2 Advanced Linux Sound Architecture - Driver
3 ==========================================
10 To enable ALSA support you need at least to build the kernel with
11 primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,
12 you don't have to choose any of the OSS modules.
14 Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
15 PCM supports if you want to run OSS applications with ALSA.
17 If you want to support the WaveTable functionality on cards such as
18 SB Live! then you need to enable "Sequencer support"
19 (CONFIG_SND_SEQUENCER).
21 To make ALSA debug messages more verbose, enable the "Verbose printk"
22 and "Debug" options. To check for memory leaks, turn on "Debug memory"
23 too. "Debug detection" will add checks for the detection of cards.
25 Please note that all the ALSA ISA drivers support the Linux isapnp API
26 (if the card supports ISA PnP). You don't need to configure the cards
33 This depends on your distribution, but normally you use the /dev/MAKEDEV
34 script to create the necessary device nodes. On some systems you use a
35 script named 'snddevices'.
41 The user can load modules with options. If the module supports more than
42 one card and you have more than one card of the same type then you can
43 specify multiple values for the option separated by commas.
45 Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
50 The core ALSA module. It is used by all ALSA card drivers.
51 It takes the following options which have global effects.
53 major - major number for sound driver
56 - limiting card index for auto-loading (1-8)
58 - For auto-loading more than one card, specify this
59 option together with snd-card-X aliases.
60 slots - Reserve the slot index for the given driver.
61 This option takes multiple strings.
62 See "Module Autoloading Support" section for details.
67 The PCM OSS emulation module.
68 This module takes options which change the mapping of devices.
70 dsp_map - PCM device number maps assigned to the 1st OSS device.
72 adsp_map - PCM device number maps assigned to the 2st OSS device.
75 - Don't block opening busy PCM devices. Default: 1
77 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
78 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
79 to PCM #0 of the card #0.
80 For changing the second or later card, specify the option with
81 commas, such like "dsp_map=0,1".
83 nonblock_open option is used to change the behavior of the PCM
84 regarding opening the device. When this option is non-zero,
85 opening a busy OSS PCM device won't be blocked but return
86 immediately with EAGAIN (just like O_NONBLOCK flag).
91 This module takes options which change the mapping of devices.
92 similar to those of the snd-pcm-oss module.
94 midi_map - MIDI device number maps assigned to the 1st OSS device.
96 amidi_map - MIDI device number maps assigned to the 2st OSS device.
99 Common parameters for top sound card modules
100 --------------------------------------------
102 Each of top level sound card module takes the following options.
104 index - index (slot #) of sound card
105 - Values: 0 through 31 or negative
106 - If nonnegative, assign that index number
107 - if negative, interpret as a bitmask of permissible
108 indices; the first free permitted index is assigned
110 id - card ID (identifier or name)
111 - Can be up to 15 characters long
112 - Default: the card type
113 - A directory by this name is created under /proc/asound/
114 containing information about the card
115 - This ID can be used instead of the index number in
118 - Default: enabled, for PCI and ISA PnP cards
123 Module for AdLib FM cards.
125 port - port # for OPL chip
127 This module supports multiple cards. It does not support autoprobe, so
128 the port must be specified. For actual AdLib FM cards it will be 0x388.
129 Note that this card does not have PCM support and no mixer; only FM
132 Make sure you have "sbiload" from the alsa-tools package available and,
133 after loading the module, find out the assigned ALSA sequencer port
134 number through "sbiload -l". Example output:
136 Port Client name Port name
137 64:0 OPL2 FM synth OPL2 FM Port
139 Load the std.sb and drums.sb patches also supplied by sbiload:
141 sbiload -p 64:0 std.sb drums.sb
143 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
144 instead. To have the card produce sound, use aplaymidi from alsa-utils:
146 aplaymidi -p 64:0 foo.mid
151 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
153 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
155 This module supports multiple cards, autoprobe and PnP.
160 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
162 port - port # for AD1848 chip
163 irq - IRQ # for AD1848 chip
164 dma1 - DMA # for AD1848 chip (0,1,3)
166 This module supports multiple cards. It does not support autoprobe
167 thus main port must be specified!!! Other ports are optional.
169 The power-management is supported.
174 Module for Analog Devices AD1889 chips.
176 ac97_quirk - AC'97 workaround for strange hardware
177 See the description of intel8x0 module for details.
179 This module supports multiple cards.
184 Module for ALi M5451 PCI chip.
186 pcm_channels - Number of hardware channels assigned for PCM
187 spdif - Support SPDIF I/O
190 This module supports one chip and autoprobe.
192 The power-management is supported.
197 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
199 This module supports multiple cards, autoprobe and PnP.
201 The power-management is supported.
206 Module for Avance Logic ALS300 and ALS300+
208 This module supports multiple cards.
210 The power-management is supported.
215 Module for sound cards based on Avance Logic ALS4000 PCI chip.
217 joystick_port - port # for legacy joystick support.
218 0 = disabled (default), 1 = auto-detect
220 This module supports multiple cards, autoprobe and PnP.
222 The power-management is supported.
227 Module for ATI IXP 150/200/250/400 AC97 controllers.
229 ac97_clock - AC'97 clock (default = 48000)
230 ac97_quirk - AC'97 workaround for strange hardware
231 See "AC97 Quirk Option" section below.
232 ac97_codec - Workaround to specify which AC'97 codec
233 instead of probing. If this works for you
234 file a bug with your `lspci -vn` output.
236 -1 -- Default behavior.
237 0-2 -- Use the specified codec.
238 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
240 This module supports one card and autoprobe.
242 ATI IXP has two different methods to control SPDIF output. One is
243 over AC-link and another is over the "direct" SPDIF output. The
244 implementation depends on the motherboard, and you'll need to
245 choose the correct one via spdif_aclink module option.
247 The power-management is supported.
249 Module snd-atiixp-modem
250 -----------------------
252 Module for ATI IXP 150/200/250 AC97 modem controllers.
254 This module supports one card and autoprobe.
256 Note: The default index value of this module is -2, i.e. the first
259 The power-management is supported.
261 Module snd-au8810, snd-au8820, snd-au8830
262 -----------------------------------------
264 Module for Aureal Vortex, Vortex2 and Advantage device.
266 pcifix - Control PCI workarounds
267 0 = Disable all workarounds
268 1 = Force the PCI latency of the Aureal card to 0xff
269 2 = Force the Extend PCI#2 Internal Master for Efficient
270 Handling of Dummy Requests on the VIA KT133 AGP Bridge
271 3 = Force both settings
272 255 = Autodetect what is required (default)
274 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
275 EQ, mpu401, gameport. A3D and wavetable support are still in development.
276 Development and reverse engineering work is being coordinated at
277 http://savannah.nongnu.org/projects/openvortex/
278 SPDIF output has a copy of the AC97 codec output, unless you use the
279 "spdif" pcm device, which allows raw data passthru.
280 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
283 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
284 control correctly. If you have problems regarding this, try
285 another ALSA compliant mixer (alsamixer works).
290 Module for Audiowerk2 sound card
292 This module supports multiple cards.
297 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
299 This module supports multiple cards, PnP and autoprobe.
301 The power-management is supported.
306 Module for sound cards based on Aztech AZF3328 PCI chip.
308 joystick - Enable joystick (default off)
310 This module supports multiple cards.
315 Module for video cards based on Bt87x chips.
317 digital_rate - Override the default digital rate (Hz)
318 load_all - Load the driver even if the card model isn't known
320 This module supports multiple cards.
322 Note: The default index value of this module is -2, i.e. the first
328 Module for Creative Audigy LS and SB Live 24bit
330 This module supports multiple cards.
336 Module for sound cards based on C-Media CMI8330 ISA chips.
338 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
340 with isapnp=0, the following options are available:
342 wssport - port # for CMI8330 chip (WSS)
343 wssirq - IRQ # for CMI8330 chip (WSS)
344 wssdma - first DMA # for CMI8330 chip (WSS)
345 sbport - port # for CMI8330 chip (SB16)
346 sbirq - IRQ # for CMI8330 chip (SB16)
347 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
348 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
350 This module supports multiple cards and autoprobe.
352 The power-management is supported.
357 Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
359 mpu_port - port address of MIDI interface (8338 only):
360 0x300,0x310,0x320,0x330 = legacy port,
361 0 = disable (default)
362 fm_port - port address of OPL-3 FM synthesizer (8x38 only):
364 1 = integrated PCI port (default on 8738),
366 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
368 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
370 This module supports autoprobe and multiple cards.
372 The power-management is supported.
377 Module for sound cards based on CS4231 ISA chips.
379 port - port # for CS4231 chip
380 mpu_port - port # for MPU-401 UART (optional), -1 = disable
381 irq - IRQ # for CS4231 chip
382 mpu_irq - IRQ # for MPU-401 UART
383 dma1 - first DMA # for CS4231 chip
384 dma2 - second DMA # for CS4231 chip
386 This module supports multiple cards. This module does not support autoprobe
387 thus main port must be specified!!! Other ports are optional.
389 The power-management is supported.
394 Module for sound cards based on CS4232/CS4232A ISA chips.
396 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
398 with isapnp=0, the following options are available:
400 port - port # for CS4232 chip (PnP setup - 0x534)
401 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
402 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
403 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
404 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
405 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
406 dma1 - first DMA # for CS4232 chip (0,1,3)
407 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
409 This module supports multiple cards. This module does not support autoprobe
410 (if ISA PnP is not used) thus main port must be specified!!! Other ports are
413 The power-management is supported.
418 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
419 CS4238B/CS4239 ISA chips.
421 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
423 with isapnp=0, the following options are available:
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
434 This module supports multiple cards. This module does not support autoprobe
435 (if ISA PnP is not used) thus main port and control port must be
436 specified!!! Other ports are optional.
438 The power-management is supported.
443 Module for Cirrus Logic CS4281 soundchip.
445 dual_codec - Secondary codec ID (0 = disable, default)
447 This module supports multiple cards.
449 The power-management is supported.
454 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
455 CS4624/CS4630/CS4280 PCI chips.
457 external_amp - Force to enable external amplifier.
458 thinkpad - Force to enable Thinkpad's CLKRUN control.
459 mmap_valid - Support OSS mmap mode (default = 0).
461 This module supports multiple cards and autoprobe.
462 Usually external amp and CLKRUN controls are detected automatically
463 from PCI sub vendor/device ids. If they don't work, give the options
466 The power-management is supported.
471 Module for Cyrix/NatSemi Geode 5530 chip.
473 Module snd-cs5535audio
474 ----------------------
476 Module for multifunction CS5535 companion PCI device
478 The power-management is supported.
483 Module for Echoaudio Darla20
485 This module supports multiple cards.
486 The driver requires the firmware loader support on kernel.
491 Module for Echoaudio Darla24
493 This module supports multiple cards.
494 The driver requires the firmware loader support on kernel.
499 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
502 This module supports multiple cards. This module is enabled only with
505 The power-management is supported.
510 Module for the dummy sound card. This "card" doesn't do any output
511 or input, but you may use this module for any application which
512 requires a sound card (like RealPlayer).
514 The power-management is supported.
519 Module for Echoaudio 3G cards (Gina3G/Layla3G)
521 This module supports multiple cards.
522 The driver requires the firmware loader support on kernel.
527 Module for EMU10K1/EMU10k2 based PCI sound cards.
528 * Sound Blaster Live!
529 * Sound Blaster PCI 512
530 * Emu APS (partially supported)
531 * Sound Blaster Audigy
533 extin - bitmap of available external inputs for FX8010 (see bellow)
534 extout - bitmap of available external outputs for FX8010 (see bellow)
535 seq_ports - allocated sequencer ports (4 by default)
536 max_synth_voices - limit of voices used for wavetable (64 by default)
537 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
538 given in MB unit. Default value is 128.
539 enable_ir - enable IR
541 This module supports multiple cards and autoprobe.
543 Input & Output configurations [extin/extout]
544 * Creative Card wo/Digital out [0x0003/0x1f03]
545 * Creative Card w/Digital out [0x0003/0x1f0f]
546 * Creative Card w/Digital CD in [0x000f/0x1f0f]
547 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
548 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
549 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
550 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
551 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
552 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
553 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
554 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
555 * Creative Card all ins and outs [0x3fff/0x7fff]
557 The power-management is supported.
562 Module for Creative Emu10k1X (SB Live Dell OEM version)
564 This module supports multiple cards.
569 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
570 * SoundBlaster PCI 64
571 * SoundBlaster PCI 128
573 joystick - Enable joystick (default off)
575 This module supports multiple cards and autoprobe.
577 The power-management is supported.
582 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
583 * SoundBlaster PCI 64
584 * SoundBlaster PCI 128
585 * SoundBlaster Vibra PCI
587 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
588 0 = disable (default), 1 = auto-detect
590 This module supports multiple cards and autoprobe.
592 The power-management is supported.
597 Module for sound cards based on ESS ES968 chip (PnP only).
599 This module supports multiple cards, PnP and autoprobe.
601 The power-management is supported.
606 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
608 port - port # for ES-1688 chip (0x220,0x240,0x260)
609 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
610 irq - IRQ # for ES-1688 chip (5,7,9,10)
611 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
612 dma8 - DMA # for ES-1688 chip (0,1,3)
614 This module supports multiple cards and autoprobe (without MPU-401 port).
619 Module for ESS AudioDrive ES-18xx sound cards.
621 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
623 with isapnp=0, the following options are available:
625 port - port # for ES-18xx chip (0x220,0x240,0x260)
626 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
627 fm_port - port # for FM (optional, not used)
628 irq - IRQ # for ES-18xx chip (5,7,9,10)
629 dma1 - first DMA # for ES-18xx chip (0,1,3)
630 dma2 - first DMA # for ES-18xx chip (0,1,3)
632 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
633 port if native ISA PnP routines are not used).
634 When dma2 is equal with dma1, the driver works as half-duplex.
636 The power-management is supported.
641 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
643 This module supports multiple cards and autoprobe.
645 The power-management is supported.
650 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
652 total_bufsize - total buffer size in kB (1-4096kB)
653 pcm_substreams_p - playback channels (1-8, default=2)
654 pcm_substreams_c - capture channels (1-8, default=0)
655 clock - clock (0 = auto-detection)
656 use_pm - support the power-management (0 = off, 1 = on,
658 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
659 joystick - enable joystick (default off)
661 This module supports multiple cards and autoprobe.
663 The power-management is supported.
668 Module for ForteMedia FM801 based PCI sound cards.
670 tea575x_tuner - Enable TEA575x tuner
671 - 1 = MediaForte 256-PCS
672 - 2 = MediaForte 256-PCPR
673 - 3 = MediaForte 64-PCR
674 - High 16-bits are video (radio) device number + 1
675 - example: 0x10002 (MediaForte 256-PCPR, device 1)
677 This module supports multiple cards and autoprobe.
679 The power-management is supported.
684 Module for Echoaudio Gina20
686 This module supports multiple cards.
687 The driver requires the firmware loader support on kernel.
692 Module for Echoaudio Gina24
694 This module supports multiple cards.
695 The driver requires the firmware loader support on kernel.
697 Module snd-gusclassic
698 ---------------------
700 Module for Gravis UltraSound Classic sound card.
702 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
703 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
704 dma1 - DMA # for GF1 chip (1,3,5,6,7)
705 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
706 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
707 voices - GF1 voices limit (14-32)
708 pcm_voices - reserved PCM voices
710 This module supports multiple cards and autoprobe.
712 Module snd-gusextreme
713 ---------------------
715 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
717 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
718 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
719 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
720 irq - IRQ # for ES-1688 chip (5,7,9,10)
721 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
722 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
723 dma8 - DMA # for ES-1688 chip (0,1,3)
724 dma1 - DMA # for GF1 chip (1,3,5,6,7)
725 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
726 voices - GF1 voices limit (14-32)
727 pcm_voices - reserved PCM voices
729 This module supports multiple cards and autoprobe (without MPU-401 port).
734 Module for Gravis UltraSound MAX sound card.
736 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
737 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
738 dma1 - DMA # for GF1 chip (1,3,5,6,7)
739 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
740 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
741 voices - GF1 voices limit (14-32)
742 pcm_voices - reserved PCM voices
744 This module supports multiple cards and autoprobe.
749 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8, ICH9, ICH10,
751 ATI SB450, SB600, R600, RS600, RS690, RS780, RV610, RV620,
752 RV630, RV635, RV670, RV770,
756 [Multiple options for each card instance]
757 model - force the model name
758 position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF)
759 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
760 bdl_pos_adj - Specifies the DMA IRQ timing delay in samples.
761 Passing -1 will make the driver to choose the appropriate
762 value based on the controller chip.
764 [Single (global) options]
765 single_cmd - Use single immediate commands to communicate with
766 codecs (for debugging only)
767 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
768 power_save - Automatic power-saving timtout (in second, 0 =
770 power_save_controller - Reset HD-audio controller in power-saving mode
773 This module supports multiple cards and autoprobe.
775 Each codec may have a model table for different configurations.
776 If your machine isn't listed there, the default (usually minimal)
777 configuration is set up. You can pass "model=<name>" option to
778 specify a certain model in such a case. There are different
779 models depending on the codec chip.
781 See Documentation/sound/alsa/HD-Audio.txt for some details.
783 Model name Description
784 ---------- -----------
786 3stack 3-jack in back and a headphone out
787 3stack-digout 3-jack in back, a HP out and a SPDIF out
788 5stack 5-jack in back, 2-jack in front
789 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
790 6stack 6-jack in back, 2-jack in front
791 6stack-digout 6-jack with a SPDIF out
793 z71v 3-jack (HP shared SPDIF)
794 asus 3-jack (ASUS Mobo)
796 asus-dig ASUS with SPDIF out
797 asus-dig2 ASUS with SPDIF out (using GPIO2)
799 fujitsu Fujitsu Laptops (Pi1536)
801 lg LG laptop (m1 express dual)
802 lg-lw LG LW20/LW25 laptop
804 clevo Clevo laptops (m520G, m665n)
805 medion Medion Rim 2150
806 test for testing/debugging purpose, almost all controls can be
807 adjusted. Appearing only when compiled with
809 auto auto-config reading BIOS (default)
813 hp-3013 HP machines (3013-variant)
815 fujitsu Fujitsu S7020
817 will Will laptops (PB V7900)
818 replacer Replacer 672V
819 basic fixed pin assignment (old default model)
820 test for testing/debugging purpose, almost all controls can
821 adjusted. Appearing only when compiled with
823 auto auto-config reading BIOS (default)
826 fujitsu Fujitsu Laptop
827 hp-bpc HP xw4400/6400/8400/9400 laptops
828 hp-bpc-d7000 HP BPC D7000
829 hp-tc-t5735 HP Thin Client T5735
833 hippo Hippo (ATI) with jack detection, Sony UX-90s
834 hippo_1 Hippo (Benq) with jack detection
835 sony-assamd Sony ASSAMD
836 toshiba-s06 Toshiba S06
837 toshiba-rx1 Toshiba RX1
838 ultra Samsung Q1 Ultra Vista model
839 lenovo-3000 Lenovo 3000 y410
841 basic fixed pin assignment w/o SPDIF
842 auto auto-config reading BIOS (default)
845 quanta-il1 Quanta IL1 mini-notebook
849 acer-dmic Acer laptops with digital-mic
850 acer-aspire Acer Aspire One
851 dell Dell OEM laptops (Vostro 1200)
853 test for testing/debugging purpose, almost all controls can
854 adjusted. Appearing only when compiled with
856 auto auto-config reading BIOS (default)
861 eeepc-p703 ASUS Eeepc P703 P900A
862 eeepc-p901 ASUS Eeepc P901 S101
864 auto auto-config reading BIOS (default)
867 3stack-dig 3-stack (2-channel) with SPDIF
868 3stack-6ch 3-stack (6-channel)
869 3stack-6ch-dig 3-stack (6-channel) with SPDIF
870 6stack-dig 6-stack with SPDIF
871 lenovo-101e Lenovo laptop
872 eeepc-p701 ASUS Eeepc P701
873 eeepc-ep20 ASUS Eeepc EP20
885 auto auto-config reading BIOS (default)
888 3stack-dig 3-jack with SPDIF I/O
889 6stack-dig 6-jack digital with SPDIF I/O
891 targa Targa T8, MSI-1049 T8
894 macpro MacPro support
895 mbp3 Macbook Pro rev3
896 imac24 iMac 24'' with jack detection
898 auto auto-config reading BIOS (default)
901 3stack-dig 3-jack with SPDIF I/O
902 6stack-dig 6-jack digital with SPDIF I/O
903 3stack-6ch 3-jack 6-channel
904 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
905 6stack-dig-demo 6-jack digital for Intel demo board
906 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
907 acer-aspire Acer Aspire 9810
908 acer-aspire-4930g Acer Aspire 4930G
909 medion Medion Laptops
910 medion-md2 Medion MD2
912 targa-2ch-dig Targs/MSI with 2-channel
913 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
914 lenovo-101e Lenovo 101E
915 lenovo-nb0763 Lenovo NB0763
916 lenovo-ms7195-dig Lenovo MS7195
917 lenovo-sky Lenovo Sky
919 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
920 6stack-dell Dell machines with 6stack (Inspiron 530)
922 clevo-m720 Clevo M720 laptop series
923 fujitsu-pi2515 Fujitsu AMILO Pi2515
924 fujitsu-xa3530 Fujitsu AMILO XA3530
925 3stack-6ch-intel Intel DG33* boards
926 auto auto-config reading BIOS (default)
930 3stack-dig 3-jack with SPDIF I/O
931 6stack-dig 6-jack with SPDIF I/O
932 3stack-660 3-jack (for ALC660)
933 uniwill-m31 Uniwill M31 laptop
934 toshiba Toshiba laptop support
935 asus Asus laptop support
936 asus-laptop ASUS F2/F3 laptops
937 auto auto-config reading BIOS (default)
941 3stack-dig 3-jack with SPDIF OUT
942 6stack-dig 6-jack with SPDIF OUT
943 3stack-660 3-jack (for ALC660VD)
944 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
945 lenovo Lenovo 3000 C200
946 dallas Dallas laptops
949 auto auto-config reading BIOS (default)
952 minimal 3-jack in back
953 min_fp 3-jack in back, 2-jack in front
954 full 6-jack in back, 2-jack in front
955 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
956 allout 5-jack in back, 2-jack in front, SPDIF out
957 auto auto-config reading BIOS (default)
960 3stack 3-stack mode (default)
963 AD1884A / AD1883 / AD1984A / AD1984B
964 desktop 3-stack desktop (default)
965 laptop laptop with HP jack sensing
966 mobile mobile devices with HP jack sensing
967 thinkpad Lenovo Thinkpad X300
973 basic 3-jack (default)
975 thinkpad Lenovo Thinkpad T60/X60/Z60
982 basic default configuration
983 thinkpad Lenovo Thinkpad T61/X61
987 6stack 6-jack, separate surrounds (default)
988 3stack 3-stack, shared surrounds
989 laptop 2-channel only (FSC V2060, Samsung M50)
990 laptop-eapd 2-channel with EAPD (ASUS A6J)
991 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
992 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
993 samsung 2-channel with EAPD (Samsung R65)
995 AD1988/AD1988B/AD1989A/AD1989B
997 6stack-dig ditto with SPDIF
999 3stack-dig ditto with SPDIF
1000 laptop 3-jack with hp-jack automute
1001 laptop-dig ditto with SPDIF
1002 auto auto-config reading BIOS (default)
1005 laptop-hpsense Laptop with HP sense (old model laptop)
1006 laptop-micsense Laptop with Mic sense (old model fujitsu)
1007 laptop-hpmicsense Laptop with HP and Mic senses
1009 test for testing/debugging purpose, almost all controls
1010 can be adjusted. Appearing only when compiled with
1014 laptop Basic Laptop config
1015 laptop-hp Laptop config for some HP models (subdevice 30A5)
1016 laptop-eapd Laptop config with EAPD support
1017 test for testing/debugging purpose, almost all controls
1018 can be adjusted. Appearing only when compiled with
1022 laptop Basic Laptop config (default)
1023 hp HP Spartan laptop
1027 dell-d21 Dell (unknown)
1028 dell-d22 Dell (unknown)
1029 dell-d23 Dell (unknown)
1030 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
1031 dell-m22 Dell Latitude D620, Dell Latitude D820
1032 dell-m23 Dell XPS M1710, Dell Precision M90
1033 dell-m24 Dell Latitude 120L
1034 dell-m25 Dell Inspiron E1505n
1035 dell-m26 Dell Inspiron 1501
1036 dell-m27 Dell Inspiron E1705/9400
1037 gateway Gateway laptops with EAPD control
1038 panasonic Panasonic CF-74
1042 dell-m42 Dell (unknown)
1043 dell-m43 Dell Precision
1044 dell-m44 Dell Inspiron
1049 5stack D945 5stack + SPDIF
1050 intel-mac-v1 Intel Mac Type 1
1051 intel-mac-v2 Intel Mac Type 2
1052 intel-mac-v3 Intel Mac Type 3
1053 intel-mac-v4 Intel Mac Type 4
1054 intel-mac-v5 Intel Mac Type 5
1055 intel-mac-auto Intel Mac (detect type according to subsystem id)
1056 macmini Intel Mac Mini (equivalent with type 3)
1057 macbook Intel Mac Book (eq. type 5)
1058 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1059 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1060 imac-intel Intel iMac (eq. type 2)
1061 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1062 dell-d81 Dell (unknown)
1063 dell-d82 Dell (unknown)
1064 dell-m81 Dell (unknown)
1065 dell-m82 Dell XPS M1210
1068 ref Reference board, base config
1069 m2-2 Some Gateway MX series laptops
1070 m6 Some Gateway NX series laptops
1071 pa6 Gateway NX860 series
1073 STAC9227/9228/9229/927x
1075 ref-no-jd Reference board without HP/Mic jack detection
1077 5stack D965 5stack + SPDIF
1078 dell-3stack Dell Dimension E520
1079 dell-bios Fixes with Dell BIOS setup
1083 dell-m4-1 Dell desktops
1084 dell-m4-2 Dell desktops
1085 dell-m4-3 Dell desktops
1089 no-jd BIOS setup but without jack-detection
1090 dell-m6-amic Dell desktops/laptops with analog mics
1091 dell-m6-dmic Dell desktops/laptops with digital mics
1092 dell-m6 Dell desktops/laptops with both type of mics
1095 vaio Setup for VAIO FE550G/SZ110
1096 vaio-ar Setup for VAIO AR
1098 The model name "genric" is treated as a special case. When this
1099 model is given, the driver uses the generic codec parser without
1100 "codec-patch". It's sometimes good for testing and debugging.
1102 If the default configuration doesn't work and one of the above
1103 matches with your device, report it together with alsa-info.sh
1104 output (with --no-upload option) to kernel bugzilla or alsa-devel
1105 ML (see the section "Links and Addresses").
1107 power_save and power_save_controller options are for power-saving
1108 mode. See powersave.txt for details.
1110 Note 2: If you get click noises on output, try the module option
1111 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1112 register value without FIFO size correction as the current
1113 DMA pointer. position_fix=2 will make the driver to use
1114 the position buffer instead of reading SD_LPIB register.
1115 (Usually SD_LPIB register is more accurate than the
1118 NB: If you get many "azx_get_response timeout" messages at
1119 loading, it's likely a problem of interrupts (e.g. ACPI irq
1120 routing). Try to boot with options like "pci=noacpi". Also, you
1121 can try "single_cmd=1" module option. This will switch the
1122 communication method between HDA controller and codecs to the
1123 single immediate commands instead of CORB/RIRB. Basically, the
1124 single command mode is provided only for BIOS, and you won't get
1125 unsolicited events, too. But, at least, this works independently
1126 from the irq. Remember this is a last resort, and should be
1127 avoided as much as possible...
1129 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1130 On some hardwares, you may need to add a proper probe_mask option
1131 to avoid the "azx_get_response timeout" problem above, instead.
1132 This occurs when the access to non-existing or non-working codec slot
1133 (likely a modem one) causes a stall of the communication via HD-audio
1134 bus. You can see which codec slots are probed by enabling
1135 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1136 proc files. Then limit the slots to probe by probe_mask option.
1137 For example, probe_mask=1 means to probe only the first slot, and
1138 probe_mask=4 means only the third slot.
1140 The power-management is supported.
1145 Module for RME Hammerfall DSP audio interface(s)
1147 This module supports multiple cards.
1149 Note: The firmware data can be automatically loaded via hotplug
1150 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1151 the firmware via hdsploader utility included in alsa-tools
1153 The firmware data is found in alsa-firmware package.
1155 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1156 module did formerly. It will allocate the buffers in advance
1157 when any HDSP cards are found. To make the buffer
1158 allocation sure, load snd-page-alloc module in the early
1159 stage of boot sequence. See "Early Buffer Allocation"
1165 Module for RME HDSP MADI board.
1167 precise_ptr - Enable precise pointer, or disable.
1168 line_outs_monitor - Send playback streams to analog outs by default.
1169 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1171 See hdspm.txt for details.
1176 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1178 This module supports autoprobe and multiple cards.
1183 Module for Envy24 (ICE1712) based PCI sound cards.
1184 * MidiMan M Audio Delta 1010
1185 * MidiMan M Audio Delta 1010LT
1186 * MidiMan M Audio Delta DiO 2496
1187 * MidiMan M Audio Delta 66
1188 * MidiMan M Audio Delta 44
1189 * MidiMan M Audio Delta 410
1190 * MidiMan M Audio Audiophile 2496
1193 * TerraTec EWX 24/96
1194 * TerraTec DMX 6Fire
1196 * Hoontech SoundTrack DSP 24
1197 * Hoontech SoundTrack DSP 24 Value
1198 * Hoontech SoundTrack DSP 24 Media 7.1
1199 * Event Electronics, EZ8
1201 * Lionstracs, Mediastaton
1204 model - Use the given board model, one of the following:
1205 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1206 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1207 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1208 phase88, mediastation
1209 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1210 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1211 in msec resolution, default value is 500 (0.5 sec)
1213 This module supports multiple cards and autoprobe. Note: The consumer part
1214 is not used with all Envy24 based cards (for example in the MidiMan Delta
1217 Note: The supported board is detected by reading EEPROM or PCI
1218 SSID (if EEPROM isn't available). You can override the
1219 model by passing "model" module option in case that the
1220 driver isn't configured properly or you want to try another
1226 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1227 * MidiMan M Audio Revolution 5.1
1228 * MidiMan M Audio Revolution 7.1
1229 * MidiMan M Audio Audiophile 192
1231 * TerraTec Aureon 5.1 Sky
1232 * TerraTec Aureon 7.1 Space
1233 * TerraTec Aureon 7.1 Universe
1236 * AudioTrak Prodigy 7.1
1237 * AudioTrak Prodigy 7.1 LT
1238 * AudioTrak Prodigy 7.1 XT
1239 * AudioTrak Prodigy 7.1 HIFI
1240 * AudioTrak Prodigy 7.1 HD2
1241 * AudioTrak Prodigy 192
1243 * Albatron K8X800 Pro II
1244 * Chaintech ZNF3-150
1245 * Chaintech ZNF3-250
1252 * Hercules Fortissimo IV
1253 * EGO-SYS WaveTerminal 192M
1255 model - Use the given board model, one of the following:
1256 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1257 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1258 juli, aureon51, aureon71, universe, ap192, k8x800,
1259 phase22, phase28, ms300, av710, se200pci, se90pci,
1260 fortissimo4, sn25p, WT192M
1262 This module supports multiple cards and autoprobe.
1264 Note: The supported board is detected by reading EEPROM or PCI
1265 SSID (if EEPROM isn't available). You can override the
1266 model by passing "model" module option in case that the
1267 driver isn't configured properly or you want to try another
1273 Module for Echoaudio Indigo
1275 This module supports multiple cards.
1276 The driver requires the firmware loader support on kernel.
1281 Module for Echoaudio Indigo DJ
1283 This module supports multiple cards.
1284 The driver requires the firmware loader support on kernel.
1289 Module for Echoaudio Indigo IO
1291 This module supports multiple cards.
1292 The driver requires the firmware loader support on kernel.
1297 Module for AC'97 motherboards from Intel and compatibles.
1298 * Intel i810/810E, i815, i820, i830, i84x, MX440
1299 ICH5, ICH6, ICH7, 6300ESB, ESB2
1300 * SiS 7012 (SiS 735)
1301 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1303 * AMD AMD768, AMD8111
1306 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1307 ac97_quirk - AC'97 workaround for strange hardware
1308 See "AC97 Quirk Option" section below.
1309 buggy_irq - Enable workaround for buggy interrupts on some
1310 motherboards (default yes on nForce chips,
1312 buggy_semaphore - Enable workaround for hardwares with buggy
1313 semaphores (e.g. on some ASUS laptops)
1315 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1316 from the controller chip
1317 (0 = off, 1 = on, -1 = default)
1319 This module supports one chip and autoprobe.
1321 Note: the latest driver supports auto-detection of chip clock.
1322 if you still encounter too fast playback, specify the clock
1323 explicitly via the module option "ac97_clock=41194".
1325 Joystick/MIDI ports are not supported by this driver. If your
1326 motherboard has these devices, use the ns558 or snd-mpu401
1327 modules, respectively.
1329 The power-management is supported.
1331 Module snd-intel8x0m
1332 --------------------
1334 Module for Intel ICH (i8x0) chipset MC97 modems.
1335 * Intel i810/810E, i815, i820, i830, i84x, MX440
1337 * SiS 7013 (SiS 735)
1338 * NVidia NForce, NForce2, NForce2s, NForce3
1342 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1344 This module supports one card and autoprobe.
1346 Note: The default index value of this module is -2, i.e. the first
1349 The power-management is supported.
1351 Module snd-interwave
1352 --------------------
1354 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1355 and other sound cards based on AMD InterWave (tm) chip.
1357 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1358 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1359 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1360 effect - 1 = InterWave effects enable (default 0);
1362 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1364 with isapnp=0, the following options are available:
1366 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1367 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1368 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1369 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1371 This module supports multiple cards, autoprobe and ISA PnP.
1373 Module snd-interwave-stb
1374 ------------------------
1376 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1377 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1378 circuit for extended control of bass, treble and master volume.
1380 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1381 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1382 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1383 effect - 1 = InterWave effects enable (default 0);
1385 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1387 with isapnp=0, the following options are available:
1389 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1390 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1391 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1392 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1393 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1395 This module supports multiple cards, autoprobe and ISA PnP.
1400 Module for Korg 1212 IO PCI card
1402 This module supports multiple cards.
1407 Module for Echoaudio Layla20
1409 This module supports multiple cards.
1410 The driver requires the firmware loader support on kernel.
1415 Module for Echoaudio Layla24
1417 This module supports multiple cards.
1418 The driver requires the firmware loader support on kernel.
1423 Module for Allegro/Maestro3 chips
1425 external_amp - enable external amp (enabled by default)
1426 amp_gpio - GPIO pin number for external amp (0-15) or
1427 -1 for default pin (8 for allegro, 1 for
1430 This module supports autoprobe and multiple chips.
1432 Note: the binding of amplifier is dependent on hardware.
1433 If there is no sound even though all channels are unmuted, try to
1434 specify other gpio connection via amp_gpio option.
1435 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1438 The power-management is supported.
1443 Module for Echoaudio Mia
1445 This module supports multiple cards.
1446 The driver requires the firmware loader support on kernel.
1451 Module for Miro soundcards: miroSOUND PCM 1 pro,
1453 miroSOUND PCM 20 Radio.
1455 port - Port # (0x530,0x604,0xe80,0xf40)
1456 irq - IRQ # (5,7,9,10,11)
1457 dma1 - 1st dma # (0,1,3)
1458 dma2 - 2nd dma # (0,1)
1459 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1460 mpu_irq - MPU-401 irq # (5,7,9,10)
1461 fm_port - FM Port # (0x388)
1462 wss - enable WSS mode
1463 ide - enable onboard ide support
1468 Module for Digigram miXart8 sound cards.
1470 This module supports multiple cards.
1471 Note: One miXart8 board will be represented as 4 alsa cards.
1472 See MIXART.txt for details.
1474 When the driver is compiled as a module and the hotplug firmware
1475 is supported, the firmware data is loaded via hotplug automatically.
1476 Install the necessary firmware files in alsa-firmware package.
1477 When no hotplug fw loader is available, you need to load the
1478 firmware via mixartloader utility in alsa-tools package.
1483 Module for Echoaudio Mona
1485 This module supports multiple cards.
1486 The driver requires the firmware loader support on kernel.
1491 Module for MPU-401 UART devices.
1493 port - port number or -1 (disable)
1494 irq - IRQ number or -1 (disable)
1495 pnp - PnP detection - 0 = disable, 1 = enable (default)
1497 This module supports multiple devices and PnP.
1502 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1505 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1506 irq - IRQ # for MTPAV (7,5, default=7)
1507 hwports - number of supported hardware ports, default=8.
1509 Module supports only 1 card. This module has no enable option.
1514 Module for Ego Systems (ESI) Miditerminal 4140
1516 This module supports multiple devices.
1517 Requires parport (CONFIG_PARPORT).
1522 Module for NeoMagic NM256AV/ZX chips
1524 playback_bufsize - max playback frame size in kB (4-128kB)
1525 capture_bufsize - max capture frame size in kB (4-128kB)
1526 force_ac97 - 0 or 1 (disabled by default)
1527 buffer_top - specify buffer top address
1528 use_cache - 0 or 1 (disabled by default)
1529 vaio_hack - alias buffer_top=0x25a800
1530 reset_workaround - enable AC97 RESET workaround for some laptops
1531 reset_workaround2 - enable extended AC97 RESET workaround for some
1534 This module supports one chip and autoprobe.
1536 The power-management is supported.
1538 Note: on some notebooks the buffer address cannot be detected
1539 automatically, or causes hang-up during initialization.
1540 In such a case, specify the buffer top address explicitly via
1541 the buffer_top option.
1543 Sony F250: buffer_top=0x25a800
1544 Sony F270: buffer_top=0x272800
1545 The driver supports only ac97 codec. It's possible to force
1546 to initialize/use ac97 although it's not detected. In such a
1547 case, use force_ac97=1 option - but *NO* guarantee whether it
1550 Note: The NM256 chip can be linked internally with non-AC97
1551 codecs. This driver supports only the AC97 codec, and won't work
1552 with machines with other (most likely CS423x or OPL3SAx) chips,
1553 even though the device is detected in lspci. In such a case, try
1554 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1555 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1556 and proper hardware parameters in the case without ISA PnP.
1558 Note: some laptops need a workaround for AC97 RESET. For the
1559 known hardware like Dell Latitude LS and Sony PCG-F305, this
1560 workaround is enabled automatically. For other laptops with a
1561 hard freeze, you can try reset_workaround=1 option.
1563 Note: Dell Latitude CSx laptops have another problem regarding
1564 AC97 RESET. On these laptops, reset_workaround2 option is
1565 turned on as default. This option is worth to try if the
1566 previous reset_workaround option doesn't help.
1568 Note: This driver is really crappy. It's a porting from the
1569 OSS driver, which is a result of black-magic reverse engineering.
1570 The detection of codec will fail if the driver is loaded *after*
1571 X-server as described above. You might be able to force to load
1572 the module, but it may result in hang-up. Hence, make sure that
1573 you load this module *before* X if you encounter this kind of
1579 Module for Yamaha OPL3-SA2/SA3 sound cards.
1581 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1583 with isapnp=0, the following options are available:
1585 port - control port # for OPL3-SA chip (0x370)
1586 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1587 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1588 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1589 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1590 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1591 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1592 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1594 This module supports multiple cards and ISA PnP. It does not support
1595 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1597 The power-management is supported.
1599 Module snd-opti92x-ad1848
1600 -------------------------
1602 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1603 Module works with OAK Mozart cards as well.
1605 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1607 with isapnp=0, the following options are available:
1609 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1610 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1611 fm_port - port # for OPL3 device (0x388)
1612 irq - IRQ # for WSS chip (5,7,9,10,11)
1613 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1614 dma1 - first DMA # for WSS chip (0,1,3)
1616 This module supports only one card, autoprobe and PnP.
1618 Module snd-opti92x-cs4231
1619 -------------------------
1621 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1623 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1625 with isapnp=0, the following options are available:
1627 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1628 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1629 fm_port - port # for OPL3 device (0x388)
1630 irq - IRQ # for WSS chip (5,7,9,10,11)
1631 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1632 dma1 - first DMA # for WSS chip (0,1,3)
1633 dma2 - second DMA # for WSS chip (0,1,3)
1635 This module supports only one card, autoprobe and PnP.
1640 Module for sound cards based on OPTi 82c93x chips.
1642 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1644 with isapnp=0, the following options are available:
1646 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1647 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1648 fm_port - port # for OPL3 device (0x388)
1649 irq - IRQ # for WSS chip (5,7,9,10,11)
1650 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1651 dma1 - first DMA # for WSS chip (0,1,3)
1652 dma2 - second DMA # for WSS chip (0,1,3)
1654 This module supports only one card, autoprobe and PnP.
1659 Module for sound cards based on the C-Media CMI8788 chip:
1661 * AuzenTech X-Meridian
1663 * Club3D Theatron DTS
1665 * Razer Barracuda AC-1
1668 This module supports autoprobe and multiple cards.
1673 Module for internal PC-Speaker.
1675 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1677 This module supports system beeps, some kind of PCM playback and
1678 even a few mixer controls.
1683 Module for Digigram PCXHR boards
1685 This module supports multiple cards.
1687 Module snd-portman2x4
1688 ---------------------
1690 Module for Midiman Portman 2x4 parallel port MIDI interface
1692 This module supports multiple cards.
1694 Module snd-powermac (on ppc only)
1695 ---------------------------------
1697 Module for PowerMac, iMac and iBook on-board soundchips
1699 enable_beep - enable beep using PCM (enabled as default)
1701 Module supports autoprobe a chip.
1703 Note: the driver may have problems regarding endianess.
1705 The power-management is supported.
1707 Module snd-pxa2xx-ac97 (on arm only)
1708 ------------------------------------
1710 Module for AC97 driver for the Intel PXA2xx chip
1712 For ARM architecture only.
1714 The power-management is supported.
1719 Module for Conexant Riptide chip
1721 joystick_port - Joystick port # (default: 0x200)
1722 mpu_port - MPU401 port # (default: 0x330)
1723 opl3_port - OPL3 port # (default: 0x388)
1725 This module supports multiple cards.
1726 The driver requires the firmware loader support on kernel.
1727 You need to install the firmware file "riptide.hex" to the standard
1728 firmware path (e.g. /lib/firmware).
1733 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1734 Prodif96 and Prodif Gold) sound cards.
1736 This module supports multiple cards.
1741 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1743 This module supports multiple cards.
1748 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1750 precise_ptr - Enable precise pointer (doesn't work reliably).
1753 This module supports multiple cards.
1755 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1756 module did formerly. It will allocate the buffers in advance
1757 when any RME9652 cards are found. To make the buffer
1758 allocation sure, load snd-page-alloc module in the early
1759 stage of boot sequence. See "Early Buffer Allocation"
1762 Module snd-sa11xx-uda1341 (on arm only)
1763 ---------------------------------------
1765 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1767 Module supports only one card.
1768 Module has no enable and index options.
1770 The power-management is supported.
1775 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1779 port - port # for SB DSP chip (0x220,0x240,0x260)
1780 irq - IRQ # for SB DSP chip (5,7,9,10)
1781 dma8 - DMA # for SB DSP chip (1,3)
1783 This module supports multiple cards and autoprobe.
1785 The power-management is supported.
1787 Module snd-sb16 and snd-sbawe
1788 -----------------------------
1790 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1791 SoundBlaster AWE 32 (PnP),
1792 SoundBlaster AWE 64 PnP
1794 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1795 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1796 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1798 with isapnp=0, the following options are available:
1800 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1801 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1802 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1803 (snd-sbawe module only)
1804 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1805 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1806 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1808 This module supports multiple cards, autoprobe and ISA PnP.
1810 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1811 disable 16bit DMA with dma16 = -1 module parameter.
1812 Also, all Sound Blaster 16 type cards can operate in 16-bit
1813 half duplex mode through 8-bit DMA channel by disabling their
1816 The power-management is supported.
1821 Module for Gallant SC-6000 soundcard.
1823 port - Port # (0x220 or 0x240)
1824 mss_port - MSS Port # (0x530 or 0xe80)
1825 irq - IRQ # (5,7,9,10,11)
1826 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1829 This module supports multiple cards.
1831 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1836 Module for Aztech Sound Galaxy sound card.
1838 sbport - Port # for SB16 interface (0x220,0x240)
1839 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1840 irq - IRQ # (7,9,10,11)
1843 This module supports multiple cards.
1845 The power-management is supported.
1850 Module for ENSONIQ SoundScape PnP cards.
1852 port - Port # (PnP setup)
1853 wss_port - WSS Port # (PnP setup)
1854 irq - IRQ # (PnP setup)
1855 mpu_irq - MPU-401 IRQ # (PnP setup)
1856 dma - DMA # (PnP setup)
1857 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1859 This module supports multiple cards. ISA PnP must be enabled.
1860 You need sscape_ctl tool in alsa-tools package for loading
1863 Module snd-sun-amd7930 (on sparc only)
1864 --------------------------------------
1866 Module for AMD7930 sound chips found on Sparcs.
1868 This module supports multiple cards.
1870 Module snd-sun-cs4231 (on sparc only)
1871 -------------------------------------
1873 Module for CS4231 sound chips found on Sparcs.
1875 This module supports multiple cards.
1877 Module snd-sun-dbri (on sparc only)
1878 -----------------------------------
1880 Module for DBRI sound chips found on Sparcs.
1882 This module supports multiple cards.
1884 Module snd-wavefront
1885 --------------------
1887 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1889 use_cs4232_midi - Use CS4232 MPU-401 interface
1890 (inaccessibly located inside your computer)
1891 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1893 with isapnp=0, the following options are available:
1895 cs4232_pcm_port - Port # for CS4232 PCM interface.
1896 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1897 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1898 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1899 ics2115_port - Port # for ICS2115
1900 ics2115_irq - IRQ # for ICS2115
1901 fm_port - FM OPL-3 Port #
1902 dma1 - DMA1 # for CS4232 PCM interface.
1903 dma2 - DMA2 # for CS4232 PCM interface.
1905 The below are options for wavefront_synth features:
1906 wf_raw - Assume that we need to boot the OS (default:no)
1907 If yes, then during driver loading, the state of the board is
1908 ignored, and we reset the board and load the firmware anyway.
1909 fx_raw - Assume that the FX process needs help (default:yes)
1910 If false, we'll leave the FX processor in whatever state it is
1911 when the driver is loaded. The default is to download the
1912 microprogram and associated coefficients to set it up for
1913 "default" operation, whatever that means.
1914 debug_default - Debug parameters for card initialization
1915 wait_usecs - How long to wait without sleeping, usecs
1917 This magic number seems to give pretty optimal throughput
1918 based on my limited experimentation.
1919 If you want to play around with it and find a better value, be
1920 my guest. Remember, the idea is to get a number that causes us
1921 to just busy wait for as many WaveFront commands as possible,
1922 without coming up with a number so large that we hog the whole
1924 Specifically, with this number, out of about 134,000 status
1925 waits, only about 250 result in a sleep.
1926 sleep_interval - How long to sleep when waiting for reply
1928 sleep_tries - How many times to try sleeping during a wait
1930 ospath - Pathname to processed ICS2115 OS firmware
1931 (default:wavefront.os)
1932 The path name of the ISC2115 OS firmware. In the recent
1933 version, it's handled via firmware loader framework, so it
1934 must be installed in the proper path, typically,
1936 reset_time - How long to wait for a reset to take effect
1938 ramcheck_time - How many seconds to wait for the RAM test
1940 osrun_time - How many seconds to wait for the ICS2115 OS
1943 This module supports multiple cards and ISA PnP.
1945 Note: the firmware file "wavefront.os" was located in the earlier
1946 version in /etc. Now it's loaded via firmware loader, and
1947 must be in the proper firmware path, such as /lib/firmware.
1948 Copy (or symlink) the file appropriately if you get an error
1949 regarding firmware downloading after upgrading the kernel.
1951 Module snd-sonicvibes
1952 ---------------------
1954 Module for S3 SonicVibes PCI sound cards.
1955 * PINE Schubert 32 PCI
1957 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1958 - SoundCard must have onboard SRAM for this.
1959 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1961 This module supports multiple cards and autoprobe.
1963 Module snd-serial-u16550
1964 ------------------------
1966 Module for UART16550A serial MIDI ports.
1968 port - port # for UART16550A chip
1969 irq - IRQ # for UART16550A chip, -1 = poll mode
1970 speed - speed in bauds (9600,19200,38400,57600,115200)
1972 base - base for divisor in bauds (57600,115200,230400,460800)
1974 outs - number of MIDI ports in a serial port (1-4)
1976 adaptor - Type of adaptor.
1977 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1978 3 = MS-124W M/B, 4 = Generic
1980 This module supports multiple cards. This module does not support autoprobe
1981 thus the main port must be specified!!! Other options are optional.
1986 Module for Trident 4DWave DX/NX sound cards.
1987 * Best Union Miss Melody 4DWave PCI
1989 * Warpspeed ONSpeed 4DWave PCI
1992 * CHIC True Sound 4Dwave
1993 * Shark Predator4D-PCI
1994 * Jaton SonicWave 4D
1995 * SiS SI7018 PCI Audio
1996 * Hoontech SoundTrack Digital 4DWave NX
1998 pcm_channels - max channels (voices) reserved for PCM
1999 wavetable_size - max wavetable size in kB (4-?kb)
2001 This module supports multiple cards and autoprobe.
2003 The power-management is supported.
2005 Module snd-usb-audio
2006 --------------------
2008 Module for USB audio and USB MIDI devices.
2010 vid - Vendor ID for the device (optional)
2011 pid - Product ID for the device (optional)
2012 nrpacks - Max. number of packets per URB (default: 8)
2013 async_unlink - Use async unlink mode (default: yes)
2014 device_setup - Device specific magic number (optional)
2015 - Influence depends on the device
2017 ignore_ctl_error - Ignore any USB-controller regarding mixer
2018 interface (default: no)
2020 This module supports multiple devices, autoprobe and hotplugging.
2022 NB: nrpacks parameter can be modified dynamically via sysfs.
2023 Don't put the value over 20. Changing via sysfs has no sanity
2025 NB: async_unlink=0 would cause Oops. It remains just for
2026 debugging purpose (if any).
2027 NB: ignore_ctl_error=1 may help when you get an error at accessing
2028 the mixer element such as URB error -22. This happens on some
2029 buggy USB device or the controller.
2031 Module snd-usb-caiaq
2032 --------------------
2034 Module for caiaq UB audio interfaces,
2035 * Native Instruments RigKontrol2
2036 * Native Instruments Kore Controller
2037 * Native Instruments Audio Kontrol 1
2038 * Native Instruments Audio 8 DJ
2040 This module supports multiple devices, autoprobe and hotplugging.
2042 Module snd-usb-usx2y
2043 --------------------
2045 Module for Tascam USB US-122, US-224 and US-428 devices.
2047 This module supports multiple devices, autoprobe and hotplugging.
2049 Note: you need to load the firmware via usx2yloader utility included
2050 in alsa-tools and alsa-firmware packages.
2055 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2056 8233A, 8233C, 8235, 8237 (south) bridge.
2058 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2060 joystick - Enable joystick (default off) [VIA686A/686B only]
2061 ac97_clock - AC'97 codec clock base (default 48000Hz)
2062 dxs_support - support DXS channels,
2063 0 = auto (default), 1 = enable, 2 = disable,
2064 3 = 48k only, 4 = no VRA, 5 = enable any sample
2065 rate and different sample rates on different
2067 [VIA8233/C, 8235, 8237 only]
2068 ac97_quirk - AC'97 workaround for strange hardware
2069 See "AC97 Quirk Option" section below.
2071 This module supports one chip and autoprobe.
2073 Note: on some SMP motherboards like MSI 694D the interrupts might
2074 not be generated properly. In such a case, please try to
2075 set the SMP (or MPS) version on BIOS to 1.1 instead of
2076 default value 1.4. Then the interrupt number will be
2077 assigned under 15. You might also upgrade your BIOS.
2079 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2080 channels as the first PCM. On these channels, up to 4
2081 streams can be played at the same time, and the controller
2082 can perform sample rate conversion with separate rates for
2084 As default (dxs_support = 0), 48k fixed rate is chosen
2085 except for the known devices since the output is often
2086 noisy except for 48k on some mother boards due to the
2088 Please try once dxs_support=5 and if it works on other
2089 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2090 know the PCI subsystem vendor/device id's (output of
2092 If dxs_support=5 does not work, try dxs_support=4; if it
2093 doesn't work too, try dxs_support=1. (dxs_support=1 is
2094 usually for old motherboards. The correct implemented
2095 board should work with 4 or 5.) If it still doesn't
2096 work and the default setting is ok, dxs_support=3 is the
2097 right choice. If the default setting doesn't work at all,
2098 try dxs_support=2 to disable the DXS channels.
2099 In any cases, please let us know the result and the
2100 subsystem vendor/device ids. See "Links and Addresses"
2103 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2104 additionally. The mpu_port option is for VIA686 chips only.
2106 The power-management is supported.
2108 Module snd-via82xx-modem
2109 ------------------------
2111 Module for VIA82xx AC97 modem
2113 ac97_clock - AC'97 codec clock base (default 48000Hz)
2115 This module supports one card and autoprobe.
2117 Note: The default index value of this module is -2, i.e. the first
2120 The power-management is supported.
2125 Module for virtual rawmidi devices.
2126 This module creates virtual rawmidi devices which communicate
2127 to the corresponding ALSA sequencer ports.
2129 midi_devs - MIDI devices # (1-4, default=4)
2131 This module supports multiple cards.
2136 Module for sound cards based on the Asus AV100/AV200 chips,
2137 i.e., Xonar D1, DX, D2, D2X and HDAV1.3 (Deluxe).
2139 This module supports autoprobe and multiple cards.
2144 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2146 mic - Enable Microphone on V222 Mic (NYI)
2147 ibl - Capture IBL size. (default = 0, minimum size)
2149 This module supports multiple cards.
2151 When the driver is compiled as a module and the hotplug firmware
2152 is supported, the firmware data is loaded via hotplug automatically.
2153 Install the necessary firmware files in alsa-firmware package.
2154 When no hotplug fw loader is available, you need to load the
2155 firmware via vxloader utility in alsa-tools package. To invoke
2156 vxloader automatically, add the following to /etc/modprobe.conf
2158 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2160 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2161 /etc/modules.conf, instead.)
2162 IBL size defines the interrupts period for PCM. The smaller size
2163 gives smaller latency but leads to more CPU consumption, too.
2164 The size is usually aligned to 126. As default (=0), the smallest
2165 size is chosen. The possible IBL values can be found in
2166 /proc/asound/cardX/vx-status proc file.
2168 The power-management is supported.
2173 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2175 ibl - Capture IBL size. (default = 0, minimum size)
2177 This module supports multiple cards. The module is compiled only when
2178 PCMCIA is supported on kernel.
2180 With the older 2.6.x kernel, to activate the driver via the card
2181 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2182 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2183 longer require a config file.
2185 When the driver is compiled as a module and the hotplug firmware
2186 is supported, the firmware data is loaded via hotplug automatically.
2187 Install the necessary firmware files in alsa-firmware package.
2188 When no hotplug fw loader is available, you need to load the
2189 firmware via vxloader utility in alsa-tools package.
2191 About capture IBL, see the description of snd-vx222 module.
2193 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2196 The power-management is supported.
2201 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2203 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2204 1 (auto-detect for YMF744/754 only)
2205 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2206 1 (auto-detect for YMF744/754 only)
2207 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2209 rear_switch - enable shared rear/line-in switch (bool)
2211 This module supports autoprobe and multiple chips.
2213 The power-management is supported.
2215 Module snd-pdaudiocf
2216 --------------------
2218 Module for Sound Core PDAudioCF sound card.
2220 The power-management is supported.
2226 The ac97_quirk option is used to enable/override the workaround for
2227 specific devices on drivers for on-board AC'97 controllers like
2228 snd-intel8x0. Some hardware have swapped output pins between Master
2229 and Headphone, or Surround (thanks to confusion of AC'97
2230 specifications from version to version :-)
2232 The driver provides the auto-detection of known problematic devices,
2233 but some might be unknown or wrongly detected. In such a case, pass
2234 the proper value with this option.
2236 The following strings are accepted:
2237 - default Don't override the default setting
2238 - none Disable the quirk
2239 - hp_only Bind Master and Headphone controls as a single control
2240 - swap_hp Swap headphone and master controls
2241 - swap_surround Swap master and surround controls
2242 - ad_sharing For AD1985, turn on OMS bit and use headphone
2243 - alc_jack For ALC65x, turn on the jack sense mode
2244 - inv_eapd Inverted EAPD implementation
2245 - mute_led Bind EAPD bit for turning on/off mute LED
2247 For backward compatibility, the corresponding integer value -1, 0,
2248 ... are accepted, too.
2250 For example, if "Master" volume control has no effect on your device
2251 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2254 Configuring Non-ISAPNP Cards
2255 ============================
2257 When the kernel is configured with ISA-PnP support, the modules
2258 supporting the isapnp cards will have module options "isapnp".
2259 If this option is set, *only* the ISA-PnP devices will be probed.
2260 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2261 together with the proper i/o and irq configuration.
2263 When the kernel is configured without ISA-PnP support, isapnp option
2264 will be not built in.
2267 Module Autoloading Support
2268 ==========================
2270 The ALSA drivers can be loaded automatically on demand by defining
2271 module aliases. The string 'snd-card-%1' is requested for ALSA native
2272 devices where %i is sound card number from zero to seven.
2274 To auto-load an ALSA driver for OSS services, define the string
2275 'sound-slot-%i' where %i means the slot number for OSS, which
2276 corresponds to the card index of ALSA. Usually, define this
2277 as the same card module.
2279 An example configuration for a single emu10k1 card is like below:
2280 ----- /etc/modprobe.conf
2281 alias snd-card-0 snd-emu10k1
2282 alias sound-slot-0 snd-emu10k1
2283 ----- /etc/modprobe.conf
2285 The available number of auto-loaded sound cards depends on the module
2286 option "cards_limit" of snd module. As default it's set to 1.
2287 To enable the auto-loading of multiple cards, specify the number of
2288 sound cards in that option.
2290 When multiple cards are available, it'd better to specify the index
2291 number for each card via module option, too, so that the order of
2292 cards is kept consistent.
2294 An example configuration for two sound cards is like below:
2296 ----- /etc/modprobe.conf
2298 options snd cards_limit=2
2299 alias snd-card-0 snd-interwave
2300 alias snd-card-1 snd-ens1371
2301 options snd-interwave index=0
2302 options snd-ens1371 index=1
2304 alias sound-slot-0 snd-interwave
2305 alias sound-slot-1 snd-ens1371
2306 ----- /etc/modprobe.conf
2308 In this example, the interwave card is always loaded as the first card
2309 (index 0) and ens1371 as the second (index 1).
2311 Alternative (and new) way to fixate the slot assignment is to use
2312 "slots" option of snd module. In the case above, specify like the
2315 options snd slots=snd-interwave,snd-ens1371
2317 Then, the first slot (#0) is reserved for snd-interwave driver, and
2318 the second (#1) for snd-ens1371. You can omit index option in each
2319 driver if slots option is used (although you can still have them at
2320 the same time as long as they don't conflict).
2322 The slots option is especially useful for avoiding the possible
2323 hot-plugging and the resultant slot conflict. For example, in the
2324 case above again, the first two slots are already reserved. If any
2325 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2326 snd-ens1371, it will be assigned to the third or later slot.
2328 When a module name is given with '!', the slot will be given for any
2329 modules but that name. For example, "slots=!snd-pcsp" will reserve
2330 the first slot for any modules but snd-pcsp.
2333 ALSA PCM devices to OSS devices mapping
2334 =======================================
2336 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2337 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2338 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2339 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2340 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2341 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2342 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2343 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2344 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2346 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2347 sound card number and second means device number. The ALSA devices
2348 have either 'c' or 'p' suffix indicating the direction, capture and
2349 playback, respectively.
2351 Please note that the device mapping above may be varied via the module
2352 options of snd-pcm-oss module.
2355 Proc interfaces (/proc/asound)
2356 ==============================
2358 /proc/asound/card#/pcm#[cp]/oss
2359 -------------------------------
2360 String "erase" - erase all additional informations about OSS applications
2361 String "<app_name> <fragments> <fragment_size> [<options>]"
2363 <app_name> - name of application with (higher priority) or without path
2364 <fragments> - number of fragments or zero if auto
2365 <fragment_size> - size of fragment in bytes or zero if auto
2366 <options> - optional parameters
2367 - disable the application tries to open a pcm device for
2368 this channel but does not want to use it.
2369 (Cause a bug or mmap needs)
2370 It's good for Quake etc...
2371 - direct don't use plugins
2372 - block force block mode (rvplayer)
2373 - non-block force non-block mode
2374 - whole-frag write only whole fragments (optimization affecting
2376 - no-silence do not fill silence ahead to avoid clicks
2377 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2378 instead of filled blocks
2380 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2381 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2382 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2385 Early Buffer Allocation
2386 =======================
2388 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2389 sometimes it's too late to find such spaces when the driver module is
2390 actually loaded due to memory fragmentation. You can pre-allocate the
2391 PCM buffers by loading snd-page-alloc module and write commands to its
2392 proc file in prior, for example, in the early boot stage like
2393 /etc/init.d/*.local scripts.
2395 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2396 usage of page allocation. In writing, you can send the following
2397 commands to the snd-page-alloc driver:
2399 - add VENDOR DEVICE MASK SIZE BUFFERS
2401 VENDOR and DEVICE are PCI vendor and device IDs. They take
2402 integer numbers (0x prefix is needed for the hex).
2403 MASK is the PCI DMA mask. Pass 0 if not restricted.
2404 SIZE is the size of each buffer to allocate. You can pass
2405 k and m suffix for KB and MB. The max number is 16MB.
2406 BUFFERS is the number of buffers to allocate. It must be greater
2407 than 0. The max number is 4.
2411 This will erase the all pre-allocated buffers which are not in
2418 ALSA project homepage
2419 http://www.alsa-project.org
2422 http://bugzilla.kernel.org/
2425 mailto:alsa-devel@alsa-project.org
2428 http://www.alsa-project.org/alsa-info.sh
git.openpandora.org / pandora-kernel.git / blob