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.
65 The PCM OSS emulation module.
66 This module takes options which change the mapping of devices.
68 dsp_map - PCM device number maps assigned to the 1st OSS device.
70 adsp_map - PCM device number maps assigned to the 2st OSS device.
73 - Don't block opening busy PCM devices. Default: 1
75 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
76 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
77 to PCM #0 of the card #0.
78 For changing the second or later card, specify the option with
79 commas, such like "dsp_map=0,1".
81 nonblock_open option is used to change the behavior of the PCM
82 regarding opening the device. When this option is non-zero,
83 opening a busy OSS PCM device won't be blocked but return
84 immediately with EAGAIN (just like O_NONBLOCK flag).
89 This module takes options which change the mapping of devices.
90 similar to those of the snd-pcm-oss module.
92 midi_map - MIDI device number maps assigned to the 1st OSS device.
94 amidi_map - MIDI device number maps assigned to the 2st OSS device.
97 Common parameters for top sound card modules
98 --------------------------------------------
100 Each of top level sound card module takes the following options.
102 index - index (slot #) of sound card
103 - Values: 0 through 31 or negative
104 - If nonnegative, assign that index number
105 - if negative, interpret as a bitmask of permissible
106 indices; the first free permitted index is assigned
108 id - card ID (identifier or name)
109 - Can be up to 15 characters long
110 - Default: the card type
111 - A directory by this name is created under /proc/asound/
112 containing information about the card
113 - This ID can be used instead of the index number in
116 - Default: enabled, for PCI and ISA PnP cards
121 Module for AdLib FM cards.
123 port - port # for OPL chip
125 This module supports multiple cards. It does not support autoprobe, so
126 the port must be specified. For actual AdLib FM cards it will be 0x388.
127 Note that this card does not have PCM support and no mixer; only FM
130 Make sure you have "sbiload" from the alsa-tools package available and,
131 after loading the module, find out the assigned ALSA sequencer port
132 number through "sbiload -l". Example output:
134 Port Client name Port name
135 64:0 OPL2 FM synth OPL2 FM Port
137 Load the std.sb and drums.sb patches also supplied by sbiload:
139 sbiload -p 64:0 std.sb drums.sb
141 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
142 instead. To have the card produce sound, use aplaymidi from alsa-utils:
144 aplaymidi -p 64:0 foo.mid
149 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
151 port - port # for AD1816A chip (PnP setup)
152 mpu_port - port # for MPU-401 UART (PnP setup)
153 fm_port - port # for OPL3 (PnP setup)
154 irq - IRQ # for AD1816A chip (PnP setup)
155 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
156 dma1 - first DMA # for AD1816A chip (PnP setup)
157 dma2 - second DMA # for AD1816A chip (PnP setup)
158 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
160 This module supports multiple cards, autoprobe and PnP.
165 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
167 port - port # for AD1848 chip
168 irq - IRQ # for AD1848 chip
169 dma1 - DMA # for AD1848 chip (0,1,3)
171 This module supports multiple cards. It does not support autoprobe
172 thus main port must be specified!!! Other ports are optional.
174 The power-management is supported.
179 Module for Analog Devices AD1889 chips.
181 ac97_quirk - AC'97 workaround for strange hardware
182 See the description of intel8x0 module for details.
184 This module supports multiple cards.
189 Module for ALi M5451 PCI chip.
191 pcm_channels - Number of hardware channels assigned for PCM
192 spdif - Support SPDIF I/O
195 This module supports one chip and autoprobe.
197 The power-management is supported.
202 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
204 port - port # for ALS100 (SB16) chip (PnP setup)
205 irq - IRQ # for ALS100 (SB16) chip (PnP setup)
206 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)
207 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)
208 mpu_port - port # for MPU-401 UART (PnP setup)
209 mpu_irq - IRQ # for MPU-401 (PnP setup)
210 fm_port - port # for OPL3 FM (PnP setup)
212 This module supports multiple cards, autoprobe and PnP.
214 The power-management is supported.
219 Module for Avance Logic ALS300 and ALS300+
221 This module supports multiple cards.
223 The power-management is supported.
228 Module for sound cards based on Avance Logic ALS4000 PCI chip.
230 joystick_port - port # for legacy joystick support.
231 0 = disabled (default), 1 = auto-detect
233 This module supports multiple cards, autoprobe and PnP.
235 The power-management is supported.
240 Module for ATI IXP 150/200/250/400 AC97 controllers.
242 ac97_clock - AC'97 clock (default = 48000)
243 ac97_quirk - AC'97 workaround for strange hardware
244 See "AC97 Quirk Option" section below.
245 ac97_codec - Workaround to specify which AC'97 codec
246 instead of probing. If this works for you
247 file a bug with your `lspci -vn` output.
249 -1 -- Default behavior.
250 0-2 -- Use the specified codec.
251 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
253 This module supports one card and autoprobe.
255 ATI IXP has two different methods to control SPDIF output. One is
256 over AC-link and another is over the "direct" SPDIF output. The
257 implementation depends on the motherboard, and you'll need to
258 choose the correct one via spdif_aclink module option.
260 The power-management is supported.
262 Module snd-atiixp-modem
263 -----------------------
265 Module for ATI IXP 150/200/250 AC97 modem controllers.
267 This module supports one card and autoprobe.
269 Note: The default index value of this module is -2, i.e. the first
272 The power-management is supported.
274 Module snd-au8810, snd-au8820, snd-au8830
275 -----------------------------------------
277 Module for Aureal Vortex, Vortex2 and Advantage device.
279 pcifix - Control PCI workarounds
280 0 = Disable all workarounds
281 1 = Force the PCI latency of the Aureal card to 0xff
282 2 = Force the Extend PCI#2 Internal Master for Efficient
283 Handling of Dummy Requests on the VIA KT133 AGP Bridge
284 3 = Force both settings
285 255 = Autodetect what is required (default)
287 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
288 EQ, mpu401, gameport. A3D and wavetable support are still in development.
289 Development and reverse engineering work is being coordinated at
290 http://savannah.nongnu.org/projects/openvortex/
291 SPDIF output has a copy of the AC97 codec output, unless you use the
292 "spdif" pcm device, which allows raw data passthru.
293 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
296 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
297 control correctly. If you have problems regarding this, try
298 another ALSA compliant mixer (alsamixer works).
303 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
305 port - port # for AZT2320 chip (PnP setup)
306 wss_port - port # for WSS (PnP setup)
307 mpu_port - port # for MPU-401 UART (PnP setup)
308 fm_port - FM port # for AZT2320 chip (PnP setup)
309 irq - IRQ # for AZT2320 (WSS) chip (PnP setup)
310 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
311 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
312 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
314 This module supports multiple cards, PnP and autoprobe.
316 The power-management is supported.
321 Module for sound cards based on Aztech AZF3328 PCI chip.
323 joystick - Enable joystick (default off)
325 This module supports multiple cards.
330 Module for video cards based on Bt87x chips.
332 digital_rate - Override the default digital rate (Hz)
333 load_all - Load the driver even if the card model isn't known
335 This module supports multiple cards.
337 Note: The default index value of this module is -2, i.e. the first
343 Module for Creative Audigy LS and SB Live 24bit
345 This module supports multiple cards.
351 Module for sound cards based on C-Media CMI8330 ISA chips.
353 wssport - port # for CMI8330 chip (WSS)
354 wssirq - IRQ # for CMI8330 chip (WSS)
355 wssdma - first DMA # for CMI8330 chip (WSS)
356 sbport - port # for CMI8330 chip (SB16)
357 sbirq - IRQ # for CMI8330 chip (SB16)
358 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
359 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
361 This module supports multiple cards and autoprobe.
363 The power-management is supported.
368 Module for C-Media CMI8338 and 8738 PCI sound cards.
370 mpu_port - 0x300,0x310,0x320,0x330 = legacy port,
371 1 = integrated PCI port,
372 0 = disable (default)
373 fm_port - 0x388 (default), 0 = disable (default)
374 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
376 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
378 This module supports autoprobe and multiple cards.
380 The power-management is supported.
385 Module for sound cards based on CS4231 ISA chips.
387 port - port # for CS4231 chip
388 mpu_port - port # for MPU-401 UART (optional), -1 = disable
389 irq - IRQ # for CS4231 chip
390 mpu_irq - IRQ # for MPU-401 UART
391 dma1 - first DMA # for CS4231 chip
392 dma2 - second DMA # for CS4231 chip
394 This module supports multiple cards. This module does not support autoprobe
395 thus main port must be specified!!! Other ports are optional.
397 The power-management is supported.
402 Module for sound cards based on CS4232/CS4232A ISA chips.
404 port - port # for CS4232 chip (PnP setup - 0x534)
405 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
406 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
407 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
408 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
409 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
410 dma1 - first DMA # for CS4232 chip (0,1,3)
411 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
412 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
414 This module supports multiple cards. This module does not support autoprobe
415 thus main port must be specified!!! Other ports are optional.
417 The power-management is supported.
422 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
423 CS4238B/CS4239 ISA chips.
425 port - port # for CS4236 chip (PnP setup - 0x534)
426 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
427 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
428 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
429 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
430 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
431 dma1 - first DMA # for CS4236 chip (0,1,3)
432 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
433 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
435 This module supports multiple cards. This module does not support autoprobe
436 (if ISA PnP is not used) thus main port and control port must be
437 specified!!! Other ports are optional.
439 The power-management is supported.
444 Module for Cirrus Logic CS4281 soundchip.
446 dual_codec - Secondary codec ID (0 = disable, default)
448 This module supports multiple cards.
450 The power-management is supported.
455 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
456 CS4624/CS4630/CS4280 PCI chips.
458 external_amp - Force to enable external amplifier.
459 thinkpad - Force to enable Thinkpad's CLKRUN control.
460 mmap_valid - Support OSS mmap mode (default = 0).
462 This module supports multiple cards and autoprobe.
463 Usually external amp and CLKRUN controls are detected automatically
464 from PCI sub vendor/device ids. If they don't work, give the options
467 The power-management is supported.
469 Module snd-cs5535audio
470 ----------------------
472 Module for multifunction CS5535 companion PCI device
474 The power-management is supported.
479 Module for Echoaudio Darla20
481 This module supports multiple cards.
482 The driver requires the firmware loader support on kernel.
487 Module for Echoaudio Darla24
489 This module supports multiple cards.
490 The driver requires the firmware loader support on kernel.
495 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
498 port - Port # (PnP setup)
499 mpu_port - Port # for MPU-401 (PnP setup)
500 fm_port - Port # for FM OPL-3 (PnP setup)
501 irq - IRQ # (PnP setup)
502 mpu_irq - IRQ # for MPU-401 (PnP setup)
503 dma8 - DMA # (PnP setup)
505 This module supports multiple cards. This module is enabled only with
508 The power-management is supported.
513 Module for the dummy sound card. This "card" doesn't do any output
514 or input, but you may use this module for any application which
515 requires a sound card (like RealPlayer).
517 The power-management is supported.
522 Module for Echoaudio 3G cards (Gina3G/Layla3G)
524 This module supports multiple cards.
525 The driver requires the firmware loader support on kernel.
530 Module for EMU10K1/EMU10k2 based PCI sound cards.
531 * Sound Blaster Live!
532 * Sound Blaster PCI 512
533 * Emu APS (partially supported)
534 * Sound Blaster Audigy
536 extin - bitmap of available external inputs for FX8010 (see bellow)
537 extout - bitmap of available external outputs for FX8010 (see bellow)
538 seq_ports - allocated sequencer ports (4 by default)
539 max_synth_voices - limit of voices used for wavetable (64 by default)
540 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
541 given in MB unit. Default value is 128.
542 enable_ir - enable IR
544 This module supports multiple cards and autoprobe.
546 Input & Output configurations [extin/extout]
547 * Creative Card wo/Digital out [0x0003/0x1f03]
548 * Creative Card w/Digital out [0x0003/0x1f0f]
549 * Creative Card w/Digital CD in [0x000f/0x1f0f]
550 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
551 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
552 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
553 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
554 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
555 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
556 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
557 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
558 * Creative Card all ins and outs [0x3fff/0x7fff]
560 The power-management is supported.
565 Module for Creative Emu10k1X (SB Live Dell OEM version)
567 This module supports multiple cards.
572 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
573 * SoundBlaster PCI 64
574 * SoundBlaster PCI 128
576 joystick - Enable joystick (default off)
578 This module supports multiple cards and autoprobe.
580 The power-management is supported.
585 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
586 * SoundBlaster PCI 64
587 * SoundBlaster PCI 128
588 * SoundBlaster Vibra PCI
590 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
591 0 = disable (default), 1 = auto-detect
593 This module supports multiple cards and autoprobe.
595 The power-management is supported.
600 Module for sound cards based on ESS ES968 chip (PnP only).
602 port - port # for ES968 (SB8) chip (PnP setup)
603 irq - IRQ # for ES968 (SB8) chip (PnP setup)
604 dma1 - DMA # for ES968 (SB8) chip (PnP setup)
606 This module supports multiple cards, PnP and autoprobe.
608 The power-management is supported.
613 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
615 port - port # for ES-1688 chip (0x220,0x240,0x260)
616 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
617 irq - IRQ # for ES-1688 chip (5,7,9,10)
618 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
619 dma8 - DMA # for ES-1688 chip (0,1,3)
621 This module supports multiple cards and autoprobe (without MPU-401 port).
626 Module for ESS AudioDrive ES-18xx sound cards.
628 port - port # for ES-18xx chip (0x220,0x240,0x260)
629 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
630 fm_port - port # for FM (optional, not used)
631 irq - IRQ # for ES-18xx chip (5,7,9,10)
632 dma1 - first DMA # for ES-18xx chip (0,1,3)
633 dma2 - first DMA # for ES-18xx chip (0,1,3)
634 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
636 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
637 port if native ISA PnP routines are not used).
638 When dma2 is equal with dma1, the driver works as half-duplex.
640 The power-management is supported.
645 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
647 This module supports multiple cards and autoprobe.
649 The power-management is supported.
654 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
656 total_bufsize - total buffer size in kB (1-4096kB)
657 pcm_substreams_p - playback channels (1-8, default=2)
658 pcm_substreams_c - capture channels (1-8, default=0)
659 clock - clock (0 = auto-detection)
660 use_pm - support the power-management (0 = off, 1 = on,
662 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
663 joystick - enable joystick (default off)
665 This module supports multiple cards and autoprobe.
667 The power-management is supported.
672 Module for ForteMedia FM801 based PCI sound cards.
674 tea575x_tuner - Enable TEA575x tuner
675 - 1 = MediaForte 256-PCS
676 - 2 = MediaForte 256-PCPR
677 - 3 = MediaForte 64-PCR
678 - High 16-bits are video (radio) device number + 1
679 - example: 0x10002 (MediaForte 256-PCPR, device 1)
681 This module supports multiple cards and autoprobe.
683 The power-management is supported.
688 Module for Echoaudio Gina20
690 This module supports multiple cards.
691 The driver requires the firmware loader support on kernel.
696 Module for Echoaudio Gina24
698 This module supports multiple cards.
699 The driver requires the firmware loader support on kernel.
701 Module snd-gusclassic
702 ---------------------
704 Module for Gravis UltraSound Classic sound card.
706 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
707 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
708 dma1 - DMA # for GF1 chip (1,3,5,6,7)
709 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
710 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
711 voices - GF1 voices limit (14-32)
712 pcm_voices - reserved PCM voices
714 This module supports multiple cards and autoprobe.
716 Module snd-gusextreme
717 ---------------------
719 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
721 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
722 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
723 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
724 irq - IRQ # for ES-1688 chip (5,7,9,10)
725 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
726 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
727 dma8 - DMA # for ES-1688 chip (0,1,3)
728 dma1 - DMA # for GF1 chip (1,3,5,6,7)
729 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
730 voices - GF1 voices limit (14-32)
731 pcm_voices - reserved PCM voices
733 This module supports multiple cards and autoprobe (without MPU-401 port).
738 Module for Gravis UltraSound MAX sound card.
740 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
741 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
742 dma1 - DMA # for GF1 chip (1,3,5,6,7)
743 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
744 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
745 voices - GF1 voices limit (14-32)
746 pcm_voices - reserved PCM voices
748 This module supports multiple cards and autoprobe.
753 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),
754 ATI SB450, SB600, RS600,
758 model - force the model name
759 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
760 single_cmd - Use single immediate commands to communicate with
761 codecs (for debugging only)
762 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
764 This module supports one card and autoprobe.
766 Each codec may have a model table for different configurations.
767 If your machine isn't listed there, the default (usually minimal)
768 configuration is set up. You can pass "model=<name>" option to
769 specify a certain model in such a case. There are different
770 models depending on the codec chip.
772 Model name Description
773 ---------- -----------
775 3stack 3-jack in back and a headphone out
776 3stack-digout 3-jack in back, a HP out and a SPDIF out
777 5stack 5-jack in back, 2-jack in front
778 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
779 6stack 6-jack in back, 2-jack in front
780 6stack-digout 6-jack with a SPDIF out
782 z71v 3-jack (HP shared SPDIF)
783 asus 3-jack (ASUS Mobo)
785 asus-dig ASUS with SPDIF out
786 asus-dig2 ASUS with SPDIF out (using GPIO2)
789 lg LG laptop (m1 express dual)
790 lg-lw LG LW20/LW25 laptop
792 clevo Clevo laptops (m520G, m665n)
793 test for testing/debugging purpose, almost all controls can be
794 adjusted. Appearing only when compiled with
796 auto auto-config reading BIOS (default)
800 hp-3013 HP machines (3013-variant)
801 fujitsu Fujitsu S7020
803 basic fixed pin assignment (old default model)
804 auto auto-config reading BIOS (default)
807 fujitsu Fujitsu Laptop
808 hp-bpc HP xw4400/6400/8400/9400 laptops
810 hippo Hippo (ATI) with jack detection, Sony UX-90s
811 hippo_1 Hippo (Benq) with jack detection
812 basic fixed pin assignment w/o SPDIF
813 auto auto-config reading BIOS (default)
816 3stack-dig 3-jack with SPDIF I/O
817 6stack-dig 6-jack digital with SPDIF I/O
819 macpro MacPro support
820 auto auto-config reading BIOS (default)
823 3stack-dig 3-jack with SPDIF I/O
824 6stack-dig 6-jack digital with SPDIF I/O
825 3stack-6ch 3-jack 6-channel
826 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
827 6stack-dig-demo 6-jack digital for Intel demo board
828 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
829 medion Medion Laptops
831 targa-2ch-dig Targs/MSI with 2-channel
832 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
833 auto auto-config reading BIOS (default)
837 3stack-dig 3-jack with SPDIF I/O
838 6stack-dig 6-jack with SPDIF I/O
839 3stack-660 3-jack (for ALC660)
840 uniwill-m31 Uniwill M31 laptop
841 toshiba Toshiba laptop support
842 asus Asus laptop support
843 asus-laptop ASUS F2/F3 laptops
844 auto auto-config reading BIOS (default)
847 minimal 3-jack in back
848 min_fp 3-jack in back, 2-jack in front
849 full 6-jack in back, 2-jack in front
850 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
851 allout 5-jack in back, 2-jack in front, SPDIF out
852 auto auto-config reading BIOS (default)
855 basic 3-jack (default)
857 thinkpad Lenovo Thinkpad T60/X60/Z60
860 6stack 6-jack, separate surrounds (default)
861 3stack 3-stack, shared surrounds
862 laptop 2-channel only (FSC V2060, Samsung M50)
863 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
864 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
868 6stack-dig ditto with SPDIF
870 3stack-dig ditto with SPDIF
871 laptop 3-jack with hp-jack automute
872 laptop-dig ditto with SPDIF
873 auto auto-config reading BIOS (default)
877 test for testing/debugging purpose, almost all controls
878 can be adjusted. Appearing only when compiled with
882 laptop Basic Laptop config
883 laptop-hp Laptop config for some HP models (subdevice 30A5)
884 laptop-eapd Laptop config with EAPD support
885 test for testing/debugging purpose, almost all controls
886 can be adjusted. Appearing only when compiled with
889 STAC9200/9205/9220/9221/9254
892 5stack D945 5stack + SPDIF
895 ref Reference board, base config
896 m2-2 Some Gateway MX series laptops
897 m6 Some Gateway NX series laptops
899 STAC9227/9228/9229/927x
902 5stack D965 5stack + SPDIF
905 vaio Setup for VAIO FE550G/SZ110
906 vaio-ar Setup for VAIO AR
908 If the default configuration doesn't work and one of the above
909 matches with your device, report it together with the PCI
910 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
911 ML (see the section "Links and Addresses").
913 Note 2: If you get click noises on output, try the module option
914 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
915 register value without FIFO size correction as the current
916 DMA pointer. position_fix=2 will make the driver to use
917 the position buffer instead of reading SD_LPIB register.
918 (Usually SD_LPLIB register is more accurate than the
921 NB: If you get many "azx_get_response timeout" messages at
922 loading, it's likely a problem of interrupts (e.g. ACPI irq
923 routing). Try to boot with options like "pci=noacpi". Also, you
924 can try "single_cmd=1" module option. This will switch the
925 communication method between HDA controller and codecs to the
926 single immediate commands instead of CORB/RIRB. Basically, the
927 single command mode is provided only for BIOS, and you won't get
928 unsolicited events, too. But, at least, this works independently
929 from the irq. Remember this is a last resort, and should be
930 avoided as much as possible...
932 The power-management is supported.
937 Module for RME Hammerfall DSP audio interface(s)
939 This module supports multiple cards.
941 Note: The firmware data can be automatically loaded via hotplug
942 when CONFIG_FW_LOADER is set. Otherwise, you need to load
943 the firmware via hdsploader utility included in alsa-tools
945 The firmware data is found in alsa-firmware package.
947 Note: snd-page-alloc module does the job which snd-hammerfall-mem
948 module did formerly. It will allocate the buffers in advance
949 when any HDSP cards are found. To make the buffer
950 allocation sure, load snd-page-alloc module in the early
951 stage of boot sequence. See "Early Buffer Allocation"
957 Module for RME HDSP MADI board.
959 precise_ptr - Enable precise pointer, or disable.
960 line_outs_monitor - Send playback streams to analog outs by default.
961 enable_monitor - Enable Analog Out on Channel 63/64 by default.
963 See hdspm.txt for details.
968 Module for Envy24 (ICE1712) based PCI sound cards.
969 * MidiMan M Audio Delta 1010
970 * MidiMan M Audio Delta 1010LT
971 * MidiMan M Audio Delta DiO 2496
972 * MidiMan M Audio Delta 66
973 * MidiMan M Audio Delta 44
974 * MidiMan M Audio Delta 410
975 * MidiMan M Audio Audiophile 2496
981 * Hoontech SoundTrack DSP 24
982 * Hoontech SoundTrack DSP 24 Value
983 * Hoontech SoundTrack DSP 24 Media 7.1
984 * Event Electronics, EZ8
986 * Lionstracs, Mediastaton
988 model - Use the given board model, one of the following:
989 delta1010, dio2496, delta66, delta44, audiophile, delta410,
990 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
991 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
992 phase88, mediastation
993 omni - Omni I/O support for MidiMan M-Audio Delta44/66
994 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
995 in msec resolution, default value is 500 (0.5 sec)
997 This module supports multiple cards and autoprobe. Note: The consumer part
998 is not used with all Envy24 based cards (for example in the MidiMan Delta
1001 Note: The supported board is detected by reading EEPROM or PCI
1002 SSID (if EEPROM isn't available). You can override the
1003 model by passing "model" module option in case that the
1004 driver isn't configured properly or you want to try another
1010 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1011 * MidiMan M Audio Revolution 5.1
1012 * MidiMan M Audio Revolution 7.1
1013 * MidiMan M Audio Audiophile 192
1015 * TerraTec Aureon 5.1 Sky
1016 * TerraTec Aureon 7.1 Space
1017 * TerraTec Aureon 7.1 Universe
1020 * AudioTrak Prodigy 7.1
1021 * AudioTrak Prodigy 7.1LT
1022 * AudioTrak Prodigy 192
1024 * Albatron K8X800 Pro II
1025 * Chaintech ZNF3-150
1026 * Chaintech ZNF3-250
1031 model - Use the given board model, one of the following:
1032 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1033 prodigy192, aureon51, aureon71, universe, ap192,
1034 k8x800, phase22, phase28, ms300, av710
1036 This module supports multiple cards and autoprobe.
1038 Note: The supported board is detected by reading EEPROM or PCI
1039 SSID (if EEPROM isn't available). You can override the
1040 model by passing "model" module option in case that the
1041 driver isn't configured properly or you want to try another
1047 Module for Echoaudio Indigo
1049 This module supports multiple cards.
1050 The driver requires the firmware loader support on kernel.
1055 Module for Echoaudio Indigo DJ
1057 This module supports multiple cards.
1058 The driver requires the firmware loader support on kernel.
1063 Module for Echoaudio Indigo IO
1065 This module supports multiple cards.
1066 The driver requires the firmware loader support on kernel.
1071 Module for AC'97 motherboards from Intel and compatibles.
1072 * Intel i810/810E, i815, i820, i830, i84x, MX440
1073 ICH5, ICH6, ICH7, ESB2
1074 * SiS 7012 (SiS 735)
1075 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1077 * AMD AMD768, AMD8111
1080 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1081 ac97_quirk - AC'97 workaround for strange hardware
1082 See "AC97 Quirk Option" section below.
1083 buggy_irq - Enable workaround for buggy interrupts on some
1084 motherboards (default yes on nForce chips,
1086 buggy_semaphore - Enable workaround for hardwares with buggy
1087 semaphores (e.g. on some ASUS laptops)
1089 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1090 from the controller chip
1091 (0 = off, 1 = on, -1 = default)
1093 This module supports one chip and autoprobe.
1095 Note: the latest driver supports auto-detection of chip clock.
1096 if you still encounter too fast playback, specify the clock
1097 explicitly via the module option "ac97_clock=41194".
1099 Joystick/MIDI ports are not supported by this driver. If your
1100 motherboard has these devices, use the ns558 or snd-mpu401
1101 modules, respectively.
1103 The power-management is supported.
1105 Module snd-intel8x0m
1106 --------------------
1108 Module for Intel ICH (i8x0) chipset MC97 modems.
1109 * Intel i810/810E, i815, i820, i830, i84x, MX440
1111 * SiS 7013 (SiS 735)
1112 * NVidia NForce, NForce2, NForce2s, NForce3
1116 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1118 This module supports one card and autoprobe.
1120 Note: The default index value of this module is -2, i.e. the first
1123 The power-management is supported.
1125 Module snd-interwave
1126 --------------------
1128 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1129 and other sound cards based on AMD InterWave (tm) chip.
1131 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1132 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1133 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1134 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1135 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1136 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1137 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1138 effect - 1 = InterWave effects enable (default 0);
1141 This module supports multiple cards, autoprobe and ISA PnP.
1143 Module snd-interwave-stb
1144 ------------------------
1146 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1147 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1148 circuit for extended control of bass, treble and master volume.
1150 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1151 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1152 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1153 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1154 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1155 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1156 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1157 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1158 effect - 1 = InterWave effects enable (default 0);
1161 This module supports multiple cards, autoprobe and ISA PnP.
1166 Module for Korg 1212 IO PCI card
1168 This module supports multiple cards.
1173 Module for Echoaudio Layla20
1175 This module supports multiple cards.
1176 The driver requires the firmware loader support on kernel.
1181 Module for Echoaudio Layla24
1183 This module supports multiple cards.
1184 The driver requires the firmware loader support on kernel.
1189 Module for Allegro/Maestro3 chips
1191 external_amp - enable external amp (enabled by default)
1192 amp_gpio - GPIO pin number for external amp (0-15) or
1193 -1 for default pin (8 for allegro, 1 for
1196 This module supports autoprobe and multiple chips.
1198 Note: the binding of amplifier is dependent on hardware.
1199 If there is no sound even though all channels are unmuted, try to
1200 specify other gpio connection via amp_gpio option.
1201 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1204 The power-management is supported.
1209 Module for Echoaudio Mia
1211 This module supports multiple cards.
1212 The driver requires the firmware loader support on kernel.
1217 Module for Miro soundcards: miroSOUND PCM 1 pro,
1219 miroSOUND PCM 20 Radio.
1221 port - Port # (0x530,0x604,0xe80,0xf40)
1222 irq - IRQ # (5,7,9,10,11)
1223 dma1 - 1st dma # (0,1,3)
1224 dma2 - 2nd dma # (0,1)
1225 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1226 mpu_irq - MPU-401 irq # (5,7,9,10)
1227 fm_port - FM Port # (0x388)
1228 wss - enable WSS mode
1229 ide - enable onboard ide support
1234 Module for Digigram miXart8 sound cards.
1236 This module supports multiple cards.
1237 Note: One miXart8 board will be represented as 4 alsa cards.
1238 See MIXART.txt for details.
1240 When the driver is compiled as a module and the hotplug firmware
1241 is supported, the firmware data is loaded via hotplug automatically.
1242 Install the necessary firmware files in alsa-firmware package.
1243 When no hotplug fw loader is available, you need to load the
1244 firmware via mixartloader utility in alsa-tools package.
1249 Module for Echoaudio Mona
1251 This module supports multiple cards.
1252 The driver requires the firmware loader support on kernel.
1257 Module for MPU-401 UART devices.
1259 port - port number or -1 (disable)
1260 irq - IRQ number or -1 (disable)
1261 pnp - PnP detection - 0 = disable, 1 = enable (default)
1263 This module supports multiple devices and PnP.
1268 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1271 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1272 irq - IRQ # for MTPAV (7,5, default=7)
1273 hwports - number of supported hardware ports, default=8.
1275 Module supports only 1 card. This module has no enable option.
1280 Module for Ego Systems (ESI) Miditerminal 4140
1282 This module supports multiple devices.
1283 Requires parport (CONFIG_PARPORT).
1288 Module for NeoMagic NM256AV/ZX chips
1290 playback_bufsize - max playback frame size in kB (4-128kB)
1291 capture_bufsize - max capture frame size in kB (4-128kB)
1292 force_ac97 - 0 or 1 (disabled by default)
1293 buffer_top - specify buffer top address
1294 use_cache - 0 or 1 (disabled by default)
1295 vaio_hack - alias buffer_top=0x25a800
1296 reset_workaround - enable AC97 RESET workaround for some laptops
1297 reset_workaround2 - enable extended AC97 RESET workaround for some
1300 This module supports one chip and autoprobe.
1302 The power-management is supported.
1304 Note: on some notebooks the buffer address cannot be detected
1305 automatically, or causes hang-up during initialization.
1306 In such a case, specify the buffer top address explicitly via
1307 the buffer_top option.
1309 Sony F250: buffer_top=0x25a800
1310 Sony F270: buffer_top=0x272800
1311 The driver supports only ac97 codec. It's possible to force
1312 to initialize/use ac97 although it's not detected. In such a
1313 case, use force_ac97=1 option - but *NO* guarantee whether it
1316 Note: The NM256 chip can be linked internally with non-AC97
1317 codecs. This driver supports only the AC97 codec, and won't work
1318 with machines with other (most likely CS423x or OPL3SAx) chips,
1319 even though the device is detected in lspci. In such a case, try
1320 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1321 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1322 and proper hardware parameters in the case without ISA PnP.
1324 Note: some laptops need a workaround for AC97 RESET. For the
1325 known hardware like Dell Latitude LS and Sony PCG-F305, this
1326 workaround is enabled automatically. For other laptops with a
1327 hard freeze, you can try reset_workaround=1 option.
1329 Note: Dell Latitude CSx laptops have another problem regarding
1330 AC97 RESET. On these laptops, reset_workaround2 option is
1331 turned on as default. This option is worth to try if the
1332 previous reset_workaround option doesn't help.
1334 Note: This driver is really crappy. It's a porting from the
1335 OSS driver, which is a result of black-magic reverse engineering.
1336 The detection of codec will fail if the driver is loaded *after*
1337 X-server as described above. You might be able to force to load
1338 the module, but it may result in hang-up. Hence, make sure that
1339 you load this module *before* X if you encounter this kind of
1345 Module for Yamaha OPL3-SA2/SA3 sound cards.
1347 port - control port # for OPL3-SA chip (0x370)
1348 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1349 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1350 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1351 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1352 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1353 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1354 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1355 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1357 This module supports multiple cards and ISA PnP. It does not support
1358 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1360 The power-management is supported.
1362 Module snd-opti92x-ad1848
1363 -------------------------
1365 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1366 Module works with OAK Mozart cards as well.
1368 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1369 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1370 fm_port - port # for OPL3 device (0x388)
1371 irq - IRQ # for WSS chip (5,7,9,10,11)
1372 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1373 dma1 - first DMA # for WSS chip (0,1,3)
1375 This module supports only one card, autoprobe and PnP.
1377 Module snd-opti92x-cs4231
1378 -------------------------
1380 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1382 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1383 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1384 fm_port - port # for OPL3 device (0x388)
1385 irq - IRQ # for WSS chip (5,7,9,10,11)
1386 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1387 dma1 - first DMA # for WSS chip (0,1,3)
1388 dma2 - second DMA # for WSS chip (0,1,3)
1390 This module supports only one card, autoprobe and PnP.
1395 Module for sound cards based on OPTi 82c93x chips.
1397 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1398 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1399 fm_port - port # for OPL3 device (0x388)
1400 irq - IRQ # for WSS chip (5,7,9,10,11)
1401 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1402 dma1 - first DMA # for WSS chip (0,1,3)
1403 dma2 - second DMA # for WSS chip (0,1,3)
1405 This module supports only one card, autoprobe and PnP.
1410 Module for Digigram PCXHR boards
1412 This module supports multiple cards.
1414 Module snd-powermac (on ppc only)
1415 ---------------------------------
1417 Module for PowerMac, iMac and iBook on-board soundchips
1419 enable_beep - enable beep using PCM (enabled as default)
1421 Module supports autoprobe a chip.
1423 Note: the driver may have problems regarding endianess.
1425 The power-management is supported.
1427 Module snd-pxa2xx-ac97 (on arm only)
1428 ------------------------------------
1430 Module for AC97 driver for the Intel PXA2xx chip
1432 For ARM architecture only.
1434 The power-management is supported.
1439 Module for Conexant Riptide chip
1441 joystick_port - Joystick port # (default: 0x200)
1442 mpu_port - MPU401 port # (default: 0x330)
1443 opl3_port - OPL3 port # (default: 0x388)
1445 This module supports multiple cards.
1446 The driver requires the firmware loader support on kernel.
1447 You need to install the firmware file "riptide.hex" to the standard
1448 firmware path (e.g. /lib/firmware).
1453 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1454 Prodif96 and Prodif Gold) sound cards.
1456 This module supports multiple cards.
1461 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1463 This module supports multiple cards.
1468 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1470 precise_ptr - Enable precise pointer (doesn't work reliably).
1473 This module supports multiple cards.
1475 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1476 module did formerly. It will allocate the buffers in advance
1477 when any RME9652 cards are found. To make the buffer
1478 allocation sure, load snd-page-alloc module in the early
1479 stage of boot sequence. See "Early Buffer Allocation"
1482 Module snd-sa11xx-uda1341 (on arm only)
1483 ---------------------------------------
1485 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1487 Module supports only one card.
1488 Module has no enable and index options.
1490 The power-management is supported.
1495 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1499 port - port # for SB DSP chip (0x220,0x240,0x260)
1500 irq - IRQ # for SB DSP chip (5,7,9,10)
1501 dma8 - DMA # for SB DSP chip (1,3)
1503 This module supports multiple cards and autoprobe.
1505 The power-management is supported.
1507 Module snd-sb16 and snd-sbawe
1508 -----------------------------
1510 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1511 SoundBlaster AWE 32 (PnP),
1512 SoundBlaster AWE 64 PnP
1514 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1515 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1516 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1517 (snd-sbawe module only)
1518 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1519 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1520 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1521 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1522 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1523 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1525 This module supports multiple cards, autoprobe and ISA PnP.
1527 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1528 disable 16bit DMA with dma16 = -1 module parameter.
1529 Also, all Sound Blaster 16 type cards can operate in 16-bit
1530 half duplex mode through 8-bit DMA channel by disabling their
1533 The power-management is supported.
1538 Module for Aztech Sound Galaxy sound card.
1540 sbport - Port # for SB16 interface (0x220,0x240)
1541 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1542 irq - IRQ # (7,9,10,11)
1545 This module supports multiple cards.
1547 The power-management is supported.
1552 Module for ENSONIQ SoundScape PnP cards.
1554 port - Port # (PnP setup)
1555 irq - IRQ # (PnP setup)
1556 mpu_irq - MPU-401 IRQ # (PnP setup)
1557 dma - DMA # (PnP setup)
1559 This module supports multiple cards. ISA PnP must be enabled.
1560 You need sscape_ctl tool in alsa-tools package for loading
1563 Module snd-sun-amd7930 (on sparc only)
1564 --------------------------------------
1566 Module for AMD7930 sound chips found on Sparcs.
1568 This module supports multiple cards.
1570 Module snd-sun-cs4231 (on sparc only)
1571 -------------------------------------
1573 Module for CS4231 sound chips found on Sparcs.
1575 This module supports multiple cards.
1577 Module snd-sun-dbri (on sparc only)
1578 -----------------------------------
1580 Module for DBRI sound chips found on Sparcs.
1582 This module supports multiple cards.
1584 Module snd-wavefront
1585 --------------------
1587 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1589 cs4232_pcm_port - Port # for CS4232 PCM interface.
1590 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1591 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1592 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1593 use_cs4232_midi - Use CS4232 MPU-401 interface
1594 (inaccessibly located inside your computer)
1595 ics2115_port - Port # for ICS2115
1596 ics2115_irq - IRQ # for ICS2115
1597 fm_port - FM OPL-3 Port #
1598 dma1 - DMA1 # for CS4232 PCM interface.
1599 dma2 - DMA2 # for CS4232 PCM interface.
1600 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1602 This module supports multiple cards and ISA PnP.
1604 Module snd-sonicvibes
1605 ---------------------
1607 Module for S3 SonicVibes PCI sound cards.
1608 * PINE Schubert 32 PCI
1610 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1611 - SoundCard must have onboard SRAM for this.
1612 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1614 This module supports multiple cards and autoprobe.
1616 Module snd-serial-u16550
1617 ------------------------
1619 Module for UART16550A serial MIDI ports.
1621 port - port # for UART16550A chip
1622 irq - IRQ # for UART16550A chip, -1 = poll mode
1623 speed - speed in bauds (9600,19200,38400,57600,115200)
1625 base - base for divisor in bauds (57600,115200,230400,460800)
1627 outs - number of MIDI ports in a serial port (1-4)
1629 adaptor - Type of adaptor.
1630 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1631 3 = MS-124W M/B, 4 = Generic
1633 This module supports multiple cards. This module does not support autoprobe
1634 thus the main port must be specified!!! Other options are optional.
1639 Module for Trident 4DWave DX/NX sound cards.
1640 * Best Union Miss Melody 4DWave PCI
1642 * Warpspeed ONSpeed 4DWave PCI
1645 * CHIC True Sound 4Dwave
1646 * Shark Predator4D-PCI
1647 * Jaton SonicWave 4D
1649 pcm_channels - max channels (voices) reserved for PCM
1650 wavetable_size - max wavetable size in kB (4-?kb)
1652 This module supports multiple cards and autoprobe.
1654 The power-management is supported.
1656 Module snd-usb-audio
1657 --------------------
1659 Module for USB audio and USB MIDI devices.
1661 vid - Vendor ID for the device (optional)
1662 pid - Product ID for the device (optional)
1663 device_setup - Device specific magic number (optional)
1664 - Influence depends on the device
1667 This module supports multiple devices, autoprobe and hotplugging.
1669 Module snd-usb-usx2y
1670 --------------------
1672 Module for Tascam USB US-122, US-224 and US-428 devices.
1674 This module supports multiple devices, autoprobe and hotplugging.
1676 Note: you need to load the firmware via usx2yloader utility included
1677 in alsa-tools and alsa-firmware packages.
1682 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1683 8233A, 8233C, 8235, 8237 (south) bridge.
1685 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1687 joystick - Enable joystick (default off) [VIA686A/686B only]
1688 ac97_clock - AC'97 codec clock base (default 48000Hz)
1689 dxs_support - support DXS channels,
1690 0 = auto (default), 1 = enable, 2 = disable,
1691 3 = 48k only, 4 = no VRA, 5 = enable any sample
1692 rate and different sample rates on different
1694 [VIA8233/C, 8235, 8237 only]
1695 ac97_quirk - AC'97 workaround for strange hardware
1696 See "AC97 Quirk Option" section below.
1698 This module supports one chip and autoprobe.
1700 Note: on some SMP motherboards like MSI 694D the interrupts might
1701 not be generated properly. In such a case, please try to
1702 set the SMP (or MPS) version on BIOS to 1.1 instead of
1703 default value 1.4. Then the interrupt number will be
1704 assigned under 15. You might also upgrade your BIOS.
1706 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1707 channels as the first PCM. On these channels, up to 4
1708 streams can be played at the same time, and the controller
1709 can perform sample rate conversion with separate rates for
1711 As default (dxs_support = 0), 48k fixed rate is chosen
1712 except for the known devices since the output is often
1713 noisy except for 48k on some mother boards due to the
1715 Please try once dxs_support=5 and if it works on other
1716 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1717 know the PCI subsystem vendor/device id's (output of
1719 If dxs_support=5 does not work, try dxs_support=4; if it
1720 doesn't work too, try dxs_support=1. (dxs_support=1 is
1721 usually for old motherboards. The correct implemented
1722 board should work with 4 or 5.) If it still doesn't
1723 work and the default setting is ok, dxs_support=3 is the
1724 right choice. If the default setting doesn't work at all,
1725 try dxs_support=2 to disable the DXS channels.
1726 In any cases, please let us know the result and the
1727 subsystem vendor/device ids. See "Links and Addresses"
1730 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1731 additionally. The mpu_port option is for VIA686 chips only.
1733 The power-management is supported.
1735 Module snd-via82xx-modem
1736 ------------------------
1738 Module for VIA82xx AC97 modem
1740 ac97_clock - AC'97 codec clock base (default 48000Hz)
1742 This module supports one card and autoprobe.
1744 Note: The default index value of this module is -2, i.e. the first
1747 The power-management is supported.
1752 Module for virtual rawmidi devices.
1753 This module creates virtual rawmidi devices which communicate
1754 to the corresponding ALSA sequencer ports.
1756 midi_devs - MIDI devices # (1-4, default=4)
1758 This module supports multiple cards.
1763 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1765 mic - Enable Microphone on V222 Mic (NYI)
1766 ibl - Capture IBL size. (default = 0, minimum size)
1768 This module supports multiple cards.
1770 When the driver is compiled as a module and the hotplug firmware
1771 is supported, the firmware data is loaded via hotplug automatically.
1772 Install the necessary firmware files in alsa-firmware package.
1773 When no hotplug fw loader is available, you need to load the
1774 firmware via vxloader utility in alsa-tools package. To invoke
1775 vxloader automatically, add the following to /etc/modprobe.conf
1777 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1779 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1780 /etc/modules.conf, instead.)
1781 IBL size defines the interrupts period for PCM. The smaller size
1782 gives smaller latency but leads to more CPU consumption, too.
1783 The size is usually aligned to 126. As default (=0), the smallest
1784 size is chosen. The possible IBL values can be found in
1785 /proc/asound/cardX/vx-status proc file.
1787 The power-management is supported.
1792 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
1794 ibl - Capture IBL size. (default = 0, minimum size)
1796 This module supports multiple cards. The module is compiled only when
1797 PCMCIA is supported on kernel.
1799 With the older 2.6.x kernel, to activate the driver via the card
1800 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
1801 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
1802 longer require a config file.
1804 When the driver is compiled as a module and the hotplug firmware
1805 is supported, the firmware data is loaded via hotplug automatically.
1806 Install the necessary firmware files in alsa-firmware package.
1807 When no hotplug fw loader is available, you need to load the
1808 firmware via vxloader utility in alsa-tools package.
1810 About capture IBL, see the description of snd-vx222 module.
1812 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
1815 The power-management is supported.
1820 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
1822 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
1823 1 (auto-detect for YMF744/754 only)
1824 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
1825 1 (auto-detect for YMF744/754 only)
1826 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
1828 rear_switch - enable shared rear/line-in switch (bool)
1830 This module supports autoprobe and multiple chips.
1832 The power-management is supported.
1834 Module snd-pdaudiocf
1835 --------------------
1837 Module for Sound Core PDAudioCF sound card.
1839 The power-management is supported.
1845 The ac97_quirk option is used to enable/override the workaround for
1846 specific devices on drivers for on-board AC'97 controllers like
1847 snd-intel8x0. Some hardware have swapped output pins between Master
1848 and Headphone, or Surround (thanks to confusion of AC'97
1849 specifications from version to version :-)
1851 The driver provides the auto-detection of known problematic devices,
1852 but some might be unknown or wrongly detected. In such a case, pass
1853 the proper value with this option.
1855 The following strings are accepted:
1856 - default Don't override the default setting
1857 - none Disable the quirk
1858 - hp_only Bind Master and Headphone controls as a single control
1859 - swap_hp Swap headphone and master controls
1860 - swap_surround Swap master and surround controls
1861 - ad_sharing For AD1985, turn on OMS bit and use headphone
1862 - alc_jack For ALC65x, turn on the jack sense mode
1863 - inv_eapd Inverted EAPD implementation
1864 - mute_led Bind EAPD bit for turning on/off mute LED
1866 For backward compatibility, the corresponding integer value -1, 0,
1867 ... are accepted, too.
1869 For example, if "Master" volume control has no effect on your device
1870 but only "Headphone" does, pass ac97_quirk=hp_only module option.
1873 Configuring Non-ISAPNP Cards
1874 ============================
1876 When the kernel is configured with ISA-PnP support, the modules
1877 supporting the isapnp cards will have module options "isapnp".
1878 If this option is set, *only* the ISA-PnP devices will be probed.
1879 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
1880 together with the proper i/o and irq configuration.
1882 When the kernel is configured without ISA-PnP support, isapnp option
1883 will be not built in.
1886 Module Autoloading Support
1887 ==========================
1889 The ALSA drivers can be loaded automatically on demand by defining
1890 module aliases. The string 'snd-card-%1' is requested for ALSA native
1891 devices where %i is sound card number from zero to seven.
1893 To auto-load an ALSA driver for OSS services, define the string
1894 'sound-slot-%i' where %i means the slot number for OSS, which
1895 corresponds to the card index of ALSA. Usually, define this
1896 as the same card module.
1898 An example configuration for a single emu10k1 card is like below:
1899 ----- /etc/modprobe.conf
1900 alias snd-card-0 snd-emu10k1
1901 alias sound-slot-0 snd-emu10k1
1902 ----- /etc/modprobe.conf
1904 The available number of auto-loaded sound cards depends on the module
1905 option "cards_limit" of snd module. As default it's set to 1.
1906 To enable the auto-loading of multiple cards, specify the number of
1907 sound cards in that option.
1909 When multiple cards are available, it'd better to specify the index
1910 number for each card via module option, too, so that the order of
1911 cards is kept consistent.
1913 An example configuration for two sound cards is like below:
1915 ----- /etc/modprobe.conf
1917 options snd cards_limit=2
1918 alias snd-card-0 snd-interwave
1919 alias snd-card-1 snd-ens1371
1920 options snd-interwave index=0
1921 options snd-ens1371 index=1
1923 alias sound-slot-0 snd-interwave
1924 alias sound-slot-1 snd-ens1371
1925 ----- /etc/modprobe.conf
1927 In this example, the interwave card is always loaded as the first card
1928 (index 0) and ens1371 as the second (index 1).
1931 ALSA PCM devices to OSS devices mapping
1932 =======================================
1934 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
1935 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
1936 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
1937 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
1938 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
1939 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
1940 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
1941 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
1942 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
1944 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
1945 sound card number and second means device number. The ALSA devices
1946 have either 'c' or 'p' suffix indicating the direction, capture and
1947 playback, respectively.
1949 Please note that the device mapping above may be varied via the module
1950 options of snd-pcm-oss module.
1953 Proc interfaces (/proc/asound)
1954 ==============================
1956 /proc/asound/card#/pcm#[cp]/oss
1957 -------------------------------
1958 String "erase" - erase all additional informations about OSS applications
1959 String "<app_name> <fragments> <fragment_size> [<options>]"
1961 <app_name> - name of application with (higher priority) or without path
1962 <fragments> - number of fragments or zero if auto
1963 <fragment_size> - size of fragment in bytes or zero if auto
1964 <options> - optional parameters
1965 - disable the application tries to open a pcm device for
1966 this channel but does not want to use it.
1967 (Cause a bug or mmap needs)
1968 It's good for Quake etc...
1969 - direct don't use plugins
1970 - block force block mode (rvplayer)
1971 - non-block force non-block mode
1972 - whole-frag write only whole fragments (optimization affecting
1974 - no-silence do not fill silence ahead to avoid clicks
1975 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
1976 instead of filled blocks
1978 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
1979 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
1980 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
1983 Early Buffer Allocation
1984 =======================
1986 Some drivers (e.g. hdsp) require the large contiguous buffers, and
1987 sometimes it's too late to find such spaces when the driver module is
1988 actually loaded due to memory fragmentation. You can pre-allocate the
1989 PCM buffers by loading snd-page-alloc module and write commands to its
1990 proc file in prior, for example, in the early boot stage like
1991 /etc/init.d/*.local scripts.
1993 Reading the proc file /proc/drivers/snd-page-alloc shows the current
1994 usage of page allocation. In writing, you can send the following
1995 commands to the snd-page-alloc driver:
1997 - add VENDOR DEVICE MASK SIZE BUFFERS
1999 VENDOR and DEVICE are PCI vendor and device IDs. They take
2000 integer numbers (0x prefix is needed for the hex).
2001 MASK is the PCI DMA mask. Pass 0 if not restricted.
2002 SIZE is the size of each buffer to allocate. You can pass
2003 k and m suffix for KB and MB. The max number is 16MB.
2004 BUFFERS is the number of buffers to allocate. It must be greater
2005 than 0. The max number is 4.
2009 This will erase the all pre-allocated buffers which are not in
2016 ALSA project homepage
2017 http://www.alsa-project.org
2019 ALSA Bug Tracking System
2020 https://bugtrack.alsa-project.org/bugs/
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