2 Advanced Linux Sound Architecture - Driver
3 ==========================================
10 To enable ALSA support you need at least to build the kernel with
11 primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,
12 you don't have to choose any of the OSS modules.
14 Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
15 PCM supports if you want to run OSS applications with ALSA.
17 If you want to support the WaveTable functionality on cards such as
18 SB Live! then you need to enable "Sequencer support"
19 (CONFIG_SND_SEQUENCER).
21 To make ALSA debug messages more verbose, enable the "Verbose printk"
22 and "Debug" options. To check for memory leaks, turn on "Debug memory"
23 too. "Debug detection" will add checks for the detection of cards.
25 Please note that all the ALSA ISA drivers support the Linux isapnp API
26 (if the card supports ISA PnP). You don't need to configure the cards
33 This depends on your distribution, but normally you use the /dev/MAKEDEV
34 script to create the necessary device nodes. On some systems you use a
35 script named 'snddevices'.
41 The user can load modules with options. If the module supports more than
42 one card and you have more than one card of the same type then you can
43 specify multiple values for the option separated by commas.
45 Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
50 The core ALSA module. It is used by all ALSA card drivers.
51 It takes the following options which have global effects.
53 major - major number for sound driver
56 - limiting card index for auto-loading (1-8)
58 - For auto-loading more than one card, specify this
59 option together with snd-card-X aliases.
60 slots - Reserve the slot index for the given driver.
61 This option takes multiple strings.
62 See "Module Autoloading Support" section for details.
67 The PCM OSS emulation module.
68 This module takes options which change the mapping of devices.
70 dsp_map - PCM device number maps assigned to the 1st OSS device.
72 adsp_map - PCM device number maps assigned to the 2st OSS device.
75 - Don't block opening busy PCM devices. Default: 1
77 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
78 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
79 to PCM #0 of the card #0.
80 For changing the second or later card, specify the option with
81 commas, such like "dsp_map=0,1".
83 nonblock_open option is used to change the behavior of the PCM
84 regarding opening the device. When this option is non-zero,
85 opening a busy OSS PCM device won't be blocked but return
86 immediately with EAGAIN (just like O_NONBLOCK flag).
91 This module takes options which change the mapping of devices.
92 similar to those of the snd-pcm-oss module.
94 midi_map - MIDI device number maps assigned to the 1st OSS device.
96 amidi_map - MIDI device number maps assigned to the 2st OSS device.
99 Common parameters for top sound card modules
100 --------------------------------------------
102 Each of top level sound card module takes the following options.
104 index - index (slot #) of sound card
105 - Values: 0 through 31 or negative
106 - If nonnegative, assign that index number
107 - if negative, interpret as a bitmask of permissible
108 indices; the first free permitted index is assigned
110 id - card ID (identifier or name)
111 - Can be up to 15 characters long
112 - Default: the card type
113 - A directory by this name is created under /proc/asound/
114 containing information about the card
115 - This ID can be used instead of the index number in
118 - Default: enabled, for PCI and ISA PnP cards
123 Module for AdLib FM cards.
125 port - port # for OPL chip
127 This module supports multiple cards. It does not support autoprobe, so
128 the port must be specified. For actual AdLib FM cards it will be 0x388.
129 Note that this card does not have PCM support and no mixer; only FM
132 Make sure you have "sbiload" from the alsa-tools package available and,
133 after loading the module, find out the assigned ALSA sequencer port
134 number through "sbiload -l". Example output:
136 Port Client name Port name
137 64:0 OPL2 FM synth OPL2 FM Port
139 Load the std.sb and drums.sb patches also supplied by sbiload:
141 sbiload -p 64:0 std.sb drums.sb
143 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
144 instead. To have the card produce sound, use aplaymidi from alsa-utils:
146 aplaymidi -p 64:0 foo.mid
151 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
153 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
155 This module supports multiple cards, autoprobe and PnP.
160 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
162 port - port # for AD1848 chip
163 irq - IRQ # for AD1848 chip
164 dma1 - DMA # for AD1848 chip (0,1,3)
166 This module supports multiple cards. It does not support autoprobe
167 thus main port must be specified!!! Other ports are optional.
169 The power-management is supported.
174 Module for Analog Devices AD1889 chips.
176 ac97_quirk - AC'97 workaround for strange hardware
177 See the description of intel8x0 module for details.
179 This module supports multiple cards.
184 Module for ALi M5451 PCI chip.
186 pcm_channels - Number of hardware channels assigned for PCM
187 spdif - Support SPDIF I/O
190 This module supports one chip and autoprobe.
192 The power-management is supported.
197 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
199 This module supports multiple cards, autoprobe and PnP.
201 The power-management is supported.
206 Module for Avance Logic ALS300 and ALS300+
208 This module supports multiple cards.
210 The power-management is supported.
215 Module for sound cards based on Avance Logic ALS4000 PCI chip.
217 joystick_port - port # for legacy joystick support.
218 0 = disabled (default), 1 = auto-detect
220 This module supports multiple cards, autoprobe and PnP.
222 The power-management is supported.
227 Module for ATI IXP 150/200/250/400 AC97 controllers.
229 ac97_clock - AC'97 clock (default = 48000)
230 ac97_quirk - AC'97 workaround for strange hardware
231 See "AC97 Quirk Option" section below.
232 ac97_codec - Workaround to specify which AC'97 codec
233 instead of probing. If this works for you
234 file a bug with your `lspci -vn` output.
236 -1 -- Default behavior.
237 0-2 -- Use the specified codec.
238 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
240 This module supports one card and autoprobe.
242 ATI IXP has two different methods to control SPDIF output. One is
243 over AC-link and another is over the "direct" SPDIF output. The
244 implementation depends on the motherboard, and you'll need to
245 choose the correct one via spdif_aclink module option.
247 The power-management is supported.
249 Module snd-atiixp-modem
250 -----------------------
252 Module for ATI IXP 150/200/250 AC97 modem controllers.
254 This module supports one card and autoprobe.
256 Note: The default index value of this module is -2, i.e. the first
259 The power-management is supported.
261 Module snd-au8810, snd-au8820, snd-au8830
262 -----------------------------------------
264 Module for Aureal Vortex, Vortex2 and Advantage device.
266 pcifix - Control PCI workarounds
267 0 = Disable all workarounds
268 1 = Force the PCI latency of the Aureal card to 0xff
269 2 = Force the Extend PCI#2 Internal Master for Efficient
270 Handling of Dummy Requests on the VIA KT133 AGP Bridge
271 3 = Force both settings
272 255 = Autodetect what is required (default)
274 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
275 EQ, mpu401, gameport. A3D and wavetable support are still in development.
276 Development and reverse engineering work is being coordinated at
277 http://savannah.nongnu.org/projects/openvortex/
278 SPDIF output has a copy of the AC97 codec output, unless you use the
279 "spdif" pcm device, which allows raw data passthru.
280 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
283 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
284 control correctly. If you have problems regarding this, try
285 another ALSA compliant mixer (alsamixer works).
290 Module for Audiowerk2 sound card
292 This module supports multiple cards.
297 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
299 This module supports multiple cards, PnP and autoprobe.
301 The power-management is supported.
306 Module for sound cards based on Aztech AZF3328 PCI chip.
308 joystick - Enable joystick (default off)
310 This module supports multiple cards.
315 Module for video cards based on Bt87x chips.
317 digital_rate - Override the default digital rate (Hz)
318 load_all - Load the driver even if the card model isn't known
320 This module supports multiple cards.
322 Note: The default index value of this module is -2, i.e. the first
328 Module for Creative Audigy LS and SB Live 24bit
330 This module supports multiple cards.
336 Module for sound cards based on C-Media CMI8330 ISA chips.
338 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
340 with isapnp=0, the following options are available:
342 wssport - port # for CMI8330 chip (WSS)
343 wssirq - IRQ # for CMI8330 chip (WSS)
344 wssdma - first DMA # for CMI8330 chip (WSS)
345 sbport - port # for CMI8330 chip (SB16)
346 sbirq - IRQ # for CMI8330 chip (SB16)
347 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
348 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
350 This module supports multiple cards and autoprobe.
352 The power-management is supported.
357 Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
359 mpu_port - port address of MIDI interface (8338 only):
360 0x300,0x310,0x320,0x330 = legacy port,
361 0 = disable (default)
362 fm_port - port address of OPL-3 FM synthesizer (8x38 only):
364 1 = integrated PCI port (default on 8738),
366 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
368 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
370 This module supports autoprobe and multiple cards.
372 The power-management is supported.
377 Module for sound cards based on CS4231 ISA chips.
379 port - port # for CS4231 chip
380 mpu_port - port # for MPU-401 UART (optional), -1 = disable
381 irq - IRQ # for CS4231 chip
382 mpu_irq - IRQ # for MPU-401 UART
383 dma1 - first DMA # for CS4231 chip
384 dma2 - second DMA # for CS4231 chip
386 This module supports multiple cards. This module does not support autoprobe
387 thus main port must be specified!!! Other ports are optional.
389 The power-management is supported.
394 Module for sound cards based on CS4232/CS4232A ISA chips.
396 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
398 with isapnp=0, the following options are available:
400 port - port # for CS4232 chip (PnP setup - 0x534)
401 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
402 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
403 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
404 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
405 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
406 dma1 - first DMA # for CS4232 chip (0,1,3)
407 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
409 This module supports multiple cards. This module does not support autoprobe
410 (if ISA PnP is not used) thus main port must be specified!!! Other ports are
413 The power-management is supported.
418 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
419 CS4238B/CS4239 ISA chips.
421 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
423 with isapnp=0, the following options are available:
425 port - port # for CS4236 chip (PnP setup - 0x534)
426 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
427 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
428 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
429 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
430 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
431 dma1 - first DMA # for CS4236 chip (0,1,3)
432 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
434 This module supports multiple cards. This module does not support autoprobe
435 (if ISA PnP is not used) thus main port and control port must be
436 specified!!! Other ports are optional.
438 The power-management is supported.
443 Module for Cirrus Logic CS4281 soundchip.
445 dual_codec - Secondary codec ID (0 = disable, default)
447 This module supports multiple cards.
449 The power-management is supported.
454 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
455 CS4624/CS4630/CS4280 PCI chips.
457 external_amp - Force to enable external amplifier.
458 thinkpad - Force to enable Thinkpad's CLKRUN control.
459 mmap_valid - Support OSS mmap mode (default = 0).
461 This module supports multiple cards and autoprobe.
462 Usually external amp and CLKRUN controls are detected automatically
463 from PCI sub vendor/device ids. If they don't work, give the options
466 The power-management is supported.
471 Module for Cyrix/NatSemi Geode 5530 chip.
473 Module snd-cs5535audio
474 ----------------------
476 Module for multifunction CS5535 companion PCI device
478 The power-management is supported.
483 Module for Echoaudio Darla20
485 This module supports multiple cards.
486 The driver requires the firmware loader support on kernel.
491 Module for Echoaudio Darla24
493 This module supports multiple cards.
494 The driver requires the firmware loader support on kernel.
499 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
502 This module supports multiple cards. This module is enabled only with
505 The power-management is supported.
510 Module for the dummy sound card. This "card" doesn't do any output
511 or input, but you may use this module for any application which
512 requires a sound card (like RealPlayer).
514 The power-management is supported.
519 Module for Echoaudio 3G cards (Gina3G/Layla3G)
521 This module supports multiple cards.
522 The driver requires the firmware loader support on kernel.
527 Module for EMU10K1/EMU10k2 based PCI sound cards.
528 * Sound Blaster Live!
529 * Sound Blaster PCI 512
530 * Emu APS (partially supported)
531 * Sound Blaster Audigy
533 extin - bitmap of available external inputs for FX8010 (see bellow)
534 extout - bitmap of available external outputs for FX8010 (see bellow)
535 seq_ports - allocated sequencer ports (4 by default)
536 max_synth_voices - limit of voices used for wavetable (64 by default)
537 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
538 given in MB unit. Default value is 128.
539 enable_ir - enable IR
541 This module supports multiple cards and autoprobe.
543 Input & Output configurations [extin/extout]
544 * Creative Card wo/Digital out [0x0003/0x1f03]
545 * Creative Card w/Digital out [0x0003/0x1f0f]
546 * Creative Card w/Digital CD in [0x000f/0x1f0f]
547 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
548 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
549 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
550 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
551 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
552 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
553 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
554 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
555 * Creative Card all ins and outs [0x3fff/0x7fff]
557 The power-management is supported.
562 Module for Creative Emu10k1X (SB Live Dell OEM version)
564 This module supports multiple cards.
569 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
570 * SoundBlaster PCI 64
571 * SoundBlaster PCI 128
573 joystick - Enable joystick (default off)
575 This module supports multiple cards and autoprobe.
577 The power-management is supported.
582 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
583 * SoundBlaster PCI 64
584 * SoundBlaster PCI 128
585 * SoundBlaster Vibra PCI
587 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
588 0 = disable (default), 1 = auto-detect
590 This module supports multiple cards and autoprobe.
592 The power-management is supported.
597 Module for sound cards based on ESS ES968 chip (PnP only).
599 This module supports multiple cards, PnP and autoprobe.
601 The power-management is supported.
606 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
608 port - port # for ES-1688 chip (0x220,0x240,0x260)
609 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
610 irq - IRQ # for ES-1688 chip (5,7,9,10)
611 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
612 dma8 - DMA # for ES-1688 chip (0,1,3)
614 This module supports multiple cards and autoprobe (without MPU-401 port).
619 Module for ESS AudioDrive ES-18xx sound cards.
621 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
623 with isapnp=0, the following options are available:
625 port - port # for ES-18xx chip (0x220,0x240,0x260)
626 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
627 fm_port - port # for FM (optional, not used)
628 irq - IRQ # for ES-18xx chip (5,7,9,10)
629 dma1 - first DMA # for ES-18xx chip (0,1,3)
630 dma2 - first DMA # for ES-18xx chip (0,1,3)
632 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
633 port if native ISA PnP routines are not used).
634 When dma2 is equal with dma1, the driver works as half-duplex.
636 The power-management is supported.
641 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
643 This module supports multiple cards and autoprobe.
645 The power-management is supported.
650 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
652 total_bufsize - total buffer size in kB (1-4096kB)
653 pcm_substreams_p - playback channels (1-8, default=2)
654 pcm_substreams_c - capture channels (1-8, default=0)
655 clock - clock (0 = auto-detection)
656 use_pm - support the power-management (0 = off, 1 = on,
658 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
659 joystick - enable joystick (default off)
661 This module supports multiple cards and autoprobe.
663 The power-management is supported.
668 Module for ForteMedia FM801 based PCI sound cards.
670 tea575x_tuner - Enable TEA575x tuner
671 - 1 = MediaForte 256-PCS
672 - 2 = MediaForte 256-PCPR
673 - 3 = MediaForte 64-PCR
674 - High 16-bits are video (radio) device number + 1
675 - example: 0x10002 (MediaForte 256-PCPR, device 1)
677 This module supports multiple cards and autoprobe.
679 The power-management is supported.
684 Module for Echoaudio Gina20
686 This module supports multiple cards.
687 The driver requires the firmware loader support on kernel.
692 Module for Echoaudio Gina24
694 This module supports multiple cards.
695 The driver requires the firmware loader support on kernel.
697 Module snd-gusclassic
698 ---------------------
700 Module for Gravis UltraSound Classic sound card.
702 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
703 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
704 dma1 - DMA # for GF1 chip (1,3,5,6,7)
705 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
706 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
707 voices - GF1 voices limit (14-32)
708 pcm_voices - reserved PCM voices
710 This module supports multiple cards and autoprobe.
712 Module snd-gusextreme
713 ---------------------
715 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
717 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
718 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
719 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
720 irq - IRQ # for ES-1688 chip (5,7,9,10)
721 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
722 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
723 dma8 - DMA # for ES-1688 chip (0,1,3)
724 dma1 - DMA # for GF1 chip (1,3,5,6,7)
725 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
726 voices - GF1 voices limit (14-32)
727 pcm_voices - reserved PCM voices
729 This module supports multiple cards and autoprobe (without MPU-401 port).
734 Module for Gravis UltraSound MAX sound card.
736 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
737 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
738 dma1 - DMA # for GF1 chip (1,3,5,6,7)
739 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
740 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
741 voices - GF1 voices limit (14-32)
742 pcm_voices - reserved PCM voices
744 This module supports multiple cards and autoprobe.
749 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8, ICH9, ICH10,
751 ATI SB450, SB600, R600, RS600, RS690, RS780, RV610, RV620,
752 RV630, RV635, RV670, RV770,
756 [Multiple options for each card instance]
757 model - force the model name
758 position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF)
759 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
760 bdl_pos_adj - Specifies the DMA IRQ timing delay in samples.
761 Passing -1 will make the driver to choose the appropriate
762 value based on the controller chip.
764 [Single (global) options]
765 single_cmd - Use single immediate commands to communicate with
766 codecs (for debugging only)
767 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
768 power_save - Automatic power-saving timtout (in second, 0 =
770 power_save_controller - Reset HD-audio controller in power-saving mode
773 This module supports multiple cards and autoprobe.
775 Each codec may have a model table for different configurations.
776 If your machine isn't listed there, the default (usually minimal)
777 configuration is set up. You can pass "model=<name>" option to
778 specify a certain model in such a case. There are different
779 models depending on the codec chip.
781 Model name Description
782 ---------- -----------
784 3stack 3-jack in back and a headphone out
785 3stack-digout 3-jack in back, a HP out and a SPDIF out
786 5stack 5-jack in back, 2-jack in front
787 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
788 6stack 6-jack in back, 2-jack in front
789 6stack-digout 6-jack with a SPDIF out
791 z71v 3-jack (HP shared SPDIF)
792 asus 3-jack (ASUS Mobo)
794 asus-dig ASUS with SPDIF out
795 asus-dig2 ASUS with SPDIF out (using GPIO2)
797 fujitsu Fujitsu Laptops (Pi1536)
799 lg LG laptop (m1 express dual)
800 lg-lw LG LW20/LW25 laptop
802 clevo Clevo laptops (m520G, m665n)
803 medion Medion Rim 2150
804 test for testing/debugging purpose, almost all controls can be
805 adjusted. Appearing only when compiled with
807 auto auto-config reading BIOS (default)
811 hp-3013 HP machines (3013-variant)
813 fujitsu Fujitsu S7020
815 will Will laptops (PB V7900)
816 replacer Replacer 672V
817 basic fixed pin assignment (old default model)
818 test for testing/debugging purpose, almost all controls can
819 adjusted. Appearing only when compiled with
821 auto auto-config reading BIOS (default)
824 fujitsu Fujitsu Laptop
825 hp-bpc HP xw4400/6400/8400/9400 laptops
826 hp-bpc-d7000 HP BPC D7000
827 hp-tc-t5735 HP Thin Client T5735
831 hippo Hippo (ATI) with jack detection, Sony UX-90s
832 hippo_1 Hippo (Benq) with jack detection
833 sony-assamd Sony ASSAMD
834 toshiba-s06 Toshiba S06
835 toshiba-rx1 Toshiba RX1
836 ultra Samsung Q1 Ultra Vista model
837 lenovo-3000 Lenovo 3000 y410
839 basic fixed pin assignment w/o SPDIF
840 auto auto-config reading BIOS (default)
843 quanta-il1 Quanta IL1 mini-notebook
847 acer-aspire Acer Aspire One
848 dell Dell OEM laptops (Vostro 1200)
850 test for testing/debugging purpose, almost all controls can
851 adjusted. Appearing only when compiled with
853 auto auto-config reading BIOS (default)
858 eeepc-p703 ASUS Eeepc P703 P900A
859 eeepc-p901 ASUS Eeepc P901 S101
861 auto auto-config reading BIOS (default)
864 3stack-dig 3-stack (2-channel) with SPDIF
865 3stack-6ch 3-stack (6-channel)
866 3stack-6ch-dig 3-stack (6-channel) with SPDIF
867 6stack-dig 6-stack with SPDIF
868 lenovo-101e Lenovo laptop
869 eeepc-p701 ASUS Eeepc P701
870 eeepc-ep20 ASUS Eeepc EP20
882 auto auto-config reading BIOS (default)
885 3stack-dig 3-jack with SPDIF I/O
886 6stack-dig 6-jack digital with SPDIF I/O
888 targa Targa T8, MSI-1049 T8
891 macpro MacPro support
892 mbp3 Macbook Pro rev3
893 imac24 iMac 24'' with jack detection
895 auto auto-config reading BIOS (default)
898 3stack-dig 3-jack with SPDIF I/O
899 6stack-dig 6-jack digital with SPDIF I/O
900 3stack-6ch 3-jack 6-channel
901 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
902 6stack-dig-demo 6-jack digital for Intel demo board
903 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
904 acer-aspire Acer Aspire 9810
905 medion Medion Laptops
906 medion-md2 Medion MD2
908 targa-2ch-dig Targs/MSI with 2-channel
909 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
910 lenovo-101e Lenovo 101E
911 lenovo-nb0763 Lenovo NB0763
912 lenovo-ms7195-dig Lenovo MS7195
913 lenovo-sky Lenovo Sky
915 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
916 6stack-dell Dell machines with 6stack (Inspiron 530)
918 clevo-m720 Clevo M720 laptop series
919 fujitsu-pi2515 Fujitsu AMILO Pi2515
920 3stack-6ch-intel Intel DG33* boards
921 auto auto-config reading BIOS (default)
925 3stack-dig 3-jack with SPDIF I/O
926 6stack-dig 6-jack with SPDIF I/O
927 3stack-660 3-jack (for ALC660)
928 uniwill-m31 Uniwill M31 laptop
929 toshiba Toshiba laptop support
930 asus Asus laptop support
931 asus-laptop ASUS F2/F3 laptops
932 auto auto-config reading BIOS (default)
936 3stack-dig 3-jack with SPDIF OUT
937 6stack-dig 6-jack with SPDIF OUT
938 3stack-660 3-jack (for ALC660VD)
939 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
940 lenovo Lenovo 3000 C200
941 dallas Dallas laptops
943 auto auto-config reading BIOS (default)
946 minimal 3-jack in back
947 min_fp 3-jack in back, 2-jack in front
948 full 6-jack in back, 2-jack in front
949 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
950 allout 5-jack in back, 2-jack in front, SPDIF out
951 auto auto-config reading BIOS (default)
954 3stack 3-stack mode (default)
957 AD1884A / AD1883 / AD1984A / AD1984B
958 desktop 3-stack desktop (default)
959 laptop laptop with HP jack sensing
960 mobile mobile devices with HP jack sensing
961 thinkpad Lenovo Thinkpad X300
967 basic 3-jack (default)
969 thinkpad Lenovo Thinkpad T60/X60/Z60
976 basic default configuration
977 thinkpad Lenovo Thinkpad T61/X61
981 6stack 6-jack, separate surrounds (default)
982 3stack 3-stack, shared surrounds
983 laptop 2-channel only (FSC V2060, Samsung M50)
984 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
985 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
986 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
988 AD1988/AD1988B/AD1989A/AD1989B
990 6stack-dig ditto with SPDIF
992 3stack-dig ditto with SPDIF
993 laptop 3-jack with hp-jack automute
994 laptop-dig ditto with SPDIF
995 auto auto-config reading BIOS (default)
998 laptop-hpsense Laptop with HP sense (old model laptop)
999 laptop-micsense Laptop with Mic sense (old model fujitsu)
1000 laptop-hpmicsense Laptop with HP and Mic senses
1002 test for testing/debugging purpose, almost all controls
1003 can be adjusted. Appearing only when compiled with
1007 laptop Basic Laptop config
1008 laptop-hp Laptop config for some HP models (subdevice 30A5)
1009 laptop-eapd Laptop config with EAPD support
1010 test for testing/debugging purpose, almost all controls
1011 can be adjusted. Appearing only when compiled with
1015 laptop Basic Laptop config (default)
1016 hp HP Spartan laptop
1020 dell-d21 Dell (unknown)
1021 dell-d22 Dell (unknown)
1022 dell-d23 Dell (unknown)
1023 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
1024 dell-m22 Dell Latitude D620, Dell Latitude D820
1025 dell-m23 Dell XPS M1710, Dell Precision M90
1026 dell-m24 Dell Latitude 120L
1027 dell-m25 Dell Inspiron E1505n
1028 dell-m26 Dell Inspiron 1501
1029 dell-m27 Dell Inspiron E1705/9400
1030 gateway Gateway laptops with EAPD control
1031 panasonic Panasonic CF-74
1035 dell-m42 Dell (unknown)
1036 dell-m43 Dell Precision
1037 dell-m44 Dell Inspiron
1042 5stack D945 5stack + SPDIF
1043 intel-mac-v1 Intel Mac Type 1
1044 intel-mac-v2 Intel Mac Type 2
1045 intel-mac-v3 Intel Mac Type 3
1046 intel-mac-v4 Intel Mac Type 4
1047 intel-mac-v5 Intel Mac Type 5
1048 intel-mac-auto Intel Mac (detect type according to subsystem id)
1049 macmini Intel Mac Mini (equivalent with type 3)
1050 macbook Intel Mac Book (eq. type 5)
1051 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1052 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1053 imac-intel Intel iMac (eq. type 2)
1054 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1055 dell-d81 Dell (unknown)
1056 dell-d82 Dell (unknown)
1057 dell-m81 Dell (unknown)
1058 dell-m82 Dell XPS M1210
1061 ref Reference board, base config
1062 m2-2 Some Gateway MX series laptops
1063 m6 Some Gateway NX series laptops
1064 pa6 Gateway NX860 series
1066 STAC9227/9228/9229/927x
1069 5stack D965 5stack + SPDIF
1070 dell-3stack Dell Dimension E520
1071 dell-bios Fixes with Dell BIOS setup
1075 dell-m4-1 Dell desktops
1076 dell-m4-2 Dell desktops
1080 dell-m6 Dell desktops
1083 vaio Setup for VAIO FE550G/SZ110
1084 vaio-ar Setup for VAIO AR
1086 The model name "genric" is treated as a special case. When this
1087 model is given, the driver uses the generic codec parser without
1088 "codec-patch". It's sometimes good for testing and debugging.
1090 If the default configuration doesn't work and one of the above
1091 matches with your device, report it together with the PCI
1092 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1093 ML (see the section "Links and Addresses").
1095 power_save and power_save_controller options are for power-saving
1096 mode. See powersave.txt for details.
1098 Note 2: If you get click noises on output, try the module option
1099 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1100 register value without FIFO size correction as the current
1101 DMA pointer. position_fix=2 will make the driver to use
1102 the position buffer instead of reading SD_LPIB register.
1103 (Usually SD_LPIB register is more accurate than the
1106 NB: If you get many "azx_get_response timeout" messages at
1107 loading, it's likely a problem of interrupts (e.g. ACPI irq
1108 routing). Try to boot with options like "pci=noacpi". Also, you
1109 can try "single_cmd=1" module option. This will switch the
1110 communication method between HDA controller and codecs to the
1111 single immediate commands instead of CORB/RIRB. Basically, the
1112 single command mode is provided only for BIOS, and you won't get
1113 unsolicited events, too. But, at least, this works independently
1114 from the irq. Remember this is a last resort, and should be
1115 avoided as much as possible...
1117 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1118 On some hardwares, you may need to add a proper probe_mask option
1119 to avoid the "azx_get_response timeout" problem above, instead.
1120 This occurs when the access to non-existing or non-working codec slot
1121 (likely a modem one) causes a stall of the communication via HD-audio
1122 bus. You can see which codec slots are probed by enabling
1123 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1124 proc files. Then limit the slots to probe by probe_mask option.
1125 For example, probe_mask=1 means to probe only the first slot, and
1126 probe_mask=4 means only the third slot.
1128 The power-management is supported.
1133 Module for RME Hammerfall DSP audio interface(s)
1135 This module supports multiple cards.
1137 Note: The firmware data can be automatically loaded via hotplug
1138 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1139 the firmware via hdsploader utility included in alsa-tools
1141 The firmware data is found in alsa-firmware package.
1143 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1144 module did formerly. It will allocate the buffers in advance
1145 when any HDSP cards are found. To make the buffer
1146 allocation sure, load snd-page-alloc module in the early
1147 stage of boot sequence. See "Early Buffer Allocation"
1153 Module for RME HDSP MADI board.
1155 precise_ptr - Enable precise pointer, or disable.
1156 line_outs_monitor - Send playback streams to analog outs by default.
1157 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1159 See hdspm.txt for details.
1164 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1166 This module supports autoprobe and multiple cards.
1171 Module for Envy24 (ICE1712) based PCI sound cards.
1172 * MidiMan M Audio Delta 1010
1173 * MidiMan M Audio Delta 1010LT
1174 * MidiMan M Audio Delta DiO 2496
1175 * MidiMan M Audio Delta 66
1176 * MidiMan M Audio Delta 44
1177 * MidiMan M Audio Delta 410
1178 * MidiMan M Audio Audiophile 2496
1181 * TerraTec EWX 24/96
1182 * TerraTec DMX 6Fire
1184 * Hoontech SoundTrack DSP 24
1185 * Hoontech SoundTrack DSP 24 Value
1186 * Hoontech SoundTrack DSP 24 Media 7.1
1187 * Event Electronics, EZ8
1189 * Lionstracs, Mediastaton
1192 model - Use the given board model, one of the following:
1193 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1194 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1195 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1196 phase88, mediastation
1197 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1198 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1199 in msec resolution, default value is 500 (0.5 sec)
1201 This module supports multiple cards and autoprobe. Note: The consumer part
1202 is not used with all Envy24 based cards (for example in the MidiMan Delta
1205 Note: The supported board is detected by reading EEPROM or PCI
1206 SSID (if EEPROM isn't available). You can override the
1207 model by passing "model" module option in case that the
1208 driver isn't configured properly or you want to try another
1214 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1215 * MidiMan M Audio Revolution 5.1
1216 * MidiMan M Audio Revolution 7.1
1217 * MidiMan M Audio Audiophile 192
1219 * TerraTec Aureon 5.1 Sky
1220 * TerraTec Aureon 7.1 Space
1221 * TerraTec Aureon 7.1 Universe
1224 * AudioTrak Prodigy 7.1
1225 * AudioTrak Prodigy 7.1 LT
1226 * AudioTrak Prodigy 7.1 XT
1227 * AudioTrak Prodigy 7.1 HIFI
1228 * AudioTrak Prodigy 7.1 HD2
1229 * AudioTrak Prodigy 192
1231 * Albatron K8X800 Pro II
1232 * Chaintech ZNF3-150
1233 * Chaintech ZNF3-250
1240 * Hercules Fortissimo IV
1241 * EGO-SYS WaveTerminal 192M
1243 model - Use the given board model, one of the following:
1244 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1245 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1246 juli, aureon51, aureon71, universe, ap192, k8x800,
1247 phase22, phase28, ms300, av710, se200pci, se90pci,
1248 fortissimo4, sn25p, WT192M
1250 This module supports multiple cards and autoprobe.
1252 Note: The supported board is detected by reading EEPROM or PCI
1253 SSID (if EEPROM isn't available). You can override the
1254 model by passing "model" module option in case that the
1255 driver isn't configured properly or you want to try another
1261 Module for Echoaudio Indigo
1263 This module supports multiple cards.
1264 The driver requires the firmware loader support on kernel.
1269 Module for Echoaudio Indigo DJ
1271 This module supports multiple cards.
1272 The driver requires the firmware loader support on kernel.
1277 Module for Echoaudio Indigo IO
1279 This module supports multiple cards.
1280 The driver requires the firmware loader support on kernel.
1285 Module for AC'97 motherboards from Intel and compatibles.
1286 * Intel i810/810E, i815, i820, i830, i84x, MX440
1287 ICH5, ICH6, ICH7, 6300ESB, ESB2
1288 * SiS 7012 (SiS 735)
1289 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1291 * AMD AMD768, AMD8111
1294 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1295 ac97_quirk - AC'97 workaround for strange hardware
1296 See "AC97 Quirk Option" section below.
1297 buggy_irq - Enable workaround for buggy interrupts on some
1298 motherboards (default yes on nForce chips,
1300 buggy_semaphore - Enable workaround for hardwares with buggy
1301 semaphores (e.g. on some ASUS laptops)
1303 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1304 from the controller chip
1305 (0 = off, 1 = on, -1 = default)
1307 This module supports one chip and autoprobe.
1309 Note: the latest driver supports auto-detection of chip clock.
1310 if you still encounter too fast playback, specify the clock
1311 explicitly via the module option "ac97_clock=41194".
1313 Joystick/MIDI ports are not supported by this driver. If your
1314 motherboard has these devices, use the ns558 or snd-mpu401
1315 modules, respectively.
1317 The power-management is supported.
1319 Module snd-intel8x0m
1320 --------------------
1322 Module for Intel ICH (i8x0) chipset MC97 modems.
1323 * Intel i810/810E, i815, i820, i830, i84x, MX440
1325 * SiS 7013 (SiS 735)
1326 * NVidia NForce, NForce2, NForce2s, NForce3
1330 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1332 This module supports one card and autoprobe.
1334 Note: The default index value of this module is -2, i.e. the first
1337 The power-management is supported.
1339 Module snd-interwave
1340 --------------------
1342 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1343 and other sound cards based on AMD InterWave (tm) chip.
1345 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1346 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1347 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1348 effect - 1 = InterWave effects enable (default 0);
1350 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1352 with isapnp=0, the following options are available:
1354 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1355 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1356 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1357 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1359 This module supports multiple cards, autoprobe and ISA PnP.
1361 Module snd-interwave-stb
1362 ------------------------
1364 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1365 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1366 circuit for extended control of bass, treble and master volume.
1368 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1369 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1370 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1371 effect - 1 = InterWave effects enable (default 0);
1373 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1375 with isapnp=0, the following options are available:
1377 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1378 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1379 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1380 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1381 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1383 This module supports multiple cards, autoprobe and ISA PnP.
1388 Module for Korg 1212 IO PCI card
1390 This module supports multiple cards.
1395 Module for Echoaudio Layla20
1397 This module supports multiple cards.
1398 The driver requires the firmware loader support on kernel.
1403 Module for Echoaudio Layla24
1405 This module supports multiple cards.
1406 The driver requires the firmware loader support on kernel.
1411 Module for Allegro/Maestro3 chips
1413 external_amp - enable external amp (enabled by default)
1414 amp_gpio - GPIO pin number for external amp (0-15) or
1415 -1 for default pin (8 for allegro, 1 for
1418 This module supports autoprobe and multiple chips.
1420 Note: the binding of amplifier is dependent on hardware.
1421 If there is no sound even though all channels are unmuted, try to
1422 specify other gpio connection via amp_gpio option.
1423 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1426 The power-management is supported.
1431 Module for Echoaudio Mia
1433 This module supports multiple cards.
1434 The driver requires the firmware loader support on kernel.
1439 Module for Miro soundcards: miroSOUND PCM 1 pro,
1441 miroSOUND PCM 20 Radio.
1443 port - Port # (0x530,0x604,0xe80,0xf40)
1444 irq - IRQ # (5,7,9,10,11)
1445 dma1 - 1st dma # (0,1,3)
1446 dma2 - 2nd dma # (0,1)
1447 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1448 mpu_irq - MPU-401 irq # (5,7,9,10)
1449 fm_port - FM Port # (0x388)
1450 wss - enable WSS mode
1451 ide - enable onboard ide support
1456 Module for Digigram miXart8 sound cards.
1458 This module supports multiple cards.
1459 Note: One miXart8 board will be represented as 4 alsa cards.
1460 See MIXART.txt for details.
1462 When the driver is compiled as a module and the hotplug firmware
1463 is supported, the firmware data is loaded via hotplug automatically.
1464 Install the necessary firmware files in alsa-firmware package.
1465 When no hotplug fw loader is available, you need to load the
1466 firmware via mixartloader utility in alsa-tools package.
1471 Module for Echoaudio Mona
1473 This module supports multiple cards.
1474 The driver requires the firmware loader support on kernel.
1479 Module for MPU-401 UART devices.
1481 port - port number or -1 (disable)
1482 irq - IRQ number or -1 (disable)
1483 pnp - PnP detection - 0 = disable, 1 = enable (default)
1485 This module supports multiple devices and PnP.
1490 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1493 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1494 irq - IRQ # for MTPAV (7,5, default=7)
1495 hwports - number of supported hardware ports, default=8.
1497 Module supports only 1 card. This module has no enable option.
1502 Module for Ego Systems (ESI) Miditerminal 4140
1504 This module supports multiple devices.
1505 Requires parport (CONFIG_PARPORT).
1510 Module for NeoMagic NM256AV/ZX chips
1512 playback_bufsize - max playback frame size in kB (4-128kB)
1513 capture_bufsize - max capture frame size in kB (4-128kB)
1514 force_ac97 - 0 or 1 (disabled by default)
1515 buffer_top - specify buffer top address
1516 use_cache - 0 or 1 (disabled by default)
1517 vaio_hack - alias buffer_top=0x25a800
1518 reset_workaround - enable AC97 RESET workaround for some laptops
1519 reset_workaround2 - enable extended AC97 RESET workaround for some
1522 This module supports one chip and autoprobe.
1524 The power-management is supported.
1526 Note: on some notebooks the buffer address cannot be detected
1527 automatically, or causes hang-up during initialization.
1528 In such a case, specify the buffer top address explicitly via
1529 the buffer_top option.
1531 Sony F250: buffer_top=0x25a800
1532 Sony F270: buffer_top=0x272800
1533 The driver supports only ac97 codec. It's possible to force
1534 to initialize/use ac97 although it's not detected. In such a
1535 case, use force_ac97=1 option - but *NO* guarantee whether it
1538 Note: The NM256 chip can be linked internally with non-AC97
1539 codecs. This driver supports only the AC97 codec, and won't work
1540 with machines with other (most likely CS423x or OPL3SAx) chips,
1541 even though the device is detected in lspci. In such a case, try
1542 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1543 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1544 and proper hardware parameters in the case without ISA PnP.
1546 Note: some laptops need a workaround for AC97 RESET. For the
1547 known hardware like Dell Latitude LS and Sony PCG-F305, this
1548 workaround is enabled automatically. For other laptops with a
1549 hard freeze, you can try reset_workaround=1 option.
1551 Note: Dell Latitude CSx laptops have another problem regarding
1552 AC97 RESET. On these laptops, reset_workaround2 option is
1553 turned on as default. This option is worth to try if the
1554 previous reset_workaround option doesn't help.
1556 Note: This driver is really crappy. It's a porting from the
1557 OSS driver, which is a result of black-magic reverse engineering.
1558 The detection of codec will fail if the driver is loaded *after*
1559 X-server as described above. You might be able to force to load
1560 the module, but it may result in hang-up. Hence, make sure that
1561 you load this module *before* X if you encounter this kind of
1567 Module for Yamaha OPL3-SA2/SA3 sound cards.
1569 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1571 with isapnp=0, the following options are available:
1573 port - control port # for OPL3-SA chip (0x370)
1574 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1575 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1576 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1577 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1578 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1579 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1580 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1582 This module supports multiple cards and ISA PnP. It does not support
1583 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1585 The power-management is supported.
1587 Module snd-opti92x-ad1848
1588 -------------------------
1590 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1591 Module works with OAK Mozart cards as well.
1593 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1595 with isapnp=0, the following options are available:
1597 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1598 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1599 fm_port - port # for OPL3 device (0x388)
1600 irq - IRQ # for WSS chip (5,7,9,10,11)
1601 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1602 dma1 - first DMA # for WSS chip (0,1,3)
1604 This module supports only one card, autoprobe and PnP.
1606 Module snd-opti92x-cs4231
1607 -------------------------
1609 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1611 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1613 with isapnp=0, the following options are available:
1615 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1616 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1617 fm_port - port # for OPL3 device (0x388)
1618 irq - IRQ # for WSS chip (5,7,9,10,11)
1619 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1620 dma1 - first DMA # for WSS chip (0,1,3)
1621 dma2 - second DMA # for WSS chip (0,1,3)
1623 This module supports only one card, autoprobe and PnP.
1628 Module for sound cards based on OPTi 82c93x chips.
1630 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1632 with isapnp=0, the following options are available:
1634 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1635 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1636 fm_port - port # for OPL3 device (0x388)
1637 irq - IRQ # for WSS chip (5,7,9,10,11)
1638 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1639 dma1 - first DMA # for WSS chip (0,1,3)
1640 dma2 - second DMA # for WSS chip (0,1,3)
1642 This module supports only one card, autoprobe and PnP.
1647 Module for sound cards based on the C-Media CMI8788 chip:
1649 * AuzenTech X-Meridian
1651 * Club3D Theatron DTS
1653 * Razer Barracuda AC-1
1656 This module supports autoprobe and multiple cards.
1661 Module for internal PC-Speaker.
1663 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1665 This module supports system beeps, some kind of PCM playback and
1666 even a few mixer controls.
1671 Module for Digigram PCXHR boards
1673 This module supports multiple cards.
1675 Module snd-portman2x4
1676 ---------------------
1678 Module for Midiman Portman 2x4 parallel port MIDI interface
1680 This module supports multiple cards.
1682 Module snd-powermac (on ppc only)
1683 ---------------------------------
1685 Module for PowerMac, iMac and iBook on-board soundchips
1687 enable_beep - enable beep using PCM (enabled as default)
1689 Module supports autoprobe a chip.
1691 Note: the driver may have problems regarding endianess.
1693 The power-management is supported.
1695 Module snd-pxa2xx-ac97 (on arm only)
1696 ------------------------------------
1698 Module for AC97 driver for the Intel PXA2xx chip
1700 For ARM architecture only.
1702 The power-management is supported.
1707 Module for Conexant Riptide chip
1709 joystick_port - Joystick port # (default: 0x200)
1710 mpu_port - MPU401 port # (default: 0x330)
1711 opl3_port - OPL3 port # (default: 0x388)
1713 This module supports multiple cards.
1714 The driver requires the firmware loader support on kernel.
1715 You need to install the firmware file "riptide.hex" to the standard
1716 firmware path (e.g. /lib/firmware).
1721 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1722 Prodif96 and Prodif Gold) sound cards.
1724 This module supports multiple cards.
1729 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1731 This module supports multiple cards.
1736 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1738 precise_ptr - Enable precise pointer (doesn't work reliably).
1741 This module supports multiple cards.
1743 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1744 module did formerly. It will allocate the buffers in advance
1745 when any RME9652 cards are found. To make the buffer
1746 allocation sure, load snd-page-alloc module in the early
1747 stage of boot sequence. See "Early Buffer Allocation"
1750 Module snd-sa11xx-uda1341 (on arm only)
1751 ---------------------------------------
1753 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1755 Module supports only one card.
1756 Module has no enable and index options.
1758 The power-management is supported.
1763 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1767 port - port # for SB DSP chip (0x220,0x240,0x260)
1768 irq - IRQ # for SB DSP chip (5,7,9,10)
1769 dma8 - DMA # for SB DSP chip (1,3)
1771 This module supports multiple cards and autoprobe.
1773 The power-management is supported.
1775 Module snd-sb16 and snd-sbawe
1776 -----------------------------
1778 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1779 SoundBlaster AWE 32 (PnP),
1780 SoundBlaster AWE 64 PnP
1782 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1783 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1784 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1786 with isapnp=0, the following options are available:
1788 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1789 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1790 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1791 (snd-sbawe module only)
1792 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1793 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1794 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1796 This module supports multiple cards, autoprobe and ISA PnP.
1798 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1799 disable 16bit DMA with dma16 = -1 module parameter.
1800 Also, all Sound Blaster 16 type cards can operate in 16-bit
1801 half duplex mode through 8-bit DMA channel by disabling their
1804 The power-management is supported.
1809 Module for Gallant SC-6000 soundcard.
1811 port - Port # (0x220 or 0x240)
1812 mss_port - MSS Port # (0x530 or 0xe80)
1813 irq - IRQ # (5,7,9,10,11)
1814 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1817 This module supports multiple cards.
1819 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1824 Module for Aztech Sound Galaxy sound card.
1826 sbport - Port # for SB16 interface (0x220,0x240)
1827 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1828 irq - IRQ # (7,9,10,11)
1831 This module supports multiple cards.
1833 The power-management is supported.
1838 Module for ENSONIQ SoundScape PnP cards.
1840 port - Port # (PnP setup)
1841 wss_port - WSS Port # (PnP setup)
1842 irq - IRQ # (PnP setup)
1843 mpu_irq - MPU-401 IRQ # (PnP setup)
1844 dma - DMA # (PnP setup)
1845 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1847 This module supports multiple cards. ISA PnP must be enabled.
1848 You need sscape_ctl tool in alsa-tools package for loading
1851 Module snd-sun-amd7930 (on sparc only)
1852 --------------------------------------
1854 Module for AMD7930 sound chips found on Sparcs.
1856 This module supports multiple cards.
1858 Module snd-sun-cs4231 (on sparc only)
1859 -------------------------------------
1861 Module for CS4231 sound chips found on Sparcs.
1863 This module supports multiple cards.
1865 Module snd-sun-dbri (on sparc only)
1866 -----------------------------------
1868 Module for DBRI sound chips found on Sparcs.
1870 This module supports multiple cards.
1872 Module snd-wavefront
1873 --------------------
1875 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1877 use_cs4232_midi - Use CS4232 MPU-401 interface
1878 (inaccessibly located inside your computer)
1879 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1881 with isapnp=0, the following options are available:
1883 cs4232_pcm_port - Port # for CS4232 PCM interface.
1884 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1885 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1886 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1887 ics2115_port - Port # for ICS2115
1888 ics2115_irq - IRQ # for ICS2115
1889 fm_port - FM OPL-3 Port #
1890 dma1 - DMA1 # for CS4232 PCM interface.
1891 dma2 - DMA2 # for CS4232 PCM interface.
1893 The below are options for wavefront_synth features:
1894 wf_raw - Assume that we need to boot the OS (default:no)
1895 If yes, then during driver loading, the state of the board is
1896 ignored, and we reset the board and load the firmware anyway.
1897 fx_raw - Assume that the FX process needs help (default:yes)
1898 If false, we'll leave the FX processor in whatever state it is
1899 when the driver is loaded. The default is to download the
1900 microprogram and associated coefficients to set it up for
1901 "default" operation, whatever that means.
1902 debug_default - Debug parameters for card initialization
1903 wait_usecs - How long to wait without sleeping, usecs
1905 This magic number seems to give pretty optimal throughput
1906 based on my limited experimentation.
1907 If you want to play around with it and find a better value, be
1908 my guest. Remember, the idea is to get a number that causes us
1909 to just busy wait for as many WaveFront commands as possible,
1910 without coming up with a number so large that we hog the whole
1912 Specifically, with this number, out of about 134,000 status
1913 waits, only about 250 result in a sleep.
1914 sleep_interval - How long to sleep when waiting for reply
1916 sleep_tries - How many times to try sleeping during a wait
1918 ospath - Pathname to processed ICS2115 OS firmware
1919 (default:wavefront.os)
1920 The path name of the ISC2115 OS firmware. In the recent
1921 version, it's handled via firmware loader framework, so it
1922 must be installed in the proper path, typically,
1924 reset_time - How long to wait for a reset to take effect
1926 ramcheck_time - How many seconds to wait for the RAM test
1928 osrun_time - How many seconds to wait for the ICS2115 OS
1931 This module supports multiple cards and ISA PnP.
1933 Note: the firmware file "wavefront.os" was located in the earlier
1934 version in /etc. Now it's loaded via firmware loader, and
1935 must be in the proper firmware path, such as /lib/firmware.
1936 Copy (or symlink) the file appropriately if you get an error
1937 regarding firmware downloading after upgrading the kernel.
1939 Module snd-sonicvibes
1940 ---------------------
1942 Module for S3 SonicVibes PCI sound cards.
1943 * PINE Schubert 32 PCI
1945 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1946 - SoundCard must have onboard SRAM for this.
1947 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1949 This module supports multiple cards and autoprobe.
1951 Module snd-serial-u16550
1952 ------------------------
1954 Module for UART16550A serial MIDI ports.
1956 port - port # for UART16550A chip
1957 irq - IRQ # for UART16550A chip, -1 = poll mode
1958 speed - speed in bauds (9600,19200,38400,57600,115200)
1960 base - base for divisor in bauds (57600,115200,230400,460800)
1962 outs - number of MIDI ports in a serial port (1-4)
1964 adaptor - Type of adaptor.
1965 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1966 3 = MS-124W M/B, 4 = Generic
1968 This module supports multiple cards. This module does not support autoprobe
1969 thus the main port must be specified!!! Other options are optional.
1974 Module for Trident 4DWave DX/NX sound cards.
1975 * Best Union Miss Melody 4DWave PCI
1977 * Warpspeed ONSpeed 4DWave PCI
1980 * CHIC True Sound 4Dwave
1981 * Shark Predator4D-PCI
1982 * Jaton SonicWave 4D
1983 * SiS SI7018 PCI Audio
1984 * Hoontech SoundTrack Digital 4DWave NX
1986 pcm_channels - max channels (voices) reserved for PCM
1987 wavetable_size - max wavetable size in kB (4-?kb)
1989 This module supports multiple cards and autoprobe.
1991 The power-management is supported.
1993 Module snd-usb-audio
1994 --------------------
1996 Module for USB audio and USB MIDI devices.
1998 vid - Vendor ID for the device (optional)
1999 pid - Product ID for the device (optional)
2000 nrpacks - Max. number of packets per URB (default: 8)
2001 async_unlink - Use async unlink mode (default: yes)
2002 device_setup - Device specific magic number (optional)
2003 - Influence depends on the device
2005 ignore_ctl_error - Ignore any USB-controller regarding mixer
2006 interface (default: no)
2008 This module supports multiple devices, autoprobe and hotplugging.
2010 NB: nrpacks parameter can be modified dynamically via sysfs.
2011 Don't put the value over 20. Changing via sysfs has no sanity
2013 NB: async_unlink=0 would cause Oops. It remains just for
2014 debugging purpose (if any).
2015 NB: ignore_ctl_error=1 may help when you get an error at accessing
2016 the mixer element such as URB error -22. This happens on some
2017 buggy USB device or the controller.
2019 Module snd-usb-caiaq
2020 --------------------
2022 Module for caiaq UB audio interfaces,
2023 * Native Instruments RigKontrol2
2024 * Native Instruments Kore Controller
2025 * Native Instruments Audio Kontrol 1
2026 * Native Instruments Audio 8 DJ
2028 This module supports multiple devices, autoprobe and hotplugging.
2030 Module snd-usb-usx2y
2031 --------------------
2033 Module for Tascam USB US-122, US-224 and US-428 devices.
2035 This module supports multiple devices, autoprobe and hotplugging.
2037 Note: you need to load the firmware via usx2yloader utility included
2038 in alsa-tools and alsa-firmware packages.
2043 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2044 8233A, 8233C, 8235, 8237 (south) bridge.
2046 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2048 joystick - Enable joystick (default off) [VIA686A/686B only]
2049 ac97_clock - AC'97 codec clock base (default 48000Hz)
2050 dxs_support - support DXS channels,
2051 0 = auto (default), 1 = enable, 2 = disable,
2052 3 = 48k only, 4 = no VRA, 5 = enable any sample
2053 rate and different sample rates on different
2055 [VIA8233/C, 8235, 8237 only]
2056 ac97_quirk - AC'97 workaround for strange hardware
2057 See "AC97 Quirk Option" section below.
2059 This module supports one chip and autoprobe.
2061 Note: on some SMP motherboards like MSI 694D the interrupts might
2062 not be generated properly. In such a case, please try to
2063 set the SMP (or MPS) version on BIOS to 1.1 instead of
2064 default value 1.4. Then the interrupt number will be
2065 assigned under 15. You might also upgrade your BIOS.
2067 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2068 channels as the first PCM. On these channels, up to 4
2069 streams can be played at the same time, and the controller
2070 can perform sample rate conversion with separate rates for
2072 As default (dxs_support = 0), 48k fixed rate is chosen
2073 except for the known devices since the output is often
2074 noisy except for 48k on some mother boards due to the
2076 Please try once dxs_support=5 and if it works on other
2077 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2078 know the PCI subsystem vendor/device id's (output of
2080 If dxs_support=5 does not work, try dxs_support=4; if it
2081 doesn't work too, try dxs_support=1. (dxs_support=1 is
2082 usually for old motherboards. The correct implemented
2083 board should work with 4 or 5.) If it still doesn't
2084 work and the default setting is ok, dxs_support=3 is the
2085 right choice. If the default setting doesn't work at all,
2086 try dxs_support=2 to disable the DXS channels.
2087 In any cases, please let us know the result and the
2088 subsystem vendor/device ids. See "Links and Addresses"
2091 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2092 additionally. The mpu_port option is for VIA686 chips only.
2094 The power-management is supported.
2096 Module snd-via82xx-modem
2097 ------------------------
2099 Module for VIA82xx AC97 modem
2101 ac97_clock - AC'97 codec clock base (default 48000Hz)
2103 This module supports one card and autoprobe.
2105 Note: The default index value of this module is -2, i.e. the first
2108 The power-management is supported.
2113 Module for virtual rawmidi devices.
2114 This module creates virtual rawmidi devices which communicate
2115 to the corresponding ALSA sequencer ports.
2117 midi_devs - MIDI devices # (1-4, default=4)
2119 This module supports multiple cards.
2124 Module for sound cards based on the Asus AV100/AV200 chips,
2125 i.e., Xonar D1, DX, D2, D2X and HDAV1.3 (Deluxe).
2127 This module supports autoprobe and multiple cards.
2132 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2134 mic - Enable Microphone on V222 Mic (NYI)
2135 ibl - Capture IBL size. (default = 0, minimum size)
2137 This module supports multiple cards.
2139 When the driver is compiled as a module and the hotplug firmware
2140 is supported, the firmware data is loaded via hotplug automatically.
2141 Install the necessary firmware files in alsa-firmware package.
2142 When no hotplug fw loader is available, you need to load the
2143 firmware via vxloader utility in alsa-tools package. To invoke
2144 vxloader automatically, add the following to /etc/modprobe.conf
2146 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2148 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2149 /etc/modules.conf, instead.)
2150 IBL size defines the interrupts period for PCM. The smaller size
2151 gives smaller latency but leads to more CPU consumption, too.
2152 The size is usually aligned to 126. As default (=0), the smallest
2153 size is chosen. The possible IBL values can be found in
2154 /proc/asound/cardX/vx-status proc file.
2156 The power-management is supported.
2161 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2163 ibl - Capture IBL size. (default = 0, minimum size)
2165 This module supports multiple cards. The module is compiled only when
2166 PCMCIA is supported on kernel.
2168 With the older 2.6.x kernel, to activate the driver via the card
2169 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2170 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2171 longer require a config file.
2173 When the driver is compiled as a module and the hotplug firmware
2174 is supported, the firmware data is loaded via hotplug automatically.
2175 Install the necessary firmware files in alsa-firmware package.
2176 When no hotplug fw loader is available, you need to load the
2177 firmware via vxloader utility in alsa-tools package.
2179 About capture IBL, see the description of snd-vx222 module.
2181 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2184 The power-management is supported.
2189 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2191 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2192 1 (auto-detect for YMF744/754 only)
2193 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2194 1 (auto-detect for YMF744/754 only)
2195 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2197 rear_switch - enable shared rear/line-in switch (bool)
2199 This module supports autoprobe and multiple chips.
2201 The power-management is supported.
2203 Module snd-pdaudiocf
2204 --------------------
2206 Module for Sound Core PDAudioCF sound card.
2208 The power-management is supported.
2214 The ac97_quirk option is used to enable/override the workaround for
2215 specific devices on drivers for on-board AC'97 controllers like
2216 snd-intel8x0. Some hardware have swapped output pins between Master
2217 and Headphone, or Surround (thanks to confusion of AC'97
2218 specifications from version to version :-)
2220 The driver provides the auto-detection of known problematic devices,
2221 but some might be unknown or wrongly detected. In such a case, pass
2222 the proper value with this option.
2224 The following strings are accepted:
2225 - default Don't override the default setting
2226 - none Disable the quirk
2227 - hp_only Bind Master and Headphone controls as a single control
2228 - swap_hp Swap headphone and master controls
2229 - swap_surround Swap master and surround controls
2230 - ad_sharing For AD1985, turn on OMS bit and use headphone
2231 - alc_jack For ALC65x, turn on the jack sense mode
2232 - inv_eapd Inverted EAPD implementation
2233 - mute_led Bind EAPD bit for turning on/off mute LED
2235 For backward compatibility, the corresponding integer value -1, 0,
2236 ... are accepted, too.
2238 For example, if "Master" volume control has no effect on your device
2239 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2242 Configuring Non-ISAPNP Cards
2243 ============================
2245 When the kernel is configured with ISA-PnP support, the modules
2246 supporting the isapnp cards will have module options "isapnp".
2247 If this option is set, *only* the ISA-PnP devices will be probed.
2248 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2249 together with the proper i/o and irq configuration.
2251 When the kernel is configured without ISA-PnP support, isapnp option
2252 will be not built in.
2255 Module Autoloading Support
2256 ==========================
2258 The ALSA drivers can be loaded automatically on demand by defining
2259 module aliases. The string 'snd-card-%1' is requested for ALSA native
2260 devices where %i is sound card number from zero to seven.
2262 To auto-load an ALSA driver for OSS services, define the string
2263 'sound-slot-%i' where %i means the slot number for OSS, which
2264 corresponds to the card index of ALSA. Usually, define this
2265 as the same card module.
2267 An example configuration for a single emu10k1 card is like below:
2268 ----- /etc/modprobe.conf
2269 alias snd-card-0 snd-emu10k1
2270 alias sound-slot-0 snd-emu10k1
2271 ----- /etc/modprobe.conf
2273 The available number of auto-loaded sound cards depends on the module
2274 option "cards_limit" of snd module. As default it's set to 1.
2275 To enable the auto-loading of multiple cards, specify the number of
2276 sound cards in that option.
2278 When multiple cards are available, it'd better to specify the index
2279 number for each card via module option, too, so that the order of
2280 cards is kept consistent.
2282 An example configuration for two sound cards is like below:
2284 ----- /etc/modprobe.conf
2286 options snd cards_limit=2
2287 alias snd-card-0 snd-interwave
2288 alias snd-card-1 snd-ens1371
2289 options snd-interwave index=0
2290 options snd-ens1371 index=1
2292 alias sound-slot-0 snd-interwave
2293 alias sound-slot-1 snd-ens1371
2294 ----- /etc/modprobe.conf
2296 In this example, the interwave card is always loaded as the first card
2297 (index 0) and ens1371 as the second (index 1).
2299 Alternative (and new) way to fixate the slot assignment is to use
2300 "slots" option of snd module. In the case above, specify like the
2303 options snd slots=snd-interwave,snd-ens1371
2305 Then, the first slot (#0) is reserved for snd-interwave driver, and
2306 the second (#1) for snd-ens1371. You can omit index option in each
2307 driver if slots option is used (although you can still have them at
2308 the same time as long as they don't conflict).
2310 The slots option is especially useful for avoiding the possible
2311 hot-plugging and the resultant slot conflict. For example, in the
2312 case above again, the first two slots are already reserved. If any
2313 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2314 snd-ens1371, it will be assigned to the third or later slot.
2316 When a module name is given with '!', the slot will be given for any
2317 modules but that name. For example, "slots=!snd-pcsp" will reserve
2318 the first slot for any modules but snd-pcsp.
2321 ALSA PCM devices to OSS devices mapping
2322 =======================================
2324 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2325 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2326 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2327 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2328 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2329 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2330 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2331 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2332 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2334 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2335 sound card number and second means device number. The ALSA devices
2336 have either 'c' or 'p' suffix indicating the direction, capture and
2337 playback, respectively.
2339 Please note that the device mapping above may be varied via the module
2340 options of snd-pcm-oss module.
2343 Proc interfaces (/proc/asound)
2344 ==============================
2346 /proc/asound/card#/pcm#[cp]/oss
2347 -------------------------------
2348 String "erase" - erase all additional informations about OSS applications
2349 String "<app_name> <fragments> <fragment_size> [<options>]"
2351 <app_name> - name of application with (higher priority) or without path
2352 <fragments> - number of fragments or zero if auto
2353 <fragment_size> - size of fragment in bytes or zero if auto
2354 <options> - optional parameters
2355 - disable the application tries to open a pcm device for
2356 this channel but does not want to use it.
2357 (Cause a bug or mmap needs)
2358 It's good for Quake etc...
2359 - direct don't use plugins
2360 - block force block mode (rvplayer)
2361 - non-block force non-block mode
2362 - whole-frag write only whole fragments (optimization affecting
2364 - no-silence do not fill silence ahead to avoid clicks
2365 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2366 instead of filled blocks
2368 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2369 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2370 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2373 Early Buffer Allocation
2374 =======================
2376 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2377 sometimes it's too late to find such spaces when the driver module is
2378 actually loaded due to memory fragmentation. You can pre-allocate the
2379 PCM buffers by loading snd-page-alloc module and write commands to its
2380 proc file in prior, for example, in the early boot stage like
2381 /etc/init.d/*.local scripts.
2383 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2384 usage of page allocation. In writing, you can send the following
2385 commands to the snd-page-alloc driver:
2387 - add VENDOR DEVICE MASK SIZE BUFFERS
2389 VENDOR and DEVICE are PCI vendor and device IDs. They take
2390 integer numbers (0x prefix is needed for the hex).
2391 MASK is the PCI DMA mask. Pass 0 if not restricted.
2392 SIZE is the size of each buffer to allocate. You can pass
2393 k and m suffix for KB and MB. The max number is 16MB.
2394 BUFFERS is the number of buffers to allocate. It must be greater
2395 than 0. The max number is 4.
2399 This will erase the all pre-allocated buffers which are not in
2406 ALSA project homepage
2407 http://www.alsa-project.org
2409 ALSA Bug Tracking System
2410 https://bugtrack.alsa-project.org/bugs/
2413 mailto:alsa-devel@alsa-project.org
git://ftp.safe.ca / safe / jmp / linux-2.6 / blob