2 Advanced Linux Sound Architecture - Driver
3 ==========================================
10 To enable ALSA support you need at least to build the kernel with
11 primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,
12 you don't have to choose any of the OSS modules.
14 Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
15 PCM supports if you want to run OSS applications with ALSA.
17 If you want to support the WaveTable functionality on cards such as
18 SB Live! then you need to enable "Sequencer support"
19 (CONFIG_SND_SEQUENCER).
21 To make ALSA debug messages more verbose, enable the "Verbose printk"
22 and "Debug" options. To check for memory leaks, turn on "Debug memory"
23 too. "Debug detection" will add checks for the detection of cards.
25 Please note that all the ALSA ISA drivers support the Linux isapnp API
26 (if the card supports ISA PnP). You don't need to configure the cards
33 This depends on your distribution, but normally you use the /dev/MAKEDEV
34 script to create the necessary device nodes. On some systems you use a
35 script named 'snddevices'.
41 The user can load modules with options. If the module supports more than
42 one card and you have more than one card of the same type then you can
43 specify multiple values for the option separated by commas.
45 Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
50 The core ALSA module. It is used by all ALSA card drivers.
51 It takes the following options which have global effects.
53 major - major number for sound driver
56 - limiting card index for auto-loading (1-8)
58 - For auto-loading more than one card, specify this
59 option together with snd-card-X aliases.
61 - permission mask for dynamic sound device filesystem
62 - This is available only when DEVFS is enabled
64 - E.g.: device_mode=0660
70 The PCM OSS emulation module.
71 This module takes options which change the mapping of devices.
73 dsp_map - PCM device number maps assigned to the 1st OSS device.
75 adsp_map - PCM device number maps assigned to the 2st OSS device.
78 - Don't block opening busy PCM devices. Default: 1
80 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
81 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
82 to PCM #0 of the card #0.
83 For changing the second or later card, specify the option with
84 commas, such like "dsp_map=0,1".
86 nonblock_open option is used to change the behavior of the PCM
87 regarding opening the device. When this option is non-zero,
88 opening a busy OSS PCM device won't be blocked but return
89 immediately with EAGAIN (just like O_NONBLOCK flag).
94 This module takes options which change the mapping of devices.
95 similar to those of the snd-pcm-oss module.
97 midi_map - MIDI device number maps assigned to the 1st OSS device.
99 amidi_map - MIDI device number maps assigned to the 2st OSS device.
102 Common parameters for top sound card modules
103 --------------------------------------------
105 Each of top level sound card module takes the following options.
107 index - index (slot #) of sound card
108 - Values: 0 through 7 or negative
109 - If nonnegative, assign that index number
110 - if negative, interpret as a bitmask of permissible
111 indices; the first free permitted index is assigned
113 id - card ID (identifier or name)
114 - Can be up to 15 characters long
115 - Default: the card type
116 - A directory by this name is created under /proc/asound/
117 containing information about the card
118 - This ID can be used instead of the index number in
121 - Default: enabled, for PCI and ISA PnP cards
126 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
128 port - port # for AD1816A chip (PnP setup)
129 mpu_port - port # for MPU-401 UART (PnP setup)
130 fm_port - port # for OPL3 (PnP setup)
131 irq - IRQ # for AD1816A chip (PnP setup)
132 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
133 dma1 - first DMA # for AD1816A chip (PnP setup)
134 dma2 - second DMA # for AD1816A chip (PnP setup)
135 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
137 Module supports up to 8 cards, autoprobe and PnP.
142 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
144 port - port # for AD1848 chip
145 irq - IRQ # for AD1848 chip
146 dma1 - DMA # for AD1848 chip (0,1,3)
148 Module supports up to 8 cards. This module does not support autoprobe
149 thus main port must be specified!!! Other ports are optional.
154 Module for Analog Devices AD1889 chips.
156 ac97_quirk - AC'97 workaround for strange hardware
157 See the description of intel8x0 module for details.
159 This module supports up to 8 cards.
164 Module for ALi M5451 PCI chip.
166 pcm_channels - Number of hardware channels assigned for PCM
167 spdif - Support SPDIF I/O
170 This module supports one chip and autoprobe.
172 The power-management is supported.
177 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
179 port - port # for ALS100 (SB16) chip (PnP setup)
180 irq - IRQ # for ALS100 (SB16) chip (PnP setup)
181 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)
182 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)
183 mpu_port - port # for MPU-401 UART (PnP setup)
184 mpu_irq - IRQ # for MPU-401 (PnP setup)
185 fm_port - port # for OPL3 FM (PnP setup)
187 Module supports up to 8 cards, autoprobe and PnP.
192 Module for sound cards based on Avance Logic ALS4000 PCI chip.
194 joystick_port - port # for legacy joystick support.
195 0 = disabled (default), 1 = auto-detect
197 Module supports up to 8 cards, autoprobe and PnP.
202 Module for ATI IXP 150/200/250/400 AC97 controllers.
204 ac97_clock - AC'97 clock (default = 48000)
205 ac97_quirk - AC'97 workaround for strange hardware
206 See "AC97 Quirk Option" section below.
207 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
209 This module supports one card and autoprobe.
211 ATI IXP has two different methods to control SPDIF output. One is
212 over AC-link and another is over the "direct" SPDIF output. The
213 implementation depends on the motherboard, and you'll need to
214 choose the correct one via spdif_aclink module option.
216 Module snd-atiixp-modem
217 -----------------------
219 Module for ATI IXP 150/200/250 AC97 modem controllers.
221 This module supports one card and autoprobe.
223 Note: The default index value of this module is -2, i.e. the first
226 Module snd-au8810, snd-au8820, snd-au8830
227 -----------------------------------------
229 Module for Aureal Vortex, Vortex2 and Advantage device.
231 pcifix - Control PCI workarounds
232 0 = Disable all workarounds
233 1 = Force the PCI latency of the Aureal card to 0xff
234 2 = Force the Extend PCI#2 Internal Master for Efficient
235 Handling of Dummy Requests on the VIA KT133 AGP Bridge
236 3 = Force both settings
237 255 = Autodetect what is required (default)
239 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
240 EQ, mpu401, gameport. A3D and wavetable support are still in development.
241 Development and reverse engineering work is being coordinated at
242 http://savannah.nongnu.org/projects/openvortex/
243 SPDIF output has a copy of the AC97 codec output, unless you use the
244 "spdif" pcm device, which allows raw data passthru.
245 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
248 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
249 control correctly. If you have problems regarding this, try
250 another ALSA compliant mixer (alsamixer works).
255 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
257 port - port # for AZT2320 chip (PnP setup)
258 wss_port - port # for WSS (PnP setup)
259 mpu_port - port # for MPU-401 UART (PnP setup)
260 fm_port - FM port # for AZT2320 chip (PnP setup)
261 irq - IRQ # for AZT2320 (WSS) chip (PnP setup)
262 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
263 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
264 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
266 Module supports up to 8 cards, PnP and autoprobe.
271 Module for sound cards based on Aztech AZF3328 PCI chip.
273 joystick - Enable joystick (default off)
275 Module supports up to 8 cards.
280 Module for video cards based on Bt87x chips.
282 digital_rate - Override the default digital rate (Hz)
283 load_all - Load the driver even if the card model isn't known
285 Module supports up to 8 cards.
287 Note: The default index value of this module is -2, i.e. the first
293 Module for Creative Audigy LS and SB Live 24bit
295 Module supports up to 8 cards.
301 Module for sound cards based on C-Media CMI8330 ISA chips.
303 wssport - port # for CMI8330 chip (WSS)
304 wssirq - IRQ # for CMI8330 chip (WSS)
305 wssdma - first DMA # for CMI8330 chip (WSS)
306 sbport - port # for CMI8330 chip (SB16)
307 sbirq - IRQ # for CMI8330 chip (SB16)
308 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
309 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
311 Module supports up to 8 cards and autoprobe.
316 Module for C-Media CMI8338 and 8738 PCI sound cards.
318 mpu_port - 0x300,0x310,0x320,0x330, 0 = disable (default)
319 fm_port - 0x388 (default), 0 = disable (default)
320 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
322 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
324 Module supports autoprobe and multiple chips (max 8).
329 Module for sound cards based on CS4231 ISA chips.
331 port - port # for CS4231 chip
332 mpu_port - port # for MPU-401 UART (optional), -1 = disable
333 irq - IRQ # for CS4231 chip
334 mpu_irq - IRQ # for MPU-401 UART
335 dma1 - first DMA # for CS4231 chip
336 dma2 - second DMA # for CS4231 chip
338 Module supports up to 8 cards. This module does not support autoprobe
339 thus main port must be specified!!! Other ports are optional.
341 The power-management is supported.
346 Module for sound cards based on CS4232/CS4232A ISA chips.
348 port - port # for CS4232 chip (PnP setup - 0x534)
349 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
350 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
351 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
352 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
353 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
354 dma1 - first DMA # for CS4232 chip (0,1,3)
355 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
356 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
358 Module supports up to 8 cards. This module does not support autoprobe
359 thus main port must be specified!!! Other ports are optional.
361 The power-management is supported.
366 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
367 CS4238B/CS4239 ISA chips.
369 port - port # for CS4236 chip (PnP setup - 0x534)
370 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
371 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
372 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
373 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
374 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
375 dma1 - first DMA # for CS4236 chip (0,1,3)
376 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
377 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
379 Module supports up to 8 cards. This module does not support autoprobe
380 (if ISA PnP is not used) thus main port and control port must be
381 specified!!! Other ports are optional.
383 The power-management is supported.
388 Module for Cirrus Logic CS4281 soundchip.
390 dual_codec - Secondary codec ID (0 = disable, default)
392 Module supports up to 8 cards.
394 The power-management is supported.
399 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
400 CS4624/CS4630/CS4280 PCI chips.
402 external_amp - Force to enable external amplifier.
403 thinkpad - Force to enable Thinkpad's CLKRUN control.
404 mmap_valid - Support OSS mmap mode (default = 0).
406 Module supports up to 8 cards and autoprobe.
407 Usually external amp and CLKRUN controls are detected automatically
408 from PCI sub vendor/device ids. If they don't work, give the options
411 The power-management is supported.
413 Module snd-cs5535audio
414 ----------------------
416 Module for multifunction CS5535 companion PCI device
418 Module supports up to 8 cards.
423 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
426 port - Port # (PnP setup)
427 mpu_port - Port # for MPU-401 (PnP setup)
428 fm_port - Port # for FM OPL-3 (PnP setup)
429 irq - IRQ # (PnP setup)
430 mpu_irq - IRQ # for MPU-401 (PnP setup)
431 dma8 - DMA # (PnP setup)
433 Module supports up to 8 cards. This module is enabled only with
439 Module for the dummy sound card. This "card" doesn't do any output
440 or input, but you may use this module for any application which
441 requires a sound card (like RealPlayer).
446 Module for EMU10K1/EMU10k2 based PCI sound cards.
447 * Sound Blaster Live!
448 * Sound Blaster PCI 512
449 * Emu APS (partially supported)
450 * Sound Blaster Audigy
452 extin - bitmap of available external inputs for FX8010 (see bellow)
453 extout - bitmap of available external outputs for FX8010 (see bellow)
454 seq_ports - allocated sequencer ports (4 by default)
455 max_synth_voices - limit of voices used for wavetable (64 by default)
456 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
457 given in MB unit. Default value is 128.
458 enable_ir - enable IR
460 Module supports up to 8 cards and autoprobe.
462 Input & Output configurations [extin/extout]
463 * Creative Card wo/Digital out [0x0003/0x1f03]
464 * Creative Card w/Digital out [0x0003/0x1f0f]
465 * Creative Card w/Digital CD in [0x000f/0x1f0f]
466 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
467 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
468 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
469 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
470 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
471 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
472 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
473 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
474 * Creative Card all ins and outs [0x3fff/0x7fff]
479 Module for Creative Emu10k1X (SB Live Dell OEM version)
481 Module supports up to 8 cards.
486 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
487 * SoundBlaster PCI 64
488 * SoundBlaster PCI 128
490 joystick - Enable joystick (default off)
492 Module supports up to 8 cards and autoprobe.
497 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
498 * SoundBlaster PCI 64
499 * SoundBlaster PCI 128
500 * SoundBlaster Vibra PCI
502 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
503 0 = disable (default), 1 = auto-detect
505 Module supports up to 8 cards and autoprobe.
510 Module for sound cards based on ESS ES968 chip (PnP only).
512 port - port # for ES968 (SB8) chip (PnP setup)
513 irq - IRQ # for ES968 (SB8) chip (PnP setup)
514 dma1 - DMA # for ES968 (SB8) chip (PnP setup)
516 Module supports up to 8 cards, PnP and autoprobe.
521 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
523 port - port # for ES-1688 chip (0x220,0x240,0x260)
524 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
525 irq - IRQ # for ES-1688 chip (5,7,9,10)
526 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
527 dma8 - DMA # for ES-1688 chip (0,1,3)
529 Module supports up to 8 cards and autoprobe (without MPU-401 port).
534 Module for ESS AudioDrive ES-18xx sound cards.
536 port - port # for ES-18xx chip (0x220,0x240,0x260)
537 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
538 fm_port - port # for FM (optional, not used)
539 irq - IRQ # for ES-18xx chip (5,7,9,10)
540 dma1 - first DMA # for ES-18xx chip (0,1,3)
541 dma2 - first DMA # for ES-18xx chip (0,1,3)
542 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
544 Module supports up to 8 cards ISA PnP and autoprobe (without MPU-401 port
545 if native ISA PnP routines are not used).
546 When dma2 is equal with dma1, the driver works as half-duplex.
548 The power-management is supported.
553 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
555 Module supports up to 8 cards and autoprobe.
560 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
562 total_bufsize - total buffer size in kB (1-4096kB)
563 pcm_substreams_p - playback channels (1-8, default=2)
564 pcm_substreams_c - capture channels (1-8, default=0)
565 clock - clock (0 = auto-detection)
566 use_pm - support the power-management (0 = off, 1 = on,
568 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
569 joystick - enable joystick (default off)
571 Module supports up to 8 cards and autoprobe.
573 The power-management is supported.
578 Module for ForteMedia FM801 based PCI sound cards.
580 tea575x_tuner - Enable TEA575x tuner
581 - 1 = MediaForte 256-PCS
582 - 2 = MediaForte 256-PCPR
583 - 3 = MediaForte 64-PCR
584 - High 16-bits are video (radio) device number + 1
585 - example: 0x10002 (MediaForte 256-PCPR, device 1)
587 Module supports up to 8 cards and autoprobe.
589 Module snd-gusclassic
590 ---------------------
592 Module for Gravis UltraSound Classic sound card.
594 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
595 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
596 dma1 - DMA # for GF1 chip (1,3,5,6,7)
597 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
598 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
599 voices - GF1 voices limit (14-32)
600 pcm_voices - reserved PCM voices
602 Module supports up to 8 cards and autoprobe.
604 Module snd-gusextreme
605 ---------------------
607 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
609 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
610 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
611 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
612 irq - IRQ # for ES-1688 chip (5,7,9,10)
613 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
614 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
615 dma8 - DMA # for ES-1688 chip (0,1,3)
616 dma1 - DMA # for GF1 chip (1,3,5,6,7)
617 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
618 voices - GF1 voices limit (14-32)
619 pcm_voices - reserved PCM voices
621 Module supports up to 8 cards and autoprobe (without MPU-401 port).
626 Module for Gravis UltraSound MAX sound card.
628 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
629 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
630 dma1 - DMA # for GF1 chip (1,3,5,6,7)
631 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
632 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
633 voices - GF1 voices limit (14-32)
634 pcm_voices - reserved PCM voices
636 Module supports up to 8 cards and autoprobe.
641 Module for Intel HD Audio (ICH6, ICH6M, ICH7), ATI SB450,
644 model - force the model name
645 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
647 This module supports one card and autoprobe.
649 Each codec may have a model table for different configurations.
650 If your machine isn't listed there, the default (usually minimal)
651 configuration is set up. You can pass "model=<name>" option to
652 specify a certain model in such a case. There are different
653 models depending on the codec chip.
655 Model name Description
656 ---------- -----------
658 3stack 3-jack in back and a headphone out
659 3stack-digout 3-jack in back, a HP out and a SPDIF out
660 5stack 5-jack in back, 2-jack in front
661 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
662 6stack 6-jack in back, 2-jack in front
663 6stack-digout 6-jack with a SPDIF out
665 z71v 3-jack (HP shared SPDIF)
669 test for testing/debugging purpose, almost all controls can be
670 adjusted. Appearing only when compiled with
675 fujitsu Fujitsu S7020
678 minimal 3-jack in back
679 min_fp 3-jack in back, 2-jack in front
680 full 6-jack in back, 2-jack in front
681 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
682 allout 5-jack in back, 2-jack in front, SPDIF out
683 auto auto-config reading BIOS (default)
685 If the default configuration doesn't work and one of the above
686 matches with your device, report it together with the PCI
687 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
688 ML (see the section "Links and Addresses").
690 Note 2: If you get click noises on output, try the module option
691 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
692 register value without FIFO size correction as the current
693 DMA pointer. position_fix=2 will make the driver to use
694 the position buffer instead of reading SD_LPIB register.
695 (Usually SD_LPLIB register is more accurate than the
701 Module for RME Hammerfall DSP audio interface(s)
703 Module supports up to 8 cards.
705 Note: The firmware data can be automatically loaded via hotplug
706 when CONFIG_FW_LOADER is set. Otherwise, you need to load
707 the firmware via hdsploader utility included in alsa-tools
709 The firmware data is found in alsa-firmware package.
711 Note: snd-page-alloc module does the job which snd-hammerfall-mem
712 module did formerly. It will allocate the buffers in advance
713 when any HDSP cards are found. To make the buffer
714 allocation sure, load snd-page-alloc module in the early
715 stage of boot sequence. See "Early Buffer Allocation"
721 Module for RME HDSP MADI board.
723 precise_ptr - Enable precise pointer, or disable.
724 line_outs_monitor - Send playback streams to analog outs by default.
725 enable_monitor - Enable Analog Out on Channel 63/64 by default.
727 See hdspm.txt for details.
732 Module for Envy24 (ICE1712) based PCI sound cards.
733 * MidiMan M Audio Delta 1010
734 * MidiMan M Audio Delta 1010LT
735 * MidiMan M Audio Delta DiO 2496
736 * MidiMan M Audio Delta 66
737 * MidiMan M Audio Delta 44
738 * MidiMan M Audio Delta 410
739 * MidiMan M Audio Audiophile 2496
745 * Hoontech SoundTrack DSP 24
746 * Hoontech SoundTrack DSP 24 Value
747 * Hoontech SoundTrack DSP 24 Media 7.1
748 * Event Electronics, EZ8
750 * Lionstracs, Mediastaton
752 model - Use the given board model, one of the following:
753 delta1010, dio2496, delta66, delta44, audiophile, delta410,
754 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
755 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
756 phase88, mediastation
757 omni - Omni I/O support for MidiMan M-Audio Delta44/66
758 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever)
759 in msec resolution, default value is 500 (0.5 sec)
761 Module supports up to 8 cards and autoprobe. Note: The consumer part
762 is not used with all Envy24 based cards (for example in the MidiMan Delta
765 Note: The supported board is detected by reading EEPROM or PCI
766 SSID (if EEPROM isn't available). You can override the
767 model by passing "model" module option in case that the
768 driver isn't configured properly or you want to try another
774 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
775 * MidiMan M Audio Revolution 7.1
777 * TerraTec Aureon 5.1 Sky
778 * TerraTec Aureon 7.1 Space
779 * TerraTec Aureon 7.1 Universe
782 * AudioTrak Prodigy 7.1
783 * AudioTrak Prodigy 192
785 * Albatron K8X800 Pro II
792 model - Use the given board model, one of the following:
793 revo71, amp2000, prodigy71, prodigy192, aureon51,
794 aureon71, universe, k8x800, phase22, phase28, ms300,
797 Module supports up to 8 cards and autoprobe.
799 Note: The supported board is detected by reading EEPROM or PCI
800 SSID (if EEPROM isn't available). You can override the
801 model by passing "model" module option in case that the
802 driver isn't configured properly or you want to try another
808 Module for AC'97 motherboards from Intel and compatibles.
809 * Intel i810/810E, i815, i820, i830, i84x, MX440
811 * NVidia NForce, NForce2
812 * AMD AMD768, AMD8111
815 ac97_clock - AC'97 codec clock base (0 = auto-detect)
816 ac97_quirk - AC'97 workaround for strange hardware
817 See "AC97 Quirk Option" section below.
818 buggy_irq - Enable workaround for buggy interrupts on some
819 motherboards (default yes on nForce chips,
821 buggy_semaphore - Enable workaround for hardwares with buggy
822 semaphores (e.g. on some ASUS laptops)
825 This module supports one chip and autoprobe.
827 Note: the latest driver supports auto-detection of chip clock.
828 if you still encounter too fast playback, specify the clock
829 explicitly via the module option "ac97_clock=41194".
831 Joystick/MIDI ports are not supported by this driver. If your
832 motherboard has these devices, use the ns558 or snd-mpu401
833 modules, respectively.
835 The power-management is supported.
840 Module for Intel ICH (i8x0) chipset MC97 modems.
842 ac97_clock - AC'97 codec clock base (0 = auto-detect)
844 This module supports one card and autoprobe.
846 Note: The default index value of this module is -2, i.e. the first
852 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
853 and other sound cards based on AMD InterWave (tm) chip.
855 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
856 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
857 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
858 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
859 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
860 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
861 pcm_voices - reserved PCM voices for the synthesizer (default 2)
862 effect - 1 = InterWave effects enable (default 0);
865 Module supports up to 8 cards, autoprobe and ISA PnP.
867 Module snd-interwave-stb
868 ------------------------
870 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
871 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
872 circuit for extended control of bass, treble and master volume.
874 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
875 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
876 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
877 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
878 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
879 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
880 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
881 pcm_voices - reserved PCM voices for the synthesizer (default 2)
882 effect - 1 = InterWave effects enable (default 0);
885 Module supports up to 8 cards, autoprobe and ISA PnP.
890 Module for Korg 1212 IO PCI card
892 Module supports up to 8 cards.
897 Module for Allegro/Maestro3 chips
899 external_amp - enable external amp (enabled by default)
900 amp_gpio - GPIO pin number for external amp (0-15) or
901 -1 for default pin (8 for allegro, 1 for
904 Module supports autoprobe and multiple chips (max 8).
906 Note: the binding of amplifier is dependent on hardware.
907 If there is no sound even though all channels are unmuted, try to
908 specify other gpio connection via amp_gpio option.
909 For example, a Panasonic notebook might need "amp_gpio=0x0d"
912 The power-management is supported.
917 Module for Digigram miXart8 sound cards.
919 Module supports multiple cards.
920 Note: One miXart8 board will be represented as 4 alsa cards.
921 See MIXART.txt for details.
923 When the driver is compiled as a module and the hotplug firmware
924 is supported, the firmware data is loaded via hotplug automatically.
925 Install the necessary firmware files in alsa-firmware package.
926 When no hotplug fw loader is available, you need to load the
927 firmware via mixartloader utility in alsa-tools package.
932 Module for MPU-401 UART devices.
934 port - port number or -1 (disable)
935 irq - IRQ number or -1 (disable)
936 pnp - PnP detection - 0 = disable, 1 = enable (default)
938 Module supports multiple devices (max 8) and PnP.
943 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
946 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
947 irq - IRQ # for MTPAV (7,5, default=7)
948 hwports - number of supported hardware ports, default=8.
950 Module supports only 1 card. This module has no enable option.
955 Module for NeoMagic NM256AV/ZX chips
957 playback_bufsize - max playback frame size in kB (4-128kB)
958 capture_bufsize - max capture frame size in kB (4-128kB)
959 force_ac97 - 0 or 1 (disabled by default)
960 buffer_top - specify buffer top address
961 use_cache - 0 or 1 (disabled by default)
962 vaio_hack - alias buffer_top=0x25a800
963 reset_workaround - enable AC97 RESET workaround for some laptops
964 reset_workaround2 - enable extended AC97 RESET workaround for some
967 This module supports one chip and autoprobe.
969 The power-management is supported.
971 Note: on some notebooks the buffer address cannot be detected
972 automatically, or causes hang-up during initialization.
973 In such a case, specify the buffer top address explicity via
976 Sony F250: buffer_top=0x25a800
977 Sony F270: buffer_top=0x272800
978 The driver supports only ac97 codec. It's possible to force
979 to initialize/use ac97 although it's not detected. In such a
980 case, use force_ac97=1 option - but *NO* guarantee whether it
983 Note: The NM256 chip can be linked internally with non-AC97
984 codecs. This driver supports only the AC97 codec, and won't work
985 with machines with other (most likely CS423x or OPL3SAx) chips,
986 even though the device is detected in lspci. In such a case, try
987 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
988 but some doesn't have ISA PnP. You'll need to specify isapnp=0
989 and proper hardware parameters in the case without ISA PnP.
991 Note: some laptops need a workaround for AC97 RESET. For the
992 known hardware like Dell Latitude LS and Sony PCG-F305, this
993 workaround is enabled automatically. For other laptops with a
994 hard freeze, you can try reset_workaround=1 option.
996 Note: Dell Latitude CSx laptops have another problem regarding
997 AC97 RESET. On these laptops, reset_workaround2 option is
998 turned on as default. This option is worth to try if the
999 previous reset_workaround option doesn't help.
1001 Note: This driver is really crappy. It's a porting from the
1002 OSS driver, which is a result of black-magic reverse engineering.
1003 The detection of codec will fail if the driver is loaded *after*
1004 X-server as described above. You might be able to force to load
1005 the module, but it may result in hang-up. Hence, make sure that
1006 you load this module *before* X if you encounter this kind of
1012 Module for Yamaha OPL3-SA2/SA3 sound cards.
1014 port - control port # for OPL3-SA chip (0x370)
1015 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1016 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1017 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1018 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1019 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1020 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1021 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1022 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1024 Module supports up to 8 cards and ISA PnP. This module does not support
1025 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1027 The power-management is supported.
1029 Module snd-opti92x-ad1848
1030 -------------------------
1032 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1033 Module works with OAK Mozart cards as well.
1035 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1036 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1037 fm_port - port # for OPL3 device (0x388)
1038 irq - IRQ # for WSS chip (5,7,9,10,11)
1039 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1040 dma1 - first DMA # for WSS chip (0,1,3)
1042 This module supports only one card, autoprobe and PnP.
1044 Module snd-opti92x-cs4231
1045 -------------------------
1047 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1049 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1050 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1051 fm_port - port # for OPL3 device (0x388)
1052 irq - IRQ # for WSS chip (5,7,9,10,11)
1053 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1054 dma1 - first DMA # for WSS chip (0,1,3)
1055 dma2 - second DMA # for WSS chip (0,1,3)
1057 This module supports only one card, autoprobe and PnP.
1062 Module for sound cards based on OPTi 82c93x chips.
1064 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1065 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1066 fm_port - port # for OPL3 device (0x388)
1067 irq - IRQ # for WSS chip (5,7,9,10,11)
1068 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1069 dma1 - first DMA # for WSS chip (0,1,3)
1070 dma2 - second DMA # for WSS chip (0,1,3)
1072 This module supports only one card, autoprobe and PnP.
1074 Module snd-powermac (on ppc only)
1075 ---------------------------------
1077 Module for PowerMac, iMac and iBook on-board soundchips
1079 enable_beep - enable beep using PCM (enabled as default)
1081 Module supports autoprobe a chip.
1083 Note: the driver may have problems regarding endianess.
1085 The power-management is supported.
1087 Module snd-pxa2xx-ac97 (on arm only)
1088 ------------------------------------
1090 Module for AC97 driver for the Intel PXA2xx chip
1092 For ARM architecture only.
1097 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1098 Prodif96 and Prodif Gold) sound cards.
1100 Module supports up to 8 cards.
1105 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1107 Module supports up to 8 cards.
1112 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1114 precise_ptr - Enable precise pointer (doesn't work reliably).
1117 Module supports up to 8 cards.
1119 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1120 module did formerly. It will allocate the buffers in advance
1121 when any RME9652 cards are found. To make the buffer
1122 allocation sure, load snd-page-alloc module in the early
1123 stage of boot sequence. See "Early Buffer Allocation"
1126 Module snd-sa11xx-uda1341 (on arm only)
1127 ---------------------------------------
1129 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1131 Module supports only one card.
1132 Module has no enable and index options.
1137 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1141 port - port # for SB DSP chip (0x220,0x240,0x260)
1142 irq - IRQ # for SB DSP chip (5,7,9,10)
1143 dma8 - DMA # for SB DSP chip (1,3)
1145 Module supports up to 8 cards and autoprobe.
1147 Module snd-sb16 and snd-sbawe
1148 -----------------------------
1150 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1151 SoundBlaster AWE 32 (PnP),
1152 SoundBlaster AWE 64 PnP
1154 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1155 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1156 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1157 (snd-sbawe module only)
1158 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1159 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1160 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1161 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1162 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1163 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1165 Module supports up to 8 cards, autoprobe and ISA PnP.
1167 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1168 disable 16bit DMA with dma16 = -1 module parameter.
1169 Also, all Sound Blaster 16 type cards can operate in 16-bit
1170 half duplex mode through 8-bit DMA channel by disabling their
1176 Module for Aztech Sound Galaxy sound card.
1178 sbport - Port # for SB16 interface (0x220,0x240)
1179 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1180 irq - IRQ # (7,9,10,11)
1183 Module supports up to 8 cards.
1188 Module for ENSONIQ SoundScape PnP cards.
1190 port - Port # (PnP setup)
1191 irq - IRQ # (PnP setup)
1192 mpu_irq - MPU-401 IRQ # (PnP setup)
1193 dma - DMA # (PnP setup)
1195 Module supports up to 8 cards. ISA PnP must be enabled.
1196 You need sscape_ctl tool in alsa-tools package for loading
1199 Module snd-sun-amd7930 (on sparc only)
1200 --------------------------------------
1202 Module for AMD7930 sound chips found on Sparcs.
1204 Module supports up to 8 cards.
1206 Module snd-sun-cs4231 (on sparc only)
1207 -------------------------------------
1209 Module for CS4231 sound chips found on Sparcs.
1211 Module supports up to 8 cards.
1213 Module snd-sun-dbri (on sparc only)
1214 -----------------------------------
1216 Module for DBRI sound chips found on Sparcs.
1218 Module supports up to 8 cards.
1220 Module snd-wavefront
1221 --------------------
1223 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1225 cs4232_pcm_port - Port # for CS4232 PCM interface.
1226 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1227 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1228 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1229 use_cs4232_midi - Use CS4232 MPU-401 interface
1230 (inaccessibly located inside your computer)
1231 ics2115_port - Port # for ICS2115
1232 ics2115_irq - IRQ # for ICS2115
1233 fm_port - FM OPL-3 Port #
1234 dma1 - DMA1 # for CS4232 PCM interface.
1235 dma2 - DMA2 # for CS4232 PCM interface.
1236 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1238 Module supports up to 8 cards and ISA PnP.
1240 Module snd-sonicvibes
1241 ---------------------
1243 Module for S3 SonicVibes PCI sound cards.
1244 * PINE Schubert 32 PCI
1246 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1247 - SoundCard must have onboard SRAM for this.
1248 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1250 Module supports up to 8 cards and autoprobe.
1252 Module snd-serial-u16550
1253 ------------------------
1255 Module for UART16550A serial MIDI ports.
1257 port - port # for UART16550A chip
1258 irq - IRQ # for UART16550A chip, -1 = poll mode
1259 speed - speed in bauds (9600,19200,38400,57600,115200)
1261 base - base for divisor in bauds (57600,115200,230400,460800)
1263 outs - number of MIDI ports in a serial port (1-4)
1265 adaptor - Type of adaptor.
1266 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1267 3 = MS-124W M/B, 4 = Generic
1269 Module supports up to 8 cards. This module does not support autoprobe
1270 thus the main port must be specified!!! Other options are optional.
1275 Module for Trident 4DWave DX/NX sound cards.
1276 * Best Union Miss Melody 4DWave PCI
1278 * Warpspeed ONSpeed 4DWave PCI
1281 * CHIC True Sound 4Dwave
1282 * Shark Predator4D-PCI
1283 * Jaton SonicWave 4D
1285 pcm_channels - max channels (voices) reserved for PCM
1286 wavetable_size - max wavetable size in kB (4-?kb)
1288 Module supports up to 8 cards and autoprobe.
1290 The power-management is supported.
1292 Module snd-usb-audio
1293 --------------------
1295 Module for USB audio and USB MIDI devices.
1297 vid - Vendor ID for the device (optional)
1298 pid - Product ID for the device (optional)
1300 This module supports up to 8 cards, autoprobe and hotplugging.
1302 Module snd-usb-usx2y
1303 --------------------
1305 Module for Tascam USB US-122, US-224 and US-428 devices.
1307 This module supports up to 8 cards, autoprobe and hotplugging.
1309 Note: you need to load the firmware via usx2yloader utility included
1310 in alsa-tools and alsa-firmware packages.
1315 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1316 8233A, 8233C, 8235, 8237 (south) bridge.
1318 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1320 joystick - Enable joystick (default off) [VIA686A/686B only]
1321 ac97_clock - AC'97 codec clock base (default 48000Hz)
1322 dxs_support - support DXS channels,
1323 0 = auto (default), 1 = enable, 2 = disable,
1324 3 = 48k only, 4 = no VRA, 5 = enable any sample
1325 rate and different sample rates on different
1327 [VIA8233/C, 8235, 8237 only]
1328 ac97_quirk - AC'97 workaround for strange hardware
1329 See "AC97 Quirk Option" section below.
1331 This module supports one chip and autoprobe.
1333 Note: on some SMP motherboards like MSI 694D the interrupts might
1334 not be generated properly. In such a case, please try to
1335 set the SMP (or MPS) version on BIOS to 1.1 instead of
1336 default value 1.4. Then the interrupt number will be
1337 assigned under 15. You might also upgrade your BIOS.
1339 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1340 channels as the first PCM. On these channels, up to 4
1341 streams can be played at the same time, and the controller
1342 can perform sample rate conversion with separate rates for
1344 As default (dxs_support = 0), 48k fixed rate is chosen
1345 except for the known devices since the output is often
1346 noisy except for 48k on some mother boards due to the
1348 Please try once dxs_support=5 and if it works on other
1349 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1350 know the PCI subsystem vendor/device id's (output of
1352 If dxs_support=5 does not work, try dxs_support=4; if it
1353 doesn't work too, try dxs_support=1. (dxs_support=1 is
1354 usually for old motherboards. The correct implemented
1355 board should work with 4 or 5.) If it still doesn't
1356 work and the default setting is ok, dxs_support=3 is the
1357 right choice. If the default setting doesn't work at all,
1358 try dxs_support=2 to disable the DXS channels.
1359 In any cases, please let us know the result and the
1360 subsystem vendor/device ids. See "Links and Addresses"
1363 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1364 additionally. The mpu_port option is for VIA686 chips only.
1366 Module snd-via82xx-modem
1367 ------------------------
1369 Module for VIA82xx AC97 modem
1371 ac97_clock - AC'97 codec clock base (default 48000Hz)
1373 This module supports one card and autoprobe.
1375 Note: The default index value of this module is -2, i.e. the first
1381 Module for virtual rawmidi devices.
1382 This module creates virtual rawmidi devices which communicate
1383 to the corresponding ALSA sequencer ports.
1385 midi_devs - MIDI devices # (1-8, default=4)
1387 Module supports up to 8 cards.
1392 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1394 mic - Enable Microphone on V222 Mic (NYI)
1395 ibl - Capture IBL size. (default = 0, minimum size)
1397 Module supports up to 8 cards.
1399 When the driver is compiled as a module and the hotplug firmware
1400 is supported, the firmware data is loaded via hotplug automatically.
1401 Install the necessary firmware files in alsa-firmware package.
1402 When no hotplug fw loader is available, you need to load the
1403 firmware via vxloader utility in alsa-tools package. To invoke
1404 vxloader automatically, add the following to /etc/modprobe.conf
1406 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1408 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1409 /etc/modules.conf, instead.)
1410 IBL size defines the interrupts period for PCM. The smaller size
1411 gives smaller latency but leads to more CPU consumption, too.
1412 The size is usually aligned to 126. As default (=0), the smallest
1413 size is chosen. The possible IBL values can be found in
1414 /proc/asound/cardX/vx-status proc file.
1419 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
1421 ibl - Capture IBL size. (default = 0, minimum size)
1423 Module supports up to 8 cards. The module is compiled only when
1424 PCMCIA is supported on kernel.
1426 With the older 2.6.x kernel, to activate the driver via the card
1427 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
1428 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
1429 longer require a config file.
1431 When the driver is compiled as a module and the hotplug firmware
1432 is supported, the firmware data is loaded via hotplug automatically.
1433 Install the necessary firmware files in alsa-firmware package.
1434 When no hotplug fw loader is available, you need to load the
1435 firmware via vxloader utility in alsa-tools package.
1437 About capture IBL, see the description of snd-vx222 module.
1439 Note: the driver is build only when CONFIG_ISA is set.
1441 Note2: snd-vxp440 driver is merged to snd-vxpocket driver since
1447 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
1449 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
1450 1 (auto-detect for YMF744/754 only)
1451 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
1452 1 (auto-detect for YMF744/754 only)
1453 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
1455 rear_switch - enable shared rear/line-in switch (bool)
1457 Module supports autoprobe and multiple chips (max 8).
1459 The power-management is supported.
1461 Module snd-pdaudiocf
1462 --------------------
1464 Module for Sound Core PDAudioCF sound card.
1466 Note: the driver is build only when CONFIG_ISA is set.
1472 The ac97_quirk option is used to enable/override the workaround for
1473 specific devices on drivers for on-board AC'97 controllers like
1474 snd-intel8x0. Some hardware have swapped output pins between Master
1475 and Headphone, or Surround (thanks to confusion of AC'97
1476 specifications from version to version :-)
1478 The driver provides the auto-detection of known problematic devices,
1479 but some might be unknown or wrongly detected. In such a case, pass
1480 the proper value with this option.
1482 The following strings are accepted:
1483 - default Don't override the default setting
1484 - none Disable the quirk
1485 - hp_only Bind Master and Headphone controls as a single control
1486 - swap_hp Swap headphone and master controls
1487 - swap_surround Swap master and surround controls
1488 - ad_sharing For AD1985, turn on OMS bit and use headphone
1489 - alc_jack For ALC65x, turn on the jack sense mode
1490 - inv_eapd Inverted EAPD implementation
1491 - mute_led Bind EAPD bit for turning on/off mute LED
1493 For backward compatibility, the corresponding integer value -1, 0,
1494 ... are accepted, too.
1496 For example, if "Master" volume control has no effect on your device
1497 but only "Headphone" does, pass ac97_quirk=hp_only module option.
1500 Configuring Non-ISAPNP Cards
1501 ============================
1503 When the kernel is configured with ISA-PnP support, the modules
1504 supporting the isapnp cards will have module options "isapnp".
1505 If this option is set, *only* the ISA-PnP devices will be probed.
1506 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
1507 together with the proper i/o and irq configuration.
1509 When the kernel is configured without ISA-PnP support, isapnp option
1510 will be not built in.
1513 Module Autoloading Support
1514 ==========================
1516 The ALSA drivers can be loaded automatically on demand by defining
1517 module aliases. The string 'snd-card-%1' is requested for ALSA native
1518 devices where %i is sound card number from zero to seven.
1520 To auto-load an ALSA driver for OSS services, define the string
1521 'sound-slot-%i' where %i means the slot number for OSS, which
1522 corresponds to the card index of ALSA. Usually, define this
1523 as the same card module.
1525 An example configuration for a single emu10k1 card is like below:
1526 ----- /etc/modprobe.conf
1527 alias snd-card-0 snd-emu10k1
1528 alias sound-slot-0 snd-emu10k1
1529 ----- /etc/modprobe.conf
1531 The available number of auto-loaded sound cards depends on the module
1532 option "cards_limit" of snd module. As default it's set to 1.
1533 To enable the auto-loading of multiple cards, specify the number of
1534 sound cards in that option.
1536 When multiple cards are available, it'd better to specify the index
1537 number for each card via module option, too, so that the order of
1538 cards is kept consistent.
1540 An example configuration for two sound cards is like below:
1542 ----- /etc/modprobe.conf
1544 options snd cards_limit=2
1545 alias snd-card-0 snd-interwave
1546 alias snd-card-1 snd-ens1371
1547 options snd-interwave index=0
1548 options snd-ens1371 index=1
1550 alias sound-slot-0 snd-interwave
1551 alias sound-slot-1 snd-ens1371
1552 ----- /etc/moprobe.conf
1554 In this example, the interwave card is always loaded as the first card
1555 (index 0) and ens1371 as the second (index 1).
1558 ALSA PCM devices to OSS devices mapping
1559 =======================================
1561 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
1562 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
1563 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
1564 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
1565 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
1566 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
1567 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
1568 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
1569 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
1571 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
1572 sound card number and second means device number. The ALSA devices
1573 have either 'c' or 'p' suffix indicating the direction, capture and
1574 playback, respectively.
1576 Please note that the device mapping above may be varied via the module
1577 options of snd-pcm-oss module.
1583 The ALSA driver fully supports the devfs extension.
1584 You should add lines below to your devfsd.conf file:
1586 LOOKUP snd MODLOAD ACTION snd
1587 REGISTER ^sound/.* PERMISSIONS root.audio 660
1588 REGISTER ^snd/.* PERMISSIONS root.audio 660
1590 Warning: These lines assume that you have the audio group in your system.
1591 Otherwise replace audio word with another group name (root for
1595 Proc interfaces (/proc/asound)
1596 ==============================
1598 /proc/asound/card#/pcm#[cp]/oss
1599 -------------------------------
1600 String "erase" - erase all additional informations about OSS applications
1601 String "<app_name> <fragments> <fragment_size> [<options>]"
1603 <app_name> - name of application with (higher priority) or without path
1604 <fragments> - number of fragments or zero if auto
1605 <fragment_size> - size of fragment in bytes or zero if auto
1606 <options> - optional parameters
1607 - disable the application tries to open a pcm device for
1608 this channel but does not want to use it.
1609 (Cause a bug or mmap needs)
1610 It's good for Quake etc...
1611 - direct don't use plugins
1612 - block force block mode (rvplayer)
1613 - non-block force non-block mode
1614 - whole-frag write only whole fragments (optimization affecting
1616 - no-silence do not fill silence ahead to avoid clicks
1617 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
1618 instead of filled blocks
1620 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
1621 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
1622 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
1625 Early Buffer Allocation
1626 =======================
1628 Some drivers (e.g. hdsp) require the large contiguous buffers, and
1629 sometimes it's too late to find such spaces when the driver module is
1630 actually loaded due to memory fragmentation. You can pre-allocate the
1631 PCM buffers by loading snd-page-alloc module and write commands to its
1632 proc file in prior, for example, in the early boot stage like
1633 /etc/init.d/*.local scripts.
1635 Reading the proc file /proc/drivers/snd-page-alloc shows the current
1636 usage of page allocation. In writing, you can send the following
1637 commands to the snd-page-alloc driver:
1639 - add VENDOR DEVICE MASK SIZE BUFFERS
1641 VENDOR and DEVICE are PCI vendor and device IDs. They take
1642 integer numbers (0x prefix is needed for the hex).
1643 MASK is the PCI DMA mask. Pass 0 if not restricted.
1644 SIZE is the size of each buffer to allocate. You can pass
1645 k and m suffix for KB and MB. The max number is 16MB.
1646 BUFFERS is the number of buffers to allocate. It must be greater
1647 than 0. The max number is 4.
1651 This will erase the all pre-allocated buffers which are not in
1658 ALSA project homepage
1659 http://www.alsa-project.org
1661 ALSA Bug Tracking System
1662 https://bugtrack.alsa-project.org/bugs/
1665 mailto:alsa-devel@lists.sourceforge.net
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