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
1073 ref-no-jd Reference board without HP/Mic jack detection
1075 5stack D965 5stack + SPDIF
1076 dell-3stack Dell Dimension E520
1077 dell-bios Fixes with Dell BIOS setup
1081 dell-m4-1 Dell desktops
1082 dell-m4-2 Dell desktops
1083 dell-m4-3 Dell desktops
1087 no-jd BIOS setup but without jack-detection
1088 dell-m6-amic Dell desktops/laptops with analog mics
1089 dell-m6-dmic Dell desktops/laptops with digital mics
1090 dell-m6 Dell desktops/laptops with both type of mics
1093 vaio Setup for VAIO FE550G/SZ110
1094 vaio-ar Setup for VAIO AR
1096 The model name "genric" is treated as a special case. When this
1097 model is given, the driver uses the generic codec parser without
1098 "codec-patch". It's sometimes good for testing and debugging.
1100 If the default configuration doesn't work and one of the above
1101 matches with your device, report it together with the PCI
1102 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1103 ML (see the section "Links and Addresses").
1105 power_save and power_save_controller options are for power-saving
1106 mode. See powersave.txt for details.
1108 Note 2: If you get click noises on output, try the module option
1109 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1110 register value without FIFO size correction as the current
1111 DMA pointer. position_fix=2 will make the driver to use
1112 the position buffer instead of reading SD_LPIB register.
1113 (Usually SD_LPIB register is more accurate than the
1116 NB: If you get many "azx_get_response timeout" messages at
1117 loading, it's likely a problem of interrupts (e.g. ACPI irq
1118 routing). Try to boot with options like "pci=noacpi". Also, you
1119 can try "single_cmd=1" module option. This will switch the
1120 communication method between HDA controller and codecs to the
1121 single immediate commands instead of CORB/RIRB. Basically, the
1122 single command mode is provided only for BIOS, and you won't get
1123 unsolicited events, too. But, at least, this works independently
1124 from the irq. Remember this is a last resort, and should be
1125 avoided as much as possible...
1127 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1128 On some hardwares, you may need to add a proper probe_mask option
1129 to avoid the "azx_get_response timeout" problem above, instead.
1130 This occurs when the access to non-existing or non-working codec slot
1131 (likely a modem one) causes a stall of the communication via HD-audio
1132 bus. You can see which codec slots are probed by enabling
1133 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1134 proc files. Then limit the slots to probe by probe_mask option.
1135 For example, probe_mask=1 means to probe only the first slot, and
1136 probe_mask=4 means only the third slot.
1138 The power-management is supported.
1143 Module for RME Hammerfall DSP audio interface(s)
1145 This module supports multiple cards.
1147 Note: The firmware data can be automatically loaded via hotplug
1148 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1149 the firmware via hdsploader utility included in alsa-tools
1151 The firmware data is found in alsa-firmware package.
1153 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1154 module did formerly. It will allocate the buffers in advance
1155 when any HDSP cards are found. To make the buffer
1156 allocation sure, load snd-page-alloc module in the early
1157 stage of boot sequence. See "Early Buffer Allocation"
1163 Module for RME HDSP MADI board.
1165 precise_ptr - Enable precise pointer, or disable.
1166 line_outs_monitor - Send playback streams to analog outs by default.
1167 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1169 See hdspm.txt for details.
1174 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1176 This module supports autoprobe and multiple cards.
1181 Module for Envy24 (ICE1712) based PCI sound cards.
1182 * MidiMan M Audio Delta 1010
1183 * MidiMan M Audio Delta 1010LT
1184 * MidiMan M Audio Delta DiO 2496
1185 * MidiMan M Audio Delta 66
1186 * MidiMan M Audio Delta 44
1187 * MidiMan M Audio Delta 410
1188 * MidiMan M Audio Audiophile 2496
1191 * TerraTec EWX 24/96
1192 * TerraTec DMX 6Fire
1194 * Hoontech SoundTrack DSP 24
1195 * Hoontech SoundTrack DSP 24 Value
1196 * Hoontech SoundTrack DSP 24 Media 7.1
1197 * Event Electronics, EZ8
1199 * Lionstracs, Mediastaton
1202 model - Use the given board model, one of the following:
1203 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1204 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1205 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1206 phase88, mediastation
1207 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1208 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1209 in msec resolution, default value is 500 (0.5 sec)
1211 This module supports multiple cards and autoprobe. Note: The consumer part
1212 is not used with all Envy24 based cards (for example in the MidiMan Delta
1215 Note: The supported board is detected by reading EEPROM or PCI
1216 SSID (if EEPROM isn't available). You can override the
1217 model by passing "model" module option in case that the
1218 driver isn't configured properly or you want to try another
1224 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1225 * MidiMan M Audio Revolution 5.1
1226 * MidiMan M Audio Revolution 7.1
1227 * MidiMan M Audio Audiophile 192
1229 * TerraTec Aureon 5.1 Sky
1230 * TerraTec Aureon 7.1 Space
1231 * TerraTec Aureon 7.1 Universe
1234 * AudioTrak Prodigy 7.1
1235 * AudioTrak Prodigy 7.1 LT
1236 * AudioTrak Prodigy 7.1 XT
1237 * AudioTrak Prodigy 7.1 HIFI
1238 * AudioTrak Prodigy 7.1 HD2
1239 * AudioTrak Prodigy 192
1241 * Albatron K8X800 Pro II
1242 * Chaintech ZNF3-150
1243 * Chaintech ZNF3-250
1250 * Hercules Fortissimo IV
1251 * EGO-SYS WaveTerminal 192M
1253 model - Use the given board model, one of the following:
1254 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1255 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1256 juli, aureon51, aureon71, universe, ap192, k8x800,
1257 phase22, phase28, ms300, av710, se200pci, se90pci,
1258 fortissimo4, sn25p, WT192M
1260 This module supports multiple cards and autoprobe.
1262 Note: The supported board is detected by reading EEPROM or PCI
1263 SSID (if EEPROM isn't available). You can override the
1264 model by passing "model" module option in case that the
1265 driver isn't configured properly or you want to try another
1271 Module for Echoaudio Indigo
1273 This module supports multiple cards.
1274 The driver requires the firmware loader support on kernel.
1279 Module for Echoaudio Indigo DJ
1281 This module supports multiple cards.
1282 The driver requires the firmware loader support on kernel.
1287 Module for Echoaudio Indigo IO
1289 This module supports multiple cards.
1290 The driver requires the firmware loader support on kernel.
1295 Module for AC'97 motherboards from Intel and compatibles.
1296 * Intel i810/810E, i815, i820, i830, i84x, MX440
1297 ICH5, ICH6, ICH7, 6300ESB, ESB2
1298 * SiS 7012 (SiS 735)
1299 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1301 * AMD AMD768, AMD8111
1304 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1305 ac97_quirk - AC'97 workaround for strange hardware
1306 See "AC97 Quirk Option" section below.
1307 buggy_irq - Enable workaround for buggy interrupts on some
1308 motherboards (default yes on nForce chips,
1310 buggy_semaphore - Enable workaround for hardwares with buggy
1311 semaphores (e.g. on some ASUS laptops)
1313 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1314 from the controller chip
1315 (0 = off, 1 = on, -1 = default)
1317 This module supports one chip and autoprobe.
1319 Note: the latest driver supports auto-detection of chip clock.
1320 if you still encounter too fast playback, specify the clock
1321 explicitly via the module option "ac97_clock=41194".
1323 Joystick/MIDI ports are not supported by this driver. If your
1324 motherboard has these devices, use the ns558 or snd-mpu401
1325 modules, respectively.
1327 The power-management is supported.
1329 Module snd-intel8x0m
1330 --------------------
1332 Module for Intel ICH (i8x0) chipset MC97 modems.
1333 * Intel i810/810E, i815, i820, i830, i84x, MX440
1335 * SiS 7013 (SiS 735)
1336 * NVidia NForce, NForce2, NForce2s, NForce3
1340 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1342 This module supports one card and autoprobe.
1344 Note: The default index value of this module is -2, i.e. the first
1347 The power-management is supported.
1349 Module snd-interwave
1350 --------------------
1352 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1353 and other sound cards based on AMD InterWave (tm) chip.
1355 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1356 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1357 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1358 effect - 1 = InterWave effects enable (default 0);
1360 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1362 with isapnp=0, the following options are available:
1364 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1365 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1366 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1367 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1369 This module supports multiple cards, autoprobe and ISA PnP.
1371 Module snd-interwave-stb
1372 ------------------------
1374 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1375 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1376 circuit for extended control of bass, treble and master volume.
1378 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1379 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1380 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1381 effect - 1 = InterWave effects enable (default 0);
1383 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1385 with isapnp=0, the following options are available:
1387 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1388 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1389 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1390 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1391 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1393 This module supports multiple cards, autoprobe and ISA PnP.
1398 Module for Korg 1212 IO PCI card
1400 This module supports multiple cards.
1405 Module for Echoaudio Layla20
1407 This module supports multiple cards.
1408 The driver requires the firmware loader support on kernel.
1413 Module for Echoaudio Layla24
1415 This module supports multiple cards.
1416 The driver requires the firmware loader support on kernel.
1421 Module for Allegro/Maestro3 chips
1423 external_amp - enable external amp (enabled by default)
1424 amp_gpio - GPIO pin number for external amp (0-15) or
1425 -1 for default pin (8 for allegro, 1 for
1428 This module supports autoprobe and multiple chips.
1430 Note: the binding of amplifier is dependent on hardware.
1431 If there is no sound even though all channels are unmuted, try to
1432 specify other gpio connection via amp_gpio option.
1433 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1436 The power-management is supported.
1441 Module for Echoaudio Mia
1443 This module supports multiple cards.
1444 The driver requires the firmware loader support on kernel.
1449 Module for Miro soundcards: miroSOUND PCM 1 pro,
1451 miroSOUND PCM 20 Radio.
1453 port - Port # (0x530,0x604,0xe80,0xf40)
1454 irq - IRQ # (5,7,9,10,11)
1455 dma1 - 1st dma # (0,1,3)
1456 dma2 - 2nd dma # (0,1)
1457 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1458 mpu_irq - MPU-401 irq # (5,7,9,10)
1459 fm_port - FM Port # (0x388)
1460 wss - enable WSS mode
1461 ide - enable onboard ide support
1466 Module for Digigram miXart8 sound cards.
1468 This module supports multiple cards.
1469 Note: One miXart8 board will be represented as 4 alsa cards.
1470 See MIXART.txt for details.
1472 When the driver is compiled as a module and the hotplug firmware
1473 is supported, the firmware data is loaded via hotplug automatically.
1474 Install the necessary firmware files in alsa-firmware package.
1475 When no hotplug fw loader is available, you need to load the
1476 firmware via mixartloader utility in alsa-tools package.
1481 Module for Echoaudio Mona
1483 This module supports multiple cards.
1484 The driver requires the firmware loader support on kernel.
1489 Module for MPU-401 UART devices.
1491 port - port number or -1 (disable)
1492 irq - IRQ number or -1 (disable)
1493 pnp - PnP detection - 0 = disable, 1 = enable (default)
1495 This module supports multiple devices and PnP.
1500 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1503 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1504 irq - IRQ # for MTPAV (7,5, default=7)
1505 hwports - number of supported hardware ports, default=8.
1507 Module supports only 1 card. This module has no enable option.
1512 Module for Ego Systems (ESI) Miditerminal 4140
1514 This module supports multiple devices.
1515 Requires parport (CONFIG_PARPORT).
1520 Module for NeoMagic NM256AV/ZX chips
1522 playback_bufsize - max playback frame size in kB (4-128kB)
1523 capture_bufsize - max capture frame size in kB (4-128kB)
1524 force_ac97 - 0 or 1 (disabled by default)
1525 buffer_top - specify buffer top address
1526 use_cache - 0 or 1 (disabled by default)
1527 vaio_hack - alias buffer_top=0x25a800
1528 reset_workaround - enable AC97 RESET workaround for some laptops
1529 reset_workaround2 - enable extended AC97 RESET workaround for some
1532 This module supports one chip and autoprobe.
1534 The power-management is supported.
1536 Note: on some notebooks the buffer address cannot be detected
1537 automatically, or causes hang-up during initialization.
1538 In such a case, specify the buffer top address explicitly via
1539 the buffer_top option.
1541 Sony F250: buffer_top=0x25a800
1542 Sony F270: buffer_top=0x272800
1543 The driver supports only ac97 codec. It's possible to force
1544 to initialize/use ac97 although it's not detected. In such a
1545 case, use force_ac97=1 option - but *NO* guarantee whether it
1548 Note: The NM256 chip can be linked internally with non-AC97
1549 codecs. This driver supports only the AC97 codec, and won't work
1550 with machines with other (most likely CS423x or OPL3SAx) chips,
1551 even though the device is detected in lspci. In such a case, try
1552 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1553 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1554 and proper hardware parameters in the case without ISA PnP.
1556 Note: some laptops need a workaround for AC97 RESET. For the
1557 known hardware like Dell Latitude LS and Sony PCG-F305, this
1558 workaround is enabled automatically. For other laptops with a
1559 hard freeze, you can try reset_workaround=1 option.
1561 Note: Dell Latitude CSx laptops have another problem regarding
1562 AC97 RESET. On these laptops, reset_workaround2 option is
1563 turned on as default. This option is worth to try if the
1564 previous reset_workaround option doesn't help.
1566 Note: This driver is really crappy. It's a porting from the
1567 OSS driver, which is a result of black-magic reverse engineering.
1568 The detection of codec will fail if the driver is loaded *after*
1569 X-server as described above. You might be able to force to load
1570 the module, but it may result in hang-up. Hence, make sure that
1571 you load this module *before* X if you encounter this kind of
1577 Module for Yamaha OPL3-SA2/SA3 sound cards.
1579 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1581 with isapnp=0, the following options are available:
1583 port - control port # for OPL3-SA chip (0x370)
1584 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1585 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1586 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1587 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1588 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1589 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1590 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1592 This module supports multiple cards and ISA PnP. It does not support
1593 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1595 The power-management is supported.
1597 Module snd-opti92x-ad1848
1598 -------------------------
1600 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1601 Module works with OAK Mozart cards as well.
1603 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1605 with isapnp=0, the following options are available:
1607 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1608 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1609 fm_port - port # for OPL3 device (0x388)
1610 irq - IRQ # for WSS chip (5,7,9,10,11)
1611 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1612 dma1 - first DMA # for WSS chip (0,1,3)
1614 This module supports only one card, autoprobe and PnP.
1616 Module snd-opti92x-cs4231
1617 -------------------------
1619 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1621 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1623 with isapnp=0, the following options are available:
1625 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1626 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1627 fm_port - port # for OPL3 device (0x388)
1628 irq - IRQ # for WSS chip (5,7,9,10,11)
1629 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1630 dma1 - first DMA # for WSS chip (0,1,3)
1631 dma2 - second DMA # for WSS chip (0,1,3)
1633 This module supports only one card, autoprobe and PnP.
1638 Module for sound cards based on OPTi 82c93x chips.
1640 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1642 with isapnp=0, the following options are available:
1644 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1645 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1646 fm_port - port # for OPL3 device (0x388)
1647 irq - IRQ # for WSS chip (5,7,9,10,11)
1648 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1649 dma1 - first DMA # for WSS chip (0,1,3)
1650 dma2 - second DMA # for WSS chip (0,1,3)
1652 This module supports only one card, autoprobe and PnP.
1657 Module for sound cards based on the C-Media CMI8788 chip:
1659 * AuzenTech X-Meridian
1661 * Club3D Theatron DTS
1663 * Razer Barracuda AC-1
1666 This module supports autoprobe and multiple cards.
1671 Module for internal PC-Speaker.
1673 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1675 This module supports system beeps, some kind of PCM playback and
1676 even a few mixer controls.
1681 Module for Digigram PCXHR boards
1683 This module supports multiple cards.
1685 Module snd-portman2x4
1686 ---------------------
1688 Module for Midiman Portman 2x4 parallel port MIDI interface
1690 This module supports multiple cards.
1692 Module snd-powermac (on ppc only)
1693 ---------------------------------
1695 Module for PowerMac, iMac and iBook on-board soundchips
1697 enable_beep - enable beep using PCM (enabled as default)
1699 Module supports autoprobe a chip.
1701 Note: the driver may have problems regarding endianess.
1703 The power-management is supported.
1705 Module snd-pxa2xx-ac97 (on arm only)
1706 ------------------------------------
1708 Module for AC97 driver for the Intel PXA2xx chip
1710 For ARM architecture only.
1712 The power-management is supported.
1717 Module for Conexant Riptide chip
1719 joystick_port - Joystick port # (default: 0x200)
1720 mpu_port - MPU401 port # (default: 0x330)
1721 opl3_port - OPL3 port # (default: 0x388)
1723 This module supports multiple cards.
1724 The driver requires the firmware loader support on kernel.
1725 You need to install the firmware file "riptide.hex" to the standard
1726 firmware path (e.g. /lib/firmware).
1731 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1732 Prodif96 and Prodif Gold) sound cards.
1734 This module supports multiple cards.
1739 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1741 This module supports multiple cards.
1746 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1748 precise_ptr - Enable precise pointer (doesn't work reliably).
1751 This module supports multiple cards.
1753 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1754 module did formerly. It will allocate the buffers in advance
1755 when any RME9652 cards are found. To make the buffer
1756 allocation sure, load snd-page-alloc module in the early
1757 stage of boot sequence. See "Early Buffer Allocation"
1760 Module snd-sa11xx-uda1341 (on arm only)
1761 ---------------------------------------
1763 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1765 Module supports only one card.
1766 Module has no enable and index options.
1768 The power-management is supported.
1773 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1777 port - port # for SB DSP chip (0x220,0x240,0x260)
1778 irq - IRQ # for SB DSP chip (5,7,9,10)
1779 dma8 - DMA # for SB DSP chip (1,3)
1781 This module supports multiple cards and autoprobe.
1783 The power-management is supported.
1785 Module snd-sb16 and snd-sbawe
1786 -----------------------------
1788 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1789 SoundBlaster AWE 32 (PnP),
1790 SoundBlaster AWE 64 PnP
1792 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1793 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1794 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1796 with isapnp=0, the following options are available:
1798 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1799 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1800 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1801 (snd-sbawe module only)
1802 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1803 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1804 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1806 This module supports multiple cards, autoprobe and ISA PnP.
1808 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1809 disable 16bit DMA with dma16 = -1 module parameter.
1810 Also, all Sound Blaster 16 type cards can operate in 16-bit
1811 half duplex mode through 8-bit DMA channel by disabling their
1814 The power-management is supported.
1819 Module for Gallant SC-6000 soundcard.
1821 port - Port # (0x220 or 0x240)
1822 mss_port - MSS Port # (0x530 or 0xe80)
1823 irq - IRQ # (5,7,9,10,11)
1824 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1827 This module supports multiple cards.
1829 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1834 Module for Aztech Sound Galaxy sound card.
1836 sbport - Port # for SB16 interface (0x220,0x240)
1837 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1838 irq - IRQ # (7,9,10,11)
1841 This module supports multiple cards.
1843 The power-management is supported.
1848 Module for ENSONIQ SoundScape PnP cards.
1850 port - Port # (PnP setup)
1851 wss_port - WSS Port # (PnP setup)
1852 irq - IRQ # (PnP setup)
1853 mpu_irq - MPU-401 IRQ # (PnP setup)
1854 dma - DMA # (PnP setup)
1855 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1857 This module supports multiple cards. ISA PnP must be enabled.
1858 You need sscape_ctl tool in alsa-tools package for loading
1861 Module snd-sun-amd7930 (on sparc only)
1862 --------------------------------------
1864 Module for AMD7930 sound chips found on Sparcs.
1866 This module supports multiple cards.
1868 Module snd-sun-cs4231 (on sparc only)
1869 -------------------------------------
1871 Module for CS4231 sound chips found on Sparcs.
1873 This module supports multiple cards.
1875 Module snd-sun-dbri (on sparc only)
1876 -----------------------------------
1878 Module for DBRI sound chips found on Sparcs.
1880 This module supports multiple cards.
1882 Module snd-wavefront
1883 --------------------
1885 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1887 use_cs4232_midi - Use CS4232 MPU-401 interface
1888 (inaccessibly located inside your computer)
1889 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1891 with isapnp=0, the following options are available:
1893 cs4232_pcm_port - Port # for CS4232 PCM interface.
1894 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1895 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1896 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1897 ics2115_port - Port # for ICS2115
1898 ics2115_irq - IRQ # for ICS2115
1899 fm_port - FM OPL-3 Port #
1900 dma1 - DMA1 # for CS4232 PCM interface.
1901 dma2 - DMA2 # for CS4232 PCM interface.
1903 The below are options for wavefront_synth features:
1904 wf_raw - Assume that we need to boot the OS (default:no)
1905 If yes, then during driver loading, the state of the board is
1906 ignored, and we reset the board and load the firmware anyway.
1907 fx_raw - Assume that the FX process needs help (default:yes)
1908 If false, we'll leave the FX processor in whatever state it is
1909 when the driver is loaded. The default is to download the
1910 microprogram and associated coefficients to set it up for
1911 "default" operation, whatever that means.
1912 debug_default - Debug parameters for card initialization
1913 wait_usecs - How long to wait without sleeping, usecs
1915 This magic number seems to give pretty optimal throughput
1916 based on my limited experimentation.
1917 If you want to play around with it and find a better value, be
1918 my guest. Remember, the idea is to get a number that causes us
1919 to just busy wait for as many WaveFront commands as possible,
1920 without coming up with a number so large that we hog the whole
1922 Specifically, with this number, out of about 134,000 status
1923 waits, only about 250 result in a sleep.
1924 sleep_interval - How long to sleep when waiting for reply
1926 sleep_tries - How many times to try sleeping during a wait
1928 ospath - Pathname to processed ICS2115 OS firmware
1929 (default:wavefront.os)
1930 The path name of the ISC2115 OS firmware. In the recent
1931 version, it's handled via firmware loader framework, so it
1932 must be installed in the proper path, typically,
1934 reset_time - How long to wait for a reset to take effect
1936 ramcheck_time - How many seconds to wait for the RAM test
1938 osrun_time - How many seconds to wait for the ICS2115 OS
1941 This module supports multiple cards and ISA PnP.
1943 Note: the firmware file "wavefront.os" was located in the earlier
1944 version in /etc. Now it's loaded via firmware loader, and
1945 must be in the proper firmware path, such as /lib/firmware.
1946 Copy (or symlink) the file appropriately if you get an error
1947 regarding firmware downloading after upgrading the kernel.
1949 Module snd-sonicvibes
1950 ---------------------
1952 Module for S3 SonicVibes PCI sound cards.
1953 * PINE Schubert 32 PCI
1955 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1956 - SoundCard must have onboard SRAM for this.
1957 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1959 This module supports multiple cards and autoprobe.
1961 Module snd-serial-u16550
1962 ------------------------
1964 Module for UART16550A serial MIDI ports.
1966 port - port # for UART16550A chip
1967 irq - IRQ # for UART16550A chip, -1 = poll mode
1968 speed - speed in bauds (9600,19200,38400,57600,115200)
1970 base - base for divisor in bauds (57600,115200,230400,460800)
1972 outs - number of MIDI ports in a serial port (1-4)
1974 adaptor - Type of adaptor.
1975 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1976 3 = MS-124W M/B, 4 = Generic
1978 This module supports multiple cards. This module does not support autoprobe
1979 thus the main port must be specified!!! Other options are optional.
1984 Module for Trident 4DWave DX/NX sound cards.
1985 * Best Union Miss Melody 4DWave PCI
1987 * Warpspeed ONSpeed 4DWave PCI
1990 * CHIC True Sound 4Dwave
1991 * Shark Predator4D-PCI
1992 * Jaton SonicWave 4D
1993 * SiS SI7018 PCI Audio
1994 * Hoontech SoundTrack Digital 4DWave NX
1996 pcm_channels - max channels (voices) reserved for PCM
1997 wavetable_size - max wavetable size in kB (4-?kb)
1999 This module supports multiple cards and autoprobe.
2001 The power-management is supported.
2003 Module snd-usb-audio
2004 --------------------
2006 Module for USB audio and USB MIDI devices.
2008 vid - Vendor ID for the device (optional)
2009 pid - Product ID for the device (optional)
2010 nrpacks - Max. number of packets per URB (default: 8)
2011 async_unlink - Use async unlink mode (default: yes)
2012 device_setup - Device specific magic number (optional)
2013 - Influence depends on the device
2015 ignore_ctl_error - Ignore any USB-controller regarding mixer
2016 interface (default: no)
2018 This module supports multiple devices, autoprobe and hotplugging.
2020 NB: nrpacks parameter can be modified dynamically via sysfs.
2021 Don't put the value over 20. Changing via sysfs has no sanity
2023 NB: async_unlink=0 would cause Oops. It remains just for
2024 debugging purpose (if any).
2025 NB: ignore_ctl_error=1 may help when you get an error at accessing
2026 the mixer element such as URB error -22. This happens on some
2027 buggy USB device or the controller.
2029 Module snd-usb-caiaq
2030 --------------------
2032 Module for caiaq UB audio interfaces,
2033 * Native Instruments RigKontrol2
2034 * Native Instruments Kore Controller
2035 * Native Instruments Audio Kontrol 1
2036 * Native Instruments Audio 8 DJ
2038 This module supports multiple devices, autoprobe and hotplugging.
2040 Module snd-usb-usx2y
2041 --------------------
2043 Module for Tascam USB US-122, US-224 and US-428 devices.
2045 This module supports multiple devices, autoprobe and hotplugging.
2047 Note: you need to load the firmware via usx2yloader utility included
2048 in alsa-tools and alsa-firmware packages.
2053 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2054 8233A, 8233C, 8235, 8237 (south) bridge.
2056 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2058 joystick - Enable joystick (default off) [VIA686A/686B only]
2059 ac97_clock - AC'97 codec clock base (default 48000Hz)
2060 dxs_support - support DXS channels,
2061 0 = auto (default), 1 = enable, 2 = disable,
2062 3 = 48k only, 4 = no VRA, 5 = enable any sample
2063 rate and different sample rates on different
2065 [VIA8233/C, 8235, 8237 only]
2066 ac97_quirk - AC'97 workaround for strange hardware
2067 See "AC97 Quirk Option" section below.
2069 This module supports one chip and autoprobe.
2071 Note: on some SMP motherboards like MSI 694D the interrupts might
2072 not be generated properly. In such a case, please try to
2073 set the SMP (or MPS) version on BIOS to 1.1 instead of
2074 default value 1.4. Then the interrupt number will be
2075 assigned under 15. You might also upgrade your BIOS.
2077 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2078 channels as the first PCM. On these channels, up to 4
2079 streams can be played at the same time, and the controller
2080 can perform sample rate conversion with separate rates for
2082 As default (dxs_support = 0), 48k fixed rate is chosen
2083 except for the known devices since the output is often
2084 noisy except for 48k on some mother boards due to the
2086 Please try once dxs_support=5 and if it works on other
2087 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2088 know the PCI subsystem vendor/device id's (output of
2090 If dxs_support=5 does not work, try dxs_support=4; if it
2091 doesn't work too, try dxs_support=1. (dxs_support=1 is
2092 usually for old motherboards. The correct implemented
2093 board should work with 4 or 5.) If it still doesn't
2094 work and the default setting is ok, dxs_support=3 is the
2095 right choice. If the default setting doesn't work at all,
2096 try dxs_support=2 to disable the DXS channels.
2097 In any cases, please let us know the result and the
2098 subsystem vendor/device ids. See "Links and Addresses"
2101 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2102 additionally. The mpu_port option is for VIA686 chips only.
2104 The power-management is supported.
2106 Module snd-via82xx-modem
2107 ------------------------
2109 Module for VIA82xx AC97 modem
2111 ac97_clock - AC'97 codec clock base (default 48000Hz)
2113 This module supports one card and autoprobe.
2115 Note: The default index value of this module is -2, i.e. the first
2118 The power-management is supported.
2123 Module for virtual rawmidi devices.
2124 This module creates virtual rawmidi devices which communicate
2125 to the corresponding ALSA sequencer ports.
2127 midi_devs - MIDI devices # (1-4, default=4)
2129 This module supports multiple cards.
2134 Module for sound cards based on the Asus AV100/AV200 chips,
2135 i.e., Xonar D1, DX, D2, D2X and HDAV1.3 (Deluxe).
2137 This module supports autoprobe and multiple cards.
2142 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2144 mic - Enable Microphone on V222 Mic (NYI)
2145 ibl - Capture IBL size. (default = 0, minimum size)
2147 This module supports multiple cards.
2149 When the driver is compiled as a module and the hotplug firmware
2150 is supported, the firmware data is loaded via hotplug automatically.
2151 Install the necessary firmware files in alsa-firmware package.
2152 When no hotplug fw loader is available, you need to load the
2153 firmware via vxloader utility in alsa-tools package. To invoke
2154 vxloader automatically, add the following to /etc/modprobe.conf
2156 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2158 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2159 /etc/modules.conf, instead.)
2160 IBL size defines the interrupts period for PCM. The smaller size
2161 gives smaller latency but leads to more CPU consumption, too.
2162 The size is usually aligned to 126. As default (=0), the smallest
2163 size is chosen. The possible IBL values can be found in
2164 /proc/asound/cardX/vx-status proc file.
2166 The power-management is supported.
2171 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2173 ibl - Capture IBL size. (default = 0, minimum size)
2175 This module supports multiple cards. The module is compiled only when
2176 PCMCIA is supported on kernel.
2178 With the older 2.6.x kernel, to activate the driver via the card
2179 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2180 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2181 longer require a config file.
2183 When the driver is compiled as a module and the hotplug firmware
2184 is supported, the firmware data is loaded via hotplug automatically.
2185 Install the necessary firmware files in alsa-firmware package.
2186 When no hotplug fw loader is available, you need to load the
2187 firmware via vxloader utility in alsa-tools package.
2189 About capture IBL, see the description of snd-vx222 module.
2191 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2194 The power-management is supported.
2199 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2201 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2202 1 (auto-detect for YMF744/754 only)
2203 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2204 1 (auto-detect for YMF744/754 only)
2205 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2207 rear_switch - enable shared rear/line-in switch (bool)
2209 This module supports autoprobe and multiple chips.
2211 The power-management is supported.
2213 Module snd-pdaudiocf
2214 --------------------
2216 Module for Sound Core PDAudioCF sound card.
2218 The power-management is supported.
2224 The ac97_quirk option is used to enable/override the workaround for
2225 specific devices on drivers for on-board AC'97 controllers like
2226 snd-intel8x0. Some hardware have swapped output pins between Master
2227 and Headphone, or Surround (thanks to confusion of AC'97
2228 specifications from version to version :-)
2230 The driver provides the auto-detection of known problematic devices,
2231 but some might be unknown or wrongly detected. In such a case, pass
2232 the proper value with this option.
2234 The following strings are accepted:
2235 - default Don't override the default setting
2236 - none Disable the quirk
2237 - hp_only Bind Master and Headphone controls as a single control
2238 - swap_hp Swap headphone and master controls
2239 - swap_surround Swap master and surround controls
2240 - ad_sharing For AD1985, turn on OMS bit and use headphone
2241 - alc_jack For ALC65x, turn on the jack sense mode
2242 - inv_eapd Inverted EAPD implementation
2243 - mute_led Bind EAPD bit for turning on/off mute LED
2245 For backward compatibility, the corresponding integer value -1, 0,
2246 ... are accepted, too.
2248 For example, if "Master" volume control has no effect on your device
2249 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2252 Configuring Non-ISAPNP Cards
2253 ============================
2255 When the kernel is configured with ISA-PnP support, the modules
2256 supporting the isapnp cards will have module options "isapnp".
2257 If this option is set, *only* the ISA-PnP devices will be probed.
2258 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2259 together with the proper i/o and irq configuration.
2261 When the kernel is configured without ISA-PnP support, isapnp option
2262 will be not built in.
2265 Module Autoloading Support
2266 ==========================
2268 The ALSA drivers can be loaded automatically on demand by defining
2269 module aliases. The string 'snd-card-%1' is requested for ALSA native
2270 devices where %i is sound card number from zero to seven.
2272 To auto-load an ALSA driver for OSS services, define the string
2273 'sound-slot-%i' where %i means the slot number for OSS, which
2274 corresponds to the card index of ALSA. Usually, define this
2275 as the same card module.
2277 An example configuration for a single emu10k1 card is like below:
2278 ----- /etc/modprobe.conf
2279 alias snd-card-0 snd-emu10k1
2280 alias sound-slot-0 snd-emu10k1
2281 ----- /etc/modprobe.conf
2283 The available number of auto-loaded sound cards depends on the module
2284 option "cards_limit" of snd module. As default it's set to 1.
2285 To enable the auto-loading of multiple cards, specify the number of
2286 sound cards in that option.
2288 When multiple cards are available, it'd better to specify the index
2289 number for each card via module option, too, so that the order of
2290 cards is kept consistent.
2292 An example configuration for two sound cards is like below:
2294 ----- /etc/modprobe.conf
2296 options snd cards_limit=2
2297 alias snd-card-0 snd-interwave
2298 alias snd-card-1 snd-ens1371
2299 options snd-interwave index=0
2300 options snd-ens1371 index=1
2302 alias sound-slot-0 snd-interwave
2303 alias sound-slot-1 snd-ens1371
2304 ----- /etc/modprobe.conf
2306 In this example, the interwave card is always loaded as the first card
2307 (index 0) and ens1371 as the second (index 1).
2309 Alternative (and new) way to fixate the slot assignment is to use
2310 "slots" option of snd module. In the case above, specify like the
2313 options snd slots=snd-interwave,snd-ens1371
2315 Then, the first slot (#0) is reserved for snd-interwave driver, and
2316 the second (#1) for snd-ens1371. You can omit index option in each
2317 driver if slots option is used (although you can still have them at
2318 the same time as long as they don't conflict).
2320 The slots option is especially useful for avoiding the possible
2321 hot-plugging and the resultant slot conflict. For example, in the
2322 case above again, the first two slots are already reserved. If any
2323 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2324 snd-ens1371, it will be assigned to the third or later slot.
2326 When a module name is given with '!', the slot will be given for any
2327 modules but that name. For example, "slots=!snd-pcsp" will reserve
2328 the first slot for any modules but snd-pcsp.
2331 ALSA PCM devices to OSS devices mapping
2332 =======================================
2334 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2335 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2336 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2337 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2338 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2339 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2340 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2341 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2342 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2344 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2345 sound card number and second means device number. The ALSA devices
2346 have either 'c' or 'p' suffix indicating the direction, capture and
2347 playback, respectively.
2349 Please note that the device mapping above may be varied via the module
2350 options of snd-pcm-oss module.
2353 Proc interfaces (/proc/asound)
2354 ==============================
2356 /proc/asound/card#/pcm#[cp]/oss
2357 -------------------------------
2358 String "erase" - erase all additional informations about OSS applications
2359 String "<app_name> <fragments> <fragment_size> [<options>]"
2361 <app_name> - name of application with (higher priority) or without path
2362 <fragments> - number of fragments or zero if auto
2363 <fragment_size> - size of fragment in bytes or zero if auto
2364 <options> - optional parameters
2365 - disable the application tries to open a pcm device for
2366 this channel but does not want to use it.
2367 (Cause a bug or mmap needs)
2368 It's good for Quake etc...
2369 - direct don't use plugins
2370 - block force block mode (rvplayer)
2371 - non-block force non-block mode
2372 - whole-frag write only whole fragments (optimization affecting
2374 - no-silence do not fill silence ahead to avoid clicks
2375 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2376 instead of filled blocks
2378 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2379 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2380 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2383 Early Buffer Allocation
2384 =======================
2386 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2387 sometimes it's too late to find such spaces when the driver module is
2388 actually loaded due to memory fragmentation. You can pre-allocate the
2389 PCM buffers by loading snd-page-alloc module and write commands to its
2390 proc file in prior, for example, in the early boot stage like
2391 /etc/init.d/*.local scripts.
2393 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2394 usage of page allocation. In writing, you can send the following
2395 commands to the snd-page-alloc driver:
2397 - add VENDOR DEVICE MASK SIZE BUFFERS
2399 VENDOR and DEVICE are PCI vendor and device IDs. They take
2400 integer numbers (0x prefix is needed for the hex).
2401 MASK is the PCI DMA mask. Pass 0 if not restricted.
2402 SIZE is the size of each buffer to allocate. You can pass
2403 k and m suffix for KB and MB. The max number is 16MB.
2404 BUFFERS is the number of buffers to allocate. It must be greater
2405 than 0. The max number is 4.
2409 This will erase the all pre-allocated buffers which are not in
2416 ALSA project homepage
2417 http://www.alsa-project.org
2419 ALSA Bug Tracking System
2420 https://bugtrack.alsa-project.org/bugs/
2423 mailto:alsa-devel@alsa-project.org
projects / karo-tx-linux.git / blob