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 = none, 2 = POSBUF, 3 = FIFO size)
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
856 auto auto-config reading BIOS (default)
859 3stack-dig 3-jack with SPDIF I/O
860 6stack-dig 6-jack digital with SPDIF I/O
862 targa Targa T8, MSI-1049 T8
865 macpro MacPro support
866 mbp3 Macbook Pro rev3
867 imac24 iMac 24'' with jack detection
869 auto auto-config reading BIOS (default)
872 3stack-dig 3-jack with SPDIF I/O
873 6stack-dig 6-jack digital with SPDIF I/O
874 3stack-6ch 3-jack 6-channel
875 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
876 6stack-dig-demo 6-jack digital for Intel demo board
877 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
878 acer-aspire Acer Aspire 9810
879 medion Medion Laptops
880 medion-md2 Medion MD2
882 targa-2ch-dig Targs/MSI with 2-channel
883 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
884 lenovo-101e Lenovo 101E
885 lenovo-nb0763 Lenovo NB0763
886 lenovo-ms7195-dig Lenovo MS7195
888 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
889 6stack-dell Dell machines with 6stack (Inspiron 530)
891 clevo-m720 Clevo M720 laptop series
892 fujitsu-pi2515 Fujitsu AMILO Pi2515
893 auto auto-config reading BIOS (default)
897 3stack-dig 3-jack with SPDIF I/O
898 6stack-dig 6-jack with SPDIF I/O
899 3stack-660 3-jack (for ALC660)
900 uniwill-m31 Uniwill M31 laptop
901 toshiba Toshiba laptop support
902 asus Asus laptop support
903 asus-laptop ASUS F2/F3 laptops
904 auto auto-config reading BIOS (default)
908 3stack-dig 3-jack with SPDIF OUT
909 6stack-dig 6-jack with SPDIF OUT
910 3stack-660 3-jack (for ALC660VD)
911 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
912 lenovo Lenovo 3000 C200
913 dallas Dallas laptops
915 auto auto-config reading BIOS (default)
918 minimal 3-jack in back
919 min_fp 3-jack in back, 2-jack in front
920 full 6-jack in back, 2-jack in front
921 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
922 allout 5-jack in back, 2-jack in front, SPDIF out
923 auto auto-config reading BIOS (default)
926 3stack 3-stack mode (default)
929 AD1884A / AD1883 / AD1984A / AD1984B
930 desktop 3-stack desktop (default)
931 laptop laptop with HP jack sensing
932 mobile mobile devices with HP jack sensing
933 thinkpad Lenovo Thinkpad X300
939 basic 3-jack (default)
941 thinkpad Lenovo Thinkpad T60/X60/Z60
948 basic default configuration
949 thinkpad Lenovo Thinkpad T61/X61
953 6stack 6-jack, separate surrounds (default)
954 3stack 3-stack, shared surrounds
955 laptop 2-channel only (FSC V2060, Samsung M50)
956 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
957 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
958 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
960 AD1988/AD1988B/AD1989A/AD1989B
962 6stack-dig ditto with SPDIF
964 3stack-dig ditto with SPDIF
965 laptop 3-jack with hp-jack automute
966 laptop-dig ditto with SPDIF
967 auto auto-config reading BIOS (default)
970 laptop-hpsense Laptop with HP sense (old model laptop)
971 laptop-micsense Laptop with Mic sense (old model fujitsu)
972 laptop-hpmicsense Laptop with HP and Mic senses
974 test for testing/debugging purpose, almost all controls
975 can be adjusted. Appearing only when compiled with
979 laptop Basic Laptop config
980 laptop-hp Laptop config for some HP models (subdevice 30A5)
981 laptop-eapd Laptop config with EAPD support
982 test for testing/debugging purpose, almost all controls
983 can be adjusted. Appearing only when compiled with
987 laptop Basic Laptop config (default)
992 dell-d21 Dell (unknown)
993 dell-d22 Dell (unknown)
994 dell-d23 Dell (unknown)
995 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
996 dell-m22 Dell Latitude D620, Dell Latitude D820
997 dell-m23 Dell XPS M1710, Dell Precision M90
998 dell-m24 Dell Latitude 120L
999 dell-m25 Dell Inspiron E1505n
1000 dell-m26 Dell Inspiron 1501
1001 dell-m27 Dell Inspiron E1705/9400
1002 gateway Gateway laptops with EAPD control
1003 panasonic Panasonic CF-74
1007 dell-m42 Dell (unknown)
1008 dell-m43 Dell Precision
1009 dell-m44 Dell Inspiron
1014 5stack D945 5stack + SPDIF
1015 intel-mac-v1 Intel Mac Type 1
1016 intel-mac-v2 Intel Mac Type 2
1017 intel-mac-v3 Intel Mac Type 3
1018 intel-mac-v4 Intel Mac Type 4
1019 intel-mac-v5 Intel Mac Type 5
1020 macmini Intel Mac Mini (equivalent with type 3)
1021 macbook Intel Mac Book (eq. type 5)
1022 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1023 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1024 imac-intel Intel iMac (eq. type 2)
1025 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1026 dell-d81 Dell (unknown)
1027 dell-d82 Dell (unknown)
1028 dell-m81 Dell (unknown)
1029 dell-m82 Dell XPS M1210
1032 ref Reference board, base config
1033 m2-2 Some Gateway MX series laptops
1034 m6 Some Gateway NX series laptops
1035 pa6 Gateway NX860 series
1037 STAC9227/9228/9229/927x
1040 5stack D965 5stack + SPDIF
1041 dell-3stack Dell Dimension E520
1042 dell-bios Fixes with Dell BIOS setup
1046 dell-m4-1 Dell desktops
1047 dell-m4-2 Dell desktops
1051 dell-m6 Dell desktops
1054 vaio Setup for VAIO FE550G/SZ110
1055 vaio-ar Setup for VAIO AR
1057 The model name "genric" is treated as a special case. When this
1058 model is given, the driver uses the generic codec parser without
1059 "codec-patch". It's sometimes good for testing and debugging.
1061 If the default configuration doesn't work and one of the above
1062 matches with your device, report it together with the PCI
1063 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1064 ML (see the section "Links and Addresses").
1066 power_save and power_save_controller options are for power-saving
1067 mode. See powersave.txt for details.
1069 Note 2: If you get click noises on output, try the module option
1070 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1071 register value without FIFO size correction as the current
1072 DMA pointer. position_fix=2 will make the driver to use
1073 the position buffer instead of reading SD_LPIB register.
1074 (Usually SD_LPLIB register is more accurate than the
1077 NB: If you get many "azx_get_response timeout" messages at
1078 loading, it's likely a problem of interrupts (e.g. ACPI irq
1079 routing). Try to boot with options like "pci=noacpi". Also, you
1080 can try "single_cmd=1" module option. This will switch the
1081 communication method between HDA controller and codecs to the
1082 single immediate commands instead of CORB/RIRB. Basically, the
1083 single command mode is provided only for BIOS, and you won't get
1084 unsolicited events, too. But, at least, this works independently
1085 from the irq. Remember this is a last resort, and should be
1086 avoided as much as possible...
1088 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1089 On some hardwares, you may need to add a proper probe_mask option
1090 to avoid the "azx_get_response timeout" problem above, instead.
1091 This occurs when the access to non-existing or non-working codec slot
1092 (likely a modem one) causes a stall of the communication via HD-audio
1093 bus. You can see which codec slots are probed by enabling
1094 CONFIG_SND_DEBUG_DETECT, or simply from the file name of the codec
1095 proc files. Then limit the slots to probe by probe_mask option.
1096 For example, probe_mask=1 means to probe only the first slot, and
1097 probe_mask=4 means only the third slot.
1099 The power-management is supported.
1104 Module for RME Hammerfall DSP audio interface(s)
1106 This module supports multiple cards.
1108 Note: The firmware data can be automatically loaded via hotplug
1109 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1110 the firmware via hdsploader utility included in alsa-tools
1112 The firmware data is found in alsa-firmware package.
1114 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1115 module did formerly. It will allocate the buffers in advance
1116 when any HDSP cards are found. To make the buffer
1117 allocation sure, load snd-page-alloc module in the early
1118 stage of boot sequence. See "Early Buffer Allocation"
1124 Module for RME HDSP MADI board.
1126 precise_ptr - Enable precise pointer, or disable.
1127 line_outs_monitor - Send playback streams to analog outs by default.
1128 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1130 See hdspm.txt for details.
1135 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1137 This module supports autoprobe and multiple cards.
1139 Power management is _not_ supported.
1144 Module for Envy24 (ICE1712) based PCI sound cards.
1145 * MidiMan M Audio Delta 1010
1146 * MidiMan M Audio Delta 1010LT
1147 * MidiMan M Audio Delta DiO 2496
1148 * MidiMan M Audio Delta 66
1149 * MidiMan M Audio Delta 44
1150 * MidiMan M Audio Delta 410
1151 * MidiMan M Audio Audiophile 2496
1154 * TerraTec EWX 24/96
1155 * TerraTec DMX 6Fire
1157 * Hoontech SoundTrack DSP 24
1158 * Hoontech SoundTrack DSP 24 Value
1159 * Hoontech SoundTrack DSP 24 Media 7.1
1160 * Event Electronics, EZ8
1162 * Lionstracs, Mediastaton
1164 model - Use the given board model, one of the following:
1165 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1166 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1167 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1168 phase88, mediastation
1169 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1170 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1171 in msec resolution, default value is 500 (0.5 sec)
1173 This module supports multiple cards and autoprobe. Note: The consumer part
1174 is not used with all Envy24 based cards (for example in the MidiMan Delta
1177 Note: The supported board is detected by reading EEPROM or PCI
1178 SSID (if EEPROM isn't available). You can override the
1179 model by passing "model" module option in case that the
1180 driver isn't configured properly or you want to try another
1186 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1187 * MidiMan M Audio Revolution 5.1
1188 * MidiMan M Audio Revolution 7.1
1189 * MidiMan M Audio Audiophile 192
1191 * TerraTec Aureon 5.1 Sky
1192 * TerraTec Aureon 7.1 Space
1193 * TerraTec Aureon 7.1 Universe
1196 * AudioTrak Prodigy 7.1
1197 * AudioTrak Prodigy 7.1LT
1198 * AudioTrak Prodigy 192
1200 * Albatron K8X800 Pro II
1201 * Chaintech ZNF3-150
1202 * Chaintech ZNF3-250
1209 model - Use the given board model, one of the following:
1210 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1211 prodigy192, aureon51, aureon71, universe, ap192,
1212 k8x800, phase22, phase28, ms300, av710, se200pci,
1215 This module supports multiple cards and autoprobe.
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 Echoaudio Indigo
1228 This module supports multiple cards.
1229 The driver requires the firmware loader support on kernel.
1234 Module for Echoaudio Indigo DJ
1236 This module supports multiple cards.
1237 The driver requires the firmware loader support on kernel.
1242 Module for Echoaudio Indigo IO
1244 This module supports multiple cards.
1245 The driver requires the firmware loader support on kernel.
1250 Module for AC'97 motherboards from Intel and compatibles.
1251 * Intel i810/810E, i815, i820, i830, i84x, MX440
1252 ICH5, ICH6, ICH7, ESB2
1253 * SiS 7012 (SiS 735)
1254 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1256 * AMD AMD768, AMD8111
1259 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1260 ac97_quirk - AC'97 workaround for strange hardware
1261 See "AC97 Quirk Option" section below.
1262 buggy_irq - Enable workaround for buggy interrupts on some
1263 motherboards (default yes on nForce chips,
1265 buggy_semaphore - Enable workaround for hardwares with buggy
1266 semaphores (e.g. on some ASUS laptops)
1268 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1269 from the controller chip
1270 (0 = off, 1 = on, -1 = default)
1272 This module supports one chip and autoprobe.
1274 Note: the latest driver supports auto-detection of chip clock.
1275 if you still encounter too fast playback, specify the clock
1276 explicitly via the module option "ac97_clock=41194".
1278 Joystick/MIDI ports are not supported by this driver. If your
1279 motherboard has these devices, use the ns558 or snd-mpu401
1280 modules, respectively.
1282 The power-management is supported.
1284 Module snd-intel8x0m
1285 --------------------
1287 Module for Intel ICH (i8x0) chipset MC97 modems.
1288 * Intel i810/810E, i815, i820, i830, i84x, MX440
1290 * SiS 7013 (SiS 735)
1291 * NVidia NForce, NForce2, NForce2s, NForce3
1295 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1297 This module supports one card and autoprobe.
1299 Note: The default index value of this module is -2, i.e. the first
1302 The power-management is supported.
1304 Module snd-interwave
1305 --------------------
1307 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1308 and other sound cards based on AMD InterWave (tm) chip.
1310 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1311 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1312 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1313 effect - 1 = InterWave effects enable (default 0);
1315 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1317 with isapnp=0, the following options are available:
1319 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1320 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1321 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1322 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1324 This module supports multiple cards, autoprobe and ISA PnP.
1326 Module snd-interwave-stb
1327 ------------------------
1329 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1330 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1331 circuit for extended control of bass, treble and master volume.
1333 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1334 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1335 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1336 effect - 1 = InterWave effects enable (default 0);
1338 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1340 with isapnp=0, the following options are available:
1342 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1343 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1344 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1345 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1346 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1348 This module supports multiple cards, autoprobe and ISA PnP.
1353 Module for Korg 1212 IO PCI card
1355 This module supports multiple cards.
1360 Module for Echoaudio Layla20
1362 This module supports multiple cards.
1363 The driver requires the firmware loader support on kernel.
1368 Module for Echoaudio Layla24
1370 This module supports multiple cards.
1371 The driver requires the firmware loader support on kernel.
1376 Module for Allegro/Maestro3 chips
1378 external_amp - enable external amp (enabled by default)
1379 amp_gpio - GPIO pin number for external amp (0-15) or
1380 -1 for default pin (8 for allegro, 1 for
1383 This module supports autoprobe and multiple chips.
1385 Note: the binding of amplifier is dependent on hardware.
1386 If there is no sound even though all channels are unmuted, try to
1387 specify other gpio connection via amp_gpio option.
1388 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1391 The power-management is supported.
1396 Module for Echoaudio Mia
1398 This module supports multiple cards.
1399 The driver requires the firmware loader support on kernel.
1404 Module for Miro soundcards: miroSOUND PCM 1 pro,
1406 miroSOUND PCM 20 Radio.
1408 port - Port # (0x530,0x604,0xe80,0xf40)
1409 irq - IRQ # (5,7,9,10,11)
1410 dma1 - 1st dma # (0,1,3)
1411 dma2 - 2nd dma # (0,1)
1412 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1413 mpu_irq - MPU-401 irq # (5,7,9,10)
1414 fm_port - FM Port # (0x388)
1415 wss - enable WSS mode
1416 ide - enable onboard ide support
1421 Module for Digigram miXart8 sound cards.
1423 This module supports multiple cards.
1424 Note: One miXart8 board will be represented as 4 alsa cards.
1425 See MIXART.txt for details.
1427 When the driver is compiled as a module and the hotplug firmware
1428 is supported, the firmware data is loaded via hotplug automatically.
1429 Install the necessary firmware files in alsa-firmware package.
1430 When no hotplug fw loader is available, you need to load the
1431 firmware via mixartloader utility in alsa-tools package.
1436 Module for Echoaudio Mona
1438 This module supports multiple cards.
1439 The driver requires the firmware loader support on kernel.
1444 Module for MPU-401 UART devices.
1446 port - port number or -1 (disable)
1447 irq - IRQ number or -1 (disable)
1448 pnp - PnP detection - 0 = disable, 1 = enable (default)
1450 This module supports multiple devices and PnP.
1455 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1458 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1459 irq - IRQ # for MTPAV (7,5, default=7)
1460 hwports - number of supported hardware ports, default=8.
1462 Module supports only 1 card. This module has no enable option.
1467 Module for Ego Systems (ESI) Miditerminal 4140
1469 This module supports multiple devices.
1470 Requires parport (CONFIG_PARPORT).
1475 Module for NeoMagic NM256AV/ZX chips
1477 playback_bufsize - max playback frame size in kB (4-128kB)
1478 capture_bufsize - max capture frame size in kB (4-128kB)
1479 force_ac97 - 0 or 1 (disabled by default)
1480 buffer_top - specify buffer top address
1481 use_cache - 0 or 1 (disabled by default)
1482 vaio_hack - alias buffer_top=0x25a800
1483 reset_workaround - enable AC97 RESET workaround for some laptops
1484 reset_workaround2 - enable extended AC97 RESET workaround for some
1487 This module supports one chip and autoprobe.
1489 The power-management is supported.
1491 Note: on some notebooks the buffer address cannot be detected
1492 automatically, or causes hang-up during initialization.
1493 In such a case, specify the buffer top address explicitly via
1494 the buffer_top option.
1496 Sony F250: buffer_top=0x25a800
1497 Sony F270: buffer_top=0x272800
1498 The driver supports only ac97 codec. It's possible to force
1499 to initialize/use ac97 although it's not detected. In such a
1500 case, use force_ac97=1 option - but *NO* guarantee whether it
1503 Note: The NM256 chip can be linked internally with non-AC97
1504 codecs. This driver supports only the AC97 codec, and won't work
1505 with machines with other (most likely CS423x or OPL3SAx) chips,
1506 even though the device is detected in lspci. In such a case, try
1507 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1508 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1509 and proper hardware parameters in the case without ISA PnP.
1511 Note: some laptops need a workaround for AC97 RESET. For the
1512 known hardware like Dell Latitude LS and Sony PCG-F305, this
1513 workaround is enabled automatically. For other laptops with a
1514 hard freeze, you can try reset_workaround=1 option.
1516 Note: Dell Latitude CSx laptops have another problem regarding
1517 AC97 RESET. On these laptops, reset_workaround2 option is
1518 turned on as default. This option is worth to try if the
1519 previous reset_workaround option doesn't help.
1521 Note: This driver is really crappy. It's a porting from the
1522 OSS driver, which is a result of black-magic reverse engineering.
1523 The detection of codec will fail if the driver is loaded *after*
1524 X-server as described above. You might be able to force to load
1525 the module, but it may result in hang-up. Hence, make sure that
1526 you load this module *before* X if you encounter this kind of
1532 Module for Yamaha OPL3-SA2/SA3 sound cards.
1534 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1536 with isapnp=0, the following options are available:
1538 port - control port # for OPL3-SA chip (0x370)
1539 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1540 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1541 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1542 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1543 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1544 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1545 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1547 This module supports multiple cards and ISA PnP. It does not support
1548 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1550 The power-management is supported.
1552 Module snd-opti92x-ad1848
1553 -------------------------
1555 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1556 Module works with OAK Mozart cards as well.
1558 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1560 with isapnp=0, the following options are available:
1562 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1563 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1564 fm_port - port # for OPL3 device (0x388)
1565 irq - IRQ # for WSS chip (5,7,9,10,11)
1566 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1567 dma1 - first DMA # for WSS chip (0,1,3)
1569 This module supports only one card, autoprobe and PnP.
1571 Module snd-opti92x-cs4231
1572 -------------------------
1574 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1576 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1578 with isapnp=0, the following options are available:
1580 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1581 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1582 fm_port - port # for OPL3 device (0x388)
1583 irq - IRQ # for WSS chip (5,7,9,10,11)
1584 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1585 dma1 - first DMA # for WSS chip (0,1,3)
1586 dma2 - second DMA # for WSS chip (0,1,3)
1588 This module supports only one card, autoprobe and PnP.
1593 Module for sound cards based on OPTi 82c93x chips.
1595 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1597 with isapnp=0, the following options are available:
1599 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1600 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1601 fm_port - port # for OPL3 device (0x388)
1602 irq - IRQ # for WSS chip (5,7,9,10,11)
1603 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1604 dma1 - first DMA # for WSS chip (0,1,3)
1605 dma2 - second DMA # for WSS chip (0,1,3)
1607 This module supports only one card, autoprobe and PnP.
1612 Module for sound cards based on the C-Media CMI8788 chip:
1614 * AuzenTech X-Meridian
1616 * Club3D Theatron DTS
1618 * Razer Barracuda AC-1
1621 This module supports autoprobe and multiple cards.
1623 Power management is _not_ supported.
1628 Module for internal PC-Speaker.
1630 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1632 This module supports system beeps, some kind of PCM playback and
1633 even a few mixer controls.
1638 Module for Digigram PCXHR boards
1640 This module supports multiple cards.
1642 Module snd-portman2x4
1643 ---------------------
1645 Module for Midiman Portman 2x4 parallel port MIDI interface
1647 This module supports multiple cards.
1649 Module snd-powermac (on ppc only)
1650 ---------------------------------
1652 Module for PowerMac, iMac and iBook on-board soundchips
1654 enable_beep - enable beep using PCM (enabled as default)
1656 Module supports autoprobe a chip.
1658 Note: the driver may have problems regarding endianess.
1660 The power-management is supported.
1662 Module snd-pxa2xx-ac97 (on arm only)
1663 ------------------------------------
1665 Module for AC97 driver for the Intel PXA2xx chip
1667 For ARM architecture only.
1669 The power-management is supported.
1674 Module for Conexant Riptide chip
1676 joystick_port - Joystick port # (default: 0x200)
1677 mpu_port - MPU401 port # (default: 0x330)
1678 opl3_port - OPL3 port # (default: 0x388)
1680 This module supports multiple cards.
1681 The driver requires the firmware loader support on kernel.
1682 You need to install the firmware file "riptide.hex" to the standard
1683 firmware path (e.g. /lib/firmware).
1688 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1689 Prodif96 and Prodif Gold) sound cards.
1691 This module supports multiple cards.
1696 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1698 This module supports multiple cards.
1703 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1705 precise_ptr - Enable precise pointer (doesn't work reliably).
1708 This module supports multiple cards.
1710 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1711 module did formerly. It will allocate the buffers in advance
1712 when any RME9652 cards are found. To make the buffer
1713 allocation sure, load snd-page-alloc module in the early
1714 stage of boot sequence. See "Early Buffer Allocation"
1717 Module snd-sa11xx-uda1341 (on arm only)
1718 ---------------------------------------
1720 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1722 Module supports only one card.
1723 Module has no enable and index options.
1725 The power-management is supported.
1730 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1734 port - port # for SB DSP chip (0x220,0x240,0x260)
1735 irq - IRQ # for SB DSP chip (5,7,9,10)
1736 dma8 - DMA # for SB DSP chip (1,3)
1738 This module supports multiple cards and autoprobe.
1740 The power-management is supported.
1742 Module snd-sb16 and snd-sbawe
1743 -----------------------------
1745 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1746 SoundBlaster AWE 32 (PnP),
1747 SoundBlaster AWE 64 PnP
1749 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1750 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1751 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1753 with isapnp=0, the following options are available:
1755 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1756 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1757 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1758 (snd-sbawe module only)
1759 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1760 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1761 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1763 This module supports multiple cards, autoprobe and ISA PnP.
1765 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1766 disable 16bit DMA with dma16 = -1 module parameter.
1767 Also, all Sound Blaster 16 type cards can operate in 16-bit
1768 half duplex mode through 8-bit DMA channel by disabling their
1771 The power-management is supported.
1776 Module for Gallant SC-6000 soundcard.
1778 port - Port # (0x220 or 0x240)
1779 mss_port - MSS Port # (0x530 or 0xe80)
1780 irq - IRQ # (5,7,9,10,11)
1781 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1784 This module supports multiple cards.
1786 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1791 Module for Aztech Sound Galaxy sound card.
1793 sbport - Port # for SB16 interface (0x220,0x240)
1794 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1795 irq - IRQ # (7,9,10,11)
1798 This module supports multiple cards.
1800 The power-management is supported.
1805 Module for ENSONIQ SoundScape PnP cards.
1807 port - Port # (PnP setup)
1808 wss_port - WSS Port # (PnP setup)
1809 irq - IRQ # (PnP setup)
1810 mpu_irq - MPU-401 IRQ # (PnP setup)
1811 dma - DMA # (PnP setup)
1812 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1814 This module supports multiple cards. ISA PnP must be enabled.
1815 You need sscape_ctl tool in alsa-tools package for loading
1818 Module snd-sun-amd7930 (on sparc only)
1819 --------------------------------------
1821 Module for AMD7930 sound chips found on Sparcs.
1823 This module supports multiple cards.
1825 Module snd-sun-cs4231 (on sparc only)
1826 -------------------------------------
1828 Module for CS4231 sound chips found on Sparcs.
1830 This module supports multiple cards.
1832 Module snd-sun-dbri (on sparc only)
1833 -----------------------------------
1835 Module for DBRI sound chips found on Sparcs.
1837 This module supports multiple cards.
1839 Module snd-wavefront
1840 --------------------
1842 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1844 use_cs4232_midi - Use CS4232 MPU-401 interface
1845 (inaccessibly located inside your computer)
1846 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1848 with isapnp=0, the following options are available:
1850 cs4232_pcm_port - Port # for CS4232 PCM interface.
1851 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1852 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1853 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1854 ics2115_port - Port # for ICS2115
1855 ics2115_irq - IRQ # for ICS2115
1856 fm_port - FM OPL-3 Port #
1857 dma1 - DMA1 # for CS4232 PCM interface.
1858 dma2 - DMA2 # for CS4232 PCM interface.
1860 The below are options for wavefront_synth features:
1861 wf_raw - Assume that we need to boot the OS (default:no)
1862 If yes, then during driver loading, the state of the board is
1863 ignored, and we reset the board and load the firmware anyway.
1864 fx_raw - Assume that the FX process needs help (default:yes)
1865 If false, we'll leave the FX processor in whatever state it is
1866 when the driver is loaded. The default is to download the
1867 microprogram and associated coefficients to set it up for
1868 "default" operation, whatever that means.
1869 debug_default - Debug parameters for card initialization
1870 wait_usecs - How long to wait without sleeping, usecs
1872 This magic number seems to give pretty optimal throughput
1873 based on my limited experimentation.
1874 If you want to play around with it and find a better value, be
1875 my guest. Remember, the idea is to get a number that causes us
1876 to just busy wait for as many WaveFront commands as possible,
1877 without coming up with a number so large that we hog the whole
1879 Specifically, with this number, out of about 134,000 status
1880 waits, only about 250 result in a sleep.
1881 sleep_interval - How long to sleep when waiting for reply
1883 sleep_tries - How many times to try sleeping during a wait
1885 ospath - Pathname to processed ICS2115 OS firmware
1886 (default:wavefront.os)
1887 The path name of the ISC2115 OS firmware. In the recent
1888 version, it's handled via firmware loader framework, so it
1889 must be installed in the proper path, typically,
1891 reset_time - How long to wait for a reset to take effect
1893 ramcheck_time - How many seconds to wait for the RAM test
1895 osrun_time - How many seconds to wait for the ICS2115 OS
1898 This module supports multiple cards and ISA PnP.
1900 Note: the firmware file "wavefront.os" was located in the earlier
1901 version in /etc. Now it's loaded via firmware loader, and
1902 must be in the proper firmware path, such as /lib/firmware.
1903 Copy (or symlink) the file appropriately if you get an error
1904 regarding firmware downloading after upgrading the kernel.
1906 Module snd-sonicvibes
1907 ---------------------
1909 Module for S3 SonicVibes PCI sound cards.
1910 * PINE Schubert 32 PCI
1912 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1913 - SoundCard must have onboard SRAM for this.
1914 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1916 This module supports multiple cards and autoprobe.
1918 Module snd-serial-u16550
1919 ------------------------
1921 Module for UART16550A serial MIDI ports.
1923 port - port # for UART16550A chip
1924 irq - IRQ # for UART16550A chip, -1 = poll mode
1925 speed - speed in bauds (9600,19200,38400,57600,115200)
1927 base - base for divisor in bauds (57600,115200,230400,460800)
1929 outs - number of MIDI ports in a serial port (1-4)
1931 adaptor - Type of adaptor.
1932 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1933 3 = MS-124W M/B, 4 = Generic
1935 This module supports multiple cards. This module does not support autoprobe
1936 thus the main port must be specified!!! Other options are optional.
1941 Module for Trident 4DWave DX/NX sound cards.
1942 * Best Union Miss Melody 4DWave PCI
1944 * Warpspeed ONSpeed 4DWave PCI
1947 * CHIC True Sound 4Dwave
1948 * Shark Predator4D-PCI
1949 * Jaton SonicWave 4D
1951 pcm_channels - max channels (voices) reserved for PCM
1952 wavetable_size - max wavetable size in kB (4-?kb)
1954 This module supports multiple cards and autoprobe.
1956 The power-management is supported.
1958 Module snd-usb-audio
1959 --------------------
1961 Module for USB audio and USB MIDI devices.
1963 vid - Vendor ID for the device (optional)
1964 pid - Product ID for the device (optional)
1965 device_setup - Device specific magic number (optional)
1966 - Influence depends on the device
1969 This module supports multiple devices, autoprobe and hotplugging.
1971 Module snd-usb-caiaq
1972 --------------------
1974 Module for caiaq UB audio interfaces,
1975 * Native Instruments RigKontrol2
1976 * Native Instruments Kore Controller
1977 * Native Instruments Audio Kontrol 1
1978 * Native Instruments Audio 8 DJ
1980 This module supports multiple devices, autoprobe and hotplugging.
1982 Module snd-usb-usx2y
1983 --------------------
1985 Module for Tascam USB US-122, US-224 and US-428 devices.
1987 This module supports multiple devices, autoprobe and hotplugging.
1989 Note: you need to load the firmware via usx2yloader utility included
1990 in alsa-tools and alsa-firmware packages.
1995 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1996 8233A, 8233C, 8235, 8237 (south) bridge.
1998 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2000 joystick - Enable joystick (default off) [VIA686A/686B only]
2001 ac97_clock - AC'97 codec clock base (default 48000Hz)
2002 dxs_support - support DXS channels,
2003 0 = auto (default), 1 = enable, 2 = disable,
2004 3 = 48k only, 4 = no VRA, 5 = enable any sample
2005 rate and different sample rates on different
2007 [VIA8233/C, 8235, 8237 only]
2008 ac97_quirk - AC'97 workaround for strange hardware
2009 See "AC97 Quirk Option" section below.
2011 This module supports one chip and autoprobe.
2013 Note: on some SMP motherboards like MSI 694D the interrupts might
2014 not be generated properly. In such a case, please try to
2015 set the SMP (or MPS) version on BIOS to 1.1 instead of
2016 default value 1.4. Then the interrupt number will be
2017 assigned under 15. You might also upgrade your BIOS.
2019 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2020 channels as the first PCM. On these channels, up to 4
2021 streams can be played at the same time, and the controller
2022 can perform sample rate conversion with separate rates for
2024 As default (dxs_support = 0), 48k fixed rate is chosen
2025 except for the known devices since the output is often
2026 noisy except for 48k on some mother boards due to the
2028 Please try once dxs_support=5 and if it works on other
2029 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2030 know the PCI subsystem vendor/device id's (output of
2032 If dxs_support=5 does not work, try dxs_support=4; if it
2033 doesn't work too, try dxs_support=1. (dxs_support=1 is
2034 usually for old motherboards. The correct implemented
2035 board should work with 4 or 5.) If it still doesn't
2036 work and the default setting is ok, dxs_support=3 is the
2037 right choice. If the default setting doesn't work at all,
2038 try dxs_support=2 to disable the DXS channels.
2039 In any cases, please let us know the result and the
2040 subsystem vendor/device ids. See "Links and Addresses"
2043 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2044 additionally. The mpu_port option is for VIA686 chips only.
2046 The power-management is supported.
2048 Module snd-via82xx-modem
2049 ------------------------
2051 Module for VIA82xx AC97 modem
2053 ac97_clock - AC'97 codec clock base (default 48000Hz)
2055 This module supports one card and autoprobe.
2057 Note: The default index value of this module is -2, i.e. the first
2060 The power-management is supported.
2065 Module for virtual rawmidi devices.
2066 This module creates virtual rawmidi devices which communicate
2067 to the corresponding ALSA sequencer ports.
2069 midi_devs - MIDI devices # (1-4, default=4)
2071 This module supports multiple cards.
2076 Module for sound cards based on the Asus AV200 chip, i.e.,
2077 Xonar D2 and Xonar D2X.
2079 This module supports autoprobe and multiple cards.
2081 Power management is _not_ supported.
2086 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2088 mic - Enable Microphone on V222 Mic (NYI)
2089 ibl - Capture IBL size. (default = 0, minimum size)
2091 This module supports multiple cards.
2093 When the driver is compiled as a module and the hotplug firmware
2094 is supported, the firmware data is loaded via hotplug automatically.
2095 Install the necessary firmware files in alsa-firmware package.
2096 When no hotplug fw loader is available, you need to load the
2097 firmware via vxloader utility in alsa-tools package. To invoke
2098 vxloader automatically, add the following to /etc/modprobe.conf
2100 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2102 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2103 /etc/modules.conf, instead.)
2104 IBL size defines the interrupts period for PCM. The smaller size
2105 gives smaller latency but leads to more CPU consumption, too.
2106 The size is usually aligned to 126. As default (=0), the smallest
2107 size is chosen. The possible IBL values can be found in
2108 /proc/asound/cardX/vx-status proc file.
2110 The power-management is supported.
2115 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2117 ibl - Capture IBL size. (default = 0, minimum size)
2119 This module supports multiple cards. The module is compiled only when
2120 PCMCIA is supported on kernel.
2122 With the older 2.6.x kernel, to activate the driver via the card
2123 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2124 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2125 longer require a config file.
2127 When the driver is compiled as a module and the hotplug firmware
2128 is supported, the firmware data is loaded via hotplug automatically.
2129 Install the necessary firmware files in alsa-firmware package.
2130 When no hotplug fw loader is available, you need to load the
2131 firmware via vxloader utility in alsa-tools package.
2133 About capture IBL, see the description of snd-vx222 module.
2135 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2138 The power-management is supported.
2143 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2145 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2146 1 (auto-detect for YMF744/754 only)
2147 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2148 1 (auto-detect for YMF744/754 only)
2149 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2151 rear_switch - enable shared rear/line-in switch (bool)
2153 This module supports autoprobe and multiple chips.
2155 The power-management is supported.
2157 Module snd-pdaudiocf
2158 --------------------
2160 Module for Sound Core PDAudioCF sound card.
2162 The power-management is supported.
2168 The ac97_quirk option is used to enable/override the workaround for
2169 specific devices on drivers for on-board AC'97 controllers like
2170 snd-intel8x0. Some hardware have swapped output pins between Master
2171 and Headphone, or Surround (thanks to confusion of AC'97
2172 specifications from version to version :-)
2174 The driver provides the auto-detection of known problematic devices,
2175 but some might be unknown or wrongly detected. In such a case, pass
2176 the proper value with this option.
2178 The following strings are accepted:
2179 - default Don't override the default setting
2180 - none Disable the quirk
2181 - hp_only Bind Master and Headphone controls as a single control
2182 - swap_hp Swap headphone and master controls
2183 - swap_surround Swap master and surround controls
2184 - ad_sharing For AD1985, turn on OMS bit and use headphone
2185 - alc_jack For ALC65x, turn on the jack sense mode
2186 - inv_eapd Inverted EAPD implementation
2187 - mute_led Bind EAPD bit for turning on/off mute LED
2189 For backward compatibility, the corresponding integer value -1, 0,
2190 ... are accepted, too.
2192 For example, if "Master" volume control has no effect on your device
2193 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2196 Configuring Non-ISAPNP Cards
2197 ============================
2199 When the kernel is configured with ISA-PnP support, the modules
2200 supporting the isapnp cards will have module options "isapnp".
2201 If this option is set, *only* the ISA-PnP devices will be probed.
2202 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2203 together with the proper i/o and irq configuration.
2205 When the kernel is configured without ISA-PnP support, isapnp option
2206 will be not built in.
2209 Module Autoloading Support
2210 ==========================
2212 The ALSA drivers can be loaded automatically on demand by defining
2213 module aliases. The string 'snd-card-%1' is requested for ALSA native
2214 devices where %i is sound card number from zero to seven.
2216 To auto-load an ALSA driver for OSS services, define the string
2217 'sound-slot-%i' where %i means the slot number for OSS, which
2218 corresponds to the card index of ALSA. Usually, define this
2219 as the same card module.
2221 An example configuration for a single emu10k1 card is like below:
2222 ----- /etc/modprobe.conf
2223 alias snd-card-0 snd-emu10k1
2224 alias sound-slot-0 snd-emu10k1
2225 ----- /etc/modprobe.conf
2227 The available number of auto-loaded sound cards depends on the module
2228 option "cards_limit" of snd module. As default it's set to 1.
2229 To enable the auto-loading of multiple cards, specify the number of
2230 sound cards in that option.
2232 When multiple cards are available, it'd better to specify the index
2233 number for each card via module option, too, so that the order of
2234 cards is kept consistent.
2236 An example configuration for two sound cards is like below:
2238 ----- /etc/modprobe.conf
2240 options snd cards_limit=2
2241 alias snd-card-0 snd-interwave
2242 alias snd-card-1 snd-ens1371
2243 options snd-interwave index=0
2244 options snd-ens1371 index=1
2246 alias sound-slot-0 snd-interwave
2247 alias sound-slot-1 snd-ens1371
2248 ----- /etc/modprobe.conf
2250 In this example, the interwave card is always loaded as the first card
2251 (index 0) and ens1371 as the second (index 1).
2253 Alternative (and new) way to fixate the slot assignment is to use
2254 "slots" option of snd module. In the case above, specify like the
2257 options snd slots=snd-interwave,snd-ens1371
2259 Then, the first slot (#0) is reserved for snd-interwave driver, and
2260 the second (#1) for snd-ens1371. You can omit index option in each
2261 driver if slots option is used (although you can still have them at
2262 the same time as long as they don't conflict).
2264 The slots option is especially useful for avoiding the possible
2265 hot-plugging and the resultant slot conflict. For example, in the
2266 case above again, the first two slots are already reserved. If any
2267 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2268 snd-ens1371, it will be assigned to the third or later slot.
2271 ALSA PCM devices to OSS devices mapping
2272 =======================================
2274 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2275 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2276 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2277 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2278 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2279 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2280 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2281 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2282 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2284 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2285 sound card number and second means device number. The ALSA devices
2286 have either 'c' or 'p' suffix indicating the direction, capture and
2287 playback, respectively.
2289 Please note that the device mapping above may be varied via the module
2290 options of snd-pcm-oss module.
2293 Proc interfaces (/proc/asound)
2294 ==============================
2296 /proc/asound/card#/pcm#[cp]/oss
2297 -------------------------------
2298 String "erase" - erase all additional informations about OSS applications
2299 String "<app_name> <fragments> <fragment_size> [<options>]"
2301 <app_name> - name of application with (higher priority) or without path
2302 <fragments> - number of fragments or zero if auto
2303 <fragment_size> - size of fragment in bytes or zero if auto
2304 <options> - optional parameters
2305 - disable the application tries to open a pcm device for
2306 this channel but does not want to use it.
2307 (Cause a bug or mmap needs)
2308 It's good for Quake etc...
2309 - direct don't use plugins
2310 - block force block mode (rvplayer)
2311 - non-block force non-block mode
2312 - whole-frag write only whole fragments (optimization affecting
2314 - no-silence do not fill silence ahead to avoid clicks
2315 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2316 instead of filled blocks
2318 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2319 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2320 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2323 Early Buffer Allocation
2324 =======================
2326 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2327 sometimes it's too late to find such spaces when the driver module is
2328 actually loaded due to memory fragmentation. You can pre-allocate the
2329 PCM buffers by loading snd-page-alloc module and write commands to its
2330 proc file in prior, for example, in the early boot stage like
2331 /etc/init.d/*.local scripts.
2333 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2334 usage of page allocation. In writing, you can send the following
2335 commands to the snd-page-alloc driver:
2337 - add VENDOR DEVICE MASK SIZE BUFFERS
2339 VENDOR and DEVICE are PCI vendor and device IDs. They take
2340 integer numbers (0x prefix is needed for the hex).
2341 MASK is the PCI DMA mask. Pass 0 if not restricted.
2342 SIZE is the size of each buffer to allocate. You can pass
2343 k and m suffix for KB and MB. The max number is 16MB.
2344 BUFFERS is the number of buffers to allocate. It must be greater
2345 than 0. The max number is 4.
2349 This will erase the all pre-allocated buffers which are not in
2356 ALSA project homepage
2357 http://www.alsa-project.org
2359 ALSA Bug Tracking System
2360 https://bugtrack.alsa-project.org/bugs/
2363 mailto:alsa-devel@alsa-project.org
git.openpandora.org / pandora-kernel.git / blob