2 Advanced Linux Sound Architecture - Driver
3 ==========================================
10 To enable ALSA support you need at least to build the kernel with
11 primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,
12 you don't have to choose any of the OSS modules.
14 Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
15 PCM supports if you want to run OSS applications with ALSA.
17 If you want to support the WaveTable functionality on cards such as
18 SB Live! then you need to enable "Sequencer support"
19 (CONFIG_SND_SEQUENCER).
21 To make ALSA debug messages more verbose, enable the "Verbose printk"
22 and "Debug" options. To check for memory leaks, turn on "Debug memory"
23 too. "Debug detection" will add checks for the detection of cards.
25 Please note that all the ALSA ISA drivers support the Linux isapnp API
26 (if the card supports ISA PnP). You don't need to configure the cards
33 This depends on your distribution, but normally you use the /dev/MAKEDEV
34 script to create the necessary device nodes. On some systems you use a
35 script named 'snddevices'.
41 The user can load modules with options. If the module supports more than
42 one card and you have more than one card of the same type then you can
43 specify multiple values for the option separated by commas.
45 Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
50 The core ALSA module. It is used by all ALSA card drivers.
51 It takes the following options which have global effects.
53 major - major number for sound driver
56 - limiting card index for auto-loading (1-8)
58 - For auto-loading more than one card, specify this
59 option together with snd-card-X aliases.
60 slots - Reserve the slot index for the given driver.
61 This option takes multiple strings.
62 See "Module Autoloading Support" section for details.
67 The PCM OSS emulation module.
68 This module takes options which change the mapping of devices.
70 dsp_map - PCM device number maps assigned to the 1st OSS device.
72 adsp_map - PCM device number maps assigned to the 2st OSS device.
75 - Don't block opening busy PCM devices. Default: 1
77 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
78 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
79 to PCM #0 of the card #0.
80 For changing the second or later card, specify the option with
81 commas, such like "dsp_map=0,1".
83 nonblock_open option is used to change the behavior of the PCM
84 regarding opening the device. When this option is non-zero,
85 opening a busy OSS PCM device won't be blocked but return
86 immediately with EAGAIN (just like O_NONBLOCK flag).
91 This module takes options which change the mapping of devices.
92 similar to those of the snd-pcm-oss module.
94 midi_map - MIDI device number maps assigned to the 1st OSS device.
96 amidi_map - MIDI device number maps assigned to the 2st OSS device.
99 Common parameters for top sound card modules
100 --------------------------------------------
102 Each of top level sound card module takes the following options.
104 index - index (slot #) of sound card
105 - Values: 0 through 31 or negative
106 - If nonnegative, assign that index number
107 - if negative, interpret as a bitmask of permissible
108 indices; the first free permitted index is assigned
110 id - card ID (identifier or name)
111 - Can be up to 15 characters long
112 - Default: the card type
113 - A directory by this name is created under /proc/asound/
114 containing information about the card
115 - This ID can be used instead of the index number in
118 - Default: enabled, for PCI and ISA PnP cards
123 Module for AdLib FM cards.
125 port - port # for OPL chip
127 This module supports multiple cards. It does not support autoprobe, so
128 the port must be specified. For actual AdLib FM cards it will be 0x388.
129 Note that this card does not have PCM support and no mixer; only FM
132 Make sure you have "sbiload" from the alsa-tools package available and,
133 after loading the module, find out the assigned ALSA sequencer port
134 number through "sbiload -l". Example output:
136 Port Client name Port name
137 64:0 OPL2 FM synth OPL2 FM Port
139 Load the std.sb and drums.sb patches also supplied by sbiload:
141 sbiload -p 64:0 std.sb drums.sb
143 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
144 instead. To have the card produce sound, use aplaymidi from alsa-utils:
146 aplaymidi -p 64:0 foo.mid
151 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
153 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
155 This module supports multiple cards, autoprobe and PnP.
160 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
162 port - port # for AD1848 chip
163 irq - IRQ # for AD1848 chip
164 dma1 - DMA # for AD1848 chip (0,1,3)
166 This module supports multiple cards. It does not support autoprobe
167 thus main port must be specified!!! Other ports are optional.
169 The power-management is supported.
174 Module for Analog Devices AD1889 chips.
176 ac97_quirk - AC'97 workaround for strange hardware
177 See the description of intel8x0 module for details.
179 This module supports multiple cards.
184 Module for ALi M5451 PCI chip.
186 pcm_channels - Number of hardware channels assigned for PCM
187 spdif - Support SPDIF I/O
190 This module supports one chip and autoprobe.
192 The power-management is supported.
197 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
199 This module supports multiple cards, autoprobe and PnP.
201 The power-management is supported.
206 Module for Avance Logic ALS300 and ALS300+
208 This module supports multiple cards.
210 The power-management is supported.
215 Module for sound cards based on Avance Logic ALS4000 PCI chip.
217 joystick_port - port # for legacy joystick support.
218 0 = disabled (default), 1 = auto-detect
220 This module supports multiple cards, autoprobe and PnP.
222 The power-management is supported.
227 Module for ATI IXP 150/200/250/400 AC97 controllers.
229 ac97_clock - AC'97 clock (default = 48000)
230 ac97_quirk - AC'97 workaround for strange hardware
231 See "AC97 Quirk Option" section below.
232 ac97_codec - Workaround to specify which AC'97 codec
233 instead of probing. If this works for you
234 file a bug with your `lspci -vn` output.
236 -1 -- Default behavior.
237 0-2 -- Use the specified codec.
238 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
240 This module supports one card and autoprobe.
242 ATI IXP has two different methods to control SPDIF output. One is
243 over AC-link and another is over the "direct" SPDIF output. The
244 implementation depends on the motherboard, and you'll need to
245 choose the correct one via spdif_aclink module option.
247 The power-management is supported.
249 Module snd-atiixp-modem
250 -----------------------
252 Module for ATI IXP 150/200/250 AC97 modem controllers.
254 This module supports one card and autoprobe.
256 Note: The default index value of this module is -2, i.e. the first
259 The power-management is supported.
261 Module snd-au8810, snd-au8820, snd-au8830
262 -----------------------------------------
264 Module for Aureal Vortex, Vortex2 and Advantage device.
266 pcifix - Control PCI workarounds
267 0 = Disable all workarounds
268 1 = Force the PCI latency of the Aureal card to 0xff
269 2 = Force the Extend PCI#2 Internal Master for Efficient
270 Handling of Dummy Requests on the VIA KT133 AGP Bridge
271 3 = Force both settings
272 255 = Autodetect what is required (default)
274 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
275 EQ, mpu401, gameport. A3D and wavetable support are still in development.
276 Development and reverse engineering work is being coordinated at
277 http://savannah.nongnu.org/projects/openvortex/
278 SPDIF output has a copy of the AC97 codec output, unless you use the
279 "spdif" pcm device, which allows raw data passthru.
280 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
283 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
284 control correctly. If you have problems regarding this, try
285 another ALSA compliant mixer (alsamixer works).
290 Module for Audiowerk2 sound card
292 This module supports multiple cards.
297 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
299 This module supports multiple cards, PnP and autoprobe.
301 The power-management is supported.
306 Module for sound cards based on Aztech AZF3328 PCI chip.
308 joystick - Enable joystick (default off)
310 This module supports multiple cards.
315 Module for video cards based on Bt87x chips.
317 digital_rate - Override the default digital rate (Hz)
318 load_all - Load the driver even if the card model isn't known
320 This module supports multiple cards.
322 Note: The default index value of this module is -2, i.e. the first
328 Module for Creative Audigy LS and SB Live 24bit
330 This module supports multiple cards.
336 Module for sound cards based on C-Media CMI8330 ISA chips.
338 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
340 with isapnp=0, the following options are available:
342 wssport - port # for CMI8330 chip (WSS)
343 wssirq - IRQ # for CMI8330 chip (WSS)
344 wssdma - first DMA # for CMI8330 chip (WSS)
345 sbport - port # for CMI8330 chip (SB16)
346 sbirq - IRQ # for CMI8330 chip (SB16)
347 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
348 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
350 This module supports multiple cards and autoprobe.
352 The power-management is supported.
357 Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
359 mpu_port - port address of MIDI interface (8338 only):
360 0x300,0x310,0x320,0x330 = legacy port,
361 0 = disable (default)
362 fm_port - port address of OPL-3 FM synthesizer (8x38 only):
364 1 = integrated PCI port (default on 8738),
366 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
368 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
370 This module supports autoprobe and multiple cards.
372 The power-management is supported.
377 Module for sound cards based on CS4231 ISA chips.
379 port - port # for CS4231 chip
380 mpu_port - port # for MPU-401 UART (optional), -1 = disable
381 irq - IRQ # for CS4231 chip
382 mpu_irq - IRQ # for MPU-401 UART
383 dma1 - first DMA # for CS4231 chip
384 dma2 - second DMA # for CS4231 chip
386 This module supports multiple cards. This module does not support autoprobe
387 thus main port must be specified!!! Other ports are optional.
389 The power-management is supported.
394 Module for sound cards based on CS4232/CS4232A ISA chips.
396 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
398 with isapnp=0, the following options are available:
400 port - port # for CS4232 chip (PnP setup - 0x534)
401 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
402 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
403 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
404 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
405 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
406 dma1 - first DMA # for CS4232 chip (0,1,3)
407 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
409 This module supports multiple cards. This module does not support autoprobe
410 (if ISA PnP is not used) thus main port must be specified!!! Other ports are
413 The power-management is supported.
418 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
419 CS4238B/CS4239 ISA chips.
421 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
423 with isapnp=0, the following options are available:
425 port - port # for CS4236 chip (PnP setup - 0x534)
426 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
427 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
428 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
429 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
430 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
431 dma1 - first DMA # for CS4236 chip (0,1,3)
432 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
434 This module supports multiple cards. This module does not support autoprobe
435 (if ISA PnP is not used) thus main port and control port must be
436 specified!!! Other ports are optional.
438 The power-management is supported.
443 Module for Cirrus Logic CS4281 soundchip.
445 dual_codec - Secondary codec ID (0 = disable, default)
447 This module supports multiple cards.
449 The power-management is supported.
454 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
455 CS4624/CS4630/CS4280 PCI chips.
457 external_amp - Force to enable external amplifier.
458 thinkpad - Force to enable Thinkpad's CLKRUN control.
459 mmap_valid - Support OSS mmap mode (default = 0).
461 This module supports multiple cards and autoprobe.
462 Usually external amp and CLKRUN controls are detected automatically
463 from PCI sub vendor/device ids. If they don't work, give the options
466 The power-management is supported.
471 Module for Cyrix/NatSemi Geode 5530 chip.
473 Module snd-cs5535audio
474 ----------------------
476 Module for multifunction CS5535 companion PCI device
478 The power-management is supported.
483 Module for Echoaudio Darla20
485 This module supports multiple cards.
486 The driver requires the firmware loader support on kernel.
491 Module for Echoaudio Darla24
493 This module supports multiple cards.
494 The driver requires the firmware loader support on kernel.
499 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
502 This module supports multiple cards. This module is enabled only with
505 The power-management is supported.
510 Module for the dummy sound card. This "card" doesn't do any output
511 or input, but you may use this module for any application which
512 requires a sound card (like RealPlayer).
514 The power-management is supported.
519 Module for Echoaudio 3G cards (Gina3G/Layla3G)
521 This module supports multiple cards.
522 The driver requires the firmware loader support on kernel.
527 Module for EMU10K1/EMU10k2 based PCI sound cards.
528 * Sound Blaster Live!
529 * Sound Blaster PCI 512
530 * Emu APS (partially supported)
531 * Sound Blaster Audigy
533 extin - bitmap of available external inputs for FX8010 (see bellow)
534 extout - bitmap of available external outputs for FX8010 (see bellow)
535 seq_ports - allocated sequencer ports (4 by default)
536 max_synth_voices - limit of voices used for wavetable (64 by default)
537 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
538 given in MB unit. Default value is 128.
539 enable_ir - enable IR
541 This module supports multiple cards and autoprobe.
543 Input & Output configurations [extin/extout]
544 * Creative Card wo/Digital out [0x0003/0x1f03]
545 * Creative Card w/Digital out [0x0003/0x1f0f]
546 * Creative Card w/Digital CD in [0x000f/0x1f0f]
547 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
548 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
549 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
550 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
551 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
552 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
553 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
554 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
555 * Creative Card all ins and outs [0x3fff/0x7fff]
557 The power-management is supported.
562 Module for Creative Emu10k1X (SB Live Dell OEM version)
564 This module supports multiple cards.
569 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
570 * SoundBlaster PCI 64
571 * SoundBlaster PCI 128
573 joystick - Enable joystick (default off)
575 This module supports multiple cards and autoprobe.
577 The power-management is supported.
582 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
583 * SoundBlaster PCI 64
584 * SoundBlaster PCI 128
585 * SoundBlaster Vibra PCI
587 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
588 0 = disable (default), 1 = auto-detect
590 This module supports multiple cards and autoprobe.
592 The power-management is supported.
597 Module for sound cards based on ESS ES968 chip (PnP only).
599 This module supports multiple cards, PnP and autoprobe.
601 The power-management is supported.
606 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
608 port - port # for ES-1688 chip (0x220,0x240,0x260)
609 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
610 irq - IRQ # for ES-1688 chip (5,7,9,10)
611 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
612 dma8 - DMA # for ES-1688 chip (0,1,3)
614 This module supports multiple cards and autoprobe (without MPU-401 port).
619 Module for ESS AudioDrive ES-18xx sound cards.
621 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
623 with isapnp=0, the following options are available:
625 port - port # for ES-18xx chip (0x220,0x240,0x260)
626 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
627 fm_port - port # for FM (optional, not used)
628 irq - IRQ # for ES-18xx chip (5,7,9,10)
629 dma1 - first DMA # for ES-18xx chip (0,1,3)
630 dma2 - first DMA # for ES-18xx chip (0,1,3)
632 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
633 port if native ISA PnP routines are not used).
634 When dma2 is equal with dma1, the driver works as half-duplex.
636 The power-management is supported.
641 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
643 This module supports multiple cards and autoprobe.
645 The power-management is supported.
650 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
652 total_bufsize - total buffer size in kB (1-4096kB)
653 pcm_substreams_p - playback channels (1-8, default=2)
654 pcm_substreams_c - capture channels (1-8, default=0)
655 clock - clock (0 = auto-detection)
656 use_pm - support the power-management (0 = off, 1 = on,
658 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
659 joystick - enable joystick (default off)
661 This module supports multiple cards and autoprobe.
663 The power-management is supported.
668 Module for ForteMedia FM801 based PCI sound cards.
670 tea575x_tuner - Enable TEA575x tuner
671 - 1 = MediaForte 256-PCS
672 - 2 = MediaForte 256-PCPR
673 - 3 = MediaForte 64-PCR
674 - High 16-bits are video (radio) device number + 1
675 - example: 0x10002 (MediaForte 256-PCPR, device 1)
677 This module supports multiple cards and autoprobe.
679 The power-management is supported.
684 Module for Echoaudio Gina20
686 This module supports multiple cards.
687 The driver requires the firmware loader support on kernel.
692 Module for Echoaudio Gina24
694 This module supports multiple cards.
695 The driver requires the firmware loader support on kernel.
697 Module snd-gusclassic
698 ---------------------
700 Module for Gravis UltraSound Classic sound card.
702 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
703 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
704 dma1 - DMA # for GF1 chip (1,3,5,6,7)
705 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
706 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
707 voices - GF1 voices limit (14-32)
708 pcm_voices - reserved PCM voices
710 This module supports multiple cards and autoprobe.
712 Module snd-gusextreme
713 ---------------------
715 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
717 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
718 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
719 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
720 irq - IRQ # for ES-1688 chip (5,7,9,10)
721 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
722 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
723 dma8 - DMA # for ES-1688 chip (0,1,3)
724 dma1 - DMA # for GF1 chip (1,3,5,6,7)
725 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
726 voices - GF1 voices limit (14-32)
727 pcm_voices - reserved PCM voices
729 This module supports multiple cards and autoprobe (without MPU-401 port).
734 Module for Gravis UltraSound MAX sound card.
736 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
737 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
738 dma1 - DMA # for GF1 chip (1,3,5,6,7)
739 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
740 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
741 voices - GF1 voices limit (14-32)
742 pcm_voices - reserved PCM voices
744 This module supports multiple cards and autoprobe.
749 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8, ICH9, ICH10,
751 ATI SB450, SB600, R600, RS600, RS690, RS780, RV610, RV620,
752 RV630, RV635, RV670, RV770,
756 [Multiple options for each card instance]
757 model - force the model name
758 position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF)
759 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
760 bdl_pos_adj - Specifies the DMA IRQ timing delay in samples.
761 Passing -1 will make the driver to choose the appropriate
762 value based on the controller chip.
764 [Single (global) options]
765 single_cmd - Use single immediate commands to communicate with
766 codecs (for debugging only)
767 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
768 power_save - Automatic power-saving timtout (in second, 0 =
770 power_save_controller - Reset HD-audio controller in power-saving mode
773 This module supports multiple cards and autoprobe.
775 Each codec may have a model table for different configurations.
776 If your machine isn't listed there, the default (usually minimal)
777 configuration is set up. You can pass "model=<name>" option to
778 specify a certain model in such a case. There are different
779 models depending on the codec chip.
781 Model name Description
782 ---------- -----------
784 3stack 3-jack in back and a headphone out
785 3stack-digout 3-jack in back, a HP out and a SPDIF out
786 5stack 5-jack in back, 2-jack in front
787 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
788 6stack 6-jack in back, 2-jack in front
789 6stack-digout 6-jack with a SPDIF out
791 z71v 3-jack (HP shared SPDIF)
792 asus 3-jack (ASUS Mobo)
794 asus-dig ASUS with SPDIF out
795 asus-dig2 ASUS with SPDIF out (using GPIO2)
797 fujitsu Fujitsu Laptops (Pi1536)
799 lg LG laptop (m1 express dual)
800 lg-lw LG LW20/LW25 laptop
802 clevo Clevo laptops (m520G, m665n)
803 medion Medion Rim 2150
804 test for testing/debugging purpose, almost all controls can be
805 adjusted. Appearing only when compiled with
807 auto auto-config reading BIOS (default)
811 hp-3013 HP machines (3013-variant)
813 fujitsu Fujitsu S7020
815 will Will laptops (PB V7900)
816 replacer Replacer 672V
817 basic fixed pin assignment (old default model)
818 test for testing/debugging purpose, almost all controls can
819 adjusted. Appearing only when compiled with
821 auto auto-config reading BIOS (default)
824 fujitsu Fujitsu Laptop
825 hp-bpc HP xw4400/6400/8400/9400 laptops
826 hp-bpc-d7000 HP BPC D7000
827 hp-tc-t5735 HP Thin Client T5735
831 hippo Hippo (ATI) with jack detection, Sony UX-90s
832 hippo_1 Hippo (Benq) with jack detection
833 sony-assamd Sony ASSAMD
834 toshiba-s06 Toshiba S06
835 toshiba-rx1 Toshiba RX1
836 ultra Samsung Q1 Ultra Vista model
837 lenovo-3000 Lenovo 3000 y410
839 basic fixed pin assignment w/o SPDIF
840 auto auto-config reading BIOS (default)
843 quanta-il1 Quanta IL1 mini-notebook
847 acer-aspire Acer Aspire One
848 dell Dell OEM laptops (Vostro 1200)
850 test for testing/debugging purpose, almost all controls can
851 adjusted. Appearing only when compiled with
853 auto auto-config reading BIOS (default)
858 eeepc-p703 ASUS Eeepc P703 P900A
859 eeepc-p901 ASUS Eeepc P901 S101
862 3stack-dig 3-stack (2-channel) with SPDIF
863 3stack-6ch 3-stack (6-channel)
864 3stack-6ch-dig 3-stack (6-channel) with SPDIF
865 6stack-dig 6-stack with SPDIF
866 lenovo-101e Lenovo laptop
867 eeepc-p701 ASUS Eeepc P701
868 eeepc-ep20 ASUS Eeepc EP20
880 auto auto-config reading BIOS (default)
883 3stack-dig 3-jack with SPDIF I/O
884 6stack-dig 6-jack digital with SPDIF I/O
886 targa Targa T8, MSI-1049 T8
889 macpro MacPro support
890 mbp3 Macbook Pro rev3
891 imac24 iMac 24'' with jack detection
893 auto auto-config reading BIOS (default)
896 3stack-dig 3-jack with SPDIF I/O
897 6stack-dig 6-jack digital with SPDIF I/O
898 3stack-6ch 3-jack 6-channel
899 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
900 6stack-dig-demo 6-jack digital for Intel demo board
901 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
902 acer-aspire Acer Aspire 9810
903 medion Medion Laptops
904 medion-md2 Medion MD2
906 targa-2ch-dig Targs/MSI with 2-channel
907 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
908 lenovo-101e Lenovo 101E
909 lenovo-nb0763 Lenovo NB0763
910 lenovo-ms7195-dig Lenovo MS7195
911 lenovo-sky Lenovo Sky
913 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
914 6stack-dell Dell machines with 6stack (Inspiron 530)
916 clevo-m720 Clevo M720 laptop series
917 fujitsu-pi2515 Fujitsu AMILO Pi2515
918 3stack-6ch-intel Intel DG33* boards
919 auto auto-config reading BIOS (default)
923 3stack-dig 3-jack with SPDIF I/O
924 6stack-dig 6-jack with SPDIF I/O
925 3stack-660 3-jack (for ALC660)
926 uniwill-m31 Uniwill M31 laptop
927 toshiba Toshiba laptop support
928 asus Asus laptop support
929 asus-laptop ASUS F2/F3 laptops
930 auto auto-config reading BIOS (default)
934 3stack-dig 3-jack with SPDIF OUT
935 6stack-dig 6-jack with SPDIF OUT
936 3stack-660 3-jack (for ALC660VD)
937 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
938 lenovo Lenovo 3000 C200
939 dallas Dallas laptops
941 auto auto-config reading BIOS (default)
944 minimal 3-jack in back
945 min_fp 3-jack in back, 2-jack in front
946 full 6-jack in back, 2-jack in front
947 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
948 allout 5-jack in back, 2-jack in front, SPDIF out
949 auto auto-config reading BIOS (default)
952 3stack 3-stack mode (default)
955 AD1884A / AD1883 / AD1984A / AD1984B
956 desktop 3-stack desktop (default)
957 laptop laptop with HP jack sensing
958 mobile mobile devices with HP jack sensing
959 thinkpad Lenovo Thinkpad X300
965 basic 3-jack (default)
967 thinkpad Lenovo Thinkpad T60/X60/Z60
974 basic default configuration
975 thinkpad Lenovo Thinkpad T61/X61
979 6stack 6-jack, separate surrounds (default)
980 3stack 3-stack, shared surrounds
981 laptop 2-channel only (FSC V2060, Samsung M50)
982 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
983 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
984 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
986 AD1988/AD1988B/AD1989A/AD1989B
988 6stack-dig ditto with SPDIF
990 3stack-dig ditto with SPDIF
991 laptop 3-jack with hp-jack automute
992 laptop-dig ditto with SPDIF
993 auto auto-config reading BIOS (default)
996 laptop-hpsense Laptop with HP sense (old model laptop)
997 laptop-micsense Laptop with Mic sense (old model fujitsu)
998 laptop-hpmicsense Laptop with HP and Mic senses
1000 test for testing/debugging purpose, almost all controls
1001 can be adjusted. Appearing only when compiled with
1005 laptop Basic Laptop config
1006 laptop-hp Laptop config for some HP models (subdevice 30A5)
1007 laptop-eapd Laptop config with EAPD support
1008 test for testing/debugging purpose, almost all controls
1009 can be adjusted. Appearing only when compiled with
1013 laptop Basic Laptop config (default)
1014 hp HP Spartan laptop
1018 dell-d21 Dell (unknown)
1019 dell-d22 Dell (unknown)
1020 dell-d23 Dell (unknown)
1021 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
1022 dell-m22 Dell Latitude D620, Dell Latitude D820
1023 dell-m23 Dell XPS M1710, Dell Precision M90
1024 dell-m24 Dell Latitude 120L
1025 dell-m25 Dell Inspiron E1505n
1026 dell-m26 Dell Inspiron 1501
1027 dell-m27 Dell Inspiron E1705/9400
1028 gateway Gateway laptops with EAPD control
1029 panasonic Panasonic CF-74
1033 dell-m42 Dell (unknown)
1034 dell-m43 Dell Precision
1035 dell-m44 Dell Inspiron
1040 5stack D945 5stack + SPDIF
1041 intel-mac-v1 Intel Mac Type 1
1042 intel-mac-v2 Intel Mac Type 2
1043 intel-mac-v3 Intel Mac Type 3
1044 intel-mac-v4 Intel Mac Type 4
1045 intel-mac-v5 Intel Mac Type 5
1046 intel-mac-auto Intel Mac (detect type according to subsystem id)
1047 macmini Intel Mac Mini (equivalent with type 3)
1048 macbook Intel Mac Book (eq. type 5)
1049 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1050 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1051 imac-intel Intel iMac (eq. type 2)
1052 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1053 dell-d81 Dell (unknown)
1054 dell-d82 Dell (unknown)
1055 dell-m81 Dell (unknown)
1056 dell-m82 Dell XPS M1210
1059 ref Reference board, base config
1060 m2-2 Some Gateway MX series laptops
1061 m6 Some Gateway NX series laptops
1062 pa6 Gateway NX860 series
1064 STAC9227/9228/9229/927x
1067 5stack D965 5stack + SPDIF
1068 dell-3stack Dell Dimension E520
1069 dell-bios Fixes with Dell BIOS setup
1073 dell-m4-1 Dell desktops
1074 dell-m4-2 Dell desktops
1078 dell-m6 Dell desktops
1081 vaio Setup for VAIO FE550G/SZ110
1082 vaio-ar Setup for VAIO AR
1084 The model name "genric" is treated as a special case. When this
1085 model is given, the driver uses the generic codec parser without
1086 "codec-patch". It's sometimes good for testing and debugging.
1088 If the default configuration doesn't work and one of the above
1089 matches with your device, report it together with the PCI
1090 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1091 ML (see the section "Links and Addresses").
1093 power_save and power_save_controller options are for power-saving
1094 mode. See powersave.txt for details.
1096 Note 2: If you get click noises on output, try the module option
1097 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1098 register value without FIFO size correction as the current
1099 DMA pointer. position_fix=2 will make the driver to use
1100 the position buffer instead of reading SD_LPIB register.
1101 (Usually SD_LPIB register is more accurate than the
1104 NB: If you get many "azx_get_response timeout" messages at
1105 loading, it's likely a problem of interrupts (e.g. ACPI irq
1106 routing). Try to boot with options like "pci=noacpi". Also, you
1107 can try "single_cmd=1" module option. This will switch the
1108 communication method between HDA controller and codecs to the
1109 single immediate commands instead of CORB/RIRB. Basically, the
1110 single command mode is provided only for BIOS, and you won't get
1111 unsolicited events, too. But, at least, this works independently
1112 from the irq. Remember this is a last resort, and should be
1113 avoided as much as possible...
1115 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1116 On some hardwares, you may need to add a proper probe_mask option
1117 to avoid the "azx_get_response timeout" problem above, instead.
1118 This occurs when the access to non-existing or non-working codec slot
1119 (likely a modem one) causes a stall of the communication via HD-audio
1120 bus. You can see which codec slots are probed by enabling
1121 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1122 proc files. Then limit the slots to probe by probe_mask option.
1123 For example, probe_mask=1 means to probe only the first slot, and
1124 probe_mask=4 means only the third slot.
1126 The power-management is supported.
1131 Module for RME Hammerfall DSP audio interface(s)
1133 This module supports multiple cards.
1135 Note: The firmware data can be automatically loaded via hotplug
1136 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1137 the firmware via hdsploader utility included in alsa-tools
1139 The firmware data is found in alsa-firmware package.
1141 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1142 module did formerly. It will allocate the buffers in advance
1143 when any HDSP cards are found. To make the buffer
1144 allocation sure, load snd-page-alloc module in the early
1145 stage of boot sequence. See "Early Buffer Allocation"
1151 Module for RME HDSP MADI board.
1153 precise_ptr - Enable precise pointer, or disable.
1154 line_outs_monitor - Send playback streams to analog outs by default.
1155 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1157 See hdspm.txt for details.
1162 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1164 This module supports autoprobe and multiple cards.
1169 Module for Envy24 (ICE1712) based PCI sound cards.
1170 * MidiMan M Audio Delta 1010
1171 * MidiMan M Audio Delta 1010LT
1172 * MidiMan M Audio Delta DiO 2496
1173 * MidiMan M Audio Delta 66
1174 * MidiMan M Audio Delta 44
1175 * MidiMan M Audio Delta 410
1176 * MidiMan M Audio Audiophile 2496
1179 * TerraTec EWX 24/96
1180 * TerraTec DMX 6Fire
1182 * Hoontech SoundTrack DSP 24
1183 * Hoontech SoundTrack DSP 24 Value
1184 * Hoontech SoundTrack DSP 24 Media 7.1
1185 * Event Electronics, EZ8
1187 * Lionstracs, Mediastaton
1190 model - Use the given board model, one of the following:
1191 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1192 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1193 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1194 phase88, mediastation
1195 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1196 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1197 in msec resolution, default value is 500 (0.5 sec)
1199 This module supports multiple cards and autoprobe. Note: The consumer part
1200 is not used with all Envy24 based cards (for example in the MidiMan Delta
1203 Note: The supported board is detected by reading EEPROM or PCI
1204 SSID (if EEPROM isn't available). You can override the
1205 model by passing "model" module option in case that the
1206 driver isn't configured properly or you want to try another
1212 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1213 * MidiMan M Audio Revolution 5.1
1214 * MidiMan M Audio Revolution 7.1
1215 * MidiMan M Audio Audiophile 192
1217 * TerraTec Aureon 5.1 Sky
1218 * TerraTec Aureon 7.1 Space
1219 * TerraTec Aureon 7.1 Universe
1222 * AudioTrak Prodigy 7.1
1223 * AudioTrak Prodigy 7.1 LT
1224 * AudioTrak Prodigy 7.1 XT
1225 * AudioTrak Prodigy 7.1 HIFI
1226 * AudioTrak Prodigy 7.1 HD2
1227 * AudioTrak Prodigy 192
1229 * Albatron K8X800 Pro II
1230 * Chaintech ZNF3-150
1231 * Chaintech ZNF3-250
1238 * Hercules Fortissimo IV
1239 * EGO-SYS WaveTerminal 192M
1241 model - Use the given board model, one of the following:
1242 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1243 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1244 juli, aureon51, aureon71, universe, ap192, k8x800,
1245 phase22, phase28, ms300, av710, se200pci, se90pci,
1246 fortissimo4, sn25p, WT192M
1248 This module supports multiple cards and autoprobe.
1250 Note: The supported board is detected by reading EEPROM or PCI
1251 SSID (if EEPROM isn't available). You can override the
1252 model by passing "model" module option in case that the
1253 driver isn't configured properly or you want to try another
1259 Module for Echoaudio Indigo
1261 This module supports multiple cards.
1262 The driver requires the firmware loader support on kernel.
1267 Module for Echoaudio Indigo DJ
1269 This module supports multiple cards.
1270 The driver requires the firmware loader support on kernel.
1275 Module for Echoaudio Indigo IO
1277 This module supports multiple cards.
1278 The driver requires the firmware loader support on kernel.
1283 Module for AC'97 motherboards from Intel and compatibles.
1284 * Intel i810/810E, i815, i820, i830, i84x, MX440
1285 ICH5, ICH6, ICH7, 6300ESB, ESB2
1286 * SiS 7012 (SiS 735)
1287 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1289 * AMD AMD768, AMD8111
1292 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1293 ac97_quirk - AC'97 workaround for strange hardware
1294 See "AC97 Quirk Option" section below.
1295 buggy_irq - Enable workaround for buggy interrupts on some
1296 motherboards (default yes on nForce chips,
1298 buggy_semaphore - Enable workaround for hardwares with buggy
1299 semaphores (e.g. on some ASUS laptops)
1301 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1302 from the controller chip
1303 (0 = off, 1 = on, -1 = default)
1305 This module supports one chip and autoprobe.
1307 Note: the latest driver supports auto-detection of chip clock.
1308 if you still encounter too fast playback, specify the clock
1309 explicitly via the module option "ac97_clock=41194".
1311 Joystick/MIDI ports are not supported by this driver. If your
1312 motherboard has these devices, use the ns558 or snd-mpu401
1313 modules, respectively.
1315 The power-management is supported.
1317 Module snd-intel8x0m
1318 --------------------
1320 Module for Intel ICH (i8x0) chipset MC97 modems.
1321 * Intel i810/810E, i815, i820, i830, i84x, MX440
1323 * SiS 7013 (SiS 735)
1324 * NVidia NForce, NForce2, NForce2s, NForce3
1328 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1330 This module supports one card and autoprobe.
1332 Note: The default index value of this module is -2, i.e. the first
1335 The power-management is supported.
1337 Module snd-interwave
1338 --------------------
1340 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1341 and other sound cards based on AMD InterWave (tm) chip.
1343 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1344 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1345 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1346 effect - 1 = InterWave effects enable (default 0);
1348 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1350 with isapnp=0, the following options are available:
1352 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1353 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1354 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1355 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1357 This module supports multiple cards, autoprobe and ISA PnP.
1359 Module snd-interwave-stb
1360 ------------------------
1362 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1363 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1364 circuit for extended control of bass, treble and master volume.
1366 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1367 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1368 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1369 effect - 1 = InterWave effects enable (default 0);
1371 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1373 with isapnp=0, the following options are available:
1375 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1376 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1377 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1378 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1379 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1381 This module supports multiple cards, autoprobe and ISA PnP.
1386 Module for Korg 1212 IO PCI card
1388 This module supports multiple cards.
1393 Module for Echoaudio Layla20
1395 This module supports multiple cards.
1396 The driver requires the firmware loader support on kernel.
1401 Module for Echoaudio Layla24
1403 This module supports multiple cards.
1404 The driver requires the firmware loader support on kernel.
1409 Module for Allegro/Maestro3 chips
1411 external_amp - enable external amp (enabled by default)
1412 amp_gpio - GPIO pin number for external amp (0-15) or
1413 -1 for default pin (8 for allegro, 1 for
1416 This module supports autoprobe and multiple chips.
1418 Note: the binding of amplifier is dependent on hardware.
1419 If there is no sound even though all channels are unmuted, try to
1420 specify other gpio connection via amp_gpio option.
1421 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1424 The power-management is supported.
1429 Module for Echoaudio Mia
1431 This module supports multiple cards.
1432 The driver requires the firmware loader support on kernel.
1437 Module for Miro soundcards: miroSOUND PCM 1 pro,
1439 miroSOUND PCM 20 Radio.
1441 port - Port # (0x530,0x604,0xe80,0xf40)
1442 irq - IRQ # (5,7,9,10,11)
1443 dma1 - 1st dma # (0,1,3)
1444 dma2 - 2nd dma # (0,1)
1445 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1446 mpu_irq - MPU-401 irq # (5,7,9,10)
1447 fm_port - FM Port # (0x388)
1448 wss - enable WSS mode
1449 ide - enable onboard ide support
1454 Module for Digigram miXart8 sound cards.
1456 This module supports multiple cards.
1457 Note: One miXart8 board will be represented as 4 alsa cards.
1458 See MIXART.txt for details.
1460 When the driver is compiled as a module and the hotplug firmware
1461 is supported, the firmware data is loaded via hotplug automatically.
1462 Install the necessary firmware files in alsa-firmware package.
1463 When no hotplug fw loader is available, you need to load the
1464 firmware via mixartloader utility in alsa-tools package.
1469 Module for Echoaudio Mona
1471 This module supports multiple cards.
1472 The driver requires the firmware loader support on kernel.
1477 Module for MPU-401 UART devices.
1479 port - port number or -1 (disable)
1480 irq - IRQ number or -1 (disable)
1481 pnp - PnP detection - 0 = disable, 1 = enable (default)
1483 This module supports multiple devices and PnP.
1488 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1491 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1492 irq - IRQ # for MTPAV (7,5, default=7)
1493 hwports - number of supported hardware ports, default=8.
1495 Module supports only 1 card. This module has no enable option.
1500 Module for Ego Systems (ESI) Miditerminal 4140
1502 This module supports multiple devices.
1503 Requires parport (CONFIG_PARPORT).
1508 Module for NeoMagic NM256AV/ZX chips
1510 playback_bufsize - max playback frame size in kB (4-128kB)
1511 capture_bufsize - max capture frame size in kB (4-128kB)
1512 force_ac97 - 0 or 1 (disabled by default)
1513 buffer_top - specify buffer top address
1514 use_cache - 0 or 1 (disabled by default)
1515 vaio_hack - alias buffer_top=0x25a800
1516 reset_workaround - enable AC97 RESET workaround for some laptops
1517 reset_workaround2 - enable extended AC97 RESET workaround for some
1520 This module supports one chip and autoprobe.
1522 The power-management is supported.
1524 Note: on some notebooks the buffer address cannot be detected
1525 automatically, or causes hang-up during initialization.
1526 In such a case, specify the buffer top address explicitly via
1527 the buffer_top option.
1529 Sony F250: buffer_top=0x25a800
1530 Sony F270: buffer_top=0x272800
1531 The driver supports only ac97 codec. It's possible to force
1532 to initialize/use ac97 although it's not detected. In such a
1533 case, use force_ac97=1 option - but *NO* guarantee whether it
1536 Note: The NM256 chip can be linked internally with non-AC97
1537 codecs. This driver supports only the AC97 codec, and won't work
1538 with machines with other (most likely CS423x or OPL3SAx) chips,
1539 even though the device is detected in lspci. In such a case, try
1540 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1541 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1542 and proper hardware parameters in the case without ISA PnP.
1544 Note: some laptops need a workaround for AC97 RESET. For the
1545 known hardware like Dell Latitude LS and Sony PCG-F305, this
1546 workaround is enabled automatically. For other laptops with a
1547 hard freeze, you can try reset_workaround=1 option.
1549 Note: Dell Latitude CSx laptops have another problem regarding
1550 AC97 RESET. On these laptops, reset_workaround2 option is
1551 turned on as default. This option is worth to try if the
1552 previous reset_workaround option doesn't help.
1554 Note: This driver is really crappy. It's a porting from the
1555 OSS driver, which is a result of black-magic reverse engineering.
1556 The detection of codec will fail if the driver is loaded *after*
1557 X-server as described above. You might be able to force to load
1558 the module, but it may result in hang-up. Hence, make sure that
1559 you load this module *before* X if you encounter this kind of
1565 Module for Yamaha OPL3-SA2/SA3 sound cards.
1567 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1569 with isapnp=0, the following options are available:
1571 port - control port # for OPL3-SA chip (0x370)
1572 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1573 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1574 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1575 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1576 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1577 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1578 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1580 This module supports multiple cards and ISA PnP. It does not support
1581 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1583 The power-management is supported.
1585 Module snd-opti92x-ad1848
1586 -------------------------
1588 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1589 Module works with OAK Mozart cards as well.
1591 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1593 with isapnp=0, the following options are available:
1595 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1596 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1597 fm_port - port # for OPL3 device (0x388)
1598 irq - IRQ # for WSS chip (5,7,9,10,11)
1599 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1600 dma1 - first DMA # for WSS chip (0,1,3)
1602 This module supports only one card, autoprobe and PnP.
1604 Module snd-opti92x-cs4231
1605 -------------------------
1607 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1609 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1611 with isapnp=0, the following options are available:
1613 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1614 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1615 fm_port - port # for OPL3 device (0x388)
1616 irq - IRQ # for WSS chip (5,7,9,10,11)
1617 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1618 dma1 - first DMA # for WSS chip (0,1,3)
1619 dma2 - second DMA # for WSS chip (0,1,3)
1621 This module supports only one card, autoprobe and PnP.
1626 Module for sound cards based on OPTi 82c93x chips.
1628 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1630 with isapnp=0, the following options are available:
1632 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1633 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1634 fm_port - port # for OPL3 device (0x388)
1635 irq - IRQ # for WSS chip (5,7,9,10,11)
1636 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1637 dma1 - first DMA # for WSS chip (0,1,3)
1638 dma2 - second DMA # for WSS chip (0,1,3)
1640 This module supports only one card, autoprobe and PnP.
1645 Module for sound cards based on the C-Media CMI8788 chip:
1647 * AuzenTech X-Meridian
1649 * Club3D Theatron DTS
1651 * Razer Barracuda AC-1
1654 This module supports autoprobe and multiple cards.
1659 Module for internal PC-Speaker.
1661 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1663 This module supports system beeps, some kind of PCM playback and
1664 even a few mixer controls.
1669 Module for Digigram PCXHR boards
1671 This module supports multiple cards.
1673 Module snd-portman2x4
1674 ---------------------
1676 Module for Midiman Portman 2x4 parallel port MIDI interface
1678 This module supports multiple cards.
1680 Module snd-powermac (on ppc only)
1681 ---------------------------------
1683 Module for PowerMac, iMac and iBook on-board soundchips
1685 enable_beep - enable beep using PCM (enabled as default)
1687 Module supports autoprobe a chip.
1689 Note: the driver may have problems regarding endianess.
1691 The power-management is supported.
1693 Module snd-pxa2xx-ac97 (on arm only)
1694 ------------------------------------
1696 Module for AC97 driver for the Intel PXA2xx chip
1698 For ARM architecture only.
1700 The power-management is supported.
1705 Module for Conexant Riptide chip
1707 joystick_port - Joystick port # (default: 0x200)
1708 mpu_port - MPU401 port # (default: 0x330)
1709 opl3_port - OPL3 port # (default: 0x388)
1711 This module supports multiple cards.
1712 The driver requires the firmware loader support on kernel.
1713 You need to install the firmware file "riptide.hex" to the standard
1714 firmware path (e.g. /lib/firmware).
1719 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1720 Prodif96 and Prodif Gold) sound cards.
1722 This module supports multiple cards.
1727 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1729 This module supports multiple cards.
1734 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1736 precise_ptr - Enable precise pointer (doesn't work reliably).
1739 This module supports multiple cards.
1741 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1742 module did formerly. It will allocate the buffers in advance
1743 when any RME9652 cards are found. To make the buffer
1744 allocation sure, load snd-page-alloc module in the early
1745 stage of boot sequence. See "Early Buffer Allocation"
1748 Module snd-sa11xx-uda1341 (on arm only)
1749 ---------------------------------------
1751 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1753 Module supports only one card.
1754 Module has no enable and index options.
1756 The power-management is supported.
1761 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1765 port - port # for SB DSP chip (0x220,0x240,0x260)
1766 irq - IRQ # for SB DSP chip (5,7,9,10)
1767 dma8 - DMA # for SB DSP chip (1,3)
1769 This module supports multiple cards and autoprobe.
1771 The power-management is supported.
1773 Module snd-sb16 and snd-sbawe
1774 -----------------------------
1776 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1777 SoundBlaster AWE 32 (PnP),
1778 SoundBlaster AWE 64 PnP
1780 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1781 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1782 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1784 with isapnp=0, the following options are available:
1786 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1787 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1788 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1789 (snd-sbawe module only)
1790 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1791 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1792 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1794 This module supports multiple cards, autoprobe and ISA PnP.
1796 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1797 disable 16bit DMA with dma16 = -1 module parameter.
1798 Also, all Sound Blaster 16 type cards can operate in 16-bit
1799 half duplex mode through 8-bit DMA channel by disabling their
1802 The power-management is supported.
1807 Module for Gallant SC-6000 soundcard.
1809 port - Port # (0x220 or 0x240)
1810 mss_port - MSS Port # (0x530 or 0xe80)
1811 irq - IRQ # (5,7,9,10,11)
1812 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1815 This module supports multiple cards.
1817 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1822 Module for Aztech Sound Galaxy sound card.
1824 sbport - Port # for SB16 interface (0x220,0x240)
1825 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1826 irq - IRQ # (7,9,10,11)
1829 This module supports multiple cards.
1831 The power-management is supported.
1836 Module for ENSONIQ SoundScape PnP cards.
1838 port - Port # (PnP setup)
1839 wss_port - WSS Port # (PnP setup)
1840 irq - IRQ # (PnP setup)
1841 mpu_irq - MPU-401 IRQ # (PnP setup)
1842 dma - DMA # (PnP setup)
1843 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1845 This module supports multiple cards. ISA PnP must be enabled.
1846 You need sscape_ctl tool in alsa-tools package for loading
1849 Module snd-sun-amd7930 (on sparc only)
1850 --------------------------------------
1852 Module for AMD7930 sound chips found on Sparcs.
1854 This module supports multiple cards.
1856 Module snd-sun-cs4231 (on sparc only)
1857 -------------------------------------
1859 Module for CS4231 sound chips found on Sparcs.
1861 This module supports multiple cards.
1863 Module snd-sun-dbri (on sparc only)
1864 -----------------------------------
1866 Module for DBRI sound chips found on Sparcs.
1868 This module supports multiple cards.
1870 Module snd-wavefront
1871 --------------------
1873 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1875 use_cs4232_midi - Use CS4232 MPU-401 interface
1876 (inaccessibly located inside your computer)
1877 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1879 with isapnp=0, the following options are available:
1881 cs4232_pcm_port - Port # for CS4232 PCM interface.
1882 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1883 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1884 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1885 ics2115_port - Port # for ICS2115
1886 ics2115_irq - IRQ # for ICS2115
1887 fm_port - FM OPL-3 Port #
1888 dma1 - DMA1 # for CS4232 PCM interface.
1889 dma2 - DMA2 # for CS4232 PCM interface.
1891 The below are options for wavefront_synth features:
1892 wf_raw - Assume that we need to boot the OS (default:no)
1893 If yes, then during driver loading, the state of the board is
1894 ignored, and we reset the board and load the firmware anyway.
1895 fx_raw - Assume that the FX process needs help (default:yes)
1896 If false, we'll leave the FX processor in whatever state it is
1897 when the driver is loaded. The default is to download the
1898 microprogram and associated coefficients to set it up for
1899 "default" operation, whatever that means.
1900 debug_default - Debug parameters for card initialization
1901 wait_usecs - How long to wait without sleeping, usecs
1903 This magic number seems to give pretty optimal throughput
1904 based on my limited experimentation.
1905 If you want to play around with it and find a better value, be
1906 my guest. Remember, the idea is to get a number that causes us
1907 to just busy wait for as many WaveFront commands as possible,
1908 without coming up with a number so large that we hog the whole
1910 Specifically, with this number, out of about 134,000 status
1911 waits, only about 250 result in a sleep.
1912 sleep_interval - How long to sleep when waiting for reply
1914 sleep_tries - How many times to try sleeping during a wait
1916 ospath - Pathname to processed ICS2115 OS firmware
1917 (default:wavefront.os)
1918 The path name of the ISC2115 OS firmware. In the recent
1919 version, it's handled via firmware loader framework, so it
1920 must be installed in the proper path, typically,
1922 reset_time - How long to wait for a reset to take effect
1924 ramcheck_time - How many seconds to wait for the RAM test
1926 osrun_time - How many seconds to wait for the ICS2115 OS
1929 This module supports multiple cards and ISA PnP.
1931 Note: the firmware file "wavefront.os" was located in the earlier
1932 version in /etc. Now it's loaded via firmware loader, and
1933 must be in the proper firmware path, such as /lib/firmware.
1934 Copy (or symlink) the file appropriately if you get an error
1935 regarding firmware downloading after upgrading the kernel.
1937 Module snd-sonicvibes
1938 ---------------------
1940 Module for S3 SonicVibes PCI sound cards.
1941 * PINE Schubert 32 PCI
1943 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1944 - SoundCard must have onboard SRAM for this.
1945 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1947 This module supports multiple cards and autoprobe.
1949 Module snd-serial-u16550
1950 ------------------------
1952 Module for UART16550A serial MIDI ports.
1954 port - port # for UART16550A chip
1955 irq - IRQ # for UART16550A chip, -1 = poll mode
1956 speed - speed in bauds (9600,19200,38400,57600,115200)
1958 base - base for divisor in bauds (57600,115200,230400,460800)
1960 outs - number of MIDI ports in a serial port (1-4)
1962 adaptor - Type of adaptor.
1963 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1964 3 = MS-124W M/B, 4 = Generic
1966 This module supports multiple cards. This module does not support autoprobe
1967 thus the main port must be specified!!! Other options are optional.
1972 Module for Trident 4DWave DX/NX sound cards.
1973 * Best Union Miss Melody 4DWave PCI
1975 * Warpspeed ONSpeed 4DWave PCI
1978 * CHIC True Sound 4Dwave
1979 * Shark Predator4D-PCI
1980 * Jaton SonicWave 4D
1981 * SiS SI7018 PCI Audio
1982 * Hoontech SoundTrack Digital 4DWave NX
1984 pcm_channels - max channels (voices) reserved for PCM
1985 wavetable_size - max wavetable size in kB (4-?kb)
1987 This module supports multiple cards and autoprobe.
1989 The power-management is supported.
1991 Module snd-usb-audio
1992 --------------------
1994 Module for USB audio and USB MIDI devices.
1996 vid - Vendor ID for the device (optional)
1997 pid - Product ID for the device (optional)
1998 nrpacks - Max. number of packets per URB (default: 8)
1999 async_unlink - Use async unlink mode (default: yes)
2000 device_setup - Device specific magic number (optional)
2001 - Influence depends on the device
2003 ignore_ctl_error - Ignore any USB-controller regarding mixer
2004 interface (default: no)
2006 This module supports multiple devices, autoprobe and hotplugging.
2008 NB: nrpacks parameter can be modified dynamically via sysfs.
2009 Don't put the value over 20. Changing via sysfs has no sanity
2011 NB: async_unlink=0 would cause Oops. It remains just for
2012 debugging purpose (if any).
2013 NB: ignore_ctl_error=1 may help when you get an error at accessing
2014 the mixer element such as URB error -22. This happens on some
2015 buggy USB device or the controller.
2017 Module snd-usb-caiaq
2018 --------------------
2020 Module for caiaq UB audio interfaces,
2021 * Native Instruments RigKontrol2
2022 * Native Instruments Kore Controller
2023 * Native Instruments Audio Kontrol 1
2024 * Native Instruments Audio 8 DJ
2026 This module supports multiple devices, autoprobe and hotplugging.
2028 Module snd-usb-usx2y
2029 --------------------
2031 Module for Tascam USB US-122, US-224 and US-428 devices.
2033 This module supports multiple devices, autoprobe and hotplugging.
2035 Note: you need to load the firmware via usx2yloader utility included
2036 in alsa-tools and alsa-firmware packages.
2041 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2042 8233A, 8233C, 8235, 8237 (south) bridge.
2044 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2046 joystick - Enable joystick (default off) [VIA686A/686B only]
2047 ac97_clock - AC'97 codec clock base (default 48000Hz)
2048 dxs_support - support DXS channels,
2049 0 = auto (default), 1 = enable, 2 = disable,
2050 3 = 48k only, 4 = no VRA, 5 = enable any sample
2051 rate and different sample rates on different
2053 [VIA8233/C, 8235, 8237 only]
2054 ac97_quirk - AC'97 workaround for strange hardware
2055 See "AC97 Quirk Option" section below.
2057 This module supports one chip and autoprobe.
2059 Note: on some SMP motherboards like MSI 694D the interrupts might
2060 not be generated properly. In such a case, please try to
2061 set the SMP (or MPS) version on BIOS to 1.1 instead of
2062 default value 1.4. Then the interrupt number will be
2063 assigned under 15. You might also upgrade your BIOS.
2065 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2066 channels as the first PCM. On these channels, up to 4
2067 streams can be played at the same time, and the controller
2068 can perform sample rate conversion with separate rates for
2070 As default (dxs_support = 0), 48k fixed rate is chosen
2071 except for the known devices since the output is often
2072 noisy except for 48k on some mother boards due to the
2074 Please try once dxs_support=5 and if it works on other
2075 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2076 know the PCI subsystem vendor/device id's (output of
2078 If dxs_support=5 does not work, try dxs_support=4; if it
2079 doesn't work too, try dxs_support=1. (dxs_support=1 is
2080 usually for old motherboards. The correct implemented
2081 board should work with 4 or 5.) If it still doesn't
2082 work and the default setting is ok, dxs_support=3 is the
2083 right choice. If the default setting doesn't work at all,
2084 try dxs_support=2 to disable the DXS channels.
2085 In any cases, please let us know the result and the
2086 subsystem vendor/device ids. See "Links and Addresses"
2089 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2090 additionally. The mpu_port option is for VIA686 chips only.
2092 The power-management is supported.
2094 Module snd-via82xx-modem
2095 ------------------------
2097 Module for VIA82xx AC97 modem
2099 ac97_clock - AC'97 codec clock base (default 48000Hz)
2101 This module supports one card and autoprobe.
2103 Note: The default index value of this module is -2, i.e. the first
2106 The power-management is supported.
2111 Module for virtual rawmidi devices.
2112 This module creates virtual rawmidi devices which communicate
2113 to the corresponding ALSA sequencer ports.
2115 midi_devs - MIDI devices # (1-4, default=4)
2117 This module supports multiple cards.
2122 Module for sound cards based on the Asus AV100/AV200 chips,
2123 i.e., Xonar D1, DX, D2, D2X and HDAV1.3 (Deluxe).
2125 This module supports autoprobe and multiple cards.
2130 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2132 mic - Enable Microphone on V222 Mic (NYI)
2133 ibl - Capture IBL size. (default = 0, minimum size)
2135 This module supports multiple cards.
2137 When the driver is compiled as a module and the hotplug firmware
2138 is supported, the firmware data is loaded via hotplug automatically.
2139 Install the necessary firmware files in alsa-firmware package.
2140 When no hotplug fw loader is available, you need to load the
2141 firmware via vxloader utility in alsa-tools package. To invoke
2142 vxloader automatically, add the following to /etc/modprobe.conf
2144 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2146 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2147 /etc/modules.conf, instead.)
2148 IBL size defines the interrupts period for PCM. The smaller size
2149 gives smaller latency but leads to more CPU consumption, too.
2150 The size is usually aligned to 126. As default (=0), the smallest
2151 size is chosen. The possible IBL values can be found in
2152 /proc/asound/cardX/vx-status proc file.
2154 The power-management is supported.
2159 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2161 ibl - Capture IBL size. (default = 0, minimum size)
2163 This module supports multiple cards. The module is compiled only when
2164 PCMCIA is supported on kernel.
2166 With the older 2.6.x kernel, to activate the driver via the card
2167 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2168 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2169 longer require a config file.
2171 When the driver is compiled as a module and the hotplug firmware
2172 is supported, the firmware data is loaded via hotplug automatically.
2173 Install the necessary firmware files in alsa-firmware package.
2174 When no hotplug fw loader is available, you need to load the
2175 firmware via vxloader utility in alsa-tools package.
2177 About capture IBL, see the description of snd-vx222 module.
2179 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2182 The power-management is supported.
2187 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2189 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2190 1 (auto-detect for YMF744/754 only)
2191 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2192 1 (auto-detect for YMF744/754 only)
2193 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2195 rear_switch - enable shared rear/line-in switch (bool)
2197 This module supports autoprobe and multiple chips.
2199 The power-management is supported.
2201 Module snd-pdaudiocf
2202 --------------------
2204 Module for Sound Core PDAudioCF sound card.
2206 The power-management is supported.
2212 The ac97_quirk option is used to enable/override the workaround for
2213 specific devices on drivers for on-board AC'97 controllers like
2214 snd-intel8x0. Some hardware have swapped output pins between Master
2215 and Headphone, or Surround (thanks to confusion of AC'97
2216 specifications from version to version :-)
2218 The driver provides the auto-detection of known problematic devices,
2219 but some might be unknown or wrongly detected. In such a case, pass
2220 the proper value with this option.
2222 The following strings are accepted:
2223 - default Don't override the default setting
2224 - none Disable the quirk
2225 - hp_only Bind Master and Headphone controls as a single control
2226 - swap_hp Swap headphone and master controls
2227 - swap_surround Swap master and surround controls
2228 - ad_sharing For AD1985, turn on OMS bit and use headphone
2229 - alc_jack For ALC65x, turn on the jack sense mode
2230 - inv_eapd Inverted EAPD implementation
2231 - mute_led Bind EAPD bit for turning on/off mute LED
2233 For backward compatibility, the corresponding integer value -1, 0,
2234 ... are accepted, too.
2236 For example, if "Master" volume control has no effect on your device
2237 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2240 Configuring Non-ISAPNP Cards
2241 ============================
2243 When the kernel is configured with ISA-PnP support, the modules
2244 supporting the isapnp cards will have module options "isapnp".
2245 If this option is set, *only* the ISA-PnP devices will be probed.
2246 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2247 together with the proper i/o and irq configuration.
2249 When the kernel is configured without ISA-PnP support, isapnp option
2250 will be not built in.
2253 Module Autoloading Support
2254 ==========================
2256 The ALSA drivers can be loaded automatically on demand by defining
2257 module aliases. The string 'snd-card-%1' is requested for ALSA native
2258 devices where %i is sound card number from zero to seven.
2260 To auto-load an ALSA driver for OSS services, define the string
2261 'sound-slot-%i' where %i means the slot number for OSS, which
2262 corresponds to the card index of ALSA. Usually, define this
2263 as the same card module.
2265 An example configuration for a single emu10k1 card is like below:
2266 ----- /etc/modprobe.conf
2267 alias snd-card-0 snd-emu10k1
2268 alias sound-slot-0 snd-emu10k1
2269 ----- /etc/modprobe.conf
2271 The available number of auto-loaded sound cards depends on the module
2272 option "cards_limit" of snd module. As default it's set to 1.
2273 To enable the auto-loading of multiple cards, specify the number of
2274 sound cards in that option.
2276 When multiple cards are available, it'd better to specify the index
2277 number for each card via module option, too, so that the order of
2278 cards is kept consistent.
2280 An example configuration for two sound cards is like below:
2282 ----- /etc/modprobe.conf
2284 options snd cards_limit=2
2285 alias snd-card-0 snd-interwave
2286 alias snd-card-1 snd-ens1371
2287 options snd-interwave index=0
2288 options snd-ens1371 index=1
2290 alias sound-slot-0 snd-interwave
2291 alias sound-slot-1 snd-ens1371
2292 ----- /etc/modprobe.conf
2294 In this example, the interwave card is always loaded as the first card
2295 (index 0) and ens1371 as the second (index 1).
2297 Alternative (and new) way to fixate the slot assignment is to use
2298 "slots" option of snd module. In the case above, specify like the
2301 options snd slots=snd-interwave,snd-ens1371
2303 Then, the first slot (#0) is reserved for snd-interwave driver, and
2304 the second (#1) for snd-ens1371. You can omit index option in each
2305 driver if slots option is used (although you can still have them at
2306 the same time as long as they don't conflict).
2308 The slots option is especially useful for avoiding the possible
2309 hot-plugging and the resultant slot conflict. For example, in the
2310 case above again, the first two slots are already reserved. If any
2311 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2312 snd-ens1371, it will be assigned to the third or later slot.
2314 When a module name is given with '!', the slot will be given for any
2315 modules but that name. For example, "slots=!snd-pcsp" will reserve
2316 the first slot for any modules but snd-pcsp.
2319 ALSA PCM devices to OSS devices mapping
2320 =======================================
2322 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2323 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2324 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2325 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2326 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2327 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2328 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2329 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2330 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2332 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2333 sound card number and second means device number. The ALSA devices
2334 have either 'c' or 'p' suffix indicating the direction, capture and
2335 playback, respectively.
2337 Please note that the device mapping above may be varied via the module
2338 options of snd-pcm-oss module.
2341 Proc interfaces (/proc/asound)
2342 ==============================
2344 /proc/asound/card#/pcm#[cp]/oss
2345 -------------------------------
2346 String "erase" - erase all additional informations about OSS applications
2347 String "<app_name> <fragments> <fragment_size> [<options>]"
2349 <app_name> - name of application with (higher priority) or without path
2350 <fragments> - number of fragments or zero if auto
2351 <fragment_size> - size of fragment in bytes or zero if auto
2352 <options> - optional parameters
2353 - disable the application tries to open a pcm device for
2354 this channel but does not want to use it.
2355 (Cause a bug or mmap needs)
2356 It's good for Quake etc...
2357 - direct don't use plugins
2358 - block force block mode (rvplayer)
2359 - non-block force non-block mode
2360 - whole-frag write only whole fragments (optimization affecting
2362 - no-silence do not fill silence ahead to avoid clicks
2363 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2364 instead of filled blocks
2366 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2367 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2368 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2371 Early Buffer Allocation
2372 =======================
2374 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2375 sometimes it's too late to find such spaces when the driver module is
2376 actually loaded due to memory fragmentation. You can pre-allocate the
2377 PCM buffers by loading snd-page-alloc module and write commands to its
2378 proc file in prior, for example, in the early boot stage like
2379 /etc/init.d/*.local scripts.
2381 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2382 usage of page allocation. In writing, you can send the following
2383 commands to the snd-page-alloc driver:
2385 - add VENDOR DEVICE MASK SIZE BUFFERS
2387 VENDOR and DEVICE are PCI vendor and device IDs. They take
2388 integer numbers (0x prefix is needed for the hex).
2389 MASK is the PCI DMA mask. Pass 0 if not restricted.
2390 SIZE is the size of each buffer to allocate. You can pass
2391 k and m suffix for KB and MB. The max number is 16MB.
2392 BUFFERS is the number of buffers to allocate. It must be greater
2393 than 0. The max number is 4.
2397 This will erase the all pre-allocated buffers which are not in
2404 ALSA project homepage
2405 http://www.alsa-project.org
2407 ALSA Bug Tracking System
2408 https://bugtrack.alsa-project.org/bugs/
2411 mailto:alsa-devel@alsa-project.org
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