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2 Advanced Linux Sound Architecture - Driver
3 ==========================================
4 Configuration guide
7 Kernel Configuration
8 ====================
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
27 using isapnptools.
30 Creating ALSA devices
31 =====================
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'.
38 Module parameters
39 =================
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.
47 Module snd
48 ----------
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
54 - Default: 116
55 cards_limit
56 - limiting card index for auto-loading (1-8)
57 - Default: 1
58 - For auto-loading more than one card, specify this
59 option together with snd-card-X aliases.
60 device_mode
61 - permission mask for dynamic sound device filesystem
62 - This is available only when DEVFS is enabled
63 - Default: 0666
64 - E.g.: device_mode=0660
67 Module snd-pcm-oss
68 ------------------
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.
74 - Default: 0
75 adsp_map - PCM device number maps assigned to the 2st OSS device.
76 - Default: 1
77 nonblock_open
78 - Don't block opening busy PCM devices.
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).
91 Module snd-rawmidi
92 ------------------
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.
98 - Default: 0
99 amidi_map - MIDI device number maps assigned to the 2st OSS device.
100 - Default: 1
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
112 - Default: -1
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
119 identifying the card
120 enable - enable card
121 - Default: enabled, for PCI and ISA PnP cards
123 Module snd-ad1816a
124 ------------------
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)
136 Module supports up to 8 cards, autoprobe and PnP.
138 Module snd-ad1848
139 -----------------
141 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
143 port - port # for AD1848 chip
144 irq - IRQ # for AD1848 chip
145 dma1 - DMA # for AD1848 chip (0,1,3)
147 Module supports up to 8 cards. This module does not support autoprobe
148 thus main port must be specified!!! Other ports are optional.
150 Module snd-ali5451
151 ------------------
153 Module for ALi M5451 PCI chip.
155 pcm_channels - Number of hardware channels assigned for PCM
156 spdif - Support SPDIF I/O
157 - Default: disabled
159 Module supports autoprobe and multiple chips (max 8).
161 The power-management is supported.
163 Module snd-als100
164 -----------------
166 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
168 port - port # for ALS100 (SB16) chip (PnP setup)
169 irq - IRQ # for ALS100 (SB16) chip (PnP setup)
170 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)
171 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)
172 mpu_port - port # for MPU-401 UART (PnP setup)
173 mpu_irq - IRQ # for MPU-401 (PnP setup)
174 fm_port - port # for OPL3 FM (PnP setup)
176 Module supports up to 8 cards, autoprobe and PnP.
178 Module snd-als4000
179 ------------------
181 Module for sound cards based on Avance Logic ALS4000 PCI chip.
183 joystick_port - port # for legacy joystick support.
184 0 = disabled (default), 1 = auto-detect
186 Module supports up to 8 cards, autoprobe and PnP.
188 Module snd-atiixp
189 -----------------
191 Module for ATI IXP 150/200/250 AC97 controllers.
193 ac97_clock - AC'97 clock (defalut = 48000)
194 ac97_quirk - AC'97 workaround for strange hardware
195 See the description of intel8x0 module for details.
196 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
198 This module supports up to 8 cards and autoprobe.
200 Module snd-atiixp-modem
201 -----------------------
203 Module for ATI IXP 150/200/250 AC97 modem controllers.
205 Module supports up to 8 cards.
207 Note: The default index value of this module is -2, i.e. the first
208 slot is excluded.
210 Module snd-au8810, snd-au8820, snd-au8830
211 -----------------------------------------
213 Module for Aureal Vortex, Vortex2 and Advantage device.
215 pcifix - Control PCI workarounds
216 0 = Disable all workarounds
217 1 = Force the PCI latency of the Aureal card to 0xff
218 2 = Force the Extend PCI#2 Internal Master for Efficient
219 Handling of Dummy Requests on the VIA KT133 AGP Bridge
220 3 = Force both settings
221 255 = Autodetect what is required (default)
223 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
224 EQ, mpu401, gameport. A3D and wavetable support are still in development.
225 Development and reverse engineering work is being coordinated at
226 http://savannah.nongnu.org/projects/openvortex/
227 SPDIF output has a copy of the AC97 codec output, unless you use the
228 "spdif" pcm device, which allows raw data passthru.
229 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
230 Advantage.
232 Note: Some ALSA mixer applicactions don't handle the SPDIF samplerate
233 control correctly. If you have problems regarding this, try
234 another ALSA compliant mixer (alsamixer works).
236 Module snd-azt2320
237 ------------------
239 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
241 port - port # for AZT2320 chip (PnP setup)
242 wss_port - port # for WSS (PnP setup)
243 mpu_port - port # for MPU-401 UART (PnP setup)
244 fm_port - FM port # for AZT2320 chip (PnP setup)
245 irq - IRQ # for AZT2320 (WSS) chip (PnP setup)
246 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
247 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
248 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
250 Module supports up to 8 cards, PnP and autoprobe.
252 Module snd-azt3328
253 ------------------
255 Module for sound cards based on Aztech AZF3328 PCI chip.
257 joystick - Enable joystick (default off)
259 Module supports up to 8 cards.
261 Module snd-bt87x
262 ----------------
264 Module for video cards based on Bt87x chips.
266 digital_rate - Override the default digital rate (Hz)
267 load_all - Load the driver even if the card model isn't known
269 Module supports up to 8 cards.
271 Note: The default index value of this module is -2, i.e. the first
272 slot is excluded.
274 Module snd-ca0106
275 -----------------
277 Module for Creative Audigy LS and SB Live 24bit
279 Module supports up to 8 cards.
282 Module snd-cmi8330
283 ------------------
285 Module for sound cards based on C-Media CMI8330 ISA chips.
287 wssport - port # for CMI8330 chip (WSS)
288 wssirq - IRQ # for CMI8330 chip (WSS)
289 wssdma - first DMA # for CMI8330 chip (WSS)
290 sbport - port # for CMI8330 chip (SB16)
291 sbirq - IRQ # for CMI8330 chip (SB16)
292 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
293 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
295 Module supports up to 8 cards and autoprobe.
297 Module snd-cmipci
298 -----------------
300 Module for C-Media CMI8338 and 8738 PCI sound cards.
302 mpu_port - 0x300,0x310,0x320,0x330, 0 = disable (default)
303 fm_port - 0x388 (default), 0 = disable (default)
304 soft_ac3 - Sofware-conversion of raw SPDIF packets (model 033 only)
305 (default = 1)
306 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
308 Module supports autoprobe and multiple chips (max 8).
310 Module snd-cs4231
311 -----------------
313 Module for sound cards based on CS4231 ISA chips.
315 port - port # for CS4231 chip
316 mpu_port - port # for MPU-401 UART (optional), -1 = disable
317 irq - IRQ # for CS4231 chip
318 mpu_irq - IRQ # for MPU-401 UART
319 dma1 - first DMA # for CS4231 chip
320 dma2 - second DMA # for CS4231 chip
322 Module supports up to 8 cards. This module does not support autoprobe
323 thus main port must be specified!!! Other ports are optional.
325 The power-management is supported.
327 Module snd-cs4232
328 -----------------
330 Module for sound cards based on CS4232/CS4232A ISA chips.
332 port - port # for CS4232 chip (PnP setup - 0x534)
333 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
334 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
335 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
336 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
337 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
338 dma1 - first DMA # for CS4232 chip (0,1,3)
339 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
340 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
342 Module supports up to 8 cards. This module does not support autoprobe
343 thus main port must be specified!!! Other ports are optional.
345 The power-management is supported.
347 Module snd-cs4236
348 -----------------
350 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
351 CS4238B/CS4239 ISA chips.
353 port - port # for CS4236 chip (PnP setup - 0x534)
354 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
355 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
356 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
357 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
358 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
359 dma1 - first DMA # for CS4236 chip (0,1,3)
360 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
361 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
363 Module supports up to 8 cards. This module does not support autoprobe
364 (if ISA PnP is not used) thus main port and control port must be
365 specified!!! Other ports are optional.
367 The power-management is supported.
369 Module snd-cs4281
370 -----------------
372 Module for Cirrus Logic CS4281 soundchip.
374 dual_codec - Secondary codec ID (0 = disable, default)
376 Module supports up to 8 cards.
378 The power-management is supported.
380 Module snd-cs46xx
381 -----------------
383 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
384 CS4624/CS4630/CS4280 PCI chips.
386 external_amp - Force to enable external amplifer.
387 thinkpad - Force to enable Thinkpad's CLKRUN control.
388 mmap_valid - Support OSS mmap mode (default = 0).
390 Module supports up to 8 cards and autoprobe.
391 Usually external amp and CLKRUN controls are detected automatically
392 from PCI sub vendor/device ids. If they don't work, give the options
393 above explicitly.
395 The power-management is supported.
397 Module snd-dt019x
398 -----------------
400 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
401 only)
403 port - Port # (PnP setup)
404 mpu_port - Port # for MPU-401 (PnP setup)
405 fm_port - Port # for FM OPL-3 (PnP setup)
406 irq - IRQ # (PnP setup)
407 mpu_irq - IRQ # for MPU-401 (PnP setup)
408 dma8 - DMA # (PnP setup)
410 Module supports up to 8 cards. This module is enabled only with
411 ISA PnP support.
413 Module snd-dummy
414 ----------------
416 Module for the dummy sound card. This "card" doesn't do any output
417 or input, but you may use this module for any application which
418 requires a sound card (like RealPlayer).
420 Module snd-emu10k1
421 ------------------
423 Module for EMU10K1/EMU10k2 based PCI sound cards.
424 * Sound Blaster Live!
425 * Sound Blaster PCI 512
426 * Emu APS (partially supported)
427 * Sound Blaster Audigy
429 extin - bitmap of available external inputs for FX8010 (see bellow)
430 extout - bitmap of available external outputs for FX8010 (see bellow)
431 seq_ports - allocated sequencer ports (4 by default)
432 max_synth_voices - limit of voices used for wavetable (64 by default)
433 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
434 given in MB unit. Default value is 128.
435 enable_ir - enable IR
437 Module supports up to 8 cards and autoprobe.
439 Input & Output configurations [extin/extout]
440 * Creative Card wo/Digital out [0x0003/0x1f03]
441 * Creative Card w/Digital out [0x0003/0x1f0f]
442 * Creative Card w/Digital CD in [0x000f/0x1f0f]
443 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
444 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
445 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
446 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
447 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
448 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
449 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
450 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
451 * Creative Card all ins and outs [0x3fff/0x7fff]
453 Module snd-emu10k1x
454 -------------------
456 Module for Creative Emu10k1X (SB Live Dell OEM version)
458 Module supports up to 8 cards.
460 Module snd-ens1370
461 ------------------
463 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
464 * SoundBlaster PCI 64
465 * SoundBlaster PCI 128
467 joystick - Enable joystick (default off)
469 Module supports up to 8 cards and autoprobe.
471 Module snd-ens1371
472 ------------------
474 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
475 * SoundBlaster PCI 64
476 * SoundBlaster PCI 128
477 * SoundBlaster Vibra PCI
479 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
480 0 = disable (default), 1 = auto-detect
482 Module supports up to 8 cards and autoprobe.
484 Module snd-es968
485 ----------------
487 Module for sound cards based on ESS ES968 chip (PnP only).
489 port - port # for ES968 (SB8) chip (PnP setup)
490 irq - IRQ # for ES968 (SB8) chip (PnP setup)
491 dma1 - DMA # for ES968 (SB8) chip (PnP setup)
493 Module supports up to 8 cards, PnP and autoprobe.
495 Module snd-es1688
496 -----------------
498 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
500 port - port # for ES-1688 chip (0x220,0x240,0x260)
501 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
502 irq - IRQ # for ES-1688 chip (5,7,9,10)
503 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
504 dma8 - DMA # for ES-1688 chip (0,1,3)
506 Module supports up to 8 cards and autoprobe (without MPU-401 port).
508 Module snd-es18xx
509 -----------------
511 Module for ESS AudioDrive ES-18xx sound cards.
513 port - port # for ES-18xx chip (0x220,0x240,0x260)
514 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
515 fm_port - port # for FM (optional, not used)
516 irq - IRQ # for ES-18xx chip (5,7,9,10)
517 dma1 - first DMA # for ES-18xx chip (0,1,3)
518 dma2 - first DMA # for ES-18xx chip (0,1,3)
519 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
521 Module supports up to 8 cards ISA PnP and autoprobe (without MPU-401 port
522 if native ISA PnP routines are not used).
523 When dma2 is equal with dma1, the driver works as half-duplex.
525 The power-management is supported.
527 Module snd-es1938
528 -----------------
530 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
532 Module supports up to 8 cards and autoprobe.
534 Module snd-es1968
535 -----------------
537 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
539 total_bufsize - total buffer size in kB (1-4096kB)
540 pcm_substreams_p - playback channels (1-8, default=2)
541 pcm_substreams_c - capture channels (1-8, default=0)
542 clock - clock (0 = auto-detection)
543 use_pm - support the power-management (0 = off, 1 = on,
544 2 = auto (default))
545 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
546 joystick - enable joystick (default off)
548 Module supports up to 8 cards and autoprobe.
550 The power-management is supported.
552 Module snd-fm801
553 ----------------
555 Module for ForteMedia FM801 based PCI sound cards.
557 tea575x_tuner - Enable TEA575x tuner
558 - 1 = MediaForte 256-PCS
559 - 2 = MediaForte 256-PCPR
560 - 3 = MediaForte 64-PCR
561 - High 16-bits are video (radio) device number + 1
562 - example: 0x10002 (MediaForte 256-PCPR, device 1)
564 Module supports up to 8 cards and autoprobe.
566 Module snd-gusclassic
567 ---------------------
569 Module for Gravis UltraSound Classic sound card.
571 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
572 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
573 dma1 - DMA # for GF1 chip (1,3,5,6,7)
574 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
575 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
576 voices - GF1 voices limit (14-32)
577 pcm_voices - reserved PCM voices
579 Module supports up to 8 cards and autoprobe.
581 Module snd-gusextreme
582 ---------------------
584 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
586 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
587 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
588 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
589 irq - IRQ # for ES-1688 chip (5,7,9,10)
590 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
591 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
592 dma8 - DMA # for ES-1688 chip (0,1,3)
593 dma1 - DMA # for GF1 chip (1,3,5,6,7)
594 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
595 voices - GF1 voices limit (14-32)
596 pcm_voices - reserved PCM voices
598 Module supports up to 8 cards and autoprobe (without MPU-401 port).
600 Module snd-gusmax
601 -----------------
603 Module for Gravis UltraSound MAX sound card.
605 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
606 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
607 dma1 - DMA # for GF1 chip (1,3,5,6,7)
608 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
609 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
610 voices - GF1 voices limit (14-32)
611 pcm_voices - reserved PCM voices
613 Module supports up to 8 cards and autoprobe.
615 Module snd-hda-intel
616 --------------------
618 Module for Intel HD Audio (ICH6, ICH6M, ICH7)
620 model - force the model name
622 Module supports up to 8 cards.
624 Each codec may have a model table for different configurations.
625 If your machine isn't listed there, the default (usually minimal)
626 configuration is set up. You can pass "model=<name>" option to
627 specify a certain model in such a case. There are different
628 models depending on the codec chip.
630 Model name Description
631 ---------- -----------
632 ALC880
633 3stack 3-jack in back and a headphone out
634 3stack-digout 3-jack in back, a HP out and a SPDIF out
635 5stack 5-jack in back, 2-jack in front
636 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
637 w810 3-jack
639 CMI9880
640 minimal 3-jack in back
641 min_fp 3-jack in back, 2-jack in front
642 full 6-jack in back, 2-jack in front
643 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
644 allout 5-jack in back, 2-jack in front, SPDIF out
646 Module snd-hdsp
647 ---------------
649 Module for RME Hammerfall DSP audio interface(s)
651 Module supports up to 8 cards.
653 Note: The firmware data can be automatically loaded via hotplug
654 when CONFIG_FW_LOADER is set. Otherwise, you need to load
655 the firmware via hdsploader utility included in alsa-tools
656 package.
657 The firmware data is found in alsa-firmware package.
659 Note: snd-page-alloc module does the job which snd-hammerfall-mem
660 module did formerly. It will allocate the buffers in advance
661 when any HDSP cards are found. To make the buffer
662 allocation sure, load snd-page-alloc module in the early
663 stage of boot sequence.
665 Module snd-ice1712
666 ------------------
668 Module for Envy24 (ICE1712) based PCI sound cards.
669 * MidiMan M Audio Delta 1010
670 * MidiMan M Audio Delta 1010LT
671 * MidiMan M Audio Delta DiO 2496
672 * MidiMan M Audio Delta 66
673 * MidiMan M Audio Delta 44
674 * MidiMan M Audio Delta 410
675 * MidiMan M Audio Audiophile 2496
676 * TerraTec EWS 88MT
677 * TerraTec EWS 88D
678 * TerraTec EWX 24/96
679 * TerraTec DMX 6Fire
680 * Hoontech SoundTrack DSP 24
681 * Hoontech SoundTrack DSP 24 Value
682 * Hoontech SoundTrack DSP 24 Media 7.1
683 * Digigram VX442
685 model - Use the given board model, one of the following:
686 delta1010, dio2496, delta66, delta44, audiophile, delta410,
687 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
688 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8
689 omni - Omni I/O support for MidiMan M-Audio Delta44/66
690 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever)
691 in msec resolution, default value is 500 (0.5 sec)
693 Module supports up to 8 cards and autoprobe. Note: The consumer part
694 is not used with all Envy24 based cards (for example in the MidiMan Delta
695 serie).
697 Module snd-ice1724
698 ------------------
700 Module for Envy24HT (VT/ICE1724) based PCI sound cards.
701 * MidiMan M Audio Revolution 7.1
702 * AMP Ltd AUDIO2000
703 * TerraTec Aureon Sky-5.1, Space-7.1
705 model - Use the given board model, one of the following:
706 revo71, amp2000, prodigy71, aureon51, aureon71,
707 k8x800
709 Module supports up to 8 cards and autoprobe.
711 Module snd-intel8x0
712 -------------------
714 Module for AC'97 motherboards from Intel and compatibles.
715 * Intel i810/810E, i815, i820, i830, i84x, MX440
716 * SiS 7012 (SiS 735)
717 * NVidia NForce, NForce2
718 * AMD AMD768, AMD8111
719 * ALi m5455
721 ac97_clock - AC'97 codec clock base (0 = auto-detect)
722 ac97_quirk - AC'97 workaround for strange hardware
723 The following strings are accepted:
724 default = don't override the default setting
725 disable = disable the quirk
726 hp_only = use headphone control as master
727 swap_hp = swap headphone and master controls
728 swap_surround = swap master and surround controls
729 ad_sharing = for AD1985, turn on OMS bit and use headphone
730 alc_jack = for ALC65x, turn on the jack sense mode
731 inv_eapd = inverted EAPD implementation
732 mute_led = bind EAPD bit for turning on/off mute LED
733 For backward compatibility, the corresponding integer
734 value -1, 0, ... are accepted, too.
735 buggy_irq - Enable workaround for buggy interrupts on some
736 motherboards (default off)
738 Module supports autoprobe and multiple bus-master chips (max 8).
740 Note: the latest driver supports auto-detection of chip clock.
741 if you still encounter too fast playback, specify the clock
742 explicitly via the module option "ac97_clock=41194".
744 Joystick/MIDI ports are not supported by this driver. If your
745 motherboard has these devices, use the ns558 or snd-mpu401
746 modules, respectively.
748 The ac97_quirk option is used to enable/override the workaround
749 for specific devices. Some hardware have swapped output pins
750 between Master and Headphone, or Surround. The driver provides
751 the auto-detection of known problematic devices, but some might
752 be unknown or wrongly detected. In such a case, pass the proper
753 value with this option.
755 The power-management is supported.
757 Module snd-intel8x0m
758 --------------------
760 Module for Intel ICH (i8x0) chipset MC97 modems.
762 ac97_clock - AC'97 codec clock base (0 = auto-detect)
764 This module supports up to 8 cards and autoprobe.
766 Note: The default index value of this module is -2, i.e. the first
767 slot is excluded.
769 Module snd-interwave
770 --------------------
772 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
773 and other sound cards based on AMD InterWave (tm) chip.
775 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
776 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
777 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
778 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
779 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
780 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
781 pcm_voices - reserved PCM voices for the synthesizer (default 2)
782 effect - 1 = InterWave effects enable (default 0);
783 requires 8 voices
785 Module supports up to 8 cards, autoprobe and ISA PnP.
787 Module snd-interwave-stb
788 ------------------------
790 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
791 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
792 circuit for extended control of bass, treble and master volume.
794 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
795 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
796 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
797 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
798 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
799 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
800 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
801 pcm_voices - reserved PCM voices for the synthesizer (default 2)
802 effect - 1 = InterWave effects enable (default 0);
803 requires 8 voices
805 Module supports up to 8 cards, autoprobe and ISA PnP.
807 Module snd-korg1212
808 -------------------
810 Module for Korg 1212 IO PCI card
812 Module supports up to 8 cards.
814 Module snd-maestro3
815 -------------------
817 Module for Allegro/Maestro3 chips
819 external_amp - enable external amp (enabled by default)
820 amp_gpio - GPIO pin number for external amp (0-15) or
821 -1 for default pin (8 for allegro, 1 for
822 others)
824 Module supports autoprobe and multiple chips (max 8).
826 Note: the binding of amplifier is dependent on hardware.
827 If there is no sound even though all channels are unmuted, try to
828 specify other gpio connection via amp_gpio option.
829 For example, a Panasonic notebook might need "amp_gpio=0x0d"
830 option.
832 The power-management is supported.
834 Module snd-mixart
835 -----------------
837 Module for Digigram miXart8 sound cards.
839 Module supports multiple cards.
840 Note: One miXart8 board will be represented as 4 alsa cards.
841 See MIXART.txt for details.
843 When the driver is compiled as a module and the hotplug firmware
844 is supported, the firmware data is loaded via hotplug automatically.
845 Install the necessary firmware files in alsa-firmware package.
846 When no hotplug fw loader is available, you need to load the
847 firmware via mixartloader utility in alsa-tools package.
849 Module snd-mpu401
850 -----------------
852 Module for MPU-401 UART devices.
854 port - port number or -1 (disable)
855 irq - IRQ number or -1 (disable)
856 pnp - PnP detection - 0 = disable, 1 = enable (default)
858 Module supports multiple devices (max 8) and PnP.
860 Module snd-mtpav
861 ----------------
863 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
864 port).
866 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
867 irq - IRQ # for MTPAV (7,5, default=7)
868 hwports - number of supported hardware ports, default=8.
870 Module supports only 1 card. This module has no enable option.
872 Module snd-nm256
873 ----------------
875 Module for NeoMagic NM256AV/ZX chips
877 playback_bufsize - max playback frame size in kB (4-128kB)
878 capture_bufsize - max capture frame size in kB (4-128kB)
879 force_ac97 - 0 or 1 (disabled by default)
880 buffer_top - specify buffer top address
881 use_cache - 0 or 1 (disabled by default)
882 vaio_hack - alias buffer_top=0x25a800
883 reset_workaround - enable AC97 RESET workaround for some laptops
885 Module supports autoprobe and multiple chips (max 8).
887 The power-management is supported.
889 Note: on some notebooks the buffer address cannot be detected
890 automatically, or causes hang-up during initialization.
891 In such a case, specify the buffer top address explicity via
892 buffer_top option.
893 For example,
894 Sony F250: buffer_top=0x25a800
895 Sony F270: buffer_top=0x272800
896 The driver supports only ac97 codec. It's possible to force
897 to initialize/use ac97 although it's not detected. In such a
898 case, use force_ac97=1 option - but *NO* guarantee whether it
899 works!
901 Note: The NM256 chip can be linked internally with non-AC97
902 codecs. This driver supports only the AC97 codec, and won't work
903 with machines with other (most likely CS423x or OPL3SAx) chips,
904 even though the device is detected in lspci. In such a case, try
905 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
906 but some doesn't have ISA PnP. You'll need to speicfy isapnp=0
907 and proper hardware parameters in the case without ISA PnP.
909 Note: some laptops need a workaround for AC97 RESET. For the
910 known hardware like Dell Latitude LS and Sony PCG-F305, this
911 workaround is enabled automatically. For other laptops with a
912 hard freeze, you can try reset_workaround=1 option.
914 Note: This driver is really crappy. It's a porting from the
915 OSS driver, which is a result of black-magic reverse engineering.
916 The detection of codec will fail if the driver is loaded *after*
917 X-server as described above. You might be able to force to load
918 the module, but it may result in hang-up. Hence, make sure that
919 you load this module *before* X if you encounter this kind of
920 problem.
922 Module snd-opl3sa2
923 ------------------
925 Module for Yamaha OPL3-SA2/SA3 sound cards.
927 port - control port # for OPL3-SA chip (0x370)
928 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
929 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
930 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
931 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
932 irq - IRQ # for OPL3-SA chip (5,7,9,10)
933 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
934 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
935 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
937 Module supports up to 8 cards and ISA PnP. This module does not support
938 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
940 The power-management is supported.
942 Module snd-opti92x-ad1848
943 -------------------------
945 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
946 Module works with OAK Mozart cards as well.
948 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
949 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
950 fm_port - port # for OPL3 device (0x388)
951 irq - IRQ # for WSS chip (5,7,9,10,11)
952 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
953 dma1 - first DMA # for WSS chip (0,1,3)
955 This module supports only one card, autoprobe and PnP.
957 Module snd-opti92x-cs4231
958 -------------------------
960 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
962 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
963 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
964 fm_port - port # for OPL3 device (0x388)
965 irq - IRQ # for WSS chip (5,7,9,10,11)
966 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
967 dma1 - first DMA # for WSS chip (0,1,3)
968 dma2 - second DMA # for WSS chip (0,1,3)
970 This module supports only one card, autoprobe and PnP.
972 Module snd-opti93x
973 ------------------
975 Module for sound cards based on OPTi 82c93x chips.
977 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
978 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
979 fm_port - port # for OPL3 device (0x388)
980 irq - IRQ # for WSS chip (5,7,9,10,11)
981 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
982 dma1 - first DMA # for WSS chip (0,1,3)
983 dma2 - second DMA # for WSS chip (0,1,3)
985 This module supports only one card, autoprobe and PnP.
987 Module snd-powermac (on ppc only)
988 ---------------------------------
990 Module for PowerMac, iMac and iBook on-board soundchips
992 enable_beep - enable beep using PCM (enabled as default)
994 Module supports autoprobe a chip.
996 Note: the driver may have problems regarding endianess.
998 The power-management is supported.
1000 Module snd-rme32
1001 ----------------
1003 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1004 Prodif96 and Prodif Gold) sound cards.
1006 Module supports up to 8 cards.
1008 Module snd-rme96
1009 ----------------
1011 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1013 Module supports up to 8 cards.
1015 Module snd-rme9652
1016 ------------------
1018 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1020 precise_ptr - Enable precise pointer (doesn't work reliably).
1021 (default = 0)
1023 Module supports up to 8 cards.
1025 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1026 module did formerly. It will allocate the buffers in advance
1027 when any RME9652 cards are found. To make the buffer
1028 allocation sure, load snd-page-alloc module in the early
1029 stage of boot sequence.
1031 Module snd-sa11xx-uda1341 (on arm only)
1032 ---------------------------------------
1034 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1036 Module supports only one card.
1037 Module has no enable and index options.
1039 Module snd-sb8
1040 --------------
1042 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1043 SoundBlaster 2.0,
1044 SoundBlaster Pro
1046 port - port # for SB DSP chip (0x220,0x240,0x260)
1047 irq - IRQ # for SB DSP chip (5,7,9,10)
1048 dma8 - DMA # for SB DSP chip (1,3)
1050 Module supports up to 8 cards and autoprobe.
1052 Module snd-sb16 and snd-sbawe
1053 -----------------------------
1055 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1056 SoundBlaster AWE 32 (PnP),
1057 SoundBlaster AWE 64 PnP
1059 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1060 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1061 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1062 (snd-sbawe module only)
1063 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1064 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1065 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1066 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1067 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1068 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1070 Module supports up to 8 cards, autoprobe and ISA PnP.
1072 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1073 disable 16bit DMA with dma16 = -1 module parameter.
1074 Also, all Sound Blaster 16 type cards can operate in 16-bit
1075 half duplex mode through 8-bit DMA channel by disabling their
1076 16-bit DMA channel.
1078 Module snd-sgalaxy
1079 ------------------
1081 Module for Aztech Sound Galaxy sound card.
1083 sbport - Port # for SB16 interface (0x220,0x240)
1084 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1085 irq - IRQ # (7,9,10,11)
1086 dma1 - DMA #
1088 Module supports up to 8 cards.
1090 Module snd-sscape
1091 -----------------
1093 Module for ENSONIQ SoundScape PnP cards.
1095 port - Port # (PnP setup)
1096 irq - IRQ # (PnP setup)
1097 mpu_irq - MPU-401 IRQ # (PnP setup)
1098 dma - DMA # (PnP setup)
1100 Module supports up to 8 cards. ISA PnP must be enabled.
1101 You need sscape_ctl tool in alsa-tools package for loading
1102 the microcode.
1104 Module snd-sun-amd7930 (on sparc only)
1105 --------------------------------------
1107 Module for AMD7930 sound chips found on Sparcs.
1109 Module supports up to 8 cards.
1111 Module snd-sun-cs4231 (on sparc only)
1112 -------------------------------------
1114 Module for CS4231 sound chips found on Sparcs.
1116 Module supports up to 8 cards.
1118 Module snd-wavefront
1119 --------------------
1121 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1123 cs4232_pcm_port - Port # for CS4232 PCM interface.
1124 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1125 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1126 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1127 use_cs4232_midi - Use CS4232 MPU-401 interface
1128 (inaccessibly located inside your computer)
1129 ics2115_port - Port # for ICS2115
1130 ics2115_irq - IRQ # for ICS2115
1131 fm_port - FM OPL-3 Port #
1132 dma1 - DMA1 # for CS4232 PCM interface.
1133 dma2 - DMA2 # for CS4232 PCM interface.
1134 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1136 Module supports up to 8 cards and ISA PnP.
1138 Module snd-sonicvibes
1139 ---------------------
1141 Module for S3 SonicVibes PCI sound cards.
1142 * PINE Schubert 32 PCI
1144 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1145 - SoundCard must have onboard SRAM for this.
1146 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1148 Module supports up to 8 cards and autoprobe.
1150 Module snd-serial-u16550
1151 ------------------------
1153 Module for UART16550A serial MIDI ports.
1155 port - port # for UART16550A chip
1156 irq - IRQ # for UART16550A chip, -1 = poll mode
1157 speed - speed in bauds (9600,19200,38400,57600,115200)
1158 38400 = default
1159 base - base for divisor in bauds (57600,115200,230400,460800)
1160 115200 = default
1161 outs - number of MIDI ports in a serial port (1-4)
1162 1 = default
1163 adaptor - Type of adaptor.
1164 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1165 3 = MS-124W M/B, 4 = Generic
1167 Module supports up to 8 cards. This module does not support autoprobe
1168 thus the main port must be specified!!! Other options are optional.
1170 Module snd-trident
1171 ------------------
1173 Module for Trident 4DWave DX/NX sound cards.
1174 * Best Union Miss Melody 4DWave PCI
1175 * HIS 4DWave PCI
1176 * Warpspeed ONSpeed 4DWave PCI
1177 * AzTech PCI 64-Q3D
1178 * Addonics SV 750
1179 * CHIC True Sound 4Dwave
1180 * Shark Predator4D-PCI
1181 * Jaton SonicWave 4D
1183 pcm_channels - max channels (voices) reserved for PCM
1184 wavetable_size - max wavetable size in kB (4-?kb)
1186 Module supports up to 8 cards and autoprobe.
1188 The power-management is supported.
1190 Module snd-usb-audio
1191 --------------------
1193 Module for USB audio and USB MIDI devices.
1195 vid - Vendor ID for the device (optional)
1196 pid - Product ID for the device (optional)
1198 This module supports up to 8 cards, autoprobe and hotplugging.
1200 Module snd-usb-usx2y
1201 --------------------
1203 Module for Tascam USB US-122, US-224 and US-428 devices.
1205 This module supports up to 8 cards, autoprobe and hotplugging.
1207 Note: you need to load the firmware via usx2yloader utility included
1208 in alsa-tools and alsa-firmware packages.
1210 Module snd-via82xx
1211 ------------------
1213 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1214 8233A, 8233C, 8235 (south) bridge.
1216 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1217 [VIA686A/686B only]
1218 joystick - Enable joystick (default off) [VIA686A/686B only]
1219 ac97_clock - AC'97 codec clock base (default 48000Hz)
1220 dxs_support - support DXS channels,
1221 0 = auto (defalut), 1 = enable, 2 = disable,
1222 3 = 48k only, 4 = no VRA
1223 [VIA8233/C,8235 only]
1224 ac97_quirk - AC'97 workaround for strange hardware
1225 See the description of intel8x0 module for details.
1227 Module supports autoprobe and multiple bus-master chips (max 8).
1229 Note: on some SMP motherboards like MSI 694D the interrupts might
1230 not be generated properly. In such a case, please try to
1231 set the SMP (or MPS) version on BIOS to 1.1 instead of
1232 default value 1.4. Then the interrupt number will be
1233 assigned under 15. You might also upgrade your BIOS.
1235 Note: VIA8233/5 (not VIA8233A) can support DXS (direct sound)
1236 channels as the first PCM. On these channels, up to 4
1237 streams can be played at the same time.
1238 As default (dxs_support = 0), 48k fixed rate is chosen
1239 except for the known devices since the output is often
1240 noisy except for 48k on some mother boards due to the
1241 bug of BIOS.
1242 Please try once dxs_support=1 and if it works on other
1243 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1244 know the PCI subsystem vendor/device id's (output of
1245 "lspci -nv").
1246 If it doesn't work, try dxs_support=4. If it still doesn't
1247 work and the default setting is ok, dxs_support=3 is the
1248 right choice. If the default setting doesn't work at all,
1249 try dxs_support=2 to disable the DXS channels.
1250 In any cases, please let us know the result and the
1251 subsystem vendor/device ids.
1253 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1254 additonally. The mpu_port option is for VIA686 chips only.
1256 Module snd-via82xx-modem
1257 ------------------------
1259 Module for VIA82xx AC97 modem
1261 ac97_clock - AC'97 codec clock base (default 48000Hz)
1263 Module supports up to 8 cards.
1265 Note: The default index value of this module is -2, i.e. the first
1266 slot is excluded.
1268 Module snd-virmidi
1269 ------------------
1271 Module for virtual rawmidi devices.
1272 This module creates virtual rawmidi devices which communicate
1273 to the corresponding ALSA sequencer ports.
1275 midi_devs - MIDI devices # (1-8, default=4)
1277 Module supports up to 8 cards.
1279 Module snd-vx222
1280 ----------------
1282 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1284 mic - Enable Microphone on V222 Mic (NYI)
1285 ibl - Capture IBL size. (default = 0, minimum size)
1287 Module supports up to 8 cards.
1289 When the driver is compiled as a module and the hotplug firmware
1290 is supported, the firmware data is loaded via hotplug automatically.
1291 Install the necessary firmware files in alsa-firmware package.
1292 When no hotplug fw loader is available, you need to load the
1293 firmware via vxloader utility in alsa-tools package. To invoke
1294 vxloader automatically, add the following to /etc/modprobe.conf
1296 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1298 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1299 /etc/modules.conf, instead.)
1300 IBL size defines the interrupts period for PCM. The smaller size
1301 gives smaller latency but leads to more CPU consumption, too.
1302 The size is usually aligned to 126. As default (=0), the smallest
1303 size is chosen. The possible IBL values can be found in
1304 /proc/asound/cardX/vx-status proc file.
1306 Module snd-vxpocket
1307 -------------------
1309 Module for Digigram VX-Pocket VX2 PCMCIA card.
1311 ibl - Capture IBL size. (default = 0, minimum size)
1313 Module supports up to 8 cards. The module is compiled only when
1314 PCMCIA is supported on kernel.
1316 To activate the driver via the card manager, you'll need to set
1317 up /etc/pcmcia/vxpocket.conf. See the sound/pcmcia/vx/vxpocket.c.
1319 When the driver is compiled as a module and the hotplug firmware
1320 is supported, the firmware data is loaded via hotplug automatically.
1321 Install the necessary firmware files in alsa-firmware package.
1322 When no hotplug fw loader is available, you need to load the
1323 firmware via vxloader utility in alsa-tools package.
1325 About capture IBL, see the description of snd-vx222 module.
1327 Note: the driver is build only when CONFIG_ISA is set.
1329 Module snd-vxp440
1330 -----------------
1332 Module for Digigram VX-Pocket 440 PCMCIA card.
1334 ibl - Capture IBL size. (default = 0, minimum size)
1336 Module supports up to 8 cards. The module is compiled only when
1337 PCMCIA is supported on kernel.
1339 To activate the driver via the card manager, you'll need to set
1340 up /etc/pcmcia/vxp440.conf. See the sound/pcmcia/vx/vxp440.c.
1342 When the driver is compiled as a module and the hotplug firmware
1343 is supported, the firmware data is loaded via hotplug automatically.
1344 Install the necessary firmware files in alsa-firmware package.
1345 When no hotplug fw loader is available, you need to load the
1346 firmware via vxloader utility in alsa-tools package.
1348 About capture IBL, see the description of snd-vx222 module.
1350 Note: the driver is build only when CONFIG_ISA is set.
1352 Module snd-ymfpci
1353 -----------------
1355 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
1357 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
1358 1 (auto-detect for YMF744/754 only)
1359 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
1360 1 (auto-detect for YMF744/754 only)
1361 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
1362 1 (auto-detect)
1363 rear_switch - enable shared rear/line-in switch (bool)
1365 Module supports autoprobe and multiple chips (max 8).
1367 The power-management is supported.
1369 Module snd-pdaudiocf
1370 --------------------
1372 Module for Sound Core PDAudioCF sound card.
1374 Note: the driver is build only when CONFIG_ISA is set.
1377 Configuring Non-ISAPNP Cards
1378 ============================
1380 When the kernel is configured with ISA-PnP support, the modules
1381 supporting the isapnp cards will have module options "isapnp".
1382 If this option is set, *only* the ISA-PnP devices will be probed.
1383 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
1384 together with the proper i/o and irq configuration.
1386 When the kernel is configured without ISA-PnP support, isapnp option
1387 will be not built in.
1390 Module Autoloading Support
1391 ==========================
1393 The ALSA drivers can be loaded automatically on demand by defining
1394 module aliases. The string 'snd-card-%1' is requested for ALSA native
1395 devices where %i is sound card number from zero to seven.
1397 To auto-load an ALSA driver for OSS services, define the string
1398 'sound-slot-%i' where %i means the slot number for OSS, which
1399 corresponds to the card index of ALSA. Usually, define this
1400 as the the same card module.
1402 An example configuration for a single emu10k1 card is like below:
1403 ----- /etc/modprobe.conf
1404 alias snd-card-0 snd-emu10k1
1405 alias sound-slot-0 snd-emu10k1
1406 ----- /etc/modprobe.conf
1408 The available number of auto-loaded sound cards depends on the module
1409 option "cards_limit" of snd module. As default it's set to 1.
1410 To enable the auto-loading of multiple cards, specify the number of
1411 sound cards in that option.
1413 When multiple cards are available, it'd better to specify the index
1414 number for each card via module option, too, so that the order of
1415 cards is kept consistent.
1417 An example configuration for two sound cards is like below:
1419 ----- /etc/modprobe.conf
1420 # ALSA portion
1421 options snd cards_limit=2
1422 alias snd-card-0 snd-interwave
1423 alias snd-card-1 snd-ens1371
1424 options snd-interwave index=0
1425 options snd-ens1371 index=1
1426 # OSS/Free portion
1427 alias sound-slot-0 snd-interwave
1428 alias sound-slot-1 snd-ens1371
1429 ----- /etc/moprobe.conf
1431 In this example, the interwave card is always loaded as the first card
1432 (index 0) and ens1371 as the second (index 1).
1435 ALSA PCM devices to OSS devices mapping
1436 =======================================
1438 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
1439 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
1440 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
1441 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
1442 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
1443 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
1444 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
1445 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
1446 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
1448 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
1449 sound card number and second means device number. The ALSA devices
1450 have either 'c' or 'p' suffix indicating the direction, capture and
1451 playback, respectively.
1453 Please note that the device mapping above may be varied via the module
1454 options of snd-pcm-oss module.
1457 DEVFS support
1458 =============
1460 The ALSA driver fully supports the devfs extension.
1461 You should add lines below to your devfsd.conf file:
1463 LOOKUP snd MODLOAD ACTION snd
1464 REGISTER ^sound/.* PERMISSIONS root.audio 660
1465 REGISTER ^snd/.* PERMISSIONS root.audio 660
1467 Warning: These lines assume that you have the audio group in your system.
1468 Otherwise replace audio word with another group name (root for
1469 example).
1472 Proc interfaces (/proc/asound)
1473 ==============================
1475 /proc/asound/card#/pcm#[cp]/oss
1476 -------------------------------
1477 String "erase" - erase all additional informations about OSS applications
1478 String "<app_name> <fragments> <fragment_size> [<options>]"
1480 <app_name> - name of application with (higher priority) or without path
1481 <fragments> - number of fragments or zero if auto
1482 <fragment_size> - size of fragment in bytes or zero if auto
1483 <options> - optional parameters
1484 - disable the application tries to open a pcm device for
1485 this channel but does not want to use it.
1486 (Cause a bug or mmap needs)
1487 It's good for Quake etc...
1488 - direct don't use plugins
1489 - block force block mode (rvplayer)
1490 - non-block force non-block mode
1491 - whole-frag write only whole fragments (optimization affecting
1492 playback only)
1493 - no-silence do not fill silence ahead to avoid clicks
1495 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
1496 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
1497 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
1500 Links
1501 =====
1503 ALSA project homepage
1504 http://www.alsa-project.org