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 Dell desktops
1089 vaio Setup for VAIO FE550G/SZ110
1090 vaio-ar Setup for VAIO AR
1092 The model name "genric" is treated as a special case. When this
1093 model is given, the driver uses the generic codec parser without
1094 "codec-patch". It's sometimes good for testing and debugging.
1096 If the default configuration doesn't work and one of the above
1097 matches with your device, report it together with the PCI
1098 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1099 ML (see the section "Links and Addresses").
1101 power_save and power_save_controller options are for power-saving
1102 mode. See powersave.txt for details.
1104 Note 2: If you get click noises on output, try the module option
1105 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1106 register value without FIFO size correction as the current
1107 DMA pointer. position_fix=2 will make the driver to use
1108 the position buffer instead of reading SD_LPIB register.
1109 (Usually SD_LPIB register is more accurate than the
1112 NB: If you get many "azx_get_response timeout" messages at
1113 loading, it's likely a problem of interrupts (e.g. ACPI irq
1114 routing). Try to boot with options like "pci=noacpi". Also, you
1115 can try "single_cmd=1" module option. This will switch the
1116 communication method between HDA controller and codecs to the
1117 single immediate commands instead of CORB/RIRB. Basically, the
1118 single command mode is provided only for BIOS, and you won't get
1119 unsolicited events, too. But, at least, this works independently
1120 from the irq. Remember this is a last resort, and should be
1121 avoided as much as possible...
1123 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1124 On some hardwares, you may need to add a proper probe_mask option
1125 to avoid the "azx_get_response timeout" problem above, instead.
1126 This occurs when the access to non-existing or non-working codec slot
1127 (likely a modem one) causes a stall of the communication via HD-audio
1128 bus. You can see which codec slots are probed by enabling
1129 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1130 proc files. Then limit the slots to probe by probe_mask option.
1131 For example, probe_mask=1 means to probe only the first slot, and
1132 probe_mask=4 means only the third slot.
1134 The power-management is supported.
1139 Module for RME Hammerfall DSP audio interface(s)
1141 This module supports multiple cards.
1143 Note: The firmware data can be automatically loaded via hotplug
1144 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1145 the firmware via hdsploader utility included in alsa-tools
1147 The firmware data is found in alsa-firmware package.
1149 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1150 module did formerly. It will allocate the buffers in advance
1151 when any HDSP cards are found. To make the buffer
1152 allocation sure, load snd-page-alloc module in the early
1153 stage of boot sequence. See "Early Buffer Allocation"
1159 Module for RME HDSP MADI board.
1161 precise_ptr - Enable precise pointer, or disable.
1162 line_outs_monitor - Send playback streams to analog outs by default.
1163 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1165 See hdspm.txt for details.
1170 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1172 This module supports autoprobe and multiple cards.
1177 Module for Envy24 (ICE1712) based PCI sound cards.
1178 * MidiMan M Audio Delta 1010
1179 * MidiMan M Audio Delta 1010LT
1180 * MidiMan M Audio Delta DiO 2496
1181 * MidiMan M Audio Delta 66
1182 * MidiMan M Audio Delta 44
1183 * MidiMan M Audio Delta 410
1184 * MidiMan M Audio Audiophile 2496
1187 * TerraTec EWX 24/96
1188 * TerraTec DMX 6Fire
1190 * Hoontech SoundTrack DSP 24
1191 * Hoontech SoundTrack DSP 24 Value
1192 * Hoontech SoundTrack DSP 24 Media 7.1
1193 * Event Electronics, EZ8
1195 * Lionstracs, Mediastaton
1198 model - Use the given board model, one of the following:
1199 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1200 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1201 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1202 phase88, mediastation
1203 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1204 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1205 in msec resolution, default value is 500 (0.5 sec)
1207 This module supports multiple cards and autoprobe. Note: The consumer part
1208 is not used with all Envy24 based cards (for example in the MidiMan Delta
1211 Note: The supported board is detected by reading EEPROM or PCI
1212 SSID (if EEPROM isn't available). You can override the
1213 model by passing "model" module option in case that the
1214 driver isn't configured properly or you want to try another
1220 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1221 * MidiMan M Audio Revolution 5.1
1222 * MidiMan M Audio Revolution 7.1
1223 * MidiMan M Audio Audiophile 192
1225 * TerraTec Aureon 5.1 Sky
1226 * TerraTec Aureon 7.1 Space
1227 * TerraTec Aureon 7.1 Universe
1230 * AudioTrak Prodigy 7.1
1231 * AudioTrak Prodigy 7.1 LT
1232 * AudioTrak Prodigy 7.1 XT
1233 * AudioTrak Prodigy 7.1 HIFI
1234 * AudioTrak Prodigy 7.1 HD2
1235 * AudioTrak Prodigy 192
1237 * Albatron K8X800 Pro II
1238 * Chaintech ZNF3-150
1239 * Chaintech ZNF3-250
1246 * Hercules Fortissimo IV
1247 * EGO-SYS WaveTerminal 192M
1249 model - Use the given board model, one of the following:
1250 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1251 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1252 juli, aureon51, aureon71, universe, ap192, k8x800,
1253 phase22, phase28, ms300, av710, se200pci, se90pci,
1254 fortissimo4, sn25p, WT192M
1256 This module supports multiple cards and autoprobe.
1258 Note: The supported board is detected by reading EEPROM or PCI
1259 SSID (if EEPROM isn't available). You can override the
1260 model by passing "model" module option in case that the
1261 driver isn't configured properly or you want to try another
1267 Module for Echoaudio Indigo
1269 This module supports multiple cards.
1270 The driver requires the firmware loader support on kernel.
1275 Module for Echoaudio Indigo DJ
1277 This module supports multiple cards.
1278 The driver requires the firmware loader support on kernel.
1283 Module for Echoaudio Indigo IO
1285 This module supports multiple cards.
1286 The driver requires the firmware loader support on kernel.
1291 Module for AC'97 motherboards from Intel and compatibles.
1292 * Intel i810/810E, i815, i820, i830, i84x, MX440
1293 ICH5, ICH6, ICH7, 6300ESB, ESB2
1294 * SiS 7012 (SiS 735)
1295 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1297 * AMD AMD768, AMD8111
1300 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1301 ac97_quirk - AC'97 workaround for strange hardware
1302 See "AC97 Quirk Option" section below.
1303 buggy_irq - Enable workaround for buggy interrupts on some
1304 motherboards (default yes on nForce chips,
1306 buggy_semaphore - Enable workaround for hardwares with buggy
1307 semaphores (e.g. on some ASUS laptops)
1309 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1310 from the controller chip
1311 (0 = off, 1 = on, -1 = default)
1313 This module supports one chip and autoprobe.
1315 Note: the latest driver supports auto-detection of chip clock.
1316 if you still encounter too fast playback, specify the clock
1317 explicitly via the module option "ac97_clock=41194".
1319 Joystick/MIDI ports are not supported by this driver. If your
1320 motherboard has these devices, use the ns558 or snd-mpu401
1321 modules, respectively.
1323 The power-management is supported.
1325 Module snd-intel8x0m
1326 --------------------
1328 Module for Intel ICH (i8x0) chipset MC97 modems.
1329 * Intel i810/810E, i815, i820, i830, i84x, MX440
1331 * SiS 7013 (SiS 735)
1332 * NVidia NForce, NForce2, NForce2s, NForce3
1336 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1338 This module supports one card and autoprobe.
1340 Note: The default index value of this module is -2, i.e. the first
1343 The power-management is supported.
1345 Module snd-interwave
1346 --------------------
1348 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1349 and other sound cards based on AMD InterWave (tm) chip.
1351 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1352 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1353 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1354 effect - 1 = InterWave effects enable (default 0);
1356 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1358 with isapnp=0, the following options are available:
1360 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1361 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1362 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1363 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1365 This module supports multiple cards, autoprobe and ISA PnP.
1367 Module snd-interwave-stb
1368 ------------------------
1370 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1371 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1372 circuit for extended control of bass, treble and master volume.
1374 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1375 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1376 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1377 effect - 1 = InterWave effects enable (default 0);
1379 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1381 with isapnp=0, the following options are available:
1383 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1384 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1385 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1386 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1387 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1389 This module supports multiple cards, autoprobe and ISA PnP.
1394 Module for Korg 1212 IO PCI card
1396 This module supports multiple cards.
1401 Module for Echoaudio Layla20
1403 This module supports multiple cards.
1404 The driver requires the firmware loader support on kernel.
1409 Module for Echoaudio Layla24
1411 This module supports multiple cards.
1412 The driver requires the firmware loader support on kernel.
1417 Module for Allegro/Maestro3 chips
1419 external_amp - enable external amp (enabled by default)
1420 amp_gpio - GPIO pin number for external amp (0-15) or
1421 -1 for default pin (8 for allegro, 1 for
1424 This module supports autoprobe and multiple chips.
1426 Note: the binding of amplifier is dependent on hardware.
1427 If there is no sound even though all channels are unmuted, try to
1428 specify other gpio connection via amp_gpio option.
1429 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1432 The power-management is supported.
1437 Module for Echoaudio Mia
1439 This module supports multiple cards.
1440 The driver requires the firmware loader support on kernel.
1445 Module for Miro soundcards: miroSOUND PCM 1 pro,
1447 miroSOUND PCM 20 Radio.
1449 port - Port # (0x530,0x604,0xe80,0xf40)
1450 irq - IRQ # (5,7,9,10,11)
1451 dma1 - 1st dma # (0,1,3)
1452 dma2 - 2nd dma # (0,1)
1453 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1454 mpu_irq - MPU-401 irq # (5,7,9,10)
1455 fm_port - FM Port # (0x388)
1456 wss - enable WSS mode
1457 ide - enable onboard ide support
1462 Module for Digigram miXart8 sound cards.
1464 This module supports multiple cards.
1465 Note: One miXart8 board will be represented as 4 alsa cards.
1466 See MIXART.txt for details.
1468 When the driver is compiled as a module and the hotplug firmware
1469 is supported, the firmware data is loaded via hotplug automatically.
1470 Install the necessary firmware files in alsa-firmware package.
1471 When no hotplug fw loader is available, you need to load the
1472 firmware via mixartloader utility in alsa-tools package.
1477 Module for Echoaudio Mona
1479 This module supports multiple cards.
1480 The driver requires the firmware loader support on kernel.
1485 Module for MPU-401 UART devices.
1487 port - port number or -1 (disable)
1488 irq - IRQ number or -1 (disable)
1489 pnp - PnP detection - 0 = disable, 1 = enable (default)
1491 This module supports multiple devices and PnP.
1496 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1499 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1500 irq - IRQ # for MTPAV (7,5, default=7)
1501 hwports - number of supported hardware ports, default=8.
1503 Module supports only 1 card. This module has no enable option.
1508 Module for Ego Systems (ESI) Miditerminal 4140
1510 This module supports multiple devices.
1511 Requires parport (CONFIG_PARPORT).
1516 Module for NeoMagic NM256AV/ZX chips
1518 playback_bufsize - max playback frame size in kB (4-128kB)
1519 capture_bufsize - max capture frame size in kB (4-128kB)
1520 force_ac97 - 0 or 1 (disabled by default)
1521 buffer_top - specify buffer top address
1522 use_cache - 0 or 1 (disabled by default)
1523 vaio_hack - alias buffer_top=0x25a800
1524 reset_workaround - enable AC97 RESET workaround for some laptops
1525 reset_workaround2 - enable extended AC97 RESET workaround for some
1528 This module supports one chip and autoprobe.
1530 The power-management is supported.
1532 Note: on some notebooks the buffer address cannot be detected
1533 automatically, or causes hang-up during initialization.
1534 In such a case, specify the buffer top address explicitly via
1535 the buffer_top option.
1537 Sony F250: buffer_top=0x25a800
1538 Sony F270: buffer_top=0x272800
1539 The driver supports only ac97 codec. It's possible to force
1540 to initialize/use ac97 although it's not detected. In such a
1541 case, use force_ac97=1 option - but *NO* guarantee whether it
1544 Note: The NM256 chip can be linked internally with non-AC97
1545 codecs. This driver supports only the AC97 codec, and won't work
1546 with machines with other (most likely CS423x or OPL3SAx) chips,
1547 even though the device is detected in lspci. In such a case, try
1548 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1549 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1550 and proper hardware parameters in the case without ISA PnP.
1552 Note: some laptops need a workaround for AC97 RESET. For the
1553 known hardware like Dell Latitude LS and Sony PCG-F305, this
1554 workaround is enabled automatically. For other laptops with a
1555 hard freeze, you can try reset_workaround=1 option.
1557 Note: Dell Latitude CSx laptops have another problem regarding
1558 AC97 RESET. On these laptops, reset_workaround2 option is
1559 turned on as default. This option is worth to try if the
1560 previous reset_workaround option doesn't help.
1562 Note: This driver is really crappy. It's a porting from the
1563 OSS driver, which is a result of black-magic reverse engineering.
1564 The detection of codec will fail if the driver is loaded *after*
1565 X-server as described above. You might be able to force to load
1566 the module, but it may result in hang-up. Hence, make sure that
1567 you load this module *before* X if you encounter this kind of
1573 Module for Yamaha OPL3-SA2/SA3 sound cards.
1575 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1577 with isapnp=0, the following options are available:
1579 port - control port # for OPL3-SA chip (0x370)
1580 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1581 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1582 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1583 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1584 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1585 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1586 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1588 This module supports multiple cards and ISA PnP. It does not support
1589 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1591 The power-management is supported.
1593 Module snd-opti92x-ad1848
1594 -------------------------
1596 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1597 Module works with OAK Mozart cards as well.
1599 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1601 with isapnp=0, the following options are available:
1603 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1604 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1605 fm_port - port # for OPL3 device (0x388)
1606 irq - IRQ # for WSS chip (5,7,9,10,11)
1607 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1608 dma1 - first DMA # for WSS chip (0,1,3)
1610 This module supports only one card, autoprobe and PnP.
1612 Module snd-opti92x-cs4231
1613 -------------------------
1615 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1617 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1619 with isapnp=0, the following options are available:
1621 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1622 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1623 fm_port - port # for OPL3 device (0x388)
1624 irq - IRQ # for WSS chip (5,7,9,10,11)
1625 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1626 dma1 - first DMA # for WSS chip (0,1,3)
1627 dma2 - second DMA # for WSS chip (0,1,3)
1629 This module supports only one card, autoprobe and PnP.
1634 Module for sound cards based on OPTi 82c93x chips.
1636 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1638 with isapnp=0, the following options are available:
1640 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1641 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1642 fm_port - port # for OPL3 device (0x388)
1643 irq - IRQ # for WSS chip (5,7,9,10,11)
1644 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1645 dma1 - first DMA # for WSS chip (0,1,3)
1646 dma2 - second DMA # for WSS chip (0,1,3)
1648 This module supports only one card, autoprobe and PnP.
1653 Module for sound cards based on the C-Media CMI8788 chip:
1655 * AuzenTech X-Meridian
1657 * Club3D Theatron DTS
1659 * Razer Barracuda AC-1
1662 This module supports autoprobe and multiple cards.
1667 Module for internal PC-Speaker.
1669 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1671 This module supports system beeps, some kind of PCM playback and
1672 even a few mixer controls.
1677 Module for Digigram PCXHR boards
1679 This module supports multiple cards.
1681 Module snd-portman2x4
1682 ---------------------
1684 Module for Midiman Portman 2x4 parallel port MIDI interface
1686 This module supports multiple cards.
1688 Module snd-powermac (on ppc only)
1689 ---------------------------------
1691 Module for PowerMac, iMac and iBook on-board soundchips
1693 enable_beep - enable beep using PCM (enabled as default)
1695 Module supports autoprobe a chip.
1697 Note: the driver may have problems regarding endianess.
1699 The power-management is supported.
1701 Module snd-pxa2xx-ac97 (on arm only)
1702 ------------------------------------
1704 Module for AC97 driver for the Intel PXA2xx chip
1706 For ARM architecture only.
1708 The power-management is supported.
1713 Module for Conexant Riptide chip
1715 joystick_port - Joystick port # (default: 0x200)
1716 mpu_port - MPU401 port # (default: 0x330)
1717 opl3_port - OPL3 port # (default: 0x388)
1719 This module supports multiple cards.
1720 The driver requires the firmware loader support on kernel.
1721 You need to install the firmware file "riptide.hex" to the standard
1722 firmware path (e.g. /lib/firmware).
1727 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1728 Prodif96 and Prodif Gold) sound cards.
1730 This module supports multiple cards.
1735 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1737 This module supports multiple cards.
1742 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1744 precise_ptr - Enable precise pointer (doesn't work reliably).
1747 This module supports multiple cards.
1749 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1750 module did formerly. It will allocate the buffers in advance
1751 when any RME9652 cards are found. To make the buffer
1752 allocation sure, load snd-page-alloc module in the early
1753 stage of boot sequence. See "Early Buffer Allocation"
1756 Module snd-sa11xx-uda1341 (on arm only)
1757 ---------------------------------------
1759 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1761 Module supports only one card.
1762 Module has no enable and index options.
1764 The power-management is supported.
1769 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1773 port - port # for SB DSP chip (0x220,0x240,0x260)
1774 irq - IRQ # for SB DSP chip (5,7,9,10)
1775 dma8 - DMA # for SB DSP chip (1,3)
1777 This module supports multiple cards and autoprobe.
1779 The power-management is supported.
1781 Module snd-sb16 and snd-sbawe
1782 -----------------------------
1784 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1785 SoundBlaster AWE 32 (PnP),
1786 SoundBlaster AWE 64 PnP
1788 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1789 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1790 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1792 with isapnp=0, the following options are available:
1794 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1795 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1796 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1797 (snd-sbawe module only)
1798 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1799 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1800 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1802 This module supports multiple cards, autoprobe and ISA PnP.
1804 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1805 disable 16bit DMA with dma16 = -1 module parameter.
1806 Also, all Sound Blaster 16 type cards can operate in 16-bit
1807 half duplex mode through 8-bit DMA channel by disabling their
1810 The power-management is supported.
1815 Module for Gallant SC-6000 soundcard.
1817 port - Port # (0x220 or 0x240)
1818 mss_port - MSS Port # (0x530 or 0xe80)
1819 irq - IRQ # (5,7,9,10,11)
1820 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1823 This module supports multiple cards.
1825 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1830 Module for Aztech Sound Galaxy sound card.
1832 sbport - Port # for SB16 interface (0x220,0x240)
1833 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1834 irq - IRQ # (7,9,10,11)
1837 This module supports multiple cards.
1839 The power-management is supported.
1844 Module for ENSONIQ SoundScape PnP cards.
1846 port - Port # (PnP setup)
1847 wss_port - WSS Port # (PnP setup)
1848 irq - IRQ # (PnP setup)
1849 mpu_irq - MPU-401 IRQ # (PnP setup)
1850 dma - DMA # (PnP setup)
1851 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1853 This module supports multiple cards. ISA PnP must be enabled.
1854 You need sscape_ctl tool in alsa-tools package for loading
1857 Module snd-sun-amd7930 (on sparc only)
1858 --------------------------------------
1860 Module for AMD7930 sound chips found on Sparcs.
1862 This module supports multiple cards.
1864 Module snd-sun-cs4231 (on sparc only)
1865 -------------------------------------
1867 Module for CS4231 sound chips found on Sparcs.
1869 This module supports multiple cards.
1871 Module snd-sun-dbri (on sparc only)
1872 -----------------------------------
1874 Module for DBRI sound chips found on Sparcs.
1876 This module supports multiple cards.
1878 Module snd-wavefront
1879 --------------------
1881 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1883 use_cs4232_midi - Use CS4232 MPU-401 interface
1884 (inaccessibly located inside your computer)
1885 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1887 with isapnp=0, the following options are available:
1889 cs4232_pcm_port - Port # for CS4232 PCM interface.
1890 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1891 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1892 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1893 ics2115_port - Port # for ICS2115
1894 ics2115_irq - IRQ # for ICS2115
1895 fm_port - FM OPL-3 Port #
1896 dma1 - DMA1 # for CS4232 PCM interface.
1897 dma2 - DMA2 # for CS4232 PCM interface.
1899 The below are options for wavefront_synth features:
1900 wf_raw - Assume that we need to boot the OS (default:no)
1901 If yes, then during driver loading, the state of the board is
1902 ignored, and we reset the board and load the firmware anyway.
1903 fx_raw - Assume that the FX process needs help (default:yes)
1904 If false, we'll leave the FX processor in whatever state it is
1905 when the driver is loaded. The default is to download the
1906 microprogram and associated coefficients to set it up for
1907 "default" operation, whatever that means.
1908 debug_default - Debug parameters for card initialization
1909 wait_usecs - How long to wait without sleeping, usecs
1911 This magic number seems to give pretty optimal throughput
1912 based on my limited experimentation.
1913 If you want to play around with it and find a better value, be
1914 my guest. Remember, the idea is to get a number that causes us
1915 to just busy wait for as many WaveFront commands as possible,
1916 without coming up with a number so large that we hog the whole
1918 Specifically, with this number, out of about 134,000 status
1919 waits, only about 250 result in a sleep.
1920 sleep_interval - How long to sleep when waiting for reply
1922 sleep_tries - How many times to try sleeping during a wait
1924 ospath - Pathname to processed ICS2115 OS firmware
1925 (default:wavefront.os)
1926 The path name of the ISC2115 OS firmware. In the recent
1927 version, it's handled via firmware loader framework, so it
1928 must be installed in the proper path, typically,
1930 reset_time - How long to wait for a reset to take effect
1932 ramcheck_time - How many seconds to wait for the RAM test
1934 osrun_time - How many seconds to wait for the ICS2115 OS
1937 This module supports multiple cards and ISA PnP.
1939 Note: the firmware file "wavefront.os" was located in the earlier
1940 version in /etc. Now it's loaded via firmware loader, and
1941 must be in the proper firmware path, such as /lib/firmware.
1942 Copy (or symlink) the file appropriately if you get an error
1943 regarding firmware downloading after upgrading the kernel.
1945 Module snd-sonicvibes
1946 ---------------------
1948 Module for S3 SonicVibes PCI sound cards.
1949 * PINE Schubert 32 PCI
1951 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1952 - SoundCard must have onboard SRAM for this.
1953 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1955 This module supports multiple cards and autoprobe.
1957 Module snd-serial-u16550
1958 ------------------------
1960 Module for UART16550A serial MIDI ports.
1962 port - port # for UART16550A chip
1963 irq - IRQ # for UART16550A chip, -1 = poll mode
1964 speed - speed in bauds (9600,19200,38400,57600,115200)
1966 base - base for divisor in bauds (57600,115200,230400,460800)
1968 outs - number of MIDI ports in a serial port (1-4)
1970 adaptor - Type of adaptor.
1971 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1972 3 = MS-124W M/B, 4 = Generic
1974 This module supports multiple cards. This module does not support autoprobe
1975 thus the main port must be specified!!! Other options are optional.
1980 Module for Trident 4DWave DX/NX sound cards.
1981 * Best Union Miss Melody 4DWave PCI
1983 * Warpspeed ONSpeed 4DWave PCI
1986 * CHIC True Sound 4Dwave
1987 * Shark Predator4D-PCI
1988 * Jaton SonicWave 4D
1989 * SiS SI7018 PCI Audio
1990 * Hoontech SoundTrack Digital 4DWave NX
1992 pcm_channels - max channels (voices) reserved for PCM
1993 wavetable_size - max wavetable size in kB (4-?kb)
1995 This module supports multiple cards and autoprobe.
1997 The power-management is supported.
1999 Module snd-usb-audio
2000 --------------------
2002 Module for USB audio and USB MIDI devices.
2004 vid - Vendor ID for the device (optional)
2005 pid - Product ID for the device (optional)
2006 nrpacks - Max. number of packets per URB (default: 8)
2007 async_unlink - Use async unlink mode (default: yes)
2008 device_setup - Device specific magic number (optional)
2009 - Influence depends on the device
2011 ignore_ctl_error - Ignore any USB-controller regarding mixer
2012 interface (default: no)
2014 This module supports multiple devices, autoprobe and hotplugging.
2016 NB: nrpacks parameter can be modified dynamically via sysfs.
2017 Don't put the value over 20. Changing via sysfs has no sanity
2019 NB: async_unlink=0 would cause Oops. It remains just for
2020 debugging purpose (if any).
2021 NB: ignore_ctl_error=1 may help when you get an error at accessing
2022 the mixer element such as URB error -22. This happens on some
2023 buggy USB device or the controller.
2025 Module snd-usb-caiaq
2026 --------------------
2028 Module for caiaq UB audio interfaces,
2029 * Native Instruments RigKontrol2
2030 * Native Instruments Kore Controller
2031 * Native Instruments Audio Kontrol 1
2032 * Native Instruments Audio 8 DJ
2034 This module supports multiple devices, autoprobe and hotplugging.
2036 Module snd-usb-usx2y
2037 --------------------
2039 Module for Tascam USB US-122, US-224 and US-428 devices.
2041 This module supports multiple devices, autoprobe and hotplugging.
2043 Note: you need to load the firmware via usx2yloader utility included
2044 in alsa-tools and alsa-firmware packages.
2049 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2050 8233A, 8233C, 8235, 8237 (south) bridge.
2052 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2054 joystick - Enable joystick (default off) [VIA686A/686B only]
2055 ac97_clock - AC'97 codec clock base (default 48000Hz)
2056 dxs_support - support DXS channels,
2057 0 = auto (default), 1 = enable, 2 = disable,
2058 3 = 48k only, 4 = no VRA, 5 = enable any sample
2059 rate and different sample rates on different
2061 [VIA8233/C, 8235, 8237 only]
2062 ac97_quirk - AC'97 workaround for strange hardware
2063 See "AC97 Quirk Option" section below.
2065 This module supports one chip and autoprobe.
2067 Note: on some SMP motherboards like MSI 694D the interrupts might
2068 not be generated properly. In such a case, please try to
2069 set the SMP (or MPS) version on BIOS to 1.1 instead of
2070 default value 1.4. Then the interrupt number will be
2071 assigned under 15. You might also upgrade your BIOS.
2073 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2074 channels as the first PCM. On these channels, up to 4
2075 streams can be played at the same time, and the controller
2076 can perform sample rate conversion with separate rates for
2078 As default (dxs_support = 0), 48k fixed rate is chosen
2079 except for the known devices since the output is often
2080 noisy except for 48k on some mother boards due to the
2082 Please try once dxs_support=5 and if it works on other
2083 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2084 know the PCI subsystem vendor/device id's (output of
2086 If dxs_support=5 does not work, try dxs_support=4; if it
2087 doesn't work too, try dxs_support=1. (dxs_support=1 is
2088 usually for old motherboards. The correct implemented
2089 board should work with 4 or 5.) If it still doesn't
2090 work and the default setting is ok, dxs_support=3 is the
2091 right choice. If the default setting doesn't work at all,
2092 try dxs_support=2 to disable the DXS channels.
2093 In any cases, please let us know the result and the
2094 subsystem vendor/device ids. See "Links and Addresses"
2097 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2098 additionally. The mpu_port option is for VIA686 chips only.
2100 The power-management is supported.
2102 Module snd-via82xx-modem
2103 ------------------------
2105 Module for VIA82xx AC97 modem
2107 ac97_clock - AC'97 codec clock base (default 48000Hz)
2109 This module supports one card and autoprobe.
2111 Note: The default index value of this module is -2, i.e. the first
2114 The power-management is supported.
2119 Module for virtual rawmidi devices.
2120 This module creates virtual rawmidi devices which communicate
2121 to the corresponding ALSA sequencer ports.
2123 midi_devs - MIDI devices # (1-4, default=4)
2125 This module supports multiple cards.
2130 Module for sound cards based on the Asus AV100/AV200 chips,
2131 i.e., Xonar D1, DX, D2, D2X and HDAV1.3 (Deluxe).
2133 This module supports autoprobe and multiple cards.
2138 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2140 mic - Enable Microphone on V222 Mic (NYI)
2141 ibl - Capture IBL size. (default = 0, minimum size)
2143 This module supports multiple cards.
2145 When the driver is compiled as a module and the hotplug firmware
2146 is supported, the firmware data is loaded via hotplug automatically.
2147 Install the necessary firmware files in alsa-firmware package.
2148 When no hotplug fw loader is available, you need to load the
2149 firmware via vxloader utility in alsa-tools package. To invoke
2150 vxloader automatically, add the following to /etc/modprobe.conf
2152 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2154 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2155 /etc/modules.conf, instead.)
2156 IBL size defines the interrupts period for PCM. The smaller size
2157 gives smaller latency but leads to more CPU consumption, too.
2158 The size is usually aligned to 126. As default (=0), the smallest
2159 size is chosen. The possible IBL values can be found in
2160 /proc/asound/cardX/vx-status proc file.
2162 The power-management is supported.
2167 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2169 ibl - Capture IBL size. (default = 0, minimum size)
2171 This module supports multiple cards. The module is compiled only when
2172 PCMCIA is supported on kernel.
2174 With the older 2.6.x kernel, to activate the driver via the card
2175 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2176 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2177 longer require a config file.
2179 When the driver is compiled as a module and the hotplug firmware
2180 is supported, the firmware data is loaded via hotplug automatically.
2181 Install the necessary firmware files in alsa-firmware package.
2182 When no hotplug fw loader is available, you need to load the
2183 firmware via vxloader utility in alsa-tools package.
2185 About capture IBL, see the description of snd-vx222 module.
2187 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2190 The power-management is supported.
2195 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2197 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2198 1 (auto-detect for YMF744/754 only)
2199 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2200 1 (auto-detect for YMF744/754 only)
2201 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2203 rear_switch - enable shared rear/line-in switch (bool)
2205 This module supports autoprobe and multiple chips.
2207 The power-management is supported.
2209 Module snd-pdaudiocf
2210 --------------------
2212 Module for Sound Core PDAudioCF sound card.
2214 The power-management is supported.
2220 The ac97_quirk option is used to enable/override the workaround for
2221 specific devices on drivers for on-board AC'97 controllers like
2222 snd-intel8x0. Some hardware have swapped output pins between Master
2223 and Headphone, or Surround (thanks to confusion of AC'97
2224 specifications from version to version :-)
2226 The driver provides the auto-detection of known problematic devices,
2227 but some might be unknown or wrongly detected. In such a case, pass
2228 the proper value with this option.
2230 The following strings are accepted:
2231 - default Don't override the default setting
2232 - none Disable the quirk
2233 - hp_only Bind Master and Headphone controls as a single control
2234 - swap_hp Swap headphone and master controls
2235 - swap_surround Swap master and surround controls
2236 - ad_sharing For AD1985, turn on OMS bit and use headphone
2237 - alc_jack For ALC65x, turn on the jack sense mode
2238 - inv_eapd Inverted EAPD implementation
2239 - mute_led Bind EAPD bit for turning on/off mute LED
2241 For backward compatibility, the corresponding integer value -1, 0,
2242 ... are accepted, too.
2244 For example, if "Master" volume control has no effect on your device
2245 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2248 Configuring Non-ISAPNP Cards
2249 ============================
2251 When the kernel is configured with ISA-PnP support, the modules
2252 supporting the isapnp cards will have module options "isapnp".
2253 If this option is set, *only* the ISA-PnP devices will be probed.
2254 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2255 together with the proper i/o and irq configuration.
2257 When the kernel is configured without ISA-PnP support, isapnp option
2258 will be not built in.
2261 Module Autoloading Support
2262 ==========================
2264 The ALSA drivers can be loaded automatically on demand by defining
2265 module aliases. The string 'snd-card-%1' is requested for ALSA native
2266 devices where %i is sound card number from zero to seven.
2268 To auto-load an ALSA driver for OSS services, define the string
2269 'sound-slot-%i' where %i means the slot number for OSS, which
2270 corresponds to the card index of ALSA. Usually, define this
2271 as the same card module.
2273 An example configuration for a single emu10k1 card is like below:
2274 ----- /etc/modprobe.conf
2275 alias snd-card-0 snd-emu10k1
2276 alias sound-slot-0 snd-emu10k1
2277 ----- /etc/modprobe.conf
2279 The available number of auto-loaded sound cards depends on the module
2280 option "cards_limit" of snd module. As default it's set to 1.
2281 To enable the auto-loading of multiple cards, specify the number of
2282 sound cards in that option.
2284 When multiple cards are available, it'd better to specify the index
2285 number for each card via module option, too, so that the order of
2286 cards is kept consistent.
2288 An example configuration for two sound cards is like below:
2290 ----- /etc/modprobe.conf
2292 options snd cards_limit=2
2293 alias snd-card-0 snd-interwave
2294 alias snd-card-1 snd-ens1371
2295 options snd-interwave index=0
2296 options snd-ens1371 index=1
2298 alias sound-slot-0 snd-interwave
2299 alias sound-slot-1 snd-ens1371
2300 ----- /etc/modprobe.conf
2302 In this example, the interwave card is always loaded as the first card
2303 (index 0) and ens1371 as the second (index 1).
2305 Alternative (and new) way to fixate the slot assignment is to use
2306 "slots" option of snd module. In the case above, specify like the
2309 options snd slots=snd-interwave,snd-ens1371
2311 Then, the first slot (#0) is reserved for snd-interwave driver, and
2312 the second (#1) for snd-ens1371. You can omit index option in each
2313 driver if slots option is used (although you can still have them at
2314 the same time as long as they don't conflict).
2316 The slots option is especially useful for avoiding the possible
2317 hot-plugging and the resultant slot conflict. For example, in the
2318 case above again, the first two slots are already reserved. If any
2319 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2320 snd-ens1371, it will be assigned to the third or later slot.
2322 When a module name is given with '!', the slot will be given for any
2323 modules but that name. For example, "slots=!snd-pcsp" will reserve
2324 the first slot for any modules but snd-pcsp.
2327 ALSA PCM devices to OSS devices mapping
2328 =======================================
2330 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2331 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2332 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2333 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2334 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2335 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2336 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2337 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2338 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2340 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2341 sound card number and second means device number. The ALSA devices
2342 have either 'c' or 'p' suffix indicating the direction, capture and
2343 playback, respectively.
2345 Please note that the device mapping above may be varied via the module
2346 options of snd-pcm-oss module.
2349 Proc interfaces (/proc/asound)
2350 ==============================
2352 /proc/asound/card#/pcm#[cp]/oss
2353 -------------------------------
2354 String "erase" - erase all additional informations about OSS applications
2355 String "<app_name> <fragments> <fragment_size> [<options>]"
2357 <app_name> - name of application with (higher priority) or without path
2358 <fragments> - number of fragments or zero if auto
2359 <fragment_size> - size of fragment in bytes or zero if auto
2360 <options> - optional parameters
2361 - disable the application tries to open a pcm device for
2362 this channel but does not want to use it.
2363 (Cause a bug or mmap needs)
2364 It's good for Quake etc...
2365 - direct don't use plugins
2366 - block force block mode (rvplayer)
2367 - non-block force non-block mode
2368 - whole-frag write only whole fragments (optimization affecting
2370 - no-silence do not fill silence ahead to avoid clicks
2371 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2372 instead of filled blocks
2374 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2375 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2376 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2379 Early Buffer Allocation
2380 =======================
2382 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2383 sometimes it's too late to find such spaces when the driver module is
2384 actually loaded due to memory fragmentation. You can pre-allocate the
2385 PCM buffers by loading snd-page-alloc module and write commands to its
2386 proc file in prior, for example, in the early boot stage like
2387 /etc/init.d/*.local scripts.
2389 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2390 usage of page allocation. In writing, you can send the following
2391 commands to the snd-page-alloc driver:
2393 - add VENDOR DEVICE MASK SIZE BUFFERS
2395 VENDOR and DEVICE are PCI vendor and device IDs. They take
2396 integer numbers (0x prefix is needed for the hex).
2397 MASK is the PCI DMA mask. Pass 0 if not restricted.
2398 SIZE is the size of each buffer to allocate. You can pass
2399 k and m suffix for KB and MB. The max number is 16MB.
2400 BUFFERS is the number of buffers to allocate. It must be greater
2401 than 0. The max number is 4.
2405 This will erase the all pre-allocated buffers which are not in
2412 ALSA project homepage
2413 http://www.alsa-project.org
2415 ALSA Bug Tracking System
2416 https://bugtrack.alsa-project.org/bugs/
2419 mailto:alsa-devel@alsa-project.org
projects / linux-2.6-omap-h63xx.git / blob