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Linus Torvalds1da177e2005-04-16 15:20:36 -07001
2 Advanced Linux Sound Architecture - Driver
3 ==========================================
4 Configuration guide
5
6
7Kernel Configuration
8====================
9
10To enable ALSA support you need at least to build the kernel with
11primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,
12you don't have to choose any of the OSS modules.
13
14Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
15PCM supports if you want to run OSS applications with ALSA.
16
17If you want to support the WaveTable functionality on cards such as
18SB Live! then you need to enable "Sequencer support"
19(CONFIG_SND_SEQUENCER).
20
21To make ALSA debug messages more verbose, enable the "Verbose printk"
22and "Debug" options. To check for memory leaks, turn on "Debug memory"
23too. "Debug detection" will add checks for the detection of cards.
24
25Please 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
27using isapnptools.
28
29
30Creating ALSA devices
31=====================
32
33This depends on your distribution, but normally you use the /dev/MAKEDEV
34script to create the necessary device nodes. On some systems you use a
35script named 'snddevices'.
36
37
38Module parameters
39=================
40
41The user can load modules with options. If the module supports more than
42one card and you have more than one card of the same type then you can
43specify multiple values for the option separated by commas.
44
45Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
46
47 Module snd
48 ----------
49
50 The core ALSA module. It is used by all ALSA card drivers.
51 It takes the following options which have global effects.
52
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.
Takashi Iwai304cd072007-10-26 15:10:15 +020060 slots - Reserve the slot index for the given driver.
61 This option takes multiple strings.
62 See "Module Autoloading Support" section for details.
Takashi Iwai36ce99c2009-08-27 16:45:07 +020063 debug - Specifies the debug message level
64 (0 = disable debug prints, 1 = normal debug messages,
65 2 = verbose debug messages)
66 This option appears only when CONFIG_SND_DEBUG=y.
67 This option can be dynamically changed via sysfs
68 /sys/modules/snd/parameters/debug file.
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
70 Module snd-pcm-oss
71 ------------------
72
73 The PCM OSS emulation module.
74 This module takes options which change the mapping of devices.
75
76 dsp_map - PCM device number maps assigned to the 1st OSS device.
77 - Default: 0
78 adsp_map - PCM device number maps assigned to the 2st OSS device.
79 - Default: 1
80 nonblock_open
Takashi Iwai62430082005-09-05 17:12:29 +020081 - Don't block opening busy PCM devices. Default: 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
84 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
85 to PCM #0 of the card #0.
86 For changing the second or later card, specify the option with
87 commas, such like "dsp_map=0,1".
88
89 nonblock_open option is used to change the behavior of the PCM
90 regarding opening the device. When this option is non-zero,
91 opening a busy OSS PCM device won't be blocked but return
92 immediately with EAGAIN (just like O_NONBLOCK flag).
93
94 Module snd-rawmidi
95 ------------------
96
97 This module takes options which change the mapping of devices.
98 similar to those of the snd-pcm-oss module.
99
100 midi_map - MIDI device number maps assigned to the 1st OSS device.
101 - Default: 0
102 amidi_map - MIDI device number maps assigned to the 2st OSS device.
103 - Default: 1
104
105 Common parameters for top sound card modules
106 --------------------------------------------
107
108 Each of top level sound card module takes the following options.
109
110 index - index (slot #) of sound card
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100111 - Values: 0 through 31 or negative
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 - If nonnegative, assign that index number
113 - if negative, interpret as a bitmask of permissible
114 indices; the first free permitted index is assigned
115 - Default: -1
116 id - card ID (identifier or name)
117 - Can be up to 15 characters long
118 - Default: the card type
119 - A directory by this name is created under /proc/asound/
120 containing information about the card
121 - This ID can be used instead of the index number in
122 identifying the card
123 enable - enable card
124 - Default: enabled, for PCI and ISA PnP cards
125
Rene Hermancf40a312006-03-28 12:38:20 +0200126 Module snd-adlib
127 ----------------
128
129 Module for AdLib FM cards.
130
131 port - port # for OPL chip
132
133 This module supports multiple cards. It does not support autoprobe, so
134 the port must be specified. For actual AdLib FM cards it will be 0x388.
135 Note that this card does not have PCM support and no mixer; only FM
136 synthesis.
137
138 Make sure you have "sbiload" from the alsa-tools package available and,
139 after loading the module, find out the assigned ALSA sequencer port
140 number through "sbiload -l". Example output:
141
142 Port Client name Port name
143 64:0 OPL2 FM synth OPL2 FM Port
144
145 Load the std.sb and drums.sb patches also supplied by sbiload:
146
147 sbiload -p 64:0 std.sb drums.sb
148
149 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
150 instead. To have the card produce sound, use aplaymidi from alsa-utils:
151
152 aplaymidi -p 64:0 foo.mid
153
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 Module snd-ad1816a
155 ------------------
156
157 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
158
Takashi Iwai506d4c62005-08-03 14:02:47 +0200159 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100161 This module supports multiple cards, autoprobe and PnP.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162
163 Module snd-ad1848
164 -----------------
165
166 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
167
168 port - port # for AD1848 chip
169 irq - IRQ # for AD1848 chip
170 dma1 - DMA # for AD1848 chip (0,1,3)
171
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100172 This module supports multiple cards. It does not support autoprobe
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 thus main port must be specified!!! Other ports are optional.
174
Takashi Iwaia4efc232005-11-17 17:24:26 +0100175 The power-management is supported.
176
Clemens Ladisch84010e62005-09-02 07:57:59 +0200177 Module snd-ad1889
178 -----------------
179
180 Module for Analog Devices AD1889 chips.
181
182 ac97_quirk - AC'97 workaround for strange hardware
183 See the description of intel8x0 module for details.
184
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100185 This module supports multiple cards.
Clemens Ladisch84010e62005-09-02 07:57:59 +0200186
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 Module snd-ali5451
188 ------------------
189
190 Module for ALi M5451 PCI chip.
191
192 pcm_channels - Number of hardware channels assigned for PCM
193 spdif - Support SPDIF I/O
194 - Default: disabled
195
Takashi Iwai8a3fb4d2005-10-20 17:10:49 +0200196 This module supports one chip and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
198 The power-management is supported.
199
200 Module snd-als100
201 -----------------
202
203 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
204
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100205 This module supports multiple cards, autoprobe and PnP.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
Takashi Iwaia4efc232005-11-17 17:24:26 +0100207 The power-management is supported.
208
Ash Willisb3a70d52006-03-27 13:20:40 +0200209 Module snd-als300
210 -----------------
211
212 Module for Avance Logic ALS300 and ALS300+
213
214 This module supports multiple cards.
215
216 The power-management is supported.
217
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 Module snd-als4000
219 ------------------
220
221 Module for sound cards based on Avance Logic ALS4000 PCI chip.
222
223 joystick_port - port # for legacy joystick support.
224 0 = disabled (default), 1 = auto-detect
225
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100226 This module supports multiple cards, autoprobe and PnP.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227
Takashi Iwaia4efc232005-11-17 17:24:26 +0100228 The power-management is supported.
229
Eliot Blennerhassett719f82d2010-04-21 18:17:39 +0200230 Module snd-asihpi
231 -----------------
232
233 Module for AudioScience ASI soundcards
234
235 enable_hpi_hwdep - enable HPI hwdep for AudioScience soundcard
236
237 This module supports multiple cards.
238 The driver requires the firmware loader support on kernel.
239
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 Module snd-atiixp
241 -----------------
242
Takashi Iwai62430082005-09-05 17:12:29 +0200243 Module for ATI IXP 150/200/250/400 AC97 controllers.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244
Takashi Iwai62430082005-09-05 17:12:29 +0200245 ac97_clock - AC'97 clock (default = 48000)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 ac97_quirk - AC'97 workaround for strange hardware
Takashi Iwai62430082005-09-05 17:12:29 +0200247 See "AC97 Quirk Option" section below.
Dan Carpenter14e1d352006-11-20 16:35:18 +0100248 ac97_codec - Workaround to specify which AC'97 codec
249 instead of probing. If this works for you
250 file a bug with your `lspci -vn` output.
251 -2 -- Force probing.
252 -1 -- Default behavior.
253 0-2 -- Use the specified codec.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
255
Clemens Ladischb7fe4622005-10-04 08:46:51 +0200256 This module supports one card and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
Takashi Iwai62430082005-09-05 17:12:29 +0200258 ATI IXP has two different methods to control SPDIF output. One is
259 over AC-link and another is over the "direct" SPDIF output. The
260 implementation depends on the motherboard, and you'll need to
261 choose the correct one via spdif_aclink module option.
262
Takashi Iwaia4efc232005-11-17 17:24:26 +0100263 The power-management is supported.
264
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 Module snd-atiixp-modem
266 -----------------------
267
268 Module for ATI IXP 150/200/250 AC97 modem controllers.
269
Clemens Ladischb7fe4622005-10-04 08:46:51 +0200270 This module supports one card and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
272 Note: The default index value of this module is -2, i.e. the first
273 slot is excluded.
274
Takashi Iwaia4efc232005-11-17 17:24:26 +0100275 The power-management is supported.
276
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 Module snd-au8810, snd-au8820, snd-au8830
278 -----------------------------------------
279
280 Module for Aureal Vortex, Vortex2 and Advantage device.
281
282 pcifix - Control PCI workarounds
283 0 = Disable all workarounds
284 1 = Force the PCI latency of the Aureal card to 0xff
285 2 = Force the Extend PCI#2 Internal Master for Efficient
286 Handling of Dummy Requests on the VIA KT133 AGP Bridge
287 3 = Force both settings
288 255 = Autodetect what is required (default)
289
290 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
291 EQ, mpu401, gameport. A3D and wavetable support are still in development.
292 Development and reverse engineering work is being coordinated at
293 http://savannah.nongnu.org/projects/openvortex/
294 SPDIF output has a copy of the AC97 codec output, unless you use the
295 "spdif" pcm device, which allows raw data passthru.
296 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
297 Advantage.
298
Takashi Iwai62430082005-09-05 17:12:29 +0200299 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 control correctly. If you have problems regarding this, try
301 another ALSA compliant mixer (alsamixer works).
302
René Herman49531192010-08-11 13:08:06 +0200303 Module snd-azt1605
304 ------------------
305
306 Module for Aztech Sound Galaxy soundcards based on the Aztech AZT1605
307 chipset.
308
309 port - port # for BASE (0x220,0x240,0x260,0x280)
310 wss_port - port # for WSS (0x530,0x604,0xe80,0xf40)
311 irq - IRQ # for WSS (7,9,10,11)
312 dma1 - DMA # for WSS playback (0,1,3)
313 dma2 - DMA # for WSS capture (0,1), -1 = disabled (default)
314 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disabled (default)
315 mpu_irq - IRQ # for MPU-401 UART (3,5,7,9), -1 = disabled (default)
316 fm_port - port # for OPL3 (0x388), -1 = disabled (default)
317
318 This module supports multiple cards. It does not support autoprobe: port,
319 wss_port, irq and dma1 have to be specified. The other values are
320 optional.
321
322 "port" needs to match the BASE ADDRESS jumper on the card (0x220 or 0x240)
323 or the value stored in the card's EEPROM for cards that have an EEPROM and
324 their "CONFIG MODE" jumper set to "EEPROM SETTING". The other values can
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300325 be chosen freely from the options enumerated above.
René Herman49531192010-08-11 13:08:06 +0200326
327 If dma2 is specified and different from dma1, the card will operate in
328 full-duplex mode. When dma1=3, only dma2=0 is valid and the only way to
329 enable capture since only channels 0 and 1 are available for capture.
330
331 Generic settings are "port=0x220 wss_port=0x530 irq=10 dma1=1 dma2=0
332 mpu_port=0x330 mpu_irq=9 fm_port=0x388".
333
334 Whatever IRQ and DMA channels you pick, be sure to reserve them for
335 legacy ISA in your BIOS.
336
337 Module snd-azt2316
338 ------------------
339
340 Module for Aztech Sound Galaxy soundcards based on the Aztech AZT2316
341 chipset.
342
343 port - port # for BASE (0x220,0x240,0x260,0x280)
344 wss_port - port # for WSS (0x530,0x604,0xe80,0xf40)
345 irq - IRQ # for WSS (7,9,10,11)
346 dma1 - DMA # for WSS playback (0,1,3)
347 dma2 - DMA # for WSS capture (0,1), -1 = disabled (default)
348 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disabled (default)
349 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10), -1 = disabled (default)
350 fm_port - port # for OPL3 (0x388), -1 = disabled (default)
351
352 This module supports multiple cards. It does not support autoprobe: port,
353 wss_port, irq and dma1 have to be specified. The other values are
354 optional.
355
356 "port" needs to match the BASE ADDRESS jumper on the card (0x220 or 0x240)
357 or the value stored in the card's EEPROM for cards that have an EEPROM and
358 their "CONFIG MODE" jumper set to "EEPROM SETTING". The other values can
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300359 be chosen freely from the options enumerated above.
René Herman49531192010-08-11 13:08:06 +0200360
361 If dma2 is specified and different from dma1, the card will operate in
362 full-duplex mode. When dma1=3, only dma2=0 is valid and the only way to
363 enable capture since only channels 0 and 1 are available for capture.
364
365 Generic settings are "port=0x220 wss_port=0x530 irq=10 dma1=1 dma2=0
366 mpu_port=0x330 mpu_irq=9 fm_port=0x388".
367
368 Whatever IRQ and DMA channels you pick, be sure to reserve them for
369 legacy ISA in your BIOS.
370
Takashi Iwai9e235322008-02-20 12:13:29 +0100371 Module snd-aw2
372 --------------
373
374 Module for Audiowerk2 sound card
375
376 This module supports multiple cards.
377
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 Module snd-azt2320
379 ------------------
380
381 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
382
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100383 This module supports multiple cards, PnP and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384
Takashi Iwaia4efc232005-11-17 17:24:26 +0100385 The power-management is supported.
386
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 Module snd-azt3328
388 ------------------
389
390 Module for sound cards based on Aztech AZF3328 PCI chip.
391
392 joystick - Enable joystick (default off)
393
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100394 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
396 Module snd-bt87x
397 ----------------
398
399 Module for video cards based on Bt87x chips.
400
401 digital_rate - Override the default digital rate (Hz)
402 load_all - Load the driver even if the card model isn't known
403
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100404 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405
406 Note: The default index value of this module is -2, i.e. the first
407 slot is excluded.
408
409 Module snd-ca0106
410 -----------------
411
412 Module for Creative Audigy LS and SB Live 24bit
413
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100414 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415
416
417 Module snd-cmi8330
418 ------------------
419
420 Module for sound cards based on C-Media CMI8330 ISA chips.
421
Rene Herman64e0e2d2007-12-13 16:29:33 +0100422 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
423
424 with isapnp=0, the following options are available:
425
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 wssport - port # for CMI8330 chip (WSS)
427 wssirq - IRQ # for CMI8330 chip (WSS)
428 wssdma - first DMA # for CMI8330 chip (WSS)
429 sbport - port # for CMI8330 chip (SB16)
430 sbirq - IRQ # for CMI8330 chip (SB16)
431 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
432 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
Takashi Iwai9e128fd2009-01-29 11:49:10 +0100433 fmport - (optional) OPL3 I/O port
434 mpuport - (optional) MPU401 I/O port
435 mpuirq - (optional) MPU401 irq #
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100437 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438
Takashi Iwaia4efc232005-11-17 17:24:26 +0100439 The power-management is supported.
440
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 Module snd-cmipci
442 -----------------
443
Clemens Ladisch45c41b42007-08-22 09:45:03 +0200444 Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445
Clemens Ladischc78c9502007-09-03 09:55:49 +0200446 mpu_port - port address of MIDI interface (8338 only):
Clemens Ladisch45c41b42007-08-22 09:45:03 +0200447 0x300,0x310,0x320,0x330 = legacy port,
Takashi Iwaicab5c4c2006-05-04 14:36:08 +0200448 0 = disable (default)
Clemens Ladisch45c41b42007-08-22 09:45:03 +0200449 fm_port - port address of OPL-3 FM synthesizer (8x38 only):
450 0x388 = legacy port,
451 1 = integrated PCI port (default on 8738),
Takashi Iwai2f24d1592007-02-15 18:56:43 +0100452 0 = disable
Takashi Iwai62430082005-09-05 17:12:29 +0200453 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 (default = 1)
455 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
456
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100457 This module supports autoprobe and multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
Takashi Iwaia4efc232005-11-17 17:24:26 +0100459 The power-management is supported.
460
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 Module snd-cs4231
462 -----------------
463
464 Module for sound cards based on CS4231 ISA chips.
465
466 port - port # for CS4231 chip
467 mpu_port - port # for MPU-401 UART (optional), -1 = disable
468 irq - IRQ # for CS4231 chip
469 mpu_irq - IRQ # for MPU-401 UART
470 dma1 - first DMA # for CS4231 chip
471 dma2 - second DMA # for CS4231 chip
472
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100473 This module supports multiple cards. This module does not support autoprobe
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 thus main port must be specified!!! Other ports are optional.
475
476 The power-management is supported.
477
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 Module snd-cs4236
479 -----------------
480
Takashi Iwaic844a5d2009-02-16 23:17:33 +0100481 Module for sound cards based on CS4232/CS4232A,
482 CS4235/CS4236/CS4236B/CS4237B/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 CS4238B/CS4239 ISA chips.
484
Rene Herman64e0e2d2007-12-13 16:29:33 +0100485 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
486
487 with isapnp=0, the following options are available:
488
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 port - port # for CS4236 chip (PnP setup - 0x534)
490 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
491 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
492 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
493 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
494 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
495 dma1 - first DMA # for CS4236 chip (0,1,3)
496 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100498 This module supports multiple cards. This module does not support autoprobe
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 (if ISA PnP is not used) thus main port and control port must be
500 specified!!! Other ports are optional.
501
502 The power-management is supported.
503
Takashi Iwaic844a5d2009-02-16 23:17:33 +0100504 This module is aliased as snd-cs4232 since it provides the old
505 snd-cs4232 functionality, too.
506
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 Module snd-cs4281
508 -----------------
509
510 Module for Cirrus Logic CS4281 soundchip.
511
512 dual_codec - Secondary codec ID (0 = disable, default)
513
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100514 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515
516 The power-management is supported.
517
518 Module snd-cs46xx
519 -----------------
520
521 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
522 CS4624/CS4630/CS4280 PCI chips.
523
Takashi Iwai62430082005-09-05 17:12:29 +0200524 external_amp - Force to enable external amplifier.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 thinkpad - Force to enable Thinkpad's CLKRUN control.
526 mmap_valid - Support OSS mmap mode (default = 0).
527
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100528 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 Usually external amp and CLKRUN controls are detected automatically
530 from PCI sub vendor/device ids. If they don't work, give the options
531 above explicitly.
532
533 The power-management is supported.
Takashi Iwai621887a2007-05-24 18:46:54 +0200534
535 Module snd-cs5530
536 _________________
537
538 Module for Cyrix/NatSemi Geode 5530 chip.
539
Takashi Iwai3e873172005-11-17 10:15:37 +0100540 Module snd-cs5535audio
541 ----------------------
542
543 Module for multifunction CS5535 companion PCI device
544
Takashi Iwaic00bd742006-05-19 19:22:34 +0200545 The power-management is supported.
Takashi Iwai3e873172005-11-17 10:15:37 +0100546
Wai Yew CHAY8cc72362009-05-14 08:05:58 +0200547 Module snd-ctxfi
548 ----------------
549
550 Module for Creative Sound Blaster X-Fi boards (20k1 / 20k2 chips)
551 * Creative Sound Blaster X-Fi Titanium Fatal1ty Champion Series
552 * Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series
553 * Creative Sound Blaster X-Fi Titanium Professional Audio
554 * Creative Sound Blaster X-Fi Titanium
555 * Creative Sound Blaster X-Fi Elite Pro
556 * Creative Sound Blaster X-Fi Platinum
557 * Creative Sound Blaster X-Fi Fatal1ty
558 * Creative Sound Blaster X-Fi XtremeGamer
559 * Creative Sound Blaster X-Fi XtremeMusic
560
561 reference_rate - reference sample rate, 44100 or 48000 (default)
562 multiple - multiple to ref. sample rate, 1 or 2 (default)
Takashi Iwai408bffd2010-01-14 09:19:46 +0100563 subsystem - override the PCI SSID for probing; the value
564 consists of SSVID << 16 | SSDID. The default is
565 zero, which means no override.
Wai Yew CHAY8cc72362009-05-14 08:05:58 +0200566
567 This module supports multiple cards.
568
Giuliano Pochinidd7b2542006-06-28 13:53:41 +0200569 Module snd-darla20
570 ------------------
571
572 Module for Echoaudio Darla20
573
574 This module supports multiple cards.
575 The driver requires the firmware loader support on kernel.
576
577 Module snd-darla24
578 ------------------
579
580 Module for Echoaudio Darla24
581
582 This module supports multiple cards.
583 The driver requires the firmware loader support on kernel.
584
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 Module snd-dt019x
586 -----------------
587
588 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
589 only)
590
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100591 This module supports multiple cards. This module is enabled only with
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 ISA PnP support.
593
Takashi Iwaia4efc232005-11-17 17:24:26 +0100594 The power-management is supported.
595
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 Module snd-dummy
597 ----------------
598
599 Module for the dummy sound card. This "card" doesn't do any output
600 or input, but you may use this module for any application which
601 requires a sound card (like RealPlayer).
602
Takashi Iwai30681bcf2009-09-03 16:08:08 +0200603 pcm_devs - Number of PCM devices assigned to each card
604 (default = 1, up to 4)
605 pcm_substreams - Number of PCM substreams assigned to each PCM
Takashi Iwai23aebca2009-11-02 14:10:59 +0100606 (default = 8, up to 128)
Takashi Iwai30681bcf2009-09-03 16:08:08 +0200607 hrtimer - Use hrtimer (=1, default) or system timer (=0)
Takashi Iwaia68c4d12009-09-04 12:19:36 +0200608 fake_buffer - Fake buffer allocations (default = 1)
Takashi Iwai30681bcf2009-09-03 16:08:08 +0200609
610 When multiple PCM devices are created, snd-dummy gives different
611 behavior to each PCM device:
612 0 = interleaved with mmap support
613 1 = non-interleaved with mmap support
614 2 = interleaved without mmap
615 3 = non-interleaved without mmap
616
Takashi Iwaia68c4d12009-09-04 12:19:36 +0200617 As default, snd-dummy drivers doesn't allocate the real buffers
618 but either ignores read/write or mmap a single dummy page to all
Masanari Iidab327d252013-10-29 12:05:02 +0900619 buffer pages, in order to save the resources. If your apps need
Takashi Iwaia68c4d12009-09-04 12:19:36 +0200620 the read/ written buffer data to be consistent, pass fake_buffer=0
621 option.
622
Takashi Iwaia4efc232005-11-17 17:24:26 +0100623 The power-management is supported.
624
Giuliano Pochinidd7b2542006-06-28 13:53:41 +0200625 Module snd-echo3g
626 -----------------
627
628 Module for Echoaudio 3G cards (Gina3G/Layla3G)
629
630 This module supports multiple cards.
631 The driver requires the firmware loader support on kernel.
632
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633 Module snd-emu10k1
634 ------------------
635
636 Module for EMU10K1/EMU10k2 based PCI sound cards.
637 * Sound Blaster Live!
638 * Sound Blaster PCI 512
639 * Emu APS (partially supported)
640 * Sound Blaster Audigy
641
642 extin - bitmap of available external inputs for FX8010 (see bellow)
643 extout - bitmap of available external outputs for FX8010 (see bellow)
644 seq_ports - allocated sequencer ports (4 by default)
645 max_synth_voices - limit of voices used for wavetable (64 by default)
646 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
647 given in MB unit. Default value is 128.
648 enable_ir - enable IR
649
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100650 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651
652 Input & Output configurations [extin/extout]
653 * Creative Card wo/Digital out [0x0003/0x1f03]
654 * Creative Card w/Digital out [0x0003/0x1f0f]
655 * Creative Card w/Digital CD in [0x000f/0x1f0f]
656 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
657 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
658 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
659 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
660 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
661 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
662 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
663 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
664 * Creative Card all ins and outs [0x3fff/0x7fff]
665
Takashi Iwaia4efc232005-11-17 17:24:26 +0100666 The power-management is supported.
667
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 Module snd-emu10k1x
669 -------------------
670
671 Module for Creative Emu10k1X (SB Live Dell OEM version)
672
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100673 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674
675 Module snd-ens1370
676 ------------------
677
678 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
679 * SoundBlaster PCI 64
680 * SoundBlaster PCI 128
681
682 joystick - Enable joystick (default off)
683
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100684 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685
Takashi Iwaid6ec8942006-01-20 14:05:06 +0100686 The power-management is supported.
687
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 Module snd-ens1371
689 ------------------
690
691 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
692 * SoundBlaster PCI 64
693 * SoundBlaster PCI 128
694 * SoundBlaster Vibra PCI
695
696 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
697 0 = disable (default), 1 = auto-detect
698
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100699 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700
Takashi Iwaid6ec8942006-01-20 14:05:06 +0100701 The power-management is supported.
702
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 Module snd-es1688
704 -----------------
705
706 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
707
Krzysztof Helta20971b2010-05-10 09:47:32 +0200708 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
Krzysztof Helta20971b2010-05-10 09:47:32 +0200711 fm_port - port # for OPL3 (option; share the same port as default)
712
713 with isapnp=0, the following additional options are available:
714 port - port # for ES-1688 chip (0x220,0x240,0x260)
715 irq - IRQ # for ES-1688 chip (5,7,9,10)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716 dma8 - DMA # for ES-1688 chip (0,1,3)
717
Krzysztof Helta20971b2010-05-10 09:47:32 +0200718 This module supports multiple cards and autoprobe (without MPU-401 port)
719 and PnP with the ES968 chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720
721 Module snd-es18xx
722 -----------------
723
724 Module for ESS AudioDrive ES-18xx sound cards.
725
Rene Herman64e0e2d2007-12-13 16:29:33 +0100726 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
727
728 with isapnp=0, the following options are available:
729
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730 port - port # for ES-18xx chip (0x220,0x240,0x260)
731 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
732 fm_port - port # for FM (optional, not used)
733 irq - IRQ # for ES-18xx chip (5,7,9,10)
734 dma1 - first DMA # for ES-18xx chip (0,1,3)
735 dma2 - first DMA # for ES-18xx chip (0,1,3)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100737 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
738 port if native ISA PnP routines are not used).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 When dma2 is equal with dma1, the driver works as half-duplex.
740
741 The power-management is supported.
742
743 Module snd-es1938
744 -----------------
745
746 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
747
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100748 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749
Takashi Iwaia4efc232005-11-17 17:24:26 +0100750 The power-management is supported.
751
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 Module snd-es1968
753 -----------------
754
755 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
756
757 total_bufsize - total buffer size in kB (1-4096kB)
758 pcm_substreams_p - playback channels (1-8, default=2)
759 pcm_substreams_c - capture channels (1-8, default=0)
760 clock - clock (0 = auto-detection)
761 use_pm - support the power-management (0 = off, 1 = on,
762 2 = auto (default))
763 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
764 joystick - enable joystick (default off)
765
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100766 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767
768 The power-management is supported.
769
770 Module snd-fm801
771 ----------------
772
773 Module for ForteMedia FM801 based PCI sound cards.
774
775 tea575x_tuner - Enable TEA575x tuner
776 - 1 = MediaForte 256-PCS
777 - 2 = MediaForte 256-PCPR
778 - 3 = MediaForte 64-PCR
779 - High 16-bits are video (radio) device number + 1
780 - example: 0x10002 (MediaForte 256-PCPR, device 1)
781
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100782 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783
Takashi Iwaia4efc232005-11-17 17:24:26 +0100784 The power-management is supported.
785
Giuliano Pochinidd7b2542006-06-28 13:53:41 +0200786 Module snd-gina20
787 -----------------
788
789 Module for Echoaudio Gina20
790
791 This module supports multiple cards.
792 The driver requires the firmware loader support on kernel.
793
794 Module snd-gina24
795 -----------------
796
797 Module for Echoaudio Gina24
798
799 This module supports multiple cards.
800 The driver requires the firmware loader support on kernel.
801
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 Module snd-gusclassic
803 ---------------------
804
805 Module for Gravis UltraSound Classic sound card.
806
807 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
808 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
809 dma1 - DMA # for GF1 chip (1,3,5,6,7)
810 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
811 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
812 voices - GF1 voices limit (14-32)
813 pcm_voices - reserved PCM voices
814
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100815 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816
817 Module snd-gusextreme
818 ---------------------
819
820 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
821
822 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
823 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
824 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
825 irq - IRQ # for ES-1688 chip (5,7,9,10)
826 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
827 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
828 dma8 - DMA # for ES-1688 chip (0,1,3)
829 dma1 - DMA # for GF1 chip (1,3,5,6,7)
830 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
831 voices - GF1 voices limit (14-32)
832 pcm_voices - reserved PCM voices
833
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100834 This module supports multiple cards and autoprobe (without MPU-401 port).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835
836 Module snd-gusmax
837 -----------------
838
839 Module for Gravis UltraSound MAX sound card.
840
841 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
842 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
843 dma1 - DMA # for GF1 chip (1,3,5,6,7)
844 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
845 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
846 voices - GF1 voices limit (14-32)
847 pcm_voices - reserved PCM voices
848
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100849 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850
851 Module snd-hda-intel
852 --------------------
853
Alexander Beregalov6ef10902008-08-13 00:10:55 +0400854 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8, ICH9, ICH10,
855 PCH, SCH),
856 ATI SB450, SB600, R600, RS600, RS690, RS780, RV610, RV620,
857 RV630, RV635, RV670, RV770,
Takashi Iwai9b878192006-05-17 11:26:39 +0200858 VIA VT8251/VT8237A,
859 SIS966, ULI M5461
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860
Takashi Iwai5aba4f82008-01-07 15:16:37 +0100861 [Multiple options for each card instance]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862 model - force the model name
Takashi Iwai1dac6692012-09-13 14:59:47 +0200863 position_fix - Fix DMA pointer
864 -1 = system default: choose appropriate one per controller
865 hardware
866 0 = auto: falls back to LPIB when POSBUF doesn't work
867 1 = use LPIB
868 2 = POSBUF: use position buffer
869 3 = VIACOMBO: VIA-specific workaround for capture
870 4 = COMBO: use LPIB for playback, auto for capture stream
Takashi Iwai95904742007-05-19 17:06:42 +0200871 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
Takashi Iwaiae374d62009-02-13 08:33:55 +0100872 When the bit 8 (0x100) is set, the lower 8 bits are used
873 as the "fixed" codec slots; i.e. the driver probes the
874 slots regardless what hardware reports back
Takashi Iwaid4d9cd032008-12-19 15:19:11 +0100875 probe_only - Only probing and no codec initialization (default=off);
876 Useful to check the initial codec status for debugging
Takashi Iwai8c53b962008-06-10 17:53:35 +0200877 bdl_pos_adj - Specifies the DMA IRQ timing delay in samples.
878 Passing -1 will make the driver to choose the appropriate
879 value based on the controller chip.
Takashi Iwai1e7b8c82009-06-17 17:30:54 +0200880 patch - Specifies the early "patch" files to modify the HD-audio
881 setup before initializing the codecs. This option is
882 available only when CONFIG_SND_HDA_PATCH_LOADER=y is set.
883 See HD-Audio.txt for details.
Takashi Iwai0920c9b2012-07-03 16:58:48 +0200884 beep_mode - Selects the beep registration mode (0=off, 1=on); default
Takashi Iwaid0193612009-11-16 12:03:49 +0100885 value is set via CONFIG_SND_HDA_INPUT_BEEP_MODE kconfig.
Takashi Iwai5aba4f82008-01-07 15:16:37 +0100886
887 [Single (global) options]
Takashi Iwai27346162006-01-12 18:28:44 +0100888 single_cmd - Use single immediate commands to communicate with
889 codecs (for debugging only)
Takashi Iwai134a11f2006-11-10 12:08:37 +0100890 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
Matt LaPlante19f59462009-04-27 15:06:31 +0200891 power_save - Automatic power-saving timeout (in second, 0 =
Takashi Iwai3723e2d2007-09-17 19:08:32 +0200892 disable)
Takashi Iwai8fc24422013-04-04 15:35:24 +0200893 power_save_controller - Reset HD-audio controller in power-saving mode
894 (default = on)
Pierre-Louis Bossart2ae66c22011-08-04 10:12:56 -0500895 align_buffer_size - Force rounding of buffer/period sizes to multiples
896 of 128 bytes. This is more efficient in terms of memory
897 access but isn't required by the HDA spec and prevents
898 users from specifying exact period/buffer sizes.
899 (default = on)
Takashi Iwai27fe48d92011-09-28 17:16:09 +0200900 snoop - Enable/disable snooping (default = on)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901
Takashi Iwai5aba4f82008-01-07 15:16:37 +0100902 This module supports multiple cards and autoprobe.
903
Takashi Iwaicae51172008-12-19 08:36:53 +0100904 See Documentation/sound/alsa/HD-Audio.txt for more details about
905 HD-audio driver.
906
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 Each codec may have a model table for different configurations.
908 If your machine isn't listed there, the default (usually minimal)
909 configuration is set up. You can pass "model=<name>" option to
910 specify a certain model in such a case. There are different
Takashi Iwaicae51172008-12-19 08:36:53 +0100911 models depending on the codec chip. The list of available models
912 is found in HD-Audio-Models.txt
Takashi Iwaidb064e52006-03-16 16:04:58 +0100913
Masanari Iida9ad477a2013-03-17 02:57:28 +0900914 The model name "generic" is treated as a special case. When this
Takashi Iwai6d7b1d72007-02-26 15:56:46 +0100915 model is given, the driver uses the generic codec parser without
916 "codec-patch". It's sometimes good for testing and debugging.
917
Takashi Iwai62430082005-09-05 17:12:29 +0200918 If the default configuration doesn't work and one of the above
Takashi Iwai30bc4482008-12-09 08:23:45 +0100919 matches with your device, report it together with alsa-info.sh
920 output (with --no-upload option) to kernel bugzilla or alsa-devel
Takashi Iwai62430082005-09-05 17:12:29 +0200921 ML (see the section "Links and Addresses").
922
Takashi Iwai3723e2d2007-09-17 19:08:32 +0200923 power_save and power_save_controller options are for power-saving
924 mode. See powersave.txt for details.
Takashi Iwaidee1b662007-08-13 16:10:30 +0200925
Takashi Iwaic74db862005-05-12 14:26:27 +0200926 Note 2: If you get click noises on output, try the module option
927 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
928 register value without FIFO size correction as the current
929 DMA pointer. position_fix=2 will make the driver to use
930 the position buffer instead of reading SD_LPIB register.
Michael Kerrisk90f31e32008-09-01 14:03:50 +0200931 (Usually SD_LPIB register is more accurate than the
Takashi Iwaic74db862005-05-12 14:26:27 +0200932 position buffer.)
933
Takashi Iwaia6f2fd52012-02-28 11:58:40 +0100934 position_fix=3 is specific to VIA devices. The position
935 of the capture stream is checked from both LPIB and POSBUF
936 values. position_fix=4 is a combination mode, using LPIB
937 for playback and POSBUF for capture.
938
Takashi Iwai27346162006-01-12 18:28:44 +0100939 NB: If you get many "azx_get_response timeout" messages at
940 loading, it's likely a problem of interrupts (e.g. ACPI irq
941 routing). Try to boot with options like "pci=noacpi". Also, you
942 can try "single_cmd=1" module option. This will switch the
943 communication method between HDA controller and codecs to the
944 single immediate commands instead of CORB/RIRB. Basically, the
945 single command mode is provided only for BIOS, and you won't get
946 unsolicited events, too. But, at least, this works independently
947 from the irq. Remember this is a last resort, and should be
948 avoided as much as possible...
949
Takashi Iwai95904742007-05-19 17:06:42 +0200950 MORE NOTES ON "azx_get_response timeout" PROBLEMS:
Carlos Garciac98be0c2014-04-04 22:31:00 -0400951 On some hardware, you may need to add a proper probe_mask option
Takashi Iwai95904742007-05-19 17:06:42 +0200952 to avoid the "azx_get_response timeout" problem above, instead.
953 This occurs when the access to non-existing or non-working codec slot
954 (likely a modem one) causes a stall of the communication via HD-audio
955 bus. You can see which codec slots are probed by enabling
Takashi Iwai62cf8722008-05-20 12:15:15 +0200956 CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
Takashi Iwai95904742007-05-19 17:06:42 +0200957 proc files. Then limit the slots to probe by probe_mask option.
958 For example, probe_mask=1 means to probe only the first slot, and
959 probe_mask=4 means only the third slot.
960
Takashi Iwaia4efc232005-11-17 17:24:26 +0100961 The power-management is supported.
962
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963 Module snd-hdsp
964 ---------------
965
966 Module for RME Hammerfall DSP audio interface(s)
967
Clemens Ladisch0ef797c2005-11-21 07:30:20 +0100968 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969
970 Note: The firmware data can be automatically loaded via hotplug
971 when CONFIG_FW_LOADER is set. Otherwise, you need to load
972 the firmware via hdsploader utility included in alsa-tools
973 package.
974 The firmware data is found in alsa-firmware package.
975
976 Note: snd-page-alloc module does the job which snd-hammerfall-mem
977 module did formerly. It will allocate the buffers in advance
978 when any HDSP cards are found. To make the buffer
979 allocation sure, load snd-page-alloc module in the early
Takashi Iwaib6a96912005-05-30 18:27:03 +0200980 stage of boot sequence. See "Early Buffer Allocation"
981 section.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982
Takashi Iwai54704402005-06-03 11:27:00 +0200983 Module snd-hdspm
984 ----------------
985
986 Module for RME HDSP MADI board.
987
988 precise_ptr - Enable precise pointer, or disable.
989 line_outs_monitor - Send playback streams to analog outs by default.
990 enable_monitor - Enable Analog Out on Channel 63/64 by default.
991
992 See hdspm.txt for details.
993
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994 Module snd-ice1712
995 ------------------
996
997 Module for Envy24 (ICE1712) based PCI sound cards.
998 * MidiMan M Audio Delta 1010
999 * MidiMan M Audio Delta 1010LT
1000 * MidiMan M Audio Delta DiO 2496
1001 * MidiMan M Audio Delta 66
1002 * MidiMan M Audio Delta 44
1003 * MidiMan M Audio Delta 410
1004 * MidiMan M Audio Audiophile 2496
1005 * TerraTec EWS 88MT
1006 * TerraTec EWS 88D
1007 * TerraTec EWX 24/96
1008 * TerraTec DMX 6Fire
Takashi Iwaic9bce912005-05-24 13:41:03 +02001009 * TerraTec Phase 88
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010 * Hoontech SoundTrack DSP 24
1011 * Hoontech SoundTrack DSP 24 Value
1012 * Hoontech SoundTrack DSP 24 Media 7.1
Takashi Iwaic9bce912005-05-24 13:41:03 +02001013 * Event Electronics, EZ8
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014 * Digigram VX442
Takashi Iwaic9bce912005-05-24 13:41:03 +02001015 * Lionstracs, Mediastaton
Alexander Beregalov6ef10902008-08-13 00:10:55 +04001016 * Terrasoniq TS 88
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017
1018 model - Use the given board model, one of the following:
1019 delta1010, dio2496, delta66, delta44, audiophile, delta410,
1020 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
Takashi Iwaic9bce912005-05-24 13:41:03 +02001021 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
1022 phase88, mediastation
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 omni - Omni I/O support for MidiMan M-Audio Delta44/66
Matt LaPlantefa00e7e2006-11-30 04:55:36 +01001024 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025 in msec resolution, default value is 500 (0.5 sec)
1026
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001027 This module supports multiple cards and autoprobe. Note: The consumer part
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028 is not used with all Envy24 based cards (for example in the MidiMan Delta
1029 serie).
1030
Takashi Iwaic9bce912005-05-24 13:41:03 +02001031 Note: The supported board is detected by reading EEPROM or PCI
1032 SSID (if EEPROM isn't available). You can override the
1033 model by passing "model" module option in case that the
1034 driver isn't configured properly or you want to try another
1035 type for testing.
1036
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037 Module snd-ice1724
1038 ------------------
1039
Takashi Iwaic9bce912005-05-24 13:41:03 +02001040 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
Takashi Iwai7a6c8ff2006-01-13 13:56:33 +01001041 * MidiMan M Audio Revolution 5.1
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 * MidiMan M Audio Revolution 7.1
Takashi Iwai56255062006-11-09 16:47:26 +01001043 * MidiMan M Audio Audiophile 192
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 * AMP Ltd AUDIO2000
Takashi Iwaic9bce912005-05-24 13:41:03 +02001045 * TerraTec Aureon 5.1 Sky
1046 * TerraTec Aureon 7.1 Space
1047 * TerraTec Aureon 7.1 Universe
1048 * TerraTec Phase 22
1049 * TerraTec Phase 28
1050 * AudioTrak Prodigy 7.1
Alexander Beregalov6ef10902008-08-13 00:10:55 +04001051 * AudioTrak Prodigy 7.1 LT
1052 * AudioTrak Prodigy 7.1 XT
1053 * AudioTrak Prodigy 7.1 HIFI
1054 * AudioTrak Prodigy 7.1 HD2
Takashi Iwaic9bce912005-05-24 13:41:03 +02001055 * AudioTrak Prodigy 192
1056 * Pontis MS300
1057 * Albatron K8X800 Pro II
1058 * Chaintech ZNF3-150
1059 * Chaintech ZNF3-250
1060 * Chaintech 9CJS
Takashi Iwai8cfbbac2005-05-27 12:10:40 +02001061 * Chaintech AV-710
Takashi Iwaic9bce912005-05-24 13:41:03 +02001062 * Shuttle SN25P
Shin-ya Okadaf31639b2007-10-23 15:08:18 +02001063 * Onkyo SE-90PCI
1064 * Onkyo SE-200PCI
Alexander Beregalov6ef10902008-08-13 00:10:55 +04001065 * ESI Juli@
Takashi Iwai72cbfd42009-05-06 17:33:19 +02001066 * ESI Maya44
Alexander Beregalov6ef10902008-08-13 00:10:55 +04001067 * Hercules Fortissimo IV
1068 * EGO-SYS WaveTerminal 192M
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069
1070 model - Use the given board model, one of the following:
Takashi Iwai7a6c8ff2006-01-13 13:56:33 +01001071 revo51, revo71, amp2000, prodigy71, prodigy71lt,
Alexander Beregalov6ef10902008-08-13 00:10:55 +04001072 prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
1073 juli, aureon51, aureon71, universe, ap192, k8x800,
1074 phase22, phase28, ms300, av710, se200pci, se90pci,
Takashi Iwai72cbfd42009-05-06 17:33:19 +02001075 fortissimo4, sn25p, WT192M, maya44
Linus Torvalds1da177e2005-04-16 15:20:36 -07001076
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001077 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001078
Takashi Iwaic9bce912005-05-24 13:41:03 +02001079 Note: The supported board is detected by reading EEPROM or PCI
1080 SSID (if EEPROM isn't available). You can override the
1081 model by passing "model" module option in case that the
1082 driver isn't configured properly or you want to try another
1083 type for testing.
1084
Giuliano Pochinidd7b2542006-06-28 13:53:41 +02001085 Module snd-indigo
1086 -----------------
1087
1088 Module for Echoaudio Indigo
1089
1090 This module supports multiple cards.
1091 The driver requires the firmware loader support on kernel.
1092
1093 Module snd-indigodj
1094 -------------------
1095
1096 Module for Echoaudio Indigo DJ
1097
1098 This module supports multiple cards.
1099 The driver requires the firmware loader support on kernel.
1100
1101 Module snd-indigoio
1102 -------------------
1103
1104 Module for Echoaudio Indigo IO
1105
1106 This module supports multiple cards.
1107 The driver requires the firmware loader support on kernel.
1108
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 Module snd-intel8x0
1110 -------------------
1111
1112 Module for AC'97 motherboards from Intel and compatibles.
1113 * Intel i810/810E, i815, i820, i830, i84x, MX440
Alexander Beregalov6ef10902008-08-13 00:10:55 +04001114 ICH5, ICH6, ICH7, 6300ESB, ESB2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115 * SiS 7012 (SiS 735)
Takashi Iwai89ac9c22006-01-24 10:36:57 +01001116 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1117 CK8, CK8S, MCP501
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118 * AMD AMD768, AMD8111
1119 * ALi m5455
1120
1121 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1122 ac97_quirk - AC'97 workaround for strange hardware
Takashi Iwai62430082005-09-05 17:12:29 +02001123 See "AC97 Quirk Option" section below.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001124 buggy_irq - Enable workaround for buggy interrupts on some
Takashi Iwaia06147d2005-09-08 19:54:17 +02001125 motherboards (default yes on nForce chips,
1126 otherwise off)
Carlos Garciac98be0c2014-04-04 22:31:00 -04001127 buggy_semaphore - Enable workaround for hardware with buggy
Takashi Iwaia06147d2005-09-08 19:54:17 +02001128 semaphores (e.g. on some ASUS laptops)
1129 (default off)
Takashi Iwai6c5cfd92006-11-28 17:18:25 +01001130 spdif_aclink - Use S/PDIF over AC-link instead of direct connection
1131 from the controller chip
1132 (0 = off, 1 = on, -1 = default)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133
Clemens Ladischb7fe4622005-10-04 08:46:51 +02001134 This module supports one chip and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135
1136 Note: the latest driver supports auto-detection of chip clock.
1137 if you still encounter too fast playback, specify the clock
1138 explicitly via the module option "ac97_clock=41194".
1139
1140 Joystick/MIDI ports are not supported by this driver. If your
1141 motherboard has these devices, use the ns558 or snd-mpu401
1142 modules, respectively.
1143
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144 The power-management is supported.
1145
1146 Module snd-intel8x0m
1147 --------------------
1148
1149 Module for Intel ICH (i8x0) chipset MC97 modems.
Takashi Iwai89ac9c22006-01-24 10:36:57 +01001150 * Intel i810/810E, i815, i820, i830, i84x, MX440
1151 ICH5, ICH6, ICH7
1152 * SiS 7013 (SiS 735)
1153 * NVidia NForce, NForce2, NForce2s, NForce3
1154 * AMD AMD8111
1155 * ALi m5455
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156
1157 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1158
Clemens Ladischb7fe4622005-10-04 08:46:51 +02001159 This module supports one card and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001160
1161 Note: The default index value of this module is -2, i.e. the first
1162 slot is excluded.
1163
Takashi Iwaia4efc232005-11-17 17:24:26 +01001164 The power-management is supported.
1165
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166 Module snd-interwave
1167 --------------------
1168
1169 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1170 and other sound cards based on AMD InterWave (tm) chip.
1171
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1173 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1174 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1175 effect - 1 = InterWave effects enable (default 0);
1176 requires 8 voices
Rene Herman64e0e2d2007-12-13 16:29:33 +01001177 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1178
1179 with isapnp=0, the following options are available:
1180
1181 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1182 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1183 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1184 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001186 This module supports multiple cards, autoprobe and ISA PnP.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187
1188 Module snd-interwave-stb
1189 ------------------------
1190
1191 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1192 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1193 circuit for extended control of bass, treble and master volume.
1194
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1196 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1197 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1198 effect - 1 = InterWave effects enable (default 0);
1199 requires 8 voices
Rene Herman64e0e2d2007-12-13 16:29:33 +01001200 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1201
1202 with isapnp=0, the following options are available:
1203
1204 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1205 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1206 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1207 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1208 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001210 This module supports multiple cards, autoprobe and ISA PnP.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211
Krzysztof Helt44eba3e2009-12-23 18:02:41 +01001212 Module snd-jazz16
1213 -------------------
1214
1215 Module for Media Vision Jazz16 chipset. The chipset consists of 3 chips:
1216 MVD1216 + MVA416 + MVA514.
1217
1218 port - port # for SB DSP chip (0x210,0x220,0x230,0x240,0x250,0x260)
1219 irq - IRQ # for SB DSP chip (3,5,7,9,10,15)
1220 dma8 - DMA # for SB DSP chip (1,3)
1221 dma16 - DMA # for SB DSP chip (5,7)
1222 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1223 mpu_irq - MPU-401 irq # (2,3,5,7)
1224
1225 This module supports multiple cards.
1226
Linus Torvalds1da177e2005-04-16 15:20:36 -07001227 Module snd-korg1212
1228 -------------------
1229
1230 Module for Korg 1212 IO PCI card
1231
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001232 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001233
Giuliano Pochinidd7b2542006-06-28 13:53:41 +02001234 Module snd-layla20
1235 ------------------
1236
1237 Module for Echoaudio Layla20
1238
1239 This module supports multiple cards.
1240 The driver requires the firmware loader support on kernel.
1241
1242 Module snd-layla24
1243 ------------------
1244
1245 Module for Echoaudio Layla24
1246
1247 This module supports multiple cards.
1248 The driver requires the firmware loader support on kernel.
1249
Takashi Iwaid43f30102011-05-03 16:14:46 +02001250 Module snd-lola
1251 ---------------
1252
1253 Module for Digigram Lola PCI-e boards
1254
1255 This module supports multiple cards.
1256
Takashi Iwai8338c302009-04-14 12:30:36 +02001257 Module snd-lx6464es
1258 -------------------
1259
1260 Module for Digigram LX6464ES boards
1261
1262 This module supports multiple cards.
1263
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264 Module snd-maestro3
1265 -------------------
1266
1267 Module for Allegro/Maestro3 chips
1268
1269 external_amp - enable external amp (enabled by default)
1270 amp_gpio - GPIO pin number for external amp (0-15) or
1271 -1 for default pin (8 for allegro, 1 for
1272 others)
1273
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001274 This module supports autoprobe and multiple chips.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275
1276 Note: the binding of amplifier is dependent on hardware.
1277 If there is no sound even though all channels are unmuted, try to
1278 specify other gpio connection via amp_gpio option.
1279 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1280 option.
1281
1282 The power-management is supported.
1283
Giuliano Pochinidd7b2542006-06-28 13:53:41 +02001284 Module snd-mia
1285 ---------------
1286
1287 Module for Echoaudio Mia
1288
1289 This module supports multiple cards.
1290 The driver requires the firmware loader support on kernel.
1291
Martin Langer1841f6132006-03-27 12:41:01 +02001292 Module snd-miro
1293 ---------------
1294
1295 Module for Miro soundcards: miroSOUND PCM 1 pro,
1296 miroSOUND PCM 12,
1297 miroSOUND PCM 20 Radio.
1298
1299 port - Port # (0x530,0x604,0xe80,0xf40)
1300 irq - IRQ # (5,7,9,10,11)
1301 dma1 - 1st dma # (0,1,3)
1302 dma2 - 2nd dma # (0,1)
1303 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1304 mpu_irq - MPU-401 irq # (5,7,9,10)
1305 fm_port - FM Port # (0x388)
1306 wss - enable WSS mode
1307 ide - enable onboard ide support
1308
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309 Module snd-mixart
1310 -----------------
1311
1312 Module for Digigram miXart8 sound cards.
1313
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001314 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001315 Note: One miXart8 board will be represented as 4 alsa cards.
1316 See MIXART.txt for details.
1317
1318 When the driver is compiled as a module and the hotplug firmware
1319 is supported, the firmware data is loaded via hotplug automatically.
1320 Install the necessary firmware files in alsa-firmware package.
1321 When no hotplug fw loader is available, you need to load the
1322 firmware via mixartloader utility in alsa-tools package.
1323
Giuliano Pochinidd7b2542006-06-28 13:53:41 +02001324 Module snd-mona
1325 ---------------
1326
1327 Module for Echoaudio Mona
1328
1329 This module supports multiple cards.
1330 The driver requires the firmware loader support on kernel.
1331
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332 Module snd-mpu401
1333 -----------------
1334
1335 Module for MPU-401 UART devices.
1336
1337 port - port number or -1 (disable)
1338 irq - IRQ number or -1 (disable)
1339 pnp - PnP detection - 0 = disable, 1 = enable (default)
1340
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001341 This module supports multiple devices and PnP.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001342
Takashi Iwaic96330b2009-01-28 08:23:03 +01001343 Module snd-msnd-classic
1344 -----------------------
1345
1346 Module for Turtle Beach MultiSound Classic, Tahiti or Monterey
1347 soundcards.
1348
1349 io - Port # for msnd-classic card
1350 irq - IRQ # for msnd-classic card
1351 mem - Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000,
1352 0xe0000 or 0xe8000)
1353 write_ndelay - enable write ndelay (default = 1)
1354 calibrate_signal - calibrate signal (default = 0)
1355 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1356 digital - Digital daughterboard present (default = 0)
1357 cfg - Config port (0x250, 0x260 or 0x270) default = PnP
1358 reset - Reset all devices
1359 mpu_io - MPU401 I/O port
1360 mpu_irq - MPU401 irq#
1361 ide_io0 - IDE port #0
1362 ide_io1 - IDE port #1
1363 ide_irq - IDE irq#
1364 joystick_io - Joystick I/O port
1365
1366 The driver requires firmware files "turtlebeach/msndinit.bin" and
1367 "turtlebeach/msndperm.bin" in the proper firmware directory.
1368
1369 See Documentation/sound/oss/MultiSound for important information
1370 about this driver. Note that it has been discontinued, but the
1371 Voyetra Turtle Beach knowledge base entry for it is still available
1372 at
Justin P. Mattock0ea6e612010-07-23 20:51:24 -07001373 http://www.turtlebeach.com
Takashi Iwaic96330b2009-01-28 08:23:03 +01001374
1375 Module snd-msnd-pinnacle
1376 ------------------------
1377
1378 Module for Turtle Beach MultiSound Pinnacle/Fiji soundcards.
1379
1380 io - Port # for pinnacle/fiji card
1381 irq - IRQ # for pinnalce/fiji card
1382 mem - Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000,
1383 0xe0000 or 0xe8000)
1384 write_ndelay - enable write ndelay (default = 1)
1385 calibrate_signal - calibrate signal (default = 0)
1386 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1387
1388 The driver requires firmware files "turtlebeach/pndspini.bin" and
1389 "turtlebeach/pndsperm.bin" in the proper firmware directory.
1390
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391 Module snd-mtpav
1392 ----------------
1393
1394 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1395 port).
1396
1397 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1398 irq - IRQ # for MTPAV (7,5, default=7)
1399 hwports - number of supported hardware ports, default=8.
1400
1401 Module supports only 1 card. This module has no enable option.
1402
Matthias Koenig68ab8012006-07-27 16:59:23 +02001403 Module snd-mts64
1404 ----------------
1405
1406 Module for Ego Systems (ESI) Miditerminal 4140
1407
1408 This module supports multiple devices.
1409 Requires parport (CONFIG_PARPORT).
1410
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 Module snd-nm256
1412 ----------------
1413
1414 Module for NeoMagic NM256AV/ZX chips
1415
1416 playback_bufsize - max playback frame size in kB (4-128kB)
1417 capture_bufsize - max capture frame size in kB (4-128kB)
1418 force_ac97 - 0 or 1 (disabled by default)
1419 buffer_top - specify buffer top address
1420 use_cache - 0 or 1 (disabled by default)
1421 vaio_hack - alias buffer_top=0x25a800
1422 reset_workaround - enable AC97 RESET workaround for some laptops
Takashi Iwaid1f38cf2005-10-19 16:04:27 +02001423 reset_workaround2 - enable extended AC97 RESET workaround for some
1424 other laptops
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425
Takashi Iwai8a3fb4d2005-10-20 17:10:49 +02001426 This module supports one chip and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427
1428 The power-management is supported.
1429
1430 Note: on some notebooks the buffer address cannot be detected
1431 automatically, or causes hang-up during initialization.
Matt LaPlantefff92892006-10-03 22:47:42 +02001432 In such a case, specify the buffer top address explicitly via
1433 the buffer_top option.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434 For example,
1435 Sony F250: buffer_top=0x25a800
1436 Sony F270: buffer_top=0x272800
1437 The driver supports only ac97 codec. It's possible to force
1438 to initialize/use ac97 although it's not detected. In such a
1439 case, use force_ac97=1 option - but *NO* guarantee whether it
1440 works!
1441
1442 Note: The NM256 chip can be linked internally with non-AC97
1443 codecs. This driver supports only the AC97 codec, and won't work
1444 with machines with other (most likely CS423x or OPL3SAx) chips,
1445 even though the device is detected in lspci. In such a case, try
1446 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
Takashi Iwai62430082005-09-05 17:12:29 +02001447 but some doesn't have ISA PnP. You'll need to specify isapnp=0
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448 and proper hardware parameters in the case without ISA PnP.
1449
1450 Note: some laptops need a workaround for AC97 RESET. For the
1451 known hardware like Dell Latitude LS and Sony PCG-F305, this
1452 workaround is enabled automatically. For other laptops with a
1453 hard freeze, you can try reset_workaround=1 option.
1454
Takashi Iwaid1f38cf2005-10-19 16:04:27 +02001455 Note: Dell Latitude CSx laptops have another problem regarding
1456 AC97 RESET. On these laptops, reset_workaround2 option is
1457 turned on as default. This option is worth to try if the
1458 previous reset_workaround option doesn't help.
1459
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460 Note: This driver is really crappy. It's a porting from the
1461 OSS driver, which is a result of black-magic reverse engineering.
1462 The detection of codec will fail if the driver is loaded *after*
1463 X-server as described above. You might be able to force to load
1464 the module, but it may result in hang-up. Hence, make sure that
1465 you load this module *before* X if you encounter this kind of
1466 problem.
1467
1468 Module snd-opl3sa2
1469 ------------------
1470
1471 Module for Yamaha OPL3-SA2/SA3 sound cards.
1472
Rene Herman64e0e2d2007-12-13 16:29:33 +01001473 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1474
1475 with isapnp=0, the following options are available:
1476
Linus Torvalds1da177e2005-04-16 15:20:36 -07001477 port - control port # for OPL3-SA chip (0x370)
1478 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1479 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1480 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1481 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1482 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1483 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1484 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001486 This module supports multiple cards and ISA PnP. It does not support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1488
1489 The power-management is supported.
1490
1491 Module snd-opti92x-ad1848
1492 -------------------------
1493
1494 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1495 Module works with OAK Mozart cards as well.
1496
Rene Herman64e0e2d2007-12-13 16:29:33 +01001497 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1498
1499 with isapnp=0, the following options are available:
1500
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1502 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1503 fm_port - port # for OPL3 device (0x388)
1504 irq - IRQ # for WSS chip (5,7,9,10,11)
1505 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1506 dma1 - first DMA # for WSS chip (0,1,3)
1507
1508 This module supports only one card, autoprobe and PnP.
1509
1510 Module snd-opti92x-cs4231
1511 -------------------------
1512
1513 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1514
Rene Herman64e0e2d2007-12-13 16:29:33 +01001515 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1516
1517 with isapnp=0, the following options are available:
1518
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1520 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1521 fm_port - port # for OPL3 device (0x388)
1522 irq - IRQ # for WSS chip (5,7,9,10,11)
1523 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1524 dma1 - first DMA # for WSS chip (0,1,3)
1525 dma2 - second DMA # for WSS chip (0,1,3)
1526
1527 This module supports only one card, autoprobe and PnP.
1528
1529 Module snd-opti93x
1530 ------------------
1531
1532 Module for sound cards based on OPTi 82c93x chips.
1533
Rene Herman64e0e2d2007-12-13 16:29:33 +01001534 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1535
1536 with isapnp=0, the following options are available:
1537
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1539 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1540 fm_port - port # for OPL3 device (0x388)
1541 irq - IRQ # for WSS chip (5,7,9,10,11)
1542 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1543 dma1 - first DMA # for WSS chip (0,1,3)
1544 dma2 - second DMA # for WSS chip (0,1,3)
1545
1546 This module supports only one card, autoprobe and PnP.
1547
Clemens Ladisch48a8a262008-01-21 08:43:06 +01001548 Module snd-oxygen
1549 -----------------
1550
Clemens Ladisch66410bf2011-01-10 16:20:29 +01001551 Module for sound cards based on the C-Media CMI8786/8787/8788 chip:
Clemens Ladisch48a8a262008-01-21 08:43:06 +01001552 * Asound A-8788
Clemens Ladisch76bc7a02012-05-01 17:40:30 +02001553 * Asus Xonar DG/DGX
Clemens Ladisch48a8a262008-01-21 08:43:06 +01001554 * AuzenTech X-Meridian
Clemens Ladisch8443d2e2011-01-10 16:17:26 +01001555 * AuzenTech X-Meridian 2G
Clemens Ladisch48a8a262008-01-21 08:43:06 +01001556 * Bgears b-Enspirer
1557 * Club3D Theatron DTS
Clemens Ladischde04b102008-11-26 10:37:23 +01001558 * HT-Omega Claro (plus)
1559 * HT-Omega Claro halo (XT)
Clemens Ladisch31f86ba2010-11-02 17:18:23 +01001560 * Kuroutoshikou CMI8787-HG2PCI
Clemens Ladisch48a8a262008-01-21 08:43:06 +01001561 * Razer Barracuda AC-1
1562 * Sondigo Inferno
Clemens Ladisch45c1de82010-11-02 17:08:37 +01001563 * TempoTec HiFier Fantasia
Clemens Ladisch2146dcf2010-11-03 12:26:35 +01001564 * TempoTec HiFier Serenade
Clemens Ladisch48a8a262008-01-21 08:43:06 +01001565
1566 This module supports autoprobe and multiple cards.
1567
Stas Sergeevd08cd582008-03-06 11:01:44 +01001568 Module snd-pcsp
1569 -----------------
1570
1571 Module for internal PC-Speaker.
1572
Stas Sergeevbcc2c6b2009-11-01 11:13:19 +01001573 nopcm - Disable PC-Speaker PCM sound. Only beeps remain.
Stas Sergeevd08cd582008-03-06 11:01:44 +01001574 nforce_wa - enable NForce chipset workaround. Expect bad sound.
1575
1576 This module supports system beeps, some kind of PCM playback and
1577 even a few mixer controls.
1578
Markus Bollingere12229b2005-12-06 13:55:26 +01001579 Module snd-pcxhr
1580 ----------------
1581
1582 Module for Digigram PCXHR boards
1583
1584 This module supports multiple cards.
1585
Matthias Koenig757e1192007-01-25 13:15:05 +01001586 Module snd-portman2x4
1587 ---------------------
1588
1589 Module for Midiman Portman 2x4 parallel port MIDI interface
1590
1591 This module supports multiple cards.
1592
Linus Torvalds1da177e2005-04-16 15:20:36 -07001593 Module snd-powermac (on ppc only)
1594 ---------------------------------
1595
1596 Module for PowerMac, iMac and iBook on-board soundchips
1597
1598 enable_beep - enable beep using PCM (enabled as default)
1599
1600 Module supports autoprobe a chip.
1601
Masanari Iida40e47122012-03-04 23:16:11 +09001602 Note: the driver may have problems regarding endianness.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001603
1604 The power-management is supported.
1605
Takashi Iwai2c484df2005-06-30 18:54:04 +02001606 Module snd-pxa2xx-ac97 (on arm only)
1607 ------------------------------------
1608
1609 Module for AC97 driver for the Intel PXA2xx chip
1610
1611 For ARM architecture only.
1612
Takashi Iwaia4efc232005-11-17 17:24:26 +01001613 The power-management is supported.
1614
Peter Gruber109a9632006-03-27 13:10:28 +02001615 Module snd-riptide
1616 ------------------
1617
1618 Module for Conexant Riptide chip
1619
1620 joystick_port - Joystick port # (default: 0x200)
1621 mpu_port - MPU401 port # (default: 0x330)
1622 opl3_port - OPL3 port # (default: 0x388)
1623
1624 This module supports multiple cards.
1625 The driver requires the firmware loader support on kernel.
1626 You need to install the firmware file "riptide.hex" to the standard
1627 firmware path (e.g. /lib/firmware).
1628
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629 Module snd-rme32
1630 ----------------
1631
1632 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1633 Prodif96 and Prodif Gold) sound cards.
1634
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001635 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001636
1637 Module snd-rme96
1638 ----------------
1639
1640 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1641
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001642 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001643
1644 Module snd-rme9652
1645 ------------------
1646
1647 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1648
1649 precise_ptr - Enable precise pointer (doesn't work reliably).
1650 (default = 0)
1651
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001652 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001653
1654 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1655 module did formerly. It will allocate the buffers in advance
1656 when any RME9652 cards are found. To make the buffer
1657 allocation sure, load snd-page-alloc module in the early
Takashi Iwaib6a96912005-05-30 18:27:03 +02001658 stage of boot sequence. See "Early Buffer Allocation"
1659 section.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001660
1661 Module snd-sa11xx-uda1341 (on arm only)
1662 ---------------------------------------
1663
1664 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1665
1666 Module supports only one card.
1667 Module has no enable and index options.
1668
Takashi Iwaia4efc232005-11-17 17:24:26 +01001669 The power-management is supported.
1670
Linus Torvalds1da177e2005-04-16 15:20:36 -07001671 Module snd-sb8
1672 --------------
1673
1674 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1675 SoundBlaster 2.0,
1676 SoundBlaster Pro
1677
1678 port - port # for SB DSP chip (0x220,0x240,0x260)
1679 irq - IRQ # for SB DSP chip (5,7,9,10)
1680 dma8 - DMA # for SB DSP chip (1,3)
1681
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001682 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683
Takashi Iwaia4efc232005-11-17 17:24:26 +01001684 The power-management is supported.
1685
Linus Torvalds1da177e2005-04-16 15:20:36 -07001686 Module snd-sb16 and snd-sbawe
1687 -----------------------------
1688
1689 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1690 SoundBlaster AWE 32 (PnP),
1691 SoundBlaster AWE 64 PnP
1692
Rene Herman64e0e2d2007-12-13 16:29:33 +01001693 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1694 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1695 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1696
1697 with isapnp=0, the following options are available:
1698
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1700 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1701 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1702 (snd-sbawe module only)
1703 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1704 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1705 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001706
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001707 This module supports multiple cards, autoprobe and ISA PnP.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001708
1709 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1710 disable 16bit DMA with dma16 = -1 module parameter.
1711 Also, all Sound Blaster 16 type cards can operate in 16-bit
1712 half duplex mode through 8-bit DMA channel by disabling their
1713 16-bit DMA channel.
1714
Takashi Iwaia4efc232005-11-17 17:24:26 +01001715 The power-management is supported.
1716
Takashi Iwai074a6e92007-09-11 22:10:14 +02001717 Module snd-sc6000
1718 -----------------
1719
Krzysztof Heltb0ec3a32009-05-03 10:39:19 +02001720 Module for Gallant SC-6000 soundcard and later models: SC-6600
1721 and SC-7000.
Takashi Iwai074a6e92007-09-11 22:10:14 +02001722
1723 port - Port # (0x220 or 0x240)
1724 mss_port - MSS Port # (0x530 or 0xe80)
1725 irq - IRQ # (5,7,9,10,11)
Krzysztof Helt7b758d22007-09-17 14:42:49 +02001726 mpu_irq - MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
Takashi Iwai074a6e92007-09-11 22:10:14 +02001727 dma - DMA # (1,3,0)
Krzysztof Heltb0ec3a32009-05-03 10:39:19 +02001728 joystick - Enable gameport - 0 = disable (default), 1 = enable
Takashi Iwai074a6e92007-09-11 22:10:14 +02001729
1730 This module supports multiple cards.
1731
1732 This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
1733
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734 Module snd-sscape
1735 -----------------
1736
Krzysztof Heltacd471002009-10-01 00:10:34 +02001737 Module for ENSONIQ SoundScape cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738
1739 port - Port # (PnP setup)
Takashi Iwaiadf12952007-09-17 16:26:16 +02001740 wss_port - WSS Port # (PnP setup)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001741 irq - IRQ # (PnP setup)
1742 mpu_irq - MPU-401 IRQ # (PnP setup)
1743 dma - DMA # (PnP setup)
Takashi Iwaiadf12952007-09-17 16:26:16 +02001744 dma2 - 2nd DMA # (PnP setup, -1 to disable)
Krzysztof Helt1cb0fde2009-10-05 18:18:57 +02001745 joystick - Enable gameport - 0 = disable (default), 1 = enable
Linus Torvalds1da177e2005-04-16 15:20:36 -07001746
Krzysztof Heltacd471002009-10-01 00:10:34 +02001747 This module supports multiple cards.
1748
1749 The driver requires the firmware loader support on kernel.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001750
1751 Module snd-sun-amd7930 (on sparc only)
1752 --------------------------------------
1753
1754 Module for AMD7930 sound chips found on Sparcs.
1755
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001756 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001757
1758 Module snd-sun-cs4231 (on sparc only)
1759 -------------------------------------
1760
1761 Module for CS4231 sound chips found on Sparcs.
1762
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001763 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001764
Takashi Iwai1bd9deb2005-06-30 18:26:20 +02001765 Module snd-sun-dbri (on sparc only)
1766 -----------------------------------
1767
1768 Module for DBRI sound chips found on Sparcs.
1769
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001770 This module supports multiple cards.
Takashi Iwai1bd9deb2005-06-30 18:26:20 +02001771
Linus Torvalds1da177e2005-04-16 15:20:36 -07001772 Module snd-wavefront
1773 --------------------
1774
1775 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1776
Rene Herman64e0e2d2007-12-13 16:29:33 +01001777 use_cs4232_midi - Use CS4232 MPU-401 interface
1778 (inaccessibly located inside your computer)
1779 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1780
1781 with isapnp=0, the following options are available:
1782
Linus Torvalds1da177e2005-04-16 15:20:36 -07001783 cs4232_pcm_port - Port # for CS4232 PCM interface.
1784 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1785 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1786 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
Linus Torvalds1da177e2005-04-16 15:20:36 -07001787 ics2115_port - Port # for ICS2115
1788 ics2115_irq - IRQ # for ICS2115
1789 fm_port - FM OPL-3 Port #
1790 dma1 - DMA1 # for CS4232 PCM interface.
1791 dma2 - DMA2 # for CS4232 PCM interface.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001792
Takashi Iwaic2b12392007-08-21 15:20:26 +02001793 The below are options for wavefront_synth features:
1794 wf_raw - Assume that we need to boot the OS (default:no)
1795 If yes, then during driver loading, the state of the board is
1796 ignored, and we reset the board and load the firmware anyway.
1797 fx_raw - Assume that the FX process needs help (default:yes)
1798 If false, we'll leave the FX processor in whatever state it is
1799 when the driver is loaded. The default is to download the
1800 microprogram and associated coefficients to set it up for
1801 "default" operation, whatever that means.
1802 debug_default - Debug parameters for card initialization
1803 wait_usecs - How long to wait without sleeping, usecs
1804 (default:150)
1805 This magic number seems to give pretty optimal throughput
1806 based on my limited experimentation.
1807 If you want to play around with it and find a better value, be
1808 my guest. Remember, the idea is to get a number that causes us
1809 to just busy wait for as many WaveFront commands as possible,
1810 without coming up with a number so large that we hog the whole
1811 CPU.
1812 Specifically, with this number, out of about 134,000 status
1813 waits, only about 250 result in a sleep.
1814 sleep_interval - How long to sleep when waiting for reply
1815 (default: 100)
1816 sleep_tries - How many times to try sleeping during a wait
1817 (default: 50)
1818 ospath - Pathname to processed ICS2115 OS firmware
1819 (default:wavefront.os)
1820 The path name of the ISC2115 OS firmware. In the recent
1821 version, it's handled via firmware loader framework, so it
1822 must be installed in the proper path, typically,
1823 /lib/firmware.
1824 reset_time - How long to wait for a reset to take effect
1825 (default:2)
1826 ramcheck_time - How many seconds to wait for the RAM test
1827 (default:20)
1828 osrun_time - How many seconds to wait for the ICS2115 OS
1829 (default:10)
1830
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001831 This module supports multiple cards and ISA PnP.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001832
Takashi Iwaic2b12392007-08-21 15:20:26 +02001833 Note: the firmware file "wavefront.os" was located in the earlier
1834 version in /etc. Now it's loaded via firmware loader, and
1835 must be in the proper firmware path, such as /lib/firmware.
1836 Copy (or symlink) the file appropriately if you get an error
1837 regarding firmware downloading after upgrading the kernel.
1838
Linus Torvalds1da177e2005-04-16 15:20:36 -07001839 Module snd-sonicvibes
1840 ---------------------
1841
1842 Module for S3 SonicVibes PCI sound cards.
1843 * PINE Schubert 32 PCI
1844
1845 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1846 - SoundCard must have onboard SRAM for this.
1847 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1848
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001849 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001850
1851 Module snd-serial-u16550
1852 ------------------------
1853
1854 Module for UART16550A serial MIDI ports.
1855
1856 port - port # for UART16550A chip
1857 irq - IRQ # for UART16550A chip, -1 = poll mode
1858 speed - speed in bauds (9600,19200,38400,57600,115200)
1859 38400 = default
1860 base - base for divisor in bauds (57600,115200,230400,460800)
1861 115200 = default
1862 outs - number of MIDI ports in a serial port (1-4)
1863 1 = default
1864 adaptor - Type of adaptor.
1865 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1866 3 = MS-124W M/B, 4 = Generic
1867
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001868 This module supports multiple cards. This module does not support autoprobe
Linus Torvalds1da177e2005-04-16 15:20:36 -07001869 thus the main port must be specified!!! Other options are optional.
1870
1871 Module snd-trident
1872 ------------------
1873
1874 Module for Trident 4DWave DX/NX sound cards.
1875 * Best Union Miss Melody 4DWave PCI
1876 * HIS 4DWave PCI
1877 * Warpspeed ONSpeed 4DWave PCI
1878 * AzTech PCI 64-Q3D
1879 * Addonics SV 750
1880 * CHIC True Sound 4Dwave
1881 * Shark Predator4D-PCI
1882 * Jaton SonicWave 4D
Alexander Beregalov6ef10902008-08-13 00:10:55 +04001883 * SiS SI7018 PCI Audio
1884 * Hoontech SoundTrack Digital 4DWave NX
Linus Torvalds1da177e2005-04-16 15:20:36 -07001885
1886 pcm_channels - max channels (voices) reserved for PCM
1887 wavetable_size - max wavetable size in kB (4-?kb)
1888
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001889 This module supports multiple cards and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001890
1891 The power-management is supported.
1892
Clemens Ladisch63978ab2009-12-14 12:48:35 +01001893 Module snd-ua101
1894 ----------------
1895
Clemens Ladische584bc32010-03-01 16:20:37 +01001896 Module for the Edirol UA-101/UA-1000 audio/MIDI interfaces.
Clemens Ladisch63978ab2009-12-14 12:48:35 +01001897
1898 This module supports multiple devices, autoprobe and hotplugging.
1899
Linus Torvalds1da177e2005-04-16 15:20:36 -07001900 Module snd-usb-audio
1901 --------------------
1902
1903 Module for USB audio and USB MIDI devices.
1904
1905 vid - Vendor ID for the device (optional)
1906 pid - Product ID for the device (optional)
Takashi Iwai8a8f2662008-08-13 15:27:43 +02001907 nrpacks - Max. number of packets per URB (default: 8)
Thibault LE MEURe3113342006-03-14 11:44:53 +01001908 device_setup - Device specific magic number (optional)
1909 - Influence depends on the device
1910 - Default: 0x0000
Takashi Iwai7a9b8062008-08-13 15:40:53 +02001911 ignore_ctl_error - Ignore any USB-controller regarding mixer
1912 interface (default: no)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001913
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001914 This module supports multiple devices, autoprobe and hotplugging.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001915
Takashi Iwai8a8f2662008-08-13 15:27:43 +02001916 NB: nrpacks parameter can be modified dynamically via sysfs.
1917 Don't put the value over 20. Changing via sysfs has no sanity
1918 check.
Takashi Iwai7a9b8062008-08-13 15:40:53 +02001919 NB: ignore_ctl_error=1 may help when you get an error at accessing
1920 the mixer element such as URB error -22. This happens on some
1921 buggy USB device or the controller.
Takashi Iwai8a8f2662008-08-13 15:27:43 +02001922
Daniel Mack523f1dc2007-03-26 19:11:24 +02001923 Module snd-usb-caiaq
1924 --------------------
1925
1926 Module for caiaq UB audio interfaces,
1927 * Native Instruments RigKontrol2
1928 * Native Instruments Kore Controller
1929 * Native Instruments Audio Kontrol 1
1930 * Native Instruments Audio 8 DJ
1931
1932 This module supports multiple devices, autoprobe and hotplugging.
1933
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934 Module snd-usb-usx2y
1935 --------------------
1936
1937 Module for Tascam USB US-122, US-224 and US-428 devices.
1938
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01001939 This module supports multiple devices, autoprobe and hotplugging.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940
1941 Note: you need to load the firmware via usx2yloader utility included
1942 in alsa-tools and alsa-firmware packages.
1943
1944 Module snd-via82xx
1945 ------------------
1946
1947 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
Sergey Vlasov2d7eb7c2005-04-11 15:04:33 +02001948 8233A, 8233C, 8235, 8237 (south) bridge.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001949
1950 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1951 [VIA686A/686B only]
1952 joystick - Enable joystick (default off) [VIA686A/686B only]
1953 ac97_clock - AC'97 codec clock base (default 48000Hz)
1954 dxs_support - support DXS channels,
Sergey Vlasov2d7eb7c2005-04-11 15:04:33 +02001955 0 = auto (default), 1 = enable, 2 = disable,
1956 3 = 48k only, 4 = no VRA, 5 = enable any sample
1957 rate and different sample rates on different
1958 channels
1959 [VIA8233/C, 8235, 8237 only]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960 ac97_quirk - AC'97 workaround for strange hardware
Takashi Iwai62430082005-09-05 17:12:29 +02001961 See "AC97 Quirk Option" section below.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001962
Clemens Ladischb7fe4622005-10-04 08:46:51 +02001963 This module supports one chip and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964
1965 Note: on some SMP motherboards like MSI 694D the interrupts might
1966 not be generated properly. In such a case, please try to
1967 set the SMP (or MPS) version on BIOS to 1.1 instead of
1968 default value 1.4. Then the interrupt number will be
1969 assigned under 15. You might also upgrade your BIOS.
1970
Sergey Vlasov2d7eb7c2005-04-11 15:04:33 +02001971 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972 channels as the first PCM. On these channels, up to 4
Sergey Vlasov2d7eb7c2005-04-11 15:04:33 +02001973 streams can be played at the same time, and the controller
1974 can perform sample rate conversion with separate rates for
1975 each channel.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001976 As default (dxs_support = 0), 48k fixed rate is chosen
1977 except for the known devices since the output is often
1978 noisy except for 48k on some mother boards due to the
1979 bug of BIOS.
Sergey Vlasov2d7eb7c2005-04-11 15:04:33 +02001980 Please try once dxs_support=5 and if it works on other
Linus Torvalds1da177e2005-04-16 15:20:36 -07001981 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1982 know the PCI subsystem vendor/device id's (output of
1983 "lspci -nv").
Takashi Iwaicdc27f32005-05-27 11:11:02 +02001984 If dxs_support=5 does not work, try dxs_support=4; if it
1985 doesn't work too, try dxs_support=1. (dxs_support=1 is
Takashi Iwai62430082005-09-05 17:12:29 +02001986 usually for old motherboards. The correct implemented
Takashi Iwaicdc27f32005-05-27 11:11:02 +02001987 board should work with 4 or 5.) If it still doesn't
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988 work and the default setting is ok, dxs_support=3 is the
1989 right choice. If the default setting doesn't work at all,
1990 try dxs_support=2 to disable the DXS channels.
1991 In any cases, please let us know the result and the
Takashi Iwai62430082005-09-05 17:12:29 +02001992 subsystem vendor/device ids. See "Links and Addresses"
1993 below.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001994
1995 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
Takashi Iwai62430082005-09-05 17:12:29 +02001996 additionally. The mpu_port option is for VIA686 chips only.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997
Takashi Iwaia4efc232005-11-17 17:24:26 +01001998 The power-management is supported.
1999
Linus Torvalds1da177e2005-04-16 15:20:36 -07002000 Module snd-via82xx-modem
2001 ------------------------
2002
2003 Module for VIA82xx AC97 modem
2004
2005 ac97_clock - AC'97 codec clock base (default 48000Hz)
2006
Clemens Ladischb7fe4622005-10-04 08:46:51 +02002007 This module supports one card and autoprobe.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002008
2009 Note: The default index value of this module is -2, i.e. the first
2010 slot is excluded.
2011
Takashi Iwaia4efc232005-11-17 17:24:26 +01002012 The power-management is supported.
2013
Linus Torvalds1da177e2005-04-16 15:20:36 -07002014 Module snd-virmidi
2015 ------------------
2016
2017 Module for virtual rawmidi devices.
2018 This module creates virtual rawmidi devices which communicate
2019 to the corresponding ALSA sequencer ports.
2020
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01002021 midi_devs - MIDI devices # (1-4, default=4)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002022
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01002023 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002024
Clemens Ladisch48a8a262008-01-21 08:43:06 +01002025 Module snd-virtuoso
2026 -------------------
2027
Clemens Ladischb532d6b2011-01-10 16:23:57 +01002028 Module for sound cards based on the Asus AV66/AV100/AV200 chips,
2029 i.e., Xonar D1, DX, D2, D2X, DS, Essence ST (Deluxe), Essence STX,
2030 HDAV1.3 (Deluxe), and HDAV1.3 Slim.
Clemens Ladisch48a8a262008-01-21 08:43:06 +01002031
2032 This module supports autoprobe and multiple cards.
2033
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034 Module snd-vx222
2035 ----------------
2036
2037 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
2038
2039 mic - Enable Microphone on V222 Mic (NYI)
2040 ibl - Capture IBL size. (default = 0, minimum size)
2041
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01002042 This module supports multiple cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002043
2044 When the driver is compiled as a module and the hotplug firmware
2045 is supported, the firmware data is loaded via hotplug automatically.
2046 Install the necessary firmware files in alsa-firmware package.
2047 When no hotplug fw loader is available, you need to load the
2048 firmware via vxloader utility in alsa-tools package. To invoke
Lucas De Marchi970e2482012-03-30 13:37:16 -07002049 vxloader automatically, add the following to /etc/modprobe.d/alsa.conf
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050
2051 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
2052
2053 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
2054 /etc/modules.conf, instead.)
2055 IBL size defines the interrupts period for PCM. The smaller size
2056 gives smaller latency but leads to more CPU consumption, too.
2057 The size is usually aligned to 126. As default (=0), the smallest
2058 size is chosen. The possible IBL values can be found in
2059 /proc/asound/cardX/vx-status proc file.
2060
Takashi Iwaia4efc232005-11-17 17:24:26 +01002061 The power-management is supported.
2062
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063 Module snd-vxpocket
2064 -------------------
2065
Takashi Iwai6d00a312005-06-30 13:40:51 +02002066 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002067
2068 ibl - Capture IBL size. (default = 0, minimum size)
2069
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01002070 This module supports multiple cards. The module is compiled only when
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071 PCMCIA is supported on kernel.
2072
Takashi Iwai62430082005-09-05 17:12:29 +02002073 With the older 2.6.x kernel, to activate the driver via the card
2074 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
2075 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
2076 longer require a config file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077
2078 When the driver is compiled as a module and the hotplug firmware
2079 is supported, the firmware data is loaded via hotplug automatically.
2080 Install the necessary firmware files in alsa-firmware package.
2081 When no hotplug fw loader is available, you need to load the
2082 firmware via vxloader utility in alsa-tools package.
2083
2084 About capture IBL, see the description of snd-vx222 module.
2085
Takashi Iwaied7cbe32006-05-11 11:30:10 +02002086 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
Takashi Iwai62430082005-09-05 17:12:29 +02002087 ALSA 1.0.10.
2088
Takashi Iwaia4efc232005-11-17 17:24:26 +01002089 The power-management is supported.
2090
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091 Module snd-ymfpci
2092 -----------------
2093
2094 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
2095
2096 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
2097 1 (auto-detect for YMF744/754 only)
2098 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
2099 1 (auto-detect for YMF744/754 only)
2100 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
2101 1 (auto-detect)
2102 rear_switch - enable shared rear/line-in switch (bool)
2103
Clemens Ladisch0ef797c2005-11-21 07:30:20 +01002104 This module supports autoprobe and multiple chips.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105
2106 The power-management is supported.
2107
2108 Module snd-pdaudiocf
2109 --------------------
2110
2111 Module for Sound Core PDAudioCF sound card.
2112
Takashi Iwaia4efc232005-11-17 17:24:26 +01002113 The power-management is supported.
2114
Linus Torvalds1da177e2005-04-16 15:20:36 -07002115
Takashi Iwai62430082005-09-05 17:12:29 +02002116AC97 Quirk Option
2117=================
2118
2119The ac97_quirk option is used to enable/override the workaround for
2120specific devices on drivers for on-board AC'97 controllers like
2121snd-intel8x0. Some hardware have swapped output pins between Master
2122and Headphone, or Surround (thanks to confusion of AC'97
2123specifications from version to version :-)
2124
2125The driver provides the auto-detection of known problematic devices,
2126but some might be unknown or wrongly detected. In such a case, pass
2127the proper value with this option.
2128
2129The following strings are accepted:
2130 - default Don't override the default setting
Takashi Iwai10e4097f2005-11-17 11:04:55 +01002131 - none Disable the quirk
Takashi Iwai62430082005-09-05 17:12:29 +02002132 - hp_only Bind Master and Headphone controls as a single control
2133 - swap_hp Swap headphone and master controls
2134 - swap_surround Swap master and surround controls
2135 - ad_sharing For AD1985, turn on OMS bit and use headphone
2136 - alc_jack For ALC65x, turn on the jack sense mode
2137 - inv_eapd Inverted EAPD implementation
2138 - mute_led Bind EAPD bit for turning on/off mute LED
2139
2140For backward compatibility, the corresponding integer value -1, 0,
2141... are accepted, too.
2142
2143For example, if "Master" volume control has no effect on your device
2144but only "Headphone" does, pass ac97_quirk=hp_only module option.
2145
2146
Linus Torvalds1da177e2005-04-16 15:20:36 -07002147Configuring Non-ISAPNP Cards
2148============================
2149
2150When the kernel is configured with ISA-PnP support, the modules
2151supporting the isapnp cards will have module options "isapnp".
2152If this option is set, *only* the ISA-PnP devices will be probed.
2153For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
2154together with the proper i/o and irq configuration.
2155
2156When the kernel is configured without ISA-PnP support, isapnp option
2157will be not built in.
2158
2159
2160Module Autoloading Support
2161==========================
2162
2163The ALSA drivers can be loaded automatically on demand by defining
2164module aliases. The string 'snd-card-%1' is requested for ALSA native
2165devices where %i is sound card number from zero to seven.
2166
2167To auto-load an ALSA driver for OSS services, define the string
2168'sound-slot-%i' where %i means the slot number for OSS, which
2169corresponds to the card index of ALSA. Usually, define this
Tobias Klauserd533f672005-09-10 00:26:46 -07002170as the same card module.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002171
2172An example configuration for a single emu10k1 card is like below:
Lucas De Marchi970e2482012-03-30 13:37:16 -07002173----- /etc/modprobe.d/alsa.conf
Linus Torvalds1da177e2005-04-16 15:20:36 -07002174alias snd-card-0 snd-emu10k1
2175alias sound-slot-0 snd-emu10k1
Lucas De Marchi970e2482012-03-30 13:37:16 -07002176----- /etc/modprobe.d/alsa.conf
Linus Torvalds1da177e2005-04-16 15:20:36 -07002177
2178The available number of auto-loaded sound cards depends on the module
2179option "cards_limit" of snd module. As default it's set to 1.
2180To enable the auto-loading of multiple cards, specify the number of
2181sound cards in that option.
2182
2183When multiple cards are available, it'd better to specify the index
2184number for each card via module option, too, so that the order of
2185cards is kept consistent.
2186
2187An example configuration for two sound cards is like below:
2188
Lucas De Marchi970e2482012-03-30 13:37:16 -07002189----- /etc/modprobe.d/alsa.conf
Linus Torvalds1da177e2005-04-16 15:20:36 -07002190# ALSA portion
2191options snd cards_limit=2
2192alias snd-card-0 snd-interwave
2193alias snd-card-1 snd-ens1371
2194options snd-interwave index=0
2195options snd-ens1371 index=1
2196# OSS/Free portion
2197alias sound-slot-0 snd-interwave
2198alias sound-slot-1 snd-ens1371
Lucas De Marchi970e2482012-03-30 13:37:16 -07002199----- /etc/modprobe.d/alsa.conf
Linus Torvalds1da177e2005-04-16 15:20:36 -07002200
2201In this example, the interwave card is always loaded as the first card
2202(index 0) and ens1371 as the second (index 1).
2203
Takashi Iwai304cd072007-10-26 15:10:15 +02002204Alternative (and new) way to fixate the slot assignment is to use
2205"slots" option of snd module. In the case above, specify like the
2206following:
2207
2208options snd slots=snd-interwave,snd-ens1371
2209
2210Then, the first slot (#0) is reserved for snd-interwave driver, and
2211the second (#1) for snd-ens1371. You can omit index option in each
2212driver if slots option is used (although you can still have them at
2213the same time as long as they don't conflict).
2214
2215The slots option is especially useful for avoiding the possible
2216hot-plugging and the resultant slot conflict. For example, in the
2217case above again, the first two slots are already reserved. If any
2218other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
2219snd-ens1371, it will be assigned to the third or later slot.
2220
Takashi Iwaia93bbaa2008-05-27 17:59:24 +02002221When a module name is given with '!', the slot will be given for any
2222modules but that name. For example, "slots=!snd-pcsp" will reserve
2223the first slot for any modules but snd-pcsp.
2224
Linus Torvalds1da177e2005-04-16 15:20:36 -07002225
2226ALSA PCM devices to OSS devices mapping
2227=======================================
2228
2229/dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
2230/dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
2231/dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
2232/dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
2233/dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
2234/dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
2235/dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
2236/dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
2237/dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
2238
2239The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
2240sound card number and second means device number. The ALSA devices
2241have either 'c' or 'p' suffix indicating the direction, capture and
2242playback, respectively.
2243
2244Please note that the device mapping above may be varied via the module
2245options of snd-pcm-oss module.
2246
2247
Linus Torvalds1da177e2005-04-16 15:20:36 -07002248Proc interfaces (/proc/asound)
2249==============================
2250
2251/proc/asound/card#/pcm#[cp]/oss
2252-------------------------------
Sylvestre Ledruf65e51d2011-04-04 15:04:46 -07002253 String "erase" - erase all additional information about OSS applications
Linus Torvalds1da177e2005-04-16 15:20:36 -07002254 String "<app_name> <fragments> <fragment_size> [<options>]"
2255
2256 <app_name> - name of application with (higher priority) or without path
2257 <fragments> - number of fragments or zero if auto
2258 <fragment_size> - size of fragment in bytes or zero if auto
2259 <options> - optional parameters
2260 - disable the application tries to open a pcm device for
2261 this channel but does not want to use it.
2262 (Cause a bug or mmap needs)
2263 It's good for Quake etc...
2264 - direct don't use plugins
2265 - block force block mode (rvplayer)
2266 - non-block force non-block mode
2267 - whole-frag write only whole fragments (optimization affecting
2268 playback only)
2269 - no-silence do not fill silence ahead to avoid clicks
Takashi Iwai10f69f92005-09-08 13:48:34 +02002270 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
2271 instead of filled blocks
Linus Torvalds1da177e2005-04-16 15:20:36 -07002272
2273 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
2274 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
2275 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
2276
2277
Takashi Iwaib6a96912005-05-30 18:27:03 +02002278Early Buffer Allocation
2279=======================
2280
2281Some drivers (e.g. hdsp) require the large contiguous buffers, and
2282sometimes it's too late to find such spaces when the driver module is
2283actually loaded due to memory fragmentation. You can pre-allocate the
2284PCM buffers by loading snd-page-alloc module and write commands to its
2285proc file in prior, for example, in the early boot stage like
2286/etc/init.d/*.local scripts.
2287
2288Reading the proc file /proc/drivers/snd-page-alloc shows the current
2289usage of page allocation. In writing, you can send the following
2290commands to the snd-page-alloc driver:
2291
2292 - add VENDOR DEVICE MASK SIZE BUFFERS
2293
2294 VENDOR and DEVICE are PCI vendor and device IDs. They take
2295 integer numbers (0x prefix is needed for the hex).
2296 MASK is the PCI DMA mask. Pass 0 if not restricted.
2297 SIZE is the size of each buffer to allocate. You can pass
2298 k and m suffix for KB and MB. The max number is 16MB.
2299 BUFFERS is the number of buffers to allocate. It must be greater
2300 than 0. The max number is 4.
2301
2302 - erase
2303
2304 This will erase the all pre-allocated buffers which are not in
2305 use.
2306
2307
Takashi Iwai62430082005-09-05 17:12:29 +02002308Links and Addresses
2309===================
Linus Torvalds1da177e2005-04-16 15:20:36 -07002310
2311 ALSA project homepage
2312 http://www.alsa-project.org
2313
Takashi Iwai30bc4482008-12-09 08:23:45 +01002314 Kernel Bugzilla
2315 http://bugzilla.kernel.org/
Takashi Iwai62430082005-09-05 17:12:29 +02002316
2317 ALSA Developers ML
Rene Herman45051792007-03-21 12:05:06 +01002318 mailto:alsa-devel@alsa-project.org
Takashi Iwai30bc4482008-12-09 08:23:45 +01002319
2320 alsa-info.sh script
2321 http://www.alsa-project.org/alsa-info.sh