2 Advanced Linux Sound Architecture - Driver
3 ==========================================
10 To enable ALSA support you need at least to build the kernel with
11 primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,
12 you don't have to choose any of the OSS modules.
14 Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
15 PCM supports if you want to run OSS applications with ALSA.
17 If you want to support the WaveTable functionality on cards such as
18 SB Live! then you need to enable "Sequencer support"
19 (CONFIG_SND_SEQUENCER).
21 To make ALSA debug messages more verbose, enable the "Verbose printk"
22 and "Debug" options. To check for memory leaks, turn on "Debug memory"
23 too. "Debug detection" will add checks for the detection of cards.
25 Please note that all the ALSA ISA drivers support the Linux isapnp API
26 (if the card supports ISA PnP). You don't need to configure the cards
33 This depends on your distribution, but normally you use the /dev/MAKEDEV
34 script to create the necessary device nodes. On some systems you use a
35 script named 'snddevices'.
41 The user can load modules with options. If the module supports more than
42 one card and you have more than one card of the same type then you can
43 specify multiple values for the option separated by commas.
45 Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
50 The core ALSA module. It is used by all ALSA card drivers.
51 It takes the following options which have global effects.
53 major - major number for sound driver
56 - limiting card index for auto-loading (1-8)
58 - For auto-loading more than one card, specify this
59 option together with snd-card-X aliases.
60 slots - Reserve the slot index for the given driver.
61 This option takes multiple strings.
62 See "Module Autoloading Support" section for details.
67 The PCM OSS emulation module.
68 This module takes options which change the mapping of devices.
70 dsp_map - PCM device number maps assigned to the 1st OSS device.
72 adsp_map - PCM device number maps assigned to the 2st OSS device.
75 - Don't block opening busy PCM devices. Default: 1
77 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
78 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
79 to PCM #0 of the card #0.
80 For changing the second or later card, specify the option with
81 commas, such like "dsp_map=0,1".
83 nonblock_open option is used to change the behavior of the PCM
84 regarding opening the device. When this option is non-zero,
85 opening a busy OSS PCM device won't be blocked but return
86 immediately with EAGAIN (just like O_NONBLOCK flag).
91 This module takes options which change the mapping of devices.
92 similar to those of the snd-pcm-oss module.
94 midi_map - MIDI device number maps assigned to the 1st OSS device.
96 amidi_map - MIDI device number maps assigned to the 2st OSS device.
99 Common parameters for top sound card modules
100 --------------------------------------------
102 Each of top level sound card module takes the following options.
104 index - index (slot #) of sound card
105 - Values: 0 through 31 or negative
106 - If nonnegative, assign that index number
107 - if negative, interpret as a bitmask of permissible
108 indices; the first free permitted index is assigned
110 id - card ID (identifier or name)
111 - Can be up to 15 characters long
112 - Default: the card type
113 - A directory by this name is created under /proc/asound/
114 containing information about the card
115 - This ID can be used instead of the index number in
118 - Default: enabled, for PCI and ISA PnP cards
123 Module for AdLib FM cards.
125 port - port # for OPL chip
127 This module supports multiple cards. It does not support autoprobe, so
128 the port must be specified. For actual AdLib FM cards it will be 0x388.
129 Note that this card does not have PCM support and no mixer; only FM
132 Make sure you have "sbiload" from the alsa-tools package available and,
133 after loading the module, find out the assigned ALSA sequencer port
134 number through "sbiload -l". Example output:
136 Port Client name Port name
137 64:0 OPL2 FM synth OPL2 FM Port
139 Load the std.sb and drums.sb patches also supplied by sbiload:
141 sbiload -p 64:0 std.sb drums.sb
143 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
144 instead. To have the card produce sound, use aplaymidi from alsa-utils:
146 aplaymidi -p 64:0 foo.mid
151 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
153 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
155 This module supports multiple cards, autoprobe and PnP.
160 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
162 port - port # for AD1848 chip
163 irq - IRQ # for AD1848 chip
164 dma1 - DMA # for AD1848 chip (0,1,3)
166 This module supports multiple cards. It does not support autoprobe
167 thus main port must be specified!!! Other ports are optional.
169 The power-management is supported.
174 Module for Analog Devices AD1889 chips.
176 ac97_quirk - AC'97 workaround for strange hardware
177 See the description of intel8x0 module for details.
179 This module supports multiple cards.
184 Module for ALi M5451 PCI chip.
186 pcm_channels - Number of hardware channels assigned for PCM
187 spdif - Support SPDIF I/O
190 This module supports one chip and autoprobe.
192 The power-management is supported.
197 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
199 This module supports multiple cards, autoprobe and PnP.
201 The power-management is supported.
206 Module for Avance Logic ALS300 and ALS300+
208 This module supports multiple cards.
210 The power-management is supported.
215 Module for sound cards based on Avance Logic ALS4000 PCI chip.
217 joystick_port - port # for legacy joystick support.
218 0 = disabled (default), 1 = auto-detect
220 This module supports multiple cards, autoprobe and PnP.
222 The power-management is supported.
227 Module for ATI IXP 150/200/250/400 AC97 controllers.
229 ac97_clock - AC'97 clock (default = 48000)
230 ac97_quirk - AC'97 workaround for strange hardware
231 See "AC97 Quirk Option" section below.
232 ac97_codec - Workaround to specify which AC'97 codec
233 instead of probing. If this works for you
234 file a bug with your `lspci -vn` output.
236 -1 -- Default behavior.
237 0-2 -- Use the specified codec.
238 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
240 This module supports one card and autoprobe.
242 ATI IXP has two different methods to control SPDIF output. One is
243 over AC-link and another is over the "direct" SPDIF output. The
244 implementation depends on the motherboard, and you'll need to
245 choose the correct one via spdif_aclink module option.
247 The power-management is supported.
249 Module snd-atiixp-modem
250 -----------------------
252 Module for ATI IXP 150/200/250 AC97 modem controllers.
254 This module supports one card and autoprobe.
256 Note: The default index value of this module is -2, i.e. the first
259 The power-management is supported.
261 Module snd-au8810, snd-au8820, snd-au8830
262 -----------------------------------------
264 Module for Aureal Vortex, Vortex2 and Advantage device.
266 pcifix - Control PCI workarounds
267 0 = Disable all workarounds
268 1 = Force the PCI latency of the Aureal card to 0xff
269 2 = Force the Extend PCI#2 Internal Master for Efficient
270 Handling of Dummy Requests on the VIA KT133 AGP Bridge
271 3 = Force both settings
272 255 = Autodetect what is required (default)
274 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
275 EQ, mpu401, gameport. A3D and wavetable support are still in development.
276 Development and reverse engineering work is being coordinated at
277 http://savannah.nongnu.org/projects/openvortex/
278 SPDIF output has a copy of the AC97 codec output, unless you use the
279 "spdif" pcm device, which allows raw data passthru.
280 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
283 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
284 control correctly. If you have problems regarding this, try
285 another ALSA compliant mixer (alsamixer works).
290 Module for Audiowerk2 sound card
292 This module supports multiple cards.
297 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
299 This module supports multiple cards, PnP and autoprobe.
301 The power-management is supported.
306 Module for sound cards based on Aztech AZF3328 PCI chip.
308 joystick - Enable joystick (default off)
310 This module supports multiple cards.
315 Module for video cards based on Bt87x chips.
317 digital_rate - Override the default digital rate (Hz)
318 load_all - Load the driver even if the card model isn't known
320 This module supports multiple cards.
322 Note: The default index value of this module is -2, i.e. the first
328 Module for Creative Audigy LS and SB Live 24bit
330 This module supports multiple cards.
336 Module for sound cards based on C-Media CMI8330 ISA chips.
338 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
340 with isapnp=0, the following options are available:
342 wssport - port # for CMI8330 chip (WSS)
343 wssirq - IRQ # for CMI8330 chip (WSS)
344 wssdma - first DMA # for CMI8330 chip (WSS)
345 sbport - port # for CMI8330 chip (SB16)
346 sbirq - IRQ # for CMI8330 chip (SB16)
347 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
348 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
350 This module supports multiple cards and autoprobe.
352 The power-management is supported.
357 Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
359 mpu_port - port address of MIDI interface (8338 only):
360 0x300,0x310,0x320,0x330 = legacy port,
361 0 = disable (default)
362 fm_port - port address of OPL-3 FM synthesizer (8x38 only):
364 1 = integrated PCI port (default on 8738),
366 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
368 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
370 This module supports autoprobe and multiple cards.
372 The power-management is supported.
377 Module for sound cards based on CS4231 ISA chips.
379 port - port # for CS4231 chip
380 mpu_port - port # for MPU-401 UART (optional), -1 = disable
381 irq - IRQ # for CS4231 chip
382 mpu_irq - IRQ # for MPU-401 UART
383 dma1 - first DMA # for CS4231 chip
384 dma2 - second DMA # for CS4231 chip
386 This module supports multiple cards. This module does not support autoprobe
387 thus main port must be specified!!! Other ports are optional.
389 The power-management is supported.
394 Module for sound cards based on CS4232/CS4232A ISA chips.
396 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
398 with isapnp=0, the following options are available:
400 port - port # for CS4232 chip (PnP setup - 0x534)
401 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
402 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
403 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
404 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
405 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
406 dma1 - first DMA # for CS4232 chip (0,1,3)
407 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
409 This module supports multiple cards. This module does not support autoprobe
410 (if ISA PnP is not used) thus main port must be specified!!! Other ports are
413 The power-management is supported.
418 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
419 CS4238B/CS4239 ISA chips.
421 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
423 with isapnp=0, the following options are available:
425 port - port # for CS4236 chip (PnP setup - 0x534)
426 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
427 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
428 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
429 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
430 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
431 dma1 - first DMA # for CS4236 chip (0,1,3)
432 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
434 This module supports multiple cards. This module does not support autoprobe
435 (if ISA PnP is not used) thus main port and control port must be
436 specified!!! Other ports are optional.
438 The power-management is supported.
443 Module for Cirrus Logic CS4281 soundchip.
445 dual_codec - Secondary codec ID (0 = disable, default)
447 This module supports multiple cards.
449 The power-management is supported.
454 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
455 CS4624/CS4630/CS4280 PCI chips.
457 external_amp - Force to enable external amplifier.
458 thinkpad - Force to enable Thinkpad's CLKRUN control.
459 mmap_valid - Support OSS mmap mode (default = 0).
461 This module supports multiple cards and autoprobe.
462 Usually external amp and CLKRUN controls are detected automatically
463 from PCI sub vendor/device ids. If they don't work, give the options
466 The power-management is supported.
471 Module for Cyrix/NatSemi Geode 5530 chip.
473 Module snd-cs5535audio
474 ----------------------
476 Module for multifunction CS5535 companion PCI device
478 The power-management is supported.
483 Module for Echoaudio Darla20
485 This module supports multiple cards.
486 The driver requires the firmware loader support on kernel.
491 Module for Echoaudio Darla24
493 This module supports multiple cards.
494 The driver requires the firmware loader support on kernel.
499 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
502 This module supports multiple cards. This module is enabled only with
505 The power-management is supported.
510 Module for the dummy sound card. This "card" doesn't do any output
511 or input, but you may use this module for any application which
512 requires a sound card (like RealPlayer).
514 The power-management is supported.
519 Module for Echoaudio 3G cards (Gina3G/Layla3G)
521 This module supports multiple cards.
522 The driver requires the firmware loader support on kernel.
527 Module for EMU10K1/EMU10k2 based PCI sound cards.
528 * Sound Blaster Live!
529 * Sound Blaster PCI 512
530 * Emu APS (partially supported)
531 * Sound Blaster Audigy
533 extin - bitmap of available external inputs for FX8010 (see bellow)
534 extout - bitmap of available external outputs for FX8010 (see bellow)
535 seq_ports - allocated sequencer ports (4 by default)
536 max_synth_voices - limit of voices used for wavetable (64 by default)
537 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
538 given in MB unit. Default value is 128.
539 enable_ir - enable IR
541 This module supports multiple cards and autoprobe.
543 Input & Output configurations [extin/extout]
544 * Creative Card wo/Digital out [0x0003/0x1f03]
545 * Creative Card w/Digital out [0x0003/0x1f0f]
546 * Creative Card w/Digital CD in [0x000f/0x1f0f]
547 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
548 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
549 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
550 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
551 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
552 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
553 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
554 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
555 * Creative Card all ins and outs [0x3fff/0x7fff]
557 The power-management is supported.
562 Module for Creative Emu10k1X (SB Live Dell OEM version)
564 This module supports multiple cards.
569 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
570 * SoundBlaster PCI 64
571 * SoundBlaster PCI 128
573 joystick - Enable joystick (default off)
575 This module supports multiple cards and autoprobe.
577 The power-management is supported.
582 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
583 * SoundBlaster PCI 64
584 * SoundBlaster PCI 128
585 * SoundBlaster Vibra PCI
587 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
588 0 = disable (default), 1 = auto-detect
590 This module supports multiple cards and autoprobe.
592 The power-management is supported.
597 Module for sound cards based on ESS ES968 chip (PnP only).
599 This module supports multiple cards, PnP and autoprobe.
601 The power-management is supported.
606 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
608 port - port # for ES-1688 chip (0x220,0x240,0x260)
609 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
610 irq - IRQ # for ES-1688 chip (5,7,9,10)
611 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
612 dma8 - DMA # for ES-1688 chip (0,1,3)
614 This module supports multiple cards and autoprobe (without MPU-401 port).
619 Module for ESS AudioDrive ES-18xx sound cards.
621 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
623 with isapnp=0, the following options are available:
625 port - port # for ES-18xx chip (0x220,0x240,0x260)
626 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
627 fm_port - port # for FM (optional, not used)
628 irq - IRQ # for ES-18xx chip (5,7,9,10)
629 dma1 - first DMA # for ES-18xx chip (0,1,3)
630 dma2 - first DMA # for ES-18xx chip (0,1,3)
632 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
633 port if native ISA PnP routines are not used).
634 When dma2 is equal with dma1, the driver works as half-duplex.
636 The power-management is supported.
641 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
643 This module supports multiple cards and autoprobe.
645 The power-management is supported.
650 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
652 total_bufsize - total buffer size in kB (1-4096kB)
653 pcm_substreams_p - playback channels (1-8, default=2)
654 pcm_substreams_c - capture channels (1-8, default=0)
655 clock - clock (0 = auto-detection)
656 use_pm - support the power-management (0 = off, 1 = on,
658 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
659 joystick - enable joystick (default off)
661 This module supports multiple cards and autoprobe.
663 The power-management is supported.
668 Module for ForteMedia FM801 based PCI sound cards.
670 tea575x_tuner - Enable TEA575x tuner
671 - 1 = MediaForte 256-PCS
672 - 2 = MediaForte 256-PCPR
673 - 3 = MediaForte 64-PCR
674 - High 16-bits are video (radio) device number + 1
675 - example: 0x10002 (MediaForte 256-PCPR, device 1)
677 This module supports multiple cards and autoprobe.
679 The power-management is supported.
684 Module for Echoaudio Gina20
686 This module supports multiple cards.
687 The driver requires the firmware loader support on kernel.
692 Module for Echoaudio Gina24
694 This module supports multiple cards.
695 The driver requires the firmware loader support on kernel.
697 Module snd-gusclassic
698 ---------------------
700 Module for Gravis UltraSound Classic sound card.
702 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
703 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
704 dma1 - DMA # for GF1 chip (1,3,5,6,7)
705 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
706 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
707 voices - GF1 voices limit (14-32)
708 pcm_voices - reserved PCM voices
710 This module supports multiple cards and autoprobe.
712 Module snd-gusextreme
713 ---------------------
715 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
717 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
718 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
719 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
720 irq - IRQ # for ES-1688 chip (5,7,9,10)
721 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
722 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
723 dma8 - DMA # for ES-1688 chip (0,1,3)
724 dma1 - DMA # for GF1 chip (1,3,5,6,7)
725 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
726 voices - GF1 voices limit (14-32)
727 pcm_voices - reserved PCM voices
729 This module supports multiple cards and autoprobe (without MPU-401 port).
734 Module for Gravis UltraSound MAX sound card.
736 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
737 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
738 dma1 - DMA # for GF1 chip (1,3,5,6,7)
739 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
740 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
741 voices - GF1 voices limit (14-32)
742 pcm_voices - reserved PCM voices
744 This module supports multiple cards and autoprobe.
749 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),
750 ATI SB450, SB600, RS600,
754 [Multiple options for each card instance]
755 model - force the model name
756 position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF)
757 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
758 bdl_pos_adj - Specifies the DMA IRQ timing delay in samples.
759 Passing -1 will make the driver to choose the appropriate
760 value based on the controller chip.
762 [Single (global) options]
763 single_cmd - Use single immediate commands to communicate with
764 codecs (for debugging only)
765 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
766 power_save - Automatic power-saving timtout (in second, 0 =
768 power_save_controller - Reset HD-audio controller in power-saving mode
771 This module supports multiple cards and autoprobe.
773 Each codec may have a model table for different configurations.
774 If your machine isn't listed there, the default (usually minimal)
775 configuration is set up. You can pass "model=<name>" option to
776 specify a certain model in such a case. There are different
777 models depending on the codec chip.
779 Model name Description
780 ---------- -----------
782 3stack 3-jack in back and a headphone out
783 3stack-digout 3-jack in back, a HP out and a SPDIF out
784 5stack 5-jack in back, 2-jack in front
785 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
786 6stack 6-jack in back, 2-jack in front
787 6stack-digout 6-jack with a SPDIF out
789 z71v 3-jack (HP shared SPDIF)
790 asus 3-jack (ASUS Mobo)
792 asus-dig ASUS with SPDIF out
793 asus-dig2 ASUS with SPDIF out (using GPIO2)
795 fujitsu Fujitsu Laptops (Pi1536)
797 lg LG laptop (m1 express dual)
798 lg-lw LG LW20/LW25 laptop
800 clevo Clevo laptops (m520G, m665n)
801 medion Medion Rim 2150
802 test for testing/debugging purpose, almost all controls can be
803 adjusted. Appearing only when compiled with
805 auto auto-config reading BIOS (default)
809 hp-3013 HP machines (3013-variant)
810 fujitsu Fujitsu S7020
812 will Will laptops (PB V7900)
813 replacer Replacer 672V
814 basic fixed pin assignment (old default model)
815 test for testing/debugging purpose, almost all controls can
816 adjusted. Appearing only when compiled with
818 auto auto-config reading BIOS (default)
821 fujitsu Fujitsu Laptop
822 hp-bpc HP xw4400/6400/8400/9400 laptops
823 hp-bpc-d7000 HP BPC D7000
824 hp-tc-t5735 HP Thin Client T5735
828 hippo Hippo (ATI) with jack detection, Sony UX-90s
829 hippo_1 Hippo (Benq) with jack detection
830 sony-assamd Sony ASSAMD
831 ultra Samsung Q1 Ultra Vista model
832 lenovo-3000 Lenovo 3000 y410
833 basic fixed pin assignment w/o SPDIF
834 auto auto-config reading BIOS (default)
837 quanta-il1 Quanta IL1 mini-notebook
841 dell Dell OEM laptops (Vostro 1200)
843 test for testing/debugging purpose, almost all controls can
844 adjusted. Appearing only when compiled with
846 auto auto-config reading BIOS (default)
852 3stack-dig 3-stack (2-channel) with SPDIF
853 3stack-6ch 3-stack (6-channel)
854 3stack-6ch-dig 3-stack (6-channel) with SPDIF
855 6stack-dig 6-stack with SPDIF
856 lenovo-101e Lenovo laptop
857 eeepc-p701 ASUS Eeepc P701
858 eeepc-ep20 ASUS Eeepc EP20
863 auto auto-config reading BIOS (default)
866 3stack-dig 3-jack with SPDIF I/O
867 6stack-dig 6-jack digital with SPDIF I/O
869 targa Targa T8, MSI-1049 T8
872 macpro MacPro support
873 mbp3 Macbook Pro rev3
874 imac24 iMac 24'' with jack detection
876 auto auto-config reading BIOS (default)
879 3stack-dig 3-jack with SPDIF I/O
880 6stack-dig 6-jack digital with SPDIF I/O
881 3stack-6ch 3-jack 6-channel
882 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
883 6stack-dig-demo 6-jack digital for Intel demo board
884 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
885 acer-aspire Acer Aspire 9810
886 medion Medion Laptops
887 medion-md2 Medion MD2
889 targa-2ch-dig Targs/MSI with 2-channel
890 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
891 lenovo-101e Lenovo 101E
892 lenovo-nb0763 Lenovo NB0763
893 lenovo-ms7195-dig Lenovo MS7195
895 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
896 6stack-dell Dell machines with 6stack (Inspiron 530)
898 clevo-m720 Clevo M720 laptop series
899 fujitsu-pi2515 Fujitsu AMILO Pi2515
900 auto auto-config reading BIOS (default)
904 3stack-dig 3-jack with SPDIF I/O
905 6stack-dig 6-jack with SPDIF I/O
906 3stack-660 3-jack (for ALC660)
907 uniwill-m31 Uniwill M31 laptop
908 toshiba Toshiba laptop support
909 asus Asus laptop support
910 asus-laptop ASUS F2/F3 laptops
911 auto auto-config reading BIOS (default)
915 3stack-dig 3-jack with SPDIF OUT
916 6stack-dig 6-jack with SPDIF OUT
917 3stack-660 3-jack (for ALC660VD)
918 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
919 lenovo Lenovo 3000 C200
920 dallas Dallas laptops
922 auto auto-config reading BIOS (default)
925 minimal 3-jack in back
926 min_fp 3-jack in back, 2-jack in front
927 full 6-jack in back, 2-jack in front
928 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
929 allout 5-jack in back, 2-jack in front, SPDIF out
930 auto auto-config reading BIOS (default)
933 3stack 3-stack mode (default)
936 AD1884A / AD1883 / AD1984A / AD1984B
937 desktop 3-stack desktop (default)
938 laptop laptop with HP jack sensing
939 mobile mobile devices with HP jack sensing
940 thinkpad Lenovo Thinkpad X300
946 basic 3-jack (default)
948 thinkpad Lenovo Thinkpad T60/X60/Z60
955 basic default configuration
956 thinkpad Lenovo Thinkpad T61/X61
960 6stack 6-jack, separate surrounds (default)
961 3stack 3-stack, shared surrounds
962 laptop 2-channel only (FSC V2060, Samsung M50)
963 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
964 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
965 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
967 AD1988/AD1988B/AD1989A/AD1989B
969 6stack-dig ditto with SPDIF
971 3stack-dig ditto with SPDIF
972 laptop 3-jack with hp-jack automute
973 laptop-dig ditto with SPDIF
974 auto auto-config reading BIOS (default)
977 laptop-hpsense Laptop with HP sense (old model laptop)
978 laptop-micsense Laptop with Mic sense (old model fujitsu)
979 laptop-hpmicsense Laptop with HP and Mic senses
981 test for testing/debugging purpose, almost all controls
982 can be adjusted. Appearing only when compiled with
986 laptop Basic Laptop config
987 laptop-hp Laptop config for some HP models (subdevice 30A5)
988 laptop-eapd Laptop config with EAPD support
989 test for testing/debugging purpose, almost all controls
990 can be adjusted. Appearing only when compiled with
994 laptop Basic Laptop config (default)
999 dell-d21 Dell (unknown)
1000 dell-d22 Dell (unknown)
1001 dell-d23 Dell (unknown)
1002 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
1003 dell-m22 Dell Latitude D620, Dell Latitude D820
1004 dell-m23 Dell XPS M1710, Dell Precision M90
1005 dell-m24 Dell Latitude 120L
1006 dell-m25 Dell Inspiron E1505n
1007 dell-m26 Dell Inspiron 1501
1008 dell-m27 Dell Inspiron E1705/9400
1009 gateway Gateway laptops with EAPD control
1010 panasonic Panasonic CF-74
1014 dell-m42 Dell (unknown)
1015 dell-m43 Dell Precision
1016 dell-m44 Dell Inspiron
1021 5stack D945 5stack + SPDIF
1022 intel-mac-v1 Intel Mac Type 1
1023 intel-mac-v2 Intel Mac Type 2
1024 intel-mac-v3 Intel Mac Type 3
1025 intel-mac-v4 Intel Mac Type 4
1026 intel-mac-v5 Intel Mac Type 5
1027 intel-mac-auto Intel Mac (detect type according to subsystem id)
1028 macmini Intel Mac Mini (equivalent with type 3)
1029 macbook Intel Mac Book (eq. type 5)
1030 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1031 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1032 imac-intel Intel iMac (eq. type 2)
1033 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1034 dell-d81 Dell (unknown)
1035 dell-d82 Dell (unknown)
1036 dell-m81 Dell (unknown)
1037 dell-m82 Dell XPS M1210
1040 ref Reference board, base config
1041 m2-2 Some Gateway MX series laptops
1042 m6 Some Gateway NX series laptops
1043 pa6 Gateway NX860 series
1045 STAC9227/9228/9229/927x
1048 5stack D965 5stack + SPDIF
1049 dell-3stack Dell Dimension E520
1050 dell-bios Fixes with Dell BIOS setup
1054 dell-m4-1 Dell desktops
1055 dell-m4-2 Dell desktops
1059 dell-m6 Dell desktops
1062 vaio Setup for VAIO FE550G/SZ110
1063 vaio-ar Setup for VAIO AR
1065 The model name "genric" is treated as a special case. When this
1066 model is given, the driver uses the generic codec parser without
1067 "codec-patch". It's sometimes good for testing and debugging.
1069 If the default configuration doesn't work and one of the above
1070 matches with your device, report it together with the PCI
1071 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1072 ML (see the section "Links and Addresses").
1074 power_save and power_save_controller options are for power-saving
1075 mode. See powersave.txt for details.
1077 Note 2: If you get click noises on output, try the module option
1078 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1079 register value without FIFO size correction as the current
1080 DMA pointer. position_fix=2 will make the driver to use
1081 the position buffer instead of reading SD_LPIB register.
1082 (Usually SD_LPLIB register is more accurate than the
1085 NB: If you get many "azx_get_response timeout" messages at
1086 loading, it's likely a problem of interrupts (e.g. ACPI irq
1087 routing). Try to boot with options like "pci=noacpi". Also, you
1088 can try "single_cmd=1" module option. This will switch the
1089 communication method between HDA controller and codecs to the
1090 single immediate commands instead of CORB/RIRB. Basically, the
1091 single command mode is provided only for BIOS, and you won't get
1092 unsolicited events, too. But, at least, this works independently
1093 from the irq. Remember this is a last resort, and should be
1094 avoided as much as possible...
1096 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1097 On some hardwares, you may need to add a proper probe_mask option
1098 to avoid the "azx_get_response timeout" problem above, instead.
1099 This occurs when the access to non-existing or non-working codec slot
1100 (likely a modem one) causes a stall of the communication via HD-audio
1101 bus. You can see which codec slots are probed by enabling
1102 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1103 proc files. Then limit the slots to probe by probe_mask option.
1104 For example, probe_mask=1 means to probe only the first slot, and
1105 probe_mask=4 means only the third slot.
1107 The power-management is supported.
1112 Module for RME Hammerfall DSP audio interface(s)
1114 This module supports multiple cards.
1116 Note: The firmware data can be automatically loaded via hotplug
1117 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1118 the firmware via hdsploader utility included in alsa-tools
1120 The firmware data is found in alsa-firmware package.
1122 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1123 module did formerly. It will allocate the buffers in advance
1124 when any HDSP cards are found. To make the buffer
1125 allocation sure, load snd-page-alloc module in the early
1126 stage of boot sequence. See "Early Buffer Allocation"
1132 Module for RME HDSP MADI board.
1134 precise_ptr - Enable precise pointer, or disable.
1135 line_outs_monitor - Send playback streams to analog outs by default.
1136 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1138 See hdspm.txt for details.
1143 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1145 This module supports autoprobe and multiple cards.
1147 Power management is _not_ supported.
1152 Module for Envy24 (ICE1712) based PCI sound cards.
1153 * MidiMan M Audio Delta 1010
1154 * MidiMan M Audio Delta 1010LT
1155 * MidiMan M Audio Delta DiO 2496
1156 * MidiMan M Audio Delta 66
1157 * MidiMan M Audio Delta 44
1158 * MidiMan M Audio Delta 410
1159 * MidiMan M Audio Audiophile 2496
1162 * TerraTec EWX 24/96
1163 * TerraTec DMX 6Fire
1165 * Hoontech SoundTrack DSP 24
1166 * Hoontech SoundTrack DSP 24 Value
1167 * Hoontech SoundTrack DSP 24 Media 7.1
1168 * Event Electronics, EZ8
1170 * Lionstracs, Mediastaton
1172 model - Use the given board model, one of the following:
1173 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1174 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1175 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1176 phase88, mediastation
1177 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1178 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1179 in msec resolution, default value is 500 (0.5 sec)
1181 This module supports multiple cards and autoprobe. Note: The consumer part
1182 is not used with all Envy24 based cards (for example in the MidiMan Delta
1185 Note: The supported board is detected by reading EEPROM or PCI
1186 SSID (if EEPROM isn't available). You can override the
1187 model by passing "model" module option in case that the
1188 driver isn't configured properly or you want to try another
1194 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1195 * MidiMan M Audio Revolution 5.1
1196 * MidiMan M Audio Revolution 7.1
1197 * MidiMan M Audio Audiophile 192
1199 * TerraTec Aureon 5.1 Sky
1200 * TerraTec Aureon 7.1 Space
1201 * TerraTec Aureon 7.1 Universe
1204 * AudioTrak Prodigy 7.1
1205 * AudioTrak Prodigy 7.1LT
1206 * AudioTrak Prodigy 192
1208 * Albatron K8X800 Pro II
1209 * Chaintech ZNF3-150
1210 * Chaintech ZNF3-250
1217 model - Use the given board model, one of the following:
1218 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1219 prodigy192, aureon51, aureon71, universe, ap192,
1220 k8x800, phase22, phase28, ms300, av710, se200pci,
1223 This module supports multiple cards and autoprobe.
1225 Note: The supported board is detected by reading EEPROM or PCI
1226 SSID (if EEPROM isn't available). You can override the
1227 model by passing "model" module option in case that the
1228 driver isn't configured properly or you want to try another
1234 Module for Echoaudio Indigo
1236 This module supports multiple cards.
1237 The driver requires the firmware loader support on kernel.
1242 Module for Echoaudio Indigo DJ
1244 This module supports multiple cards.
1245 The driver requires the firmware loader support on kernel.
1250 Module for Echoaudio Indigo IO
1252 This module supports multiple cards.
1253 The driver requires the firmware loader support on kernel.
1258 Module for AC'97 motherboards from Intel and compatibles.
1259 * Intel i810/810E, i815, i820, i830, i84x, MX440
1260 ICH5, ICH6, ICH7, ESB2
1261 * SiS 7012 (SiS 735)
1262 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1264 * AMD AMD768, AMD8111
1267 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1268 ac97_quirk - AC'97 workaround for strange hardware
1269 See "AC97 Quirk Option" section below.
1270 buggy_irq - Enable workaround for buggy interrupts on some
1271 motherboards (default yes on nForce chips,
1273 buggy_semaphore - Enable workaround for hardwares with buggy
1274 semaphores (e.g. on some ASUS laptops)
1276 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1277 from the controller chip
1278 (0 = off, 1 = on, -1 = default)
1280 This module supports one chip and autoprobe.
1282 Note: the latest driver supports auto-detection of chip clock.
1283 if you still encounter too fast playback, specify the clock
1284 explicitly via the module option "ac97_clock=41194".
1286 Joystick/MIDI ports are not supported by this driver. If your
1287 motherboard has these devices, use the ns558 or snd-mpu401
1288 modules, respectively.
1290 The power-management is supported.
1292 Module snd-intel8x0m
1293 --------------------
1295 Module for Intel ICH (i8x0) chipset MC97 modems.
1296 * Intel i810/810E, i815, i820, i830, i84x, MX440
1298 * SiS 7013 (SiS 735)
1299 * NVidia NForce, NForce2, NForce2s, NForce3
1303 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1305 This module supports one card and autoprobe.
1307 Note: The default index value of this module is -2, i.e. the first
1310 The power-management is supported.
1312 Module snd-interwave
1313 --------------------
1315 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1316 and other sound cards based on AMD InterWave (tm) chip.
1318 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1319 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1320 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1321 effect - 1 = InterWave effects enable (default 0);
1323 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1325 with isapnp=0, the following options are available:
1327 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1328 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1329 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1330 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1332 This module supports multiple cards, autoprobe and ISA PnP.
1334 Module snd-interwave-stb
1335 ------------------------
1337 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1338 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1339 circuit for extended control of bass, treble and master volume.
1341 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1342 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1343 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1344 effect - 1 = InterWave effects enable (default 0);
1346 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1348 with isapnp=0, the following options are available:
1350 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1351 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1352 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1353 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1354 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1356 This module supports multiple cards, autoprobe and ISA PnP.
1361 Module for Korg 1212 IO PCI card
1363 This module supports multiple cards.
1368 Module for Echoaudio Layla20
1370 This module supports multiple cards.
1371 The driver requires the firmware loader support on kernel.
1376 Module for Echoaudio Layla24
1378 This module supports multiple cards.
1379 The driver requires the firmware loader support on kernel.
1384 Module for Allegro/Maestro3 chips
1386 external_amp - enable external amp (enabled by default)
1387 amp_gpio - GPIO pin number for external amp (0-15) or
1388 -1 for default pin (8 for allegro, 1 for
1391 This module supports autoprobe and multiple chips.
1393 Note: the binding of amplifier is dependent on hardware.
1394 If there is no sound even though all channels are unmuted, try to
1395 specify other gpio connection via amp_gpio option.
1396 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1399 The power-management is supported.
1404 Module for Echoaudio Mia
1406 This module supports multiple cards.
1407 The driver requires the firmware loader support on kernel.
1412 Module for Miro soundcards: miroSOUND PCM 1 pro,
1414 miroSOUND PCM 20 Radio.
1416 port - Port # (0x530,0x604,0xe80,0xf40)
1417 irq - IRQ # (5,7,9,10,11)
1418 dma1 - 1st dma # (0,1,3)
1419 dma2 - 2nd dma # (0,1)
1420 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1421 mpu_irq - MPU-401 irq # (5,7,9,10)
1422 fm_port - FM Port # (0x388)
1423 wss - enable WSS mode
1424 ide - enable onboard ide support
1429 Module for Digigram miXart8 sound cards.
1431 This module supports multiple cards.
1432 Note: One miXart8 board will be represented as 4 alsa cards.
1433 See MIXART.txt for details.
1435 When the driver is compiled as a module and the hotplug firmware
1436 is supported, the firmware data is loaded via hotplug automatically.
1437 Install the necessary firmware files in alsa-firmware package.
1438 When no hotplug fw loader is available, you need to load the
1439 firmware via mixartloader utility in alsa-tools package.
1444 Module for Echoaudio Mona
1446 This module supports multiple cards.
1447 The driver requires the firmware loader support on kernel.
1452 Module for MPU-401 UART devices.
1454 port - port number or -1 (disable)
1455 irq - IRQ number or -1 (disable)
1456 pnp - PnP detection - 0 = disable, 1 = enable (default)
1458 This module supports multiple devices and PnP.
1463 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1466 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1467 irq - IRQ # for MTPAV (7,5, default=7)
1468 hwports - number of supported hardware ports, default=8.
1470 Module supports only 1 card. This module has no enable option.
1475 Module for Ego Systems (ESI) Miditerminal 4140
1477 This module supports multiple devices.
1478 Requires parport (CONFIG_PARPORT).
1483 Module for NeoMagic NM256AV/ZX chips
1485 playback_bufsize - max playback frame size in kB (4-128kB)
1486 capture_bufsize - max capture frame size in kB (4-128kB)
1487 force_ac97 - 0 or 1 (disabled by default)
1488 buffer_top - specify buffer top address
1489 use_cache - 0 or 1 (disabled by default)
1490 vaio_hack - alias buffer_top=0x25a800
1491 reset_workaround - enable AC97 RESET workaround for some laptops
1492 reset_workaround2 - enable extended AC97 RESET workaround for some
1495 This module supports one chip and autoprobe.
1497 The power-management is supported.
1499 Note: on some notebooks the buffer address cannot be detected
1500 automatically, or causes hang-up during initialization.
1501 In such a case, specify the buffer top address explicitly via
1502 the buffer_top option.
1504 Sony F250: buffer_top=0x25a800
1505 Sony F270: buffer_top=0x272800
1506 The driver supports only ac97 codec. It's possible to force
1507 to initialize/use ac97 although it's not detected. In such a
1508 case, use force_ac97=1 option - but *NO* guarantee whether it
1511 Note: The NM256 chip can be linked internally with non-AC97
1512 codecs. This driver supports only the AC97 codec, and won't work
1513 with machines with other (most likely CS423x or OPL3SAx) chips,
1514 even though the device is detected in lspci. In such a case, try
1515 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1516 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1517 and proper hardware parameters in the case without ISA PnP.
1519 Note: some laptops need a workaround for AC97 RESET. For the
1520 known hardware like Dell Latitude LS and Sony PCG-F305, this
1521 workaround is enabled automatically. For other laptops with a
1522 hard freeze, you can try reset_workaround=1 option.
1524 Note: Dell Latitude CSx laptops have another problem regarding
1525 AC97 RESET. On these laptops, reset_workaround2 option is
1526 turned on as default. This option is worth to try if the
1527 previous reset_workaround option doesn't help.
1529 Note: This driver is really crappy. It's a porting from the
1530 OSS driver, which is a result of black-magic reverse engineering.
1531 The detection of codec will fail if the driver is loaded *after*
1532 X-server as described above. You might be able to force to load
1533 the module, but it may result in hang-up. Hence, make sure that
1534 you load this module *before* X if you encounter this kind of
1540 Module for Yamaha OPL3-SA2/SA3 sound cards.
1542 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1544 with isapnp=0, the following options are available:
1546 port - control port # for OPL3-SA chip (0x370)
1547 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1548 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1549 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1550 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1551 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1552 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1553 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1555 This module supports multiple cards and ISA PnP. It does not support
1556 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1558 The power-management is supported.
1560 Module snd-opti92x-ad1848
1561 -------------------------
1563 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1564 Module works with OAK Mozart cards as well.
1566 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1568 with isapnp=0, the following options are available:
1570 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1571 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1572 fm_port - port # for OPL3 device (0x388)
1573 irq - IRQ # for WSS chip (5,7,9,10,11)
1574 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1575 dma1 - first DMA # for WSS chip (0,1,3)
1577 This module supports only one card, autoprobe and PnP.
1579 Module snd-opti92x-cs4231
1580 -------------------------
1582 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1584 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1586 with isapnp=0, the following options are available:
1588 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1589 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1590 fm_port - port # for OPL3 device (0x388)
1591 irq - IRQ # for WSS chip (5,7,9,10,11)
1592 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1593 dma1 - first DMA # for WSS chip (0,1,3)
1594 dma2 - second DMA # for WSS chip (0,1,3)
1596 This module supports only one card, autoprobe and PnP.
1601 Module for sound cards based on OPTi 82c93x chips.
1603 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1605 with isapnp=0, the following options are available:
1607 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1608 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1609 fm_port - port # for OPL3 device (0x388)
1610 irq - IRQ # for WSS chip (5,7,9,10,11)
1611 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1612 dma1 - first DMA # for WSS chip (0,1,3)
1613 dma2 - second DMA # for WSS chip (0,1,3)
1615 This module supports only one card, autoprobe and PnP.
1620 Module for sound cards based on the C-Media CMI8788 chip:
1622 * AuzenTech X-Meridian
1624 * Club3D Theatron DTS
1626 * Razer Barracuda AC-1
1629 This module supports autoprobe and multiple cards.
1631 Power management is _not_ supported.
1636 Module for internal PC-Speaker.
1638 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1640 This module supports system beeps, some kind of PCM playback and
1641 even a few mixer controls.
1646 Module for Digigram PCXHR boards
1648 This module supports multiple cards.
1650 Module snd-portman2x4
1651 ---------------------
1653 Module for Midiman Portman 2x4 parallel port MIDI interface
1655 This module supports multiple cards.
1657 Module snd-powermac (on ppc only)
1658 ---------------------------------
1660 Module for PowerMac, iMac and iBook on-board soundchips
1662 enable_beep - enable beep using PCM (enabled as default)
1664 Module supports autoprobe a chip.
1666 Note: the driver may have problems regarding endianess.
1668 The power-management is supported.
1670 Module snd-pxa2xx-ac97 (on arm only)
1671 ------------------------------------
1673 Module for AC97 driver for the Intel PXA2xx chip
1675 For ARM architecture only.
1677 The power-management is supported.
1682 Module for Conexant Riptide chip
1684 joystick_port - Joystick port # (default: 0x200)
1685 mpu_port - MPU401 port # (default: 0x330)
1686 opl3_port - OPL3 port # (default: 0x388)
1688 This module supports multiple cards.
1689 The driver requires the firmware loader support on kernel.
1690 You need to install the firmware file "riptide.hex" to the standard
1691 firmware path (e.g. /lib/firmware).
1696 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1697 Prodif96 and Prodif Gold) sound cards.
1699 This module supports multiple cards.
1704 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1706 This module supports multiple cards.
1711 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1713 precise_ptr - Enable precise pointer (doesn't work reliably).
1716 This module supports multiple cards.
1718 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1719 module did formerly. It will allocate the buffers in advance
1720 when any RME9652 cards are found. To make the buffer
1721 allocation sure, load snd-page-alloc module in the early
1722 stage of boot sequence. See "Early Buffer Allocation"
1725 Module snd-sa11xx-uda1341 (on arm only)
1726 ---------------------------------------
1728 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1730 Module supports only one card.
1731 Module has no enable and index options.
1733 The power-management is supported.
1738 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1742 port - port # for SB DSP chip (0x220,0x240,0x260)
1743 irq - IRQ # for SB DSP chip (5,7,9,10)
1744 dma8 - DMA # for SB DSP chip (1,3)
1746 This module supports multiple cards and autoprobe.
1748 The power-management is supported.
1750 Module snd-sb16 and snd-sbawe
1751 -----------------------------
1753 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1754 SoundBlaster AWE 32 (PnP),
1755 SoundBlaster AWE 64 PnP
1757 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1758 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1759 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1761 with isapnp=0, the following options are available:
1763 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1764 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1765 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1766 (snd-sbawe module only)
1767 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1768 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1769 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1771 This module supports multiple cards, autoprobe and ISA PnP.
1773 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1774 disable 16bit DMA with dma16 = -1 module parameter.
1775 Also, all Sound Blaster 16 type cards can operate in 16-bit
1776 half duplex mode through 8-bit DMA channel by disabling their
1779 The power-management is supported.
1784 Module for Gallant SC-6000 soundcard.
1786 port - Port # (0x220 or 0x240)
1787 mss_port - MSS Port # (0x530 or 0xe80)
1788 irq - IRQ # (5,7,9,10,11)
1789 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1792 This module supports multiple cards.
1794 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1799 Module for Aztech Sound Galaxy sound card.
1801 sbport - Port # for SB16 interface (0x220,0x240)
1802 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1803 irq - IRQ # (7,9,10,11)
1806 This module supports multiple cards.
1808 The power-management is supported.
1813 Module for ENSONIQ SoundScape PnP cards.
1815 port - Port # (PnP setup)
1816 wss_port - WSS Port # (PnP setup)
1817 irq - IRQ # (PnP setup)
1818 mpu_irq - MPU-401 IRQ # (PnP setup)
1819 dma - DMA # (PnP setup)
1820 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1822 This module supports multiple cards. ISA PnP must be enabled.
1823 You need sscape_ctl tool in alsa-tools package for loading
1826 Module snd-sun-amd7930 (on sparc only)
1827 --------------------------------------
1829 Module for AMD7930 sound chips found on Sparcs.
1831 This module supports multiple cards.
1833 Module snd-sun-cs4231 (on sparc only)
1834 -------------------------------------
1836 Module for CS4231 sound chips found on Sparcs.
1838 This module supports multiple cards.
1840 Module snd-sun-dbri (on sparc only)
1841 -----------------------------------
1843 Module for DBRI sound chips found on Sparcs.
1845 This module supports multiple cards.
1847 Module snd-wavefront
1848 --------------------
1850 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1852 use_cs4232_midi - Use CS4232 MPU-401 interface
1853 (inaccessibly located inside your computer)
1854 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1856 with isapnp=0, the following options are available:
1858 cs4232_pcm_port - Port # for CS4232 PCM interface.
1859 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1860 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1861 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1862 ics2115_port - Port # for ICS2115
1863 ics2115_irq - IRQ # for ICS2115
1864 fm_port - FM OPL-3 Port #
1865 dma1 - DMA1 # for CS4232 PCM interface.
1866 dma2 - DMA2 # for CS4232 PCM interface.
1868 The below are options for wavefront_synth features:
1869 wf_raw - Assume that we need to boot the OS (default:no)
1870 If yes, then during driver loading, the state of the board is
1871 ignored, and we reset the board and load the firmware anyway.
1872 fx_raw - Assume that the FX process needs help (default:yes)
1873 If false, we'll leave the FX processor in whatever state it is
1874 when the driver is loaded. The default is to download the
1875 microprogram and associated coefficients to set it up for
1876 "default" operation, whatever that means.
1877 debug_default - Debug parameters for card initialization
1878 wait_usecs - How long to wait without sleeping, usecs
1880 This magic number seems to give pretty optimal throughput
1881 based on my limited experimentation.
1882 If you want to play around with it and find a better value, be
1883 my guest. Remember, the idea is to get a number that causes us
1884 to just busy wait for as many WaveFront commands as possible,
1885 without coming up with a number so large that we hog the whole
1887 Specifically, with this number, out of about 134,000 status
1888 waits, only about 250 result in a sleep.
1889 sleep_interval - How long to sleep when waiting for reply
1891 sleep_tries - How many times to try sleeping during a wait
1893 ospath - Pathname to processed ICS2115 OS firmware
1894 (default:wavefront.os)
1895 The path name of the ISC2115 OS firmware. In the recent
1896 version, it's handled via firmware loader framework, so it
1897 must be installed in the proper path, typically,
1899 reset_time - How long to wait for a reset to take effect
1901 ramcheck_time - How many seconds to wait for the RAM test
1903 osrun_time - How many seconds to wait for the ICS2115 OS
1906 This module supports multiple cards and ISA PnP.
1908 Note: the firmware file "wavefront.os" was located in the earlier
1909 version in /etc. Now it's loaded via firmware loader, and
1910 must be in the proper firmware path, such as /lib/firmware.
1911 Copy (or symlink) the file appropriately if you get an error
1912 regarding firmware downloading after upgrading the kernel.
1914 Module snd-sonicvibes
1915 ---------------------
1917 Module for S3 SonicVibes PCI sound cards.
1918 * PINE Schubert 32 PCI
1920 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1921 - SoundCard must have onboard SRAM for this.
1922 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1924 This module supports multiple cards and autoprobe.
1926 Module snd-serial-u16550
1927 ------------------------
1929 Module for UART16550A serial MIDI ports.
1931 port - port # for UART16550A chip
1932 irq - IRQ # for UART16550A chip, -1 = poll mode
1933 speed - speed in bauds (9600,19200,38400,57600,115200)
1935 base - base for divisor in bauds (57600,115200,230400,460800)
1937 outs - number of MIDI ports in a serial port (1-4)
1939 adaptor - Type of adaptor.
1940 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1941 3 = MS-124W M/B, 4 = Generic
1943 This module supports multiple cards. This module does not support autoprobe
1944 thus the main port must be specified!!! Other options are optional.
1949 Module for Trident 4DWave DX/NX sound cards.
1950 * Best Union Miss Melody 4DWave PCI
1952 * Warpspeed ONSpeed 4DWave PCI
1955 * CHIC True Sound 4Dwave
1956 * Shark Predator4D-PCI
1957 * Jaton SonicWave 4D
1959 pcm_channels - max channels (voices) reserved for PCM
1960 wavetable_size - max wavetable size in kB (4-?kb)
1962 This module supports multiple cards and autoprobe.
1964 The power-management is supported.
1966 Module snd-usb-audio
1967 --------------------
1969 Module for USB audio and USB MIDI devices.
1971 vid - Vendor ID for the device (optional)
1972 pid - Product ID for the device (optional)
1973 device_setup - Device specific magic number (optional)
1974 - Influence depends on the device
1977 This module supports multiple devices, autoprobe and hotplugging.
1979 Module snd-usb-caiaq
1980 --------------------
1982 Module for caiaq UB audio interfaces,
1983 * Native Instruments RigKontrol2
1984 * Native Instruments Kore Controller
1985 * Native Instruments Audio Kontrol 1
1986 * Native Instruments Audio 8 DJ
1988 This module supports multiple devices, autoprobe and hotplugging.
1990 Module snd-usb-usx2y
1991 --------------------
1993 Module for Tascam USB US-122, US-224 and US-428 devices.
1995 This module supports multiple devices, autoprobe and hotplugging.
1997 Note: you need to load the firmware via usx2yloader utility included
1998 in alsa-tools and alsa-firmware packages.
2003 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2004 8233A, 8233C, 8235, 8237 (south) bridge.
2006 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2008 joystick - Enable joystick (default off) [VIA686A/686B only]
2009 ac97_clock - AC'97 codec clock base (default 48000Hz)
2010 dxs_support - support DXS channels,
2011 0 = auto (default), 1 = enable, 2 = disable,
2012 3 = 48k only, 4 = no VRA, 5 = enable any sample
2013 rate and different sample rates on different
2015 [VIA8233/C, 8235, 8237 only]
2016 ac97_quirk - AC'97 workaround for strange hardware
2017 See "AC97 Quirk Option" section below.
2019 This module supports one chip and autoprobe.
2021 Note: on some SMP motherboards like MSI 694D the interrupts might
2022 not be generated properly. In such a case, please try to
2023 set the SMP (or MPS) version on BIOS to 1.1 instead of
2024 default value 1.4. Then the interrupt number will be
2025 assigned under 15. You might also upgrade your BIOS.
2027 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2028 channels as the first PCM. On these channels, up to 4
2029 streams can be played at the same time, and the controller
2030 can perform sample rate conversion with separate rates for
2032 As default (dxs_support = 0), 48k fixed rate is chosen
2033 except for the known devices since the output is often
2034 noisy except for 48k on some mother boards due to the
2036 Please try once dxs_support=5 and if it works on other
2037 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2038 know the PCI subsystem vendor/device id's (output of
2040 If dxs_support=5 does not work, try dxs_support=4; if it
2041 doesn't work too, try dxs_support=1. (dxs_support=1 is
2042 usually for old motherboards. The correct implemented
2043 board should work with 4 or 5.) If it still doesn't
2044 work and the default setting is ok, dxs_support=3 is the
2045 right choice. If the default setting doesn't work at all,
2046 try dxs_support=2 to disable the DXS channels.
2047 In any cases, please let us know the result and the
2048 subsystem vendor/device ids. See "Links and Addresses"
2051 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2052 additionally. The mpu_port option is for VIA686 chips only.
2054 The power-management is supported.
2056 Module snd-via82xx-modem
2057 ------------------------
2059 Module for VIA82xx AC97 modem
2061 ac97_clock - AC'97 codec clock base (default 48000Hz)
2063 This module supports one card and autoprobe.
2065 Note: The default index value of this module is -2, i.e. the first
2068 The power-management is supported.
2073 Module for virtual rawmidi devices.
2074 This module creates virtual rawmidi devices which communicate
2075 to the corresponding ALSA sequencer ports.
2077 midi_devs - MIDI devices # (1-4, default=4)
2079 This module supports multiple cards.
2084 Module for sound cards based on the Asus AV200 chip, i.e.,
2085 Xonar D2 and Xonar D2X.
2087 This module supports autoprobe and multiple cards.
2089 Power management is _not_ supported.
2094 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2096 mic - Enable Microphone on V222 Mic (NYI)
2097 ibl - Capture IBL size. (default = 0, minimum size)
2099 This module supports multiple cards.
2101 When the driver is compiled as a module and the hotplug firmware
2102 is supported, the firmware data is loaded via hotplug automatically.
2103 Install the necessary firmware files in alsa-firmware package.
2104 When no hotplug fw loader is available, you need to load the
2105 firmware via vxloader utility in alsa-tools package. To invoke
2106 vxloader automatically, add the following to /etc/modprobe.conf
2108 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2110 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2111 /etc/modules.conf, instead.)
2112 IBL size defines the interrupts period for PCM. The smaller size
2113 gives smaller latency but leads to more CPU consumption, too.
2114 The size is usually aligned to 126. As default (=0), the smallest
2115 size is chosen. The possible IBL values can be found in
2116 /proc/asound/cardX/vx-status proc file.
2118 The power-management is supported.
2123 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2125 ibl - Capture IBL size. (default = 0, minimum size)
2127 This module supports multiple cards. The module is compiled only when
2128 PCMCIA is supported on kernel.
2130 With the older 2.6.x kernel, to activate the driver via the card
2131 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2132 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2133 longer require a config file.
2135 When the driver is compiled as a module and the hotplug firmware
2136 is supported, the firmware data is loaded via hotplug automatically.
2137 Install the necessary firmware files in alsa-firmware package.
2138 When no hotplug fw loader is available, you need to load the
2139 firmware via vxloader utility in alsa-tools package.
2141 About capture IBL, see the description of snd-vx222 module.
2143 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2146 The power-management is supported.
2151 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2153 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2154 1 (auto-detect for YMF744/754 only)
2155 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2156 1 (auto-detect for YMF744/754 only)
2157 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2159 rear_switch - enable shared rear/line-in switch (bool)
2161 This module supports autoprobe and multiple chips.
2163 The power-management is supported.
2165 Module snd-pdaudiocf
2166 --------------------
2168 Module for Sound Core PDAudioCF sound card.
2170 The power-management is supported.
2176 The ac97_quirk option is used to enable/override the workaround for
2177 specific devices on drivers for on-board AC'97 controllers like
2178 snd-intel8x0. Some hardware have swapped output pins between Master
2179 and Headphone, or Surround (thanks to confusion of AC'97
2180 specifications from version to version :-)
2182 The driver provides the auto-detection of known problematic devices,
2183 but some might be unknown or wrongly detected. In such a case, pass
2184 the proper value with this option.
2186 The following strings are accepted:
2187 - default Don't override the default setting
2188 - none Disable the quirk
2189 - hp_only Bind Master and Headphone controls as a single control
2190 - swap_hp Swap headphone and master controls
2191 - swap_surround Swap master and surround controls
2192 - ad_sharing For AD1985, turn on OMS bit and use headphone
2193 - alc_jack For ALC65x, turn on the jack sense mode
2194 - inv_eapd Inverted EAPD implementation
2195 - mute_led Bind EAPD bit for turning on/off mute LED
2197 For backward compatibility, the corresponding integer value -1, 0,
2198 ... are accepted, too.
2200 For example, if "Master" volume control has no effect on your device
2201 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2204 Configuring Non-ISAPNP Cards
2205 ============================
2207 When the kernel is configured with ISA-PnP support, the modules
2208 supporting the isapnp cards will have module options "isapnp".
2209 If this option is set, *only* the ISA-PnP devices will be probed.
2210 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2211 together with the proper i/o and irq configuration.
2213 When the kernel is configured without ISA-PnP support, isapnp option
2214 will be not built in.
2217 Module Autoloading Support
2218 ==========================
2220 The ALSA drivers can be loaded automatically on demand by defining
2221 module aliases. The string 'snd-card-%1' is requested for ALSA native
2222 devices where %i is sound card number from zero to seven.
2224 To auto-load an ALSA driver for OSS services, define the string
2225 'sound-slot-%i' where %i means the slot number for OSS, which
2226 corresponds to the card index of ALSA. Usually, define this
2227 as the same card module.
2229 An example configuration for a single emu10k1 card is like below:
2230 ----- /etc/modprobe.conf
2231 alias snd-card-0 snd-emu10k1
2232 alias sound-slot-0 snd-emu10k1
2233 ----- /etc/modprobe.conf
2235 The available number of auto-loaded sound cards depends on the module
2236 option "cards_limit" of snd module. As default it's set to 1.
2237 To enable the auto-loading of multiple cards, specify the number of
2238 sound cards in that option.
2240 When multiple cards are available, it'd better to specify the index
2241 number for each card via module option, too, so that the order of
2242 cards is kept consistent.
2244 An example configuration for two sound cards is like below:
2246 ----- /etc/modprobe.conf
2248 options snd cards_limit=2
2249 alias snd-card-0 snd-interwave
2250 alias snd-card-1 snd-ens1371
2251 options snd-interwave index=0
2252 options snd-ens1371 index=1
2254 alias sound-slot-0 snd-interwave
2255 alias sound-slot-1 snd-ens1371
2256 ----- /etc/modprobe.conf
2258 In this example, the interwave card is always loaded as the first card
2259 (index 0) and ens1371 as the second (index 1).
2261 Alternative (and new) way to fixate the slot assignment is to use
2262 "slots" option of snd module. In the case above, specify like the
2265 options snd slots=snd-interwave,snd-ens1371
2267 Then, the first slot (#0) is reserved for snd-interwave driver, and
2268 the second (#1) for snd-ens1371. You can omit index option in each
2269 driver if slots option is used (although you can still have them at
2270 the same time as long as they don't conflict).
2272 The slots option is especially useful for avoiding the possible
2273 hot-plugging and the resultant slot conflict. For example, in the
2274 case above again, the first two slots are already reserved. If any
2275 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2276 snd-ens1371, it will be assigned to the third or later slot.
2278 When a module name is given with '!', the slot will be given for any
2279 modules but that name. For example, "slots=!snd-pcsp" will reserve
2280 the first slot for any modules but snd-pcsp.
2283 ALSA PCM devices to OSS devices mapping
2284 =======================================
2286 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2287 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2288 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2289 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2290 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2291 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2292 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2293 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2294 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2296 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2297 sound card number and second means device number. The ALSA devices
2298 have either 'c' or 'p' suffix indicating the direction, capture and
2299 playback, respectively.
2301 Please note that the device mapping above may be varied via the module
2302 options of snd-pcm-oss module.
2305 Proc interfaces (/proc/asound)
2306 ==============================
2308 /proc/asound/card#/pcm#[cp]/oss
2309 -------------------------------
2310 String "erase" - erase all additional informations about OSS applications
2311 String "<app_name> <fragments> <fragment_size> [<options>]"
2313 <app_name> - name of application with (higher priority) or without path
2314 <fragments> - number of fragments or zero if auto
2315 <fragment_size> - size of fragment in bytes or zero if auto
2316 <options> - optional parameters
2317 - disable the application tries to open a pcm device for
2318 this channel but does not want to use it.
2319 (Cause a bug or mmap needs)
2320 It's good for Quake etc...
2321 - direct don't use plugins
2322 - block force block mode (rvplayer)
2323 - non-block force non-block mode
2324 - whole-frag write only whole fragments (optimization affecting
2326 - no-silence do not fill silence ahead to avoid clicks
2327 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2328 instead of filled blocks
2330 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2331 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2332 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2335 Early Buffer Allocation
2336 =======================
2338 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2339 sometimes it's too late to find such spaces when the driver module is
2340 actually loaded due to memory fragmentation. You can pre-allocate the
2341 PCM buffers by loading snd-page-alloc module and write commands to its
2342 proc file in prior, for example, in the early boot stage like
2343 /etc/init.d/*.local scripts.
2345 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2346 usage of page allocation. In writing, you can send the following
2347 commands to the snd-page-alloc driver:
2349 - add VENDOR DEVICE MASK SIZE BUFFERS
2351 VENDOR and DEVICE are PCI vendor and device IDs. They take
2352 integer numbers (0x prefix is needed for the hex).
2353 MASK is the PCI DMA mask. Pass 0 if not restricted.
2354 SIZE is the size of each buffer to allocate. You can pass
2355 k and m suffix for KB and MB. The max number is 16MB.
2356 BUFFERS is the number of buffers to allocate. It must be greater
2357 than 0. The max number is 4.
2361 This will erase the all pre-allocated buffers which are not in
2368 ALSA project homepage
2369 http://www.alsa-project.org
2371 ALSA Bug Tracking System
2372 https://bugtrack.alsa-project.org/bugs/
2375 mailto:alsa-devel@alsa-project.org
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