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)
812 fujitsu Fujitsu S7020
814 will Will laptops (PB V7900)
815 replacer Replacer 672V
816 basic fixed pin assignment (old default model)
817 test for testing/debugging purpose, almost all controls can
818 adjusted. Appearing only when compiled with
820 auto auto-config reading BIOS (default)
823 fujitsu Fujitsu Laptop
824 hp-bpc HP xw4400/6400/8400/9400 laptops
825 hp-bpc-d7000 HP BPC D7000
826 hp-tc-t5735 HP Thin Client T5735
830 hippo Hippo (ATI) with jack detection, Sony UX-90s
831 hippo_1 Hippo (Benq) with jack detection
832 sony-assamd Sony ASSAMD
833 ultra Samsung Q1 Ultra Vista model
834 lenovo-3000 Lenovo 3000 y410
835 basic fixed pin assignment w/o SPDIF
836 auto auto-config reading BIOS (default)
839 quanta-il1 Quanta IL1 mini-notebook
843 dell Dell OEM laptops (Vostro 1200)
845 test for testing/debugging purpose, almost all controls can
846 adjusted. Appearing only when compiled with
848 auto auto-config reading BIOS (default)
854 3stack-dig 3-stack (2-channel) with SPDIF
855 3stack-6ch 3-stack (6-channel)
856 3stack-6ch-dig 3-stack (6-channel) with SPDIF
857 6stack-dig 6-stack with SPDIF
858 lenovo-101e Lenovo laptop
859 eeepc-p701 ASUS Eeepc P701
860 eeepc-ep20 ASUS Eeepc EP20
865 auto auto-config reading BIOS (default)
868 3stack-dig 3-jack with SPDIF I/O
869 6stack-dig 6-jack digital with SPDIF I/O
871 targa Targa T8, MSI-1049 T8
874 macpro MacPro support
875 mbp3 Macbook Pro rev3
876 imac24 iMac 24'' with jack detection
878 auto auto-config reading BIOS (default)
881 3stack-dig 3-jack with SPDIF I/O
882 6stack-dig 6-jack digital with SPDIF I/O
883 3stack-6ch 3-jack 6-channel
884 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
885 6stack-dig-demo 6-jack digital for Intel demo board
886 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
887 acer-aspire Acer Aspire 9810
888 medion Medion Laptops
889 medion-md2 Medion MD2
891 targa-2ch-dig Targs/MSI with 2-channel
892 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
893 lenovo-101e Lenovo 101E
894 lenovo-nb0763 Lenovo NB0763
895 lenovo-ms7195-dig Lenovo MS7195
897 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
898 6stack-dell Dell machines with 6stack (Inspiron 530)
900 clevo-m720 Clevo M720 laptop series
901 fujitsu-pi2515 Fujitsu AMILO Pi2515
902 auto auto-config reading BIOS (default)
906 3stack-dig 3-jack with SPDIF I/O
907 6stack-dig 6-jack with SPDIF I/O
908 3stack-660 3-jack (for ALC660)
909 uniwill-m31 Uniwill M31 laptop
910 toshiba Toshiba laptop support
911 asus Asus laptop support
912 asus-laptop ASUS F2/F3 laptops
913 auto auto-config reading BIOS (default)
917 3stack-dig 3-jack with SPDIF OUT
918 6stack-dig 6-jack with SPDIF OUT
919 3stack-660 3-jack (for ALC660VD)
920 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
921 lenovo Lenovo 3000 C200
922 dallas Dallas laptops
924 auto auto-config reading BIOS (default)
927 minimal 3-jack in back
928 min_fp 3-jack in back, 2-jack in front
929 full 6-jack in back, 2-jack in front
930 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
931 allout 5-jack in back, 2-jack in front, SPDIF out
932 auto auto-config reading BIOS (default)
935 3stack 3-stack mode (default)
938 AD1884A / AD1883 / AD1984A / AD1984B
939 desktop 3-stack desktop (default)
940 laptop laptop with HP jack sensing
941 mobile mobile devices with HP jack sensing
942 thinkpad Lenovo Thinkpad X300
948 basic 3-jack (default)
950 thinkpad Lenovo Thinkpad T60/X60/Z60
957 basic default configuration
958 thinkpad Lenovo Thinkpad T61/X61
962 6stack 6-jack, separate surrounds (default)
963 3stack 3-stack, shared surrounds
964 laptop 2-channel only (FSC V2060, Samsung M50)
965 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
966 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
967 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
969 AD1988/AD1988B/AD1989A/AD1989B
971 6stack-dig ditto with SPDIF
973 3stack-dig ditto with SPDIF
974 laptop 3-jack with hp-jack automute
975 laptop-dig ditto with SPDIF
976 auto auto-config reading BIOS (default)
979 laptop-hpsense Laptop with HP sense (old model laptop)
980 laptop-micsense Laptop with Mic sense (old model fujitsu)
981 laptop-hpmicsense Laptop with HP and Mic senses
983 test for testing/debugging purpose, almost all controls
984 can be adjusted. Appearing only when compiled with
988 laptop Basic Laptop config
989 laptop-hp Laptop config for some HP models (subdevice 30A5)
990 laptop-eapd Laptop config with EAPD support
991 test for testing/debugging purpose, almost all controls
992 can be adjusted. Appearing only when compiled with
996 laptop Basic Laptop config (default)
1001 dell-d21 Dell (unknown)
1002 dell-d22 Dell (unknown)
1003 dell-d23 Dell (unknown)
1004 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
1005 dell-m22 Dell Latitude D620, Dell Latitude D820
1006 dell-m23 Dell XPS M1710, Dell Precision M90
1007 dell-m24 Dell Latitude 120L
1008 dell-m25 Dell Inspiron E1505n
1009 dell-m26 Dell Inspiron 1501
1010 dell-m27 Dell Inspiron E1705/9400
1011 gateway Gateway laptops with EAPD control
1012 panasonic Panasonic CF-74
1016 dell-m42 Dell (unknown)
1017 dell-m43 Dell Precision
1018 dell-m44 Dell Inspiron
1023 5stack D945 5stack + SPDIF
1024 intel-mac-v1 Intel Mac Type 1
1025 intel-mac-v2 Intel Mac Type 2
1026 intel-mac-v3 Intel Mac Type 3
1027 intel-mac-v4 Intel Mac Type 4
1028 intel-mac-v5 Intel Mac Type 5
1029 intel-mac-auto Intel Mac (detect type according to subsystem id)
1030 macmini Intel Mac Mini (equivalent with type 3)
1031 macbook Intel Mac Book (eq. type 5)
1032 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
1033 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
1034 imac-intel Intel iMac (eq. type 2)
1035 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1036 dell-d81 Dell (unknown)
1037 dell-d82 Dell (unknown)
1038 dell-m81 Dell (unknown)
1039 dell-m82 Dell XPS M1210
1042 ref Reference board, base config
1043 m2-2 Some Gateway MX series laptops
1044 m6 Some Gateway NX series laptops
1045 pa6 Gateway NX860 series
1047 STAC9227/9228/9229/927x
1050 5stack D965 5stack + SPDIF
1051 dell-3stack Dell Dimension E520
1052 dell-bios Fixes with Dell BIOS setup
1056 dell-m4-1 Dell desktops
1057 dell-m4-2 Dell desktops
1061 dell-m6 Dell desktops
1064 vaio Setup for VAIO FE550G/SZ110
1065 vaio-ar Setup for VAIO AR
1067 The model name "genric" is treated as a special case. When this
1068 model is given, the driver uses the generic codec parser without
1069 "codec-patch". It's sometimes good for testing and debugging.
1071 If the default configuration doesn't work and one of the above
1072 matches with your device, report it together with the PCI
1073 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1074 ML (see the section "Links and Addresses").
1076 power_save and power_save_controller options are for power-saving
1077 mode. See powersave.txt for details.
1079 Note 2: If you get click noises on output, try the module option
1080 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1081 register value without FIFO size correction as the current
1082 DMA pointer. position_fix=2 will make the driver to use
1083 the position buffer instead of reading SD_LPIB register.
1084 (Usually SD_LPLIB register is more accurate than the
1087 NB: If you get many "azx_get_response timeout" messages at
1088 loading, it's likely a problem of interrupts (e.g. ACPI irq
1089 routing). Try to boot with options like "pci=noacpi". Also, you
1090 can try "single_cmd=1" module option. This will switch the
1091 communication method between HDA controller and codecs to the
1092 single immediate commands instead of CORB/RIRB. Basically, the
1093 single command mode is provided only for BIOS, and you won't get
1094 unsolicited events, too. But, at least, this works independently
1095 from the irq. Remember this is a last resort, and should be
1096 avoided as much as possible...
1098 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1099 On some hardwares, you may need to add a proper probe_mask option
1100 to avoid the "azx_get_response timeout" problem above, instead.
1101 This occurs when the access to non-existing or non-working codec slot
1102 (likely a modem one) causes a stall of the communication via HD-audio
1103 bus. You can see which codec slots are probed by enabling
1104 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
1105 proc files. Then limit the slots to probe by probe_mask option.
1106 For example, probe_mask=1 means to probe only the first slot, and
1107 probe_mask=4 means only the third slot.
1109 The power-management is supported.
1114 Module for RME Hammerfall DSP audio interface(s)
1116 This module supports multiple cards.
1118 Note: The firmware data can be automatically loaded via hotplug
1119 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1120 the firmware via hdsploader utility included in alsa-tools
1122 The firmware data is found in alsa-firmware package.
1124 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1125 module did formerly. It will allocate the buffers in advance
1126 when any HDSP cards are found. To make the buffer
1127 allocation sure, load snd-page-alloc module in the early
1128 stage of boot sequence. See "Early Buffer Allocation"
1134 Module for RME HDSP MADI board.
1136 precise_ptr - Enable precise pointer, or disable.
1137 line_outs_monitor - Send playback streams to analog outs by default.
1138 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1140 See hdspm.txt for details.
1145 Module for the MediaTek/TempoTec HiFier Fantasia sound card.
1147 This module supports autoprobe and multiple cards.
1152 Module for Envy24 (ICE1712) based PCI sound cards.
1153 * MidiMan M Audio Delta 1010
1154 * MidiMan M Audio Delta 1010LT
1155 * MidiMan M Audio Delta DiO 2496
1156 * MidiMan M Audio Delta 66
1157 * MidiMan M Audio Delta 44
1158 * MidiMan M Audio Delta 410
1159 * MidiMan M Audio Audiophile 2496
1162 * TerraTec EWX 24/96
1163 * TerraTec DMX 6Fire
1165 * Hoontech SoundTrack DSP 24
1166 * Hoontech SoundTrack DSP 24 Value
1167 * Hoontech SoundTrack DSP 24 Media 7.1
1168 * Event Electronics, EZ8
1170 * Lionstracs, Mediastaton
1173 model - Use the given board model, one of the following:
1174 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1175 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1176 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1177 phase88, mediastation
1178 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1179 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1180 in msec resolution, default value is 500 (0.5 sec)
1182 This module supports multiple cards and autoprobe. Note: The consumer part
1183 is not used with all Envy24 based cards (for example in the MidiMan Delta
1186 Note: The supported board is detected by reading EEPROM or PCI
1187 SSID (if EEPROM isn't available). You can override the
1188 model by passing "model" module option in case that the
1189 driver isn't configured properly or you want to try another
1195 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1196 * MidiMan M Audio Revolution 5.1
1197 * MidiMan M Audio Revolution 7.1
1198 * MidiMan M Audio Audiophile 192
1200 * TerraTec Aureon 5.1 Sky
1201 * TerraTec Aureon 7.1 Space
1202 * TerraTec Aureon 7.1 Universe
1205 * AudioTrak Prodigy 7.1
1206 * AudioTrak Prodigy 7.1 LT
1207 * AudioTrak Prodigy 7.1 XT
1208 * AudioTrak Prodigy 7.1 HIFI
1209 * AudioTrak Prodigy 7.1 HD2
1210 * AudioTrak Prodigy 192
1212 * Albatron K8X800 Pro II
1213 * Chaintech ZNF3-150
1214 * Chaintech ZNF3-250
1221 * Hercules Fortissimo IV
1222 * EGO-SYS WaveTerminal 192M
1224 model - Use the given board model, one of the following:
1225 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1226 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1227 juli, aureon51, aureon71, universe, ap192, k8x800,
1228 phase22, phase28, ms300, av710, se200pci, se90pci,
1229 fortissimo4, sn25p, WT192M
1231 This module supports multiple cards and autoprobe.
1233 Note: The supported board is detected by reading EEPROM or PCI
1234 SSID (if EEPROM isn't available). You can override the
1235 model by passing "model" module option in case that the
1236 driver isn't configured properly or you want to try another
1242 Module for Echoaudio Indigo
1244 This module supports multiple cards.
1245 The driver requires the firmware loader support on kernel.
1250 Module for Echoaudio Indigo DJ
1252 This module supports multiple cards.
1253 The driver requires the firmware loader support on kernel.
1258 Module for Echoaudio Indigo IO
1260 This module supports multiple cards.
1261 The driver requires the firmware loader support on kernel.
1266 Module for AC'97 motherboards from Intel and compatibles.
1267 * Intel i810/810E, i815, i820, i830, i84x, MX440
1268 ICH5, ICH6, ICH7, 6300ESB, ESB2
1269 * SiS 7012 (SiS 735)
1270 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1272 * AMD AMD768, AMD8111
1275 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1276 ac97_quirk - AC'97 workaround for strange hardware
1277 See "AC97 Quirk Option" section below.
1278 buggy_irq - Enable workaround for buggy interrupts on some
1279 motherboards (default yes on nForce chips,
1281 buggy_semaphore - Enable workaround for hardwares with buggy
1282 semaphores (e.g. on some ASUS laptops)
1284 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1285 from the controller chip
1286 (0 = off, 1 = on, -1 = default)
1288 This module supports one chip and autoprobe.
1290 Note: the latest driver supports auto-detection of chip clock.
1291 if you still encounter too fast playback, specify the clock
1292 explicitly via the module option "ac97_clock=41194".
1294 Joystick/MIDI ports are not supported by this driver. If your
1295 motherboard has these devices, use the ns558 or snd-mpu401
1296 modules, respectively.
1298 The power-management is supported.
1300 Module snd-intel8x0m
1301 --------------------
1303 Module for Intel ICH (i8x0) chipset MC97 modems.
1304 * Intel i810/810E, i815, i820, i830, i84x, MX440
1306 * SiS 7013 (SiS 735)
1307 * NVidia NForce, NForce2, NForce2s, NForce3
1311 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1313 This module supports one card and autoprobe.
1315 Note: The default index value of this module is -2, i.e. the first
1318 The power-management is supported.
1320 Module snd-interwave
1321 --------------------
1323 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1324 and other sound cards based on AMD InterWave (tm) chip.
1326 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1327 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1328 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1329 effect - 1 = InterWave effects enable (default 0);
1331 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1333 with isapnp=0, the following options are available:
1335 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1336 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1337 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1338 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1340 This module supports multiple cards, autoprobe and ISA PnP.
1342 Module snd-interwave-stb
1343 ------------------------
1345 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1346 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1347 circuit for extended control of bass, treble and master volume.
1349 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1350 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1351 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1352 effect - 1 = InterWave effects enable (default 0);
1354 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1356 with isapnp=0, the following options are available:
1358 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1359 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1360 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1361 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1362 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1364 This module supports multiple cards, autoprobe and ISA PnP.
1369 Module for Korg 1212 IO PCI card
1371 This module supports multiple cards.
1376 Module for Echoaudio Layla20
1378 This module supports multiple cards.
1379 The driver requires the firmware loader support on kernel.
1384 Module for Echoaudio Layla24
1386 This module supports multiple cards.
1387 The driver requires the firmware loader support on kernel.
1392 Module for Allegro/Maestro3 chips
1394 external_amp - enable external amp (enabled by default)
1395 amp_gpio - GPIO pin number for external amp (0-15) or
1396 -1 for default pin (8 for allegro, 1 for
1399 This module supports autoprobe and multiple chips.
1401 Note: the binding of amplifier is dependent on hardware.
1402 If there is no sound even though all channels are unmuted, try to
1403 specify other gpio connection via amp_gpio option.
1404 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1407 The power-management is supported.
1412 Module for Echoaudio Mia
1414 This module supports multiple cards.
1415 The driver requires the firmware loader support on kernel.
1420 Module for Miro soundcards: miroSOUND PCM 1 pro,
1422 miroSOUND PCM 20 Radio.
1424 port - Port # (0x530,0x604,0xe80,0xf40)
1425 irq - IRQ # (5,7,9,10,11)
1426 dma1 - 1st dma # (0,1,3)
1427 dma2 - 2nd dma # (0,1)
1428 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1429 mpu_irq - MPU-401 irq # (5,7,9,10)
1430 fm_port - FM Port # (0x388)
1431 wss - enable WSS mode
1432 ide - enable onboard ide support
1437 Module for Digigram miXart8 sound cards.
1439 This module supports multiple cards.
1440 Note: One miXart8 board will be represented as 4 alsa cards.
1441 See MIXART.txt for details.
1443 When the driver is compiled as a module and the hotplug firmware
1444 is supported, the firmware data is loaded via hotplug automatically.
1445 Install the necessary firmware files in alsa-firmware package.
1446 When no hotplug fw loader is available, you need to load the
1447 firmware via mixartloader utility in alsa-tools package.
1452 Module for Echoaudio Mona
1454 This module supports multiple cards.
1455 The driver requires the firmware loader support on kernel.
1460 Module for MPU-401 UART devices.
1462 port - port number or -1 (disable)
1463 irq - IRQ number or -1 (disable)
1464 pnp - PnP detection - 0 = disable, 1 = enable (default)
1466 This module supports multiple devices and PnP.
1471 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1474 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1475 irq - IRQ # for MTPAV (7,5, default=7)
1476 hwports - number of supported hardware ports, default=8.
1478 Module supports only 1 card. This module has no enable option.
1483 Module for Ego Systems (ESI) Miditerminal 4140
1485 This module supports multiple devices.
1486 Requires parport (CONFIG_PARPORT).
1491 Module for NeoMagic NM256AV/ZX chips
1493 playback_bufsize - max playback frame size in kB (4-128kB)
1494 capture_bufsize - max capture frame size in kB (4-128kB)
1495 force_ac97 - 0 or 1 (disabled by default)
1496 buffer_top - specify buffer top address
1497 use_cache - 0 or 1 (disabled by default)
1498 vaio_hack - alias buffer_top=0x25a800
1499 reset_workaround - enable AC97 RESET workaround for some laptops
1500 reset_workaround2 - enable extended AC97 RESET workaround for some
1503 This module supports one chip and autoprobe.
1505 The power-management is supported.
1507 Note: on some notebooks the buffer address cannot be detected
1508 automatically, or causes hang-up during initialization.
1509 In such a case, specify the buffer top address explicitly via
1510 the buffer_top option.
1512 Sony F250: buffer_top=0x25a800
1513 Sony F270: buffer_top=0x272800
1514 The driver supports only ac97 codec. It's possible to force
1515 to initialize/use ac97 although it's not detected. In such a
1516 case, use force_ac97=1 option - but *NO* guarantee whether it
1519 Note: The NM256 chip can be linked internally with non-AC97
1520 codecs. This driver supports only the AC97 codec, and won't work
1521 with machines with other (most likely CS423x or OPL3SAx) chips,
1522 even though the device is detected in lspci. In such a case, try
1523 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1524 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1525 and proper hardware parameters in the case without ISA PnP.
1527 Note: some laptops need a workaround for AC97 RESET. For the
1528 known hardware like Dell Latitude LS and Sony PCG-F305, this
1529 workaround is enabled automatically. For other laptops with a
1530 hard freeze, you can try reset_workaround=1 option.
1532 Note: Dell Latitude CSx laptops have another problem regarding
1533 AC97 RESET. On these laptops, reset_workaround2 option is
1534 turned on as default. This option is worth to try if the
1535 previous reset_workaround option doesn't help.
1537 Note: This driver is really crappy. It's a porting from the
1538 OSS driver, which is a result of black-magic reverse engineering.
1539 The detection of codec will fail if the driver is loaded *after*
1540 X-server as described above. You might be able to force to load
1541 the module, but it may result in hang-up. Hence, make sure that
1542 you load this module *before* X if you encounter this kind of
1548 Module for Yamaha OPL3-SA2/SA3 sound cards.
1550 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1552 with isapnp=0, the following options are available:
1554 port - control port # for OPL3-SA chip (0x370)
1555 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1556 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1557 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1558 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1559 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1560 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1561 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1563 This module supports multiple cards and ISA PnP. It does not support
1564 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1566 The power-management is supported.
1568 Module snd-opti92x-ad1848
1569 -------------------------
1571 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1572 Module works with OAK Mozart cards as well.
1574 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1576 with isapnp=0, the following options are available:
1578 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1579 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1580 fm_port - port # for OPL3 device (0x388)
1581 irq - IRQ # for WSS chip (5,7,9,10,11)
1582 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1583 dma1 - first DMA # for WSS chip (0,1,3)
1585 This module supports only one card, autoprobe and PnP.
1587 Module snd-opti92x-cs4231
1588 -------------------------
1590 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1592 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1594 with isapnp=0, the following options are available:
1596 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1597 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1598 fm_port - port # for OPL3 device (0x388)
1599 irq - IRQ # for WSS chip (5,7,9,10,11)
1600 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1601 dma1 - first DMA # for WSS chip (0,1,3)
1602 dma2 - second DMA # for WSS chip (0,1,3)
1604 This module supports only one card, autoprobe and PnP.
1609 Module for sound cards based on OPTi 82c93x chips.
1611 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1613 with isapnp=0, the following options are available:
1615 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1616 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1617 fm_port - port # for OPL3 device (0x388)
1618 irq - IRQ # for WSS chip (5,7,9,10,11)
1619 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1620 dma1 - first DMA # for WSS chip (0,1,3)
1621 dma2 - second DMA # for WSS chip (0,1,3)
1623 This module supports only one card, autoprobe and PnP.
1628 Module for sound cards based on the C-Media CMI8788 chip:
1630 * AuzenTech X-Meridian
1632 * Club3D Theatron DTS
1634 * Razer Barracuda AC-1
1637 This module supports autoprobe and multiple cards.
1642 Module for internal PC-Speaker.
1644 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1646 This module supports system beeps, some kind of PCM playback and
1647 even a few mixer controls.
1652 Module for Digigram PCXHR boards
1654 This module supports multiple cards.
1656 Module snd-portman2x4
1657 ---------------------
1659 Module for Midiman Portman 2x4 parallel port MIDI interface
1661 This module supports multiple cards.
1663 Module snd-powermac (on ppc only)
1664 ---------------------------------
1666 Module for PowerMac, iMac and iBook on-board soundchips
1668 enable_beep - enable beep using PCM (enabled as default)
1670 Module supports autoprobe a chip.
1672 Note: the driver may have problems regarding endianess.
1674 The power-management is supported.
1676 Module snd-pxa2xx-ac97 (on arm only)
1677 ------------------------------------
1679 Module for AC97 driver for the Intel PXA2xx chip
1681 For ARM architecture only.
1683 The power-management is supported.
1688 Module for Conexant Riptide chip
1690 joystick_port - Joystick port # (default: 0x200)
1691 mpu_port - MPU401 port # (default: 0x330)
1692 opl3_port - OPL3 port # (default: 0x388)
1694 This module supports multiple cards.
1695 The driver requires the firmware loader support on kernel.
1696 You need to install the firmware file "riptide.hex" to the standard
1697 firmware path (e.g. /lib/firmware).
1702 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1703 Prodif96 and Prodif Gold) sound cards.
1705 This module supports multiple cards.
1710 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1712 This module supports multiple cards.
1717 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1719 precise_ptr - Enable precise pointer (doesn't work reliably).
1722 This module supports multiple cards.
1724 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1725 module did formerly. It will allocate the buffers in advance
1726 when any RME9652 cards are found. To make the buffer
1727 allocation sure, load snd-page-alloc module in the early
1728 stage of boot sequence. See "Early Buffer Allocation"
1731 Module snd-sa11xx-uda1341 (on arm only)
1732 ---------------------------------------
1734 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1736 Module supports only one card.
1737 Module has no enable and index options.
1739 The power-management is supported.
1744 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1748 port - port # for SB DSP chip (0x220,0x240,0x260)
1749 irq - IRQ # for SB DSP chip (5,7,9,10)
1750 dma8 - DMA # for SB DSP chip (1,3)
1752 This module supports multiple cards and autoprobe.
1754 The power-management is supported.
1756 Module snd-sb16 and snd-sbawe
1757 -----------------------------
1759 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1760 SoundBlaster AWE 32 (PnP),
1761 SoundBlaster AWE 64 PnP
1763 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1764 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1765 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1767 with isapnp=0, the following options are available:
1769 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1770 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1771 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1772 (snd-sbawe module only)
1773 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1774 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1775 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1777 This module supports multiple cards, autoprobe and ISA PnP.
1779 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1780 disable 16bit DMA with dma16 = -1 module parameter.
1781 Also, all Sound Blaster 16 type cards can operate in 16-bit
1782 half duplex mode through 8-bit DMA channel by disabling their
1785 The power-management is supported.
1790 Module for Gallant SC-6000 soundcard.
1792 port - Port # (0x220 or 0x240)
1793 mss_port - MSS Port # (0x530 or 0xe80)
1794 irq - IRQ # (5,7,9,10,11)
1795 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1798 This module supports multiple cards.
1800 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1805 Module for Aztech Sound Galaxy sound card.
1807 sbport - Port # for SB16 interface (0x220,0x240)
1808 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1809 irq - IRQ # (7,9,10,11)
1812 This module supports multiple cards.
1814 The power-management is supported.
1819 Module for ENSONIQ SoundScape PnP cards.
1821 port - Port # (PnP setup)
1822 wss_port - WSS Port # (PnP setup)
1823 irq - IRQ # (PnP setup)
1824 mpu_irq - MPU-401 IRQ # (PnP setup)
1825 dma - DMA # (PnP setup)
1826 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1828 This module supports multiple cards. ISA PnP must be enabled.
1829 You need sscape_ctl tool in alsa-tools package for loading
1832 Module snd-sun-amd7930 (on sparc only)
1833 --------------------------------------
1835 Module for AMD7930 sound chips found on Sparcs.
1837 This module supports multiple cards.
1839 Module snd-sun-cs4231 (on sparc only)
1840 -------------------------------------
1842 Module for CS4231 sound chips found on Sparcs.
1844 This module supports multiple cards.
1846 Module snd-sun-dbri (on sparc only)
1847 -----------------------------------
1849 Module for DBRI sound chips found on Sparcs.
1851 This module supports multiple cards.
1853 Module snd-wavefront
1854 --------------------
1856 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1858 use_cs4232_midi - Use CS4232 MPU-401 interface
1859 (inaccessibly located inside your computer)
1860 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1862 with isapnp=0, the following options are available:
1864 cs4232_pcm_port - Port # for CS4232 PCM interface.
1865 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1866 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1867 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1868 ics2115_port - Port # for ICS2115
1869 ics2115_irq - IRQ # for ICS2115
1870 fm_port - FM OPL-3 Port #
1871 dma1 - DMA1 # for CS4232 PCM interface.
1872 dma2 - DMA2 # for CS4232 PCM interface.
1874 The below are options for wavefront_synth features:
1875 wf_raw - Assume that we need to boot the OS (default:no)
1876 If yes, then during driver loading, the state of the board is
1877 ignored, and we reset the board and load the firmware anyway.
1878 fx_raw - Assume that the FX process needs help (default:yes)
1879 If false, we'll leave the FX processor in whatever state it is
1880 when the driver is loaded. The default is to download the
1881 microprogram and associated coefficients to set it up for
1882 "default" operation, whatever that means.
1883 debug_default - Debug parameters for card initialization
1884 wait_usecs - How long to wait without sleeping, usecs
1886 This magic number seems to give pretty optimal throughput
1887 based on my limited experimentation.
1888 If you want to play around with it and find a better value, be
1889 my guest. Remember, the idea is to get a number that causes us
1890 to just busy wait for as many WaveFront commands as possible,
1891 without coming up with a number so large that we hog the whole
1893 Specifically, with this number, out of about 134,000 status
1894 waits, only about 250 result in a sleep.
1895 sleep_interval - How long to sleep when waiting for reply
1897 sleep_tries - How many times to try sleeping during a wait
1899 ospath - Pathname to processed ICS2115 OS firmware
1900 (default:wavefront.os)
1901 The path name of the ISC2115 OS firmware. In the recent
1902 version, it's handled via firmware loader framework, so it
1903 must be installed in the proper path, typically,
1905 reset_time - How long to wait for a reset to take effect
1907 ramcheck_time - How many seconds to wait for the RAM test
1909 osrun_time - How many seconds to wait for the ICS2115 OS
1912 This module supports multiple cards and ISA PnP.
1914 Note: the firmware file "wavefront.os" was located in the earlier
1915 version in /etc. Now it's loaded via firmware loader, and
1916 must be in the proper firmware path, such as /lib/firmware.
1917 Copy (or symlink) the file appropriately if you get an error
1918 regarding firmware downloading after upgrading the kernel.
1920 Module snd-sonicvibes
1921 ---------------------
1923 Module for S3 SonicVibes PCI sound cards.
1924 * PINE Schubert 32 PCI
1926 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1927 - SoundCard must have onboard SRAM for this.
1928 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1930 This module supports multiple cards and autoprobe.
1932 Module snd-serial-u16550
1933 ------------------------
1935 Module for UART16550A serial MIDI ports.
1937 port - port # for UART16550A chip
1938 irq - IRQ # for UART16550A chip, -1 = poll mode
1939 speed - speed in bauds (9600,19200,38400,57600,115200)
1941 base - base for divisor in bauds (57600,115200,230400,460800)
1943 outs - number of MIDI ports in a serial port (1-4)
1945 adaptor - Type of adaptor.
1946 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1947 3 = MS-124W M/B, 4 = Generic
1949 This module supports multiple cards. This module does not support autoprobe
1950 thus the main port must be specified!!! Other options are optional.
1955 Module for Trident 4DWave DX/NX sound cards.
1956 * Best Union Miss Melody 4DWave PCI
1958 * Warpspeed ONSpeed 4DWave PCI
1961 * CHIC True Sound 4Dwave
1962 * Shark Predator4D-PCI
1963 * Jaton SonicWave 4D
1964 * SiS SI7018 PCI Audio
1965 * Hoontech SoundTrack Digital 4DWave NX
1967 pcm_channels - max channels (voices) reserved for PCM
1968 wavetable_size - max wavetable size in kB (4-?kb)
1970 This module supports multiple cards and autoprobe.
1972 The power-management is supported.
1974 Module snd-usb-audio
1975 --------------------
1977 Module for USB audio and USB MIDI devices.
1979 vid - Vendor ID for the device (optional)
1980 pid - Product ID for the device (optional)
1981 device_setup - Device specific magic number (optional)
1982 - Influence depends on the device
1985 This module supports multiple devices, autoprobe and hotplugging.
1987 Module snd-usb-caiaq
1988 --------------------
1990 Module for caiaq UB audio interfaces,
1991 * Native Instruments RigKontrol2
1992 * Native Instruments Kore Controller
1993 * Native Instruments Audio Kontrol 1
1994 * Native Instruments Audio 8 DJ
1996 This module supports multiple devices, autoprobe and hotplugging.
1998 Module snd-usb-usx2y
1999 --------------------
2001 Module for Tascam USB US-122, US-224 and US-428 devices.
2003 This module supports multiple devices, autoprobe and hotplugging.
2005 Note: you need to load the firmware via usx2yloader utility included
2006 in alsa-tools and alsa-firmware packages.
2011 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
2012 8233A, 8233C, 8235, 8237 (south) bridge.
2014 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
2016 joystick - Enable joystick (default off) [VIA686A/686B only]
2017 ac97_clock - AC'97 codec clock base (default 48000Hz)
2018 dxs_support - support DXS channels,
2019 0 = auto (default), 1 = enable, 2 = disable,
2020 3 = 48k only, 4 = no VRA, 5 = enable any sample
2021 rate and different sample rates on different
2023 [VIA8233/C, 8235, 8237 only]
2024 ac97_quirk - AC'97 workaround for strange hardware
2025 See "AC97 Quirk Option" section below.
2027 This module supports one chip and autoprobe.
2029 Note: on some SMP motherboards like MSI 694D the interrupts might
2030 not be generated properly. In such a case, please try to
2031 set the SMP (or MPS) version on BIOS to 1.1 instead of
2032 default value 1.4. Then the interrupt number will be
2033 assigned under 15. You might also upgrade your BIOS.
2035 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
2036 channels as the first PCM. On these channels, up to 4
2037 streams can be played at the same time, and the controller
2038 can perform sample rate conversion with separate rates for
2040 As default (dxs_support = 0), 48k fixed rate is chosen
2041 except for the known devices since the output is often
2042 noisy except for 48k on some mother boards due to the
2044 Please try once dxs_support=5 and if it works on other
2045 sample rates (e.g. 44.1kHz of mp3 playback), please let us
2046 know the PCI subsystem vendor/device id's (output of
2048 If dxs_support=5 does not work, try dxs_support=4; if it
2049 doesn't work too, try dxs_support=1. (dxs_support=1 is
2050 usually for old motherboards. The correct implemented
2051 board should work with 4 or 5.) If it still doesn't
2052 work and the default setting is ok, dxs_support=3 is the
2053 right choice. If the default setting doesn't work at all,
2054 try dxs_support=2 to disable the DXS channels.
2055 In any cases, please let us know the result and the
2056 subsystem vendor/device ids. See "Links and Addresses"
2059 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
2060 additionally. The mpu_port option is for VIA686 chips only.
2062 The power-management is supported.
2064 Module snd-via82xx-modem
2065 ------------------------
2067 Module for VIA82xx AC97 modem
2069 ac97_clock - AC'97 codec clock base (default 48000Hz)
2071 This module supports one card and autoprobe.
2073 Note: The default index value of this module is -2, i.e. the first
2076 The power-management is supported.
2081 Module for virtual rawmidi devices.
2082 This module creates virtual rawmidi devices which communicate
2083 to the corresponding ALSA sequencer ports.
2085 midi_devs - MIDI devices # (1-4, default=4)
2087 This module supports multiple cards.
2092 Module for sound cards based on the Asus AV100/AV200 chips,
2093 i.e., Xonar D1, DX, D2 and D2X.
2095 This module supports autoprobe and multiple cards.
2100 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2102 mic - Enable Microphone on V222 Mic (NYI)
2103 ibl - Capture IBL size. (default = 0, minimum size)
2105 This module supports multiple cards.
2107 When the driver is compiled as a module and the hotplug firmware
2108 is supported, the firmware data is loaded via hotplug automatically.
2109 Install the necessary firmware files in alsa-firmware package.
2110 When no hotplug fw loader is available, you need to load the
2111 firmware via vxloader utility in alsa-tools package. To invoke
2112 vxloader automatically, add the following to /etc/modprobe.conf
2114 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2116 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2117 /etc/modules.conf, instead.)
2118 IBL size defines the interrupts period for PCM. The smaller size
2119 gives smaller latency but leads to more CPU consumption, too.
2120 The size is usually aligned to 126. As default (=0), the smallest
2121 size is chosen. The possible IBL values can be found in
2122 /proc/asound/cardX/vx-status proc file.
2124 The power-management is supported.
2129 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2131 ibl - Capture IBL size. (default = 0, minimum size)
2133 This module supports multiple cards. The module is compiled only when
2134 PCMCIA is supported on kernel.
2136 With the older 2.6.x kernel, to activate the driver via the card
2137 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2138 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2139 longer require a config file.
2141 When the driver is compiled as a module and the hotplug firmware
2142 is supported, the firmware data is loaded via hotplug automatically.
2143 Install the necessary firmware files in alsa-firmware package.
2144 When no hotplug fw loader is available, you need to load the
2145 firmware via vxloader utility in alsa-tools package.
2147 About capture IBL, see the description of snd-vx222 module.
2149 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2152 The power-management is supported.
2157 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2159 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2160 1 (auto-detect for YMF744/754 only)
2161 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2162 1 (auto-detect for YMF744/754 only)
2163 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2165 rear_switch - enable shared rear/line-in switch (bool)
2167 This module supports autoprobe and multiple chips.
2169 The power-management is supported.
2171 Module snd-pdaudiocf
2172 --------------------
2174 Module for Sound Core PDAudioCF sound card.
2176 The power-management is supported.
2182 The ac97_quirk option is used to enable/override the workaround for
2183 specific devices on drivers for on-board AC'97 controllers like
2184 snd-intel8x0. Some hardware have swapped output pins between Master
2185 and Headphone, or Surround (thanks to confusion of AC'97
2186 specifications from version to version :-)
2188 The driver provides the auto-detection of known problematic devices,
2189 but some might be unknown or wrongly detected. In such a case, pass
2190 the proper value with this option.
2192 The following strings are accepted:
2193 - default Don't override the default setting
2194 - none Disable the quirk
2195 - hp_only Bind Master and Headphone controls as a single control
2196 - swap_hp Swap headphone and master controls
2197 - swap_surround Swap master and surround controls
2198 - ad_sharing For AD1985, turn on OMS bit and use headphone
2199 - alc_jack For ALC65x, turn on the jack sense mode
2200 - inv_eapd Inverted EAPD implementation
2201 - mute_led Bind EAPD bit for turning on/off mute LED
2203 For backward compatibility, the corresponding integer value -1, 0,
2204 ... are accepted, too.
2206 For example, if "Master" volume control has no effect on your device
2207 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2210 Configuring Non-ISAPNP Cards
2211 ============================
2213 When the kernel is configured with ISA-PnP support, the modules
2214 supporting the isapnp cards will have module options "isapnp".
2215 If this option is set, *only* the ISA-PnP devices will be probed.
2216 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2217 together with the proper i/o and irq configuration.
2219 When the kernel is configured without ISA-PnP support, isapnp option
2220 will be not built in.
2223 Module Autoloading Support
2224 ==========================
2226 The ALSA drivers can be loaded automatically on demand by defining
2227 module aliases. The string 'snd-card-%1' is requested for ALSA native
2228 devices where %i is sound card number from zero to seven.
2230 To auto-load an ALSA driver for OSS services, define the string
2231 'sound-slot-%i' where %i means the slot number for OSS, which
2232 corresponds to the card index of ALSA. Usually, define this
2233 as the same card module.
2235 An example configuration for a single emu10k1 card is like below:
2236 ----- /etc/modprobe.conf
2237 alias snd-card-0 snd-emu10k1
2238 alias sound-slot-0 snd-emu10k1
2239 ----- /etc/modprobe.conf
2241 The available number of auto-loaded sound cards depends on the module
2242 option "cards_limit" of snd module. As default it's set to 1.
2243 To enable the auto-loading of multiple cards, specify the number of
2244 sound cards in that option.
2246 When multiple cards are available, it'd better to specify the index
2247 number for each card via module option, too, so that the order of
2248 cards is kept consistent.
2250 An example configuration for two sound cards is like below:
2252 ----- /etc/modprobe.conf
2254 options snd cards_limit=2
2255 alias snd-card-0 snd-interwave
2256 alias snd-card-1 snd-ens1371
2257 options snd-interwave index=0
2258 options snd-ens1371 index=1
2260 alias sound-slot-0 snd-interwave
2261 alias sound-slot-1 snd-ens1371
2262 ----- /etc/modprobe.conf
2264 In this example, the interwave card is always loaded as the first card
2265 (index 0) and ens1371 as the second (index 1).
2267 Alternative (and new) way to fixate the slot assignment is to use
2268 "slots" option of snd module. In the case above, specify like the
2271 options snd slots=snd-interwave,snd-ens1371
2273 Then, the first slot (#0) is reserved for snd-interwave driver, and
2274 the second (#1) for snd-ens1371. You can omit index option in each
2275 driver if slots option is used (although you can still have them at
2276 the same time as long as they don't conflict).
2278 The slots option is especially useful for avoiding the possible
2279 hot-plugging and the resultant slot conflict. For example, in the
2280 case above again, the first two slots are already reserved. If any
2281 other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2282 snd-ens1371, it will be assigned to the third or later slot.
2284 When a module name is given with '!', the slot will be given for any
2285 modules but that name. For example, "slots=!snd-pcsp" will reserve
2286 the first slot for any modules but snd-pcsp.
2289 ALSA PCM devices to OSS devices mapping
2290 =======================================
2292 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2293 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2294 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2295 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2296 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2297 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2298 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2299 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2300 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2302 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2303 sound card number and second means device number. The ALSA devices
2304 have either 'c' or 'p' suffix indicating the direction, capture and
2305 playback, respectively.
2307 Please note that the device mapping above may be varied via the module
2308 options of snd-pcm-oss module.
2311 Proc interfaces (/proc/asound)
2312 ==============================
2314 /proc/asound/card#/pcm#[cp]/oss
2315 -------------------------------
2316 String "erase" - erase all additional informations about OSS applications
2317 String "<app_name> <fragments> <fragment_size> [<options>]"
2319 <app_name> - name of application with (higher priority) or without path
2320 <fragments> - number of fragments or zero if auto
2321 <fragment_size> - size of fragment in bytes or zero if auto
2322 <options> - optional parameters
2323 - disable the application tries to open a pcm device for
2324 this channel but does not want to use it.
2325 (Cause a bug or mmap needs)
2326 It's good for Quake etc...
2327 - direct don't use plugins
2328 - block force block mode (rvplayer)
2329 - non-block force non-block mode
2330 - whole-frag write only whole fragments (optimization affecting
2332 - no-silence do not fill silence ahead to avoid clicks
2333 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2334 instead of filled blocks
2336 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2337 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2338 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2341 Early Buffer Allocation
2342 =======================
2344 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2345 sometimes it's too late to find such spaces when the driver module is
2346 actually loaded due to memory fragmentation. You can pre-allocate the
2347 PCM buffers by loading snd-page-alloc module and write commands to its
2348 proc file in prior, for example, in the early boot stage like
2349 /etc/init.d/*.local scripts.
2351 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2352 usage of page allocation. In writing, you can send the following
2353 commands to the snd-page-alloc driver:
2355 - add VENDOR DEVICE MASK SIZE BUFFERS
2357 VENDOR and DEVICE are PCI vendor and device IDs. They take
2358 integer numbers (0x prefix is needed for the hex).
2359 MASK is the PCI DMA mask. Pass 0 if not restricted.
2360 SIZE is the size of each buffer to allocate. You can pass
2361 k and m suffix for KB and MB. The max number is 16MB.
2362 BUFFERS is the number of buffers to allocate. It must be greater
2363 than 0. The max number is 4.
2367 This will erase the all pre-allocated buffers which are not in
2374 ALSA project homepage
2375 http://www.alsa-project.org
2377 ALSA Bug Tracking System
2378 https://bugtrack.alsa-project.org/bugs/
2381 mailto:alsa-devel@alsa-project.org
projects / linux-2.6-omap-h63xx.git / blob