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.
61 - permission mask for dynamic sound device filesystem
62 - This is available only when DEVFS is enabled
64 - E.g.: device_mode=0660
70 The PCM OSS emulation module.
71 This module takes options which change the mapping of devices.
73 dsp_map - PCM device number maps assigned to the 1st OSS device.
75 adsp_map - PCM device number maps assigned to the 2st OSS device.
78 - Don't block opening busy PCM devices. Default: 1
80 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
81 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
82 to PCM #0 of the card #0.
83 For changing the second or later card, specify the option with
84 commas, such like "dsp_map=0,1".
86 nonblock_open option is used to change the behavior of the PCM
87 regarding opening the device. When this option is non-zero,
88 opening a busy OSS PCM device won't be blocked but return
89 immediately with EAGAIN (just like O_NONBLOCK flag).
94 This module takes options which change the mapping of devices.
95 similar to those of the snd-pcm-oss module.
97 midi_map - MIDI device number maps assigned to the 1st OSS device.
99 amidi_map - MIDI device number maps assigned to the 2st OSS device.
102 Common parameters for top sound card modules
103 --------------------------------------------
105 Each of top level sound card module takes the following options.
107 index - index (slot #) of sound card
108 - Values: 0 through 31 or negative
109 - If nonnegative, assign that index number
110 - if negative, interpret as a bitmask of permissible
111 indices; the first free permitted index is assigned
113 id - card ID (identifier or name)
114 - Can be up to 15 characters long
115 - Default: the card type
116 - A directory by this name is created under /proc/asound/
117 containing information about the card
118 - This ID can be used instead of the index number in
121 - Default: enabled, for PCI and ISA PnP cards
126 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
128 port - port # for AD1816A chip (PnP setup)
129 mpu_port - port # for MPU-401 UART (PnP setup)
130 fm_port - port # for OPL3 (PnP setup)
131 irq - IRQ # for AD1816A chip (PnP setup)
132 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
133 dma1 - first DMA # for AD1816A chip (PnP setup)
134 dma2 - second DMA # for AD1816A chip (PnP setup)
135 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
137 This module supports multiple cards, autoprobe and PnP.
142 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
144 port - port # for AD1848 chip
145 irq - IRQ # for AD1848 chip
146 dma1 - DMA # for AD1848 chip (0,1,3)
148 This module supports multiple cards. It does not support autoprobe
149 thus main port must be specified!!! Other ports are optional.
151 The power-management is supported.
156 Module for Analog Devices AD1889 chips.
158 ac97_quirk - AC'97 workaround for strange hardware
159 See the description of intel8x0 module for details.
161 This module supports multiple cards.
166 Module for ALi M5451 PCI chip.
168 pcm_channels - Number of hardware channels assigned for PCM
169 spdif - Support SPDIF I/O
172 This module supports one chip and autoprobe.
174 The power-management is supported.
179 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
181 port - port # for ALS100 (SB16) chip (PnP setup)
182 irq - IRQ # for ALS100 (SB16) chip (PnP setup)
183 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)
184 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)
185 mpu_port - port # for MPU-401 UART (PnP setup)
186 mpu_irq - IRQ # for MPU-401 (PnP setup)
187 fm_port - port # for OPL3 FM (PnP setup)
189 This module supports multiple cards, autoprobe and PnP.
191 The power-management is supported.
196 Module for sound cards based on Avance Logic ALS4000 PCI chip.
198 joystick_port - port # for legacy joystick support.
199 0 = disabled (default), 1 = auto-detect
201 This module supports multiple cards, autoprobe and PnP.
203 The power-management is supported.
208 Module for ATI IXP 150/200/250/400 AC97 controllers.
210 ac97_clock - AC'97 clock (default = 48000)
211 ac97_quirk - AC'97 workaround for strange hardware
212 See "AC97 Quirk Option" section below.
213 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
215 This module supports one card and autoprobe.
217 ATI IXP has two different methods to control SPDIF output. One is
218 over AC-link and another is over the "direct" SPDIF output. The
219 implementation depends on the motherboard, and you'll need to
220 choose the correct one via spdif_aclink module option.
222 The power-management is supported.
224 Module snd-atiixp-modem
225 -----------------------
227 Module for ATI IXP 150/200/250 AC97 modem controllers.
229 This module supports one card and autoprobe.
231 Note: The default index value of this module is -2, i.e. the first
234 The power-management is supported.
236 Module snd-au8810, snd-au8820, snd-au8830
237 -----------------------------------------
239 Module for Aureal Vortex, Vortex2 and Advantage device.
241 pcifix - Control PCI workarounds
242 0 = Disable all workarounds
243 1 = Force the PCI latency of the Aureal card to 0xff
244 2 = Force the Extend PCI#2 Internal Master for Efficient
245 Handling of Dummy Requests on the VIA KT133 AGP Bridge
246 3 = Force both settings
247 255 = Autodetect what is required (default)
249 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
250 EQ, mpu401, gameport. A3D and wavetable support are still in development.
251 Development and reverse engineering work is being coordinated at
252 http://savannah.nongnu.org/projects/openvortex/
253 SPDIF output has a copy of the AC97 codec output, unless you use the
254 "spdif" pcm device, which allows raw data passthru.
255 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
258 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
259 control correctly. If you have problems regarding this, try
260 another ALSA compliant mixer (alsamixer works).
265 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
267 port - port # for AZT2320 chip (PnP setup)
268 wss_port - port # for WSS (PnP setup)
269 mpu_port - port # for MPU-401 UART (PnP setup)
270 fm_port - FM port # for AZT2320 chip (PnP setup)
271 irq - IRQ # for AZT2320 (WSS) chip (PnP setup)
272 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
273 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
274 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
276 This module supports multiple cards, PnP and autoprobe.
278 The power-management is supported.
283 Module for sound cards based on Aztech AZF3328 PCI chip.
285 joystick - Enable joystick (default off)
287 This module supports multiple cards.
292 Module for video cards based on Bt87x chips.
294 digital_rate - Override the default digital rate (Hz)
295 load_all - Load the driver even if the card model isn't known
297 This module supports multiple cards.
299 Note: The default index value of this module is -2, i.e. the first
305 Module for Creative Audigy LS and SB Live 24bit
307 This module supports multiple cards.
313 Module for sound cards based on C-Media CMI8330 ISA chips.
315 wssport - port # for CMI8330 chip (WSS)
316 wssirq - IRQ # for CMI8330 chip (WSS)
317 wssdma - first DMA # for CMI8330 chip (WSS)
318 sbport - port # for CMI8330 chip (SB16)
319 sbirq - IRQ # for CMI8330 chip (SB16)
320 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
321 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
323 This module supports multiple cards and autoprobe.
325 The power-management is supported.
330 Module for C-Media CMI8338 and 8738 PCI sound cards.
332 mpu_port - 0x300,0x310,0x320,0x330, 0 = disable (default)
333 fm_port - 0x388 (default), 0 = disable (default)
334 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
336 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
338 This module supports autoprobe and multiple cards.
340 The power-management is supported.
345 Module for sound cards based on CS4231 ISA chips.
347 port - port # for CS4231 chip
348 mpu_port - port # for MPU-401 UART (optional), -1 = disable
349 irq - IRQ # for CS4231 chip
350 mpu_irq - IRQ # for MPU-401 UART
351 dma1 - first DMA # for CS4231 chip
352 dma2 - second DMA # for CS4231 chip
354 This module supports multiple cards. This module does not support autoprobe
355 thus main port must be specified!!! Other ports are optional.
357 The power-management is supported.
362 Module for sound cards based on CS4232/CS4232A ISA chips.
364 port - port # for CS4232 chip (PnP setup - 0x534)
365 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
366 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
367 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
368 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
369 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
370 dma1 - first DMA # for CS4232 chip (0,1,3)
371 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
372 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
374 This module supports multiple cards. This module does not support autoprobe
375 thus main port must be specified!!! Other ports are optional.
377 The power-management is supported.
382 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
383 CS4238B/CS4239 ISA chips.
385 port - port # for CS4236 chip (PnP setup - 0x534)
386 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
387 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
388 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
389 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
390 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
391 dma1 - first DMA # for CS4236 chip (0,1,3)
392 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
393 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
395 This module supports multiple cards. This module does not support autoprobe
396 (if ISA PnP is not used) thus main port and control port must be
397 specified!!! Other ports are optional.
399 The power-management is supported.
404 Module for Cirrus Logic CS4281 soundchip.
406 dual_codec - Secondary codec ID (0 = disable, default)
408 This module supports multiple cards.
410 The power-management is supported.
415 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
416 CS4624/CS4630/CS4280 PCI chips.
418 external_amp - Force to enable external amplifier.
419 thinkpad - Force to enable Thinkpad's CLKRUN control.
420 mmap_valid - Support OSS mmap mode (default = 0).
422 This module supports multiple cards and autoprobe.
423 Usually external amp and CLKRUN controls are detected automatically
424 from PCI sub vendor/device ids. If they don't work, give the options
427 The power-management is supported.
429 Module snd-cs5535audio
430 ----------------------
432 Module for multifunction CS5535 companion PCI device
434 This module supports multiple cards.
439 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
442 port - Port # (PnP setup)
443 mpu_port - Port # for MPU-401 (PnP setup)
444 fm_port - Port # for FM OPL-3 (PnP setup)
445 irq - IRQ # (PnP setup)
446 mpu_irq - IRQ # for MPU-401 (PnP setup)
447 dma8 - DMA # (PnP setup)
449 This module supports multiple cards. This module is enabled only with
452 The power-management is supported.
457 Module for the dummy sound card. This "card" doesn't do any output
458 or input, but you may use this module for any application which
459 requires a sound card (like RealPlayer).
461 The power-management is supported.
466 Module for EMU10K1/EMU10k2 based PCI sound cards.
467 * Sound Blaster Live!
468 * Sound Blaster PCI 512
469 * Emu APS (partially supported)
470 * Sound Blaster Audigy
472 extin - bitmap of available external inputs for FX8010 (see bellow)
473 extout - bitmap of available external outputs for FX8010 (see bellow)
474 seq_ports - allocated sequencer ports (4 by default)
475 max_synth_voices - limit of voices used for wavetable (64 by default)
476 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
477 given in MB unit. Default value is 128.
478 enable_ir - enable IR
480 This module supports multiple cards and autoprobe.
482 Input & Output configurations [extin/extout]
483 * Creative Card wo/Digital out [0x0003/0x1f03]
484 * Creative Card w/Digital out [0x0003/0x1f0f]
485 * Creative Card w/Digital CD in [0x000f/0x1f0f]
486 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
487 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
488 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
489 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
490 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
491 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
492 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
493 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
494 * Creative Card all ins and outs [0x3fff/0x7fff]
496 The power-management is supported.
501 Module for Creative Emu10k1X (SB Live Dell OEM version)
503 This module supports multiple cards.
508 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
509 * SoundBlaster PCI 64
510 * SoundBlaster PCI 128
512 joystick - Enable joystick (default off)
514 This module supports multiple cards and autoprobe.
519 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
520 * SoundBlaster PCI 64
521 * SoundBlaster PCI 128
522 * SoundBlaster Vibra PCI
524 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
525 0 = disable (default), 1 = auto-detect
527 This module supports multiple cards and autoprobe.
532 Module for sound cards based on ESS ES968 chip (PnP only).
534 port - port # for ES968 (SB8) chip (PnP setup)
535 irq - IRQ # for ES968 (SB8) chip (PnP setup)
536 dma1 - DMA # for ES968 (SB8) chip (PnP setup)
538 This module supports multiple cards, PnP and autoprobe.
540 The power-management is supported.
545 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
547 port - port # for ES-1688 chip (0x220,0x240,0x260)
548 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
549 irq - IRQ # for ES-1688 chip (5,7,9,10)
550 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
551 dma8 - DMA # for ES-1688 chip (0,1,3)
553 This module supports multiple cards and autoprobe (without MPU-401 port).
558 Module for ESS AudioDrive ES-18xx sound cards.
560 port - port # for ES-18xx chip (0x220,0x240,0x260)
561 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
562 fm_port - port # for FM (optional, not used)
563 irq - IRQ # for ES-18xx chip (5,7,9,10)
564 dma1 - first DMA # for ES-18xx chip (0,1,3)
565 dma2 - first DMA # for ES-18xx chip (0,1,3)
566 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
568 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
569 port if native ISA PnP routines are not used).
570 When dma2 is equal with dma1, the driver works as half-duplex.
572 The power-management is supported.
577 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
579 This module supports multiple cards and autoprobe.
581 The power-management is supported.
586 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
588 total_bufsize - total buffer size in kB (1-4096kB)
589 pcm_substreams_p - playback channels (1-8, default=2)
590 pcm_substreams_c - capture channels (1-8, default=0)
591 clock - clock (0 = auto-detection)
592 use_pm - support the power-management (0 = off, 1 = on,
594 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
595 joystick - enable joystick (default off)
597 This module supports multiple cards and autoprobe.
599 The power-management is supported.
604 Module for ForteMedia FM801 based PCI sound cards.
606 tea575x_tuner - Enable TEA575x tuner
607 - 1 = MediaForte 256-PCS
608 - 2 = MediaForte 256-PCPR
609 - 3 = MediaForte 64-PCR
610 - High 16-bits are video (radio) device number + 1
611 - example: 0x10002 (MediaForte 256-PCPR, device 1)
613 This module supports multiple cards and autoprobe.
615 The power-management is supported.
617 Module snd-gusclassic
618 ---------------------
620 Module for Gravis UltraSound Classic sound card.
622 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
623 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
624 dma1 - DMA # for GF1 chip (1,3,5,6,7)
625 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
626 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
627 voices - GF1 voices limit (14-32)
628 pcm_voices - reserved PCM voices
630 This module supports multiple cards and autoprobe.
632 Module snd-gusextreme
633 ---------------------
635 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
637 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
638 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
639 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
640 irq - IRQ # for ES-1688 chip (5,7,9,10)
641 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
642 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
643 dma8 - DMA # for ES-1688 chip (0,1,3)
644 dma1 - DMA # for GF1 chip (1,3,5,6,7)
645 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
646 voices - GF1 voices limit (14-32)
647 pcm_voices - reserved PCM voices
649 This module supports multiple cards and autoprobe (without MPU-401 port).
654 Module for Gravis UltraSound MAX sound card.
656 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
657 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
658 dma1 - DMA # for GF1 chip (1,3,5,6,7)
659 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
660 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
661 voices - GF1 voices limit (14-32)
662 pcm_voices - reserved PCM voices
664 This module supports multiple cards and autoprobe.
669 Module for Intel HD Audio (ICH6, ICH6M, ICH7), ATI SB450,
672 model - force the model name
673 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
675 This module supports one card and autoprobe.
677 Each codec may have a model table for different configurations.
678 If your machine isn't listed there, the default (usually minimal)
679 configuration is set up. You can pass "model=<name>" option to
680 specify a certain model in such a case. There are different
681 models depending on the codec chip.
683 Model name Description
684 ---------- -----------
686 3stack 3-jack in back and a headphone out
687 3stack-digout 3-jack in back, a HP out and a SPDIF out
688 5stack 5-jack in back, 2-jack in front
689 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
690 6stack 6-jack in back, 2-jack in front
691 6stack-digout 6-jack with a SPDIF out
693 z71v 3-jack (HP shared SPDIF)
697 test for testing/debugging purpose, almost all controls can be
698 adjusted. Appearing only when compiled with
703 fujitsu Fujitsu S7020
706 minimal 3-jack in back
707 min_fp 3-jack in back, 2-jack in front
708 full 6-jack in back, 2-jack in front
709 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
710 allout 5-jack in back, 2-jack in front, SPDIF out
711 auto auto-config reading BIOS (default)
713 If the default configuration doesn't work and one of the above
714 matches with your device, report it together with the PCI
715 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
716 ML (see the section "Links and Addresses").
718 Note 2: If you get click noises on output, try the module option
719 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
720 register value without FIFO size correction as the current
721 DMA pointer. position_fix=2 will make the driver to use
722 the position buffer instead of reading SD_LPIB register.
723 (Usually SD_LPLIB register is more accurate than the
726 The power-management is supported.
731 Module for RME Hammerfall DSP audio interface(s)
733 This module supports multiple cards.
735 Note: The firmware data can be automatically loaded via hotplug
736 when CONFIG_FW_LOADER is set. Otherwise, you need to load
737 the firmware via hdsploader utility included in alsa-tools
739 The firmware data is found in alsa-firmware package.
741 Note: snd-page-alloc module does the job which snd-hammerfall-mem
742 module did formerly. It will allocate the buffers in advance
743 when any HDSP cards are found. To make the buffer
744 allocation sure, load snd-page-alloc module in the early
745 stage of boot sequence. See "Early Buffer Allocation"
751 Module for RME HDSP MADI board.
753 precise_ptr - Enable precise pointer, or disable.
754 line_outs_monitor - Send playback streams to analog outs by default.
755 enable_monitor - Enable Analog Out on Channel 63/64 by default.
757 See hdspm.txt for details.
762 Module for Envy24 (ICE1712) based PCI sound cards.
763 * MidiMan M Audio Delta 1010
764 * MidiMan M Audio Delta 1010LT
765 * MidiMan M Audio Delta DiO 2496
766 * MidiMan M Audio Delta 66
767 * MidiMan M Audio Delta 44
768 * MidiMan M Audio Delta 410
769 * MidiMan M Audio Audiophile 2496
775 * Hoontech SoundTrack DSP 24
776 * Hoontech SoundTrack DSP 24 Value
777 * Hoontech SoundTrack DSP 24 Media 7.1
778 * Event Electronics, EZ8
780 * Lionstracs, Mediastaton
782 model - Use the given board model, one of the following:
783 delta1010, dio2496, delta66, delta44, audiophile, delta410,
784 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
785 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
786 phase88, mediastation
787 omni - Omni I/O support for MidiMan M-Audio Delta44/66
788 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever)
789 in msec resolution, default value is 500 (0.5 sec)
791 This module supports multiple cards and autoprobe. Note: The consumer part
792 is not used with all Envy24 based cards (for example in the MidiMan Delta
795 Note: The supported board is detected by reading EEPROM or PCI
796 SSID (if EEPROM isn't available). You can override the
797 model by passing "model" module option in case that the
798 driver isn't configured properly or you want to try another
804 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
805 * MidiMan M Audio Revolution 7.1
807 * TerraTec Aureon 5.1 Sky
808 * TerraTec Aureon 7.1 Space
809 * TerraTec Aureon 7.1 Universe
812 * AudioTrak Prodigy 7.1
813 * AudioTrak Prodigy 192
815 * Albatron K8X800 Pro II
822 model - Use the given board model, one of the following:
823 revo71, amp2000, prodigy71, prodigy192, aureon51,
824 aureon71, universe, k8x800, phase22, phase28, ms300,
827 This module supports multiple cards and autoprobe.
829 Note: The supported board is detected by reading EEPROM or PCI
830 SSID (if EEPROM isn't available). You can override the
831 model by passing "model" module option in case that the
832 driver isn't configured properly or you want to try another
838 Module for AC'97 motherboards from Intel and compatibles.
839 * Intel i810/810E, i815, i820, i830, i84x, MX440
841 * NVidia NForce, NForce2
842 * AMD AMD768, AMD8111
845 ac97_clock - AC'97 codec clock base (0 = auto-detect)
846 ac97_quirk - AC'97 workaround for strange hardware
847 See "AC97 Quirk Option" section below.
848 buggy_irq - Enable workaround for buggy interrupts on some
849 motherboards (default yes on nForce chips,
851 buggy_semaphore - Enable workaround for hardwares with buggy
852 semaphores (e.g. on some ASUS laptops)
855 This module supports one chip and autoprobe.
857 Note: the latest driver supports auto-detection of chip clock.
858 if you still encounter too fast playback, specify the clock
859 explicitly via the module option "ac97_clock=41194".
861 Joystick/MIDI ports are not supported by this driver. If your
862 motherboard has these devices, use the ns558 or snd-mpu401
863 modules, respectively.
865 The power-management is supported.
870 Module for Intel ICH (i8x0) chipset MC97 modems.
872 ac97_clock - AC'97 codec clock base (0 = auto-detect)
874 This module supports one card and autoprobe.
876 Note: The default index value of this module is -2, i.e. the first
879 The power-management is supported.
884 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
885 and other sound cards based on AMD InterWave (tm) chip.
887 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
888 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
889 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
890 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
891 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
892 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
893 pcm_voices - reserved PCM voices for the synthesizer (default 2)
894 effect - 1 = InterWave effects enable (default 0);
897 This module supports multiple cards, autoprobe and ISA PnP.
899 Module snd-interwave-stb
900 ------------------------
902 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
903 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
904 circuit for extended control of bass, treble and master volume.
906 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
907 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
908 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
909 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
910 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
911 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
912 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
913 pcm_voices - reserved PCM voices for the synthesizer (default 2)
914 effect - 1 = InterWave effects enable (default 0);
917 This module supports multiple cards, autoprobe and ISA PnP.
922 Module for Korg 1212 IO PCI card
924 This module supports multiple cards.
929 Module for Allegro/Maestro3 chips
931 external_amp - enable external amp (enabled by default)
932 amp_gpio - GPIO pin number for external amp (0-15) or
933 -1 for default pin (8 for allegro, 1 for
936 This module supports autoprobe and multiple chips.
938 Note: the binding of amplifier is dependent on hardware.
939 If there is no sound even though all channels are unmuted, try to
940 specify other gpio connection via amp_gpio option.
941 For example, a Panasonic notebook might need "amp_gpio=0x0d"
944 The power-management is supported.
949 Module for Digigram miXart8 sound cards.
951 This module supports multiple cards.
952 Note: One miXart8 board will be represented as 4 alsa cards.
953 See MIXART.txt for details.
955 When the driver is compiled as a module and the hotplug firmware
956 is supported, the firmware data is loaded via hotplug automatically.
957 Install the necessary firmware files in alsa-firmware package.
958 When no hotplug fw loader is available, you need to load the
959 firmware via mixartloader utility in alsa-tools package.
964 Module for MPU-401 UART devices.
966 port - port number or -1 (disable)
967 irq - IRQ number or -1 (disable)
968 pnp - PnP detection - 0 = disable, 1 = enable (default)
970 This module supports multiple devices and PnP.
975 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
978 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
979 irq - IRQ # for MTPAV (7,5, default=7)
980 hwports - number of supported hardware ports, default=8.
982 Module supports only 1 card. This module has no enable option.
987 Module for NeoMagic NM256AV/ZX chips
989 playback_bufsize - max playback frame size in kB (4-128kB)
990 capture_bufsize - max capture frame size in kB (4-128kB)
991 force_ac97 - 0 or 1 (disabled by default)
992 buffer_top - specify buffer top address
993 use_cache - 0 or 1 (disabled by default)
994 vaio_hack - alias buffer_top=0x25a800
995 reset_workaround - enable AC97 RESET workaround for some laptops
996 reset_workaround2 - enable extended AC97 RESET workaround for some
999 This module supports one chip and autoprobe.
1001 The power-management is supported.
1003 Note: on some notebooks the buffer address cannot be detected
1004 automatically, or causes hang-up during initialization.
1005 In such a case, specify the buffer top address explicity via
1008 Sony F250: buffer_top=0x25a800
1009 Sony F270: buffer_top=0x272800
1010 The driver supports only ac97 codec. It's possible to force
1011 to initialize/use ac97 although it's not detected. In such a
1012 case, use force_ac97=1 option - but *NO* guarantee whether it
1015 Note: The NM256 chip can be linked internally with non-AC97
1016 codecs. This driver supports only the AC97 codec, and won't work
1017 with machines with other (most likely CS423x or OPL3SAx) chips,
1018 even though the device is detected in lspci. In such a case, try
1019 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1020 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1021 and proper hardware parameters in the case without ISA PnP.
1023 Note: some laptops need a workaround for AC97 RESET. For the
1024 known hardware like Dell Latitude LS and Sony PCG-F305, this
1025 workaround is enabled automatically. For other laptops with a
1026 hard freeze, you can try reset_workaround=1 option.
1028 Note: Dell Latitude CSx laptops have another problem regarding
1029 AC97 RESET. On these laptops, reset_workaround2 option is
1030 turned on as default. This option is worth to try if the
1031 previous reset_workaround option doesn't help.
1033 Note: This driver is really crappy. It's a porting from the
1034 OSS driver, which is a result of black-magic reverse engineering.
1035 The detection of codec will fail if the driver is loaded *after*
1036 X-server as described above. You might be able to force to load
1037 the module, but it may result in hang-up. Hence, make sure that
1038 you load this module *before* X if you encounter this kind of
1044 Module for Yamaha OPL3-SA2/SA3 sound cards.
1046 port - control port # for OPL3-SA chip (0x370)
1047 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1048 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1049 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1050 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1051 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1052 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1053 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1054 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1056 This module supports multiple cards and ISA PnP. It does not support
1057 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1059 The power-management is supported.
1061 Module snd-opti92x-ad1848
1062 -------------------------
1064 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1065 Module works with OAK Mozart cards as well.
1067 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1068 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1069 fm_port - port # for OPL3 device (0x388)
1070 irq - IRQ # for WSS chip (5,7,9,10,11)
1071 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1072 dma1 - first DMA # for WSS chip (0,1,3)
1074 This module supports only one card, autoprobe and PnP.
1076 Module snd-opti92x-cs4231
1077 -------------------------
1079 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1081 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1082 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1083 fm_port - port # for OPL3 device (0x388)
1084 irq - IRQ # for WSS chip (5,7,9,10,11)
1085 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1086 dma1 - first DMA # for WSS chip (0,1,3)
1087 dma2 - second DMA # for WSS chip (0,1,3)
1089 This module supports only one card, autoprobe and PnP.
1094 Module for sound cards based on OPTi 82c93x chips.
1096 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1097 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1098 fm_port - port # for OPL3 device (0x388)
1099 irq - IRQ # for WSS chip (5,7,9,10,11)
1100 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1101 dma1 - first DMA # for WSS chip (0,1,3)
1102 dma2 - second DMA # for WSS chip (0,1,3)
1104 This module supports only one card, autoprobe and PnP.
1109 Module for Digigram PCXHR boards
1111 This module supports multiple cards.
1113 Module snd-powermac (on ppc only)
1114 ---------------------------------
1116 Module for PowerMac, iMac and iBook on-board soundchips
1118 enable_beep - enable beep using PCM (enabled as default)
1120 Module supports autoprobe a chip.
1122 Note: the driver may have problems regarding endianess.
1124 The power-management is supported.
1126 Module snd-pxa2xx-ac97 (on arm only)
1127 ------------------------------------
1129 Module for AC97 driver for the Intel PXA2xx chip
1131 For ARM architecture only.
1133 The power-management is supported.
1138 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1139 Prodif96 and Prodif Gold) sound cards.
1141 This module supports multiple cards.
1146 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1148 This module supports multiple cards.
1153 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1155 precise_ptr - Enable precise pointer (doesn't work reliably).
1158 This module supports multiple cards.
1160 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1161 module did formerly. It will allocate the buffers in advance
1162 when any RME9652 cards are found. To make the buffer
1163 allocation sure, load snd-page-alloc module in the early
1164 stage of boot sequence. See "Early Buffer Allocation"
1167 Module snd-sa11xx-uda1341 (on arm only)
1168 ---------------------------------------
1170 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1172 Module supports only one card.
1173 Module has no enable and index options.
1175 The power-management is supported.
1180 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1184 port - port # for SB DSP chip (0x220,0x240,0x260)
1185 irq - IRQ # for SB DSP chip (5,7,9,10)
1186 dma8 - DMA # for SB DSP chip (1,3)
1188 This module supports multiple cards and autoprobe.
1190 The power-management is supported.
1192 Module snd-sb16 and snd-sbawe
1193 -----------------------------
1195 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1196 SoundBlaster AWE 32 (PnP),
1197 SoundBlaster AWE 64 PnP
1199 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1200 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1201 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1202 (snd-sbawe module only)
1203 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1204 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1205 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1206 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1207 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1208 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1210 This module supports multiple cards, autoprobe and ISA PnP.
1212 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1213 disable 16bit DMA with dma16 = -1 module parameter.
1214 Also, all Sound Blaster 16 type cards can operate in 16-bit
1215 half duplex mode through 8-bit DMA channel by disabling their
1218 The power-management is supported.
1223 Module for Aztech Sound Galaxy sound card.
1225 sbport - Port # for SB16 interface (0x220,0x240)
1226 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1227 irq - IRQ # (7,9,10,11)
1230 This module supports multiple cards.
1232 The power-management is supported.
1237 Module for ENSONIQ SoundScape PnP cards.
1239 port - Port # (PnP setup)
1240 irq - IRQ # (PnP setup)
1241 mpu_irq - MPU-401 IRQ # (PnP setup)
1242 dma - DMA # (PnP setup)
1244 This module supports multiple cards. ISA PnP must be enabled.
1245 You need sscape_ctl tool in alsa-tools package for loading
1248 Module snd-sun-amd7930 (on sparc only)
1249 --------------------------------------
1251 Module for AMD7930 sound chips found on Sparcs.
1253 This module supports multiple cards.
1255 Module snd-sun-cs4231 (on sparc only)
1256 -------------------------------------
1258 Module for CS4231 sound chips found on Sparcs.
1260 This module supports multiple cards.
1262 Module snd-sun-dbri (on sparc only)
1263 -----------------------------------
1265 Module for DBRI sound chips found on Sparcs.
1267 This module supports multiple cards.
1269 Module snd-wavefront
1270 --------------------
1272 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1274 cs4232_pcm_port - Port # for CS4232 PCM interface.
1275 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1276 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1277 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1278 use_cs4232_midi - Use CS4232 MPU-401 interface
1279 (inaccessibly located inside your computer)
1280 ics2115_port - Port # for ICS2115
1281 ics2115_irq - IRQ # for ICS2115
1282 fm_port - FM OPL-3 Port #
1283 dma1 - DMA1 # for CS4232 PCM interface.
1284 dma2 - DMA2 # for CS4232 PCM interface.
1285 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1287 This module supports multiple cards and ISA PnP.
1289 Module snd-sonicvibes
1290 ---------------------
1292 Module for S3 SonicVibes PCI sound cards.
1293 * PINE Schubert 32 PCI
1295 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1296 - SoundCard must have onboard SRAM for this.
1297 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1299 This module supports multiple cards and autoprobe.
1301 Module snd-serial-u16550
1302 ------------------------
1304 Module for UART16550A serial MIDI ports.
1306 port - port # for UART16550A chip
1307 irq - IRQ # for UART16550A chip, -1 = poll mode
1308 speed - speed in bauds (9600,19200,38400,57600,115200)
1310 base - base for divisor in bauds (57600,115200,230400,460800)
1312 outs - number of MIDI ports in a serial port (1-4)
1314 adaptor - Type of adaptor.
1315 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1316 3 = MS-124W M/B, 4 = Generic
1318 This module supports multiple cards. This module does not support autoprobe
1319 thus the main port must be specified!!! Other options are optional.
1324 Module for Trident 4DWave DX/NX sound cards.
1325 * Best Union Miss Melody 4DWave PCI
1327 * Warpspeed ONSpeed 4DWave PCI
1330 * CHIC True Sound 4Dwave
1331 * Shark Predator4D-PCI
1332 * Jaton SonicWave 4D
1334 pcm_channels - max channels (voices) reserved for PCM
1335 wavetable_size - max wavetable size in kB (4-?kb)
1337 This module supports multiple cards and autoprobe.
1339 The power-management is supported.
1341 Module snd-usb-audio
1342 --------------------
1344 Module for USB audio and USB MIDI devices.
1346 vid - Vendor ID for the device (optional)
1347 pid - Product ID for the device (optional)
1349 This module supports multiple devices, autoprobe and hotplugging.
1351 Module snd-usb-usx2y
1352 --------------------
1354 Module for Tascam USB US-122, US-224 and US-428 devices.
1356 This module supports multiple devices, autoprobe and hotplugging.
1358 Note: you need to load the firmware via usx2yloader utility included
1359 in alsa-tools and alsa-firmware packages.
1364 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1365 8233A, 8233C, 8235, 8237 (south) bridge.
1367 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1369 joystick - Enable joystick (default off) [VIA686A/686B only]
1370 ac97_clock - AC'97 codec clock base (default 48000Hz)
1371 dxs_support - support DXS channels,
1372 0 = auto (default), 1 = enable, 2 = disable,
1373 3 = 48k only, 4 = no VRA, 5 = enable any sample
1374 rate and different sample rates on different
1376 [VIA8233/C, 8235, 8237 only]
1377 ac97_quirk - AC'97 workaround for strange hardware
1378 See "AC97 Quirk Option" section below.
1380 This module supports one chip and autoprobe.
1382 Note: on some SMP motherboards like MSI 694D the interrupts might
1383 not be generated properly. In such a case, please try to
1384 set the SMP (or MPS) version on BIOS to 1.1 instead of
1385 default value 1.4. Then the interrupt number will be
1386 assigned under 15. You might also upgrade your BIOS.
1388 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1389 channels as the first PCM. On these channels, up to 4
1390 streams can be played at the same time, and the controller
1391 can perform sample rate conversion with separate rates for
1393 As default (dxs_support = 0), 48k fixed rate is chosen
1394 except for the known devices since the output is often
1395 noisy except for 48k on some mother boards due to the
1397 Please try once dxs_support=5 and if it works on other
1398 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1399 know the PCI subsystem vendor/device id's (output of
1401 If dxs_support=5 does not work, try dxs_support=4; if it
1402 doesn't work too, try dxs_support=1. (dxs_support=1 is
1403 usually for old motherboards. The correct implemented
1404 board should work with 4 or 5.) If it still doesn't
1405 work and the default setting is ok, dxs_support=3 is the
1406 right choice. If the default setting doesn't work at all,
1407 try dxs_support=2 to disable the DXS channels.
1408 In any cases, please let us know the result and the
1409 subsystem vendor/device ids. See "Links and Addresses"
1412 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1413 additionally. The mpu_port option is for VIA686 chips only.
1415 The power-management is supported.
1417 Module snd-via82xx-modem
1418 ------------------------
1420 Module for VIA82xx AC97 modem
1422 ac97_clock - AC'97 codec clock base (default 48000Hz)
1424 This module supports one card and autoprobe.
1426 Note: The default index value of this module is -2, i.e. the first
1429 The power-management is supported.
1434 Module for virtual rawmidi devices.
1435 This module creates virtual rawmidi devices which communicate
1436 to the corresponding ALSA sequencer ports.
1438 midi_devs - MIDI devices # (1-4, default=4)
1440 This module supports multiple cards.
1445 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1447 mic - Enable Microphone on V222 Mic (NYI)
1448 ibl - Capture IBL size. (default = 0, minimum size)
1450 This module supports multiple cards.
1452 When the driver is compiled as a module and the hotplug firmware
1453 is supported, the firmware data is loaded via hotplug automatically.
1454 Install the necessary firmware files in alsa-firmware package.
1455 When no hotplug fw loader is available, you need to load the
1456 firmware via vxloader utility in alsa-tools package. To invoke
1457 vxloader automatically, add the following to /etc/modprobe.conf
1459 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1461 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1462 /etc/modules.conf, instead.)
1463 IBL size defines the interrupts period for PCM. The smaller size
1464 gives smaller latency but leads to more CPU consumption, too.
1465 The size is usually aligned to 126. As default (=0), the smallest
1466 size is chosen. The possible IBL values can be found in
1467 /proc/asound/cardX/vx-status proc file.
1469 The power-management is supported.
1474 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
1476 ibl - Capture IBL size. (default = 0, minimum size)
1478 This module supports multiple cards. The module is compiled only when
1479 PCMCIA is supported on kernel.
1481 With the older 2.6.x kernel, to activate the driver via the card
1482 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
1483 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
1484 longer require a config file.
1486 When the driver is compiled as a module and the hotplug firmware
1487 is supported, the firmware data is loaded via hotplug automatically.
1488 Install the necessary firmware files in alsa-firmware package.
1489 When no hotplug fw loader is available, you need to load the
1490 firmware via vxloader utility in alsa-tools package.
1492 About capture IBL, see the description of snd-vx222 module.
1494 Note: the driver is build only when CONFIG_ISA is set.
1496 Note2: snd-vxp440 driver is merged to snd-vxpocket driver since
1499 The power-management is supported.
1504 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
1506 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
1507 1 (auto-detect for YMF744/754 only)
1508 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
1509 1 (auto-detect for YMF744/754 only)
1510 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
1512 rear_switch - enable shared rear/line-in switch (bool)
1514 This module supports autoprobe and multiple chips.
1516 The power-management is supported.
1518 Module snd-pdaudiocf
1519 --------------------
1521 Module for Sound Core PDAudioCF sound card.
1523 Note: the driver is build only when CONFIG_ISA is set.
1525 The power-management is supported.
1531 The ac97_quirk option is used to enable/override the workaround for
1532 specific devices on drivers for on-board AC'97 controllers like
1533 snd-intel8x0. Some hardware have swapped output pins between Master
1534 and Headphone, or Surround (thanks to confusion of AC'97
1535 specifications from version to version :-)
1537 The driver provides the auto-detection of known problematic devices,
1538 but some might be unknown or wrongly detected. In such a case, pass
1539 the proper value with this option.
1541 The following strings are accepted:
1542 - default Don't override the default setting
1543 - none Disable the quirk
1544 - hp_only Bind Master and Headphone controls as a single control
1545 - swap_hp Swap headphone and master controls
1546 - swap_surround Swap master and surround controls
1547 - ad_sharing For AD1985, turn on OMS bit and use headphone
1548 - alc_jack For ALC65x, turn on the jack sense mode
1549 - inv_eapd Inverted EAPD implementation
1550 - mute_led Bind EAPD bit for turning on/off mute LED
1552 For backward compatibility, the corresponding integer value -1, 0,
1553 ... are accepted, too.
1555 For example, if "Master" volume control has no effect on your device
1556 but only "Headphone" does, pass ac97_quirk=hp_only module option.
1559 Configuring Non-ISAPNP Cards
1560 ============================
1562 When the kernel is configured with ISA-PnP support, the modules
1563 supporting the isapnp cards will have module options "isapnp".
1564 If this option is set, *only* the ISA-PnP devices will be probed.
1565 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
1566 together with the proper i/o and irq configuration.
1568 When the kernel is configured without ISA-PnP support, isapnp option
1569 will be not built in.
1572 Module Autoloading Support
1573 ==========================
1575 The ALSA drivers can be loaded automatically on demand by defining
1576 module aliases. The string 'snd-card-%1' is requested for ALSA native
1577 devices where %i is sound card number from zero to seven.
1579 To auto-load an ALSA driver for OSS services, define the string
1580 'sound-slot-%i' where %i means the slot number for OSS, which
1581 corresponds to the card index of ALSA. Usually, define this
1582 as the same card module.
1584 An example configuration for a single emu10k1 card is like below:
1585 ----- /etc/modprobe.conf
1586 alias snd-card-0 snd-emu10k1
1587 alias sound-slot-0 snd-emu10k1
1588 ----- /etc/modprobe.conf
1590 The available number of auto-loaded sound cards depends on the module
1591 option "cards_limit" of snd module. As default it's set to 1.
1592 To enable the auto-loading of multiple cards, specify the number of
1593 sound cards in that option.
1595 When multiple cards are available, it'd better to specify the index
1596 number for each card via module option, too, so that the order of
1597 cards is kept consistent.
1599 An example configuration for two sound cards is like below:
1601 ----- /etc/modprobe.conf
1603 options snd cards_limit=2
1604 alias snd-card-0 snd-interwave
1605 alias snd-card-1 snd-ens1371
1606 options snd-interwave index=0
1607 options snd-ens1371 index=1
1609 alias sound-slot-0 snd-interwave
1610 alias sound-slot-1 snd-ens1371
1611 ----- /etc/moprobe.conf
1613 In this example, the interwave card is always loaded as the first card
1614 (index 0) and ens1371 as the second (index 1).
1617 ALSA PCM devices to OSS devices mapping
1618 =======================================
1620 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
1621 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
1622 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
1623 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
1624 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
1625 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
1626 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
1627 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
1628 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
1630 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
1631 sound card number and second means device number. The ALSA devices
1632 have either 'c' or 'p' suffix indicating the direction, capture and
1633 playback, respectively.
1635 Please note that the device mapping above may be varied via the module
1636 options of snd-pcm-oss module.
1642 The ALSA driver fully supports the devfs extension.
1643 You should add lines below to your devfsd.conf file:
1645 LOOKUP snd MODLOAD ACTION snd
1646 REGISTER ^sound/.* PERMISSIONS root.audio 660
1647 REGISTER ^snd/.* PERMISSIONS root.audio 660
1649 Warning: These lines assume that you have the audio group in your system.
1650 Otherwise replace audio word with another group name (root for
1654 Proc interfaces (/proc/asound)
1655 ==============================
1657 /proc/asound/card#/pcm#[cp]/oss
1658 -------------------------------
1659 String "erase" - erase all additional informations about OSS applications
1660 String "<app_name> <fragments> <fragment_size> [<options>]"
1662 <app_name> - name of application with (higher priority) or without path
1663 <fragments> - number of fragments or zero if auto
1664 <fragment_size> - size of fragment in bytes or zero if auto
1665 <options> - optional parameters
1666 - disable the application tries to open a pcm device for
1667 this channel but does not want to use it.
1668 (Cause a bug or mmap needs)
1669 It's good for Quake etc...
1670 - direct don't use plugins
1671 - block force block mode (rvplayer)
1672 - non-block force non-block mode
1673 - whole-frag write only whole fragments (optimization affecting
1675 - no-silence do not fill silence ahead to avoid clicks
1676 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
1677 instead of filled blocks
1679 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
1680 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
1681 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
1684 Early Buffer Allocation
1685 =======================
1687 Some drivers (e.g. hdsp) require the large contiguous buffers, and
1688 sometimes it's too late to find such spaces when the driver module is
1689 actually loaded due to memory fragmentation. You can pre-allocate the
1690 PCM buffers by loading snd-page-alloc module and write commands to its
1691 proc file in prior, for example, in the early boot stage like
1692 /etc/init.d/*.local scripts.
1694 Reading the proc file /proc/drivers/snd-page-alloc shows the current
1695 usage of page allocation. In writing, you can send the following
1696 commands to the snd-page-alloc driver:
1698 - add VENDOR DEVICE MASK SIZE BUFFERS
1700 VENDOR and DEVICE are PCI vendor and device IDs. They take
1701 integer numbers (0x prefix is needed for the hex).
1702 MASK is the PCI DMA mask. Pass 0 if not restricted.
1703 SIZE is the size of each buffer to allocate. You can pass
1704 k and m suffix for KB and MB. The max number is 16MB.
1705 BUFFERS is the number of buffers to allocate. It must be greater
1706 than 0. The max number is 4.
1710 This will erase the all pre-allocated buffers which are not in
1717 ALSA project homepage
1718 http://www.alsa-project.org
1720 ALSA Bug Tracking System
1721 https://bugtrack.alsa-project.org/bugs/
1724 mailto:alsa-devel@lists.sourceforge.net
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