forked from Minki/linux
d8cac6207e
Patrick May reported that his sound card with CMI8378 chip causes a
crash / reboot when accessing the MIDI port that isn't actually
present on the board. Moreover, despite of the documentation,
passing mpu_port=0 doesn't disable the MIDI port on this board.
It implies that the chip is a newer revision and the MPU401 port is
integrated and mapped on the PCI register. For this chip model, the
driver enables the MPU port unconditionally, so far.
Although fixing the unexpected reboot would be the best solution, it's
not so trivial to identify the cause. So, as a plan B, this patch
extends the existing mpu_port option usage to allow disabling the port
by specifying the value 0, just like we applied for fm_port option in
commit 2f24d159d5 ("[ALSA] cmipci - Allow to disable integrated FM
port"). As default, the MPU port is still enabled, but user can pass
mpu_port=0 to disable it.
Reported-and-tested-by: Patrick May <dusthillresident@gmail.com>
Link: https://lore.kernel.org/r/20191217081448.1144-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2694 lines
75 KiB
ReStructuredText
2694 lines
75 KiB
ReStructuredText
==============================================================
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Advanced Linux Sound Architecture - Driver Configuration guide
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==============================================================
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Kernel Configuration
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====================
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To enable ALSA support you need at least to build the kernel with
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primary sound card support (``CONFIG_SOUND``). Since ALSA can emulate
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OSS, you don't have to choose any of the OSS modules.
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Enable "OSS API emulation" (``CONFIG_SND_OSSEMUL``) and both OSS mixer
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and PCM supports if you want to run OSS applications with ALSA.
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If you want to support the WaveTable functionality on cards such as
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SB Live! then you need to enable "Sequencer support"
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(``CONFIG_SND_SEQUENCER``).
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To make ALSA debug messages more verbose, enable the "Verbose printk"
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and "Debug" options. To check for memory leaks, turn on "Debug memory"
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too. "Debug detection" will add checks for the detection of cards.
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Please note that all the ALSA ISA drivers support the Linux isapnp API
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(if the card supports ISA PnP). You don't need to configure the cards
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using isapnptools.
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Module parameters
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=================
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The user can load modules with options. If the module supports more than
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one card and you have more than one card of the same type then you can
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specify multiple values for the option separated by commas.
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Module snd
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----------
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The core ALSA module. It is used by all ALSA card drivers.
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It takes the following options which have global effects.
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major
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major number for sound driver;
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Default: 116
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cards_limit
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limiting card index for auto-loading (1-8);
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Default: 1;
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For auto-loading more than one card, specify this option
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together with snd-card-X aliases.
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slots
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Reserve the slot index for the given driver;
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This option takes multiple strings.
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See `Module Autoloading Support`_ section for details.
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debug
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Specifies the debug message level;
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(0 = disable debug prints, 1 = normal debug messages,
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2 = verbose debug messages);
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This option appears only when ``CONFIG_SND_DEBUG=y``.
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This option can be dynamically changed via sysfs
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/sys/modules/snd/parameters/debug file.
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Module snd-pcm-oss
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------------------
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The PCM OSS emulation module.
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This module takes options which change the mapping of devices.
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dsp_map
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PCM device number maps assigned to the 1st OSS device;
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Default: 0
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adsp_map
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PCM device number maps assigned to the 2st OSS device;
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Default: 1
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nonblock_open
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Don't block opening busy PCM devices;
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Default: 1
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For example, when ``dsp_map=2``, /dev/dsp will be mapped to PCM #2 of
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the card #0. Similarly, when ``adsp_map=0``, /dev/adsp will be mapped
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to PCM #0 of the card #0.
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For changing the second or later card, specify the option with
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commas, such like ``dsp_map=0,1``.
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``nonblock_open`` option is used to change the behavior of the PCM
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regarding opening the device. When this option is non-zero,
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opening a busy OSS PCM device won't be blocked but return
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immediately with EAGAIN (just like O_NONBLOCK flag).
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Module snd-rawmidi
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------------------
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This module takes options which change the mapping of devices.
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similar to those of the snd-pcm-oss module.
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midi_map
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MIDI device number maps assigned to the 1st OSS device;
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Default: 0
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amidi_map
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MIDI device number maps assigned to the 2st OSS device;
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Default: 1
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|
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Common parameters for top sound card modules
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--------------------------------------------
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Each of top level sound card module takes the following options.
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index
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index (slot #) of sound card;
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Values: 0 through 31 or negative;
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If nonnegative, assign that index number;
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if negative, interpret as a bitmask of permissible indices;
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the first free permitted index is assigned;
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Default: -1
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id
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card ID (identifier or name);
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Can be up to 15 characters long;
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Default: the card type;
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A directory by this name is created under /proc/asound/
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containing information about the card;
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This ID can be used instead of the index number in
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identifying the card
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enable
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enable card;
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Default: enabled, for PCI and ISA PnP cards
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|
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Module snd-adlib
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----------------
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Module for AdLib FM cards.
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port
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port # for OPL chip
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This module supports multiple cards. It does not support autoprobe, so
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the port must be specified. For actual AdLib FM cards it will be 0x388.
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Note that this card does not have PCM support and no mixer; only FM
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synthesis.
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Make sure you have ``sbiload`` from the alsa-tools package available and,
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after loading the module, find out the assigned ALSA sequencer port
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number through ``sbiload -l``.
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Example output:
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::
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Port Client name Port name
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64:0 OPL2 FM synth OPL2 FM Port
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Load the ``std.sb`` and ``drums.sb`` patches also supplied by ``sbiload``:
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::
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sbiload -p 64:0 std.sb drums.sb
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If you use this driver to drive an OPL3, you can use ``std.o3`` and ``drums.o3``
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instead. To have the card produce sound, use ``aplaymidi`` from alsa-utils:
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::
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aplaymidi -p 64:0 foo.mid
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|
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Module snd-ad1816a
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------------------
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Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
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clockfreq
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Clock frequency for AD1816A chip (default = 0, 33000Hz)
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|
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This module supports multiple cards, autoprobe and PnP.
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|
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Module snd-ad1848
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-----------------
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Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
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port
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port # for AD1848 chip
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irq
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IRQ # for AD1848 chip
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dma1
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DMA # for AD1848 chip (0,1,3)
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This module supports multiple cards. It does not support autoprobe
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thus main port must be specified!!! Other ports are optional.
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The power-management is supported.
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Module snd-ad1889
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-----------------
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Module for Analog Devices AD1889 chips.
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ac97_quirk
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AC'97 workaround for strange hardware;
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See the description of intel8x0 module for details.
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This module supports multiple cards.
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Module snd-ali5451
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------------------
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Module for ALi M5451 PCI chip.
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pcm_channels
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Number of hardware channels assigned for PCM
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spdif
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Support SPDIF I/O;
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Default: disabled
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This module supports one chip and autoprobe.
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The power-management is supported.
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Module snd-als100
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-----------------
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Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
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This module supports multiple cards, autoprobe and PnP.
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The power-management is supported.
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Module snd-als300
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-----------------
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Module for Avance Logic ALS300 and ALS300+
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This module supports multiple cards.
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The power-management is supported.
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Module snd-als4000
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------------------
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Module for sound cards based on Avance Logic ALS4000 PCI chip.
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joystick_port
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port # for legacy joystick support;
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0 = disabled (default), 1 = auto-detect
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|
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This module supports multiple cards, autoprobe and PnP.
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The power-management is supported.
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Module snd-asihpi
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-----------------
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Module for AudioScience ASI soundcards
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enable_hpi_hwdep
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enable HPI hwdep for AudioScience soundcard
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|
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This module supports multiple cards.
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The driver requires the firmware loader support on kernel.
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Module snd-atiixp
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|
-----------------
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Module for ATI IXP 150/200/250/400 AC97 controllers.
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ac97_clock
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AC'97 clock (default = 48000)
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ac97_quirk
|
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AC'97 workaround for strange hardware;
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See `AC97 Quirk Option`_ section below.
|
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ac97_codec
|
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Workaround to specify which AC'97 codec instead of probing.
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If this works for you file a bug with your `lspci -vn` output.
|
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(-2 = Force probing, -1 = Default behavior, 0-2 = Use the
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specified codec.)
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spdif_aclink
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S/PDIF transfer over AC-link (default = 1)
|
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|
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This module supports one card and autoprobe.
|
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|
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ATI IXP has two different methods to control SPDIF output. One is
|
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over AC-link and another is over the "direct" SPDIF output. The
|
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implementation depends on the motherboard, and you'll need to
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choose the correct one via spdif_aclink module option.
|
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|
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The power-management is supported.
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|
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Module snd-atiixp-modem
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|
-----------------------
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Module for ATI IXP 150/200/250 AC97 modem controllers.
|
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|
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This module supports one card and autoprobe.
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|
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Note: The default index value of this module is -2, i.e. the first
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slot is excluded.
|
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The power-management is supported.
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|
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Module snd-au8810, snd-au8820, snd-au8830
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-----------------------------------------
|
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Module for Aureal Vortex, Vortex2 and Advantage device.
|
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pcifix
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Control PCI workarounds;
|
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0 = Disable all workarounds,
|
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1 = Force the PCI latency of the Aureal card to 0xff,
|
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2 = Force the Extend PCI#2 Internal Master for Efficient
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Handling of Dummy Requests on the VIA KT133 AGP Bridge,
|
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3 = Force both settings,
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255 = Autodetect what is required (default)
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|
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This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
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EQ, mpu401, gameport. A3D and wavetable support are still in development.
|
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Development and reverse engineering work is being coordinated at
|
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http://savannah.nongnu.org/projects/openvortex/
|
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SPDIF output has a copy of the AC97 codec output, unless you use the
|
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``spdif`` pcm device, which allows raw data passthru.
|
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The hardware EQ hardware and SPDIF is only present in the Vortex2 and
|
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Advantage.
|
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|
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Note: Some ALSA mixer applications don't handle the SPDIF sample rate
|
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control correctly. If you have problems regarding this, try
|
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another ALSA compliant mixer (alsamixer works).
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|
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Module snd-azt1605
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------------------
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|
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Module for Aztech Sound Galaxy soundcards based on the Aztech AZT1605
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chipset.
|
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|
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port
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port # for BASE (0x220,0x240,0x260,0x280)
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wss_port
|
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port # for WSS (0x530,0x604,0xe80,0xf40)
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irq
|
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IRQ # for WSS (7,9,10,11)
|
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dma1
|
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DMA # for WSS playback (0,1,3)
|
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dma2
|
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DMA # for WSS capture (0,1), -1 = disabled (default)
|
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mpu_port
|
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port # for MPU-401 UART (0x300,0x330), -1 = disabled (default)
|
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mpu_irq
|
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IRQ # for MPU-401 UART (3,5,7,9), -1 = disabled (default)
|
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fm_port
|
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port # for OPL3 (0x388), -1 = disabled (default)
|
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|
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This module supports multiple cards. It does not support autoprobe:
|
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``port``, ``wss_port``, ``irq`` and ``dma1`` have to be specified.
|
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The other values are optional.
|
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|
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``port`` needs to match the BASE ADDRESS jumper on the card (0x220 or 0x240)
|
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or the value stored in the card's EEPROM for cards that have an EEPROM and
|
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their "CONFIG MODE" jumper set to "EEPROM SETTING". The other values can
|
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be chosen freely from the options enumerated above.
|
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|
|
If ``dma2`` is specified and different from ``dma1``, the card will operate in
|
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full-duplex mode. When ``dma1=3``, only ``dma2=0`` is valid and the only way to
|
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enable capture since only channels 0 and 1 are available for capture.
|
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|
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Generic settings are ``port=0x220 wss_port=0x530 irq=10 dma1=1 dma2=0
|
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mpu_port=0x330 mpu_irq=9 fm_port=0x388``.
|
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|
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Whatever IRQ and DMA channels you pick, be sure to reserve them for
|
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legacy ISA in your BIOS.
|
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|
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Module snd-azt2316
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|
------------------
|
|
|
|
Module for Aztech Sound Galaxy soundcards based on the Aztech AZT2316
|
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chipset.
|
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|
|
port
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port # for BASE (0x220,0x240,0x260,0x280)
|
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wss_port
|
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port # for WSS (0x530,0x604,0xe80,0xf40)
|
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irq
|
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IRQ # for WSS (7,9,10,11)
|
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dma1
|
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DMA # for WSS playback (0,1,3)
|
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dma2
|
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DMA # for WSS capture (0,1), -1 = disabled (default)
|
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mpu_port
|
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port # for MPU-401 UART (0x300,0x330), -1 = disabled (default)
|
|
mpu_irq
|
|
IRQ # for MPU-401 UART (5,7,9,10), -1 = disabled (default)
|
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fm_port
|
|
port # for OPL3 (0x388), -1 = disabled (default)
|
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|
|
This module supports multiple cards. It does not support autoprobe:
|
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``port``, ``wss_port``, ``irq`` and ``dma1`` have to be specified.
|
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The other values are optional.
|
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|
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``port`` needs to match the BASE ADDRESS jumper on the card (0x220 or 0x240)
|
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or the value stored in the card's EEPROM for cards that have an EEPROM and
|
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their "CONFIG MODE" jumper set to "EEPROM SETTING". The other values can
|
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be chosen freely from the options enumerated above.
|
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|
|
If ``dma2`` is specified and different from ``dma1``, the card will operate in
|
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full-duplex mode. When ``dma1=3``, only ``dma2=0`` is valid and the only way to
|
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enable capture since only channels 0 and 1 are available for capture.
|
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|
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Generic settings are ``port=0x220 wss_port=0x530 irq=10 dma1=1 dma2=0
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mpu_port=0x330 mpu_irq=9 fm_port=0x388``.
|
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|
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Whatever IRQ and DMA channels you pick, be sure to reserve them for
|
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legacy ISA in your BIOS.
|
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|
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Module snd-aw2
|
|
--------------
|
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|
|
Module for Audiowerk2 sound card
|
|
|
|
This module supports multiple cards.
|
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|
|
Module snd-azt2320
|
|
------------------
|
|
|
|
Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
|
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|
|
This module supports multiple cards, PnP and autoprobe.
|
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|
|
The power-management is supported.
|
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|
|
Module snd-azt3328
|
|
------------------
|
|
|
|
Module for sound cards based on Aztech AZF3328 PCI chip.
|
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|
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joystick
|
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Enable joystick (default off)
|
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|
|
This module supports multiple cards.
|
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|
|
Module snd-bt87x
|
|
----------------
|
|
|
|
Module for video cards based on Bt87x chips.
|
|
|
|
digital_rate
|
|
Override the default digital rate (Hz)
|
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load_all
|
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Load the driver even if the card model isn't known
|
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|
|
This module supports multiple cards.
|
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|
|
Note: The default index value of this module is -2, i.e. the first
|
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slot is excluded.
|
|
|
|
Module snd-ca0106
|
|
-----------------
|
|
|
|
Module for Creative Audigy LS and SB Live 24bit
|
|
|
|
This module supports multiple cards.
|
|
|
|
|
|
Module snd-cmi8330
|
|
------------------
|
|
|
|
Module for sound cards based on C-Media CMI8330 ISA chips.
|
|
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with ``isapnp=0``, the following options are available:
|
|
|
|
wssport
|
|
port # for CMI8330 chip (WSS)
|
|
wssirq
|
|
IRQ # for CMI8330 chip (WSS)
|
|
wssdma
|
|
first DMA # for CMI8330 chip (WSS)
|
|
sbport
|
|
port # for CMI8330 chip (SB16)
|
|
sbirq
|
|
IRQ # for CMI8330 chip (SB16)
|
|
sbdma8
|
|
8bit DMA # for CMI8330 chip (SB16)
|
|
sbdma16
|
|
16bit DMA # for CMI8330 chip (SB16)
|
|
fmport
|
|
(optional) OPL3 I/O port
|
|
mpuport
|
|
(optional) MPU401 I/O port
|
|
mpuirq
|
|
(optional) MPU401 irq #
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-cmipci
|
|
-----------------
|
|
|
|
Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
|
|
|
|
mpu_port
|
|
port address of MIDI interface (8338 only):
|
|
0x300,0x310,0x320,0x330 = legacy port,
|
|
1 = integrated PCI port (default on 8738),
|
|
0 = disable
|
|
fm_port
|
|
port address of OPL-3 FM synthesizer (8x38 only):
|
|
0x388 = legacy port,
|
|
1 = integrated PCI port (default on 8738),
|
|
0 = disable
|
|
soft_ac3
|
|
Software-conversion of raw SPDIF packets (model 033 only) (default = 1)
|
|
joystick_port
|
|
Joystick port address (0 = disable, 1 = auto-detect)
|
|
|
|
This module supports autoprobe and multiple cards.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-cs4231
|
|
-----------------
|
|
|
|
Module for sound cards based on CS4231 ISA chips.
|
|
|
|
port
|
|
port # for CS4231 chip
|
|
mpu_port
|
|
port # for MPU-401 UART (optional), -1 = disable
|
|
irq
|
|
IRQ # for CS4231 chip
|
|
mpu_irq
|
|
IRQ # for MPU-401 UART
|
|
dma1
|
|
first DMA # for CS4231 chip
|
|
dma2
|
|
second DMA # for CS4231 chip
|
|
|
|
This module supports multiple cards. This module does not support autoprobe
|
|
thus main port must be specified!!! Other ports are optional.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-cs4236
|
|
-----------------
|
|
|
|
Module for sound cards based on CS4232/CS4232A,
|
|
CS4235/CS4236/CS4236B/CS4237B/CS4238B/CS4239 ISA chips.
|
|
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with ``isapnp=0``, the following options are available:
|
|
|
|
port
|
|
port # for CS4236 chip (PnP setup - 0x534)
|
|
cport
|
|
control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
|
|
mpu_port
|
|
port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
|
|
fm_port
|
|
FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
|
|
irq
|
|
IRQ # for CS4236 chip (5,7,9,11,12,15)
|
|
mpu_irq
|
|
IRQ # for MPU-401 UART (9,11,12,15)
|
|
dma1
|
|
first DMA # for CS4236 chip (0,1,3)
|
|
dma2
|
|
second DMA # for CS4236 chip (0,1,3), -1 = disable
|
|
|
|
This module supports multiple cards. This module does not support autoprobe
|
|
(if ISA PnP is not used) thus main port and control port must be
|
|
specified!!! Other ports are optional.
|
|
|
|
The power-management is supported.
|
|
|
|
This module is aliased as snd-cs4232 since it provides the old
|
|
snd-cs4232 functionality, too.
|
|
|
|
Module snd-cs4281
|
|
-----------------
|
|
|
|
Module for Cirrus Logic CS4281 soundchip.
|
|
|
|
dual_codec
|
|
Secondary codec ID (0 = disable, default)
|
|
|
|
This module supports multiple cards.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-cs46xx
|
|
-----------------
|
|
|
|
Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
|
|
CS4624/CS4630/CS4280 PCI chips.
|
|
|
|
external_amp
|
|
Force to enable external amplifier.
|
|
thinkpad
|
|
Force to enable Thinkpad's CLKRUN control.
|
|
mmap_valid
|
|
Support OSS mmap mode (default = 0).
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
Usually external amp and CLKRUN controls are detected automatically
|
|
from PCI sub vendor/device ids. If they don't work, give the options
|
|
above explicitly.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-cs5530
|
|
-----------------
|
|
|
|
Module for Cyrix/NatSemi Geode 5530 chip.
|
|
|
|
Module snd-cs5535audio
|
|
----------------------
|
|
|
|
Module for multifunction CS5535 companion PCI device
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-ctxfi
|
|
----------------
|
|
|
|
Module for Creative Sound Blaster X-Fi boards (20k1 / 20k2 chips)
|
|
|
|
* Creative Sound Blaster X-Fi Titanium Fatal1ty Champion Series
|
|
* Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series
|
|
* Creative Sound Blaster X-Fi Titanium Professional Audio
|
|
* Creative Sound Blaster X-Fi Titanium
|
|
* Creative Sound Blaster X-Fi Elite Pro
|
|
* Creative Sound Blaster X-Fi Platinum
|
|
* Creative Sound Blaster X-Fi Fatal1ty
|
|
* Creative Sound Blaster X-Fi XtremeGamer
|
|
* Creative Sound Blaster X-Fi XtremeMusic
|
|
|
|
reference_rate
|
|
reference sample rate, 44100 or 48000 (default)
|
|
multiple
|
|
multiple to ref. sample rate, 1 or 2 (default)
|
|
subsystem
|
|
override the PCI SSID for probing;
|
|
the value consists of SSVID << 16 | SSDID.
|
|
The default is zero, which means no override.
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-darla20
|
|
------------------
|
|
|
|
Module for Echoaudio Darla20
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-darla24
|
|
------------------
|
|
|
|
Module for Echoaudio Darla24
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-dt019x
|
|
-----------------
|
|
|
|
Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
|
|
only)
|
|
|
|
This module supports multiple cards. This module is enabled only with
|
|
ISA PnP support.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-dummy
|
|
----------------
|
|
|
|
Module for the dummy sound card. This "card" doesn't do any output
|
|
or input, but you may use this module for any application which
|
|
requires a sound card (like RealPlayer).
|
|
|
|
pcm_devs
|
|
Number of PCM devices assigned to each card (default = 1, up to 4)
|
|
pcm_substreams
|
|
Number of PCM substreams assigned to each PCM (default = 8, up to 128)
|
|
hrtimer
|
|
Use hrtimer (=1, default) or system timer (=0)
|
|
fake_buffer
|
|
Fake buffer allocations (default = 1)
|
|
|
|
When multiple PCM devices are created, snd-dummy gives different
|
|
behavior to each PCM device:
|
|
* 0 = interleaved with mmap support
|
|
* 1 = non-interleaved with mmap support
|
|
* 2 = interleaved without mmap
|
|
* 3 = non-interleaved without mmap
|
|
|
|
As default, snd-dummy drivers doesn't allocate the real buffers
|
|
but either ignores read/write or mmap a single dummy page to all
|
|
buffer pages, in order to save the resources. If your apps need
|
|
the read/ written buffer data to be consistent, pass fake_buffer=0
|
|
option.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-echo3g
|
|
-----------------
|
|
|
|
Module for Echoaudio 3G cards (Gina3G/Layla3G)
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-emu10k1
|
|
------------------
|
|
|
|
Module for EMU10K1/EMU10k2 based PCI sound cards.
|
|
|
|
* Sound Blaster Live!
|
|
* Sound Blaster PCI 512
|
|
* Emu APS (partially supported)
|
|
* Sound Blaster Audigy
|
|
|
|
extin
|
|
bitmap of available external inputs for FX8010 (see bellow)
|
|
extout
|
|
bitmap of available external outputs for FX8010 (see bellow)
|
|
seq_ports
|
|
allocated sequencer ports (4 by default)
|
|
max_synth_voices
|
|
limit of voices used for wavetable (64 by default)
|
|
max_buffer_size
|
|
specifies the maximum size of wavetable/pcm buffers given in MB
|
|
unit. Default value is 128.
|
|
enable_ir
|
|
enable IR
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
Input & Output configurations [extin/extout]
|
|
* Creative Card wo/Digital out [0x0003/0x1f03]
|
|
* Creative Card w/Digital out [0x0003/0x1f0f]
|
|
* Creative Card w/Digital CD in [0x000f/0x1f0f]
|
|
* Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
|
|
* Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
|
|
* Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
|
|
* Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
|
|
* Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
|
|
* Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
|
|
* Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
|
|
* Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
|
|
* Creative Card all ins and outs [0x3fff/0x7fff]
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-emu10k1x
|
|
-------------------
|
|
|
|
Module for Creative Emu10k1X (SB Live Dell OEM version)
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-ens1370
|
|
------------------
|
|
|
|
Module for Ensoniq AudioPCI ES1370 PCI sound cards.
|
|
|
|
* SoundBlaster PCI 64
|
|
* SoundBlaster PCI 128
|
|
|
|
joystick
|
|
Enable joystick (default off)
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-ens1371
|
|
------------------
|
|
|
|
Module for Ensoniq AudioPCI ES1371 PCI sound cards.
|
|
|
|
* SoundBlaster PCI 64
|
|
* SoundBlaster PCI 128
|
|
* SoundBlaster Vibra PCI
|
|
|
|
joystick_port
|
|
port # for joystick (0x200,0x208,0x210,0x218), 0 = disable
|
|
(default), 1 = auto-detect
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-es1688
|
|
-----------------
|
|
|
|
Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
|
|
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
mpu_port
|
|
port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
|
|
mpu_irq
|
|
IRQ # for MPU-401 port (5,7,9,10)
|
|
fm_port
|
|
port # for OPL3 (option; share the same port as default)
|
|
|
|
with ``isapnp=0``, the following additional options are available:
|
|
|
|
port
|
|
port # for ES-1688 chip (0x220,0x240,0x260)
|
|
irq
|
|
IRQ # for ES-1688 chip (5,7,9,10)
|
|
dma8
|
|
DMA # for ES-1688 chip (0,1,3)
|
|
|
|
This module supports multiple cards and autoprobe (without MPU-401 port)
|
|
and PnP with the ES968 chip.
|
|
|
|
Module snd-es18xx
|
|
-----------------
|
|
|
|
Module for ESS AudioDrive ES-18xx sound cards.
|
|
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with ``isapnp=0``, the following options are available:
|
|
|
|
port
|
|
port # for ES-18xx chip (0x220,0x240,0x260)
|
|
mpu_port
|
|
port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
|
|
fm_port
|
|
port # for FM (optional, not used)
|
|
irq
|
|
IRQ # for ES-18xx chip (5,7,9,10)
|
|
dma1
|
|
first DMA # for ES-18xx chip (0,1,3)
|
|
dma2
|
|
first DMA # for ES-18xx chip (0,1,3)
|
|
|
|
This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
|
|
port if native ISA PnP routines are not used).
|
|
When ``dma2`` is equal with ``dma1``, the driver works as half-duplex.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-es1938
|
|
-----------------
|
|
|
|
Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-es1968
|
|
-----------------
|
|
|
|
Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
|
|
|
|
total_bufsize
|
|
total buffer size in kB (1-4096kB)
|
|
pcm_substreams_p
|
|
playback channels (1-8, default=2)
|
|
pcm_substreams_c
|
|
capture channels (1-8, default=0)
|
|
clock
|
|
clock (0 = auto-detection)
|
|
use_pm
|
|
support the power-management (0 = off, 1 = on, 2 = auto (default))
|
|
enable_mpu
|
|
enable MPU401 (0 = off, 1 = on, 2 = auto (default))
|
|
joystick
|
|
enable joystick (default off)
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-fm801
|
|
----------------
|
|
|
|
Module for ForteMedia FM801 based PCI sound cards.
|
|
|
|
tea575x_tuner
|
|
Enable TEA575x tuner;
|
|
1 = MediaForte 256-PCS,
|
|
2 = MediaForte 256-PCPR,
|
|
3 = MediaForte 64-PCR
|
|
High 16-bits are video (radio) device number + 1;
|
|
example: 0x10002 (MediaForte 256-PCPR, device 1)
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-gina20
|
|
-----------------
|
|
|
|
Module for Echoaudio Gina20
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-gina24
|
|
-----------------
|
|
|
|
Module for Echoaudio Gina24
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-gusclassic
|
|
---------------------
|
|
|
|
Module for Gravis UltraSound Classic sound card.
|
|
|
|
port
|
|
port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
|
|
irq
|
|
IRQ # for GF1 chip (3,5,9,11,12,15)
|
|
dma1
|
|
DMA # for GF1 chip (1,3,5,6,7)
|
|
dma2
|
|
DMA # for GF1 chip (1,3,5,6,7,-1=disable)
|
|
joystick_dac
|
|
0 to 31, (0.59V-4.52V or 0.389V-2.98V)
|
|
voices
|
|
GF1 voices limit (14-32)
|
|
pcm_voices
|
|
reserved PCM voices
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
Module snd-gusextreme
|
|
---------------------
|
|
|
|
Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
|
|
|
|
port
|
|
port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
|
|
gf1_port
|
|
port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
|
|
mpu_port
|
|
port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
|
|
irq
|
|
IRQ # for ES-1688 chip (5,7,9,10)
|
|
gf1_irq
|
|
IRQ # for GF1 chip (3,5,9,11,12,15)
|
|
mpu_irq
|
|
IRQ # for MPU-401 port (5,7,9,10)
|
|
dma8
|
|
DMA # for ES-1688 chip (0,1,3)
|
|
dma1
|
|
DMA # for GF1 chip (1,3,5,6,7)
|
|
joystick_dac
|
|
0 to 31, (0.59V-4.52V or 0.389V-2.98V)
|
|
voices
|
|
GF1 voices limit (14-32)
|
|
pcm_voices
|
|
reserved PCM voices
|
|
|
|
This module supports multiple cards and autoprobe (without MPU-401 port).
|
|
|
|
Module snd-gusmax
|
|
-----------------
|
|
|
|
Module for Gravis UltraSound MAX sound card.
|
|
|
|
port
|
|
port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
|
|
irq
|
|
IRQ # for GF1 chip (3,5,9,11,12,15)
|
|
dma1
|
|
DMA # for GF1 chip (1,3,5,6,7)
|
|
dma2
|
|
DMA # for GF1 chip (1,3,5,6,7,-1=disable)
|
|
joystick_dac
|
|
0 to 31, (0.59V-4.52V or 0.389V-2.98V)
|
|
voices
|
|
GF1 voices limit (14-32)
|
|
pcm_voices
|
|
reserved PCM voices
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
Module snd-hda-intel
|
|
--------------------
|
|
|
|
Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8, ICH9, ICH10,
|
|
PCH, SCH), ATI SB450, SB600, R600, RS600, RS690, RS780, RV610, RV620,
|
|
RV630, RV635, RV670, RV770, VIA VT8251/VT8237A, SIS966, ULI M5461
|
|
|
|
[Multiple options for each card instance]
|
|
|
|
model
|
|
force the model name
|
|
position_fix
|
|
Fix DMA pointer;
|
|
-1 = system default: choose appropriate one per controller hardware,
|
|
0 = auto: falls back to LPIB when POSBUF doesn't work,
|
|
1 = use LPIB,
|
|
2 = POSBUF: use position buffer,
|
|
3 = VIACOMBO: VIA-specific workaround for capture,
|
|
4 = COMBO: use LPIB for playback, auto for capture stream
|
|
5 = SKL+: apply the delay calculation available on recent Intel chips
|
|
6 = FIFO: correct the position with the fixed FIFO size, for recent AMD chips
|
|
probe_mask
|
|
Bitmask to probe codecs (default = -1, meaning all slots);
|
|
When the bit 8 (0x100) is set, the lower 8 bits are used
|
|
as the "fixed" codec slots; i.e. the driver probes the
|
|
slots regardless what hardware reports back
|
|
probe_only
|
|
Only probing and no codec initialization (default=off);
|
|
Useful to check the initial codec status for debugging
|
|
bdl_pos_adj
|
|
Specifies the DMA IRQ timing delay in samples.
|
|
Passing -1 will make the driver to choose the appropriate
|
|
value based on the controller chip.
|
|
patch
|
|
Specifies the early "patch" files to modify the HD-audio setup
|
|
before initializing the codecs.
|
|
This option is available only when ``CONFIG_SND_HDA_PATCH_LOADER=y``
|
|
is set. See hd-audio/notes.rst for details.
|
|
beep_mode
|
|
Selects the beep registration mode (0=off, 1=on);
|
|
default value is set via ``CONFIG_SND_HDA_INPUT_BEEP_MODE`` kconfig.
|
|
|
|
[Single (global) options]
|
|
|
|
single_cmd
|
|
Use single immediate commands to communicate with codecs
|
|
(for debugging only)
|
|
enable_msi
|
|
Enable Message Signaled Interrupt (MSI) (default = off)
|
|
power_save
|
|
Automatic power-saving timeout (in second, 0 = disable)
|
|
power_save_controller
|
|
Reset HD-audio controller in power-saving mode (default = on)
|
|
align_buffer_size
|
|
Force rounding of buffer/period sizes to multiples of 128 bytes.
|
|
This is more efficient in terms of memory access but isn't
|
|
required by the HDA spec and prevents users from specifying
|
|
exact period/buffer sizes. (default = on)
|
|
snoop
|
|
Enable/disable snooping (default = on)
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
See hd-audio/notes.rst for more details about HD-audio driver.
|
|
|
|
Each codec may have a model table for different configurations.
|
|
If your machine isn't listed there, the default (usually minimal)
|
|
configuration is set up. You can pass ``model=<name>`` option to
|
|
specify a certain model in such a case. There are different
|
|
models depending on the codec chip. The list of available models
|
|
is found in hd-audio/models.rst.
|
|
|
|
The model name ``generic`` is treated as a special case. When this
|
|
model is given, the driver uses the generic codec parser without
|
|
"codec-patch". It's sometimes good for testing and debugging.
|
|
|
|
If the default configuration doesn't work and one of the above
|
|
matches with your device, report it together with alsa-info.sh
|
|
output (with ``--no-upload`` option) to kernel bugzilla or alsa-devel
|
|
ML (see the section `Links and Addresses`_).
|
|
|
|
``power_save`` and ``power_save_controller`` options are for power-saving
|
|
mode. See powersave.rst for details.
|
|
|
|
Note 2: If you get click noises on output, try the module option
|
|
``position_fix=1`` or ``2``. ``position_fix=1`` will use the SD_LPIB
|
|
register value without FIFO size correction as the current
|
|
DMA pointer. ``position_fix=2`` will make the driver to use
|
|
the position buffer instead of reading SD_LPIB register.
|
|
(Usually SD_LPIB register is more accurate than the
|
|
position buffer.)
|
|
|
|
``position_fix=3`` is specific to VIA devices. The position
|
|
of the capture stream is checked from both LPIB and POSBUF
|
|
values. ``position_fix=4`` is a combination mode, using LPIB
|
|
for playback and POSBUF for capture.
|
|
|
|
NB: If you get many ``azx_get_response timeout`` messages at
|
|
loading, it's likely a problem of interrupts (e.g. ACPI irq
|
|
routing). Try to boot with options like ``pci=noacpi``. Also, you
|
|
can try ``single_cmd=1`` module option. This will switch the
|
|
communication method between HDA controller and codecs to the
|
|
single immediate commands instead of CORB/RIRB. Basically, the
|
|
single command mode is provided only for BIOS, and you won't get
|
|
unsolicited events, too. But, at least, this works independently
|
|
from the irq. Remember this is a last resort, and should be
|
|
avoided as much as possible...
|
|
|
|
MORE NOTES ON ``azx_get_response timeout`` PROBLEMS:
|
|
On some hardware, you may need to add a proper probe_mask option
|
|
to avoid the ``azx_get_response timeout`` problem above, instead.
|
|
This occurs when the access to non-existing or non-working codec slot
|
|
(likely a modem one) causes a stall of the communication via HD-audio
|
|
bus. You can see which codec slots are probed by enabling
|
|
``CONFIG_SND_DEBUG_VERBOSE``, or simply from the file name of the codec
|
|
proc files. Then limit the slots to probe by probe_mask option.
|
|
For example, ``probe_mask=1`` means to probe only the first slot, and
|
|
``probe_mask=4`` means only the third slot.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-hdsp
|
|
---------------
|
|
|
|
Module for RME Hammerfall DSP audio interface(s)
|
|
|
|
This module supports multiple cards.
|
|
|
|
Note: The firmware data can be automatically loaded via hotplug
|
|
when ``CONFIG_FW_LOADER`` is set. Otherwise, you need to load
|
|
the firmware via hdsploader utility included in alsa-tools
|
|
package.
|
|
The firmware data is found in alsa-firmware package.
|
|
|
|
Note: snd-page-alloc module does the job which snd-hammerfall-mem
|
|
module did formerly. It will allocate the buffers in advance
|
|
when any HDSP cards are found. To make the buffer
|
|
allocation sure, load snd-page-alloc module in the early
|
|
stage of boot sequence. See `Early Buffer Allocation`_
|
|
section.
|
|
|
|
Module snd-hdspm
|
|
----------------
|
|
|
|
Module for RME HDSP MADI board.
|
|
|
|
precise_ptr
|
|
Enable precise pointer, or disable.
|
|
line_outs_monitor
|
|
Send playback streams to analog outs by default.
|
|
enable_monitor
|
|
Enable Analog Out on Channel 63/64 by default.
|
|
|
|
See hdspm.rst for details.
|
|
|
|
Module snd-ice1712
|
|
------------------
|
|
|
|
Module for Envy24 (ICE1712) based PCI sound cards.
|
|
|
|
* MidiMan M Audio Delta 1010
|
|
* MidiMan M Audio Delta 1010LT
|
|
* MidiMan M Audio Delta DiO 2496
|
|
* MidiMan M Audio Delta 66
|
|
* MidiMan M Audio Delta 44
|
|
* MidiMan M Audio Delta 410
|
|
* MidiMan M Audio Audiophile 2496
|
|
* TerraTec EWS 88MT
|
|
* TerraTec EWS 88D
|
|
* TerraTec EWX 24/96
|
|
* TerraTec DMX 6Fire
|
|
* TerraTec Phase 88
|
|
* Hoontech SoundTrack DSP 24
|
|
* Hoontech SoundTrack DSP 24 Value
|
|
* Hoontech SoundTrack DSP 24 Media 7.1
|
|
* Event Electronics, EZ8
|
|
* Digigram VX442
|
|
* Lionstracs, Mediastaton
|
|
* Terrasoniq TS 88
|
|
|
|
model
|
|
Use the given board model, one of the following:
|
|
delta1010, dio2496, delta66, delta44, audiophile, delta410,
|
|
delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
|
|
dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
|
|
phase88, mediastation
|
|
omni
|
|
Omni I/O support for MidiMan M-Audio Delta44/66
|
|
cs8427_timeout
|
|
reset timeout for the CS8427 chip (S/PDIF transceiver) in msec
|
|
resolution, default value is 500 (0.5 sec)
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
Note: The consumer part is not used with all Envy24 based cards (for
|
|
example in the MidiMan Delta siree).
|
|
|
|
Note: The supported board is detected by reading EEPROM or PCI
|
|
SSID (if EEPROM isn't available). You can override the
|
|
model by passing ``model`` module option in case that the
|
|
driver isn't configured properly or you want to try another
|
|
type for testing.
|
|
|
|
Module snd-ice1724
|
|
------------------
|
|
|
|
Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
|
|
|
|
* MidiMan M Audio Revolution 5.1
|
|
* MidiMan M Audio Revolution 7.1
|
|
* MidiMan M Audio Audiophile 192
|
|
* AMP Ltd AUDIO2000
|
|
* TerraTec Aureon 5.1 Sky
|
|
* TerraTec Aureon 7.1 Space
|
|
* TerraTec Aureon 7.1 Universe
|
|
* TerraTec Phase 22
|
|
* TerraTec Phase 28
|
|
* AudioTrak Prodigy 7.1
|
|
* AudioTrak Prodigy 7.1 LT
|
|
* AudioTrak Prodigy 7.1 XT
|
|
* AudioTrak Prodigy 7.1 HIFI
|
|
* AudioTrak Prodigy 7.1 HD2
|
|
* AudioTrak Prodigy 192
|
|
* Pontis MS300
|
|
* Albatron K8X800 Pro II
|
|
* Chaintech ZNF3-150
|
|
* Chaintech ZNF3-250
|
|
* Chaintech 9CJS
|
|
* Chaintech AV-710
|
|
* Shuttle SN25P
|
|
* Onkyo SE-90PCI
|
|
* Onkyo SE-200PCI
|
|
* ESI Juli@
|
|
* ESI Maya44
|
|
* Hercules Fortissimo IV
|
|
* EGO-SYS WaveTerminal 192M
|
|
|
|
model
|
|
Use the given board model, one of the following:
|
|
revo51, revo71, amp2000, prodigy71, prodigy71lt,
|
|
prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,
|
|
juli, aureon51, aureon71, universe, ap192, k8x800,
|
|
phase22, phase28, ms300, av710, se200pci, se90pci,
|
|
fortissimo4, sn25p, WT192M, maya44
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
Note: The supported board is detected by reading EEPROM or PCI
|
|
SSID (if EEPROM isn't available). You can override the
|
|
model by passing ``model`` module option in case that the
|
|
driver isn't configured properly or you want to try another
|
|
type for testing.
|
|
|
|
Module snd-indigo
|
|
-----------------
|
|
|
|
Module for Echoaudio Indigo
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-indigodj
|
|
-------------------
|
|
|
|
Module for Echoaudio Indigo DJ
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-indigoio
|
|
-------------------
|
|
|
|
Module for Echoaudio Indigo IO
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-intel8x0
|
|
-------------------
|
|
|
|
Module for AC'97 motherboards from Intel and compatibles.
|
|
|
|
* Intel i810/810E, i815, i820, i830, i84x, MX440 ICH5, ICH6, ICH7,
|
|
6300ESB, ESB2
|
|
* SiS 7012 (SiS 735)
|
|
* NVidia NForce, NForce2, NForce3, MCP04, CK804 CK8, CK8S, MCP501
|
|
* AMD AMD768, AMD8111
|
|
* ALi m5455
|
|
|
|
ac97_clock
|
|
AC'97 codec clock base (0 = auto-detect)
|
|
ac97_quirk
|
|
AC'97 workaround for strange hardware;
|
|
See `AC97 Quirk Option`_ section below.
|
|
buggy_irq
|
|
Enable workaround for buggy interrupts on some motherboards
|
|
(default yes on nForce chips, otherwise off)
|
|
buggy_semaphore
|
|
Enable workaround for hardware with buggy semaphores (e.g. on some
|
|
ASUS laptops) (default off)
|
|
spdif_aclink
|
|
Use S/PDIF over AC-link instead of direct connection from the
|
|
controller chip (0 = off, 1 = on, -1 = default)
|
|
|
|
This module supports one chip and autoprobe.
|
|
|
|
Note: the latest driver supports auto-detection of chip clock.
|
|
if you still encounter too fast playback, specify the clock
|
|
explicitly via the module option ``ac97_clock=41194``.
|
|
|
|
Joystick/MIDI ports are not supported by this driver. If your
|
|
motherboard has these devices, use the ns558 or snd-mpu401
|
|
modules, respectively.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-intel8x0m
|
|
--------------------
|
|
|
|
Module for Intel ICH (i8x0) chipset MC97 modems.
|
|
|
|
* Intel i810/810E, i815, i820, i830, i84x, MX440 ICH5, ICH6, ICH7
|
|
* SiS 7013 (SiS 735)
|
|
* NVidia NForce, NForce2, NForce2s, NForce3
|
|
* AMD AMD8111
|
|
* ALi m5455
|
|
|
|
ac97_clock
|
|
AC'97 codec clock base (0 = auto-detect)
|
|
|
|
This module supports one card and autoprobe.
|
|
|
|
Note: The default index value of this module is -2, i.e. the first
|
|
slot is excluded.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-interwave
|
|
--------------------
|
|
|
|
Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
|
|
and other sound cards based on AMD InterWave (tm) chip.
|
|
|
|
joystick_dac
|
|
0 to 31, (0.59V-4.52V or 0.389V-2.98V)
|
|
midi
|
|
1 = MIDI UART enable, 0 = MIDI UART disable (default)
|
|
pcm_voices
|
|
reserved PCM voices for the synthesizer (default 2)
|
|
effect
|
|
1 = InterWave effects enable (default 0); requires 8 voices
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with ``isapnp=0``, the following options are available:
|
|
|
|
port
|
|
port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
|
|
irq
|
|
IRQ # for InterWave chip (3,5,9,11,12,15)
|
|
dma1
|
|
DMA # for InterWave chip (0,1,3,5,6,7)
|
|
dma2
|
|
DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
|
|
|
|
This module supports multiple cards, autoprobe and ISA PnP.
|
|
|
|
Module snd-interwave-stb
|
|
------------------------
|
|
|
|
Module for UltraSound 32-Pro (sound card from STB used by Compaq)
|
|
and other sound cards based on AMD InterWave (tm) chip with TEA6330T
|
|
circuit for extended control of bass, treble and master volume.
|
|
|
|
joystick_dac
|
|
0 to 31, (0.59V-4.52V or 0.389V-2.98V)
|
|
midi
|
|
1 = MIDI UART enable, 0 = MIDI UART disable (default)
|
|
pcm_voices
|
|
reserved PCM voices for the synthesizer (default 2)
|
|
effect
|
|
1 = InterWave effects enable (default 0); requires 8 voices
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with ``isapnp=0``, the following options are available:
|
|
|
|
port
|
|
port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
|
|
port_tc
|
|
tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
|
|
irq
|
|
IRQ # for InterWave chip (3,5,9,11,12,15)
|
|
dma1
|
|
DMA # for InterWave chip (0,1,3,5,6,7)
|
|
dma2
|
|
DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
|
|
|
|
This module supports multiple cards, autoprobe and ISA PnP.
|
|
|
|
Module snd-jazz16
|
|
-------------------
|
|
|
|
Module for Media Vision Jazz16 chipset. The chipset consists of 3 chips:
|
|
MVD1216 + MVA416 + MVA514.
|
|
|
|
port
|
|
port # for SB DSP chip (0x210,0x220,0x230,0x240,0x250,0x260)
|
|
irq
|
|
IRQ # for SB DSP chip (3,5,7,9,10,15)
|
|
dma8
|
|
DMA # for SB DSP chip (1,3)
|
|
dma16
|
|
DMA # for SB DSP chip (5,7)
|
|
mpu_port
|
|
MPU-401 port # (0x300,0x310,0x320,0x330)
|
|
mpu_irq
|
|
MPU-401 irq # (2,3,5,7)
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-korg1212
|
|
-------------------
|
|
|
|
Module for Korg 1212 IO PCI card
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-layla20
|
|
------------------
|
|
|
|
Module for Echoaudio Layla20
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-layla24
|
|
------------------
|
|
|
|
Module for Echoaudio Layla24
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-lola
|
|
---------------
|
|
|
|
Module for Digigram Lola PCI-e boards
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-lx6464es
|
|
-------------------
|
|
|
|
Module for Digigram LX6464ES boards
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-maestro3
|
|
-------------------
|
|
|
|
Module for Allegro/Maestro3 chips
|
|
|
|
external_amp
|
|
enable external amp (enabled by default)
|
|
amp_gpio
|
|
GPIO pin number for external amp (0-15) or -1 for default pin (8
|
|
for allegro, 1 for others)
|
|
|
|
This module supports autoprobe and multiple chips.
|
|
|
|
Note: the binding of amplifier is dependent on hardware.
|
|
If there is no sound even though all channels are unmuted, try to
|
|
specify other gpio connection via amp_gpio option.
|
|
For example, a Panasonic notebook might need ``amp_gpio=0x0d``
|
|
option.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-mia
|
|
---------------
|
|
|
|
Module for Echoaudio Mia
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-miro
|
|
---------------
|
|
|
|
Module for Miro soundcards: miroSOUND PCM 1 pro, miroSOUND PCM 12,
|
|
miroSOUND PCM 20 Radio.
|
|
|
|
port
|
|
Port # (0x530,0x604,0xe80,0xf40)
|
|
irq
|
|
IRQ # (5,7,9,10,11)
|
|
dma1
|
|
1st dma # (0,1,3)
|
|
dma2
|
|
2nd dma # (0,1)
|
|
mpu_port
|
|
MPU-401 port # (0x300,0x310,0x320,0x330)
|
|
mpu_irq
|
|
MPU-401 irq # (5,7,9,10)
|
|
fm_port
|
|
FM Port # (0x388)
|
|
wss
|
|
enable WSS mode
|
|
ide
|
|
enable onboard ide support
|
|
|
|
Module snd-mixart
|
|
-----------------
|
|
|
|
Module for Digigram miXart8 sound cards.
|
|
|
|
This module supports multiple cards.
|
|
Note: One miXart8 board will be represented as 4 alsa cards.
|
|
See MIXART.txt for details.
|
|
|
|
When the driver is compiled as a module and the hotplug firmware
|
|
is supported, the firmware data is loaded via hotplug automatically.
|
|
Install the necessary firmware files in alsa-firmware package.
|
|
When no hotplug fw loader is available, you need to load the
|
|
firmware via mixartloader utility in alsa-tools package.
|
|
|
|
Module snd-mona
|
|
---------------
|
|
|
|
Module for Echoaudio Mona
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-mpu401
|
|
-----------------
|
|
|
|
Module for MPU-401 UART devices.
|
|
|
|
port
|
|
port number or -1 (disable)
|
|
irq
|
|
IRQ number or -1 (disable)
|
|
pnp
|
|
PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
This module supports multiple devices and PnP.
|
|
|
|
Module snd-msnd-classic
|
|
-----------------------
|
|
|
|
Module for Turtle Beach MultiSound Classic, Tahiti or Monterey
|
|
soundcards.
|
|
|
|
io
|
|
Port # for msnd-classic card
|
|
irq
|
|
IRQ # for msnd-classic card
|
|
mem
|
|
Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000, 0xe0000 or 0xe8000)
|
|
write_ndelay
|
|
enable write ndelay (default = 1)
|
|
calibrate_signal
|
|
calibrate signal (default = 0)
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
digital
|
|
Digital daughterboard present (default = 0)
|
|
cfg
|
|
Config port (0x250, 0x260 or 0x270) default = PnP
|
|
reset
|
|
Reset all devices
|
|
mpu_io
|
|
MPU401 I/O port
|
|
mpu_irq
|
|
MPU401 irq#
|
|
ide_io0
|
|
IDE port #0
|
|
ide_io1
|
|
IDE port #1
|
|
ide_irq
|
|
IDE irq#
|
|
joystick_io
|
|
Joystick I/O port
|
|
|
|
The driver requires firmware files ``turtlebeach/msndinit.bin`` and
|
|
``turtlebeach/msndperm.bin`` in the proper firmware directory.
|
|
|
|
See Documentation/sound/cards/multisound.sh for important information
|
|
about this driver. Note that it has been discontinued, but the
|
|
Voyetra Turtle Beach knowledge base entry for it is still available
|
|
at
|
|
http://www.turtlebeach.com
|
|
|
|
Module snd-msnd-pinnacle
|
|
------------------------
|
|
|
|
Module for Turtle Beach MultiSound Pinnacle/Fiji soundcards.
|
|
|
|
io
|
|
Port # for pinnacle/fiji card
|
|
irq
|
|
IRQ # for pinnalce/fiji card
|
|
mem
|
|
Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000, 0xe0000 or 0xe8000)
|
|
write_ndelay
|
|
enable write ndelay (default = 1)
|
|
calibrate_signal
|
|
calibrate signal (default = 0)
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
The driver requires firmware files ``turtlebeach/pndspini.bin`` and
|
|
``turtlebeach/pndsperm.bin`` in the proper firmware directory.
|
|
|
|
Module snd-mtpav
|
|
----------------
|
|
|
|
Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
|
|
port).
|
|
|
|
port
|
|
I/O port # for MTPAV (0x378,0x278, default=0x378)
|
|
irq
|
|
IRQ # for MTPAV (7,5, default=7)
|
|
hwports
|
|
number of supported hardware ports, default=8.
|
|
|
|
Module supports only 1 card. This module has no enable option.
|
|
|
|
Module snd-mts64
|
|
----------------
|
|
|
|
Module for Ego Systems (ESI) Miditerminal 4140
|
|
|
|
This module supports multiple devices.
|
|
Requires parport (``CONFIG_PARPORT``).
|
|
|
|
Module snd-nm256
|
|
----------------
|
|
|
|
Module for NeoMagic NM256AV/ZX chips
|
|
|
|
playback_bufsize
|
|
max playback frame size in kB (4-128kB)
|
|
capture_bufsize
|
|
max capture frame size in kB (4-128kB)
|
|
force_ac97
|
|
0 or 1 (disabled by default)
|
|
buffer_top
|
|
specify buffer top address
|
|
use_cache
|
|
0 or 1 (disabled by default)
|
|
vaio_hack
|
|
alias buffer_top=0x25a800
|
|
reset_workaround
|
|
enable AC97 RESET workaround for some laptops
|
|
reset_workaround2
|
|
enable extended AC97 RESET workaround for some other laptops
|
|
|
|
This module supports one chip and autoprobe.
|
|
|
|
The power-management is supported.
|
|
|
|
Note: on some notebooks the buffer address cannot be detected
|
|
automatically, or causes hang-up during initialization.
|
|
In such a case, specify the buffer top address explicitly via
|
|
the buffer_top option.
|
|
For example,
|
|
Sony F250: buffer_top=0x25a800
|
|
Sony F270: buffer_top=0x272800
|
|
The driver supports only ac97 codec. It's possible to force
|
|
to initialize/use ac97 although it's not detected. In such a
|
|
case, use ``force_ac97=1`` option - but *NO* guarantee whether it
|
|
works!
|
|
|
|
Note: The NM256 chip can be linked internally with non-AC97
|
|
codecs. This driver supports only the AC97 codec, and won't work
|
|
with machines with other (most likely CS423x or OPL3SAx) chips,
|
|
even though the device is detected in lspci. In such a case, try
|
|
other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
|
|
but some doesn't have ISA PnP. You'll need to specify ``isapnp=0``
|
|
and proper hardware parameters in the case without ISA PnP.
|
|
|
|
Note: some laptops need a workaround for AC97 RESET. For the
|
|
known hardware like Dell Latitude LS and Sony PCG-F305, this
|
|
workaround is enabled automatically. For other laptops with a
|
|
hard freeze, you can try ``reset_workaround=1`` option.
|
|
|
|
Note: Dell Latitude CSx laptops have another problem regarding
|
|
AC97 RESET. On these laptops, reset_workaround2 option is
|
|
turned on as default. This option is worth to try if the
|
|
previous reset_workaround option doesn't help.
|
|
|
|
Note: This driver is really crappy. It's a porting from the
|
|
OSS driver, which is a result of black-magic reverse engineering.
|
|
The detection of codec will fail if the driver is loaded *after*
|
|
X-server as described above. You might be able to force to load
|
|
the module, but it may result in hang-up. Hence, make sure that
|
|
you load this module *before* X if you encounter this kind of
|
|
problem.
|
|
|
|
Module snd-opl3sa2
|
|
------------------
|
|
|
|
Module for Yamaha OPL3-SA2/SA3 sound cards.
|
|
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with ``isapnp=0``, the following options are available:
|
|
|
|
port
|
|
control port # for OPL3-SA chip (0x370)
|
|
sb_port
|
|
SB port # for OPL3-SA chip (0x220,0x240)
|
|
wss_port
|
|
WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
|
|
midi_port
|
|
port # for MPU-401 UART (0x300,0x330), -1 = disable
|
|
fm_port
|
|
FM port # for OPL3-SA chip (0x388), -1 = disable
|
|
irq
|
|
IRQ # for OPL3-SA chip (5,7,9,10)
|
|
dma1
|
|
first DMA # for Yamaha OPL3-SA chip (0,1,3)
|
|
dma2
|
|
second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
|
|
|
|
This module supports multiple cards and ISA PnP. It does not support
|
|
autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-opti92x-ad1848
|
|
-------------------------
|
|
|
|
Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
|
|
Module works with OAK Mozart cards as well.
|
|
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with ``isapnp=0``, the following options are available:
|
|
|
|
port
|
|
port # for WSS chip (0x530,0xe80,0xf40,0x604)
|
|
mpu_port
|
|
port # for MPU-401 UART (0x300,0x310,0x320,0x330)
|
|
fm_port
|
|
port # for OPL3 device (0x388)
|
|
irq
|
|
IRQ # for WSS chip (5,7,9,10,11)
|
|
mpu_irq
|
|
IRQ # for MPU-401 UART (5,7,9,10)
|
|
dma1
|
|
first DMA # for WSS chip (0,1,3)
|
|
|
|
This module supports only one card, autoprobe and PnP.
|
|
|
|
Module snd-opti92x-cs4231
|
|
-------------------------
|
|
|
|
Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
|
|
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with ``isapnp=0``, the following options are available:
|
|
|
|
port
|
|
port # for WSS chip (0x530,0xe80,0xf40,0x604)
|
|
mpu_port
|
|
port # for MPU-401 UART (0x300,0x310,0x320,0x330)
|
|
fm_port
|
|
port # for OPL3 device (0x388)
|
|
irq
|
|
IRQ # for WSS chip (5,7,9,10,11)
|
|
mpu_irq
|
|
IRQ # for MPU-401 UART (5,7,9,10)
|
|
dma1
|
|
first DMA # for WSS chip (0,1,3)
|
|
dma2
|
|
second DMA # for WSS chip (0,1,3)
|
|
|
|
This module supports only one card, autoprobe and PnP.
|
|
|
|
Module snd-opti93x
|
|
------------------
|
|
|
|
Module for sound cards based on OPTi 82c93x chips.
|
|
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with ``isapnp=0``, the following options are available:
|
|
|
|
port
|
|
port # for WSS chip (0x530,0xe80,0xf40,0x604)
|
|
mpu_port
|
|
port # for MPU-401 UART (0x300,0x310,0x320,0x330)
|
|
fm_port
|
|
port # for OPL3 device (0x388)
|
|
irq
|
|
IRQ # for WSS chip (5,7,9,10,11)
|
|
mpu_irq
|
|
IRQ # for MPU-401 UART (5,7,9,10)
|
|
dma1
|
|
first DMA # for WSS chip (0,1,3)
|
|
dma2
|
|
second DMA # for WSS chip (0,1,3)
|
|
|
|
This module supports only one card, autoprobe and PnP.
|
|
|
|
Module snd-oxygen
|
|
-----------------
|
|
|
|
Module for sound cards based on the C-Media CMI8786/8787/8788 chip:
|
|
|
|
* Asound A-8788
|
|
* Asus Xonar DG/DGX
|
|
* AuzenTech X-Meridian
|
|
* AuzenTech X-Meridian 2G
|
|
* Bgears b-Enspirer
|
|
* Club3D Theatron DTS
|
|
* HT-Omega Claro (plus)
|
|
* HT-Omega Claro halo (XT)
|
|
* Kuroutoshikou CMI8787-HG2PCI
|
|
* Razer Barracuda AC-1
|
|
* Sondigo Inferno
|
|
* TempoTec HiFier Fantasia
|
|
* TempoTec HiFier Serenade
|
|
|
|
This module supports autoprobe and multiple cards.
|
|
|
|
Module snd-pcsp
|
|
---------------
|
|
|
|
Module for internal PC-Speaker.
|
|
|
|
nopcm
|
|
Disable PC-Speaker PCM sound. Only beeps remain.
|
|
nforce_wa
|
|
enable NForce chipset workaround. Expect bad sound.
|
|
|
|
This module supports system beeps, some kind of PCM playback and
|
|
even a few mixer controls.
|
|
|
|
Module snd-pcxhr
|
|
----------------
|
|
|
|
Module for Digigram PCXHR boards
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-portman2x4
|
|
---------------------
|
|
|
|
Module for Midiman Portman 2x4 parallel port MIDI interface
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-powermac (on ppc only)
|
|
---------------------------------
|
|
|
|
Module for PowerMac, iMac and iBook on-board soundchips
|
|
|
|
enable_beep
|
|
enable beep using PCM (enabled as default)
|
|
|
|
Module supports autoprobe a chip.
|
|
|
|
Note: the driver may have problems regarding endianness.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-pxa2xx-ac97 (on arm only)
|
|
------------------------------------
|
|
|
|
Module for AC97 driver for the Intel PXA2xx chip
|
|
|
|
For ARM architecture only.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-riptide
|
|
------------------
|
|
|
|
Module for Conexant Riptide chip
|
|
|
|
joystick_port
|
|
Joystick port # (default: 0x200)
|
|
mpu_port
|
|
MPU401 port # (default: 0x330)
|
|
opl3_port
|
|
OPL3 port # (default: 0x388)
|
|
|
|
This module supports multiple cards.
|
|
The driver requires the firmware loader support on kernel.
|
|
You need to install the firmware file ``riptide.hex`` to the standard
|
|
firmware path (e.g. /lib/firmware).
|
|
|
|
Module snd-rme32
|
|
----------------
|
|
|
|
Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
|
|
Prodif96 and Prodif Gold) sound cards.
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-rme96
|
|
----------------
|
|
|
|
Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-rme9652
|
|
------------------
|
|
|
|
Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
|
|
|
|
precise_ptr
|
|
Enable precise pointer (doesn't work reliably). (default = 0)
|
|
|
|
This module supports multiple cards.
|
|
|
|
Note: snd-page-alloc module does the job which snd-hammerfall-mem
|
|
module did formerly. It will allocate the buffers in advance
|
|
when any RME9652 cards are found. To make the buffer
|
|
allocation sure, load snd-page-alloc module in the early
|
|
stage of boot sequence. See `Early Buffer Allocation`_
|
|
section.
|
|
|
|
Module snd-sa11xx-uda1341 (on arm only)
|
|
---------------------------------------
|
|
|
|
Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
|
|
|
|
Module supports only one card.
|
|
Module has no enable and index options.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-sb8
|
|
--------------
|
|
|
|
Module for 8-bit SoundBlaster cards: SoundBlaster 1.0, SoundBlaster 2.0,
|
|
SoundBlaster Pro
|
|
|
|
port
|
|
port # for SB DSP chip (0x220,0x240,0x260)
|
|
irq
|
|
IRQ # for SB DSP chip (5,7,9,10)
|
|
dma8
|
|
DMA # for SB DSP chip (1,3)
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-sb16 and snd-sbawe
|
|
-----------------------------
|
|
|
|
Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
|
|
SoundBlaster AWE 32 (PnP), SoundBlaster AWE 64 PnP
|
|
|
|
mic_agc
|
|
Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
|
|
csp
|
|
ASP/CSP chip support - 0 = disable (default), 1 = enable
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with isapnp=0, the following options are available:
|
|
|
|
port
|
|
port # for SB DSP 4.x chip (0x220,0x240,0x260)
|
|
mpu_port
|
|
port # for MPU-401 UART (0x300,0x330), -1 = disable
|
|
awe_port
|
|
base port # for EMU8000 synthesizer (0x620,0x640,0x660) (snd-sbawe
|
|
module only)
|
|
irq
|
|
IRQ # for SB DSP 4.x chip (5,7,9,10)
|
|
dma8
|
|
8-bit DMA # for SB DSP 4.x chip (0,1,3)
|
|
dma16
|
|
16-bit DMA # for SB DSP 4.x chip (5,6,7)
|
|
|
|
This module supports multiple cards, autoprobe and ISA PnP.
|
|
|
|
Note: To use Vibra16X cards in 16-bit half duplex mode, you must
|
|
disable 16bit DMA with dma16 = -1 module parameter.
|
|
Also, all Sound Blaster 16 type cards can operate in 16-bit
|
|
half duplex mode through 8-bit DMA channel by disabling their
|
|
16-bit DMA channel.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-sc6000
|
|
-----------------
|
|
|
|
Module for Gallant SC-6000 soundcard and later models: SC-6600 and
|
|
SC-7000.
|
|
|
|
port
|
|
Port # (0x220 or 0x240)
|
|
mss_port
|
|
MSS Port # (0x530 or 0xe80)
|
|
irq
|
|
IRQ # (5,7,9,10,11)
|
|
mpu_irq
|
|
MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq
|
|
dma
|
|
DMA # (1,3,0)
|
|
joystick
|
|
Enable gameport - 0 = disable (default), 1 = enable
|
|
|
|
This module supports multiple cards.
|
|
|
|
This card is also known as Audio Excel DSP 16 or Zoltrix AV302.
|
|
|
|
Module snd-sscape
|
|
-----------------
|
|
|
|
Module for ENSONIQ SoundScape cards.
|
|
|
|
port
|
|
Port # (PnP setup)
|
|
wss_port
|
|
WSS Port # (PnP setup)
|
|
irq
|
|
IRQ # (PnP setup)
|
|
mpu_irq
|
|
MPU-401 IRQ # (PnP setup)
|
|
dma
|
|
DMA # (PnP setup)
|
|
dma2
|
|
2nd DMA # (PnP setup, -1 to disable)
|
|
joystick
|
|
Enable gameport - 0 = disable (default), 1 = enable
|
|
|
|
This module supports multiple cards.
|
|
|
|
The driver requires the firmware loader support on kernel.
|
|
|
|
Module snd-sun-amd7930 (on sparc only)
|
|
--------------------------------------
|
|
|
|
Module for AMD7930 sound chips found on Sparcs.
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-sun-cs4231 (on sparc only)
|
|
-------------------------------------
|
|
|
|
Module for CS4231 sound chips found on Sparcs.
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-sun-dbri (on sparc only)
|
|
-----------------------------------
|
|
|
|
Module for DBRI sound chips found on Sparcs.
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-wavefront
|
|
--------------------
|
|
|
|
Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
|
|
|
|
use_cs4232_midi
|
|
Use CS4232 MPU-401 interface
|
|
(inaccessibly located inside your computer)
|
|
isapnp
|
|
ISA PnP detection - 0 = disable, 1 = enable (default)
|
|
|
|
with isapnp=0, the following options are available:
|
|
|
|
cs4232_pcm_port
|
|
Port # for CS4232 PCM interface.
|
|
cs4232_pcm_irq
|
|
IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
|
|
cs4232_mpu_port
|
|
Port # for CS4232 MPU-401 interface.
|
|
cs4232_mpu_irq
|
|
IRQ # for CS4232 MPU-401 interface (9,11,12,15).
|
|
ics2115_port
|
|
Port # for ICS2115
|
|
ics2115_irq
|
|
IRQ # for ICS2115
|
|
fm_port
|
|
FM OPL-3 Port #
|
|
dma1
|
|
DMA1 # for CS4232 PCM interface.
|
|
dma2
|
|
DMA2 # for CS4232 PCM interface.
|
|
|
|
The below are options for wavefront_synth features:
|
|
|
|
wf_raw
|
|
Assume that we need to boot the OS (default:no);
|
|
If yes, then during driver loading, the state of the board is
|
|
ignored, and we reset the board and load the firmware anyway.
|
|
fx_raw
|
|
Assume that the FX process needs help (default:yes);
|
|
If false, we'll leave the FX processor in whatever state it is
|
|
when the driver is loaded. The default is to download the
|
|
microprogram and associated coefficients to set it up for
|
|
"default" operation, whatever that means.
|
|
debug_default
|
|
Debug parameters for card initialization
|
|
wait_usecs
|
|
How long to wait without sleeping, usecs (default:150);
|
|
This magic number seems to give pretty optimal throughput
|
|
based on my limited experimentation.
|
|
If you want to play around with it and find a better value, be
|
|
my guest. Remember, the idea is to get a number that causes us
|
|
to just busy wait for as many WaveFront commands as possible,
|
|
without coming up with a number so large that we hog the whole
|
|
CPU.
|
|
Specifically, with this number, out of about 134,000 status
|
|
waits, only about 250 result in a sleep.
|
|
sleep_interval
|
|
How long to sleep when waiting for reply (default: 100)
|
|
sleep_tries
|
|
How many times to try sleeping during a wait (default: 50)
|
|
ospath
|
|
Pathname to processed ICS2115 OS firmware (default:wavefront.os);
|
|
The path name of the ISC2115 OS firmware. In the recent
|
|
version, it's handled via firmware loader framework, so it
|
|
must be installed in the proper path, typically,
|
|
/lib/firmware.
|
|
reset_time
|
|
How long to wait for a reset to take effect (default:2)
|
|
ramcheck_time
|
|
How many seconds to wait for the RAM test (default:20)
|
|
osrun_time
|
|
How many seconds to wait for the ICS2115 OS (default:10)
|
|
|
|
This module supports multiple cards and ISA PnP.
|
|
|
|
Note: the firmware file ``wavefront.os`` was located in the earlier
|
|
version in /etc. Now it's loaded via firmware loader, and
|
|
must be in the proper firmware path, such as /lib/firmware.
|
|
Copy (or symlink) the file appropriately if you get an error
|
|
regarding firmware downloading after upgrading the kernel.
|
|
|
|
Module snd-sonicvibes
|
|
---------------------
|
|
|
|
Module for S3 SonicVibes PCI sound cards.
|
|
* PINE Schubert 32 PCI
|
|
|
|
reverb
|
|
Reverb Enable - 1 = enable, 0 = disable (default);
|
|
SoundCard must have onboard SRAM for this.
|
|
mge
|
|
Mic Gain Enable - 1 = enable, 0 = disable (default)
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
Module snd-serial-u16550
|
|
------------------------
|
|
|
|
Module for UART16550A serial MIDI ports.
|
|
|
|
port
|
|
port # for UART16550A chip
|
|
irq
|
|
IRQ # for UART16550A chip, -1 = poll mode
|
|
speed
|
|
speed in bauds (9600,19200,38400,57600,115200)
|
|
38400 = default
|
|
base
|
|
base for divisor in bauds (57600,115200,230400,460800)
|
|
115200 = default
|
|
outs
|
|
number of MIDI ports in a serial port (1-4)
|
|
1 = default
|
|
adaptor
|
|
Type of adaptor.
|
|
0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
|
|
3 = MS-124W M/B, 4 = Generic
|
|
|
|
This module supports multiple cards. This module does not support autoprobe
|
|
thus the main port must be specified!!! Other options are optional.
|
|
|
|
Module snd-trident
|
|
------------------
|
|
|
|
Module for Trident 4DWave DX/NX sound cards.
|
|
* Best Union Miss Melody 4DWave PCI
|
|
* HIS 4DWave PCI
|
|
* Warpspeed ONSpeed 4DWave PCI
|
|
* AzTech PCI 64-Q3D
|
|
* Addonics SV 750
|
|
* CHIC True Sound 4Dwave
|
|
* Shark Predator4D-PCI
|
|
* Jaton SonicWave 4D
|
|
* SiS SI7018 PCI Audio
|
|
* Hoontech SoundTrack Digital 4DWave NX
|
|
|
|
pcm_channels
|
|
max channels (voices) reserved for PCM
|
|
wavetable_size
|
|
max wavetable size in kB (4-?kb)
|
|
|
|
This module supports multiple cards and autoprobe.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-ua101
|
|
----------------
|
|
|
|
Module for the Edirol UA-101/UA-1000 audio/MIDI interfaces.
|
|
|
|
This module supports multiple devices, autoprobe and hotplugging.
|
|
|
|
Module snd-usb-audio
|
|
--------------------
|
|
|
|
Module for USB audio and USB MIDI devices.
|
|
|
|
vid
|
|
Vendor ID for the device (optional)
|
|
pid
|
|
Product ID for the device (optional)
|
|
nrpacks
|
|
Max. number of packets per URB (default: 8)
|
|
device_setup
|
|
Device specific magic number (optional);
|
|
Influence depends on the device
|
|
Default: 0x0000
|
|
ignore_ctl_error
|
|
Ignore any USB-controller regarding mixer interface (default: no)
|
|
autoclock
|
|
Enable auto-clock selection for UAC2 devices (default: yes)
|
|
quirk_alias
|
|
Quirk alias list, pass strings like ``0123abcd:5678beef``, which
|
|
applies the existing quirk for the device 5678:beef to a new
|
|
device 0123:abcd.
|
|
use_vmalloc
|
|
Use vmalloc() for allocations of the PCM buffers (default: yes).
|
|
For architectures with non-coherent memory like ARM or MIPS, the
|
|
mmap access may give inconsistent results with vmalloc'ed
|
|
buffers. If mmap is used on such architectures, turn off this
|
|
option, so that the DMA-coherent buffers are allocated and used
|
|
instead.
|
|
|
|
This module supports multiple devices, autoprobe and hotplugging.
|
|
|
|
NB: ``nrpacks`` parameter can be modified dynamically via sysfs.
|
|
Don't put the value over 20. Changing via sysfs has no sanity
|
|
check.
|
|
|
|
NB: ``ignore_ctl_error=1`` may help when you get an error at accessing
|
|
the mixer element such as URB error -22. This happens on some
|
|
buggy USB device or the controller.
|
|
|
|
NB: quirk_alias option is provided only for testing / development.
|
|
If you want to have a proper support, contact to upstream for
|
|
adding the matching quirk in the driver code statically.
|
|
|
|
Module snd-usb-caiaq
|
|
--------------------
|
|
|
|
Module for caiaq UB audio interfaces,
|
|
|
|
* Native Instruments RigKontrol2
|
|
* Native Instruments Kore Controller
|
|
* Native Instruments Audio Kontrol 1
|
|
* Native Instruments Audio 8 DJ
|
|
|
|
This module supports multiple devices, autoprobe and hotplugging.
|
|
|
|
Module snd-usb-usx2y
|
|
--------------------
|
|
|
|
Module for Tascam USB US-122, US-224 and US-428 devices.
|
|
|
|
This module supports multiple devices, autoprobe and hotplugging.
|
|
|
|
Note: you need to load the firmware via ``usx2yloader`` utility included
|
|
in alsa-tools and alsa-firmware packages.
|
|
|
|
Module snd-via82xx
|
|
------------------
|
|
|
|
Module for AC'97 motherboards based on VIA 82C686A/686B, 8233, 8233A,
|
|
8233C, 8235, 8237 (south) bridge.
|
|
|
|
mpu_port
|
|
0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
|
|
[VIA686A/686B only]
|
|
joystick
|
|
Enable joystick (default off) [VIA686A/686B only]
|
|
ac97_clock
|
|
AC'97 codec clock base (default 48000Hz)
|
|
dxs_support
|
|
support DXS channels, 0 = auto (default), 1 = enable, 2 = disable,
|
|
3 = 48k only, 4 = no VRA, 5 = enable any sample rate and different
|
|
sample rates on different channels [VIA8233/C, 8235, 8237 only]
|
|
ac97_quirk
|
|
AC'97 workaround for strange hardware;
|
|
See `AC97 Quirk Option`_ section below.
|
|
|
|
This module supports one chip and autoprobe.
|
|
|
|
Note: on some SMP motherboards like MSI 694D the interrupts might
|
|
not be generated properly. In such a case, please try to
|
|
set the SMP (or MPS) version on BIOS to 1.1 instead of
|
|
default value 1.4. Then the interrupt number will be
|
|
assigned under 15. You might also upgrade your BIOS.
|
|
|
|
Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
|
|
channels as the first PCM. On these channels, up to 4
|
|
streams can be played at the same time, and the controller
|
|
can perform sample rate conversion with separate rates for
|
|
each channel.
|
|
As default (``dxs_support = 0``), 48k fixed rate is chosen
|
|
except for the known devices since the output is often
|
|
noisy except for 48k on some mother boards due to the
|
|
bug of BIOS.
|
|
Please try once ``dxs_support=5`` and if it works on other
|
|
sample rates (e.g. 44.1kHz of mp3 playback), please let us
|
|
know the PCI subsystem vendor/device id's (output of
|
|
``lspci -nv``).
|
|
If ``dxs_support=5`` does not work, try ``dxs_support=4``; if it
|
|
doesn't work too, try dxs_support=1. (dxs_support=1 is
|
|
usually for old motherboards. The correct implemented
|
|
board should work with 4 or 5.) If it still doesn't
|
|
work and the default setting is ok, ``dxs_support=3`` is the
|
|
right choice. If the default setting doesn't work at all,
|
|
try ``dxs_support=2`` to disable the DXS channels.
|
|
In any cases, please let us know the result and the
|
|
subsystem vendor/device ids. See `Links and Addresses`_
|
|
below.
|
|
|
|
Note: for the MPU401 on VIA823x, use snd-mpu401 driver
|
|
additionally. The mpu_port option is for VIA686 chips only.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-via82xx-modem
|
|
------------------------
|
|
|
|
Module for VIA82xx AC97 modem
|
|
|
|
ac97_clock
|
|
AC'97 codec clock base (default 48000Hz)
|
|
|
|
This module supports one card and autoprobe.
|
|
|
|
Note: The default index value of this module is -2, i.e. the first
|
|
slot is excluded.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-virmidi
|
|
------------------
|
|
|
|
Module for virtual rawmidi devices.
|
|
This module creates virtual rawmidi devices which communicate
|
|
to the corresponding ALSA sequencer ports.
|
|
|
|
midi_devs
|
|
MIDI devices # (1-4, default=4)
|
|
|
|
This module supports multiple cards.
|
|
|
|
Module snd-virtuoso
|
|
-------------------
|
|
|
|
Module for sound cards based on the Asus AV66/AV100/AV200 chips,
|
|
i.e., Xonar D1, DX, D2, D2X, DS, DSX, Essence ST (Deluxe),
|
|
Essence STX (II), HDAV1.3 (Deluxe), and HDAV1.3 Slim.
|
|
|
|
This module supports autoprobe and multiple cards.
|
|
|
|
Module snd-vx222
|
|
----------------
|
|
|
|
Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
|
|
|
|
mic
|
|
Enable Microphone on V222 Mic (NYI)
|
|
ibl
|
|
Capture IBL size. (default = 0, minimum size)
|
|
|
|
This module supports multiple cards.
|
|
|
|
When the driver is compiled as a module and the hotplug firmware
|
|
is supported, the firmware data is loaded via hotplug automatically.
|
|
Install the necessary firmware files in alsa-firmware package.
|
|
When no hotplug fw loader is available, you need to load the
|
|
firmware via vxloader utility in alsa-tools package. To invoke
|
|
vxloader automatically, add the following to /etc/modprobe.d/alsa.conf
|
|
|
|
::
|
|
|
|
install snd-vx222 /sbin/modprobe --first-time -i snd-vx222\
|
|
&& /usr/bin/vxloader
|
|
|
|
(for 2.2/2.4 kernels, add ``post-install /usr/bin/vxloader`` to
|
|
/etc/modules.conf, instead.)
|
|
IBL size defines the interrupts period for PCM. The smaller size
|
|
gives smaller latency but leads to more CPU consumption, too.
|
|
The size is usually aligned to 126. As default (=0), the smallest
|
|
size is chosen. The possible IBL values can be found in
|
|
/proc/asound/cardX/vx-status proc file.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-vxpocket
|
|
-------------------
|
|
|
|
Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
|
|
|
|
ibl
|
|
Capture IBL size. (default = 0, minimum size)
|
|
|
|
This module supports multiple cards. The module is compiled only when
|
|
PCMCIA is supported on kernel.
|
|
|
|
With the older 2.6.x kernel, to activate the driver via the card
|
|
manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
|
|
sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
|
|
longer require a config file.
|
|
|
|
When the driver is compiled as a module and the hotplug firmware
|
|
is supported, the firmware data is loaded via hotplug automatically.
|
|
Install the necessary firmware files in alsa-firmware package.
|
|
When no hotplug fw loader is available, you need to load the
|
|
firmware via vxloader utility in alsa-tools package.
|
|
|
|
About capture IBL, see the description of snd-vx222 module.
|
|
|
|
Note: snd-vxp440 driver is merged to snd-vxpocket driver since
|
|
ALSA 1.0.10.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-ymfpci
|
|
-----------------
|
|
|
|
Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
|
|
|
|
mpu_port
|
|
0x300,0x330,0x332,0x334, 0 (disable) by default,
|
|
1 (auto-detect for YMF744/754 only)
|
|
fm_port
|
|
0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
|
|
1 (auto-detect for YMF744/754 only)
|
|
joystick_port
|
|
0x201,0x202,0x204,0x205, 0 (disable) by default,
|
|
1 (auto-detect)
|
|
rear_switch
|
|
enable shared rear/line-in switch (bool)
|
|
|
|
This module supports autoprobe and multiple chips.
|
|
|
|
The power-management is supported.
|
|
|
|
Module snd-pdaudiocf
|
|
--------------------
|
|
|
|
Module for Sound Core PDAudioCF sound card.
|
|
|
|
The power-management is supported.
|
|
|
|
|
|
AC97 Quirk Option
|
|
=================
|
|
|
|
The ac97_quirk option is used to enable/override the workaround for
|
|
specific devices on drivers for on-board AC'97 controllers like
|
|
snd-intel8x0. Some hardware have swapped output pins between Master
|
|
and Headphone, or Surround (thanks to confusion of AC'97
|
|
specifications from version to version :-)
|
|
|
|
The driver provides the auto-detection of known problematic devices,
|
|
but some might be unknown or wrongly detected. In such a case, pass
|
|
the proper value with this option.
|
|
|
|
The following strings are accepted:
|
|
|
|
default
|
|
Don't override the default setting
|
|
none
|
|
Disable the quirk
|
|
hp_only
|
|
Bind Master and Headphone controls as a single control
|
|
swap_hp
|
|
Swap headphone and master controls
|
|
swap_surround
|
|
Swap master and surround controls
|
|
ad_sharing
|
|
For AD1985, turn on OMS bit and use headphone
|
|
alc_jack
|
|
For ALC65x, turn on the jack sense mode
|
|
inv_eapd
|
|
Inverted EAPD implementation
|
|
mute_led
|
|
Bind EAPD bit for turning on/off mute LED
|
|
|
|
For backward compatibility, the corresponding integer value -1, 0, ...
|
|
are accepted, too.
|
|
|
|
For example, if ``Master`` volume control has no effect on your device
|
|
but only ``Headphone`` does, pass ac97_quirk=hp_only module option.
|
|
|
|
|
|
Configuring Non-ISAPNP Cards
|
|
============================
|
|
|
|
When the kernel is configured with ISA-PnP support, the modules
|
|
supporting the isapnp cards will have module options ``isapnp``.
|
|
If this option is set, *only* the ISA-PnP devices will be probed.
|
|
For probing the non ISA-PnP cards, you have to pass ``isapnp=0`` option
|
|
together with the proper i/o and irq configuration.
|
|
|
|
When the kernel is configured without ISA-PnP support, isapnp option
|
|
will be not built in.
|
|
|
|
|
|
Module Autoloading Support
|
|
==========================
|
|
|
|
The ALSA drivers can be loaded automatically on demand by defining
|
|
module aliases. The string ``snd-card-%1`` is requested for ALSA native
|
|
devices where ``%i`` is sound card number from zero to seven.
|
|
|
|
To auto-load an ALSA driver for OSS services, define the string
|
|
``sound-slot-%i`` where ``%i`` means the slot number for OSS, which
|
|
corresponds to the card index of ALSA. Usually, define this
|
|
as the same card module.
|
|
|
|
An example configuration for a single emu10k1 card is like below:
|
|
::
|
|
|
|
----- /etc/modprobe.d/alsa.conf
|
|
alias snd-card-0 snd-emu10k1
|
|
alias sound-slot-0 snd-emu10k1
|
|
----- /etc/modprobe.d/alsa.conf
|
|
|
|
The available number of auto-loaded sound cards depends on the module
|
|
option ``cards_limit`` of snd module. As default it's set to 1.
|
|
To enable the auto-loading of multiple cards, specify the number of
|
|
sound cards in that option.
|
|
|
|
When multiple cards are available, it'd better to specify the index
|
|
number for each card via module option, too, so that the order of
|
|
cards is kept consistent.
|
|
|
|
An example configuration for two sound cards is like below:
|
|
::
|
|
|
|
----- /etc/modprobe.d/alsa.conf
|
|
# ALSA portion
|
|
options snd cards_limit=2
|
|
alias snd-card-0 snd-interwave
|
|
alias snd-card-1 snd-ens1371
|
|
options snd-interwave index=0
|
|
options snd-ens1371 index=1
|
|
# OSS/Free portion
|
|
alias sound-slot-0 snd-interwave
|
|
alias sound-slot-1 snd-ens1371
|
|
----- /etc/modprobe.d/alsa.conf
|
|
|
|
In this example, the interwave card is always loaded as the first card
|
|
(index 0) and ens1371 as the second (index 1).
|
|
|
|
Alternative (and new) way to fixate the slot assignment is to use
|
|
``slots`` option of snd module. In the case above, specify like the
|
|
following:
|
|
::
|
|
|
|
options snd slots=snd-interwave,snd-ens1371
|
|
|
|
Then, the first slot (#0) is reserved for snd-interwave driver, and
|
|
the second (#1) for snd-ens1371. You can omit index option in each
|
|
driver if slots option is used (although you can still have them at
|
|
the same time as long as they don't conflict).
|
|
|
|
The slots option is especially useful for avoiding the possible
|
|
hot-plugging and the resultant slot conflict. For example, in the
|
|
case above again, the first two slots are already reserved. If any
|
|
other driver (e.g. snd-usb-audio) is loaded before snd-interwave or
|
|
snd-ens1371, it will be assigned to the third or later slot.
|
|
|
|
When a module name is given with '!', the slot will be given for any
|
|
modules but that name. For example, ``slots=!snd-pcsp`` will reserve
|
|
the first slot for any modules but snd-pcsp.
|
|
|
|
|
|
ALSA PCM devices to OSS devices mapping
|
|
=======================================
|
|
::
|
|
|
|
/dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
|
|
/dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
|
|
/dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
|
|
/dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
|
|
/dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
|
|
/dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
|
|
/dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
|
|
/dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
|
|
/dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
|
|
|
|
The first number from ``/dev/snd/pcmC{X}D{Y}[c|p]`` expression means
|
|
sound card number and second means device number. The ALSA devices
|
|
have either ``c`` or ``p`` suffix indicating the direction, capture and
|
|
playback, respectively.
|
|
|
|
Please note that the device mapping above may be varied via the module
|
|
options of snd-pcm-oss module.
|
|
|
|
|
|
Proc interfaces (/proc/asound)
|
|
==============================
|
|
|
|
/proc/asound/card#/pcm#[cp]/oss
|
|
-------------------------------
|
|
erase
|
|
erase all additional information about OSS applications
|
|
|
|
<app_name> <fragments> <fragment_size> [<options>]
|
|
<app_name>
|
|
name of application with (higher priority) or without path
|
|
<fragments>
|
|
number of fragments or zero if auto
|
|
<fragment_size>
|
|
size of fragment in bytes or zero if auto
|
|
<options>
|
|
optional parameters
|
|
|
|
disable
|
|
the application tries to open a pcm device for
|
|
this channel but does not want to use it.
|
|
(Cause a bug or mmap needs)
|
|
It's good for Quake etc...
|
|
direct
|
|
don't use plugins
|
|
block
|
|
force block mode (rvplayer)
|
|
non-block
|
|
force non-block mode
|
|
whole-frag
|
|
write only whole fragments (optimization affecting
|
|
playback only)
|
|
no-silence
|
|
do not fill silence ahead to avoid clicks
|
|
buggy-ptr
|
|
Returns the whitespace blocks in GETOPTR ioctl
|
|
instead of filled blocks
|
|
|
|
Example:
|
|
::
|
|
|
|
echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
|
|
echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
|
|
echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
|
|
|
|
|
|
Early Buffer Allocation
|
|
=======================
|
|
|
|
Some drivers (e.g. hdsp) require the large contiguous buffers, and
|
|
sometimes it's too late to find such spaces when the driver module is
|
|
actually loaded due to memory fragmentation. You can pre-allocate the
|
|
PCM buffers by loading snd-page-alloc module and write commands to its
|
|
proc file in prior, for example, in the early boot stage like
|
|
``/etc/init.d/*.local`` scripts.
|
|
|
|
Reading the proc file /proc/drivers/snd-page-alloc shows the current
|
|
usage of page allocation. In writing, you can send the following
|
|
commands to the snd-page-alloc driver:
|
|
|
|
* add VENDOR DEVICE MASK SIZE BUFFERS
|
|
|
|
VENDOR and DEVICE are PCI vendor and device IDs. They take
|
|
integer numbers (0x prefix is needed for the hex).
|
|
MASK is the PCI DMA mask. Pass 0 if not restricted.
|
|
SIZE is the size of each buffer to allocate. You can pass
|
|
k and m suffix for KB and MB. The max number is 16MB.
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|
BUFFERS is the number of buffers to allocate. It must be greater
|
|
than 0. The max number is 4.
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|
|
* erase
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|
|
This will erase the all pre-allocated buffers which are not in
|
|
use.
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|
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Links and Addresses
|
|
===================
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|
|
|
ALSA project homepage
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|
http://www.alsa-project.org
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|
Kernel Bugzilla
|
|
http://bugzilla.kernel.org/
|
|
ALSA Developers ML
|
|
mailto:alsa-devel@alsa-project.org
|
|
alsa-info.sh script
|
|
http://www.alsa-project.org/alsa-info.sh
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