe.conf
2161 In this example, the interwave card is always loaded as the first card
2162 (index 0) and ens1371 as the second (index 1).
2164 Alternative (and new) way to fixate the slot assignment is to use
2165 "slots" option of snd module. In the case above, specify like the
2168 options snd slots=snd-interwave,snd-ens1371
2170 Then, the first slot (#0) is reserved for snd-interwave driver, and
2171 the second (#1) for snd-ens1371. You can omit index option in each
2172 driver if slots option is used (although you can still have them at
2173 the same time as long as they don't conflict).
2175 The slots option is especially useful for avoiding the possible
2176 hot-plugging and the resultant slot conflict. For example, in the
2177 case above again, the first two slots are already reserved. If any
2178 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2179 snd-ens1371, it will be assigned to the third or later slot.
2182 ALSA PCM devices to OSS devices mapping
2183 =======================================
2185 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2186 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2187 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2188 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2189 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2190 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2191 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2192 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2193 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2195 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2196 sound card number and second means device number. The ALSA devices
2197 have either 'c' or 'p' suffix indicating the direction, capture and
2198 playback, respectively.
2200 Please note that the device mapping above may be varied via the module
2201 options of snd-pcm-oss module.
2204 Proc interfaces (/proc/asound)
2205 ==============================
2207 /proc/asound/card#/pcm#[cp]/oss
2208 -------------------------------
2209 String "erase" - erase all additional informations about OSS applications
2210 String "<app_name> <fragments> <fragment_size> [<options>]"
2212 <app_name> - name of application with (higher priority) or without path
2213 <fragments> - number of fragments or zero if auto
2214 <fragment_size> - size of fragment in bytes or zero if auto
2215 <options> - optional parameters
2216 - disable the application tries to open a pcm device for
2217 this channel but does not want to use it.
2218 (Cause a bug or mmap needs)
2219 It's good for Quake etc...
2220 - direct don't use plugins
2221 - block force block mode (rvplayer)
2222 - non-block force non-block mode
2223 - whole-frag write only whole fragments (optimization affecting
2225 - no-silence do not fill silence ahead to avoid clicks
2226 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2227 instead of filled blocks
2229 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2230 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2231 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2234 Early Buffer Allocation
2235 =======================
2237 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2238 sometimes it's too late to find such spaces when the driver module is
2239 actually loaded due to memory fragmentation. You can pre-allocate the
2240 PCM buffers by loading snd-page-alloc module and write commands to its
2241 proc file in prior, for example, in the early boot stage like
2242 /etc/init.d/*.local scripts.
2244 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2245 usage of page allocation. In writing, you can send the following
2246 commands to the snd-page-alloc driver:
2248 - add VENDOR DEVICE MASK SIZE BUFFERS
2250 VENDOR and DEVICE are PCI vendor and device IDs. They take
2251 integer numbers (0x prefix is needed for the hex).
2252 MASK is the PCI DMA mask. Pass 0 if not restricted.
2253 SIZE is the size of each buffer to allocate. You can pass
2254 k and m suffix for KB and MB. The max number is 16MB.
2255 BUFFERS is the number of buffers to allocate. It must be greater
2256 than 0. The max number is 4.
2260 This will erase the all pre-allocated buffers which are not in
2267 ALSA project homepage
2268 http://www.alsa-project.org
2270 ALSA Bug Tracking System
2271 https://bugtrack.alsa-project.org/bugs/
2274 mailto:alsa-devel@alsa-project.org
projects / linux-beck.git / blob