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.
65 The PCM OSS emulation module.
66 This module takes options which change the mapping of devices.
68 dsp_map - PCM device number maps assigned to the 1st OSS device.
70 adsp_map - PCM device number maps assigned to the 2st OSS device.
73 - Don't block opening busy PCM devices. Default: 1
75 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
76 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
77 to PCM #0 of the card #0.
78 For changing the second or later card, specify the option with
79 commas, such like "dsp_map=0,1".
81 nonblock_open option is used to change the behavior of the PCM
82 regarding opening the device. When this option is non-zero,
83 opening a busy OSS PCM device won't be blocked but return
84 immediately with EAGAIN (just like O_NONBLOCK flag).
89 This module takes options which change the mapping of devices.
90 similar to those of the snd-pcm-oss module.
92 midi_map - MIDI device number maps assigned to the 1st OSS device.
94 amidi_map - MIDI device number maps assigned to the 2st OSS device.
97 Common parameters for top sound card modules
98 --------------------------------------------
100 Each of top level sound card module takes the following options.
102 index - index (slot #) of sound card
103 - Values: 0 through 31 or negative
104 - If nonnegative, assign that index number
105 - if negative, interpret as a bitmask of permissible
106 indices; the first free permitted index is assigned
108 id - card ID (identifier or name)
109 - Can be up to 15 characters long
110 - Default: the card type
111 - A directory by this name is created under /proc/asound/
112 containing information about the card
113 - This ID can be used instead of the index number in
116 - Default: enabled, for PCI and ISA PnP cards
121 Module for AdLib FM cards.
123 port - port # for OPL chip
125 This module supports multiple cards. It does not support autoprobe, so
126 the port must be specified. For actual AdLib FM cards it will be 0x388.
127 Note that this card does not have PCM support and no mixer; only FM
130 Make sure you have "sbiload" from the alsa-tools package available and,
131 after loading the module, find out the assigned ALSA sequencer port
132 number through "sbiload -l". Example output:
134 Port Client name Port name
135 64:0 OPL2 FM synth OPL2 FM Port
137 Load the std.sb and drums.sb patches also supplied by sbiload:
139 sbiload -p 64:0 std.sb drums.sb
141 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
142 instead. To have the card produce sound, use aplaymidi from alsa-utils:
144 aplaymidi -p 64:0 foo.mid
149 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
151 port - port # for AD1816A chip (PnP setup)
152 mpu_port - port # for MPU-401 UART (PnP setup)
153 fm_port - port # for OPL3 (PnP setup)
154 irq - IRQ # for AD1816A chip (PnP setup)
155 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
156 dma1 - first DMA # for AD1816A chip (PnP setup)
157 dma2 - second DMA # for AD1816A chip (PnP setup)
158 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
160 This module supports multiple cards, autoprobe and PnP.
165 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
167 port - port # for AD1848 chip
168 irq - IRQ # for AD1848 chip
169 dma1 - DMA # for AD1848 chip (0,1,3)
171 This module supports multiple cards. It does not support autoprobe
172 thus main port must be specified!!! Other ports are optional.
174 The power-management is supported.
179 Module for Analog Devices AD1889 chips.
181 ac97_quirk - AC'97 workaround for strange hardware
182 See the description of intel8x0 module for details.
184 This module supports multiple cards.
189 Module for ALi M5451 PCI chip.
191 pcm_channels - Number of hardware channels assigned for PCM
192 spdif - Support SPDIF I/O
195 This module supports one chip and autoprobe.
197 The power-management is supported.
202 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
204 port - port # for ALS100 (SB16) chip (PnP setup)
205 irq - IRQ # for ALS100 (SB16) chip (PnP setup)
206 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)
207 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)
208 mpu_port - port # for MPU-401 UART (PnP setup)
209 mpu_irq - IRQ # for MPU-401 (PnP setup)
210 fm_port - port # for OPL3 FM (PnP setup)
212 This module supports multiple cards, autoprobe and PnP.
214 The power-management is supported.
219 Module for Avance Logic ALS300 and ALS300+
221 This module supports multiple cards.
223 The power-management is supported.
228 Module for sound cards based on Avance Logic ALS4000 PCI chip.
230 joystick_port - port # for legacy joystick support.
231 0 = disabled (default), 1 = auto-detect
233 This module supports multiple cards, autoprobe and PnP.
235 The power-management is supported.
240 Module for ATI IXP 150/200/250/400 AC97 controllers.
242 ac97_clock - AC'97 clock (default = 48000)
243 ac97_quirk - AC'97 workaround for strange hardware
244 See "AC97 Quirk Option" section below.
245 ac97_codec - Workaround to specify which AC'97 codec
246 instead of probing. If this works for you
247 file a bug with your `lspci -vn` output.
249 -1 -- Default behavior.
250 0-2 -- Use the specified codec.
251 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
253 This module supports one card and autoprobe.
255 ATI IXP has two different methods to control SPDIF output. One is
256 over AC-link and another is over the "direct" SPDIF output. The
257 implementation depends on the motherboard, and you'll need to
258 choose the correct one via spdif_aclink module option.
260 The power-management is supported.
262 Module snd-atiixp-modem
263 -----------------------
265 Module for ATI IXP 150/200/250 AC97 modem controllers.
267 This module supports one card and autoprobe.
269 Note: The default index value of this module is -2, i.e. the first
272 The power-management is supported.
274 Module snd-au8810, snd-au8820, snd-au8830
275 -----------------------------------------
277 Module for Aureal Vortex, Vortex2 and Advantage device.
279 pcifix - Control PCI workarounds
280 0 = Disable all workarounds
281 1 = Force the PCI latency of the Aureal card to 0xff
282 2 = Force the Extend PCI#2 Internal Master for Efficient
283 Handling of Dummy Requests on the VIA KT133 AGP Bridge
284 3 = Force both settings
285 255 = Autodetect what is required (default)
287 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
288 EQ, mpu401, gameport. A3D and wavetable support are still in development.
289 Development and reverse engineering work is being coordinated at
290 http://savannah.nongnu.org/projects/openvortex/
291 SPDIF output has a copy of the AC97 codec output, unless you use the
292 "spdif" pcm device, which allows raw data passthru.
293 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
296 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
297 control correctly. If you have problems regarding this, try
298 another ALSA compliant mixer (alsamixer works).
303 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
305 port - port # for AZT2320 chip (PnP setup)
306 wss_port - port # for WSS (PnP setup)
307 mpu_port - port # for MPU-401 UART (PnP setup)
308 fm_port - FM port # for AZT2320 chip (PnP setup)
309 irq - IRQ # for AZT2320 (WSS) chip (PnP setup)
310 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
311 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
312 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
314 This module supports multiple cards, PnP and autoprobe.
316 The power-management is supported.
321 Module for sound cards based on Aztech AZF3328 PCI chip.
323 joystick - Enable joystick (default off)
325 This module supports multiple cards.
330 Module for video cards based on Bt87x chips.
332 digital_rate - Override the default digital rate (Hz)
333 load_all - Load the driver even if the card model isn't known
335 This module supports multiple cards.
337 Note: The default index value of this module is -2, i.e. the first
343 Module for Creative Audigy LS and SB Live 24bit
345 This module supports multiple cards.
351 Module for sound cards based on C-Media CMI8330 ISA chips.
353 wssport - port # for CMI8330 chip (WSS)
354 wssirq - IRQ # for CMI8330 chip (WSS)
355 wssdma - first DMA # for CMI8330 chip (WSS)
356 sbport - port # for CMI8330 chip (SB16)
357 sbirq - IRQ # for CMI8330 chip (SB16)
358 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
359 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
361 This module supports multiple cards and autoprobe.
363 The power-management is supported.
368 Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
370 mpu_port - port address of MIDI interface (8338 only):
371 0x300,0x310,0x320,0x330 = legacy port,
372 0 = disable (default)
373 fm_port - port address of OPL-3 FM synthesizer (8x38 only):
375 1 = integrated PCI port (default on 8738),
377 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
379 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
381 This module supports autoprobe and multiple cards.
383 The power-management is supported.
388 Module for sound cards based on CS4231 ISA chips.
390 port - port # for CS4231 chip
391 mpu_port - port # for MPU-401 UART (optional), -1 = disable
392 irq - IRQ # for CS4231 chip
393 mpu_irq - IRQ # for MPU-401 UART
394 dma1 - first DMA # for CS4231 chip
395 dma2 - second DMA # for CS4231 chip
397 This module supports multiple cards. This module does not support autoprobe
398 thus main port must be specified!!! Other ports are optional.
400 The power-management is supported.
405 Module for sound cards based on CS4232/CS4232A ISA chips.
407 port - port # for CS4232 chip (PnP setup - 0x534)
408 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
409 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
410 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
411 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
412 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
413 dma1 - first DMA # for CS4232 chip (0,1,3)
414 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
415 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
417 This module supports multiple cards. This module does not support autoprobe
418 thus main port must be specified!!! Other ports are optional.
420 The power-management is supported.
425 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
426 CS4238B/CS4239 ISA chips.
428 port - port # for CS4236 chip (PnP setup - 0x534)
429 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
430 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
431 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
432 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
433 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
434 dma1 - first DMA # for CS4236 chip (0,1,3)
435 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
436 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
438 This module supports multiple cards. This module does not support autoprobe
439 (if ISA PnP is not used) thus main port and control port must be
440 specified!!! Other ports are optional.
442 The power-management is supported.
447 Module for Cirrus Logic CS4281 soundchip.
449 dual_codec - Secondary codec ID (0 = disable, default)
451 This module supports multiple cards.
453 The power-management is supported.
458 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
459 CS4624/CS4630/CS4280 PCI chips.
461 external_amp - Force to enable external amplifier.
462 thinkpad - Force to enable Thinkpad's CLKRUN control.
463 mmap_valid - Support OSS mmap mode (default = 0).
465 This module supports multiple cards and autoprobe.
466 Usually external amp and CLKRUN controls are detected automatically
467 from PCI sub vendor/device ids. If they don't work, give the options
470 The power-management is supported.
475 Module for Cyrix/NatSemi Geode 5530 chip.
477 Module snd-cs5535audio
478 ----------------------
480 Module for multifunction CS5535 companion PCI device
482 The power-management is supported.
487 Module for Echoaudio Darla20
489 This module supports multiple cards.
490 The driver requires the firmware loader support on kernel.
495 Module for Echoaudio Darla24
497 This module supports multiple cards.
498 The driver requires the firmware loader support on kernel.
503 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
506 port - Port # (PnP setup)
507 mpu_port - Port # for MPU-401 (PnP setup)
508 fm_port - Port # for FM OPL-3 (PnP setup)
509 irq - IRQ # (PnP setup)
510 mpu_irq - IRQ # for MPU-401 (PnP setup)
511 dma8 - DMA # (PnP setup)
513 This module supports multiple cards. This module is enabled only with
516 The power-management is supported.
521 Module for the dummy sound card. This "card" doesn't do any output
522 or input, but you may use this module for any application which
523 requires a sound card (like RealPlayer).
525 The power-management is supported.
530 Module for Echoaudio 3G cards (Gina3G/Layla3G)
532 This module supports multiple cards.
533 The driver requires the firmware loader support on kernel.
538 Module for EMU10K1/EMU10k2 based PCI sound cards.
539 * Sound Blaster Live!
540 * Sound Blaster PCI 512
541 * Emu APS (partially supported)
542 * Sound Blaster Audigy
544 extin - bitmap of available external inputs for FX8010 (see bellow)
545 extout - bitmap of available external outputs for FX8010 (see bellow)
546 seq_ports - allocated sequencer ports (4 by default)
547 max_synth_voices - limit of voices used for wavetable (64 by default)
548 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
549 given in MB unit. Default value is 128.
550 enable_ir - enable IR
552 This module supports multiple cards and autoprobe.
554 Input & Output configurations [extin/extout]
555 * Creative Card wo/Digital out [0x0003/0x1f03]
556 * Creative Card w/Digital out [0x0003/0x1f0f]
557 * Creative Card w/Digital CD in [0x000f/0x1f0f]
558 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
559 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
560 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
561 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
562 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
563 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
564 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
565 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
566 * Creative Card all ins and outs [0x3fff/0x7fff]
568 The power-management is supported.
573 Module for Creative Emu10k1X (SB Live Dell OEM version)
575 This module supports multiple cards.
580 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
581 * SoundBlaster PCI 64
582 * SoundBlaster PCI 128
584 joystick - Enable joystick (default off)
586 This module supports multiple cards and autoprobe.
588 The power-management is supported.
593 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
594 * SoundBlaster PCI 64
595 * SoundBlaster PCI 128
596 * SoundBlaster Vibra PCI
598 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
599 0 = disable (default), 1 = auto-detect
601 This module supports multiple cards and autoprobe.
603 The power-management is supported.
608 Module for sound cards based on ESS ES968 chip (PnP only).
610 port - port # for ES968 (SB8) chip (PnP setup)
611 irq - IRQ # for ES968 (SB8) chip (PnP setup)
612 dma1 - DMA # for ES968 (SB8) chip (PnP setup)
614 This module supports multiple cards, PnP and autoprobe.
616 The power-management is supported.
621 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
623 port - port # for ES-1688 chip (0x220,0x240,0x260)
624 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
625 irq - IRQ # for ES-1688 chip (5,7,9,10)
626 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
627 dma8 - DMA # for ES-1688 chip (0,1,3)
629 This module supports multiple cards and autoprobe (without MPU-401 port).
634 Module for ESS AudioDrive ES-18xx sound cards.
636 port - port # for ES-18xx chip (0x220,0x240,0x260)
637 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
638 fm_port - port # for FM (optional, not used)
639 irq - IRQ # for ES-18xx chip (5,7,9,10)
640 dma1 - first DMA # for ES-18xx chip (0,1,3)
641 dma2 - first DMA # for ES-18xx chip (0,1,3)
642 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
644 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
645 port if native ISA PnP routines are not used).
646 When dma2 is equal with dma1, the driver works as half-duplex.
648 The power-management is supported.
653 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
655 This module supports multiple cards and autoprobe.
657 The power-management is supported.
662 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
664 total_bufsize - total buffer size in kB (1-4096kB)
665 pcm_substreams_p - playback channels (1-8, default=2)
666 pcm_substreams_c - capture channels (1-8, default=0)
667 clock - clock (0 = auto-detection)
668 use_pm - support the power-management (0 = off, 1 = on,
670 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
671 joystick - enable joystick (default off)
673 This module supports multiple cards and autoprobe.
675 The power-management is supported.
680 Module for ForteMedia FM801 based PCI sound cards.
682 tea575x_tuner - Enable TEA575x tuner
683 - 1 = MediaForte 256-PCS
684 - 2 = MediaForte 256-PCPR
685 - 3 = MediaForte 64-PCR
686 - High 16-bits are video (radio) device number + 1
687 - example: 0x10002 (MediaForte 256-PCPR, device 1)
689 This module supports multiple cards and autoprobe.
691 The power-management is supported.
696 Module for Echoaudio Gina20
698 This module supports multiple cards.
699 The driver requires the firmware loader support on kernel.
704 Module for Echoaudio Gina24
706 This module supports multiple cards.
707 The driver requires the firmware loader support on kernel.
709 Module snd-gusclassic
710 ---------------------
712 Module for Gravis UltraSound Classic sound card.
714 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
715 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
716 dma1 - DMA # for GF1 chip (1,3,5,6,7)
717 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
718 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
719 voices - GF1 voices limit (14-32)
720 pcm_voices - reserved PCM voices
722 This module supports multiple cards and autoprobe.
724 Module snd-gusextreme
725 ---------------------
727 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
729 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
730 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
731 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
732 irq - IRQ # for ES-1688 chip (5,7,9,10)
733 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
734 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
735 dma8 - DMA # for ES-1688 chip (0,1,3)
736 dma1 - DMA # for GF1 chip (1,3,5,6,7)
737 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
738 voices - GF1 voices limit (14-32)
739 pcm_voices - reserved PCM voices
741 This module supports multiple cards and autoprobe (without MPU-401 port).
746 Module for Gravis UltraSound MAX sound card.
748 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
749 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
750 dma1 - DMA # for GF1 chip (1,3,5,6,7)
751 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
752 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
753 voices - GF1 voices limit (14-32)
754 pcm_voices - reserved PCM voices
756 This module supports multiple cards and autoprobe.
761 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),
762 ATI SB450, SB600, RS600,
766 model - force the model name
767 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
768 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
769 single_cmd - Use single immediate commands to communicate with
770 codecs (for debugging only)
771 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
772 power_save - Automatic power-saving timtout (in second, 0 =
774 power_save_controller - Reset HD-audio controller in power-saving mode
777 This module supports one card and autoprobe.
779 Each codec may have a model table for different configurations.
780 If your machine isn't listed there, the default (usually minimal)
781 configuration is set up. You can pass "model=<name>" option to
782 specify a certain model in such a case. There are different
783 models depending on the codec chip.
785 Model name Description
786 ---------- -----------
788 3stack 3-jack in back and a headphone out
789 3stack-digout 3-jack in back, a HP out and a SPDIF out
790 5stack 5-jack in back, 2-jack in front
791 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
792 6stack 6-jack in back, 2-jack in front
793 6stack-digout 6-jack with a SPDIF out
795 z71v 3-jack (HP shared SPDIF)
796 asus 3-jack (ASUS Mobo)
798 asus-dig ASUS with SPDIF out
799 asus-dig2 ASUS with SPDIF out (using GPIO2)
801 fujitsu Fujitsu Laptops (Pi1536)
803 lg LG laptop (m1 express dual)
804 lg-lw LG LW20/LW25 laptop
806 clevo Clevo laptops (m520G, m665n)
807 test for testing/debugging purpose, almost all controls can be
808 adjusted. Appearing only when compiled with
810 auto auto-config reading BIOS (default)
814 hp-3013 HP machines (3013-variant)
815 fujitsu Fujitsu S7020
817 will Will laptops (PB V7900)
818 replacer Replacer 672V
819 basic fixed pin assignment (old default model)
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
828 hippo Hippo (ATI) with jack detection, Sony UX-90s
829 hippo_1 Hippo (Benq) with jack detection
830 sony-assamd Sony ASSAMD
831 basic fixed pin assignment w/o SPDIF
832 auto auto-config reading BIOS (default)
838 auto auto-config reading BIOS (default)
841 3stack-dig 3-stack (2-channel) with SPDIF
842 3stack-6ch 3-stack (6-channel)
843 3stack-6ch-dig 3-stack (6-channel) with SPDIF
844 6stack-dig 6-stack with SPDIF
845 lenovo-101e Lenovo laptop
846 eeepc-p701 ASUS Eeepc
847 auto auto-config reading BIOS (default)
850 3stack-dig 3-jack with SPDIF I/O
851 6stack-dig 6-jack digital with SPDIF I/O
853 targa Targa T8, MSI-1049 T8
856 macpro MacPro support
857 mbp3 Macbook Pro rev3
858 imac24 iMac 24'' with jack detection
860 auto auto-config reading BIOS (default)
863 3stack-dig 3-jack with SPDIF I/O
864 6stack-dig 6-jack digital with SPDIF I/O
865 3stack-6ch 3-jack 6-channel
866 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
867 6stack-dig-demo 6-jack digital for Intel demo board
868 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
869 acer-aspire Acer Aspire 9810
870 medion Medion Laptops
871 medion-md2 Medion MD2
873 targa-2ch-dig Targs/MSI with 2-channel
874 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
875 lenovo-101e Lenovo 101E
876 lenovo-nb0763 Lenovo NB0763
877 lenovo-ms7195-dig Lenovo MS7195
879 6stack-hp HP machines with 6stack (Nettle boards)
880 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
881 auto auto-config reading BIOS (default)
885 3stack-dig 3-jack with SPDIF I/O
886 6stack-dig 6-jack with SPDIF I/O
887 3stack-660 3-jack (for ALC660)
888 uniwill-m31 Uniwill M31 laptop
889 toshiba Toshiba laptop support
890 asus Asus laptop support
891 asus-laptop ASUS F2/F3 laptops
892 auto auto-config reading BIOS (default)
896 3stack-dig 3-jack with SPDIF OUT
897 6stack-dig 6-jack with SPDIF OUT
898 3stack-660 3-jack (for ALC660VD)
899 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
900 lenovo Lenovo 3000 C200
901 dallas Dallas laptops
903 auto auto-config reading BIOS (default)
906 minimal 3-jack in back
907 min_fp 3-jack in back, 2-jack in front
908 full 6-jack in back, 2-jack in front
909 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
910 allout 5-jack in back, 2-jack in front, SPDIF out
911 auto auto-config reading BIOS (default)
914 3stack 3-stack mode (default)
921 basic 3-jack (default)
923 thinkpad Lenovo Thinkpad T60/X60/Z60
930 basic default configuration
931 thinkpad Lenovo Thinkpad T61/X61
934 6stack 6-jack, separate surrounds (default)
935 3stack 3-stack, shared surrounds
936 laptop 2-channel only (FSC V2060, Samsung M50)
937 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
938 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
939 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
943 6stack-dig ditto with SPDIF
945 3stack-dig ditto with SPDIF
946 laptop 3-jack with hp-jack automute
947 laptop-dig ditto with SPDIF
948 auto auto-config reading BIOS (default)
952 test for testing/debugging purpose, almost all controls
953 can be adjusted. Appearing only when compiled with
957 laptop Basic Laptop config
958 laptop-hp Laptop config for some HP models (subdevice 30A5)
959 laptop-eapd Laptop config with EAPD support
960 test for testing/debugging purpose, almost all controls
961 can be adjusted. Appearing only when compiled with
966 dell-d21 Dell (unknown)
967 dell-d22 Dell (unknown)
968 dell-d23 Dell (unknown)
969 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
970 dell-m22 Dell Latitude D620, Dell Latitude D820
971 dell-m23 Dell XPS M1710, Dell Precision M90
972 dell-m24 Dell Latitude 120L
973 dell-m25 Dell Inspiron E1505n
974 dell-m26 Dell Inspiron 1501
975 dell-m27 Dell Inspiron E1705/9400
976 gateway Gateway laptops with EAPD control
980 dell-m42 Dell (unknown)
981 dell-m43 Dell Precision
982 dell-m44 Dell Inspiron
987 5stack D945 5stack + SPDIF
988 intel-mac-v1 Intel Mac Type 1
989 intel-mac-v2 Intel Mac Type 2
990 intel-mac-v3 Intel Mac Type 3
991 intel-mac-v4 Intel Mac Type 4
992 intel-mac-v5 Intel Mac Type 5
993 macmini Intel Mac Mini (equivalent with type 3)
994 macbook Intel Mac Book (eq. type 5)
995 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
996 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
997 imac-intel Intel iMac (eq. type 2)
998 imac-intel-20 Intel iMac (newer version) (eq. type 3)
999 dell-d81 Dell (unknown)
1000 dell-d82 Dell (unknown)
1001 dell-m81 Dell (unknown)
1002 dell-m82 Dell XPS M1210
1005 ref Reference board, base config
1006 m2-2 Some Gateway MX series laptops
1007 m6 Some Gateway NX series laptops
1008 pa6 Gateway NX860 series
1010 STAC9227/9228/9229/927x
1013 5stack D965 5stack + SPDIF
1014 dell-3stack Dell Dimension E520
1017 vaio Setup for VAIO FE550G/SZ110
1018 vaio-ar Setup for VAIO AR
1020 The model name "genric" is treated as a special case. When this
1021 model is given, the driver uses the generic codec parser without
1022 "codec-patch". It's sometimes good for testing and debugging.
1024 If the default configuration doesn't work and one of the above
1025 matches with your device, report it together with the PCI
1026 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1027 ML (see the section "Links and Addresses").
1029 power_save and power_save_controller options are for power-saving
1030 mode. See powersave.txt for details.
1032 Note 2: If you get click noises on output, try the module option
1033 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1034 register value without FIFO size correction as the current
1035 DMA pointer. position_fix=2 will make the driver to use
1036 the position buffer instead of reading SD_LPIB register.
1037 (Usually SD_LPLIB register is more accurate than the
1040 NB: If you get many "azx_get_response timeout" messages at
1041 loading, it's likely a problem of interrupts (e.g. ACPI irq
1042 routing). Try to boot with options like "pci=noacpi". Also, you
1043 can try "single_cmd=1" module option. This will switch the
1044 communication method between HDA controller and codecs to the
1045 single immediate commands instead of CORB/RIRB. Basically, the
1046 single command mode is provided only for BIOS, and you won't get
1047 unsolicited events, too. But, at least, this works independently
1048 from the irq. Remember this is a last resort, and should be
1049 avoided as much as possible...
1051 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1052 On some hardwares, you may need to add a proper probe_mask option
1053 to avoid the "azx_get_response timeout" problem above, instead.
1054 This occurs when the access to non-existing or non-working codec slot
1055 (likely a modem one) causes a stall of the communication via HD-audio
1056 bus. You can see which codec slots are probed by enabling
1057 CONFIG_SND_DEBUG_DETECT, or simply from the file name of the codec
1058 proc files. Then limit the slots to probe by probe_mask option.
1059 For example, probe_mask=1 means to probe only the first slot, and
1060 probe_mask=4 means only the third slot.
1062 The power-management is supported.
1067 Module for RME Hammerfall DSP audio interface(s)
1069 This module supports multiple cards.
1071 Note: The firmware data can be automatically loaded via hotplug
1072 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1073 the firmware via hdsploader utility included in alsa-tools
1075 The firmware data is found in alsa-firmware package.
1077 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1078 module did formerly. It will allocate the buffers in advance
1079 when any HDSP cards are found. To make the buffer
1080 allocation sure, load snd-page-alloc module in the early
1081 stage of boot sequence. See "Early Buffer Allocation"
1087 Module for RME HDSP MADI board.
1089 precise_ptr - Enable precise pointer, or disable.
1090 line_outs_monitor - Send playback streams to analog outs by default.
1091 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1093 See hdspm.txt for details.
1098 Module for Envy24 (ICE1712) based PCI sound cards.
1099 * MidiMan M Audio Delta 1010
1100 * MidiMan M Audio Delta 1010LT
1101 * MidiMan M Audio Delta DiO 2496
1102 * MidiMan M Audio Delta 66
1103 * MidiMan M Audio Delta 44
1104 * MidiMan M Audio Delta 410
1105 * MidiMan M Audio Audiophile 2496
1108 * TerraTec EWX 24/96
1109 * TerraTec DMX 6Fire
1111 * Hoontech SoundTrack DSP 24
1112 * Hoontech SoundTrack DSP 24 Value
1113 * Hoontech SoundTrack DSP 24 Media 7.1
1114 * Event Electronics, EZ8
1116 * Lionstracs, Mediastaton
1118 model - Use the given board model, one of the following:
1119 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1120 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1121 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1122 phase88, mediastation
1123 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1124 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1125 in msec resolution, default value is 500 (0.5 sec)
1127 This module supports multiple cards and autoprobe. Note: The consumer part
1128 is not used with all Envy24 based cards (for example in the MidiMan Delta
1131 Note: The supported board is detected by reading EEPROM or PCI
1132 SSID (if EEPROM isn't available). You can override the
1133 model by passing "model" module option in case that the
1134 driver isn't configured properly or you want to try another
1140 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1141 * MidiMan M Audio Revolution 5.1
1142 * MidiMan M Audio Revolution 7.1
1143 * MidiMan M Audio Audiophile 192
1145 * TerraTec Aureon 5.1 Sky
1146 * TerraTec Aureon 7.1 Space
1147 * TerraTec Aureon 7.1 Universe
1150 * AudioTrak Prodigy 7.1
1151 * AudioTrak Prodigy 7.1LT
1152 * AudioTrak Prodigy 192
1154 * Albatron K8X800 Pro II
1155 * Chaintech ZNF3-150
1156 * Chaintech ZNF3-250
1163 model - Use the given board model, one of the following:
1164 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1165 prodigy192, aureon51, aureon71, universe, ap192,
1166 k8x800, phase22, phase28, ms300, av710, se200pci,
1169 This module supports multiple cards and autoprobe.
1171 Note: The supported board is detected by reading EEPROM or PCI
1172 SSID (if EEPROM isn't available). You can override the
1173 model by passing "model" module option in case that the
1174 driver isn't configured properly or you want to try another
1180 Module for Echoaudio Indigo
1182 This module supports multiple cards.
1183 The driver requires the firmware loader support on kernel.
1188 Module for Echoaudio Indigo DJ
1190 This module supports multiple cards.
1191 The driver requires the firmware loader support on kernel.
1196 Module for Echoaudio Indigo IO
1198 This module supports multiple cards.
1199 The driver requires the firmware loader support on kernel.
1204 Module for AC'97 motherboards from Intel and compatibles.
1205 * Intel i810/810E, i815, i820, i830, i84x, MX440
1206 ICH5, ICH6, ICH7, ESB2
1207 * SiS 7012 (SiS 735)
1208 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1210 * AMD AMD768, AMD8111
1213 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1214 ac97_quirk - AC'97 workaround for strange hardware
1215 See "AC97 Quirk Option" section below.
1216 buggy_irq - Enable workaround for buggy interrupts on some
1217 motherboards (default yes on nForce chips,
1219 buggy_semaphore - Enable workaround for hardwares with buggy
1220 semaphores (e.g. on some ASUS laptops)
1222 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1223 from the controller chip
1224 (0 = off, 1 = on, -1 = default)
1226 This module supports one chip and autoprobe.
1228 Note: the latest driver supports auto-detection of chip clock.
1229 if you still encounter too fast playback, specify the clock
1230 explicitly via the module option "ac97_clock=41194".
1232 Joystick/MIDI ports are not supported by this driver. If your
1233 motherboard has these devices, use the ns558 or snd-mpu401
1234 modules, respectively.
1236 The power-management is supported.
1238 Module snd-intel8x0m
1239 --------------------
1241 Module for Intel ICH (i8x0) chipset MC97 modems.
1242 * Intel i810/810E, i815, i820, i830, i84x, MX440
1244 * SiS 7013 (SiS 735)
1245 * NVidia NForce, NForce2, NForce2s, NForce3
1249 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1251 This module supports one card and autoprobe.
1253 Note: The default index value of this module is -2, i.e. the first
1256 The power-management is supported.
1258 Module snd-interwave
1259 --------------------
1261 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1262 and other sound cards based on AMD InterWave (tm) chip.
1264 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1265 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1266 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1267 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1268 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1269 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1270 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1271 effect - 1 = InterWave effects enable (default 0);
1274 This module supports multiple cards, autoprobe and ISA PnP.
1276 Module snd-interwave-stb
1277 ------------------------
1279 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1280 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1281 circuit for extended control of bass, treble and master volume.
1283 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1284 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1285 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1286 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1287 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1288 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1289 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1290 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1291 effect - 1 = InterWave effects enable (default 0);
1294 This module supports multiple cards, autoprobe and ISA PnP.
1299 Module for Korg 1212 IO PCI card
1301 This module supports multiple cards.
1306 Module for Echoaudio Layla20
1308 This module supports multiple cards.
1309 The driver requires the firmware loader support on kernel.
1314 Module for Echoaudio Layla24
1316 This module supports multiple cards.
1317 The driver requires the firmware loader support on kernel.
1322 Module for Allegro/Maestro3 chips
1324 external_amp - enable external amp (enabled by default)
1325 amp_gpio - GPIO pin number for external amp (0-15) or
1326 -1 for default pin (8 for allegro, 1 for
1329 This module supports autoprobe and multiple chips.
1331 Note: the binding of amplifier is dependent on hardware.
1332 If there is no sound even though all channels are unmuted, try to
1333 specify other gpio connection via amp_gpio option.
1334 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1337 The power-management is supported.
1342 Module for Echoaudio Mia
1344 This module supports multiple cards.
1345 The driver requires the firmware loader support on kernel.
1350 Module for Miro soundcards: miroSOUND PCM 1 pro,
1352 miroSOUND PCM 20 Radio.
1354 port - Port # (0x530,0x604,0xe80,0xf40)
1355 irq - IRQ # (5,7,9,10,11)
1356 dma1 - 1st dma # (0,1,3)
1357 dma2 - 2nd dma # (0,1)
1358 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1359 mpu_irq - MPU-401 irq # (5,7,9,10)
1360 fm_port - FM Port # (0x388)
1361 wss - enable WSS mode
1362 ide - enable onboard ide support
1367 Module for Digigram miXart8 sound cards.
1369 This module supports multiple cards.
1370 Note: One miXart8 board will be represented as 4 alsa cards.
1371 See MIXART.txt for details.
1373 When the driver is compiled as a module and the hotplug firmware
1374 is supported, the firmware data is loaded via hotplug automatically.
1375 Install the necessary firmware files in alsa-firmware package.
1376 When no hotplug fw loader is available, you need to load the
1377 firmware via mixartloader utility in alsa-tools package.
1382 Module for Echoaudio Mona
1384 This module supports multiple cards.
1385 The driver requires the firmware loader support on kernel.
1390 Module for MPU-401 UART devices.
1392 port - port number or -1 (disable)
1393 irq - IRQ number or -1 (disable)
1394 pnp - PnP detection - 0 = disable, 1 = enable (default)
1396 This module supports multiple devices and PnP.
1401 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1404 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1405 irq - IRQ # for MTPAV (7,5, default=7)
1406 hwports - number of supported hardware ports, default=8.
1408 Module supports only 1 card. This module has no enable option.
1413 Module for Ego Systems (ESI) Miditerminal 4140
1415 This module supports multiple devices.
1416 Requires parport (CONFIG_PARPORT).
1421 Module for NeoMagic NM256AV/ZX chips
1423 playback_bufsize - max playback frame size in kB (4-128kB)
1424 capture_bufsize - max capture frame size in kB (4-128kB)
1425 force_ac97 - 0 or 1 (disabled by default)
1426 buffer_top - specify buffer top address
1427 use_cache - 0 or 1 (disabled by default)
1428 vaio_hack - alias buffer_top=0x25a800
1429 reset_workaround - enable AC97 RESET workaround for some laptops
1430 reset_workaround2 - enable extended AC97 RESET workaround for some
1433 This module supports one chip and autoprobe.
1435 The power-management is supported.
1437 Note: on some notebooks the buffer address cannot be detected
1438 automatically, or causes hang-up during initialization.
1439 In such a case, specify the buffer top address explicitly via
1440 the buffer_top option.
1442 Sony F250: buffer_top=0x25a800
1443 Sony F270: buffer_top=0x272800
1444 The driver supports only ac97 codec. It's possible to force
1445 to initialize/use ac97 although it's not detected. In such a
1446 case, use force_ac97=1 option - but *NO* guarantee whether it
1449 Note: The NM256 chip can be linked internally with non-AC97
1450 codecs. This driver supports only the AC97 codec, and won't work
1451 with machines with other (most likely CS423x or OPL3SAx) chips,
1452 even though the device is detected in lspci. In such a case, try
1453 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1454 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1455 and proper hardware parameters in the case without ISA PnP.
1457 Note: some laptops need a workaround for AC97 RESET. For the
1458 known hardware like Dell Latitude LS and Sony PCG-F305, this
1459 workaround is enabled automatically. For other laptops with a
1460 hard freeze, you can try reset_workaround=1 option.
1462 Note: Dell Latitude CSx laptops have another problem regarding
1463 AC97 RESET. On these laptops, reset_workaround2 option is
1464 turned on as default. This option is worth to try if the
1465 previous reset_workaround option doesn't help.
1467 Note: This driver is really crappy. It's a porting from the
1468 OSS driver, which is a result of black-magic reverse engineering.
1469 The detection of codec will fail if the driver is loaded *after*
1470 X-server as described above. You might be able to force to load
1471 the module, but it may result in hang-up. Hence, make sure that
1472 you load this module *before* X if you encounter this kind of
1478 Module for Yamaha OPL3-SA2/SA3 sound cards.
1480 port - control port # for OPL3-SA chip (0x370)
1481 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1482 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1483 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1484 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1485 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1486 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1487 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1488 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1490 This module supports multiple cards and ISA PnP. It does not support
1491 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1493 The power-management is supported.
1495 Module snd-opti92x-ad1848
1496 -------------------------
1498 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1499 Module works with OAK Mozart cards as well.
1501 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1502 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1503 fm_port - port # for OPL3 device (0x388)
1504 irq - IRQ # for WSS chip (5,7,9,10,11)
1505 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1506 dma1 - first DMA # for WSS chip (0,1,3)
1508 This module supports only one card, autoprobe and PnP.
1510 Module snd-opti92x-cs4231
1511 -------------------------
1513 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1515 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1516 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1517 fm_port - port # for OPL3 device (0x388)
1518 irq - IRQ # for WSS chip (5,7,9,10,11)
1519 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1520 dma1 - first DMA # for WSS chip (0,1,3)
1521 dma2 - second DMA # for WSS chip (0,1,3)
1523 This module supports only one card, autoprobe and PnP.
1528 Module for sound cards based on OPTi 82c93x chips.
1530 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1531 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1532 fm_port - port # for OPL3 device (0x388)
1533 irq - IRQ # for WSS chip (5,7,9,10,11)
1534 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1535 dma1 - first DMA # for WSS chip (0,1,3)
1536 dma2 - second DMA # for WSS chip (0,1,3)
1538 This module supports only one card, autoprobe and PnP.
1543 Module for Digigram PCXHR boards
1545 This module supports multiple cards.
1547 Module snd-portman2x4
1548 ---------------------
1550 Module for Midiman Portman 2x4 parallel port MIDI interface
1552 This module supports multiple cards.
1554 Module snd-powermac (on ppc only)
1555 ---------------------------------
1557 Module for PowerMac, iMac and iBook on-board soundchips
1559 enable_beep - enable beep using PCM (enabled as default)
1561 Module supports autoprobe a chip.
1563 Note: the driver may have problems regarding endianess.
1565 The power-management is supported.
1567 Module snd-pxa2xx-ac97 (on arm only)
1568 ------------------------------------
1570 Module for AC97 driver for the Intel PXA2xx chip
1572 For ARM architecture only.
1574 The power-management is supported.
1579 Module for Conexant Riptide chip
1581 joystick_port - Joystick port # (default: 0x200)
1582 mpu_port - MPU401 port # (default: 0x330)
1583 opl3_port - OPL3 port # (default: 0x388)
1585 This module supports multiple cards.
1586 The driver requires the firmware loader support on kernel.
1587 You need to install the firmware file "riptide.hex" to the standard
1588 firmware path (e.g. /lib/firmware).
1593 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1594 Prodif96 and Prodif Gold) sound cards.
1596 This module supports multiple cards.
1601 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1603 This module supports multiple cards.
1608 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1610 precise_ptr - Enable precise pointer (doesn't work reliably).
1613 This module supports multiple cards.
1615 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1616 module did formerly. It will allocate the buffers in advance
1617 when any RME9652 cards are found. To make the buffer
1618 allocation sure, load snd-page-alloc module in the early
1619 stage of boot sequence. See "Early Buffer Allocation"
1622 Module snd-sa11xx-uda1341 (on arm only)
1623 ---------------------------------------
1625 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1627 Module supports only one card.
1628 Module has no enable and index options.
1630 The power-management is supported.
1635 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1639 port - port # for SB DSP chip (0x220,0x240,0x260)
1640 irq - IRQ # for SB DSP chip (5,7,9,10)
1641 dma8 - DMA # for SB DSP chip (1,3)
1643 This module supports multiple cards and autoprobe.
1645 The power-management is supported.
1647 Module snd-sb16 and snd-sbawe
1648 -----------------------------
1650 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1651 SoundBlaster AWE 32 (PnP),
1652 SoundBlaster AWE 64 PnP
1654 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1655 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1656 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1657 (snd-sbawe module only)
1658 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1659 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1660 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1661 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1662 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1663 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1665 This module supports multiple cards, autoprobe and ISA PnP.
1667 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1668 disable 16bit DMA with dma16 = -1 module parameter.
1669 Also, all Sound Blaster 16 type cards can operate in 16-bit
1670 half duplex mode through 8-bit DMA channel by disabling their
1673 The power-management is supported.
1678 Module for Gallant SC-6000 soundcard.
1680 port - Port # (0x220 or 0x240)
1681 mss_port - MSS Port # (0x530 or 0xe80)
1682 irq - IRQ # (5,7,9,10,11)
1683 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1686 This module supports multiple cards.
1688 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1693 Module for Aztech Sound Galaxy sound card.
1695 sbport - Port # for SB16 interface (0x220,0x240)
1696 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1697 irq - IRQ # (7,9,10,11)
1700 This module supports multiple cards.
1702 The power-management is supported.
1707 Module for ENSONIQ SoundScape PnP cards.
1709 port - Port # (PnP setup)
1710 wss_port - WSS Port # (PnP setup)
1711 irq - IRQ # (PnP setup)
1712 mpu_irq - MPU-401 IRQ # (PnP setup)
1713 dma - DMA # (PnP setup)
1714 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1716 This module supports multiple cards. ISA PnP must be enabled.
1717 You need sscape_ctl tool in alsa-tools package for loading
1720 Module snd-sun-amd7930 (on sparc only)
1721 --------------------------------------
1723 Module for AMD7930 sound chips found on Sparcs.
1725 This module supports multiple cards.
1727 Module snd-sun-cs4231 (on sparc only)
1728 -------------------------------------
1730 Module for CS4231 sound chips found on Sparcs.
1732 This module supports multiple cards.
1734 Module snd-sun-dbri (on sparc only)
1735 -----------------------------------
1737 Module for DBRI sound chips found on Sparcs.
1739 This module supports multiple cards.
1741 Module snd-wavefront
1742 --------------------
1744 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1746 cs4232_pcm_port - Port # for CS4232 PCM interface.
1747 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1748 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1749 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1750 use_cs4232_midi - Use CS4232 MPU-401 interface
1751 (inaccessibly located inside your computer)
1752 ics2115_port - Port # for ICS2115
1753 ics2115_irq - IRQ # for ICS2115
1754 fm_port - FM OPL-3 Port #
1755 dma1 - DMA1 # for CS4232 PCM interface.
1756 dma2 - DMA2 # for CS4232 PCM interface.
1757 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1759 The below are options for wavefront_synth features:
1760 wf_raw - Assume that we need to boot the OS (default:no)
1761 If yes, then during driver loading, the state of the board is
1762 ignored, and we reset the board and load the firmware anyway.
1763 fx_raw - Assume that the FX process needs help (default:yes)
1764 If false, we'll leave the FX processor in whatever state it is
1765 when the driver is loaded. The default is to download the
1766 microprogram and associated coefficients to set it up for
1767 "default" operation, whatever that means.
1768 debug_default - Debug parameters for card initialization
1769 wait_usecs - How long to wait without sleeping, usecs
1771 This magic number seems to give pretty optimal throughput
1772 based on my limited experimentation.
1773 If you want to play around with it and find a better value, be
1774 my guest. Remember, the idea is to get a number that causes us
1775 to just busy wait for as many WaveFront commands as possible,
1776 without coming up with a number so large that we hog the whole
1778 Specifically, with this number, out of about 134,000 status
1779 waits, only about 250 result in a sleep.
1780 sleep_interval - How long to sleep when waiting for reply
1782 sleep_tries - How many times to try sleeping during a wait
1784 ospath - Pathname to processed ICS2115 OS firmware
1785 (default:wavefront.os)
1786 The path name of the ISC2115 OS firmware. In the recent
1787 version, it's handled via firmware loader framework, so it
1788 must be installed in the proper path, typically,
1790 reset_time - How long to wait for a reset to take effect
1792 ramcheck_time - How many seconds to wait for the RAM test
1794 osrun_time - How many seconds to wait for the ICS2115 OS
1797 This module supports multiple cards and ISA PnP.
1799 Note: the firmware file "wavefront.os" was located in the earlier
1800 version in /etc. Now it's loaded via firmware loader, and
1801 must be in the proper firmware path, such as /lib/firmware.
1802 Copy (or symlink) the file appropriately if you get an error
1803 regarding firmware downloading after upgrading the kernel.
1805 Module snd-sonicvibes
1806 ---------------------
1808 Module for S3 SonicVibes PCI sound cards.
1809 * PINE Schubert 32 PCI
1811 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1812 - SoundCard must have onboard SRAM for this.
1813 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1815 This module supports multiple cards and autoprobe.
1817 Module snd-serial-u16550
1818 ------------------------
1820 Module for UART16550A serial MIDI ports.
1822 port - port # for UART16550A chip
1823 irq - IRQ # for UART16550A chip, -1 = poll mode
1824 speed - speed in bauds (9600,19200,38400,57600,115200)
1826 base - base for divisor in bauds (57600,115200,230400,460800)
1828 outs - number of MIDI ports in a serial port (1-4)
1830 adaptor - Type of adaptor.
1831 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1832 3 = MS-124W M/B, 4 = Generic
1834 This module supports multiple cards. This module does not support autoprobe
1835 thus the main port must be specified!!! Other options are optional.
1840 Module for Trident 4DWave DX/NX sound cards.
1841 * Best Union Miss Melody 4DWave PCI
1843 * Warpspeed ONSpeed 4DWave PCI
1846 * CHIC True Sound 4Dwave
1847 * Shark Predator4D-PCI
1848 * Jaton SonicWave 4D
1850 pcm_channels - max channels (voices) reserved for PCM
1851 wavetable_size - max wavetable size in kB (4-?kb)
1853 This module supports multiple cards and autoprobe.
1855 The power-management is supported.
1857 Module snd-usb-audio
1858 --------------------
1860 Module for USB audio and USB MIDI devices.
1862 vid - Vendor ID for the device (optional)
1863 pid - Product ID for the device (optional)
1864 device_setup - Device specific magic number (optional)
1865 - Influence depends on the device
1868 This module supports multiple devices, autoprobe and hotplugging.
1870 Module snd-usb-caiaq
1871 --------------------
1873 Module for caiaq UB audio interfaces,
1874 * Native Instruments RigKontrol2
1875 * Native Instruments Kore Controller
1876 * Native Instruments Audio Kontrol 1
1877 * Native Instruments Audio 8 DJ
1879 This module supports multiple devices, autoprobe and hotplugging.
1881 Module snd-usb-usx2y
1882 --------------------
1884 Module for Tascam USB US-122, US-224 and US-428 devices.
1886 This module supports multiple devices, autoprobe and hotplugging.
1888 Note: you need to load the firmware via usx2yloader utility included
1889 in alsa-tools and alsa-firmware packages.
1894 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1895 8233A, 8233C, 8235, 8237 (south) bridge.
1897 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1899 joystick - Enable joystick (default off) [VIA686A/686B only]
1900 ac97_clock - AC'97 codec clock base (default 48000Hz)
1901 dxs_support - support DXS channels,
1902 0 = auto (default), 1 = enable, 2 = disable,
1903 3 = 48k only, 4 = no VRA, 5 = enable any sample
1904 rate and different sample rates on different
1906 [VIA8233/C, 8235, 8237 only]
1907 ac97_quirk - AC'97 workaround for strange hardware
1908 See "AC97 Quirk Option" section below.
1910 This module supports one chip and autoprobe.
1912 Note: on some SMP motherboards like MSI 694D the interrupts might
1913 not be generated properly. In such a case, please try to
1914 set the SMP (or MPS) version on BIOS to 1.1 instead of
1915 default value 1.4. Then the interrupt number will be
1916 assigned under 15. You might also upgrade your BIOS.
1918 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1919 channels as the first PCM. On these channels, up to 4
1920 streams can be played at the same time, and the controller
1921 can perform sample rate conversion with separate rates for
1923 As default (dxs_support = 0), 48k fixed rate is chosen
1924 except for the known devices since the output is often
1925 noisy except for 48k on some mother boards due to the
1927 Please try once dxs_support=5 and if it works on other
1928 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1929 know the PCI subsystem vendor/device id's (output of
1931 If dxs_support=5 does not work, try dxs_support=4; if it
1932 doesn't work too, try dxs_support=1. (dxs_support=1 is
1933 usually for old motherboards. The correct implemented
1934 board should work with 4 or 5.) If it still doesn't
1935 work and the default setting is ok, dxs_support=3 is the
1936 right choice. If the default setting doesn't work at all,
1937 try dxs_support=2 to disable the DXS channels.
1938 In any cases, please let us know the result and the
1939 subsystem vendor/device ids. See "Links and Addresses"
1942 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1943 additionally. The mpu_port option is for VIA686 chips only.
1945 The power-management is supported.
1947 Module snd-via82xx-modem
1948 ------------------------
1950 Module for VIA82xx AC97 modem
1952 ac97_clock - AC'97 codec clock base (default 48000Hz)
1954 This module supports one card and autoprobe.
1956 Note: The default index value of this module is -2, i.e. the first
1959 The power-management is supported.
1964 Module for virtual rawmidi devices.
1965 This module creates virtual rawmidi devices which communicate
1966 to the corresponding ALSA sequencer ports.
1968 midi_devs - MIDI devices # (1-4, default=4)
1970 This module supports multiple cards.
1975 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1977 mic - Enable Microphone on V222 Mic (NYI)
1978 ibl - Capture IBL size. (default = 0, minimum size)
1980 This module supports multiple cards.
1982 When the driver is compiled as a module and the hotplug firmware
1983 is supported, the firmware data is loaded via hotplug automatically.
1984 Install the necessary firmware files in alsa-firmware package.
1985 When no hotplug fw loader is available, you need to load the
1986 firmware via vxloader utility in alsa-tools package. To invoke
1987 vxloader automatically, add the following to /etc/modprobe.conf
1989 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1991 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1992 /etc/modules.conf, instead.)
1993 IBL size defines the interrupts period for PCM. The smaller size
1994 gives smaller latency but leads to more CPU consumption, too.
1995 The size is usually aligned to 126. As default (=0), the smallest
1996 size is chosen. The possible IBL values can be found in
1997 /proc/asound/cardX/vx-status proc file.
1999 The power-management is supported.
2004 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2006 ibl - Capture IBL size. (default = 0, minimum size)
2008 This module supports multiple cards. The module is compiled only when
2009 PCMCIA is supported on kernel.
2011 With the older 2.6.x kernel, to activate the driver via the card
2012 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2013 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2014 longer require a config file.
2016 When the driver is compiled as a module and the hotplug firmware
2017 is supported, the firmware data is loaded via hotplug automatically.
2018 Install the necessary firmware files in alsa-firmware package.
2019 When no hotplug fw loader is available, you need to load the
2020 firmware via vxloader utility in alsa-tools package.
2022 About capture IBL, see the description of snd-vx222 module.
2024 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2027 The power-management is supported.
2032 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2034 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2035 1 (auto-detect for YMF744/754 only)
2036 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2037 1 (auto-detect for YMF744/754 only)
2038 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2040 rear_switch - enable shared rear/line-in switch (bool)
2042 This module supports autoprobe and multiple chips.
2044 The power-management is supported.
2046 Module snd-pdaudiocf
2047 --------------------
2049 Module for Sound Core PDAudioCF sound card.
2051 The power-management is supported.
2057 The ac97_quirk option is used to enable/override the workaround for
2058 specific devices on drivers for on-board AC'97 controllers like
2059 snd-intel8x0. Some hardware have swapped output pins between Master
2060 and Headphone, or Surround (thanks to confusion of AC'97
2061 specifications from version to version :-)
2063 The driver provides the auto-detection of known problematic devices,
2064 but some might be unknown or wrongly detected. In such a case, pass
2065 the proper value with this option.
2067 The following strings are accepted:
2068 - default Don't override the default setting
2069 - none Disable the quirk
2070 - hp_only Bind Master and Headphone controls as a single control
2071 - swap_hp Swap headphone and master controls
2072 - swap_surround Swap master and surround controls
2073 - ad_sharing For AD1985, turn on OMS bit and use headphone
2074 - alc_jack For ALC65x, turn on the jack sense mode
2075 - inv_eapd Inverted EAPD implementation
2076 - mute_led Bind EAPD bit for turning on/off mute LED
2078 For backward compatibility, the corresponding integer value -1, 0,
2079 ... are accepted, too.
2081 For example, if "Master" volume control has no effect on your device
2082 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2085 Configuring Non-ISAPNP Cards
2086 ============================
2088 When the kernel is configured with ISA-PnP support, the modules
2089 supporting the isapnp cards will have module options "isapnp".
2090 If this option is set, *only* the ISA-PnP devices will be probed.
2091 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2092 together with the proper i/o and irq configuration.
2094 When the kernel is configured without ISA-PnP support, isapnp option
2095 will be not built in.
2098 Module Autoloading Support
2099 ==========================
2101 The ALSA drivers can be loaded automatically on demand by defining
2102 module aliases. The string 'snd-card-%1' is requested for ALSA native
2103 devices where %i is sound card number from zero to seven.
2105 To auto-load an ALSA driver for OSS services, define the string
2106 'sound-slot-%i' where %i means the slot number for OSS, which
2107 corresponds to the card index of ALSA. Usually, define this
2108 as the same card module.
2110 An example configuration for a single emu10k1 card is like below:
2111 ----- /etc/modprobe.conf
2112 alias snd-card-0 snd-emu10k1
2113 alias sound-slot-0 snd-emu10k1
2114 ----- /etc/modprobe.conf
2116 The available number of auto-loaded sound cards depends on the module
2117 option "cards_limit" of snd module. As default it's set to 1.
2118 To enable the auto-loading of multiple cards, specify the number of
2119 sound cards in that option.
2121 When multiple cards are available, it'd better to specify the index
2122 number for each card via module option, too, so that the order of
2123 cards is kept consistent.
2125 An example configuration for two sound cards is like below:
2127 ----- /etc/modprobe.conf
2129 options snd cards_limit=2
2130 alias snd-card-0 snd-interwave
2131 alias snd-card-1 snd-ens1371
2132 options snd-interwave index=0
2133 options snd-ens1371 index=1
2135 alias sound-slot-0 snd-interwave
2136 alias sound-slot-1 snd-ens1371
2137 ----- /etc/modprobe.conf
2139 In this example, the interwave card is always loaded as the first card
2140 (index 0) and ens1371 as the second (index 1).
2143 ALSA PCM devices to OSS devices mapping
2144 =======================================
2146 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2147 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2148 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2149 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2150 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2151 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2152 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2153 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2154 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2156 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2157 sound card number and second means device number. The ALSA devices
2158 have either 'c' or 'p' suffix indicating the direction, capture and
2159 playback, respectively.
2161 Please note that the device mapping above may be varied via the module
2162 options of snd-pcm-oss module.
2165 Proc interfaces (/proc/asound)
2166 ==============================
2168 /proc/asound/card#/pcm#[cp]/oss
2169 -------------------------------
2170 String "erase" - erase all additional informations about OSS applications
2171 String "<app_name> <fragments> <fragment_size> [<options>]"
2173 <app_name> - name of application with (higher priority) or without path
2174 <fragments> - number of fragments or zero if auto
2175 <fragment_size> - size of fragment in bytes or zero if auto
2176 <options> - optional parameters
2177 - disable the application tries to open a pcm device for
2178 this channel but does not want to use it.
2179 (Cause a bug or mmap needs)
2180 It's good for Quake etc...
2181 - direct don't use plugins
2182 - block force block mode (rvplayer)
2183 - non-block force non-block mode
2184 - whole-frag write only whole fragments (optimization affecting
2186 - no-silence do not fill silence ahead to avoid clicks
2187 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2188 instead of filled blocks
2190 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2191 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2192 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2195 Early Buffer Allocation
2196 =======================
2198 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2199 sometimes it's too late to find such spaces when the driver module is
2200 actually loaded due to memory fragmentation. You can pre-allocate the
2201 PCM buffers by loading snd-page-alloc module and write commands to its
2202 proc file in prior, for example, in the early boot stage like
2203 /etc/init.d/*.local scripts.
2205 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2206 usage of page allocation. In writing, you can send the following
2207 commands to the snd-page-alloc driver:
2209 - add VENDOR DEVICE MASK SIZE BUFFERS
2211 VENDOR and DEVICE are PCI vendor and device IDs. They take
2212 integer numbers (0x prefix is needed for the hex).
2213 MASK is the PCI DMA mask. Pass 0 if not restricted.
2214 SIZE is the size of each buffer to allocate. You can pass
2215 k and m suffix for KB and MB. The max number is 16MB.
2216 BUFFERS is the number of buffers to allocate. It must be greater
2217 than 0. The max number is 4.
2221 This will erase the all pre-allocated buffers which are not in
2228 ALSA project homepage
2229 http://www.alsa-project.org
2231 ALSA Bug Tracking System
2232 https://bugtrack.alsa-project.org/bugs/
2235 mailto:alsa-devel@alsa-project.org
projects / powerpc.git / blob