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.
61 - permission mask for dynamic sound device filesystem
62 - This is available only when DEVFS is enabled
64 - E.g.: device_mode=0660
70 The PCM OSS emulation module.
71 This module takes options which change the mapping of devices.
73 dsp_map - PCM device number maps assigned to the 1st OSS device.
75 adsp_map - PCM device number maps assigned to the 2st OSS device.
78 - Don't block opening busy PCM devices. Default: 1
80 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
81 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
82 to PCM #0 of the card #0.
83 For changing the second or later card, specify the option with
84 commas, such like "dsp_map=0,1".
86 nonblock_open option is used to change the behavior of the PCM
87 regarding opening the device. When this option is non-zero,
88 opening a busy OSS PCM device won't be blocked but return
89 immediately with EAGAIN (just like O_NONBLOCK flag).
94 This module takes options which change the mapping of devices.
95 similar to those of the snd-pcm-oss module.
97 midi_map - MIDI device number maps assigned to the 1st OSS device.
99 amidi_map - MIDI device number maps assigned to the 2st OSS device.
102 Common parameters for top sound card modules
103 --------------------------------------------
105 Each of top level sound card module takes the following options.
107 index - index (slot #) of sound card
108 - Values: 0 through 31 or negative
109 - If nonnegative, assign that index number
110 - if negative, interpret as a bitmask of permissible
111 indices; the first free permitted index is assigned
113 id - card ID (identifier or name)
114 - Can be up to 15 characters long
115 - Default: the card type
116 - A directory by this name is created under /proc/asound/
117 containing information about the card
118 - This ID can be used instead of the index number in
121 - Default: enabled, for PCI and ISA PnP cards
126 Module for AdLib FM cards.
128 port - port # for OPL chip
130 This module supports multiple cards. It does not support autoprobe, so
131 the port must be specified. For actual AdLib FM cards it will be 0x388.
132 Note that this card does not have PCM support and no mixer; only FM
135 Make sure you have "sbiload" from the alsa-tools package available and,
136 after loading the module, find out the assigned ALSA sequencer port
137 number through "sbiload -l". Example output:
139 Port Client name Port name
140 64:0 OPL2 FM synth OPL2 FM Port
142 Load the std.sb and drums.sb patches also supplied by sbiload:
144 sbiload -p 64:0 std.sb drums.sb
146 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
147 instead. To have the card produce sound, use aplaymidi from alsa-utils:
149 aplaymidi -p 64:0 foo.mid
154 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
156 port - port # for AD1816A chip (PnP setup)
157 mpu_port - port # for MPU-401 UART (PnP setup)
158 fm_port - port # for OPL3 (PnP setup)
159 irq - IRQ # for AD1816A chip (PnP setup)
160 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
161 dma1 - first DMA # for AD1816A chip (PnP setup)
162 dma2 - second DMA # for AD1816A chip (PnP setup)
163 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
165 This module supports multiple cards, autoprobe and PnP.
170 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
172 port - port # for AD1848 chip
173 irq - IRQ # for AD1848 chip
174 dma1 - DMA # for AD1848 chip (0,1,3)
176 This module supports multiple cards. It does not support autoprobe
177 thus main port must be specified!!! Other ports are optional.
179 The power-management is supported.
184 Module for Analog Devices AD1889 chips.
186 ac97_quirk - AC'97 workaround for strange hardware
187 See the description of intel8x0 module for details.
189 This module supports multiple cards.
194 Module for ALi M5451 PCI chip.
196 pcm_channels - Number of hardware channels assigned for PCM
197 spdif - Support SPDIF I/O
200 This module supports one chip and autoprobe.
202 The power-management is supported.
207 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
209 port - port # for ALS100 (SB16) chip (PnP setup)
210 irq - IRQ # for ALS100 (SB16) chip (PnP setup)
211 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)
212 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)
213 mpu_port - port # for MPU-401 UART (PnP setup)
214 mpu_irq - IRQ # for MPU-401 (PnP setup)
215 fm_port - port # for OPL3 FM (PnP setup)
217 This module supports multiple cards, autoprobe and PnP.
219 The power-management is supported.
224 Module for Avance Logic ALS300 and ALS300+
226 This module supports multiple cards.
228 The power-management is supported.
233 Module for sound cards based on Avance Logic ALS4000 PCI chip.
235 joystick_port - port # for legacy joystick support.
236 0 = disabled (default), 1 = auto-detect
238 This module supports multiple cards, autoprobe and PnP.
240 The power-management is supported.
245 Module for ATI IXP 150/200/250/400 AC97 controllers.
247 ac97_clock - AC'97 clock (default = 48000)
248 ac97_quirk - AC'97 workaround for strange hardware
249 See "AC97 Quirk Option" section below.
250 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
252 This module supports one card and autoprobe.
254 ATI IXP has two different methods to control SPDIF output. One is
255 over AC-link and another is over the "direct" SPDIF output. The
256 implementation depends on the motherboard, and you'll need to
257 choose the correct one via spdif_aclink module option.
259 The power-management is supported.
261 Module snd-atiixp-modem
262 -----------------------
264 Module for ATI IXP 150/200/250 AC97 modem controllers.
266 This module supports one card and autoprobe.
268 Note: The default index value of this module is -2, i.e. the first
271 The power-management is supported.
273 Module snd-au8810, snd-au8820, snd-au8830
274 -----------------------------------------
276 Module for Aureal Vortex, Vortex2 and Advantage device.
278 pcifix - Control PCI workarounds
279 0 = Disable all workarounds
280 1 = Force the PCI latency of the Aureal card to 0xff
281 2 = Force the Extend PCI#2 Internal Master for Efficient
282 Handling of Dummy Requests on the VIA KT133 AGP Bridge
283 3 = Force both settings
284 255 = Autodetect what is required (default)
286 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
287 EQ, mpu401, gameport. A3D and wavetable support are still in development.
288 Development and reverse engineering work is being coordinated at
289 http://savannah.nongnu.org/projects/openvortex/
290 SPDIF output has a copy of the AC97 codec output, unless you use the
291 "spdif" pcm device, which allows raw data passthru.
292 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
295 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
296 control correctly. If you have problems regarding this, try
297 another ALSA compliant mixer (alsamixer works).
302 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
304 port - port # for AZT2320 chip (PnP setup)
305 wss_port - port # for WSS (PnP setup)
306 mpu_port - port # for MPU-401 UART (PnP setup)
307 fm_port - FM port # for AZT2320 chip (PnP setup)
308 irq - IRQ # for AZT2320 (WSS) chip (PnP setup)
309 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
310 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
311 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
313 This module supports multiple cards, PnP and autoprobe.
315 The power-management is supported.
320 Module for sound cards based on Aztech AZF3328 PCI chip.
322 joystick - Enable joystick (default off)
324 This module supports multiple cards.
329 Module for video cards based on Bt87x chips.
331 digital_rate - Override the default digital rate (Hz)
332 load_all - Load the driver even if the card model isn't known
334 This module supports multiple cards.
336 Note: The default index value of this module is -2, i.e. the first
342 Module for Creative Audigy LS and SB Live 24bit
344 This module supports multiple cards.
350 Module for sound cards based on C-Media CMI8330 ISA chips.
352 wssport - port # for CMI8330 chip (WSS)
353 wssirq - IRQ # for CMI8330 chip (WSS)
354 wssdma - first DMA # for CMI8330 chip (WSS)
355 sbport - port # for CMI8330 chip (SB16)
356 sbirq - IRQ # for CMI8330 chip (SB16)
357 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
358 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
360 This module supports multiple cards and autoprobe.
362 The power-management is supported.
367 Module for C-Media CMI8338 and 8738 PCI sound cards.
369 mpu_port - 0x300,0x310,0x320,0x330 = legacy port,
370 1 = integrated PCI port,
371 0 = disable (default)
372 fm_port - 0x388 (default), 0 = disable (default)
373 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
375 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
377 This module supports autoprobe and multiple cards.
379 The power-management is supported.
384 Module for sound cards based on CS4231 ISA chips.
386 port - port # for CS4231 chip
387 mpu_port - port # for MPU-401 UART (optional), -1 = disable
388 irq - IRQ # for CS4231 chip
389 mpu_irq - IRQ # for MPU-401 UART
390 dma1 - first DMA # for CS4231 chip
391 dma2 - second DMA # for CS4231 chip
393 This module supports multiple cards. This module does not support autoprobe
394 thus main port must be specified!!! Other ports are optional.
396 The power-management is supported.
401 Module for sound cards based on CS4232/CS4232A ISA chips.
403 port - port # for CS4232 chip (PnP setup - 0x534)
404 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
405 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
406 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
407 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
408 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
409 dma1 - first DMA # for CS4232 chip (0,1,3)
410 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
411 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
413 This module supports multiple cards. This module does not support autoprobe
414 thus main port must be specified!!! Other ports are optional.
416 The power-management is supported.
421 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
422 CS4238B/CS4239 ISA chips.
424 port - port # for CS4236 chip (PnP setup - 0x534)
425 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
426 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
427 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
428 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
429 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
430 dma1 - first DMA # for CS4236 chip (0,1,3)
431 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
432 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
434 This module supports multiple cards. This module does not support autoprobe
435 (if ISA PnP is not used) thus main port and control port must be
436 specified!!! Other ports are optional.
438 The power-management is supported.
443 Module for Cirrus Logic CS4281 soundchip.
445 dual_codec - Secondary codec ID (0 = disable, default)
447 This module supports multiple cards.
449 The power-management is supported.
454 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
455 CS4624/CS4630/CS4280 PCI chips.
457 external_amp - Force to enable external amplifier.
458 thinkpad - Force to enable Thinkpad's CLKRUN control.
459 mmap_valid - Support OSS mmap mode (default = 0).
461 This module supports multiple cards and autoprobe.
462 Usually external amp and CLKRUN controls are detected automatically
463 from PCI sub vendor/device ids. If they don't work, give the options
466 The power-management is supported.
468 Module snd-cs5535audio
469 ----------------------
471 Module for multifunction CS5535 companion PCI device
473 The power-management is supported.
478 Module for Echoaudio Darla20
480 This module supports multiple cards.
481 The driver requires the firmware loader support on kernel.
486 Module for Echoaudio Darla24
488 This module supports multiple cards.
489 The driver requires the firmware loader support on kernel.
494 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
497 port - Port # (PnP setup)
498 mpu_port - Port # for MPU-401 (PnP setup)
499 fm_port - Port # for FM OPL-3 (PnP setup)
500 irq - IRQ # (PnP setup)
501 mpu_irq - IRQ # for MPU-401 (PnP setup)
502 dma8 - DMA # (PnP setup)
504 This module supports multiple cards. This module is enabled only with
507 The power-management is supported.
512 Module for the dummy sound card. This "card" doesn't do any output
513 or input, but you may use this module for any application which
514 requires a sound card (like RealPlayer).
516 The power-management is supported.
521 Module for Echoaudio 3G cards (Gina3G/Layla3G)
523 This module supports multiple cards.
524 The driver requires the firmware loader support on kernel.
529 Module for EMU10K1/EMU10k2 based PCI sound cards.
530 * Sound Blaster Live!
531 * Sound Blaster PCI 512
532 * Emu APS (partially supported)
533 * Sound Blaster Audigy
535 extin - bitmap of available external inputs for FX8010 (see bellow)
536 extout - bitmap of available external outputs for FX8010 (see bellow)
537 seq_ports - allocated sequencer ports (4 by default)
538 max_synth_voices - limit of voices used for wavetable (64 by default)
539 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
540 given in MB unit. Default value is 128.
541 enable_ir - enable IR
543 This module supports multiple cards and autoprobe.
545 Input & Output configurations [extin/extout]
546 * Creative Card wo/Digital out [0x0003/0x1f03]
547 * Creative Card w/Digital out [0x0003/0x1f0f]
548 * Creative Card w/Digital CD in [0x000f/0x1f0f]
549 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
550 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
551 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
552 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
553 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
554 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
555 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
556 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
557 * Creative Card all ins and outs [0x3fff/0x7fff]
559 The power-management is supported.
564 Module for Creative Emu10k1X (SB Live Dell OEM version)
566 This module supports multiple cards.
571 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
572 * SoundBlaster PCI 64
573 * SoundBlaster PCI 128
575 joystick - Enable joystick (default off)
577 This module supports multiple cards and autoprobe.
579 The power-management is supported.
584 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
585 * SoundBlaster PCI 64
586 * SoundBlaster PCI 128
587 * SoundBlaster Vibra PCI
589 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
590 0 = disable (default), 1 = auto-detect
592 This module supports multiple cards and autoprobe.
594 The power-management is supported.
599 Module for sound cards based on ESS ES968 chip (PnP only).
601 port - port # for ES968 (SB8) chip (PnP setup)
602 irq - IRQ # for ES968 (SB8) chip (PnP setup)
603 dma1 - DMA # for ES968 (SB8) chip (PnP setup)
605 This module supports multiple cards, PnP and autoprobe.
607 The power-management is supported.
612 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
614 port - port # for ES-1688 chip (0x220,0x240,0x260)
615 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
616 irq - IRQ # for ES-1688 chip (5,7,9,10)
617 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
618 dma8 - DMA # for ES-1688 chip (0,1,3)
620 This module supports multiple cards and autoprobe (without MPU-401 port).
625 Module for ESS AudioDrive ES-18xx sound cards.
627 port - port # for ES-18xx chip (0x220,0x240,0x260)
628 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
629 fm_port - port # for FM (optional, not used)
630 irq - IRQ # for ES-18xx chip (5,7,9,10)
631 dma1 - first DMA # for ES-18xx chip (0,1,3)
632 dma2 - first DMA # for ES-18xx chip (0,1,3)
633 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
635 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
636 port if native ISA PnP routines are not used).
637 When dma2 is equal with dma1, the driver works as half-duplex.
639 The power-management is supported.
644 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
646 This module supports multiple cards and autoprobe.
648 The power-management is supported.
653 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
655 total_bufsize - total buffer size in kB (1-4096kB)
656 pcm_substreams_p - playback channels (1-8, default=2)
657 pcm_substreams_c - capture channels (1-8, default=0)
658 clock - clock (0 = auto-detection)
659 use_pm - support the power-management (0 = off, 1 = on,
661 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
662 joystick - enable joystick (default off)
664 This module supports multiple cards and autoprobe.
666 The power-management is supported.
671 Module for ForteMedia FM801 based PCI sound cards.
673 tea575x_tuner - Enable TEA575x tuner
674 - 1 = MediaForte 256-PCS
675 - 2 = MediaForte 256-PCPR
676 - 3 = MediaForte 64-PCR
677 - High 16-bits are video (radio) device number + 1
678 - example: 0x10002 (MediaForte 256-PCPR, device 1)
680 This module supports multiple cards and autoprobe.
682 The power-management is supported.
687 Module for Echoaudio Gina20
689 This module supports multiple cards.
690 The driver requires the firmware loader support on kernel.
695 Module for Echoaudio Gina24
697 This module supports multiple cards.
698 The driver requires the firmware loader support on kernel.
700 Module snd-gusclassic
701 ---------------------
703 Module for Gravis UltraSound Classic sound card.
705 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
706 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
707 dma1 - DMA # for GF1 chip (1,3,5,6,7)
708 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
709 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
710 voices - GF1 voices limit (14-32)
711 pcm_voices - reserved PCM voices
713 This module supports multiple cards and autoprobe.
715 Module snd-gusextreme
716 ---------------------
718 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
720 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
721 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
722 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
723 irq - IRQ # for ES-1688 chip (5,7,9,10)
724 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
725 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
726 dma8 - DMA # for ES-1688 chip (0,1,3)
727 dma1 - DMA # for GF1 chip (1,3,5,6,7)
728 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
729 voices - GF1 voices limit (14-32)
730 pcm_voices - reserved PCM voices
732 This module supports multiple cards and autoprobe (without MPU-401 port).
737 Module for Gravis UltraSound MAX sound card.
739 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
740 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
741 dma1 - DMA # for GF1 chip (1,3,5,6,7)
742 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
743 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
744 voices - GF1 voices limit (14-32)
745 pcm_voices - reserved PCM voices
747 This module supports multiple cards and autoprobe.
752 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),
753 ATI SB450, SB600, RS600,
757 model - force the model name
758 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
759 single_cmd - Use single immediate commands to communicate with
760 codecs (for debugging only)
762 This module supports one card and autoprobe.
764 Each codec may have a model table for different configurations.
765 If your machine isn't listed there, the default (usually minimal)
766 configuration is set up. You can pass "model=<name>" option to
767 specify a certain model in such a case. There are different
768 models depending on the codec chip.
770 Model name Description
771 ---------- -----------
773 3stack 3-jack in back and a headphone out
774 3stack-digout 3-jack in back, a HP out and a SPDIF out
775 5stack 5-jack in back, 2-jack in front
776 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
777 6stack 6-jack in back, 2-jack in front
778 6stack-digout 6-jack with a SPDIF out
780 z71v 3-jack (HP shared SPDIF)
784 lg LG laptop (m1 express dual)
786 test for testing/debugging purpose, almost all controls can be
787 adjusted. Appearing only when compiled with
789 auto auto-config reading BIOS (default)
793 fujitsu Fujitsu S7020
795 basic fixed pin assignment (old default model)
796 auto auto-config reading BIOS (default)
799 fujitsu Fujitsu Laptop
800 basic fixed pin assignment w/o SPDIF
801 auto auto-config reading BIOS (default)
804 3stack-dig 3-jack with SPDIF I/O
805 6stck-dig 6-jack digital with SPDIF I/O
806 auto auto-config reading BIOS (default)
810 3stack-dig 3-jack with SPDIF I/O
811 6stack-dig 6-jack with SPDIF I/O
812 auto auto-config reading BIOS (default)
815 minimal 3-jack in back
816 min_fp 3-jack in back, 2-jack in front
817 full 6-jack in back, 2-jack in front
818 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
819 allout 5-jack in back, 2-jack in front, SPDIF out
820 auto auto-config reading BIOS (default)
823 basic 3-jack (default)
825 thinkpad Lenovo Thinkpad T60/X60/Z60
828 6stack 6-jack, separate surrounds (default)
829 3stack 3-stack, shared surrounds
830 laptop 2-channel only (FSC V2060, Samsung M50)
831 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
835 6stack-dig ditto with SPDIF
837 3stack-dig ditto with SPDIF
838 laptop 3-jack with hp-jack automute
839 laptop-dig ditto with SPDIF
840 auto auto-confgi reading BIOS (default)
843 vaio Setup for VAIO FE550G/SZ110
845 If the default configuration doesn't work and one of the above
846 matches with your device, report it together with the PCI
847 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
848 ML (see the section "Links and Addresses").
850 Note 2: If you get click noises on output, try the module option
851 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
852 register value without FIFO size correction as the current
853 DMA pointer. position_fix=2 will make the driver to use
854 the position buffer instead of reading SD_LPIB register.
855 (Usually SD_LPLIB register is more accurate than the
858 NB: If you get many "azx_get_response timeout" messages at
859 loading, it's likely a problem of interrupts (e.g. ACPI irq
860 routing). Try to boot with options like "pci=noacpi". Also, you
861 can try "single_cmd=1" module option. This will switch the
862 communication method between HDA controller and codecs to the
863 single immediate commands instead of CORB/RIRB. Basically, the
864 single command mode is provided only for BIOS, and you won't get
865 unsolicited events, too. But, at least, this works independently
866 from the irq. Remember this is a last resort, and should be
867 avoided as much as possible...
869 The power-management is supported.
874 Module for RME Hammerfall DSP audio interface(s)
876 This module supports multiple cards.
878 Note: The firmware data can be automatically loaded via hotplug
879 when CONFIG_FW_LOADER is set. Otherwise, you need to load
880 the firmware via hdsploader utility included in alsa-tools
882 The firmware data is found in alsa-firmware package.
884 Note: snd-page-alloc module does the job which snd-hammerfall-mem
885 module did formerly. It will allocate the buffers in advance
886 when any HDSP cards are found. To make the buffer
887 allocation sure, load snd-page-alloc module in the early
888 stage of boot sequence. See "Early Buffer Allocation"
894 Module for RME HDSP MADI board.
896 precise_ptr - Enable precise pointer, or disable.
897 line_outs_monitor - Send playback streams to analog outs by default.
898 enable_monitor - Enable Analog Out on Channel 63/64 by default.
900 See hdspm.txt for details.
905 Module for Envy24 (ICE1712) based PCI sound cards.
906 * MidiMan M Audio Delta 1010
907 * MidiMan M Audio Delta 1010LT
908 * MidiMan M Audio Delta DiO 2496
909 * MidiMan M Audio Delta 66
910 * MidiMan M Audio Delta 44
911 * MidiMan M Audio Delta 410
912 * MidiMan M Audio Audiophile 2496
918 * Hoontech SoundTrack DSP 24
919 * Hoontech SoundTrack DSP 24 Value
920 * Hoontech SoundTrack DSP 24 Media 7.1
921 * Event Electronics, EZ8
923 * Lionstracs, Mediastaton
925 model - Use the given board model, one of the following:
926 delta1010, dio2496, delta66, delta44, audiophile, delta410,
927 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
928 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
929 phase88, mediastation
930 omni - Omni I/O support for MidiMan M-Audio Delta44/66
931 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever)
932 in msec resolution, default value is 500 (0.5 sec)
934 This module supports multiple cards and autoprobe. Note: The consumer part
935 is not used with all Envy24 based cards (for example in the MidiMan Delta
938 Note: The supported board is detected by reading EEPROM or PCI
939 SSID (if EEPROM isn't available). You can override the
940 model by passing "model" module option in case that the
941 driver isn't configured properly or you want to try another
947 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
948 * MidiMan M Audio Revolution 5.1
949 * MidiMan M Audio Revolution 7.1
951 * TerraTec Aureon 5.1 Sky
952 * TerraTec Aureon 7.1 Space
953 * TerraTec Aureon 7.1 Universe
956 * AudioTrak Prodigy 7.1
957 * AudioTrak Prodigy 7.1LT
958 * AudioTrak Prodigy 192
960 * Albatron K8X800 Pro II
967 model - Use the given board model, one of the following:
968 revo51, revo71, amp2000, prodigy71, prodigy71lt,
969 prodigy192, aureon51, aureon71, universe,
970 k8x800, phase22, phase28, ms300, av710
972 This module supports multiple cards and autoprobe.
974 Note: The supported board is detected by reading EEPROM or PCI
975 SSID (if EEPROM isn't available). You can override the
976 model by passing "model" module option in case that the
977 driver isn't configured properly or you want to try another
983 Module for Echoaudio Indigo
985 This module supports multiple cards.
986 The driver requires the firmware loader support on kernel.
991 Module for Echoaudio Indigo DJ
993 This module supports multiple cards.
994 The driver requires the firmware loader support on kernel.
999 Module for Echoaudio Indigo IO
1001 This module supports multiple cards.
1002 The driver requires the firmware loader support on kernel.
1007 Module for AC'97 motherboards from Intel and compatibles.
1008 * Intel i810/810E, i815, i820, i830, i84x, MX440
1009 ICH5, ICH6, ICH7, ESB2
1010 * SiS 7012 (SiS 735)
1011 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1013 * AMD AMD768, AMD8111
1016 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1017 ac97_quirk - AC'97 workaround for strange hardware
1018 See "AC97 Quirk Option" section below.
1019 buggy_irq - Enable workaround for buggy interrupts on some
1020 motherboards (default yes on nForce chips,
1022 buggy_semaphore - Enable workaround for hardwares with buggy
1023 semaphores (e.g. on some ASUS laptops)
1026 This module supports one chip and autoprobe.
1028 Note: the latest driver supports auto-detection of chip clock.
1029 if you still encounter too fast playback, specify the clock
1030 explicitly via the module option "ac97_clock=41194".
1032 Joystick/MIDI ports are not supported by this driver. If your
1033 motherboard has these devices, use the ns558 or snd-mpu401
1034 modules, respectively.
1036 The power-management is supported.
1038 Module snd-intel8x0m
1039 --------------------
1041 Module for Intel ICH (i8x0) chipset MC97 modems.
1042 * Intel i810/810E, i815, i820, i830, i84x, MX440
1044 * SiS 7013 (SiS 735)
1045 * NVidia NForce, NForce2, NForce2s, NForce3
1049 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1051 This module supports one card and autoprobe.
1053 Note: The default index value of this module is -2, i.e. the first
1056 The power-management is supported.
1058 Module snd-interwave
1059 --------------------
1061 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1062 and other sound cards based on AMD InterWave (tm) chip.
1064 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1065 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1066 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1067 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1068 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1069 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1070 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1071 effect - 1 = InterWave effects enable (default 0);
1074 This module supports multiple cards, autoprobe and ISA PnP.
1076 Module snd-interwave-stb
1077 ------------------------
1079 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1080 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1081 circuit for extended control of bass, treble and master volume.
1083 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1084 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1085 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1086 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1087 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1088 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1089 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1090 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1091 effect - 1 = InterWave effects enable (default 0);
1094 This module supports multiple cards, autoprobe and ISA PnP.
1099 Module for Korg 1212 IO PCI card
1101 This module supports multiple cards.
1106 Module for Echoaudio Layla20
1108 This module supports multiple cards.
1109 The driver requires the firmware loader support on kernel.
1114 Module for Echoaudio Layla24
1116 This module supports multiple cards.
1117 The driver requires the firmware loader support on kernel.
1122 Module for Allegro/Maestro3 chips
1124 external_amp - enable external amp (enabled by default)
1125 amp_gpio - GPIO pin number for external amp (0-15) or
1126 -1 for default pin (8 for allegro, 1 for
1129 This module supports autoprobe and multiple chips.
1131 Note: the binding of amplifier is dependent on hardware.
1132 If there is no sound even though all channels are unmuted, try to
1133 specify other gpio connection via amp_gpio option.
1134 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1137 The power-management is supported.
1142 Module for Echoaudio Mia
1144 This module supports multiple cards.
1145 The driver requires the firmware loader support on kernel.
1150 Module for Miro soundcards: miroSOUND PCM 1 pro,
1152 miroSOUND PCM 20 Radio.
1154 port - Port # (0x530,0x604,0xe80,0xf40)
1155 irq - IRQ # (5,7,9,10,11)
1156 dma1 - 1st dma # (0,1,3)
1157 dma2 - 2nd dma # (0,1)
1158 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1159 mpu_irq - MPU-401 irq # (5,7,9,10)
1160 fm_port - FM Port # (0x388)
1161 wss - enable WSS mode
1162 ide - enable onboard ide support
1167 Module for Digigram miXart8 sound cards.
1169 This module supports multiple cards.
1170 Note: One miXart8 board will be represented as 4 alsa cards.
1171 See MIXART.txt for details.
1173 When the driver is compiled as a module and the hotplug firmware
1174 is supported, the firmware data is loaded via hotplug automatically.
1175 Install the necessary firmware files in alsa-firmware package.
1176 When no hotplug fw loader is available, you need to load the
1177 firmware via mixartloader utility in alsa-tools package.
1182 Module for Echoaudio Mona
1184 This module supports multiple cards.
1185 The driver requires the firmware loader support on kernel.
1190 Module for MPU-401 UART devices.
1192 port - port number or -1 (disable)
1193 irq - IRQ number or -1 (disable)
1194 pnp - PnP detection - 0 = disable, 1 = enable (default)
1196 This module supports multiple devices and PnP.
1201 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1204 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1205 irq - IRQ # for MTPAV (7,5, default=7)
1206 hwports - number of supported hardware ports, default=8.
1208 Module supports only 1 card. This module has no enable option.
1213 Module for NeoMagic NM256AV/ZX chips
1215 playback_bufsize - max playback frame size in kB (4-128kB)
1216 capture_bufsize - max capture frame size in kB (4-128kB)
1217 force_ac97 - 0 or 1 (disabled by default)
1218 buffer_top - specify buffer top address
1219 use_cache - 0 or 1 (disabled by default)
1220 vaio_hack - alias buffer_top=0x25a800
1221 reset_workaround - enable AC97 RESET workaround for some laptops
1222 reset_workaround2 - enable extended AC97 RESET workaround for some
1225 This module supports one chip and autoprobe.
1227 The power-management is supported.
1229 Note: on some notebooks the buffer address cannot be detected
1230 automatically, or causes hang-up during initialization.
1231 In such a case, specify the buffer top address explicity via
1234 Sony F250: buffer_top=0x25a800
1235 Sony F270: buffer_top=0x272800
1236 The driver supports only ac97 codec. It's possible to force
1237 to initialize/use ac97 although it's not detected. In such a
1238 case, use force_ac97=1 option - but *NO* guarantee whether it
1241 Note: The NM256 chip can be linked internally with non-AC97
1242 codecs. This driver supports only the AC97 codec, and won't work
1243 with machines with other (most likely CS423x or OPL3SAx) chips,
1244 even though the device is detected in lspci. In such a case, try
1245 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1246 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1247 and proper hardware parameters in the case without ISA PnP.
1249 Note: some laptops need a workaround for AC97 RESET. For the
1250 known hardware like Dell Latitude LS and Sony PCG-F305, this
1251 workaround is enabled automatically. For other laptops with a
1252 hard freeze, you can try reset_workaround=1 option.
1254 Note: Dell Latitude CSx laptops have another problem regarding
1255 AC97 RESET. On these laptops, reset_workaround2 option is
1256 turned on as default. This option is worth to try if the
1257 previous reset_workaround option doesn't help.
1259 Note: This driver is really crappy. It's a porting from the
1260 OSS driver, which is a result of black-magic reverse engineering.
1261 The detection of codec will fail if the driver is loaded *after*
1262 X-server as described above. You might be able to force to load
1263 the module, but it may result in hang-up. Hence, make sure that
1264 you load this module *before* X if you encounter this kind of
1270 Module for Yamaha OPL3-SA2/SA3 sound cards.
1272 port - control port # for OPL3-SA chip (0x370)
1273 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1274 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1275 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1276 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1277 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1278 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1279 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1280 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1282 This module supports multiple cards and ISA PnP. It does not support
1283 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1285 The power-management is supported.
1287 Module snd-opti92x-ad1848
1288 -------------------------
1290 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1291 Module works with OAK Mozart cards as well.
1293 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1294 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1295 fm_port - port # for OPL3 device (0x388)
1296 irq - IRQ # for WSS chip (5,7,9,10,11)
1297 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1298 dma1 - first DMA # for WSS chip (0,1,3)
1300 This module supports only one card, autoprobe and PnP.
1302 Module snd-opti92x-cs4231
1303 -------------------------
1305 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1307 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1308 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1309 fm_port - port # for OPL3 device (0x388)
1310 irq - IRQ # for WSS chip (5,7,9,10,11)
1311 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1312 dma1 - first DMA # for WSS chip (0,1,3)
1313 dma2 - second DMA # for WSS chip (0,1,3)
1315 This module supports only one card, autoprobe and PnP.
1320 Module for sound cards based on OPTi 82c93x chips.
1322 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1323 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1324 fm_port - port # for OPL3 device (0x388)
1325 irq - IRQ # for WSS chip (5,7,9,10,11)
1326 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1327 dma1 - first DMA # for WSS chip (0,1,3)
1328 dma2 - second DMA # for WSS chip (0,1,3)
1330 This module supports only one card, autoprobe and PnP.
1335 Module for Digigram PCXHR boards
1337 This module supports multiple cards.
1339 Module snd-powermac (on ppc only)
1340 ---------------------------------
1342 Module for PowerMac, iMac and iBook on-board soundchips
1344 enable_beep - enable beep using PCM (enabled as default)
1346 Module supports autoprobe a chip.
1348 Note: the driver may have problems regarding endianess.
1350 The power-management is supported.
1352 Module snd-pxa2xx-ac97 (on arm only)
1353 ------------------------------------
1355 Module for AC97 driver for the Intel PXA2xx chip
1357 For ARM architecture only.
1359 The power-management is supported.
1364 Module for Conexant Riptide chip
1366 joystick_port - Joystick port # (default: 0x200)
1367 mpu_port - MPU401 port # (default: 0x330)
1368 opl3_port - OPL3 port # (default: 0x388)
1370 This module supports multiple cards.
1371 The driver requires the firmware loader support on kernel.
1372 You need to install the firmware file "riptide.hex" to the standard
1373 firmware path (e.g. /lib/firmware).
1378 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1379 Prodif96 and Prodif Gold) sound cards.
1381 This module supports multiple cards.
1386 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1388 This module supports multiple cards.
1393 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1395 precise_ptr - Enable precise pointer (doesn't work reliably).
1398 This module supports multiple cards.
1400 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1401 module did formerly. It will allocate the buffers in advance
1402 when any RME9652 cards are found. To make the buffer
1403 allocation sure, load snd-page-alloc module in the early
1404 stage of boot sequence. See "Early Buffer Allocation"
1407 Module snd-sa11xx-uda1341 (on arm only)
1408 ---------------------------------------
1410 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1412 Module supports only one card.
1413 Module has no enable and index options.
1415 The power-management is supported.
1420 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1424 port - port # for SB DSP chip (0x220,0x240,0x260)
1425 irq - IRQ # for SB DSP chip (5,7,9,10)
1426 dma8 - DMA # for SB DSP chip (1,3)
1428 This module supports multiple cards and autoprobe.
1430 The power-management is supported.
1432 Module snd-sb16 and snd-sbawe
1433 -----------------------------
1435 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1436 SoundBlaster AWE 32 (PnP),
1437 SoundBlaster AWE 64 PnP
1439 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1440 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1441 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1442 (snd-sbawe module only)
1443 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1444 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1445 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1446 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1447 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1448 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1450 This module supports multiple cards, autoprobe and ISA PnP.
1452 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1453 disable 16bit DMA with dma16 = -1 module parameter.
1454 Also, all Sound Blaster 16 type cards can operate in 16-bit
1455 half duplex mode through 8-bit DMA channel by disabling their
1458 The power-management is supported.
1463 Module for Aztech Sound Galaxy sound card.
1465 sbport - Port # for SB16 interface (0x220,0x240)
1466 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1467 irq - IRQ # (7,9,10,11)
1470 This module supports multiple cards.
1472 The power-management is supported.
1477 Module for ENSONIQ SoundScape PnP cards.
1479 port - Port # (PnP setup)
1480 irq - IRQ # (PnP setup)
1481 mpu_irq - MPU-401 IRQ # (PnP setup)
1482 dma - DMA # (PnP setup)
1484 This module supports multiple cards. ISA PnP must be enabled.
1485 You need sscape_ctl tool in alsa-tools package for loading
1488 Module snd-sun-amd7930 (on sparc only)
1489 --------------------------------------
1491 Module for AMD7930 sound chips found on Sparcs.
1493 This module supports multiple cards.
1495 Module snd-sun-cs4231 (on sparc only)
1496 -------------------------------------
1498 Module for CS4231 sound chips found on Sparcs.
1500 This module supports multiple cards.
1502 Module snd-sun-dbri (on sparc only)
1503 -----------------------------------
1505 Module for DBRI sound chips found on Sparcs.
1507 This module supports multiple cards.
1509 Module snd-wavefront
1510 --------------------
1512 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1514 cs4232_pcm_port - Port # for CS4232 PCM interface.
1515 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1516 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1517 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1518 use_cs4232_midi - Use CS4232 MPU-401 interface
1519 (inaccessibly located inside your computer)
1520 ics2115_port - Port # for ICS2115
1521 ics2115_irq - IRQ # for ICS2115
1522 fm_port - FM OPL-3 Port #
1523 dma1 - DMA1 # for CS4232 PCM interface.
1524 dma2 - DMA2 # for CS4232 PCM interface.
1525 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1527 This module supports multiple cards and ISA PnP.
1529 Module snd-sonicvibes
1530 ---------------------
1532 Module for S3 SonicVibes PCI sound cards.
1533 * PINE Schubert 32 PCI
1535 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1536 - SoundCard must have onboard SRAM for this.
1537 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1539 This module supports multiple cards and autoprobe.
1541 Module snd-serial-u16550
1542 ------------------------
1544 Module for UART16550A serial MIDI ports.
1546 port - port # for UART16550A chip
1547 irq - IRQ # for UART16550A chip, -1 = poll mode
1548 speed - speed in bauds (9600,19200,38400,57600,115200)
1550 base - base for divisor in bauds (57600,115200,230400,460800)
1552 outs - number of MIDI ports in a serial port (1-4)
1554 adaptor - Type of adaptor.
1555 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1556 3 = MS-124W M/B, 4 = Generic
1558 This module supports multiple cards. This module does not support autoprobe
1559 thus the main port must be specified!!! Other options are optional.
1564 Module for Trident 4DWave DX/NX sound cards.
1565 * Best Union Miss Melody 4DWave PCI
1567 * Warpspeed ONSpeed 4DWave PCI
1570 * CHIC True Sound 4Dwave
1571 * Shark Predator4D-PCI
1572 * Jaton SonicWave 4D
1574 pcm_channels - max channels (voices) reserved for PCM
1575 wavetable_size - max wavetable size in kB (4-?kb)
1577 This module supports multiple cards and autoprobe.
1579 The power-management is supported.
1581 Module snd-usb-audio
1582 --------------------
1584 Module for USB audio and USB MIDI devices.
1586 vid - Vendor ID for the device (optional)
1587 pid - Product ID for the device (optional)
1588 device_setup - Device specific magic number (optional)
1589 - Influence depends on the device
1592 This module supports multiple devices, autoprobe and hotplugging.
1594 Module snd-usb-usx2y
1595 --------------------
1597 Module for Tascam USB US-122, US-224 and US-428 devices.
1599 This module supports multiple devices, autoprobe and hotplugging.
1601 Note: you need to load the firmware via usx2yloader utility included
1602 in alsa-tools and alsa-firmware packages.
1607 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1608 8233A, 8233C, 8235, 8237 (south) bridge.
1610 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1612 joystick - Enable joystick (default off) [VIA686A/686B only]
1613 ac97_clock - AC'97 codec clock base (default 48000Hz)
1614 dxs_support - support DXS channels,
1615 0 = auto (default), 1 = enable, 2 = disable,
1616 3 = 48k only, 4 = no VRA, 5 = enable any sample
1617 rate and different sample rates on different
1619 [VIA8233/C, 8235, 8237 only]
1620 ac97_quirk - AC'97 workaround for strange hardware
1621 See "AC97 Quirk Option" section below.
1623 This module supports one chip and autoprobe.
1625 Note: on some SMP motherboards like MSI 694D the interrupts might
1626 not be generated properly. In such a case, please try to
1627 set the SMP (or MPS) version on BIOS to 1.1 instead of
1628 default value 1.4. Then the interrupt number will be
1629 assigned under 15. You might also upgrade your BIOS.
1631 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1632 channels as the first PCM. On these channels, up to 4
1633 streams can be played at the same time, and the controller
1634 can perform sample rate conversion with separate rates for
1636 As default (dxs_support = 0), 48k fixed rate is chosen
1637 except for the known devices since the output is often
1638 noisy except for 48k on some mother boards due to the
1640 Please try once dxs_support=5 and if it works on other
1641 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1642 know the PCI subsystem vendor/device id's (output of
1644 If dxs_support=5 does not work, try dxs_support=4; if it
1645 doesn't work too, try dxs_support=1. (dxs_support=1 is
1646 usually for old motherboards. The correct implemented
1647 board should work with 4 or 5.) If it still doesn't
1648 work and the default setting is ok, dxs_support=3 is the
1649 right choice. If the default setting doesn't work at all,
1650 try dxs_support=2 to disable the DXS channels.
1651 In any cases, please let us know the result and the
1652 subsystem vendor/device ids. See "Links and Addresses"
1655 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1656 additionally. The mpu_port option is for VIA686 chips only.
1658 The power-management is supported.
1660 Module snd-via82xx-modem
1661 ------------------------
1663 Module for VIA82xx AC97 modem
1665 ac97_clock - AC'97 codec clock base (default 48000Hz)
1667 This module supports one card and autoprobe.
1669 Note: The default index value of this module is -2, i.e. the first
1672 The power-management is supported.
1677 Module for virtual rawmidi devices.
1678 This module creates virtual rawmidi devices which communicate
1679 to the corresponding ALSA sequencer ports.
1681 midi_devs - MIDI devices # (1-4, default=4)
1683 This module supports multiple cards.
1688 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1690 mic - Enable Microphone on V222 Mic (NYI)
1691 ibl - Capture IBL size. (default = 0, minimum size)
1693 This module supports multiple cards.
1695 When the driver is compiled as a module and the hotplug firmware
1696 is supported, the firmware data is loaded via hotplug automatically.
1697 Install the necessary firmware files in alsa-firmware package.
1698 When no hotplug fw loader is available, you need to load the
1699 firmware via vxloader utility in alsa-tools package. To invoke
1700 vxloader automatically, add the following to /etc/modprobe.conf
1702 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1704 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1705 /etc/modules.conf, instead.)
1706 IBL size defines the interrupts period for PCM. The smaller size
1707 gives smaller latency but leads to more CPU consumption, too.
1708 The size is usually aligned to 126. As default (=0), the smallest
1709 size is chosen. The possible IBL values can be found in
1710 /proc/asound/cardX/vx-status proc file.
1712 The power-management is supported.
1717 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
1719 ibl - Capture IBL size. (default = 0, minimum size)
1721 This module supports multiple cards. The module is compiled only when
1722 PCMCIA is supported on kernel.
1724 With the older 2.6.x kernel, to activate the driver via the card
1725 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
1726 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
1727 longer require a config file.
1729 When the driver is compiled as a module and the hotplug firmware
1730 is supported, the firmware data is loaded via hotplug automatically.
1731 Install the necessary firmware files in alsa-firmware package.
1732 When no hotplug fw loader is available, you need to load the
1733 firmware via vxloader utility in alsa-tools package.
1735 About capture IBL, see the description of snd-vx222 module.
1737 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
1740 The power-management is supported.
1745 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
1747 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
1748 1 (auto-detect for YMF744/754 only)
1749 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
1750 1 (auto-detect for YMF744/754 only)
1751 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
1753 rear_switch - enable shared rear/line-in switch (bool)
1755 This module supports autoprobe and multiple chips.
1757 The power-management is supported.
1759 Module snd-pdaudiocf
1760 --------------------
1762 Module for Sound Core PDAudioCF sound card.
1764 The power-management is supported.
1770 The ac97_quirk option is used to enable/override the workaround for
1771 specific devices on drivers for on-board AC'97 controllers like
1772 snd-intel8x0. Some hardware have swapped output pins between Master
1773 and Headphone, or Surround (thanks to confusion of AC'97
1774 specifications from version to version :-)
1776 The driver provides the auto-detection of known problematic devices,
1777 but some might be unknown or wrongly detected. In such a case, pass
1778 the proper value with this option.
1780 The following strings are accepted:
1781 - default Don't override the default setting
1782 - none Disable the quirk
1783 - hp_only Bind Master and Headphone controls as a single control
1784 - swap_hp Swap headphone and master controls
1785 - swap_surround Swap master and surround controls
1786 - ad_sharing For AD1985, turn on OMS bit and use headphone
1787 - alc_jack For ALC65x, turn on the jack sense mode
1788 - inv_eapd Inverted EAPD implementation
1789 - mute_led Bind EAPD bit for turning on/off mute LED
1791 For backward compatibility, the corresponding integer value -1, 0,
1792 ... are accepted, too.
1794 For example, if "Master" volume control has no effect on your device
1795 but only "Headphone" does, pass ac97_quirk=hp_only module option.
1798 Configuring Non-ISAPNP Cards
1799 ============================
1801 When the kernel is configured with ISA-PnP support, the modules
1802 supporting the isapnp cards will have module options "isapnp".
1803 If this option is set, *only* the ISA-PnP devices will be probed.
1804 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
1805 together with the proper i/o and irq configuration.
1807 When the kernel is configured without ISA-PnP support, isapnp option
1808 will be not built in.
1811 Module Autoloading Support
1812 ==========================
1814 The ALSA drivers can be loaded automatically on demand by defining
1815 module aliases. The string 'snd-card-%1' is requested for ALSA native
1816 devices where %i is sound card number from zero to seven.
1818 To auto-load an ALSA driver for OSS services, define the string
1819 'sound-slot-%i' where %i means the slot number for OSS, which
1820 corresponds to the card index of ALSA. Usually, define this
1821 as the same card module.
1823 An example configuration for a single emu10k1 card is like below:
1824 ----- /etc/modprobe.conf
1825 alias snd-card-0 snd-emu10k1
1826 alias sound-slot-0 snd-emu10k1
1827 ----- /etc/modprobe.conf
1829 The available number of auto-loaded sound cards depends on the module
1830 option "cards_limit" of snd module. As default it's set to 1.
1831 To enable the auto-loading of multiple cards, specify the number of
1832 sound cards in that option.
1834 When multiple cards are available, it'd better to specify the index
1835 number for each card via module option, too, so that the order of
1836 cards is kept consistent.
1838 An example configuration for two sound cards is like below:
1840 ----- /etc/modprobe.conf
1842 options snd cards_limit=2
1843 alias snd-card-0 snd-interwave
1844 alias snd-card-1 snd-ens1371
1845 options snd-interwave index=0
1846 options snd-ens1371 index=1
1848 alias sound-slot-0 snd-interwave
1849 alias sound-slot-1 snd-ens1371
1850 ----- /etc/moprobe.conf
1852 In this example, the interwave card is always loaded as the first card
1853 (index 0) and ens1371 as the second (index 1).
1856 ALSA PCM devices to OSS devices mapping
1857 =======================================
1859 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
1860 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
1861 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
1862 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
1863 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
1864 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
1865 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
1866 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
1867 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
1869 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
1870 sound card number and second means device number. The ALSA devices
1871 have either 'c' or 'p' suffix indicating the direction, capture and
1872 playback, respectively.
1874 Please note that the device mapping above may be varied via the module
1875 options of snd-pcm-oss module.
1881 The ALSA driver fully supports the devfs extension.
1882 You should add lines below to your devfsd.conf file:
1884 LOOKUP snd MODLOAD ACTION snd
1885 REGISTER ^sound/.* PERMISSIONS root.audio 660
1886 REGISTER ^snd/.* PERMISSIONS root.audio 660
1888 Warning: These lines assume that you have the audio group in your system.
1889 Otherwise replace audio word with another group name (root for
1893 Proc interfaces (/proc/asound)
1894 ==============================
1896 /proc/asound/card#/pcm#[cp]/oss
1897 -------------------------------
1898 String "erase" - erase all additional informations about OSS applications
1899 String "<app_name> <fragments> <fragment_size> [<options>]"
1901 <app_name> - name of application with (higher priority) or without path
1902 <fragments> - number of fragments or zero if auto
1903 <fragment_size> - size of fragment in bytes or zero if auto
1904 <options> - optional parameters
1905 - disable the application tries to open a pcm device for
1906 this channel but does not want to use it.
1907 (Cause a bug or mmap needs)
1908 It's good for Quake etc...
1909 - direct don't use plugins
1910 - block force block mode (rvplayer)
1911 - non-block force non-block mode
1912 - whole-frag write only whole fragments (optimization affecting
1914 - no-silence do not fill silence ahead to avoid clicks
1915 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
1916 instead of filled blocks
1918 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
1919 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
1920 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
1923 Early Buffer Allocation
1924 =======================
1926 Some drivers (e.g. hdsp) require the large contiguous buffers, and
1927 sometimes it's too late to find such spaces when the driver module is
1928 actually loaded due to memory fragmentation. You can pre-allocate the
1929 PCM buffers by loading snd-page-alloc module and write commands to its
1930 proc file in prior, for example, in the early boot stage like
1931 /etc/init.d/*.local scripts.
1933 Reading the proc file /proc/drivers/snd-page-alloc shows the current
1934 usage of page allocation. In writing, you can send the following
1935 commands to the snd-page-alloc driver:
1937 - add VENDOR DEVICE MASK SIZE BUFFERS
1939 VENDOR and DEVICE are PCI vendor and device IDs. They take
1940 integer numbers (0x prefix is needed for the hex).
1941 MASK is the PCI DMA mask. Pass 0 if not restricted.
1942 SIZE is the size of each buffer to allocate. You can pass
1943 k and m suffix for KB and MB. The max number is 16MB.
1944 BUFFERS is the number of buffers to allocate. It must be greater
1945 than 0. The max number is 4.
1949 This will erase the all pre-allocated buffers which are not in
1956 ALSA project homepage
1957 http://www.alsa-project.org
1959 ALSA Bug Tracking System
1960 https://bugtrack.alsa-project.org/bugs/
1963 mailto:alsa-devel@lists.sourceforge.net