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-dmic Acer laptops with digital-mic
848 acer-aspire Acer Aspire One
849 dell Dell OEM laptops (Vostro 1200)
851 test for testing/debugging purpose, almost all controls can
852 adjusted. Appearing only when compiled with
854 auto auto-config reading BIOS (default)
859 eeepc-p703 ASUS Eeepc P703 P900A
860 eeepc-p901 ASUS Eeepc P901 S101
862 auto auto-config reading BIOS (default)
865 3stack-dig 3-stack (2-channel) with SPDIF
866 3stack-6ch 3-stack (6-channel)
867 3stack-6ch-dig 3-stack (6-channel) with SPDIF
868 6stack-dig 6-stack with SPDIF
869 lenovo-101e Lenovo laptop
870 eeepc-p701 ASUS Eeepc P701
871 eeepc-ep20 ASUS Eeepc EP20
883 auto auto-config reading BIOS (default)
886 3stack-dig 3-jack with SPDIF I/O
887 6stack-dig 6-jack digital with SPDIF I/O
889 targa Targa T8, MSI-1049 T8
892 macpro MacPro support
893 mbp3 Macbook Pro rev3
894 imac24 iMac 24'' with jack detection
896 auto auto-config reading BIOS (default)
899 3stack-dig 3-jack with SPDIF I/O
900 6stack-dig 6-jack digital with SPDIF I/O
901 3stack-6ch 3-jack 6-channel
902 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
903 6stack-dig-demo 6-jack digital for Intel demo board
904 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
905 acer-aspire Acer Aspire 9810
906 acer-aspire-4930g Acer Aspire 4930G
907 medion Medion Laptops
908 medion-md2 Medion MD2
910 targa-2ch-dig Targs/MSI with 2-channel
911 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
912 lenovo-101e Lenovo 101E
913 lenovo-nb0763 Lenovo NB0763
914 lenovo-ms7195-dig Lenovo MS7195
915 lenovo-sky Lenovo Sky
917 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
918 6stack-dell Dell machines with 6stack (Inspiron 530)
920 clevo-m720 Clevo M720 laptop series
921 fujitsu-pi2515 Fujitsu AMILO Pi2515
922 fujitsu-xa3530 Fujitsu AMILO XA3530
923 3stack-6ch-intel Intel DG33* boards
924 auto auto-config reading BIOS (default)
928 3stack-dig 3-jack with SPDIF I/O
929 6stack-dig 6-jack with SPDIF I/O
930 3stack-660 3-jack (for ALC660)
931 uniwill-m31 Uniwill M31 laptop
932 toshiba Toshiba laptop support
933 asus Asus laptop support
934 asus-laptop ASUS F2/F3 laptops
935 auto auto-config reading BIOS (default)
939 3stack-dig 3-jack with SPDIF OUT
940 6stack-dig 6-jack with SPDIF OUT
941 3stack-660 3-jack (for ALC660VD)
942 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
943 lenovo Lenovo 3000 C200
944 dallas Dallas laptops
947 auto auto-config reading BIOS (default)
950 minimal 3-jack in back
951 min_fp 3-jack in back, 2-jack in front
952 full 6-jack in back, 2-jack in front
953 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
954 allout 5-jack in back, 2-jack in front, SPDIF out
955 auto auto-config reading BIOS (default)
958 3stack 3-stack mode (default)
961 AD1884A / AD1883 / AD1984A / AD1984B
962 desktop 3-stack desktop (default)
963 laptop laptop with HP jack sensing
964 mobile mobile devices with HP jack sensing
965 thinkpad Lenovo Thinkpad X300
971 basic 3-jack (default)
973 thinkpad Lenovo Thinkpad T60/X60/Z60
980 basic default configuration
981 thinkpad Lenovo Thinkpad T61/X61
985 6stack 6-jack, separate surrounds (default)
986 3stack 3-stack, shared surrounds
987 laptop 2-channel only (FSC V2060, Samsung M50)
988 laptop-eapd 2-channel with EAPD (ASUS A6J)
989 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
990 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
991 samsung 2-channel with EAPD (Samsung R65)
993 AD1988/AD1988B/AD1989A/AD1989B
995 6stack-dig ditto with SPDIF
997 3stack-dig ditto with SPDIF
998 laptop 3-jack with hp-jack automute
999 laptop-dig ditto with SPDIF
1000 auto auto-config reading BIOS (default)
1003 laptop-hpsense Laptop with HP sense (old model laptop)
1004 laptop-micsense Laptop with Mic sense (old model fujitsu)
1005 laptop-hpmicsense Laptop with HP and Mic senses
1007 test for testing/debugging purpose, almost all controls
1008 can be adjusted. Appearing only when compiled with
1012 laptop Basic Laptop config
1013 laptop-hp Laptop config for some HP models (subdevice 30A5)
1014 laptop-eapd Laptop config with EAPD support
1015 test for testing/debugging purpose, almost all controls
1016 can be adjusted. Appearing only when compiled with
1020 laptop Basic Laptop config (default)
1021 hp HP Spartan laptop
1025 dell-d21 Dell (unknown)
1026 dell-d22 Dell (unknown)
1027 dell-d23 Dell (unknown)
1028 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
1029 dell-m22 Dell Latitude D620, Dell Latitude D820
1030 dell-m23 Dell XPS M1710, Dell Precision M90
1031 dell-m24 Dell Latitude 120L
1032 dell-m25 Dell Inspiron E1505n
1033 dell-m26 Dell Inspiron 1501
1034 dell-m27 Dell Inspiron E1705/9400
1035 gateway Gateway laptops with EAPD control
1036 panasonic Panasonic CF-74
1040 dell-m42 Dell (unknown)
1041 dell-m43 Dell Precision
1042 dell-m44 Dell Inspiron
1047 5stack D945 5stack + SPDIF
1048 intel-mac-v1 Intel Mac Type 1
1049 intel-mac-v2 Intel Mac Type 2
1050 intel-mac-v3 Intel Mac Type 3
1051 intel-mac-v4 Intel Mac Type 4
1052 intel-mac-v5 Intel Mac Type 5
1053 intel-mac-auto Intel Mac (detect type according to subsystem id)
1054 macmini Intel Mac Mini (equivalent with type 3)
1055 macbook Intel Mac Book (eq. type 5)
1056 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1057 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1058 imac-intel Intel iMac (eq. type 2)
1059 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1060 dell-d81 Dell (unknown)
1061 dell-d82 Dell (unknown)
1062 dell-m81 Dell (unknown)
1063 dell-m82 Dell XPS M1210
1066 ref Reference board, base config
1067 m2-2 Some Gateway MX series laptops
1068 m6 Some Gateway NX series laptops
1069 pa6 Gateway NX860 series
1071 STAC9227/9228/9229/927x
1074 5stack D965 5stack + SPDIF
1075 dell-3stack Dell Dimension E520
1076 dell-bios Fixes with Dell BIOS setup
1080 dell-m4-1 Dell desktops
1081 dell-m4-2 Dell desktops
1082 dell-m4-3 Dell desktops
1086 dell-m6-amic Dell desktops/laptops with analog mics
1087 dell-m6-dmic Dell desktops/laptops with digital mics
1088 dell-m6 Dell desktops/laptops with both type of mics
1091 vaio Setup for VAIO FE550G/SZ110
1092 vaio-ar Setup for VAIO AR
1094 The model name "genric" is treated as a special case. When this
1095 model is given, the driver uses the generic codec parser without
1096 "codec-patch". It's sometimes good for testing and debugging.
1098 If the default configuration doesn't work and one of the above
1099 matches with your device, report it together with the PCI
1100 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1101 ML (see the section "Links and Addresses").
1103 power_save and power_save_controller options are for power-saving
1104 mode. See powersave.txt for details.
1106 Note 2: If you get click noises on output, try the module option
1107 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1108 register value without FIFO size correction as the current
1109 DMA pointer. position_fix=2 will make the driver to use
1110 the position buffer instead of reading SD_LPIB register.
1111 (Usually SD_LPIB register is more accurate than the
1114 NB: If you get many "azx_get_response timeout" messages at
1115 loading, it's likely a problem of interrupts (e.g. ACPI irq
1116 routing). Try to boot with options like "pci=noacpi". Also, you
1117 can try "single_cmd=1" module option. This will switch the
1118 communication method between HDA controller and codecs to the
1119 single immediate commands instead of CORB/RIRB. Basically, the
1120 single command mode is provided only for BIOS, and you won't get
1121 unsolicited events, too. But, at least, this works independently
1122 from the irq. Remember this is a last resort, and should be
1123 avoided as much as possible...
1125 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1126 On some hardwares, you may need to add a proper probe_mask option
1127 to avoid the "azx_get_response timeout" problem above, instead.
1128 This occurs when the access to non-existing or non-working codec slot
1129 (likely a modem one) causes a stall of the communication via HD-audio
1130 bus. You can see which codec slots are probed by enabling
1131 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1132 proc files. Then limit the slots to probe by probe_mask option.
1133 For example, probe_mask=1 means to probe only the first slot, and
1134 probe_mask=4 means only the third slot.
1136 The power-management is supported.
1141 Module for RME Hammerfall DSP audio interface(s)
1143 This module supports multiple cards.
1145 Note: The firmware data can be automatically loaded via hotplug
1146 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1147 the firmware via hdsploader utility included in alsa-tools
1149 The firmware data is found in alsa-firmware package.
1151 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1152 module did formerly. It will allocate the buffers in advance
1153 when any HDSP cards are found. To make the buffer
1154 allocation sure, load snd-page-alloc module in the early
1155 stage of boot sequence. See "Early Buffer Allocation"
1161 Module for RME HDSP MADI board.
1163 precise_ptr - Enable precise pointer, or disable.
1164 line_outs_monitor - Send playback streams to analog outs by default.
1165 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1167 See hdspm.txt for details.
1172 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1174 This module supports autoprobe and multiple cards.
1179 Module for Envy24 (ICE1712) based PCI sound cards.
1180 * MidiMan M Audio Delta 1010
1181 * MidiMan M Audio Delta 1010LT
1182 * MidiMan M Audio Delta DiO 2496
1183 * MidiMan M Audio Delta 66
1184 * MidiMan M Audio Delta 44
1185 * MidiMan M Audio Delta 410
1186 * MidiMan M Audio Audiophile 2496
1189 * TerraTec EWX 24/96
1190 * TerraTec DMX 6Fire
1192 * Hoontech SoundTrack DSP 24
1193 * Hoontech SoundTrack DSP 24 Value
1194 * Hoontech SoundTrack DSP 24 Media 7.1
1195 * Event Electronics, EZ8
1197 * Lionstracs, Mediastaton
1200 model - Use the given board model, one of the following:
1201 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1202 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1203 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1204 phase88, mediastation
1205 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1206 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1207 in msec resolution, default value is 500 (0.5 sec)
1209 This module supports multiple cards and autoprobe. Note: The consumer part
1210 is not used with all Envy24 based cards (for example in the MidiMan Delta
1213 Note: The supported board is detected by reading EEPROM or PCI
1214 SSID (if EEPROM isn't available). You can override the
1215 model by passing "model" module option in case that the
1216 driver isn't configured properly or you want to try another
1222 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1223 * MidiMan M Audio Revolution 5.1
1224 * MidiMan M Audio Revolution 7.1
1225 * MidiMan M Audio Audiophile 192
1227 * TerraTec Aureon 5.1 Sky
1228 * TerraTec Aureon 7.1 Space
1229 * TerraTec Aureon 7.1 Universe
1232 * AudioTrak Prodigy 7.1
1233 * AudioTrak Prodigy 7.1 LT
1234 * AudioTrak Prodigy 7.1 XT
1235 * AudioTrak Prodigy 7.1 HIFI
1236 * AudioTrak Prodigy 7.1 HD2
1237 * AudioTrak Prodigy 192
1239 * Albatron K8X800 Pro II
1240 * Chaintech ZNF3-150
1241 * Chaintech ZNF3-250
1248 * Hercules Fortissimo IV
1249 * EGO-SYS WaveTerminal 192M
1251 model - Use the given board model, one of the following:
1252 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1253 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1254 juli, aureon51, aureon71, universe, ap192, k8x800,
1255 phase22, phase28, ms300, av710, se200pci, se90pci,
1256 fortissimo4, sn25p, WT192M
1258 This module supports multiple cards and autoprobe.
1260 Note: The supported board is detected by reading EEPROM or PCI
1261 SSID (if EEPROM isn't available). You can override the
1262 model by passing "model" module option in case that the
1263 driver isn't configured properly or you want to try another
1269 Module for Echoaudio Indigo
1271 This module supports multiple cards.
1272 The driver requires the firmware loader support on kernel.
1277 Module for Echoaudio Indigo DJ
1279 This module supports multiple cards.
1280 The driver requires the firmware loader support on kernel.
1285 Module for Echoaudio Indigo IO
1287 This module supports multiple cards.
1288 The driver requires the firmware loader support on kernel.
1293 Module for AC'97 motherboards from Intel and compatibles.
1294 * Intel i810/810E, i815, i820, i830, i84x, MX440
1295 ICH5, ICH6, ICH7, 6300ESB, ESB2
1296 * SiS 7012 (SiS 735)
1297 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1299 * AMD AMD768, AMD8111
1302 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1303 ac97_quirk - AC'97 workaround for strange hardware
1304 See "AC97 Quirk Option" section below.
1305 buggy_irq - Enable workaround for buggy interrupts on some
1306 motherboards (default yes on nForce chips,
1308 buggy_semaphore - Enable workaround for hardwares with buggy
1309 semaphores (e.g. on some ASUS laptops)
1311 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1312 from the controller chip
1313 (0 = off, 1 = on, -1 = default)
1315 This module supports one chip and autoprobe.
1317 Note: the latest driver supports auto-detection of chip clock.
1318 if you still encounter too fast playback, specify the clock
1319 explicitly via the module option "ac97_clock=41194".
1321 Joystick/MIDI ports are not supported by this driver. If your
1322 motherboard has these devices, use the ns558 or snd-mpu401
1323 modules, respectively.
1325 The power-management is supported.
1327 Module snd-intel8x0m
1328 --------------------
1330 Module for Intel ICH (i8x0) chipset MC97 modems.
1331 * Intel i810/810E, i815, i820, i830, i84x, MX440
1333 * SiS 7013 (SiS 735)
1334 * NVidia NForce, NForce2, NForce2s, NForce3
1338 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1340 This module supports one card and autoprobe.
1342 Note: The default index value of this module is -2, i.e. the first
1345 The power-management is supported.
1347 Module snd-interwave
1348 --------------------
1350 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1351 and other sound cards based on AMD InterWave (tm) chip.
1353 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1354 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1355 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1356 effect - 1 = InterWave effects enable (default 0);
1358 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1360 with isapnp=0, the following options are available:
1362 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1363 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1364 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1365 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1367 This module supports multiple cards, autoprobe and ISA PnP.
1369 Module snd-interwave-stb
1370 ------------------------
1372 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1373 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1374 circuit for extended control of bass, treble and master volume.
1376 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1377 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1378 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1379 effect - 1 = InterWave effects enable (default 0);
1381 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1383 with isapnp=0, the following options are available:
1385 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1386 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1387 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1388 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1389 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1391 This module supports multiple cards, autoprobe and ISA PnP.
1396 Module for Korg 1212 IO PCI card
1398 This module supports multiple cards.
1403 Module for Echoaudio Layla20
1405 This module supports multiple cards.
1406 The driver requires the firmware loader support on kernel.
1411 Module for Echoaudio Layla24
1413 This module supports multiple cards.
1414 The driver requires the firmware loader support on kernel.
1419 Module for Allegro/Maestro3 chips
1421 external_amp - enable external amp (enabled by default)
1422 amp_gpio - GPIO pin number for external amp (0-15) or
1423 -1 for default pin (8 for allegro, 1 for
1426 This module supports autoprobe and multiple chips.
1428 Note: the binding of amplifier is dependent on hardware.
1429 If there is no sound even though all channels are unmuted, try to
1430 specify other gpio connection via amp_gpio option.
1431 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1434 The power-management is supported.
1439 Module for Echoaudio Mia
1441 This module supports multiple cards.
1442 The driver requires the firmware loader support on kernel.
1447 Module for Miro soundcards: miroSOUND PCM 1 pro,
1449 miroSOUND PCM 20 Radio.
1451 port - Port # (0x530,0x604,0xe80,0xf40)
1452 irq - IRQ # (5,7,9,10,11)
1453 dma1 - 1st dma # (0,1,3)
1454 dma2 - 2nd dma # (0,1)
1455 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1456 mpu_irq - MPU-401 irq # (5,7,9,10)
1457 fm_port - FM Port # (0x388)
1458 wss - enable WSS mode
1459 ide - enable onboard ide support
1464 Module for Digigram miXart8 sound cards.
1466 This module supports multiple cards.
1467 Note: One miXart8 board will be represented as 4 alsa cards.
1468 See MIXART.txt for details.
1470 When the driver is compiled as a module and the hotplug firmware
1471 is supported, the firmware data is loaded via hotplug automatically.
1472 Install the necessary firmware files in alsa-firmware package.
1473 When no hotplug fw loader is available, you need to load the
1474 firmware via mixartloader utility in alsa-tools package.
1479 Module for Echoaudio Mona
1481 This module supports multiple cards.
1482 The driver requires the firmware loader support on kernel.
1487 Module for MPU-401 UART devices.
1489 port - port number or -1 (disable)
1490 irq - IRQ number or -1 (disable)
1491 pnp - PnP detection - 0 = disable, 1 = enable (default)
1493 This module supports multiple devices and PnP.
1498 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1501 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1502 irq - IRQ # for MTPAV (7,5, default=7)
1503 hwports - number of supported hardware ports, default=8.
1505 Module supports only 1 card. This module has no enable option.
1510 Module for Ego Systems (ESI) Miditerminal 4140
1512 This module supports multiple devices.
1513 Requires parport (CONFIG_PARPORT).
1518 Module for NeoMagic NM256AV/ZX chips
1520 playback_bufsize - max playback frame size in kB (4-128kB)
1521 capture_bufsize - max capture frame size in kB (4-128kB)
1522 force_ac97 - 0 or 1 (disabled by default)
1523 buffer_top - specify buffer top address
1524 use_cache - 0 or 1 (disabled by default)
1525 vaio_hack - alias buffer_top=0x25a800
1526 reset_workaround - enable AC97 RESET workaround for some laptops
1527 reset_workaround2 - enable extended AC97 RESET workaround for some
1530 This module supports one chip and autoprobe.
1532 The power-management is supported.
1534 Note: on some notebooks the buffer address cannot be detected
1535 automatically, or causes hang-up during initialization.
1536 In such a case, specify the buffer top address explicitly via
1537 the buffer_top option.
1539 Sony F250: buffer_top=0x25a800
1540 Sony F270: buffer_top=0x272800
1541 The driver supports only ac97 codec. It's possible to force
1542 to initialize/use ac97 although it's not detected. In such a
1543 case, use force_ac97=1 option - but *NO* guarantee whether it
1546 Note: The NM256 chip can be linked internally with non-AC97
1547 codecs. This driver supports only the AC97 codec, and won't work
1548 with machines with other (most likely CS423x or OPL3SAx) chips,
1549 even though the device is detected in lspci. In such a case, try
1550 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1551 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1552 and proper hardware parameters in the case without ISA PnP.
1554 Note: some laptops need a workaround for AC97 RESET. For the
1555 known hardware like Dell Latitude LS and Sony PCG-F305, this
1556 workaround is enabled automatically. For other laptops with a
1557 hard freeze, you can try reset_workaround=1 option.
1559 Note: Dell Latitude CSx laptops have another problem regarding
1560 AC97 RESET. On these laptops, reset_workaround2 option is
1561 turned on as default. This option is worth to try if the
1562 previous reset_workaround option doesn't help.
1564 Note: This driver is really crappy. It's a porting from the
1565 OSS driver, which is a result of black-magic reverse engineering.
1566 The detection of codec will fail if the driver is loaded *after*
1567 X-server as described above. You might be able to force to load
1568 the module, but it may result in hang-up. Hence, make sure that
1569 you load this module *before* X if you encounter this kind of
1575 Module for Yamaha OPL3-SA2/SA3 sound cards.
1577 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1579 with isapnp=0, the following options are available:
1581 port - control port # for OPL3-SA chip (0x370)
1582 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1583 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1584 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1585 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1586 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1587 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1588 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1590 This module supports multiple cards and ISA PnP. It does not support
1591 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1593 The power-management is supported.
1595 Module snd-opti92x-ad1848
1596 -------------------------
1598 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1599 Module works with OAK Mozart cards as well.
1601 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1603 with isapnp=0, the following options are available:
1605 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1606 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1607 fm_port - port # for OPL3 device (0x388)
1608 irq - IRQ # for WSS chip (5,7,9,10,11)
1609 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1610 dma1 - first DMA # for WSS chip (0,1,3)
1612 This module supports only one card, autoprobe and PnP.
1614 Module snd-opti92x-cs4231
1615 -------------------------
1617 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1619 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1621 with isapnp=0, the following options are available:
1623 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1624 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1625 fm_port - port # for OPL3 device (0x388)
1626 irq - IRQ # for WSS chip (5,7,9,10,11)
1627 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1628 dma1 - first DMA # for WSS chip (0,1,3)
1629 dma2 - second DMA # for WSS chip (0,1,3)
1631 This module supports only one card, autoprobe and PnP.
1636 Module for sound cards based on OPTi 82c93x chips.
1638 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1640 with isapnp=0, the following options are available:
1642 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1643 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1644 fm_port - port # for OPL3 device (0x388)
1645 irq - IRQ # for WSS chip (5,7,9,10,11)
1646 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1647 dma1 - first DMA # for WSS chip (0,1,3)
1648 dma2 - second DMA # for WSS chip (0,1,3)
1650 This module supports only one card, autoprobe and PnP.
1655 Module for sound cards based on the C-Media CMI8788 chip:
1657 * AuzenTech X-Meridian
1659 * Club3D Theatron DTS
1661 * Razer Barracuda AC-1
1664 This module supports autoprobe and multiple cards.
1669 Module for internal PC-Speaker.
1671 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1673 This module supports system beeps, some kind of PCM playback and
1674 even a few mixer controls.
1679 Module for Digigram PCXHR boards
1681 This module supports multiple cards.
1683 Module snd-portman2x4
1684 ---------------------
1686 Module for Midiman Portman 2x4 parallel port MIDI interface
1688 This module supports multiple cards.
1690 Module snd-powermac (on ppc only)
1691 ---------------------------------
1693 Module for PowerMac, iMac and iBook on-board soundchips
1695 enable_beep - enable beep using PCM (enabled as default)
1697 Module supports autoprobe a chip.
1699 Note: the driver may have problems regarding endianess.
1701 The power-management is supported.
1703 Module snd-pxa2xx-ac97 (on arm only)
1704 ------------------------------------
1706 Module for AC97 driver for the Intel PXA2xx chip
1708 For ARM architecture only.
1710 The power-management is supported.
1715 Module for Conexant Riptide chip
1717 joystick_port - Joystick port # (default: 0x200)
1718 mpu_port - MPU401 port # (default: 0x330)
1719 opl3_port - OPL3 port # (default: 0x388)
1721 This module supports multiple cards.
1722 The driver requires the firmware loader support on kernel.
1723 You need to install the firmware file "riptide.hex" to the standard
1724 firmware path (e.g. /lib/firmware).
1729 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1730 Prodif96 and Prodif Gold) sound cards.
1732 This module supports multiple cards.
1737 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1739 This module supports multiple cards.
1744 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1746 precise_ptr - Enable precise pointer (doesn't work reliably).
1749 This module supports multiple cards.
1751 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1752 module did formerly. It will allocate the buffers in advance
1753 when any RME9652 cards are found. To make the buffer
1754 allocation sure, load snd-page-alloc module in the early
1755 stage of boot sequence. See "Early Buffer Allocation"
1758 Module snd-sa11xx-uda1341 (on arm only)
1759 ---------------------------------------
1761 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1763 Module supports only one card.
1764 Module has no enable and index options.
1766 The power-management is supported.
1771 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1775 port - port # for SB DSP chip (0x220,0x240,0x260)
1776 irq - IRQ # for SB DSP chip (5,7,9,10)
1777 dma8 - DMA # for SB DSP chip (1,3)
1779 This module supports multiple cards and autoprobe.
1781 The power-management is supported.
1783 Module snd-sb16 and snd-sbawe
1784 -----------------------------
1786 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1787 SoundBlaster AWE 32 (PnP),
1788 SoundBlaster AWE 64 PnP
1790 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1791 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1792 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1794 with isapnp=0, the following options are available:
1796 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1797 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1798 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1799 (snd-sbawe module only)
1800 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1801 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1802 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1804 This module supports multiple cards, autoprobe and ISA PnP.
1806 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1807 disable 16bit DMA with dma16 = -1 module parameter.
1808 Also, all Sound Blaster 16 type cards can operate in 16-bit
1809 half duplex mode through 8-bit DMA channel by disabling their
1812 The power-management is supported.
1817 Module for Gallant SC-6000 soundcard.
1819 port - Port # (0x220 or 0x240)
1820 mss_port - MSS Port # (0x530 or 0xe80)
1821 irq - IRQ # (5,7,9,10,11)
1822 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1825 This module supports multiple cards.
1827 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1832 Module for Aztech Sound Galaxy sound card.
1834 sbport - Port # for SB16 interface (0x220,0x240)
1835 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1836 irq - IRQ # (7,9,10,11)
1839 This module supports multiple cards.
1841 The power-management is supported.
1846 Module for ENSONIQ SoundScape PnP cards.
1848 port - Port # (PnP setup)
1849 wss_port - WSS Port # (PnP setup)
1850 irq - IRQ # (PnP setup)
1851 mpu_irq - MPU-401 IRQ # (PnP setup)
1852 dma - DMA # (PnP setup)
1853 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1855 This module supports multiple cards. ISA PnP must be enabled.
1856 You need sscape_ctl tool in alsa-tools package for loading
1859 Module snd-sun-amd7930 (on sparc only)
1860 --------------------------------------
1862 Module for AMD7930 sound chips found on Sparcs.
1864 This module supports multiple cards.
1866 Module snd-sun-cs4231 (on sparc only)
1867 -------------------------------------
1869 Module for CS4231 sound chips found on Sparcs.
1871 This module supports multiple cards.
1873 Module snd-sun-dbri (on sparc only)
1874 -----------------------------------
1876 Module for DBRI sound chips found on Sparcs.
1878 This module supports multiple cards.
1880 Module snd-wavefront
1881 --------------------
1883 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1885 use_cs4232_midi - Use CS4232 MPU-401 interface
1886 (inaccessibly located inside your computer)
1887 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1889 with isapnp=0, the following options are available:
1891 cs4232_pcm_port - Port # for CS4232 PCM interface.
1892 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1893 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1894 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1895 ics2115_port - Port # for ICS2115
1896 ics2115_irq - IRQ # for ICS2115
1897 fm_port - FM OPL-3 Port #
1898 dma1 - DMA1 # for CS4232 PCM interface.
1899 dma2 - DMA2 # for CS4232 PCM interface.
1901 The below are options for wavefront_synth features:
1902 wf_raw - Assume that we need to boot the OS (default:no)
1903 If yes, then during driver loading, the state of the board is
1904 ignored, and we reset the board and load the firmware anyway.
1905 fx_raw - Assume that the FX process needs help (default:yes)
1906 If false, we'll leave the FX processor in whatever state it is
1907 when the driver is loaded. The default is to download the
1908 microprogram and associated coefficients to set it up for
1909 "default" operation, whatever that means.
1910 debug_default - Debug parameters for card initialization
1911 wait_usecs - How long to wait without sleeping, usecs
1913 This magic number seems to give pretty optimal throughput
1914 based on my limited experimentation.
1915 If you want to play around with it and find a better value, be
1916 my guest. Remember, the idea is to get a number that causes us
1917 to just busy wait for as many WaveFront commands as possible,
1918 without coming up with a number so large that we hog the whole
1920 Specifically, with this number, out of about 134,000 status
1921 waits, only about 250 result in a sleep.
1922 sleep_interval - How long to sleep when waiting for reply
1924 sleep_tries - How many times to try sleeping during a wait
1926 ospath - Pathname to processed ICS2115 OS firmware
1927 (default:wavefront.os)
1928 The path name of the ISC2115 OS firmware. In the recent
1929 version, it's handled via firmware loader framework, so it
1930 must be installed in the proper path, typically,
1932 reset_time - How long to wait for a reset to take effect
1934 ramcheck_time - How many seconds to wait for the RAM test
1936 osrun_time - How many seconds to wait for the ICS2115 OS
1939 This module supports multiple cards and ISA PnP.
1941 Note: the firmware file "wavefront.os" was located in the earlier
1942 version in /etc. Now it's loaded via firmware loader, and
1943 must be in the proper firmware path, such as /lib/firmware.
1944 Copy (or symlink) the file appropriately if you get an error
1945 regarding firmware downloading after upgrading the kernel.
1947 Module snd-sonicvibes
1948 ---------------------
1950 Module for S3 SonicVibes PCI sound cards.
1951 * PINE Schubert 32 PCI
1953 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1954 - SoundCard must have onboard SRAM for this.
1955 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1957 This module supports multiple cards and autoprobe.
1959 Module snd-serial-u16550
1960 ------------------------
1962 Module for UART16550A serial MIDI ports.
1964 port - port # for UART16550A chip
1965 irq - IRQ # for UART16550A chip, -1 = poll mode
1966 speed - speed in bauds (9600,19200,38400,57600,115200)
1968 base - base for divisor in bauds (57600,115200,230400,460800)
1970 outs - number of MIDI ports in a serial port (1-4)
1972 adaptor - Type of adaptor.
1973 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1974 3 = MS-124W M/B, 4 = Generic
1976 This module supports multiple cards. This module does not support autoprobe
1977 thus the main port must be specified!!! Other options are optional.
1982 Module for Trident 4DWave DX/NX sound cards.
1983 * Best Union Miss Melody 4DWave PCI
1985 * Warpspeed ONSpeed 4DWave PCI
1988 * CHIC True Sound 4Dwave
1989 * Shark Predator4D-PCI
1990 * Jaton SonicWave 4D
1991 * SiS SI7018 PCI Audio
1992 * Hoontech SoundTrack Digital 4DWave NX
1994 pcm_channels - max channels (voices) reserved for PCM
1995 wavetable_size - max wavetable size in kB (4-?kb)
1997 This module supports multiple cards and autoprobe.
1999 The power-management is supported.
2001 Module snd-usb-audio
2002 --------------------
2004 Module for USB audio and USB MIDI devices.
2006 vid - Vendor ID for the device (optional)
2007 pid - Product ID for the device (optional)
2008 nrpacks - Max. number of packets per URB (default: 8)
2009 async_unlink - Use async unlink mode (default: yes)
2010 device_setup - Device specific magic number (optional)
2011 - Influence depends on the device
2013 ignore_ctl_error - Ignore any USB-controller regarding mixer
2014 interface (default: no)
2016 This module supports multiple devices, autoprobe and hotplugging.
2018 NB: nrpacks parameter can be modified dynamically via sysfs.
2019 Don't put the value over 20. Changing via sysfs has no sanity
2021 NB: async_unlink=0 would cause Oops. It remains just for
2022 debugging purpose (if any).
2023 NB: ignore_ctl_error=1 may help when you get an error at accessing
2024 the mixer element such as URB error -22. This happens on some
2025 buggy USB device or the controller.
2027 Module snd-usb-caiaq
2028 --------------------
2030 Module for caiaq UB audio interfaces,
2031 * Native Instruments RigKontrol2
2032 * Native Instruments Kore Controller
2033 * Native Instruments Audio Kontrol 1
2034 * Native Instruments Audio 8 DJ
2036 This module supports multiple devices, autoprobe and hotplugging.
2038 Module snd-usb-usx2y
2039 --------------------
2041 Module for Tascam USB US-122, US-224 and US-428 devices.
2043 This module supports multiple devices, autoprobe and hotplugging.
2045 Note: you need to load the firmware via usx2yloader utility included
2046 in alsa-tools and alsa-firmware packages.
2051 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2052 8233A, 8233C, 8235, 8237 (south) bridge.
2054 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2056 joystick - Enable joystick (default off) [VIA686A/686B only]
2057 ac97_clock - AC'97 codec clock base (default 48000Hz)
2058 dxs_support - support DXS channels,
2059 0 = auto (default), 1 = enable, 2 = disable,
2060 3 = 48k only, 4 = no VRA, 5 = enable any sample
2061 rate and different sample rates on different
2063 [VIA8233/C, 8235, 8237 only]
2064 ac97_quirk - AC'97 workaround for strange hardware
2065 See "AC97 Quirk Option" section below.
2067 This module supports one chip and autoprobe.
2069 Note: on some SMP motherboards like MSI 694D the interrupts might
2070 not be generated properly. In such a case, please try to
2071 set the SMP (or MPS) version on BIOS to 1.1 instead of
2072 default value 1.4. Then the interrupt number will be
2073 assigned under 15. You might also upgrade your BIOS.
2075 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2076 channels as the first PCM. On these channels, up to 4
2077 streams can be played at the same time, and the controller
2078 can perform sample rate conversion with separate rates for
2080 As default (dxs_support = 0), 48k fixed rate is chosen
2081 except for the known devices since the output is often
2082 noisy except for 48k on some mother boards due to the
2084 Please try once dxs_support=5 and if it works on other
2085 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2086 know the PCI subsystem vendor/device id's (output of
2088 If dxs_support=5 does not work, try dxs_support=4; if it
2089 doesn't work too, try dxs_support=1. (dxs_support=1 is
2090 usually for old motherboards. The correct implemented
2091 board should work with 4 or 5.) If it still doesn't
2092 work and the default setting is ok, dxs_support=3 is the
2093 right choice. If the default setting doesn't work at all,
2094 try dxs_support=2 to disable the DXS channels.
2095 In any cases, please let us know the result and the
2096 subsystem vendor/device ids. See "Links and Addresses"
2099 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2100 additionally. The mpu_port option is for VIA686 chips only.
2102 The power-management is supported.
2104 Module snd-via82xx-modem
2105 ------------------------
2107 Module for VIA82xx AC97 modem
2109 ac97_clock - AC'97 codec clock base (default 48000Hz)
2111 This module supports one card and autoprobe.
2113 Note: The default index value of this module is -2, i.e. the first
2116 The power-management is supported.
2121 Module for virtual rawmidi devices.
2122 This module creates virtual rawmidi devices which communicate
2123 to the corresponding ALSA sequencer ports.
2125 midi_devs - MIDI devices # (1-4, default=4)
2127 This module supports multiple cards.
2132 Module for sound cards based on the Asus AV100/AV200 chips,
2133 i.e., Xonar D1, DX, D2, D2X and HDAV1.3 (Deluxe).
2135 This module supports autoprobe and multiple cards.
2140 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2142 mic - Enable Microphone on V222 Mic (NYI)
2143 ibl - Capture IBL size. (default = 0, minimum size)
2145 This module supports multiple cards.
2147 When the driver is compiled as a module and the hotplug firmware
2148 is supported, the firmware data is loaded via hotplug automatically.
2149 Install the necessary firmware files in alsa-firmware package.
2150 When no hotplug fw loader is available, you need to load the
2151 firmware via vxloader utility in alsa-tools package. To invoke
2152 vxloader automatically, add the following to /etc/modprobe.conf
2154 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2156 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2157 /etc/modules.conf, instead.)
2158 IBL size defines the interrupts period for PCM. The smaller size
2159 gives smaller latency but leads to more CPU consumption, too.
2160 The size is usually aligned to 126. As default (=0), the smallest
2161 size is chosen. The possible IBL values can be found in
2162 /proc/asound/cardX/vx-status proc file.
2164 The power-management is supported.
2169 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2171 ibl - Capture IBL size. (default = 0, minimum size)
2173 This module supports multiple cards. The module is compiled only when
2174 PCMCIA is supported on kernel.
2176 With the older 2.6.x kernel, to activate the driver via the card
2177 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2178 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2179 longer require a config file.
2181 When the driver is compiled as a module and the hotplug firmware
2182 is supported, the firmware data is loaded via hotplug automatically.
2183 Install the necessary firmware files in alsa-firmware package.
2184 When no hotplug fw loader is available, you need to load the
2185 firmware via vxloader utility in alsa-tools package.
2187 About capture IBL, see the description of snd-vx222 module.
2189 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2192 The power-management is supported.
2197 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2199 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2200 1 (auto-detect for YMF744/754 only)
2201 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2202 1 (auto-detect for YMF744/754 only)
2203 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2205 rear_switch - enable shared rear/line-in switch (bool)
2207 This module supports autoprobe and multiple chips.
2209 The power-management is supported.
2211 Module snd-pdaudiocf
2212 --------------------
2214 Module for Sound Core PDAudioCF sound card.
2216 The power-management is supported.
2222 The ac97_quirk option is used to enable/override the workaround for
2223 specific devices on drivers for on-board AC'97 controllers like
2224 snd-intel8x0. Some hardware have swapped output pins between Master
2225 and Headphone, or Surround (thanks to confusion of AC'97
2226 specifications from version to version :-)
2228 The driver provides the auto-detection of known problematic devices,
2229 but some might be unknown or wrongly detected. In such a case, pass
2230 the proper value with this option.
2232 The following strings are accepted:
2233 - default Don't override the default setting
2234 - none Disable the quirk
2235 - hp_only Bind Master and Headphone controls as a single control
2236 - swap_hp Swap headphone and master controls
2237 - swap_surround Swap master and surround controls
2238 - ad_sharing For AD1985, turn on OMS bit and use headphone
2239 - alc_jack For ALC65x, turn on the jack sense mode
2240 - inv_eapd Inverted EAPD implementation
2241 - mute_led Bind EAPD bit for turning on/off mute LED
2243 For backward compatibility, the corresponding integer value -1, 0,
2244 ... are accepted, too.
2246 For example, if "Master" volume control has no effect on your device
2247 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2250 Configuring Non-ISAPNP Cards
2251 ============================
2253 When the kernel is configured with ISA-PnP support, the modules
2254 supporting the isapnp cards will have module options "isapnp".
2255 If this option is set, *only* the ISA-PnP devices will be probed.
2256 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2257 together with the proper i/o and irq configuration.
2259 When the kernel is configured without ISA-PnP support, isapnp option
2260 will be not built in.
2263 Module Autoloading Support
2264 ==========================
2266 The ALSA drivers can be loaded automatically on demand by defining
2267 module aliases. The string 'snd-card-%1' is requested for ALSA native
2268 devices where %i is sound card number from zero to seven.
2270 To auto-load an ALSA driver for OSS services, define the string
2271 'sound-slot-%i' where %i means the slot number for OSS, which
2272 corresponds to the card index of ALSA. Usually, define this
2273 as the same card module.
2275 An example configuration for a single emu10k1 card is like below:
2276 ----- /etc/modprobe.conf
2277 alias snd-card-0 snd-emu10k1
2278 alias sound-slot-0 snd-emu10k1
2279 ----- /etc/modprobe.conf
2281 The available number of auto-loaded sound cards depends on the module
2282 option "cards_limit" of snd module. As default it's set to 1.
2283 To enable the auto-loading of multiple cards, specify the number of
2284 sound cards in that option.
2286 When multiple cards are available, it'd better to specify the index
2287 number for each card via module option, too, so that the order of
2288 cards is kept consistent.
2290 An example configuration for two sound cards is like below:
2292 ----- /etc/modprobe.conf
2294 options snd cards_limit=2
2295 alias snd-card-0 snd-interwave
2296 alias snd-card-1 snd-ens1371
2297 options snd-interwave index=0
2298 options snd-ens1371 index=1
2300 alias sound-slot-0 snd-interwave
2301 alias sound-slot-1 snd-ens1371
2302 ----- /etc/modprobe.conf
2304 In this example, the interwave card is always loaded as the first card
2305 (index 0) and ens1371 as the second (index 1).
2307 Alternative (and new) way to fixate the slot assignment is to use
2308 "slots" option of snd module. In the case above, specify like the
2311 options snd slots=snd-interwave,snd-ens1371
2313 Then, the first slot (#0) is reserved for snd-interwave driver, and
2314 the second (#1) for snd-ens1371. You can omit index option in each
2315 driver if slots option is used (although you can still have them at
2316 the same time as long as they don't conflict).
2318 The slots option is especially useful for avoiding the possible
2319 hot-plugging and the resultant slot conflict. For example, in the
2320 case above again, the first two slots are already reserved. If any
2321 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2322 snd-ens1371, it will be assigned to the third or later slot.
2324 When a module name is given with '!', the slot will be given for any
2325 modules but that name. For example, "slots=!snd-pcsp" will reserve
2326 the first slot for any modules but snd-pcsp.
2329 ALSA PCM devices to OSS devices mapping
2330 =======================================
2332 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2333 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2334 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2335 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2336 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2337 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2338 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2339 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2340 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2342 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2343 sound card number and second means device number. The ALSA devices
2344 have either 'c' or 'p' suffix indicating the direction, capture and
2345 playback, respectively.
2347 Please note that the device mapping above may be varied via the module
2348 options of snd-pcm-oss module.
2351 Proc interfaces (/proc/asound)
2352 ==============================
2354 /proc/asound/card#/pcm#[cp]/oss
2355 -------------------------------
2356 String "erase" - erase all additional informations about OSS applications
2357 String "<app_name> <fragments> <fragment_size> [<options>]"
2359 <app_name> - name of application with (higher priority) or without path
2360 <fragments> - number of fragments or zero if auto
2361 <fragment_size> - size of fragment in bytes or zero if auto
2362 <options> - optional parameters
2363 - disable the application tries to open a pcm device for
2364 this channel but does not want to use it.
2365 (Cause a bug or mmap needs)
2366 It's good for Quake etc...
2367 - direct don't use plugins
2368 - block force block mode (rvplayer)
2369 - non-block force non-block mode
2370 - whole-frag write only whole fragments (optimization affecting
2372 - no-silence do not fill silence ahead to avoid clicks
2373 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2374 instead of filled blocks
2376 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2377 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2378 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2381 Early Buffer Allocation
2382 =======================
2384 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2385 sometimes it's too late to find such spaces when the driver module is
2386 actually loaded due to memory fragmentation. You can pre-allocate the
2387 PCM buffers by loading snd-page-alloc module and write commands to its
2388 proc file in prior, for example, in the early boot stage like
2389 /etc/init.d/*.local scripts.
2391 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2392 usage of page allocation. In writing, you can send the following
2393 commands to the snd-page-alloc driver:
2395 - add VENDOR DEVICE MASK SIZE BUFFERS
2397 VENDOR and DEVICE are PCI vendor and device IDs. They take
2398 integer numbers (0x prefix is needed for the hex).
2399 MASK is the PCI DMA mask. Pass 0 if not restricted.
2400 SIZE is the size of each buffer to allocate. You can pass
2401 k and m suffix for KB and MB. The max number is 16MB.
2402 BUFFERS is the number of buffers to allocate. It must be greater
2403 than 0. The max number is 4.
2407 This will erase the all pre-allocated buffers which are not in
2414 ALSA project homepage
2415 http://www.alsa-project.org
2417 ALSA Bug Tracking System
2418 https://bugtrack.alsa-project.org/bugs/
2421 mailto:alsa-devel@alsa-project.org
projects / linux-2.6-omap-h63xx.git / blob