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 ultra Samsung Q1 Ultra Vista model
832 basic fixed pin assignment w/o SPDIF
833 auto auto-config reading BIOS (default)
839 auto auto-config reading BIOS (default)
842 3stack-dig 3-stack (2-channel) with SPDIF
843 3stack-6ch 3-stack (6-channel)
844 3stack-6ch-dig 3-stack (6-channel) with SPDIF
845 6stack-dig 6-stack with SPDIF
846 lenovo-101e Lenovo laptop
847 eeepc-p701 ASUS Eeepc
848 auto auto-config reading BIOS (default)
851 3stack-dig 3-jack with SPDIF I/O
852 6stack-dig 6-jack digital with SPDIF I/O
854 targa Targa T8, MSI-1049 T8
857 macpro MacPro support
858 mbp3 Macbook Pro rev3
859 imac24 iMac 24'' with jack detection
861 auto auto-config reading BIOS (default)
864 3stack-dig 3-jack with SPDIF I/O
865 6stack-dig 6-jack digital with SPDIF I/O
866 3stack-6ch 3-jack 6-channel
867 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
868 6stack-dig-demo 6-jack digital for Intel demo board
869 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
870 acer-aspire Acer Aspire 9810
871 medion Medion Laptops
872 medion-md2 Medion MD2
874 targa-2ch-dig Targs/MSI with 2-channel
875 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
876 lenovo-101e Lenovo 101E
877 lenovo-nb0763 Lenovo NB0763
878 lenovo-ms7195-dig Lenovo MS7195
880 6stack-hp HP machines with 6stack (Nettle boards)
881 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
882 auto auto-config reading BIOS (default)
886 3stack-dig 3-jack with SPDIF I/O
887 6stack-dig 6-jack with SPDIF I/O
888 3stack-660 3-jack (for ALC660)
889 uniwill-m31 Uniwill M31 laptop
890 toshiba Toshiba laptop support
891 asus Asus laptop support
892 asus-laptop ASUS F2/F3 laptops
893 auto auto-config reading BIOS (default)
897 3stack-dig 3-jack with SPDIF OUT
898 6stack-dig 6-jack with SPDIF OUT
899 3stack-660 3-jack (for ALC660VD)
900 3stack-660-digout 3-jack with SPDIF OUT (for ALC660VD)
901 lenovo Lenovo 3000 C200
902 dallas Dallas laptops
904 auto auto-config reading BIOS (default)
907 minimal 3-jack in back
908 min_fp 3-jack in back, 2-jack in front
909 full 6-jack in back, 2-jack in front
910 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
911 allout 5-jack in back, 2-jack in front, SPDIF out
912 auto auto-config reading BIOS (default)
915 3stack 3-stack mode (default)
922 basic 3-jack (default)
924 thinkpad Lenovo Thinkpad T60/X60/Z60
931 basic default configuration
932 thinkpad Lenovo Thinkpad T61/X61
935 6stack 6-jack, separate surrounds (default)
936 3stack 3-stack, shared surrounds
937 laptop 2-channel only (FSC V2060, Samsung M50)
938 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
939 laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
940 ultra 2-channel with EAPD (Samsung Ultra tablet PC)
944 6stack-dig ditto with SPDIF
946 3stack-dig ditto with SPDIF
947 laptop 3-jack with hp-jack automute
948 laptop-dig ditto with SPDIF
949 auto auto-config reading BIOS (default)
953 test for testing/debugging purpose, almost all controls
954 can be adjusted. Appearing only when compiled with
958 laptop Basic Laptop config
959 laptop-hp Laptop config for some HP models (subdevice 30A5)
960 laptop-eapd Laptop config with EAPD support
961 test for testing/debugging purpose, almost all controls
962 can be adjusted. Appearing only when compiled with
967 dell-d21 Dell (unknown)
968 dell-d22 Dell (unknown)
969 dell-d23 Dell (unknown)
970 dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
971 dell-m22 Dell Latitude D620, Dell Latitude D820
972 dell-m23 Dell XPS M1710, Dell Precision M90
973 dell-m24 Dell Latitude 120L
974 dell-m25 Dell Inspiron E1505n
975 dell-m26 Dell Inspiron 1501
976 dell-m27 Dell Inspiron E1705/9400
977 gateway Gateway laptops with EAPD control
981 dell-m42 Dell (unknown)
982 dell-m43 Dell Precision
983 dell-m44 Dell Inspiron
988 5stack D945 5stack + SPDIF
989 intel-mac-v1 Intel Mac Type 1
990 intel-mac-v2 Intel Mac Type 2
991 intel-mac-v3 Intel Mac Type 3
992 intel-mac-v4 Intel Mac Type 4
993 intel-mac-v5 Intel Mac Type 5
994 macmini Intel Mac Mini (equivalent with type 3)
995 macbook Intel Mac Book (eq. type 5)
996 macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
997 macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
998 imac-intel Intel iMac (eq. type 2)
999 imac-intel-20 Intel iMac (newer version) (eq. type 3)
1000 dell-d81 Dell (unknown)
1001 dell-d82 Dell (unknown)
1002 dell-m81 Dell (unknown)
1003 dell-m82 Dell XPS M1210
1006 ref Reference board, base config
1007 m2-2 Some Gateway MX series laptops
1008 m6 Some Gateway NX series laptops
1009 pa6 Gateway NX860 series
1011 STAC9227/9228/9229/927x
1014 5stack D965 5stack + SPDIF
1015 dell-3stack Dell Dimension E520
1018 vaio Setup for VAIO FE550G/SZ110
1019 vaio-ar Setup for VAIO AR
1021 The model name "genric" is treated as a special case. When this
1022 model is given, the driver uses the generic codec parser without
1023 "codec-patch". It's sometimes good for testing and debugging.
1025 If the default configuration doesn't work and one of the above
1026 matches with your device, report it together with the PCI
1027 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
1028 ML (see the section "Links and Addresses").
1030 power_save and power_save_controller options are for power-saving
1031 mode. See powersave.txt for details.
1033 Note 2: If you get click noises on output, try the module option
1034 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
1035 register value without FIFO size correction as the current
1036 DMA pointer. position_fix=2 will make the driver to use
1037 the position buffer instead of reading SD_LPIB register.
1038 (Usually SD_LPLIB register is more accurate than the
1041 NB: If you get many "azx_get_response timeout" messages at
1042 loading, it's likely a problem of interrupts (e.g. ACPI irq
1043 routing). Try to boot with options like "pci=noacpi". Also, you
1044 can try "single_cmd=1" module option. This will switch the
1045 communication method between HDA controller and codecs to the
1046 single immediate commands instead of CORB/RIRB. Basically, the
1047 single command mode is provided only for BIOS, and you won't get
1048 unsolicited events, too. But, at least, this works independently
1049 from the irq. Remember this is a last resort, and should be
1050 avoided as much as possible...
1052 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
1053 On some hardwares, you may need to add a proper probe_mask option
1054 to avoid the "azx_get_response timeout" problem above, instead.
1055 This occurs when the access to non-existing or non-working codec slot
1056 (likely a modem one) causes a stall of the communication via HD-audio
1057 bus. You can see which codec slots are probed by enabling
1058 CONFIG_SND_DEBUG_DETECT, or simply from the file name of the codec
1059 proc files. Then limit the slots to probe by probe_mask option.
1060 For example, probe_mask=1 means to probe only the first slot, and
1061 probe_mask=4 means only the third slot.
1063 The power-management is supported.
1068 Module for RME Hammerfall DSP audio interface(s)
1070 This module supports multiple cards.
1072 Note: The firmware data can be automatically loaded via hotplug
1073 when CONFIG_FW_LOADER is set. Otherwise, you need to load
1074 the firmware via hdsploader utility included in alsa-tools
1076 The firmware data is found in alsa-firmware package.
1078 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1079 module did formerly. It will allocate the buffers in advance
1080 when any HDSP cards are found. To make the buffer
1081 allocation sure, load snd-page-alloc module in the early
1082 stage of boot sequence. See "Early Buffer Allocation"
1088 Module for RME HDSP MADI board.
1090 precise_ptr - Enable precise pointer, or disable.
1091 line_outs_monitor - Send playback streams to analog outs by default.
1092 enable_monitor - Enable Analog Out on Channel 63/64 by default.
1094 See hdspm.txt for details.
1099 Module for Envy24 (ICE1712) based PCI sound cards.
1100 * MidiMan M Audio Delta 1010
1101 * MidiMan M Audio Delta 1010LT
1102 * MidiMan M Audio Delta DiO 2496
1103 * MidiMan M Audio Delta 66
1104 * MidiMan M Audio Delta 44
1105 * MidiMan M Audio Delta 410
1106 * MidiMan M Audio Audiophile 2496
1109 * TerraTec EWX 24/96
1110 * TerraTec DMX 6Fire
1112 * Hoontech SoundTrack DSP 24
1113 * Hoontech SoundTrack DSP 24 Value
1114 * Hoontech SoundTrack DSP 24 Media 7.1
1115 * Event Electronics, EZ8
1117 * Lionstracs, Mediastaton
1119 model - Use the given board model, one of the following:
1120 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1121 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
1122 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1123 phase88, mediastation
1124 omni - Omni I/O support for MidiMan M-Audio Delta44/66
1125 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
1126 in msec resolution, default value is 500 (0.5 sec)
1128 This module supports multiple cards and autoprobe. Note: The consumer part
1129 is not used with all Envy24 based cards (for example in the MidiMan Delta
1132 Note: The supported board is detected by reading EEPROM or PCI
1133 SSID (if EEPROM isn't available). You can override the
1134 model by passing "model" module option in case that the
1135 driver isn't configured properly or you want to try another
1141 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
1142 * MidiMan M Audio Revolution 5.1
1143 * MidiMan M Audio Revolution 7.1
1144 * MidiMan M Audio Audiophile 192
1146 * TerraTec Aureon 5.1 Sky
1147 * TerraTec Aureon 7.1 Space
1148 * TerraTec Aureon 7.1 Universe
1151 * AudioTrak Prodigy 7.1
1152 * AudioTrak Prodigy 7.1LT
1153 * AudioTrak Prodigy 192
1155 * Albatron K8X800 Pro II
1156 * Chaintech ZNF3-150
1157 * Chaintech ZNF3-250
1164 model - Use the given board model, one of the following:
1165 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1166 prodigy192, aureon51, aureon71, universe, ap192,
1167 k8x800, phase22, phase28, ms300, av710, se200pci,
1170 This module supports multiple cards and autoprobe.
1172 Note: The supported board is detected by reading EEPROM or PCI
1173 SSID (if EEPROM isn't available). You can override the
1174 model by passing "model" module option in case that the
1175 driver isn't configured properly or you want to try another
1181 Module for Echoaudio Indigo
1183 This module supports multiple cards.
1184 The driver requires the firmware loader support on kernel.
1189 Module for Echoaudio Indigo DJ
1191 This module supports multiple cards.
1192 The driver requires the firmware loader support on kernel.
1197 Module for Echoaudio Indigo IO
1199 This module supports multiple cards.
1200 The driver requires the firmware loader support on kernel.
1205 Module for AC'97 motherboards from Intel and compatibles.
1206 * Intel i810/810E, i815, i820, i830, i84x, MX440
1207 ICH5, ICH6, ICH7, ESB2
1208 * SiS 7012 (SiS 735)
1209 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1211 * AMD AMD768, AMD8111
1214 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1215 ac97_quirk - AC'97 workaround for strange hardware
1216 See "AC97 Quirk Option" section below.
1217 buggy_irq - Enable workaround for buggy interrupts on some
1218 motherboards (default yes on nForce chips,
1220 buggy_semaphore - Enable workaround for hardwares with buggy
1221 semaphores (e.g. on some ASUS laptops)
1223 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1224 from the controller chip
1225 (0 = off, 1 = on, -1 = default)
1227 This module supports one chip and autoprobe.
1229 Note: the latest driver supports auto-detection of chip clock.
1230 if you still encounter too fast playback, specify the clock
1231 explicitly via the module option "ac97_clock=41194".
1233 Joystick/MIDI ports are not supported by this driver. If your
1234 motherboard has these devices, use the ns558 or snd-mpu401
1235 modules, respectively.
1237 The power-management is supported.
1239 Module snd-intel8x0m
1240 --------------------
1242 Module for Intel ICH (i8x0) chipset MC97 modems.
1243 * Intel i810/810E, i815, i820, i830, i84x, MX440
1245 * SiS 7013 (SiS 735)
1246 * NVidia NForce, NForce2, NForce2s, NForce3
1250 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1252 This module supports one card and autoprobe.
1254 Note: The default index value of this module is -2, i.e. the first
1257 The power-management is supported.
1259 Module snd-interwave
1260 --------------------
1262 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1263 and other sound cards based on AMD InterWave (tm) chip.
1265 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1266 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1267 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1268 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1269 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1270 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1271 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1272 effect - 1 = InterWave effects enable (default 0);
1275 This module supports multiple cards, autoprobe and ISA PnP.
1277 Module snd-interwave-stb
1278 ------------------------
1280 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1281 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1282 circuit for extended control of bass, treble and master volume.
1284 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1285 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1286 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1287 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1288 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1289 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1290 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1291 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1292 effect - 1 = InterWave effects enable (default 0);
1295 This module supports multiple cards, autoprobe and ISA PnP.
1300 Module for Korg 1212 IO PCI card
1302 This module supports multiple cards.
1307 Module for Echoaudio Layla20
1309 This module supports multiple cards.
1310 The driver requires the firmware loader support on kernel.
1315 Module for Echoaudio Layla24
1317 This module supports multiple cards.
1318 The driver requires the firmware loader support on kernel.
1323 Module for Allegro/Maestro3 chips
1325 external_amp - enable external amp (enabled by default)
1326 amp_gpio - GPIO pin number for external amp (0-15) or
1327 -1 for default pin (8 for allegro, 1 for
1330 This module supports autoprobe and multiple chips.
1332 Note: the binding of amplifier is dependent on hardware.
1333 If there is no sound even though all channels are unmuted, try to
1334 specify other gpio connection via amp_gpio option.
1335 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1338 The power-management is supported.
1343 Module for Echoaudio Mia
1345 This module supports multiple cards.
1346 The driver requires the firmware loader support on kernel.
1351 Module for Miro soundcards: miroSOUND PCM 1 pro,
1353 miroSOUND PCM 20 Radio.
1355 port - Port # (0x530,0x604,0xe80,0xf40)
1356 irq - IRQ # (5,7,9,10,11)
1357 dma1 - 1st dma # (0,1,3)
1358 dma2 - 2nd dma # (0,1)
1359 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1360 mpu_irq - MPU-401 irq # (5,7,9,10)
1361 fm_port - FM Port # (0x388)
1362 wss - enable WSS mode
1363 ide - enable onboard ide support
1368 Module for Digigram miXart8 sound cards.
1370 This module supports multiple cards.
1371 Note: One miXart8 board will be represented as 4 alsa cards.
1372 See MIXART.txt for details.
1374 When the driver is compiled as a module and the hotplug firmware
1375 is supported, the firmware data is loaded via hotplug automatically.
1376 Install the necessary firmware files in alsa-firmware package.
1377 When no hotplug fw loader is available, you need to load the
1378 firmware via mixartloader utility in alsa-tools package.
1383 Module for Echoaudio Mona
1385 This module supports multiple cards.
1386 The driver requires the firmware loader support on kernel.
1391 Module for MPU-401 UART devices.
1393 port - port number or -1 (disable)
1394 irq - IRQ number or -1 (disable)
1395 pnp - PnP detection - 0 = disable, 1 = enable (default)
1397 This module supports multiple devices and PnP.
1402 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1405 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1406 irq - IRQ # for MTPAV (7,5, default=7)
1407 hwports - number of supported hardware ports, default=8.
1409 Module supports only 1 card. This module has no enable option.
1414 Module for Ego Systems (ESI) Miditerminal 4140
1416 This module supports multiple devices.
1417 Requires parport (CONFIG_PARPORT).
1422 Module for NeoMagic NM256AV/ZX chips
1424 playback_bufsize - max playback frame size in kB (4-128kB)
1425 capture_bufsize - max capture frame size in kB (4-128kB)
1426 force_ac97 - 0 or 1 (disabled by default)
1427 buffer_top - specify buffer top address
1428 use_cache - 0 or 1 (disabled by default)
1429 vaio_hack - alias buffer_top=0x25a800
1430 reset_workaround - enable AC97 RESET workaround for some laptops
1431 reset_workaround2 - enable extended AC97 RESET workaround for some
1434 This module supports one chip and autoprobe.
1436 The power-management is supported.
1438 Note: on some notebooks the buffer address cannot be detected
1439 automatically, or causes hang-up during initialization.
1440 In such a case, specify the buffer top address explicitly via
1441 the buffer_top option.
1443 Sony F250: buffer_top=0x25a800
1444 Sony F270: buffer_top=0x272800
1445 The driver supports only ac97 codec. It's possible to force
1446 to initialize/use ac97 although it's not detected. In such a
1447 case, use force_ac97=1 option - but *NO* guarantee whether it
1450 Note: The NM256 chip can be linked internally with non-AC97
1451 codecs. This driver supports only the AC97 codec, and won't work
1452 with machines with other (most likely CS423x or OPL3SAx) chips,
1453 even though the device is detected in lspci. In such a case, try
1454 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1455 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1456 and proper hardware parameters in the case without ISA PnP.
1458 Note: some laptops need a workaround for AC97 RESET. For the
1459 known hardware like Dell Latitude LS and Sony PCG-F305, this
1460 workaround is enabled automatically. For other laptops with a
1461 hard freeze, you can try reset_workaround=1 option.
1463 Note: Dell Latitude CSx laptops have another problem regarding
1464 AC97 RESET. On these laptops, reset_workaround2 option is
1465 turned on as default. This option is worth to try if the
1466 previous reset_workaround option doesn't help.
1468 Note: This driver is really crappy. It's a porting from the
1469 OSS driver, which is a result of black-magic reverse engineering.
1470 The detection of codec will fail if the driver is loaded *after*
1471 X-server as described above. You might be able to force to load
1472 the module, but it may result in hang-up. Hence, make sure that
1473 you load this module *before* X if you encounter this kind of
1479 Module for Yamaha OPL3-SA2/SA3 sound cards.
1481 port - control port # for OPL3-SA chip (0x370)
1482 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1483 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1484 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1485 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1486 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1487 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1488 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1489 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1491 This module supports multiple cards and ISA PnP. It does not support
1492 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1494 The power-management is supported.
1496 Module snd-opti92x-ad1848
1497 -------------------------
1499 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1500 Module works with OAK Mozart cards as well.
1502 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1503 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1504 fm_port - port # for OPL3 device (0x388)
1505 irq - IRQ # for WSS chip (5,7,9,10,11)
1506 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1507 dma1 - first DMA # for WSS chip (0,1,3)
1509 This module supports only one card, autoprobe and PnP.
1511 Module snd-opti92x-cs4231
1512 -------------------------
1514 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1516 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1517 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1518 fm_port - port # for OPL3 device (0x388)
1519 irq - IRQ # for WSS chip (5,7,9,10,11)
1520 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1521 dma1 - first DMA # for WSS chip (0,1,3)
1522 dma2 - second DMA # for WSS chip (0,1,3)
1524 This module supports only one card, autoprobe and PnP.
1529 Module for sound cards based on OPTi 82c93x chips.
1531 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1532 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1533 fm_port - port # for OPL3 device (0x388)
1534 irq - IRQ # for WSS chip (5,7,9,10,11)
1535 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1536 dma1 - first DMA # for WSS chip (0,1,3)
1537 dma2 - second DMA # for WSS chip (0,1,3)
1539 This module supports only one card, autoprobe and PnP.
1544 Module for Digigram PCXHR boards
1546 This module supports multiple cards.
1548 Module snd-portman2x4
1549 ---------------------
1551 Module for Midiman Portman 2x4 parallel port MIDI interface
1553 This module supports multiple cards.
1555 Module snd-powermac (on ppc only)
1556 ---------------------------------
1558 Module for PowerMac, iMac and iBook on-board soundchips
1560 enable_beep - enable beep using PCM (enabled as default)
1562 Module supports autoprobe a chip.
1564 Note: the driver may have problems regarding endianess.
1566 The power-management is supported.
1568 Module snd-pxa2xx-ac97 (on arm only)
1569 ------------------------------------
1571 Module for AC97 driver for the Intel PXA2xx chip
1573 For ARM architecture only.
1575 The power-management is supported.
1580 Module for Conexant Riptide chip
1582 joystick_port - Joystick port # (default: 0x200)
1583 mpu_port - MPU401 port # (default: 0x330)
1584 opl3_port - OPL3 port # (default: 0x388)
1586 This module supports multiple cards.
1587 The driver requires the firmware loader support on kernel.
1588 You need to install the firmware file "riptide.hex" to the standard
1589 firmware path (e.g. /lib/firmware).
1594 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1595 Prodif96 and Prodif Gold) sound cards.
1597 This module supports multiple cards.
1602 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1604 This module supports multiple cards.
1609 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1611 precise_ptr - Enable precise pointer (doesn't work reliably).
1614 This module supports multiple cards.
1616 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1617 module did formerly. It will allocate the buffers in advance
1618 when any RME9652 cards are found. To make the buffer
1619 allocation sure, load snd-page-alloc module in the early
1620 stage of boot sequence. See "Early Buffer Allocation"
1623 Module snd-sa11xx-uda1341 (on arm only)
1624 ---------------------------------------
1626 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1628 Module supports only one card.
1629 Module has no enable and index options.
1631 The power-management is supported.
1636 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1640 port - port # for SB DSP chip (0x220,0x240,0x260)
1641 irq - IRQ # for SB DSP chip (5,7,9,10)
1642 dma8 - DMA # for SB DSP chip (1,3)
1644 This module supports multiple cards and autoprobe.
1646 The power-management is supported.
1648 Module snd-sb16 and snd-sbawe
1649 -----------------------------
1651 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1652 SoundBlaster AWE 32 (PnP),
1653 SoundBlaster AWE 64 PnP
1655 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1656 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1657 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1658 (snd-sbawe module only)
1659 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1660 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1661 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1662 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1663 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1664 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1666 This module supports multiple cards, autoprobe and ISA PnP.
1668 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1669 disable 16bit DMA with dma16 = -1 module parameter.
1670 Also, all Sound Blaster 16 type cards can operate in 16-bit
1671 half duplex mode through 8-bit DMA channel by disabling their
1674 The power-management is supported.
1679 Module for Gallant SC-6000 soundcard.
1681 port - Port # (0x220 or 0x240)
1682 mss_port - MSS Port # (0x530 or 0xe80)
1683 irq - IRQ # (5,7,9,10,11)
1684 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
1687 This module supports multiple cards.
1689 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1694 Module for Aztech Sound Galaxy sound card.
1696 sbport - Port # for SB16 interface (0x220,0x240)
1697 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1698 irq - IRQ # (7,9,10,11)
1701 This module supports multiple cards.
1703 The power-management is supported.
1708 Module for ENSONIQ SoundScape PnP cards.
1710 port - Port # (PnP setup)
1711 wss_port - WSS Port # (PnP setup)
1712 irq - IRQ # (PnP setup)
1713 mpu_irq - MPU-401 IRQ # (PnP setup)
1714 dma - DMA # (PnP setup)
1715 dma2 - 2nd DMA # (PnP setup, -1 to disable)
1717 This module supports multiple cards. ISA PnP must be enabled.
1718 You need sscape_ctl tool in alsa-tools package for loading
1721 Module snd-sun-amd7930 (on sparc only)
1722 --------------------------------------
1724 Module for AMD7930 sound chips found on Sparcs.
1726 This module supports multiple cards.
1728 Module snd-sun-cs4231 (on sparc only)
1729 -------------------------------------
1731 Module for CS4231 sound chips found on Sparcs.
1733 This module supports multiple cards.
1735 Module snd-sun-dbri (on sparc only)
1736 -----------------------------------
1738 Module for DBRI sound chips found on Sparcs.
1740 This module supports multiple cards.
1742 Module snd-wavefront
1743 --------------------
1745 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1747 cs4232_pcm_port - Port # for CS4232 PCM interface.
1748 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1749 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1750 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1751 use_cs4232_midi - Use CS4232 MPU-401 interface
1752 (inaccessibly located inside your computer)
1753 ics2115_port - Port # for ICS2115
1754 ics2115_irq - IRQ # for ICS2115
1755 fm_port - FM OPL-3 Port #
1756 dma1 - DMA1 # for CS4232 PCM interface.
1757 dma2 - DMA2 # for CS4232 PCM interface.
1758 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1760 The below are options for wavefront_synth features:
1761 wf_raw - Assume that we need to boot the OS (default:no)
1762 If yes, then during driver loading, the state of the board is
1763 ignored, and we reset the board and load the firmware anyway.
1764 fx_raw - Assume that the FX process needs help (default:yes)
1765 If false, we'll leave the FX processor in whatever state it is
1766 when the driver is loaded. The default is to download the
1767 microprogram and associated coefficients to set it up for
1768 "default" operation, whatever that means.
1769 debug_default - Debug parameters for card initialization
1770 wait_usecs - How long to wait without sleeping, usecs
1772 This magic number seems to give pretty optimal throughput
1773 based on my limited experimentation.
1774 If you want to play around with it and find a better value, be
1775 my guest. Remember, the idea is to get a number that causes us
1776 to just busy wait for as many WaveFront commands as possible,
1777 without coming up with a number so large that we hog the whole
1779 Specifically, with this number, out of about 134,000 status
1780 waits, only about 250 result in a sleep.
1781 sleep_interval - How long to sleep when waiting for reply
1783 sleep_tries - How many times to try sleeping during a wait
1785 ospath - Pathname to processed ICS2115 OS firmware
1786 (default:wavefront.os)
1787 The path name of the ISC2115 OS firmware. In the recent
1788 version, it's handled via firmware loader framework, so it
1789 must be installed in the proper path, typically,
1791 reset_time - How long to wait for a reset to take effect
1793 ramcheck_time - How many seconds to wait for the RAM test
1795 osrun_time - How many seconds to wait for the ICS2115 OS
1798 This module supports multiple cards and ISA PnP.
1800 Note: the firmware file "wavefront.os" was located in the earlier
1801 version in /etc. Now it's loaded via firmware loader, and
1802 must be in the proper firmware path, such as /lib/firmware.
1803 Copy (or symlink) the file appropriately if you get an error
1804 regarding firmware downloading after upgrading the kernel.
1806 Module snd-sonicvibes
1807 ---------------------
1809 Module for S3 SonicVibes PCI sound cards.
1810 * PINE Schubert 32 PCI
1812 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1813 - SoundCard must have onboard SRAM for this.
1814 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1816 This module supports multiple cards and autoprobe.
1818 Module snd-serial-u16550
1819 ------------------------
1821 Module for UART16550A serial MIDI ports.
1823 port - port # for UART16550A chip
1824 irq - IRQ # for UART16550A chip, -1 = poll mode
1825 speed - speed in bauds (9600,19200,38400,57600,115200)
1827 base - base for divisor in bauds (57600,115200,230400,460800)
1829 outs - number of MIDI ports in a serial port (1-4)
1831 adaptor - Type of adaptor.
1832 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1833 3 = MS-124W M/B, 4 = Generic
1835 This module supports multiple cards. This module does not support autoprobe
1836 thus the main port must be specified!!! Other options are optional.
1841 Module for Trident 4DWave DX/NX sound cards.
1842 * Best Union Miss Melody 4DWave PCI
1844 * Warpspeed ONSpeed 4DWave PCI
1847 * CHIC True Sound 4Dwave
1848 * Shark Predator4D-PCI
1849 * Jaton SonicWave 4D
1851 pcm_channels - max channels (voices) reserved for PCM
1852 wavetable_size - max wavetable size in kB (4-?kb)
1854 This module supports multiple cards and autoprobe.
1856 The power-management is supported.
1858 Module snd-usb-audio
1859 --------------------
1861 Module for USB audio and USB MIDI devices.
1863 vid - Vendor ID for the device (optional)
1864 pid - Product ID for the device (optional)
1865 device_setup - Device specific magic number (optional)
1866 - Influence depends on the device
1869 This module supports multiple devices, autoprobe and hotplugging.
1871 Module snd-usb-caiaq
1872 --------------------
1874 Module for caiaq UB audio interfaces,
1875 * Native Instruments RigKontrol2
1876 * Native Instruments Kore Controller
1877 * Native Instruments Audio Kontrol 1
1878 * Native Instruments Audio 8 DJ
1880 This module supports multiple devices, autoprobe and hotplugging.
1882 Module snd-usb-usx2y
1883 --------------------
1885 Module for Tascam USB US-122, US-224 and US-428 devices.
1887 This module supports multiple devices, autoprobe and hotplugging.
1889 Note: you need to load the firmware via usx2yloader utility included
1890 in alsa-tools and alsa-firmware packages.
1895 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1896 8233A, 8233C, 8235, 8237 (south) bridge.
1898 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1900 joystick - Enable joystick (default off) [VIA686A/686B only]
1901 ac97_clock - AC'97 codec clock base (default 48000Hz)
1902 dxs_support - support DXS channels,
1903 0 = auto (default), 1 = enable, 2 = disable,
1904 3 = 48k only, 4 = no VRA, 5 = enable any sample
1905 rate and different sample rates on different
1907 [VIA8233/C, 8235, 8237 only]
1908 ac97_quirk - AC'97 workaround for strange hardware
1909 See "AC97 Quirk Option" section below.
1911 This module supports one chip and autoprobe.
1913 Note: on some SMP motherboards like MSI 694D the interrupts might
1914 not be generated properly. In such a case, please try to
1915 set the SMP (or MPS) version on BIOS to 1.1 instead of
1916 default value 1.4. Then the interrupt number will be
1917 assigned under 15. You might also upgrade your BIOS.
1919 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1920 channels as the first PCM. On these channels, up to 4
1921 streams can be played at the same time, and the controller
1922 can perform sample rate conversion with separate rates for
1924 As default (dxs_support = 0), 48k fixed rate is chosen
1925 except for the known devices since the output is often
1926 noisy except for 48k on some mother boards due to the
1928 Please try once dxs_support=5 and if it works on other
1929 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1930 know the PCI subsystem vendor/device id's (output of
1932 If dxs_support=5 does not work, try dxs_support=4; if it
1933 doesn't work too, try dxs_support=1. (dxs_support=1 is
1934 usually for old motherboards. The correct implemented
1935 board should work with 4 or 5.) If it still doesn't
1936 work and the default setting is ok, dxs_support=3 is the
1937 right choice. If the default setting doesn't work at all,
1938 try dxs_support=2 to disable the DXS channels.
1939 In any cases, please let us know the result and the
1940 subsystem vendor/device ids. See "Links and Addresses"
1943 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1944 additionally. The mpu_port option is for VIA686 chips only.
1946 The power-management is supported.
1948 Module snd-via82xx-modem
1949 ------------------------
1951 Module for VIA82xx AC97 modem
1953 ac97_clock - AC'97 codec clock base (default 48000Hz)
1955 This module supports one card and autoprobe.
1957 Note: The default index value of this module is -2, i.e. the first
1960 The power-management is supported.
1965 Module for virtual rawmidi devices.
1966 This module creates virtual rawmidi devices which communicate
1967 to the corresponding ALSA sequencer ports.
1969 midi_devs - MIDI devices # (1-4, default=4)
1971 This module supports multiple cards.
1976 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1978 mic - Enable Microphone on V222 Mic (NYI)
1979 ibl - Capture IBL size. (default = 0, minimum size)
1981 This module supports multiple cards.
1983 When the driver is compiled as a module and the hotplug firmware
1984 is supported, the firmware data is loaded via hotplug automatically.
1985 Install the necessary firmware files in alsa-firmware package.
1986 When no hotplug fw loader is available, you need to load the
1987 firmware via vxloader utility in alsa-tools package. To invoke
1988 vxloader automatically, add the following to /etc/modprobe.conf
1990 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1992 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1993 /etc/modules.conf, instead.)
1994 IBL size defines the interrupts period for PCM. The smaller size
1995 gives smaller latency but leads to more CPU consumption, too.
1996 The size is usually aligned to 126. As default (=0), the smallest
1997 size is chosen. The possible IBL values can be found in
1998 /proc/asound/cardX/vx-status proc file.
2000 The power-management is supported.
2005 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
2007 ibl - Capture IBL size. (default = 0, minimum size)
2009 This module supports multiple cards. The module is compiled only when
2010 PCMCIA is supported on kernel.
2012 With the older 2.6.x kernel, to activate the driver via the card
2013 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2014 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2015 longer require a config file.
2017 When the driver is compiled as a module and the hotplug firmware
2018 is supported, the firmware data is loaded via hotplug automatically.
2019 Install the necessary firmware files in alsa-firmware package.
2020 When no hotplug fw loader is available, you need to load the
2021 firmware via vxloader utility in alsa-tools package.
2023 About capture IBL, see the description of snd-vx222 module.
2025 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
2028 The power-management is supported.
2033 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2035 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2036 1 (auto-detect for YMF744/754 only)
2037 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2038 1 (auto-detect for YMF744/754 only)
2039 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2041 rear_switch - enable shared rear/line-in switch (bool)
2043 This module supports autoprobe and multiple chips.
2045 The power-management is supported.
2047 Module snd-pdaudiocf
2048 --------------------
2050 Module for Sound Core PDAudioCF sound card.
2052 The power-management is supported.
2058 The ac97_quirk option is used to enable/override the workaround for
2059 specific devices on drivers for on-board AC'97 controllers like
2060 snd-intel8x0. Some hardware have swapped output pins between Master
2061 and Headphone, or Surround (thanks to confusion of AC'97
2062 specifications from version to version :-)
2064 The driver provides the auto-detection of known problematic devices,
2065 but some might be unknown or wrongly detected. In such a case, pass
2066 the proper value with this option.
2068 The following strings are accepted:
2069 - default Don't override the default setting
2070 - none Disable the quirk
2071 - hp_only Bind Master and Headphone controls as a single control
2072 - swap_hp Swap headphone and master controls
2073 - swap_surround Swap master and surround controls
2074 - ad_sharing For AD1985, turn on OMS bit and use headphone
2075 - alc_jack For ALC65x, turn on the jack sense mode
2076 - inv_eapd Inverted EAPD implementation
2077 - mute_led Bind EAPD bit for turning on/off mute LED
2079 For backward compatibility, the corresponding integer value -1, 0,
2080 ... are accepted, too.
2082 For example, if "Master" volume control has no effect on your device
2083 but only "Headphone" does, pass ac97_quirk=hp_only module option.
2086 Configuring Non-ISAPNP Cards
2087 ============================
2089 When the kernel is configured with ISA-PnP support, the modules
2090 supporting the isapnp cards will have module options "isapnp".
2091 If this option is set, *only* the ISA-PnP devices will be probed.
2092 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2093 together with the proper i/o and irq configuration.
2095 When the kernel is configured without ISA-PnP support, isapnp option
2096 will be not built in.
2099 Module Autoloading Support
2100 ==========================
2102 The ALSA drivers can be loaded automatically on demand by defining
2103 module aliases. The string 'snd-card-%1' is requested for ALSA native
2104 devices where %i is sound card number from zero to seven.
2106 To auto-load an ALSA driver for OSS services, define the string
2107 'sound-slot-%i' where %i means the slot number for OSS, which
2108 corresponds to the card index of ALSA. Usually, define this
2109 as the same card module.
2111 An example configuration for a single emu10k1 card is like below:
2112 ----- /etc/modprobe.conf
2113 alias snd-card-0 snd-emu10k1
2114 alias sound-slot-0 snd-emu10k1
2115 ----- /etc/modprobe.conf
2117 The available number of auto-loaded sound cards depends on the module
2118 option "cards_limit" of snd module. As default it's set to 1.
2119 To enable the auto-loading of multiple cards, specify the number of
2120 sound cards in that option.
2122 When multiple cards are available, it'd better to specify the index
2123 number for each card via module option, too, so that the order of
2124 cards is kept consistent.
2126 An example configuration for two sound cards is like below:
2128 ----- /etc/modprobe.conf
2130 options snd cards_limit=2
2131 alias snd-card-0 snd-interwave
2132 alias snd-card-1 snd-ens1371
2133 options snd-interwave index=0
2134 options snd-ens1371 index=1
2136 alias sound-slot-0 snd-interwave
2137 alias sound-slot-1 snd-ens1371
2138 ----- /etc/modprobe.conf
2140 In this example, the interwave card is always loaded as the first card
2141 (index 0) and ens1371 as the second (index 1).
2144 ALSA PCM devices to OSS devices mapping
2145 =======================================
2147 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2148 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2149 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2150 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2151 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2152 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2153 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2154 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2155 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2157 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2158 sound card number and second means device number. The ALSA devices
2159 have either 'c' or 'p' suffix indicating the direction, capture and
2160 playback, respectively.
2162 Please note that the device mapping above may be varied via the module
2163 options of snd-pcm-oss module.
2166 Proc interfaces (/proc/asound)
2167 ==============================
2169 /proc/asound/card#/pcm#[cp]/oss
2170 -------------------------------
2171 String "erase" - erase all additional informations about OSS applications
2172 String "<app_name> <fragments> <fragment_size> [<options>]"
2174 <app_name> - name of application with (higher priority) or without path
2175 <fragments> - number of fragments or zero if auto
2176 <fragment_size> - size of fragment in bytes or zero if auto
2177 <options> - optional parameters
2178 - disable the application tries to open a pcm device for
2179 this channel but does not want to use it.
2180 (Cause a bug or mmap needs)
2181 It's good for Quake etc...
2182 - direct don't use plugins
2183 - block force block mode (rvplayer)
2184 - non-block force non-block mode
2185 - whole-frag write only whole fragments (optimization affecting
2187 - no-silence do not fill silence ahead to avoid clicks
2188 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2189 instead of filled blocks
2191 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2192 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2193 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2196 Early Buffer Allocation
2197 =======================
2199 Some drivers (e.g. hdsp) require the large contiguous buffers, and
2200 sometimes it's too late to find such spaces when the driver module is
2201 actually loaded due to memory fragmentation. You can pre-allocate the
2202 PCM buffers by loading snd-page-alloc module and write commands to its
2203 proc file in prior, for example, in the early boot stage like
2204 /etc/init.d/*.local scripts.
2206 Reading the proc file /proc/drivers/snd-page-alloc shows the current
2207 usage of page allocation. In writing, you can send the following
2208 commands to the snd-page-alloc driver:
2210 - add VENDOR DEVICE MASK SIZE BUFFERS
2212 VENDOR and DEVICE are PCI vendor and device IDs. They take
2213 integer numbers (0x prefix is needed for the hex).
2214 MASK is the PCI DMA mask. Pass 0 if not restricted.
2215 SIZE is the size of each buffer to allocate. You can pass
2216 k and m suffix for KB and MB. The max number is 16MB.
2217 BUFFERS is the number of buffers to allocate. It must be greater
2218 than 0. The max number is 4.
2222 This will erase the all pre-allocated buffers which are not in
2229 ALSA project homepage
2230 http://www.alsa-project.org
2232 ALSA Bug Tracking System
2233 https://bugtrack.alsa-project.org/bugs/
2236 mailto:alsa-devel@alsa-project.org
projects / firefly-linux-kernel-4.4.55.git / blob