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 test for testing/debugging purpose, almost all controls can be
799 adjusted. Appearing only when compiled with
801 auto auto-config reading BIOS (default)
805 hp-3013 HP machines (3013-variant)
806 fujitsu Fujitsu S7020
808 will Will laptops (PB V7900)
809 replacer Replacer 672V
810 basic fixed pin assignment (old default model)
811 test for testing/debugging purpose, almost all controls can
812 adjusted. Appearing only when compiled with
814 auto auto-config reading BIOS (default)
817 fujitsu Fujitsu Laptop
818 hp-bpc HP xw4400/6400/8400/9400 laptops
819 hp-bpc-d7000 HP BPC D7000
820 hp-tc-t5735 HP Thin Client T5735
824 hippo Hippo (ATI) with jack detection, Sony UX-90s
825 hippo_1 Hippo (Benq) with jack detection
826 sony-assamd Sony ASSAMD
827 ultra Samsung Q1 Ultra Vista model
828 lenovo-3000 Lenovo 3000 y410
829 basic fixed pin assignment w/o SPDIF
830 auto auto-config reading BIOS (default)
836 dell Dell OEM laptops (Vostro 1200)
838 test for testing/debugging purpose, almost all controls can
839 adjusted. Appearing only when compiled with
841 auto auto-config reading BIOS (default)
847 3stack-dig 3-stack (2-channel) with SPDIF
848 3stack-6ch 3-stack (6-channel)
849 3stack-6ch-dig 3-stack (6-channel) with SPDIF
850 6stack-dig 6-stack with SPDIF
851 lenovo-101e Lenovo laptop
852 eeepc-p701 ASUS Eeepc P701
853 eeepc-ep20 ASUS Eeepc EP20
854 auto auto-config reading BIOS (default)
857 3stack-dig 3-jack with SPDIF I/O
858 6stack-dig 6-jack digital with SPDIF I/O
860 targa Targa T8, MSI-1049 T8
863 macpro MacPro support
864 mbp3 Macbook Pro rev3
865 imac24 iMac 24'' with jack detection
867 auto auto-config reading BIOS (default)
870 3stack-dig 3-jack with SPDIF I/O
871 6stack-dig 6-jack digital with SPDIF I/O
872 3stack-6ch 3-jack 6-channel
873 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
874 6stack-dig-demo 6-jack digital for Intel demo board
875 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
876 acer-aspire Acer Aspire 9810
877 medion Medion Laptops
878 medion-md2 Medion MD2
880 targa-2ch-dig Targs/MSI with 2-channel
881 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
882 lenovo-101e Lenovo 101E
883 lenovo-nb0763 Lenovo NB0763
884 lenovo-ms7195-dig Lenovo MS7195
886 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
887 6stack-dell Dell machines with 6stack (Inspiron 530)
889 clevo-m720r Clevo laptop M720R
890 fujitsu-pi2515 Fujitsu AMILO Pi2515
891 auto auto-config reading BIOS (default)
895 3stack-dig 3-jack with SPDIF I/O
896 6stack-dig 6-jack with SPDIF I/O
897 3stack-660 3-jack (for ALC660)
898 uniwill-m31 Uniwill M31 laptop
899 toshiba Toshiba laptop support
900 asus Asus laptop support
901 asus-laptop ASUS F2/F3 laptops
902 auto auto-config reading BIOS (default)
906 3stack-dig 3-jack with SPDIF OUT
907 6stack-dig 6-jack with SPDIF OUT
908 3stack-660 3-jack (for ALC660VD)
909 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
910 lenovo Lenovo 3000 C200
911 dallas Dallas laptops
913 auto auto-config reading BIOS (default)
916 minimal 3-jack in back
917 min_fp 3-jack in back, 2-jack in front
918 full 6-jack in back, 2-jack in front
919 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
920 allout 5-jack in back, 2-jack in front, SPDIF out
921 auto auto-config reading BIOS (default)
924 3stack 3-stack mode (default)
927 AD1884A / AD1883 / AD1984A / AD1984B
928 desktop 3-stack desktop (default)
929 laptop laptop with HP jack sensing
930 mobile mobile devices with HP jack sensing
931 thinkpad Lenovo Thinkpad X300
937 basic 3-jack (default)
939 thinkpad Lenovo Thinkpad T60/X60/Z60
946 basic default configuration
947 thinkpad Lenovo Thinkpad T61/X61
951 6stack 6-jack, separate surrounds (default)
952 3stack 3-stack, shared surrounds
953 laptop 2-channel only (FSC V2060, Samsung M50)
954 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
955 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
956 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
960 6stack-dig ditto with SPDIF
962 3stack-dig ditto with SPDIF
963 laptop 3-jack with hp-jack automute
964 laptop-dig ditto with SPDIF
965 auto auto-config reading BIOS (default)
968 laptop-hpsense Laptop with HP sense (old model laptop)
969 laptop-micsense Laptop with Mic sense (old model fujitsu)
970 laptop-hpmicsense Laptop with HP and Mic senses
972 test for testing/debugging purpose, almost all controls
973 can be adjusted. Appearing only when compiled with
977 laptop Basic Laptop config
978 laptop-hp Laptop config for some HP models (subdevice 30A5)
979 laptop-eapd Laptop config with EAPD support
980 test for testing/debugging purpose, almost all controls
981 can be adjusted. Appearing only when compiled with
985 laptop Basic Laptop config (default)
990 dell-d21 Dell (unknown)
991 dell-d22 Dell (unknown)
992 dell-d23 Dell (unknown)
993 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
994 dell-m22 Dell Latitude D620, Dell Latitude D820
995 dell-m23 Dell XPS M1710, Dell Precision M90
996 dell-m24 Dell Latitude 120L
997 dell-m25 Dell Inspiron E1505n
998 dell-m26 Dell Inspiron 1501
999 dell-m27 Dell Inspiron E1705/9400
1000 gateway Gateway laptops with EAPD control
1001 panasonic Panasonic CF-74
1005 dell-m42 Dell (unknown)
1006 dell-m43 Dell Precision
1007 dell-m44 Dell Inspiron
1012 5stack D945 5stack + SPDIF
1013 intel-mac-v1 Intel Mac Type 1
1014 intel-mac-v2 Intel Mac Type 2
1015 intel-mac-v3 Intel Mac Type 3
1016 intel-mac-v4 Intel Mac Type 4
1017 intel-mac-v5 Intel Mac Type 5
1018 macmini Intel Mac Mini (equivalent with type 3)
1019 macbook Intel Mac Book (eq. type 5)
1020 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1021 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1022 imac-intel Intel iMac (eq. type 2)
1023 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1024 dell-d81 Dell (unknown)
1025 dell-d82 Dell (unknown)
1026 dell-m81 Dell (unknown)
1027 dell-m82 Dell XPS M1210
1030 ref Reference board, base config
1031 m2-2 Some Gateway MX series laptops
1032 m6 Some Gateway NX series laptops
1033 pa6 Gateway NX860 series
1035 STAC9227/9228/9229/927x
1038 5stack D965 5stack + SPDIF
1039 dell-3stack Dell Dimension E520
1040 dell-bios Fixes with Dell BIOS setup
1044 dell-m4-1 Dell desktops
1045 dell-m4-2 Dell desktops
1049 dell-m6 Dell desktops
1052 vaio Setup for VAIO FE550G/SZ110
1053 vaio-ar Setup for VAIO AR
1055 The model name "genric" is treated as a special case. When this
1056 model is given, the driver uses the generic codec parser without
1057 "codec-patch". It's sometimes good for testing and debugging.
1059 If the default configuration doesn't work and one of the above
1060 matches with your device, report it together with the PCI
1061 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1062 ML (see the section "Links and Addresses").
1064 power_save and power_save_controller options are for power-saving
1065 mode. See powersave.txt for details.
1067 Note 2: If you get click noises on output, try the module option
1068 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1069 register value without FIFO size correction as the current
1070 DMA pointer. position_fix=2 will make the driver to use
1071 the position buffer instead of reading SD_LPIB register.
1072 (Usually SD_LPLIB register is more accurate than the
1075 NB: If you get many "azx_get_response timeout" messages at
1076 loading, it's likely a problem of interrupts (e.g. ACPI irq
1077 routing). Try to boot with options like "pci=noacpi". Also, you
1078 can try "single_cmd=1" module option. This will switch the
1079 communication method between HDA controller and codecs to the
1080 single immediate commands instead of CORB/RIRB. Basically, the
1081 single command mode is provided only for BIOS, and you won't get
1082 unsolicited events, too. But, at least, this works independently
1083 from the irq. Remember this is a last resort, and should be
1084 avoided as much as possible...
1086 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1087 On some hardwares, you may need to add a proper probe_mask option
1088 to avoid the "azx_get_response timeout" problem above, instead.
1089 This occurs when the access to non-existing or non-working codec slot
1090 (likely a modem one) causes a stall of the communication via HD-audio
1091 bus. You can see which codec slots are probed by enabling
1092 CONFIG_SND_DEBUG_DETECT, or simply from the file name of the codec
1093 proc files. Then limit the slots to probe by probe_mask option.
1094 For example, probe_mask=1 means to probe only the first slot, and
1095 probe_mask=4 means only the third slot.
1097 The power-management is supported.
1102 Module for RME Hammerfall DSP audio interface(s)
1104 This module supports multiple cards.
1106 Note: The firmware data can be automatically loaded via hotplug
1107 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1108 the firmware via hdsploader utility included in alsa-tools
1110 The firmware data is found in alsa-firmware package.
1112 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1113 module did formerly. It will allocate the buffers in advance
1114 when any HDSP cards are found. To make the buffer
1115 allocation sure, load snd-page-alloc module in the early
1116 stage of boot sequence. See "Early Buffer Allocation"
1122 Module for RME HDSP MADI board.
1124 precise_ptr - Enable precise pointer, or disable.
1125 line_outs_monitor - Send playback streams to analog outs by default.
1126 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1128 See hdspm.txt for details.
1133 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1135 This module supports autoprobe and multiple cards.
1137 Power management is _not_ supported.
1142 Module for Envy24 (ICE1712) based PCI sound cards.
1143 * MidiMan M Audio Delta 1010
1144 * MidiMan M Audio Delta 1010LT
1145 * MidiMan M Audio Delta DiO 2496
1146 * MidiMan M Audio Delta 66
1147 * MidiMan M Audio Delta 44
1148 * MidiMan M Audio Delta 410
1149 * MidiMan M Audio Audiophile 2496
1152 * TerraTec EWX 24/96
1153 * TerraTec DMX 6Fire
1155 * Hoontech SoundTrack DSP 24
1156 * Hoontech SoundTrack DSP 24 Value
1157 * Hoontech SoundTrack DSP 24 Media 7.1
1158 * Event Electronics, EZ8
1160 * Lionstracs, Mediastaton
1162 model - Use the given board model, one of the following:
1163 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1164 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1165 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1166 phase88, mediastation
1167 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1168 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1169 in msec resolution, default value is 500 (0.5 sec)
1171 This module supports multiple cards and autoprobe. Note: The consumer part
1172 is not used with all Envy24 based cards (for example in the MidiMan Delta
1175 Note: The supported board is detected by reading EEPROM or PCI
1176 SSID (if EEPROM isn't available). You can override the
1177 model by passing "model" module option in case that the
1178 driver isn't configured properly or you want to try another
1184 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1185 * MidiMan M Audio Revolution 5.1
1186 * MidiMan M Audio Revolution 7.1
1187 * MidiMan M Audio Audiophile 192
1189 * TerraTec Aureon 5.1 Sky
1190 * TerraTec Aureon 7.1 Space
1191 * TerraTec Aureon 7.1 Universe
1194 * AudioTrak Prodigy 7.1
1195 * AudioTrak Prodigy 7.1LT
1196 * AudioTrak Prodigy 192
1198 * Albatron K8X800 Pro II
1199 * Chaintech ZNF3-150
1200 * Chaintech ZNF3-250
1207 model - Use the given board model, one of the following:
1208 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1209 prodigy192, aureon51, aureon71, universe, ap192,
1210 k8x800, phase22, phase28, ms300, av710, se200pci,
1213 This module supports multiple cards and autoprobe.
1215 Note: The supported board is detected by reading EEPROM or PCI
1216 SSID (if EEPROM isn't available). You can override the
1217 model by passing "model" module option in case that the
1218 driver isn't configured properly or you want to try another
1224 Module for Echoaudio Indigo
1226 This module supports multiple cards.
1227 The driver requires the firmware loader support on kernel.
1232 Module for Echoaudio Indigo DJ
1234 This module supports multiple cards.
1235 The driver requires the firmware loader support on kernel.
1240 Module for Echoaudio Indigo IO
1242 This module supports multiple cards.
1243 The driver requires the firmware loader support on kernel.
1248 Module for AC'97 motherboards from Intel and compatibles.
1249 * Intel i810/810E, i815, i820, i830, i84x, MX440
1250 ICH5, ICH6, ICH7, ESB2
1251 * SiS 7012 (SiS 735)
1252 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1254 * AMD AMD768, AMD8111
1257 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1258 ac97_quirk - AC'97 workaround for strange hardware
1259 See "AC97 Quirk Option" section below.
1260 buggy_irq - Enable workaround for buggy interrupts on some
1261 motherboards (default yes on nForce chips,
1263 buggy_semaphore - Enable workaround for hardwares with buggy
1264 semaphores (e.g. on some ASUS laptops)
1266 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1267 from the controller chip
1268 (0 = off, 1 = on, -1 = default)
1270 This module supports one chip and autoprobe.
1272 Note: the latest driver supports auto-detection of chip clock.
1273 if you still encounter too fast playback, specify the clock
1274 explicitly via the module option "ac97_clock=41194".
1276 Joystick/MIDI ports are not supported by this driver. If your
1277 motherboard has these devices, use the ns558 or snd-mpu401
1278 modules, respectively.
1280 The power-management is supported.
1282 Module snd-intel8x0m
1283 --------------------
1285 Module for Intel ICH (i8x0) chipset MC97 modems.
1286 * Intel i810/810E, i815, i820, i830, i84x, MX440
1288 * SiS 7013 (SiS 735)
1289 * NVidia NForce, NForce2, NForce2s, NForce3
1293 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1295 This module supports one card and autoprobe.
1297 Note: The default index value of this module is -2, i.e. the first
1300 The power-management is supported.
1302 Module snd-interwave
1303 --------------------
1305 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1306 and other sound cards based on AMD InterWave (tm) chip.
1308 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1309 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1310 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1311 effect - 1 = InterWave effects enable (default 0);
1313 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1315 with isapnp=0, the following options are available:
1317 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1318 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1319 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1320 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1322 This module supports multiple cards, autoprobe and ISA PnP.
1324 Module snd-interwave-stb
1325 ------------------------
1327 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1328 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1329 circuit for extended control of bass, treble and master volume.
1331 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1332 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1333 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1334 effect - 1 = InterWave effects enable (default 0);
1336 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1338 with isapnp=0, the following options are available:
1340 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1341 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1342 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1343 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1344 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1346 This module supports multiple cards, autoprobe and ISA PnP.
1351 Module for Korg 1212 IO PCI card
1353 This module supports multiple cards.
1358 Module for Echoaudio Layla20
1360 This module supports multiple cards.
1361 The driver requires the firmware loader support on kernel.
1366 Module for Echoaudio Layla24
1368 This module supports multiple cards.
1369 The driver requires the firmware loader support on kernel.
1374 Module for Allegro/Maestro3 chips
1376 external_amp - enable external amp (enabled by default)
1377 amp_gpio - GPIO pin number for external amp (0-15) or
1378 -1 for default pin (8 for allegro, 1 for
1381 This module supports autoprobe and multiple chips.
1383 Note: the binding of amplifier is dependent on hardware.
1384 If there is no sound even though all channels are unmuted, try to
1385 specify other gpio connection via amp_gpio option.
1386 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1389 The power-management is supported.
1394 Module for Echoaudio Mia
1396 This module supports multiple cards.
1397 The driver requires the firmware loader support on kernel.
1402 Module for Miro soundcards: miroSOUND PCM 1 pro,
1404 miroSOUND PCM 20 Radio.
1406 port - Port # (0x530,0x604,0xe80,0xf40)
1407 irq - IRQ # (5,7,9,10,11)
1408 dma1 - 1st dma # (0,1,3)
1409 dma2 - 2nd dma # (0,1)
1410 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1411 mpu_irq - MPU-401 irq # (5,7,9,10)
1412 fm_port - FM Port # (0x388)
1413 wss - enable WSS mode
1414 ide - enable onboard ide support
1419 Module for Digigram miXart8 sound cards.
1421 This module supports multiple cards.
1422 Note: One miXart8 board will be represented as 4 alsa cards.
1423 See MIXART.txt for details.
1425 When the driver is compiled as a module and the hotplug firmware
1426 is supported, the firmware data is loaded via hotplug automatically.
1427 Install the necessary firmware files in alsa-firmware package.
1428 When no hotplug fw loader is available, you need to load the
1429 firmware via mixartloader utility in alsa-tools package.
1434 Module for Echoaudio Mona
1436 This module supports multiple cards.
1437 The driver requires the firmware loader support on kernel.
1442 Module for MPU-401 UART devices.
1444 port - port number or -1 (disable)
1445 irq - IRQ number or -1 (disable)
1446 pnp - PnP detection - 0 = disable, 1 = enable (default)
1448 This module supports multiple devices and PnP.
1453 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1456 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1457 irq - IRQ # for MTPAV (7,5, default=7)
1458 hwports - number of supported hardware ports, default=8.
1460 Module supports only 1 card. This module has no enable option.
1465 Module for Ego Systems (ESI) Miditerminal 4140
1467 This module supports multiple devices.
1468 Requires parport (CONFIG_PARPORT).
1473 Module for NeoMagic NM256AV/ZX chips
1475 playback_bufsize - max playback frame size in kB (4-128kB)
1476 capture_bufsize - max capture frame size in kB (4-128kB)
1477 force_ac97 - 0 or 1 (disabled by default)
1478 buffer_top - specify buffer top address
1479 use_cache - 0 or 1 (disabled by default)
1480 vaio_hack - alias buffer_top=0x25a800
1481 reset_workaround - enable AC97 RESET workaround for some laptops
1482 reset_workaround2 - enable extended AC97 RESET workaround for some
1485 This module supports one chip and autoprobe.
1487 The power-management is supported.
1489 Note: on some notebooks the buffer address cannot be detected
1490 automatically, or causes hang-up during initialization.
1491 In such a case, specify the buffer top address explicitly via
1492 the buffer_top option.
1494 Sony F250: buffer_top=0x25a800
1495 Sony F270: buffer_top=0x272800
1496 The driver supports only ac97 codec. It's possible to force
1497 to initialize/use ac97 although it's not detected. In such a
1498 case, use force_ac97=1 option - but *NO* guarantee whether it
1501 Note: The NM256 chip can be linked internally with non-AC97
1502 codecs. This driver supports only the AC97 codec, and won't work
1503 with machines with other (most likely CS423x or OPL3SAx) chips,
1504 even though the device is detected in lspci. In such a case, try
1505 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1506 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1507 and proper hardware parameters in the case without ISA PnP.
1509 Note: some laptops need a workaround for AC97 RESET. For the
1510 known hardware like Dell Latitude LS and Sony PCG-F305, this
1511 workaround is enabled automatically. For other laptops with a
1512 hard freeze, you can try reset_workaround=1 option.
1514 Note: Dell Latitude CSx laptops have another problem regarding
1515 AC97 RESET. On these laptops, reset_workaround2 option is
1516 turned on as default. This option is worth to try if the
1517 previous reset_workaround option doesn't help.
1519 Note: This driver is really crappy. It's a porting from the
1520 OSS driver, which is a result of black-magic reverse engineering.
1521 The detection of codec will fail if the driver is loaded *after*
1522 X-server as described above. You might be able to force to load
1523 the module, but it may result in hang-up. Hence, make sure that
1524 you load this module *before* X if you encounter this kind of
1530 Module for Yamaha OPL3-SA2/SA3 sound cards.
1532 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1534 with isapnp=0, the following options are available:
1536 port - control port # for OPL3-SA chip (0x370)
1537 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1538 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1539 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1540 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1541 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1542 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1543 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1545 This module supports multiple cards and ISA PnP. It does not support
1546 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1548 The power-management is supported.
1550 Module snd-opti92x-ad1848
1551 -------------------------
1553 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1554 Module works with OAK Mozart cards as well.
1556 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1558 with isapnp=0, the following options are available:
1560 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1561 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1562 fm_port - port # for OPL3 device (0x388)
1563 irq - IRQ # for WSS chip (5,7,9,10,11)
1564 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1565 dma1 - first DMA # for WSS chip (0,1,3)
1567 This module supports only one card, autoprobe and PnP.
1569 Module snd-opti92x-cs4231
1570 -------------------------
1572 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1574 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1576 with isapnp=0, the following options are available:
1578 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1579 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1580 fm_port - port # for OPL3 device (0x388)
1581 irq - IRQ # for WSS chip (5,7,9,10,11)
1582 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1583 dma1 - first DMA # for WSS chip (0,1,3)
1584 dma2 - second DMA # for WSS chip (0,1,3)
1586 This module supports only one card, autoprobe and PnP.
1591 Module for sound cards based on OPTi 82c93x chips.
1593 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1595 with isapnp=0, the following options are available:
1597 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1598 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1599 fm_port - port # for OPL3 device (0x388)
1600 irq - IRQ # for WSS chip (5,7,9,10,11)
1601 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1602 dma1 - first DMA # for WSS chip (0,1,3)
1603 dma2 - second DMA # for WSS chip (0,1,3)
1605 This module supports only one card, autoprobe and PnP.
1610 Module for sound cards based on the C-Media CMI8788 chip:
1612 * AuzenTech X-Meridian
1614 * Club3D Theatron DTS
1616 * Razer Barracuda AC-1
1619 This module supports autoprobe and multiple cards.
1621 Power management is _not_ supported.
1626 Module for internal PC-Speaker.
1628 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1630 This module supports system beeps, some kind of PCM playback and
1631 even a few mixer controls.
1636 Module for Digigram PCXHR boards
1638 This module supports multiple cards.
1640 Module snd-portman2x4
1641 ---------------------
1643 Module for Midiman Portman 2x4 parallel port MIDI interface
1645 This module supports multiple cards.
1647 Module snd-powermac (on ppc only)
1648 ---------------------------------
1650 Module for PowerMac, iMac and iBook on-board soundchips
1652 enable_beep - enable beep using PCM (enabled as default)
1654 Module supports autoprobe a chip.
1656 Note: the driver may have problems regarding endianess.
1658 The power-management is supported.
1660 Module snd-pxa2xx-ac97 (on arm only)
1661 ------------------------------------
1663 Module for AC97 driver for the Intel PXA2xx chip
1665 For ARM architecture only.
1667 The power-management is supported.
1672 Module for Conexant Riptide chip
1674 joystick_port - Joystick port # (default: 0x200)
1675 mpu_port - MPU401 port # (default: 0x330)
1676 opl3_port - OPL3 port # (default: 0x388)
1678 This module supports multiple cards.
1679 The driver requires the firmware loader support on kernel.
1680 You need to install the firmware file "riptide.hex" to the standard
1681 firmware path (e.g. /lib/firmware).
1686 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1687 Prodif96 and Prodif Gold) sound cards.
1689 This module supports multiple cards.
1694 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1696 This module supports multiple cards.
1701 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1703 precise_ptr - Enable precise pointer (doesn't work reliably).
1706 This module supports multiple cards.
1708 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1709 module did formerly. It will allocate the buffers in advance
1710 when any RME9652 cards are found. To make the buffer
1711 allocation sure, load snd-page-alloc module in the early
1712 stage of boot sequence. See "Early Buffer Allocation"
1715 Module snd-sa11xx-uda1341 (on arm only)
1716 ---------------------------------------
1718 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1720 Module supports only one card.
1721 Module has no enable and index options.
1723 The power-management is supported.
1728 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1732 port - port # for SB DSP chip (0x220,0x240,0x260)
1733 irq - IRQ # for SB DSP chip (5,7,9,10)
1734 dma8 - DMA # for SB DSP chip (1,3)
1736 This module supports multiple cards and autoprobe.
1738 The power-management is supported.
1740 Module snd-sb16 and snd-sbawe
1741 -----------------------------
1743 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1744 SoundBlaster AWE 32 (PnP),
1745 SoundBlaster AWE 64 PnP
1747 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1748 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1749 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1751 with isapnp=0, the following options are available:
1753 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1754 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1755 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1756 (snd-sbawe module only)
1757 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1758 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1759 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1761 This module supports multiple cards, autoprobe and ISA PnP.
1763 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1764 disable 16bit DMA with dma16 = -1 module parameter.
1765 Also, all Sound Blaster 16 type cards can operate in 16-bit
1766 half duplex mode through 8-bit DMA channel by disabling their
1769 The power-management is supported.
1774 Module for Gallant SC-6000 soundcard.
1776 port - Port # (0x220 or 0x240)
1777 mss_port - MSS Port # (0x530 or 0xe80)
1778 irq - IRQ # (5,7,9,10,11)
1779 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1782 This module supports multiple cards.
1784 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1789 Module for Aztech Sound Galaxy sound card.
1791 sbport - Port # for SB16 interface (0x220,0x240)
1792 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1793 irq - IRQ # (7,9,10,11)
1796 This module supports multiple cards.
1798 The power-management is supported.
1803 Module for ENSONIQ SoundScape PnP cards.
1805 port - Port # (PnP setup)
1806 wss_port - WSS Port # (PnP setup)
1807 irq - IRQ # (PnP setup)
1808 mpu_irq - MPU-401 IRQ # (PnP setup)
1809 dma - DMA # (PnP setup)
1810 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1812 This module supports multiple cards. ISA PnP must be enabled.
1813 You need sscape_ctl tool in alsa-tools package for loading
1816 Module snd-sun-amd7930 (on sparc only)
1817 --------------------------------------
1819 Module for AMD7930 sound chips found on Sparcs.
1821 This module supports multiple cards.
1823 Module snd-sun-cs4231 (on sparc only)
1824 -------------------------------------
1826 Module for CS4231 sound chips found on Sparcs.
1828 This module supports multiple cards.
1830 Module snd-sun-dbri (on sparc only)
1831 -----------------------------------
1833 Module for DBRI sound chips found on Sparcs.
1835 This module supports multiple cards.
1837 Module snd-wavefront
1838 --------------------
1840 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1842 use_cs4232_midi - Use CS4232 MPU-401 interface
1843 (inaccessibly located inside your computer)
1844 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1846 with isapnp=0, the following options are available:
1848 cs4232_pcm_port - Port # for CS4232 PCM interface.
1849 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1850 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1851 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1852 ics2115_port - Port # for ICS2115
1853 ics2115_irq - IRQ # for ICS2115
1854 fm_port - FM OPL-3 Port #
1855 dma1 - DMA1 # for CS4232 PCM interface.
1856 dma2 - DMA2 # for CS4232 PCM interface.
1858 The below are options for wavefront_synth features:
1859 wf_raw - Assume that we need to boot the OS (default:no)
1860 If yes, then during driver loading, the state of the board is
1861 ignored, and we reset the board and load the firmware anyway.
1862 fx_raw - Assume that the FX process needs help (default:yes)
1863 If false, we'll leave the FX processor in whatever state it is
1864 when the driver is loaded. The default is to download the
1865 microprogram and associated coefficients to set it up for
1866 "default" operation, whatever that means.
1867 debug_default - Debug parameters for card initialization
1868 wait_usecs - How long to wait without sleeping, usecs
1870 This magic number seems to give pretty optimal throughput
1871 based on my limited experimentation.
1872 If you want to play around with it and find a better value, be
1873 my guest. Remember, the idea is to get a number that causes us
1874 to just busy wait for as many WaveFront commands as possible,
1875 without coming up with a number so large that we hog the whole
1877 Specifically, with this number, out of about 134,000 status
1878 waits, only about 250 result in a sleep.
1879 sleep_interval - How long to sleep when waiting for reply
1881 sleep_tries - How many times to try sleeping during a wait
1883 ospath - Pathname to processed ICS2115 OS firmware
1884 (default:wavefront.os)
1885 The path name of the ISC2115 OS firmware. In the recent
1886 version, it's handled via firmware loader framework, so it
1887 must be installed in the proper path, typically,
1889 reset_time - How long to wait for a reset to take effect
1891 ramcheck_time - How many seconds to wait for the RAM test
1893 osrun_time - How many seconds to wait for the ICS2115 OS
1896 This module supports multiple cards and ISA PnP.
1898 Note: the firmware file "wavefront.os" was located in the earlier
1899 version in /etc. Now it's loaded via firmware loader, and
1900 must be in the proper firmware path, such as /lib/firmware.
1901 Copy (or symlink) the file appropriately if you get an error
1902 regarding firmware downloading after upgrading the kernel.
1904 Module snd-sonicvibes
1905 ---------------------
1907 Module for S3 SonicVibes PCI sound cards.
1908 * PINE Schubert 32 PCI
1910 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1911 - SoundCard must have onboard SRAM for this.
1912 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1914 This module supports multiple cards and autoprobe.
1916 Module snd-serial-u16550
1917 ------------------------
1919 Module for UART16550A serial MIDI ports.
1921 port - port # for UART16550A chip
1922 irq - IRQ # for UART16550A chip, -1 = poll mode
1923 speed - speed in bauds (9600,19200,38400,57600,115200)
1925 base - base for divisor in bauds (57600,115200,230400,460800)
1927 outs - number of MIDI ports in a serial port (1-4)
1929 adaptor - Type of adaptor.
1930 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1931 3 = MS-124W M/B, 4 = Generic
1933 This module supports multiple cards. This module does not support autoprobe
1934 thus the main port must be specified!!! Other options are optional.
1939 Module for Trident 4DWave DX/NX sound cards.
1940 * Best Union Miss Melody 4DWave PCI
1942 * Warpspeed ONSpeed 4DWave PCI
1945 * CHIC True Sound 4Dwave
1946 * Shark Predator4D-PCI
1947 * Jaton SonicWave 4D
1949 pcm_channels - max channels (voices) reserved for PCM
1950 wavetable_size - max wavetable size in kB (4-?kb)
1952 This module supports multiple cards and autoprobe.
1954 The power-management is supported.
1956 Module snd-usb-audio
1957 --------------------
1959 Module for USB audio and USB MIDI devices.
1961 vid - Vendor ID for the device (optional)
1962 pid - Product ID for the device (optional)
1963 device_setup - Device specific magic number (optional)
1964 - Influence depends on the device
1967 This module supports multiple devices, autoprobe and hotplugging.
1969 Module snd-usb-caiaq
1970 --------------------
1972 Module for caiaq UB audio interfaces,
1973 * Native Instruments RigKontrol2
1974 * Native Instruments Kore Controller
1975 * Native Instruments Audio Kontrol 1
1976 * Native Instruments Audio 8 DJ
1978 This module supports multiple devices, autoprobe and hotplugging.
1980 Module snd-usb-usx2y
1981 --------------------
1983 Module for Tascam USB US-122, US-224 and US-428 devices.
1985 This module supports multiple devices, autoprobe and hotplugging.
1987 Note: you need to load the firmware via usx2yloader utility included
1988 in alsa-tools and alsa-firmware packages.
1993 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1994 8233A, 8233C, 8235, 8237 (south) bridge.
1996 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1998 joystick - Enable joystick (default off) [VIA686A/686B only]
1999 ac97_clock - AC'97 codec clock base (default 48000Hz)
2000 dxs_support - support DXS channels,
2001 0 = auto (default), 1 = enable, 2 = disable,
2002 3 = 48k only, 4 = no VRA, 5 = enable any sample
2003 rate and different sample rates on different
2005 [VIA8233/C, 8235, 8237 only]
2006 ac97_quirk - AC'97 workaround for strange hardware
2007 See "AC97 Quirk Option" section below.
2009 This module supports one chip and autoprobe.
2011 Note: on some SMP motherboards like MSI 694D the interrupts might
2012 not be generated properly. In such a case, please try to
2013 set the SMP (or MPS) version on BIOS to 1.1 instead of
2014 default value 1.4. Then the interrupt number will be
2015 assigned under 15. You might also upgrade your BIOS.
2017 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2018 channels as the first PCM. On these channels, up to 4
2019 streams can be played at the same time, and the controller
2020 can perform sample rate conversion with separate rates for
2022 As default (dxs_support = 0), 48k fixed rate is chosen
2023 except for the known devices since the output is often
2024 noisy except for 48k on some mother boards due to the
2026 Please try once dxs_support=5 and if it works on other
2027 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2028 know the PCI subsystem vendor/device id's (output of
2030 If dxs_support=5 does not work, try dxs_support=4; if it
2031 doesn't work too, try dxs_support=1. (dxs_support=1 is
2032 usually for old motherboards. The correct implemented
2033 board should work with 4 or 5.) If it still doesn't
2034 work and the default setting is ok, dxs_support=3 is the
2035 right choice. If the default setting doesn't work at all,
2036 try dxs_support=2 to disable the DXS channels.
2037 In any cases, please let us know the result and the
2038 subsystem vendor/device ids. See "Links and Addresses"
2041 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2042 additionally. The mpu_port option is for VIA686 chips only.
2044 The power-management is supported.
2046 Module snd-via82xx-modem
2047 ------------------------
2049 Module for VIA82xx AC97 modem
2051 ac97_clock - AC'97 codec clock base (default 48000Hz)
2053 This module supports one card and autoprobe.
2055 Note: The default index value of this module is -2, i.e. the first
2058 The power-management is supported.
2063 Module for virtual rawmidi devices.
2064 This module creates virtual rawmidi devices which communicate
2065 to the corresponding ALSA sequencer ports.
2067 midi_devs - MIDI devices # (1-4, default=4)
2069 This module supports multiple cards.
2074 Module for sound cards based on the Asus AV200 chip, i.e.,
2075 Xonar D2 and Xonar D2X.
2077 This module supports autoprobe and multiple cards.
2079 Power management is _not_ supported.
2084 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2086 mic - Enable Microphone on V222 Mic (NYI)
2087 ibl - Capture IBL size. (default = 0, minimum size)
2089 This module supports multiple cards.
2091 When the driver is compiled as a module and the hotplug firmware
2092 is supported, the firmware data is loaded via hotplug automatically.
2093 Install the necessary firmware files in alsa-firmware package.
2094 When no hotplug fw loader is available, you need to load the
2095 firmware via vxloader utility in alsa-tools package. To invoke
2096 vxloader automatically, add the following to /etc/modprobe.conf
2098 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2100 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2101 /etc/modules.conf, instead.)
2102 IBL size defines the interrupts period for PCM. The smaller size
2103 gives smaller latency but leads to more CPU consumption, too.
2104 The size is usually aligned to 126. As default (=0), the smallest
2105 size is chosen. The possible IBL values can be found in
2106 /proc/asound/cardX/vx-status proc file.
2108 The power-management is supported.
2113 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2115 ibl - Capture IBL size. (default = 0, minimum size)
2117 This module supports multiple cards. The module is compiled only when
2118 PCMCIA is supported on kernel.
2120 With the older 2.6.x kernel, to activate the driver via the card
2121 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2122 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2123 longer require a config file.
2125 When the driver is compiled as a module and the hotplug firmware
2126 is supported, the firmware data is loaded via hotplug automatically.
2127 Install the necessary firmware files in alsa-firmware package.
2128 When no hotplug fw loader is available, you need to load the
2129 firmware via vxloader utility in alsa-tools package.
2131 About capture IBL, see the description of snd-vx222 module.
2133 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2136 The power-management is supported.
2141 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2143 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2144 1 (auto-detect for YMF744/754 only)
2145 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2146 1 (auto-detect for YMF744/754 only)
2147 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2149 rear_switch - enable shared rear/line-in switch (bool)
2151 This module supports autoprobe and multiple chips.
2153 The power-management is supported.
2155 Module snd-pdaudiocf
2156 --------------------
2158 Module for Sound Core PDAudioCF sound card.
2160 The power-management is supported.
2166 The ac97_quirk option is used to enable/override the workaround for
2167 specific devices on drivers for on-board AC'97 controllers like
2168 snd-intel8x0. Some hardware have swapped output pins between Master
2169 and Headphone, or Surround (thanks to confusion of AC'97
2170 specifications from version to version :-)
2172 The driver provides the auto-detection of known problematic devices,
2173 but some might be unknown or wrongly detected. In such a case, pass
2174 the proper value with this option.
2176 The following strings are accepted:
2177 - default Don't override the default setting
2178 - none Disable the quirk
2179 - hp_only Bind Master and Headphone controls as a single control
2180 - swap_hp Swap headphone and master controls
2181 - swap_surround Swap master and surround controls
2182 - ad_sharing For AD1985, turn on OMS bit and use headphone
2183 - alc_jack For ALC65x, turn on the jack sense mode
2184 - inv_eapd Inverted EAPD implementation
2185 - mute_led Bind EAPD bit for turning on/off mute LED
2187 For backward compatibility, the corresponding integer value -1, 0,
2188 ... are accepted, too.
2190 For example, if "Master" volume control has no effect on your device
2191 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2194 Configuring Non-ISAPNP Cards
2195 ============================
2197 When the kernel is configured with ISA-PnP support, the modules
2198 supporting the isapnp cards will have module options "isapnp".
2199 If this option is set, *only* the ISA-PnP devices will be probed.
2200 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2201 together with the proper i/o and irq configuration.
2203 When the kernel is configured without ISA-PnP support, isapnp option
2204 will be not built in.
2207 Module Autoloading Support
2208 ==========================
2210 The ALSA drivers can be loaded automatically on demand by defining
2211 module aliases. The string 'snd-card-%1' is requested for ALSA native
2212 devices where %i is sound card number from zero to seven.
2214 To auto-load an ALSA driver for OSS services, define the string
2215 'sound-slot-%i' where %i means the slot number for OSS, which
2216 corresponds to the card index of ALSA. Usually, define this
2217 as the same card module.
2219 An example configuration for a single emu10k1 card is like below:
2220 ----- /etc/modprobe.conf
2221 alias snd-card-0 snd-emu10k1
2222 alias sound-slot-0 snd-emu10k1
2223 ----- /etc/modprobe.conf
2225 The available number of auto-loaded sound cards depends on the module
2226 option "cards_limit" of snd module. As default it's set to 1.
2227 To enable the auto-loading of multiple cards, specify the number of
2228 sound cards in that option.
2230 When multiple cards are available, it'd better to specify the index
2231 number for each card via module option, too, so that the order of
2232 cards is kept consistent.
2234 An example configuration for two sound cards is like below:
2236 ----- /etc/modprobe.conf
2238 options snd cards_limit=2
2239 alias snd-card-0 snd-interwave
2240 alias snd-card-1 snd-ens1371
2241 options snd-interwave index=0
2242 options snd-ens1371 index=1
2244 alias sound-slot-0 snd-interwave
2245 alias sound-slot-1 snd-ens1371
2246 ----- /etc/modprobe.conf
2248 In this example, the interwave card is always loaded as the first card
2249 (index 0) and ens1371 as the second (index 1).
2251 Alternative (and new) way to fixate the slot assignment is to use
2252 "slots" option of snd module. In the case above, specify like the
2255 options snd slots=snd-interwave,snd-ens1371
2257 Then, the first slot (#0) is reserved for snd-interwave driver, and
2258 the second (#1) for snd-ens1371. You can omit index option in each
2259 driver if slots option is used (although you can still have them at
2260 the same time as long as they don't conflict).
2262 The slots option is especially useful for avoiding the possible
2263 hot-plugging and the resultant slot conflict. For example, in the
2264 case above again, the first two slots are already reserved. If any
2265 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2266 snd-ens1371, it will be assigned to the third or later slot.
2269 ALSA PCM devices to OSS devices mapping
2270 =======================================
2272 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2273 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2274 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2275 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2276 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2277 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2278 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2279 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2280 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2282 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2283 sound card number and second means device number. The ALSA devices
2284 have either 'c' or 'p' suffix indicating the direction, capture and
2285 playback, respectively.
2287 Please note that the device mapping above may be varied via the module
2288 options of snd-pcm-oss module.
2291 Proc interfaces (/proc/asound)
2292 ==============================
2294 /proc/asound/card#/pcm#[cp]/oss
2295 -------------------------------
2296 String "erase" - erase all additional informations about OSS applications
2297 String "<app_name> <fragments> <fragment_size> [<options>]"
2299 <app_name> - name of application with (higher priority) or without path
2300 <fragments> - number of fragments or zero if auto
2301 <fragment_size> - size of fragment in bytes or zero if auto
2302 <options> - optional parameters
2303 - disable the application tries to open a pcm device for
2304 this channel but does not want to use it.
2305 (Cause a bug or mmap needs)
2306 It's good for Quake etc...
2307 - direct don't use plugins
2308 - block force block mode (rvplayer)
2309 - non-block force non-block mode
2310 - whole-frag write only whole fragments (optimization affecting
2312 - no-silence do not fill silence ahead to avoid clicks
2313 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2314 instead of filled blocks
2316 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2317 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2318 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2321 Early Buffer Allocation
2322 =======================
2324 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2325 sometimes it's too late to find such spaces when the driver module is
2326 actually loaded due to memory fragmentation. You can pre-allocate the
2327 PCM buffers by loading snd-page-alloc module and write commands to its
2328 proc file in prior, for example, in the early boot stage like
2329 /etc/init.d/*.local scripts.
2331 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2332 usage of page allocation. In writing, you can send the following
2333 commands to the snd-page-alloc driver:
2335 - add VENDOR DEVICE MASK SIZE BUFFERS
2337 VENDOR and DEVICE are PCI vendor and device IDs. They take
2338 integer numbers (0x prefix is needed for the hex).
2339 MASK is the PCI DMA mask. Pass 0 if not restricted.
2340 SIZE is the size of each buffer to allocate. You can pass
2341 k and m suffix for KB and MB. The max number is 16MB.
2342 BUFFERS is the number of buffers to allocate. It must be greater
2343 than 0. The max number is 4.
2347 This will erase the all pre-allocated buffers which are not in
2354 ALSA project homepage
2355 http://www.alsa-project.org
2357 ALSA Bug Tracking System
2358 https://bugtrack.alsa-project.org/bugs/
2361 mailto:alsa-devel@alsa-project.org
projects / linux-beck.git / blob