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, 0 = disable (default)
370 fm_port - 0x388 (default), 0 = disable (default)
371 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
373 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
375 This module supports autoprobe and multiple cards.
377 The power-management is supported.
382 Module for sound cards based on CS4231 ISA chips.
384 port - port # for CS4231 chip
385 mpu_port - port # for MPU-401 UART (optional), -1 = disable
386 irq - IRQ # for CS4231 chip
387 mpu_irq - IRQ # for MPU-401 UART
388 dma1 - first DMA # for CS4231 chip
389 dma2 - second DMA # for CS4231 chip
391 This module supports multiple cards. This module does not support autoprobe
392 thus main port must be specified!!! Other ports are optional.
394 The power-management is supported.
399 Module for sound cards based on CS4232/CS4232A ISA chips.
401 port - port # for CS4232 chip (PnP setup - 0x534)
402 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
403 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
404 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
405 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
406 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
407 dma1 - first DMA # for CS4232 chip (0,1,3)
408 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
409 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
411 This module supports multiple cards. This module does not support autoprobe
412 thus main port must be specified!!! Other ports are optional.
414 The power-management is supported.
419 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
420 CS4238B/CS4239 ISA chips.
422 port - port # for CS4236 chip (PnP setup - 0x534)
423 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
424 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
425 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
426 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
427 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
428 dma1 - first DMA # for CS4236 chip (0,1,3)
429 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
430 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
432 This module supports multiple cards. This module does not support autoprobe
433 (if ISA PnP is not used) thus main port and control port must be
434 specified!!! Other ports are optional.
436 The power-management is supported.
441 Module for Cirrus Logic CS4281 soundchip.
443 dual_codec - Secondary codec ID (0 = disable, default)
445 This module supports multiple cards.
447 The power-management is supported.
452 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
453 CS4624/CS4630/CS4280 PCI chips.
455 external_amp - Force to enable external amplifier.
456 thinkpad - Force to enable Thinkpad's CLKRUN control.
457 mmap_valid - Support OSS mmap mode (default = 0).
459 This module supports multiple cards and autoprobe.
460 Usually external amp and CLKRUN controls are detected automatically
461 from PCI sub vendor/device ids. If they don't work, give the options
464 The power-management is supported.
466 Module snd-cs5535audio
467 ----------------------
469 Module for multifunction CS5535 companion PCI device
471 This module supports multiple cards.
476 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
479 port - Port # (PnP setup)
480 mpu_port - Port # for MPU-401 (PnP setup)
481 fm_port - Port # for FM OPL-3 (PnP setup)
482 irq - IRQ # (PnP setup)
483 mpu_irq - IRQ # for MPU-401 (PnP setup)
484 dma8 - DMA # (PnP setup)
486 This module supports multiple cards. This module is enabled only with
489 The power-management is supported.
494 Module for the dummy sound card. This "card" doesn't do any output
495 or input, but you may use this module for any application which
496 requires a sound card (like RealPlayer).
498 The power-management is supported.
503 Module for EMU10K1/EMU10k2 based PCI sound cards.
504 * Sound Blaster Live!
505 * Sound Blaster PCI 512
506 * Emu APS (partially supported)
507 * Sound Blaster Audigy
509 extin - bitmap of available external inputs for FX8010 (see bellow)
510 extout - bitmap of available external outputs for FX8010 (see bellow)
511 seq_ports - allocated sequencer ports (4 by default)
512 max_synth_voices - limit of voices used for wavetable (64 by default)
513 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
514 given in MB unit. Default value is 128.
515 enable_ir - enable IR
517 This module supports multiple cards and autoprobe.
519 Input & Output configurations [extin/extout]
520 * Creative Card wo/Digital out [0x0003/0x1f03]
521 * Creative Card w/Digital out [0x0003/0x1f0f]
522 * Creative Card w/Digital CD in [0x000f/0x1f0f]
523 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
524 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
525 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
526 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
527 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
528 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
529 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
530 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
531 * Creative Card all ins and outs [0x3fff/0x7fff]
533 The power-management is supported.
538 Module for Creative Emu10k1X (SB Live Dell OEM version)
540 This module supports multiple cards.
545 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
546 * SoundBlaster PCI 64
547 * SoundBlaster PCI 128
549 joystick - Enable joystick (default off)
551 This module supports multiple cards and autoprobe.
553 The power-management is supported.
558 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
559 * SoundBlaster PCI 64
560 * SoundBlaster PCI 128
561 * SoundBlaster Vibra PCI
563 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
564 0 = disable (default), 1 = auto-detect
566 This module supports multiple cards and autoprobe.
568 The power-management is supported.
573 Module for sound cards based on ESS ES968 chip (PnP only).
575 port - port # for ES968 (SB8) chip (PnP setup)
576 irq - IRQ # for ES968 (SB8) chip (PnP setup)
577 dma1 - DMA # for ES968 (SB8) chip (PnP setup)
579 This module supports multiple cards, PnP and autoprobe.
581 The power-management is supported.
586 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
588 port - port # for ES-1688 chip (0x220,0x240,0x260)
589 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
590 irq - IRQ # for ES-1688 chip (5,7,9,10)
591 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
592 dma8 - DMA # for ES-1688 chip (0,1,3)
594 This module supports multiple cards and autoprobe (without MPU-401 port).
599 Module for ESS AudioDrive ES-18xx sound cards.
601 port - port # for ES-18xx chip (0x220,0x240,0x260)
602 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
603 fm_port - port # for FM (optional, not used)
604 irq - IRQ # for ES-18xx chip (5,7,9,10)
605 dma1 - first DMA # for ES-18xx chip (0,1,3)
606 dma2 - first DMA # for ES-18xx chip (0,1,3)
607 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
609 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
610 port if native ISA PnP routines are not used).
611 When dma2 is equal with dma1, the driver works as half-duplex.
613 The power-management is supported.
618 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
620 This module supports multiple cards and autoprobe.
622 The power-management is supported.
627 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
629 total_bufsize - total buffer size in kB (1-4096kB)
630 pcm_substreams_p - playback channels (1-8, default=2)
631 pcm_substreams_c - capture channels (1-8, default=0)
632 clock - clock (0 = auto-detection)
633 use_pm - support the power-management (0 = off, 1 = on,
635 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
636 joystick - enable joystick (default off)
638 This module supports multiple cards and autoprobe.
640 The power-management is supported.
645 Module for ForteMedia FM801 based PCI sound cards.
647 tea575x_tuner - Enable TEA575x tuner
648 - 1 = MediaForte 256-PCS
649 - 2 = MediaForte 256-PCPR
650 - 3 = MediaForte 64-PCR
651 - High 16-bits are video (radio) device number + 1
652 - example: 0x10002 (MediaForte 256-PCPR, device 1)
654 This module supports multiple cards and autoprobe.
656 The power-management is supported.
658 Module snd-gusclassic
659 ---------------------
661 Module for Gravis UltraSound Classic sound card.
663 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
664 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
665 dma1 - DMA # for GF1 chip (1,3,5,6,7)
666 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
667 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
668 voices - GF1 voices limit (14-32)
669 pcm_voices - reserved PCM voices
671 This module supports multiple cards and autoprobe.
673 Module snd-gusextreme
674 ---------------------
676 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
678 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
679 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
680 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
681 irq - IRQ # for ES-1688 chip (5,7,9,10)
682 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
683 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
684 dma8 - DMA # for ES-1688 chip (0,1,3)
685 dma1 - DMA # for GF1 chip (1,3,5,6,7)
686 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
687 voices - GF1 voices limit (14-32)
688 pcm_voices - reserved PCM voices
690 This module supports multiple cards and autoprobe (without MPU-401 port).
695 Module for Gravis UltraSound MAX sound card.
697 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
698 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
699 dma1 - DMA # for GF1 chip (1,3,5,6,7)
700 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
701 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
702 voices - GF1 voices limit (14-32)
703 pcm_voices - reserved PCM voices
705 This module supports multiple cards and autoprobe.
710 Module for Intel HD Audio (ICH6, ICH6M, ICH7), ATI SB450,
713 model - force the model name
714 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
715 single_cmd - Use single immediate commands to communicate with
716 codecs (for debugging only)
718 This module supports one card and autoprobe.
720 Each codec may have a model table for different configurations.
721 If your machine isn't listed there, the default (usually minimal)
722 configuration is set up. You can pass "model=<name>" option to
723 specify a certain model in such a case. There are different
724 models depending on the codec chip.
726 Model name Description
727 ---------- -----------
729 3stack 3-jack in back and a headphone out
730 3stack-digout 3-jack in back, a HP out and a SPDIF out
731 5stack 5-jack in back, 2-jack in front
732 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
733 6stack 6-jack in back, 2-jack in front
734 6stack-digout 6-jack with a SPDIF out
736 z71v 3-jack (HP shared SPDIF)
740 lg LG laptop (m1 express dual)
742 test for testing/debugging purpose, almost all controls can be
743 adjusted. Appearing only when compiled with
745 auto auto-config reading BIOS (default)
749 fujitsu Fujitsu S7020
751 basic fixed pin assignment (old default model)
752 auto auto-config reading BIOS (default)
755 fujitsu Fujitsu Laptop
756 basic fixed pin assignment w/o SPDIF
757 auto auto-config reading BIOS (default)
760 3stack-dig 3-jack with SPDIF I/O
761 6stck-dig 6-jack digital with SPDIF I/O
762 auto auto-config reading BIOS (default)
766 3stack-dig 3-jack with SPDIF I/O
767 6stack-dig 6-jack with SPDIF I/O
768 auto auto-config reading BIOS (default)
771 minimal 3-jack in back
772 min_fp 3-jack in back, 2-jack in front
773 full 6-jack in back, 2-jack in front
774 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
775 allout 5-jack in back, 2-jack in front, SPDIF out
776 auto auto-config reading BIOS (default)
779 basic 3-jack (default)
781 thinkpad Lenovo Thinkpad T60/X60/Z60
784 6stack 6-jack, separate surrounds (default)
785 3stack 3-stack, shared surrounds
786 laptop 2-channel only (FSC V2060, Samsung M50)
787 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
791 6stack-dig ditto with SPDIF
793 3stack-dig ditto with SPDIF
794 laptop 3-jack with hp-jack automute
795 laptop-dig ditto with SPDIF
796 auto auto-confgi reading BIOS (default)
799 vaio Setup for VAIO FE550G/SZ110
801 If the default configuration doesn't work and one of the above
802 matches with your device, report it together with the PCI
803 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
804 ML (see the section "Links and Addresses").
806 Note 2: If you get click noises on output, try the module option
807 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
808 register value without FIFO size correction as the current
809 DMA pointer. position_fix=2 will make the driver to use
810 the position buffer instead of reading SD_LPIB register.
811 (Usually SD_LPLIB register is more accurate than the
814 NB: If you get many "azx_get_response timeout" messages at
815 loading, it's likely a problem of interrupts (e.g. ACPI irq
816 routing). Try to boot with options like "pci=noacpi". Also, you
817 can try "single_cmd=1" module option. This will switch the
818 communication method between HDA controller and codecs to the
819 single immediate commands instead of CORB/RIRB. Basically, the
820 single command mode is provided only for BIOS, and you won't get
821 unsolicited events, too. But, at least, this works independently
822 from the irq. Remember this is a last resort, and should be
823 avoided as much as possible...
825 The power-management is supported.
830 Module for RME Hammerfall DSP audio interface(s)
832 This module supports multiple cards.
834 Note: The firmware data can be automatically loaded via hotplug
835 when CONFIG_FW_LOADER is set. Otherwise, you need to load
836 the firmware via hdsploader utility included in alsa-tools
838 The firmware data is found in alsa-firmware package.
840 Note: snd-page-alloc module does the job which snd-hammerfall-mem
841 module did formerly. It will allocate the buffers in advance
842 when any HDSP cards are found. To make the buffer
843 allocation sure, load snd-page-alloc module in the early
844 stage of boot sequence. See "Early Buffer Allocation"
850 Module for RME HDSP MADI board.
852 precise_ptr - Enable precise pointer, or disable.
853 line_outs_monitor - Send playback streams to analog outs by default.
854 enable_monitor - Enable Analog Out on Channel 63/64 by default.
856 See hdspm.txt for details.
861 Module for Envy24 (ICE1712) based PCI sound cards.
862 * MidiMan M Audio Delta 1010
863 * MidiMan M Audio Delta 1010LT
864 * MidiMan M Audio Delta DiO 2496
865 * MidiMan M Audio Delta 66
866 * MidiMan M Audio Delta 44
867 * MidiMan M Audio Delta 410
868 * MidiMan M Audio Audiophile 2496
874 * Hoontech SoundTrack DSP 24
875 * Hoontech SoundTrack DSP 24 Value
876 * Hoontech SoundTrack DSP 24 Media 7.1
877 * Event Electronics, EZ8
879 * Lionstracs, Mediastaton
881 model - Use the given board model, one of the following:
882 delta1010, dio2496, delta66, delta44, audiophile, delta410,
883 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
884 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
885 phase88, mediastation
886 omni - Omni I/O support for MidiMan M-Audio Delta44/66
887 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever)
888 in msec resolution, default value is 500 (0.5 sec)
890 This module supports multiple cards and autoprobe. Note: The consumer part
891 is not used with all Envy24 based cards (for example in the MidiMan Delta
894 Note: The supported board is detected by reading EEPROM or PCI
895 SSID (if EEPROM isn't available). You can override the
896 model by passing "model" module option in case that the
897 driver isn't configured properly or you want to try another
903 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
904 * MidiMan M Audio Revolution 5.1
905 * MidiMan M Audio Revolution 7.1
907 * TerraTec Aureon 5.1 Sky
908 * TerraTec Aureon 7.1 Space
909 * TerraTec Aureon 7.1 Universe
912 * AudioTrak Prodigy 7.1
913 * AudioTrak Prodigy 7.1LT
914 * AudioTrak Prodigy 192
916 * Albatron K8X800 Pro II
923 model - Use the given board model, one of the following:
924 revo51, revo71, amp2000, prodigy71, prodigy71lt,
925 prodigy192, aureon51, aureon71, universe,
926 k8x800, phase22, phase28, ms300, av710
928 This module supports multiple cards and autoprobe.
930 Note: The supported board is detected by reading EEPROM or PCI
931 SSID (if EEPROM isn't available). You can override the
932 model by passing "model" module option in case that the
933 driver isn't configured properly or you want to try another
939 Module for AC'97 motherboards from Intel and compatibles.
940 * Intel i810/810E, i815, i820, i830, i84x, MX440
941 ICH5, ICH6, ICH7, ESB2
943 * NVidia NForce, NForce2, NForce3, MCP04, CK804
945 * AMD AMD768, AMD8111
948 ac97_clock - AC'97 codec clock base (0 = auto-detect)
949 ac97_quirk - AC'97 workaround for strange hardware
950 See "AC97 Quirk Option" section below.
951 buggy_irq - Enable workaround for buggy interrupts on some
952 motherboards (default yes on nForce chips,
954 buggy_semaphore - Enable workaround for hardwares with buggy
955 semaphores (e.g. on some ASUS laptops)
958 This module supports one chip and autoprobe.
960 Note: the latest driver supports auto-detection of chip clock.
961 if you still encounter too fast playback, specify the clock
962 explicitly via the module option "ac97_clock=41194".
964 Joystick/MIDI ports are not supported by this driver. If your
965 motherboard has these devices, use the ns558 or snd-mpu401
966 modules, respectively.
968 The power-management is supported.
973 Module for Intel ICH (i8x0) chipset MC97 modems.
974 * Intel i810/810E, i815, i820, i830, i84x, MX440
977 * NVidia NForce, NForce2, NForce2s, NForce3
981 ac97_clock - AC'97 codec clock base (0 = auto-detect)
983 This module supports one card and autoprobe.
985 Note: The default index value of this module is -2, i.e. the first
988 The power-management is supported.
993 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
994 and other sound cards based on AMD InterWave (tm) chip.
996 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
997 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
998 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
999 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1000 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1001 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1002 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1003 effect - 1 = InterWave effects enable (default 0);
1006 This module supports multiple cards, autoprobe and ISA PnP.
1008 Module snd-interwave-stb
1009 ------------------------
1011 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1012 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1013 circuit for extended control of bass, treble and master volume.
1015 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1016 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1017 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1018 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1019 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1020 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1021 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1022 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1023 effect - 1 = InterWave effects enable (default 0);
1026 This module supports multiple cards, autoprobe and ISA PnP.
1031 Module for Korg 1212 IO PCI card
1033 This module supports multiple cards.
1038 Module for Allegro/Maestro3 chips
1040 external_amp - enable external amp (enabled by default)
1041 amp_gpio - GPIO pin number for external amp (0-15) or
1042 -1 for default pin (8 for allegro, 1 for
1045 This module supports autoprobe and multiple chips.
1047 Note: the binding of amplifier is dependent on hardware.
1048 If there is no sound even though all channels are unmuted, try to
1049 specify other gpio connection via amp_gpio option.
1050 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1053 The power-management is supported.
1058 Module for Miro soundcards: miroSOUND PCM 1 pro,
1060 miroSOUND PCM 20 Radio.
1062 port - Port # (0x530,0x604,0xe80,0xf40)
1063 irq - IRQ # (5,7,9,10,11)
1064 dma1 - 1st dma # (0,1,3)
1065 dma2 - 2nd dma # (0,1)
1066 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1067 mpu_irq - MPU-401 irq # (5,7,9,10)
1068 fm_port - FM Port # (0x388)
1069 wss - enable WSS mode
1070 ide - enable onboard ide support
1075 Module for Digigram miXart8 sound cards.
1077 This module supports multiple cards.
1078 Note: One miXart8 board will be represented as 4 alsa cards.
1079 See MIXART.txt for details.
1081 When the driver is compiled as a module and the hotplug firmware
1082 is supported, the firmware data is loaded via hotplug automatically.
1083 Install the necessary firmware files in alsa-firmware package.
1084 When no hotplug fw loader is available, you need to load the
1085 firmware via mixartloader utility in alsa-tools package.
1090 Module for MPU-401 UART devices.
1092 port - port number or -1 (disable)
1093 irq - IRQ number or -1 (disable)
1094 pnp - PnP detection - 0 = disable, 1 = enable (default)
1096 This module supports multiple devices and PnP.
1101 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1104 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1105 irq - IRQ # for MTPAV (7,5, default=7)
1106 hwports - number of supported hardware ports, default=8.
1108 Module supports only 1 card. This module has no enable option.
1113 Module for NeoMagic NM256AV/ZX chips
1115 playback_bufsize - max playback frame size in kB (4-128kB)
1116 capture_bufsize - max capture frame size in kB (4-128kB)
1117 force_ac97 - 0 or 1 (disabled by default)
1118 buffer_top - specify buffer top address
1119 use_cache - 0 or 1 (disabled by default)
1120 vaio_hack - alias buffer_top=0x25a800
1121 reset_workaround - enable AC97 RESET workaround for some laptops
1122 reset_workaround2 - enable extended AC97 RESET workaround for some
1125 This module supports one chip and autoprobe.
1127 The power-management is supported.
1129 Note: on some notebooks the buffer address cannot be detected
1130 automatically, or causes hang-up during initialization.
1131 In such a case, specify the buffer top address explicity via
1134 Sony F250: buffer_top=0x25a800
1135 Sony F270: buffer_top=0x272800
1136 The driver supports only ac97 codec. It's possible to force
1137 to initialize/use ac97 although it's not detected. In such a
1138 case, use force_ac97=1 option - but *NO* guarantee whether it
1141 Note: The NM256 chip can be linked internally with non-AC97
1142 codecs. This driver supports only the AC97 codec, and won't work
1143 with machines with other (most likely CS423x or OPL3SAx) chips,
1144 even though the device is detected in lspci. In such a case, try
1145 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1146 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1147 and proper hardware parameters in the case without ISA PnP.
1149 Note: some laptops need a workaround for AC97 RESET. For the
1150 known hardware like Dell Latitude LS and Sony PCG-F305, this
1151 workaround is enabled automatically. For other laptops with a
1152 hard freeze, you can try reset_workaround=1 option.
1154 Note: Dell Latitude CSx laptops have another problem regarding
1155 AC97 RESET. On these laptops, reset_workaround2 option is
1156 turned on as default. This option is worth to try if the
1157 previous reset_workaround option doesn't help.
1159 Note: This driver is really crappy. It's a porting from the
1160 OSS driver, which is a result of black-magic reverse engineering.
1161 The detection of codec will fail if the driver is loaded *after*
1162 X-server as described above. You might be able to force to load
1163 the module, but it may result in hang-up. Hence, make sure that
1164 you load this module *before* X if you encounter this kind of
1170 Module for Yamaha OPL3-SA2/SA3 sound cards.
1172 port - control port # for OPL3-SA chip (0x370)
1173 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1174 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1175 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1176 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1177 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1178 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1179 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1180 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1182 This module supports multiple cards and ISA PnP. It does not support
1183 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1185 The power-management is supported.
1187 Module snd-opti92x-ad1848
1188 -------------------------
1190 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1191 Module works with OAK Mozart cards as well.
1193 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1194 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1195 fm_port - port # for OPL3 device (0x388)
1196 irq - IRQ # for WSS chip (5,7,9,10,11)
1197 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1198 dma1 - first DMA # for WSS chip (0,1,3)
1200 This module supports only one card, autoprobe and PnP.
1202 Module snd-opti92x-cs4231
1203 -------------------------
1205 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1207 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1208 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1209 fm_port - port # for OPL3 device (0x388)
1210 irq - IRQ # for WSS chip (5,7,9,10,11)
1211 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1212 dma1 - first DMA # for WSS chip (0,1,3)
1213 dma2 - second DMA # for WSS chip (0,1,3)
1215 This module supports only one card, autoprobe and PnP.
1220 Module for sound cards based on OPTi 82c93x chips.
1222 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1223 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1224 fm_port - port # for OPL3 device (0x388)
1225 irq - IRQ # for WSS chip (5,7,9,10,11)
1226 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1227 dma1 - first DMA # for WSS chip (0,1,3)
1228 dma2 - second DMA # for WSS chip (0,1,3)
1230 This module supports only one card, autoprobe and PnP.
1235 Module for Digigram PCXHR boards
1237 This module supports multiple cards.
1239 Module snd-powermac (on ppc only)
1240 ---------------------------------
1242 Module for PowerMac, iMac and iBook on-board soundchips
1244 enable_beep - enable beep using PCM (enabled as default)
1246 Module supports autoprobe a chip.
1248 Note: the driver may have problems regarding endianess.
1250 The power-management is supported.
1252 Module snd-pxa2xx-ac97 (on arm only)
1253 ------------------------------------
1255 Module for AC97 driver for the Intel PXA2xx chip
1257 For ARM architecture only.
1259 The power-management is supported.
1264 Module for Conexant Riptide chip
1266 joystick_port - Joystick port # (default: 0x200)
1267 mpu_port - MPU401 port # (default: 0x330)
1268 opl3_port - OPL3 port # (default: 0x388)
1270 This module supports multiple cards.
1271 The driver requires the firmware loader support on kernel.
1272 You need to install the firmware file "riptide.hex" to the standard
1273 firmware path (e.g. /lib/firmware).
1278 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1279 Prodif96 and Prodif Gold) sound cards.
1281 This module supports multiple cards.
1286 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1288 This module supports multiple cards.
1293 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1295 precise_ptr - Enable precise pointer (doesn't work reliably).
1298 This module supports multiple cards.
1300 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1301 module did formerly. It will allocate the buffers in advance
1302 when any RME9652 cards are found. To make the buffer
1303 allocation sure, load snd-page-alloc module in the early
1304 stage of boot sequence. See "Early Buffer Allocation"
1307 Module snd-sa11xx-uda1341 (on arm only)
1308 ---------------------------------------
1310 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1312 Module supports only one card.
1313 Module has no enable and index options.
1315 The power-management is supported.
1320 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1324 port - port # for SB DSP chip (0x220,0x240,0x260)
1325 irq - IRQ # for SB DSP chip (5,7,9,10)
1326 dma8 - DMA # for SB DSP chip (1,3)
1328 This module supports multiple cards and autoprobe.
1330 The power-management is supported.
1332 Module snd-sb16 and snd-sbawe
1333 -----------------------------
1335 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1336 SoundBlaster AWE 32 (PnP),
1337 SoundBlaster AWE 64 PnP
1339 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1340 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1341 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1342 (snd-sbawe module only)
1343 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1344 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1345 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1346 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1347 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1348 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1350 This module supports multiple cards, autoprobe and ISA PnP.
1352 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1353 disable 16bit DMA with dma16 = -1 module parameter.
1354 Also, all Sound Blaster 16 type cards can operate in 16-bit
1355 half duplex mode through 8-bit DMA channel by disabling their
1358 The power-management is supported.
1363 Module for Aztech Sound Galaxy sound card.
1365 sbport - Port # for SB16 interface (0x220,0x240)
1366 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1367 irq - IRQ # (7,9,10,11)
1370 This module supports multiple cards.
1372 The power-management is supported.
1377 Module for ENSONIQ SoundScape PnP cards.
1379 port - Port # (PnP setup)
1380 irq - IRQ # (PnP setup)
1381 mpu_irq - MPU-401 IRQ # (PnP setup)
1382 dma - DMA # (PnP setup)
1384 This module supports multiple cards. ISA PnP must be enabled.
1385 You need sscape_ctl tool in alsa-tools package for loading
1388 Module snd-sun-amd7930 (on sparc only)
1389 --------------------------------------
1391 Module for AMD7930 sound chips found on Sparcs.
1393 This module supports multiple cards.
1395 Module snd-sun-cs4231 (on sparc only)
1396 -------------------------------------
1398 Module for CS4231 sound chips found on Sparcs.
1400 This module supports multiple cards.
1402 Module snd-sun-dbri (on sparc only)
1403 -----------------------------------
1405 Module for DBRI sound chips found on Sparcs.
1407 This module supports multiple cards.
1409 Module snd-wavefront
1410 --------------------
1412 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1414 cs4232_pcm_port - Port # for CS4232 PCM interface.
1415 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1416 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1417 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1418 use_cs4232_midi - Use CS4232 MPU-401 interface
1419 (inaccessibly located inside your computer)
1420 ics2115_port - Port # for ICS2115
1421 ics2115_irq - IRQ # for ICS2115
1422 fm_port - FM OPL-3 Port #
1423 dma1 - DMA1 # for CS4232 PCM interface.
1424 dma2 - DMA2 # for CS4232 PCM interface.
1425 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1427 This module supports multiple cards and ISA PnP.
1429 Module snd-sonicvibes
1430 ---------------------
1432 Module for S3 SonicVibes PCI sound cards.
1433 * PINE Schubert 32 PCI
1435 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1436 - SoundCard must have onboard SRAM for this.
1437 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1439 This module supports multiple cards and autoprobe.
1441 Module snd-serial-u16550
1442 ------------------------
1444 Module for UART16550A serial MIDI ports.
1446 port - port # for UART16550A chip
1447 irq - IRQ # for UART16550A chip, -1 = poll mode
1448 speed - speed in bauds (9600,19200,38400,57600,115200)
1450 base - base for divisor in bauds (57600,115200,230400,460800)
1452 outs - number of MIDI ports in a serial port (1-4)
1454 adaptor - Type of adaptor.
1455 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1456 3 = MS-124W M/B, 4 = Generic
1458 This module supports multiple cards. This module does not support autoprobe
1459 thus the main port must be specified!!! Other options are optional.
1464 Module for Trident 4DWave DX/NX sound cards.
1465 * Best Union Miss Melody 4DWave PCI
1467 * Warpspeed ONSpeed 4DWave PCI
1470 * CHIC True Sound 4Dwave
1471 * Shark Predator4D-PCI
1472 * Jaton SonicWave 4D
1474 pcm_channels - max channels (voices) reserved for PCM
1475 wavetable_size - max wavetable size in kB (4-?kb)
1477 This module supports multiple cards and autoprobe.
1479 The power-management is supported.
1481 Module snd-usb-audio
1482 --------------------
1484 Module for USB audio and USB MIDI devices.
1486 vid - Vendor ID for the device (optional)
1487 pid - Product ID for the device (optional)
1488 device_setup - Device specific magic number (optional)
1489 - Influence depends on the device
1492 This module supports multiple devices, autoprobe and hotplugging.
1494 Module snd-usb-usx2y
1495 --------------------
1497 Module for Tascam USB US-122, US-224 and US-428 devices.
1499 This module supports multiple devices, autoprobe and hotplugging.
1501 Note: you need to load the firmware via usx2yloader utility included
1502 in alsa-tools and alsa-firmware packages.
1507 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1508 8233A, 8233C, 8235, 8237 (south) bridge.
1510 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1512 joystick - Enable joystick (default off) [VIA686A/686B only]
1513 ac97_clock - AC'97 codec clock base (default 48000Hz)
1514 dxs_support - support DXS channels,
1515 0 = auto (default), 1 = enable, 2 = disable,
1516 3 = 48k only, 4 = no VRA, 5 = enable any sample
1517 rate and different sample rates on different
1519 [VIA8233/C, 8235, 8237 only]
1520 ac97_quirk - AC'97 workaround for strange hardware
1521 See "AC97 Quirk Option" section below.
1523 This module supports one chip and autoprobe.
1525 Note: on some SMP motherboards like MSI 694D the interrupts might
1526 not be generated properly. In such a case, please try to
1527 set the SMP (or MPS) version on BIOS to 1.1 instead of
1528 default value 1.4. Then the interrupt number will be
1529 assigned under 15. You might also upgrade your BIOS.
1531 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1532 channels as the first PCM. On these channels, up to 4
1533 streams can be played at the same time, and the controller
1534 can perform sample rate conversion with separate rates for
1536 As default (dxs_support = 0), 48k fixed rate is chosen
1537 except for the known devices since the output is often
1538 noisy except for 48k on some mother boards due to the
1540 Please try once dxs_support=5 and if it works on other
1541 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1542 know the PCI subsystem vendor/device id's (output of
1544 If dxs_support=5 does not work, try dxs_support=4; if it
1545 doesn't work too, try dxs_support=1. (dxs_support=1 is
1546 usually for old motherboards. The correct implemented
1547 board should work with 4 or 5.) If it still doesn't
1548 work and the default setting is ok, dxs_support=3 is the
1549 right choice. If the default setting doesn't work at all,
1550 try dxs_support=2 to disable the DXS channels.
1551 In any cases, please let us know the result and the
1552 subsystem vendor/device ids. See "Links and Addresses"
1555 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1556 additionally. The mpu_port option is for VIA686 chips only.
1558 The power-management is supported.
1560 Module snd-via82xx-modem
1561 ------------------------
1563 Module for VIA82xx AC97 modem
1565 ac97_clock - AC'97 codec clock base (default 48000Hz)
1567 This module supports one card and autoprobe.
1569 Note: The default index value of this module is -2, i.e. the first
1572 The power-management is supported.
1577 Module for virtual rawmidi devices.
1578 This module creates virtual rawmidi devices which communicate
1579 to the corresponding ALSA sequencer ports.
1581 midi_devs - MIDI devices # (1-4, default=4)
1583 This module supports multiple cards.
1588 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1590 mic - Enable Microphone on V222 Mic (NYI)
1591 ibl - Capture IBL size. (default = 0, minimum size)
1593 This module supports multiple cards.
1595 When the driver is compiled as a module and the hotplug firmware
1596 is supported, the firmware data is loaded via hotplug automatically.
1597 Install the necessary firmware files in alsa-firmware package.
1598 When no hotplug fw loader is available, you need to load the
1599 firmware via vxloader utility in alsa-tools package. To invoke
1600 vxloader automatically, add the following to /etc/modprobe.conf
1602 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1604 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1605 /etc/modules.conf, instead.)
1606 IBL size defines the interrupts period for PCM. The smaller size
1607 gives smaller latency but leads to more CPU consumption, too.
1608 The size is usually aligned to 126. As default (=0), the smallest
1609 size is chosen. The possible IBL values can be found in
1610 /proc/asound/cardX/vx-status proc file.
1612 The power-management is supported.
1617 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
1619 ibl - Capture IBL size. (default = 0, minimum size)
1621 This module supports multiple cards. The module is compiled only when
1622 PCMCIA is supported on kernel.
1624 With the older 2.6.x kernel, to activate the driver via the card
1625 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
1626 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
1627 longer require a config file.
1629 When the driver is compiled as a module and the hotplug firmware
1630 is supported, the firmware data is loaded via hotplug automatically.
1631 Install the necessary firmware files in alsa-firmware package.
1632 When no hotplug fw loader is available, you need to load the
1633 firmware via vxloader utility in alsa-tools package.
1635 About capture IBL, see the description of snd-vx222 module.
1637 Note: the driver is build only when CONFIG_ISA is set.
1639 Note2: snd-vxp440 driver is merged to snd-vxpocket driver since
1642 The power-management is supported.
1647 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
1649 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
1650 1 (auto-detect for YMF744/754 only)
1651 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
1652 1 (auto-detect for YMF744/754 only)
1653 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
1655 rear_switch - enable shared rear/line-in switch (bool)
1657 This module supports autoprobe and multiple chips.
1659 The power-management is supported.
1661 Module snd-pdaudiocf
1662 --------------------
1664 Module for Sound Core PDAudioCF sound card.
1666 Note: the driver is build only when CONFIG_ISA is set.
1668 The power-management is supported.
1674 The ac97_quirk option is used to enable/override the workaround for
1675 specific devices on drivers for on-board AC'97 controllers like
1676 snd-intel8x0. Some hardware have swapped output pins between Master
1677 and Headphone, or Surround (thanks to confusion of AC'97
1678 specifications from version to version :-)
1680 The driver provides the auto-detection of known problematic devices,
1681 but some might be unknown or wrongly detected. In such a case, pass
1682 the proper value with this option.
1684 The following strings are accepted:
1685 - default Don't override the default setting
1686 - none Disable the quirk
1687 - hp_only Bind Master and Headphone controls as a single control
1688 - swap_hp Swap headphone and master controls
1689 - swap_surround Swap master and surround controls
1690 - ad_sharing For AD1985, turn on OMS bit and use headphone
1691 - alc_jack For ALC65x, turn on the jack sense mode
1692 - inv_eapd Inverted EAPD implementation
1693 - mute_led Bind EAPD bit for turning on/off mute LED
1695 For backward compatibility, the corresponding integer value -1, 0,
1696 ... are accepted, too.
1698 For example, if "Master" volume control has no effect on your device
1699 but only "Headphone" does, pass ac97_quirk=hp_only module option.
1702 Configuring Non-ISAPNP Cards
1703 ============================
1705 When the kernel is configured with ISA-PnP support, the modules
1706 supporting the isapnp cards will have module options "isapnp".
1707 If this option is set, *only* the ISA-PnP devices will be probed.
1708 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
1709 together with the proper i/o and irq configuration.
1711 When the kernel is configured without ISA-PnP support, isapnp option
1712 will be not built in.
1715 Module Autoloading Support
1716 ==========================
1718 The ALSA drivers can be loaded automatically on demand by defining
1719 module aliases. The string 'snd-card-%1' is requested for ALSA native
1720 devices where %i is sound card number from zero to seven.
1722 To auto-load an ALSA driver for OSS services, define the string
1723 'sound-slot-%i' where %i means the slot number for OSS, which
1724 corresponds to the card index of ALSA. Usually, define this
1725 as the same card module.
1727 An example configuration for a single emu10k1 card is like below:
1728 ----- /etc/modprobe.conf
1729 alias snd-card-0 snd-emu10k1
1730 alias sound-slot-0 snd-emu10k1
1731 ----- /etc/modprobe.conf
1733 The available number of auto-loaded sound cards depends on the module
1734 option "cards_limit" of snd module. As default it's set to 1.
1735 To enable the auto-loading of multiple cards, specify the number of
1736 sound cards in that option.
1738 When multiple cards are available, it'd better to specify the index
1739 number for each card via module option, too, so that the order of
1740 cards is kept consistent.
1742 An example configuration for two sound cards is like below:
1744 ----- /etc/modprobe.conf
1746 options snd cards_limit=2
1747 alias snd-card-0 snd-interwave
1748 alias snd-card-1 snd-ens1371
1749 options snd-interwave index=0
1750 options snd-ens1371 index=1
1752 alias sound-slot-0 snd-interwave
1753 alias sound-slot-1 snd-ens1371
1754 ----- /etc/moprobe.conf
1756 In this example, the interwave card is always loaded as the first card
1757 (index 0) and ens1371 as the second (index 1).
1760 ALSA PCM devices to OSS devices mapping
1761 =======================================
1763 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
1764 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
1765 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
1766 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
1767 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
1768 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
1769 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
1770 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
1771 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
1773 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
1774 sound card number and second means device number. The ALSA devices
1775 have either 'c' or 'p' suffix indicating the direction, capture and
1776 playback, respectively.
1778 Please note that the device mapping above may be varied via the module
1779 options of snd-pcm-oss module.
1785 The ALSA driver fully supports the devfs extension.
1786 You should add lines below to your devfsd.conf file:
1788 LOOKUP snd MODLOAD ACTION snd
1789 REGISTER ^sound/.* PERMISSIONS root.audio 660
1790 REGISTER ^snd/.* PERMISSIONS root.audio 660
1792 Warning: These lines assume that you have the audio group in your system.
1793 Otherwise replace audio word with another group name (root for
1797 Proc interfaces (/proc/asound)
1798 ==============================
1800 /proc/asound/card#/pcm#[cp]/oss
1801 -------------------------------
1802 String "erase" - erase all additional informations about OSS applications
1803 String "<app_name> <fragments> <fragment_size> [<options>]"
1805 <app_name> - name of application with (higher priority) or without path
1806 <fragments> - number of fragments or zero if auto
1807 <fragment_size> - size of fragment in bytes or zero if auto
1808 <options> - optional parameters
1809 - disable the application tries to open a pcm device for
1810 this channel but does not want to use it.
1811 (Cause a bug or mmap needs)
1812 It's good for Quake etc...
1813 - direct don't use plugins
1814 - block force block mode (rvplayer)
1815 - non-block force non-block mode
1816 - whole-frag write only whole fragments (optimization affecting
1818 - no-silence do not fill silence ahead to avoid clicks
1819 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
1820 instead of filled blocks
1822 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
1823 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
1824 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
1827 Early Buffer Allocation
1828 =======================
1830 Some drivers (e.g. hdsp) require the large contiguous buffers, and
1831 sometimes it's too late to find such spaces when the driver module is
1832 actually loaded due to memory fragmentation. You can pre-allocate the
1833 PCM buffers by loading snd-page-alloc module and write commands to its
1834 proc file in prior, for example, in the early boot stage like
1835 /etc/init.d/*.local scripts.
1837 Reading the proc file /proc/drivers/snd-page-alloc shows the current
1838 usage of page allocation. In writing, you can send the following
1839 commands to the snd-page-alloc driver:
1841 - add VENDOR DEVICE MASK SIZE BUFFERS
1843 VENDOR and DEVICE are PCI vendor and device IDs. They take
1844 integer numbers (0x prefix is needed for the hex).
1845 MASK is the PCI DMA mask. Pass 0 if not restricted.
1846 SIZE is the size of each buffer to allocate. You can pass
1847 k and m suffix for KB and MB. The max number is 16MB.
1848 BUFFERS is the number of buffers to allocate. It must be greater
1849 than 0. The max number is 4.
1853 This will erase the all pre-allocated buffers which are not in
1860 ALSA project homepage
1861 http://www.alsa-project.org
1863 ALSA Bug Tracking System
1864 https://bugtrack.alsa-project.org/bugs/
1867 mailto:alsa-devel@lists.sourceforge.net