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),
750 ATI SB450, SB600, RS600,
754 [Multiple options for each card instance]
755 model - force the model name
756 position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF)
757 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
759 [Single (global) options]
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)
763 power_save - Automatic power-saving timtout (in second, 0 =
765 power_save_controller - Reset HD-audio controller in power-saving mode
768 This module supports multiple cards and autoprobe.
770 Each codec may have a model table for different configurations.
771 If your machine isn't listed there, the default (usually minimal)
772 configuration is set up. You can pass "model=<name>" option to
773 specify a certain model in such a case. There are different
774 models depending on the codec chip.
776 Model name Description
777 ---------- -----------
779 3stack 3-jack in back and a headphone out
780 3stack-digout 3-jack in back, a HP out and a SPDIF out
781 5stack 5-jack in back, 2-jack in front
782 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
783 6stack 6-jack in back, 2-jack in front
784 6stack-digout 6-jack with a SPDIF out
786 z71v 3-jack (HP shared SPDIF)
787 asus 3-jack (ASUS Mobo)
789 asus-dig ASUS with SPDIF out
790 asus-dig2 ASUS with SPDIF out (using GPIO2)
792 fujitsu Fujitsu Laptops (Pi1536)
794 lg LG laptop (m1 express dual)
795 lg-lw LG LW20/LW25 laptop
797 clevo Clevo laptops (m520G, m665n)
798 medion Medion Rim 2150
799 test for testing/debugging purpose, almost all controls can be
800 adjusted. Appearing only when compiled with
802 auto auto-config reading BIOS (default)
806 hp-3013 HP machines (3013-variant)
807 fujitsu Fujitsu S7020
809 will Will laptops (PB V7900)
810 replacer Replacer 672V
811 basic fixed pin assignment (old default model)
812 test for testing/debugging purpose, almost all controls can
813 adjusted. Appearing only when compiled with
815 auto auto-config reading BIOS (default)
818 fujitsu Fujitsu Laptop
819 hp-bpc HP xw4400/6400/8400/9400 laptops
820 hp-bpc-d7000 HP BPC D7000
821 hp-tc-t5735 HP Thin Client T5735
825 hippo Hippo (ATI) with jack detection, Sony UX-90s
826 hippo_1 Hippo (Benq) with jack detection
827 sony-assamd Sony ASSAMD
828 ultra Samsung Q1 Ultra Vista model
829 lenovo-3000 Lenovo 3000 y410
830 basic fixed pin assignment w/o SPDIF
831 auto auto-config reading BIOS (default)
834 quanta-il1 Quanta IL1 mini-notebook
838 dell Dell OEM laptops (Vostro 1200)
840 test for testing/debugging purpose, almost all controls can
841 adjusted. Appearing only when compiled with
843 auto auto-config reading BIOS (default)
849 3stack-dig 3-stack (2-channel) with SPDIF
850 3stack-6ch 3-stack (6-channel)
851 3stack-6ch-dig 3-stack (6-channel) with SPDIF
852 6stack-dig 6-stack with SPDIF
853 lenovo-101e Lenovo laptop
854 eeepc-p701 ASUS Eeepc P701
855 eeepc-ep20 ASUS Eeepc EP20
860 auto auto-config reading BIOS (default)
863 3stack-dig 3-jack with SPDIF I/O
864 6stack-dig 6-jack digital with SPDIF I/O
866 targa Targa T8, MSI-1049 T8
869 macpro MacPro support
870 mbp3 Macbook Pro rev3
871 imac24 iMac 24'' with jack detection
873 auto auto-config reading BIOS (default)
876 3stack-dig 3-jack with SPDIF I/O
877 6stack-dig 6-jack digital with SPDIF I/O
878 3stack-6ch 3-jack 6-channel
879 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
880 6stack-dig-demo 6-jack digital for Intel demo board
881 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
882 acer-aspire Acer Aspire 9810
883 medion Medion Laptops
884 medion-md2 Medion MD2
886 targa-2ch-dig Targs/MSI with 2-channel
887 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
888 lenovo-101e Lenovo 101E
889 lenovo-nb0763 Lenovo NB0763
890 lenovo-ms7195-dig Lenovo MS7195
892 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
893 6stack-dell Dell machines with 6stack (Inspiron 530)
895 clevo-m720 Clevo M720 laptop series
896 fujitsu-pi2515 Fujitsu AMILO Pi2515
897 auto auto-config reading BIOS (default)
901 3stack-dig 3-jack with SPDIF I/O
902 6stack-dig 6-jack with SPDIF I/O
903 3stack-660 3-jack (for ALC660)
904 uniwill-m31 Uniwill M31 laptop
905 toshiba Toshiba laptop support
906 asus Asus laptop support
907 asus-laptop ASUS F2/F3 laptops
908 auto auto-config reading BIOS (default)
912 3stack-dig 3-jack with SPDIF OUT
913 6stack-dig 6-jack with SPDIF OUT
914 3stack-660 3-jack (for ALC660VD)
915 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
916 lenovo Lenovo 3000 C200
917 dallas Dallas laptops
919 auto auto-config reading BIOS (default)
922 minimal 3-jack in back
923 min_fp 3-jack in back, 2-jack in front
924 full 6-jack in back, 2-jack in front
925 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
926 allout 5-jack in back, 2-jack in front, SPDIF out
927 auto auto-config reading BIOS (default)
930 3stack 3-stack mode (default)
933 AD1884A / AD1883 / AD1984A / AD1984B
934 desktop 3-stack desktop (default)
935 laptop laptop with HP jack sensing
936 mobile mobile devices with HP jack sensing
937 thinkpad Lenovo Thinkpad X300
943 basic 3-jack (default)
945 thinkpad Lenovo Thinkpad T60/X60/Z60
952 basic default configuration
953 thinkpad Lenovo Thinkpad T61/X61
957 6stack 6-jack, separate surrounds (default)
958 3stack 3-stack, shared surrounds
959 laptop 2-channel only (FSC V2060, Samsung M50)
960 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
961 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
962 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
964 AD1988/AD1988B/AD1989A/AD1989B
966 6stack-dig ditto with SPDIF
968 3stack-dig ditto with SPDIF
969 laptop 3-jack with hp-jack automute
970 laptop-dig ditto with SPDIF
971 auto auto-config reading BIOS (default)
974 laptop-hpsense Laptop with HP sense (old model laptop)
975 laptop-micsense Laptop with Mic sense (old model fujitsu)
976 laptop-hpmicsense Laptop with HP and Mic senses
978 test for testing/debugging purpose, almost all controls
979 can be adjusted. Appearing only when compiled with
983 laptop Basic Laptop config
984 laptop-hp Laptop config for some HP models (subdevice 30A5)
985 laptop-eapd Laptop config with EAPD support
986 test for testing/debugging purpose, almost all controls
987 can be adjusted. Appearing only when compiled with
991 laptop Basic Laptop config (default)
996 dell-d21 Dell (unknown)
997 dell-d22 Dell (unknown)
998 dell-d23 Dell (unknown)
999 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
1000 dell-m22 Dell Latitude D620, Dell Latitude D820
1001 dell-m23 Dell XPS M1710, Dell Precision M90
1002 dell-m24 Dell Latitude 120L
1003 dell-m25 Dell Inspiron E1505n
1004 dell-m26 Dell Inspiron 1501
1005 dell-m27 Dell Inspiron E1705/9400
1006 gateway Gateway laptops with EAPD control
1007 panasonic Panasonic CF-74
1011 dell-m42 Dell (unknown)
1012 dell-m43 Dell Precision
1013 dell-m44 Dell Inspiron
1018 5stack D945 5stack + SPDIF
1019 intel-mac-v1 Intel Mac Type 1
1020 intel-mac-v2 Intel Mac Type 2
1021 intel-mac-v3 Intel Mac Type 3
1022 intel-mac-v4 Intel Mac Type 4
1023 intel-mac-v5 Intel Mac Type 5
1024 macmini Intel Mac Mini (equivalent with type 3)
1025 macbook Intel Mac Book (eq. type 5)
1026 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1027 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1028 imac-intel Intel iMac (eq. type 2)
1029 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1030 dell-d81 Dell (unknown)
1031 dell-d82 Dell (unknown)
1032 dell-m81 Dell (unknown)
1033 dell-m82 Dell XPS M1210
1036 ref Reference board, base config
1037 m2-2 Some Gateway MX series laptops
1038 m6 Some Gateway NX series laptops
1039 pa6 Gateway NX860 series
1041 STAC9227/9228/9229/927x
1044 5stack D965 5stack + SPDIF
1045 dell-3stack Dell Dimension E520
1046 dell-bios Fixes with Dell BIOS setup
1050 dell-m4-1 Dell desktops
1051 dell-m4-2 Dell desktops
1055 dell-m6 Dell desktops
1058 vaio Setup for VAIO FE550G/SZ110
1059 vaio-ar Setup for VAIO AR
1061 The model name "genric" is treated as a special case. When this
1062 model is given, the driver uses the generic codec parser without
1063 "codec-patch". It's sometimes good for testing and debugging.
1065 If the default configuration doesn't work and one of the above
1066 matches with your device, report it together with the PCI
1067 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1068 ML (see the section "Links and Addresses").
1070 power_save and power_save_controller options are for power-saving
1071 mode. See powersave.txt for details.
1073 Note 2: If you get click noises on output, try the module option
1074 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1075 register value without FIFO size correction as the current
1076 DMA pointer. position_fix=2 will make the driver to use
1077 the position buffer instead of reading SD_LPIB register.
1078 (Usually SD_LPLIB register is more accurate than the
1081 NB: If you get many "azx_get_response timeout" messages at
1082 loading, it's likely a problem of interrupts (e.g. ACPI irq
1083 routing). Try to boot with options like "pci=noacpi". Also, you
1084 can try "single_cmd=1" module option. This will switch the
1085 communication method between HDA controller and codecs to the
1086 single immediate commands instead of CORB/RIRB. Basically, the
1087 single command mode is provided only for BIOS, and you won't get
1088 unsolicited events, too. But, at least, this works independently
1089 from the irq. Remember this is a last resort, and should be
1090 avoided as much as possible...
1092 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1093 On some hardwares, you may need to add a proper probe_mask option
1094 to avoid the "azx_get_response timeout" problem above, instead.
1095 This occurs when the access to non-existing or non-working codec slot
1096 (likely a modem one) causes a stall of the communication via HD-audio
1097 bus. You can see which codec slots are probed by enabling
1098 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1099 proc files. Then limit the slots to probe by probe_mask option.
1100 For example, probe_mask=1 means to probe only the first slot, and
1101 probe_mask=4 means only the third slot.
1103 The power-management is supported.
1108 Module for RME Hammerfall DSP audio interface(s)
1110 This module supports multiple cards.
1112 Note: The firmware data can be automatically loaded via hotplug
1113 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1114 the firmware via hdsploader utility included in alsa-tools
1116 The firmware data is found in alsa-firmware package.
1118 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1119 module did formerly. It will allocate the buffers in advance
1120 when any HDSP cards are found. To make the buffer
1121 allocation sure, load snd-page-alloc module in the early
1122 stage of boot sequence. See "Early Buffer Allocation"
1128 Module for RME HDSP MADI board.
1130 precise_ptr - Enable precise pointer, or disable.
1131 line_outs_monitor - Send playback streams to analog outs by default.
1132 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1134 See hdspm.txt for details.
1139 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1141 This module supports autoprobe and multiple cards.
1143 Power management is _not_ supported.
1148 Module for Envy24 (ICE1712) based PCI sound cards.
1149 * MidiMan M Audio Delta 1010
1150 * MidiMan M Audio Delta 1010LT
1151 * MidiMan M Audio Delta DiO 2496
1152 * MidiMan M Audio Delta 66
1153 * MidiMan M Audio Delta 44
1154 * MidiMan M Audio Delta 410
1155 * MidiMan M Audio Audiophile 2496
1158 * TerraTec EWX 24/96
1159 * TerraTec DMX 6Fire
1161 * Hoontech SoundTrack DSP 24
1162 * Hoontech SoundTrack DSP 24 Value
1163 * Hoontech SoundTrack DSP 24 Media 7.1
1164 * Event Electronics, EZ8
1166 * Lionstracs, Mediastaton
1168 model - Use the given board model, one of the following:
1169 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1170 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1171 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1172 phase88, mediastation
1173 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1174 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1175 in msec resolution, default value is 500 (0.5 sec)
1177 This module supports multiple cards and autoprobe. Note: The consumer part
1178 is not used with all Envy24 based cards (for example in the MidiMan Delta
1181 Note: The supported board is detected by reading EEPROM or PCI
1182 SSID (if EEPROM isn't available). You can override the
1183 model by passing "model" module option in case that the
1184 driver isn't configured properly or you want to try another
1190 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1191 * MidiMan M Audio Revolution 5.1
1192 * MidiMan M Audio Revolution 7.1
1193 * MidiMan M Audio Audiophile 192
1195 * TerraTec Aureon 5.1 Sky
1196 * TerraTec Aureon 7.1 Space
1197 * TerraTec Aureon 7.1 Universe
1200 * AudioTrak Prodigy 7.1
1201 * AudioTrak Prodigy 7.1LT
1202 * AudioTrak Prodigy 192
1204 * Albatron K8X800 Pro II
1205 * Chaintech ZNF3-150
1206 * Chaintech ZNF3-250
1213 model - Use the given board model, one of the following:
1214 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1215 prodigy192, aureon51, aureon71, universe, ap192,
1216 k8x800, phase22, phase28, ms300, av710, se200pci,
1219 This module supports multiple cards and autoprobe.
1221 Note: The supported board is detected by reading EEPROM or PCI
1222 SSID (if EEPROM isn't available). You can override the
1223 model by passing "model" module option in case that the
1224 driver isn't configured properly or you want to try another
1230 Module for Echoaudio Indigo
1232 This module supports multiple cards.
1233 The driver requires the firmware loader support on kernel.
1238 Module for Echoaudio Indigo DJ
1240 This module supports multiple cards.
1241 The driver requires the firmware loader support on kernel.
1246 Module for Echoaudio Indigo IO
1248 This module supports multiple cards.
1249 The driver requires the firmware loader support on kernel.
1254 Module for AC'97 motherboards from Intel and compatibles.
1255 * Intel i810/810E, i815, i820, i830, i84x, MX440
1256 ICH5, ICH6, ICH7, ESB2
1257 * SiS 7012 (SiS 735)
1258 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1260 * AMD AMD768, AMD8111
1263 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1264 ac97_quirk - AC'97 workaround for strange hardware
1265 See "AC97 Quirk Option" section below.
1266 buggy_irq - Enable workaround for buggy interrupts on some
1267 motherboards (default yes on nForce chips,
1269 buggy_semaphore - Enable workaround for hardwares with buggy
1270 semaphores (e.g. on some ASUS laptops)
1272 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1273 from the controller chip
1274 (0 = off, 1 = on, -1 = default)
1276 This module supports one chip and autoprobe.
1278 Note: the latest driver supports auto-detection of chip clock.
1279 if you still encounter too fast playback, specify the clock
1280 explicitly via the module option "ac97_clock=41194".
1282 Joystick/MIDI ports are not supported by this driver. If your
1283 motherboard has these devices, use the ns558 or snd-mpu401
1284 modules, respectively.
1286 The power-management is supported.
1288 Module snd-intel8x0m
1289 --------------------
1291 Module for Intel ICH (i8x0) chipset MC97 modems.
1292 * Intel i810/810E, i815, i820, i830, i84x, MX440
1294 * SiS 7013 (SiS 735)
1295 * NVidia NForce, NForce2, NForce2s, NForce3
1299 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1301 This module supports one card and autoprobe.
1303 Note: The default index value of this module is -2, i.e. the first
1306 The power-management is supported.
1308 Module snd-interwave
1309 --------------------
1311 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1312 and other sound cards based on AMD InterWave (tm) chip.
1314 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1315 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1316 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1317 effect - 1 = InterWave effects enable (default 0);
1319 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1321 with isapnp=0, the following options are available:
1323 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1324 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1325 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1326 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1328 This module supports multiple cards, autoprobe and ISA PnP.
1330 Module snd-interwave-stb
1331 ------------------------
1333 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1334 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1335 circuit for extended control of bass, treble and master volume.
1337 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1338 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1339 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1340 effect - 1 = InterWave effects enable (default 0);
1342 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1344 with isapnp=0, the following options are available:
1346 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1347 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1348 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1349 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1350 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1352 This module supports multiple cards, autoprobe and ISA PnP.
1357 Module for Korg 1212 IO PCI card
1359 This module supports multiple cards.
1364 Module for Echoaudio Layla20
1366 This module supports multiple cards.
1367 The driver requires the firmware loader support on kernel.
1372 Module for Echoaudio Layla24
1374 This module supports multiple cards.
1375 The driver requires the firmware loader support on kernel.
1380 Module for Allegro/Maestro3 chips
1382 external_amp - enable external amp (enabled by default)
1383 amp_gpio - GPIO pin number for external amp (0-15) or
1384 -1 for default pin (8 for allegro, 1 for
1387 This module supports autoprobe and multiple chips.
1389 Note: the binding of amplifier is dependent on hardware.
1390 If there is no sound even though all channels are unmuted, try to
1391 specify other gpio connection via amp_gpio option.
1392 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1395 The power-management is supported.
1400 Module for Echoaudio Mia
1402 This module supports multiple cards.
1403 The driver requires the firmware loader support on kernel.
1408 Module for Miro soundcards: miroSOUND PCM 1 pro,
1410 miroSOUND PCM 20 Radio.
1412 port - Port # (0x530,0x604,0xe80,0xf40)
1413 irq - IRQ # (5,7,9,10,11)
1414 dma1 - 1st dma # (0,1,3)
1415 dma2 - 2nd dma # (0,1)
1416 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1417 mpu_irq - MPU-401 irq # (5,7,9,10)
1418 fm_port - FM Port # (0x388)
1419 wss - enable WSS mode
1420 ide - enable onboard ide support
1425 Module for Digigram miXart8 sound cards.
1427 This module supports multiple cards.
1428 Note: One miXart8 board will be represented as 4 alsa cards.
1429 See MIXART.txt for details.
1431 When the driver is compiled as a module and the hotplug firmware
1432 is supported, the firmware data is loaded via hotplug automatically.
1433 Install the necessary firmware files in alsa-firmware package.
1434 When no hotplug fw loader is available, you need to load the
1435 firmware via mixartloader utility in alsa-tools package.
1440 Module for Echoaudio Mona
1442 This module supports multiple cards.
1443 The driver requires the firmware loader support on kernel.
1448 Module for MPU-401 UART devices.
1450 port - port number or -1 (disable)
1451 irq - IRQ number or -1 (disable)
1452 pnp - PnP detection - 0 = disable, 1 = enable (default)
1454 This module supports multiple devices and PnP.
1459 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1462 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1463 irq - IRQ # for MTPAV (7,5, default=7)
1464 hwports - number of supported hardware ports, default=8.
1466 Module supports only 1 card. This module has no enable option.
1471 Module for Ego Systems (ESI) Miditerminal 4140
1473 This module supports multiple devices.
1474 Requires parport (CONFIG_PARPORT).
1479 Module for NeoMagic NM256AV/ZX chips
1481 playback_bufsize - max playback frame size in kB (4-128kB)
1482 capture_bufsize - max capture frame size in kB (4-128kB)
1483 force_ac97 - 0 or 1 (disabled by default)
1484 buffer_top - specify buffer top address
1485 use_cache - 0 or 1 (disabled by default)
1486 vaio_hack - alias buffer_top=0x25a800
1487 reset_workaround - enable AC97 RESET workaround for some laptops
1488 reset_workaround2 - enable extended AC97 RESET workaround for some
1491 This module supports one chip and autoprobe.
1493 The power-management is supported.
1495 Note: on some notebooks the buffer address cannot be detected
1496 automatically, or causes hang-up during initialization.
1497 In such a case, specify the buffer top address explicitly via
1498 the buffer_top option.
1500 Sony F250: buffer_top=0x25a800
1501 Sony F270: buffer_top=0x272800
1502 The driver supports only ac97 codec. It's possible to force
1503 to initialize/use ac97 although it's not detected. In such a
1504 case, use force_ac97=1 option - but *NO* guarantee whether it
1507 Note: The NM256 chip can be linked internally with non-AC97
1508 codecs. This driver supports only the AC97 codec, and won't work
1509 with machines with other (most likely CS423x or OPL3SAx) chips,
1510 even though the device is detected in lspci. In such a case, try
1511 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1512 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1513 and proper hardware parameters in the case without ISA PnP.
1515 Note: some laptops need a workaround for AC97 RESET. For the
1516 known hardware like Dell Latitude LS and Sony PCG-F305, this
1517 workaround is enabled automatically. For other laptops with a
1518 hard freeze, you can try reset_workaround=1 option.
1520 Note: Dell Latitude CSx laptops have another problem regarding
1521 AC97 RESET. On these laptops, reset_workaround2 option is
1522 turned on as default. This option is worth to try if the
1523 previous reset_workaround option doesn't help.
1525 Note: This driver is really crappy. It's a porting from the
1526 OSS driver, which is a result of black-magic reverse engineering.
1527 The detection of codec will fail if the driver is loaded *after*
1528 X-server as described above. You might be able to force to load
1529 the module, but it may result in hang-up. Hence, make sure that
1530 you load this module *before* X if you encounter this kind of
1536 Module for Yamaha OPL3-SA2/SA3 sound cards.
1538 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1540 with isapnp=0, the following options are available:
1542 port - control port # for OPL3-SA chip (0x370)
1543 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1544 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1545 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1546 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1547 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1548 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1549 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1551 This module supports multiple cards and ISA PnP. It does not support
1552 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1554 The power-management is supported.
1556 Module snd-opti92x-ad1848
1557 -------------------------
1559 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1560 Module works with OAK Mozart cards as well.
1562 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1564 with isapnp=0, the following options are available:
1566 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1567 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1568 fm_port - port # for OPL3 device (0x388)
1569 irq - IRQ # for WSS chip (5,7,9,10,11)
1570 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1571 dma1 - first DMA # for WSS chip (0,1,3)
1573 This module supports only one card, autoprobe and PnP.
1575 Module snd-opti92x-cs4231
1576 -------------------------
1578 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1580 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1582 with isapnp=0, the following options are available:
1584 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1585 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1586 fm_port - port # for OPL3 device (0x388)
1587 irq - IRQ # for WSS chip (5,7,9,10,11)
1588 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1589 dma1 - first DMA # for WSS chip (0,1,3)
1590 dma2 - second DMA # for WSS chip (0,1,3)
1592 This module supports only one card, autoprobe and PnP.
1597 Module for sound cards based on OPTi 82c93x chips.
1599 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1601 with isapnp=0, the following options are available:
1603 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1604 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1605 fm_port - port # for OPL3 device (0x388)
1606 irq - IRQ # for WSS chip (5,7,9,10,11)
1607 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1608 dma1 - first DMA # for WSS chip (0,1,3)
1609 dma2 - second DMA # for WSS chip (0,1,3)
1611 This module supports only one card, autoprobe and PnP.
1616 Module for sound cards based on the C-Media CMI8788 chip:
1618 * AuzenTech X-Meridian
1620 * Club3D Theatron DTS
1622 * Razer Barracuda AC-1
1625 This module supports autoprobe and multiple cards.
1627 Power management is _not_ supported.
1632 Module for internal PC-Speaker.
1634 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1636 This module supports system beeps, some kind of PCM playback and
1637 even a few mixer controls.
1642 Module for Digigram PCXHR boards
1644 This module supports multiple cards.
1646 Module snd-portman2x4
1647 ---------------------
1649 Module for Midiman Portman 2x4 parallel port MIDI interface
1651 This module supports multiple cards.
1653 Module snd-powermac (on ppc only)
1654 ---------------------------------
1656 Module for PowerMac, iMac and iBook on-board soundchips
1658 enable_beep - enable beep using PCM (enabled as default)
1660 Module supports autoprobe a chip.
1662 Note: the driver may have problems regarding endianess.
1664 The power-management is supported.
1666 Module snd-pxa2xx-ac97 (on arm only)
1667 ------------------------------------
1669 Module for AC97 driver for the Intel PXA2xx chip
1671 For ARM architecture only.
1673 The power-management is supported.
1678 Module for Conexant Riptide chip
1680 joystick_port - Joystick port # (default: 0x200)
1681 mpu_port - MPU401 port # (default: 0x330)
1682 opl3_port - OPL3 port # (default: 0x388)
1684 This module supports multiple cards.
1685 The driver requires the firmware loader support on kernel.
1686 You need to install the firmware file "riptide.hex" to the standard
1687 firmware path (e.g. /lib/firmware).
1692 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1693 Prodif96 and Prodif Gold) sound cards.
1695 This module supports multiple cards.
1700 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1702 This module supports multiple cards.
1707 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1709 precise_ptr - Enable precise pointer (doesn't work reliably).
1712 This module supports multiple cards.
1714 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1715 module did formerly. It will allocate the buffers in advance
1716 when any RME9652 cards are found. To make the buffer
1717 allocation sure, load snd-page-alloc module in the early
1718 stage of boot sequence. See "Early Buffer Allocation"
1721 Module snd-sa11xx-uda1341 (on arm only)
1722 ---------------------------------------
1724 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1726 Module supports only one card.
1727 Module has no enable and index options.
1729 The power-management is supported.
1734 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1738 port - port # for SB DSP chip (0x220,0x240,0x260)
1739 irq - IRQ # for SB DSP chip (5,7,9,10)
1740 dma8 - DMA # for SB DSP chip (1,3)
1742 This module supports multiple cards and autoprobe.
1744 The power-management is supported.
1746 Module snd-sb16 and snd-sbawe
1747 -----------------------------
1749 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1750 SoundBlaster AWE 32 (PnP),
1751 SoundBlaster AWE 64 PnP
1753 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1754 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1755 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1757 with isapnp=0, the following options are available:
1759 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1760 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1761 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1762 (snd-sbawe module only)
1763 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1764 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1765 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1767 This module supports multiple cards, autoprobe and ISA PnP.
1769 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1770 disable 16bit DMA with dma16 = -1 module parameter.
1771 Also, all Sound Blaster 16 type cards can operate in 16-bit
1772 half duplex mode through 8-bit DMA channel by disabling their
1775 The power-management is supported.
1780 Module for Gallant SC-6000 soundcard.
1782 port - Port # (0x220 or 0x240)
1783 mss_port - MSS Port # (0x530 or 0xe80)
1784 irq - IRQ # (5,7,9,10,11)
1785 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1788 This module supports multiple cards.
1790 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1795 Module for Aztech Sound Galaxy sound card.
1797 sbport - Port # for SB16 interface (0x220,0x240)
1798 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1799 irq - IRQ # (7,9,10,11)
1802 This module supports multiple cards.
1804 The power-management is supported.
1809 Module for ENSONIQ SoundScape PnP cards.
1811 port - Port # (PnP setup)
1812 wss_port - WSS Port # (PnP setup)
1813 irq - IRQ # (PnP setup)
1814 mpu_irq - MPU-401 IRQ # (PnP setup)
1815 dma - DMA # (PnP setup)
1816 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1818 This module supports multiple cards. ISA PnP must be enabled.
1819 You need sscape_ctl tool in alsa-tools package for loading
1822 Module snd-sun-amd7930 (on sparc only)
1823 --------------------------------------
1825 Module for AMD7930 sound chips found on Sparcs.
1827 This module supports multiple cards.
1829 Module snd-sun-cs4231 (on sparc only)
1830 -------------------------------------
1832 Module for CS4231 sound chips found on Sparcs.
1834 This module supports multiple cards.
1836 Module snd-sun-dbri (on sparc only)
1837 -----------------------------------
1839 Module for DBRI sound chips found on Sparcs.
1841 This module supports multiple cards.
1843 Module snd-wavefront
1844 --------------------
1846 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1848 use_cs4232_midi - Use CS4232 MPU-401 interface
1849 (inaccessibly located inside your computer)
1850 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1852 with isapnp=0, the following options are available:
1854 cs4232_pcm_port - Port # for CS4232 PCM interface.
1855 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1856 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1857 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1858 ics2115_port - Port # for ICS2115
1859 ics2115_irq - IRQ # for ICS2115
1860 fm_port - FM OPL-3 Port #
1861 dma1 - DMA1 # for CS4232 PCM interface.
1862 dma2 - DMA2 # for CS4232 PCM interface.
1864 The below are options for wavefront_synth features:
1865 wf_raw - Assume that we need to boot the OS (default:no)
1866 If yes, then during driver loading, the state of the board is
1867 ignored, and we reset the board and load the firmware anyway.
1868 fx_raw - Assume that the FX process needs help (default:yes)
1869 If false, we'll leave the FX processor in whatever state it is
1870 when the driver is loaded. The default is to download the
1871 microprogram and associated coefficients to set it up for
1872 "default" operation, whatever that means.
1873 debug_default - Debug parameters for card initialization
1874 wait_usecs - How long to wait without sleeping, usecs
1876 This magic number seems to give pretty optimal throughput
1877 based on my limited experimentation.
1878 If you want to play around with it and find a better value, be
1879 my guest. Remember, the idea is to get a number that causes us
1880 to just busy wait for as many WaveFront commands as possible,
1881 without coming up with a number so large that we hog the whole
1883 Specifically, with this number, out of about 134,000 status
1884 waits, only about 250 result in a sleep.
1885 sleep_interval - How long to sleep when waiting for reply
1887 sleep_tries - How many times to try sleeping during a wait
1889 ospath - Pathname to processed ICS2115 OS firmware
1890 (default:wavefront.os)
1891 The path name of the ISC2115 OS firmware. In the recent
1892 version, it's handled via firmware loader framework, so it
1893 must be installed in the proper path, typically,
1895 reset_time - How long to wait for a reset to take effect
1897 ramcheck_time - How many seconds to wait for the RAM test
1899 osrun_time - How many seconds to wait for the ICS2115 OS
1902 This module supports multiple cards and ISA PnP.
1904 Note: the firmware file "wavefront.os" was located in the earlier
1905 version in /etc. Now it's loaded via firmware loader, and
1906 must be in the proper firmware path, such as /lib/firmware.
1907 Copy (or symlink) the file appropriately if you get an error
1908 regarding firmware downloading after upgrading the kernel.
1910 Module snd-sonicvibes
1911 ---------------------
1913 Module for S3 SonicVibes PCI sound cards.
1914 * PINE Schubert 32 PCI
1916 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1917 - SoundCard must have onboard SRAM for this.
1918 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1920 This module supports multiple cards and autoprobe.
1922 Module snd-serial-u16550
1923 ------------------------
1925 Module for UART16550A serial MIDI ports.
1927 port - port # for UART16550A chip
1928 irq - IRQ # for UART16550A chip, -1 = poll mode
1929 speed - speed in bauds (9600,19200,38400,57600,115200)
1931 base - base for divisor in bauds (57600,115200,230400,460800)
1933 outs - number of MIDI ports in a serial port (1-4)
1935 adaptor - Type of adaptor.
1936 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1937 3 = MS-124W M/B, 4 = Generic
1939 This module supports multiple cards. This module does not support autoprobe
1940 thus the main port must be specified!!! Other options are optional.
1945 Module for Trident 4DWave DX/NX sound cards.
1946 * Best Union Miss Melody 4DWave PCI
1948 * Warpspeed ONSpeed 4DWave PCI
1951 * CHIC True Sound 4Dwave
1952 * Shark Predator4D-PCI
1953 * Jaton SonicWave 4D
1955 pcm_channels - max channels (voices) reserved for PCM
1956 wavetable_size - max wavetable size in kB (4-?kb)
1958 This module supports multiple cards and autoprobe.
1960 The power-management is supported.
1962 Module snd-usb-audio
1963 --------------------
1965 Module for USB audio and USB MIDI devices.
1967 vid - Vendor ID for the device (optional)
1968 pid - Product ID for the device (optional)
1969 device_setup - Device specific magic number (optional)
1970 - Influence depends on the device
1973 This module supports multiple devices, autoprobe and hotplugging.
1975 Module snd-usb-caiaq
1976 --------------------
1978 Module for caiaq UB audio interfaces,
1979 * Native Instruments RigKontrol2
1980 * Native Instruments Kore Controller
1981 * Native Instruments Audio Kontrol 1
1982 * Native Instruments Audio 8 DJ
1984 This module supports multiple devices, autoprobe and hotplugging.
1986 Module snd-usb-usx2y
1987 --------------------
1989 Module for Tascam USB US-122, US-224 and US-428 devices.
1991 This module supports multiple devices, autoprobe and hotplugging.
1993 Note: you need to load the firmware via usx2yloader utility included
1994 in alsa-tools and alsa-firmware packages.
1999 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2000 8233A, 8233C, 8235, 8237 (south) bridge.
2002 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2004 joystick - Enable joystick (default off) [VIA686A/686B only]
2005 ac97_clock - AC'97 codec clock base (default 48000Hz)
2006 dxs_support - support DXS channels,
2007 0 = auto (default), 1 = enable, 2 = disable,
2008 3 = 48k only, 4 = no VRA, 5 = enable any sample
2009 rate and different sample rates on different
2011 [VIA8233/C, 8235, 8237 only]
2012 ac97_quirk - AC'97 workaround for strange hardware
2013 See "AC97 Quirk Option" section below.
2015 This module supports one chip and autoprobe.
2017 Note: on some SMP motherboards like MSI 694D the interrupts might
2018 not be generated properly. In such a case, please try to
2019 set the SMP (or MPS) version on BIOS to 1.1 instead of
2020 default value 1.4. Then the interrupt number will be
2021 assigned under 15. You might also upgrade your BIOS.
2023 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2024 channels as the first PCM. On these channels, up to 4
2025 streams can be played at the same time, and the controller
2026 can perform sample rate conversion with separate rates for
2028 As default (dxs_support = 0), 48k fixed rate is chosen
2029 except for the known devices since the output is often
2030 noisy except for 48k on some mother boards due to the
2032 Please try once dxs_support=5 and if it works on other
2033 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2034 know the PCI subsystem vendor/device id's (output of
2036 If dxs_support=5 does not work, try dxs_support=4; if it
2037 doesn't work too, try dxs_support=1. (dxs_support=1 is
2038 usually for old motherboards. The correct implemented
2039 board should work with 4 or 5.) If it still doesn't
2040 work and the default setting is ok, dxs_support=3 is the
2041 right choice. If the default setting doesn't work at all,
2042 try dxs_support=2 to disable the DXS channels.
2043 In any cases, please let us know the result and the
2044 subsystem vendor/device ids. See "Links and Addresses"
2047 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2048 additionally. The mpu_port option is for VIA686 chips only.
2050 The power-management is supported.
2052 Module snd-via82xx-modem
2053 ------------------------
2055 Module for VIA82xx AC97 modem
2057 ac97_clock - AC'97 codec clock base (default 48000Hz)
2059 This module supports one card and autoprobe.
2061 Note: The default index value of this module is -2, i.e. the first
2064 The power-management is supported.
2069 Module for virtual rawmidi devices.
2070 This module creates virtual rawmidi devices which communicate
2071 to the corresponding ALSA sequencer ports.
2073 midi_devs - MIDI devices # (1-4, default=4)
2075 This module supports multiple cards.
2080 Module for sound cards based on the Asus AV200 chip, i.e.,
2081 Xonar D2 and Xonar D2X.
2083 This module supports autoprobe and multiple cards.
2085 Power management is _not_ supported.
2090 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2092 mic - Enable Microphone on V222 Mic (NYI)
2093 ibl - Capture IBL size. (default = 0, minimum size)
2095 This module supports multiple cards.
2097 When the driver is compiled as a module and the hotplug firmware
2098 is supported, the firmware data is loaded via hotplug automatically.
2099 Install the necessary firmware files in alsa-firmware package.
2100 When no hotplug fw loader is available, you need to load the
2101 firmware via vxloader utility in alsa-tools package. To invoke
2102 vxloader automatically, add the following to /etc/modprobe.conf
2104 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2106 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2107 /etc/modules.conf, instead.)
2108 IBL size defines the interrupts period for PCM. The smaller size
2109 gives smaller latency but leads to more CPU consumption, too.
2110 The size is usually aligned to 126. As default (=0), the smallest
2111 size is chosen. The possible IBL values can be found in
2112 /proc/asound/cardX/vx-status proc file.
2114 The power-management is supported.
2119 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2121 ibl - Capture IBL size. (default = 0, minimum size)
2123 This module supports multiple cards. The module is compiled only when
2124 PCMCIA is supported on kernel.
2126 With the older 2.6.x kernel, to activate the driver via the card
2127 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2128 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2129 longer require a config file.
2131 When the driver is compiled as a module and the hotplug firmware
2132 is supported, the firmware data is loaded via hotplug automatically.
2133 Install the necessary firmware files in alsa-firmware package.
2134 When no hotplug fw loader is available, you need to load the
2135 firmware via vxloader utility in alsa-tools package.
2137 About capture IBL, see the description of snd-vx222 module.
2139 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2142 The power-management is supported.
2147 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2149 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2150 1 (auto-detect for YMF744/754 only)
2151 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2152 1 (auto-detect for YMF744/754 only)
2153 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2155 rear_switch - enable shared rear/line-in switch (bool)
2157 This module supports autoprobe and multiple chips.
2159 The power-management is supported.
2161 Module snd-pdaudiocf
2162 --------------------
2164 Module for Sound Core PDAudioCF sound card.
2166 The power-management is supported.
2172 The ac97_quirk option is used to enable/override the workaround for
2173 specific devices on drivers for on-board AC'97 controllers like
2174 snd-intel8x0. Some hardware have swapped output pins between Master
2175 and Headphone, or Surround (thanks to confusion of AC'97
2176 specifications from version to version :-)
2178 The driver provides the auto-detection of known problematic devices,
2179 but some might be unknown or wrongly detected. In such a case, pass
2180 the proper value with this option.
2182 The following strings are accepted:
2183 - default Don't override the default setting
2184 - none Disable the quirk
2185 - hp_only Bind Master and Headphone controls as a single control
2186 - swap_hp Swap headphone and master controls
2187 - swap_surround Swap master and surround controls
2188 - ad_sharing For AD1985, turn on OMS bit and use headphone
2189 - alc_jack For ALC65x, turn on the jack sense mode
2190 - inv_eapd Inverted EAPD implementation
2191 - mute_led Bind EAPD bit for turning on/off mute LED
2193 For backward compatibility, the corresponding integer value -1, 0,
2194 ... are accepted, too.
2196 For example, if "Master" volume control has no effect on your device
2197 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2200 Configuring Non-ISAPNP Cards
2201 ============================
2203 When the kernel is configured with ISA-PnP support, the modules
2204 supporting the isapnp cards will have module options "isapnp".
2205 If this option is set, *only* the ISA-PnP devices will be probed.
2206 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2207 together with the proper i/o and irq configuration.
2209 When the kernel is configured without ISA-PnP support, isapnp option
2210 will be not built in.
2213 Module Autoloading Support
2214 ==========================
2216 The ALSA drivers can be loaded automatically on demand by defining
2217 module aliases. The string 'snd-card-%1' is requested for ALSA native
2218 devices where %i is sound card number from zero to seven.
2220 To auto-load an ALSA driver for OSS services, define the string
2221 'sound-slot-%i' where %i means the slot number for OSS, which
2222 corresponds to the card index of ALSA. Usually, define this
2223 as the same card module.
2225 An example configuration for a single emu10k1 card is like below:
2226 ----- /etc/modprobe.conf
2227 alias snd-card-0 snd-emu10k1
2228 alias sound-slot-0 snd-emu10k1
2229 ----- /etc/modprobe.conf
2231 The available number of auto-loaded sound cards depends on the module
2232 option "cards_limit" of snd module. As default it's set to 1.
2233 To enable the auto-loading of multiple cards, specify the number of
2234 sound cards in that option.
2236 When multiple cards are available, it'd better to specify the index
2237 number for each card via module option, too, so that the order of
2238 cards is kept consistent.
2240 An example configuration for two sound cards is like below:
2242 ----- /etc/modprobe.conf
2244 options snd cards_limit=2
2245 alias snd-card-0 snd-interwave
2246 alias snd-card-1 snd-ens1371
2247 options snd-interwave index=0
2248 options snd-ens1371 index=1
2250 alias sound-slot-0 snd-interwave
2251 alias sound-slot-1 snd-ens1371
2252 ----- /etc/modprobe.conf
2254 In this example, the interwave card is always loaded as the first card
2255 (index 0) and ens1371 as the second (index 1).
2257 Alternative (and new) way to fixate the slot assignment is to use
2258 "slots" option of snd module. In the case above, specify like the
2261 options snd slots=snd-interwave,snd-ens1371
2263 Then, the first slot (#0) is reserved for snd-interwave driver, and
2264 the second (#1) for snd-ens1371. You can omit index option in each
2265 driver if slots option is used (although you can still have them at
2266 the same time as long as they don't conflict).
2268 The slots option is especially useful for avoiding the possible
2269 hot-plugging and the resultant slot conflict. For example, in the
2270 case above again, the first two slots are already reserved. If any
2271 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2272 snd-ens1371, it will be assigned to the third or later slot.
2274 When a module name is given with '!', the slot will be given for any
2275 modules but that name. For example, "slots=!snd-pcsp" will reserve
2276 the first slot for any modules but snd-pcsp.
2279 ALSA PCM devices to OSS devices mapping
2280 =======================================
2282 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2283 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2284 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2285 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2286 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2287 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2288 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2289 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2290 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2292 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2293 sound card number and second means device number. The ALSA devices
2294 have either 'c' or 'p' suffix indicating the direction, capture and
2295 playback, respectively.
2297 Please note that the device mapping above may be varied via the module
2298 options of snd-pcm-oss module.
2301 Proc interfaces (/proc/asound)
2302 ==============================
2304 /proc/asound/card#/pcm#[cp]/oss
2305 -------------------------------
2306 String "erase" - erase all additional informations about OSS applications
2307 String "<app_name> <fragments> <fragment_size> [<options>]"
2309 <app_name> - name of application with (higher priority) or without path
2310 <fragments> - number of fragments or zero if auto
2311 <fragment_size> - size of fragment in bytes or zero if auto
2312 <options> - optional parameters
2313 - disable the application tries to open a pcm device for
2314 this channel but does not want to use it.
2315 (Cause a bug or mmap needs)
2316 It's good for Quake etc...
2317 - direct don't use plugins
2318 - block force block mode (rvplayer)
2319 - non-block force non-block mode
2320 - whole-frag write only whole fragments (optimization affecting
2322 - no-silence do not fill silence ahead to avoid clicks
2323 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2324 instead of filled blocks
2326 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2327 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2328 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2331 Early Buffer Allocation
2332 =======================
2334 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2335 sometimes it's too late to find such spaces when the driver module is
2336 actually loaded due to memory fragmentation. You can pre-allocate the
2337 PCM buffers by loading snd-page-alloc module and write commands to its
2338 proc file in prior, for example, in the early boot stage like
2339 /etc/init.d/*.local scripts.
2341 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2342 usage of page allocation. In writing, you can send the following
2343 commands to the snd-page-alloc driver:
2345 - add VENDOR DEVICE MASK SIZE BUFFERS
2347 VENDOR and DEVICE are PCI vendor and device IDs. They take
2348 integer numbers (0x prefix is needed for the hex).
2349 MASK is the PCI DMA mask. Pass 0 if not restricted.
2350 SIZE is the size of each buffer to allocate. You can pass
2351 k and m suffix for KB and MB. The max number is 16MB.
2352 BUFFERS is the number of buffers to allocate. It must be greater
2353 than 0. The max number is 4.
2357 This will erase the all pre-allocated buffers which are not in
2364 ALSA project homepage
2365 http://www.alsa-project.org
2367 ALSA Bug Tracking System
2368 https://bugtrack.alsa-project.org/bugs/
2371 mailto:alsa-devel@alsa-project.org
git://ftp.safe.ca / safe / jmp / linux-2.6 / blob