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 ultra Samsung Q1 Ultra Vista model
836 lenovo-3000 Lenovo 3000 y410
838 basic fixed pin assignment w/o SPDIF
839 auto auto-config reading BIOS (default)
842 quanta-il1 Quanta IL1 mini-notebook
846 acer-aspire Acer Aspire One
847 dell Dell OEM laptops (Vostro 1200)
849 test for testing/debugging purpose, almost all controls can
850 adjusted. Appearing only when compiled with
852 auto auto-config reading BIOS (default)
857 eeepc-p703 ASUS Eeepc P703 P900A
858 eeepc-p901 ASUS Eeepc P901 S101
861 3stack-dig 3-stack (2-channel) with SPDIF
862 3stack-6ch 3-stack (6-channel)
863 3stack-6ch-dig 3-stack (6-channel) with SPDIF
864 6stack-dig 6-stack with SPDIF
865 lenovo-101e Lenovo laptop
866 eeepc-p701 ASUS Eeepc P701
867 eeepc-ep20 ASUS Eeepc EP20
879 auto auto-config reading BIOS (default)
882 3stack-dig 3-jack with SPDIF I/O
883 6stack-dig 6-jack digital with SPDIF I/O
885 targa Targa T8, MSI-1049 T8
888 macpro MacPro support
889 mbp3 Macbook Pro rev3
890 imac24 iMac 24'' with jack detection
892 auto auto-config reading BIOS (default)
895 3stack-dig 3-jack with SPDIF I/O
896 6stack-dig 6-jack digital with SPDIF I/O
897 3stack-6ch 3-jack 6-channel
898 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
899 6stack-dig-demo 6-jack digital for Intel demo board
900 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
901 acer-aspire Acer Aspire 9810
902 medion Medion Laptops
903 medion-md2 Medion MD2
905 targa-2ch-dig Targs/MSI with 2-channel
906 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
907 lenovo-101e Lenovo 101E
908 lenovo-nb0763 Lenovo NB0763
909 lenovo-ms7195-dig Lenovo MS7195
910 lenovo-sky Lenovo Sky
912 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
913 6stack-dell Dell machines with 6stack (Inspiron 530)
915 clevo-m720 Clevo M720 laptop series
916 fujitsu-pi2515 Fujitsu AMILO Pi2515
917 3stack-6ch-intel Intel DG33* boards
918 auto auto-config reading BIOS (default)
922 3stack-dig 3-jack with SPDIF I/O
923 6stack-dig 6-jack with SPDIF I/O
924 3stack-660 3-jack (for ALC660)
925 uniwill-m31 Uniwill M31 laptop
926 toshiba Toshiba laptop support
927 asus Asus laptop support
928 asus-laptop ASUS F2/F3 laptops
929 auto auto-config reading BIOS (default)
933 3stack-dig 3-jack with SPDIF OUT
934 6stack-dig 6-jack with SPDIF OUT
935 3stack-660 3-jack (for ALC660VD)
936 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
937 lenovo Lenovo 3000 C200
938 dallas Dallas laptops
940 auto auto-config reading BIOS (default)
943 minimal 3-jack in back
944 min_fp 3-jack in back, 2-jack in front
945 full 6-jack in back, 2-jack in front
946 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
947 allout 5-jack in back, 2-jack in front, SPDIF out
948 auto auto-config reading BIOS (default)
951 3stack 3-stack mode (default)
954 AD1884A / AD1883 / AD1984A / AD1984B
955 desktop 3-stack desktop (default)
956 laptop laptop with HP jack sensing
957 mobile mobile devices with HP jack sensing
958 thinkpad Lenovo Thinkpad X300
964 basic 3-jack (default)
966 thinkpad Lenovo Thinkpad T60/X60/Z60
973 basic default configuration
974 thinkpad Lenovo Thinkpad T61/X61
978 6stack 6-jack, separate surrounds (default)
979 3stack 3-stack, shared surrounds
980 laptop 2-channel only (FSC V2060, Samsung M50)
981 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
982 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
983 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
985 AD1988/AD1988B/AD1989A/AD1989B
987 6stack-dig ditto with SPDIF
989 3stack-dig ditto with SPDIF
990 laptop 3-jack with hp-jack automute
991 laptop-dig ditto with SPDIF
992 auto auto-config reading BIOS (default)
995 laptop-hpsense Laptop with HP sense (old model laptop)
996 laptop-micsense Laptop with Mic sense (old model fujitsu)
997 laptop-hpmicsense Laptop with HP and Mic senses
999 test for testing/debugging purpose, almost all controls
1000 can be adjusted. Appearing only when compiled with
1004 laptop Basic Laptop config
1005 laptop-hp Laptop config for some HP models (subdevice 30A5)
1006 laptop-eapd Laptop config with EAPD support
1007 test for testing/debugging purpose, almost all controls
1008 can be adjusted. Appearing only when compiled with
1012 laptop Basic Laptop config (default)
1013 hp HP Spartan laptop
1017 dell-d21 Dell (unknown)
1018 dell-d22 Dell (unknown)
1019 dell-d23 Dell (unknown)
1020 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
1021 dell-m22 Dell Latitude D620, Dell Latitude D820
1022 dell-m23 Dell XPS M1710, Dell Precision M90
1023 dell-m24 Dell Latitude 120L
1024 dell-m25 Dell Inspiron E1505n
1025 dell-m26 Dell Inspiron 1501
1026 dell-m27 Dell Inspiron E1705/9400
1027 gateway Gateway laptops with EAPD control
1028 panasonic Panasonic CF-74
1032 dell-m42 Dell (unknown)
1033 dell-m43 Dell Precision
1034 dell-m44 Dell Inspiron
1039 5stack D945 5stack + SPDIF
1040 intel-mac-v1 Intel Mac Type 1
1041 intel-mac-v2 Intel Mac Type 2
1042 intel-mac-v3 Intel Mac Type 3
1043 intel-mac-v4 Intel Mac Type 4
1044 intel-mac-v5 Intel Mac Type 5
1045 intel-mac-auto Intel Mac (detect type according to subsystem id)
1046 macmini Intel Mac Mini (equivalent with type 3)
1047 macbook Intel Mac Book (eq. type 5)
1048 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1049 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1050 imac-intel Intel iMac (eq. type 2)
1051 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1052 dell-d81 Dell (unknown)
1053 dell-d82 Dell (unknown)
1054 dell-m81 Dell (unknown)
1055 dell-m82 Dell XPS M1210
1058 ref Reference board, base config
1059 m2-2 Some Gateway MX series laptops
1060 m6 Some Gateway NX series laptops
1061 pa6 Gateway NX860 series
1063 STAC9227/9228/9229/927x
1066 5stack D965 5stack + SPDIF
1067 dell-3stack Dell Dimension E520
1068 dell-bios Fixes with Dell BIOS setup
1072 dell-m4-1 Dell desktops
1073 dell-m4-2 Dell desktops
1077 dell-m6 Dell desktops
1080 vaio Setup for VAIO FE550G/SZ110
1081 vaio-ar Setup for VAIO AR
1083 The model name "genric" is treated as a special case. When this
1084 model is given, the driver uses the generic codec parser without
1085 "codec-patch". It's sometimes good for testing and debugging.
1087 If the default configuration doesn't work and one of the above
1088 matches with your device, report it together with the PCI
1089 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1090 ML (see the section "Links and Addresses").
1092 power_save and power_save_controller options are for power-saving
1093 mode. See powersave.txt for details.
1095 Note 2: If you get click noises on output, try the module option
1096 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1097 register value without FIFO size correction as the current
1098 DMA pointer. position_fix=2 will make the driver to use
1099 the position buffer instead of reading SD_LPIB register.
1100 (Usually SD_LPLIB register is more accurate than the
1103 NB: If you get many "azx_get_response timeout" messages at
1104 loading, it's likely a problem of interrupts (e.g. ACPI irq
1105 routing). Try to boot with options like "pci=noacpi". Also, you
1106 can try "single_cmd=1" module option. This will switch the
1107 communication method between HDA controller and codecs to the
1108 single immediate commands instead of CORB/RIRB. Basically, the
1109 single command mode is provided only for BIOS, and you won't get
1110 unsolicited events, too. But, at least, this works independently
1111 from the irq. Remember this is a last resort, and should be
1112 avoided as much as possible...
1114 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1115 On some hardwares, you may need to add a proper probe_mask option
1116 to avoid the "azx_get_response timeout" problem above, instead.
1117 This occurs when the access to non-existing or non-working codec slot
1118 (likely a modem one) causes a stall of the communication via HD-audio
1119 bus. You can see which codec slots are probed by enabling
1120 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1121 proc files. Then limit the slots to probe by probe_mask option.
1122 For example, probe_mask=1 means to probe only the first slot, and
1123 probe_mask=4 means only the third slot.
1125 The power-management is supported.
1130 Module for RME Hammerfall DSP audio interface(s)
1132 This module supports multiple cards.
1134 Note: The firmware data can be automatically loaded via hotplug
1135 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1136 the firmware via hdsploader utility included in alsa-tools
1138 The firmware data is found in alsa-firmware package.
1140 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1141 module did formerly. It will allocate the buffers in advance
1142 when any HDSP cards are found. To make the buffer
1143 allocation sure, load snd-page-alloc module in the early
1144 stage of boot sequence. See "Early Buffer Allocation"
1150 Module for RME HDSP MADI board.
1152 precise_ptr - Enable precise pointer, or disable.
1153 line_outs_monitor - Send playback streams to analog outs by default.
1154 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1156 See hdspm.txt for details.
1161 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1163 This module supports autoprobe and multiple cards.
1168 Module for Envy24 (ICE1712) based PCI sound cards.
1169 * MidiMan M Audio Delta 1010
1170 * MidiMan M Audio Delta 1010LT
1171 * MidiMan M Audio Delta DiO 2496
1172 * MidiMan M Audio Delta 66
1173 * MidiMan M Audio Delta 44
1174 * MidiMan M Audio Delta 410
1175 * MidiMan M Audio Audiophile 2496
1178 * TerraTec EWX 24/96
1179 * TerraTec DMX 6Fire
1181 * Hoontech SoundTrack DSP 24
1182 * Hoontech SoundTrack DSP 24 Value
1183 * Hoontech SoundTrack DSP 24 Media 7.1
1184 * Event Electronics, EZ8
1186 * Lionstracs, Mediastaton
1189 model - Use the given board model, one of the following:
1190 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1191 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1192 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1193 phase88, mediastation
1194 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1195 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1196 in msec resolution, default value is 500 (0.5 sec)
1198 This module supports multiple cards and autoprobe. Note: The consumer part
1199 is not used with all Envy24 based cards (for example in the MidiMan Delta
1202 Note: The supported board is detected by reading EEPROM or PCI
1203 SSID (if EEPROM isn't available). You can override the
1204 model by passing "model" module option in case that the
1205 driver isn't configured properly or you want to try another
1211 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1212 * MidiMan M Audio Revolution 5.1
1213 * MidiMan M Audio Revolution 7.1
1214 * MidiMan M Audio Audiophile 192
1216 * TerraTec Aureon 5.1 Sky
1217 * TerraTec Aureon 7.1 Space
1218 * TerraTec Aureon 7.1 Universe
1221 * AudioTrak Prodigy 7.1
1222 * AudioTrak Prodigy 7.1 LT
1223 * AudioTrak Prodigy 7.1 XT
1224 * AudioTrak Prodigy 7.1 HIFI
1225 * AudioTrak Prodigy 7.1 HD2
1226 * AudioTrak Prodigy 192
1228 * Albatron K8X800 Pro II
1229 * Chaintech ZNF3-150
1230 * Chaintech ZNF3-250
1237 * Hercules Fortissimo IV
1238 * EGO-SYS WaveTerminal 192M
1240 model - Use the given board model, one of the following:
1241 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1242 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1243 juli, aureon51, aureon71, universe, ap192, k8x800,
1244 phase22, phase28, ms300, av710, se200pci, se90pci,
1245 fortissimo4, sn25p, WT192M
1247 This module supports multiple cards and autoprobe.
1249 Note: The supported board is detected by reading EEPROM or PCI
1250 SSID (if EEPROM isn't available). You can override the
1251 model by passing "model" module option in case that the
1252 driver isn't configured properly or you want to try another
1258 Module for Echoaudio Indigo
1260 This module supports multiple cards.
1261 The driver requires the firmware loader support on kernel.
1266 Module for Echoaudio Indigo DJ
1268 This module supports multiple cards.
1269 The driver requires the firmware loader support on kernel.
1274 Module for Echoaudio Indigo IO
1276 This module supports multiple cards.
1277 The driver requires the firmware loader support on kernel.
1282 Module for AC'97 motherboards from Intel and compatibles.
1283 * Intel i810/810E, i815, i820, i830, i84x, MX440
1284 ICH5, ICH6, ICH7, 6300ESB, ESB2
1285 * SiS 7012 (SiS 735)
1286 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1288 * AMD AMD768, AMD8111
1291 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1292 ac97_quirk - AC'97 workaround for strange hardware
1293 See "AC97 Quirk Option" section below.
1294 buggy_irq - Enable workaround for buggy interrupts on some
1295 motherboards (default yes on nForce chips,
1297 buggy_semaphore - Enable workaround for hardwares with buggy
1298 semaphores (e.g. on some ASUS laptops)
1300 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1301 from the controller chip
1302 (0 = off, 1 = on, -1 = default)
1304 This module supports one chip and autoprobe.
1306 Note: the latest driver supports auto-detection of chip clock.
1307 if you still encounter too fast playback, specify the clock
1308 explicitly via the module option "ac97_clock=41194".
1310 Joystick/MIDI ports are not supported by this driver. If your
1311 motherboard has these devices, use the ns558 or snd-mpu401
1312 modules, respectively.
1314 The power-management is supported.
1316 Module snd-intel8x0m
1317 --------------------
1319 Module for Intel ICH (i8x0) chipset MC97 modems.
1320 * Intel i810/810E, i815, i820, i830, i84x, MX440
1322 * SiS 7013 (SiS 735)
1323 * NVidia NForce, NForce2, NForce2s, NForce3
1327 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1329 This module supports one card and autoprobe.
1331 Note: The default index value of this module is -2, i.e. the first
1334 The power-management is supported.
1336 Module snd-interwave
1337 --------------------
1339 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1340 and other sound cards based on AMD InterWave (tm) chip.
1342 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1343 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1344 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1345 effect - 1 = InterWave effects enable (default 0);
1347 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1349 with isapnp=0, the following options are available:
1351 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1352 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1353 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1354 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1356 This module supports multiple cards, autoprobe and ISA PnP.
1358 Module snd-interwave-stb
1359 ------------------------
1361 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1362 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1363 circuit for extended control of bass, treble and master volume.
1365 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1366 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1367 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1368 effect - 1 = InterWave effects enable (default 0);
1370 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1372 with isapnp=0, the following options are available:
1374 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1375 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1376 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1377 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1378 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1380 This module supports multiple cards, autoprobe and ISA PnP.
1385 Module for Korg 1212 IO PCI card
1387 This module supports multiple cards.
1392 Module for Echoaudio Layla20
1394 This module supports multiple cards.
1395 The driver requires the firmware loader support on kernel.
1400 Module for Echoaudio Layla24
1402 This module supports multiple cards.
1403 The driver requires the firmware loader support on kernel.
1408 Module for Allegro/Maestro3 chips
1410 external_amp - enable external amp (enabled by default)
1411 amp_gpio - GPIO pin number for external amp (0-15) or
1412 -1 for default pin (8 for allegro, 1 for
1415 This module supports autoprobe and multiple chips.
1417 Note: the binding of amplifier is dependent on hardware.
1418 If there is no sound even though all channels are unmuted, try to
1419 specify other gpio connection via amp_gpio option.
1420 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1423 The power-management is supported.
1428 Module for Echoaudio Mia
1430 This module supports multiple cards.
1431 The driver requires the firmware loader support on kernel.
1436 Module for Miro soundcards: miroSOUND PCM 1 pro,
1438 miroSOUND PCM 20 Radio.
1440 port - Port # (0x530,0x604,0xe80,0xf40)
1441 irq - IRQ # (5,7,9,10,11)
1442 dma1 - 1st dma # (0,1,3)
1443 dma2 - 2nd dma # (0,1)
1444 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1445 mpu_irq - MPU-401 irq # (5,7,9,10)
1446 fm_port - FM Port # (0x388)
1447 wss - enable WSS mode
1448 ide - enable onboard ide support
1453 Module for Digigram miXart8 sound cards.
1455 This module supports multiple cards.
1456 Note: One miXart8 board will be represented as 4 alsa cards.
1457 See MIXART.txt for details.
1459 When the driver is compiled as a module and the hotplug firmware
1460 is supported, the firmware data is loaded via hotplug automatically.
1461 Install the necessary firmware files in alsa-firmware package.
1462 When no hotplug fw loader is available, you need to load the
1463 firmware via mixartloader utility in alsa-tools package.
1468 Module for Echoaudio Mona
1470 This module supports multiple cards.
1471 The driver requires the firmware loader support on kernel.
1476 Module for MPU-401 UART devices.
1478 port - port number or -1 (disable)
1479 irq - IRQ number or -1 (disable)
1480 pnp - PnP detection - 0 = disable, 1 = enable (default)
1482 This module supports multiple devices and PnP.
1487 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1490 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1491 irq - IRQ # for MTPAV (7,5, default=7)
1492 hwports - number of supported hardware ports, default=8.
1494 Module supports only 1 card. This module has no enable option.
1499 Module for Ego Systems (ESI) Miditerminal 4140
1501 This module supports multiple devices.
1502 Requires parport (CONFIG_PARPORT).
1507 Module for NeoMagic NM256AV/ZX chips
1509 playback_bufsize - max playback frame size in kB (4-128kB)
1510 capture_bufsize - max capture frame size in kB (4-128kB)
1511 force_ac97 - 0 or 1 (disabled by default)
1512 buffer_top - specify buffer top address
1513 use_cache - 0 or 1 (disabled by default)
1514 vaio_hack - alias buffer_top=0x25a800
1515 reset_workaround - enable AC97 RESET workaround for some laptops
1516 reset_workaround2 - enable extended AC97 RESET workaround for some
1519 This module supports one chip and autoprobe.
1521 The power-management is supported.
1523 Note: on some notebooks the buffer address cannot be detected
1524 automatically, or causes hang-up during initialization.
1525 In such a case, specify the buffer top address explicitly via
1526 the buffer_top option.
1528 Sony F250: buffer_top=0x25a800
1529 Sony F270: buffer_top=0x272800
1530 The driver supports only ac97 codec. It's possible to force
1531 to initialize/use ac97 although it's not detected. In such a
1532 case, use force_ac97=1 option - but *NO* guarantee whether it
1535 Note: The NM256 chip can be linked internally with non-AC97
1536 codecs. This driver supports only the AC97 codec, and won't work
1537 with machines with other (most likely CS423x or OPL3SAx) chips,
1538 even though the device is detected in lspci. In such a case, try
1539 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1540 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1541 and proper hardware parameters in the case without ISA PnP.
1543 Note: some laptops need a workaround for AC97 RESET. For the
1544 known hardware like Dell Latitude LS and Sony PCG-F305, this
1545 workaround is enabled automatically. For other laptops with a
1546 hard freeze, you can try reset_workaround=1 option.
1548 Note: Dell Latitude CSx laptops have another problem regarding
1549 AC97 RESET. On these laptops, reset_workaround2 option is
1550 turned on as default. This option is worth to try if the
1551 previous reset_workaround option doesn't help.
1553 Note: This driver is really crappy. It's a porting from the
1554 OSS driver, which is a result of black-magic reverse engineering.
1555 The detection of codec will fail if the driver is loaded *after*
1556 X-server as described above. You might be able to force to load
1557 the module, but it may result in hang-up. Hence, make sure that
1558 you load this module *before* X if you encounter this kind of
1564 Module for Yamaha OPL3-SA2/SA3 sound cards.
1566 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1568 with isapnp=0, the following options are available:
1570 port - control port # for OPL3-SA chip (0x370)
1571 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1572 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1573 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1574 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1575 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1576 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1577 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1579 This module supports multiple cards and ISA PnP. It does not support
1580 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1582 The power-management is supported.
1584 Module snd-opti92x-ad1848
1585 -------------------------
1587 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1588 Module works with OAK Mozart cards as well.
1590 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1592 with isapnp=0, the following options are available:
1594 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1595 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1596 fm_port - port # for OPL3 device (0x388)
1597 irq - IRQ # for WSS chip (5,7,9,10,11)
1598 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1599 dma1 - first DMA # for WSS chip (0,1,3)
1601 This module supports only one card, autoprobe and PnP.
1603 Module snd-opti92x-cs4231
1604 -------------------------
1606 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1608 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1610 with isapnp=0, the following options are available:
1612 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1613 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1614 fm_port - port # for OPL3 device (0x388)
1615 irq - IRQ # for WSS chip (5,7,9,10,11)
1616 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1617 dma1 - first DMA # for WSS chip (0,1,3)
1618 dma2 - second DMA # for WSS chip (0,1,3)
1620 This module supports only one card, autoprobe and PnP.
1625 Module for sound cards based on OPTi 82c93x chips.
1627 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1629 with isapnp=0, the following options are available:
1631 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1632 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1633 fm_port - port # for OPL3 device (0x388)
1634 irq - IRQ # for WSS chip (5,7,9,10,11)
1635 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1636 dma1 - first DMA # for WSS chip (0,1,3)
1637 dma2 - second DMA # for WSS chip (0,1,3)
1639 This module supports only one card, autoprobe and PnP.
1644 Module for sound cards based on the C-Media CMI8788 chip:
1646 * AuzenTech X-Meridian
1648 * Club3D Theatron DTS
1650 * Razer Barracuda AC-1
1653 This module supports autoprobe and multiple cards.
1658 Module for internal PC-Speaker.
1660 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1662 This module supports system beeps, some kind of PCM playback and
1663 even a few mixer controls.
1668 Module for Digigram PCXHR boards
1670 This module supports multiple cards.
1672 Module snd-portman2x4
1673 ---------------------
1675 Module for Midiman Portman 2x4 parallel port MIDI interface
1677 This module supports multiple cards.
1679 Module snd-powermac (on ppc only)
1680 ---------------------------------
1682 Module for PowerMac, iMac and iBook on-board soundchips
1684 enable_beep - enable beep using PCM (enabled as default)
1686 Module supports autoprobe a chip.
1688 Note: the driver may have problems regarding endianess.
1690 The power-management is supported.
1692 Module snd-pxa2xx-ac97 (on arm only)
1693 ------------------------------------
1695 Module for AC97 driver for the Intel PXA2xx chip
1697 For ARM architecture only.
1699 The power-management is supported.
1704 Module for Conexant Riptide chip
1706 joystick_port - Joystick port # (default: 0x200)
1707 mpu_port - MPU401 port # (default: 0x330)
1708 opl3_port - OPL3 port # (default: 0x388)
1710 This module supports multiple cards.
1711 The driver requires the firmware loader support on kernel.
1712 You need to install the firmware file "riptide.hex" to the standard
1713 firmware path (e.g. /lib/firmware).
1718 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1719 Prodif96 and Prodif Gold) sound cards.
1721 This module supports multiple cards.
1726 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1728 This module supports multiple cards.
1733 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1735 precise_ptr - Enable precise pointer (doesn't work reliably).
1738 This module supports multiple cards.
1740 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1741 module did formerly. It will allocate the buffers in advance
1742 when any RME9652 cards are found. To make the buffer
1743 allocation sure, load snd-page-alloc module in the early
1744 stage of boot sequence. See "Early Buffer Allocation"
1747 Module snd-sa11xx-uda1341 (on arm only)
1748 ---------------------------------------
1750 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1752 Module supports only one card.
1753 Module has no enable and index options.
1755 The power-management is supported.
1760 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1764 port - port # for SB DSP chip (0x220,0x240,0x260)
1765 irq - IRQ # for SB DSP chip (5,7,9,10)
1766 dma8 - DMA # for SB DSP chip (1,3)
1768 This module supports multiple cards and autoprobe.
1770 The power-management is supported.
1772 Module snd-sb16 and snd-sbawe
1773 -----------------------------
1775 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1776 SoundBlaster AWE 32 (PnP),
1777 SoundBlaster AWE 64 PnP
1779 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1780 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1781 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1783 with isapnp=0, the following options are available:
1785 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1786 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1787 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1788 (snd-sbawe module only)
1789 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1790 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1791 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1793 This module supports multiple cards, autoprobe and ISA PnP.
1795 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1796 disable 16bit DMA with dma16 = -1 module parameter.
1797 Also, all Sound Blaster 16 type cards can operate in 16-bit
1798 half duplex mode through 8-bit DMA channel by disabling their
1801 The power-management is supported.
1806 Module for Gallant SC-6000 soundcard.
1808 port - Port # (0x220 or 0x240)
1809 mss_port - MSS Port # (0x530 or 0xe80)
1810 irq - IRQ # (5,7,9,10,11)
1811 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1814 This module supports multiple cards.
1816 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1821 Module for Aztech Sound Galaxy sound card.
1823 sbport - Port # for SB16 interface (0x220,0x240)
1824 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1825 irq - IRQ # (7,9,10,11)
1828 This module supports multiple cards.
1830 The power-management is supported.
1835 Module for ENSONIQ SoundScape PnP cards.
1837 port - Port # (PnP setup)
1838 wss_port - WSS Port # (PnP setup)
1839 irq - IRQ # (PnP setup)
1840 mpu_irq - MPU-401 IRQ # (PnP setup)
1841 dma - DMA # (PnP setup)
1842 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1844 This module supports multiple cards. ISA PnP must be enabled.
1845 You need sscape_ctl tool in alsa-tools package for loading
1848 Module snd-sun-amd7930 (on sparc only)
1849 --------------------------------------
1851 Module for AMD7930 sound chips found on Sparcs.
1853 This module supports multiple cards.
1855 Module snd-sun-cs4231 (on sparc only)
1856 -------------------------------------
1858 Module for CS4231 sound chips found on Sparcs.
1860 This module supports multiple cards.
1862 Module snd-sun-dbri (on sparc only)
1863 -----------------------------------
1865 Module for DBRI sound chips found on Sparcs.
1867 This module supports multiple cards.
1869 Module snd-wavefront
1870 --------------------
1872 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1874 use_cs4232_midi - Use CS4232 MPU-401 interface
1875 (inaccessibly located inside your computer)
1876 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1878 with isapnp=0, the following options are available:
1880 cs4232_pcm_port - Port # for CS4232 PCM interface.
1881 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1882 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1883 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1884 ics2115_port - Port # for ICS2115
1885 ics2115_irq - IRQ # for ICS2115
1886 fm_port - FM OPL-3 Port #
1887 dma1 - DMA1 # for CS4232 PCM interface.
1888 dma2 - DMA2 # for CS4232 PCM interface.
1890 The below are options for wavefront_synth features:
1891 wf_raw - Assume that we need to boot the OS (default:no)
1892 If yes, then during driver loading, the state of the board is
1893 ignored, and we reset the board and load the firmware anyway.
1894 fx_raw - Assume that the FX process needs help (default:yes)
1895 If false, we'll leave the FX processor in whatever state it is
1896 when the driver is loaded. The default is to download the
1897 microprogram and associated coefficients to set it up for
1898 "default" operation, whatever that means.
1899 debug_default - Debug parameters for card initialization
1900 wait_usecs - How long to wait without sleeping, usecs
1902 This magic number seems to give pretty optimal throughput
1903 based on my limited experimentation.
1904 If you want to play around with it and find a better value, be
1905 my guest. Remember, the idea is to get a number that causes us
1906 to just busy wait for as many WaveFront commands as possible,
1907 without coming up with a number so large that we hog the whole
1909 Specifically, with this number, out of about 134,000 status
1910 waits, only about 250 result in a sleep.
1911 sleep_interval - How long to sleep when waiting for reply
1913 sleep_tries - How many times to try sleeping during a wait
1915 ospath - Pathname to processed ICS2115 OS firmware
1916 (default:wavefront.os)
1917 The path name of the ISC2115 OS firmware. In the recent
1918 version, it's handled via firmware loader framework, so it
1919 must be installed in the proper path, typically,
1921 reset_time - How long to wait for a reset to take effect
1923 ramcheck_time - How many seconds to wait for the RAM test
1925 osrun_time - How many seconds to wait for the ICS2115 OS
1928 This module supports multiple cards and ISA PnP.
1930 Note: the firmware file "wavefront.os" was located in the earlier
1931 version in /etc. Now it's loaded via firmware loader, and
1932 must be in the proper firmware path, such as /lib/firmware.
1933 Copy (or symlink) the file appropriately if you get an error
1934 regarding firmware downloading after upgrading the kernel.
1936 Module snd-sonicvibes
1937 ---------------------
1939 Module for S3 SonicVibes PCI sound cards.
1940 * PINE Schubert 32 PCI
1942 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1943 - SoundCard must have onboard SRAM for this.
1944 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1946 This module supports multiple cards and autoprobe.
1948 Module snd-serial-u16550
1949 ------------------------
1951 Module for UART16550A serial MIDI ports.
1953 port - port # for UART16550A chip
1954 irq - IRQ # for UART16550A chip, -1 = poll mode
1955 speed - speed in bauds (9600,19200,38400,57600,115200)
1957 base - base for divisor in bauds (57600,115200,230400,460800)
1959 outs - number of MIDI ports in a serial port (1-4)
1961 adaptor - Type of adaptor.
1962 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1963 3 = MS-124W M/B, 4 = Generic
1965 This module supports multiple cards. This module does not support autoprobe
1966 thus the main port must be specified!!! Other options are optional.
1971 Module for Trident 4DWave DX/NX sound cards.
1972 * Best Union Miss Melody 4DWave PCI
1974 * Warpspeed ONSpeed 4DWave PCI
1977 * CHIC True Sound 4Dwave
1978 * Shark Predator4D-PCI
1979 * Jaton SonicWave 4D
1980 * SiS SI7018 PCI Audio
1981 * Hoontech SoundTrack Digital 4DWave NX
1983 pcm_channels - max channels (voices) reserved for PCM
1984 wavetable_size - max wavetable size in kB (4-?kb)
1986 This module supports multiple cards and autoprobe.
1988 The power-management is supported.
1990 Module snd-usb-audio
1991 --------------------
1993 Module for USB audio and USB MIDI devices.
1995 vid - Vendor ID for the device (optional)
1996 pid - Product ID for the device (optional)
1997 nrpacks - Max. number of packets per URB (default: 8)
1998 async_unlink - Use async unlink mode (default: yes)
1999 device_setup - Device specific magic number (optional)
2000 - Influence depends on the device
2002 ignore_ctl_error - Ignore any USB-controller regarding mixer
2003 interface (default: no)
2005 This module supports multiple devices, autoprobe and hotplugging.
2007 NB: nrpacks parameter can be modified dynamically via sysfs.
2008 Don't put the value over 20. Changing via sysfs has no sanity
2010 NB: async_unlink=0 would cause Oops. It remains just for
2011 debugging purpose (if any).
2012 NB: ignore_ctl_error=1 may help when you get an error at accessing
2013 the mixer element such as URB error -22. This happens on some
2014 buggy USB device or the controller.
2016 Module snd-usb-caiaq
2017 --------------------
2019 Module for caiaq UB audio interfaces,
2020 * Native Instruments RigKontrol2
2021 * Native Instruments Kore Controller
2022 * Native Instruments Audio Kontrol 1
2023 * Native Instruments Audio 8 DJ
2025 This module supports multiple devices, autoprobe and hotplugging.
2027 Module snd-usb-usx2y
2028 --------------------
2030 Module for Tascam USB US-122, US-224 and US-428 devices.
2032 This module supports multiple devices, autoprobe and hotplugging.
2034 Note: you need to load the firmware via usx2yloader utility included
2035 in alsa-tools and alsa-firmware packages.
2040 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2041 8233A, 8233C, 8235, 8237 (south) bridge.
2043 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2045 joystick - Enable joystick (default off) [VIA686A/686B only]
2046 ac97_clock - AC'97 codec clock base (default 48000Hz)
2047 dxs_support - support DXS channels,
2048 0 = auto (default), 1 = enable, 2 = disable,
2049 3 = 48k only, 4 = no VRA, 5 = enable any sample
2050 rate and different sample rates on different
2052 [VIA8233/C, 8235, 8237 only]
2053 ac97_quirk - AC'97 workaround for strange hardware
2054 See "AC97 Quirk Option" section below.
2056 This module supports one chip and autoprobe.
2058 Note: on some SMP motherboards like MSI 694D the interrupts might
2059 not be generated properly. In such a case, please try to
2060 set the SMP (or MPS) version on BIOS to 1.1 instead of
2061 default value 1.4. Then the interrupt number will be
2062 assigned under 15. You might also upgrade your BIOS.
2064 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2065 channels as the first PCM. On these channels, up to 4
2066 streams can be played at the same time, and the controller
2067 can perform sample rate conversion with separate rates for
2069 As default (dxs_support = 0), 48k fixed rate is chosen
2070 except for the known devices since the output is often
2071 noisy except for 48k on some mother boards due to the
2073 Please try once dxs_support=5 and if it works on other
2074 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2075 know the PCI subsystem vendor/device id's (output of
2077 If dxs_support=5 does not work, try dxs_support=4; if it
2078 doesn't work too, try dxs_support=1. (dxs_support=1 is
2079 usually for old motherboards. The correct implemented
2080 board should work with 4 or 5.) If it still doesn't
2081 work and the default setting is ok, dxs_support=3 is the
2082 right choice. If the default setting doesn't work at all,
2083 try dxs_support=2 to disable the DXS channels.
2084 In any cases, please let us know the result and the
2085 subsystem vendor/device ids. See "Links and Addresses"
2088 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2089 additionally. The mpu_port option is for VIA686 chips only.
2091 The power-management is supported.
2093 Module snd-via82xx-modem
2094 ------------------------
2096 Module for VIA82xx AC97 modem
2098 ac97_clock - AC'97 codec clock base (default 48000Hz)
2100 This module supports one card and autoprobe.
2102 Note: The default index value of this module is -2, i.e. the first
2105 The power-management is supported.
2110 Module for virtual rawmidi devices.
2111 This module creates virtual rawmidi devices which communicate
2112 to the corresponding ALSA sequencer ports.
2114 midi_devs - MIDI devices # (1-4, default=4)
2116 This module supports multiple cards.
2121 Module for sound cards based on the Asus AV100/AV200 chips,
2122 i.e., Xonar D1, DX, D2 and D2X.
2124 This module supports autoprobe and multiple cards.
2129 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2131 mic - Enable Microphone on V222 Mic (NYI)
2132 ibl - Capture IBL size. (default = 0, minimum size)
2134 This module supports multiple cards.
2136 When the driver is compiled as a module and the hotplug firmware
2137 is supported, the firmware data is loaded via hotplug automatically.
2138 Install the necessary firmware files in alsa-firmware package.
2139 When no hotplug fw loader is available, you need to load the
2140 firmware via vxloader utility in alsa-tools package. To invoke
2141 vxloader automatically, add the following to /etc/modprobe.conf
2143 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2145 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2146 /etc/modules.conf, instead.)
2147 IBL size defines the interrupts period for PCM. The smaller size
2148 gives smaller latency but leads to more CPU consumption, too.
2149 The size is usually aligned to 126. As default (=0), the smallest
2150 size is chosen. The possible IBL values can be found in
2151 /proc/asound/cardX/vx-status proc file.
2153 The power-management is supported.
2158 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2160 ibl - Capture IBL size. (default = 0, minimum size)
2162 This module supports multiple cards. The module is compiled only when
2163 PCMCIA is supported on kernel.
2165 With the older 2.6.x kernel, to activate the driver via the card
2166 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2167 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2168 longer require a config file.
2170 When the driver is compiled as a module and the hotplug firmware
2171 is supported, the firmware data is loaded via hotplug automatically.
2172 Install the necessary firmware files in alsa-firmware package.
2173 When no hotplug fw loader is available, you need to load the
2174 firmware via vxloader utility in alsa-tools package.
2176 About capture IBL, see the description of snd-vx222 module.
2178 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2181 The power-management is supported.
2186 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2188 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2189 1 (auto-detect for YMF744/754 only)
2190 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2191 1 (auto-detect for YMF744/754 only)
2192 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2194 rear_switch - enable shared rear/line-in switch (bool)
2196 This module supports autoprobe and multiple chips.
2198 The power-management is supported.
2200 Module snd-pdaudiocf
2201 --------------------
2203 Module for Sound Core PDAudioCF sound card.
2205 The power-management is supported.
2211 The ac97_quirk option is used to enable/override the workaround for
2212 specific devices on drivers for on-board AC'97 controllers like
2213 snd-intel8x0. Some hardware have swapped output pins between Master
2214 and Headphone, or Surround (thanks to confusion of AC'97
2215 specifications from version to version :-)
2217 The driver provides the auto-detection of known problematic devices,
2218 but some might be unknown or wrongly detected. In such a case, pass
2219 the proper value with this option.
2221 The following strings are accepted:
2222 - default Don't override the default setting
2223 - none Disable the quirk
2224 - hp_only Bind Master and Headphone controls as a single control
2225 - swap_hp Swap headphone and master controls
2226 - swap_surround Swap master and surround controls
2227 - ad_sharing For AD1985, turn on OMS bit and use headphone
2228 - alc_jack For ALC65x, turn on the jack sense mode
2229 - inv_eapd Inverted EAPD implementation
2230 - mute_led Bind EAPD bit for turning on/off mute LED
2232 For backward compatibility, the corresponding integer value -1, 0,
2233 ... are accepted, too.
2235 For example, if "Master" volume control has no effect on your device
2236 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2239 Configuring Non-ISAPNP Cards
2240 ============================
2242 When the kernel is configured with ISA-PnP support, the modules
2243 supporting the isapnp cards will have module options "isapnp".
2244 If this option is set, *only* the ISA-PnP devices will be probed.
2245 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2246 together with the proper i/o and irq configuration.
2248 When the kernel is configured without ISA-PnP support, isapnp option
2249 will be not built in.
2252 Module Autoloading Support
2253 ==========================
2255 The ALSA drivers can be loaded automatically on demand by defining
2256 module aliases. The string 'snd-card-%1' is requested for ALSA native
2257 devices where %i is sound card number from zero to seven.
2259 To auto-load an ALSA driver for OSS services, define the string
2260 'sound-slot-%i' where %i means the slot number for OSS, which
2261 corresponds to the card index of ALSA. Usually, define this
2262 as the same card module.
2264 An example configuration for a single emu10k1 card is like below:
2265 ----- /etc/modprobe.conf
2266 alias snd-card-0 snd-emu10k1
2267 alias sound-slot-0 snd-emu10k1
2268 ----- /etc/modprobe.conf
2270 The available number of auto-loaded sound cards depends on the module
2271 option "cards_limit" of snd module. As default it's set to 1.
2272 To enable the auto-loading of multiple cards, specify the number of
2273 sound cards in that option.
2275 When multiple cards are available, it'd better to specify the index
2276 number for each card via module option, too, so that the order of
2277 cards is kept consistent.
2279 An example configuration for two sound cards is like below:
2281 ----- /etc/modprobe.conf
2283 options snd cards_limit=2
2284 alias snd-card-0 snd-interwave
2285 alias snd-card-1 snd-ens1371
2286 options snd-interwave index=0
2287 options snd-ens1371 index=1
2289 alias sound-slot-0 snd-interwave
2290 alias sound-slot-1 snd-ens1371
2291 ----- /etc/modprobe.conf
2293 In this example, the interwave card is always loaded as the first card
2294 (index 0) and ens1371 as the second (index 1).
2296 Alternative (and new) way to fixate the slot assignment is to use
2297 "slots" option of snd module. In the case above, specify like the
2300 options snd slots=snd-interwave,snd-ens1371
2302 Then, the first slot (#0) is reserved for snd-interwave driver, and
2303 the second (#1) for snd-ens1371. You can omit index option in each
2304 driver if slots option is used (although you can still have them at
2305 the same time as long as they don't conflict).
2307 The slots option is especially useful for avoiding the possible
2308 hot-plugging and the resultant slot conflict. For example, in the
2309 case above again, the first two slots are already reserved. If any
2310 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2311 snd-ens1371, it will be assigned to the third or later slot.
2313 When a module name is given with '!', the slot will be given for any
2314 modules but that name. For example, "slots=!snd-pcsp" will reserve
2315 the first slot for any modules but snd-pcsp.
2318 ALSA PCM devices to OSS devices mapping
2319 =======================================
2321 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2322 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2323 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2324 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2325 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2326 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2327 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2328 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2329 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2331 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2332 sound card number and second means device number. The ALSA devices
2333 have either 'c' or 'p' suffix indicating the direction, capture and
2334 playback, respectively.
2336 Please note that the device mapping above may be varied via the module
2337 options of snd-pcm-oss module.
2340 Proc interfaces (/proc/asound)
2341 ==============================
2343 /proc/asound/card#/pcm#[cp]/oss
2344 -------------------------------
2345 String "erase" - erase all additional informations about OSS applications
2346 String "<app_name> <fragments> <fragment_size> [<options>]"
2348 <app_name> - name of application with (higher priority) or without path
2349 <fragments> - number of fragments or zero if auto
2350 <fragment_size> - size of fragment in bytes or zero if auto
2351 <options> - optional parameters
2352 - disable the application tries to open a pcm device for
2353 this channel but does not want to use it.
2354 (Cause a bug or mmap needs)
2355 It's good for Quake etc...
2356 - direct don't use plugins
2357 - block force block mode (rvplayer)
2358 - non-block force non-block mode
2359 - whole-frag write only whole fragments (optimization affecting
2361 - no-silence do not fill silence ahead to avoid clicks
2362 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2363 instead of filled blocks
2365 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2366 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2367 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2370 Early Buffer Allocation
2371 =======================
2373 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2374 sometimes it's too late to find such spaces when the driver module is
2375 actually loaded due to memory fragmentation. You can pre-allocate the
2376 PCM buffers by loading snd-page-alloc module and write commands to its
2377 proc file in prior, for example, in the early boot stage like
2378 /etc/init.d/*.local scripts.
2380 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2381 usage of page allocation. In writing, you can send the following
2382 commands to the snd-page-alloc driver:
2384 - add VENDOR DEVICE MASK SIZE BUFFERS
2386 VENDOR and DEVICE are PCI vendor and device IDs. They take
2387 integer numbers (0x prefix is needed for the hex).
2388 MASK is the PCI DMA mask. Pass 0 if not restricted.
2389 SIZE is the size of each buffer to allocate. You can pass
2390 k and m suffix for KB and MB. The max number is 16MB.
2391 BUFFERS is the number of buffers to allocate. It must be greater
2392 than 0. The max number is 4.
2396 This will erase the all pre-allocated buffers which are not in
2403 ALSA project homepage
2404 http://www.alsa-project.org
2406 ALSA Bug Tracking System
2407 https://bugtrack.alsa-project.org/bugs/
2410 mailto:alsa-devel@alsa-project.org
projects / linux-2.6-omap-h63xx.git / blob